:root {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --surface-2: #f1f3f9;
  --ink: #0f172a;
  --ink-2: #334155;
  --muted: #64748b;
  --line: #e2e8f0;
  --primary: #1d4ed8;
  --primary-ink: #1e3a8a;
  --primary-soft: #e0e9ff;
  --teal: #0f9d8f;
  --violation: #dc2626;
  --violation-soft: #fee2e2;
  --caution: #d97706;
  --caution-soft: #fef3c7;
  --pass: #059669;
  --pass-soft: #d1fae5;
  --navy: #0b1220;
  --navy-2: #131c33;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 8px 24px -12px rgba(15, 23, 42, 0.18);
  --font: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, system-ui, "Segoe UI", Roboto, "Helvetica Neue", "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font); color: var(--ink); background: var(--bg); line-height: 1.55; -webkit-font-smoothing: antialiased; word-break: keep-all; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: 15px; color: var(--ink); }
.container { width: min(1120px, 100% - 32px); margin: 0 auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* header */
.top { position: sticky; top: 0; z-index: 50; background: rgba(255, 255, 255, 0.85); backdrop-filter: saturate(160%) blur(12px); border-bottom: 1px solid var(--line); }
.top .container { display: flex; align-items: center; gap: 24px; height: 62px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 17px; letter-spacing: -0.01em; }
.logo .mark { width: 30px; height: 30px; border-radius: 9px; background: linear-gradient(135deg, var(--primary), var(--teal)); display: grid; place-items: center; color: #fff; font-size: 15px; font-weight: 900; }
.logo small { font-weight: 600; color: var(--muted); font-size: 12px; margin-left: 2px; }
.nav { display: flex; gap: 4px; margin-left: auto; }
.nav a { padding: 8px 12px; border-radius: 8px; font-size: 14px; color: var(--ink-2); font-weight: 600; }
.nav a:hover { background: var(--surface-2); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 16px; border-radius: 10px; font-weight: 700; font-size: 14px; border: 1px solid transparent; transition: transform 0.08s ease, background 0.15s ease; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-ink); }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { background: var(--surface-2); }
.btn-lg { padding: 14px 22px; font-size: 16px; border-radius: 12px; }
.btn[disabled] { opacity: 0.55; cursor: not-allowed; }

/* hero */
.hero { background: radial-gradient(1200px 500px at 20% -10%, #1e3a8a55, transparent), radial-gradient(800px 400px at 90% 10%, #0f9d8f44, transparent), linear-gradient(180deg, var(--navy), var(--navy-2)); color: #fff; padding: 72px 0 64px; }
.hero .grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 48px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700; letter-spacing: 0.02em; color: #a5f3fc; background: rgba(255, 255, 255, 0.08); border: 1px solid rgba(255, 255, 255, 0.14); padding: 6px 12px; border-radius: 999px; }
.hero h1 { font-size: clamp(30px, 4.2vw, 46px); line-height: 1.2; letter-spacing: -0.02em; margin: 18px 0 14px; font-weight: 800; }
.hero h1 em { font-style: normal; color: #7dd3fc; }
.hero p.lead { font-size: 17px; color: #cbd5e1; margin: 0 0 26px; max-width: 560px; }
.hero .cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero .btn-ghost { border-color: rgba(255, 255, 255, 0.25); color: #fff; }
.hero .btn-ghost:hover { background: rgba(255, 255, 255, 0.08); }
.stats { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 30px; }
.stat { background: rgba(255, 255, 255, 0.07); border: 1px solid rgba(255, 255, 255, 0.12); border-radius: 12px; padding: 10px 14px; min-width: 128px; }
.stat b { display: block; font-size: 22px; letter-spacing: -0.02em; }
.stat span { font-size: 12px; color: #94a3b8; }
.preview { background: #fff; color: var(--ink); border-radius: 18px; box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.6); padding: 18px; }
.preview .ph { display: flex; justify-content: space-between; align-items: center; font-size: 12px; color: var(--muted); margin-bottom: 10px; }
.preview .src { font-size: 14px; background: var(--surface-2); border-radius: 10px; padding: 12px; line-height: 1.7; }
.preview .src mark { padding: 1px 3px; border-radius: 4px; background: var(--violation-soft); color: #7f1d1d; }
.preview .src mark.c { background: var(--caution-soft); color: #78350f; }
.preview .src mark.p { background: var(--pass-soft); color: #064e3b; }
.preview .card { border: 1px solid var(--line); border-radius: 12px; padding: 12px; margin-top: 10px; font-size: 13px; }
.preview .card .row { display: flex; gap: 8px; align-items: center; margin-bottom: 6px; flex-wrap: wrap; }
.preview .ev { color: var(--muted); font-size: 12px; margin-top: 4px; }
.preview .rw { margin-top: 8px; background: var(--pass-soft); border-radius: 8px; padding: 8px 10px; color: #064e3b; }

