/* roulang page: index */
:root{
  --primary:#2b4c6f;
  --primary-dark:#1e3a52;
  --accent:#e07a5f;
  --accent-2:#81b29a;
  --accent-3:#f2cc8f;
  --ink:#1f2a36;
  --ink-soft:#43586d;
  --bg-body:#faf7f2;
  --bg-alt:#f0ece4;
  --bg-dark:#1e3a52;
  --border:#dfd6c9;
  --border-strong:#c8bca9;
  --card-bg:#fffdf9;
  --white:#ffffff;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:8px;
  --shadow-soft:0 8px 30px rgba(63, 61, 86, 0.10);
  --shadow-hover:0 16px 40px rgba(63, 61, 86, 0.16);
  --space-1:8px;
  --space-2:16px;
  --space-3:24px;
  --space-4:40px;
  --space-5:64px;
  --space-6:96px;
  --nav-h:76px;
  --font-serif:"Georgia","Noto Serif SC","Songti SC","SimSun",serif;
  --font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-sans);
  background:var(--bg-body);
  color:var(--ink);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  font-size:16px;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--accent)}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
.section{padding:80px 0}
.section-tight{padding:48px 0}
.text-center{text-align:center}
.text-muted{color:var(--ink-soft)}

/* 页面头部导航 */
.page-header{
  position:sticky;top:0;z-index:100;
  background:var(--bg-body);
  border-bottom:1px solid var(--border);
  box-shadow:0 2px 12px rgba(0,0,0,.03);
}
.nav-bar{
  display:flex;align-items:center;justify-content:space-between;
  height:var(--nav-h);
  gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-icon{
  width:38px;height:38px;border-radius:10px;
  background:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:17px;color:#fff;
}
.brand-text{
  font-family:var(--font-serif);
  font-size:1.24rem;font-weight:700;color:var(--primary-dark);
  letter-spacing:.5px;line-height:1.2;
}
.nav-menu{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.nav-menu a{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 16px;border-radius:999px;
  font-size:.93rem;font-weight:500;color:var(--ink-soft);
  transition:all .25s ease;border:1px solid transparent;
}
.nav-menu a i{font-size:.8rem;opacity:.75}
.nav-menu a:hover{color:var(--primary);background:rgba(43,76,111,.06)}
.nav-menu a.active{
  color:var(--primary-dark);
  background:rgba(43,76,111,.09);
  border-color:var(--border);
  font-weight:600;
}
.nav-tools{display:flex;align-items:center;gap:10px}
.nav-search{
  display:flex;align-items:center;
  background:var(--white);
  border:1px solid var(--border);
  border-radius:999px;
  padding:5px 6px 5px 14px;
  gap:8px;
  width:210px;
  transition:border-color .2s,box-shadow .2s;
}
.nav-search:focus-within{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(43,76,111,.1);
}
.nav-search input{
  flex:1;border:none;outline:none;background:transparent;
  font-size:.88rem;color:var(--ink);
}
.nav-search input::placeholder{color:#a89f92}
.nav-search button{
  background:var(--primary);color:#fff;
  border:none;border-radius:50%;
  width:30px;height:30px;
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  font-size:.75rem;transition:background .2s;
}
.nav-search button:hover{background:var(--accent)}
.btn{border-radius:8px;padding:9px 18px;font-size:.9rem;font-weight:600;transition:all .25s;cursor:pointer;border:1px solid transparent;text-align:center;text-decoration:none;display:inline-flex;align-items:center;gap:8px}
.btn-sm{padding:6px 14px;font-size:.84rem}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#c05e45;color:#fff;transform:translateY(-1px)}
.btn-outline{background:transparent;border-color:var(--border-strong);color:var(--ink)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.btn-light{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.35)}
.btn-light:hover{background:rgba(255,255,255,.28);color:#fff}
.burger{display:none;background:none;border:none;cursor:pointer;width:44px;height:44px;border-radius:10px;align-items:center;justify-content:center;flex-direction:column;gap:5px;border:1px solid var(--border)}
.burger span{width:20px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}

/* 主视觉 Hero */
.hero{
  position:relative;
  padding:100px 0 90px;
  background:linear-gradient(rgba(27,43,58,.82),rgba(30,58,82,.88)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  color:#fff;
  overflow:hidden;
}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:60px;align-items:center}
.hero h1{
  font-family:var(--font-serif);
  font-size:2.75rem;
  line-height:1.25;
  font-weight:700;
  letter-spacing:.5px;
  margin-bottom:22px;
}
.hero h1 .accent{color:var(--accent-3)}
.hero .lead{
  font-size:1.12rem;line-height:1.8;
  color:rgba(255,255,255,.92);
  margin-bottom:28px;
  max-width:560px;
}
.hero-stats{display:flex;gap:36px;margin-top:36px;flex-wrap:wrap}
.stat-item .num{font-size:1.7rem;font-weight:800;font-family:var(--font-serif);color:var(--accent-3)}
.stat-item .lbl{font-size:.84rem;color:rgba(255,255,255,.7);margin-top:2px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.2);
  border-radius:999px;
  padding:7px 16px;
  font-size:.83rem;
  color:rgba(255,255,255,.9);
  backdrop-filter:blur(4px);
  margin-bottom:24px;
}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-right{position:relative}
.hero-card{
  background:rgba(255,255,255,.10);
  backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.25);
  border-radius:var(--radius-lg);
  padding:32px;
  box-shadow:0 24px 60px rgba(0,0,0,.2);
}
.hero-card .topbar{display:flex;align-items:center;gap:8px;margin-bottom:12px}
.hero-card .dot{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.4)}
.hero-card .dot.g{background:#7fd8a4}
.hero-card .dot.y{background:var(--accent-3)}
.hero-card .title{font-size:.9rem;color:rgba(255,255,255,.8);letter-spacing:1px}
.hero-card .row{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px dashed rgba(255,255,255,.15);font-size:.92rem}
.hero-card .row:last-child{border-bottom:none}
.hero-card .row .val{font-weight:600;color:var(--accent-3)}

/* 消息条 */
.notice-bar{
  background:var(--accent-3);
  color:var(--primary-dark);
  border-bottom:1px solid rgba(0,0,0,.05);
}
.notice-inner{display:flex;align-items:center;gap:14px;padding:12px 0;font-size:.92rem}
.notice-inner i{color:var(--accent)}

/* 卡片 */
.card{
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:30px;
  transition:all .3s ease;
  height:100%;
  display:flex;flex-direction:column;
}
.card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:var(--border-strong);
}
.card-icon{
  width:52px;height:52px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-size:1.3rem;margin-bottom:18px;
}
.card h3{font-size:1.12rem;margin-bottom:10px;color:var(--primary-dark)}
.card p{font-size:.92rem;color:var(--ink-soft);line-height:1.7;flex:1}
.card .link-more{margin-top:16px;font-size:.9rem;font-weight:600;display:inline-flex;align-items:center;gap:6px}

/* 标签 */
.tag{
  display:inline-block;padding:5px 14px;border-radius:999px;
  background:var(--bg-alt);color:var(--primary-dark);
  font-size:.8rem;font-weight:600;
  border:1px solid var(--border);
}
.tag-accent{background:rgba(224,122,95,.1);color:#b4532f;border-color:rgba(224,122,95,.25)}
.tag-green{background:rgba(129,178,154,.12);color:#3d725a;border-color:rgba(129,178,154,.3)}
.tag-gold{background:rgba(242,204,143,.16);color:#8a6527;border-color:rgba(242,204,143,.4)}

/* 功能模块 */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.cover-wrap{
  border-radius:12px;overflow:hidden;
  border:1px solid var(--border);
  margin-bottom:18px;
}
.cover-wrap img{width:100%;height:160px;object-fit:cover}

/* 场景区块 */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.scene-item{
  text-align:center;padding:34px 20px;
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  transition:.3s;
  display:flex;flex-direction:column;align-items:center;gap:12px;
}
.scene-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.scene-item .scene-ic{
  width:70px;height:70px;border-radius:50%;
  background:var(--bg-alt);
  display:flex;align-items:center;justify-content:center;
  font-size:1.6rem;color:var(--primary);
}
.scene-item h3{font-size:1rem;color:var(--primary-dark)}
.scene-item p{font-size:.84rem;color:var(--ink-soft);line-height:1.6}

