/* ============================================================
   联琪管业 - 企业官网全局样式
   风格：简约大气 / 工业科技蓝
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
  --primary: #0d4b8c;
  --primary-dark: #0a3a6b;
  --primary-light: #1a6fc4;
  --accent: #0099d4;
  --accent-light: #e0f4fb;
  --dark: #0a1929;
  --dark-2: #152238;
  --text: #2d3748;
  --text-light: #718096;
  --text-white: #ffffff;
  --bg-light: #f0f4f8;
  --bg-gray: #f7f9fc;
  --white: #ffffff;
  --border: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,.1);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.12);
  --radius: 8px;
  --radius-lg: 16px;
  --max-width: 1200px;
  --header-h: 72px;
  --font-sans: "PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --transition: .3s cubic-bezier(.4,0,.2,1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { border: none; cursor: pointer; font-family: inherit; }

/* ---------- Utility ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.section { padding: 80px 0; }
.section-sm { padding: 56px 0; }
.section-title {
  text-align: center;
  margin-bottom: 12px;
}
.section-title h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--dark);
  letter-spacing: 2px;
}
.section-title .en {
  font-size: .8rem;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-top: 6px;
  display: block;
}
.section-title .line {
  width: 48px;
  height: 3px;
  background: var(--accent);
  margin: 16px auto 0;
  border-radius: 2px;
}
.section-desc {
  text-align: center;
  color: var(--text-light);
  max-width: 680px;
  margin: 16px auto 0;
  font-size: .95rem;
}
.bg-light { background: var(--bg-light); }
.bg-gray { background: var(--bg-gray); }
.bg-dark { background: var(--dark); color: var(--text-white); }
.text-center { text-align: center; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 32px;
  font-size: .9rem;
  font-weight: 500;
  border-radius: var(--radius);
  transition: all var(--transition);
  letter-spacing: 1px;
}
.btn-primary {
  background: var(--accent);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,153,212,.35);
}
.btn-outline {
  border: 2px solid var(--white);
  color: var(--white);
  background: transparent;
}
.btn-outline:hover {
  background: var(--white);
  color: var(--primary);
}
.btn-dark {
  background: var(--dark);
  color: var(--white);
}
.btn-dark:hover {
  background: var(--primary);
  transform: translateY(-2px);
}
.btn-ghost {
  border: 2px solid var(--border);
  color: var(--text);
  background: var(--white);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ============================================================
   Company Stats (公司实力统计)
   ============================================================ */
.company-stats {
  background: linear-gradient(135deg, #0a1929 0%, #0d4b8c 100%);
  color: var(--white);
  padding: 0;
  position: relative;
  overflow: hidden;
}
.company-stats::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(0,153,212,.18), transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(13,75,140,.2), transparent 50%);
  pointer-events: none;
  z-index: 0;
}
/* 上半部分：图片走马灯（200px 高，复用 .banner-marquee 全部动画样式） */
.stats-marquee {
  position: relative;
  height: 200px;
  overflow: hidden;
  z-index: 1;
}
.stats-marquee .banner-marquee {
  height: 100%;
  width: 100%;
  border-radius: 0;
}
/* stats 区域的走马灯图片略小一些，与 200px 高度协调 */
.stats-marquee .banner-marquee-track { gap: 24px; padding: 0 20px; }
.stats-marquee .banner-marquee-track img {
  width: 116px;
  height: 116px;
  border-width: 2px;
}
/* 中间细分割线（上下两部分视觉分隔） */
.stats-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,.18) 50%, transparent 100%);
  max-width: 92%;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.stats-grid {
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: 24px;
  position: relative;
  z-index: 1;
  flex-wrap: wrap;
}
.stat-item {
  text-align: center;
  flex: 1;
  min-width: 180px;
  padding: 12px 16px;
}
.stat-num {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(135deg, #fff 0%, #4fc3f7 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.stat-num .plus {
  font-size: 1.6rem;
  margin-left: 2px;
  background: linear-gradient(135deg, #ff9966, var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-label {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 2px;
  margin-bottom: 4px;
}
.stat-desc {
  font-size: .8rem;
  color: rgba(255,255,255,.55);
  letter-spacing: 1px;
}
.stat-divider {
  width: 1px;
  height: 56px;
  background: linear-gradient(to bottom, transparent, rgba(255,255,255,.25), transparent);
  flex-shrink: 0;
}

/* 下半部分：数字整体缩小版（与上半走马灯形成视觉对比） */
.stats-grid-sm {
  padding: 30px 0 38px;
  gap: 16px;
}
.stats-grid-sm .stat-item {
  min-width: 150px;
  padding: 6px 14px;
}
.stats-grid-sm .stat-num {
  font-size: 2rem;
  margin-bottom: 6px;
  letter-spacing: 2px;
}
.stats-grid-sm .stat-num .plus {
  font-size: 1.15rem;
  margin-left: 2px;
}
.stats-grid-sm .stat-label {
  font-size: .92rem;
  letter-spacing: 1.5px;
  margin-bottom: 3px;
}
.stats-grid-sm .stat-desc {
  font-size: .72rem;
  letter-spacing: .5px;
}
.stats-grid-sm .stat-divider {
  height: 42px;
}

/* ============================================================
   Header / Navigation
   ============================================================ */

/* ============================================================
   Sticky Site Header Wrapper (Top Bar + Nav)
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--white);
  box-shadow: 0 2px 12px rgba(13, 75, 140, 0.06);
  transition: box-shadow var(--transition);
}
.site-header.is-scrolled {
  box-shadow: 0 4px 22px rgba(13, 75, 140, 0.14);
}

/* Top info bar (Logo + tagline + phone + lang) */
.top-bar {
  background: var(--white);
  border-bottom: 1px solid var(--border);
}
.top-bar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.top-bar-left {
  display: flex;
  align-items: center;
  gap: 24px;
}
.top-bar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.top-bar-logo .logo-img {
  width: 50px;
  height: 50px;
  background-image: url('../images/logo.png');
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  display: block;
  flex-shrink: 0;
}
.top-bar-logo .logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.top-bar-logo .logo-text .name {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: 2px;
}
.top-bar-logo .logo-text .sub {
  font-size: .6rem;
  color: var(--text-light);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-top: 2px;
}
.top-bar-tagline {
  border-left: 1px solid var(--border);
  padding-left: 20px;
  color: var(--text-light);
  font-size: .85rem;
  line-height: 1.6;
}
.top-bar-tagline strong {
  display: block;
  color: var(--dark);
  font-size: .9rem;
  font-weight: 600;
  margin-bottom: 2px;
}
.top-bar-right {
  display: flex;
  align-items: center;
  gap: 24px;
}
.top-bar-phone {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--dark);
}
.top-bar-phone .ico {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}
.top-bar-phone .phone-text .label {
  font-size: .7rem;
  color: var(--text-light);
}
.top-bar-phone .phone-text .num {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 1px;
}
/* 老板直通车 - 顶栏：左侧分隔线 + 深红点缀 */
.top-bar-phone.boss-line {
  padding-left: 14px;
  border-left: 1px solid rgba(255,255,255,.12);
}
.top-bar-phone.boss-line .ico {
  background: rgba(196,30,58,.12);
  color: #e63946;
}
.top-bar-phone.boss-line .phone-text .label {
  color: #e63946;
  font-weight: 600;
}
.top-bar-phone.boss-line .phone-text .num {
  color: #c41e3a;
}
.top-bar-right {
  gap: 16px;
}
/* 老板直通车 - 联系页卡片：深色底 + 左侧红色竖条 */
.boss-direct-card {
  background: linear-gradient(135deg, #0d1b2a 0%, #1b263b 100%);
  border-radius: 10px;
  padding: 28px 24px;
  margin-top: 20px;
  position: relative;
  overflow: hidden;
}
.boss-direct-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0;
  width: 4px; height: 100%;
  background: #c41e3a;
}
.boss-direct-card .boss-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}
.boss-direct-card .boss-icon {
  width: 40px; height: 40px;
  border-radius: 8px;
  background: rgba(196,30,58,.18);
  color: #ff4d6d;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}
.boss-direct-card .boss-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 1px;
}
.boss-direct-card .boss-sub {
  font-size: .76rem;
  color: rgba(255,255,255,.45);
  margin-top: 3px;
}
.boss-direct-card .boss-phone {
  display: flex;
  align-items: center;
  gap: 10px;
}
.boss-direct-card .boss-phone-num {
  font-size: 1.55rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: 2px;
}
.boss-direct-card .boss-cta {
  margin-top: 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #c41e3a;
  color: #fff;
  padding: 9px 26px;
  border-radius: 6px;
  font-size: .88rem;
  font-weight: 600;
  text-decoration: none;
  transition: background .3s;
}
.boss-direct-card .boss-cta:hover {
  background: #a01729;
}
/* 老板直通车 - 页脚 */
.footer .boss-footer-line {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
  padding: 6px 0;
}
.footer .boss-footer-line .ico {
  width: 22px; height: 22px;
  border-radius: 4px;
  background: rgba(196,30,58,.15);
  color: #ff6b81;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .7rem;
}
.footer .boss-footer-line .boss-label {
  font-size: .75rem;
  color: rgba(255,255,255,.5);
  font-weight: 500;
}
.footer .boss-footer-line .boss-num {
  font-size: .98rem;
  font-weight: 700;
  color: #ff6b81;
  letter-spacing: 1px;
}
.top-bar-lang {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .8rem;
  color: var(--text-light);
  border-left: 1px solid var(--border);
  padding-left: 20px;
}
.top-bar-lang a {
  color: var(--text-light);
  transition: color var(--transition);
}
.top-bar-lang a.active,
.top-bar-lang a:hover {
  color: var(--accent);
}
.top-bar-lang .sep { color: var(--border); }

