:root{--navy:#0f2b52;--ink:#14213d;--blue:#1d5fa8;--blue-l:#e8f0fb;--accent:#e07b00;--green:#16794a;--green-l:#e3f4ea;--amber-l:#fff3dc;--red:#b42318;--bg:#f4f6f9;--card:#fff;--line:#dde3ec;--muted:#5b6b80;--r:10px;--sh:0 1px 2px rgba(15,43,82,.06),0 4px 14px rgba(15,43,82,.06);--mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:16px/1.55 Inter,-apple-system,"Segoe UI",Roboto,"Helvetica Neue","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.2;color:var(--navy);letter-spacing:-.01em}
h1{font-size:clamp(1.6rem,3.6vw,2.4rem);margin:.2em 0 .4em}h2{font-size:1.45rem;margin:1.6em 0 .6em}h3{font-size:1.08rem;margin:.3em 0}
.h3{font-size:1.15rem}.h4{font-size:1.02rem;margin:0 0 .6em}
.wrap{max-width:1180px;margin:0 auto;padding:0 16px}.narrow{max-width:760px}.pad{padding-top:24px;padding-bottom:32px}.pad-in{padding:20px}.center{text-align:center}
.muted{color:var(--muted)}.small{font-size:.875rem}.mono{font-family:var(--mono);font-size:.9rem}
.lead{font-size:1.1rem;color:#3a4a60;max-width:62ch}
.preview-bar{background:var(--amber-l);color:#7a4a00;text-align:center;font-size:.85rem;padding:6px 12px;border-bottom:1px solid #f1d39b}
.topbar{background:var(--navy);color:#fff}
.topbar-in{display:flex;align-items:center;gap:16px;min-height:60px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:8px;color:#fff;font-size:1.15rem;white-space:nowrap}.logo:hover{text-decoration:none}.logo b{color:#ffb547}
.logo-mark{display:inline-grid;place-items:center;width:32px;height:32px;border-radius:8px;background:#ffb547;color:var(--navy);font-weight:800}
.logo-foot{color:var(--navy)}.logo-foot b{color:var(--accent)}
.topsearch{flex:1;min-width:180px;max-width:420px}
.topsearch input{width:100%;padding:9px 12px;border-radius:8px;border:0;background:rgba(255,255,255,.12);color:#fff;font-size:.95rem}
.topsearch input::placeholder{color:#c6d3e6}
.toplinks{display:flex;gap:14px;align-items:center;margin-left:auto;flex-wrap:wrap}
.toplinks a{color:#dfe8f5;font-size:.95rem}.toplinks a:hover{color:#fff}.toplinks .lang{border:1px solid rgba(255,255,255,.3);border-radius:6px;padding:2px 8px}
.catnav{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.catnav-in{display:flex;gap:4px;overflow-x:auto;scrollbar-width:thin;white-space:nowrap}
.catnav a{padding:11px 10px;color:#33445c;font-size:.9rem;border-bottom:2px solid transparent}
.catnav a:hover{text-decoration:none;color:var(--navy)}.catnav a[aria-current]{border-bottom-color:var(--accent);color:var(--navy);font-weight:600}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 18px;border-radius:8px;border:1px solid var(--navy);background:var(--navy);color:#fff;font:600 .95rem/1.2 inherit;cursor:pointer;text-decoration:none}
.btn:hover{text-decoration:none;background:#16396b}.btn-sm{padding:7px 12px;font-size:.85rem}
.toplinks .btn{background:#ffb547;color:var(--navy);border-color:#ffb547}
.btn-ghost{background:#fff;color:var(--navy)}.btn-ghost:hover{background:var(--blue-l)}
.btn-danger{background:var(--red);border-color:var(--red)}
.badge{display:inline-block;font:700 .68rem/1 inherit;letter-spacing:.06em;padding:5px 7px;border-radius:5px;vertical-align:middle}
.b-free{background:var(--green-l);color:var(--green)}.b-premium{background:var(--navy);color:#ffd28a}.b-sub{background:var(--amber-l);color:#8a5200}.b-soon{background:#eef1f5;color:#56657a}
.hero{background:linear-gradient(transparent 0 0),var(--navy);color:#fff;padding:48px 0 40px;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:28px 28px}
