/* roulang page: index */
:root{
      --bg:#0b1020;
      --bg-soft:#111833;
      --surface:#ffffff;
      --surface-2:#f7f8fc;
      --text:#111827;
      --muted:#657083;
      --weak:#94a3b8;
      --line:#e6e9f2;
      --primary:#7c3aed;
      --primary-2:#ec4899;
      --primary-3:#06b6d4;
      --accent:#ffb86c;
      --safe:#10b981;
      --danger:#ef4444;
      --radius-xs:10px;
      --radius-sm:14px;
      --radius-md:20px;
      --radius-lg:28px;
      --radius-xl:36px;
      --shadow-sm:0 10px 24px rgba(15,23,42,.08);
      --shadow-md:0 18px 46px rgba(15,23,42,.14);
      --shadow-lg:0 30px 90px rgba(17,24,39,.22);
      --container:1180px;
      --ease:all .25s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 8% -5%, rgba(124,58,237,.22), transparent 34%),
        radial-gradient(circle at 92% 0%, rgba(236,72,153,.18), transparent 32%),
        linear-gradient(180deg,#fbfbff 0%,#f6f7fb 44%,#ffffff 100%);
      line-height:1.7;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    ::selection{background:rgba(124,58,237,.2);color:#1f1147}
    .container{
      width:min(var(--container), calc(100% - 40px));
      margin-inline:auto;
    }
    .skip-link{
      position:absolute;
      left:-999px;
      top:12px;
      z-index:100;
      background:#fff;
      color:var(--primary);
      padding:10px 14px;
      border-radius:999px;
      box-shadow:var(--shadow-sm);
    }
    .skip-link:focus{left:12px;outline:3px solid rgba(124,58,237,.22)}
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      backdrop-filter:blur(18px);
      background:rgba(255,255,255,.82);
      border-bottom:1px solid rgba(230,233,242,.9);
    }
    .nav-wrap{
      min-height:76px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
      font-weight:900;
      letter-spacing:-.03em;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:15px;
      display:grid;
      place-items:center;
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2) 58%,var(--accent));
      box-shadow:0 14px 28px rgba(124,58,237,.24);
      flex:0 0 auto;
    }
    .brand-text{
      max-width:430px;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
      font-size:18px;
    }
    .desktop-nav{
      display:flex;
      align-items:center;
      gap:8px;
      padding:6px;
      border:1px solid var(--line);
      border-radius:999px;
      background:rgba(255,255,255,.7);
    }
    .nav-link{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:40px;
      padding:0 18px;
      border-radius:999px;
      font-weight:800;
      color:#374151;
    }
    .nav-link:hover{
      color:var(--primary);
      background:rgba(124,58,237,.08);
      transform:translateY(-1px);
    }
    .nav-link.active{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      box-shadow:0 12px 22px rgba(124,58,237,.18);
    }
    .header-action{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .age-pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:10px 13px;
      border-radius:999px;
      border:1px solid rgba(16,185,129,.22);
      background:rgba(16,185,129,.08);
      color:#047857;
      font-weight:800;
      font-size:13px;
      white-space:nowrap;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      border:0;
      border-radius:999px;
      min-height:48px;
      padding:0 22px;
      font-weight:900;
      letter-spacing:-.01em;
      transition:var(--ease);
      user-select:none;
    }
    .btn:focus-visible,
    .nav-link:focus-visible,
    .mobile-tab a:focus-visible,
    input:focus-visible,
    textarea:focus-visible{
      outline:4px solid rgba(124,58,237,.18);
      outline-offset:3px;
    }
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      box-shadow:0 16px 36px rgba(124,58,237,.24);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 22px 48px rgba(124,58,237,.3)}
    .btn-primary:active{transform:translateY(0);box-shadow:0 10px 22px rgba(124,58,237,.22)}
    .btn-secondary{
      color:#261245;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
    }
    .btn-secondary:hover{border-color:rgba(124,58,237,.26);color:var(--primary);transform:translateY(-2px)}
    .btn-ghost{
      color:#fff;
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.2);
    }
    .btn-ghost:hover{background:rgba(255,255,255,.2);transform:translateY(-2px)}
    main{position:relative}
    section{position:relative}
    .section-pad{padding:86px 0}
    .section-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:28px;
      margin-bottom:30px;
    }
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      font-weight:900;
      font-size:13px;
      color:var(--primary);
