/* =========================================================================
   曲阜博纳软件有限公司 企业官网 — 全局样式表
   文件：assets/css/style.css
   技术：纯 CSS3，零外部依赖（无 CDN / 字体库 / 图标库 / 图片外链）
   目录：
     01 主题变量
     02 基础重置与排版
     03 通用布局工具
     04 按钮
     05 顶部导航
     06 首屏 Hero
     07 信任数字条
     08 区块标题
     09 业务板块卡片
     10 差异化优势（为什么选择我们）
     11 交付流程时间轴
     12 技术能力标签墙
     13 行业解决方案卡片
     14 常见问题 FAQ
     15 底部 CTA 条
     16 页脚
     17 内页 Hero / 面包屑
     18 关于我们（简介 / 时间轴 / 文化 / 信息表）
     19 业务服务页
     20 解决方案页
     21 联系我们页 / 表单
     22 辅助组件（返回顶部 / 提示）
     23 滚动渐显动画
     24 响应式断点（1200 / 992 / 768 / 480）
   ========================================================================= */

/* =========================================================================
   01 主题变量
   ========================================================================= */
:root {
  /* 品牌色 */
  --brand: #0B5FFF;
  --brand-700: #0747C4;
  --brand-300: #6FA0FF;
  --brand-050: rgba(11, 95, 255, .08);
  --cyan: #12C8B8;
  --cyan-700: #0E9F92;
  --cyan-050: rgba(18, 200, 184, .14);

  /* 深空蓝 */
  --deep: #071A33;
  --deep-2: #0B2244;
  --deep-3: #0F2C57;

  /* 中性色 */
  --light: #F4F7FC;
  --white: #FFFFFF;
  --text: #1B2A41;
  --muted: #5A6B84;
  --line: #E3EAF4;
  --line-2: #D6E0EE;

  /* 渐变 */
  --grad-brand: linear-gradient(135deg, #0B5FFF 0%, #12C8B8 100%);
  --grad-brand-soft: linear-gradient(140deg, rgba(11, 95, 255, .12), rgba(18, 200, 184, .12));
  --grad-deep: linear-gradient(160deg, #071A33 0%, #0B2244 55%, #0F2C57 100%);

  /* 阴影 */
  --sh-1: 0 2px 8px rgba(11, 34, 68, .06);
  --sh-2: 0 8px 24px rgba(11, 34, 68, .08);
  --sh-3: 0 18px 44px rgba(11, 34, 68, .14);
  --sh-brand: 0 12px 28px rgba(11, 95, 255, .28);

  /* 圆角 */
  --r-sm: 8px;
  --r: 12px;
  --r-lg: 16px;
  --r-xl: 22px;
  --r-pill: 999px;

  /* 尺寸 */
  --container: 1200px;
  --header-h: 72px;

  /* 过渡与字体 */
  --t: .28s cubic-bezier(.4, .2, .2, 1);
  --font: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
}

/* =========================================================================
   02 基础重置与排版
   ========================================================================= */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 .6em;
  font-weight: 800;
  line-height: 1.3;
  color: inherit;
  letter-spacing: -.01em;
}

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

a { color: var(--brand); text-decoration: none; transition: color var(--t); }
a:hover { color: var(--brand-700); }

img, svg { max-width: 100%; vertical-align: middle; }
img { height: auto; }
ul, ol { margin: 0; padding: 0; list-style: none; }

button { font: inherit; color: inherit; }

strong { font-weight: 700; }

/* 键盘焦点可见 */
:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

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

/* 页首跳转链接 */
.skip-link {
  position: absolute;
  top: -60px; left: 16px;
  z-index: 2000;
  padding: 10px 18px;
  background: var(--brand);
  color: #fff;
  border-radius: 0 0 var(--r) var(--r);
  font-weight: 600;
  transition: top var(--t);
}
.skip-link:focus { top: 0; color: #fff; }

/* =========================================================================
   03 通用布局工具
   ========================================================================= */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 96px 0; position: relative; }
.section--tight { padding: 64px 0; }
.section--alt { background: var(--light); }
.section--dark { background: var(--grad-deep); color: #fff; }
.section--dark h2, .section--dark h3 { color: #fff; }

.grid { display: grid; gap: 24px; }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mt-40 { margin-top: 40px; }
.mt-56 { margin-top: 56px; }

/* =========================================================================
   04 按钮
   ========================================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--t), box-shadow var(--t), background var(--t), color var(--t), border-color var(--t);
}
.btn svg { width: 18px; height: 18px; flex: none; }

.btn--primary { background: var(--grad-brand); color: #fff; box-shadow: var(--sh-brand); }
.btn--primary:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 16px 34px rgba(11, 95, 255, .36); }

.btn--outline { background: #fff; color: var(--brand); border-color: var(--line-2); }
.btn--outline:hover { color: var(--brand); border-color: var(--brand); transform: translateY(-2px); box-shadow: var(--sh-2); }

.btn--ghost { background: rgba(255, 255, 255, .06); color: #fff; border-color: rgba(255, 255, 255, .36); }
.btn--ghost:hover { color: #fff; background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .62); }

