/* ---------- 设计令牌 ---------- */
:root {
  --c-primary: #1F6FEB;
  --c-primary-600: #1a5fd0;
  --c-primary-700: #144FB5;
  --c-primary-050: #EAF2FE;
  --c-primary-100: #D7E6FD;
  --c-ink: #0B1F3A;
  --c-body: #44556E;
  --c-muted: #7C8BA3;
  --c-bg: #FFFFFF;
  --c-bg-soft: #F5F8FD;
  --c-line: #E3E9F2;
  --c-dark: #081729;
  --c-dark-2: #0D2138;
  --c-white: #FFFFFF;

  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;

  --radius: 14px;
  --radius-lg: 20px;

  --section-pad-m: 36px;
  --section-pad:48px;

  --shadow-sm: 0 2px 10px rgba(11, 31, 58, .06);
  --shadow-md: 0 12px 32px rgba(11, 31, 58, .10);
  --shadow-blue: 0 14px 34px rgba(31, 111, 235, .22);

  --container: 1200px;
  --header-h: 72px;
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-body);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--c-primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--c-primary-700); }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; }

h1, h2, h3, h4 {
  color: var(--c-ink);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -.01em;
}

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

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

/* 键盘焦点可见 */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--c-primary-100);
  outline-offset: 2px;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .25s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--c-primary); color: #fff; box-shadow: var(--shadow-blue); }
.btn-primary:hover { background: var(--c-primary-600); color: #fff; transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--c-ink); border-color: #C9D6E8; }
.btn-outline:hover { border-color: var(--c-primary); color: var(--c-primary); transform: translateY(-2px); }
.btn-white { background: #fff; color: var(--c-primary-700); }
.btn-white:hover { background: var(--c-primary-050); transform: translateY(-2px); }
.btn-ghost-light { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .4); }
.btn-ghost-light:hover { border-color: #fff; color: #fff; transform: translateY(-2px); }

/* ---------- 通用区块 ---------- */
.section { padding: var(--section-pad-m) 0; }
.section-alt { background: var(--c-bg-soft); }
.section-dark { background: var(--c-dark); }

.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--c-primary);
  margin-bottom: 14px;
}
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--c-primary); border-radius: 2px; }
.section-head.center .eyebrow::after { content: ""; width: 22px; height: 2px; background: var(--c-primary); border-radius: 2px; }
.section-title { font-size: clamp(26px, 4vw, 38px); margin-bottom: 16px; }
.section-lede { font-size: 16px; color: var(--c-muted); }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.site-header.scrolled { border-bottom-color: var(--c-line); box-shadow: var(--shadow-sm); }
.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; padding: 4px 0; }
.logo-mark {
  width: 38px; height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-700) 100%);
  overflow: hidden;
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-blue);
}
.logo-mark img { width: 100%; height: 100%; display: block; object-fit: contain; padding: 5px; }
.logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.logo-name { font-size: 19px; font-weight: 800; color: var(--c-ink); letter-spacing: .02em; }
.logo-sub { font-size: 10px; letter-spacing: .22em; color: var(--c-muted); }

.main-nav { display: none; }
.main-nav a {
  color: var(--c-body);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 8px;
  position: relative;
}
.main-nav a:hover { color: var(--c-primary); }
.main-nav a.active { color: var(--c-primary); font-weight: 600; }
.header-cta { display: none; }

/* 移动端汉堡按钮 */
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px; height: 44px;
  background: none; border: 0;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block; height: 2px; width: 24px;
  background: var(--c-ink);
  border-radius: 2px;
  transition: transform .3s ease, opacity .3s ease;
}
.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); }

