/* roulang page: index */
:root {
    --primary: #116a5c;
    --primary-deep: #0b4a40;
    --primary-soft: #e1f0eb;
    --accent: #b98a4f;
    --accent-soft: #f4e9d8;
    --bg: #f7f5ef;
    --surface: #ffffff;
    --ink: #21302d;
    --muted: #5f6d68;
    --border: rgba(24, 44, 39, 0.09);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(30, 50, 45, 0.05);
    --shadow-hover: 0 2px 4px rgba(0, 0, 0, 0.04), 0 20px 44px rgba(30, 50, 45, 0.10);
    --radius-lg: 28px;
    --radius-md: 18px;
    --radius-pill: 999px;
    --container-max: 1180px;
    --section-space: clamp(70px, 9vw, 116px);
    --ease: cubic-bezier(0.2, 0, 0, 1);
    --font-sans: "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after {
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.78;
    color: var(--ink);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
body, h1, h2, h3, p, ul, ol, dl, dd, figure, blockquote {
    margin: 0;
    padding: 0;
}
ul, ol {
    list-style: none;
}
a {
    color: inherit;
    text-decoration-thickness: 1px;
    text-decoration-color: rgba(17, 106, 92, 0.34);
    transition: color 0.2s var(--ease);
}
a:hover {
    color: var(--primary);
}
img {
    max-width: 100%;
    display: block;
}
button, input, select, textarea {
    font: inherit;
}
:focus-visible {
    outline: 3px solid rgba(17, 106, 92, 0.34);
    outline-offset: 3px;
    border-radius: 6px;
}
.container {
    max-width: var(--container-max);
}
section {
    position: relative;
}
.text-muted-soft {
    color: var(--muted);
}
.section-space {
    padding: var(--section-space) 0;
}
.section-head {
    margin-bottom: 42px;
}
.section-head .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary-soft);
    color: var(--primary-deep);
    font-size: 13px;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: var(--radius-pill);
    letter-spacing: 0.02em;
}
.section-head .eyebrow::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
}
.section-head h2 {
    font-size: clamp(26px, 3vw, 38px);
    line-height: 1.38;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-top: 16px;
}
.section-head p {
    color: var(--muted);
    font-size: 16px;
    max-width: 640px;
    margin-top: 10px;
}
.btn {
    border-radius: var(--radius-pill);
    font-weight: 600;
    transition: all 0.2s var(--ease);
    padding: 10px 24px;
}
.btn-lg {
    padding: 13px 28px;
    font-size: 15px;
}
.btn-primary {
    background-color: var(--primary);
    border-color: var(--primary);
    color: #fff;
    box-shadow: 0 8px 20px rgba(17, 106, 92, 0.16);
}
.btn-primary:hover, .btn-primary:active {
    background-color: var(--primary-deep);
    border-color: var(--primary-deep);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 12px 28px rgba(17, 106, 92, 0.2);
}
.btn-outline-light {
    border-color: rgba(255, 255, 255, 0.68);
    color: #fff;
    background: rgba(255, 255, 255, 0.06);
}
.btn-outline-light:hover {
    background: #fff;
    color: var(--primary-deep);
    border-color: #fff;
    transform: translateY(-1px);
}
.btn-outline-primary {
    border-color: rgba(17, 106, 92, 0.38);
    color: var(--primary);
    background: transparent;
}
.btn-outline-primary:hover {
    background: var(--primary-soft);
    border-color: var(--primary);
    color: var(--primary-deep);
}
button:focus, a:focus {
    box-shadow: none;
}
.btn:focus-visible {
    outline: 3px solid rgba(255, 255, 255, 0.86);
    outline-offset: 3px;
}

/* =============== 顶部悬浮导航 =============== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1080;
    padding: 14px 18px 0;
    pointer-events: none;
}
.site-header > * {
    pointer-events: auto;
}
.glass-navbar {
    max-width: 1120px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.80);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    border: 1px solid rgba(255, 255, 255, 0.55);
    border-radius: 60px;
    padding: 9px 20px 9px 24px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05), 0 12px 32px rgba(36, 60, 53, 0.08);
}
.navbar-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    color: var(--ink);
    letter-spacing: -0.01em;
    font-size: 17px;
    padding: 0;
    margin-right: 18px;
}
.navbar-brand .brand-mark {
    width: 34px;
    height: 34px;
    background: var(--primary);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    box-shadow: 0 6px 16px rgba(17, 106, 92, 0.25);
    flex: 0 0 34px;
}
.navbar-brand .brand-mark svg {
    width: 19px;
    height: 19px;
}
.navbar-brand:hover {
    color: var(--primary);
}
.glass-navbar .nav-link {
    display: inline-flex;
    align-items: center;
    position: relative;
    color: var(--muted);
    font-size: 14px;
    font-weight: 600;
    border-radius: 40px;
    padding: 7px 16px;
    transition: background 0.2s var(--ease), color 0.2s var(--ease), opacity 0.2s;
}
.glass-navbar .nav-link::after {
    content: "";
    position: absolute;
    left: 16px;
    right: 16px;
    bottom: 3px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    opacity: 0;
    transform: scaleX(0.4);
    transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
}
.glass-navbar .nav-link:hover {
    color: var(--primary-deep);
    background: rgba(17, 106, 92, 0.06);
}
.glass-navbar .nav-link.active {
    color: var(--primary-deep);
    background: var(--primary-soft);
}
.glass-navbar .nav-link.active::after {
    opacity: 1;
    transform: scaleX(0.72);
}
.glass-navbar .navbar-download-btn {
    font-size: 14px;
    padding: 8px 20px;
}
.navbar-toggler {
    border: none;
    padding: 4px 2px;
    width: 48px;
    height: 36px;
}
.navbar-toggler:focus {
    box-shadow: none;
    outline: 0;
}
.burger-lines {
    width: 26px;
    display: inline-flex;
    flex-direction: column;
    gap: 6px;
    align-items: center;
}
.burger-lines span {
    display: block;
    width: 22px;
    height: 2px;
    border-radius: 4px;
    background: var(--primary-deep);
    transition: width 0.2s var(--ease);
}
.burger-lines span:nth-child(2) {
    width: 26px;
}
@media (max-width: 991.98px) {
    .site-header {
        padding: 10px 12px 0;
    }
    .glass-navbar {
        border-radius: 26px;
        padding: 10px 16px;
    }
    .navbar-collapse {
        margin-top: 12px;
        background: rgba(255, 255, 255, 0.94);
        border-radius: 20px;
        padding: 12px;
        box-shadow: 0 14px 34px rgba(20, 42, 36, 0.16);
    }
    .glass-navbar .navbar-nav {
        gap: 2px;
    }
    .glass-navbar .nav-link {
        width: 100%;
    }
    .navbar-collapse.show {
        height: auto;
    }
}

/* =============== Hero =============== */
.hero-section {
    background-color: #12342f;
    background-image:
        linear-gradient(105deg, rgba(7, 42, 38, 0.94) 0%, rgba(20, 72, 63, 0.86) 50%, rgba(36, 104, 86, 0.58) 100%),
        url('/assets/images/backpic/back-1.png');
    background-size: cover, cover;
    background-position: center center;
    color: #f6fbf9;
    padding: clamp(128px, 14vw, 188px) 0 calc(var(--section-space) * 0.62);
    overflow: hidden;
}
.hero-inner {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: clamp(36px, 5vw, 68px);
}
.hero-pretitle {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.10);
    border: 1px solid rgba(255, 255, 255, 0.22);
    color: #dceae5;
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 24px;
}
.hero-pretitle::before {
    content: "";
    width: 8px;
    height: 8px;
    background: #8fd6b6;
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(143, 214, 182, 0.18);
}
.hero-title {
    font-size: clamp(34px, 4vw, 56px);
    line-height: 1.22;
    letter-spacing: -0.025em;
    color: #fff;
    max-width: 640px;
    margin-bottom: 20px;
    text-wrap: balance;
}
.hero-lead {
    color: rgba(231, 242, 238, 0.88);
    font-size: clamp(15px, 1.4vw, 18px);
    line-height: 1.85;
    max-width: 550px;
    margin-bottom: 30px;
}
.hero-ctas {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 28px;
}
.hero-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 0;
}
.hero-chip {
    display: inline-flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.16);
    color: #d9ece5;
    padding: 5px 12px;
    font-size: 13px;
    border-radius: var(--radius-pill);
}
.hero-visual {
    position: relative;
}
.window-frame {
    background: rgba(255, 255, 255, 0.96);
    border-radius: 20px;
    padding: 14px 14px 14px;
    box-shadow: 0 24px 60px rgba(0, 22, 18, 0.28);
    transform: rotate(0.6deg);
}
.window-frame::before {
    content: "";
    display: block;
    height: 22px;
    background:
        radial-gradient(circle 4px at 10px 11px, #ffba93 0 100%, transparent 100%),
        radial-gradient(circle 4px at 28px 11px, #ffd972 0 100%, transparent 100%),
        radial-gradient(circle 4px at 46px 11px, #7dde9e 0 100%, transparent 100%);
    margin-bottom: 12px;
}
.window-frame img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    aspect-ratio: 16 / 10;
    object-fit: cover;
}
.float-note {
    position: absolute;
    left: -32px;
    bottom: -20px;
    background: #fff;
    color: var(--ink);
    border-radius: 16px;
    box-shadow: 0 14px 34px rgba(7, 38, 32, 0.22);
    padding: 12px 18px;
    font-size: 13px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}
.float-note .note-star {
    color: var(--accent);
    letter-spacing: 1px;
}
.scroll-hint {
    position: absolute;
    left: 50%;
    bottom: -78px;
    transform: translateX(-50%);
    width: 24px;
    height: 38px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 40px;
    display: flex;
    justify-content: center;
    padding-top: 7px;
}
.scroll-hint i {
    width: 4px;
    height: 8px;
    background: rgba(255, 255, 255, 0.75);
    border-radius: 4px;
    display: block;
    animation: scrollFade 1.8s infinite;
}
@keyframes scrollFade {
    0% { opacity: 1; transform: translateY(0); }
    60% { opacity: 0; transform: translateY(8px); }
    100% { opacity: 0; transform: translateY(8px); }
}
@media (max-width: 991.98px) {
    .hero-inner {
        grid-template-columns: 1fr;
    }
    .hero-visual {
        max-width: 560px;
    }
    .scroll-hint {
        display: none;
    }
    .float-note {
        left: 8px;
        bottom: -14px;
    }
}

/* =============== 数据条 =============== */
.metrics-section {
    margin-top: -52px;
    position: relative;
    z-index: 5;
    padding-bottom: 20px;
}
.metrics-card {
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.72);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    padding: 30px 20px;
}
.metric-cell {
    text-align: center;
    border-right: 1px solid var(--border);
    padding: 8px 14px;
}
.metric-cell:last-child {
    border-right: 0;
}
.metric-value {
    display: block;
    font-size: clamp(28px, 3vw, 42px);
    font-weight: 300;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--primary);
}
.metric-label {
    font-size: 14px;
    color: var(--muted);
    line-height: 1.5;
    margin-top: 4px;
}
@media (max-width: 767.98px) {
    .metrics-card {
        grid-template-columns: repeat(2, 1fr);
        gap: 18px 0;
        padding: 22px 6px;
    }
    .metric-cell:nth-child(2) {
        border-right: 0;
    }
    .metric-cell:nth-child(-n + 2) {
        border-bottom: 1px solid var(--border);
    }
}

/* =============== 功能引导 / 轮播 =============== */
.feature-tour {
    background: var(--bg);
    overflow: hidden;
}
.feature-carousel .carousel-inner {
    border-radius: 0;
}
.feature-snap {
    position: relative;
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 12px;
    border-radius: 22px;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.3s var(--ease);
}
.feature-snap img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: 14px;
}
.feature-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary-soft);
    color: var(--primary-deep);
    font-size: 13px;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 30px;
    margin-bottom: 18px;
}
.feature-badge::before {
    content: "";
    width: 7px;
    height: 7px;
    background: var(--accent);
    border-radius: 50%;
}
.feature-content h3 {
    font-size: clamp(21px, 2vw, 28px);
    line-height: 1.4;
    margin-bottom: 14px;
    font-weight: 700;
    letter-spacing: -0.01em;
}
.feature-content p {
    color: var(--muted);
    line-height: 1.85;
    margin-bottom: 18px;
}
.feature-check-list li {
    display: flex;
    gap: 10px;
    color: var(--ink);
    font-size: 15px;
    margin-bottom: 10px;
}
.feature-check-list li::before {
    content: "";
    width: 18px;
    height: 18px;
    flex: 0 0 18px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Ccircle cx='16' cy='16' r='16' fill='%23e1f0eb'/%3E%3Cpath d='M10 16 l5 5 l7-9' stroke='%23116a5c' stroke-width='3' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-size: contain;
    margin-top: 5px;
}
.carousel-indicators-lite {
    margin-top: 28px;
    display: flex;
    justify-content: center;
    gap: 8px;
}
.carousel-indicators-lite button {
    width: 28px;
    height: 4px;
    border: none;
    border-radius: 4px;
    background: rgba(17, 106, 92, 0.2);
    transition: all 0.2s;
    padding: 0;
}
.carousel-indicators-lite button.active {
    width: 46px;
    background: var(--primary);
}
.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 6;
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.86);
    box-shadow: var(--shadow-sm);
    transition: all 0.2s;
}
.carousel-arrow:hover {
    background: var(--primary-soft);
    border-color: rgba(17, 106, 92, 0.3);
}
.carousel-arrow.prev {
    left: -18px;
}
.carousel-arrow.next {
    right: -18px;
}
@media (max-width: 767.98px) {
    .carousel-arrow {
        display: none;
    }
}

