/* roulang page: index */
:root {
      --brand: #2868d8;
      --brand-dark: #1d4fa8;
      --ink: #183153;
      --muted: #6e8099;
      --bg: #f5f8fc;
      --surface: #ffffff;
      --line: #dce7f3;
      --aqua: #e5f5f5;
      --violet: #f0edfb;
      --warm: #fff2df;
      --radius: 20px;
      --shadow: 0 14px 40px rgba(39, 76, 133, .10);
      --container: 1180px;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      background: var(--bg);
      color: var(--ink);
      font-family: "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", Arial, sans-serif;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; transition: color .2s ease, transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
    img { display: block; max-width: 100%; }
    button, input { font: inherit; }
    button { cursor: pointer; }
    :focus-visible { outline: 3px solid rgba(40, 104, 216, .32); outline-offset: 3px; }
    .container { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; }
    .section { padding: 92px 0; }
    .section-head { max-width: 680px; margin-bottom: 38px; }
    .eyebrow {
      display: inline-flex; align-items: center; gap: 8px; color: var(--brand);
      font-size: 13px; font-weight: 800; letter-spacing: .08em; margin-bottom: 12px;
    }
    .eyebrow::before { content: ""; width: 22px; height: 3px; border-radius: 99px; background: var(--brand); }
    h1, h2, h3, p { margin-top: 0; }
    h1 { font-size: clamp(38px, 5vw, 68px); line-height: 1.16; letter-spacing: -.045em; margin-bottom: 24px; }
    h2 { font-size: clamp(28px, 3.4vw, 44px); line-height: 1.25; letter-spacing: -.03em; margin-bottom: 14px; }
    h3 { font-size: 19px; line-height: 1.4; margin-bottom: 9px; }
    .muted { color: var(--muted); }
    .site-header { background: rgba(255,255,255,.94); border-bottom: 1px solid var(--line); position: relative; z-index: 10; }
    .brand-row { min-height: 84px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .brand { display: inline-flex; align-items: center; gap: 12px; min-width: 0; }
    .brand-mark {
      width: 42px; height: 42px; flex: 0 0 42px; display: grid; place-items: center;
      color: white; background: var(--brand); border-radius: 13px; box-shadow: 0 8px 18px rgba(40,104,216,.25);
    }
    .brand-title { font-weight: 900; letter-spacing: -.03em; font-size: 18px; white-space: nowrap; }
    .brand-sub { color: var(--muted); font-size: 12px; margin-left: 4px; }
    .brand-tools { display: flex; align-items: center; gap: 12px; }
    .age-note { color: #a36822; background: var(--warm); padding: 7px 12px; border-radius: 9px; font-size: 12px; font-weight: 700; }
    .search-mini { display: flex; align-items: center; border: 1px solid var(--line); background: white; border-radius: 12px; overflow: hidden; }
    .search-mini input { width: 150px; border: 0; padding: 9px 11px; color: var(--ink); outline: none; }
    .search-mini button { border: 0; background: transparent; color: var(--brand); padding: 9px 12px; }
    .icon-nav { border-top: 1px solid #edf2f8; padding: 14px 0 17px; }
    .nav-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
    .nav-item {
      display: flex; align-items: center; gap: 11px; padding: 11px 14px; min-height: 58px;
      border: 1px solid transparent; border-radius: 15px; color: #52708f;
    }
    .nav-item:hover { background: #f1f6fd; border-color: var(--line); transform: translateY(-2px); color: var(--brand); }
    .nav-item.active { background: #eaf2ff; color: var(--brand); border-color: #c9ddfa; }
    .nav-icon { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 10px; background: #edf4ff; color: var(--brand); }
    .nav-item:nth-child(2) .nav-icon { background: var(--aqua); color: #278b91; }
    .nav-item:nth-child(3) .nav-icon { background: var(--violet); color: #7869bb; }
    .nav-label { font-weight: 800; font-size: 14px; }
    .nav-desc { display: block; font-size: 11px; color: var(--muted); font-weight: 500; }
    .hero { padding: 76px 0 70px; background: linear-gradient(180deg, #fff 0%, #f5f8fc 100%); }
    .hero-grid { display: grid; grid-template-columns: 1.02fr .98fr; gap: 62px; align-items: center; }
    .hero-copy p { max-width: 630px; font-size: 17px; color: #61758f; margin-bottom: 30px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .btn {
      display: inline-flex; justify-content: center; align-items: center; gap: 8px; min-height: 46px;
      border-radius: 12px; border: 1px solid transparent; padding: 0 19px; font-weight: 800; font-size: 14px;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
    }
    .btn-primary { color: #fff; background: var(--brand); box-shadow: 0 8px 18px rgba(40,104,216,.22); }
    .btn-primary:hover { background: var(--brand-dark); transform: translateY(-2px); box-shadow: 0 12px 24px rgba(40,104,216,.28); }
    .btn-primary:active { transform: translateY(0); }
    .btn-secondary { color: var(--brand); background: white; border-color: #c9d9ec; }
    .btn-secondary:hover { background: #eef5ff; border-color: var(--brand); transform: translateY(-2px); }
    .btn[disabled] { opacity: .5; cursor: not-allowed; transform: none; box-shadow: none; }
    .hero-points { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 34px; }
    .hero-point { display: flex; align-items: center; gap: 8px; color: #57718e; font-size: 13px; }
    .dot { width: 8px; height: 8px; border-radius: 50%; background: #53b5ad; }
    .hero-board { position: relative; min-height: 370px; }
    .board-main {
      position: absolute; inset: 22px 30px 22px 0; background: white; border: 1px solid var(--line);
      border-radius: 25px; box-shadow: var(--shadow); padding: 25px;
    }
    .board-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
    .board-title { font-weight: 900; font-size: 18px; }
