@charset "UTF-8";
/* ==========================================================================
   【公司名】官网 · 全局样式
   --------------------------------------------------------------------------
   1. 设计令牌（CSS Variables）—— 换品牌色只改这一处
   2. 基础重置
   3. 通用布局与组件（容器 / 区块 / 标题 / 按钮 / 卡片）
   4. 页头导航
   5. 首页各区块
   6. 子页面通用（通栏横幅 / 面包屑）
   7. 关于我们 / 产品服务 / 客户案例 / 联系我们 / 404
   8. 页脚 / 返回顶部
   ========================================================================== */

/* ============================ 1. 设计令牌 ============================ */
:root {
  /* 品牌主色 */
  --c-primary-900: #0B2E5B;
  --c-primary-700: #1A56DB;
  --c-primary-500: #2563EB;
  --c-primary-100: #DBE7FE;
  --c-primary-50: #EFF4FF;

  /* 背景 */
  --c-bg: #FFFFFF;
  --c-bg-soft: #F5F7FA;
  --c-bg-dark: #0B2E5B;

  /* 文字 */
  --c-text: #0F172A;
  --c-text-muted: #475569;
  --c-text-light: #94A3B8;

  /* 功能色 */
  --c-success: #16A34A;
  --c-warning: #F59E0B;
  --c-danger: #DC2626;

  /* 描边 */
  --c-border: #E2E8F0;
  --c-border-soft: #EEF2F7;

  /* 圆角 */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-pill: 999px;

  /* 阴影 */
  --sh-sm: 0 1px 2px rgba(15, 23, 42, .06);
  --sh-md: 0 10px 30px rgba(15, 23, 42, .08);
  --sh-lg: 0 24px 60px rgba(15, 23, 42, .12);
  --sh-brand: 0 18px 38px rgba(37, 99, 235, .30);

  /* 尺寸 */
  --maxw: 1200px;
  --nav-h: 72px;
  --sec-pad: 96px;

  /* 动效 */
  --ease: cubic-bezier(.22, .61, .36, 1);
  --t-fast: .18s;
  --t-base: .3s;
  --t-slow: .6s;

  /* 字体 */
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  --fs-h1: 48px;
  --fs-h2: 24px;
  --fs-body: 16px;
}

/* ============================ 2. 基础重置 ============================ */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: var(--fs-body);
  font-weight: 400;
  line-height: 1.75;
  color: var(--c-text-muted);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  color: var(--c-text);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -.01em;
}

p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; height: auto; }
button { font: inherit; color: inherit; cursor: pointer; }

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}

:focus-visible {
  outline: 3px solid rgba(37, 99, 235, .55);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection { background: rgba(37, 99, 235, .18); color: var(--c-primary-900); }

/* ======================== 3. 通用布局与组件 ======================== */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: var(--sec-pad) 0; }
.section--soft { background: var(--c-bg-soft); }
.section--tight { padding: 72px 0; }

/* 区块标题 */
.sec-head {
  max-width: 720px;
  margin: 0 auto 56px;
  text-align: center;
}

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

.sec-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  padding: 6px 14px;
  border-radius: var(--r-pill);
  background: var(--c-primary-50);
  color: var(--c-primary-700);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
}

.sec-eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-primary-500);
}

.sec-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--c-text);
}

.sec-desc {
  margin-top: 16px;
  font-size: 17px;
  color: var(--c-text-muted);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  transition: transform var(--t-fast) var(--ease),
              box-shadow var(--t-base) var(--ease),
              background-color var(--t-base) var(--ease),
              color var(--t-base) var(--ease),
              border-color var(--t-base) var(--ease);
}

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: scale(.97); }

.btn-primary {
  background: linear-gradient(135deg, var(--c-primary-500), var(--c-primary-700));
  color: #fff;
  box-shadow: var(--sh-brand);
}

.btn-primary:hover { box-shadow: 0 22px 46px rgba(37, 99, 235, .40); }

.btn-ghost {
  background: rgba(255, 255, 255, .08);
  border-color: rgba(255, 255, 255, .38);
  color: #fff;
  backdrop-filter: blur(6px);
}

.btn-ghost:hover { background: rgba(255, 255, 255, .16); border-color: #fff; }

.btn-outline {
  background: #fff;
  border-color: var(--c-border);
  color: var(--c-primary-700);
}

