/* roulang page: index */
:root {
            --brand: #C9A063;
            --brand-dark: #A77E45;
            --ink: #1F2621;
            --paper: #FAF7F2;
            --muted: #F2EFE9;
            --accent: #B5543C;
        }
        html { scroll-behavior: smooth; }
        body { font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif; background: var(--paper); color: var(--ink); line-height: 1.6; }
        h1, h2, h3, h4 { font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif; }
        .font-serif-cn { font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif; }
        .container-x { max-width: 1280px; margin: 0 auto; padding-left: 1rem; padding-right: 1rem; }
        @media (min-width: 640px) { .container-x { padding-left: 1.5rem; padding-right: 1.5rem; } }
        @media (min-width: 1024px) { .container-x { padding-left: 2rem; padding-right: 2rem; } }
        .hero-bg { background-image: url('/assets/images/backpic/back-1.png'); background-size: cover; background-position: center; }
        .section-fade { background: linear-gradient(180deg, var(--paper) 0%, var(--muted) 100%); }
        .btn-gold { background: var(--brand); color: var(--ink); border-radius: 0.5rem; font-weight: 600; transition: all 0.3s ease; }
        .btn-gold:hover { background: var(--brand-dark); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(201, 160, 99, 0.3); }
        .btn-gold:focus { outline: none; box-shadow: 0 0 0 3px rgba(201, 160, 99, 0.4); }
        .btn-gold:active { transform: scale(0.98); }
        .btn-outline { border: 1px solid var(--ink); color: var(--ink); border-radius: 0.5rem; font-weight: 500; transition: all 0.3s ease; }
        .btn-outline:hover { background: rgba(31, 38, 33, 0.05); border-color: var(--brand-dark); color: var(--brand-dark); }
        .btn-outline:focus { outline: none; box-shadow: 0 0 0 3px rgba(201, 160, 99, 0.3); }
        .btn-outline:active { transform: scale(0.98); }
        .card-hover { transition: all 0.3s ease; box-shadow: 0 8px 30px rgba(31, 40, 35, 0.08); }
        .card-hover:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(31, 40, 35, 0.14); }
        .nav-link { position: relative; transition: color 0.2s; }
        .nav-link::after { content: ''; position: absolute; left: 0; bottom: -4px; width: 0; height: 2px; background: var(--brand); transition: width 0.3s; }
        .nav-link:hover::after, .nav-link.active::after { width: 100%; }
        .nav-link.active { color: var(--brand-dark); }
        .form-input { width: 100%; border: 1px solid rgba(0, 0, 0, 0.1); border-radius: 0.5rem; padding: 0.75rem 1rem; background: #fff; transition: all 0.3s; }
        .form-input:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px rgba(201, 160, 99, 0.15); }
        .faq-item { border: 1px solid rgba(0, 0, 0, 0.06); border-radius: 0.75rem; background: #fff; }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
        .faq-item.active .faq-answer { max-height: 300px; }
        .faq-toggle { transition: transform 0.3s; }
        .faq-item.active .faq-toggle { transform: rotate(45deg); }
        .float-cta { position: fixed; right: 1.5rem; bottom: 1.5rem; z-index: 50; display: flex; align-items: center; gap: 0.5rem; background: var(--brand); color: var(--ink); padding: 0.75rem 1.25rem; border-radius: 999px; box-shadow: 0 12px 32px rgba(31, 40, 35, 0.2); transition: all 0.3s; }
        .float-cta:hover { background: var(--brand-dark); transform: translateY(-2px); box-shadow: 0 16px 36px rgba(31, 40, 35, 0.25); }
        .back-top { position: fixed; right: 1.5rem; bottom: 5.5rem; z-index: 50; width: 44px; height: 44px; border-radius: 999px; background: var(--ink); color: #fff; display: flex; align-items: center; justify-content: center; box-shadow: 0 8px 24px rgba(31, 40, 35, 0.2); transition: all 0.3s; }
        .back-top:hover { background: var(--brand-dark); color: #fff; }
        section[id] { scroll-margin-top: 80px; }
        .mobile-menu { display: none; }
        @media (max-width: 1023px) {
            .desktop-nav { display: none; }
            .mobile-menu-toggle { display: block; }
            .mobile-menu.open { display: block; }
        }
        @media (min-width: 1024px) {
            .mobile-menu-toggle { display: none; }
        }
        .timeline-number { font-size: 3.5rem; font-weight: 700; font-family: "Noto Serif SC", serif; color: var(--brand); opacity: 0.25; }
        .badge-placeholder { border: 1px dashed rgba(255, 255, 255, 0.2); border-radius: 0.75rem; display: inline-flex; align-items: center; justify-content: center; padding: 0.75rem 1.5rem; }
        .line-clamp-2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .line-clamp-3 { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
        @media (max-width: 520px) {
            .float-cta span { display: inline-block; font-size: 0.875rem; }
            .back-top { right: 1rem; bottom: 5rem; }
            .float-cta { right: 1rem; bottom: 1rem; padding: 0.65rem 1rem; }
        }

