/* roulang page: index */
:root{
      --c7-primary:#123C3A;
      --c7-primary-deep:#102C2A;
      --c7-primary-soft:#173F3B;
      --c7-secondary:#12BFA2;
      --c7-secondary-soft:rgba(18,191,162,.12);
      --c7-accent:#FF8A3D;
      --c7-accent-deep:#F47C36;
      --c7-bg:#F8F5EF;
      --c7-bg-soft:#FFFCF7;
      --c7-card:#FFFFFF;
      --c7-title:#142321;
      --c7-text:#40524E;
      --c7-muted:#73817D;
      --c7-border:rgba(18,60,58,.12);
      --c7-border-strong:rgba(18,60,58,.22);
      --c7-shadow:0 18px 45px rgba(16,44,42,.10);
      --c7-shadow-hover:0 24px 62px rgba(16,44,42,.16);
      --c7-radius-sm:12px;
      --c7-radius-md:22px;
      --c7-radius-lg:32px;
      --c7-max:1180px;
      --c7-font:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:var(--c7-font);
      color:var(--c7-text);
      background:
        radial-gradient(circle at 8% 6%, rgba(18,191,162,.12), transparent 32%),
        radial-gradient(circle at 92% 12%, rgba(255,138,61,.12), transparent 30%),
        linear-gradient(180deg,var(--c7-bg) 0%,#FBF7EF 48%,#F8F5EF 100%);
      line-height:1.78;
      font-size:16px;
      text-rendering:optimizeLegibility;
      overflow-x:hidden;
    }

    a{
      color:var(--c7-primary);
      text-decoration:none;
      transition:color .2s ease,background .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
    }
    a:hover{color:var(--c7-accent-deep)}
    a:focus-visible,
    button:focus-visible,
    .btn:focus-visible,
    .navbar-toggler:focus-visible{
      outline:3px solid rgba(255,138,61,.45);
      outline-offset:3px;
      box-shadow:none;
    }
    img{max-width:100%;display:block}
    p{margin:0 0 1rem}
    h1,h2,h3,h4,h5,h6{
      color:var(--c7-title);
      font-weight:800;
      letter-spacing:-.02em;
      margin:0;
    }
    .container{
      max-width:var(--c7-max);
    }
    .section{
      padding:92px 0;
      position:relative;
    }
    .section-tight{padding:70px 0}
    .section-title{
      font-size:clamp(2rem,4vw,2.55rem);
      line-height:1.22;
      margin-bottom:16px;
    }
    .section-lead{
      color:var(--c7-muted);
      font-size:17px;
      line-height:1.85;
      max-width:720px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 13px;
      border-radius:999px;
      background:var(--c7-secondary-soft);
      color:var(--c7-primary);
      font-size:13px;
      font-weight:800;
      letter-spacing:.02em;
      margin-bottom:18px;
      border:1px solid rgba(18,191,162,.22);
    }
    .eyebrow::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--c7-accent);
      box-shadow:0 0 0 5px rgba(255,138,61,.14);
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:1030;
      background:rgba(248,245,239,.86);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(18,60,58,.08);
      box-shadow:0 8px 28px rgba(16,44,42,.05);
    }
    .navbar{
      padding:14px 0;
    }
    .brand-logo{
      display:inline-flex;
      align-items:center;
      gap:11px;
      color:var(--c7-title);
      font-weight:900;
      letter-spacing:-.03em;
      white-space:nowrap;
    }
    .brand-mark{
      width:44px;
      height:44px;
      border-radius:15px;
      display:grid;
      place-items:center;
      color:#fff;
      font-weight:900;
      font-size:16px;
      background:
        radial-gradient(circle at 75% 25%, var(--c7-accent) 0 18%, transparent 19%),
        linear-gradient(135deg,var(--c7-primary) 0%,#0E5A50 62%,var(--c7-secondary) 100%);
      box-shadow:0 14px 30px rgba(18,60,58,.20);
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.1;
    }
    .brand-text strong{
      font-size:18px;
    }
    .brand-text span{
      color:var(--c7-muted);
      font-size:12px;
      font-weight:700;
      letter-spacing:.04em;
      margin-top:3px;
    }
    .navbar-toggler{
      border:1px solid var(--c7-border);
      border-radius:14px;
      padding:9px 11px;
      background:#fff;
    }
    .navbar-toggler:focus{box-shadow:none}
    .nav-menu{
      gap:8px;
      align-items:center;
    }
    .nav-link{
      color:var(--c7-text);
      font-size:15px;
      font-weight:750;
      padding:10px 15px!important;
      border-radius:999px;
      position:relative;
    }
    .nav-link:hover{
      color:var(--c7-primary);
      background:rgba(18,191,162,.10);
    }
    .nav-link.active{
      color:var(--c7-primary);
      background:#fff;
      box-shadow:inset 0 0 0 1px var(--c7-border);
    }
    .nav-cta{
      margin-left:12px;
    }

    .btn-c7{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      border:0;
      border-radius:999px;
      padding:13px 22px;
      font-weight:850;
      font-size:15px;
      line-height:1.1;
      transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
      text-decoration:none;
      white-space:nowrap;
    }
    .btn-c7-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--c7-accent) 0%,var(--c7-accent-deep) 100%);
      box-shadow:0 16px 34px rgba(244,124,54,.28);
    }
    .btn-c7-primary:hover{
      color:#fff;
      transform:translateY(-2px);
      box-shadow:0 22px 42px rgba(244,124,54,.34);
    }
    .btn-c7-secondary{
      color:var(--c7-primary);
      background:#fff;
      border:1px solid var(--c7-border);
      box-shadow:0 12px 28px rgba(16,44,42,.07);
    }
    .btn-c7-secondary:hover{
      color:var(--c7-primary);
      background:rgba(18,191,162,.11);
      transform:translateY(-2px);
      border-color:rgba(18,191,162,.36);
    }
    .btn-c7-dark{
      color:#fff;
      background:linear-gradient(135deg,#0E3B35 0%,#145A51 100%);
      box-shadow:0 18px 38px rgba(16,44,42,.22);
    }
    .btn-c7-dark:hover{
      color:#fff;
      transform:translateY(-2px);
      box-shadow:0 24px 48px rgba(16,44,42,.28);
    }