.btn-outline:hover {
  border-color: var(--c-primary-500);
  background: var(--c-primary-50);
  box-shadow: var(--sh-md);
}

.btn-sm { padding: 10px 20px; font-size: 14px; }
.btn-block { width: 100%; }

/* 卡片 */
.card {
  position: relative;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--c-border-soft);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-sm);
  transition: transform var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
}

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

/* 标签 */
.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--r-pill);
  background: var(--c-primary-50);
  color: var(--c-primary-700);
  font-size: 12px;
  font-weight: 600;
}

/* 仅供屏幕阅读器（视觉隐藏） */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* 滚动淡入 */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--t-slow) var(--ease), transform var(--t-slow) var(--ease);
}

.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

/* ============================ 4. 页头导航 ============================ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--nav-h);
  background: transparent;
  transition: background-color var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
}

.site-header.is-scrolled,
.site-header.is-solid {
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(14px);
  box-shadow: 0 1px 0 rgba(15, 23, 42, .06), 0 8px 24px rgba(15, 23, 42, .05);
}

.site-header.is-solid .nav-link { color: var(--c-text-muted); }
.site-header.is-solid .nav-link:hover,
.site-header.is-solid .nav-link.is-active { color: var(--c-primary-700); }
.site-header.is-solid .nav-link.is-active::after,
.site-header.is-solid .nav-link:hover::after { opacity: 1; transform: translateX(-50%) scaleX(1); }
.site-header.is-solid .logo-text { color: var(--c-text); }
.site-header.is-solid .logo-mark { background: linear-gradient(135deg, var(--c-primary-500), var(--c-primary-700)); color: #fff; }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: var(--nav-h);
}

.logo { display: flex; align-items: center; gap: 10px; flex: none; }

.logo-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(255, 255, 255, .16);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
}

.logo-text {
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .01em;
}

/* 页头品牌字放大（页脚保持 18px） */
.header-inner .logo-text {
  font-size: 26px;
  letter-spacing: .02em;
}

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

.nav-link {
  position: relative;
  display: block;
  padding: 10px 16px;
  border-radius: var(--r-pill);
  color: rgba(255, 255, 255, .82);
  font-size: 15px;
  font-weight: 500;
  transition: color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 18px;
  height: 3px;
  border-radius: 2px;
  background: var(--c-primary-500);
  opacity: 0;
  transform: translateX(-50%) scaleX(.4);
  transition: opacity var(--t-base) var(--ease), transform var(--t-base) var(--ease);
}

.nav-link:hover,
.nav-link.is-active { color: #fff; }

.nav-link:hover::after,
.nav-link.is-active::after { opacity: 1; transform: translateX(-50%) scaleX(1); }

.header-actions { display: flex; align-items: center; gap: 12px; flex: none; }

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, .3);
  border-radius: 12px;
  background: rgba(255, 255, 255, .1);
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 3px auto;
  border-radius: 2px;
  background: currentColor;
  transition: transform var(--t-base) var(--ease), opacity var(--t-base) var(--ease);
}

.site-header.is-solid .nav-toggle { border-color: var(--c-border); color: var(--c-text); background: #fff; }
.site-header.is-solid .nav-toggle span { background: var(--c-text); }

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* ============================ 5. 首页 ============================ */

/* --- Hero --- */
.hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--nav-h) + 100px) 0 110px;
  background: radial-gradient(1200px 620px at 82% 12%, rgba(37, 99, 235, .38), transparent 60%),
              radial-gradient(900px 520px at 8% 88%, rgba(26, 86, 219, .30), transparent 62%),
              linear-gradient(160deg, #0B2E5B 0%, #103A72 52%, #0A2547 100%);
  color: #fff;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.hero::before {
  top: -140px;
  right: -120px;
  width: 520px;
  height: 520px;
  border: 1px solid rgba(255, 255, 255, .10);
}

.hero::after {
  right: -60px;
  bottom: -180px;
  width: 380px;
  height: 380px;
  border: 1px solid rgba(255, 255, 255, .08);
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 56px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
  padding: 8px 16px 8px 10px;
  border: 1px solid rgba(255, 255, 255, .22);
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, .10);
  backdrop-filter: blur(8px);
  font-size: 13px;
  color: rgba(255, 255, 255, .92);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-success);
  box-shadow: 0 0 0 4px rgba(22, 163, 74, .28);
}

