/* ==========================================================================
   珠海翊童信息科技有限公司 — 站点样式系统 v2
   设计令牌：科技蓝主色 / 活力橙 CTA / 清新绿成功态
   纯手写 CSS，零外部依赖
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. 设计令牌
   -------------------------------------------------------------------------- */
:root{
  --brand:#2563EB; --brand-dark:#1D4ED8; --brand-soft:#EFF6FF;
  --accent:#F97316;        /* 活力橙：悬浮按钮、主 CTA 强调 */
  --success:#10B981;       /* 清新绿：成功态 */
  --bg:#FFFFFF; --bg-soft:#F9FAFB;
  --line:#E5E7EB; --ink:#111827; --ink-2:#374151; --muted:#6B7280;
  --radius:16px; --max:1180px;
  --font:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;

  /* 派生令牌 */
  --brand-ink:#0D1424;
  --brand-050:#F5F8FF;
  --accent-soft:#FFF3E8;
  --success-soft:#E7F8F1;
  --danger:#DC2626;
  --radius-sm:10px;
  --radius-lg:26px;
  --shadow-sm:0 2px 8px rgba(17,24,39,.05);
  --shadow:0 10px 30px rgba(17,24,39,.08);
  --shadow-lg:0 24px 60px rgba(17,24,39,.14);
  --shadow-brand:0 10px 26px rgba(37,99,235,.28);
  --ease:.25s ease;
}

/* --------------------------------------------------------------------------
   2. Reset 与基础
   -------------------------------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4,h5{margin:0;font-weight:800;line-height:1.25;letter-spacing:-.01em;color:var(--ink)}
h1{font-size:clamp(30px,4.4vw,52px)}
h2{font-size:clamp(24px,3.2vw,36px)}
h3{font-size:19px}
h4{font-size:16px}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer}
ul li{list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* --------------------------------------------------------------------------
   3. 布局容器与区块
   -------------------------------------------------------------------------- */
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section.soft{background:var(--bg-soft)}
.section.tight{padding:56px 0}
.section.dark{background:var(--brand-ink);color:#fff}
.section.dark h2,.section.dark h3{color:#fff}

/* 排版辅助 */
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;
  color:var(--brand);text-transform:uppercase;margin-bottom:14px;
}
.h2{font-size:clamp(26px,3.4vw,40px);font-weight:800}
.lead{color:var(--muted);font-size:17px;max-width:760px;margin-top:14px;line-height:1.8}
.center{text-align:center}
.center .lead{margin-left:auto;margin-right:auto}
.sec-head{margin-bottom:48px}
.sec-head.center .lead{margin-left:auto;margin-right:auto}
.sec-head.left{margin-bottom:36px}
.muted{color:var(--muted)}
.nowrap{white-space:nowrap}

/* 工具类 */
.grid{display:grid;gap:26px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.row3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.mt-1{margin-top:8px}
.mt-2{margin-top:16px}
.mt-3{margin-top:24px}
.mt-4{margin-top:32px}
.mt-5{margin-top:40px}
.mb-2{margin-bottom:16px}
.mb-3{margin-bottom:24px}
.text-center{text-align:center}

/* --------------------------------------------------------------------------
   4. 按钮
   -------------------------------------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:12px;border:1px solid transparent;
  font-weight:700;font-size:15px;line-height:1.4;text-align:center;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-brand)}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 32px rgba(37,99,235,.36)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 10px 26px rgba(249,115,22,.3)}
.btn-accent:hover{background:#EA580C;color:#fff;transform:translateY(-2px);box-shadow:0 14px 32px rgba(249,115,22,.38)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow)}
.btn-lg{padding:14px 28px;font-size:16px;border-radius:14px}
.btn-sm{padding:8px 15px;font-size:14px;border-radius:10px}
.btn-block{display:flex;width:100%}
.btn[disabled],.btn.is-disabled{opacity:.55;pointer-events:none}
.link-more{display:inline-block;margin-top:18px;color:var(--brand);font-weight:700;font-size:14px}
.link-more:hover{color:var(--brand-dark)}

/* --------------------------------------------------------------------------
   5. 页头 / 导航
   -------------------------------------------------------------------------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.9);backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease),background var(--ease);
}
.site-header.scrolled,
body.scrolled .site-header{box-shadow:0 6px 24px rgba(17,24,39,.08);background:rgba(255,255,255,.96)}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px;gap:16px;position:relative}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:19px;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand .mark{
  width:38px;height:38px;flex:none;border-radius:11px;
  background:linear-gradient(135deg,var(--brand),#4F8BFF);
  display:grid;place-items:center;color:#fff;font-weight:800;font-size:18px;
  box-shadow:0 6px 16px rgba(37,99,235,.32);
}
.brand small{display:block;font-weight:500;font-size:11px;color:var(--muted);letter-spacing:.05em;line-height:1.5}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{
  padding:9px 14px;border-radius:10px;font-size:15px;color:var(--ink-2);font-weight:500;
  transition:background var(--ease),color var(--ease);
}
.nav-links a:hover{background:var(--brand-soft);color:var(--brand)}
.nav-links a.active{color:var(--brand);background:var(--brand-soft);font-weight:700}
.nav-links .btn{margin-left:8px}
.nav-toggle{
  display:none;background:none;border:0;padding:8px;font-size:22px;line-height:1;
  color:var(--ink);border-radius:8px;
}
.nav-toggle:hover{background:var(--bg-soft)}

/* --------------------------------------------------------------------------
   6. 页脚
   -------------------------------------------------------------------------- */
.site-footer{background:#0D1424;color:#c7cede;padding:64px 0 28px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.foot-grid h4,.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px}
.foot-grid li,.site-footer li,.site-footer p{font-size:14px;color:#9aa4bb;margin-bottom:9px;line-height:1.7}
.site-footer .brand{color:#fff}
.site-footer .brand:hover{color:#fff}
.site-footer .brand small{color:#8b95ad}
.foot-col a{display:inline-block;color:#9aa4bb}
.foot-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.foot-social{display:flex;gap:10px;margin-top:18px}
.foot-social a{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:rgba(255,255,255,.08);color:#c7cede;font-size:15px;transition:var(--ease);
}
.foot-social a:hover{background:var(--brand);color:#fff;transform:translateY(-2px)}
.foot-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:#7c869e;
}
.foot-bottom a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}

/* --------------------------------------------------------------------------
   7. 首屏 Hero
   -------------------------------------------------------------------------- */
.hero{
  position:relative;padding:96px 0 88px;
  background:
    radial-gradient(900px 420px at 88% -8%,rgba(37,99,235,.16) 0%,rgba(37,99,235,0) 62%),
    radial-gradient(700px 360px at 4% 0%,rgba(249,115,22,.10) 0%,rgba(249,115,22,0) 60%),
    linear-gradient(180deg,#FFFFFF 0%,#F9FAFB 100%);
  overflow:hidden;
}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(32px,4.6vw,54px);font-weight:800;letter-spacing:-.02em}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero .eyebrow{
  background:var(--brand-soft);color:var(--brand-dark);
  padding:6px 14px;border-radius:99px;letter-spacing:.06em;
}
.hero-desc{margin-top:20px;font-size:18px;color:var(--muted);max-width:580px}
.hero-actions{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{margin-top:52px;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.hero-stats b,.hero-stats .stat-num{
  display:block;font-size:30px;font-weight:800;color:var(--brand);line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.hero-stats span,.hero-stats .stat-label{display:block;font-size:14px;color:var(--muted)}
.hero-visual{
  position:relative;border-radius:var(--radius-lg);padding:26px;color:#fff;
  background:linear-gradient(150deg,#0B1B3D 0%,#1D4ED8 58%,#4F8BFF 100%);
  box-shadow:var(--shadow-lg);
}
.hero-visual::after{
  content:"";position:absolute;inset:0;border-radius:var(--radius-lg);pointer-events:none;
  background:radial-gradient(420px 220px at 80% 0%,rgba(255,255,255,.18),transparent 70%);
}
.hero-visual h3{position:relative;color:#fff;font-size:18px;margin-bottom:16px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.hero-visual h3 span{
  font-size:12px;font-weight:600;background:rgba(255,255,255,.2);
  padding:3px 10px;border-radius:99px;
}
.hero-card{
  position:relative;background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.22);border-radius:var(--radius);
  padding:16px;margin-bottom:14px;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  transition:transform var(--ease),background var(--ease);
}
.hero-card:last-child{margin-bottom:0}
.hero-card:hover{transform:translateY(-3px);background:rgba(255,255,255,.17)}
.hero-card h4{color:#fff;font-size:15px;margin-bottom:8px;display:flex;justify-content:space-between;align-items:center;gap:10px}
.hero-card h4 span{font-size:12px;font-weight:700;background:rgba(255,255,255,.22);padding:3px 10px;border-radius:99px}
.hero-card p{font-size:13px;color:rgba(255,255,255,.8)}
.bar{height:8px;border-radius:99px;background:rgba(255,255,255,.22);margin-top:10px;overflow:hidden}
.bar i,.bar span{
  display:block;height:100%;border-radius:99px;
  background:linear-gradient(90deg,#fff,rgba(255,255,255,.75));
  width:0;transition:width 1.2s cubic-bezier(.22,.61,.36,1);
}

/* --------------------------------------------------------------------------
   8. 数据成果（数字滚动）
   -------------------------------------------------------------------------- */
.stats-band{
  background:linear-gradient(135deg,#0D1424 0%,#1B2A55 100%);
  color:#fff;padding:56px 0;
}
.stats-band.soft{background:var(--bg-soft);color:var(--ink)}
.stats-band .stat-item b{color:#fff}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-item{text-align:center;padding:8px 12px}
.stat-num{
  display:block;font-size:clamp(34px,4vw,50px);font-weight:800;line-height:1.15;
  color:var(--brand);font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.stats-band .stat-num{color:#fff}
.stat-num .suffix{font-size:.62em;margin-left:2px}
.stat-label{display:block;margin-top:6px;font-size:14px;color:var(--muted)}
.stats-band .stat-label{color:#9aa4bb}

/* --------------------------------------------------------------------------
   9. 卡片通用
   -------------------------------------------------------------------------- */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:#BFD4FF}
.card h3{font-size:19px;margin-bottom:10px}
.card h4{font-size:16px;margin-bottom:8px}
.card p{color:var(--muted);font-size:15px}
.card ul{margin-top:16px;display:grid;gap:8px}
.card ul li{font-size:14px;color:var(--ink-2);padding-left:20px;position:relative}
.card ul li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;
  border-radius:2px;background:var(--brand);opacity:.6;
}
.ico{
  width:52px;height:52px;border-radius:14px;background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:24px;margin-bottom:18px;
}
.ico.sm{width:40px;height:40px;border-radius:11px;font-size:18px;margin-bottom:12px}
.ico.accent{background:var(--accent-soft);color:var(--accent)}
.ico.success{background:var(--success-soft);color:var(--success)}

/* --------------------------------------------------------------------------
   10. 客户评价轮播
   -------------------------------------------------------------------------- */
.testimonials{position:relative;max-width:840px;margin:0 auto}
.carousel{position:relative;overflow:hidden;border-radius:var(--radius-lg)}
.carousel-track{
  display:flex;transition:transform .55s cubic-bezier(.4,.14,.3,1);
}
.carousel-slide{min-width:100%;flex:0 0 100%;padding:4px}
.testimonial-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:38px 40px;text-align:center;box-shadow:var(--shadow-sm);
}
.testimonial-stars{color:#F59E0B;font-size:18px;letter-spacing:3px;margin-bottom:16px}
.testimonial-stars .off{color:var(--line)}
.testimonial-card p{font-size:17px;color:var(--ink-2);line-height:1.9}
.testimonial-author{display:flex;align-items:center;justify-content:center;gap:14px;margin-top:24px}
.testimonial-avatar{
  width:52px;height:52px;flex:none;border-radius:50%;
  display:grid;place-items:center;color:#fff;font-weight:800;font-size:20px;
  background:linear-gradient(135deg,var(--brand),#4F8BFF);
  box-shadow:0 6px 16px rgba(37,99,235,.28);
}
.testimonial-avatar.lg{width:72px;height:72px;font-size:28px}
.testimonial-meta{text-align:left}
.testimonial-meta b{display:block;font-size:15px}
.testimonial-meta span{font-size:13px;color:var(--muted)}
.carousel-controls{
  position:absolute;top:50%;transform:translateY(-50%);
  width:42px;height:42px;border-radius:50%;border:1px solid var(--line);
  background:#fff;color:var(--ink-2);display:grid;place-items:center;font-size:18px;
  box-shadow:var(--shadow-sm);transition:var(--ease);z-index:2;
}
.carousel-controls:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-50%) scale(1.05)}
.carousel-prev{left:-14px}
.carousel-next{right:-14px}
.carousel-dots{display:flex;justify-content:center;gap:9px;margin-top:22px}
.carousel-dots button{
  width:9px;height:9px;padding:0;border-radius:50%;border:0;
  background:var(--line);transition:var(--ease);
}
.carousel-dots button.on{background:var(--brand);width:26px;border-radius:99px}

/* --------------------------------------------------------------------------
   11. 服务页
   -------------------------------------------------------------------------- */
.service-tabs{
  position:sticky;top:70px;z-index:20;
  display:flex;gap:8px;flex-wrap:wrap;justify-content:center;
  padding:14px 0;margin-bottom:40px;
  background:rgba(255,255,255,.94);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.service-tabs a,.service-tab{
  padding:9px 18px;border-radius:99px;border:1px solid var(--line);background:#fff;
  font-size:14.5px;font-weight:600;color:var(--ink-2);cursor:pointer;transition:var(--ease);
}
.service-tabs a:hover,.service-tab:hover{border-color:var(--brand);color:var(--brand)}
.service-tabs a.on,.service-tabs .active,.service-tab.on{
  background:var(--brand);border-color:var(--brand);color:#fff;
}
.service-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:36px;margin-bottom:34px;
  box-shadow:var(--shadow-sm);transition:box-shadow var(--ease),border-color var(--ease);
}
.service-card:hover{box-shadow:var(--shadow);border-color:#BFD4FF}
.service-head{display:flex;gap:18px;align-items:flex-start;flex-wrap:wrap;margin-bottom:22px}
.service-head .ico{width:58px;height:58px;border-radius:16px;font-size:26px;margin-bottom:0}
.service-head h3{margin-bottom:6px}
.service-head .short{color:var(--muted);font-size:15px}
.service-features{display:grid;gap:9px;margin-top:20px}
.service-features li{
  font-size:15px;color:var(--ink-2);padding-left:22px;position:relative;
}
.service-features li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;
  border-radius:50%;background:var(--brand);opacity:.65;
}
.techstack{display:grid;gap:16px;margin-top:28px;padding-top:24px;border-top:1px dashed var(--line)}
.tech-group h5{margin:0 0 10px;font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--muted);text-transform:uppercase}
.tech-chips{display:flex;flex-wrap:wrap;gap:8px}
.tech-chip{
  display:inline-block;font-size:13px;font-weight:600;color:var(--brand-dark);
  background:var(--brand-soft);border:1px solid #DBEAFE;padding:6px 13px;border-radius:99px;
  transition:var(--ease);
}
.tech-chip:hover{background:var(--brand);color:#fff;border-color:var(--brand)}
.scenario-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:26px}
.scenario-card{
  background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;transition:var(--ease);
}
.scenario-card:hover{background:var(--brand-050);border-color:#BFD4FF;transform:translateY(-3px)}
.scenario-card b{display:block;font-size:15px;margin-bottom:6px}
.scenario-card p{font-size:14px;color:var(--muted)}

/* 流程时间线（5 步） */
.process{
  display:grid;grid-template-columns:repeat(5,1fr);gap:22px;
  counter-reset:step;position:relative;
}
.process .step{
  position:relative;padding:26px 22px;border:1px solid var(--line);
  border-radius:var(--radius);background:#fff;transition:var(--ease);
}
.process .step:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#BFD4FF}
.process .step::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  display:inline-block;font-size:13px;font-weight:800;color:var(--brand);
  letter-spacing:.1em;background:var(--brand-soft);padding:4px 10px;border-radius:8px;
}
.process .step h4{margin:12px 0 8px;font-size:17px}
.process .step p{font-size:14px;color:var(--muted)}

/* 竖向发展历程 */
.timeline{position:relative;padding-left:34px;display:grid;gap:30px}
.timeline::before{content:"";position:absolute;left:8px;top:8px;bottom:8px;width:2px;background:var(--line)}
.timeline li{position:relative}
.timeline li::before{
  content:"";position:absolute;left:-32px;top:8px;width:12px;height:12px;
  border-radius:50%;background:#fff;border:3px solid var(--brand);
}
.timeline b{font-size:15px;color:var(--brand);display:block;margin-bottom:4px}
.timeline p{font-size:15px;color:var(--ink-2)}

/* --------------------------------------------------------------------------
   12. 案例
   -------------------------------------------------------------------------- */
.filter-bar{
  display:flex;flex-direction:column;gap:14px;margin-bottom:32px;
  padding:18px 20px;background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);
}
.filter-group{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.filter-group .filter-label{font-size:13px;font-weight:700;color:var(--muted);letter-spacing:.06em;min-width:72px}
.filter-btn{
  padding:7px 16px;border-radius:99px;border:1px solid var(--line);background:#fff;
  font-size:14px;font-weight:600;color:var(--ink-2);transition:var(--ease);
}
.filter-btn:hover{border-color:var(--brand);color:var(--brand)}
.filter-btn.on{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(37,99,235,.25)}
.tag{
  display:inline-block;font-size:12px;font-weight:700;color:var(--brand);
  background:var(--brand-soft);padding:4px 11px;border-radius:99px;margin-bottom:12px;
}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.case{overflow:hidden;padding:0;display:flex;flex-direction:column;cursor:pointer}
.case .thumb{
  height:170px;display:grid;place-items:center;color:#fff;
  font-size:32px;font-weight:800;letter-spacing:.04em;
  background:linear-gradient(135deg,var(--brand-dark),var(--brand) 55%,#6F9DFF);
  transition:transform .4s ease;
}
.case:hover .thumb{transform:scale(1.02)}
.case .body{padding:24px;display:flex;flex-direction:column;flex:1}
.case .tag{
  display:inline-block;align-self:flex-start;font-size:12px;font-weight:700;
  color:var(--brand);background:var(--brand-soft);padding:4px 11px;border-radius:99px;margin-bottom:12px;
}
.case .body h3{font-size:18px;margin-bottom:8px}
.case .body p{font-size:14px;color:var(--muted)}
.case .tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.case .tags span{
  font-size:12px;color:var(--ink-2);background:var(--bg-soft);
  border:1px solid var(--line);padding:4px 10px;border-radius:99px;
}
.metrics{display:flex;gap:18px;margin-top:16px;padding-top:16px;border-top:1px dashed var(--line)}
.metrics b{display:block;font-size:18px;color:var(--brand);font-variant-numeric:tabular-nums}
.metrics span{font-size:12px;color:var(--muted)}
.case .body .link-more{margin-top:auto;padding-top:16px}
.empty{padding:26px;text-align:center;color:var(--muted);font-size:14px;border:1px dashed var(--line);border-radius:12px}

/* 案例弹窗 */
.modal{
  position:fixed;inset:0;z-index:120;display:none;
  align-items:center;justify-content:center;padding:24px;
  background:rgba(13,20,36,.62);backdrop-filter:blur(3px);
}
.modal.on{display:flex}
.modal-panel{
  position:relative;width:100%;max-width:780px;max-height:88vh;overflow-y:auto;
  background:#fff;border-radius:var(--radius-lg);padding:38px;
  box-shadow:var(--shadow-lg);animation:modalIn .28s ease;
}
@keyframes modalIn{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
.modal-close{
  position:absolute;top:18px;right:18px;width:38px;height:38px;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--ink-2);font-size:20px;line-height:1;
  display:grid;place-items:center;transition:var(--ease);
}
.modal-close:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.modal-panel h3{font-size:22px;margin-bottom:8px;padding-right:44px}
.modal-panel .modal-sub{font-size:14px;color:var(--muted);margin-bottom:22px}
.modal-block{margin-top:22px}
.modal-block h4{
  font-size:14px;color:var(--brand);letter-spacing:.06em;margin-bottom:8px;
  text-transform:uppercase;
}
.modal-block p{font-size:15px;color:var(--ink-2)}
.case-result-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:16px}
.case-result{
  background:var(--brand-soft);border:1px solid #DBEAFE;border-radius:var(--radius);
  padding:18px;text-align:center;
}
.case-result b{display:block;font-size:22px;color:var(--brand-dark);font-variant-numeric:tabular-nums}
.case-result span{font-size:12px;color:var(--muted)}
.modal-review{
  margin-top:22px;padding:20px;background:var(--bg-soft);border-left:3px solid var(--brand);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
}
.modal-review p{font-size:14.5px;color:var(--ink-2)}
.modal-review .who{margin-top:8px;font-size:13px;color:var(--muted)}

/* --------------------------------------------------------------------------
   13. 关于我们
   -------------------------------------------------------------------------- */
.team-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.team-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 26px;text-align:center;transition:var(--ease);
}
.team-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:#BFD4FF}
.team-avatar{
  width:72px;height:72px;margin:0 auto 16px;border-radius:50%;
  display:grid;place-items:center;color:#fff;font-weight:800;font-size:28px;
  background:linear-gradient(135deg,var(--brand),#4F8BFF);
  box-shadow:0 8px 20px rgba(37,99,235,.26);
}
.team-card b{display:block;font-size:17px}
.team-role{font-size:13px;color:var(--brand);font-weight:600;margin:4px 0 10px;display:block}
.team-card p{font-size:14px;color:var(--muted)}
.cert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cert-item{
  display:flex;gap:14px;align-items:flex-start;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:var(--ease);
}
.cert-item:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#BFD4FF}
.cert-item .ico{width:44px;height:44px;border-radius:12px;font-size:20px;margin-bottom:0;flex:none}
.cert-item b{display:block;font-size:15px;margin-bottom:4px}
.cert-item span{display:block;font-size:13px;color:var(--muted)}
.cert-item .year{
  display:inline-block;margin-top:8px;font-size:12px;font-weight:700;
  color:var(--success);background:var(--success-soft);padding:3px 10px;border-radius:99px;
}
.partner-wall{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
}
.partner{
  height:88px;display:grid;place-items:center;text-align:center;padding:12px;
  border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;
  font-size:14px;font-weight:700;color:var(--muted);
  filter:grayscale(1);opacity:.55;
  transition:filter var(--ease),opacity var(--ease),transform var(--ease),border-color var(--ease);
}
.partner:hover{filter:grayscale(0);opacity:1;transform:scale(1.04);color:var(--ink);border-color:var(--brand)}
.quote{font-size:18px;color:var(--ink-2);border-left:3px solid var(--brand);padding-left:20px;margin:0}
.quote-by{margin-top:14px;font-size:14px;color:var(--muted)}

/* --------------------------------------------------------------------------
   14. 新闻
   -------------------------------------------------------------------------- */
.news-list{display:grid;gap:16px}
.news-item{
  display:grid;grid-template-columns:130px 1fr;gap:26px;align-items:start;
  padding:24px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;transition:var(--ease);
}
.news-item:hover{box-shadow:var(--shadow);transform:translateX(4px);border-color:#BFD4FF}
.news-date{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.news-item h3{font-size:18px;margin-bottom:6px}
.news-item p{font-size:14px;color:var(--muted)}
.tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.tags span{
  font-size:12px;color:var(--ink-2);background:var(--bg-soft);
  border:1px solid var(--line);padding:4px 10px;border-radius:99px;
}
.badge-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.badge-row span{font-size:13px;background:var(--brand-soft);color:var(--brand-dark);padding:6px 12px;border-radius:99px;font-weight:600}

/* --------------------------------------------------------------------------
   15. 联系
   -------------------------------------------------------------------------- */
.info-list{display:grid;gap:20px}
.info-list li{display:flex;gap:14px;align-items:flex-start}
.info-list .ico{flex:none;width:44px;height:44px;border-radius:12px;margin-bottom:0}
.info-list b{display:block;font-size:14px;color:var(--ink)}
.info-list span{font-size:15px;color:var(--ink-2)}
.map-box{
  min-height:320px;border-radius:var(--radius);border:1px dashed var(--line);
  background:var(--bg-soft);display:grid;place-items:center;text-align:center;
  padding:32px;color:var(--muted);
}
.map-box b{color:var(--ink);display:block;margin:10px 0 6px}
.traffic-list{display:grid;gap:14px}
.traffic-list li{
  display:flex;gap:14px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;
}
.traffic-list .t-type{
  flex:none;min-width:60px;text-align:center;font-size:13px;font-weight:700;
  color:var(--brand-dark);background:var(--brand-soft);padding:5px 12px;border-radius:99px;
}
.traffic-list p{font-size:14.5px;color:var(--ink-2)}
.faq{max-width:840px;margin:0 auto}
.faq details{border:1px solid var(--line);border-radius:14px;padding:18px 22px;margin-bottom:12px;background:#fff;transition:var(--ease)}
.faq details[open]{border-color:var(--brand);box-shadow:var(--shadow-sm)}
.faq summary{cursor:pointer;font-weight:700;font-size:16px;list-style:none;position:relative;padding-right:28px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";position:absolute;right:0;top:0;color:var(--brand);font-weight:800;font-size:20px;
}
.faq details[open] summary::after{content:"−"}
.faq p{margin-top:12px;color:var(--muted);font-size:15px}

/* --------------------------------------------------------------------------
   16. 表单
   -------------------------------------------------------------------------- */
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:7px;color:var(--ink-2)}
.field label .req{color:var(--danger);margin-left:2px}
.field input,.field textarea,.field select{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:12px;
  font-size:15px;background:#fff;transition:var(--ease);
}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(37,99,235,.12);
}
.field textarea{min-height:130px;resize:vertical}
.field .err{display:none;color:var(--danger);font-size:13px;margin-top:6px}
.field.invalid input,.field.invalid textarea,.field.invalid select{border-color:var(--danger)}
.field.invalid .err{display:block}
.form-note{margin-top:12px;font-size:13px;color:var(--muted)}
.ok-msg{
  margin-top:14px;padding:12px 14px;border-radius:12px;
  background:var(--success-soft);color:#0F7A55;font-size:14px;display:none;
}
.ok-msg.on{display:block}

/* --------------------------------------------------------------------------
   17. 底部转化区 CTA
   -------------------------------------------------------------------------- */
.cta{
  background:linear-gradient(135deg,#0D1424 0%,#1D4ED8 100%);
  color:#fff;border-radius:var(--radius-lg);padding:56px;
  display:flex;justify-content:space-between;align-items:center;gap:36px;flex-wrap:wrap;
  box-shadow:var(--shadow-lg);
}
.cta h2{font-size:clamp(24px,3vw,34px);color:#fff}
.cta p{margin-top:10px;opacity:.85;max-width:620px}
.cta .btn-accent{box-shadow:0 12px 28px rgba(249,115,22,.34)}

/* --------------------------------------------------------------------------
   18. 全局悬浮联系按钮
   -------------------------------------------------------------------------- */
.float-wrap{position:fixed;right:24px;bottom:28px;z-index:110;display:flex;flex-direction:column;align-items:flex-end;gap:12px}
.float-btn{
  width:58px;height:58px;border-radius:50%;border:0;
  background:linear-gradient(135deg,#FB923C,var(--accent));color:#fff;
  font-size:24px;line-height:1;display:grid;place-items:center;
  box-shadow:0 12px 30px rgba(249,115,22,.42);transition:var(--ease);
}
.float-btn:hover{transform:translateY(-3px) scale(1.04);box-shadow:0 16px 36px rgba(249,115,22,.5)}
.float-btn .icon-close,.float-btn .icon-open{display:block;line-height:1}
.float-btn .icon-close{display:none}
.float-btn.open .icon-open{display:none}
.float-btn.open .icon-close{display:block}
.float-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-lg);padding:8px;min-width:186px;
  opacity:0;visibility:hidden;transform:translateY(12px) scale(.96);
  transform-origin:bottom right;transition:opacity .22s ease,transform .22s ease,visibility .22s;
}
.float-btn.open ~ .float-panel,
.float-wrap.open .float-panel,
.float-panel.open,
.float-panel.on{opacity:1;visibility:visible;transform:none}
.float-panel a,.float-panel button{
  display:flex;align-items:center;gap:10px;width:100%;
  padding:11px 14px;border:0;background:none;border-radius:10px;
  font-size:14.5px;font-weight:600;color:var(--ink-2);text-align:left;transition:var(--ease);
}
.float-panel a:hover,.float-panel button:hover{background:var(--brand-soft);color:var(--brand)}
.float-panel .f-ico{
  width:30px;height:30px;flex:none;border-radius:8px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);font-size:15px;
}
.float-panel .f-item-sub{display:block;font-size:12px;color:var(--muted);font-weight:400}
.float-tip{
  background:#111827;color:#fff;font-size:13px;padding:6px 12px;border-radius:8px;
  white-space:nowrap;box-shadow:var(--shadow-sm);
}

/* --------------------------------------------------------------------------
   19. 动效与状态
   -------------------------------------------------------------------------- */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:translateY(0)}
.reveal.d1{transition-delay:.08s}
.reveal.d2{transition-delay:.16s}
.reveal.d3{transition-delay:.24s}
/* 无 JS 时内容必须可见 */
html.no-js .reveal{opacity:1;transform:none}
/* 降低动效偏好：直接显示，不做位移与过渡 */
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
}
/* 打印与长截图：所有内容必须可见 */
@media print{
  .reveal{opacity:1 !important;transform:none !important}
  .site-header,.float-contact,.float-wrap{display:none !important}
}
.toast{
  position:fixed;left:50%;bottom:34px;transform:translate(-50%,20px);
  background:#111827;color:#fff;padding:12px 22px;border-radius:12px;font-size:14px;
  opacity:0;pointer-events:none;transition:opacity .25s,transform .25s;z-index:130;
  box-shadow:var(--shadow-lg);max-width:min(90vw,420px);text-align:center;
}
.toast.on{opacity:1;transform:translate(-50%,0)}
.toast.success{background:#0F7A55}
.toast.error{background:#B91C1C}

/* --------------------------------------------------------------------------
   20. 内页 Hero
   -------------------------------------------------------------------------- */
.page-hero{background:linear-gradient(150deg,#0D1424,#1D4ED8);color:#fff;padding:70px 0}
.page-hero h1{color:#fff;font-size:clamp(28px,4vw,44px)}
.page-hero p{margin-top:14px;opacity:.86;max-width:640px}
.crumb{margin-top:18px;font-size:13px;opacity:.8}
.crumb a{text-decoration:underline}
.crumb a:hover{opacity:1}

