/* ==========================================================================
   零壹零科技工作室 · 企业官网原型样式表
   技术栈：纯 CSS（无框架、无 CDN 依赖），零构建，改完刷新即生效
   配色：科技蓝白  |  适配：移动优先，PC 1200px 栅格
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. 设计变量（改配色只改这里，全站生效）
   -------------------------------------------------------------------------- */
:root {
  /* 主色 */
  --c-primary: #165DFF;          /* 主蓝 */
  --c-primary-d: #0E42D2;        /* 深蓝（hover / 渐变收尾） */
  --c-primary-l: #E8F0FF;        /* 浅蓝底 */
  --c-cyan: #0FC6C2;             /* 辅助青色（点缀） */

  /* 文字 */
  --c-ink: #0B1B33;              /* 标题深墨 */
  --c-text: #4E5969;             /* 正文 */
  --c-text-2: #86909C;           /* 次要说明 */

  /* 背景与描边 */
  --c-bg: #FFFFFF;
  --c-bg-soft: #F7F9FC;          /* 浅灰底区块 */
  --c-line: #E5E8EF;

  /* 圆角 / 阴影 */
  --radius: 12px;
  --radius-lg: 20px;
  --radius-sm: 8px;
  --shadow: 0 4px 16px rgba(15, 35, 95, 0.06);
  --shadow-lg: 0 16px 48px rgba(15, 35, 95, 0.12);

  /* 布局 */
  --maxw: 1200px;
  --header-h: 72px;

  /* 字体 */
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
}

/* --------------------------------------------------------------------------
   2. 基础重置
   -------------------------------------------------------------------------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-text);
  background: var(--c-bg);
  overflow-x: hidden;
}

img { max-width: 100%; display: block; border: 0; }
a { color: inherit; text-decoration: none; transition: color .2s; }
ul, ol { list-style: none; }
h1, h2, h3, h4 { color: var(--c-ink); line-height: 1.35; font-weight: 700; }
input, textarea, select, button { font-family: inherit; font-size: inherit; outline: none; }
button { cursor: pointer; border: 0; background: none; }

/* 通用容器 */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* 章节通用间距 */
.section { padding: 80px 0; }
.section--soft { background: var(--c-bg-soft); }
.section--tight { padding: 56px 0; }

/* 章节标题组 */
.sec-head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.sec-head .eyebrow {
  display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: 1px;
  color: var(--c-primary); background: var(--c-primary-l);
  padding: 5px 14px; border-radius: 999px; margin-bottom: 16px;
}
.sec-head h2 { font-size: 34px; letter-spacing: -.5px; margin-bottom: 14px; }
.sec-head p { color: var(--c-text-2); font-size: 15px; }
.sec-head--left { text-align: left; margin-left: 0; }

/* --------------------------------------------------------------------------
   3. 按钮
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 48px; padding: 0 26px; border-radius: 999px;
  font-size: 15px; font-weight: 600; white-space: nowrap;
  transition: all .22s ease;
}
.btn--primary {
  color: #fff;
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-d) 100%);
  box-shadow: 0 8px 22px rgba(22, 93, 255, .28);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(22, 93, 255, .36); }
.btn--ghost {
  color: var(--c-primary); background: #fff; border: 1.5px solid #C9DBFF;
}
.btn--ghost:hover { background: var(--c-primary-l); border-color: var(--c-primary); }
.btn--white { color: var(--c-primary); background: #fff; box-shadow: var(--shadow); }
.btn--white:hover { transform: translateY(-2px); }
.btn--sm { height: 40px; padding: 0 20px; font-size: 14px; }
.btn--block { width: 100%; }

/* --------------------------------------------------------------------------
   4. 顶部导航
   -------------------------------------------------------------------------- */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, .88);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s, box-shadow .25s;
}
.header.is-scrolled { border-bottom-color: var(--c-line); box-shadow: 0 2px 18px rgba(15, 35, 95, .06); }
.header .container { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px; }

/* Logo */
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-mark {
  width: 36px; height: 36px; border-radius: 9px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-cyan) 130%);
  color: #fff; font-weight: 800; font-size: 17px;
  display: flex; align-items: center; justify-content: center;
}
.logo-text { font-size: 18px; font-weight: 800; color: var(--c-ink); letter-spacing: -.3px; }
.logo-text span { color: var(--c-primary); }
.logo-sub { display: block; font-size: 10px; font-weight: 400; color: var(--c-text-2); letter-spacing: 1.5px; margin-top: -4px; }

