/* ============================================================
   湾特电气 — 全站样式 (Enhanced Design)
   主题：科技星光银灰 · 冷银通透 · 轻拟态质感
   ============================================================ */

/* ── 设计令牌 ── */
:root {
  color-scheme: light;

  /* 深色文字/边框基底（保留命名，便于全站渐进替换） */
  --navy-950: #0b1220;
  --navy-900: #0f1a2d;
  --navy-800: #13233c;
  --navy-700: #1a2f4f;
  --navy-600: #244069;
  --navy-500: #2f5386;

  /* 科技冷光强调色（替换原金铜色系） */
  --gold-500: #3aa9ff;   /* primary accent */
  --gold-400: #61c3ff;
  --gold-300: #8be2ff;
  --gold-200: #c6f3ff;
  --gold-glow: rgba(58, 169, 255, 0.22);

  /* 科技银灰背景层次 */
  --silver-0: #ffffff;
  --silver-25: #fbfcfe;
  --silver-50: #f6f8fc;
  --silver-100: #eef3f9;
  --silver-200: #e6edf6;
  --silver-300: #d8e2ef;

  /* 玻璃拟态边框 */
  --glass-border: rgba(15, 23, 42, 0.10);

  /* 中性色 */
  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;

  /* 背景层次 */
  --bg-base:    radial-gradient(1200px 700px at 10% 0%, rgba(97,195,255,0.16), transparent 55%),
                radial-gradient(900px 600px at 90% 15%, rgba(58,169,255,0.12), transparent 60%),
                linear-gradient(180deg, var(--silver-25) 0%, var(--silver-50) 40%, var(--silver-100) 100%);
  --bg-soft:    linear-gradient(180deg, var(--silver-50) 0%, var(--silver-100) 100%);
  --bg-muted:   linear-gradient(180deg, var(--silver-100) 0%, var(--silver-200) 100%);

  /* 阴影 */
  --shadow-xs:   0 1px 3px rgba(9,18,40,0.08),  0 1px 2px rgba(9,18,40,0.05);
  --shadow-sm:   0 4px 12px rgba(9,18,40,0.10),  0 2px 4px  rgba(9,18,40,0.06);
  --shadow-md:   0 10px 28px rgba(9,18,40,0.12), 0 4px 10px rgba(9,18,40,0.07);
  --shadow-lg:   0 20px 48px rgba(9,18,40,0.14), 0 8px 20px rgba(9,18,40,0.08);
  --shadow-gold: 0 10px 28px rgba(58,169,255,0.22);

  /* 圆角 */
  --radius-xl:  28px;
  --radius-lg:  20px;
  --radius-md:  14px;
  --radius-sm:  10px;
  --radius-xs:  7px;

  /* 动效 */
  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-std:  cubic-bezier(0.4, 0, 0.2, 1);

  /* 布局 */
  --container: 1200px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family:
    "Source Han Sans SC", "Noto Sans SC", "Noto Sans",
    "PingFang SC", "Microsoft YaHei", "Heiti SC",
    "Segoe UI", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--slate-800);
  background: var(--bg-base);
  -webkit-font-smoothing: antialiased;
}

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

/* ── 工具类 ── */
.container {
  width: min(var(--container), 92vw);
  margin: 0 auto;
}

.section {
  padding: 100px 0;
  position: relative;
}

.section-alt {
  background: var(--bg-soft);
}

.section-dark {
  background: linear-gradient(160deg, var(--navy-900) 0%, var(--navy-800) 100%);
  color: #fff;
}

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: linear-gradient(135deg, rgba(58,169,255,0.16), rgba(139,226,255,0.10));
  color: #0b3a63;
  border: 1px solid rgba(58,169,255,0.28);
  border-radius: 999px;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.5px;
}

/* 标题块 */
.section-title {
  font-family:
    "Source Han Serif SC", "Noto Serif SC", "Noto Serif",
    "Songti SC", "STSong", "SimSun", serif;
  font-size: clamp(26px, 3vw, 40px);
  font-weight: 700;
  margin: 0 0 14px;
  letter-spacing: 0.5px;
  line-height: 1.3;
  color: var(--slate-900);
}

