/* ============================================================
   MayzonMart — 全站样式（奢华克制版）
   视觉方向：AI 智能玩偶 / 黑白熊猫 / 高端克制
   配色：近黑 #0a0a0b · 米白 #f7f6f2 · 暖金 #b99855（极少量点缀）
   版式：超大留白 / 细体大字 / 无卡片盒 / 细线分隔
   参考：Porsche · Rimowa · Apple 的克制排版语言
   ============================================================ */

/* ---------- 1. 设计 token 与基础 ---------- */
:root {
  --dark: #0a0a0b;
  --dark-2: #131316;
  --light: #f7f6f2;
  --light-2: #efede8;
  --ink: #17181a;
  --ink-soft: #6f6d66;
  --ink-faint: #a3a098;
  --line-light: #e5e2da;
  --line-dark: rgba(255, 255, 255, 0.12);
  --gold: #b99855;
  --gold-deep: #9a7b3c;
  --gold-soft: rgba(185, 152, 85, 0.13);
  /* 兼容旧变量名（app.js 内联样式仍在引用） */
  --orange-500: var(--gold);
  --orange-600: var(--gold-deep);
  --orange-soft: var(--gold-soft);
  --cyan-300: var(--gold);
  --cyan-400: var(--gold);
  --cyan-500: var(--gold);
  --cyan-600: var(--gold-deep);
  --navy-950: var(--dark);
  --navy-900: var(--dark);
  --navy-800: #1d1e22;
  --navy-700: #2a2b31;
  --navy-600: #3a3c44;
  --bg: var(--light-2);
  --bg-deep: #ece9e2;
  --white: #ffffff;
  --line: var(--line-light);
  --shadow-sm: 0 1px 2px rgba(23, 24, 26, 0.05), 0 2px 10px rgba(23, 24, 26, 0.04);
  --shadow-md: 0 6px 20px rgba(23, 24, 26, 0.08), 0 18px 40px rgba(23, 24, 26, 0.07);
  --shadow-lg: 0 14px 34px rgba(23, 24, 26, 0.10), 0 34px 70px rgba(23, 24, 26, 0.10);
  --shadow-orange: 0 8px 22px rgba(23, 24, 26, 0.12);
  --shadow-cyan: 0 8px 22px rgba(23, 24, 26, 0.10);
  --glow-orange: 0 0 0 rgba(0, 0, 0, 0);
  --radius-sm: 2px;
  --radius: 4px;
  --radius-lg: 8px;
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --maxw: 1200px;
  --header-h: 88px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--light);
  font-size: 15.5px;
  line-height: 1.9;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

h1, h2, h3, h4 { line-height: 1.3; font-weight: 300; letter-spacing: 0.02em; color: var(--ink); }
p { text-wrap: pretty; }

::selection { background: var(--gold); color: #fff; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 1000;
  background: var(--ink); color: #fff; padding: 10px 18px;
}
.skip-link:focus { left: 0; }

.view { animation: viewIn 0.5s ease; }
@keyframes viewIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

/* ---------- 2. 顶部导航（透明 → 滚动后米白） ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background 0.35s ease, border-color 0.35s ease;
}
.site-header.scrolled {
  background: rgba(247, 246, 242, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--line-light);
}
.header-inner { display: flex; align-items: center; gap: 40px; min-height: var(--header-h); }

.brand { display: inline-flex; align-items: center; gap: 14px; flex-shrink: 0; }
.brand-mark {
  display: inline-flex; align-items: center; justify-content: center;
  line-height: 0;
}
.brand-mark img { height: 38px; width: auto; display: block; }
/* 顶部导航透明态（深色 hero 上）：黑色 logo 反白 */
.site-header:not(.scrolled) .brand-mark img { filter: brightness(0) invert(1); }
/* 滚动后米白底：logo 恢复黑色 */
.site-header.scrolled .brand-mark img { filter: none; }
/* 页脚深色底：反白 */
.site-footer .brand-mark img { filter: brightness(0) invert(1); }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong {
  color: #fff; font-size: 20px; font-weight: 500; letter-spacing: 0.14em;
  transition: color 0.35s ease;
}
.brand-text small {
  color: rgba(255, 255, 255, 0.5); font-size: 9.5px; letter-spacing: 0.32em; font-weight: 400;
  transition: color 0.35s ease;
}
.site-header.scrolled .brand-text strong { color: var(--ink); }
.site-header.scrolled .brand-text small { color: var(--ink-faint); }
/* 顶部导航品牌一行横排（页脚保持竖排） */
.site-header .brand-text { flex-direction: row; align-items: baseline; gap: 10px; }

.main-nav { display: flex; gap: 6px; margin: 0 auto; }
.main-nav a {
  position: relative; display: inline-flex; align-items: center;
  min-height: var(--header-h); padding: 0 16px;
  color: rgba(255, 255, 255, 0.78); font-size: 13.5px; font-weight: 400;
  letter-spacing: 0.1em; transition: color 0.25s ease;
}
.main-nav a:hover { color: #fff; }
.main-nav a.active { color: #fff; font-weight: 500; }
.main-nav a::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 22px;
  height: 1px; background: var(--gold);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.35s var(--ease);
}
.main-nav a:hover::after, .main-nav a.active::after { transform: scaleX(1); }
.site-header.scrolled .main-nav a { color: var(--ink-soft); }
.site-header.scrolled .main-nav a:hover, .site-header.scrolled .main-nav a.active { color: var(--ink); }

