/* roulang page: index */
:root {
    --primary: #0F6B5C;
    --primary-hover: #0A4F44;
    --accent: #F5A83B;
    --accent-hover: #E08A0F;
    --coral: #E86A4A;
    --bg: #F7F5F0;
    --bg-light: #E7F2EE;
    --white: #FFFFFF;
    --dark: #102A26;
    --dark-card: #1D3A34;
    --title-color: #132B26;
    --text-color: #3A4A45;
    --muted-color: #71837C;
    --dark-text: #F0F5F2;
    --dark-muted: #A6BFB7;
    --border: #E4E0D8;
    --border-light: #EFEBE2;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 2px 8px rgba(16, 42, 38, 0.06);
    --shadow-md: 0 12px 28px rgba(16, 42, 38, 0.12);
    --shadow-float: 0 8px 20px rgba(15, 107, 92, 0.18);
    --font-head: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    --font-body: "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    --container-max: 1200px;
    --spacing-section: 96px;
}
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-body); font-size: 1rem; line-height: 1.75; color: var(--text-color); background: var(--bg); overflow-x: hidden; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: all .25s ease; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; }
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
.section-padding { padding: var(--spacing-section) 0; }
.text-center { text-align: center; }

/* ========== Header / Nav ========== */
.site-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid #E9E5DC;
}
.nav-wrap {
    display: flex; align-items: center; justify-content: space-between;
    height: 76px;
}
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-icon {
    width: 40px; height: 40px; border-radius: 10px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    display: flex; align-items: center; justify-content: center; color: #fff; font-size: 18px;
    box-shadow: var(--shadow-float);
}
.brand-name { font-family: var(--font-head); font-weight: 800; font-size: 1.2rem; color: var(--title-color); letter-spacing: .2px; white-space: nowrap; }
.nav-menu { display: flex; align-items: center; gap: 6px; margin: 0; list-style: none; }
.nav-menu li { margin: 0; }
.nav-link {
    display: inline-block; padding: 10px 16px; border-radius: var(--radius-sm);
    font-size: .95rem; font-weight: 500; color: var(--text-color); position: relative;
}
.nav-link:hover { color: var(--primary); background: rgba(15,107,92,.06); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after {
    content: ''; position: absolute; left: 16px; right: 16px; bottom: 2px;
    height: 3px; border-radius: 4px; background: var(--accent);
}
.nav-cta {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--primary); color: #fff; font-weight: 600;
    padding: 11px 24px; border-radius: 12px; font-size: .92rem;
    transition: all .25s ease;
}
.nav-cta:hover { background: var(--primary-hover); transform: translateY(-2px); box-shadow: var(--shadow-float); color: #fff; }
.hamburger { display: none; width: 44px; height: 44px; border-radius: 10px; align-items: center; justify-content: center; font-size: 20px; color: var(--title-color); border: 1px solid var(--border); }
.hamburger:hover { background: var(--bg-light); }

/* ========== Mobile Nav Drawer ========== */
.mobile-nav {
    display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100vh;
    background: rgba(255,255,255,.98); z-index: 200; padding: 24px;
    flex-direction: column; justify-content: center; align-items: center; gap: 12px;
    animation: fadeIn .3s ease;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
    display: block; padding: 14px 32px; font-size: 1.15rem; font-weight: 600;
    color: var(--title-color); border-radius: 12px; width: 100%; text-align: center;
}
.mobile-nav a:hover, .mobile-nav a.active { background: var(--bg-light); color: var(--primary); }
.mobile-nav-close { position: absolute; top: 22px; right: 24px; font-size: 24px; color: var(--title-color); width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; border-radius: 12px; }
.mobile-nav-close:hover { background: var(--bg-light); }

/* ========== Bottom Tab (mobile) ========== */
.mobile-tabbar {
    display: none; position: fixed; bottom: 0; left: 0; width: 100%; height: 60px;
    background: #ffffff; border-top: 1px solid var(--border);
    z-index: 100; align-items: center; justify-content: space-around;
    padding: 0 6px;
}
.mobile-tabbar.show { display: flex; }
.tab-item {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 2px; padding: 6px 10px; border-radius: 10px;
    color: var(--muted-color); font-size: .72rem; font-weight: 500;
    min-width: 52px; position: relative; transition: all .25s ease;
}
.tab-item svg { width: 22px; height: 22px; stroke-width: 1.8; }
.tab-item.active { color: var(--primary); font-weight: 600; }
.tab-item.active::before {
    content: ''; position: absolute; top: -1px; left: 50%; transform: translateX(-50%);
    width: 30px; height: 2px; background: var(--accent); border-radius: 4px;
}
.tab-item:hover { color: var(--primary); background: rgba(15,107,92,.06); }

/* ========== Hero ========== */
.hero {
    background: linear-gradient(135deg, #F7F5F0 0%, #E7F2EE 100%);
    position: relative; overflow: hidden; padding: 90px 0 70px;
}
.hero::before {
    content: ''; position: absolute; top: -80px; right: -80px; width: 320px; height: 320px;
    border-radius: 50%; background: radial-gradient(circle, rgba(15,107,92,.08) 0%, transparent 70%);
    pointer-events: none;
}
.hero::after {
    content: ''; position: absolute; bottom: -100px; left: 30%; width: 240px; height: 240px;
    border-radius: 50%; background: radial-gradient(circle, rgba(245,168,59,.08) 0%, transparent 70%);
    pointer-events: none;
}
.hero .container { position: relative; z-index: 2; }
.hero-grid { display: flex; align-items: center; gap: 56px; }
.hero-copy { flex: 1 1 50%; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(255,255,255,.8); border: 1px solid #d4e5df;
    padding: 8px 16px; border-radius: 999px; font-size: .82rem; font-weight: 500;
    color: var(--primary); margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}
.hero-badge i { font-size: .7rem; color: var(--accent); }
.hero-title {
    font-family: var(--font-head); font-size: clamp(2.4rem, 4vw, 3.5rem);
    line-height: 1.18; font-weight: 800; color: var(--title-color);
    margin-bottom: 22px; letter-spacing: -.5px;
}
.hero-title .highlight { color: var(--primary); position: relative; }
.hero-subtitle { font-size: 1.1rem; line-height: 1.75; color: #4A5E58; margin-bottom: 34px; max-width: 520px; }
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }
.btn-primary {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--primary); color: #fff; font-weight: 600;
    padding: 14px 32px; border-radius: 12px; font-size: .98rem;
    transition: all .25s ease;
}
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-2px); box-shadow: var(--shadow-float); color: #fff; }
.btn-secondary {
    display: inline-flex; align-items: center; gap: 8px;
    background: transparent; color: var(--primary); font-weight: 600;
    padding: 13px 30px; border-radius: 12px; font-size: .98rem;
    border: 1.5px solid var(--primary); transition: all .25s ease;
}
.btn-secondary:hover { background: rgba(15,107,92,.06); border-color: var(--primary-hover); color: var(--primary-hover); transform: translateY(-2px); }
.hero-stats { display: flex; gap: 20px; flex-wrap: wrap; }
.hero-stat { display: flex; align-items: center; gap: 12px; padding: 8px 18px; background: rgba(255,255,255,.7); border-radius: 999px; border: 1px solid #dce9e4; }
.hero-stat-icon { width: 34px; height: 34px; border-radius: 50%; background: var(--bg-light); display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 14px; }
.hero-stat-text { display: flex; flex-direction: column; line-height: 1.2; }
.hero-stat-num { font-weight: 800; font-size: 1rem; color: var(--title-color); font-feature-settings: "tnum"; }
.hero-stat-label { font-size: .76rem; color: var(--muted-color); }
.hero-media { flex: 1 1 45%; position: relative; }
.hero-media-img {
    border-radius: var(--radius-xl); overflow: hidden;
    box-shadow: var(--shadow-md); background-color: #DCEAE4;
    position: relative;
}
.hero-media-img img { width: 100%; height: 420px; object-fit: cover; }
.hero-media-img::after {
    content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 4px;
    background: var(--accent); border-radius: 4px;
}
.float-badge {
    position: absolute; background: #fff; border-radius: var(--radius-md);
    padding: 12px 18px; box-shadow: var(--shadow-float); display: flex; align-items: center; gap: 12px;
    animation: float 4s ease-in-out infinite; z-index: 3;
}
.float-badge.badge-1 { top: 32px; left: -24px; }
.float-badge.badge-2 { bottom: 36px; right: -12px; animation-delay: 1.5s; }
.float-badge-icon { width: 38px; height: 38px; border-radius: 10px; display: flex; align-items: center; justify-content: center; }
.float-badge-icon.green { background: rgba(15,107,92,.12); color: var(--primary); }
.float-badge-icon.amber { background: rgba(245,168,59,.16); color: var(--accent-hover); }
.float-badge-text { line-height: 1.3; }
.float-badge-num { font-size: 1.05rem; font-weight: 800; color: var(--title-color); font-feature-settings: "tnum"; }
.float-badge-label { font-size: .78rem; color: var(--muted-color); }
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

/* ========== Section Header ========== */
.section-header { max-width: 640px; margin-bottom: 48px; }
.section-header.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-subtitle {
    display: inline-block; font-size: .82rem; font-weight: 600; color: var(--primary);
    background: rgba(15,107,92,.08); padding: 6px 14px; border-radius: 999px;
    margin-bottom: 14px; letter-spacing: .5px;
}
.section-title { font-family: var(--font-head); font-size: clamp(1.8rem, 2.8vw, 2.5rem); font-weight: 700; color: var(--title-color); line-height: 1.3; margin-bottom: 14px; }
.section-desc { font-size: 1rem; color: var(--muted-color); line-height: 1.7; }

/* ========== Pain Points ========== */
.pain-section { background: var(--white); }
.pain-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.pain-card {
    background: #fff; border: 1px solid var(--border-light); border-radius: var(--radius-lg);
    padding: 28px 26px; box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--primary);
    transition: all .3s ease; position: relative;
}
.pain-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-left-color: var(--accent); }
.pain-card-icon { width: 48px; height: 48px; border-radius: 12px; background: var(--bg-light); display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 20px; margin-bottom: 16px; }
.pain-card h3 { font-size: 1.08rem; font-weight: 600; color: var(--title-color); margin-bottom: 8px; }
.pain-card p { font-size: .94rem; color: var(--muted-color); line-height: 1.65; margin: 0; }

/* ========== Solution ========== */
.solution-section {
    background: linear-gradient(145deg, #102A26 0%, #0E2E28 50%, #143B33 100%);
    padding: var(--spacing-section) 0; color: var(--dark-text);
}
.solution-section .section-title { color: var(--dark-text); }
.solution-section .section-desc { color: var(--dark-muted); }
.solution-section .section-subtitle { background: rgba(245,168,59,.15); color: var(--accent); }
.sol-row { display: flex; align-items: center; gap: 56px; margin-bottom: 64px; }
.sol-row:last-child { margin-bottom: 0; }
.sol-row.reverse { flex-direction: row-reverse; }
.sol-media { flex: 1 1 46%; }
.sol-media-img { border-radius: var(--radius-xl); overflow: hidden; position: relative; box-shadow: 0 20px 40px rgba(0,0,0,.3); background-color: var(--dark-card); }
.sol-media-img img { width: 100%; height: 300px; object-fit: cover; }
.sol-media-tag {
    position: absolute; top: 16px; left: 16px; background: var(--accent);
    color: var(--title-color); font-size: .76rem; font-weight: 700;
    padding: 6px 14px; border-radius: 999px; box-shadow: var(--shadow-sm);
}
.sol-copy { flex: 1 1 46%; }
.sol-copy h3 { font-size: 1.5rem; font-weight: 700; color: var(--dark-text); margin-bottom: 14px; line-height: 1.4; }
.sol-copy > p { color: var(--dark-muted); margin-bottom: 22px; font-size: .96rem; }
.feature-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 14px; }
.feature-list li { display: flex; align-items: flex-start; gap: 12px; font-size: .95rem; color: var(--dark-text); line-height: 1.6; }
.feature-dot { width: 22px; height: 22px; min-width: 22px; border-radius: 50%; background: rgba(245,168,59,.22); display: flex; align-items: center; justify-content: center; color: var(--accent); font-size: 10px; margin-top: 3px; }

