/* roulang page: index */
:root {
            --bg: #f5f7fb;
            --surface: #ffffff;
            --text: #172033;
            --muted: #657089;
            --primary: #635bff;
            --primary-dark: #4d46d8;
            --line: #e5e9f2;
            --shadow: 0 18px 50px rgba(32, 42, 70, .10);
            --radius: 22px;
        }
        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            color: var(--text);
            background: var(--bg);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.7;
        }
        a { color: inherit; text-decoration: none; }
        .container { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
        header {
            background: rgba(255,255,255,.88);
            border-bottom: 1px solid var(--line);
            backdrop-filter: blur(14px);
        }
        .nav {
            min-height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .brand { font-size: 20px; font-weight: 800; letter-spacing: -.02em; }
        .brand span { color: var(--primary); }
        .nav-link {
            color: var(--muted);
            font-size: 14px;
            font-weight: 700;
            padding: 9px 14px;
            border-radius: 10px;
            transition: .2s ease;
        }
        .nav-link:hover, .nav-link:focus-visible { color: var(--primary); background: #f0efff; }
        .hero {
            padding: 54px 0 38px;
            background: linear-gradient(110deg, #fff 0%, #f4f2ff 52%, #eef8ff 100%);
            border-bottom: 1px solid var(--line);
        }
        .hero-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 44px;
        }
        .hero-copy { max-width: 700px; }
        .eyebrow {
            display: inline-flex;
            padding: 6px 11px;
            color: var(--primary-dark);
            background: #e9e8ff;
            border: 1px solid #d9d7ff;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 800;
        }
        h1 {
            margin: 18px 0 14px;
            font-size: clamp(34px, 5vw, 58px);
            line-height: 1.13;
            letter-spacing: -.045em;
        }
        .hero p { margin: 0; color: var(--muted); font-size: 18px; max-width: 650px; }
        .hero-badge {
            min-width: 190px;
            padding: 22px;
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            text-align: center;
        }
        .hero-badge strong { display: block; color: var(--primary); font-size: 38px; line-height: 1; }
        .hero-badge small { color: var(--muted); }
        main { padding: 54px 0; }
        .panel {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 34px;
            margin-bottom: 22px;
        }
        h2 { margin: 0 0 12px; font-size: 28px; letter-spacing: -.025em; }
        .panel p { margin: 0; color: var(--muted); }
        .grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-top: 24px;
        }
        .item {
            padding: 22px;
            background: #fafbfe;
            border: 1px solid var(--line);
            border-radius: 16px;
        }
        .item b { display: block; margin-bottom: 7px; }
        .item span { color: var(--muted); font-size: 14px; }
        .notice {
            border-left: 4px solid var(--primary);
            background: #f4f3ff;
            padding: 18px 20px;
            border-radius: 12px;
            color: #3d3a75;
        }
        .cta {
            display: inline-flex;
            margin-top: 24px;
            padding: 12px 20px;
            color: #fff;
            background: var(--primary);
            border-radius: 12px;
            font-weight: 800;
            transition: .2s ease;
        }
        .cta:hover, .cta:focus-visible { background: var(--primary-dark); transform: translateY(-2px); }
        :focus-visible { outline: 3px solid rgba(99,91,255,.35); outline-offset: 3px; }
        footer {
            padding: 28px 0;
            color: var(--muted);
            font-size: 13px;