/* 移动端抽屉菜单 */
.mobile-nav {
  position: fixed;
  top: var(--header-h); left: 0; right: 0;
  z-index: 99;
  background: #fff;
  border-bottom: 1px solid var(--c-line);
  box-shadow: var(--shadow-md);
  padding: 16px 24px 28px;
  transform: translateY(-8px);
  opacity: 0;
  visibility: hidden;
  transition: all .28s ease;
}
.mobile-nav.open { transform: translateY(0); opacity: 1; visibility: visible; }
.mobile-nav a {
  display: block;
  padding: 15px 4px;
  font-size: 16px;
  font-weight: 500;
  color: var(--c-ink);
  border-bottom: 1px solid var(--c-line);
}
.mobile-nav a:last-of-type { border-bottom: 0; }
.mobile-nav a.active { color: var(--c-primary); font-weight: 700; }
.mobile-nav .btn { margin-top: 16px; width: 100%; display: flex; color: #fff;font-weight: bold; }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative;
  padding: calc(var(--header-h) + 56px) 0 72px;
  overflow: hidden;
  background:
    radial-gradient(1000px 500px at 85% -10%, rgba(31, 111, 235, .12), transparent 60%),
    radial-gradient(700px 420px at -10% 110%, rgba(31, 111, 235, .08), transparent 55%),
    var(--c-bg);
}
.hero-grid { position: absolute; inset: 0; opacity: .5; pointer-events: none; }
.hero-grid svg { width: 100%; height: 100%; }

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--c-primary-050);
  color: var(--c-primary-700);
  font-size: 13px; font-weight: 600;
  padding: 7px 16px;
  border-radius: 999px;
  margin-bottom: 22px;
}
.hero-badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--c-primary); }
.hero-title {
  font-size: clamp(34px, 5.4vw, 56px);
  font-weight: 800;
  letter-spacing: -.02em;
  margin-bottom: 20px;
}
.hero-title .accent { color: var(--c-primary); }
.hero-desc { font-size: 17px; color: var(--c-muted); max-width: 520px; margin-bottom: 32px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 44px; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 560px;
  border-top: 1px solid var(--c-line);
  padding-top: 32px;
}
.hero-stat .num { font-size: 30px; font-weight: 800; color: var(--c-ink); line-height: 1.2; }
.hero-stat .num em { font-style: normal; color: var(--c-primary); }
.hero-stat .label { font-size: 13px; color: var(--c-muted); margin-top: 4px; }

.hero-visual { position: relative; }
.hero-visual .img-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  aspect-ratio: 4 / 3;
}
.hero-visual .img-frame img { width: 100%; height: 100%; object-fit: cover; }
.float-card {
  position: absolute;
  background: #fff;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  padding: 14px 18px;
  display: flex; align-items: center; gap: 12px;
  font-size: 13px;
}
.float-card .fc-ico {
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--c-primary-050);
  color: var(--c-primary);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.float-card b { display: block; color: var(--c-ink); font-size: 14px; line-height: 1.3; }
.float-card span { color: var(--c-muted); font-size: 12px; }
.fc-1 { top: 8%; left: -10px; animation: floatY 5s ease-in-out infinite; }
.fc-2 { bottom: 6%; right: -8px; animation: floatY 6s ease-in-out 1s infinite; }

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ---------- 服务卡片 ---------- */
.grid-3 { display: grid; grid-template-columns: 1fr; gap: 24px; }
.card-service {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  display: flex; flex-direction: column;
}
.card-service:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--c-primary-100); }
.service-ico {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: var(--c-primary-050);
  color: var(--c-primary);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.card-service h3 { font-size: 19px; margin-bottom: 10px; }
.card-service p { font-size: 14.5px; color: var(--c-muted); flex: 1; margin-bottom: 16px; }

/* 企业文化：价值观小标题 / 品牌信念·服务理念 */
.values-head { margin: 34px 0 18px; }
.values-title { font-size: 21px; color: var(--c-ink); }
.values-head p { margin-top: 6px; font-size: 14.5px; color: var(--c-muted); }
.culture-row { display: grid; grid-template-columns: 1fr; gap: 24px; margin-top: 28px; }
.culture-quote {
  position: relative;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-primary);
  border-radius: var(--radius);
  padding: 26px 28px;
}
.culture-quote h4 { font-size: 17px; color: var(--c-ink); margin-bottom: 10px; }
.culture-quote p { font-size: 15px; line-height: 1.9; color: var(--c-body); }
.card-link { font-size: 14px; font-weight: 600; display: inline-flex; align-items: center; gap: 6px; }
.card-link svg { transition: transform .2s ease; }
.card-link:hover svg { transform: translateX(4px); }

