:root{
      /* ===== Brand palette (neon cyber) ===== */
      --bg:#050816;                /* 星空底色更深 */
      --bg-2:#0b1220;              /* 次级底色 */
      --card:#0b0f23cc;            /* 玻璃卡片 */
      --muted:#9AA6C1;             /* 次级文字 */
      --brand:#00E5FF;             /* 霓虹青 */
      --brand-2:#8B5CF6;           /* 电光紫 */
      --accent-1:#FF4ECD;          /* 玫红高光 */
      --accent-2:#22d3ee;          /* 备用青 */
      --success:#10b981;
      --warn:#f59e0b;
      --radius:18px;
      --ring: rgba(139,92,246,.4);
      --ring-2: rgba(0,229,255,.35);
    }
    *{box-sizing:border-box}
    html,body{height:100%}
    body{
      margin:0; font-family:"Inter","Noto Sans SC",system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,"Helvetica Neue",Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","WenQuanYi Micro Hei",sans-serif;
      color:#E9EEFF; line-height:1.55; -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;
      background: radial-gradient(1400px 900px at 85% -10%, rgba(139,92,246,.35), transparent 60%),
                  radial-gradient(900px 600px at 0% 30%, rgba(0,229,255,.28), transparent 65%),
                  var(--bg);
    }
    a{color:inherit;text-decoration:none}
    .container{width:min(1200px,92%);margin:0 auto}

    /* ===== Aurora background layer ===== */
    .aurora{position:fixed;inset:-10%;z-index:0;pointer-events:none;filter:blur(32px) saturate(1.25)}
    .aurora::before,.aurora::after{content:"";position:absolute;inset:-20%}
    .aurora::before{background:radial-gradient(40% 60% at 20% 30%, rgba(255,78,205,.25), transparent 60%),
                                 radial-gradient(30% 50% at 80% 20%, rgba(0,229,255,.28), transparent 60%),
                                 radial-gradient(30% 40% at 60% 70%, rgba(139,92,246,.30), transparent 60%);
                    animation:floatA 22s ease-in-out infinite alternate}
    .aurora::after{background:radial-gradient(30% 50% at 30% 70%, rgba(0,229,255,.22), transparent 60%),
                                radial-gradient(30% 45% at 75% 60%, rgba(139,92,246,.26), transparent 60%);
                   animation:floatB 26s ease-in-out infinite alternate}
    @keyframes floatA{from{transform:translate3d(-2%,2%,0) rotate(-2deg)} to{transform:translate3d(2%,-2%,0) rotate(4deg)}}
    @keyframes floatB{from{transform:translate3d(2%,-2%,0) rotate(2deg)} to{transform:translate3d(-2%,2%,0) rotate(-3deg)}}

    /* ===== Header ===== */
    header{position:sticky;top:0;z-index:40;background:linear-gradient(180deg, rgba(5,8,22,.9), rgba(5,8,22,.35));backdrop-filter:saturate(1.3) blur(10px);border-bottom:1px solid rgba(146,160,184,.12)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:16px;height:72px}
    .brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:.3px}
    .brand .logo{width:30px;height:30px;display:grid;place-items:center;border-radius:10px;background:conic-gradient(from 210deg, var(--brand), var(--brand-2));box-shadow:0 8px 26px rgba(0,229,255,.35), 0 0 0 1px rgba(255,255,255,.08) inset}
    .brand span{font-size:18px}
    .nav .menu{display:flex;gap:16px;align-items:center}
    .nav a{opacity:.95}

    /* Buttons */
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 16px;border-radius:12px;font-weight:600;border:1px solid #ffffff22;background:#ffffff08;box-shadow:inset 0 0 0 1px #ffffff10;transition:.25s ease}
    .btn:hover{transform:translateY(-1px);box-shadow:0 10px 26px rgba(0,229,255,.18)}
    .btn.primary{background:linear-gradient(90deg,var(--brand),var(--brand-2));border:none;box-shadow:0 14px 36px rgba(139,92,246,.32)}
    .btn.ghost{background:transparent;border:1px solid #ffffff2e}
    .btn.small{padding:10px 12px;border-radius:10px}

    /* Mobile-friendly menu */
    .menu-toggle{display:none;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;border:1px solid #ffffff24;background:#ffffff0f;cursor:pointer}
    .menu-toggle svg{width:22px;height:22px;opacity:.9;filter:invert(1) grayscale(1) brightness(1.6) contrast(1.05)}

    /* Hide non-CTA links on small screens; keep 登录 / 立即购买 only */
    @media (max-width: 860px){
      .nav .menu .hide-mobile{display:none}
      .menu-toggle{display:inline-flex}
    }