            border-top: 1px solid var(--line);
            background: #fff;
        }
        @media (max-width: 768px) {
            .container { width: min(100% - 28px, 620px); }
            .nav { min-height: 64px; }
            .hero { padding: 38px 0 30px; }
            .hero-inner { display: block; }
            .hero-badge { margin-top: 26px; width: 100%; }
            .grid { grid-template-columns: 1fr; }
            .panel { padding: 24px; }
        }
        @media (max-width: 520px) {
            h1 { font-size: 35px; }
            .hero p { font-size: 16px; }
            .brand { font-size: 17px; }
            .nav-link { padding: 7px 9px; }
        }

/* roulang page: category1 */
:root{
  --bg:#f5f7fb;
  --surface:#fff;
  --text:#172033;
  --muted:#657089;
  --primary:#635bff;
  --primary-dark:#4d46d8;
  --soft:#efeeff;
  --line:#e5e9f2;
  --green:#159b78;
  --shadow:0 18px 50px rgba(32,42,70,.10);
  --radius:22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--text);
  background:var(--bg);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  line-height:1.7;
}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
.container{width:min(1120px,calc(100% - 40px));margin:0 auto}
header{
  position:sticky;
  top:0;
  z-index:20;
  background:rgba(255,255,255,.9);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(16px);
}
.nav{
  min-height:72px;
  display:flex;
  align-items:center;
  gap:26px;
}
.brand{
  flex:0 0 auto;
  font-size:20px;
  font-weight:850;
  letter-spacing:-.03em;
}
.brand span{color:var(--primary)}
nav{display:flex;align-items:center;gap:6px}
.nav-link{
  color:var(--muted);
  font-size:14px;
  font-weight:750;
  padding:9px 14px;
  border-radius:10px;
  transition:.2s ease;
}
.nav-link:hover,.nav-link:focus-visible,.nav-link.active{
  color:var(--primary);
  background:var(--soft);
}
.search{
  margin-left:auto;
  display:flex;
  align-items:center;
  width:min(300px,34vw);
  height:42px;
  padding:0 14px;
  gap:9px;
  color:var(--muted);
  background:#f7f8fc;
  border:1px solid var(--line);
  border-radius:12px;
}
.search svg{width:17px;flex:none}
.search input{
  width:100%;
  border:0;
  outline:0;
  color:var(--text);
  background:transparent;
  font-size:13px;
}
.search:focus-within{
  border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(99,91,255,.12);
}
.hero{
  padding:76px 0 68px;
  background:
    radial-gradient(circle at 85% 20%,rgba(99,91,255,.16),transparent 28%),
    linear-gradient(120deg,#fff 0%,#f3f2ff 58%,#eef8ff 100%);
  border-bottom:1px solid var(--line);
}
.hero-grid{
  display:grid;
  grid-template-columns:1.08fr .92fr;
  align-items:center;
  gap:60px;
}
.eyebrow,.tag{
  display:inline-flex;
  align-items:center;
  padding:6px 11px;
  color:var(--primary-dark);
  background:var(--soft);
  border:1px solid #dcd9ff;
  border-radius:999px;
  font-size:12px;
  font-weight:800;
}
h1,h2,h3,p{margin-top:0}
h1{
  max-width:720px;
  margin:18px 0 18px;
  font-size:clamp(38px,5vw,66px);
  line-height:1.12;
  letter-spacing:-.055em;
}
.hero-copy p{
  max-width:650px;
  color:var(--muted);
  font-size:18px;
}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:46px;
  padding:0 19px;
  border-radius:12px;
  font-size:14px;
  font-weight:800;
  transition:.2s ease;
}
.btn-primary{color:#fff;background:var(--primary);box-shadow:0 10px 22px rgba(99,91,255,.22)}
.btn-primary:hover,.btn-primary:focus-visible{background:var(--primary-dark);transform:translateY(-2px)}
.btn-ghost{color:var(--text);background:#fff;border:1px solid var(--line)}
.btn-ghost:hover,.btn-ghost:focus-visible{border-color:var(--primary);color:var(--primary)}
.notice{
  padding:28px;
  background:rgba(255,255,255,.82);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.notice-head{display:flex;align-items:center;gap:13px;margin-bottom:21px}
.notice-icon{
  width:42px;height:42px;display:grid;place-items:center;
  color:var(--primary);background:var(--soft);border-radius:13px;
