/* ============================================================
   云启企服 - 官网样式
   品牌色系: 主蓝 #0b5fff / 深蓝 #0a3d91 / 文字 #1a1f2e
   ============================================================ */
:root {
  --primary: #0b5fff;
  --primary-dark: #0847c2;
  --primary-deep: #0a3d91;
  --teal: #00635c;
  --ink: #1a1f2e;
  --ink-2: #4b5568;
  --ink-3: #8b93a7;
  --bg: #ffffff;
  --bg-gray: #f5f7fa;
  --line: #e7ebf2;
  --radius: 14px;
  --shadow: 0 6px 24px rgba(11, 95, 255, 0.08);
  --shadow-lg: 0 12px 40px rgba(10, 40, 90, 0.14);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue",
          "Microsoft YaHei", "Hiragino Sans GB", 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(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 15px;
}
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 860px; }
.center { text-align: center; }
.lead { font-size: 17px; color: var(--ink-2); }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 26px; border-radius: 8px; font-size: 15px; font-weight: 600;
  border: 1px solid transparent; cursor: pointer; transition: all .25s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-white { background: #fff; color: var(--primary); }
.btn-white:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(0,0,0,.18); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.5); }
.btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,.12); }
.btn-lg { padding: 14px 34px; font-size: 16px; }
.btn-sm { padding: 8px 18px; font-size: 14px; }
.btn-block { width: 100%; }

/* ---------------- 标签 ---------------- */
.tag {
  display: inline-block; padding: 4px 14px; border-radius: 100px;
  font-size: 12.5px; font-weight: 600; letter-spacing: .5px;
}
.tag-light { background: rgba(255,255,255,.16); color: #fff; border: 1px solid rgba(255,255,255,.35); }

/* ---------------- 公告条 ---------------- */
.announcement-bar {
  background: linear-gradient(90deg, #0b5fff, #0a3d91);
  color: #fff; text-align: center; font-size: 13.5px;
  padding: 7px 16px; position: relative; z-index: 60;
}

/* ---------------- 顶部导航 ---------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 28px; height: 66px; }
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-mark {
  width: 38px; height: 38px; border-radius: 10px;
  background: linear-gradient(135deg, #0b5fff, #4d94ff);
  color: #fff; font-size: 21px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 12px rgba(11,95,255,.35);
}
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-name { font-size: 17px; font-weight: 700; color: var(--ink); }
.logo-en { font-size: 10px; color: var(--ink-3); letter-spacing: .8px; }
.main-nav { display: flex; gap: 4px; margin-left: auto; }
.main-nav a {
  padding: 8px 14px; border-radius: 8px; font-size: 15px; color: var(--ink-2);
  transition: all .2s; white-space: nowrap;
}
.main-nav a:hover { color: var(--primary); background: #eef4ff; }
.main-nav a.active { color: var(--primary); font-weight: 600; background: #eef4ff; }
.header-right { display: flex; align-items: center; gap: 12px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle span { width: 22px; height: 2px; background: var(--ink); border-radius: 2px; transition: all .3s; }

/* ---------------- Hero 轮播 ---------------- */
.hero { position: relative; overflow: hidden; }
.hero-track { display: flex; transition: transform .6s ease; }
.hero-slide {
  min-width: 100%; position: relative; overflow: hidden;
  padding: 90px 0 110px; color: #fff;
}
.hero-grid-bg {
  position: absolute; inset: 0; opacity: .25;
  background-image:
    linear-gradient(rgba(255,255,255,.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.14) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 90% at 70% 40%, #000 30%, transparent 75%);
}
.hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: .35; }
.hero-content { position: relative; z-index: 2; }
.hero-content h1 { font-size: 46px; font-weight: 800; letter-spacing: 1px; margin-bottom: 18px; }
.hero-content p { font-size: 17.5px; opacity: .92; margin-bottom: 6px; max-width: 640px; }
.hero-content .btn { margin-top: 28px; }
.hero-dots {
  position: absolute; bottom: 28px; left: 0; right: 0; z-index: 5;
  display: flex; justify-content: center; gap: 10px;
}
.hero-dots button {
  width: 9px; height: 9px; border-radius: 100px; border: 0; cursor: pointer;
  background: rgba(255,255,255,.45); transition: all .3s; padding: 0;
}
.hero-dots button.active { width: 26px; background: #fff; }