/* ========== Results ========== */
.results-section { background: var(--bg); }
.results-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-bottom: 40px; }
.result-card {
    background: #fff; border-radius: var(--radius-lg); border: 1px solid var(--border-light);
    padding: 32px 28px; text-align: center; box-shadow: var(--shadow-sm);
    transition: all .3s ease; position: relative; overflow: hidden;
}
.result-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.result-card::before {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
}
.result-num { font-size: clamp(2.4rem, 4vw, 3rem); font-weight: 800; color: var(--primary); font-feature-settings: "tnum"; line-height: 1.2; }
.result-suffix { font-size: 1.4rem; font-weight: 700; color: var(--accent); }
.result-label { font-size: .9rem; color: var(--muted-color); margin-top: 8px; }
.chart-mini { display: flex; align-items: flex-end; gap: 8px; height: 44px; margin-top: 16px; justify-content: center; }
.chart-mini span { width: 18px; border-radius: 6px 6px 0 0; background: var(--primary); opacity: .75; transition: all .3s ease; }
.chart-mini span:nth-child(1) { height: 22px; }
.chart-mini span:nth-child(2) { height: 34px; }
.chart-mini span:nth-child(3) { height: 28px; }
.chart-mini span:nth-child(4) { height: 40px; background: var(--accent); opacity: 1; }
.result-card:hover .chart-mini span { opacity: 1; }

/* ========== Testimonials ========== */
.testi-section { background: var(--white); }
.testi-main {
    background: var(--bg-light); border-radius: var(--radius-lg);
    padding: 36px 40px; display: flex; align-items: center; gap: 28px;
    box-shadow: var(--shadow-sm); border: 1px solid #d9e9e3;
    max-width: 860px; margin: 0 auto 20px;
}
.testi-quote { flex-shrink: 0; width: 60px; height: 60px; border-radius: 16px; background: var(--primary); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 24px; }
.testi-main blockquote { margin: 0; font-size: 1.05rem; line-height: 1.8; color: var(--title-color); }
.testi-main blockquote footer { display: flex; align-items: center; gap: 12px; margin-top: 14px; font-size: .9rem; color: var(--muted-color); }
.testi-avatar { width: 44px; height: 44px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 14px; }
.testi-small-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; max-width: 860px; margin: 0 auto; }
.testi-small {
    background: #fff; border: 1px solid var(--border-light); border-radius: var(--radius-md);
    padding: 22px 24px; box-shadow: var(--shadow-sm); transition: all .3s ease;
}
.testi-small:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.testi-small blockquote { margin: 0; font-size: .92rem; color: var(--text-color); line-height: 1.7; }
.testi-small header { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.testi-small .name { font-weight: 600; font-size: .92rem; color: var(--title-color); }
.testi-small .role { font-size: .78rem; color: var(--muted-color); }

/* ========== FAQ ========== */
.faq-section { background: var(--bg); }
.faq-layout { display: grid; grid-template-columns: 5fr 7fr; gap: 48px; align-items: start; }
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
    background: #fff; border-radius: var(--radius-md); border: 1px solid var(--border-light);
    overflow: hidden; transition: all .3s ease; box-shadow: var(--shadow-sm);
}
.faq-item.open { border-color: #d5e3dd; box-shadow: var(--shadow-md); border-left: 3px solid var(--accent); }
.faq-question {
    width: 100%; display: flex; align-items: center; justify-content: space-between;
    padding: 18px 20px; font-size: 1.02rem; font-weight: 600; color: var(--title-color);
    text-align: left; transition: all .25s ease; gap: 16px;
}
.faq-question:hover { color: var(--primary); }
.faq-item.open .faq-question { color: var(--primary); }
.faq-icon {
    width: 32px; height: 32px; min-width: 32px; border-radius: 50%;
    background: var(--bg-light); display: flex; align-items: center; justify-content: center;
    position: relative; transition: all .3s ease;
}
.faq-icon::before, .faq-icon::after {
    content: ''; position: absolute; background: var(--primary); border-radius: 2px;
    transition: all .3s ease;
}
.faq-icon::before { width: 12px; height: 2px; }
.faq-icon::after { width: 2px; height: 12px; }
.faq-item.open .faq-icon { background: rgba(245,168,59,.18); }
.faq-item.open .faq-icon::after { transform: scaleY(0); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-answer-inner { padding: 0 20px 20px; font-size: .94rem; color: var(--muted-color); line-height: 1.7; }

/* ========== News / CMS ========== */
.news-section { background: var(--white); }
.news-header { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 40px; gap: 20px; }
.news-viewall {
    display: inline-flex; align-items: center; gap: 6px; font-size: .92rem; font-weight: 600;
    color: var(--primary); padding: 10px 18px; border-radius: 10px; border: 1px solid #cdddd6;
    transition: all .25s ease; white-space: nowrap;
}
.news-viewall:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.news-card {
    background: #fff; border: 1px solid var(--border-light); border-radius: var(--radius-lg);
    overflow: hidden; box-shadow: var(--shadow-sm); transition: all .3s ease;
    display: flex; flex-direction: column; height: 100%;
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: #CDE3DC; }
.news-card-media { position: relative; background-color: var(--bg-light); aspect-ratio: 16/9; overflow: hidden; }
.news-card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.news-card:hover .news-card-media img { transform: scale(1.04); }
.news-card-media-placeholder { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; background: var(--bg-light); color: var(--muted-color); font-size: .8rem; }
.news-card-body { padding: 20px 20px 22px; display: flex; flex-direction: column; flex: 1; }
.news-tag {
    display: inline-block; align-self: flex-start; background: var(--bg-light);
    color: var(--primary); font-size: .75rem; font-weight: 600;
    padding: 4px 12px; border-radius: 999px; margin-bottom: 12px;
}
.news-card h3 { font-size: 1.02rem; font-weight: 600; color: var(--title-color); line-height: 1.5; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card p { font-size: .86rem; color: var(--muted-color); line-height: 1.55; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card-meta { display: flex; align-items: center; justify-content: space-between; font-size: .78rem; color: var(--muted-color); margin-top: auto; padding-top: 12px; border-top: 1px solid var(--border-light); }
.news-card-meta a { color: var(--primary); font-weight: 500; font-size: .8rem; }
.news-card-meta a:hover { color: var(--primary-hover); }
.empty-state {
    grid-column: 1 / -1; text-align: center; padding: 60px 20px;
    background: var(--bg); border-radius: var(--radius-lg); border: 1px dashed var(--border);
}
.empty-icon { font-size: 38px; display: block; margin-bottom: 14px; color: var(--primary); }
.empty-state p { color: var(--muted-color); font-size: 1rem; }

/* ========== Final CTA ========== */
.cta-section { background: var(--bg); padding-bottom: var(--spacing-section); }
.cta-card {
    background: linear-gradient(135deg, #102A26 0%, #17473D 100%);
    border-radius: var(--radius-xl); padding: 64px 56px; position: relative; overflow: hidden;
    display: flex; align-items: center; justify-content: space-between; gap: 40px;
    box-shadow: 0 20px 50px rgba(16,42,38,.25);
}
.cta-card::before {
    content: ''; position: absolute; top: -80px; right: -60px; width: 260px; height: 260px;
    border-radius: 50%; background: radial-gradient(circle, rgba(245,168,59,.28) 0%, transparent 70%);
    pointer-events: none;
}
.cta-copy { position: relative; z-index: 2; max-width: 520px; }
.cta-copy h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); font-weight: 700; color: #fff; line-height: 1.35; margin-bottom: 14px; }
.cta-copy p { color: var(--dark-muted); font-size: .98rem; line-height: 1.65; }
.cta-actions { position: relative; z-index: 2; display: flex; flex-direction: column; gap: 14px; align-items: center; }
.btn-accent {
    display: inline-flex; align-items: center; gap: 10px;
    background: var(--accent); color: var(--title-color); font-weight: 700;
    padding: 16px 40px; border-radius: 12px; font-size: 1.02rem;
    transition: all .3s ease; box-shadow: 0 10px 24px rgba(245,168,59,.3);
}
.btn-accent:hover { background: var(--accent-hover); transform: translateY(-3px); color: var(--title-color); box-shadow: 0 14px 30px rgba(245,168,59,.4); }
.cta-contact-line { display: flex; align-items: center; gap: 10px; color: var(--dark-muted); font-size: .88rem; }
.cta-contact-line i { color: var(--accent); }

/* ========== Footer ========== */
.site-footer { background: var(--dark); color: var(--dark-text); padding: 60px 0 0; }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 44px; padding-bottom: 48px; }
.footer-brand .brand-name { color: #fff; }
.footer-brand .brand-icon { background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%); color: var(--title-color); }
.footer-desc { font-size: .9rem; color: var(--dark-muted); margin-top: 16px; max-width: 280px; line-height: 1.7; }
.footer-col h4 { font-size: .95rem; font-weight: 600; color: #fff; margin-bottom: 18px; letter-spacing: .5px; }
.footer-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: .9rem; color: var(--dark-muted); display: inline-flex; align-items: center; gap: 8px; }
.footer-col a:hover { color: var(--accent); }
.footer-contact-list li { display: flex; align-items: flex-start; gap: 12px; font-size: .9rem; color: var(--dark-muted); }
.footer-contact-list i { color: var(--accent); margin-top: 4px; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.08); padding: 22px 0;
    display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px;
}
.footer-bottom p { font-size: .82rem; color: var(--dark-muted); margin: 0; }
.back-top-btn {
    width: 42px; height: 42px; border-radius: 50%; background: rgba(255,255,255,.08);
    color: #fff; display: flex; align-items: center; justify-content: center;
    font-size: 16px; transition: all .3s ease;
}
.back-top-btn:hover { background: var(--accent); color: var(--title-color); transform: translateY(-3px); }

/* ========== Responsive ========== */
@media screen and (max-width: 1024px) and (min-width: 641px) {
    .nav-menu { display: none; }
    .hamburger { display: flex; }
    .nav-cta { display: none; }
    .news-grid { grid-template-columns: repeat(3, 1fr); }
    .sol-row, .sol-row.reverse { gap: 36px; }
    .sol-media-img img { height: 260px; }
    .faq-layout { grid-template-columns: 4fr 6fr; gap: 32px; }
    .footer-top { grid-template-columns: 1fr 1fr; }
}
@media screen and (max-width: 640px) {
    .section-padding { padding: 64px 0; }
    .nav-menu { display: none; }
    .nav-cta { display: none; }
    .hamburger { display: flex; }
    .mobile-tabbar { display: flex; }
    body { padding-bottom: 70px; }
    .hero { padding: 60px 0 50px; }
    .hero-grid { flex-direction: column; gap: 40px; }
    .hero-title { font-size: 1.7rem; }
    .hero-subtitle { font-size: .98rem; }
    .hero-btns { flex-direction: column; width: 100%; }
    .hero-btns .btn-primary, .hero-btns .btn-secondary { width: 100%; justify-content: center; padding: 15px 20px; }
    .hero-stats { flex-direction: column; gap: 10px; width: 100%; }
    .hero-stat { width: 100%; justify-content: flex-start; }
    .hero-media-img img { height: 240px; }
    .float-badge.badge-1 { left: 8px; top: 16px; }
    .float-badge.badge-2 { right: 8px; bottom: 16px; }
    .pain-grid { grid-template-columns: 1fr; }
    .sol-row, .sol-row.reverse { flex-direction: column; gap: 28px; }
    .sol-media-img img { height: 220px; }
    .sol-copy h3 { font-size: 1.25rem; }
    .results-grid { grid-template-columns: 1fr; gap: 16px; }
    .testi-main { flex-direction: column; padding: 24px; text-align: center; }
    .testi-quote { margin: 0 auto 12px; }
    .testi-main blockquote footer { justify-content: center; }
    .testi-small-grid { grid-template-columns: 1fr; }
    .faq-layout { grid-template-columns: 1fr; gap: 32px; }
    .news-header { flex-direction: column; align-items: flex-start; gap: 14px; }
    .news-grid { grid-template-columns: 1fr; gap: 16px; }
    .cta-card { flex-direction: column; padding: 40px 28px; text-align: center; }
    .cta-actions { width: 100%; }
    .btn-accent { width: 100%; justify-content: center; }
    .footer-top { grid-template-columns: 1fr; gap: 36px; }
    .news-card h3 { font-size: 1rem; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
    html { scroll-behavior: auto; }
}

