/* roulang page: index */
:root {
    --bg: #0B0E14;
    --panel: #11151C;
    --card: #151B23;
    --text: #E9ECF2;
    --muted: #8C94A3;
    --gold: #C6A76D;
    --goldlight: #DCC08A;
    --border: rgba(233, 236, 242, 0.08);
    --border-strong: rgba(233, 236, 242, 0.16);
    --sidebar-w: 136px;
  }

  * {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: "PingFang SC", "Hiragino Sans GB", "Source Han Sans CN", "Microsoft YaHei", sans-serif;
    line-height: 1.75;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
  }

  a {
    color: inherit;
    text-decoration: none;
  }

  img {
    max-width: 100%;
    display: block;
  }

  button,
  input,
  textarea {
    font: inherit;
    color: inherit;
  }

  :focus-visible {
    outline: 2px solid var(--gold);
    outline-offset: 2px;
  }

  ::selection {
    background: rgba(198, 167, 109, 0.3);
    color: #fff;
  }

  .mono,
  .num {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  }

  .wrap {
    width: min(1160px, calc(100% - 48px));
    margin-inline: auto;
    position: relative;
    z-index: 1;
  }

  .site-main {
    margin-left: var(--sidebar-w);
    position: relative;
    z-index: 1;
  }

  .section {
    padding: 92px 0;
    border-bottom: 1px solid var(--border);
    position: relative;
  }

  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    letter-spacing: 0.14em;
    color: var(--gold);
    font-weight: 500;
  }

  .eyebrow::before {
    content: "";
    display: block;
    width: 26px;
    height: 1px;
    background: var(--gold);
  }

  .sec-head h2 {
    margin: 16px 0 14px;
    font-size: clamp(1.8rem, 2.6vw, 2.45rem);
    line-height: 1.3;
    letter-spacing: -0.01em;
    font-weight: 600;
  }

  .sec-head p {
    color: var(--muted);
    font-size: 1rem;
    max-width: 680px;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 8px;
    padding: 14px 24px;
    font-size: 15px;
    line-height: 1;
    text-decoration: none;
    border: 1px solid transparent;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
  }

  .btn-gold {
    background: var(--gold);
    color: #151008;
  }

  .btn-gold:hover {
    background: var(--goldlight);
    box-shadow: 0 8px 26px rgba(198, 167, 109, 0.2);
    transform: translateY(-2px);
  }

  .btn-ghost {
    border-color: var(--border-strong);
    color: var(--text);
    background: transparent;
  }

  .btn-ghost:hover {
    border-color: var(--gold);
    color: var(--goldlight);
    background: rgba(198, 167, 109, 0.04);
  }

  .btn-text {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--text);
    text-decoration: none;
    transition: color 0.2s;
  }

  .btn-text .arr {
    transition: transform 0.2s ease;
  }

  .btn-text:hover .arr {
    transform: translateX(4px);
  }

  .btn-text:hover {
    color: var(--goldlight);
  }

  .sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    width: var(--sidebar-w);
    z-index: 60;
    display: flex;
    flex-direction: column;
    background: #0C0F15;
    border-right: 1px solid rgba(233, 236, 242, 0.05);
    padding: 28px 14px 22px;
  }

  .brand-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 0 0 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .brand-mark {
    width: 46px;
    height: 46px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(198, 167, 109, 0.5);
    border-radius: 10px;
    color: var(--goldlight);
    font-size: 20px;
    line-height: 1;
    background: rgba(198, 167, 109, 0.04);
  }

  .brand-name {
    font-size: 12px;
    color: var(--text);
    letter-spacing: 0.1em;
    white-space: nowrap;
  }

  .side-nav {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin: 24px 0;
  }

  .side-nav a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 11px 12px 11px 13px;
    font-size: 13.5px;
    border-radius: 8px;
    color: #9AA3B0;
    border-left: 2px solid transparent;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
  }

  .side-nav a:hover {
    background: rgba(255, 255, 255, 0.03);
    color: #fff;
  }

  .side-nav a.active {
    color: var(--goldlight);
    background: linear-gradient(90deg, rgba(198, 167, 109, 0.1), transparent 72%);
    border-left-color: var(--gold);
  }

  .side-foot {
    margin-top: auto;
    padding: 18px 6px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: #59616E;
    font-size: 11px;
    line-height: 1.8;
    text-align: center;
  }

  .topbar {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    z-index: 70;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    background: rgba(11, 14, 20, 0.84);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
  }

  .mobile-brand {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    letter-spacing: 0.05em;
  }

  .menu-btn {
    width: 40px;
    height: 40px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: transparent;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    cursor: pointer;
  }

  .menu-btn span {
    width: 16px;
    height: 1px;
    background: var(--text);
    display: block;
    transition: transform 0.2s;
  }

  .mobile-nav {
    position: fixed;
    inset: 0;
    z-index: 65;
    background: rgba(7, 9, 13, 0.97);
    backdrop-filter: blur(18px);
    transform: translateY(-102%);
    transition: transform 0.3s ease;
  }

  .mobile-nav.open {
    transform: translateY(0);
  }

  .mobile-nav-content {
    display: flex;
    flex-direction: column;
    padding: 104px 32px 42px;
  }

  .mobile-nav a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    font-size: 22px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
  }

  .mobile-nav a.active {
    color: var(--goldlight);
  }

  .hero {
    position: relative;
    overflow: hidden;
    min-height: 640px;
    display: flex;
    align-items: center;
    padding: 90px 0 80px;
    background-image: linear-gradient(180deg, rgba(11, 14, 20, 0.8), rgba(11, 14, 20, 0.93) 72%), url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    border-bottom: 1px solid var(--border);
  }

  .hero-content {
    max-width: 1000px;
  }

  .hero h1 {
    margin: 26px 0 20px;
    font-size: clamp(2.35rem, 4.3vw, 3.8rem);
    line-height: 1.14;
    font-weight: 600;
    letter-spacing: -0.02em;
  }

  .hero-sub {
    color: #B3BAC6;
    font-size: clamp(1rem, 1.3vw, 1.18rem);
    max-width: 720px;
    line-height: 1.9;
  }

  .hero-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    align-items: center;
    margin-top: 34px;
  }

  .hero-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    color: #737D8B;
    font-size: 13px;
    margin-top: 56px;
  }

  .meta-sep {
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: #3D4654;
    display: inline-block;
  }

  .feature-stream {
    display: flex;
    flex-direction: column;
    margin-top: 28px;
  }

  .feature-row {
    display: grid;
    grid-template-columns: 90px 1fr 190px;
    align-items: center;
    gap: 20px;
    padding: 28px 4px;
    border-bottom: 1px solid var(--border);
    transition: background 0.2s;
  }

  .feature-row:first-child {
    border-top: 1px solid var(--border);
  }

  .feature-row:hover {
    background: rgba(255, 255, 255, 0.012);
  }

  .feat-num {
    color: #677180;
    font-size: 14px;
    letter-spacing: 0.06em;
  }

  .feature-row:hover .feat-num {
    color: var(--goldlight);
  }

  .feat-content h3 {
    font-size: 19px;
    margin: 0 0 7px;
    color: var(--text);
    transition: transform 0.2s ease, color 0.2s ease;
  }

  .feature-row:hover .feat-content h3 {
    color: var(--goldlight);
    transform: translateX(4px);
  }

  .feat-content p {
    color: var(--muted);
    font-size: 15px;
    margin: 0;
    max-width: 720px;
  }

  .feat-go {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    color: #7F8A9A;
    font-size: 13px;
    text-decoration: none;
  }

  .feat-go .arr {
    color: #485160;
    font-size: 20px;
    transition: transform 0.2s;
  }

  .feature-row:hover .feat-go {
    color: var(--goldlight);
  }

  .feature-row:hover .feat-go .arr {
    transform: translateX(5px);
    color: var(--goldlight);
  }

  .scenario-visual {
    position: relative;
  }

  .cover-frame {
    border-radius: 12px;
    border: 1px solid var(--border);
    overflow: hidden;
    aspect-ratio: 4 / 3;
    background: var(--panel);
  }

  .cover-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .scenario-list {
    display: flex;
    flex-direction: column;
  }

  .scenario-item {
    display: flex;
    gap: 22px;
    padding: 24px 0;
    border-top: 1px solid var(--border);
  }

  .scenario-item:last-child {
    border-bottom: 1px solid var(--border);
  }

  .scenario-num {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 13px;
    color: var(--gold);
    opacity: 0.8;
    padding-top: 5px;
  }

  .scenario-content h3 {
    font-size: 18px;
    margin: 0 0 8px;
    color: var(--text);
  }

  .scenario-content p {
    margin: 0;
    color: var(--muted);
    font-size: 15px;
  }

  .scenario-content .btn-text {
    margin-top: 12px;
  }

  .case-list {
    border-top: 1px solid var(--border);
  }

  .case-row {
    display: grid;
    grid-template-columns: 1.1fr 0.7fr 1fr 34px;
    gap: 18px;
    align-items: center;
    padding: 26px 10px;
    border-bottom: 1px solid var(--border);
    transition: background 0.2s ease, box-shadow 0.2s ease;
  }

  .case-row:hover {
    background: linear-gradient(90deg, rgba(198, 167, 109, 0.05), transparent);
    box-shadow: inset 2px 0 0 var(--gold);
  }

  .case-main h3 {
    margin: 0;
    font-size: 17px;
    color: var(--text);
  }

  .case-industry {
    width: max-content;
    color: var(--goldlight);
    font-size: 12px;
    border: 1px solid rgba(198, 167, 109, 0.3);
    padding: 3px 10px;
    border-radius: 4px;
    margin-top: 8px;
    background: rgba(198, 167, 109, 0.04);
  }

  .case-description {
    color: var(--muted);
    font-size: 14px;
    line-height: 1.7;
  }

  .case-row .arr {
    color: #5B6472;
    font-size: 20px;
    transition: transform 0.2s;
  }

  .case-row:hover .arr {
    transform: translateX(4px);
    color: var(--goldlight);
  }