/* 数据区 */
.stats-panel{
  background:var(--primary);
  border-radius:var(--radius-lg);
  padding:60px 50px;
  color:#fff;
  display:grid;grid-template-columns:repeat(4,1fr);gap:40px;
}
.stats-panel .s-item{text-align:center}
.stats-panel .s-num{font-size:2.2rem;font-weight:800;font-family:var(--font-serif);color:var(--accent-3)}
.stats-panel .s-text{color:rgba(255,255,255,.8);margin-top:6px;font-size:.9rem}

/* 步骤 */
.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;counter-reset:step}
.step-item{position:relative;padding:36px 24px 28px;background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius-md);text-align:center}
.step-item::before{
  counter-increment:step;content:"0" counter(step);
  font-family:var(--font-serif);font-size:3rem;font-weight:700;
  color:var(--border);display:block;line-height:1;
}
.step-item h3{margin:18px 0 8px;color:var(--primary-dark);font-size:1.05rem}
.step-item p{font-size:.86rem;color:var(--ink-soft)}

/* 暗色区块 */
.dark-zone{
  background:var(--bg-dark);
  color:#fff;
}
.dark-zone .section-title{color:#fff}
.dark-zone .section-sub{color:rgba(255,255,255,.7)}
.dark-zone .card{background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.13)}
.dark-zone .card h3{color:#fff}
.dark-zone .card p{color:rgba(255,255,255,.75)}

/* 区块标题 */
.section-title{font-family:var(--font-serif);font-size:2rem;font-weight:700;color:var(--primary-dark);line-height:1.3;margin-bottom:16px}
.section-sub{font-size:1rem;color:var(--ink-soft);max-width:680px;margin:0 auto 48px;line-height:1.7}

/* 截图对比 */
.showcase-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center}
.showcase-grid .figure{
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:14px;
  box-shadow:var(--shadow-soft);
}
.figure img{border-radius:var(--radius-sm)}
.figure figcaption{font-size:.84rem;color:var(--ink-soft);text-align:center;padding:12px 8px 6px}

/* 最新资讯列表 */
.news-list{background:var(--bg-alt);border-radius:var(--radius-lg);padding:36px;border:1px solid var(--border)}
.news-item{
  display:flex;justify-content:space-between;align-items:center;gap:20px;
  padding:18px 8px;
  border-bottom:1px dashed var(--border-strong);
  transition:.25s;
}
.news-item:last-child{border-bottom:none}
.news-item:hover{background:rgba(255,255,255,.7)}
.news-item .badge{flex-shrink:0}
.news-title a{font-weight:600;color:var(--ink);font-size:.98rem}
.news-title a:hover{color:var(--primary)}
.news-sub{font-size:.82rem;color:#8d8378;margin-top:2px}
.news-time{font-size:.8rem;color:var(--accent);white-space:nowrap}

/* FAQ */
.faq-grid{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:24px 28px;
  transition:.3s;
}
.faq-item summary{
  cursor:pointer;
  font-weight:600;
  color:var(--primary-dark);
  font-size:1rem;
  list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"\f078";
  font-family:"Font Awesome 6 Free";
  font-weight:900;font-size:.8rem;
  color:var(--accent);
  transition:.3s;
}
.faq-item[open] summary::after{transform:rotate(180deg)}
.faq-item .faq-body{margin-top:14px;color:var(--ink-soft);font-size:.93rem;line-height:1.8;border-top:1px dashed var(--border);padding-top:14px}

/* CTA */
.cta-box{
  border-radius:var(--radius-lg);
  padding:64px 50px;
  text-align:center;
  position:relative;
  overflow:hidden;
  background:linear-gradient(rgba(30,58,82,.9),rgba(30,58,82,.95)),url('/assets/images/backpic/back-3.png');
  background-size:cover;
  background-position:center;
  color:#fff;
}
.cta-box h2{font-family:var(--font-serif);font-size:1.9rem;margin-bottom:18px}
.cta-box p{max-width:600px;margin:0 auto 32px;color:rgba(255,255,255,.85)}

/* 页脚 */
.page-footer{
  background:var(--primary-dark);
  color:rgba(255,255,255,.65);
  padding:60px 0 30px;
  margin-top:80px;
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;margin-bottom:36px}
.footer-brand .brand-text{color:#fff}
.footer-brand p{font-size:.87rem;line-height:1.8;max-width:320px;margin-top:14px}
.footer-col h4{color:#fff;font-size:.95rem;margin-bottom:14px}
.footer-col a{display:block;color:rgba(255,255,255,.6);font-size:.88rem;padding:4px 0;transition:.2s}
.footer-col a:hover{color:var(--accent-3);padding-left:4px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding-top:24px;
  display:flex;justify-content:space-between;font-size:.82rem;
  flex-wrap:wrap;gap:12px;
}

/* 模板类辅助 */
.bg-alt{background:var(--bg-alt)}
.mb-0{margin-bottom:0}
.mt-1{margin-top:12px}

/* 响应式 */
@media (max-width:1024px){
  .hero{padding:80px 0 70px}
  .hero h1{font-size:2.2rem}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-right{max-width:560px}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .stats-panel{grid-template-columns:repeat(2,1fr)}
  .step-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:900px){
  .nav-menu{display:none}
  .nav-search{display:none}
  .burger{display:flex}
  .nav-menu.open{
    display:flex;position:absolute;top:var(--nav-h);left:0;right:0;
    background:var(--bg-body);flex-direction:column;
    padding:16px 24px;border-bottom:1px solid var(--border);
    box-shadow:var(--shadow-soft);z-index:99;gap:4px;
  }
  .nav-menu.open a{width:100%;padding:12px 18px}
  .footer-grid{grid-template-columns:1fr}
  .showcase-grid{grid-template-columns:1fr}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .hero{padding:60px 0 50px}
  .hero h1{font-size:1.7rem}
  .hero .lead{font-size:1rem}
  .feature-grid{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr}
  .stats-panel{padding:40px 24px;gap:24px;grid-template-columns:1fr}
  .step-grid{grid-template-columns:1fr}
  .news-list{padding:24px}
  .news-item{flex-direction:column;align-items:flex-start;gap:8px}
  .cta-box{padding:44px 24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:520px){
  .column, .columns{padding:0}
  .brand-text{font-size:1.05rem}
  .hero-cta .btn{width:100%;justify-content:center}
  .stats-panel .s-num{font-size:1.7rem}
}

/* roulang page: category2 */
:root {
            --primary: #345f4e;
            --primary-dark: #254b3c;
            --primary-light: #4f7d6b;
            --accent: #d49b5f;
            --accent-dark: #b37e45;
            --bg: #f3efe7;
            --bg-soft: #e9e2d4;
            --surface: #fffaf0;
            --ink: #2e2a24;
            --ink-soft: #5c554a;
            --line: #d8cfbe;
            --radius: 20px;
            --radius-sm: 14px;
            --shadow: 0 20px 45px -20px rgba(46, 42, 36, .25);
            --shadow-sm: 0 10px 25px -12px rgba(46, 42, 36, .18);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            font-size: 16px;
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, system-ui, sans-serif;
            background: var(--bg);
            color: var(--ink);
            line-height: 1.75;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }

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

        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius);
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
        }

        /* Header */
        .page-header {
            background: var(--surface);
            border-bottom: 2px solid var(--line);
            position: sticky;
            top: 0;
            z-index: 50;
            box-shadow: 0 4px 18px rgba(0, 0, 0, .04);
        }

        .nav-bar {
            display: flex;
            align-items: center;
            min-height: 76px;
            gap: 28px;
            flex-wrap: wrap;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.2rem;
            letter-spacing: .02em;
        }

        .brand-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #fff;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
        }

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

        .nav-menu {
            display: flex;
            gap: 6px;
            flex: 1;
            justify-content: center;
            flex-wrap: wrap;
        }

