/* roulang page: index */
:root{
      --ink:#0B1F1A;
      --ink-2:#10251F;
      --mint:#25D6B1;
      --mint-soft:#DDF8F1;
      --orange:#FF9F43;
      --orange-soft:#FFF0DD;
      --paper:#F6F3EC;
      --mist:#F5F7F4;
      --card:#FFFFFF;
      --card-green:#FBFCF8;
      --text:#1A211E;
      --muted:#65706B;
      --line:#DDE5DE;
      --warn:#E96B4C;
      --shadow:0 18px 45px rgba(16,37,31,.08);
      --shadow-strong:0 24px 70px rgba(16,37,31,.15);
      --radius-lg:28px;
      --radius:20px;
      --radius-sm:14px;
      --max:1180px;
      --fast:.22s ease;
      --section:92px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 8% 4%, rgba(37,214,177,.14), transparent 26%),
        linear-gradient(180deg,var(--paper),#fff 42%,var(--mist));
      line-height:1.75;
      font-size:16px;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none;transition:color var(--fast),background var(--fast),border-color var(--fast),transform var(--fast)}
    a:hover,a:focus{color:var(--ink)}
    img{max-width:100%;height:auto;display:block}
    button,input{font:inherit}
    button{cursor:pointer}
    :focus-visible{outline:3px solid rgba(37,214,177,.45);outline-offset:3px}
    .site-wrap{min-height:100vh}
    .grid-container{max-width:var(--max)}
    .section{padding:var(--section) 0}
    .section-tight{padding:66px 0}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 13px;
      border:1px solid rgba(37,214,177,.28);
      border-radius:999px;
      background:rgba(255,255,255,.72);
      color:var(--ink);
      font-size:13px;
      font-weight:700;
      letter-spacing:.02em;
    }
    .eyebrow::before{
      content:"";
      width:8px;height:8px;border-radius:999px;background:var(--mint);
      box-shadow:0 0 0 5px rgba(37,214,177,.13);
    }
    h1,h2,h3{margin:0;color:var(--ink);letter-spacing:-.035em;line-height:1.18}
    h1{font-size:clamp(34px,5vw,56px);font-weight:800}
    h2{font-size:clamp(26px,3.4vw,38px);font-weight:800}
    h3{font-size:21px;font-weight:780}
    p{margin:0;color:var(--muted)}
    .lead{font-size:17px;line-height:1.8;color:#4e5b55}
    .section-head{
      display:flex;
      justify-content:space-between;
      gap:28px;
      align-items:flex-end;
      margin-bottom:34px;
    }
    .section-head .copy{max-width:560px}
    .section-head p{margin-top:12px}
    .top-note{
      background:var(--ink);
      color:rgba(255,255,255,.76);
      font-size:13px;
      padding:8px 0;
    }
    .top-note strong{color:#fff}
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(246,243,236,.88);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(11,31,26,.08);
    }
    .nav-bar{
      display:grid;
      grid-template-columns:auto minmax(280px,1fr) auto;
      gap:20px;
      align-items:center;
      min-height:78px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:11px;
      min-width:max-content;
    }
    .brand-mark{
      width:42px;height:42px;border-radius:15px;
      background:linear-gradient(135deg,var(--ink),#173B31);
      position:relative;
      box-shadow:0 12px 28px rgba(11,31,26,.18);
    }
    .brand-mark::before,.brand-mark::after{
      content:"";
      position:absolute;
      border-radius:999px;
      background:var(--mint);
    }
    .brand-mark::before{width:16px;height:16px;left:8px;top:9px}
    .brand-mark::after{width:9px;height:22px;right:9px;bottom:8px;background:var(--orange)}
    .brand-text{display:flex;flex-direction:column;line-height:1.2}
    .brand-text strong{font-size:18px;color:var(--ink);letter-spacing:-.02em}
    .brand-text span{font-size:12px;color:var(--muted);margin-top:3px}
    .nav-search{
      position:relative;
      display:flex;
      align-items:center;
      background:#fff;
      border:1px solid var(--line);
      border-radius:999px;
      padding:7px 8px 7px 42px;
      box-shadow:0 12px 35px rgba(16,37,31,.06);
      transition:border-color var(--fast),box-shadow var(--fast);
    }
    .nav-search:focus-within{
      border-color:var(--mint);
      box-shadow:0 0 0 5px rgba(37,214,177,.12),0 16px 36px rgba(16,37,31,.08);
    }
    .search-icon{
      position:absolute;
      left:17px;
      width:16px;height:16px;
      border:2px solid var(--muted);
      border-radius:999px;
    }
    .search-icon::after{
      content:"";
      position:absolute;
      width:7px;height:2px;
      background:var(--muted);
      transform:rotate(45deg);
      right:-5px;bottom:-3px;
      border-radius:4px;
    }
    .nav-search input{
      width:100%;
      border:0;
      box-shadow:none;
      margin:0;
      height:42px;
      background:transparent;
      color:var(--text);
    }
    .nav-search input:focus{border:0;box-shadow:none;background:transparent}
    .nav-search .search-submit{
      border:0;
      background:var(--ink);
      color:#fff;
      border-radius:999px;
      min-width:78px;
      height:38px;
      font-weight:700;
      transition:background var(--fast),transform var(--fast);
    }
    .nav-search .search-submit:hover{background:#173B31;transform:translateY(-1px)}
    .nav-links{
      display:flex;
      align-items:center;
      gap:8px;
      justify-content:flex-end;
    }
    .nav-links a{
      min-height:42px;
      display:inline-flex;
      align-items:center;
      padding:0 15px;
      border-radius:999px;
      color:#43504A;
      font-weight:700;
      font-size:14px;
      white-space:nowrap;
    }
    .nav-links a:hover{background:rgba(37,214,177,.11);color:var(--ink)}
    .nav-links a.active{
      background:var(--mint-soft);
      color:var(--ink);
      border:1px solid rgba(37,214,177,.28);
    }
    .menu-toggle{
      display:none;
      border:1px solid var(--line);
      background:#fff;
      border-radius:14px;
      width:46px;height:46px;
      align-items:center;
      justify-content:center;
    }
    .menu-toggle span,.menu-toggle span::before,.menu-toggle span::after{
      width:20px;height:2px;background:var(--ink);display:block;border-radius:4px;position:relative;transition:var(--fast)
    }
    .menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0}
    .menu-toggle span::before{top:-7px}
    .menu-toggle span::after{top:7px}
    .hero{
      padding:58px 0 74px;
      position:relative;
    }
    .hero-panel{
      overflow:hidden;
      border-radius:36px;
      border:1px solid rgba(11,31,26,.08);
      background:
