/* =========================================================
   皇蓟生物科技（深圳）有限公司 / 蓟皇 KING ARTICHOKE
   品牌官网样式表
   ========================================================= */

:root {
  --ink: #14201b;
  --ink-soft: #3d4a43;
  --muted: #6b7a72;
  --green-950: #072a20;
  --green-900: #0b3a2c;
  --green-800: #0f4a37;
  --green-700: #14553f;
  --green-500: #2e7d5b;
  --green-100: #e6efe9;
  --gold: #b08d3f;
  --gold-soft: #d8c08a;
  --cream: #faf7f0;
  --paper: #ffffff;
  --line: #e5e0d3;
  --radius: 4px;
  --max: 1140px;
  --serif: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", Georgia, serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; display: block; }

a { color: var(--green-700); text-decoration: none; transition: color .2s; }
a:hover { color: var(--gold); }

h1, h2, h3, h4 {
  font-family: var(--serif);
  color: var(--green-950);
  line-height: 1.35;
  font-weight: 600;
  margin: 0 0 .6em;
  letter-spacing: .01em;
}

h1 { font-size: clamp(2rem, 4.4vw, 3.25rem); }
h2 { font-size: clamp(1.55rem, 2.8vw, 2.15rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1.1em; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.section { padding: 88px 0; }
.section--tight { padding: 60px 0; }
.section--cream { background: var(--cream); }
.section--dark { background: var(--green-950); color: #cfdcd5; }
.section--dark h2, .section--dark h3 { color: #fff; }
.section--dark a { color: var(--gold-soft); }

.eyebrow {
  font-family: var(--sans);
  font-size: .74rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 600;
  margin: 0 0 14px;
}

.lead { font-size: 1.06rem; color: var(--ink-soft); max-width: 62ch; }
.section--dark .lead { color: #b8c9c1; }
.center { text-align: center; }
.center .lead { margin-left: auto; margin-right: auto; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  max-width: var(--max); margin: 0 auto; padding: 0 24px;
  height: 80px; display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.logo { display: flex; align-items: center; gap: 11px; }
.logo-mark { width: 40px; height: 40px; flex: none; }
.logo-slogan { font-size: .76rem; font-weight: 700; color: var(--green-700); letter-spacing: .14em; margin-top: 2px; }
.logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.logo-cn { font-family: var(--serif); font-size: 1.06rem; color: var(--green-950); font-weight: 600; letter-spacing: .06em; }
.logo-en { font-size: .6rem; letter-spacing: .2em; color: var(--gold); text-transform: uppercase; }

.nav { display: flex; align-items: center; gap: 28px; }
.nav a { font-size: .93rem; color: var(--ink-soft); position: relative; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--green-700); }
.nav a[aria-current="page"]::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -6px; height: 2px; background: var(--gold);
}
.nav-cta {
  font-size: .88rem; padding: 9px 20px; border: 1px solid var(--green-700);
  color: var(--green-700) !important; border-radius: 2px;
}
.nav-cta:hover { background: var(--green-700); color: #fff !important; }

.nav-toggle { display: none; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(circle at 78% 24%, rgba(176,141,63,.10), transparent 46%),
    linear-gradient(160deg, #ffffff 0%, #faf7f0 62%, #f2f5f0 100%);
  border-bottom: 1px solid var(--line);
}
.hero-grid {
  display: grid; grid-template-columns: 1.08fr .92fr; gap: 56px; align-items: center;
  padding: 92px 0 96px;
}
.hero h1 {
  font-family: var(--serif); font-weight: 700;
  font-size: clamp(2.6rem, 5.6vw, 4.3rem);
  line-height: 1.16; letter-spacing: .03em; margin-bottom: 24px;
}
.hero h1 .accent { color: var(--green-700); }
.hero h1 .gold { color: var(--gold); }
.hero-sub { font-size: 1.1rem; color: var(--ink-soft); max-width: 44ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 13px 28px; border-radius: 2px; font-size: .95rem; font-weight: 500;
  border: 1px solid transparent; transition: all .22s; cursor: pointer;
}
.btn-primary { background: var(--green-800); color: #fff; }
.btn-primary:hover { background: var(--green-700); color: #fff; transform: translateY(-1px); }
.btn-ghost { border-color: var(--line); color: var(--ink-soft); background: #fff; }
.btn-ghost:hover { border-color: var(--gold); color: var(--green-700); }

