*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:#111827;background:#fff;-webkit-font-smoothing:antialiased}.wrap{width:min(1120px,calc(100% - 40px));margin:auto}.topbar{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid #e8edf4}.nav{height:68px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;color:#0f172a;text-decoration:none}.brand img{width:38px;height:38px;border-radius:7px;object-fit:cover}.brand strong{display:block;font-size:18px;line-height:1.05}.brand small{display:block;margin-top:3px;color:#94a3b8;font-size:8px;letter-spacing:.11em}.nav nav{display:flex;align-items:center;gap:26px}.nav nav a{text-decoration:none;color:#475569;font-size:14px;font-weight:650}.nav nav a:hover{color:#2563eb}.nav .cta{background:#2563eb;color:white;padding:9px 15px;border-radius:10px}.hero{padding:100px 0 84px;background:linear-gradient(180deg,#f5f9ff 0,#fff 95%)}.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}.kicker{color:#2563eb;font-size:11px;letter-spacing:.18em;font-weight:800;margin-bottom:16px}.hero h1,.head h2,.services-grid h2,.contact h2{margin:0;color:#0f172a;letter-spacing:-.045em}.hero h1{font-size:58px;line-height:1.07}.hero h1 span{color:#2563eb}.lead{font-size:18px;line-height:1.75;color:#64748b;max-width:650px;margin:24px 0 30px}.actions{display:flex;gap:12px}.btn{display:inline-flex;padding:12px 20px;border-radius:11px;text-decoration:none;font-weight:700}.primary{background:#2563eb;color:#fff}.ghost{border:1px solid #dbe4ee;color:#0f172a;background:#fff}.chips{display:flex;gap:10px;flex-wrap:wrap;margin-top:25px}.chips span{font-size:12px;color:#475569}.chips span:before{content:"✓";color:#2563eb;font-weight:900;margin-right:5px}.hero-card{background:#fff;border:1px solid #e2e8f0;border-radius:24px;padding:26px;box-shadow:0 22px 60px rgba(15,23,42,.09)}.mini-title{font-size:13px;color:#64748b;font-weight:700;padding-bottom:16px;border-bottom:1px solid #edf1f5}.path>div{display:grid;grid-template-columns:40px 1fr;gap:6px 10px;padding:18px 0;border-bottom:1px solid #edf1f5}.path>div:last-child{border:0}.path b{grid-row:1/3;color:#2563eb;font-size:12px}.path strong{font-size:19px}.path span{font-size:13px;color:#94a3b8}.section{padding:86px 0}.light{background:#f8fafc}.head{max-width:720px;margin-bottom:38px}.head h2,.services-grid h2,.contact h2{font-size:40px;line-height:1.15}.head p{color:#64748b;line-height:1.7;margin:13px 0 0}.course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.course-item{padding:23px;border:1px solid #e4eaf0;border-radius:18px;background:#fff}.course-item span,.num{font-size:11px;font-weight:900;color:#2563eb}.course-item h3{margin:18px 0 8px;font-size:20px}.course-item p{margin:0;color:#64748b;font-size:13px;line-height:1.7}.dark{background:#0b1322;color:#fff}.dark-head h2{color:#fff}.dark-head p{color:#9caec4}.dark .kicker{color:#79a8ff}.project-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.project-grid article{display:flex;flex-direction:column;background:#111d31;border:1px solid #21314a;border-radius:20px;padding:26px;min-height:320px}.project-grid h3{font-size:24px;margin:24px 0 12px}.project-grid p{color:#a9b7ca;font-size:14px;line-height:1.75;margin:0 0 24px}.project-grid small{margin-top:auto;color:#79a8ff;font-weight:650;line-height:1.6}.services-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:start}.service-list{margin-top:30px;border-top:1px solid #e2e8f0}.service-list>div{display:grid;grid-template-columns:45px 1fr;gap:10px;padding:18px 0;border-bottom:1px solid #e2e8f0}.service-list b{font-size:11px;color:#2563eb}.service-list span strong{display:block}.service-list span small{display:block;color:#64748b;margin-top:5px}.teacher-card{border-radius:22px;padding:30px;background:#eef5ff;border:1px solid #d7e6ff}.teacher-label{font-size:11px;color:#2563eb;font-weight:850;letter-spacing:.15em}.teacher-card h3{font-size:34px;margin:20px 0 5px}.teacher-title{font-weight:750;margin:0 0 6px}.teacher-company{color:#2563eb;font-weight:750;margin:0}.divider{height:1px;background:#cddfff;margin:25px 0}.teacher-focus{color:#607087;line-height:1.8;font-size:14px}.contact{padding:66px 0;background:#2563eb;color:#fff}.contact-grid{display:grid;grid-template-columns:1fr auto;gap:50px;align-items:center}.contact h2{color:#fff}.contact p{color:#d8e6ff;margin:12px 0 0}.pale{color:#dbe8ff}.wechat-box{min-width:300px;background:#fff;color:#0f172a;border-radius:18px;padding:22px 24px}.wechat-box small{display:block;color:#64748b}.wechat-box strong{display:block;font-size:27px;margin:7px 0 14px;letter-spacing:.03em}.wechat-box button{border:0;background:#0f172a;color:#fff;border-radius:9px;padding:9px 13px;cursor:pointer;font-weight:700}.wechat-box span{font-size:12px;color:#16a34a;margin-left:8px}footer{background:#07101d;color:#8190a5;padding:28px 0}.footer{display:flex;justify-content:space-between;gap:30px;font-size:12px}@media(max-width:850px){.hero-grid,.services-grid,.contact-grid{grid-template-columns:1fr}.hero h1{font-size:46px}.course-grid{grid-template-columns:repeat(2,1fr)}.project-grid{grid-template-columns:1fr}.wechat-box{min-width:0;width:100%}}@media(max-width:620px){.wrap{width:min(100% - 28px,1120px)}.nav nav a:not(.cta){display:none}.hero{padding:68px 0 56px}.hero h1{font-size:38px}.lead{font-size:16px}.section{padding:64px 0}.head h2,.services-grid h2,.contact h2{font-size:32px}.course-grid{grid-template-columns:1fr}.footer{flex-direction:column}.brand small{display:none}}

/* Mobile tap / anchor state fixes */
a, button{
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
.btn,
.btn:link,
.btn:visited{
  color: inherit;
}
.btn.primary,
.btn.primary:link,
.btn.primary:visited{
  background:#2563eb;
  color:#fff;
}
.btn.primary:hover,
.btn.primary:active,
.btn.primary:focus{
  background:#1d4ed8;
  color:#fff;
}
.btn.ghost,
.btn.ghost:link,
.btn.ghost:visited{
  background:#fff;
  color:#0f172a;
  border:1px solid #dbe4ee;
}
.btn.ghost:hover,
.btn.ghost:active,
.btn.ghost:focus{
  background:#eef5ff;
  color:#0f172a;
  border-color:#b8cff5;
}
.nav .cta,
.nav .cta:link,
.nav .cta:visited,
.nav .cta:hover,
.nav .cta:active,
.nav .cta:focus{
  background:#2563eb;
  color:#fff !important;
}
#course,#projects,#services,#contact{
  scroll-margin-top:78px;
}