        linear-gradient(105deg,rgba(246,243,236,.96) 0%,rgba(246,243,236,.9) 52%,rgba(11,31,26,.86) 52%,rgba(11,31,26,.94) 100%),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      box-shadow:var(--shadow-strong);
      position:relative;
      padding:52px;
    }
    .hero-panel::before{
      content:"";
      position:absolute;
      inset:0;
      background-image:
        linear-gradient(rgba(37,214,177,.12) 1px,transparent 1px),
        linear-gradient(90deg,rgba(37,214,177,.12) 1px,transparent 1px);
      background-size:34px 34px;
      mask-image:linear-gradient(90deg,transparent,black 42%,black);
      opacity:.45;
      pointer-events:none;
    }
    .hero-content{position:relative;z-index:2}
    .hero h1{margin-top:20px;max-width:670px}
    .hero .lead{margin-top:18px;max-width:650px}
    .domain-pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      margin-top:18px;
      padding:9px 13px;
      border-radius:999px;
      background:#fff;
      border:1px solid var(--line);
      color:#43504A;
      font-size:13px;
      font-weight:700;
    }
    .hero-actions{
      display:flex;
      gap:14px;
      flex-wrap:wrap;
      margin-top:28px;
      align-items:center;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      min-height:48px;
      padding:0 22px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:800;
      transition:transform var(--fast),box-shadow var(--fast),background var(--fast),border-color var(--fast),color var(--fast);
    }
    .btn-primary{
      background:var(--orange);
      color:#1d160f;
      box-shadow:0 14px 30px rgba(255,159,67,.28);
    }
    .btn-primary:hover{color:#1d160f;transform:translateY(-2px);box-shadow:0 18px 38px rgba(255,159,67,.34)}
    .btn-secondary{
      background:#fff;
      color:var(--ink);
      border-color:var(--line);
    }
    .btn-secondary:hover{border-color:var(--mint);background:var(--mint-soft);transform:translateY(-2px)}
    .btn-dark{
      background:var(--ink);
      color:#fff;
    }
    .btn-dark:hover{background:#173B31;color:#fff;transform:translateY(-2px)}
    .trust-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:26px;
    }
    .trust-item{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 11px;
      border-radius:999px;
      background:rgba(255,255,255,.72);
      border:1px solid rgba(221,229,222,.82);
      color:#43504A;
      font-size:13px;
      font-weight:700;
    }
    .trust-item i{width:8px;height:8px;border-radius:999px;background:var(--mint);display:inline-block}
    .path-board{
      position:relative;
      z-index:2;
      background:rgba(251,252,248,.96);
      border:1px solid rgba(255,255,255,.38);
      border-radius:28px;
      padding:22px;
      box-shadow:0 22px 60px rgba(0,0,0,.16);
      margin-left:auto;
      max-width:410px;
    }
    .path-board h3{font-size:20px;margin-bottom:14px}
    .path-step{
      display:grid;
      grid-template-columns:38px 1fr;
      gap:12px;
      padding:14px 0;
      border-bottom:1px dashed rgba(101,112,107,.25);
    }
    .path-step:last-child{border-bottom:0}
    .path-num{
      width:38px;height:38px;border-radius:14px;
      display:flex;align-items:center;justify-content:center;
      background:var(--ink);
      color:var(--mint);
      font-weight:900;
    }
    .path-step strong{display:block;color:var(--ink);line-height:1.35}
    .path-step span{font-size:13px;color:var(--muted);line-height:1.55;display:block;margin-top:2px}
    .mini-meter{
      margin-top:16px;
      background:var(--ink);
      border-radius:20px;
      padding:16px;
      color:#fff;
      position:relative;
      overflow:hidden;
    }
    .mini-meter::after{
      content:"";
      position:absolute;
      width:120px;height:120px;border-radius:999px;
      right:-44px;top:-44px;background:rgba(37,214,177,.18);
    }
    .mini-meter span{font-size:13px;color:rgba(255,255,255,.68)}
    .mini-meter strong{display:block;font-size:30px;color:var(--mint);line-height:1.1;margin-top:4px}
    .problem-card,.solution-card,.content-card,.voice-card,.faq-shell,.topic-card{
      background:var(--card);
      border:1px solid rgba(221,229,222,.86);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
      transition:transform var(--fast),box-shadow var(--fast),border-color var(--fast);
    }
    .problem-card:hover,.solution-card:hover,.content-card:hover,.voice-card:hover,.topic-card:hover{
      transform:translateY(-4px);
      border-color:rgba(37,214,177,.46);
      box-shadow:0 24px 55px rgba(16,37,31,.12);
    }
    .problem-card{padding:24px;min-height:100%}
    .problem-card .index{
      width:42px;height:42px;border-radius:16px;
      display:flex;align-items:center;justify-content:center;
      background:var(--orange-soft);
      color:#9c5409;
      font-weight:900;
      margin-bottom:18px;
    }
    .problem-card p{margin-top:10px;font-size:15px}
    .solution-wrap{
      background:var(--card-green);
      border:1px solid var(--line);
      border-radius:32px;
      padding:34px;
      position:relative;
      overflow:hidden;
    }
    .solution-wrap::before{
      content:"";
      position:absolute;
      left:34px;right:34px;top:50%;
      height:1px;
      background:linear-gradient(90deg,transparent,var(--mint),transparent);
      opacity:.38;
    }
    .solution-card{
      padding:24px;
      position:relative;
      z-index:1;
      min-height:100%;
    }
    .solution-icon{
      width:46px;height:46px;border-radius:17px;
      background:var(--mint-soft);
      color:var(--ink);
      display:flex;align-items:center;justify-content:center;
      font-weight:900;
      margin-bottom:16px;
    }
    .solution-card p{font-size:15px;margin-top:10px}
    .dark-band{
      background:
        radial-gradient(circle at 78% 16%,rgba(37,214,177,.16),transparent 30%),
        linear-gradient(135deg,var(--ink),#102D25);
      color:#fff;
      border-radius:36px;
      padding:48px;
      overflow:hidden;
      position:relative;
    }
    .dark-band h2,.dark-band h3{color:#fff}
    .dark-band p{color:rgba(255,255,255,.72)}
    .metric-card{
      padding:24px;
      border-radius:24px;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.055);
      min-height:100%;
      transition:transform var(--fast),background var(--fast);
    }
    .metric-card:hover{transform:translateY(-4px);background:rgba(255,255,255,.085)}
    .metric-number{
      color:var(--mint);
      font-size:42px;
      font-weight:900;
      line-height:1;
      letter-spacing:-.04em;
      margin-bottom:12px;
    }