/* Main nav */
.header {
  position: relative;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  height: auto;
  z-index: 100;
}
.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.nav { display: flex; align-items: center; }
.nav a {
  color: var(--text);
  font-size: .95rem;
  padding: 18px 28px 20px;
  transition: all var(--transition);
  position: relative;
  letter-spacing: 1px;
  font-weight: 500;
}
.nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background: var(--accent);
  transition: width var(--transition);
  border-radius: 3px 3px 0 0;
}
.nav a:hover {
  color: var(--primary);
  background: var(--accent-light);
}
.nav a:hover::after {
  width: 60%;
}
.nav a.active {
  color: #fff;
  font-weight: 700;
  background: linear-gradient(135deg, #0d4b8c 0%, #0099d4 100%);
  box-shadow:
    inset 0 -3px 0 rgba(255,255,255,0.35),
    0 4px 14px rgba(0, 153, 212, 0.32);
  text-shadow: 0 1px 2px rgba(0,0,0,0.15);
}
.nav a.active::before {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #fff;
  box-shadow:
    0 0 0 3px rgba(255,255,255,0.35),
    0 0 8px rgba(255,255,255,0.9);
}
.nav a.active::after {
  width: calc(100% - 28px);
  height: 3px;
  bottom: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.9) 50%, transparent 100%);
  border-radius: 3px 3px 0 0;
  box-shadow: 0 0 12px rgba(255,255,255,0.7);
}
.nav-cta {
  background: var(--accent) !important;
  color: var(--white) !important;
}
.nav-cta:hover { background: var(--primary-light) !important; color: var(--white) !important; }
.nav-cta::after { display: none; }

/* Mobile toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 14px;
}
.nav-toggle span {
  width: 24px; height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: all var(--transition);
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   Hero (Template-style)
   ============================================================ */
.hero {
  position: relative;
  height: 760px;
  overflow: hidden;
  background: var(--dark);
  isolation: isolate;
}
/* 视频背景：绝对定位铺满 */
.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}
/* 深色遮罩：左侧深、向右渐变淡出，让文字始终清晰 */
.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(105deg,
      rgba(10,25,41,.92) 0%,
      rgba(10,25,41,.78) 38%,
      rgba(13,75,140,.55) 65%,
      rgba(0,153,212,.25) 100%);
}
/* 保留 ::before 以兼容一些老动画角标/光晕 */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 25% 50%, rgba(0,153,212,.18) 0%, transparent 55%);
  z-index: 1;
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 70%, rgba(10,25,41,.85) 100%);
  z-index: 1;
  pointer-events: none;
}
.hero-container {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: grid;
  grid-template-rows: 1fr auto;
  align-items: center;
  gap: 36px;
}
.hero-content {
  color: var(--white);
  max-width: 820px;
  padding: 32px 0;
  align-self: center;
  text-align: center;
  margin: 0 auto;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  background: rgba(0,153,212,.18);
  border: 1px solid rgba(0,153,212,.55);
  border-radius: 30px;
  font-size: .82rem;
  color: var(--accent);
  letter-spacing: 2px;
  margin: 0 auto 26px;
  backdrop-filter: blur(6px);
}
.hero-tag .dot {
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
  box-shadow: 0 0 12px var(--accent);
}
@keyframes pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50% { opacity: .55; transform: scale(1.35); }
}
.hero-title {
  font-size: 3.6rem;
  font-weight: 900;
  line-height: 1.22;
  margin-bottom: 18px;
  letter-spacing: 4px;
  text-shadow: 0 4px 32px rgba(0,0,0,.45);
}
.hero-title .row { display: block; }
.hero-title .highlight {
  background: linear-gradient(135deg, #00d4ff 0%, #ffffff 60%, #00d4ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 24px rgba(0,212,255,.45));
  position: relative;
}
.hero-title .highlight::after {
  content: '';
  display: block;
  width: 64px;
  height: 3px;
  margin: 14px auto 0;
  background: linear-gradient(90deg, transparent 0%, #00d4ff 50%, transparent 100%);
  border-radius: 2px;
}
.hero-sub {
  font-size: 1.08rem;
  color: rgba(255,255,255,.85);
  margin: 0 auto 36px;
  line-height: 1.85;
  max-width: 620px;
  letter-spacing: .5px;
  text-shadow: 0 2px 12px rgba(0,0,0,.3);
}
.hero-btns { display: flex; gap: 18px; flex-wrap: wrap; justify-content: center; }
.hero-btns .btn {
  padding: 15px 40px;
  font-size: 1rem;
  letter-spacing: 2px;
}

/* ===== 下滑查看提示（红色按钮下方居中，紧凑版） ===== */
.scroll-hint {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  margin: 18px auto 0;
  padding: 0;
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  cursor: pointer;
  transition: opacity .3s ease, transform .3s ease;
}
.scroll-hint:hover {
  opacity: 1;
  transform: translateY(2px);
}
.scroll-hint-text {
  font-size: .75rem;
  letter-spacing: 3px;
  color: rgba(255,255,255,0.78);
  text-shadow: 0 2px 8px rgba(0,0,0,0.4);
  animation: scrollHintFade 2.4s ease-in-out infinite;
  line-height: 1;
}
.scroll-hint-mouse {
  display: block;
  position: relative;
  width: 20px;
  height: 30px;
  border: 1.5px solid rgba(255,255,255,0.65);
  border-radius: 10px;
  background: rgba(255,255,255,0.04);
  box-shadow: 0 0 0 1px rgba(0,212,255,0.25), 0 3px 12px rgba(0,153,212,0.25);
}
.scroll-hint-dot {
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: 6px;
  border-radius: 3px;
  background: linear-gradient(180deg, #ffffff 0%, #00d4ff 100%);
  box-shadow: 0 0 6px rgba(0,212,255,0.85);
  animation: scrollHintDot 1.8s ease-in-out infinite;
}
@keyframes scrollHintDot {
  0%   { top: 6px;  opacity: 1; }
  60%  { top: 16px; opacity: 0; }
  61%  { top: 6px;  opacity: 0; }
  100% { top: 6px;  opacity: 1; }
}
@keyframes scrollHintFade {
  0%, 100% { opacity: 0.65; }
  50%      { opacity: 1; }
}
.btn-accent {
  background: linear-gradient(135deg, #e94f3a, #d8341c);
  color: var(--white);
  border: none;
}
.btn-accent:hover {
  background: linear-gradient(135deg, #d8341c, #b71f0d);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(233,79,58,.4);
}

/* Hero 底部数据资质条：4个并列指标 + 3个竖分隔线 */
.hero-metrics {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 22px 32px;
  background: linear-gradient(135deg, rgba(13,75,140,.55) 0%, rgba(10,25,41,.55) 100%);
  border: 1px solid rgba(0,212,255,.28);
  border-radius: 16px;
  backdrop-filter: blur(14px);
  box-shadow: 0 12px 40px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.08);
  margin: 0 auto 24px;
  max-width: 880px;
}
.metric {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 0 12px;
  text-align: center;
}
.metric-num {
  font-size: 2.2rem;
  font-weight: 800;
  background: linear-gradient(135deg, #00d4ff 0%, #ffffff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  letter-spacing: 1px;
  line-height: 1;
  text-shadow: 0 2px 18px rgba(0,212,255,.35);
}
.metric-num small {
  font-size: 1.4rem;
  font-weight: 700;
  margin-left: 2px;
}
.metric-label {
  font-size: .85rem;
  color: rgba(255,255,255,.78);
  letter-spacing: 2px;
  white-space: nowrap;
}
.metric-divider {
  width: 1px;
  height: 44px;
  background: linear-gradient(180deg, transparent 0%, rgba(0,212,255,.45) 50%, transparent 100%);
  flex-shrink: 0;
}

/* Right side: Case Carousel */
.hero-right {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.case-carousel {
  position: relative;
  width: 540px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 18px;
  padding: 18px 18px 16px;
  backdrop-filter: blur(10px);
  box-shadow: 0 20px 60px rgba(0,0,0,.35);
}
.case-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--accent);
  color: var(--white);
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: 2px;
  border-radius: 20px;
  margin-bottom: 12px;
  box-shadow: 0 4px 12px rgba(233,79,58,.4);
}
.case-label::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--white);
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}
.case-viewport {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 12px;
  background: var(--dark);
}
.case-track {
  display: flex;
  width: 100%;
  height: 100%;
  transition: transform .6s cubic-bezier(.4,0,.2,1);
  will-change: transform;
}
.case-slide {
  flex: 0 0 100%;
  width: 100%;
  height: 100%;
  position: relative;
}
.case-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.case-slide::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,.45) 0%, transparent 35%);
  pointer-events: none;
}
.case-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 38px; height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,.85);
  color: var(--primary);
  border: none;
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all .25s ease;
  box-shadow: 0 4px 14px rgba(0,0,0,.3);
}
.case-nav:hover {
  background: var(--accent);
  color: var(--white);
  transform: translateY(-50%) scale(1.08);
}
.case-nav.prev { left: 10px; }
.case-nav.next { right: 10px; }
.case-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 14px;
}
.case-dots .cd {
  width: 22px; height: 4px;
  background: rgba(255,255,255,.3);
  border-radius: 2px;
  cursor: pointer;
  transition: all .3s ease;
}
.case-dots .cd.active {
  width: 32px;
  background: var(--accent);
}