/* ---------------- 数据信任条 ---------------- */
.stat-bar { background: var(--primary-deep); color: #fff; }
.stat-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  padding: 34px 24px; gap: 20px; text-align: center;
}
.stat-value { font-size: 34px; font-weight: 800; line-height: 1.2; }
.stat-label { font-size: 13.5px; opacity: .8; margin-top: 4px; }

/* ---------------- 通用区块 ---------------- */
.section { padding: 84px 0; }
.section-gray { background: var(--bg-gray); }
.section-head { text-align: center; margin-bottom: 52px; }
.section-head-row { display: flex; justify-content: space-between; align-items: flex-end; text-align: left; }
.section-title { font-size: 32px; font-weight: 800; letter-spacing: .5px; }
.section-sub { color: var(--ink-3); margin-top: 10px; font-size: 15.5px; }
.link-more { color: var(--primary); font-weight: 600; font-size: 15px; }

/* ---------------- 卡片网格 ---------------- */
.card-grid { display: grid; gap: 22px; }
.card-grid-2 { grid-template-columns: repeat(2, 1fr); }
.card-grid-3 { grid-template-columns: repeat(3, 1fr); }
.card-grid-4 { grid-template-columns: repeat(4, 1fr); }

/* 服务卡片（首页） */
.service-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 24px; transition: all .3s ease; display: flex; flex-direction: column;
}
.service-card:hover {
  transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: transparent;
}
.service-card-icon {
  width: 64px; height: 64px; border-radius: 16px; margin-bottom: 18px;
  background: linear-gradient(135deg, #eef4ff, #dbe8ff); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
}
.service-card h3 { font-size: 18.5px; font-weight: 700; margin-bottom: 8px; }
.service-card > p { color: var(--ink-2); font-size: 13.5px; margin-bottom: 14px; flex-grow: 0; }
.service-card ul { margin-bottom: 16px; flex-grow: 1; }
.service-card li { font-size: 13px; color: var(--ink-3); padding: 3px 0; display: flex; align-items: center; gap: 8px; }
.service-card .dot { width: 5px; height: 5px; border-radius: 50%; background: var(--primary); flex-shrink: 0; }
.service-card-more { color: var(--primary); font-weight: 600; font-size: 13.5px; }

/* 优势卡片 */
.adv-card {
  background: #fff; border-radius: var(--radius); padding: 28px 22px;
  border: 1px solid var(--line); transition: all .3s;
}
.adv-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.adv-icon {
  width: 56px; height: 56px; border-radius: 14px; margin-bottom: 16px;
  background: #eef4ff; color: var(--primary);
  display: flex; align-items: center; justify-content: center;
}
.adv-card h3 { font-size: 16.5px; font-weight: 700; margin-bottom: 8px; }
.adv-card p { color: var(--ink-2); font-size: 13.5px; }

/* 功能卡片（服务详情页） */
.feat-card {
  display: flex; gap: 18px; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px 24px; transition: all .3s;
}
.feat-card:hover { box-shadow: var(--shadow); border-color: transparent; transform: translateY(-3px); }
.feat-icon {
  width: 60px; height: 60px; border-radius: 14px; flex-shrink: 0;
  background: linear-gradient(135deg, #eef4ff, #e0ecff); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
}
.feat-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 6px; }
.feat-card p { color: var(--ink-2); font-size: 13.8px; }