.hero-title {
  font-size: 52px;
  line-height: 1.18;
  color: #fff;
  letter-spacing: -.02em;
}

.hero-title .accent {
  background: linear-gradient(100deg, #93C5FD 0%, #60A5FA 45%, #FFFFFF 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  max-width: 560px;
  margin-top: 24px;
  font-size: 18px;
  line-height: 1.85;
  color: rgba(255, 255, 255, .78);
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 38px; }

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, .14);
}

.hero-meta-item strong {
  display: block;
  color: #fff;
  font-size: 24px;
  font-weight: 700;
}

.hero-meta-item span { font-size: 13px; color: rgba(255, 255, 255, .62); }

.hero-visual { position: relative; }

.hero-visual img {
  width: 100%;
  border-radius: var(--r-lg);
  box-shadow: 0 40px 80px rgba(3, 12, 26, .48);
}

.hero-float-card {
  position: absolute;
  left: -28px;
  bottom: 34px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border: 1px solid rgba(255, 255, 255, .22);
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, .12);
  backdrop-filter: blur(14px);
  box-shadow: 0 20px 40px rgba(3, 12, 26, .35);
}

.hero-float-card .fc-icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: none;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--c-primary-500), var(--c-primary-700));
  color: #fff;
}

.hero-float-card strong { display: block; color: #fff; font-size: 15px; }
.hero-float-card span { font-size: 12px; color: rgba(255, 255, 255, .70); }

/* 入场动画 */
.anim-up { animation: animUp .8s var(--ease) both; }
@keyframes animUp {
  from { opacity: 0; transform: translateY(28px); }
  to { opacity: 1; transform: none; }
}
.d1 { animation-delay: .05s; }
.d2 { animation-delay: .18s; }
.d3 { animation-delay: .31s; }
.d4 { animation-delay: .44s; }
.d5 { animation-delay: .57s; }

/* --- 核心优势 --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  position: relative;
  padding: 36px 28px 40px;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--c-border-soft);
  box-shadow: var(--sh-sm);
  transition: transform var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
}

.feature-card::after {
  content: "";
  position: absolute;
  left: 28px;
  right: 28px;
  bottom: 0;
  height: 3px;
  border-radius: 3px 3px 0 0;
  background: linear-gradient(90deg, var(--c-primary-500), var(--c-primary-700));
  opacity: 0;
  transition: opacity var(--t-base) var(--ease);
}

.feature-card:hover { transform: translateY(-6px); box-shadow: var(--sh-lg); }
.feature-card:hover::after { opacity: 1; }

.feature-icon {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  margin-bottom: 22px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--c-primary-50), #E4ECFE);
  color: var(--c-primary-700);
}

.feature-icon svg { width: 28px; height: 28px; }

.feature-card h3 { font-size: 19px; margin-bottom: 10px; }
.feature-card p { font-size: 15px; line-height: 1.8; }

/* --- 服务概览 --- */
.service-overview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.sv-list { display: flex; flex-direction: column; gap: 14px; }

.sv-item {
  display: flex;
  gap: 18px;
  padding: 22px 24px;
  border: 1px solid transparent;
  border-radius: var(--r-md);
  background: #fff;
  transition: background-color var(--t-base) var(--ease), border-color var(--t-base) var(--ease),
              transform var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
}

.sv-item:hover {
  border-color: var(--c-primary-100);
  transform: translateX(6px);
  box-shadow: var(--sh-md);
}

.sv-num {
  flex: none;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--c-bg-soft);
  color: var(--c-primary-700);
  font-size: 16px;
  font-weight: 700;
}

.sv-item:hover .sv-num {
  background: linear-gradient(135deg, var(--c-primary-500), var(--c-primary-700));
  color: #fff;
}

.sv-item h3 { font-size: 18px; margin-bottom: 6px; }
.sv-item p { font-size: 15px; }

.sv-visual {
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--sh-lg);
}

.sv-visual img { width: 100%; }

/* --- 数据成就 --- */
.stats {
  position: relative;
  overflow: hidden;
  padding: 80px 0;
  background: radial-gradient(900px 400px at 20% 0%, rgba(37, 99, 235, .34), transparent 62%),
              linear-gradient(135deg, var(--c-primary-900), #143F79 60%, #0B2E5B);
  color: #fff;
}

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

.stat-item { padding: 8px 12px; }

.stat-num {
  display: block;
  color: #fff;
  font-size: 44px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -.02em;
}