    .status { background: #e8f7f1; color: #258d71; font-size: 11px; padding: 5px 9px; border-radius: 8px; font-weight: 800; }
    .topic-strip { display: grid; grid-template-columns: 1.2fr .8fr; gap: 12px; }
    .topic-large, .topic-small { border-radius: 16px; min-height: 135px; padding: 18px; position: relative; overflow: hidden; }
    .topic-large { background: #e7f0ff; }
    .topic-small { background: var(--aqua); }
    .topic-large::after, .topic-small::after { content: ""; position: absolute; width: 100px; height: 100px; border-radius: 50%; right: -25px; bottom: -30px; background: rgba(255,255,255,.5); }
    .topic-label { color: var(--brand); font-size: 12px; font-weight: 800; }
    .topic-small .topic-label { color: #278b91; }
    .topic-large strong, .topic-small strong { display: block; margin-top: 24px; font-size: 20px; position: relative; z-index: 1; }
    .board-list { margin-top: 18px; display: grid; gap: 9px; }
    .board-row { height: 38px; background: #f7f9fc; border-radius: 9px; display: flex; align-items: center; gap: 10px; padding: 0 12px; color: #6a7d95; font-size: 12px; }
    .board-row i { width: 7px; height: 7px; background: var(--brand); border-radius: 50%; }
    .float-tag { position: absolute; right: 0; top: 0; background: var(--warm); color: #a36822; padding: 10px 13px; border-radius: 12px; font-size: 12px; font-weight: 800; box-shadow: var(--shadow); }
    .pain-wrap { display: grid; grid-template-columns: .72fr 1.28fr; gap: 45px; align-items: start; }
    .pain-intro p, .section-head p { color: var(--muted); }
    .pain-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .pain-card, .solution-card, .quote-card, .faq-item, .content-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
    .pain-card { padding: 22px; min-height: 160px; }
    .pain-card:hover, .content-card:hover, .solution-card:hover { transform: translateY(-4px); box-shadow: var(--shadow), 0 9px 20px rgba(40,104,216,.07); }
    .card-icon { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 12px; color: var(--brand); background: #edf4ff; margin-bottom: 17px; }
    .pain-card:nth-child(2) .card-icon { color: #a8772f; background: var(--warm); }
    .pain-card:nth-child(3) .card-icon { color: #278b91; background: var(--aqua); }
    .pain-card:nth-child(4) .card-icon { color: #7869bb; background: var(--violet); }
    .pain-card p, .solution-card p, .content-card p { color: var(--muted); font-size: 13px; margin: 0; line-height: 1.7; }
    .solution { background: #edf5ff; }
    .solution-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .solution-card { padding: 25px; position: relative; transition: .2s ease; }
    .step-no { color: var(--brand); font-size: 12px; font-weight: 900; letter-spacing: .12em; }
    .solution-card h3 { margin-top: 34px; }
    .solution-card::before { content: ""; position: absolute; top: 28px; right: 25px; width: 8px; height: 8px; border-radius: 50%; background: #8bb4ed; }
    .value-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 20px; }
    .value-number { padding: 32px; border-radius: var(--radius); background: var(--brand); color: white; min-height: 245px; }
    .value-number strong { display: block; font-size: 72px; line-height: 1; letter-spacing: -.08em; margin: 18px 0 14px; }
    .value-number p { color: #dbe9ff; font-size: 14px; }
    .value-panel { padding: 28px; border-radius: var(--radius); background: white; border: 1px solid var(--line); box-shadow: var(--shadow); }
    .value-row { display: flex; justify-content: space-between; gap: 20px; padding: 17px 0; border-bottom: 1px solid #edf1f6; }
    .value-row:last-child { border-bottom: 0; }
    .value-row strong { font-size: 15px; }
    .value-row span { color: var(--muted); font-size: 13px; text-align: right; }
    .featured { background: #fff; }
    .feature-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 18px; }
    .feature-big, .feature-side { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); background: white; box-shadow: var(--shadow); }
    .visual { min-height: 170px; position: relative; overflow: hidden; background: #dfeeff; padding: 24px; }
    .feature-big .visual { min-height: 270px; background: #e7f0ff; }
    .visual::before { content: ""; position: absolute; width: 210px; height: 210px; border-radius: 50%; background: rgba(255,255,255,.6); right: 7%; top: -55px; }
    .visual::after { content: ""; position: absolute; width: 150px; height: 150px; border-radius: 35px; transform: rotate(25deg); background: rgba(40,104,216,.10); right: 24%; bottom: -55px; }
    .visual-copy { position: relative; z-index: 1; }
    .visual-copy .badge { display: inline-block; margin-bottom: 70px; }
    .feature-big .visual-copy .badge { margin-bottom: 130px; }
    .feature-body { padding: 23px; }
    .badge { display: inline-flex; align-items: center; background: #eaf2ff; color: var(--brand); padding: 5px 9px; border-radius: 8px; font-size: 11px; font-weight: 900; }
    .badge.aqua { background: var(--aqua); color: #278b91; }
    .badge.warm { background: var(--warm); color: #a36822; }
    .feature-body p { color: var(--muted); font-size: 13px; margin-bottom: 18px; }
    .news-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 18px; }
    .news-list, .news-recommend { padding: 24px; border-radius: var(--radius); background: white; border: 1px solid var(--line); box-shadow: var(--shadow); }
    .news-list a { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 17px 0; border-bottom: 1px solid #edf1f6; }
    .news-list a:last-child { border-bottom: 0; }
    .news-list a:hover { color: var(--brand); padding-left: 6px; }
    .news-list span { color: var(--muted); font-size: 12px; white-space: nowrap; }
    .news-recommend { background: #f0edfb; border-color: #e2dcf6; }