/* ---------------- 帮助中心入口（首页） ---------------- */
.help-spot { background: linear-gradient(120deg, #f0f7ff, #e8f5f2); }
.help-spot-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.help-spot-text h2 { font-size: 30px; font-weight: 800; line-height: 1.4; margin: 16px 0; }
.help-spot-text > p { color: var(--ink-2); margin-bottom: 20px; }
.check-list li { display: flex; gap: 10px; align-items: flex-start; padding: 6px 0; color: var(--ink-2); }
.check-list .check { color: var(--primary); font-weight: 700; }
.help-spot-text .btn { margin-top: 14px; }
.help-mock {
  background: #fff; border-radius: 16px; padding: 24px;
  box-shadow: var(--shadow-lg); border: 1px solid var(--line);
}
.help-mock-search {
  display: flex; align-items: center; gap: 10px;
  background: #f0f4ff; border: 1px solid #dbe6ff; border-radius: 999px;
  padding: 11px 16px; font-size: 14px; color: var(--ink-2);
}
.help-mock-icon { display: flex; flex: none; color: var(--primary); }
.help-mock-search > span:last-child { color: var(--ink); font-weight: 500; }
.help-mock-list { margin: 16px 0 4px; display: flex; flex-direction: column; gap: 10px; }
.help-mock-row {
  display: flex; align-items: center; gap: 10px;
  background: #f6f8fb; border-radius: 12px; padding: 12px 14px;
  font-size: 13.5px; color: var(--ink-2);
}
.help-mock-badge {
  flex: none; background: rgba(11, 95, 255, .12); color: var(--primary);
  font-size: 11.5px; font-weight: 600; padding: 3px 9px; border-radius: 999px;
}
.help-mock-tag { margin-top: 14px; font-size: 12px; color: var(--ink-3); text-align: center; }

/* ---------------- 流程 ---------------- */
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.process-item {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 22px; position: relative;
}
.process-num {
  font-size: 30px; font-weight: 800; color: #dbe8ff; line-height: 1;
  margin-bottom: 14px; font-style: italic;
}
.process-item h3 { font-size: 16.5px; font-weight: 700; margin-bottom: 8px; }
.process-item p { color: var(--ink-2); font-size: 13.5px; }

/* ---------------- 客户 ---------------- */
.client-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.client-item {
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 20px 12px; text-align: center; font-size: 14.5px; font-weight: 600;
  color: var(--ink-2); transition: all .3s;
}
.client-item:hover { color: var(--primary); border-color: var(--primary); }

/* ---------------- 文章卡片 ---------------- */
.article-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: all .3s; display: flex; flex-direction: column;
}
.article-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: transparent; }
.article-cover {
  height: 158px; background: linear-gradient(135deg, #dbe8ff, #eef4ff);
  position: relative; display: flex; align-items: center; justify-content: center;
  background-size: cover; background-position: center;
}
.article-cover-letter { font-size: 44px; font-weight: 800; color: var(--primary); opacity: .55; }
.article-cat {
  position: absolute; top: 12px; left: 12px;
  background: rgba(11,95,255,.92); color: #fff;
  font-size: 11.5px; padding: 3px 10px; border-radius: 100px; font-weight: 600;
}
.article-body { padding: 18px 20px 20px; display: flex; flex-direction: column; flex-grow: 1; }
.article-body h3 { font-size: 15.5px; font-weight: 700; line-height: 1.5; margin-bottom: 8px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.article-body p { color: var(--ink-2); font-size: 13px; flex-grow: 1;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.article-date { color: var(--ink-3); font-size: 12.5px; margin-top: 12px; }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.empty-tip { text-align: center; color: var(--ink-3); padding: 60px 0; }