/* =============== 系统要求 =============== */
.requirements-section {
    background: var(--surface);
}
.req-intro-side h2 {
    font-size: clamp(26px, 2.8vw, 38px);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.45;
    margin: 16px 0 16px;
}
.req-intro-side p {
    color: var(--muted);
}
.req-panel {
    background: #fbfaf7;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 12px 26px 16px;
}
.req-item {
    display: grid;
    grid-template-columns: 130px 1fr;
    gap: 16px;
    padding: 18px 0;
    border-bottom: 1px solid rgba(24, 44, 39, 0.09);
}
.req-item:last-child {
    border-bottom: 0;
}
.req-label {
    font-weight: 600;
    color: var(--ink);
    font-size: 15px;
}
.req-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 4px;
}
.req-tag {
    display: inline-flex;
    background: #fff;
    border: 1px solid rgba(17, 106, 92, 0.2);
    color: var(--primary-deep);
    border-radius: 8px;
    padding: 2px 10px;
    font-size: 13px;
    font-weight: 600;
    line-height: 1.6;
}
.req-desc {
    color: var(--muted);
    font-size: 13px;
    line-height: 1.7;
    margin-top: 8px;
}
@media (max-width: 767.98px) {
    .req-panel {
        padding: 6px 16px;
    }
    .req-item {
        grid-template-columns: 1fr;
        gap: 6px;
    }
}

/* =============== 用户评价 =============== */
.testimonials-section {
    background: var(--bg);
}
.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
}
.testimonial-card {
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    padding: 28px;
    box-shadow: var(--shadow-sm);
    transition: all 0.22s var(--ease);
}
.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}
.testimonial-card .quote-mark {
    color: var(--accent);
    font-size: 28px;
    line-height: 0.9;
    display: block;
    margin-bottom: 12px;
}
.testimonial-card > p {
    color: #40514b;
    font-size: 15px;
    line-height: 1.85;
    margin-bottom: 20px;
}
.testimonial-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    border-top: 1px solid var(--border);
    padding-top: 15px;
}
.testimonial-meta .name {
    font-weight: 600;
    font-size: 14px;
}
.testimonial-meta .platform {
    color: var(--muted);
    font-size: 13px;
}
.stars {
    color: #d9a943;
    font-size: 14px;
    letter-spacing: 2px;
}
@media (max-width: 767.98px) {
    .testimonial-grid {
        grid-template-columns: 1fr;
    }
}

/* =============== FAQ =============== */
.faq-section {
    background: var(--surface);
}
.faq-list {
    max-width: 820px;
    margin: 0 auto;
}
.faq-item {
    border-bottom: 1px solid rgba(24, 44, 39, 0.1);
    position: relative;
    background: transparent;
}
.faq-item:first-child {
    border-top: 1px solid rgba(24, 44, 39, 0.1);
}
.faq-item summary {
    list-style: none;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
    padding: 20px 8px;
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    transition: color 0.2s;
}
.faq-item summary::-webkit-details-marker {
    display: none;
}
.faq-item summary:hover {
    color: var(--primary);
}
.faq-icon {
    width: 28px;
    height: 28px;
    flex: 0 0 28px;
    border: 1px solid rgba(17, 106, 92, 0.4);
    border-radius: 50%;
    position: relative;
    transition: all 0.25s;
}
.faq-icon::before, .faq-icon::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 12px;
    height: 1.6px;
    background: var(--primary);
    transform: translate(-50%, -50%);
    transition: transform 0.25s var(--ease);
}
.faq-icon::after {
    transform: translate(-50%, -50%) rotate(90deg);
}
.faq-item[open] .faq-icon {
    background: var(--primary);
}
.faq-item[open] .faq-icon::before {
    background: #fff;
}
.faq-item[open] .faq-icon::after {
    background: #fff;
    transform: translate(-50%, -50%) rotate(0);
}
.faq-answer {
    padding: 2px 36px 24px 8px;
    color: var(--muted);
    max-width: 760px;
    font-size: 15px;
    line-height: 1.9;
}

/* =============== CMS 最新信息 =============== */
.latest-section {
    background: var(--bg);
}
.latest-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}
.news-card {
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 20px;
    padding: 24px 24px 20px;
    box-shadow: var(--shadow-sm);
    transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease);
    height: 100%;
    display: flex;
    flex-direction: column;
}
.news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}
.news-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}
.news-cat {
    display: inline-block;
    background: var(--primary-soft);
    color: var(--primary-deep);
    font-size: 13px;
    padding: 4px 13px;
    border-radius: 30px;
}
.news-date {
    color: var(--muted);
    font-size: 13px;
}
.news-card h3 {
    font-size: 17px;
    font-weight: 700;
    line-height: 1.6;
    margin-bottom: 10px;
}
.news-card h3 a {
    text-decoration: none;
    transition: color 0.2s;
}
.news-card h3 a:hover {
    color: var(--primary);
}
.news-summary {
    color: var(--muted);
    font-size: 14px;
    line-height: 1.85;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 16px;
}
.news-more {
    margin-top: auto;
    color: var(--primary);
    font-weight: 600;
    font-size: 14px;
}
.news-more::after {
    content: "→";
    display: inline-block;
    transition: transform 0.2s;
    margin-left: 5px;
    color: var(--primary);
}
.news-card:hover .news-more::after {
    transform: translateX(4px);
}
.all-articles-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    font-weight: 600;
    color: var(--primary);
    margin-top: 26px;
}
.all-articles-link svg {
    transition: transform 0.2s;
}
.all-articles-link:hover svg {
    transform: translateX(4px);
}
.empty-state {
    grid-column: 1 / -1;
    border: 2px dashed rgba(17, 106, 92, 0.24);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    color: var(--muted);
    background: rgba(255, 255, 255, 0.55);
}
.empty-state span {
    display: block;
    font-size: 16px;
}
@media (max-width: 767.98px) {
    .latest-grid {
        grid-template-columns: 1fr;
    }
}

/* =============== 最终 CTA 区 =============== */
.final-cta {
    background: #173a34;
    background-image:
        linear-gradient(115deg, rgba(11, 54, 48, 0.95) 0%, rgba(25, 81, 69, 0.82) 68%, rgba(56, 106, 84, 0.52) 100%),
        url('/assets/images/backpic/back-2.png');
    background-size: cover, cover;
    background-position: center;
    color: #f1f8f5;
    padding: 90px 0;
}
.final-cta .cta-box {
    max-width: 760px;
    margin: 0 auto;
    text-align: center;
}
.final-cta .eyebrow {
    color: #b7e4d2;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: inline-flex;
    padding: 6px 16px;
    border-radius: 46px;
    font-size: 13px;
    margin-bottom: 20px;
}
.final-cta h2 {
    font-size: clamp(28px, 4vw, 43px);
    font-weight: 700;
    line-height: 1.38;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}
.final-cta p {
    color: rgba(238, 248, 244, 0.86);
    font-size: 16px;
    margin-bottom: 28px;
}
.final-cta .cta-actions {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
}
.cta-small-note {
    margin-top: 18px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.55);
}

/* =============== 页脚 =============== */
.site-footer {
    background: #102a25;
    color: #d4e2dd;
    padding: 62px 0 28px;
}
.footer-top {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 42px;
    padding-bottom: 46px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
.footer-brand {
    font-size: 19px;
    color: #fff;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}
.footer-brand .footer-logo {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: var(--primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.footer-brand .footer-logo svg {
    width: 18px;
    fill: #fff;
}
.footer-about {
    color: rgba(221, 241, 235, 0.68);
    font-size: 14px;
    line-height: 1.9;
    max-width: 380px;
}
.footer-title {
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 16px;
    padding-bottom: 8px;
    position: relative;
}
.footer-title::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 24px;
    height: 2px;
    background: var(--accent);
}
.footer-links li {
    margin-bottom: 8px;
}
.footer-links a {
    color: rgba(221, 241, 235, 0.7);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s;
}
.footer-links a:hover {
    color: #fff;
    padding-left: 3px;
}
.footer-legal {
    padding: 22px 0 0;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    color: rgba(221, 241, 235, 0.55);
    font-size: 13px;
}
@media (max-width: 991.98px) {
    .footer-top {
        grid-template-columns: 1fr;
        gap: 28px;
    }
}
@media (max-width: 767.98px) {
    .site-footer {
        padding-top: 44px;
    }
}

/* =============== 通用响应式调整 =============== */
@media (max-width: 575.98px) {
    .section-space {
        padding: 64px 0;
    }
    .section-head {
        margin-bottom: 26px;
    }
    .float-note {
        display: none;
    }
    .hero-ctas .btn {
        flex: 1 1 100%;
        min-height: 46px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .footer-legal {
        flex-direction: column;
        text-align: center;
        justify-content: center;
    }
}

/* roulang page: article */
:root{
  --brand:#167a5f;
  --brand-strong:#0f5c49;
  --brand-soft:#e7f5f0;
  --accent:#b5791f;
  --bg:#f7f7f4;
  --surface:#ffffff;
  --surface-2:#f3f6f4;
  --ink:#1f2b28;
  --ink-2:#53605c;
  --ink-3:#8b9692;
  --line:rgba(25,60,50,.1);
  --line-2:rgba(25,60,50,.17);
  --radius:18px;
  --radius-lg:28px;
  --radius-pill:999px;
  --shadow-sm:0 1px 2px rgba(0,0,0,.03),0 10px 30px rgba(0,0,0,.04);
  --shadow-md:0 2px 4px rgba(0,0,0,.04),0 16px 44px rgba(0,0,0,.07);
  --space:clamp(4rem,8vw,6.5rem);
  --container:1240px;
  --font:"Inter","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  background:var(--bg);
  color:var(--ink);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;transition:color .2s cubic-bezier(.2,0,0,1),border-color .2s cubic-bezier(.2,0,0,1),background-color .2s cubic-bezier(.2,0,0,1),box-shadow .2s cubic-bezier(.2,0,0,1)}
a:hover{color:var(--brand)}
img{max-width:100%;display:block}
a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.form-control:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:3px;
  box-shadow:none;
}
.container{
  max-width:var(--container);
  width:100%;
  padding-left:clamp(1rem,3vw,2rem);
  padding-right:clamp(1rem,3vw,2rem);
}
.section{padding-block:var(--space)}

/* Buttons */
.btn{
  border-radius:var(--radius-pill);
  padding:.68rem 1.4rem;
  font-weight:600;
  font-size:1rem;
  letter-spacing:.01em;
  border:1px solid transparent;
  transition:background-color .2s cubic-bezier(.2,0,0,1),border-color .2s cubic-bezier(.2,0,0,1),color .2s cubic-bezier(.2,0,0,1),box-shadow .2s cubic-bezier(.2,0,0,1),transform .2s cubic-bezier(.2,0,0,1);
}
.btn:hover{transform:translateY(-1px)}
.btn-primary{
  --bs-btn-bg:var(--brand);
  --bs-btn-border-color:var(--brand);
  --bs-btn-hover-bg:var(--brand-strong);
  --bs-btn-hover-border-color:var(--brand-strong);
  --bs-btn-active-bg:var(--brand-strong);
  --bs-btn-active-border-color:var(--brand-strong);
  --bs-btn-focus-shadow-rgb:23,122,95;
  background:var(--brand);
  color:#fff;
  box-shadow:0 10px 24px rgba(22,122,95,.18);
}
.btn-outline-primary{
  --bs-btn-color:var(--brand);
  --bs-btn-border-color:rgba(22,122,95,.4);
  --bs-btn-hover-bg:var(--brand-soft);
  --bs-btn-hover-border-color:var(--brand);
  --bs-btn-hover-color:var(--brand-strong);
  --bs-btn-active-bg:var(--brand-soft);
  --bs-btn-active-border-color:var(--brand);
  background:transparent;
  color:var(--brand);
}
.btn-outline-light{
  border-color:rgba(255,255,255,.5);
  color:#fff;
}
.btn-outline-light:hover{
  background:#fff;
  color:var(--ink);
  border-color:#fff;
}

/* Header nav */
.site-header{
  position:sticky;
  top:.6rem;
  z-index:1030;
  padding-inline:1rem;
  margin-top:.35rem;
  pointer-events:none;
}
.glass-navbar{
  max-width:calc(var(--container) + 2.4rem);
  margin-inline:auto;
  border-radius:var(--radius-pill);
  background:rgba(255,255,255,.84);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  border:1px solid rgba(25,60,50,.09);
  box-shadow:0 4px 20px rgba(0,0,0,.05);
  padding:.5rem .7rem;
  pointer-events:auto;
  transition:box-shadow .25s ease,background-color .25s ease;
}
.glass-navbar:hover{
  background:rgba(255,255,255,.94);
  box-shadow:0 6px 28px rgba(0,0,0,.07);
}
.navbar-brand{
  display:inline-flex;
  align-items:center;
  gap:.6rem;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--ink);
  font-size:1.13rem;
  white-space:nowrap;
}
.navbar-brand:hover{color:var(--ink)}
.brand-mark{
  width:2.1rem;
  height:2.1rem;
  background:var(--brand);
  border-radius:14px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  box-shadow:0 6px 14px rgba(22,122,95,.2);
}
.brand-mark svg{width:1.15rem;height:1.15rem}
.navbar-toggler{
  border:0;
  width:44px;
  height:44px;
  border-radius:14px;
  box-shadow:none;
  background:transparent;
}
.navbar-toggler:hover,
.navbar-toggler:focus{
  background:var(--brand-soft);
  outline:none;
}
.burger-lines{
  width:22px;
  height:16px;
  display:inline-flex;
  flex-direction:column;
  justify-content:space-between;
}
.burger-lines span{
  height:2px;
  border-radius:2px;
  background:var(--ink);
  display:block;
  transition:transform .25s ease,opacity .2s ease;
}
.glass-navbar .nav-link{
  font-weight:600;
  color:var(--ink-2);
  padding:.55rem .98rem;
  border-radius:var(--radius-pill);
  font-size:.97rem;
  position:relative;
}
.glass-navbar .nav-link:hover{
  color:var(--brand);
  background:var(--brand-soft);
}
.navbar-download-btn{
  padding:.5rem 1.15rem !important;
  font-size:.95rem;
  border-radius:var(--radius-pill) !important;
  box-shadow:none !important;
}
@media (max-width:991.98px){
  .site-header{padding-inline:.8rem}
  .navbar-collapse{
    position:absolute;
    left:0;
    right:0;
    top:calc(100% + .6rem);
    background:#fff;
    border-radius:24px;
    padding:1rem;
    box-shadow:var(--shadow-md);
    border:1px solid var(--line);
  }
  .navbar-collapse.show{padding-bottom:.7rem}
  .nav-item{width:100%}
  .nav-link{
    display:block;
    width:100%;
    padding:.7rem .9rem !important;
    border-radius:14px;
  }
  .navbar-download-btn{margin:.6rem 0 0 !important}
}