/* roulang page: article */
:root {
  --primary: #0F6B5C;
  --primary-hover: #0A4F44;
  --accent: #F5A83B;
  --accent-hover: #E08A0F;
  --coral: #E86A4A;
  --bg-warm: #F7F5F0;
  --bg-white: #FFFFFF;
  --bg-dark: #102A26;
  --bg-dark-card: #1D3A34;
  --text-head: #132B26;
  --text-body: #3A4A45;
  --text-muted: #71837C;
  --text-white: #F0F5F2;
  --text-white-muted: #A6BFB7;
  --border: #E4E0D8;
  --border-light: #EFEBE2;
  --border-hover: #CDE3DC;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --radius-hero: 28px;
  --shadow-card: 0 2px 8px rgba(16,42,38,0.06);
  --shadow-hover: 0 12px 28px rgba(16,42,38,0.12);
  --shadow-badge: 0 8px 20px rgba(15,107,92,0.18);
  --font-head: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-body: "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font-body); background: var(--bg-warm); color: var(--text-body); line-height: 1.75; overflow-x: hidden; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .25s ease, background .25s ease, border-color .25s ease, box-shadow .25s ease, transform .25s ease, opacity .25s ease; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.grid-x { margin: 0; }
.cell { padding: 0; }

/* ===== Buttons ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 32px; border-radius: 12px; font-weight: 600; font-size: 0.95rem; line-height: 1.4; border: 2px solid transparent; transition: all 0.25s ease; min-height: 46px; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-2px); box-shadow: 0 8px 16px rgba(15,107,92,0.25); }
.btn-outline { background: transparent; border-color: var(--primary); color: var(--primary); }
.btn-outline:hover { background: rgba(15,107,92,0.05); transform: translateY(-2px); }
.btn-accent { background: var(--accent); color: var(--text-head); }
.btn-accent:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(245,168,59,0.3); }
.btn-sm { padding: 8px 18px; font-size: 0.875rem; min-height: 38px; border-radius: 10px; }

/* ===== Header / Nav ===== */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.92); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid #E9E5DC; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 76px; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-head); font-size: 1.25rem; font-weight: 800; color: var(--text-head); white-space: nowrap; }
.brand-icon { width: 36px; height: 36px; border-radius: 10px; background: linear-gradient(135deg, var(--primary) 0%, #1B8D7A 100%); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 1rem; flex-shrink: 0; }
.nav-menu { display: flex; align-items: center; gap: 32px; }
.nav-menu a { font-size: 0.92rem; font-weight: 500; color: var(--text-body); position: relative; padding: 6px 2px; letter-spacing: 0.02em; }
.nav-menu a::after { content: ""; position: absolute; left: 0; bottom: -2px; width: 0; height: 3px; border-radius: 4px; background: var(--primary); transition: width .3s ease; }
.nav-menu a:hover { color: var(--primary); }
.nav-menu a:hover::after { width: 100%; }
.nav-menu a.active { color: var(--primary); font-weight: 600; }
.nav-menu a.active::after { width: 100%; }
.nav-cta { padding: 10px 24px; font-size: 0.875rem; min-height: 40px; }
.nav-toggle { display: none; width: 44px; height: 44px; border-radius: 10px; align-items: center; justify-content: center; border: 1px solid var(--border); color: var(--text-head); font-size: 1.2rem; }

/* Mobile drawer */
.mobile-drawer { position: fixed; top: 0; right: -100%; width: 300px; height: 100%; background: #fff; z-index: 200; box-shadow: -20px 0 40px rgba(16,42,38,0.15); transition: right .35s ease; padding: 90px 30px 30px; display: flex; flex-direction: column; gap: 8px; }
.mobile-drawer.open { right: 0; }
.mobile-drawer a { padding: 12px 14px; border-radius: 10px; font-size: 1rem; font-weight: 500; color: var(--text-head); }
.mobile-drawer a:hover { background: rgba(15,107,92,0.06); color: var(--primary); }
.drawer-close { position: absolute; top: 18px; right: 20px; width: 40px; height: 40px; border-radius: 10px; background: var(--bg-warm); font-size: 1.1rem; color: var(--text-head); }}
.drawer-overlay { position: fixed; inset: 0; background: rgba(16,42,38,0.5); opacity: 0; visibility: hidden; transition: opacity .3s ease, visibility .3s ease; z-index: 190; }
.drawer-overlay.open { opacity: 1; visibility: visible; }

/* ===== Breadcrumb ===== */
.breadcrumb-wrap { background: var(--bg-warm); padding: 28px 0 10px; }
.breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 0.875rem; color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb i { font-size: 0.7rem; color: #C0C7C3; }
.breadcrumb .current { color: var(--text-body); font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 320px; }

/* ===== Article Banner ===== */
.article-banner { padding: 20px 0 32px; background: linear-gradient(180deg, var(--bg-warm) 0%, #FDFCF9 100%); }
.article-banner .container { max-width: 860px; }
.article-title { font-family: var(--font-head); font-size: clamp(1.7rem, 3vw, 2.6rem); line-height: 1.3; font-weight: 800; color: var(--text-head); margin: 16px 0 20px; letter-spacing: -0.01em; }
.article-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 18px; color: var(--text-muted); font-size: 0.875rem; }
.article-meta .meta-item { display: flex; align-items: center; gap: 6px; }
.article-meta i { color: var(--primary); font-size: 0.8rem; }
.article-meta .meta-cat { display: inline-flex; align-items: center; background: #EFF5F2; color: var(--primary); font-size: 0.75rem; font-weight: 600; padding: 4px 14px; border-radius: 999px; }

/* ===== Article Layout ===== */
.article-layout { padding: 10px 0 60px; }
.article-layout .container { max-width: 860px; }
.article-cover { border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 40px; box-shadow: var(--shadow-card); background: #E7F2EE; aspect-ratio: 16 / 9; position: relative; }
.article-cover img { width: 100%; height: 100%; object-fit: cover; }
.article-body-wrap { max-width: 760px; margin: 0 auto; }
.article-content { font-size: 1rem; line-height: 1.85; color: var(--text-body); }
.article-content > * { margin-bottom: 1.5em; }
.article-content h2 { font-family: var(--font-head); font-size: 1.5rem; font-weight: 700; color: var(--text-head); margin-top: 2em; margin-bottom: 0.8em; padding-bottom: 10px; border-bottom: 2px solid var(--border-hover); }
.article-content h3 { font-family: var(--font-head); font-size: 1.2rem; font-weight: 600; color: var(--text-head); margin-top: 1.8em; margin-bottom: 0.7em; }
.article-content p { margin-bottom: 1.5em; }
.article-content a { color: var(--primary); text-decoration: underline; text-decoration-color: rgba(15,107,92,0.3); text-underline-offset: 4px; }
.article-content a:hover { color: var(--accent-hover); }
.article-content ul, .article-content ol { margin: 0 0 1.5em; padding-left: 0; }
.article-content ul li { position: relative; padding-left: 24px; margin-bottom: 10px; }
.article-content ul li::before { content: ""; position: absolute; left: 4px; top: 0.65em; width: 8px; height: 8px; border-radius: 50%; background: var(--primary); }
.article-content ol { counter-reset: article-ol; }
.article-content ol li { counter-increment: article-ol; position: relative; padding-left: 34px; margin-bottom: 10px; }
.article-content ol li::before { content: counter(article-ol); position: absolute; left: 0; top: 0.2em; width: 24px; height: 24px; border-radius: 50%; background: #EFF5F2; color: var(--primary); font-size: 0.8rem; font-weight: 700; display: flex; align-items: center; justify-content: center; }
.article-content blockquote { margin: 1.8em 0; padding: 20px 24px; background: #F0F7F4; border-left: 4px solid var(--primary); border-radius: var(--radius-sm); color: var(--text-body); font-style: normal; }
.article-content blockquote p { margin-bottom: 0; }
.article-content img { border-radius: 12px; margin: 24px 0; }
.article-content code { background: #F0ECE3; color: var(--primary); padding: 3px 8px; border-radius: 6px; font-size: 0.9em; font-family: monospace; }
.article-content pre { background: var(--bg-dark); color: var(--text-white); padding: 20px; border-radius: 12px; overflow-x: auto; margin: 1.5em 0; }
.article-content table { width: 100%; border-collapse: collapse; margin: 1.5em 0; }
.article-content th, .article-content td { border: 1px solid var(--border); padding: 12px 16px; text-align: left; }
.article-content th { background: var(--bg-warm); font-weight: 600; color: var(--text-head); }

/* ===== Empty State ===== */
.article-empty { padding: 80px 20px; text-align: center; background: #fff; border-radius: var(--radius-lg); border: 1px dashed var(--border); }
.article-empty i { font-size: 2.5rem; color: #C0C7C3; margin-bottom: 16px; display: block; }
.article-empty p { font-size: 1.1rem; color: var(--text-muted); margin-bottom: 24px; }

/* ===== Tags ===== */
.article-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 40px; padding-top: 28px; border-top: 1px solid var(--border); }
.tag { display: inline-flex; align-items: center; background: #F0ECE3; color: var(--primary); font-size: 0.8rem; font-weight: 500; padding: 6px 16px; border-radius: 999px; transition: background .25s ease, color .25s ease; }
.tag:hover { background: var(--primary); color: #fff; }

/* ===== Related ===== */
.related-section { background: #fff; padding: 70px 0; border-top: 1px solid var(--border-light); border-bottom: 1px solid var(--border-light); }
.section-label { display: inline-flex; align-items: center; gap: 8px; font-size: 0.8rem; font-weight: 600; color: var(--primary); background: #EFF5F2; padding: 6px 16px; border-radius: 999px; margin-bottom: 16px; letter-spacing: 0.04em; }
.section-title { font-family: var(--font-head); font-size: clamp(1.7rem, 2.6vw, 2.2rem); font-weight: 700; color: var(--text-head); line-height: 1.3; margin-bottom: 16px; }
.section-subtitle { color: var(--text-muted); font-size: 0.95rem; max-width: 560px; margin-bottom: 40px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 36px; }
.related-card { display: flex; align-items: center; gap: 18px; background: #fff; border: 1px solid var(--border-light); border-radius: 16px; padding: 14px; box-shadow: var(--shadow-card); transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease; }
.related-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); border-color: var(--border-hover); }
.related-thumb { width: 92px; height: 72px; border-radius: 12px; overflow: hidden; background: #E7F2EE; flex-shrink: 0; }
.related-thumb img { width: 100%; height: 100%; object-fit: cover; }
.related-info { flex: 1; min-width: 0; }
.related-info h3 { font-size: 0.92rem; font-weight: 600; color: var(--text-head); line-height: 1.45; margin-bottom: 6px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-info h3:hover { color: var(--primary); }
.related-info time { font-size: 0.75rem; color: var(--text-muted); }
.back-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 44px; font-size: 0.9rem; font-weight: 600; color: var(--primary); }
.back-link:hover { color: var(--accent-hover); gap: 12px; }

/* ===== CTA ===== */
.cta-section { background: var(--bg-warm); padding: 70px 0; }
.cta-card { position: relative; background: linear-gradient(135deg, #102A26 0%, #17453D 100%); border-radius: var(--radius-hero); padding: 60px 50px; overflow: hidden; display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.cta-card::before { content: ""; position: absolute; right: -80px; top: -80px; width: 260px; height: 260px; border-radius: 50%; background: radial-gradient(circle, rgba(245,168,59,0.35) 0%, transparent 70%); }
.cta-card::after { content: ""; position: absolute; right: 120px; bottom: -120px; width: 220px; height: 220px; border-radius: 50%; background: radial-gradient(circle, rgba(245,168,59,0.15) 0%, transparent 70%); }
.cta-content { position: relative; z-index: 2; }
.cta-content h2 { font-family: var(--font-head); color: var(--text-white); font-size: clamp(1.5rem, 2.4vw, 2.1rem); font-weight: 700; margin-bottom: 14px; line-height: 1.3; }
.cta-content p { color: var(--text-white-muted); font-size: 0.95rem; max-width: 460px; }
.cta-actions { position: relative; z-index: 2; display: flex; gap: 16px; flex-shrink: 0; flex-wrap: wrap; }

