/* AI Power Atlas — shared site stylesheet
   Design tokens per design_handoff_apa_site/README.md (2026-07-20 handoff) */

:root {
  --bg: #0c0b09; --card: #141210; --innerCard: #0c0b09;
  --border: rgba(255,255,255,.08); --borderStrong: rgba(255,255,255,.16);
  --text: #f4f1ea; --muted: #a39d90; --muted2: #7a756a; --sub: #d0cdc4;
  --accent: #d4a843; --accentText: #0c0b09; --accentSoft: rgba(212,168,67,.06);
  --green: #4db87a; --red: #c9584f; --line2: #5a564c;
  --navBg: rgba(12,11,9,.9);
}
:root[data-theme="light"] {
  --bg: #faf8f4; --card: #ffffff; --innerCard: #f3f0ea;
  --border: rgba(0,0,0,.08); --borderStrong: rgba(0,0,0,.14);
  --text: #1a1712; --muted: #6b665c; --muted2: #8a8478; --sub: #3a352c;
  --accent: #b8862f; --accentText: #ffffff; --accentSoft: rgba(184,134,47,.08);
  --green: #2f8f5b; --red: #b8443a; --line2: #c9c3b6;
  --navBg: rgba(250,248,244,.9);
}

* , *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg); color: var(--text);
  font-family: 'Inter', 'Noto Sans KR', sans-serif;
  transition: background .2s, color .2s;
  min-height: 100vh;
}
body.lang-ko, body.lang-jp, body.lang-tw { font-family: 'Noto Sans KR', 'Inter', sans-serif; }
a { text-decoration: none; color: inherit; }
h1, h2, h3, h4, .font-display { font-family: 'Outfit', 'Noto Sans KR', sans-serif; }
.mono { font-family: 'JetBrains Mono', monospace; }
img { max-width: 100%; display: block; }
.container { max-width: 1280px; margin: 0 auto; }

/* ---- Layout paddings (mirrors r.padH / r.sectionGapB from the design ref) ---- */
.px { padding-left: 20px; padding-right: 20px; }
@media (min-width: 768px) { .px { padding-left: 32px; padding-right: 32px; } }
@media (min-width: 1200px) { .px { padding-left: 56px; padding-right: 56px; } }
.section { padding-top: 0; padding-bottom: 56px; }
@media (min-width: 768px) { .section { padding-bottom: 90px; } }
.section-footer-gap { padding-bottom: 70px; }
@media (min-width: 768px) { .section-footer-gap { padding-bottom: 100px; } }

