:root{--bg:#f6f7fb;--fg:#1c2433;--mut:#4d586b;--card:#fff;--brand:#263c5c;--acc:#3b6fd4;--line:#dde1ea;--ok:#1a7f4b;--no:#a3acbb;--hero1:#1d2f4a;--hero2:#34507a;--onacc:#fff}
@media(prefers-color-scheme:dark){:root{--bg:#10141c;--fg:#e8ebf2;--mut:#a9b4c6;--card:#181e2a;--brand:#9db8e8;--acc:#7aa2ec;--line:#2a3243;--ok:#5fd39a;--no:#5b6577;--hero1:#0d1626;--hero2:#22385a;--onacc:#0d1626}}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 system-ui,-apple-system,"Segoe UI","PingFang TC","Hiragino Sans","Noto Sans","Microsoft JhengHei",sans-serif}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:#fff;color:#000;padding:8px 12px;z-index:10}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}.narrow{max-width:820px}
.top{position:sticky;top:0;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);z-index:5}
.bar{display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center;justify-content:space-between;padding-top:10px;padding-bottom:10px}
.brand{display:block;background:#fff;border-radius:12px;padding:4px 10px;line-height:0}.brand img{height:40px;width:auto}
nav{display:flex;flex-wrap:wrap;align-items:center;gap:4px 16px;font-size:15px}nav a{color:var(--fg);text-decoration:none;padding:6px 2px}nav a:hover{color:var(--acc);text-decoration:underline}
nav a.navdl{background:var(--acc);color:var(--onacc);border-radius:99px;padding:6px 16px;font-weight:700}nav a.navdl:hover{text-decoration:none;filter:brightness(1.08);color:var(--onacc)}
.langsel{position:relative}.langsel summary{list-style:none;display:flex;align-items:center;gap:2px;cursor:pointer;padding:6px 10px;border:1px solid var(--line);border-radius:99px;font-size:14px;background:var(--card);user-select:none}
.langsel summary::-webkit-details-marker{display:none}.langsel .caret{width:18px;height:18px;fill:currentColor}.langsel[open] summary{border-color:var(--acc)}
.langsel .langs{position:absolute;right:0;top:calc(100% + 6px);display:grid;gap:0;min-width:170px;padding:6px;background:var(--card);border:1px solid var(--line);border-radius:12px;box-shadow:0 12px 30px rgba(0,0,0,.15);z-index:20}
.langsel .langs a{padding:8px 12px;border-radius:8px;color:var(--fg);text-decoration:none;font-size:15px}.langsel .langs a:hover{background:color-mix(in srgb,var(--acc) 12%,transparent)}.langsel .langs a[aria-current]{font-weight:700;color:var(--acc)}
.hero{padding:64px 0 56px;background:radial-gradient(1200px 500px at 80% -10%,#3b6fd455,transparent),linear-gradient(135deg,var(--hero1),var(--hero2));color:#fff;overflow:hidden}
.herogrid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:40px;align-items:center}
.badges{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:0 0 20px}.badges li{background:rgba(255,255,255,.14);border-radius:99px;padding:4px 14px;font-size:14px}
h1{font-size:clamp(30px,5vw,50px);line-height:1.15;margin:0 0 16px}.lead{font-size:clamp(17px,2.1vw,20px);opacity:.95;margin:0 0 28px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:11px 24px;border-radius:99px;border:2px solid currentColor;font:inherit;font-weight:700;text-decoration:none;cursor:pointer;background:transparent;color:inherit;text-align:center}
.btn small{font-weight:400;opacity:.8}
.btn.primary{background:#fff;color:#1d2f4a;border-color:#fff}.btn.big{font-size:19px;padding:15px 34px;min-height:58px;box-shadow:0 10px 30px rgba(0,0,0,.25)}
.btn.solid{background:var(--acc);color:var(--onacc);border-color:var(--acc);width:100%;flex-direction:column;gap:0;line-height:1.3}.btn.solid small{font-size:12px}.form .btn.primary{background:var(--brand);color:var(--bg);border-color:var(--brand)}
.btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #f5a524;outline-offset:2px}
.dlbox .meta{margin:12px 0 4px;font-size:14px;opacity:.85}.dlbox .alt{margin:0;font-size:14px}.dlbox .alt a{color:#fff}.dlbox .note{margin:8px 0 0;font-size:14px;background:rgba(255,255,255,.12);border-radius:10px;padding:8px 12px}
.mock{background:#0f1726;border:1px solid rgba(255,255,255,.18);border-radius:16px;box-shadow:0 30px 60px rgba(0,0,0,.35);overflow:hidden;transform:perspective(1200px) rotateY(-6deg)}
.mbar{display:flex;gap:6px;padding:10px 12px;background:#1b2538}.mbar i{width:11px;height:11px;border-radius:50%;background:#ff5f57}.mbar i+i{background:#febc2e}.mbar i+i+i{background:#28c840}
.mtabs{display:flex;gap:4px;padding:8px 10px;background:#263c5c;font-size:12px;flex-wrap:wrap}.mtabs span{padding:4px 10px;border-radius:99px;border:1px solid rgba(255,255,255,.3);color:#dfe7f5;white-space:nowrap}.mtabs span.on{background:#fff;color:#263c5c}