/* ===== Footer ===== */
.site-footer { background: var(--bg-dark); color: var(--text-white-muted); padding: 70px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 50px; margin-bottom: 50px; }
.footer-brand .brand { color: #fff; margin-bottom: 16px; }
.footer-brand .brand-icon { background: var(--accent); color: var(--text-head); }
.footer-brand p { font-size: 0.88rem; color: var(--text-white-muted); line-height: 1.7; max-width: 260px; }
.footer-col h4 { color: #fff; font-size: 0.95rem; font-weight: 600; margin-bottom: 18px; font-family: var(--font-head); letter-spacing: 0.03em; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 0.88rem; color: var(--text-white-muted); }
.footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact li { display: flex; align-items: flex-start; gap: 10px; font-size: 0.88rem; margin-bottom: 12px; color: var(--text-white-muted); }
.footer-contact i { color: var(--accent); margin-top: 4px; width: 16px; text-align: center; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; padding-top: 28px; border-top: 1px solid rgba(255,255,255,0.08); font-size: 0.82rem; color: rgba(166,191,183,0.7); }
.back-top { width: 44px; height: 44px; border-radius: 50%; background: rgba(245,168,59,0.15); color: var(--accent); display: inline-flex; align-items: center; justify-content: center; font-size: 1.05rem; transition: background .25s ease, color .25s ease, transform .25s ease; }
.back-top:hover { background: var(--accent); color: var(--text-head); transform: translateY(-4px); }

/* ===== Mobile Tabbar ===== */
.mobile-tabbar { display: none; position: fixed; bottom: 0; left: 0; right: 0; height: 60px; background: #fff; border-top: 1px solid var(--border); z-index: 150; box-shadow: 0 -4px 20px rgba(16,42,38,0.06); }
.mobile-tabbar a { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px; font-size: 0.68rem; color: var(--text-muted); position: relative; }
.mobile-tabbar a i { font-size: 1.15rem; }
.mobile-tabbar a.active { color: var(--primary); font-weight: 600; }
.mobile-tabbar a.active::before { content: ""; position: absolute; top: 0; left: 50%; transform: translateX(-50%); width: 40px; height: 3px; border-radius: 4px; background: var(--accent); }

