:root{
    --lacquer:#10181D;
    --lacquer-2:#1B252C;
    --lacquer-3:#232F37;
    --vermillion:#AE3B25;
    --vermillion-soft:#C24E37;
    --gold:#CBA052;
    --gold-soft:#DDBD7C;
    --turquoise:#3B9C93;
    --deigo:#E0552E;
    --washi:#F3E9D2;
    --washi-dim:#D9CFB5;
    --ink:#201A14;
    --font-display:'Shippori Mincho', serif;
    --font-body:'Zen Kaku Gothic New', sans-serif;
    --measure:700px;
  }

  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:radial-gradient(ellipse 1200px 600px at 50% -10%, #1c2933 0%, var(--lacquer) 55%);
    color:var(--washi-dim);
    font-family:var(--font-body);
    font-weight:300;
    line-height:1.75;
    font-size:clamp(16px,1.05vw + 0.6rem,18px);
    -webkit-font-smoothing:antialiased;
  }
  img,svg{display:block;max-width:100%;}
  h1,h2,h3{font-family:var(--font-display);color:var(--washi);font-weight:700;margin:0;}
  p{margin:0 0 1.1em 0;}
  a{color:var(--gold-soft);}
  .container{max-width:var(--measure);margin:0 auto;padding:0 28px;}
  [lang="ja"]{letter-spacing:0.08em;}

  /* ---------- Hero ---------- */
  .hero{position:relative;padding:96px 0 0;overflow:hidden;text-align:center;}
  .hero-eyebrow{
    display:inline-block;font-family:var(--font-display);color:var(--gold);
    font-size:clamp(22px,4vw,34px);letter-spacing:0.35em;margin-bottom:22px;
    padding-left:0.35em; /* optical centering for tracked text */
  }
  .hero h1{
    font-size:clamp(34px,6vw,58px);line-height:1.18;max-width:14ch;margin:0 auto 22px;
  }
  .hero-sub{
    max-width:520px;margin:0 auto;color:var(--washi-dim);font-size:clamp(15px,1.6vw,17px);
    font-weight:300;
  }
  .hero-art{width:100%;height:auto;margin-top:56px;}
  .hero-wrap{max-width:900px;margin:0 auto;padding:0 24px;}

  /* ---------- Intro ---------- */
  .intro{padding:64px 0 8px;}
  .intro p{font-size:clamp(17px,2vw,20px);color:var(--washi-dim);}
  .intro p::first-letter{
    font-family:var(--font-display);font-size:2.6em;color:var(--gold);
    float:left;line-height:0.8;padding:0.06em 0.08em 0 0;
  }

  /* ---------- Section titles (shared) ---------- */
  .kicker{
    display:block;font-size:12px;letter-spacing:0.22em;text-transform:uppercase;
    color:var(--turquoise);margin-bottom:10px;font-weight:500;
  }

  /* ---------- Timeline / eras ---------- */
  .timeline{padding:56px 0;}
  .era{
    display:grid;grid-template-columns:64px 1fr;column-gap:26px;
    position:relative;padding-bottom:64px;
  }
  .era:last-child{padding-bottom:0;}
  .era:not(:last-child)::after{
    content:"";position:absolute;left:31px;top:74px;bottom:6px;width:2px;
    background:linear-gradient(to bottom, var(--gold), var(--vermillion-soft));
    opacity:0.55;
  }
  .era-node{
    width:64px;height:64px;border-radius:50%;background:var(--lacquer-2);
    border:1.5px solid var(--gold);display:flex;align-items:center;justify-content:center;
    box-shadow:0 0 0 6px rgba(203,160,82,0.06);
  }
  .era-icon-svg{width:60%;height:60%;}
  .era-year{
    font-family:var(--font-display);color:var(--gold);font-size:14px;
    letter-spacing:0.14em;display:block;margin-bottom:6px;font-weight:600;
  }
  .era h2{font-size:clamp(21px,2.6vw,27px);margin-bottom:14px;line-height:1.3;}
  .era p{color:var(--washi-dim);font-size:16px;}

  /* ---------- Values ---------- */
  .values{padding:70px 0;}
  .values-head{text-align:center;max-width:520px;margin:0 auto 44px;}
  .values-head h2{font-size:clamp(24px,3vw,32px);margin-bottom:12px;}
  .values-head p{color:var(--washi-dim);font-size:15px;}
  .values-grid{
    display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:18px;
  }
  .value-card{
    background:var(--washi);color:var(--ink);border-radius:4px;
    padding:24px 22px 22px;border-top:3px solid var(--vermillion);
  }
  .value-term{
    font-family:var(--font-display);color:var(--vermillion);font-weight:700;
    font-size:18px;margin:0 0 3px;
  }
  .value-jp{font-size:13px;color:#6b5a3f;margin:0 0 12px;letter-spacing:0.04em;}
  .value-gloss{font-size:14px;line-height:1.6;margin:0;color:var(--ink);}
  .value-gloss strong{color:var(--vermillion);}

