/* roulang page: index */
:root{
      --bg:#070A13;
      --bg-2:#0B1020;
      --panel:rgba(255,255,255,.065);
      --panel-strong:rgba(255,255,255,.105);
      --cyan:#35D6FF;
      --violet:#B05CFF;
      --pink:#D45CFF;
      --gold:#E7C77B;
      --text:#F3F6FF;
      --muted:#B9C0D4;
      --soft:#8790AA;
      --line:rgba(255,255,255,.13);
      --line-strong:rgba(53,214,255,.38);
      --shadow:0 24px 90px rgba(0,0,0,.42);
      --glow:0 0 42px rgba(53,214,255,.16),0 0 80px rgba(176,92,255,.10);
      --radius-xl:30px;
      --radius-lg:22px;
      --radius-md:16px;
      --nav-w:96px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      min-height:100vh;
      background:
        radial-gradient(circle at 18% 8%, rgba(53,214,255,.18), transparent 28%),
        radial-gradient(circle at 78% 18%, rgba(176,92,255,.20), transparent 30%),
        radial-gradient(circle at 58% 86%, rgba(212,92,255,.09), transparent 34%),
        linear-gradient(135deg,#070A13 0%,#0B1020 44%,#111425 100%);
      color:var(--text);
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      line-height:1.8;
      overflow-x:hidden;
    }
    body:before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background-image:
        linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
      background-size:42px 42px;
      mask-image:linear-gradient(to bottom,rgba(0,0,0,.7),transparent 78%);
      z-index:-2;
    }
    body:after{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background:radial-gradient(circle at center, transparent 0, rgba(0,0,0,.28) 72%);
      z-index:-1;
    }
    a{color:inherit;text-decoration:none}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    img,svg{max-width:100%;display:block}
    ::selection{background:rgba(53,214,255,.28);color:#fff}
    .site-shell{min-height:100vh}
    .side-nav{
      position:fixed;
      left:0;
      top:0;
      bottom:0;
      width:var(--nav-w);
      z-index:50;
      background:rgba(7,10,19,.82);
      border-right:1px solid rgba(53,214,255,.18);
      backdrop-filter:blur(22px);
      box-shadow:14px 0 50px rgba(0,0,0,.28);
      display:flex;
      flex-direction:column;
      align-items:center;
      padding:20px 12px;
    }
    .brand-mark{
      width:58px;
      height:58px;
      border-radius:22px;
      display:grid;
      place-items:center;
      background:
        linear-gradient(135deg,rgba(53,214,255,.22),rgba(176,92,255,.18)),
        rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.16);
      box-shadow:0 0 30px rgba(53,214,255,.18);
      position:relative;
      overflow:hidden;
    }
    .brand-mark:before{
      content:"";
      position:absolute;
      width:26px;
      height:26px;
      clip-path:polygon(24% 10%,24% 90%,86% 50%);
      background:linear-gradient(135deg,var(--cyan),var(--violet));
      filter:drop-shadow(0 0 12px rgba(53,214,255,.65));
    }
    .brand-small{
      writing-mode:vertical-rl;
      text-orientation:mixed;
      letter-spacing:.08em;
      color:#DDE6FF;
      font-size:11px;
      line-height:1.15;
      margin-top:12px;
      max-height:180px;
      opacity:.88;
    }
    .side-menu{
      display:flex;
      flex-direction:column;
      gap:12px;
      margin-top:42px;
      width:100%;
      align-items:center;
    }
    .nav-link{
      width:70px;
      min-height:66px;
      border-radius:22px;
      color:var(--soft);
      display:flex;
      flex-direction:column;
      align-items:center;
      justify-content:center;
      gap:4px;
      font-size:12px;
      border:1px solid transparent;
      transition:transform .24s ease,border-color .24s ease,background .24s ease,color .24s ease,box-shadow .24s ease;
      position:relative;
    }
    .nav-link .nav-ico{font-size:18px;line-height:1}
    .nav-link:hover{
      color:#fff;
      transform:translateY(-2px);
      border-color:rgba(53,214,255,.22);
      background:rgba(255,255,255,.06);
    }
    .nav-link.active{
      color:#fff;
      background:linear-gradient(135deg,rgba(53,214,255,.18),rgba(176,92,255,.16));
      border-color:rgba(53,214,255,.36);
      box-shadow:0 0 26px rgba(53,214,255,.13);
    }
    .nav-link.active:before{
      content:"";
      position:absolute;
      left:-13px;
      width:4px;
      height:34px;
      border-radius:999px;
      background:linear-gradient(to bottom,var(--cyan),var(--violet));
      box-shadow:0 0 18px rgba(53,214,255,.7);
    }
    .age-chip{
      margin-top:auto;
      width:64px;
      border-radius:999px;
      text-align:center;
      padding:8px 6px;
      color:#14120b;
      background:linear-gradient(135deg,var(--gold),#fff0bd);
      font-weight:900;
      font-size:13px;
      box-shadow:0 0 26px rgba(231,199,123,.18);
    }
    .top-nav{
      display:none;
      position:sticky;
      top:0;
      z-index:60;
      background:rgba(7,10,19,.82);
      backdrop-filter:blur(22px);
      border-bottom:1px solid rgba(255,255,255,.12);
    }
    .top-inner{
      height:68px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      padding:0 18px;
    }
    .top-brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
      font-weight:900;
      letter-spacing:-.02em;
    }
    .top-brand .brand-mark{width:42px;height:42px;border-radius:16px;flex:0 0 auto}
    .top-brand span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:68vw}
    .menu-toggle{
      width:42px;
      height:42px;
      border-radius:14px;
      border:1px solid rgba(255,255,255,.14);
      background:rgba(255,255,255,.06);
      color:#fff;
      display:grid;
      place-items:center;
      transition:.22s ease;
    }
    .menu-toggle:hover,.menu-toggle:focus-visible{border-color:var(--cyan);box-shadow:0 0 22px rgba(53,214,255,.18)}
    .mobile-panel{
      display:none;
      padding:0 18px 18px;
      gap:10px;
      flex-direction:column;
    }
    .mobile-panel.open{display:flex}
    .mobile-panel a{
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.055);
      padding:13px 14px;
      border-radius:16px;
      color:var(--muted);
    }
    .mobile-panel a.active{color:#fff;border-color:rgba(53,214,255,.35);background:rgba(53,214,255,.10)}
    .main-content{
      margin-left:var(--nav-w);
      min-height:100vh;
    }
    .container{
      width:min(1240px, calc(100% - 48px));
      margin:0 auto;
    }
    .section{padding:96px 0}
    .section.tight{padding:64px 0}
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      border:1px solid rgba(53,214,255,.25);
      background:rgba(53,214,255,.08);
      color:#C7F5FF;
      border-radius:999px;
      padding:7px 12px;
      font-size:13px;
      font-weight:700;
      letter-spacing:.02em;
    }
    .section-kicker:before{
      content:"";
      width:7px;
      height:7px;
      border-radius:999px;
      background:var(--cyan);
      box-shadow:0 0 14px var(--cyan);
    }
    .gradient-title{
      background:linear-gradient(135deg,#fff 10%,#D9F7FF 42%,#D8BCFF 72%,#FFE8A3 100%);
      -webkit-background-clip:text;
      background-clip:text;
      color:transparent;
    }
    .hero{
      position:relative;
      padding:86px 0 64px;
      overflow:hidden;
    }
    .hero-orb{
      position:absolute;
      border-radius:999px;
      filter:blur(18px);
      opacity:.55;
      animation:floatGlow 9s ease-in-out infinite alternate;
      pointer-events:none;
    }
    .hero-orb.one{width:290px;height:290px;background:rgba(53,214,255,.14);left:9%;top:12%}
    .hero-orb.two{width:340px;height:340px;background:rgba(176,92,255,.14);right:7%;bottom:8%;animation-delay:1.4s}
    @keyframes floatGlow{from{transform:translate3d(0,0,0) scale(1)}to{transform:translate3d(22px,-18px,0) scale(1.08)}}
    .hero-grid{
      position:relative;
      display:grid;
      grid-template-columns:1.02fr .98fr;
      gap:54px;
      align-items:center;
    }
    .hero h1{
      font-size:clamp(42px,5.2vw,68px);
      line-height:1.08;
      letter-spacing:-.055em;
      font-weight:900;
      margin:20px 0 22px;
    }
    .lead{
      color:#D6DAEA;
      font-size:17px;
      line-height:1.9;
      max-width:680px;
    }
    .hero-actions{
      display:flex;
      gap:14px;
      flex-wrap:wrap;
      margin-top:34px;
    }
    .glow-button,.ghost-button{
      min-height:52px;
      padding:13px 22px;
      border-radius:999px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      font-weight:800;
      transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease,background .22s ease;
      outline:none;
    }
    .glow-button{
      color:#031018;
      background:linear-gradient(135deg,var(--cyan),#A8ECFF 48%,var(--violet));
      box-shadow:0 0 26px rgba(53,214,255,.28),0 16px 52px rgba(176,92,255,.16);
      border:1px solid rgba(255,255,255,.24);
      animation:pulseBtn 2.6s ease-in-out infinite;
    }
    @keyframes pulseBtn{0%,100%{box-shadow:0 0 22px rgba(53,214,255,.25),0 16px 52px rgba(176,92,255,.14)}50%{box-shadow:0 0 34px rgba(53,214,255,.42),0 18px 62px rgba(176,92,255,.20)}}
    .ghost-button{
      color:#F6FAFF;
      background:rgba(255,255,255,.055);
      border:1px solid rgba(255,255,255,.16);
    }
    .glow-button:hover,.ghost-button:hover{transform:translateY(-2px) scale(1.015)}
    .ghost-button:hover{border-color:rgba(53,214,255,.42);background:rgba(53,214,255,.09);box-shadow:0 0 24px rgba(53,214,255,.12)}
    .glow-button:active,.ghost-button:active{transform:scale(.98)}
    .glow-button:focus-visible,.ghost-button:focus-visible,.nav-link:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,button:focus-visible{
      outline:2px solid var(--cyan);
      outline-offset:3px;
    }
    .hero-mini{
      margin-top:30px;
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      color:var(--muted);
      font-size:13px;
    }
    .tag-pill,.badge{
      display:inline-flex;
      align-items:center;
      gap:6px;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.13);
      background:rgba(255,255,255,.06);
      color:#DDE6FF;
      padding:7px 11px;
      font-size:13px;
      line-height:1;
      white-space:nowrap;
    }
    .badge.gold{
      color:#FFE9A8;
      border-color:rgba(231,199,123,.34);
      background:rgba(231,199,123,.10);
    }
    .badge.cyan{
      color:#C7F5FF;
      border-color:rgba(53,214,255,.34);
      background:rgba(53,214,255,.09);
    }
    .badge.violet{
      color:#E7D4FF;
      border-color:rgba(176,92,255,.35);
      background:rgba(176,92,255,.10);
    }
    .glass-card{
      background:var(--panel);
      border:1px solid var(--line);
      border-radius:var(--radius-xl);
      backdrop-filter:blur(18px);
      box-shadow:var(--shadow);
      transition:transform .26s ease,border-color .26s ease,background .26s ease,box-shadow .26s ease;
      position:relative;
      overflow:hidden;
    }
    .glass-card:hover{
      transform:translateY(-6px);
      border-color:rgba(53,214,255,.32);
      background:rgba(255,255,255,.085);
      box-shadow:var(--shadow),var(--glow);
    }
    .visual-stage{
      min-height:560px;
      display:grid;
      place-items:center;
      perspective:1100px;
    }
    .player-card{
      width:min(100%,520px);
      padding:18px;
      transform:rotateY(-8deg) rotateX(4deg);
      border-radius:34px;
      background:linear-gradient(160deg,rgba(255,255,255,.11),rgba(255,255,255,.045));
      border:1px solid rgba(255,255,255,.16);
      box-shadow:0 40px 120px rgba(0,0,0,.48),0 0 58px rgba(53,214,255,.15);
      position:relative;
    }
    .player-cover{
      height:292px;
      border-radius:26px;
      position:relative;
      overflow:hidden;
      background:
        radial-gradient(circle at 28% 32%,rgba(53,214,255,.42),transparent 24%),
        radial-gradient(circle at 72% 38%,rgba(212,92,255,.38),transparent 25%),
        linear-gradient(135deg,#111A36,#0B1020 55%,#26144C);
    }
    .player-cover:before{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(110deg,transparent 0 42%,rgba(255,255,255,.12) 49%,transparent 58%);
      transform:translateX(-70%);
      animation:shine 5s ease-in-out infinite;
    }
    @keyframes shine{0%,55%{transform:translateX(-75%)}100%{transform:translateX(78%)}}
    .play-core{