/* roulang page: category1 */
:root {
            --brand: #C9A063;
            --brand-dark: #A77E45;
            --ink: #1F2621;
            --paper: #FAF7F2;
            --muted: #F2EFE9;
            --accent: #B5543C;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--paper);
            color: var(--ink);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            line-height: 1.6;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button {
            cursor: pointer;
        }

        .container-x {
            max-width: 80rem;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        @media (min-width: 640px) {
            .container-x {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }

        @media (min-width: 1024px) {
            .container-x {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        .font-serif-cn {
            font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
        }

        .btn-gold {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--brand);
            color: var(--ink);
            border-radius: 0.5rem;
            font-weight: 500;
            border: none;
            transition: background 0.2s ease, color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
            box-shadow: 0 4px 14px rgba(201, 160, 99, 0.25);
            cursor: pointer;
        }

        .btn-gold:hover {
            background: var(--brand-dark);
            color: #fff;
            box-shadow: 0 6px 20px rgba(167, 126, 69, 0.32);
        }

        .btn-gold:focus {
            outline: 2px solid var(--brand);
            outline-offset: 2px;
        }

        .btn-gold:active {
            transform: scale(0.98);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1.5px solid var(--ink);
            color: var(--ink);
            border-radius: 0.5rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s, border-color 0.2s;
        }

        .btn-outline:hover {
            background: #fff;
            border-color: var(--ink);
            box-shadow: 0 4px 12px rgba(31, 40, 35, 0.08);
        }

        .btn-outline:active {
            transform: scale(0.98);
        }

        .nav-link {
            position: relative;
            padding-bottom: 4px;
            transition: color 0.2s ease;
        }

        .nav-link.active {
            color: var(--brand-dark) !important;
            border-bottom: 2px solid var(--brand);
            padding-bottom: 3px;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--brand);
            border-radius: 2px;
            transition: width 0.25s ease;
        }

        .nav-link:not(.active):hover::after {
            width: 100%;
        }

        .card-hover {
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }

        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 40px rgba(31, 40, 35, 0.12);
            border-color: rgba(201, 160, 99, 0.25);
        }

        .input-style {
            width: 100%;
            background: #fff;
            border: 1px solid rgba(0, 0, 0, 0.08);
            border-radius: 0.5rem;
            padding: 0.625rem 1rem;
            font-size: 0.875rem;
            color: var(--ink);
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            min-height: 44px;
        }

        .input-style::placeholder {
            color: #9CA3AF;
        }

        .input-style:focus {
            outline: none;
            border-color: var(--brand);
            box-shadow: 0 0 0 3px rgba(201, 160, 99, 0.2);
        }

        .badge-gold {
            background: rgba(201, 160, 99, 0.15);
            color: var(--brand-dark);
            border: 1px solid rgba(201, 160, 99, 0.3);
        }

        .stat-number {
            font-family: "Noto Serif SC", "Songti SC", serif;
            font-weight: 700;
            color: var(--brand);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 320px;
            padding-top: 0.75rem;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--brand);
            color: var(--ink);
            border-color: var(--brand);
        }

        .faq-icon {
            transition: transform 0.3s ease, background 0.3s ease, border-color 0.3s, color 0.3s;
        }

        .mobile-menu {
            display: none;
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu-toggle {
            display: flex;
        }

        @media (min-width: 1024px) {
            .mobile-menu-toggle {
                display: none;
            }

            .mobile-menu {
                display: none !important;
            }

            .desktop-nav {
                display: flex;
            }
        }

        @media (max-width: 1023.98px) {
            .desktop-nav {
                display: none;
            }
        }

        section[id] {
            scroll-margin-top: 80px;
        }

        .section-vertical-pad {
            padding-top: 4rem;
            padding-bottom: 4rem;
        }

        @media (min-width: 768px) {
            .section-vertical-pad {
                padding-top: 6rem;
                padding-bottom: 6rem;
            }
        }

