/* ==========================================================================
   回世科技 HuiShiIT 官网 — 全局样式
   设计语言:Structured Confidence(深墨蓝 + 科技蓝,大留白,克制动效)
   ========================================================================== */

/* V3:Aurora Tech 显示字体 Sora(@import 依 CSS 规范须位于全部规则之前,故置于
   文件顶部注释区之后;仅 latin 字重 400/600/700,中文自动回退系统字体) */
@import url("https://fonts.googleapis.com/css2?family=Sora:wght@400;600;700&display=swap");

:root {
  --primary: #0a5edb;
  --primary-dark: #0847ad;
  --primary-deep: #062e73;
  --ink: #0b1526;
  --ink-2: #101d33;
  --text: #171e2b;
  --muted: #5b6472;
  --muted-2: #8a93a2;
  --line: #e6eaf1;
  --bg: #f5f7fa;
  --white: #ffffff;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 10px rgba(11, 21, 38, 0.06);
  --shadow-md: 0 12px 32px rgba(11, 21, 38, 0.10);
  --shadow-lg: 0 24px 56px rgba(11, 21, 38, 0.16);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --font: -apple-system, "SF Pro SC", "PingFang SC", "HarmonyOS Sans SC",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

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

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

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }

::selection { background: rgba(10, 94, 219, 0.18); }

/* --------------------------------------------------------------------------
   布局工具
   -------------------------------------------------------------------------- */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 104px 0; }
.section--gray { background: var(--bg); }
.section--tight { padding: 72px 0; }

.section-head {
  max-width: 760px;
  margin: 0 auto 60px;
  text-align: center;
}

.section-head--left {
  margin-left: 0;
  text-align: left;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 14px;
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.section-head--left .eyebrow::before { width: 28px; }

.section-head h2 {
  font-size: clamp(28px, 3.4vw, 38px);
  line-height: 1.3;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.01em;
}

.section-desc {
  margin-top: 16px;
  font-size: 16.5px;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   按钮
   -------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 32px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.4;
  border-radius: 8px;
  border: 1.5px solid transparent;
  transition: all 0.3s var(--ease);
  white-space: nowrap;
}

.btn svg { width: 17px; height: 17px; }

.btn-primary {
  background: var(--primary);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(10, 94, 219, 0.32);
}

.btn-light {
  background: var(--white);
  color: var(--primary);
}

.btn-light:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(0, 0, 0, 0.22);
}

.btn-outline {
  border-color: rgba(255, 255, 255, 0.55);
  color: var(--white);
}

.btn-outline:hover {
  border-color: var(--white);
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.btn-lg { padding: 15px 38px; font-size: 16px; }

/* --------------------------------------------------------------------------
   顶部工具条
   -------------------------------------------------------------------------- */

.topbar {
  background: var(--ink);
  color: rgba(255, 255, 255, 0.78);
  font-size: 13px;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 38px;
}

.topbar-links {
  display: flex;
  align-items: center;
  gap: 18px;
}

.topbar-links a { transition: color 0.25s; }
.topbar-links a:hover { color: var(--white); }

.topbar .sep {
  width: 1px;
  height: 12px;
  background: rgba(255, 255, 255, 0.22);
}

/* --------------------------------------------------------------------------
   主导航
   -------------------------------------------------------------------------- */

.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}

.navbar.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 6px 24px rgba(11, 21, 38, 0.07);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-mark { width: 40px; height: 40px; }

.brand-text { display: flex; flex-direction: column; line-height: 1.2; }

.brand-cn {
  font-size: 21px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.06em;
}

.brand-en {
  font-size: 11px;
  font-weight: 600;
  color: var(--muted-2);
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-menu a {
  position: relative;
  display: block;
  padding: 10px 18px;
  font-size: 15.5px;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  transition: color 0.25s;
}

.nav-menu a::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}

.nav-menu a:hover { color: var(--primary); }

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

.nav-menu a.active {
  color: var(--primary);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 9px;
  background: none;
  border: 0;
}

.nav-toggle span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform 0.3s var(--ease), opacity 0.3s;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* --------------------------------------------------------------------------
   首页 Hero
   -------------------------------------------------------------------------- */

.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 620px;
  padding: 140px 0 180px;
  color: var(--white);
  background:
    linear-gradient(105deg, rgba(6, 17, 38, 0.88) 0%, rgba(8, 30, 72, 0.62) 52%, rgba(10, 94, 219, 0.30) 100%),
    url("https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=Cinematic%20wide%20shot%20of%20a%20modern%20software%20company%20office%20at%20dusk,%20rows%20of%20sleek%20workstations%20with%20glowing%20code%20on%20large%20monitors,%20deep%20navy%20blue%20ambient%20lighting,%20professional%20corporate%20photography,%20moody%20high-end%20technology%20atmosphere&image_size=landscape_16_9")
    center / cover no-repeat, var(--ink);
}

.hero-inner { max-width: 720px; }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: #9cc4ff;
  border: 1px solid rgba(156, 196, 255, 0.35);
  border-radius: 999px;
  background: rgba(10, 94, 219, 0.18);
  margin-bottom: 28px;
}

.hero-title {
  font-size: clamp(34px, 5vw, 58px);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: 0.015em;
  margin-bottom: 24px;
}

.hero-title em {
  font-style: normal;
  color: #6ea8ff;
}

.hero-desc {
  max-width: 560px;
  font-size: 17.5px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 40px;
}

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

/* Hero 入场:eyebrow → 标题 → 描述 → 按钮,依次接续 */
.js .hero-eyebrow,
.js .hero-title,
.js .hero-desc,
.js .hero-actions { opacity: 0; animation: fadeUp 0.8s var(--ease) forwards; }

.js .hero-eyebrow { animation-delay: 0.1s; }
.js .hero-title { animation-delay: 0.24s; }
.js .hero-desc { animation-delay: 0.38s; }
.js .hero-actions { animation-delay: 0.52s; }

/* --------------------------------------------------------------------------
   数据统计条(与 Hero 底部叠合)
   -------------------------------------------------------------------------- */

.stats { position: relative; z-index: 5; margin-top: -84px; padding-bottom: 8px; }

.stats-card {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 40px 24px;
}

.stat {
  text-align: center;
  padding: 4px 12px;
  border-right: 1px solid var(--line);
}

.stat:last-child { border-right: 0; }

.stat-num {
  font-size: 44px;
  font-weight: 700;
  line-height: 1.15;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.stat-num .suffix { font-size: 26px; margin-left: 2px; }

.stat-label {
  margin-top: 8px;
  font-size: 14.5px;
  color: var(--muted);
  letter-spacing: 0.06em;
}

/* --------------------------------------------------------------------------
   通用卡片网格(核心业务)
   -------------------------------------------------------------------------- */

.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.card {
  display: flex;
  flex-direction: column;
  padding: 36px 30px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease),
    border-color 0.35s var(--ease);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(10, 94, 219, 0.35);
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  color: var(--primary);
  background: rgba(10, 94, 219, 0.08);
  transition: background 0.35s var(--ease), color 0.35s var(--ease);
  margin-bottom: 24px;
}

.card-icon svg { width: 26px; height: 26px; }

.card:hover .card-icon {
  background: var(--primary);
  color: var(--white);
}

.card-title {
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 12px;
}

.card-desc {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
  flex: 1;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}

.card-link svg { width: 15px; height: 15px; transition: transform 0.3s var(--ease); }
.card:hover .card-link svg { transform: translateX(4px); }

/* --------------------------------------------------------------------------
   图文分栏(为什么选择我们 / 关于预览)
   -------------------------------------------------------------------------- */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

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

.split-media img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4 / 3; }

.split-media::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: inherit;
  pointer-events: none;
}

.split-body h2 {
  font-size: clamp(26px, 3vw, 34px);
  line-height: 1.35;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 18px;
}

.split-body > p {
  color: var(--muted);
  margin-bottom: 32px;
}

.feature-item {
  display: flex;
  gap: 18px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.feature-item:last-of-type { border-bottom: 0; }

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: rgba(10, 94, 219, 0.09);
  color: var(--primary);
}

.feature-icon svg { width: 22px; height: 22px; }

.feature-item h3 {
  font-size: 17.5px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 6px;
}

.feature-item p {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   新闻动态(列表条目)
   -------------------------------------------------------------------------- */

.news-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-item {
  display: flex;
  flex-direction: column;
  padding: 32px 30px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.news-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.news-date {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.news-tag {
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(10, 94, 219, 0.08);
  color: var(--primary);
  letter-spacing: 0.04em;
}

.news-title {
  font-size: 17.5px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink);
  margin-bottom: 12px;
}

.news-excerpt {
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
  flex: 1;
}

/* --------------------------------------------------------------------------
   CTA 横幅
   -------------------------------------------------------------------------- */