.section-dark .section-title { color: #fff; }

.section-lead {
  color: var(--slate-600);
  max-width: 680px;
  margin: 0 0 44px;
  font-size: 16px;
  line-height: 1.8;
}

.section-dark .section-lead { color: rgba(255,255,255,0.72); }

/* ── 按钮 ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform 0.22s var(--ease-out), box-shadow 0.22s var(--ease-out), background 0.2s, color 0.2s;
  letter-spacing: 0.3px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold-400) 0%, var(--gold-500) 100%);
  color: #071827;
  box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(58,169,255,0.34);
}

.btn-outline {
  border-color: rgba(255,255,255,0.50);
  color: #fff;
  background: rgba(255,255,255,0.07);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  transform: translateY(-2px);
}

.btn-navy {
  background: var(--navy-700);
  color: #fff;
}

.btn-navy:hover {
  background: var(--navy-600);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ──────────────────────────────
   顶部导航
────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  transition: box-shadow 0.3s var(--ease-std);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.72);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--glass-border);
  transition: background 0.3s;
}

.site-header.scrolled::before {
  background: rgba(255,255,255,0.88);
}

.site-header.scrolled {
  box-shadow: 0 10px 30px rgba(15,23,42,0.12);
}

.nav {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 82px;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--slate-900);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.4px;
  flex-shrink: 0;
  z-index: 1;
}

.brand img {
  height: 50px;
  width: auto;
  filter: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  font-weight: 600;
  font-size: 14.5px;
  z-index: 1;
}

.nav-links a {
  position: relative;
  color: rgba(15,23,42,0.78);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: color 0.18s, background 0.18s;
  letter-spacing: 0.3px;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 4px;
  height: 2px;
  background: var(--gold-400);
  border-radius: 999px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s var(--ease-out);
}

.nav-links a:hover {
  color: var(--slate-900);
  background: rgba(58,169,255,0.10);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  transform: scaleX(1);
}

.nav-links a.active { color: var(--slate-900); }

.nav-cta {
  display: flex;
  align-items: center;
  gap: 14px;
  color: rgba(15,23,42,0.72);
  font-weight: 600;
  font-size: 13.5px;
  flex-shrink: 0;
  z-index: 1;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 1;
}

.lang-dropdown { position: relative; }

.lang-toggle {
  border: 1px solid rgba(15,23,42,0.14);
  background: rgba(255,255,255,0.65);
  color: rgba(15,23,42,0.86);
  font-size: 12.5px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 999px;
  cursor: pointer;
  min-width: 80px;
  text-align: center;
  transition: background 0.18s, border-color 0.18s;
  letter-spacing: 0.3px;
}

.lang-toggle:hover {
  background: rgba(255,255,255,0.82);
  border-color: rgba(58,169,255,0.30);
}

.lang-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 12px);
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 10px;
  min-width: 144px;
  background: rgba(255,255,255,0.92);
  border-radius: var(--radius-md);
  border: 1px solid rgba(15,23,42,0.10);
  box-shadow: 0 20px 40px rgba(15,23,42,0.14);
  z-index: 20;
}

.lang-menu.open { display: flex; }

.lang-option {
  border: none;
  background: transparent;
  color: rgba(15,23,42,0.76);
  font-size: 13px;
  font-weight: 600;
  padding: 7px 12px;
  border-radius: var(--radius-xs);
  text-align: left;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.lang-option.active,
.lang-option:hover {
  background: rgba(58,169,255,0.12);
  color: var(--slate-900);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-xs);
  border: 1px solid rgba(255,255,255,0.28);
  background: rgba(255,255,255,0.08);
  color: #fff;
  align-items: center;
  justify-content: center;
  gap: 5px;
  flex-direction: column;
  cursor: pointer;
  z-index: 1;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: #fff;
  border-radius: 99px;
  display: block;
}

/* ──────────────────────────────
   Hero
────────────────────────────── */
.hero {
  min-height: 92vh;
  position: relative;
  color: #fff;
  display: grid;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(180deg, var(--silver-25) 0%, var(--silver-100) 100%);
}

.hero-slideshow {
  position: absolute;
  inset: 0;
  display: flex;
  width: 300%;
  height: 100%;
  z-index: 0;
  transition: transform 0.95s var(--ease-out);
}

.hero-slide { flex: 0 0 33.333%; height: 100%; }

.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(900px 520px at 15% 5%, rgba(97,195,255,0.28), transparent 60%),
    radial-gradient(900px 520px at 85% 20%, rgba(58,169,255,0.20), transparent 62%),
    linear-gradient(105deg, rgba(255,255,255,0.70) 0%, rgba(255,255,255,0.32) 55%, rgba(255,255,255,0.18) 100%);
  z-index: 1;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(255,255,255,0.85) 1px, transparent 1px),
    radial-gradient(circle, rgba(97,195,255,0.35) 1px, transparent 1px);
  background-size: 34px 34px, 58px 58px;
  background-position: 0 0, 18px 22px;
  opacity: 0.45;
  z-index: 1;
  pointer-events: none;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 130px 0 120px;
}

.hero-content .tag {
  background: rgba(255,255,255,0.70);
  border-color: rgba(58,169,255,0.30);
  color: rgba(11,58,99,0.95);
  margin-bottom: 24px;
}

.hero-title {
  font-family: "Source Han Serif SC", "Noto Serif SC", "Noto Serif", "Songti SC", "STSong", "SimSun", serif;
  font-size: clamp(34px, 4.5vw, 58px);
  font-weight: 700;
  margin: 0 0 18px;
  letter-spacing: 1.5px;
  line-height: 1.25;
  color: rgba(15,23,42,0.94);
  text-shadow: 0 10px 30px rgba(15,23,42,0.10);
}

.hero-subtitle {
  font-size: clamp(15px, 1.7vw, 18px);
  max-width: 640px;
  color: rgba(15,23,42,0.72);
  margin: 0 0 32px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-pill {
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.62);
  border: 1px solid rgba(15,23,42,0.10);
  font-weight: 600;
  font-size: 13.5px;
  color: rgba(15,23,42,0.78);
  transition: background 0.18s;
}

.hero-pill:hover {
  background: rgba(255,255,255,0.80);
}

.hero-controls {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  z-index: 2;
  pointer-events: none;
}

.hero-btn {
  pointer-events: auto;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(9,18,40,0.55);
  border: 1px solid rgba(255,255,255,0.30);
  color: #fff;
  font-size: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s, background 0.2s;
}

.hero-btn:hover {
  transform: translateY(-2px);
  background: rgba(9,18,40,0.80);
}

.hero-indicators {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 2;
}

.hero-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,0.30);
  cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s, width 0.3s;
}

.hero-indicator.active {
  background: var(--gold-400);
  box-shadow: 0 0 0 4px rgba(201,149,42,0.22);
  width: 28px;
  border-radius: 999px;
}

/* 首页 hero 样式：让背景更通透 */
.home-page .hero::before {
  background: linear-gradient(105deg, rgba(6,14,28,0.78) 0%, rgba(9,22,44,0.45) 55%, rgba(15,37,64,0.22) 100%);
}

/* About 页：顶部文案需要“背景暗、字更亮” */
.about-page .hero {
  color: #fff;
}

.about-page .hero::before {
  background:
    radial-gradient(900px 520px at 15% 5%, rgba(58,169,255,0.18), transparent 62%),
    radial-gradient(900px 520px at 85% 20%, rgba(97,195,255,0.14), transparent 64%),
    linear-gradient(105deg, rgba(7,15,25,0.86) 0%, rgba(7,15,25,0.72) 55%, rgba(7,15,25,0.56) 100%);
}

.about-page .hero::after {
  opacity: 0.25;
}

.about-page .hero-content {
  /* 覆盖层已全屏铺开，这里保持内容区透明 */
  background: transparent;
  border: none;
  box-shadow: none;
  border-radius: 0;
  padding: 130px 0 120px;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.about-page .hero-title {
  color: rgba(255,255,255,0.96);
  text-shadow: 0 14px 34px rgba(0,0,0,0.35);
}

