/* roulang page: index */
:root {
    --primary: #EA580C;
    --primary-hover: #C2410C;
    --primary-soft: #FFF4ED;
    --bg-dark: #1C1917;
    --bg-light: #F5F3EF;
    --surface: #FFFFFF;
    --text-main: #292524;
    --text-sub: #78716C;
    --border: #E7E5E4;
    --accent-green: #059669;
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-pill: 999px;
    --shadow-card: 0 2px 8px rgba(28,25,23,0.04);
    --shadow-hover: 0 12px 32px rgba(234,88,12,0.12);
    --shadow-glow: 0 0 60px rgba(234,88,12,0.18);
    --transition: 0.2s ease;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-main);
    line-height: 1.75;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { text-decoration: none; color: var(--primary); transition: color var(--transition); }
a:hover { color: var(--primary-hover); }
button { cursor: pointer; font-family: inherit; }
input, textarea { font-family: inherit; }
.container { max-width: 1320px; }
.section { padding: 96px 0; }
.section-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--primary);
    background: var(--primary-soft);
    border-radius: var(--radius-pill);
    padding: 6px 16px;
    margin-bottom: 16px;
}
.section-title {
    font-size: 36px;
    font-weight: 800;
    letter-spacing: 0.01em;
    line-height: 1.3;
    color: var(--text-main);
    margin-bottom: 12px;
}
.section-subtitle {
    font-size: 16px;
    color: var(--text-sub);
    line-height: 1.75;
    max-width: 660px;
    margin-bottom: 0;
}
.btn-primary-custom {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    padding: 10px 26px;
    font-weight: 600;
    font-size: 15px;
    transition: all var(--transition);
    box-shadow: 0 4px 14px rgba(234,88,12,0.18);
}
.btn-primary-custom:hover {
    background: var(--primary-hover);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(234,88,12,0.24);
}
.btn-primary-custom:active { transform: translateY(-1px); }
.btn-outline-custom {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    color: var(--primary);
    border: 1.5px solid var(--primary);
    border-radius: var(--radius-md);
    padding: 10px 26px;
    font-weight: 600;
    font-size: 15px;
    transition: all var(--transition);
}
.btn-outline-custom:hover {
    background: var(--primary-soft);
    color: var(--primary-hover);
    transform: translateY(-2px);
}
.btn-outline-custom:active { transform: translateY(-1px); }
.btn-outline-dark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    color: var(--primary);
    border: 1.5px solid var(--primary);
    border-radius: var(--radius-md);
    padding: 8px 22px;
    font-weight: 600;
    font-size: 14px;
    transition: all var(--transition);
}
.btn-outline-dark:hover {
    background: var(--primary-soft);
    color: var(--primary-hover);
    transform: translateY(-2px);
}
.btn:focus, .btn-primary-custom:focus, .btn-outline-custom:focus, .btn-outline-dark:focus,
a:focus, button:focus, input:focus, textarea:focus {
    outline: 2px solid var(--primary);
    outline-offset: 3px;
    box-shadow: 0 0 0 3px rgba(234,88,12,0.12);
}
:focus:not(:focus-visible) { outline: none; box-shadow: none; }

/* ===== Header / Nav ===== */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 64px;
    background: rgba(28,25,23,0.92);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    z-index: 1000;
    transition: height 0.3s ease, border-color 0.3s ease;
    border-bottom: 1px solid transparent;
}
.site-header.scrolled {
    height: 56px;
    border-bottom-color: rgba(255,255,255,0.08);
}
.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}
.nav-left { display: flex; align-items: center; gap: 32px; }
.brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    white-space: nowrap;
    transition: opacity 0.2s;
}
.brand:hover { color: #fff; opacity: 0.9; }
.brand-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    flex-shrink: 0;
}
.brand-icon svg { width: 100%; height: 100%; }
.brand .highlight { color: var(--primary); }
.nav-menu { list-style: none; display: flex; gap: 6px; margin: 0; padding: 0; }
.nav-link-custom {
    position: relative;
    display: inline-block;
    color: rgba(255,255,255,0.85);
    font-size: 15px;
    font-weight: 400;
    padding: 8px 12px;
    transition: color 0.2s;
    text-decoration: none;
}
.nav-link-custom:hover { color: #fff; }
.nav-link-custom.active { color: #fff; font-weight: 500; }
.nav-link-custom.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 12px;
    right: 12px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
}
.nav-right { display: flex; align-items: center; gap: 14px; }
.search-btn {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: 50%;
    color: rgba(255,255,255,0.85);
    font-size: 15px;
    transition: background 0.2s, color 0.2s;
}
.search-btn:hover { background: rgba(255,255,255,0.1); color: #fff; }
.search-wrap { position: relative; display: flex; align-items: center; }
.search-input {
    width: 0;
    padding: 0;
    border: none;
    background: rgba(255,255,255,0.1);
    color: #fff;
    border-radius: var(--radius-md);
    font-size: 14px;
    transition: width 0.3s ease, padding 0.3s ease;
    outline: none;
}
.search-input.open { width: 160px; padding: 7px 12px 7px 34px; }
.search-wrap .fa-search {
    position: absolute;
    left: 10px;
    color: rgba(255,255,255,0.6);
    font-size: 13px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s;
}
.search-wrap .fa-search.open { opacity: 1; }
.menu-toggle {
    display: none;
    background: transparent;
    border: none;
    padding: 6px;
    flex-direction: column;
    gap: 5px;
}
.menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
}
.mobile-menu {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(28,25,23,0.98);
    z-index: 1100;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    padding: 40px;
}
.mobile-menu.open { display: flex; }
.mobile-menu .menu-close {
    position: absolute;
    top: 20px;
    right: 24px;
    background: transparent;
    border: none;
    color: #fff;
    font-size: 32px;
    line-height: 1;
}
.mobile-menu a {
    color: #fff;
    font-size: 24px;
    font-weight: 700;
    text-decoration: none;
    transition: color 0.2s;
}
.mobile-menu a:hover { color: var(--primary); }
.mobile-menu a.active { color: var(--primary); }
body.no-scroll { overflow: hidden; }

/* ===== Hero ===== */
.hero-section {
    min-height: 90vh;
    background-color: var(--bg-dark);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    padding-top: 64px;
}
.hero-grid-bg {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 44px 44px;
    pointer-events: none;
}
.hero-glow {
    position: absolute;
    top: -120px; left: -100px;
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, rgba(234,88,12,0.28), transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.hero-inner { position: relative; z-index: 2; width: 100%; padding: 60px 0; }
.hero-content-col { padding-right: 30px; }
.hero-visual-col { display: flex; align-items: center; justify-content: center; position: relative; }
.hero-badge {
    position: relative;
    display: inline-block;
    background: var(--primary-soft);
    border-radius: var(--radius-pill);
    padding: 8px 18px;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    letter-spacing: 0.04em;
    margin-bottom: 20px;
}
.hero-title {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    color: #fff;
    margin-bottom: 18px;
    letter-spacing: 0.01em;
}
.hero-subtitle {
    font-size: 17px;
    color: rgba(255,255,255,0.7);
    line-height: 1.7;
    margin-bottom: 30px;
    max-width: 480px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 36px; }
.hero-trust {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
}
.trust-item { text-align: left; }
.trust-value {
    font-size: 20px;
    font-weight: 800;
    color: #fff;
    display: block;
    line-height: 1.2;
}
.trust-label { font-size: 13px; color: rgba(255,255,255,0.55); }
.hero-img-wrap {
    position: relative;
    width: 100%;
    max-width: 540px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.35);
}
.hero-img-wrap img {
    width: 100%;
    display: block;
    object-fit: cover;
    min-height: 400px;
}
.hero-float-badge {
    position: absolute;
    bottom: 24px;
    left: -18px;
    background: #fff;
    border-radius: 12px;
    padding: 12px 20px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.16);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
}
.hero-float-badge .fa-solid {
    color: var(--primary);
    font-size: 18px;
}

/* ===== Services ===== */
.services-section { padding: 96px 0; }
.services-header { margin-bottom: 48px; }
.service-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
    border: 1px solid rgba(231,229,228,0.5);
}
.service-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}
.service-card-content { padding: 36px 32px; flex: 1 1 auto; }
.service-icon {
    width: 52px;
    height: 52px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: var(--primary-soft);
    color: var(--primary);
    font-size: 22px;
    margin-bottom: 18px;
}
.service-card h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 10px;
}
.service-card p {
    font-size: 14px;
    color: var(--text-sub);
    line-height: 1.75;
    margin-bottom: 18px;
}
.service-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.2s ease;
}
.service-link:hover { gap: 12px; color: var(--primary-hover); }
.service-card-media {
    flex: 0 0 auto;
    min-height: 220px;
    position: relative;
}
.service-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0; left: 0;
}
.feature-badge {
    background: #FAF7F5;
    border-radius: 12px;
    padding: 20px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-align: center;
    height: 100%;
    transition: background 0.2s ease, transform 0.2s ease;
    border: 1px solid rgba(231,229,228,0.5);
}
.feature-badge:hover {
    background: var(--primary-soft);
    transform: translateY(-2px);
}
.feature-badge i { font-size: 22px; color: var(--primary); }
.feature-badge span { font-size: 14px; font-weight: 600; color: var(--text-main); }