.header-actions { display: flex; align-items: center; gap: 18px; flex-shrink: 0; }

.lang-switch { position: relative; flex-shrink: 0; }
.lang-btn {
  display: inline-flex; align-items: center; gap: 7px;
  height: 40px; padding: 0 6px;
  background: transparent; border: 0;
  color: rgba(255, 255, 255, 0.8); font-size: 13px; font-weight: 400; letter-spacing: 0.1em;
  cursor: pointer; transition: color 0.25s ease;
}
.lang-btn::after {
  content: ""; width: 5px; height: 5px; margin-left: 2px;
  border-right: 1px solid currentColor; border-bottom: 1px solid currentColor;
  transform: rotate(45deg) translateY(-2px); opacity: 0.7;
}
.lang-btn:hover { color: #fff; }
.site-header.scrolled .lang-btn { color: var(--ink-soft); }
.site-header.scrolled .lang-btn:hover { color: var(--ink); }
.lang-menu {
  position: absolute; top: calc(100% + 8px); right: 0; z-index: 300;
  min-width: 140px; padding: 6px;
  background: #fff; border: 1px solid var(--line-light); border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md); display: none;
}
.lang-menu.open { display: block; }
.lang-menu button {
  display: block; width: 100%; padding: 10px 14px;
  color: var(--ink); font-size: 13.5px; text-align: left; letter-spacing: 0.06em;
  background: transparent; border: 0; cursor: pointer;
}
.lang-menu button:hover { background: var(--light); color: var(--gold-deep); }

html[lang="en"] .en-hide { display: none; }

.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 6px;
  width: 44px; height: 44px; padding: 10px;
  background: transparent; border: 0; cursor: pointer;
}
.nav-toggle span { display: block; height: 1px; width: 24px; background: #fff; transition: all 0.25s ease; }
.site-header.scrolled .nav-toggle span { background: var(--ink); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 3. 按钮（直角、无渐变、文字式） ---------- */
.btn {
  position: relative;
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 50px; padding: 0 32px;
  border-radius: var(--radius-sm); border: 1px solid transparent;
  font-family: var(--font); font-size: 13.5px; font-weight: 500; letter-spacing: 0.14em;
  cursor: pointer; transition: all 0.3s var(--ease);
  white-space: nowrap;
}
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: #3a3c44; transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }
/* 深色区块内主按钮：白字描边 → hover 白底黑字 */
.hero .btn-primary, .cta-band .btn-primary, .page-hero .btn-primary {
  background: transparent; color: #fff; border-color: rgba(255, 255, 255, 0.5);
}
.hero .btn-primary:hover, .cta-band .btn-primary:hover, .page-hero .btn-primary:hover {
  background: #fff; color: var(--ink); border-color: #fff;
}
.btn-outline { background: transparent; color: var(--ink); border-color: rgba(23, 24, 26, 0.4); }
.btn-outline:hover { border-color: var(--ink); background: var(--ink); color: #fff; }
.btn-ghost-light { background: transparent; color: #fff; border-color: rgba(255, 255, 255, 0.5); }
.btn-ghost-light:hover { background: #fff; color: var(--ink); border-color: #fff; }
.btn-sm { min-height: 42px; padding: 0 24px; font-size: 12.5px; }

/* 价格（金色细体大字） */
.price {
  display: inline-block; margin: 4px 0 12px;
  font-size: 24px; font-weight: 300; letter-spacing: 0.04em;
  color: var(--gold-deep); font-variant-numeric: tabular-nums;
}
.detail-price {
  display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap;
  margin: 8px 0 28px; padding-bottom: 24px;
  border-bottom: 1px solid var(--line-light);
}
.detail-price strong {
  font-size: 44px; font-weight: 300; letter-spacing: 0.03em;
  color: var(--gold-deep); font-variant-numeric: tabular-nums;
}
.detail-price span { font-size: 12.5px; color: var(--ink-soft); letter-spacing: 0.12em; text-transform: uppercase; }

/* 尺寸标注线（签名元素，奢侈品式细线） */
.dimline { display: inline-flex; align-items: center; }
.dimline .bar {
  position: relative; display: block;
  width: 56px; height: 0;
  border-top: 1px solid var(--gold);
}
.dimline .bar::before {
  content: ""; position: absolute; left: 0; top: -2.5px;
  width: 5px; height: 5px; border-radius: 50%; background: var(--gold);
}
.dimline .bar::after {
  content: ""; position: absolute; right: 0; top: -2.5px;
  width: 5px; height: 5px; border-radius: 50%; background: var(--gold);
}

