:root{
    --main:#06b6d4; --accent:#ec4899; --bg:#0c0a1a; --text:#e0f2fe;
    --bs-body-bg:#0c0a1a; --bs-body-color:#e0f2fe;
  }
  body{
    background:var(--bg); color:var(--text);
    font-family:'Inter',-apple-system,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;
    letter-spacing:0.2px; overflow-x:hidden;
  }
  h1,h2,h3,h4,.serif-title{
    font-family:'Source Han Serif SC','Noto Serif SC',Songti SC,SimSun,serif;
    font-weight:700;
  }
  /* 完全无阴影,纯描边风格 */
  .outline-card{
    background:transparent;
    border:1px solid rgba(6,182,212,0.3);
    border-radius:0.75rem;
    padding:1.5rem 1.25rem;
    transition:border-color 0.2s, background 0.2s;
    backdrop-filter: blur(2px);
  }
  .outline-card:hover{
    border-color:var(--main);
    background:rgba(6,182,212,0.03);
  }
  .navbar-custom{
    background:rgba(12,10,26,0.85); backdrop-filter: blur(8px);
    border-bottom:1px solid rgba(224,242,254,0.1);
    padding-top:0.6rem; padding-bottom:0.6rem;
  }
  .navbar-brand{
    font-weight:800; font-size:1.9rem; letter-spacing:1px; color:var(--main) !important;
    font-family:'Source Han Serif SC',serif;
  }
  .navbar-brand .brand-icon{margin-right:6px; color:var(--accent);}
  .nav-link{
    color:rgba(224,242,254,0.85) !important; font-weight:500; margin:0 0.75rem;
    border-bottom:2px solid transparent; padding-bottom:2px;
  }
  .nav-link:hover{color:var(--main) !important; border-bottom-color:var(--main);}
  .btn-neon{
    background:transparent; border:1.5px solid var(--main); color:var(--text);
    border-radius:50px; padding:0.5rem 1.5rem; font-weight:600;
    transition: all 0.2s;
  }
  .btn-neon:hover{background:var(--main); color:#0c0a1a; box-shadow:0 0 0 2px rgba(6,182,212,0.3);}
  .btn-accent{
    background:var(--accent); border:1.5px solid var(--accent); color:#fff;
    border-radius:50px; padding:0.5rem 1.8rem; font-weight:600;
  }
  .btn-accent:hover{background:transparent; color:var(--accent);}
  .hero-media{
    width:100%; aspect-ratio:16/10; object-fit:cover; border-radius:1.25rem;
    border:1px solid rgba(6,182,212,0.5);
  }
  .poster-grid{
    display:grid; grid-template-columns:repeat(2,1fr); gap:1.2rem;
  }
  @media(min-width:768px){.poster-grid{grid-template-columns:repeat(3,1fr);}}
  @media(min-width:1200px){.poster-grid{grid-template-columns:repeat(4,1fr);}}
  .poster-card{
    background:transparent; border:1px solid rgba(224,242,254,0.2);
    border-radius:0.75rem; overflow:hidden; transition:transform 0.2s,border-color 0.2s;
    position:relative; cursor:pointer;
  }
  .poster-card:hover{transform:translateY(-4px); border-color:var(--main);}
  .poster-card .img-wrap{position:relative; aspect-ratio:2/3; background:#151227;}
  .poster-card img{width:100%; height:100%; object-fit:cover; display:block;}
  .poster-card .play-overlay{
    position:absolute; inset:0; background:rgba(12,10,26,0.3); display:flex; align-items:center; justify-content:center;
    opacity:0; transition:opacity 0.2s;
  }
  .poster-card:hover .play-overlay{opacity:1;}
  .play-icon{width:52px; height:52px; border-radius:50%; background:rgba(6,182,212,0.85); color:#0c0a1a; font-size:1.5rem; display:flex; align-items:center; justify-content:center; padding-left:6px;}
  .poster-card .badge{position:absolute; top:8px; left:8px; background:#ec4899cc; color:#fff; font-weight:600; border-radius:30px; padding:0.2rem 0.8rem; font-size:0.7rem;}
  .poster-title{font-weight:600; padding:0.6rem 0.2rem 0.4rem; font-size:1rem; color:#f0faff;}
  .poster-meta{font-size:0.75rem; opacity:0.8; padding:0 0.2rem 0.8rem; border-bottom:1px dashed #0f172a;}
  .list-article{
    border-bottom:1px solid rgba(224,242,254,0.15); padding:0.85rem 0; color:rgba(224,242,254,0.9);
    text-decoration:none; display:block; transition:color 0.2s;
  }
  .list-article:hover{color:var(--main);}
  .list-article .date{font-size:0.7rem; color:var(--accent); letter-spacing:1px; margin-right:0.5rem;}
  .tag-chip{
    display:inline-block; border:1px solid var(--main); color:var(--main); background:transparent;
    border-radius:40px; padding:0.2rem 0.9rem; font-size:0.8rem; margin:0.2rem 0.2rem; font-weight:500;
    transition: background 0.15s;
  }
  .tag-chip:hover{background:rgba(6,182,212,0.1);}
  .medal-icon{color:#ffd966; margin-right:6px;}
  .gold-medal{color:#ffb84d;} .silver-medal{color:#cdd6e4;} .bronze-medal{color:#df9f7b;}
  .scroll-top-btn{
    position:fixed; bottom:2rem; right:2rem; width:48px; height:48px; border-radius:50%; background:var(--accent);
    color:white; border:none; z-index:999; display:flex; align-items:center; justify-content:center;
    opacity:0; visibility:hidden; transition:0.3s; font-size:1.5rem; cursor:pointer;
  }
  .scroll-top-btn.show{opacity:1; visibility:visible;}
  .progress-bar-top{
    position:fixed; top:0; left:0; height:4px; width:0%; background:linear-gradient(90deg,var(--main),var(--accent)); z-index:10000;
  }
  .footer-link{color:rgba(224,242,254,0.7); text-decoration:none; font-size:0.9rem; display:block; padding:0.2rem 0;}
  .footer-link:hover{color:var(--main);}
  .bottom-drawer{
    position: fixed; bottom:0; left:0; right:0; z-index:1050; background:#1b1930; border-top:2px solid var(--main);
    transform: translateY(110%); transition:transform 0.3s ease; padding:1.5rem 2rem; color:var(--text);
    max-height:75vh; overflow-y:auto;
  }
  .bottom-drawer.show{transform: translateY(0);}
  .drawer-backdrop{position:fixed; inset:0; background:rgba(0,0,0,0.6); z-index:1040; opacity:0; pointer-events:none;}
  .drawer-backdrop.active{opacity:1; pointer-events:auto;}
  .section-number{font-size:3rem; font-weight:800; color:rgba(6,182,212,0.2); font-family:serif; margin-right:0.8rem; line-height:1;}
  .eyebrow{color:var(--accent); font-weight:600; letter-spacing:2px; font-size:0.8rem;}

/* --- 子页面追加 --- */
/* 确保没有Bootstrap默认白底干扰——本页组件一律自写类，不加bootstrap组件类 */
        .guide-hero { padding: 3rem 0 1rem 0; }
.section-block { margin-bottom: 3.5rem; }
.article-list-item { border-bottom: 1px solid rgba(6, 182, 212, 0.15); padding: 1.2rem 0; }
.article-list-item:last-child { border-bottom: none; }
.tag-soft { background: rgba(6,182,212,.12); color: var(--text); border: 1px solid rgba(6,182,212,.3); }
.tag-hot { background: rgba(236,72,153,.15); color: #fbcfe8; border: 1px solid rgba(236,72,153,.3); }
.meta-sm { font-size: .85rem; color: #94a3b8; }
.section-title-border { border-left: 4px solid var(--accent); padding-left: 1rem; }
.drawer-space { height: 30px; }
/* 避免被底部抽屉遮住 */
        .link-hover:hover { color: var(--accent) !important; transition: .2s; }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.accordion-item { background:rgba(255,255,255,.04) !important; color:#e0f2fe !important; border-color:rgba(255,255,255,.12) !important; }
.accordion-button { background:rgba(255,255,255,.04) !important; color:#e0f2fe !important; }
.accordion-body { background:transparent !important; color:#e0f2fe !important; }
.accordion-header { background:transparent !important; }
.accordion-button::after { filter: invert(1) grayscale(1) brightness(2); }