      position:absolute;
      left:50%;
      top:50%;
      transform:translate(-50%,-50%);
      width:82px;
      height:82px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:rgba(7,10,19,.56);
      border:1px solid rgba(255,255,255,.22);
      box-shadow:0 0 34px rgba(53,214,255,.4);
    }
    .play-core:before{
      content:"";
      width:28px;
      height:28px;
      margin-left:5px;
      clip-path:polygon(20% 8%,20% 92%,90% 50%);
      background:linear-gradient(135deg,var(--cyan),#fff);
    }
    .cover-tags{
      position:absolute;
      left:16px;
      top:16px;
      right:16px;
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:8px;
    }
    .player-meta{
      padding:18px 4px 4px;
      display:grid;
      gap:14px;
    }
    .meta-line{
      height:10px;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      overflow:hidden;
    }
    .meta-line span{
      display:block;
      height:100%;
      border-radius:999px;
      background:linear-gradient(90deg,var(--cyan),var(--violet));
    }
    .float-card{
      position:absolute;
      border-radius:22px;
      background:rgba(10,16,32,.72);
      border:1px solid rgba(255,255,255,.14);
      backdrop-filter:blur(18px);
      box-shadow:0 20px 60px rgba(0,0,0,.32);
      padding:16px;
    }
    .float-card.one{left:-34px;bottom:92px;width:178px}
    .float-card.two{right:-26px;top:70px;width:190px}
    .float-card h4{font-weight:900;margin:0 0 6px;font-size:15px}
    .float-card p{margin:0;color:var(--muted);font-size:12px;line-height:1.55}
    .privacy-strip{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:14px;
      margin-top:18px;
    }
    .privacy-note{
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.055);
      border-radius:22px;
      padding:18px;
      display:flex;
      gap:12px;
      align-items:flex-start;
    }
    .privacy-note strong{display:block;color:#fff;font-size:15px;margin-bottom:2px}
    .privacy-note span{color:var(--muted);font-size:13px;line-height:1.55}
    .note-icon{
      width:36px;height:36px;flex:0 0 auto;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg,rgba(53,214,255,.16),rgba(176,92,255,.14));
      border:1px solid rgba(255,255,255,.12);
    }
    .section-head{
      display:flex;
      justify-content:space-between;
      gap:24px;
      align-items:end;
      margin-bottom:34px;
    }
    .section-head h2{
      font-size:clamp(28px,3.2vw,44px);
      line-height:1.16;
      letter-spacing:-.035em;
      font-weight:900;
      margin:12px 0 0;
    }
    .section-head p{color:var(--muted);max-width:560px;margin:0}
    .bento-grid{
      display:grid;
      grid-template-columns:repeat(12,1fr);
      gap:18px;
    }
    .bento-card{
      padding:28px;
      min-height:230px;
    }
    .bento-card.large{grid-column:span 6;min-height:330px}
    .bento-card.mid{grid-column:span 3}
    .bento-card.wide{grid-column:span 4}
    .icon-box{
      width:48px;height:48px;border-radius:18px;display:grid;place-items:center;
      background:linear-gradient(135deg,rgba(53,214,255,.18),rgba(176,92,255,.14));
      border:1px solid rgba(255,255,255,.14);
      font-size:22px;
      margin-bottom:20px;
    }
    .bento-card h3,.scenario-card h3,.plan-card h3{font-size:22px;line-height:1.25;font-weight:900;margin:0 0 10px}
    .bento-card p,.scenario-card p,.plan-card p{color:var(--muted);margin:0}
    .status-row{display:flex;gap:9px;flex-wrap:wrap;margin-top:22px}
    .dashboard{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:20px;
      align-items:stretch;
    }
    .stats-grid{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:16px;
    }
    .stat-card{
      padding:24px;
      border-radius:24px;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.055);
    }
    .stat-number{
      font-size:38px;
      line-height:1;
      font-weight:950;
      letter-spacing:-.04em;
      color:#DDF8FF;
      text-shadow:0 0 22px rgba(53,214,255,.28);
      margin-bottom:10px;
    }
    .stat-card p{color:var(--muted);margin:0;font-size:14px}
    .progress-panel{padding:28px}
    .progress-item{margin:18px 0}
    .progress-label{display:flex;justify-content:space-between;color:#DDE6FF;font-weight:700;font-size:14px;margin-bottom:8px}
    .bar{height:9px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden}
    .bar span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--cyan),var(--violet))}
    .scenario-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:18px;
    }
    .scenario-card{
      min-height:330px;
      padding:18px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .abstract-cover{
      height:154px;
      border-radius:22px;
      position:relative;
      overflow:hidden;
      margin-bottom:18px;
      background:
        radial-gradient(circle at 25% 25%,rgba(53,214,255,.38),transparent 28%),
        radial-gradient(circle at 78% 32%,rgba(176,92,255,.34),transparent 26%),
        linear-gradient(135deg,#141B37,#0B1020);
    }
    .abstract-cover.alt{background:radial-gradient(circle at 72% 22%,rgba(231,199,123,.24),transparent 26%),radial-gradient(circle at 32% 64%,rgba(212,92,255,.34),transparent 30%),linear-gradient(135deg,#15172A,#091425)}
    .abstract-cover:after{
      content:"";
      position:absolute;
      inset:auto 16px 16px 16px;
      height:40px;
      border-radius:14px;
      background:rgba(7,10,19,.45);
      border:1px solid rgba(255,255,255,.12);
      backdrop-filter:blur(12px);
    }
    .mini-play{
      position:absolute;
      right:24px;
      top:22px;
      width:42px;
      height:42px;
      border-radius:50%;
      background:rgba(7,10,19,.55);
      border:1px solid rgba(255,255,255,.18);
      box-shadow:0 0 22px rgba(53,214,255,.22);
    }
    .mini-play:before{
      content:"";
      position:absolute;
      left:17px;top:12px;
      width:15px;height:18px;
      clip-path:polygon(0 0,0 100%,100% 50%);
      background:#fff;
    }
    .plan-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .plan-card{
      padding:30px;
      min-height:420px;
      display:flex;
      flex-direction:column;
    }
    .plan-card.featured{
      border-color:rgba(231,199,123,.42);
      background:linear-gradient(180deg,rgba(231,199,123,.12),rgba(255,255,255,.06));
    }
    .plan-list{
      display:grid;
      gap:12px;
      margin:24px 0;
      color:#D6DAEA;
      padding:0;
      list-style:none;
    }
    .plan-list li{display:flex;gap:10px;align-items:flex-start}
    .plan-list li:before{content:"✓";color:var(--cyan);font-weight:900}
    .plan-card .spacer{flex:1}
    .faq-wrap{
      display:grid;
      grid-template-columns:.82fr 1.18fr;
      gap:24px;
      align-items:start;
    }
    .faq-list{display:grid;gap:12px}
    .faq-item{
      border-radius:22px;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.055);
      overflow:hidden;
      transition:.22s ease;
    }
    .faq-item:hover{border-color:rgba(53,214,255,.34)}
    .faq-question{
      width:100%;
      padding:20px 22px;
      background:transparent;
      border:0;
      color:#fff;
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:18px;
      text-align:left;
      font-weight:850;
    }
    .faq-question span:last-child{
      width:28px;height:28px;border-radius:50%;
      display:grid;place-items:center;
      background:rgba(255,255,255,.07);
      color:var(--cyan);
      transition:transform .22s ease;
      flex:0 0 auto;
    }
    .faq-answer{
      max-height:0;
      overflow:hidden;
      transition:max-height .28s ease;
    }
    .faq-answer p{
      margin:0;
      padding:0 22px 20px;
      color:var(--muted);
      font-size:15px;
    }
    .faq-item.open{
      background:rgba(255,255,255,.085);
      border-color:rgba(53,214,255,.35);
    }
    .faq-item.open .faq-answer{max-height:220px}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .cta-panel{
      padding:38px;
      border-radius:34px;
      background:
        linear-gradient(135deg,rgba(53,214,255,.13),rgba(176,92,255,.12)),
        rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.14);
      box-shadow:0 30px 100px rgba(0,0,0,.38),0 0 60px rgba(53,214,255,.12);
      display:grid;
      grid-template-columns:.92fr 1.08fr;
      gap:34px;
      align-items:start;
    }
    .cta-panel h2{
      font-size:clamp(28px,3vw,42px);
      line-height:1.16;
      font-weight:950;
      letter-spacing:-.035em;
      margin:14px 0 14px;
    }
    .cta-panel p{color:var(--muted);margin:0 0 24px}
    .contact-form{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:14px;
    }
    .field{display:grid;gap:7px}
    .field.full{grid-column:1/-1}
    label{color:#EAF2FF;font-weight:750;font-size:14px}
    input,select,textarea{
      width:100%;
      border-radius:16px;
      border:1px solid rgba(255,255,255,.14);
      background:rgba(7,10,19,.42);
      color:#fff;
      padding:13px 14px;
      outline:none;
      transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
    }
    textarea{min-height:118px;resize:vertical}
    input::placeholder,textarea::placeholder{color:#737D99}
    input:focus,select:focus,textarea:focus{
      border-color:rgba(53,214,255,.55);
      box-shadow:0 0 0 4px rgba(53,214,255,.10);
      background:rgba(7,10,19,.62);
    }
    .submit-row{grid-column:1/-1;display:flex;gap:12px;align-items:center;flex-wrap:wrap}
    .hint{color:var(--soft);font-size:13px}
    .site-footer{
      border-top:1px solid rgba(255,255,255,.10);
      background:rgba(4,7,14,.45);
      padding:44px 0 28px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.1fr .7fr .9fr;
      gap:30px;
      align-items:start;
    }
    .footer-brand{
      display:flex;
      gap:14px;
      align-items:center;
      margin-bottom:14px;
      font-weight:950;
      font-size:18px;
    }
    .footer-desc,.footer-note,.copyright{color:var(--muted);font-size:14px;margin:0}
    .footer-links{display:grid;gap:9px}
    .footer-links a{color:var(--muted);transition:.2s ease}
    .footer-links a:hover{color:var(--cyan);transform:translateX(3px)}
    .footer-title{color:#fff;font-weight:900;margin-bottom:12px}
    .copyright{
      border-top:1px solid rgba(255,255,255,.08);
      margin-top:28px;
      padding-top:20px;
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
    }
    @media (prefers-reduced-motion:reduce){
      *,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
    }
    @media (max-width:1180px){
      .hero-grid,.dashboard,.faq-wrap,.cta-panel{grid-template-columns:1fr}
      .visual-stage{min-height:500px}
      .privacy-strip{grid-template-columns:repeat(2,1fr)}
      .bento-card.large{grid-column:span 12}
      .bento-card.mid,.bento-card.wide{grid-column:span 6}
      .scenario-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width:900px){
      :root{--nav-w:0px}
      .side-nav{display:none}
      .top-nav{display:block}
      .main-content{margin-left:0}
      .hero{padding:54px 0 44px}
      .section{padding:72px 0}
      .container{width:min(100% - 32px,1240px)}
      .section-head{display:block}
      .section-head p{margin-top:12px}
      .plan-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
    }
    @media (max-width:640px){
      .hero h1{font-size:38px}
      .lead{font-size:15.5px}
      .hero-actions{display:grid;grid-template-columns:1fr}
      .glow-button,.ghost-button{width:100%}
      .privacy-strip,.stats-grid,.scenario-grid,.contact-form{grid-template-columns:1fr}
      .bento-grid{grid-template-columns:1fr}
      .bento-card.large,.bento-card.mid,.bento-card.wide{grid-column:auto}
      .bento-card,.plan-card,.cta-panel{padding:22px}
      .player-card{transform:none}
      .player-cover{height:230px}
      .float-card{position:relative;left:auto!important;right:auto!important;top:auto!important;bottom:auto!important;width:100%!important;margin-top:12px}
      .visual-stage{min-height:auto;display:block}
      .cta-panel{border-radius:26px}
      .copyright{display:block}
    }
    @media (max-width:420px){
      .hero h1{font-size:34px;letter-spacing:-.04em}
      .section{padding:58px 0}
      .top-brand span{max-width:58vw}
      .stat-number{font-size:32px}
      .abstract-cover{height:132px}
    }

/* roulang page: category1 */
:root{
      --bg:#070A13;
      --bg-2:#0B1020;
      --panel:rgba(255,255,255,.06);
      --panel-strong:rgba(255,255,255,.1);
      --cyan:#35D6FF;
      --violet:#B05CFF;
      --pink:#D45CFF;
      --gold:#E7C77B;
      --text:#F4F7FF;
      --muted:#B9C0D4;
      --soft:#8790AA;
      --line:rgba(255,255,255,.13);
      --radius:28px;
      --shadow:0 24px 90px rgba(0,0,0,.42);
      --glow:0 0 42px rgba(53,214,255,.16),0 0 80px rgba(176,92,255,.12);
      --nav-w:96px;
      --ease:cubic-bezier(.2,.8,.2,1);
    }

    *{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);
      line-height:1.75;
      background:
        radial-gradient(circle at 16% 12%,rgba(53,214,255,.16),transparent 34%),
        radial-gradient(circle at 82% 18%,rgba(176,92,255,.16),transparent 30%),
        radial-gradient(circle at 52% 86%,rgba(212,92,255,.1),transparent 34%),
        linear-gradient(135deg,var(--bg),#0d1020 48%,#070812);
      min-height:100vh;
      overflow-x:hidden;
    }

    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      opacity:.38;
      z-index:-2;
      background-image:
        linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
        linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
      background-size:58px 58px;
      mask-image:radial-gradient(circle at center,black,transparent 78%);
    }

    body::after{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      z-index:-1;
      background:
        linear-gradient(115deg,transparent 0 40%,rgba(53,214,255,.035) 42%,transparent 48%),
        radial-gradient(circle at 30% 20%,rgba(255,255,255,.06),transparent 1px);
      background-size:auto,4px 4px;
      opacity:.45;
    }

    a{color:inherit;text-decoration:none;transition:color .22s var(--ease),opacity .22s var(--ease),transform .22s var(--ease)}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    img{max-width:100%;display:block}
    ::selection{background:rgba(53,214,255,.28);color:#fff}

    .container{
      width:min(1180px,calc(100% - 48px));
      margin-inline:auto;
    }

    .site-shell{
      margin-left:var(--nav-w);
      min-height:100vh;
    }

    .top-nav{position:relative;z-index:50}
    .top-inner{display:none}

    .side-nav{
      position:fixed;
      inset:0 auto 0 0;
      width:var(--nav-w);
      height:100vh;
      padding:18px 12px;
      display:flex;
      flex-direction:column;
      align-items:center;
      gap:22px;
      background:rgba(7,10,19,.82);
      backdrop-filter:blur(22px);
      border-right:1px solid rgba(53,214,255,.18);
      box-shadow:14px 0 52px rgba(0,0,0,.34);
      z-index:60;
    }

    .side-nav-logo{
      width:72px;
      min-height:128px;
      border:1px solid var(--line);
      border-radius:24px;
      background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.035));
      display:flex;
      flex-direction:column;
      align-items:center;
      justify-content:center;
      gap:8px;
      padding:12px 8px;
      text-align:center;
      box-shadow:var(--glow);
    }

    .logo-main{
      writing-mode:vertical-rl;
      font-size:13px;
      font-weight:900;
      letter-spacing:.08em;
      line-height:1.1;
      color:#fff;
    }

    .logo-sub{
      font-size:10px;
      color:var(--gold);
      letter-spacing:.02em;
      transform:scale(.92);
      white-space:nowrap;
    }

    .brand-mark{
      width:34px;
      height:34px;
      flex:0 0 34px;
      display:inline-flex;
      border-radius:14px;
      position:relative;
      background:
        radial-gradient(circle at 30% 28%,#fff,transparent 12%),
        linear-gradient(135deg,var(--cyan),var(--violet));
      box-shadow:0 0 34px rgba(53,214,255,.32);
    }

    .brand-mark::before{
      content:"";
      position:absolute;
      left:13px;
      top:9px;
      border-left:11px solid rgba(7,10,19,.88);
      border-top:7px solid transparent;
      border-bottom:7px solid transparent;
      filter:drop-shadow(0 0 8px rgba(255,255,255,.28));
    }

    .side-nav-links{
      list-style:none;
      padding:0;
      margin:0;
      width:100%;
      display:flex;
      flex-direction:column;
      gap:10px;
    }

    .side-nav-link{
      min-height:64px;
      padding:10px 6px;
      border-radius:22px;
      display:flex;
      flex-direction:column;
      justify-content:center;
      align-items:center;
      gap:4px;
      text-align:center;
      color:var(--muted);
      font-size:12px;
      line-height:1.2;
      border:1px solid transparent;
      position:relative;
    }

    .side-nav-link .nav-icon{
      width:18px;
      height:18px;
      border-radius:999px;
      display:grid;
      place-items:center;
      color:transparent;
      background:rgba(255,255,255,.1);
      border:1px solid rgba(255,255,255,.14);
    }

    .side-nav-link:hover,
    .side-nav-link:focus-visible{
      color:#fff;
      border-color:rgba(53,214,255,.22);
      background:rgba(53,214,255,.07);
      outline:none;
    }

    .side-nav-link.active{
      color:#fff;
      background:linear-gradient(180deg,rgba(53,214,255,.18),rgba(176,92,255,.12));
      border-color:rgba(53,214,255,.34);
      box-shadow:0 0 26px rgba(53,214,255,.14);
    }

    .side-nav-link.active .nav-icon{
      background:linear-gradient(135deg,var(--cyan),var(--violet));
      box-shadow:0 0 18px rgba(53,214,255,.4);
    }

    .side-nav-footer{
      margin-top:auto;
      font-size:10px;
      color:var(--soft);
      writing-mode:vertical-rl;
      letter-spacing:.12em;
    }

    .mobile-panel{display:none}

    .hero{
      position:relative;
      padding:92px 0 48px;
      overflow:hidden;
    }

    .hero::before{
      content:"";
      position:absolute;
      width:520px;
      height:520px;
      right:-130px;
      top:20px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(176,92,255,.2),transparent 68%);
      animation:floatGlow 9s ease-in-out infinite alternate;
      pointer-events:none;
    }

    @keyframes floatGlow{
      from{transform:translate3d(0,0,0) scale(1)}
      to{transform:translate3d(-30px,26px,0) scale(1.08)}
    }

    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      color:var(--gold);
      background:rgba(231,199,123,.08);
      border:1px solid rgba(231,199,123,.22);
      font-size:13px;
      font-weight:800;
      letter-spacing:.04em;
    }

    .section-kicker::before{
      content:"18+";
      color:#070A13;
      background:var(--gold);
      border-radius:999px;
      padding:1px 7px;
      font-size:11px;
      letter-spacing:0;
    }

    .gradient-title{
      background:linear-gradient(110deg,#fff 0%,#E8F8FF 42%,var(--cyan) 72%,var(--violet) 100%);
      -webkit-background-clip:text;
      background-clip:text;
      color:transparent;
    }

    h1{
      margin:20px 0 18px;
      max-width:920px;
      font-size:clamp(34px,5.4vw,66px);
      line-height:1.08;
      font-weight:900;
      letter-spacing:-.055em;
    }

    .lead{
      max-width:780px;
      color:#D6DAEA;
      font-size:17px;
      line-height:1.9;
    }

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

    .glow-button,
    .ghost-button{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      min-height:48px;
      border-radius:999px;
      padding:0 22px;
      font-weight:900;
      transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
    }

    .glow-button{
      color:#07101A;
      background:linear-gradient(135deg,var(--cyan),#8BEAFF 40%,var(--violet));
      box-shadow:0 0 32px rgba(53,214,255,.26),0 14px 34px rgba(0,0,0,.3);
      border:1px solid rgba(255,255,255,.18);
      animation:pulseBtn 2.8s ease-in-out infinite;
    }

    @keyframes pulseBtn{
      0%,100%{box-shadow:0 0 28px rgba(53,214,255,.22),0 14px 34px rgba(0,0,0,.3)}
      50%{box-shadow:0 0 46px rgba(53,214,255,.38),0 0 42px rgba(176,92,255,.18),0 14px 34px rgba(0,0,0,.3)}
    }

    .ghost-button{
      color:#fff;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.16);
      backdrop-filter:blur(16px);
    }

    .glow-button:hover,
    .ghost-button:hover{
      transform:translateY(-2px) scale(1.02);
    }

    .glow-button:active,
    .ghost-button:active{
      transform:scale(.98);
    }

    .glow-button:focus-visible,
    .ghost-button:focus-visible,
    .tag-pill:focus-visible,
    .video-card a:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible,
    button:focus-visible{
      outline:2px solid rgba(53,214,255,.78);
      outline-offset:3px;
    }

    .glass-card{
      border:1px solid var(--line);
      background:linear-gradient(180deg,rgba(255,255,255,.085),rgba(255,255,255,.045));
      backdrop-filter:blur(18px);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
      transition:transform .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease),box-shadow .24s var(--ease);
    }

    .glass-card:hover{
      transform:translateY(-5px);
      border-color:rgba(53,214,255,.3);
      background:linear-gradient(180deg,rgba(255,255,255,.11),rgba(255,255,255,.055));
      box-shadow:var(--shadow),var(--glow);
    }

    .privacy-note{
      margin-top:38px;
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:12px;
    }

    .privacy-note span{
      border:1px solid rgba(255,255,255,.13);
      background:rgba(255,255,255,.055);
      border-radius:18px;
      padding:14px 16px;
      color:var(--muted);
      font-size:14px;
      display:flex;
      align-items:center;
      gap:10px;
    }

    .privacy-note b{
      color:#fff;
      font-weight:900;
    }

    .section{
      padding:70px 0;
      position:relative;
    }

    .section-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:24px;
      margin-bottom:26px;
    }

    .section-head h2{
      font-size:clamp(26px,3.2vw,42px);
      line-height:1.16;
      font-weight:900;
      letter-spacing:-.035em;
      margin:10px 0 0;
    }

    .section-head p{
      max-width:560px;
      color:var(--muted);
      margin:0;
    }

    .filter-strip{
      position:sticky;
      top:18px;
      z-index:20;
      margin:0 auto 26px;
      padding:12px;
      border-radius:24px;
      border:1px solid rgba(255,255,255,.13);
      background:rgba(7,10,19,.72);
      backdrop-filter:blur(20px);
      display:flex;
      gap:10px;
      overflow-x:auto;
      scrollbar-width:none;
    }

    .filter-strip::-webkit-scrollbar{display:none}

    .tag-pill{
      flex:0 0 auto;
      border:1px solid rgba(255,255,255,.14);
      color:var(--muted);
      background:rgba(255,255,255,.06);
      padding:10px 14px;
      border-radius:999px;
      font-size:14px;
      font-weight:800;
      transition:transform .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
    }

    .tag-pill:hover,
    .tag-pill.active{
      color:#fff;
      background:linear-gradient(135deg,rgba(53,214,255,.18),rgba(176,92,255,.16));
      border-color:rgba(53,214,255,.34);
      transform:translateY(-1px);
    }

    .content-layout{
      display:grid;
      grid-template-columns:310px minmax(0,1fr);
      gap:24px;
      align-items:start;
    }

