:root{
      --bg0:#05070f;
      --bg1:#070b18;

      --card:#0e1726;
      --card2:#121e31;
      --line:#1b2a44;

      --text:rgba(255,255,255,.92);
      --muted:rgba(255,255,255,.68);
      --muted2:rgba(255,255,255,.52);

      --accent:#76d7ff;
      --accent2:#b6ffcb;
      --accent3:#f6d37a;

      --shadow: 0 18px 60px rgba(0,0,0,.55);
      --radius: 22px;

      --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono","Courier New", monospace;
      --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", Arial, sans-serif;
      --serif: "Noto Serif TC","Songti TC","STSong","PMingLiU",serif;

      scroll-padding-top: 86px;
    }

    *{ box-sizing:border-box; }
    html,body{ height:100%; }
    body{
      margin:0;
      font-family: var(--sans);
      color: var(--text);
      background:
        radial-gradient(1100px 700px at 18% 12%, rgba(118,215,255,.14), transparent 60%),
        radial-gradient(900px 650px at 85% 22%, rgba(182,255,203,.10), transparent 55%),
        radial-gradient(900px 650px at 55% 95%, rgba(246,211,122,.08), transparent 55%),
        linear-gradient(180deg, var(--bg0), var(--bg1) 55%, #040611);
      overflow-x:hidden;
    }

    a{ color: inherit; text-decoration: none; }
    a:hover{ text-decoration: underline; }
    .container{
      width:min(1080px, calc(100% - 40px));
      margin: 0 auto;
    }

    header{
      position: sticky;
      top: 0;
      z-index: 50;
      background: #0b1220;
      border-bottom: 1px solid #182238;
    }
    .nav{
      display:flex;
      align-items:center;
      justify-content:space-between;
      padding: 12px 0;
      gap: 16px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap: 12px;
      min-width: 220px;
    }
    .logo{
      width: 38px;
      height: 38px;
      border-radius: 14px;
      background:
        radial-gradient(18px 18px at 30% 30%, rgba(118,215,255,.85), transparent 60%),
        radial-gradient(18px 18px at 70% 70%, rgba(182,255,203,.78), transparent 60%),
        linear-gradient(135deg, #12233a, #0b1220);
      border: 1px solid #22314a;
      box-shadow: 0 10px 28px rgba(0,0,0,.35);
      position: relative;
      overflow:hidden;
    }
    .logo:after{
      content:"";
      position:absolute;
      inset:-20%;
      background: conic-gradient(from 180deg, transparent, rgba(118,215,255,.18), transparent, rgba(182,255,203,.16), transparent);
      animation: spin 10s linear infinite;
      opacity:.9;
    }
    @keyframes spin{ to{ transform: rotate(360deg);} }

    .brand-title{
      display:flex;
      flex-direction:column;
      line-height:1.1;
    }
    .brand-title strong{
      font-weight: 720;
      letter-spacing: .2px;
    }
    .brand-title span{
      color: var(--muted);
      font-size: 12.5px;
      font-family: var(--mono);
    }

    .nav-links{
      display:flex;
      gap: 14px;
      flex-wrap: wrap;
      justify-content:flex-end;
      font-size: 13.5px;
      color: var(--muted);
    }
    .nav-links a{
      padding: 8px 10px;
      border-radius: 12px;
      border: 1px solid transparent;
    }
    .nav-links a:hover{
      border-color: var(--line);
      background: #0f1a2c;
      text-decoration:none;
    }

    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap: 8px;
      padding: 10px 14px;
      border-radius: 14px;
      border: 1px solid var(--line);
      background: #13233a;
      color: var(--text);
      font-weight: 650;
      font-size: 13.5px;
      cursor:pointer;
      user-select:none;
      text-decoration:none;
      white-space: nowrap;
      transition: transform .15s ease, filter .15s ease, border-color .15s ease;
    }
    .btn:hover{
      transform: translateY(-1px);
      filter: brightness(1.08);
      border-color: #2a3b5a;
      text-decoration:none;
    }
    .btn.primary{
      border-color: #2b6aa0;
      background: #17324f;
    }

    section{ padding: 18px 0; }

    .card{
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
    }
    .card.pad{ padding: 18px; }

