/* My AI Trust Index — 홈.
   첫 화면은 검진표 한 장이다. 디자인이 믿음을 만드는 게 아니라, 진짜 측정 기록이
   믿음을 만들고 디자인은 그것을 또렷하게 보이게 할 뿐이다. 그래서 장식 대신 위계,
   그라데이션 대신 괘선, 아이콘 대신 숫자. */

:root {
  --ink: #0f1419;         /* 머리 바탕 */
  --ink-2: #1a2028;
  --paper: #f4f2ec;       /* 본문 바탕 */
  --surface: #ffffff;
  --text: #15181c;
  --text-2: #3b4047;
  --muted: #6f7279;
  --muted-on-ink: #9aa0a8;
  --rule: #d9d6cd;
  --rule-on-ink: #2a313a;
  --mark: #d12a1f;        /* 채점자의 빨강 */
  --pass: #1e7f55;
  --fail: #c62b1f;
  --hold: #8a8d93;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #131619; --surface: #1b2026; --text: #ecebe5; --text-2: #c4c2bb; --muted: #8e9198;
    --rule: #2a3037; --mark: #ff6552; --pass: #4cc08a; --fail: #ff7a68; --hold: #8e9198;
  }
}
:root[data-theme="dark"] {
  --paper: #131619; --surface: #1b2026; --text: #ecebe5; --text-2: #c4c2bb; --muted: #8e9198;
  --rule: #2a3037; --mark: #ff6552; --pass: #4cc08a; --fail: #ff7a68; --hold: #8e9198;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { animation: none !important; transition: none !important; } }

body {
  margin: 0; padding-block: 0;
  background: var(--paper); color: var(--text);
  font-family: "IBM Plex Sans KR", "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  font-size: 17px; line-height: 1.7; word-break: keep-all; -webkit-font-smoothing: antialiased;
}
.mono { font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace; }
.wrap { max-width: 1180px; margin: 0 auto; padding-inline: 28px; }
a { color: inherit; }

/* ── 머리띠 ─────────────────────────────────────────── */
.mast { background: var(--ink); color: #fff; border-bottom: 1px solid var(--rule-on-ink); }
.mast .wrap { display: flex; align-items: center; gap: 28px; height: 64px; }
.wordmark { font-family: "IBM Plex Mono", ui-monospace, monospace; font-weight: 600; font-size: .92rem; letter-spacing: .18em; text-transform: uppercase; text-decoration: none; }
.wordmark i { font-style: normal; color: var(--mark); }
.nav { margin-left: auto; display: flex; gap: 22px; align-items: center; }
.nav a { font-size: .9rem; font-weight: 500; color: var(--muted-on-ink); text-decoration: none; }
.nav a:hover, .nav a:focus-visible { color: #fff; }
.nav .lang { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: .74rem; letter-spacing: .1em; border: 1px solid var(--rule-on-ink); padding: 5px 10px; }

/* ── 첫 화면 ────────────────────────────────────────── */
.hero { background: var(--ink); color: #fff; padding-block: 72px 80px; overflow: hidden; }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 56px; align-items: center; }
.eyebrow { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: .74rem; letter-spacing: .16em; text-transform: uppercase; color: var(--muted-on-ink); margin: 0 0 22px; }
.eyebrow b { color: var(--mark); font-weight: 600; }
.hero h1 { margin: 0 0 24px; font-size: clamp(2rem, 4.2vw, 3.3rem); font-weight: 700; line-height: 1.18; letter-spacing: -.028em; text-wrap: balance; }
.hero p.lead { margin: 0 0 34px; font-size: 1.12rem; line-height: 1.75; color: #cfd3d8; max-width: 34em; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 15px 22px; font-weight: 600; font-size: .98rem; text-decoration: none; border: 1px solid transparent; }
.btn.primary { background: #fff; color: var(--ink); }
.btn.primary:hover { background: #e9e7e0; }
.btn.ghost { border-color: #3a424c; color: #fff; }
.btn.ghost:hover { border-color: #fff; }
.btn .arr { font-family: "IBM Plex Mono", ui-monospace, monospace; }
.hero .fine { margin: 26px 0 0; font-size: .86rem; color: var(--muted-on-ink); }

/* 검진표 — 첫 화면의 주인공 */
.card { background: #fff; color: #15181c; border: 1px solid #d9d6cd; box-shadow: 0 30px 60px rgba(0,0,0,.45); position: relative; }
.card .ch { display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; padding: 18px 22px 14px; border-bottom: 2px solid #15181c; }
.card .ch .t { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; color: #6f7279; }
.card .ch .who { margin-top: 6px; font-size: 1.2rem; font-weight: 700; letter-spacing: -.01em; }
.card .ch .who small { display: block; font-size: .78rem; font-weight: 500; color: #6f7279; margin-top: 2px; }
.card .score { text-align: right; }
.card .score b { display: block; font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 2rem; font-weight: 600; line-height: 1; letter-spacing: -.02em; }
.card .score span { font-size: .74rem; color: #6f7279; }
.card table { width: 100%; border-collapse: collapse; font-size: .86rem; }
.card td { padding: 10px 22px; border-top: 1px solid #e7e4dc; vertical-align: top; }
.card td.id { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: .7rem; color: #6f7279; white-space: nowrap; width: 1%; padding-right: 10px; }
.card td.v { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: .7rem; font-weight: 600; letter-spacing: .08em; white-space: nowrap; text-align: right; width: 1%; }
.card tr.pass td.v { color: var(--pass); } .card tr.fail td.v { color: var(--fail); } .card tr.hold td.v { color: #8a8d93; }
.card .cf { padding: 12px 22px 16px; border-top: 2px solid #15181c; font-size: .78rem; color: #6f7279; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.card .cf a { color: #15181c; font-weight: 600; }
.stamp {
  position: absolute; right: 18px; top: 92px; transform: rotate(-9deg);
  font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: .7rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--mark); border: 2px solid var(--mark); padding: 6px 10px; opacity: .9; background: rgba(255,255,255,.85);
}