/* 章节标题（细体大字 + 大留白） */
.section { padding: 150px 0; position: relative; }
.section-alt { background: #fff; }
.section-head { max-width: 760px; margin-bottom: 80px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 14px;
  font-size: 12px; font-weight: 500; letter-spacing: 0.34em;
  color: var(--gold-deep); text-transform: uppercase;
  margin-bottom: 22px;
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--gold); }
.section-head h2 {
  font-size: clamp(30px, 3.6vw, 46px); font-weight: 300; letter-spacing: 0.04em;
  color: var(--ink); margin-bottom: 20px; line-height: 1.25;
}
.section-head h2 em { font-style: normal; color: var(--gold-deep); }
.section-head p { color: var(--ink-soft); font-size: 15.5px; max-width: 620px; }

/* 通用标签 */
.tag {
  display: inline-block; font-size: 11px; font-weight: 500; letter-spacing: 0.22em;
  color: var(--gold-deep); padding: 0 0 4px; border-bottom: 1px solid var(--gold);
  text-transform: uppercase;
}

/* 文字链接（下划线动效） */
.card-link {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 500; letter-spacing: 0.16em;
  color: var(--ink); position: relative; padding-bottom: 4px;
}
.card-link::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0;
  height: 1px; background: var(--gold);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.35s var(--ease);
}
.card-link:hover::after { transform: scaleX(1); }
.card-link svg { transition: transform 0.3s var(--ease); }
.card-link:hover svg { transform: translateX(4px); }

/* ---------- 4. Hero 全屏沉浸 ---------- */
.hero {
  position: relative; min-height: 100vh; overflow: hidden;
  background: var(--dark); color: #fff;
  display: flex; align-items: center;
}
.hero::after {
  content: ""; position: absolute; left: 50%; bottom: 34px; z-index: 6;
  width: 1px; height: 46px; margin-left: -0.5px;
  background: linear-gradient(180deg, rgba(255,255,255,0.55), transparent);
  animation: scrollHint 2.4s var(--ease) infinite;
}
@keyframes scrollHint {
  0%, 100% { transform: translateY(-6px); opacity: 0.4; }
  50% { transform: translateY(6px); opacity: 1; }
}
.hero-slide { position: absolute; inset: 0; opacity: 0; transition: opacity 1.2s ease; }
.hero-slide.active { opacity: 1; }
.hero-slide img { width: 100%; height: 100%; object-fit: cover; }
.hero-slide::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(96deg, rgba(10, 10, 11, 0.94) 0%, rgba(10, 10, 11, 0.72) 46%, rgba(10, 10, 11, 0.25) 100%);
}
.hero-content {
  position: relative; z-index: 5;
  width: 100%;
  padding: 150px 24px 120px;
}
.hero-kicker {
  display: inline-flex; align-items: center; gap: 16px;
  font-size: 12px; font-weight: 400; letter-spacing: 0.42em;
  color: var(--gold); text-transform: uppercase; margin-bottom: 34px;
}
.hero-kicker::before { content: ""; width: 40px; height: 1px; background: var(--gold); }
.hero-content h1 {
  font-size: clamp(42px, 6.6vw, 86px);
  font-weight: 300; line-height: 1.12; letter-spacing: 0.02em;
  max-width: 860px; margin-bottom: 34px; color: #fff;
}
.hero-content h1 .hl { color: var(--gold); font-weight: 300; }
.hero-sub {
  max-width: 560px; font-size: 16px; font-weight: 300; line-height: 2;
  color: rgba(255, 255, 255, 0.66); margin-bottom: 52px;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 18px; }
.hero-dots {
  position: absolute; left: 24px; bottom: 96px; z-index: 6;
  display: flex; gap: 8px;
}
.hero-dots button {
  width: 26px; height: 1px; padding: 0; border: 0; cursor: pointer;
  background: rgba(255, 255, 255, 0.3);
  transition: background 0.25s ease, width 0.25s ease;
}
.hero-dots button.active { background: var(--gold); width: 44px; }

/* ---------- 5. 品牌叙述（introduction） ---------- */
.intro-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 90px; align-items: center; }
.intro-media { position: relative; }
.intro-media img { width: 100%; border-radius: var(--radius); }
.intro-badge {
  position: absolute; right: 16px; bottom: 16px;
  background: rgba(10, 10, 11, 0.92); color: #fff;
  padding: 20px 26px; min-width: 150px;
  backdrop-filter: blur(6px);
}
.intro-badge strong { display: block; font-size: 30px; font-weight: 300; letter-spacing: 0.06em; color: var(--gold); }
.intro-badge span { font-size: 11px; letter-spacing: 0.24em; color: rgba(255,255,255,0.6); }
.intro-copy .eyebrow { margin-bottom: 24px; }
.intro-copy h2 { font-size: clamp(28px, 3.2vw, 42px); font-weight: 300; line-height: 1.3; margin: 0 0 24px; }
.intro-copy h2 em { font-style: normal; color: var(--gold-deep); }
.intro-copy p { color: var(--ink-soft); margin-bottom: 20px; }
.intro-list { margin: 26px 0 38px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px 24px; }
.intro-list li {
  display: flex; align-items: center; gap: 12px;
  font-size: 14.5px; color: var(--ink); font-weight: 400; letter-spacing: 0.04em;
}
.intro-list li svg { flex-shrink: 0; color: var(--gold-deep); width: 16px; height: 16px; }

