/* ============================================================
   固裕堂（杭州）健康科技有限公司 · 海王金凤凰 品牌官网
   设计语言：宣纸底 · 宫墙红 · 鎏金 · 东方美学
   ============================================================ */

:root {
  /* Nudge: appearance */
  --site-bg: #f4ecdf;
  --site-fg: #2b1b18;
  --site-accent: #8c1f2e;
  --site-on-accent: #f4ecdf;
  --site-surface: #fffcf5;
  --site-muted: #6f5a51;
  --site-border: rgba(140, 31, 46, 0.16);
  --site-font: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", Georgia, serif;

  /* Nudge: radius / spacing / typography / motion */
  --site-radius: 10px;
  --site-space: 1;
  --site-type: 1;
  --site-motion: 1;

  /* 品牌固定装饰色，不随主题切换 */
  --gold: #c9a24b;
  --gold-soft: #e3c88a;
  --gold-deep: #9c7526;
  --ink: #1c1210;
  --font-ui: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, sans-serif;

  --space-1: calc(8px * var(--site-space));
  --space-2: calc(16px * var(--site-space));
  --space-3: calc(24px * var(--site-space));
  --space-4: calc(40px * var(--site-space));
  --space-5: calc(64px * var(--site-space));
  --space-6: calc(104px * var(--site-space));

  --dur-fast: calc(160ms * var(--site-motion));
  --dur-base: calc(320ms * var(--site-motion));
  --dur-slow: calc(720ms * var(--site-motion));
  --shadow-card: 0 2px 10px rgba(28, 18, 16, 0.06), 0 18px 40px -24px rgba(140, 31, 46, 0.35);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background-color: var(--site-bg);
  color: var(--site-fg);
  font-family: var(--site-font);
  font-size: 17px;
  line-height: 1.85;
  letter-spacing: 0.01em;
  background-image:
    radial-gradient(circle at 12% 8%, rgba(201, 162, 75, 0.07), transparent 42%),
    radial-gradient(circle at 88% 92%, rgba(140, 31, 46, 0.05), transparent 46%);
  background-attachment: fixed;
}

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

a { color: var(--site-accent); text-decoration: none; transition: color var(--dur-fast) ease, opacity var(--dur-fast) ease; }
a:hover { color: var(--gold-deep); }

:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: 2px; }

h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.3;
  margin: 0 0 var(--space-2);
  letter-spacing: 0.04em;
}

h1 { font-size: calc(52px * var(--site-type)); }
h2 { font-size: calc(38px * var(--site-type)); }
h3 { font-size: calc(23px * var(--site-type)); }

p { margin: 0 0 var(--space-2); }

.wrap { width: min(1200px, 100% - 48px); margin-inline: auto; }
.wrap-narrow { width: min(880px, 100% - 48px); margin-inline: auto; }

.en {
  font-family: var(--font-ui);
  letter-spacing: 0.32em;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--gold-deep);
}

/* ---------------- 顶栏 ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--ink) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(201, 162, 75, 0.28);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) 0;
}

.brand-mark { display: flex; align-items: center; gap: var(--space-2); flex: 0 0 auto; }
.brand-mark img { width: 158px; }
.brand-mark .divider { width: 1px; height: 34px; background: rgba(201, 162, 75, 0.4); }
.brand-mark .sub { font-family: var(--font-ui); font-size: 12px; letter-spacing: 0.2em; color: var(--gold-soft); line-height: 1.5; }

.nav { margin-left: auto; display: flex; gap: var(--space-1); }
.nav a {
  font-family: var(--font-ui);
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--site-on-accent);
  padding: 9px 16px;
  border-radius: 999px;
  transition: background var(--dur-fast) ease, color var(--dur-fast) ease;
}
.nav a:hover { background: rgba(201, 162, 75, 0.16); color: var(--gold-soft); }
.nav a[aria-current="page"] { background: var(--site-accent); color: var(--site-on-accent); }

.nav-toggle {
  display: none;
  margin-left: auto;
  background: none;
  border: 1px solid rgba(201, 162, 75, 0.45);
  color: var(--gold-soft);
  font-family: var(--font-ui);
  font-size: 14px;
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
}

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-ui);
  font-size: 15px;
  letter-spacing: 0.1em;
  padding: 13px 30px;
  border-radius: var(--site-radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--dur-fast) ease, box-shadow var(--dur-fast) ease, background var(--dur-fast) ease, color var(--dur-fast) ease;
}
.btn-primary { background: var(--site-accent); color: var(--site-on-accent); box-shadow: 0 10px 24px -12px rgba(140, 31, 46, 0.8); }
.btn-primary:hover { background: var(--ink); color: var(--gold-soft); transform: translateY(-2px); }
.btn-ghost { border-color: rgba(201, 162, 75, 0.6); color: var(--gold-soft); background: rgba(201, 162, 75, 0.06); }
.btn-ghost:hover { background: rgba(201, 162, 75, 0.18); color: #fff; transform: translateY(-2px); }
.btn-outline { border-color: var(--site-border); color: var(--site-accent); background: var(--site-surface); }
.btn-outline:hover { border-color: var(--gold); color: var(--gold-deep); }