    .metric-card p{font-size:15px;margin-top:8px}
    .bento{
      display:grid;
      grid-template-columns:1.25fr .9fr .9fr;
      gap:24px;
    }
    .content-card{
      padding:24px;
      overflow:hidden;
      position:relative;
    }
    .content-card.feature{
      grid-row:span 2;
      min-height:520px;
      padding:0;
      display:flex;
      flex-direction:column;
    }
    .feature-img{
      height:250px;
      position:relative;
      overflow:hidden;
    }
    .feature-img img{width:100%;height:100%;object-fit:cover}
    .feature-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent,rgba(11,31,26,.45))}
    .feature-body{padding:28px;display:flex;flex-direction:column;gap:14px;flex:1}
    .tag{
      display:inline-flex;
      width:max-content;
      align-items:center;
      padding:6px 10px;
      border-radius:999px;
      background:var(--mint-soft);
      color:#12624F;
      font-size:12px;
      font-weight:800;
    }
    .tag.orange{background:var(--orange-soft);color:#8b4c0b}
    .content-card p{font-size:15px;margin-top:10px}
    .card-link{
      display:inline-flex;
      align-items:center;
      gap:7px;
      margin-top:auto;
      color:var(--ink);
      font-weight:900;
    }
    .card-link span{transition:transform var(--fast)}
    .content-card:hover .card-link span{transform:translateX(4px)}
    .voice-card{padding:26px;min-height:100%}
    .voice-card .quote{
      color:var(--text);
      font-size:17px;
      line-height:1.75;
      margin-bottom:18px;
    }
    .voice-meta{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding-top:16px;
      border-top:1px solid var(--line);
    }
    .voice-meta strong{color:var(--ink)}
    .voice-meta span{font-size:13px;color:var(--muted)}
    .note-box{
      background:var(--orange-soft);
      border:1px solid rgba(255,159,67,.28);
      border-radius:22px;
      padding:22px;
      color:#6e3d08;
      font-size:15px;
    }
    .faq-shell{padding:12px;background:#fff}
    .accordion{background:transparent;margin:0}
    .accordion-item{
      border-bottom:1px solid var(--line);
    }
    .accordion-item:last-child{border-bottom:0}
    .accordion-title{
      border:0!important;
      color:var(--ink)!important;
      font-weight:800;
      font-size:17px;
      padding:20px 52px 20px 18px;
      background:#fff!important;
      border-radius:16px;
    }
    .accordion-title:hover,.accordion-title:focus{background:var(--mint-soft)!important;color:var(--ink)!important}
    .accordion-title::before{color:var(--ink);font-size:22px;margin-top:-13px}
    .accordion-content{
      border:0!important;
      padding:0 18px 20px;
      color:var(--muted);
      line-height:1.75;
      background:#fff!important;
    }
    .cta{
      background:
        linear-gradient(135deg,rgba(11,31,26,.98),rgba(16,45,37,.96)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      border-radius:36px;
      padding:52px;
      color:#fff;
      position:relative;
      overflow:hidden;
    }
    .cta::before{
      content:"";
      position:absolute;
      inset:20px;
      border:1px solid rgba(255,255,255,.1);
      border-radius:28px;
      pointer-events:none;
    }
    .cta h2{color:#fff}
    .cta p{color:rgba(255,255,255,.72);margin-top:14px;max-width:660px}
    .cta-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px;position:relative;z-index:1}
    .site-footer{
      background:var(--ink);
      color:rgba(255,255,255,.72);
      padding:58px 0 24px;
      margin-top:92px;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      margin-bottom:16px;
    }
    .footer-brand .brand-mark{box-shadow:none;background:linear-gradient(135deg,#173B31,#071511)}
    .footer-brand strong{color:#fff;font-size:19px}
    .footer-title{
      color:#fff;
      font-size:15px;
      font-weight:900;
      margin-bottom:14px;
    }
    .footer-links{
      display:flex;
      flex-direction:column;
      gap:9px;
    }
    .footer-links a{color:rgba(255,255,255,.72);font-size:14px}
    .footer-links a:hover{color:var(--mint)}
    .keyword-row{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
    }
    .keyword-row span{
      border:1px solid rgba(255,255,255,.12);
      border-radius:999px;
      padding:6px 10px;
      font-size:13px;
      color:rgba(255,255,255,.76);
    }
    .copyright{
      margin-top:34px;
      padding-top:22px;
      border-top:1px solid rgba(255,255,255,.1);
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
      font-size:13px;
      color:rgba(255,255,255,.58);
    }
    @media (max-width:1023px){
      :root{--section:72px}
      .nav-bar{grid-template-columns:auto auto;gap:14px;padding:12px 0}
      .menu-toggle{display:flex;justify-self:end}
      .nav-search{grid-column:1/-1;order:3}
      .nav-links{
        grid-column:1/-1;
        order:4;
        display:none;
        justify-content:flex-start;
        overflow-x:auto;
        padding-bottom:6px;
      }
      .nav-links.is-open{display:flex}
      .hero-panel{
        background:
          linear-gradient(180deg,rgba(246,243,236,.96),rgba(246,243,236,.9) 58%,rgba(11,31,26,.9)),
          url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
        padding:36px;
      }
      .path-board{margin-top:34px;margin-left:0;max-width:none}
      .section-head{flex-direction:column;align-items:flex-start}
      .solution-wrap::before{display:none}
      .bento{grid-template-columns:1fr 1fr}
      .content-card.feature{grid-row:auto;grid-column:1/-1;min-height:auto}
      .dark-band,.cta{padding:38px}
    }
    @media (max-width:639px){
      :root{--section:56px}
      body{font-size:15px}
      .top-note{text-align:left;font-size:12px}
      .brand-text strong{font-size:16px}
      .brand-text span{display:none}
      .nav-search{padding-left:40px}
      .nav-search .search-submit{min-width:64px}
      .hero{padding:32px 0 50px}
      .hero-panel{border-radius:26px;padding:24px}
      .hero-actions,.cta-actions{flex-direction:column;align-items:stretch}
      .btn{width:100%}
      .trust-row{gap:8px}
      .trust-item{font-size:12px}
      .path-board{padding:18px;border-radius:22px}
      .section-head{margin-bottom:24px}
      .solution-wrap{padding:18px;border-radius:24px}
      .dark-band,.cta{border-radius:26px;padding:26px}
      .metric-number{font-size:34px}
      .bento{grid-template-columns:1fr}
      .feature-img{height:190px}
      .site-footer{margin-top:60px;padding-top:42px}
      .copyright{flex-direction:column}
    }

/* roulang page: category1 */
:root {
      --color-ink: #0B1F1A;
      --color-ink-2: #10251F;
      --color-cyan: #25D6B1;
      --color-cyan-soft: rgba(37, 214, 177, 0.14);
      --color-orange: #FF9F43;
      --color-orange-soft: rgba(255, 159, 67, 0.15);
      --color-bg: #F6F3EC;
      --color-bg-soft: #F5F7F4;
      --color-card: #FFFFFF;
      --color-card-tint: #FBFCF8;
      --color-text: #1A211E;
      --color-muted: #65706B;
      --color-border: #DDE5DE;
      --color-warn: #E96B4C;
      --radius-xl: 28px;
      --radius-lg: 20px;
      --radius-md: 14px;
      --radius-pill: 999px;
      --shadow-soft: 0 18px 45px rgba(16, 37, 31, 0.08);
      --shadow-hover: 0 24px 58px rgba(16, 37, 31, 0.14);
      --container: 1200px;
      --speed: 180ms ease;
      --section: 86px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      color: var(--color-text);
      background:
        radial-gradient(circle at 12% 4%, rgba(37, 214, 177, 0.10), transparent 28%),
        linear-gradient(180deg, #F8F6F0 0%, var(--color-bg) 46%, #F5F7F4 100%);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      font-size: 16px;
      line-height: 1.75;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--speed), background var(--speed), border-color var(--speed), transform var(--speed);
    }