    .hero{
      padding:86px 0 58px;
      position:relative;
      overflow:hidden;
    }
    .hero::before{
      content:"C7";
      position:absolute;
      right:4%;
      top:18px;
      font-size:210px;
      line-height:1;
      font-weight:950;
      color:rgba(18,60,58,.045);
      pointer-events:none;
    }
    .hero-copy{
      position:relative;
      z-index:2;
      padding:28px 0;
    }
    .hero h1{
      font-size:clamp(2.25rem,5vw,3.65rem);
      line-height:1.16;
      margin-bottom:22px;
      max-width:680px;
    }
    .hero h1 .highlight{
      color:var(--c7-primary);
      background:linear-gradient(transparent 62%,rgba(18,191,162,.22) 0);
    }
    .hero-desc{
      max-width:660px;
      color:#4A5A56;
      font-size:18px;
      line-height:1.9;
      margin-bottom:28px;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:14px;
      margin-bottom:28px;
    }
    .trust-strip{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:20px;
    }
    .trust-item{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:9px 13px;
      border-radius:999px;
      background:rgba(255,255,255,.72);
      border:1px solid var(--c7-border);
      color:var(--c7-primary);
      font-size:13px;
      font-weight:750;
      box-shadow:0 10px 24px rgba(16,44,42,.05);
    }
    .trust-item i{
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--c7-secondary);
      display:inline-block;
    }
    .hero-visual{
      position:relative;
      min-height:520px;
      border-radius:var(--c7-radius-lg);
      overflow:hidden;
      box-shadow:var(--c7-shadow);
      background:var(--c7-primary);
      isolation:isolate;
    }
    .hero-visual img{
      width:100%;
      height:100%;
      min-height:520px;
      object-fit:cover;
      filter:saturate(1.05) contrast(1.02);
    }
    .hero-visual::after{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(135deg,rgba(16,44,42,.72),rgba(18,191,162,.16) 54%,rgba(255,138,61,.18)),
        radial-gradient(circle at 20% 20%,rgba(255,255,255,.18),transparent 28%);
      z-index:1;
    }
    .floating-panel{
      position:absolute;
      left:22px;
      right:22px;
      bottom:22px;
      z-index:2;
      border-radius:24px;
      padding:20px;
      background:rgba(255,252,247,.92);
      backdrop-filter:blur(14px);
      border:1px solid rgba(255,255,255,.72);
      box-shadow:0 18px 48px rgba(16,44,42,.20);
    }
    .floating-panel small{
      color:var(--c7-muted);
      font-weight:750;
    }
    .floating-panel strong{
      display:block;
      color:var(--c7-title);
      font-size:22px;
      margin:5px 0 10px;
    }
    .mini-metrics{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:10px;
    }
    .mini-metric{
      padding:12px 10px;
      border-radius:16px;
      background:rgba(18,191,162,.09);
      color:var(--c7-primary);
      text-align:center;
      font-weight:850;
      font-size:13px;
    }

    .metric-row{
      margin-top:34px;
    }
    .metric-card{
      height:100%;
      padding:22px;
      border-radius:24px;
      background:rgba(255,255,255,.72);
      border:1px solid var(--c7-border);
      box-shadow:0 16px 36px rgba(16,44,42,.07);
    }
    .metric-card b{
      display:block;
      color:var(--c7-primary);
      font-size:24px;
      margin-bottom:5px;
    }
    .metric-card span{
      color:var(--c7-muted);
      font-size:14px;
      font-weight:650;
    }

    .category-entry{
      margin-top:22px;
    }
    .entry-card{
      position:relative;
      overflow:hidden;
      min-height:260px;
      border-radius:30px;
      padding:34px;
      background:var(--c7-card);
      border:1px solid var(--c7-border);
      box-shadow:var(--c7-shadow);
      transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
    }
    .entry-card:hover{
      transform:translateY(-4px);
      box-shadow:var(--c7-shadow-hover);
      border-color:rgba(18,191,162,.38);
    }
    .entry-card::after{
      content:"";
      position:absolute;
      right:-80px;
      bottom:-100px;
      width:260px;
      height:260px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(255,138,61,.22),transparent 62%);
      pointer-events:none;
    }
    .entry-card h3{
      font-size:26px;
      margin-bottom:12px;
    }
    .entry-card p{
      color:var(--c7-muted);
      max-width:740px;
      margin-bottom:20px;
    }
    .tag-list{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-bottom:22px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      padding:7px 12px;
      border-radius:999px;
      color:var(--c7-primary);
      background:rgba(18,191,162,.10);
      border:1px solid rgba(18,191,162,.18);
      font-size:13px;
      font-weight:750;
    }

    .pain-layout{
      display:grid;
      grid-template-columns:.88fr 1.12fr;
      gap:54px;
      align-items:start;
    }
    .sticky-note{
      position:sticky;
      top:104px;
      padding:34px;
      border-radius:30px;
      background:var(--c7-primary);
      color:rgba(255,255,255,.82);
      box-shadow:var(--c7-shadow);
      overflow:hidden;
    }
    .sticky-note::after{
      content:"";
      position:absolute;
      right:-90px;
      top:-90px;
      width:220px;
      height:220px;
      border-radius:50%;
      background:rgba(18,191,162,.22);
    }
    .sticky-note h2{
      color:#fff;
      font-size:clamp(1.9rem,3vw,2.45rem);
      line-height:1.25;
      margin-bottom:16px;
    }
    .sticky-note p{
      color:rgba(255,255,255,.78);
      margin-bottom:0;
    }
    .pain-stack{
      display:grid;
      gap:16px;
    }
    .pain-card{
      display:grid;
      grid-template-columns:58px 1fr;
      gap:18px;
      padding:24px;
      background:var(--c7-card);
      border:1px solid var(--c7-border);
      border-radius:24px;
      box-shadow:0 14px 32px rgba(16,44,42,.06);
      transition:transform .22s ease,box-shadow .22s ease;
    }
    .pain-card:hover{
      transform:translateY(-3px);
      box-shadow:var(--c7-shadow);
    }
    .number-badge{
      width:58px;
      height:58px;
      border-radius:18px;
      display:grid;
      place-items:center;
      color:#fff;
      background:linear-gradient(135deg,var(--c7-primary),var(--c7-secondary));
      font-weight:900;
    }
    .pain-card h3{
      font-size:21px;
      margin-bottom:7px;
    }
    .pain-card p{
      color:var(--c7-muted);
      margin:0;
      line-height:1.75;
    }

