*{box-sizing:border-box}
:root{--bg:#f6f6fb;--card:#fff;--line:#e6e5f0;--text:#171a2c;--muted:#6f7287;--brand:#5b4be0;--brand2:#7d6ff0;--soft:#f0eeff;--ok:#16845b;--ok-soft:#e4f5ed;--warn:#a5650b;--warn-soft:#fff3df;--bad:#c0354f;--bad-soft:#fdecef;--input:#fbfbfe;--code:#f5f5fa}
@media(prefers-color-scheme:dark){:root{--bg:#0f1020;--card:#181a2e;--line:#2a2c45;--text:#ecebff;--muted:#9a9cb8;--brand:#8b7ff7;--brand2:#a99ff9;--soft:#25234a;--ok:#4cc995;--ok-soft:#163328;--warn:#e7a94a;--warn-soft:#3a2c14;--bad:#f07a8f;--bad-soft:#3b1b24;--input:#12142a;--code:#121427}}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:radial-gradient(1200px 500px at 50% -200px,var(--soft),transparent 70%) no-repeat,var(--bg);color:var(--text);font:15px/1.65 Inter,"PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;min-height:100vh}
[hidden]{display:none!important}
a{color:var(--brand)}
.top{max-width:680px;margin:0 auto;padding:22px 24px 0;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px;color:inherit;text-decoration:none;font-weight:750;font-size:16px}
.logo{width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,var(--brand2),#4433c9);box-shadow:0 6px 16px #5b4be040;position:relative}
.logo::after{content:"";position:absolute;inset:9px;border:2.5px solid #fff;border-radius:3px;transform:rotate(45deg)}
.secure{font-size:12px;color:var(--muted);background:var(--card);border:1px solid var(--line);padding:4px 10px;border-radius:99px}
main{max-width:680px;margin:0 auto;padding:0 24px 30px}
.intro{padding:40px 0 22px}
.badge{font-size:11px;font-weight:750;letter-spacing:.2em;color:var(--brand)}
h1{font-size:clamp(32px,7vw,46px);line-height:1.2;letter-spacing:-.04em;margin:14px 0}
h1 em{font-style:normal;background:linear-gradient(90deg,var(--brand),var(--brand2));-webkit-background-clip:text;background-clip:text;color:transparent}
.intro p{color:var(--muted);margin:0;font-size:14.5px}
.panel{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:26px;box-shadow:0 20px 60px #2a1f7a14}
.field-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
label{font-size:14px;font-weight:700}
.chip{font-size:12px;font-weight:650;padding:2px 10px;border-radius:99px;background:var(--soft);color:var(--brand)}
.chip.over{background:var(--bad-soft);color:var(--bad)}
textarea{display:block;font:14px/1.7 ui-monospace,SFMono-Regular,Menlo,monospace;width:100%;min-height:100px;padding:14px 15px;border:1.5px solid var(--line);border-radius:14px;background:var(--input);color:var(--text);resize:vertical;letter-spacing:.02em;transition:border-color .15s,box-shadow .15s}
textarea:focus{outline:0;border-color:var(--brand);box-shadow:0 0 0 4px #5b4be022}
textarea::placeholder{color:var(--muted);opacity:.7}
.field-tools{display:flex;align-items:center;gap:8px;margin-top:10px}
.kbd-hint{margin-left:auto;font-size:11.5px;color:var(--muted)}
button{font:inherit;cursor:pointer;border:1px solid transparent;border-radius:12px;font-weight:650;transition:transform .1s,background .15s,opacity .15s}
button:active{transform:scale(.98)}
button:disabled{opacity:.6;cursor:wait}
.primary{background:linear-gradient(135deg,var(--brand),#4a3bcc);color:#fff;box-shadow:0 8px 20px #5b4be033}
.primary:hover{filter:brightness(1.06)}
#submit{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;padding:15px;margin-top:18px;font-size:16px;position:relative}
#submit .arrow{position:absolute;right:20px;transition:transform .2s}
#submit:hover .arrow{transform:translateX(3px)}