/* ===== Stats ===== */
.stats-section {
    background-color: var(--bg-dark);
    position: relative;
    overflow: hidden;
    padding: 80px 0;
}
.stats-glow {
    position: absolute;
    right: -120px;
    top: -120px;
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, rgba(234,88,12,0.18), transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.stats-row {
    display: flex;
    gap: 20px;
    align-items: center;
    position: relative;
    z-index: 2;
}
.stat-item {
    cursor: default;
    transition: transform 0.3s ease;
}
.stat-item:hover { transform: translateY(-6px); }
.stat-item:nth-child(1) { flex: 0 0 20%; }
.stat-item:nth-child(2) { flex: 0 0 30%; }
.stat-item:nth-child(3) { flex: 0 0 20%; }
.stat-item:nth-child(4) { flex: 0 0 30%; }
.stat-value {
    font-size: 64px;
    font-weight: 800;
    color: #F59E0B;
    line-height: 1;
    letter-spacing: -0.01em;
    font-family: 'DIN Alternate', 'Arial Narrow', sans-serif;
}
.stat-label {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    margin-top: 8px;
}

/* ===== Cases ===== */
.cases-section { padding: 96px 0; }
.cases-row { margin-bottom: 24px; }
.case-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    border: 1px solid rgba(231,229,228,0.4);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
    height: 100%;
}
.case-card:hover {
    box-shadow: 0 16px 40px rgba(234,88,12,0.14);
    transform: translateY(-4px);
}
.case-card-media { position: relative; overflow: hidden; }
.case-card-media img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    transition: transform 0.4s ease;
    display: block;
}
.case-card:hover .case-card-media img { transform: scale(1.04); }
.case-card-body { padding: 24px; }
.case-cat {
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    letter-spacing: 0.04em;
    margin-bottom: 6px;
    display: inline-block;
    background: var(--primary-soft);
    border-radius: var(--radius-pill);
    padding: 4px 12px;
}
.case-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 8px;
    line-height: 1.4;
}
.case-desc {
    font-size: 14px;
    color: var(--text-sub);
    line-height: 1.7;
    margin-bottom: 0;
}
.case-card-tall .case-card-media img { height: 260px; }
.case-card-short .case-card-media img { height: 220px; }
.case-offset { margin-top: 48px; }

/* ===== Solutions ===== */
.solutions-section { background: var(--surface); padding: 96px 0; }
.solution-block { margin-bottom: 72px; }
.solution-block:last-child { margin-bottom: 0; }
.solution-img-col { position: relative; padding: 20px; }
.solution-frame {
    position: absolute;
    top: 8px;
    left: 8px;
    right: 24px;
    bottom: 24px;
    border: 2px solid rgba(234,88,12,0.25);
    border-radius: var(--radius-lg);
    pointer-events: none;
}
.solution-img-wrap {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
}
.solution-img-wrap img {
    width: 100%;
    height: 320px;
    object-fit: cover;
    display: block;
}
.solution-tag {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--primary);
    display: inline-block;
    margin-bottom: 12px;
}
.solution-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 14px;
    line-height: 1.35;
}
.solution-text p {
    font-size: 15px;
    color: var(--text-sub);
    line-height: 1.8;
    margin-bottom: 16px;
}
.solution-list { list-style: none; padding: 0; margin-bottom: 22px; }
.solution-list li {
    font-size: 14px;
    color: var(--text-main);
    padding: 6px 0;
    display: flex;
    align-items: center;
    gap: 10px;
}
.solution-list li i { color: var(--primary); font-size: 14px; width: 16px; }

/* ===== News ===== */
.news-section { padding: 96px 0; }
.news-card {
    display: flex;
    background: var(--surface);
    border-radius: 12px;
    box-shadow: var(--shadow-card);
    overflow: hidden;
    margin-bottom: 16px;
    border: 1px solid rgba(231,229,228,0.5);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.news-card:hover {
    box-shadow: 0 8px 28px rgba(234,88,12,0.10);
    transform: translateY(-2px);
}
.news-thumb {
    flex: 0 0 120px;
    height: 90px;
    overflow: hidden;
}
.news-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.news-card:hover .news-thumb img { transform: scale(1.06); }
.news-body { padding: 14px 20px; flex: 1 1 auto; display: flex; flex-direction: column; }
.news-body h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 4px;
    line-height: 1.4;
}
.news-body p {
    font-size: 14px;
    color: var(--text-sub);
    margin-bottom: 8px;
    line-height: 1.6;
    flex: 1 1 auto;
    overflow: hidden;
}
.news-meta {
    display: flex;
    gap: 14px;
    font-size: 12px;
    color: #A8A29E;
}
.news-meta span { display: inline-flex; align-items: center; gap: 4px; }
.news-meta i { font-size: 11px; color: var(--primary); }
.empty-state {
    text-align: center;
    padding: 48px 24px;
    background: var(--surface);
    border-radius: var(--radius-lg);
    border: 1px dashed var(--border);
    color: var(--text-sub);
    font-size: 15px;
}

/* ===== FAQ ===== */
.faq-section { padding: 96px 0; background: var(--bg-light); }
.faq-accordion { max-width: 760px; width: 100%; }
.faq-accordion .accordion-item {
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
    margin-bottom: 12px;
    overflow: hidden;
}
.faq-accordion .accordion-item.active {
    border-color: var(--primary);
    background: var(--primary-soft);
}
.faq-accordion .accordion-header { border-bottom: none; background: transparent; margin-bottom: 0; }
.faq-accordion .accordion-button {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-main);
    background: transparent;
    box-shadow: none;
    padding: 18px 22px;
    position: relative;
}
.faq-accordion .accordion-button:not(.collapsed) {
    color: var(--primary);
    background: transparent;
    box-shadow: none;
}
.faq-accordion .accordion-button::after {
    background-image: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: var(--primary-soft);
    color: var(--primary);
    content: '+';
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    line-height: 1;
    transition: transform 0.25s ease;
    flex-shrink: 0;
}
.faq-accordion .accordion-button:not(.collapsed)::after {
    transform: rotate(45deg);
    background-color: var(--primary);
    color: #fff;
}
.faq-accordion .accordion-body {
    padding: 4px 22px 20px;
    font-size: 14px;
    color: var(--text-sub);
    line-height: 1.8;
}

/* ===== CTA ===== */
.cta-section {
    background-color: var(--bg-dark);
    padding: 96px 0;
    position: relative;
    overflow: hidden;
}
.cta-glow {
    position: absolute;
    left: 50%;
    top: -160px;
    transform: translateX(-50%);
    width: 600px;
    height: 300px;
    background: radial-gradient(ellipse, rgba(234,88,12,0.15), transparent 70%);
    pointer-events: none;
}
.cta-title {
    font-size: 26px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}
.cta-subtitle {
    font-size: 16px;
    color: rgba(255,255,255,0.6);
    margin-bottom: 36px;
}
.cta-card {
    background: rgba(255,255,255,0.08);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: var(--radius-lg);
    padding: 32px;
    max-width: 620px;
    margin: 0 auto;
}
.form-label-custom {
    font-size: 14px;
    color: rgba(255,255,255,0.8);
    margin-bottom: 6px;
    display: block;
}
.form-control-custom {
    width: 100%;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--radius-md);
    padding: 10px 14px;
    color: #fff;
    font-size: 14px;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.form-control-custom::placeholder { color: rgba(255,255,255,0.35); }
.form-control-custom:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(234,88,12,0.15);
    outline: none;
}
textarea.form-control-custom { resize: vertical; min-height: 100px; }

