:root{color-scheme:light;--ink:#232b29;--muted:#626b67;--line:#dedfd8;--paper:#f7f6f2;--accent:#bb5b35}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}.page{width:min(100% - 64px,1040px);margin:auto}.masthead{display:flex;justify-content:space-between;align-items:center;padding:30px 0;border-bottom:1px solid var(--line)}.wordmark{display:flex;align-items:center;gap:9px;font-size:13px;letter-spacing:2px;font-weight:650}.mark{display:grid;place-items:center;font-size:24px;width:31px;height:31px;border:1px solid #949e95;border-radius:50%;line-height:1}.language{border:1px solid #c9cec5;border-radius:24px;color:var(--ink);background:transparent;padding:9px 16px;font-size:13px;cursor:pointer}.language:hover{background:#eaece5}.language:focus-visible{outline:3px solid var(--accent);outline-offset:3px}main{padding:48px 0 12px}.eyebrow{display:flex;align-items:center;gap:9px;font-size:11px;letter-spacing:1.5px;color:#686e66}.dot{width:7px;height:7px;border-radius:100%;background:var(--accent)}h1{font-size:clamp(36px,5.2vw,64px);font-weight:540;line-height:1.25;letter-spacing:-1.8px;margin:18px 0 16px}.intro{color:var(--muted);font-size:16px;line-height:1.85;margin:0 0 30px}.video-shell{position:relative;display:flex;align-items:center;justify-content:center;border-radius:10px;background:#182623;aspect-ratio:16/9;overflow:hidden;box-shadow:0 12px 30px #152a1b0a}.video-shell video{display:block;width:100%;height:100%;object-fit:contain;background:#182623}.loading{position:absolute;inset:0;display:grid;place-items:center;color:#e6ebe4;font-size:14px;pointer-events:none}.loading[hidden]{display:none}.video-info{display:flex;justify-content:space-between;gap:12px;margin:15px 0;font-size:12px;color:var(--muted)}#release{font-variant-numeric:tabular-nums}.sample{margin:20px 0 0;padding:13px 15px;border-left:2px solid var(--accent);background:#f0ece2;color:#6c523f;font-size:13px;line-height:1.8}.tips{display:flex;gap:22px;padding:30px 0 26px;border-bottom:1px solid var(--line)}.tip-number{font-size:14px;letter-spacing:1px;color:var(--accent);padding-top:3px;white-space:nowrap}h2{font-size:16px;font-weight:550;margin:0 0 9px;letter-spacing:.1px}.tips p,.about p{font-size:14px;color:var(--muted);line-height:1.9;margin:0;max-width:650px}.about{padding:24px 0 28px}.about h2{font-size:14px}.about p{font-size:13px}footer{border-top:1px solid var(--line);padding:22px 0 28px;display:flex;justify-content:space-between;gap:16px;font-size:11px;color:#6a726c;letter-spacing:.4px}.error{font-size:14px;line-height:1.8;color:#973f2b;background:#f4e9e0;border-radius:5px;padding:14px}button,video{touch-action:manipulation}@media(max-width:600px){.page{width:calc(100% - 36px)}.masthead{padding:20px 0}.wordmark{font-size:11px;letter-spacing:1.5px}.language{padding:8px 13px}main{padding-top:32px}h1{font-size:38px;margin-top:15px;letter-spacing:-1px}.intro{font-size:14px;margin-bottom:23px}.video-shell{border-radius:6px}.video-info{font-size:11px;flex-wrap:wrap}.tips{padding-top:24px;gap:14px}.tips p{font-size:13px}footer{font-size:10px;flex-wrap:wrap}}@media(prefers-reduced-motion:no-preference){.language{transition:background .15s ease}}

.title-break{display:none}@media(max-width:600px){.title-break{display:block}}