:root {
    --primary: #ea580c;
    --accent: #d97706;
    --bg: #fffbf5;
    --text: #1c1917;
    --border-thick: 4px solid var(--text);
    --shadow-hard: 8px 8px 0px 0px var(--text);
  }

  * {
    border-radius: 0 !important;
  }

  body {
    background-color: var(--bg);
    color: var(--text);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-weight: 400;
  }

  h1, h2, h3, h4, h5, h6, .navbar-brand, .display-1, .display-2, .display-3, .display-4, .display-5, .display-6 {
    font-family: 'Inter', sans-serif;
    font-weight: 900;
    letter-spacing: -0.02em;
  }

  .navbar {
    background-color: var(--bg);
    border-bottom: var(--border-thick);
    box-shadow: var(--shadow-hard);
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
  }

  .navbar-brand {
    font-size: 2rem;
    font-weight: 900;
    color: var(--text);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
  }

  .navbar-brand:hover {
    color: var(--primary);
  }

  .navbar-toggler {
    border: 3px solid var(--text);
    box-shadow: 4px 4px 0px 0px var(--text);
  }

  .navbar-toggler:focus {
    box-shadow: 4px 4px 0px 0px var(--text);
  }

  .nav-link {
    font-weight: 600;
    color: var(--text);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    border: 2px solid transparent;
  }

  .nav-link:hover {
    color: var(--primary);
    border-color: var(--text);
    background-color: var(--bg);
  }

  .btn-custom {
    background-color: var(--primary);
    color: white;
    font-weight: 700;
    border: 3px solid var(--text);
    box-shadow: 5px 5px 0px 0px var(--text);
    padding: 0.75rem 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.15s ease;
    text-decoration: none;
    display: inline-block;
  }

  .btn-custom:hover {
    transform: translate(3px, 3px);
    box-shadow: 2px 2px 0px 0px var(--text);
    color: white;
  }

  .btn-outline-custom {
    background-color: transparent;
    color: var(--text);
    font-weight: 700;
    border: 3px solid var(--text);
    box-shadow: 5px 5px 0px 0px var(--text);
    padding: 0.75rem 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.15s ease;
    text-decoration: none;
    display: inline-block;
  }

  .btn-outline-custom:hover {
    transform: translate(3px, 3px);
    box-shadow: 2px 2px 0px 0px var(--text);
    color: var(--primary);
  }

  .hero-section {
    border-bottom: var(--border-thick);
    padding: 5rem 0 6rem;
    background-color: var(--bg);
    position: relative;
  }

  .tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    max-width: 900px;
    margin: 0 auto 3rem;
  }

  .tag-item {
    font-size: 1.2rem;
    font-weight: 800;
    padding: 0.5rem 1.5rem;
    border: 3px solid var(--text);
    background-color: white;
    box-shadow: 5px 5px 0px 0px var(--text);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    transition: all 0.15s ease;
    display: inline-block;
    animation: tagFloat 6s infinite ease-in-out;
  }

  .tag-item:nth-child(2n) {
    background-color: var(--primary);
    color: white;
    animation-delay: 0.5s;
  }

  .tag-item:nth-child(3n) {
    background-color: var(--accent);
    color: white;
    animation-delay: 1s;
  }

  .tag-item:nth-child(4n) {
    animation-delay: 1.5s;
  }

  .tag-item:nth-child(5n) {
    animation-delay: 2s;
  }

  @keyframes tagFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-8px) rotate(-2deg); }
    75% { transform: translateY(-4px) rotate(2deg); }
  }

  .hero-title {
    font-size: 4.5rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
  }

  .hero-subtitle {
    font-size: 1.3rem;
    font-weight: 400;
    max-width: 700px;
    margin: 0 auto 2.5rem;
    color: #44403c;
  }

  .section-padding {
    padding: 5rem 0;
  }

  .section-title {
    font-size: 2.8rem;
    font-weight: 900;
    text-transform: uppercase;
    margin-bottom: 2rem;
    position: relative;
    display: inline-block;
  }

  .section-title::after {
    content: '';
    display: block;
    width: 60%;
    height: 8px;
    background-color: var(--primary);
    margin-top: 0.5rem;
  }