/* badges */
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 700; line-height: 1.6; }
.badge.violation { background: var(--violation-soft); color: #991b1b; }
.badge.caution { background: var(--caution-soft); color: #92400e; }
.badge.pass { background: var(--pass-soft); color: #065f46; }
.badge.code { background: var(--surface-2); color: var(--ink-2); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 11px; }
.badge.kind { background: var(--primary-soft); color: var(--primary-ink); }
.badge.rule { background: #ede9fe; color: #5b21b6; }
.badge.risk-high { background: #fee2e2; color: #991b1b; }
.badge.risk-medium { background: #ffedd5; color: #9a3412; }
.badge.risk-low { background: #e2e8f0; color: #334155; }

/* sections */
section.block { padding: 72px 0; }
section.block.alt { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sec-head { max-width: 720px; margin-bottom: 32px; }
.sec-head .kicker { color: var(--primary); font-weight: 800; font-size: 13px; letter-spacing: 0.04em; text-transform: uppercase; }
.sec-head h2 { font-size: clamp(24px, 3vw, 32px); letter-spacing: -0.02em; margin: 8px 0 10px; line-height: 1.25; }
.sec-head p { color: var(--muted); margin: 0; font-size: 16px; }

/* app */
.app { display: grid; grid-template-columns: 400px 1fr; gap: 24px; align-items: start; }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.panel .ph { padding: 16px 18px; border-bottom: 1px solid var(--line); display: flex; align-items: center; gap: 10px; }
.panel .ph h3 { margin: 0; font-size: 15px; }
.panel .ph .step { width: 24px; height: 24px; border-radius: 50%; background: var(--primary); color: #fff; font-size: 12px; font-weight: 800; display: grid; place-items: center; }
.panel .pb { padding: 16px 18px; }
.field { margin-bottom: 14px; }
.field label, .field .lbl { display: block; font-size: 13px; font-weight: 700; color: var(--ink-2); margin-bottom: 6px; }
.field .help { font-size: 12px; color: var(--muted); margin-top: 4px; }
.input, textarea.input { width: 100%; border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; background: #fff; outline: none; }
.input:focus, textarea.input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
textarea.input { min-height: 200px; resize: vertical; line-height: 1.6; }
.cats { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.cat { border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; cursor: pointer; background: #fff; display: flex; flex-direction: column; gap: 2px; transition: all 0.12s; }
.cat b { font-size: 14px; }
.cat span { font-size: 12px; color: var(--muted); }
.cat.on { border-color: var(--primary); background: var(--primary-soft); }
.cat input { display: none; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { border: 1px solid var(--line); background: #fff; border-radius: 999px; padding: 5px 11px; font-size: 13px; font-weight: 600; color: var(--ink-2); }
.chip.on { background: var(--ink); color: #fff; border-color: var(--ink); }
.chip.sample { background: var(--surface-2); }
.chip.sample:hover { background: var(--primary-soft); color: var(--primary-ink); }
.tabs { display: flex; gap: 4px; background: var(--surface-2); padding: 4px; border-radius: 10px; margin-bottom: 12px; }
.tabs button { flex: 1; border: 0; background: transparent; padding: 8px; border-radius: 8px; font-weight: 700; font-size: 13px; color: var(--muted); }
.tabs button.on { background: #fff; color: var(--ink); box-shadow: var(--shadow); }
.drop { border: 2px dashed var(--line); border-radius: 12px; padding: 22px; text-align: center; color: var(--muted); font-size: 14px; background: #fafbff; }
.drop.over { border-color: var(--primary); background: var(--primary-soft); }
.thumbs { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.thumbs img { width: 64px; height: 64px; object-fit: cover; border-radius: 8px; border: 1px solid var(--line); }
.hidden { display: none !important; }
.counter { font-size: 12px; color: var(--muted); text-align: right; margin-top: 4px; }

/* result */
.progress { display: grid; gap: 8px; }
.pstep { display: flex; gap: 12px; align-items: flex-start; padding: 10px 12px; border-radius: 10px; background: var(--surface-2); color: var(--muted); font-size: 14px; }
.pstep .dot { width: 22px; height: 22px; border-radius: 50%; border: 2px solid var(--line); flex: none; display: grid; place-items: center; font-size: 11px; background: #fff; }
.pstep.active { background: var(--primary-soft); color: var(--primary-ink); }
.pstep.active .dot { border-color: var(--primary); }
.pstep.active .dot::after { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--primary); animation: pulse 1s infinite; }
.pstep.done { color: var(--ink-2); }
.pstep.done .dot { border-color: var(--pass); background: var(--pass); color: #fff; }
.pstep .lbl { font-weight: 700; }
.pstep .det { font-size: 12px; opacity: 0.85; }
@keyframes pulse { 0%, 100% { transform: scale(0.8); opacity: 0.6; } 50% { transform: scale(1.2); opacity: 1; } }
.empty { padding: 48px 24px; text-align: center; color: var(--muted); }
.empty .big { font-size: 40px; margin-bottom: 8px; }

