/* ==========================================================================
   索匀科技 企业官网 — 共享设计令牌与组件样式
   唯一 Token 来源；各页面仅引用本文件
   ========================================================================== */

:root {
  color-scheme: light;
  /* 品牌色 */
  --color-primary: #123a7c;
  --color-primary-deep: #0b2552;
  --color-primary-soft: #e8effa;
  --color-accent: #18a0e0;
  --color-highlight: #2f6bff;
  --color-success: #1f9d62;
  /* 中性色 */
  --color-background: #f5f7fa;
  --color-surface: #ffffff;
  --color-text: #172033;
  --color-muted-text: #5b6577;
  --color-border: #dde3ec;
  --color-focus: #0b66ff;
  /* 字体 */
  --font-body: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", ui-sans-serif, system-ui, sans-serif;
  --font-display: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", ui-sans-serif, system-ui, sans-serif;
  /* 圆角与间距 */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --space-unit: 0.25rem;
  --content-width: 76rem;
  --shadow-card: 0 1px 2px rgba(16, 42, 88, 0.06), 0 8px 24px rgba(16, 42, 88, 0.06);
  --shadow-lift: 0 4px 10px rgba(16, 42, 88, 0.08), 0 18px 40px rgba(16, 42, 88, 0.12);
}

* { box-sizing: border-box; }

html {
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-body);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100dvh;
  line-height: 1.7;
  font-size: 1rem;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--color-primary-deep);
  line-height: 1.3;
  margin: 0 0 0.6em;
  font-weight: 700;
}

p { margin: 0 0 1em; }

a { color: var(--color-highlight); text-decoration: none; }
a:hover { text-decoration: underline; }

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

button, input, select, textarea { font: inherit; }

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

.skip-link {
  left: 1rem; position: fixed; top: 1rem;
  transform: translateY(-220%);
  z-index: 200; background: var(--color-primary-deep); color: #fff;
  padding: 0.6rem 1rem; border-radius: var(--radius-sm);
}
.skip-link:focus { transform: translateY(0); }

.container {
  width: 100%; max-width: var(--content-width);
  margin: 0 auto; padding: 0 1.5rem;
}

/* ============================== 顶部导航 ============================== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 4px 24px rgba(16, 24, 48, 0.08);
}
.nav-bar {
  display: flex; align-items: center; justify-content: space-between;
  height: 4.25rem; gap: 1rem;
}
.brand {
  display: flex; align-items: center; gap: 0.65rem;
  font-weight: 800; color: var(--color-primary-deep);
  font-size: 1.15rem; letter-spacing: 0.02em; white-space: nowrap;
}
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 2.1rem; height: 2.1rem; flex: none;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: 0.55rem; color: #fff;
}
/* 图片 logo：用于导航栏（白底） */
.brand-logo { height: 2.6rem; width: auto; flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text small { display: block; font-size: 0.62rem; font-weight: 600; color: var(--color-muted-text); letter-spacing: 0.18em; margin-top: 2px; }

.nav-links {
  display: flex; align-items: center; gap: 0.25rem; list-style: none; margin: 0; padding: 0;
}
.nav-links a {
  display: block; padding: 0.55rem 0.9rem; border-radius: var(--radius-sm);
  color: var(--color-text); font-weight: 500; font-size: 0.96rem;
}
.nav-links a:hover { background: var(--color-primary-soft); color: var(--color-primary); text-decoration: none; }
.nav-links a[aria-current="page"] {
  color: var(--color-primary); background: var(--color-primary-soft); font-weight: 700;
}
.nav-cta {
  background: var(--color-primary); color: #fff !important;
  border-radius: var(--radius-sm); padding: 0.55rem 1.1rem !important;
}
.nav-cta:hover { background: var(--color-primary-deep); }

.nav-toggle {
  display: none; background: none; border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); padding: 0.5rem 0.7rem; cursor: pointer;
  color: var(--color-primary-deep);
}
.nav-toggle .bar { display: block; width: 1.4rem; height: 2px; background: currentColor; margin: 4px 0; border-radius: 2px; }