  .plan-highlight {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 24px;
    align-items: center;
    padding: 34px;
    border-radius: 14px;
    background: linear-gradient(120deg, rgba(198, 167, 109, 0.1), rgba(198, 167, 109, 0.02));
    border: 1px solid rgba(198, 167, 109, 0.38);
    margin-bottom: 20px;
  }

  .plan-tag {
    display: inline-block;
    font-size: 12px;
    color: #0B0E14;
    background: var(--goldlight);
    border-radius: 4px;
    padding: 3px 10px;
    letter-spacing: 0.04em;
    margin-bottom: 14px;
  }

  .plan-highlight h3 {
    font-size: 28px;
    margin: 0 0 8px;
    font-weight: 600;
  }

  .plan-note {
    color: var(--muted);
    font-size: 14px;
    margin: 0 0 16px;
  }

  .plan-feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }

  .plan-feature-list li {
    font-size: 13px;
    color: #CBD1DA;
    padding: 6px 12px;
    border: 1px solid rgba(198, 167, 109, 0.24);
    background: rgba(198, 167, 109, 0.06);
    border-radius: 6px;
  }

  .plan-price {
    font-size: 16px;
    color: var(--muted);
    text-align: right;
  }

  .plan-price strong {
    font-size: 42px;
    color: var(--text);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-weight: 500;
    margin-right: 6px;
  }

  .plan-simple-row {
    display: grid;
    grid-template-columns: 190px 130px 1fr auto;
    gap: 20px;
    align-items: center;
    padding: 22px 20px;
    background: rgba(17, 21, 28, 0.5);
    border: 1px solid var(--border);
    border-radius: 10px;
    margin-bottom: 12px;
    transition: border-color 0.2s, background 0.2s;
  }

  .plan-simple-row:hover {
    border-color: var(--border-strong);
    background: rgba(21, 27, 35, 0.75);
  }

  .plan-name {
    font-size: 17px;
    font-weight: 600;
  }

  .plan-simple-price {
    font-size: 13px;
    color: var(--muted);
  }

  .plan-simple-price strong {
    font-size: 22px;
    color: var(--text);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  }

  .plan-desc {
    font-size: 14px;
    color: var(--muted);
  }

  .faq-item {
    border-bottom: 1px solid var(--border);
  }

  .faq-item:first-child {
    border-top: 1px solid var(--border);
  }

  .faq-item summary {
    display: flex;
    align-items: center;
    gap: 16px;
    list-style: none;
    cursor: pointer;
    padding: 24px 0;
    font-size: 16px;
    font-weight: 500;
    color: var(--text);
  }

  .faq-item summary::-webkit-details-marker {
    display: none;
  }

  .acc-icon {
    width: 18px;
    height: 18px;
    position: relative;
    flex: 0 0 18px;
    margin-left: auto;
  }

  .acc-icon::before,
  .acc-icon::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    background: var(--gold);
    transition: transform 0.2s ease;
  }

  .acc-icon::before {
    width: 14px;
    height: 1px;
    transform: translate(-50%, -50%);
  }

  .acc-icon::after {
    width: 1px;
    height: 14px;
    transform: translate(-50%, -50%);
  }

  .faq-item[open] .acc-icon::after {
    transform: translate(-50%, -50%) scaleY(0);
  }

  .faq-answer {
    padding: 0 36px 26px 0;
    color: #A8B0BC;
    font-size: 15px;
    line-height: 1.9;
    margin-top: -6px;
  }

  .news-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 40px;
  }

  .news-row {
    display: grid;
    grid-template-columns: 240px 1fr 40px;
    gap: 20px;
    align-items: center;
    padding: 14px;
    background: rgba(17, 21, 28, 0.45);
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s;
  }

  .news-row-feature {
    grid-template-columns: 320px 1fr 44px;
    background: rgba(198, 167, 109, 0.02);
  }

  .news-row:hover {
    border-color: rgba(198, 167, 109, 0.4);
    background: rgba(198, 167, 109, 0.03);
    transform: translateY(-2px);
  }

  .news-row img {
    aspect-ratio: 16 / 9;
    width: 100%;
    object-fit: cover;
    border-radius: 8px;
    background: var(--panel);
  }

  .news-content h3 {
    margin: 8px 0 6px;
    font-size: 18px;
    line-height: 1.45;
    color: var(--text);
    font-weight: 600;
  }

  .news-row p {
    color: var(--muted);
    font-size: 14px;
    line-height: 1.6;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .news-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #6E7785;
    font-size: 12px;
  }

  .news-tag {
    border: 1px solid rgba(198, 167, 109, 0.32);
    color: var(--goldlight);
    padding: 1px 8px;
    border-radius: 4px;
    background: rgba(198, 167, 109, 0.04);
    white-space: nowrap;
  }

  .news-arrow {
    color: #5E6878;
    font-size: 22px;
    text-align: center;
  }

  .news-empty {
    margin-top: 40px;
    min-height: 160px;
    border: 1px dashed rgba(233, 236, 242, 0.16);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #6E7785;
    background: rgba(255, 255, 255, 0.01);
    font-size: 15px;
  }

  .empty-icon {
    color: rgba(198, 167, 109, 0.7);
    font-size: 26px;
    margin-bottom: 10px;
  }

  .cta-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    padding: 52px;
    border-radius: 14px;
    border: 1px solid rgba(198, 167, 109, 0.28);
    background-image: linear-gradient(120deg, rgba(11, 14, 20, 0.9), rgba(11, 14, 20, 0.75)), url('/assets/images/backpic/back-3.png');
    background-size: cover;
    background-position: center;
  }

  .cta-banner h2 {
    margin: 12px 0 10px;
    font-size: clamp(1.7rem, 2.8vw, 2.4rem);
    line-height: 1.25;
  }

  .cta-banner p {
    color: var(--muted);
    max-width: 560px;
    margin: 0;
    font-size: 15px;
  }

  .cta-label {
    color: var(--gold);
    font-size: 13px;
    letter-spacing: 0.12em;
  }

  .site-footer {
    background: #0A0D12;
    border-top: 1px solid var(--border);
    padding: 64px 0 28px;
  }

  .footer-brand-mark {
    color: var(--goldlight);
    font-size: 22px;
    margin-bottom: 12px;
  }

  .footer-brand-name {
    font-size: 20px;
    font-weight: 600;
    color: var(--text);
    letter-spacing: 0.03em;
  }

  .footer-desc {
    color: var(--muted);
    font-size: 14px;
    line-height: 1.8;
    max-width: 300px;
    margin-top: 14px;
  }

  .footer-caption {
    font-size: 13px;
    color: #6E7785;
    letter-spacing: 0.1em;
    margin: 0 0 20px;
  }

  .footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .footer-links a {
    color: #9AA3B0;
    font-size: 14px;
    transition: color 0.2s ease, padding 0.2s ease;
  }

  .footer-links a:hover {
    color: var(--goldlight);
    padding-left: 4px;
  }

  .footer-bottom {
    margin-top: 48px;
    padding-top: 22px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 12px;
    color: #59616E;
  }

  @media (max-width: 1023px) {
    .sidebar {
      display: none;
    }

    .topbar {
      display: flex;
    }

    .site-main {
      margin-left: 0;
      padding-top: 64px;
    }

    .section {
      padding: 68px 0;
    }

    .wrap {
      width: min(100% - 40px, 760px);
    }
  }

  @media (max-width: 767px) {
    .section {
      padding: 54px 0;
    }

    .feature-row {
      grid-template-columns: 1fr;
      gap: 8px;
      padding: 24px 0;
    }

    .feat-go {
      justify-content: flex-start;
      margin-top: 12px;
    }

    .case-row {
      grid-template-columns: 1fr;
      gap: 12px;
      padding: 20px 2px;
    }

    .case-row .arr {
      display: none;
    }

    .plan-highlight {
      grid-template-columns: 1fr;
      padding: 24px;
    }

    .plan-price {
      text-align: left;
    }

    .plan-simple-row {
      grid-template-columns: 1fr;
      gap: 10px;
      padding: 20px;
    }

    .cta-banner {
      flex-direction: column;
      align-items: flex-start;
      padding: 30px;
    }

    .news-row,
    .news-row-feature {
      grid-template-columns: 1fr;
      padding: 12px;
    }

    .news-row img {
      max-height: 220px;
    }

    .footer-grid {
      grid-template-columns: 1fr;
      gap: 32px;
    }

    .hero {
      min-height: 520px;
      padding: 64px 0;
    }
  }

  @media (max-width: 520px) {
    .wrap {
      width: calc(100% - 28px);
    }

    .hero h1 {
      font-size: 32px;
    }

    .hero-actions {
      flex-direction: column;
      align-items: stretch;
    }

    .hero-actions .btn {
      width: 100%;
    }

    .btn {
      padding: 14px 20px;
    }

    .topbar {
      padding: 0 16px;
    }

    .footer-bottom {
      flex-direction: column;
      align-items: flex-start;
      gap: 8px;
    }

    .cta-banner {
      padding: 24px 20px;
    }
  }

/* roulang page: category1 */
:root {
            --bg: #0B0E14;
            --bg-panel: #11151C;
            --bg-card: #151B23;
            --text-main: #E9ECF2;
            --text-muted: #8C94A3;
            --accent: #C6A76D;
            --accent-soft: #DCC08A;
            --border: rgba(233, 236, 242, 0.08);
            --radius: 10px;
            --radius-sm: 6px;
            --radius-lg: 16px;
            --shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
            --font-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Source Han Sans CN", "Microsoft YaHei", sans-serif;
            --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg);
            color: var(--text-main);
            line-height: 1.75;
            letter-spacing: .01em;
            min-height: 100vh;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        input {
            font-family: inherit;
        }

        /* 布局容器 */
        .layout {
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        .main-wrap {
            flex: 1;
            width: 100%;
            max-width: 1480px;
            margin: 0 auto;
            padding: 0 4rem;
        }
        @media (max-width: 1280px) {
            .main-wrap {
                padding: 0 3rem;
            }
        }
        @media (max-width: 768px) {
            .main-wrap {
                padding: 0 1.25rem;
            }
        }