/* ===== Responsive ===== */
@media (min-width: 641px) {
  .mobile-drawer, .drawer-overlay { display: none !important; }
}
@media (max-width: 1024px) and (min-width: 641px) {
  .nav-menu { gap: 18px; }
  .nav-cta { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .related-grid { grid-template-columns: 1fr 1fr; }
  .cta-card { flex-direction: column; text-align: center; padding: 50px 30px; }
  .cta-content p { margin: 0 auto; }
}
@media (max-width: 640px) {
  .container { padding: 0 18px; }
  .nav-menu, .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .site-header { height: auto; }
  .header-inner { height: 64px; }
  .brand { font-size: 1.05rem; }
  .brand-icon { width: 32px; height: 32px; font-size: 0.85rem; }
  .breadcrumb-wrap { padding-top: 18px; }
  .breadcrumb .current { max-width: 180px; }
  .article-title { font-size: 1.45rem; margin: 12px 0 16px; }
  .article-meta { gap: 12px; font-size: 0.78rem; }
  .article-cover { border-radius: 16px; margin-bottom: 28px; }
  .article-layout { padding-bottom: 40px; }
  .related-grid { grid-template-columns: 1fr; gap: 16px; }
  .related-section { padding: 50px 0; }
  .cta-section { padding: 50px 0; }
  .cta-card { padding: 40px 24px; flex-direction: column; text-align: center; border-radius: 24px; }
  .cta-actions { flex-direction: column; width: 100%; }
  .cta-actions .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .site-footer { padding-top: 50px; }
  body { padding-bottom: 60px; }
  .mobile-tabbar { display: flex; }
  .footer-bottom { justify-content: center; text-align: center; }
}
@media (max-width: 480px) {
  .article-content { font-size: 0.95rem; }
  .container { padding: 0 16px; }
  .btn { width: 100%; }
  .related-card { padding: 12px; }
  .related-thumb { width: 80px; height: 64px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* roulang page: category1 */
:root{
            --primary:#0F6B5C;
            --primary-dark:#0A4F44;
            --accent:#F5A83B;
            --accent-dark:#E08A0F;
            --coral:#E86A4A;
            --bg:#F7F5F0;
            --bg-white:#FFFFFF;
            --bg-dark:#102A26;
            --bg-dark-card:#1D3A34;
            --text-head:#132B26;
            --text-body:#3A4A45;
            --text-muted:#71837C;
            --text-light:#F0F5F2;
            --text-light-muted:#A6BFB7;
            --border:#E4E0D8;
            --border-card:#EFEBE2;
            --border-soft:#CDE3DC;
            --radius-sm:8px;
            --radius-md:16px;
            --radius-lg:20px;
            --radius-xl:28px;
            --shadow-sm:0 2px 8px rgba(16,42,38,0.06);
            --shadow-md:0 12px 28px rgba(16,42,38,0.12);
            --font-head:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
            --font-body:"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
            --transition:all .25s ease-out;
        }
        *,*::before,*::after{box-sizing:border-box;}
        html,body{margin:0;padding:0;}
        body{
            font-family:var(--font-body);
            font-size:1rem;
            line-height:1.75;
            color:var(--text-body);
            background:var(--bg);
            overflow-x:hidden;
        }
        img{max-width:100%;height:auto;display:block;border:0;}
        a{color:inherit;text-decoration:none;transition:var(--transition);}
        ul{list-style:none;margin:0;padding:0;}
        button,input,textarea,select{font-family:inherit;font-size:inherit;line-height:inherit;}
        h1,h2,h3,h4,h5,h6{
            font-family:var(--font-head);
            color:var(--text-head);
            margin:0 0 .5em;
            line-height:1.3;
            font-weight:700;
        }
        .container{
            max-width:1200px;
            margin:0 auto;
            padding:0 24px;
        }
        .btn{
            display:inline-flex;
            align-items:center;
            justify-content:center;
            gap:8px;
            padding:14px 32px;
            border-radius:12px;
            font-weight:600;
            font-size:1rem;
            line-height:1.2;
            cursor:pointer;
            border:1.5px solid transparent;
            transition:var(--transition);
            min-height:48px;
            white-space:nowrap;
        }
        .btn-primary{
            background:var(--primary);
            color:#fff;
        }
        .btn-primary:hover,.btn-primary:focus{
            background:var(--primary-dark);
            transform:translateY(-2px);
            box-shadow:0 8px 16px rgba(15,107,92,.25);
        }
        .btn-outline{
            background:transparent;
            border-color:var(--primary);
            color:var(--primary);
        }
        .btn-outline:hover,.btn-outline:focus{
            background:rgba(15,107,92,.05);
            border-color:var(--primary-dark);
            color:var(--primary-dark);
            transform:translateY(-2px);
        }
        .btn-accent{
            background:var(--accent);
            color:var(--text-head);
            border-color:var(--accent);
        }
        .btn-accent:hover,.btn-accent:focus{
            background:var(--accent-dark);
            border-color:var(--accent-dark);
            box-shadow:0 8px 20px rgba(245,168,59,.3);
            transform:translateY(-2px);
        }
        .section{
            padding:88px 0;
        }
        .section-white{background:var(--bg-white);}
        .section-tint{background:var(--bg);}
        .section-head{
            max-width:720px;
            margin-bottom:56px;
        }
        .section-head.center{
            margin-left:auto;
            margin-right:auto;
            text-align:center;
        }
        .section-tag{
            display:inline-block;
            background:#EFF5F2;
            color:var(--primary);
            font-size:.75rem;
            font-weight:600;
            letter-spacing:.04em;
            padding:6px 16px;
            border-radius:999px;
            margin-bottom:16px;
            text-transform:uppercase;
        }
        .section-head h2{
            font-size:clamp(1.8rem,2.8vw,2.5rem);
            font-weight:800;
            line-height:1.2;
            margin-bottom:12px;
        }
        .section-head p{
            color:var(--text-muted);
            font-size:1.05rem;
            margin:0;
        }
        /* Header */
        .site-header{
            position:fixed;
            top:0;left:0;right:0;
            z-index:1000;
            background:rgba(255,255,255,.92);
            backdrop-filter:blur(12px);
            -webkit-backdrop-filter:blur(12px);
            border-bottom:1px solid #E9E5DC;
        }
        .site-header .container{
            display:flex;
            align-items:center;
            justify-content:space-between;
            height:76px;
            max-width:1280px;
        }
        .brand-logo{
            display:flex;
            align-items:center;
            gap:10px;
            font-family:var(--font-head);
            font-size:1.25rem;
            font-weight:800;
            color:var(--text-head);
            letter-spacing:.01em;
        }
        .brand-logo svg{
            width:34px;height:34px;
            flex:0 0 auto;
        }
        .brand-logo:hover{color:var(--primary);}
        .desktop-nav{
            display:flex;
            align-items:center;
        }
        .nav-menu{
            display:flex;
            align-items:center;
            gap:4px;
            margin:0;padding:0;
        }
        .nav-menu .nav-link{
            display:block;
            padding:10px 18px;
            font-weight:500;
            font-size:.95rem;
            color:var(--text-body);
            border-radius:10px;
            position:relative;
        }
        .nav-menu .nav-link:hover{
            color:var(--primary);
            background:rgba(15,107,92,.05);
        }
        .nav-menu .nav-link.active{
            color:var(--primary);
            font-weight:600;
        }
        .nav-menu .nav-link.active::after{
            content:"";
            position:absolute;
            left:18px;right:18px;bottom:4px;
            height:3px;
            border-radius:999px;
            background:var(--primary);
        }
        .nav-cta{
            padding:10px 24px;
            min-height:42px;
            margin-left:16px;
            font-size:.95rem;
        }
        .menu-toggle{
            display:none;
            background:none;
            border:none;
            font-size:1.5rem;
            color:var(--text-head);
            cursor:pointer;
            padding:8px;
            border-radius:8px;
            min-width:44px;
            min-height:44px;
        }
        .menu-toggle:hover{background:#F0ECE3;}
        .mobile-menu{
            display:none;
            background:#fff;
            border-top:1px solid var(--border);
            padding:16px 24px 24px;
        }
        .mobile-menu.open{display:block;}
        .mobile-menu .nav-menu{
            flex-direction:column;
            align-items:stretch;
            gap:8px;
        }
        .mobile-menu .nav-link{
            padding:14px 16px;
            border-radius:12px;
            font-weight:500;
        }
        .mobile-menu .nav-link.active{
            background:#EFF5F2;
            color:var(--primary);
            font-weight:600;
        }
        /* Hero */
        .page-hero{
            padding:140px 0 80px;
            background:linear-gradient(135deg,#F7F5F0 0%,#E7F2EE 100%);
            position:relative;
            overflow:hidden;
        }
        .page-hero::before{
            content:"";
            position:absolute;
            width:480px;height:480px;
            border-radius:50%;
            background:radial-gradient(circle,rgba(15,107,92,.08) 0%,transparent 70%);
            top:-80px;right:-80px;
            pointer-events:none;
        }
        .page-hero .grid-x{
            position:relative;
            z-index:2;
            gap:32px;
        }
        .breadcrumb{
            font-size:.875rem;
            color:var(--text-muted);
            margin-bottom:20px;
            display:flex;
            flex-wrap:wrap;
            gap:6px;
            align-items:center;
        }
        .breadcrumb a{
            color:var(--text-muted);
            padding:2px 0;
        }
        .breadcrumb a:hover{color:var(--primary);}
        .breadcrumb .sep{opacity:.5;}
        .breadcrumb .current{color:var(--text-body);font-weight:500;}
        .page-hero h1{
            font-size:clamp(2rem,3.4vw,2.9rem);
            font-weight:800;
            line-height:1.2;
            margin-bottom:20px;
            color:var(--text-head);
        }
        .page-hero .hero-lead{
            font-size:1.1rem;
            color:var(--text-body);
            max-width:520px;
            margin-bottom:32px;
            line-height:1.8;
        }
        .hero-actions{
            display:flex;
            flex-wrap:wrap;
            gap:14px;
            margin-bottom:40px;
        }
        .hero-metrics{
            display:flex;
            flex-wrap:wrap;
            gap:16px;
        }
        .metric-item{
            background:#fff;
            border:1px solid var(--border-card);
            border-radius:20px;
            padding:14px 22px;
            box-shadow:var(--shadow-sm);
            font-weight:700;
            font-size:.95rem;
            color:var(--text-head);
            display:flex;
            align-items:center;
            gap:10px;
        }
        .metric-item i{
            color:var(--accent);
            font-size:1.2rem;
        }
        .hero-visual{
            position:relative;
            border-radius:28px;
            overflow:hidden;
            box-shadow:var(--shadow-md);
            background-color:#E7F2EE;
            min-height:360px;
        }
        .hero-visual img{
            width:100%;
            height:100%;
            object-fit:cover;
            border-radius:28px;
        }
        .hero-visual::after{
            content:"";
            position:absolute;
            left:0;bottom:0;
            width:120px;height:8px;
            background:var(--accent);
            border-radius:0 8px 0 0;
        }
        .float-badge{
            position:absolute;
            top:24px;right:24px;
            background:#fff;
            border-radius:16px;
            padding:14px 20px;
            box-shadow:0 8px 20px rgba(15,107,92,.18);
            font-weight:700;
            font-size:.9rem;
            color:var(--text-head);
            animation:float 4s ease-in-out infinite;
            z-index:2;
            display:flex;
            align-items:center;
            gap:8px;
        }
        .float-badge i{color:var(--accent);font-size:1.1rem;}
        @keyframes float{
            0%,100%{transform:translateY(0);}
            50%{transform:translateY(-6px);}
        }
        /* Strength cards */
        .strength-grid{
            display:grid;
            grid-template-columns:1fr 1fr;
            gap:24px;
        }
        .strength-card{
            background:#fff;
            border:1px solid var(--border-card);
            border-radius:var(--radius-lg);
            padding:32px 28px;
            box-shadow:var(--shadow-sm);
            transition:var(--transition);
            position:relative;
            overflow:hidden;
        }
        .strength-card::before{
            content:"";
            position:absolute;
            left:0;top:0;bottom:0;
            width:4px;
            background:var(--primary);
            border-radius:0 4px 4px 0;
        }
        .strength-card:hover{
            box-shadow:var(--shadow-md);
            transform:translateY(-4px);
            border-color:var(--border-soft);
        }
        .strength-card .icon{
            width:56px;height:56px;
            border-radius:14px;
            background:#EFF5F2;
            color:var(--primary);
            display:flex;
            align-items:center;
            justify-content:center;
            font-size:1.4rem;
            margin-bottom:20px;
        }
        .strength-card h3{
            font-size:1.15rem;
            font-weight:700;
            margin-bottom:10px;
        }
        .strength-card p{
            color:var(--text-muted);
            font-size:.95rem;
            margin:0;
        }
        /* Service split */
        .service-block{
            display:flex;
            align-items:center;
            gap:48px;
            margin-bottom:80px;
        }
        .service-block:last-child{margin-bottom:0;}
        .service-block.reverse{flex-direction:row-reverse;}
        .service-image{
            flex:0 0 48%;
            border-radius:24px;
            overflow:hidden;
            background:#E7F2EE;
            box-shadow:var(--shadow-sm);
            min-height:280px;
        }
        .service-image img{
            width:100%;height:100%;
            object-fit:cover;
            border-radius:24px;
        }
        .service-content{
            flex:1;
        }
        .service-content .section-tag{margin-bottom:12px;}
        .service-content h3{
            font-size:1.6rem;
            margin-bottom:16px;
        }
        .service-content p{
            color:var(--text-body);
            margin-bottom:16px;
        }
        .service-list{
            margin-top:16px;
        }
        .service-list li{
            display:flex;
            align-items:flex-start;
            gap:10px;
            padding:8px 0;
            font-size:.95rem;
            color:var(--text-body);
        }
        .service-list li::before{
            content:"";
            width:8px;height:8px;
            border-radius:50%;
            background:var(--accent);
            flex:0 0 auto;
            margin-top:10px;
        }
        /* Stats */
        .stats-section{
            background:var(--bg-dark);
            padding:80px 0;
            color:var(--text-light);
        }
        .stats-section .section-head h2{
            color:#fff;
        }
        .stats-section .section-head p{
            color:var(--text-light-muted);
        }
        .stats-grid{
            display:grid;
            grid-template-columns:repeat(3,1fr);
            gap:24px;
            margin-top:40px;
        }
        .stat-card{
            background:var(--bg-dark-card);
            border-radius:var(--radius-lg);
            padding:36px 28px;
            text-align:center;
            border:1px solid rgba(255,255,255,.06);
        }
        .stat-card .stat-number{
            font-size:clamp(2.4rem,4vw,3rem);
            font-weight:800;
            color:var(--accent);
            font-feature-settings:"tnum";
            line-height:1.1;
            margin-bottom:8px;
        }
        .stat-card .stat-label{
            color:var(--text-light-muted);
            font-size:.9rem;
            letter-spacing:.02em;
        }
        .chart-bars{
            display:flex;
            align-items:flex-end;
            gap:12px;
            height:70px;
            margin-top:20px;
            justify-content:center;
        }
        .chart-bars span{
            width:18px;
            background:rgba(245,168,59,.5);
            border-radius:6px 6px 0 0;
            transition:var(--transition);
        }
        .chart-bars span:nth-child(1){height:30%;}
        .chart-bars span:nth-child(2){height:55%;background:rgba(245,168,59,.7);}
        .chart-bars span:nth-child(3){height:42%;}
        .chart-bars span:nth-child(4){height:75%;background:var(--accent);}
        .chart-bars span:nth-child(5){height:60%;}
        /* Scenes */
        .scene-grid{
            display:grid;
            grid-template-columns:repeat(4,1fr);
            gap:20px;
        }
        .scene-item{
            background:#fff;
            border:1px solid var(--border-card);
            border-radius:20px;
            padding:28px 20px;
            text-align:center;
            transition:var(--transition);
            box-shadow:var(--shadow-sm);
        }
        .scene-item:hover{
            transform:translateY(-4px);
            box-shadow:var(--shadow-md);
            border-color:var(--border-soft);
        }
        .scene-item .scene-icon{
            width:48px;height:48px;
            margin:0 auto 14px;
            border-radius:12px;
            background:#EFF5F2;
            color:var(--primary);
            display:flex;
            align-items:center;
            justify-content:center;
            font-size:1.2rem;
        }
        .scene-item h3{
            font-size:1rem;
            margin-bottom:8px;
        }
        .scene-item p{
            font-size:.85rem;
            color:var(--text-muted);
            margin:0;
        }
        /* Timeline */
        .timeline{
            display:grid;
            grid-template-columns:repeat(4,1fr);
            gap:24px;
            position:relative;
            margin-top:40px;
        }
        .timeline-step{
            background:#fff;
            border:1px solid var(--border-card);
            border-radius:20px;
            padding:28px 22px;
            position:relative;
            box-shadow:var(--shadow-sm);
        }
        .timeline-step .step-num{
            display:inline-flex;
            align-items:center;
            justify-content:center;
            width:36px;height:36px;
            border-radius:50%;
            background:var(--primary);
            color:#fff;
            font-weight:700;
            font-size:.9rem;
            margin-bottom:16px;
        }
        .timeline-step h3{
            font-size:1.05rem;
            margin-bottom:8px;
        }
        .timeline-step p{
            font-size:.9rem;
            color:var(--text-muted);
            margin:0;
        }
        /* Case cards */
        .case-grid{
            display:grid;
            grid-template-columns:1fr 1fr 1fr;
            gap:24px;
        }
        .case-card{
            background:#fff;
            border-radius:20px;
            overflow:hidden;
            border:1px solid var(--border-card);
            box-shadow:var(--shadow-sm);
            transition:var(--transition);
            display:flex;
            flex-direction:column;
        }
        .case-card:hover{
            box-shadow:var(--shadow-md);
            transform:translateY(-4px);
            border-color:var(--border-soft);
        }
        .case-card.featured{
            background:var(--primary);
            border-color:var(--primary);
        }
        .case-card.featured .case-body h3,
        .case-card.featured .case-body p{
            color:#fff;
        }
        .case-card.featured .case-button{
            color:var(--accent);
        }
        .case-image{
            height:180px;
            background:#E7F2EE;
            overflow:hidden;
        }
        .case-image img{
            width:100%;height:100%;
            object-fit:cover;
        }
        .case-body{
            padding:24px 22px;
            flex:1;
            display:flex;
            flex-direction:column;
        }
        .case-tag{
            display:inline-block;
            background:#EFF5F2;
            color:var(--primary);
            font-size:.75rem;
            font-weight:600;
            padding:4px 12px;
            border-radius:999px;
            margin-bottom:12px;
            align-self:flex-start;
        }
        .case-card.featured .case-tag{
            background:rgba(255,255,255,.15);
            color:#fff;
        }
        .case-body h3{
            font-size:1.1rem;
            margin-bottom:8px;
        }
        .case-body p{
            font-size:.9rem;
            color:var(--text-muted);
            flex:1;
            margin-bottom:16px;
        }
        .case-card.featured .case-body p{color:rgba(255,255,255,.85);}
        .case-button{
            font-weight:600;
            font-size:.9rem;
            color:var(--primary);
            display:inline-flex;
            align-items:center;
            gap:6px;
        }
        .case-button:hover{color:var(--primary-dark);}
        /* FAQ */
        .faq-layout{
            display:grid;
            grid-template-columns:1fr 1.4fr;
            gap:48px;
            align-items:start;
        }
        .faq-list{
            display:flex;
            flex-direction:column;
            gap:12px;
        }
        .faq-item{
            background:#fff;
            border:1px solid var(--border-card);
            border-radius:16px;
            overflow:hidden;
            transition:var(--transition);
        }
        .faq-item.open{
            border-left:3px solid var(--accent);
            box-shadow:var(--shadow-sm);
        }
        .faq-question{
            width:100%;
            background:none;
            border:none;
            padding:20px 22px;
            text-align:left;
            font-size:1.05rem;
            font-weight:600;
            color:var(--text-head);
            cursor:pointer;
            display:flex;
            justify-content:space-between;
            align-items:center;
            gap:12px;
            transition:var(--transition);
        }
        .faq-question:hover{color:var(--primary);}
        .faq-item.open .faq-question{color:var(--primary);}
        .faq-icon{
            width:28px;height:28px;
            border-radius:50%;
            background:#EFF5F2;
            position:relative;
            flex:0 0 auto;
        }
        .faq-icon::before,
        .faq-icon::after{
            content:"";
            position:absolute;
            background:var(--primary);
            border-radius:2px;
            transition:var(--transition);
        }
        .faq-icon::before{
            width:12px;height:2px;
            top:50%;left:50%;
            transform:translate(-50%,-50%);
        }
        .faq-icon::after{
            width:2px;height:12px;
            top:50%;left:50%;
            transform:translate(-50%,-50%);
        }
        .faq-item.open .faq-icon::after{
            transform:translate(-50%,-50%) rotate(90deg);
            opacity:0;
        }
        .faq-answer{
            max-height:0;
            overflow:hidden;
            transition:max-height .3s ease-out;
        }
        .faq-answer-inner{
            padding:0 22px 20px;
            color:var(--text-body);
            font-size:.95rem;
            line-height:1.75;
        }
        /* CTA */
        .cta-section{
            padding:60px 0 100px;
            background:var(--bg);
        }
        .cta-card{
            background:var(--bg-dark);
            border-radius:28px;
            padding:64px 48px;
            color:var(--text-light);
            position:relative;
            overflow:hidden;
            text-align:center;
        }
        .cta-card::before{
            content:"";
            position:absolute;
            width:240px;height:240px;
            border-radius:50%;
            background:rgba(245,168,59,.15);
            top:-60px;right:-60px;
            pointer-events:none;
        }
        .cta-card h2{
            color:#fff;
            font-size:clamp(1.8rem,2.8vw,2.4rem);
            margin-bottom:12px;
        }
        .cta-card p{
            color:var(--text-light-muted);
            margin:0 auto 32px;
            max-width:560px;
            font-size:1.05rem;
        }
        /* Footer */
        .site-footer{
            background:var(--bg-dark);
            color:var(--text-light-muted);
            padding:64px 0 24px;
        }
        .footer-grid{
            display:grid;
            grid-template-columns:1.4fr 1fr 1fr 1fr;
            gap:40px;
            margin-bottom:40px;
        }
        .footer-brand .brand-logo{
            color:#fff;
            margin-bottom:16px;
        }
        .footer-brand p{
            font-size:.9rem;
            line-height:1.7;
            margin:0;
        }
        .footer-col h4{
            color:#fff;
            font-size:1rem;
            margin-bottom:16px;
            font-weight:600;
        }
        .footer-col ul li{
            margin-bottom:10px;
        }
        .footer-col a{
            font-size:.9rem;
            color:var(--text-light-muted);
        }
        .footer-col a:hover{color:var(--accent);}
        .footer-bottom{
            border-top:1px solid rgba(255,255,255,.1);
            padding-top:20px;
            display:flex;
            justify-content:space-between;
            align-items:center;
            flex-wrap:wrap;
            gap:12px;
            font-size:.85rem;
        }
        /* Bottom tab */
        .bottom-tab{
            display:none;
            position:fixed;
            bottom:0;left:0;right:0;
            background:#fff;
            border-top:1px solid var(--border);
            z-index:2000;
            height:60px;
        }
        .bottom-tab .tab-list{
            display:flex;
            height:100%;
        }
        .bottom-tab .tab-item{
            flex:1;
            display:flex;
            flex-direction:column;
            align-items:center;
            justify-content:center;
            gap:3px;
            font-size:.7rem;
            color:var(--text-muted);
            border-top:2px solid transparent;
            transition:var(--transition);
            min-width:0;
        }
        .bottom-tab .tab-item svg{
            width:22px;height:22px;
            flex:0 0 auto;
        }
        .bottom-tab .tab-item.active{
            color:var(--primary);
            border-top-color:var(--accent);
            font-weight:600;
        }
        .bottom-tab .tab-item:hover{color:var(--primary);}
        /* Back to top */
        .back-to-top{
            position:fixed;
            right:24px;
            bottom:90px;
            width:44px;height:44px;
            border-radius:50%;
            background:var(--primary);
            color:#fff;
            border:none;
            cursor:pointer;
            font-size:1.1rem;
            display:flex;
            align-items:center;
            justify-content:center;
            opacity:0;
            visibility:hidden;
            transform:translateY(12px);
            transition:var(--transition);
            z-index:1500;
            box-shadow:0 4px 12px rgba(16,42,38,.2);
        }
        .back-to-top.show{
            opacity:1;
            visibility:visible;
            transform:translateY(0);
        }
        .back-to-top:hover{
            background:var(--primary-dark);
            transform:translateY(-4px);
        }
        /* Responsive */
        @media (max-width:1024px){
            .section{padding:70px 0;}
            .hero-visual{min-height:300px;}
            .timeline{grid-template-columns:1fr 1fr;}
            .scene-grid{grid-template-columns:1fr 1fr;}
            .case-grid{grid-template-columns:1fr 1fr;}
            .case-card.featured{transform:scale(1.02);}
            .footer-grid{grid-template-columns:1fr 1fr;}
        }
        @media (min-width:641px){
            .mobile-menu{display:none !important;}
        }
        @media (max-width:640px){
            .site-header .container{height:64px;}
            .desktop-nav{display:none;}
            .nav-cta{display:none;}
            .menu-toggle{display:inline-flex;align-items:center;justify-content:center;}
            .page-hero{padding:110px 0 60px;}
            .page-hero .grid-x{gap:24px;flex-direction:column-reverse;}
            .hero-visual{min-height:220px;margin-top:8px;}
            .hero-actions .btn{flex:1;justify-content:center;}
            .hero-metrics{flex-direction:column;gap:10px;}
            .metric-item{width:100%;}
            .strength-grid{grid-template-columns:1fr;}
            .service-block,
            .service-block.reverse{flex-direction:column;gap:24px;margin-bottom:56px;}
            .service-image{flex:none;width:100%;min-height:200px;}
            .stats-grid{grid-template-columns:1fr;}
            .scene-grid{grid-template-columns:1fr 1fr;gap:14px;}
            .timeline{grid-template-columns:1fr;}
            .case-grid{grid-template-columns:1fr;}
            .case-card.featured{transform:none;}
            .faq-layout{grid-template-columns:1fr;gap:28px;}
            .cta-card{padding:40px 24px;}
            .cta-card .btn{width:100%;}
            .footer-grid{grid-template-columns:1fr;gap:28px;}
            .footer-bottom{flex-direction:column;text-align:center;}
            .bottom-tab{display:block;}
            main,body{padding-bottom:70px;}
            .back-to-top{bottom:72px;right:16px;}
        }
        @media (prefers-reduced-motion:reduce){
            *{
                animation-duration:.01ms !important;
                animation-iteration-count:1 !important;
                transition-duration:.01ms !important;
            }
            html{scroll-behavior:auto;}
        }
        /* Foundation override */
        .grid-x{display:flex;flex-flow:row wrap;}
        .cell{flex:0 0 auto;}
        .large-6{width:50%;}
        @media (max-width:640px){
            .large-6{width:100%;}
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible{
            outline:3px solid rgba(15,107,92,.4);
            outline-offset:2px;
        }

