/* ============================================================
   Ink & Bloom — 水墨 × 现代排版
   色板：暖纸 #f6f1e7 / 墨 #1c1a17 / 赭石 #a8552e / 金 #c2a061
   ============================================================ */

:root {
  --paper: #f6f1e7;
  --paper-deep: #efe7d8;
  --ink: #1c1a17;
  --ink-soft: #4a4540;
  --ink-faint: #8a8178;
  --ochre: #a8552e;
  --gold: #c2a061;
  --line: #d8cfc0;
  --serif: "Cormorant Garamond", "Songti SC", "STSong", Georgia, "Times New Roman", serif;
  --sans: "Avenir Next", "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--ochre); text-decoration: none; transition: opacity .2s; }
a:hover { opacity: .72; }

/* ---------- 通用 ---------- */

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 28px; }
.wrap-narrow { max-width: 760px; margin: 0 auto; padding: 0 28px; }

.section { padding: 96px 0; }
.section-tight { padding: 64px 0; }

.kicker {
  font-size: 12px;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 18px;
}

h1, h2, h3 { font-family: var(--serif); font-weight: 500; line-height: 1.25; }

h1 { font-size: clamp(38px, 6vw, 64px); }
h2 { font-size: clamp(28px, 4vw, 42px); }
h3 { font-size: 22px; }

.lede {
  font-family: var(--serif);
  font-size: clamp(19px, 2.4vw, 24px);
  font-style: italic;
  color: var(--ink-soft);
  line-height: 1.6;
}

.ink-rule {
  border: none;
  border-top: 1px solid var(--line);
  margin: 56px auto;
  width: 64px;
}

.vertical-mark {
  writing-mode: vertical-rl;
  font-family: var(--serif);
  letter-spacing: .5em;
  color: var(--gold);
  font-size: 13px;
}

/* ---------- 顶栏 ---------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 40px;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: rgba(246, 241, 231, .92);
  backdrop-filter: blur(8px);
  z-index: 50;
}

.brand {
  font-family: var(--serif);
  font-size: 21px;
  letter-spacing: .06em;
  color: var(--ink);
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.brand .amp { color: var(--ochre); font-style: italic; }
.brand .zh { font-size: 13px; color: var(--ink-faint); letter-spacing: .4em; }

.nav { display: flex; gap: 34px; align-items: center; }
.nav a {
  color: var(--ink-soft);
  font-size: 13.5px;
  letter-spacing: .08em;
}
.nav a.active { color: var(--ink); border-bottom: 1px solid var(--ochre); padding-bottom: 2px; }

.nav-toggle { display: none; }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 78vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: 80px 24px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url("img/hero-plum-branch.png") center 30% / cover no-repeat;
  opacity: .16;
  filter: sepia(.18);
}

.hero-inner { position: relative; max-width: 720px; }

.hero h1 { margin: 18px 0 26px; }
.hero h1 .amp { color: var(--ochre); font-style: italic; }

.hero .lede { margin-bottom: 44px; }

.btn-row { display: flex; gap: 18px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 15px 42px;
  font-size: 13.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  border: 1px solid var(--ink);
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  transition: all .25s;
  font-family: var(--sans);
}
.btn:hover { background: var(--ink); color: var(--paper); opacity: 1; }

.btn-solid { background: var(--ink); color: var(--paper); }
.btn-solid:hover { background: var(--ochre); border-color: var(--ochre); }

.btn-ochre { border-color: var(--ochre); color: var(--ochre); }
.btn-ochre:hover { background: var(--ochre); color: var(--paper); }

/* ---------- 产品卡 ---------- */

.product-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  margin-top: 56px;
}

.product-card { text-align: center; }
.product-card figure {
  border: 1px solid var(--line);
  background: #fff;
  padding: 18px;
  margin-bottom: 26px;
  box-shadow: 0 12px 40px rgba(28, 26, 23, .07);
}
.product-card h3 { margin-bottom: 8px; }
.product-card .price {
  font-family: var(--serif);
  color: var(--ochre);
  font-size: 19px;
  margin: 10px 0 20px;
}
.product-card p { color: var(--ink-soft); font-size: 15px; margin-bottom: 24px; }