        /* 桌面端左侧竖向导航 */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: 228px;
            background: #0D1117;
            border-right: 1px solid rgba(233, 236, 242, 0.06);
            z-index: 50;
            display: flex;
            flex-direction: column;
            padding: 28px 20px;
            overflow-y: auto;
        }
        .brand-block {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 42px;
        }
        .brand-mark {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--accent);
            color: #0B0E14;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .brand-name {
            font-size: 19px;
            font-weight: 700;
            color: #fff;
            letter-spacing: .04em;
            white-space: nowrap;
        }
        .side-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .side-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 11px 14px;
            border-radius: 8px;
            font-size: 15px;
            color: var(--text-muted);
            border-left: 2px solid transparent;
            transition: background .2s, color .2s, border-color .2s;
            line-height: 1.4;
        }
        .side-nav a svg {
            width: 18px;
            height: 18px;
            flex-shrink: 0;
            stroke: currentColor;
            stroke-width: 1.6;
            fill: none;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .side-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.03);
        }
        .side-nav a.active {
            color: var(--accent-soft);
            border-left-color: var(--accent);
            background: rgba(198, 167, 109, 0.06);
        }
        .side-foot {
            margin-top: auto;
            padding: 18px 12px 0;
            font-size: 13px;
            color: #59616E;
            line-height: 1.7;
            border-top: 1px solid rgba(233, 236, 242, 0.06);
        }

        /* 移动端 / 平板导航 */
        .top-header {
            display: none;
            position: sticky;
            top: 0;
            z-index: 50;
            height: 64px;
            background: rgba(11, 14, 20, 0.95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid rgba(233, 236, 242, 0.08);
            align-items: center;
            padding: 0 20px;
        }
        .mobile-outside {
            display: none;
        }

        /* 内容主体 */
        .content-main {
            margin-left: 228px;
            width: calc(100% - 228px);
        }

        /* 背景图 hero */
        .hero-section {
            position: relative;
            background-image: url("/assets/images/backpic/back-1.png");
            background-size: cover;
            background-position: center;
            min-height: 100vh;
            display: flex;
            align-items: center;
        }
        .hero-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(10, 13, 19, 0.94) 0%, rgba(10, 13, 19, 0.76) 50%, rgba(10, 13, 19, 0.55) 100%);
        }

        /* 通用按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-size: 15px;
            font-weight: 600;
            padding: 13px 30px;
            border-radius: 8px;
            line-height: 1.3;
            transition: background .25s, border-color .25s, color .25s, box-shadow .25s;
            border: 1px solid transparent;
            outline: none;
            white-space: nowrap;
        }
        .btn:focus-visible,
        a:focus-visible {
            outline: 1px solid var(--accent);
            outline-offset: 3px;
        }
        .btn-gold {
            background: var(--accent);
            color: #0B0E14;
        }
        .btn-gold:hover {
            background: var(--accent-soft);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(198, 167, 109, 0.2);
        }
        .btn-gold:active {
            transform: translateY(0) scale(.98);
        }
        .btn-ghost {
            border-color: rgba(233, 236, 242, 0.25);
            color: var(--text-main);
            background: transparent;
        }
        .btn-ghost:hover {
            border-color: var(--accent);
            color: var(--accent-soft);
            transform: translateY(-2px);
        }
        .btn-ghost:active {
            transform: scale(.99);
        }

        /* 区块通用 */
        .block-section {
            padding: 92px 0;
        }
        .block-label {
            font-size: 12px;
            letter-spacing: .26em;
            color: var(--accent-soft);
            text-transform: uppercase;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .block-label::before {
            content: "";
            width: 16px;
            height: 1px;
            background: var(--accent);
            display: inline-block;
            flex-shrink: 0;
        }
        .section-title {
            font-size: 34px;
            font-weight: 700;
            letter-spacing: -.01em;
            line-height: 1.3;
            color: #fff;
        }
        .section-lead {
            font-size: 17px;
            color: var(--text-muted);
            margin-top: 10px;
            max-width: 640px;
        }
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            transition: transform .25s, border-color .25s, box-shadow .25s;
        }
        .card:hover {
            transform: translateY(-3px);
            border-color: rgba(198, 167, 109, 0.35);
            box-shadow: var(--shadow);
        }

        /* 编号行 功能 */
        .feature-row {
            display: flex;
            align-items: flex-start;
            gap: 32px;
            padding: 28px 0;
            border-bottom: 1px solid rgba(233, 236, 242, 0.07);
            transition: background .2s;
        }
        .feature-row:first-child {
            border-top: 1px solid rgba(233, 236, 242, 0.07);
        }
        .feature-row .f-num {
            font-family: var(--font-mono);
            font-size: 15px;
            color: var(--accent);
            letter-spacing: .05em;
            min-width: 44px;
            padding-top: 4px;
        }
        .feature-row .f-content {
            flex: 1;
            max-width: 900px;
        }
        .feature-row .f-title {
            font-size: 20px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 4px;
            transition: color .2s, transform .2s;
            display: inline-block;
        }
        .feature-row:hover .f-title {
            color: var(--accent-soft);
            transform: translateX(4px);
        }
        .feature-row .f-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* 场景列表 */
        .scenario-list {
            border-top: 1px solid rgba(233, 236, 242, 0.08);
        }
        .scenario-item {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            gap: 24px;
            padding: 26px 0;
            border-bottom: 1px solid rgba(233, 236, 242, 0.07);
            transition: background .2s;
        }
        .scenario-item:hover {
            background: rgba(255, 255, 255, 0.015);
        }
        .scenario-item .s-name {
            font-size: 14px;
            color: var(--accent-soft);
            font-weight: 600;
            min-width: 200px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .scenario-item .s-name i {
            font-style: normal;
            display: inline-flex;
            width: 22px;
            height: 22px;
            align-items: center;
            justify-content: center;
            font-size: 10px;
        }
        .scenario-item .s-desc {
            flex: 1;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 720px;
        }
        .scenario-item .s-link {
            color: var(--text-main);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 2px;
            white-space: nowrap;
        }
        .scenario-item .s-link:hover {
            color: var(--accent-soft);
        }

        /* 案例行 */
        .case-row {
            display: grid;
            grid-template-columns: 2fr 1.4fr 1fr;
            gap: 20px;
            padding: 24px 0;
            border-bottom: 1px solid rgba(233, 236, 242, 0.08);
            align-items: center;
            transition: background .2s;
        }
        .case-row:hover {
            background: rgba(255, 255, 255, 0.02);
            box-shadow: inset 3px 0 0 var(--accent);
        }
        .case-row .c-name {
            font-size: 17px;
            font-weight: 600;
            color: #fff;
        }
        .case-row .c-industry {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .case-row .c-industry::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
            opacity: .7;
        }
        .case-row .c-metric {
            font-family: var(--font-mono);
            font-size: 13px;
            color: var(--accent-soft);
        }

        /* 价格区 */
        .featured-price {
            background: var(--bg-card);
            border: 1px solid rgba(198, 167, 109, 0.35);
            border-radius: var(--radius-lg);
            padding: 20px 44px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            flex-wrap: wrap;
            margin-bottom: 14px;
        }
        .price-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 4px;
            border-bottom: 1px solid rgba(233, 236, 242, 0.06);
        }
        .price-row:last-child {
            border-bottom: none;
        }
        .price-row .p-name {
            color: var(--text-main);
            font-size: 15px;
            font-weight: 500;
        }
        .price-row .p-feature {
            color: var(--text-muted);
            font-size: 13px;
            margin-left: 12px;
        }
        .price-row .p-price {
            font-family: var(--font-mono);
            font-size: 17px;
            color: #fff;
            margin-left: auto;
            padding-left: 24px;
        }

        /* FAQ */
        .faq-item {
            border-bottom: 1px solid rgba(233, 236, 242, 0.08);
        }
        .faq-item:first-of-type {
            border-top: 1px solid rgba(233, 236, 242, 0.08);
        }
        .faq-item summary {
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 0;
            cursor: pointer;
            color: var(--text-main);
            font-size: 15px;
            font-weight: 600;
            transition: color .2s;
            user-select: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            color: var(--accent-soft);
        }
        .faq-item .faq-icon {
            width: 24px;
            height: 24px;
            position: relative;
            flex-shrink: 0;
            margin-left: 16px;
        }
        .faq-item .faq-icon::before,
        .faq-item .faq-icon::after {
            content: "";
            position: absolute;
            background: var(--accent-soft);
            border-radius: 1px;
            transition: transform .25s;
            top: 50%;
            left: 50%;
        }
        .faq-item .faq-icon::before {
            width: 12px;
            height: 1.5px;
            transform: translate(-50%, -50%);
        }
        .faq-item .faq-icon::after {
            width: 1.5px;
            height: 12px;
            transform: translate(-50%, -50%);
        }
        .faq-item[open] .faq-icon::after {
            transform: translate(-50%, -50%) scaleY(0);
        }
        .faq-item .faq-body {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.9;
            padding-bottom: 22px;
            max-width: 900px;
        }

        /* 资讯列表 2+1 结构 */
        .news-list {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 28px;
        }
        @media (max-width: 960px) {
            .news-list {
                grid-template-columns: 1fr;
            }
        }
        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: transform .25s, border-color .25s, box-shadow .25s;
        }
        .news-card:hover {
            transform: translateY(-4px);
            border-color: rgba(198, 167, 109, 0.35);
            box-shadow: var(--shadow);
        }
        .news-card .news-img {
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }
        .news-card .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-card .news-content {
            padding: 20px 24px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-card .news-meta {
            font-size: 12px;
            color: #68707E;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: color .2s;
        }
        .news-card:hover .news-meta {
            color: #8C94A3;
        }
        .news-card .news-cat {
            color: var(--accent-soft);
            font-size: 12px;
            border: 1px solid rgba(198, 167, 109, .3);
            padding: 2px 10px;
            border-radius: 4px;
        }
        .news-card h3 {
            font-size: 19px;
            line-height: 1.4;
            margin: 10px 0 8px;
            font-weight: 600;
            color: #fff;
        }
        .news-card p {
            color: var(--text-muted);
            font-size: 13px;
            line-height: 1.7;
            margin-top: 4px;
        }

