*{box-sizing:border-box;margin:0;padding:0}body{color:#1e293b;background:linear-gradient(160deg,#eef2ff 0%,#f8fafc 55%,#ecfeff 100%);min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}.container{max-width:1080px;margin:0 auto;padding:0 24px}.nav{backdrop-filter:blur(8px);z-index:10;background:#ffffffd9;border-bottom:1px solid #0f172a0f;position:sticky;top:0}.nav-inner{justify-content:space-between;align-items:center;height:60px;display:flex}.brand{color:inherit;align-items:center;gap:10px;font-size:1.05rem;font-weight:700;text-decoration:none;display:flex}.brand img{border-radius:8px;width:30px;height:30px;display:block}.nav-actions{align-items:center;gap:14px;display:flex}.btn-qq{color:#475569;border:1px solid #0f172a1a;border-radius:10px;align-items:center;gap:7px;padding:9px 18px;font-size:.95rem;font-weight:600;text-decoration:none;transition:color .15s,border-color .15s,background 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.accent{background:linear-gradient(15deg,#ff6318,#ff8c42);color:#0000;-webkit-background-clip:text;background-clip:text}.hero-sub{color:#64748b;margin-top:18px;font-size:clamp(1rem,2.2vw,1.2rem)}.hero-sub .dot{color:#cbd5e1;margin:0 10px}.download-wrap{margin-top:40px}.download-btns{flex-wrap:wrap;justify-content:center;align-items:center;gap:14px;display:flex}.btn-download{color:#fff;background:#ff6318;border-radius:12px;align-items:center;gap:12px;padding:15px 42px;font-size:1.1rem;font-weight:600;text-decoration:none;transition:transform .15s,box-shadow .15s;display:inline-flex;box-shadow:0 8px 24px #ff631847}.btn-download:hover{transform:translateY(-2px);box-shadow:0 12px 30px #ff63185c}.btn-download svg{fill:currentColor;width:22px;height:22px}.btn-download-secondary{color:#ff6318;background:#fff;box-shadow:0 6px 18px #ff63181a,inset 0 0 0 1px #ff631859}.btn-download-secondary:hover{box-shadow:0 10px 26px #ff63182e,inset 0 0 0 1px #ff6318}.download-hint{color:#94a3b8;margin-top:14px;font-size:.85rem}.features{grid-template-columns:repeat(4,1fr);gap:18px;padding-bottom:96px;display:grid}.feature-card{text-align:center;background:#fff;border-radius:16px;padding:28px 22px;box-shadow:0 6px 24px #1e293b0f}.feature-icon{margin-bottom:12px;font-size:1.8rem}.feature-title{margin-bottom:8px;font-size:1.02rem;font-weight:700}.feature-desc{color:#64748b;font-size:.86rem;line-height:1.7}.promo{color:#9a3412;background:linear-gradient(135deg,#fff8f1,#ffe9d6);border:1px solid #ff63184d;border-radius:14px;flex-wrap:wrap;justify-content:center;align-items:center;gap:12px;margin-top:26px;padding:13px 24px;font-size:1rem;font-weight:600;display:inline-flex;box-shadow:0 6px 20px #ff631821}.promo-tag{color:#fff;letter-spacing:.02em;background:#ff6318;border-radius:999px;flex:none;padding:4px 11px;font-size:.78rem;font-weight:700}.promo strong{color:#ff6318;font-weight:800}.coming{text-align:center;padding-bottom:96px}.coming-badge{color:#ff6318;background:#ff63181a;border-radius:999px;padding:5px 14px;font-size:.78rem;font-weight:700;display:inline-block}.coming-title{margin-top:14px;font-size:clamp(1.3rem,3vw,1.7rem);font-weight:800}.coming-sub{color:#64748b;margin-top:12px;font-size:.95rem}.coming-grid{grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px;display:grid}.coming-card{background:#fff;border:1px dashed #ff631852;border-radius:16px;padding:26px 22px;box-shadow:0 6px 24px #1e293b0f}.coming-icon{margin-bottom:12px;font-size:1.8rem}.coming-name{margin-bottom:8px;font-size:1.02rem;font-weight:700}.coming-desc{color:#64748b;font-size:.86rem;line-height:1.7}.footer{text-align:center;color:#94a3b8;border-top:1px solid #0f172a0f;padding:24px;font-size:.85rem}@media (width<=860px){.hero{padding:64px 20px 48px}.features{grid-template-columns:repeat(2,1fr)}}@media 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