/* roulang page: category2 */
:root{
  --primary:#0F6B5C;--primary-hover:#0A4F44;--accent:#F5A83B;--accent-hover:#E08A0F;
  --coral:#E86A4A;--bg:#F7F5F0;--white:#FFFFFF;--dark:#102A26;--dark-card:#1D3A34;
  --title:#132B26;--body:#3A4A45;--muted:#71837C;--dark-text:#F0F5F2;--dark-muted:#A6BFB7;
  --border:#E4E0D8;--radius-sm:8px;--radius-md:20px;--radius-lg:28px;--radius-pill:999px;
  --shadow-sm:0 2px 8px rgba(16,42,38,0.06);--shadow-md:0 12px 28px rgba(16,42,38,0.12);
  --shadow-accent:0 8px 20px rgba(15,107,92,0.18);
  --font-head:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-body:"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);background:var(--bg);color:var(--body);line-height:1.75;overflow-x:hidden;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s}
a:hover{color:var(--primary-hover)}
ul,ol{list-style:none}
button,input{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section-pad{padding:90px 0}
.text-center{text-align:center}

/* ===== 顶部导航 ===== */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid #E9E5DC}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-family:var(--font-head);font-weight:800;font-size:1.2rem;color:var(--title)}
.logo svg{width:34px;height:34px;flex-shrink:0}
.logo span{white-space:nowrap}
.header-nav{margin-left:48px}
.nav-menu{display:flex;gap:8px;align-items:center}
.nav-menu .nav-link{display:block;padding:8px 18px;font-size:.95rem;font-weight:600;color:var(--body);border-radius:10px;transition:all .25s;position:relative}
.nav-menu .nav-link:hover{color:var(--primary);background:#F0F7F4}
.nav-menu .nav-link.active{color:var(--primary)}
.nav-menu .nav-link.active::after{content:"";position:absolute;left:18px;right:18px;bottom:2px;height:3px;background:var(--primary);border-radius:3px}
.header-cta{display:flex;align-items:center;gap:16px}
.btn{padding:12px 28px;border-radius:12px;font-weight:600;font-size:.95rem;border:none;cursor:pointer;transition:all .25s;display:inline-flex;align-items:center;gap:8px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px);box-shadow:var(--shadow-accent)}
.btn-ghost{background:transparent;border:1.5px solid var(--primary);color:var(--primary)}
.btn-ghost:hover{background:rgba(15,107,92,.05);transform:translateY(-2px)}
.btn-accent{background:var(--accent);color:var(--title)}
.btn-accent:hover{background:var(--accent-hover);color:var(--title);transform:translateY(-2px);box-shadow:0 8px 24px rgba(245,168,59,.35)}
.hamburger{display:none;background:none;border:none;font-size:1.5rem;color:var(--title);cursor:pointer;padding:6px}

/* ===== 移动端菜单 ===== */
.mobile-nav{display:none;position:fixed;top:72px;left:0;right:0;background:#fff;z-index:999;box-shadow:var(--shadow-md);border-bottom:1px solid var(--border);padding:16px 24px}
.mobile-nav.open{display:block}
.mobile-nav a{display:block;padding:14px 12px;font-weight:600;font-size:1rem;color:var(--body);border-radius:10px}
.mobile-nav a:hover{background:#F0F7F4;color:var(--primary)}
.mobile-nav a.active{color:var(--primary);background:#F0F7F4}

/* ===== Hero ===== */
.category-hero{position:relative;padding:80px 0 90px;background:linear-gradient(135deg,#F7F5F0 0%,#E7F2EE 100%);overflow:hidden}
.category-hero::before{content:"";position:absolute;top:-80px;right:-80px;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(15,107,92,.10) 0%,transparent 70%)}
.category-hero::after{content:"";position:absolute;bottom:-40px;left:20%;width:180px;height:180px;border-radius:50%;background:radial-gradient(circle,rgba(245,168,59,.12) 0%,transparent 70%)}
.breadcrumb{font-size:.85rem;color:var(--muted);margin-bottom:20px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb i{font-size:.65rem;margin:0 6px;color:var(--muted)}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;position:relative;z-index:2}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:var(--white);border:1px solid #E9E5DC;border-radius:var(--radius-pill);padding:8px 20px;font-size:.85rem;font-weight:600;color:var(--primary);box-shadow:var(--shadow-sm);margin-bottom:24px}
.hero-badge i{color:var(--accent)}
.category-hero h1{font-family:var(--font-head);font-size:clamp(2rem,3.5vw,3rem);font-weight:800;line-height:1.25;color:var(--title);margin-bottom:20px}
.category-hero h1 .highlight{color:var(--primary)}
.hero-desc{font-size:1.08rem;color:var(--body);line-height:1.8;margin-bottom:32px;max-width:540px}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}
.hero-visual{position:relative}
.hero-img-wrap{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);background:#E7F2EE}
.hero-img-wrap img{width:100%;height:380px;object-fit:cover}
.hero-img-wrap::after{content:"";position:absolute;bottom:0;left:0;right:0;height:4px;background:var(--accent);border-radius:0 0 20px 20px}
.hero-float{position:absolute;background:#fff;border-radius:16px;padding:14px 20px;box-shadow:var(--shadow-md);display:flex;align-items:center;gap:12px;bottom:32px;left:-24px;animation:float 4s ease-in-out infinite}
.hero-float .float-icon{width:42px;height:42px;border-radius:12px;background:#F0F7F4;display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:1.1rem}
.hero-float .float-num{font-size:1.35rem;font-weight:800;color:var(--title);line-height:1.1;font-feature-settings:"tnum"}
.hero-float .float-label{font-size:.78rem;color:var(--muted)}
.hero-float.second{top:36px;bottom:auto;left:auto;right:-20px;animation-delay:1.2s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}

/* ===== 区块标题 ===== */
.section-head{text-align:center;max-width:720px;margin:0 auto 56px}
.section-head .eyebrow{display:inline-block;font-size:.8rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-bottom:12px}
.section-head h2{font-family:var(--font-head);font-size:clamp(1.7rem,2.8vw,2.4rem);font-weight:800;color:var(--title);line-height:1.25;margin-bottom:16px}
.section-head p{font-size:1rem;color:var(--muted);line-height:1.7}