/* ---------- 6. 数据条（深色大字） ---------- */
.stats-band { background: var(--dark); color: #fff; padding: 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat-cell {
  padding: 90px 28px; text-align: center;
  border-left: 1px solid var(--line-dark);
}
.stat-cell:first-child { border-left: 0; }
.stat-cell strong {
  display: block; font-size: clamp(40px, 4.6vw, 62px); font-weight: 300;
  color: var(--gold); font-variant-numeric: tabular-nums; line-height: 1.1;
  letter-spacing: 0.03em;
}
.stat-cell strong em { font-style: normal; font-size: 0.42em; margin-left: 3px; color: rgba(255,255,255,0.9); }
.stat-cell span {
  display: block; margin-top: 16px; font-size: 12px; font-weight: 400;
  color: rgba(255, 255, 255, 0.5); letter-spacing: 0.3em; text-transform: uppercase;
}

/* ---------- 7. 核心产品（无卡片盒，图为主） ---------- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.product-card { display: flex; flex-direction: column; gap: 22px; }
.product-card .thumb { position: relative; display: block; overflow: hidden; aspect-ratio: 4 / 5; background: var(--light-2); }
.product-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s var(--ease); }
.product-card:hover .thumb img { transform: scale(1.045); }
.product-card .thumb .tag {
  position: absolute; left: 0; top: 20px; z-index: 2;
  background: rgba(10, 10, 11, 0.88); color: var(--gold);
  padding: 8px 16px; border-bottom: 0;
}
.product-card .body { display: flex; flex-direction: column; padding: 0 4px; }
.product-card h3 { font-size: 21px; font-weight: 400; letter-spacing: 0.05em; margin-bottom: 6px; }
.product-card .price { font-size: 20px; }
.product-card p { font-size: 14px; color: var(--ink-soft); margin-bottom: 18px; flex: 1; }

/* ---------- 8. 核心优势（编号排版，无盒） ---------- */
.advantage-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px 56px; }
.adv-card { padding: 0 8px; }
.adv-card .no {
  display: block; font-size: 44px; font-weight: 300; line-height: 1;
  color: transparent; -webkit-text-stroke: 1px var(--gold);
  margin-bottom: 26px; font-variant-numeric: tabular-nums;
}
.adv-card .adv-icon { color: var(--gold-deep); margin-bottom: 18px; display: inline-flex; }
.adv-card .adv-icon svg { width: 26px; height: 26px; }
.adv-card h3 { font-size: 20px; font-weight: 400; letter-spacing: 0.05em; margin-bottom: 10px; }
.adv-card p { font-size: 14.5px; color: var(--ink-soft); max-width: 320px; }
.adv-card .dimline { margin-top: 24px; }
.adv-card .dimline .bar { width: 40px; }

/* ---------- 9. 客户行业墙（深色） ---------- */
.client-band { background: var(--dark); color: #fff; padding: 130px 0; }
.client-band .section-head h2 { color: #fff; }
.client-band .section-head p { color: rgba(255,255,255,0.55); }
.client-band .eyebrow { color: var(--gold); }
.client-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 18px; }
.client-tags span {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 14px 26px; border: 1px solid var(--line-dark);
  font-size: 14px; font-weight: 300; letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.82); transition: all 0.3s var(--ease);
}
.client-tags span::before { content: ""; width: 4px; height: 4px; border-radius: 50%; background: var(--gold); }
.client-tags span:hover { border-color: var(--gold); color: #fff; transform: translateY(-2px); }

/* ---------- 10. 场景 / 案例（大图卡） ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.case-card { position: relative; display: block; overflow: hidden; aspect-ratio: 4 / 3; background: var(--dark-2); }
.case-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.9s var(--ease); }
.case-card::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10,10,11,0) 45%, rgba(10,10,11,0.9) 100%);
}
.case-card:hover img { transform: scale(1.05); }
.case-card .cap { position: absolute; left: 0; right: 0; bottom: 0; z-index: 2; padding: 28px 30px; color: #fff; }
.case-card .cap .ind { font-size: 11px; font-weight: 400; letter-spacing: 0.32em; color: var(--gold); margin-bottom: 10px; text-transform: uppercase; }
.case-card .cap h3 { font-size: 22px; font-weight: 300; letter-spacing: 0.04em; color: #fff; }
.case-card .cap p { font-size: 13px; color: rgba(255,255,255,0.65); margin-top: 8px; }
.case-card .cap .dimline { margin-top: 16px; }
.case-card .cap .dimline .bar { border-top-color: var(--gold); width: 40px; }
.case-card .cap .dimline .bar::before, .case-card .cap .dimline .bar::after { background: var(--gold); }

/* ---------- 11. 新闻（首页三卡 → 简约卡） ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.news-card {
  display: flex; flex-direction: column; gap: 14px;
  padding: 6px 4px 26px; border-bottom: 1px solid var(--line-light);
  transition: border-color 0.3s ease;
}
.news-card:hover { border-bottom-color: var(--gold); }
.news-card .date { font-size: 12px; color: var(--ink-faint); font-variant-numeric: tabular-nums; letter-spacing: 0.12em; }
.news-card .cat { font-size: 11px; font-weight: 500; letter-spacing: 0.22em; color: var(--gold-deep); text-transform: uppercase; }
.news-card h3 { font-size: 18px; font-weight: 400; letter-spacing: 0.04em; line-height: 1.55; }
.news-card p { font-size: 14px; color: var(--ink-soft); }
.news-card .more { margin-top: 6px; font-size: 12.5px; font-weight: 500; letter-spacing: 0.16em; color: var(--ink); display: inline-flex; align-items: center; gap: 8px; }
.news-card .more svg { transition: transform 0.3s var(--ease); }
.news-card:hover .more svg { transform: translateX(4px); }

