:root{--bg: #f4f3ef;--bg-soft: #ecebe5;--card: #ffffff;--ink: #14130f;--ink-2: #3a382f;--muted: #6b6a60;--line: #e2e0d7;--accent: #ff6a13;--accent-d: #e85c08;--radius: 18px;--serif: "Songti SC", "Noto Serif SC", Georgia, "Times New Roman", serif;--sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased;line-height:1.6}a{color:inherit;text-decoration:none}.wrap{max-width:1120px;margin:0 auto;padding:0 24px}.btn{display:inline-flex;align-items:center;gap:8px;border:1px solid transparent;border-radius:999px;padding:13px 24px;font-size:15px;font-weight:600;font-family:var(--sans);cursor:pointer;transition:transform .12s ease,background .15s ease,box-shadow .15s ease,opacity .15s;white-space:nowrap}.btn:active{transform:translateY(1px)}.btn.sm{padding:9px 18px;font-size:14px}.btn.block{width:100%;justify-content:center}.btn.primary{background:var(--ink);color:#fff}.btn.primary:hover{background:#000;box-shadow:0 8px 22px #0000002e}.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line)}.btn.ghost:hover{background:#fff;border-color:#cfcdc2}.btn:disabled{opacity:.5;cursor:default;box-shadow:none}.btn-ico{font-size:15px;line-height:1}.btn-sub{font-style:normal;font-weight:500;font-size:12px;opacity:.7;margin-left:2px}.nav{position:sticky;top:0;z-index:20;background:#f4f3efd1;-webkit-backdrop-filter:saturate(1.4) blur(10px);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}.nav-inner{display:flex;align-items:center;height:64px;gap:24px}.brand{display:flex;align-items:center;gap:10px;font-weight:700}.brand-logo{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--accent),var(--accent-d));box-shadow:inset 0 0 0 1px #0000000d}.brand-name{font-size:19px;letter-spacing:.2px}.nav-links{display:flex;gap:26px;margin:0 auto;font-size:15px;color:var(--ink-2)}.nav-links a:hover{color:var(--accent-d)}.nav-right{display:flex;align-items:center;gap:16px}.lang{font-size:14px;color:var(--muted)}.hero{padding:64px 0 40px;text-align:center}.notice{display:inline-flex;align-items:center;gap:8px;background:var(--bg-soft);border:1px solid var(--line);color:var(--ink-2);font-size:13.5px;padding:7px 16px;border-radius:999px;margin-bottom:34px}.notice span{color:var(--accent-d)}.hero h1{font-family:var(--serif);font-weight:600;font-size:clamp(44px,7vw,88px);line-height:1.05;letter-spacing:-.5px;margin:0 0 22px}.hero h1 .hl{color:var(--accent)}.lead{max-width:680px;margin:0 auto 30px;font-size:18px;color:var(--muted)}.hero-cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-bottom:54px}.devices{display:grid;grid-template-columns:1fr 1.25fr;gap:22px;max-width:980px;margin:0 auto;text-align:left}.device{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 24px 60px -30px #00000059}.dev-bar{display:flex;align-items:center;gap:7px;padding:12px 16px;border-bottom:1px solid var(--line);background:var(--bg-soft)}.dev-bar.win{justify-content:space-between}.dot{width:11px;height:11px;border-radius:50%}.dot.r{background:#ff5f57}.dot.y{background:#febc2e}.dot.g{background:#28c840}.dev-title{font-size:12.5px;color:var(--muted);margin-left:8px}.win-ctrls{display:flex;gap:14px;color:var(--muted);font-size:11px;font-style:normal}.win-ctrls i{font-style:normal}.dev-body{padding:30px 26px 34px;min-height:190px}.dev-h{font-family:var(--serif);font-size:24px;margin-bottom:20px;color:var(--ink)}.dev-input{display:flex;align-items:center;justify-content:space-between;border:1px solid var(--line);border-radius:12px;padding:12px 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14px}.section-sub{font-size:17px;color:var(--muted);margin:0}.section-sub.center{text-align:center;max-width:620px;margin:0 auto}.grid{display:grid;gap:18px}.grid.feat{grid-template-columns:repeat(3,1fr)}.grid.gw{grid-template-columns:repeat(2,1fr)}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;transition:transform .15s ease,box-shadow .15s ease}.card:hover{transform:translateY(-3px);box-shadow:0 18px 40px -26px #0000004d}.card-ico{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;font-size:20px;color:var(--accent-d);background:#ff6a131a;margin-bottom:16px}.card h3{font-size:20px;margin:0 0 8px}.card p{font-size:15px;color:var(--muted);margin:0}.chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:16px}.chips span{font-size:12.5px;color:var(--ink-2);background:var(--bg-soft);border:1px solid var(--line);border-radius:999px;padding:4px 11px}.card.outline{position:relative}.card.outline .num{font-family:var(--serif);font-size:15px;color:var(--accent);font-weight:700}.card.outline h3{margin-top:8px}.private{display:grid;grid-template-columns:1fr 1fr;gap:18px}.model-card{background:var(--ink);color:#fff;border-radius:var(--radius);padding:34px 30px}.model-name{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:26px;font-weight:600;letter-spacing:.3px}.model-meta{color:#b9b7ac;font-size:14px;margin-top:8px}.private-note{grid-column:1 / -1;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px 26px;color:var(--muted);font-size:15px}.grid.scen{grid-template-columns:repeat(3,1fr)}.scen-card{border:1px solid var(--line);border-radius:var(--radius);padding:24px;background:var(--card)}.scen-card h4{font-size:17px;margin:0 0 8px}.scen-card p{font-size:14.5px;color:var(--muted);margin:0}.download{padding:88px 0;border-top:1px solid var(--line);text-align:center;background:var(--bg-soft)}.dl-cards{display:grid;grid-template-columns:1fr 1fr;gap:18px;max-width:720px;margin:40px auto 0}.dl-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;text-align:left;display:flex;flex-direction:column;gap:20px}.dl-os{display:flex;align-items:center;gap:14px}.dl-ico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:var(--ink);color:#fff;font-size:20px}.dl-os b{display:block;font-size:18px}.dl-os em{font-style:normal;font-size:13px;color:var(--muted)}.foot{border-top:1px solid var(--line);padding:40px 0}.foot-inner{display:flex;align-items:center;gap:28px;flex-wrap:wrap}.foot-cols{display:flex;gap:22px;color:var(--muted);font-size:14px}.foot-cols a:hover{color:var(--accent-d)}.foot-copy{margin-left:auto;color:var(--muted);font-size:13.5px}@media (max-width: 900px){.nav-links{display:none}.grid.feat,.grid.gw,.grid.scen,.private,.dl-cards,.devices{grid-template-columns:1fr}.foot-copy{margin-left:0;width:100%}}