.cta-banner {
  position: relative;
  padding: 84px 0;
  color: var(--white);
  background:
    linear-gradient(115deg, var(--primary-deep) 0%, var(--primary) 58%, #1a6ff0 100%);
  overflow: hidden;
}

.cta-banner::before {
  content: "";
  position: absolute;
  right: -120px;
  top: -160px;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.07);
  pointer-events: none;
}

.cta-banner::after {
  content: "";
  position: absolute;
  right: 60px;
  bottom: -200px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  pointer-events: none;
}

.cta-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.cta-inner h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 10px;
}

.cta-inner p {
  color: rgba(255, 255, 255, 0.78);
  font-size: 15.5px;
}

/* --------------------------------------------------------------------------
   子页面 Hero
   -------------------------------------------------------------------------- */

.page-hero {
  position: relative;
  padding: 88px 0 84px;
  color: var(--white);
  background:
    radial-gradient(900px 420px at 85% -10%, rgba(26, 111, 240, 0.55) 0%, rgba(26, 111, 240, 0) 60%),
    linear-gradient(120deg, var(--ink) 0%, var(--ink-2) 55%, #0c2244 100%);
  overflow: hidden;
}

.page-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0.02));
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 22px;
  letter-spacing: 0.05em;
}

.breadcrumb a { color: rgba(255, 255, 255, 0.55); transition: color 0.25s; }
.breadcrumb a:hover { color: var(--white); }
.breadcrumb .sep { color: rgba(255, 255, 255, 0.3); }

.page-hero h1 {
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.015em;
  margin-bottom: 14px;
}

.page-hero-desc {
  max-width: 640px;
  font-size: 16.5px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.72);
}

/* --------------------------------------------------------------------------
   发展历程时间线
   -------------------------------------------------------------------------- */

.timeline {
  position: relative;
  max-width: 880px;
  margin: 0 auto;
  padding-left: 36px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--primary) 0%, rgba(10, 94, 219, 0.12) 100%);
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  padding: 0 0 44px 32px;
}

.timeline-item:last-child { padding-bottom: 0; }

.timeline-item::before {
  content: "";
  position: absolute;
  left: -36px;
  top: 7px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--white);
  border: 3.5px solid var(--primary);
  box-shadow: 0 0 0 5px rgba(10, 94, 219, 0.12);
}

.timeline-year {
  font-size: 26px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 8px;
  font-variant-numeric: tabular-nums;
}

.timeline-item h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}

.timeline-item p {
  max-width: 620px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   管理团队
   -------------------------------------------------------------------------- */

.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.team-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

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

.team-photo { aspect-ratio: 4 / 3.4; overflow: hidden; background: var(--bg); }

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

.team-card:hover .team-photo img { transform: scale(1.045); }

.team-body { padding: 28px 28px 30px; text-align: center; }

.team-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.06em;
}

.team-role {
  position: relative;
  display: inline-block;
  margin: 10px 0 16px;
  padding: 4px 16px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--primary);
  background: rgba(10, 94, 219, 0.08);
  border-radius: 999px;
}

.team-bio {
  font-size: 14px;
  line-height: 1.9;
  color: var(--muted);
  text-align: left;
}

/* --------------------------------------------------------------------------
   价值观
   -------------------------------------------------------------------------- */

.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.value-card {
  padding: 34px 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-align: center;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

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

.value-num {
  font-size: 15px;
  font-weight: 700;
  color: rgba(10, 94, 219, 0.45);
  letter-spacing: 0.2em;
  margin-bottom: 14px;
}

.value-card h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}

.value-card p {
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   产品服务:服务网格
   -------------------------------------------------------------------------- */

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  display: flex;
  flex-direction: column;
  padding: 38px 32px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease),
    border-color 0.35s var(--ease);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(10, 94, 219, 0.35);
}

.service-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  border-radius: 15px;
  color: var(--primary);
  background: rgba(10, 94, 219, 0.08);
  margin-bottom: 24px;
  transition: background 0.35s var(--ease), color 0.35s var(--ease);
}

.service-icon svg { width: 27px; height: 27px; }

.service-card:hover .service-icon {
  background: var(--primary);
  color: var(--white);
}

.service-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 12px;
}

.service-card > p {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
  margin-bottom: 20px;
}

.service-points li {
  position: relative;
  padding: 7px 0 7px 24px;
  font-size: 14px;
  color: var(--text);
}

.service-points li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 15px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--primary);
  transform: rotate(45deg);
  opacity: 0.75;
}

/* --------------------------------------------------------------------------
   精选方案(大图文卡,交错方向)
   -------------------------------------------------------------------------- */

.showcase {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 64px;
  align-items: center;
  padding: 72px 0;
}

.showcase + .showcase { padding-top: 0; }

.showcase--reverse .showcase-media { order: 2; }

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

.showcase-media img { width: 100%; aspect-ratio: 16 / 11; object-fit: cover; }

.showcase-body .tag-line {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.showcase-body h3 {
  font-size: clamp(23px, 2.6vw, 30px);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.4;
  margin-bottom: 16px;
}

.showcase-body > p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
  margin-bottom: 24px;
}

.showcase-points {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 28px;
  margin-bottom: 30px;
}

.showcase-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14.5px;
  color: var(--text);
}

.showcase-points svg {
  flex-shrink: 0;
  width: 17px;
  height: 17px;
  color: var(--primary);
}

/* --------------------------------------------------------------------------
   服务流程
   -------------------------------------------------------------------------- */

.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
  counter-reset: step;
}

.process-step {
  position: relative;
  padding: 30px 22px 26px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.process-step:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  background: rgba(10, 94, 219, 0.09);
  margin-bottom: 18px;
}

.process-step h3 {
  font-size: 16.5px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}

.process-step p {
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   技术能力
   -------------------------------------------------------------------------- */

.tech-wrap {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.tech-group {
  padding: 28px 30px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.tech-group h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 18px;
}

.tech-group h3 svg { width: 19px; height: 19px; color: var(--primary); }

.tech-tags { display: flex; flex-wrap: wrap; gap: 10px; }

.tag {
  padding: 7px 16px;
  font-size: 13.5px;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  transition: all 0.25s var(--ease);
}

.tag:hover {
  color: var(--primary);
  border-color: rgba(10, 94, 219, 0.4);
  background: rgba(10, 94, 219, 0.06);
}

/* --------------------------------------------------------------------------
   联系页
   -------------------------------------------------------------------------- */

.contact-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 88px;
}

.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 40px 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

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

.contact-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  color: var(--primary);
  background: rgba(10, 94, 219, 0.08);
  margin-bottom: 20px;
}

.contact-icon svg { width: 25px; height: 25px; }

.contact-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 10px;
}

.contact-card p {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

.contact-card a {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--primary);
  transition: color 0.25s;
}

.contact-card a:hover { color: var(--primary-dark); }

.contact-layout {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 40px;
  align-items: start;
}

.contact-form {
  padding: 44px 42px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.contact-form h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}

.contact-form > p {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 30px;
}

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

.form-group { margin-bottom: 20px; }

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.form-group label .req { color: #d64545; margin-left: 3px; }

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 15px;
  font-family: inherit;
  font-size: 14.5px;
  color: var(--text);
  background: var(--white);
  border: 1.5px solid var(--line);
  border-radius: 9px;
  outline: none;
  transition: border-color 0.25s, box-shadow 0.25s;
  appearance: none;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%235b6472' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
}

.form-group textarea { min-height: 120px; resize: vertical; }

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3.5px rgba(10, 94, 219, 0.12);
}

.form-group.has-error input,
.form-group.has-error select,
.form-group.has-error textarea { border-color: #d64545; }

.form-error {
  display: none;
  font-size: 12.5px;
  color: #d64545;
  margin-top: 6px;
}

.form-group.has-error .form-error { display: block; }

.contact-form .btn { width: 100%; margin-top: 6px; }

.btn.is-loading { opacity: 0.7; pointer-events: none; }

.form-success {
  display: none;
  padding: 20px;
  border-radius: 10px;
  background: rgba(22, 143, 96, 0.08);
  border: 1px solid rgba(22, 143, 96, 0.3);
  color: #157a52;
  font-size: 14.5px;
  line-height: 1.8;
  margin-bottom: 24px;
}

.form-success.show { display: block; }

.contact-aside {
  padding: 38px 34px;
  background: linear-gradient(150deg, var(--ink) 0%, #10234a 100%);
  border-radius: var(--radius);
  color: var(--white);
}

.contact-aside h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 26px;
}

.aside-item {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.aside-item:last-child { border-bottom: 0; }

.aside-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.09);
  color: #7fa9f5;
}

.aside-icon svg { width: 19px; height: 19px; }

.aside-item h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
  color: rgba(255, 255, 255, 0.92);
}

.aside-item p {
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.62);
}

/* --------------------------------------------------------------------------
   页脚
   -------------------------------------------------------------------------- */