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

    button,
    input {
      font: inherit;
    }

    button {
      cursor: pointer;
    }

    input,
    button,
    a {
      -webkit-tap-highlight-color: transparent;
    }

    :focus-visible {
      outline: 3px solid rgba(37, 214, 177, 0.42);
      outline-offset: 3px;
    }

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

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

    .section-tight {
      padding: 56px 0;
    }

    .section-title {
      max-width: 760px;
      margin-bottom: 28px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      margin-bottom: 14px;
      border: 1px solid rgba(37, 214, 177, 0.34);
      border-radius: var(--radius-pill);
      background: var(--color-cyan-soft);
      color: #0E6F5F;
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 0.02em;
    }

    .eyebrow::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--color-cyan);
      box-shadow: 0 0 0 5px rgba(37, 214, 177, 0.12);
    }

    h1,
    h2,
    h3,
    p {
      margin-top: 0;
    }

    h1 {
      font-size: clamp(32px, 5vw, 52px);
      line-height: 1.15;
      font-weight: 800;
      letter-spacing: -0.04em;
      margin-bottom: 18px;
      color: var(--color-ink);
    }

    h2 {
      font-size: clamp(25px, 3.4vw, 36px);
      line-height: 1.2;
      font-weight: 800;
      letter-spacing: -0.025em;
      color: var(--color-ink);
      margin-bottom: 12px;
    }

    h3 {
      font-size: 21px;
      line-height: 1.35;
      font-weight: 800;
      color: var(--color-ink);
      margin-bottom: 8px;
    }

    p {
      color: var(--color-muted);
      margin-bottom: 0;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      border-bottom: 1px solid rgba(221, 229, 222, 0.86);
      background: rgba(246, 243, 236, 0.92);
      backdrop-filter: blur(18px);
    }

    .nav-bar {
      min-height: 78px;
      display: flex;
      align-items: center;
      gap: 18px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      flex: 0 0 auto;
      color: var(--color-ink);
    }

    .brand:hover {
      color: #0E6F5F;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 15px;
      background:
        linear-gradient(135deg, var(--color-cyan) 0%, transparent 48%),
        linear-gradient(160deg, var(--color-ink) 20%, #18382F 100%);
      box-shadow: inset 0 0 0 1px rgba(255,255,255,0.18), 0 12px 28px rgba(11,31,26,0.18);
      position: relative;
      flex: 0 0 auto;
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      right: 9px;
      bottom: 9px;
      width: 12px;
      height: 12px;
      border: 2px solid var(--color-orange);
      border-radius: 50%;
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.18;
    }

    .brand-text strong {
      font-size: 18px;
      letter-spacing: -0.02em;
    }

    .brand-text span {
      font-size: 12px;
      color: var(--color-muted);
    }

    .nav-search {
      flex: 1 1 420px;
      min-width: 260px;
      height: 48px;
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 5px 6px 5px 16px;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-pill);
      background: rgba(255,255,255,0.82);
      box-shadow: 0 10px 28px rgba(16,37,31,0.05);
      transition: border-color var(--speed), box-shadow var(--speed), background var(--speed);
    }

    .nav-search:focus-within {
      border-color: var(--color-cyan);
      background: #fff;
      box-shadow: 0 0 0 5px rgba(37,214,177,0.12), 0 14px 34px rgba(16,37,31,0.08);
    }

    .search-icon {
      width: 17px;
      height: 17px;
      border: 2px solid #4B5A54;
      border-radius: 50%;
      position: relative;
      flex: 0 0 auto;
    }

    .search-icon::after {
      content: "";
      position: absolute;
      right: -6px;
      bottom: -5px;
      width: 8px;
      height: 2px;
      background: #4B5A54;
      border-radius: 2px;
      transform: rotate(45deg);
    }

    .nav-search input {
      min-width: 0;
      flex: 1;
      height: 36px;
      border: 0;
      background: transparent;
      box-shadow: none;
      margin: 0;
      color: var(--color-text);
      font-size: 14px;
    }

    .nav-search input:focus {
      border: 0;
      box-shadow: none;
      background: transparent;
    }

    .search-submit {
      height: 38px;
      padding: 0 18px;
      border: 0;
      border-radius: var(--radius-pill);
      background: var(--color-ink);
      color: #fff;
      font-weight: 700;
      font-size: 14px;
      transition: transform var(--speed), background var(--speed);
    }

    .search-submit:hover {
      background: #14382F;
      transform: translateY(-1px);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
      flex: 0 0 auto;
    }

    .nav-links a {
      min-height: 40px;
      display: inline-flex;
      align-items: center;
      padding: 9px 13px;
      border-radius: var(--radius-pill);
      color: #40504A;
      font-weight: 700;
      font-size: 14px;
      white-space: nowrap;
    }

    .nav-links a:hover,
    .nav-links a.active {
      background: var(--color-ink);
      color: #fff;
    }

    .menu-toggle {
      display: none;
      width: 46px;
      height: 46px;
      border: 1px solid var(--color-border);
      border-radius: 15px;
      background: #fff;
      position: relative;
    }

    .menu-toggle span,
    .menu-toggle span::before,
    .menu-toggle span::after {
      content: "";
      position: absolute;
      left: 13px;
      right: 13px;
      height: 2px;
      background: var(--color-ink);
      border-radius: 2px;
      transition: transform var(--speed), opacity var(--speed);
    }

    .menu-toggle span {
      top: 22px;
    }

    .menu-toggle span::before {
      left: 0;
      right: 0;
      top: -7px;
    }

    .menu-toggle span::after {
      left: 0;
      right: 0;
      top: 7px;
    }

    .menu-toggle.is-open span {
      transform: rotate(45deg);
    }

    .menu-toggle.is-open span::before {
      transform: translateY(7px) rotate(90deg);
    }

    .menu-toggle.is-open span::after {
      opacity: 0;
    }

    .hero {
      padding: 54px 0 42px;
    }

    .hero-shell {
      position: relative;
      overflow: hidden;
      border-radius: 34px;
      padding: 34px;
      background:
        linear-gradient(90deg, rgba(246,243,236,0.98) 0%, rgba(246,243,236,0.91) 45%, rgba(11,31,26,0.82) 100%),
        url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
      box-shadow: var(--shadow-soft);
      border: 1px solid rgba(221,229,222,0.9);
    }

    .hero-shell::before {
      content: "";
      position: absolute;
      inset: 20px;
      pointer-events: none;
      border-radius: 26px;
      border: 1px solid rgba(255,255,255,0.36);
    }

    .hero-copy {
      position: relative;
      max-width: 780px;
      z-index: 1;
    }

    .breadcrumb {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      align-items: center;
      margin: 0 0 18px;
      padding: 0;
      list-style: none;
      color: #5D6B66;
      font-size: 14px;
    }

