/* roulang page: index */
:root {
    --primary: #1E1812;
    --accent: #B0895D;
    --bg: #F7F2EA;
    --card: #FFFFFF;
    --warm-tint: #F1E8DC;
    --text: #26211C;
    --muted: #7A6F64;
    --line: #E5DCD1;
    --success: #4F7250;
    --warning: #B9703A;
    --error: #B4472D;
    --font-head: 'Noto Serif SC', 'Source Han Serif SC', Georgia, serif;
    --font-body: 'Noto Sans SC', 'Source Han Sans SC', 'Helvetica Neue', 'PingFang SC', sans-serif;
    --radius-card: 10px;
    --radius-btn: 999px;
    --radius-input: 6px;
    --radius-img: 8px;
    --shadow-card: 0 2px 8px rgba(30,24,18,.06);
    --shadow-hover: 0 12px 24px rgba(30,24,18,.10);
    --shadow-cta: 0 6px 16px rgba(176,137,93,.35);
    --gutter: 24px;
    --sec-space: 100px;
    --sec-space-mobile: 64px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--text);
    line-height: 1.8;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: all .25s ease; }
a:hover { color: var(--accent); }
ul, ol { list-style: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; font-size: 14px; color: var(--text); }
h1, h2, h3, h4, h5 { font-family: var(--font-head); font-weight: 700; line-height: 1.3; color: var(--text); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 var(--gutter); }
.section-pad { padding: var(--sec-space) 0; }
@media (max-width: 639px) {
    .section-pad { padding: var(--sec-space-mobile) 0; }
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 0 28px; height: 48px; border-radius: var(--radius-btn);
    font-size: 15px; font-weight: 600; letter-spacing: .02em;
    transition: all .25s ease; white-space: nowrap; border: 1.5px solid transparent;
    cursor: pointer; line-height: 1;
}
.btn-accent {
    background: linear-gradient(135deg, #C6A179, #B0895D);
    color: #1E1812; box-shadow: var(--shadow-cta);
}
.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(176,137,93,.45);
    color: #1E1812;
}
.btn-accent:focus-visible {
    outline: 2px solid var(--accent); outline-offset: 2px;
}
.btn-outline {
    background: transparent;
    border-color: var(--accent);
    color: var(--accent);
}
.btn-outline:hover {
    background: var(--accent); color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-cta);
}
.btn-outline-light {
    background: transparent; border-color: rgba(255,255,255,.8);
    color: #fff;
}
.btn-outline-light:hover {
    background: rgba(255,255,255,.15); color: #fff;
}
.btn-lg { height: 52px; padding: 0 36px; font-size: 16px; }
.btn-block { width: 100%; }

/* ===== 导航 ===== */
.site-header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(30,24,18,.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,.06);
    transition: background .3s ease, box-shadow .3s ease;
    height: 76px;
}
.site-header.scrolled {
    background: rgba(30,24,18,.96);
    box-shadow: 0 4px 20px rgba(0,0,0,.2);
}
.header-row {
    display: flex; align-items: center; justify-content: space-between;
    height: 76px; gap: 20px;
}
.brand-logo {
    display: flex; flex-direction: column; line-height: 1.1;
    flex-shrink: 0;
}
.brand-cn {
    font-family: var(--font-head); font-size: 20px; font-weight: 700;
    color: #fff; letter-spacing: .02em;
}
.brand-en {
    font-size: 10px; letter-spacing: .3em; color: var(--accent);
    font-weight: 600; text-transform: uppercase;
}
.main-nav {
    display: flex; align-items: center; gap: 32px;
}
.main-nav .nav-link {
    color: rgba(255,255,255,.85); font-size: 15px; font-weight: 500;
    padding: 8px 0; position: relative; white-space: nowrap;
}
.main-nav .nav-link::after {
    content: ''; position: absolute; left: 0; bottom: 0;
    width: 0; height: 2px; background: var(--accent);
    transition: width .25s ease;
}
.main-nav .nav-link:hover {
    color: #fff;
}
.main-nav .nav-link:hover::after { width: 100%; }
.main-nav .nav-link.active {
    color: #fff;
}
.main-nav .nav-link.active::after { width: 100%; }
.nav-cta {
    height: 42px; padding: 0 24px; font-size: 14px;
    flex-shrink: 0;
}
.hamburger {
    display: none; flex-direction: column; gap: 5px;
    width: 44px; height: 44px; align-items: center; justify-content: center;
    border-radius: 8px; background: rgba(255,255,255,.08);
}
.hamburger span {
    display: block; width: 20px; height: 2px; background: #fff;
    border-radius: 2px; transition: all .3s ease;
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero 首屏 ===== */
.hero {
    position: relative;
    min-height: 85vh;
    display: flex; align-items: center;
    background: url('/assets/images/backpic/back-1.jpg') center center / cover no-repeat;
    margin-top: 76px;
    overflow: hidden;
}
.hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(30,24,18,.65) 0%, rgba(30,24,18,.45) 50%, rgba(30,24,18,.75) 100%);
}
.hero-content {
    position: relative; z-index: 2;
    text-align: center; padding: 80px 24px 120px;
    max-width: 900px; margin: 0 auto;
}
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.25);
    color: #fff; padding: 6px 18px; border-radius: 999px;
    font-size: 13px; letter-spacing: .06em; margin-bottom: 28px;
    backdrop-filter: blur(4px);
}
.hero h1 {
    font-size: 48px; line-height: 1.25; color: #fff;
    margin-bottom: 20px; letter-spacing: .02em;
    text-shadow: 0 2px 20px rgba(0,0,0,.3);
}
.hero h1 .h1-break { display: block; }
.hero-sub {
    font-size: 18px; color: rgba(255,255,255,.92);
    max-width: 640px; margin: 0 auto 38px; line-height: 1.7;
}
.hero-buttons {
    display: flex; gap: 16px; justify-content: center;
    flex-wrap: wrap;
}
.hero-stats {
    position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
    width: 100%; max-width: 900px;
    background: rgba(30,24,18,.55);
    backdrop-filter: blur(6px);
    border-radius: 16px 16px 0 0;
    border: 1px solid rgba(255,255,255,.15);
    border-bottom: none;
    display: flex; justify-content: center; gap: 48px;
    padding: 20px 32px;
}
.hero-stat {
    text-align: center; color: #fff;
}
.hero-stat .num {
    font-family: var(--font-head); font-size: 26px; font-weight: 800;
    color: var(--accent); display: block;
}
.hero-stat .label { font-size: 13px; color: rgba(255,255,255,.85); }