/* ── 구역 ────────────────────────────────────────────── */
section { padding-block: 84px; border-bottom: 1px solid var(--rule); }
section:last-of-type { border-bottom: 0; }
.sh { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: 36px; align-items: end; margin-bottom: 44px; }
.sh h2 { margin: 0; font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; line-height: 1.22; letter-spacing: -.024em; text-wrap: balance; }
.sh p { margin: 0; color: var(--text-2); font-size: 1.04rem; max-width: 36em; }
.eyebrow.dark { color: var(--muted); margin-bottom: 14px; }

/* 세 단계 */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
.steps > div { background: var(--surface); padding: 30px 28px 32px; }
.steps .n { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: .74rem; letter-spacing: .14em; color: var(--mark); font-weight: 600; }
.steps h3 { margin: 10px 0 10px; font-size: 1.35rem; font-weight: 700; letter-spacing: -.015em; }
.steps h3 small { font-weight: 500; font-size: .82rem; color: var(--muted); margin-left: 8px; }
.steps p { margin: 0; color: var(--text-2); font-size: .98rem; }
.steps .soon { display: inline-block; margin-top: 14px; font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); border: 1px solid var(--rule); padding: 4px 8px; }

/* 사례 */
.case { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 48px; align-items: start; }
.case .story p { margin: 0 0 18px; font-size: 1.06rem; color: var(--text-2); }
.case .story p strong { color: var(--text); font-weight: 600; }
.case .story p.punch { font-size: 1.22rem; color: var(--text); font-weight: 600; line-height: 1.5; border-left: 3px solid var(--mark); padding-left: 18px; }
.evid { background: var(--surface); border: 1px solid var(--rule); }
.evid .eh { padding: 14px 20px; border-bottom: 1px solid var(--rule); font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.evid .q { padding: 18px 20px; border-bottom: 1px solid var(--rule); }
.evid .q .lbl { font-size: .74rem; font-weight: 600; color: var(--muted); margin-bottom: 6px; letter-spacing: .04em; }
.evid .q blockquote { margin: 0; font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: .84rem; line-height: 1.6; color: var(--text); white-space: pre-wrap; }
.evid .q blockquote mark { background: transparent; color: var(--mark); font-weight: 600; }
.evid .ef { padding: 14px 20px; font-size: .86rem; color: var(--muted); }
.evid .ef a { color: var(--text); font-weight: 600; }

/* 여섯 축 */
.dims { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 40px; border-top: 2px solid var(--text); }
.dims > div { padding: 22px 0 26px; border-bottom: 1px solid var(--rule); }
.dims .k { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: .7rem; letter-spacing: .14em; color: var(--mark); font-weight: 600; }
.dims h3 { margin: 6px 0 6px; font-size: 1.12rem; font-weight: 700; letter-spacing: -.01em; }
.dims p { margin: 0; font-size: .95rem; color: var(--text-2); }

/* 헌장 */
.charter { background: var(--ink); color: #fff; }
.charter .sh h2 { color: #fff; } .charter .sh p { color: #cfd3d8; } .charter .eyebrow.dark { color: var(--muted-on-ink); }
.rules { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--rule-on-ink); border: 1px solid var(--rule-on-ink); }
.rules > div { background: var(--ink-2); padding: 26px 26px 28px; }
.rules .n { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: .72rem; letter-spacing: .14em; color: var(--mark); font-weight: 600; }
.rules h3 { margin: 8px 0 8px; font-size: 1.12rem; font-weight: 700; }
.rules p { margin: 0; font-size: .94rem; color: #b9bec5; }

/* 마무리 */
.close .wrap { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr); gap: 40px; align-items: center; }
.close h2 { margin: 0 0 12px; font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; letter-spacing: -.024em; line-height: 1.22; }
.close p { margin: 0; color: var(--text-2); max-width: 34em; }
.close .cta { justify-content: flex-end; }
.close .btn.primary { background: var(--text); color: var(--paper); }
.close .btn.ghost { border-color: var(--rule); color: var(--text); }

footer { border-top: 2px solid var(--text); padding-block: 30px 56px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 10px 32px; justify-content: space-between; font-size: .84rem; color: var(--muted); }
footer a { color: var(--text); text-decoration: none; }

:focus-visible { outline: 2px solid var(--mark); outline-offset: 3px; }

@media (max-width: 960px) {
  .hero .wrap, .case, .close .wrap, .sh { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .dims { grid-template-columns: 1fr 1fr; }
  .rules { grid-template-columns: 1fr; }
  .close .cta { justify-content: flex-start; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .wrap { padding-inline: 20px; }
  .hero { padding-block: 48px 56px; }
  .dims { grid-template-columns: 1fr; }
  .nav a:not(.lang):not(.bench) { display: none; }
  .card .ch { flex-direction: column; } .card .score { text-align: left; }
  .stamp { top: auto; bottom: 64px; right: 12px; }
  section { padding-block: 60px; }
}