/* ============================== 按钮 ============================== */
.btn {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.75rem 1.5rem; border-radius: var(--radius-md);
  font-weight: 600; font-size: 1rem; cursor: pointer;
  border: 1px solid transparent; transition: transform 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn-primary { background: var(--color-accent); color: #fff; }
.btn-primary:hover { background: #1290cc; box-shadow: var(--shadow-lift); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,0.55); }
.btn-ghost:hover { background: rgba(255,255,255,0.12); }
.btn-outline { background: #fff; color: var(--color-primary); border-color: var(--color-primary); }
.btn-outline:hover { background: var(--color-primary-soft); }

/* ============================== 区块通用 ============================== */
.section { padding: 4.5rem 0; }
.section.alt { background: var(--color-surface); }
.section.tinted { background: var(--color-primary-soft); }
.section-head { max-width: 46rem; margin-bottom: 2.5rem; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow {
  display: inline-block; font-size: 0.82rem; font-weight: 700; letter-spacing: 0.12em;
  color: var(--color-accent); text-transform: uppercase; margin-bottom: 0.6rem;
}
.section-head h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 0.5rem; }
.section-head p { color: var(--color-muted-text); font-size: 1.05rem; }

.grid { display: grid; gap: 1.5rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 1.75rem;
  box-shadow: var(--shadow-card); transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lift); }
.card h3 { font-size: 1.15rem; margin-bottom: 0.5rem; }
.card p { color: var(--color-muted-text); margin-bottom: 0; font-size: 0.95rem; }
.card .icon {
  width: 3rem; height: 3rem; border-radius: var(--radius-md);
  display: grid; place-items: center; margin-bottom: 1rem;
  background: var(--color-primary-soft); color: var(--color-primary);
}
.card-link { font-weight: 600; font-size: 0.92rem; display: inline-block; margin-top: 0.8rem; }

/* ============================== Hero ============================== */
.hero {
  position: relative; color: #fff; overflow: hidden;
  background: linear-gradient(135deg, var(--color-primary-deep) 0%, var(--color-primary) 55%, #14509b 100%);
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 12% 22%, rgba(24,160,224,0.35) 0, transparent 26%),
    radial-gradient(circle at 86% 12%, rgba(47,107,255,0.28) 0, transparent 30%),
    radial-gradient(circle at 78% 86%, rgba(24,160,224,0.22) 0, transparent 32%);
}
.hero .container { position: relative; z-index: 1; }
.hero-inner { padding: 5.5rem 0 5rem; max-width: 44rem; }
.hero h1 { color: #fff; font-size: clamp(2rem, 4.6vw, 3.1rem); margin-bottom: 1.1rem; letter-spacing: 0.01em; }
.hero p.lead { font-size: 1.18rem; color: rgba(255,255,255,0.88); margin-bottom: 2rem; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-badges { display: flex; gap: 1.5rem; flex-wrap: wrap; margin-top: 2.5rem; }
.hero-badges span { font-size: 0.9rem; color: rgba(255,255,255,0.85); display: flex; align-items: center; gap: 0.45rem; }
.hero-badges .dot { width: 0.5rem; height: 0.5rem; border-radius: 50%; background: var(--color-accent); box-shadow: 0 0 0 4px rgba(24,160,224,0.25); }

/* 子页顶部条 */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary-deep), var(--color-primary));
  color: #fff; padding: 3.5rem 0; position: relative; overflow: hidden;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(circle at 88% 20%, rgba(24,160,224,0.3) 0, transparent 32%);
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { color: #fff; font-size: clamp(1.8rem, 3.6vw, 2.6rem); margin-bottom: 0.4rem; }
.page-hero p { color: rgba(255,255,255,0.85); max-width: 40rem; margin: 0; }
.crumb { font-size: 0.88rem; color: rgba(255,255,255,0.7); margin-bottom: 0.8rem; }
.crumb a { color: rgba(255,255,255,0.85); }

/* ============================== 数据统计 ============================== */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.stat { text-align: center; padding: 1rem 0.5rem; }
.stat .num { font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 800; color: var(--color-primary); line-height: 1; }
.stat .num em { font-style: normal; color: var(--color-accent); }
.stat .label { color: var(--color-muted-text); margin-top: 0.5rem; font-size: 0.95rem; }