.btn--light { background: #fff; color: var(--deep); }
.btn--light:hover { color: var(--brand); transform: translateY(-2px); box-shadow: var(--sh-2); }

.btn--lg { padding: 15px 30px; font-size: 16px; }
.btn--block { width: 100%; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  color: var(--brand);
}
.link-arrow svg { width: 16px; height: 16px; transition: transform var(--t); }
.link-arrow:hover svg { transform: translateX(4px); }

/* =========================================================================
   05 顶部导航
   ========================================================================= */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(7, 26, 51, .58);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, .07);
  transition: background var(--t), box-shadow var(--t), border-color var(--t);
}
.site-header.nav-scrolled {
  background: rgba(7, 26, 51, .97);
  border-bottom-color: rgba(255, 255, 255, .1);
  box-shadow: 0 10px 30px rgba(7, 26, 51, .3);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand { display: flex; align-items: center; gap: 11px; color: #fff; flex: none; }
.brand:hover { color: #fff; }
.brand-logo { width: 38px; height: 38px; border-radius: 11px; flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 17px; font-weight: 700; letter-spacing: .01em; }
.brand-text small { font-size: 10px; letter-spacing: .16em; color: rgba(255, 255, 255, .62); font-weight: 500; }

.main-nav { margin-left: auto; }
.main-nav ul { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  display: block;
  padding: 9px 15px;
  border-radius: var(--r-pill);
  font-size: 15px;
  font-weight: 500;
  color: rgba(255, 255, 255, .82);
  transition: color var(--t), background var(--t);
}
.main-nav a:hover { color: #fff; background: rgba(255, 255, 255, .1); }
.main-nav a.active { color: #fff; background: rgba(11, 95, 255, .32); }

.header-cta { margin-left: 18px; flex: none; }

/* 汉堡菜单按钮 */
.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  margin-left: 8px;
  border: 1px solid rgba(255, 255, 255, .24);
  border-radius: var(--r-sm);
  background: rgba(255, 255, 255, .06);
  cursor: pointer;
  padding: 0;
  position: relative;
}
.nav-toggle span {
  position: absolute;
  left: 11px; right: 11px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform var(--t), opacity var(--t), top var(--t);
}
.nav-toggle span:nth-child(1) { top: 14px; }
.nav-toggle span:nth-child(2) { top: 21px; }
.nav-toggle span:nth-child(3) { top: 28px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { top: 21px; transform: rotate(-45deg); }

/* =========================================================================
   06 首屏 Hero
   ========================================================================= */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--grad-deep);
  color: #fff;
  padding: calc(var(--header-h) + 76px) 0 104px;
}
.hero::before {
  content: "";
  position: absolute;
  top: -200px; right: -140px;
  width: 640px; height: 640px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(11, 95, 255, .5), rgba(11, 95, 255, 0) 68%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  bottom: -260px; left: -160px;
  width: 560px; height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(18, 200, 184, .26), rgba(18, 200, 184, 0) 70%);
  pointer-events: none;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 68% 32%, #000 10%, transparent 74%);
  mask-image: radial-gradient(ellipse 70% 70% at 68% 32%, #000 10%, transparent 74%);
  pointer-events: none;
}
.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: 9px;
  padding: 7px 16px;
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, .09);
  border: 1px solid rgba(255, 255, 255, .16);
  font-size: 13px;
  font-weight: 500;
  color: rgba(255, 255, 255, .9);
  margin-bottom: 24px;
}
.hero-badge svg { width: 15px; height: 15px; color: var(--cyan); }
.hero-title {
  font-size: clamp(30px, 4.4vw, 52px);
  line-height: 1.18;
  font-weight: 800;
  letter-spacing: -.02em;
  margin: 0 0 18px;
  color: #fff;
}
.hero-title .accent {
  background: linear-gradient(100deg, #6FA0FF 0%, #12C8B8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.hero-sub {
  font-size: clamp(17px, 1.6vw, 21px);
  font-weight: 500;
  color: rgba(255, 255, 255, .92);
  margin: 0 0 16px;
}
.hero-desc {
  max-width: 560px;
  font-size: 15.5px;
  line-height: 1.9;
  color: rgba(255, 255, 255, .68);
  margin: 0 0 32px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 34px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 12px 26px; }
.hero-points li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, .78);
}
.hero-points svg { width: 16px; height: 16px; color: var(--cyan); flex: none; }

.hero-visual { display: flex; justify-content: center; }
.hero-visual svg { width: 100%; max-width: 500px; height: auto; }

/* =========================================================================
   07 信任数字条
   ========================================================================= */
.stats { position: relative; z-index: 6; margin-top: -58px; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  box-shadow: var(--sh-3);
  overflow: hidden;
}
.stat { padding: 34px 24px; text-align: center; border-right: 1px solid var(--line); }
.stat:last-child { border-right: 0; }
.stat-num {
  font-size: clamp(30px, 3.4vw, 42px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.02em;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  margin-bottom: 8px;
}
.stat-label { font-size: 15px; font-weight: 700; color: var(--deep); margin-bottom: 4px; }
.stat-desc { font-size: 13px; color: var(--muted); line-height: 1.6; }