    .solution-band{
      background:
        linear-gradient(180deg,rgba(255,255,255,.5),rgba(255,252,247,.95)),
        radial-gradient(circle at 8% 50%,rgba(255,138,61,.12),transparent 26%);
    }
    .steps{
      position:relative;
      margin-top:42px;
    }
    .steps::before{
      content:"";
      position:absolute;
      left:6%;
      right:6%;
      top:38px;
      height:2px;
      background:linear-gradient(90deg,rgba(18,191,162,.1),rgba(18,191,162,.48),rgba(255,138,61,.35));
    }
    .step-card{
      position:relative;
      z-index:2;
      height:100%;
      padding:26px 24px;
      border-radius:26px;
      background:var(--c7-card);
      border:1px solid var(--c7-border);
      box-shadow:0 15px 34px rgba(16,44,42,.07);
      transition:transform .2s ease,box-shadow .2s ease;
    }
    .step-card:hover{
      transform:translateY(-4px);
      box-shadow:var(--c7-shadow-hover);
    }
    .step-no{
      width:76px;
      height:76px;
      border-radius:50%;
      display:grid;
      place-items:center;
      margin-bottom:20px;
      color:var(--c7-primary);
      background:#F1FFFB;
      border:8px solid var(--c7-bg);
      font-size:18px;
      font-weight:950;
      box-shadow:0 10px 26px rgba(18,191,162,.14);
    }
    .step-card h3{
      font-size:21px;
      margin-bottom:10px;
    }
    .step-card p{
      color:var(--c7-muted);
      margin:0;
      line-height:1.75;
    }

    .value-dark{
      background:
        radial-gradient(circle at 10% 18%,rgba(18,191,162,.22),transparent 28%),
        radial-gradient(circle at 88% 22%,rgba(255,138,61,.18),transparent 26%),
        linear-gradient(135deg,var(--c7-primary-deep),var(--c7-primary-soft));
      color:rgba(255,255,255,.78);
      overflow:hidden;
    }
    .value-dark h2,
    .value-dark h3{color:#fff}
    .value-dark .section-lead{color:rgba(255,255,255,.72)}
    .value-grid{
      margin-top:38px;
    }
    .value-card{
      height:100%;
      padding:28px;
      border-radius:28px;
      background:rgba(255,252,247,.08);
      border:1px solid rgba(255,255,255,.12);
      box-shadow:0 20px 50px rgba(0,0,0,.12);
    }
    .value-card .big{
      display:block;
      color:var(--c7-accent);
      font-size:42px;
      line-height:1;
      font-weight:950;
      margin-bottom:13px;
    }
    .value-card p{
      color:rgba(255,255,255,.74);
      margin:0;
    }
    .comparison{
      margin-top:42px;
      padding:28px;
      border-radius:30px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.14);
    }
    .compare-line{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      padding:16px 0;
      border-bottom:1px solid rgba(255,255,255,.12);
    }
    .compare-line:last-child{border-bottom:0}
    .compare-line span:first-child{color:rgba(255,255,255,.66)}
    .compare-line span:last-child{
      color:#fff;
      font-weight:850;
      text-align:right;
    }

    .scenario-card{
      height:100%;
      border-radius:28px;
      background:var(--c7-card);
      border:1px solid var(--c7-border);
      box-shadow:var(--c7-shadow);
      overflow:hidden;
      transition:transform .22s ease,box-shadow .22s ease;
    }
    .scenario-card:hover{
      transform:translateY(-4px);
      box-shadow:var(--c7-shadow-hover);
    }
    .scenario-img{
      height:190px;
      position:relative;
      overflow:hidden;
    }
    .scenario-img img{
      width:100%;
      height:100%;
      object-fit:cover;
    }
    .scenario-img::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg,transparent 25%,rgba(16,44,42,.55));
    }
    .avatar-mark{
      position:absolute;
      left:20px;
      bottom:18px;
      z-index:2;
      width:48px;
      height:48px;
      border-radius:18px;
      display:grid;
      place-items:center;
      color:#fff;
      font-weight:900;
      background:linear-gradient(135deg,var(--c7-accent),var(--c7-secondary));
      box-shadow:0 12px 28px rgba(0,0,0,.18);
    }
    .scenario-body{
      padding:25px;
    }
    .scenario-body h3{
      font-size:21px;
      margin-bottom:10px;
    }
    .quote{
      color:var(--c7-muted);
      margin:0;
      line-height:1.82;
    }

    .faq-wrap{
      max-width:900px;
      margin:40px auto 0;
    }
    .accordion{
      display:grid;
      gap:14px;
    }
    .accordion-item{
      border:1px solid var(--c7-border);
      border-radius:22px!important;
      overflow:hidden;
      background:var(--c7-card);
      box-shadow:0 12px 30px rgba(16,44,42,.05);
    }
    .accordion-button{
      color:var(--c7-title);
      background:var(--c7-card);
      font-weight:850;
      font-size:17px;
      padding:21px 24px;
      border:0;
      box-shadow:none!important;
    }
    .accordion-button:not(.collapsed){
      color:var(--c7-primary);
      background:linear-gradient(90deg,rgba(18,191,162,.13),rgba(255,138,61,.08));
    }
    .accordion-button::after{
      width:16px;
      height:16px;
      background-size:16px;
      filter:saturate(.2);
    }
    .accordion-body{
      padding:0 24px 22px;
      color:var(--c7-muted);
      line-height:1.85;
      background:linear-gradient(180deg,rgba(18,191,162,.04),#fff);
    }