        /* CTA区 */
        .cta-area {
            position: relative;
            background-image: url("/assets/images/backpic/back-3.png");
            background-size: cover;
            background-position: center;
            padding: 122px 0 110px;
            overflow: hidden;
        }
        .cta-area::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(11, 14, 20, 0.9);
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 32px;
        }

        /* footer */
        .site-footer {
            background: #0D1117;
            border-top: 1px solid rgba(233, 236, 242, 0.07);
            padding: 48px 0 0;
        }
        .site-footer .wrap {
            max-width: 1480px;
            margin: 0 auto;
            padding: 0 44px;
        }
        @media (max-width: 768px) {
            .site-footer .wrap {
                padding: 0 20px;
            }
        }
        .footer-grid {
            display: grid;
            gap: 28px;
        }
        .footer-brand-name {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: #7B8494;
            max-width: 320px;
            margin-top: 8px;
        }
        .footer-caption {
            font-size: 13px;
            color: #fff;
            font-weight: 500;
            margin-bottom: 14px;
            letter-spacing: .08em;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: #7B8494;
            line-height: 1.6;
        }
        .footer-links a:hover {
            color: var(--accent-soft);
        }
        .footer-bottom {
            border-top: 1px solid rgba(233, 236, 242, 0.07);
            margin-top: 32px;
            padding: 18px 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            color: #59616E;
            font-size: 12px;
        }

        /* 装饰星点 */
        .star-dots {
            position: absolute;
            inset: 0;
            pointer-events: none;
            opacity: .6;
            background-image: radial-gradient(rgba(255, 255, 255, 0.35) 1px, transparent 1px);
            background-size: 120px 120px;
            background-position: 40px 60px, 180px 20px;
        }

        /* 移动端适配 */
        @media (max-width: 1024px) {
            .sidebar {
                display: none;
            }
            .top-header {
                display: flex;
            }
            .mobile-outside {
                display: inline-flex;
                align-items: center;
                gap: 4px;
            }
            .content-main {
                margin-left: 0;
                width: 100%;
            }
            .hero-section {
                min-height: auto;
                padding-top: 100px;
            }
        }
        @media (max-width: 768px) {
            .main-wrap {
                padding: 0 18px;
            }
            .block-section {
                padding: 55px 0;
            }
            .section-title {
                font-size: 27px;
            }
            .feature-row {
                flex-direction: column;
                gap: 14px;
                padding: 22px 0;
            }
            .scenario-item {
                flex-direction: column;
                gap: 10px;
                padding: 20px 0;
            }
            .case-row {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .case-row .c-industry::before {
                content: "";
                width: 5px;
                height: 5px;
            }
            .featured-price {
                padding: 20px 14px;
                flex-direction: column;
            }
            .cta-area {
                background-image: url("/assets/images/backpic/back-1.png");
            }
        }
        @media (max-width: 480px) {
            .top-header {
                padding: 0 12px;
            }
            .brand-name {
                font-size: 16px;
            }
            .btn {
                padding: 12px 22px;
                font-size: 14px;
            }
            .hero-block .btn {
                width: calc(50% - 12px);
                text-wrap: nowrap;
                font-size: 13px;
                padding: 12px 10px;
                min-width: 130px;
            }
            .news-card .news-content {
                padding: 16px;
            }
        }

        /* 移动端顶部菜单 */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            left: 0;
            bottom: 0;
            background: rgba(11, 14, 20, 0.97);
            z-index: 60;
            padding-top: 80px;
            backdrop-filter: blur(10px);
        }
        .mobile-menu.open {
            display: flex;
            flex-direction: column;
        }
        .mobile-menu-item {
            font-size: 22px;
            padding: 18px 32px;
            color: var(--text-main);
        }

/* roulang page: article */
:root {
  --bg-body: #0B0E14;
  --bg-panel: #11151C;
  --bg-card: #151B23;
  --text-main: #E9ECF2;
  --text-muted: #8C94A3;
  --gold: #C6A76D;
  --gold-light: #DCC08A;
  --line: rgba(233, 236, 242, 0.08);
  --line-strong: rgba(233, 236, 242, 0.14);
  --sidebar-w: 112px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg-body);
  color: var(--text-main);
  font-family: "PingFang SC", "Hiragino Sans GB", "Source Han Sans CN", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* ===== Sidebar ===== */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-w);
  z-index: 50;
  background: #0E1218;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 30px 16px 22px;
}

.brand-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 44px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  background: var(--gold);
  color: #0B0E14;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  font-size: 22px;
  font-weight: 700;
  transition: background .2s, transform .2s;
}

.brand-mark:hover {
  background: var(--gold-light);
  transform: translateY(-1px);
}

.brand-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  text-align: center;
  letter-spacing: .08em;
  line-height: 1.35;
}

.side-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
}

.side-nav a {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 13px 4px;
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 13px;
  text-align: center;
  line-height: 1.25;
  letter-spacing: .02em;
  transition: color .2s, background .2s, transform .2s;
}

.side-nav a:hover {
  color: var(--text-main);
  background: rgba(198, 167, 109, .08);
  transform: translateY(-1px);
}

.side-nav a.active {
  color: var(--text-main);
  font-weight: 500;
}

.side-nav a.active::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 18px;
  background: var(--gold);
  border-radius: 0 2px 2px 0;
}

.side-foot {
  margin-top: auto;
  color: #59616E;
  font-size: 11px;
  line-height: 1.6;
  text-align: center;
  padding: 12px 0 4px;
  border-top: 1px solid var(--line);
  letter-spacing: .02em;
}

/* ===== Mobile header ===== */
.mobile-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: rgba(11, 14, 20, .94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
}

.mobile-brand {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: .06em;
}

.mobile-menu-btn {
  background: none;
  border: none;
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.mobile-menu-btn .bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
}

.nav-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .55);
  z-index: 45;
  opacity: 0;
  visibility: hidden;
  transition: opacity .25s;
}

.nav-backdrop.show {
  opacity: 1;
  visibility: visible;
}

/* ===== Main shell ===== */
.main-shell {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-footer {
  margin-top: auto;
}

/* ===== wrap / layout ===== */
.wrap {
  width: 100%;
  max-width: 1260px;
  margin: 0 auto;
  padding-left: 30px;
  padding-right: 30px;
}

.article-main {
  flex: 1;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  font-size: 13px;
  color: var(--text-muted);
  max-width: 900px;
  margin: 0 auto;
  padding: 58px 30px 0;
}

.breadcrumb a {
  transition: color .2s;
}

.breadcrumb a:hover {
  color: var(--gold);
}

.breadcrumb .sep {
  margin: 0 10px;
  color: #3D434F;
}

.breadcrumb .crumb-now {
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 280px;
}

/* ===== Article Detail ===== */
.article-detail {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 34px 30px 28px;
}

.article-detail-head {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.article-meta-top {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 18px;
}

.cat-pill {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: 12px;
  color: var(--gold-light);
  border: 1px solid rgba(198, 167, 109, .35);
  border-radius: 999px;
  letter-spacing: .03em;
}

.pub-time {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
}

.article-detail-head h1 {
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.25;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--text-main);
}

/* ===== Rich content ===== */
.article-content {
  font-size: 16px;
  line-height: 1.85;
  color: #C9CFD8;
}

.article-content > * + * {
  margin-top: 1.1em;
}

.article-content h2 {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-main);
  margin: 34px 0 14px;
  padding-left: 14px;
  border-left: 2px solid var(--gold);
  line-height: 1.4;
}

.article-content h3 {
  font-size: 20px;
  font-weight: 500;
  color: #DCE1E8;
  margin: 28px 0 10px;
}

.article-content h4 {
  font-size: 17px;
  font-weight: 500;
  color: #DCE1E8;
  margin: 20px 0 8px;
}

.article-content p {
  margin: 0;
}

.article-content a {
  color: var(--gold-light);
  border-bottom: 1px solid rgba(198, 167, 109, .3);
  transition: color .2s, border-color .2s;
}

.article-content a:hover {
  color: var(--gold);
  border-color: var(--gold);
}

.article-content img {
  border-radius: 10px;
  margin: 30px auto;
  height: auto;
}

.article-content blockquote {
  border-left: 2px solid var(--gold);
  padding: 4px 0 4px 18px;
  margin: 26px 0;
  color: #8C94A3;
  font-style: normal;
}

.article-content pre {
  background: #0E1218;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.7;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.article-content code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: rgba(233, 236, 242, .06);
  padding: 2px 5px;
  border-radius: 4px;
  font-size: .9em;
}

.article-content pre code {
  background: transparent;
  padding: 0;
}

.article-content ul,
.article-content ol {
  padding-left: 1.4rem;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 26px 0;
  font-size: 15px;
}

.article-content th,
.article-content td {
  border: 1px solid var(--line-strong);
  padding: 10px 12px;
  text-align: left;
}

.article-content th {
  background: rgba(233, 236, 242, .03);
  color: var(--text-main);
  font-weight: 500;
}

/* ===== Article tags ===== */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.tag-item {
  display: inline-block;
  padding: 6px 14px;
  font-size: 13px;
  color: var(--text-muted);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: transparent;
  transition: color .2s, border-color .2s;
}

.tag-item:hover {
  color: var(--gold-light);
  border-color: var(--gold);
}

/* ===== Detail bottom nav ===== */
.detail-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 36px;
  padding: 20px 0;
}

.detail-nav a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
  transition: color .2s;
}

.detail-nav a:hover {
  color: var(--gold-light);
}

/* ===== Not found ===== */
.article-missing {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  padding: 100px 30px;
}