/* ---------------- 首页英雄区 ---------------- */
.hero {
  position: relative;
  min-height: min(88vh, 780px);
  display: flex;
  align-items: center;
  background: var(--ink);
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(28, 18, 16, 0.82) 0%, rgba(28, 18, 16, 0.42) 42%, rgba(28, 18, 16, 0.05) 68%);
}
.hero-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 72% 50%; }
.hero-content { position: relative; z-index: 2; color: var(--site-on-accent); padding: var(--space-6) 0; }
.hero-content .eyebrow {
  font-family: var(--font-ui);
  letter-spacing: 0.42em;
  font-size: 13px;
  color: var(--gold-soft);
  margin-bottom: var(--space-3);
}
.hero-content h1 { color: #fff; margin-bottom: var(--space-2); text-shadow: 0 4px 30px rgba(0, 0, 0, 0.5); }
.hero-content h1 .thin { font-weight: 400; color: var(--gold-soft); }
.hero-slogan {
  font-size: calc(21px * var(--site-type));
  letter-spacing: 0.22em;
  color: var(--gold-soft);
  margin-bottom: var(--space-3);
}
.hero-lede { max-width: 52ch; color: rgba(244, 236, 223, 0.86); font-size: 17px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-4); }

/* ---------------- 数据条 ---------------- */
.stats {
  background: var(--site-accent);
  color: var(--site-on-accent);
  border-block: 1px solid rgba(201, 162, 75, 0.35);
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-3); padding: var(--space-4) 0; }
.stat { text-align: center; border-left: 1px solid rgba(244, 236, 223, 0.22); }
.stat:first-child { border-left: 0; }
.stat b { display: block; font-size: calc(34px * var(--site-type)); font-weight: 600; color: var(--gold-soft); letter-spacing: 0.02em; }
.stat span { font-family: var(--font-ui); font-size: 14px; letter-spacing: 0.1em; opacity: 0.9; }

/* ---------------- 通用区块 ---------------- */
.section { padding: var(--space-6) 0; }
.section-alt { background: var(--site-surface); border-block: 1px solid var(--site-border); }
.section-dark { background: var(--ink); color: var(--site-on-accent); }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-dark .lede { color: rgba(244, 236, 223, 0.8); }

.section-head { max-width: 720px; margin-bottom: var(--space-5); }
.section-head .en { display: block; margin-bottom: var(--space-1); }
.section-head h2 { color: var(--site-accent); }
.section-dark .section-head h2 { color: var(--gold-soft); }
.lede { color: var(--site-muted); font-size: 17px; }
.section-dark .lede { color: rgba(244, 236, 223, 0.78); }

.rule { display: flex; align-items: center; gap: var(--space-2); margin-bottom: var(--space-3); color: var(--gold); }
.rule::after { content: ""; height: 1px; flex: 1; background: linear-gradient(90deg, var(--gold), transparent); }
.rule span { font-family: var(--font-ui); font-size: 13px; letter-spacing: 0.28em; }

/* ---------------- 卡片网格 ---------------- */
.grid { display: grid; gap: var(--space-3); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--site-surface);
  border: 1px solid var(--site-border);
  border-radius: var(--site-radius);
  padding: var(--space-4);
  box-shadow: var(--shadow-card);
  transition: transform var(--dur-base) cubic-bezier(0.22, 0.61, 0.36, 1), box-shadow var(--dur-base) ease, border-color var(--dur-base) ease;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid rgba(201, 162, 75, 0.22);
  border-radius: calc(var(--site-radius) - 4px);
  pointer-events: none;
}
.card:hover { transform: translateY(-6px); border-color: rgba(201, 162, 75, 0.55); box-shadow: 0 26px 50px -30px rgba(140, 31, 46, 0.55); }
.card h3 { color: var(--site-accent); }
.card .icon { font-size: 26px; margin-bottom: var(--space-2); color: var(--gold-deep); }
.card p:last-child { margin-bottom: 0; }

.num-badge {
  font-family: var(--font-ui);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--gold-deep);
  border: 1px solid rgba(201, 162, 75, 0.5);
  border-radius: 999px;
  padding: 3px 12px;
  display: inline-block;
  margin-bottom: var(--space-2);
}