.about-page .hero-subtitle {
  color: rgba(255,255,255,0.82);
}

/* Products / Solutions / Honors / News / Contact 页：顶部 Hero 高度与叠加层统一 */
.products-page .hero,
.solutions-page .hero,
.honors-page .hero,
.news-page .hero,
.contact-page .hero {
  color: #fff;
}

.products-page .hero::before,
.solutions-page .hero::before,
.honors-page .hero::before,
.news-page .hero::before,
.contact-page .hero::before {
  background:
    radial-gradient(900px 520px at 15% 5%, rgba(58,169,255,0.14), transparent 62%),
    radial-gradient(900px 520px at 85% 20%, rgba(97,195,255,0.10), transparent 64%),
    linear-gradient(105deg, rgba(7,15,25,0.82) 0%, rgba(7,15,25,0.68) 55%, rgba(7,15,25,0.52) 100%);
}

.products-page .hero::after,
.solutions-page .hero::after,
.honors-page .hero::after,
.news-page .hero::after,
.contact-page .hero::after {
  opacity: 0.22;
}

.products-page .hero-content .tag,
.solutions-page .hero-content .tag,
.honors-page .hero-content .tag,
.news-page .hero-content .tag,
.contact-page .hero-content .tag {
  background: rgba(255,255,255,0.18);
  border-color: rgba(255,255,255,0.28);
  color: rgba(255,255,255,0.95);
}

.products-page .hero-title,
.solutions-page .hero-title,
.honors-page .hero-title,
.news-page .hero-title,
.contact-page .hero-title {
  color: rgba(255,255,255,0.96);
  text-shadow: 0 12px 32px rgba(0,0,0,0.35);
}

.products-page .hero-subtitle,
.solutions-page .hero-subtitle,
.honors-page .hero-subtitle,
.news-page .hero-subtitle,
.contact-page .hero-subtitle {
  color: rgba(255,255,255,0.85);
}

.products-page .hero-content,
.solutions-page .hero-content,
.honors-page .hero-content,
.news-page .hero-content,
.contact-page .hero-content {
  padding: 60px 0 50px;
}

/* ──────────────────────────────
   统计数字
────────────────────────────── */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.stat {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: transform 0.22s var(--ease-out), box-shadow 0.22s var(--ease-out);
}

.stat::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold-500), var(--gold-300));
}

.stat:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.stat strong {
  display: block;
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 6px;
  color: var(--navy-700);
  line-height: 1.1;
}

.stat span {
  color: var(--slate-500);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

/* ──────────────────────────────
   通用卡片
────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.card {
  background: #fff;
  padding: 28px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(15,37,64,0.06);
  transition: transform 0.22s var(--ease-out), box-shadow 0.22s var(--ease-out);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--gold-400), var(--navy-700));
  opacity: 0;
  transition: opacity 0.22s;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.card:hover::before { opacity: 1; }

.card h3 {
  margin: 0 0 10px;
  font-size: 19px;
  color: var(--navy-800);
  font-weight: 700;
}

.card p {
  color: var(--slate-600);
  margin: 0;
  line-height: 1.75;
}

/* ──────────────────────────────
   图文分列
────────────────────────────── */
.split {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  align-items: center;
  gap: 52px;
}

.media-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}

.media-frame:hover img { transform: scale(1.03); }

/* ──────────────────────────────
   产品详情（图文块）
────────────────────────────── */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 48px;
  margin-bottom: 72px;
}

.product-detail:last-of-type {
  margin-bottom: 0;
}

.product-detail-reverse {
  grid-template-columns: 1fr 1fr;
}

.product-detail-reverse .product-detail-media {
  order: 2;
}

.product-detail-reverse .product-detail-content {
  order: 1;
}

.product-detail-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.product-detail-media img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.product-detail-title {
  margin: 0 0 8px;
  font-size: 22px;
  font-weight: 700;
  color: var(--navy-800);
}