/* ---------- 12. CTA 横幅（深色大字） ---------- */
.cta-band { background: var(--dark); color: #fff; padding: 150px 0; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 60px; flex-wrap: wrap; }
.cta-inner h2 { font-size: clamp(30px, 3.6vw, 46px); font-weight: 300; letter-spacing: 0.04em; color: #fff; margin-bottom: 14px; }
.cta-inner p { color: rgba(255, 255, 255, 0.6); max-width: 560px; font-weight: 300; }
.cta-inner .dimline { margin-top: 20px; }
.cta-actions { display: flex; gap: 18px; flex-wrap: wrap; }

/* ---------- 13. 内页通用 ---------- */
.page-hero {
  position: relative; background: var(--dark); color: #fff;
  padding: calc(var(--header-h) + 90px) 0 96px; overflow: hidden;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(700px 360px at 84% -10%, rgba(185, 152, 85, 0.1), transparent 62%),
    radial-gradient(520px 280px at 8% 110%, rgba(185, 152, 85, 0.05), transparent 60%);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero .eyebrow { color: var(--gold); }
.page-hero h1 { font-size: clamp(34px, 4.4vw, 54px); font-weight: 300; letter-spacing: 0.04em; color: #fff; margin: 8px 0 20px; }
.page-hero .crumb { font-size: 12px; letter-spacing: 0.24em; color: rgba(255,255,255,0.5); font-weight: 400; text-transform: uppercase; }
.page-hero .crumb a:hover { color: var(--gold); }
.page-hero p.lead { max-width: 620px; color: rgba(255,255,255,0.66); font-size: 16px; font-weight: 300; line-height: 2; }
.page-hero .dimline { margin-top: 28px; }

/* 面包屑回到列表 */
.back-link {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 400; font-size: 13px; letter-spacing: 0.14em;
  color: var(--ink-soft); margin-bottom: 32px; transition: color 0.25s ease;
}
.back-link:hover { color: var(--gold-deep); }

/* ---------- 14. 关于我们 ---------- */
.timeline { position: relative; max-width: 820px; margin: 0 auto; padding-left: 30px; }
.timeline::before { content: ""; position: absolute; left: 5px; top: 8px; bottom: 8px; width: 1px; background: var(--line-light); }
.tl-item { position: relative; padding: 0 0 48px 32px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ""; position: absolute; left: -30px; top: 8px;
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--light); border: 1px solid var(--gold);
}
.tl-item .year {
  display: inline-block; font-size: 11px; font-weight: 500; letter-spacing: 0.28em;
  color: var(--gold-deep); margin-bottom: 10px; text-transform: uppercase;
}
.tl-item h3 { font-size: 20px; font-weight: 400; letter-spacing: 0.04em; margin-bottom: 8px; }
.tl-item p { color: var(--ink-soft); font-size: 14.5px; }

.split-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.split-grid img { width: 100%; border-radius: var(--radius); }
.qual-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; }
.qual-item {
  display: flex; align-items: flex-start; gap: 18px;
  padding: 26px 24px 26px 0; border-bottom: 1px solid var(--line-light);
}
.qual-grid .qual-item:nth-child(odd) { border-right: 1px solid var(--line-light); padding-right: 32px; }
.qual-grid .qual-item:nth-child(even) { padding-left: 32px; }
.qual-item svg { flex-shrink: 0; color: var(--gold-deep); margin-top: 3px; }
.qual-item strong { display: block; font-size: 16px; font-weight: 500; letter-spacing: 0.04em; color: var(--ink); margin-bottom: 4px; }
.qual-item span { font-size: 13.5px; color: var(--ink-soft); }

/* ---------- 15. 产品中心 ---------- */
.prod-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 56px; }
.prod-card { display: grid; grid-template-columns: 220px 1fr; gap: 36px; align-items: start; }
.prod-card .thumb { display: block; overflow: hidden; background: var(--light-2); }
.prod-card .thumb img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; transition: transform 0.8s var(--ease); }
.prod-card:hover .thumb img { transform: scale(1.05); }
.prod-card .info { display: flex; flex-direction: column; padding-top: 6px; }
.prod-card .info .tag { margin-bottom: 14px; }
.prod-card .info h3 { font-size: 22px; font-weight: 400; letter-spacing: 0.05em; margin-bottom: 10px; }
.prod-card .info p { font-size: 14.5px; color: var(--ink-soft); margin-bottom: 20px; flex: 1; }
.prod-card .info .dimline { margin-bottom: 20px; }
.prod-card .info .dimline .bar { width: 44px; }