        .nav-menu a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 15px;
            border-radius: 100px;
            font-weight: 600;
            font-size: .92rem;
            color: var(--ink-soft);
            border: 1px solid transparent;
        }

        .nav-menu a i {
            font-size: .8rem;
            color: var(--primary-light);
        }

        .nav-menu a:hover {
            background: var(--bg-soft);
            color: var(--primary-dark);
        }

        .nav-menu a.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }

        .nav-menu a.active i {
            color: #fff;
        }

        .nav-tools {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--line);
            border-radius: 100px;
            overflow: hidden;
        }

        .nav-search input {
            border: none;
            background: transparent;
            padding: 8px 12px;
            font-size: .88rem;
            width: 130px;
            outline: none;
            color: var(--ink);
        }

        .nav-search button {
            border: none;
            background: transparent;
            padding: 8px 12px;
            color: var(--primary);
            cursor: pointer;
            font-size: .9rem;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 100px;
            font-weight: 700;
            font-size: .9rem;
            line-height: 1.2;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all .2s ease;
        }

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

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }

        .btn-outline {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: .8rem;
        }

        .burger {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            width: 40px;
            height: 40px;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            align-items: center;
        }

        .burger span {
            width: 22px;
            height: 2px;
            background: var(--ink);
            border-radius: 2px;
        }

        /* Hero */
        .page-hero {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: #fff;
            padding: 80px 0 90px;
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: .25;
        }

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

        .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, .15);
            border: 1px solid rgba(255, 255, 255, .25);
            padding: 6px 16px;
            border-radius: 100px;
            font-size: .82rem;
            font-weight: 600;
            letter-spacing: .06em;
            margin-bottom: 20px;
        }

        .page-hero h1 {
            font-size: 3.2rem;
            font-weight: 900;
            line-height: 1.2;
            max-width: 820px;
            margin-bottom: 18px;
            letter-spacing: .01em;
        }

        .page-hero p {
            font-size: 1.12rem;
            max-width: 720px;
            color: rgba(255, 255, 255, .85);
            margin-bottom: 28px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-top: 20px;
        }

        .hero-actions .btn {
            background: #fff;
            color: var(--primary);
        }

        .hero-actions .btn:hover {
            background: var(--accent);
            color: #fff;
        }

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

        .hero-actions .btn-outline-light:hover {
            background: rgba(255, 255, 255, .15);
            color: #fff;
        }

        /* Stats */
        .stats-strip {
            background: var(--surface);
            border-bottom: 2px solid var(--line);
            padding: 30px 0;
        }

        .stats-grid {
            display: flex;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .stat-item {
            text-align: center;
            flex: 1;
            min-width: 130px;
        }

        .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
        }

        .stat-label {
            font-size: .85rem;
            color: var(--ink-soft);
            margin-top: 2px;
        }

        /* Section */
        .section {
            padding: 76px 0;
        }

        .section-tag {
            display: inline-block;
            background: var(--bg-soft);
            color: var(--primary-dark);
            font-size: .78rem;
            font-weight: 700;
            padding: 6px 14px;
            border-radius: 100px;
            letter-spacing: .06em;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 14px;
            color: var(--ink);
        }

        .section-desc {
            color: var(--ink-soft);
            font-size: 1.02rem;
            max-width: 680px;
            margin-bottom: 36px;
        }

        /* Feature Cards */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .feature-card {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 30px;
            box-shadow: var(--shadow-sm);
            transition: all .25s ease;
            position: relative;
            overflow: hidden;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: var(--accent);
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            background: var(--bg-soft);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--primary);
            margin-bottom: 18px;
        }

        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 800;
            margin-bottom: 10px;
        }

        .feature-card p {
            color: var(--ink-soft);
            font-size: .92rem;
            margin-bottom: 16px;
        }

        .feature-link {
            font-size: .85rem;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
        }

        /* Scene */
        .scene-section {
            background: var(--bg-soft);
        }

        .scene-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .scene-item {
            display: flex;
            gap: 20px;
            background: var(--surface);
            border-radius: var(--radius);
            padding: 26px;
            border: 1px solid var(--line);
        }

        .scene-icon {
            width: 50px;
            height: 50px;
            flex-shrink: 0;
            background: var(--primary);
            color: #fff;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
        }

        .scene-item h3 {
            font-size: 1.08rem;
            font-weight: 800;
            margin-bottom: 6px;
        }

        .scene-item p {
            font-size: .9rem;
            color: var(--ink-soft);
            margin-bottom: 8px;
        }

        .scene-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 8px;
        }

        .scene-tags span {
            background: var(--bg);
            border: 1px solid var(--line);
            padding: 4px 12px;
            border-radius: 100px;
            font-size: .75rem;
            color: var(--ink);
            font-weight: 600;
        }

        /* Flow */
        .flow-section .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }

        .step-card {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 26px 20px;
            text-align: center;
            position: relative;
        }

        .step-card::before {
            counter-increment: step;
            content: counter(step, decimal-leading-zero);
            display: block;
            font-size: .9rem;
            font-weight: 800;
            color: var(--accent);
            margin-bottom: 12px;
            letter-spacing: .04em;
        }

        .step-card h4 {
            font-size: 1rem;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: .85rem;
            color: var(--ink-soft);
        }

        /* Image Split */
        .split-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .split-block img {
            width: 100%;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }

        .split-text h3 {
            font-size: 1.7rem;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .split-text p {
            color: var(--ink-soft);
            margin-bottom: 16px;
        }

        .check-list {
            list-style: none;
            margin-top: 14px;
        }

        .check-list li {
            padding: 6px 0;
            font-size: .95rem;
            display: flex;
            gap: 10px;
            align-items: center;
            color: var(--ink);
        }

        .check-list i {
            color: var(--accent);
            font-size: .8rem;
        }

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

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: grid;
            gap: 14px;
        }

        .faq-item {
            border: 1px solid var(--line);
            border-radius: var(--radius-sm);
            background: var(--bg);
            overflow: hidden;
        }

        .faq-q {
            width: 100%;
            background: transparent;
            border: none;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 700;
            color: var(--ink);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            text-align: left;
        }

        .faq-q i {
            color: var(--primary);
            transition: transform .2s;
        }

        .faq-a {
            display: none;
            padding: 0 22px 18px;
            color: var(--ink-soft);
            font-size: .92rem;
        }

        .faq-item.active .faq-a {
            display: block;
        }

        .faq-item.active .faq-q i {
            transform: rotate(180deg);
        }

        /* CTA */
        .cta-banner {
            background: var(--primary-dark);
            color: #fff;
            text-align: center;
            padding: 70px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: .2;
        }

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

        .cta-banner h2 {
            font-size: 2.1rem;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-banner p {
            color: rgba(255, 255, 255, .8);
            max-width: 560px;
            margin: 0 auto 26px;
        }

        .cta-banner .btn {
            background: var(--accent);
            color: #fff;
            font-size: 1rem;
            padding: 14px 34px;
        }

        .cta-banner .btn:hover {
            background: #fff;
            color: var(--primary-dark);
        }

        /* Footer */
        .page-footer {
            background: #1f2d27;
            color: rgba(255, 255, 255, .72);
            padding: 60px 0 0;
            font-size: .9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand .brand {
            margin-bottom: 12px;
            color: #fff;
        }

        .footer-brand .brand-text {
            color: #fff;
        }

        .footer-brand p {
            max-width: 340px;
            font-size: .88rem;
            line-height: 1.7;
        }

        .footer-col h4 {
            color: #fff;
            font-size: .95rem;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .footer-col a {
            display: block;
            padding: 5px 0;
            color: rgba(255, 255, 255, .65);
            font-size: .88rem;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .12);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: .8rem;
            color: rgba(255, 255, 255, .45);
        }

        @media screen and (max-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                gap: 16px;
            }
            .flow-section .steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .split-block {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .nav-bar {
                flex-wrap: wrap;
                padding: 12px 0;
            }
            .nav-menu {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                overflow-x: auto;
                padding-bottom: 4px;
            }
        }