    .news-recommend p { color: #6d668d; font-size: 14px; }
    .quote-section { background: #f0f7f7; }
    .quote-grid { display: grid; grid-template-columns: 1.3fr .7fr .7fr; gap: 15px; }
    .quote-card { padding: 26px; min-height: 190px; }
    .quote-card:first-child { background: white; }
    .quote-mark { font-size: 36px; color: #83c5c1; line-height: 1; }
    .quote-card p { color: #526d86; font-size: 14px; }
    .quote-meta { color: var(--muted); font-size: 12px; margin-top: 18px; }
    .faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .faq-item { overflow: hidden; }
    .faq-question { width: 100%; display: flex; justify-content: space-between; gap: 14px; align-items: center; border: 0; background: white; padding: 18px 20px; color: var(--ink); text-align: left; font-weight: 800; }
    .faq-question:hover { background: #f6f9fd; color: var(--brand); }
    .faq-question .plus { font-size: 22px; color: var(--brand); transition: transform .2s ease; }
    .faq-answer { display: none; padding: 0 20px 19px; color: var(--muted); font-size: 13px; }
    .faq-item.open .faq-answer { display: block; }
    .faq-item.open .plus { transform: rotate(45deg); }
    .cta { padding: 62px 0; }
    .cta-box { display: flex; align-items: center; justify-content: space-between; gap: 25px; padding: 40px 46px; border-radius: 25px; background: #e5f0ff; border: 1px solid #cfe0f6; }
    .cta-box p { color: #5e7590; margin: 0; max-width: 650px; }
    .cta-actions { display: flex; flex-wrap: wrap; gap: 10px; flex: 0 0 auto; }
    .site-footer { background: #183153; color: #d8e5f5; padding: 56px 0 24px; }
    .footer-grid { display: grid; grid-template-columns: 1.35fr 1fr 1fr 1.1fr; gap: 30px; }
    .footer-brand { color: white; font-weight: 900; font-size: 18px; }
    .footer-title { color: white; font-size: 13px; font-weight: 900; margin-bottom: 15px; }
    .footer-links { display: grid; gap: 9px; color: #afc2d9; font-size: 13px; }
    .footer-links a:hover { color: white; text-decoration: underline; }
    .footer-note { color: #9db3cd; font-size: 12px; line-height: 1.8; }
    .copyright { border-top: 1px solid rgba(216,229,245,.15); margin-top: 40px; padding-top: 20px; color: #9db3cd; font-size: 12px; display: flex; justify-content: space-between; gap: 15px; }
    @media (max-width: 1024px) {
      .hero-grid { gap: 30px; }
      .nav-grid { grid-template-columns: repeat(3, 1fr); }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .section { padding: 65px 0; }
      .brand-row { min-height: 72px; }
      .brand-sub, .search-mini { display: none; }
      .age-note { font-size: 11px; }
      .icon-nav { overflow-x: auto; }
      .nav-grid { display: flex; min-width: 650px; }
      .nav-item { min-width: 192px; }
      .hero { padding-top: 55px; }
      .hero-grid, .pain-wrap, .value-grid, .feature-grid, .news-grid { grid-template-columns: 1fr; }
      .hero-board { min-height: 340px; }
      .pain-list, .solution-grid, .faq-grid { grid-template-columns: repeat(2, 1fr); }
      .quote-grid { grid-template-columns: 1fr 1fr; }
      .quote-card:first-child { grid-column: span 2; }
      .cta-box { align-items: flex-start; flex-direction: column; padding: 32px 25px; }
    }
    @media (max-width: 520px) {
      .container { width: min(var(--container), calc(100% - 28px)); }
      h1 { font-size: 39px; }
      .hero-copy p { font-size: 15px; }
      .hero-actions, .cta-actions { width: 100%; }
      .hero-actions .btn, .cta-actions .btn { flex: 1; }
      .hero-board { min-height: 300px; }
      .board-main { inset: 16px 0; padding: 18px; }
      .float-tag { right: 6px; }
      .pain-list, .solution-grid, .faq-grid, .quote-grid { grid-template-columns: 1fr; }
      .quote-card:first-child { grid-column: auto; }
      .topic-large, .topic-small { min-height: 115px; }
      .feature-big .visual { min-height: 220px; }
      .feature-big .visual-copy .badge { margin-bottom: 100px; }
      .copyright { flex-direction: column; }
      .footer-grid { grid-template-columns: 1fr; }
    }

/* roulang page: category2 */
:root{
 --brand:#2868d8;
 --brand-dark:#1d4fa8;
 --ink:#183153;
 --muted:#6e8099;
 --bg:#f5f8fc;
 --surface:#fff;
 --line:#dce7f3;
 --aqua:#e5f5f5;
 --violet:#f0edfb;
 --warm:#fff2df;
 --radius:20px;
 --shadow:0 14px 40px rgba(39,76,133,.10);
 --container:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;background:var(--bg);color:var(--ink);
 font-family:"PingFang SC","Noto Sans CJK SC","Microsoft YaHei",Arial,sans-serif;
 line-height:1.75;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;transition:color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease}
img{display:block;max-width:100%}
button,input,select{font:inherit}
button{cursor:pointer}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{
 outline:3px solid rgba(40,104,216,.28);outline-offset:3px
}
.container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
.site-header{background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);position:relative;z-index:10}
.brand-row{min-height:84px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:12px;min-width:0}
.brand-mark{
 width:42px;height:42px;flex:0 0 42px;display:grid;place-items:center;color:#fff;
 background:var(--brand);border-radius:13px;box-shadow:0 8px 18px rgba(40,104,216,.25)
}
.brand-title{font-weight:900;letter-spacing:-.03em;font-size:18px;white-space:nowrap}
.brand-sub{display:block;color:var(--muted);font-size:12px;margin-left:4px}
.brand-tools{display:flex;align-items:center;gap:12px}
.search-mini{display:flex;align-items:center;border:1px solid var(--line);background:#fff;border-radius:12px;overflow:hidden}
.search-mini input{width:150px;border:0;padding:9px 11px;color:var(--ink);outline:none}
