:root{--bg:#f5f6fa;--card:#fff;--ink:#1f2a37;--sub:#64707f;--line:#d9dfe8;--brand:#2f5bea;--brand-d:#2448c4;--ok:#1a8f55;--err:#c93a3a}
@media (prefers-color-scheme:dark){:root{--bg:#10151c;--card:#19212b;--ink:#e6ebf2;--sub:#93a0b1;--line:#2b3644;--brand:#5b82f5;--brand-d:#7a98f7;--ok:#37c27c;--err:#ef6a6a}}
*{box-sizing:border-box}
body{margin:0;min-height:100vh;display:flex;align-items:flex-start;justify-content:center;background:var(--bg);color:var(--ink);font:15px/1.6 system-ui,-apple-system,"Malgun Gothic",sans-serif}
.card{width:100%;max-width:440px;margin:28px 16px;padding:32px 36px;background:var(--card);border:1px solid var(--line);border-radius:14px}
.card.wide{max-width:960px}
.brand{color:var(--brand);font-weight:700;font-size:13px;letter-spacing:.02em}
h1{font-size:26px;margin:6px 0 18px}
label{display:block;margin:14px 0 6px;color:var(--sub);font-size:14px}
.hint{color:var(--sub);font-size:12px;font-weight:400}
input[type=email],input[type=password],input[type=text],select{width:100%;padding:12px 14px;font-size:15px;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:10px;outline:none}
input:focus,select:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,91,234,.18)}
button{width:100%;margin-top:18px;padding:13px;font-size:16px;font-weight:700;color:#fff;background:var(--brand);border:0;border-radius:10px;cursor:pointer}
button:hover{background:var(--brand-d)}
button:disabled{opacity:.45;cursor:not-allowed}
button.secondary{background:transparent;color:var(--ink);border:1px solid var(--line)}
a{color:var(--ink);font-weight:700}
.center{text-align:center;margin:16px 0 0}
.small{font-size:12px;color:var(--sub)}
.lead{color:var(--sub);margin:0 0 8px}
.note{margin-top:22px;color:var(--sub);font-size:12px}
.msg{padding:10px 12px;border-radius:8px;margin:0 0 6px;font-size:14px}
.msg.err{background:rgba(201,58,58,.1);color:var(--err);border:1px solid rgba(201,58,58,.35)}
.msg.ok{background:rgba(26,143,85,.1);color:var(--ok);border:1px solid rgba(26,143,85,.35)}
.guide{list-style:none;margin:8px 0 0;padding:0;font-size:13px;color:var(--sub)}
.guide li{padding-left:20px;position:relative}
.guide li::before{content:"○";position:absolute;left:0}
.guide li.ok{color:var(--ok)}
.guide li.ok::before{content:"✔"}
.guide li.bad{color:var(--err)}
.guide li.bad::before{content:"✕"}
.info{display:grid;grid-template-columns:90px 1fr;gap:6px 12px;margin:0 0 12px}
.info dt{color:var(--sub)}.info dd{margin:0}
.tbl{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{padding:10px 8px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{color:var(--sub);font-size:12px}
form.inline{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.chk{display:inline-block;margin:0;color:var(--ink);font-size:13px}
select{width:auto;padding:6px 8px}
.small-btn{width:auto;margin:0;padding:7px 14px;font-size:13px}
@media (max-width:480px){.card{padding:24px 20px;margin:12px}}