}
.notice h3{margin:0;font-size:19px}
.notice-list{display:grid;gap:13px;margin:0;padding:0;list-style:none}
.notice-list li{display:flex;gap:11px;color:var(--muted);font-size:14px}
.notice-list li:before{content:"✓";color:var(--green);font-weight:900}
main{padding:72px 0}
.section-intro{max-width:690px;margin-bottom:27px}
.section-intro h2{margin-bottom:9px;font-size:32px;letter-spacing:-.035em}
.section-intro p{color:var(--muted)}
.feature-layout{
  display:grid;
  grid-template-columns:.8fr 1.2fr;
  gap:20px;
  align-items:stretch;
}
.panel{
  padding:30px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:0 10px 30px rgba(32,42,70,.05);
}
.panel h3{margin-bottom:10px;font-size:21px}
.panel p{color:var(--muted);font-size:14px}
.metric{
  display:flex;
  align-items:end;
  gap:9px;
  margin:22px 0 14px;
}
.metric strong{font-size:46px;line-height:1;color:var(--primary)}
.metric span{color:var(--muted);font-size:13px}
.progress{height:8px;background:#eceef5;border-radius:99px;overflow:hidden}
.progress i{display:block;width:92%;height:100%;background:var(--primary);border-radius:inherit}
.guide-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.guide{
  padding:21px;
  background:#fafbfe;
  border:1px solid var(--line);
  border-radius:16px;
  transition:.2s ease;
}
.guide:hover{transform:translateY(-3px);box-shadow:0 12px 24px rgba(32,42,70,.08);border-color:#d3d0ff}
.guide b{display:block;margin:10px 0 5px}
.guide span{color:var(--muted);font-size:13px}
.guide .tag{padding:4px 8px;font-size:11px}
.steps{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
  margin-top:24px;
}
.step{position:relative;padding:24px;background:#fff;border:1px solid var(--line);border-radius:18px}
.step-num{color:var(--primary);font-size:13px;font-weight:900}
.step h3{margin:9px 0 6px;font-size:18px}
.step p{margin:0;color:var(--muted);font-size:14px}
.quote{
  margin-top:72px;
  padding:40px;
  color:#fff;
  background:#20243b;
  border-radius:var(--radius);
  position:relative;
  overflow:hidden;
}
.quote:after{
  content:"“";
  position:absolute;
  right:30px;top:-25px;
  color:rgba(255,255,255,.08);
  font-size:180px;
  line-height:1;
}
.quote p{position:relative;z-index:1;max-width:790px;font-size:23px;line-height:1.55}
.quote small{color:#b9bfd3}
.faq{margin-top:72px}
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
details{
  padding:20px 22px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:15px;
}
summary{cursor:pointer;font-weight:800;list-style:none}
summary::-webkit-details-marker{display:none}
summary:after{content:"＋";float:right;color:var(--primary);font-size:20px}
details[open] summary:after{content:"－"}
details p{margin:12px 0 0;color:var(--muted);font-size:14px}
.cta-box{
  margin-top:72px;
  padding:42px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:25px;
  background:linear-gradient(110deg,#eeedff,#fff);
  border:1px solid #dcd9ff;
  border-radius:var(--radius);
}
.cta-box h2{margin-bottom:8px;font-size:29px}
.cta-box p{margin:0;color:var(--muted)}
footer{
  padding:30px 0;
  color:var(--muted);
  font-size:13px;
  border-top:1px solid var(--line);
  background:#fff;
}
.footer-inner{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
@media(max-width:900px){
  .hero-grid,.feature-layout{grid-template-columns:1fr}
  .hero-grid{gap:35px}
  .search{width:220px}
}
@media(max-width:700px){
  .container{width:min(100% - 28px,620px)}
  .nav{min-height:64px;gap:10px}
  .brand{font-size:17px}
  .search{order:3;width:100%;margin:0}
  header .nav{flex-wrap:wrap;padding:10px 0 12px}
  nav{margin-left:auto}
  .nav-link{padding:7px 9px}
  .hero{padding:48px 0 42px}
  .hero-copy p{font-size:16px}
  .guide-list,.faq-grid,.steps{grid-template-columns:1fr}
  .panel,.notice,.quote,.cta-box{padding:24px}
  .quote p{font-size:19px}
  .cta-box{display:block}
  .cta-box .btn{margin-top:20px}
}
@media(max-width:420px){
  h1{font-size:37px}
  .actions .btn{width:100%}
}