:root{--bg:#ffffff;--bg2:#f5f7fa;--fg:#1f2328;--mut:#5b6472;--line:#dfe3ea;--acc:#2563eb;--acc2:#1d4ed8;--card:#ffffff;--ok:#16a34a;--fs:17px}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#0f1318;--bg2:#161b22;--fg:#e6edf3;--mut:#9aa4b2;--line:#2b323b;--card:#161b22;--acc:#3b82f6;--acc2:#60a5fa}}
:root[data-theme="dark"]{--bg:#0f1318;--bg2:#161b22;--fg:#e6edf3;--mut:#9aa4b2;--line:#2b323b;--card:#161b22;--acc:#3b82f6;--acc2:#60a5fa}
*{box-sizing:border-box}
html{font-size:var(--fs)}
body{margin:0;background:var(--bg);color:var(--fg);font:1rem/1.65 -apple-system,"Segoe UI","Microsoft JhengHei","PingFang TC",sans-serif}
a{color:var(--acc)}
.wrap{max-width:1080px;margin:0 auto;padding:0 16px}
header{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
header .wrap{display:flex;align-items:center;gap:12px;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--fg);text-decoration:none;font-size:1.05rem}
.brand img{width:32px;height:32px}
nav{margin-left:auto;display:flex;gap:6px;align-items:center;flex-wrap:wrap}
nav a{color:var(--mut);text-decoration:none;padding:6px 8px;border-radius:8px;font-size:.92rem}
nav a:hover{color:var(--fg);background:var(--bg2)}
.tools button{background:none;border:1px solid var(--line);color:var(--fg);border-radius:8px;padding:3px 8px;cursor:pointer;font-size:.85rem}
.hero{padding:64px 0 32px;text-align:center}
.hero h1{font-size:2.4rem;line-height:1.2;margin:0 0 12px}
.hero p{color:var(--mut);font-size:1.15rem;max-width:720px;margin:0 auto 24px}
.btn{display:inline-block;background:var(--acc);color:#fff;text-decoration:none;padding:12px 22px;border-radius:10px;font-weight:600;margin:4px}
.btn:hover{background:var(--acc2)}
.btn.ghost{background:none;color:var(--acc);border:1px solid var(--acc)}
.note{color:var(--mut);font-size:.85rem;margin-top:10px}
.shot{margin:32px auto 0;max-width:1000px;border-radius:12px;border:1px solid var(--line);box-shadow:0 16px 40px rgba(0,0,0,.15);overflow:hidden}
.shot img{display:block;width:100%;height:auto}
section{padding:48px 0;border-top:1px solid var(--line)}
section h2{font-size:1.7rem;text-align:center;margin:0 0 28px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px}
.card h3{margin:0 0 6px;font-size:1.08rem}
.card p{margin:0;color:var(--mut);font-size:.95rem}
.price{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px;align-items:stretch}
.plan{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:24px;display:flex;flex-direction:column}
.plan.best{border:2px solid var(--acc)}
.plan .tag{color:var(--acc);font-weight:700;font-size:.8rem;text-transform:uppercase;letter-spacing:.05em}
.plan .amt{font-size:2.2rem;font-weight:800;margin:6px 0 0}
.plan .per{color:var(--mut);font-size:.9rem;margin-bottom:12px}
.plan ul{padding-left:1.1em;margin:0 0 18px;flex:1}
.plan li{margin:4px 0}
.plan .btn{text-align:center}
.faq details{border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin:10px 0;background:var(--card)}
.faq summary{cursor:pointer;font-weight:600}
footer{border-top:1px solid var(--line);padding:28px 0;color:var(--mut);font-size:.88rem}
footer .wrap{display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between}
footer a{color:var(--mut)}
.doc{max-width:860px;margin:0 auto;padding:32px 16px}
@media (max-width:640px){.hero{padding:40px 0 20px}.hero h1{font-size:1.8rem}nav a.hide-sm{display:none}}