.missing-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  color: var(--gold);
}

.missing-title {
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 8px;
}

.missing-sub {
  color: var(--text-muted);
  margin-bottom: 28px;
}

/* ===== Button ===== */
.btn-gold {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 28px;
  background: var(--gold);
  color: #0B0E14;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .03em;
  transition: background .2s, transform .2s, box-shadow .2s;
}

.btn-gold:hover {
  background: var(--gold-light);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(198, 167, 109, .18);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 28px;
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  font-size: 14px;
  transition: border-color .2s, color .2s, background .2s;
}

.btn-ghost:hover {
  border-color: var(--gold);
  color: var(--gold-light);
  background: rgba(198, 167, 109, .06);
}

/* ===== Related Section ===== */
.related-section {
  max-width: 1260px;
  margin: 0 auto;
  padding: 68px 30px 40px;
}

.related-intro .section-label,
.section-label {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.related-intro h2 {
  font-size: clamp(26px, 3.4vw, 38px);
  line-height: 1.25;
  font-weight: 600;
  letter-spacing: -.01em;
}

.related-intro p {
  color: var(--text-muted);
  max-width: 560px;
  margin-top: 12px;
  font-size: 15px;
}

.related-grid {
  margin-top: 40px;
}

.related-feature {
  display: block;
  position: relative;
  background: #11151C;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color .25s, transform .25s, box-shadow .25s;
}

.related-feature:hover {
  border-color: rgba(198, 167, 109, .5);
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, .25);
}

.related-feature .feature-cover {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.related-feature .feature-body {
  padding: 28px 28px 30px;
}

.feature-cat {
  color: var(--gold-light);
  font-size: 13px;
}

.related-feature h3 {
  font-size: 23px;
  line-height: 1.35;
  font-weight: 600;
  margin: 10px 0 10px;
}

.related-feature p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.7;
}

.feature-arrow,
.list-item-arrow {
  display: inline-flex;
  color: var(--gold);
  font-size: 18px;
  transition: transform .2s;
}

.related-feature:hover .feature-arrow,
.related-list-item:hover .list-item-arrow {
  transform: translateX(4px);
}

.related-list-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: #11151C;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px;
  transition: border-color .25s, background .25s;
}

.related-list-item:hover {
  border-color: rgba(198, 167, 109, .38);
  background: #151B23;
}

.related-list-item img {
  width: 96px;
  height: 74px;
  object-fit: cover;
  border-radius: 6px;
  flex-shrink: 0;
}

.list-item-cat {
  font-size: 12px;
  color: var(--gold);
  letter-spacing: .04em;
}

.related-list-item h3 {
  font-size: 15px;
  line-height: 1.45;
  font-weight: 600;
  color: var(--text-main);
  margin: 6px 0 6px;
}

.related-list-item p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ===== CTA ===== */
.article-cta {
  position: relative;
  margin: 40px 30px 0;
  border-radius: 16px;
  overflow: hidden;
  background:
    linear-gradient(rgba(11, 14, 20, .82), rgba(11, 14, 20, .9)),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
}

.article-cta .cta-inner {
  padding: 72px 38px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  flex-wrap: wrap;
}

.cta-copy h2 {
  font-size: clamp(22px, 2.6vw, 34px);
  font-weight: 600;
  letter-spacing: -.01em;
}

.cta-copy p {
  color: var(--text-muted);
  margin-top: 10px;
  max-width: 520px;
  font-size: 15px;
}

/* ===== Footer ===== */
.site-footer {
  background: #0C1017;
  border-top: 1px solid var(--line);
  padding: 60px 0 26px;
  width: 100%;
}

.footer-brand-name {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: .02em;
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
  max-width: 360px;
}

.footer-caption {
  font-size: 13px;
  color: #59616E;
  letter-spacing: .06em;
  margin-bottom: 16px;
  font-weight: 500;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 14px;
  transition: color .2s;
}

.footer-links a:hover {
  color: var(--gold-light);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
  border-top: 1px solid var(--line);
  margin-top: 50px;
  padding-top: 22px;
  color: #59616E;
  font-size: 13px;
}

/* ===== Responsive ===== */
@media (max-width: 1023.98px) {
  .sidebar {
    top: 60px;
    bottom: auto;
    width: 236px;
    padding: 26px 18px;
    border-right: none;
    border-bottom: 1px solid var(--line);
    transform: translateX(-100%);
    transition: transform .28s ease;
    box-shadow: 0 16px 40px rgba(0, 0, 0, .5);
    align-items: flex-start;
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .brand-block {
    align-items: flex-start;
    flex-direction: row;
    gap: 10px;
    margin-bottom: 26px;
    padding-left: 4px;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
    font-size: 20px;
    border-radius: 10px;
  }

  .brand-name {
    font-size: 14px;
    text-align: left;
    align-self: center;
  }

  .side-nav {
    gap: 8px;
  }

  .side-nav a {
    justify-content: flex-start;
    padding: 14px 16px;
    font-size: 15px;
    text-align: left;
  }

  .side-nav a.active::before {
    left: -4px;
    height: 16px;
  }

  .side-foot {
    font-size: 12px;
    text-align: left;
    padding-left: 4px;
  }

  .mobile-header {
    display: flex;
  }

  .main-shell {
    margin-left: 0;
    padding-top: 60px;
  }

  .nav-backdrop.show {
    opacity: 1;
    visibility: visible;
  }
}

@media (max-width: 768px) {
  .wrap {
    padding-left: 20px;
    padding-right: 20px;
  }

  .breadcrumb {
    padding: 32px 20px 0;
  }

  .breadcrumb .ramb-now,
  .breadcrumb .crumb-now {
    max-width: 150px;
  }

  .article-detail {
    padding: 26px 20px 18px;
  }

  .article-detail-head {
    margin-bottom: 26px;
  }

  .article-meta-top {
    gap: 12px;
  }

  .article-content {
    font-size: 15px;
    line-height: 1.8;
  }

  .related-section {
    padding: 48px 20px 28px;
  }

  .article-cta {
    margin: 30px 20px 0;
  }

  .article-cta .cta-inner {
    padding: 44px 24px;
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .breadcrumb {
    font-size: 12px;
  }

  .breadcrumb .sep {
    margin: 0 5px;
  }

  .article-detailhead h1 {
    font-size: 26px;
  }

  .article-content {
    line-height: 1.78;
  }
}

/* roulang page: category2 */
:root {
  --bg: #0B0E14;
  --panel: #11151C;
  --card: #151B23;
  --text: #E9ECF2;
  --muted: #8C94A3;
  --body: #A9B2C0;
  --gold: #C6A76D;
  --goldlight: #DCC08A;
  --line: rgba(233, 236, 242, 0.08);
  --strong-line: rgba(233, 236, 242, 0.14);
  --radius: 8px;
  --radius-sm: 4px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.22);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "Hiragino Sans GB", "Source Han Sans CN", "Microsoft YaHei", -apple-system, sans-serif;
  line-height: 1.7;
  letter-spacing: 0.01em;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  background: none;
  border: 0;
  padding: 0;
  font: inherit;
  color: inherit;
  cursor: pointer;
}

ul,
ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

figure {
  margin: 0;
}

::selection {
  background: rgba(198, 167, 109, 0.25);
  color: #fff;
}

:focus-visible {
  outline: 1px solid var(--goldlight);
  outline-offset: 3px;
  border-radius: 2px;
}

section[id],
div[id] {
  scroll-margin-top: 90px;
}

.page-shell {
  margin-left: 118px;
  min-height: 100vh;
  position: relative;
  overflow: hidden;
}

.main-wrap {
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(20px, 4vw, 60px);
  padding-right: clamp(20px, 4vw, 60px);
}

/* ===== Sidebar Navigation ===== */
.sidebar {
  position: fixed;
  z-index: 90;
  top: 0;
  bottom: 0;
  left: 0;
  width: 118px;
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, #0C1118 0%, #0A0D12 70%);
  border-right: 1px solid rgba(233, 236, 242, 0.06);
  padding: 26px 10px 22px;
}

.brand-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 4px 0 30px;
}

.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(198, 167, 109, 0.72);
  border-radius: 50%;
  color: var(--goldlight);
  font-size: 21px;
  font-weight: 500;
  background: rgba(198, 167, 109, 0.08);
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.brand-mark:hover {
  border-color: var(--goldlight);
  background: rgba(198, 167, 109, 0.16);
  color: #fff;
}

.brand-name {
  margin-top: 12px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: #F0F2F6;
  white-space: nowrap;
}

.side-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 10px;
}

.side-nav a {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 46px;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: #7C8493;
  border-left: 2px solid transparent;
  transition: color 0.2s ease, background 0.2s ease;
}

.side-nav a span {
  display: block;
  white-space: nowrap;
}

.side-nav a:hover,
.side-nav a:focus-visible {
  color: var(--text);
  background: rgba(233, 236, 242, 0.04);
}

.side-nav a.active {
  color: #F0F2F6;
}

.side-nav a.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  height: 22px;
  width: 2px;
  background: var(--gold);
  border-radius: 0 2px 2px 0;
}

.side-nav a.active span {
  color: #F6F7FA;
}

.side-foot {
  margin-top: auto;
  padding: 18px 10px 0;
  border-top: 1px solid rgba(233, 236, 242, 0.07);
  color: #59616E;
  font-size: 11px;
  line-height: 1.8;
  letter-spacing: 0.08em;
  text-align: center;
}

/* ===== Mobile Topbar ===== */
.mobile-topbar {
  display: none;
  position: sticky;
  top: 0;
  z-index: 80;
  height: 64px;
  align-items: center;
  gap: 14px;
  padding: 0 20px;
  background: rgba(11, 14, 20, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(233, 236, 242, 0.08);
}

.mobile-topbar .topbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.mobile-topbar .brand-mark {
  width: 34px;
  height: 34px;
  font-size: 17px;
}