/* ===== 卖点区 ===== */
.features-section{background:var(--white)}
.features-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.feature-card{background:var(--white);border:1px solid #EFEBE2;border-radius:var(--radius-md);padding:32px;box-shadow:var(--shadow-sm);transition:all .3s ease;position:relative;overflow:hidden}
.feature-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--primary);border-radius:0 4px 4px 0;transform:scaleY(0);transition:transform .3s}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#CDE3DC}
.feature-card:hover::before{transform:scaleY(1)}
.feature-icon{width:56px;height:56px;border-radius:16px;background:#F0F7F4;color:var(--primary);font-size:1.3rem;display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.feature-card h3{font-family:var(--font-head);font-size:1.15rem;font-weight:600;color:var(--title);margin-bottom:10px}
.feature-card p{font-size:.92rem;color:var(--body);line-height:1.7}

/* ===== 场景区 ===== */
.scenarios-section{background:var(--bg)}
.scenario-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scenario-item{background:var(--white);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .3s;border:1px solid #EFEBE2}
.scenario-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.scenario-img{height:200px;overflow:hidden;background:#E7F2EE;position:relative}
.scenario-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.scenario-item:hover .scenario-img img{transform:scale(1.04)}
.scenario-img .tag{position:absolute;top:14px;left:14px;background:rgba(255,255,255,.94);color:var(--primary);font-size:.75rem;font-weight:700;padding:6px 14px;border-radius:999px;backdrop-filter:blur(4px)}
.scenario-body{padding:24px}
.scenario-body h3{font-family:var(--font-head);font-size:1.08rem;font-weight:600;color:var(--title);margin-bottom:8px}
.scenario-body p{font-size:.9rem;color:var(--muted);line-height:1.7}
.scenario-body ul{margin-top:14px}
.scenario-body ul li{font-size:.85rem;color:var(--body);padding:5px 0 5px 22px;position:relative}
.scenario-body ul li::before{content:"";position:absolute;left:0;top:13px;width:7px;height:7px;border-radius:50%;background:var(--accent)}

/* ===== 流程区 ===== */
.process-section{background:var(--dark);color:var(--dark-text);position:relative;overflow:hidden}
.process-section::before{content:"";position:absolute;top:-100px;right:10%;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,rgba(245,168,59,.07) 0%,transparent 70%)}
.process-section .section-head h2{color:var(--dark-text)}
.process-section .section-head p{color:var(--dark-muted)}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;z-index:2}
.process-step{background:var(--dark-card);border-radius:var(--radius-md);padding:32px 24px;text-align:center;border:1px solid rgba(255,255,255,.06);transition:transform .3s}
.process-step:hover{transform:translateY(-4px)}
.process-num{width:48px;height:48px;margin:0 auto 16px;border-radius:50%;background:var(--accent);color:var(--title);font-weight:800;font-size:1.1rem;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 14px rgba(245,168,59,.3)}
.process-step h3{font-size:1rem;color:var(--dark-text);margin-bottom:10px;font-family:var(--font-head)}
.process-step p{font-size:.85rem;color:var(--dark-muted);line-height:1.6}

/* ===== 内容卡片区 ===== */
.insights-section{background:var(--white)}
.insights-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.insight-card{background:var(--white);border:1px solid #EFEBE2;border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-sm);transition:all .3s ease}
.insight-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#CDE3DC}
.insight-card .cover{height:180px;overflow:hidden;background:#E7F2EE}
.insight-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.insight-card:hover .cover img{transform:scale(1.05)}
.insight-body{padding:24px}
.insight-tag{display:inline-block;background:#EFF5F2;color:var(--primary);font-size:.75rem;font-weight:600;padding:4px 14px;border-radius:999px;margin-bottom:14px}
.insight-body h3{font-family:var(--font-head);font-size:1.02rem;font-weight:600;color:var(--title);line-height:1.5;margin-bottom:10px}
.insight-body p{font-size:.88rem;color:var(--muted);line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.insight-meta{display:flex;align-items:center;justify-content:space-between;margin-top:16px;font-size:.82rem;color:var(--muted);padding-top:14px;border-top:1px solid #F0ECE3}
.insight-meta a{color:var(--primary);font-weight:600}

/* ===== FAQ ===== */
.faq-section{background:var(--bg)}
.faq-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:start}
.faq-intro h2{font-size:clamp(1.7rem,2.5vw,2.2rem);font-weight:800;color:var(--title);font-family:var(--font-head);margin-bottom:14px}
.faq-intro p{color:var(--muted);font-size:.95rem;line-height:1.8}
.faq-list{display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--white);border:1px solid #EFEBE2;border-radius:16px;overflow:hidden;box-shadow:var(--shadow-sm);transition:border-color .3s}
.faq-item.open{border-left:3px solid var(--accent)}
.faq-q{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;cursor:pointer;font-weight:600;font-size:1rem;color:var(--title);gap:16px;transition:color .25s}
.faq-item.open .faq-q{color:var(--primary)}
.faq-icon{width:30px;height:30px;border-radius:50%;background:#EFF5F2;display:flex;align-items:center;justify-content:center;font-size:.85rem;color:var(--primary);flex-shrink:0;transition:all .3s}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--accent);color:var(--title)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{padding:0 24px 24px;font-size:.92rem;color:var(--body);line-height:1.75}

/* ===== CTA ===== */
.cta-section{padding:70px 0}
.cta-box{background:linear-gradient(145deg,#102A26 0%,#0F3D35 100%);border-radius:var(--radius-lg);padding:70px 56px;position:relative;overflow:hidden;text-align:center}
.cta-box::before{content:"";position:absolute;top:-50px;right:-50px;width:180px;height:180px;border-radius:50%;background:radial-gradient(circle,rgba(245,168,59,.15) 0%,transparent 70%)}
.cta-box::after{content:"";position:absolute;bottom:-30px;left:8%;width:120px;height:120px;border-radius:50%;background:radial-gradient(circle,rgba(15,107,92,.35) 0%,transparent 70%)}
.cta-box h2{color:var(--dark-text);font-size:clamp(1.6rem,3vw,2.4rem);font-weight:800;font-family:var(--font-head);margin-bottom:16px;position:relative;z-index:2}
.cta-box p{color:var(--dark-muted);max-width:520px;margin:0 auto 32px;font-size:1rem;position:relative;z-index:2}
.cta-box .btn{position:relative;z-index:2}

/* ===== 页脚 ===== */
.site-footer{background:var(--dark);color:var(--dark-text);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:40px;padding-bottom:48px}
.footer-brand h3{font-family:var(--font-head);font-size:1.3rem;font-weight:800;color:var(--dark-text);margin-bottom:14px}
.footer-brand p{color:var(--dark-muted);font-size:.9rem;line-height:1.7;max-width:300px}
.footer-col h4{font-size:.95rem;font-weight:600;color:var(--dark-text);margin-bottom:18px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{color:var(--dark-muted);font-size:.9rem;transition:color .2s}
.footer-col ul a:hover{color:var(--accent)}
.footer-contact p{color:var(--dark-muted);font-size:.9rem;margin-bottom:10px}
.footer-contact p i{width:20px;color:var(--accent);margin-right:6px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;text-align:center;font-size:.85rem;color:var(--dark-muted)}
.back-top{position:fixed;bottom:36px;right:36px;width:46px;height:46px;border-radius:50%;background:rgba(15,107,92,.85);color:#fff;border:none;font-size:1rem;cursor:pointer;z-index:999;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-md);transition:all .25s;opacity:0;visibility:hidden}
.back-top.show{opacity:1;visibility:visible}
.back-top:hover{background:var(--accent);color:var(--title);transform:translateY(-3px)}

/* ===== 移动端底部Tab ===== */
.bottom-tab{display:none;position:fixed;bottom:0;left:0;right:0;height:60px;background:#fff;border-top:1px solid var(--border);z-index:1200}
.tab-inner{display:flex;height:100%}
.tab-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;color:var(--muted);font-size:.7rem;font-weight:600;position:relative;transition:color .2s}
.tab-item i{font-size:1.15rem}
.tab-item.active{color:var(--primary)}
.tab-item.active::before{content:"";position:absolute;top:0;left:24%;right:24%;height:2px;background:var(--accent);border-radius:0 0 4px 4px}
.tab-item:hover{color:var(--primary)}

/* ===== 响应式 ===== */
@media(max-width:1024px){
  .header-nav{margin-left:24px}
  .nav-menu .nav-link{padding:8px 12px}
  .container{padding:0 20px}
  .hero-grid{gap:32px}
  .scenario-list{grid-template-columns:repeat(2,1fr)}
  .process-grid{grid-template-columns:repeat(2,1fr)}
  .insights-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero-float{left:-12px}
  .hero-float.second{right:-12px}
}
@media(max-width:768px){
  .section-pad{padding:60px 0}
  .hero-grid{grid-template-columns:1fr}
  .hero-visual{margin-top:32px;order:2}
  .hero-img-wrap img{height:260px}
  .hero-float{left:12px;bottom:16px}
  .hero-float.second{right:12px;top:auto;bottom:80px;left:auto}
  .features-grid{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr}
  .header-cta .btn-ghost{display:none}
  .header-cta .btn-primary{padding:10px 18px;font-size:.85rem}
  .content-grid{grid-template-columns:1fr!important}
  .cta-box{padding:48px 28px}
}
@media(max-width:640px){
  .site-header .header-nav{display:none}
  .hamburger{display:block}
  .header-cta{display:none}
  .category-hero{padding:48px 0 56px}
  .category-hero h1{font-size:1.7rem}
  .hero-desc{font-size:.95rem}
  .hero-cta .btn{width:48%;justify-content:center;padding:12px 10px;font-size:.88rem}
  .scenario-list{grid-template-columns:1fr}
  .process-grid{grid-template-columns:1fr 1fr;gap:16px}
  .process-step{padding:20px 16px}
  .insights-grid{grid-template-columns:1fr}
  .site-footer{padding-bottom:70px}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:32px}
  .bottom-tab{display:block}
  body{padding-bottom:60px}
  .back-top{right:16px;bottom:80px}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0F6B5C;
            --primary-dark: #0A4F44;
            --primary-light: #E7F2EE;
            --accent: #F5A83B;
            --accent-hover: #E08A0F;
            --coral: #E86A4A;
            --bg-warm: #F7F5F0;
            --bg-white: #FFFFFF;
            --bg-dark: #102A26;
            --text-dark: #132B26;
            --text-body: #3A4A45;
            --text-muted: #71837C;
            --text-light: #F0F5F2;
            --text-light-muted: #A6BFB7;
            --border: #E4E0D8;
            --border-warm: #EFEBE2;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-hero: 28px;
            --shadow-card: 0 2px 8px rgba(16, 42, 38, 0.06);
            --shadow-hover: 0 12px 28px rgba(16, 42, 38, 0.12);
            --shadow-badge: 0 8px 20px rgba(15, 107, 92, 0.18);
            --font-head: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-body: "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
            --transition: 0.25s ease-out;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-body);
            background: var(--bg-warm);
            color: var(--text-body);
            line-height: 1.75;
            overflow-x: hidden;
            font-size: 16px;
        }
        img {
            max-width: 100%;
            display: block;
            height: auto;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        button {
            border: none;
            background: none;
            font-family: inherit;
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-head);
            color: var(--text-dark);
            line-height: 1.3;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        section {
            position: relative;
        }

