/* roulang page: index */
:root{
      --primary:#2F6F9F;
      --primary-dark:#245C85;
      --primary-soft:#E6F1F7;
      --secondary:#6E93A8;
      --accent:#D69A4C;
      --accent-soft:#FFF2DD;
      --page-bg:#F5F8FB;
      --card-bg:#FFFFFF;
      --surface-soft:#EAF2F7;
      --notice:#FFF7E8;
      --text-main:#1E2A32;
      --text-muted:#657782;
      --border-soft:#DDE8EF;
      --shadow-sm:0 10px 28px rgba(38,76,105,.08);
      --shadow-md:0 18px 45px rgba(38,76,105,.12);
      --shadow-lg:0 26px 70px rgba(38,76,105,.16);
      --radius-sm:14px;
      --radius-md:18px;
      --radius-lg:24px;
      --radius-pill:999px;
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
      color:var(--text-main);
      background:
        radial-gradient(circle at top left,rgba(47,111,159,.12),transparent 34%),
        radial-gradient(circle at 85% 8%,rgba(214,154,76,.12),transparent 28%),
        var(--page-bg);
      line-height:1.75;
      font-size:16px;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none;transition:all .22s ease}
    a:hover{color:var(--primary)}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(47,111,159,.18)}
    .container{max-width:var(--container)}
    .section-pad{padding:86px 0}
    .section-pad-sm{padding:64px 0}
    .section-title{margin-bottom:34px}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 13px;
      border-radius:var(--radius-pill);
      background:rgba(47,111,159,.1);
      color:var(--primary-dark);
      font-weight:700;
      font-size:13px;
      letter-spacing:.02em;
      border:1px solid rgba(47,111,159,.12);
    }
    h1,h2,h3,h4{color:var(--text-main);letter-spacing:-.02em;line-height:1.2}
    h1{font-size:clamp(32px,4.4vw,52px);font-weight:800}
    h2{font-size:clamp(25px,3vw,34px);font-weight:800}
    h3{font-size:20px;font-weight:760}
    .lead-text{font-size:18px;color:var(--text-muted);line-height:1.85}
    .text-muted-custom{color:var(--text-muted)}
    .site-header{
      position:sticky;
      top:0;
      z-index:1000;
      background:rgba(255,255,255,.94);
      border-bottom:1px solid rgba(221,232,239,.9);
      box-shadow:0 10px 30px rgba(38,76,105,.06);
      backdrop-filter:saturate(160%) blur(12px);
    }
    .nav-top{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      padding:16px 0 12px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
      font-weight:820;
      color:var(--text-main);
    }
    .brand-mark{
      width:42px;height:42px;border-radius:15px;
      background:linear-gradient(135deg,var(--primary),#8AAFC1);
      display:grid;place-items:center;
      color:#fff;
      box-shadow:0 12px 26px rgba(47,111,159,.25);
      position:relative;
      flex:0 0 auto;
    }
    .brand-mark:before{
      content:"";
      width:18px;height:13px;
      border:2px solid #fff;
      border-radius:4px;
      box-shadow:9px 0 0 rgba(255,255,255,.35);
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.25;
      white-space:normal;
    }
    .brand-title{font-size:17px}
    .brand-sub{font-size:12px;color:var(--text-muted);font-weight:600}
    .seg-nav-wrap{
      padding:0 0 14px;
      overflow-x:auto;
      scrollbar-width:none;
    }
    .seg-nav-wrap::-webkit-scrollbar{display:none}
    .seg-nav{
      display:flex;
      gap:10px;
      align-items:center;
      min-width:max-content;
    }
    .seg-nav a{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      padding:9px 16px;
      border-radius:var(--radius-pill);
      background:var(--surface-soft);
      color:#355464;
      font-weight:700;
      font-size:14px;
      border:1px solid transparent;
    }
    .seg-nav a:hover{
      background:#fff;
      border-color:rgba(47,111,159,.2);
      transform:translateY(-1px);
      box-shadow:var(--shadow-sm);
    }
    .seg-nav a.active{
      background:var(--primary);
      color:#fff;
      border-color:var(--primary);
      box-shadow:0 12px 24px rgba(47,111,159,.2);
    }
    .btn{
      border-radius:var(--radius-pill);
      padding:12px 22px;
      font-weight:760;
      transition:all .22s ease;
      border-width:1px;
    }
    .btn-primary{
      --bs-btn-bg:var(--primary);
      --bs-btn-border-color:var(--primary);
      --bs-btn-hover-bg:var(--primary-dark);
      --bs-btn-hover-border-color:var(--primary-dark);
      --bs-btn-active-bg:var(--primary-dark);
      --bs-btn-active-border-color:var(--primary-dark);
      box-shadow:0 14px 28px rgba(47,111,159,.22);
    }
    .btn-primary:hover,.btn-outline-primary:hover{transform:translateY(-2px)}
    .btn-outline-primary{
      --bs-btn-color:var(--primary);
      --bs-btn-border-color:rgba(47,111,159,.42);
      --bs-btn-hover-bg:var(--primary-soft);
      --bs-btn-hover-border-color:var(--primary);
      --bs-btn-hover-color:var(--primary-dark);
      background:#fff;
    }
    .btn:focus-visible,.seg-nav a:focus-visible,.form-control:focus{
      outline:3px solid rgba(47,111,159,.2);
      outline-offset:2px;
      box-shadow:0 0 0 .25rem rgba(47,111,159,.14);
    }
    .hero{
      padding:74px 0 48px;
      position:relative;
    }
    .hero:before{
      content:"";
      position:absolute;
      inset:24px 20px auto auto;
      width:420px;height:420px;
      background:
        linear-gradient(90deg,rgba(47,111,159,.08) 1px,transparent 1px),
        linear-gradient(rgba(47,111,159,.08) 1px,transparent 1px);
      background-size:24px 24px;
      border-radius:50%;
      opacity:.55;
      pointer-events:none;
    }
    .hero-copy{position:relative;z-index:1}
    .hero h1{margin:22px 0 20px}
    .hero-actions{
      display:flex;
      gap:14px;
      flex-wrap:wrap;
      margin:30px 0 24px;
    }
    .notice-bar{
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding:15px 17px;
      border-radius:var(--radius-md);
      background:var(--notice);
      border:1px solid rgba(214,154,76,.24);
      color:#6d5632;
      font-weight:650;
      box-shadow:0 10px 22px rgba(214,154,76,.08);
    }
    .notice-icon{
      width:28px;height:28px;border-radius:50%;
      display:grid;place-items:center;
      background:rgba(214,154,76,.18);
      color:#9b6827;
      flex:0 0 auto;
      font-weight:800;
    }
    .hero-panel{
      background:rgba(255,255,255,.9);
      border:1px solid rgba(221,232,239,.95);
      border-radius:30px;
      padding:22px;
      box-shadow:var(--shadow-lg);
      position:relative;
      overflow:hidden;
    }
    .hero-panel:after{
      content:"";
      position:absolute;
      right:-80px;top:-80px;
      width:220px;height:220px;
      background:rgba(47,111,159,.1);
      border-radius:50%;
    }
    .feature-cover{
      min-height:260px;
      border-radius:24px;
      padding:24px;
      color:#fff;
      background:
        linear-gradient(135deg,rgba(30,42,50,.84),rgba(47,111,159,.72)),
        repeating-linear-gradient(90deg,rgba(255,255,255,.18) 0 8px,transparent 8px 18px),
        radial-gradient(circle at 80% 15%,rgba(214,154,76,.72),transparent 34%);
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      position:relative;
      overflow:hidden;
    }
    .feature-cover .tag-light{
      align-self:flex-start;
      padding:6px 12px;
      border-radius:var(--radius-pill);
      background:rgba(255,255,255,.18);
      border:1px solid rgba(255,255,255,.22);
      font-weight:750;
      font-size:13px;
    }
    .metric-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:14px;
      margin-top:14px;
    }
    .metric-card{
      background:var(--card-bg);
      border:1px solid var(--border-soft);
      border-radius:20px;
      padding:18px;
      box-shadow:var(--shadow-sm);
      transition:all .22s ease;
