:root{
  --bg:#FFFFFF;
  --surface:#FFFFFF;
  --surface-2:#FFFBE6;
  --ink:#1A1A17;
  --ink-soft:#57564C;
  --ink-faint:#918F7E;
  --yellow:#EEE229;
  --yellow-deep:#C9BE12;
  --yellow-pale:#FBF7CF;
  --line:#ECE8D2;
  --radius:2px;
  --serif:'Zen Old Mincho', serif;
  --sans:'Zen Kaku Gothic New', sans-serif;
}
:root:not([data-theme="light"]){
  @media (prefers-color-scheme: dark){
    --bg:#17160F;
    --surface:#1E1D14;
    --surface-2:#242212;
    --ink:#F5F3E4;
    --ink-soft:#C7C4AC;
    --ink-faint:#7E7C68;
    --yellow-pale:#2A2914;
    --line:#33311E;
  }
}
:root[data-theme="dark"]{
  --bg:#17160F;--surface:#1E1D14;--surface-2:#242212;
  --ink:#F5F3E4;--ink-soft:#C7C4AC;--ink-faint:#7E7C68;
  --yellow-pale:#2A2914;--line:#33311E;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);
  line-height:1.85;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;}
.wrap{max-width:1080px;margin:0 auto;padding:0 28px;}
h1,h2,h3{font-family:var(--serif);font-weight:600;margin:0 0 .5em;letter-spacing:.02em;}

header{
  position:sticky;top:0;z-index:50;
  background:color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line);
}
.headbar{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 28px;max-width:1080px;margin:0 auto;gap:20px;
}
.brand{font-family:var(--serif);font-weight:900;font-size:20px;color:var(--ink);text-decoration:none;}
.nav-cta{
  font-size:13px;font-weight:700;color:var(--ink);
  background:var(--yellow);padding:11px 20px;border-radius:var(--radius);
  text-decoration:none;white-space:nowrap;transition:background .2s ease;
  border:1px solid var(--ink);
}
.nav-cta:hover{background:var(--yellow-deep);}

.breadcrumb{font-size:12.5px;color:var(--ink-faint);padding:18px 0 0;}
.breadcrumb a{text-decoration:none;color:var(--ink-soft);}
.breadcrumb a:hover{text-decoration:underline;}

/* ---------- Blog list ---------- */
.blog-hero{padding:40px 0 8px;}
.blog-hero p{color:var(--ink-soft);font-size:14.5px;max-width:56ch;}
.post-list{padding:28px 0 70px;display:grid;gap:22px;}
.post-card{
  display:block;text-decoration:none;color:inherit;
  border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 28px;background:var(--surface);transition:border-color .2s ease, background .2s ease;
}
.post-card:hover{border-color:var(--ink);background:var(--surface-2);}
.post-date{font-size:12px;color:var(--ink-faint);letter-spacing:.04em;}
.post-card h2{font-size:19px;margin-top:8px;color:var(--ink);}
.post-excerpt{margin-top:8px;font-size:14px;color:var(--ink-soft);}

/* ---------- Blog post ---------- */
.post{padding:28px 0 60px;max-width:720px;margin:0 auto;}
.post-header{padding-bottom:24px;border-bottom:1px solid var(--line);margin-bottom:32px;}
.post-header .post-date{display:block;margin-bottom:10px;}
.post-header h1{font-size:clamp(24px,3.6vw,34px);line-height:1.5;}
.post-body p{margin:0 0 1.4em;font-size:15.5px;color:var(--ink-soft);}
.post-body h2{font-size:19px;margin:1.6em 0 .6em;color:var(--ink);}
.post-body figure{margin:24px 0;}
.post-body figure img{width:100%;height:380px;object-fit:cover;border:1px solid var(--line);border-radius:var(--radius);display:block;}
.post-body figcaption{margin-top:8px;font-size:12.5px;color:var(--ink-faint);text-align:center;}
.photo-pair{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:24px 0;}
.photo-pair figure{margin:0;}
.photo-pair figure img{height:260px;}
@media (max-width: 600px){
  .post-body figure img{height:280px;}
  .photo-pair figure img{height:200px;}
}
.photo-pair .tag{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.05em;padding:3px 10px;border-radius:999px;margin-bottom:8px;}
.photo-pair .tag.before{background:var(--yellow-pale);color:var(--ink-soft);}
.photo-pair .tag.after{background:var(--yellow);color:var(--ink);}
@media (max-width: 600px){
  .photo-pair{grid-template-columns:1fr;}
}

.cta-band{background:var(--yellow-pale);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:44px 0;margin-top:20px;}
.cta-band h2{font-size:22px;}
.cta-band p{color:var(--ink-soft);font-size:14.5px;margin:12px 0 0;}
.cta-row{margin-top:24px;display:flex;gap:14px;flex-wrap:wrap;}
.btn-primary{
  display:inline-flex;align-items:center;gap:8px;background:var(--yellow);color:var(--ink);
  padding:16px 28px;border-radius:var(--radius);text-decoration:none;
  font-weight:700;font-size:14.5px;border:1px solid var(--ink);
  transition:background .2s ease;
}
.btn-primary:hover{background:var(--yellow-deep);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;padding:16px 24px;border:1px solid var(--line);
  border-radius:var(--radius);text-decoration:none;font-size:14.5px;color:var(--ink-soft);
}

footer{padding:32px 0;font-size:12px;color:var(--ink-faint);border-top:1px solid var(--line);}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;}