/* ============================================================
   安徽省梵尼兰环保科技有限公司 - 企业官网共享样式
   主题：科技蓝 + 工业感
   ============================================================ */

:root {
  --primary: #0d4d8c;
  --primary-dark: #0a3568;
  --primary-darker: #082a52;
  --accent: #00b4d8;
  --accent-light: #e1f6fb;
  --amber: #f59e0b;
  --ink: #243b53;
  --ink-light: #5c7186;
  --bg: #ffffff;
  --bg-soft: #f4f7fb;
  --bg-deep: #0b2545;
  --line: #e3eaf2;
  --shadow-sm: 0 2px 10px rgba(13, 77, 140, 0.08);
  --shadow-md: 0 8px 28px rgba(13, 77, 140, 0.14);
  --shadow-lg: 0 18px 48px rgba(8, 42, 82, 0.22);
  --radius: 12px;
  --font: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

html, body { overflow-x: hidden; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a { text-decoration: none; color: inherit; }

ul { list-style: none; }

.container {
  width: min(1200px, 92%);
  margin: 0 auto;
}

.section { padding: 84px 0; }

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

.section--deep {
  background: linear-gradient(135deg, var(--bg-deep) 0%, var(--primary-dark) 100%);
  color: #fff;
}

.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }

.section-head .eyebrow {
  display: inline-block;
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-head h2 {
  font-size: clamp(26px, 3.4vw, 38px);
  color: var(--primary-dark);
  font-weight: 800;
  line-height: 1.3;
}

.section-head p { color: var(--ink-light); margin-top: 14px; font-size: 15px; }

.section--deep .section-head h2 { color: #fff; }
.section--deep .section-head p { color: rgba(255, 255, 255, 0.72); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 15px;
  transition: all 0.25s ease;
  border: 2px solid transparent;
  cursor: pointer;
  line-height: 1.4;
}

.btn--primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 18px rgba(13, 77, 140, 0.3);
}

.btn--primary:hover { background: var(--accent); transform: translateY(-2px); }

.btn--ghost {
  border-color: rgba(255, 255, 255, 0.65);
  color: #fff;
  background: transparent;
}

.btn--ghost:hover { background: #fff; color: var(--primary-dark); border-color: #fff; }

.btn--outline {
  border-color: var(--primary);
  color: var(--primary);
  background: transparent;
}

.btn--outline:hover { background: var(--primary); color: #fff; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(8, 42, 82, 0.97);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.18);
}

.navbar { display: flex; align-items: center; justify-content: space-between; height: 74px; }

.brand { display: flex; align-items: center; gap: 12px; }

.brand-logo {
  width: 44px;
  height: 44px;
  object-fit: contain;
  flex: none;
  background: none;
  border-radius: 6px;
}

.brand-name { color: #fff; line-height: 1.2; min-width: 0; }

.brand-name strong { font-size: 17px; letter-spacing: 1px; display: block; white-space: nowrap; }

.brand-name span {
  font-size: 10px;
  color: rgba(255, 255, 255, 0.65);
  letter-spacing: 0.4px;
  line-height: 1.35;
  max-width: 320px;
  display: block;
}

.nav-links { display: flex; align-items: center; gap: 4px; }

.nav-links a {
  color: rgba(255, 255, 255, 0.82);
  padding: 9px 14px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  white-space: nowrap;
  transition: all 0.2s;
}

.nav-links a:hover, .nav-links a.active {
  color: #fff;
  background: rgba(0, 180, 216, 0.18);
}

.nav-cta {
  margin-left: 10px;
  background: linear-gradient(135deg, var(--accent), #0093c4);
  color: #fff;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(0, 180, 216, 0.4);
}

.nav-cta:hover { transform: translateY(-2px); }

/* 语言切换 */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: 8px;
  padding: 6px 10px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 8px;
  white-space: nowrap;
}
.lang-switch a { color: rgba(255, 255, 255, 0.82); font-size: 13px; font-weight: 600; padding: 2px 4px; line-height: 1.2; }
.lang-switch a:hover { color: #fff; }
.lang-switch .active { color: var(--accent); font-size: 13px; font-weight: 700; padding: 2px 4px; line-height: 1.2; }
.lang-switch .slash { color: rgba(255, 255, 255, 0.4); font-size: 12px; }

/* FAQ / 技术文档 */
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius);
  padding: 26px 28px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}
.faq-item .faq-cat {
  display: inline-block;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.faq-item h3 { color: var(--primary-dark); font-size: 19px; line-height: 1.4; }
.faq-item h4 { color: var(--ink); font-size: 15px; margin: 16px 0 6px; }
.faq-item p { color: var(--ink-light); margin-top: 8px; }
.faq-list ul { list-style: none; margin-top: 6px; }
.faq-list ul li { color: var(--ink-light); padding: 3px 0 3px 18px; position: relative; }
.faq-list ul li:before { content: "›"; position: absolute; left: 4px; color: var(--accent); font-weight: 700; }
.faq-spec { display: flex; flex-wrap: wrap; gap: 8px 26px; margin-top: 12px; }
.faq-spec span { font-size: 13px; color: var(--ink-light); background: var(--bg-soft); border: 1px solid var(--line); border-radius: 6px; padding: 4px 10px; }

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  width: 42px;
  height: 42px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  cursor: pointer;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all 0.3s;
}

.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 85% 10%, rgba(0, 180, 216, 0.28) 0%, transparent 55%),
    radial-gradient(ellipse 60% 50% at 10% 90%, rgba(245, 158, 11, 0.12) 0%, transparent 50%),
    linear-gradient(135deg, #0b2545 0%, #0d4d8c 55%, #082a52 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  object-fit: cover;
  width: 100%;
  height: 100%;
  opacity: 0.55;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(8, 42, 82, 0.92) 0%, rgba(8, 42, 82, 0.55) 55%, rgba(8, 42, 82, 0.25) 100%);
}

.hero-content { position: relative; z-index: 2; max-width: 680px; padding: 80px 0; }

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 180, 216, 0.16);
  border: 1px solid rgba(0, 180, 216, 0.45);
  color: #8fe6f7;
  font-size: 13px;
  padding: 7px 16px;
  border-radius: 30px;
  letter-spacing: 2px;
  margin-bottom: 22px;
}

.hero h1 {
  font-size: clamp(30px, 4.6vw, 52px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 1px;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(90deg, var(--accent), #7ce0f2);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p.lead {
  margin: 20px 0 34px;
  font-size: 17px;
  color: rgba(255, 255, 255, 0.85);
  max-width: 560px;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-stats {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255, 255, 255, 0.14);
  border-radius: 14px;
  overflow: hidden;
  margin-top: 64px;
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.hero-stats .stat {
  background: rgba(8, 42, 82, 0.72);
  padding: 26px 16px;
  text-align: center;
}

.hero-stats .stat strong {
  display: block;
  font-size: clamp(22px, 2.6vw, 34px);
  font-weight: 800;
  color: #7ce0f2;
}

.hero-stats .stat span { font-size: 13px; color: rgba(255, 255, 255, 0.75); }

/* ---------- 特性 / 服务条 ---------- */
.feature-strip { background: var(--bg-deep); border-top: 1px solid rgba(255,255,255,0.08); }

.feature-strip .strip-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  padding: 30px 0;
}

.strip-item { display: flex; gap: 14px; align-items: center; }

.strip-item .icon {
  width: 52px;
  height: 52px;
  flex: none;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(0, 180, 216, 0.22), rgba(0, 180, 216, 0.06));
  border: 1px solid rgba(0, 180, 216, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #7ce0f2;
}

.strip-item h4 { color: #fff; font-size: 15px; margin-bottom: 2px; }

.strip-item p { color: rgba(255, 255, 255, 0.6); font-size: 13px; }

/* ---------- 简介区（首页） ---------- */
.intro-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 60px;
  align-items: center;
}

.intro-media { position: relative; }

.intro-media img.main {
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4 / 3;
  object-fit: cover;
  width: 100%;
}

.intro-media .badge {
  position: absolute;
  right: -16px;
  bottom: -18px;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  color: #fff;
  border-radius: 14px;
  padding: 18px 24px;
  box-shadow: var(--shadow-md);
  text-align: center;
}

.intro-media .badge strong { font-size: 30px; font-weight: 800; display: block; line-height: 1.1; }
.intro-media .badge span { font-size: 13px; opacity: 0.92; }

.intro-text .eyebrow {
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 4px;
  margin-bottom: 10px;
  display: block;
}

.intro-text h2 {
  font-size: clamp(24px, 3vw, 34px);
  color: var(--primary-dark);
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 18px;
}

.intro-text p { color: var(--ink-light); margin-bottom: 16px; }

.intro-points { margin: 26px 0 32px; display: grid; gap: 14px; }

.intro-points li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-weight: 500;
  color: var(--ink);
}

.intro-points li .dot {
  width: 22px;
  height: 22px;
  flex: none;
  margin-top: 3px;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
}

/* ---------- 产品卡片 ---------- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }

.product-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--line);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }

.product-card .thumb { aspect-ratio: 16 / 10; overflow: hidden; position: relative; }

.product-card .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.product-card:hover .thumb img { transform: scale(1.06); }

.product-card .thumb .tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(8, 42, 82, 0.85);
  color: #fff;
  font-size: 12px;
  padding: 5px 12px;
  border-radius: 20px;
  letter-spacing: 1px;
}

.product-card .body { padding: 22px 24px 26px; display: flex; flex-direction: column; flex: 1; }

.product-card .body h3 { font-size: 18px; color: var(--primary-dark); margin-bottom: 8px; }

.product-card .body p { font-size: 14px; color: var(--ink-light); flex: 1; }

.product-card .body .more {
  margin-top: 16px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.product-card .body .more:hover { color: var(--primary); }

/* ---------- 应用领域 ---------- */
.app-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }

.app-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 24px;
  text-align: center;
  transition: all 0.3s;
}

.app-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }

.app-card .icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 18px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--accent-light), #fff);
  border: 1px solid rgba(0, 180, 216, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}

.app-card h3 { font-size: 17px; color: var(--primary-dark); margin-bottom: 8px; }

.app-card p { font-size: 13.5px; color: var(--ink-light); }

/* ---------- 优势区块 ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

.adv-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: all 0.3s;
}

.adv-card:hover { background: rgba(255, 255, 255, 0.12); transform: translateY(-5px); }

.adv-card .num {
  font-size: 34px;
  font-weight: 800;
  color: var(--accent);
  opacity: 0.9;
  margin-bottom: 10px;
  line-height: 1;
}

.adv-card h3 { color: #fff; font-size: 17px; margin-bottom: 8px; }

.adv-card p { color: rgba(255, 255, 255, 0.68); font-size: 13.5px; }

/* ---------- 新闻卡片 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }

.news-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
}

.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }

.news-card .thumb { aspect-ratio: 16 / 9; overflow: hidden; }

.news-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }

.news-card:hover .thumb img { transform: scale(1.05); }

.news-card .body { padding: 22px 24px 24px; display: flex; flex-direction: column; flex: 1; }

.news-card .date { font-size: 12.5px; color: var(--accent); font-weight: 600; margin-bottom: 8px; }

.news-card h3 { font-size: 16.5px; color: var(--primary-dark); line-height: 1.5; margin-bottom: 8px; }

.news-card p { font-size: 14px; color: var(--ink-light); flex: 1; }

/* ---------- CTA 横幅 ---------- */
.cta-band { background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 130%); }

.cta-band .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  padding: 52px 0;
  flex-wrap: wrap;
}

.cta-band h2 { color: #fff; font-size: clamp(22px, 2.8vw, 32px); font-weight: 800; }

.cta-band p { color: rgba(255, 255, 255, 0.85); margin-top: 6px; }

.cta-band .btn--ghost { border-color: #fff; }
.cta-band .btn--ghost:hover { background: #fff; color: var(--primary); }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--bg-deep); color: rgba(255, 255, 255, 0.72); }

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
  gap: 44px;
  padding: 60px 0 44px;
}

.footer-top h4 {
  color: #fff;
  font-size: 16px;
  margin-bottom: 18px;
  letter-spacing: 1px;
}

.footer-top p { font-size: 14px; line-height: 1.9; }

.footer-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }

.footer-brand .brand-logo { width: 40px; height: 40px; font-size: 18px; }

.footer-brand strong { color: #fff; font-size: 16px; letter-spacing: 1px; }

.footer-links li { margin-bottom: 10px; }

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.68);
  transition: color 0.2s, padding-left 0.2s;
}

.footer-links a:hover { color: var(--accent); padding-left: 6px; }

.footer-contact li { display: flex; gap: 10px; margin-bottom: 14px; font-size: 14px; }

.footer-contact .ico { color: var(--accent); flex: none; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  color: rgba(255, 255, 255, 0.5);
}

/* ---------- 内页横幅 ---------- */
.page-hero {
  background: linear-gradient(135deg, var(--bg-deep) 0%, var(--primary) 100%);
  padding: 74px 0;
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 15% 120%, rgba(0, 180, 216, 0.25) 0%, transparent 45%),
    radial-gradient(circle at 85% -20%, rgba(0, 180, 216, 0.18) 0%, transparent 40%);
}

.page-hero h1 { font-size: clamp(26px, 3.4vw, 40px); font-weight: 800; position: relative; }

.page-hero p { color: rgba(255, 255, 255, 0.75); margin-top: 10px; font-size: 15px; position: relative; }

.crumbs {
  margin-top: 16px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  position: relative;
}

.crumbs a:hover { color: var(--accent); }

.crumbs .sep { margin: 0 8px; opacity: 0.5; }

/* ---------- 关于页 ---------- */
.timeline { max-width: 860px; margin: 0 auto; position: relative; padding-left: 40px; }

.timeline::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--primary));
}

.timeline-item { position: relative; margin-bottom: 40px; }

.timeline-item::before {
  content: "";
  position: absolute;
  left: -35px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--accent);
}

.timeline-item .year { font-size: 15px; font-weight: 800; color: var(--accent); }

.timeline-item h3 { color: var(--primary-dark); font-size: 17px; margin: 4px 0 6px; }

.timeline-item p { color: var(--ink-light); font-size: 14px; }

.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }

.value-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 30px;
  transition: all 0.3s;
}

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

.value-card .icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.value-card h3 { color: var(--primary-dark); font-size: 17px; margin-bottom: 8px; }

.value-card p { color: var(--ink-light); font-size: 14px; }

/* ---------- 产品详情列表 ---------- */
.prod-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; padding: 44px 0; }

.prod-detail:nth-child(even) .prod-media { order: 2; }

.prod-media img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  aspect-ratio: 4 / 3;
  object-fit: cover;
  width: 100%;
}

.prod-info .eyebrow { color: var(--accent); font-weight: 700; letter-spacing: 3px; font-size: 13px; }

.prod-info h2 { font-size: clamp(22px, 2.6vw, 30px); color: var(--primary-dark); margin: 8px 0 14px; }

.prod-info p { color: var(--ink-light); font-size: 14.5px; margin-bottom: 16px; }

.prod-info ul { margin: 10px 0 22px; display: grid; gap: 10px; }

.prod-info ul li {
  display: flex;
  gap: 10px;
  font-size: 14px;
  align-items: flex-start;
  color: var(--ink);
}

.prod-info ul li .tick {
  color: var(--accent);
  font-weight: 800;
  flex: none;
}

/* ---------- 应用详细 ---------- */
.app-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; padding: 44px 0; }

.app-detail:nth-child(even) .app-media { order: 2; }

.app-media { position: relative; }

.app-media img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  aspect-ratio: 16 / 10;
  object-fit: cover;
  width: 100%;
}

.app-media .cap {
  position: absolute;
  left: 18px;
  bottom: 18px;
  background: rgba(8, 42, 82, 0.88);
  color: #fff;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 13px;
  letter-spacing: 1px;
}

.app-detail h2 { font-size: clamp(22px, 2.6vw, 30px); color: var(--primary-dark); margin-bottom: 14px; }

.app-detail p { color: var(--ink-light); font-size: 14.5px; margin-bottom: 14px; }

.app-detail ul { display: grid; gap: 10px; }

.app-detail ul li { display: flex; gap: 10px; font-size: 14px; color: var(--ink); }

.app-detail ul li .tick { color: var(--accent); font-weight: 800; flex: none; }

/* ---------- 新闻列表 ---------- */
.news-list { display: grid; gap: 26px; max-width: 960px; margin: 0 auto; }

.news-item {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.3s;
}

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

.news-item .thumb { position: relative; overflow: hidden; }

.news-item .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }

.news-item:hover .thumb img { transform: scale(1.05); }

.news-item .thumb .date-chip {
  position: absolute;
  top: 14px;
  left: 14px;
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  text-align: center;
  padding: 6px 12px;
  line-height: 1.2;
}

.news-item .thumb .date-chip strong { display: block; font-size: 18px; }

.news-item .thumb .date-chip span { font-size: 11px; opacity: 0.85; }

.news-item .body { padding: 26px 28px; display: flex; flex-direction: column; justify-content: center; }

.news-item .body .cat { font-size: 12px; color: var(--accent); font-weight: 700; letter-spacing: 1px; margin-bottom: 6px; }

.news-item .body h3 { font-size: 19px; color: var(--primary-dark); margin-bottom: 10px; }

.news-item .body p { color: var(--ink-light); font-size: 14px; }

/* ---------- 联系我们 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 44px; align-items: start; }

.contact-info-card {
  background: linear-gradient(150deg, var(--bg-deep), var(--primary));
  border-radius: var(--radius);
  padding: 40px 36px;
  color: #fff;
}

.contact-info-card h3 { font-size: 22px; margin-bottom: 8px; }

.contact-info-card > p { color: rgba(255, 255, 255, 0.75); font-size: 14px; margin-bottom: 28px; }

.contact-info-card .ci {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
  align-items: flex-start;
}

.contact-info-card .ci .ico {
  width: 46px;
  height: 46px;
  flex: none;
  border-radius: 12px;
  background: rgba(0, 180, 216, 0.2);
  border: 1px solid rgba(0, 180, 216, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #7ce0f2;
}

.contact-info-card .ci h4 { font-size: 14px; color: rgba(255, 255, 255, 0.6); font-weight: 500; margin-bottom: 2px; }

.contact-info-card .ci p { font-size: 15px; font-weight: 600; }

.contact-form-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 40px 36px;
  box-shadow: var(--shadow-sm);
}

.contact-form-card h3 { font-size: 22px; color: var(--primary-dark); margin-bottom: 6px; }

.contact-form-card > p { color: var(--ink-light); font-size: 14px; margin-bottom: 26px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

.form-group { margin-bottom: 18px; }

.form-group label { display: block; font-size: 13.5px; font-weight: 600; color: var(--ink); margin-bottom: 7px; }

.form-group label em { color: #e11d48; font-style: normal; }

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--line);
  border-radius: 8px;
  font-family: inherit;
  font-size: 14px;
  color: var(--ink);
  background: var(--bg-soft);
  transition: all 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.15);
}

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

.form-tip { font-size: 12.5px; color: var(--ink-light); margin-top: 10px; }

/* ---------- 横幅小模块 ---------- */
.mini-band {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 38px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 60px;
}

.mini-band h3 { color: var(--primary-dark); font-size: 19px; }

.mini-band p { color: var(--ink-light); font-size: 14px; margin-top: 4px; }

/* ---------- 页脚回到顶部 ---------- */
.to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  border: 0;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all 0.3s;
  z-index: 900;
}

.to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }

.to-top:hover { background: var(--accent); }

/* ---------- 滚动入场动画 ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.6s ease, transform 0.6s ease; }

.reveal.in { opacity: 1; transform: translateY(0); }

.reveal.d1 { transition-delay: 0.08s; }
.reveal.d2 { transition-delay: 0.16s; }
.reveal.d3 { transition-delay: 0.24s; }
.reveal.d4 { transition-delay: 0.32s; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .product-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .app-grid { grid-template-columns: repeat(3, 1fr); }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .strip-grid, .hero-stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 992px) {
  .nav-toggle { display: flex; }

  .nav-links {
    position: absolute;
    top: 74px;
    left: 0;
    right: 0;
    background: var(--primary-darker);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 5%;
    gap: 2px;
    display: none;
    box-shadow: 0 20px 30px rgba(0, 0, 0, 0.25);
  }

  .nav-links.open { display: flex; }

  .nav-links a { padding: 13px 16px; font-size: 16px; }

  .nav-cta { margin: 8px 0 4px; text-align: center; }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }

  .brand-name strong { font-size: 15px; letter-spacing: 0.5px; }

  .hero { min-height: 560px; }
  .hero-content { padding: 60px 0; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .hero-stats .stat { padding: 18px 10px; }

  .intro-grid, .prod-detail, .app-detail, .contact-grid { grid-template-columns: 1fr; gap: 36px; }

  .prod-detail:nth-child(even) .prod-media, .app-detail:nth-child(even) .app-media { order: 0; }

  .product-grid, .news-grid, .app-grid, .adv-grid, .value-grid { grid-template-columns: 1fr; }

  .intro-media .badge { right: 8px; }

  .news-item { grid-template-columns: 1fr; }
  .news-item .thumb { aspect-ratio: 16 / 9; }

  .form-row { grid-template-columns: 1fr; }

  .footer-top { grid-template-columns: 1fr; gap: 34px; }

  .footer-bottom { flex-direction: column; text-align: center; }
}

/* 联系表单：蜜罐隐藏 + 提交结果提示 */
.hp-wrap { position: absolute; left: -9999px; top: -9999px; width: 1px; height: 1px; overflow: hidden; }

.form-result {
  margin-top: 12px;
  padding: 11px 14px;
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.5;
  display: none;
}
.form-result.info { display: block; background: #eef6ff; color: #0d4d8c; }
.form-result.ok   { display: block; background: #e7f8ee; color: #15803d; border: 1px solid #bbe8cc; }
.form-result.err  { display: block; background: #fdebeb; color: #b91c1c; border: 1px solid #f3c2c2; }