    }
    .metric-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
    .metric-card strong{display:block;font-size:28px;color:var(--primary);line-height:1.1}
    .tag-cloud{
      display:flex;flex-wrap:wrap;gap:9px;margin-top:15px;
    }
    .chip,.badge-soft{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:7px 12px;
      border-radius:var(--radius-pill);
      background:var(--surface-soft);
      color:#36596c;
      border:1px solid rgba(47,111,159,.1);
      font-size:13px;
      font-weight:720;
    }
    .chip:hover{background:#fff;border-color:rgba(47,111,159,.25);color:var(--primary-dark)}
    .badge-accent{background:var(--accent-soft);color:#95652A;border-color:rgba(214,154,76,.25)}
    .card-modern{
      background:var(--card-bg);
      border:1px solid var(--border-soft);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow-sm);
      transition:all .24s ease;
      height:100%;
      overflow:hidden;
    }
    .card-modern:hover{
      transform:translateY(-4px);
      box-shadow:var(--shadow-md);
      border-color:rgba(47,111,159,.28);
    }
    .feature-card{
      padding:28px;
      min-height:100%;
    }
    .feature-card.large{min-height:285px}
    .icon-bubble{
      width:48px;height:48px;border-radius:17px;
      display:grid;place-items:center;
      background:var(--primary-soft);
      color:var(--primary-dark);
      font-weight:850;
      margin-bottom:18px;
      border:1px solid rgba(47,111,159,.12);
    }
    .feature-card.accent .icon-bubble{background:var(--accent-soft);color:#946326;border-color:rgba(214,154,76,.2)}
    .clean-list{list-style:none;padding:0;margin:18px 0 0}
    .clean-list li{
      display:flex;gap:10px;align-items:flex-start;
      margin:10px 0;color:var(--text-muted);
    }
    .clean-list li:before{
      content:"";
      width:8px;height:8px;border-radius:50%;
      background:var(--accent);
      margin-top:10px;flex:0 0 auto;
    }
    .magazine-grid{
      column-count:3;
      column-gap:24px;
    }
    .topic-card{
      break-inside:avoid;
      margin:0 0 24px;
      padding:24px;
    }
    .topic-card.tall{padding-bottom:42px}
    .abstract-thumb{
      height:150px;
      border-radius:20px;
      margin:-6px -6px 20px;
      background:
        linear-gradient(135deg,rgba(47,111,159,.9),rgba(138,175,193,.7)),
        radial-gradient(circle at 75% 25%,rgba(214,154,76,.7),transparent 36%);
      position:relative;
      overflow:hidden;
    }
    .abstract-thumb:before{
      content:"";
      position:absolute;
      inset:18px;
      border:1px solid rgba(255,255,255,.34);
      border-radius:16px;
    }
    .abstract-thumb:after{
      content:"";
      position:absolute;
      left:22px;bottom:20px;
      width:78px;height:12px;border-radius:999px;
      background:rgba(255,255,255,.55);
      box-shadow:0 24px 0 rgba(255,255,255,.22),120px -54px 0 rgba(255,255,255,.18);
    }
    .meta-line{
      display:flex;
      flex-wrap:wrap;
      gap:8px 14px;
      color:var(--text-muted);
      font-size:13px;
      margin:14px 0;
    }
    .link-arrow{
      display:inline-flex;
      align-items:center;
      gap:7px;
      color:var(--primary);
      font-weight:800;
    }
    .link-arrow:hover{gap:12px;color:var(--primary-dark)}
    .dark-eval{
      background:linear-gradient(135deg,#1E2A32,#284C61);
      color:#EAF2F7;
      border-radius:32px;
      padding:38px;
      box-shadow:var(--shadow-lg);
      position:relative;
      overflow:hidden;
    }
    .dark-eval:before{
      content:"";
      position:absolute;
      right:-120px;top:-110px;
      width:310px;height:310px;border-radius:50%;
      background:rgba(214,154,76,.16);
    }
    .dark-eval h2,.dark-eval h3{color:#fff}
    .score-card{
      padding:22px;
      border-radius:22px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.14);
      height:100%;
    }
    .score-card .score{font-size:34px;color:#FFD89F;font-weight:850}
    .compare-card{
      padding:26px;
      position:relative;
    }
    .compare-card.recommended{
      border-color:rgba(214,154,76,.45);
      box-shadow:0 22px 55px rgba(214,154,76,.14);
    }
    .compare-card.recommended:before{
      content:"推荐路径";
      position:absolute;
      top:18px;right:18px;
      border-radius:999px;
      padding:5px 10px;
      background:var(--accent-soft);
      color:#8b5c21;
      font-size:12px;
      font-weight:800;
    }
    .accordion{
      --bs-accordion-border-color:var(--border-soft);
      --bs-accordion-btn-focus-box-shadow:0 0 0 .25rem rgba(47,111,159,.14);
      --bs-accordion-active-bg:var(--primary-soft);
      --bs-accordion-active-color:var(--primary-dark);
    }
    .accordion-item{
      border:1px solid var(--border-soft)!important;
      border-radius:18px!important;
      overflow:hidden;
      margin-bottom:14px;
      box-shadow:var(--shadow-sm);
    }
    .accordion-button{
      font-weight:780;
      color:var(--text-main);
      padding:18px 20px;
      background:#fff;
    }
    .accordion-button:not(.collapsed){
      border-left:4px solid var(--primary);
      box-shadow:none;
    }
    .accordion-body{color:var(--text-muted);background:#fff;line-height:1.8}
    .cta-box{
      border-radius:32px;
      padding:42px;
      background:
        linear-gradient(135deg,rgba(234,242,247,.98),rgba(255,255,255,.96)),
        radial-gradient(circle at top right,rgba(214,154,76,.16),transparent 30%);
      border:1px solid var(--border-soft);
      box-shadow:var(--shadow-md);
    }
    .form-control,.form-select{
      border-radius:14px;
      border:1px solid var(--border-soft);
      padding:12px 14px;
      background:#FBFDFF;
      color:var(--text-main);
    }
    .form-control:focus,.form-select:focus{
      border-color:rgba(47,111,159,.58);
      background:#fff;
    }
    .site-footer{
      padding:56px 0 26px;
      background:#ECF4F8;
      border-top:1px solid var(--border-soft);
      color:#45606d;
    }
    .footer-brand{
      display:flex;align-items:center;gap:12px;font-weight:850;color:var(--text-main);margin-bottom:14px;
    }
    .footer-links{display:flex;flex-direction:column;gap:9px}
    .footer-links a{color:#45606d;font-weight:650}
    .footer-links a:hover{color:var(--primary);transform:translateX(3px)}
    .copyright{
      border-top:1px solid rgba(47,111,159,.13);
      margin-top:34px;
      padding-top:20px;
      font-size:14px;
      color:var(--text-muted);
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
    }
    @media (max-width: 991.98px){
      .hero{padding-top:52px}
      .hero-panel{margin-top:28px}
      .magazine-grid{column-count:2}
      .section-pad{padding:68px 0}
      .dark-eval,.cta-box{padding:30px}
    }
    @media (max-width: 767.98px){
      .nav-top{align-items:flex-start;flex-direction:column}
      .nav-top .btn{width:100%;justify-content:center}
      .brand-title{font-size:15px}
      .brand-sub{font-size:11px}
      .hero-actions .btn{flex:1 1 100%}
      .metric-grid{grid-template-columns:1fr}
      .magazine-grid{column-count:1}
      .section-pad{padding:56px 0}
      .section-title{margin-bottom:24px}
      .notice-bar{font-size:14px}
      .feature-card.large{min-height:auto}
      .copyright{flex-direction:column}
    }
    @media (max-width: 520px){
      body{font-size:15px}
      .brand-mark{width:38px;height:38px}
      .hero-panel{padding:16px;border-radius:24px}
      .feature-cover{min-height:230px;padding:20px}
      .metric-card,.topic-card,.feature-card,.compare-card{padding:20px}
      .cta-box,.dark-eval{padding:24px;border-radius:24px}
      .seg-nav a{padding:8px 13px;font-size:13px}
    }