/* Carousel indicators */
.hero-dots {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 3;
}
.hero-dots .dot {
  width: 28px; height: 4px;
  background: rgba(255,255,255,.3);
  border-radius: 2px;
  cursor: pointer;
  transition: background var(--transition);
}
.hero-dots .dot.active { background: var(--accent); }

/* Right floating sidebar */
.side-toolbar {
  position: fixed;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 999;
  background: var(--white);
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0,0,0,.12);
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.side-tool {
  width: 48px; height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  border-radius: 8px;
  color: var(--text-light);
  font-size: .65rem;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}
.side-tool .ico {
  font-size: 1.3rem;
  margin-bottom: 2px;
}
.side-tool:hover {
  background: var(--accent-light);
  color: var(--accent);
}
.side-tool .badge {
  position: absolute;
  top: 4px; right: 4px;
  width: 16px; height: 16px;
  background: #e94f3a;
  color: var(--white);
  border-radius: 50%;
  font-size: .6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}
.side-tool.divider {
  margin: 4px 8px;
  height: 1px;
  background: var(--border);
}
.side-tool.primary {
  background: var(--accent);
  color: var(--white);
}
.side-tool.primary:hover { background: var(--primary); }

/* ============================================================
   Page Banner (sub-pages)
   ============================================================ */
.page-banner {
  position: relative;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0a1929 0%, #0d4b8c 70%, #0099d4 100%);
  color: var(--white);
  text-align: center;
  overflow: hidden;
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 70% 30%, rgba(0,153,212,.25), transparent 50%);
}
.page-banner h1 {
  position: relative;
  font-size: 2.6rem;
  font-weight: 700;
  letter-spacing: 3px;
  z-index: 1;
}
.page-banner .breadcrumb {
  position: relative;
  z-index: 1;
  margin-top: 12px;
  font-size: .85rem;
  color: rgba(255,255,255,.6);
}
.page-banner .breadcrumb a:hover { color: var(--accent); }

/* ============================================================
   Page Banner Marquee — 关于我们页 图片无限右到左循环
   ============================================================ */
.page-banner-marquee {
  height: 360px;
  display: grid;
  grid-template-columns: minmax(320px, 30%) 1fr;
  align-items: center;
}
.banner-marquee {
  grid-column: 2;
  position: relative;
  height: 100%;
  overflow: hidden;
  background:
    linear-gradient(135deg, #0a1929 0%, #0d4b8c 70%, #0099d4 100%);
}
/* 左侧深蓝渐变蒙层，遮住右栏图片的最左端，避免图片从边界突兀进入 */
.banner-marquee::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 100px;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(90deg, #0a1929 0%, rgba(10,25,41,0.6) 50%, transparent 100%);
}
/* 右侧淡出遮罩，模拟 LED 屏"图片离开" */
.banner-marquee::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 120px;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(270deg, #0099d4 0%, transparent 100%);
}
.banner-marquee-track {
  display: flex;
  align-items: center;
  height: 100%;
  width: max-content;
  gap: 28px;
  padding: 0 24px;
  animation: banner-marquee-flow 50s linear infinite;
  will-change: transform;
}
.banner-marquee-track img {
  flex: 0 0 auto;
  width: 144px;
  height: 144px;
  object-fit: cover;
  border-radius: 14px;
  background: rgba(255,255,255,0.06);
  border: 2px solid rgba(255,255,255,0.22);
  box-shadow: 0 8px 24px rgba(0,0,0,0.4), inset 0 0 0 1px rgba(255,255,255,0.1);
  transition: transform .35s ease, border-color .35s ease, box-shadow .35s ease;
}
/* 对齐排列：所有图片在同一水平基线上，不错落 */
.banner-marquee-track img:nth-child(2n),
.banner-marquee-track img:nth-child(3n),
.banner-marquee-track img:nth-child(5n+1) {
  transform: none;
}
.banner-marquee-track img:hover {
  transform: scale(1.12);
  border-color: var(--accent);
  box-shadow: 0 12px 32px rgba(0,153,212,0.6), 0 0 0 3px rgba(0,153,212,0.28);
  z-index: 3;
}
@keyframes banner-marquee-flow {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.page-banner-text {
  grid-column: 1;
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  padding-left: 8%;
  text-align: left;
  text-shadow: 0 2px 18px rgba(0,0,0,0.55), 0 0 30px rgba(0,153,212,0.35);
  max-width: 30%;
  min-width: 280px;
}
.page-banner-text h1 {
  font-size: 2.8rem;
  font-weight: 700;
  letter-spacing: 4px;
  position: relative;
  padding-left: 22px;
}
.page-banner-text h1::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 70%;
  background: linear-gradient(180deg, var(--accent) 0%, var(--primary) 100%);
  border-radius: 3px;
  box-shadow: 0 0 12px rgba(0,153,212,0.6);
}
.page-banner-text .breadcrumb {
  margin-top: 16px;
  padding-left: 22px;
  font-size: .9rem;
  color: rgba(255,255,255,0.85);
}
.page-banner-text .breadcrumb a {
  color: rgba(255,255,255,0.85);
}
.page-banner-text .breadcrumb a:hover { color: var(--accent); }
/* 移动端：grid 改为单列，文字在上、图片在下 */
@media (max-width: 768px) {
  .page-banner-marquee {
    grid-template-columns: 1fr;
    height: auto;
  }
  .page-banner-text {
    padding: 32px 20px 0;
    grid-column: 1;
    grid-row: 1;
  }
  .page-banner-text h1 { font-size: 1.9rem; letter-spacing: 2px; }
  .banner-marquee {
    grid-column: 1;
    grid-row: 2;
    height: 180px;
    margin-top: 16px;
  }
}
/* 尊重用户的"减少动态"偏好 */
@media (prefers-reduced-motion: reduce) {
  .banner-marquee-track { animation: none; }
}

/* ============================================================
   Feature / Advantage Cards
   ============================================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  transition: all var(--transition);
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.feature-icon {
  width: 64px; height: 64px;
  margin: 0 auto 20px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--accent-light), #d4ecf7);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}
.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 12px;
}
.feature-card p {
  font-size: .88rem;
  color: var(--text-light);
  line-height: 1.7;
}

/* Transportation route grid (4-col cards with detailed route breakdown) */
.features-grid.route-grid {
  align-items: stretch;
}
.features-grid.route-grid .feature-card {
  text-align: left;
  display: flex;
  flex-direction: column;
  padding: 32px 24px;
}
.features-grid.route-grid .feature-icon {
  margin: 0 0 16px;
}
.features-grid.route-grid .feature-card h3 {
  font-size: 1.2rem;
  text-align: center;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--border);
}
.features-grid.route-grid .feature-card p {
  font-size: .85rem;
  line-height: 1.75;
  color: var(--text);
  text-align: left;
  flex: 1;
}
.features-grid.route-grid .feature-card p .route-tip {
  display: inline-block;
  font-weight: 700;
  color: var(--primary);
  margin-right: 4px;
}
.features-grid.route-grid .feature-card p .hl {
  color: var(--accent);
  font-weight: 700;
  background: linear-gradient(transparent 70%, rgba(212, 84, 77, .12) 70%);
  padding: 0 2px;
}

/* Image-based feature card (for category showcase & core advantages) */
.feature-card.feature-card-img {
  padding: 0;
  overflow: hidden;
  text-align: left;
}
.feature-card.feature-card-img .feature-card-pic {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #f4f6f8;
}
.feature-card.feature-card-img .feature-card-pic img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .5s ease;
}
.feature-card.feature-card-img:hover .feature-card-pic img {
  transform: scale(1.06);
}
.feature-card.feature-card-img .feature-card-pic::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(13,75,140,.18));
  pointer-events: none;
}
.feature-card.feature-card-img h3 {
  padding: 22px 24px 6px;
  font-size: 1.2rem;
}
.feature-card.feature-card-img p {
  padding: 0 24px 26px;
  font-size: .88rem;
}

/* ============================================================
   Certification Carousel (Home → About preview visual)
   ============================================================ */
.cert-carousel {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--dark), var(--primary));
}
.cert-track {
  display: flex;
  width: 100%;
  height: 100%;
  transition: transform .7s cubic-bezier(.4,0,.2,1);
  will-change: transform;
}
.cert-slide {
  flex: 0 0 100%;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.cert-slide img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 12px 40px rgba(0,0,0,.35);
}
.cert-badge {
  position: absolute;
  bottom: 24px;
  right: 24px;
  background: var(--white);
  padding: 16px 22px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  z-index: 3;
  pointer-events: none;
}
.cert-badge .num {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.1;
}
.cert-badge .label {
  font-size: .75rem;
  color: var(--text-light);
  margin-top: 2px;
}
.cert-nav {
  position: absolute;
  top: 50%;
  left: 0; right: 0;
  display: flex;
  justify-content: space-between;
  padding: 0 12px;
  transform: translateY(-50%);
  z-index: 3;
  pointer-events: none;
}
.cert-nav button {
  width: 36px; height: 36px;
  border: none;
  border-radius: 50%;
  background: rgba(255,255,255,.85);
  color: var(--primary);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  pointer-events: auto;
  box-shadow: 0 4px 16px rgba(0,0,0,.25);
  transition: all var(--transition);
}
.cert-nav button:hover {
  background: var(--white);
  transform: scale(1.1);
}
.cert-dots {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 3;
}
.cert-dots .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,.4);
  cursor: pointer;
  transition: all var(--transition);
}
.cert-dots .dot.active {
  width: 24px;
  border-radius: 4px;
  background: var(--accent);
}

