:root{--bg:#faf9f6;--fg:#1c1917;--muted:#78716c;--line:#e7e5e4;--accent:#1c1917}
@media (prefers-color-scheme:dark){:root{--bg:#121110;--fg:#f5f5f4;--muted:#a8a29e;--line:#292524;--accent:#f5f5f4}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.7 -apple-system,"PingFang SC","Microsoft YaHei",sans-serif}
a{color:inherit}.wrap{max-width:960px;margin:0 auto;padding:0 20px}
header{display:flex;align-items:center;justify-content:space-between;padding:20px 0}.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:18px;text-decoration:none}.brand img{width:28px;height:28px}
.btn{display:inline-block;padding:10px 20px;border-radius:999px;background:var(--accent);color:var(--bg);text-decoration:none;font-weight:500}.btn.ghost{background:transparent;color:var(--fg);border:1px solid var(--line)}
.hero{padding:70px 0 50px;text-align:center}.hero h1{font-size:44px;line-height:1.2;margin:0 0 16px}.hero p{color:var(--muted);font-size:18px;max-width:640px;margin:0 auto 28px}
h2{font-size:22px;margin:50px 0 16px}.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}.card{border:1px solid var(--line);border-radius:14px;padding:18px}.card b{display:block;margin-bottom:6px}.card span{color:var(--muted);font-size:14px}
table{width:100%;border-collapse:collapse}td,th{padding:10px 8px;border-bottom:1px solid var(--line);text-align:left}th{color:var(--muted);font-weight:500;font-size:14px}.muted{color:var(--muted);font-size:14px}
footer{margin-top:70px;padding:28px 0;border-top:1px solid var(--line);color:var(--muted);font-size:13px;line-height:2}
.pay{max-width:420px;margin:60px auto;border:1px solid var(--line);border-radius:16px;padding:28px;text-align:center}.pay .amt{font-size:36px;font-weight:600;margin:12px 0}