/* ===== 指标看板 ===== */
.metrics-section {
    padding-top: 60px; padding-bottom: 20px;
    background: var(--bg);
}
.metric-card {
    background: var(--card);
    border-radius: var(--radius-card);
    padding: 28px 24px;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--line);
    text-align: center;
    margin-bottom: 24px;
    transition: transform .25s ease, box-shadow .25s ease;
}
.metric-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}
.metric-num {
    font-family: var(--font-head); font-size: 60px; font-weight: 800;
    color: var(--primary); line-height: 1.1;
}
.metric-num .suffix { font-size: 28px; color: var(--accent); }
.metric-label {
    font-size: 14px; font-weight: 600; color: var(--text);
    margin-top: 10px;
}
.metric-desc {
    font-size: 13px; color: var(--muted); margin-top: 6px;
}

/* ===== 板块标题 ===== */
.section-head {
    text-align: center; max-width: 700px;
    margin: 0 auto 56px;
}
.section-head .section-tag {
    display: inline-flex; align-items: center; gap: 6px;
    background: var(--warm-tint); color: var(--primary);
    border: 1px solid var(--line);
    padding: 4px 16px; border-radius: 999px;
    font-size: 12px; font-weight: 600; letter-spacing: .08em;
    margin-bottom: 18px;
}
.section-head h2 {
    font-size: 34px; color: var(--text); margin-bottom: 14px;
}
.section-head p {
    font-size: 15px; color: var(--muted); line-height: 1.7;
}

/* ===== 服务矩阵 ===== */
.services-section {
    padding: var(--sec-space) 0;
    background: var(--bg);
}
.service-card {
    background: var(--card);
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--line);
    margin-bottom: 24px;
    transition: transform .25s ease, box-shadow .25s ease;
}
.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}
.service-img {
    height: 200px; overflow: hidden;
}
.service-img img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform .4s ease;
}
.service-card:hover .service-img img {
    transform: scale(1.03);
}
.service-info {
    padding: 24px;
}
.service-info h3 {
    font-size: 20px; margin-bottom: 8px;
}
.service-info p {
    font-size: 14px; color: var(--muted); line-height: 1.7;
    margin-bottom: 14px;
}
.service-tags {
    display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px;
}
.tag {
    display: inline-block;
    background: var(--warm-tint);
    color: var(--primary);
    font-size: 12px; font-weight: 500;
    padding: 4px 12px; border-radius: 999px;
    border: 1px solid var(--line);
}
.service-link {
    font-size: 14px; font-weight: 600; color: var(--accent);
    display: inline-flex; align-items: center; gap: 6px;
}
.service-link:hover { gap: 10px; color: var(--primary); }
.service-link i { font-size: 12px; }

/* ===== 结果对比 ===== */
.compare-section {
    padding: var(--sec-space) 0;
    background: var(--card);
}
.compare-panel {
    padding: 36px 32px;
    border-radius: var(--radius-card);
    height: 100%;
    min-height: 320px;
    display: flex; flex-direction: column;
}
.compare-old {
    background: #F2EFEA;
    border: 1px solid var(--line);
}
.compare-new {
    background: var(--warm-tint);
    border: 1px solid rgba(176,137,93,.4);
}
.panel-tag {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 15px; font-weight: 700; margin-bottom: 20px;
    padding: 6px 16px; border-radius: 999px;
}
.compare-old .panel-tag {
    background: #E5DED5; color: #6B5D52;
}
.compare-new .panel-tag {
    background: var(--accent); color: #fff;
}
.compare-panel ul {
    display: flex; flex-direction: column; gap: 16px;
    flex-grow: 1;
}
.compare-panel li {
    font-size: 15px; line-height: 1.6;
    padding-left: 28px; position: relative;
}
.compare-old li::before {
    content: '✕';
    position: absolute; left: 0; top: 0;
    color: #B9703A; font-size: 14px; font-weight: 700;
}
.compare-new li::before {
    content: '✓';
    position: absolute; left: 0; top: 0;
    color: var(--success); font-size: 16px; font-weight: 700;
}

/* ===== 资讯列表 ===== */
.news-section {
    padding: var(--sec-space) 0;
    background: var(--bg);
}
.news-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
}
.news-list {
    display: flex; flex-direction: column; gap: 16px;
}
.news-item {
    display: flex; gap: 20px;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    padding: 16px;
    transition: all .25s ease;
}
.news-item:hover {
    background: #FCF9F5;
    box-shadow: var(--shadow-card);
}
.news-thumb {
    width: 160px; height: 110px; flex-shrink: 0;
    border-radius: var(--radius-img); overflow: hidden;
}
.news-thumb img {
    width: 100%; height: 100%; object-fit: cover;
}
.news-body {
    flex: 1; min-width: 0;
}
.news-meta {
    display: flex; align-items: center; gap: 12px;
    margin-bottom: 6px;
}
.news-cat {
    background: var(--warm-tint); color: var(--primary);
    font-size: 12px; font-weight: 600;
    padding: 2px 10px; border-radius: 999px;
    border: 1px solid var(--line);
}
.news-date {
    font-size: 12px; color: var(--muted);
}
.news-body h3 {
    font-size: 17px; line-height: 1.4; margin-bottom: 6px;
    transition: color .25s ease;
}
.news-item:hover .news-body h3 { color: var(--accent); }
.news-body p {
    font-size: 14px; color: var(--muted);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 8px;
}
.news-more {
    font-size: 13px; font-weight: 600; color: var(--accent);
    display: inline-flex; align-items: center; gap: 4px;
}
.news-more i { font-size: 11px; transition: transform .25s ease; }
.news-item:hover .news-more i { transform: translateX(4px); }