/* roulang page: category1 */
:root {
      --primary: #2F6F9F;
      --primary-dark: #245A82;
      --primary-soft: #E5F1F8;
      --secondary: #6E93A8;
      --accent: #D69A4C;
      --accent-soft: #FFF4E5;
      --page-bg: #F5F8FB;
      --card-bg: #FFFFFF;
      --card-soft: #FBFDFF;
      --surface-soft: #EAF2F7;
      --notice: #FFF8E8;
      --text-main: #1E2A32;
      --text-muted: #657782;
      --border-soft: #DDE8EF;
      --shadow-soft: 0 18px 45px rgba(38, 76, 105, .10);
      --shadow-hover: 0 24px 55px rgba(38, 76, 105, .16);
      --radius-lg: 24px;
      --radius-md: 18px;
      --radius-sm: 14px;
      --section-space: 84px;
      --container-max: 1200px;
      --font-cn: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: var(--font-cn);
      color: var(--text-main);
      background:
        radial-gradient(circle at 8% 12%, rgba(47, 111, 159, .08), transparent 30%),
        radial-gradient(circle at 92% 4%, rgba(214, 154, 76, .10), transparent 28%),
        linear-gradient(180deg, #F8FBFD 0%, var(--page-bg) 44%, #FFFFFF 100%);
      line-height: 1.75;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
    }