/* 导航菜单 */
.nav { display: flex; align-items: center; gap: 2px; flex-shrink: 0; }
.nav a {
  position: relative; display: block; padding: 8px 14px;
  font-size: 15px; font-weight: 500; color: var(--c-ink); border-radius: 8px;
  white-space: nowrap; /* 中文字符禁止逐字换行，防止菜单被挤成竖排 */
}
.nav a:hover { color: var(--c-primary); background: var(--c-primary-l); }
.nav a.is-active { color: var(--c-primary); font-weight: 700; }
.nav a.is-active::after {
  content: ""; position: absolute; left: 50%; bottom: 0; transform: translateX(-50%);
  width: 18px; height: 3px; border-radius: 2px; background: var(--c-primary);
}

/* 头部右侧动作区（不放电话，联系入口 = 在线留言 + 公众号） */
.header-act { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }

/* 汉堡按钮（移动端） */
.burger { display: none; width: 44px; height: 44px; align-items: center; justify-content: center; border-radius: 10px; }
.burger span { display: block; width: 20px; height: 2px; background: var(--c-ink); border-radius: 2px; position: relative; transition: .25s; }
.burger span::before, .burger span::after {
  content: ""; position: absolute; left: 0; width: 20px; height: 2px; background: var(--c-ink); border-radius: 2px; transition: .25s;
}
.burger span::before { top: -6px; }
.burger span::after { top: 6px; }
.nav-open .burger span { background: transparent; }
.nav-open .burger span::before { top: 0; transform: rotate(45deg); }
.nav-open .burger span::after { top: 0; transform: rotate(-45deg); }

/* --------------------------------------------------------------------------
   5. 首页 Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative; padding: calc(var(--header-h) + 72px) 0 88px;
  background:
    radial-gradient(900px 420px at 78% 8%, #E3EDFF 0%, rgba(227, 237, 255, 0) 62%),
    radial-gradient(700px 380px at 8% 92%, #E6FBFB 0%, rgba(230, 251, 251, 0) 60%),
    linear-gradient(180deg, #FBFDFF 0%, #FFFFFF 100%);
  overflow: hidden;
}
.hero::after { /* 背景细网格 */
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image: linear-gradient(#EEF2F9 1px, transparent 1px), linear-gradient(90deg, #EEF2F9 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(760px 420px at 50% 0%, #000 0%, transparent 78%);
  mask-image: radial-gradient(760px 420px at 50% 0%, #000 0%, transparent 78%);
}
.hero .container { position: relative; z-index: 2; display: grid; grid-template-columns: 1.08fr .92fr; gap: 56px; align-items: center; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px; margin-bottom: 22px;
  padding: 6px 16px 6px 8px; border-radius: 999px;
  background: #fff; border: 1px solid #DCE7FF; box-shadow: var(--shadow);
  font-size: 13px; color: var(--c-text); font-weight: 500;
}
.hero-badge b { color: var(--c-primary); }
.hero-badge i {
  width: 8px; height: 8px; border-radius: 50%; background: var(--c-cyan); display: inline-block;
  box-shadow: 0 0 0 4px rgba(15, 198, 194, .18);
}

.hero h1 { font-size: 48px; line-height: 1.22; letter-spacing: -1.4px; margin-bottom: 20px; }
.hero h1 em { font-style: normal; color: var(--c-primary); }
.hero-lead { font-size: 17px; line-height: 1.85; color: var(--c-text); max-width: 560px; margin-bottom: 30px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 34px; }

/* Hero 数据条 */
.hero-stats { display: flex; flex-wrap: wrap; gap: 34px; padding-top: 26px; border-top: 1px dashed var(--c-line); }
.hero-stats b { display: block; font-size: 27px; font-weight: 800; color: var(--c-ink); letter-spacing: -.5px; }
.hero-stats b i { font-style: normal; color: var(--c-primary); font-size: 16px; font-weight: 700; }
.hero-stats span { font-size: 13px; color: var(--c-text-2); }