/* ============================================================
   About Preview (Home)
   ============================================================ */
.about-preview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.about-preview .visual {
  position: relative;
  height: 440px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background:
    radial-gradient(circle at 18% 20%, rgba(0, 153, 212, 0.42) 0%, transparent 48%),
    radial-gradient(circle at 82% 82%, rgba(26, 111, 196, 0.30) 0%, transparent 52%),
    radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.06) 0%, transparent 60%),
    linear-gradient(135deg, #061021 0%, #0a1929 30%, #0d4b8c 70%, #1a6fc4 100%);
  box-shadow:
    0 24px 60px rgba(13, 75, 140, 0.32),
    inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}
/* 网格线纹理（科技感底纹） */
.about-preview .visual .visual-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  background-position: -1px -1px;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 80%);
  pointer-events: none;
}
/* 中心光晕 */
.about-preview .visual .visual-bg-glow {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 420px; height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 153, 212, 0.18) 0%, transparent 65%);
  filter: blur(20px);
  pointer-events: none;
}
/* 旋转装饰圆环 */
.about-preview .visual .visual-deco-ring {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 360px; height: 360px;
  border: 1px dashed rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  animation: visual-rotate 40s linear infinite;
  pointer-events: none;
}
.about-preview .visual .visual-deco-ring::before,
.about-preview .visual .visual-deco-ring::after {
  content: '';
  position: absolute;
  width: 8px; height: 8px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 0 12px var(--accent), 0 0 0 4px rgba(0, 153, 212, 0.25);
}
.about-preview .visual .visual-deco-ring::before { top: -4px; left: 50%; transform: translateX(-50%); }
.about-preview .visual .visual-deco-ring::after  { bottom: -4px; left: 50%; transform: translateX(-50%); opacity: 0.7; }
@keyframes visual-rotate {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to   { transform: translate(-50%, -50%) rotate(360deg); }
}
/* 装饰点阵（右上角） */
.about-preview .visual .visual-deco-dots {
  position: absolute;
  top: 28px; right: 28px;
  width: 72px; height: 72px;
  background-image: radial-gradient(circle, rgba(255,255,255,0.45) 1.6px, transparent 1.6px);
  background-size: 12px 12px;
  opacity: 0.7;
  pointer-events: none;
}
/* 角标文字 */
.about-preview .visual .visual-mark {
  position: absolute;
  font-size: .65rem;
  font-weight: 600;
  letter-spacing: 4px;
  color: rgba(255, 255, 255, 0.45);
  text-transform: uppercase;
  font-family: var(--font-sans);
  pointer-events: none;
  z-index: 1;
}
.about-preview .visual .visual-mark-tl {
  top: 28px; left: 32px;
  display: flex; align-items: center; gap: 8px;
}
.about-preview .visual .visual-mark-tl::before {
  content: '';
  width: 24px; height: 1px;
  background: rgba(0, 153, 212, 0.6);
  box-shadow: 0 0 6px var(--accent);
}
.about-preview .visual .visual-mark-bl {
  bottom: 28px; left: 32px;
  letter-spacing: 6px;
  display: flex; align-items: center; gap: 8px;
}
.about-preview .visual .visual-mark-bl::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent);
}
/* 中心 logo 区 */
.about-preview .visual .visual-center {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  z-index: 2;
}
.about-preview .visual .visual-logo-card {
  display: inline-block;
  padding: 14px;
  background: rgba(255, 255, 255, 0.96);
  border-radius: 18px;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.15),
    0 0 50px rgba(0, 153, 212, 0.45),
    0 24px 60px rgba(0, 0, 0, 0.35);
  position: relative;
  transition: transform var(--transition);
}
.about-preview .visual .visual-logo-card::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--accent) 0%, transparent 50%, var(--primary) 100%);
  z-index: -1;
  opacity: 0.5;
  filter: blur(8px);
}
.about-preview .visual .visual-logo-img {
  display: block;
  width: 180px;
  height: auto;
  border-radius: 8px;
}
/* 视频层（默认隐藏，2 秒后淡入播放） */
.about-preview .visual .visual-video {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0;
  transition: opacity 1.2s ease-in-out;
  pointer-events: none;
  overflow: hidden;
  border-radius: var(--radius-lg);
}
.about-preview .visual .visual-video.is-active {
  opacity: 1;
}
.about-preview .visual .visual-video video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
}
/* 视频周围深蓝渐变蒙层（让视频与背景更好融合） */
.about-preview .visual .visual-video-vignette {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at center, transparent 35%, rgba(6, 16, 33, 0.55) 95%),
    linear-gradient(135deg, rgba(13, 75, 140, 0.18) 0%, rgba(0, 153, 212, 0.10) 100%);
  pointer-events: none;
  transition: opacity 1.2s ease-in-out;
}
/* 视频开始播放时（is-active）渐变蒙层也淡出，呈现原视频本色 */
.about-preview .visual .visual-video.is-active .visual-video-vignette {
  opacity: 0;
}
/* 视频播放时中心 logo 淡出 */
.about-preview .visual .visual-center.is-fading {
  opacity: 0;
  transition: opacity .8s ease-in-out;
}
.about-preview .visual .visual-tagline {
  margin-top: 18px;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: 6px;
  color: rgba(255, 255, 255, 0.85);
  text-transform: uppercase;
  text-shadow: 0 0 12px rgba(0, 153, 212, 0.6);
}
/* 右下角数据卡片 */
.about-preview .visual .badge-float {
  position: absolute;
  bottom: 32px;
  right: 32px;
  background: var(--white);
  padding: 20px 28px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  z-index: 3;
  opacity: 1;
  transform: translateY(0) scale(1);
  transition: opacity .5s ease, transform .5s ease;
}
.about-preview .visual .badge-float.is-hidden {
  opacity: 0;
  transform: translateY(12px) scale(.96);
  pointer-events: none;
}
.about-preview .visual .badge-float .num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
}
.about-preview .visual .badge-float .label {
  font-size: .8rem;
  color: var(--text-light);
}
.about-preview .content h2 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}
.about-preview .content .en-sub {
  font-size: .8rem;
  color: var(--text-light);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.about-preview .content .line {
  width: 48px; height: 3px;
  background: var(--accent);
  margin-bottom: 24px;
  border-radius: 2px;
}
.about-preview .content p {
  color: var(--text-light);
  margin-bottom: 16px;
  font-size: .95rem;
}
.about-preview .content ul.check-list {
  margin: 24px 0 32px;
}
.about-preview .content ul.check-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  font-size: .92rem;
  color: var(--text);
}
.about-preview .content ul.check-list li::before {
  content: '✓';
  width: 22px; height: 22px;
  background: var(--accent);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .7rem;
  flex-shrink: 0;
}

/* ============================================================
   Products Grid
   ============================================================ */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--border);
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.product-img {
  height: 200px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-img .icon-text {
  font-size: 3rem;
  font-weight: 800;
  color: rgba(255,255,255,.25);
  letter-spacing: 2px;
}
.product-img .tag {
  position: absolute;
  top: 16px; right: 16px;
  background: rgba(255,255,255,.9);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: .75rem;
  color: var(--primary);
  font-weight: 600;
}
.product-body { padding: 24px; }
.product-body h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 10px;
}
.product-body p {
  font-size: .85rem;
  color: var(--text-light);
  margin-bottom: 16px;
  line-height: 1.7;
}
.product-body .specs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.product-body .specs span {
  font-size: .75rem;
  padding: 4px 10px;
  background: var(--bg-light);
  border-radius: 4px;
  color: var(--text-light);
}
.product-link {
  margin-top: 16px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .85rem;
  color: var(--accent);
  font-weight: 500;
  transition: gap var(--transition);
}
.product-link:hover { gap: 12px; }

/* ============================================================
   Brands Wall
   ============================================================ */
.brands-wall {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
}
.brand-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 16px;
  text-align: center;
  transition: all var(--transition);
}
.brand-item:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.brand-item .brand-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dark);
}
.brand-item .brand-desc {
  font-size: .75rem;
  color: var(--text-light);
  margin-top: 4px;
}

/* ============================================================
   News / Articles
   ============================================================ */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.news-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--border);
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.news-img {
  height: 180px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  position: relative;
}
.news-img .date {
  position: absolute;
  bottom: 16px; left: 16px;
  background: var(--white);
  padding: 6px 14px;
  border-radius: var(--radius);
  font-size: .8rem;
  font-weight: 600;
  color: var(--primary);
}
.news-body { padding: 24px; }
.news-body h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 10px;
  line-height: 1.5;
}
.news-body p {
  font-size: .85rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 12px;
}
.news-body .more {
  font-size: .82rem;
  color: var(--accent);
  font-weight: 500;
}