/* ---- Nav ---- */
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: var(--navBg);
  backdrop-filter: blur(8px); z-index: 50;
}
@media (min-width: 768px) { .nav { padding: 20px 32px; } }
@media (min-width: 1200px) { .nav { padding: 20px 56px; } }
.nav-logo { font-family: 'Outfit', sans-serif; font-weight: 700; font-size: 21px; letter-spacing: -0.01em; white-space: nowrap; color: var(--text); }
.nav-logo .accent { color: var(--accent); }
.nav-links { display: none; gap: 22px; font-size: 14.5px; }
@media (min-width: 1200px) { .nav-links { display: flex; } }
.nav-links a { color: var(--muted); padding-bottom: 4px; border-bottom: 2px solid transparent; transition: color .15s; white-space: nowrap; }
.nav-links a:hover, .nav-links a.active { color: var(--accent); }
.nav-links a.active { border-bottom-color: var(--accent); }
.nav-right { display: flex; align-items: center; gap: 14px; }
.nav-cta { background: var(--accent); color: var(--accentText); font-size: 14px; font-weight: 600; padding: 10px 19px; border-radius: 6px; white-space: nowrap; display: none; }
@media (min-width: 1200px) { .nav-cta { display: inline-block; } }
.theme-toggle {
  width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center; cursor: pointer;
  font-size: 15px; flex-shrink: 0; background: none; color: var(--text);
}
.lang-switch { position: relative; }
.lang-switch-btn { display: flex; align-items: center; gap: 4px; font-size: 12.5px; color: var(--muted2); cursor: pointer; background: none; border: none; font-family: inherit; }
.lang-menu {
  display: none; position: absolute; top: 28px; right: 0; background: var(--card);
  border: 1px solid var(--border); border-radius: 8px; padding: 6px; min-width: 140px;
  box-shadow: 0 8px 24px rgba(0,0,0,.25); z-index: 60;
}
.lang-menu.open { display: block; }
.lang-menu a { padding: 8px 10px; border-radius: 5px; font-size: 13px; color: var(--text); cursor: pointer; display: flex; justify-content: space-between; align-items: center; }
.lang-menu a:hover { background: var(--innerCard); }
.lang-menu .check { color: var(--accent); font-size: 11px; }
.hamburger { width: 34px; height: 34px; display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 4px; cursor: pointer; flex-shrink: 0; background: none; border: none; }
@media (min-width: 1200px) { .hamburger { display: none; } }
.hamburger span { width: 18px; height: 2px; background: var(--text); display: block; }
.mobile-menu { display: none; flex-direction: column; padding: 18px 20px; border-bottom: 1px solid var(--border); background: var(--navBg); gap: 18px; font-size: 15px; }
.mobile-menu.open { display: flex; }
.mobile-menu a { color: var(--muted); border-bottom: 2px solid transparent; padding-bottom: 2px; width: fit-content; }
.mobile-menu a.active { color: var(--accent); border-bottom-color: var(--accent); }
.mobile-menu .nav-cta { display: block; text-align: center; }
@media (min-width: 1200px) { .mobile-menu { display: none !important; } }

/* ---- Buttons ---- */
.btn { display: inline-flex; align-items: center; justify-content: center; font-weight: 600; font-size: 14.5px; padding: 14px 26px; border-radius: 7px; cursor: pointer; border: none; font-family: inherit; }
.btn-primary { background: var(--accent); color: var(--accentText); }
.btn-outline { border: 1px solid var(--borderStrong); color: var(--text); background: none; }

/* ---- Cards / grids ---- */
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 24px; }
.card-lg { border-radius: 14px; }
.eyebrow { font: 600 12px 'JetBrains Mono', monospace; color: var(--accent); letter-spacing: .05em; margin-bottom: 14px; }
h2.section-title { font-weight: 700; font-size: 24px; color: var(--text); letter-spacing: -0.01em; }
@media (min-width: 768px) { h2.section-title { font-size: 32px; } }
.body-text { font-size: 15.5px; line-height: 1.65; color: var(--muted); }
@media (min-width: 768px) { .body-text { font-size: 17px; } }

/* ---- Footer ---- */
.footer { border-top: 1px solid var(--border); padding: 40px 20px 0; }
@media (min-width: 768px) { .footer { padding: 56px 32px 0; } }
@media (min-width: 1200px) { .footer { padding: 56px 56px 0; } }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 32px; padding-bottom: 44px; }
@media (min-width: 768px) { .footer-grid { grid-template-columns: 1fr 1fr 1fr; gap: 40px; } }
@media (min-width: 1200px) { .footer-grid { grid-template-columns: 1.6fr .9fr .9fr .9fr .9fr; } }
.footer-col-label { font: 600 11.5px 'JetBrains Mono', monospace; color: var(--muted2); letter-spacing: .05em; margin-bottom: 16px; }
.footer-links { display: flex; flex-direction: column; gap: 11px; }
.footer-links a { font-size: 13.5px; color: var(--muted); }
.footer-links a:hover { color: var(--text); }
.footer-bottom { border-top: 1px solid var(--border); padding: 22px 0; display: flex; flex-direction: column; gap: 10px; justify-content: space-between; font-size: 12.5px; color: var(--muted2); }
@media (min-width: 768px) { .footer-bottom { flex-direction: row; } }
.footer-bottom-links { display: flex; gap: 16px; }
.footer-bottom-links a { color: var(--muted2); }
.footer-bottom-links a:hover { color: var(--muted); }

