:root {
  --ink: #07111f;
  --navy: #0d1b2e;
  --blue: #203656;
  --ivory: #f7f2e8;
  --paper: #fffaf1;
  --gold: #c3a36d;
  --red: #9f332b;
  --sage: #6f8476;
  --line: rgba(255, 255, 255, 0.13);
  --muted: #6f7785;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ivory);
  background: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}
a { color: inherit; text-decoration: none; }
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  min-height: 86px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(20px, 5vw, 72px);
  background: rgba(247, 242, 232, 0.97);
  color: var(--ink);
  border-bottom: 1px solid rgba(7, 17, 31, 0.08);
}
.brand-link { display: inline-flex; align-items: center; flex: 0 0 auto; }
.brand-logo { width: min(220px, 52vw); height: auto; display: block; }
.nav-links { display: flex; align-items: center; gap: clamp(14px, 3vw, 34px); overflow-x: auto; white-space: nowrap; font-size: 11px; font-weight: 800; text-transform: uppercase; color: #4d5564; }
.nav-links a:hover { color: var(--red); }
.hero {
  min-height: calc(100vh - 86px);
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: clamp(28px, 6vw, 84px);
  align-items: center;
  padding: clamp(46px, 8vw, 96px) clamp(20px, 5vw, 72px);
  background:
    linear-gradient(120deg, rgba(9, 19, 36, .97), rgba(27, 43, 68, .88)),
    url("../ChatGPT Image 2026年6月22日 22_48_52.png") center / cover no-repeat;
  border-bottom: 1px solid var(--line);
}
.eyebrow, .eyebrow-link, .date-line { display: block; color: var(--gold); font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: 0; margin-bottom: 18px; }
.hero h1, .section-heading h2, .signal-card h2, .article-shell h1 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
  letter-spacing: 0;
}
.hero h1 { font-size: clamp(44px, 7vw, 86px); line-height: 0.98; max-width: 920px; margin: 0 0 28px; }
.hero h1 em { color: var(--gold); font-style: italic; }
.hero .lead { color: #d4dbe5; font-size: clamp(17px, 2vw, 22px); line-height: 1.7; max-width: 720px; margin: 0 0 34px; }
.hero-actions, .button-row { display: flex; flex-wrap: wrap; gap: 12px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 20px; border: 1px solid rgba(247, 242, 232, .26); font-size: 11px; font-weight: 800; text-transform: uppercase; color: var(--ivory); }
.btn.primary { background: var(--gold); border-color: var(--gold); color: var(--ink); }
.signal-card {
  background: rgba(247, 242, 232, 0.95);
  color: var(--ink);
  padding: clamp(24px, 4vw, 38px);
  border: 1px solid rgba(195, 163, 109, .42);
  box-shadow: 0 28px 60px rgba(0,0,0,.22);
}
.signal-card img { width: 100%; display: block; margin-bottom: 24px; border: 1px solid rgba(13, 27, 46, .12); }
.signal-card h2 { font-size: clamp(30px, 4vw, 48px); line-height: 1.02; margin: 0 0 16px; }
.signal-card p { color: #465064; line-height: 1.7; margin: 0 0 24px; }
.ticker { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid rgba(255,255,255,.1); border-bottom: 1px solid rgba(255,255,255,.1); background: #101f34; }
.ticker div { padding: 18px clamp(16px, 3vw, 36px); border-right: 1px solid rgba(255,255,255,.1); }
.ticker span { display: block; color: var(--gold); font-size: 11px; font-weight: 800; text-transform: uppercase; margin-bottom: 6px; }
.ticker strong { font-family: Georgia, "Times New Roman", serif; font-size: clamp(18px, 2vw, 24px); font-weight: 400; }
.section { padding: clamp(58px, 8vw, 104px) clamp(20px, 5vw, 72px); }
.section.ivory { background: var(--paper); color: var(--ink); }
.section.sage { background: #eef0ea; color: var(--ink); }
.section-heading { max-width: 760px; margin-bottom: 34px; }
.section-heading h2 { font-size: clamp(34px, 5vw, 62px); line-height: 1.05; margin: 0 0 14px; }
.section-heading p { color: var(--muted); line-height: 1.7; margin: 0; }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.feature, .brief, .linkedin-card {
  min-height: 100%;
  padding: 26px;
  border: 1px solid rgba(13, 27, 46, .13);
  background: rgba(255,255,255,.55);
}
.feature.dark, .brief.dark {
  background: rgba(255,255,255,.05);
  border-color: var(--line);
}
.feature span, .brief span, .linkedin-card span { display: block; color: var(--red); font-size: 11px; font-weight: 800; text-transform: uppercase; margin-bottom: 18px; }
.feature h3, .brief h3, .linkedin-card h3 { font-size: 22px; line-height: 1.2; margin: 0 0 12px; color: inherit; }
.feature p, .brief p, .linkedin-card p { color: #5f6977; line-height: 1.65; margin: 0 0 18px; }
.feature.dark p, .brief.dark p { color: #b8c2cf; }
.read-link { color: var(--red); font-size: 11px; font-weight: 900; text-transform: uppercase; }
.signal-band { background: #122640; }
.brief-board { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.brief.dark span { color: var(--gold); }
.linkedin-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 26px; align-items: start; }
.linkedin-card img { width: 100%; display: block; border: 1px solid rgba(13, 27, 46, .14); margin-bottom: 18px; }
.footer { padding: 42px clamp(20px, 5vw, 72px); background: #08111f; border-top: 1px solid var(--line); color: #aeb8c6; display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer-logo { width: 190px; height: auto; display: block; }
.footer p { margin: 0; font-size: 13px; }
.article-main { background: var(--paper); color: var(--ink); min-height: 70vh; }
.article-shell { width: min(820px, calc(100% - 40px)); margin: 0 auto; padding: clamp(56px, 8vw, 96px) 0; }
.article-shell h1 { font-size: clamp(40px, 6vw, 68px); line-height: 1; margin: 0 0 18px; }
.article-shell .lead { color: #4f5a68; font-size: 20px; line-height: 1.65; margin: 0 0 18px; }
.article-meta { color: var(--red); font-size: 12px; font-weight: 800; text-transform: uppercase; margin-bottom: 42px; }
.prose { color: #273243; font-size: 17px; line-height: 1.82; }
.prose p { margin: 0 0 22px; }
.prose h3 { font-family: Georgia, "Times New Roman", serif; font-size: 30px; font-weight: 400; margin: 38px 0 14px; }
.prose ul { padding-left: 22px; margin: 0 0 24px; }
.prose li { margin-bottom: 10px; }
.prose a { color: var(--red); text-decoration: underline; text-underline-offset: 3px; }
.next-panel { margin-top: 46px; padding: 28px; background: #102037; color: var(--ivory); }
.next-panel span { color: var(--gold); font-size: 11px; font-weight: 800; text-transform: uppercase; }
.next-panel p { line-height: 1.7; color: #d4dbe5; }
.next-panel a { color: var(--gold); font-weight: 800; text-transform: uppercase; font-size: 12px; }
@media (max-width: 980px) {
  .hero, .linkedin-layout { grid-template-columns: 1fr; }
  .grid, .brief-board, .ticker { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .topbar { align-items: flex-start; flex-direction: column; }
  .grid, .brief-board, .ticker { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
}