    .filter-panel{
      position:sticky;
      top:96px;
      padding:24px;
    }

    .filter-panel h3,
    .video-card h3,
    .recommend-card h3,
    .process-card h3{
      font-size:21px;
      font-weight:900;
      line-height:1.35;
      margin:0;
      letter-spacing:-.02em;
    }

    .filter-panel p,
    .video-card p,
    .recommend-card p,
    .process-card p{
      color:var(--muted);
      font-size:15px;
      margin:10px 0 0;
    }

    .side-list{
      margin:22px 0 0;
      padding:0;
      list-style:none;
      display:grid;
      gap:12px;
    }

    .side-list li{
      padding:13px 14px;
      border-radius:16px;
      border:1px solid rgba(255,255,255,.11);
      background:rgba(255,255,255,.045);
      color:#D6DAEA;
      font-size:14px;
      display:flex;
      justify-content:space-between;
      gap:12px;
    }

    .side-list strong{color:var(--cyan);font-weight:900}

    .notice-box{
      margin-top:18px;
      padding:16px;
      border-radius:18px;
      border:1px solid rgba(231,199,123,.24);
      background:rgba(231,199,123,.07);
      color:#EDE2C1;
      font-size:13px;
      line-height:1.75;
    }

    .video-grid{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:18px;
    }

    .video-card{
      position:relative;
      overflow:hidden;
      padding:0;
      min-height:100%;
    }

    .video-cover{
      aspect-ratio:16/10;
      position:relative;
      overflow:hidden;
      border-radius:28px 28px 0 0;
      background:
        radial-gradient(circle at 26% 24%,rgba(53,214,255,.36),transparent 30%),
        radial-gradient(circle at 82% 18%,rgba(176,92,255,.32),transparent 34%),
        linear-gradient(135deg,#111A37,#0A0D18 70%);
    }

    .video-cover::before{
      content:"";
      position:absolute;
      inset:0;
      opacity:.55;
      background:
        linear-gradient(120deg,transparent 0 42%,rgba(255,255,255,.09) 45%,transparent 55%),
        repeating-linear-gradient(90deg,rgba(255,255,255,.05) 0 1px,transparent 1px 18px);
    }

    .play-icon{
      position:absolute;
      left:50%;
      top:50%;
      width:58px;
      height:58px;
      transform:translate(-50%,-50%);
      border-radius:999px;
      background:rgba(7,10,19,.72);
      border:1px solid rgba(255,255,255,.25);
      box-shadow:0 0 34px rgba(53,214,255,.28);
      display:grid;
      place-items:center;
      transition:transform .24s var(--ease),box-shadow .24s var(--ease);
    }

    .play-icon::before{
      content:"";
      margin-left:4px;
      border-left:16px solid var(--cyan);
      border-top:10px solid transparent;
      border-bottom:10px solid transparent;
    }

    .video-card:hover .play-icon{
      transform:translate(-50%,-50%) scale(1.08);
      box-shadow:0 0 46px rgba(53,214,255,.42);
    }

    .badge-row{
      position:absolute;
      inset:14px 14px auto 14px;
      display:flex;
      justify-content:space-between;
      gap:8px;
      z-index:2;
    }

    .badge{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:26px;
      padding:3px 9px;
      border-radius:999px;
      font-size:12px;
      font-weight:900;
      color:#fff;
      background:rgba(7,10,19,.62);
      border:1px solid rgba(255,255,255,.18);
      backdrop-filter:blur(12px);
    }

    .badge.gold{
      color:#20180A;
      background:linear-gradient(135deg,var(--gold),#FFF2B7);
    }

    .video-body{
      padding:20px;
    }

    .card-meta{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin:0 0 12px;
    }

    .mini-tag{
      padding:5px 8px;
      border-radius:999px;
      background:rgba(53,214,255,.08);
      color:#B9F4FF;
      border:1px solid rgba(53,214,255,.18);
      font-size:12px;
      font-weight:800;
    }

    .video-link{
      margin-top:18px;
      display:inline-flex;
      align-items:center;
      gap:7px;
      color:var(--cyan);
      font-weight:900;
      font-size:14px;
    }

    .video-link:hover{color:#fff}

    .recommend-band{
      display:grid;
      grid-template-columns:1.2fr .9fr .9fr;
      gap:18px;
    }

    .recommend-card{
      padding:26px;
      min-height:220px;
      position:relative;
      overflow:hidden;
    }

    .recommend-card.featured{
      background:
        radial-gradient(circle at 18% 12%,rgba(53,214,255,.24),transparent 36%),
        linear-gradient(180deg,rgba(255,255,255,.095),rgba(255,255,255,.045));
    }

    .recommend-number{
      font-size:42px;
      font-weight:900;
      line-height:1;
      letter-spacing:-.06em;
      color:transparent;
      -webkit-text-stroke:1px rgba(53,214,255,.72);
      margin-bottom:18px;
    }

    .progress-line{
      margin-top:24px;
      height:8px;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      overflow:hidden;
    }

    .progress-line span{
      display:block;
      height:100%;
      border-radius:inherit;
      background:linear-gradient(90deg,var(--cyan),var(--violet));
      box-shadow:0 0 20px rgba(53,214,255,.44);
    }

    .process-grid{
      display:grid;
      grid-template-columns:repeat(4,minmax(0,1fr));
      gap:16px;
      counter-reset:step;
    }

    .process-card{
      padding:24px;
      position:relative;
      overflow:hidden;
      counter-increment:step;
    }

    .process-card::before{
      content:"0" counter(step);
      display:inline-flex;
      width:42px;
      height:42px;
      align-items:center;
      justify-content:center;
      border-radius:15px;
      margin-bottom:18px;
      font-weight:900;
      color:#07101A;
      background:linear-gradient(135deg,var(--cyan),var(--violet));
      box-shadow:0 0 22px rgba(53,214,255,.24);
    }

    .faq-list{
      display:grid;
      gap:14px;
    }

    .faq-item{
      border:1px solid rgba(255,255,255,.13);
      background:rgba(255,255,255,.055);
      border-radius:22px;
      overflow:hidden;
      transition:border-color .22s var(--ease),background .22s var(--ease);
    }

    .faq-item:hover,
    .faq-item.open{
      border-color:rgba(53,214,255,.34);
      background:rgba(255,255,255,.075);
    }

    .faq-question{
      width:100%;
      padding:20px 22px;
      border:0;
      background:transparent;
      color:#fff;
      text-align:left;
      display:flex;
      justify-content:space-between;
      gap:18px;
      font-weight:900;
    }

    .faq-question span:last-child{
      color:var(--cyan);
      transition:transform .22s var(--ease);
    }

    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}

    .faq-answer{
      display:none;
      padding:0 22px 20px;
      color:var(--muted);
      font-size:15px;
    }

    .faq-item.open .faq-answer{display:block}

    .cta-panel{
      position:relative;
      overflow:hidden;
      padding:34px;
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:28px;
      align-items:center;
    }

    .cta-panel::before{
      content:"";
      position:absolute;
      inset:-1px;
      pointer-events:none;
      opacity:.7;
      background:radial-gradient(circle at 20% 10%,rgba(53,214,255,.22),transparent 36%),radial-gradient(circle at 86% 80%,rgba(176,92,255,.2),transparent 34%);
    }

    .cta-panel > *{position:relative}

    .cta-panel h2{
      font-size:clamp(28px,3.4vw,44px);
      line-height:1.16;
      font-weight:900;
      letter-spacing:-.04em;
      margin:12px 0;
    }

    .cta-panel p{color:var(--muted);margin:0;max-width:680px}

    .contact-form{
      display:grid;
      gap:12px;
    }

    .field label{
      display:block;
      margin:0 0 7px;
      color:#E9EDFF;
      font-size:13px;
      font-weight:800;
    }

    .field input,
    .field select,
    .field textarea{
      width:100%;
      border:1px solid rgba(255,255,255,.13);
      border-radius:16px;
      background:rgba(7,10,19,.46);
      color:#fff;
      padding:12px 14px;
      outline:0;
      transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
    }

    .field textarea{min-height:96px;resize:vertical}

    .field input:focus,
    .field select:focus,
    .field textarea:focus{
      border-color:rgba(53,214,255,.62);
      box-shadow:0 0 0 4px rgba(53,214,255,.1);
      background:rgba(7,10,19,.62);
    }

    .site-footer{
      margin-left:var(--nav-w);
      border-top:1px solid rgba(255,255,255,.1);
      background:rgba(4,6,13,.64);
      backdrop-filter:blur(18px);
      padding:54px 0 28px;
    }

    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .7fr 1fr;
      gap:32px;
      align-items:start;
    }

    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      font-size:18px;
      font-weight:900;
    }

    .footer-desc,
    .footer-note{
      margin:14px 0 0;
      color:var(--muted);
      font-size:14px;
      line-height:1.8;
    }

    .footer-title{
      color:#fff;
      font-weight:900;
      margin-bottom:12px;
    }

    .footer-links{
      display:grid;
      gap:9px;
    }

    .footer-links a{
      color:var(--muted);
      font-size:14px;
    }

    .footer-links a:hover{
      color:var(--cyan);
      transform:translateX(3px);
    }

