:root { --ink:#15213f; --muted:#59637a; --primary:#3346b5; --primary-dark:#25348f; --paper:#f7f9ff; --line:#dfe4ef; --green:#106348; --danger:#9b3434; }
* { box-sizing:border-box; }
body { margin:0; color:var(--ink); background:radial-gradient(circle at 10% 0,rgba(80,103,217,.12),transparent 28rem),var(--paper); font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif; line-height:1.6; }
a { color:var(--primary-dark); }
button,input,select,textarea { font:inherit; }
.shell { width:min(1040px,calc(100% - 32px)); margin:0 auto; }
.topbar { display:flex; align-items:center; justify-content:space-between; gap:20px; padding:22px 0; }
.brand { color:var(--ink); font-weight:800; text-decoration:none; }
.toplinks { display:flex; flex-wrap:wrap; gap:16px; }
.toplinks a { text-decoration:none; font-size:14px; font-weight:700; }
.hero { padding:52px 0 30px; }
.hero h1 { margin:0 0 10px; font-size:clamp(34px,6vw,54px); line-height:1.15; }
.hero p { max-width:680px; margin:0; color:var(--muted); }
.grid { display:grid; grid-template-columns:1fr 1fr; gap:20px; padding-bottom:60px; }
.card { padding:26px; background:white; border:1px solid var(--line); border-radius:18px; box-shadow:0 18px 55px rgba(28,41,76,.08); }
.card h2,.card h3 { margin-top:0; }
.stack { display:grid; gap:14px; }
label { display:grid; gap:6px; font-size:14px; font-weight:700; }
input,select,textarea { width:100%; padding:12px 13px; border:1px solid #cdd4e4; border-radius:10px; background:white; }
input:focus,select:focus,textarea:focus { border-color:var(--primary); outline:3px solid rgba(51,70,181,.12); }
textarea { min-height:80px; resize:vertical; }
button,.button { min-height:46px; display:inline-flex; align-items:center; justify-content:center; padding:0 18px; color:white; background:var(--primary); border:0; border-radius:10px; text-decoration:none; font-weight:800; cursor:pointer; }
button:hover,.button:hover { background:var(--primary-dark); }
.button.secondary { color:var(--ink); background:white; border:1px solid var(--line); }
.actions { display:flex; flex-wrap:wrap; gap:10px; }
.message { margin:12px 0 0; color:var(--muted); font-size:14px; }
.message.error { color:var(--danger); }
.message.success { color:var(--green); }
.wide { grid-column:1/-1; }
.orders { display:grid; gap:12px; }
.order { padding:18px; background:#fafbff; border:1px solid var(--line); border-radius:14px; }
.order-head { display:flex; justify-content:space-between; gap:16px; }
.order h3 { margin:0; font-size:17px; }
.order p { margin:6px 0 0; color:var(--muted); font-size:14px; }
.tag { display:inline-flex; padding:3px 9px; color:var(--primary-dark); background:#eef1ff; border-radius:999px; font-size:12px; font-weight:800; white-space:nowrap; }
.code { margin-top:12px; padding:12px; color:var(--green); background:#eef9f5; border:1px solid #cfeade; border-radius:10px; word-break:break-all; }
.admin-grid { display:grid; gap:14px; }
.admin-order { padding:18px; border:1px solid var(--line); border-radius:14px; }
.admin-meta { display:grid; grid-template-columns:repeat(3,1fr); gap:8px; color:var(--muted); font-size:13px; }
.contact-content { margin-top:12px; }
.contact-content summary { cursor:pointer; color:var(--primary-dark); font-weight:800; }
.contact-content pre { max-height:360px; margin:10px 0 0; padding:14px; overflow:auto; white-space:pre-wrap; overflow-wrap:anywhere; background:#f7f9ff; border:1px solid var(--line); border-radius:10px; font:13px/1.6 ui-monospace,SFMono-Regular,Menlo,monospace; }
.faq-page { padding-bottom:60px; }
.faq-intro { max-width:760px; margin:0 0 28px; color:var(--muted); }
.faq-category { margin:0 0 42px; }
.faq-category h2 { margin:0 0 16px; font-size:24px; }
.faq-items { display:grid; gap:12px; }
.faq-items details { padding:18px 20px; background:white; border:1px solid var(--line); border-radius:14px; box-shadow:0 10px 30px rgba(28,41,76,.05); }
.faq-items summary { cursor:pointer; font-weight:800; }
.faq-items p { margin:10px 0 0; color:var(--muted); }
.faq-actions { display:flex; flex-wrap:wrap; gap:10px; margin-top:28px; }
.guide-page { padding-bottom:64px; }
.breadcrumb { margin:18px 0 0; color:var(--muted); font-size:14px; }
.breadcrumb a { text-decoration:none; }
.guide-lead { max-width:780px; color:var(--muted); font-size:18px; }
.guide-toc { display:flex; flex-wrap:wrap; gap:10px; margin:28px 0 48px; }
.guide-toc a { padding:8px 12px; color:var(--primary-dark); background:#eef1ff; border-radius:999px; text-decoration:none; font-size:14px; font-weight:700; }
.guide-section { margin:0 0 52px; scroll-margin-top:20px; }
.guide-section h2 { margin:0 0 12px; font-size:28px; }
.guide-section > p { max-width:820px; color:var(--muted); }
.guide-grid { display:grid; grid-template-columns:1fr 1fr; gap:18px; margin-top:22px; }
.guide-card { padding:24px; background:#fff; border:1px solid var(--line); border-radius:16px; box-shadow:0 12px 35px rgba(28,41,76,.06); }
.guide-card h3 { margin:0 0 8px; }
.guide-card p { margin:0; color:var(--muted); }
.guide-card ul { margin:14px 0 0; padding-left:20px; color:var(--muted); }
.guide-card li + li { margin-top:8px; }
.guide-steps { display:grid; gap:14px; margin-top:22px; }
.guide-step { display:grid; grid-template-columns:44px 1fr; gap:16px; padding:20px; background:#fff; border:1px solid var(--line); border-radius:14px; }
.guide-number { display:grid; place-items:center; width:40px; height:40px; color:#fff; background:var(--primary); border-radius:11px; font-weight:800; }
.guide-step h3 { margin:0 0 5px; }
.guide-step p { margin:0; color:var(--muted); }
.guide-note { margin-top:22px; padding:20px; color:#34405c; background:#fff8e8; border:1px solid #ead6a4; border-radius:14px; }
.guide-note strong { color:var(--ink); }
.guide-actions { display:flex; flex-wrap:wrap; gap:10px; margin-top:26px; }
[hidden] { display:none !important; }
@media (max-width:720px) { .grid,.guide-grid { grid-template-columns:1fr; } .wide { grid-column:auto; } .admin-meta { grid-template-columns:1fr; } .order-head { flex-direction:column; } .guide-step { grid-template-columns:36px 1fr; padding:17px; } .guide-number { width:34px; height:34px; } }