/* ---- Home page grids ---- */
.hero { display: grid; grid-template-columns: 1fr; gap: 32px; padding: 40px 20px 32px; align-items: start; }
@media (min-width: 768px) { .hero { padding: 60px 32px 40px; gap: 48px; } }
@media (min-width: 1200px) { .hero { grid-template-columns: 1.1fr .9fr; padding: 88px 56px 60px; } }
.hero h1 { font-weight: 700; font-size: 32px; line-height: 1.12; letter-spacing: -0.02em; color: var(--text); margin-bottom: 24px; }
@media (min-width: 768px) { .hero h1 { font-size: 42px; } }
@media (min-width: 1200px) { .hero h1 { font-size: 60px; } }
.hero-stats { display: flex; flex-wrap: wrap; gap: 24px; padding-top: 28px; border-top: 1px solid var(--border); }
@media (min-width: 768px) { .hero-stats { gap: 44px; } }
.signal-card { max-width: 540px; width: 100%; justify-self: center; }
.signal-scores { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; padding-top: 18px; border-top: 1px solid var(--border); }
.signal-score-label { font-size: 11px; color: var(--muted2); margin-bottom: 4px; }
.signal-score-value { font-size: 16px; font-weight: 700; color: var(--text); }

.ticker-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 22px; }
@media (min-width: 768px) { .ticker-grid { grid-template-columns: repeat(3,1fr); } }
@media (min-width: 1200px) { .ticker-grid { grid-template-columns: repeat(5,1fr); } }

.problem-layout { display: grid; grid-template-columns: 1fr; gap: 48px; align-items: start; margin-bottom: 56px; }
@media (min-width: 1200px) { .problem-layout { grid-template-columns: 1.15fr .85fr; } }
.problem-grid { display: grid; grid-template-columns: 1fr; gap: 16px; align-self: center; }
@media (min-width: 768px) { .problem-grid { grid-template-columns: repeat(2,1fr); } }

.pillars-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 768px) { .pillars-grid { grid-template-columns: repeat(2,1fr); } }
@media (min-width: 1200px) { .pillars-grid { grid-template-columns: repeat(3,1fr); } }

.steps-grid { display: grid; grid-template-columns: 1fr; gap: 28px; }
@media (min-width: 768px) { .steps-grid { grid-template-columns: repeat(2,1fr); } }
@media (min-width: 1200px) { .steps-grid { grid-template-columns: repeat(5,1fr); } }

.signal-demo-grid { display: grid; grid-template-columns: 1fr; gap: 40px; }
@media (min-width: 1200px) { .signal-demo-grid { grid-template-columns: 1.3fr 1fr; } }
.signal-text-grid { display: grid; grid-template-columns: 1fr; gap: 24px; }
@media (min-width: 1200px) { .signal-text-grid { grid-template-columns: repeat(2,1fr); } }

.layers-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 14px; }
@media (min-width: 768px) { .layers-grid { grid-template-columns: repeat(3,1fr); } }
@media (min-width: 1200px) { .layers-grid { grid-template-columns: repeat(5,1fr); } }

