:root{--bg:#f6f7fb;--fg:#1d2030;--card:#fff;--mut:#667;--ac:#7c5cff}
@media(prefers-color-scheme:dark){:root{--bg:#12131a;--fg:#e9eaf2;--card:#1d1f2a;--mut:#9a9cb0}}
*{box-sizing:border-box}body{margin:0;font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;background:var(--bg);color:var(--fg);line-height:1.6}
a{color:inherit;text-decoration:none}
.hero{background:linear-gradient(135deg,#7c5cff,#28c4d9);color:#fff;padding:0 5vw 80px}
nav{display:flex;justify-content:space-between;align-items:center;padding:20px 0}nav a{margin-left:20px;opacity:.9}.logo{font-weight:700;font-size:1.2rem}
.hero-in{text-align:center;padding-top:60px}.hero h1{font-size:clamp(2rem,6vw,3.6rem);margin:0}.hero p{opacity:.9}
.btn{display:inline-block;margin-top:16px;padding:10px 26px;border-radius:99px;background:#fff;color:#5b3fe0;font-weight:600}
section{max-width:1200px;margin:auto;padding:60px 5vw 20px}h2{margin:0;font-size:1.8rem}.sub{color:var(--mut);margin-top:4px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px}
figure{margin:0;background:var(--card);border-radius:14px;overflow:hidden;cursor:zoom-in;box-shadow:0 4px 16px #0001;transition:transform .2s}
figure:hover{transform:translateY(-4px)}figure img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block;background:#8a8a8a}
figcaption{padding:10px 14px;font-size:.95rem}
.vgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:18px}
.vcard{background:var(--card);border-radius:14px;overflow:hidden;box-shadow:0 4px 16px #0001}.vcard h3{margin:0;padding:12px 16px;font-size:1rem}
.vbox{aspect-ratio:16/9;position:relative;background:#22243a}.vbox iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.ph{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;color:#cfd2ff;border:2px dashed #555a90;margin:12px;border-radius:10px;padding:10px;text-align:center}
.ph code{font-size:.75rem;opacity:.8;word-break:break-all}
.about{max-width:720px}footer{text-align:center;color:var(--mut);padding:40px 0;font-size:.9rem}
#lb{position:fixed;inset:0;background:#000d;display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:9}#lb[hidden]{display:none}
#lb img{max-width:90vw;max-height:80vh;border-radius:8px}#lb p{color:#fff}
#lb button{position:absolute;background:#fff2;color:#fff;border:0;font-size:2rem;width:48px;height:48px;border-radius:50%;cursor:pointer}
.x{top:16px;right:16px}.pv{left:12px;top:50%}.nx{right:12px;top:50%}
@media(max-width:600px){nav a{margin-left:12px}.hero{padding-bottom:50px}.hero-in{padding-top:30px}}
@media(max-width:600px){.grid{grid-template-columns:1fr 1fr;gap:10px}figcaption{font-size:.8rem;padding:6px 8px}}
figcaption b{display:block}figcaption span{color:var(--mut);font-size:.85em}