.stat-num .suffix { font-size: 24px; margin-left: 2px; }
.stat-label { margin-top: 8px; font-size: 15px; color: rgba(255, 255, 255, .70); }

/* --- 案例预览 --- */
.cases-preview {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.case-card { display: block; border-radius: var(--r-lg); }

.case-thumb {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-lg);
  aspect-ratio: 4 / 3;
  background: var(--c-bg-soft);
}

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

.case-card:hover .case-thumb img { transform: scale(1.07); }

.case-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11, 46, 91, .88) 0%, rgba(11, 46, 91, .18) 52%, transparent 100%);
  opacity: .9;
  transition: opacity var(--t-base) var(--ease);
}

.case-card:hover .case-thumb::after { opacity: 1; }

.case-info {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 20px;
  z-index: 2;
  color: #fff;
}

.case-info .tag {
  background: rgba(255, 255, 255, .18);
  color: #fff;
  backdrop-filter: blur(6px);
}

.case-info h3 { margin-top: 10px; font-size: 19px; color: #fff; }
.case-info p { margin-top: 6px; font-size: 14px; color: rgba(255, 255, 255, .76); }
.case-summary { padding: 18px 2px 0; font-size: 15px; }

/* --- CTA --- */
.cta-section {
  position: relative;
  overflow: hidden;
  padding: 90px 0;
  background: linear-gradient(135deg, #0B2E5B, #1A56DB 70%, #2563EB);
  text-align: center;
  color: #fff;
}

.cta-section::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -220px;
  width: 720px;
  height: 720px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, .16), transparent 62%);
  pointer-events: none;
}

.cta-inner { position: relative; z-index: 2; max-width: 720px; margin: 0 auto; }
.cta-inner h2 { font-size: 34px; color: #fff; }
.cta-inner p { margin-top: 16px; font-size: 17px; color: rgba(255, 255, 255, .80); }
.cta-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

/* ======================== 6. 子页面通用 ======================== */
.page-banner {
  position: relative;
  overflow: hidden;
  padding: calc(var(--nav-h) + 64px) 0 64px;
  background: radial-gradient(700px 320px at 78% 20%, rgba(37, 99, 235, .34), transparent 62%),
              linear-gradient(140deg, #0B2E5B, #123A72 62%, #0A2547);
  color: #fff;
}

.page-banner h1 { font-size: 40px; color: #fff; }
.page-banner .page-desc { margin-top: 14px; max-width: 620px; font-size: 17px; color: rgba(255, 255, 255, .76); }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  font-size: 14px;
  color: rgba(255, 255, 255, .62);
}

.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { opacity: .5; }
.breadcrumb .current { color: rgba(255, 255, 255, .92); }

/* ======================== 7-1. 关于我们 ======================== */
.about-intro {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 64px;
  align-items: center;
}

.about-intro p + p { margin-top: 18px; }
.about-intro .lead { font-size: 18px; color: var(--c-text); font-weight: 500; }
.about-figure { border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--sh-lg); }

/* 时间轴 */
.timeline { position: relative; max-width: 900px; margin: 0 auto; }

.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  transform: translateX(-50%);
  background: linear-gradient(to bottom, transparent, var(--c-primary-100) 8%, var(--c-primary-100) 92%, transparent);
}

.tl-item { position: relative; width: 50%; padding: 0 44px 40px 0; }
.tl-item:nth-child(even) { margin-left: 50%; padding: 0 0 40px 44px; }

.tl-dot {
  position: absolute;
  top: 22px;
  right: -9px;
  width: 18px;
  height: 18px;
  border: 3px solid var(--c-primary-500);
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 0 5px rgba(37, 99, 235, .12);
}

.tl-item:nth-child(even) .tl-dot { right: auto; left: -9px; }

.tl-card {
  padding: 24px 26px;
  border: 1px solid var(--c-border-soft);
  border-radius: var(--r-md);
  background: #fff;
  box-shadow: var(--sh-sm);
  transition: transform var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
}

.tl-card:hover { transform: translateY(-4px); box-shadow: var(--sh-md); }
.tl-year { display: inline-block; margin-bottom: 8px; color: var(--c-primary-700); font-size: 15px; font-weight: 700; }
.tl-card h3 { font-size: 18px; margin-bottom: 8px; }
.tl-card p { font-size: 15px; }

