/* roulang page: index */
:root {
      --ink: #182334;
      --muted: #718096;
      --paper: #f6f8fb;
      --surface: #ffffff;
      --line: #e5eaf1;
      --navy: #182b49;
      --blue: #2368d1;
      --cyan: #4fc3c9;
      --orange: #f28b4b;
      --soft-blue: #eaf2ff;
      --soft-cyan: #e8f8f7;
      --radius: 18px;
      --radius-sm: 11px;
      --shadow: 0 16px 42px rgba(25, 45, 76, .09);
      --shadow-small: 0 8px 22px rgba(25, 45, 76, .07);
      --max: 1180px;
    }

    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; display: block; }
    button, input { font: inherit; }
    button { cursor: pointer; }
    :focus-visible { outline: 3px solid rgba(79, 195, 201, .55); outline-offset: 3px; }
    .container { width: min(var(--max), calc(100% - 48px)); margin: 0 auto; }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--blue);
      font-size: 12px;
      font-weight: 800;
      letter-spacing: .12em;
      text-transform: uppercase;
    }
    .eyebrow::before {
      content: "";
      width: 24px;
      height: 2px;
      background: var(--orange);
      border-radius: 10px;
    }
    h1, h2, h3, p { margin-top: 0; }
    h1, h2, h3 { line-height: 1.22; letter-spacing: -.025em; }
    h1 { font-size: clamp(38px, 5vw, 68px); margin-bottom: 22px; }
    h2 { font-size: clamp(28px, 3.3vw, 42px); margin-bottom: 15px; }
    h3 { font-size: 19px; margin-bottom: 9px; }
    .section { padding: 92px 0; }
    .section-alt { background: var(--surface); }
    .section-head { max-width: 670px; margin-bottom: 38px; }
    .section-head p { color: var(--muted); margin-bottom: 0; }
    .topline {
      background: var(--navy);
      color: rgba(255,255,255,.78);
      font-size: 12px;
      padding: 8px 0;
    }
    .topline .container { display: flex; justify-content: space-between; gap: 20px; }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(246,248,251,.92);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(229,234,241,.85);
    }
    .header-main {
      min-height: 78px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 11px;
      font-weight: 900;
      color: var(--navy);
      white-space: nowrap;
    }
    .brand-mark {
      display: grid;
      place-items: center;
      width: 38px;
      height: 38px;
      color: #fff;
      background: var(--blue);
      border-radius: 12px 12px 12px 4px;
      font-size: 15px;
    }
    .brand-name { font-size: 17px; }
    .header-tools { display: flex; align-items: center; gap: 12px; }
    .search {
      display: flex;
      align-items: center;
      width: 224px;
      padding: 0 13px;
      height: 42px;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 12px;
    }
    .search span { color: var(--muted); margin-right: 8px; }
    .search input {
      width: 100%;
      border: 0;
      outline: 0;
      background: transparent;
      color: var(--ink);
      font-size: 13px;
    }
    .nav-row {
      border-top: 1px solid var(--line);
      overflow-x: auto;
      scrollbar-width: none;
    }
    .nav-row::-webkit-scrollbar { display: none; }
    .nav-list {
      display: flex;
      gap: 7px;
      min-height: 48px;
      align-items: center;
      white-space: nowrap;
    }
    .nav-link {
      padding: 7px 16px;
      color: var(--muted);
      border-radius: 9px;
      font-size: 14px;
      transition: .2s ease;
    }
    .nav-link:hover { color: var(--navy); background: var(--soft-blue); }
    .nav-link.active { color: var(--blue); background: var(--soft-blue); font-weight: 800; }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 0 19px;
      border: 1px solid transparent;
      border-radius: 11px;
      font-weight: 800;
      font-size: 14px;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    }
    .btn:hover { transform: translateY(-2px); }
    .btn-primary { color: #fff; background: var(--blue); box-shadow: 0 9px 18px rgba(35,104,209,.2); }