    .cta-block{
      position:relative;
      overflow:hidden;
      border-radius:36px;
      padding:46px;
      background:
        linear-gradient(135deg,rgba(16,44,42,.94),rgba(18,60,58,.91)),
        url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
      box-shadow:var(--c7-shadow-hover);
      color:rgba(255,255,255,.78);
    }
    .cta-block::after{
      content:"";
      position:absolute;
      right:-80px;
      top:-100px;
      width:300px;
      height:300px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(255,138,61,.30),transparent 60%);
    }
    .cta-block h2{
      color:#fff;
      font-size:clamp(1.9rem,4vw,2.7rem);
      line-height:1.2;
      margin-bottom:14px;
    }
    .cta-block p{
      max-width:680px;
      color:rgba(255,255,255,.76);
      margin-bottom:0;
    }
    .cta-actions{
      display:flex;
      gap:14px;
      justify-content:flex-end;
      flex-wrap:wrap;
      position:relative;
      z-index:2;
    }
    .cta-block .btn-c7-secondary{
      background:rgba(255,252,247,.96);
    }

    .footer{
      padding:70px 0 28px;
      background:var(--c7-primary-deep);
      color:rgba(255,255,255,.68);
    }
    .footer .brand-logo{color:#fff}
    .footer .brand-text span{color:rgba(255,255,255,.56)}
    .footer-desc{
      margin-top:18px;
      color:rgba(255,255,255,.62);
      max-width:360px;
    }
    .footer h3{
      color:#fff;
      font-size:16px;
      margin-bottom:18px;
    }
    .footer-links{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:rgba(255,255,255,.64);
      font-weight:650;
      font-size:14px;
    }
    .footer-links a:hover{color:var(--c7-accent)}
    .keyword-pills{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }
    .keyword-pills span{
      padding:7px 11px;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      color:rgba(255,255,255,.74);
      border:1px solid rgba(255,255,255,.10);
      font-size:13px;
      font-weight:750;
    }
    .footer-bottom{
      margin-top:46px;
      padding-top:22px;
      border-top:1px solid rgba(255,255,255,.10);
      display:flex;
      justify-content:space-between;
      gap:18px;
      flex-wrap:wrap;
      color:rgba(255,255,255,.48);
      font-size:13px;
    }

    @media (max-width: 991px){
      .navbar-collapse{
        margin-top:14px;
        padding:16px;
        border-radius:24px;
        background:#fff;
        border:1px solid var(--c7-border);
        box-shadow:var(--c7-shadow);
      }
      .nav-menu{align-items:stretch}
      .nav-link{
        padding:12px 14px!important;
      }
      .nav-cta{
        margin-left:0;
        margin-top:8px;
        width:100%;
      }
      .nav-cta .btn-c7{width:100%}
      .hero{
        padding:58px 0 44px;
      }
      .hero-visual,
      .hero-visual img{
        min-height:430px;
      }
      .pain-layout{
        grid-template-columns:1fr;
        gap:26px;
      }
      .sticky-note{
        position:relative;
        top:auto;
      }
      .steps::before{
        left:38px;
        right:auto;
        top:0;
        bottom:0;
        width:2px;
        height:auto;
      }
      .step-card{
        display:grid;
        grid-template-columns:86px 1fr;
        gap:18px;
        align-items:start;
      }
      .step-no{
        margin-bottom:0;
      }
      .cta-actions{
        justify-content:flex-start;
        margin-top:24px;
      }
    }

    @media (max-width: 767px){
      body{font-size:15px}
      .section{padding:64px 0}
      .section-tight{padding:54px 0}
      .brand-mark{
        width:40px;
        height:40px;
        border-radius:14px;
      }
      .brand-text strong{font-size:16px}
      .brand-text span{font-size:11px}
      .hero h1{
        font-size:clamp(2.05rem,9vw,2.55rem);
      }
      .hero-desc{
        font-size:16px;
      }
      .hero-actions .btn-c7{
        flex:1 1 100%;
      }
      .metric-card{
        padding:19px;
      }
      .hero-visual,
      .hero-visual img{
        min-height:380px;
      }
      .floating-panel{
        left:14px;
        right:14px;
        bottom:14px;
        padding:16px;
      }
      .mini-metrics{
        grid-template-columns:1fr;
      }
      .entry-card{
        padding:25px;
        border-radius:26px;
      }
      .pain-card{
        grid-template-columns:48px 1fr;
        padding:20px;
      }
      .number-badge{
        width:48px;
        height:48px;
        border-radius:15px;
      }
      .step-card{
        grid-template-columns:1fr;
      }
      .steps::before{display:none}
      .step-no{
        width:64px;
        height:64px;
        border-width:6px;
      }
      .compare-line{
        align-items:flex-start;
        flex-direction:column;
        gap:6px;
      }
      .compare-line span:last-child{text-align:left}
      .cta-block{
        padding:30px 24px;
        border-radius:28px;
      }
      .cta-actions .btn-c7{
        width:100%;
      }
      .footer{
        padding:56px 0 24px;
      }
    }

    @media (max-width: 520px){
      .trust-strip{
        display:grid;
        grid-template-columns:1fr 1fr;
      }
      .trust-item{
        justify-content:center;
        padding:9px 10px;
      }
      .section-title{
        font-size:1.86rem;
      }
      .scenario-img{
        height:160px;
      }
      .accordion-button{
        font-size:16px;
        padding:18px 20px;
      }
      .accordion-body{
        padding:0 20px 20px;
      }
    }

/* roulang page: category1 */
:root {
      --c7-primary: #123C3A;
      --c7-primary-deep: #102C2A;
      --c7-primary-soft: #173F3B;
      --c7-secondary: #12BFA2;
      --c7-secondary-soft: rgba(18, 191, 162, .12);
      --c7-accent: #FF8A3D;
      --c7-accent-deep: #F47C36;
      --c7-bg: #F8F5EF;
      --c7-bg-soft: #FFF9EF;
      --c7-card: #FFFCF7;
      --c7-white: #FFFFFF;
      --c7-title: #142321;
      --c7-text: #40524E;
      --c7-muted: #73817D;
      --c7-border: rgba(18, 60, 58, .12);
      --c7-border-strong: rgba(18, 60, 58, .2);
      --c7-shadow: 0 18px 45px rgba(16, 44, 42, .10);
      --c7-shadow-hover: 0 24px 60px rgba(16, 44, 42, .16);
      --c7-radius-sm: 12px;
      --c7-radius-md: 18px;
      --c7-radius-lg: 28px;
      --c7-radius-xl: 36px;
      --c7-container: 1200px;
      --c7-transition: all .25s ease;
    }