.pricing-grid { display: grid; grid-template-columns: 1fr; gap: 18px; }
@media (min-width: 768px) { .pricing-grid { grid-template-columns: repeat(3,1fr); } }
.pricing-card { border-radius: 12px; padding: 28px; display: flex; flex-direction: column; border: 1px solid var(--border); }
.pricing-feature { display: flex; align-items: flex-start; gap: 8px; font-size: 13px; padding: 8px 0; border-bottom: 1px solid var(--border); color: var(--muted); }
.pricing-btn { margin-top: 20px; text-align: center; padding: 11px; border-radius: 8px; font-size: 13.5px; font-weight: 700; cursor: pointer; border: none; font-family: inherit; }
.seat-stepper { display: flex; align-items: center; gap: 10px; margin: 8px 0 2px; }
.seat-btn { width: 26px; height: 26px; border-radius: 6px; border: 1px solid var(--borderStrong); display: flex; align-items: center; justify-content: center; cursor: pointer; color: var(--text); font-size: 15px; user-select: none; flex-shrink: 0; background: none; }
.billing-row { display: flex; align-items: center; gap: 12px; margin-bottom: 32px; }
.toggle-track { position: relative; width: 44px; height: 24px; background: var(--innerCard); border: 1px solid var(--borderStrong); border-radius: 13px; cursor: pointer; flex-shrink: 0; }
.toggle-knob { position: absolute; top: 2px; left: 3px; width: 18px; height: 18px; border-radius: 50%; background: var(--text); transition: left .2s; }
.save-badge { font-size: 11px; font-weight: 800; color: var(--accentText); background: var(--accent); padding: 3px 10px; border-radius: 10px; display: none; }
.coming-soon-strip { margin-top: 24px; padding: 18px 22px; border: 1px dashed var(--borderStrong); border-radius: 12px; display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.coming-soon-pill { font-size: 12px; color: var(--muted); background: var(--innerCard); border: 1px solid var(--border); padding: 5px 10px; border-radius: 20px; white-space: nowrap; }
.team-panel { display: none; max-width: 600px; margin: 32px auto 0; background: var(--card); border: 1px solid var(--borderStrong); border-radius: 14px; padding: 30px; }
.team-panel input, .team-panel textarea { width: 100%; background: var(--innerCard); border: 1px solid var(--borderStrong); border-radius: 8px; padding: 10px 14px; color: var(--text); font-size: 13.5px; font-family: inherit; margin-bottom: 12px; }
.team-form-grid { display: grid; grid-template-columns: 1fr; gap: 12px; }
@media (min-width: 768px) { .team-form-grid { grid-template-columns: 1fr 1fr; } }

.lang-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 14px; }
@media (min-width: 768px) { .lang-grid { grid-template-columns: repeat(3,1fr); } }
@media (min-width: 1200px) { .lang-grid { grid-template-columns: repeat(5,1fr); } }

.subscribe-box { border-radius: 14px; padding: 24px 18px; text-align: center; background: var(--card); border: 1px solid var(--border); }
@media (min-width: 768px) { .subscribe-box { padding: 36px 30px; } }
.subscribe-form-row { display: flex; gap: 10px; max-width: 440px; margin: 0 auto; flex-direction: column; }
@media (min-width: 768px) { .subscribe-form-row { flex-direction: row; } }
.subscribe-form-row input { flex: 1; background: var(--innerCard); border: 1px solid var(--borderStrong); border-radius: 8px; padding: 12px 16px; color: var(--text); font-size: 14px; font-family: inherit; }
.subscribe-form-row button { background: var(--accent); color: var(--accentText); font-weight: 700; font-size: 14px; padding: 12px 22px; border-radius: 8px; cursor: pointer; white-space: nowrap; border: none; font-family: inherit; }

.compare-table { width: 100%; border-collapse: collapse; font-size: 13px; min-width: 600px; }
.compare-table th { text-align: left; padding: 10px 14px; font: 700 10.5px 'JetBrains Mono', monospace; letter-spacing: .06em; text-transform: uppercase; color: var(--muted2); border-bottom: 1px solid var(--borderStrong); }
.compare-table td { padding: 12px 14px; border-bottom: 1px solid var(--border); }