    a {
      color: var(--primary);
      text-decoration: none;
      transition: color .22s ease, background-color .22s ease, border-color .22s ease, transform .22s ease;
    }

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

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

    button,
    input,
    textarea,
    select {
      font: inherit;
    }

    .container {
      max-width: var(--container-max);
    }

    .section {
      padding: var(--section-space) 0;
    }

    .section-tight {
      padding: 58px 0;
    }

    .section-title {
      max-width: 760px;
      margin-bottom: 32px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      background: var(--primary-soft);
      color: var(--primary-dark);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: .02em;
      margin-bottom: 16px;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 0 5px rgba(214, 154, 76, .14);
    }

    h1,
    h2,
    h3,
    h4,
    h5 {
      color: var(--text-main);
      letter-spacing: -.02em;
      line-height: 1.25;
      font-weight: 800;
    }

    h1 {
      font-size: clamp(2rem, 4vw, 3.2rem);
      margin-bottom: 18px;
    }

    h2 {
      font-size: clamp(1.65rem, 2.5vw, 2.15rem);
      margin-bottom: 14px;
    }

    h3 {
      font-size: 1.18rem;
    }

    .lead {
      color: var(--text-muted);
      font-size: 1.08rem;
      line-height: 1.85;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255, 255, 255, .94);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(221, 232, 239, .9);
      box-shadow: 0 10px 30px rgba(38, 76, 105, .06);
    }