    *,
    *::before,
    *::after {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      color: var(--c7-text);
      background:
        radial-gradient(circle at 8% 5%, rgba(18, 191, 162, .10), transparent 28%),
        radial-gradient(circle at 88% 14%, rgba(255, 138, 61, .12), transparent 30%),
        var(--c7-bg);
      font-size: 16px;
      line-height: 1.78;
      overflow-x: hidden;
      text-rendering: optimizeLegibility;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--c7-transition);
    }

    a:hover {
      color: var(--c7-secondary);
    }

    a:focus-visible,
    button:focus-visible,
    .btn:focus-visible {
      outline: 3px solid rgba(255, 138, 61, .45);
      outline-offset: 3px;
      box-shadow: none;
    }

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

    .container {
      max-width: var(--c7-container);
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1030;
      background: rgba(248, 245, 239, .92);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--c7-border);
      box-shadow: 0 10px 30px rgba(16, 44, 42, .05);
    }

    .navbar {
      min-height: 78px;
      padding: 12px 0;
    }

    .brand-logo {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      color: var(--c7-primary);
      min-width: fit-content;
    }

    .brand-logo:hover {
      color: var(--c7-primary);
      transform: translateY(-1px);
    }

    .brand-mark {
      width: 46px;
      height: 46px;
      border-radius: 15px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background:
        linear-gradient(135deg, var(--c7-primary) 0%, #17635B 55%, var(--c7-secondary) 100%);
      color: #fff;
      font-weight: 900;
      letter-spacing: -.5px;
      box-shadow: 0 14px 32px rgba(18, 60, 58, .24);
      position: relative;
      overflow: hidden;
    }

    .brand-mark::after {
      content: "";
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--c7-accent);
      position: absolute;
      right: 7px;
      bottom: 7px;
      box-shadow: 0 0 0 4px rgba(255, 138, 61, .18);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.2;
    }

    .brand-text strong {
      font-size: 18px;
      letter-spacing: .2px;
      color: var(--c7-title);
    }

    .brand-text span {
      margin-top: 3px;
      font-size: 12px;
      color: var(--c7-muted);
    }

    .navbar-toggler {
      border: 1px solid var(--c7-border-strong);
      border-radius: 14px;
      padding: 9px 11px;
      background: var(--c7-card);
    }

    .navbar-toggler:focus {
      box-shadow: 0 0 0 3px rgba(18, 191, 162, .16);
    }

    .navbar-toggler-icon {
      width: 1.25em;
      height: 1.25em;
      background-image: none;
      position: relative;
    }

    .navbar-toggler-icon::before,
    .navbar-toggler-icon::after,
    .navbar-toggler-icon {
      border-top: 2px solid var(--c7-primary);
    }

    .navbar-toggler-icon::before,
    .navbar-toggler-icon::after {
      content: "";
      position: absolute;
      left: 0;
      width: 100%;
    }

    .navbar-toggler-icon::before {
      top: 5px;
    }

    .navbar-toggler-icon::after {
      top: 12px;
    }

    .nav-menu {
      align-items: center;
      gap: 10px;
    }

    .nav-link {
      color: var(--c7-title);
      font-weight: 700;
      font-size: 15px;
      padding: 10px 14px !important;
      border-radius: 999px;
      position: relative;
    }

    .nav-link:hover {
      color: var(--c7-primary);
      background: rgba(18, 191, 162, .10);
    }

    .nav-link.active {
      color: var(--c7-primary);
      background: rgba(18, 60, 58, .08);
    }

    .nav-link.active::after {
      content: "";
      position: absolute;
      left: 50%;
      bottom: 5px;
      width: 22px;
      height: 3px;
      border-radius: 99px;
      transform: translateX(-50%);
      background: var(--c7-accent);
    }

    .nav-cta {
      margin-left: 8px;
    }

    .btn-c7 {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border: 0;
      border-radius: 999px;
      padding: 13px 22px;
      font-weight: 800;
      font-size: 15px;
      line-height: 1.15;
      transition: var(--c7-transition);
      white-space: nowrap;
      cursor: pointer;
    }

    .btn-c7-primary {
      color: #fff;
      background: linear-gradient(135deg, var(--c7-accent) 0%, var(--c7-accent-deep) 100%);
      box-shadow: 0 14px 30px rgba(244, 124, 54, .28);
    }

    .btn-c7-primary:hover {
      color: #fff;
      transform: translateY(-3px);
      box-shadow: 0 18px 44px rgba(244, 124, 54, .34);
    }

    .btn-c7-secondary {
      color: var(--c7-primary);
      background: var(--c7-white);
      border: 1px solid rgba(18, 60, 58, .16);
      box-shadow: 0 10px 24px rgba(16, 44, 42, .07);
    }

    .btn-c7-secondary:hover {
      color: var(--c7-primary);
      background: rgba(18, 191, 162, .12);
      transform: translateY(-3px);
      box-shadow: var(--c7-shadow);
    }

    .btn-c7-dark {
      color: #fff;
      background: var(--c7-primary);
      box-shadow: 0 16px 36px rgba(16, 44, 42, .18);
    }

    .btn-c7-dark:hover {
      color: #fff;
      background: #0E302E;
      transform: translateY(-3px);
    }

    .section {
      padding: 88px 0;
      position: relative;
    }

    .section-tight {
      padding: 64px 0;
    }

    .section-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 16px;
      color: var(--c7-primary);
      background: rgba(18, 191, 162, .12);
      border: 1px solid rgba(18, 191, 162, .22);
      border-radius: 999px;
      padding: 7px 13px;
      font-size: 13px;
      font-weight: 800;
    }

    .section-eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 999px;
      background: var(--c7-accent);
    }

    .section-title {
      margin: 0;
      color: var(--c7-title);
      font-weight: 900;
      letter-spacing: -.8px;
      line-height: 1.24;
      font-size: clamp(30px, 4vw, 40px);
    }