/* Article hero */
.article-hero{
  position:relative;
  overflow:hidden;
  isolation:isolate;
  padding:clamp(3rem,6vw,5.2rem) 0 clamp(3rem,5vw,4.4rem);
  background:var(--brand-soft);
  border-bottom:1px solid var(--line);
}
.article-hero::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:-2;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  opacity:.14;
}
.article-hero::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  background:linear-gradient(to right,rgba(244,251,248,.96),rgba(244,251,248,.72));
}
.article-hero .col-lg-8:has(.article-title){position:relative;z-index:2}
.entry-kicker{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  font-weight:700;
  color:var(--brand);
  letter-spacing:.08em;
  font-size:.9rem;
  margin-bottom:1.1rem;
  text-transform:uppercase;
}
.kicker-dot{
  width:7px;
  height:7px;
  background:var(--accent);
  border-radius:50%;
  display:inline-block;
}
.article-title{
  font-size:clamp(2.05rem,5vw,3.4rem);
  font-weight:800;
  line-height:1.2;
  letter-spacing:-.02em;
  color:var(--ink);
  margin-bottom:1.2rem;
  max-width:820px;
  text-wrap:balance;
}
.article-meta-row{
  display:flex;
  flex-wrap:wrap;
  gap:.9rem 1.2rem;
  align-items:center;
  font-size:.95rem;
  color:var(--ink-2);
}
.article-meta-row .badge-cat{
  background:rgba(22,122,95,.14);
  color:var(--brand-strong);
  border-radius:var(--radius-pill);
  font-weight:700;
  padding:.24rem .8rem;
  letter-spacing:.02em;
}
.article-meta-row .meta-item{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
}
.article-hero-art{
  border-radius:26px;
  padding:10px;
  background:#fff;
  box-shadow:var(--shadow-md);
  border:1px solid rgba(25,60,50,.08);
}
.article-hero-art img{
  aspect-ratio:5/4;
  object-fit:cover;
  width:100%;
  border-radius:18px;
}

/* Main article shell */
.article-main{padding-top:var(--space)}
.article-shell{
  max-width:1060px;
  margin-inline:auto;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  padding:clamp(1.4rem,4vw,3.6rem);
}
.article-crumbs{
  display:flex;
  align-items:center;
  gap:.55rem;
  font-size:.9rem;
  color:var(--ink-3);
  padding-bottom:1.1rem;
  margin-bottom:1.8rem;
  border-bottom:1px solid var(--line);
}
.article-crumbs a{color:var(--ink-2);font-weight:600}
.article-crumbs a:hover{color:var(--brand)}
.article-crumbs span{color:var(--ink-3)}
.article-reader{max-width:760px;margin-inline:auto}
.article-body-content{
  color:var(--ink);
  font-size:1.05rem;
  line-height:1.95;
  letter-spacing:.01em;
}
.article-body-content > * + *{margin-top:1.3rem}
.article-body-content h2{
  font-size:clamp(1.45rem,3vw,1.9rem);
  font-weight:800;
  line-height:1.35;
  margin-top:2.6rem;
  padding-bottom:.55rem;
  border-bottom:1px solid var(--line);
  letter-spacing:-.01em;
}
.article-body-content h3{
  font-size:1.32rem;
  font-weight:750;
  margin-top:2rem;
  line-height:1.45;
}
.article-body-content p{
  margin-bottom:1.25rem;
  color:var(--ink);
}
.article-body-content strong{color:var(--ink);font-weight:700}
.article-body-content img{
  border-radius:var(--radius);
  width:auto;
  max-width:100%;
  margin:2rem auto;
  box-shadow:var(--shadow-sm);
}
.article-body-content a{
  color:var(--brand);
  text-decoration:underline;
  text-decoration-color:rgba(22,122,95,.35);
  text-underline-offset:4px;
  font-weight:600;
}
.article-body-content a:hover{
  color:var(--brand-strong);
  text-decoration-color:var(--brand-strong);
}
.article-body-content blockquote{
  margin:2rem 0;
  padding:1rem 1.4rem;
  border-left:4px solid var(--brand);
  background:var(--brand-soft);
  border-radius:0 var(--radius) var(--radius) 0;
  color:var(--ink-2);
}
.article-body-content ul,
.article-body-content ol{
  padding-left:1.2rem;
  margin-bottom:1.4rem;
}
.article-body-content li{margin-bottom:.5rem}
.article-body-content code{
  background:var(--surface-2);
  border:1px solid var(--line);
  padding:.12rem .4rem;
  border-radius:.45rem;
  font-size:.92em;
}
.article-body-content pre{
  background:#1e2c28;
  color:#e5f2ec;
  padding:1.2rem 1.4rem;
  border-radius:var(--radius);
  overflow-x:auto;
  margin:1.6rem 0;
}
.article-body-content pre code{background:transparent;border:0;color:inherit}
.article-body-content table{
  width:100%;
  border-collapse:collapse;
  margin:1.6rem 0;
  background:#fff;
}
.article-body-content th,
.article-body-content td{
  border:1px solid var(--line-2);
  padding:.7rem .9rem;
  text-align:left;
  vertical-align:top;
}
.article-body-content th{
  background:var(--surface-2);
  font-weight:700;
}
.article-body-content figcaption{
  text-align:center;
  color:var(--ink-3);
  font-size:.94rem;
  margin:-1.2rem auto 1.8rem;
  max-width:680px;
}

/* Article missing */
.article-missing{
  text-align:center;
  padding:3rem 1rem 1.2rem;
}
.missing-icon{
  width:64px;
  height:64px;
  border-radius:50%;
  background:var(--brand-soft);
  color:var(--brand);
  margin:0 auto 1.4rem;
  display:flex;
  align-items:center;
  justify-content:center;
}
.missing-icon svg{width:30px;height:30px}
.article-missing p{
  font-size:1.1rem;
  font-weight:700;
  color:var(--ink-2);
  margin-bottom:1.4rem;
}

/* Download / quick CTA */
.article-cta{
  padding-block:var(--space);
  position:relative;
}
.cta-panel{
  position:relative;
  overflow:hidden;
  background:#162621;
  color:#fff;
  border-radius:34px;
  padding:clamp(2rem,5vw,4.2rem);
  text-align:center;
}
.cta-panel::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  opacity:.14;
}
.cta-panel > *{position:relative;z-index:2}
.cta-panel h2{
  font-size:clamp(2rem,5vw,3rem);
  font-weight:800;
  letter-spacing:-.02em;
  margin-bottom:1rem;
}
.cta-panel p{
  color:rgba(255,255,255,.8);
  max-width:680px;
  margin:0 auto 2.1rem;
  font-size:1.06rem;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:.9rem;
}
.cta-actions .btn{
  min-height:48px;
  min-width:150px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}

/* Related cards */
.related-section{
  padding-bottom:var(--space);
}
.section-header{
  display:flex;
  justify-content:space-between;
  align-items:end;
  gap:1.5rem;
  margin-bottom:2.4rem;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  font-weight:800;
  letter-spacing:.08em;
  color:var(--brand);
  font-size:.9rem;
  margin-bottom:.55rem;
}
.eyebrow::before{
  content:"";
  width:20px;
  height:2px;
  background:var(--accent);
  display:inline-block;
  border-radius:2px;
}
.section-header h2{
  font-size:clamp(1.8rem,3.5vw,2.5rem);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.25;
  margin:0;
}
.related-card{
  height:100%;
  background:#fff;
  border:1px solid var(--line);
  border-radius:24px;
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .25s cubic-bezier(.2,0,0,1),box-shadow .25s cubic-bezier(.2,0,0,1),border-color .25s cubic-bezier(.2,0,0,1);
}
.related-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
  border-color:rgba(22,122,95,.28);
}
.related-card img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-bottom:1px solid var(--line);
}
.related-body{
  padding:1.25rem 1.35rem 1.5rem;
  display:flex;
  flex-direction:column;
  gap:.7rem;
  flex:1;
}
.rel-cat{
  display:inline-flex;
  align-self:flex-start;
  background:var(--brand-soft);
  color:var(--brand-strong);
  font-weight:700;
  font-size:.83rem;
  padding:.18rem .8rem;
  border-radius:var(--radius-pill);
  letter-spacing:.03em;
}
.related-body h3{
  font-size:1.2rem;
  font-weight:700;
  margin:0;
  line-height:1.45;
}
.related-body h3 a:hover{color:var(--brand)}
.related-body p{
  color:var(--ink-2);
  font-size:.97rem;
  margin:0;
  line-height:1.8;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-more{
  margin-top:auto;
  color:var(--brand);
  font-weight:700;
  display:inline-flex;
  align-items:center;
  gap:.35rem;
}
.related-more svg{width:16px;height:16px;transition:transform .2s ease}
.related-card:hover .related-more svg{transform:translateX(3px)}

/* Footer */
.site-footer{
  background:#162621;
  color:rgba(255,255,255,.78);
  padding-top:4rem;
  font-size:.96rem;
}
.footer-top{
  display:grid;
  grid-template-columns:2fr 1fr 1fr;
  gap:2.5rem;
  padding-bottom:2.6rem;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:.6rem;
  font-weight:800;
  color:#fff;
  font-size:1.3rem;
  letter-spacing:-.01em;
  margin-bottom:1.1rem;
}
.footer-logo{
  width:2rem;
  height:2rem;
  background:var(--brand);
  border-radius:14px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
.footer-logo svg{width:1.1rem;height:1.1rem}
.footer-about{
  max-width:470px;
  color:rgba(255,255,255,.62);
  line-height:1.85;
  margin:0;
}
.footer-title{
  color:#fff;
  font-weight:700;
  margin-bottom:1.1rem;
}
.footer-links{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:.65rem;
}
.footer-links a{
  color:rgba(255,255,255,.7);
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  transition:color .2s ease,transform .2s ease;
}
.footer-links a::before{
  content:"";
  width:5px;
  height:5px;
  border-radius:50%;
  background:rgba(255,255,255,.35);
  transition:background .2s ease;
}
.footer-links a:hover{
  color:#fff;
  transform:translateX(3px);
}
.footer-links a:hover::before{
  background:var(--brand);
}
.footer-legal{
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:.8rem;
  padding:1.5rem 0;
  color:rgba(255,255,255,.5);
  font-size:.9rem;
}

/* Responsive */
@media (max-width:991.98px){
  .article-shell{padding:1.4rem 1.2rem}
  .footer-top{grid-template-columns:1fr 1fr;gap:2.2rem 1.6rem}
}
@media (max-width:767.98px){
  body{font-size:15px}
  .site-header{padding-inline:.65rem}
  .glass-navbar{padding:.45rem .6rem}
  .navbar-brand{font-size:1.02rem}
  .article-hero{padding:2.6rem 0 3rem}
  .article-title{font-size:clamp(1.65rem,7.4vw,2.4rem)}
  .article-shell{border-radius:22px}
  .article-body-content{font-size:1rem;line-height:1.9}
  .article-body-content h2{font-size:1.5rem}
  .cta-panel{border-radius:24px;text-align:left}
  .cta-actions{justify-content:flex-start}
  .section-header{flex-direction:column;align-items:flex-start;gap:1rem}
  .section-header h2{font-size:2rem}
  .related-body{padding:1.1rem 1.15rem 1.3rem}
  .footer-top{grid-template-columns:1fr}
  .footer-legal{flex-direction:column}
}
@media (max-width:520px){
  .cta-actions .btn{width:100%}
  .article-meta-row{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root {
            --primary: #1B6B59;
            --primary-dark: #125445;
            --primary-soft: rgba(27, 107, 89, 0.10);
            --accent: #9E803F;
            --ink: #222824;
            --text: #3E4540;
            --muted: #69736D;
            --bg: #F5F3EE;
            --bg-deep: #103B32;
            --surface: #FFFFFF;
            --white: #FFFFFF;
            --line: rgba(34, 40, 36, 0.10);
            --line-strong: rgba(34, 40, 36, 0.17);
            --radius: 20px;
            --radius-sm: 12px;
            --shadow: 0 2px 4px rgba(0,0,0,0.04), 0 12px 30px rgba(0,0,0,0.05);
            --shadow-hover: 0 4px 8px rgba(0,0,0,0.05), 0 18px 42px rgba(0,0,0,0.08);
            --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            --ease: cubic-bezier(0.2, 0, 0, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s var(--ease);
        }

        a:hover {
            color: var(--primary);
        }

        button,
        input {
            font-family: inherit;
        }

        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        p {
            margin-top: 0;
        }

        h1,
        h2,
        h3,
        h4,
        .h1,
        .h2,
        .h3 {
            color: var(--ink);
            font-weight: 700;
            letter-spacing: -0.01em;
        }

        .container {
            max-width: 1280px;
        }

        :focus-visible {
            outline: 2px solid rgba(27, 107, 89, 0.65);
            outline-offset: 3px;
            border-radius: 4px;
        }

        .skip-link {
            position: fixed;
            top: -60px;
            left: 24px;
            z-index: 2000;
            padding: 8px 16px;
            background: #fff;
            border-radius: 999px;
            color: var(--primary) !important;
            font-weight: 600;
            box-shadow: var(--shadow);
            transition: top 0.2s var(--ease);
        }

        .skip-link:focus {
            top: 16px;
            color: var(--primary) !important;
        }

        /* ------------------------------------------------------------
        悬浮胶囊导航
        ------------------------------------------------------------ */
        .site-header {
            position: sticky;
            top: 12px;
            z-index: 1080;
            padding: 0;
        }

        .site-header .container-fluid {
            max-width: 1280px;
            padding-left: 16px;
            padding-right: 16px;
        }

        .glass-navbar {
            background: rgba(255, 255, 255, 0.82);
            -webkit-backdrop-filter: blur(18px);
            backdrop-filter: blur(18px);
            border: 1px solid rgba(34, 40, 36, 0.07);
            border-radius: 999px;
            padding: 8px 12px 8px 16px;
            box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03), 0 10px 32px rgba(31, 45, 40, 0.08);
            min-height: 62px;
        }