/* ---------- 三栏理念 ---------- */

.trio {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  margin-top: 48px;
}
.trio .item { border-top: 1px solid var(--ink); padding-top: 22px; }
.trio h3 { font-size: 19px; margin-bottom: 12px; }
.trio p { font-size: 14.5px; color: var(--ink-soft); }

/* ---------- 页脚 ---------- */

.footer {
  border-top: 1px solid var(--line);
  padding: 64px 40px 48px;
  background: var(--paper-deep);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  max-width: 1080px;
  margin: 0 auto;
}
.footer h4 {
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 16px;
  font-family: var(--sans);
  font-weight: 600;
}
.footer ul { list-style: none; }
.footer li { margin-bottom: 9px; font-size: 14px; }
.footer li a { color: var(--ink-soft); }
.footer .brand-line { margin-bottom: 14px; }
.footer .fine { font-size: 12.5px; color: var(--ink-faint); line-height: 1.8; }

.footer-bottom {
  max-width: 1080px;
  margin: 48px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--ink-faint);
}

/* ---------- 法务页 ---------- */

.legal-body h2 { margin: 48px 0 18px; font-size: 26px; }
.legal-body h3 { margin: 32px 0 12px; font-size: 18px; }
.legal-body p, .legal-body li { color: var(--ink-soft); font-size: 15px; margin-bottom: 14px; }
.legal-body ul, .legal-body ol { padding-left: 24px; margin-bottom: 18px; }
.legal-body .updated { color: var(--ink-faint); font-size: 13px; }

.legal-nav {
  display: flex;
  gap: 26px;
  flex-wrap: wrap;
  border: 1px solid var(--line);
  padding: 18px 24px;
  margin: 40px 0;
  font-size: 13.5px;
  background: #fff;
}
.legal-nav a { color: var(--ink-soft); }

/* ---------- 产品详情页 ---------- */

.product-hero { text-align: center; padding: 88px 24px 64px; position: relative; overflow: hidden; }
.product-hero .hero-bg { opacity: .12; background-position: center 20%; }

.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: 14.5px;
}
.spec-table th, .spec-table td {
  text-align: left;
  padding: 13px 16px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.spec-table th { color: var(--ink-faint); font-weight: 600; width: 200px; letter-spacing: .04em; }
.spec-table td { color: var(--ink-soft); }

.gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin: 40px 0; }
.gallery figure { border: 1px solid var(--line); background: #fff; padding: 12px; }
.gallery figcaption { text-align: center; font-size: 12.5px; color: var(--ink-faint); padding-top: 10px; letter-spacing: .06em; }

.checklist { list-style: none; padding-left: 0; }
.checklist li { padding-left: 30px; position: relative; margin-bottom: 12px; color: var(--ink-soft); }
.checklist li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 14px; height: 7px;
  border-left: 1.5px solid var(--ochre);
  border-bottom: 1.5px solid var(--ochre);
  transform: rotate(-45deg);
}

.buy-box {
  border: 1px solid var(--ink);
  padding: 40px;
  text-align: center;
  margin: 56px 0;
  background: #fff;
}
.buy-box .price { font-family: var(--serif); font-size: 40px; margin: 8px 0 4px; }
.buy-box .note { font-size: 13px; color: var(--ink-faint); margin-bottom: 26px; }

/* ---------- 响应式 ---------- */

@media (max-width: 860px) {
  .topbar { padding: 16px 22px; }
  .nav {
    display: none;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--paper);
    flex-direction: column;
    gap: 0;
    border-bottom: 1px solid var(--line);
    padding: 8px 0 16px;
  }
  .nav.open { display: flex; }
  .nav a { padding: 13px 24px; width: 100%; }
  .nav-toggle {
    display: block;
    background: none;
    border: none;
    font-size: 22px;
    color: var(--ink);
    cursor: pointer;
    font-family: var(--serif);
  }
  .product-grid, .trio, .gallery, .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
  .hero { min-height: 66vh; }
  .spec-table th { width: 120px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}