/* ---------- 数据带（深色） ---------- */
.stats-band { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px 24px; }
.stat-item { text-align: center; }
.stat-item .num { font-size: clamp(32px, 5vw, 46px); font-weight: 800; color: #fff; line-height: 1.2; }
.stat-item .num em { font-style: normal; color: #6DA4F5; }
.stat-item .label { color: rgba(255, 255, 255, .62); font-size: 14px; margin-top: 6px; }
.stat-divider { display: none; }

/* ---------- 服务流程 ---------- */
.process-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.process-item {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 24px 22px;
  display: flex; gap: 18px; align-items: flex-start;
}
.process-num {
  font-size: 32px; font-weight: 800;
  color: var(--c-primary-100);
  line-height: 1;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}
.process-item h3 { font-size: 17px; margin-bottom: 6px; }
.process-item p { font-size: 14px; color: var(--c-muted); }

/* ---------- 案例卡片 ---------- */
.case-card {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .25s ease, box-shadow .25s ease;
  display: flex; flex-direction: column;
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.case-cover { position: relative; aspect-ratio: 4 / 3; overflow: hidden; }
.case-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.case-card:hover .case-cover img { transform: scale(1.05); }
.case-tag {
  position: absolute; top: 14px; left: 14px;
  background: rgba(8, 23, 41, .72);
  backdrop-filter: blur(4px);
  color: #fff; font-size: 12px; font-weight: 600;
  padding: 5px 12px; border-radius: 999px;
}
.case-body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.case-body h3 { font-size: 18px; margin-bottom: 8px; }
.case-body p { font-size: 14px; color: var(--c-muted); flex: 1; margin-bottom: 14px; }
.case-result {
  display: flex; gap: 20px;
  border-top: 1px dashed var(--c-line);
  padding-top: 14px;
}
.case-result .r-item { font-size: 13px; color: var(--c-muted); }
.case-result .r-item b { display: block; font-size: 17px; color: var(--c-primary); }

/* ---------- 客户评价 ---------- */
.quote-card {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 30px 28px;
  position: relative;
}
.quote-mark { color: var(--c-primary-100); line-height: 1; margin-bottom: 12px; }
.quote-card blockquote { font-size: 15px; color: var(--c-body); margin-bottom: 22px; }
.quote-author { display: flex; align-items: center; gap: 12px; }
.quote-avatar {
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--c-primary-050);
  color: var(--c-primary-700);
  font-weight: 700; font-size: 15px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.quote-author b { display: block; color: var(--c-ink); font-size: 14px; line-height: 1.3; }
.quote-author span { font-size: 12.5px; color: var(--c-muted); }

/* ---------- 新闻卡片 ---------- */
.news-card {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 26px;
  display: flex; flex-direction: column;
  transition: transform .25s ease, box-shadow .25s ease;
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.news-date { font-size: 12.5px; color: var(--c-muted); display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.news-date::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--c-primary); }
.news-card h3 { font-size: 17px; margin-bottom: 10px; line-height: 1.45; }
.news-card p { font-size: 14px; color: var(--c-muted); flex: 1; margin-bottom: 16px; }
.news-card .card-link { font-size: 13.5px; }