/* 价值观 */
.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.value-card {
  padding: 36px 30px;
  border-radius: var(--r-lg);
  background: var(--c-bg-soft);
  border: 1px solid transparent;
  transition: transform var(--t-base) var(--ease), background-color var(--t-base) var(--ease),
              box-shadow var(--t-base) var(--ease), border-color var(--t-base) var(--ease);
}

.value-card:hover {
  background: #fff;
  border-color: var(--c-primary-100);
  transform: translateY(-6px);
  box-shadow: var(--sh-md);
}

.value-icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  margin-bottom: 20px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--c-primary-500), var(--c-primary-700));
  color: #fff;
}

.value-icon svg { width: 26px; height: 26px; }
.value-card h3 { font-size: 19px; margin-bottom: 10px; }
.value-card p { font-size: 15px; }

/* 资质荣誉 */
.honors-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.honor-card {
  padding: 20px;
  border: 1px solid var(--c-border-soft);
  border-radius: var(--r-md);
  background: #fff;
  text-align: center;
  filter: grayscale(100%);
  opacity: .72;
  transition: filter var(--t-base) var(--ease), opacity var(--t-base) var(--ease), transform var(--t-base) var(--ease);
}

.honor-card:hover { filter: none; opacity: 1; transform: translateY(-4px); }
.honor-card img { margin: 0 auto 12px; border-radius: var(--r-sm); }
.honor-card span { font-size: 14px; font-weight: 600; color: var(--c-text); }

/* ======================== 7-2. 产品服务 ======================== */
.service-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }

.service-card {
  display: flex;
  flex-direction: column;
  padding: 34px 32px;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--c-border-soft);
  box-shadow: var(--sh-sm);
  transition: transform var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease),
              border-color var(--t-base) var(--ease);
}

.service-card:hover { transform: translateY(-6px); box-shadow: var(--sh-lg); border-color: var(--c-primary-100); }
.service-head { display: flex; align-items: center; gap: 16px; margin-bottom: 18px; }

.service-icon {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  flex: none;
  border-radius: 15px;
  background: linear-gradient(135deg, var(--c-primary-500), var(--c-primary-700));
  color: #fff;
  box-shadow: 0 10px 22px rgba(37, 99, 235, .26);
}

.service-icon svg { width: 26px; height: 26px; }
.service-card h3 { font-size: 20px; }
.service-for { margin-bottom: 14px; font-size: 14px; color: var(--c-primary-700); font-weight: 600; }
.service-card > p { font-size: 15px; }

.service-points { margin: 18px 0 24px; display: flex; flex-direction: column; gap: 10px; }

.service-points li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
}

.service-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-primary-500);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, .14);
}

.service-card .btn { margin-top: auto; align-self: flex-start; }

/* 服务流程 */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.process-step { position: relative; text-align: center; padding: 0 12px; }

.process-step::after {
  content: "";
  position: absolute;
  top: 32px;
  right: -12px;
  width: 24px;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--c-primary-100) 0 6px, transparent 6px 12px);
}

.process-step:last-child::after { display: none; }

.process-num {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-primary-500), var(--c-primary-700));
  color: #fff;
  font-size: 22px;
  font-weight: 700;
  box-shadow: 0 12px 26px rgba(37, 99, 235, .26);
}

.process-step h3 { font-size: 18px; margin-bottom: 8px; }
.process-step p { font-size: 15px; }

/* FAQ */
.faq-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }

.faq-item {
  border: 1px solid var(--c-border-soft);
  border-radius: var(--r-md);
  background: #fff;
  overflow: hidden;
  transition: box-shadow var(--t-base) var(--ease), border-color var(--t-base) var(--ease);
}

.faq-item[open] { border-color: var(--c-primary-100); box-shadow: var(--sh-md); }

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 24px;
  font-size: 17px;
  font-weight: 600;
  color: var(--c-text);
  cursor: pointer;
  list-style: none;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary .arrow {
  flex: none;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--c-bg-soft);
  color: var(--c-primary-700);
  transition: transform var(--t-base) var(--ease), background-color var(--t-base) var(--ease),
              color var(--t-base) var(--ease);
}

.faq-item[open] summary .arrow {
  transform: rotate(180deg);
  background: var(--c-primary-500);
  color: #fff;
}

.faq-item summary .arrow svg { width: 14px; height: 14px; }
.faq-body { padding: 0 24px 22px; font-size: 15px; line-height: 1.9; }