    .btn-primary:hover { background: #1959bb; box-shadow: 0 12px 24px rgba(35,104,209,.28); }
    .btn-light { color: var(--navy); background: #fff; border-color: var(--line); }
    .btn-light:hover { background: var(--soft-blue); }
    .hero {
      position: relative;
      min-height: 610px;
      display: flex;
      align-items: center;
      overflow: hidden;
      background:
        linear-gradient(105deg, rgba(13,31,58,.95) 0%, rgba(24,43,73,.86) 46%, rgba(24,43,73,.35) 100%),
        url("https://images.unsplash.com/photo-1519681393784-d120267933ba?auto=format&fit=crop&w=1800&q=85") center/cover;
      color: #fff;
    }
    .hero::after {
      content: "";
      position: absolute;
      right: 9%;
      top: 18%;
      width: 290px;
      height: 290px;
      border: 1px solid rgba(255,255,255,.19);
      border-radius: 50%;
      box-shadow: 0 0 0 35px rgba(255,255,255,.035), 0 0 0 72px rgba(255,255,255,.025);
    }
    .hero-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, 1.15fr) minmax(300px, .85fr);
      gap: 76px;
      align-items: center;
    }
    .hero-copy { max-width: 720px; }
    .hero .eyebrow { color: #8fe4e0; }
    .hero p { max-width: 690px; color: rgba(255,255,255,.78); font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
    .hero .btn-light { border-color: rgba(255,255,255,.22); color: #fff; background: rgba(255,255,255,.08); }
    .hero .btn-light:hover { background: rgba(255,255,255,.17); }
    .hero-signal {
      padding: 24px;
      background: rgba(255,255,255,.1);
      border: 1px solid rgba(255,255,255,.2);
      border-radius: var(--radius);
      backdrop-filter: blur(12px);
    }
    .signal-title { color: rgba(255,255,255,.7); font-size: 13px; margin-bottom: 18px; }
    .signal-row { display: flex; justify-content: space-between; align-items: end; padding: 15px 0; border-bottom: 1px solid rgba(255,255,255,.14); }
    .signal-row:last-child { border-bottom: 0; padding-bottom: 0; }
    .signal-row strong { font-size: 29px; line-height: 1; }
    .signal-row span { color: rgba(255,255,255,.66); font-size: 13px; }
    .countdown {
      background: var(--orange);
      color: #fff;
      padding: 17px 0;
    }
    .countdown-inner { display: flex; align-items: center; justify-content: space-between; gap: 25px; }
    .countdown strong { font-size: 17px; }
    .timer { display: flex; align-items: center; gap: 10px; }
    .timer b { min-width: 42px; padding: 5px 7px; text-align: center; background: rgba(255,255,255,.18); border-radius: 8px; }
    .timer small { opacity: .8; font-size: 11px; }
    .feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .feature-card, .matrix-card, .review, .faq-item {
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow-small);
    }
    .feature-card { padding: 26px; min-height: 230px; transition: .2s ease; }
    .feature-card:hover, .matrix-card:hover, .review:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
    .icon-box {
      display: grid;
      place-items: center;
      width: 46px; height: 46px;
      margin-bottom: 28px;
      color: var(--blue);
      background: var(--soft-blue);
      border-radius: 13px;
      font-size: 21px;
      font-weight: 900;
    }
    .feature-card:nth-child(2) .icon-box { color: #159995; background: var(--soft-cyan); }
    .feature-card:nth-child(3) .icon-box { color: #dc6b2b; background: #fff0e7; }
    .feature-card p, .matrix-card p, .review p, .faq-item p { color: var(--muted); font-size: 14px; margin-bottom: 0; }
    .stat-strip { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
    .stat { padding: 29px 24px; border-right: 1px solid var(--line); }
    .stat:last-child { border-right: 0; }
    .stat strong { display: block; color: var(--navy); font-size: 34px; line-height: 1.1; }
    .stat span { display: block; color: var(--muted); margin-top: 6px; font-size: 13px; }
