/* =========================================================================
   兆伸教育官网 - 全站主样式表 (商务深蓝风)
   主色:#165DFF   点缀:#36CFC9
   兼容:Chrome/Edge/Safari/Firefox 最新两个正式版本
   断点:≥1200 / 768~1199 / <768
   ========================================================================= */

/* ---------- 0. 字体声明 ---------- */
@font-face {
  font-family: "Source Han Sans SC";
  src: local("Source Han Sans SC"),
       local("Source Han Sans CN"),
       local("Noto Sans SC"),
       local("Noto Sans CJK SC"),
       local("PingFang SC"),
       local("Microsoft YaHei"),
       local("微软雅黑");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Source Han Sans SC";
  src: local("Source Han Sans SC Bold"),
       local("Source Han Sans CN Bold"),
       local("Noto Sans SC Bold"),
       local("PingFang SC Bold"),
       local("Microsoft YaHei Bold"),
       local("微软雅黑 Bold");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ---------- 1. CSS 变量与全局盒模型 ---------- */
:root{
  --c-primary: #165DFF;
  --c-primary-dark: #0E3FB8;
  --c-primary-light: #4C8CFF;
  --c-accent: #36CFC9;
  --c-accent-dark: #1FA9A4;
  --c-text: #1F2937;
  --c-text-2: #4B5563;
  --c-text-3: #6B7280;
  --c-bg: #FFFFFF;
  --c-bg-soft: #F5F8FF;
  --c-bg-grey: #F2F4F7;
  --c-line: #E5EAF3;
  --c-line-soft: #EFF2F7;
  --c-success: #16A34A;
  --c-warning: #F59E0B;
  --c-danger: #EF4444;
  --shadow-1: 0 1px 2px rgba(22,93,255,.06), 0 2px 6px rgba(22,93,255,.04);
  --shadow-2: 0 8px 24px rgba(22,93,255,.10);
  --shadow-3: 0 16px 48px rgba(22,93,255,.18);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --container: 1200px;
  --pad-x: 24px;
  --header-h: 72px;
  --transition: .25s cubic-bezier(.4,.2,.2,1);
}

*,*::before,*::after{ box-sizing: border-box; }
html{ -webkit-text-size-adjust: 100%; line-height: 1.6; }
body{
  margin: 0;
  padding: 0;
  font-family: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "微软雅黑", sans-serif;
  font-size: 16px;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  word-break: break-word;
}

/* ---------- 2. 通用元素 ---------- */
h1,h2,h3,h4,h5,h6{ font-weight: 700; color: var(--c-text); margin: 0; line-height: 1.3; }
h1{ font-size: clamp(28px, 3.6vw, 44px); }
h2{ font-size: clamp(24px, 2.6vw, 34px); }
h3{ font-size: clamp(20px, 1.8vw, 24px); }
h4{ font-size: 18px; }
p{ margin: 0 0 12px; color: var(--c-text-2); }
a{ color: var(--c-primary); text-decoration: none; transition: color var(--transition); }
a:hover{ color: var(--c-primary-dark); text-decoration: underline; }
img,svg{ max-width: 100%; height: auto; vertical-align: middle; display: inline-block; }
img{ background: var(--c-bg-soft); }
ul,ol{ margin: 0; padding: 0 0 0 22px; }
li{ margin: 4px 0; }
hr{ border: 0; border-top: 1px solid var(--c-line); margin: 28px 0; }
table{ width: 100%; border-collapse: collapse; margin: 16px 0; }
th,td{ padding: 12px 14px; border: 1px solid var(--c-line); text-align: left; }
th{ background: var(--c-bg-soft); color: var(--c-text); font-weight: 700; }
dt{ font-weight: 700; color: var(--c-text); margin-top: 14px; }
dd{ margin: 4px 0 12px 18px; color: var(--c-text-2); }

::selection{ background: var(--c-primary); color: #fff; }

/* ---------- 3. 通用布局工具 ---------- */
.container{ width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--pad-x); }
.section{ padding: 80px 0; }
.section-sm{ padding: 48px 0; }
.row{ display: flex; flex-wrap: wrap; gap: 24px; }
.grid{ display: grid; gap: 24px; }
.text-primary{ color: var(--c-primary); }
.text-accent{ color: var(--c-accent); }
.text-muted{ color: var(--c-text-3); }
.text-center{ text-align: center; }
.flex-center{ display: flex; align-items: center; justify-content: center; }
.mt-0{ margin-top: 0; } .mt-1{ margin-top: 12px; } .mt-2{ margin-top: 24px; } .mt-3{ margin-top: 36px; }
.mb-0{ margin-bottom: 0; } .mb-1{ margin-bottom: 12px; } .mb-2{ margin-bottom: 24px; }
.visually-hidden{ position: absolute; clip: rect(0 0 0 0); width: 1px; height: 1px; overflow: hidden; }
.skip-link{
  position: absolute; top: -40px; left: 0; background: var(--c-primary); color: #fff;
  padding: 8px 16px; z-index: 9999; border-radius: 0 0 6px 0;
}
.skip-link:focus{ top: 0; }

/* 排版:首段加粗、关键字加粗 */
.lead{ font-size: 17px; line-height: 1.8; color: var(--c-text-2); }
.lead strong{ color: var(--c-primary-dark); font-weight: 700; }
.text-nowrap-1, .text-nowrap-2, .text-nowrap-3{
  overflow: hidden; display: -webkit-box; -webkit-box-orient: vertical;
}
.text-nowrap-1{ -webkit-line-clamp: 1; }
.text-nowrap-2{ -webkit-line-clamp: 2; }
.text-nowrap-3{ -webkit-line-clamp: 3; }

/* ---------- 4. 按钮 ---------- */
.btn{
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 28px; border-radius: 999px; font-weight: 700;
  font-size: 15px; line-height: 1; border: 0; cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  text-decoration: none; min-height: 44px; white-space: nowrap;
}
.btn:hover{ transform: translateY(-1px); text-decoration: none; }
.btn-primary{ background: var(--c-primary); color: #fff; box-shadow: var(--shadow-2); }
.btn-primary:hover{ background: var(--c-primary-dark); color: #fff; }
.btn-accent{ background: var(--c-accent); color: #053D3A; }
.btn-accent:hover{ background: var(--c-accent-dark); color: #fff; }
.btn-outline{ background: transparent; color: var(--c-primary); border: 2px solid var(--c-primary); }
.btn-outline:hover{ background: var(--c-primary); color: #fff; }
.btn-ghost{ background: rgba(22,93,255,.08); color: var(--c-primary); }
.btn-ghost:hover{ background: rgba(22,93,255,.16); color: var(--c-primary-dark); }
.btn-lg{ padding: 18px 36px; font-size: 17px; min-height: 56px; }
.btn-sm{ padding: 10px 18px; font-size: 13px; min-height: 36px; }
.btn-block{ display: flex; width: 100%; }

/* ---------- 5. 头部导航 ---------- */
.site-header{
  position: sticky; top: 0; z-index: 200;
  background: rgba(255,255,255,.94); backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--c-line-soft);
}
.site-header .container{ display: flex; align-items: center; justify-content: space-between; height: var(--header-h); }
.brand{ display: flex; align-items: center; gap: 12px; text-decoration: none; color: inherit; }
.brand:hover{ text-decoration: none; color: inherit; }
.brand-logo{
  width: 42px; height: 42px; border-radius: 10px;
  background: var(--c-primary); color: #fff; display: inline-flex;
  align-items: center; justify-content: center; font-weight: 700; font-size: 18px; letter-spacing: -.5px;
}
.brand-name{ font-size: 18px; font-weight: 700; color: var(--c-text); }
.brand-tag{ font-size: 12px; color: var(--c-text-3); margin-left: 6px; }
.nav-main{ display: flex; gap: 4px; align-items: center; }
.nav-main a{
  display: inline-flex; align-items: center; padding: 10px 14px;
  color: var(--c-text); font-weight: 500; font-size: 15px; border-radius: var(--radius-sm);
}
.nav-main a:hover{ background: var(--c-bg-soft); color: var(--c-primary); text-decoration: none; }
.nav-main a.active{ background: rgba(22,93,255,.10); color: var(--c-primary); font-weight: 700; }
.nav-toggle{
  display: none; background: transparent; border: 0; padding: 8px; cursor: pointer;
  border-radius: var(--radius-sm);
}
.nav-toggle svg{ width: 26px; height: 26px; }
.header-cta{ display: flex; gap: 12px; align-items: center; }
.header-cta .hotline{ font-weight: 700; color: var(--c-primary); }

/* 移动端导航抽屉 */
.mobile-drawer{
  display: none; position: fixed; inset: var(--header-h) 0 0 0;
  background: rgba(255,255,255,.98); z-index: 199;
  padding: 16px var(--pad-x) 24px; overflow-y: auto;
  border-top: 1px solid var(--c-line-soft);
}
.mobile-drawer a{
  display: block; padding: 16px 8px; font-size: 17px; color: var(--c-text);
  border-bottom: 1px solid var(--c-line-soft);
}
.mobile-drawer a:hover{ color: var(--c-primary); text-decoration: none; }
.mobile-drawer.open{ display: block; }

/* ---------- 6. Hero 首屏 ---------- */
.hero{
  background: linear-gradient(135deg, #F5F8FF 0%, #E8EEFB 100%);
  position: relative; overflow: hidden;
}
.hero .container{
  display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: center;
  padding: 80px var(--pad-x);
}
.hero-eyebrow{
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(22,93,255,.08); color: var(--c-primary);
  padding: 6px 14px; border-radius: 999px; font-size: 13px; font-weight: 600; margin-bottom: 18px;
}
.hero-eyebrow::before{
  content: ""; display: inline-block; width: 8px; height: 8px;
  background: var(--c-accent); border-radius: 50%;
}
.hero h1{ margin-bottom: 18px; }
.hero h1 span{ color: var(--c-primary); }
.hero p.lead{ font-size: 18px; margin-bottom: 32px; max-width: 560px; }
.hero-cta{ display: flex; gap: 14px; flex-wrap: wrap; }
.hero-meta{ margin-top: 36px; display: flex; gap: 32px; flex-wrap: wrap; }
.hero-meta-item{ display: flex; flex-direction: column; gap: 4px; }
.hero-meta-num{ font-size: 28px; font-weight: 700; color: var(--c-primary); }
.hero-meta-label{ font-size: 13px; color: var(--c-text-3); }

.hero-visual{
  position: relative; aspect-ratio: 3703 / 2753;
  background: linear-gradient(160deg, #ffffff 0%, #F5F8FF 100%);
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius-lg); padding: 22px; color: var(--c-text); overflow: hidden;
  box-shadow: var(--shadow-3);
  display: flex; flex-direction: column; gap: 12px; margin: 0;
}
.hero-visual::after{
  content: ""; position: absolute; left: -40px; top: -40px; width: 160px; height: 160px;
  background: radial-gradient(circle, rgba(54,207,201,.16) 0%, transparent 70%);
  border-radius: 50%; pointer-events: none;
}
.hero-cert-img{
  flex: 1 1 auto; width: 100%; height: auto; min-height: 0;
  object-fit: contain; object-position: center;
  border-radius: var(--radius-sm);
  background: #fff;
  box-shadow: 0 2px 14px rgba(0,0,0,.08);
}
.hero-cert-cap{
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  padding-top: 8px; border-top: 1px dashed var(--c-line-soft);
  text-align: center; line-height: 1.5;
}
.hero-cert-cap-strong{
  font-size: 15px; font-weight: 700; color: var(--c-primary);
  letter-spacing: 0.5px;
}
.hero-cert-cap-meta{
  font-size: 13px; color: var(--c-text-2);
}

/* 子页面 hero 简约版 */
.subpage-hero{
  background: linear-gradient(135deg, #F5F8FF 0%, #E8EEFB 100%);
  padding: 56px 0 48px; border-bottom: 1px solid var(--c-line-soft);
}
.subpage-hero h1{ margin-bottom: 12px; }
.subpage-hero p{ font-size: 17px; color: var(--c-text-2); max-width: 720px; margin: 0; }

/* ---------- 7. 面包屑 ---------- */
.breadcrumb{ padding: 14px 0; font-size: 13px; color: var(--c-text-3); background: var(--c-bg-soft); border-bottom: 1px solid var(--c-line-soft); }
.breadcrumb .container{ display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.breadcrumb a{ color: var(--c-text-3); }
.breadcrumb a:hover{ color: var(--c-primary); text-decoration: none; }
.breadcrumb .sep{ color: var(--c-text-3); opacity: .5; }
.breadcrumb .current{ color: var(--c-text); font-weight: 500; }

/* ---------- 8. 卡片 / 数据板块 ---------- */
.card{
  background: #fff; border: 1px solid var(--c-line-soft); border-radius: var(--radius-md);
  padding: 28px; transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  height: 100%;
}
.card:hover{ transform: translateY(-4px); box-shadow: var(--shadow-2); border-color: rgba(22,93,255,.4); }
.card-icon{
  width: 56px; height: 56px; border-radius: 14px;
  background: rgba(22,93,255,.10); color: var(--c-primary);
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.card-icon svg{ width: 28px; height: 28px; }
.card h3{ font-size: 18px; margin-bottom: 10px; }
.card p{ color: var(--c-text-3); font-size: 15px; line-height: 1.7; }
.card .more{ display: inline-flex; align-items: center; gap: 4px; margin-top: 12px; font-size: 14px; font-weight: 600; color: var(--c-primary); }

.section-title{
  text-align: center; margin-bottom: 48px;
}
.section-title h2{ margin-bottom: 12px; }
.section-title .eyebrow{
  display: inline-block; color: var(--c-primary); font-size: 13px; font-weight: 700;
  letter-spacing: 2px; margin-bottom: 8px; text-transform: uppercase;
}
.section-title p{ color: var(--c-text-3); font-size: 16px; max-width: 720px; margin: 0 auto; }

.grid-3{ display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4{ display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.grid-2{ display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }

/* 三栏 特色 */
.feature-section{ background: var(--c-bg-soft); }

/* 大数字 / 数据 stat */
.stats-grid{ display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stat-card{
  text-align: center; padding: 28px 18px; background: #fff;
  border-radius: var(--radius-md); border: 1px solid var(--c-line-soft);
}
.stat-card .num{
  font-size: 40px; font-weight: 800; color: var(--c-primary);
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-accent) 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  line-height: 1.1;
}
.stat-card .label{ font-size: 14px; color: var(--c-text-3); margin-top: 6px; }

/* 产品/课程 大卡 */
.product-card{
  background: #fff; border-radius: var(--radius-md); border: 1px solid var(--c-line-soft);
  overflow: hidden; display: flex; flex-direction: column; transition: all var(--transition);
}
.product-card:hover{ transform: translateY(-6px); box-shadow: var(--shadow-3); }
.product-card .pic{ aspect-ratio: 16 / 10; width: 100%; object-fit: cover; }
.product-card .body{ padding: 26px 28px; flex: 1; display: flex; flex-direction: column; }
.product-card .badge{
  display: inline-block; padding: 4px 10px; border-radius: 999px; font-size: 12px; font-weight: 600;
  background: rgba(22,93,255,.10); color: var(--c-primary); margin-bottom: 12px; align-self: flex-start;
}
.product-card .badge--accent{ background: rgba(54,207,201,.15); color: var(--c-accent-dark); }
.product-card h3{ margin-bottom: 10px; font-size: 22px; }
.product-card .desc{ color: var(--c-text-3); font-size: 15px; line-height: 1.75; margin-bottom: 18px; flex: 1; }
.product-card .meta{ display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 18px; font-size: 13px; color: var(--c-text-3); }
.product-card .meta span::before{ content: ""; display: inline-block; width: 4px; height: 4px; border-radius: 50%; background: var(--c-primary); margin-right: 6px; vertical-align: middle; }

/* FAQ 折叠 */
.faq-item{
  background: #fff; border: 1px solid var(--c-line-soft); border-radius: var(--radius-md);
  margin-bottom: 12px; overflow: hidden; transition: all var(--transition);
}
.faq-question{
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 18px 22px; cursor: pointer; font-weight: 700; font-size: 16px; color: var(--c-text);
  background: transparent; border: 0; width: 100%; text-align: left;
}
.faq-question .icon{ transition: transform var(--transition); color: var(--c-primary); flex-shrink: 0; }
.faq-item.open .faq-question .icon{ transform: rotate(45deg); }
.faq-answer{ max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-item.open .faq-answer{ max-height: 360px; }
.faq-answer-inner{ padding: 0 22px 22px; color: var(--c-text-2); font-size: 15px; line-height: 1.85; }

/* 资质证书列表 */
.cert-grid{ display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.cert-card{
  background: #fff; border-radius: var(--radius-md); border: 1px solid var(--c-line-soft);
  overflow: hidden; display: flex; flex-direction: column;
}
.cert-card .pic{ aspect-ratio: 4 / 3; object-fit: contain; background: #FAFAFC; padding: 16px; width: 100%; }
.cert-card .body{ padding: 20px 22px; flex: 1; }
.cert-card .body h4{ font-size: 16px; margin-bottom: 6px; }
.cert-card .body p{ font-size: 13px; color: var(--c-text-3); margin: 0 0 4px; }
.cert-card .body .num{ font-size: 12px; color: var(--c-primary); font-weight: 600; word-break: break-all; }

/* 时间轴 */
.timeline{ position: relative; padding-left: 28px; margin-top: 32px; }
.timeline::before{ content: ""; position: absolute; left: 8px; top: 0; bottom: 0; width: 2px; background: var(--c-line); }
.timeline li{ position: relative; padding-bottom: 28px; }
.timeline li::before{
  content: ""; position: absolute; left: -28px; top: 4px; width: 18px; height: 18px;
  background: #fff; border: 4px solid var(--c-primary); border-radius: 50%; z-index: 1;
}
.timeline .year{
  display: inline-block; background: var(--c-primary); color: #fff;
  font-weight: 700; padding: 4px 12px; border-radius: 6px; margin-bottom: 8px; font-size: 13px;
}
.timeline p{ color: var(--c-text-2); font-size: 14px; margin: 0; }

/* CTA 行动号召 */
.cta-banner{
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
  color: #fff; border-radius: var(--radius-lg); padding: 48px 40px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap;
}
.cta-banner h3{ color: #fff; margin-bottom: 8px; font-size: 26px; }
.cta-banner p{ color: rgba(255,255,255,.85); margin: 0; font-size: 15px; max-width: 580px; }
.cta-banner .btn{ background: #fff; color: var(--c-primary); }
.cta-banner .btn:hover{ background: var(--c-accent); color: #053D3A; }

/* ---------- 9. 关于我们 / 时间轴 / 价值观 ---------- */
.values-grid{ display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.value-card{
  background: #fff; border: 1px solid var(--c-line-soft); border-radius: var(--radius-md);
  padding: 24px 18px; text-align: center; transition: all var(--transition);
}
.value-card:hover{ transform: translateY(-4px); border-color: var(--c-primary); box-shadow: var(--shadow-2); }
.value-card .icon{
  width: 52px; height: 52px; margin: 0 auto 14px; border-radius: 50%;
  background: rgba(22,93,255,.10); color: var(--c-primary);
  display: inline-flex; align-items: center; justify-content: center;
}
.value-card h4{ font-size: 16px; margin-bottom: 8px; }
.value-card p{ font-size: 13px; color: var(--c-text-3); margin: 0; line-height: 1.7; }

/* 创始人卡 */
.founder-card{
  display: grid; grid-template-columns: 280px 1fr; gap: 32px; align-items: center;
  background: #fff; border-radius: var(--radius-md); padding: 32px;
  border: 1px solid var(--c-line-soft);
}
.founder-card .pic{ aspect-ratio: 4 / 5; object-fit: cover; border-radius: var(--radius-md); width: 100%; }
.founder-card h3{ font-size: 22px; margin-bottom: 6px; }
.founder-card .role{ color: var(--c-primary); font-weight: 600; font-size: 14px; margin-bottom: 16px; }
.founder-card p{ font-size: 15px; line-height: 1.8; color: var(--c-text-2); }

/* ---------- 10. 表单 & 弹窗 ---------- */
.modal-overlay{
  position: fixed; inset: 0; background: rgba(11,17,40,.6); backdrop-filter: blur(4px);
  display: none; align-items: center; justify-content: center; z-index: 300; padding: 16px;
}
.modal-overlay.open{ display: flex; }
.modal{
  background: #fff; border-radius: var(--radius-lg); padding: 36px;
  width: 100%; max-width: 460px; max-height: 90vh; overflow-y: auto; position: relative;
}
.modal-close{
  position: absolute; top: 14px; right: 14px; background: transparent; border: 0;
  width: 36px; height: 36px; cursor: pointer; border-radius: 50%;
  color: var(--c-text-3); display: inline-flex; align-items: center; justify-content: center;
}
.modal-close:hover{ background: var(--c-bg-soft); color: var(--c-text); }
.modal h3{ font-size: 22px; margin-bottom: 8px; }
.modal p{ color: var(--c-text-3); font-size: 14px; margin-bottom: 22px; }
.modal-form .field{ margin-bottom: 14px; }
.modal-form label{ display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--c-text-2); }
.modal-form input, .modal-form select, .modal-form textarea{
  width: 100%; padding: 12px 14px; border: 1px solid var(--c-line); border-radius: 8px;
  font-size: 15px; font-family: inherit; outline: none; transition: border-color var(--transition);
}
.modal-form input:focus, .modal-form select:focus, .modal-form textarea:focus{ border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(22,93,255,.15); }
.modal-form textarea{ resize: vertical; min-height: 90px; }
.modal-form .submit{ width: 100%; margin-top: 8px; }
.modal-note{ font-size: 12px; color: var(--c-text-3); text-align: center; margin-top: 14px; }

/* 悬浮按钮 */
.fab{
  position: fixed; right: 22px; bottom: 22px; z-index: 220;
  display: flex; flex-direction: column; gap: 12px;
}
.fab a, .fab button{
  width: 56px; height: 56px; border-radius: 50%; background: var(--c-primary); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  border: 0; cursor: pointer; box-shadow: var(--shadow-2);
  transition: transform var(--transition);
}
.fab a:hover, .fab button:hover{ transform: scale(1.08); }
.fab .icon-back{ background: var(--c-text); }
.fab svg{ width: 24px; height: 24px; }

.fab-mobile{
  display: none; position: fixed; left: 0; right: 0; bottom: 0; z-index: 220;
  background: var(--c-primary); color: #fff; padding: 14px var(--pad-x);
  text-align: center; font-weight: 700; box-shadow: 0 -4px 18px rgba(0,0,0,.14);
}
.fab-mobile a{ color: #fff; display: block; }

/* ---------- 腾讯问卷浮窗 ---------- */
#idy_floatdiv{ z-index: 230; box-shadow: 0 4px 16px rgba(0,0,0,.18); }
#idy_floatdiv a{ font-weight: 600; letter-spacing: 1px; }
@media (max-width: 767px){
  /* 移动端避让底部「1对1免费咨询」条(高 64px) */
  #idy_floatdiv{ bottom: 76px !important; }
}

/* ---------- 11. 内容文章 ---------- */
.article{ max-width: 920px; margin: 0 auto; }
.article h2{ font-size: 26px; margin: 36px 0 14px; padding-top: 16px; border-top: 1px solid var(--c-line-soft); }
.article h3{ font-size: 20px; margin: 28px 0 10px; }
.article p{ font-size: 16px; line-height: 1.9; color: var(--c-text); margin: 0 0 14px; }
.article ul, .article ol{ padding-left: 22px; margin: 0 0 18px; }
.article li{ margin: 8px 0; line-height: 1.8; color: var(--c-text); }
.article blockquote{
  border-left: 4px solid var(--c-primary); padding: 14px 18px;
  background: var(--c-bg-soft); border-radius: 0 8px 8px 0; color: var(--c-text-2);
  font-style: normal; margin: 16px 0;
}
.article figure{ margin: 24px 0; }
.article figcaption{
  text-align: center; font-size: 13px; color: var(--c-text-3); padding-top: 8px;
}
.article .meta-bar{
  display: flex; gap: 16px; flex-wrap: wrap; font-size: 13px; color: var(--c-text-3);
  padding: 16px 0; border-top: 1px solid var(--c-line-soft); border-bottom: 1px solid var(--c-line-soft);
  margin-bottom: 24px;
}
.article .meta-bar strong{ color: var(--c-text); font-weight: 600; margin-right: 4px; }
.article .update-log{
  margin-top: 36px; padding: 18px 22px; background: var(--c-bg-soft);
  border-radius: var(--radius-md); font-size: 13px; color: var(--c-text-3); line-height: 1.8;
}
.article .update-log h4{ color: var(--c-text); font-size: 14px; margin-bottom: 8px; }
.article .update-log ul{ padding-left: 18px; }

/* 信息标签 */
.tag{ display: inline-block; padding: 3px 9px; border-radius: 4px; font-size: 12px; background: var(--c-bg-soft); color: var(--c-text-3); margin: 2px; }

/* ---------- 12. 联系我们 ---------- */
.contact-grid{ display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.contact-card{
  display: flex; gap: 18px; align-items: flex-start;
  padding: 24px; background: #fff; border: 1px solid var(--c-line-soft); border-radius: var(--radius-md);
}
.contact-card .icon{
  width: 48px; height: 48px; border-radius: 12px; flex-shrink: 0;
  background: rgba(22,93,255,.10); color: var(--c-primary);
  display: inline-flex; align-items: center; justify-content: center;
}
.contact-card .icon svg{ width: 22px; height: 22px; }
.contact-card h4{ font-size: 16px; margin-bottom: 4px; }
.contact-card p{ font-size: 14px; color: var(--c-text-3); margin: 0; }
.contact-card .hotline-no{ font-size: 22px; font-weight: 700; color: var(--c-primary); }

/* ---------- 13. 底部站脚 ---------- */
.site-footer{
  background: #0B1437; color: #C7D0E8; padding: 56px 0 0;
}
.footer-grid{ display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 36px; }
.site-footer h5{ color: #fff; font-size: 15px; margin-bottom: 18px; }
.site-footer a{ color: #C7D0E8; display: inline-block; padding: 6px 0; font-size: 14px; }
.site-footer a:hover{ color: var(--c-accent); text-decoration: none; }
.site-footer .footer-addr{ color: #C7D0E8; font-size: 13px; line-height: 1.7; padding: 4px 0; word-break: break-all; }
.site-footer .footer-addr .lbl{
  display: inline-block; font-size: 12px; color: #fff;
  background: rgba(54,207,201,.18); padding: 2px 8px; border-radius: 4px;
  margin-right: 6px; font-weight: 600; vertical-align: 1px;
}
.footer-brand p{ color: #94A2C0; font-size: 14px; line-height: 1.8; margin: 12px 0 18px; }
.footer-brand .meta-line{
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  margin-top: 16px; font-size: 12px; color: #8898B8;
}
.footer-bottom{
  margin-top: 48px; padding: 22px 0; border-top: 1px solid rgba(255,255,255,.06);
  font-size: 12px; color: #8898B8; display: flex; flex-wrap: wrap; gap: 16px;
  justify-content: space-between; align-items: center;
}
.footer-cert{ display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.footer-cert .gov{ color: #C7D0E8; }
.footer-cert .gov a{ color: var(--c-accent); font-weight: 600; }