/* 产品详情 */
.detail-hero { background: #fff; padding: 60px 0; }
.detail-layout { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 80px; align-items: start; }
.detail-media img { width: 100%; border-radius: var(--radius); }
.detail-info .tag { margin-bottom: 20px; }
.detail-info h1 { font-size: clamp(28px, 3.4vw, 42px); font-weight: 300; letter-spacing: 0.04em; margin-bottom: 16px; }
.detail-info .lead { color: var(--ink-soft); font-size: 15.5px; margin-bottom: 30px; }
.spec-table { width: 100%; border-collapse: collapse; margin-bottom: 30px; font-size: 14px; }
.spec-table th, .spec-table td { text-align: left; padding: 14px 8px; border-bottom: 1px solid var(--line-light); }
.spec-table th { color: var(--ink-soft); font-weight: 400; width: 34%; letter-spacing: 0.06em; }
.spec-table td { color: var(--ink); font-variant-numeric: tabular-nums; }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: 0; }
.detail-cta { display: flex; gap: 16px; flex-wrap: wrap; }
.detail-body { padding: 110px 0; }
.detail-body h2 { font-size: 30px; font-weight: 300; letter-spacing: 0.04em; margin-bottom: 22px; }
.detail-body p { color: var(--ink-soft); margin-bottom: 18px; max-width: 860px; }
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin: 36px 0; }
.feat-item { padding: 8px 4px 30px; border-bottom: 1px solid var(--line-light); }
.feat-item svg { color: var(--gold-deep); margin-bottom: 18px; }
.feat-item h3 { font-size: 18px; font-weight: 500; letter-spacing: 0.05em; margin-bottom: 8px; }
.feat-item p { font-size: 14px; color: var(--ink-soft); }
.expr-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin: 32px 0 8px; }
.expr-item { border: 1px solid var(--line-light); padding: 20px 18px 16px; transition: border-color 0.25s ease, transform 0.25s ease; }
.expr-item:hover { border-color: var(--gold); transform: translateY(-3px); }
.expr-cn { display: block; font-size: 16px; font-weight: 500; letter-spacing: 0.04em; }
.expr-en { display: inline-block; margin-top: 6px; font-size: 10px; font-weight: 400; letter-spacing: 0.14em; color: var(--ink-faint); }
.expr-item p { margin-top: 12px; font-size: 12.5px; color: var(--ink-soft); line-height: 1.7; }

/* ---------- 16. 案例 ---------- */
.case-grid-lg { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.case-card-lg { position: relative; display: block; overflow: hidden; aspect-ratio: 4/3; background: var(--dark-2); }
.case-card-lg img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.9s var(--ease); }
.case-card-lg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(10,10,11,0) 46%, rgba(10,10,11,0.9) 100%); }
.case-card-lg:hover img { transform: scale(1.05); }
.case-card-lg .cap { position: absolute; left: 0; right: 0; bottom: 0; z-index: 2; padding: 30px 32px; color: #fff; }
.case-card-lg .cap .ind { font-size: 11px; font-weight: 400; letter-spacing: 0.32em; color: var(--gold); margin-bottom: 10px; text-transform: uppercase; }
.case-card-lg .cap h3 { font-size: 24px; font-weight: 300; color: #fff; }
.case-card-lg .cap p { font-size: 13.5px; color: rgba(255,255,255,0.65); margin-top: 8px; }
.case-card-lg .cap .dimline { margin-top: 16px; }
.case-card-lg .cap .dimline .bar { border-top-color: var(--gold); width: 44px; }
.case-card-lg .cap .dimline .bar::before, .case-card-lg .cap .dimline .bar::after { background: var(--gold); }

.case-detail-head { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; }
.case-detail-head img { width: 100%; border-radius: var(--radius); }
.case-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin: 40px 0; }
.case-fact { padding: 26px 24px 26px 0; border-bottom: 1px solid var(--line-light); }
.case-facts .case-fact:nth-child(2) { border-left: 1px solid var(--line-light); padding-left: 32px; }
.case-facts .case-fact:nth-child(3) { border-left: 1px solid var(--line-light); padding-left: 32px; }
.case-fact strong { display: block; font-size: 34px; font-weight: 300; letter-spacing: 0.02em; color: var(--gold-deep); font-variant-numeric: tabular-nums; }
.case-fact span { font-size: 12.5px; color: var(--ink-soft); letter-spacing: 0.1em; }

/* ---------- 17. 新闻列表 / 文章 ---------- */
.news-list { max-width: 920px; margin: 0 auto; }
.news-row {
  display: grid; grid-template-columns: 150px 1fr auto; gap: 36px; align-items: center;
  padding: 36px 8px; border-bottom: 1px solid var(--line-light);
  transition: padding 0.25s ease;
}
.news-row:first-child { border-top: 1px solid var(--line-light); }
.news-row:hover { padding-left: 16px; }
.news-row .date { font-size: 12px; color: var(--ink-faint); font-variant-numeric: tabular-nums; letter-spacing: 0.1em; }
.news-row .date strong { display: block; font-size: 30px; color: var(--gold-deep); font-weight: 300; }
.news-row h3 { font-size: 20px; font-weight: 400; letter-spacing: 0.04em; margin-bottom: 6px; }
.news-row p { font-size: 14px; color: var(--ink-soft); }
.news-row .cat { font-size: 11px; font-weight: 500; letter-spacing: 0.22em; color: var(--gold-deep); text-transform: uppercase; white-space: nowrap; }
.news-row .row-end { display: inline-flex; align-items: center; gap: 16px; color: var(--ink-soft); }
.news-row:hover .row-end svg { transform: translateX(4px); transition: transform 0.25s ease; }