/* =========================================================================
   08 区块标题
   ========================================================================= */
.section-head { max-width: 780px; margin: 0 auto 56px; text-align: center; }
.section-head.left { margin-left: 0; margin-right: 0; text-align: left; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 15px;
  margin-bottom: 18px;
  border-radius: var(--r-pill);
  background: var(--brand-050);
  color: var(--brand);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.section--dark .eyebrow { background: var(--cyan-050); color: var(--cyan); }
.section-title { font-size: clamp(24px, 3vw, 36px); line-height: 1.3; margin: 0 0 16px; }
.section-sub { font-size: 16px; line-height: 1.85; color: var(--muted); margin: 0; }
.section--dark .section-sub { color: rgba(255, 255, 255, .72); }
.section--dark .section-title { color: #fff; }

/* =========================================================================
   09 业务板块卡片
   ========================================================================= */
.svc-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 32px 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-1);
  overflow: hidden;
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
}
.svc-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--grad-brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s ease;
}
.svc-card:hover { transform: translateY(-6px); box-shadow: var(--sh-3); border-color: #CFE0FF; }
.svc-card:hover::before { transform: scaleX(1); }
.svc-icon {
  width: 56px; height: 56px;
  display: grid;
  place-items: center;
  border-radius: var(--r);
  background: var(--grad-brand-soft);
  color: var(--brand);
  margin-bottom: 20px;
  flex: none;
}
.svc-icon svg { width: 28px; height: 28px; }
.svc-card h3 { font-size: 19px; margin-bottom: 10px; }
.svc-tagline { font-size: 14.5px; color: var(--brand); font-weight: 600; margin: 0 0 16px; }
.svc-list { margin-bottom: 20px; }
.svc-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}
.svc-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 11px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--grad-brand);
}
.svc-scenes {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px dashed var(--line-2);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chip {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  border-radius: var(--r-pill);
  background: var(--light);
  color: var(--muted);
  font-size: 12.5px;
  font-weight: 500;
  white-space: nowrap;
}
.svc-card:hover .chip { background: var(--brand-050); color: var(--brand-700); }

/* =========================================================================
   10 差异化优势
   ========================================================================= */
.why-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.why-card {
  display: flex;
  gap: 18px;
  padding: 26px 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-1);
  transition: transform var(--t), box-shadow var(--t);
}
.why-card:hover { transform: translateY(-4px); box-shadow: var(--sh-2); }
.why-num {
  flex: none;
  width: 42px; height: 42px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--grad-brand);
  color: #fff;
  font-size: 15px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}
.why-card h3 { font-size: 16.5px; margin-bottom: 6px; }
.why-card p { font-size: 14px; color: var(--muted); line-height: 1.8; margin: 0; }

/* =========================================================================
   11 交付流程时间轴
   ========================================================================= */
.process {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 20px;
}
.process::before {
  content: "";
  position: absolute;
  top: 30px; left: 8%; right: 8%;
  height: 2px;
  background: linear-gradient(90deg, rgba(11, 95, 255, .18), rgba(18, 200, 184, .45), rgba(11, 95, 255, .18));
  z-index: 0;
}
.process-step { position: relative; z-index: 1; text-align: center; padding: 0 6px; }
.process-dot {
  width: 60px; height: 60px;
  margin: 0 auto 18px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--line-2);
  box-shadow: var(--sh-1);
  color: var(--brand);
  transition: border-color var(--t), transform var(--t), box-shadow var(--t);
}
.process-dot svg { width: 26px; height: 26px; }
.process-step:hover .process-dot { border-color: var(--brand); transform: translateY(-4px); box-shadow: var(--sh-2); }
.process-step h3 { font-size: 16px; margin-bottom: 6px; }
.process-step p { font-size: 13.5px; color: var(--muted); line-height: 1.75; margin: 0; }
.process-index {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--brand);
  letter-spacing: .1em;
  margin-bottom: 6px;
}

/* =========================================================================
   12 技术能力标签墙
   ========================================================================= */
.tag-wall { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .14);
  color: rgba(255, 255, 255, .9);
  font-size: 14px;
  font-weight: 500;
  transition: background var(--t), border-color var(--t), transform var(--t);
}
.tag:hover { background: rgba(11, 95, 255, .28); border-color: rgba(111, 160, 255, .55); transform: translateY(-3px); }
.tag svg { width: 15px; height: 15px; color: var(--cyan); flex: none; }

/* =========================================================================
   13 行业解决方案卡片
   ========================================================================= */
.ind-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 30px 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-1);
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
}
.ind-card:hover { transform: translateY(-6px); box-shadow: var(--sh-3); border-color: #CFE0FF; }
.ind-icon {
  width: 50px; height: 50px;
  display: grid;
  place-items: center;
  border-radius: var(--r);
  background: var(--grad-brand-soft);
  color: var(--brand);
  margin-bottom: 18px;
}
.ind-icon svg { width: 26px; height: 26px; }
.ind-card h3 { font-size: 17.5px; margin-bottom: 8px; }
.ind-card p { font-size: 14px; color: var(--muted); line-height: 1.8; margin: 0 0 16px; }
.ind-card .link-arrow { margin-top: auto; font-size: 14px; }

