/* ================================================================
   海和 Haiku — Shared design tokens, nav, footer
   Used by: index.html, wagyu.html, uni.html, seafood.html, about.html
   ================================================================ */

*, *::before, *::after { box-sizing: border-box; }

:root {
  --ink: #1a1a1a;
  --ink-70: #3d3d3d;
  --ink-60: #555;
  --ink-50: #757575;
  --ink-30: #b8b8b8;
  --line: #e5e5e5;
  --line-strong: #111;
  --paper: #ffffff;
  --cream: #faf7f2;
  --gray: #f5f5f5;
  --navy: #1b2a4e;
  --navy-hover: #0f1c38;
  --serif-zh: "Noto Serif TC", serif;
  --serif-en: "Cormorant Garamond", Georgia, serif;
  --sans: "Inter", -apple-system, "PingFang TC", "Microsoft JhengHei", sans-serif;
}

html, body { margin: 0; padding: 0; }
body {
  font-family: var(--sans);
  color: var(--ink); background: var(--paper);
  -webkit-font-smoothing: antialiased; line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ========== NAV ========== */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 20;
  background: rgba(255,255,255,.94);
  backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: 1440px; margin: 0 auto;
  padding: 16px 40px; display: flex; align-items: center; gap: 48px;
}
.mark { font-family: var(--serif-en); font-weight: 600; font-size: 20px; letter-spacing: .18em; }
.mark a { color: inherit; }
.mark .zh { font-family: var(--serif-zh); margin-left: 10px; font-size: 16px; letter-spacing: .3em; }
.menu { display: flex; gap: 32px; flex: 1; font-size: 14px; letter-spacing: .02em; }
.menu a { padding: 6px 0; color: var(--ink-70); transition: color .15s; }
.menu a:hover, .menu a.active { color: var(--ink); font-weight: 500; }
.nav-right { display: flex; align-items: center; gap: 16px; font-size: 13px; }
.lang { color: var(--ink-50); letter-spacing: .1em; }
.lang .on { color: var(--ink); font-weight: 500; }
.btn-primary {
  background: var(--navy); color: #fff; padding: 10px 20px; font-size: 13px;
  letter-spacing: .06em; font-weight: 500; transition: background .15s;
}
.btn-primary:hover { background: var(--navy-hover); }

/* ========== PAGE HEADER (sub-pages) ========== */
.page-head {
  padding: 160px 40px 64px 40px;
  max-width: 1440px; margin: 0 auto;
  border-bottom: 1px solid var(--line-strong);
}
.page-head .breadcrumb {
  font-family: var(--serif-en); font-style: italic; font-size: 13px; letter-spacing: .25em;
  text-transform: uppercase; color: var(--ink-50); margin-bottom: 24px;
}
.page-head .breadcrumb a { color: var(--ink-50); border-bottom: 1px solid transparent; }
.page-head .breadcrumb a:hover { border-bottom-color: var(--ink-50); }
.page-head h1 {
  font-family: var(--serif-zh); font-weight: 400;
  font-size: clamp(40px, 5vw, 64px); letter-spacing: .08em; line-height: 1.25; margin: 0 0 14px;
}
.page-head .en {
  font-family: var(--serif-en); font-style: italic; font-size: clamp(22px, 2vw, 30px);
  color: var(--ink-60); letter-spacing: .04em;
}

/* ========== SECTION ========== */
.sec { max-width: 1440px; margin: 0 auto; padding: 88px 40px; }
.sec-narrow { max-width: 1080px; }
.sec-title {
  display: flex; justify-content: space-between; align-items: end;
  margin-bottom: 40px; padding-bottom: 20px; border-bottom: 1px solid var(--line);
}
.sec-title .lbl {
  font-family: var(--serif-en); font-style: italic; font-size: 13px; letter-spacing: .3em;
  text-transform: uppercase; color: var(--ink-50); margin-bottom: 10px;
}
.sec-title h2 {
  font-family: var(--serif-zh); font-weight: 400;
  font-size: clamp(28px, 2.8vw, 40px); letter-spacing: .06em; margin: 0; line-height: 1.3;
}
.sec-title .en {
  font-family: var(--serif-en); font-style: italic; font-size: 15px; color: var(--ink-50);
  letter-spacing: .1em;
}