.article { max-width: 780px; margin: 0 auto; }
.article .meta { display: flex; flex-wrap: wrap; gap: 20px; align-items: center; color: var(--ink-faint); font-size: 13px; letter-spacing: 0.06em; padding-bottom: 26px; border-bottom: 1px solid var(--line-light); margin-bottom: 36px; }
.article .meta .cat { color: var(--gold-deep); font-weight: 500; letter-spacing: 0.22em; text-transform: uppercase; }
.article h1 { font-size: clamp(28px, 3.4vw, 40px); font-weight: 300; letter-spacing: 0.03em; margin-bottom: 10px; }
.article h2 { font-size: 24px; font-weight: 400; letter-spacing: 0.04em; margin: 42px 0 16px; position: relative; padding-left: 16px; }
.article h2::before { content: ""; position: absolute; left: 0; top: 0.18em; bottom: 0.18em; width: 3px; background: var(--gold); }
.article p { color: var(--ink-soft); margin-bottom: 20px; }
.article .dimline { margin: 32px 0; }

/* ---------- 18. 联系我们 ---------- */
.contact-layout { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 80px; align-items: start; }
.contact-card { padding: 10px 4px 30px; margin-bottom: 24px; border-bottom: 1px solid var(--line-light); }
.contact-card h3 { font-size: 15px; font-weight: 500; letter-spacing: 0.16em; margin-bottom: 20px; display: flex; align-items: center; gap: 12px; text-transform: uppercase; }
.contact-card h3 svg { color: var(--gold-deep); }
.contact-card ul li { display: flex; gap: 16px; padding: 10px 0; font-size: 14.5px; color: var(--ink-soft); }
.contact-card ul li strong { color: var(--ink); font-weight: 500; min-width: 72px; }
.map-box {
  position: relative; overflow: hidden;
  background: var(--light-2); min-height: 260px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--line-light);
}
.map-box svg { position: absolute; opacity: 0.4; }
.map-pin {
  position: relative; z-index: 2; text-align: center;
  background: var(--dark); color: #fff;
  padding: 14px 26px; font-size: 13px; font-weight: 400; letter-spacing: 0.08em;
}
.map-pin::after {
  content: ""; position: absolute; left: 50%; bottom: -7px;
  transform: translateX(-50%);
  border: 7px solid transparent; border-top-color: var(--dark); border-bottom: 0;
}
.contact-form { padding: 10px 6px 0; }
.contact-form h2 { font-size: 30px; font-weight: 300; letter-spacing: 0.04em; margin-bottom: 10px; }
.contact-form > p { color: var(--ink-soft); font-size: 14.5px; margin-bottom: 40px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.form-field { display: flex; flex-direction: column; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { font-size: 12px; font-weight: 500; letter-spacing: 0.2em; color: var(--ink-soft); text-transform: uppercase; margin-bottom: 12px; }
.form-field label em { font-style: normal; color: var(--gold-deep); }
.form-field input, .form-field textarea, .form-field select {
  font-family: var(--font); font-size: 15px; font-weight: 400; color: var(--ink);
  padding: 12px 2px; background: transparent;
  border: 0; border-bottom: 1px solid var(--line-light); border-radius: 0;
  transition: border-color 0.25s ease;
}
.form-field input:focus, .form-field textarea:focus, .form-field select:focus {
  outline: none; border-bottom-color: var(--gold);
}
.form-field textarea { min-height: 110px; resize: vertical; }
.form-actions { margin-top: 44px; }
.form-tip { font-size: 12.5px; color: var(--ink-faint); margin-top: 16px; letter-spacing: 0.04em; }
.form-ok, .form-err {
  display: none;
  margin-top: 28px; padding: 16px 20px;
  font-size: 14px; line-height: 1.7; letter-spacing: 0.02em;
  border-left: 2px solid var(--gold-deep);
  background: rgba(185, 152, 85, 0.08);
  color: var(--ink-soft);
}
.form-ok.show { display: block; }
.form-err { border-left-color: #c0392b; background: rgba(192, 57, 43, 0.06); color: #a13a2c; }