/* roulang page: article */
:root {
    --brand: #C9A063;
    --brand-dark: #A77E45;
    --ink: #1F2621;
    --paper: #FAF7F2;
    --muted: #F2EFE9;
    --accent: #B5543C;
    --text-soft: #6B7280;
    --text-body: #3D423D;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
    background: var(--paper);
    color: var(--ink);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: color .2s ease; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; }

.font-serif-cn {
    font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
}

.container-x {
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1rem;
    padding-right: 1rem;
}
@media (min-width: 640px) {
    .container-x { padding-left: 1.5rem; padding-right: 1.5rem; }
}
@media (min-width: 1024px) {
    .container-x { padding-left: 2rem; padding-right: 2rem; }
}

.btn-gold {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    background: var(--brand);
    color: #1F2621;
    font-weight: 600;
    font-size: 0.9375rem;
    border-radius: 0.5rem;
    padding: 0.625rem 1.5rem;
    border: 1px solid transparent;
    transition: all .2s ease;
    box-shadow: 0 4px 16px rgba(201,160,99,0.25);
}
.btn-gold:hover {
    background: var(--brand-dark);
    color: #fff;
    border-color: var(--brand-dark);
    box-shadow: 0 6px 20px rgba(167,126,69,0.3);
    transform: translateY(-1px);
}
.btn-gold:focus {
    outline: none;
    box-shadow: 0 0 0 4px rgba(201,160,99,0.35);
}
.btn-gold:active { transform: scale(0.98); }

.btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    border: 1px solid var(--ink);
    color: var(--ink);
    font-weight: 500;
    font-size: 0.9375rem;
    border-radius: 0.5rem;
    padding: 0.625rem 1.5rem;
    background: transparent;
    transition: all .2s ease;
}
.btn-outline:hover {
    background: rgba(31,38,33,0.05);
    border-color: var(--brand-dark);
    color: var(--brand-dark);
}
.btn-outline:focus {
    outline: none;
    box-shadow: 0 0 0 4px rgba(31,38,33,0.12);
}
.btn-outline:active { transform: scale(0.98); }

.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    border: 1px solid rgba(255,255,255,0.5);
    color: #fff;
    font-weight: 500;
    font-size: 0.9375rem;
    border-radius: 0.5rem;
    padding: 0.625rem 1.5rem;
    background: rgba(31,38,33,0.3);
    backdrop-filter: blur(4px);
    transition: all .2s ease;
}
.btn-ghost:hover {
    background: rgba(255,255,255,0.12);
    border-color: var(--brand);
    color: var(--brand);
}
.btn-ghost:focus {
    outline: none;
    box-shadow: 0 0 0 4px rgba(201,160,99,0.3);
}
.btn-ghost:active { transform: scale(0.98); }

.nav-link {
    position: relative;
    padding: 0.25rem 0;
    font-weight: 500;
    transition: color .2s ease;
}
.nav-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0;
    height: 2px;
    background: var(--brand);
    border-radius: 2px;
    transition: width .3s ease;
}
.nav-link:hover { color: var(--brand-dark); }
.nav-link.active { color: var(--brand-dark); }
.nav-link.active::after { width: 100%; }

.mobile-menu { display: none; }

.breadcrumb a:hover { color: var(--brand-dark); }

.article-content {
    font-size: 1.0625rem;
    line-height: 1.9;
    color: var(--text-body);
}
.article-content h2 {
    font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--ink);
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    line-height: 1.4;
}
.article-content h3 {
    font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--ink);
    margin-top: 2rem;
    margin-bottom: 0.75rem;
    line-height: 1.5;
}
.article-content h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--ink);
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}
.article-content p {
    margin-bottom: 1.5rem;
    line-height: 1.9;
}
.article-content img {
    border-radius: 0.75rem;
    margin: 2rem 0;
    box-shadow: 0 8px 30px rgba(31,40,35,0.1);
}
.article-content ul {
    list-style: disc;
    padding-left: 1.5rem;
    margin-bottom: 1.5rem;
}
.article-content ol {
    list-style: decimal;
    padding-left: 1.5rem;
    margin-bottom: 1.5rem;
}
.article-content li {
    margin-bottom: 0.5rem;
    line-height: 1.8;
}
.article-content blockquote {
    border-left: 4px solid var(--brand);
    padding: 1rem 1.5rem;
    background: var(--paper);
    border-radius: 0 0.75rem 0.75rem 0;
    margin: 2rem 0;
    color: #555;
    font-style: italic;
}
.article-content a {
    color: var(--brand-dark);
    text-decoration: underline;
    text-underline-offset: 4px;
}
.article-content a:hover { color: var(--brand); }
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    font-size: 0.9375rem;
}
.article-content th, .article-content td {
    border: 1px solid rgba(31,38,33,0.12);
    padding: 0.75rem 1rem;
    text-align: left;
}
.article-content th {
    background: var(--paper);
    font-weight: 600;
    color: var(--ink);
}