/* =========================================================================
   14 常见问题 FAQ
   ========================================================================= */
.faq-list { max-width: 880px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  margin-bottom: 14px;
  overflow: hidden;
  transition: box-shadow var(--t), border-color var(--t);
}
.faq-item:hover { border-color: #CFE0FF; box-shadow: var(--sh-1); }
.faq-item.is-open { border-color: #CFE0FF; box-shadow: var(--sh-2); }
.faq-q { margin: 0; font-size: 16px; }
.faq-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 24px;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--deep);
  line-height: 1.55;
}
.faq-trigger:hover { color: var(--brand); }
.faq-icon {
  position: relative;
  flex: none;
  width: 26px; height: 26px;
  border-radius: 50%;
  background: var(--brand-050);
  transition: background var(--t), transform var(--t);
}
.faq-icon::before, .faq-icon::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  width: 12px; height: 2px;
  background: var(--brand);
  border-radius: 2px;
  transform: translate(-50%, -50%);
  transition: transform var(--t), opacity var(--t);
}
.faq-icon::after { transform: translate(-50%, -50%) rotate(90deg); }
.faq-item.is-open .faq-icon { background: var(--grad-brand); }
.faq-item.is-open .faq-icon::before,
.faq-item.is-open .faq-icon::after { background: #fff; }
.faq-item.is-open .faq-icon::after { transform: translate(-50%, -50%) rotate(0deg); opacity: 0; }
.faq-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height .36s ease;
}
.faq-panel-inner { padding: 0 24px 22px; }
.faq-panel p { font-size: 14.5px; line-height: 1.9; color: var(--muted); margin: 0; }

/* =========================================================================
   15 底部 CTA 条
   ========================================================================= */
.cta-band { position: relative; overflow: hidden; background: var(--grad-deep); color: #fff; padding: 72px 0; }
.cta-band::before {
  content: "";
  position: absolute;
  top: -160px; right: -80px;
  width: 460px; height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(18, 200, 184, .3), transparent 68%);
  pointer-events: none;
}
.cta-inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-inner h2 { font-size: clamp(22px, 2.6vw, 32px); margin: 0 0 10px; color: #fff; }
.cta-inner p { margin: 0; color: rgba(255, 255, 255, .72); font-size: 15.5px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; }

/* =========================================================================
   16 页脚
   ========================================================================= */
.site-footer { background: #051425; color: rgba(255, 255, 255, .68); font-size: 14px; }
.footer-top { padding: 64px 0 48px; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
  gap: 40px;
}
.footer-brand .brand { margin-bottom: 18px; }
.footer-desc { font-size: 13.5px; line-height: 1.85; color: rgba(255, 255, 255, .58); margin: 0; }
.footer-col h4 {
  font-size: 15px;
  color: #fff;
  margin: 0 0 18px;
  font-weight: 700;
  letter-spacing: .02em;
}
.footer-col li { margin-bottom: 11px; line-height: 1.7; }
.footer-col a { color: rgba(255, 255, 255, .66); font-size: 13.5px; }
.footer-col a:hover { color: var(--cyan); }
.footer-contact li { display: flex; gap: 10px; font-size: 13.5px; color: rgba(255, 255, 255, .66); }
.footer-contact svg { width: 16px; height: 16px; color: var(--cyan); flex: none; margin-top: 5px; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .09);
  padding: 20px 0;
}
.footer-bottom .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.footer-bottom p { margin: 0; font-size: 13px; color: rgba(255, 255, 255, .52); }

/* =========================================================================
   17 内页 Hero / 面包屑
   ========================================================================= */
.page-hero {
  position: relative;
  overflow: hidden;
  background: var(--grad-deep);
  color: #fff;
  padding: calc(var(--header-h) + 62px) 0 66px;
}
.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: radial-gradient(ellipse 62% 100% at 84% 40%, #000 5%, transparent 76%);
  mask-image: radial-gradient(ellipse 62% 100% at 84% 40%, #000 5%, transparent 76%);
  pointer-events: none;
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { font-size: clamp(26px, 3.6vw, 42px); margin: 0 0 14px; color: #fff; }
.page-hero-sub { max-width: 720px; font-size: 16px; line-height: 1.85; color: rgba(255, 255, 255, .72); margin: 0; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, .6);
  margin-bottom: 18px;
}
.breadcrumb a { color: rgba(255, 255, 255, .78); }
.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb span[aria-hidden] { color: rgba(255, 255, 255, .34); }

/* =========================================================================
   18 关于我们
   ========================================================================= */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 48px;
  align-items: start;
}
.about-copy p { font-size: 15.5px; line-height: 1.95; color: var(--muted); margin-bottom: 18px; }
.about-copy p strong { color: var(--text); }

.info-panel {
  padding: 26px;
  background: var(--grad-deep);
  border-radius: var(--r-lg);
  color: #fff;
  box-shadow: var(--sh-3);
}
.info-panel h3 { color: #fff; font-size: 17px; margin-bottom: 18px; }
.info-panel-list li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, .16);
  font-size: 14px;
}
.info-panel-list li:last-child { border-bottom: 0; }
.info-panel-list .k { color: rgba(255, 255, 255, .6); flex: none; }
.info-panel-list .v { color: #fff; font-weight: 600; text-align: right; }