/* --------------------------------------------------------------------------
   21. 后台管理
   -------------------------------------------------------------------------- */
.admin-wrap{display:grid;grid-template-columns:230px 1fr;min-height:calc(100vh - 70px)}
.admin-side{background:#0f172a;color:#cbd5e1;padding:26px 16px}
.admin-side h4{color:#fff;font-size:13px;letter-spacing:.12em;text-transform:uppercase;margin:0 0 14px 12px}
.admin-side button{
  width:100%;text-align:left;background:none;border:0;color:#cbd5e1;padding:11px 12px;
  border-radius:10px;font-size:14.5px;transition:var(--ease);
}
.admin-side button:hover{background:rgba(255,255,255,.08);color:#fff}
.admin-side button.on{background:var(--brand);color:#fff;font-weight:700}
.admin-main{padding:34px;background:var(--bg-soft);min-width:0}
.admin-main h2{font-size:22px;margin-bottom:6px}
.admin-main .hint{color:var(--muted);font-size:14px;margin-bottom:26px}
.panel{display:none;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;margin-bottom:22px}
.panel.on{display:block}
.panel h3{font-size:16px;margin-bottom:18px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.list-row{
  display:grid;grid-template-columns:1fr auto;gap:14px;align-items:center;
  padding:14px;border:1px solid var(--line);border-radius:12px;margin-bottom:10px;background:var(--bg-soft);
}
.list-row b{font-size:15px;display:block}
.list-row span{font-size:13px;color:var(--muted)}
.list-row .ops{display:flex;gap:8px}
.mini{padding:6px 12px;border-radius:9px;border:1px solid var(--line);background:#fff;font-size:13px;transition:var(--ease)}
.mini:hover{border-color:var(--brand);color:var(--brand)}
.mini.danger:hover{border-color:var(--danger);color:var(--danger)}
.admin-bar{
  position:sticky;top:70px;z-index:40;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:14px 18px;display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  margin-bottom:24px;box-shadow:var(--shadow);
}
.admin-bar .status{font-size:13px;color:var(--muted);margin-left:auto}
.pill{font-size:12px;font-weight:700;padding:4px 10px;border-radius:99px;background:var(--success-soft);color:#0F7A55}
.pill.warn{background:var(--accent-soft);color:#9A5B00}
.repeater-item{border:1px solid var(--line);border-radius:14px;padding:18px;margin-bottom:16px;background:#FCFDFF}
.repeater-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.repeater-head b{font-size:15px}
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
.tabs button{
  padding:9px 16px;border-radius:10px;border:1px solid var(--line);background:#fff;
  font-size:14px;font-weight:600;color:var(--ink-2);transition:var(--ease);
}
.tabs button.on{background:var(--ink);color:#fff;border-color:var(--ink)}

/* --------------------------------------------------------------------------
   22. 响应式
   -------------------------------------------------------------------------- */
@media (max-width:1180px){
  .container{padding:0 20px}
}

@media (max-width:980px){
  .section{padding:72px 0}
  .section.tight{padding:48px 0}
  .hero{padding:72px 0 64px}
  .hero-grid,.split{grid-template-columns:1fr;gap:34px}
  .g3,.g4,.g2,.process{grid-template-columns:repeat(2,1fr)}
  .case-grid,.team-grid,.cert-grid{grid-template-columns:repeat(2,1fr)}
  .partner-wall{grid-template-columns:repeat(3,1fr)}
  .foot-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .scenario-grid{grid-template-columns:1fr}

  /* 汉堡菜单 */
  .nav-toggle{display:block}
  .nav-links{
    position:absolute;top:70px;left:0;right:0;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow);
    flex-direction:column;align-items:stretch;gap:2px;padding:12px;
    display:none;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 14px}
  .nav-links .btn{margin:6px 0 0;text-align:center}

  .service-tabs{top:70px;overflow-x:auto;flex-wrap:nowrap;justify-content:flex-start;border-radius:0}
  .service-tabs a{flex:none}
  .cta{padding:40px}
  .modal-panel{padding:30px}
  .admin-wrap{grid-template-columns:1fr}
  .admin-side{display:block;padding:14px}
  .admin-side h4{display:none}
  .admin-side button{width:auto;display:inline-block;white-space:nowrap;margin:0 4px 4px 0;background:rgba(255,255,255,.08)}
  .admin-side button.on{background:var(--brand)}
  .admin-main{padding:22px}
  .admin-bar{top:0}
}

@media (max-width:640px){
  .section{padding:60px 0}
  .section.tight{padding:44px 0}
  .container{padding:0 18px}
  .g3,.g4,.g2,.process,.row2,.row3,.hero-stats,.stats-grid,
  .case-grid,.team-grid,.cert-grid,.case-result-grid,.scenario-grid{grid-template-columns:1fr}
  .partner-wall{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr}
  .hero{padding:56px 0 52px}
  .hero-actions .btn{flex:1 1 auto}
  .news-item{grid-template-columns:1fr;gap:10px}
  .card{padding:24px}
  .service-card{padding:24px}
  .testimonial-card{padding:28px 22px}
  .carousel-controls{display:none}
  .modal{padding:0}
  .modal-panel{max-width:100%;max-height:100vh;height:100%;border-radius:0;padding:24px 20px}
  .modal-close{top:12px;right:12px}
  .cta{padding:30px 24px}
  .float-wrap{right:14px;bottom:16px}
  .float-btn{width:50px;height:50px;font-size:21px}
  .float-panel{min-width:168px}
  .filter-bar{padding:14px}
  .filter-group .filter-label{min-width:auto;width:100%}
  .toast{bottom:84px}
  .sec-head{margin-bottom:34px}
}