/* ===== Footer ===== */
.site-footer {
    background-color: var(--bg-dark);
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 64px 0 24px;
}
.footer-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
}
.footer-brand .highlight { color: var(--primary); }
.footer-desc {
    font-size: 14px;
    color: rgba(255,255,255,0.55);
    line-height: 1.8;
    max-width: 280px;
}
.footer-title {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 16px;
}
.footer-links { list-style: none; margin: 0; padding: 0; }
.footer-links li { margin-bottom: 8px; }
.footer-links a {
    color: rgba(255,255,255,0.55);
    font-size: 14px;
    text-decoration: none;
    transition: color 0.2s;
}
.footer-links a:hover { color: #fff; }
.footer-contact { list-style: none; margin: 0; padding: 0; }
.footer-contact li {
    color: rgba(255,255,255,0.55);
    font-size: 14px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.footer-contact i { color: var(--primary); width: 16px; font-size: 13px; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.06);
    margin-top: 40px;
    padding-top: 20px;
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,0.4);
}
.footer-social { display: flex; gap: 10px; margin-top: 16px; }
.footer-social a {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.08);
    border-radius: 8px;
    color: rgba(255,255,255,0.6);
    font-size: 14px;
    transition: background 0.2s, color 0.2s;
}
.footer-social a:hover { background: var(--primary); color: #fff; }

/* ===== Responsive ===== */
@media (max-width: 1199px) {
    .hero-title { font-size: 40px; }
    .stat-value { font-size: 48px; }
    .stat-item:nth-child(1) { flex-basis: 20%; }
    .stat-item:nth-child(2) { flex-basis: 30%; }
    .stat-item:nth-child(3) { flex-basis: 20%; }
    .stat-item:nth-child(4) { flex-basis: 30%; }
}
@media (max-width: 991px) {
    .section { padding: 64px 0; }
    .nav-menu { display: none; }
    .nav-right .btn-primary-custom { display: none; }
    .search-wrap { display: none; }
    .menu-toggle { display: flex; }
    .hero-inner { padding: 40px 0 60px; }
    .hero-content-col { padding-right: 0; margin-bottom: 40px; }
    .hero-title { font-size: 36px; }
    .hero-float-badge { left: 8px; }
    .stats-row { flex-wrap: wrap; }
    .stat-item:nth-child(-n+2) { flex: 0 0 50%; }
    .stat-item:nth-child(3) { flex: 0 0 50%; }
    .stat-item:nth-child(4) { flex: 0 0 50%; }
    .case-offset { margin-top: 0; }
    .service-card-media { min-height: 180px; }
    .solution-img-wrap img { height: 240px; }
    .solution-block { margin-bottom: 56px; }
}
@media (max-width: 767px) {
    .section { padding: 48px 0; }
    .hero-title { font-size: 32px; }
    .hero-subtitle { font-size: 16px; }
    .hero-actions .btn-primary-custom, .hero-actions .btn-outline-custom { width: 100%; }
    .stat-value { font-size: 38px; }
    .stat-label { font-size: 13px; }
    .feature-badge { padding: 16px 10px; }
    .case-card-media img { height: 200px !important; }
    .news-card { flex-direction: column; }
    .news-thumb { flex: 0 0 auto; height: 140px; width: 100%; }
    .news-thumb img { height: 100%; }
    .cta-title { font-size: 22px; }
    .cta-card { padding: 24px; }
    .footer-col { margin-bottom: 28px; }
    .section-title { font-size: 28px; }
    .brand { font-size: 16px; }
}
@media (max-width: 575px) {
    .service-card-media { min-height: 160px; }
    .solution-title { font-size: 22px; }
    .stats-row { gap: 12px; }
    .stat-item:nth-child(n) { flex: 0 0 50%; }
    .stat-value { font-size: 34px; }
    .hero-badge { font-size: 12px; }
    .hero-trust { gap: 16px; }
}

/* roulang page: category1 */
:root {
            --primary: #EA580C;
            --primary-hover: #C2410C;
            --primary-soft: #FFF4ED;
            --bg-dark: #1C1917;
            --bg-light: #F5F3EF;
            --surface: #FFFFFF;
            --text-main: #292524;
            --text-sub: #78716C;
            --border: #E7E5E4;
            --accent-green: #059669;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 8px;
            --shadow-card: 0 2px 8px rgba(28,25,23,0.04);
            --shadow-hover: 0 12px 32px rgba(234,88,12,0.10);
            --transition: 0.2s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background: var(--bg-light);
            color: var(--text-main);
            line-height: 1.75;
            font-size: 15px;
        }

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

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

        .container {
            max-width: 1320px;
        }

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            background: var(--primary);
            color: #fff;
            border: 1.5px solid var(--primary);
            border-radius: 10px;
            padding: 10px 26px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: all 0.2s ease;
            cursor: pointer;
        }
        .btn-primary-custom:hover {
            background: var(--primary-hover);
            border-color: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-primary-custom:active {
            transform: translateY(-1px) scale(0.99);
        }
        .btn-primary-custom:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            box-shadow: 0 0 0 3px rgba(234,88,12,0.12);
        }

        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            border-radius: 10px;
            padding: 10px 26px;
            font-size: 15px;
            font-weight: 600;
            transition: all 0.2s ease;
            cursor: pointer;
        }
        .btn-outline-custom:hover {
            background: var(--primary-soft);
            color: var(--primary-hover);
            transform: translateY(-2px);
        }
        .btn-outline-custom:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .section {
            padding: 80px 0;
        }

        .section-heading {
            max-width: 620px;
            margin-bottom: 44px;
        }
        .section-heading .section-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 999px;
            background: var(--primary-soft);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            margin-bottom: 10px;
        }
        .section-heading h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-main);
            margin: 0 0 10px;
            line-height: 1.3;
            letter-spacing: 0.01em;
        }
        .section-heading .section-desc {
            font-size: 15px;
            color: var(--text-sub);
            margin: 0;
            line-height: 1.7;
        }
        .section-heading.light h2 {
            color: #fff;
        }
        .section-heading.light .section-desc {
            color: #A8A29E;
        }

