@charset "UTF-8";
/* ============================================================
   武汉晟智创育科技有限公司 — 站点统一样式表
   风格：白色背景 + 蓝色主体色
   ============================================================ */

/* ---------- 本地字体 ---------- */
@font-face{
  font-family:'Orbitron';
  font-style:normal;
  font-weight:400 900;
  font-display:swap;
  src:url('fonts/orbitron-latin.woff2') format('woff2');
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215;
}

/* ---------- 设计变量 ---------- */
:root{
  --blue:#1668E3;
  --blue-700:#0F52BE;
  --blue-800:#0A3F96;
  --blue-500:#2E82F5;
  --blue-300:#7FB2FB;
  --blue-100:#DBEAFE;
  --blue-50:#EFF6FF;

  --ink:#12203A;
  --body:#495A70;
  --muted:#7C8CA2;
  --line:#E4EBF3;
  --bg:#FFFFFF;
  --bg-soft:#F6F9FD;

  --green:#16A34A;
  --amber:#F59E0B;
  --purple:#7C3AED;

  --radius:12px;
  --shadow-sm:0 2px 10px rgba(16,52,110,.06);
  --shadow-md:0 8px 26px rgba(16,52,110,.10);
  --shadow-lg:0 16px 44px rgba(16,52,110,.16);
  --nav-h:72px;
}

/* ---------- 基础重置 ---------- */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',sans-serif;
  background:var(--bg);
  color:var(--body);
  font-size:15px;
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none}
img{display:block;max-width:100%}
button{font-family:inherit}
.num,.stat-num,.stat-n,.case-num,.amount{font-family:'Orbitron','Segoe UI',sans-serif}
::selection{background:var(--blue-100);color:var(--blue-800)}

/* ---------- 粒子背景画布 ---------- */
#particles{position:fixed;top:0;left:0;width:100%;height:100%;z-index:0;pointer-events:none}

/* ============================================================
   导航栏
   ============================================================ */
nav{
  position:fixed;top:0;left:0;width:100%;height:var(--nav-h);
  padding:0 5%;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  z-index:1000;
  display:flex;align-items:center;justify-content:space-between;
  transition:height .3s,box-shadow .3s;
}
nav.scrolled{height:62px;box-shadow:var(--shadow-sm)}
.logo{display:flex;align-items:center;gap:11px;color:var(--blue)}
.logo-icon{
  width:38px;height:38px;border-radius:10px;
  background:linear-gradient(135deg,var(--blue-500),var(--blue-800));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;
  box-shadow:0 4px 12px rgba(22,104,227,.28);flex-shrink:0;
}
.logo-text{line-height:1.2}
.logo-text b{
  display:block;font-size:16px;font-weight:700;color:var(--ink);letter-spacing:.5px;
  font-family:'Orbitron','PingFang SC','Microsoft YaHei',sans-serif;
}
.logo-text span{display:block;font-size:10px;color:var(--muted);letter-spacing:1.4px;font-weight:400}

.nav-links{display:flex;gap:30px}
.nav-links a{
  font-size:14.5px;color:var(--body);position:relative;padding:6px 0;font-weight:500;
  transition:color .25s;
}
.nav-links a::after{
  content:'';position:absolute;left:0;bottom:0;width:0;height:2px;border-radius:2px;
  background:var(--blue);transition:width .28s;
}
.nav-links a:hover,.nav-links a.active{color:var(--blue)}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}

.nav-right{display:flex;align-items:center;gap:10px}
.nav-user{display:flex;align-items:center;gap:10px}
.nav-user .uname{
  display:flex;align-items:center;gap:7px;font-size:13.5px;color:var(--ink);font-weight:600;
  background:var(--blue-50);border:1px solid var(--blue-100);
  padding:6px 14px;border-radius:20px;max-width:190px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.nav-user .uname i{color:var(--blue)}
.nav-user .logout{font-size:13px;color:var(--muted);transition:color .25s}
.nav-user .logout:hover{color:var(--blue)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  border:none;cursor:pointer;font-size:13.5px;border-radius:8px;
  padding:9px 20px;transition:all .25s;font-weight:500;
}
.btn-primary{background:linear-gradient(135deg,var(--blue-500),var(--blue-700));color:#fff;box-shadow:0 4px 14px rgba(22,104,227,.26)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(22,104,227,.34)}
.btn-outline{background:#fff;border:1px solid var(--blue-300);color:var(--blue)}
.btn-outline:hover{background:var(--blue-50);border-color:var(--blue)}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--body)}
.btn-ghost:hover{border-color:var(--blue-300);color:var(--blue)}
.btn-lg{padding:14px 34px;font-size:15px;border-radius:10px}
.btn-block{width:100%}

/* ============================================================
   通用容器 / 标题
   ============================================================ */
.container{position:relative;z-index:1;width:90%;max-width:1180px;margin:0 auto;padding:calc(var(--nav-h) + 46px) 0 70px}
.container.narrow{max-width:1000px}
.page-title{
  font-size:34px;font-weight:700;color:var(--ink);text-align:center;line-height:1.35;letter-spacing:.5px;
}
.page-title span{color:var(--blue)}
.page-sub{color:var(--muted);text-align:center;margin:12px 0 48px;font-size:14.5px}
.section-title{font-size:26px;font-weight:700;color:var(--ink)}
.section-title span{color:var(--blue)}
.section-sub{color:var(--muted);font-size:14px;text-align:center;margin-top:8px;margin-bottom:44px}

.preview-section{position:relative;z-index:1;padding:0 0 64px}
.preview-header{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:28px;flex-wrap:wrap;gap:12px}
.preview-header h2{font-size:25px;font-weight:700;color:var(--ink)}
.preview-header h2 span{color:var(--blue)}
.preview-header a{color:var(--blue);font-size:14px;display:inline-flex;align-items:center;gap:6px;transition:gap .25s;font-weight:500}
.preview-header a:hover{gap:12px}

/* ============================================================
   首页 Hero（左文右图 + 工作台视觉 + 能力条）
   ============================================================ */
.hero{
  position:relative;z-index:1;min-height:100vh;
  display:flex;flex-direction:column;justify-content:center;
  padding:calc(var(--nav-h) + 44px) 5% 60px;
  background:
    radial-gradient(1000px 480px at 86% 6%, rgba(22,104,227,.10), transparent 60%),
    radial-gradient(760px 420px at 6% 90%, rgba(46,130,245,.09), transparent 55%),
    linear-gradient(180deg,#F7FAFF 0%,#FFFFFF 74%);
}
.hero-inner{
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
  width:100%;max-width:1180px;margin:0 auto;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;
  background:var(--blue-50);border:1px solid var(--blue-100);color:var(--blue-700);
  padding:7px 18px;border-radius:22px;font-size:12.5px;margin-bottom:26px;font-weight:500;
}
.hero-badge .pulse{width:8px;height:8px;background:var(--blue);border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(22,104,227,.5)}50%{box-shadow:0 0 0 8px rgba(22,104,227,0)}}
.hero h1{font-size:clamp(32px,4.4vw,52px);font-weight:800;color:var(--ink);line-height:1.3;margin-bottom:20px;letter-spacing:.5px}
.hero h1 span{color:var(--blue);display:inline-block}
.hero p.lead{font-size:16.5px;color:var(--body);max-width:560px;line-height:1.9;margin-bottom:34px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.stats-bar{display:flex;gap:46px;margin-top:48px;flex-wrap:wrap}
.stat-item{text-align:left}
.stat-num{font-size:36px;font-weight:700;color:var(--blue);line-height:1.2}
.stat-label{font-size:13px;color:var(--muted);margin-top:4px}

/* --- 工作台视觉 --- */
.hero-visual{position:relative}
.mock-window{
  background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;
  box-shadow:0 24px 60px rgba(16,52,110,.16);
}
.mock-bar{display:flex;align-items:center;gap:7px;padding:11px 16px;border-bottom:1px solid var(--line);background:#F8FAFE}
.mock-bar i{width:10px;height:10px;border-radius:50%;background:#E3EAF2}
.mock-bar i:nth-child(1){background:#FCA5A5}
.mock-bar i:nth-child(2){background:#FCD34D}
.mock-bar i:nth-child(3){background:#86EFAC}
.mock-url{margin-left:8px;font-size:11px;color:var(--muted);background:#fff;border:1px solid var(--line);border-radius:6px;padding:3px 12px;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mock-body{padding:18px;display:flex;flex-direction:column;gap:14px}
.mock-row{display:flex;gap:10px;align-items:flex-start}
.mock-avatar{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--blue-500),var(--blue-800));color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;flex-shrink:0}
.mock-chat{background:var(--blue-50);border:1px solid var(--blue-100);color:var(--blue-800);font-size:13px;padding:10px 14px;border-radius:4px 12px 12px 12px;line-height:1.65}
.mock-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.mock-grid img{width:100%;height:88px;object-fit:cover;border-radius:8px;border:1px solid var(--line)}
.mock-progress{height:6px;border-radius:4px;background:var(--blue-50);overflow:hidden}
.mock-progress i{display:block;height:100%;width:72%;border-radius:4px;background:linear-gradient(90deg,var(--blue-300),var(--blue));animation:mockLoad 3.2s ease-in-out infinite alternate}
@keyframes mockLoad{from{width:38%}to{width:88%}}
.mock-input{display:flex;align-items:center;justify-content:space-between;gap:10px;border:1px solid var(--line);border-radius:10px;padding:11px 14px;font-size:13px;color:var(--muted)}
.mock-input i{color:var(--blue)}
.float-card{
  position:absolute;display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);
  border-radius:12px;padding:11px 16px;font-size:13px;font-weight:600;color:var(--ink);
  box-shadow:var(--shadow-lg);animation:floatY 5s ease-in-out infinite;
}
.float-card i{color:var(--blue);font-size:16px}
.float-card small{display:block;font-size:11px;color:var(--muted);font-weight:400}
.fc-a{top:-18px;right:16px;animation-delay:.6s}
.fc-b{bottom:-16px;left:-18px}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* --- 能力条 --- */
.hero-strip{
  width:100%;max-width:1180px;margin:58px auto 0;
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;
}
.strip-item{
  display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);
  border-radius:12px;padding:15px 18px;box-shadow:var(--shadow-sm);transition:all .28s;
}
.strip-item:hover{border-color:var(--blue-300);box-shadow:var(--shadow-md);transform:translateY(-2px)}
.strip-item>i{
  width:38px;height:38px;border-radius:10px;background:var(--blue-50);color:var(--blue);
  display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0;border:1px solid var(--blue-100);
}
.strip-item b{display:block;color:var(--ink);font-size:14px}
.strip-item span{font-size:12px;color:var(--muted)}

/* ============================================================
   关于预览 / 关于页
   ============================================================ */
.about-preview{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.about-text p{color:var(--body);line-height:1.95;margin-bottom:18px;font-size:15px}
.about-visual{
  position:relative;height:340px;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-md);
}
.about-visual img{width:100%;height:100%;object-fit:cover}
.about-visual::after{content:'';position:absolute;inset:0;background:linear-gradient(145deg,rgba(10,63,150,.55),rgba(22,104,227,.35))}
.about-visual-content{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;padding:30px;text-align:center;z-index:2;color:#fff;
}
.about-visual-content i{font-size:46px;color:#fff;opacity:.95}
.about-visual-content h3{color:#fff;font-size:18px;font-weight:600}
.about-visual-content p{color:rgba(255,255,255,.88);font-size:13px;line-height:1.7}
.mini-cards{display:flex;gap:14px;margin-top:26px;flex-wrap:wrap}
.mini-card{
  background:var(--blue-50);border:1px solid var(--blue-100);border-radius:10px;
  padding:15px 18px;text-align:center;min-width:118px;
}
.mini-card i{color:var(--blue);font-size:21px;display:block;margin-bottom:7px}
.mini-card div{color:var(--ink);font-size:13px;font-weight:600}

.about-block{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:36px 38px;margin-bottom:28px;position:relative;overflow:hidden;box-shadow:var(--shadow-sm);
}
.about-block::before{content:'';position:absolute;top:0;left:0;width:3px;height:100%;background:linear-gradient(to bottom,var(--blue),var(--blue-100))}
.about-block h3{color:var(--blue);font-size:17.5px;margin-bottom:16px;display:flex;align-items:center;gap:10px;font-weight:700}
.about-block h3 i{font-size:19px}
.about-block p{color:var(--body);line-height:1.95;margin-bottom:12px;font-size:15px}
.about-block p:last-child{margin-bottom:0}

.ability-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(215px,1fr));gap:20px;margin-top:18px}
.ab-card{
  background:var(--bg-soft);border:1px solid var(--line);border-radius:10px;padding:26px 22px;text-align:center;
  transition:all .3s;
}
.ab-card:hover{background:var(--blue-50);border-color:var(--blue-300);transform:translateY(-3px);box-shadow:var(--shadow-md)}
.ab-card i{color:var(--blue);font-size:28px;margin-bottom:13px;display:block}
.ab-card h4{color:var(--ink);font-size:15px;margin-bottom:7px;font-weight:600}
.ab-card p{color:var(--muted);font-size:13px;line-height:1.65}

.timeline{position:relative;padding:10px 0 10px 30px;border-left:2px solid var(--blue-100);margin-top:22px}
.tl-item{margin-bottom:26px;position:relative}
.tl-item::before{content:'';position:absolute;left:-38px;top:5px;width:14px;height:14px;border-radius:50%;background:var(--blue-100)}
.tl-item::after{content:'';position:absolute;left:-34px;top:8px;width:8px;height:8px;border-radius:50%;background:var(--blue)}
.tl-year{color:var(--blue);font-weight:700;font-size:14.5px;font-family:'Orbitron',sans-serif}
.tl-title{color:var(--ink);font-size:16px;margin:3px 0;font-weight:600}
.tl-desc{color:var(--muted);font-size:13.5px;line-height:1.7}

.team-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-top:18px}
.team-card{background:var(--bg-soft);border:1px solid var(--line);border-radius:10px;padding:24px 20px;text-align:center;transition:all .3s}
.team-card:hover{border-color:var(--blue-300);box-shadow:var(--shadow-md)}
.team-avatar{
  width:68px;height:68px;border-radius:50%;background:linear-gradient(135deg,var(--blue-500),var(--blue-800));
  color:#fff;margin:0 auto 14px;display:flex;align-items:center;justify-content:center;font-size:25px;
}
.team-card h5{color:var(--ink);font-size:15px;margin-bottom:4px;font-weight:600}
.team-card .role{color:var(--blue);font-size:12.5px;margin-bottom:8px;font-weight:500}
.team-card p{color:var(--muted);font-size:12.5px;line-height:1.65}

/* ============================================================
   资讯
   ============================================================ */
.news-preview-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:22px}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:all .32s;cursor:pointer;position:relative;
}
.news-card::before{
  content:'';position:absolute;top:0;left:0;width:100%;height:3px;
  background:linear-gradient(90deg,var(--blue),var(--blue-300));transform:scaleX(0);transform-origin:left;
  transition:transform .35s;z-index:3;
}
.news-card:hover::before{transform:scaleX(1)}
.news-card:hover{transform:translateY(-5px);border-color:var(--blue-300);box-shadow:var(--shadow-md)}
.news-card .news-thumb{height:158px;overflow:hidden;position:relative;background:var(--blue-50)}
.news-card .news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.news-card:hover .news-thumb img{transform:scale(1.06)}
.news-card .news-body{padding:20px 22px 24px}
.news-meta{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted);margin-bottom:10px}
.news-tag{background:var(--blue-50);color:var(--blue-700);padding:3px 11px;border-radius:4px;font-size:11.5px;font-weight:600;border:1px solid var(--blue-100)}
.news-card h4{color:var(--ink);font-size:16px;margin-bottom:9px;line-height:1.55;transition:color .3s;font-weight:600}
.news-card:hover h4{color:var(--blue)}
.news-card p{color:var(--muted);font-size:13px;line-height:1.7}

.search-bar{display:flex;gap:12px;margin-bottom:32px;max-width:620px;margin-left:auto;margin-right:auto}
.search-bar input,.search-box input{
  flex:1;background:#fff;border:1px solid var(--line);color:var(--ink);
  padding:12px 18px;border-radius:9px;font-size:14px;outline:none;transition:border-color .25s,box-shadow .25s;
}
.search-bar input:focus,.search-box input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(22,104,227,.12)}
.search-bar button{padding:12px 24px;border-radius:9px}

.tabs,.filter-bar{display:flex;gap:10px;margin-bottom:38px;flex-wrap:wrap;justify-content:center}
.tab,.fbtn{
  padding:8px 20px;border:1px solid var(--line);color:var(--body);border-radius:22px;cursor:pointer;
  font-size:13px;transition:all .25s;background:#fff;
}
.tab:hover,.fbtn:hover{color:var(--blue);border-color:var(--blue-300);background:var(--blue-50)}
.tab.active,.fbtn.active{background:var(--blue);color:#fff;border-color:var(--blue);box-shadow:0 4px 12px rgba(22,104,227,.24)}

.news-list{display:flex;flex-direction:column;gap:18px}
.news-item{
  display:grid;grid-template-columns:210px 1fr;gap:24px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);padding:18px;cursor:pointer;
  transition:all .3s;align-items:center;box-shadow:var(--shadow-sm);
}
.news-item:hover{border-color:var(--blue-300);transform:translateX(5px);box-shadow:var(--shadow-md)}
.news-thumb{width:210px;height:124px;border-radius:9px;overflow:hidden;position:relative;flex-shrink:0;background:var(--blue-50)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.news-item:hover .news-thumb img{transform:scale(1.06)}
.news-thumb-tag{position:absolute;top:8px;left:8px;background:var(--blue);color:#fff;font-size:11px;padding:3px 9px;border-radius:4px;font-weight:500}
.news-body{flex:1;min-width:0}
.news-body h3{color:var(--ink);font-size:17px;margin-bottom:8px;line-height:1.55;transition:color .3s;font-weight:600}
.news-item:hover .news-body h3{color:var(--blue)}
.news-body p{color:var(--muted);font-size:13.5px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-stats{display:flex;gap:16px;margin-top:10px;font-size:12.5px;color:var(--muted)}
.news-st i{margin-right:4px;color:var(--blue-300)}

.pagination{display:flex;justify-content:center;gap:8px;margin-top:42px}
.pagination a{
  display:inline-flex;align-items:center;justify-content:center;min-width:38px;height:38px;padding:0 10px;
  border:1px solid var(--line);border-radius:8px;color:var(--body);font-size:14px;transition:all .25s;background:#fff;
}
.pagination a:hover,.pagination a.active{border-color:var(--blue);color:var(--blue);background:var(--blue-50);font-weight:600}

/* ============================================================
   课程
   ============================================================ */
.toolbar{display:flex;gap:12px;margin-bottom:32px;flex-wrap:wrap;align-items:center}
.search-box{flex:1;min-width:220px;position:relative}
.search-box i{position:absolute;left:15px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:14px}
.search-box input{width:100%;padding-left:42px}
.sort-select{
  background:#fff;border:1px solid var(--line);color:var(--body);padding:10px 14px;border-radius:9px;
  font-size:13px;outline:none;cursor:pointer;
}
.stats-bar-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:38px}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 18px;text-align:center;box-shadow:var(--shadow-sm);transition:all .28s}
.stat-card:hover{border-color:var(--blue-300);transform:translateY(-3px);box-shadow:var(--shadow-md)}
.stat-card .stat-num{font-size:30px;color:var(--blue);font-weight:700}
.stat-card .stat-label{color:var(--muted);font-size:13px;margin-top:4px}

.course-preview-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(262px,1fr));gap:22px}
.course-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:all .32s;display:flex;flex-direction:column;cursor:pointer;box-shadow:var(--shadow-sm);
}
.course-card:hover{transform:translateY(-6px);border-color:var(--blue-300);box-shadow:var(--shadow-lg)}
.course-img{height:178px;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;flex-shrink:0;background:var(--blue-50)}
.course-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.course-card:hover .course-img img{transform:scale(1.07)}
.course-img-overlay{
  position:absolute;inset:0;background:linear-gradient(to bottom,rgba(8,30,66,.10) 0%,rgba(8,30,66,.45) 100%);
  display:flex;align-items:flex-start;justify-content:space-between;padding:12px;pointer-events:none;
}
.badge-free,.badge-hot,.badge-new,.badge-pro,.badge-pay{font-size:11px;padding:3px 10px;border-radius:4px;font-weight:600}
.badge-free{background:var(--green);color:#fff}
.badge-hot{background:var(--blue);color:#fff}
.badge-new{background:var(--amber);color:#fff}
.badge-pro{background:var(--purple);color:#fff}
.badge-pay{background:var(--blue-700);color:#fff}
.students{color:#fff;font-size:11px;text-shadow:0 1px 3px rgba(0,0,0,.6);display:flex;align-items:center;gap:4px}

.course-body{padding:20px;flex:1;display:flex;flex-direction:column}
.course-body h4{color:var(--ink);font-size:16px;margin-bottom:8px;line-height:1.45;font-weight:600}
.course-body p{color:var(--muted);font-size:13px;line-height:1.65;margin-bottom:12px;flex:1}
.course-meta-row{display:flex;gap:8px;margin-bottom:14px;flex-wrap:wrap}
.cmeta{font-size:11.5px;padding:3px 10px;border-radius:4px;background:var(--bg-soft);color:var(--muted)}
.cmeta-type{background:var(--blue-50);color:var(--blue-700);border:1px solid var(--blue-100)}
.cmeta-level-1{background:rgba(22,163,74,.10);color:#15803D}
.cmeta-level-2{background:rgba(245,158,11,.12);color:#B45309}
.cmeta-level-3{background:rgba(124,58,237,.10);color:#6D28D9}
.course-footer{display:flex;justify-content:space-between;align-items:center;margin-top:auto}
.course-price{color:var(--blue);font-weight:700;font-size:18px;font-family:'Orbitron',sans-serif}
.course-price.free{font-size:13.5px;color:var(--green);font-family:inherit}
.course-btn{padding:8px 16px;border-radius:7px;font-size:13px;cursor:pointer;border:none;transition:all .25s;font-weight:500}
.course-btn-buy{background:linear-gradient(135deg,var(--blue-500),var(--blue-700));color:#fff}
.course-btn-buy:hover{box-shadow:0 6px 16px rgba(22,104,227,.3)}
.course-btn-free{background:rgba(22,163,74,.10);color:var(--green);border:1px solid rgba(22,163,74,.3)}
.course-btn-free:hover{background:rgba(22,163,74,.18)}
.course-btn-learning{background:var(--blue-50);color:var(--blue);border:1px solid var(--blue-100)}
.course-btn-learning:hover{background:var(--blue-100)}

.empty-state{grid-column:1/-1;text-align:center;padding:80px 20px;color:var(--muted)}
.empty-state i{font-size:46px;margin-bottom:14px;color:var(--blue-100)}

/* 学习页 */
.lesson-page{display:none}
.lesson-header{display:flex;align-items:center;gap:18px;margin-bottom:26px;flex-wrap:wrap}
.lesson-header h2{color:var(--ink);font-size:23px;font-weight:700}
.lesson-video{
  background:linear-gradient(135deg,var(--blue-800),var(--blue));border-radius:var(--radius);height:380px;
  display:flex;align-items:center;justify-content:center;margin-bottom:30px;position:relative;overflow:hidden;
}
.lesson-video .play-icon{font-size:62px;color:#fff;opacity:.9;z-index:2}
.lesson-video .video-bg{position:absolute;inset:0;opacity:.35;background-size:cover;background-position:center}
.lesson-list{display:flex;flex-direction:column;gap:11px}
.lesson-item{
  background:#fff;border:1px solid var(--line);padding:15px 20px;border-radius:9px;
  display:flex;align-items:center;gap:15px;cursor:pointer;transition:all .28s;
}
.lesson-item:hover,.lesson-item.active{border-color:var(--blue-300);background:var(--blue-50)}
.lesson-item.active{border-left:3px solid var(--blue)}
.lesson-num{
  width:30px;height:30px;border-radius:50%;background:var(--blue-50);color:var(--blue);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex-shrink:0;
  border:1px solid var(--blue-100);
}
.lesson-info{flex:1}
.lesson-info h5{color:var(--ink);font-size:14px;margin-bottom:2px;font-weight:600}
.lesson-info span{color:var(--muted);font-size:12px}
.lesson-duration{color:var(--muted);font-size:12.5px}

/* ============================================================
   案例
   ============================================================ */
.cases-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(358px,1fr));gap:26px}
.cases-preview-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:24px}
.case-card{
  position:relative;border-radius:14px;overflow:hidden;border:1px solid var(--line);
  height:320px;cursor:pointer;transition:all .38s;box-shadow:var(--shadow-sm);background:var(--blue-50);
}
.case-card:hover{transform:translateY(-6px);border-color:var(--blue-300);box-shadow:var(--shadow-lg)}
.case-bg{position:absolute;inset:0;background-size:cover;background-position:center;transition:transform .6s}
.case-card:hover .case-bg{transform:scale(1.05)}
.case-overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(6,24,56,.94) 0%,rgba(6,24,56,.55) 45%,rgba(6,24,56,.12) 100%)}
.case-content{position:absolute;bottom:0;left:0;right:0;padding:28px;color:#fff}
.case-tags{margin-bottom:11px;display:flex;gap:8px;flex-wrap:wrap}
.case-tag,.ctag{font-size:11px;padding:3px 11px;border-radius:4px}
.case-tag-industry,.ctag-industry{background:rgba(255,255,255,.16);color:#E8F1FF}
.case-tag-tech,.ctag-tech{background:var(--blue);color:#fff;font-weight:600}
.case-card h3,.case-card h4{color:#fff;font-size:19px;margin-bottom:8px;line-height:1.35;font-weight:600}
.case-card p,.case-desc{color:rgba(255,255,255,.82);font-size:13px;line-height:1.65;margin-bottom:13px}
.case-desc{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.case-stats{display:flex;gap:24px}
.case-stats .num,.cs-item .num{color:#8FC0FF;font-family:'Orbitron',sans-serif;font-size:19px;font-weight:700}
.case-stats .label,.cs-item .lbl{color:rgba(255,255,255,.7);font-size:11.5px;margin-top:2px}
.case-stats{padding-top:14px;border-top:1px solid rgba(255,255,255,.16)}

/* ============================================================
   页脚
   ============================================================ */
footer{
  position:relative;z-index:1;background:#fff;border-top:1px solid var(--line);
  padding:52px 5% 28px;margin-top:30px;
}
.footer-brandbar{
  max-width:1180px;margin:0 auto 34px;padding-bottom:24px;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
}
.footer-brandbar .logo{color:var(--blue)}
.footer-brandbar .brand-slogan{color:var(--muted);font-size:13px}
.footer-grid{
  display:grid;grid-template-columns:1.35fr 1fr 1.15fr 1fr;gap:36px;max-width:1180px;margin:0 auto;
}
.footer-col h5{color:var(--ink);font-size:14px;margin-bottom:16px;font-weight:700}
.footer-col a{
  display:block;color:var(--muted);font-size:13px;margin-bottom:11px;transition:color .25s,transform .25s;
}
.footer-col a i{margin-right:6px;color:var(--blue-300);width:14px;text-align:center}
.footer-col a:hover{color:var(--blue);transform:translateX(3px)}
.footer-col a.report-link{color:var(--blue);font-weight:600}
.footer-col a.report-link:hover{text-decoration:underline}
.footer-bottom{
  text-align:center;color:var(--muted);font-size:12.5px;margin:38px auto 0;padding-top:22px;
  border-top:1px solid var(--line);max-width:1180px;
}
.footer-bottom a{color:var(--muted);margin:0 6px;transition:color .25s}
.footer-bottom a:hover{color:var(--blue)}
.footer-bottom .co-name{color:var(--ink);font-weight:600}

/* ============================================================
   弹窗（统一）
   ============================================================ */
.sz-modal{
  position:fixed;inset:0;background:rgba(9,27,58,.55);z-index:9999;
  display:flex !important;align-items:center;justify-content:center;padding:24px;
  backdrop-filter:blur(3px);-webkit-backdrop-filter:blur(3px);
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;
}
.sz-modal.show{opacity:1;visibility:visible}
.sz-modal-box{
  background:#fff;border-radius:14px;width:100%;max-width:440px;max-height:86vh;overflow-y:auto;
  position:relative;box-shadow:0 24px 60px rgba(6,24,56,.28);
  transform:translateY(14px) scale(.98);transition:transform .28s ease;padding:34px 32px;
}
.sz-modal.show .sz-modal-box{transform:translateY(0) scale(1)}
.sz-modal-box.wide{max-width:780px;padding:0}
.sz-modal-close{
  position:absolute;top:14px;right:18px;width:32px;height:32px;border-radius:50%;
  border:none;background:var(--bg-soft);color:var(--muted);font-size:20px;line-height:1;cursor:pointer;
  transition:all .25s;z-index:10;
}
.sz-modal-close:hover{background:var(--blue-50);color:var(--blue)}
.sz-modal-box h3{color:var(--ink);font-size:20px;text-align:center;font-weight:700;margin-bottom:6px}
.sz-modal-box .modal-sub{color:var(--muted);font-size:13px;text-align:center;margin-bottom:24px}
.sz-modal-foot{text-align:center;color:var(--muted);font-size:13px;margin-top:16px}
.sz-modal-foot a{color:var(--blue);font-weight:600}

/* 文档弹窗 */
.doc-head{padding:28px 34px 18px;border-bottom:1px solid var(--line);position:sticky;top:0;background:#fff;z-index:5;border-radius:14px 14px 0 0}
.doc-head h2{color:var(--ink);font-size:21px;font-weight:700}
.doc-head .doc-meta{color:var(--muted);font-size:12.5px;margin-top:6px}
.doc-body{padding:24px 34px 34px}
.doc-body h3{color:var(--blue);font-size:16px;margin:24px 0 10px;font-weight:700}
.doc-body h3:first-child{margin-top:0;text-align:center;color:var(--ink);font-size:19px}
.doc-body p{color:var(--body);font-size:14px;line-height:1.95;margin-bottom:12px;text-align:justify}
.doc-body p.doc-sign{text-align:right;color:var(--ink);font-weight:600;margin-bottom:4px}
.doc-body p.doc-sign.date{font-weight:400;color:var(--body)}

/* 表单 */
.form-group{margin-bottom:16px}
.form-group label{display:block;color:var(--ink);font-size:13px;margin-bottom:6px;font-weight:600}
.form-group label .req{color:var(--blue)}
.form-group input{
  width:100%;background:#fff;border:1px solid var(--line);color:var(--ink);
  padding:11px 14px;border-radius:8px;font-size:14px;outline:none;
  transition:border-color .25s,box-shadow .25s;
}
.form-group input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(22,104,227,.12)}
.form-group input.err{border-color:#E5484D;box-shadow:0 0 0 3px rgba(229,72,77,.12)}
.form-err{color:#E5484D;font-size:12px;margin-top:5px;min-height:16px;display:block}
.form-inline{display:flex;gap:10px}
.form-inline input{flex:1}
.btn-code{
  width:118px;flex-shrink:0;background:#fff;border:1px solid var(--blue-300);color:var(--blue);
  border-radius:8px;cursor:pointer;font-size:13px;transition:all .25s;
}
.btn-code:hover:not(:disabled){background:var(--blue-50)}
.btn-code:disabled{color:var(--muted);border-color:var(--line);cursor:not-allowed}
.agree-line{font-size:12.5px;color:var(--muted);text-align:center;margin-top:14px;line-height:1.7}
.agree-line a{color:var(--blue)}

/* 支付弹窗 */
.pay-course{text-align:center;margin-bottom:20px;padding:18px;background:var(--blue-50);border-radius:10px;border:1px solid var(--blue-100)}
.pay-course .name{color:var(--ink);font-size:15px;font-weight:600;margin-bottom:6px}
.pay-course .amount{font-family:'Orbitron',sans-serif;font-size:32px;color:var(--blue);font-weight:700}
.pay-methods{display:flex;gap:10px;margin-bottom:22px}
.pay-method{
  flex:1;padding:12px 8px;text-align:center;border:1px solid var(--line);border-radius:9px;
  cursor:pointer;transition:all .25s;color:var(--muted);font-size:12.5px;
}
.pay-method i{display:block;font-size:22px;margin-bottom:5px}
.pay-method.active{border-color:var(--blue);color:var(--blue);background:var(--blue-50);font-weight:600}

/* 课程/案例详情弹窗 */
.detail-cover{height:190px;border-radius:14px 14px 0 0;position:relative;overflow:hidden;background:var(--blue-50)}
.detail-cover img{width:100%;height:100%;object-fit:cover}
.detail-body{padding:26px 32px 32px}
.detail-body h2{color:var(--ink);font-size:21px;margin-bottom:10px;font-weight:700}
.detail-meta{display:flex;gap:10px;margin-bottom:18px;flex-wrap:wrap}
.detail-meta span{font-size:12px;padding:4px 12px;border-radius:5px;background:var(--blue-50);color:var(--blue-700);border:1px solid var(--blue-100)}
.detail-teacher{display:flex;align-items:center;gap:14px;padding:14px 16px;background:var(--bg-soft);border-radius:9px;margin-bottom:20px}
.detail-teacher .ta{width:46px;height:46px;border-radius:50%;background:linear-gradient(135deg,var(--blue-500),var(--blue-800));display:flex;align-items:center;justify-content:center;font-size:20px;color:#fff;flex-shrink:0}
.detail-teacher .tn{color:var(--ink);font-size:14.5px;font-weight:600}
.detail-teacher .tt{color:var(--muted);font-size:12.5px}
.detail-section{margin-bottom:20px}
.detail-section h4{color:var(--blue);font-size:14px;margin-bottom:10px;font-weight:700}
.detail-section p{color:var(--body);font-size:13.5px;line-height:1.85}
.detail-section ul li{color:var(--body);font-size:13.5px;padding:5px 0;display:flex;align-items:center;gap:8px}
.detail-section ul li::before{content:'\25B6';color:var(--blue-300);font-size:9px}
.detail-actions{display:flex;gap:12px;margin-top:24px}
.modal-hero{height:220px;background-size:cover;background-position:center;position:relative;background-color:var(--blue-50)}
.modal-hero::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(6,24,56,.55),transparent)}
.modal-stats{
  display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:22px 0;padding:18px;
  background:var(--blue-50);border-radius:10px;border:1px solid var(--blue-100);
}
.mstat{text-align:center}
.mstat .n{color:var(--blue);font-family:'Orbitron',sans-serif;font-size:22px;font-weight:700}
.mstat .l{color:var(--muted);font-size:12px;margin-top:3px}
.modal-body{padding:24px 32px 32px}
.modal-body h2{color:var(--ink);font-size:22px;margin-bottom:8px;font-weight:700}
.modal-body .sub{color:var(--blue);font-size:13px;margin-bottom:18px}
.modal-body h4{color:var(--blue);font-size:14.5px;margin:20px 0 10px;font-weight:700}
.modal-body p{color:var(--body);line-height:1.9;font-size:14px;margin-bottom:12px}

/* ============================================================
   Toast
   ============================================================ */
#toast{
  position:fixed;bottom:44px;left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--blue);color:#fff;padding:12px 28px;border-radius:9px;font-size:14px;
  z-index:100000;opacity:0;transition:all .3s;pointer-events:none;
  box-shadow:0 10px 30px rgba(22,104,227,.36);max-width:86vw;text-align:center;
}

/* ============================================================
   登录页
   ============================================================ */
.auth-wrap{
  position:relative;z-index:1;min-height:100vh;display:flex;align-items:center;justify-content:center;
  padding:calc(var(--nav-h) + 40px) 5% 60px;
  background:linear-gradient(180deg,#F7FAFF 0%,#FFFFFF 70%);
}
.auth-card{
  width:100%;max-width:420px;background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:38px 36px;box-shadow:var(--shadow-lg);
}
.auth-card h2{color:var(--ink);font-size:23px;text-align:center;font-weight:700;margin-bottom:6px}
.auth-card .auth-sub{color:var(--muted);font-size:13.5px;text-align:center;margin-bottom:26px}
.auth-links{display:flex;justify-content:space-between;font-size:13px;color:var(--muted);margin-top:18px}
.auth-links a{color:var(--blue);font-weight:600}
.auth-links a:hover{text-decoration:underline}

/* ============================================================
   响应式
   ============================================================ */
@media(max-width:1080px){
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media(max-width:900px){
  .nav-links{display:none}
  .about-preview{grid-template-columns:1fr}
  .hero-inner{grid-template-columns:1fr;gap:44px}
  .hero-visual{max-width:580px;margin:0 auto;width:100%}
  .hero-strip{grid-template-columns:1fr 1fr;margin-top:46px}
  .hero h1{font-size:32px}
  .stats-bar{gap:28px}
  .stat-num{font-size:28px}
  .page-title{font-size:26px}
  .news-item{grid-template-columns:1fr}
  .news-thumb{width:100%;height:170px}
  .cases-grid{grid-template-columns:1fr}
  .course-preview-grid{grid-template-columns:1fr 1fr}
  .stats-bar-grid{grid-template-columns:repeat(2,1fr)}
  .lesson-video{height:240px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:600px){
  .footer-grid{grid-template-columns:1fr}
  .hero{min-height:auto;padding:calc(var(--nav-h) + 26px) 5% 48px}
  .hero-actions{flex-direction:column;width:100%}
  .hero-actions .btn{width:100%}
  .hero-strip{grid-template-columns:1fr;gap:10px;margin-top:34px}
  .fc-a{right:0;top:-12px}
  .fc-b{left:0;bottom:-12px}
  .mock-grid{grid-template-columns:1fr 1fr}
  .mock-grid img:last-child{display:none}
  .course-preview-grid{grid-template-columns:1fr}
  .toolbar{flex-direction:column}
  .filter-bar{justify-content:center}
  .sz-modal-box{padding:28px 20px}
  .doc-head{padding:22px 20px 14px}
  .doc-body{padding:18px 20px 26px}
  .modal-stats{grid-template-columns:1fr 1fr}
  .logo-text b{font-size:14px}
  .modal-body{padding:18px 20px 24px}
  .detail-body{padding:20px 20px 26px}
}