/* ---------------- 产品卡 ---------------- */
.product-card {
  display: flex;
  flex-direction: column;
  background: var(--site-surface);
  border: 1px solid var(--site-border);
  border-radius: var(--site-radius);
  overflow: hidden;
  transition: transform var(--dur-base) cubic-bezier(0.22, 0.61, 0.36, 1), box-shadow var(--dur-base) ease;
}
.product-card:hover { transform: translateY(-6px); box-shadow: 0 30px 54px -32px rgba(140, 31, 46, 0.5); }
.product-media {
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 50% 40%, #fffaf0, #efe3cf);
  display: grid;
  place-items: center;
  border-bottom: 1px solid var(--site-border);
}
.product-media img { width: 88%; height: 88%; object-fit: contain; transition: transform var(--dur-slow) ease; }
.product-card:hover .product-media img { transform: scale(1.05); }
.product-body { padding: var(--space-3); display: flex; flex-direction: column; gap: 10px; flex: 1; }
.product-body h3 { margin: 0; font-size: calc(20px * var(--site-type)); }
.tag-row { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--site-muted);
  background: rgba(201, 162, 75, 0.14);
  border: 1px solid rgba(201, 162, 75, 0.28);
  border-radius: 4px;
  padding: 2px 9px;
}
.meta { font-family: var(--font-ui); font-size: 13.5px; color: var(--site-muted); line-height: 1.7; }
.price { font-family: var(--font-ui); color: var(--site-accent); font-size: 15px; letter-spacing: 0.04em; margin-top: auto; }
.price em { font-style: normal; font-size: 19px; font-weight: 600; }

/* 分类筛选 */
.filters { display: flex; flex-wrap: wrap; gap: var(--space-1); margin-bottom: var(--space-4); }
.filter-btn {
  font-family: var(--font-ui);
  font-size: 14px;
  letter-spacing: 0.1em;
  padding: 9px 22px;
  border-radius: 999px;
  border: 1px solid var(--site-border);
  background: var(--site-surface);
  color: var(--site-muted);
  cursor: pointer;
  transition: all var(--dur-fast) ease;
}
.filter-btn:hover { border-color: var(--gold); color: var(--gold-deep); }
.filter-btn[aria-pressed="true"] { background: var(--site-accent); border-color: var(--site-accent); color: var(--site-on-accent); }
.is-hidden { display: none !important; }

/* ---------------- 图文两栏 ---------------- */
.split { display: grid; grid-template-columns: 1.05fr 1fr; gap: var(--space-5); align-items: center; }
.split-media { position: relative; }
.split-media img { border-radius: var(--site-radius); box-shadow: 0 34px 60px -34px rgba(28, 18, 16, 0.6); }
.split-media::after {
  content: "";
  position: absolute;
  inset: -14px -14px 14px 14px;
  border: 1px solid rgba(201, 162, 75, 0.45);
  border-radius: calc(var(--site-radius) + 4px);
  z-index: -1;
}

/* ---------------- 列表样式 ---------------- */
.check-list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-2); }
.check-list li { position: relative; padding-left: 30px; }
.check-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.72em;
  width: 9px;
  height: 9px;
  border: 1px solid var(--gold-deep);
  transform: rotate(45deg);
  background: rgba(201, 162, 75, 0.25);
}

/* ---------------- 时间线 ---------------- */
.timeline { list-style: none; margin: 0; padding: 0; position: relative; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 8px; bottom: 8px; width: 1px; background: linear-gradient(180deg, var(--gold), transparent); }
.timeline li { position: relative; padding: 0 0 var(--space-4) 34px; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--site-bg);
  border: 2px solid var(--site-accent);
}
.timeline time { font-family: var(--font-ui); font-size: 14px; letter-spacing: 0.14em; color: var(--gold-deep); display: block; margin-bottom: 4px; }
.timeline strong { color: var(--site-accent); font-weight: 600; }

/* ---------------- 资质 ---------------- */
.cert-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }
.cert {
  background: var(--site-surface);
  border: 1px solid var(--site-border);
  border-left: 3px solid var(--gold);
  border-radius: var(--site-radius);
  padding: var(--space-3);
}
.cert h4 { margin: 0 0 6px; font-size: calc(18px * var(--site-type)); color: var(--site-accent); }
.cert p { font-family: var(--font-ui); font-size: 14px; color: var(--site-muted); margin: 0; line-height: 1.7; }

/* ---------------- 信息表 ---------------- */
.info-table { width: 100%; border-collapse: collapse; font-family: var(--font-ui); font-size: 15px; }
.info-table th, .info-table td { text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--site-border); vertical-align: top; }
.info-table th { width: 168px; color: var(--site-muted); font-weight: 500; letter-spacing: 0.06em; background: rgba(201, 162, 75, 0.07); }
.info-table td { color: var(--site-fg); }