    .breadcrumb a {
      color: #0E6F5F;
      font-weight: 700;
    }

    .breadcrumb li:not(:last-child)::after {
      content: "›";
      margin-left: 8px;
      color: #8B9691;
    }

    .hero-lead {
      max-width: 690px;
      font-size: 17px;
      color: #52615B;
      margin-bottom: 22px;
    }

    .hero-actions,
    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
    }

    .btn {
      min-height: 46px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 20px;
      border-radius: var(--radius-pill);
      border: 1px solid transparent;
      font-weight: 800;
      line-height: 1.1;
      transition: transform var(--speed), box-shadow var(--speed), background var(--speed), border-color var(--speed), color var(--speed);
    }

    .btn-primary {
      background: var(--color-cyan);
      color: #06251E;
      box-shadow: 0 14px 32px rgba(37,214,177,0.24);
    }

    .btn-primary:hover {
      color: #06251E;
      transform: translateY(-2px);
      box-shadow: 0 18px 38px rgba(37,214,177,0.32);
    }

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

    .btn-secondary:hover {
      border-color: rgba(37,214,177,0.7);
      color: #0E6F5F;
      transform: translateY(-2px);
    }

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

    .btn-dark:hover {
      background: #17382F;
      color: #fff;
      transform: translateY(-2px);
    }

    .hero-note {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-top: 18px;
      padding: 10px 14px;
      border-radius: var(--radius-pill);
      background: rgba(255,255,255,0.72);
      color: #52615B;
      font-size: 13px;
      border: 1px solid rgba(221,229,222,0.8);
    }

    .hero-note strong {
      color: var(--color-ink);
    }

    .filter-panel {
      margin-top: 24px;
      border-radius: var(--radius-xl);
      background: var(--color-card);
      border: 1px solid var(--color-border);
      box-shadow: var(--shadow-soft);
      padding: 22px;
    }

    .filter-search {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 9px 10px 9px 18px;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-pill);
      background: #fff;
      transition: box-shadow var(--speed), border-color var(--speed);
    }

    .filter-search:focus-within {
      border-color: var(--color-cyan);
      box-shadow: 0 0 0 5px rgba(37,214,177,0.12);
    }

    .filter-search input {
      flex: 1;
      min-width: 0;
      border: 0;
      box-shadow: none;
      margin: 0;
      height: 42px;
      background: transparent;
    }

    .filter-search input:focus {
      border: 0;
      box-shadow: none;
    }

    .chip-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 16px;
    }

    .chip {
      min-height: 38px;
      display: inline-flex;
      align-items: center;
      padding: 8px 14px;
      border-radius: var(--radius-pill);
      border: 1px solid var(--color-border);
      background: #fff;
      color: #40504A;
      font-weight: 700;
      font-size: 14px;
      transition: background var(--speed), border-color var(--speed), transform var(--speed), color var(--speed);
    }

    .chip:hover,
    .chip.active {
      border-color: var(--color-cyan);
      background: var(--color-cyan-soft);
      color: #0E6F5F;
      transform: translateY(-1px);
    }

    .content-layout {
      align-items: flex-start;
    }

    .side-index {
      position: sticky;
      top: 98px;
      padding: 18px;
      border-radius: var(--radius-lg);
      background: var(--color-ink);
      color: rgba(255,255,255,0.78);
      box-shadow: var(--shadow-soft);
      overflow: hidden;
    }

    .side-index::after {
      content: "";
      position: absolute;
      width: 160px;
      height: 160px;
      right: -70px;
      bottom: -70px;
      border-radius: 50%;
      background: rgba(37,214,177,0.18);
    }

    .side-title {
      color: #fff;
      font-weight: 800;
      margin-bottom: 12px;
      position: relative;
      z-index: 1;
    }

    .side-index a {
      position: relative;
      z-index: 1;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 10px;
      min-height: 44px;
      padding: 10px 12px;
      border-radius: 14px;
      color: rgba(255,255,255,0.76);
      font-weight: 700;
      border: 1px solid transparent;
    }

    .side-index a:hover,
    .side-index a.active {
      color: #fff;
      background: rgba(255,255,255,0.08);
      border-color: rgba(37,214,177,0.28);
    }

    .side-index span {
      color: var(--color-cyan);
      font-size: 13px;
    }

    .list-stack {
      display: grid;
      gap: 16px;
    }

    .article-row {
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 18px;
      align-items: center;
      padding: 20px;
      border-radius: var(--radius-lg);
      background: var(--color-card);
      border: 1px solid var(--color-border);
      box-shadow: 0 12px 32px rgba(16,37,31,0.05);
      transition: transform var(--speed), box-shadow var(--speed), border-color var(--speed);
    }

    .article-row:hover {
      transform: translateY(-3px);
      border-color: rgba(37,214,177,0.52);
      box-shadow: var(--shadow-hover);
    }

    .article-meta {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 9px;
      margin-bottom: 8px;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      min-height: 28px;
      padding: 5px 10px;
      border-radius: var(--radius-pill);
      background: var(--color-cyan-soft);
      color: #0E6F5F;
      font-size: 13px;
      font-weight: 800;
    }

    .tag.orange {
      background: var(--color-orange-soft);
      color: #9A560A;
    }

    .tag.dark {
      background: rgba(11,31,26,0.08);
      color: var(--color-ink);
    }

    .date {
      color: #7A8580;
      font-size: 13px;
      font-weight: 700;
    }

    .article-row h3 {
      margin-bottom: 7px;
      transition: color var(--speed);
    }