        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 800;
            font-size: 18px;
            color: var(--ink);
            letter-spacing: -0.02em;
            white-space: nowrap;
            margin: 0;
        }

        .navbar-brand:hover {
            color: var(--ink);
        }

        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 30px;
            height: 30px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            flex: 0 0 auto;
        }

        .brand-mark svg {
            width: 16px;
            height: 16px;
        }

        .glass-navbar .navbar-toggler {
            width: 42px;
            height: 40px;
            border: 1px solid rgba(34, 40, 36, 0.09);
            border-radius: 999px;
            padding: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--ink);
        }

        .glass-navbar .navbar-toggler:hover {
            background: rgba(27, 107, 89, 0.06);
        }

        .burger-lines {
            display: inline-flex;
            flex-direction: column;
            justify-content: center;
            gap: 4px;
            width: 18px;
            height: 18px;
        }

        .burger-lines span {
            display: block;
            height: 2px;
            border-radius: 2px;
            background: var(--ink);
        }

        .navbar-nav {
            gap: 0;
        }

        .nav-item {
            position: relative;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            padding: 8px 14px !important;
            border-radius: 999px;
            position: relative;
            transition: background 0.2s var(--ease), color 0.2s var(--ease);
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(27, 107, 89, 0.05);
        }

        .nav-link.active {
            color: var(--primary-dark);
            font-weight: 700;
            background: var(--primary-soft);
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 2px;
            transform: translateX(-50%);
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--primary);
        }

        .navbar-download-btn,
        .btn {
            border-radius: 999px;
            transition: all 0.25s var(--ease);
        }

        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            font-weight: 600;
            padding: 10px 20px;
            font-size: 15px;
            box-shadow: 0 6px 18px rgba(27, 107, 89, 0.22);
        }

        .btn-primary:hover,
        .btn-primary:active,
        .btn-primary:focus {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(27, 107, 89, 0.28);
        }

        .btn-outline-light {
            border: 1px solid rgba(255, 255, 255, 0.54);
            color: #fff;
            border-radius: 999px;
            padding: 10px 22px;
            font-weight: 600;
            font-size: 15px;
            background: transparent;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.9);
        }

        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--surface);
            color: var(--primary);
            font-weight: 700;
            border: 1px solid var(--line);
            border-radius: 999px;
            padding: 11px 22px;
            font-size: 15px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
        }

        .btn-accent:hover {
            border-color: rgba(27, 107, 89, 0.35);
            color: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: var(--shadow-hover);
        }

        .btn-link-clean {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: rgba(255, 255, 255, 0.86);
            font-weight: 600;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.24);
            padding: 10px 18px;
            font-size: 15px;
            transition: all 0.2s var(--ease);
        }

        .btn-link-clean:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }

        .btn-white {
            background: #fff;
            color: var(--primary-dark);
            font-weight: 700;
            border-radius: 999px;
            padding: 11px 24px;
            font-size: 16px;
            border: 1px solid transparent;
            box-shadow: 0 8px 22px rgba(0, 0, 0, 0.13);
        }

        .btn-white:hover {
            background: #f7f7f7;
            color: var(--primary-dark);
            transform: translateY(-1px);
        }

        .btn-outline-white {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.38);
            color: #fff;
            font-weight: 600;
            border-radius: 999px;
            padding: 11px 24px;
            font-size: 16px;
        }

        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            transform: translateY(-1px);
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            color: rgba(255, 255, 255, 0.72);
            background: rgba(255, 255, 255, 0.08);
            border-radius: 999px;
            padding: 6px 16px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            margin-bottom: 18px;
            width: fit-content;
        }

        /* 分类页首屏 Hero */
        .category-hero-section {
            position: relative;
            color: rgba(255, 255, 255, 0.84);
            padding: 88px 0 110px;
            isolation: isolate;
            overflow: hidden;
        }

        .category-hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            background-color: #0d302b;
            z-index: -2;
        }

        .category-hero-bg::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(12, 37, 32, 0.92) 0%, rgba(12, 37, 32, 0.76) 44%, rgba(18, 52, 45, 0.54) 100%);
            z-index: -1;
        }

        .category-breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.62);
            margin-bottom: 16px;
        }

        .category-breadcrumb a {
            color: rgba(255, 255, 255, 0.62);
            border-bottom: 1px solid rgba(255, 255, 255, 0.22);
        }

        .category-breadcrumb a:hover {
            color: #fff;
            border-color: #fff;
        }

        .category-breadcrumb .sep {
            opacity: 0.4;
        }

        .category-hero-title {
            font-size: clamp(36px, 5vw, 52px);
            line-height: 1.2;
            letter-spacing: -0.03em;
            font-weight: 800;
            color: #fff;
            margin: 0 0 14px;
        }

        .category-hero-lead {
            max-width: 760px;
            font-size: 18px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.82);
            margin-bottom: 30px;
        }

        .hero-meta-indicators {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
        }

        .hero-meta-indicators i {
            color: #fff;
            margin-right: 6px;
            font-size: 13px;
        }

        /* 通用板块间距 */
        .category-section {
            padding: 84px 0;
        }

        .section-heading {
            margin-bottom: 38px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-weight: 700;
            font-size: 13px;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 5px 14px;
            border-radius: 999px;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .section-title {
            font-size: clamp(26px, 3vw, 34px);
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            color: var(--ink);
        }

        .section-intro {
            color: var(--muted);
            font-size: 17px;
            max-width: 760px;
            line-height: 1.9;
        }

        .text-mute-mid {
            color: var(--muted);
        }

        /* 卡片 / 下载路径平台 */
        .channel-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .channel-card {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 26px;
            box-shadow: var(--shadow);
            transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease), border-color 0.22s var(--ease);
            display: flex;
            flex-direction: column;
            min-height: 360px;
        }

        .channel-card:hover {
            transform: translateY(-4px);
            border-color: rgba(27, 107, 89, 0.22);
            box-shadow: var(--shadow-hover);
        }

        .channel-icon {
            width: 54px;
            height: 54px;
            border-radius: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-soft);
            color: var(--primary);
            margin-bottom: 20px;
            font-size: 24px;
        }

        .channel-card h3 {
            font-size: 19px;
            font-weight: 800;
            margin-bottom: 10px;
            color: var(--ink);
            letter-spacing: -0.01em;
        }

        .channel-card p {
            color: var(--muted);
            font-size: 15px;
            line-height: 1.85;
            flex: 1;
        }

        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 18px;
        }

        .tag-list .tag {
            background: var(--bg);
            border-radius: 999px;
            font-size: 13px;
            color: var(--text);
            padding: 5px 12px;
            border: 1px solid var(--line);
        }

        .tag-green {
            background: var(--primary-soft) !important;
            color: var(--primary-dark) !important;
            border-color: transparent !important;
        }

        .card-footer-link {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            margin-top: 14px;
            color: var(--primary);
            font-weight: 700;
            font-size: 14px;
            border-bottom: 1px solid transparent;
            width: fit-content;
        }

        .card-footer-link i {
            font-size: 13px;
            transition: transform 0.2s var(--ease);
        }

        .card-footer-link:hover {
            border-color: rgba(27, 107, 89, 0.3);
        }

        .card-footer-link:hover i {
            transform: translateX(4px);
        }

        /* 图文交替 */
        .bordered-split-block {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: calc(var(--radius) + 6px);
            box-shadow: var(--shadow);
            overflow: hidden;
        }

        .split-media {
            min-height: 320px;
            height: 100%;
            background: var(--ink);
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
        }

        .split-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }

        .split-body {
            padding: 48px 42px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .split-body .step-index {
            font-size: 14px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.04em;
            margin-bottom: 10px;
        }

        .split-body h3 {
            font-size: 24px;
            font-weight: 800;
            color: var(--ink);
            margin-bottom: 14px;
        }

        .split-body p {
            color: var(--text);
            font-size: 16px;
            line-height: 1.9;
            margin-bottom: 16px;
        }

        .split-body ul.checks {
            display: grid;
            gap: 10px;
            color: var(--text);
            margin: 6px 0 0;
        }

        .split-body ul.checks li {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            font-size: 15px;
            line-height: 1.8;
        }

        .split-body ul.checks li i {
            color: var(--primary);
            font-size: 15px;
            margin-top: 5px;
        }

        /* 核对列表区 */
        .check-list-section {
            background: #EDF1EC;
        }

        .check-list-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .check-item {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 26px 22px;
            box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
            border: 1px solid var(--line);
            transition: box-shadow 0.2s var(--ease), transform 0.2s var(--ease);
        }

        .check-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }

        .check-num {
            font-size: 13px;
            font-weight: 800;
            color: var(--primary);
            background: var(--primary-soft);
            display: inline-flex;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
        }

        .check-item h3 {
            font-size: 17px;
            font-weight: 800;
            margin-bottom: 8px;
            color: var(--ink);
        }

        .check-item p {
            margin: 0;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.75;
        }

        /* FAQ */
        .faq-panel {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--line);
            box-shadow: var(--shadow);
            padding: 30px 32px;
        }

        .faq-panel .accordion-item {
            background: transparent;
            border: 0;
            border-bottom: 1px solid var(--line);
            border-radius: 0 !important;
        }

        .faq-panel .accordion-item:last-child {
            border-bottom: 0;
        }

        .faq-panel .accordion-button {
            background: transparent;
            box-shadow: none;
            color: var(--ink);
            font-weight: 700;
            font-size: 17px;
            padding: 20px 36px 20px 0;
            border-radius: 0;
            position: relative;
            line-height: 1.6;
        }

        .faq-panel .accordion-button::after {
            background: none;
            content: "+";
            font-size: 22px;
            font-weight: 300;
            color: var(--primary);
            width: auto;
            height: auto;
            transform: none;
            position: absolute;
            right: 2px;
            top: 18px;
            transition: transform 0.2s var(--ease);
        }

        .faq-panel .accordion-button:not(.collapsed)::after {
            content: "−";
            transform: rotate(0deg);
        }

        .faq-panel .accordion-button:not(.collapsed) {
            background: transparent;
            border-bottom: 1px solid transparent;
        }

        .faq-panel .accordion-button:focus {
            box-shadow: none;
        }

        .faq-panel .accordion-body {
            padding: 0 50px 22px 0;
            color: var(--text);
            font-size: 15px;
            line-height: 1.9;
        }

        /* 相关阅读推荐 */
        .related-section {
            background: #EAF0EC;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            background: var(--surface);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--line);
            box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
            transition: box-shadow 0.22s var(--ease), transform 0.22s var(--ease), border-color 0.22s var(--ease);
            height: 100%;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(27, 107, 89, 0.18);
        }

        .related-cover {
            aspect-ratio: 16 / 9;
            background: var(--ink);
            position: relative;
            overflow: hidden;
        }

        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s var(--ease);
        }

        .related-card:hover .related-cover img {
            transform: scale(1.03);
        }

        .related-body {
            padding: 24px 22px 22px;
        }

        .related-body .tag-badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            background: var(--primary-soft);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .related-body h3 {
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 8px;
            color: var(--ink);
            letter-spacing: -0.01em;
        }

        .related-body p {
            color: var(--muted);
            font-size: 15px;
            margin-bottom: 12px;
            line-height: 1.8;
        }

        .related-meta {
            color: var(--muted);
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 7px;
        }

        /* 大 CTA */
        .category-cta-section {
            position: relative;
            overflow: hidden;
            background: #0B2E29;
            color: #fff;
            padding: 70px 0;
            text-align: center;
        }

        .category-cta-section .category-cta-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            pointer-events: none;
        }

        .category-cta-section .cta-inner {
            position: relative;
        }

        .category-cta-section h2 {
            color: #fff;
            font-size: clamp(26px, 3vw, 36px);
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 14px;
        }

        .category-cta-section p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 17px;
            max-width: 640px;
            margin: 0 auto 28px;
            line-height: 1.85;
        }

        .category-cta-btn-row {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
        }

        /* 页脚 */
        .site-footer {
            background: #16231F;
            color: rgba(255, 255, 255, 0.6);
        }

        .site-footer .container {
            padding-top: 52px;
            padding-bottom: 26px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.8fr 0.8fr 1.2fr;
            gap: 40px;
            padding-bottom: 30px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.09);
        }

        .footer-brand {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.02em;
        }

        .footer-logo {
            display: inline-flex;
            width: 32px;
            height: 32px;
            background: rgba(255, 255, 255, 0.12);
            border-radius: 10px;
            align-items: center;
            justify-content: center;
        }

        .footer-logo svg {
            width: 16px;
            height: 16px;
        }

        .footer-about {
            margin: 16px 0 0;
            max-width: 480px;
            font-size: 15px;
            line-height: 1.85;
        }

        .footer-title {
            font-size: 14px;
            font-weight: 700;
            color: rgba(255, 255, 255, 0.92);
            letter-spacing: 0.04em;
            margin-bottom: 16px;
        }

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: color 0.2s var(--ease);
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 1px;
        }

        .footer-legal {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 10px;
            font-size: 13px;
            padding-top: 20px;
            text-align: left;
            color: rgba(255, 255, 255, 0.42);
        }

        @media (max-width: 991.98px) {
            .site-header {
                top: 8px;
                padding-left: 14px;
                padding-right: 14px;
            }

            .glass-navbar {
                border-radius: 28px;
                padding: 10px 14px;
            }

            .glass-navbar .navbar-collapse {
                background: rgba(255, 255, 255, 0.96);
                border-radius: 22px;
                margin-top: 10px;
                padding: 10px 12px;
                box-shadow: var(--shadow-hover);
                border: 1px solid var(--line);
            }

            .glass-navbar .navbar-nav {
                align-items: flex-start !important;
                gap: 4px;
            }

            .glass-navbar .nav-link {
                padding: 10px 14px !important;
                border-radius: 14px;
                width: 100%;
            }

            .nav-link.active::after {
                left: 16px;
                top: 50%;
                transform: translateY(-50%);
            }

            .navbar-download-btn {
                display: inline-flex;
                margin-top: 8px;
            }