/* ---------- 14. 响应式断点 ---------- */
@media (max-width: 1199px){
  .nav-main a{ padding: 8px 10px; font-size: 14px; }
  .grid-4{ grid-template-columns: repeat(2, 1fr); }
  .values-grid{ grid-template-columns: repeat(3, 1fr); }
  .stats-grid{ grid-template-columns: repeat(2, 1fr); }
  .footer-grid{ grid-template-columns: repeat(2, 1fr); }
  .hero .container{ grid-template-columns: 1fr 1fr; gap: 32px; padding: 56px var(--pad-x); }
  .section{ padding: 60px 0; }
}
@media (max-width: 900px){
  .hero .container{ grid-template-columns: 1fr; }
  .hero-visual{ aspect-ratio: 16 / 10; }
  .founder-card{ grid-template-columns: 1fr; }
  .founder-card .pic{ max-width: 320px; margin: 0 auto; }
  .cert-grid{ grid-template-columns: 1fr 1fr; }
  .contact-grid{ grid-template-columns: 1fr; }
}
@media (max-width: 767px){
  :root{ --pad-x: 16px; --header-h: 60px; }
  body{ font-size: 15px; }
  h1{ font-size: 26px; }
  h2{ font-size: 22px; }
  .nav-main, .header-cta{ display: none; }
  .nav-toggle{ display: inline-flex; }
  .header-cta-mobile{ display: block; }
  .hero .container{ padding: 36px var(--pad-x); gap: 24px; }
  .hero h1{ font-size: 26px; }
  .hero p.lead{ font-size: 15px; }
  .hero-cta{ flex-direction: column; align-items: stretch; }
  .hero-cta .btn{ width: 100%; }
  .hero-meta{ gap: 18px; }
  .hero-meta-num{ font-size: 22px; }
  .section{ padding: 48px 0; }
  .section-title{ margin-bottom: 32px; }
  .section-title h2{ font-size: 22px; }
  .grid-2, .grid-3, .grid-4, .values-grid, .cert-grid{ grid-template-columns: 1fr; }
  .stats-grid{ grid-template-columns: 1fr 1fr; }
  .footer-grid{ grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom{ flex-direction: column; text-align: center; }
  .article h2{ font-size: 20px; }
  .cta-banner{ padding: 28px 18px; }
  .cta-banner .btn{ width: 100%; }
  .fab{ display: none; }
  .fab-mobile{ display: block; }
  body{ padding-bottom: 64px; }
  /* 移动端 subpage-hero 紧凑 */
  .subpage-hero{ padding: 36px 0 28px; }
  /* 移动端 timeline 紧凑 */
  .timeline{ padding-left: 22px; }
  /* 移动端 product card 紧凑 */
  .product-card .body{ padding: 20px 18px; }
}

/* 兼容微信 X5 内核 - 调整 input 字号避免自动放大 */
@media (max-width: 767px){
  .modal-form input, .modal-form textarea, .modal-form select{ font-size: 16px; }
}

/* ---------- 13.9 咨询表单嵌入位 & 兜底卡 ---------- */
.consult-card{ background:#fff;padding:32px;border-radius:var(--radius-md);border:1px solid var(--c-line-soft);box-shadow:var(--shadow-1); }
.form-embed{ position:relative; }
.consult-frame{ border-radius:var(--radius-sm);background:#fff; }
.form-fallback{ text-align:center;padding:36px 20px; }
.form-fallback-icon{ font-size:46px;line-height:1;margin-bottom:14px; }
.form-fallback h3{ font-size:20px;margin:0 0 10px;color:var(--c-text); }
.form-fallback p{ color:var(--c-text-2);font-size:15px;line-height:1.7;margin:0 auto 22px;max-width:460px; }
.form-fallback-actions{ display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:16px; }
.form-fallback-actions .btn{ min-width:180px; }

/* ---------- 13.10 腾讯问卷咨询 CTA 卡 ---------- */
.wenjuan-card{ text-align:center; padding:40px 28px; }
.wenjuan-card-icon{
  width:68px;height:68px;border-radius:50%;margin:0 auto 18px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(54,207,201,.14);color:var(--c-accent-dark);
}
.wenjuan-card h3{ font-size:22px;margin:0 0 12px;color:var(--c-text); }
.wenjuan-card p{ color:var(--c-text-2);font-size:15px;line-height:1.8;margin:0 auto 24px;max-width:480px; }
.wenjuan-btn{ font-size:17px;font-weight:700;padding:14px 30px;min-width:280px; }
.wenjuan-alt{ display:flex;align-items:center;gap:12px;justify-content:center;flex-wrap:wrap;margin:22px 0 14px; }
.wenjuan-alt-sep{ color:var(--c-text-2);font-size:14px; }

.reveal{ opacity: 0; transform: translateY(20px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in-view{ opacity: 1; transform: translateY(0); }

/* ---------- 15. 打印样式 ---------- */
@media print{
  .site-header, .site-footer, .fab, .fab-mobile, .nav-toggle{ display: none; }
  .section{ padding: 12px 0; }
  body{ color: #000; background: #fff; }
}