.site-footer {
  background: var(--ink);
  color: rgba(255, 255, 255, 0.66);
  padding: 72px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 56px;
}

.footer-brand .brand-cn { color: var(--white); }
.footer-brand .brand-en { color: rgba(255, 255, 255, 0.4); }

.footer-brand p {
  margin-top: 20px;
  font-size: 14px;
  line-height: 1.9;
  max-width: 300px;
}

.footer-col h4 {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.06em;
  margin-bottom: 22px;
}

.footer-links li { margin-bottom: 12px; }

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.25s, padding-left 0.25s var(--ease);
}

.footer-links a:hover {
  color: var(--white);
  padding-left: 4px;
}

.footer-contact li {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 14px;
  line-height: 1.7;
}

.footer-contact svg {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  margin-top: 5px;
  color: #7fa9f5;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 22px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.42);
}

.footer-bottom .links { display: flex; gap: 20px; }
.footer-bottom a { transition: color 0.25s; }
.footer-bottom a:hover { color: rgba(255, 255, 255, 0.75); }

/* --------------------------------------------------------------------------
   回到顶部
   -------------------------------------------------------------------------- */

.back-top {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 90;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 0;
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 10px 26px rgba(10, 94, 219, 0.38);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.35s var(--ease), transform 0.35s var(--ease),
    visibility 0.35s, background 0.25s;
}

.back-top svg { width: 19px; height: 19px; }

.back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { background: var(--primary-dark); }

/* --------------------------------------------------------------------------
   滚动显现(fail-open:无 JS 时内容直接可见)
   -------------------------------------------------------------------------- */

.js .reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.75s var(--ease), transform 0.75s var(--ease);
  transition-delay: calc(var(--d, 0) * 90ms);
}

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

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(26px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --------------------------------------------------------------------------
   响应式
   -------------------------------------------------------------------------- */

@media (max-width: 1080px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(3, 1fr); row-gap: 20px; }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (max-width: 860px) {
  .section { padding: 80px 0; }

  .topbar .sep { display: none; }

  .nav-toggle { display: flex; }

  /* ---- 移动端菜单:卡片浮层 + 展开动画 ---------------------------------- */
  .nav-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 12px;
    right: 12px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 10px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 16px;
    box-shadow: 0 24px 48px -12px rgba(11, 21, 38, 0.22);
    /* 常驻占位,以 max-height/opacity/transform 过渡实现展开收起动画 */
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transform: translateY(-10px) scale(0.98);
    transform-origin: top right;
    visibility: hidden;
    pointer-events: none;
    transition: max-height 0.42s var(--ease), opacity 0.3s var(--ease),
      transform 0.42s var(--ease), visibility 0s 0.42s;
  }

  .nav-menu.open {
    max-height: 680px;
    opacity: 1;
    transform: translateY(0) scale(1);
    visibility: visible;
    pointer-events: auto;
    transition: max-height 0.42s var(--ease), opacity 0.3s var(--ease) 0.08s,
      transform 0.42s var(--ease), visibility 0s;
  }

  /* 菜单项错峰入场:展开时逐项下落渐显,收起时统一快速退出 */
  .nav-menu > li {
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 0.26s var(--ease), transform 0.26s var(--ease);
  }
  .nav-menu.open > li { opacity: 1; transform: none; }
  .nav-menu.open > li:nth-child(1) { transition-delay: 0.05s; }
  .nav-menu.open > li:nth-child(2) { transition-delay: 0.09s; }
  .nav-menu.open > li:nth-child(3) { transition-delay: 0.13s; }
  .nav-menu.open > li:nth-child(4) { transition-delay: 0.17s; }
  .nav-menu.open > li:nth-child(5) { transition-delay: 0.21s; }
  .nav-menu.open > li:nth-child(6) { transition-delay: 0.25s; }
  .nav-menu.open > li:nth-child(7) { transition-delay: 0.29s; }

  /* 主菜单项:圆角按压反馈,去掉通栏分隔线 */
  .nav-menu > li > a {
    padding: 12px 14px;
    border-bottom: 0;
    border-radius: 10px;
    font-size: 15px;
    transition: background 0.2s, color 0.2s;
  }
  .nav-menu > li > a:active { background: rgba(10, 94, 219, 0.07); color: var(--primary); }
  .nav-menu > li > a::after { display: none; }

  /* 二级菜单:浅底圆角容器内双列平铺(触屏无 hover,常驻展开) */
  .nav-menu .dropdown {
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2px;
    min-width: 0;
    margin: 2px 0 8px;
    padding: 8px;
    background: var(--bg);
    border: 0;
    border-radius: 12px;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    transition: none;
  }
  .nav-menu .dropdown a {
    padding: 8px 10px;
    border-bottom: 0;
    border-radius: 8px;
    font-size: 13.5px;
    color: var(--muted);
    transition: color 0.2s, background 0.2s;
  }
  .nav-menu .dropdown a:active {
    background: var(--white);
    color: var(--primary);
  }
  /* 触屏不需要 hover 桥接与展开箭头 */
  .nav-menu > li::after { display: none; }
  .nav-menu > li.has-dropdown > a::before { display: none; }
  .nav-menu > li.has-dropdown > a { padding-right: 14px; }

  .hero { min-height: 0; padding: 110px 0 150px; }
  .hero-desc { font-size: 16px; }

  .stats-card { grid-template-columns: repeat(2, 1fr); padding: 28px 16px; gap: 18px 0; }
  .stat:nth-child(2) { border-right: 0; }
  .stat { padding: 14px 8px; }
  .stat-num { font-size: 36px; }
  .stats { margin-top: -64px; }

  .split, .showcase, .contact-layout { grid-template-columns: 1fr; gap: 44px; }
  .showcase--reverse .showcase-media { order: 0; }
  .split-media::after { display: none; }

  .news-list { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; margin-bottom: 64px; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 34px 26px; }
  .tech-wrap { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .showcase-points { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .section { padding: 64px 0; }
  .cards-grid, .services-grid, .values-grid, .team-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .topbar-inner { justify-content: center; }
  .topbar-welcome { display: none; }
  .stats-card { grid-template-columns: 1fr 1fr; }
  .hero-actions .btn { width: 100%; }
}

/* --------------------------------------------------------------------------
   减少动态效果偏好
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .js .reveal { opacity: 1; transform: none; }
}

/* ==========================================================================
   V2 扩展:二级下拉导航 / 合作伙伴墙 / 评价轮播 / FAQ / 进度环
   ========================================================================== */

/* ---- 二级下拉导航(桌面 hover,移动端常驻) -------------------------------- */

.nav-menu > li { position: relative; flex-shrink: 0; }
.nav-menu a { padding: 10px 14px; }

/* 报价按钮移除后,桌面端导航适度加宽(保证单行不折行) */
@media (min-width: 861px) {
  .nav-menu { gap: 6px; }
  .nav-menu a { padding: 10px 18px; }
}

.dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 168px;
  padding: 10px 0;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.28s var(--ease), transform 0.28s var(--ease),
    visibility 0.28s;
  z-index: 50;
}

/* 悬停桥接,防止移动到下拉时消失 */
.nav-menu > li::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 8px;
}

.nav-menu > li:hover .dropdown,
.nav-menu > li:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown a {
  display: block;
  padding: 9px 22px;
  font-size: 14px;
  color: var(--muted);
  transition: color 0.22s, background 0.22s, padding-left 0.22s var(--ease);
}

.dropdown a:hover {
  color: var(--primary);
  background: rgba(10, 94, 219, 0.05);
  padding-left: 27px;
}

/* 下拉指示箭头 */
.nav-menu > li.has-dropdown > a { padding-right: 26px; }

.nav-menu > li.has-dropdown > a::before {
  content: "";
  position: absolute;
  right: 12px;
  top: 50%;
  width: 6px;
  height: 6px;
  border-right: 1.6px solid currentColor;
  border-bottom: 1.6px solid currentColor;
  transform: translateY(-70%) rotate(45deg);
  opacity: 0.55;
  pointer-events: none;
}

/* ---- 合作伙伴 logo 墙 ----------------------------------------------------- */

.partners-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.partner-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 88px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease),
    transform 0.3s var(--ease);
}

.partner-item:hover {
  border-color: rgba(10, 94, 219, 0.35);
  box-shadow: var(--shadow-sm);
  transform: translateY(-3px);
}

.partner-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  font-size: 15px;
  font-weight: 700;
  color: #9aa5b5;
  background: var(--bg);
  transition: color 0.3s, background 0.3s;
  flex-shrink: 0;
}

.partner-name {
  font-size: 15.5px;
  font-weight: 600;
  color: #6c7686;
  letter-spacing: 0.04em;
  transition: color 0.3s;
}

.partner-item:hover .partner-mark {
  color: var(--white);
  background: var(--primary);
}