.score { display: grid; grid-template-columns: 150px 1fr; gap: 20px; align-items: center; }
.ring { position: relative; width: 150px; height: 150px; }
.ring svg { transform: rotate(-90deg); }
.ring .num { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; }
.ring .num b { font-size: 38px; letter-spacing: -0.03em; line-height: 1; }
.ring .num span { font-size: 12px; color: var(--muted); }
.counts { display: flex; gap: 8px; flex-wrap: wrap; margin: 10px 0; }
.count { border-radius: 10px; padding: 8px 12px; min-width: 84px; }
.count b { display: block; font-size: 20px; }
.count span { font-size: 12px; }
.count.violation { background: var(--violation-soft); color: #7f1d1d; }
.count.caution { background: var(--caution-soft); color: #78350f; }
.count.pass { background: var(--pass-soft); color: #064e3b; }
.count.neutral { background: var(--surface-2); color: var(--ink-2); }
.comment { font-size: 15px; color: var(--ink-2); }
.meta { font-size: 12px; color: var(--muted); margin-top: 8px; display: flex; gap: 12px; flex-wrap: wrap; }
.src-view { white-space: pre-wrap; line-height: 1.9; font-size: 15px; background: var(--surface-2); border-radius: 12px; padding: 16px; }
.src-view mark { border-radius: 4px; padding: 1px 3px; cursor: pointer; border-bottom: 2px solid transparent; }
.src-view mark.violation { background: var(--violation-soft); color: #7f1d1d; border-bottom-color: var(--violation); }
.src-view mark.caution { background: var(--caution-soft); color: #78350f; border-bottom-color: var(--caution); }
.src-view mark.pass { background: var(--pass-soft); color: #064e3b; border-bottom-color: var(--pass); }
.src-view mark:hover { filter: brightness(0.95); }
.filters { display: flex; gap: 6px; flex-wrap: wrap; margin: 16px 0 10px; }
.claim { border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; margin-bottom: 12px; background: #fff; border-left: 4px solid var(--line); scroll-margin-top: 80px; }
.claim.violation { border-left-color: var(--violation); }
.claim.caution { border-left-color: var(--caution); }
.claim.pass { border-left-color: var(--pass); }
.claim.flash { box-shadow: 0 0 0 3px var(--primary-soft); }
.claim .head { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; margin-bottom: 8px; }
.claim .head .id { font-size: 12px; color: var(--muted); font-weight: 700; margin-right: 2px; }
.claim blockquote { margin: 0 0 8px; font-size: 16px; font-weight: 700; line-height: 1.5; }
.claim .reason { font-size: 14px; color: var(--ink-2); margin-bottom: 10px; }
.claim details { margin-top: 6px; }
.claim summary { cursor: pointer; font-size: 13px; font-weight: 700; color: var(--primary-ink); }
.evs { display: grid; gap: 8px; margin-top: 8px; }
.ev { background: var(--surface-2); border-radius: 10px; padding: 10px 12px; font-size: 13px; }
.ev .ref { font-weight: 700; display: flex; gap: 6px; align-items: center; flex-wrap: wrap; margin-bottom: 4px; }
.ev .ref a { color: var(--primary); font-weight: 600; font-size: 12px; }
.ev .q { color: var(--ink-2); }
.ev .nv { font-size: 11px; color: var(--muted); }
.rewrite { margin-top: 10px; border-radius: 10px; padding: 10px 12px; background: var(--pass-soft); border: 1px solid #a7f3d0; }
.rewrite .lbl { font-size: 12px; font-weight: 800; color: #065f46; display: flex; gap: 8px; align-items: center; justify-content: space-between; }
.rewrite .txt { font-size: 15px; margin: 4px 0; color: #064e3b; }
.rewrite .note { font-size: 12px; color: #047857; }
.rewrite.unverified { background: #fffbeb; border-color: #fde68a; }
.rewrite.unverified .lbl, .rewrite.unverified .txt, .rewrite.unverified .note { color: #78350f; }
.subst { margin-top: 8px; font-size: 13px; color: #7c2d12; background: #fff7ed; border-radius: 8px; padding: 8px 10px; }
.mini { border: 0; background: transparent; color: var(--primary); font-weight: 700; font-size: 12px; padding: 2px 6px; border-radius: 6px; }
.mini:hover { background: var(--primary-soft); }
.actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; }
.disclaimer { font-size: 12px; color: var(--muted); border-top: 1px dashed var(--line); padding-top: 12px; margin-top: 16px; }
.alert { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; border-radius: 10px; padding: 10px 12px; font-size: 14px; }
.notice { background: #eff6ff; color: #1e3a8a; border: 1px solid #bfdbfe; border-radius: 10px; padding: 10px 12px; font-size: 13px; }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 10px; font-size: 14px; z-index: 100; opacity: 0; transition: opacity 0.2s; pointer-events: none; }
.toast.show { opacity: 1; }