    .copyright{
      margin-top:34px;
      padding-top:20px;
      border-top:1px solid rgba(255,255,255,.09);
      display:flex;
      justify-content:space-between;
      gap:18px;
      color:var(--soft);
      font-size:13px;
    }

    @media (max-width:1180px){
      .container{width:min(100% - 36px,1060px)}
      .content-layout{grid-template-columns:280px minmax(0,1fr)}
      .process-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
      .recommend-band{grid-template-columns:1fr 1fr}
      .recommend-card.featured{grid-column:1/-1}
    }

    @media (max-width:900px){
      .site-shell,.site-footer{margin-left:0}
      .side-nav{display:none}
      .top-inner{
        position:sticky;
        top:0;
        min-height:68px;
        padding:12px 18px;
        display:flex;
        align-items:center;
        justify-content:space-between;
        background:rgba(7,10,19,.82);
        backdrop-filter:blur(20px);
        border-bottom:1px solid rgba(255,255,255,.12);
      }

      .top-brand{
        display:flex;
        align-items:center;
        gap:10px;
        color:#fff;
        font-weight:900;
      }

      .menu-toggle{
        width:44px;
        height:44px;
        border-radius:16px;
        border:1px solid rgba(255,255,255,.16);
        background:rgba(255,255,255,.07);
        color:#fff;
        font-size:20px;
      }

      .mobile-panel{
        display:none;
        position:fixed;
        top:68px;
        left:14px;
        right:14px;
        z-index:70;
        padding:12px;
        border-radius:22px;
        border:1px solid rgba(255,255,255,.14);
        background:rgba(7,10,19,.92);
        backdrop-filter:blur(22px);
        box-shadow:var(--shadow);
      }

      .mobile-panel.open{display:grid;gap:8px}

      .mobile-panel a{
        padding:13px 14px;
        border-radius:16px;
        color:var(--muted);
        font-weight:800;
      }

      .mobile-panel a.active,
      .mobile-panel a:hover{
        color:#fff;
        background:linear-gradient(135deg,rgba(53,214,255,.16),rgba(176,92,255,.12));
      }

      .hero{padding-top:58px}
      .privacy-note{grid-template-columns:repeat(2,1fr)}
      .content-layout{grid-template-columns:1fr}
      .filter-panel{position:relative;top:auto}
      .filter-strip{top:76px}
      .cta-panel{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .copyright{flex-direction:column}
    }

    @media (max-width:680px){
      .container{width:min(100% - 28px,100%)}
      .hero{padding:46px 0 34px}
      .lead{font-size:15.5px}
      .hero-actions{display:grid}
      .glow-button,.ghost-button{width:100%}
      .section{padding:50px 0}
      .section-head{display:block}
      .section-head p{margin-top:10px}
      .privacy-note{grid-template-columns:1fr}
      .video-grid{grid-template-columns:1fr}
      .recommend-band{grid-template-columns:1fr}
      .process-grid{grid-template-columns:1fr}
      .cta-panel{padding:24px}
      .filter-panel{padding:20px}
      .video-body{padding:18px}
      .top-brand span:last-child{font-size:14px}
    }

    @media (max-width:420px){
      h1{font-size:34px;letter-spacing:-.04em}
      .section-head h2,.cta-panel h2{font-size:26px}
      .top-brand span:last-child{max-width:220px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
      .privacy-note span{padding:12px}
    }

    @media (prefers-reduced-motion:reduce){
      *,*::before,*::after{animation:none!important;scroll-behavior:auto!important;transition:none!important}
    }

/* roulang page: category2 */
:root {
      --bg: #070A13;
      --bg-2: #0B1020;
      --panel: rgba(255,255,255,.065);
      --panel-strong: rgba(255,255,255,.095);
      --cyan: #35D6FF;
      --violet: #B05CFF;
      --pink: #D45CFF;
      --gold: #E7C77B;
      --text: #F3F6FF;
      --muted: #B9C0D4;
      --muted-2: #8790AA;
      --line: rgba(255,255,255,.12);
      --line-strong: rgba(53,214,255,.32);
      --nav-w: 104px;
      --radius-xl: 30px;
      --radius-lg: 24px;
      --radius-md: 18px;
      --shadow-cyan: 0 0 42px rgba(53,214,255,.16);
      --shadow-violet: 0 0 52px rgba(176,92,255,.14);
      --shadow-deep: 0 24px 90px rgba(0,0,0,.42);
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      min-height: 100vh;
      color: var(--text);
      background:
        radial-gradient(circle at 18% 10%, rgba(53,214,255,.18), transparent 34%),
        radial-gradient(circle at 88% 18%, rgba(176,92,255,.20), transparent 32%),
        radial-gradient(circle at 70% 88%, rgba(212,92,255,.12), transparent 36%),
        linear-gradient(135deg, var(--bg), var(--bg-2) 52%, #111425);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      line-height: 1.8;
      overflow-x: hidden;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      opacity: .38;
      background-image:
        linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
      background-size: 44px 44px;
      mask-image: radial-gradient(circle at 50% 20%, #000 0, transparent 72%);
      z-index: -2;
    }

    body::after {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      background:
        linear-gradient(115deg, transparent, rgba(255,255,255,.035), transparent),
        repeating-radial-gradient(circle at 25% 25%, rgba(255,255,255,.025) 0, rgba(255,255,255,.025) 1px, transparent 1px, transparent 8px);
      opacity: .45;
      z-index: -1;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color .25s ease, border-color .25s ease, background .25s ease, transform .25s ease;
    }

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

    button {
      cursor: pointer;
    }

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

    ::selection {
      color: #07101c;
      background: var(--cyan);
    }

    .container {
      width: min(1180px, calc(100% - 48px));
      margin: 0 auto;
    }

    .site-shell {
      min-height: 100vh;
      padding-left: var(--nav-w);
    }

    .top-nav {
      position: relative;
      z-index: 50;
    }

    .top-inner {
      display: none;
    }

    .side-nav {
      position: fixed;
      left: 0;
      top: 0;
      z-index: 60;
      width: var(--nav-w);
      height: 100vh;
      padding: 18px 12px;
      display: flex;
      flex-direction: column;
      align-items: stretch;
      background: rgba(7,10,19,.82);
      border-right: 1px solid rgba(53,214,255,.18);
      box-shadow: 18px 0 60px rgba(0,0,0,.38), 0 0 28px rgba(53,214,255,.08);
      backdrop-filter: blur(22px);
    }

    .side-nav-logo {
      display: flex;
      min-height: 106px;
      padding: 14px 8px;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      gap: 6px;
      border-radius: 24px;
      background: linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.035));
      border: 1px solid rgba(255,255,255,.1);
      text-align: center;
    }

    .side-nav-logo::before,
    .brand-mark {
      content: "";
      width: 38px;
      height: 38px;
      border-radius: 14px;
      display: inline-flex;
      background:
        linear-gradient(135deg, rgba(53,214,255,.98), rgba(176,92,255,.92));
      box-shadow: 0 0 28px rgba(53,214,255,.35), inset 0 0 0 1px rgba(255,255,255,.35);
      clip-path: polygon(18% 12%, 86% 50%, 18% 88%);
    }

    .logo-main {
      color: var(--text);
      font-size: 12px;
      font-weight: 850;
      line-height: 1.25;
      letter-spacing: -.03em;
    }

    .logo-sub {
      color: var(--muted-2);
      font-size: 10px;
      line-height: 1;
    }

    .side-nav-links {
      list-style: none;
      padding: 18px 0 0;
      margin: 0;
      display: grid;
      gap: 10px;
    }

    .side-nav-link {
      position: relative;
      min-height: 64px;
      padding: 8px 6px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      gap: 4px;
      color: var(--muted);
      font-size: 12px;
      font-weight: 700;
      line-height: 1.15;
      text-align: center;
      border-radius: 20px;
      border: 1px solid transparent;
    }

    .nav-icon {
      width: 22px;
      height: 22px;
      display: grid;
      place-items: center;
      color: var(--cyan);
      border-radius: 999px;
      background: rgba(53,214,255,.08);
      box-shadow: inset 0 0 0 1px rgba(53,214,255,.18);
    }

    .side-nav-link:hover,
    .side-nav-link:focus-visible {
      color: var(--text);
      background: rgba(255,255,255,.06);
      border-color: rgba(53,214,255,.22);
      outline: none;
    }

    .side-nav-link.active {
      color: #FFFFFF;
      background: linear-gradient(135deg, rgba(53,214,255,.18), rgba(176,92,255,.18));
      border-color: rgba(53,214,255,.32);
      box-shadow: 0 0 28px rgba(53,214,255,.12);
    }

    .side-nav-link.active::after {
      content: "";
      position: absolute;
      right: -13px;
      top: 18px;
      width: 4px;
      height: 28px;
      border-radius: 999px;
      background: linear-gradient(180deg, var(--cyan), var(--violet));
      box-shadow: 0 0 20px rgba(53,214,255,.6);
    }

    .side-nav-footer {
      margin-top: auto;
      padding: 12px 4px 4px;
      color: var(--muted-2);
      font-size: 10px;
      text-align: center;
      writing-mode: vertical-rl;
      align-self: center;
      letter-spacing: .12em;
    }