    .section-lead {
      margin: 18px 0 0;
      color: var(--c7-text);
      font-size: 17px;
      line-height: 1.9;
    }

    .inner-hero {
      position: relative;
      isolation: isolate;
      overflow: hidden;
      background:
        linear-gradient(115deg, rgba(16, 44, 42, .94), rgba(18, 60, 58, .84)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      padding: 78px 0 64px;
      color: #fff;
    }

    .inner-hero::before {
      content: "C7";
      position: absolute;
      right: 6%;
      bottom: -42px;
      font-size: clamp(120px, 20vw, 250px);
      font-weight: 950;
      line-height: 1;
      color: rgba(255, 255, 255, .06);
      z-index: -1;
    }

    .inner-hero::after {
      content: "";
      position: absolute;
      inset: auto -8% -35% auto;
      width: 480px;
      height: 480px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(255, 138, 61, .26), transparent 66%);
      z-index: -1;
    }

    .breadcrumb-c7 {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 22px;
      color: rgba(255, 255, 255, .76);
      font-size: 14px;
      font-weight: 700;
    }

    .breadcrumb-c7 a {
      color: rgba(255, 255, 255, .88);
    }

    .breadcrumb-c7 a:hover {
      color: var(--c7-accent);
    }

    .breadcrumb-c7 span {
      color: rgba(255, 255, 255, .56);
    }

    .inner-hero h1 {
      max-width: 820px;
      margin: 0;
      color: #fff;
      font-size: clamp(34px, 5vw, 56px);
      font-weight: 950;
      letter-spacing: -1.2px;
      line-height: 1.16;
    }

    .inner-hero p {
      max-width: 760px;
      margin: 22px 0 0;
      color: rgba(255, 255, 255, .82);
      font-size: 18px;
      line-height: 1.9;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 30px;
    }

    .trust-strip {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 34px;
    }

    .trust-strip span {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border-radius: 999px;
      padding: 9px 14px;
      color: rgba(255, 255, 255, .88);
      background: rgba(255, 255, 255, .10);
      border: 1px solid rgba(255, 255, 255, .14);
      font-size: 13px;
      font-weight: 800;
    }

    .trust-strip span::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--c7-secondary);
    }

    .guide-panel {
      background: var(--c7-card);
      border: 1px solid var(--c7-border);
      border-radius: var(--c7-radius-xl);
      box-shadow: var(--c7-shadow);
      padding: 34px;
      position: relative;
      overflow: hidden;
    }

    .guide-panel::before {
      content: "";
      position: absolute;
      width: 190px;
      height: 190px;
      right: -80px;
      top: -80px;
      border-radius: 50%;
      background: rgba(18, 191, 162, .12);
    }

    .guide-list {
      display: grid;
      gap: 16px;
      margin-top: 26px;
    }

    .guide-item {
      display: grid;
      grid-template-columns: 48px 1fr;
      gap: 15px;
      align-items: start;
      padding: 18px;
      background: #fff;
      border: 1px solid var(--c7-border);
      border-radius: 22px;
      transition: var(--c7-transition);
    }

    .guide-item:hover {
      transform: translateY(-3px);
      box-shadow: 0 14px 32px rgba(16, 44, 42, .08);
    }

    .guide-num {
      width: 48px;
      height: 48px;
      border-radius: 16px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      background: var(--c7-primary);
      font-weight: 900;
    }

    .guide-item h3 {
      margin: 0 0 6px;
      color: var(--c7-title);
      font-size: 19px;
      font-weight: 900;
    }

    .guide-item p {
      margin: 0;
      color: var(--c7-muted);
      line-height: 1.75;
      font-size: 15px;
    }

    .topic-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 22px;
    }

    .topic-card {
      display: grid;
      grid-template-columns: 170px 1fr;
      min-height: 235px;
      background: var(--c7-card);
      border: 1px solid var(--c7-border);
      border-radius: var(--c7-radius-lg);
      overflow: hidden;
      box-shadow: 0 12px 32px rgba(16, 44, 42, .07);
      transition: var(--c7-transition);
    }

    .topic-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--c7-shadow-hover);
      border-color: rgba(18, 191, 162, .34);
    }

    .topic-image {
      position: relative;
      min-height: 100%;
      overflow: hidden;
      background: var(--c7-primary);
    }

    .topic-image img {
      width: 100%;
      height: 100%;
      min-height: 235px;
      object-fit: cover;
      transition: transform .45s ease;
    }

    .topic-card:hover .topic-image img {
      transform: scale(1.06);
    }

    .topic-image::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(18, 60, 58, .06), rgba(18, 60, 58, .42));
    }

    .topic-content {
      padding: 24px;
      display: flex;
      flex-direction: column;
      align-items: flex-start;
    }

    .tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 14px;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      border-radius: 999px;
      padding: 6px 10px;
      background: rgba(18, 191, 162, .12);
      color: var(--c7-primary);
      font-size: 12px;
      line-height: 1;
      font-weight: 900;
    }

    .tag-accent {
      background: rgba(255, 138, 61, .13);
      color: #A94A13;
    }

    .topic-content h3 {
      margin: 0 0 11px;
      color: var(--c7-title);
      font-size: 21px;
      font-weight: 950;
      line-height: 1.35;
    }

    .topic-content p {
      margin: 0;
      color: var(--c7-text);
      line-height: 1.82;
      font-size: 15px;
      flex: 1;
    }

    .link-more {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-top: 20px;
      color: var(--c7-primary);
      font-weight: 900;
      font-size: 14px;
    }

    .link-more::after {
      content: "→";
      color: var(--c7-accent);
      transition: var(--c7-transition);
    }

    .link-more:hover::after {
      transform: translateX(4px);
    }

    .sidebar-sticky {
      position: sticky;
      top: 104px;
      display: grid;
      gap: 18px;
    }

    .side-box {
      background: var(--c7-card);
      border: 1px solid var(--c7-border);
      border-radius: var(--c7-radius-lg);
      padding: 24px;
      box-shadow: 0 14px 34px rgba(16, 44, 42, .07);
    }

    .side-box.dark {
      background:
        radial-gradient(circle at 80% 10%, rgba(255, 138, 61, .2), transparent 34%),
        linear-gradient(135deg, var(--c7-primary-deep), var(--c7-primary-soft));
      color: #fff;
      border-color: rgba(255, 255, 255, .10);
    }

