/* ============================================================
   成都荃晟科技服务有限公司 · 官网样式
   品牌蓝 #0068a8 · 橙色点缀 #e87518 · 英文衬线标题 (Bodoni MT)
   参考风格：企业环保科技风 · 绿色建材整体方案
   ============================================================ */

:root {
  /* 主色 · 品牌蓝 */
  --green-50:   #e8f1f8;
  --green-100:  #c9e2f0;
  --green-200:  #9ec8e8;
  --green-300:  #66a8dc;
  --green-400:  #368fc4;
  --green-500:  #0068a8;  /* 主品牌色 */
  --green-600:  #005d96;  /* 深蓝（页脚/标题） */
  --green-700:  #00548a;  /* 导航深条 */
  --green-800:  #004266;
  --green-900:  #0d3050;

  /* 点缀色 */
  --orange: #e87518;      /* 参考站链接悬停/强调橙 */
  --red:    #bf1d23;      /* 关键强调（慎用） */
  --mint:   #b9d9f0;      /* 深蓝背景上的浅色文字 */
  --mint-2: #d4e9ff;

  /* 中性色 */
  --ink:       #0b1e2e;
  --text:      #273b4e;
  --muted:     #68798c;
  --line:      #dfe7ef;
  --line-soft: #edf1f6;
  --bg:        #f4f7fa;
  --bg-white:  #ffffff;

  /* 字体 */
  --font-sans:  "PingFang SC", "Microsoft YaHei", "微软雅黑", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Bodoni MT", "Didot", "Times New Roman", Georgia, serif;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(13,48,80,.06), 0 3px 10px rgba(13,48,80,.05);
  --shadow-md: 0 6px 18px rgba(13,48,80,.09), 0 14px 34px rgba(13,48,80,.07);
  --shadow-lg: 0 14px 42px rgba(13,48,80,.16), 0 26px 70px rgba(13,48,80,.11);

  /* 圆角 */
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 26px;

  --container: 1200px;

  --grad-primary: linear-gradient(135deg, #005d96 0%, #0068a8 55%, #2f9fd4 100%);
  --grad-dark:    linear-gradient(135deg, #0d3050 0%, #004266 55%, #00548a 100%);
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg-white);
  line-height: 1.7;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

a { color: inherit; text-decoration: none; transition: color .18s ease; }
/* 参考站全局链接悬停为橙色点缀 */
a:hover { color: var(--orange); }

::selection { background: var(--green-500); color: #fff; }

/* ---------- 通用布局 ---------- */
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section--alt { background: var(--bg); }
.section--tint { background: linear-gradient(180deg, #eff3f8 0%, #ffffff 100%); }
/* 绿色满幅区块（参考站 产品中心/工程案例 绿底 + 浅色衬线标题） */
.section--green { background: var(--grad-dark); color: #fff; }
.section--green .eyebrow { color: var(--mint); }
.section--green .eyebrow::before, .section--green .eyebrow::after { background: var(--green-300); }
.section--green .section-title { color: #fff; }
.section--green .section-title em { color: var(--mint); }
.section--green .section-desc { color: rgba(255,255,255,.78); }

.section-head { max-width: 760px; margin: 0 auto 52px; text-align: center; }
.section-head--left { margin-left: 0; text-align: left; }

/* 英文衬线眉题 + 中文标题（参考站：英文大写衬线 + 中文副题） */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-serif);
  font-size: 15px; font-weight: 600; letter-spacing: .18em;
  color: var(--green-500); text-transform: uppercase;
}
.eyebrow::before, .eyebrow::after { content: ""; width: 26px; height: 1px; background: var(--green-300); }
.section-title { font-size: 36px; font-weight: 800; color: var(--ink); letter-spacing: -1px; margin: 14px 0 14px; line-height: 1.25; }
.section-title em { font-style: normal; color: var(--green-500); }
.section-desc { font-size: 16px; color: var(--muted); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 30px; border-radius: 999px; font-size: 15px; font-weight: 700;
  transition: transform .2s ease, box-shadow .25s ease, background .25s ease, color .25s ease;
  white-space: nowrap;
}
.btn:hover { color: #fff; }
.btn-primary { background: var(--grad-primary); color: #fff; box-shadow: 0 8px 20px rgba(0,93,150,.3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(0,93,150,.42); }
.btn-ghost { background: rgba(255,255,255,.16); color: #fff; border: 1px solid rgba(255,255,255,.5); }
.btn-ghost:hover { background: rgba(255,255,255,.28); transform: translateY(-2px); }
.btn-outline { background: #fff; color: var(--green-600); border: 1.5px solid var(--green-200); }
.btn-outline:hover { background: var(--green-50); border-color: var(--green-500); transform: translateY(-2px); color: var(--green-700); }
.btn-sm { padding: 10px 20px; font-size: 13.5px; }

