:root{--ink:#eaf1ff;--bg:#0f1628;--card:#182238;--line:#263451;--muted:#9eb0cf;--blue:#4a7df7}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;background:var(--bg);color:var(--ink);line-height:1.75}img{max-width:100%;display:block}a{color:inherit}.header{height:72px;display:flex;align-items:center;gap:28px;padding:0 max(22px,6vw);border-bottom:1px solid var(--line);background:#10192d}.brand img{width:118px;height:38px;object-fit:contain;background:#fff;border-radius:6px;padding:2px 6px}.header nav{display:flex;gap:24px;margin-left:auto}.header nav a{text-decoration:none;color:var(--muted);font-size:14px}.cta-top{background:var(--blue);color:#fff;text-decoration:none;padding:12px 18px;border-radius:999px;font-weight:700}.hero{padding:56px max(22px,6vw) 38px;display:grid;grid-template-columns:1.02fr .98fr;gap:36px;align-items:center}.eyebrow{margin:0 0 10px;color:#8db1ff;letter-spacing:.14em;font-size:12px;font-weight:700}.hero h1{margin:0 0 18px;font-size:54px;line-height:1.08}.hero p{margin:0 0 18px;color:#c3d0eb}.hero-art img{width:100%;border-radius:22px;border:1px solid var(--line)}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;border-radius:14px;text-decoration:none;font-weight:700}.btn.primary{background:var(--blue);color:#fff}.btn.ghost{border:1px solid #4062b0;color:#cfe0ff}.proof-grid{padding:0 max(22px,6vw);display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:18px}.proof-grid figure{margin:0;background:#141d31;border:1px solid var(--line);border-radius:18px;overflow:hidden}.proof-grid .wide{grid-row:span 2}.proof-grid img{width:100%;height:100%;object-fit:contain;background:#141d31}.proof-grid figcaption{padding:12px 14px;color:var(--muted);font-size:13px}.dashboard{padding:70px max(22px,6vw) 20px}.dashboard-head h2{margin:6px 0 0;font-size:36px}.dashboard-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:26px}.dashboard-grid article{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:24px}.dashboard-grid span{display:inline-flex;width:42px;height:42px;border-radius:50%;align-items:center;justify-content:center;background:#243454;color:#fff;font-weight:700}.dashboard-grid h3{margin:14px 0 10px;font-size:22px}.dashboard-grid p{margin:0;color:var(--muted)}.protect{padding:25px max(22px,6vw) 0}.protect article{display:grid;grid-template-columns:1fr .92fr;gap:28px;align-items:center;margin-bottom:26px;background:#141d31;border:1px solid var(--line);border-radius:24px;padding:26px}.protect article.reverse{grid-template-columns:.92fr 1fr}.protect article.reverse figure{order:1}.protect article.reverse div{order:2}.protect h2{margin:6px 0 12px;font-size:34px;line-height:1.2}.protect p,.protect li{color:var(--muted)}.protect ul{padding-left:20px;margin:8px 0 0}.protect img{width:100%;border-radius:20px}.warning-grid{padding:24px max(22px,6vw);display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.warning-grid article{background:#121b2f;border:1px dashed #36508b;border-radius:20px;padding:22px}.warning-grid strong{display:block;margin-bottom:8px;font-size:18px}.warning-grid p{margin:0;color:var(--muted)}.download-panel{margin:56px max(22px,6vw);background:linear-gradient(135deg,#223359,#2d4b88);color:#fff;border-radius:28px;padding:34px 36px;display:flex;justify-content:space-between;gap:20px;align-items:center}.download-panel .light{color:#c3d7ff}.download-panel h2{margin:8px 0 10px;font-size:32px}.download-panel p{margin:0;color:#d7e4ff}.download-panel a{background:#fff;color:#16264d;text-decoration:none;padding:15px 24px;border-radius:16px;font-weight:700;white-space:nowrap}.faq{padding:0 max(22px,6vw) 80px}.faq header h2{margin:6px 0 20px;font-size:34px}.faq-list details{background:#141d31;border:1px solid var(--line);border-radius:16px;padding:18px 20px;margin-bottom:14px}.faq-list summary{cursor:pointer;font-weight:700}.faq-list p{margin:12px 0 0;color:var(--muted)}footer{padding:26px max(22px,6vw);border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;align-items:center;color:#c8d8f5}footer a{color:#fff;text-decoration:none;font-weight:700}.mobile-bar{display:none}
@media(max-width:900px){body{padding-bottom:64px}.header nav,.cta-top{display:none}.header{height:62px}.hero,.dashboard-grid,.proof-grid,.warning-grid,.protect article,.protect article.reverse{grid-template-columns:1fr}.hero h1{font-size:40px}.proof-grid .wide{grid-row:auto}.proof-grid img{height:auto;max-height:320px}.dashboard-head h2,.protect h2,.download-panel h2,.faq header h2{font-size:28px}.protect article.reverse figure,.protect article.reverse div{order:initial}.download-panel{margin:40px 18px;padding:28px;display:block}.download-panel a{display:inline-block;margin-top:12px}footer{display:block}.mobile-bar{display:flex;position:fixed;left:0;right:0;bottom:0;height:62px;padding:0 16px;background:#0d1425;color:#fff;align-items:center;justify-content:space-between;border-top:1px solid var(--line)}.mobile-bar a{background:var(--blue);color:#fff;text-decoration:none;padding:10px 16px;border-radius:12px;font-weight:700}}
/* Wide-screen containment */
.proof-grid{width:min(calc(100% - 48px),1180px);margin:0 auto;padding-inline:0}
.dashboard,.protect,.warning-grid,.faq{width:min(calc(100% - 48px),1240px);margin:0 auto;padding-inline:0}
.download-panel{width:min(calc(100% - 48px),1240px);margin:56px auto}
@media(min-width:1600px){.header,.hero,footer{padding-inline:max(24px,calc((100vw - 1240px)/2))}}
@media(max-width:900px){.download-panel{width:auto}}