/* Hero 右侧：能力矩阵卡 */
.hero-panel {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg); padding: 22px; position: relative;
}
.hero-panel__title { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.hero-panel__title h4 { font-size: 15px; }
.hero-panel__title span { font-size: 12px; color: var(--c-text-2); }
.hp-list { display: grid; gap: 10px; }
.hp-item {
  display: flex; align-items: center; gap: 12px; padding: 13px 14px;
  background: var(--c-bg-soft); border-radius: var(--radius);
  border: 1px solid #EEF1F7;
}
.hp-item i {
  width: 34px; height: 34px; border-radius: 9px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 16px;
  background: var(--c-primary-l); color: var(--c-primary);
}
.hp-item strong { display: block; font-size: 14px; color: var(--c-ink); }
.hp-item small { font-size: 12px; color: var(--c-text-2); }
.hp-item .bar { margin-left: auto; width: 62px; height: 6px; border-radius: 4px; background: #E3E9F5; overflow: hidden; }
.hp-item .bar em { display: block; height: 100%; border-radius: 4px; background: linear-gradient(90deg, var(--c-primary), var(--c-cyan)); }

/* --------------------------------------------------------------------------
   6. 信任背书条（客户/行业 logo 墙）
   -------------------------------------------------------------------------- */
.trust { padding: 30px 0; border-top: 1px solid var(--c-line); border-bottom: 1px solid var(--c-line); background: #fff; }
.trust p { text-align: center; font-size: 13px; color: var(--c-text-2); margin-bottom: 18px; letter-spacing: .5px; }
.trust-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.trust-logo {
  height: 52px; border-radius: var(--radius-sm); background: var(--c-bg-soft);
  border: 1px dashed #D9E1F0; display: flex; align-items: center; justify-content: center;
  font-size: 12px; color: #A6B0C0; letter-spacing: .5px; text-align: center; padding: 0 6px;
}

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

.card {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  padding: 30px 26px; transition: all .25s ease; position: relative; overflow: hidden;
}
.card::before {
  content: ""; position: absolute; left: 0; top: 0; height: 3px; width: 0;
  background: linear-gradient(90deg, var(--c-primary), var(--c-cyan)); transition: width .3s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: #D6E3FF; }
.card:hover::before { width: 100%; }
.card__icon {
  width: 52px; height: 52px; border-radius: 14px; margin-bottom: 20px;
  display: flex; align-items: center; justify-content: center; font-size: 24px;
  background: linear-gradient(135deg, var(--c-primary-l), #EAFBFA);
  color: var(--c-primary);
}
.card h3 { font-size: 19px; margin-bottom: 12px; }
.card p { font-size: 14px; line-height: 1.85; color: var(--c-text); }
.card ul { margin-top: 16px; display: grid; gap: 8px; }
.card ul li { font-size: 13px; color: var(--c-text); padding-left: 20px; position: relative; }
.card ul li::before {
  content: ""; position: absolute; left: 0; top: 9px; width: 6px; height: 6px;
  border-radius: 50%; background: var(--c-primary); opacity: .55;
}
.card__link { display: inline-flex; align-items: center; gap: 5px; margin-top: 20px; font-size: 14px; font-weight: 600; color: var(--c-primary); }
.card__link:hover { gap: 10px; }

/* 编号卡（业务流程） */
.step {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  padding: 28px 22px; position: relative; transition: all .25s;
}
.step:hover { border-color: var(--c-primary); box-shadow: var(--shadow); }
.step b {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 11px; margin-bottom: 16px;
  background: var(--c-primary); color: #fff; font-size: 15px; font-weight: 800;
}
.step h4 { font-size: 16px; margin-bottom: 8px; }
.step p { font-size: 13px; color: var(--c-text-2); line-height: 1.8; }
/* 步骤间的连接箭头（PC 端显示） */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; position: relative; }
.steps .step::after {
  content: "→"; position: absolute; right: -14px; top: 34px;
  color: #C3CFE2; font-size: 16px; font-weight: 700;
}
.steps .step:last-child::after { content: none; }