  .border-box {
    border: var(--border-thick);
    box-shadow: var(--shadow-hard);
    padding: 2.5rem;
    background-color: white;
    margin-bottom: 2rem;
  }

  .hard-card {
    border: 3px solid var(--text);
    box-shadow: 6px 6px 0px 0px var(--text);
    background-color: white;
    transition: all 0.15s ease;
    overflow: hidden;
  }

  .hard-card:hover {
    transform: translate(3px, 3px);
    box-shadow: 3px 3px 0px 0px var(--text);
  }

  .comic-card {
    position: relative;
    background-color: white;
    border: 3px solid var(--text);
    box-shadow: 6px 6px 0px 0px var(--text);
    transition: all 0.15s ease;
    overflow: hidden;
    margin-bottom: 2rem;
  }

  .comic-card:hover {
    transform: translate(3px, 3px);
    box-shadow: 3px 3px 0px 0px var(--text);
  }

  .comic-cover {
    width: 100%;
    height: 280px;
    object-fit: cover;
    background-color: #e7e5e4;
    display: block;
  }

  .comic-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 70px;
    height: 70px;
    background-color: var(--primary);
    border: 3px solid white;
    box-shadow: 4px 4px 0px 0px rgba(0,0,0,0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.8rem;
    transition: transform 0.25s ease;
    opacity: 0;
  }

  .comic-card:hover .comic-play-btn {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
  }

  .comic-info {
    padding: 1.2rem;
  }

  .comic-title {
    font-weight: 800;
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
  }

  .comic-meta {
    font-size: 0.85rem;
    color: #57534e;
  }

  .timeline-section {
    position: relative;
    padding-left: 2.5rem;
  }

  .timeline-section::before {
    content: '';
    position: absolute;
    left: 10px;
    top: 0;
    bottom: 0;
    width: 4px;
    background-color: var(--text);
  }

  .timeline-item {
    position: relative;
    margin-bottom: 2.5rem;
    border: 3px solid var(--text);
    background-color: white;
    box-shadow: 5px 5px 0px 0px var(--text);
    padding: 1.5rem;
  }

  .timeline-item::before {
    content: '';
    position: absolute;
    left: -2.2rem;
    top: 1.5rem;
    width: 16px;
    height: 16px;
    background-color: var(--primary);
    border: 3px solid var(--text);
  }

  .timeline-year {
    display: inline-block;
    background-color: var(--primary);
    color: white;
    font-weight: 800;
    padding: 0.2rem 0.8rem;
    margin-bottom: 0.8rem;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
  }

  .compare-table-wrapper {
    overflow-x: auto;
  }

  .compare-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 1rem;
  }

  .compare-table th,
  .compare-table td {
    border: 3px solid var(--text);
    padding: 1.2rem;
    text-align: center;
    font-weight: 500;
    background-color: white;
  }

  .compare-table th {
    background-color: var(--text);
    color: white;
    font-weight: 800;
    text-transform: uppercase;
    font-size: 0.95rem;
    letter-spacing: 0.05em;
  }

  .compare-table .featured-col {
    background-color: var(--primary);
    color: white;
    font-weight: 800;
    font-size: 1.05rem;
  }

  .compare-table .featured-col-sub {
    background-color: #ffedd5;
    color: var(--text);
    font-weight: 700;
  }

  .compare-table .check-icon {
    color: var(--primary);
    font-size: 1.3rem;
    font-weight: 900;
  }

  .compare-table .cross-icon {
    color: #a8a29e;
    font-size: 1.1rem;
  }

  .faq-section .accordion-item {
    border: 3px solid var(--text);
    box-shadow: 4px 4px 0px 0px var(--text);
    margin-bottom: 1.5rem;
    background-color: white;
  }

  .faq-section .accordion-button {
    font-weight: 700;
    font-size: 1.1rem;
    padding: 1.2rem 1.5rem;
    background-color: white;
    color: var(--text);
    text-align: left;
    border: none;
    box-shadow: none;
    text-transform: none;
    letter-spacing: 0;
  }