/* ============================================================
   头部 · 三层结构（参考站 heade_top / top / menu）
   ============================================================ */

/* 第 1 层：顶部信息条（绿） */
.topbar {
  background: var(--green-500); color: var(--mint-2);
  font-size: 13px; line-height: 38px; position: relative; z-index: 60;
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 38px; }
.topbar-welcome { letter-spacing: .02em; }
.topbar-links { display: flex; align-items: center; gap: 8px; }
.topbar-links a { color: var(--mint-2); }
.topbar-links a:hover { color: #fff; }
.topbar .sep { opacity: .4; margin: 0 4px; }

/* 第 2 层：白色品牌头部（Logo + 搜索 + 热线） */
.header {
  background: #fff; border-bottom: 1px solid var(--line-soft);
  position: relative; z-index: 55;
}
.header-inner { display: flex; align-items: center; gap: 32px; height: 112px; }
.brand { display: flex; align-items: center; gap: 13px; flex: none; }
.brand:hover { color: inherit; }
.brand-logo {
  width: 52px; height: 52px; border-radius: 14px; flex: none;
  background: var(--grad-primary);
  display: grid; place-items: center; color: #fff; font-weight: 900; font-size: 22px;
  box-shadow: 0 6px 16px rgba(0,93,150,.3);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.3; }
.brand-name { font-size: 22px; font-weight: 800; color: var(--ink); letter-spacing: -.5px; }
.brand-sub { font-size: 12px; color: var(--muted); margin-top: 3px; }

/* 搜索区 */
.header-search { flex: 1; max-width: 400px; margin-left: auto; }
.header-search form { display: flex; border: 1px solid var(--green-200); border-radius: 8px; overflow: hidden; height: 40px; }
.header-search input {
  flex: 1; border: none; outline: none; padding: 0 14px; font-size: 14px; color: var(--text);
  font-family: inherit; min-width: 0;
}
.header-search button {
  background: var(--green-500); color: #fff; font-size: 14px; padding: 0 22px; white-space: nowrap;
}
.header-search button:hover { background: var(--green-700); }
.hot-keys { font-size: 12px; color: var(--muted); margin-top: 7px; }
.hot-keys a { color: var(--green-600); margin-left: 8px; }
.hot-keys a:hover { color: var(--orange); }

/* 服务热线 */
.header-tel { flex: none; display: flex; flex-direction: column; align-items: flex-end; padding-left: 26px; border-left: 1px solid var(--line-soft); }
.tel-label { font-size: 12px; color: var(--muted); letter-spacing: .04em; }
.tel-num { font-size: 26px; font-weight: 900; color: var(--green-500); line-height: 1.2; letter-spacing: .5px; }
.tel-num:hover { color: var(--orange); }
.tel-aux { font-size: 12px; color: var(--muted); }

/* 汉堡（移动端） */
.hamburger { display: none; width: 44px; height: 44px; border-radius: 10px; background: var(--green-50); place-items: center; flex: none; }
.hamburger span { display: block; width: 20px; height: 2px; background: var(--green-800); margin: 2.5px 0; transition: .3s; border-radius: 2px; }

/* 第 3 层：绿色主导航条 */
.navbar {
  background: linear-gradient(180deg, var(--green-700) 0%, var(--green-600) 100%);
  border-top: 3px solid var(--green-500);
  position: sticky; top: 0; z-index: 54; box-shadow: 0 3px 10px rgba(0,60,42,.12);
  transition: box-shadow .25s ease;
}
.navbar.is-scrolled { box-shadow: 0 8px 22px rgba(0,60,42,.26); }
.nav-inner { display: flex; align-items: stretch; height: 52px; }
.nav-item { position: relative; display: flex; }
.nav-inner > a,
.nav-item > a {
  display: flex; align-items: center; height: 52px; padding: 0 24px;
  color: #fff; font-size: 16px; font-weight: 400; letter-spacing: .02em;
  position: relative; transition: background .2s ease, color .2s ease;
  white-space: nowrap;
}
.nav-inner > a:hover,
.nav-item > a:hover { background: rgba(0,0,0,.14); color: #fff; }
.nav-inner > a.active,
.nav-item > a.active { background: var(--green-900); color: #fff; font-weight: 700; }
.nav-inner > a.active::before,
.nav-item > a.active::before { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 3px; background: var(--orange); }