    .mobile-panel {
      display: none;
    }

    .section {
      padding: 92px 0;
      position: relative;
    }

    .section-tight {
      padding: 68px 0;
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 12px;
      color: var(--cyan);
      background: rgba(53,214,255,.08);
      border: 1px solid rgba(53,214,255,.22);
      border-radius: 999px;
      font-size: 13px;
      font-weight: 800;
      letter-spacing: .02em;
      box-shadow: 0 0 24px rgba(53,214,255,.08);
    }

    .section-kicker::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 999px;
      background: var(--gold);
      box-shadow: 0 0 12px rgba(231,199,123,.7);
    }

    .gradient-title {
      background: linear-gradient(115deg, #fff 8%, #dff7ff 36%, var(--cyan) 55%, var(--violet) 82%);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }

    .hero {
      min-height: 620px;
      padding: 72px 0 56px;
      display: flex;
      align-items: center;
      overflow: hidden;
    }

    .hero::before {
      content: "";
      position: absolute;
      right: 7%;
      top: 16%;
      width: 360px;
      height: 360px;
      border-radius: 999px;
      background: rgba(176,92,255,.18);
      filter: blur(80px);
      animation: floatGlow 9s ease-in-out infinite alternate;
    }

    .hero h1 {
      margin: 22px 0 18px;
      font-size: clamp(34px, 5.2vw, 66px);
      line-height: 1.08;
      font-weight: 950;
      letter-spacing: -.06em;
    }

    .hero-lead {
      max-width: 720px;
      color: var(--muted);
      font-size: 17px;
      line-height: 1.95;
    }

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

    .glow-button,
    .ghost-button {
      min-height: 50px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      padding: 13px 22px;
      border-radius: 999px;
      font-weight: 850;
      border: 1px solid transparent;
      transition: transform .25s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease;
    }

    .glow-button {
      color: #06111d;
      background: linear-gradient(135deg, var(--cyan), #78e5ff 42%, var(--gold));
      box-shadow: 0 0 30px rgba(53,214,255,.25), 0 16px 46px rgba(53,214,255,.14);
      animation: pulseGlow 2.8s ease-in-out infinite;
    }

    .ghost-button {
      color: var(--text);
      background: rgba(255,255,255,.055);
      border-color: rgba(255,255,255,.14);
      backdrop-filter: blur(14px);
    }

    .glow-button:hover,
    .ghost-button:hover {
      transform: translateY(-2px) scale(1.015);
    }

    .glow-button:active,
    .ghost-button:active {
      transform: scale(.98);
    }

    .glow-button:focus-visible,
    .ghost-button:focus-visible,
    input:focus-visible,
    textarea:focus-visible,
    select:focus-visible {
      outline: 3px solid rgba(53,214,255,.35);
      outline-offset: 3px;
    }

    .ghost-button:hover {
      border-color: rgba(53,214,255,.34);
      background: rgba(53,214,255,.085);
      box-shadow: var(--shadow-cyan);
    }

    .glass-card {
      position: relative;
      overflow: hidden;
      background: linear-gradient(180deg, rgba(255,255,255,.085), rgba(255,255,255,.045));
      border: 1px solid var(--line);
      border-radius: var(--radius-xl);
      box-shadow: var(--shadow-deep);
      backdrop-filter: blur(18px);
      transition: transform .28s ease, border-color .28s ease, background .28s ease, box-shadow .28s ease;
    }

    .glass-card::before {
      content: "";
      position: absolute;
      inset: 0;
      pointer-events: none;
      background: linear-gradient(135deg, rgba(255,255,255,.13), transparent 34%, rgba(53,214,255,.055));
      opacity: .7;
    }

    .glass-card > * {
      position: relative;
      z-index: 1;
    }

    .glass-card:hover {
      transform: translateY(-6px);
      border-color: rgba(53,214,255,.28);
      background: linear-gradient(180deg, rgba(255,255,255,.105), rgba(255,255,255,.06));
      box-shadow: var(--shadow-deep), var(--shadow-cyan);
    }

    .tag-pill,
    .mini-badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 7px 10px;
      color: var(--muted);
      background: rgba(255,255,255,.06);
      border: 1px solid rgba(255,255,255,.12);
      border-radius: 999px;
      font-size: 12px;
      font-weight: 800;
      line-height: 1;
      white-space: nowrap;
    }

    .tag-pill.cyan {
      color: #c9f6ff;
      border-color: rgba(53,214,255,.24);
      background: rgba(53,214,255,.09);
    }

    .tag-pill.violet {
      color: #f0dcff;
      border-color: rgba(176,92,255,.26);
      background: rgba(176,92,255,.10);
    }

    .tag-pill.gold {
      color: #ffe8ae;
      border-color: rgba(231,199,123,.28);
      background: rgba(231,199,123,.10);
    }

    .privacy-note {
      display: grid;
      grid-template-columns: auto 1fr auto;
      gap: 16px;
      align-items: center;
      padding: 18px 20px;
      border-radius: 24px;
      background: rgba(53,214,255,.075);
      border: 1px solid rgba(53,214,255,.18);
      box-shadow: inset 0 0 0 1px rgba(255,255,255,.04);
    }

    .age-shield {
      width: 56px;
      height: 56px;
      display: grid;
      place-items: center;
      border-radius: 18px;
      color: #06111d;
      background: linear-gradient(135deg, var(--gold), var(--cyan));
      font-weight: 950;
      box-shadow: 0 0 28px rgba(231,199,123,.18);
    }

    .dashboard {
      min-height: 420px;
      padding: 24px;
      transform: perspective(1000px) rotateY(-5deg) rotateX(3deg);
    }

    .dash-screen {
      border-radius: 26px;
      padding: 18px;
      background:
        radial-gradient(circle at 22% 18%, rgba(53,214,255,.22), transparent 30%),
        radial-gradient(circle at 82% 72%, rgba(176,92,255,.20), transparent 34%),
        linear-gradient(145deg, rgba(8,13,29,.88), rgba(21,24,45,.88));
      border: 1px solid rgba(255,255,255,.12);
      box-shadow: inset 0 0 50px rgba(255,255,255,.035);
    }

    .dash-cover {
      height: 190px;
      border-radius: 22px;
      background:
        linear-gradient(135deg, rgba(53,214,255,.28), transparent 38%),
        radial-gradient(circle at 65% 40%, rgba(212,92,255,.34), transparent 30%),
        linear-gradient(140deg, #0d1731, #16112c);
      position: relative;
      overflow: hidden;
      border: 1px solid rgba(255,255,255,.1);
    }

    .dash-cover::after {
      content: "";
      position: absolute;
      inset: 18px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,.14);
      filter: blur(.2px);
      transform: rotate(-15deg);
    }

    .play-button {
      position: absolute;
      left: 50%;
      top: 50%;
      width: 68px;
      height: 68px;
      transform: translate(-50%, -50%);
      border-radius: 999px;
      display: grid;
      place-items: center;
      background: rgba(53,214,255,.18);
      border: 1px solid rgba(53,214,255,.4);
      box-shadow: 0 0 34px rgba(53,214,255,.3);
    }

    .play-button::before {
      content: "";
      width: 0;
      height: 0;
      margin-left: 5px;
      border-left: 18px solid #fff;
      border-top: 12px solid transparent;
      border-bottom: 12px solid transparent;
    }

    .metric-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 14px;
    }

    .metric-card {
      padding: 20px;
      border-radius: 22px;
      background: rgba(255,255,255,.055);
      border: 1px solid rgba(255,255,255,.11);
    }

    .metric-num {
      color: var(--cyan);
      font-size: 30px;
      font-weight: 950;
      letter-spacing: -.04em;
      text-shadow: 0 0 20px rgba(53,214,255,.26);
    }

    .step-card {
      min-height: 260px;
      padding: 28px;
    }

    .step-index {
      width: 48px;
      height: 48px;
      display: grid;
      place-items: center;
      border-radius: 16px;
      color: #07101c;
      background: linear-gradient(135deg, var(--cyan), var(--violet));
      font-weight: 950;
      box-shadow: 0 0 26px rgba(53,214,255,.18);
    }

    .timeline-line {
      position: absolute;
      left: 50%;
      top: 34px;
      bottom: 34px;
      width: 1px;
      background: linear-gradient(180deg, transparent, rgba(53,214,255,.45), rgba(176,92,255,.45), transparent);
      transform: translateX(-50%);
      pointer-events: none;
    }

    .feature-list {
      display: grid;
      gap: 12px;
      margin-top: 18px;
    }

    .feature-list li {
      list-style: none;
      display: flex;
      gap: 10px;
      color: var(--muted);
      font-size: 15px;
    }

    .feature-list li::before {
      content: "";
      flex: 0 0 auto;
      width: 8px;
      height: 8px;
      margin-top: 11px;
      border-radius: 999px;
      background: var(--cyan);
      box-shadow: 0 0 12px rgba(53,214,255,.65);
    }

    .recommend-row {
      display: grid;
      grid-template-columns: 320px 1fr auto;
      gap: 24px;
      align-items: center;
      padding: 18px;
    }

