:root{color-scheme:dark;--bg:#101719;--card:#182526;--line:#2c4140;--text:#e3eeeb;--muted:#a8bdb7;--green:#79e1b1;font-family:"Microsoft YaHei","PingFang SC",sans-serif}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);line-height:1.8}a{color:var(--green);text-underline-offset:4px}header,main,footer{max-width:1100px;margin:auto;padding:0 32px}header{height:92px;display:flex;justify-content:space-between;align-items:center;gap:20px}header a{text-decoration:none}.brand{font-size:19px;font-weight:700;color:var(--text)}nav{display:flex;gap:24px;font-size:14px}.hero{display:grid;grid-template-columns:1.2fr .8fr;align-items:center;gap:60px;padding:60px 0 80px}.eyebrow{font-size:12px;letter-spacing:.14em;color:var(--green);font-weight:700}h1{font-size:clamp(36px,5vw,58px);line-height:1.3;letter-spacing:-.04em;margin:24px 0}h2{font-size:23px;line-height:1.5;margin:14px 0}.lead{font-size:19px;color:var(--muted)}.meta{margin-top:30px;font-size:14px}.primary{display:inline-flex;align-items:center;justify-content:space-between;gap:70px;padding:14px 25px;border-radius:10px;background:var(--green);color:#10221b;font-weight:700;text-decoration:none;font-size:17px}.small{font-size:12px;color:var(--muted)}.phone{margin:0;max-width:270px;justify-self:center}.phone img{display:block;width:100%;height:auto;max-height:580px;object-fit:contain;border:7px solid #304341;border-radius:28px;box-shadow:0 20px 60px #0006}.phone figcaption{text-align:center;font-size:12px;color:var(--muted);margin-top:12px}section{margin-bottom:45px;scroll-margin-top:20px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.cards article,.panel{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:28px}.cards b{font-size:12px;color:var(--green)}.cards p,.panel p,.panel li{color:var(--muted);font-size:14px}.cards h2{font-size:20px}.panel ol,.panel ul{padding-left:22px}.panel li{margin:12px 0}.upgrade{border-left:3px solid var(--green);padding:12px 20px;margin:25px 0;background:#203330}.upgrade p{margin:6px 0}summary{cursor:pointer;color:var(--green)}code{display:block;overflow-wrap:anywhere;word-break:break-all;font-size:12px;color:var(--text)}footer{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:28px;padding-bottom:35px;font-size:12px;color:var(--muted)}.document{max-width:850px}.document h1{font-size:34px}.document .policy{white-space:pre-wrap;font-size:15px;color:var(--muted);line-height:2}.document .panel{margin-top:30px}
.tutorial-link{display:inline-flex;flex-wrap:wrap;gap:8px 16px;margin-top:12px;font-size:15px}.tutorial-link span{color:var(--muted);font-size:12px}.tutorial-video{margin:24px 0 0}.tutorial-player{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:12px;background:#000}.tutorial-player video{display:block;width:100%;height:auto;aspect-ratio:1608/1080}.tutorial-player button{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:max-content;max-width:90%;border:1px solid var(--green);border-radius:10px;padding:14px 20px;background:#10221bf2;color:var(--green);font-family:inherit;font-size:16px;font-weight:700;line-height:1.6;cursor:pointer}.tutorial-player button:disabled{cursor:wait}.tutorial-player button:focus-visible,.tutorial-link:focus-visible{outline:3px solid var(--green);outline-offset:5px}.tutorial-video figcaption{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 20px;margin-top:12px;font-size:12px;color:var(--muted)}
@media(max-width:700px){header,main,footer{padding-left:20px;padding-right:20px}header{height:80px}.brand{font-size:16px}nav{gap:12px;font-size:12px}.hero{grid-template-columns:1fr;gap:35px;padding-top:20px}.hero .phone{max-width:250px}.cards{grid-template-columns:1fr}.panel,.cards article{padding:22px}.primary{width:100%}h1{font-size:39px}.lead{font-size:17px}.tutorial-player button{font-size:14px;padding:10px 14px}}