    /* Drawer */
    .drawer{position:fixed;inset:0;z-index:50;display:none}
    .drawer.open{display:block}
    .drawer .backdrop{position:absolute;inset:0;background:rgba(5,8,22,.6);backdrop-filter:blur(6px)}
    .drawer .panel{position:absolute;right:0;top:0;height:100%;width:min(82%,360px);background:linear-gradient(180deg,#0e1632,#0b132c);border-left:1px solid #ffffff22;box-shadow:-10px 0 40px #00000066;padding:18px 16px 24px}
    .drawer .head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
    .drawer .head strong{font-size:16px;letter-spacing:.2px}
    .drawer .close{display:inline-flex;width:38px;height:38px;align-items:center;justify-content:center;border-radius:10px;border:1px solid #ffffff22;background:#ffffff12;cursor:pointer}
    .drawer nav{display:grid;gap:10px;margin-top:10px}
    .drawer nav a{padding:12px 10px;border-radius:12px;border:1px solid #ffffff18;background:#ffffff0a}
  
    /* ===== Hero ===== */
    .hero{position:relative;min-height:92vh;display:grid;place-items:center;overflow:clip}
    .hero .glow{position:absolute;inset:0;z-index:0;pointer-events:none}
    .hero .glow::before{content:"";position:absolute;inset:0;background:radial-gradient(60% 50% at 50% 40%, rgba(0,229,255,.22), transparent 60%)}
    canvas#globe{position:absolute;inset:0;width:100%;height:100%;display:block;z-index:1}
    .hero-inner{position:relative;z-index:2;text-align:center;padding:120px 0 80px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 10px;border:1px solid var(--ring);border-radius:999px;background:rgba(139,92,246,.15);color:#D7E8FF;font-weight:700;font-size:12px;letter-spacing:.5px;text-transform:uppercase}
    .hero h1{margin:14px 0 14px;font-size:clamp(38px,5.4vw,68px);line-height:1.05;letter-spacing:.2px;background:linear-gradient(90deg,#fff, #D1E7FF 40%, #B8A9FF 60%, #fff);-webkit-background-clip:text;background-clip:text;color:transparent}
    .hero p{margin:0 auto 28px;max-width:820px;color:#C7D4F3}
    .hero .actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

    /* Floating pills （已保留样式以防将来使用，但已从 DOM 去掉） */
    .pill{display:none}

    /* ===== Sections ===== */
    section{padding:80px 0;position:relative}
    section .section-divider{position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:min(960px,86%);height:1px;background:linear-gradient(90deg, transparent, var(--ring-2), transparent)}
    h2.section-title{font-size:30px;margin:0 0 10px;text-align:center}
    p.section-sub{margin:0 auto 28px;max-width:780px;color:#c7d6f3;text-align:center}

    /* ===== Cards Grid ===== */
    .grid{display:grid;gap:20px}
    .grid.cols-4{grid-template-columns:repeat(1,1fr)}
    @media (min-width:720px){.grid.cols-4{grid-template-columns:repeat(2,1fr)}}
    @media (min-width:1040px){.grid.cols-4{grid-template-columns:repeat(4,1fr)}}
    .card{position:relative;border-radius:var(--radius);padding:22px;background:linear-gradient(180deg,#0d1530cc,#0d163399);border:1px solid #ffffff18;box-shadow:0 8px 30px #00000033}
    .card{--g:linear-gradient(90deg,rgba(0,229,255,.35),rgba(139,92,246,.35));
          background:linear-gradient(180deg,rgba(13,22,51,.88),rgba(12,18,44,.84)) padding-box,
                     var(--g) border-box;
          border:1px solid transparent}
    .card:hover{transform:translateY(-2px);box-shadow:0 16px 50px rgba(139,92,246,.18)}
    .card .badge{position:absolute;top:14px;right:14px;font-size:12px;padding:6px 10px;border-radius:999px;background:#ffffff12;border:1px solid #ffffff24;color:#e6f3ff}
    .card h3{margin:6px 0 8px;font-size:18px}
    .card p{margin:0 0 14px;color:#c1cde6}
    .tag{display:inline-flex;align-items:center;gap:6px;padding:5px 10px;border:1px solid #ffffff26;border-radius:999px;font-size:12px;color:#cfe6ff;background:#ffffff10}
    .icon{width:22px;height:22px;vertical-align:-4px;opacity:1;filter:invert(1) grayscale(1) brightness(1.6) contrast(1.05);}