/* 下拉箭头 */
.nav-item > a .caret {
  width: 0; height: 0; margin-left: 7px;
  border-left: 4px solid transparent; border-right: 4px solid transparent;
  border-top: 5px solid rgba(255,255,255,.8); transition: transform .2s ease;
}
.nav-item:hover > a .caret { transform: rotate(180deg); }

/* 二级下拉（参考站 .sec） */
.nav-sec {
  position: absolute; top: 100%; left: 0; min-width: 176px;
  background: var(--green-600); border-top: 2px solid var(--orange);
  box-shadow: 0 12px 26px rgba(0,60,42,.30);
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: opacity .2s ease, transform .22s ease, visibility .2s ease;
  z-index: 90;
}
.nav-item:hover .nav-sec,
.nav-item:focus-within .nav-sec { opacity: 1; visibility: visible; transform: translateY(0); }
.nav-sec a {
  display: block; height: auto; padding: 12px 20px;
  font-size: 14px; color: var(--mint-2); line-height: 1.4;
  border-bottom: 1px solid rgba(255,255,255,.12);
}
.nav-sec a:last-child { border-bottom: none; }
.nav-sec a:hover { background: var(--green-700); color: #fff; }

/* 联系我们 高亮按钮（参考站 lxff 高亮项） */
.nav-inner > a.nav-hot {
  background: var(--orange); color: #fff; font-weight: 700;
  padding: 0 28px; margin-left: 6px;
}
.nav-inner > a.nav-hot:hover { background: #ff8a2b; }
.nav-inner > a.nav-hot.active { background: var(--red); }
.nav-inner > a.nav-hot.active::before { display: none; }

/* 移动端菜单 */
.mobile-nav {
  position: fixed; inset: 0; z-index: 100; background: var(--green-900);
  display: flex; flex-direction: column; padding: 90px 28px 40px;
  transform: translateX(100%); transition: transform .35s cubic-bezier(.4,0,.2,1);
}
.mobile-nav.open { transform: translateX(0); }
.mobile-nav a {
  color: #fff; font-size: 20px; font-weight: 700; padding: 16px 0;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.mobile-nav a:hover { color: var(--mint); }
.mobile-nav a.active { color: var(--mint); }
.mobile-close { position: absolute; top: 20px; right: 22px; width: 46px; height: 46px; border-radius: 12px; background: rgba(255,255,255,.1); color: #fff; font-size: 22px; display: grid; place-items: center; }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 600px; display: flex; align-items: center;
  color: #fff; overflow: hidden; background: var(--green-900);
}
.hero-bg { position: absolute; inset: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: .48; transform: scale(1.02); }
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(115deg, rgba(13,48,80,.95) 0%, rgba(0,95,66,.85) 48%, rgba(0,104,168,.42) 100%);
}
.hero-deco { position: absolute; inset: 0; pointer-events: none; }
.hero-deco::before { content: ""; position: absolute; right: -160px; top: -160px; width: 480px; height: 480px; border-radius: 50%; background: radial-gradient(circle, rgba(185,217,240,.16), transparent 64%); }
.hero-deco::after { content: ""; position: absolute; left: -120px; bottom: -200px; width: 520px; height: 520px; border-radius: 50%; background: radial-gradient(circle, rgba(54,143,196,.2), transparent 60%); }

.hero-inner { position: relative; z-index: 2; max-width: 760px; padding: 60px 0; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 16px; border-radius: 999px;
  background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.24);
  font-size: 13px; font-weight: 600; letter-spacing: .04em;
}
.hero-tag .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 0 4px rgba(185,217,240,.25); }
.hero h1 { font-size: 52px; font-weight: 900; line-height: 1.16; letter-spacing: -1px; margin: 22px 0 20px; }
.hero h1 .hl { color: var(--mint); }
.hero-sub { font-size: 18px; color: rgba(255,255,255,.88); max-width: 620px; line-height: 1.85; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.hero-metrics { display: flex; flex-wrap: wrap; gap: 34px; margin-top: 46px; padding-top: 28px; border-top: 1px solid rgba(255,255,255,.18); }
.metric { display: flex; flex-direction: column; }
.metric b { font-size: 30px; font-weight: 900; color: #fff; letter-spacing: -.5px; font-family: var(--font-serif); }
.metric b span { color: var(--mint); font-size: 22px; margin-left: 2px; font-family: var(--font-sans); }
.metric i { font-style: normal; font-size: 13px; color: rgba(255,255,255,.7); }