/* ============================================================
   CTA Section
   ============================================================ */
.cta-section {
  position: relative;
  padding: 80px 0;
  background: linear-gradient(135deg, var(--dark), var(--primary));
  color: var(--white);
  text-align: center;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(0,153,212,.15), transparent 70%);
}
.cta-section .container { position: relative; z-index: 1; }
.cta-section h2 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.cta-section p {
  color: rgba(255,255,255,.7);
  margin-bottom: 32px;
  font-size: 1rem;
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,.65);
  padding: 64px 0 0;
}
.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p {
  font-size: .85rem;
  line-height: 1.8;
  margin-bottom: 20px;
}
.footer-brand .contact-line {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .85rem;
  margin-bottom: 8px;
}
.footer-brand .contact-line .ico {
  color: var(--accent);
}
.footer-col h4 {
  color: var(--white);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
}
.footer-col ul li {
  margin-bottom: 12px;
}
.footer-col ul li a {
  font-size: .85rem;
  transition: color var(--transition);
}
.footer-col ul li a:hover { color: var(--accent); }

.footer-qr {
  text-align: center;
}
.footer-qr .qr-box {
  width: 120px; height: 120px;
  background: var(--white);
  border-radius: var(--radius);
  margin: 0 auto 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .7rem;
  color: var(--text-light);
}
.footer-qr .qr-label {
  font-size: .8rem;
}

.footer-bottom {
  padding: 20px 0;
  text-align: center;
  font-size: .8rem;
  color: rgba(255,255,255,.4);
}
.footer-bottom a { color: rgba(255,255,255,.4); }
.footer-bottom a:hover { color: var(--accent); }
.footer-bottom .links {
  margin-bottom: 8px;
}
.footer-bottom .links a:not(:last-child)::after {
  content: '|';
  margin: 0 8px;
  color: rgba(255,255,255,.15);
}

/* ============================================================
   About Page - Timeline
   ============================================================ */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 20px 0;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0; bottom: 0;
  width: 2px;
  background: var(--border);
  transform: translateX(-50%);
}
.timeline-item {
  position: relative;
  width: 50%;
  padding: 0 40px 40px;
}
.timeline-item:nth-child(odd) {
  left: 0;
  text-align: right;
}
.timeline-item:nth-child(even) {
  left: 50%;
  text-align: left;
}
.timeline-item::before {
  content: '';
  position: absolute;
  top: 8px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--white);
  box-shadow: 0 0 0 3px var(--accent);
  z-index: 1;
}
.timeline-item:nth-child(odd)::before { right: -7px; }
.timeline-item:nth-child(even)::before { left: -7px; }
.timeline-year {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 8px;
}
.timeline-content h4 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 8px;
}
.timeline-content p {
  font-size: .88rem;
  color: var(--text-light);
}

/* About - Culture cards */
.culture-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.culture-card {
  text-align: center;
  padding: 40px 28px;
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.culture-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.culture-card .icon {
  width: 72px; height: 72px;
  margin: 0 auto 20px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}
.culture-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}
.culture-card p {
  font-size: .88rem;
  color: var(--text-light);
}

/* About - Honor */
.honor-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.honor-item {
  text-align: center;
  padding: 28px 16px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
}
.honor-item:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.honor-item .medal {
  font-size: 2.5rem;
  margin-bottom: 12px;
}
.honor-item h4 {
  font-size: .95rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 6px;
}
.honor-item p {
  font-size: .78rem;
  color: var(--text-light);
}

/* ============================================================
   Products Page - Filter
   ============================================================ */
.product-filter {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.filter-btn {
  padding: 8px 24px;
  border: 2px solid var(--border);
  background: var(--white);
  border-radius: 30px;
  font-size: .88rem;
  color: var(--text);
  transition: all var(--transition);
}
.filter-btn:hover { border-color: var(--accent); color: var(--accent); }
.filter-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--white);
}

/* Material detail table */
.material-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 24px;
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.material-table th {
  background: var(--primary);
  color: var(--white);
  padding: 14px 20px;
  text-align: left;
  font-size: .85rem;
  font-weight: 600;
}
.material-table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  font-size: .88rem;
  color: var(--text);
}
.material-table tr:last-child td { border-bottom: none; }
.material-table tr:hover td { background: var(--bg-light); }
.material-table .mat-name {
  font-weight: 600;
  color: var(--primary);
}

/* ============================================================
   Contact Page
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: stretch;
}
.contact-info-card {
  background: linear-gradient(135deg, var(--dark), var(--primary));
  border-radius: var(--radius-lg);
  padding: 40px;
  color: var(--white);
}
.contact-info-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.contact-info-card .en-sub {
  font-size: .78rem;
  color: rgba(255,255,255,.5);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.contact-info-card .line {
  width: 40px; height: 3px;
  background: var(--accent);
  margin-bottom: 28px;
}
.contact-list { margin-bottom: 28px; }
.contact-list .item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}
.contact-list .item .ico {
  width: 44px; height: 44px;
  background: rgba(255,255,255,.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.contact-list .item .label {
  font-size: .78rem;
  color: rgba(255,255,255,.5);
  margin-bottom: 4px;
}
.contact-list .item .value {
  font-size: .95rem;
  font-weight: 500;
}

.contact-form {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.contact-form h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}
.contact-form .en-sub {
  font-size: .78rem;
  color: var(--text-light);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.form-row { margin-bottom: 20px; }
.form-row label {
  display: block;
  font-size: .85rem;
  color: var(--text);
  margin-bottom: 8px;
  font-weight: 500;
}
.form-row label .req { color: #e53e3e; }
.form-row input,
.form-row textarea,
.form-row select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: .9rem;
  font-family: inherit;
  transition: border-color var(--transition);
  background: var(--bg-gray);
}
.form-row input:focus,
.form-row textarea:focus,
.form-row select:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--white);
}
.form-row textarea { resize: vertical; min-height: 100px; }
.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.map-section {
  margin-top: 48px;
}
.map-placeholder {
  width: 100%;
  height: 360px;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.map-placeholder .pin {
  text-align: center;
  color: var(--text-light);
}
.map-placeholder .pin .ico {
  font-size: 3rem;
  margin-bottom: 8px;
}

/* Map block (关于我们页) */
.map-block {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 24px;
  margin-top: 40px;
  align-items: stretch;
}
.map-info {
  background: linear-gradient(135deg, #f7fbff, #fff);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  box-shadow: var(--shadow-sm);
}
.map-info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.map-info-item .ico {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  color: var(--white);
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(0,153,212,.25);
}
.map-info-item .label {
  font-size: .82rem;
  color: var(--text-light);
  margin-bottom: 4px;
  letter-spacing: 1px;
}
.map-info-item .value {
  font-size: .98rem;
  color: var(--dark);
  font-weight: 600;
  line-height: 1.6;
}
.map-btn {
  margin-top: 8px;
  align-self: flex-start;
}
.map-container {
  position: relative;
  height: 460px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  background: linear-gradient(135deg, #e8f4f8, #dceef0);
}
.map-container iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}
.map-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}
.map-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(232,244,248,0) 0%, rgba(220,238,240,0.15) 100%);
  pointer-events: none;
}
.map-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,.92);
  border: 1px solid rgba(13,75,140,.15);
  border-radius: 20px;
  padding: 6px 14px;
  font-size: .82rem;
  color: var(--primary);
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(13,75,140,.18);
}
.map-label .ico {
  color: #e63946;
  font-size: 1rem;
}
.map-fallback {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
.map-fallback .pin {
  text-align: left;
  background: rgba(255,255,255,.96);
  border: 1px solid rgba(13,75,140,.18);
  border-radius: 16px;
  padding: 22px 26px;
  box-shadow: 0 12px 40px rgba(13,75,140,.25), 0 2px 8px rgba(0,0,0,.08);
  pointer-events: auto;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  min-width: 280px;
  max-width: 320px;
  transform: translateX(-30%);
}
.map-fallback .pin::before {
  content: "";
  position: absolute;
  right: -8px;
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
  width: 16px;
  height: 16px;
  background: rgba(255,255,255,.96);
  border-right: 1px solid rgba(13,75,140,.18);
  border-top: 1px solid rgba(13,75,140,.18);
}
.map-fallback .pin .ico {
  font-size: 1.8rem;
  margin-bottom: 4px;
  color: #e63946;
  filter: drop-shadow(0 2px 4px rgba(230,57,70,.3));
}
.map-fallback .pin .text {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 2px;
  letter-spacing: .5px;
}
.map-fallback .pin .tag {
  display: inline-block;
  font-size: .7rem;
  background: linear-gradient(135deg, #e63946, #ff6b6b);
  color: #fff;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: .5px;
}
.map-fallback .pin .addr {
  font-size: .85rem;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 8px;
}
.map-fallback .pin .meta {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .78rem;
  color: var(--primary);
  margin-bottom: 12px;
  padding: 6px 10px;
  background: rgba(13,75,140,.06);
  border-radius: 8px;
}
.map-fallback .pin .meta .ico {
  font-size: .9rem;
  margin: 0;
  color: var(--primary);
  filter: none;
}
.map-fallback .nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  background: linear-gradient(135deg, var(--accent), #ff6b6b);
  color: var(--white);
  border-radius: 22px;
  text-decoration: none;
  font-size: .85rem;
  font-weight: 700;
  transition: all .25s ease;
  box-shadow: 0 4px 12px rgba(230,57,70,.25);
  letter-spacing: .5px;
}
.map-fallback .nav-btn:hover {
  background: linear-gradient(135deg, var(--primary), #1a3a5c);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(13,75,140,.3);
}

/* ---------- FAQ Accordion ---------- */
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 16px;
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.faq-item:hover { box-shadow: var(--shadow-sm); }
.faq-item.open { border-color: var(--accent); box-shadow: var(--shadow-md); }
.faq-q {
  padding: 20px 28px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  user-select: none;
}
.faq-q .toggle-icon {
  color: var(--accent);
  font-size: 1.4rem;
  flex-shrink: 0;
  transition: transform var(--transition);
  width: 24px;
  text-align: center;
}
.faq-item.open .toggle-icon { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-a .faq-content {
  padding: 0 28px 20px;
  font-size: .9rem;
  color: var(--text-light);
  line-height: 1.8;
}