/* ---------------- 页头（内页） ---------------- */
.page-hero {
  background: linear-gradient(135deg, #0a3d91, #0b5fff 60%, #4d94ff);
  color: #fff; padding: 64px 0 70px; position: relative; overflow: hidden;
}
.page-hero::after {
  content: ""; position: absolute; inset: 0; opacity: .18;
  background-image: linear-gradient(rgba(255,255,255,.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.16) 1px, transparent 1px);
  background-size: 48px 48px;
}
.page-hero-inner { position: relative; z-index: 2; }
.page-hero h1 { font-size: 38px; font-weight: 800; margin: 14px 0 10px; }
.page-hero p { font-size: 16px; opacity: .92; max-width: 680px; }
.page-hero-actions { display: flex; gap: 14px; margin-top: 26px; }
.page-hero-sm { padding: 46px 0 50px; }
.page-hero-sm h1 { font-size: 32px; margin: 10px 0 6px; }
.article-meta { font-size: 13.5px; opacity: .8; }

/* ---------------- FAQ ---------------- */
.faq-list { display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  overflow: hidden; transition: all .25s;
}
.faq-item[open] { border-color: var(--primary); box-shadow: var(--shadow); }
.faq-item summary {
  cursor: pointer; padding: 18px 22px; font-weight: 600; font-size: 15px;
  list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; font-size: 20px; color: var(--primary); transition: transform .25s;
  flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { padding: 0 22px 18px; color: var(--ink-2); font-size: 14px; }

/* ---------------- 文章详情 ---------------- */
.article-layout { display: grid; grid-template-columns: 1fr 320px; gap: 40px; align-items: start; }
.article-content { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 36px 38px; }
.article-hero-img { border-radius: 12px; margin-bottom: 24px; }
.article-rich { font-size: 15.5px; color: var(--ink); }
.article-rich h2 { font-size: 21px; font-weight: 700; margin: 28px 0 12px; }
.article-rich h3 { font-size: 18px; font-weight: 700; margin: 22px 0 10px; }
.article-rich p { margin: 12px 0; }
.article-rich ul { list-style: disc; padding-left: 22px; margin: 12px 0; }
.article-rich li { margin: 6px 0; }
.article-cta {
  margin-top: 34px; padding: 22px; border-radius: 12px; text-align: center;
  background: linear-gradient(135deg, #eef4ff, #f0f7ff); border: 1px dashed var(--primary);
}
.article-cta p { font-weight: 600; margin-bottom: 12px; }
.article-aside h3 { font-size: 17px; font-weight: 700; margin-bottom: 16px; padding-bottom: 10px; border-bottom: 2px solid var(--primary); display: inline-block; }
.aside-item { display: block; padding: 14px 0; border-bottom: 1px solid var(--line); transition: all .2s; }
.aside-item:hover h4 { color: var(--primary); }
.aside-cat { font-size: 11.5px; color: var(--primary); font-weight: 600; }
.aside-item h4 { font-size: 14px; font-weight: 600; margin: 4px 0; line-height: 1.5; }
.aside-date { font-size: 12px; color: var(--ink-3); }
.aside-card { background: var(--bg-gray); border-radius: 12px; padding: 20px; margin-top: 18px; }
.aside-card h4 { font-size: 15px; margin-bottom: 6px; }
.aside-card p { font-size: 13px; color: var(--ink-2); margin-bottom: 12px; }