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 64px;
            background: rgba(28, 25, 23, 0.92);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid transparent;
            transition: height 0.25s ease, border-color 0.25s ease;
        }
        .site-header.scrolled {
            height: 56px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .nav-left {
            display: flex;
            align-items: center;
            gap: 34px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            white-space: nowrap;
        }
        .brand-icon {
            display: inline-flex;
            flex-shrink: 0;
        }
        .brand .highlight,
        .footer-brand .highlight {
            color: var(--primary);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 26px;
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .nav-link-custom {
            position: relative;
            color: rgba(255, 255, 255, 0.82);
            font-size: 15px;
            padding: 6px 0;
            display: inline-flex;
            align-items: center;
            transition: color 0.2s ease;
        }
        .nav-link-custom:hover {
            color: #fff;
        }
        .nav-link-custom.active {
            color: #fff;
        }
        .nav-link-custom.active::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 100%;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-wrap {
            position: relative;
            display: flex;
            align-items: center;
        }
        .search-wrap .fa-search {
            position: absolute;
            left: 12px;
            color: #A8A29E;
            font-size: 14px;
            pointer-events: none;
            z-index: 1;
        }
        .search-input {
            width: 140px;
            padding: 8px 12px 8px 34px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 13px;
            transition: width 0.3s ease, border-color 0.3s ease, background 0.3s ease;
        }
        .search-input::placeholder {
            color: #A8A29E;
        }
        .search-input:focus {
            width: 180px;
            border-color: var(--primary);
            background: rgba(255, 255, 255, 0.12);
            outline: none;
        }
        .search-btn {
            display: none;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: transparent;
            color: #fff;
            font-size: 14px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background 0.2s ease;
        }
        .search-btn:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 4px;
            background: transparent;
            border: none;
            padding: 8px;
            cursor: pointer;
            position: relative;
            z-index: 1050;
        }
        .menu-toggle span {
            width: 22px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: flex-end;
            padding: 130px 0 64px;
            background: linear-gradient(135deg, rgba(28, 25, 23, 0.97) 0%, rgba(28, 25, 23, 0.88) 55%, rgba(234, 88, 12, 0.12) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -80px;
            left: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(234, 88, 12, 0.15), transparent 70%);
            pointer-events: none;
        }
        .page-hero-inner {
            position: relative;
            z-index: 2;
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            gap: 40px;
        }
        .breadcrumb-nav {
            font-size: 13px;
            color: #A8A29E;
            margin-bottom: 14px;
        }
        .breadcrumb-nav a {
            color: rgba(255, 255, 255, 0.55);
        }
        .breadcrumb-nav a:hover {
            color: var(--primary);
        }
        .breadcrumb-nav .divider {
            margin: 0 8px;
            color: rgba(255, 255, 255, 0.35);
        }
        .breadcrumb-nav .current {
            color: #fff;
        }
        .title-col .hero-tag {
            display: inline-block;
            padding: 4px 14px;
            border: 1px solid rgba(234, 88, 12, 0.55);
            border-radius: 999px;
            color: #EA580C;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            margin-bottom: 14px;
        }
        .page-hero h1 {
            font-size: 44px;
            font-weight: 800;
            color: #fff;
            margin: 0;
            line-height: 1.2;
        }
        .hero-sub {
            color: #A8A29E;
            font-size: 16px;
            margin-top: 10px;
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* ===== Features ===== */
        .features-section {
            background: var(--bg-light);
        }
        .feature-card {
            display: flex;
            background: #fff;
            border-radius: 16px;
            overflow: hidden;
            height: 100%;
            box-shadow: var(--shadow-card);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .feature-card-content {
            flex: 1;
            padding: 30px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .feature-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: var(--primary-soft);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 16px;
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin: 0 0 10px;
            color: var(--text-main);
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin: 0 0 18px;
        }
        .feature-link {
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color 0.2s ease;
        }
        .feature-link i {
            transition: transform 0.2s ease;
        }
        .feature-link:hover {
            color: var(--primary-hover);
        }
        .feature-link:hover i {
            transform: translateX(4px);
        }
        .feature-card-media {
            width: 42%;
            min-height: 220px;
            overflow: hidden;
            flex-shrink: 0;
        }
        .feature-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .feature-card:hover .feature-card-media img {
            transform: scale(1.04);
        }
        .feature-badge {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 20px 12px;
            background: #fff;
            border-radius: 12px;
            box-shadow: var(--shadow-card);
            color: var(--text-main);
            font-size: 14px;
            font-weight: 600;
            transition: box-shadow 0.25s ease, transform 0.25s ease;
        }
        .feature-badge i {
            color: var(--primary);
            font-size: 17px;
        }
        .feature-badge:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        /* ===== Scenes ===== */
        .scenes-section {
            background: #fff;
        }
        .scene-card {
            background: var(--bg-light);
            border-radius: 16px;
            overflow: hidden;
            height: 100%;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .scene-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .scene-img {
            height: 170px;
            overflow: hidden;
        }
        .scene-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .scene-card:hover .scene-img img {
            transform: scale(1.04);
        }
        .scene-body {
            padding: 24px;
        }
        .scene-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 8px;
        }
        .scene-body p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== Flow ===== */
        .flow-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .flow-section::before {
            content: '';
            position: absolute;
            right: -120px;
            top: -120px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(234, 88, 12, 0.20), transparent 70%);
            pointer-events: none;
        }
        .flow-section .container {
            position: relative;
            z-index: 2;
        }
        .flow-step {
            text-align: center;
            padding: 40px 24px;
            border-radius: 16px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            position: relative;
            height: 100%;
            transition: background 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
        }
        .flow-step:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(234, 88, 12, 0.35);
            transform: translateY(-4px);
        }
        .step-number {
            position: absolute;
            top: 16px;
            right: 22px;
            font-size: 14px;
            font-weight: 700;
            color: rgba(234, 88, 12, 0.55);
            letter-spacing: 0.06em;
        }
        .step-icon {
            width: 58px;
            height: 58px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), #F59E0B);
            color: #fff;
            font-size: 20px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            box-shadow: 0 0 24px rgba(234, 88, 12, 0.18);
        }
        .flow-step h3 {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            margin: 0 0 10px;
        }
        .flow-step p {
            color: #A8A29E;
            font-size: 13px;
            line-height: 1.7;
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-light);
        }
        .faq-accordion {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-accordion .accordion-item {
            border: 1px solid var(--border) !important;
            border-radius: 12px !important;
            margin-bottom: 14px;
            background: #fff;
            overflow: hidden;
        }
        .faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-color: var(--primary) !important;
            background: var(--primary-soft);
        }
        .faq-accordion .accordion-button {
            padding: 18px 52px 18px 20px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            background: #fff;
            border-radius: 12px !important;
            box-shadow: none !important;
            text-align: left;
        }
        .faq-accordion .accordion-button:hover {
            background: #fff;
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(234, 88, 12, 0.12) !important;
            border-color: var(--primary) !important;
            outline: none;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--text-main);
            background: var(--primary-soft);
        }
        .faq-accordion .accordion-button::after {
            content: '+';
            background-image: none;
            font-size: 22px;
            font-weight: 300;
            color: var(--primary);
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background-color: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.25s ease, background-color 0.25s ease, color 0.25s ease;
            position: absolute;
            right: 16px;
            top: 50%;
            transform: translateY(-50%);
        }
        .faq-accordion .accordion-button:not(.collapsed)::after {
            transform: translateY(-50%) rotate(45deg);
            background-color: var(--primary);
            color: #fff;
        }
        .faq-accordion .accordion-body {
            padding: 4px 20px 20px;
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
            border-top: 1px dashed var(--border);
            background: var(--primary-soft);
        }
        .faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)) .accordion-body {
            border-top-color: transparent;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(28, 25, 23, 0.97) 0%, rgba(28, 25, 23, 0.90) 60%, rgba(234, 88, 12, 0.16) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            position: relative;
            overflow: hidden;
        }
        .cta-inner {
            text-align: center;
            padding: 40px 0;
        }
        .cta-inner h2 {
            color: #fff;
            font-size: 28px;
            font-weight: 800;
            margin: 0 0 12px;
        }
        .cta-inner p {
            color: #A8A29E;
            font-size: 16px;
            margin: 0 0 30px;
            line-height: 1.6;
        }
        .cta-inner .btn-primary-custom {
            padding: 12px 38px;
            font-size: 16px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            padding: 64px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-desc {
            color: #A8A29E;
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 320px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: #A8A29E;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
        }
        .footer-social a:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #A8A29E;
            font-size: 14px;
            transition: color 0.2s ease, padding-left 0.2s ease;
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-contact li {
            color: #A8A29E;
            font-size: 14px;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-contact i {
            color: var(--primary);
            width: 18px;
            text-align: center;
            font-size: 14px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin-top: 40px;
            padding-top: 20px;
            text-align: center;
            color: #78716C;
            font-size: 13px;
        }
        .footer-bottom p {
            margin: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1199.98px) {
            .section {
                padding: 72px 0;
            }
            .feature-card {
                flex-direction: column;
            }
            .feature-card-media {
                width: 100%;
                min-height: 190px;
                order: -1;
            }
        }

        @media (max-width: 991.98px) {
            .section {
                padding: 64px 0;
            }
            .page-hero {
                padding: 120px 0 52px;
                min-height: 300px;
            }
            .page-hero h1 {
                font-size: 36px;
            }
            .page-hero-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 18px;
            }
            .section-heading h2 {
                font-size: 28px;
            }

            .nav-menu {
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(28, 25, 23, 0.98);
                flex-direction: column;
                align-items: center;
                justify-content: center;
                gap: 18px;
                z-index: 1040;
                opacity: 0;
                visibility: hidden;
                transition: opacity 0.3s ease, visibility 0.3s ease;
                margin: 0;
                padding: 0;
                list-style: none;
            }
            body.menu-open .nav-menu {
                opacity: 1;
                visibility: visible;
            }
            .nav-menu li {
                margin: 10px 0;
            }
            .nav-menu .nav-link-custom {
                font-size: 24px;
                font-weight: 700;
                color: #fff;
                padding: 6px 12px;
            }
            .nav-menu .nav-link-custom.active::after {
                bottom: 0;
            }
            .nav-menu .nav-link-custom:hover {
                color: var(--primary);
            }

            .search-wrap {
                display: none;
            }
            .search-btn {
                display: inline-flex;
            }
            .menu-toggle {
                display: flex;
            }
            body.menu-open .menu-toggle span:nth-child(1) {
                transform: rotate(45deg) translate(5px, 5px);
            }
            body.menu-open .menu-toggle span:nth-child(2) {
                opacity: 0;
            }
            body.menu-open .menu-toggle span:nth-child(3) {
                transform: rotate(-45deg) translate(5px, -5px);
            }
            body.menu-open {
                overflow: hidden;
            }
        }

        @media (max-width: 767.98px) {
            .section {
                padding: 48px 0;
            }
            .page-hero {
                padding: 110px 0 44px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .hero-sub {
                font-size: 15px;
            }
            .section-heading h2 {
                font-size: 24px;
            }
            .cta-inner h2 {
                font-size: 24px;
            }
            .cta-inner p {
                font-size: 15px;
            }

            .feature-card-content {
                padding: 22px;
            }
            .feature-card-media {
                min-height: 160px;
            }
            .feature-badge {
                padding: 16px 10px;
                font-size: 13px;
            }
            .scene-body {
                padding: 18px;
            }
            .flow-step {
                padding: 30px 20px;
            }
        }