            .channel-grid,
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .check-list-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .split-body {
                padding: 36px 28px;
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 767.98px) {
            .category-hero-section {
                padding: 70px 0 76px;
            }

            .category-hero-lead {
                font-size: 16px;
            }

            .hero-meta-indicators {
                gap: 12px;
            }

            .category-section {
                padding: 60px 0;
            }

            .channel-grid,
            .check-list-grid,
            .related-grid {
                grid-template-columns: 1fr;
            }

            .channel-card {
                min-height: auto;
            }

            .split-media img,
            .split-media {
                min-height: 240px;
            }

            .split-body {
                padding: 28px 24px;
            }

            .section-heading {
                margin-bottom: 26px;
            }

            .faq-panel {
                padding: 22px 20px;
            }

            .category-cta-btn-row {
                flex-direction: column;
                align-items: stretch;
                max-width: 320px;
                margin: 0 auto;
            }

            .category-cta-btn-row .btn {
                width: 100%;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 26px;
            }

            .site-footer .container {
                padding-top: 36px;
            }

            .footer-legal {
                flex-direction: column;
            }
        }

        @media (max-width: 520px) {
            .navbar-brand {
                font-size: 16px;
            }

            .brand-mark {
                width: 28px;
                height: 28px;
                border-radius: 8px;
            }

            body {
                font-size: 15px;
            }

            .category-hero-title {
                font-size: 34px;
            }

            .eyebrow {
                font-size: 13px;
            }

            .split-body h3 {
                font-size: 20px;
            }

            .check-list-grid {
                gap: 12px;
            }
        }

/* roulang page: category2 */
:root {
            --brand-primary: #2f6b5f;
            --brand-primary-dark: #24554b;
            --brand-accent: #b0864f;
            --brand-ink: #263129;
            --brand-soft: #f5f1e9;
            --brand-surface: #fffdfa;
            --brand-bg: #f7f5f0;
            --border-soft: rgba(38, 49, 41, .1);
            --shadow-soft: 0 1px 2px rgba(0, 0, 0, .03), 0 8px 30px rgba(0, 0, 0, .04);
            --shadow-hover: 0 4px 10px rgba(0, 0, 0, .04), 0 24px 44px rgba(38, 49, 41, .08);
            --radius-btn: 999px;
            --radius-card: 20px;
            --radius-panel: 24px;
            --space-section: clamp(60px, 8vw, 104px);
            --ease: cubic-bezier(.2, 0, 0, 1);
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--brand-ink);
            background: var(--brand-bg);
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color .22s var(--ease);
        }

        a:hover {
            color: var(--brand-primary);
        }

        img {
            max-width: 100%;
            object-fit: cover;
            display: block;
        }

        .container {
            max-width: 1180px;
        }

        .btn {
            border-radius: var(--radius-btn);
            font-weight: 600;
            padding: 10px 22px;
            border: 1px solid transparent;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: transform .2s var(--ease), box-shadow .2s var(--ease), background-color .2s var(--ease), border-color .2s var(--ease);
        }

        .btn-primary {
            background: var(--brand-primary);
            border-color: var(--brand-primary);
            color: #fff;
        }

        .btn-primary:hover,
        .btn-primary:active {
            background: var(--brand-primary-dark);
            border-color: var(--brand-primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(47, 107, 95, .2);
        }

        .btn-line {
            background: transparent;
            border-color: rgba(47, 107, 95, .4);
            color: var(--brand-primary);
        }

        .btn-line:hover,
        .btn-line:active {
            border-color: var(--brand-primary);
            background: rgba(47, 107, 95, .06);
            color: var(--brand-primary-dark);
            transform: translateY(-2px);
        }

        .btn:focus-visible {
            outline: 3px solid rgba(47, 107, 95, .28);
            outline-offset: 2px;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1080;
            padding-top: 14px;
            padding-bottom: 6px;
            background: linear-gradient(180deg, rgba(247, 245, 240, .92) 0%, rgba(247, 245, 240, .7) 60%, transparent 100%);
        }

        .glass-navbar {
            border-radius: var(--radius-btn);
            background: rgba(255, 255, 255, .72);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, .9);
            box-shadow: 0 8px 28px rgba(0, 0, 0, .05), 0 0 0 1px rgba(38, 49, 41, .04);
            padding: 10px 20px;
        }

        .navbar-brand {
            font-size: 1.22rem;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--brand-ink);
            letter-spacing: -.01em;
        }

        .navbar-brand .brand-mark {
            width: 36px;
            height: 36px;
            border-radius: 12px;
            background: var(--brand-primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 6px 18px rgba(47, 107, 95, .16);
        }

        .brand-mark svg {
            width: 22px;
            height: 22px;
        }

        .navbar-nav .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: #3a443e;
            border-radius: 999px;
            padding: 8px 16px !important;
            position: relative;
            white-space: nowrap;
        }

        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link:focus-visible {
            color: var(--brand-primary);
            background: rgba(47, 107, 95, .06);
        }

        .navbar-nav .nav-link.active {
            color: var(--brand-primary-dark);
            font-weight: 600;
        }

        .navbar-nav .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 3px;
            border-radius: 3px;
            background: var(--brand-primary);
        }

        .navbar-toggler {
            border: 0;
            box-shadow: none !important;
            padding: 8px 10px;
            border-radius: 999px;
        }

        .burger-lines {
            display: inline-flex;
            flex-direction: column;
            gap: 5px;
            width: 20px;
        }

        .burger-lines span {
            display: block;
            height: 2px;
            border-radius: 2px;
            background: var(--brand-ink);
            width: 100%;
            transition: .2s var(--ease);
        }

        .navbar-download-btn {
            padding: 8px 20px;
            font-size: 14px;
        }

        /* Hero */
        .page-hero {
            position: relative;
            overflow: hidden;
            padding: clamp(44px, 6vw, 88px) 0;
            border-bottom: 1px solid var(--border-soft);
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background:
                linear-gradient(90deg, rgba(245, 241, 233, .94), rgba(245, 241, 233, .72)),
                url('/assets/images/backpic/back-2.png') no-repeat center / cover;
            opacity: .9;
            z-index: 0;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            z-index: 0;
            background: radial-gradient(45% 60% at 85% 18%, rgba(176, 134, 79, .1), transparent 100%);
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 14px;
            border-radius: 40px;
            border: 1px solid rgba(47, 107, 95, .18);
            background: rgba(255, 253, 250, .74);
            color: var(--brand-primary-dark);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: .02em;
        }

        .hero-badge .badge-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--brand-primary);
            box-shadow: 0 0 0 4px rgba(47, 107, 95, .12);
        }

        .page-hero h1 {
            font-size: clamp(2.4rem, 5vw, 4rem);
            font-weight: 700;
            letter-spacing: -.03em;
            line-height: 1.1;
            margin: 22px 0 16px;
            color: var(--brand-ink);
        }

        .page-hero .hero-lead {
            max-width: 680px;
            font-size: clamp(1.05rem, 1.6vw, 1.2rem);
            line-height: 1.9;
            color: #4a554d;
            margin-bottom: 28px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .hero-actions .btn {
            min-height: 46px;
            padding-left: 28px;
            padding-right: 28px;
        }

        /* Section scaffolding */
        .section {
            padding: var(--space-section) 0;
        }

        .section-head {
            max-width: 760px;
            margin-bottom: 48px;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-primary);
            letter-spacing: .04em;
        }

        .eyebrow::before {
            content: "";
            width: 24px;
            height: 1px;
            background: var(--brand-accent);
        }

        .eyebrow.center::after {
            content: "";
            width: 24px;
            height: 1px;
            background: var(--brand-accent);
            margin-left: 10px;
        }

        .section-title {
            font-size: clamp(1.8rem, 3vw, 2.6rem);
            font-weight: 700;
            letter-spacing: -.02em;
            line-height: 1.28;
            margin: 14px 0 12px;
        }

        .section-title .title-mark {
            color: var(--brand-primary);
        }

        .section-intro {
            font-size: 16px;
            color: #5a635c;
            margin-bottom: 0;
            line-height: 1.95;
        }

        /* Help cards */
        .help-card {
            position: relative;
            height: 100%;
            padding: 28px 24px 24px;
            border-radius: var(--radius-card);
            background: var(--brand-surface);
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-soft);
            transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease);
            overflow: hidden;
        }

        .help-card::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 3px;
            background: var(--brand-primary);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .3s var(--ease);
        }

        .help-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(47, 107, 95, .2);
        }

        .help-card:hover::after {
            transform: scaleX(1);
        }

        .help-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(47, 107, 95, .1);
            color: var(--brand-primary);
            margin-bottom: 18px;
        }

        .help-icon svg {
            width: 25px;
            height: 25px;
        }

        .help-card h3 {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: -.01em;
            margin-bottom: 10px;
        }

        .help-card p {
            color: #5f6861;
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 18px;
        }

        .card-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-primary);
        }

        .card-more svg {
            width: 16px;
            height: 16px;
            transition: transform .2s var(--ease);
        }

        .card-more:hover svg {
            transform: translateX(4px);
        }

        /* Visual guide section */
        .visual-guide {
            background: linear-gradient(180deg, rgba(238, 241, 236, .5), rgba(238, 241, 236, .2));
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
        }

        .guide-block {
            margin-bottom: clamp(40px, 6vw, 70px);
        }

        .guide-block:last-child {
            margin-bottom: 0;
        }

        .guide-text {
            padding: 12px 0;
        }

        .guide-text h3 {
            font-size: clamp(1.3rem, 2vw, 1.7rem);
            font-weight: 700;
            letter-spacing: -.02em;
            margin-bottom: 14px;
        }

        .guide-text p {
            font-size: 16px;
            color: #4f5952;
            margin-bottom: 18px;
            line-height: 1.9;
        }

        .guide-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .guide-list li {
            position: relative;
            padding-left: 26px;
            margin-bottom: 9px;
            color: #39433d;
        }

        .guide-list li::before {
            content: "";
            position: absolute;
            left: 2px;
            top: 12px;
            width: 10px;
            height: 10px;
            border: 2px solid var(--brand-primary);
            border-radius: 50%;
            background: #fff;
        }

        .guide-figure {
            margin: 0;
            border-radius: var(--radius-panel);
            border: 1px solid rgba(38, 49, 41, .1);
            background: #fff;
            padding: 8px;
            box-shadow: var(--shadow-soft);
        }

        .guide-figure img {
            width: 100%;
            aspect-ratio: 16 / 10.5;
            object-fit: cover;
            border-radius: calc(var(--radius-panel) - 8px);
        }

        .guide-figure figcaption {
            padding: 10px 6px 4px;
            color: #7a817c;
            font-size: 13px;
        }

        /* Steps section */
        .steps-section {
            background: #ebeae4;
        }

        .steps-panel {
            border-radius: var(--radius-panel);
            background: var(--brand-surface);
            border: 1px solid var(--border-soft);
            padding: clamp(28px, 5vw, 54px);
            box-shadow: var(--shadow-soft);
        }

        .step-list {
            display: grid;
            grid-template-columns: repeat(1, 1fr);
        }

        .step-item {
            display: grid;
            grid-template-columns: 64px 1fr;
            gap: 20px;
            padding: 24px 0;
            border-bottom: 1px solid var(--border-soft);
            align-items: start;
        }

        .step-item:last-child {
            border-bottom: 0;
        }

        .step-num {
            width: 56px;
            height: 56px;
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 500;
            background: rgba(47, 107, 95, .1);
            color: var(--brand-primary);
            border: 1px solid rgba(47, 107, 95, .14);
            font-variant-numeric: tabular-nums;
        }

        .step-item h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .step-item p {
            color: #5a635c;
            font-size: 15px;
            line-height: 1.85;
            margin: 0;
        }

        .steps-cta {
            margin-top: 32px;
        }

        /* FAQ */
        .faq-section {
            background: var(--brand-surface);
        }

        .faq-inner {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-list .accordion-item {
            background: transparent;
            border: 0;
            border-bottom: 1px solid var(--border-soft);
            border-radius: 0 !important;
        }

        .faq-list .accordion-item:first-child {
            border-top: 1px solid var(--border-soft);
        }

        .faq-list .accordion-button {
            background: transparent;
            box-shadow: none;
            padding: 24px 46px 24px 2px;
            font-size: 17px;
            font-weight: 600;
            color: var(--brand-ink);
            border: 0;
            transition: color .2s var(--ease);
            line-height: 1.5;
        }

        .faq-list .accordion-button:hover {
            color: var(--brand-primary);
        }

        .faq-list .accordion-button:not(.collapsed) {
            background: transparent;
            color: var(--brand-primary-dark);
            box-shadow: none;
        }

        .faq-list .accordion-button:focus-visible {
            outline: 0;
            box-shadow: inset 0 0 0 2px rgba(47, 107, 95, .2);
            border-radius: 8px;
        }

        .faq-list .accordion-button::after {
            position: absolute;
            right: 6px;
            width: 20px;
            height: 20px;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232f6b5f' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M5 12h14M12 5v14'/%3E%3C/svg%3E");
            background-size: contain;
            opacity: .8;
            transition: transform .2s var(--ease), opacity .2s var(--ease);
        }

        .faq-list .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            opacity: .9;
        }

        .faq-list .accordion-body {
            padding: 0 48px 28px 4px;
            font-size: 16px;
            color: #556159;
            line-height: 1.95;
        }

        /* End CTA */
        .cta-download {
            position: relative;
            background: #e6ece7 url('/assets/images/backpic/back-3.webp') no-repeat center / cover;
        }

        .cta-download::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(230, 236, 231, .92), rgba(230, 236, 231, .62));
        }

        .cta-download .container {
            position: relative;
            z-index: 2;
        }

        .cta-panel {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            border-radius: var(--radius-panel);
            background: rgba(255, 253, 250, .9);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, .8);
            padding: clamp(32px, 5vw, 60px);
            box-shadow: 0 18px 50px rgba(38, 49, 41, .08);
        }

        .cta-panel h2 {
            font-size: clamp(1.7rem, 2.6vw, 2.3rem);
            font-weight: 700;
            letter-spacing: -.02em;
            margin-bottom: 10px;
        }

        .cta-panel p {
            color: #556159;
            max-width: 700px;
            margin: 0;
            font-size: 16px;
        }