.hero-side { position: absolute; right: 6%; bottom: 8%; z-index: 2; width: 320px; display: none; }
@media (min-width: 1100px) { .hero-side { display: block; } }
.hero-card {
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--r-md); padding: 18px; backdrop-filter: blur(10px);
  display: flex; gap: 14px; align-items: center; box-shadow: var(--shadow-lg);
}
.hero-card img { width: 64px; height: 64px; border-radius: 12px; object-fit: cover; flex: none; }
.hero-card .t { font-weight: 800; font-size: 15px; }
.hero-card .s { font-size: 12.5px; color: rgba(255,255,255,.8); }

/* ---------- 网格 & 卡片 ---------- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.feature-card {
  background: #fff; border: 1px solid var(--line-soft); border-radius: var(--r-md);
  padding: 30px 26px; box-shadow: var(--shadow-sm); transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease;
  position: relative; overflow: hidden; border-top: 3px solid transparent;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-top-color: var(--green-500); }
.feature-icon {
  width: 54px; height: 54px; border-radius: 14px; display: grid; place-items: center;
  background: var(--green-50); color: var(--green-600); font-size: 24px; margin-bottom: 20px; font-weight: 800;
}
.feature-card h3 { font-size: 18px; font-weight: 800; color: var(--ink); margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--muted); }

/* 数字统计条 */
.stats-bar { background: var(--grad-dark); color: #fff; padding: 46px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stat b { font-size: 40px; font-weight: 900; letter-spacing: -1px; display: block; line-height: 1; font-family: var(--font-serif); }
.stat b span { color: var(--mint); font-family: var(--font-sans); }
.stat i { font-style: normal; font-size: 14px; color: rgba(255,255,255,.72); margin-top: 8px; display: block; }

/* ---------- 产品卡片 ---------- */
.product-card {
  background: #fff; border: 1px solid var(--line-soft); border-radius: var(--r-md);
  overflow: hidden; box-shadow: var(--shadow-sm); transition: transform .3s ease, box-shadow .3s ease;
  display: flex; flex-direction: column;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--green-100); }
.product-media { position: relative; aspect-ratio: 4/3; overflow: hidden; background: var(--green-50); }
.product-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.product-card:hover .product-media img { transform: scale(1.07); }
.product-tag {
  position: absolute; top: 12px; left: 12px; padding: 4px 12px; border-radius: 999px;
  background: var(--grad-primary); color: #fff; font-size: 12px; font-weight: 700; box-shadow: var(--shadow-sm); z-index: 1;
}
.product-tag.t-amber { background: linear-gradient(135deg, #f6b64c 0%, #e87518 100%); color: #fff; }
.product-body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.product-body h3 { font-size: 18px; font-weight: 800; color: var(--ink); margin-bottom: 6px; }
.product-model { font-size: 12px; color: var(--muted); letter-spacing: .04em; margin-bottom: 10px; }
.product-desc { font-size: 13.5px; color: var(--muted); margin-bottom: 14px; flex: 1; }
.product-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.chip { font-size: 12px; padding: 4px 10px; border-radius: 999px; background: var(--green-50); color: var(--green-700); font-weight: 600; }
.chip.alt { background: #fdf1e4; color: #b45a0c; }
.product-foot { display: flex; align-items: center; justify-content: space-between; border-top: 1px solid var(--line-soft); padding-top: 14px; }
.product-price { font-size: 13px; color: var(--muted); }
.product-price b { font-size: 18px; color: var(--green-600); font-weight: 900; }
.product-link { font-size: 13px; font-weight: 700; color: var(--green-600); display: inline-flex; align-items: center; gap: 4px; }
.product-link:hover { color: var(--orange); }

/* 分类筛选 */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 40px; }
.filter-btn {
  padding: 10px 24px; border-radius: 999px; font-size: 14px; font-weight: 600; color: var(--text);
  background: #fff; border: 1px solid var(--line); transition: all .2s ease;
}
.filter-btn:hover { border-color: var(--green-400); color: var(--green-600); }
.filter-btn.active { background: var(--grad-primary); color: #fff; border-color: transparent; box-shadow: 0 6px 16px rgba(0,93,150,.26); }

/* ---------- 实拍图库 ---------- */
.gallery-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.gallery-item {
  position: relative; margin: 0; overflow: hidden; border-radius: 14px;
  background: #0d2032; cursor: zoom-in; box-shadow: 0 4px 14px rgba(13,32,50,.10);
  transition: transform .35s ease, box-shadow .35s ease;
}
.gallery-item:hover { transform: translateY(-4px); box-shadow: 0 14px 30px rgba(13,32,50,.18); }
.gallery-item img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  aspect-ratio: 4 / 3; transition: transform .5s ease;
}
.gallery-item:hover img { transform: scale(1.06); }
.gallery-item figcaption {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 30px 14px 12px;
  background: linear-gradient(180deg, transparent 0%, rgba(13,32,50,.85) 100%);
  color: #fff; font-size: 13px; font-weight: 600; letter-spacing: .5px;
  opacity: 0; transform: translateY(6px); transition: all .35s ease;
  pointer-events: none;
}
.gallery-item:hover figcaption { opacity: 1; transform: translateY(0); }