.product-detail-series {
  margin: 0 0 20px;
  font-size: 14px;
  color: var(--slate-500);
  font-weight: 600;
}

.product-detail-content h4 {
  margin: 18px 0 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--navy-700);
}

.product-detail-content h4:first-of-type {
  margin-top: 0;
}

.product-detail-content p {
  margin: 0 0 12px;
  color: var(--slate-600);
  font-size: 15px;
  line-height: 1.8;
}

.product-specs {
  margin: 0;
  padding-left: 20px;
  color: var(--slate-600);
  font-size: 15px;
  line-height: 1.9;
}

.product-specs li {
  margin-bottom: 6px;
}

@media (max-width: 720px) {
  .product-detail,
  .product-detail-reverse {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 48px;
  }

  .product-detail-reverse .product-detail-media,
  .product-detail-reverse .product-detail-content {
    order: unset;
  }
}

.media-frame::after {
  content: "";
  position: absolute;
  bottom: -12px; right: -12px;
  width: 55%;
  height: 55%;
  border: 3px solid rgba(201,149,42,0.28);
  border-radius: var(--radius-md);
  pointer-events: none;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.badge {
  background: rgba(22,53,88,0.08);
  color: var(--navy-700);
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  border: 1px solid rgba(22,53,88,0.12);
  transition: background 0.18s;
}

.badge:hover { background: rgba(22,53,88,0.14); }

/* ──────────────────────────────
   流程步骤
────────────────────────────── */
.process {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 22px;
}

.process-step {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 26px;
  box-shadow: var(--shadow-sm);
  border-top: 3px solid var(--navy-700);
  transition: transform 0.22s var(--ease-out), box-shadow 0.22s;
}

.process-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.process-step span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--navy-700), var(--navy-600));
  color: #fff;
  font-weight: 800;
  font-size: 13px;
  margin-bottom: 14px;
}

.process-step h4 {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--navy-800);
  font-weight: 700;
}

.process-step p {
  margin: 0;
  color: var(--slate-600);
  font-size: 14.5px;
  line-height: 1.7;
}

/* ──────────────────────────────
   CTA Banner
────────────────────────────── */
.cta-banner {
  border-radius: var(--radius-xl);
  background: linear-gradient(130deg, var(--navy-900) 0%, var(--navy-700) 55%, var(--navy-800) 100%);
  color: #fff;
  padding: 54px 52px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
  align-items: center;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: "";
  position: absolute;
  top: -60px; right: -60px;
  width: 260px; height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201,149,42,0.20) 0%, transparent 70%);
  pointer-events: none;
}

.cta-banner::after {
  content: "";
  position: absolute;
  bottom: -80px; left: -40px;
  width: 200px; height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(31,74,121,0.4) 0%, transparent 70%);
  pointer-events: none;
}

.cta-banner p {
  color: rgba(255,255,255,0.72);
  margin: 0;
  position: relative;
  z-index: 1;
}

.cta-banner .section-title,
.cta-banner .btn { position: relative; z-index: 1; }

.cta-banner .section-title {
  color: #fff;
}

/* ──────────────────────────────
   新闻列表
────────────────────────────── */
.news-list { display: grid; gap: 18px; }

.news-item {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 22px 26px;
  display: grid;
  gap: 6px;
  box-shadow: var(--shadow-xs);
  border: 1px solid var(--slate-200);
  border-left: 4px solid var(--navy-700);
  transition: transform 0.2s var(--ease-out), box-shadow 0.2s, border-left-color 0.2s;
}

.news-item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
  border-left-color: var(--gold-400);
}

.news-item span {
  color: var(--slate-400);
  font-size: 12.5px;
  letter-spacing: 0.3px;
  font-weight: 600;
}

.news-item h4 {
  margin: 0;
  font-size: 17px;
  color: var(--slate-900);
  font-weight: 700;
  line-height: 1.4;
}

/* ──────────────────────────────
   合作伙伴轮播
────────────────────────────── */
.partners-carousel {
  position: relative;
  display: flex;
  align-items: center;
  gap: 16px;
}

.partners-carousel.full-bleed {
  width: 100vw;
  margin-left: calc(50% - 50vw);
  padding: 0;
}