/* 发展历程时间轴 */
.timeline { position: relative; max-width: 900px; margin: 0 auto; padding-left: 34px; }
.timeline::before {
  content: "";
  position: absolute;
  top: 8px; bottom: 8px; left: 9px;
  width: 2px;
  background: linear-gradient(180deg, var(--brand), var(--cyan));
  opacity: .35;
}
.timeline-item { position: relative; padding: 0 0 38px 8px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -33px; top: 6px;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--brand);
  box-shadow: 0 0 0 4px rgba(11, 95, 255, .12);
}
.timeline-year {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--brand);
  background: var(--brand-050);
  padding: 4px 12px;
  border-radius: var(--r-pill);
  margin-bottom: 10px;
}
.timeline-item h3 { font-size: 17px; margin-bottom: 8px; }
.timeline-item p { font-size: 14.5px; line-height: 1.9; color: var(--muted); margin: 0; }

/* 企业文化卡片 */
.culture-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.culture-card {
  padding: 30px 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-1);
  transition: transform var(--t), box-shadow var(--t);
}
.culture-card:hover { transform: translateY(-5px); box-shadow: var(--sh-2); }
.culture-icon {
  width: 52px; height: 52px;
  display: grid; place-items: center;
  border-radius: var(--r);
  background: var(--grad-brand-soft);
  color: var(--brand);
  margin-bottom: 18px;
}
.culture-icon svg { width: 26px; height: 26px; }
.culture-card h3 { font-size: 17px; margin-bottom: 10px; }
.culture-card p { font-size: 14.5px; color: var(--muted); line-height: 1.85; margin: 0; }

/* 核心能力 */
.cap-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.cap-item {
  display: flex;
  gap: 16px;
  padding: 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-1);
}
.cap-item .svc-icon { width: 48px; height: 48px; margin-bottom: 0; }
.cap-item .svc-icon svg { width: 24px; height: 24px; }
.cap-item h3 { font-size: 16px; margin-bottom: 6px; }
.cap-item p { font-size: 14px; color: var(--muted); line-height: 1.8; margin: 0; }

/* 工商信息表 */
.table-wrap {
  overflow-x: auto;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-2);
}
.info-table { width: 100%; border-collapse: collapse; min-width: 560px; }
.info-table th,
.info-table td {
  padding: 16px 22px;
  text-align: left;
  font-size: 14.5px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  line-height: 1.75;
}
.info-table thead th {
  background: var(--light);
  color: var(--deep);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: .02em;
  white-space: nowrap;
}
.info-table tbody th {
  width: 220px;
  color: var(--muted);
  font-weight: 600;
  background: #FBFCFE;
  white-space: nowrap;
}
.info-table tbody td { color: var(--text); }
.info-table tbody tr:last-child th,
.info-table tbody tr:last-child td { border-bottom: 0; }
.info-table tbody tr:hover td { background: #F7FAFF; }

/* 承诺列表 */
.promise-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.promise-item {
  padding: 26px 24px;
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .14);
}
.promise-item .svc-icon {
  width: 46px; height: 46px;
  margin-bottom: 16px;
  background: rgba(18, 200, 184, .16);
  color: var(--cyan);
}
.promise-item .svc-icon svg { width: 24px; height: 24px; }
.promise-item h3 { font-size: 16.5px; margin-bottom: 8px; color: #fff; }
.promise-item p { font-size: 14px; line-height: 1.85; color: rgba(255, 255, 255, .7); margin: 0; }

/* =========================================================================
   19 业务服务页
   ========================================================================= */
.svc-block { padding: 72px 0; }
.svc-block + .svc-block { border-top: 1px solid var(--line); }
.svc-block:nth-child(even) { background: var(--light); }
.svc-block-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.svc-block.reverse .svc-block-media { order: -1; }
.svc-block-head { display: flex; align-items: center; gap: 16px; margin-bottom: 18px; }
.svc-block-index {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .12em;
  color: var(--brand);
  background: var(--brand-050);
  padding: 6px 13px;
  border-radius: var(--r-pill);
}
.svc-block h2 { font-size: clamp(21px, 2.4vw, 28px); margin: 0 0 14px; }
.svc-block-tagline { font-size: 15.5px; font-weight: 600; color: var(--brand); margin: 0 0 16px; }
.svc-block-copy > p { font-size: 15px; line-height: 1.9; color: var(--muted); margin-bottom: 22px; }
.cap-block { margin-bottom: 22px; }
.cap-block h4 {
  font-size: 13px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 12px;
  font-weight: 700;
}
.cap-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 22px; }
.cap-2col li {
  position: relative;
  padding-left: 24px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
}
.cap-2col li::before {
  content: "";
  position: absolute;
  left: 4px; top: 9px;
  width: 8px; height: 8px;
  border-radius: 2px;
  background: var(--grad-brand);
  transform: rotate(45deg);
}
.svc-block-media { display: flex; justify-content: center; }
.svc-visual {
  width: 100%;
  max-width: 440px;
  padding: 34px 30px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  box-shadow: var(--sh-3);
}
.svc-block:nth-child(even) .svc-visual { background: #fff; }
.svc-visual svg { width: 100%; height: auto; }
.deliver-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px dashed var(--line-2);
}
.deliver-row .deliver-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  align-self: center;
  margin-right: 2px;
}
.scene-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.scene-card {
  flex: 1 1 180px;
  padding: 16px 18px;
  border-radius: var(--r);
  background: var(--light);
  border-left: 3px solid var(--brand);
}
.svc-block--alt .scene-card { background: #fff; box-shadow: var(--sh-1); }
.scene-card h5 { font-size: 14px; margin: 0 0 5px; color: var(--deep); }
.scene-card p { font-size: 13px; line-height: 1.7; color: var(--muted); margin: 0; }

