:root{--bg:#050b1e;--card:rgba(18,28,62,.72);--line:rgba(130,170,255,.16);--tx:#eaf1ff;--mu:#93a3c9;--ac:#38bdf8;--ac2:#6366f1;--ok:#34d399;--er:#fb7185;--wa:#fbbf24}
*{box-sizing:border-box;margin:0}
html{background:var(--bg)}
body{color:var(--tx);font:16px/1.55 Inter,system-ui,-apple-system,"Segoe UI",sans-serif;min-height:100vh;background:radial-gradient(900px 520px at 8% -10%,#1d4fa855,transparent),radial-gradient(800px 520px at 100% 0,#5b21b655,transparent),var(--bg);background-attachment:fixed;-webkit-font-smoothing:antialiased}
main{max-width:820px;margin:0 auto;padding:22px 16px 70px}
#brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
#brand b{display:block;font-size:1.35rem;letter-spacing:-.02em;background:linear-gradient(90deg,#fff,#7dd3fc);-webkit-background-clip:text;background-clip:text;color:transparent}
#brand span{display:block;font-size:.78rem;color:var(--mu);margin-top:-2px}
h1{font-size:1.7rem;letter-spacing:-.02em;margin-bottom:6px}h2{font-size:1.25rem;letter-spacing:-.01em;margin-bottom:6px}
.card{background:var(--card);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:18px;padding:22px;margin:14px 0;box-shadow:0 12px 40px #0006;animation:up .35s ease both}
@keyframes up{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.mu{color:var(--mu);font-size:.92rem}
label{display:block;font-size:.78rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--mu);margin:16px 0 6px}
input,select{width:100%;padding:13px 14px;border-radius:12px;border:1px solid var(--line);background:#081030cc;color:var(--tx);font:inherit;outline:none;transition:border-color .2s,box-shadow .2s}
input:focus,select:focus{border-color:var(--ac);box-shadow:0 0 0 4px #38bdf822}
input::placeholder{color:#5d6b94}
button{padding:13px 20px;border:0;border-radius:12px;background:linear-gradient(135deg,var(--ac),var(--ac2));color:#fff;font:inherit;font-weight:700;cursor:pointer;transition:transform .15s,box-shadow .2s,opacity .2s;box-shadow:0 6px 20px #38bdf825}
button:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 10px 28px #38bdf840}
button.g{background:#ffffff08;color:#bfe6ff;border:1px solid var(--line);box-shadow:none}
button.d{background:linear-gradient(135deg,#f43f5e,#be123c)}
button:disabled{opacity:.45;cursor:not-allowed}
.row{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}.row>*{flex:1;min-width:130px}
.msg{padding:12px 14px;border-radius:12px;margin:12px 0;font-size:.92rem;background:#0b2a44aa;border:1px solid #1d6a9a88}
.msg.ok{background:#0b2f26aa;border-color:#1b7a5f88}.msg.er{background:#3a1220aa;border-color:#8a2a4488}.msg.wa{background:#37290aaa;border-color:#8a6a1e88}
.hide{display:none!important}.ctr{text-align:center}
.code{font:800 3.2rem/1 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.28em;text-indent:.28em;text-align:center;padding:18px;background:#081030;border:1px solid var(--line);border-radius:16px;color:var(--ac);text-shadow:0 0 24px #38bdf880}
.regin{font-size:1.8rem;text-align:center;letter-spacing:.35em;font-family:ui-monospace,monospace;font-weight:700}
.qr{background:#fff;padding:14px;border-radius:16px;display:inline-block;box-shadow:0 0 50px #38bdf855}
.stage{position:relative;width:100%;max-width:720px;margin:14px auto;background:#000;border-radius:18px;overflow:hidden;aspect-ratio:4/3;border:1px solid var(--line)}
.stage video{width:100%;height:100%;display:block}
.stage canvas.fo{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.bar{height:8px;border-radius:99px;background:#38bdf822;overflow:hidden;margin-top:6px}.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--ac),var(--ok));transition:width .6s}
.cand{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px;margin-top:10px}.cand button{padding:10px;font-size:.85rem;text-align:left}
.ov{position:absolute;border:3px solid var(--ac);border-radius:12px;box-shadow:0 0 0 999px #020617aa,0 0 24px #38bdf8aa inset;pointer-events:none}
.steps{display:flex;gap:6px;margin:0 0 6px;overflow-x:auto}
.st{flex:1;min-width:64px;text-align:center;font-size:.72rem;color:var(--mu)}
.st i{display:grid;place-items:center;width:30px;height:30px;margin:0 auto 4px;border-radius:50%;border:1.5px solid var(--line);font-style:normal;font-weight:700;background:#081030}
.st.on{color:#fff}.st.on i{border-color:var(--ac);background:linear-gradient(135deg,var(--ac),var(--ac2));box-shadow:0 0 18px #38bdf877}
.st.done i{background:var(--ok);border-color:var(--ok);color:#04231a}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}
.stu{cursor:pointer;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:12px;transition:transform .15s,border-color .2s}
.stu:hover{transform:translateY(-3px);border-color:var(--ac)}
img.t{width:100%;border-radius:10px;display:block;margin-top:6px}
.pill{display:inline-block;font-size:.72rem;font-weight:700;padding:2px 9px;border-radius:99px;background:#38bdf822;color:#7dd3fc}
.tabs{display:flex;gap:6px;position:sticky;top:0;background:linear-gradient(var(--bg) 70%,transparent);padding:10px 0 12px;z-index:5;overflow-x:auto}
.tabs button{flex:1;white-space:nowrap;padding:11px 12px}
.modal{position:fixed;inset:0;background:#020617cc;backdrop-filter:blur(6px);display:flex;align-items:flex-start;justify-content:center;overflow:auto;padding:16px;z-index:50}
.modal>div{background:#0d1638;border:1px solid var(--line);border-radius:18px;max-width:820px;width:100%;padding:20px}
.chips{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:8px;margin-top:10px}
.chip{font:700 1.25rem ui-monospace,monospace;letter-spacing:.15em;text-align:center;padding:12px 6px;border-radius:12px;background:#081030;border:1px dashed var(--ac);color:var(--ac);cursor:pointer;position:relative}
.chip:hover{background:#0c1a48}.chip small{display:block;font:.65rem system-ui;color:var(--mu);letter-spacing:0}
@media print{body{background:#fff;color:#000}.tabs,button,#brand,.msg,.mu{display:none!important}.chip{border:1px solid #000;color:#000;background:#fff}.card{background:#fff;box-shadow:none;border:0}}
@media(max-width:520px){main{padding:16px 12px 60px}.card{padding:16px}.code{font-size:2.3rem}}