/* ---------------- 联系我们 ---------------- */
.contact-layout { display: grid; grid-template-columns: 380px 1fr; gap: 40px; align-items: start; }
.contact-info { display: flex; flex-direction: column; gap: 22px; }
.contact-item { display: flex; gap: 14px; align-items: flex-start; }
.contact-icon {
  width: 46px; height: 46px; border-radius: 12px; flex-shrink: 0;
  background: #eef4ff; color: var(--primary);
  display: flex; align-items: center; justify-content: center;
}
.contact-item h4 { font-size: 13.5px; color: var(--ink-3); font-weight: 600; margin-bottom: 2px; }
.contact-item a { font-size: 16.5px; font-weight: 700; color: var(--ink); }
.contact-item a:hover { color: var(--primary); }
.contact-item p { color: var(--ink-2); font-size: 14.5px; }
.contact-note { background: var(--bg-gray); border-radius: 12px; padding: 18px 20px; }
.contact-note h4 { font-size: 15px; margin-bottom: 6px; }
.contact-note p { font-size: 13.5px; color: var(--ink-2); }
.contact-form-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px 36px; box-shadow: var(--shadow);
}
.contact-form-card h3 { font-size: 21px; font-weight: 700; margin-bottom: 22px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-field { margin-bottom: 16px; }
.form-field label { display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 7px; }
.form-field label em { color: #e5484d; font-style: normal; }
.form-field input, .form-field select, .form-field textarea {
  width: 100%; padding: 11px 14px; border: 1px solid var(--line); border-radius: 9px;
  font-size: 14.5px; outline: none; background: #fafbfd; transition: all .2s; color: var(--ink);
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  border-color: var(--primary); background: #fff; box-shadow: 0 0 0 3px rgba(11,95,255,.12);
}
.form-tip { font-size: 12px; color: var(--ink-3); text-align: center; margin-top: 12px; }
.form-error { background: #fdecec; color: #c0392b; padding: 12px 16px; border-radius: 9px; font-size: 14px; margin-bottom: 16px; }
.form-success { text-align: center; padding: 30px 10px; }
.form-success-icon {
  width: 60px; height: 60px; border-radius: 50%; margin: 0 auto 18px;
  background: #e6f7ee; color: #10b981; font-size: 28px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.form-success h4 { font-size: 20px; margin-bottom: 10px; }
.form-success p { color: var(--ink-2); margin-bottom: 22px; }

/* ---------------- CTA ---------------- */
.cta-band { background: linear-gradient(120deg, #0a3d91, #0b5fff); color: #fff; padding: 60px 0; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.cta-inner h2 { font-size: 26px; font-weight: 800; margin-bottom: 8px; }
.cta-inner p { opacity: .9; }

/* ---------------- 404 ---------------- */
.notfound { padding: 110px 0; }
.nf-code { font-size: 110px; font-weight: 800; color: #dbe8ff; line-height: 1; }
.notfound h1 { font-size: 26px; margin: 16px 0 8px; }
.notfound p { color: var(--ink-2); margin-bottom: 24px; }

/* ---------------- 页脚 ---------------- */
.site-footer { background: #101828; color: #cbd2e0; }
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px; padding: 56px 24px 40px;
}
.logo-footer { margin-bottom: 16px; }
.footer-brand p { font-size: 13.5px; color: #94a3b8; margin-bottom: 16px; line-height: 1.8; }
.footer-contact { display: flex; flex-direction: column; gap: 6px; }
.footer-contact a { color: #cbd2e0; font-size: 14px; }
.footer-contact a:hover { color: #fff; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { color: #94a3b8; font-size: 14px; transition: all .2s; }
.footer-col ul a:hover { color: #fff; padding-left: 4px; }
.footer-cta p { font-size: 13.5px; color: #94a3b8; margin-bottom: 14px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08); padding: 18px 24px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  font-size: 13px; color: #7d8ba1;
}
.footer-bottom a:hover { color: #fff; }

/* ---------------- 浮动咨询 ---------------- */
.float-consult {
  position: fixed; right: 24px; bottom: 40px; z-index: 40;
  display: flex; align-items: center; gap: 8px; white-space: nowrap;
  background: var(--primary); color: #fff; border-radius: 999px;
  padding: 12px 18px; box-shadow: 0 8px 24px rgba(11,95,255,.4);
  font-size: 14px; font-weight: 600; transition: all .25s;
}
.float-consult span { white-space: nowrap; }
.float-consult:hover { transform: translateY(-4px); background: var(--primary-dark); }