/* ============================== 厂商标识墙 ============================== */
.logo-wall { display: grid; grid-template-columns: repeat(6, 1fr); gap: 1rem; }
.logo-tile {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0;
  background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md);
  padding: 0.5rem; min-height: 5.5rem; text-align: center;
  color: var(--color-primary-deep); transition: all 0.16s ease;
}
.logo-tile:hover { border-color: var(--color-accent); box-shadow: var(--shadow-card); transform: translateY(-3px); text-decoration: none; }
.logo-tile .lname { font-weight: 800; font-size: 1.05rem; letter-spacing: 0.02em; }
.logo-tile .lcname { font-size: 0.78rem; color: var(--color-muted-text); }
.logo-tile .ltag { font-size: 0.68rem; color: var(--color-accent); font-weight: 700; }
/* 图片 logo 模式：用于厂商墙 —— 图片几乎铺满整个框 */
.logo-tile img { display: block; width: 100%; height: auto; max-height: 100%; object-fit: contain; mix-blend-mode: multiply; }
.logo-marquee { overflow: hidden; position: relative; }
.logo-marquee .track { display: flex; width: max-content; animation: marquee 36s linear infinite; }
.logo-marquee:hover .track { animation-play-state: paused; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
/* 首页轮播：图片 logo 两行反向 */
.mq-row { margin: 0 -0.6rem; padding: 0 0.6rem; }
.mq-row + .mq-row { margin-top: 1rem; }
.logo-marquee .mq-group { display: flex; gap: 1rem; padding-right: 1rem; flex: 0 0 auto; }
.logo-tile.logo-mq {
  width: 11rem; height: 5.25rem; padding: 0.7rem 1rem; flex: 0 0 auto;
  display: flex; align-items: center; justify-content: center;
}
.logo-tile.logo-mq img { width: auto; max-width: 100%; height: auto; max-height: 3.4rem; object-fit: contain; mix-blend-mode: multiply; }
.logo-marquee.reverse .track { animation-name: marquee-rev; }
@keyframes marquee-rev { from { transform: translateX(-50%); } to { transform: translateX(0); } }
.logo-tile.logo-mq.logo-featured img { max-height: 5.2rem; }
@media (max-width: 768px) {
  .logo-tile.logo-mq { width: 8rem; height: 4.25rem; padding: 0.5rem 0.7rem; }
  .logo-tile.logo-mq img { max-height: 2.6rem; }
  .logo-tile.logo-mq.logo-featured img { max-height: 3.6rem; }
}
.logo-tile.logo-sm img { max-height: 3.2rem !important; }

/* ============================== 产品 / 服务 ============================== */
.svc-list { list-style: none; margin: 0; padding: 0; }
.svc-list li { padding: 0.5rem 0 0.5rem 1.7rem; position: relative; color: var(--color-muted-text); }
.svc-list li::before {
  content: ""; position: absolute; left: 0; top: 0.85rem;
  width: 0.7rem; height: 0.7rem; border-radius: 2px;
  background: var(--color-accent); transform: rotate(45deg);
}
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
.split img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lift); width: 100%; object-fit: cover; }