        @media (max-width: 575.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .feature-card-media {
                min-height: 140px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .cta-inner .btn-primary-custom {
                width: 100%;
                max-width: 280px;
            }
            .footer-social {
                margin-bottom: 0;
            }
            .footer-contact li {
                font-size: 13px;
            }
        }

        @media (max-width: 991.98px) {
            .search-btn {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .search-btn i {
                pointer-events: none;
            }
        }

        @media (max-width: 991.98px) {
            .nav-left {
                gap: 16px;
            }
            .brand {
                font-size: 16px;
            }
            .nav-right {
                gap: 8px;
            }
            .nav-right .btn-primary-custom {
                padding: 8px 18px;
                font-size: 14px;
            }
        }

        @media (max-width: 575.98px) {
            .nav-right .btn-primary-custom {
                display: none;
            }
        }

        @media (max-width: 575.98px) {
            .nav-left .brand {
                font-size: 15px;
            }
            .brand-icon svg {
                width: 26px;
                height: 26px;
            }
        }

/* roulang page: article */
:root{
    --primary:#EA580C;
    --primary-hover:#C2410C;
    --primary-soft:#FFF4ED;
    --bg-dark:#1C1917;
    --bg-light:#F5F3EF;
    --surface:#FFFFFF;
    --text-main:#292524;
    --text-sub:#78716C;
    --border:#E7E5E4;
    --radius-lg:16px;
    --radius-md:10px;
    --radius-pill:999px;
    --shadow-sm:0 2px 8px rgba(28,25,23,0.04);
    --shadow-hover:0 12px 32px rgba(234,88,12,0.10);
    --transition-base:0.2s ease;
    --transition-smooth:0.3s ease;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
    margin:0;
    font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
    background:var(--bg-light);
    color:var(--text-main);
    line-height:1.75;
    font-size:16px;
}
img{max-width:100%;height:auto;border:0;}
a{color:var(--primary);text-decoration:none;transition:color var(--transition-base);}
a:hover{color:var(--primary-hover);}
button{font-family:inherit;cursor:pointer;}
input,textarea{font-family:inherit;font-size:14px;}
h1,h2,h3,h4,h5,h6{line-height:1.3;color:var(--text-main);margin-top:0;}
ul,ol{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;box-shadow:0 0 0 3px rgba(234,88,12,0.12);border-radius:4px;}

/* ===== Header & Nav ===== */
.site-header{
    position:fixed;
    top:0;left:0;
    width:100%;
    height:64px;
    background:rgba(28,25,23,0.92);
    -webkit-backdrop-filter:blur(8px);
    backdrop-filter:blur(8px);
    z-index:1000;
    border-bottom:1px solid rgba(255,255,255,0.06);
    transition:height var(--transition-smooth),box-shadow var(--transition-smooth),background var(--transition-smooth);
}
.site-header.scrolled{
    height:56px;
    background:rgba(28,25,23,0.97);
    box-shadow:0 4px 20px rgba(0,0,0,0.3);
}
.nav-container{
    display:flex;
    align-items:center;
    justify-content:space-between;
    height:100%;
    padding-left:16px;
    padding-right:16px;
}
.nav-left{display:flex;align-items:center;gap:36px;}
.brand{
    display:inline-flex;
    align-items:center;
    gap:9px;
    font-size:18px;
    font-weight:700;
    color:#fff;
    letter-spacing:0.01em;
    white-space:nowrap;
}
.brand:hover{color:#fff;}
.brand .highlight{color:var(--primary);}
.brand-icon{display:inline-flex;flex-shrink:0;}
.brand-icon svg{width:30px;height:30px;display:block;}
.nav-menu{display:flex;align-items:center;list-style:none;margin:0;padding:0;gap:30px;}
.nav-link-custom{
    position:relative;
    display:inline-block;
    padding:8px 2px;
    color:rgba(255,255,255,0.72);
    font-size:15px;
    font-weight:400;
    transition:color var(--transition-base);
}
.nav-link-custom:hover{color:#fff;}
.nav-link-custom::after{
    content:'';
    position:absolute;
    left:0;right:100%;bottom:2px;
    height:2px;
    border-radius:2px;
    background:var(--primary);
    transition:right var(--transition-base);
}
.nav-link-custom:hover::after{right:0;}
.nav-link-custom.active{color:#fff;font-weight:600;}
.nav-link-custom.active::after{right:0;background:var(--primary);}
.nav-right{display:flex;align-items:center;gap:16px;}
.search-wrap{position:relative;}
.search-input{
    width:180px;
    height:36px;
    padding:0 14px 0 34px;
    border-radius:var(--radius-pill);
    border:1px solid rgba(255,255,255,0.14);
    background:rgba(255,255,255,0.07);
    color:#fff;
    font-size:13px;
    transition:width var(--transition-smooth),border-color var(--transition-smooth),background var(--transition-smooth);
}
.search-input::placeholder{color:rgba(255,255,255,0.42);}
.search-input:focus{
    width:220px;
    outline:none;
    border-color:var(--primary);
    background:rgba(255,255,255,0.12);
}
.search-wrap i{
    position:absolute;
    left:12px;top:50%;
    transform:translateY(-50%);
    color:rgba(255,255,255,0.5);
    font-size:13px;
    pointer-events:none;
}
.search-btn{
    display:none;
    width:36px;height:36px;
    border-radius:50%;
    background:rgba(255,255,255,0.1);
    border:none;
    color:#fff;
    font-size:14px;
    align-items:center;
    justify-content:center;
    transition:background var(--transition-base);
}
.search-btn:hover{background:rgba(255,255,255,0.18);}
.menu-toggle{
    display:none;
    flex-direction:column;
    justify-content:center;
    gap:5px;
    width:40px;height:40px;
    padding:10px;
    background:none;
    border:none;
}
.menu-toggle span{
    display:block;
    width:20px;height:2px;
    background:#fff;
    border-radius:2px;
    transition:transform var(--transition-smooth),opacity var(--transition-smooth);
}
.menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.menu-toggle.open span:nth-child(2){opacity:0;}
.menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.nav-cta-mobile{display:none;}

/* ===== Buttons ===== */
.btn-primary-custom{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    padding:10px 26px;
    background:var(--primary);
    color:#fff;
    border:none;
    border-radius:var(--radius-md);
    font-size:15px;
    font-weight:600;
    line-height:1.4;
    cursor:pointer;
    text-decoration:none;
    transition:background var(--transition-base),transform var(--transition-base),box-shadow var(--transition-base);
}
.btn-primary-custom:hover{
    background:var(--primary-hover);
    color:#fff;
    transform:translateY(-2px);
    box-shadow:0 8px 24px rgba(234,88,12,0.28);
}
.btn-primary-custom:active{
    transform:translateY(-1px);
    box-shadow:0 4px 12px rgba(234,88,12,0.2);
}

/* ===== Article Banner ===== */
.article-banner{
    position:relative;
    margin-top:64px;
    padding:56px 0 40px;
    background:var(--bg-dark) url('/assets/images/backpic/back-2.png') no-repeat center top / cover;
}
.article-banner::before{
    content:'';
    position:absolute;
    inset:0;
    background:linear-gradient(90deg,rgba(28,25,23,0.9) 0%,rgba(28,25,23,0.75) 55%,rgba(28,25,23,0.6) 100%);
}
.article-banner .container{position:relative;z-index:1;}
.breadcrumb-custom{
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:4px;
    font-size:13px;
    color:rgba(255,255,255,0.6);
}
.breadcrumb-custom a{color:rgba(255,255,255,0.72);transition:color var(--transition-base);}
.breadcrumb-custom a:hover{color:#fff;}
.breadcrumb-custom .sep{margin:0 8px;color:rgba(255,255,255,0.35);}
.breadcrumb-custom .current{
    color:#fff;
    font-weight:500;
    max-width:320px;
    white-space:nowrap;
    overflow:hidden;
    text-overflow:ellipsis;
}

/* ===== Article Main ===== */
.article-main{padding:56px 0 72px;}
.article-header{max-width:760px;margin:0 auto 36px;text-align:center;}
.article-header h1{
    font-size:36px;
    font-weight:800;
    line-height:1.3;
    letter-spacing:0.01em;
    color:var(--text-main);
    margin:0 0 16px;
}
.article-meta{
    display:flex;
    justify-content:center;
    align-items:center;
    flex-wrap:wrap;
    gap:10px 22px;
    color:var(--text-sub);
    font-size:13px;
}
.meta-item{display:inline-flex;align-items:center;gap:6px;}
.meta-item i{color:var(--primary);font-size:13px;}

