:root{
    --primary:#eab308;
    --accent:#f59e0b;
    --bg:#18181b;
    --text:#fafafa;
    --text-dim:#a1a1aa;
    --border-thick:4px solid #fafafa;
    --border-med:2px solid #fafafa;
    --shadow-hard:8px 8px 0 var(--primary);
    --shadow-hard-accent:8px 8px 0 var(--accent);
    --font-stack:'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  }
  * {border-radius:0 !important;}
  body{
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-stack);
    letter-spacing:0.01em;
  }
  .navbar{
    background: rgba(24,24,27,0.9);
    backdrop-filter: blur(8px);
    border-bottom: var(--border-med);
    box-shadow: 0 4px 0 var(--primary);
    z-index: 999;
  }
  .navbar-brand{
    font-weight:900;
    font-size:1.8rem;
    color: var(--primary) !important;
    text-transform: uppercase;
    letter-spacing:-0.02em;
  }
  .navbar-nav .nav-link{
    color: var(--text) !important;
    font-weight:600;
    padding:0.5rem 1rem;
    margin:0 0.2rem;
    border:2px solid transparent;
    transition: all 0.15s;
  }
  .navbar-nav .nav-link:hover{
    border-color: var(--primary);
    box-shadow: 4px 4px 0 var(--accent);
    color: var(--primary) !important;
  }
  .btn-harsh{
    background: var(--primary);
    color:#18181b;
    font-weight:800;
    border:2px solid var(--text);
    box-shadow: 5px 5px 0 var(--accent);
    padding:0.75rem 1.8rem;
    transition: transform 0.1s, box-shadow 0.15s;
    text-transform: uppercase;
    letter-spacing:0.03em;
  }
  .btn-harsh:hover{
    transform: scale(0.98);
    box-shadow: 2px 2px 0 var(--accent);
    background: var(--accent);
  }
  .section-title{
    font-size:3rem;
    font-weight:900;
    line-height:1.1;
    color: var(--text);
    text-transform: uppercase;
    border-bottom: var(--border-thick);
    display:inline-block;
    padding-bottom:0.2rem;
    margin-bottom:2rem;
    box-shadow: 10px 6px 0 var(--primary);
  }
  .gradient-text{
    background: linear-gradient(130deg, var(--primary) 0%, var(--accent) 80%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
  .hard-card{
    background: #202024;
    border: var(--border-med);
    box-shadow: var(--shadow-hard);
    padding:1.8rem;
    transition: transform 0.15s, border-color 0.15s;
    height:100%;
  }
  .hard-card:hover{
    transform: scale(1.02);
    border-color: var(--accent);
    box-shadow: 12px 12px 0 var(--accent);
  }
  .stat-block{
    border-left: 6px solid var(--primary);
    padding-left:1.2rem;
    background: rgba(234,179,8,0.05);
  }
  .table-compare{
    border: var(--border-med);
    box-shadow: var(--shadow-hard-accent);
    background:#1e1e22;
  }
  .table-compare th{
    background: var(--primary);
    color:#18181b;
    font-weight:800;
    font-size:1.2rem;
    border:2px solid #18181b;
  }
  .table-compare td{
    border:2px solid #3f3f46;
    padding:1rem;
    font-weight:500;
    background:#202024;
    color:var(--text);
  }
  .timeline-wrap{
    position:relative;
  }
  .timeline-wrap::before{
    content:'';
    position:absolute;
    left:16px;
    top:0;
    bottom:0;
    width:4px;
    background: linear-gradient(var(--primary), var(--accent), var(--primary));
  }
  .timeline-item{
    position:relative;
    padding-left:50px;
    padding-bottom:2.5rem;
  }
  .timeline-item::before{
    content:'';
    position:absolute;
    left:4px;
    top:4px;
    width:24px;
    height:24px;
    background: var(--primary);
    border:3px solid var(--text);
    box-shadow: 0 0 0 4px var(--accent);
    z-index:2;
  }
  .timeline-item h3{
    font-weight:800;
    color: var(--primary);
  }
  .timeline-item p{
    color: #d4d4d8;
  }
  .step-number{
    display: inline-block;
    font-size:2rem;
    font-weight:900;
    background: var(--primary);
    color:#18181b;
    padding:0.3rem 0.8rem;
    border:3px solid #fafafa;
    box-shadow: 4px 4px 0 var(--accent);
    margin-right:1rem;
  }
  .faq-q{
    background:#202024;
    border: var(--border-med);
    padding:1.5rem;
    margin-bottom:1rem;
    box-shadow: 5px 5px 0 #3f3f46;
    font-weight:700;
    transition: all 0.1s;
  }
  .faq-q:hover{
    border-color: var(--primary);
    box-shadow: 7px 7px 0 var(--primary);
  }
  .faq-a{
    margin-top:1rem;
    color:#d4d4d8;
    font-weight:400;
    border-left:6px solid var(--accent);
    padding-left:1rem;
  }
  .glow-orb{
    position:absolute;
    width:400px;
    height:400px;
    background: radial-gradient(circle, rgba(234,179,8,0.3) 0%, rgba(245,158,11,0.05) 70%);
    filter: blur(60px);
    pointer-events:none;
    z-index:-1;
  }
  footer{
    border-top: var(--border-thick);
    background:#131316;
    padding:2rem 0;
    margin-top:4rem;
  }
  .friend-links{
    background:#1b1b1f;
    border: var(--border-med);
    padding:1.5rem;
    box-shadow: 5px 5px 0 var(--primary);
  }
  .progress-bar-top{
    position:fixed;
    top:0;
    left:0;
    height:5px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    width:0%;
    z-index:9999;
    transition: width 0.1s;
  }
  img.lazy{
    background: #2a2a2e;
    background-image: linear-gradient(45deg, #202024 25%, #3a3a3f 50%, #202024 75%);
    background-size:400px 400px;
    animation: shimmer 1.2s infinite linear;
    min-height:200px;
  }
  @keyframes shimmer{
    0%{background-position:0 0;}
    100%{background-position:400px 0;}
  }
  @media (max-width:768px){
    .section-title{font-size:2.2rem;}
    .navbar-brand{font-size:1.3rem;}
    .hard-card{box-shadow:5px 5px 0 var(--primary);}
    .table-compare{font-size:0.9rem;}
  }

/* --- 子页面追加 --- */
/* 关于页专属小样式 */
        .about-hero { padding: 80px 0 60px; position: relative; overflow: hidden; }
.about-hero .glow-orb { top: -100px; right: -100px; }
.about-section { padding: 50px 0; border-bottom: 1px dashed rgba(234, 179, 8, 0.3); }
.about-section:last-of-type { border-bottom: none; }
.stat-inline { display: inline-block; background: rgba(234, 179, 8, 0.1); border: 1px solid var(--primary); padding: 8px 18px; border-radius: 4px; margin: 6px 8px 6px 0; font-weight: 600; color: var(--primary); }
.principle-list { list-style: none; padding: 0; }
.principle-list li { padding: 14px 0; border-bottom: 1px solid rgba(250, 250, 250, 0.08); display: flex; gap: 16px; align-items: flex-start; }
.principle-list li:last-child { border-bottom: none; }
.principle-list i { color: var(--primary); font-size: 1.4rem; min-width: 36px; padding-top: 4px; }
.milestone-tag { display: inline-block; background: var(--primary); color: var(--bg); font-weight: 800; font-size: 0.85rem; padding: 4px 14px; border-radius: 20px; margin-right: 12px; letter-spacing: 0.5px; }
.value-card { background: rgba(234, 179, 8, 0.06); border: 1px solid rgba(234, 179, 8, 0.25); border-radius: 12px; padding: 28px 22px; height: 100%; transition: transform 0.3s ease, box-shadow 0.3s ease; }
.value-card:hover { transform: translateY(-6px); box-shadow: 0 12px 28px rgba(0,0,0,0.4); }
.value-card i { font-size: 2rem; color: var(--primary); margin-bottom: 16px; display: block; }
.value-card h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 12px; }
.value-card p { color: var(--text-dim); font-size: 0.95rem; line-height: 1.7; }
.about-quote { border-left: 4px solid var(--primary); padding: 20px 24px; background: rgba(234, 179, 8, 0.04); border-radius: 0 12px 12px 0; margin: 30px 0; font-style: italic; font-size: 1.1rem; }
.about-quote strong { color: var(--primary); font-style: normal; }

/* --- 子页面追加 --- */
.guide-hero {
            background: linear-gradient(135deg, rgba(234,179,8,0.15) 0%, transparent 50%);
            border-bottom: var(--border-med);
            padding: 80px 0 60px;
            position: relative;
            overflow: hidden;
        }
.guide-hero::before {
            content: '📖';
            position: absolute;
            right: -30px;
            top: -30px;
            font-size: 200px;
            opacity: 0.05;
            transform: rotate(-15deg);
        }
.guide-section {
            padding: 60px 0;
            border-bottom: var(--border-med);
        }
.guide-section:nth-child(even) {
            background: rgba(234,179,8,0.03);
        }
.guide-card {
            background: rgba(255,255,255,0.03);
            border: 2px solid var(--text);
            padding: 24px;
            margin-bottom: 20px;
            transition: all 0.3s ease;
        }
.guide-card:hover {
            transform: translate(-2px, -2px);
            box-shadow: 4px 4px 0 var(--primary);
        }
.guide-card .card-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
.guide-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }
.guide-card p {
            color: var(--text-dim);
            font-size: 0.95rem;
            line-height: 1.7;
        }
.step-box {
            background: rgba(0,0,0,0.3);
            border: var(--border-med);
            padding: 30px;
            margin-bottom: 20px;
            position: relative;
        }
.step-box .step-num {
            position: absolute;
            top: -20px;
            left: 20px;
            background: var(--primary);
            color: var(--bg);
            font-weight: 900;
            padding: 5px 15px;
            font-size: 1.2rem;
            box-shadow: var(--shadow-hard);
        }
.step-box h3 {
            margin-top: 15px;
            font-weight: 700;
            font-size: 1.3rem;
        }
.step-box p {
            color: var(--text-dim);
            line-height: 1.8;
        }
.tip-box {
            background: rgba(245,158,11,0.1);
            border-left: 4px solid var(--accent);
            padding: 20px 25px;
            margin: 25px 0;
        }
.tip-box i {
            color: var(--accent);
            margin-right: 8px;
        }
.tip-box p {
            color: var(--text);
            margin-bottom: 0;
            font-size: 0.95rem;
            line-height: 1.7;
        }
.reading-list {
            list-style: none;
            padding: 0;
        }
.reading-list li {
            padding: 15px 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            display: flex;
            align-items: flex-start;
            gap: 15px;
        }
.reading-list li:last-child {
            border-bottom: none;
        }
.reading-list .list-icon {
            color: var(--primary);
            font-size: 1.2rem;
            margin-top: 3px;
        }
.reading-list .list-content h4 {
            font-weight: 600;
            font-size: 1rem;
            margin-bottom: 5px;
            color: var(--text);
        }
.reading-list .list-content p {
            color: var(--text-dim);
            font-size: 0.9rem;
            margin-bottom: 0;
            line-height: 1.6;
        }
.checklist {
            background: rgba(234,179,8,0.05);
            border: var(--border-med);
            padding: 25px;
        }
.checklist li {
            color: var(--text);
            margin-bottom: 10px;
            font-size: 0.95rem;
        }
.checklist li i {
            color: var(--primary);
            margin-right: 8px;
        }
.glossary-term {
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(255,255,255,0.1);
            padding: 15px 20px;
            margin-bottom: 12px;
            border-radius: 4px;
        }
.glossary-term strong {
            color: var(--primary);
            font-size: 1.05rem;
        }
.glossary-term p {
            color: var(--text-dim);
            margin: 5px 0 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }
.guide-hero {
                padding: 50px 0 40px;
            }
.guide-hero h1 {
                font-size: 2rem !important;
            }

/* --- 子页面追加 --- */
/* 覆盖 Bootstrap 默认白底，保持站点深色风格 */
        .card, .card-body, .card-header, .card-footer {
            background: var(--bg) !important;
            color: var(--text) !important;
            border: var(--border-med) !important;
            border-radius: 0 !important;
            box-shadow: var(--shadow-hard-accent);
        }
.list-group-item {
            background: rgba(0,0,0,0.2) !important;
            color: var(--text) !important;
            border: 1px solid var(--text-dim) !important;
        }
.accordion-item {
            background: transparent !important;
            border: var(--border-med) !important;
            color: var(--text) !important;
        }
.accordion-button {
            background: var(--bg) !important;
            color: var(--text) !important;
            border-bottom: 1px solid var(--primary) !important;
            box-shadow: none !important;
        }
.accordion-button:not(.collapsed) {
            background: rgba(234, 179, 8, 0.1) !important;
            color: var(--primary) !important;
        }
.accordion-body {
            background: var(--bg) !important;
            color: var(--text-dim) !important;
        }
.form-control, .form-select {
            background: rgba(0,0,0,0.3) !important;
            color: var(--text) !important;
            border: var(--border-med) !important;
            border-radius: 0 !important;
        }
.form-control::placeholder {
            color: rgba(255,255,255,0.4) !important;
        }
/* 高亮当前导航 */
        .navbar-nav .nav-link.active {
            color: var(--primary) !important;
            font-weight: 700;
            border-bottom: 3px solid var(--primary);
        }
/* 自定义小标题风格 */
        .disclaimer-sub {
            font-weight: 800;
            color: var(--primary);
            border-left: 6px solid var(--accent);
            padding-left: 0.75rem;
            margin-top: 2.5rem;
            margin-bottom: 1.2rem;
            font-size: 1.5rem;
        }
.hard-card p, .hard-card li {
            color: var(--text-dim);
            line-height: 1.7;
        }
.hard-card strong {
            color: var(--text);
        }
.badge-own {
            background: var(--primary);
            color: #18181b;
            font-weight: 800;
            padding: 0.2rem 0.8rem;
            display: inline-block;
            margin-bottom: 0.8rem;
            letter-spacing: 0.5px;
        }
.table-compare td, .table-compare th {
            border-color: var(--text-dim);
            padding: 0.75rem;
        }
.friend-links a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            margin-right: 1.2rem;
        }
.friend-links a:hover {
            text-decoration: underline;
        }
/* 锚点偏移 */
        .anchor-offset {
            scroll-margin-top: 90px;
        }

/* --- 子页面追加 --- */
/* 确保Bootstrap组件继承站点配色，避免白底黑字 */
    .card, .card-body, .card-title, .card-text, .card-header, .card-footer,
    .form-control, .form-select, .form-label, .input-group-text,
    .table, .list-group-item, .accordion-item, .accordion-button, .accordion-body,
    .modal-content, .modal-header, .modal-body, .dropdown-menu, .dropdown-item,
    .nav-link, .navbar, .navbar-brand, .btn-light, .btn-outline-* {
      background-color: transparent;
      color: var(--text);
      border-color: var(--border-med);
    }
.form-control:focus, .form-select:focus {
      background-color: rgba(0,0,0,0.5);
      color: var(--text);
      border-color: var(--primary);
      box-shadow: none;
    }
/* 覆盖下拉/手风琴等可能漏掉的 */
    .list-group-item {
      background: rgba(0,0,0,0.2);
      color: var(--text);
      border-color: var(--border-med);
    }
/* 导航高亮当前页 */
    .nav-link.active {
      color: var(--primary);
      font-weight: 700;
      border-bottom: 3px solid var(--primary);
    }
/* 联系卡片网格 */
    .contact-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 2rem;
      margin-top: 2rem;
    }
.contact-card {
      background: rgba(0,0,0,0.3);
      border: var(--border-med);
      padding: 1.8rem 1.5rem;
      box-shadow: 6px 6px 0 rgba(0,0,0,0.4);
      transition: 0.2s;
    }
.contact-card:hover {
      transform: translate(-3px, -3px);
      box-shadow: 8px 8px 0 var(--primary);
    }
.contact-icon {
      font-size: 2.5rem;
      color: var(--primary);
      margin-bottom: 1rem;
    }
.contact-card h3 {
      font-size: 1.4rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      margin-bottom: 0.75rem;
    }
.contact-card p, .contact-card a {
      color: var(--text-dim);
      font-weight: 400;
    }
.contact-card a {
      color: var(--accent);
      text-decoration: underline;
      text-underline-offset: 3px;
    }
.contact-card a:hover {
      color: var(--primary);
    }
.hr-light {
      border-top: 2px solid var(--border-med);
      opacity: 0.4;
      margin: 2rem 0;
    }