    .abstract-cover {
      min-height: 190px;
      border-radius: 24px;
      overflow: hidden;
      position: relative;
      background:
        radial-gradient(circle at 22% 20%, rgba(53,214,255,.28), transparent 30%),
        radial-gradient(circle at 75% 64%, rgba(176,92,255,.28), transparent 34%),
        linear-gradient(145deg, #0b1430, #161225);
      border: 1px solid rgba(255,255,255,.10);
    }

    .abstract-cover::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(115deg, transparent 0 28%, rgba(255,255,255,.08) 29%, transparent 42%),
        repeating-linear-gradient(0deg, rgba(255,255,255,.035) 0, rgba(255,255,255,.035) 1px, transparent 1px, transparent 10px);
      opacity: .75;
    }

    .abstract-cover .play-button {
      width: 56px;
      height: 56px;
    }

    .comparison {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }

    .compare-card {
      padding: 28px;
      border-radius: 28px;
      border: 1px solid rgba(255,255,255,.12);
      background: rgba(255,255,255,.055);
    }

    .compare-card.highlight {
      border-color: rgba(231,199,123,.34);
      background:
        linear-gradient(135deg, rgba(231,199,123,.10), rgba(176,92,255,.08)),
        rgba(255,255,255,.06);
      box-shadow: 0 0 44px rgba(231,199,123,.08);
    }

    .compare-list {
      display: grid;
      gap: 12px;
      margin-top: 20px;
      padding: 0;
    }

    .compare-list li {
      list-style: none;
      padding: 13px 14px;
      border-radius: 16px;
      color: var(--muted);
      background: rgba(0,0,0,.16);
      border: 1px solid rgba(255,255,255,.08);
    }

    .trust-grid {
      display: grid;
      grid-template-columns: 1.2fr .8fr;
      gap: 22px;
    }

    .trust-item {
      padding: 22px;
      border-radius: 24px;
      background: rgba(255,255,255,.055);
      border: 1px solid rgba(255,255,255,.10);
    }

    .contact-panel {
      padding: 34px;
      border-radius: 32px;
      background:
        linear-gradient(135deg, rgba(53,214,255,.12), rgba(176,92,255,.12)),
        rgba(255,255,255,.055);
      border: 1px solid rgba(53,214,255,.20);
      box-shadow: var(--shadow-deep), var(--shadow-cyan);
    }

    .form-field {
      display: grid;
      gap: 8px;
    }

    .form-field label {
      color: var(--text);
      font-weight: 800;
      font-size: 14px;
    }

    .form-field input,
    .form-field textarea,
    .form-field select {
      width: 100%;
      color: var(--text);
      background: rgba(5,8,18,.58);
      border: 1px solid rgba(255,255,255,.12);
      border-radius: 18px;
      padding: 14px 15px;
      transition: border-color .25s ease, box-shadow .25s ease, background .25s ease;
    }

    .form-field input:focus,
    .form-field textarea:focus,
    .form-field select:focus {
      border-color: rgba(53,214,255,.55);
      box-shadow: 0 0 0 4px rgba(53,214,255,.10);
      background: rgba(8,13,29,.78);
      outline: none;
    }

    .form-field textarea {
      min-height: 116px;
      resize: vertical;
    }

    .faq-list {
      display: grid;
      gap: 14px;
    }

    .faq-item {
      border-radius: 22px;
      background: rgba(255,255,255,.055);
      border: 1px solid rgba(255,255,255,.11);
      overflow: hidden;
      transition: border-color .25s ease, background .25s ease;
    }

    .faq-item:hover,
    .faq-item.active {
      border-color: rgba(53,214,255,.30);
      background: rgba(255,255,255,.075);
    }

    .faq-question {
      width: 100%;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      padding: 20px 22px;
      color: var(--text);
      background: transparent;
      border: 0;
      text-align: left;
      font-weight: 850;
    }

    .faq-question span:last-child {
      width: 28px;
      height: 28px;
      display: grid;
      place-items: center;
      border-radius: 999px;
      color: var(--cyan);
      background: rgba(53,214,255,.08);
      transition: transform .25s ease;
    }

    .faq-item.active .faq-question span:last-child {
      transform: rotate(45deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height .3s ease;
    }

    .faq-answer p {
      margin: 0;
      padding: 0 22px 22px;
      color: var(--muted);
    }

    .site-footer {
      padding: 56px 0 32px;
      margin-top: 40px;
      border-top: 1px solid rgba(255,255,255,.10);
      background: rgba(5,8,18,.40);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.1fr .8fr 1fr;
      gap: 30px;
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      color: var(--text);
      font-weight: 950;
      letter-spacing: -.02em;
      margin-bottom: 14px;
    }

    .footer-desc,
    .footer-note {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.9;
    }

    .footer-title {
      color: var(--text);
      font-weight: 900;
      margin-bottom: 14px;
    }

    .footer-links {
      display: grid;
      gap: 10px;
    }

    .footer-links a {
      color: var(--muted);
      font-size: 14px;
    }

    .footer-links a:hover,
    .footer-links a:focus-visible {
      color: var(--cyan);
      outline: none;
    }

    .copyright {
      margin-top: 34px;
      padding-top: 22px;
      border-top: 1px solid rgba(255,255,255,.08);
      display: flex;
      justify-content: space-between;
      gap: 16px;
      color: var(--muted-2);
      font-size: 13px;
    }

    @keyframes pulseGlow {
      0%, 100% { box-shadow: 0 0 28px rgba(53,214,255,.22), 0 16px 46px rgba(53,214,255,.13); }
      50% { box-shadow: 0 0 44px rgba(53,214,255,.36), 0 18px 58px rgba(176,92,255,.16); }
    }

    @keyframes floatGlow {
      0% { transform: translate3d(0,0,0) scale(1); }
      100% { transform: translate3d(-36px,24px,0) scale(1.08); }
    }

    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: .01ms !important;
      }
    }

    @media (max-width: 1180px) {
      .container {
        width: min(100% - 40px, 980px);
      }

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

      .recommend-row {
        grid-template-columns: 260px 1fr;
      }

      .recommend-row .button-row {
        grid-column: 1 / -1;
        margin-top: 0;
      }
    }

    @media (max-width: 1024px) {
      :root {
        --nav-w: 92px;
      }

      .dashboard {
        transform: none;
      }

      .hero {
        min-height: auto;
        padding-top: 58px;
      }

      .timeline-line {
        display: none;
      }

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

    @media (max-width: 768px) {
      .site-shell {
        padding-left: 0;
        padding-top: 72px;
      }

      .top-inner {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 70;
        height: 72px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0 18px;
        background: rgba(7,10,19,.84);
        border-bottom: 1px solid rgba(53,214,255,.18);
        backdrop-filter: blur(18px);
      }

      .top-brand {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        color: var(--text);
        font-weight: 950;
        letter-spacing: -.03em;
        font-size: 15px;
      }

      .brand-mark {
        width: 34px;
        height: 34px;
        border-radius: 12px;
      }

      .menu-toggle {
        width: 42px;
        height: 42px;
        display: grid;
        place-items: center;
        color: var(--text);
        background: rgba(255,255,255,.07);
        border: 1px solid rgba(255,255,255,.13);
        border-radius: 14px;
      }

      .side-nav {
        display: none;
      }

      .mobile-panel {
        position: fixed;
        top: 72px;
        left: 12px;
        right: 12px;
        z-index: 69;
        display: none;
        padding: 12px;
        border-radius: 22px;
        background: rgba(7,10,19,.94);
        border: 1px solid rgba(53,214,255,.18);
        box-shadow: var(--shadow-deep);
        backdrop-filter: blur(18px);
      }

      .mobile-panel.open {
        display: grid;
        gap: 8px;
      }

      .mobile-panel a {
        padding: 13px 14px;
        border-radius: 16px;
        color: var(--muted);
        font-weight: 800;
      }

      .mobile-panel a.active,
      .mobile-panel a:hover {
        color: #fff;
        background: linear-gradient(135deg, rgba(53,214,255,.15), rgba(176,92,255,.13));
      }

      .container {
        width: min(100% - 28px, 680px);
      }

      .section {
        padding: 64px 0;
      }

      .section-tight {
        padding: 50px 0;
      }

      .privacy-note {
        grid-template-columns: 1fr;
      }

      .metric-grid,
      .comparison,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .recommend-row {
        grid-template-columns: 1fr;
      }

      .copyright {
        flex-direction: column;
      }

      .hero-actions .glow-button,
      .hero-actions .ghost-button,
      .button-row .glow-button,
      .button-row .ghost-button {
        width: 100%;
      }
    }

    @media (max-width: 520px) {
      .hero h1 {
        font-size: 36px;
      }

      .hero-lead {
        font-size: 15px;
      }

      .dashboard,
      .contact-panel,
      .step-card,
      .compare-card {
        padding: 20px;
        border-radius: 24px;
      }

      .metric-card {
        padding: 16px;
      }

      .tag-pill {
        font-size: 11px;
      }

      .abstract-cover {
        min-height: 160px;
      }
    }