@import url('https://fonts.googleapis.com/css2?family=Shippori+Mincho:wght@400;600;800&family=Zen+Kaku+Gothic+New:wght@400;500;700&family=Space+Grotesk:wght@400;500;600&display=swap');

  :root {
    --paper: #f2ede1;
    --paper-raised: #faf7ef;
    --ink: #191c22;
    --ink-soft: #5b564c;
    --ink-faint: #8c8676;
    --accent: #b5562b;
    --accent-ink: #f2ede1;
    --accent-soft: #e7d2ba;
    --steel: #3f6280;
    --line: #d9d0ba;
    --line-strong: #c7bb9d;
    --shadow: 220 15% 10%;
  }

  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      --paper: #13161c;
      --paper-raised: #1a1e26;
      --ink: #ece6d6;
      --ink-soft: #a49d8a;
      --ink-faint: #726c5c;
      --accent: #dd8350;
      --accent-ink: #191305;
      --accent-soft: #3a2a1c;
      --steel: #86aac8;
      --line: #2b2f38;
      --line-strong: #3a3f4a;
    }
  }

  :root[data-theme="dark"] {
    --paper: #13161c;
    --paper-raised: #1a1e26;
    --ink: #ece6d6;
    --ink-soft: #a49d8a;
    --ink-faint: #726c5c;
    --accent: #dd8350;
    --accent-ink: #191305;
    --accent-soft: #3a2a1c;
    --steel: #86aac8;
    --line: #2b2f38;
    --line-strong: #3a3f4a;
  }

  * { box-sizing: border-box; }

  html { scroll-behavior: smooth; }

  body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: "Zen Kaku Gothic New", "Hiragino Sans", "Noto Sans JP", sans-serif;
    font-size: 16px;
    line-height: 1.85;
    -webkit-font-smoothing: antialiased;
  }

  h1, h2, h3 { font-family: "Shippori Mincho", "Hiragino Mincho ProN", serif; font-weight: 700; text-wrap: balance; margin: 0; }

  .num { font-family: "Space Grotesk", "Zen Kaku Gothic New", sans-serif; font-variant-numeric: tabular-nums; }

  a { color: inherit; }

  .wrap { max-width: 1040px; margin: 0 auto; padding: 0 28px; }

  /* ---------- contour-arc motif ---------- */
  .arcs { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
  .arcs svg { position: absolute; }

  /* ---------- hero video background ---------- */
  .hero-bg { position: absolute; inset: 0; overflow: hidden; z-index: 0; background: #0c0d0b; }
  .hero-bg-video, .hero-bg-poster { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 38%; filter: saturate(1.06) contrast(1.04); }
  .hero-bg-poster { display: none; }
  .hero-scrim { position: absolute; inset: 0; background: linear-gradient(195deg, rgba(14,15,13,.6) 0%, rgba(14,15,13,.74) 45%, var(--paper) 96%); }
  @media (prefers-reduced-motion: reduce) { .hero-bg-video { display: none; } .hero-bg-poster { display: block; } }

  /* ---------- nav ---------- */
  header.site {
    position: sticky; top: 0; z-index: 40;
    background: color-mix(in srgb, var(--paper) 88%, transparent);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--line);
  }
  .navrow { display: flex; align-items: center; justify-content: space-between; padding: 16px 28px; max-width: 1040px; margin: 0 auto; position: relative; }
  .brand { display: flex; align-items: baseline; gap: 10px; font-family: "Shippori Mincho", serif; font-weight: 700; font-size: 1.05rem; letter-spacing: .02em; white-space: nowrap; }
  .brand span { font-family: "Space Grotesk", sans-serif; font-size: .62rem; font-weight: 500; letter-spacing: .14em; color: var(--accent); text-transform: uppercase; }
  nav.links { display: flex; gap: 26px; font-size: .86rem; }
  nav.links a { text-decoration: none; color: var(--ink-soft); border-bottom: 1px solid transparent; padding-bottom: 3px; transition: color .15s, border-color .15s; }
  nav.links a:hover { color: var(--ink); border-color: var(--accent); }
  .navcta { display: inline-flex; align-items: center; gap: 6px; font-size: .8rem; font-weight: 700; text-decoration: none; color: var(--accent-ink); background: var(--accent); padding: 9px 16px; border-radius: 2px; letter-spacing: .02em; white-space: nowrap; flex: 0 0 auto; }
  .hamburger { display: none; }
  @media (max-width: 760px) {
    .navrow { padding: 13px 20px; gap: 12px; }
    .brand { font-size: .88rem; gap: 6px; order: 0; }
    .brand span { display: none; }
    .navcta { font-size: .7rem; padding: 8px 12px; order: 1; }
    .hamburger {
      display: flex; flex-direction: column; align-items: center; justify-content: center;
      gap: 4px; width: 38px; height: 38px; flex: 0 0 auto; order: -1;
      border: 1px solid var(--line-strong); border-radius: 2px; background: transparent;
      padding: 0; cursor: pointer; -webkit-tap-highlight-color: transparent;
    }
    .hamburger span { display: block; width: 16px; height: 1.5px; background: var(--ink); transition: transform .2s, opacity .2s; }
    .hamburger.active span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
    .hamburger.active span:nth-child(2) { opacity: 0; }
    .hamburger.active span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }
    nav.links {
      display: none; position: absolute; top: 100%; left: 0; right: 0;
      flex-direction: column; gap: 0; margin: 0; padding: 6px 20px 14px;
      background: var(--paper-raised); border-bottom: 1px solid var(--line);
      box-shadow: 0 12px 24px rgba(0,0,0,.08);
    }
    nav.links.open { display: flex; }
    nav.links a { padding: 13px 2px; font-size: .92rem; border-bottom: 1px solid var(--line); }
    nav.links a:last-child { border-bottom: none; }
  }