/* 首页实拍展示：杂志式拼贴（1 张 2x2 主图 + 1 张 2 列宽图 + 小图错落） */
.gallery-grid--home {
  grid-template-columns: repeat(4, 1fr); gap: 12px;
  grid-auto-rows: 170px; grid-auto-flow: dense;
}
.gallery-grid--home .gallery-item:nth-child(1) { grid-column: span 2; grid-row: span 2; }
.gallery-grid--home .gallery-item:nth-child(6) { grid-column: span 2; }
.gallery-grid--home .gallery-item img { aspect-ratio: auto; height: 100%; }
.gallery-grid--home .gallery-item figcaption { opacity: 1; transform: none; padding: 34px 16px 13px; font-size: 13.5px; }

/* 产品中心图库：田字格统一网格（电脑4列 / 平板3列 / 手机2列，1:1 方格） */
.gallery-groups { display: flex; flex-direction: column; gap: 52px; }
.gallery-group-title {
  display: flex; align-items: center; gap: 10px; margin: 0 0 16px;
  font-size: 20px; font-weight: 800; color: var(--ink); letter-spacing: -.3px;
}
.gallery-group-title::before {
  content: ""; width: 5px; height: 18px; border-radius: 3px; background: var(--grad-primary);
}
.gallery-group-title span { font-size: 12.5px; font-weight: 600; color: var(--muted); letter-spacing: .06em; }
.g-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.g-grid .gallery-item { margin: 0; }
.g-grid .gallery-item img { aspect-ratio: 1 / 1; height: auto; }
.g-grid .gallery-item figcaption { opacity: 1; transform: none; }

/* ---------- 案例卡片（首页） ---------- */
.case-card {
  position: relative; border-radius: var(--r-md); overflow: hidden; background: var(--green-900);
  aspect-ratio: 4/3; box-shadow: var(--shadow-sm); transition: transform .3s ease, box-shadow .3s ease;
  display: block;
}
.case-card:hover { color: #fff; }
.case-card img { width: 100%; height: 100%; object-fit: cover; opacity: .9; transition: transform .5s ease, opacity .3s ease; }
.case-card:hover img { transform: scale(1.08); opacity: 1; }
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.case-overlay {
  position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: flex-end;
  padding: 20px; background: linear-gradient(180deg, transparent 30%, rgba(11,42,70,.9) 100%);
}
.case-overlay .kind { font-size: 12px; color: var(--mint); font-weight: 700; letter-spacing: .06em; }
.case-overlay h3 { color: #fff; font-size: 19px; font-weight: 800; margin: 4px 0 6px; }
.case-overlay p { color: rgba(255,255,255,.8); font-size: 13px; }

/* ---------- 案例详情（内页） ---------- */
.case-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.case-detail {
  background: #fff; border: 1px solid var(--line-soft); border-radius: var(--r-lg); overflow: hidden;
  box-shadow: var(--shadow-sm); display: flex; flex-direction: column; transition: transform .3s ease, box-shadow .3s ease;
}
.case-detail:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: var(--green-100); }
.case-hero-media { aspect-ratio: 16/10; background: var(--green-50); overflow: hidden; }
.case-hero-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.case-detail:hover .case-hero-media img { transform: scale(1.05); }
.case-detail-body { padding: 24px 28px 28px; display: flex; flex-direction: column; flex: 1; }
.case-detail-body h2 { font-size: 23px; font-weight: 800; color: var(--ink); margin: 10px 0 12px; }
.case-lead { font-size: 14.5px; color: var(--text); margin-bottom: 16px; }
.case-meta {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px 20px;
  padding: 16px 0; border-top: 1px dashed var(--line); border-bottom: 1px dashed var(--line); margin-bottom: 16px;
}
.case-meta div b { display: block; font-size: 12px; color: var(--muted); font-weight: 700; letter-spacing: .02em; }
.case-meta div span { font-size: 14px; color: var(--text); font-weight: 600; }
.case-detail-body > p:last-child { font-size: 14px; color: var(--muted); line-height: 1.85; }

