*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--ui-bg,#f6f5f1);color:var(--ui-text,#2c3437);font:16px/1.7 system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;display:grid;place-items:center;padding:32px 20px}main{width:min(100%,520px);background:var(--ui-surface,#fcfcf9);border:1px solid var(--ui-line,#d8deda);border-radius:24px;padding:44px 42px;box-shadow:0 18px 64px #2c343708}.identity-brand{display:flex;align-items:center;gap:16px;color:inherit;text-decoration:none;font-size:26px;font-weight:750;letter-spacing:.06em}.identity-brand:before{content:"";width:5px;height:23px;border-radius:4px;background:var(--brand-itop,#d71920)}.identity-brand span{font-size:15px;letter-spacing:.08em;font-weight:500;padding-left:16px;border-left:1px solid var(--ui-line,#d8deda)}.eyebrow{margin:40px 0 6px;color:var(--ui-muted,#5f6b6d);font-size:14px}h1{font-size:32px;letter-spacing:.04em;margin:0 0 14px;font-weight:650}.intro{color:var(--ui-muted,#5f6b6d);margin:0 0 30px}.button{display:flex;align-items:center;justify-content:space-between;background:var(--ui-primary,#405b63);color:var(--ui-on-primary,#fff);text-decoration:none;border-radius:12px;padding:14px 18px;font-weight:600}.button:hover{filter:brightness(1.08)}a:focus-visible{outline:3px solid var(--ui-focus,#405b63);outline-offset:5px}.activation{padding-top:28px;margin-top:28px;border-top:1px solid var(--ui-line,#d8deda)}h2{font-size:17px;margin:0}.activation p{font-size:14px;color:var(--ui-muted,#5f6b6d);margin:8px 0 14px}.activation a{color:var(--ui-primary,#405b63);font-weight:600;text-underline-offset:5px}.notice{padding:14px;border-radius:10px;background:var(--ui-info-bg,#e8eef5);color:var(--ui-info,#3e607b);font-size:14px}.notice.error{background:var(--ui-error-bg,#f7e7e8);color:var(--ui-error,#a23c46)}footer{margin-top:42px;display:flex;justify-content:space-between;align-items:center;gap:12px;color:var(--ui-muted,#5f6b6d);font-size:12px}.brand-atb{background:var(--brand-atb,#e6ff00);color:var(--brand-atb-ink,#283330);padding:3px 7px;border-radius:4px;font-weight:650;letter-spacing:.03em}@media(max-width:520px){main{padding:30px 24px;border-radius:18px}.eyebrow{margin-top:30px}footer{flex-wrap:wrap}}