.search-mini button{border:0;background:transparent;color:var(--brand);padding:9px 12px}
.age-note{font-size:12px;color:#9a6b2d;background:var(--warm);padding:5px 10px;border-radius:9px;white-space:nowrap}
.icon-nav{border-top:1px solid #edf2f8;padding:14px 0 17px}
.nav-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.nav-item{
 display:flex;align-items:center;gap:11px;padding:11px 14px;min-height:58px;
 border:1px solid transparent;border-radius:15px;color:#52708f
}
.nav-item:hover{background:#f1f6fd;border-color:var(--line);transform:translateY(-2px);color:var(--brand)}
.nav-item.active{background:#eeeafd;color:#7869bb;border-color:#d8d0f4}
.nav-icon{width:34px;height:34px;display:grid;place-items:center;border-radius:10px;background:#edf4ff;color:var(--brand)}
.nav-item:nth-child(2) .nav-icon{background:var(--aqua);color:#278b91}
.nav-item:nth-child(3) .nav-icon{background:var(--violet);color:#7869bb}
.nav-label{font-weight:800;font-size:14px}
.nav-desc{display:block;font-size:11px;color:var(--muted);font-weight:500}
.page-intro{padding:54px 0 34px;background:linear-gradient(180deg,#fff 0%,#f5f8fc 100%)}
.breadcrumb{display:flex;align-items:center;gap:9px;color:#8394a9;font-size:13px;margin-bottom:23px}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb strong{color:var(--ink);font-weight:800}
.intro-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:42px;align-items:end}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-size:13px;font-weight:800;letter-spacing:.08em;margin-bottom:12px}
.eyebrow:before{content:"";width:22px;height:3px;border-radius:99px;background:var(--brand)}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(30px,4vw,52px);line-height:1.18;letter-spacing:-.045em;margin-bottom:17px}
h2{font-size:clamp(24px,3vw,34px);line-height:1.25;letter-spacing:-.03em;margin-bottom:12px}
h3{font-size:18px;line-height:1.4;margin-bottom:8px}
.intro-copy{font-size:17px;color:#61758f;max-width:700px;margin-bottom:0}
.intro-note{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px 22px;box-shadow:0 10px 28px rgba(39,76,133,.07)}
.intro-note strong{display:block;font-size:25px;color:var(--brand);line-height:1.2}
.intro-note span{display:block;color:var(--muted);font-size:13px;margin-top:5px}
.topic-strip{padding:0 0 28px}
.strip-inner{background:#eef5ff;border:1px solid #d7e6fa;border-radius:18px;padding:14px 18px;display:flex;align-items:center;gap:12px;overflow:auto}
.strip-label{font-size:13px;font-weight:800;color:var(--brand);white-space:nowrap}
.tag{display:inline-flex;align-items:center;min-height:30px;padding:3px 11px;border-radius:9px;background:#fff;border:1px solid var(--line);color:#58718e;font-size:12px;white-space:nowrap}
.tag.active{color:var(--brand);border-color:#bcd3f5;background:#e3efff;font-weight:800}
.tag.soft{background:var(--violet);border-color:#ded8f3;color:#7869bb}
.main-section{padding:30px 0 84px}
.topic-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:28px;align-items:start}
.filter-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:21px;box-shadow:var(--shadow);position:sticky;top:20px}
.filter-title{font-size:16px;font-weight:900;margin-bottom:17px}
.filter-group{padding:17px 0;border-top:1px solid #edf2f8}
.filter-group:first-of-type{border-top:0;padding-top:0}
.filter-group label{display:block;font-size:13px;font-weight:800;margin-bottom:9px;color:#526e8d}
.filter-select,.filter-input{
 width:100%;height:42px;border:1px solid #cfddeb;border-radius:11px;background:#fbfdff;
 padding:0 11px;color:var(--ink);font-size:13px
}
.filter-select:focus,.filter-input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(40,104,216,.10);outline:none}
.check-line{display:flex;align-items:center;gap:8px;color:#637992;font-size:13px;margin:9px 0}
.check-line input{accent-color:var(--brand)}
.filter-actions{display:flex;gap:8px;margin-top:16px}
.btn{
 display:inline-flex;justify-content:center;align-items:center;gap:8px;min-height:44px;
 border-radius:12px;border:1px solid transparent;padding:0 17px;font-weight:800;font-size:13px;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease
}
.btn-primary{color:#fff;background:var(--brand);box-shadow:0 8px 18px rgba(40,104,216,.22)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 12px 24px rgba(40,104,216,.28)}
.btn-primary:active{transform:translateY(0)}
.btn-secondary{color:var(--brand);background:#fff;border-color:#c9d9ec}
.btn-secondary:hover{background:#eef5ff;border-color:var(--brand);transform:translateY(-2px)}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.results-head{display:flex;justify-content:space-between;align-items:flex-end;gap:18px;margin-bottom:18px}
.results-head p{color:var(--muted);font-size:14px;margin:0}
.results-tools{display:flex;align-items:center;gap:8px}
.results-tools select{border:1px solid var(--line);background:#fff;border-radius:10px;color:#58718e;padding:8px 10px;font-size:12px}
.topic-list{display:flex;flex-direction:column;gap:14px}
.topic-card{
 display:grid;grid-template-columns:150px 1fr auto;gap:20px;align-items:center;
 background:#fff;border:1px solid var(--line);border-radius:18px;padding:15px;
 box-shadow:0 9px 26px rgba(39,76,133,.07);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease
}
.topic-card:hover{transform:translateY(-3px);border-color:#c5d9f4;box-shadow:var(--shadow)}
.topic-visual{aspect-ratio:4/3;border-radius:13px;position:relative;overflow:hidden;background:#eaf2ff}
.topic-visual:before,.topic-visual:after{content:"";position:absolute;border-radius:50%}
.topic-visual:before{width:100px;height:100px;right:-21px;top:-25px;background:#cbdfff}
.topic-visual:after{width:80px;height:80px;left:-18px;bottom:-20px;background:#d9f0ee}
.visual-lines{position:absolute;left:20px;right:20px;top:27px;z-index:1}