/* ---------------- 咨询弹窗 ---------------- */
.inquiry-mask {
  position: fixed; inset: 0; z-index: 999;
  background: rgba(8, 20, 45, .55); backdrop-filter: blur(3px);
  display: none; align-items: center; justify-content: center; padding: 20px;
}
.inquiry-mask.show { display: flex; animation: inquiryFade .25s ease; }
@keyframes inquiryFade { from { opacity: 0; } to { opacity: 1; } }
.inquiry-modal {
  background: #fff; border-radius: 16px; width: 100%; max-width: 430px;
  position: relative; padding: 30px 30px 24px; max-height: 92vh; overflow-y: auto;
  box-shadow: 0 24px 70px rgba(8, 25, 60, .3); animation: inquiryPop .28s cubic-bezier(.2, .9, .3, 1.2);
}
@keyframes inquiryPop { from { opacity: 0; transform: translateY(18px) scale(.97); } to { opacity: 1; transform: none; } }
.inquiry-close {
  position: absolute; top: 14px; right: 14px; width: 32px; height: 32px;
  border: none; border-radius: 50%; background: #f1f4f9; color: #5b6472;
  font-size: 19px; line-height: 1; cursor: pointer; transition: all .2s;
}
.inquiry-close:hover { background: #e5eaf2; color: #1c2330; }
.inquiry-body h3 { font-size: 21px; font-weight: 800; color: #1c2330; margin-bottom: 6px; }
.inquiry-sub { font-size: 13.5px; color: var(--ink-2); margin-bottom: 20px; }
.inquiry-field { margin-bottom: 14px; }
.inquiry-field label { display: block; font-size: 13.5px; font-weight: 600; color: #3a4253; margin-bottom: 6px; }
.inquiry-field label em { color: #e5484d; font-style: normal; }
.inquiry-field input,
.inquiry-field select {
  width: 100%; height: 44px; padding: 0 14px; border: 1px solid #dbe1ec;
  border-radius: 10px; font-size: 14.5px; color: #1c2330; background: #fbfcfe;
  transition: all .2s; outline: none;
}
.inquiry-field input:focus,
.inquiry-field select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(11,95,255,.12); background: #fff; }
.inquiry-error {
  display: none; background: #fef2f2; color: #c93a3a; border: 1px solid #fad7d7;
  border-radius: 10px; padding: 9px 14px; font-size: 13.5px; margin-bottom: 14px;
}
.inquiry-tip { font-size: 12px; color: #98a0b3; margin-top: 12px; text-align: center; }
.inquiry-success-icon {
  display: block; width: 56px; height: 56px; margin: 8px auto 16px;
  border-radius: 50%; background: #e8f7ef; color: #0b7a4b;
  font-size: 28px; font-weight: 700; line-height: 56px; text-align: center;
}
.inquiry-body #inquirySuccess { text-align: center; padding: 12px 6px 4px; }
.inquiry-body #inquirySuccess h3 { font-size: 22px; }
.inquiry-body #inquirySuccess p { color: var(--ink-2); font-size: 14px; margin-bottom: 8px; }
.inquiry-email-hint { font-size: 12.5px !important; }
#inqSubmit:disabled { opacity: .6; cursor: wait; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1024px) {
  .card-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .client-grid { grid-template-columns: repeat(3, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .help-spot-grid { grid-template-columns: 1fr; gap: 36px; }
  .article-layout { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .main-nav {
    position: fixed; top: 66px; left: 0; right: 0; z-index: 49;
    background: #fff; flex-direction: column; padding: 12px 20px 20px;
    border-bottom: 1px solid var(--line); gap: 2px;
    transform: translateY(-130%); opacity: 0; transition: all .3s;
    box-shadow: 0 20px 40px rgba(0,0,0,.08);
  }
  .main-nav.open { transform: translateY(0); opacity: 1; }
  .main-nav a { padding: 12px 10px; font-size: 16px; border-radius: 10px; }
  .nav-toggle { display: flex; }
  .header-right .btn { display: none; }
  .hero-slide { padding: 60px 0 80px; }
  .hero-content h1 { font-size: 32px; }
  .hero-content p { font-size: 15.5px; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 56px 0; }
  .section-title { font-size: 26px; }
  .card-grid-2, .card-grid-3, .card-grid-4, .news-grid { grid-template-columns: 1fr; }
  .client-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-inner { flex-direction: column; text-align: center; }
  .page-hero h1 { font-size: 30px; }
  .form-row { grid-template-columns: 1fr; }
  .article-content { padding: 24px 20px; }
  .footer-grid { grid-template-columns: 1fr; padding: 40px 24px 24px; }
  /* 移动端：右下角在线咨询保持可见，改为横向胶囊，文本不换行 */
  .float-consult {
    right: 14px; bottom: 16px; padding: 10px 15px; gap: 7px;
    font-size: 13.5px; border-radius: 999px;
  }
  .float-consult svg { width: 20px; height: 20px; }
}