    /* Apps Promo strip */
    .apps{position:relative;isolation:isolate}
    .apps::before{content:"";position:absolute;inset:-1px;background:url('https://images.unsplash.com/photo-1523961131990-5ea7c61b2107?q=80&w=2070&auto=format&fit=crop') center/cover no-repeat;filter:brightness(.35) saturate(1.1);z-index:-2}
    .apps::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg, var(--bg) 0%, transparent 35%, transparent 70%, var(--bg) 100%);z-index:-1}
    .apps .apps-inner{text-align:center;padding:120px 0}

    /* Countries table */
    table.flags{width:100%;border-collapse:separate;border-spacing:0 10px}
    table.flags td{padding:12px 14px;background:#0c1430;border:1px solid #ffffff10}
    table.flags td:first-child{border-radius:12px 0 0 12px}
    table.flags td:last-child{border-radius:0 12px 12px 0}

    /* Security flow */
    .flow{display:grid;gap:16px;grid-template-columns:repeat(1,1fr)}
    @media(min-width:920px){.flow{grid-template-columns:repeat(4,1fr)}}
    .flow .step{background:linear-gradient(180deg,#0e1634,#0b1330);border:1px solid #ffffff1a;border-radius:16px;padding:20px}
    .flow .step h4{margin:8px 0}

    /* Pricing */
    .pricing{display:grid;gap:18px}
    @media(min-width:900px){.pricing{grid-template-columns:repeat(3,1fr)}}
    .price-card{background:linear-gradient(180deg,#0e1632,#0b132c);border:1px solid #ffffff20;border-radius:18px;padding:24px;position:relative}
    .price-card h3{margin:0 0 6px}
    .price-card .price{font-size:32px;font-weight:800;margin:6px 0}
    .feat{display:grid;gap:10px;margin:14px 0}
    .feat li{display:flex;gap:10px;align-items:flex-start}
    .feat svg{width:18px;height:18px;flex:0 0 18px;opacity:.9}

    /* Footer */
    footer{padding:38px 0;color:#9db0d8}
    footer .links{display:flex;gap:16px;flex-wrap:wrap}

    /* ===== CSS Fallback: 纯 CSS 自转地球（当 JS 不可用时） ===== */
    #earth-fb{position:absolute;inset:0;display:grid;place-items:center;z-index:0}
    #earth-fb .hint{position:absolute;bottom:18px;left:50%;transform:translateX(-50%);font-size:12px;color:#b6c7ef;opacity:.85;letter-spacing:.2px}
    #earth-fb .ring{position:absolute;width:80vmin;max-width:780px;aspect-ratio:1;border-radius:50%;box-shadow:0 0 160px 40px rgba(34,211,238,.08) inset, 0 0 80px 0 rgba(139,92,246,.12) inset}
    #earth-fb .earth{--spin-speed:28s;width:min(56vmin,680px);aspect-ratio:1;border-radius:50%;background:
        radial-gradient(60% 60% at 30% 30%, rgba(255,255,255,.22), rgba(0,0,0,0) 45%),
        conic-gradient(from 0deg, rgba(34,211,238,.15), rgba(139,92,246,.15), rgba(34,211,238,.15)),
        repeating-linear-gradient(0deg, rgba(34,211,238,.25) 0 1px, rgba(0,0,0,0) 1px 9px),
        repeating-linear-gradient(90deg, rgba(139,92,246,.25) 0 1px, rgba(0,0,0,0) 1px 9px);
      background-blend-mode:screen,screen,normal,screen,screen;box-shadow:0 40px 160px rgba(34,211,238,.25), 0 0 0 1px rgba(255,255,255,.08) inset;filter:saturate(1.1) contrast(1.05);animation:earthspin var(--spin-speed) linear infinite}
    @keyframes earthspin{to{transform:rotate(360deg)}}
    @media (prefers-reduced-motion: reduce){#earth-fb .earth{animation:none}}
    /* ===== 手机端：把动态地球整体上移，并让英雄区上下间距一致 ===== */
@media (max-width: 860px){
  :root{
    /* 往上挪动的幅度，按需微调：-6vh ~ -10vh 都可 */
    --globe-shift-mobile: -8vh;
    /* 英雄区上下留白保持一致（原来是 120px / 80px） */
    --hero-pad-mobile: 72px;
  }

  /* 英雄区上下留白等距 */
  .hero .hero-inner{
    padding-block: var(--hero-pad-mobile);
  }

  /* 把地球（含纯CSS的fallback）整体上移一些 */
  canvas#globe,
  #earth-fb{
    transform: translateY(var(--globe-shift-mobile));
    will-change: transform;
  }
}