.visual-lines i{display:block;height:8px;border-radius:8px;background:rgba(40,104,216,.75);margin:10px 0}
.visual-lines i:nth-child(2){width:72%;background:rgba(120,105,187,.7)}
.visual-lines i:nth-child(3){width:48%;background:rgba(39,139,145,.65)}
.topic-body{min-width:0}
.card-meta{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:7px}
.badge{display:inline-flex;align-items:center;min-height:24px;padding:2px 8px;border-radius:7px;background:#edf4ff;color:var(--brand);font-size:11px;font-weight:800}
.badge.aqua{background:var(--aqua);color:#278b91}
.badge.violet{background:var(--violet);color:#7869bb}
.badge.warm{background:var(--warm);color:#a36822}
.topic-body h3{margin:0 0 6px;font-size:19px}
.topic-body p{font-size:13px;color:var(--muted);margin:0;line-height:1.7}
.topic-info{display:flex;flex-wrap:wrap;gap:13px;color:#8494a8;font-size:11px;margin-top:10px}
.topic-action{white-space:nowrap}
.topic-action .btn{min-width:92px}
.timeline-section{padding:0 0 85px}
.section-head{max-width:680px;margin-bottom:30px}
.section-head p{color:var(--muted);margin-bottom:0}
.timeline{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:18px 28px}
.timeline:before{content:"";position:absolute;left:50%;top:18px;bottom:18px;width:1px;background:#cbdced}
.timeline-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px 24px;box-shadow:0 9px 25px rgba(39,76,133,.06)}
.timeline-card:nth-child(odd){margin-right:20px}
.timeline-card:nth-child(even){margin-left:20px}
.timeline-dot{position:absolute;top:25px;width:12px;height:12px;border-radius:50%;background:var(--brand);border:3px solid #eaf2ff;box-shadow:0 0 0 1px #a9c6ed}
.timeline-card:nth-child(odd) .timeline-dot{right:-27px}
.timeline-card:nth-child(even) .timeline-dot{left:-27px;background:#7869bb;border-color:#f0edfb;box-shadow:0 0 0 1px #c8bfee}
.timeline-card p{color:var(--muted);font-size:13px;margin:0}
.faq-section{padding:0 0 84px}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.faq-item{overflow:hidden;box-shadow:0 8px 22px rgba(39,76,133,.06)}
.faq-item summary{list-style:none;cursor:pointer;padding:18px 20px;font-weight:800;font-size:14px;position:relative;padding-right:48px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:after{content:"+";position:absolute;right:20px;top:14px;font-size:23px;font-weight:400;color:var(--brand)}
.faq-item[open] summary{color:var(--brand);background:#f5f9ff}
.faq-item[open] summary:after{content:"−"}
.faq-answer{padding:0 20px 18px;color:var(--muted);font-size:13px;line-height:1.8}
.cta-section{padding:0 0 88px}
.cta-box{
 display:flex;justify-content:space-between;align-items:center;gap:28px;
 background:#eaf3ff;border:1px solid #cfe1f8;border-radius:24px;padding:32px 36px
}
.cta-box h2{margin-bottom:8px}
.cta-box p{color:#627995;margin:0;max-width:650px;font-size:14px}
.cta-actions{display:flex;flex-wrap:wrap;gap:10px;flex:0 0 auto}
.site-footer{background:#203c62;color:#dce8f6;padding:54px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.4fr;gap:35px}
.footer-brand{font-size:19px;font-weight:900;color:#fff}
.footer-note{color:#aebfd4;font-size:12px;line-height:1.8;margin:0}
.footer-title{font-size:13px;font-weight:900;color:#fff;margin-bottom:12px}
.footer-links{display:grid;gap:7px}
.footer-links a{font-size:12px;color:#b8c9dc}
.footer-links a:hover{color:#fff;text-decoration:underline}
.copyright{display:flex;justify-content:space-between;gap:15px;border-top:1px solid rgba(220,232,246,.18);margin-top:35px;padding-top:17px;color:#9db1c9;font-size:11px}
@media(max-width:1024px){
 .intro-grid{grid-template-columns:1fr .65fr}
 .topic-layout{grid-template-columns:215px minmax(0,1fr);gap:20px}
 .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
 .container{width:min(var(--container),calc(100% - 28px))}
 .brand-row{min-height:72px}
 .brand-sub,.age-note{display:none}
 .brand-title{font-size:16px}
 .brand-tools{gap:0}
 .search-mini input{width:105px}
 .nav-grid{grid-template-columns:repeat(3,minmax(145px,1fr));overflow-x:auto;padding-bottom:2px}
 .nav-item{min-height:54px;padding:9px 10px}
 .page-intro{padding-top:38px}
 .intro-grid{grid-template-columns:1fr;gap:22px}
 .intro-note{display:flex;align-items:center;gap:12px}
 .intro-note span{margin-top:0}
 .topic-layout{display:block}
 .filter-panel{position:static;margin-bottom:22px}
 .filter-group{display:none}
 .filter-panel .filter-title:after{content:" · 可按标签、状态筛选";font-size:12px;color:var(--muted);font-weight:500}
 .filter-actions{margin-top:0}
 .topic-card{grid-template-columns:120px 1fr;gap:15px}
 .topic-action{grid-column:2}
 .topic-action .btn{width:100%}
 .timeline{grid-template-columns:1fr;gap:14px}
 .timeline:before{left:6px;top:15px;bottom:15px}
 .timeline-card,.timeline-card:nth-child(odd),.timeline-card:nth-child(even){margin:0 0 0 20px}
 .timeline-dot,.timeline-card:nth-child(odd) .timeline-dot,.timeline-card:nth-child(even) .timeline-dot{left:-27px;right:auto}
 .faq-grid{grid-template-columns:1fr}
 .cta-box{display:block;padding:27px 23px}
 .cta-actions{margin-top:20px}
}
@media(max-width:520px){
 h1{font-size:32px}
 .section-head{margin-bottom:22px}
 .search-mini{display:none}
 .strip-inner{margin:0 -2px}
 .results-head{display:block}
 .results-tools{margin-top:12px}
 .topic-card{grid-template-columns:1fr}
 .topic-visual{aspect-ratio:2.5/1}
 .topic-action{grid-column:auto}
 .topic-body h3{font-size:17px}
 .copyright{display:block}
 .copyright span{display:block;margin-top:5px}
 .footer-grid{grid-template-columns:1fr;gap:25px}
}

/* roulang page: category1 */
:root {
      --brand: #2868d8;
      --brand-dark: #1d4fa8;
      --ink: #183153;
      --muted: #6e8099;
      --bg: #f5f8fc;
      --surface: #ffffff;
      --line: #dce7f3;
      --aqua: #e5f5f5;
      --violet: #f0edfb;
      --warm: #fff2df;