/* ========== BODY COPY ========== */
.prose {
  max-width: 780px;
}
.prose p {
  font-family: var(--serif-zh); font-size: 16px; line-height: 2; color: var(--ink-70); margin: 0 0 20px;
}
.prose p.lead {
  font-size: 22px; line-height: 1.8; color: var(--ink);
}

/* ========== SPEC TABLE ========== */
.spec-table {
  width: 100%; border-collapse: collapse; font-family: var(--serif-zh);
  margin-top: 20px;
}
.spec-table th, .spec-table td {
  padding: 18px 0; text-align: left; font-size: 15px; border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.spec-table th {
  font-weight: 400; color: var(--ink-50); font-family: var(--serif-en); font-style: italic;
  letter-spacing: .2em; text-transform: uppercase; font-size: 11px; width: 25%;
}
.spec-table td { color: var(--ink); line-height: 1.8; }

/* ========== IMAGE GALLERY ========== */
.gallery {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 40px;
}
.gallery > div {
  aspect-ratio: 4/5; background: var(--gray) center/cover no-repeat;
}

/* ========== CTA STRIP ========== */
.cta-strip {
  background: var(--ink); color: #fff; padding: 88px 40px; margin-top: 80px;
}
.cta-strip-inner {
  max-width: 1440px; margin: 0 auto;
  display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 48px; align-items: center;
}
.cta-strip h3 {
  font-family: var(--serif-zh); font-weight: 400; font-size: 28px; letter-spacing: .08em;
  line-height: 1.5; margin: 0;
}
.cta-strip .h-en {
  font-family: var(--serif-en); font-style: italic; font-size: 15px; color: var(--ink-30); margin-top: 10px;
}
.cta-item .k {
  font-family: var(--serif-en); font-style: italic; font-size: 12px; letter-spacing: .25em;
  text-transform: uppercase; color: var(--ink-30); margin-bottom: 10px;
}
.cta-item .v.lg {
  font-family: var(--sans); font-weight: 500; font-size: 20px;
  font-variant-numeric: tabular-nums; letter-spacing: .01em;
}
.cta-strip .btn-primary {
  background: #fff; color: var(--ink); padding: 14px 24px; font-weight: 500;
}
.cta-strip .btn-primary:hover { background: #e8e8eb; }

/* ========== FOOTER ========== */
footer.footer {
  background: var(--ink); color: var(--ink-30); padding: 32px 40px;
  font-size: 12px; font-family: var(--serif-en); font-style: italic; letter-spacing: .15em;
  border-top: 1px solid #2a2a2a;
}
footer.footer .row {
  max-width: 1440px; margin: 0 auto;
  display: flex; justify-content: space-between; text-transform: uppercase;
}

/* ========== UTILITY ========== */
.divider {
  max-width: 1440px; margin: 0 auto; padding: 0 40px;
}
.divider hr { border: none; border-top: 1px solid var(--line); margin: 0; }

/* ========== MOBILE ========== */
@media (max-width: 900px) {
  .nav-inner { flex-wrap: wrap; gap: 12px; padding: 14px 20px; }
  .mark { font-size: 17px; }
  .mark .zh { font-size: 14px; margin-left: 6px; letter-spacing: .2em; }
  .menu {
    order: 3; flex: 1 0 100%; gap: 10px 16px; font-size: 12px;
    flex-wrap: wrap; justify-content: center;
  }
  .menu a { white-space: nowrap; padding: 3px 0; }
  .nav-right { gap: 10px; }
  .btn-primary { padding: 8px 14px; font-size: 12px; }
  .page-head { padding: 120px 20px 48px; }
  .page-head h1 { font-size: clamp(32px, 8vw, 48px); }
  .sec { padding: 64px 20px; }
  .sec-title { flex-direction: column; align-items: flex-start; gap: 8px; }
  .gallery { grid-template-columns: 1fr; }
  .cta-strip { padding: 56px 20px; }
  .cta-strip-inner { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 480px) {
  .menu { font-size: 11px; gap: 8px 12px; }
  .mark { font-size: 15px; }
}