.mbody{padding:16px;background:#f3f5fa;color:#1c2433}.mstats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.mstats div{background:#e6eaf2;border-radius:10px;padding:8px 10px;min-width:0}.mstats small{display:block;font-size:11px;color:#4d586b}.mstats b{font-size:13px;display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mchart{display:flex;align-items:flex-end;gap:8px;height:110px;margin-top:14px;padding:0 4px;border-bottom:2px solid #cfd6e3}.mchart span{flex:1;background:linear-gradient(#3b6fd4,#5d8be0);border-radius:6px 6px 0 0}.mchart span:nth-child(3){background:linear-gradient(#7c5cd6,#9b80e8)}
.sec{padding:60px 0}.sec.alt{background:color-mix(in srgb,var(--card) 70%,var(--bg))}
h2{font-size:clamp(24px,3.6vw,34px);line-height:1.25;margin:0 0 6px;color:var(--brand)}.mt{margin-top:44px}.sub{color:var(--mut);margin:0 0 24px}
.plats{display:grid;gap:16px;grid-template-columns:repeat(3,minmax(0,1fr))}.plat{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px;display:flex;flex-direction:column;gap:8px}
.plat h3{margin:0;font-size:20px}.plat p{margin:0 0 8px;color:var(--mut);flex:1}.plat .pi svg{width:40px;height:40px;fill:var(--acc)}.plat.web{border-style:dashed}.plat.web .pi svg{fill:var(--mut)}
.plat.mine{border-color:var(--acc);box-shadow:0 0 0 3px color-mix(in srgb,var(--acc) 25%,transparent)}
.unsigned{margin:4px 0 0;font-size:13px;color:var(--mut);flex:0}.ic{width:16px;height:16px;fill:currentColor;vertical-align:-3px;margin-right:4px}.oss{margin:16px 0 0;color:var(--mut)}.oss a,.foot a{color:var(--acc)}.early{margin:16px 0 0;padding:12px 16px;border-radius:12px;background:color-mix(in srgb,var(--acc) 12%,var(--card));border:1px solid color-mix(in srgb,var(--acc) 35%,var(--line))}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px}.card h3{margin:0 0 8px;font-size:18px}.card p{margin:0;color:var(--mut)}
.grid .card:first-child{border-color:var(--acc)}
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:var(--card)}
.cmp{width:100%;border-collapse:collapse;font-size:15px}.cmp th,.cmp td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}.cmp tbody tr:last-child th,.cmp tbody tr:last-child td{border-bottom:0}
.cmp thead th{font-size:14px;color:var(--mut)}.cmp thead th.app{color:var(--acc)}.cmp td{text-align:center;width:22%}.cmp thead th+th{text-align:center}.cmp th[scope=row]{font-weight:500}
.cmp svg{width:22px;height:22px;vertical-align:middle}.cmp td.y svg{fill:var(--ok)}.cmp td.n svg{fill:var(--no)}
.req{display:grid;gap:0;margin:16px 0 0;border:1px solid var(--line);border-radius:14px;background:var(--card);overflow:hidden}.req div{display:grid;grid-template-columns:140px 1fr;gap:12px;padding:12px 16px;border-bottom:1px solid var(--line)}.req div:last-child{border-bottom:0}.req dt{font-weight:700}.req dd{margin:0;color:var(--mut)}
.steps{counter-reset:s;list-style:none;padding:0;margin:20px 0 0;display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.steps li{counter-increment:s;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 18px 18px 58px;position:relative}
.steps li:before{content:counter(s);position:absolute;left:16px;top:16px;width:30px;height:30px;border-radius:50%;background:var(--brand);color:var(--bg);display:grid;place-items:center;font-weight:700}
.steps b{display:block;margin-bottom:4px}.steps span{color:var(--mut)}
.who{display:flex;flex-wrap:wrap;gap:10px;list-style:none;padding:0;margin:14px 0 0}.who li{background:var(--card);border:1px solid var(--line);border-radius:99px;padding:6px 16px}
#faq details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:4px 18px;margin:0 0 10px}#faq summary{cursor:pointer;font-weight:600;padding:12px 0}#faq details p{margin:0 0 14px;color:var(--mut)}
.form{display:grid;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px}.form label{display:grid;gap:4px;font-size:14px;color:var(--mut)}
.form small{font-weight:400}.form input,.form select,.form textarea{font:inherit;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--fg);width:100%}
.hp{position:absolute;left:-9999px;height:0;overflow:hidden}.status{min-height:1.5em;margin:0;font-weight:600}.status.ok{color:#1a7f4b}.status.err{color:#c0392b}
.foot{padding:28px 0 40px;color:var(--mut);font-size:14px;border-top:1px solid var(--line)}.foot p{margin:4px 0}
@media(max-width:900px){.herogrid{grid-template-columns:1fr}.mock{transform:none;max-width:520px}.plats{grid-template-columns:1fr}}
@media(max-width:640px){.top{position:static}.brand img{height:32px}nav{gap:2px 12px;font-size:14px}nav a{padding:4px 0}nav a.navdl{padding:4px 14px}.hero{padding:28px 0 36px}.bar{gap:4px 12px}.btn.big{width:100%}.req div{grid-template-columns:1fr;gap:2px}.cmp th,.cmp td{padding:10px 8px}.mtabs span:nth-child(-n+2){display:none}}