    .article-row:hover h3 {
      color: #0E6F5F;
    }

    .article-row p {
      max-width: 760px;
      font-size: 15px;
    }

    .read-btn {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      color: var(--color-ink);
      font-weight: 800;
      white-space: nowrap;
      padding: 10px 12px;
      border-radius: var(--radius-pill);
      border: 1px solid var(--color-border);
      background: #fff;
    }

    .read-btn:hover {
      color: #0E6F5F;
      border-color: var(--color-cyan);
      transform: translateX(2px);
    }

    .featured-card {
      overflow: hidden;
      border-radius: var(--radius-xl);
      background: var(--color-card);
      border: 1px solid var(--color-border);
      box-shadow: var(--shadow-soft);
    }

    .featured-media {
      min-height: 330px;
      height: 100%;
      position: relative;
      overflow: hidden;
      background: var(--color-ink);
    }

    .featured-media img {
      width: 100%;
      height: 100%;
      min-height: 330px;
      object-fit: cover;
      opacity: 0.86;
      transition: transform 360ms ease;
    }

    .featured-card:hover .featured-media img {
      transform: scale(1.04);
    }

    .media-label {
      position: absolute;
      left: 18px;
      bottom: 18px;
      max-width: calc(100% - 36px);
      padding: 10px 13px;
      border-radius: 16px;
      color: #fff;
      background: rgba(11,31,26,0.76);
      border: 1px solid rgba(255,255,255,0.16);
      backdrop-filter: blur(10px);
      font-size: 14px;
      font-weight: 800;
    }

    .featured-body {
      padding: 28px;
    }

    .step-list {
      display: grid;
      gap: 12px;
      margin: 20px 0 22px;
    }

    .step-item {
      display: grid;
      grid-template-columns: 34px minmax(0, 1fr);
      gap: 12px;
      align-items: start;
    }

    .step-num {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      border-radius: 12px;
      background: var(--color-ink);
      color: var(--color-cyan);
      font-weight: 900;
      font-size: 14px;
    }

    .step-item strong {
      display: block;
      color: var(--color-ink);
      margin-bottom: 2px;
    }

    .step-item span {
      color: var(--color-muted);
      font-size: 14px;
    }

    .topic-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr 1fr;
      gap: 18px;
    }

    .topic-card {
      min-height: 184px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      padding: 22px;
      border-radius: var(--radius-lg);
      background: var(--color-card-tint);
      border: 1px solid var(--color-border);
      box-shadow: 0 10px 28px rgba(16,37,31,0.045);
      transition: transform var(--speed), box-shadow var(--speed), border-color var(--speed);
    }

    .topic-card:hover {
      transform: translateY(-4px);
      border-color: rgba(37,214,177,0.55);
      box-shadow: var(--shadow-hover);
    }

    .topic-card.wide {
      grid-column: span 2;
      background:
        linear-gradient(135deg, rgba(37,214,177,0.14), rgba(255,255,255,0.92)),
        #fff;
    }

    .topic-card .icon {
      width: 44px;
      height: 44px;
      display: grid;
      place-items: center;
      margin-bottom: 14px;
      border-radius: 16px;
      background: var(--color-ink);
      color: var(--color-cyan);
      font-weight: 900;
    }

    .topic-card p {
      font-size: 15px;
    }

    .data-strip {
      margin-top: 24px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 14px;
    }

    .data-mini {
      padding: 18px;
      border-radius: 18px;
      background: var(--color-ink);
      border: 1px solid rgba(255,255,255,0.1);
      color: rgba(255,255,255,0.78);
    }

    .data-mini strong {
      display: block;
      margin-bottom: 5px;
      color: var(--color-cyan);
      font-size: 26px;
      line-height: 1;
    }

    .data-mini span {
      font-size: 13px;
    }

    .notice-box {
      padding: 22px;
      border-radius: var(--radius-lg);
      background: #fff;
      border: 1px solid var(--color-border);
      box-shadow: 0 10px 30px rgba(16,37,31,0.05);
    }

    .notice-box strong {
      display: block;
      color: var(--color-ink);
      margin-bottom: 8px;
      font-size: 18px;
    }

    .notice-box ul {
      margin: 14px 0 0;
      padding-left: 18px;
      color: var(--color-muted);
    }

    .notice-box li + li {
      margin-top: 8px;
    }

    .faq-wrap {
      border-radius: var(--radius-xl);
      background: rgba(255,255,255,0.62);
      border: 1px solid var(--color-border);
      padding: 22px;
      box-shadow: var(--shadow-soft);
    }

    .accordion {
      margin: 0;
      background: transparent;
    }

    .accordion-item {
      margin-bottom: 12px;
      border-radius: 18px;
      overflow: hidden;
      border: 1px solid var(--color-border);
      background: #fff;
    }

    .accordion-title {
      border: 0;
      padding: 18px 48px 18px 20px;
      color: var(--color-ink);
      font-weight: 800;
      font-size: 16px;
      line-height: 1.5;
      background: #fff;
    }

    .accordion-title:hover,
    .accordion-title:focus {
      background: var(--color-card-tint);
      color: #0E6F5F;
    }

    .accordion-title::before {
      right: 20px;
      color: #0E6F5F;
      font-size: 22px;
      margin-top: -14px;
    }

    .accordion-content {
      border: 0;
      padding: 0 20px 20px;
      color: var(--color-muted);
      background: #fff;
      font-size: 15px;
    }

    .cta-panel {
      position: relative;
      overflow: hidden;
      padding: 34px;
      border-radius: 32px;
      background:
        linear-gradient(135deg, rgba(37,214,177,0.16), transparent 42%),
        linear-gradient(135deg, var(--color-ink) 0%, #16392F 100%);
      color: #fff;
      box-shadow: var(--shadow-soft);
    }