/* 内页 CTA 横条 */
.cta-line {
  display: flex; align-items: center; justify-content: center; gap: 24px; flex-wrap: wrap;
  padding: 32px 38px; border-radius: var(--r-lg); color: #fff;
  background: var(--grad-dark); box-shadow: var(--shadow-lg);
}
.cta-line span { font-size: 17px; font-weight: 600; }
.cta-line .btn:hover { color: #fff; }

/* ---------- 认证证书 ---------- */
.cert-card {
  background: #fff; border: 1px solid var(--line-soft); border-radius: var(--r-md); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: transform .3s ease, box-shadow .3s ease; text-align: center;
  display: flex; flex-direction: column;
}
.cert-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--green-100); }
.cert-media { aspect-ratio: 4/3; background: var(--green-50); display: grid; place-items: center; overflow: hidden; cursor: zoom-in; }
.cert-media img { width: 100%; height: 100%; object-fit: contain; padding: 14px; }
.cert-body { padding: 16px 18px 20px; }
.cert-card.tall .cert-body { text-align: left; flex: 1; }
.cert-body h4 { font-size: 16px; font-weight: 800; color: var(--ink); margin-bottom: 4px; }
.cert-body p { font-size: 12.5px; color: var(--muted); }

/* ---------- 新闻卡片（首页） ---------- */
.news-card {
  background: #fff; border: 1px solid var(--line-soft); border-radius: var(--r-md); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: transform .3s ease, box-shadow .3s ease; display: flex; flex-direction: column;
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.news-card:hover { color: inherit; }
.news-media { aspect-ratio: 16/9; overflow: hidden; background: var(--green-50); }
.news-media img { width: 100%; height: 100%; object-fit: cover; }
.news-body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.news-date { font-size: 12.5px; color: var(--green-600); font-weight: 700; }
.news-body h3 { font-size: 17px; font-weight: 800; color: var(--ink); margin: 8px 0 10px; line-height: 1.45; }
.news-body p { font-size: 13.5px; color: var(--muted); flex: 1; }

/* ---------- 新闻列表（内页） ---------- */
.news-list { display: flex; flex-direction: column; gap: 18px; }
.news-row {
  display: flex; gap: 22px; background: #fff; border: 1px solid var(--line-soft);
  border-radius: var(--r-md); padding: 18px; box-shadow: var(--shadow-sm);
  transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease;
}
.news-row:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--green-100); color: inherit; }
.news-row:hover h3 { color: var(--orange); }
.news-thumb { width: 210px; height: 132px; flex: none; border-radius: 12px; overflow: hidden; background: var(--green-50); }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.news-row:hover .news-thumb img { transform: scale(1.06); }
.news-main { flex: 1; min-width: 0; }
.news-top { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.news-tag { font-size: 12px; padding: 3px 11px; border-radius: 999px; background: var(--green-50); color: var(--green-600); font-weight: 700; }
.news-tag:first-child { background: var(--grad-primary); color: #fff; }
.news-date { font-size: 12.5px; color: var(--muted); }
.news-main h3 { font-size: 18px; font-weight: 800; color: var(--ink); margin-bottom: 6px; transition: color .18s ease; line-height: 1.4; }
.news-main p { font-size: 13.5px; color: var(--muted); line-height: 1.7; }

.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 48px; }
.pagination .filter-btn { min-width: 42px; }

/* ---------- 关于/图文 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split-media { position: relative; }
.split-media img { border-radius: var(--r-lg); box-shadow: var(--shadow-lg); width: 100%; height: 440px; object-fit: cover; }
.split-media .badge-float {
  position: absolute; left: -20px; bottom: 26px; background: #fff; border-radius: var(--r-md);
  padding: 16px 22px; box-shadow: var(--shadow-lg); display: flex; align-items: center; gap: 12px;
}
.badge-float b { font-size: 30px; color: var(--green-500); font-weight: 900; font-family: var(--font-serif); }
.badge-float span { font-size: 12.5px; color: var(--muted); }
.check-list { margin-top: 24px; display: grid; gap: 12px; }
.check-list li { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; color: var(--text); }
.check-list .ck { color: var(--green-500); font-weight: 800; flex: none; margin-top: 1px; }

/* ---------- 时间轴（发展历程） ---------- */
.timeline { position: relative; max-width: 800px; margin: 0 auto; padding-left: 8px; }
.timeline::before { content: ""; position: absolute; left: 128px; top: 10px; bottom: 10px; width: 2px; background: linear-gradient(180deg, var(--green-100), var(--green-400)); }
.timeline-item { position: relative; padding-left: 172px; margin-bottom: 34px; }
.timeline-dot { position: absolute; left: 120px; top: 7px; width: 18px; height: 18px; border-radius: 50%; background: #fff; border: 4px solid var(--green-500); box-shadow: 0 0 0 6px var(--green-50); }
.timeline-year { position: absolute; left: 0; top: 0; font-family: var(--font-serif); font-size: 26px; font-weight: 700; color: var(--green-500); letter-spacing: .5px; }
.timeline-body h3 { font-size: 18px; font-weight: 800; color: var(--ink); }
.timeline-body p { font-size: 14px; color: var(--muted); margin-top: 4px; }