  /* ---------- Callout ---------- */
  .callout-inner{
    background:var(--lacquer-3);border:1px solid rgba(203,160,82,0.35);
    border-radius:4px;padding:26px 28px;
  }
  .callout-inner h3{font-size:18px;margin-bottom:10px;color:var(--gold-soft);}
  .callout-inner p{font-size:15px;color:var(--washi-dim);margin-bottom:0;}

  /* ---------- Video embed ---------- */
  .video-embed{
    position:relative;width:100%;padding-top:56.25%;
    border-radius:4px;overflow:hidden;margin:22px 0 10px;
    border:1px solid rgba(203,160,82,0.35);background:var(--lacquer-2);
  }
  .video-embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0;}
  .video-caption{font-size:13px;color:var(--washi-dim);opacity:0.85;margin:0 0 1.1em;}
  .video-caption a{color:var(--gold-soft);text-decoration-color:rgba(221,189,124,0.4);}

  /* ---------- Closing ---------- */
  .closing{padding:88px 0 40px;text-align:center;position:relative;}
  .closing-line{
    font-family:var(--font-display);color:var(--gold);
    font-size:clamp(24px,4vw,36px);line-height:1.4;max-width:12ch;margin:0 auto 26px;
  }
  .closing p{max-width:560px;margin:0 auto 1.2em;color:var(--washi-dim);font-size:16px;}
  .wave-divider{width:100%;height:40px;margin:8px 0 48px;opacity:0.5;}

  footer{padding:40px 0 64px;text-align:center;}
  footer p{font-size:13px;color:#8b8069;letter-spacing:0.02em;margin:0;}
  .ai-note{
    margin:18px auto 0;max-width:480px;padding-top:16px;
    border-top:1px solid rgba(203,160,82,0.22);font-size:12px;color:#8b8069;
  }

  /* ---------- Reveal animation ---------- */
  .js .reveal{opacity:0;transform:translateY(22px);transition:opacity .85s ease, transform .85s ease;}
  .js .reveal.is-visible{opacity:1;transform:translateY(0);}
  @media (prefers-reduced-motion: reduce){
    .js .reveal{opacity:1;transform:none;transition:none;}
  }

  @media (max-width:560px){
    .era{grid-template-columns:48px 1fr;column-gap:16px;}
    .era-node{width:48px;height:48px;}
    .era:not(:last-child)::after{left:23px;top:58px;}
    .hero{padding-top:64px;}
    .container{padding:0 20px;}
  }

  /* ---------- AI disclosure modal ---------- */
  dialog#ai-disclosure{
    max-width:440px;width:calc(100% - 48px);border:1px solid rgba(203,160,82,0.4);
    border-radius:6px;background:var(--lacquer-2);color:var(--washi-dim);
    padding:28px 26px 24px;font-family:var(--font-body);box-shadow:0 20px 60px rgba(0,0,0,0.5);
  }
  dialog#ai-disclosure::backdrop{background:rgba(8,12,15,0.75);}
  dialog#ai-disclosure h2{font-family:var(--font-display);font-size:19px;color:var(--washi);margin-bottom:12px;}
  dialog#ai-disclosure p{font-size:14px;line-height:1.65;margin-bottom:20px;color:var(--washi-dim);}
  dialog#ai-disclosure button{
    background:var(--vermillion);color:var(--washi);border:none;border-radius:4px;
    padding:10px 22px;font-family:var(--font-body);font-size:14px;cursor:pointer;
  }
  dialog#ai-disclosure button:hover{background:var(--vermillion-soft);}
  dialog#ai-disclosure.fallback-open{
    display:block;position:fixed;inset:0;margin:auto;height:fit-content;z-index:9999;
  }

  /* ---------- Sources ---------- */
  .sources{padding:56px 0 16px;}
  .sources-title{font-size:clamp(20px,2.6vw,26px);margin-bottom:18px;}
  .sources-list{list-style:decimal;padding-left:22px;margin:0;color:var(--washi-dim);font-size:14px;line-height:1.85;}
  .sources-list li{margin-bottom:10px;}
  .sources-list a{color:var(--gold-soft);word-break:break-word;}

/* ---------- Homepage ---------- */
.building-note{
  text-align:center;max-width:420px;margin:0 auto 48px;font-size:13px;color:var(--washi-dim);
  opacity:0.8;padding:14px 18px;border:1px dashed rgba(203,160,82,0.32);border-radius:4px;
}
.post-list{padding:8px 0 70px;}
.post-card{
  display:block;background:var(--lacquer-2);border:1px solid rgba(203,160,82,0.25);
  border-radius:6px;padding:30px 28px;text-decoration:none;
  transition:border-color .25s ease, transform .25s ease;
}
.post-card:hover{border-color:rgba(203,160,82,0.6);transform:translateY(-2px);}
.post-card-eyebrow{display:block;font-family:var(--font-display);color:var(--gold);font-size:13px;letter-spacing:0.12em;margin-bottom:10px;}
.post-card h2{font-size:clamp(22px,3vw,28px);margin-bottom:10px;line-height:1.3;}
.post-card p{color:var(--washi-dim);font-size:15px;margin-bottom:16px;}
.post-card .read-more{color:var(--gold-soft);font-size:14px;font-weight:500;}