:root{
  --blue:#2E75B6;
  --deep:#1F4E79;
  --pale:#DAEEF3;
  --rose:#B87C7C;
  --ink:#16283a;
  --text:#33475b;
  --muted:#6b7f92;
  --line:#DCE7F1;
  --soft:#F4F9FC;
  --bg:#F7FAFD;
  --white:#ffffff;
  --radius:14px;
  --shadow:0 10px 30px rgba(31,78,121,.08);
  --shadow-sm:0 4px 14px rgba(31,78,121,.06);
  --maxw:1140px;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB","Source Han Sans SC",sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--blue);text-decoration:none;transition:color .2s;}
a:hover{color:var(--deep);}
img{max-width:100%;display:block;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}

/* ---------- 顶部导航 ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:70px;}
.brand{display:flex;align-items:center;gap:12px;}
.brand-mark{
  width:40px;height:40px;border-radius:11px;
  background:linear-gradient(135deg,var(--blue),var(--deep));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;letter-spacing:1px;
}
.brand-text b{display:block;font-size:17px;color:var(--ink);letter-spacing:.5px;}
.brand-text span{display:block;font-size:11px;color:var(--muted);letter-spacing:2px;}
.nav-links{display:flex;align-items:center;gap:30px;}
.nav-links a{color:var(--text);font-size:15px;}
.nav-links a:hover{color:var(--blue);}
.nav-cta{
  padding:9px 20px;border-radius:999px;
  background:var(--blue);color:#fff!important;font-size:14px;
  box-shadow:var(--shadow-sm);
}
.nav-cta:hover{background:var(--deep);color:#fff!important;}
.nav-toggle{display:none;background:none;border:0;font-size:22px;color:var(--ink);cursor:pointer;}

/* ---------- Hero ---------- */
.hero{
  background:linear-gradient(180deg,#EAF3FA 0%,#F7FAFD 100%);
  border-bottom:1px solid var(--line);
}
.hero-inner{padding:78px 0 64px;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;}
.hero-tag{
  display:inline-block;font-size:13px;letter-spacing:1px;color:var(--deep);
  background:var(--pale);padding:5px 14px;border-radius:999px;margin-bottom:22px;
}
.hero h1{font-size:40px;line-height:1.32;color:var(--ink);font-weight:700;letter-spacing:.5px;}
.hero h1 em{font-style:normal;color:var(--blue);}
.hero p.lead{font-size:17px;color:var(--muted);margin-top:20px;max-width:520px;}
.hero-actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 28px;border-radius:999px;font-size:15px;cursor:pointer;border:1px solid transparent;
  transition:all .2s;font-family:inherit;
}
.btn-primary{background:var(--blue);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--deep);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:#fff;color:var(--deep);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue);}
.hero-stats{display:flex;gap:38px;margin-top:44px;flex-wrap:wrap;}
.hero-stats .st b{display:block;font-size:26px;color:var(--deep);font-weight:700;}
.hero-stats .st span{font-size:13px;color:var(--muted);}
.hero-panel{
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:var(--shadow);
}
.hero-panel h3{font-size:16px;color:var(--ink);margin-bottom:18px;}
.mini-flow{display:flex;flex-direction:column;gap:14px;}
.mini-flow .mf{display:flex;gap:12px;align-items:flex-start;}
.mini-flow .mf i{
  flex:0 0 26px;height:26px;border-radius:50%;background:var(--pale);color:var(--deep);
  font-style:normal;font-size:13px;display:flex;align-items:center;justify-content:center;font-weight:700;
}
.mini-flow .mf div b{display:block;font-size:14px;color:var(--ink);}
.mini-flow .mf div span{font-size:13px;color:var(--muted);}

/* ---------- 合规条 ---------- */
.notice{
  background:#fff;border-bottom:1px solid var(--line);
}
.notice-inner{
  display:flex;flex-wrap:wrap;gap:10px 26px;justify-content:center;
  padding:14px 24px;font-size:13px;color:var(--muted);
}
.notice-inner span{display:inline-flex;align-items:center;gap:7px;}
.notice-inner span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--rose);}

/* ---------- Section 通用 ---------- */
.section{padding:76px 0;}
.section.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{margin-bottom:44px;}
.sec-num{font-size:13px;letter-spacing:2px;color:var(--blue);font-weight:700;}
.sec-head h2{font-size:29px;color:var(--ink);margin-top:8px;letter-spacing:.5px;}
.sec-head p{color:var(--muted);margin-top:12px;max-width:640px;}

/* ---------- 服务卡 ---------- */
.grid-services{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.svc{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 28px;transition:all .25s;
}
.svc:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe2f2;}
.svc .idx{font-size:13px;color:var(--blue);font-weight:700;letter-spacing:1px;}
.svc h3{font-size:18px;color:var(--ink);margin:12px 0 10px;}
.svc p{font-size:14px;color:var(--muted);}
.svc a{font-size:14px;display:inline-block;margin-top:14px;}

/* ---------- 老师名录 ---------- */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;}
.chip{
  padding:7px 18px;border-radius:999px;border:1px solid var(--line);background:#fff;
  font-size:14px;color:var(--text);cursor:pointer;transition:all .2s;font-family:inherit;
}
.chip:hover{border-color:var(--blue);color:var(--blue);}
.chip.active{background:var(--blue);border-color:var(--blue);color:#fff;}
.grid-teachers{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.tcard{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;transition:all .25s;
}
.tcard:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe2f2;}
.tcard .avatar{
  width:56px;height:56px;border-radius:50%;background:var(--pale);color:var(--deep);
  display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;margin-bottom:16px;
}
.tcard h4{font-size:16px;color:var(--ink);}
.tcard .role{font-size:13px;color:var(--muted);margin-top:4px;}
.tcard .tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px;}
.tcard .tags span{font-size:12px;color:var(--deep);background:var(--soft);border:1px solid var(--line);padding:3px 9px;border-radius:6px;}
.badge{
  display:inline-block;font-size:11px;color:var(--rose);border:1px solid #EBD3D3;
  background:#FBF3F3;padding:2px 9px;border-radius:999px;margin-left:8px;vertical-align:middle;
}
.note-line{font-size:13px;color:var(--muted);margin-top:26px;text-align:center;}

/* ---------- 区域 ---------- */
.grid-region{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.region{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;text-align:center;
}
.region b{font-size:19px;color:var(--deep);display:block;}
.region span{font-size:13px;color:var(--muted);display:block;margin-top:8px;}
.region .hq{display:inline-block;font-size:11px;color:#fff;background:var(--rose);padding:2px 10px;border-radius:999px;margin-top:12px;}

/* ---------- 家长困扰 ---------- */
.grid-voices{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.voice{
  background:var(--soft);border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;
  font-size:14.5px;color:var(--text);position:relative;
}
.voice::before{content:"\201C";position:absolute;top:10px;left:18px;font-size:40px;color:#cfe2f2;font-family:Georgia,serif;}

/* ---------- 内容精选 ---------- */
.grid-content{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.acard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:all .25s;}
.acard:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.acard .thumb{height:132px;background:linear-gradient(135deg,#E7F1F9,#D3E6F4);display:flex;align-items:center;justify-content:center;color:#9fbdd6;font-size:13px;letter-spacing:2px;}
.acard .body{padding:22px;}
.acard .cat{font-size:12px;color:var(--blue);letter-spacing:1px;}
.acard h4{font-size:16px;color:var(--ink);margin:8px 0 10px;line-height:1.5;}
.acard p{font-size:13.5px;color:var(--muted);}

/* ---------- 流程 ---------- */
.grid-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;position:relative;}
.step .n{
  width:38px;height:38px;border-radius:11px;background:var(--blue);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;margin-bottom:16px;
}
.step h4{font-size:16px;color:var(--ink);margin-bottom:8px;}
.step p{font-size:13.5px;color:var(--muted);}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:0 auto;}
.faq details{
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px 24px;margin-bottom:12px;
}
.faq summary{font-size:16px;color:var(--ink);cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;align-items:center;}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{content:"+";color:var(--blue);font-size:20px;font-weight:400;}
.faq details[open] summary::after{content:"\2212";}
.faq details p{font-size:14.5px;color:var(--muted);margin-top:14px;}

/* ---------- 表单 ---------- */
.form-wrap{max-width:680px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:40px;box-shadow:var(--shadow-sm);}
.field{margin-bottom:20px;}
.field label{display:block;font-size:14px;color:var(--ink);margin-bottom:8px;font-weight:600;}
.field label span{color:var(--rose);}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;
  font-family:inherit;font-size:14.5px;color:var(--text);background:#fcfdfe;transition:border .2s;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--blue);background:#fff;}
.field textarea{min-height:110px;resize:vertical;}
.field .hint{font-size:12.5px;color:var(--muted);margin-top:6px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.form-consent{font-size:13px;color:var(--muted);margin:6px 0 22px;line-height:1.7;}
.btn-block{width:100%;}
.form-msg{margin-top:16px;font-size:14px;display:none;}
.form-msg.ok{display:block;color:#2f7d4f;}
.form-msg.err{display:block;color:#b5504f;}

/* ---------- 页脚 ---------- */
.footer{background:#12314c;color:#c9d8e5;padding:60px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1.4fr;gap:48px;padding-bottom:44px;}
.footer h5{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.5px;}
.footer p{font-size:13.5px;color:#9fb6c9;line-height:1.9;}
.footer ul{list-style:none;}
.footer ul li{margin-bottom:10px;}
.footer ul a{color:#c9d8e5;font-size:13.5px;}
.footer ul a:hover{color:#fff;}
.footer .words{color:#fff;letter-spacing:3px;font-size:15px;margin-top:18px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;font-size:12.5px;color:#8aa2b6;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
}
.footer-bottom a{color:#a9c1d4;}

/* ---------- 页面头（子页） ---------- */
.pagehead{background:linear-gradient(180deg,#EAF3FA,#F7FAFD);border-bottom:1px solid var(--line);padding:56px 0 46px;}
.pagehead h1{font-size:32px;color:var(--ink);letter-spacing:.5px;}
.pagehead p{color:var(--muted);margin-top:12px;max-width:680px;}
.crumb{font-size:13px;color:var(--muted);margin-bottom:14px;}
.crumb a{color:var(--muted);}

/* ---------- 响应式 ---------- */
@media(max-width:960px){
  .hero-inner{grid-template-columns:1fr;gap:36px;padding:52px 0 46px;}
  .grid-services,.grid-teachers,.grid-region,.grid-voices,.grid-content,.grid-steps{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .nav-links{display:none;}
  .nav-links.open{
    display:flex;flex-direction:column;position:absolute;top:70px;left:0;right:0;
    background:#fff;border-bottom:1px solid var(--line);padding:18px 24px;gap:16px;box-shadow:var(--shadow);
  }
  .nav-toggle{display:block;}
}
@media(max-width:600px){
  .hero h1{font-size:29px;}
  .grid-services,.grid-teachers,.grid-region,.grid-voices,.grid-content,.grid-steps{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;}
  .form-wrap{padding:26px 20px;}
  .footer-grid{grid-template-columns:1fr;}
  .section{padding:54px 0;}
  .sec-head h2{font-size:23px;}
}