        @media screen and (max-width: 768px) {
            .container {
                padding: 0 20px;
            }
            .page-hero h1 {
                font-size: 2.2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
            .section {
                padding: 56px 0;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .scene-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .nav-search {
                display: none;
            }
            .nav-tools .btn-accent {
                display: none;
            }
            .burger {
                display: flex;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                gap: 4px;
                width: 100%;
                background: var(--surface);
                padding: 16px;
                border-radius: var(--radius-sm);
                box-shadow: var(--shadow);
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .stats-grid {
                display: grid;
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media screen and (max-width: 520px) {
            .page-hero {
                padding: 52px 0 60px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .section-title {
                font-size: 1.55rem;
            }
            .flow-section .steps {
                grid-template-columns: 1fr;
            }
            .stat-num {
                font-size: 1.5rem;
            }
            .cta-banner h2 {
                font-size: 1.6rem;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #1c3d35;
            --color-primary-light: #2b5a4d;
            --color-secondary: #c8794a;
            --color-secondary-light: #d98f5e;
            --color-bg: #f4efe6;
            --color-bg-dark: #182520;
            --color-surface: #fffdf9;
            --color-text: #1b211e;
            --color-text-muted: #6b7270;
            --color-border: #d9cfbc;
            --color-border-dark: #b8a990;
            --radius-lg: 18px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.09);
            --space-section: 88px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--color-secondary);
        }
        img {
            max-width: 100%;
            display: block;
            height: auto;
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            outline: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .page-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(244, 239, 230, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
        }
        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 76px;
            gap: 20px;
            flex-wrap: wrap;
            padding-top: 10px;
            padding-bottom: 10px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-md);
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(28, 61, 53, 0.25);
        }
        .brand-text {
            font-size: 19px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--color-primary);
            white-space: nowrap;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-menu a {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 9px 16px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            transition: all 0.25s ease;
            line-height: 1.2;
        }
        .nav-menu a i {
            font-size: 13px;
            opacity: 0.7;
        }
        .nav-menu a:hover {
            background: rgba(28, 61, 53, 0.08);
            color: var(--color-primary);
        }
        .nav-menu a.active {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(28, 61, 53, 0.25);
        }
        .nav-menu a.active i {
            opacity: 1;
        }
        .nav-tools {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: 999px;
            overflow: hidden;
            padding: 4px 4px 4px 14px;
            transition: border-color 0.25s, box-shadow 0.25s;
            max-width: 200px;
        }
        .nav-search input {
            border: none;
            background: transparent;
            font-size: 13px;
            color: var(--color-text);
            width: 130px;
            padding: 6px 0;
        }
        .nav-search input::placeholder {
            color: #9a978f;
        }
        .nav-search button {
            width: 32px;
            height: 32px;
            border-radius: 999px;
            background: var(--color-primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background 0.25s;
        }
        .nav-search button:hover {
            background: var(--color-primary-light);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            font-size: 14px;
            font-weight: 600;
            line-height: 1.4;
            cursor: pointer;
            border: 2px solid transparent;
            transition: all 0.3s ease;
        }
        .btn-sm {
            padding: 7px 16px;
            font-size: 13px;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 6px 16px rgba(28, 61, 53, 0.25);
        }
        .btn-primary:hover {
            background: var(--color-primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 9px 20px rgba(28, 61, 53, 0.3);
        }
        .btn-accent {
            background: var(--color-secondary);
            color: #fff;
            box-shadow: 0 6px 16px rgba(200, 121, 74, 0.28);
        }
        .btn-accent:hover {
            background: var(--color-secondary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 9px 20px rgba(200, 121, 74, 0.35);
        }
        .btn-outline {
            background: transparent;
            border-color: var(--color-primary);
            color: var(--color-primary);
        }
        .btn-outline:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-light {
            background: #fff;
            color: var(--color-primary);
            box-shadow: var(--shadow-md);
        }
        .btn-light:hover {
            background: var(--color-bg);
            color: var(--color-primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }
        .burger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 42px;
            height: 42px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            background: #fff;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.25s;
        }
        .burger span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .burger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .burger.active span:nth-child(2) {
            opacity: 0;
        }
        .burger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            padding: 110px 0 80px;
            color: #fff;
            overflow: hidden;
        }
        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 30, 25, 0.8) 0%, rgba(15, 30, 25, 0.45) 55%, rgba(15, 30, 25, 0.65) 100%);
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            max-width: 680px;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            color: #efe7d8;
            margin-bottom: 24px;
        }
        .hero-content h1 {
            font-size: clamp(2.1rem, 4vw, 3.4rem);
            line-height: 1.25;
            font-weight: 800;
            letter-spacing: 1px;
            margin-bottom: 20px;
            color: #fff;
        }
        .hero-content h1 span {
            color: #f0b98a;
        }
        .hero-content p {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.88);
            margin-bottom: 34px;
            max-width: 580px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
            margin-top: 64px;
        }
        .stat-card {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: 24px 18px;
            text-align: center;
            transition: background 0.3s, transform 0.3s;
        }
        .stat-card:hover {
            background: rgba(255, 255, 255, 0.18);
            transform: translateY(-4px);
        }
        .stat-card .num {
            font-size: 32px;
            font-weight: 800;
            color: #f0b98a;
            line-height: 1.2;
        }
        .stat-card .label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.8);
            margin-top: 8px;
        }
        .section {
            padding: var(--space-section) 0;
        }
        .section-head {
            max-width: 720px;
            margin-bottom: 48px;
        }
        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            color: var(--color-secondary);
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .section-head h2 {
            font-size: clamp(1.7rem, 3vw, 2.6rem);
            font-weight: 800;
            line-height: 1.3;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            margin-bottom: 14px;
        }
        .section-head p {
            font-size: 16px;
            color: var(--color-text-muted);
            line-height: 1.75;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 32px 26px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.3s, transform 0.3s, border-color 0.3s;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-5px);
            border-color: var(--color-border-dark);
        }
        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 58px;
            height: 58px;
            border-radius: 16px;
            background: var(--color-primary);
            color: #fff;
            font-size: 22px;
            margin-bottom: 20px;
            box-shadow: 0 6px 16px rgba(28, 61, 53, 0.2);
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.72;
        }
        .scenario-section {
            background: var(--color-bg-dark);
            color: #fff;
        }
        .scenario-section .section-head h2 {
            color: #fff;
        }
        .scenario-section .section-head p {
            color: rgba(255, 255, 255, 0.75);
        }
        .scenario-section .section-tag {
            color: #f0b98a;
        }
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .scenario-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all 0.3s;
            display: flex;
            flex-direction: column;
        }
        .scenario-card:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.22);
            transform: translateY(-5px);
        }
        .scenario-img {
            height: 178px;
            overflow: hidden;
        }
        .scenario-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s;
        }
        .scenario-card:hover .scenario-img img {
            transform: scale(1.04);
        }
        .scenario-body {
            padding: 26px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .scenario-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
            color: #f5efe4;
        }
        .scenario-body p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.72);
            line-height: 1.75;
            margin-bottom: 16px;
            flex: 1;
        }
        .scenario-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: #f0b98a;
        }
        .scenario-link i {
            transition: transform 0.25s;
        }
        .scenario-link:hover i {
            transform: translateX(4px);
        }
        .process-section {
            background: var(--color-surface);
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            position: relative;
        }
        .process-steps::before {
            content: "";
            position: absolute;
            top: 28px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
            opacity: 0.25;
        }
        .process-step {
            position: relative;
            text-align: center;
            padding: 16px;
        }
        .process-step .step-num {
            width: 56px;
            height: 56px;
            margin: 0 auto 18px;
            border-radius: 999px;
            background: var(--color-primary);
            color: #fff;
            font-size: 22px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 4px solid var(--color-surface);
            box-shadow: 0 0 0 2px var(--color-border);
            position: relative;
            z-index: 1;
        }
        .process-step h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
        }
        .metrics-section {
            background: var(--color-primary);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .metrics-section::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 260px;
            height: 260px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }
        .metric-item {
            text-align: center;
            padding: 20px;
        }
        .metric-item .metric-num {
            font-size: clamp(2.4rem, 4vw, 3.4rem);
            font-weight: 800;
            color: #f0b98a;
            line-height: 1.1;
        }
        .metric-item .metric-label {
            font-size: 15px;
            margin-top: 10px;
            color: rgba(255, 255, 255, 0.85);
            letter-spacing: 0.5px;
        }
        .faq-section {
            background: var(--color-bg);
        }
        .faq-wrap {
            max-width: 840px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color 0.3s, box-shadow 0.3s;
        }
        .faq-item:hover {
            border-color: var(--color-border-dark);
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 14px;
            color: var(--color-secondary);
            transition: transform 0.3s;
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-item[open] {
            border-color: var(--color-primary);
            box-shadow: 0 4px 16px rgba(28, 61, 53, 0.08);
        }
        .faq-item .faq-answer {
            padding: 0 24px 22px;
            color: var(--color-text);
            font-size: 15px;
            line-height: 1.8;
            border-top: 1px solid var(--color-border);
            padding-top: 16px;
        }
        .cta-section {
            background: var(--color-bg);
            padding: 120px 0;
        }
        .cta-inner {
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            border-radius: 24px;
            padding: 70px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .cta-inner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(28, 61, 53, 0.92), rgba(28, 61, 53, 0.7));
        }
        .cta-inner>* {
            position: relative;
            z-index: 2;
        }
        .cta-inner h2 {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .cta-inner p {
            font-size: 16px;
            max-width: 600px;
            margin: 0 auto 30px;
            color: rgba(255, 255, 255, 0.9);
        }
        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .page-footer {
            background: var(--color-bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 72px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .brand {
            margin-bottom: 16px;
        }
        .footer-brand .brand-text {
            color: #fff;
        }
        .footer-brand .brand-icon {
            background: var(--color-secondary);
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            max-width: 340px;
            line-height: 1.8;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 1px;
        }
        .footer-col a {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            margin-bottom: 12px;
            transition: color 0.25s, padding-left 0.25s;
        }
        .footer-col a:hover {
            color: #f0b98a;
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
            flex-wrap: wrap;
            gap: 12px;
        }
        @media (max-width: 1024px) {
            .nav-bar {
                flex-wrap: wrap;
            }
            .nav-menu {
                order: 3;
                flex-basis: 100%;
                display: none;
                flex-direction: column;
                align-items: flex-start;
                padding: 14px 0 10px;
                border-top: 1px solid var(--color-border);
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                width: 100%;
                border-radius: var(--radius-md);
            }
            .burger {
                display: flex;
            }
            .nav-search {
                display: none;
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .process-steps::before {
                display: none;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            :root {
                --space-section: 60px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .cta-inner {
                padding: 50px 24px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }
            .brand-text {
                font-size: 16px;
            }
            .nav-bar {
                min-height: 64px;
                gap: 10px;
            }
            .nav-tools .btn-sm {
                display: none;
            }
            .feature-grid,
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 18px;
            }
            .hero {
                padding: 76px 0 60px;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-content p {
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-stats {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
                margin-top: 40px;
            }
            .stat-card {
                padding: 18px 12px;
            }
            .stat-card .num {
                font-size: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: category3 */
:root {
  --primary: #9a6ef2;
  --primary-dark: #7c4fe0;
  --primary-light: #c8b0f8;
  --accent: #64d4b0;
  --accent-dark: #3bb88b;
  --bg: #1a1726;
  --bg-light: #231f33;
  --bg-card: #2c2740;
  --text: #f2eef7;
  --text-dim: #b3aac6;
  --text-faint: #8a809e;
  --border: #3d3650;
  --border-light: #4d4465;
  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 12px 36px rgba(0,0,0,0.28);
  --shadow-hover: 0 18px 48px rgba(0,0,0,0.4);
  --space: 24px;
  --space-lg: 48px;
  --font-body: "PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,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(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary-light); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--accent); }
ul,ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
input,textarea,select { font-family: inherit; }

