:root{
  --blue:#16357a;
  --blue-2:#1f4fb0;
  --orange:#ff7a18;
  --ink:#1c2430;
  --gray:#5b6675;
  --bg:#f6f8fc;
  --line:#e7ecf3;
  --white:#fff;
  --radius:14px;
  --shadow:0 10px 30px rgba(20,40,90,.08);
  --container:1140px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei",-apple-system,"Segoe UI",Roboto,sans-serif;
  color:var(--ink);background:var(--white);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
.section{padding:64px 0}
.section-alt{background:var(--bg)}
.center{text-align:center;margin-top:2rem}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4em;
  padding:12px 22px;border-radius:999px;font-weight:600;font-size:15px;cursor:pointer;
  border:1px solid transparent;transition:.2s;white-space:nowrap}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:#ef6a06;transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--blue);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--blue-2);color:var(--blue-2)}
.btn-light{background:#fff;color:var(--blue)}
.btn-light:hover{background:#f0f4ff}

/* 顶部条 */
.topbar{background:var(--blue);color:#cdd9f3;font-size:13px;padding:7px 0}
.topbar-inner{display:flex;justify-content:space-between;flex-wrap:wrap;gap:6px}
.topbar a{color:#fff;font-weight:600}
.topbar-right{opacity:.85}

/* 导航 */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);
  backdrop-filter:saturate(160%) blur(8px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:66px}
.logo{font-size:24px;font-weight:800;color:var(--blue);letter-spacing:1px}
.logo span{color:var(--orange)}
.main-nav{display:flex;gap:26px}
.main-nav a{font-size:15px;font-weight:500;color:var(--ink);position:relative;padding:6px 0}
.main-nav a:hover,.main-nav a.active{color:var(--blue-2)}
.main-nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:3px;border-radius:3px;background:var(--orange)}
.nav-toggle{display:none;background:none;border:none;font-size:26px;color:var(--blue);cursor:pointer}

/* 英雄区 */
.hero{position:relative;background:
  radial-gradient(900px 400px at 85% -10%,rgba(31,79,176,.18),transparent),
  linear-gradient(160deg,#0f255c,#16357a 55%,#1f4fb0);
  color:#fff;overflow:hidden}
.hero-inner{display:flex;gap:40px;align-items:center;padding:70px 20px 80px;flex-wrap:wrap}
.hero-text{flex:1 1 480px}
.hero-tag{display:inline-block;background:rgba(255,255,255,.14);color:#dfe8ff;
  padding:6px 14px;border-radius:999px;font-size:13px;margin-bottom:18px}
.hero h1{font-size:clamp(30px,5vw,48px);line-height:1.2;font-weight:800}
.hero h1 em{font-style:normal;color:var(--orange)}
.hero-sub{margin:18px 0 26px;color:#d6e0f7;max-width:540px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-points{list-style:none;display:flex;gap:20px;flex-wrap:wrap;margin-top:24px;color:#cdd9f3;font-size:14px}
.hero-card{flex:0 0 300px;background:rgba(255,255,255,.96);color:var(--ink);border-radius:18px;
  padding:26px;text-align:center;box-shadow:var(--shadow);position:relative}
.hero-card-badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);
  background:var(--orange);color:#fff;font-size:12px;font-weight:700;padding:5px 14px;border-radius:999px}
.hero-card h3{color:var(--blue);margin:14px 0 6px}
.hero-card p{color:var(--gray);font-size:14px}
.hero-card .btn{margin:16px 0 12px;width:100%}
.hero-card-tel{font-weight:700;color:var(--blue)}

/* 轮播图板块 */
.banner{position:relative;overflow:hidden;height:clamp(360px,52vw,480px);background:#0f255c}
.banner-track{display:flex;height:100%;transition:transform .55s cubic-bezier(.4,0,.2,1);will-change:transform}
.banner-slide{flex:0 0 100%;height:100%;display:flex;align-items:center;position:relative}
.banner-slide::after{content:"";position:absolute;inset:0;background:radial-gradient(800px 380px at 85% 0%,rgba(255,255,255,.10),transparent)}
.slide-1{background:linear-gradient(160deg,#0f255c,#1f4fb0 60%,#2a5fce)}
.slide-2{background:linear-gradient(160deg,#3b1d6e,#5b2da0 55%,#7a3fc4)}
.slide-3{background:linear-gradient(160deg,#0c3b45,#136b6f 55%,#1f9c8f)}
.banner-inner{position:relative;z-index:2;color:#fff;max-width:620px}
.banner-tag{display:inline-block;background:rgba(255,255,255,.16);color:#eaf0ff;
  padding:6px 14px;border-radius:999px;font-size:13px;margin-bottom:16px}
.banner-inner h1{font-size:clamp(28px,5vw,46px);line-height:1.2;font-weight:800}
.banner-inner h1 em{font-style:normal;color:var(--orange)}
.banner-sub{margin:16px 0 24px;color:#e3ebff;max-width:520px;font-size:15px}
.banner-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn-ghost-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.6)}
.btn-ghost-light:hover{background:rgba(255,255,255,.14);border-color:#fff}
.banner-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:4;width:44px;height:44px;
  border-radius:50%;border:none;background:rgba(0,0,0,.28);color:#fff;font-size:26px;line-height:1;
  cursor:pointer;display:grid;place-items:center;transition:.2s}
.banner-arrow:hover{background:rgba(0,0,0,.5)}
.banner-arrow.prev{left:16px}
.banner-arrow.next{right:16px}
.banner-dots{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);z-index:4;display:flex;gap:8px}
.banner-dot{width:10px;height:10px;border-radius:999px;border:none;background:rgba(255,255,255,.5);cursor:pointer;padding:0;transition:.2s}
.banner-dot.active{width:26px;background:var(--orange)}

/* 数据 */
.stats{background:#fff;border-bottom:1px solid var(--line)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:34px 20px}
.stat{text-align:center}
.stat strong{display:block;font-size:34px;color:var(--blue);font-weight:800}
.stat span{color:var(--gray);font-size:14px}

/* 通用标题 */
.section-head{text-align:center;max-width:680px;margin:0 auto 40px}
.section-head h2{font-size:clamp(24px,3.5vw,34px);color:var(--blue);position:relative;padding-bottom:14px}
.section-head h2::after{content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);
  width:54px;height:4px;border-radius:4px;background:var(--orange)}
.section-head p{color:var(--gray);margin-top:14px}

/* 课程卡 */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.course-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  transition:.2s;display:block}
.course-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
.course-icon{width:54px;height:54px;display:grid;place-items:center;font-size:26px;
  background:linear-gradient(135deg,#eaf0ff,#f6f8fc);border-radius:12px;margin-bottom:14px}
.course-card h3{font-size:18px;color:var(--blue);margin-bottom:8px}
.course-card p{color:var(--gray);font-size:14px}

/* 优势 */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;position:relative}
.feature span{font-size:22px;font-weight:800;color:var(--orange);display:block;margin-bottom:8px}
.feature h3{font-size:17px;color:var(--blue);margin-bottom:8px}
.feature p{color:var(--gray);font-size:14px}

/* 校区 */
.campus-inner{display:flex;gap:40px;align-items:center;flex-wrap:wrap}
.campus-text{flex:1 1 460px}
.campus-text h2{font-size:28px;color:var(--blue);margin-bottom:14px}
.campus-text>p{color:var(--gray);margin-bottom:18px}
.campus-list{list-style:none;display:grid;gap:10px;margin-bottom:22px}
.campus-list li{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 16px;font-size:15px}
.campus-map{flex:1 1 380px;min-height:280px}
.map-placeholder{height:100%;min-height:280px;border-radius:var(--radius);border:2px dashed var(--line);
  display:grid;place-content:center;text-align:center;color:var(--gray);background:#fafcff}

/* 校园风采：图片 / 视频 */
.edit-only{display:none}
body[contenteditable=true] .edit-only{display:inline-block}
.showcase-block{margin-bottom:30px}
.showcase-bar{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.showcase-bar h3{color:var(--blue);font-size:18px}
.media-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.media-grid img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:12px;border:1px solid var(--line);background:#fafcff}
.video-item{position:relative;width:100%;aspect-ratio:16/9;border-radius:12px;overflow:hidden;background:#0f1b3a;display:grid;place-items:center}
.video-item iframe,.video-item video{width:100%;height:100%;border:0}
.video-placeholder{color:#9aa6c4;font-size:14px;text-align:center;padding:10px}

/* 资讯首页预览 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:.2s}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.news-card .news-cat{display:inline-block;background:#eaf0ff;color:var(--blue-2);
  font-size:12px;padding:3px 10px;border-radius:999px;margin-bottom:10px}
.news-card h3{font-size:16px;color:var(--blue);margin-bottom:8px}
.news-card p{color:var(--gray);font-size:14px;margin-bottom:10px}
.news-card time{color:#9aa6b6;font-size:13px}

/* 新闻列表 */
.news-list{display:grid;gap:18px;max-width:820px;margin:0 auto}
.news-item{display:flex;gap:18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:18px;transition:.2s}
.news-item:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.news-thumb{width:64px;height:64px;flex:0 0 64px;border-radius:12px;background:linear-gradient(135deg,#eaf0ff,#f6f8fc);
  display:grid;place-items:center;font-size:28px}
.news-body{flex:1}
.news-cat{display:inline-block;background:#eaf0ff;color:var(--blue-2);font-size:12px;
  padding:3px 10px;border-radius:999px;margin-bottom:6px}
.news-body h3{font-size:18px;color:var(--blue);margin-bottom:6px}
.news-body p{color:var(--gray);font-size:14px;margin-bottom:6px}
.news-body time{color:#9aa6b6;font-size:13px}

/* 文章页 */
.article{max-width:780px}
.breadcrumb{color:var(--gray);font-size:14px;margin-bottom:16px}
.breadcrumb a{color:var(--blue-2)}
.article h1{font-size:30px;color:var(--blue);margin:10px 0 6px;line-height:1.3}
.article-date{color:#9aa6b6;font-size:14px;display:block;margin-bottom:20px}
.article-content h2{font-size:21px;color:var(--blue);margin:26px 0 10px}
.article-content p{margin-bottom:14px;color:#2b3543}
.article-content a{color:var(--blue-2);font-weight:600;text-decoration:underline}

/* 关于 */
.about-inner{display:flex;gap:40px;flex-wrap:wrap}
.about-text{flex:1 1 560px}
.about-text h2{font-size:24px;color:var(--blue);margin:22px 0 12px}
.about-text p{color:#2b3543;margin-bottom:12px}
.about-side{flex:1 1 300px}
.side-card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.side-card h3{color:var(--blue);margin-bottom:14px}
.side-card p{margin-bottom:10px;font-size:15px}
.side-card .side-img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;margin-bottom:12px}

/* 课程详情 */
.course-detail{display:flex;gap:22px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:26px;margin-bottom:18px}
.course-detail-icon{width:60px;height:60px;flex:0 0 60px;border-radius:14px;
  background:linear-gradient(135deg,#eaf0ff,#f6f8fc);display:grid;place-items:center;font-size:28px}
.course-detail h2{font-size:22px;color:var(--blue);margin-bottom:8px}
.course-detail p{color:var(--gray);margin-bottom:12px}
.tag-row{list-style:none;display:flex;gap:10px;flex-wrap:wrap}
.tag-row li{background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:5px 14px;font-size:13px;color:var(--blue-2)}

/* 联系 */
.contact-inner{display:flex;gap:40px;flex-wrap:wrap}
.contact-info{flex:1 1 380px}
.contact-info h2{font-size:24px;color:var(--blue);margin-bottom:16px}
.contact-list{list-style:none;display:grid;gap:14px;margin-bottom:20px}
.contact-list li{display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 18px}
.contact-list span{font-size:22px}
.contact-list strong{color:var(--blue)}
.contact-form-wrap{flex:1 1 420px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.contact-form-wrap h2{font-size:24px;color:var(--blue);margin-bottom:8px}
.form-note{color:var(--gray);font-size:13px;margin-bottom:18px}
.contact-form label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:14px}
.contact-form input,.contact-form select,.contact-form textarea{width:100%;margin-top:6px;padding:11px 13px;
  border:1px solid var(--line);border-radius:10px;font-size:15px;font-family:inherit;background:#fbfcfe}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{outline:none;border-color:var(--blue-2)}
.contact-form .btn{width:100%;margin-top:4px}
.form-tip{margin-top:12px;color:var(--blue-2);font-size:14px;font-weight:600}

/* CTA */
.cta{background:linear-gradient(135deg,#16357a,#1f4fb0);color:#fff}
.cta-inner{text-align:center;padding:56px 20px}
.cta h2{font-size:clamp(22px,3.5vw,32px);margin-bottom:12px}
.cta p{color:#d6e0f7;margin-bottom:22px}

/* 页脚 */
.site-footer{background:#0f1b3a;color:#c4cee0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px;padding:54px 20px 30px}
.footer-logo{color:#fff;font-size:22px}
.footer-logo span{color:var(--orange)}
.site-footer p{color:#9aa6c4;font-size:14px;margin-top:10px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:14px}
.site-footer a{display:block;color:#9aa6c4;font-size:14px;padding:4px 0}
.site-footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:16px 0;font-size:13px;color:#8b97b6}
.footer-bottom .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}

/* 悬浮咨询 */
.float-cta{position:fixed;right:20px;bottom:22px;width:54px;height:54px;border-radius:50%;
  background:var(--orange);color:#fff;display:grid;place-items:center;font-size:24px;
  box-shadow:0 8px 22px rgba(255,122,24,.45);z-index:60}
.float-cta:hover{transform:scale(1.06)}

/* 页面头图 */
.page-hero{background:linear-gradient(135deg,#0f255c,#1f4fb0);color:#fff;padding:54px 0}
.page-hero h1{font-size:clamp(26px,4vw,38px)}
.page-hero p{color:#d6e0f7;margin-top:8px}

/* 响应式 */
@media(max-width:900px){
  .card-grid,.feature-grid,.news-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:640px){
  .nav-toggle{display:block}
  .main-nav{position:absolute;top:66px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;gap:0;padding:8px 0;display:none;box-shadow:var(--shadow)}
  .main-nav.open{display:flex}
  .main-nav a{padding:12px 20px}
  .nav-cta{display:none}
  .card-grid,.feature-grid,.news-grid,.footer-grid{grid-template-columns:1fr}
  .media-grid{grid-template-columns:repeat(2,1fr)}
  .hero-inner{padding:50px 20px 60px}
  .course-detail{flex-direction:column}
  .contact-list li{align-items:center}
}