.partner-item:hover .partner-name { color: var(--ink); }

/* ---- 客户评价轮播(fail-open:无 JS 时纵向排列全部可见) ------------------- */

.testi-wrap {
  position: relative;
  max-width: 820px;
  margin: 0 auto;
}

.testi-body { position: relative; min-height: 300px; }

.js .testi-body { min-height: 280px; }

.testi-slide {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 44px 48px;
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.js .testi-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: translateY(14px);
  pointer-events: none;
}

.js .testi-slide.active {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.testi-slide blockquote {
  position: relative;
  font-size: 16.5px;
  line-height: 2;
  color: var(--text);
  margin-bottom: 28px;
  padding-left: 34px;
}

.testi-slide blockquote::before {
  content: "\201C";
  position: absolute;
  left: -4px;
  top: -10px;
  font-size: 52px;
  font-weight: 700;
  line-height: 1;
  color: rgba(10, 94, 219, 0.25);
  font-family: Georgia, serif;
}

.testi-person {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-left: 34px;
}

.testi-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  font-size: 17px;
  font-weight: 700;
  color: var(--white);
  background: linear-gradient(135deg, #1e7bff, var(--primary-deep));
  flex-shrink: 0;
}

.testi-person h4 {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink);
}

.testi-person p {
  font-size: 13px;
  color: var(--muted-2);
}

.testi-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 28px;
}

.testi-dot {
  width: 9px;
  height: 9px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: #c9d3e0;
  cursor: pointer;
  transition: all 0.3s var(--ease);
}

.testi-dot.active {
  width: 26px;
  border-radius: 5px;
  background: var(--primary);
}

/* ---- FAQ 折叠(fail-open:无 JS 时全部展开) ------------------------------- */

.faq-list {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.faq-item.open {
  border-color: rgba(10, 94, 219, 0.35);
  box-shadow: var(--shadow-sm);
}

.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  padding: 20px 26px;
  background: none;
  border: 0;
  text-align: left;
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
}

.faq-q .faq-icon {
  position: relative;
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(10, 94, 219, 0.09);
  transition: background 0.3s, transform 0.35s var(--ease);
}

.faq-q .faq-icon::before,
.faq-q .faq-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
  transform: translate(-50%, -50%);
  transition: transform 0.35s var(--ease);
}

.faq-q .faq-icon::after { transform: translate(-50%, -50%) rotate(90deg); }

.faq-item.open .faq-icon { background: var(--primary); }
.faq-item.open .faq-icon::before,
.faq-item.open .faq-icon::after { background: var(--white); }
.faq-item.open .faq-icon::after { transform: translate(-50%, -50%) rotate(0deg); }

.faq-a {
  padding: 0 26px;
  max-height: 400px;
  transition: max-height 0.45s var(--ease), padding 0.45s var(--ease);
}

.faq-a p {
  padding-bottom: 22px;
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--muted);
}

.js .faq-item:not(.open) .faq-a {
  max-height: 0;
  padding-top: 0;
  padding-bottom: 0;
  overflow: hidden;
}

/* ---- 回到顶部:环形进度 --------------------------------------------------- */

.back-top { overflow: hidden; }

/* 进度环与按钮同尺寸、贴合圆球边缘(覆盖上方 .back-top svg 的 19px 图标尺寸) */
.back-top .ring-wrap {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.back-top .ring-bg,
.back-top .ring {
  fill: none;
  stroke-width: 3;
}

.back-top .ring-bg { stroke: rgba(255, 255, 255, 0.25); }

.back-top .ring {
  stroke: var(--white);
  stroke-linecap: round;
  stroke-dasharray: 135.1;
  stroke-dashoffset: 135.1;
  transition: stroke-dashoffset 0.15s linear;
}

/* ==========================================================================
   V2 扩展:新闻 / 案例 / 招聘页面样式
   ========================================================================== */

/* ---- 锚点定位偏移(避免被 sticky 导航遮挡) -------------------------------- */

section[id] { scroll-margin-top: 96px; }

/* ---- 通用筛选条 ----------------------------------------------------------- */

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 48px;
}

.filter-btn {
  padding: 9px 24px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  background: var(--white);
  border: 1.5px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.28s var(--ease);
}

.filter-btn:hover {
  color: var(--primary);
  border-color: rgba(10, 94, 219, 0.4);
}

.filter-btn.active {
  color: var(--white);
  background: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 6px 16px rgba(10, 94, 219, 0.28);
}

/* 筛选过渡动画:隐藏时先渐隐滑出再收起,显示时反向渐显 */
@keyframes filterOut {
  to { opacity: 0; transform: translateX(26px); }
}

@keyframes filterIn {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

.news-row.is-leaving,
.case-card.is-leaving {
  animation: filterOut 0.26s var(--ease) forwards;
  pointer-events: none;
}

.news-row.is-hidden,
.case-card.is-hidden { display: none; }

.news-row.is-entering,
.case-card.is-entering { animation: filterIn 0.34s var(--ease) backwards; }

/* ---- 新闻列表(日期块行式,华为风格) -------------------------------------- */

.news-page-list { max-width: 880px; margin: 0 auto; }

.news-row {
  display: grid;
  grid-template-columns: 110px 1fr auto;
  align-items: center;
  gap: 28px;
  padding: 30px 26px;
  border-bottom: 1px solid var(--line);
  background: var(--white);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  transition: transform 0.32s var(--ease), box-shadow 0.32s var(--ease),
    border-color 0.32s var(--ease);
}

.news-row:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.news-row-date {
  text-align: center;
  padding-right: 26px;
  border-right: 1px solid var(--line);
}

.news-row-date .day {
  display: block;
  font-size: 34px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
}

.news-row-date .ym {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  color: var(--muted-2);
  letter-spacing: 0.08em;
}

.news-row-body h3 {
  font-size: 17.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
  margin-bottom: 8px;
  transition: color 0.25s;
}

.news-row:hover h3 { color: var(--primary); }

.news-row-body p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.news-row-arrow {
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--muted-2);
  background: var(--bg);
  transition: all 0.3s var(--ease);
}

.news-row-arrow svg { width: 16px; height: 16px; }

.news-row:hover .news-row-arrow {
  color: var(--white);
  background: var(--primary);
  transform: translateX(4px);
}

/* ---- 新闻详情 -------------------------------------------------------------- */

.article-head h1 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.45;
  margin-top: 14px;
}

.article-wrap { max-width: 800px; margin: 0 auto; }

.article-head {
  padding-bottom: 30px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 38px;
}

.article-head .news-tag { margin-right: 10px; }

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  margin-top: 18px;
  font-size: 13.5px;
  color: var(--muted-2);
}

.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-meta svg { width: 15px; height: 15px; }

.article-body { font-size: 16px; line-height: 2.05; color: #2a3342; }

.article-body p { margin-bottom: 24px; }

.article-body h2 {
  font-size: 21px;
  font-weight: 700;
  color: var(--ink);
  margin: 42px 0 20px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
}

.article-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  margin: 34px 0 16px;
}

.article-body ul {
  margin: 0 0 24px;
  padding: 0;
}

.article-body ul li {
  position: relative;
  padding: 5px 0 5px 24px;
}

.article-body ul li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 16px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--primary);
  transform: rotate(45deg);
  opacity: 0.7;
}

.article-body blockquote {
  margin: 30px 0;
  padding: 22px 28px;
  background: rgba(10, 94, 219, 0.05);
  border-left: 4px solid var(--primary);
  border-radius: 0 10px 10px 0;
  color: var(--primary-deep);
  font-weight: 500;
}

.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 56px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}

.article-nav a {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  transition: border-color 0.28s, box-shadow 0.28s, transform 0.28s var(--ease);
}

.article-nav a:hover {
  border-color: rgba(10, 94, 219, 0.35);
  box-shadow: var(--shadow-sm);
  transform: translateY(-3px);
}

.article-nav a.next { text-align: right; align-items: flex-end; }

.article-nav .nav-label {
  font-size: 12.5px;
  color: var(--muted-2);
  letter-spacing: 0.1em;
}

.article-nav .nav-title {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.6;
}

/* ---- 客户案例 -------------------------------------------------------------- */

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

.case-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

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

.case-cover { position: relative; aspect-ratio: 16 / 10; overflow: hidden; }

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

.case-card:hover .case-cover img { transform: scale(1.05); }

.case-industry {
  position: absolute;
  left: 14px;
  top: 14px;
  padding: 5px 14px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--white);
  background: rgba(11, 21, 38, 0.62);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-radius: 999px;
  letter-spacing: 0.06em;
}

.case-body { padding: 26px 26px 28px; display: flex; flex-direction: column; flex: 1; }

.case-body h3 {
  font-size: 17.5px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.55;
  margin-bottom: 10px;
}

.case-body > p {
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
  margin-bottom: 20px;
  flex: 1;
}