/* ---------- 联系我们 ---------- */
.contact-layout { display: grid; grid-template-columns: 1fr 1.25fr; gap: 40px; align-items: start; }
.contact-info { display: flex; flex-direction: column; }
.contact-item { display: flex; gap: 16px; padding: 18px 0; border-bottom: 1px dashed var(--line); }
.contact-item:first-child { padding-top: 0; }
.contact-icon {
  width: 46px; height: 46px; border-radius: 12px; background: var(--green-50); color: var(--green-500);
  display: grid; place-items: center; font-size: 20px; flex: none;
}
.contact-item h4 { font-size: 15px; color: var(--ink); font-weight: 800; }
.contact-item p { font-size: 14px; color: var(--muted); margin-top: 3px; }
.contact-item p a { color: var(--green-600); font-weight: 600; }
.contact-item p a:hover { color: var(--orange); }

.contact-form-wrap {
  background: #fff; border: 1px solid var(--line-soft); border-radius: var(--r-lg);
  padding: 36px 32px; box-shadow: var(--shadow-md); border-top: 4px solid var(--green-500);
}
.contact-form-wrap h3 { font-size: 22px; font-weight: 800; color: var(--ink); }
.form-row { margin-bottom: 16px; }
.form-row label { display: block; font-size: 13.5px; font-weight: 700; color: var(--ink); margin-bottom: 6px; }
.form-row label em { color: #e05b5b; font-style: normal; }
.form-row input, .form-row select, .form-row textarea {
  width: 100%; padding: 12px 14px; border: 1.5px solid var(--line); border-radius: 10px;
  font-family: inherit; font-size: 14.5px; color: var(--text); background: #fff;
  transition: border-color .2s, box-shadow .2s;
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  outline: none; border-color: var(--green-500); box-shadow: 0 0 0 4px rgba(0,104,168,.12);
}
.form-row textarea { resize: vertical; min-height: 112px; }
.form-tip { font-size: 12px; color: var(--muted); margin-top: 14px; text-align: center; }

/* 地图 */
.map-wrap { border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--shadow-md); }
.map-placeholder {
  background: linear-gradient(160deg, #eef3f8 0%, #dce5ee 100%);
  min-height: 320px; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 14px; text-align: center; padding: 40px;
}
.map-placeholder span { font-size: 44px; }
.map-placeholder p { color: var(--muted); font-size: 15px; max-width: 460px; }

/* ---------- CTA 横幅 ---------- */
.cta-band { background: var(--grad-primary); border-radius: var(--r-xl); padding: 52px 56px; display: flex; align-items: center; justify-content: space-between; gap: 30px; color: #fff; flex-wrap: wrap; box-shadow: var(--shadow-lg); }
.cta-band h2 { font-size: 30px; font-weight: 900; letter-spacing: -.5px; }
.cta-band p { color: rgba(255,255,255,.9); margin-top: 8px; font-size: 15.5px; }
.cta-band .btn:hover { color: #fff; }

/* ---------- 页头横幅（内页） ---------- */
.page-hero { position: relative; background: var(--grad-dark); color: #fff; padding: 64px 0 56px; overflow: hidden; }
.page-hero::before { content: ""; position: absolute; right: -120px; top: -120px; width: 420px; height: 420px; border-radius: 50%; background: radial-gradient(circle, rgba(185,217,240,.18), transparent 62%); }
.page-hero::after { content: ""; position: absolute; left: -80px; bottom: -180px; width: 460px; height: 460px; border-radius: 50%; background: radial-gradient(circle, rgba(54,143,196,.22), transparent 60%); }
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { font-size: 38px; font-weight: 900; letter-spacing: -.5px; }
.page-hero p { color: rgba(255,255,255,.85); margin-top: 10px; font-size: 16px; max-width: 720px; }
.crumb { font-size: 13px; color: rgba(255,255,255,.72); margin-top: 16px; display: flex; align-items: center; flex-wrap: wrap; }
.crumb a { color: rgba(255,255,255,.85); }
.crumb a:hover { color: var(--mint); }
.crumb .sep { margin: 0 8px; opacity: .5; }