      background:rgba(124,58,237,.09);
      border:1px solid rgba(124,58,237,.12);
      margin-bottom:12px;
    }
    .section-title{
      margin:0;
      font-size:clamp(28px,3.1vw,44px);
      line-height:1.12;
      letter-spacing:-.045em;
      font-weight:950;
    }
    .section-desc{
      margin:12px 0 0;
      max-width:690px;
      color:var(--muted);
      font-size:16px;
    }
    .hero{
      padding:54px 0 82px;
    }
    .hero-stage{
      overflow:hidden;
      border-radius:var(--radius-xl);
      padding:34px;
      background:
        linear-gradient(135deg,rgba(11,16,32,.94),rgba(37,18,72,.94) 58%,rgba(99,18,76,.92)),
        radial-gradient(circle at 84% 10%,rgba(255,184,108,.32),transparent 28%);
      color:#fff;
      box-shadow:var(--shadow-lg);
      border:1px solid rgba(255,255,255,.12);
      position:relative;
    }
    .hero-stage:before{
      content:"";
      position:absolute;
      inset:-2px;
      background:
        radial-gradient(circle at 18% 20%,rgba(6,182,212,.18),transparent 22%),
        radial-gradient(circle at 76% 76%,rgba(236,72,153,.18),transparent 28%);
      pointer-events:none;
    }
    .hero-grid{
      position:relative;
      display:grid;
      grid-template-columns:1.08fr .92fr;
      gap:28px;
      align-items:stretch;
    }
    .hero-copy{
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      gap:28px;
      min-height:520px;
    }
    .hero-badge-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-bottom:18px;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:8px 12px;
      border-radius:999px;
      font-size:13px;
      font-weight:900;
      border:1px solid rgba(255,255,255,.15);
      background:rgba(255,255,255,.09);
      color:rgba(255,255,255,.92);
      backdrop-filter:blur(10px);
    }
    .badge-light{
      color:#513178;
      background:#fff;
      border:1px solid var(--line);
    }
    h1{
      margin:0;
      max-width:820px;
      font-size:clamp(42px,6vw,82px);
      line-height:.98;
      letter-spacing:-.075em;
      font-weight:1000;
    }
    .hero-intro{
      margin:22px 0 0;
      max-width:760px;
      color:rgba(255,255,255,.78);
      font-size:18px;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:14px;
      margin-top:28px;
    }
    .kpi-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
      margin-top:20px;
    }
    .kpi{
      border:1px solid rgba(255,255,255,.14);
      background:rgba(255,255,255,.08);
      border-radius:20px;
      padding:16px;
      min-height:116px;
      backdrop-filter:blur(12px);
    }
    .kpi strong{
      display:block;
      font-size:32px;
      line-height:1;
      letter-spacing:-.05em;
    }
    .kpi span{
      display:block;
      margin-top:10px;
      color:rgba(255,255,255,.68);
      font-size:13px;
    }
    .compare-panel{
      display:grid;
      gap:14px;
      align-content:center;
    }
    .plan-card{
      position:relative;
      border-radius:26px;
      padding:22px;
      background:rgba(255,255,255,.1);
      border:1px solid rgba(255,255,255,.14);
      backdrop-filter:blur(16px);
      transition:var(--ease);
    }
    .plan-card:hover{transform:translateY(-4px);background:rgba(255,255,255,.14)}
    .plan-card.recommend{
      background:#fff;
      color:var(--text);
      border:0;
      box-shadow:0 26px 70px rgba(0,0,0,.24);
      transform:scale(1.02);
      order:-1;
    }
    .plan-top{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-bottom:12px;
    }
    .plan-title{
      font-size:20px;
      font-weight:950;
      letter-spacing:-.04em;
    }
    .plan-note{
      margin:0;
      color:rgba(255,255,255,.68);
      font-size:14px;
    }
    .recommend .plan-note{color:var(--muted)}
    .plan-list{
      display:grid;
      gap:9px;
      margin:16px 0 0;
      padding:0;
      list-style:none;
    }
    .plan-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      font-size:14px;
      color:rgba(255,255,255,.76);
    }
    .recommend .plan-list li{color:#475569}
    .check{
      width:20px;
      height:20px;
      flex:0 0 auto;
      border-radius:999px;
      display:grid;
      place-items:center;
      color:#fff;
      background:linear-gradient(135deg,var(--safe),#22c55e);
      font-size:12px;
      font-weight:900;
      margin-top:1px;
    }
    .plan-tag{
      display:inline-flex;
      align-items:center;
      padding:6px 10px;
      border-radius:999px;
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      font-size:12px;
      font-weight:900;
      white-space:nowrap;
    }
