:root {
  --ink: #17191e;
  --muted: #62666d;
  --paper: #f5f2eb;
  --line: #d9d4ca;
  --accent: #087068;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

.hub-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(100% - 36px, 1180px);
  min-height: 68px;
  margin: 0 auto;
  font-size: 12px;
}
.hub-header .brand { display: inline-flex; align-items: center; gap: 9px; font-size: 19px; }
.brand-mark { width: 28px; height: 28px; background: url("../../favicon.svg") center / contain no-repeat; }
.hub-header > a:last-child { color: var(--muted); font-weight: 700; text-decoration: underline; text-underline-offset: 4px; }

main { outline: none; }
.hub-hero {
  position: relative;
  width: min(100% - 36px, 1180px);
  min-height: 620px;
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid #c9c5bc;
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 28px 70px rgba(23, 25, 30, .13);
}
.hub-hero > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hub-hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(255,255,255,.98) 0%, rgba(255,255,255,.94) 24%, rgba(255,255,255,.08) 54%, transparent 70%); pointer-events: none; }
.hub-hero-copy { position: relative; z-index: 1; width: min(47%, 500px); padding: clamp(56px, 8vw, 98px) clamp(26px, 5vw, 64px); }
.hub-hero-copy > p { margin: 0 0 18px; color: var(--accent); font-size: 11px; font-weight: 900; letter-spacing: .16em; }
.hub-hero h1 { margin: 0; font-family: "Hiragino Mincho ProN", "Yu Mincho", YuMincho, serif; font-size: clamp(2.6rem, 5.5vw, 5.2rem); line-height: 1.2; letter-spacing: -.06em; }
.hub-hero h1 em { color: var(--accent); font-style: normal; }
.hub-hero-copy > span { display: block; margin-top: 28px; color: #3d4147; font-size: clamp(14px, 1.5vw, 17px); font-weight: 700; line-height: 2; }
.hub-hero-copy > a { display: inline-flex; margin-top: 32px; padding: 15px 24px; border-radius: 999px; background: var(--ink); color: #fff; font-size: 14px; font-weight: 800; }
.hub-hero-copy > a:hover { background: var(--accent); }

.hub-principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: min(100% - 36px, 980px);
  margin: 42px auto 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.hub-principles div { display: grid; gap: 5px; padding: 24px; text-align: center; }
.hub-principles div + div { border-left: 1px solid var(--line); }
.hub-principles strong { font-family: "Hiragino Mincho ProN", "Yu Mincho", YuMincho, serif; font-size: 20px; }
.hub-principles span { color: var(--muted); font-size: 11px; }

.story-index { width: min(100% - 36px, 1180px); margin: 110px auto; }
.section-kicker { margin: 0; color: var(--accent); font-size: 11px; font-weight: 900; letter-spacing: .16em; }
.story-index > h2 { margin: 12px 0 0; font-family: "Hiragino Mincho ProN", "Yu Mincho", YuMincho, serif; font-size: clamp(2rem, 4vw, 3.7rem); letter-spacing: -.05em; }
.section-lead { max-width: 680px; margin: 20px 0 42px; color: var(--muted); font-size: 14px; line-height: 1.9; }
.story-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px; }
.story-card { min-width: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: #fff; transition: transform .18s ease, box-shadow .18s ease; }
.story-card:hover { transform: translateY(-5px); box-shadow: 0 20px 42px rgba(23,25,30,.12); }
.story-card a { display: block; height: 100%; }
.story-card figure { height: 250px; margin: 0; overflow: hidden; background: #ddd; }
.story-card img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: top; filter: grayscale(1); transition: transform .25s ease; }
.story-card:hover img { transform: scale(1.025); }
.story-card-copy { padding: 22px; }
.story-card-copy > span { display: block; min-height: 2.8em; color: var(--accent); font-size: 11px; font-weight: 900; line-height: 1.5; }
.story-card h2 { margin: 9px 0 0; font-size: 20px; line-height: 1.55; letter-spacing: -.025em; }
.story-card p { min-height: 4.8em; margin: 13px 0 18px; color: var(--muted); font-size: 13px; line-height: 1.8; }
.story-card small { color: var(--ink); font-size: 11px; font-weight: 800; }
.story-card small b { margin-left: 6px; color: var(--accent); font-size: 15px; }

.hub-closing { padding: 100px 24px; background: var(--ink); color: #fff; text-align: center; }
.hub-closing p { margin: 0; color: #a8d8d3; font-size: 12px; font-weight: 800; letter-spacing: .08em; }
.hub-closing h2 { margin: 16px 0 30px; font-family: "Hiragino Mincho ProN", "Yu Mincho", YuMincho, serif; font-size: clamp(2rem, 5vw, 4rem); line-height: 1.45; letter-spacing: -.04em; }
.hub-closing a { display: inline-flex; padding: 15px 24px; border: 1px solid #fff; border-radius: 999px; font-size: 14px; font-weight: 800; }
.hub-closing a:hover { border-color: #8dd4cd; background: #8dd4cd; color: var(--ink); }
footer { padding: 44px 20px; color: var(--muted); font-size: 12px; text-align: center; }
footer p { margin: 0 0 10px; }
footer small { font-size: 10px; }

@media (max-width: 820px) {
  .hub-hero { min-height: 700px; }
  .hub-hero > img { height: 54%; object-position: 66% center; }
  .hub-hero::after { background: linear-gradient(0deg, #fff 0%, #fff 48%, rgba(255,255,255,.05) 62%, transparent 100%); }
  .hub-hero-copy { width: 100%; padding-top: 390px; text-align: center; }
  .story-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 560px) {
  .hub-header { width: min(100% - 28px, 1180px); }
  .hub-header > a:last-child { max-width: 120px; text-align: right; }
  .hub-hero { width: 100%; min-height: 680px; border-right: 0; border-left: 0; border-radius: 0; }
  .hub-hero-copy { padding: 355px 22px 42px; }
  .hub-hero h1 { font-size: clamp(2.35rem, 12vw, 3.3rem); }
  .hub-hero-copy > span br { display: none; }
  .hub-principles { grid-template-columns: 1fr; }
  .hub-principles div + div { border-top: 1px solid var(--line); border-left: 0; }
  .story-index { margin: 76px auto; }
  .story-grid { grid-template-columns: 1fr; gap: 18px; }
  .story-card a { display: grid; grid-template-columns: 124px 1fr; }
  .story-card figure { height: 100%; min-height: 210px; }
  .story-card-copy { padding: 17px 16px; }
  .story-card-copy > span { min-height: 0; }
  .story-card h2 { font-size: 16px; }
  .story-card p { min-height: 0; margin-bottom: 12px; font-size: 11px; }
  .hub-closing { padding: 76px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .story-card,
  .story-card img { transition: none; }
}