.case-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
}

.case-metrics .m-num {
  font-size: 21px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

.case-metrics .m-num .suffix { font-size: 13px; }

.case-metrics .m-label {
  margin-top: 3px;
  font-size: 11.5px;
  color: var(--muted-2);
  letter-spacing: 0.03em;
}

/* ---- 加入我们 -------------------------------------------------------------- */

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.benefit-card {
  padding: 34px 26px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-align: center;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

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

.benefit-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  border-radius: 14px;
  color: var(--primary);
  background: rgba(10, 94, 219, 0.08);
  margin-bottom: 20px;
}

.benefit-icon svg { width: 25px; height: 25px; }

.benefit-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 10px;
}

.benefit-card p {
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

.jobs-accordion { max-width: 880px; margin: 0 auto; }

.job-item {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.job-item.open {
  border-color: rgba(10, 94, 219, 0.35);
  box-shadow: var(--shadow-sm);
}

.job-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  padding: 24px 28px;
  background: none;
  border: 0;
  text-align: left;
  font-family: inherit;
  cursor: pointer;
}

.job-head-info h3 {
  font-size: 17.5px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 10px;
}

.job-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.job-meta span {
  padding: 3px 12px;
  font-size: 12.5px;
  color: var(--muted);
  background: var(--bg);
  border-radius: 999px;
}

.job-meta span.hot {
  color: #d64545;
  background: rgba(214, 69, 69, 0.08);
  font-weight: 600;
}

.job-toggle {
  flex-shrink: 0;
  position: relative;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(10, 94, 219, 0.09);
  transition: background 0.3s, transform 0.35s var(--ease);
}

.job-toggle::before,
.job-toggle::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 13px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
  transform: translate(-50%, -50%);
  transition: transform 0.35s var(--ease), background 0.3s;
}

.job-toggle::after { transform: translate(-50%, -50%) rotate(90deg); }

.job-item.open .job-toggle { background: var(--primary); }
.job-item.open .job-toggle::before,
.job-item.open .job-toggle::after { background: var(--white); }
.job-item.open .job-toggle::after { transform: translate(-50%, -50%) rotate(0deg); }

.job-body {
  max-height: 800px;
  padding: 0 28px;
  transition: max-height 0.45s var(--ease), padding 0.45s var(--ease);
}

.js .job-item:not(.open) .job-body {
  max-height: 0;
  overflow: hidden;
}

.job-section { padding-bottom: 22px; }

.job-section h4 {
  font-size: 14.5px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.job-section h4::before {
  content: "";
  width: 14px;
  height: 2.5px;
  border-radius: 2px;
  background: var(--primary);
}

.job-section ul li {
  position: relative;
  padding: 4px 0 4px 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.job-section ul li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 14px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #c2ccda;
}

.job-apply {
  padding-bottom: 26px;
}

.job-apply .btn { padding: 10px 28px; font-size: 14px; }

/* ---- V2 响应式补充 --------------------------------------------------------- */

@media (max-width: 1080px) {
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .benefits-grid { grid-template-columns: repeat(2, 1fr); }
  .partners-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 860px) {
  /* 移动端:下拉常驻为缩进子列表 */
  .nav-menu > li.has-dropdown > a::before { display: none; }
  .nav-menu > li::after { display: none; }

  .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    min-width: 0;
    padding: 0 0 6px 18px;
    background: none;
    border: 0;
    box-shadow: none;
    border-left: 2px solid var(--line);
    margin-left: 4px;
  }

  .dropdown a {
    padding: 9px 8px;
    font-size: 14px;
    border-bottom: 0;
  }

  .dropdown a:hover { padding-left: 12px; }

  .testi-slide { padding: 32px 26px; }
  .js .testi-body { min-height: 360px; }

  .news-row { grid-template-columns: 84px 1fr; gap: 18px; padding: 24px 20px; }
  .news-row-date { padding-right: 18px; }
  .news-row-date .day { font-size: 26px; }
  .news-row-arrow { display: none; }
  .article-nav { grid-template-columns: 1fr; }
  .article-nav a.next { text-align: left; align-items: flex-start; }
  .case-grid { grid-template-columns: 1fr; }
  .job-head { padding: 20px; flex-wrap: wrap; }
  .job-body { padding: 0 20px; }
}

@media (max-width: 560px) {
  .partners-grid { grid-template-columns: repeat(2, 1fr); }
  .benefits-grid { grid-template-columns: 1fr; }
  .case-metrics { grid-template-columns: 1fr 1fr; gap: 14px 8px; }
  .case-metrics > div:nth-child(3) { grid-column: span 2; }
  .filter-bar { gap: 8px; }
  .filter-btn { padding: 8px 18px; font-size: 13px; }
}

/* ==========================================================================
   V3 扩展:Aurora Tech 极光科技(深空蓝底 + 蓝→青极光流动 + 玻璃拟态)
   注:Sora 字体 @import 依 CSS 规范须位于全部规则之前,已置于文件顶部注释区后
   ========================================================================== */

/* ---- V3 设计令牌 ------------------------------------------------------------ */

:root {
  --aurora-cyan: #22d3ee;
  --font-display: "Sora", "Outfit", var(--font);
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.14);
}

/* ---- Display 字体应用(仅 Latin/数字,中文自动回退系统字体) ------------------ */

.eyebrow,
.stat-num,
.timeline-year,
.brand-en,
.value-num,
.step-num,
.case-metrics .m-num,
.news-date,
.news-row-date .day,
.news-row-date .ym {
  font-family: var(--font-display);
}

/* 数字类字距微调,令数字更紧凑挺拔 */
.stat-num,
.timeline-year,
.value-num,
.step-num,
.case-metrics .m-num,
.news-date,
.news-row-date .day,
.news-row-date .ym {
  letter-spacing: -0.02em;
}

/* ---- Hero 极光变体(叠加于 .hero:深空蓝渐变 + 双光斑漂移 + 细网格) ---------- */

.hero--aurora {
  overflow: hidden;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(160deg, #060d1f 0%, #0a1a3a 45%, #0b2a5e 100%);
  background-size: 44px 44px, 44px 44px, auto;
  background-repeat: repeat;
}

.hero--aurora::before,
.hero--aurora::after {
  content: "";
  position: absolute;
  z-index: 0;
  border-radius: 50%;
  filter: blur(60px);
  pointer-events: none;
}

.hero--aurora::before {
  width: 560px;
  height: 420px;
  left: -110px;
  top: 6%;
  background: radial-gradient(closest-side, rgba(10, 94, 219, 0.35), transparent 72%);
  animation: aurora-drift-a 20s ease-in-out infinite;
}

.hero--aurora::after {
  width: 640px;
  height: 470px;
  right: -150px;
  bottom: 2%;
  background: radial-gradient(closest-side, rgba(34, 211, 238, 0.22), transparent 72%);
  animation: aurora-drift-b 26s ease-in-out infinite;
}

.hero--aurora .hero-inner {
  position: relative;
  z-index: 1;
}

@keyframes aurora-drift-a {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(70px, -46px) scale(1.12); }
}

@keyframes aurora-drift-b {
  0%, 100% { transform: translate(0, 0) scale(1.06); }
  50% { transform: translate(-80px, 54px) scale(0.94); }
}

/* ---- 子页面 Hero 极光变体(更收敛:单光斑) ------------------------------------ */

.page-hero--aurora {
  background: linear-gradient(150deg, #060d1f 0%, #0a1a3a 52%, #0b2a5e 100%);
}

.page-hero--aurora::before {
  content: "";
  position: absolute;
  z-index: 0;
  width: 520px;
  height: 360px;
  right: -110px;
  top: -130px;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(34, 211, 238, 0.18), transparent 72%);
  filter: blur(60px);
  pointer-events: none;
}

.page-hero--aurora .container {
  position: relative;
  z-index: 1;
}

/* ---- 玻璃按钮(深色底上的次级按钮,尺寸体系与 .btn 一致) ---------------------- */

.btn-glass {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 32px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.4;
  white-space: nowrap;
  border-radius: 8px;
  border: 1px solid var(--glass-border);
  color: var(--white);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  cursor: pointer;
  transition: all 0.3s var(--ease);
}

.btn-glass svg { width: 17px; height: 17px; }

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(34, 211, 238, 0.55);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.14), 0 12px 28px rgba(34, 211, 238, 0.22);
}

/* CTA 区次级按钮:cta-banner 内直接复用 .btn-glass(白玻璃),无需额外适配 */

/* ---- 玻璃卡片(深色底上的白色文字变体) ---------------------------------------- */

.glass-card {
  position: relative;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--white);
}

.glass-card p { color: rgba(255, 255, 255, 0.7); }

/* 流光边框:hover 时 1px 青蓝渐变内描边(mask 镂空实现) */
.card--glow { position: relative; }

.card--glow::after {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.65), rgba(10, 94, 219, 0.25) 45%, rgba(34, 211, 238, 0.65));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.35s var(--ease);
  pointer-events: none;
}