    .side-box h2,
    .side-box h3 {
      margin: 0 0 16px;
      color: var(--c7-title);
      font-size: 20px;
      font-weight: 950;
    }

    .side-box.dark h2,
    .side-box.dark h3 {
      color: #fff;
    }

    .side-box p {
      margin: 0 0 18px;
      color: var(--c7-muted);
      font-size: 15px;
      line-height: 1.8;
    }

    .side-box.dark p {
      color: rgba(255, 255, 255, .78);
    }

    .quick-links {
      display: grid;
      gap: 10px;
      padding: 0;
      margin: 0;
      list-style: none;
    }

    .quick-links a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 12px 13px;
      border-radius: 16px;
      background: rgba(18, 60, 58, .045);
      color: var(--c7-primary);
      font-weight: 800;
      font-size: 14px;
    }

    .quick-links a::after {
      content: "›";
      color: var(--c7-accent);
      font-size: 20px;
      line-height: 1;
    }

    .quick-links a:hover {
      background: rgba(18, 191, 162, .13);
      transform: translateX(3px);
    }

    .keyword-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .keyword-cloud span {
      display: inline-flex;
      padding: 8px 11px;
      border-radius: 999px;
      background: #fff;
      border: 1px solid var(--c7-border);
      color: var(--c7-primary);
      font-size: 13px;
      font-weight: 900;
    }

    .value-band {
      background:
        linear-gradient(135deg, rgba(16, 44, 42, .96), rgba(23, 63, 59, .96)),
        url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
      color: #fff;
      border-radius: var(--c7-radius-xl);
      overflow: hidden;
      padding: 44px;
      position: relative;
    }

    .value-band::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px),
        linear-gradient(180deg, rgba(255,255,255,.05) 1px, transparent 1px);
      background-size: 34px 34px;
      opacity: .35;
      pointer-events: none;
    }

    .value-band > * {
      position: relative;
      z-index: 1;
    }

    .value-band h2 {
      margin: 0;
      max-width: 760px;
      color: #fff;
      font-size: clamp(28px, 4vw, 40px);
      font-weight: 950;
      line-height: 1.25;
    }

    .value-band p {
      max-width: 780px;
      margin: 18px 0 0;
      color: rgba(255, 255, 255, .78);
      font-size: 17px;
      line-height: 1.85;
    }

    .value-metrics {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 14px;
      margin-top: 32px;
    }

    .metric {
      padding: 20px;
      border-radius: 22px;
      background: rgba(255, 255, 255, .09);
      border: 1px solid rgba(255, 255, 255, .13);
    }

    .metric strong {
      display: block;
      color: var(--c7-accent);
      font-size: 30px;
      font-weight: 950;
      line-height: 1.1;
      margin-bottom: 8px;
    }

    .metric span {
      color: rgba(255, 255, 255, .82);
      font-size: 14px;
      font-weight: 800;
    }

    .compare-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 22px;
      margin-top: 34px;
    }

    .compare-card {
      background: #fff;
      border: 1px solid var(--c7-border);
      border-radius: var(--c7-radius-lg);
      padding: 28px;
      box-shadow: 0 12px 32px rgba(16, 44, 42, .06);
    }

    .compare-card h3 {
      margin: 0 0 18px;
      color: var(--c7-title);
      font-size: 22px;
      font-weight: 950;
    }

    .check-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: grid;
      gap: 13px;
    }

    .check-list li {
      position: relative;
      padding-left: 30px;
      color: var(--c7-text);
      line-height: 1.75;
    }

    .check-list li::before {
      content: "";
      position: absolute;
      left: 0;
      top: .62em;
      width: 16px;
      height: 16px;
      border-radius: 50%;
      background: var(--c7-secondary);
      box-shadow: inset 0 0 0 5px rgba(255, 255, 255, .65);
    }

    .experience-strip {
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 28px;
      align-items: center;
      background: var(--c7-white);
      border: 1px solid var(--c7-border);
      border-radius: var(--c7-radius-xl);
      padding: 22px;
      box-shadow: var(--c7-shadow);
    }

    .experience-image {
      border-radius: 28px;
      overflow: hidden;
      min-height: 365px;
      position: relative;
    }

    .experience-image img {
      width: 100%;
      height: 100%;
      min-height: 365px;
      object-fit: cover;
    }

    .experience-image::after {
      content: "平台价值";
      position: absolute;
      left: 18px;
      bottom: 18px;
      border-radius: 999px;
      padding: 9px 14px;
      color: #fff;
      background: rgba(18, 60, 58, .72);
      backdrop-filter: blur(8px);
      font-weight: 900;
      font-size: 13px;
    }

    .experience-content {
      padding: 12px 18px 12px 6px;
    }

    .feature-stack {
      display: grid;
      gap: 14px;
      margin-top: 24px;
    }

    .feature-row {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      padding: 16px;
      border-radius: 20px;
      background: var(--c7-bg-soft);
      border: 1px solid rgba(18, 60, 58, .10);
    }

    .feature-dot {
      flex: 0 0 34px;
      width: 34px;
      height: 34px;
      border-radius: 12px;
      background: rgba(255, 138, 61, .16);
      position: relative;
    }

    .feature-dot::after {
      content: "";
      position: absolute;
      inset: 10px;
      border-radius: 50%;
      background: var(--c7-accent);
    }

    .feature-row h3 {
      margin: 0 0 5px;
      color: var(--c7-title);
      font-size: 18px;
      font-weight: 950;
    }

    .feature-row p {
      margin: 0;
      color: var(--c7-muted);
      font-size: 15px;
      line-height: 1.75;
    }

    .faq-section {
      background: linear-gradient(180deg, rgba(255, 252, 247, .72), rgba(248, 245, 239, .95));
    }

    .accordion {
      display: grid;
      gap: 14px;
    }

    .accordion-item {
      border: 1px solid var(--c7-border);
      background: var(--c7-card);
      border-radius: 22px !important;
      overflow: hidden;
      box-shadow: 0 10px 24px rgba(16, 44, 42, .05);
    }