.container { max-width: 1280px; margin: 0 auto; padding: 0 var(--space); }
.section { padding: 70px 0; }
.section-sm { padding: 48px 0; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-tag {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(122, 96, 226, 0.14);
  border: 1px solid rgba(122, 96, 226, 0.3);
  color: var(--primary-light);
  font-size: 13px; font-weight: 600;
  padding: 6px 16px; border-radius: 100px;
  letter-spacing: 1px; margin-bottom: 14px;
  text-transform: uppercase;
}
.section-title { font-size: clamp(26px, 4vw, 38px); font-weight: 800; line-height: 1.25; margin-bottom: 12px; letter-spacing: -0.02em; }
.section-desc { color: var(--text-dim); font-size: 16px; max-width: 680px; margin: 0 auto; }

/* Header */
.page-header {
  background: rgba(26, 23, 38, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
}
.nav-bar { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-icon {
  width: 40px; height: 40px; border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 18px;
  box-shadow: 0 4px 16px rgba(122, 96, 226, 0.35);
}
.brand-text { font-size: 19px; font-weight: 800; color: var(--text); letter-spacing: -0.01em; white-space: nowrap; }
.nav-menu { display: flex; align-items: center; gap: 4px; flex: 1; justify-content: center; }
.nav-menu a {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 16px; border-radius: 100px;
  color: var(--text-dim); font-size: 14px; font-weight: 600;
  transition: all 0.2s ease; white-space: nowrap;
}
.nav-menu a i { font-size: 13px; opacity: 0.8; }
.nav-menu a:hover { color: var(--text); background: rgba(255,255,255,0.05); }
.nav-menu a.active { color: #fff; background: rgba(122, 96, 226, 0.18); box-shadow: inset 0 0 0 1px rgba(122, 96, 226, 0.3); }
.nav-tools { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.nav-search { display: flex; align-items: center; background: var(--bg-light); border: 1px solid var(--border); border-radius: 100px; padding: 0 6px 0 16px; height: 38px; }
.nav-search input { background: transparent; border: none; outline: none; color: var(--text); font-size: 13px; width: 130px; transition: width 0.3s ease; }
.nav-search input::placeholder { color: var(--text-faint); }
.nav-search input:focus { width: 170px; }
.nav-search button { background: transparent; border: none; color: var(--text-dim); width: 30px; height: 30px; border-radius: 50%; display: flex; align-items: center; justify-content: center; transition: all 0.2s; }
.nav-search button:hover { color: var(--accent); background: rgba(255,255,255,0.06); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 22px; border-radius: 100px; font-size: 14px; font-weight: 700; border: none; transition: all 0.25s ease; line-height: 1.4; }
.btn-accent { background: linear-gradient(135deg, var(--accent), var(--accent-dark)); color: #16211b; box-shadow: 0 4px 18px rgba(100, 212, 176, 0.25); }
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(100, 212, 176, 0.35); color: #16211b; }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; box-shadow: 0 4px 18px rgba(122, 96, 226, 0.3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(122, 96, 226, 0.4); color: #fff; }
.btn-outline { background: transparent; border: 1.5px solid var(--border-light); color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary-light); background: rgba(122, 96, 226, 0.08); transform: translateY(-2px); }
.btn-sm { padding: 7px 16px; font-size: 13px; }
.btn-lg { padding: 14px 34px; font-size: 16px; }
.burger { display: none; flex-direction: column; gap: 5px; background: none; border: none; width: 42px; height: 42px; padding: 10px; border-radius: 10px; }
.burger span { display: block; height: 2px; background: var(--text); border-radius: 4px; transition: all 0.3s; }
.burger:hover { background: rgba(255,255,255,0.06); }

