:root{--p:#1e3a8a;--p2:#2563eb;--acc:#f59e0b;--bg:#f8fafc;--card:#fff;--t:#0f172a;--m:#64748b;--b:#e2e8f0;--r:14px}
*{box-sizing:border-box}body{margin:0;font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;background:var(--bg);color:var(--t);line-height:1.65}
a{color:var(--p2)}.wrap{max-width:1120px;margin:0 auto;padding:0 16px}
header{background:#fff;border-bottom:1px solid var(--b);position:sticky;top:0;z-index:10}
.nav{display:flex;align-items:center;justify-content:space-between;height:58px}.logo{font-weight:800;color:var(--p);text-decoration:none;font-size:1.15rem}
.logo span{color:var(--acc)}.menu{display:none;gap:4px}.menu a{text-decoration:none;color:var(--t);padding:8px 10px;border-radius:8px;font-size:.95rem}.menu a.on,.menu a:hover{background:#eff6ff;color:var(--p2)}
.burger{background:none;border:1px solid var(--b);border-radius:8px;padding:6px 10px;font-size:1.1rem}
.drawer{display:none;flex-direction:column;padding:8px 16px 16px;border-top:1px solid var(--b)}.drawer.open{display:flex}.drawer a{padding:10px 4px;text-decoration:none;color:var(--t);border-bottom:1px solid var(--b)}
.lang{font-size:.8rem;color:var(--m);border:1px solid var(--b);border-radius:20px;padding:3px 10px;background:#fff}
@media(min-width:900px){.menu{display:flex}.burger{display:none}.drawer{display:none!important}}
.hero{background:linear-gradient(135deg,#1e3a8a,#2563eb);color:#fff;padding:48px 0 56px}.hero h1{font-size:1.9rem;line-height:1.3;margin:0 0 12px}.hero p{opacity:.92;max-width:640px}
@media(min-width:900px){.hero{padding:80px 0}.hero h1{font-size:2.8rem}}
.btn{display:inline-block;padding:12px 20px;border-radius:10px;background:var(--acc);color:#111;font-weight:700;text-decoration:none;border:0;cursor:pointer;font-size:1rem}.btn.ghost{background:transparent;color:#fff;border:1px solid #fff9}.btn.sec{background:#eff6ff;color:var(--p2)}
.grid{display:grid;gap:14px;grid-template-columns:1fr}@media(min-width:640px){.g2{grid-template-columns:1fr 1fr}.g3{grid-template-columns:1fr 1fr}}@media(min-width:900px){.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}}
.card{background:var(--card);border:1px solid var(--b);border-radius:var(--r);padding:18px}.card h3{margin:0 0 6px;font-size:1.08rem}.muted{color:var(--m);font-size:.9rem}
section.s{padding:36px 0}h2{font-size:1.45rem;margin:0 0 14px}
.tag{display:inline-block;font-size:.75rem;background:#eff6ff;color:var(--p2);border-radius:20px;padding:2px 9px;margin:2px 4px 2px 0}
.note{background:#fffbeb;border:1px solid #fde68a;border-radius:12px;padding:12px 14px;font-size:.92rem}
footer{border-top:1px solid var(--b);padding:28px 0;color:var(--m);font-size:.85rem;background:#fff;margin-top:40px}
.q{margin:14px 0}.q label{display:block;font-weight:600;margin-bottom:6px}select,input,textarea{width:100%;padding:11px;border:1px solid var(--b);border-radius:10px;font-size:1rem;background:#fff;font-family:inherit}
.chips{display:flex;flex-wrap:wrap;gap:8px}.chip{border:1px solid var(--b);border-radius:20px;padding:7px 13px;background:#fff;cursor:pointer;font-size:.92rem}.chip.on{background:var(--p2);color:#fff;border-color:var(--p2)}
.lk{display:flex;gap:6px}.lk button{flex:1;padding:8px 0;border:1px solid var(--b);background:#fff;border-radius:8px;cursor:pointer;font-size:.8rem}.lk button.on{background:var(--p2);color:#fff}
.prog{height:8px;background:var(--b);border-radius:8px;overflow:hidden;position:sticky;top:58px}.prog i{display:block;height:100%;background:var(--acc);width:0;transition:.3s}
.bar{margin:8px 0}.bar .l{display:flex;justify-content:space-between;font-size:.9rem}.bar .t{height:12px;background:#e2e8f0;border-radius:8px;overflow:hidden}.bar .t i{display:block;height:100%;background:linear-gradient(90deg,#60a5fa,#1e3a8a)}
table{width:100%;border-collapse:collapse;font-size:.9rem}th,td{border-bottom:1px solid var(--b);padding:9px 6px;text-align:left;vertical-align:top}
.steps{counter-reset:s;list-style:none;padding:0}.steps li{counter-increment:s;position:relative;padding:0 0 16px 44px}.steps li:before{content:counter(s);position:absolute;left:0;top:0;width:30px;height:30px;border-radius:50%;background:var(--p2);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.tabs{display:flex;gap:6px;overflow-x:auto;margin-bottom:12px}.tabs button{white-space:nowrap}
.stat{font-size:1.6rem;font-weight:800;color:var(--p)}