/* ============================== 案例 ============================== */
.case-card { display: flex; flex-direction: column; overflow:: hidden; padding: 0; }
.case-card .case-body { padding: 1.5rem 1.75rem 1.75rem; }
.case-tag {
  display: inline-block; font-size: 0.78rem; font-weight: 700; color: var(--color-primary);
  background: var(--color-primary-soft); border-radius: 999px; padding: 0.2rem 0.8rem; margin-bottom: 0.8rem;
}
.case-card h3 { font-size: 1.12rem; }
.case-meta { font-size: 0.85rem; color: var(--color-muted-text); margin-top: 0.9rem; padding-top: 0.9rem; border-top: 1px dashed var(--color-border); }
/* 案例配图 */
.case-photo { width: 100%; height: 12rem; object-fit: cover; display: block; }
.case-photo-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.75rem; margin: 1rem 0; }
.case-photo-gallery img { width: 100%; height: 7.5rem; object-fit: cover; border-radius: var(--radius-sm); }
.case-feature { display: grid; grid-template-columns: 1fr 1fr; gap: 0; overflow: hidden; padding: 0; }
.case-feature .cf-photo { width: 100%; height: 100%; min-height: 16rem; object-fit: cover; }
.case-feature .cf-body { padding: 2rem 2.25rem; }
.case-points { list-style: none; margin: 1rem 0 0; padding: 0; }
.case-points li { position: relative; padding-left: 1.5rem; margin-bottom: 0.55rem; font-size: 0.92rem; color: var(--color-ink); line-height: 1.55; }
.case-points li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--color-primary); font-weight: 800; }
/* 成效数据条 */
.case-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin: 1.5rem 0; }
.case-stat { text-align: center; background: var(--color-primary-soft); border-radius: var(--radius-md); padding: 1.25rem 0.5rem; }
.case-stat .num { font-size: 1.9rem; font-weight: 800; color: var(--color-primary-deep); line-height: 1; }
.case-stat .lbl { font-size: 0.82rem; color: var(--color-muted-text); margin-top: 0.4rem; }
/* 案例分类 */
.cat-nav { display: flex; flex-wrap: wrap; gap: 0.6rem; justify-content: center; margin: 1.5rem 0 0; }
.cat-nav a { font-size: 0.88rem; font-weight: 600; color: var(--color-primary); background: var(--color-primary-soft); border-radius: 999px; padding: 0.45rem 1.1rem; transition: var(--transition); }
.cat-nav a:hover { background: var(--color-primary); color: #fff; }
.cat-title { display: flex; align-items: center; gap: 0.9rem; margin-bottom: 1.75rem; }
.cat-title h2 { margin: 0; font-size: 1.5rem; }
.cat-title .cat-no { font-size: 0.95rem; font-weight: 800; color: #fff; background: var(--color-primary); width: 2.1rem; height: 2.1rem; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; flex: 0 0 auto; }
.cat-title .cat-line { flex: 1; height: 1px; background: var(--color-border); }
.cat-title .cat-count { font-size: 0.85rem; color: var(--color-muted-text); }

/* 时间线 */
.timeline { list-style: none; margin: 0; padding: 0; position: relative; }
.timeline::before { content: ""; position: absolute; left: 0.55rem; top: 0.4rem; bottom: 0.4rem; width: 2px; background: var(--color-border); }
.timeline li { position: relative; padding: 0 0 1.8rem 2.2rem; }
.timeline li::before {
  content: ""; position: absolute; left: 0; top: 0.35rem; width: 1.15rem; height: 1.15rem;
  border-radius: 50%; background: #fff; border: 3px solid var(--color-accent);
}
.timeline .year { font-weight: 800; color: var(--color-primary); font-size: 1.05rem; }
.timeline p { color: var(--color-muted-text); margin: 0.2rem 0 0; font-size: 0.95rem; }

/* ============================== 照片墙 ============================== */
.photo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.photo {
  position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-card);
  aspect-ratio: 3 / 2.2;
}
.photo img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.35s ease; }
.photo:hover img { transform: scale(1.05); }
.photo figcaption {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 1.6rem 1rem 0.8rem;
  background: linear-gradient(transparent, rgba(11,37,82,0.82)); color: #fff; font-size: 0.9rem; font-weight: 600;
}

/* ============================== 资质徽章 ============================== */
.badge-row { display: flex; flex-wrap: wrap; gap: 0.8rem; }
.badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: 999px; padding: 0.5rem 1.1rem; font-size: 0.9rem; font-weight: 600;
  color: var(--color-primary-deep);
}
.badge .b-dot { width: 0.55rem; height: 0.55rem; border-radius: 50%; background: var(--color-success); }