/* 经营范围全览标签墙（浅色版） */
.tag-wall--light .tag {
  background: #fff;
  border-color: var(--line-2);
  color: var(--text);
  box-shadow: var(--sh-1);
}
.tag-wall--light .tag:hover { background: #fff; border-color: var(--brand); color: var(--brand); }
.tag-wall--light .tag svg { color: var(--brand); }

/* =========================================================================
   20 解决方案页
   ========================================================================= */
.sol-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  box-shadow: var(--sh-1);
  overflow: hidden;
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
}
.sol-card:hover { transform: translateY(-5px); box-shadow: var(--sh-3); border-color: #CFE0FF; }
.sol-head {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 28px 30px 22px;
  border-bottom: 1px solid var(--line);
}
.sol-head .ind-icon { margin-bottom: 0; flex: none; }
.sol-head h3 { font-size: 20px; margin: 0 0 4px; }
.sol-head .sol-sub { font-size: 13.5px; color: var(--muted); margin: 0; }
.sol-body { padding: 26px 30px 30px; display: grid; gap: 20px; }
.sol-part { position: relative; padding-left: 22px; }
.sol-part::before {
  content: "";
  position: absolute;
  left: 0; top: 3px; bottom: 3px;
  width: 3px;
  border-radius: 3px;
  background: var(--line-2);
}
.sol-part.pain::before { background: #FFB020; }
.sol-part.plan::before { background: var(--brand); }
.sol-part.value::before { background: var(--cyan); }
.sol-part h4 {
  font-size: 14px;
  margin: 0 0 8px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.sol-part h4 .badge {
  font-size: 11.5px;
  font-weight: 700;
  padding: 2px 9px;
  border-radius: var(--r-pill);
  letter-spacing: .04em;
}
.sol-part.pain h4 .badge { background: rgba(255, 176, 32, .14); color: #B87300; }
.sol-part.plan h4 .badge { background: var(--brand-050); color: var(--brand); }
.sol-part.value h4 .badge { background: var(--cyan-050); color: var(--cyan-700); }
.sol-part p { font-size: 14px; line-height: 1.85; color: var(--muted); margin: 0; }
.sol-part ul { margin-top: 6px; }
.sol-part ul li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--muted);
}
.sol-part ul li::before {
  content: "";
  position: absolute;
  left: 2px; top: 11px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--brand-300);
}

/* 技术栈分组 */
.stack-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 22px; }
.stack-card {
  padding: 24px 22px;
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .14);
}
.stack-card h3 {
  font-size: 15px;
  color: #fff;
  margin: 0 0 14px;
  display: flex;
  align-items: center;
  gap: 9px;
}
.stack-card h3 svg { width: 18px; height: 18px; color: var(--cyan); }
.stack-card li {
  font-size: 13.5px;
  color: rgba(255, 255, 255, .72);
  padding: 7px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, .12);
}
.stack-card li:last-child { border-bottom: 0; }

/* =========================================================================
   21 联系我们页 / 表单
   ========================================================================= */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 44px;
  align-items: start;
}
.contact-card {
  padding: 30px 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-2);
}
.contact-card h3 { font-size: 18px; margin-bottom: 18px; display: flex; align-items: center; gap: 10px; }
.contact-card h3 svg { width: 20px; height: 20px; color: var(--brand); }
.contact-list li {
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--line-2);
}
.contact-list li:last-child { border-bottom: 0; }
.contact-list .ci-icon {
  flex: none;
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: 10px;
  background: var(--grad-brand-soft);
  color: var(--brand);
}
.contact-list .ci-icon svg { width: 20px; height: 20px; }
.contact-list .ci-label { font-size: 12.5px; color: var(--muted); margin-bottom: 3px; }
.contact-list .ci-value { font-size: 15px; font-weight: 600; color: var(--text); line-height: 1.6; word-break: break-word; }
.contact-list .ci-value .note { font-weight: 400; font-size: 13px; color: var(--muted); }
/* 联系方式链接（电话 / 邮箱 / 页内锚点） */
.ci-link {
  color: var(--brand);
  text-decoration: none;
  border-bottom: 1px solid rgba(11, 95, 255, .3);
  transition: color .2s ease, border-color .2s ease;
  word-break: break-all;
}
.ci-link:hover,
.ci-link:focus-visible {
  color: var(--brand-700);
  border-bottom-color: var(--brand-700);
}