.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

@media (max-width: 639px) {
    .article-content h2 { font-size: 1.5rem; }
    .article-content h3 { font-size: 1.25rem; }
    .article-content { font-size: 1rem; }
}

/* roulang page: category2 */
:root {
            --brand: #C9A063;
            --brand-dark: #A77E45;
            --ink: #1F2621;
            --paper: #FAF7F2;
            --muted: #F2EFE9;
            --accent: #B5543C;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--paper);
            color: var(--ink);
            line-height: 1.6;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        input,
        select,
        textarea {
            font-family: inherit;
        }
        .container-x {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }
        @media (min-width: 640px) {
            .container-x {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .container-x {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        .font-serif-cn {
            font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
        }
        section[id] {
            scroll-margin-top: 80px;
        }

        /* 导航 */
        .nav-link {
            position: relative;
            padding: 0.5rem 0;
            transition: color 0.2s;
        }
        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 2px;
            background: var(--brand);
            transform: scaleX(0);
            transform-origin: center;
            transition: transform 0.3s;
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: var(--brand-dark);
        }

        /* 按钮 */
        .btn-gold {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--brand);
            color: var(--ink);
            border-radius: 0.5rem;
            font-weight: 500;
            padding: 0.625rem 1.25rem;
            transition: all 0.2s;
            border: 1px solid transparent;
            min-height: 44px;
        }
        .btn-gold:hover {
            background: var(--brand-dark);
            color: #fff;
            border-color: var(--brand-dark);
        }
        .btn-gold:focus-visible,
        .btn-outline:focus-visible,
        .btn-outline-light:focus-visible,
        .nav-link:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 2px;
        }
        .btn-gold:active {
            transform: scale(0.98);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--ink);
            border: 1px solid rgba(31, 38, 33, 0.4);
            border-radius: 0.5rem;
            font-weight: 500;
            padding: 0.625rem 1.25rem;
            transition: all 0.2s;
            min-height: 44px;
        }
        .btn-outline:hover {
            background: rgba(31, 38, 33, 0.05);
            border-color: var(--ink);
        }
        .btn-outline:active {
            transform: scale(0.98);
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.5);
            border-radius: 0.5rem;
            font-weight: 500;
            padding: 0.625rem 1.25rem;
            transition: all 0.2s;
            min-height: 44px;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
        }
        .btn-outline-light:active {
            transform: scale(0.98);
        }

        /* 移动端菜单 */
        .mobile-menu {
            display: none;
        }
        .mobile-menu.open {
            display: block;
        }

        /* 卡片 */
        .card {
            background: #fff;
            border: 1px solid rgba(31, 38, 33, 0.06);
            border-radius: 1rem;
            box-shadow: 0 8px 30px rgba(31, 40, 35, 0.08);
            transition: all 0.3s;
        }
        .card:hover {
            box-shadow: 0 12px 40px rgba(31, 40, 35, 0.14);
            transform: translateY(-4px);
        }

        /* FAQ */
        .faq-item {
            border-bottom: 1px solid rgba(31, 38, 33, 0.08);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            padding: 1.25rem 0;
            transition: color 0.2s;
        }
        .faq-question:hover {
            color: var(--brand-dark);
        }
        .faq-icon {
            transition: transform 0.3s;
            font-size: 1.5rem;
            line-height: 1;
            color: var(--brand);
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        /* 表单 */
        .form-label {
            display: block;
            font-size: 0.875rem;
            font-weight: 500;
            margin-bottom: 0.375rem;
            color: #1F2621;
        }
        .form-input {
            width: 100%;
            background: #fff;
            border: 1px solid rgba(31, 38, 33, 0.12);
            border-radius: 0.5rem;
            padding: 0.625rem 0.875rem;
            color: var(--ink);
            transition: all 0.2s;
            font-size: 0.875rem;
        }
        .form-input::placeholder {
            color: #9CA3AF;
        }
        .form-input:focus {
            outline: none;
            border-color: var(--brand);
            box-shadow: 0 0 0 4px rgba(201, 160, 99, 0.2);
        }
        select.form-input {
            appearance: auto;
        }