/* ======================== 7-3. 客户案例 ======================== */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 44px;
}

.filter-btn {
  padding: 9px 20px;
  border: 1px solid var(--c-border);
  border-radius: var(--r-pill);
  background: #fff;
  color: var(--c-text-muted);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--t-base) var(--ease);
}

.filter-btn:hover { border-color: var(--c-primary-500); color: var(--c-primary-700); }

.filter-btn.is-active {
  border-color: transparent;
  background: linear-gradient(135deg, var(--c-primary-500), var(--c-primary-700));
  color: #fff;
  box-shadow: 0 10px 22px rgba(37, 99, 235, .24);
}

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

.case-item { transition: opacity var(--t-base) var(--ease), transform var(--t-base) var(--ease); }
.case-item.is-hidden { display: none; }

.case-body { padding: 22px 26px 26px; }
.case-body .tag { margin-bottom: 12px; }
.case-body h3 { font-size: 19px; margin-bottom: 10px; }
.case-body p { font-size: 15px; }

.case-result {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px dashed var(--c-border);
}

.case-result div strong { display: block; color: var(--c-primary-700); font-size: 20px; font-weight: 700; }
.case-result div span { font-size: 13px; color: var(--c-text-light); }

/* 客户评价 */
.testi-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.testi-card {
  position: relative;
  padding: 32px 28px;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--c-border-soft);
  box-shadow: var(--sh-sm);
  transition: transform var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
}

.testi-card:hover { transform: translateY(-6px); box-shadow: var(--sh-lg); }

.testi-card::before {
  content: "";
  position: absolute;
  left: 28px;
  top: 32px;
  bottom: 32px;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(to bottom, var(--c-primary-500), var(--c-primary-900));
}

.testi-quote { padding-left: 18px; font-size: 15px; line-height: 1.9; }

.testi-author {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 22px;
  padding-left: 18px;
}

.testi-avatar {
  width: 44px;
  height: 44px;
  flex: none;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-primary-100), var(--c-primary-500));
}

.testi-author strong { display: block; color: var(--c-text); font-size: 15px; }
.testi-author span { font-size: 13px; color: var(--c-text-light); }

/* ======================== 7-4. 联系我们 ======================== */
.contact-layout {
  display: grid;
  grid-template-columns: .95fr 1.05fr;
  gap: 48px;
  align-items: start;
}

.info-list { display: flex; flex-direction: column; gap: 16px; }

.info-card {
  display: flex;
  gap: 16px;
  padding: 22px 24px;
  border: 1px solid var(--c-border-soft);
  border-radius: var(--r-md);
  background: #fff;
  box-shadow: var(--sh-sm);
  transition: transform var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
}

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

.info-icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  flex: none;
  border-radius: 13px;
  background: linear-gradient(135deg, var(--c-primary-50), #E4ECFE);
  color: var(--c-primary-700);
}

.info-icon svg { width: 22px; height: 22px; }
.info-card h3 { font-size: 15px; color: var(--c-text-light); font-weight: 600; margin-bottom: 4px; }
.info-card p { font-size: 16px; color: var(--c-text); font-weight: 600; }
.info-card .sub { font-size: 14px; color: var(--c-text-light); font-weight: 400; }

/* 表单 */
.form-card {
  padding: 40px;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--c-border-soft);
  box-shadow: var(--sh-md);
}

.form-card h2 { font-size: 24px; margin-bottom: 8px; }
.form-card .form-tip { margin-bottom: 28px; font-size: 14px; }

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

.field { position: relative; margin-bottom: 18px; }

.field input,
.field textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  background: #fff;
  font-family: inherit;
  font-size: 15px;
  color: var(--c-text);
  transition: border-color var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
}

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

.field input:hover,
.field textarea:hover { border-color: #C7D2E5; }

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--c-primary-500);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, .12);
}

.field input::placeholder,
.field textarea::placeholder { color: var(--c-text-light); }

.field.is-invalid input,
.field.is-invalid textarea { border-color: var(--c-danger); }

.field-error {
  display: none;
  margin-top: 6px;
  font-size: 13px;
  color: var(--c-danger);
}

.field.is-invalid .field-error { display: block; }

.form-note {
  margin-top: 14px;
  padding: 12px 16px;
  border-radius: var(--r-sm);
  background: var(--c-primary-50);
  font-size: 13px;
  color: var(--c-primary-700);
}