  .faq-section .accordion-button:not(.collapsed) {
    background-color: #ffedc9;
    color: var(--text);
  }

  .faq-section .accordion-button:focus {
    box-shadow: none;
    border: none;
  }

  .faq-section .accordion-body {
    padding: 1.2rem 1.5rem;
    font-size: 1rem;
    line-height: 1.7;
    border-top: 2px solid var(--text);
  }

  .tab-section .nav-tabs {
    border-bottom: 3px solid var(--text);
  }

  .tab-section .nav-link {
    border: 3px solid var(--text);
    border-bottom: none;
    border-radius: 0 !important;
    margin-right: 0.5rem;
    background-color: #f5f5f4;
    color: var(--text);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.03em;
    padding: 0.8rem 1.5rem;
  }

  .tab-section .nav-link.active {
    background-color: var(--primary);
    color: white;
    border-color: var(--text);
  }

  .tab-section .tab-content {
    border: 3px solid var(--text);
    border-top: none;
    padding: 2rem;
    background-color: white;
    box-shadow: 5px 5px 0px 0px var(--text);
  }

  .feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
    border: 3px solid var(--text);
    background-color: white;
    padding: 1.2rem;
    box-shadow: 4px 4px 0px 0px var(--text);
  }

  .feature-icon {
    font-size: 1.8rem;
    color: var(--primary);
    min-width: 50px;
    text-align: center;
  }

  .feature-text h4 {
    font-weight: 800;
    font-size: 1.1rem;
    margin-bottom: 0.4rem;
  }

  .feature-text p {
    margin: 0;
    color: #44403c;
  }

  .cta-section {
    background-color: var(--text);
    color: white;
    padding: 4rem 0;
    border-top: var(--border-thick);
    border-bottom: var(--border-thick);
  }

  .cta-section h2 {
    color: white;
    font-size: 2.8rem;
    font-weight: 900;
    text-transform: uppercase;
  }

  .cta-section p {
    font-size: 1.2rem;
    color: #d6d3d1;
  }

  .footer {
    background-color: var(--bg);
    border-top: var(--border-thick);
    padding: 3rem 0 2rem;
    margin-top: 4rem;
  }

  .footer a {
    color: var(--text);
    text-decoration: none;
    font-weight: 600;
  }

  .footer a:hover {
    color: var(--primary);
    text-decoration: underline;
  }

  .friend-links {
    border: 3px solid var(--text);
    padding: 1.5rem;
    margin-top: 2rem;
    background-color: white;
    box-shadow: 4px 4px 0px 0px var(--text);
  }

  .friend-links h5 {
    font-weight: 800;
    margin-bottom: 1rem;
    font-size: 1.2rem;
  }

  .back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 55px;
    height: 55px;
    background-color: var(--primary);
    color: white;
    border: 3px solid var(--text);
    box-shadow: 5px 5px 0px 0px var(--text);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    z-index: 9999;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    text-decoration: none;
  }

  .back-to-top.show {
    opacity: 1;
    visibility: visible;
  }

  .back-to-top:hover {
    transform: translate(3px, 3px);
    box-shadow: 2px 2px 0px 0px var(--text);
    color: white;
  }

  .img-lazy {
    opacity: 0;
    transition: opacity 0.6s ease;
    background-color: #e7e5e4;
  }

  .img-lazy.loaded {
    opacity: 1;
  }

  .keyword-strip {
    background-color: var(--text);
    color: white;
    padding: 0.8rem 0;
    overflow: hidden;
    border-bottom: 3px solid var(--primary);
  }

  .keyword-strip-inner {
    display: flex;
    gap: 2rem;
    animation: scrollStrip 25s linear infinite;
    white-space: nowrap;
  }

  @keyframes scrollStrip {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
  }

  .keyword-strip span {
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  @media (max-width: 768px) {
    .hero-title {
      font-size: 2.6rem;
    }
    .section-title {
      font-size: 2rem;
    }
    .tag-cloud {
      gap: 0.6rem;
    }
    .tag-item {
      font-size: 0.9rem;
      padding: 0.4rem 1rem;
    }
    .border-box {
      padding: 1.5rem;
    }
  }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.accordion-header { background:transparent !important; }