:root{--blue:#2563eb;--blue-d:#1d4ed8;--orange:#d97706;--ink:#1f2937;--gray:#64748b;--line:#e5e7eb;--bg:#f6f8fc}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.7}
a{color:var(--blue);text-decoration:none}
.wrap{max-width:1080px;margin:0 auto;padding:0 18px}
header.top{position:sticky;top:0;background:#fff;border-bottom:1px solid var(--line);z-index:10}
.nav{display:flex;align-items:center;gap:18px;height:60px}
.logo{font-size:19px;font-weight:800;color:var(--ink)}
.logo b{color:var(--blue)}
.nav .sp{flex:1}
.nav a.m{color:var(--gray);font-size:15px}
.nav a.m:hover{color:var(--blue)}
.hero{background:linear-gradient(135deg,#2563eb,#06b6d4);color:#fff;padding:52px 0 60px}
.hero h1{font-size:34px;margin:0 0 12px;line-height:1.35}
.hero p{font-size:18px;opacity:.95;margin:0 0 24px}
.btn{display:inline-block;background:var(--blue);color:#fff;border:0;border-radius:10px;padding:12px 24px;font-size:16px;cursor:pointer}
.btn.big{font-size:18px;padding:14px 30px}
.btn.ghost{background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.6)}
.btn.orange{background:var(--orange)}
.hero .tip{font-size:13px;opacity:.9;margin-top:14px}
section{padding:44px 0}
section h2{font-size:26px;margin:0 0 6px;text-align:center}
section .sub{text-align:center;color:var(--gray);margin:0 0 28px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:0 2px 10px rgba(0,0,0,.04)}
.card .ic{font-size:34px}
.card h3{font-size:18px;margin:10px 0 6px}
.card p{margin:0;color:var(--gray);font-size:14.5px}
.tag{display:inline-block;font-size:12px;padding:2px 10px;border-radius:20px;margin-top:10px}
.tag.free{background:#dcfce7;color:#15803d}
.tag.pay{background:#ffedd5;color:#c2410c}
table.price{width:100%;border-collapse:collapse;background:#fff;border-radius:14px;overflow:hidden;box-shadow:0 2px 10px rgba(0,0,0,.04)}
table.price th,table.price td{padding:14px 16px;text-align:center;border-bottom:1px solid var(--line);font-size:15px}
table.price th{background:#f1f5f9;color:var(--ink);font-weight:700}
table.price tr:last-child td{border-bottom:0}
.hot{color:var(--orange);font-weight:700}
.case{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 22px;margin-bottom:14px}
.case h3{margin:0 0 6px;font-size:18px}
.case p{margin:0;color:var(--gray)}
.dlbox{background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px;text-align:center;max-width:560px;margin:0 auto}
.dlbox .v{color:var(--gray);font-size:14px;margin:6px 0 20px}
.qrbox{display:flex;gap:26px;align-items:center;justify-content:center;flex-wrap:wrap}
.qr{width:180px;height:180px;border:1px solid var(--line);border-radius:12px;display:flex;align-items:center;justify-content:center;color:var(--gray);font-size:13px;background:#fff;text-align:center;padding:10px}
footer{background:#0f172a;color:#94a3b8;padding:26px 0;font-size:13px;text-align:center}
footer a{color:#cbd5e1}
.faq{max-width:760px;margin:0 auto}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin-bottom:10px}
.faq summary{font-weight:700;cursor:pointer;font-size:16px}
.faq p{color:var(--gray);margin:10px 0 0}
.note{background:#fff7ed;border:1px solid #fed7aa;color:#9a3412;border-radius:12px;padding:14px 18px;font-size:14px;margin:18px 0}
.center{text-align:center}
@media(max-width:820px){.grid{grid-template-columns:1fr 1fr}.hero h1{font-size:26px}}
@media(max-width:560px){.grid{grid-template-columns:1fr}.nav a.m{display:none}}

.gt{font-size:17px;font-weight:800;color:var(--ink);margin:30px 0 14px;display:flex;align-items:center;gap:10px;padding-bottom:8px;border-bottom:2px solid var(--line)}
.gt:first-of-type{margin-top:4px}
.gt .pill{font-size:12.5px;font-weight:600;padding:3px 12px;border-radius:20px}
.gt .pill.f{background:#dcfce7;color:#15803d}
.gt .pill.p{background:#ffedd5;color:#c2410c}
img.qr{object-fit:contain;padding:0}