.mobile-topbar .brand-name {
  padding: 0;
  margin: 0;
  font-size: 15px;
}

.menu-toggle {
  margin-left: auto;
  width: 40px;
  height: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border: 1px solid rgba(233, 236, 242, 0.16);
  border-radius: 4px;
  transition: border-color 0.2s ease;
}

.menu-toggle:hover {
  border-color: rgba(198, 167, 109, 0.6);
}

.menu-toggle .bar {
  display: block;
  width: 18px;
  height: 1px;
  background: #D6DAE2;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.mobile-drawer {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 70;
  padding: 26px 26px 36px;
  background: rgba(10, 13, 18, 0.98);
  backdrop-filter: blur(14px);
  overflow-y: auto;
}

.mobile-drawer.open {
  display: block;
}

.mobile-drawer nav {
  display: flex;
  flex-direction: column;
}

.mobile-drawer nav a {
  padding: 16px 0;
  font-size: 20px;
  color: #BBC1CC;
  border-bottom: 1px solid rgba(233, 236, 242, 0.07);
  letter-spacing: 0.02em;
  transition: color 0.2s ease, padding-left 0.25s ease;
}

.mobile-drawer nav a:hover {
  color: var(--goldlight);
  padding-left: 8px;
}

.mobile-drawer nav a.active {
  color: var(--goldlight);
}

.mobile-drawer .drawer-note {
  margin-top: 30px;
  color: #59616E;
  font-size: 13px;
  line-height: 1.9;
  letter-spacing: 0.04em;
}

/* ===== Hero ===== */
.cate-hero {
  position: relative;
  padding: clamp(58px, 8vw, 104px) 0 clamp(54px, 7vw, 84px);
  border-bottom: 1px solid rgba(233, 236, 242, 0.06);
  background:
    linear-gradient(180deg, rgba(7, 10, 16, 0.72) 0%, rgba(11, 14, 20, 0.94) 100%),
    url("/assets/images/backpic/back-1.png") center / cover no-repeat;
}

.cate-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(233, 236, 242, 0.24) 0.5px, transparent 0.9px);
  background-size: 48px 48px;
  opacity: 0.07;
}

.cate-hero .main-wrap {
  position: relative;
  z-index: 2;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
  color: var(--gold);
  font-size: 12px;
  letter-spacing: 0.28em;
}

.eyebrow::before {
  content: "";
  width: 30px;
  height: 1px;
  background: var(--gold);
  opacity: 0.9;
}

.cate-hero h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(38px, 4.6vw, 68px);
  font-weight: 650;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: #F2F4F8;
}

.cate-hero .brand-inline {
  color: var(--goldlight);
}

.hero-sub {
  max-width: 620px;
  margin: 26px 0 0;
  color: #B0B8C6;
  font-size: 16px;
  line-height: 1.95;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 34px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 46px;
  padding: 0 22px;
  border-radius: 4px;
  font-size: 15px;
  letter-spacing: 0.02em;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.btn-primary {
  background: var(--gold);
  color: #16130C;
  font-weight: 500;
  border: 1px solid transparent;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--goldlight);
}

.btn-ghost {
  background: rgba(17, 21, 28, 0.5);
  border: 1px solid rgba(233, 236, 242, 0.2);
  color: #DADDE3;
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: rgba(198, 167, 109, 0.78);
  color: var(--goldlight);
}

.btn-text {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #B7BEC9;
  font-size: 14px;
  transition: color 0.2s ease, gap 0.2s ease;
}

.btn-text:hover,
.btn-text:focus-visible {
  color: var(--goldlight);
  gap: 12px;
}

.arrow-symbol {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.hero-metrics {
  background: rgba(11, 14, 20, 0.56);
  border: 1px solid rgba(233, 236, 242, 0.1);
  border-radius: 10px;
  box-shadow: var(--shadow);
  padding: 20px 22px 18px;
  backdrop-filter: blur(6px);
}

.metric-caption {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #8B95A3;
  font-size: 12px;
  letter-spacing: 0.14em;
  margin-bottom: 14px;
}

.metric-caption::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 1px;
  transform: rotate(45deg);
  background: var(--gold);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 12px;
}

.metric-box {
  padding-left: 13px;
  border-left: 1px solid rgba(233, 236, 242, 0.12);
}

.metric-value {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 27px;
  font-weight: 500;
  color: #F0F2F6;
  line-height: 1.3;
}

.metric-value small {
  color: var(--goldlight);
  font-size: 12px;
  margin-left: 2px;
}

.metric-label {
  font-size: 12px;
  color: #717988;
  letter-spacing: 0.04em;
  margin-top: 1px;
}

/* ===== Quick anchors ===== */
.quick-anchors-wrap {
  background: #0D1117;
  border-bottom: 1px solid rgba(233, 236, 242, 0.05);
}

.quick-anchors {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  padding: 18px 0;
}

.quick-anchors a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: #8992A1;
  font-size: 13px;
  letter-spacing: 0.04em;
  transition: color 0.2s ease;
}

.quick-anchors a::before {
  content: "/";
  color: #4A515E;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.quick-anchors a:hover,
.quick-anchors a:focus-visible {
  color: var(--goldlight);
}

/* ===== Section header ===== */
.section-block {
  border-bottom: 1px solid rgba(233, 236, 242, 0.055);
}

.section-head {
  margin-bottom: clamp(36px, 5vw, 60px);
}

.sec-kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  letter-spacing: 0.26em;
  color: var(--gold);
}

.sec-kicker::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--gold);
}

.sec-title {
  margin: 18px 0 12px;
  font-size: clamp(28px, 3.4vw, 46px);
  line-height: 1.28;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: #F0F2F6;
}

.sec-lead {
  max-width: 760px;
  margin: 0;
  color: #959EAC;
  font-size: 15px;
  line-height: 1.9;
}

/* ===== Media rows ===== */
.media-window {
  background: transparent;
}

.media-row {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: clamp(24px, 4.8vw, 70px);
  align-items: center;
  padding: clamp(44px, 6vw, 84px) 0;
}

.media-row + .media-row {
  border-top: 1px solid rgba(233, 236, 242, 0.06);
}

.media-viz {
  overflow: hidden;
  position: relative;
  background: #0D121B;
  border: 1px solid rgba(233, 236, 242, 0.09);
  border-radius: 8px;
}

.media-viz img {
  width: 100%;
  height: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.04);
  transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1), filter 0.4s ease;
}

.media-row:nth-child(1):hover .media-viz img,
.media-viz:hover img {
  transform: scale(1.015);
  filter: saturate(1) contrast(1.06);
}

.viz-caption {
  position: absolute;
  left: 12px;
  bottom: 12px;
  background: rgba(7, 10, 15, 0.72);
  border: 1px solid rgba(233, 236, 242, 0.1);
  border-radius: 4px;
  padding: 5px 10px;
  font-size: 11px;
  color: #B9C0CA;
  letter-spacing: 0.06em;
  backdrop-filter: blur(4px);
}

.viz-caption .mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: var(--gold);
}

.media-copy {
  max-width: 540px;
}

.media-step {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.media-step::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--gold);
  opacity: 0.75;
}

.media-title {
  margin: 16px 0 14px;
  font-size: clamp(24px, 2.4vw, 34px);
  line-height: 1.35;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: #EEF1F6;
}

.media-copy p {
  margin: 0;
  color: #98A2B1;
  font-size: 15px;
  line-height: 1.9;
}

.tick-list {
  display: grid;
  gap: 9px;
  margin-top: 22px;
}

.tick-list li {
  position: relative;
  padding-left: 26px;
  color: #C0C7D1;
  font-size: 14px;
  line-height: 1.7;
}

.tick-list li::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 0.72em;
  width: 7px;
  height: 7px;
  border-radius: 1px;
  transform: rotate(45deg);
  background: var(--gold);
  opacity: 0.85;
}

/* ===== Process timeline ===== */
.process-section {
  background: #0C1016;
  border-top: 1px solid rgba(233, 236, 242, 0.06);
  border-bottom: 1px solid rgba(233, 236, 242, 0.06);
}

.flow-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 10px;
  border-top: 1px solid rgba(233, 236, 242, 0.08);
  border-left: 1px solid rgba(233, 236, 242, 0.08);
}

.flow-step {
  min-height: 190px;
  padding: 28px 24px 30px;
  border-right: 1px solid rgba(233, 236, 242, 0.08);
  border-bottom: 1px solid rgba(233, 236, 242, 0.08);
  background: transparent;
  transition: background 0.25s ease, border-color 0.25s ease;
}

.flow-step:hover {
  background: rgba(198, 167, 109, 0.035);
}

.flow-step .step-index {
  display: block;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  color: var(--gold);
  letter-spacing: 0.08em;
  margin-bottom: 18px;
}

.flow-step h3 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  color: #E7EBF0;
}

.flow-step p {
  margin: 0;
  color: #7E8796;
  font-size: 13px;
  line-height: 1.8;
}

/* ===== Scene list ===== */
.scene-section {
  border-bottom: 1px solid rgba(233, 236, 242, 0.06);
}

.scene-list {
  border-top: 1px solid rgba(233, 236, 242, 0.08);
}

.scene-row {
  display: grid;
  grid-template-columns: 180px 1fr auto;
  gap: 24px;
  padding: 26px 0;
  border-bottom: 1px solid rgba(233, 236, 242, 0.07);
  align-items: start;
  transition: padding-left 0.2s ease;
}

.scene-row:hover {
  padding-left: 8px;
}

.scene-name h3 {
  margin: 0;
  font-size: 16px;
  color: #E6EAF0;
  font-weight: 600;
  line-height: 1.5;
}

.scene-name .scene-type {
  display: block;
  margin-top: 5px;
  color: #6B7382;
  font-size: 12px;
}

.scene-info p {
  margin: 0;
  max-width: 620px;
  color: #929CAB;
  font-size: 14px;
  line-height: 1.85;
}

.scene-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--gold);
  font-size: 13px;
  white-space: nowrap;
  transition: gap 0.2s ease;
}