    .cards-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .card{
      background:rgba(255,255,255,.86);
      border:1px solid rgba(230,233,242,.95);
      border-radius:var(--radius-lg);
      padding:24px;
      box-shadow:var(--shadow-sm);
      transition:var(--ease);
    }
    .card:hover{
      transform:translateY(-5px);
      box-shadow:var(--shadow-md);
      border-color:rgba(124,58,237,.22);
    }
    .icon-box{
      width:50px;
      height:50px;
      border-radius:18px;
      display:grid;
      place-items:center;
      font-size:22px;
      background:linear-gradient(135deg,rgba(124,58,237,.12),rgba(236,72,153,.12));
      color:var(--primary);
      margin-bottom:18px;
    }
    .card h3{
      margin:0;
      font-size:20px;
      line-height:1.25;
      letter-spacing:-.035em;
      font-weight:950;
    }
    .card p{
      margin:10px 0 0;
      color:var(--muted);
      font-size:15px;
    }
    .timeline{
      display:grid;
      gap:14px;
    }
    .dynamic-card{
      display:grid;
      grid-template-columns:150px 1fr auto;
      gap:18px;
      align-items:center;
      padding:18px;
      border-radius:24px;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
      transition:var(--ease);
    }
    .dynamic-card:hover{transform:translateX(4px);border-color:rgba(124,58,237,.24)}
    .date-chip{
      border-radius:18px;
      background:linear-gradient(135deg,#f3edff,#fff2f8);
      color:var(--primary);
      padding:14px;
      text-align:center;
      font-weight:950;
    }
    .date-chip span{display:block;font-size:12px;color:#8b5cf6}
    .dynamic-card h3{margin:0;font-size:18px;font-weight:950;letter-spacing:-.025em}
    .dynamic-card p{margin:6px 0 0;color:var(--muted);font-size:14px}
    .status-dot{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 11px;
      border-radius:999px;
      background:rgba(16,185,129,.1);
      color:#047857;
      font-weight:900;
      font-size:13px;
      white-space:nowrap;
    }
    .status-dot:before{
      content:"";
      width:8px;
      height:8px;
      border-radius:999px;
      background:var(--safe);
      box-shadow:0 0 0 6px rgba(16,185,129,.13);
    }
    .qa-wrap{
      display:grid;
      grid-template-columns:.86fr 1.14fr;
      gap:22px;
      align-items:start;
    }
    .answer-panel{
      padding:28px;
      border-radius:var(--radius-xl);
      background:linear-gradient(135deg,#17112f,#2c154e 62%,#421a55);
      color:#fff;
      box-shadow:var(--shadow-lg);
      position:sticky;
      top:98px;
    }
    .answer-panel p{color:rgba(255,255,255,.72);margin:12px 0 0}
    .answer-metrics{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:12px;
      margin-top:22px;
    }
    .answer-metrics div{
      padding:14px;
      border-radius:18px;
      background:rgba(255,255,255,.1);
      border:1px solid rgba(255,255,255,.12);
    }
    .answer-metrics strong{display:block;font-size:26px;letter-spacing:-.04em}
    .faq-list{
      display:grid;
      gap:12px;
    }
    details.faq-item{
      border:1px solid var(--line);
      background:#fff;
      border-radius:22px;
      padding:0;
      box-shadow:var(--shadow-sm);
      overflow:hidden;
      transition:var(--ease);
    }
    details.faq-item:hover{border-color:rgba(124,58,237,.22)}
    details.faq-item[open]{box-shadow:var(--shadow-md)}
    .faq-item summary{
      cursor:pointer;
      list-style:none;
      padding:20px 22px;
      font-weight:950;
      letter-spacing:-.02em;
      display:flex;
      justify-content:space-between;
      gap:16px;
      align-items:center;
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{
      content:"+";
      width:30px;
      height:30px;
      flex:0 0 auto;
      border-radius:999px;
      display:grid;
      place-items:center;
      background:rgba(124,58,237,.08);
      color:var(--primary);
      font-weight:950;
      transition:var(--ease);
    }
    .faq-item[open] summary:after{
      content:"−";
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      transform:rotate(180deg);
    }
    .faq-item p{
      margin:0;
      padding:0 22px 22px;
      color:var(--muted);
      font-size:15px;
    }
    .news-layout{
      display:grid;
      grid-template-columns:1.45fr .72fr;
      gap:22px;
      align-items:start;
    }
    .news-list{
      border-radius:var(--radius-xl);
      overflow:hidden;
      border:1px solid var(--line);
      background:#fff;
      box-shadow:var(--shadow-sm);
    }
    .news-item{
      display:grid;
      grid-template-columns:112px 1fr;
      gap:18px;
      padding:20px;
      border-bottom:1px solid var(--line);
      transition:var(--ease);
    }
    .news-item:last-child{border-bottom:0}
    .news-item:hover{background:#fbf7ff}
    .news-date{
      font-weight:950;
      color:var(--primary);
      letter-spacing:-.02em;
    }
    .news-date small{
      display:block;
      margin-top:3px;
      color:var(--weak);
      font-weight:800;
    }
    .news-item h3{
      margin:0;
      font-size:18px;
      font-weight:950;
      letter-spacing:-.025em;
    }
    .news-item a:hover h3{color:var(--primary)}
    .news-item p{margin:7px 0 0;color:var(--muted);font-size:14px}
    .recommend-box{
      border-radius:var(--radius-xl);
      padding:24px;
      background:linear-gradient(180deg,#fff,#fbf8ff);
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
    }
    .rank-list{
      display:grid;
      gap:12px;
      margin:18px 0 0;
      padding:0;
      list-style:none;
    }
    .rank-list li{
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding:13px;
      border-radius:18px;
      background:#fff;
      border:1px solid rgba(230,233,242,.85);
    }
    .rank-num{
      width:28px;
      height:28px;
      border-radius:10px;
      display:grid;
      place-items:center;
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      font-weight:950;
      flex:0 0 auto;
    }
    .calendar-strip{
      display:grid;
      grid-template-columns:1fr 1fr 1fr 1fr;
      gap:14px;
    }
    .calendar-card{
      border-radius:24px;
      padding:20px;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
      transition:var(--ease);
    }
    .calendar-card:hover{transform:translateY(-4px);border-color:rgba(6,182,212,.28)}
    .calendar-day{
      display:inline-flex;
      align-items:center;
      padding:7px 10px;
      border-radius:999px;
      color:#075985;
      background:rgba(6,182,212,.1);
      font-weight:950;
      font-size:13px;
      margin-bottom:12px;
    }
    .calendar-card h3{margin:0;font-size:18px;font-weight:950;letter-spacing:-.025em}
    .calendar-card p{margin:8px 0 0;color:var(--muted);font-size:14px}
    .changelog{
      display:grid;
      grid-template-columns:.85fr 1.15fr;
      gap:22px;
      align-items:stretch;
    }
    .version-card{
      border-radius:var(--radius-xl);
      padding:28px;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
    }
    .version-number{
      display:inline-flex;
      align-items:center;
      padding:8px 12px;
      border-radius:999px;
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      font-weight:950;
      margin-bottom:18px;
    }
    .change-list{
      display:grid;
      gap:14px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .change-list li{
      position:relative;
      padding:18px 18px 18px 50px;
      border-radius:22px;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
    }
    .change-list li:before{
      content:"";
      position:absolute;
      left:20px;
      top:24px;
      width:12px;
      height:12px;
      border-radius:999px;
      background:linear-gradient(135deg,var(--primary-3),var(--primary));
      box-shadow:0 0 0 7px rgba(6,182,212,.11);
    }
    .change-list h3{margin:0;font-size:18px;font-weight:950;letter-spacing:-.02em}
    .change-list p{margin:6px 0 0;color:var(--muted);font-size:14px}
    .security{
      overflow:hidden;
      border-radius:var(--radius-xl);
      padding:34px;
      color:#fff;
      background:
        linear-gradient(135deg,#09111f,#13233d 56%,#111827),
        radial-gradient(circle at 85% 20%,rgba(16,185,129,.24),transparent 28%);
      box-shadow:var(--shadow-lg);
    }
    .security-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:14px;
      margin-top:28px;
    }
    .security-card{
      border-radius:24px;
      padding:20px;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.08);
      backdrop-filter:blur(12px);
    }
    .security-card h3{margin:0;font-size:18px;font-weight:950}
    .security-card p{margin:8px 0 0;color:rgba(255,255,255,.7);font-size:14px}
    .app-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:22px;
      align-items:stretch;
    }
    .app-card{
      border-radius:var(--radius-xl);
      padding:30px;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
    }
    .device-panel{
      min-height:100%;
      color:#fff;
      background:
        radial-gradient(circle at 20% 16%,rgba(255,184,108,.22),transparent 26%),
        linear-gradient(135deg,var(--primary),var(--primary-2));
      overflow:hidden;
      position:relative;
    }
    .device-row{
      display:grid;
      gap:12px;
      margin-top:24px;
    }
    .device-row div{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:14px;