        /* 数字 */
        .stat-number {
            font-family: "Noto Serif SC", "Source Han Serif SC", serif;
            font-size: clamp(1.6rem, 3vw, 2.6rem);
            font-weight: 700;
            color: var(--brand);
            line-height: 1.2;
            white-space: nowrap;
        }

        /* 流程时间线 */
        .timeline-line {
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 1px;
            background: rgba(201, 160, 99, 0.35);
        }
        .timeline-dot {
            position: absolute;
            left: -10px;
            top: 4px;
            width: 20px;
            height: 20px;
            border-radius: 999px;
            background: var(--brand);
            border: 4px solid var(--muted);
        }

        /* 浮动按钮 */
        .back-to-top {
            position: fixed;
            bottom: 6rem;
            right: 1.5rem;
            z-index: 50;
            width: 44px;
            height: 44px;
            border-radius: 999px;
            background: var(--ink);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 6px 20px rgba(31, 38, 33, 0.25);
            transition: all 0.2s;
        }
        .back-to-top:hover {
            background: var(--brand-dark);
            transform: translateY(-2px);
        }
        .float-cta {
            position: fixed;
            bottom: 1.5rem;
            right: 1.5rem;
            z-index: 50;
            background: var(--brand);
            color: var(--ink);
            border-radius: 999px;
            padding: 0.875rem 1.5rem;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            box-shadow: 0 10px 30px rgba(201, 160, 99, 0.4);
            transition: all 0.2s;
            min-height: 48px;
        }
        .float-cta:hover {
            background: var(--brand-dark);
            color: #fff;
            transform: translateY(-2px);
        }
        @media (max-width: 640px) {
            .float-cta {
                padding: 0.75rem 1rem;
                font-size: 0.875rem;
            }
            .float-cta .cta-text-full {
                display: none;
            }
            .back-to-top {
                right: 1.25rem;
            }
        }

/* roulang page: category3 */
:root {
            --brand: #C9A063;
            --brand-dark: #A77E45;
            --ink: #1F2621;
            --paper: #FAF7F2;
            --muted: #F2EFE9;
            --accent: #B5543C;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--paper);
            color: var(--ink);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
        }
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 1rem;
        }
        .container-x {
            max-width: 80rem;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }
        @media (min-width: 640px) {
            .container-x {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .container-x {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        .font-serif-cn {
            font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
        }
        .btn-gold {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--brand);
            color: var(--ink);
            border-radius: 0.5rem;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 2px 12px rgba(201, 160, 99, 0.2);
        }
        .btn-gold:hover {
            background: var(--brand-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(201, 160, 99, 0.35);
        }
        .btn-gold:active {
            transform: scale(0.98);
        }
        .btn-gold:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 2px;
        }
        .nav-link {
            position: relative;
            padding-bottom: 4px;
            transition: color 0.3s ease;
        }
        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--brand);
            border-radius: 2px;
            transition: width 0.3s ease;
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            width: 100%;
        }
        .nav-link.active {
            color: var(--brand-dark);
        }
        .desktop-nav {
            display: none;
        }
        .mobile-menu-toggle {
            display: flex;
        }
        @media (min-width: 1024px) {
            .desktop-nav {
                display: flex;
            }
            .mobile-menu-toggle {
                display: none;
            }
        }
        .mobile-menu {
            display: none;
        }
        .mobile-menu.open {
            display: block;
        }
        section {
            scroll-margin-top: 80px;
        }
        .card-shadow {
            box-shadow: 0 8px 30px rgba(31, 40, 35, 0.08);
        }
        .card-shadow:hover {
            box-shadow: 0 12px 36px rgba(31, 40, 35, 0.14);
            transform: translateY(-4px);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 320px;
        }
        .faq-icon {
            transition: transform 0.3s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .form-input {
            width: 100%;
            padding: 0.75rem 1rem;
            border-radius: 0.5rem;
            border: 1px solid rgba(0, 0, 0, 0.1);
            background: #fff;
            transition: border-color 0.3s, box-shadow 0.3s;
        }
        .form-input:focus {
            outline: none;
            border-color: var(--brand);
            box-shadow: 0 0 0 3px rgba(201, 160, 99, 0.25);
        }
        @media (max-width: 640px) {
            .btn-gold {
                min-height: 44px;
                padding-left: 1.25rem;
                padding-right: 1.25rem;
            }
        }