/* ---------- CTA 条 ---------- */
.cta-band {
  background:
    radial-gradient(800px 300px at 90% 0%, rgba(109, 164, 245, .28), transparent 60%),
    linear-gradient(120deg, var(--c-primary-700) 0%, var(--c-primary) 100%);
  border-radius: var(--radius-lg);
  padding: 56px 32px;
  text-align: center;
  color: #fff;
}
.cta-band h2 { color: #fff; font-size: clamp(24px, 3.6vw, 34px); margin-bottom: 12px; }
.cta-band p { color: rgba(255, 255, 255, .82); max-width: 560px; margin: 0 auto 30px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--c-dark); color: rgba(255, 255, 255, .68); }
.footer-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding: 64px 0 48px;
}
.footer-brand .logo-name { color: #fff; }
.footer-brand p { font-size: 14px; margin: 18px 0 0; max-width: 300px; }
.footer-col h4 {
  color: #fff; font-size: 15px; font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: .04em;
}
.footer-col ul li { margin-bottom: 12px; }
.footer-col a { color: rgba(255, 255, 255, .66); font-size: 14px; }
.footer-col a:hover { color: #fff; }
.footer-contact li {
  display: flex; gap: 10px; align-items: flex-start;
  font-size: 14px; margin-bottom: 14px;
}
.footer-contact svg { flex-shrink: 0; margin-top: 4px; color: #6DA4F5; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 22px 0;
  display: flex; flex-direction: column; gap: 8px;
  align-items: center; justify-content: space-between;
  font-size: 13px;
  color: rgba(255, 255, 255, .45);
}
.footer-bottom a { color: rgba(255, 255, 255, .45); }
.footer-bottom a:hover { color: #fff; }

/* ---------- 内页页头 ---------- */
.page-hero {
  padding: calc(var(--header-h) + 56px) 0 56px;
  background:
    radial-gradient(800px 380px at 90% -20%, rgba(31, 111, 235, .14), transparent 60%),
    var(--c-bg-soft);
  border-bottom: 1px solid var(--c-line);
}
.breadcrumb {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  font-size: 13px; color: var(--c-muted);
  margin-bottom: 18px;
}
.breadcrumb a { color: var(--c-muted); }
.breadcrumb a:hover { color: var(--c-primary); }
.breadcrumb .sep { color: #C3CFE0; }
.breadcrumb .current { color: var(--c-ink); font-weight: 600; }
.page-hero h1 { font-size: clamp(28px, 4.4vw, 42px); margin-bottom: 14px; }
.page-hero .lede { font-size: 16px; color: var(--c-muted); max-width: 640px; }

/* ---------- 关于页 ---------- */
.about-intro { display: grid; grid-template-columns: 1fr; gap: 40px; align-items: center; }
.about-intro .img-frame { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); aspect-ratio: 3 / 2; }
.about-intro .img-frame img { width: 100%; height: 100%; object-fit: cover; }
.about-intro h2 { font-size: clamp(24px, 3.4vw, 32px); margin-bottom: 18px; }
.about-intro p { margin-bottom: 14px; font-size: 15px; }
.about-points { display: grid; grid-template-columns: 1fr; gap: 14px; margin-top: 22px; }
.about-points li { display: flex; gap: 12px; align-items: center; font-size: 14.5px; color: var(--c-ink); font-weight: 500; }
.about-points svg { color: var(--c-primary); flex-shrink: 0; }

/* 时间轴（发展历程） */
.timeline { display: grid; gap: 0; }
.tl-row { display: grid; grid-template-columns: 92px 28px 1fr; gap: 0; position: relative; }
.tl-time { text-align: right; padding: 6px 18px 34px 0; font-weight: 700; color: var(--c-primary); font-size: 16px; white-space: nowrap; }
.tl-axis { position: relative; }
.tl-dot {
  position: absolute; top: 12px; left: 50%;
  transform: translateX(-50%);
  width: 12px; height: 12px; border-radius: 50%;
  background: #fff; border: 3px solid var(--c-primary);
  z-index: 1;
}
.tl-axis::before {
  content: ""; position: absolute; top: 0; bottom: 0; left: 50%;
  width: 2px; margin-left: -1px;
  background: var(--c-primary-100);
}
.tl-row:last-child .tl-axis::before { bottom: auto; height: 24px; }
.tl-body { padding: 0 0 34px 18px; }
.tl-body h3 { font-size: 17px; margin-bottom: 6px; }
.tl-body p { font-size: 14px; color: var(--c-muted); }