.card--glow:hover::after { opacity: 1; }

.card--glow:hover {
  box-shadow: 0 16px 40px rgba(34, 211, 238, 0.16);
}

/* ---- 深色区块(深空蓝渐变底 + 白字) -------------------------------------------- */

.section--dark {
  background:
    radial-gradient(900px 400px at 88% -10%, rgba(34, 211, 238, 0.08), transparent 62%),
    linear-gradient(160deg, #060d1f 0%, #0a1a3a 52%, #0b2a5e 100%);
  color: var(--white);
}

.section--dark .section-head h2 { color: #fff; }

.section--dark .section-desc { color: rgba(255, 255, 255, 0.65); }

.section--dark .eyebrow { color: #7dd3fc; }

.section--dark .eyebrow::before { background: #7dd3fc; }

/* ---- Marquee 无缝滚动(track 内放两份内容实现无缝) ------------------------------ */

.marquee {
  overflow: hidden;
  -webkit-mask: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.marquee-track {
  display: flex;
  gap: 18px;
  width: max-content;
  animation: marquee 28s linear infinite;
}

.marquee:hover .marquee-track { animation-play-state: paused; }

.marquee .partner-item { width: 240px; flex-shrink: 0; }

@keyframes marquee {
  to { transform: translateX(-50%); }
}

/* ---- 站内搜索(入口圆钮 + 全屏浮层,DOM 由 JS 动态创建) ------------------------- */

.search-fab {
  position: fixed;
  right: 28px;
  bottom: 92px;
  z-index: 90;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--ink);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: all 0.3s var(--ease);
}

.search-fab svg { width: 19px; height: 19px; }

.search-fab:hover {
  color: var(--primary);
  border-color: rgba(10, 94, 219, 0.4);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(10, 94, 219, 0.18);
}

.search-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(4, 8, 20, 0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: none;
}

.search-overlay.open { display: block; }

.search-panel {
  max-width: 640px;
  margin: 12vh auto 0;
  background: #fff;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.search-input-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
}

.search-input-wrap svg {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  color: var(--muted-2);
}

.search-input {
  flex: 1;
  min-width: 0;
  padding: 4px 0;
  font-family: inherit;
  font-size: 17px;
  color: var(--ink);
  background: none;
  border: 0;
  outline: none;
}

.search-input::placeholder { color: var(--muted-2); }

.search-results {
  max-height: 52vh;
  overflow: auto;
  padding: 8px 0;
}

.search-group-title {
  padding: 8px 20px 4px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted-2);
}

.search-item {
  display: block;
  padding: 10px 20px;
  cursor: pointer;
  transition: background 0.18s;
}

.search-item:hover,
.search-item.active { background: rgba(10, 94, 219, 0.07); }

.search-item.active { box-shadow: inset 3px 0 0 0 var(--primary); }

.search-item .s-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.5;
}

.search-item .s-sub {
  margin-top: 2px;
  font-size: 12.5px;
  color: var(--muted-2);
  line-height: 1.5;
}

.search-empty,
.search-hint {
  padding: 20px;
  text-align: center;
  font-size: 14px;
  color: var(--muted);
}

/* ---- 浮动咨询组件(静态标记,交互由后续任务注入) -------------------------------- */

.float-widget {
  position: fixed;
  right: 28px;
  bottom: 150px;
  z-index: 95;
}

.float-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, #1e7bff, var(--primary-deep));
  color: var(--white);
  box-shadow: 0 12px 28px rgba(10, 94, 219, 0.4);
  cursor: pointer;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.float-toggle svg { width: 23px; height: 23px; }

.float-toggle:hover {
  transform: scale(1.08);
  box-shadow: 0 16px 36px rgba(10, 94, 219, 0.52);
}

.float-panel {
  position: absolute;
  right: 0;
  bottom: 64px;
  width: 240px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  transform-origin: bottom right;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px) scale(0.96);
  transition: opacity 0.28s var(--ease), transform 0.28s var(--ease), visibility 0.28s;
}

.float-widget.open .float-panel {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.float-panel-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  cursor: pointer;
  transition: background 0.22s;
}

.float-panel-item:hover { background: rgba(10, 94, 219, 0.06); }

.float-panel-item .f-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  color: var(--primary);
  background: rgba(10, 94, 219, 0.08);
}

.float-panel-item .f-icon svg { width: 18px; height: 18px; }

.float-panel-item h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.4;
}

.float-panel-item p {
  margin-top: 2px;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
}

/* 面板底部二维码占位:纯 CSS 灰底纹理方块,不引外链图片 */
/* V3 fix: 空容器无显式尺寸易塌陷,补 width/min-height/margin 确保 ::before 方块与 ::after 文字稳定渲染 */
.float-qrcode {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  width: 120px;
  min-height: 150px;
  margin: 12px auto;
  padding: 16px 0 18px;
  border-top: 1px solid var(--line);
}

.float-qrcode::before {
  content: "";
  width: 120px;
  height: 120px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background:
    repeating-linear-gradient(0deg, #c9d3e0 0 6px, #e6ebf3 6px 12px),
    repeating-linear-gradient(90deg, rgba(11, 21, 38, 0.07) 0 6px, transparent 6px 12px);
}

.float-qrcode::after {
  content: "企业微信";
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.08em;
}

/* ---- 荣誉资质墙 ------------------------------------------------------------------ */

.honor-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.honor-card {
  padding: 36px 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-align: center;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

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

.honor-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  color: var(--white);
  background: linear-gradient(135deg, #1e7bff, var(--primary-deep));
  margin-bottom: 20px;
}

.honor-icon svg { width: 26px; height: 26px; }

.honor-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}

.honor-desc {
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---- 行业解决方案 Tab(fail-open:无 JS 时面板全部可见) --------------------------- */

.industry-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 40px;
}

.industry-tab {
  padding: 10px 22px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  background: var(--white);
  border: 1.5px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.28s var(--ease);
}

.industry-tab:hover {
  color: var(--primary);
  border-color: rgba(10, 94, 219, 0.4);
}

.industry-tab.active {
  color: var(--white);
  background: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 6px 16px rgba(10, 94, 219, 0.28);
}

.industry-panel {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.js .industry-panel { display: none; }

.js .industry-panel.active {
  display: block;
  animation: panel-fade 0.4s var(--ease);
}

@keyframes panel-fade {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.industry-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 26px 30px 22px;
  border-bottom: 1px solid var(--line);
}

.industry-head h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
}

.industry-cols {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  padding: 28px 30px;
}

.industry-cols h4 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14.5px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 14px;
}

.industry-cols h4::before {
  content: "";
  width: 14px;
  height: 2.5px;
  border-radius: 2px;
  background: var(--primary);
}

.industry-pain li {
  position: relative;
  padding: 7px 0 7px 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
}

.industry-pain li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 16px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #f59e0b;
}

.industry-plan li {
  position: relative;
  padding: 7px 0 7px 24px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
}

.industry-plan li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 15px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--primary);
  transform: rotate(45deg);
  opacity: 0.75;
}

.industry-case-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 30px;
  border-top: 1px solid var(--line);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--primary);
  transition: background 0.25s;
}

.industry-case-link:hover { background: rgba(10, 94, 219, 0.04); }

.industry-case-link svg {
  width: 16px;
  height: 16px;
  transition: transform 0.3s var(--ease);
}

.industry-case-link:hover svg { transform: translateX(4px); }

/* ---- 案例详情页 ------------------------------------------------------------------- */

.case-hero {
  padding: 64px 0;
  color: var(--white);
  background:
    radial-gradient(800px 340px at 85% -20%, rgba(34, 211, 238, 0.10), transparent 60%),
    linear-gradient(160deg, #060d1f 0%, #0a1a3a 52%, #0b2a5e 100%);
}

.case-hero-info { margin-bottom: 32px; }

.case-hero-info h1 {
  font-size: clamp(28px, 3.4vw, 34px);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0.01em;
  color: var(--white);
  margin: 0 0 10px;
}

.case-client {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.66);
  letter-spacing: 0.03em;
}

/* 行业标签复用 .case-industry,详情页头区改为静态行内展示 */
.case-hero .case-industry {
  position: static;
  display: inline-block;
}

.case-cover {
  width: 100%;
  height: 320px;
  object-fit: cover;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
}

.case-wrap {
  max-width: 840px;
  margin: 56px auto;
}

.case-section { margin-bottom: 52px; }

.case-section h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 20px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
}

.case-challenge p,
.case-solution p {
  font-size: 15px;
  line-height: 1.95;
  color: #2a3342;
  margin-bottom: 14px;
}

.case-challenge ul,
.case-solution ul { margin: 0; padding: 0; }

.case-challenge ul li {
  position: relative;
  padding: 6px 0 6px 22px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text);
}