/* how */
.pillars { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.pillar { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.pillar .ic { width: 40px; height: 40px; border-radius: 10px; background: var(--primary-soft); color: var(--primary-ink); display: grid; place-items: center; font-weight: 900; margin-bottom: 12px; }
.pillar h4 { margin: 0 0 6px; font-size: 16px; }
.pillar p { margin: 0; font-size: 14px; color: var(--muted); }
.flow { display: grid; grid-template-columns: repeat(7, 1fr); gap: 8px; margin-top: 28px; }
.flow .f { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 12px 10px; text-align: center; font-size: 13px; position: relative; }
.flow .f b { display: block; font-size: 11px; color: var(--primary); margin-bottom: 4px; letter-spacing: 0.04em; }
.flow .f::after { content: "→"; position: absolute; right: -12px; top: 50%; transform: translateY(-50%); color: var(--muted); font-size: 14px; }
.flow .f:last-child::after { display: none; }
.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 28px; }
.principle { background: var(--surface-2); border-radius: 12px; padding: 14px 16px; font-size: 14px; }
.principle b { display: block; margin-bottom: 4px; }

/* timeline */
.timeline { display: grid; gap: 12px; }
.tl { display: grid; grid-template-columns: 120px 1fr; gap: 16px; padding: 14px 16px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; }
.tl .d { font-weight: 800; color: var(--primary); }
.tl .t { font-size: 15px; }
.tl .t small { display: block; color: var(--muted); font-size: 13px; margin-top: 2px; }
.bignums { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 28px; }
.bignum { background: var(--navy); color: #fff; border-radius: 14px; padding: 18px; }
.bignum b { display: block; font-size: 30px; letter-spacing: -0.02em; color: #7dd3fc; }
.bignum span { font-size: 13px; color: #cbd5e1; }

/* codex explorer */
.explorer { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); }
.explorer .bar { display: flex; gap: 8px; flex-wrap: wrap; }
.explorer .bar .input { flex: 1; min-width: 200px; }
.explorer select.input { width: auto; }
.results { margin-top: 14px; display: grid; gap: 8px; max-height: 520px; overflow: auto; }
.rs { border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; font-size: 13px; }
.rs .ref { font-weight: 700; margin-bottom: 4px; display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.rs .t { color: var(--ink-2); }
.kindstats { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }

/* pricing */
.plans { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.plan { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; display: flex; flex-direction: column; }
.plan.hot { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.plan h4 { margin: 0; font-size: 16px; }
.plan .price { font-size: 26px; font-weight: 800; margin: 8px 0 2px; letter-spacing: -0.02em; }
.plan .price small { font-size: 13px; color: var(--muted); font-weight: 600; }
.plan .for { color: var(--muted); font-size: 13px; margin-bottom: 12px; }
.plan ul { margin: 0 0 16px; padding-left: 18px; font-size: 14px; color: var(--ink-2); }
.plan li { margin-bottom: 4px; }
.plan .btn { margin-top: auto; }

/* faq */
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 700; font-size: 15px; }
.faq p { margin: 10px 0 0; color: var(--ink-2); font-size: 14px; }

footer { padding: 40px 0; color: var(--muted); font-size: 13px; border-top: 1px solid var(--line); }
footer .row { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

@media (max-width: 960px) {
  .hero .grid { grid-template-columns: 1fr; }
  .app { grid-template-columns: 1fr; }
  .pillars, .plans, .bignums { grid-template-columns: 1fr 1fr; }
  .flow { grid-template-columns: repeat(4, 1fr); }
  .flow .f::after { display: none; }
  .principles { grid-template-columns: 1fr; }
  .nav { display: none; }
}
@media (max-width: 600px) {
  .container { width: min(1120px, 100% - 32px); }
  .hero { padding: 48px 0 40px; }
  .pillars, .plans, .bignums { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr 1fr; }
  .score { grid-template-columns: 1fr; justify-items: center; text-align: center; }
  .tl { grid-template-columns: 1fr; gap: 4px; }
  .cats { grid-template-columns: 1fr; }
}