    .nav-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
      padding: 18px 0 12px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 13px;
      color: var(--text-main);
      min-width: 0;
    }

    .brand:hover {
      color: var(--text-main);
      transform: translateY(-1px);
    }

    .brand-mark {
      width: 44px;
      height: 44px;
      flex: 0 0 44px;
      border-radius: 16px;
      background:
        linear-gradient(135deg, rgba(47, 111, 159, .95), rgba(110, 147, 168, .92)),
        radial-gradient(circle at 70% 25%, rgba(255, 255, 255, .55), transparent 28%);
      position: relative;
      box-shadow: 0 14px 30px rgba(47, 111, 159, .22);
      overflow: hidden;
    }

    .brand-mark::before {
      content: "";
      position: absolute;
      inset: 10px 9px;
      border: 2px solid rgba(255, 255, 255, .78);
      border-radius: 8px;
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      left: 18px;
      top: 15px;
      width: 0;
      height: 0;
      border-top: 7px solid transparent;
      border-bottom: 7px solid transparent;
      border-left: 10px solid rgba(255, 255, 255, .95);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      min-width: 0;
    }

    .brand-title {
      font-weight: 800;
      font-size: 1.02rem;
      line-height: 1.25;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .brand-sub {
      color: var(--text-muted);
      font-size: .82rem;
      line-height: 1.35;
      margin-top: 2px;
    }

    .seg-nav-wrap {
      padding: 0 0 14px;
      overflow-x: auto;
      scrollbar-width: none;
    }

    .seg-nav-wrap::-webkit-scrollbar {
      display: none;
    }

    .seg-nav {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px;
      min-width: max-content;
      border: 1px solid var(--border-soft);
      border-radius: 999px;
      background: #F7FBFE;
    }

    .seg-nav a {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 38px;
      padding: 8px 18px;
      border-radius: 999px;
      color: var(--text-muted);
      font-weight: 700;
      font-size: .94rem;
    }

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

    .seg-nav a.active {
      background: var(--primary);
      color: #FFFFFF;
      box-shadow: 0 12px 24px rgba(47, 111, 159, .22);
    }

    .btn {
      border-radius: 999px;
      padding: 11px 20px;
      font-weight: 750;
      border-width: 1px;
      transition: transform .22s ease, box-shadow .22s ease, background-color .22s ease, border-color .22s ease, color .22s ease;
    }

    .btn-primary {
      --bs-btn-bg: var(--primary);
      --bs-btn-border-color: var(--primary);
      --bs-btn-hover-bg: var(--primary-dark);
      --bs-btn-hover-border-color: var(--primary-dark);
      --bs-btn-active-bg: var(--primary-dark);
      --bs-btn-active-border-color: var(--primary-dark);
      box-shadow: 0 14px 28px rgba(47, 111, 159, .22);
    }

    .btn-primary:hover,
    .btn-outline-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 18px 34px rgba(47, 111, 159, .25);
    }

    .btn-outline-primary {
      --bs-btn-color: var(--primary);
      --bs-btn-border-color: rgba(47, 111, 159, .32);
      --bs-btn-hover-bg: var(--primary-soft);
      --bs-btn-hover-border-color: rgba(47, 111, 159, .45);
      --bs-btn-hover-color: var(--primary-dark);
      --bs-btn-active-bg: var(--primary-soft);
      --bs-btn-active-border-color: var(--primary);
      background: rgba(255, 255, 255, .72);
    }

    .btn:focus-visible,
    .seg-nav a:focus-visible,
    .chip:focus-visible,
    .footer-links a:focus-visible,
    .article-card:focus-within {
      outline: 3px solid rgba(214, 154, 76, .35);
      outline-offset: 3px;
    }

    .category-hero {
      padding: 62px 0 44px;
      position: relative;
      overflow: hidden;
    }

    .category-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(47, 111, 159, .08) 1px, transparent 1px),
        linear-gradient(180deg, rgba(47, 111, 159, .06) 1px, transparent 1px);
      background-size: 42px 42px;
      mask-image: linear-gradient(180deg, rgba(0, 0, 0, .7), transparent 75%);
      pointer-events: none;
    }

    .category-hero .container {
      position: relative;
      z-index: 1;
    }

    .breadcrumb-wrap {
      display: flex;
      align-items: center;
      gap: 9px;
      flex-wrap: wrap;
      color: var(--text-muted);
      font-size: .92rem;
      margin-bottom: 18px;
    }

    .breadcrumb-wrap a {
      color: var(--primary);
      font-weight: 700;
    }

    .breadcrumb-wrap .sep {
      color: #A4B4BF;
    }

    .hero-panel {
      padding: 34px;
      border-radius: 30px;
      background:
        linear-gradient(135deg, rgba(255, 255, 255, .96), rgba(251, 253, 255, .92)),
        radial-gradient(circle at 92% 10%, rgba(214, 154, 76, .12), transparent 34%);
      border: 1px solid rgba(221, 232, 239, .92);
      box-shadow: var(--shadow-soft);
    }

    .hero-summary-card {
      height: 100%;
      padding: 28px;
      border-radius: 28px;
      background:
        linear-gradient(145deg, rgba(47, 111, 159, .96), rgba(32, 82, 119, .95)),
        radial-gradient(circle at 18% 20%, rgba(255, 255, 255, .25), transparent 28%);
      color: #FFFFFF;
      box-shadow: 0 22px 48px rgba(47, 111, 159, .24);
      overflow: hidden;
      position: relative;
    }

    .hero-summary-card::after {
      content: "";
      position: absolute;
      right: -40px;
      bottom: -42px;
      width: 160px;
      height: 160px;
      border-radius: 44px;
      border: 18px solid rgba(255, 255, 255, .10);
      transform: rotate(18deg);
    }

    .hero-summary-card h2,
    .hero-summary-card h3,
    .hero-summary-card p {
      color: #FFFFFF;
      position: relative;
      z-index: 1;
    }

    .mini-metric {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
      margin-top: 20px;
    }

    .mini-metric div {
      padding: 14px;
      border-radius: 18px;
      background: rgba(255, 255, 255, .13);
      border: 1px solid rgba(255, 255, 255, .20);
    }

    .mini-metric strong {
      display: block;
      font-size: 1.35rem;
      line-height: 1.2;
    }

    .mini-metric span {
      font-size: .86rem;
      opacity: .86;
    }

    .notice-bar {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      padding: 16px 18px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(214, 154, 76, .28);
      background: var(--notice);
      color: #71522B;
      margin-top: 22px;
    }

    .notice-icon,
    .card-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 34px;
      height: 34px;
      flex: 0 0 34px;
      border-radius: 12px;
      background: rgba(214, 154, 76, .16);
      color: #9A6A2C;
      font-weight: 900;
    }

    .chip-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 22px;
    }

    .chip {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 8px 14px;
      border-radius: 999px;
      background: #FFFFFF;
      border: 1px solid var(--border-soft);
      color: var(--text-muted);
      font-size: .9rem;
      font-weight: 700;
      box-shadow: 0 8px 18px rgba(38, 76, 105, .04);
    }

    .chip:hover {
      color: var(--primary-dark);
      background: var(--primary-soft);
      border-color: rgba(47, 111, 159, .25);
      transform: translateY(-1px);
    }

    .chip.active {
      background: var(--primary);
      color: #FFFFFF;
      border-color: var(--primary);
      box-shadow: 0 12px 24px rgba(47, 111, 159, .18);
    }

    .content-shell {
      padding-top: 24px;
      padding-bottom: 24px;
    }

    .article-stack {
      display: grid;
      gap: 18px;
    }

    .article-card {
      display: grid;
      grid-template-columns: 210px 1fr;
      gap: 22px;
      padding: 20px;
      border-radius: var(--radius-lg);
      border: 1px solid rgba(221, 232, 239, .94);
      background: rgba(255, 255, 255, .92);
      box-shadow: 0 14px 36px rgba(38, 76, 105, .07);
      transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }

    .article-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(47, 111, 159, .28);
    }

    .thumb {
      min-height: 170px;
      border-radius: 20px;
      background:
        linear-gradient(135deg, rgba(47, 111, 159, .90), rgba(138, 175, 193, .82)),
        radial-gradient(circle at 25% 22%, rgba(255, 255, 255, .42), transparent 28%);
      position: relative;
      overflow: hidden;
    }

    .thumb::before {
      content: "";
      position: absolute;
      inset: 16px;
      border: 1px solid rgba(255, 255, 255, .45);
      border-radius: 16px;
    }

    .thumb::after {
      content: "";
      position: absolute;
      width: 90px;
      height: 90px;
      right: -18px;
      bottom: -18px;
      border-radius: 24px;
      background: rgba(255, 255, 255, .18);
      transform: rotate(16deg);
    }

    .thumb.accent {
      background:
        linear-gradient(135deg, rgba(214, 154, 76, .90), rgba(110, 147, 168, .82)),
        radial-gradient(circle at 22% 18%, rgba(255, 255, 255, .38), transparent 28%);
    }

    .thumb.soft {
      background:
        linear-gradient(135deg, rgba(110, 147, 168, .88), rgba(47, 111, 159, .78)),
        repeating-linear-gradient(90deg, rgba(255, 255, 255, .12) 0 6px, transparent 6px 14px);
    }

    .badge-line {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 10px;
    }

    .topic-badge {
      display: inline-flex;
      align-items: center;
      padding: 5px 10px;
      border-radius: 999px;
      background: var(--primary-soft);
      color: var(--primary-dark);
      font-size: .78rem;
      font-weight: 800;
    }

    .topic-badge.hot {
      background: var(--accent-soft);
      color: #946326;
    }

    .meta {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      color: var(--text-muted);
      font-size: .9rem;
      margin: 12px 0 16px;
    }

    .meta span {
      display: inline-flex;
      align-items: center;
      gap: 5px;
    }

    .meta span::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--secondary);
      opacity: .7;
    }

    .info-insert {
      padding: 24px;
      border-radius: var(--radius-lg);
      border: 1px solid rgba(214, 154, 76, .24);
      background:
        linear-gradient(135deg, rgba(255, 248, 232, .95), rgba(255, 255, 255, .95));
      box-shadow: 0 14px 32px rgba(143, 103, 43, .07);
      display: flex;
      gap: 16px;
      align-items: flex-start;
    }

    .sidebar {
      position: sticky;
      top: 132px;
      display: grid;
      gap: 18px;
    }

    .side-card,
    .guide-card,
    .faq-card,
    .cta-card {
      border-radius: var(--radius-lg);
      border: 1px solid rgba(221, 232, 239, .94);
      background: rgba(255, 255, 255, .92);
      box-shadow: 0 14px 36px rgba(38, 76, 105, .07);
      padding: 24px;
    }

    .side-card h2,
    .side-card h3,
    .guide-card h2,
    .guide-card h3,
    .faq-card h2,
    .cta-card h2 {
      margin-bottom: 12px;
    }

    .side-list {
      display: grid;
      gap: 12px;
      padding: 0;
      margin: 16px 0 0;
      list-style: none;
    }

    .side-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      color: var(--text-muted);
    }

    .side-list li::before {
      content: "✓";
      width: 22px;
      height: 22px;
      flex: 0 0 22px;
      border-radius: 999px;
      background: var(--primary-soft);
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: .76rem;
      font-weight: 900;
      margin-top: 3px;
    }

    .quick-links {
      display: grid;
      gap: 10px;
      margin-top: 14px;
    }

    .quick-links a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 14px;
      border-radius: 15px;
      border: 1px solid var(--border-soft);
      background: #FBFDFF;
      color: var(--text-main);
      font-weight: 700;
    }

    .quick-links a:hover {
      background: var(--primary-soft);
      border-color: rgba(47, 111, 159, .28);
      color: var(--primary-dark);
      transform: translateX(2px);
    }

    .quick-links a::after {
      content: "›";
      font-size: 1.2rem;
      color: var(--secondary);
    }

    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 9px;
      margin-top: 14px;
    }

    .tag-cloud span {
      display: inline-flex;
      padding: 7px 11px;
      border-radius: 999px;
      background: var(--surface-soft);
      color: var(--primary-dark);
      font-weight: 700;
      font-size: .84rem;
    }

    .guide-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
      margin-top: 26px;
    }

    .guide-item {
      padding: 24px;
      border-radius: var(--radius-lg);
      background: #FFFFFF;
      border: 1px solid var(--border-soft);
      box-shadow: 0 14px 34px rgba(38, 76, 105, .06);
      transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }

    .guide-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(47, 111, 159, .26);
    }

    .guide-number {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 42px;
      height: 42px;
      border-radius: 15px;
      background: var(--primary-soft);
      color: var(--primary);
      font-weight: 900;
      margin-bottom: 16px;
    }

    .accordion {
      display: grid;
      gap: 12px;
    }

    .accordion-item {
      border: 1px solid var(--border-soft) !important;
      border-radius: var(--radius-md) !important;
      overflow: hidden;
      background: #FFFFFF;
      box-shadow: 0 10px 28px rgba(38, 76, 105, .05);
    }

    .accordion-button {
      padding: 18px 20px;
      color: var(--text-main);
      font-weight: 800;
      background: #FFFFFF;
      box-shadow: none !important;
    }

    .accordion-button:not(.collapsed) {
      background: var(--primary-soft);
      color: var(--primary-dark);
      border-left: 4px solid var(--primary);
    }

    .accordion-button:focus {
      border-color: rgba(47, 111, 159, .26);
      box-shadow: 0 0 0 .25rem rgba(47, 111, 159, .14) !important;
    }

    .accordion-body {
      color: var(--text-muted);
      line-height: 1.85;
      padding: 18px 22px 22px;
      background: #FFFFFF;
    }

    .contact-panel {
      border-radius: 30px;
      padding: 36px;
      background:
        linear-gradient(135deg, rgba(47, 111, 159, .96), rgba(35, 86, 124, .95)),
        radial-gradient(circle at 82% 16%, rgba(214, 154, 76, .25), transparent 32%);
      color: #FFFFFF;
      box-shadow: 0 24px 56px rgba(47, 111, 159, .24);
      overflow: hidden;
      position: relative;
    }

    .contact-panel::after {
      content: "";
      position: absolute;
      right: -70px;
      bottom: -80px;
      width: 260px;
      height: 260px;
      border-radius: 68px;
      border: 24px solid rgba(255, 255, 255, .08);
      transform: rotate(18deg);
    }

    .contact-panel h2,
    .contact-panel p {
      color: #FFFFFF;
      position: relative;
      z-index: 1;
    }

    .contact-panel .btn {
      position: relative;
      z-index: 1;
    }

    .form-card {
      position: relative;
      z-index: 1;
      padding: 22px;
      border-radius: var(--radius-lg);
      background: rgba(255, 255, 255, .12);
      border: 1px solid rgba(255, 255, 255, .22);
    }

    .form-control,
    .form-select {
      border-radius: 14px;
      border: 1px solid rgba(221, 232, 239, .95);
      padding: 12px 14px;
      color: var(--text-main);
      background-color: #FFFFFF;
    }

    .form-control:focus,
    .form-select:focus {
      border-color: rgba(47, 111, 159, .72);
      box-shadow: 0 0 0 .25rem rgba(47, 111, 159, .14);
    }

    .form-label {
      color: rgba(255, 255, 255, .92);
      font-weight: 750;
      font-size: .92rem;
    }

    .site-footer {
      padding: 54px 0 28px;
      background:
        linear-gradient(180deg, #FFFFFF, #EEF5F9);
      border-top: 1px solid var(--border-soft);
      color: var(--text-muted);
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      color: var(--text-main);
      font-weight: 850;
      margin-bottom: 14px;
    }

    .site-footer .brand-mark {
      width: 38px;
      height: 38px;
      flex-basis: 38px;
      border-radius: 14px;
    }

    .site-footer h3 {
      color: var(--text-main);
      font-weight: 800;
      margin-bottom: 14px;
    }

    .footer-links {
      display: grid;
      gap: 8px;
    }

    .footer-links a {
      color: var(--text-muted);
      font-weight: 700;
    }

    .footer-links a:hover {
      color: var(--primary);
      transform: translateX(2px);
    }

    .copyright {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      flex-wrap: wrap;
      margin-top: 34px;
      padding-top: 22px;
      border-top: 1px solid var(--border-soft);
      font-size: .92rem;
      color: #78909C;
    }

    @media (max-width: 991.98px) {
      :root {
        --section-space: 64px;
      }

      .hero-panel {
        padding: 26px;
      }

      .hero-summary-card {
        margin-top: 22px;
      }

      .sidebar {
        position: static;
        margin-top: 22px;
      }

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

      .article-card {
        grid-template-columns: 180px 1fr;
      }
    }

    @media (max-width: 767.98px) {
      .nav-top {
        align-items: flex-start;
        flex-direction: column;
        gap: 14px;
      }

      .nav-top .btn {
        width: 100%;
      }

      .brand-title {
        white-space: normal;
      }

      .category-hero {
        padding: 44px 0 30px;
      }

      .hero-panel {
        padding: 22px;
        border-radius: 24px;
      }

      .chip-row {
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: 6px;
        scrollbar-width: none;
      }

      .chip-row::-webkit-scrollbar {
        display: none;
      }

      .chip {
        white-space: nowrap;
      }

      .article-card {
        grid-template-columns: 1fr;
      }

      .thumb {
        min-height: 150px;
      }

      .info-insert {
        flex-direction: column;
      }

      .contact-panel {
        padding: 26px;
        border-radius: 24px;
      }

      .copyright {
        flex-direction: column;
        align-items: flex-start;
      }
    }

    @media (max-width: 575.98px) {
      body {
        font-size: 15.5px;
      }

      .brand {
        gap: 10px;
      }

      .brand-mark {
        width: 40px;
        height: 40px;
        flex-basis: 40px;
      }

      .seg-nav {
        width: max-content;
      }

      .seg-nav a {
        padding: 8px 15px;
      }

      .mini-metric {
        grid-template-columns: 1fr;
      }

      .hero-panel,
      .side-card,
      .guide-card,
      .faq-card,
      .cta-card,
      .article-card {
        border-radius: 20px;
      }

      .btn {
        width: 100%;
      }

      .d-flex.btn-group-mobile {
        flex-direction: column;
        width: 100%;
      }
    }