  /* ---------- hero ---------- */
  .hero { position: relative; padding: 108px 0 76px; overflow: hidden; border-bottom: 1px solid var(--line); color: #f2ede1; }
  .eyebrow { font-family: "Space Grotesk", sans-serif; font-size: .72rem; letter-spacing: .22em; text-transform: uppercase; color: var(--accent); display: flex; align-items: center; gap: 10px; margin-bottom: 22px; }
  .eyebrow::before { content: ""; width: 30px; height: 1px; background: var(--accent); }
  .hero h1 { font-size: clamp(2.6rem, 6vw, 4.4rem); line-height: 1.08; letter-spacing: .01em; color: #f2ede1; }
  .hero .sub { font-family: "Shippori Mincho", serif; font-size: clamp(1.1rem, 2.4vw, 1.5rem); color: rgba(242,237,225,.86); margin-top: 14px; }
  .hero .lead { max-width: 46em; margin-top: 26px; color: rgba(242,237,225,.72); font-size: 1.02rem; }
  .hero .btn-outline { border-color: rgba(242,237,225,.4); color: #f2ede1; }
  .hero .stat-row { border-top-color: rgba(242,237,225,.25); }
  .hero .stat .label { color: rgba(242,237,225,.6); }
  .hero-actions { display: flex; gap: 14px; margin-top: 36px; flex-wrap: wrap; }
  .btn { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; font-size: .92rem; font-weight: 700; padding: 13px 24px; border-radius: 2px; letter-spacing: .01em; }
  .btn-solid { background: var(--ink); color: var(--paper); }
  .btn-outline { border: 1px solid var(--line-strong); color: var(--ink); }
  .btn-accent { background: var(--accent); color: var(--accent-ink); }

  .stat-row { display: grid; grid-template-columns: repeat(3, auto); gap: 40px; margin-top: 56px; padding-top: 32px; border-top: 1px solid var(--line); max-width: 640px; }
  .hero-row { display: flex; align-items: flex-start; justify-content: space-between; gap: 56px; }
  .hero-text { flex: 1 1 auto; min-width: 0; }
  .hero-portrait { flex: 0 0 auto; width: 148px; height: 148px; border-radius: 50%; padding: 5px; background: var(--paper); border: 1px solid rgba(242,237,225,.5); position: relative; box-shadow: 0 10px 30px rgba(0,0,0,.35); }
  .hero-portrait::before { content: ""; position: absolute; inset: -9px; border: 1px solid var(--accent); border-radius: 50%; opacity: .75; }
  .hero-portrait img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; display: block; }
  @media (max-width: 760px) { .hero-row { flex-direction: column-reverse; gap: 28px; } .hero-portrait { width: 108px; height: 108px; } }
  .stat .num { display: block; font-size: 1.9rem; font-weight: 600; }
  .stat .label { font-size: .76rem; color: var(--ink-faint); letter-spacing: .06em; margin-top: 2px; }
  @media (max-width: 600px) { .stat-row { grid-template-columns: repeat(3, 1fr); gap: 18px; } }

  /* ---------- section shell ---------- */
  section { padding: 84px 0; border-bottom: 1px solid var(--line); position: relative; }
  section:last-of-type { border-bottom: none; }
  .kicker { display: flex; align-items: center; gap: 14px; margin-bottom: 40px; }
  .kicker .idx { font-family: "Space Grotesk", sans-serif; font-size: .76rem; color: var(--ink-faint); letter-spacing: .1em; }
  .kicker h2 { font-size: clamp(1.5rem, 3vw, 1.9rem); }
  .kicker::after { content: ""; flex: 1; height: 1px; background: var(--line); }

