:root{color-scheme:light;--b:#175cd3;--b2:#0b1f3a;--bg:#f6f8fb;--fg:#1b1f24;--mut:#5b656f;--ln:#dfe3e8;--ln-ctl:#8c959f;--ok:#1e7e34;--warn:#7a5200;--bad:#b42318;--card:#fff;--track:#d0d7de;--tagbg:#e8f0ff}
@media (prefers-color-scheme:dark){:root{color-scheme:dark;--b:#4c8dff;--b2:#dbe6ff;--bg:#0f1419;--fg:#e6edf3;--mut:#9aa4ae;--ln:#30363d;--ln-ctl:#6e7781;--card:#161b22;--track:#30363d;--tagbg:#1c2a44;--ok:#3fb950;--warn:#d29922;--bad:#f85149}}
*{box-sizing:border-box}html,body{margin:0;padding:0}
body{font:15px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;color:var(--fg);background:var(--bg);padding-bottom:env(safe-area-inset-bottom)}
button,input,select,textarea{font:inherit;line-height:inherit;color:inherit}
a{color:var(--b);text-decoration:none}a:hover{text-decoration:underline}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.ah{position:sticky;top:0;z-index:10;background:var(--card);border-bottom:1px solid var(--ln);padding-top:env(safe-area-inset-top)}
.ah .in{max-width:960px;margin:0 auto;display:flex;align-items:center;gap:10px;padding:6px max(14px,env(safe-area-inset-right)) 6px max(14px,env(safe-area-inset-left))}
.ah .logo{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--b2);white-space:nowrap;min-height:44px}
.ah .logo i{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:7px;background:var(--b);color:#fff;font-style:normal;font-size:12px;font-weight:800}
.ah nav{margin-left:auto;display:flex;gap:2px;flex-wrap:wrap}
.ah nav a{display:inline-flex;align-items:center;min-height:44px;padding:8px 10px;border-radius:8px;color:var(--fg);font-size:14px}
.ah nav a.on,.ah nav a:hover{background:var(--bg);text-decoration:none}
.ah .lang{min-width:44px;min-height:44px;border:1px solid var(--ln-ctl);border-radius:8px;padding:8px 12px;font-size:13px;cursor:pointer;background:var(--card);color:var(--mut)}
main{max-width:960px;margin:0 auto;padding:16px max(14px,env(safe-area-inset-right)) 48px max(14px,env(safe-area-inset-left))}
.hero{background:linear-gradient(135deg,#0b1f3a,#163a6b);color:#fff;border-radius:16px;padding:28px 20px;margin-bottom:16px}
.hero h1{margin:0 0 6px;font-size:22px}.hero p{margin:0 0 14px;opacity:.9;font-size:14px}
.sbox{display:flex;gap:8px}.sbox input{flex:1;min-width:0;border:0;border-radius:10px;padding:12px 14px;font-size:16px;background:#fff;color:#1b1f24}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:0;border-radius:10px;padding:11px 16px;min-height:44px;font-size:15px;font-weight:600;cursor:pointer;background:var(--b);color:#fff;text-decoration:none!important}
.btn.sec{background:var(--card);color:var(--b);border:1px solid var(--b)}.btn.ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.6)}
.btn.sm{padding:7px 12px;font-size:13px;min-height:36px}.btn[disabled],.btn[aria-disabled=true]{opacity:.5;cursor:default}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin:14px 0}
.stat{background:var(--card);border:1px solid var(--ln);border-radius:12px;padding:12px 14px}
.stat b{display:block;font-size:22px;color:var(--b2)}.stat span{font-size:13px;color:var(--mut)}
.card{background:var(--card);border:1px solid var(--ln);border-radius:14px;padding:16px;margin:12px 0}
.card h1,.card h2{margin:0 0 10px;font-size:17px}.card h3{margin:14px 0 6px;font-size:15px}
