/* css/portal.css — 포털(index.html) 전용 스타일.
   css/style.css의 색상 토큰을 그대로 이어받는다. ATLAS 포털이 그렇듯,
   포털도 결국 같은 프로젝트의 정문이라 지도 페이지들과 다른 브랜드처럼
   보이면 안 된다.

   style.css는 지도 앱(고정 뷰포트, 스크롤 없음)을 기준으로 body를
   잡아두므로, 위→아래로 읽는 포털에서는 명시적으로 되돌린다. */

html { height: auto !important; overflow-y: auto !important; overflow-x: hidden; }
body.portal {
  min-height: 100vh; height: auto !important;
  overflow: visible !important;
}

/* ── 상단 내비 ── */
.portal-nav {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 24px; border-bottom: 1px solid var(--line);
  position: sticky; top: 0; background: rgba(21,19,15,.92);
  backdrop-filter: blur(8px); z-index: 100;
}
.portal-nav .fill { flex: 1; }
.portal-brand {
  font-family: var(--serif); font-weight: 700; font-size: 16px;
  color: var(--paper); text-decoration: none; letter-spacing: -.01em;
}
.portal-brand span { color: var(--gold); }

/* ── 히어로 ── */
.hero { padding: 64px 24px 40px; }
.hero-inner { max-width: 860px; margin: 0 auto; }
.hero-eyebrow {
  font-family: var(--mono); font-size: 11.5px; color: var(--gold);
  letter-spacing: .22em; margin-bottom: 18px;
}
.hero-title {
  font-family: var(--serif); font-weight: 700; font-size: 46px;
  line-height: 1.22; letter-spacing: -.03em; margin-bottom: 22px;
}
.hero-lead {
  font-size: 15px; line-height: 1.85; color: var(--paper-dim);
  max-width: 620px; word-break: keep-all;
}

.hero-principle {
  margin-top: 28px; padding: 16px 18px; max-width: 620px;
  border-left: 2px solid var(--gold); background: rgba(184,152,96,.07);
  font-size: 13px; line-height: 1.8; color: var(--paper-dim); word-break: keep-all;
}
.hero-principle b {
  display: block; color: var(--paper); font-family: var(--serif);
  font-size: 15px; font-weight: 700; margin-bottom: 6px;
}

/* ── 시대 카드 ── */
.era-launch { margin-top: 44px; }
.era-launch-label {
  font-size: 11px; color: var(--paper-dim); font-weight: 600;
  letter-spacing: .1em; margin-bottom: 12px;
}
.era-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }

.era-card {
  display: block; text-decoration: none; color: inherit; position: relative;
  border: 1px solid var(--line); border-radius: 8px; padding: 18px 16px 16px;
  background: rgba(184,152,96,.05); transition: border-color .16s, background .16s;
}
.era-card:hover { border-color: var(--gold); background: rgba(184,152,96,.13); }
.era-card.disabled { opacity: .45; pointer-events: none; }

.era-no {
  font-family: var(--mono); font-size: 10px; color: var(--gold);
  letter-spacing: .1em; margin-bottom: 8px;
}
.era-period { font-family: var(--mono); font-size: 11px; color: var(--paper-dim); }
.era-name {
  font-family: var(--serif); font-weight: 700; font-size: 18px;
  margin: 3px 0 8px; letter-spacing: -.02em;
}
.era-tagline { font-size: 12.5px; color: var(--gold); margin-bottom: 9px; }
.era-summary { font-size: 12px; line-height: 1.7; color: var(--paper-dim); word-break: keep-all; }

.era-badge {
  position: absolute; top: 14px; right: 14px; font-family: var(--mono);
  font-size: 9px; letter-spacing: .06em; padding: 2px 6px; border-radius: 3px;
  border: 1px solid currentColor;
}
.badge-soon { color: var(--paper-dim); }
.badge-live { color: var(--gold-bright); }

/* ── 본문 섹션 ── */
.portal-main { max-width: 860px; margin: 0 auto; padding: 20px 24px 60px; }
.sec { margin-top: 60px; }
.sec-title {
  font-family: var(--serif); font-weight: 700; font-size: 21px;
  letter-spacing: -.02em; padding-bottom: 12px; margin-bottom: 20px;
  border-bottom: 1px solid var(--line);
}
.sec-lead {
  font-size: 13.5px; line-height: 1.85; color: var(--paper-dim);
  margin-bottom: 22px; word-break: keep-all;
}
.sec-lead b, .sec-foot b { color: var(--paper); font-weight: 500; }
.sec-foot {
  font-size: 12.5px; line-height: 1.8; color: var(--paper-dim);
  margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line);
  word-break: keep-all;
}

/* 왜 셋으로 나누었나 */
.reason-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.reason { border-top: 2px solid var(--line-strong); padding-top: 14px; }
.reason-no {
  font-family: var(--mono); font-size: 22px; color: var(--gold);
  line-height: 1; margin-bottom: 10px;
}
.reason h3 {
  font-family: var(--serif); font-size: 15px; font-weight: 700;
  margin-bottom: 8px; letter-spacing: -.01em;
}
.reason p { font-size: 12.5px; line-height: 1.75; color: var(--paper-dim); word-break: keep-all; }
.reason b { color: var(--paper); font-weight: 500; }

/* 기록 원칙 */
.rule-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.rule {
  border: 1px solid var(--line); border-radius: 6px; padding: 15px 16px;
  background: rgba(184,152,96,.04);
}
.rule h3 {
  font-family: var(--serif); font-size: 14px; font-weight: 700; margin-bottom: 7px;
}
.rule p { font-size: 12.5px; line-height: 1.75; color: var(--paper-dim); word-break: keep-all; }
.rule b { color: var(--paper); font-weight: 500; }

/* 구축 현황 */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.stat {
  border: 1px solid var(--line); border-radius: 6px; padding: 14px;
  text-align: center; background: rgba(184,152,96,.04);
}
.stat-num {
  font-family: var(--mono); font-size: 22px; font-weight: 500;
  color: var(--gold-bright); line-height: 1.1;
}
.stat-num small { font-size: 11px; color: var(--paper-dim); }
.stat-label { font-size: 11px; color: var(--paper-dim); margin-top: 6px; }

/* ── 푸터 ── */
.portal-foot {
  border-top: 1px solid var(--line); padding: 28px 24px 40px;
  text-align: center; font-size: 12.5px; color: var(--paper-dim);
}
.portal-foot a { color: var(--gold); }
.foot-dim { font-size: 11.5px; margin-top: 8px; opacity: .75; }

@media (max-width: 760px) {
  .hero { padding: 40px 18px 28px; }
  .hero-title { font-size: 32px; }
  .hero-lead { font-size: 14px; }
  .era-grid, .reason-grid, .rule-grid { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .portal-main { padding: 12px 18px 48px; }
  .sec { margin-top: 44px; }
}