.news-side {
    display: flex; flex-direction: column; gap: 24px;
}
.side-panel {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    padding: 24px;
    box-shadow: var(--shadow-card);
}
.side-panel h3 {
    font-size: 18px; margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--warm-tint);
    position: relative;
}
.side-panel h3::after {
    content: ''; position: absolute; left: 0; bottom: -2px;
    width: 40px; height: 2px; background: var(--accent);
}
.side-panel ul {
    display: flex; flex-direction: column; gap: 12px;
}
.side-panel li {
    font-size: 14px; padding-left: 14px; position: relative;
    color: var(--muted);
}
.side-panel li::before {
    content: '·'; position: absolute; left: 0; color: var(--accent);
    font-size: 20px; line-height: 1;
}
.side-panel li:hover { color: var(--accent); }
.empty-state {
    background: var(--card);
    border: 1px dashed var(--line);
    border-radius: var(--radius-card);
    padding: 60px 32px;
    text-align: center;
    color: var(--muted);
}
.empty-state p { margin-bottom: 16px; }

/* ===== FAQ ===== */
.faq-section {
    padding: var(--sec-space) 0;
    background: var(--card);
}
.faq-wrap {
    max-width: 800px; margin: 0 auto;
}
.faq-accordion {
    display: flex; flex-direction: column; gap: 12px;
}
.faq-accordion .accordion-item {
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    overflow: hidden;
    transition: border-color .3s ease, background .3s ease;
}
.faq-accordion .accordion-item.is-active {
    border-color: var(--accent);
    background: #FCF9F5;
}
.faq-accordion .accordion-title {
    font-family: var(--font-head);
    font-size: 17px; font-weight: 600; color: var(--text);
    padding: 20px 54px 20px 24px !important;
    background: transparent !important;
    position: relative;
    display: flex !important;
    align-items: center;
    line-height: 1.4;
}
.faq-accordion .accordion-title .faq-icon {
    position: absolute; right: 20px; top: 50%;
    transform: translateY(-50%);
    width: 28px; height: 28px;
    border-radius: 50%;
    background: var(--warm-tint);
    border: 1px solid var(--line);
    display: flex; align-items: center; justify-content: center;
    font-size: 14px; color: var(--accent);
    transition: all .3s ease;
}
.faq-accordion .accordion-title .faq-icon::before {
    content: '+';
}
.faq-accordion .accordion-item.is-active .accordion-title .faq-icon::before {
    content: '−';
}
.faq-accordion .accordion-item.is-active .faq-icon {
    background: var(--accent); color: #fff;
    transform: translateY(-50%) rotate(180deg);
}
.faq-accordion .accordion-content {
    padding: 0 24px 20px !important;
    background: transparent !important;
    font-size: 15px; line-height: 1.8; color: var(--muted);
}

/* ===== 转化表单 ===== */
.contact-section {
    padding: var(--sec-space) 0;
    background: linear-gradient(160deg, #1E1812 0%, #2B2219 100%);
    position: relative;
}
.contact-wrap {
    background: var(--card);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,.3);
}
.contact-info {
    background: var(--primary);
    color: #fff;
    padding: 48px 40px;
    display: flex; flex-direction: column; justify-content: center;
}
.contact-info h2 {
    color: #fff; font-size: 28px; margin-bottom: 12px;
}
.contact-info > p {
    color: rgba(255,255,255,.7); font-size: 14px;
    margin-bottom: 28px; line-height: 1.7;
}
.contact-info-list {
    display: flex; flex-direction: column; gap: 18px;
}
.contact-info-list li {
    display: flex; align-items: center; gap: 14px;
    font-size: 14px; color: rgba(255,255,255,.9);
}
.contact-info-list li i {
    width: 38px; height: 38px;
    background: rgba(176,137,93,.25);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: var(--accent); font-size: 15px;
    flex-shrink: 0;
}
.contact-form-wrap {
    padding: 40px;
}
.contact-form-wrap label {
    font-size: 13px; font-weight: 600;
    color: var(--text); margin-bottom: 4px;
    line-height: 1.6;
}
.contact-form-wrap label .required { color: var(--error); }
.contact-form-wrap input,
.contact-form-wrap select,
.contact-form-wrap textarea {
    width: 100%;
    height: 48px;
    border: 1px solid var(--line);
    border-radius: var(--radius-input);
    padding: 0 14px;
    background: #fff;
    font-size: 14px;
    margin-bottom: 16px;
    transition: border-color .25s ease, box-shadow .25s ease;
}
.contact-form-wrap textarea {
    height: 100px; resize: vertical; padding: 12px 14px;
}
.contact-form-wrap input:focus,
.contact-form-wrap select:focus,
.contact-form-wrap textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(176,137,93,.15);
}
.contact-form-wrap select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%237A6F64' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
}
.contact-form-wrap .btn { margin-top: 8px; }

/* ===== CTA 横幅 ===== */
.cta-banner {
    position: relative;
    padding: 80px 0;
    background: url('/assets/images/backpic/back-2.jpg') center center / cover no-repeat;
    background-attachment: fixed;
    text-align: center;
}
.cta-overlay {
    position: absolute; inset: 0;
    background: rgba(30,24,18,.7);
}
.cta-content {
    position: relative; z-index: 2;
    max-width: 700px; margin: 0 auto;
}
.cta-content h2 {
    color: #fff; font-size: 32px; margin-bottom: 12px;
}
.cta-content p {
    color: rgba(255,255,255,.8); font-size: 16px;
    margin-bottom: 28px;
}