        .cta-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .cta-btn-group .btn {
            min-height: 48px;
        }

        /* Footer */
        .site-footer {
            background: #20302a;
            color: rgba(255, 255, 255, .7);
            padding: 64px 0 0;
            margin-top: 0;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.6fr .8fr .8fr;
            gap: clamp(28px, 5vw, 80px);
            padding-bottom: 46px;
            border-bottom: 1px solid rgba(255, 255, 255, .1);
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-logo {
            width: 32px;
            height: 32px;
            border-radius: 11px;
            background: var(--brand-primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .footer-logo svg {
            width: 20px;
            height: 20px;
        }

        .footer-about {
            font-size: 14px;
            max-width: 460px;
            line-height: 1.9;
            color: rgba(255, 255, 255, .58);
            margin-bottom: 0;
        }

        .footer-title {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            letter-spacing: .04em;
            margin-bottom: 14px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, .6);
            font-size: 14px;
        }

        .footer-links a:hover {
            color: #fff;
        }

        .footer-legal {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 36px;
            justify-content: space-between;
            padding: 22px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, .38);
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            .glass-navbar {
                border-radius: 28px;
            }

            .navbar-collapse {
                background: rgba(255, 255, 255, .95);
                border-radius: 22px;
                padding: 16px 12px;
                margin-top: 10px;
                box-shadow: 0 18px 44px rgba(0, 0, 0, .08);
            }

            .navbar-nav .nav-link {
                border-radius: 14px;
                padding: 12px 16px !important;
            }

            .navbar-nav .nav-link.active::after {
                left: 22px;
                transform: none;
                width: 4px;
                height: 4px;
                border-radius: 50%;
                bottom: 17px;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 767.98px) {
            .section-title {
                letter-spacing: -.015em;
            }

            .section-intro {
                font-size: 15px;
            }

            .page-hero .hero-actions .btn {
                flex: 1 1 46%;
            }

            .guide-figure img {
                aspect-ratio: 4 / 3;
            }

            .step-list {
                grid-template-columns: 1fr;
            }

            .step-item {
                grid-template-columns: 44px 1fr;
                gap: 12px;
                padding: 18px 0;
            }

            .step-num {
                width: 44px;
                height: 44px;
                border-radius: 14px;
                font-size: 17px;
            }

            .faq-list .accordion-body {
                padding-right: 0;
            }

            .faq-list .accordion-button {
                font-size: 16px;
                padding-right: 40px;
            }

            .cta-panel {
                padding: 30px 22px;
            }

            .cta-btn-group .btn {
                flex: 1 1 100%;
            }
        }

        @media (max-width: 575.98px) {
            body {
                font-size: 15px;
            }

            .site-header {
                padding-top: 8px;
            }

            .glass-navbar {
                padding: 8px 12px;
            }

            .navbar-brand {
                font-size: 1.08rem;
            }

            .navbar-brand .brand-mark {
                width: 32px;
                height: 32px;
                border-radius: 10px;
            }

            .brand-mark svg {
                width: 19px;
                height: 19px;
            }

            .help-card {
                padding: 22px 20px;
            }

            .footer-legal {
                flex-direction: column;
                gap: 4px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1e7f68;
            --primary-dark: #176b58;
            --primary-soft: rgba(30, 127, 104, .11);
            --accent: #a8813f;
            --accent-soft: rgba(168, 129, 63, .10);
            --text: #25332d;
            --text-2: #5b6b63;
            --text-3: #8a9891;
            --bg: #f6f4ef;
            --bg-soft: #eef2ef;
            --card: #ffffff;
            --border: rgba(31, 68, 55, .10);
            --radius: 18px;
            --radius-lg: 26px;
            --shadow-sm: 0 1px 2px rgba(32, 46, 40, .04), 0 8px 24px rgba(32, 46, 40, .04);
            --shadow-md: 0 2px 4px rgba(32, 46, 40, .05), 0 18px 40px rgba(32, 46, 40, .06);
            --ease: cubic-bezier(.2, 0, 0, 1);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s var(--ease), background-color .2s var(--ease), border-color .2s var(--ease);
        }

        a:hover {
            color: var(--primary);
        }

        ::selection {
            background: var(--primary);
            color: #fff;
        }

        .container {
            max-width: 1180px;
        }

        .section {
            padding: 86px 0;
        }

        .section-soft {
            background: var(--bg-soft);
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-size: .82rem;
            font-weight: 600;
            letter-spacing: .16em;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-head {
            max-width: 760px;
            margin-bottom: 42px;
        }

        .section-head h2 {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 700;
            letter-spacing: -.02em;
            line-height: 1.18;
            color: var(--text);
            margin-bottom: 12px;
        }

        .section-head p {
            color: var(--text-2);
            font-size: 1.04rem;
            margin: 0;
        }

        .btn {
            border-radius: 999px;
            padding: .68rem 1.35rem;
            font-weight: 500;
            transition: transform .2s var(--ease), box-shadow .2s var(--ease), background-color .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
        }

        .btn:focus,
        .btn-ghost:focus,
        .btn:focus-visible,
        .form-control:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(30, 127, 104, .20);
        }

        .btn-primary {
            --bs-btn-color: #ffffff;
            --bs-btn-bg: var(--primary);
            --bs-btn-border-color: var(--primary);
            --bs-btn-hover-color: #ffffff;
            --bs-btn-hover-bg: var(--primary-dark);
            --bs-btn-hover-border-color: var(--primary-dark);
            --bs-btn-active-color: #ffffff;
            --bs-btn-active-bg: var(--primary-dark);
            --bs-btn-active-border-color: var(--primary-dark);
            box-shadow: 0 10px 24px -10px rgba(30, 127, 104, .55);
        }

        .btn-primary:hover {
            transform: translateY(-1px);
            box-shadow: 0 14px 28px -10px rgba(30, 127, 104, .52);
        }

        .btn-outline-primary {
            --bs-btn-color: var(--primary);
            --bs-btn-border-color: var(--primary);
            --bs-btn-hover-color: #ffffff;
            --bs-btn-hover-bg: var(--primary);
            --bs-btn-hover-border-color: var(--primary);
            --bs-btn-active-bg: var(--primary-dark);
            --bs-btn-active-border-color: var(--primary-dark);
        }

        .btn-outline-primary:hover {
            transform: translateY(-1px);
        }

        .btn-white {
            background: #fff;
            color: var(--primary-dark);
            border: 1px solid #fff;
            font-weight: 600;
        }

        .btn-white:hover {
            background: #e9f4ef;
            color: var(--primary-dark);
            transform: translateY(-1px);
        }

        .btn-outline-light {
            border-color: rgba(255, 255, 255, .7);
            color: #fff;
            font-weight: 500;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .12);
            color: #fff;
            border-color: #fff;
        }

        .btn-lg {
            padding: .8rem 1.75rem;
            font-size: 1.02rem;
        }

        /* ===== 悬浮胶囊导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            width: 100%;
            z-index: 1080;
            padding: 14px 16px 0;
            pointer-events: none;
        }

        .glass-navbar {
            pointer-events: auto;
            max-width: 1200px;
            margin: 0 auto;
            padding: 10px 12px 10px 20px;
            background: rgba(248, 247, 243, .88);
            -webkit-backdrop-filter: blur(18px);
            backdrop-filter: blur(18px);
            border: 1px solid rgba(255, 255, 255, .64);
            border-radius: 999px;
            box-shadow: var(--shadow-sm);
        }

        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            padding: 0;
            margin-right: 0;
            color: var(--text);
            font-weight: 700;
            font-size: 1.14rem;
            letter-spacing: -.01em;
            white-space: nowrap;
        }

        .navbar-brand:hover {
            color: var(--text);
        }

        .brand-mark {
            width: 38px;
            height: 38px;
            border-radius: 13px;
            background: var(--primary);
            color: #fff;
            display: inline-flex;
            justify-content: center;
            align-items: center;
            box-shadow: 0 6px 16px -6px rgba(30, 127, 104, .6);
        }

        .brand-mark svg {
            width: 20px;
            height: 20px;
        }

        .navbar-nav {
            gap: 2px;
        }

        .nav-link {
            border-radius: 999px;
            padding: .55rem 1.05rem;
            font-weight: 500;
            color: var(--text-2);
            transition: background-color .2s var(--ease), color .2s var(--ease);
            position: relative;
        }

        .nav-link:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .nav-link.active {
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 600;
        }

        .nav-link.active::before {
            content: "";
            display: inline-block;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
            margin-right: 7px;
            vertical-align: middle;
        }

        .navbar-download-btn {
            color: #fff;
            border-radius: 999px;
            padding: .55rem 1.2rem;
            font-size: .95rem;
            font-weight: 500;
        }

        .navbar-toggler {
            border: none;
            box-shadow: none !important;
            width: 44px;
            height: 44px;
            display: inline-flex;
            justify-content: center;
            align-items: center;
            color: var(--text-2);
        }

        .burger-lines {
            width: 24px;
            height: 16px;
            display: block;
            position: relative;
        }

        .burger-lines span {
            position: absolute;
            left: 0;
            width: 100%;
            height: 2px;
            border-radius: 2px;
            background: currentColor;
            transition: all .25s var(--ease);
        }

        .burger-lines span:nth-child(1) {
            top: 0;
        }

        .burger-lines span:nth-child(2) {
            top: 7px;
        }

        .burger-lines span:nth-child(3) {
            top: 14px;
        }

        .navbar-toggler[aria-expanded="true"] .burger-lines span:nth-child(1) {
            top: 7px;
            transform: rotate(45deg);
        }

        .navbar-toggler[aria-expanded="true"] .burger-lines span:nth-child(2) {
            opacity: 0;
        }

        .navbar-toggler[aria-expanded="true"] .burger-lines span:nth-child(3) {
            top: 7px;
            transform: rotate(-45deg);
        }

        /* ===== 页面 Hero ===== */
        .page-hero {
            position: relative;
            overflow: hidden;
            padding: 158px 0 84px;
            background-image:
                linear-gradient(90deg, rgba(247, 244, 238, .94) 0%, rgba(247, 244, 238, .86) 58%, rgba(229, 236, 232, .86) 100%),
                url("/assets/images/backpic/back-1.png");
            background-size: cover;
            background-position: center;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr .96fr;
            gap: 60px;
            align-items: center;
        }

        .hero-tagline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .72);
            border: 1px solid rgba(30, 127, 104, .12);
            color: var(--primary-dark);
            border-radius: 999px;
            padding: .42rem .9rem;
            font-size: .9rem;
            font-weight: 500;
            box-shadow: var(--shadow-sm);
        }

        .hero-tagline i {
            color: var(--primary);
        }

        .hero-title {
            font-size: clamp(46px, 6vw, 76px);
            font-weight: 800;
            letter-spacing: -.03em;
            line-height: 1.05;
            color: var(--text);
            margin: 24px 0 18px;
        }

        .hero-lead {
            font-size: 1.1rem;
            color: var(--text-2);
            max-width: 560px;
            line-height: 1.9;
            margin-bottom: 0;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 13px;
            margin-top: 34px;
        }

        .hero-visual {
            position: relative;
        }

        .hero-visual-main {
            background: #fff;
            border: 1px solid rgba(30, 68, 55, .06);
            border-radius: 30px;
            padding: 12px;
            box-shadow: var(--shadow-md);
        }

        .hero-shot {
            aspect-ratio: 4 / 3;
            object-fit: cover;
            border-radius: 22px;
            width: 100%;
        }

        .hero-float-chip {
            position: absolute;
            bottom: -14px;
            left: 28px;
            background: rgba(255, 255, 255, .94);
            border-radius: 18px;
            box-shadow: var(--shadow-md);
            padding: 10px 18px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 600;
            font-size: .9rem;
            border: 1px solid rgba(255, 255, 255, .8);
            color: var(--text);
        }

        .float-dot {
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 0 4px var(--primary-soft);
        }

        /* ===== 版本时间线 ===== */
        .tl-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .timeline-card {
            position: relative;
            display: grid;
            grid-template-columns: 190px 1fr;
            gap: 26px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 22px;
            padding: 28px 30px;
            box-shadow: var(--shadow-sm);
            transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
            overflow: hidden;
        }

        .timeline-card::after {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--primary);
            border-radius: 0 4px 4px 0;
        }

        .timeline-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }

        .tl-side {
            padding-right: 24px;
            border-right: 1px solid var(--border);
        }

        .tl-version {
            font-size: 1.42rem;
            font-weight: 750;
            letter-spacing: -.02em;
            margin: 0 0 8px;
        }

        .tl-channel {
            display: inline-block;
            background: var(--primary-soft);
            color: var(--primary-dark);
            padding: 3px 11px;
            border-radius: 999px;
            font-size: .82rem;
            font-weight: 600;
        }

        .tl-channel.accent {
            background: var(--accent-soft);
            color: #8b6531;
        }

        .tl-note {
            color: var(--text-3);
            font-size: .85rem;
            margin: 12px 0 0;
        }

        .tl-main {
            color: var(--text-2);
        }

        .tl-main p {
            margin: 0 0 14px;
            color: var(--text-2);
        }

        .check-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            gap: 7px;
        }

        .check-list li {
            position: relative;
            padding-left: 26px;
            color: var(--text-2);
            line-height: 1.7;
        }

        .check-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            top: 0;
            color: var(--primary);
            font-weight: 700;
        }

        /* ===== 新版亮点 ===== */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
            padding: 48px 0;
            border-bottom: 1px solid var(--border);
        }

        .feature-row:last-child {
            border-bottom: 0;
            padding-bottom: 0;
        }

        .feature-row:first-child {
            padding-top: 0;
        }

        .feature-media-frame {
            background: #fff;
            border: 1px solid rgba(30, 68, 55, .06);
            border-radius: 28px;
            padding: 10px;
            box-shadow: var(--shadow-md);
        }

        .feature-media {
            aspect-ratio: 16 / 10;
            object-fit: cover;
            border-radius: 20px;
            width: 100%;
        }

        .feature-copy h3 {
            font-size: 1.62rem;
            font-weight: 700;
            letter-spacing: -.02em;
            margin: 0 0 14px;
            color: var(--text);
        }