/* ============================================================
   Animations
   ============================================================ */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-up.visible,
.fade-up.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .brands-wall { grid-template-columns: repeat(3, 1fr); }
  .honor-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .about-preview { grid-template-columns: 1fr; }
  .about-preview .visual { height: 300px; }
  .contact-grid { grid-template-columns: 1fr; }
  .culture-grid { grid-template-columns: 1fr; }

  .top-bar-tagline { display: none; }
  .top-bar-lang { display: none; }
  .hero { height: auto; min-height: 640px; padding: 80px 0 40px; }
  .hero-container { grid-template-rows: 1fr auto; gap: 28px; }
  .hero-title { font-size: 2.8rem; }
  .hero-metrics { max-width: 700px; margin: 0 auto 24px; }
  .case-carousel { width: 100%; max-width: 540px; margin: 0 auto; }
  .side-toolbar { right: 8px; }
  .map-block { grid-template-columns: 1fr; }
  .map-container { height: 380px; }
  .stat-num { font-size: 2.4rem; }
  .stat-divider { display: none; }
  .stats-grid { gap: 16px; }
}

@media (max-width: 768px) {
  .top-bar-inner { flex-wrap: wrap; gap: 12px; }
  .top-bar-left { width: 100%; justify-content: flex-start; }
  .top-bar-right { width: 100%; justify-content: space-between; }
  .top-bar-phone .phone-text .num { font-size: 1.1rem; }
  .top-bar-phone.boss-line .phone-text .num { font-size: .95rem; }
  .boss-direct-card .boss-phone-num { font-size: 1.25rem; }

  .header-inner { justify-content: space-between; padding: 0 16px; }
  .nav {
    position: fixed;
    top: 100px;
    left: 0; right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 4px 16px rgba(13, 75, 140, 0.1);
    flex-direction: column;
    padding: 8px;
    gap: 0;
    transform: translateY(-200%);
    transition: transform var(--transition);
    height: auto;
    z-index: 99;
  }
  .nav.open { transform: translateY(0); }
  .nav a {
    width: 100%;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border);
    text-align: center;
  }
  .nav-toggle { display: flex; }

  .hero { height: auto; min-height: 720px; padding: 60px 0 40px; }
  .hero-container { grid-template-rows: 1fr auto; gap: 28px; }
  .hero-title { font-size: 2.2rem; letter-spacing: 2px; }
  .hero-sub { font-size: .95rem; line-height: 1.7; }
  .hero-btns .btn { padding: 12px 28px; font-size: .9rem; }
  .hero-metrics {
    flex-wrap: wrap;
    gap: 16px 0;
    padding: 16px 18px;
  }
  .metric { flex: 0 0 50%; padding: 8px 4px; }
  .metric-divider { display: none; }
  .metric-num { font-size: 1.8rem; }
  .metric-label { font-size: .78rem; letter-spacing: 1px; }

  .diamond-grid {
    width: 280px; height: 280px;
    transform: scale(.9);
  }
  .diamond { width: 120px; height: 120px; }
  .diamond-1 { top: 0; left: 80px; }
  .diamond-2 { top: 0; left: 180px; }
  .diamond-3 { top: 160px; left: 80px; }
  .diamond-4 { top: 160px; left: 180px; }
  .side-toolbar { display: none; }

  .section { padding: 48px 0; }
  .section-title h2 { font-size: 1.5rem; }

  .section { padding: 48px 0; }
  .section-title h2 { font-size: 1.5rem; }

  .features-grid,
  .products-grid,
  .news-grid,
  .brands-wall,
  .honor-grid,
  .culture-grid { grid-template-columns: 1fr; }

  /* Certification carousel on mobile */
  .cert-carousel { height: 300px !important; }
  .cert-badge { top: 16px; right: 16px; bottom: auto; padding: 10px 14px; }
  .cert-badge .num { font-size: 1.1rem; }
  .cert-badge .label { font-size: .65rem; }
  .cert-dots { bottom: 16px; }

  .timeline::before { left: 20px; }
  .timeline-item {
    width: 100%;
    left: 0 !important;
    text-align: left !important;
    padding-left: 48px;
    padding-right: 0;
  }
  .timeline-item::before {
    left: 14px !important;
    right: auto !important;
  }

  .footer-main { grid-template-columns: 1fr; }
  .form-row-2 { grid-template-columns: 1fr; }
  .page-banner h1 { font-size: 1.8rem; }
  .container { padding: 0 16px; }
}

/* ==================== Product System (产品体系) ==================== */
.product-system-section {
  background:
    radial-gradient(circle at 10% 0%, rgba(13, 75, 140, .04), transparent 40%),
    radial-gradient(circle at 90% 100%, rgba(0, 153, 212, .04), transparent 40%),
    #fafbfd;
}

/* 一级 Tab：管材/配件/阀门/辅材 - 卡片化 + 主题底纹 */
.ps-level1-tabs {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 14px;
  margin: 60px auto 0;
  flex-wrap: wrap;
  position: relative;
  padding: 24px 26px;
  max-width: 940px;

  /* 主题底纹：浅蓝渐变 + 斜向条纹（呼应工业管道主题） */
  background:
    repeating-linear-gradient(135deg,
      rgba(13, 75, 140, .06) 0,
      rgba(13, 75, 140, .06) 1.5px,
      transparent 1.5px,
      transparent 12px),
    linear-gradient(135deg, #f3f8ff 0%, #e3edf7 100%);

  border: 1.5px solid rgba(13, 75, 140, .2);
  border-radius: 22px;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .85),
    0 14px 36px rgba(13, 75, 140, .1);
}

/* 顶部 chip 标识 - 强化"分类导航"语义 */
.ps-level1-tabs::before {
  content: '产品分类 · CATEGORY';
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  padding: 5px 22px;
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: 4px;
  box-shadow: 0 6px 14px rgba(13, 75, 140, .28);
  white-space: nowrap;
}

/* 左右两端装饰点 - 工业"管道接口" */
.ps-level1-tabs::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 6px;
  height: 28px;
  border-radius: 6px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  transform: translateY(-50%);
  box-shadow: 0 0 0 3px rgba(13, 75, 140, .1);
  opacity: .5;
  left: 12px;
}

.ps-tab {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 28px;
  border: 1.5px solid #d8e2ec;
  border-radius: 999px;
  background: #fff;
  color: var(--gray-700);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .25s ease;
  position: relative;
  overflow: hidden;
}

.ps-tab::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity .25s ease;
  z-index: 0;
}

.ps-tab > * { position: relative; z-index: 1; }

.ps-tab-num {
  font-size: .75rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 1px;
  transition: color .25s ease;
}

.ps-tab-name {
  font-weight: 600;
}

.ps-tab:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(13, 75, 140, .12);
}

.ps-tab.active {
  border-color: transparent;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(13, 75, 140, .28);
}

.ps-tab.active::before { opacity: 1; }
.ps-tab.active .ps-tab-num { color: #fff; }

/* 一级面板 */
.ps-level1-panels { min-height: 320px; }

.ps-panel { display: none; animation: psFadeIn .35s ease; }
.ps-panel.active { display: block; }

@keyframes psFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* 二级分类卡片网格（4列） */
.ps-cat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.ps-cat-card {
  background: #fff;
  border: 1px solid #e6ecf3;
  border-radius: 14px;
  overflow: hidden;
  cursor: pointer;
  transition: all .25s ease;
  position: relative;
}

.ps-cat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(13, 75, 140, .14);
  border-color: var(--primary);
}

.ps-cat-card-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, #eef3f8 0%, #dbe6f1 100%);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ps-cat-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(45deg, transparent 0 12px, rgba(13, 75, 140, .04) 12px 13px);
  pointer-events: none;
}

.ps-cat-card-img img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.ps-placeholder {
  position: relative;
  z-index: 2;
  text-align: center;
  color: #98a4b4;
  font-size: .78rem;
  font-weight: 500;
  letter-spacing: .5px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.ps-placeholder::before {
  content: '';
  width: 38px;
  height: 38px;
  border: 2px dashed #c4cfdb;
  border-radius: 8px;
  display: block;
  background:
    linear-gradient(135deg, transparent calc(50% - 1px), #c4cfdb calc(50% - 1px), #c4cfdb calc(50% + 1px), transparent calc(50% + 1px)),
    linear-gradient(45deg, transparent calc(50% - 1px), #c4cfdb calc(50% - 1px), #c4cfdb calc(50% + 1px), transparent calc(50% + 1px));
}

.ps-cat-card-body {
  padding: 16px 18px 18px;
}

.ps-cat-card-name {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 6px;
  line-height: 1.4;
}

.ps-cat-card-count {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: .78rem;
  color: var(--primary);
  background: rgba(13, 75, 140, .08);
  padding: 3px 10px;
  border-radius: 999px;
  font-weight: 600;
}

.ps-cat-card .ps-cat-card-arrow {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .92);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .9rem;
  z-index: 3;
  transition: all .25s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .08);
}

.ps-cat-card:hover .ps-cat-card-arrow {
  background: var(--primary);
  color: #fff;
  transform: rotate(90deg);
}

