/* ============================================================
   樊荣强口才培训 · 新站样式
   现代、响应式、专业培训视觉
   ============================================================ */
:root{
  --brand:#0b7285;         /* 深青蓝主色 */
  --brand-2:#0c8599;
  --accent:#f59e0b;        /* 暖琥珀点缀 */
  --accent-2:#fb923c;
  --ink:#1f2937;           /* 正文深灰 */
  --ink-2:#475569;
  --muted:#64748b;
  --bg:#f8fafc;
  --card:#ffffff;
  --line:#e2e8f0;
  --dark:#0f172a;
  --radius:16px;
  --shadow:0 10px 30px rgba(15,23,42,.08);
  --shadow-lg:0 20px 50px rgba(15,23,42,.14);
  --font:'PingFang SC','Microsoft YaHei','Hiragino Sans GB',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.container{max-width:1280px;margin:0 auto;padding:0 20px}

/* ---------- Header ---------- */
.header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;height:74px}
.brand{display:flex;align-items:center;gap:8px;flex-shrink:0;margin-left:14px}
.brand-name{font-weight:800;font-size:26px;color:var(--brand);letter-spacing:.5px;line-height:1.12;white-space:nowrap}
.brand-name small{display:block;font-size:11px;color:var(--muted);font-weight:500;letter-spacing:.5px;white-space:nowrap}
.nav{display:flex;gap:6px;flex-shrink:1;min-width:0;align-items:center}
.nav a,.nav .nav-btn{padding:8px 14px;border-radius:10px;font-size:15px;color:var(--ink-2);font-weight:600;white-space:nowrap;flex-shrink:0;transition:.2s;background:none;border:none;cursor:pointer;display:inline-flex;align-items:center;gap:3px}
.nav a:hover,.nav a.active,.nav .nav-btn:hover{color:var(--brand);background:#e7f6f8}
.nav-item.has-drop{position:relative;flex-shrink:0}
.nav-item.has-drop .dropdown{position:absolute;top:100%;left:0;min-width:150px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 14px 34px rgba(15,23,42,.14);padding:8px;display:none;flex-direction:column;gap:2px;z-index:60}
.nav-item.has-drop:hover .dropdown,.nav-item.has-drop.active .dropdown{display:flex}
.nav-item.has-drop .dropdown a{padding:9px 12px;border-radius:8px;font-size:13.5px;font-weight:600;color:var(--ink-2)}
.nav-item.has-drop .dropdown a:hover{color:var(--brand);background:#e7f6f8}
.nav-btn .caret{font-size:10px;opacity:.7}
/* 移动端汉堡菜单展开时，二级目录内联显示 */
.nav.open .nav-item.has-drop .dropdown{display:flex;position:static;box-shadow:none;border:none;padding:0 0 2px 12px}
.header-cta{display:flex;align-items:center;gap:10px;flex-shrink:0;margin-right:14px}
.header-phone{text-align:right;line-height:1.15;white-space:nowrap}
.header-phone .lbl{font-size:11px;color:var(--muted)}
.header-phone .num{font-size:17px;font-weight:800;color:var(--brand);white-space:nowrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:999px;font-weight:700;font-size:15px;transition:.2s;cursor:pointer;border:none}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(245,158,11,.35)}
.btn-accent:hover{background:#ea8c00;transform:translateY(-2px)}
.btn-brand{background:var(--brand);color:#fff}
.btn-brand:hover{background:var(--brand-2)}
.btn-ghost{background:#fff;color:var(--brand);border:1.5px solid var(--brand)}
.btn-ghost:hover{background:#e7f6f8}
.menu-toggle{display:none;background:none;border:none;font-size:26px;cursor:pointer;color:var(--ink)}

/* ---------- Hero ---------- */
.hero{position:relative;width:100%;aspect-ratio:1920/526;overflow:hidden;background:#0f172a}
.hero-slide{position:absolute;inset:0;opacity:0;transition:opacity .9s ease}
.hero-slide.active{opacity:1}
.hero-slide img{width:100%;height:100%;object-fit:contain;display:block}
.hero-dots{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:3}
.hero-dots span{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.6);cursor:pointer;transition:.3s}
.hero-dots span.active{background:var(--accent);width:26px;border-radius:5px}
.hero-caption{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;color:#fff;padding:0 20px}
.hero-caption h1{font-size:clamp(26px,4vw,44px);font-weight:900}
.hero-caption p{font-size:16px;margin-top:10px;opacity:.95}

/* ---------- Section shells ---------- */
.section{padding:80px 0}
.section.alt{background:#fff}
.section-head{max-width:680px;margin:0 auto 44px;text-align:center}
.eyebrow{display:inline-block;color:var(--brand);font-weight:700;font-size:14px;letter-spacing:2px;text-transform:uppercase;background:#e7f6f8;padding:6px 14px;border-radius:999px;margin-bottom:14px}
.section-head h2{font-size:clamp(24px,3.4vw,38px);font-weight:900;color:var(--ink);letter-spacing:.5px}
.section-head p{color:var(--muted);margin-top:12px;font-size:16px}

/* ---------- Cards ---------- */
.grid{display:grid;gap:22px}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.grid.cols-4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.25s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.card .thumb{display:block;aspect-ratio:2/3;overflow:hidden;background:#e9f3f4}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:.4s}
.card:hover .thumb img{transform:scale(1.06)}
.card-body{padding:20px}
.card-body h3{font-size:17px;font-weight:800;color:var(--ink);line-height:1.4;margin-bottom:8px}
.card-body .meta{font-size:13px;color:var(--muted);display:flex;gap:10px;flex-wrap:wrap;margin-bottom:10px}
.card-body .desc{font-size:14px;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.tag{font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px;background:#e7f6f8;color:var(--brand)}
.tag.amber{background:#fdf1dc;color:#b45309}
.price{font-size:18px;font-weight:900;color:var(--accent)}
.price small{font-size:12px;color:var(--muted);font-weight:600}

/* ---------- Courses categories ---------- */
.course-cat{margin-bottom:48px}
.course-cat .cat-head{display:flex;align-items:center;gap:14px;margin-bottom:20px}
.course-cat .cat-head .bar{width:6px;height:26px;background:var(--brand);border-radius:3px}
.course-cat .cat-head h3{font-size:24px;font-weight:800}

/* ---------- Teacher ---------- */
.teacher-wrap{display:grid;grid-template-columns:360px 1fr;gap:40px;align-items:start}
.teacher-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.teacher-card img{width:100%;aspect-ratio:1;object-fit:cover}
.teacher-card .t-body{padding:22px;text-align:center}
.teacher-card .t-body h3{font-size:22px;font-weight:900;color:var(--brand)}
.teacher-card .t-body p{color:var(--muted);font-size:14px;margin-top:4px}
.teacher-text h3{font-size:24px;font-weight:900;color:var(--ink);margin-bottom:14px}
.teacher-text p{color:var(--ink-2);font-size:16px;margin-bottom:14px}
.honors{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:20px}
.honors li{list-style:none;font-size:14px;color:var(--ink-2);background:#fff;border:1px solid var(--line);padding:12px 14px;border-radius:12px;display:flex;gap:8px;align-items:center}
.honors li::before{content:"★";color:var(--accent)}

/* ---------- Articles / News ---------- */
.news-item{display:flex;gap:18px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);transition:.2s}
.news-item:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}
.news-item .n-date{min-width:64px;text-align:center;background:#e7f6f8;border-radius:12px;padding:10px 8px;color:var(--brand)}
.news-item .n-date b{display:block;font-size:22px;line-height:1}
.news-item .n-date span{font-size:12px}
.news-item h3{font-size:16px;font-weight:800;margin-bottom:4px}
.news-item .n-meta{font-size:12.5px;color:#94a3b8;margin-bottom:6px}
.news-item .n-hits{color:var(--accent-2,#d97706)}
.news-item .n-desc{font-size:14px;color:var(--muted);-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;display:-webkit-box}

/* ---------- Announcement banner ---------- */
.notice{background:linear-gradient(120deg,var(--brand),var(--brand-2));border-radius:var(--radius);color:#fff;padding:26px 30px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;box-shadow:var(--shadow-lg)}
.notice .notice-tag{background:var(--accent);color:#fff;font-weight:800;padding:6px 12px;border-radius:8px;font-size:13px}
.notice .notice-title{font-size:18px;font-weight:700}
.notice .notice-more{color:#fff;opacity:.85;font-size:14px}

/* ---------- CTA ---------- */
.cta{background:linear-gradient(135deg,#0f172a 0%,#123c50 100%);color:#fff;text-align:center;padding:70px 20px}
.cta h2{font-size:clamp(24px,4vw,40px);font-weight:900}
.cta p{color:#cbd5e1;margin:16px auto 28px;max-width:600px}
.cta .big-phone{font-size:30px;font-weight:900;color:var(--accent);letter-spacing:1px}
.cta-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-top:24px}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.contact-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);text-align:center}
.contact-box .ic{font-size:30px;margin-bottom:10px}
.contact-box h4{font-size:15px;color:var(--muted);margin-bottom:6px}
.contact-box .val{font-size:19px;font-weight:800;color:var(--ink)}

/* ---------- Footer ---------- */
.footer{background:var(--dark);color:#cbd5e1;padding:60px 0 30px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px;margin-bottom:40px}
.footer h5{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer a{color:#cbd5e1;display:block;padding:5px 0;transition:.2s}
.footer a:hover{color:var(--accent)}
.footer .fbrand{font-size:20px;font-weight:800;color:#fff;margin-bottom:10px}
.footer .fcopy{border-top:1px solid #1e293b;padding-top:22px;text-align:center;color:#94a3b8;font-size:12px}

/* ---------- Page header (inner) ---------- */
.page-hero{background:linear-gradient(120deg,var(--brand),#123c50);color:#fff;padding:56px 20px;text-align:center}
.page-hero h1{font-size:clamp(26px,4vw,42px);font-weight:900}
.page-hero p{color:#c8e6ec;margin-top:10px;font-size:16px}

/* ---------- Filters / search ---------- */
.filters{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:30px 0}
.chip{padding:9px 18px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:14px;font-weight:600;color:var(--ink-2);cursor:pointer;transition:.2s}
.chip:hover{border-color:var(--brand);color:var(--brand)}
.chip.active{background:var(--brand);color:#fff;border-color:var(--brand)}
.group-name{font-size:12px;font-weight:700;color:#94a3b8;letter-spacing:.5px;margin-left:6px;padding:9px 4px 9px 0;white-space:nowrap}
#catFilter{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.search-bar{display:flex;gap:10px;max-width:560px;margin:0 auto 6px}
.search-bar input{flex:1;padding:14px 18px;border:1px solid var(--line);border-radius:12px;font-size:15px;font-family:inherit}
.search-bar input:focus{outline:2px solid var(--brand)}
.result-count{text-align:center;color:var(--muted);font-size:14px;margin:14px 0}
.pagination{display:flex;gap:8px;justify-content:center;margin-top:30px;flex-wrap:wrap}
.pagination button{min-width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:10px;font-weight:700;cursor:pointer}
.pagination button.active{background:var(--brand);color:#fff;border-color:var(--brand)}
.pagination button:disabled{opacity:.4;cursor:default}

/* ---------- Article detail ---------- */
.article{max-width:860px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:40px;box-shadow:var(--shadow)}
.article h1{font-size:clamp(22px,3vw,34px);font-weight:900;margin-bottom:10px;line-height:1.35}
.article .a-meta{color:var(--muted);font-size:14px;padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:24px;display:flex;gap:14px;flex-wrap:wrap}
.article .a-body{font-size:16px;color:var(--ink-2);line-height:1.95}
.article .a-body p{margin-bottom:16px}
.article .a-body img{border-radius:12px;margin:14px auto;display:block;height:auto !important;max-width:100%}
.article .a-body h2,.article .a-body h3{margin:22px 0 10px;color:var(--ink)}
.article .a-body a{color:var(--brand);text-decoration:underline}
.back{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-weight:700;margin-bottom:22px}

/* ---------- Responsive ---------- */
@media(max-width:1300px){ .header-phone{display:none} }
@media(max-width:1000px){
  .nav{display:none;position:absolute;top:74px;left:0;right:0;background:#fff;flex-direction:column;gap:4px;padding:10px 20px;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
  .nav.open{display:flex}
  .menu-toggle{display:block}
  .grid.cols-3,.grid.cols-4{grid-template-columns:repeat(2,1fr)}
  .teacher-wrap{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .hero{aspect-ratio:16/9}
}
@media(max-width:600px){
  .grid.cols-2,.grid.cols-3,.grid.cols-4{grid-template-columns:1fr}
  .honors{grid-template-columns:1fr}
  .header-phone{display:none}
  .article{padding:22px}
  .footer-grid{grid-template-columns:1fr}
  .hero{aspect-ratio:16/10}

  /* ①页头在手机上收紧，避免报名键和菜单被挤出画面、宽度撑爆 */
  .header-inner{height:56px;gap:6px;padding:0 6px}
  .brand{flex:1 1 auto;min-width:0;margin-left:4px;gap:5px}
  .brand-name{font-size:16px;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .brand-name small{font-size:10px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .header-cta{margin-right:4px;gap:6px;flex-shrink:0}
  .header-cta .btn-accent{padding:7px 12px;font-size:13px;white-space:nowrap}
  .menu-toggle{font-size:20px}
  .nav{top:56px}

  /* ②阅读页「返回列表」上方留白收紧 */
  .section{padding:16px 0}

  /* ③文章图片上下边距一致，末尾不留多余空段 */
  .article .a-body img{margin:14px auto}
  .article .a-body p:last-child{margin-bottom:0}
}