.form-alert {
  display: none;
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: var(--r-sm);
  background: #F0FDF4;
  color: var(--c-success);
  font-size: 14px;
  font-weight: 600;
}

.form-alert.is-visible { display: block; }

/* 地图占位 */
.map-box {
  margin-top: 24px;
  padding: 56px 24px;
  border: 1px dashed var(--c-border);
  border-radius: var(--r-lg);
  background: var(--c-bg-soft);
  text-align: center;
}

.map-box .map-icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: #fff;
  color: var(--c-primary-700);
  box-shadow: var(--sh-sm);
}

.map-box strong { display: block; color: var(--c-text); font-size: 16px; }
.map-box p { margin-top: 6px; font-size: 14px; }

/* ======================== 7-5. 404 ======================== */
.error-page {
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: calc(var(--nav-h) + 80px) 24px 80px;
  background: radial-gradient(900px 500px at 50% 0%, rgba(37, 99, 235, .16), transparent 62%), var(--c-bg-soft);
  text-align: center;
}

.error-code {
  font-size: 148px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.04em;
  background: linear-gradient(135deg, var(--c-primary-500), var(--c-primary-900));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.error-page h1 { margin-top: 12px; font-size: 30px; }
.error-page .error-desc { margin-top: 14px; font-size: 17px; }
.error-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.error-links { display: flex; justify-content: center; flex-wrap: wrap; gap: 24px; margin-top: 34px; font-size: 15px; }
.error-links a { color: var(--c-primary-700); font-weight: 600; }
.error-links a:hover { text-decoration: underline; }

/* ============================ 8. 页脚 ============================ */
.site-footer {
  background: linear-gradient(180deg, #0A2547 0%, var(--c-primary-900) 100%);
  color: rgba(255, 255, 255, .68);
  font-size: 15px;
}

.footer-main { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 48px; padding: 72px 0 48px; }

.footer-brand .logo { margin-bottom: 20px; }
.footer-brand p { max-width: 320px; line-height: 1.9; }

.footer-social { display: flex; gap: 10px; margin-top: 24px; }

.footer-social a {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 50%;
  color: rgba(255, 255, 255, .82);
  transition: all var(--t-base) var(--ease);
}

.footer-social a:hover {
  background: var(--c-primary-500);
  border-color: var(--c-primary-500);
  color: #fff;
  transform: translateY(-3px);
}

.footer-social svg { width: 18px; height: 18px; }

.footer-col h4 {
  margin-bottom: 20px;
  color: #fff;
  font-size: 16px;
  font-weight: 600;
}

.footer-col li + li { margin-top: 12px; }
.footer-col a { color: rgba(255, 255, 255, .68); }
.footer-col a:hover { color: #fff; }

.footer-contact li { display: flex; gap: 10px; align-items: flex-start; }
.footer-contact svg { flex: none; width: 16px; height: 16px; margin-top: 5px; color: var(--c-primary-500); }

.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .10); padding: 22px 0; }

.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 14px;
}

.footer-bottom a:hover { color: #fff; }

.footer-beian { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.footer-beian a { display: inline-flex; align-items: center; gap: 6px; }
.footer-beian svg { width: 14px; height: 14px; }

/* 返回顶部 */
.to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 90;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-primary-500), var(--c-primary-700));
  color: #fff;
  box-shadow: 0 12px 28px rgba(37, 99, 235, .34);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--t-base) var(--ease), transform var(--t-base) var(--ease),
              visibility var(--t-base) var(--ease);
}

.to-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { transform: translateY(-3px); }
.to-top svg { width: 20px; height: 20px; }

/* ------------------------------------------------------------------
   Header when scrolled (JS adds .is-scrolled).
   The white background already applied; these rules make the text
   dark so it does not turn white-on-white.
   ------------------------------------------------------------------ */
.site-header.is-scrolled .nav-link { color: var(--c-text-muted); }
.site-header.is-scrolled .nav-link:hover,
.site-header.is-scrolled .nav-link.is-active { color: var(--c-primary-700); }
.site-header.is-scrolled .logo-text { color: var(--c-text); }
.site-header.is-scrolled .nav-toggle { border-color: var(--c-border); color: var(--c-text); background: #fff; }
.site-header.is-scrolled .nav-toggle span { background: var(--c-text); }