    .section-title{
      display:flex;
      flex-direction:column;
      gap: 10px;
      margin-bottom: 22px;
    }
    .section-title h2{
      margin:0;
      font-size: 28px;
      letter-spacing: .2px;
    }
    .section-title p{
      margin:0;
      color: var(--muted);
      max-width: 72ch;
      line-height: 1.7;
    }

    .grid2{
      display:grid;
      grid-template-columns: 1.2fr .8fr;
      gap: 18px;
      align-items: stretch;
    }
    .grid3{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .grid4{ display:grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }

    .hero{ padding: 12px 0 14px; }
    .frame{
      display:grid;
      grid-template-columns: 1.12fr .88fr;
      gap: 18px;
      align-items: stretch;
    }
    .badge{
      display:inline-flex;
      font-family: var(--mono);
      font-size: 11.5px;
      padding: 6px 10px;
      border-radius: 999px;
      border: 1px solid var(--line);
      background: #0f1a2c;
      color: rgba(255,255,255,.86);
      white-space: nowrap;
    }
    .hero h1{
      margin: 8px 0 12px;
      font-size: 46px;
      line-height: 1.06;
      letter-spacing: .2px;
    }
    .hero .lead{
      margin: 0 0 18px;
      color: rgba(255,255,255,.78);
      line-height: 1.75;
      font-size: 15.5px;
      max-width: 70ch;
    }
    .hero .poem{
      margin-top: 18px;
      padding-top: 12px;
      color: rgba(255,255,255,.65);
      font-family: var(--serif);
      line-height: 1.9;
      font-size: 14.5px;
    }
    .hero .poem em{
      font-style: normal;
      color: rgba(118,215,255,.86);
    }

    .kpi{
      display:flex;
      gap: 10px;
      flex-wrap: wrap;
      margin-top: 18px;
    }
    .kpi .pill{
      display:flex;
      align-items:center;
      gap: 10px;
      padding: 10px 12px;
      border-radius: 16px;
      border: 1px solid var(--line);
      background: #0f1a2c;
      color: rgba(255,255,255,.86);
      font-size: 13px;
    }
    .kpi .dot{
      width: 8px;
      height: 8px;
      border-radius: 99px;
      background: rgba(118,215,255,.9);
      box-shadow: 0 0 0 6px rgba(118,215,255,.14);
    }
    .kpi .dot.g{ background: rgba(182,255,203,.9); box-shadow: 0 0 0 6px rgba(182,255,203,.14); }
    .kpi .dot.y{ background: rgba(246,211,122,.95); box-shadow: 0 0 0 6px rgba(246,211,122,.14); }

    .mock{
      height: 100%;
      min-height: 380px;
      border-radius: var(--radius);
      border: 1px solid var(--line);
      background: #0c1626;
      box-shadow: var(--shadow);
      padding: 16px;
    }

    /* ===== YouTube Shorts embed (new) ===== */
    .video-wrap{
      position: relative;
      width: 100%;
      height: 100%;
      min-height: 380px;
      border-radius: var(--radius);
      overflow:hidden;
      border: 1px solid var(--line);
      background: #0b1220;
      box-shadow: var(--shadow);
    }
    .video-wrap iframe{
      position:absolute;
      inset:0;
      width:100%;
      height:100%;
      border:0;
    }

    .feature{
      padding: 18px;
      border-radius: 20px;
      border: 1px solid var(--line);
      background: var(--card2);
      box-shadow: 0 12px 36px rgba(0,0,0,.22);
    }
    .feature h3{
      margin: 4px 0 8px;
      font-size: 16px;
      letter-spacing: .2px;
    }
    .feature p{
      margin: 0;
      color: var(--muted);
      line-height: 1.75;
      font-size: 13.5px;
    }
    .feature .tag{
      display:inline-flex;
      gap: 8px;
      align-items:center;
      font-family: var(--mono);
      font-size: 11.5px;
      color: rgba(255,255,255,.74);
      margin-bottom: 10px;
    }
    .feature .tag .k{
      padding: 4px 8px;
      border-radius: 999px;
      border: 1px solid var(--line);
      background: #0b1220;
    }