    .matrix { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
    .matrix-card { padding: 28px; transition: .2s ease; }
    .matrix-card.featured { color: #fff; background: var(--navy); border-color: var(--navy); }
    .matrix-card.featured p, .matrix-card.featured .matrix-meta { color: rgba(255,255,255,.68); }
    .matrix-meta { display: flex; justify-content: space-between; color: var(--muted); font-size: 12px; margin-top: 25px; }
    .topic-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
    .topic {
      padding: 9px 13px;
      color: var(--navy);
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 9px;
      font-size: 13px;
      transition: .2s ease;
    }
    .topic:hover { color: var(--blue); border-color: var(--blue); background: var(--soft-blue); }
    .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
    .step { position: relative; padding: 0 26px 0 0; }
    .step:not(:last-child)::after {
      content: "";
      position: absolute;
      top: 22px;
      left: 48px;
      right: 18px;
      border-top: 1px dashed #bfd0e6;
    }
    .step-number {
      position: relative;
      z-index: 1;
      display: grid;
      place-items: center;
      width: 44px; height: 44px;
      margin-bottom: 22px;
      color: #fff;
      background: var(--blue);
      border: 6px solid var(--paper);
      border-radius: 50%;
      font-weight: 900;
    }
    .step p { color: var(--muted); font-size: 14px; padding-right: 14px; }
    .news-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 18px; }
    .news-feature {
      min-height: 330px;
      display: flex;
      flex-direction: column;
      justify-content: end;
      padding: 28px;
      color: #fff;
      border-radius: var(--radius);
      background:
        linear-gradient(0deg, rgba(15,30,53,.93), rgba(15,30,53,.05)),
        url("https://images.unsplash.com/photo-1500530855697-b586d89ba3ee?auto=format&fit=crop&w=1000&q=80") center/cover;
    }
    .news-feature p { color: rgba(255,255,255,.72); font-size: 14px; margin-bottom: 0; }
    .news-list { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
    .news-item { display: grid; grid-template-columns: 94px 1fr; gap: 20px; padding: 22px; border-bottom: 1px solid var(--line); }
    .news-item:last-child { border-bottom: 0; }
    .news-date { color: var(--blue); font-size: 13px; font-weight: 800; }
    .news-item h3 { font-size: 16px; margin-bottom: 5px; }
    .news-item p { color: var(--muted); font-size: 13px; margin: 0; }
    .reviews { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .review { padding: 25px; }
    .review-top { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
    .avatar { display: grid; place-items: center; width: 42px; height: 42px; color: #fff; background: var(--blue); border-radius: 50%; font-weight: 800; }
    .review-top strong { display: block; font-size: 14px; }
    .review-top span { color: var(--muted); font-size: 12px; }
    .stars { margin-left: auto; color: var(--orange); letter-spacing: 2px; }
    .faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .faq-item { padding: 22px 24px; }
    .faq-item h3 { font-size: 16px; margin-bottom: 9px; }
    .closing {
      padding: 78px 0;
      color: #fff;
      background: var(--navy);
    }
    .closing-inner { display: flex; justify-content: space-between; align-items: center; gap: 35px; }
    .closing h2 { max-width: 610px; margin-bottom: 10px; }
    .closing p { max-width: 620px; color: rgba(255,255,255,.67); margin-bottom: 0; }
    .site-footer { color: rgba(255,255,255,.67); background: #101d31; padding: 54px 0 24px; }
    .footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
    .footer-brand { color: #fff; margin-bottom: 16px; }
    .footer-desc { max-width: 320px; font-size: 13px; }
    .footer-title { color: #fff; font-size: 14px; margin-bottom: 15px; }