.case-challenge ul li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 15px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #f59e0b;
}

.case-solution ul li {
  position: relative;
  padding: 7px 0 7px 24px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text);
}

.case-solution ul li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 16px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--primary);
  transform: rotate(45deg);
  opacity: 0.75;
}

.case-metrics-big {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.case-metrics-big > div {
  padding: 28px 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-align: center;
}

.case-metrics-big .m-num {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.case-metrics-big .m-num .suffix { font-size: 18px; }

.case-metrics-big .m-label {
  margin-top: 6px;
  font-size: 13px;
  color: var(--muted);
}

.case-quote {
  margin: 40px 0;
  padding: 26px 30px;
  background: rgba(10, 94, 219, 0.05);
  border-left: 4px solid var(--primary);
  border-radius: 0 12px 12px 0;
}

.case-quote .q-text {
  font-size: 16px;
  line-height: 1.9;
  color: var(--primary-deep);
}

.case-quote .q-person {
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted);
  text-align: right;
}

.related-cases {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

/* 迷你案例卡:复用 .case-card(无封面,仅 h3 + 行业 tag),标签改静态展示 */
.related-cases .case-industry {
  position: static;
  display: inline-block;
  margin-bottom: 10px;
}

.case-notfound {
  padding: 110px 24px 130px;
  text-align: center;
}

.case-notfound-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 84px;
  height: 84px;
  border-radius: 50%;
  color: var(--primary);
  background: rgba(10, 94, 219, 0.08);
  margin-bottom: 24px;
}

.case-notfound-icon svg { width: 38px; height: 38px; }

.case-notfound h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 10px;
}

.case-notfound p {
  font-size: 14.5px;
  color: var(--muted);
  margin-bottom: 28px;
}

/* ---- 页脚 Newsletter ---------------------------------------------------------------- */

.footer-newsletter {
  padding: 34px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-newsletter label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 4px;
}

.footer-newsletter p {
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 16px;
}

.newsletter-form {
  display: flex;
  gap: 10px;
}

.newsletter-input {
  flex: 1;
  min-width: 0;
  padding: 10px 14px;
  font-family: inherit;
  font-size: 14px;
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  outline: none;
  transition: border-color 0.25s, box-shadow 0.25s;
}

.newsletter-input::placeholder { color: rgba(255, 255, 255, 0.38); }

.newsletter-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(10, 94, 219, 0.35);
}

.newsletter-btn {
  flex-shrink: 0;
  padding: 10px 20px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  color: var(--white);
  background: var(--primary);
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.25s;
}

.newsletter-btn:hover { background: var(--primary-dark); }

.newsletter-msg {
  margin-top: 8px;
  font-size: 12.5px;
  color: transparent;
  transition: color 0.3s;
}

.newsletter-msg.success { color: #6ee7b7; }

.newsletter-msg.error { color: #fca5a5; }

/* ---- V3 响应式与降级 ----------------------------------------------------------------- */

@media (max-width: 860px) {
  .float-widget { bottom: 136px; }
  .honor-grid { grid-template-columns: repeat(2, 1fr); }
  .industry-cols { grid-template-columns: 1fr; }
  .case-cover { height: 220px; }
}

@media (max-width: 560px) {
  .float-widget { right: 16px; }
  .search-fab { right: 16px; bottom: 88px; }
  .search-panel { margin: 8vh 12px 0; }
  .honor-grid { grid-template-columns: 1fr; }
  .newsletter-form { flex-direction: column; }
  .case-metrics-big { grid-template-columns: 1fr; }
  .related-cases { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .marquee { overflow-x: auto; }
  .marquee-track { animation: none; }
  .hero--aurora::before,
  .hero--aurora::after { animation: none; }
}

/* V3 fix: 窄视口下订阅按钮被浮动咨询圆钮(.float-widget z-index 95)遮挡拦截点击,提升表单层级 */
.newsletter-form { position: relative; z-index: 210; }

/* ==========================================================================
   V3.1 顶部导航搜索(圆球展开式)+ 登录/注册入口
   说明:旧 .search-fab / .search-overlay 段(上方"站内搜索"注释块)保留未删,
   仅不再被任何 HTML 引用;结果条目类 .search-group-title / .search-item /
   .s-title / .s-sub / .search-empty / .search-hint 原定义即为全局作用域,直接复用。
   ========================================================================== */

/* ---- 搜索容器:位于登录/注册入口左侧,水平排布由 navbar-inner flex 处理 ---- */
.nav-search {
  position: relative;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

/* 圆球入口(玻璃蓝底描边) */
.search-orb {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(10, 94, 219, 0.3);
  border-radius: 50%;
  background: rgba(10, 94, 219, 0.08);
  color: var(--primary);
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease),
    transform 0.25s var(--ease), opacity 0.25s var(--ease);
}

.search-orb svg { width: 18px; height: 18px; }

.search-orb:hover,
.search-orb:focus-visible {
  background: rgba(10, 94, 219, 0.16);
  border-color: rgba(10, 94, 219, 0.55);
  transform: translateY(-1px);
}

.search-orb:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

/* 展开后圆球渐隐但保留占位(避免布局跳动;桌面端由下方覆盖式方案接管) */
.nav-search.open .search-orb {
  opacity: 0;
  pointer-events: none;
}

/* 输入框容器:0 → 展开宽度(桌面为覆盖式绝对定位,见 V3.4 区块) */
.search-box {
  width: 0;
  min-width: 0;
  opacity: 0;
  overflow: visible; /* 下拉需溢出容器显示 */
  transition: width 0.5s var(--ease), opacity 0.5s var(--ease);
}

.nav-search.open .search-box { width: clamp(300px, 44vw, 540px); opacity: 1; }

/* 行内输入框(复用旧 .search-input 类名,参数按导航行内场景适配) */
.nav-search .search-input {
  display: block;
  width: 100%;
  height: 40px;
  padding: 0 16px;
  font-family: inherit;
  font-size: 14px;
  color: var(--ink);
  background: var(--white);
  border: 1.5px solid var(--line);
  border-radius: 10px;
  outline: none;
  transition: border-color 0.25s, box-shadow 0.25s;
}

.nav-search .search-input::placeholder { color: var(--muted-2); }

.nav-search .search-input:focus {
  border-color: rgba(10, 94, 219, 0.55);
  box-shadow: 0 0 0 3px rgba(10, 94, 219, 0.12);
}

/* 结果下拉(组标题/条目/空态复用旧全局类) */
.search-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: 100%;
  max-height: 60vh;
  overflow: auto;
  padding: 8px 0;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  z-index: 150;
}

.nav-search.open .search-dropdown { display: block; }

/* ---- 登录/注册入口(桌面) -------------------------------------------------- */
.nav-auth-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  height: 40px;
  padding: 0 18px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--primary);
  white-space: nowrap;
  border: 1.5px solid rgba(10, 94, 219, 0.45);
  border-radius: 6px;
  transition: color 0.25s, border-color 0.25s, background 0.25s;
}

.nav-auth-link:hover {
  color: var(--primary-dark);
  border-color: var(--primary);
  background: rgba(10, 94, 219, 0.06);
}

.nav-auth-register {
  padding: 0 34px;
  border: 1.5px solid var(--primary);
  color: var(--white);
  background: var(--primary);
  transition: background 0.25s, box-shadow 0.25s;
}

.nav-auth-register:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: var(--white);
  box-shadow: 0 4px 12px rgba(10, 94, 219, 0.3);
}

/* ---- Ripple 水波纹(悬停:呼吸式波面 + 轻柔涟漪环;点击:入水式扩散) -------- */
.ripple {
  position: relative;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
}

/* 波面:柔和水滴悬于光标处,呼吸式起伏;
   圆心由 --rx/--ry 定位(JS mousemove 实时更新),Material 曲线平滑游动;
   currentColor 自动适配按钮文字色 */
.ripple::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 110px;
  height: 110px;
  border-radius: 50%;
  background: radial-gradient(circle, currentColor 0%, transparent 62%);
  opacity: 0;
  transform: translate(var(--rx, -110px), var(--ry, -110px));
  transition: transform 0.25s cubic-bezier(0.25, 0.8, 0.25, 1), opacity 0.35s;
  pointer-events: none;
}

/* 涟漪环:自光标处缓缓荡开、消散,单圈往复 */
.ripple::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 110px;
  height: 110px;
  border-radius: 50%;
  border: 1.5px solid currentColor;
  opacity: 0;
  transform: translate(var(--rx, -110px), var(--ry, -110px));
  transition: transform 0.25s cubic-bezier(0.25, 0.8, 0.25, 1);
  pointer-events: none;
}

.ripple:hover::before { animation: waterBreath 2.8s ease-in-out infinite; }
.ripple:hover::after { animation: waterRing 2.4s cubic-bezier(0.25, 0.8, 0.25, 1) infinite; }