.hero-art { position: relative; display: flex; flex-direction: column; align-items: center; }
.hero-art svg { width: 100%; max-width: 420px; height: auto; }

/* ---------- Fact strip ---------- */
.fact-strip { border-bottom: 1px solid var(--line); background: #fff; }
.fact-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
}
.fact {
  padding: 30px 26px; border-left: 1px solid var(--line);
}
.fact:first-child { border-left: none; }
.fact-num { font-family: var(--serif); font-size: 1.75rem; color: var(--green-800); display: block; line-height: 1.2; }
.fact-label { font-size: .82rem; color: var(--muted); letter-spacing: .04em; }

/* ---------- Grids & cards ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px; }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px 28px; transition: border-color .25s, box-shadow .25s, transform .25s;
}
.card:hover { border-color: var(--gold-soft); box-shadow: 0 14px 34px -22px rgba(11,58,44,.4); transform: translateY(-2px); }
.card h3 { margin-bottom: 10px; font-size: 1.14rem; }
.card p { font-size: .94rem; color: var(--muted); margin: 0; }
.card-icon { width: 40px; height: 40px; margin-bottom: 18px; color: var(--green-700); }

/* ---------- Product list ---------- */
.product {
  display: grid; grid-template-columns: 200px 1fr; gap: 0;
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  background: #fff; margin-bottom: 22px;
}
.product-visual {
  background: linear-gradient(150deg, var(--green-900), var(--green-700));
  display: flex; align-items: center; justify-content: center; padding: 26px;
}
.product-visual svg { width: 92px; height: 92px; color: var(--gold-soft); }
.product-body { padding: 30px 32px; }
.product-body h3 { margin-bottom: 6px; }
.product-tag {
  display: inline-block; font-size: .72rem; letter-spacing: .12em; color: var(--gold);
  border: 1px solid var(--gold-soft); padding: 2px 9px; margin-bottom: 14px; border-radius: 2px;
}
.product-body ul { margin: 12px 0 0; padding-left: 18px; font-size: .93rem; color: var(--muted); }
.product-body li { margin-bottom: 5px; }

/* ---------- Prose ---------- */
.prose { max-width: 74ch; }
.prose h2 { margin-top: 1.9em; }
.prose h3 { margin-top: 1.6em; color: var(--green-800); }
.prose ul, .prose ol { padding-left: 20px; margin: 0 0 1.1em; }
.prose li { margin-bottom: .45em; }
.prose strong { color: var(--green-900); }
.prose blockquote {
  margin: 1.6em 0; padding: 18px 24px; border-left: 3px solid var(--gold);
  background: var(--cream); color: var(--ink-soft); font-size: .96rem;
}
.prose blockquote p:last-child { margin-bottom: 0; }

/* ---------- Timeline / flow ---------- */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: step; }
.flow-item { padding: 0 22px 0 0; position: relative; }
.flow-item::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  font-family: var(--serif); font-size: .85rem; color: var(--gold); letter-spacing: .1em;
  display: block; margin-bottom: 10px;
}
.flow-item h4 { font-size: 1rem; margin-bottom: 6px; color: var(--green-900); }
.flow-item p { font-size: .88rem; color: var(--muted); margin: 0; }

/* ---------- FAQ ---------- */
.faq { max-width: 860px; margin: 0 auto; }
.faq details {
  border-bottom: 1px solid var(--line); padding: 22px 0;
}
.faq summary {
  cursor: pointer; font-family: var(--serif); font-size: 1.05rem; color: var(--green-900);
  list-style: none; display: flex; justify-content: space-between; align-items: flex-start; gap: 20px;
  font-weight: 600;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; color: var(--gold); font-size: 1.3rem; line-height: 1; flex: none; font-family: var(--sans);
}
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 14px 0 0; font-size: .95rem; color: var(--ink-soft); }

/* ---------- Quote / callout ---------- */
.callout {
  border: 1px solid var(--gold-soft); background: #fffdf7; border-radius: var(--radius);
  padding: 26px 30px; font-size: .95rem; color: var(--ink-soft);
}
.callout strong { color: var(--green-900); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.info-list { list-style: none; padding: 0; margin: 0; }
.info-list li { padding: 16px 0; border-bottom: 1px solid rgba(255,255,255,.13); font-size: .95rem; }
.info-list .k { display: block; font-size: .74rem; letter-spacing: .16em; color: var(--gold-soft); text-transform: uppercase; margin-bottom: 4px; }
.section--dark .info-list li { color: #dfe8e3; }

