:root{--paper: #f5f1ea;--card: #fffdf8;--ink: #221d17;--ink-soft: #6c6357;--line: #ddd4c6;--accent: #c05a1e;--accent-deep: #99430f;--stamp-red: #b3261e}*{box-sizing:border-box}html,body{height:100%}body{margin:0;font-family:Inter,system-ui,-apple-system,sans-serif;color:var(--ink);background:radial-gradient(1100px 500px at 85% -10%,rgba(192,90,30,.07),transparent 60%),radial-gradient(900px 480px at -10% 110%,rgba(34,29,23,.05),transparent 55%),var(--paper);-webkit-font-smoothing:antialiased}.kb-gate{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px 16px 48px}.kb-gate-card{width:100%;max-width:400px}.kb-sheet{background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:0 1px 2px #221d170d,0 16px 40px -18px #221d1747;overflow:hidden}.kb-sheet:before{content:"";display:block;height:16px;background:repeating-linear-gradient(90deg,transparent 0 7px,var(--paper) 7px 15px,transparent 15px 22px),var(--ink);border-bottom:1px solid var(--line)}.kb-sheet-pad{padding:28px 26px 26px}.word{display:block;font-family:Sora,sans-serif;font-weight:800;font-size:26px;letter-spacing:-.02em;color:var(--ink)}.word b{color:var(--accent);font-weight:800}.tag{margin:6px 0 22px;font-size:14px;line-height:1.55;color:var(--ink-soft)}.kb-field{margin-bottom:16px}.kb-field label{display:block;margin-bottom:6px;font-size:12px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-soft)}.kb-field input{width:100%;padding:11px 13px;font:500 15px Inter,system-ui,sans-serif;color:var(--ink);background:#fff;border:1.5px solid var(--line);border-radius:9px;outline:none;transition:border-color .12s ease,box-shadow .12s ease}.kb-field input::placeholder{color:#b0a698}.kb-field input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #c05a1e29}.hint{margin-top:7px;font-size:13px}.kb-btn{display:inline-flex;align-items:center;gap:8px;padding:11px 18px;font:600 15px Inter,system-ui,sans-serif;border-radius:9px;border:1.5px solid transparent;cursor:pointer;transition:background .12s ease,transform 60ms ease}.kb-btn:active{transform:translateY(1px)}.kb-btn-primary{background:var(--ink);color:var(--card)}.kb-btn-primary:hover{background:var(--accent-deep)}.kb-btn-primary:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.kb-h1{margin:0 0 4px;font-family:Sora,sans-serif;font-weight:700;letter-spacing:-.02em;color:var(--ink)}.kb-doc p{margin:0 0 14px}.kb-doc b{color:var(--ink)}.kb-doc a{color:var(--accent-deep)}@media(max-width:480px){.kb-sheet-pad{padding:22px 18px 20px}.word{font-size:23px}}