/* ===== 页脚 ===== */
.site-footer {
    background: #16110C;
    color: rgba(255,255,255,.75);
    padding: 60px 0 0;
}
.footer-grid {
    padding-bottom: 40px;
}
.footer-brand {
    display: flex; flex-direction: column; line-height: 1.2;
    margin-bottom: 14px;
}
.footer-brand .brand-cn {
    font-size: 20px; font-weight: 700; color: #fff;
}
.footer-brand .brand-en {
    font-size: 10px; letter-spacing: .3em; color: var(--accent);
}
.site-footer h4 {
    color: #fff; font-size: 16px; margin-bottom: 18px;
    font-family: var(--font-head);
}
.site-footer ul {
    display: flex; flex-direction: column; gap: 10px;
}
.site-footer ul li {
    font-size: 14px; color: rgba(255,255,255,.65);
    display: flex; align-items: center; gap: 10px;
}
.site-footer ul li i {
    color: var(--accent); font-size: 13px;
}
.site-footer ul li a {
    color: rgba(255,255,255,.65);
}
.site-footer ul li a:hover { color: #fff; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.08);
    padding: 20px 0;
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 8px;
}
.footer-bottom p {
    font-size: 13px; color: rgba(255,255,255,.4);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .news-layout {
        grid-template-columns: 1fr;
    }
    .hero h1 { font-size: 40px; }
}
@media (max-width: 767.98px) {
    .header-row { gap: 12px; }
    .main-nav {
        position: fixed; top: 76px; left: 0; right: 0;
        background: rgba(30,24,18,.98);
        flex-direction: column; align-items: center; gap: 4px;
        padding: 24px 20px 32px;
        box-shadow: 0 10px 30px rgba(0,0,0,.3);
        transform: translateY(-160%);
        transition: transform .35s ease;
        border-bottom: 1px solid rgba(255,255,255,.1);
    }
    .main-nav.open { transform: translateY(0); }
    .main-nav .nav-link {
        font-size: 18px; padding: 14px 0; width: 100%; text-align: center;
    }
    .main-nav .nav-link::after { display: none; }
    .hamburger { display: flex; }
    .nav-cta { display: none; }
    .hero { min-height: 90vh; margin-top: 76px; }
    .hero h1 { font-size: 32px; }
    .hero-sub { font-size: 16px; }
    .hero-stats {
        gap: 24px; padding: 16px 20px; flex-wrap: wrap;
    }
    .hero-stat .num { font-size: 20px; }
    .hero-stat .label { font-size: 12px; }
    .metric-num { font-size: 48px; }
    .section-head h2 { font-size: 26px; }
    .section-head p { font-size: 14px; }
    .news-item { flex-direction: column; }
    .news-thumb { width: 100%; height: 160px; }
    .compare-panel { min-height: auto; padding: 28px 24px; }
    .contact-info, .contact-form-wrap { padding: 32px 24px; }
    .contact-wrap { flex-direction: column; }
    .cta-content h2 { font-size: 24px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .footer-grid > .cell { margin-bottom: 24px; }
}
@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .hero h1 { font-size: 28px; }
    .hero-buttons { flex-direction: column; width: 100%; }
    .hero-buttons .btn { width: 100%; }
    .metric-card { padding: 20px 16px; }
    .metric-num { font-size: 40px; }
    .section-head h2 { font-size: 24px; }
    .contact-form-wrap .btn { font-size: 15px; }
}

/* ===== 动效偏好 ===== */
@media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; }
    html { scroll-behavior: auto; }
    .service-img img, .service-card, .btn { transition: none; }
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #C4B6A6; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* roulang page: article */
:root {
  --primary: #1E1812;
  --primary-light: #3A2E22;
  --accent: #B0895D;
  --accent-dark: #96714A;
  --accent-light: #D9BC95;
  --bg: #F7F2EA;
  --card: #FFFFFF;
  --warm-tint: #F1E8DC;
  --text: #26211C;
  --muted: #7A6F64;
  --line: #E5DCD1;
  --success: #4F7250;
  --warning: #B9703A;
  --error: #B4472D;
  --font-head: "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --radius-card: 10px;
  --radius-btn: 999px;
  --radius-input: 6px;
  --radius-img: 8px;
  --shadow-card: 0 2px 8px rgba(30, 24, 18, .06);
  --shadow-hover: 0 12px 24px rgba(30, 24, 18, .10);
  --shadow-cta: 0 6px 16px rgba(176, 137, 93, .35);
  --transition: .25s ease;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; text-decoration: none; transition: color var(--transition), background var(--transition); }

button { font-family: inherit; border: none; background: none; cursor: pointer; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(30, 24, 18, .92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  transition: background var(--transition), box-shadow var(--transition);
}

.site-header.scrolled {
  background: rgba(30, 24, 18, .98);
  box-shadow: 0 6px 20px rgba(0, 0, 0, .18);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.header-logo { display: flex; align-items: center; }

.brand-logo { display: flex; align-items: baseline; gap: 10px; }

.brand-cn {
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  letter-spacing: .02em;
  white-space: nowrap;
}

.brand-en {
  font-size: 11px;
  letter-spacing: .28em;
  color: var(--accent);
  text-transform: uppercase;
  font-weight: 500;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-left: auto;
}

.nav-link {
  color: rgba(255, 255, 255, .82);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 2px;
  position: relative;
  letter-spacing: .02em;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}

.nav-link:hover { color: #fff; }

.nav-link:hover::after { width: 100%; }

.nav-link.active { color: #fff; }

.nav-link.active::after { width: 100%; }

.btn-nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  background: linear-gradient(135deg, #D4A96A, #B0895D);
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
  border-radius: var(--radius-btn);
  box-shadow: var(--shadow-cta);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  white-space: nowrap;
}

.btn-nav-cta:hover { transform: translateY(-2px); box-shadow: 0 10px 22px rgba(176, 137, 93, .4); color: var(--primary); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 8px;
  background: rgba(255, 255, 255, .04);
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }

.nav-toggle.open span:nth-child(2) { opacity: 0; }

.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Breadcrumb ===== */
.breadcrumb {
  padding: 28px 0 0;
  font-size: 13px;
  color: var(--muted);
}

.breadcrumb a { color: var(--muted); }

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

.breadcrumb .sep { margin: 0 10px; color: var(--accent); font-weight: 600; }

.breadcrumb .current { color: var(--text); font-weight: 500; }

/* ===== Article Hero ===== */
.article-header {
  padding: 40px 0 36px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.article-cat {
  display: inline-block;
  background: var(--warm-tint);
  border: 1px solid rgba(176, 137, 93, .34);
  color: var(--primary);
  padding: 5px 16px;
  border-radius: var(--radius-btn);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .04em;
}

.article-title {
  font-family: var(--font-head);
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.35;
  margin: 22px 0 18px;
  font-weight: 700;
  color: var(--text);
  max-width: 840px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  font-size: 13px;
  color: var(--muted);
  align-items: center;
}