    .accordion-button {
      padding: 20px 24px;
      background: var(--c7-card);
      color: var(--c7-title);
      font-weight: 950;
      font-size: 17px;
      line-height: 1.45;
      border: 0;
      box-shadow: none !important;
    }

    .accordion-button:not(.collapsed) {
      color: var(--c7-primary);
      background: rgba(18, 191, 162, .12);
    }

    .accordion-button::after {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background-color: rgba(18, 60, 58, .08);
      background-position: center;
      background-size: 14px;
      padding: 8px;
    }

    .accordion-body {
      padding: 0 24px 22px;
      color: var(--c7-text);
      line-height: 1.85;
    }

    .cta-card {
      border-radius: var(--c7-radius-xl);
      background:
        radial-gradient(circle at 8% 20%, rgba(18, 191, 162, .20), transparent 30%),
        radial-gradient(circle at 88% 28%, rgba(255, 138, 61, .22), transparent 34%),
        var(--c7-primary-deep);
      color: #fff;
      padding: 42px;
      overflow: hidden;
      position: relative;
    }

    .cta-card::after {
      content: "";
      position: absolute;
      right: -70px;
      bottom: -95px;
      width: 260px;
      height: 260px;
      border-radius: 50%;
      border: 42px solid rgba(255, 255, 255, .06);
    }

    .cta-card h2 {
      margin: 0;
      color: #fff;
      font-size: clamp(28px, 4vw, 40px);
      font-weight: 950;
      line-height: 1.25;
    }

    .cta-card p {
      margin: 16px 0 0;
      max-width: 720px;
      color: rgba(255, 255, 255, .78);
      font-size: 17px;
      line-height: 1.85;
    }

    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      justify-content: flex-end;
      gap: 14px;
      position: relative;
      z-index: 1;
    }

    .footer {
      padding: 70px 0 30px;
      background:
        radial-gradient(circle at 8% 10%, rgba(18, 191, 162, .16), transparent 28%),
        var(--c7-primary-deep);
      color: rgba(255, 255, 255, .72);
    }

    .footer .brand-text strong {
      color: #fff;
    }

    .footer .brand-text span {
      color: rgba(255, 255, 255, .58);
    }

    .footer-desc {
      margin: 22px 0 0;
      max-width: 470px;
      color: rgba(255, 255, 255, .68);
      line-height: 1.85;
    }

    .footer h3 {
      margin: 0 0 18px;
      color: #fff;
      font-size: 17px;
      font-weight: 950;
    }

    .footer-links {
      display: grid;
      gap: 11px;
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .footer-links a {
      color: rgba(255, 255, 255, .68);
      font-size: 14px;
    }

    .footer-links a:hover {
      color: var(--c7-secondary);
      padding-left: 3px;
    }

    .keyword-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 9px;
    }

    .keyword-pills span {
      border-radius: 999px;
      padding: 7px 10px;
      color: rgba(255, 255, 255, .78);
      background: rgba(255, 255, 255, .08);
      border: 1px solid rgba(255, 255, 255, .10);
      font-size: 13px;
      font-weight: 800;
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      margin-top: 50px;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, .10);
      color: rgba(255, 255, 255, .52);
      font-size: 13px;
    }

    @media (max-width: 1199px) {
      .topic-card {
        grid-template-columns: 145px 1fr;
      }

      .topic-content {
        padding: 20px;
      }

      .value-metrics {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
    }

    @media (max-width: 991px) {
      .navbar {
        min-height: 70px;
      }

      .navbar-collapse {
        margin-top: 14px;
        padding: 16px;
        background: var(--c7-card);
        border: 1px solid var(--c7-border);
        border-radius: 22px;
        box-shadow: var(--c7-shadow);
      }

      .nav-menu {
        align-items: stretch;
        gap: 6px;
      }

      .nav-link {
        padding: 12px 14px !important;
      }

      .nav-link.active::after {
        left: 14px;
        transform: none;
        bottom: 7px;
      }

      .nav-cta {
        margin-left: 0;
        margin-top: 8px;
      }

      .nav-cta .btn-c7 {
        width: 100%;
      }

      .section {
        padding: 66px 0;
      }

      .inner-hero {
        padding: 64px 0 56px;
      }

      .topic-grid,
      .compare-wrap,
      .experience-strip {
        grid-template-columns: 1fr;
      }

      .sidebar-sticky {
        position: static;
      }

      .experience-content {
        padding: 10px 2px;
      }

      .cta-actions {
        justify-content: flex-start;
        margin-top: 24px;
      }
    }

    @media (max-width: 767px) {
      body {
        font-size: 15px;
      }

      .brand-mark {
        width: 42px;
        height: 42px;
      }

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

      .brand-text span {
        font-size: 11px;
      }

      .inner-hero h1 {
        font-size: 34px;
      }

      .inner-hero p,
      .section-lead {
        font-size: 16px;
      }

      .hero-actions,
      .trust-strip {
        width: 100%;
      }

      .hero-actions .btn-c7 {
        width: 100%;
      }

      .guide-panel,
      .value-band,
      .cta-card {
        padding: 26px;
        border-radius: 28px;
      }

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

      .topic-image img {
        height: 220px;
        min-height: 220px;
      }

      .value-metrics {
        grid-template-columns: 1fr;
      }

      .experience-image,
      .experience-image img {
        min-height: 260px;
      }

      .footer {
        padding-top: 54px;
      }
    }

    @media (max-width: 575px) {
      .container {
        padding-left: 18px;
        padding-right: 18px;
      }

      .section {
        padding: 56px 0;
      }

      .section-title {
        font-size: 29px;
      }

      .inner-hero {
        padding: 54px 0 46px;
      }

      .inner-hero h1 {
        font-size: 31px;
      }

      .breadcrumb-c7 {
        font-size: 13px;
      }

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

      .guide-num {
        width: 42px;
        height: 42px;
      }

      .topic-content,
      .side-box,
      .compare-card {
        padding: 21px;
      }

      .accordion-button {
        padding: 18px 20px;
        font-size: 16px;
      }

      .accordion-body {
        padding: 0 20px 20px;
      }

      .footer-bottom {
        display: grid;
      }
    }