        /* ===== 顶部导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid #E9E5DC;
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(16, 42, 38, 0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-mark {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary-light);
            border-radius: 10px;
        }
        .logo-text {
            font-family: var(--font-head);
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0;
        }
        .nav-menu li {
            margin: 0;
        }
        .nav-link {
            display: inline-block;
            padding: 8px 16px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            position: relative;
            transition: color var(--transition), background var(--transition);
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(15, 107, 92, 0.06);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 3px;
            background: var(--accent);
            border-radius: 999px;
        }
        .header-cta {
            flex-shrink: 0;
            padding: 10px 24px;
            font-size: 0.9rem;
            font-weight: 600;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            background: var(--bg-white);
        }
        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-dark);
            border-radius: 2px;
            transition: transform 0.3s, opacity 0.3s;
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            border-radius: 12px;
            font-size: 1rem;
            font-weight: 600;
            font-family: var(--font-head);
            line-height: 1.2;
            transition: all var(--transition);
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(15, 107, 92, 0.25);
        }
        .btn-outline {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: rgba(15, 107, 92, 0.05);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--accent);
            color: var(--text-dark);
            border-color: var(--accent);
        }
        .btn-accent:hover {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            color: var(--text-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(245, 168, 59, 0.35);
        }
        .btn:focus-visible {
            outline: 3px solid rgba(15, 107, 92, 0.3);
            outline-offset: 2px;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
        }
        .breadcrumb .sep {
            color: var(--border);
        }
        .breadcrumb .current {
            color: var(--text-muted);
        }

        /* ===== 分类 Banner ===== */
        .category-banner {
            background: linear-gradient(135deg, #F7F5F0 0%, #E7F2EE 100%);
            padding: 72px 0 64px;
            border-bottom: 1px solid var(--border-warm);
            position: relative;
            overflow: hidden;
        }
        .category-banner .banner-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
        }
        .category-banner .banner-inner {
            position: relative;
            z-index: 2;
            max-width: 860px;
        }
        .category-banner h1 {
            font-size: clamp(1.9rem, 3.5vw, 2.8rem);
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .category-banner p {
            font-size: 1.05rem;
            color: var(--text-body);
            max-width: 680px;
            margin-bottom: 0;
            line-height: 1.8;
        }

        /* ===== 通用 Section 头 ===== */
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }
        .section-head h2 {
            font-size: clamp(1.7rem, 2.8vw, 2.4rem);
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: -0.01em;
            color: var(--text-dark);
        }
        .section-head p {
            font-size: 1rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .section-head .theme-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 5px 16px;
            border-radius: 999px;
            margin-bottom: 12px;
        }

        /* ===== 数据能力区 ===== */
        .capability-section {
            padding: 90px 0;
            background: var(--bg-warm);
        }
        .capability-section .grid-x {
            row-gap: 24px;
        }
        .capability-card {
            background: var(--bg-white);
            border: 1px solid var(--border-warm);
            border-radius: var(--radius-lg);
            padding: 32px;
            height: 100%;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .capability-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 5px;
            height: 0;
            background: var(--primary);
            border-radius: 0 0 4px 4px;
            transition: height 0.4s ease;
        }
        .capability-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: #CDE3DC;
        }
        .capability-card:hover::before {
            height: 100%;
        }
        .capability-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            margin-bottom: 20px;
        }
        .capability-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text-dark);
        }
        .capability-card > p {
            font-size: 0.95rem;
            color: var(--text-body);
            margin-bottom: 16px;
            line-height: 1.65;
        }
        .capability-card ul {
            margin: 0;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
        }
        .capability-card ul li {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .capability-card ul li::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }

        /* ===== 深度场景区 ===== */
        .scenario-section {
            padding: 90px 0;
            background: var(--bg-white);
        }
        .scenario-item {
            padding: 36px 0;
            border-bottom: 1px solid var(--border-warm);
            row-gap: 32px;
        }
        .scenario-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .scenario-img {
            position: relative;
            border-radius: 24px;
            overflow: hidden;
            background: var(--primary-light);
            box-shadow: var(--shadow-card);
            aspect-ratio: 16 / 11;
        }
        .scenario-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .scenario-img:hover img {
            transform: scale(1.03);
        }
        .img-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(16, 42, 38, 0.85);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            letter-spacing: 0.04em;
            backdrop-filter: blur(4px);
        }
        .scenario-content {
            padding: 12px 0;
        }
        .scenario-content h3 {
            font-size: 1.45rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-dark);
        }
        .scenario-content p {
            font-size: 1rem;
            color: var(--text-body);
            margin-bottom: 18px;
            line-height: 1.75;
        }
        .scenario-content ul {
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .scenario-content ul li {
            font-size: 0.95rem;
            color: var(--text-body);
            padding-left: 26px;
            position: relative;
        }
        .scenario-content ul li::before {
            content: "";
            position: absolute;
            left: 2px;
            top: 10px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            border: 2px solid #FBE3BC;
        }

        /* ===== 数据服务流程 ===== */
        .process-section {
            padding: 90px 0;
            background: var(--bg-dark);
            color: var(--text-light);
        }
        .process-section .section-head h2 {
            color: #fff;
        }
        .process-section .section-head p {
            color: var(--text-light-muted);
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 48px;
        }
        .step-card {
            background: #1D3A34;
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            transition: transform var(--transition), box-shadow var(--transition);
            position: relative;
        }
        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 16px 32px rgba(0, 0, 0, 0.25);
        }
        .step-num {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 0.08em;
            display: inline-block;
            background: rgba(245, 168, 59, 0.12);
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
        }
        .step-card h3 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 10px;
            font-weight: 600;
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--text-light-muted);
            line-height: 1.65;
            margin: 0;
        }
        .step-connector {
            position: absolute;
            top: 50%;
            right: -24px;
            width: 24px;
            height: 2px;
            background: rgba(245, 168, 59, 0.3);
        }
        .step-card:last-child .step-connector {
            display: none;
        }

        /* ===== 数据指标区 ===== */
        .metrics-section {
            padding: 90px 0;
            background: var(--bg-warm);
        }
        .metrics-grid {
            row-gap: 24px;
        }
        .metric-card {
            background: var(--bg-white);
            border: 1px solid var(--border-warm);
            border-radius: var(--radius-lg);
            padding: 36px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            height: 100%;
        }
        .metric-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: #CDE3DC;
        }
        .metric-num {
            display: block;
            font-size: clamp(2rem, 3vw, 2.6rem);
            font-weight: 800;
            color: var(--primary);
            font-feature-settings: "tnum";
            margin-bottom: 8px;
            font-family: var(--font-head);
            line-height: 1.2;
        }
        .metric-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        .metric-chip {
            display: inline-block;
            background: var(--accent);
            color: var(--text-dark);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 999px;
            margin-top: 10px;
            font-feature-settings: "tnum";
        }

        /* ===== CTA 区 ===== */
        .cta-section {
            padding: 80px 0 90px;
            background: var(--bg-warm);
        }
        .cta-card {
            background: linear-gradient(135deg, var(--bg-dark) 0%, #17372f 60%, #1D3A34 100%);
            border-radius: var(--radius-hero);
            padding: 64px 56px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-card::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(245, 168, 59, 0.28) 0%, rgba(245, 168, 59, 0) 70%);
        }
        .cta-card::after {
            content: "";
            position: absolute;
            bottom: -80px;
            left: -40px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(15, 107, 92, 0.35) 0%, rgba(15, 107, 92, 0) 70%);
        }
        .cta-card h2 {
            color: #fff;
            font-size: clamp(1.6rem, 2.6vw, 2.2rem);
            margin-bottom: 14px;
            position: relative;
            z-index: 2;
        }
        .cta-card p {
            color: var(--text-light-muted);
            font-size: 1rem;
            margin-bottom: 32px;
            position: relative;
            z-index: 2;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-card .btn {
            position: relative;
            z-index: 2;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-light);
            padding: 64px 0 0;
        }
        .footer-top {
            display: flex;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            row-gap: 36px;
        }
        .footer-brand {
            flex: 1.2;
        }
        .footer-logo {
            font-family: var(--font-head);
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            display: inline-block;
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-light-muted);
            max-width: 300px;
            line-height: 1.7;
            margin: 0;
        }
        .footer-col {
            flex: 1;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer-col ul {
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul a {
            color: var(--text-light-muted);
            font-size: 0.9rem;
        }
        .footer-col ul a:hover {
            color: var(--accent);
        }
        .footer-col p {
            font-size: 0.9rem;
            color: var(--text-light-muted);
            margin-bottom: 8px;
            line-height: 1.6;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-bottom p {
            font-size: 0.85rem;
            color: var(--text-light-muted);
            margin: 0;
        }
        .footer-quote {
            display: flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.05);
            padding: 10px 18px;
            border-radius: 999px;
            font-size: 0.85rem;
            color: var(--text-light-muted);
        }
        .footer-quote strong {
            color: #fff;
            font-weight: 600;
        }
        .testi-avatar {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--text-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            font-weight: 700;
            flex-shrink: 0;
        }

        /* ===== 回到顶部 ===== */
        .back-to-top {
            position: fixed;
            bottom: 90px;
            right: 24px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-badge);
            z-index: 900;
            opacity: 0;
            pointer-events: none;
            transform: translateY(10px);
            transition: all 0.3s ease;
        }
        .back-to-top.visible {
            opacity: 1;
            pointer-events: auto;
            transform: translateY(0);
        }
        .back-to-top:hover {
            background: var(--primary-dark);
        }
        .back-to-top::after {
            content: "";
            width: 10px;
            height: 10px;
            border-top: 2px solid #fff;
            border-left: 2px solid #fff;
            transform: rotate(45deg);
            margin-top: 4px;
        }

        /* ===== 移动端底部 Tab ===== */
        .bottom-tabbar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--bg-white);
            border-top: 1px solid var(--border);
            height: 60px;
            z-index: 1000;
            justify-content: space-around;
            align-items: stretch;
        }
        .tab-item {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            color: var(--text-muted);
            font-size: 0.68rem;
            font-weight: 500;
            position: relative;
            transition: color var(--transition);
            padding: 4px 0;
        }
        .tab-item svg {
            width: 22px;
            height: 22px;
            stroke: currentColor;
            fill: none;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .tab-item.active {
            color: var(--primary);
            font-weight: 600;
        }
        .tab-item.active::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 36px;
            height: 3px;
            background: var(--accent);
            border-radius: 0 0 4px 4px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                row-gap: 24px;
            }
            .footer-top {
                flex-wrap: wrap;
            }
            .footer-brand {
                flex-basis: 100%;
            }
            .container {
                padding: 0 20px;
            }
        }

        @media (max-width: 640px) {
            .header-inner {
                height: 62px;
            }
            .nav-menu {
                position: fixed;
                top: 62px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 20px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 12px 24px rgba(16, 42, 38, 0.1);
                display: none;
                z-index: 999;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li {
                width: 100%;
            }
            .nav-link {
                display: block;
                padding: 12px 12px;
                font-size: 1rem;
                width: 100%;
            }
            .nav-link.active::after {
                display: none;
            }
            .nav-link.active {
                background: var(--primary-light);
                border-radius: 10px;
                font-weight: 600;
            }
            .header-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .category-banner {
                padding: 48px 0 40px;
            }
            .category-banner h1 {
                font-size: 1.7rem;
            }
            .category-banner p {
                font-size: 0.95rem;
            }
            .capability-section,
            .scenario-section,
            .process-section,
            .metrics-section,
            .cta-section {
                padding: 56px 0;
            }
            .section-head {
                margin-bottom: 36px;
            }
            .capability-card {
                padding: 24px;
            }
            .scenario-item {
                padding: 24px 0;
                row-gap: 20px;
            }
            .scenario-content h3 {
                font-size: 1.2rem;
            }
            .process-steps {
                grid-template-columns: 1fr;
                row-gap: 16px;
            }
            .step-connector {
                display: none;
            }
            .cta-card {
                padding: 40px 24px;
                border-radius: 20px;
            }
            .cta-card h2 {
                font-size: 1.4rem;
            }
            .cta-card p {
                font-size: 0.9rem;
            }
            .footer-top {
                flex-direction: column;
                gap: 28px;
                padding-bottom: 36px;
            }
            .footer-bottom {
                flex-direction: column-reverse;
                align-items: flex-start;
                padding: 20px 0;
            }
            .footer-quote {
                width: 100%;
            }
            .bottom-tabbar {
                display: flex;
            }
            body {
                padding-bottom: 60px;
            }
            .back-to-top {
                bottom: 76px;
                right: 16px;
                width: 40px;
                height: 40px;
            }
        }

        @media (min-width: 641px) and (max-width: 1024px) {
            .capability-card {
                padding: 26px;
            }
            .scenario-content {
                padding: 0 8px;
            }
        }

        /* ===== 无障碍 ===== */
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }