/* roulang page: index */
:root{
      --bg:#f6f7fb;
      --bg-soft:#eef2ff;
      --panel:#ffffff;
      --panel-dark:#10162f;
      --text:#182033;
      --muted:#667085;
      --weak:#8a94a6;
      --primary:#6554ff;
      --primary-2:#7c3aed;
      --primary-dark:#4634d7;
      --accent:#12b8a6;
      --accent-2:#21d4fd;
      --warning:#ffb020;
      --danger:#ef476f;
      --success:#28c76f;
      --border:#e3e7ef;
      --border-strong:#cbd3e3;
      --shadow-sm:0 8px 24px rgba(24,32,51,.08);
      --shadow-md:0 18px 48px rgba(24,32,51,.12);
      --shadow-lg:0 30px 80px rgba(16,22,47,.18);
      --radius-xs:10px;
      --radius-sm:14px;
      --radius-md:22px;
      --radius-lg:32px;
      --radius-xl:42px;
      --container:1180px;
      --section:92px;
      --ease:all .24s ease;
    }

    *{
      box-sizing:border-box;
    }

    html{
      scroll-behavior:smooth;
      -webkit-text-size-adjust:100%;
    }

    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 8%, rgba(101,84,255,.14), transparent 32%),
        radial-gradient(circle at 88% 18%, rgba(18,184,166,.13), transparent 28%),
        linear-gradient(180deg,#fbfcff 0%,var(--bg) 44%,#ffffff 100%);
      line-height:1.78;
      letter-spacing:.01em;
      overflow-x:hidden;
    }

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

    a:hover,
    a:focus{
      color:var(--primary);
      outline:none;
    }

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

    button,
    input{
      font:inherit;
    }

    button{
      cursor:pointer;
    }

    input{
      border:0;
      outline:0;
      background:transparent;
    }

    ::selection{
      color:#fff;
      background:var(--primary);
    }

    .container{
      width:min(var(--container), calc(100% - 40px));
      margin:0 auto;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:1000;
      backdrop-filter:saturate(160%) blur(18px);
      background:rgba(255,255,255,.84);
      border-bottom:1px solid rgba(227,231,239,.78);
      box-shadow:0 10px 34px rgba(16,22,47,.05);
    }

    .nav-wrap{
      min-height:76px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:22px;
    }

    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
      flex-shrink:0;
      color:var(--text);
    }

    .brand-mark{
      width:42px;
      height:42px;
      border-radius:15px;
      display:grid;
      place-items:center;
      color:#fff;
      font-weight:900;
      letter-spacing:-.04em;
      background:
        linear-gradient(145deg, rgba(255,255,255,.28), transparent 38%),
        linear-gradient(135deg,var(--primary),var(--accent));
      box-shadow:0 12px 28px rgba(101,84,255,.28);
    }

    .brand-name{
      font-weight:900;
      font-size:17px;
      line-height:1.25;
      max-width:310px;
      white-space:normal;
    }

    .nav-toggle{
      display:none;
    }

    .nav-toggle-label{
      display:none;
      width:44px;
      height:44px;
      border-radius:14px;
      border:1px solid var(--border);
      background:#fff;
      align-items:center;
      justify-content:center;
      box-shadow:var(--shadow-sm);
    }

    .nav-toggle-label span,
    .nav-toggle-label span::before,
    .nav-toggle-label span::after{
      width:20px;
      height:2px;
      display:block;
      position:relative;
      content:"";
      border-radius:999px;
      background:var(--text);
      transition:var(--ease);
    }

    .nav-toggle-label span::before{
      position:absolute;
      top:-7px;
    }

    .nav-toggle-label span::after{
      position:absolute;
      top:7px;
    }

    .nav-panel{
      display:flex;
      align-items:center;
      justify-content:flex-end;
      gap:18px;
      flex:1;
      min-width:0;
    }

    .main-nav{
      display:flex;
      align-items:center;
      gap:8px;
      list-style:none;
      padding:0;
      margin:0;
    }

    .nav-item{
      position:relative;
    }

    .nav-link{
      display:flex;
      align-items:center;
      gap:7px;
      padding:11px 14px;
      border-radius:999px;
      color:#394154;
      font-size:15px;
      font-weight:800;
    }

    .nav-link:hover,
    .nav-link:focus{
      background:var(--bg-soft);
      color:var(--primary-dark);
    }

    .nav-link.active{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      box-shadow:0 12px 28px rgba(101,84,255,.24);
    }

    .dropdown-panel{
      position:absolute;
      top:calc(100% + 14px);
      left:0;
      width:320px;
      padding:16px;
      border:1px solid var(--border);
      border-radius:22px;
      background:rgba(255,255,255,.96);
      box-shadow:var(--shadow-lg);
      opacity:0;
      visibility:hidden;
      transform:translateY(8px);
      transition:var(--ease);
    }

    .nav-item:hover .dropdown-panel,
    .nav-item:focus-within .dropdown-panel{
      opacity:1;
      visibility:visible;
      transform:translateY(0);
    }

    .dropdown-title{
      margin:0 0 10px;
      color:var(--text);
      font-size:14px;
      font-weight:900;
    }

    .dropdown-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:8px;
    }

    .dropdown-chip{
      padding:10px 11px;
      border-radius:14px;
      background:#f7f8fc;
      border:1px solid transparent;
      color:#586174;
      font-size:13px;
      font-weight:800;
    }

    .dropdown-chip:hover{
      border-color:rgba(101,84,255,.28);
      color:var(--primary);
      background:#fff;
      transform:translateY(-1px);
    }

    .nav-search{
      width:230px;
      max-width:28vw;
      display:flex;
      align-items:center;
      gap:8px;
      padding:10px 13px;
      border:1px solid var(--border);
      border-radius:999px;
      background:#fff;
      color:var(--weak);
      transition:var(--ease);
    }

    .nav-search:focus-within{
      border-color:rgba(101,84,255,.42);
      box-shadow:0 0 0 4px rgba(101,84,255,.1);
    }

    .nav-search input{
      width:100%;
      min-width:0;
      color:var(--text);
      font-size:14px;
    }

    .header-cta{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      padding:11px 17px;
      border-radius:999px;
      color:#fff;
      background:var(--panel-dark);
      font-weight:900;
      box-shadow:0 12px 30px rgba(16,22,47,.18);
      white-space:nowrap;
    }

    .header-cta:hover,
    .header-cta:focus{
      color:#fff;
      background:var(--primary-dark);
      transform:translateY(-1px);
    }

    main{
      overflow:hidden;
    }

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

    .section-tight{
      padding:70px 0;
    }

    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:30px;
      margin-bottom:34px;
    }

    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border:1px solid rgba(101,84,255,.18);
      border-radius:999px;
      color:var(--primary-dark);
      background:rgba(101,84,255,.08);
      font-weight:900;
      font-size:13px;
      margin-bottom:14px;
    }

    .section-title{
      margin:0;
      color:var(--text);
      font-size:clamp(28px,3vw,44px);
      line-height:1.22;
      font-weight:950;
      letter-spacing:-.04em;
    }

    .section-desc{
      margin:14px 0 0;
      color:var(--muted);
      max-width:680px;
      font-size:16px;
      line-height:1.9;
    }

    .muted-link{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--primary-dark);
      font-weight:900;
      white-space:nowrap;
    }

    .muted-link:hover{
      gap:12px;
    }

    .btn-row{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      align-items:center;
    }

    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      min-height:48px;
      padding:13px 20px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:950;
      line-height:1.2;
      transition:var(--ease);
      box-shadow:none;
    }

    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      box-shadow:0 16px 34px rgba(101,84,255,.27);
    }

    .btn-primary:hover,
    .btn-primary:focus{
      color:#fff;
      transform:translateY(-2px);
      box-shadow:0 22px 42px rgba(101,84,255,.34);
    }

    .btn-secondary{
      color:var(--text);
      background:#fff;
      border-color:var(--border);
      box-shadow:var(--shadow-sm);
    }

    .btn-secondary:hover,
    .btn-secondary:focus{
      color:var(--primary-dark);
      border-color:rgba(101,84,255,.36);
      transform:translateY(-2px);
      box-shadow:var(--shadow-md);
    }

    .btn-dark{
      color:#fff;
      background:var(--panel-dark);
      box-shadow:0 18px 38px rgba(16,22,47,.18);
    }

    .btn-dark:hover,
    .btn-dark:focus{
      color:#fff;
      background:#1b2450;
      transform:translateY(-2px);
    }

    .badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      width:max-content;
      padding:7px 10px;
      border-radius:999px;
      color:#4b5567;
      background:#f2f4fa;
      border:1px solid #e6eaf2;
      font-size:12px;
      font-weight:900;
      line-height:1;
    }

    .badge.success{
      color:#047857;
      background:#e9fbf2;
      border-color:#c8f4dd;
    }

    .badge.warn{
      color:#9a5a00;
      background:#fff6df;
      border-color:#ffe2a8;
    }

    .badge.dark{
      color:#fff;
      background:rgba(255,255,255,.14);
      border-color:rgba(255,255,255,.2);
    }

    .card{
      position:relative;
      border:1px solid var(--border);
      border-radius:var(--radius-md);
      background:rgba(255,255,255,.86);
      box-shadow:var(--shadow-sm);
      transition:var(--ease);
      overflow:hidden;
    }

    .card:hover{
      transform:translateY(-4px);
      box-shadow:var(--shadow-md);
      border-color:rgba(101,84,255,.24);
    }

    .hero{
      padding:74px 0 96px;
    }

    .hero-shell{
      border-radius:var(--radius-xl);
      border:1px solid rgba(227,231,239,.92);
      background:
        linear-gradient(180deg,rgba(255,255,255,.95),rgba(255,255,255,.8)),
        radial-gradient(circle at 50% 0%,rgba(101,84,255,.18),transparent 42%);
      box-shadow:var(--shadow-lg);
      padding:34px;
      overflow:hidden;
      position:relative;
    }

    .hero-shell::before{
      content:"";
      position:absolute;
      inset:-1px;
      pointer-events:none;
      background:
        linear-gradient(90deg,rgba(101,84,255,.08) 1px,transparent 1px),
        linear-gradient(0deg,rgba(101,84,255,.07) 1px,transparent 1px);
      background-size:46px 46px;
      mask-image:linear-gradient(180deg,rgba(0,0,0,.6),transparent 70%);
    }

    .hero-layout{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:minmax(220px,.86fr) minmax(360px,1.25fr) minmax(240px,.82fr);
      gap:24px;
      align-items:center;
    }

    .hero-left,
    .hero-right{
      display:flex;
      flex-direction:column;
      gap:16px;
    }

    .hero-title{
      margin:0;
      font-size:clamp(34px,4.3vw,64px);
      line-height:1.08;
      letter-spacing:-.06em;
      font-weight:950;
      color:#10162f;
    }

    .hero-copy{
      margin:18px 0 0;
      color:#4b5567;
      font-size:17px;
      line-height:1.95;
    }

    .value-point{
      padding:16px;
      border-radius:20px;
      background:rgba(255,255,255,.78);
      border:1px solid var(--border);
      box-shadow:0 10px 24px rgba(24,32,51,.06);
    }

    .value-point strong{
      display:block;
      margin-bottom:5px;
      font-size:15px;
      color:var(--text);
    }

    .value-point span{
      display:block;
      color:var(--muted);
      font-size:13px;
      line-height:1.7;
    }

    .product-stage{
      position:relative;
      padding:16px;
      border-radius:34px;
      background:
        linear-gradient(145deg,rgba(255,255,255,.92),rgba(240,243,255,.75));
      border:1px solid rgba(203,211,227,.82);
      box-shadow:0 26px 70px rgba(50,59,105,.18);
    }

    .product-stage::before,
    .product-stage::after{
      content:"";
      position:absolute;
      border-radius:999px;
      filter:blur(4px);
    }

    .product-stage::before{
      width:68px;
      height:68px;
      right:-20px;
      top:48px;
      background:rgba(18,184,166,.2);
    }

    .product-stage::after{
      width:92px;
      height:92px;
      left:-28px;
      bottom:38px;
      background:rgba(101,84,255,.17);
    }

    .screenshot{
      position:relative;
      z-index:1;
      min-height:440px;
      border-radius:26px;
      background:#0f1531;
      overflow:hidden;
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.08);
      color:#fff;
    }

    .screen-topbar{
      height:48px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      padding:0 18px;
      background:rgba(255,255,255,.06);
      border-bottom:1px solid rgba(255,255,255,.08);
    }

    .dot-group{
      display:flex;
      gap:7px;
    }

    .dot{
      width:10px;
      height:10px;
      border-radius:50%;
      background:#ff5f57;
    }

    .dot:nth-child(2){
      background:#ffbd2e;
    }

    .dot:nth-child(3){
      background:#28c840;
    }

    .screen-pill{
      padding:5px 10px;
      border-radius:999px;
      background:rgba(255,255,255,.1);
      color:#cfd6ff;
      font-size:12px;
      font-weight:900;
    }

    .screen-body{
      padding:22px;
    }

    .status-line{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      margin-bottom:18px;
    }

    .status-title{
      font-weight:950;
      font-size:22px;
      line-height:1.25;
    }

    .status-ring{
      width:74px;
      height:74px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:
        conic-gradient(var(--accent) 0 82%, rgba(255,255,255,.12) 82% 100%);
      position:relative;
      flex:0 0 auto;
    }

    .status-ring::before{
      content:"";
      position:absolute;
      inset:8px;
      border-radius:50%;
      background:#0f1531;
    }

    .status-ring span{
      position:relative;
      font-weight:950;
      color:#fff;
      font-size:15px;
    }

    .check-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:12px;
      margin:20px 0;
    }

    .check-item{
      padding:14px;
      border-radius:18px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.09);
    }

    .check-item b{
      display:block;
      margin-bottom:5px;
      color:#fff;
      font-size:14px;
    }

    .check-item small{
      color:#aeb8df;
      line-height:1.55;
      display:block;
    }

    .timeline-mini{
      display:flex;
      flex-direction:column;
      gap:10px;
      margin-top:18px;
    }

    .mini-row{
      display:grid;
      grid-template-columns:74px 1fr auto;
      gap:10px;
      align-items:center;
      padding:11px 12px;
      border-radius:16px;
      background:rgba(255,255,255,.065);
      border:1px solid rgba(255,255,255,.075);
      color:#dbe2ff;
      font-size:13px;
      font-weight:800;
    }

    .mini-row em{
      font-style:normal;
      color:#93f1e7;
      font-weight:950;
    }

    .hero-action-card{
      padding:20px;
      border-radius:24px;
      background:#fff;
      border:1px solid var(--border);
      box-shadow:var(--shadow-md);
    }

    .hero-action-card h2{
      margin:0 0 8px;
      font-size:19px;
      font-weight:950;
      letter-spacing:-.03em;
    }

    .hero-action-card p{
      margin:0 0 18px;
      color:var(--muted);
      font-size:14px;
      line-height:1.75;
    }

    .hero-data{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:12px;
      margin-top:4px;
    }

    .data-box{
      padding:14px;
      border-radius:18px;
      background:#f7f8fc;
      border:1px solid var(--border);
    }

    .data-box b{
      display:block;
      font-size:24px;
      line-height:1;
      color:var(--primary-dark);
      letter-spacing:-.04em;
    }

    .data-box span{
      display:block;
      margin-top:7px;
      color:var(--muted);
      font-size:12px;
      line-height:1.45;
      font-weight:800;
    }

    .latest-section{
      background:linear-gradient(180deg,rgba(255,255,255,.2),rgba(238,242,255,.42));
    }

    .dynamic-board{
      display:grid;
      grid-template-columns:1.15fr .85fr;
      gap:24px;
      align-items:stretch;
    }

    .update-card{
      padding:28px;
      min-height:100%;
      background:
        linear-gradient(135deg,rgba(101,84,255,.09),rgba(18,184,166,.08)),
        #fff;
    }

    .update-card h3{
      margin:16px 0 12px;
      font-size:26px;
      line-height:1.28;
      font-weight:950;
      letter-spacing:-.04em;
    }

    .update-card p{
      margin:0;
      color:var(--muted);
    }

    .update-list{
      display:flex;
      flex-direction:column;
      gap:12px;
    }

    .update-row{
      display:flex;
      gap:14px;
      align-items:flex-start;
      padding:17px;
      border-radius:20px;
      border:1px solid var(--border);
      background:#fff;
      transition:var(--ease);
      box-shadow:0 10px 22px rgba(24,32,51,.05);
    }

    .update-row:hover{
      transform:translateX(4px);
      border-color:rgba(101,84,255,.28);
      box-shadow:var(--shadow-sm);
    }

    .update-date{
      flex:0 0 64px;
      text-align:center;
      padding:8px 6px;
      border-radius:15px;
      color:#fff;
      background:linear-gradient(135deg,var(--panel-dark),#28336a);
      font-weight:950;
      line-height:1.15;
      font-size:13px;
    }

    .update-row h4{
      margin:0 0 5px;
      font-size:16px;
      font-weight:950;
      line-height:1.45;
    }

    .update-row p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.65;
    }

    .answer-layout{
      display:grid;
      grid-template-columns:.9fr 1.1fr;
      gap:30px;
      align-items:start;
    }

    .steps-card{
      padding:30px;
      background:var(--panel-dark);
      color:#fff;
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow-lg);
      overflow:hidden;
      position:relative;
    }

    .steps-card::after{
      content:"";
      position:absolute;
      width:220px;
      height:220px;
      border-radius:50%;
      right:-80px;
      top:-80px;
      background:rgba(33,212,253,.18);
    }

    .steps-card h3{
      position:relative;
      z-index:1;
      margin:0 0 20px;
      font-size:28px;
      font-weight:950;
      letter-spacing:-.04em;
    }

    .step-list{
      position:relative;
      z-index:1;
      display:flex;
      flex-direction:column;
      gap:16px;
      margin:0;
      padding:0;
      list-style:none;
    }

    .step-list li{
      display:grid;
      grid-template-columns:42px 1fr;
      gap:13px;
      align-items:start;
      padding-bottom:16px;
      border-bottom:1px solid rgba(255,255,255,.12);
    }

    .step-list li:last-child{
      border-bottom:0;
      padding-bottom:0;
    }

    .step-num{
      width:42px;
      height:42px;
      border-radius:15px;
      display:grid;
      place-items:center;
      color:#0f1531;
      background:#9ff4ec;
      font-weight:950;
    }

    .step-list strong{
      display:block;
      color:#fff;
      margin-bottom:5px;
      font-size:16px;
    }

    .step-list span{
      display:block;
      color:#c5ccec;
      font-size:14px;
      line-height:1.75;
    }

    .faq-stack{
      display:flex;
      flex-direction:column;
      gap:13px;
    }

    .faq-item{
      border:1px solid var(--border);
      border-radius:20px;
      background:#fff;
      box-shadow:0 8px 20px rgba(24,32,51,.05);
      overflow:hidden;
      transition:var(--ease);
    }

    .faq-item:hover{
      border-color:rgba(101,84,255,.26);
      box-shadow:var(--shadow-sm);
    }

    .faq-item summary{
      list-style:none;
      cursor:pointer;
      padding:19px 22px;
      font-size:16px;
      font-weight:950;
      color:var(--text);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
    }

    .faq-item summary::-webkit-details-marker{
      display:none;
    }

    .faq-item summary::after{
      content:"+";
      width:28px;
      height:28px;
      flex:0 0 auto;
      border-radius:50%;
      display:grid;
      place-items:center;
      color:#fff;
      background:var(--primary);
      font-weight:950;
      transition:var(--ease);
    }

    .faq-item[open] summary::after{
      content:"−";
      transform:rotate(180deg);
      background:var(--accent);
    }

    .faq-item p{
      margin:0;
      padding:0 22px 20px;
      color:var(--muted);
      line-height:1.85;
      font-size:15px;
    }

    .info-area{
      display:grid;
      grid-template-columns:minmax(0,1fr) 330px;
      gap:28px;
      align-items:start;
    }

    .news-list{
      display:flex;
      flex-direction:column;
      gap:12px;
    }

    .news-link{
      display:grid;
      grid-template-columns:110px 1fr auto;
      gap:18px;
      align-items:center;
      padding:17px 18px;
      border:1px solid var(--border);
      border-radius:20px;
      background:#fff;
      box-shadow:0 8px 20px rgba(24,32,51,.05);
      transition:var(--ease);
    }

    .news-link:hover{
      transform:translateY(-2px);
      box-shadow:var(--shadow-sm);
      border-color:rgba(101,84,255,.28);
      color:inherit;
    }

    .news-cat{
      color:var(--primary-dark);
      font-weight:950;
      font-size:13px;
    }

    .news-title{
      min-width:0;
    }

    .news-title strong{
      display:block;
      color:var(--text);
      font-size:16px;
      line-height:1.42;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }

    .news-title span{
      display:block;
      margin-top:5px;
      color:var(--muted);
      font-size:13px;
      line-height:1.45;
    }

    .news-arrow{
      color:var(--weak);
      font-weight:950;
    }

    .recommend-card{
      position:sticky;
      top:100px;
      padding:24px;
      border-radius:var(--radius-md);
      color:#fff;
      background:
        radial-gradient(circle at 18% 20%,rgba(33,212,253,.24),transparent 34%),
        linear-gradient(145deg,#121936,#242e63);
      box-shadow:var(--shadow-lg);
    }

    .recommend-card h3{
      margin:14px 0 10px;
      font-size:24px;
      font-weight:950;
      letter-spacing:-.04em;
    }

    .recommend-card p{
      margin:0 0 18px;
      color:#cdd4f2;
      line-height:1.8;
    }

    .recommend-points{
      display:flex;
      flex-direction:column;
      gap:10px;
      margin:0;
      padding:0;
      list-style:none;
    }

    .recommend-points li{
      display:flex;
      align-items:flex-start;
      gap:9px;
      color:#eef2ff;
      font-size:14px;
      line-height:1.6;
    }

    .recommend-points li::before{
      content:"✓";
      width:20px;
      height:20px;
      flex:0 0 auto;
      border-radius:50%;
      display:grid;
      place-items:center;
      color:#102033;
      background:#9ff4ec;
      font-size:12px;
      font-weight:950;
      margin-top:2px;
    }

    .safety-section{
      background:#fff;
    }

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

    .safety-card{
      padding:24px;
    }

    .safety-icon{
      width:50px;
      height:50px;
      border-radius:18px;
      display:grid;
      place-items:center;
      margin-bottom:18px;
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      font-size:22px;
      box-shadow:0 14px 30px rgba(101,84,255,.22);
    }

    .safety-card h3{
      margin:0 0 9px;
      font-size:20px;
      font-weight:950;
      letter-spacing:-.03em;
    }

    .safety-card p{
      margin:0;
      color:var(--muted);
      font-size:15px;
      line-height:1.82;
    }

    .hot-section{
      background:linear-gradient(180deg,#fff 0%,#f7f8fc 100%);
    }

    .hot-list{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
      counter-reset:hot;
    }

    .hot-item{
      min-height:236px;
      padding:22px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }

    .hot-item::before{
      counter-increment:hot;
      content:"0" counter(hot);
      width:48px;
      height:48px;
      display:grid;
      place-items:center;
      border-radius:16px;
      color:#fff;
      background:var(--panel-dark);
      font-weight:950;
      margin-bottom:16px;
      box-shadow:0 12px 26px rgba(16,22,47,.16);
    }

    .hot-item h3{
      margin:0 0 9px;
      font-size:18px;
      line-height:1.35;
      font-weight:950;
    }

    .hot-item p{
      margin:0 0 18px;
      color:var(--muted);
      font-size:14px;
      line-height:1.72;
    }

    .hot-action{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--primary-dark);
      font-weight:950;
      font-size:14px;
    }

    .hot-action:hover{
      gap:12px;
    }

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

    .topic-card{
      padding:26px;
      display:grid;
      grid-template-columns:58px 1fr;
      gap:18px;
      align-items:start;
    }

    .topic-symbol{
      width:58px;
      height:58px;
      border-radius:20px;
      display:grid;
      place-items:center;
      font-size:25px;
      background:#f0f3ff;
      color:var(--primary-dark);
      border:1px solid rgba(101,84,255,.18);
    }

    .topic-card h3{
      margin:0 0 8px;
      font-size:20px;
      font-weight:950;
    }

    .topic-card p{
      margin:0;
      color:var(--muted);
      font-size:15px;
      line-height:1.78;
    }

    .app-section{
      padding-bottom:110px;
    }

    .app-shell{
      border-radius:var(--radius-xl);
      color:#fff;
      background:
        radial-gradient(circle at 20% 15%,rgba(33,212,253,.24),transparent 32%),
        radial-gradient(circle at 78% 30%,rgba(124,58,237,.32),transparent 34%),
        linear-gradient(145deg,#10162f,#1a2452);
      box-shadow:var(--shadow-lg);
      overflow:hidden;
      position:relative;
      padding:42px;
    }

    .app-shell::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(90deg,rgba(255,255,255,.08) 1px,transparent 1px),
        linear-gradient(0deg,rgba(255,255,255,.06) 1px,transparent 1px);
      background-size:54px 54px;
      mask-image:linear-gradient(120deg,rgba(0,0,0,.65),transparent 72%);
      pointer-events:none;
    }

    .app-layout{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1fr 420px;
      gap:34px;
      align-items:center;
    }

    .app-copy h2{
      margin:0;
      font-size:clamp(30px,3.5vw,50px);
      line-height:1.16;
      font-weight:950;
      letter-spacing:-.05em;
    }

    .app-copy p{
      margin:18px 0 24px;
      color:#d8def8;
      max-width:690px;
      line-height:1.9;
      font-size:16px;
    }

    .app-tags{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-bottom:24px;
    }

    .app-panel{
      padding:24px;
      border-radius:28px;
      background:rgba(255,255,255,.1);
      border:1px solid rgba(255,255,255,.16);
      backdrop-filter:blur(14px);
    }

    .app-panel h3{
      margin:0 0 8px;
      font-size:21px;
      font-weight:950;
    }

    .app-panel p{
      margin:0 0 18px;
      color:#cfd6ff;
      font-size:14px;
      line-height:1.75;
    }

    .notify-form{
      display:flex;
      gap:10px;
      padding:8px;
      border-radius:999px;
      background:#fff;
      box-shadow:0 18px 42px rgba(0,0,0,.18);
    }

    .notify-form input{
      flex:1;
      min-width:0;
      padding:0 12px;
      color:var(--text);
      font-size:14px;
    }

    .notify-form button{
      border:0;
      padding:12px 17px;
      border-radius:999px;
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      font-weight:950;
      transition:var(--ease);
      white-space:nowrap;
    }

    .notify-form button:hover,
    .notify-form button:focus{
      transform:translateY(-1px);
      box-shadow:0 12px 24px rgba(101,84,255,.28);
    }

    .form-note{
      display:block;
      margin-top:12px;
      color:#aeb8df;
      font-size:12px;
      line-height:1.6;
    }

    .site-footer{
      background:#0c1229;
      color:#cbd3e3;
      padding:54px 0 28px;
    }

    .footer-top{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:34px;
      align-items:start;
      padding-bottom:34px;
      border-bottom:1px solid rgba(255,255,255,.1);
    }

    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      color:#fff;
      margin-bottom:16px;
    }

    .footer-brand .brand-mark{
      box-shadow:none;
    }

    .footer-brand strong{
      font-size:18px;
      font-weight:950;
      line-height:1.3;
    }

    .footer-desc{
      max-width:680px;
      margin:0;
      color:#aeb8c9;
      line-height:1.9;
    }

    .footer-links{
      display:flex;
      flex-wrap:wrap;
      justify-content:flex-end;
      gap:12px;
    }

    .footer-links a{
      padding:9px 12px;
      border-radius:999px;
      color:#d7deee;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.08);
      font-weight:800;
      font-size:14px;
    }

    .footer-links a:hover,
    .footer-links a:focus{
      color:#fff;
      background:rgba(101,84,255,.35);
      border-color:rgba(255,255,255,.2);
      transform:translateY(-1px);
    }

    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:20px;
      padding-top:24px;
      color:#8791a8;
      font-size:13px;
      line-height:1.7;
    }

    .footer-bottom a{
      color:#b9c3d8;
      font-weight:800;
    }

    .footer-bottom a:hover{
      color:#fff;
    }

    .focus-ring:focus,
    .btn:focus,
    .news-link:focus,
    .hot-action:focus,
    .muted-link:focus{
      outline:3px solid rgba(101,84,255,.25);
      outline-offset:3px;
    }