.article-meta span { display: inline-flex; align-items: center; gap: 7px; }

.article-meta i { color: var(--accent); font-size: 14px; }

.article-meta-label {
  display: inline-block;
  background: var(--card);
  border: 1px solid var(--line);
  padding: 2px 12px;
  border-radius: var(--radius-btn);
  font-size: 12px;
  color: var(--primary);
  font-weight: 500;
}

/* ===== Article Content ===== */
.article-main { padding: 24px 0 0; }

.article-body-wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 0 56px;
}

.article-body {
  font-size: 16px;
  line-height: 1.9;
  color: var(--text);
}

.article-body h2 {
  font-family: var(--font-head);
  font-size: 28px;
  line-height: 1.4;
  margin: 44px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-weight: 700;
}

.article-body h3 {
  font-family: var(--font-head);
  font-size: 22px;
  line-height: 1.4;
  margin: 36px 0 14px;
  font-weight: 600;
}

.article-body h4 {
  font-family: var(--font-head);
  font-size: 18px;
  margin: 28px 0 10px;
}

.article-body p { margin: 0 0 20px; }

.article-body a { color: var(--accent-dark); font-weight: 500; border-bottom: 1px solid rgba(176, 137, 93, .3); }

.article-body a:hover { color: var(--accent); border-color: var(--accent); }

.article-body blockquote {
  margin: 28px 0;
  padding: 18px 26px;
  background: var(--warm-tint);
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
  color: var(--primary);
  font-style: normal;
  font-size: 15px;
  line-height: 1.8;
}

.article-body blockquote p:last-child { margin-bottom: 0; }

.article-body img {
  border-radius: var(--radius-img);
  margin: 24px 0;
  width: auto;
  max-width: 100%;
  height: auto;
}

.article-body figure { margin: 28px 0; }

.article-body figure img { margin: 0; }

.article-body figcaption {
  font-size: 12px;
  color: var(--muted);
  text-align: center;
  margin-top: 8px;
}

.article-body ul,
.article-body ol {
  margin: 0 0 20px;
  padding-left: 26px;
}

.article-body li { margin-bottom: 8px; }

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--line);
}

.article-body th {
  background: var(--primary);
  color: #fff;
  font-weight: 500;
  text-align: left;
  padding: 12px 16px;
  font-size: 14px;
}

.article-body td {
  border-top: 1px solid var(--line);
  padding: 10px 16px;
  font-size: 14px;
}

.article-body tr:nth-child(even) td { background: var(--card); }

.article-body code {
  background: var(--warm-tint);
  border: 1px solid var(--line);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 13px;
  color: var(--primary);
}

.article-body pre {
  background: var(--primary);
  color: #F1E8DC;
  border-radius: 8px;
  padding: 18px 20px;
  margin: 24px 0;
  overflow-x: auto;
  line-height: 1.6;
  font-size: 13px;
}

.article-body pre code { background: none; border: none; color: inherit; padding: 0; }

/* ===== Article Not Found ===== */
.article-missing {
  max-width: 720px;
  margin: 64px auto;
  text-align: center;
  padding: 80px 32px;
  background: var(--card);
  border-radius: var(--radius-card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
}

.article-missing i { font-size: 42px; color: var(--accent); margin-bottom: 16px; }

.article-missing h2 { font-family: var(--font-head); font-size: 28px; margin: 0 0 12px; }

.article-missing p { color: var(--muted); margin: 0 0 28px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 32px;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 600;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, #D4A96A, #B0895D);
  color: var(--primary);
  box-shadow: var(--shadow-cta);
}

.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(176, 137, 93, .45); color: var(--primary); }

.btn-outline {
  background: transparent;
  border: 1.5px solid rgba(255, 255, 255, .7);
  color: #fff;
}

.btn-outline:hover { background: rgba(255, 255, 255, .08); color: #fff; transform: translateY(-2px); }

/* ===== Article Pager / Back ===== */
.article-pager {
  max-width: 720px;
  margin: 0 auto 64px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.pager-link {
  font-size: 14px;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: color var(--transition);
}

.pager-link:hover { color: var(--accent-dark); }

.pager-link i { color: var(--accent); }

/* ===== Related Section ===== */
.related-section {
  padding: 72px 0;
  background: var(--card);
  border-top: 1px solid var(--line);
}

.section-head { text-align: center; margin-bottom: 40px; }

.section-tag {
  display: inline-block;
  background: var(--warm-tint);
  border: 1px solid rgba(176, 137, 93, .28);
  color: var(--accent-dark);
  padding: 4px 16px;
  border-radius: var(--radius-btn);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .06em;
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-head);
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  color: var(--text);
  margin: 0;
  line-height: 1.35;
}

.section-sub { color: var(--muted); font-size: 14px; max-width: 640px; margin: 12px auto 0; }

.related-grid { margin-top: 8px; }

.related-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.related-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); border-color: rgba(176, 137, 93, .4); }

.related-cover {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--warm-tint);
}

.related-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}

.related-card:hover .related-cover img { transform: scale(1.04); }

.related-info { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }

.related-info h3 {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--text);
  line-height: 1.45;
}

.related-card:hover .related-info h3 { color: var(--accent-dark); }

.related-info p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin: 0 0 16px;
  flex: 1;
}

.related-meta {
  font-size: 12px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 12px;
}

.related-meta i { color: var(--accent); }

/* ===== CTA Banner ===== */
.cta-banner {
  padding: 88px 0;
  background: linear-gradient(rgba(30, 24, 18, .86), rgba(30, 24, 18, .86)), url('/assets/images/backpic/back-2.jpg') center / cover no-repeat;
  color: #fff;
  text-align: center;
}

.cta-banner h2 {
  font-family: var(--font-head);
  font-size: clamp(26px, 3.4vw, 36px);
  font-weight: 700;
  line-height: 1.4;
  margin: 0 auto 14px;
  max-width: 720px;
}

.cta-banner p {
  color: rgba(255, 255, 255, .8);
  font-size: 15px;
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.8;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-light {
  background: linear-gradient(135deg, #D4A96A, #B0895D);
  color: var(--primary);
  box-shadow: var(--shadow-cta);
}