/* 团队 */
.team-grid { display: grid; grid-template-columns: 1fr; gap: 24px; }
.team-card { text-align: center; background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 30px 20px; }
.team-avatar {
  width: 76px; height: 76px; border-radius: 50%;
  background: var(--c-primary-050); color: var(--c-primary-700);
  font-size: 26px; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px;
}
.team-card h3 { font-size: 17px; }
.team-card .role { font-size: 13px; color: var(--c-primary); margin-top: 4px; }
.team-card p { font-size: 13.5px; color: var(--c-muted); margin-top: 10px; }

/* ---------- 服务详情 ---------- */
.service-detail { display: grid; grid-template-columns: 1fr; gap: 20px; }
.sd-card { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 28px; }
.sd-head { display: flex; align-items: center; gap: 16px; margin-bottom: 14px; }
.sd-head .service-ico { margin: 0; }
.sd-card h3 { font-size: 19px; }
.sd-card ul { display: grid; grid-template-columns: 1fr; gap: 10px; }
.sd-card li { font-size: 14.5px; color: var(--c-body); display: flex; gap: 10px; align-items: flex-start; }
.sd-card li svg { color: var(--c-primary); flex-shrink: 0; margin-top: 4px; }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr; gap: 32px; }
.contact-cards { display: grid; grid-template-columns: 1fr; gap: 16px; }
.contact-card {
  display: flex; gap: 16px; align-items: flex-start;
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  padding: 22px;
}
.contact-card .fc-ico { width: 44px; height: 44px; border-radius: 12px; background: var(--c-primary-050); color: var(--c-primary); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-card b { display: block; color: var(--c-ink); font-size: 15px; margin-bottom: 4px; }
.contact-card span, .contact-card a { font-size: 14px; color: var(--c-body); word-break: break-all; }

.form-card { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg); padding: 32px; box-shadow: var(--shadow-sm); }
.form-card h2 { font-size: 22px; margin-bottom: 8px; }
.form-card .sub { font-size: 14px; color: var(--c-muted); margin-bottom: 26px; }
.form-row { display: grid; grid-template-columns: 1fr; gap: 18px; }
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group label { font-size: 13.5px; font-weight: 600; color: var(--c-ink); }
.form-group label i { color: var(--c-primary); font-style: normal; }
/* ---------- 图形验证码 ---------- */
.captcha-box {
  display: flex; align-items: center; gap: 10px;
}
.captcha-box .form-control { flex: 1; min-width: 0; }
.captcha-canvas {
  width: 110px; height: 42px;
  border-radius: 8px;
  border: 1px solid var(--c-line);
  cursor: pointer;
  background: var(--c-bg-soft);
  flex-shrink: 0;
}
.captcha-refresh {
  flex-shrink: 0;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--c-primary);
  background: var(--c-primary-050);
  border: 1px solid var(--c-primary-100);
  border-radius: 8px;
  cursor: pointer;
  transition: background .2s ease, color .2s ease;
}
.captcha-refresh:hover { background: var(--c-primary); color: #fff; }
@media (max-width: 767px) {
  .captcha-box { flex-wrap: wrap; }
  .captcha-canvas { order: 2; }
  .captcha-refresh { order: 3; }
}
.form-control {
  border: 1px solid var(--c-line);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 15px;
  font-family: inherit;
  color: var(--c-ink);
  background: #fff;
  transition: border-color .2s ease, box-shadow .2s ease;
  width: 100%;
}
.form-control:focus { outline: none; border-color: var(--c-primary); box-shadow: 0 0 0 3px var(--c-primary-050); }
textarea.form-control { min-height: 130px; resize: vertical; }
.form-error { font-size: 12.5px; color: #D64545; min-height: 18px; }
.form-error.show { display: block; }
.form-tip { font-size: 12.5px; color: var(--c-muted); margin-top: 10px; }