/* ============================== 表单 / 联系 ============================== */
.form-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 3rem; }
.field { margin-bottom: 1.1rem; }
.field label { display: block; font-weight: 600; font-size: 0.92rem; margin-bottom: 0.35rem; }
.field input, .field textarea, .field select {
  width: 100%; padding: 0.7rem 0.9rem; border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); background: #fff; color: var(--color-text);
}
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--color-accent); outline: none; }
.contact-item { display: flex; gap: 0.9rem; margin-bottom: 1.4rem; }
.contact-item .icon { flex: none; width: 2.6rem; height: 2.6rem; border-radius: var(--radius-md); background: var(--color-primary-soft); color: var(--color-primary); display: grid; place-items: center; }
.contact-item .k { font-size: 0.82rem; color: var(--color-muted-text); }
.contact-item .v { font-weight: 600; color: var(--color-primary-deep); }

.job { border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 1.25rem 1.5rem; background: var(--color-surface); margin-bottom: 1rem; display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.job h3 { font-size: 1.05rem; margin-bottom: 0.25rem; }
.job .meta { font-size: 0.85rem; color: var(--color-muted-text); }

/* ============================== CTA ============================== */
.cta-band {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff; border-radius: var(--radius-lg); padding: 3rem; text-align: center;
}
.cta-band h2 { color: #fff; font-size: clamp(1.5rem, 3vw, 2.1rem); }
.cta-band p { color: rgba(255,255,255,0.9); max-width: 38rem; margin: 0 auto 1.8rem; }

/* ============================== 页脚 ============================== */
.site-footer { background: var(--color-primary-deep); color: rgba(255,255,255,0.75); padding: 3.5rem 0 1.5rem; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr auto; gap: 2.5rem; margin-bottom: 2.5rem; }
.footer-qr { text-align: left; }
.footer-qr img { width: 80px; height: 80px; object-fit: cover; border-radius: 6px; border: 2px solid rgba(255,255,255,0.15); }
.footer-qr p { font-size: 0.78rem; color: rgba(255,255,255,0.6); margin-top: 0.5rem; }
.site-footer h4 { color: #fff; font-size: 1rem; margin-bottom: 1rem; }
.site-footer a { color: rgba(255,255,255,0.75); display: block; padding: 0.25rem 0; font-size: 0.92rem; }
.site-footer a:hover { color: #fff; text-decoration: none; }
.site-footer .brand { color: #fff; margin-bottom: 1rem; }
.site-footer .brand small { color: rgba(255,255,255,0.6); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.12); padding-top: 1.5rem; font-size: 0.85rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem; }

/* ============================== 资质翻页 ============================== */
.cert-pager { position: relative; }
.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}
.cert-item {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  aspect-ratio: 4 / 3;
  transition: box-shadow 0.2s, border-color 0.2s;
}
.cert-item img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 4px;
  cursor: zoom-in;
}
.cert-item:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 16px rgba(14,66,135,0.12);
}
.cert-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  margin-top: 0.5rem;
}
.cert-nav button {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.45rem 1.1rem;
  font-size: 0.88rem;
  color: var(--color-muted-text);
  cursor: pointer;
  transition: all 0.2s;
}
.cert-nav button:hover:not(:disabled) {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-bg);
}
.cert-nav button:disabled {
  opacity: 0.35;
  cursor: default;
}
.cert-dots {
  display: flex;
  gap: 0.45rem;
  align-items: center;
}
.cert-dots .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-border);
  cursor: pointer;
  transition: all 0.25s;
}
.cert-dots .dot.active {
  background: var(--color-primary);
  width: 20px;
  border-radius: 4px;
}
@media (max-width: 720px) {
  .cert-grid { grid-template-columns: repeat(2, 1fr); gap: 0.75rem; }
  .vendor-cert-grid { grid-template-columns: 1fr !important; }
}

/* ============================== 灯箱 ============================== */
.lightbox-overlay {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(0,0,0,0.85);
  display: none; align-items: center; justify-content: center;
  cursor: zoom-out;
}
.lightbox-overlay.active { display: flex; }
.lightbox-overlay img {
  max-width: 90vw; max-height: 90vh; object-fit: contain;
  border-radius: 8px; box-shadow: 0 8px 40px rgba(0,0,0,0.5);
}
.lightbox-close {
  position: fixed; top: 1rem; right: 1.5rem; z-index: 10000;
  color: #fff; font-size: 2rem; cursor: pointer;
  background: none; border: none; line-height: 1;
}