.btn-light:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(176, 137, 93, .5); color: var(--primary); }

/* ===== Footer ===== */
.site-footer {
  background: var(--primary);
  color: rgba(255, 255, 255, .7);
  padding: 64px 0 28px;
}

.footer-grid { row-gap: 36px; }

.footer-brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 14px;
}

.footer-brand .brand-cn {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  color: #fff;
}

.footer-brand .brand-en {
  font-size: 11px;
  letter-spacing: .28em;
  color: var(--accent);
  text-transform: uppercase;
}

.site-footer h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin: 0 0 16px;
  font-family: var(--font-head);
}

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

.site-footer ul li {
  margin-bottom: 10px;
  font-size: 14px;
  line-height: 1.6;
}

.site-footer ul a {
  color: rgba(255, 255, 255, .6);
  transition: color var(--transition);
}

.site-footer ul a:hover { color: var(--accent-light); }

.site-footer ul i {
  color: var(--accent);
  margin-right: 8px;
  width: 14px;
  text-align: center;
}

.footer-bottom {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, .1);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255, 255, 255, .45);
}

/* ===== Reveal Animation ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 1023.98px) {
  .header-inner { height: 68px; }

  .nav-toggle { display: flex; }

  .main-nav {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(30, 24, 18, .98);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 28px;
    transform: translateX(100%);
    transition: transform .3s ease;
    padding: 40px 24px;
    margin-left: 0;
  }

  .main-nav.open { transform: translateX(0); }

  .nav-link { font-size: 20px; color: rgba(255, 255, 255, .85); }

  .btn-nav-cta { width: 200px; height: 50px; font-size: 16px; }

  .brand-cn { font-size: 19px; }

  .brand-en { font-size: 10px; }
}

@media (max-width: 639.98px) {
  .container { padding: 0 16px; }

  .breadcrumb { padding-top: 20px; font-size: 12px; }

  .article-header { padding: 28px 0 28px; }

  .article-title { font-size: 27px; margin: 18px 0 14px; }

  .article-meta { gap: 10px 16px; }

  .article-body { font-size: 15px; line-height: 1.85; }

  .article-body h2 { font-size: 23px; }

  .article-body h3 { font-size: 19px; }

  .article-body blockquote { padding: 14px 18px; margin: 22px 0; }

  .article-pager { flex-direction: column; align-items: flex-start; }

  .cta-banner { padding: 64px 0; }

  .cta-banner h2 { font-size: 24px; }

  .cta-actions { flex-direction: column; align-items: center; }

  .cta-actions .btn { width: 100%; max-width: 280px; }

  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }

  .related-info h3 { font-size: 17px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }

  html { scroll-behavior: auto; }
}

/* roulang page: category1 */
:root {
    --primary: #1E1812;
    --primary-light: #2A231C;
    --accent: #B0895D;
    --accent-dark: #96734A;
    --accent-soft: rgba(176, 137, 93, .12);
    --bg: #F7F2EA;
    --card: #FFFFFF;
    --warm-tint: #F1E8DC;
    --text: #26211C;
    --muted: #7A6F64;
    --line: #E5DCD1;
    --success: #4F7250;
    --warning: #B9703A;
    --error: #B4472D;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-pill: 999px;
    --shadow-sm: 0 2px 8px rgba(30, 24, 18, .06);
    --shadow-md: 0 6px 16px rgba(30, 24, 18, .08);
    --shadow-lg: 0 12px 24px rgba(30, 24, 18, .10);
    --shadow-cta: 0 6px 16px rgba(176, 137, 93, .35);
    --font-head: "Noto Serif SC", "Source Han Serif SC", "Songti SC", STSong, Georgia, serif;
    --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    --space-section: 100px;
    --space-section-md: 72px;
    --space-section-sm: 48px;
    --container: 1200px;
    --header-h: 76px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.8;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; background: none; }
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}
.section { padding: var(--space-section) 0; }
.section-sm { padding: 60px 0; }
.section-head {
    margin-bottom: 48px;
    max-width: 640px;
}
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head .sub { display: inline-block; font-size: 13px; letter-spacing: .12em; color: var(--accent); text-transform: uppercase; margin-bottom: 12px; font-weight: 600; }
.section-head h2 {
    font-family: var(--font-head);
    font-size: 32px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--primary);
    letter-spacing: .01em;
}
.section-head p { margin-top: 14px; font-size: 15px; color: var(--muted); line-height: 1.7; }
@media (max-width: 767px) {
    .section { padding: var(--space-section-sm) 0; }
    .section-head h2 { font-size: 26px; }
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 48px;
    padding: 0 30px;
    border-radius: var(--radius-pill);
    font-size: 15px;
    font-weight: 600;
    letter-spacing: .02em;
    cursor: pointer;
    transition: all .25s ease;
    white-space: nowrap;
    border: 1.5px solid transparent;
}
.btn-primary {
    background: linear-gradient(135deg, #C09A6A 0%, var(--accent) 60%, var(--accent-dark) 100%);
    color: #1E1812;
    box-shadow: var(--shadow-cta);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(176, 137, 93, .45);
}
.btn-outline {
    background: transparent;
    border-color: var(--accent);
    color: var(--accent-dark);
}
.btn-outline:hover {
    background: var(--accent-soft);
    border-color: var(--accent-dark);
    transform: translateY(-2px);
}
.btn-lg { height: 54px; padding: 0 40px; font-size: 16px; }
.btn-block { width: 100%; }
.btn:focus-visible, a:focus-visible, button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ===== Badges & Tags ===== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 14px;
    border-radius: var(--radius-pill);
    font-size: 12px;
    font-weight: 500;
    background: var(--accent-soft);
    color: #7A5A3A;
    border: 1px solid rgba(176, 137, 93, .25);
    letter-spacing: .03em;
}
.tag {
    display: inline-block;
    padding: 3px 12px;
    background: var(--warm-tint);
    border: 1px solid var(--line);
    border-radius: var(--radius-pill);
    font-size: 12px;
    color: #8A6B50;
    font-weight: 500;
}