  /* ---------- profile spec sheet ---------- */
  .spec-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; border-top: 1px solid var(--line); }
  .spec-item { display: grid; grid-template-columns: 140px 1fr; gap: 18px; padding: 18px 0; border-bottom: 1px solid var(--line); }
  .spec-item:nth-child(odd) { padding-right: 28px; }
  .spec-item:nth-child(even) { padding-left: 28px; }
  .spec-item dt { font-size: .78rem; color: var(--ink-faint); letter-spacing: .08em; padding-top: 2px; }
  .spec-item dd { margin: 0; font-size: .98rem; }
  @media (max-width: 700px) {
    .spec-grid { grid-template-columns: 1fr; }
    .spec-item:nth-child(even) { padding-left: 0; }
    .spec-item { grid-template-columns: 110px 1fr; }
  }

  /* ---------- achievements timeline ---------- */
  .timeline { position: relative; padding-left: 28px; border-left: 1px solid var(--line-strong); display: flex; flex-direction: column; gap: 30px; }
  .tl-item { position: relative; }
  .tl-item::before { content: ""; position: absolute; left: -33px; top: 6px; width: 9px; height: 9px; border-radius: 50%; background: var(--paper); border: 2px solid var(--accent); }
  .tl-item .yr { font-family: "Space Grotesk", sans-serif; font-size: .82rem; color: var(--accent); font-weight: 600; letter-spacing: .04em; }
  .tl-item .ev { margin-top: 4px; font-size: 1rem; }
  .tl-item.now .ev { font-weight: 700; }
  .tl-item .tag { display: inline-block; margin-left: 10px; font-size: .68rem; letter-spacing: .08em; color: var(--steel); border: 1px solid var(--steel); padding: 1px 8px; border-radius: 20px; vertical-align: 2px; }

  /* ---------- philosophy ---------- */
  .phil-quote { font-family: "Shippori Mincho", serif; font-size: clamp(1.25rem, 3vw, 1.7rem); line-height: 1.7; color: var(--ink); border-left: 3px solid var(--accent); padding-left: 26px; max-width: 34em; }
  .phil-body { margin-top: 30px; max-width: 42em; color: var(--ink-soft); }
  .phil-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
  .phil-tags span { font-size: .78rem; border: 1px solid var(--line-strong); border-radius: 20px; padding: 5px 14px; color: var(--ink-soft); }

  /* ---------- merged profile subsections ---------- */
  .subsection { margin-top: 64px; padding-top: 44px; border-top: 1px solid var(--line); }
  .sub-label { font-family: "Space Grotesk", sans-serif; font-size: .74rem; letter-spacing: .16em; text-transform: uppercase; color: var(--accent); margin-bottom: 26px; }

  /* ---------- instagram grid ---------- */
  .ig-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 20px; margin-bottom: 36px; flex-wrap: wrap; }
  .ig-head p { margin: 8px 0 0; color: var(--ink-soft); max-width: 34em; }
  .topic-grid { display: flex; gap: 14px; overflow-x: auto; scroll-snap-type: x mandatory; margin: 0 -28px; padding: 0 28px 10px; scrollbar-width: thin; }
  .topic-grid::-webkit-scrollbar { height: 6px; }
  .topic-grid::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 3px; }
  .topic-card { background: var(--paper-raised); border: 1px solid var(--line); display: flex; flex-direction: column; flex: 0 0 238px; scroll-snap-align: start; }
  .topic-card .tc-media { position: relative; }
  .topic-card .tc-img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; display: block; filter: saturate(1.02); }
  .topic-card .tc-play { position: absolute; right: 10px; bottom: 10px; width: 28px; height: 28px; border-radius: 50%; background: rgba(15,15,15,.55); backdrop-filter: blur(2px); display: flex; align-items: center; justify-content: center; }
  .topic-card .tc-play svg { width: 10px; height: 10px; fill: #fff; margin-left: 2px; }
  .topic-card .tc-body { padding: 16px 16px 20px; flex: 1; display: flex; flex-direction: column; }
  .topic-card .mark { font-family: "Space Grotesk", sans-serif; font-size: .68rem; color: var(--accent); letter-spacing: .06em; }
  .topic-card h3 { font-family: "Zen Kaku Gothic New", sans-serif; font-weight: 700; font-size: .92rem; margin-top: 12px; line-height: 1.6; }
  .topic-card p { margin: 8px 0 0; font-size: .8rem; color: var(--ink-soft); }
  .ig-scroll-hint { font-size: .74rem; color: var(--ink-faint); letter-spacing: .03em; margin-top: 12px; }
  @media (min-width: 900px) { .topic-grid { margin: 0; padding: 0 0 10px; } }