/* 表单 */
.form-card {
  padding: 34px 32px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-3);
}
.form-card h3 { font-size: 18px; margin-bottom: 8px; }
.form-card .form-intro { font-size: 14px; color: var(--muted); margin-bottom: 24px; line-height: 1.8; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: 13.5px; font-weight: 600; color: var(--deep); }
.field label .req { color: #E5484D; margin-left: 2px; }
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  font-family: inherit;
  font-size: 14.5px;
  color: var(--text);
  background: #FBFCFE;
  border: 1px solid var(--line-2);
  border-radius: var(--r-sm);
  transition: border-color var(--t), box-shadow var(--t), background var(--t);
  appearance: none;
}
.field textarea { resize: vertical; min-height: 128px; line-height: 1.75; }
.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235A6B84' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 18px;
  padding-right: 38px;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  background: #fff;
  border-color: var(--brand);
  box-shadow: 0 0 0 4px rgba(11, 95, 255, .12);
}
.field.has-error input,
.field.has-error select,
.field.has-error textarea {
  border-color: #E5484D;
  background: #FFF7F7;
}
.field.has-error input:focus,
.field.has-error select:focus,
.field.has-error textarea:focus { box-shadow: 0 0 0 4px rgba(229, 72, 77, .12); }
.field-error {
  font-size: 12.5px;
  color: #D03236;
  min-height: 0;
  line-height: 1.5;
  display: none;
}
.field.has-error .field-error { display: block; }
.form-actions { margin-top: 22px; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.form-privacy { font-size: 12.5px; color: var(--muted); line-height: 1.7; }
.form-status {
  margin-top: 18px;
  padding: 14px 18px;
  border-radius: var(--r-sm);
  font-size: 14px;
  line-height: 1.7;
  display: none;
}
.form-status.is-success {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background: rgba(18, 200, 184, .1);
  border: 1px solid rgba(18, 200, 184, .45);
  color: #0B6F66;
}
.form-status.is-error {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background: #FFF7F7;
  border: 1px solid rgba(229, 72, 77, .4);
  color: #B02A2E;
}
.form-status svg { width: 18px; height: 18px; flex: none; margin-top: 3px; }

/* 招聘与合作 */
.career-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.career-card {
  padding: 26px 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-1);
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
}
.career-card:hover { transform: translateY(-5px); box-shadow: var(--sh-2); border-color: #CFE0FF; }
.career-card .ind-icon { width: 46px; height: 46px; margin-bottom: 16px; }
.career-card .ind-icon svg { width: 24px; height: 24px; }
.career-card h3 { font-size: 16px; margin-bottom: 8px; }
.career-card p { font-size: 13.5px; color: var(--muted); line-height: 1.8; margin: 0; }

/* 地图占位 */
.map-placeholder {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--sh-2);
  background: var(--grad-deep);
  min-height: 320px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 40px 24px;
}
.map-placeholder::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .06) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}
.map-placeholder-inner { position: relative; z-index: 2; color: #fff; max-width: 460px; }
.map-placeholder-inner svg { width: 44px; height: 44px; color: var(--cyan); margin-bottom: 16px; }
.map-placeholder-inner h3 { color: #fff; font-size: 18px; margin-bottom: 10px; }
.map-placeholder-inner p { color: rgba(255, 255, 255, .7); font-size: 14px; line-height: 1.85; margin: 0; }

/* 到访指引 */
.guide-list { counter-reset: guide; }
.guide-list li {
  position: relative;
  padding: 12px 0 12px 42px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
  border-bottom: 1px dashed var(--line-2);
}
.guide-list li:last-child { border-bottom: 0; }
.guide-list li::before {
  counter-increment: guide;
  content: counter(guide);
  position: absolute;
  left: 0; top: 13px;
  width: 26px; height: 26px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--grad-brand);
  color: #fff;
  font-size: 12.5px;
  font-weight: 700;
}

/* =========================================================================
   22 辅助组件
   ========================================================================= */
.to-top {
  position: fixed;
  right: 26px; bottom: 26px;
  z-index: 900;
  width: 46px; height: 46px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: var(--grad-brand);
  color: #fff;
  box-shadow: var(--sh-brand);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--t), transform var(--t), visibility var(--t);
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { transform: translateY(-3px); }
.to-top svg { width: 20px; height: 20px; }

/* 简易首页内链锚点滚动偏移（配合 scroll-padding-top） */

/* =========================================================================
   23 滚动渐显动画
   ========================================================================= */
.js-reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s cubic-bezier(.2, .6, .2, 1), transform .7s cubic-bezier(.2, .6, .2, 1);
  will-change: opacity, transform;
}
.js-reveal.is-visible { opacity: 1; transform: none; }

/* 无障碍：尊重减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .js-reveal { opacity: 1 !important; transform: none !important; }
}

/* =========================================================================
   24 响应式断点
   ========================================================================= */

/* —— 1200px —— */
@media (max-width: 1200px) {
  .container { padding: 0 22px; }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; gap: 32px; }
  .footer-grid .footer-contact { grid-column: 1 / -1; }
  .stack-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .career-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* —— 992px —— */
@media (max-width: 992px) {
  :root { --header-h: 66px; }