.scene-link:hover {
  gap: 12px;
}

.scene-link .arrow-symbol {
  font-size: 15px;
}

/* ===== Metric strip ===== */
.metric-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid rgba(233, 236, 242, 0.1);
  border-bottom: 1px solid rgba(233, 236, 242, 0.1);
  margin: 78px 0 0;
}

.metric-strip-item {
  padding: 26px 26px 24px;
  border-right: 1px solid rgba(233, 236, 242, 0.08);
}

.metric-strip-item:first-child {
  padding-left: 4px;
}

.metric-strip-item:last-child {
  border-right: 0;
}

.metric-strip-item .m-value {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 32px;
  line-height: 1;
  color: var(--goldlight);
}

.metric-strip-item .m-label {
  display: block;
  margin-top: 9px;
  color: #77808F;
  font-size: 13px;
  letter-spacing: 0.04em;
}

/* ===== FAQ ===== */
.faq-section {
  border-bottom: 1px solid rgba(233, 236, 242, 0.06);
}

.faq-list {
  max-width: 920px;
  margin-top: 6px;
}

.faq-item {
  background: rgba(17, 21, 28, 0.42);
  border: 1px solid rgba(233, 236, 242, 0.09);
  border-radius: 6px;
  margin-top: 12px;
  overflow: hidden;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.faq-item[open] {
  background: rgba(17, 21, 28, 0.72);
  border-color: rgba(198, 167, 109, 0.36);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  list-style: none;
  cursor: pointer;
  padding: 19px 20px 19px 22px;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-question {
  font-weight: 500;
  font-size: 15px;
  line-height: 1.6;
  color: #D9DEE5;
  transition: color 0.2s ease;
}

.faq-item summary:hover .faq-question {
  color: var(--goldlight);
}

.faq-icon {
  position: relative;
  flex: 0 0 17px;
  width: 17px;
  height: 17px;
  transform: rotate(0deg);
  transition: transform 0.25s ease;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  background: #9AA4B2;
  transition: background 0.2s ease;
}

.faq-icon::before {
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1px;
  transform: translateX(-50%);
}

.faq-icon::after {
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  transform: translateY(-50%);
}

.faq-item[open] .faq-icon {
  transform: rotate(135deg);
}

.faq-item[open] .faq-icon::before,
.faq-item[open] .faq-icon::after {
  background: var(--gold);
}

.faq-answer {
  padding: 0 24px 22px;
  color: #949EAC;
  font-size: 14px;
  line-height: 1.9;
}

.faq-answer p {
  margin: 0;
}

/* ===== Closing CTA ===== */
.closing-cta {
  position: relative;
  padding: clamp(76px, 9vw, 130px) 0;
  background:
    linear-gradient(rgba(6, 9, 14, 0.82), rgba(8, 11, 16, 0.9)),
    url("/assets/images/backpic/back-3.png") center / cover no-repeat;
  border-bottom: 1px solid rgba(233, 236, 242, 0.07);
  overflow: hidden;
}

.closing-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(233, 236, 242, 0.2) 0.5px, transparent 0.9px);
  background-size: 56px 56px;
  opacity: 0.05;
  pointer-events: none;
}

.closing-inner {
  position: relative;
  z-index: 2;
  max-width: 860px;
}

.closing-inner .cta-label {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--gold);
  font-size: 12px;
  letter-spacing: 0.24em;
}

.closing-inner .cta-label::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--gold);
}

.closing-inner h2 {
  margin: 20px 0 18px;
  font-size: clamp(30px, 4vw, 54px);
  line-height: 1.22;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: #F0F2F6;
}

.closing-inner p {
  margin: 0 0 30px;
  color: #A3ACBA;
  font-size: 16px;
  line-height: 1.95;
}

.closing-inner .closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ===== Footer ===== */
.site-footer {
  background: #090C11;
  border-top: 1px solid rgba(233, 236, 242, 0.07);
}

.site-footer .wrap {
  max-width: 1320px;
  margin: 0 auto;
  padding: 56px clamp(20px, 4vw, 60px) 28px;
}

.footer-brand-name {
  font-size: 20px;
  font-weight: 600;
  color: #EDF0F4;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

.footer-desc {
  margin: 8px 0 0;
  max-width: 320px;
  color: #7D8594;
  font-size: 13px;
  line-height: 1.85;
}

.footer-caption {
  color: #737B8B;
  font-size: 12px;
  letter-spacing: 0.18em;
  margin: 0 0 13px;
  padding-top: 4px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  color: #9AA3B1;
  font-size: 14px;
  transition: color 0.2s ease, padding-left 0.25s ease;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--goldlight);
  padding-left: 5px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 44px;
  padding-top: 20px;
  border-top: 1px solid rgba(233, 236, 242, 0.07);
  color: #555D6C;
  font-size: 12px;
  letter-spacing: 0.03em;
}

.mono,
.footer-bottom .mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .sidebar {
    display: none;
  }

  .page-shell {
    margin-left: 0;
  }

  .mobile-topbar {
    display: flex;
  }

  .cate-hero {
    padding-top: 48px;
  }

  .flow-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .metric-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .metric-strip-item {
    margin-bottom: 0;
    border-bottom: 1px solid rgba(233, 236, 242, 0.08);
  }
}

@media (max-width: 720px) {
  .cate-hero h1 {
    font-size: 38px;
  }

  .hero-sub {
    font-size: 15px;
  }

  .media-row,
  .media-row.is-reverse {
    grid-template-columns: minmax(0, 1fr);
    padding: 48px 0;
  }

  .media-copy {
    max-width: none;
  }

  .scene-row {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 24px 0;
  }

  .scene-row:hover {
    padding-left: 0;
  }

  .scene-link {
    justify-self: start;
  }

  .flow-grid {
    grid-template-columns: 1fr;
  }

  .metric-strip {
    grid-template-columns: 1fr;
  }

  .metric-strip-item:first-child {
    padding-left: 26px;
  }

  .footer-bottom {
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .quick-anchors {
    gap: 6px 12px;
  }

  .btn {
    width: 100%;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .closing-inner .closing-actions {
    flex-direction: column;
  }

  .closing-inner .closing-actions .btn {
    width: 100%;
  }

  .topbar-brand .brand-name {
    font-size: 15px;
  }
}

/* roulang page: category3 */
:root {
  --bg: #0B0E14;
  --bg2: #0D1118;
  --panel: #11151C;
  --card: #151B23;
  --text: #E9ECF2;
  --muted: #8C94A3;
  --dim: #59616E;
  --gold: #C6A76D;
  --gold-light: #DCC08A;
  --line: rgba(233,236,242,0.08);
  --line2: rgba(233,236,242,0.16);
  --radius: 6px;
  --radius-lg: 10px;
  --tr: .24s ease;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "Source Han Sans SC", "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: .4;
  background:
    radial-gradient(circle at 15% 18%, rgba(255,255,255,.26) 0 1px, transparent 1.6px),
    radial-gradient(circle at 78% 9%, rgba(198,167,109,.22) 0 1px, transparent 1.8px),
    radial-gradient(circle at 38% 72%, rgba(255,255,255,.16) 0 1px, transparent 1.6px),
    radial-gradient(circle at 88% 45%, rgba(255,255,255,.13) 0 1px, transparent 1.6px),
    radial-gradient(circle at 60% 28%, rgba(198,167,109,.15) 0 1px, transparent 1.7px);
  background-size: 260px 220px, 320px 280px, 200px 240px, 340px 300px, 280px 260px;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; background: none; border: 0; cursor: pointer; }
:focus-visible { outline: 1px solid var(--gold); outline-offset: 3px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace; font-variant-numeric: tabular-nums; }
.wrap { width: min(1200px, 100% - 48px); margin-inline: auto; }

/* 桌面左侧导航 */
.sidebar {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 90;
  width: 112px;
  background: var(--bg2);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 22px 10px 16px;
}
.brand-block { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.brand-mark {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: 12px;
  border: 1px solid rgba(198,167,109,.4);
  background: linear-gradient(150deg, rgba(198,167,109,.2), rgba(198,167,109,0));
  color: var(--gold-light);
  font-size: 26px; font-weight: 700;
}
.brand-name { color: var(--text); font-size: 15px; font-weight: 600; letter-spacing: .08em; white-space: nowrap; }
.brand-name:hover { color: var(--gold-light); }
.side-nav {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 2px;
  width: 100%;
  margin-top: 26px;
}
.side-nav a {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 11px 4px 9px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .06em;
  border-radius: 8px;
  text-align: center;
  transition: color var(--tr), background var(--tr);
}
.side-nav a .ic { width: 20px; height: 20px; display: block; }
.side-nav a:hover { color: var(--text); background: rgba(255,255,255,.03); }
.side-nav a.active { color: var(--gold-light); background: rgba(198,167,109,.07); }
.side-nav a.active::before {
  content: "";
  position: absolute;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  width: 2px;
  height: 28px;
  border-radius: 2px;
  background: var(--gold);
}
.side-foot {
  margin-top: auto;
  text-align: center;
  font-size: 10px;
  letter-spacing: .1em;
  line-height: 1.9;
  color: var(--dim);
  border-top: 1px solid var(--line);
  padding-top: 14px;
  width: 100%;
}

/* 移动端顶部导航 */
.mobile-header { display: none; }
@media (max-width: 1023px) {
  .sidebar { display: none; }
  .mobile-header {
    position: fixed;
    top: 0; left: 0; right: 0; z-index: 100;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    background: rgba(10,13,19,.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
  }
  .mobile-brand { font-weight: 700; font-size: 18px; letter-spacing: .06em; color: var(--text); }
  .menu-btn { width: 40px; height: 40px; display: grid; place-items: center; color: var(--text); }
  .menu-btn span { display: block; width: 20px; height: 1.6px; background: currentColor; transition: var(--tr); position: relative; }
  .menu-btn span::before, .menu-btn span::after { content: ""; position: absolute; left: 0; width: 20px; height: 1.6px; background: currentColor; transition: var(--tr); }
  .menu-btn span::before { top: -6px; }
  .menu-btn span::after { top: 6px; }
  .menu-btn.open span { background: transparent; }
  .menu-btn.open span::before { top: 0; transform: rotate(45deg); }
  .menu-btn.open span::after { top: 0; transform: rotate(-45deg); }
  .mobile-nav {
    display: none;
    position: fixed;
    top: 64px; left: 0; right: 0; z-index: 99;
    background: rgba(11,14,20,.98);
    border-bottom: 1px solid var(--line2);
    padding: 10px 20px 14px;
  }
  .mobile-nav.open { display: block; }
  .mobile-nav a { display: flex; align-items: center; gap: 12px; padding: 13px 4px; color: var(--muted); font-size: 18px; border-bottom: 1px solid var(--line); }
  .mobile-nav a:last-child { border-bottom: 0; }
  .mobile-nav a.active { color: var(--gold-light); }
}