  .ig-cta { margin-top: 30px; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
  .ig-follow { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; padding: 14px 22px; border: 1px solid var(--ink); font-weight: 700; font-size: .92rem; }
  .ig-follow:hover { background: var(--ink); color: var(--paper); }
  .ig-meta { font-size: .84rem; color: var(--ink-faint); }

  /* ---------- sponsor banner ---------- */
  .sponsor-banner { background: var(--ink); color: var(--paper); padding: 48px 44px; border-radius: 2px; position: relative; overflow: hidden; }
  .sponsor-banner-top { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
  .sponsor-eyebrow { font-family: "Space Grotesk", sans-serif; font-size: .66rem; letter-spacing: .2em; text-transform: uppercase; color: var(--accent); }
  .sponsor-logo { height: 38px; width: auto; display: block; }
  .sponsor-banner .sponsor-text { margin-top: 28px; max-width: 38em; color: color-mix(in srgb, var(--paper) 74%, transparent); }
  .sponsor-banner-foot { margin-top: 34px; display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; padding-top: 26px; border-top: 1px solid color-mix(in srgb, var(--paper) 20%, transparent); }
  .sponsor-banner .sponsor-est { display: flex; flex-direction: column; }
  .sponsor-banner .sponsor-est .num { color: var(--paper); font-size: 1.3rem; font-weight: 600; }
  .sponsor-banner .sponsor-est .label { color: color-mix(in srgb, var(--paper) 55%, transparent); font-size: .68rem; letter-spacing: .03em; margin-top: 2px; }
  .sponsor-banner .sponsor-link { color: var(--accent); border-bottom: 1px solid var(--accent); font-weight: 700; font-size: .86rem; text-decoration: none; padding-bottom: 2px; white-space: nowrap; }
  .sponsor-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 40px; align-items: stretch; }
  .sponsor-body { display: flex; flex-direction: column; }
  .sponsor-photo { position: relative; border-radius: 2px; overflow: hidden; min-height: 220px; background: #0a0a0a; }
  .sponsor-photo img { width: 100%; height: 100%; object-fit: cover; display: block; filter: saturate(1.05); }
  .sponsor-photo .sponsor-photo-tag { position: absolute; left: 14px; bottom: 12px; font-family: "Space Grotesk", sans-serif; font-size: .62rem; letter-spacing: .18em; text-transform: uppercase; color: var(--paper); background: color-mix(in srgb, var(--ink) 55%, transparent); padding: 5px 10px; border: 1px solid color-mix(in srgb, var(--paper) 35%, transparent); }
  @media (max-width: 780px) { .sponsor-grid { grid-template-columns: 1fr; } .sponsor-photo { min-height: 200px; order: -1; } }
  @media (max-width: 640px) { .sponsor-banner { padding: 34px 26px; } .sponsor-banner-top { flex-direction: column; align-items: flex-start; gap: 18px; } .sponsor-logo { height: 30px; } }

  /* ---------- contact ---------- */
  .contact-box { background: var(--ink); color: var(--paper); padding: 60px 48px; border-radius: 2px; position: relative; overflow: hidden; }
  .contact-box h2 { color: var(--paper); font-size: clamp(1.6rem, 3.4vw, 2.2rem); }
  .contact-box p { color: color-mix(in srgb, var(--paper) 72%, transparent); max-width: 32em; margin-top: 16px; }
  .contact-actions { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }
  .contact-actions .btn-accent { }
  .contact-actions .btn-ghost { border: 1px solid color-mix(in srgb, var(--paper) 35%, transparent); color: var(--paper); background: transparent; }
  @media (max-width: 600px) { .contact-box { padding: 40px 26px; } }

  /* ---------- footer ---------- */
  footer { padding: 40px 0 60px; }
  .foot-row { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; font-size: .82rem; color: var(--ink-faint); }
  .foot-links { display: flex; gap: 20px; }
  .foot-links a { text-decoration: none; color: var(--ink-soft); }
  .foot-links a:hover { color: var(--accent); }

  @media (prefers-reduced-motion: no-preference) {
    .fade-up { animation: fadeUp .7s ease both; }
    @keyframes fadeUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
  }
  .skip-link { position: fixed; left: 12px; top: 12px; z-index: 100; transform: translateY(-160%); background: var(--ink); color: var(--paper); padding: 10px 14px; text-decoration: none; }
  .skip-link:focus { transform: translateY(0); }
  :focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }