/* ============================================================
   磁力猫 - 智能搜索平台  全站共享样式
   ============================================================ */
:root {
  --primary: #ff7a1a;
  --primary-dark: #f05e04;
  --primary-light: #ffb347;
  --accent: #6c5ce7;
  --ink: #171832;
  --ink-2: #23244d;
  --text: #3d3f5c;
  --muted: #7a7d9d;
  --bg: #f7f8fd;
  --bg-soft: #fff6ee;
  --card: #ffffff;
  --line: #e8eaf6;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(23, 24, 50, .08);
  --shadow-lg: 0 24px 60px rgba(23, 24, 50, .14);
  --grad: linear-gradient(120deg, #ff7a1a 0%, #ffb347 100%);
  --grad-dark: linear-gradient(135deg, #171832 0%, #23244d 60%, #33295e 100%);
  --container: 1200px;
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .25s ease; }
ul, ol { list-style: none; }
.container { width: min(var(--container), 92%); margin: 0 auto; }

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

/* ---------- 通用标题 ---------- */
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-tag {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 999px;
  background: rgba(255, 122, 26, .1);
  color: var(--primary-dark);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: clamp(26px, 4vw, 38px);
  color: var(--ink);
  line-height: 1.3;
  font-weight: 800;
}
.section-head p { margin-top: 14px; color: var(--muted); font-size: 17px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 34px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  border: none;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease;
  position: relative;
  overflow: hidden;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 12px 26px rgba(255, 122, 26, .35); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 18px 34px rgba(255, 122, 26, .45); }
.btn-ghost { background: rgba(255,255,255,.1); color: #fff; border: 1px solid rgba(255,255,255,.4); backdrop-filter: blur(6px); }
.btn-ghost:hover { background: rgba(255,255,255,.22); transform: translateY(-3px); }
.btn-outline { background: transparent; color: var(--primary-dark); border: 2px solid var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255, 255, 255, .85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .3s ease, border-color .3s ease;
}
.site-header.scrolled { box-shadow: 0 6px 24px rgba(23,24,50,.08); border-color: var(--line); }
.navbar { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 800; color: var(--ink); }
.brand-logo {
  width: 42px; height: 42px; border-radius: 12px;
  background: var(--grad);
  display: grid; place-items: center;
  color: #fff; font-size: 22px;
  box-shadow: 0 8px 18px rgba(255,122,26,.35);
}
.brand span em { font-style: normal; color: var(--primary); }
.nav-menu { display: flex; align-items: center; gap: 8px; }
.nav-menu a {
  padding: 9px 18px; border-radius: 999px;
  font-weight: 600; color: var(--text); font-size: 15.5px;
  position: relative;
}
.nav-menu a:hover { color: var(--primary-dark); background: rgba(255,122,26,.08); }
.nav-menu a.active { color: #fff; background: var(--grad); box-shadow: 0 8px 18px rgba(255,122,26,.3); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; width: 44px; height: 44px; }
.nav-toggle span { display: block; width: 24px; height: 2.5px; background: var(--ink); margin: 5px auto; border-radius: 2px; transition: .3s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ---------- Hero 主视觉 ---------- */
.hero {
  position: relative;
  padding: 168px 0 110px;
  background: var(--grad-dark);
  color: #fff;
  overflow: hidden;
}
.hero::before, .hero::after {
  content: ""; position: absolute; border-radius: 50%;
  filter: blur(90px); opacity: .5; pointer-events: none;
}
.hero::before { width: 480px; height: 480px; background: #ff7a1a; top: -160px; right: -120px; opacity: .35; }
.hero::after { width: 420px; height: 420px; background: #6c5ce7; bottom: -180px; left: -140px; opacity: .4; }
.hero-grid { position: absolute; inset: 0; background-image: radial-gradient(rgba(255,255,255,.06) 1px, transparent 1px); background-size: 34px 34px; pointer-events: none; }
.hero-inner { position: relative; display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 18px; border-radius: 999px;
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.22);
  font-size: 14px; margin-bottom: 22px; backdrop-filter: blur(6px);
}
.hero-badge i { width: 8px; height: 8px; border-radius: 50%; background: #3ddc84; display: inline-block; animation: pulse 1.8s infinite; }
.hero h1 { font-size: clamp(32px, 5vw, 52px); line-height: 1.22; font-weight: 900; letter-spacing: 1px; }
.hero h1 .hl { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-sub { margin: 22px 0 34px; font-size: 17.5px; color: rgba(255,255,255,.82); max-width: 560px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 42px; margin-top: 52px; flex-wrap: wrap; }
.hero-stats .stat b { display: block; font-size: 30px; font-weight: 800; color: #fff; }
.hero-stats .stat b i { font-style: normal; color: var(--primary-light); }
.hero-stats .stat span { font-size: 14px; color: rgba(255,255,255,.65); }
.hero-visual { position: relative; }
.hero-visual .hero-img {
  border-radius: 24px; box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255,255,255,.18);
  animation: floatY 5s ease-in-out infinite;
}
.float-chip {
  position: absolute; padding: 12px 18px; border-radius: 14px;
  background: rgba(255,255,255,.94); color: var(--ink);
  font-size: 14px; font-weight: 700; box-shadow: var(--shadow);
  display: flex; align-items: center; gap: 10px;
  animation: floatY 4s ease-in-out infinite;
}
.float-chip small { display: block; font-weight: 500; color: var(--muted); font-size: 12px; }
.float-chip .dot { width: 36px; height: 36px; border-radius: 10px; background: var(--grad); display: grid; place-items: center; color: #fff; font-size: 18px; flex: none; }
.chip-1 { top: 6%; left: -34px; animation-delay: .6s; }
.chip-2 { bottom: 10%; right: -26px; animation-delay: 1.2s; }

/* ---------- 搜索演示条 ---------- */
.search-demo {
  margin-top: 38px; display: flex; max-width: 560px;
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.25);
  border-radius: 999px; padding: 6px; backdrop-filter: blur(8px);
}
.search-demo input {
  flex: 1; background: transparent; border: none; outline: none;
  color: #fff; font-size: 15.5px; padding: 10px 18px; font-family: var(--font); min-width: 0;
}
.search-demo input::placeholder { color: rgba(255,255,255,.55); }
.search-demo button { flex: none; }

/* ---------- 核心特性 ---------- */
.section { padding: 96px 0; }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.feature-card {
  background: var(--card); border-radius: var(--radius);
  padding: 38px 30px; border: 1px solid var(--line);
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
  position: relative; overflow: hidden;
}
.feature-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform .35s ease;
}
.feature-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-lg); border-color: transparent; }
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon {
  width: 62px; height: 62px; border-radius: 16px;
  background: var(--bg-soft); display: grid; place-items: center;
  font-size: 30px; margin-bottom: 22px;
  transition: transform .35s ease, background .35s ease;
}
.feature-card:hover .feature-icon { transform: rotate(-8deg) scale(1.08); background: var(--grad); }
.feature-card h3 { font-size: 20px; color: var(--ink); margin-bottom: 12px; font-weight: 700; }
.feature-card p { font-size: 15px; color: var(--muted); }

/* ---------- 服务介绍 ---------- */
.services { background: #fff; }
.services-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
.service-item {
  display: flex; gap: 22px; padding: 30px;
  border-radius: var(--radius); background: var(--bg);
  border: 1px solid var(--line);
  transition: transform .3s ease, box-shadow .3s ease;
}
.service-item:hover { transform: translateY(-6px); box-shadow: var(--shadow); background: #fff; }
.service-num {
  flex: none; width: 56px; height: 56px; border-radius: 14px;
  background: var(--grad-dark); color: #fff;
  display: grid; place-items: center; font-size: 22px; font-weight: 800;
}
.service-item h3 { color: var(--ink); font-size: 19px; margin-bottom: 8px; }
.service-item p { font-size: 14.5px; color: var(--muted); }

/* ---------- 流程步骤 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
.step-card {
  background: var(--card); border-radius: var(--radius); padding: 34px 26px;
  border: 1px solid var(--line); text-align: center; position: relative;
  transition: transform .3s ease, box-shadow .3s ease;
}
.step-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.step-card::after {
  counter-increment: step; content: "0" counter(step);
  position: absolute; top: 16px; right: 20px;
  font-size: 34px; font-weight: 900; color: rgba(255,122,26,.14);
}
.step-card .step-ico { font-size: 40px; margin-bottom: 16px; display: inline-block; }
.step-card h3 { font-size: 18px; color: var(--ink); margin-bottom: 10px; }
.step-card p { font-size: 14px; color: var(--muted); }

/* ---------- 数据带 ---------- */
.stats-band { background: var(--grad-dark); color: #fff; padding: 74px 0; position: relative; overflow: hidden; }
.stats-band::before { content: ""; position: absolute; width: 380px; height: 380px; border-radius: 50%; background: rgba(255,122,26,.25); filter: blur(100px); top: -160px; right: 8%; }
.stats-band .band-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; text-align: center; position: relative; }
.stats-band b { display: block; font-size: clamp(30px, 4vw, 44px); font-weight: 900; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stats-band span { font-size: 15px; color: rgba(255,255,255,.7); }

/* ---------- 图文分栏 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.split.reverse > .split-media { order: 2; }
.split-media img { border-radius: 20px; box-shadow: var(--shadow-lg); }
.split-body h2 { font-size: clamp(24px, 3.4vw, 34px); color: var(--ink); line-height: 1.35; font-weight: 800; margin-bottom: 18px; }
.split-body p { color: var(--muted); margin-bottom: 14px; }
.check-list { margin: 22px 0 30px; display: grid; gap: 12px; }
.check-list li { display: flex; gap: 12px; align-items: flex-start; font-size: 15.5px; color: var(--text); }
.check-list li::before {
  content: "✓"; flex: none; width: 24px; height: 24px; border-radius: 50%;
  background: rgba(61,220,132,.15); color: #18b15e;
  display: grid; place-items: center; font-size: 13px; font-weight: 800; margin-top: 3px;
}

/* ---------- 新闻卡片 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.news-card {
  background: var(--card); border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line);
  transition: transform .35s ease, box-shadow .35s ease;
  display: flex; flex-direction: column;
}
.news-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.news-card .thumb { position: relative; overflow: hidden; aspect-ratio: 16/9; }
.news-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.news-card:hover .thumb img { transform: scale(1.07); }
.news-card .thumb time {
  position: absolute; left: 14px; bottom: 14px;
  background: rgba(23,24,50,.78); color: #fff;
  padding: 5px 14px; border-radius: 999px; font-size: 12.5px; backdrop-filter: blur(4px);
}
.news-card .body { padding: 24px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.news-card .cat { font-size: 12.5px; color: var(--primary-dark); font-weight: 700; letter-spacing: 1px; margin-bottom: 8px; }
.news-card h3 { font-size: 18px; color: var(--ink); line-height: 1.5; margin-bottom: 10px; font-weight: 700; }
.news-card p { font-size: 14px; color: var(--muted); flex: 1; }
.news-card .more { margin-top: 16px; font-size: 14.5px; font-weight: 700; color: var(--primary-dark); display: inline-flex; align-items: center; gap: 6px; }
.news-card .more::after { content: "→"; transition: transform .3s ease; }
.news-card:hover .more::after { transform: translateX(5px); }

/* ---------- FAQ ---------- */
.faq-list { max-width: 820px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-sm); overflow: hidden; transition: box-shadow .3s ease; }
.faq-item.active { box-shadow: var(--shadow); }
.faq-q {
  width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 20px 24px; background: none; border: none; cursor: pointer;
  font-size: 16.5px; font-weight: 700; color: var(--ink); text-align: left; font-family: var(--font);
}
.faq-q .ic { flex: none; width: 30px; height: 30px; border-radius: 50%; background: var(--bg-soft); color: var(--primary-dark); display: grid; place-items: center; font-size: 18px; transition: transform .3s ease, background .3s ease; }
.faq-item.active .faq-q .ic { transform: rotate(45deg); background: var(--grad); color: #fff; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-a p { padding: 0 24px 22px; color: var(--muted); font-size: 15px; }

/* ---------- CTA ---------- */
.cta { position: relative; padding: 96px 0; background: var(--grad-dark); color: #fff; overflow: hidden; text-align: center; }
.cta::before { content: ""; position: absolute; width: 520px; height: 520px; border-radius: 50%; background: rgba(255,122,26,.3); filter: blur(120px); top: -220px; left: 50%; transform: translateX(-50%); }
.cta-inner { position: relative; max-width: 720px; margin: 0 auto; }
.cta h2 { font-size: clamp(26px, 4vw, 40px); font-weight: 900; line-height: 1.3; margin-bottom: 16px; }
.cta p { color: rgba(255,255,255,.78); font-size: 17px; margin-bottom: 36px; }
.cta .hero-actions { justify-content: center; }

/* ---------- 页脚 ---------- */
.site-footer { background: #10112a; color: rgba(255,255,255,.66); padding: 70px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 44px; padding-bottom: 50px; }
.footer-brand .brand { color: #fff; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; max-width: 300px; }
.site-footer h4 { color: #fff; font-size: 16px; margin-bottom: 18px; font-weight: 700; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 14.5px; }
.footer-links a:hover { color: var(--primary-light); }
.footer-contact li { display: flex; gap: 10px; margin-bottom: 12px; font-size: 14.5px; align-items: flex-start; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.09); padding: 22px 0; text-align: center; font-size: 13.5px; color: rgba(255,255,255,.4); }

/* ---------- 子页面页头 ---------- */
.page-hero { padding: 158px 0 84px; background: var(--grad-dark); color: #fff; text-align: center; position: relative; overflow: hidden; }
.page-hero::before { content: ""; position: absolute; width: 420px; height: 420px; border-radius: 50%; background: rgba(255,122,26,.28); filter: blur(110px); top: -180px; right: 10%; }
.page-hero::after { content: ""; position: absolute; width: 360px; height: 360px; border-radius: 50%; background: rgba(108,92,231,.3); filter: blur(100px); bottom: -160px; left: 8%; }
.page-hero h1 { font-size: clamp(30px, 4.6vw, 44px); font-weight: 900; position: relative; }
.page-hero p { margin-top: 14px; color: rgba(255,255,255,.78); max-width: 640px; margin-left: auto; margin-right: auto; position: relative; }
.breadcrumb { position: relative; margin-top: 20px; font-size: 14px; color: rgba(255,255,255,.6); }
.breadcrumb a:hover { color: var(--primary-light); }

/* ---------- 文章正文 ---------- */
.article-wrap { max-width: 860px; margin: 0 auto; background: #fff; border-radius: var(--radius); padding: 54px 58px; box-shadow: var(--shadow); margin-top: -60px; position: relative; }
.article-meta { display: flex; gap: 18px; align-items: center; color: var(--muted); font-size: 14px; margin-bottom: 24px; flex-wrap: wrap; }
.article-meta .cat { background: rgba(255,122,26,.1); color: var(--primary-dark); padding: 4px 14px; border-radius: 999px; font-weight: 700; font-size: 13px; }
.article-wrap h2 { color: var(--ink); font-size: 25px; margin: 38px 0 16px; font-weight: 800; }
.article-wrap h3 { color: var(--ink); font-size: 19px; margin: 28px 0 12px; font-weight: 700; }
.article-wrap p { margin-bottom: 16px; }
.article-wrap img { border-radius: var(--radius-sm); margin: 24px 0; }
.article-wrap blockquote {
  border-left: 4px solid var(--primary); background: var(--bg-soft);
  padding: 18px 24px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0; color: var(--text); font-size: 15.5px;
}
.article-wrap ul.bullet { margin: 0 0 18px 4px; display: grid; gap: 8px; }
.article-wrap ul.bullet li { padding-left: 22px; position: relative; }
.article-wrap ul.bullet li::before { content: ""; position: absolute; left: 0; top: 11px; width: 8px; height: 8px; border-radius: 50%; background: var(--grad); }

/* ---------- 产品卡片 ---------- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.product-card {
  background: var(--card); border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); display: flex; flex-direction: column;
  transition: transform .35s ease, box-shadow .35s ease;
}
.product-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-lg); }
.product-card .thumb { position: relative; aspect-ratio: 16/10; overflow: hidden; }
.product-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.product-card:hover .thumb img { transform: scale(1.06); }
.product-card .badge { position: absolute; top: 14px; left: 14px; background: var(--grad); color: #fff; padding: 5px 14px; border-radius: 999px; font-size: 12.5px; font-weight: 700; }
.product-card .body { padding: 26px; display: flex; flex-direction: column; flex: 1; }
.product-card h3 { color: var(--ink); font-size: 20px; margin-bottom: 10px; font-weight: 700; }
.product-card p { font-size: 14.5px; color: var(--muted); flex: 1; }
.product-tags { display: flex; gap: 8px; flex-wrap: wrap; margin: 16px 0 20px; }
.product-tags span { font-size: 12.5px; padding: 4px 12px; border-radius: 999px; background: var(--bg); border: 1px solid var(--line); color: var(--muted); }

/* ---------- 联系表单 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 50px; align-items: start; }
.contact-info-card { background: var(--grad-dark); color: #fff; border-radius: var(--radius); padding: 44px 38px; position: relative; overflow: hidden; }
.contact-info-card::before { content: ""; position: absolute; width: 260px; height: 260px; border-radius: 50%; background: rgba(255,122,26,.3); filter: blur(80px); bottom: -100px; right: -60px; }
.contact-info-card h3 { font-size: 23px; margin-bottom: 26px; font-weight: 800; }
.contact-line { display: flex; gap: 16px; margin-bottom: 24px; position: relative; }
.contact-line .ico { flex: none; width: 46px; height: 46px; border-radius: 12px; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.2); display: grid; place-items: center; font-size: 20px; }
.contact-line b { display: block; font-size: 15px; margin-bottom: 2px; }
.contact-line span { font-size: 14px; color: rgba(255,255,255,.7); }
.form-card { background: #fff; border-radius: var(--radius); padding: 44px 42px; box-shadow: var(--shadow); border: 1px solid var(--line); }
.form-card h3 { color: var(--ink); font-size: 22px; margin-bottom: 8px; font-weight: 800; }
.form-card > p { color: var(--muted); font-size: 14.5px; margin-bottom: 28px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; color: var(--ink); margin-bottom: 8px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 13px 16px; border: 1.5px solid var(--line); border-radius: var(--radius-sm);
  font-family: var(--font); font-size: 15px; color: var(--text); background: var(--bg);
  transition: border-color .25s ease, box-shadow .25s ease, background .25s ease; outline: none;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: var(--primary); background: #fff; box-shadow: 0 0 0 4px rgba(255,122,26,.12);
}
.form-group textarea { resize: vertical; min-height: 130px; }
.form-tip { font-size: 13px; color: var(--muted); margin-top: 14px; text-align: center; }

/* ---------- 团队/价值卡 ---------- */
.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.value-card { background: var(--card); border-radius: var(--radius); padding: 32px 24px; text-align: center; border: 1px solid var(--line); transition: transform .3s ease, box-shadow .3s ease; }
.value-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.value-card .v-ico { width: 64px; height: 64px; margin: 0 auto 18px; border-radius: 50%; background: var(--bg-soft); display: grid; place-items: center; font-size: 28px; }
.value-card h3 { color: var(--ink); font-size: 17.5px; margin-bottom: 8px; }
.value-card p { font-size: 13.5px; color: var(--muted); }

/* ---------- 时间线 ---------- */
.timeline { max-width: 760px; margin: 0 auto; position: relative; padding-left: 34px; }
.timeline::before { content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(var(--primary), var(--accent)); border-radius: 2px; }
.timeline-item { position: relative; padding-bottom: 38px; }
.timeline-item::before { content: ""; position: absolute; left: -33px; top: 7px; width: 14px; height: 14px; border-radius: 50%; background: var(--grad); box-shadow: 0 0 0 5px rgba(255,122,26,.15); }
.timeline-item time { font-size: 13.5px; font-weight: 700; color: var(--primary-dark); letter-spacing: 1px; }
.timeline-item h3 { color: var(--ink); font-size: 19px; margin: 6px 0 8px; }
.timeline-item p { font-size: 14.5px; color: var(--muted); }

/* ---------- 回到顶部 ---------- */
.to-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 900;
  width: 48px; height: 48px; border-radius: 50%; border: none; cursor: pointer;
  background: var(--grad); color: #fff; font-size: 20px;
  box-shadow: 0 12px 26px rgba(255,122,26,.4);
  opacity: 0; visibility: hidden; transform: translateY(14px);
  transition: .35s ease;
}
.to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { transform: translateY(-4px); }

/* ---------- 动画 ---------- */
@keyframes floatY { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }
@keyframes pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: .5; transform: scale(.8); } }
.reveal { opacity: 0; transform: translateY(36px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal[data-delay="1"] { transition-delay: .12s; }
.reveal[data-delay="2"] { transition-delay: .24s; }
.reveal[data-delay="3"] { transition-delay: .36s; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .features-grid, .news-grid, .product-grid { grid-template-columns: repeat(2, 1fr); }
  .steps, .value-grid, .stats-band .band-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-inner { grid-template-columns: 1fr; gap: 44px; }
  .hero-visual { max-width: 560px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid, .split { grid-template-columns: 1fr; }
  .split.reverse > .split-media { order: 0; }
}
@media (max-width: 768px) {
  .section { padding: 68px 0; }
  .nav-toggle { display: block; }
  .nav-menu {
    position: fixed; top: 72px; left: 0; right: 0;
    background: #fff; flex-direction: column; align-items: stretch;
    padding: 18px 5%; gap: 6px; box-shadow: 0 20px 40px rgba(23,24,50,.12);
    transform: translateY(-130%); transition: transform .35s ease; z-index: 999;
  }
  .nav-menu.open { transform: translateY(0); }
  .nav-menu a { padding: 13px 18px; }
  .hero { padding: 136px 0 76px; }
  .hero-stats { gap: 26px; }
  .features-grid, .news-grid, .product-grid, .services-grid, .steps, .value-grid { grid-template-columns: 1fr; }
  .stats-band .band-grid { grid-template-columns: repeat(2, 1fr); gap: 34px; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .article-wrap { padding: 36px 24px; margin-top: -40px; }
  .form-card { padding: 32px 24px; }
  .form-row { grid-template-columns: 1fr; }
  .chip-1 { left: 0; } .chip-2 { right: 0; }
  .float-chip { padding: 10px 14px; font-size: 13px; }
}

/* ---------- Core Web Vitals 优化 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}