.mut{color:var(--mut);font-size:13px}.ok{color:var(--ok)}.warn{color:var(--warn)}.bad{color:var(--bad)}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.tag{display:inline-block;padding:1px 8px;border-radius:999px;font-size:13px;background:var(--tagbg);color:var(--b)}
.tag.free{background:var(--bg);color:var(--mut)}.tag.pro{background:#e6f4ea;color:#1e7e34}.tag.team{background:#fff4e0;color:#7a5200}.tag.enterprise{background:#f0e6ff;color:#5b2ca0}
@media (prefers-color-scheme:dark){.tag.pro{background:#12301c;color:#3fb950}.tag.team{background:#3a2a00;color:#d29922}.tag.enterprise{background:#2a1a4a;color:#c9a7ff}}
form label{display:block;font-size:13px;color:var(--mut);margin:10px 0 4px}
form input[type=text],form input[type=email],form input[type=password],form textarea,form select{width:100%;border:1px solid var(--ln-ctl);border-radius:10px;padding:11px 12px;font-size:16px;background:var(--card);color:var(--fg)}
form input:focus-visible,.btn:focus-visible,.lang:focus-visible,a:focus-visible{outline:3px solid #7fb0ff;outline-offset:2px}
form .chk{display:flex;gap:8px;align-items:flex-start;font-size:13px;margin:10px 0}form .chk input{margin-top:4px;width:18px;height:18px}
form small{display:block;color:var(--mut);font-size:12px;margin-top:4px}
.msg{border-radius:10px;padding:10px 12px;font-size:14px;margin:10px 0}.msg:empty{display:none}
.msg.ok{background:#e6f4ea;color:#1e7e34}.msg.err{background:#fde8e8;color:#b42318}.msg.info{background:var(--tagbg);color:var(--b2)}
@media (prefers-color-scheme:dark){.msg.ok{background:#12301c;color:#3fb950}.msg.err{background:#3d1416;color:#ff7b72}}
.bar{height:8px;border-radius:999px;background:var(--track);overflow:hidden;margin:4px 0 2px}.bar i{display:block;height:100%;background:var(--b)}
.bar i.warn{background:#d29922}.bar i.bad{background:var(--bad)}
table{width:100%;border-collapse:collapse;font-size:13px}th,td{text-align:left;padding:8px 6px;border-bottom:1px solid var(--ln);vertical-align:top}th{color:var(--mut);font-weight:600}
.scroll{overflow:auto}.scroll:focus-visible{outline:3px solid #7fb0ff}
.tiers{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px}
.tier{border:1px solid var(--ln);border-radius:14px;padding:16px;background:var(--card);display:flex;flex-direction:column}
.tier.hi{border-color:var(--b);box-shadow:0 0 0 2px rgba(23,92,211,.18)}
.tier .nm{font-weight:700;font-size:16px;margin:0}.tier .pr{font-size:18px;color:var(--b2);margin:6px 0}.tier .pr small{font-size:12px;color:var(--mut)}
.tier ul{padding-left:18px;margin:8px 0 12px;font-size:13px;color:var(--fg);flex:1}.tier li{margin:3px 0}
.steps{counter-reset:s;padding-left:0}.steps li{counter-increment:s;position:relative;padding-left:34px;margin:8px 0;font-size:14px;list-style:none}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:24px;height:24px;border-radius:50%;background:var(--b);color:#fff;font-size:12px;display:grid;place-items:center}
.qr{display:flex;gap:16px;align-items:center;flex-wrap:wrap}.qr img{width:150px;height:150px;border:1px solid var(--ln);border-radius:10px;background:#fff;padding:6px}
.foot{max-width:960px;margin:0 auto;padding:16px max(14px,env(safe-area-inset-right)) 32px max(14px,env(safe-area-inset-left));font-size:12px;color:var(--mut)}
.hide{display:none!important}
@media (max-width:520px){.hero{padding:22px 16px}.tiers{grid-template-columns:1fr}.ah nav a{padding:8px 8px;font-size:13px}}