/* ---------- 19. 页脚 ---------- */
.site-footer { background: var(--dark); color: rgba(255, 255, 255, 0.62); }
.site-footer::before {
  content: ""; display: block; height: 1px;
  background: linear-gradient(90deg, var(--gold) 0%, rgba(185,152,85,0.25) 30%, transparent 80%);
}
.footer-top {
  display: grid; grid-template-columns: 1.5fr 0.8fr 1fr 1.2fr; gap: 60px;
  padding: 100px 24px 70px;
}
.footer-brand { max-width: 340px; }
.brand-light .brand-text strong { color: #fff; }
.brand-light .brand-text small { color: rgba(255,255,255,0.4); }
.footer-desc { font-size: 14px; font-weight: 300; color: rgba(255,255,255,0.5); margin: 24px 0; line-height: 2; }
.footer-cert { margin-top: 24px; display: flex; align-items: center; gap: 16px; }
.cert-txt { font-size: 11px; letter-spacing: 0.24em; color: rgba(255,255,255,0.4); text-transform: uppercase; }
.footer-col h4 {
  font-size: 12px; font-weight: 500; letter-spacing: 0.28em;
  color: #fff; text-transform: uppercase; margin-bottom: 26px;
}
.footer-col ul li { padding: 8px 0; }
.footer-col ul li a { font-size: 14px; font-weight: 300; color: rgba(255,255,255,0.55); transition: color 0.25s ease; }
.footer-col ul li a:hover { color: var(--gold); }
.footer-contact li { font-size: 14px; font-weight: 300; color: rgba(255,255,255,0.55); }
.footer-bottom { border-top: 1px solid var(--line-dark); }
.footer-bottom-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  padding: 28px 24px; font-size: 12.5px; color: rgba(255,255,255,0.35); letter-spacing: 0.06em;
}
.footer-links { display: inline-flex; align-items: center; gap: 12px; }
.footer-links a:hover { color: var(--gold); }
.footer-links .dot { opacity: 0.5; }

/* ---------- 20. 悬浮联系 ---------- */
.float-bar { position: fixed; right: 26px; bottom: 30px; z-index: 150; display: flex; flex-direction: column; gap: 12px; }
.float-item {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 18px;
  background: var(--dark); color: #fff;
  border: 1px solid rgba(255,255,255,0.18);
  font-size: 12.5px; letter-spacing: 0.1em;
  transition: all 0.3s var(--ease);
}
.float-item svg { width: 16px; height: 16px; }
.float-item:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-2px); }

/* ---------- 21. 响应式 ---------- */
@media (max-width: 1080px) {
  .advantage-grid { grid-template-columns: repeat(2, 1fr); }
  .intro-grid, .split-grid, .contact-layout, .case-detail-head { grid-template-columns: 1fr; gap: 60px; }
  .prod-grid { grid-template-columns: 1fr; gap: 44px; }
  .detail-layout { grid-template-columns: 1fr; gap: 56px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 48px; }
}

@media (max-width: 900px) {
  .main-nav {
    position: fixed; top: var(--header-h); left: 0; right: 0; bottom: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--light);
    padding: 24px 28px 48px;
    transform: translateX(100%);
    transition: transform 0.35s var(--ease);
    z-index: 190; overflow-y: auto;
  }
  .main-nav.open { transform: translateX(0); }
  .main-nav a {
    padding: 18px 2px; font-size: 19px; min-height: 58px;
    border-bottom: 1px solid var(--line-light);
    color: var(--ink) !important;
  }
  .main-nav a:hover, .main-nav a.active { color: var(--ink) !important; }
  .main-nav a::after { bottom: 14px; left: 2px; right: auto; width: 36px; }
  .nav-toggle { display: flex; }
  .header-cta { display: none; }
  .site-header .brand-text small { display: none; }
  .site-header .brand-text strong { font-size: 18px; }
  .site-header .brand-mark img { height: 32px; }
  .header-inner { gap: 16px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-cell { padding: 60px 24px; }
  .stat-cell:nth-child(odd) { border-left: 0; }
  .stat-cell:nth-child(n+3) { border-top: 1px solid var(--line-dark); }
  .product-grid, .case-grid, .case-grid-lg, .news-grid, .feat-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .expr-grid { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 100px 0; }
  .cta-band { padding: 100px 0; }
  .client-band { padding: 100px 0; }
  .intro-list { grid-template-columns: 1fr; }
  .news-row { grid-template-columns: 1fr; gap: 12px; padding: 30px 4px; }
  .news-row .row-end { justify-self: start; }
  .news-row .row-end svg { display: none; }
  .form-grid { grid-template-columns: 1fr; gap: 26px; }
  .footer-top { grid-template-columns: 1fr; gap: 44px; }
  .qual-grid { grid-template-columns: 1fr; }
  .qual-grid .qual-item:nth-child(odd) { border-right: 0; padding-right: 0; }
  .qual-grid .qual-item:nth-child(even) { padding-left: 0; }
  .case-facts { grid-template-columns: 1fr; gap: 0; }
  .case-facts .case-fact:nth-child(2), .case-facts .case-fact:nth-child(3) { border-left: 0; padding-left: 0; }
  .hero { min-height: 92vh; }
  .hero-content { padding: 140px 24px 100px; }
}

@media (max-width: 560px) {
  .product-grid, .case-grid, .case-grid-lg, .news-grid, .feat-grid { grid-template-columns: 1fr; }
  .section { padding: 84px 0; }
  .section-head { margin-bottom: 52px; }
  .prod-card { grid-template-columns: 1fr; gap: 24px; }
  .prod-card .thumb img { aspect-ratio: 4 / 3; }
  .footer-bottom-inner { flex-direction: column; text-align: center; }
  .hero-content h1 { font-size: clamp(36px, 10vw, 52px); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}