/* ---------- Footer ---------- */
.site-footer { background: #051d16; color: #8fa49a; padding: 56px 0 34px; font-size: .86rem; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.site-footer h4 { color: #dbe6e0; font-family: var(--sans); font-size: .78rem; letter-spacing: .16em; text-transform: uppercase; margin-bottom: 14px; }
.site-footer a { color: #8fa49a; }
.site-footer a:hover { color: var(--gold-soft); }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 8px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1); padding-top: 24px;
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; color: #6f847a; font-size: .8rem;
}

/* ---------- Badges ---------- */
.badge-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.badge {
  font-size: .78rem; color: var(--green-700); background: var(--green-100);
  border-radius: 2px; padding: 5px 12px; letter-spacing: .02em;
}
.section--dark .badge { background: rgba(255,255,255,.08); color: var(--gold-soft); }

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  background: linear-gradient(160deg, #faf7f0, #f0f4ef);
  border-bottom: 1px solid var(--line); padding: 72px 0 60px;
}
.page-hero h1 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); }
.crumb { font-size: .8rem; color: var(--muted); margin-bottom: 16px; letter-spacing: .04em; }
.crumb a { color: var(--muted); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-grid, .grid-2, .contact-grid { grid-template-columns: 1fr; gap: 44px; }
  .grid-3 { grid-template-columns: 1fr; }
  .fact-grid { grid-template-columns: repeat(2, 1fr); }
  .fact:nth-child(3) { border-left: none; }
  .flow { grid-template-columns: repeat(2, 1fr); row-gap: 32px; }
  .product { grid-template-columns: 1fr; }
  .product-visual { padding: 22px; }
  .product-visual svg { width: 64px; height: 64px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .section { padding: 64px 0; }
  .hero-grid { padding: 60px 0 64px; }
  .nav { display: none; }
  .nav.open {
    display: flex; flex-direction: column; align-items: flex-start; gap: 0;
    position: absolute; top: 80px; left: 0; right: 0; background: #fff;
    border-bottom: 1px solid var(--line); padding: 12px 24px 24px;
  }
  .nav.open a { padding: 12px 0; width: 100%; border-bottom: 1px solid var(--line); }
  .nav.open .nav-cta { border: none; padding: 12px 0; }
  .nav-toggle {
    display: block; background: none; border: none; font-size: 1.5rem; color: var(--green-900);
    cursor: pointer; padding: 4px 8px; line-height: 1;
  }
}

/* ---- 真实照片素材 ---- */
.qr-photo {
  width: min(150px, 31vw); height: auto; display: block;
  border-radius: 20px; background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 26px 70px rgba(11,58,44,.16);
}
.hero-qr-cap {
  text-align: center; margin-top: 12px;
  font-size: .95rem; letter-spacing: .08em; color: var(--muted);
}
.origin-photo {
  width: 100%; max-height: 300px; object-fit: cover;
  border-radius: var(--radius); display: block; margin-bottom: 30px;
}
.product-photo {
  width: 100%; height: 100%; min-height: 200px;
  object-fit: cover; display: block;
}
.product-visual:has(.product-photo) { padding: 0; background: #fff; }
.prose-photo {
  display: block; width: min(420px, 100%);
  border-radius: var(--radius); margin: 26px auto;
}
.doc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 36px; }
.doc-card {
  display: block; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px 24px; background: #fff; transition: border-color .2s, transform .2s;
}
.doc-card:hover { border-color: var(--green-700); transform: translateY(-2px); }
.doc-tag {
  display: inline-block; font-size: .72rem; letter-spacing: .08em;
  color: var(--green-700); border: 1px solid currentColor;
  padding: 2px 8px; border-radius: 2px; margin-bottom: 10px;
}
.doc-card h3 { font-size: 1rem; margin-bottom: 6px; }
.doc-card p { font-size: .86rem; color: var(--muted); margin-bottom: 12px; }
.doc-link { font-size: .85rem; color: var(--green-700); font-weight: 600; }
@media (max-width: 720px) {
  .doc-grid { grid-template-columns: 1fr; }
  .origin-photo { max-height: 220px; }
}