/* ===== Article Content ===== */
.article-content{
    max-width:760px;
    margin:0 auto;
    background:var(--surface);
    padding:48px 56px;
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow-sm);
    border:1px solid rgba(231,229,228,0.5);
    overflow-wrap:break-word;
    word-wrap:break-word;
}
.article-content p:first-of-type{font-size:18px;}
.article-content p{
    font-size:16px;
    line-height:1.85;
    margin:0 0 1.5em;
    color:#3F3A36;
}
.article-content h2{
    font-size:26px;
    font-weight:700;
    margin:1.8em 0 0.8em;
    color:var(--text-main);
}
.article-content h3{
    font-size:20px;
    font-weight:700;
    margin:1.6em 0 0.6em;
    color:var(--text-main);
}
.article-content ul,.article-content ol{
    padding-left:1.5em;
    margin:0 0 1.5em;
}
.article-content li{margin-bottom:0.6em;}
.article-content blockquote{
    margin:1.6em 0;
    padding:16px 22px;
    border-left:4px solid var(--primary);
    background:var(--primary-soft);
    border-radius:0 10px 10px 0;
    color:var(--text-main);
}
.article-content img{
    border-radius:12px;
    margin:1.6em auto;
    display:block;
}
.article-content a{
    font-weight:500;
    text-decoration:underline;
    text-underline-offset:3px;
}
.article-content a:hover{
    color:var(--primary-hover);
    text-decoration:none;
}
.article-content code{
    background:#F5F5F4;
    color:#DC2626;
    padding:2px 8px;
    border-radius:4px;
    font-family:'SFMono-Regular',Consolas,monospace;
    font-size:14px;
}
.article-content pre{
    background:var(--bg-dark);
    color:#EDEDED;
    padding:22px 26px;
    border-radius:12px;
    overflow-x:auto;
    margin:1.6em 0;
    font-size:14px;
    line-height:1.7;
}
.article-content pre code{
    background:none;
    color:inherit;
    padding:0;
    font-size:14px;
}
.article-content table{
    width:100%;
    border-collapse:collapse;
    margin:1.6em 0;
    font-size:15px;
}
.article-content th,.article-content td{
    border:1px solid var(--border);
    padding:10px 14px;
    text-align:left;
}
.article-content th{
    background:#FAFAF9;
    font-weight:600;
    color:var(--text-main);
}

/* ===== Article Footer Meta ===== */
.article-footer-meta{
    max-width:760px;
    margin:28px auto 0;
    display:flex;
    justify-content:space-between;
    align-items:center;
    flex-wrap:wrap;
    gap:16px;
}
.article-tags{display:flex;flex-wrap:wrap;gap:10px;}
.tag-item{
    display:inline-block;
    padding:5px 14px;
    background:var(--primary-soft);
    color:var(--primary);
    font-size:12px;
    font-weight:500;
    border-radius:var(--radius-pill);
}
.back-link{
    display:inline-flex;
    align-items:center;
    gap:8px;
    color:var(--text-sub);
    font-size:14px;
    transition:color var(--transition-base),gap var(--transition-base);
}
.back-link:hover{
    color:var(--primary);
    gap:12px;
}

/* ===== Article Empty ===== */
.article-empty{
    text-align:center;
    padding:72px 24px;
}
.article-empty p{
    font-size:17px;
    color:var(--text-sub);
    margin-bottom:24px;
}

/* ===== Related Section ===== */
.related-section{
    background:var(--bg-light);
    padding:48px 0 80px;
}
.section-title{
    font-size:28px;
    font-weight:800;
    color:var(--text-main);
    margin-bottom:36px;
    padding-left:16px;
    border-left:4px solid var(--primary);
    line-height:1.3;
}
.related-card{
    display:block;
    height:100%;
    background:var(--surface);
    border-radius:var(--radius-lg);
    overflow:hidden;
    box-shadow:var(--shadow-sm);
    border:1px solid rgba(231,229,228,0.4);
    transition:transform var(--transition-smooth),box-shadow var(--transition-smooth);
}
.related-card:hover{
    transform:translateY(-5px);
    box-shadow:var(--shadow-hover);
}
.related-img{overflow:hidden;}
.related-card img{
    width:100%;
    height:170px;
    object-fit:cover;
    transition:transform 0.4s ease;
}
.related-card:hover img{transform:scale(1.05);}
.related-body{
    padding:18px 20px 20px;
}
.related-body h3{
    font-size:16px;
    font-weight:600;
    color:var(--text-main);
    margin:0 0 8px;
    line-height:1.4;
}
.related-body span{
    font-size:12px;
    color:var(--text-sub);
    display:flex;
    align-items:center;
    gap:6px;
}

/* ===== Footer ===== */
.site-footer{
    background:var(--bg-dark);
    padding:72px 0 0;
    color:rgba(255,255,255,0.6);
}
.footer-brand{
    display:flex;
    align-items:center;
    gap:8px;
    font-size:18px;
    font-weight:700;
    color:#fff;
    margin-bottom:14px;
}
.footer-brand .highlight{color:var(--primary);}
.footer-desc{
    font-size:14px;
    line-height:1.8;
    margin:0 0 20px;
    max-width:320px;
    color:rgba(255,255,255,0.55);
}
.footer-social{display:flex;gap:12px;}
.footer-social a{
    width:36px;height:36px;
    border-radius:50%;
    background:rgba(255,255,255,0.08);
    display:flex;
    align-items:center;
    justify-content:center;
    color:rgba(255,255,255,0.7);
    font-size:14px;
    transition:background var(--transition-base),color var(--transition-base),transform var(--transition-base);
}
.footer-social a:hover{
    background:var(--primary);
    color:#fff;
    transform:translateY(-2px);
}
.footer-title{
    font-size:15px;
    font-weight:600;
    color:#fff;
    margin:0 0 20px;
    letter-spacing:0.02em;
}
.footer-links,.footer-contact{
    list-style:none;padding:0;margin:0;
}
.footer-links li{margin-bottom:10px;}
.footer-links a{
    display:inline-flex;
    align-items:center;
    gap:6px;
    color:rgba(255,255,255,0.58);
    font-size:14px;
    transition:color var(--transition-base),transform var(--transition-base);
}
.footer-links a::before{
    content:'›';
    color:var(--primary);
    opacity:0;
    transform:translateX(-4px);
    transition:all var(--transition-base);
}
.footer-links a:hover{color:#fff;}
.footer-links a:hover::before{opacity:1;transform:translateX(0);}
.footer-contact li{
    display:flex;
    align-items:center;
    gap:10px;
    font-size:14px;
    margin-bottom:12px;
}
.footer-contact i{
    color:var(--primary);
    font-size:14px;
    width:18px;
    text-align:center;
}
.site-footer-bottom{
    border-top:1px solid rgba(255,255,255,0.08);
    margin-top:48px;
    padding:22px 0;
}
.site-footer-bottom p{
    margin:0;
    text-align:center;
    font-size:13px;
    color:rgba(255,255,255,0.35);
}

/* ===== Responsive ===== */
@media (max-width:1199px){
    .search-input{width:150px;}
    .search-input:focus{width:180px;}
}
@media (max-width:991px){
    .site-header{
        -webkit-backdrop-filter:none;
        backdrop-filter:none;
    }
    .article-banner{margin-top:56px;}
    .nav-menu{
        position:fixed;
        top:0;left:0;
        width:100%;height:100vh;
        background:rgba(28,25,23,0.98);
        -webkit-backdrop-filter:blur(12px);
        backdrop-filter:blur(12px);
        flex-direction:column;
        justify-content:center;
        align-items:center;
        gap:28px;
        z-index:998;
        opacity:0;
        visibility:hidden;
        transition:opacity 0.3s ease,visibility 0.3s ease;
    }
    .nav-menu.open{opacity:1;visibility:visible;}
    .nav-menu .nav-link-custom{
        font-size:22px;
        font-weight:600;
        color:rgba(255,255,255,0.85);
    }
    .nav-menu .nav-link-custom::after{display:none;}
    .nav-menu .nav-link-custom.active{color:var(--primary);}
    .nav-cta-mobile{display:block;margin-top:12px;}
    .menu-toggle{
        display:flex;
        position:relative;
        z-index:1001;
    }
    .search-wrap{
        display:none;
        position:absolute;
        top:68px;left:16px;right:16px;
        z-index:1002;
    }
    .search-wrap.mobile-open{
        display:block;
    }
    .search-wrap.mobile-open .search-input{
        width:100%;
        background:var(--bg-dark);
        border-color:var(--primary);
    }
    .search-btn{display:flex;}
    .nav-right .btn-primary-custom{padding:8px 16px;font-size:14px;}
}
@media (max-width:767px){
    .article-banner{padding:40px 0 28px;}
    .article-header h1{font-size:28px;}
    .article-meta{flex-direction:column;gap:8px;}
    .article-content{padding:28px 22px;}
    .section-title{font-size:24px;margin-bottom:28px;}
    .article-footer-meta{justify-content:center;}
}
@media (max-width:575px){
    .site-header{height:56px;}
    .brand{font-size:16px;}
    .brand-icon svg{width:26px;height:26px;}
    .nav-container{padding-left:12px;padding-right:12px;}
    .nav-right .btn-primary-custom{display:none;}
    .article-header h1{font-size:24px;}
    .article-content{padding:24px 16px;}
    .article-content p{font-size:15px;}
    .related-body h3{font-size:15px;}
    .related-card img{height:140px;}
    .footer-col{margin-bottom:8px;}
}