/* --------------------------------------------------------------------------
   8. 解决方案（图标密集网格）
   -------------------------------------------------------------------------- */
.sol {
  display: flex; gap: 16px; padding: 24px 22px; background: #fff;
  border: 1px solid var(--c-line); border-radius: var(--radius); transition: all .25s;
}
.sol:hover { border-color: var(--c-primary); box-shadow: var(--shadow); transform: translateY(-3px); }
.sol i {
  width: 44px; height: 44px; border-radius: 12px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 20px;
  background: var(--c-primary-l); color: var(--c-primary);
}
.sol h4 { font-size: 16px; margin-bottom: 6px; }
.sol p { font-size: 13px; color: var(--c-text-2); line-height: 1.75; margin: 0; }

/* --------------------------------------------------------------------------
   9. 数据成绩条（深色底）
   -------------------------------------------------------------------------- */
.stats {
  background: linear-gradient(120deg, #0B1B33 0%, #123A8A 55%, #165DFF 120%);
  border-radius: var(--radius-lg); padding: 52px 40px; color: #fff;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; position: relative; overflow: hidden;
}
.stats::after {
  content: ""; position: absolute; right: -60px; top: -60px; width: 260px; height: 260px;
  border-radius: 50%; background: radial-gradient(circle, rgba(15, 198, 194, .35), transparent 70%);
}
.stats > div { position: relative; z-index: 2; text-align: center; }
.stats b { display: block; font-size: 40px; font-weight: 800; letter-spacing: -1px; line-height: 1.1; }
.stats b i { font-style: normal; font-size: 18px; font-weight: 700; color: var(--c-cyan); }
.stats span { font-size: 14px; opacity: .78; }

/* --------------------------------------------------------------------------
   10. 案例卡片
   -------------------------------------------------------------------------- */
.case {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  overflow: hidden; transition: all .25s; display: flex; flex-direction: column;
}
.case:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.case__cover { position: relative; }
.case__tag {
  position: absolute; left: 14px; top: 14px; z-index: 2;
  padding: 4px 12px; border-radius: 999px; font-size: 12px; font-weight: 600;
  background: rgba(255, 255, 255, .92); color: var(--c-primary);
  backdrop-filter: blur(6px);
}
.case__body { padding: 22px 22px 24px; flex: 1; display: flex; flex-direction: column; }
.case__body h3 { font-size: 17px; margin-bottom: 10px; }
.case__body p { font-size: 13.5px; color: var(--c-text); line-height: 1.8; flex: 1; }
.case__meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; padding-top: 16px; border-top: 1px dashed var(--c-line); }
.case__meta span { font-size: 12px; color: var(--c-primary); background: var(--c-primary-l); padding: 3px 10px; border-radius: 6px; }

/* 案例筛选 tab */
.tabs { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 36px; }
.tab {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  height: 40px; padding: 0 20px; border-radius: 999px; font-size: 14px; font-weight: 500;
  background: #fff; border: 1px solid var(--c-line); color: var(--c-text); transition: all .2s;
}
/* emoji 图标与中文的字形基线差异：单独成 flex 项并垂直居中，再微调 1px 兜底 */
.tab .ico { font-size: 15px; line-height: 1; transform: translateY(1px); }
.tab:hover { border-color: var(--c-primary); color: var(--c-primary); }
.tab.is-active { background: var(--c-primary); border-color: var(--c-primary); color: #fff; font-weight: 600; }

/* --------------------------------------------------------------------------
   11. 新闻列表
   -------------------------------------------------------------------------- */
.news-item {
  display: grid; grid-template-columns: 96px 1fr auto; gap: 24px; align-items: center;
  padding: 24px 26px; background: #fff; border: 1px solid var(--c-line);
  border-radius: var(--radius); transition: all .25s;
}
.news-item:hover { border-color: var(--c-primary); box-shadow: var(--shadow); transform: translateX(4px); }
.news-date {
  text-align: center; border-right: 1px solid var(--c-line); padding-right: 18px;
}
.news-date b { display: block; font-size: 26px; font-weight: 800; color: var(--c-primary); line-height: 1.2; }
.news-date span { font-size: 12px; color: var(--c-text-2); }
.news-body h3 { font-size: 17px; margin-bottom: 8px; }
.news-body p { font-size: 13.5px; color: var(--c-text-2); line-height: 1.75; }
.news-more { font-size: 14px; font-weight: 600; color: var(--c-primary); white-space: nowrap; }