/* ===== Site Header ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(30, 24, 18, .88);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255, 255, 255, .06);
    transition: background .3s ease, box-shadow .3s ease;
    height: var(--header-h);
}
.site-header.scrolled {
    background: rgba(30, 24, 18, .97);
    box-shadow: 0 4px 20px rgba(0, 0, 0, .25);
}
.site-header .container { height: var(--header-h); display: flex; align-items: center; }
.main-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: 20px;
}
.brand-logo {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
    padding: 6px 0;
    flex-shrink: 0;
}
.brand-cn {
    font-family: var(--font-head);
    font-size: 20px;
    font-weight: 700;
    color: #F7F0E6;
    letter-spacing: .04em;
}
.brand-en {
    font-size: 10px;
    color: rgba(255, 255, 255, .5);
    letter-spacing: .35em;
    text-transform: uppercase;
    margin-top: 2px;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}
.nav-link {
    display: inline-flex;
    align-items: center;
    height: 40px;
    padding: 0 18px;
    font-size: 15px;
    color: rgba(255, 255, 255, .75);
    border-radius: var(--radius-pill);
    transition: all .25s ease;
    font-weight: 400;
    letter-spacing: .02em;
}
.nav-link:hover {
    color: #fff;
    background: rgba(255, 255, 255, .08);
}
.nav-link.active {
    color: #1E1812;
    background: linear-gradient(135deg, #C09A6A, var(--accent));
    font-weight: 600;
    box-shadow: 0 2px 10px rgba(176, 137, 93, .25);
}
.btn-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 42px;
    padding: 0 28px;
    background: linear-gradient(135deg, #C09A6A 0%, var(--accent) 60%, var(--accent-dark) 100%);
    color: #1E1812;
    border-radius: var(--radius-pill);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: .03em;
    box-shadow: 0 4px 14px rgba(176, 137, 93, .3);
    transition: all .25s ease;
    flex-shrink: 0;
}
.btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(176, 137, 93, .4);
}
.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
    border-radius: 10px;
    background: rgba(255, 255, 255, .08);
    transition: background .25s;
    flex-shrink: 0;
}
.nav-toggle:hover { background: rgba(255, 255, 255, .15); }
.nav-toggle.active { background: var(--accent); color: #1E1812; }
@media (max-width: 899px) {
    .nav-toggle { display: flex; }
    .nav-links {
        position: fixed;
        top: var(--header-h);
        left: 0;
        right: 0;
        background: rgba(30, 24, 18, .98);
        flex-direction: column;
        align-items: stretch;
        padding: 16px 24px 24px;
        gap: 4px;
        margin-left: 0;
        display: none;
        border-bottom: 1px solid rgba(255, 255, 255, .08);
        backdrop-filter: blur(20px);
    }
    .nav-links.open { display: flex; }
    .nav-link {
        height: 48px;
        justify-content: flex-start;
        border-radius: 8px;
        padding: 0 16px;
        font-size: 16px;
    }
    .btn-cta { height: 40px; padding: 0 20px; font-size: 14px; }
}

/* ===== Page Hero (Category) ===== */
.page-hero {
    position: relative;
    padding: 160px 0 80px;
    background: var(--primary);
    min-height: 440px;
    display: flex;
    align-items: center;
    overflow: hidden;
}
.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
    opacity: .4;
}
.page-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(30,24,18,.92) 0%, rgba(30,24,18,.65) 50%, rgba(30,24,18,.35) 100%);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero .breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: rgba(255, 255, 255, .6);
    margin-bottom: 24px;
}
.page-hero .breadcrumb a { color: rgba(255, 255, 255, .7); transition: color .25s; }
.page-hero .breadcrumb a:hover { color: var(--accent); }
.page-hero .breadcrumb i { font-size: 10px; color: rgba(255, 255, 255, .35); }
.page-hero h1 {
    font-family: var(--font-head);
    font-size: 44px;
    font-weight: 700;
    color: #fff;
    line-height: 1.25;
    letter-spacing: .02em;
    margin-bottom: 18px;
}
.page-hero .lead {
    font-size: 16px;
    color: rgba(255, 255, 255, .8);
    line-height: 1.8;
    max-width: 560px;
    margin-bottom: 28px;
}
.page-hero .hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.page-hero .hero-tags { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 24px; }
.page-hero .hero-tags .tag {
    background: rgba(255, 255, 255, .12);
    border-color: rgba(255, 255, 255, .2);
    color: rgba(255, 255, 255, .85);
}
@media (max-width: 767px) {
    .page-hero { padding: 140px 0 56px; min-height: 380px; }
    .page-hero h1 { font-size: 32px; }
    .page-hero .lead { font-size: 15px; }
}

/* ===== Intro Alternating ===== */
.intro-block {
    display: flex;
    align-items: center;
    gap: 56px;
    padding: var(--space-section) 0;
}
.intro-block:nth-child(odd) .intro-media { order: 1; }
.intro-block:nth-child(odd) .intro-content { order: 2; }
.intro-block:nth-child(even) .intro-media { order: 2; }
.intro-block:nth-child(even) .intro-content { order: 1; }
.intro-media {
    flex: 0 0 48%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}
.intro-media img {
    width: 100%;
    height: 380px;
    object-fit: cover;
    transition: transform .5s ease;
}
.intro-media:hover img { transform: scale(1.03); }
.intro-content { flex: 1; }
.intro-content .badge { margin-bottom: 16px; }
.intro-content h3 {
    font-family: var(--font-head);
    font-size: 26px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.35;
    margin-bottom: 16px;
}
.intro-content p {
    font-size: 15px;
    color: var(--muted);
    line-height: 1.9;
    margin-bottom: 16px;
}
.intro-points { margin-top: 16px; }
.intro-points li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    color: var(--text);
    line-height: 1.7;
    padding: 6px 0;
}
.intro-points li i {
    color: var(--accent);
    font-size: 13px;
    margin-top: 5px;
    flex-shrink: 0;
}
@media (max-width: 899px) {
    .intro-block { flex-direction: column; gap: 28px; padding: var(--space-section-sm) 0; }
    .intro-block:nth-child(odd) .intro-media,
    .intro-block:nth-child(even) .intro-media,
    .intro-block:nth-child(odd) .intro-content,
    .intro-block:nth-child(even) .intro-content { order: unset; }
    .intro-media { flex-basis: auto; width: 100%; }
    .intro-media img { height: 260px; }
    .intro-content h3 { font-size: 22px; }
}