/* 内容区 */
.page-body { margin-left: 112px; min-height: 100vh; display: flex; flex-direction: column; position: relative; z-index: 1; }
@media (max-width: 1023px) {
  .page-body { margin-left: 0; padding-top: 64px; }
}

/* 通用区块 */
.main-section { padding: 76px 0; }
@media (max-width: 767px) { .main-section { padding: 52px 0; } }
.sect-kicker { font-size: 12px; letter-spacing: .2em; color: var(--gold); text-transform: uppercase; }
.sect-title { font-size: clamp(26px, 3.2vw, 38px); line-height: 1.3; letter-spacing: .01em; margin-top: 12px; margin-bottom: 16px; }
.sect-lead { color: var(--muted); font-size: 16px; max-width: 42em; }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 46px; padding: 0 24px;
  border-radius: 4px;
  font-size: 15px; font-weight: 600;
  line-height: 1; white-space: nowrap;
  transition: all var(--tr);
}
.btn-primary { background: var(--gold); color: #10141B; }
.btn-primary:hover { background: var(--gold-light); transform: translateY(-1px); box-shadow: 0 10px 30px rgba(198,167,109,.15); }
.btn-ghost { border: 1px solid var(--line2); color: #D9DEE6; background: transparent; }
.btn-ghost:hover { border-color: var(--gold); color: var(--gold-light); }
.btn-lg { height: 52px; padding: 0 32px; font-size: 16px; }
.arr { display: inline-block; transition: transform var(--tr); }
.btn:hover .arr { transform: translateX(4px); }

/* 标签 */
.tag { display: inline-block; padding: 3px 10px; border: 1px solid rgba(198,167,109,.28); color: var(--gold-light); border-radius: 999px; font-size: 12px; letter-spacing: .04em; line-height: 1.6; }

/* Hero */
.category-hero {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: flex-end;
  padding: 72px 0 64px;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.category-hero::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(11,14,20,.96) 0%, rgba(11,14,20,.72) 50%, rgba(11,14,20,.45) 100%);
}
.category-hero .wrap { position: relative; z-index: 2; }
.hero-eyebrow { display: flex; align-items: center; gap: 10px; color: var(--gold-light); font-size: 13px; letter-spacing: .18em; margin-bottom: 18px; }
.hero-eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--gold); }
.category-hero h1 { font-size: clamp(32px, 4.4vw, 54px); line-height: 1.22; letter-spacing: .01em; max-width: 13em; margin-bottom: 18px; }
.category-hero .lead { color: #BFC6D1; max-width: 40em; font-size: 16px; margin-top: 14px; margin-bottom: 28px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-stats { display: flex; flex-wrap: wrap; gap: 34px; margin-top: 44px; }
.hero-stats dt { color: var(--dim); font-size: 12px; letter-spacing: .14em; }
.hero-stats dd { color: var(--gold-light); font-size: 26px; font-family: ui-monospace, Menlo, Consolas, monospace; margin-top: 2px; }

/* 导语 split */
.intro-split { border-bottom: 1px solid var(--line); }
.guide-anchors { display: flex; flex-direction: column; gap: 2px; }
.guide-anchors a {
  display: flex; align-items: center; justify-content: space-between;
  padding: 13px 2px;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  transition: color var(--tr), padding-left var(--tr);
}
.guide-anchors a::after { content: "→"; color: var(--dim); transition: transform var(--tr); }
.guide-anchors a:hover { color: var(--gold-light); padding-left: 6px; }
.guide-anchors a:hover::after { transform: translateX(3px); color: var(--gold); }
.intro-num { font-size: 30px; color: rgba(198,167,109,.32); font-family: ui-monospace, Menlo, Consolas, monospace; }
.check-list { display: grid; gap: 10px; margin-top: 20px; }
.check-list li { list-style: none; padding-left: 24px; position: relative; color: #AAB2C0; font-size: 15px; }
.check-list li::before { content: "◆"; position: absolute; left: 0; top: 0; color: var(--gold); font-size: 10px; }
.img-frame { position: relative; border-radius: 10px; overflow: hidden; border: 1px solid var(--line2); }
.img-frame img { width: 100%; object-fit: cover; }
.img-cap { position: absolute; left: 0; right: 0; bottom: 0; padding: 34px 18px 14px; background: linear-gradient(transparent, rgba(8,10,15,.88)); color: #dfe4ec; font-size: 13px; }
@media (max-width:767px){ .img-cap { position: static; background: var(--panel); padding: 10px 12px; font-size: 13px; } }

/* 影像三大主题 */
.catalog-lead { border-left: 2px solid var(--gold); padding: 4px 0 4px 18px; font-size: 17px; line-height: 1.8; color: #CCD3DE; }
.topic-item { border: 1px solid var(--line); border-radius: 12px; background: rgba(21,27,35,.4); overflow: hidden; }
.topic-item + .topic-item { margin-top: 30px; }
.topic-media { position: relative; min-height: 210px; }
.topic-media img { width: 100%; height: 100%; object-fit: cover; min-height: 210px; }
.topic-media .photo-tag { position: absolute; top: 14px; left: 14px; background: rgba(10,13,20,.7); border: 1px solid rgba(198,167,109,.4); color: var(--gold-light); font-size: 12px; padding: 3px 11px; border-radius: 999px; letter-spacing: .08em; }
.topic-body { padding: 24px 26px 26px; }
.topic-index { color: rgba(198,167,109,.4); font-size: 14px; letter-spacing: .12em; }
.topic-body h3 { font-size: 24px; line-height: 1.35; margin: 8px 0 12px; }
.topic-body p { color: #A7AFBC; font-size: 15px; line-height: 1.85; margin-bottom: 16px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; }
@media (min-width:1024px) {
  .topic-grid { display: grid; grid-template-columns: 1fr 1.15fr; }
  .topic-media, .catalog-media { min-height: 320px; }
  .topic-media img, .catalog-media img { height: 100%; min-height: 320px; }
}

/* 流程 */
.workflow-steps { counter-reset: step; display: grid; gap: 0; }
.workflow-item {
  display: flex; gap: 26px;
  border-top: 1px solid var(--line);
  padding: 24px 4px;
}
.workflow-item:last-child { border-bottom: 1px solid var(--line); }
.workflow-num { color: var(--gold); font-size: 30px; line-height: 1; width: 70px; flex: 0 0 70px; font-family: ui-monospace, Menlo, Consolas, monospace; }
.workflow-item h3 { font-size: 20px; margin-bottom: 6px; }
.workflow-item p { color: var(--muted); max-width: 50em; }

/* 场景 */
.scene-row { border-bottom: 1px solid var(--line); padding: 28px 0; display: flex; flex-wrap: wrap; gap: 20px; }
.scene-row:first-of-type { border-top: 1px solid var(--line); }
.scene-title { flex: 0 0 220px; font-size: 20px; font-weight: 600; }
.scene-desc { flex: 1 1 300px; color: #A7AFBC; }
.scene-desc p { margin-top: 6px; max-width: 60em; }

/* FAQ */
.faq-wrap { display: grid; gap: 0; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item:first-child { border-top: 1px solid var(--line); }
.faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 4px;
  color: var(--text);
  font-size: 17px;
  font-weight: 600;
  cursor: pointer;
  transition: color var(--tr);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--gold-light); }
.faq-item summary::after { content: "+"; font-size: 22px; font-weight: 400; color: var(--gold); transition: transform var(--tr); line-height: 1; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-answer { color: var(--muted); line-height: 1.9; padding: 2px 4px 24px; max-width: 60em; }
.faq-answer a { color: var(--gold-light); border-bottom: 1px solid rgba(198,167,109,.3); }

/* CTA */
.cta-band {
  position: relative;
  margin-top: 60px;
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  border-top: 1px solid var(--line);
  overflow: hidden;
}
.cta-band::before { content: ""; position: absolute; inset: 0; background: rgba(9,12,18,.78); }
.cta-inner { position: relative; z-index: 2; padding: 70px 0; }
.cta-inner h2 { font-size: clamp(26px, 3vw, 40px); max-width: 16em; margin-bottom: 14px; }
.cta-inner p { color: #B9C0CB; max-width: 42em; }

/* Footer */
.site-footer {
  margin-top: 0;
  padding: 56px 0 22px;
  background: #0A0D13;
  border-top: 1px solid var(--line);
}
.footer-grid { width: min(1200px, 100% - 48px); margin-inline: auto; }
.footer-brand-name { color: var(--gold-light); font-size: 24px; font-weight: 700; margin-bottom: 12px; letter-spacing: .04em; }
.footer-desc { color: #98A0AE; font-size: 14px; line-height: 1.85; }
.footer-caption { color: #68707E; font-size: 12px; letter-spacing: .16em; margin-bottom: 12px; }
.footer-links a { display: block; color: #A5ADBA; font-size: 14px; padding: 4px 0; transition: color var(--tr), padding-left var(--tr); }
.footer-links a:hover { color: var(--gold-light); padding-left: 5px; }
.footer-soTrad { width: min(1200px, 100% - 48px); margin-inline: auto; border-top: 1px solid var(--line); margin-top: 32px; padding-top: 18px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; color: var(--dim); font-size: 12px; }