/*
 Theme Name: 子城AI
 Theme URI: https://zicheng-ai.com/
 Description: 子城AI（贺子城）· 星火之光AI培训讲师个人官网。星火之光AI默认VI（靛蓝#2D326B + 珊瑚#FF6B5B），响应式，GEO结构化数据就绪。
 Author: 星火之光AI
 Author URI: https://sparklight-ai.com/
 Version: 1.0.0
 Requires at least: 6.0
 Tested up to: 6.7
 Tags: 个人IP, AI培训, 响应式, 单页
 Text Domain: zicheng-ai
*/

  :root{
    --indigo:#2D326B; --coral:#FF6B5B; --deep-coral:#C9473A;
    --ink:#1E2238; --warm:#FBF8F4;
    --indigo-soft:#EFF0FA; --coral-soft:#FFF0EC;
    --gray:#6E7181; --line:#ECE9E4;
    --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{font-family:var(--font);background:var(--warm);color:var(--ink);line-height:1.75;-webkit-font-smoothing:antialiased}
  a{color:var(--indigo);text-decoration:none}
  .wrap{max-width:1080px;margin:0 auto;padding:0 32px}

  /* ---------- 顶部导航 ---------- */
  .topbar{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:60}
  .topbar .wrap{display:flex;align-items:center;justify-content:space-between;padding:14px 32px}
  .brandmark{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--indigo)}
  .brandmark .cn{font-size:22px}
  .brandmark .ai{color:var(--coral)}
  .brandmark small{display:block;font-size:10px;letter-spacing:2px;color:var(--gray);font-weight:600}
  .menu{display:flex;gap:6px;flex-wrap:wrap}
  .menu a{font-size:14px;font-weight:600;color:var(--gray);padding:8px 13px;border-radius:8px;transition:.2s}
  .menu a:hover{background:var(--indigo-soft);color:var(--indigo)}
  .menu a.cta{background:var(--coral);color:#fff}
  .menu a.cta:hover{background:var(--deep-coral);color:#fff}

  /* ---------- Hero ---------- */
  .hero{background:linear-gradient(135deg,var(--indigo) 0%,#3a3f7e 100%);color:#fff;padding:110px 0 90px;position:relative;overflow:hidden}
  .hero::before{content:"";position:absolute;right:-140px;top:-140px;width:460px;height:460px;border-radius:50%;background:radial-gradient(circle,rgba(255,107,91,.4),transparent 65%)}
  .hero::after{content:"";position:absolute;left:-100px;bottom:-160px;width:340px;height:340px;border-radius:50%;background:radial-gradient(circle,rgba(255,107,91,.18),transparent 70%)}
  .hero .wrap{position:relative;z-index:1}
  .hero .tag{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);color:#fff;font-size:13px;font-weight:600;padding:7px 16px;border-radius:20px;margin-bottom:24px}
  .hero .tag i{width:8px;height:8px;border-radius:50%;background:var(--coral);display:inline-block}
  .hero h1{font-size:64px;font-weight:900;letter-spacing:1px;line-height:1.1;margin-bottom:16px}
  .hero h1 .ai{color:var(--coral)}
  .hero .role{font-size:23px;font-weight:500;color:#C9CCE0;margin-bottom:14px}
  .hero .slogan{font-size:17px;color:#9DA1C4;line-height:1.9;max-width:640px}
  .hero .slogan b{color:var(--coral);font-weight:700}
  .hero .btns{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
  .hero .btns a{display:inline-block;padding:13px 30px;border-radius:10px;font-size:15px;font-weight:700;transition:.2s}
  .hero .btns .main{background:var(--coral);color:#fff;box-shadow:0 8px 22px rgba(255,107,91,.35)}
  .hero .btns .main:hover{background:var(--deep-coral)}
  .hero .btns .ghost{border:1.5px solid rgba(255,255,255,.4);color:#fff}
  .hero .btns .ghost:hover{border-color:var(--coral);color:var(--coral)}
  .hero .stats{display:flex;gap:44px;margin-top:52px;flex-wrap:wrap}
  .hero .stats .st b{display:block;font-size:34px;font-weight:900;color:var(--coral)}
  .hero .stats .st span{font-size:13px;color:#9DA1C4}

  /* ---------- 章节 ---------- */
  section{padding:72px 0;border-bottom:1px solid var(--line)}
  .eyebrow{font-size:13px;font-weight:700;letter-spacing:2px;color:var(--coral);margin-bottom:10px}
  h2.sec{font-size:23px;font-weight:800;color:#fff;background:var(--indigo);border-left:6px solid var(--coral);padding:14px 22px;border-radius:0 12px 12px 0;margin-bottom:16px}
  .secdesc{font-size:15px;color:var(--gray);max-width:760px;margin-bottom:38px}

  /* 双线卡片 */
  .duo{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-bottom:22px}
  .line-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:32px;position:relative;overflow:hidden}
  .line-card::before{content:"";position:absolute;left:0;top:0;width:6px;height:100%;background:var(--coral)}
  .line-card.cn-line::before{background:var(--indigo)}
  .line-card .no{font-size:12px;font-weight:800;letter-spacing:3px;color:var(--coral);margin-bottom:8px}
  .line-card.cn-line .no{color:var(--indigo)}
  .line-card h3{font-size:24px;font-weight:800;color:var(--indigo);margin-bottom:6px}
  .line-card .sub{font-size:14px;color:var(--gray);margin-bottom:16px}
  .line-card ul{list-style:none}
  .line-card ul li{font-size:14.5px;color:var(--ink);padding:9px 0;border-bottom:1px dashed var(--line)}
  .line-card ul li:last-child{border-bottom:none}
  .line-card ul li b{color:var(--indigo)}

  /* 服务卡片 */
  .svc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
  .svc{background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px;position:relative;overflow:hidden;transition:.2s}
  .svc:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(45,50,107,.1)}
  .svc .ico{width:52px;height:52px;border-radius:14px;background:var(--indigo-soft);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:16px}
  .svc .en{font-size:11px;font-weight:800;letter-spacing:2px;color:var(--coral)}
  .svc h3{font-size:20px;font-weight:800;color:var(--indigo);margin:4px 0 8px}
  .svc p{font-size:14px;color:var(--gray)}
  .svc .hook{margin-top:14px;display:inline-block;background:var(--coral-soft);color:var(--deep-coral);font-size:12.5px;font-weight:700;padding:6px 14px;border-radius:20px}

  /* 历程时间线 */
  .tl{position:relative;padding-left:34px}
  .tl::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:var(--line)}
  .tl-item{position:relative;margin-bottom:36px}
  .tl-item:last-child{margin-bottom:0}
  .tl-item::before{content:"";position:absolute;left:-31px;top:7px;width:14px;height:14px;border-radius:50%;background:var(--coral);border:3px solid #fff;box-shadow:0 0 0 2px var(--coral)}
  .tl-item .yr{font-size:13px;font-weight:800;letter-spacing:1.5px;color:var(--coral)}
  .tl-item h3{font-size:19px;font-weight:800;color:var(--indigo);margin:4px 0 6px}
  .tl-item p{font-size:14px;color:var(--gray);max-width:720px}
  .tl-item p b{color:var(--ink)}

  /* 工作之外 + 未来 */
  .hobby{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:24px}
  .hobby span{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 26px;font-size:15px;font-weight:700;color:var(--indigo);display:flex;align-items:center;gap:8px}
  .future{display:grid;grid-template-columns:1fr 1fr;gap:20px}
  .future .card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px;position:relative;overflow:hidden}
  .future .card::before{content:"";position:absolute;left:0;top:0;width:6px;height:100%;background:var(--coral)}
  .future .lab{font-size:12px;font-weight:800;letter-spacing:2px;color:var(--coral);margin-bottom:8px}
  .future h3{font-size:20px;font-weight:800;color:var(--indigo);margin-bottom:8px}
  .future p{font-size:14px;color:var(--gray)}

  /* 内容栏目 */
  .cols{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
  .col-c{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px 20px;text-align:center}
  .col-c .cn{font-size:17px;font-weight:800;color:var(--indigo);margin-bottom:6px}
  .col-c .en{font-size:11px;font-weight:700;color:var(--coral);letter-spacing:1px;margin-bottom:10px}
  .col-c p{font-size:12.5px;color:var(--gray);line-height:1.7}

  /* 联系 */
  .contact{background:var(--indigo);border-radius:22px;color:#fff;padding:52px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;position:relative;overflow:hidden}
  .contact::after{content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(255,107,91,.35),transparent 65%)}
  .contact .left{flex:1;min-width:280px;position:relative;z-index:1}
  .contact h3{font-size:28px;font-weight:900;margin-bottom:10px}
  .contact h3 span{color:var(--coral)}
  .contact p{font-size:14.5px;color:#C9CCE0;line-height:1.9}
  .contact .right{position:relative;z-index:1;display:flex;flex-direction:column;gap:12px}
  .contact .phone{font-size:30px;font-weight:900;color:var(--coral);letter-spacing:1px}
  .contact .phone small{display:block;font-size:12px;color:#9DA1C4;font-weight:600;letter-spacing:2px;margin-bottom:4px}
  .contact .site{font-size:15px;font-weight:700;color:#fff}
  .contact .site small{display:block;font-size:11px;color:#9DA1C4;font-weight:600;letter-spacing:1px}

  /* 页脚 */
  footer{background:var(--ink);color:#9DA1C4;text-align:center;padding:42px 24px;font-size:13px;line-height:2}
  footer b{color:#fff}
  footer .spark{color:var(--coral);font-weight:800;letter-spacing:2px;font-size:14px}
  footer a{color:#C9CCE0}
  .foot-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:8px}
  .foot-bottom a{color:#9DA1C4;font-size:12px;border-bottom:1px dashed rgba(157,161,196,.5)}
  .foot-bottom a:hover{color:var(--coral);border-color:var(--coral)}

  /* ---------- 悬浮回到顶部 ---------- */
  #toTop{position:fixed;right:28px;bottom:32px;width:50px;height:50px;border-radius:50%;border:none;background:var(--coral);color:#fff;font-size:22px;font-weight:800;cursor:pointer;box-shadow:0 8px 24px rgba(255,107,91,.42);opacity:0;visibility:hidden;transform:translateY(16px);transition:.3s;z-index:80;display:flex;align-items:center;justify-content:center}
  #toTop:hover{background:var(--deep-coral);transform:translateY(-2px) scale(1.06)}
  #toTop.show{opacity:1;visibility:visible;transform:translateY(0)}

  /* ---------- 悬浮联系信息（右侧三按钮） ---------- */
  .fab-col{position:fixed;right:20px;bottom:100px;z-index:80;display:flex;flex-direction:column;gap:12px;align-items:flex-end}
  .fab-item{position:relative;width:52px;height:52px;border-radius:50%;border:none;background:var(--indigo);color:#fff;font-size:22px;cursor:pointer;box-shadow:0 8px 24px rgba(45,50,107,.42);display:flex;align-items:center;justify-content:center;transition:.2s}
  .fab-item:hover{background:var(--coral);transform:scale(1.06)}
  .fab-pop{position:absolute;right:64px;bottom:0;min-width:170px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;box-shadow:0 16px 44px rgba(45,50,107,.2);opacity:0;visibility:hidden;transform:translateX(10px);transition:.25s;pointer-events:none}
  .fab-item:hover .fab-pop,.fab-item.open .fab-pop{opacity:1;visibility:visible;transform:translateX(0);pointer-events:auto}
  .fab-pop .fab-title{font-size:14px;font-weight:800;color:var(--indigo);margin-bottom:8px}
  .fab-pop .fab-row{font-size:14px;color:var(--ink)}
  .fab-pop .fab-row b{color:var(--coral)}
  .fab-pop .qr{text-align:center}
  .fab-pop .qr img{width:150px;border-radius:10px;border:1px solid var(--line);background:#fff}
  .fab-pop .qr span{display:block;font-size:12px;color:var(--gray);margin-top:6px;font-weight:600}

  @media(max-width:860px){
    .hero h1{font-size:48px}
    .duo,.svc-grid,.future{grid-template-columns:1fr}
    .cols{grid-template-columns:repeat(2,1fr)}
    .topbar .wrap{flex-direction:column;gap:10px}
    .contact{padding:40px 28px}
  }
  @media(max-width:560px){
    .wrap{padding:0 18px}
    .hero{padding:72px 0 60px}
    .hero h1{font-size:38px}
    .hero .role{font-size:18px}
    .hero .stats{gap:26px}
    .hero .stats .st b{font-size:26px}
    h2.sec{font-size:20px;padding:12px 16px}
    section{padding:52px 0}
    .cols{grid-template-columns:1fr}
    .menu{justify-content:center}
    .contact .phone{font-size:25px}
    .tl{padding-left:28px}
  }
  @media(max-width:390px){
    .hero h1{font-size:32px}
    .hobby span{padding:12px 16px;font-size:13.5px}
    .contact h3{font-size:23px}
  }
  @media(max-width:560px){
    #toTop{right:16px;bottom:20px;width:44px;height:44px;font-size:20px}
    .fab-col{right:16px;bottom:80px;gap:10px}
    .fab-item{width:46px;height:46px;font-size:20px}
    .fab-pop{right:56px;min-width:150px;padding:12px 14px}
    .fab-pop .qr img{width:130px}
  }