      --soft-blue: #eaf2ff;
      --radius: 20px;
      --shadow: 0 14px 40px rgba(39, 76, 133, .10);
      --container: 1180px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      background: var(--bg);
      color: var(--ink);
      font-family: "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", Arial, sans-serif;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color .2s ease, transform .2s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease;
    }
    a:hover { color: var(--brand); }
    img { display: block; max-width: 100%; }
    button, input, select { font: inherit; }
    button { cursor: pointer; }
    button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible {
      outline: 3px solid rgba(40,104,216,.26);
      outline-offset: 3px;
    }
    .container { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; }
    .section { padding: 84px 0; }
    .section-head { max-width: 700px; margin-bottom: 34px; }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--brand);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: .08em;
      margin-bottom: 12px;
    }
    .eyebrow::before {
      content: "";
      width: 22px;
      height: 3px;
      border-radius: 99px;
      background: var(--brand);
    }
    .muted { color: var(--muted); }

    .site-header {
      background: rgba(255,255,255,.96);
      border-bottom: 1px solid var(--line);
      position: relative;
      z-index: 10;
    }
    .brand-row {
      min-height: 84px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
    }
    .brand-mark {
      width: 42px;
      height: 42px;
      flex: 0 0 42px;
      display: grid;
      place-items: center;
      color: white;
      background: var(--brand);
      border-radius: 13px;
      box-shadow: 0 8px 18px rgba(40,104,216,.25);
    }
    .brand-title {
      display: block;
      font-weight: 900;
      letter-spacing: -.03em;
      font-size: 18px;
      white-space: nowrap;
    }
    .brand-sub {
      display: block;
      color: var(--muted);
      font-size: 12px;
      margin-left: 4px;
    }
    .brand-tools { display: flex; align-items: center; gap: 12px; }
    .search-mini {
      display: flex;
      align-items: center;
      border: 1px solid var(--line);
      background: white;
      border-radius: 12px;
      overflow: hidden;
    }
    .search-mini input {
      width: 150px;
      border: 0;
      padding: 9px 11px;
      color: var(--ink);
      outline: none;
      background: transparent;
    }
    .search-mini button {
      border: 0;
      background: transparent;
      color: var(--brand);
      padding: 9px 12px;
    }
    .search-mini button:hover { background: var(--soft-blue); }
    .age-note {
      color: #8a6a36;
      background: var(--warm);
      border-radius: 999px;
      padding: 5px 10px;
      font-size: 12px;
      white-space: nowrap;
      font-weight: 700;
    }
    .icon-nav {
      border-top: 1px solid #edf2f8;
      padding: 14px 0 17px;
    }
    .nav-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
    }
    .nav-item {
      display: flex;
      align-items: center;
      gap: 11px;
      padding: 11px 14px;
      min-height: 58px;
      border: 1px solid transparent;
      border-radius: 15px;
      color: #52708f;
    }
    .nav-item:hover {
      background: #f1f6fd;
      border-color: var(--line);
      transform: translateY(-2px);
      color: var(--brand);
    }
    .nav-item.active {
      background: #eaf2ff;
      color: var(--brand);
      border-color: #c9ddfa;
    }
    .nav-icon {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      border-radius: 10px;
      background: #edf4ff;
      color: var(--brand);
      flex: 0 0 34px;
    }
    .nav-item:nth-child(2) .nav-icon { background: var(--aqua); color: #278b91; }
    .nav-item:nth-child(3) .nav-icon { background: var(--violet); color: #7869bb; }
    .nav-label { font-weight: 800; font-size: 14px; }
    .nav-desc { display: block; font-size: 11px; color: var(--muted); font-weight: 500; }

    .page-intro {
      padding: 54px 0 40px;
      background: linear-gradient(180deg, #ffffff 0%, #f5f8fc 100%);
    }
    .breadcrumbs {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      color: var(--muted);
      font-size: 13px;
      margin-bottom: 28px;
    }
    .breadcrumbs a:hover { text-decoration: underline; }
    .crumb-current { color: var(--ink); font-weight: 700; }
    .intro-grid {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 330px;
      gap: 44px;
      align-items: end;
    }
    .page-intro h1 {
      margin: 0;
      max-width: 760px;
      font-size: clamp(32px, 4vw, 54px);
      line-height: 1.18;
      letter-spacing: -.045em;
      font-weight: 900;
    }
    .intro-text {
      max-width: 720px;
      color: var(--muted);
      font-size: 16px;
      margin: 20px 0 0;
    }
    .intro-side {
      padding: 20px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255,255,255,.82);
      box-shadow: var(--shadow);
    }
    .intro-side-title { font-weight: 900; font-size: 15px; margin-bottom: 13px; }
    .stat-line {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      padding: 11px 0;
      border-top: 1px solid #edf2f8;
      color: var(--muted);
      font-size: 13px;
    }
    .stat-line strong { color: var(--ink); font-size: 15px; }

    .filter-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      margin-bottom: 22px;
      padding: 14px 16px;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 16px;
      box-shadow: 0 8px 24px rgba(39, 76, 133, .06);
    }
    .filter-chips { display: flex; flex-wrap: wrap; gap: 8px; }
    .filter-chip {
      border: 1px solid var(--line);
      background: #fff;
      color: #59718c;
      border-radius: 999px;