/* ---- Intelligence / generic content pages ---- */
.section-panel { background: var(--card); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 56px 20px; }
@media (min-width: 768px) { .section-panel { padding: 90px 32px; } }
@media (min-width: 1200px) { .section-panel { padding: 90px 56px; } }
.what-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 768px) { .what-grid { grid-template-columns: repeat(2,1fr); } }
@media (min-width: 1200px) { .what-grid { grid-template-columns: repeat(3,1fr); } }
.format-grid { display: grid; grid-template-columns: 1fr; gap: 32px; align-items: start; }
@media (min-width: 1200px) { .format-grid { grid-template-columns: 1fr 1fr; } }
.freq-grid { display: grid; grid-template-columns: 1fr; gap: 18px; }
@media (min-width: 768px) { .freq-grid { grid-template-columns: repeat(2,1fr); } }
@media (min-width: 1200px) { .freq-grid { grid-template-columns: repeat(3,1fr); } }
.access-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 768px) { .access-grid { grid-template-columns: repeat(3,1fr); } }
.access-card { border-radius: 12px; padding: 32px 28px; position: relative; display: flex; flex-direction: column; border: 1px solid var(--border); }
.access-badge { position: absolute; top: -13px; left: 28px; background: var(--accent); color: var(--accentText); font: 700 10.5px 'JetBrains Mono', monospace; letter-spacing: .05em; padding: 3px 12px; border-radius: 20px; }

/* Reusable long-form legal/content page layout */
.doc-page { max-width: 760px; margin: 0 auto; padding: 56px 20px 90px; }
@media (min-width: 768px) { .doc-page { padding: 72px 32px 100px; } }
.doc-page h1 { font-family:'Outfit','Noto Sans KR',sans-serif; font-weight: 700; font-size: 34px; color: var(--text); margin-bottom: 10px; }
.doc-page .doc-date { font-size: 13px; color: var(--muted2); margin-bottom: 40px; }
.doc-page h2 { font-family:'Outfit','Noto Sans KR',sans-serif; font-weight: 700; font-size: 19px; color: var(--text); margin: 36px 0 12px; }
.doc-page p { font-size: 14.5px; line-height: 1.75; color: var(--muted); margin-bottom: 12px; }
.doc-page ul { margin: 0 0 12px 20px; }
.doc-page li { font-size: 14.5px; line-height: 1.75; color: var(--muted); margin-bottom: 6px; }
.doc-page a { color: var(--accent); text-decoration: underline; }

/* ---- About page ---- */
.about-hero { display: grid; grid-template-columns: 1fr; gap: 24px; padding: 56px 20px 40px; }
@media (min-width: 768px) { .about-hero { padding: 72px 32px 48px; } }
@media (min-width: 1200px) { .about-hero { grid-template-columns: 1.4fr 1fr; padding: 88px 56px 56px; } }
.pipeline-flow { display: grid; grid-template-columns: 1fr; gap: 24px; }
@media (min-width: 1200px) { .pipeline-flow { grid-template-columns: repeat(5,1fr); } }
.pipeline-step { display: flex; gap: 14px; align-items: flex-start; }
@media (min-width: 1200px) { .pipeline-step { flex-direction: column; gap: 10px; } }
.pipeline-badge { width: 32px; height: 32px; border-radius: 50%; background: var(--accent); color: var(--accentText); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 14px; flex-shrink: 0; }
.contact-form input, .contact-form textarea { width: 100%; background: var(--innerCard); border: 1px solid var(--borderStrong); border-radius: 8px; padding: 10px 14px; color: var(--text); font-size: 13.5px; font-family: inherit; margin-bottom: 12px; }
.contact-form label { display: block; font-size: 12px; color: var(--muted2); margin-bottom: 4px; }