/* ---------- 新闻详情 ---------- */
.article { max-width: 780px; margin: 0 auto; }
.article-meta { display: flex; flex-wrap: wrap; gap: 16px; font-size: 13.5px; color: var(--c-muted); margin-bottom: 28px; padding-bottom: 20px; border-bottom: 1px solid var(--c-line); }
.article-body { font-size: 15.5px; line-height: 2; }
.article-body h2 { font-size: 22px; margin: 32px 0 14px; }
.article-body h3 { font-size: 18px; margin: 26px 0 10px; }
.article-body p { margin-bottom: 18px; }
.article-body ul { margin-bottom: 18px; padding-left: 4px; }
.article-body ul li { position: relative; padding-left: 20px; margin-bottom: 10px; }
.article-body ul li::before { content: ""; position: absolute; left: 2px; top: 11px; width: 6px; height: 6px; border-radius: 50%; background: var(--c-primary); }
.article-body blockquote {
  border-left: 3px solid var(--c-primary);
  background: var(--c-bg-soft);
  padding: 16px 20px;
  margin: 24px 0;
  border-radius: 0 10px 10px 0;
  color: var(--c-ink);
  font-weight: 500;
}
.article-nav { display: flex; flex-direction: column; gap: 10px; margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--c-line); font-size: 14px; }

/* ---------- 回到顶部 ---------- */
.back-top {
  position: fixed;
  right: 20px; bottom: 24px;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--c-ink);
  color: #fff;
  border: 0;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0; visibility: hidden;
  transform: translateY(12px);
  transition: all .3s ease;
  z-index: 90;
}
.back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { background: var(--c-primary); }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  left: 50%; bottom: 40px;
  transform: translateX(-50%) translateY(16px);
  background: var(--c-ink);
  color: #fff;
  padding: 13px 26px;
  border-radius: 999px;
  font-size: 14px;
  box-shadow: var(--shadow-md);
  opacity: 0; visibility: hidden;
  transition: all .3s ease;
  z-index: 200;
  max-width: calc(100vw - 48px);
  text-align: center;
}
.toast.show { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }

/* ---------- 响应式：平板 768px ---------- */
@media (min-width: 768px) {
  .section { padding: var(--section-pad) 0; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .stats-band { grid-template-columns: repeat(4, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .culture-row { grid-template-columns: 1fr 1fr; }
  .hero-stats { grid-template-columns: repeat(4, 1fr); }
  .about-intro { grid-template-columns: 1fr 1fr; gap: 56px; }
  .about-points { grid-template-columns: 1fr 1fr; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-cards { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr 1fr; }
  .form-row .full { grid-column: 1 / -1; }
  .footer-top { grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 32px; }
  .footer-bottom { flex-direction: row; }
  .article-nav { flex-direction: row; justify-content: space-between; }
}

/* ---------- 响应式：电脑 1024px ---------- */
@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .main-nav { display: flex; align-items: center; gap: 6px; }
  .header-cta { display: inline-flex; }
  .nav-toggle { display: none; }
  .mobile-nav { display: none; }
  .hero { padding: calc(var(--header-h) + 72px) 0 96px; }
  .hero-inner { grid-template-columns: 1.05fr 1fr; gap: 64px; }
  .team-grid { grid-template-columns: repeat(4, 1fr); }
  .contact-grid { grid-template-columns: 0.9fr 1.4fr; gap: 48px; }
  .contact-cards { grid-template-columns: 1fr; }
  .service-detail { grid-template-columns: 1fr 1fr; }
}

/* ---------- 大屏微调 ---------- */
@media (min-width: 1280px) {
  .process-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
}

/* ---------- 手机端可读性微调 ---------- */
@media (max-width: 640px) {
  .form-control { font-size: 16px; }
  .breadcrumb { font-size: 14px; }
}