.ps-cat-card.expanded .ps-cat-card-arrow {
  transform: rotate(-90deg);
  background: var(--primary);
  color: #fff;
}

/* 三级产品网格（5列） */
.ps-item-block {
  margin-top: 28px;
  background: #fff;
  border: 1px solid #e6ecf3;
  border-radius: 14px;
  padding: 24px;
  animation: psFadeIn .3s ease;
}

.ps-item-block-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px dashed #dbe6f1;
}

.ps-item-block-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark);
  display: flex;
  align-items: center;
  gap: 10px;
}

.ps-item-block-title::before {
  content: '';
  width: 4px;
  height: 18px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  border-radius: 2px;
}

.ps-item-block-count {
  font-size: .82rem;
  color: var(--gray-500);
}

.ps-item-block-close {
  background: transparent;
  border: 1px solid #d8e2ec;
  color: var(--gray-700);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: .82rem;
  cursor: pointer;
  transition: all .2s ease;
}

.ps-item-block-close:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(13, 75, 140, .05);
}

.ps-item-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.ps-item-card {
  background: #fff;
  border: 1px solid #e6ecf3;
  border-radius: 10px;
  overflow: hidden;
  transition: all .25s ease;
  cursor: pointer;
}

.ps-item-card:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: 0 10px 22px rgba(13, 75, 140, .12);
}

.ps-item-card-img {
  width: 100%;
  aspect-ratio: 1 / 1;
  background: linear-gradient(135deg, #f0f4f9 0%, #dde7f0 100%);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ps-item-card-img img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.ps-item-card-name {
  padding: 10px 12px;
  font-size: .88rem;
  font-weight: 600;
  color: var(--dark);
  text-align: center;
  border-top: 1px solid #eef3f8;
  background: #fff;
  position: relative;
  z-index: 2;
}

/* 辅材类特殊网格（7项 4列更紧凑） */
.ps-aux-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.ps-aux-card {
  background: #fff;
  border: 1px solid #e6ecf3;
  border-radius: 12px;
  overflow: hidden;
  transition: all .25s ease;
  cursor: pointer;
}

.ps-aux-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 26px rgba(13, 75, 140, .14);
  border-color: var(--primary);
}

.ps-aux-card-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, #eef3f8 0%, #dbe6f1 100%);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ps-aux-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(45deg, transparent 0 12px, rgba(13, 75, 140, .04) 12px 13px);
  pointer-events: none;
}

.ps-aux-card-img img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.ps-aux-card-name {
  padding: 12px 14px;
  font-size: .95rem;
  font-weight: 700;
  color: var(--dark);
  text-align: center;
  border-top: 1px solid #eef3f8;
  position: relative;
  z-index: 2;
}

/* 子分类快速切换（管材/配件/阀门 一级直接展示11个材质） */
.ps-material-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

/* 响应式 */
@media (max-width: 1024px) {
  .ps-cat-grid,
  .ps-material-grid,
  .ps-aux-grid { grid-template-columns: repeat(3, 1fr); }
  .ps-item-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 768px) {
  .ps-level1-tabs { gap: 8px; padding: 14px 12px; margin-top: 38px; }
  .ps-level1-tabs::before { font-size: .62rem; padding: 3px 12px; letter-spacing: 2px; }
  .ps-level1-tabs::after { display: none; }
  .ps-tab { padding: 10px 18px; font-size: .92rem; gap: 8px; }
  .ps-tab-num { display: none; }

  .ps-cat-grid,
  .ps-material-grid,
  .ps-aux-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .ps-item-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .ps-item-block { padding: 16px; }
  .ps-item-block-title { font-size: .95rem; }
}

@media (max-width: 480px) {
  .ps-cat-grid,
  .ps-material-grid,
  .ps-aux-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .ps-item-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ==================== Shop Page (购物商城) ==================== */

/* Hero Card */
.shop-hero-card {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 48px;
  align-items: center;
  margin-top: 48px;
  background: linear-gradient(135deg, #0a1929, #0d4b8c);
  border-radius: 20px;
  padding: 56px 48px;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.shop-hero-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0,153,212,0.25), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.shop-hero-left { position: relative; z-index: 1; }

.shop-platform-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 50px;
  padding: 8px 20px;
  margin-bottom: 24px;
}

.shop-platform-icon { font-size: 1.3rem; }

.shop-platform-name {
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.shop-hero-left h3 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: #fff;
}

.shop-hero-desc {
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.85);
  margin-bottom: 28px;
}

.shop-hero-features {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 36px;
}

.shop-feature-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.9);
}

.shop-feature-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: #fff;
  font-weight: 700;
}

.shop-enter-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, #ff6a00, #ee2200);
  color: #fff;
  padding: 16px 40px;
  border-radius: 50px;
  font-size: 1.1rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.25s, box-shadow 0.25s;
  box-shadow: 0 8px 30px rgba(255,106,0,0.4);
}

.shop-enter-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(255,106,0,0.55);
}

.shop-enter-arrow {
  font-size: 1.3rem;
  transition: transform 0.25s;
}

.shop-enter-btn:hover .shop-enter-arrow {
  transform: translateX(6px);
}

.shop-link-note {
  margin-top: 16px;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.55);
}

/* Hero Right Visual */
.shop-hero-right { position: relative; z-index: 1; }

.shop-visual {
  position: relative;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 16px;
  padding: 28px;
  backdrop-filter: blur(10px);
}

.shop-visual-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.shop-visual-item {
  position: relative;
  aspect-ratio: 1;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(0,153,212,0.3), rgba(13,75,140,0.5));
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255,255,255,0.1);
  transition: transform 0.25s, box-shadow 0.25s;
  overflow: hidden;
}

.shop-visual-item .shop-visual-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
  transition: transform 0.4s ease;
}

.shop-visual-item .shop-visual-overlay {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 35%;
  z-index: 2;
  background:
    linear-gradient(180deg, rgba(6, 16, 33, 0) 0%, rgba(6, 16, 33, 0.55) 35%, rgba(6, 16, 33, 0.92) 100%);
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.shop-visual-item:hover { transform: scale(1.05); box-shadow: 0 10px 30px rgba(0,153,212,0.3); }
.shop-visual-item:hover .shop-visual-img { transform: scale(1.08); }
.shop-visual-item:hover .shop-visual-overlay { background: linear-gradient(180deg, rgba(6, 16, 33, 0) 0%, rgba(6, 16, 33, 0.65) 35%, rgba(6, 16, 33, 0.96) 100%); }

.shop-visual-label {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 35%;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.45rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.12em;
  text-shadow: 0 2px 8px rgba(0,0,0,0.55), 0 1px 2px rgba(0,0,0,0.4);
  padding-bottom: 6px;
}
.shop-visual-label::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 8px;
  transform: translateX(-50%);
  width: 28px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(0, 153, 212, 0.7);
}

.shop-visual-tag {
  position: absolute;
  bottom: -14px;
  right: 20px;
  background: var(--accent);
  color: #fff;
  padding: 6px 20px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(0,153,212,0.4);
}

/* Category Cards */
.shop-cat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.shop-cat-card {
  background: #fff;
  border-radius: 16px;
  padding: 0 0 36px 0;
  text-align: center;
  text-decoration: none;
  color: var(--dark);
  transition: transform 0.25s, box-shadow 0.25s;
  border: 1px solid #eef3f8;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow: hidden;
}

.shop-cat-img {
  width: 100%;
  height: 200px;
  overflow: hidden;
  position: relative;
  margin-bottom: 24px;
}

.shop-cat-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(13,75,140,0) 60%, rgba(13,75,140,0.06) 100%);
  pointer-events: none;
}

.shop-cat-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.shop-cat-card:hover .shop-cat-img img {
  transform: scale(1.08);
}

.shop-cat-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(13,75,140,0.12);
  border-color: var(--primary);
}

.shop-cat-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 20px;
}

.shop-cat-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--dark);
}

.shop-cat-card p {
  font-size: 0.82rem;
  line-height: 1.6;
  color: #6b7a8d;
  margin-bottom: 18px;
  flex: 1;
}

.shop-cat-link {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.88rem;
  transition: gap 0.25s;
}

.shop-cat-card:hover .shop-cat-link { color: var(--accent); }

/* Responsive */
@media (max-width: 1024px) {
  .shop-hero-card { grid-template-columns: 1fr; gap: 32px; padding: 40px 32px; }
  .shop-cat-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .shop-hero-card { padding: 32px 20px; }
  .shop-hero-left h3 { font-size: 1.5rem; }
  .shop-hero-features { gap: 16px; }
  .shop-cat-grid { grid-template-columns: 1fr; }
  .shop-visual-grid { gap: 10px; }
}