/* ---------------- 联系方式 ---------------- */
.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-3); }
.contact-card {
  background: var(--site-surface);
  border: 1px solid var(--site-border);
  border-radius: var(--site-radius);
  padding: var(--space-4);
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}
.contact-card .glyph {
  flex: 0 0 auto;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(140, 31, 46, 0.08);
  border: 1px solid rgba(201, 162, 75, 0.4);
  color: var(--site-accent);
}
.contact-card h3 { margin: 0 0 4px; font-size: calc(19px * var(--site-type)); }
.contact-card p { margin: 0; font-family: var(--font-ui); font-size: 15px; color: var(--site-muted); line-height: 1.8; }
.contact-card a { font-family: var(--font-ui); }

/* ---------------- 内页横幅 ---------------- */
.page-hero {
  background: var(--site-accent);
  color: var(--site-on-accent);
  padding: var(--space-6) 0 var(--space-5);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  right: -60px;
  top: -80px;
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, rgba(201, 162, 75, 0.32), transparent 66%);
}
.page-hero .cloud { position: absolute; right: 0; bottom: -10px; width: 480px; opacity: 0.22; }
.page-hero h1 { color: #fff; margin-bottom: var(--space-1); position: relative; }
.page-hero p { position: relative; max-width: 60ch; color: rgba(244, 236, 223, 0.86); margin: 0; }

/* ---------------- 提示条 ---------------- */
.notice {
  border: 1px solid rgba(201, 162, 75, 0.5);
  border-left: 3px solid var(--gold);
  background: rgba(201, 162, 75, 0.09);
  border-radius: var(--site-radius);
  padding: var(--space-3);
  font-family: var(--font-ui);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--site-muted);
}
.section-dark .notice { color: rgba(244, 236, 223, 0.8); background: rgba(201, 162, 75, 0.1); }

/* ---------------- 页脚 ---------------- */
.site-footer { background: var(--ink); color: rgba(244, 236, 223, 0.76); padding: var(--space-5) 0 var(--space-3); margin-top: auto; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: var(--space-4); padding-bottom: var(--space-4); border-bottom: 1px solid rgba(201, 162, 75, 0.2); }
.site-footer img.logo { width: 190px; margin-bottom: var(--space-2); }
.site-footer h4 { color: var(--gold-soft); font-family: var(--font-ui); font-size: 14px; letter-spacing: 0.2em; margin-bottom: var(--space-2); }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.site-footer a { color: rgba(244, 236, 223, 0.76); font-family: var(--font-ui); font-size: 14.5px; }
.site-footer a:hover { color: var(--gold-soft); }
.site-footer p { font-family: var(--font-ui); font-size: 14px; line-height: 1.9; margin: 0; }
.footer-bottom { display: flex; flex-wrap: wrap; gap: var(--space-2); justify-content: space-between; padding-top: var(--space-3); font-family: var(--font-ui); font-size: 13px; color: rgba(244, 236, 223, 0.5); letter-spacing: 0.05em; }

/* ---------------- 滚动动效 ---------------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity var(--dur-slow) ease, transform var(--dur-slow) cubic-bezier(0.22, 0.61, 0.36, 1); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: calc(90ms * var(--site-motion)); }
.reveal[data-delay="2"] { transition-delay: calc(180ms * var(--site-motion)); }
.reveal[data-delay="3"] { transition-delay: calc(270ms * var(--site-motion)); }
.reveal[data-delay="4"] { transition-delay: calc(360ms * var(--site-motion)); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 1040px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: var(--space-4); }
  h1 { font-size: calc(40px * var(--site-type)); }
}

@media (max-width: 760px) {
  body { font-size: 16px; }
  .wrap, .wrap-narrow { width: min(100% - 32px, 1200px); }
  .nav-toggle { display: block; }
  .nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    margin: 0;
    flex-direction: column;
    gap: 0;
    background: var(--ink);
    border-bottom: 1px solid rgba(201, 162, 75, 0.3);
    padding: var(--space-1) 16px var(--space-3);
    display: none;
  }
  .nav.open { display: flex; }
  .nav a { border-radius: var(--site-radius); padding: 13px 16px; }
  .brand-mark img { width: 128px; }
  .brand-mark .divider, .brand-mark .sub { display: none; }
  .hero { min-height: 78vh; }
  .hero::after { background: linear-gradient(180deg, rgba(28, 18, 16, 0.55), rgba(28, 18, 16, 0.88)); }
  .hero-bg { object-position: 78% 40%; }
  .hero-content { padding: var(--space-5) 0; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-3) var(--space-2); }
  .stat { border-left: 0; }
  .grid-3, .grid-2, .grid-4, .contact-grid, .cert-grid { grid-template-columns: 1fr; }
  .section { padding: var(--space-5) 0; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-4); }
  .info-table th { width: 108px; }
  .info-table th, .info-table td { padding: 11px 10px; font-size: 14px; }
  .page-hero { padding: var(--space-5) 0 var(--space-4); }
  .page-hero .cloud { width: 260px; opacity: 0.16; }
}