    .footer-links { display: grid; gap: 9px; font-size: 13px; }
    .footer-links a:hover { color: #fff; }
    .copyright { padding-top: 20px; border-top: 1px solid rgba(255,255,255,.12); font-size: 12px; }
    @media (max-width: 900px) {
      .hero-grid { grid-template-columns: 1fr; gap: 38px; }
      .hero { min-height: auto; padding: 100px 0 90px; }
      .hero-signal { max-width: 480px; }
      .feature-grid, .reviews { grid-template-columns: 1fr 1fr; }
      .stat-strip { grid-template-columns: 1fr 1fr; }
      .stat:nth-child(2) { border-right: 0; }
      .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
      .steps { grid-template-columns: 1fr 1fr; gap: 38px 0; }
      .step:not(:last-child)::after { display: none; }
      .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
    }
    @media (max-width: 640px) {
      .container { width: min(var(--max), calc(100% - 32px)); }
      .topline .container { display: block; }
      .topline span:last-child { display: none; }
      .header-main { min-height: 70px; }
      .brand-name { font-size: 15px; }
      .header-tools .btn { display: none; }
      .search { width: 42px; padding: 0; justify-content: center; border: 0; background: transparent; }
      .search input { display: none; }
      .search span { margin: 0; font-size: 19px; }
      .hero { padding: 76px 0 68px; }
      .hero p { font-size: 15px; }
      .hero::after { right: -100px; top: 10%; }
      .countdown-inner { align-items: flex-start; flex-direction: column; gap: 10px; }
      .section { padding: 66px 0; }
      .feature-grid, .matrix, .reviews, .faq-list, .news-layout { grid-template-columns: 1fr; }
      .stat { padding: 22px 16px; }
      .stat strong { font-size: 27px; }
      .steps { grid-template-columns: 1fr; gap: 27px; }
      .step { padding-right: 0; }
      .step-number { margin-bottom: 12px; }
      .news-item { grid-template-columns: 72px 1fr; gap: 12px; padding: 17px; }
      .closing-inner { align-items: flex-start; flex-direction: column; }
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px 20px; }
      .footer-grid > div:first-child { grid-column: 1 / -1; }
    }
    @media (max-width: 390px) {
      .footer-grid { grid-template-columns: 1fr; }
      .footer-grid > div:first-child { grid-column: auto; }
      .hero-actions .btn { width: 100%; }
    }

/* roulang page: category1 */
:root{--ink:#182334;--muted:#718096;--paper:#f6f8fb;--surface:#fff;--line:#e5eaf1;--navy:#182b49;--blue:#2368d1;--cyan:#4fc3c9;--orange:#f28b4b;--soft-blue:#eaf2ff;--soft-cyan:#e8f8f7;--radius:18px;--radius-sm:11px;--shadow:0 16px 42px rgba(25,45,76,.09);--shadow-small:0 8px 22px rgba(25,45,76,.07);--max:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button,input{font:inherit}button{cursor:pointer}.container{width:min(var(--max),calc(100% - 48px));margin:0 auto}.site-header{position:sticky;top:0;z-index:20;background:rgba(246,248,251,.94);backdrop-filter:blur(16px);border-bottom:1px solid rgba(229,234,241,.85)}.header-main{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:inline-flex;align-items:center;gap:11px;font-weight:900;color:var(--navy);white-space:nowrap}.brand-mark{display:grid;place-items:center;width:38px;height:38px;color:#fff;background:var(--blue);border-radius:12px 12px 12px 4px;font-size:15px}.brand-name{font-size:17px}.header-tools{display:flex;align-items:center;gap:12px}.search{display:flex;align-items:center;width:224px;padding:0 13px;height:42px;background:#fff;border:1px solid var(--line);border-radius:12px}.search span{color:var(--muted);margin-right:8px}.search input{width:100%;border:0;outline:0;background:transparent;color:var(--ink);font-size:13px}.search:focus-within{border-color:var(--blue);box-shadow:0 0 0 3px rgba(35,104,209,.12)}.nav-row{border-top:1px solid var(--line);overflow-x:auto;scrollbar-width:none}.nav-row::-webkit-scrollbar{display:none}.nav-list{display:flex;gap:7px;min-height:48px;align-items:center;white-space:nowrap}.nav-link{padding:7px 