/* ==================== Cases Page (合作案例) ==================== */
.cases-banner {
  /* 关键：彻底覆盖默认 page-banner-marquee 的 grid 布局，用 flex 让两个 cell 整齐排列 */
  display: flex;
  align-items: stretch;
  position: relative;
  overflow: hidden;
}
.cases-banner .page-banner-text {
  /* 强制让文字区作为左 30%（432px）的固定宽度色块，浮在 banner 左侧 */
  position: absolute;
  left: 0;
  top: 0;
  width: 432px;
  height: 100%;
  z-index: 3;
  background: linear-gradient(135deg, #0a1929 0%, #0d4b8c 70%, #0099d4 100%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 0 48px;
  min-width: 0;
  max-width: none;
  transform: none;
}
.cases-banner .banner-marquee {
  /* 走马灯在文字区右侧 432px~1440 */
  position: relative;
  margin-left: 432px;
  flex: 1;
  height: 100%;
  min-height: 360px;
  grid-column: auto;  /* 覆盖默认的 grid-column: 2 */
}
.cases-banner .banner-marquee-track {
  align-items: center;
}
.cases-banner .page-banner-text h1 {
  font-size: 2.6rem;
  letter-spacing: 4px;
  white-space: nowrap;
}
/* 左下角装饰光晕，与原版气质一致 */
.cases-banner .page-banner-text::before {
  content: '';
  position: absolute;
  bottom: -60px; left: -40px;
  width: 220px; height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,212,255,0.28), transparent 70%);
  pointer-events: none;
}
.cases-banner .page-banner-text::after {
  content: '';
  position: absolute;
  top: -50px; right: -30px;
  width: 180px; height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.10), transparent 70%);
  pointer-events: none;
}

/* 行业案例 */
.cases-industry-section {
  padding: 80px 0;
  background: linear-gradient(180deg, #fff 0%, #f6f9fc 100%);
}

/* 6 行业赋能卡片网格 */
.industry-empower-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 56px;
}

.empower-card {
  position: relative;
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 28px rgba(13, 75, 140, 0.08);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid rgba(13, 75, 140, 0.06);
  display: flex;
  flex-direction: column;
}
.empower-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 18px 50px rgba(13, 75, 140, 0.18);
  border-color: var(--accent);
}

.empower-img {
  position: relative;
  width: 100%;
  aspect-ratio: 16/10;
  overflow: hidden;
  background: linear-gradient(135deg, #f0f5fa 0%, #e1ebf5 100%);
  flex-shrink: 0;
}
.empower-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s ease;
}
.empower-card:hover .empower-img img { transform: scale(1.08); }
.empower-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(6, 16, 33, 0.55) 100%);
  pointer-events: none;
}

.empower-info {
  padding: 24px 26px 28px;
  position: relative;
}
.empower-num {
  position: absolute;
  top: -28px;
  right: 24px;
  font-size: 3.2rem;
  font-weight: 900;
  color: var(--accent);
  opacity: 0.18;
  line-height: 1;
  font-family: "Georgia", serif;
  font-style: italic;
}
.empower-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
  position: relative;
  z-index: 1;
}
.empower-desc {
  color: var(--gray-600);
  font-size: 0.92rem;
  line-height: 1.6;
  margin-bottom: 14px;
}
.empower-tag {
  display: inline-block;
  background: linear-gradient(135deg, rgba(13, 75, 140, 0.08), rgba(0, 153, 212, 0.12));
  color: var(--primary);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  border: 1px solid rgba(13, 75, 140, 0.12);
}

/* 6 个 4+2 布局：第 1 张大卡 + 后面 5 张小卡（2 行） */

.industry-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 40px 0 32px;
  justify-content: center;
}
.industry-tab {
  padding: 10px 22px;
  background: #fff;
  color: var(--gray-700);
  border: 1.5px solid var(--gray-200);
  border-radius: 24px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.25s;
  font-family: inherit;
}
.industry-tab:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.industry-tab.active {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  border-color: var(--primary);
}

.industry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.industry-card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 18px rgba(0,0,0,0.06);
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
}
.industry-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(13,75,140,0.15);
}
.industry-card-img {
  position: relative;
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, #f0f5fb 0%, #d6e6f5 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--gray-100);
}
.industry-card-placeholder {
  color: var(--gray-400);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 10px 18px;
  background: rgba(255,255,255,0.7);
  border: 2px dashed var(--gray-300);
  border-radius: 8px;
}
.industry-card-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--primary);
  color: #fff;
  padding: 4px 12px;
  border-radius: 14px;
  font-size: 0.8rem;
  font-weight: 600;
}
.industry-card-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(255,255,255,0.95);
  color: var(--primary);
  padding: 4px 12px;
  border-radius: 14px;
  font-size: 0.8rem;
  font-weight: 600;
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
}
.industry-card-body {
  padding: 20px 22px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.industry-card-body h3 {
  font-size: 1.1rem;
  color: var(--dark);
  margin-bottom: 12px;
  line-height: 1.5;
  font-weight: 700;
}
.industry-card-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--gray-100);
}
.meta-item {
  color: var(--gray-600);
  font-size: 0.85rem;
}
.industry-card-desc {
  color: var(--gray-700);
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: 14px;
  flex: 1;
}
.industry-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.industry-tag {
  background: #eaf2fb;
  color: var(--primary);
  padding: 3px 10px;
  border-radius: 10px;
  font-size: 0.78rem;
  font-weight: 500;
}

/* 外贸出口 */
.cases-trade-section {
  position: relative;
  padding: 80px 0;
  background: linear-gradient(180deg, #f6f9fc 0%, #fff 100%);
  overflow: hidden;
}
.trade-section-bg {
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: radial-gradient(circle at 80% 30%, rgba(0,153,212,0.08), transparent 60%);
  pointer-events: none;
}
.trade-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin: 48px 0;
}
.trade-stat {
  text-align: center;
  padding: 28px 16px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(13,75,140,0.15);
}
.trade-stat-desc {
  font-size: 0.95rem;
  opacity: 0.85;
  letter-spacing: 0.15em;
  margin-bottom: 6px;
}
.trade-stat-text {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  font-family: "Microsoft YaHei", sans-serif;
}
.trade-regions {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.trade-region {
  background: #fff;
  padding: 28px 24px;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.05);
  border-top: 4px solid var(--accent);
  transition: all 0.3s;
}
.trade-region:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(13,75,140,0.12);
}
.trade-region-icon {
  font-size: 2.2rem;
  margin-bottom: 12px;
  line-height: 1;
}
.trade-region h3 {
  font-size: 1.25rem;
  color: var(--dark);
  margin-bottom: 8px;
  font-weight: 700;
}
.trade-region > p {
  color: var(--gray-600);
  font-size: 0.9rem;
  margin-bottom: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--gray-100);
}
.trade-projects {
  list-style: none;
  padding: 0;
  margin: 0;
}
.trade-projects li {
  position: relative;
  padding-left: 18px;
  color: var(--gray-700);
  font-size: 0.88rem;
  line-height: 1.6;
  margin-bottom: 8px;
}
.trade-projects li::before {
  content: "▸";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
  font-weight: bold;
}

/* 出口项目卡片网格 */
.export-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 56px;
}

.export-card {
  position: relative;
  background: #fff;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 6px 22px rgba(13, 75, 140, 0.07);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid rgba(13, 75, 140, 0.05);
}
.export-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(13, 75, 140, 0.16);
  border-color: var(--accent);
}

.export-img {
  position: relative;
  width: 100%;
  aspect-ratio: 16/10;
  overflow: hidden;
  background: linear-gradient(135deg, #f0f5fa, #e1ebf5);
}
.export-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.export-card:hover .export-img img { transform: scale(1.06); }
.export-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(6, 16, 33, 0.45) 100%);
  pointer-events: none;
}

.export-info {
  padding: 22px 24px 26px;
}
.export-name {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 6px;
  letter-spacing: 0.02em;
  position: relative;
  padding-left: 14px;
}
.export-name::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  background: linear-gradient(180deg, var(--accent), var(--primary));
  border-radius: 2px;
}
.export-loc {
  color: var(--gray-600);
  font-size: 0.9rem;
  letter-spacing: 0.02em;
}

/* 合作品牌 */
.cases-brands-section { padding: 80px 0; background: #fff; }
.brands-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
  margin-top: 48px;
}
.brand-item {
  background: #fff;
  border: 1.5px solid var(--gray-100);
  border-radius: 12px;
  padding: 24px 16px;
  text-align: center;
  transition: all 0.3s;
  cursor: pointer;
}
.brand-item:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: 0 8px 22px rgba(13,75,140,0.10);
}
.brand-logo {
  width: 100%;
  aspect-ratio: 1;
  max-width: 110px;
  margin: 0 auto 14px;
  background: var(--white);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  transition: all 0.3s;
}
.brand-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.brand-item:hover .brand-logo {
  background: var(--accent-light);
  transform: scale(1.05);
}
.brand-placeholder {
  color: var(--gray-400);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 1px;
}
.brand-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 4px;
}
.brand-desc {
  font-size: 0.82rem;
  color: var(--gray-600);
}
.brand-note {
  text-align: center;
  margin-top: 32px;
  color: var(--gray-500);
  font-size: 0.92rem;
  font-style: italic;
}

/* Responsive */
@media (max-width: 1024px) {
  .industry-grid { grid-template-columns: repeat(2, 1fr); }
  .trade-regions { grid-template-columns: repeat(2, 1fr); }
  .brands-grid { grid-template-columns: repeat(4, 1fr); }
  .trade-stats { grid-template-columns: repeat(4, 1fr); gap: 12px; }
  .trade-stat-num { font-size: 1.8rem; }
}
@media (max-width: 768px) {
  .industry-grid { grid-template-columns: 1fr; }
  .trade-regions { grid-template-columns: 1fr; }
  .brands-grid { grid-template-columns: repeat(3, 1fr); }
  .trade-stats { grid-template-columns: repeat(2, 1fr); }
  .industry-tabs { gap: 6px; }
  .industry-tab { padding: 8px 16px; font-size: 0.88rem; }
  .cases-banner { min-height: 240px; }
}
@media (max-width: 480px) {
  .brands-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .trade-stat-num { font-size: 1.6rem; }
  .trade-stat { padding: 20px 10px; }
}