:root{--bg:#070a16;--panel:#101628;--panel2:#141c31;--line:rgba(255,255,255,.12);--text:#f7f8ff;--muted:#abb4cb;--purple:#8b5cf6;--cyan:#22d3ee;--coral:#fb7185;--green:#34d399;--shadow:0 24px 70px rgba(0,0,0,.35)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 15% 0,rgba(139,92,246,.18),transparent 35%),radial-gradient(circle at 90% 25%,rgba(34,211,238,.11),transparent 32%),var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7}a{color:inherit}.shell{width:min(1120px,calc(100% - 32px));margin:auto}.topbar{position:sticky;top:0;z-index:20;background:rgba(7,10,22,.82);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.topbar-inner{min-height:66px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{font-weight:800;letter-spacing:.05em}.topnav{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.topnav a,.back{padding:8px 13px;border:1px solid var(--line);border-radius:999px;text-decoration:none;color:var(--muted);font-size:13px}.topnav a:hover,.back:hover{color:#fff;border-color:rgba(139,92,246,.7)}.hero{padding:46px 0 24px}.hero-media{position:relative;min-height:460px;border:1px solid var(--line);border-radius:30px;overflow:hidden;box-shadow:var(--shadow);background:#0c1222}.hero-media>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.hero-media:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(3,7,18,.94) 0%,rgba(3,7,18,.62) 42%,rgba(3,7,18,.08) 75%),linear-gradient(0deg,rgba(3,7,18,.72),transparent 45%)}.hero-copy{position:relative;z-index:2;max-width:560px;padding:58px 50px}.eyebrow{color:var(--cyan);font-size:12px;font-weight:800;letter-spacing:.18em;text-transform:uppercase}.hero h1{font-size:clamp(34px,6vw,64px);line-height:1.14;margin:12px 0 18px;letter-spacing:-.04em}.hero p{color:#d8def0;font-size:17px;margin:0 0 22px}.pills{display:flex;gap:9px;flex-wrap:wrap}.pill{display:inline-flex;align-items:center;gap:6px;padding:7px 12px;border:1px solid rgba(255,255,255,.18);background:rgba(7,10,22,.62);border-radius:999px;font-size:13px}.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;text-decoration:none;border-radius:13px;padding:11px 16px;font-weight:750;border:1px solid var(--line)}.btn-primary{background:linear-gradient(135deg,var(--purple),#a855f7);border:0}.btn-ghost{background:rgba(255,255,255,.06)}.section{padding:52px 0}.section-title{font-size:clamp(25px,4vw,38px);line-height:1.25;margin:0 0 8px}.section-sub{color:var(--muted);margin:0 0 24px}.grid{display:grid;gap:16px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.card{background:linear-gradient(145deg,rgba(20,28,49,.94),rgba(12,18,34,.94));border:1px solid var(--line);border-radius:22px;padding:24px;box-shadow:0 16px 45px rgba(0,0,0,.18)}.card h3{margin:8px 0 7px;font-size:21px}.card p{margin:0;color:var(--muted)}.icon{width:45px;height:45px;display:grid;place-items:center;border-radius:14px;background:linear-gradient(135deg,rgba(139,92,246,.25),rgba(34,211,238,.15));font-size:22px}.steps{counter-reset:step;display:grid;gap:12px}.step{display:grid;grid-template-columns:48px 1fr;gap:14px;align-items:start;padding:18px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.035)}.step:before{counter-increment:step;content:counter(step,decimal-leading-zero);width:42px;height:42px;border-radius:13px;background:linear-gradient(135deg,var(--purple),#a855f7);display:grid;place-items:center;font-weight:900}.step b{display:block;font-size:17px;margin-bottom:2px}.step span{color:var(--muted);font-size:14px}.compare{overflow:auto;border:1px solid var(--line);border-radius:20px}.compare table{width:100%;min-width:650px;border-collapse:collapse;background:rgba(16,22,40,.9)}.compare th,.compare td{padding:15px 17px;text-align:left;border-bottom:1px solid var(--line)}.compare th{color:#fff;background:rgba(139,92,246,.1)}.compare td{color:var(--muted)}.compare tr:last-child td{border-bottom:0}.yes{color:var(--green);font-weight:800}.note{border-left:4px solid var(--cyan);background:rgba(34,211,238,.08);padding:14px 17px;border-radius:0 14px 14px 0;color:#dce8f4;font-size:14px}.visual{position:relative;border-radius:24px;overflow:hidden;border:1px solid var(--line);min-height:360px;background:#0c1222}.visual img{width:100%;height:100%;min-height:360px;object-fit:cover;display:block}.visual:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(7,10,22,.82),transparent 58%);pointer-events:none}.callouts{position:absolute;inset:auto 