    @media screen and (max-width:1024px){
      :root{
        --section:78px;
      }

      .brand-name{
        max-width:250px;
      }

      .nav-search{
        display:none;
      }

      .hero-layout{
        grid-template-columns:1fr;
      }

      .hero-left{
        display:grid;
        grid-template-columns:1fr 1fr;
      }

      .hero-copy{
        max-width:760px;
      }

      .screenshot{
        min-height:390px;
      }

      .dynamic-board,
      .answer-layout,
      .info-area,
      .app-layout{
        grid-template-columns:1fr;
      }

      .recommend-card{
        position:relative;
        top:auto;
      }

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

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

    @media screen and (max-width:768px){
      .container{
        width:min(100% - 28px,var(--container));
      }

      .nav-wrap{
        min-height:68px;
      }

      .brand-name{
        font-size:15px;
        max-width:210px;
      }

      .nav-toggle-label{
        display:flex;
      }

      .nav-panel{
        position:absolute;
        left:14px;
        right:14px;
        top:76px;
        display:none;
        flex-direction:column;
        align-items:stretch;
        gap:14px;
        padding:16px;
        border-radius:24px;
        background:rgba(255,255,255,.96);
        border:1px solid var(--border);
        box-shadow:var(--shadow-lg);
      }

      .nav-toggle:checked ~ .nav-panel{
        display:flex;
      }

      .nav-toggle:checked + .nav-toggle-label span{
        background:transparent;
      }

      .nav-toggle:checked + .nav-toggle-label span::before{
        top:0;
        transform:rotate(45deg);
      }

      .nav-toggle:checked + .nav-toggle-label span::after{
        top:0;
        transform:rotate(-45deg);
      }

      .main-nav{
        width:100%;
        flex-direction:column;
        align-items:stretch;
      }

      .nav-link{
        justify-content:space-between;
        border-radius:16px;
      }

      .dropdown-panel{
        position:static;
        width:100%;
        margin-top:8px;
        opacity:1;
        visibility:visible;
        transform:none;
        box-shadow:none;
        background:#f8f9fd;
        display:block;
      }

      .header-cta{
        width:100%;
      }

      .hero{
        padding:38px 0 70px;
      }

      .hero-shell{
        padding:20px;
        border-radius:28px;
      }

      .hero-left{
        grid-template-columns:1fr;
      }

      .hero-title{
        font-size:38px;
      }

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

      .section-head{
        flex-direction:column;
        align-items:flex-start;
        gap:16px;
      }

      .check-grid,
      .hero-data,
      .topic-layout{
        grid-template-columns:1fr;
      }

      .screenshot{
        min-height:auto;
      }

      .mini-row{
        grid-template-columns:64px 1fr;
      }

      .mini-row em{
        grid-column:2;
      }

      .news-link{
        grid-template-columns:1fr;
        gap:8px;
      }

      .news-title strong{
        white-space:normal;
      }

      .news-arrow{
        display:none;
      }

      .safety-grid,
      .hot-list{
        grid-template-columns:1fr;
      }

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

      .app-shell{
        padding:28px;
        border-radius:30px;
      }

      .notify-form{
        flex-direction:column;
        border-radius:20px;
      }

      .notify-form input{
        min-height:44px;
      }

      .footer-top,
      .footer-bottom{
        grid-template-columns:1fr;
        flex-direction:column;
      }

      .footer-links{
        justify-content:flex-start;
      }
    }

    @media screen and (max-width:520px){
      :root{
        --section:64px;
      }

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

      .brand-name{
        max-width:170px;
        font-size:14px;
      }

      .hero-title{
        font-size:32px;
        letter-spacing:-.045em;
      }

      .btn-row{
        width:100%;
      }

      .btn{
        width:100%;
      }

      .product-stage{
        padding:10px;
        border-radius:26px;
      }

      .screenshot{
        border-radius:20px;
      }

      .screen-body{
        padding:16px;
      }

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

      .section-title{
        font-size:27px;
      }

      .update-row{
        flex-direction:column;
      }

      .update-date{
        text-align:left;
        width:max-content;
      }

      .footer-links a{
        width:100%;
        text-align:center;
      }
    }