      padding: 7px 13px;
      font-size: 12px;
      transition: .2s ease;
    }
    .filter-chip:hover, .filter-chip.active {
      color: var(--brand);
      background: var(--soft-blue);
      border-color: #c4dafa;
    }
    .select-box {
      color: var(--ink);
      border: 1px solid var(--line);
      background: #f9fbfe;
      border-radius: 10px;
      padding: 8px 11px;
      font-size: 13px;
    }

    .browse-layout {
      display: grid;
      grid-template-columns: 230px minmax(0, 1fr);
      gap: 24px;
      align-items: start;
    }
    .filter-panel {
      position: sticky;
      top: 18px;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 21px;
      box-shadow: var(--shadow);
    }
    .filter-panel h2 {
      margin: 0 0 18px;
      font-size: 16px;
      font-weight: 900;
    }
    .filter-group { padding: 17px 0; border-top: 1px solid #edf2f8; }
    .filter-group:first-of-type { border-top: 0; padding-top: 0; }
    .filter-label {
      display: block;
      color: #57708e;
      font-size: 12px;
      font-weight: 800;
      margin-bottom: 10px;
    }
    .check-row {
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--muted);
      font-size: 13px;
      margin: 9px 0;
    }
    .check-row input { accent-color: var(--brand); width: 15px; height: 15px; }
    .filter-reset {
      width: 100%;
      border: 1px solid #c9d9ec;
      color: var(--brand);
      background: #fff;
      border-radius: 10px;
      min-height: 40px;
      font-size: 13px;
      font-weight: 800;
      margin-top: 7px;
    }
    .filter-reset:hover { background: var(--soft-blue); border-color: var(--brand); }

    .list-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 15px;
      gap: 16px;
    }
    .list-top h2 { margin: 0; font-size: 21px; font-weight: 900; }
    .list-top span { color: var(--muted); font-size: 13px; }
    .content-list { display: grid; gap: 14px; }
    .content-card {
      display: grid;
      grid-template-columns: 142px minmax(0, 1fr) auto;
      gap: 20px;
      align-items: center;
      padding: 15px;
      transition: transform .2s ease, box-shadow .2s ease;
    }
    .content-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow), 0 9px 20px rgba(40,104,216,.07);
    }
    .cover {
      aspect-ratio: 16 / 10;
      border-radius: 14px;
      border: 1px solid #d9e6f4;
      background:
        linear-gradient(135deg, rgba(40,104,216,.14), transparent 55%),
        linear-gradient(45deg, #eaf3ff, #e9f6f4);
      position: relative;
      overflow: hidden;
      display: grid;
      place-items: center;
      color: var(--brand);
    }
    .cover::after {
      content: "";
      position: absolute;
      width: 90px;
      height: 90px;
      border: 1px solid rgba(40,104,216,.18);
      border-radius: 50%;
      right: -28px;
      bottom: -36px;
    }
    .cover svg { position: relative; z-index: 1; }
    .card-main h3 { margin: 0 0 7px; font-size: 17px; font-weight: 900; }
    .card-main p { margin: 0 0 10px; color: var(--muted); font-size: 13px; line-height: 1.7; }
    .meta-row { display: flex; flex-wrap: wrap; gap: 7px; align-items: center; }
    .badge {
      display: inline-flex;
      align-items: center;
      min-height: 24px;
      padding: 3px 9px;
      border-radius: 999px;
      background: var(--soft-blue);
      color: var(--brand);
      font-size: 11px;
      font-weight: 800;
    }
    .badge.aqua { background: var(--aqua); color: #278b91; }
    .badge.violet { background: var(--violet); color: #7869bb; }
    .badge.warm { background: var(--warm); color: #a36822; }
    .card-meta { color: var(--muted); font-size: 11px; }
    .card-action { white-space: nowrap; }
    .btn {
      display: inline-flex;
      justify-content: center;
      align-items: center;
      gap: 8px;
      min-height: 44px;
      border-radius: 11px;
      border: 1px solid transparent;
      padding: 0 16px;
      font-weight: 800;
      font-size: 13px;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
    }
    .btn-primary {
      color: #fff;
      background: var(--brand);
      box-shadow: 0 8px 18px rgba(40,104,216,.22);
    }
    .btn-primary:hover {
      color: #fff;
      background: var(--brand-dark);
      transform: translateY(-2px);
      box-shadow: 0 12px 24px rgba(40,104,216,.28);
    }
    .btn-primary:active { transform: translateY(0); }
    .btn-secondary { color: var(--brand); background: #fff; border-color: #c9d9ec; }
    .btn-secondary:hover { background: #eef5ff; border-color: var(--brand); transform: translateY(-2px); }
    .btn[disabled] { opacity: .5; cursor: not-allowed; transform: none; box-shadow: none; }

    .pagination {
      display: flex;
      justify-content: center;
      gap: 8px;
      margin-top: 25px;
    }
    .page-number {
      min-width: 38px;
      height: 38px;
      display: grid;
      place-items: center;
      border: 1px solid var(--line);
      border-radius: 10px;
      background: #fff;
      color: var(--muted);
      font-size: 13px;
      font-weight: 800;
    }
    .page-number:hover, .page-number.current { color: var(--brand); background: var(--soft-blue); border-color: #c4dafa; }

    .path-section { background: #eef5fd; }
    .path-grid { display: grid; grid-template-columns: 1fr 1.3fr; gap: 38px; align-items: center; }
    .path-copy h2, .related h2, .faq-section h2, .cta-box h2 { margin: 0 0 13px; font-size: clamp(25px, 3vw, 36px); line-height: 1.25; font-weight: 900; letter-spacing: -.035em; }
    .path-copy p { color: var(--muted); margin: 0; }
    .path-steps { display: grid; gap: 11px; }
    .path-step {
      display: grid;
      grid-template-columns: 45px 1fr;
      gap: 14px;
      align-items: center;