18px 18px;z-index:2;display:flex;gap:9px;flex-wrap:wrap}.callout{background:rgba(7,10,22,.84);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2);border-radius:12px;padding:9px 12px;font-size:13px;font-weight:750}.video-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.video-slot{border:1px solid var(--line);border-radius:20px;overflow:hidden;background:var(--panel)}.video-poster{aspect-ratio:16/9;position:relative;background:#0d1323}.video-poster img{width:100%;height:100%;object-fit:cover;opacity:.72}.play{position:absolute;inset:0;display:grid;place-items:center}.play span{width:58px;height:58px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--purple),#a855f7);font-size:22px;box-shadow:0 12px 30px rgba(139,92,246,.45)}.video-copy{padding:18px}.video-copy small{color:var(--cyan);font-weight:800}.video-copy h3{margin:4px 0 6px}.video-copy p{margin:0;color:var(--muted);font-size:14px}.path{display:none!important}.module-link{display:block;text-decoration:none;transition:transform .2s,border-color .2s}.module-link:hover{transform:translateY(-3px);border-color:rgba(139,92,246,.7)}.module-link .arrow{color:var(--cyan);font-weight:800;margin-top:16px}.privacy{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.privacy .card{border-top:3px solid var(--purple)}.footer{margin-top:50px;padding:28px 0 38px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}.footer-inner{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}.scene-note{display:none}.scene-note.active{display:block;margin-top:16px}.shot{border-radius:18px;border:1px solid var(--line);background:#eef2ff;color:#172033;padding:18px;overflow:hidden}.shot-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;font-weight:800}.shot-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.shot-tile{background:#fff;border:1px solid #d9dff0;border-radius:13px;padding:13px;min-height:94px}.shot-tile b{display:block;color:#4f46e5;font-size:14px}.shot-tile span{font-size:12px;color:#64748b}.badge{display:inline-flex;padding:4px 9px;border-radius:999px;background:#e0e7ff;color:#4338ca;font-size:11px;font-weight:800}.legal{font-size:12px;color:#8994ac;margin-top:14px}
@media(max-width:760px){.shell{width:min(100% - 22px,1120px)}.topbar-inner{padding:9px 0;align-items:flex-start}.brand{padding-top:7px}.topnav{gap:5px}.topnav a{font-size:11px;padding:6px 9px}.hero{padding-top:22px}.hero-media{min-height:540px;border-radius:22px}.hero-media:after{background:linear-gradient(0deg,rgba(3,7,18,.97) 0%,rgba(3,7,18,.66) 62%,rgba(3,7,18,.1) 100%)}.hero-copy{position:absolute;bottom:0;padding:28px 22px}.hero h1{font-size:38px}.hero p{font-size:15px}.section{padding:38px 0}.grid-2,.grid-3,.privacy,.video-list{grid-template-columns:1fr}.card{padding:20px}.visual,.visual img{min-height:300px}.shot-grid{grid-template-columns:1fr}.footer-inner{display:block}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
/* v1.1.14：真实页面优先，短句优先。 */
.tutorial-video{width:100%;max-height:68vh;display:block;background:#081613;object-fit:contain;border-radius:24px}
.quick-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:20px}
.quick-link{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px 20px;border-radius:18px;background:var(--panel);border:1px solid var(--line);color:var(--text);text-decoration:none;box-shadow:0 14px 34px rgba(0,0,0,.18)}
.quick-link b{display:block;font-size:17px}.quick-link span{display:block;margin-top:4px;color:var(--muted);font-size:13px;line-height:1.55}.quick-link i{font-style:normal;font-size:24px;color:var(--cyan)}
.focus-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.focus-card{padding:18px;border-radius:20px;background:var(--panel);border:1px solid var(--line)}
.focus-card b{display:block;font-size:17px}.focus-card p{margin:7px 0 0;color:var(--muted);font-size:14px;line-height:1.7}.focus-card .tag{display:inline-flex;margin-bottom:10px;padding:5px 9px;border-radius:999px;background:rgba(52,211,153,.12);color:var(--green);font-size:11px;font-weight:800}
.tip-line{margin-top:16px;padding:14px 16px;border-radius:15px;background:rgba(251,191,36,.09);border:1px solid rgba(251,191,36,.28);color:#fde7a7;font-size:14px;line-height:1.65}
@media(max-width:680px){.quick-links,.focus-grid{grid-template-columns:1fr}.tutorial-video{border-radius:16px}.quick-link{padding:15px 16px}}
@media(max-width:760px){.shell{width:min(calc(100% - 22px),1120px)}}