  .section { padding: 76px 0; }

  /* 移动端导航 */
  .nav-toggle { display: block; }
  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    background: rgba(7, 26, 51, .99);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-top: 1px solid rgba(255, 255, 255, .09);
    padding: 10px 18px 20px;
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--t), transform var(--t), visibility var(--t);
    box-shadow: 0 22px 40px rgba(0, 0, 0, .35);
  }
  .main-nav.is-open { opacity: 1; visibility: visible; transform: translateY(0); }
  .main-nav ul { flex-direction: column; align-items: stretch; gap: 2px; }
  .main-nav a { padding: 13px 16px; border-radius: var(--r-sm); font-size: 15.5px; }
  .header-cta { display: none; }
  .header-inner { gap: 12px; }

  .hero { padding: calc(var(--header-h) + 54px) 0 90px; }
  .hero-inner { grid-template-columns: 1fr; gap: 44px; }
  .hero-visual { order: -1; }
  .hero-visual svg { max-width: 380px; }
  .hero-desc { max-width: 100%; }

  .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat { border-bottom: 1px solid var(--line); }
  .stat:nth-child(2n) { border-right: 0; }
  .stat:nth-child(n + 3) { border-bottom: 0; }

  .grid--3, .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .why-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .culture-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cap-grid { grid-template-columns: 1fr; }
  .promise-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .process { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px 18px; }
  .process::before { display: none; }

  .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .svc-block-inner { grid-template-columns: 1fr; gap: 36px; }
  .svc-block.reverse .svc-block-media { order: 0; }
  .svc-visual { max-width: 520px; margin: 0 auto; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
}

/* —— 768px —— */
@media (max-width: 768px) {
  body { font-size: 15.5px; }
  .section { padding: 62px 0; }
  .section-head { margin-bottom: 40px; }

  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .culture-grid { grid-template-columns: 1fr; }
  .promise-grid { grid-template-columns: 1fr; }
  .cap-2col { grid-template-columns: 1fr; }
  .stack-grid { grid-template-columns: 1fr; }
  .career-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }

  .process { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .process-step { text-align: left; }
  .process-dot { margin: 0 0 14px; }

  .hero-actions .btn { flex: 1 1 auto; justify-content: center; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .cta-actions { width: 100%; }
  .cta-actions .btn { flex: 1 1 auto; justify-content: center; }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-grid .footer-contact { grid-column: 1 / -1; }

  .info-table tbody th { width: auto; display: block; border-bottom: 0; padding-bottom: 4px; }
  .info-table tbody td { display: block; padding-top: 4px; }
  .info-table tbody tr { display: block; border-bottom: 1px solid var(--line); padding: 6px 0; }
  .info-table tbody tr:last-child { border-bottom: 0; }

  .scene-card { flex: 1 1 100%; }
  .form-card { padding: 26px 20px; }
  .contact-card { padding: 24px 20px; }
  .to-top { right: 16px; bottom: 16px; }
}

/* —— 480px —— */
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .section { padding: 52px 0; }

  .stats-grid { grid-template-columns: 1fr; }
  .stat { border-right: 0; border-bottom: 1px solid var(--line); }
  .stat:nth-child(n + 3) { border-bottom: 1px solid var(--line); }
  .stat:last-child { border-bottom: 0; }

  .process { grid-template-columns: 1fr; }
  .hero-points { flex-direction: column; gap: 10px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .brand-text small { display: none; }
  .footer-grid { grid-template-columns: 1fr; }
  .brand-text strong { font-size: 15.5px; }
  .footer-bottom .container { flex-direction: column; align-items: flex-start; }
  .page-hero { padding: calc(var(--header-h) + 40px) 0 46px; }
  .sol-head { flex-direction: column; align-items: flex-start; gap: 12px; padding: 22px 20px 18px; }
  .sol-body { padding: 20px; }
}

/* =========================================================================
   25 组件补充样式
   ========================================================================= */

/* 行业卡片为链接元素，覆盖默认链接色，避免标题继承品牌蓝 */
.ind-card { color: var(--text); }
.ind-card:hover { color: var(--text); }
.ind-card h3 { color: var(--deep); }
.ind-card .link-arrow { color: var(--brand); }

/* 「为什么选择我们」中的联系引导卡片（深色强调） */
.why-card--cta {
  background: var(--grad-deep);
  border-color: transparent;
  box-shadow: var(--sh-2);
}
.why-card--cta h3 { color: #fff; }
.why-card--cta p { color: rgba(255, 255, 255, .72); }
.why-card--cta .why-num { background: rgba(255, 255, 255, .16); color: #fff; }
.why-card--cta .link-arrow { color: var(--cyan); }
.why-card--cta .link-arrow:hover { color: #fff; }

/* 解决方案页最后一张卡片跨双列，避免出现单张孤立卡片 */
.grid--2 .sol-card--wide { grid-column: 1 / -1; }

/* 数字滚动计数器：使用等宽数字避免滚动过程中宽度抖动 */
.counter { font-variant-numeric: tabular-nums; font-feature-settings: "tnum" 1; }

/* 首屏文案列：允许收缩，避免长文本撑破网格 */
.hero-copy { min-width: 0; }

/* 必填星号 */
.req { color: #E5484D; }

/* 表单隐私说明中的强调 */
.form-privacy .req { margin-left: 2px; }