        .feature-copy p {
            color: var(--text-2);
            font-size: 1.04rem;
            margin-bottom: 18px;
        }

        .feature-points {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            gap: 9px;
        }

        .feature-points li {
            position: relative;
            padding-left: 26px;
            color: var(--text-2);
        }

        .feature-points li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: 700;
        }

        /* ===== 升级流程 ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }

        .process-card {
            position: relative;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 24px;
            padding: 34px 26px 26px;
            box-shadow: var(--shadow-sm);
            height: 100%;
            transition: transform .2s var(--ease), box-shadow .2s var(--ease);
        }

        .process-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .process-num {
            font-size: 3rem;
            font-weight: 300;
            line-height: 1;
            color: rgba(30, 127, 104, .28);
            margin-bottom: 22px;
            display: block;
        }

        .process-card h3 {
            font-size: 1.12rem;
            font-weight: 700;
            margin: 0 0 10px;
            color: var(--text);
        }

        .process-card p {
            color: var(--text-2);
            font-size: .95rem;
            margin: 0;
        }

        /* ===== 兼容与环境 ===== */
        .compat-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 24px;
            padding: 30px 36px;
            box-shadow: var(--shadow-sm);
        }

        .compat-row {
            display: flex;
            align-items: flex-start;
            gap: 26px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
        }

        .compat-row:last-child {
            border-bottom: 0;
            padding-bottom: 0;
        }

        .compat-icon {
            flex: 0 0 auto;
            width: 40px;
            height: 40px;
            border-radius: 13px;
            background: var(--primary-soft);
            color: var(--primary);
            display: inline-flex;
            justify-content: center;
            align-items: center;
            font-size: 1rem;
        }

        .compat-label {
            font-weight: 600;
            color: var(--text);
            margin-bottom: 3px;
        }

        .compat-desc {
            color: var(--text-2);
            font-size: .95rem;
        }

        .compat-desc strong {
            color: var(--text);
        }

        /* ===== FAQ ===== */
        .faq-limited {
            max-width: 880px;
            margin: 0 auto;
        }

        .accordion.custom-faq {
            --bs-accordion-border-width: 0;
            --bs-accordion-btn-focus-box-shadow: none;
            --bs-accordion-active-bg: transparent;
            --bs-accordion-active-color: var(--primary);
        }

        .accordion.custom-faq .accordion-item {
            border: 0;
            border-bottom: 1px solid var(--border);
            background: transparent;
            border-radius: 0 !important;
        }

        .accordion.custom-faq .accordion-button {
            background: transparent;
            box-shadow: none;
            padding: 1.25rem .4rem;
            font-weight: 600;
            font-size: 1.04rem;
            color: var(--text);
            border-radius: 0 !important;
        }

        .accordion.custom-faq .accordion-button:not(.collapsed) {
            color: var(--primary);
        }

        .accordion.custom-faq .accordion-button::after {
            background: none;
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            content: "\f067";
            color: var(--primary);
            width: auto;
            height: auto;
            font-size: .95rem;
            transition: transform .25s var(--ease);
        }

        .accordion.custom-faq .accordion-button:not(.collapsed)::after {
            background: none;
            content: "\f068";
            transform: none;
        }

        .accordion.custom-faq .accordion-body {
            color: var(--text-2);
            padding: .2rem .4rem 1.35rem;
            font-size: .98rem;
        }

        /* ===== 相关栏目 ===== */
        .resource-card {
            height: 100%;
            display: flex;
            flex-direction: column;
            position: relative;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 24px;
            padding: 30px;
            box-shadow: var(--shadow-sm);
            transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
        }

        .resource-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(30, 127, 104, .28);
            color: var(--text);
        }

        .resource-index {
            font-size: .84rem;
            font-weight: 600;
            letter-spacing: .12em;
            color: var(--accent);
            margin-bottom: 22px;
        }

        .resource-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 10px;
        }

        .resource-card p {
            color: var(--text-2);
            font-size: .95rem;
            flex: 1 1 auto;
            margin-bottom: 20px;
        }

        .resource-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 600;
            font-size: .93rem;
        }

        .resource-link i {
            transition: transform .2s var(--ease);
        }

        .resource-card:hover .resource-link i {
            transform: translateX(4px);
        }

        /* ===== 收尾 CTA ===== */
        .cta-box {
            position: relative;
            padding: 58px;
            border-radius: 32px;
            background-color: #1e4a3d;
            background-image:
                linear-gradient(120deg, rgba(27, 76, 63, .94), rgba(25, 64, 54, .92)),
                url("/assets/images/backpic/back-3.webp");
            background-size: cover;
            background-position: center;
            color: #fff;
            overflow: hidden;
        }

        .cta-box h2 {
            color: #fff;
            font-size: clamp(26px, 3vw, 38px);
            font-weight: 700;
            letter-spacing: -.02em;
            line-height: 1.22;
            margin: 0 0 14px;
        }

        .cta-box p {
            color: rgba(255, 255, 255, .82);
            font-size: 1.02rem;
            max-width: 660px;
            margin-bottom: 30px;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #202f28;
            color: #aabcb3;
            padding: 62px 0 26px;
            margin-top: 76px;
            border-radius: 0;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #ffffff;
            font-weight: 700;
            font-size: 1.18rem;
            margin-bottom: 14px;
        }

        .footer-logo {
            width: 38px;
            height: 38px;
            border-radius: 13px;
            background: var(--primary);
            display: inline-flex;
            justify-content: center;
            align-items: center;
        }

        .footer-logo svg {
            width: 20px;
            height: 20px;
        }

        .footer-about {
            color: #9db0a7;
            font-size: .96rem;
            max-width: 420px;
            margin: 0;
        }

        .footer-title {
            color: #fff;
            font-size: .92rem;
            font-weight: 600;
            letter-spacing: .06em;
            margin-bottom: 18px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li+li {
            margin-top: 9px;
        }

        .footer-links a {
            color: #9db0a7;
            font-size: .95rem;
            position: relative;
        }

        .footer-links a:hover {
            color: #fff;
        }

        .footer-legal {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 10px 24px;
            border-top: 1px solid rgba(255, 255, 255, .12);
            margin-top: 48px;
            padding-top: 22px;
            color: #7d968b;
            font-size: .84rem;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1199.98px) {
            .navbar-download-btn {
                display: none !important;
            }
        }

        @media (max-width: 991.98px) {
            .glass-navbar {
                border-radius: 28px;
                padding: 10px 16px;
            }
            .navbar-collapse {
                background: rgba(249, 248, 244, .96);
                -webkit-backdrop-filter: blur(18px);
                backdrop-filter: blur(18px);
                border: 1px solid var(--border);
                border-radius: 22px;
                padding: 10px;
                margin-top: 12px;
                box-shadow: var(--shadow-md);
            }
            .nav-link {
                padding: .78rem 1rem;
            }
            .nav-link.active::before {
                margin-right: 9px;
            }
            .page-hero {
                padding: 132px 0 64px;
            }
            .hero-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 767.98px) {
            .section {
                padding: 64px 0;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 42px;
            }
            .page-hero {
                padding: 120px 0 56px;
            }
            .hero-title {
                font-size: clamp(42px, 14vw, 58px);
            }
            .feature-row {
                grid-template-columns: 1fr;
                gap: 30px;
                padding: 38px 0;
            }
            .feature-copy h3 {
                font-size: 1.42rem;
            }
            .feature-media-frame {
                order: -1;
            }
            .timeline-card {
                grid-template-columns: 1fr;
                padding: 24px;
            }
            .tl-side {
                border-right: 0;
                padding-right: 0;
                border-bottom: 1px solid var(--border);
                padding-bottom: 16px;
                margin-bottom: 6px;
            }
            .compat-card {
                padding: 24px;
            }
            .compat-row {
                flex-direction: column;
                gap: 12px;
                padding: 18px 0;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-legal {
                flex-direction: column;
                margin-top: 36px;
            }
            .cta-box {
                padding: 38px 28px;
            }
        }

        @media (max-width: 575.98px) {
            .site-header {
                padding: 10px 10px 0;
            }
            .navbar-brand {
                font-size: 1rem;
            }
            .brand-mark {
                width: 34px;
                height: 34px;
                border-radius: 12px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .hero-float-chip {
                left: 18px;
                bottom: -12px;
                padding: 8px 13px;
                font-size: .84rem;
            }
            .section-head h2 {
                font-size: 1.72rem;
            }
            .tl-version {
                font-size: 1.28rem;
            }
            .resource-card {
                padding: 24px;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .cta-box p {
                font-size: .95rem;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #0f6a5c;
            --primary-dark: #0a4d43;
            --primary-soft: rgba(15, 106, 92, 0.1);
            --accent: #b98950;
            --accent-soft: #f4ead9;
            --bg: #f7f5f1;
            --surface: #fffdfa;
            --surface-soft: #f0ede7;
            --text: #222823;
            --text-soft: #5e6b65;
            --muted: #8a958f;
            --border: rgba(30, 40, 36, 0.1);
            --radius-s: 8px;
            --radius-m: 16px;
            --radius-l: 24px;
            --shadow-sm: 0 1px 2px rgba(20, 35, 30, 0.04), 0 8px 24px rgba(20, 35, 30, 0.04);
            --shadow-md: 0 2px 4px rgba(20, 35, 30, 0.05), 0 16px 36px rgba(20, 35, 30, 0.08);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg);
            color: var(--text);
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin-top: 0;
            color: var(--text);
            line-height: 1.3;
            font-weight: 700;
        }

        p {
            margin-top: 0;
        }

        ul,
        ol {
            margin: 0;
            padding: 0;
        }

        img {
            max-width: 100%;
            height: auto;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
        }

        a:hover {
            color: var(--primary-dark);
        }

        button,
        input {
            font-family: inherit;
        }

        .btn {
            border-radius: 999px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.72rem 1.5rem;
            border-width: 1px;
            border-style: solid;
            transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
        }

        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            box-shadow: none;
        }

        .btn-primary {
            --bs-btn-bg: var(--primary);
            --bs-btn-border-color: var(--primary);
            --bs-btn-hover-bg: var(--primary-dark);
            --bs-btn-hover-border-color: var(--primary-dark);
            --bs-btn-active-bg: var(--primary-dark);
            --bs-btn-active-border-color: var(--primary-dark);
            --bs-btn-disabled-bg: var(--primary);
            --bs-btn-disabled-border-color: var(--primary);
            background-color: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 6px 16px rgba(15, 106, 92, 0.18);
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-soft {
            background: var(--primary-soft);
            border-color: rgba(15, 106, 92, 0.12);
            color: var(--primary);
        }

        .btn-soft:hover {
            background: rgba(15, 106, 92, 0.16);
            border-color: rgba(15, 106, 92, 0.24);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }

        .btn-outline-light {
            --bs-btn-color: #fff;
            --bs-btn-hover-bg: rgba(255, 255, 255, 0.14);
            --bs-btn-active-bg: rgba(255, 255, 255, 0.2);
            --bs-btn-border-color: rgba(255, 255, 255, 0.7);
            --bs-btn-hover-border-color: #fff;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.7);
        }

        .btn-outline-light:hover {
            color: #fff;
            transform: translateY(-1px);
        }

        .btn-light {
            --bs-btn-bg: #fff;
            --bs-btn-border-color: #fff;
            --bs-btn-hover-bg: #f4f1eb;
            --bs-btn-hover-border-color: #f4f1eb;
            background-color: #fff;
            border-color: #fff;
            color: var(--primary);
        }

        .btn-light:hover {
            color: var(--primary-dark);
            transform: translateY(-1px);
        }

        .container {
            max-width: 1240px;
        }

        .section {
            padding: 96px 0;
        }

        @media (max-width: 991px) {
            .section {
                padding: 68px 0;
            }
        }

        @media (max-width: 575px) {
            .section {
                padding: 54px 0;
            }
        }

        .section-heading {
            max-width: 760px;
            margin-bottom: 48px;
        }

        .section-heading.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border-radius: 999px;
            padding: 0.34rem 1rem;
            background: var(--primary-soft);
            border: 1px solid rgba(15, 106, 92, 0.1);
            color: var(--primary);
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: clamp(1.9rem, 3vw, 2.6rem);
            letter-spacing: -0.02em;
            margin: 0 0 18px;
        }

        .section-copy {
            color: var(--text-soft);
            font-size: 1rem;
            margin-bottom: 0;
        }

        .section-title+.section-copy {
            margin-top: -8px;
        }

        /* 悬浮导航 */
        .site-header {
            position: sticky;
            top: 12px;
            z-index: 1050;
            padding: 0 18px;
            margin-bottom: 12px;
        }

        .glass-navbar {
            border-radius: 999px;
            max-width: 1260px;
            margin: 0 auto;
            background: rgba(255, 253, 249, 0.8);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid rgba(255, 255, 255, 0.72);
            box-shadow: 0 1px 2px rgba(20, 35, 30, 0.05), 0 12px 32px rgba(20, 35, 30, 0.08);
            padding: 10px 24px;
        }

        .navbar-brand {
            display: inline-flex;
            align-items: center;
            color: var(--text);
            font-weight: 700;
            font-size: 1.04rem;
            letter-spacing: 0.01em;
            gap: 11px;
            margin-right: 28px;
        }

        .navbar-brand:hover {
            color: var(--text);
        }

        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            flex: 0 0 auto;
        }

        .brand-mark svg {
            width: 18px;
            height: 18px;
        }

        .glass-navbar .btn,
        .glass-navbar .nav-link {
            font-size: 0.92rem;
        }

        .glass-navbar .navbar-toggler {
            border: 0;
            box-shadow: none;
            padding: 8px 6px;
            border-radius: 12px;
        }

        .glass-navbar .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(15, 106, 92, 0.15);
        }

        .burger-lines {
            display: inline-flex;
            flex-direction: column;
            justify-content: space-between;
            width: 22px;
            height: 17px;
        }

        .burger-lines span {
            display: block;
            height: 2px;
            width: 100%;
            border-radius: 2px;
            background: var(--text);
            transition: transform 0.2s ease, opacity 0.2s ease;
        }