.hero h1{color:#fff;max-width:20ch}.hero .lead{color:#d2deef}
.bigsearch{display:flex;gap:8px;max-width:640px;margin:22px 0 14px}
.bigsearch input{flex:1;padding:14px 16px;border-radius:10px;border:0;font-size:1.05rem;min-width:0}
.bigsearch .btn{background:#ffb547;color:var(--navy);border-color:#ffb547;padding:0 22px}
.hero-chips{display:flex;flex-wrap:wrap;gap:8px}.hero-chips a{color:#fff;border:1px solid rgba(255,255,255,.3);padding:5px 10px;border-radius:20px;font-size:.88rem}
.grid{display:grid;gap:16px}.g2{grid-template-columns:repeat(auto-fill,minmax(320px,1fr))}.g3{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}.g4{grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh)}
.calc-card{display:block;padding:16px;color:inherit;transition:border-color .15s,transform .15s}
a.calc-card:hover{border-color:var(--blue);text-decoration:none;transform:translateY(-1px)}
.calc-card p{margin:.4em 0;font-size:.9rem;color:#46566c}.calc-card .meta{font-size:.8rem;color:var(--muted)}
.calc-card.is-planned{opacity:.78;box-shadow:none}
.card-top{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:6px}
.band{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.prof-card{display:flex;justify-content:space-between;align-items:center;padding:16px;color:var(--navy)}.prof-card:hover{text-decoration:none;border-color:var(--blue)}
.why h3{color:var(--navy)}.why p{color:#46566c;font-size:.95rem}
.popular{columns:2 260px;padding-left:20px}.popular li{margin:.3em 0}
.example{padding:18px}.example.wide{margin:24px 0}.example pre{white-space:pre-wrap;background:#f7f9fc;border:1px solid var(--line);padding:12px;border-radius:8px;margin:8px 0 0}
.pricing{margin-bottom:20px}.price-card{padding:20px;display:flex;flex-direction:column;gap:6px}.price-card.featured{border:2px solid var(--navy)}
.price{font-size:1.8rem;font-weight:800;color:var(--navy)}.price small{font-size:.9rem;font-weight:500;color:var(--muted)}
.ticks{list-style:none;padding:0;margin:6px 0 12px}.ticks li{padding-left:22px;position:relative;margin:4px 0;font-size:.93rem}.ticks li:before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:700}
.warn{color:#8a5200}.notice{background:var(--blue-l);border:1px solid #c9dbf3;padding:12px 14px;border-radius:8px}.notice.warn{background:var(--amber-l);border-color:#f1d39b}.notice p{margin:0 0 8px}
mark.pending{background:var(--amber-l);color:#8a5200;padding:0 4px;border-radius:4px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:8px;margin:8px 0;padding:12px 14px}.faq summary{cursor:pointer;font-weight:600;color:var(--navy)}.faq p{margin:.6em 0 0}
.crumbs{font-size:.85rem;color:var(--muted)}
.filters{display:flex;flex-wrap:wrap;gap:10px;align-items:end;margin:12px 0}
.filters input[type=search]{flex:1;min-width:200px}
.filters label{font-size:.82rem;color:var(--muted);display:flex;flex-direction:column;gap:3px}
input,select,textarea{font:inherit;padding:9px 11px;border:1px solid #c7d1de;border-radius:8px;background:#fff;color:var(--ink);max-width:100%}
input:focus,select:focus,textarea:focus{outline:2px solid #9cc0ee;border-color:var(--blue)}
textarea{width:100%}
.calc-head{display:flex;justify-content:space-between;gap:12px;align-items:center;flex-wrap:wrap}
.calc-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:20px;align-items:start;margin-top:12px}
.calc-main{padding:20px}.calc-side{display:flex;flex-direction:column;gap:16px}.calc-side .card{padding:16px}
.disclaimer{background:#fbfcfe;color:#46566c}
.fld{display:flex;flex-direction:column;gap:4px;margin:0 0 12px;font-size:.88rem;color:#33445c}
.fld>span:first-child{font-weight:600}.fld input,.fld select{width:100%}
.fgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:0 14px}
.inunit{display:flex;align-items:stretch}.inunit input{border-radius:8px 0 0 8px;min-width:0}
.inunit em{font-style:normal;display:flex;align-items:center;padding:0 10px;background:#eef2f7;border:1px solid #c7d1de;border-left:0;border-radius:0 8px 8px 0;font-size:.82rem;color:#46566c;white-space:nowrap}
details.opt{border:1px dashed #c7d1de;border-radius:8px;padding:10px 12px;margin:0 0 12px}details.opt summary{cursor:pointer;font-size:.9rem;color:var(--navy);font-weight:600}details.opt .fgrid{margin-top:10px}
.actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-top:8px}
.err{color:var(--red);font-weight:600;margin:10px 0 0}
.results{margin-top:20px;border-top:1px solid var(--line);padding-top:16px}
.rgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px;margin-bottom:14px}
.rbox{background:#f7f9fc;border:1px solid var(--line);border-radius:8px;padding:10px 12px}.rbox span{display:block;font-size:.78rem;color:var(--muted)}.rbox b{font-size:1.15rem;color:var(--navy);font-variant-numeric:tabular-nums}
.diagram{width:100%;height:auto;display:block;margin:6px 0 14px;background:#fff;border:1px solid var(--line);border-radius:8px}
.bigresult{font-size:1.6rem;font-weight:700;color:var(--navy);margin:10px 0;font-variant-numeric:tabular-nums;word-break:break-word}
table{width:100%;border-collapse:collapse;font-size:.9rem}th,td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line);vertical-align:top}th{background:#f4f6f9;font-weight:600;color:#33445c;white-space:nowrap}
td{font-variant-numeric:tabular-nums}.tablewrap{overflow-x:auto;margin:8px 0 16px}
.kv{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;margin:0 0 12px}.kv dt{color:var(--muted);font-size:.88rem}.kv dd{margin:0}
.stack{display:flex;flex-direction:column;gap:6px}.check{display:block;margin:6px 0}
.tight{padding-left:18px;margin:0 0 10px}.tight li{margin:3px 0}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.agree{display:block;width:100%;margin-top:6px}
.paymethods{display:flex;flex-wrap:wrap;gap:10px}
.admin .adminnav{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:8px}.adminnav a{padding:6px 10px;border-radius:6px;background:#fff;border:1px solid var(--line);font-size:.88rem}.adminnav a[aria-current]{background:var(--navy);color:#fff;border-color:var(--navy)}
.stat{padding:14px}.stat b{display:block;font-size:1.5rem;color:var(--navy)}
.checks{list-style:none;padding:0}.checks li{padding:4px 0}.checks .ok{color:var(--green)}.checks .no{color:#8a5200}
.legal h2{font-size:1.15rem}.legal li{margin:4px 0}
.footer{background:#fff;border-top:1px solid var(--line);margin-top:40px}
.footer-in{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:20px;padding:28px 16px}
.footer-in a{display:block;font-size:.88rem;margin:4px 0;color:#33445c}
.foot-bottom{padding-bottom:24px}
code{background:#eef2f7;padding:1px 5px;border-radius:4px;font-size:.88em}
@media (max-width:900px){.calc-layout{grid-template-columns:1fr}.footer-in{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.topsearch{order:3;max-width:none;flex-basis:100%;margin-bottom:10px}.toplinks{gap:10px}.toplinks a{font-size:.85rem}.hero{padding:32px 0 28px}.bigsearch{flex-direction:column}.bigsearch .btn{padding:12px}.footer-in{grid-template-columns:1fr}.calc-main{padding:16px}}
@media print{.topbar,.catnav,.footer,.preview-bar,.noprint{display:none}body{background:#fff}.card{box-shadow:none}}