/* Weya 设计系统：与 APP 同源的深色、紫青强调色与简洁内容层级。 */
:root{color-scheme:dark;--bg:#0d101b;--text:#f2f2fb;--muted:#a8afc0;--line:#282f40;--cyan:#42d3da;--purple:#925cff}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,"Microsoft YaHei",sans-serif;line-height:1.65}a{color:inherit;text-decoration:none}a:hover{color:var(--cyan)}a:focus-visible,video:focus-visible{outline:3px solid var(--cyan);outline-offset:5px}header,footer,main{max-width:1320px;margin:auto}header{padding:12px 0;display:flex;align-items:center;justify-content:space-between}.brand{font-size:34px;font-weight:800;letter-spacing:-1.8px}nav{display:flex;gap:42px;font-size:18px;color:#c6cbda}.hero{display:grid;grid-template-columns:1.2fr 1fr;align-items:center;gap:30px;min-height:650px}.hero h1{font-size:clamp(54px,7.2vw,104px);line-height:1.08;letter-spacing:-5px;margin:0 0 22px;font-weight:800}.hero p{font-size:24px;line-height:1.5;color:var(--muted);margin:0 0 38px}.actions{display:flex;gap:24px;align-items:center;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;gap:16px;padding:14px 32px;border-radius:30px;font-size:20px;font-weight:600;border:1px solid #8994cc;min-height:58px}.primary{border:0;background:linear-gradient(105deg,var(--purple),#27d2de);color:white}.primary:hover{color:white;filter:brightness(1.12)}.btn svg{width:24px;height:24px}.gallery{position:relative;height:620px;display:flex;align-items:center;padding-left:20px}.gallery video{position:relative;z-index:2;width:72%;height:600px;object-fit:cover;border-radius:24px;border:1px solid #c5b6a5;background:#191d29}.gallery .back{width:46%;height:510px;object-fit:cover;position:absolute;right:0;transform:rotate(8deg);border-radius:20px;opacity:.85}.features{display:grid;grid-template-columns:repeat(3,1fr);gap:52px;padding:48px 18px}.features svg{width:56px;height:56px;stroke:var(--cyan);stroke-width:1.6;fill:none}.features article:first-child svg{stroke:var(--purple)}h2{font-size:28px;line-height:1.3;margin:18px 0 8px}p{color:var(--muted)}.features p{font-size:18px;margin:0}footer{border-top:1px solid var(--line);padding:22px 0;display:flex;align-items:center;justify-content:space-between;margin-top:16px}footer .brand{font-size:24px}footer nav{font-size:15px;gap:24px}.legal{max-width:960px;padding:68px 0}.legal h1{font-size:52px;line-height:1.1;letter-spacing:-2px;margin:0 0 18px}.legal h2{margin-top:38px}.legal a{color:var(--cyan);text-decoration:underline}.legal li{color:var(--muted);margin:8px 0}.draft{padding:15px 20px;border-left:3px solid var(--purple);background:#191d2b;color:#c5c9d6}.legal table{border-collapse:collapse;width:100%;font-size:15px}.legal th,.legal td{padding:14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}.legal td{color:var(--muted)}.toc{display:flex;gap:18px;flex-wrap:wrap;margin:32px 0}.meta{font-size:14px}.contact{display:block;padding:18px;background:#191f2e;border-radius:12px;margin:20px 0;overflow-wrap:anywhere}video{max-width:100%}@media(max-width:1400px){header,footer,main{margin-left:4.5%;margin-right:4.5%}.hero{min-height:650px}.gallery video{height:560px}.gallery{height:580px}.gallery .back{height:470px}.hero h1{letter-spacing:-4px}.legal{margin:auto;padding:60px 5%}}@media(max-width:800px){header{padding:18px 0}.brand{font-size:29px}nav{gap:20px;font-size:15px}.hero{grid-template-columns:1fr;padding-top:38px;gap:30px}.hero h1{font-size:clamp(48px,11vw,78px);letter-spacing:-2px}.hero p{font-size:19px;margin-bottom:26px}.actions{gap:12px}.btn{font-size:15px;padding:13px 20px;min-height:48px}.gallery{height:500px;max-width:450px;width:100%;justify-self:center;padding:0}.gallery video{height:480px;width:73%}.gallery .back{height:410px}.features{grid-template-columns:1fr;gap:35px;padding:44px 0}.features h2{font-size:24px}.features p{font-size:16px}footer{gap:16px;align-items:flex-start}footer nav{flex-wrap:wrap;font-size:13px;gap:14px}.legal h1{font-size:40px}.legal{padding-top:40px}.legal table{font-size:13px}.legal td,.legal th{padding:10px 6px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* 手机端限制倾斜预览图片的绘制范围，防止横向滚动。 */
@media(max-width:800px){.gallery{overflow:hidden;border-radius:20px}}