/* 分页 */
.pager { display: flex; justify-content: center; gap: 8px; margin-top: 40px; }
.pager a, .pager span {
  min-width: 40px; height: 40px; padding: 0 12px; border-radius: 10px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 14px; color: var(--c-text); background: #fff; border: 1px solid var(--c-line);
}
.pager a:hover { border-color: var(--c-primary); color: var(--c-primary); }
.pager .is-active { background: var(--c-primary); border-color: var(--c-primary); color: #fff; font-weight: 700; }
.pager .is-disabled { color: #C9CFDA; }

/* --------------------------------------------------------------------------
   12. FAQ 折叠
   -------------------------------------------------------------------------- */
.faq { display: grid; gap: 12px; max-width: 860px; margin: 0 auto; }
.faq-item { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); overflow: hidden; }
.faq-item.is-open { border-color: var(--c-primary); box-shadow: var(--shadow); }
.faq-q {
  width: 100%; text-align: left; padding: 20px 56px 20px 22px; position: relative;
  font-size: 15.5px; font-weight: 600; color: var(--c-ink);
}
.faq-q::after {
  content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%);
  width: 26px; height: 26px; border-radius: 50%; background: var(--c-primary-l); color: var(--c-primary);
  display: flex; align-items: center; justify-content: center; font-size: 17px; font-weight: 700; transition: .25s;
}
.faq-item.is-open .faq-q::after { content: "−"; background: var(--c-primary); color: #fff; }
.faq-a { display: none; padding: 0 22px 22px; font-size: 14px; line-height: 1.85; color: var(--c-text); }
.faq-item.is-open .faq-a { display: block; }

/* --------------------------------------------------------------------------
   13. 表单
   -------------------------------------------------------------------------- */
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: 13.5px; font-weight: 600; color: var(--c-ink); }
.field label em { color: #F53F3F; font-style: normal; margin-left: 2px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 13px 15px; border-radius: var(--radius-sm);
  border: 1px solid var(--c-line); background: #fff; color: var(--c-ink);
  font-size: 14.5px; transition: border-color .2s, box-shadow .2s;
}
.field textarea { min-height: 122px; resize: vertical; line-height: 1.7; }
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(22, 93, 255, .12);
}
.field input::placeholder, .field textarea::placeholder { color: #B4BCC9; }
.form-tip { font-size: 12.5px; color: var(--c-text-2); margin-top: 4px; }

/* 蜜罐字段：必须存在于 DOM（服务端「缺失即判机器人」），但对人完全隐藏 */
.hp-field { position: absolute !important; left: -9999px !important; width: 1px !important; height: 1px !important; opacity: 0; pointer-events: none; }

/* 表单提交状态区（main.js 渲染：成功 / 失败文案、图形验证码） */
.form-status { margin-top: 12px; font-size: 13.5px; line-height: 1.6; border-radius: 8px; padding: 10px 14px; }
.form-status.is-ok    { background: #E8FFEA; color: #0A7B2B; border: 1px solid #B7EBBF; }
.form-status.is-err   { background: #FFEEE8; color: #B42318; border: 1px solid #F5C6BC; }
.form-status.is-captcha { background: #F7F8FA; border: 1px solid var(--c-line); }
.form-status.is-captcha .cap-row { display: flex; align-items: center; gap: 10px; margin-top: 8px; }
.form-status.is-captcha img { height: 44px; border-radius: 6px; border: 1px solid var(--c-line); cursor: pointer; }
.form-status.is-captcha input { flex: 1; height: 44px; padding: 0 12px; border: 1px solid var(--c-line); border-radius: 8px; font-size: 14.5px; }
.form-status.is-captcha .cap-refresh { font-size: 12.5px; color: var(--c-primary); cursor: pointer; white-space: nowrap; background: none; border: none; padding: 0; }

/* 表单卡片 */
.form-card {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  padding: 34px; box-shadow: var(--shadow-lg);
}
.form-card h3 { font-size: 20px; margin-bottom: 6px; }
.form-card > p { font-size: 13.5px; color: var(--c-text-2); margin-bottom: 26px; }