@keyframes waterBreath {
  0%, 100% { opacity: 0.22; scale: 0.9; }
  50%      { opacity: 0.38; scale: 1.05; }
}

@keyframes waterRing {
  0%   { scale: 0.35; opacity: 0.4; }
  70%  { opacity: 0.12; }
  100% { scale: 1.2; opacity: 0; }
}

/* 注册按钮(蓝底白字):白色波面加强,保证清晰可见 */
.nav-auth-register.ripple:hover::before { animation-name: waterBreathStrong; }

@keyframes waterBreathStrong {
  0%, 100% { opacity: 0.45; scale: 0.9; }
  50%      { opacity: 0.65; scale: 1.05; }
}

/* 点击入水式扩散波纹 */
.ripple-wave {
  position: absolute;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.3;
  transform: scale(0);
  pointer-events: none;
  animation: rippleSpread 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes rippleSpread {
  to { transform: scale(1); opacity: 0; }
}

/* ---- 折叠菜单内登录/注册(桌面隐藏,≤860px 显示) ------------------------- */
.nav-menu-auth { display: none; }

/* ---- V3.1 响应式 --------------------------------------------------------- */
@media (max-width: 860px) {
  /* 搜索球保持可见,与汉堡钮同列右侧 */
  .nav-search { order: 1; margin-left: auto; }
  .nav-toggle { order: 2; }
  .search-orb { width: 38px; height: 38px; }
  .nav-auth-link { display: none; }

  /* 展开后输入框改为 fixed 铺满导航下方一行 */
  .nav-search.open .search-box {
    position: fixed;
    left: 0;
    right: 0;
    top: 70px;
    width: auto;
    margin: 0 12px;
    z-index: 140;
  }

  .nav-search.open .search-dropdown { width: 100%; }

  /* 折叠菜单内的登录/注册:胶囊按钮组,细线与主导航分隔 */
  .nav-menu-auth {
    display: flex;
    gap: 10px;
    margin-top: 6px;
    padding: 12px 4px 4px;
    border-top: 1px solid var(--line);
  }

  .nav-menu-auth a {
    flex: 1;
    text-align: center;
    padding: 10px 0;
    border-bottom: 0;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 600;
    transition: opacity 0.2s, transform 0.2s;
  }

  .nav-menu-auth a:active { opacity: 0.82; transform: scale(0.97); }

  .nav-menu-auth a:first-child {
    color: var(--primary);
    border: 1.5px solid rgba(10, 94, 219, 0.4);
  }

  .nav-menu-auth a:last-child {
    color: var(--white);
    background: var(--primary);
  }
}

/* ---- 移动端菜单遮罩(JS 动态插入,展开时渐显,点击收起) ------------------- */
.nav-backdrop {
  position: fixed;
  inset: 0;
  z-index: 90; /* 低于导航栏(100),菜单浮层随导航栏置于遮罩之上 */
  background: rgba(11, 21, 38, 0.45);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s var(--ease), visibility 0.35s;
}

.nav-backdrop.show {
  opacity: 1;
  visibility: visible;
}

@media (prefers-reduced-motion: reduce) {
  .search-orb,
  .search-box,
  .nav-search .search-input { transition-duration: 0.01ms; }
}

/* ==========================================================================
   V3.2 法律声明 / 隐私政策占位页
   ========================================================================== */

.static-placeholder {
  max-width: 640px;
  margin: 0 auto;
  padding: 88px 32px 104px;
  text-align: center;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.static-placeholder .sp-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 76px;
  height: 76px;
  margin-bottom: 26px;
  color: var(--primary);
  background: var(--white);
  border: 1px solid rgba(10, 94, 219, 0.22);
  border-radius: 50%;
  box-shadow: var(--shadow-sm);
}

.static-placeholder .sp-icon svg { width: 30px; height: 30px; }

.static-placeholder h2 {
  margin-bottom: 12px;
  font-size: 24px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.01em;
}

.static-placeholder p {
  margin-bottom: 34px;
  font-size: 15.5px;
  color: var(--muted);
}

@media (max-width: 560px) {
  .static-placeholder { padding: 64px 20px 80px; }
}

/* ---- 法律文档页(#legalDoc 容器,复用 .article-body 排版) ---- */
.legal-doc-wrap { max-width: 860px; margin: 0 auto; }

/* ==========================================================================
   V3.4 覆盖式搜索展开(搜索框盖在栏目上方,不挤压布局)
   时序:展开 = 栏目先渐隐(0.45s) → 搜索框再展开(0.5s)
         收回 = 搜索框先收回(0.5s) → 栏目再渐显(0.45s)
   实现:搜索框绝对定位锚定右缘向左展开;栏目保持原位仅做渐变;
         各方向时序由"目标状态"的 transition-delay 独立控制
   ========================================================================== */

/* 仅桌面(移动端菜单为抽屉展开,不占导航行空间,无需隐藏) */
@media (min-width: 861px) {
  /* 栏目:恢复显示时延迟 0.55s,等搜索框完全收回后再渐显 */
  .nav-menu {
    transition: opacity 0.45s var(--ease) 0.55s, transform 0.45s var(--ease) 0.55s,
      visibility 0s;
  }

  /* 搜索展开:栏目立即渐隐(无延迟),渐隐完成后摘除可交互性 */
  .navbar.search-open .nav-menu {
    opacity: 0;
    transform: translateX(-16px);
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.45s var(--ease), transform 0.45s var(--ease),
      visibility 0s 0.45s;
  }

  /* 搜索框:绝对定位,右缘锚定搜索球位置,向左展开直接盖在栏目上方 */
  .nav-search .search-box {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 60;
  }

  /* 展开:延迟 0.45s 等栏目渐隐完成后再展开 */
  .nav-search.open .search-box {
    transition-delay: 0.45s;
  }
}

@media (prefers-reduced-motion: reduce) {
  .nav-menu,
  .navbar.search-open .nav-menu { transition-duration: 0.01ms; }
}

/* ==========================================================================
   V3.3 区域/语言选择器 + 全站 toast
   ========================================================================== */

.topbar-links { position: relative; }

/* 触发按钮(纯文字 + 下拉箭头) */
.topbar-lang {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0;
  font: inherit;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.78);
  background: none;
  border: 0;
  cursor: pointer;
  transition: color 0.25s;
}

.topbar-lang:hover,
.topbar-lang:focus-visible { color: var(--white); }

.topbar-lang:focus-visible { outline: 2px solid rgba(255, 255, 255, 0.7); outline-offset: 2px; }

/* 下拉箭头(CSS 三角),展开时向上翻转 */
.topbar-lang::after {
  content: "";
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  opacity: 0.75;
  transition: transform 0.25s var(--ease);
}

.topbar-lang[aria-expanded="true"]::after {
  transform: rotate(180deg);
}

/* 选择面板 */
.lang-panel {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  z-index: 220;
  width: 620px;
  max-width: calc(100vw - 32px);
  padding: 14px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease),
    visibility 0.25s;
}

.lang-panel.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-filter-input {
  display: block;
  width: 100%;
  padding: 9px 14px;
  font-family: inherit;
  font-size: 14px;
  color: var(--ink);
  background: var(--bg);
  border: 1.5px solid var(--line);
  border-radius: 8px;
  outline: none;
  transition: border-color 0.25s, box-shadow 0.25s;
}

.lang-filter-input:focus {
  border-color: rgba(10, 94, 219, 0.55);
  box-shadow: 0 0 0 3px rgba(10, 94, 219, 0.12);
}

.lang-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 4px;
  margin-top: 10px;
  max-height: 56vh;
  overflow: auto;
}

.lang-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 9px 12px;
  font-family: inherit;
  font-size: 13.5px;
  text-align: left;
  color: var(--text);
  background: none;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.lang-option:hover { background: var(--bg); color: var(--primary); }

.lang-option.current {
  color: var(--primary);
  background: rgba(10, 94, 219, 0.08);
  font-weight: 600;
}

.lang-option .lo-check { color: var(--primary); font-size: 13px; }

.lang-empty {
  grid-column: 1 / -1;
  padding: 22px 0;
  font-size: 13.5px;
  color: var(--muted-2);
  text-align: center;
}

/* toast 轻提示 */
.site-toast {
  position: fixed;
  left: 50%;
  bottom: 36px;
  z-index: 300;
  transform: translateX(-50%) translateY(10px);
  padding: 11px 22px;
  font-size: 14px;
  color: var(--white);
  background: rgba(11, 21, 38, 0.92);
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease),
    visibility 0.3s;
}

.site-toast.show {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

@media (max-width: 860px) {
  .lang-panel {
    position: fixed;
    top: 46px;
    left: 12px;
    right: 12px;
    width: auto;
  }

  .lang-list { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .lang-panel,
  .site-toast { transition-duration: 0.01ms; }
}