.partners-viewport {
  width: 100%;
  overflow: hidden;
  padding: 10px 0;
  scroll-behavior: smooth;
  cursor: grab;
  user-select: none;
  touch-action: pan-x;
}

.partners-viewport.is-dragging { cursor: grabbing; }

.partners-track {
  display: flex;
  align-items: center;
  gap: 22px;
  will-change: transform;
}

.partner-logo {
  flex: 0 0 auto;
  width: clamp(200px, 16vw, 300px);
  height: 140px;
  background: #fff;
  border: 1px solid rgba(15,37,64,0.08);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px 22px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.22s var(--ease-out), box-shadow 0.22s;
}

.partner-logo:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.partner-logo img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  opacity: 0.85;
  pointer-events: none;
  transition: opacity 0.18s;
}

.partner-logo:hover img { opacity: 1; }

.partners-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(15,37,64,0.14);
  background: rgba(255,255,255,0.95);
  color: var(--navy-800);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  z-index: 2;
  transition: box-shadow 0.2s, transform 0.2s;
}

.partners-btn:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(calc(-50% - 2px));
}

.partners-btn.prev { left: -12px; }
.partners-btn.next { right: -12px; }

/* ──────────────────────────────
   相册
────────────────────────────── */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

/* 荣誉页：8列×5行，左右铺满，延迟渲染优化 */
.honors-gallery-full {
  width: 100vw;
  margin-left: calc(50% - 50vw);
  padding: 0 20px;
  box-sizing: border-box;
  content-visibility: auto;
  contain-intrinsic-size: auto 600px;
}

.gallery-grid-8x5 {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 14px;
  max-width: 1400px;
  margin: 0 auto;
}

.gallery-grid-8x5 .gallery-item {
  aspect-ratio: 3 / 4;
}

@media (max-width: 1200px) {
  .gallery-grid-8x5 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .gallery-grid-8x5 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .honors-gallery-full {
    padding: 0 12px;
  }
}

.gallery-item {
  background: #fff;
  border-radius: var(--radius-sm);
  padding: 12px;
  box-shadow: var(--shadow-xs);
  border: 1px solid var(--slate-200);
  transition: transform 0.22s var(--ease-out), box-shadow 0.22s;
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.gallery-item:hover {
  transform: scale(1.025);
  box-shadow: var(--shadow-md);
}

.gallery-item img {
  border-radius: var(--radius-xs);
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ──────────────────────────────
   案例网格
────────────────────────────── */
.cases-grid-wrapper { display: grid; gap: 26px; }

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.case-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(15,37,64,0.05);
  display: flex;
  flex-direction: column;
  transition: transform 0.22s var(--ease-out), box-shadow 0.22s;
}

.case-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.case-media {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.case-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease-out);
}

.case-card:hover .case-media img { transform: scale(1.06); }

.case-title {
  padding: 12px 14px 14px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--slate-600);
  text-align: center;
  border-top: 1px solid rgba(15,37,64,0.06);
  background: #fafbfd;
}

.cases-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.cases-page-btn {
  border: 1.5px solid rgba(15,37,64,0.14);
  background: #fff;
  border-radius: 999px;
  padding: 8px 18px;
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  color: var(--navy-700);
  transition: background 0.18s, border-color 0.18s;
}

.cases-page-btn:hover:not([disabled]) {
  background: var(--bg-soft);
  border-color: var(--navy-700);
}

.cases-page-btn[disabled] { opacity: 0.4; cursor: not-allowed; }

.cases-page-numbers {
  display: flex;
  align-items: center;
  gap: 8px;
}

.cases-page-number {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1.5px solid rgba(15,37,64,0.14);
  background: #fff;
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  color: var(--navy-700);
  transition: background 0.18s, border-color 0.18s;
}

.cases-page-number:hover:not(.active) {
  background: var(--bg-soft);
  border-color: var(--navy-700);
}

.cases-page-number.active {
  background: linear-gradient(135deg, var(--gold-400), var(--gold-500));
  border-color: transparent;
  color: #1a0e00;
  box-shadow: var(--shadow-gold);
}

/* ──────────────────────────────
   联系页
────────────────────────────── */
.contact-lead {
  margin-bottom: 48px !important;
}

.contact-addresses {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px 40px;
  max-width: 900px;
  margin: 0 auto 48px;
}

@media (max-width: 640px) {
  .contact-addresses {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 36px;
  }
}

.contact-address-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 28px 24px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--slate-200);
  box-shadow: var(--shadow-xs);
  transition: border-color 0.22s, box-shadow 0.22s, transform 0.22s var(--ease-out);
  position: relative;
  overflow: hidden;
}

.contact-address-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--gold-400), var(--gold-500));
  opacity: 0.9;
}

.contact-address-item:hover {
  border-color: rgba(58, 169, 255, 0.35);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.contact-address-label {
  font-family:
    "Source Han Serif SC", "Noto Serif SC", "Songti SC", serif;
  font-size: 15px;
  font-weight: 700;
  color: var(--navy-800);
  letter-spacing: 0.3px;
}

.contact-address-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate-600);
  letter-spacing: 0.2px;
}

.contact-quick-info {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 32px 48px;
  padding: 24px 32px;
  background: linear-gradient(135deg, rgba(58, 169, 255, 0.08), rgba(139, 226, 255, 0.05));
  border-radius: var(--radius-md);
  border: 1px solid rgba(58, 169, 255, 0.2);
}

.contact-quick-item {
  font-size: 15px;
  color: var(--slate-700);
}

.contact-quick-item strong {
  color: var(--navy-700);
  font-weight: 700;
  margin-right: 8px;
}

.form { display: grid; gap: 14px; }

.form input,
.form textarea {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--slate-200);
  font-family: inherit;
  font-size: 14.5px;
  color: var(--slate-800);
  background: #fff;
  transition: border-color 0.18s, box-shadow 0.18s;
  outline: none;
}

.form input:focus,
.form textarea:focus {
  border-color: var(--navy-600);
  box-shadow: 0 0 0 3px rgba(22,53,88,0.10);
}

.form textarea { resize: vertical; min-height: 130px; }

/* ──────────────────────────────
   页脚
────────────────────────────── */
.site-footer {
  background:
    radial-gradient(900px 520px at 10% 10%, rgba(97,195,255,0.18), transparent 62%),
    radial-gradient(900px 520px at 90% 0%, rgba(58,169,255,0.14), transparent 60%),
    linear-gradient(180deg, var(--silver-50) 0%, var(--silver-200) 100%);
  color: rgba(15,23,42,0.76);
  padding: 68px 0 42px;
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -100px; right: -100px;
  width: 380px; height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(58,169,255,0.18) 0%, transparent 70%);
  pointer-events: none;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 60px;
  position: relative;
}

.footer-brand-logo {
  margin-top: 14px;
  height: 42px;
  width: auto;
  object-fit: contain;
  opacity: 0.95;
}

.footer-social-icons {
  display: flex;
  gap: 40px;
  margin-top: 14px;
  align-items: center;
}

.footer-social-icon {
  position: relative;
  display: inline-block;
  line-height: 0;
}

.footer-social-icon img {
  width: 32px;
  height: 32px;
  object-fit: contain;
  opacity: 0.9;
  transition: opacity 0.2s;
}

.footer-social-icon:hover img {
  opacity: 1;
}

.footer-social-popover {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 10px);
  transform: translateX(-50%);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
  z-index: 100;
  pointer-events: none;
}

.footer-social-popover::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -6px;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--silver-0);
}

.footer-social-icon:hover .footer-social-popover {
  opacity: 1;
  visibility: visible;
}

.footer-social-popover img {
  display: block;
  width: auto;
  height: auto;
  max-width: none;
  object-fit: none;
  background: var(--silver-0);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  padding: 6px;
}

.footer-grid h4 {
  margin: 0 0 18px;
  color: rgba(15,23,42,0.92);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.5px;
  position: relative;
  padding-bottom: 12px;
}

.footer-grid h4::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 28px; height: 2px;
  background: var(--gold-400);
  border-radius: 999px;
}

.footer-grid p,
.footer-grid a {
  font-size: 13.5px;
  line-height: 2.0;
  color: rgba(15,23,42,0.70);
  transition: color 0.18s;
}

.footer-grid a:hover { color: var(--gold-300); }

.footer-note {
  border-top: 1px solid rgba(15,23,42,0.10);
  margin-top: 36px;
  padding-top: 22px;
  font-size: 12.5px;
  color: rgba(15,23,42,0.50);
  position: relative;
}

/* ──────────────────────────────
   滚动渐显
────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s var(--ease-out), transform 0.65s var(--ease-out);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ──────────────────────────────
   响应式
────────────────────────────── */
@media (max-width: 980px) {
  .nav-links {
    position: absolute;
    top: 82px;
    right: 0;
    background: rgba(9,18,40,0.97);
    flex-direction: column;
    gap: 4px;
    padding: 16px 20px 22px;
    border-radius: 0 0 0 18px;
    box-shadow: 0 20px 48px rgba(0,0,0,0.30);
    transform: translateY(-10px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.22s var(--ease-out), transform 0.22s var(--ease-out);
    min-width: 180px;
    border: 1px solid rgba(255,255,255,0.08);
    border-top: none;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-links a { padding: 10px 14px; font-size: 14px; }

  .nav-toggle { display: inline-flex; }

  .cases-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
  .section { padding: 72px 0; }
  .nav-cta { display: none; }
  .hero-content { padding: 110px 0 96px; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .cta-banner { padding: 32px 28px; }
  .hero-controls { padding: 0 14px; }
  .hero-btn { width: 42px; height: 42px; font-size: 16px; }
  .partner-logo { width: clamp(160px, 65vw, 240px); height: 120px; }
  .cases-grid { grid-template-columns: minmax(0, 1fr); }
  .split { gap: 32px; }
  .media-frame::after { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .hero-slideshow { animation: none; transform: translateX(0); }
  .reveal { opacity: 1; transform: none; transition: none; }
  .card, .stat, .case-card, .partner-logo { transition: none; }
}

/* ──────────────────────────────
   404 错误页
────────────────────────────── */
.error404-code {
  font-size: clamp(80px, 15vw, 140px);
  font-weight: 800;
  font-family:
    "Source Han Sans SC", "Noto Sans SC", system-ui, sans-serif;
  color: var(--gold-400);
  line-height: 1;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
  text-shadow: 0 4px 24px rgba(58, 169, 255, 0.25);
}

.error404-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

/* ──────────────────────────────
   RTL 支持
────────────────────────────── */
html[dir="rtl"] body { direction: rtl; }
html[dir="rtl"] .nav { flex-direction: row-reverse; }
html[dir="rtl"] .nav-links { flex-direction: row-reverse; }
html[dir="rtl"] .nav-right { flex-direction: row-reverse; }
html[dir="rtl"] .nav-links a::after { transform-origin: right; }
html[dir="rtl"] .hero-content { text-align: right; }
html[dir="rtl"] .hero-actions { justify-content: flex-end; }
html[dir="rtl"] .badge-row,
html[dir="rtl"] .hero-highlights { justify-content: flex-end; }
html[dir="rtl"] .section-lead,
html[dir="rtl"] .news-item,
html[dir="rtl"] .contact-address-item { text-align: right; }
html[dir="rtl"] .contact-address-item::before { left: auto; right: 0; }
html[dir="rtl"] .lang-menu { right: auto; left: 0; }
html[dir="rtl"] .partners-btn.prev { right: -12px; left: auto; }
html[dir="rtl"] .partners-btn.next { left: -12px; right: auto; }
html[dir="rtl"] .footer-grid h4::after { left: auto; right: 0; }
html[dir="rtl"] .news-item { border-left: none; border-right: 4px solid var(--navy-700); }
html[dir="rtl"] .news-item:hover { transform: translateX(-4px); border-right-color: var(--gold-400); }
html[dir="rtl"] .card::before { left: auto; right: 0; }