/* roulang page: category2 */
/* ===================== 设计变量 ===================== */
        :root {
            --primary: #EA580C;
            --primary-hover: #C2410C;
            --primary-soft: #FFF4ED;
            --bg-dark: #1C1917;
            --bg-light: #F5F3EF;
            --surface: #FFFFFF;
            --text-main: #292524;
            --text-sub: #78716C;
            --border: #E7E5E4;
            --green: #059669;
            --shadow-sm: 0 2px 8px rgba(28,25,23,0.04);
            --shadow-md: 0 12px 32px rgba(234,88,12,0.10);
            --shadow-lg: 0 8px 40px rgba(28,25,23,0.08);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-pill: 999px;
            --font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
            --transition: all 0.25s ease;
        }

        /* ===================== 基础 Reset ===================== */
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
        body {
            font-family: var(--font-family);
            background: var(--bg-light);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        a:hover { color: var(--primary); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select, textarea { font-family: inherit; }
        ul { list-style: none; padding-left: 0; margin-bottom: 0; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; }
        .container { max-width: 1320px; width: 100%; padding-left: 16px; padding-right: 16px; margin-left: auto; margin-right: auto; }

        /* 焦点可见性 */
        a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            box-shadow: 0 0 0 3px rgba(234,88,12,0.12);
        }

        /* ===================== 按钮 ===================== */
        .btn-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 26px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 15px;
            border: 1.5px solid transparent;
            transition: var(--transition);
            cursor: pointer;
            line-height: 1.4;
            white-space: nowrap;
        }
        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary-custom:hover {
            background: var(--primary-hover);
            border-color: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(234,88,12,0.2);
        }
        .btn-primary-custom:active { transform: translateY(0); }
        .btn-outline-custom {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline-custom:hover {
            background: var(--primary-soft);
            color: var(--primary-hover);
            border-color: var(--primary-hover);
            transform: translateY(-2px);
        }
        .btn-outline-light-custom {
            background: transparent;
            border-color: rgba(255,255,255,0.5);
            color: #fff;
        }
        .btn-outline-light-custom:hover {
            background: rgba(255,255,255,0.1);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-lg-custom { padding: 13px 32px; font-size: 16px; }

        /* ===================== 导航 ===================== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 64px;
            z-index: 1000;
            background: rgba(28,25,23,0.92);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transition: height 0.3s ease;
        }
        .site-header.scrolled { height: 56px; }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .nav-left { display: flex; align-items: center; gap: 32px; }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.01em;
        }
        .brand .highlight { color: var(--primary); }
        .brand-icon { width: 32px; height: 32px; flex-shrink: 0; display: inline-flex; }
        .nav-menu { display: flex; align-items: center; gap: 6px; }
        .nav-link-custom {
            position: relative;
            display: inline-block;
            padding: 8px 14px;
            color: rgba(255,255,255,0.85);
            font-size: 15px;
            border-radius: 6px;
            transition: var(--transition);
        }
        .nav-link-custom::after {
            content: '';
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.25s ease;
        }
        .nav-link-custom:hover { color: #fff; }
        .nav-link-custom:hover::after { transform: scaleX(1); }
        .nav-link-custom.active { color: #fff; }
        .nav-link-custom.active::after { transform: scaleX(1); }
        .nav-right { display: flex; align-items: center; gap: 16px; }
        .search-wrap {
            display: flex;
            align-items: center;
            background: rgba(255,255,255,0.08);
            border-radius: var(--radius-pill);
            padding: 0 14px;
            gap: 8px;
            transition: var(--transition);
        }
        .search-wrap .fas { color: rgba(255,255,255,0.6); font-size: 13px; }
        .search-input {
            background: transparent;
            border: none;
            outline: none;
            color: #fff;
            font-size: 13px;
            width: 140px;
            padding: 7px 0;
        }
        .search-input::placeholder { color: rgba(255,255,255,0.45); }
        .search-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            border: none;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            display: none;
        }
        .search-btn:hover { background: rgba(255,255,255,0.15); }
        .menu-toggle {
            display: none;
            background: transparent;
            border: none;
            width: 36px;
            height: 36px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            cursor: pointer;
            position: relative;
            z-index: 1001;
        }
        .menu-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: var(--transition);
        }
        .menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
        .menu-toggle.open span:nth-child(2) { opacity: 0; }
        .menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

        /* 移动端导航 */
        .mobile-menu {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: rgba(28,25,23,0.98);
            backdrop-filter: blur(12px);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease;
        }
        .mobile-menu.open { opacity: 1; visibility: visible; }
        .mobile-menu .nav-menu-mobile {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 32px;
        }
        .mobile-menu .nav-link-custom {
            font-size: 24px;
            font-weight: 700;
            padding: 8px 20px;
            color: rgba(255,255,255,0.9);
        }
        .mobile-menu .nav-link-custom.active { color: var(--primary); }
        .mobile-menu .nav-link-custom::after { display: none; }
        .mobile-menu .btn-custom { margin-top: 12px; }

        /* ===================== Hero ===================== */
        .page-hero {
            position: relative;
            background: var(--bg-dark);
            min-height: 240px;
            display: flex;
            align-items: center;
            padding: 140px 0 80px;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -100px;
            left: calc(55% - 200px);
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(234,88,12,0.25), transparent 65%);
            pointer-events: none;
        }
        .page-hero .bg-grid {
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
                              linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
            background-size: 32px 32px;
            pointer-events: none;
        }
        .page-hero .container { position: relative; z-index: 2; }
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255,255,255,0.5);
            margin-bottom: 20px;
        }
        .breadcrumb-custom a { color: rgba(255,255,255,0.6); }
        .breadcrumb-custom a:hover { color: var(--primary); }
        .breadcrumb-custom .sep { color: rgba(255,255,255,0.3); }
        .breadcrumb-custom .current { color: #fff; }
        .page-hero h1 {
            font-size: 42px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .page-hero .hero-desc {
            font-size: 16px;
            color: rgba(255,255,255,0.7);
            max-width: 640px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.15);
            border-radius: var(--radius-pill);
            font-size: 13px;
            color: rgba(255,255,255,0.9);
            margin-bottom: 20px;
        }
        .hero-badge .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
        }

        /* ===================== 分区通用 ===================== */
        .section { padding: 96px 0; position: relative; }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.05em;
            color: var(--primary);
            text-transform: uppercase;
            padding: 5px 14px;
            border: 1px solid rgba(234,88,12,0.25);
            border-radius: var(--radius-pill);
            background: var(--primary-soft);
            margin-bottom: 16px;
        }
        .section-title {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 16px;
            line-height: 1.25;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.8;
            max-width: 720px;
        }
        .section-head { margin-bottom: 48px; }
        .section-head-center { text-align: center; }
        .section-head-center .section-desc { margin-left: auto; margin-right: auto; }

        /* ===================== 卡片 ===================== */
        .card-custom {
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card-custom:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(234,88,12,0.2);
        }
        .card-thumb {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: #e8e4e0;
        }
        .card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .card-custom:hover .card-thumb img { transform: scale(1.04); }
        .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            display: inline-block;
            padding: 3px 12px;
            background: rgba(28,25,23,0.75);
            backdrop-filter: blur(4px);
            color: #fff;
            font-size: 12px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.02em;
            z-index: 2;
        }
        .card-body-custom {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.4;
            margin-bottom: 10px;
        }
        .card-text {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .card-link i { transition: transform 0.25s ease; }
        .card-link:hover i { transform: translateX(4px); }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: #A8A29E;
            margin-bottom: 12px;
        }
        .card-meta span { display: inline-flex; align-items: center; gap: 4px; }