    .cta-panel::after {
      content: "";
      position: absolute;
      top: -80px;
      right: -70px;
      width: 260px;
      height: 260px;
      border-radius: 50%;
      border: 1px solid rgba(255,255,255,0.14);
      background: rgba(255,159,67,0.12);
    }

    .cta-panel h2,
    .cta-panel p {
      position: relative;
      z-index: 1;
    }

    .cta-panel h2 {
      color: #fff;
      margin-bottom: 10px;
    }

    .cta-panel p {
      color: rgba(255,255,255,0.74);
      max-width: 660px;
      margin-bottom: 22px;
    }

    .cta-actions {
      position: relative;
      z-index: 1;
    }

    .cta-actions .btn-primary {
      background: var(--color-orange);
      color: #241407;
      box-shadow: 0 16px 32px rgba(255,159,67,0.24);
    }

    .cta-actions .btn-secondary {
      background: rgba(255,255,255,0.08);
      border-color: rgba(255,255,255,0.18);
      color: #fff;
    }

    .cta-actions .btn-secondary:hover {
      background: rgba(255,255,255,0.14);
      border-color: rgba(37,214,177,0.52);
      color: #fff;
    }

    .site-footer {
      padding: 58px 0 28px;
      background: var(--color-ink);
      color: rgba(255,255,255,0.72);
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
      color: #fff;
      font-size: 20px;
    }

    .site-footer p {
      max-width: 470px;
      color: rgba(255,255,255,0.72);
      font-size: 14px;
    }

    .footer-title {
      color: #fff;
      font-weight: 800;
      margin-bottom: 13px;
    }

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

    .footer-links a {
      color: rgba(255,255,255,0.72);
      font-size: 14px;
    }

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

    .keyword-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .keyword-row span {
      display: inline-flex;
      padding: 7px 10px;
      border-radius: var(--radius-pill);
      border: 1px solid rgba(255,255,255,0.14);
      color: rgba(255,255,255,0.78);
      font-size: 13px;
    }

    .copyright {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      flex-wrap: wrap;
      margin-top: 36px;
      padding-top: 22px;
      border-top: 1px solid rgba(255,255,255,0.12);
      color: rgba(255,255,255,0.56);
      font-size: 13px;
    }

    @media (max-width: 1023px) {
      :root {
        --section: 66px;
      }

      .nav-bar {
        flex-wrap: wrap;
        padding: 14px 0;
        gap: 12px;
      }

      .brand {
        flex: 1 1 auto;
      }

      .menu-toggle {
        display: inline-flex;
        flex: 0 0 auto;
      }

      .nav-search {
        order: 3;
        flex: 1 1 100%;
      }

      .nav-links {
        order: 4;
        width: 100%;
        display: none;
        padding: 8px;
        border-radius: 18px;
        background: #fff;
        border: 1px solid var(--color-border);
        box-shadow: var(--shadow-soft);
      }

      .nav-links.is-open {
        display: flex;
      }

      .nav-links a {
        flex: 1 1 auto;
        justify-content: center;
      }

      .hero-shell {
        padding: 26px;
      }

      .side-index {
        position: static;
        display: flex;
        gap: 8px;
        overflow-x: auto;
        padding: 12px;
        border-radius: 20px;
        scrollbar-width: none;
      }

      .side-index::-webkit-scrollbar {
        display: none;
      }

      .side-title {
        display: none;
      }

      .side-index a {
        flex: 0 0 auto;
        min-height: 40px;
        white-space: nowrap;
      }

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

      .topic-card.wide {
        grid-column: span 2;
      }

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

    @media (max-width: 639px) {
      body {
        font-size: 15px;
      }

      .section,
      .section-tight {
        padding: 48px 0;
      }

      .nav-bar {
        min-height: auto;
      }

      .brand-text strong {
        font-size: 16px;
      }

      .brand-mark {
        width: 38px;
        height: 38px;
        border-radius: 13px;
      }

      .nav-search {
        min-width: 0;
        height: auto;
        border-radius: 22px;
        padding: 8px;
        flex-wrap: wrap;
      }

      .nav-search .search-icon {
        margin-left: 8px;
      }

      .nav-search input {
        flex: 1 1 calc(100% - 42px);
      }

      .search-submit {
        width: 100%;
      }

      .nav-links {
        flex-direction: column;
        align-items: stretch;
      }

      .nav-links a {
        width: 100%;
      }

      .hero {
        padding-top: 26px;
      }

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

      .hero-note {
        align-items: flex-start;
        border-radius: 18px;
      }

      .filter-panel,
      .faq-wrap,
      .cta-panel {
        border-radius: 22px;
        padding: 18px;
      }

      .filter-search {
        border-radius: 20px;
        flex-wrap: wrap;
      }

      .filter-search input {
        flex: 1 1 calc(100% - 38px);
      }

      .filter-search .btn {
        width: 100%;
      }

      .chip-row {
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: 4px;
        scrollbar-width: none;
      }

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

      .chip {
        flex: 0 0 auto;
      }

      .article-row {
        grid-template-columns: 1fr;
        padding: 18px;
      }

      .read-btn {
        justify-content: center;
        width: 100%;
      }

      .featured-body {
        padding: 22px;
      }

      .featured-media,
      .featured-media img {
        min-height: 220px;
      }

      .topic-grid,
      .data-strip {
        grid-template-columns: 1fr;
      }

      .topic-card.wide {
        grid-column: auto;
      }

      .btn,
      .cta-actions .btn {
        width: 100%;
      }

      .copyright {
        display: grid;
      }
    }