/* --------------------------------------------------------------------------
   14. 底部 CTA 区
   -------------------------------------------------------------------------- */
.cta-band {
  position: relative; overflow: hidden; border-radius: var(--radius-lg);
  background: linear-gradient(120deg, var(--c-primary) 0%, var(--c-primary-d) 100%);
  padding: 52px 48px; color: #fff;
  display: grid; grid-template-columns: 1.4fr auto; gap: 32px; align-items: center;
}
.cta-band::after {
  content: ""; position: absolute; right: -80px; bottom: -100px; width: 320px; height: 320px;
  border-radius: 50%; background: radial-gradient(circle, rgba(255, 255, 255, .18), transparent 70%);
}
.cta-band h2 { color: #fff; font-size: 30px; margin-bottom: 10px; letter-spacing: -.5px; }
.cta-band p { font-size: 15px; opacity: .88; }
.cta-band .cta-actions { display: flex; gap: 12px; flex-wrap: wrap; position: relative; z-index: 2; }

/* --------------------------------------------------------------------------
   15. 页脚
   -------------------------------------------------------------------------- */
.footer { background: #0B1B33; color: rgba(255, 255, 255, .68); padding: 60px 0 0; font-size: 13.5px; }
.footer-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 44px; }
.footer .logo-text { color: #fff; }
.footer .logo-sub { color: rgba(255, 255, 255, .45); }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 18px; }
.footer li { margin-bottom: 10px; }
.footer a:hover { color: #fff; }
.footer-desc { line-height: 1.9; margin: 18px 0; max-width: 320px; }
/* 微信公众号 */
.footer-qr { display: flex; gap: 14px; align-items: center; margin-top: 16px; }
.footer-qr .ph { width: 96px; height: 96px; flex-shrink: 0; }
.footer-qr strong { color: #fff; display: block; font-size: 13.5px; margin-bottom: 4px; }
.footer-qr small { color: rgba(255, 255, 255, .5); font-size: 12px; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1); padding: 22px 0;
  display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; font-size: 12.5px;
  color: rgba(255, 255, 255, .45);
}
.footer-bottom a:hover { color: #fff; }

/* --------------------------------------------------------------------------
   16. 右侧悬浮工具条 + 移动端底部 CTA
   -------------------------------------------------------------------------- */
.float-bar { position: fixed; right: 18px; bottom: 96px; z-index: 90; display: flex; flex-direction: column; gap: 10px; }
.float-btn {
  width: 52px; height: 52px; border-radius: 14px; background: #fff;
  border: 1px solid var(--c-line); box-shadow: var(--shadow);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 1px; font-size: 10px; color: var(--c-text); transition: all .22s;
}
.float-btn i { font-size: 18px; font-style: normal; line-height: 1; }
.float-btn:hover { background: var(--c-primary); border-color: var(--c-primary); color: #fff; transform: translateY(-2px); }
.float-btn--main { background: linear-gradient(135deg, var(--c-primary), var(--c-primary-d)); border-color: transparent; color: #fff; }
/* 微信二维码气泡 */
.float-qr {
  position: absolute; right: 66px; bottom: 0; width: 178px; padding: 12px;
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); text-align: center; display: none;
}
.float-btn:hover .float-qr { display: block; }
.float-qr .ph { height: 138px; margin-bottom: 8px; }
.float-qr p { font-size: 11.5px; color: var(--c-text-2); }

/* 移动端底部固定 CTA */
.mobile-cta {
  display: none; position: fixed; left: 0; right: 0; bottom: 0; z-index: 95;
  background: rgba(255, 255, 255, .96); backdrop-filter: blur(10px);
  border-top: 1px solid var(--c-line); padding: 10px 14px calc(10px + env(safe-area-inset-bottom));
  gap: 10px;
}
.mobile-cta a { flex: 1; height: 46px; border-radius: 999px; display: flex; align-items: center; justify-content: center; font-size: 15px; font-weight: 600; }
.mobile-cta .m-msg { background: var(--c-primary); color: #fff; }