/* ---- 10-Layer Map page ---- */
.layer-card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 24px; }
.layer-card-head { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 16px; }
.layer-id-badge { font-family: 'JetBrains Mono', monospace; font-weight: 700; font-size: 12px; color: var(--accent); background: var(--accentSoft); padding: 5px 11px; border-radius: 6px; flex-shrink: 0; letter-spacing: .04em; }
.layer-body-grid { display: grid; grid-template-columns: 1fr; gap: 24px; }
.layer-signals-box { background: var(--innerCard); border-radius: 10px; padding: 16px; }
.layer-stack-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 1200px) { .layer-stack-grid { grid-template-columns: repeat(2,1fr); } }
.loops-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 768px) { .loops-grid { grid-template-columns: repeat(2,1fr); } }
@media (min-width: 1200px) { .loops-grid { grid-template-columns: repeat(3,1fr); } }
.how-grid { display: grid; grid-template-columns: 1fr; gap: 40px; align-items: center; }
@media (min-width: 1200px) { .how-grid { grid-template-columns: 2fr 1fr; } }
.stat-mini-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 14px; }

/* ---- Post card / listing grids (Blog/Weekly/Analysis index) ---- */
.post-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 768px) { .post-grid { grid-template-columns: repeat(2,1fr); } }
@media (min-width: 1200px) { .post-grid { grid-template-columns: repeat(3,1fr); } }
.post-card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 22px; display: flex; flex-direction: column; height: 100%; }
.post-card-tag { display: inline-block; font: 600 10.5px 'JetBrains Mono', monospace; letter-spacing: .04em; color: var(--accent); background: var(--accentSoft); padding: 3px 10px; border-radius: 4px; margin-bottom: 12px; align-self: flex-start; }
.post-card-title { font-weight: 600; font-size: 16px; color: var(--text); margin-bottom: 8px; line-height: 1.4; }
.post-card-excerpt { font-size: 13px; color: var(--muted); line-height: 1.6; flex: 1; margin-bottom: 12px; }
.post-card-meta { font-size: 11.5px; color: var(--muted2); }
.archive-row { display: flex; flex-wrap: wrap; align-items: baseline; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--border); }
.archive-row .date { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--muted2); min-width: 90px; }
.archive-row .title { font-size: 14px; color: var(--text); flex: 1; }
.archive-row .tag { font-size: 11px; color: var(--accent); }

/* ---- Article / post-detail page ---- */
.article-page { max-width: 760px; margin: 0 auto; padding: 56px 20px 40px; }
@media (min-width: 768px) { .article-page { padding: 72px 32px 48px; } }
.article-header .tag { font: 600 11px 'JetBrains Mono', monospace; letter-spacing: .04em; color: var(--accent); background: var(--accentSoft); padding: 4px 12px; border-radius: 4px; display: inline-block; margin-bottom: 16px; }
.article-header h1 { font-family: 'Outfit','Noto Sans KR',sans-serif; font-weight: 700; font-size: 32px; color: var(--text); margin-bottom: 16px; line-height: 1.2; }
@media (min-width: 768px) { .article-header h1 { font-size: 40px; } }
.article-meta { display: flex; flex-wrap: wrap; gap: 16px; font-size: 13px; color: var(--muted2); margin-bottom: 32px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.article-body h2 { font-family: 'Outfit','Noto Sans KR',sans-serif; font-weight: 700; font-size: 21px; color: var(--text); margin: 32px 0 14px; }
.article-body p { font-size: 15.5px; line-height: 1.8; color: var(--muted); margin-bottom: 16px; }
.article-body blockquote { border-left: 3px solid var(--accent); padding-left: 18px; margin: 20px 0; font-style: italic; color: var(--sub); font-size: 15px; }
.post-nav { display: flex; justify-content: space-between; gap: 16px; margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--border); }
.post-nav a { font-size: 13.5px; color: var(--muted); max-width: 45%; }
.post-nav a:hover { color: var(--accent); }

/* ---- Scroll-to-top ---- */
#scroll-top {
  position: fixed; bottom: 24px; right: 24px; width: 42px; height: 42px; border-radius: 50%;
  background: var(--card); border: 1px solid var(--borderStrong); color: var(--text);
  display: none; align-items: center; justify-content: center; cursor: pointer; z-index: 40;
  box-shadow: 0 4px 16px rgba(0,0,0,.2);
}
#scroll-top.show { display: flex; }