      border-radius:18px;
      background:rgba(255,255,255,.14);
      border:1px solid rgba(255,255,255,.14);
    }
    .lead-form{
      display:grid;
      gap:14px;
      margin-top:20px;
    }
    .form-row{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:12px;
    }
    .input{
      width:100%;
      min-height:52px;
      border-radius:16px;
      border:1px solid var(--line);
      background:#fff;
      padding:0 15px;
      color:var(--text);
      transition:var(--ease);
    }
    .input:hover{border-color:rgba(124,58,237,.22)}
    textarea.input{
      min-height:106px;
      padding-top:14px;
      resize:vertical;
    }
    .privacy-note{
      display:flex;
      gap:10px;
      align-items:flex-start;
      padding:13px;
      border-radius:18px;
      background:rgba(16,185,129,.08);
      color:#047857;
      font-size:13px;
      font-weight:700;
    }
    .form-message{
      display:none;
      border-radius:16px;
      padding:12px 14px;
      background:rgba(124,58,237,.08);
      color:var(--primary);
      font-weight:900;
    }
    .form-message.show{display:block}
    .site-footer{
      padding:54px 0 28px;
      background:#080d1b;
      color:#dbe4f0;
      margin-top:34px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:28px;
      align-items:start;
      padding-bottom:28px;
      border-bottom:1px solid rgba(255,255,255,.1);
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      font-weight:950;
      font-size:18px;
      letter-spacing:-.03em;
    }
    .footer-text{
      margin:16px 0 0;
      color:#94a3b8;
      max-width:720px;
      font-size:14px;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      justify-content:flex-end;
      gap:10px;
    }
    .footer-links a{
      padding:10px 13px;
      border-radius:999px;
      color:#cbd5e1;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.08);
      font-weight:800;
      font-size:14px;
    }
    .footer-links a:hover{color:#fff;background:rgba(255,255,255,.12);transform:translateY(-2px)}
    .copyright{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
      padding-top:24px;
      color:#94a3b8;
      font-size:13px;
    }
    .mobile-tab{
      display:none;
      position:fixed;
      z-index:60;
      left:14px;
      right:14px;
      bottom:14px;
      border-radius:24px;
      padding:8px;
      background:rgba(255,255,255,.9);
      backdrop-filter:blur(18px);
      border:1px solid rgba(230,233,242,.96);
      box-shadow:0 18px 50px rgba(15,23,42,.18);
    }
    .mobile-tab a{
      display:flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      width:100%;
      min-height:50px;
      border-radius:18px;
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      font-weight:950;
      box-shadow:0 12px 28px rgba(124,58,237,.22);
    }
    @media (max-width:1024px){
      .container{width:min(100% - 32px,var(--container))}
      .hero-grid,.qa-wrap,.news-layout,.changelog,.app-grid{grid-template-columns:1fr}
      .hero-copy{min-height:auto}
      .compare-panel{grid-template-columns:repeat(3,1fr)}
      .plan-card.recommend{order:0;transform:none}
      .cards-grid{grid-template-columns:repeat(2,1fr)}
      .security-grid,.calendar-strip{grid-template-columns:repeat(2,1fr)}
      .answer-panel{position:relative;top:auto}
    }
    @media (max-width:768px){
      body{padding-bottom:78px}
      .desktop-nav,.header-action .age-pill{display:none}
      .nav-wrap{min-height:66px}
      .brand-text{max-width:calc(100vw - 120px);font-size:16px}
      .hero{padding:28px 0 54px}
      .hero-stage{padding:24px;border-radius:28px}
      h1{font-size:clamp(38px,12vw,56px)}
      .hero-intro{font-size:16px}
      .hero-actions .btn{width:100%}
      .kpi-grid,.compare-panel,.cards-grid,.security-grid,.calendar-strip,.answer-metrics{grid-template-columns:1fr}
      .section-pad{padding:58px 0}
      .section-head{display:block}
      .dynamic-card{grid-template-columns:1fr;align-items:start}
      .news-item{grid-template-columns:1fr;gap:8px}
      .form-row{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .footer-links{justify-content:flex-start}
      .mobile-tab{display:block}
    }
    @media (max-width:520px){
      .container{width:min(100% - 24px,var(--container))}
      .hero-stage,.security,.app-card{border-radius:24px;padding:20px}
      .section-title{font-size:30px}
      .card,.version-card,.recommend-box{padding:20px;border-radius:24px}
      .btn{min-height:46px;padding:0 18px}
      .copyright{display:block}
      .copyright span{display:block;margin-top:8px}
    }