    .flow{
      display:grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 12px;
    }
    .step{
      padding: 18px;
      border-radius: 20px;
      border: 1px solid var(--line);
      background: var(--card2);
    }
    .step .n{
      font-family: var(--mono);
      font-size: 12.5px;
      color: rgba(255,255,255,.70);
    }
    .step h3{
      margin: 8px 0 6px;
      font-size: 15.5px;
    }
    .step p{
      margin: 0;
      color: var(--muted);
      line-height: 1.7;
      font-size: 13.5px;
    }

    /* Pricing */
    .pricing{
      display:grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 14px;
      align-items: stretch;
    }
    .price-card{
      padding: 22px;
      border-radius: var(--radius);
      border: 1px solid #2b6aa0;
      background: #0e1b2d;
      box-shadow: var(--shadow);
    }
    .price{
      display:flex;
      align-items:baseline;
      gap: 10px;
      margin: 14px 0 10px;
    }
    .price .num{
      font-size: 44px;
      font-weight: 800;
      letter-spacing: .2px;
    }
    .price .unit{
      color: var(--muted);
      font-family: var(--mono);
      font-size: 14px;
    }
    .list{
      margin: 12px 0 0;
      padding: 0 0 0 18px;
      color: rgba(255,255,255,.80);
      line-height: 1.8;
      font-size: 13.5px;
    }
    .hint{
      margin-top: 14px;
      padding: 12px 14px;
      border-radius: 18px;
      border: 1px solid #2a3b5a;
      color: rgba(255,255,255,.68);
      font-size: 12.5px;
      line-height: 1.8;
      background: #0b1220;
    }

    .split{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
    }
    .split .box{
      padding: 18px;
      border-radius: 20px;
      border: 1px solid var(--line);
      background: var(--card2);
    }
    .split .box h3{
      margin: 0 0 8px;
      font-size: 15.5px;
    }
    .split .box ul{
      margin: 0;
      padding-left: 18px;
      color: rgba(255,255,255,.78);
      line-height: 1.8;
      font-size: 13.5px;
    }

    footer{
      margin-top: 24px;
      border-top: 1px solid var(--line);
      background: #070b18;
    }
    .foot{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap: 12px;
      padding: 16px 0;
      color: rgba(255,255,255,.64);
      font-size: 12.5px;
      line-height: 1.6;
    }
    .foot .left{
      display:flex;
      gap: 10px;
      flex-wrap: wrap;
      align-items:center;
    }
    .foot .sep{ opacity:.45; }
    .foot a{
      color: rgba(255,255,255,.76);
      border-bottom: 1px solid transparent;
    }
    .foot a:hover{
      border-bottom-color: rgba(255,255,255,.26);
      text-decoration:none;
    }

    @media (max-width: 980px){
      .frame,.grid2,.pricing{ grid-template-columns: 1fr; }
      .grid4{ grid-template-columns: 1fr 1fr; }
      .flow{ grid-template-columns: 1fr 1fr; }
      .nav-links{ display:none; }
      .hero h1{ font-size: 38px; }
      .foot{ flex-direction:column; align-items:flex-start; }
    }
    @media (max-width: 560px){
      .grid3{ grid-template-columns: 1fr; }
      .grid4{ grid-template-columns: 1fr; }
      .flow{ grid-template-columns: 1fr; }
      .hero h1{ font-size: 34px; }
    }

    .lang-select select{
    background:#0f1a2c;
    color:rgba(255,255,255,.88);
    border:1px solid #1b2a44;
    border-radius:12px;
    padding:8px 10px;
    font-size:13px;
    cursor:pointer;
    }