#submit.loading .label::before{content:"";display:inline-block;width:14px;height:14px;margin-right:8px;vertical-align:-2px;border:2px solid #ffffff66;border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.ghost{background:var(--card);color:var(--text);border-color:var(--line);padding:6px 12px;font-size:13px}
.ghost:hover{background:var(--soft)}
.sm{padding:8px 14px;font-size:13px}
#status{margin:16px 0 0;padding:12px 14px;border-radius:12px;background:var(--warn-soft);color:var(--warn);font-size:14px;overflow-wrap:anywhere}
#result{border-top:1px solid var(--line);margin-top:24px;padding-top:22px;animation:rise .25s ease-out}
@keyframes rise{from{opacity:0;transform:translateY(6px)}}
.summary{font-size:18px;font-weight:750}
.summary.ok{color:var(--ok)}.summary.bad{color:var(--bad)}
.chips{display:flex;gap:6px;flex-wrap:wrap;margin-top:6px}
.chips span{font-size:12px;font-weight:650;padding:2px 10px;border-radius:99px}
.c-ok{background:var(--ok-soft);color:var(--ok)}.c-rep{background:var(--soft);color:var(--brand)}.c-bad{background:var(--bad-soft);color:var(--bad)}
.result-actions{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0 6px}
.item{border:1px solid var(--line);border-radius:16px;padding:14px 16px;margin:12px 0;background:var(--card)}
.item.bad{background:var(--bad-soft);border-color:transparent}
.item-head{display:flex;justify-content:space-between;gap:10px;align-items:center}
.item-head code{font:12px/1.5 ui-monospace,monospace;color:var(--muted);overflow-wrap:anywhere}
.tag{font-size:12px;font-weight:700;white-space:nowrap;padding:2px 10px;border-radius:99px}
.tag.ok{background:var(--ok-soft);color:var(--ok)}.tag.rep{background:var(--soft);color:var(--brand)}.tag.bad{background:var(--card);color:var(--bad)}
.meta{margin:6px 0 0;font-size:13px;color:var(--muted)}.meta b{color:var(--text);font-weight:650}
.card{display:flex;gap:10px;align-items:flex-start;margin-top:10px;padding:12px 12px 12px 14px;background:var(--code);border:1px solid var(--line);border-radius:12px}
.card pre{flex:1;margin:0;white-space:pre-wrap;overflow-wrap:anywhere;font:13.5px/1.7 ui-monospace,SFMono-Regular,Menlo,monospace;min-width:0}
.card button{flex:none;padding:4px 10px;font-size:12px}
.err{margin:6px 0 0;color:var(--bad);font-size:13.5px}
.muted{color:var(--muted);font-size:12.5px;margin:14px 0 0}
.steps{list-style:none;padding:0;margin:26px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:12px;counter-reset:s}
.steps li{counter-increment:s;padding:14px;border-radius:16px;border:1px dashed var(--line);font-size:12.5px;color:var(--muted)}
.steps li::before{content:"0" counter(s);display:block;font-weight:800;color:var(--brand);font-size:12px;letter-spacing:.1em;margin-bottom:4px}
.steps b{display:block;color:var(--text);font-size:14px;margin-bottom:2px}
footer{text-align:center;font-size:12px;color:var(--muted);margin:34px 0 10px;line-height:2}
footer span{font-size:10px;letter-spacing:.14em;opacity:.8}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#1d2133;color:#fff;padding:10px 18px;border-radius:12px;font-size:13px;box-shadow:0 12px 40px #11142a40;z-index:9}
@media(max-width:560px){.top{padding:16px 18px 0}main{padding:0 16px 24px}.intro{padding:28px 4px 18px}.panel{padding:20px 18px;border-radius:20px}.kbd-hint{display:none}.steps{gap:8px}.steps li{padding:10px;font-size:11px}.steps li span{display:none}.steps b{font-size:12.5px}.result-actions button{flex:1;padding:9px 8px}}