        /* ===================== 高手进阶卡网格 ===================== */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .tips-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .tips-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(234,88,12,0.2);
        }
        .tips-thumb {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: #e8e4e0;
        }
        .tips-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .tips-card:hover .tips-thumb img { transform: scale(1.04); }
        .tips-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 12px;
            background: rgba(28,25,23,0.75);
            color: #fff;
            font-size: 12px;
            border-radius: var(--radius-pill);
            z-index: 2;
        }
        .tips-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
        .tips-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
            line-height: 1.4;
        }
        .tips-desc {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .tips-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .tips-level {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-sub);
        }
        .tips-level .lv {
            display: inline-block;
            padding: 2px 10px;
            background: var(--primary-soft);
            color: var(--primary);
            border-radius: var(--radius-pill);
            font-weight: 600;
        }
        .tips-arrow {
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--primary-soft);
            color: var(--primary);
            font-size: 13px;
        }

        /* ===================== 功能 4 卡 ===================== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-item {
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
            height: 100%;
        }
        .feature-item:hover {
            border-color: rgba(234,88,12,0.3);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin: 0 auto 16px;
        }
        .feature-item h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .feature-item p {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.65;
            margin-bottom: 0;
        }

        /* ===================== 流程 ===================== */
        .process-section { background: var(--bg-dark); }
        .process-section .section-title { color: #fff; }
        .process-section .section-desc { color: rgba(255,255,255,0.7); }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            counter-reset: step;
        }
        .process-step {
            position: relative;
            padding: 32px 24px;
            background: rgba(255,255,255,0.05);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255,255,255,0.08);
            transition: var(--transition);
        }
        .process-step:hover {
            border-color: rgba(234,88,12,0.4);
            background: rgba(234,88,12,0.06);
        }
        .process-step::before {
            counter-increment: step;
            content: counter(step, decimal-leading-zero);
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            display: block;
            margin-bottom: 20px;
            letter-spacing: 0.1em;
        }
        .process-step h3 {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .process-step p {
            font-size: 14px;
            color: rgba(255,255,255,0.65);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* 深色区块光晕 */
        .process-section::before {
            content: '';
            position: absolute;
            top: 20%;
            right: -80px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(234,88,12,0.14), transparent 70%);
            pointer-events: none;
        }

        /* ===================== 数据 ===================== */
        .data-section { background: var(--bg-dark); }
        .data-wrap {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 48px;
        }
        .data-item { flex: 1; }
        .data-num {
            font-size: 64px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 8px;
            font-family: 'DIN Alternate', 'Arial Narrow', sans-serif;
        }
        .data-label {
            font-size: 14px;
            color: rgba(255,255,255,0.8);
            letter-spacing: 0.05em;
        }
        .data-item:nth-child(1) { flex: 1.2; }
        .data-item:nth-child(3) { flex: 1.3; }
        .data-item:nth-child(4) { flex: 1.2; }

        /* ===================== CTA ===================== */
        .cta-section {
            background: var(--bg-dark);
            padding: 96px 0;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 600px;
            height: 400px;
            background: radial-gradient(ellipse, rgba(234,88,12,0.16), transparent 65%);
            pointer-events: none;
        }
        .cta-inner { text-align: center; position: relative; z-index: 2; }
        .cta-inner h2 {
            font-size: 26px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-inner p {
            font-size: 16px;
            color: rgba(255,255,255,0.7);
            margin-bottom: 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-form-card {
            max-width: 680px;
            margin: 0 auto;
            background: rgba(255,255,255,0.08);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255,255,255,0.12);
            padding: 40px;
            border-radius: var(--radius-lg);
        }
        .cta-form-card .form-control,
        .cta-form-card .form-select {
            background: rgba(255,255,255,0.92);
            border: 1px solid rgba(255,255,255,0.2);
            border-radius: var(--radius-md);
            padding: 10px 14px;
            font-size: 14px;
            color: var(--text-main);
        }
        .cta-form-card .form-control:focus,
        .cta-form-card .form-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(234,88,12,0.12);
        }
        .cta-form-card .form-label {
            color: rgba(255,255,255,0.85);
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 6px;
        }

        /* ===================== FAQ ===================== */
        .faq-list { max-width: 760px; margin: 0 auto; }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 12px;
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item.active {
            border-color: var(--primary);
            background: var(--primary-soft);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            gap: 16px;
            transition: var(--transition);
        }
        .faq-question span {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
        }
        .faq-toggle {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 600;
            flex-shrink: 0;
            transition: transform 0.25s ease;
        }
        .faq-item.active .faq-toggle { transform: rotate(45deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.25s ease;
        }
        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        /* ===================== 页脚 ===================== */
        .site-footer {
            background: var(--bg-dark);
            padding: 64px 0 0;
            color: rgba(255,255,255,0.75);
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
            font-weight: 700;
            font-size: 20px;
            color: #fff;
        }
        .footer-brand .brand-icon { width: 28px; height: 28px; }
        .footer-desc {
            font-size: 14px;
            color: rgba(255,255,255,0.6);
            line-height: 1.8;
            margin-bottom: 20px;
            max-width: 320px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
            padding-bottom: 40px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.7);
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 12px;
        }
        .footer-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .footer-links li { margin-bottom: 10px; }
        .footer-links a, .footer-contact li {
            font-size: 14px;
            color: rgba(255,255,255,0.6);
            transition: var(--transition);
        }
        .footer-links a:hover { color: #fff; padding-left: 4px; }
        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 12px;
        }
        .footer-contact i {
            color: var(--primary);
            margin-top: 4px;
            font-size: 14px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding: 24px 0;
            margin-top: 40px;
            text-align: center;
            font-size: 14px;
            color: rgba(255,255,255,0.5);
        }
        .footer-bottom .brand-text {
            color: rgba(255,255,255,0.8);
            font-weight: 500;
        }

        /* ===================== 返回顶部 ===================== */
        .back-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 12px;
            font-size: 16px;
            cursor: pointer;
            z-index: 999;
            box-shadow: 0 8px 24px rgba(234,88,12,0.3);
            transition: var(--transition);
            opacity: 0;
            visibility: hidden;
        }
        .back-top.show { opacity: 1; visibility: visible; }
        .back-top:hover {
            background: var(--primary-hover);
            transform: translateY(-4px);
        }

        /* ===================== 加载更多 ===================== */
        .load-more-wrap { text-align: center; margin-top: 48px; }
        .load-more-wrap .btn-custom { min-width: 180px; }

        /* ===================== 响应式 ===================== */
        @media (max-width: 1199.98px) {
            .container { max-width: 100%; }
            .tips-grid { grid-template-columns: repeat(2, 1fr); }
            .feature-grid { grid-template-columns: repeat(2, 1fr); }
            .process-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
        }
        @media (max-width: 991.98px) {
            .section { padding: 64px 0; }
            .nav-menu { display: none; }
            .search-wrap { display: none; }
            .search-btn { display: flex; }
            .menu-toggle { display: flex; }
            .nav-right .btn-primary-custom { display: none; }
            .page-hero { padding: 140px 0 64px; }
            .page-hero h1 { font-size: 34px; }
            .section-title { font-size: 30px; }
            .data-wrap { flex-wrap: wrap; gap: 24px; }
            .data-item { flex: 1 1 30% !important; }
            .cta-form-card { padding: 28px 24px; }
            .site-footer { padding-top: 48px; }
            .footer-bottom { margin-top: 24px; }
        }
        @media (max-width: 767.98px) {
            .section { padding: 48px 0; }
            .page-hero { padding: 130px 0 56px; min-height: 220px; }
            .page-hero h1 { font-size: 28px; }
            .brand { font-size: 16px; }
            .nav-container { padding: 0 12px; }
            .section-title { font-size: 26px; }
            .section-head { margin-bottom: 32px; }
            .tips-grid { grid-template-columns: 1fr; gap: 16px; }
            .feature-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
            .data-num { font-size: 42px; }
            .process-grid { grid-template-columns: 1fr; gap: 16px; }
            .cta-inner h2 { font-size: 24px; }
            .cta-inner p { font-size: 15px; }
            .cta-form-card .btn-custom { width: 100%; }
            .card-custom { margin-bottom: 16px; }
            .back-top { bottom: 20px; right: 20px; width: 40px; height: 40px; }
        }
        @media (max-width: 575.98px) {
            .feature-grid { grid-template-columns: 1fr; }
            .data-item { flex: 1 1 45% !important; }
            .data-num { font-size: 36px; }
            .page-hero { padding: 120px 0 48px; }
            .breadcrumb-custom { font-size: 12px; flex-wrap: wrap; }
            .tips-body { padding: 20px; }
            .tips-title { font-size: 16px; }
            .card-body-custom { padding: 20px; }
            .load-more-wrap .btn-custom { width: 100%; }
        }