        .navbar-collapse {
            justify-content: flex-end;
        }

        .navbar-nav {
            gap: 0.15rem;
        }

        .glass-navbar .nav-link {
            border-radius: 999px;
            color: var(--text-soft);
            font-weight: 600;
            padding: 0.55rem 1.15rem;
            background: transparent;
            position: relative;
        }

        .glass-navbar .nav-link:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .glass-navbar .nav-link.active {
            background: var(--primary);
            color: #fff;
        }

        .glass-navbar .navbar-download-btn {
            padding: 0.52rem 1.3rem;
            margin-left: 0.5rem;
            white-space: nowrap;
        }

        @media (max-width: 1199.98px) {
            .navbar-nav {
                gap: 0;
            }

            .glass-navbar .nav-link {
                padding: 0.55rem 0.85rem;
                font-size: 0.88rem;
            }
        }

        @media (max-width: 991.98px) {
            .site-header {
                padding-left: 14px;
                padding-right: 14px;
            }

            .glass-navbar {
                border-radius: 28px;
                padding: 12px 18px;
            }

            .navbar-collapse {
                background: rgba(255, 253, 249, 0.96);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                border: 1px solid var(--border);
                border-radius: 22px;
                margin-top: 12px;
                padding: 16px 10px;
                box-shadow: var(--shadow-md);
            }

            .navbar-nav {
                gap: 4px;
                text-align: center;
            }

            .glass-navbar .nav-link {
                padding: 0.72rem 1rem;
            }

            .navbar-download-btn {
                display: inline-flex;
                margin-left: 0 !important;
                margin-top: 8px;
                justify-content: center;
            }
        }

        @media (max-width: 575px) {
            .glass-navbar {
                border-radius: 24px;
                padding: 10px 15px;
            }

            .navbar-brand {
                font-size: 0.96rem;
                gap: 8px;
            }

            .brand-mark {
                width: 32px;
                height: 32px;
            }

            .brand-mark svg {
                width: 16px;
                height: 16px;
            }
        }

        /* 分类页首屏 */
        .category-hero {
            position: relative;
            padding: 72px 0 76px;
            background:
                linear-gradient(115deg, rgba(247, 245, 241, 0.97) 0%, rgba(255, 253, 249, 0.88) 62%, rgba(247, 245, 241, 0.78) 100%),
                url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
            border-bottom: 1px solid var(--border);
        }

        @media (max-width: 767px) {
            .category-hero {
                padding: 50px 0 56px;
            }
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 52px;
            align-items: center;
        }

        @media (max-width: 991px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }

        .breadcrumb-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.86rem;
            color: var(--muted);
            margin-bottom: 22px;
        }

        .breadcrumb-wrap a {
            color: var(--muted);
            font-weight: 500;
        }

        .breadcrumb-wrap a:hover {
            color: var(--primary);
        }

        .breadcrumb-wrap .bc-sep {
            color: rgba(0, 0, 0, 0.25);
        }

        .hero-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-soft);
            color: var(--primary);
            border-radius: 999px;
            font-size: 0.84rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            padding: 0.4rem 1rem;
            margin-bottom: 20px;
        }

        .category-hero h1 {
            font-size: clamp(2.6rem, 5vw, 4.2rem);
            font-weight: 800;
            letter-spacing: -0.03em;
            line-height: 1.08;
            margin: 0 0 22px;
        }

        .hero-lead {
            max-width: 58ch;
            font-size: 1.08rem;
            line-height: 1.85;
            color: var(--text-soft);
            margin-bottom: 28px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .hero-side {
            display: flex;
            justify-content: flex-end;
        }

        .side-card {
            width: 100%;
            max-width: 440px;
            background: rgba(255, 253, 249, 0.88);
            border: 1px solid rgba(255, 255, 255, 0.85);
            border-radius: var(--radius-l);
            padding: 28px;
            box-shadow: var(--shadow-md);
        }

        .side-card-title {
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 18px;
            color: var(--text);
        }

        .side-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 6px;
            margin: 0;
        }

        .side-list li {
            border-radius: 14px;
            background: rgba(15, 106, 92, 0.06);
            border: 1px solid rgba(15, 106, 92, 0.06);
            transition: background 0.2s ease, border-color 0.2s ease;
        }

        .side-list li:hover {
            background: rgba(15, 106, 92, 0.1);
            border-color: rgba(15, 106, 92, 0.12);
        }

        .side-list a {
            display: block;
            padding: 14px 16px;
            color: var(--text);
            font-weight: 600;
            font-size: 0.92rem;
        }

        .side-list a small {
            display: block;
            color: var(--muted);
            font-weight: 500;
            margin-top: 3px;
            font-size: 0.8rem;
        }

        /* 分类卡片 */
        .topic-card-section {
            background: var(--surface);
        }

        .topic-card {
            display: block;
            height: 100%;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 26px 22px;
            transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
            color: var(--text);
            position: relative;
        }

        .topic-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(15, 106, 92, 0.2);
            color: var(--text);
        }

        .topic-index {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--accent-soft);
            color: var(--accent);
            font-size: 0.82rem;
            font-weight: 800;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
        }

        .topic-card h3 {
            font-size: 1.1rem;
            margin-bottom: 10px;
        }

        .topic-card p {
            color: var(--text-soft);
            font-size: 0.92rem;
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .topic-link-text {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-size: 0.9rem;
            font-weight: 700;
            border-bottom: 1px solid transparent;
        }

        .topic-card:hover .topic-link-text {
            border-bottom-color: rgba(15, 106, 92, 0.3);
        }

        /* FAQ 搜索与折叠 */
        .faq-list-section {
            background: var(--surface-soft);
        }

        .faq-list-inner {
            max-width: 940px;
            margin-left: auto;
            margin-right: auto;
        }

        .faq-search-wrap {
            position: relative;
            max-width: 720px;
            margin: 0 auto 44px;
        }

        .faq-search-wrap label {
            position: absolute;
            left: 22px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--muted);
            display: inline-flex;
            align-items: center;
        }

        .faq-search-wrap label svg {
            width: 18px;
            height: 18px;
        }

        .faq-search-input {
            width: 100%;
            border: 1px solid transparent;
            background: #fff;
            border-radius: 999px;
            padding: 15px 22px 15px 52px;
            font-size: 0.96rem;
            color: var(--text);
            box-shadow: var(--shadow-sm);
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .faq-search-input:focus {
            outline: none;
            border-color: rgba(15, 106, 92, 0.5);
            box-shadow: 0 0 0 4px rgba(15, 106, 92, 0.1);
        }

        .faq-search-input::placeholder {
            color: var(--muted);
        }

        .visually-hidden {
            position: absolute !important;
            width: 1px !important;
            height: 1px !important;
            padding: 0 !important;
            margin: -1px !important;
            overflow: hidden !important;
            clip: rect(0, 0, 0, 0) !important;
            white-space: nowrap !important;
            border: 0 !important;
        }

        .faq-group {
            margin-bottom: 42px;
        }

        .faq-group:last-child {
            margin-bottom: 0;
        }

        .faq-group-heading {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.22rem;
            padding-bottom: 12px;
            margin-bottom: 4px;
            border-bottom: 2px solid rgba(15, 106, 92, 0.14);
            scroll-margin-top: 120px;
        }

        .faq-group-num {
            color: var(--primary);
            font-size: 0.82rem;
            font-weight: 800;
            letter-spacing: 0.08em;
            background: rgba(15, 106, 92, 0.08);
            border-radius: 999px;
            padding: 4px 11px;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 16px;
            margin-top: 14px;
            overflow: hidden;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .faq-item:has(.faq-toggle[aria-expanded="true"]) {
            border-color: rgba(15, 106, 92, 0.18);
            box-shadow: var(--shadow-sm);
        }

        .faq-question-line {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 0 22px;
        }

        .faq-qmark {
            flex: 0 0 auto;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-soft);
            color: var(--primary);
            font-size: 0.86rem;
            font-weight: 700;
            transform: translateY(19px);
        }

        .faq-toggle {
            flex: 1 1 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
            border: 0;
            background: transparent;
            color: var(--text);
            font-size: 1rem;
            font-weight: 600;
            text-align: left;
            padding: 19px 0;
            cursor: pointer;
        }

        .faq-toggle:hover {
            color: var(--primary);
        }

        .faq-icon {
            flex: 0 0 auto;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: rgba(15, 106, 92, 0.08);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 400;
            line-height: 1;
            transition: transform 0.25s ease, background 0.2s ease;
        }

        .faq-icon::before {
            content: "+";
            transform: translateY(-1px);
        }

        .faq-toggle[aria-expanded="true"] .faq-icon::before {
            content: "−";
        }

        .faq-answer {
            padding: 2px 22px 24px 64px;
            color: var(--text-soft);
            font-size: 0.96rem;
            line-height: 1.85;
            border-top: 1px dashed rgba(30, 40, 36, 0.08);
        }

        .faq-answer p {
            margin: 0;
            padding-top: 16px;
        }

        @media (max-width: 575px) {
            .faq-question-line {
                padding: 0 16px;
                gap: 9px;
            }

            .faq-qmark {
                width: 24px;
                height: 24px;
                font-size: 0.76rem;
                transform: translateY(18px);
            }

            .faq-toggle {
                font-size: 0.94rem;
                padding: 16px 0;
                gap: 12px;
            }

            .faq-answer {
                padding: 0 16px 18px 42px;
            }
        }

        /* 图片与排查流程 */
        .diagnosis-section {
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .visual-cover {
            border-radius: 24px;
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
            background: #e8e4dc;
            margin: 0;
        }

        .visual-cover img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            display: block;
        }

        .check-list {
            list-style: none;
            display: grid;
            gap: 26px;
            margin: 30px 0 32px;
            padding: 0;
        }

        .check-list li {
            position: relative;
            padding-left: 48px;
        }

        .check-list li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 1px;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary-soft);
            border: 1px solid rgba(15, 106, 92, 0.18);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            font-weight: 800;
            color: var(--primary);
        }

        .check-list li:nth-child(1)::before {
            content: "1";
        }

        .check-list li:nth-child(2)::before {
            content: "2";
        }

        .check-list li:nth-child(3)::before {
            content: "3";
        }

        .check-list strong {
            display: block;
            font-size: 1rem;
            margin-bottom: 5px;
        }

        .check-list p {
            color: var(--text-soft);
            font-size: 0.94rem;
            margin: 0;
        }

        /* 交叉入口 */
        .cross-section {
            background: var(--bg);
        }

        .cross-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 30px 24px;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
        }

        .cross-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(15, 106, 92, 0.2);
        }

        .card-tag {
            display: inline-block;
            align-self: flex-start;
            background: var(--accent-soft);
            color: #8a6437;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 700;
            padding: 4px 12px;
            margin-bottom: 18px;
        }

        .cross-card h3 {
            font-size: 1.14rem;
            margin-bottom: 10px;
        }

        .cross-card p {
            color: var(--text-soft);
            font-size: 0.94rem;
            margin-bottom: 20px;
            flex: 1 1 auto;
        }

        .cross-card .cross-more {
            color: var(--primary);
            font-weight: 700;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .cross-card:hover .cross-more {
            color: var(--primary-dark);
        }

        /* 底部 CTA */
        .bottom-cta-section {
            padding: 90px 0;
            background: var(--bg);
        }

        @media (max-width: 767px) {
            .bottom-cta-section {
                padding: 56px 0;
            }
        }

        .cta-card {
            position: relative;
            overflow: hidden;
            border-radius: 32px;
            background: linear-gradient(130deg, #123b35 0%, #0f6a5c 72%, #178573 100%);
            color: #fff;
            padding: 64px;
            box-shadow: 0 20px 50px rgba(15, 70, 60, 0.2);
        }

        .cta-card::before {
            content: "";
            position: absolute;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            top: -130px;
            right: -80px;
            background: rgba(255, 255, 255, 0.06);
        }

        .cta-card::after {
            content: "";
            position: absolute;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            left: 12%;
            bottom: -100px;
            background: rgba(255, 255, 255, 0.04);
        }

        .cta-card .cta-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }

        .cta-eyebrow {
            display: inline-block;
            font-size: 0.84rem;
            font-weight: 700;
            letter-spacing: 0.12em;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 5px 16px;
            margin-bottom: 20px;
            background: rgba(255, 255, 255, 0.08);
        }

        .cta-card h2 {
            color: #fff;
            font-size: clamp(1.8rem, 3vw, 2.6rem);
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }

        .cta-card .cta-copy {
            color: rgba(255, 255, 255, 0.88);
            font-size: 1rem;
            max-width: 46rem;
            margin-bottom: 34px;
        }

        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .cta-note {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.55);
            margin-top: 22px;
            margin-bottom: 0;
        }

        @media (max-width: 767px) {
            .cta-card {
                padding: 38px 30px;
                border-radius: 24px;
            }

            .cta-buttons .btn {
                width: 100%;
            }
        }

        /* 页脚 */
        .site-footer {
            background: #102b26;
            color: rgba(255, 255, 255, 0.7);
            padding: 66px 0 32px;
        }

        .site-footer a {
            color: rgba(255, 255, 255, 0.7);
        }

        .site-footer a:hover {
            color: #fff;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.5fr 0.8fr 0.9fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            color: #fff;
            font-size: 1.15rem;
            font-weight: 700;
        }

        .footer-logo {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.12);
        }

        .footer-logo svg {
            width: 16px;
            height: 16px;
        }

        .footer-about {
            margin-top: 16px;
            max-width: 36rem;
            font-size: 0.94rem;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-title {
            color: #fff;
            font-weight: 700;
            margin-bottom: 16px;
            font-size: 1rem;
        }

        .footer-links {
            list-style: none;
            display: grid;
            gap: 10px;
            margin: 0;
        }

        .footer-links a {
            font-size: 0.9rem;
            transition: padding-left 0.2s ease, color 0.2s ease;
        }

        .footer-links a:hover {
            padding-left: 4px;
        }

        .footer-legal {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            font-size: 0.84rem;
            color: rgba(255, 255, 255, 0.45);
        }

        @media (max-width: 991px) {
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 34px;
            }

            .footer-top>div:first-child {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 575px) {
            .footer-top {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-legal {
                align-items: flex-start;
            }
        }