/* --------------------------------------------------------------------------
   17. 内页通用（Banner / 面包屑 / 时间轴 / 联系卡）
   -------------------------------------------------------------------------- */
.page-banner {
  padding: calc(var(--header-h) + 64px) 0 64px;
  background:
    radial-gradient(700px 320px at 80% 10%, #E3EDFF 0%, rgba(227, 237, 255, 0) 65%),
    linear-gradient(180deg, #FBFDFF, #F4F7FD);
  border-bottom: 1px solid var(--c-line);
}
.page-banner h1 { font-size: 38px; letter-spacing: -1px; margin-bottom: 12px; }
.page-banner p { max-width: 640px; color: var(--c-text); font-size: 15.5px; }
.breadcrumb { display: flex; gap: 8px; font-size: 13px; color: var(--c-text-2); margin-bottom: 16px; }
.breadcrumb a:hover { color: var(--c-primary); }
.breadcrumb span { color: #C9CFDA; }

/* 时间轴 */
.timeline { position: relative; padding-left: 28px; }
.timeline::before { content: ""; position: absolute; left: 6px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(180deg, var(--c-primary), #D8E4FF); }
.tl-item { position: relative; padding-bottom: 34px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ""; position: absolute; left: -28px; top: 7px; width: 14px; height: 14px;
  border-radius: 50%; background: #fff; border: 3px solid var(--c-primary);
}
.tl-item b { display: inline-block; font-size: 15px; color: var(--c-primary); margin-bottom: 6px; }
.tl-item h4 { font-size: 16px; margin-bottom: 6px; }
.tl-item p { font-size: 13.5px; color: var(--c-text-2); line-height: 1.8; }

/* 联系信息卡 */
.contact-card {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  padding: 26px 24px; display: flex; gap: 16px; align-items: flex-start; transition: all .25s;
}
.contact-card:hover { border-color: var(--c-primary); box-shadow: var(--shadow); }
.contact-card i {
  width: 44px; height: 44px; border-radius: 12px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 20px;
  background: var(--c-primary-l); color: var(--c-primary);
}
.contact-card b { display: block; font-size: 13px; color: var(--c-text-2); font-weight: 500; margin-bottom: 4px; }
.contact-card strong { font-size: 17px; color: var(--c-ink); }
.contact-card small { display: block; font-size: 12.5px; color: var(--c-text-2); margin-top: 4px; }

/* 正文排版（内页段落） */
.prose h2 { font-size: 24px; margin: 34px 0 14px; }
.prose h3 { font-size: 18px; margin: 26px 0 10px; }
.prose p { margin-bottom: 16px; line-height: 1.9; }
.prose ul { margin: 0 0 18px; display: grid; gap: 10px; }
.prose ul li { position: relative; padding-left: 22px; line-height: 1.85; }
.prose ul li::before { content: ""; position: absolute; left: 0; top: 10px; width: 7px; height: 7px; border-radius: 2px; background: var(--c-primary); }

/* --------------------------------------------------------------------------
   18. 图片占位块（原型阶段使用，替换真实图片后删除对应 div 即可）
   -------------------------------------------------------------------------- */
.ph {
  position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 6px; height: 180px; border-radius: var(--radius);
  background:
    repeating-linear-gradient(45deg, #F3F6FB 0 12px, #EDF2FA 12px 24px);
  border: 1px dashed #CBD7EC; color: #93A0B5; text-align: center;
  font-size: 12px; letter-spacing: .5px; padding: 10px; overflow: hidden;
}
.ph::before { content: "🖼"; font-size: 22px; filter: grayscale(1) opacity(.6); }
.ph b { font-weight: 600; color: #7C8AA3; font-size: 12.5px; }
.ph small { font-size: 11px; color: #A2AEC2; }
.ph--h140 { height: 140px; }
.ph--h200 { height: 200px; }
.ph--h240 { height: 240px; }
.ph--3x2 { aspect-ratio: 3 / 2; height: auto; }   /* 产品/案例图 800×600 */
.ph--16x9 { aspect-ratio: 16 / 9; height: auto; }
.ph--4x3 { aspect-ratio: 4 / 3; height: auto; }

/* --------------------------------------------------------------------------
   19. 提示条（原型说明 / 合规提醒）
   -------------------------------------------------------------------------- */
.notice {
  display: flex; gap: 12px; align-items: flex-start; padding: 16px 18px;
  background: #FFF9E8; border: 1px solid #FFE7A8; border-radius: var(--radius);
  font-size: 13.5px; color: #8A6A17; line-height: 1.75;
}
.notice i { font-style: normal; font-size: 16px; }
.notice strong { color: #6B5106; }