/* ============================== 品牌详情页 ============================== */
.vendor-hero { display: grid; grid-template-columns: 1.3fr 0.7fr; gap: 3rem; align-items: center; }
.vendor-logo-box {
  background: #fff; border-radius: var(--radius-lg); padding: 3rem 2rem; text-align: center; box-shadow: var(--shadow-lift);
}
.vendor-logo-box .vname { font-size: 2.2rem; font-weight: 800; color: var(--color-primary-deep); letter-spacing: 0.02em; }
.vendor-logo-box .vcname { color: var(--color-muted-text); margin-top: 0.3rem; font-size: 1.05rem; }
.cert-card { border-left: 4px solid var(--color-accent); }
.prod-chip { display: inline-block; flex:1; min-width:120px; text-align:center; background: var(--color-primary-soft); color: var(--color-primary); border-radius: var(--radius-sm); padding: 0.4rem 0.9rem; font-size: 0.88rem; font-weight: 600; margin: 0; }

/* ============================== 响应式 ============================== */
@media (max-width: 960px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .logo-wall { grid-template-columns: repeat(4, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .split, .form-grid, .vendor-hero { grid-template-columns: 1fr; gap: 2rem; }
  .case-feature { grid-template-columns: 1fr; }
  .case-feature .cf-photo { min-height: 14rem; height: 14rem; }
  .case-stats { grid-template-columns: repeat(3, 1fr); gap: 0.5rem; }
  .case-stat .num { font-size: 1.4rem; }
  .case-photo-gallery { grid-template-columns: repeat(3, 1fr); gap: 0.5rem; }
  .case-photo-gallery img { height: 5rem; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .photo-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute; top: 4.25rem; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--color-border);
    padding: 0.5rem 1rem 1rem; display: none; box-shadow: var(--shadow-lift);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.8rem 0.9rem; }
  .section { padding: 3rem 0; }
  .hero-inner { padding: 3.5rem 0 3.5rem; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .logo-wall { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 1.8rem; }
  .photo-grid { grid-template-columns: 1fr; }
  .cta-band { padding: 2rem 1.25rem; }
}

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


/* 滚动渐入效果（scroll reveal） */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
  will-change: opacity, transform;
}
.reveal.in-view {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ===== 团队风采图片轮播 ===== */
.gallery-carousel{position:relative;max-width:1100px;margin:0 auto;overflow:hidden;border-radius:14px;box-shadow:0 12px 32px rgba(10,30,60,.10);}
.gallery-track{display:flex;transition:transform 1s cubic-bezier(.22,.61,.36,1);will-change:transform;}
.gallery-slide{flex:0 0 100%;position:relative;height:240px;overflow:hidden;background:#eef2f7;}
.gallery-slide img{width:100%;height:100%;object-fit:contain;display:block;}
.gallery-nav{position:absolute;top:50%;transform:translateY(-50%);z-index:5;width:44px;height:44px;border:none;border-radius:50%;background:rgba(255,255,255,.92);color:#123a63;font-size:24px;line-height:1;cursor:pointer;box-shadow:0 4px 12px rgba(10,30,60,.18);transition:background .2s,color .2s;display:flex;align-items:center;justify-content:center;}
.gallery-nav:hover{background:#123a63;color:#fff;}
.gallery-nav.prev{left:16px;}
.gallery-nav.next{right:16px;}
.gallery-dots{position:absolute;bottom:14px;left:0;right:0;display:flex;justify-content:center;gap:8px;z-index:5;}
.gallery-dots button{width:9px;height:9px;border:none;border-radius:50%;background:rgba(255,255,255,.6);cursor:pointer;padding:0;transition:background .25s,width .25s;}
.gallery-dots button.active{background:#fff;width:22px;border-radius:5px;}
@media (max-width:767px){.gallery-slide{height:180px;}}
@media (min-width:768px){.gallery-slide{flex-basis:33.3333%;height:220px;}}
@media (min-width:1200px){.gallery-slide{flex-basis:25%;}}