/* ---------- 页脚 ---------- */
.footer { background: var(--green-600); color: rgba(255,255,255,.86); padding: 56px 0 0; }
.footer-contactbar {
  display: flex; flex-wrap: wrap; align-items: stretch;
  border-bottom: 1px solid rgba(255,255,255,.2); padding-bottom: 28px; margin-bottom: 36px;
}
.footer-citem { flex: 1 1 220px; display: flex; gap: 14px; align-items: center; padding: 4px 28px; border-right: 1px solid rgba(255,255,255,.18); }
.footer-citem:first-child { padding-left: 0; }
.footer-citem:last-child { border-right: none; padding-right: 0; }
.footer-cicon {
  width: 46px; height: 46px; border-radius: 12px; flex: none;
  background: rgba(255,255,255,.16); display: grid; place-items: center; font-size: 20px; color: #fff;
}
.footer-citem b { color: #fff; font-size: 14px; font-weight: 800; display: block; line-height: 1.4; }
.footer-citem span, .footer-citem a { color: rgba(255,255,255,.84); font-size: 13px; line-height: 1.5; display: block; }
.footer-citem a:hover { color: #fff; text-decoration: underline; }

.footer-grid { display: grid; grid-template-columns: 1.7fr 1fr 1fr; gap: 40px; padding-bottom: 44px; }
.footer-brand .brand-name { color: #fff; }
.footer-brand .brand-sub { color: rgba(255,255,255,.6); }
.footer-about { font-size: 13.5px; margin-top: 16px; max-width: 320px; line-height: 1.9; color: rgba(255,255,255,.72); }
.footer h4 { color: #fff; font-size: 15px; font-weight: 800; margin-bottom: 18px; }
.footer-links li { margin-bottom: 11px; }
.footer-links a { font-size: 13.5px; color: rgba(255,255,255,.72); transition: color .2s, padding .2s; }
.footer-links a:hover { color: #fff; padding-left: 4px; text-decoration: underline; }

.footer-bottom { border-top: 1px solid rgba(255,255,255,.18); padding: 20px 0; font-size: 12.5px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; color: rgba(255,255,255,.62); }
.footer-bottom a { color: rgba(255,255,255,.82); }
.footer-bottom a:hover { color: #fff; }

/* ---------- 灯箱 ---------- */
.lightbox { position: fixed; inset: 0; z-index: 200; background: rgba(11,30,46,.92); display: none; place-items: center; padding: 40px; }
.lightbox.show { display: grid; }
.lightbox img { max-width: 100%; max-height: 86vh; border-radius: 10px; box-shadow: var(--shadow-lg); }
.lightbox-close { position: absolute; top: 22px; right: 26px; width: 46px; height: 46px; border-radius: 50%; background: rgba(255,255,255,.14); color: #fff; font-size: 24px; }
.lightbox-close:hover { background: rgba(255,255,255,.26); color: #fff; }

/* ---------- 动画 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; } .reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; } .reveal.d4 { transition-delay: .32s; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .split { grid-template-columns: 1fr; gap: 36px; }
  .split-media img { height: 320px; }
  .hero h1 { font-size: 42px; }
  .case-detail-grid { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .header-search { max-width: 300px; }
  .gallery-grid--home { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 150px; }
  .gallery-groups { gap: 40px; }
  .g-grid { grid-template-columns: repeat(3, 1fr); gap: 12px; }
}
@media (max-width: 820px) {
  .nav-inner { display: none; }          /* 隐藏桌面导航 */
  .header-search, .header-tel { display: none; }
  .hamburger { display: grid; }
  .header-inner { height: 78px; justify-content: space-between; }
  .hero h1 { font-size: 34px; }
  .section-title { font-size: 28px; }
  .section { padding: 60px 0; }
  .cta-band { padding: 36px 28px; }
  .cta-line { padding: 26px 24px; }
  .topbar .hide-m { display: none; }
  .news-row { flex-direction: column; }
  .news-thumb { width: 100%; height: 180px; }
  .timeline-item { padding-left: 0; padding-top: 54px; }
  .timeline::before { left: 8px; }
  .timeline-dot { left: 0; }
  .timeline-year { left: 26px; }
}
@media (max-width: 560px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .hero-metrics { gap: 20px; }
  .metric b { font-size: 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 29px; }
  .brand-name { font-size: 18px; }
  .case-meta { grid-template-columns: 1fr; }
  .topbar-welcome { display: none; }
  .topbar-inner { justify-content: flex-end; }
  .gallery-grid--home { grid-auto-rows: 112px; gap: 8px; }
  .gallery-groups { gap: 32px; }
  .g-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .gallery-group-title { font-size: 18px; }
}