:root{
    --main:#0D1B2A;
    --aux:#2EC4B6;
    --bg:#E0E1DD;
    --accent:#2EC4B6;
    --card:#ffffff;
    --text:#0D1B2A;
    --muted:#4a5568;
    --radius:16px;
    --shadow:0 10px 28px rgba(13,27,42,.16), 0 2px 6px rgba(13,27,42,.10);
    --shadow-hover:0 16px 38px rgba(13,27,42,.24), 0 4px 10px rgba(46,196,182,.20);
    --gap:18px;
    --section-gap:56px;
  }
  *{box-sizing:border-box;}
  html{font-size:16px;-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    font-size:16px;
    line-height:1.75;
  }
  img{width:100%;height:100%;object-fit:cover;display:block;}
  a{color:var(--main);text-decoration:none;}
  a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
  .container{max-width:1240px;margin:0 auto;padding:0 20px;}
  h1,h2,h3{margin:0;line-height:1.3;font-weight:800;letter-spacing:.2px;}
  p{margin:0 0 14px;}
  section{margin-bottom:var(--section-gap);}

  /* header */
  .site-header{position:sticky;top:0;z-index:50;background:rgba(224,225,221,.92);backdrop-filter:blur(8px);border-bottom:1px solid rgba(13,27,42,.12);}
  .header-inner{display:flex;align-items:center;gap:16px;min-height:64px;flex-wrap:wrap;padding:8px 0;}
  .brand{font-weight:900;font-size:20px;color:var(--main);letter-spacing:1px;display:flex;align-items:center;gap:8px;}
  .brand .dot{width:12px;height:12px;border-radius:50%;background:var(--aux);box-shadow:0 0 0 4px rgba(46,196,182,.22);}
  .brand small{display:block;font-size:12.5px;font-weight:500;color:var(--muted);letter-spacing:0;}
  .nav{display:flex;gap:18px;flex-wrap:wrap;margin-left:6px;}
  .nav a{position:relative;font-size:14px;font-weight:600;color:var(--main);padding:6px 2px;}
  .nav a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--accent);transition:right .25s;}
  .nav a:hover::after,.nav a:focus-visible::after{right:0;}
  .search-wrap{margin-left:auto;display:flex;gap:8px;}
  .search-wrap input{height:42px;padding:0 14px;border-radius:12px;border:1px solid rgba(13,27,42,.2);background:#fff;font-size:14px;min-width:180px;color:var(--text);}
  .btn{display:inline-flex;align-items:center;justify-content:center;height:42px;padding:0 20px;border-radius:12px;font-size:14px;font-weight:700;cursor:pointer;border:none;line-height:1;transition:transform .15s,background .2s,box-shadow .2s;font-family:inherit;}
  .btn-primary{background:var(--main);color:#fff;box-shadow:var(--shadow);}
  .btn-primary:hover{background:#16283c;transform:translateY(-1px);}
  .btn-ghost{background:transparent;color:var(--main);border:1px solid rgba(13,27,42,.3);}
  .btn-ghost:hover{background:rgba(46,196,182,.14);border-color:var(--aux);}
  .btn-accent{background:var(--aux);color:#06231f;}
  .btn-accent:hover{background:#26ac9f;}
  .btn.active{background:var(--accent);color:#06231f;box-shadow:0 0 0 3px rgba(46,196,182,.28);}
  .menu-toggle{display:none;background:var(--main);color:#fff;border-radius:12px;width:42px;height:42px;font-size:18px;border:none;cursor:pointer;}

  /* breadcrumb */
  .breadcrumb{font-size:13.5px;color:var(--muted);padding:18px 0 0;display:flex;flex-wrap:wrap;gap:6px;align-items:center;}
  .breadcrumb a{color:var(--main);font-weight:600;}
  .breadcrumb span[aria-current]{color:var(--aux);font-weight:700;}

  /* hero stacked */
  .hero{margin-top:18px;position:relative;border-radius:24px;overflow:hidden;background:linear-gradient(135deg,#0D1B2A 0%,#12324a 55%,#2EC4B6 140%);box-shadow:var(--shadow);}
  .hero-banner{position:relative;height:220px;overflow:hidden;}
  .hero-banner img{filter:saturate(1.1);}
  .hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,27,42,.25) 0%,rgba(13,27,42,.85) 100%);}
  .hero-body{position:relative;padding:24px 22px 34px;text-align:center;color:#f2f6f6;}
  .hero-tags{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-bottom:16px;}
  .chip{display:inline-block;font-size:13px;font-weight:700;padding:4px 12px;border-radius:999px;background:rgba(46,196,182,.18);color:#bff3ec;border:1px solid rgba(46,196,182,.45);}
  .hero h1{font-size:32px;margin-bottom:16px;color:#fff;text-shadow:0 2px 12px rgba(0,0,0,.35);}
  .hero .hook{font-size:16px;line-height:1.75;max-width:720px;margin:0 auto 18px;color:#dbe6e6;}
  .hero-meta{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;font-size:13.5px;color:#b9cece;margin-bottom:22px;}
  .hero-meta strong{color:var(--aux);font-size:16px;}
  .hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}

  /* section head */
  .sec-head{margin-bottom:18px;}
  .sec-head h2{font-size:22px;color:var(--main);margin-bottom:8px;}
  .sec-head p{font-size:14.5px;color:var(--muted);margin:0;max-width:780px;}

  /* category */
  .cat-scroll{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
  .cat-card{background:var(--card);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);border-left:4px solid var(--aux);transition:transform .18s,box-shadow .18s;}
  .cat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
  .cat-card h3{font-size:17px;margin-bottom:6px;color:var(--main);}
  .cat-card p{font-size:14px;color:var(--muted);margin:0;line-height:1.65;}

  /* cards grid */
  .grid{display:grid;grid-template-columns:1fr;gap:var(--gap);}
  .card{background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .18s,box-shadow .18s;}
  .card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
  .thumb{position:relative;aspect-ratio:3/4;overflow:hidden;}
  .thumb .tagline{position:absolute;left:10px;top:10px;background:rgba(13,27,42,.82);color:#bff3ec;font-size:12.5px;font-weight:700;padding:3px 10px;border-radius:999px;}
  .card-body{padding:18px;display:flex;flex-direction:column;gap:8px;flex:1;}
  .card-body h3{font-size:17px;color:var(--main);}
  .card-body p{font-size:14px;color:var(--muted);margin:0;line-height:1.65;}
  .meta{font-size:13px;color:var(--aux);font-weight:700;display:flex;gap:12px;flex-wrap:wrap;margin-top:auto;}
  .card-link{font-size:14px;font-weight:700;color:var(--main);border-top:1px solid rgba(13,27,42,.1);padding-top:10px;margin-top:6px;}
  .card-link:hover{color:var(--aux);}

  /* story */
  .story{background:linear-gradient(160deg,#0D1B2A,#14324a);color:#e8f1f1;border-radius:24px;padding:26px 22px;box-shadow:var(--shadow);}
  .story h2{color:#fff;font-size:22px;margin-bottom:14px;}
  .story p{font-size:15.5px;line-height:1.8;color:#d3e2e2;}
  .story p:last-child{margin-bottom:0;}
  .note{font-size:13px;color:#8fb3b3;border-left:3px solid var(--aux);padding-left:12px;margin-top:14px;}

  /* highlights */
  .hl-list{display:grid;gap:14px;}
  .hl-item{background:var(--card);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);display:flex;gap:14px;align-items:flex-start;}
  .hl-num{flex:0 0 40px;height:40px;border-radius:12px;background:rgba(46,196,182,.16);color:var(--main);font-weight:900;display:flex;align-items:center;justify-content:center;font-size:16px;}
  .hl-item h3{font-size:16.5px;margin-bottom:4px;color:var(--main);}
  .hl-item p{font-size:14px;color:var(--muted);margin:0;line-height:1.65;}

  /* people */
  .people{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
  .person{background:var(--card);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);text-align:center;}
  .avatar{width:72px;height:72px;border-radius:50%;overflow:hidden;margin:0 auto 10px;border:3px solid var(--aux);}
  .person h3{font-size:16px;margin-bottom:4px;color:var(--main);}
  .person p{font-size:13.5px;color:var(--muted);margin:0;line-height:1.6;}

  /* episodes queue */
  .queue-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:16px;font-size:14px;font-weight:700;color:var(--main);}
  .queue-count{background:var(--main);color:#fff;border-radius:999px;padding:4px 14px;font-size:13.5px;}
  .ep-list{display:grid;gap:14px;}
  .ep{background:var(--card);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);display:flex;gap:14px;align-items:center;flex-wrap:wrap;}
  .ep-no{flex:0 0 52px;height:52px;border-radius:14px;background:linear-gradient(135deg,var(--main),#1c4a5e);color:var(--aux);font-weight:900;display:flex;align-items:center;justify-content:center;font-size:15px;}
  .ep-main{flex:1 1 220px;min-width:180px;}
  .ep-main h3{font-size:16px;margin-bottom:4px;color:var(--main);}
  .ep-main p{font-size:13.5px;color:var(--muted);margin:0;line-height:1.6;}
  .ep-meta{font-size:13px;color:var(--aux);font-weight:700;}
  .ep-hidden{display:none;}

  /* related */
  .rel-grid{display:grid;grid-template-columns:1fr;gap:var(--gap);}
  .rel-card{background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;gap:0;transition:transform .18s,box-shadow .18s;}
  .rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
  .rel-thumb{flex:0 0 108px;aspect-ratio:3/4;overflow:hidden;}
  .rel-info{padding:16px;display:flex;flex-direction:column;gap:6px;}
  .rel-info h3{font-size:16.5px;color:var(--main);}
  .rel-info p{font-size:13.5px;color:var(--muted);margin:0;line-height:1.6;}
  .rel-info .kw{font-size:12.5px;color:var(--aux);font-weight:700;}

  /* faq */
  .faq{display:grid;gap:12px;}
  details{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px 18px;}
  summary{font-size:15.5px;font-weight:700;color:var(--main);cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:12px;align-items:center;}
  summary::-webkit-details-marker{display:none;}
  summary::after{content:"＋";color:var(--aux);font-weight:900;}
  details[open] summary::after{content:"－";}
  details p{font-size:14px;color:var(--muted);margin:12px 0 0;line-height:1.7;}

  /* footer */
  footer{background:var(--main);color:#cdd9d9;padding:48px 0 28px;margin-top:20px;}
  .foot-grid{display:grid;grid-template-columns:1fr;gap:24px;}
  .foot-col h3{font-size:16px;color:#fff;margin-bottom:10px;}
  .foot-col p{font-size:13.5px;color:#a9bdbd;line-height:1.7;}
  .foot-links{display:flex;flex-wrap:wrap;gap:10px 16px;}
  .foot-links a{font-size:13.5px;color:#bff3ec;padding:4px 10px;border-radius:999px;background:rgba(46,196,182,.12);border:1px solid rgba(46,196,182,.3);}
  .foot-links a:hover{background:rgba(46,196,182,.26);}
  .foot-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:28px;padding-top:20px;font-size:12.5px;line-height:1.7;color:#9fb4b4;text-align:center;display:flex;flex-direction:column;gap:8px;align-items:center;}
  .foot-bottom a{color:#bff3ec;}
  #toTop{position:fixed;right:18px;bottom:22px;width:46px;height:46px;border-radius:50%;background:var(--accent);color:#06231f;font-weight:900;border:none;cursor:pointer;box-shadow:var(--shadow);font-size:18px;display:none;z-index:60;}

  @media (min-width:720px){
    .container{padding:0 32px;}
    .grid{grid-template-columns:repeat(3,1fr);gap:20px;}
    .cat-scroll{grid-template-columns:repeat(3,1fr);}
    .people{grid-template-columns:repeat(4,1fr);}
    .hl-list{grid-template-columns:repeat(2,1fr);}
    .rel-grid{grid-template-columns:repeat(2,1fr);}
    .hero h1{font-size:38px;}
    .sec-head h2,.story h2{font-size:26px;}
    .foot-grid{grid-template-columns:2fr 1fr 1fr;}
    .header-inner{min-height:72px;flex-wrap:nowrap;}
  }
  @media (min-width:1100px){
    .container{padding:0 40px;}
    .hero h1{font-size:46px;}
    .hero-banner{height:280px;}
    .hero-body{padding:32px 40px 44px;}
    .sec-head h2,.story h2{font-size:28px;}
    .grid{grid-template-columns:repeat(4,1fr);}
    .rel-grid{grid-template-columns:repeat(3,1fr);}
  }
  @media (max-width:719px){
    .nav{display:none;}
    .nav.open{display:flex;width:100%;order:5;border-top:1px solid rgba(13,27,42,.12);padding-top:10px;}
    .menu-toggle{display:inline-flex;align-items:center;justify-content:center;}
    .search-wrap{margin-left:auto;flex:1 1 100%;order:6;}
    .search-wrap input{flex:1;min-width:0;}
  }
  @media (prefers-reduced-motion: reduce){
    *{transition:none !important;animation:none !important;}
    .card:hover,.cat-card:hover,.rel-card:hover{transform:none;}
  }