/* --------------------------------------------------------------------------
   20. 滚动进场动画（由 main.js 添加 .in 类触发）
   -------------------------------------------------------------------------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* --------------------------------------------------------------------------
   21. 响应式断点
   -------------------------------------------------------------------------- */
@media (max-width: 1080px) {
  .hero .container { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 40px; }
  .hero-panel { max-width: 560px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .trust-grid { grid-template-columns: repeat(3, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .steps .step::after { content: none; }
}

@media (max-width: 960px) {
  .section { padding: 56px 0; }
  .sec-head h2 { font-size: 26px; }
  .sec-head { margin-bottom: 34px; }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); padding: 38px 24px; gap: 24px; }
  .stats b { font-size: 32px; }
  /* 3 格数据条落单时，最后一格跨满整行，避免右侧留白 */
  .stats > div:last-child:nth-child(odd) { grid-column: 1 / -1; }
  .cta-band { grid-template-columns: 1fr; padding: 36px 26px; text-align: left; }
  .cta-band h2 { font-size: 24px; }
  .form-grid { grid-template-columns: 1fr; }
  .page-banner h1 { font-size: 30px; }

  /* 移动端导航 */
  .burger { display: flex; }
  .nav {
    position: fixed; top: var(--header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--c-line);
    box-shadow: var(--shadow-lg); padding: 10px 14px 18px;
    transform: translateY(-12px); opacity: 0; pointer-events: none; transition: .25s;
    max-height: calc(100vh - var(--header-h)); overflow-y: auto;
  }
  .nav-open .nav { transform: none; opacity: 1; pointer-events: auto; }
  .nav a { padding: 14px 10px; border-radius: 10px; border-bottom: 1px solid #F1F4F9; }
  .nav a.is-active::after { display: none; }
  .nav a.is-active { background: var(--c-primary-l); }

  /* 移动端底部 CTA 出现，悬浮条上移 */
  .mobile-cta { display: flex; }
  .float-bar { right: 12px; bottom: 82px; }
  .float-btn { width: 46px; height: 46px; }
  .float-qr { right: 56px; }
  .footer { padding-bottom: 72px; }

  .news-item { grid-template-columns: 1fr; gap: 12px; }
  .news-date { display: flex; align-items: baseline; gap: 8px; border-right: 0; padding-right: 0; text-align: left; }
  .news-date b { font-size: 20px; }
  .news-more { text-align: right; }
}

@media (max-width: 640px) {
  body { font-size: 14.5px; }
  .hero { padding: calc(var(--header-h) + 44px) 0 56px; }
  .hero h1 { font-size: 31px; letter-spacing: -.7px; }
  .hero-lead { font-size: 15px; }
  .hero-cta { gap: 10px; }
  .hero-cta .btn { flex: 1; min-width: 140px; padding: 0 18px; }
  .hero-stats { gap: 22px 30px; }
  .hero-stats b { font-size: 23px; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .card { padding: 24px 20px; }
  .form-card { padding: 24px 20px; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  /* 移动端点击区域 ≥ 44px */
  .btn { height: 46px; }
  .tab { height: 44px; }
  .pager a, .pager span { min-width: 44px; height: 44px; }
  .faq-q { padding: 18px 52px 18px 18px; font-size: 15px; }
}

/* ==========================================================================
   二维码灯箱（点击任意公众号二维码放大查看，见 main.js 第 11 节）
   ========================================================================== */
img[data-qr] { cursor: zoom-in; }

.qr-lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 24px;
  background: rgba(10, 12, 16, .82);
  backdrop-filter: blur(4px);
  cursor: zoom-out;
  opacity: 0;
  transition: opacity .18s ease;
}
.qr-lightbox.is-open { opacity: 1; }
.qr-lightbox img {
  width: min(420px, 86vmin);
  height: auto;
  border-radius: 10px;
  background: #fff;
  padding: 10px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, .45);
  transform: scale(.92);
  transition: transform .18s ease;
}
.qr-lightbox.is-open img { transform: scale(1); }
.qr-lightbox figcaption {
  color: #fff;
  font-size: 14px;
  letter-spacing: .5px;
  opacity: .85;
}
@media (prefers-reduced-motion: reduce) {
  .qr-lightbox, .qr-lightbox img { transition: none; }
}