/* ---------------- 平板：更早切换为汉堡菜单，避免服务栏目换行 ---------------- */
@media (max-width: 1024px) {
  .main-nav {
    display: none;  /* 修复：移动端从 flex 流中彻底脱离，避免横向溢出 */
    position: fixed; top: 66px; left: 0; right: 0; z-index: 49;
    background: #fff; flex-direction: column; padding: 12px 20px 20px;
    border-bottom: 1px solid var(--line); gap: 2px;
    transform: translateY(-130%); opacity: 0; transition: all .3s;
    box-shadow: 0 20px 40px rgba(0,0,0,.08);
  }
  .main-nav.open { display: flex; transform: translateY(0); opacity: 1; }
  .main-nav a { padding: 12px 10px; font-size: 16px; border-radius: 10px; white-space: nowrap; }
  .nav-toggle { display: flex; }
  .header-right .btn { display: none; }
  /* 修复：长站名（flex-shrink:0）把 header-right 推出 viewport 导致 25px 横向溢出 */
  .logo { flex-shrink: 1; min-width: 0; }
  .logo-text { min-width: 0; }
  .logo-name { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .logo-en { display: none; }
  .float-consult {
    right: 16px; bottom: 18px; padding: 11px 16px; gap: 8px;
    font-size: 14px; border-radius: 999px;
  }
  .float-consult svg { width: 22px; height: 22px; }
}

/* ---------------- 首页 400 服务热线（醒目·闪动） ---------------- */
.phone400-band {
  background: linear-gradient(120deg, #0a3d91, #0b5fff 60%, #4d94ff);
  color: #fff; padding: 14px 0;
  box-shadow: 0 6px 20px rgba(10,40,90,.18);
}
.phone400-inner { display: flex; align-items: center; justify-content: center; gap: 22px; flex-wrap: wrap; }
.phone400-text { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; justify-content: center; }
.phone400-label { font-size: 14px; opacity: .9; letter-spacing: .5px; }
.phone400-num {
  font-size: 34px; font-weight: 800; letter-spacing: 1px; color: #fff;
  line-height: 1.1; position: relative; display: inline-block;
  animation: phonePulse 1.4s ease-in-out infinite;
}
.phone400-num::before { content: "\1F4DE"; margin-right: 8px; font-size: 26px; vertical-align: -2px; }
@keyframes phonePulse {
  0%, 100% { text-shadow: 0 0 0 rgba(255,255,255,0); transform: scale(1); }
  50% { text-shadow: 0 0 18px rgba(255,255,255,.85); transform: scale(1.04); }
}
.phone400-cta { box-shadow: 0 6px 18px rgba(0,0,0,.18); }
@media (max-width: 768px) {
  .phone400-num { font-size: 26px; }
  .phone400-inner { gap: 12px; }
  .phone400-label { font-size: 12.5px; }
}

/* ============================================================
   GEO 配套样式（追加：sr-only / 面包屑 / hero h2 / 实体摘要段 / 404 出口）
   ============================================================ */