      padding: 15px 17px;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 15px;
    }
    .step-no {
      width: 37px;
      height: 37px;
      display: grid;
      place-items: center;
      border-radius: 11px;
      background: var(--soft-blue);
      color: var(--brand);
      font-weight: 900;
      font-size: 13px;
    }
    .path-step:nth-child(2) .step-no { background: var(--aqua); color: #278b91; }
    .path-step:nth-child(3) .step-no { background: var(--violet); color: #7869bb; }
    .path-step strong { display: block; font-size: 14px; }
    .path-step span { color: var(--muted); font-size: 12px; }

    .related-grid { display: grid; grid-template-columns: 1.3fr .7fr; gap: 18px; }
    .related-card {
      min-height: 190px;
      padding: 25px;
      border-radius: var(--radius);
      border: 1px solid var(--line);
      background: #fff;
      box-shadow: var(--shadow);
      position: relative;
      overflow: hidden;
    }
    .related-card.primary { background: #eaf2ff; border-color: #c9ddfa; }
    .related-card h3 { margin: 0 0 8px; font-size: 20px; font-weight: 900; }
    .related-card p { max-width: 470px; color: var(--muted); font-size: 13px; margin: 0 0 20px; }
    .related-card.primary p { color: #557295; }
    .related-mark {
      position: absolute;
      right: 24px;
      top: 28px;
      width: 58px;
      height: 58px;
      display: grid;
      place-items: center;
      border-radius: 18px;
      background: rgba(255,255,255,.8);
      color: var(--brand);
    }

    .faq-section { background: #fff; }
    .faq-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 45px; align-items: start; }
    .faq-list { display: grid; gap: 10px; }
    .faq-item { overflow: hidden; box-shadow: 0 7px 22px rgba(39,76,133,.06); }
    .faq-item summary {
      list-style: none;
      cursor: pointer;
      padding: 17px 20px;
      font-size: 14px;
      font-weight: 800;
      position: relative;
      padding-right: 48px;
    }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after {
      content: "+";
      position: absolute;
      right: 19px;
      top: 13px;
      color: var(--brand);
      font-size: 22px;
      font-weight: 400;
    }
    .faq-item[open] summary { color: var(--brand); background: #f8fbff; }
    .faq-item[open] summary::after { content: "−"; }
    .faq-answer { padding: 0 20px 18px; color: var(--muted); font-size: 13px; }

    .cta-section { padding: 70px 0; }
    .cta-box {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 30px;
      padding: 34px 38px;
      background: #eaf2ff;
      border: 1px solid #c9ddfa;
      border-radius: 25px;
    }
    .cta-box p { color: #5b7390; margin: 0; max-width: 670px; font-size: 14px; }
    .cta-actions { display: flex; flex-wrap: wrap; gap: 10px; flex: 0 0 auto; }

    .site-footer { background: #183153; color: #e8f0fa; padding: 54px 0 22px; }
    .footer-grid { display: grid; grid-template-columns: 1.35fr .8fr .8fr 1.1fr; gap: 35px; }
    .footer-brand { color: #fff; font-weight: 900; font-size: 18px; }
    .footer-title { color: #fff; font-weight: 800; font-size: 14px; margin-bottom: 12px; }
    .footer-note { color: #a9bdd4; font-size: 12px; line-height: 1.8; margin: 0; }
    .footer-links { display: grid; gap: 8px; }
    .footer-links a { color: #b8cbe0; font-size: 13px; }
    .footer-links a:hover { color: #fff; text-decoration: underline; }
    .copyright {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      border-top: 1px solid rgba(220,231,243,.16);
      margin-top: 34px;
      padding-top: 18px;
      color: #91a9c2;
      font-size: 11px;
    }

    @media (max-width: 1024px) {
      .intro-grid, .path-grid, .faq-grid { grid-template-columns: 1fr; }
      .intro-side { max-width: 430px; }
      .browse-layout { grid-template-columns: 205px minmax(0,1fr); }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .container { width: min(var(--container), calc(100% - 28px)); }
      .brand-row { min-height: 72px; }
      .brand-sub, .age-note { display: none; }
      .brand-title { font-size: 16px; }
      .brand-tools { margin-left: auto; }
      .search-mini input { width: 110px; }
      .nav-grid { display: flex; overflow-x: auto; gap: 8px; padding-bottom: 3px; scrollbar-width: thin; }
      .nav-item { min-width: 190px; }
      .page-intro { padding-top: 38px; }
      .browse-layout { display: block; }
      .filter-panel { position: static; margin-bottom: 20px; }
      .filter-panel .filter-group { display: inline-block; vertical-align: top; width: 48%; padding-right: 12px; }
      .filter-panel h2 { margin-bottom: 12px; }
      .filter-reset { max-width: 180px; }
      .content-card { grid-template-columns: 116px minmax(0,1fr); }
      .card-action { grid-column: 2; }
      .related-grid { grid-template-columns: 1fr; }
      .cta-box { display: block; padding: 28px 24px; }
      .cta-actions { margin-top: 21px; }
    }
    @media (max-width: 520px) {
      .section { padding: 58px 0; }
      .brand-row { gap: 10px; }
      .brand-mark { width: 37px; height: 37px; flex-basis: 37px; border-radius: 11px; }
      .brand-title { font-size: 14px; }
      .search-mini input { width: 88px; font-size: 12px; }
      .intro-grid { gap: 22px; }
      .page-intro h1 { font-size: 31px; }
      .filter-bar { align-items: flex-start; flex-direction: column; }
      .filter-panel .filter-group { display: block; width: 100%; padding-right: 0; }
      .content-card { grid-template-columns: 1fr; gap: 13px; }
      .cover { width: 100%; aspect-ratio: 16 / 7; }
      .card-action { grid-column: auto; }
      .card-action .btn { width: 100%; }
      .copyright { flex-direction: column; gap: 7px; }
      .footer-grid { grid-template-columns: 1fr; gap: 24px; }
      .cta-actions .btn { width: 100%; }
    }