16px;color:var(--muted);border-radius:9px;font-size:14px;transition:.2s ease}.nav-link:hover{color:var(--navy);background:var(--soft-blue)}.nav-link.active{color:var(--blue);background:var(--soft-blue);font-weight:800}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 19px;border:1px solid transparent;border-radius:11px;font-weight:800;font-size:14px;transition:transform .2s ease,box-shadow .2s ease,background .2s ease}.btn:hover{transform:translateY(-2px)}.btn-primary{color:#fff;background:var(--blue);box-shadow:0 9px 18px rgba(35,104,209,.2)}.btn-primary:hover{background:#1959bb;box-shadow:0 12px 24px rgba(35,104,209,.28)}.btn-light{color:var(--navy);background:#fff;border-color:var(--line)}.btn-light:hover{background:var(--soft-blue)}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:12px;font-weight:800;letter-spacing:.12em}.eyebrow:before{content:"";width:24px;height:2px;background:var(--orange);border-radius:10px}.section{padding:86px 0}.section-alt{background:var(--surface)}.section-head{max-width:700px;margin-bottom:36px}.section-head p{color:var(--muted);margin:10px 0 0}.hero{padding:88px 0 82px;background:linear-gradient(105deg,rgba(13,31,58,.95),rgba(24,43,73,.84)),url("https://images.unsplash.com/photo-1497366754035-f200968a6e72?auto=format&fit=crop&w=1800&q=85") center/cover;color:#fff}.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 390px;gap:70px;align-items:center}.hero h1{font-size:clamp(38px,5vw,68px);line-height:1.15;margin:16px 0 20px;letter-spacing:0}.hero p{max-width:680px;color:rgba(255,255,255,.78);font-size:17px}.hero .eyebrow{color:#8fe4e0}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}.hero .btn-light{color:#fff;background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.24)}.hero .btn-light:hover{background:rgba(255,255,255,.18)}.overview{padding:24px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:var(--radius);backdrop-filter:blur(12px)}.overview-title{font-size:13px;color:rgba(255,255,255,.7);margin-bottom:18px}.overview-row{display:flex;justify-content:space-between;align-items:center;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.14)}.overview-row:last-child{border-bottom:0}.overview-row strong{font-size:28px;line-height:1}.overview-row span{font-size:13px;color:rgba(255,255,255,.68)}h2{font-size:clamp(28px,3vw,42px);line-height:1.25;margin:0}h3{margin:0;font-size:20px;line-height:1.4}.region-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:20px}.region-card{position:relative;min-height:260px;padding:30px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--surface);box-shadow:var(--shadow-small);transition:.2s ease}.region-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}.region-card.primary{color:#fff;background:linear-gradient(135deg,#2368d1,#183b77)}.region-card.primary p{color:rgba(255,255,255,.76)}.region-card h3{margin:12px 0 10px}.region-card p{color:var(--muted);margin:0;max-width:480px}.region-badge{display:inline-flex;padding:5px 10px;border-radius:30px;background:var(--soft-cyan);color:#14858a;font-size:12px;font-weight:800}.primary .region-badge{background:rgba(255,255,255,.16);color:#b9f3ef}.region-number{position:absolute;right:25px;bottom:12px;font-size:90px;line-height:1;font-weight:900;color:rgba(35,104,209,.08)}.primary .region-number{color:rgba(255,255,255,.1)}.split-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:50px;align-items:start}.metric-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.metric{padding:21px;background:var(--soft-blue);border-radius:var(--radius-sm);border:1px solid #dce9fc}.metric strong{display:block;font-size:30px;color:var(--navy);line-height:1.2}.metric span{color:var(--muted);font-size:13px}.topic-list{display:grid;gap:0;border-top:1px solid 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