/* 屏幕阅读器专用（AI 引擎也能读到 h2 结构） */
.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* 面包屑（只占单行，避免双行 bug） */
.breadcrumb {
  background: var(--bg-gray);
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  color: var(--ink-2);
  padding: 10px 0;
}
.breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  margin: 0; padding: 0;
}
.breadcrumb li {
  display: flex;
  align-items: center;
  line-height: 1.4;
}
.breadcrumb li + li::before {
  content: "/";
  margin: 0 8px;
  color: var(--ink-3);
  user-select: none;
}
.breadcrumb a {
  color: var(--ink-2);
  text-decoration: none;
  transition: color .15s;
}
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb li[aria-current="page"] {
  color: var(--ink);
  font-weight: 500;
  max-width: 60ch;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Hero 轮播的 h2（非首帧）继承首帧 h1 的视觉权重，但语义层级降低 */
.hero-content h1,
.hero-content h2 {
  font-size: 46px;
  font-weight: 800;
  color: #fff;
  line-height: 1.25;
  margin: 0 0 18px;
  letter-spacing: -.5px;
  text-shadow: 0 2px 16px rgba(10,40,90,.18);
}
@media (max-width: 768px) {
  .hero-content h1,
  .hero-content h2 { font-size: 28px; }
}

/* 实体摘要段：AI 引擎抓取"机构主体"语义的关键可见文本 */
.section-about {
  padding: 28px 0 18px;
  background: var(--bg);
}
.about-summary {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-2);
  margin: 0;
  max-width: 1080px;
}
.about-summary b {
  color: var(--ink);
  font-weight: 600;
}
.about-summary a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}
.about-summary a:hover { text-decoration: underline; }

/* 404 出口按钮组 */
.nf-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 8px;
}

/* ============================================================
   帮助中心（原「GEO 优化」栏目改造：搜索 + 分类筛选 + 常见问题）
   ============================================================ */

.help-search {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 620px;
  margin: 24px 0 12px;
  padding: 6px 6px 6px 18px;
  background: #fff;
  border-radius: 999px;
  box-shadow: 0 14px 34px rgba(6, 26, 64, .22);
}
.help-search-icon { display: flex; flex: none; color: var(--primary); }
.help-search input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  font-size: 15px;
  color: var(--ink);
  padding: 12px 0;
}
.help-search input::placeholder { color: var(--ink-3); }
.help-search input::-webkit-search-cancel-button { display: none; }
.help-search-clear {
  flex: none;
  border: 0;
  cursor: pointer;
  background: var(--bg-gray);
  color: var(--ink-2);
  font: inherit;
  font-size: 13px;
  padding: 9px 15px;
  border-radius: 999px;
  transition: background .2s;
}
.help-search-clear:hover { background: #e4eaf6; }
.help-search-tip { font-size: 13.5px; opacity: .92; }
.help-search-tip b { font-weight: 700; }
.help-search-tip a { color: #fff; font-weight: 600; text-decoration: underline; }

/* 分类卡：整块可点，点一次筛选、再点取消 */
.help-cat {
  width: 100%;
  text-align: left;
  font: inherit;
  color: inherit;
  cursor: pointer;
  appearance: none;
}
.help-cat h3 { color: var(--ink); }
.help-cat p { color: var(--ink-2); }
.help-cat.active {
  border-color: var(--primary);
  box-shadow: 0 12px 28px rgba(11, 95, 255, .18);
  transform: translateY(-3px);
}
.help-cat.active .feat-icon { background: linear-gradient(135deg, #0b5fff, #4d94ff); color: #fff; }

.help-empty { text-align: center; color: var(--ink-3); font-size: 14px; padding: 28px 0 4px; }
.help-hit { text-align: center; color: var(--primary); font-size: 13.5px; font-weight: 500; margin-top: 18px; }
.help-cat[hidden], .faq-item[hidden] { display: none !important; }

@media (max-width: 768px) {
  .help-search { padding: 5px 5px 5px 15px; }
  .help-search input { font-size: 14px; padding: 11px 0; }
  .help-search-clear { padding: 8px 12px; font-size: 12.5px; }
  .help-search-tip { font-size: 12.5px; }
}