/* Hero */
.hero {
  position: relative;
  background: linear-gradient(135deg, #1a1726 0%, #251d3e 50%, #1d2638 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  background-blend-mode: overlay;
  padding: 90px 0 80px;
  border-bottom: 1px solid var(--border);
}
.hero-inner { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px; align-items: center; }
.hero-content .hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(100, 212, 176, 0.14);
  border: 1px solid rgba(100, 212, 176, 0.3);
  color: var(--accent);
  font-size: 13px; font-weight: 600;
  padding: 5px 14px; border-radius: 100px; margin-bottom: 20px;
}
.hero-content h1 { font-size: clamp(32px, 5vw, 52px); font-weight: 900; line-height: 1.15; margin-bottom: 20px; letter-spacing: -0.02em; }
.hero-content h1 .grad { background: linear-gradient(135deg, var(--primary-light), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-content p { color: var(--text-dim); font-size: 17px; line-height: 1.8; margin-bottom: 32px; max-width: 520px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 36px; margin-top: 40px; border-top: 1px solid var(--border); padding-top: 24px; }
.hero-stats .stat-num { font-size: 24px; font-weight: 800; color: var(--text); line-height: 1.2; }
.hero-stats .stat-label { font-size: 13px; color: var(--text-faint); margin-top: 4px; }
.hero-visual { position: relative; }
.hero-card {
  background: rgba(44, 39, 64, 0.8);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
  padding: 28px;
}
.hero-card-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.hero-card-head .mini-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 14px; }
.hero-card-head .badge-live { display: inline-flex; align-items: center; gap: 6px; background: rgba(100,212,176,0.15); color: var(--accent); font-size: 12px; font-weight: 600; padding: 4px 12px; border-radius: 100px; }
.badge-live::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); animation: pulse 1.8s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.4; transform: scale(0.8); } }
.hero-card-list-item { display: flex; align-items: center; gap: 14px; padding: 13px 0; border-bottom: 1px solid rgba(255,255,255,0.06); }
.hero-card-list-item:last-child { border-bottom: none; }
.hero-card-list-item .dot-icon { width: 34px; height: 34px; border-radius: 10px; background: rgba(122,96,226,0.15); display: flex; align-items: center; justify-content: center; color: var(--primary-light); font-size: 14px; flex-shrink: 0; }
.hero-card-list-item .item-text { flex: 1; }
.hero-card-list-item .item-title { font-size: 13px; font-weight: 600; color: var(--text); }
.hero-card-list-item .item-sub { font-size: 12px; color: var(--text-faint); }
.hero-card-list-item .item-status { font-size: 12px; font-weight: 600; color: var(--accent); }

/* Feature cards */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}
.feature-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--primary), var(--accent)); opacity: 0; transition: opacity 0.3s; }
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: var(--border-light); }
.feature-card:hover::before { opacity: 1; }
.feature-card .fc-icon { width: 52px; height: 52px; border-radius: 14px; background: rgba(122,96,226,0.15); border: 1px solid rgba(122,96,226,0.2); display: flex; align-items: center; justify-content: center; font-size: 20px; color: var(--primary-light); margin-bottom: 20px; transition: all 0.3s; }
.feature-card:hover .fc-icon { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; transform: scale(1.05); }
.feature-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.feature-card p { color: var(--text-dim); font-size: 14px; line-height: 1.75; }

/* Cover section */
.cover-block { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.cover-media { border-radius: 24px; overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--border); }
.cover-media img { width: 100%; min-height: 340px; object-fit: cover; transition: transform 0.5s ease; }
.cover-block:hover .cover-media img { transform: scale(1.02); }
.cover-media img { width: 100%; height: 100%; object-fit: cover; }
.cover-content .section-tag { margin-bottom: 12px; }
.cover-content h2 { font-size: clamp(24px, 3.6vw, 36px); font-weight: 800; line-height: 1.3; margin-bottom: 18px; letter-spacing: -0.02em; }
.cover-content p { color: var(--text-dim); font-size: 16px; line-height: 1.85; margin-bottom: 20px; }
.check-list { display: flex; flex-direction: column; gap: 12px; margin-top: 20px; }
.check-list li { display: flex; align-items: flex-start; gap: 10px; color: var(--text); font-size: 15px; }
.check-list li i { color: var(--accent); margin-top: 4px; font-size: 14px; flex-shrink: 0; }

/* Steps */
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: steps; }
.step-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px 24px; position: relative; transition: all 0.3s ease; }
.step-card:hover { transform: translateY(-4px); border-color: var(--primary); box-shadow: 0 12px 32px rgba(122,96,226,0.15); }
.step-card .step-num { font-size: 42px; font-weight: 900; color: rgba(122,96,226,0.35); line-height: 1; margin-bottom: 18px; }
.step-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.step-card p { color: var(--text-dim); font-size: 14px; line-height: 1.7; }

/* Data band */
.data-band { background: linear-gradient(135deg, rgba(122,96,226,0.15), rgba(100,212,176,0.1)); border: 1px solid var(--border); border-radius: 24px; padding: 44px 48px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.data-item { text-align: center; }
.data-item .num { font-size: 36px; font-weight: 900; background: linear-gradient(135deg, var(--primary-light), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; line-height: 1.2; }
.data-item .label { font-size: 14px; color: var(--text-dim); margin-top: 6px; }
.data-item .sub { font-size: 12px; color: var(--text-faint); margin-top: 2px; }

/* Scenarios */
.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.scenario-card { background: var(--bg-light); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: all 0.3s ease; }
.scenario-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--border-light); }
.scenario-media { position: relative; height: 180px; overflow: hidden; }
.scenario-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.scenario-card:hover .scenario-media img { transform: scale(1.04); }
.scenario-media .badge { position: absolute; top: 14px; left: 14px; background: rgba(26,23,38,0.85); backdrop-filter: blur(8px); padding: 4px 14px; border-radius: 100px; font-size: 12px; font-weight: 700; color: var(--primary-light); border: 1px solid rgba(122,96,226,0.25); }
.scenario-body { padding: 22px 22px 26px; }
.scenario-body h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.scenario-body p { color: var(--text-dim); font-size: 14px; line-height: 1.7; }

/* FAQ */
.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; transition: all 0.3s ease; }
.faq-item:hover { border-color: var(--border-light); }
.faq-item details > summary { list-style: none; }
.faq-item details > summary::-webkit-details-marker { display: none; }
.faq-item summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 24px; cursor: pointer; font-size: 16px; font-weight: 600; color: var(--text); transition: all 0.2s; }
.faq-item summary:hover { color: var(--primary-light); }
.faq-item summary .faq-toggle { color: var(--primary-light); font-size: 14px; transition: transform 0.3s; flex-shrink: 0; }
.faq-item details[open] summary .faq-toggle { transform: rotate(45deg); }
.faq-answer { padding: 0 24px 22px; color: var(--text-dim); font-size: 15px; line-height: 1.8; }
.faq-answer p { margin-bottom: 10px; }
.faq-answer p:last-child { margin-bottom: 0; }

/* CTA */
.cta-section { position: relative; background: linear-gradient(135deg, #2c2740 0%, #251d3e 50%, #1d2638 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat; background-blend-mode: overlay; border-radius: 28px; padding: 60px 48px; text-align: center; overflow: hidden; border: 1px solid var(--border); }
.cta-section::before { content: ''; position: absolute; width: 300px; height: 300px; border-radius: 50%; background: rgba(122,96,226,0.2); top: -100px; right: -80px; filter: blur(60px); }
.cta-section::after { content: ''; position: absolute; width: 200px; height: 200px; border-radius: 50%; background: rgba(100,212,176,0.15); bottom: -60px; left: -40px; filter: blur(50px); }
.cta-section > * { position: relative; z-index: 1; }
.cta-section h2 { font-size: clamp(28px, 4vw, 40px); font-weight: 900; margin-bottom: 14px; letter-spacing: -0.02em; }
.cta-section p { color: var(--text-dim); font-size: 16px; max-width: 560px; margin: 0 auto 32px; line-height: 1.8; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* Footer */
.page-footer { background: #151220; border-top: 1px solid var(--border); padding-top: 56px; margin-top: 60px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 48px; padding-bottom: 40px; }
.footer-brand .brand { margin-bottom: 16px; }
.footer-brand p { color: var(--text-dim); font-size: 14px; line-height: 1.8; max-width: 320px; }
.footer-col h4 { font-size: 14px; font-weight: 700; color: var(--text); margin-bottom: 18px; letter-spacing: 0.03em; }
.footer-col a { display: block; color: var(--text-dim); font-size: 14px; padding: 5px 0; transition: all 0.2s; }
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; border-top: 1px solid rgba(255,255,255,0.06); padding: 22px 0; color: var(--text-faint); font-size: 13px; flex-wrap: wrap; gap: 12px; }

/* Mobile */
@media screen and (max-width: 1024px) {
  .nav-menu { gap: 2px; }
  .nav-menu a { padding: 8px 12px; font-size: 13px; }
  .nav-search input { width: 100px; }
  .nav-search input:focus { width: 130px; }
  .hero-inner { grid-template-columns: 1fr; gap: 36px; }
  .hero-visual { max-width: 560px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .data-band { grid-template-columns: repeat(2, 1fr); padding: 32px; }
  .scenario-grid { grid-template-columns: repeat(2, 1fr); }
  .cover-block { grid-template-columns: 1fr; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media screen and (max-width: 768px) {
  .container { padding: 0 18px; }
  .section { padding: 50px 0; }
  .nav-bar { height: auto; min-height: 64px; flex-wrap: wrap; padding: 10px 0; gap: 12px; }
  .nav-menu {
    display: none; width: 100%; flex-direction: column; align-items: flex-start;
    gap: 6px; padding: 14px 0; border-top: 1px solid var(--border);
  }
  .nav-menu.open { display: flex; }
  .nav-menu a { width: 100%; padding: 10px 12px; border-radius: 10px; font-size: 15px; }
  .nav-tools { margin-left: auto; }
  .nav-search { display: none; }
  .burger { display: flex; }
  .hero { padding: 56px 0 48px; }
  .hero-content h1 { font-size: 32px; }
  .hero-stats { gap: 20px; flex-wrap: wrap; }
  .hero-stats .stat-num { font-size: 20px; }
  .feature-grid { grid-template-columns: 1fr; gap: 16px; }
  .steps-grid { grid-template-columns: 1fr; gap: 16px; }
  .data-band { grid-template-columns: 1fr; gap: 24px; padding: 28px 24px; }
  .scenario-grid { grid-template-columns: 1fr; gap: 16px; }
  .cta-section { padding: 40px 24px; }
  .cta-actions { flex-direction: column; align-items: center; }
  .btn-lg { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media screen and (max-width: 520px) {
  body { font-size: 15px; }
  .brand-text { font-size: 16px; }
  .brand-icon { width: 34px; height: 34px; font-size: 15px; }
  .nav-bar { gap: 8px; }
  .hero-actions .btn { width: 100%; }
  .hero-stats { gap: 16px; }
  .section-title { font-size: 24px; }
  .section-desc { font-size: 14px; }
  .faq-item summary { font-size: 15px; padding: 16px 18px; }
  .faq-answer { padding: 0 18px 18px; font-size: 14px; }
  .data-item .num { font-size: 28px; }
}

/* roulang page: article */
:root {
            --primary: #2a4a5e;
            --primary-dark: #1d3544;
            --accent: #d9822b;
            --accent-dark: #b96d1f;
            --bg: #f7f3ee;
            --bg-soft: #efe9e2;
            --card: #fffdf9;
            --card-border: #e6dccf;
            --text: #2f353b;
            --text-weak: #7a848e;
            --heading: #24343f;
            --border: #ddd3c6;
            --radius: 16px;
            --radius-sm: 8px;
            --shadow: 0 6px 22px rgba(42, 74, 94, .08);
            --shadow-hover: 0 14px 36px rgba(42, 74, 94, .15);
            --transition: .3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }

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

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-pad {
            padding: 80px 0;
        }

        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-eyebrow {
            display: inline-block;
            font-size: .8rem;
            letter-spacing: .14em;
            text-transform: uppercase;
            color: var(--accent);
            background: rgba(217, 130, 43, .1);
            border: 1px solid rgba(217, 130, 43, .25);
            padding: 4px 14px;
            border-radius: 30px;
            margin-bottom: 12px;
            font-weight: 600;
        }

        .section-title {
            font-size: clamp(1.8rem, 3vw, 2.6rem);
            color: var(--heading);
            line-height: 1.3;
            margin: 0 0 12px;
            font-weight: 800;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-weak);
            max-width: 720px;
            margin: 0 auto;
        }

        /* ===== Button ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: .95rem;
            border: 2px solid transparent;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            line-height: 1.4;
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: .85rem;
        }

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

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(42, 74, 94, .25);
        }

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

        .btn-accent:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(217, 130, 43, .3);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }

        .btn:focus-visible,
        a:focus-visible,
        input:focus-visible,
        button:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

        /* ===== Header / Nav ===== */
        .page-header {
            background: rgba(255, 253, 249, .95);
            backdrop-filter: blur(10px);
            border-bottom: 2px solid var(--card-border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(0, 0, 0, .04);
        }

        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            min-height: 70px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            flex-shrink: 0;
        }

        .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            box-shadow: 0 4px 12px rgba(42, 74, 94, .2);
        }

        .brand-text {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--heading);
            letter-spacing: .01em;
            white-space: nowrap;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-menu a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            font-size: .92rem;
            font-weight: 500;
            color: var(--text);
            text-decoration: none;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-menu a i {
            font-size: .85rem;
            color: var(--text-weak);
            transition: color var(--transition);
        }

        .nav-menu a:hover {
            background: rgba(42, 74, 94, .06);
            color: var(--primary);
        }

        .nav-menu a:hover i {
            color: var(--accent);
        }

        .nav-menu a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(42, 74, 94, .25);
        }

        .nav-menu a.active i {
            color: rgba(255, 255, 255, .9);
        }

        .nav-tools {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-soft);
            border: 1px solid var(--border);
            border-radius: 30px;
            padding: 4px 6px 4px 16px;
            transition: all var(--transition);
        }

        .nav-search:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(217, 130, 43, .15);
        }

        .nav-search input {
            border: none;
            background: transparent;
            outline: none;
            font-size: .85rem;
            width: 140px;
            color: var(--text);
        }

        .nav-search input::placeholder {
            color: var(--text-weak);
        }

        .nav-search button {
            background: var(--primary);
            border: none;
            color: #fff;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background var(--transition);
        }

        .nav-search button:hover {
            background: var(--accent);
        }

        .burger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 42px;
            height: 42px;
            background: transparent;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            cursor: pointer;
            padding: 8px;
        }

        .burger span {
            display: block;
            height: 2px;
            background: var(--heading);
            border-radius: 2px;
            transition: all .3s ease;
        }

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

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

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

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 100px 0 90px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 40, 51, .92), rgba(48, 74, 88, .78));
            z-index: 1;
        }

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

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: .85rem;
            color: rgba(255, 255, 255, .75);
            margin-bottom: 26px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, .85);
            text-decoration: none;
            transition: color var(--transition);
        }

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

        .breadcrumb .sep {
            opacity: .5;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(217, 130, 43, .2);
            border: 1px solid rgba(217, 130, 43, .5);
            color: #ffd9a8;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: .8rem;
            font-weight: 600;
            letter-spacing: .04em;
            margin-bottom: 16px;
            backdrop-filter: blur(4px);
        }

        .hero-title {
            color: #fff;
            font-size: clamp(1.7rem, 3.6vw, 2.8rem);
            line-height: 1.35;
            font-weight: 800;
            max-width: 820px;
            margin: 0 0 18px;
            text-shadow: 0 2px 16px rgba(0, 0, 0, .3);
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            color: rgba(255, 255, 255, .8);
            font-size: .9rem;
        }

        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        /* ===== Article Main ===== */
        .article-main {
            padding: 64px 0 40px;
        }

        .article-body {
            background: var(--card);
            border: 2px solid var(--card-border);
            border-radius: var(--radius);
            padding: 48px;
            box-shadow: var(--shadow);
            position: relative;
        }

        .article-body::before {
            content: '';
            position: absolute;
            top: -2px;
            left: 48px;
            width: 80px;
            height: 4px;
            background: var(--accent);
            border-radius: 0 0 4px 4px;
        }

        .article-body h2 {
            font-size: 1.5rem;
            color: var(--heading);
            margin: 32px 0 14px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--bg-soft);
            font-weight: 700;
        }

        .article-body h3 {
            font-size: 1.2rem;
            color: var(--heading);
            margin: 24px 0 12px;
            font-weight: 600;
        }

        .article-body p {
            margin-bottom: 18px;
            font-size: 1rem;
            line-height: 1.8;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 20px;
            padding-left: 24px;
        }

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

        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(217, 130, 43, .06);
            margin: 24px 0;
            padding: 16px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--heading);
            font-style: italic;
        }

        .article-body img {
            border-radius: var(--radius-sm);
            margin: 24px 0;
            box-shadow: var(--shadow);
        }

        .article-body code {
            background: var(--bg-soft);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: .9em;
            font-family: "SFMono-Regular", Consolas, monospace;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
        }

        .article-body th,
        .article-body td {
            padding: 12px 14px;
            border: 1px solid var(--border);
            text-align: left;
        }

        .article-body th {
            background: var(--bg-soft);
            font-weight: 600;
        }

        .article-missing {
            text-align: center;
            padding: 60px 20px;
        }

        .article-missing i {
            font-size: 3rem;
            color: var(--border);
            margin-bottom: 20px;
        }

        .article-missing h2 {
            font-size: 1.6rem;
            color: var(--heading);
            border: none;
            margin-bottom: 10px;
        }

        .article-missing p {
            color: var(--text-weak);
            margin-bottom: 24px;
        }

        /* ===== Sidebar ===== */
        .sidebar-card {
            background: var(--card);
            border: 2px solid var(--card-border);
            border-radius: var(--radius);
            padding: 26px;
            margin-bottom: 24px;
            box-shadow: var(--shadow);
        }

        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--heading);
            margin: 0 0 18px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--bg-soft);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card h3 i {
            color: var(--accent);
        }

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

        .sidebar-list li {
            margin-bottom: 4px;
        }

        .sidebar-list a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            color: var(--text);
            font-size: .9rem;
            transition: all var(--transition);
        }

        .sidebar-list a:hover {
            background: rgba(42, 74, 94, .05);
            color: var(--primary);
            transform: translateX(4px);
        }

        .sidebar-list a i {
            color: var(--text-weak);
            font-size: .8rem;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: var(--bg-soft);
            color: var(--text);
            border: 1px solid var(--border);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: .8rem;
            transition: all var(--transition);
        }

        .tag-item:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .sidebar-promo {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border: none;
            color: #fff;
        }

        .sidebar-promo h3 {
            color: #fff;
            border-color: rgba(255, 255, 255, .2);
        }

        .sidebar-promo h3 i {
            color: var(--accent);
        }

        .sidebar-promo p {
            color: rgba(255, 255, 255, .85);
            font-size: .9rem;
            margin-bottom: 20px;
        }

        .sidebar-promo .btn {
            background: var(--accent);
            border-color: var(--accent);
            width: 100%;
        }

        .sidebar-promo .btn:hover {
            background: #f09147;
            border-color: #f09147;
        }

        /* ===== Feature Section ===== */
        .feature-section {
            padding: 80px 0;
            background: var(--bg-soft);
            border-top: 2px solid var(--card-border);
            border-bottom: 2px solid var(--card-border);
            position: relative;
        }

        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 40px;
        }

        .feature-card {
            background: var(--card);
            border: 2px solid var(--card-border);
            border-radius: var(--radius);
            padding: 32px 26px;
            text-align: left;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), var(--primary));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .4s ease;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(217, 130, 43, .4);
        }

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

        .feature-icon {
            width: 54px;
            height: 54px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.3rem;
            margin-bottom: 20px;
            box-shadow: 0 6px 16px rgba(42, 74, 94, .2);
        }

        .feature-card h3 {
            font-size: 1.1rem;
            color: var(--heading);
            margin: 0 0 10px;
            font-weight: 700;
        }

        .feature-card p {
            font-size: .92rem;
            color: var(--text-weak);
            margin: 0;
            line-height: 1.7;
        }

        /* ===== Related ===== */
        .related-section {
            padding: 80px 0;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 40px;
        }

        .related-card {
            background: var(--card);
            border: 2px solid var(--card-border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all var(--transition);
        }

        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .related-card-img {
            position: relative;
            height: 200px;
            overflow: hidden;
        }

        .related-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .related-card:hover .related-card-img img {
            transform: scale(1.05);
        }

        .related-card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(0, 0, 0, .3), transparent);
        }

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

        .related-card-body h3 {
            font-size: 1rem;
            color: var(--heading);
            margin: 0 0 10px;
            font-weight: 700;
            line-height: 1.5;
        }

        .related-card-body p {
            font-size: .88rem;
            color: var(--text-weak);
            margin: 0 0 14px;
            line-height: 1.6;
        }

        .related-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: .88rem;
            font-weight: 600;
            color: var(--accent);
        }

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

        /* ===== FAQ ===== */
        .faq-section {
            padding: 80px 0;
            background: var(--bg-soft);
            border-top: 2px solid var(--card-border);
            border-bottom: 2px solid var(--card-border);
        }

        .faq-list {
            max-width: 820px;
            margin: 40px auto 0;
        }

        .faq-item {
            background: var(--card);
            border: 2px solid var(--card-border);
            border-radius: var(--radius);
            margin-bottom: 14px;
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(217, 130, 43, .4);
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 24px;
            cursor: pointer;
            font-weight: 600;
            color: var(--heading);
            font-size: .98rem;
            user-select: none;
            transition: all var(--transition);
        }

        .faq-question i {
            color: var(--accent);
            font-size: .9rem;
            transition: transform .3s ease;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            color: var(--text-weak);
            font-size: .92rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 90px 0;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            left: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(217, 130, 43, .15);
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            right: -80px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .06);
        }

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

        .cta-title {
            font-size: clamp(1.7rem, 3vw, 2.4rem);
            color: #fff;
            font-weight: 800;
            margin: 0 0 16px;
        }

        .cta-subtitle {
            color: rgba(255, 255, 255, .85);
            font-size: 1.05rem;
            max-width: 640px;
            margin: 0 auto 36px;
        }

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

        /* ===== Footer ===== */
        .page-footer {
            background: #1c2a35;
            color: rgba(255, 255, 255, .72);
            padding: 64px 0 0;
            border-top: 4px solid var(--accent);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 44px;
            padding-bottom: 40px;
        }

        .footer-brand .brand-text {
            color: #fff;
        }

        .footer-brand p {
            font-size: .9rem;
            line-height: 1.7;
            margin: 18px 0 0;
            color: rgba(255, 255, 255, .65);
            max-width: 340px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: .92rem;
            font-weight: 700;
            margin: 0 0 18px;
            letter-spacing: .04em;
        }

        .footer-col a {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, .65);
            font-size: .88rem;
            margin-bottom: 10px;
            transition: all var(--transition);
        }

        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .12);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: .82rem;
            color: rgba(255, 255, 255, .5);
        }

        /* ===== Animation ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity .6s ease, transform .6s ease;
        }

        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .nav-bar {
                flex-wrap: wrap;
                padding: 12px 0;
            }

            .nav-menu {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                overflow-x: auto;
                padding: 8px 0 4px;
                display: none;
            }

            .nav-menu.show {
                display: flex;
            }

            .nav-tools {
                margin-left: auto;
            }

            .burger {
                display: flex;
            }

            .nav-search {
                display: none;
            }

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

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

        @media (max-width: 768px) {
            .section-pad {
                padding: 56px 0;
            }

            .article-hero {
                padding: 60px 0 56px;
                background-attachment: scroll;
            }

            .article-body {
                padding: 30px 22px;
            }

            .feature-grid,
            .related-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

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

            .hero-title {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .brand-text {
                font-size: .92rem;
            }

            .nav-menu a {
                padding: 8px 12px;
                font-size: .84rem;
            }

            .btn-sm {
                padding: 6px 12px;
                font-size: .8rem;
            }

            .article-main {
                padding: 40px 0 24px;
            }

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