/* ===== Service Matrix ===== */
.service-matrix {
    background: #FFFFFF;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}
.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.service-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all .3s ease;
    display: flex;
    flex-direction: column;
}
.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(176, 137, 93, .4);
}
.service-card .cover {
    height: 190px;
    overflow: hidden;
    position: relative;
}
.service-card .cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
}
.service-card:hover .cover img { transform: scale(1.05); }
.service-card .cover::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(30, 24, 18, .25), transparent 60%);
}
.service-card .body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.service-card .body h3 {
    font-family: var(--font-head);
    font-size: 19px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}
.service-card .body .desc {
    font-size: 14px;
    color: var(--muted);
    line-height: 1.7;
    margin-bottom: 16px;
    flex: 1;
}
.service-card .body .meta-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.service-card .body .link-more {
    font-size: 14px;
    font-weight: 600;
    color: var(--accent-dark);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap .25s ease;
}
.service-card .body .link-more:hover { gap: 10px; }
@media (max-width: 1023px) {
    .service-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 639px) {
    .service-grid { grid-template-columns: 1fr; }
}

/* ===== Process Steps ===== */
.process-section { background: var(--bg); }
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.process-step {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 32px 24px;
    text-align: center;
    position: relative;
    transition: all .3s ease;
    box-shadow: var(--shadow-sm);
}
.process-step:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.process-step .step-num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    margin: 0 auto 18px;
    background: var(--accent-soft);
    border: 1px solid rgba(176, 137, 93, .3);
    border-radius: 50%;
    font-family: var(--font-head);
    font-size: 20px;
    font-weight: 700;
    color: var(--accent-dark);
}
.process-step h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 8px;
}
.process-step p {
    font-size: 13px;
    color: var(--muted);
    line-height: 1.65;
}
@media (max-width: 899px) {
    .process-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 479px) {
    .process-grid { grid-template-columns: 1fr; }
}

/* ===== CTA Banner ===== */
.cta-banner {
    position: relative;
    padding: 96px 0;
    background: var(--primary);
    overflow: hidden;
    text-align: center;
}
.cta-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
    opacity: .3;
}
.cta-banner::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(30,24,18,.85), rgba(30,24,18,.92));
}
.cta-banner .container { position: relative; z-index: 2; }
.cta-banner h2 {
    font-family: var(--font-head);
    font-size: 34px;
    font-weight: 700;
    color: #fff;
    line-height: 1.3;
    margin-bottom: 14px;
}
.cta-banner p {
    font-size: 16px;
    color: rgba(255, 255, 255, .75);
    margin-bottom: 28px;
}
.cta-banner .btn { margin: 0 8px; }
@media (max-width: 767px) {
    .cta-banner { padding: 60px 0; }
    .cta-banner h2 { font-size: 24px; }
}

/* ===== Related Info ===== */
.related-section { background: #FFFFFF; border-top: 1px solid var(--line); }
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.related-card {
    display: flex;
    flex-direction: column;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all .3s ease;
    box-shadow: var(--shadow-sm);
}
.related-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.related-card .cover {
    height: 160px;
    overflow: hidden;
}
.related-card .cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
}
.related-card:hover .cover img { transform: scale(1.04); }
.related-card .body {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.related-card .meta-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    font-size: 12px;
    color: var(--muted);
}
.related-card .meta-row .badge { font-size: 11px; padding: 2px 10px; }
.related-card h3 {
    font-family: var(--font-head);
    font-size: 17px;
    font-weight: 700;
    line-height: 1.4;
    color: var(--text);
    margin-bottom: 10px;
    transition: color .25s;
}
.related-card:hover h3 { color: var(--accent-dark); }
.related-card .summary {
    font-size: 13px;
    color: var(--muted);
    line-height: 1.65;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.related-card .link-more {
    margin-top: 14px;
    font-size: 13px;
    color: var(--accent);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap .25s;
}
.related-card .link-more:hover { gap: 10px; }
@media (max-width: 899px) {
    .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 639px) {
    .related-grid { grid-template-columns: 1fr; }
}

/* ===== Footer ===== */
.site-footer {
    background: var(--primary);
    color: rgba(255, 255, 255, .7);
    padding: 60px 0 28px;
    border-top: 1px solid rgba(255, 255, 255, .06);
}
.footer-grid { margin-bottom: 32px; }
.footer-brand { display: flex; flex-direction: column; margin-bottom: 12px; }
.footer-brand .brand-cn {
    font-family: var(--font-head);
    font-size: 22px;
    font-weight: 700;
    color: #F7F0E6;
}
.footer-brand .brand-en {
    font-size: 11px;
    letter-spacing: .35em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, .4);
    margin-top: 4px;
}
.site-footer h4 {
    font-size: 15px;
    font-weight: 600;
    color: #F7F0E6;
    margin-bottom: 16px;
    letter-spacing: .04em;
}
.site-footer ul li {
    margin-bottom: 10px;
    font-size: 14px;
    line-height: 1.7;
    color: rgba(255, 255, 255, .65);
}
.site-footer ul li a {
    color: rgba(255, 255, 255, .65);
    transition: color .25s, padding-left .25s;
}
.site-footer ul li a:hover {
    color: var(--accent);
    padding-left: 4px;
}
.site-footer ul li i {
    color: var(--accent);
    margin-right: 8px;
    width: 16px;
    text-align: center;
}
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .08);
    padding-top: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: rgba(255, 255, 255, .45);
}
@media (max-width: 639px) {
    .footer-bottom { flex-direction: column; text-align: center; }
}

/* ===== Fade Up Animation ===== */
.fade-up {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity .6s ease, transform .6s ease;
}
.fade-up.in-view {
    opacity: 1;
    transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: .01ms !important;
        transition-duration: .01ms !important;
    }
    .fade-up { opacity: 1; transform: none; }
}

/* ===== Utility ===== */
.text-center { text-align: center; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }