/* roulang page: index */
:root {
    --bg-base: #F7F4EF;
    --bg-deep: #161411;
    --bg-panel: #EFEBE4;
    --brand: #B87B28;
    --brand-deep: #8E5C1E;
    --brand-soft: #F0E6D6;
    --ink: #1C1B18;
    --ink-2: #5C5A55;
    --ink-3: #8A877F;
    --ink-invert: #F2EFE9;
    --line: #DCD7CE;
    --line-deep: #3A362F;
    --radius-card: 16px;
    --radius-btn: 999px;
    --shadow-card: 0px 1px 3px rgba(22,18,12,0.06), 0px 8px 24px rgba(22,18,12,0.05);
    --shadow-hover: 0px 2px 6px rgba(22,18,12,0.08), 0px 12px 32px rgba(22,18,12,0.09);
    --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    background: var(--bg-base);
    color: var(--ink);
    font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.75;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

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

  a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s var(--ease);
  }

  a:hover {
    color: var(--brand);
  }

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

  button, input, textarea {
    font-family: inherit;
    outline: none;
  }

  .container {
    max-width: 1280px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
  }

  @media (min-width: 1024px) {
    .container {
      padding-left: 32px;
      padding-right: 32px;
    }
  }

  section {
    scroll-margin-top: 80px;
  }

  /* ===== Header ===== */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 72px;
    z-index: 50;
    transition: background 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
    border-bottom: 1px solid transparent;
  }

  .site-header.scrolled {
    background: rgba(247, 244, 239, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom-color: var(--line);
    box-shadow: 0 4px 20px rgba(22, 18, 12, 0.04);
  }

  .site-header.scrolled .nav-link,
  .site-header.scrolled .dropdown-toggle,
  .site-header.scrolled .site-logo {
    color: var(--ink);
  }

  .site-header.scrolled .nav-link::after {
    background: var(--brand);
  }

  .header-grid {
    height: 72px;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 16px;
  }

  .site-logo {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 0.01em;
    color: var(--ink-invert);
    white-space: nowrap;
    text-align: center;
    transition: color 0.3s var(--ease);
  }

  .site-logo:hover {
    color: var(--brand);
  }

  .nav-left {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
  }

  .nav-right {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 8px;
  }

  .nav-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 8px 14px;
    color: rgba(242, 239, 233, 0.85);
    font-size: 15px;
    font-weight: 500;
    border-radius: 999px;
    position: relative;
  }

  .nav-link::after {
    content: '';
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 2px;
    height: 2px;
    border-radius: 2px;
    background: transparent;
    transition: background 0.3s var(--ease);
  }

  .nav-link:hover {
    color: var(--brand);
    background: rgba(184, 123, 40, 0.08);
  }

  .nav-link:hover::after {
    background: var(--brand);
  }

  .nav-link.active {
    color: var(--brand);
  }

  .dropdown-toggle {
    background: none;
    border: none;
    cursor: pointer;
  }

  .chevron {
    font-size: 11px;
    margin-left: 2px;
    opacity: 0.7;
    transition: transform 0.3s var(--ease);
  }

  .nav-item {
    position: relative;
  }

  .nav-item:hover .chevron {
    transform: rotate(180deg);
  }

  .dropdown-menu {
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    min-width: 200px;
    background: var(--bg-base);
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: var(--shadow-hover);
    padding: 10px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s var(--ease);
  }

  .dropdown-menu::before {
    content: '';
    position: absolute;
    top: -14px;
    left: 0;
    right: 0;
    height: 14px;
  }

  .nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
  }

  .dropdown-menu a {
    display: block;
    padding: 10px 14px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    color: var(--ink);
  }

  .dropdown-menu a:hover {
    background: var(--brand-soft);
    color: var(--brand-deep);
  }

  .mobile-toggle {
    display: none;
    background: none;
    border: 1px solid rgba(242, 239, 233, 0.4);
    border-radius: 10px;
    width: 44px;
    height: 44px;
    color: var(--ink-invert);
    font-size: 20px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: all 0.3s var(--ease);
  }

  .site-header.scrolled .mobile-toggle {
    border-color: var(--line);
    color: var(--ink);
  }

  .mobile-toggle:hover {
    border-color: var(--brand);
    color: var(--brand);
  }

  .mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    background: var(--bg-base);
    z-index: 60;
    padding: 96px 32px 40px;
    flex-direction: column;
    overflow-y: auto;
  }

  .mobile-menu.open {
    display: flex;
  }

  .mobile-menu a {
    display: flex;
    align-items: center;
    min-height: 52px;
    padding: 0 12px;
    border-bottom: 1px solid var(--line);
    font-size: 17px;
    font-weight: 600;
    color: var(--ink);
  }

  .mobile-menu a:hover {
    color: var(--brand);
    background: var(--brand-soft);
  }

  .mobile-menu-close {
    position: absolute;
    top: 16px;
    right: 20px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--ink);
    background: none;
    border: none;
    cursor: pointer;
    border-radius: 10px;
  }

  .mobile-menu-close:hover {
    background: var(--brand-soft);
    color: var(--brand-deep);
  }

  /* ===== Buttons ===== */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 48px;
    padding: 0 28px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s var(--ease);
    border: 1px solid transparent;
    white-space: nowrap;
  }

  .btn-primary {
    background: var(--brand);
    color: #fff;
  }

  .btn-primary:hover {
    background: var(--brand-deep);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(184, 123, 40, 0.3);
  }

  .btn-primary:active {
    background: #704818;
    transform: translateY(0);
  }

  .btn-outline-light {
    border-color: rgba(242, 239, 233, 0.5);
    color: var(--ink-invert);
    background: transparent;
  }

  .btn-outline-light:hover {
    border-color: var(--brand);
    color: var(--brand);
    background: rgba(184, 123, 40, 0.06);
  }

  .btn-outline-dark {
    border-color: var(--line);
    color: var(--ink);
    background: transparent;
  }

  .btn-outline-dark:hover {
    border-color: var(--brand);
    color: var(--brand-deep);
    background: var(--brand-soft);
  }

  .btn:focus-visible,
  .nav-link:focus-visible,
  .dropdown-toggle:focus-visible,
  .mobile-toggle:focus-visible,
  .faq-question:focus-visible,
  .contact-form input:focus-visible,
  .contact-form textarea:focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 2px;
  }

  .btn .arrow-icon {
    transition: transform 0.3s var(--ease);
  }

  .btn:hover .arrow-icon {
    transform: translateX(4px);
  }

  /* ===== Hero ===== */
  .hero {
    background: var(--bg-deep);
    color: var(--ink-invert);
    padding: 160px 0 96px;
    position: relative;
    overflow: hidden;
    min-height: 620px;
    display: flex;
    align-items: center;
  }

  .hero::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -160px;
    width: 520px;
    height: 520px;
    background: radial-gradient(circle, rgba(184, 123, 40, 0.14) 0%, transparent 65%);
    pointer-events: none;
  }

  .hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(184, 123, 40, 0.5), transparent);
  }

  .hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.18em;
    color: var(--brand);
    text-transform: uppercase;
    margin-bottom: 24px;
  }

  .hero-eyebrow::before {
    content: '';
    width: 28px;
    height: 1px;
    background: var(--brand);
  }

  .hero-title {
    font-size: 44px;
    line-height: 1.18;
    font-weight: 900;
    color: var(--ink-invert);
    letter-spacing: -0.01em;
    margin-bottom: 24px;
  }

  .hero-title .accent {
    color: var(--brand);
  }

  .hero-sub {
    font-size: 17px;
    line-height: 1.8;
    color: rgba(242, 239, 233, 0.75);
    max-width: 540px;
    margin-bottom: 40px;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
  }

  .hero-figure {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
    transform: rotate(1.5deg);
  }

  .hero-figure img {
    width: 100%;
    height: 420px;
    object-fit: cover;
    border-radius: 20px;
  }

  .hero-figure::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 1px solid rgba(184, 123, 40, 0.25);
    border-radius: 20px;
    pointer-events: none;
  }

  .hero-figure .hero-figure-badge {
    position: absolute;
    top: 20px;
    left: 20px;
    background: rgba(22, 20, 17, 0.82);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(184, 123, 40, 0.35);
    color: var(--ink-invert);
    font-size: 12px;
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 999px;
    letter-spacing: 0.06em;
  }

  @media (min-width: 1024px) {
    .hero-title {
      font-size: 52px;
    }
  }

  /* ===== Trust bar ===== */
  .trust-bar {
    background: var(--bg-base);
    padding: 32px 0;
    border-bottom: 1px solid var(--line);
  }

  .trust-list {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 8px 0;
  }

  .trust-item {
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.12em;
    color: var(--ink-2);
    padding: 8px 32px;
    position: relative;
    white-space: nowrap;
  }

  .trust-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 16px;
    background: var(--line);
  }

  /* ===== Section common ===== */
  .section {
    padding: 80px 0;
  }

  @media (min-width: 1024px) {
    .section {
      padding: 104px 0;
    }
  }

  .section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.16em;
    color: var(--brand);
    text-transform: uppercase;
    margin-bottom: 16px;
  }

  .section-eyebrow::before {
    content: '';
    width: 24px;
    height: 1px;
    background: var(--brand);
  }

  .section-title {
    font-size: 28px;
    line-height: 1.25;
    font-weight: 800;
    color: var(--ink);
    letter-spacing: -0.01em;
  }

  @media (min-width: 1024px) {
    .section-title {
      font-size: 34px;
    }
  }

  .section-desc {
    font-size: 16px;
    line-height: 1.75;
    color: var(--ink-2);
    max-width: 640px;
    margin-top: 14px;
  }

  .section-head-left {
    max-width: 640px;
  }

  /* ===== Cards ===== */
  .card {
    background: var(--bg-base);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--line);
    padding: 32px;
    transition: all 0.3s var(--ease);
    position: relative;
    overflow: hidden;
  }

  .card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
    border-color: rgba(184, 123, 40, 0.4);
  }

  .card-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: var(--brand-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--brand-deep);
    margin-bottom: 20px;
  }

  .card-icon svg {
    width: 26px;
    height: 26px;
  }

  .card-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 10px;
    line-height: 1.4;
  }

  .card-text {
    font-size: 15px;
    line-height: 1.75;
    color: var(--ink-2);
  }

  .card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 20px;
    font-size: 14px;
    font-weight: 600;
    color: var(--brand-deep);
  }

  .card-link .arrow-icon {
    transition: transform 0.3s var(--ease);
  }

  .card-link:hover .arrow-icon {
    transform: translateX(4px);
  }

  .card-large {
    background: var(--bg-deep);
    color: var(--ink-invert);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    min-height: 440px;
    border: none;
  }

  .card-large::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--brand);
  }

  .card-large .card-title {
    color: var(--ink-invert);
    font-size: 24px;
  }

  .card-large .card-text {
    color: rgba(242, 239, 233, 0.72);
  }

  .card-large .card-link {
    color: var(--brand);
  }

  .card-large .card-link:hover {
    color: var(--ink-invert);
  }

  .card-large .card-icon {
    background: rgba(184, 123, 40, 0.16);
    color: var(--brand);
  }

  /* ===== Services grid ===== */
  .services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
  }

  @media (min-width: 1024px) {
    .services-grid {
      grid-template-columns: 1fr 1fr;
      grid-template-rows: repeat(2, 1fr);
    }

    .card-span {
      grid-row: span 2;
    }
  }

  /* ===== Data band ===== */
  .data-band {
    background: var(--bg-deep);
    color: var(--ink-invert);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
  }

  .data-band::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(184, 123, 40, 0.4), transparent);
  }

  .data-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 48px 32px;
  }

  @media (min-width: 1024px) {
    .data-grid {
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
  }

  .stat-item {
    text-align: center;
    padding: 24px 8px;
    position: relative;
  }

  .stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 32px;
    height: 2px;
    background: var(--brand);
    border-radius: 2px;
  }

  .stat-number {
    font-family: "DIN Alternate", "Bebas Neue", "Noto Sans SC", sans-serif;
    font-size: 56px;
    font-weight: 700;
    color: var(--brand);
    line-height: 1;
    letter-spacing: -0.01em;
    display: inline-flex;
    align-items: baseline;
  }

  .stat-prefix {
    font-size: 28px;
    font-weight: 700;
    color: var(--ink-invert);
    margin-right: 4px;
    font-family: "DIN Alternate", "Noto Sans SC", sans-serif;
  }

  .stat-suffix {
    font-size: 28px;
    font-weight: 700;
    color: var(--ink-invert);
    margin-left: 2px;
    font-family: "DIN Alternate", "Noto Sans SC", sans-serif;
  }

  .stat-label {
    display: block;
    margin-top: 14px;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.06em;
    color: rgba(242, 239, 233, 0.65);
  }

  /* ===== Cases ===== */
  .case-card {
    background: var(--bg-base);
    border-radius: var(--radius-card);
    overflow: hidden;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-card);
    transition: all 0.3s var(--ease);
    display: flex;
    flex-direction: column;
    height: 100%;
  }

  .case-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
    border-color: rgba(184, 123, 40, 0.35);
  }

  .case-media {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 10;
    background: var(--bg-panel);
  }

  .case-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s var(--ease);
  }

  .case-card:hover .case-media img {
    transform: scale(1.03);
  }

  .case-media .case-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    background: var(--brand);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.05em;
    padding: 6px 14px;
    border-radius: 999px;
  }

  .case-body {
    padding: 24px 24px 28px;
    flex: 1;
    display: flex;
    flex-direction: column;
  }

  .case-body .case-title {
    font-size: 19px;
    font-weight: 700;
    color: var(--ink);
    line-height: 1.45;
    margin-bottom: 10px;
  }

  .case-body .case-desc {
    font-size: 14px;
    line-height: 1.7;
    color: var(--ink-2);
    flex: 1;
  }

  .case-grid-main {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
  }

  @media (min-width: 1024px) {
    .case-grid-main {
      grid-template-columns: 7fr 5fr;
      align-items: stretch;
    }
  }

  .case-stack {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    height: 100%;
  }

  @media (min-width: 1024px) {
    .case-stack {
      grid-template-rows: repeat(2, 1fr);
    }
  }

  /* ===== Solutions ===== */
  .solution-wrap {
    display: grid;
    grid-template-columns: 1fr;
    gap: 56px;
    align-items: center;
  }

  @media (min-width: 1024px) {
    .solution-wrap {
      grid-template-columns: 1fr 1fr;
      gap: 72px;
    }
  }

  .solution-points {
    margin-top: 28px;
    display: grid;
    gap: 14px;
  }

  .solution-point {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 15px;
    color: var(--ink-2);
    line-height: 1.6;
  }

  .solution-point .point-dot {
    flex: 0 0 8px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--brand);
    margin-top: 9px;
  }

  .step-list {
    list-style: none;
    padding: 0;
    margin: 0;
    position: relative;
  }

  .step-list::before {
    content: '';
    position: absolute;
    left: 24px;
    top: 16px;
    bottom: 16px;
    width: 1px;
    background: var(--line);
  }

  .step-item {
    position: relative;
    padding: 0 0 32px 72px;
  }

  .step-item:last-child {
    padding-bottom: 0;
  }

  .step-num {
    position: absolute;
    left: 0;
    top: 0;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--bg-base);
    border: 1px solid var(--line);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: "DIN Alternate", "Noto Sans SC", sans-serif;
    font-size: 15px;
    font-weight: 700;
    color: var(--brand-deep);
    z-index: 1;
    transition: all 0.3s var(--ease);
  }

  .step-item:hover .step-num {
    background: var(--brand);
    border-color: var(--brand);
    color: #fff;
    box-shadow: 0 4px 16px rgba(184, 123, 40, 0.3);
  }

  .step-item h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 6px;
  }

  .step-item p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--ink-2);
  }

  .solution-cats {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 32px;
  }

  .cat-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: var(--bg-base);
    color: var(--ink);
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s var(--ease);
  }

  .cat-pill:hover {
    border-color: var(--brand);
    color: var(--brand-deep);
    background: var(--brand-soft);
    transform: translateY(-1px);
  }

  .cat-pill .pill-arrow {
    font-size: 12px;
    transition: transform 0.3s var(--ease);
  }

  .cat-pill:hover .pill-arrow {
    transform: translateX(3px);
  }

  /* ===== News ===== */
  .news-wrap {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
  }

  @media (min-width: 1024px) {
    .news-wrap {
      grid-template-columns: 5fr 7fr;
      gap: 56px;
      align-items: start;
    }
  }

  .news-feature {
    display: block;
    background: var(--bg-base);
    border-radius: var(--radius-card);
    overflow: hidden;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-card);
    transition: all 0.3s var(--ease);
  }

  .news-feature:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
    border-color: rgba(184, 123, 40, 0.35);
  }

  .news-feature .nf-media {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--bg-panel);
  }

  .news-feature .nf-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s var(--ease);
  }

  .news-feature:hover .nf-media img {
    transform: scale(1.03);
  }

  .news-feature .nf-body {
    padding: 24px;
  }

  .nf-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
  }

  .nf-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--ink);
    line-height: 1.45;
    margin-bottom: 10px;
  }

  .nf-desc {
    font-size: 14px;
    line-height: 1.7;
    color: var(--ink-2);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

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

  .news-row {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 16px;
    padding: 20px 8px;
    border-bottom: 1px solid var(--line);
    transition: all 0.3s var(--ease);
  }

  .news-row:first-child {
    padding-top: 0;
  }

  .news-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }

  .news-row:hover {
    background: transparent;
    padding-left: 14px;
  }

  .news-row .row-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.5;
    transition: color 0.3s var(--ease);
  }

  .news-row:hover .row-title {
    color: var(--brand-deep);
  }

  .news-row .row-time {
    font-size: 13px;
    color: var(--ink-3);
    white-space: nowrap;
    font-family: "DIN Alternate", "Noto Sans SC", sans-serif;
  }

  .news-row .row-arrow {
    color: var(--ink-3);
    transition: all 0.3s var(--ease);
    font-size: 14px;
  }

  .news-row:hover .row-arrow {
    color: var(--brand);
    transform: translateX(4px);
  }

  .badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.04em;
    background: var(--brand-soft);
    color: var(--brand-deep);
    white-space: nowrap;
  }

  .empty-state {
    padding: 48px 24px;
    text-align: center;
    background: var(--bg-panel);
    border-radius: var(--radius-card);
    color: var(--ink-2);
    font-size: 15px;
    border: 1px dashed var(--line);
  }

  /* ===== FAQ ===== */
  .faq-wrap {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
  }

  @media (min-width: 1024px) {
    .faq-wrap {
      grid-template-columns: 4fr 8fr;
      gap: 72px;
      align-items: start;
    }
  }

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

  .faq-item {
    border-bottom: 1px solid var(--line);
    transition: background 0.3s var(--ease);
  }

  .faq-item.active {
    background: var(--bg-panel);
  }

  .faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 22px 20px;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    transition: color 0.3s var(--ease);
  }

  .faq-question:hover {
    color: var(--brand-deep);
  }

  .faq-icon {
    flex: 0 0 32px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid var(--line);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--brand);
    transition: all 0.3s var(--ease);
  }

  .faq-item.active .faq-icon {
    transform: rotate(45deg);
    background: var(--brand);
    border-color: var(--brand);
    color: #fff;
  }

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s var(--ease);
  }

  .faq-answer-inner {
    padding: 0 20px 24px;
    font-size: 15px;
    line-height: 1.8;
    color: var(--ink-2);
  }

  /* ===== CTA ===== */
  .cta-band {
    background: var(--bg-deep);
    color: var(--ink-invert);
    padding: 96px 0;
    position: relative;
    overflow: hidden;
  }

  .cta-band::before {
    content: '';
    position: absolute;
    top: -120px;
    left: -120px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(184, 123, 40, 0.12) 0%, transparent 65%);
    pointer-events: none;
  }

  .cta-band .section-title {
    color: var(--ink-invert);
  }

  .cta-band .section-desc {
    color: rgba(242, 239, 233, 0.72);
  }

  .cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 36px;
  }

  .contact-form {
    margin-top: 56px;
    padding-top: 48px;
    border-top: 1px solid var(--line-deep);
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    max-width: 760px;
    margin-left: auto;
    margin-right: auto;
  }

  @media (min-width: 768px) {
    .contact-form {
      grid-template-columns: 1fr 1fr;
    }

    .contact-form .form-full {
      grid-column: span 2;
    }
  }

  .form-field label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.04em;
    color: rgba(242, 239, 233, 0.7);
    margin-bottom: 8px;
  }

  .form-field input,
  .form-field textarea {
    width: 100%;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--line-deep);
    border-radius: 12px;
    color: var(--ink-invert);
    padding: 14px 16px;
    font-size: 15px;
    transition: all 0.3s var(--ease);
  }

  .form-field input::placeholder,
  .form-field textarea::placeholder {
    color: rgba(242, 239, 233, 0.35);
  }

  .form-field input:focus,
  .form-field textarea:focus {
    border-color: var(--brand);
    background: rgba(184, 123, 40, 0.06);
    box-shadow: 0 0 0 3px rgba(184, 123, 40, 0.15);
  }

  .form-field textarea {
    resize: vertical;
    min-height: 110px;
  }

  .form-submit {
    grid-column: span 2;
    justify-content: flex-start;
  }

  @media (max-width: 767px) {
    .form-submit {
      grid-column: span 1;
    }
  }

  /* ===== Footer ===== */
  .site-footer {
    background: var(--bg-deep);
    color: rgba(242, 239, 233, 0.7);
    padding: 72px 0 0;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    padding-bottom: 56px;
  }

  @media (min-width: 768px) {
    .footer-grid {
      grid-template-columns: 2fr 1fr 1fr 1.4fr;
      gap: 32px;
    }
  }

  .footer-brand .site-logo {
    display: inline-block;
    color: var(--ink-invert);
    margin-bottom: 16px;
  }

  .footer-desc {
    font-size: 14px;
    line-height: 1.75;
    color: rgba(242, 239, 233, 0.55);
    max-width: 300px;
    margin-top: 4px;
  }

  .footer-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--ink-invert);
    letter-spacing: 0.08em;
    margin-bottom: 20px;
  }

  .footer-links {
    list-style: none;
    display: grid;
    gap: 12px;
  }

  .footer-links a {
    font-size: 14px;
    color: rgba(242, 239, 233, 0.6);
  }

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

  .footer-contact-list {
    list-style: none;
    display: grid;
    gap: 14px;
  }

  .footer-contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    line-height: 1.6;
    color: rgba(242, 239, 233, 0.6);
  }

  .footer-contact-list .fc-icon {
    flex: 0 0 18px;
    color: var(--brand);
    font-size: 15px;
    line-height: 1.4;
  }

  .footer-bottom {
    border-top: 1px solid var(--line-deep);
    padding: 24px 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
  }

  .footer-copy {
    font-size: 13px;
    color: rgba(242, 239, 233, 0.45);
  }

  .footer-bottom-links {
    display: flex;
    gap: 24px;
  }

  .footer-bottom-links a {
    font-size: 13px;
    color: rgba(242, 239, 233, 0.45);
  }

  .footer-bottom-links a:hover {
    color: var(--brand);
  }

  /* ===== Reveal animation ===== */
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  }

  .reveal.revealed {
    opacity: 1;
    transform: translateY(0);
  }

  .hero .reveal {
    opacity: 0;
    transform: translateY(28px);
    animation: heroFadeUp 0.8s var(--ease) forwards;
  }

  .hero .reveal:nth-child(1) { animation-delay: 0.05s; }
  .hero .reveal:nth-child(2) { animation-delay: 0.15s; }
  .hero .reveal:nth-child(3) { animation-delay: 0.25s; }
  .hero .reveal:nth-child(4) { animation-delay: 0.35s; }

  @keyframes heroFadeUp {
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* ===== Mobile responsive ===== */
  @media (max-width: 1023px) {
    .nav-left,
    .nav-right {
      display: none;
    }

    .mobile-toggle {
      display: flex;
    }

    .header-grid {
      grid-template-columns: auto 1fr auto;
    }

    .site-logo {
      font-size: 17px;
      text-align: center;
    }

    .hero {
      padding: 120px 0 72px;
    }

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

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

    .hero-figure img {
      height: 280px;
    }
  }

  @media (max-width: 639px) {
    .section {
      padding: 64px 0;
    }

    .hero-title {
      font-size: 28px;
    }

    .hero-actions .btn {
      flex: 1;
      min-width: 0;
    }

    .stat-number {
      font-size: 44px;
    }

    .trust-item {
      padding: 6px 20px;
      font-size: 13px;
    }

    .case-media {
      aspect-ratio: 16 / 10;
    }

    .news-row {
      grid-template-columns: 1fr auto;
      gap: 8px 12px;
    }

    .news-row .row-time {
      grid-column: span 2;
    }

    .footer-bottom {
      flex-direction: column;
      text-align: center;
    }

    .contact-form {
      padding-top: 32px;
      margin-top: 40px;
    }
  }

  @media (min-width: 520px) and (max-width: 1023px) {
    .hero-figure {
      max-width: 520px;
      margin: 0 auto;
    }
  }

/* roulang page: article */
:root {
  --bg-base: #F7F4EF;
  --bg-deep: #161411;
  --bg-panel: #EFEBE4;
  --brand: #B87B28;
  --brand-deep: #8E5C1E;
  --brand-soft: #F0E6D6;
  --ink: #1C1B18;
  --ink-2: #5C5A55;
  --ink-3: #8A877F;
  --ink-invert: #F2EFE9;
  --line: #DCD7CE;
  --line-deep: #3A362F;
  --radius: 16px;
  --radius-sm: 8px;
  --shadow: 0px 1px 3px rgba(22,18,12,0.06), 0px 8px 24px rgba(22,18,12,0.05);
  --shadow-hover: 0px 4px 12px rgba(22,18,12,0.10), 0px 16px 40px rgba(22,18,12,0.08);
  --container: 1280px;
  --header-h: 72px;
  --transition: all 0.3s cubic-bezier(0.25,0.46,0.45,0.94);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--bg-base);
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: transparent;
  transition: var(--transition);
  z-index: 1000;
}
.site-header.scrolled {
  background: rgba(247,244,239,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: var(--header-h);
  gap: 24px;
}
.nav-left {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 26px;
}
.nav-right {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 26px;
}
.site-logo {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
  white-space: nowrap;
  transition: var(--transition);
}
.site-logo:hover { color: var(--brand); }
.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-2);
  padding: 8px 2px;
  letter-spacing: 0.03em;
  transition: var(--transition);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.nav-link:hover { color: var(--brand); }
.nav-link.active {
  color: var(--ink);
  font-weight: 600;
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 100%; height: 2px;
  background: var(--brand);
  border-radius: 2px;
}
.nav-item { position: relative; }
.chevron { font-size: 10px; transition: transform 0.3s; display: inline-block; }
.nav-item:hover .chevron { transform: rotate(180deg); }
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: #fff;
  border-radius: 12px;
  box-shadow: var(--shadow-hover);
  padding: 8px;
  min-width: 190px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 100;
}
.nav-item:hover .dropdown-menu,
.nav-item:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.dropdown-menu a {
  display: block;
  padding: 10px 14px;
  font-size: 13px;
  color: var(--ink-2);
  border-radius: 8px;
  transition: var(--transition);
}
.dropdown-menu a:hover {
  background: var(--brand-soft);
  color: var(--brand-deep);
}
.mobile-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-left: auto;
  border-radius: 8px;
  transition: var(--transition);
}
.mobile-toggle:hover { background: var(--bg-panel); }
.mobile-toggle span {
  display: block;
  width: 20px; height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: var(--transition);
}
.mobile-toggle.open span:nth-child(1) { transform: translateY(4px) rotate(45deg); }
.mobile-toggle.open span:nth-child(2) { opacity: 0; }
.mobile-toggle.open span:nth-child(3) { transform: translateY(-4px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--bg-base);
  z-index: 999;
  display: flex;
  flex-direction: column;
  padding: 96px 24px 40px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  overflow-y: auto;
}
.mobile-menu.open {
  opacity: 1;
  visibility: visible;
}
.mobile-menu a,
.mobile-link {
  display: block;
  padding: 14px 0;
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  transition: var(--transition);
}
.mobile-menu a:hover,
.mobile-link:hover {
  color: var(--brand);
  padding-left: 8px;
}
.mobile-menu .mobile-link.active {
  color: var(--brand);
  font-weight: 600;
}
.mobile-dropdown {
  border-bottom: 1px solid var(--line);
}
.mobile-dropdown-toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
  padding: 14px 0;
  border-bottom: none;
}
.mobile-dropdown-menu {
  padding: 4px 0 12px;
  display: none;
}
.mobile-dropdown-menu.open { display: block; }
.mobile-dropdown-menu a {
  padding: 10px 0 10px 16px;
  font-size: 15px;
  color: var(--ink-2);
  border-bottom: none;
  position: relative;
}
.mobile-dropdown-menu a::before {
  content: '·';
  position: absolute;
  left: 4px;
  color: var(--brand);
  font-weight: 700;
}

/* ===== Article Hero ===== */
.article-hero {
  padding: 144px 0 48px;
  background: var(--bg-base);
  border-bottom: 1px solid var(--line);
}
.hero-accent {
  width: 42px;
  height: 3px;
  background: var(--brand);
  border-radius: 3px;
  margin-bottom: 20px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-3);
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--ink-3); transition: var(--transition); }
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb .sep { color: var(--line); }
.breadcrumb .current {
  color: var(--ink-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 320px;
}
.article-heading {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: 20px;
  max-width: 860px;
  letter-spacing: -0.01em;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--brand-deep);
  background: var(--brand-soft);
  border-radius: 6px;
  padding: 4px 12px;
}
.meta-item {
  font-size: 13px;
  color: var(--ink-3);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.meta-sep {
  width: 1px; height: 14px;
  background: var(--line);
}

/* ===== Article Body ===== */
.article-body {
  padding: 48px 0 72px;
  background: #fff;
}
.article-container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
}
.article-content {
  font-size: 17px;
  line-height: 1.8;
  color: var(--ink);
}
.article-content p { margin-bottom: 22px; }
.article-content h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 42px 0 16px;
  padding-left: 14px;
  border-left: 3px solid var(--brand);
  line-height: 1.4;
}
.article-content h3 {
  font-size: 19px;
  font-weight: 600;
  margin: 32px 0 12px;
  line-height: 1.5;
}
.article-content img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  margin: 28px 0;
}
.article-content blockquote {
  border-left: 4px solid var(--brand);
  background: var(--brand-soft);
  padding: 18px 22px;
  border-radius: 0 12px 12px 0;
  margin: 28px 0;
  color: var(--ink-2);
  font-style: normal;
}
.article-content ul,
.article-content ol {
  padding-left: 24px;
  margin-bottom: 22px;
}
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin-bottom: 8px; }
.article-content a {
  color: var(--brand);
  border-bottom: 1px solid var(--brand-soft);
  transition: var(--transition);
}
.article-content a:hover { color: var(--brand-deep); border-color: var(--brand-deep); }
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 15px;
}
.article-content th {
  background: var(--bg-deep);
  color: var(--ink-invert);
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  border: none;
}
.article-content td {
  border: 1px solid var(--line);
  padding: 10px 16px;
}
.article-content tr:nth-child(even) td { background: #FAF8F4; }
.article-content hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 36px 0;
}
.article-content strong { font-weight: 700; color: var(--ink); }
.article-content code {
  background: var(--bg-panel);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 14px;
  font-family: "SF Mono", "DIN Alternate", monospace;
}

/* Not found */
.not-found {
  text-align: center;
  padding: 60px 24px;
  background: var(--bg-base);
  border-radius: var(--radius);
  border: 1px dashed var(--line);
}
.not-found h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 12px;
}
.not-found p {
  font-size: 15px;
  color: var(--ink-2);
  margin-bottom: 28px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
  border: none;
}
.btn-primary {
  background: var(--brand);
  color: #fff;
}
.btn-primary:hover {
  background: var(--brand-deep);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(142,92,30,0.25);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: none;
}
.btn-primary:focus-visible,
.btn-outline:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

/* ===== Related Section ===== */
.related-section {
  padding: 64px 0 80px;
  background: var(--bg-panel);
}
.related-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  gap: 16px;
}
.related-header h2 {
  font-size: 28px;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.related-header .badge {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink-3);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  display: block;
  border: 1px solid transparent;
}
.related-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: var(--brand);
}
.related-img {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--bg-panel);
}
.related-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.25,0.46,0.45,0.94);
}
.related-card:hover .related-img img { transform: scale(1.03); }
.related-body {
  padding: 20px 22px;
}
.related-body .badge {
  display: inline-block;
  margin-bottom: 10px;
}
.related-body h3 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: var(--transition);
}
.related-card:hover .related-body h3 { color: var(--brand-deep); }
.related-date {
  font-size: 13px;
  color: var(--ink-3);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.empty-state {
  text-align: center;
  padding: 48px 24px;
  font-size: 15px;
  color: var(--ink-3);
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 44px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-2);
  transition: var(--transition);
}
.back-link:hover {
  color: var(--brand);
  gap: 12px;
}
.back-link .arrow { font-size: 18px; line-height: 1; }

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-deep);
  color: var(--ink-invert);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--line-deep);
}
.site-footer .site-logo {
  color: var(--ink-invert);
  font-size: 20px;
  font-weight: 800;
  display: inline-block;
  margin-bottom: 16px;
}
.site-footer .site-logo:hover { color: var(--brand); }
.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(242,239,233,0.6);
  max-width: 300px;
}
.footer-title {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--ink-invert);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(242,239,233,0.1);
  display: inline-block;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  font-size: 14px;
  color: rgba(242,239,233,0.6);
  transition: var(--transition);
}
.footer-links a:hover {
  color: var(--brand);
  padding-left: 4px;
}
.footer-contact-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(242,239,233,0.6);
  margin-bottom: 12px;
}
.fc-icon { color: var(--brand); font-style: normal; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  border-top: 1px solid var(--line-deep);
  flex-wrap: wrap;
  gap: 12px;
}
.footer-copy {
  font-size: 13px;
  color: rgba(242,239,233,0.4);
}
.footer-bottom-links {
  display: flex;
  gap: 24px;
}
.footer-bottom-links a {
  font-size: 13px;
  color: rgba(242,239,233,0.5);
  transition: var(--transition);
}
.footer-bottom-links a:hover { color: var(--brand); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .nav-left, .nav-right { display: none; }
  .mobile-toggle { display: flex; }
  .header-inner { grid-template-columns: auto 1fr auto; }
  .header-inner .site-logo { margin-right: auto; }
  .article-heading { font-size: 32px; }
  .related-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .article-hero { padding: 120px 0 32px; }
  .article-heading { font-size: 28px; }
  .article-body { padding: 32px 0 48px; }
  .article-container { padding: 0 20px; }
  .related-section { padding: 48px 0 56px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .related-header { flex-direction: column; align-items: flex-start; gap: 8px; }
  .article-content table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
  }
}
@media (max-width: 520px) {
  .header-inner { grid-template-columns: 1fr auto; gap: 12px; }
  .site-logo { font-size: 16px; }
  .article-heading { font-size: 24px; }
  .meta-item { font-size: 12px; }
  .related-grid { max-width: 100%; }
  .breadcrumb .current { max-width: 180px; }
}

/* roulang page: category1 */
:root {
    --bg-base: #F7F4EF;
    --bg-deep: #161411;
    --bg-panel: #EFEBE4;
    --brand: #B87B28;
    --brand-deep: #8E5C1E;
    --brand-soft: #F0E6D6;
    --ink: #1C1B18;
    --ink-2: #5C5A55;
    --ink-3: #8A877F;
    --ink-invert: #F2EFE9;
    --line: #DCD7CE;
    --line-deep: #3A362F;
    --radius-card: 16px;
    --radius-tag: 6px;
    --radius-pill: 999px;
    --shadow-card: 0px 1px 3px rgba(22,18,12,0.06), 0px 8px 24px rgba(22,18,12,0.05);
    --shadow-card-hover: 0px 2px 6px rgba(22,18,12,0.08), 0px 12px 32px rgba(22,18,12,0.10);
    --shadow-card-dark: 0px 2px 8px rgba(0,0,0,0.25);
    --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg-base);
    color: var(--ink);
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

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

  a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s var(--ease);
  }

  button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
  }

  ul,
  ol {
    list-style: none;
  }

  .container {
    max-width: 1280px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
  }

  @media (min-width: 1024px) {
    .container {
      padding-left: 32px;
      padding-right: 32px;
    }
  }

  /* ===== Header ===== */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: 72px;
    transition: background-color 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
    color: var(--ink-invert);
    border-bottom: 1px solid transparent;
  }

  .site-header.header-scrolled {
    background: rgba(247, 244, 239, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
    color: var(--ink);
    box-shadow: 0 1px 6px rgba(22, 18, 12, 0.04);
  }

  .header-inner {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    align-items: center;
    height: 72px;
    gap: 12px;
  }

  .nav-left {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 24px;
  }

  .nav-right {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 24px;
  }

  .site-logo {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 0.02em;
    white-space: nowrap;
    justify-self: center;
    color: inherit;
    line-height: 1.2;
  }

  .site-logo:hover {
    color: var(--brand);
  }

  .nav-link {
    display: inline-block;
    padding: 8px 2px;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.02em;
    color: inherit;
    position: relative;
    transition: color 0.3s var(--ease);
    background: none;
    border: none;
    cursor: pointer;
  }

  .nav-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--brand);
    transition: width 0.3s var(--ease);
  }

  .nav-link:hover {
    color: var(--brand);
  }

  .nav-link:hover::after,
  .nav-link.active::after {
    width: 100%;
  }

  .nav-link.active {
    color: var(--brand);
    font-weight: 600;
  }

  .site-header.header-on-dark .nav-link:hover {
    color: var(--brand);
  }

  .nav-item {
    position: relative;
  }

  .nav-item.has-active .dropdown-toggle {
    color: var(--brand);
    font-weight: 600;
  }

  .dropdown-toggle {
    display: inline-flex;
    align-items: center;
    gap: 4px;
  }

  .chevron {
    font-size: 10px;
    transition: transform 0.3s var(--ease);
  }

  .nav-item:hover .chevron {
    transform: rotate(180deg);
  }

  .dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    min-width: 180px;
    background: rgba(247, 244, 239, 0.98);
    border: 1px solid var(--line);
    border-radius: var(--radius-tag);
    box-shadow: var(--shadow-card-hover);
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s;
    z-index: 50;
  }

  .nav-item:hover .dropdown-menu,
  .nav-item:focus-within .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
  }

  .dropdown-menu a {
    display: block;
    padding: 10px 14px;
    font-size: 14px;
    color: var(--ink);
    border-radius: var(--radius-tag);
    transition: background-color 0.3s var(--ease), color 0.3s var(--ease);
    white-space: nowrap;
  }

  .dropdown-menu a:hover {
    background: var(--brand-soft);
    color: var(--brand-deep);
  }

  .dropdown-menu a.active {
    background: var(--brand-soft);
    color: var(--brand-deep);
    font-weight: 600;
  }

  .mobile-toggle {
    display: none;
    width: 44px;
    height: 44px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    background: transparent;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: var(--radius-tag);
    z-index: 120;
    transition: border-color 0.3s var(--ease);
  }

  .site-header.header-scrolled .mobile-toggle {
    border-color: var(--line);
  }

  .mobile-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: currentColor;
    transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
  }

  .mobile-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .mobile-toggle.open span:nth-child(2) {
    opacity: 0;
  }

  .mobile-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-base);
    z-index: 110;
    padding: 96px 32px 48px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-16px);
    transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s;
    overflow-y: auto;
  }

  .mobile-menu.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .mobile-nav-link {
    display: block;
    padding: 14px 0;
    font-size: 17px;
    font-weight: 600;
    color: var(--ink);
    border-bottom: 1px solid var(--line);
    transition: color 0.3s var(--ease), padding-left 0.3s var(--ease);
  }

  .mobile-nav-link:hover {
    color: var(--brand);
    padding-left: 8px;
  }

  .mobile-nav-link.active {
    color: var(--brand);
  }

  .mobile-submenu {
    display: none;
    padding: 4px 0 12px;
  }

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

  .mobile-submenu a {
    display: block;
    padding: 10px 16px;
    font-size: 15px;
    color: var(--ink-2);
    border-radius: var(--radius-tag);
    transition: background-color 0.3s var(--ease), color 0.3s var(--ease);
  }

  .mobile-submenu a:hover,
  .mobile-submenu a.active {
    background: var(--brand-soft);
    color: var(--brand-deep);
  }

  @media (max-width: 1023px) {
    .nav-left,
    .nav-right {
      display: none;
    }

    .header-inner {
      grid-template-columns: 1fr 1fr 1fr;
    }

    .mobile-toggle {
      display: flex;
      justify-self: end;
    }
  }

  /* ===== Buttons ===== */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 48px;
    padding: 0 28px;
    border-radius: var(--radius-pill);
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.02em;
    transition: all 0.3s var(--ease);
    border: 1px solid transparent;
    outline: none;
  }

  .btn:focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 3px;
  }

  .btn-primary {
    background: var(--brand);
    color: #fff;
  }

  .btn-primary:hover {
    background: var(--brand-deep);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(142, 92, 30, 0.25);
  }

  .btn-primary:active {
    background: #704716;
    transform: translateY(0);
    box-shadow: none;
  }

  .btn-outline-light {
    background: transparent;
    border-color: rgba(242, 239, 233, 0.5);
    color: var(--ink-invert);
  }

  .btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--ink-invert);
    transform: translateY(-2px);
  }

  .btn-outline-light:active {
    transform: translateY(0);
    background: rgba(255, 255, 255, 0.14);
  }

  .btn .arrow {
    transition: transform 0.3s var(--ease);
    font-size: 14px;
  }

  .btn:hover .arrow {
    transform: translateX(4px);
  }

  /* ===== Section Utilities ===== */
  .section-panel {
    background: var(--bg-panel);
    padding: 72px 0;
  }

  .section-dark {
    background: var(--bg-deep);
    padding: 80px 0;
  }

  .section-base {
    background: var(--bg-base);
    padding: 72px 0;
  }

  .section-head {
    max-width: 640px;
    margin-bottom: 48px;
  }

  .section-head.center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
  }

  .section-eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--brand);
    margin-bottom: 12px;
  }

  .section-dark .section-eyebrow {
    color: var(--brand);
  }

  .section-title {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.25;
    color: var(--ink);
    letter-spacing: -0.01em;
    margin-bottom: 16px;
  }

  .section-dark .section-title {
    color: var(--ink-invert);
  }

  .section-desc {
    font-size: 16px;
    color: var(--ink-2);
    line-height: 1.75;
  }

  .section-dark .section-desc {
    color: rgba(242, 239, 233, 0.7);
  }

  @media (min-width: 768px) {
    .section-panel,
    .section-base {
      padding: 88px 0;
    }

    .section-dark {
      padding: 96px 0;
    }

    .section-title {
      font-size: 36px;
    }
  }

  /* ===== Category Hero ===== */
  .cat-hero {
    background: var(--bg-deep);
    padding: 140px 0 72px;
    position: relative;
    overflow: hidden;
  }

  .cat-hero::before {
    content: '';
    position: absolute;
    top: -120px;
    right: -80px;
    width: 360px;
    height: 360px;
    border: 1px solid rgba(184, 123, 40, 0.18);
    border-radius: 50%;
  }

  .cat-hero::after {
    content: '';
    position: absolute;
    bottom: -160px;
    right: 10%;
    width: 280px;
    height: 280px;
    border: 1px solid rgba(184, 123, 40, 0.12);
    border-radius: 50%;
  }

  .cat-hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 48px;
    align-items: center;
    position: relative;
    z-index: 2;
  }

  @media (min-width: 1024px) {
    .cat-hero {
      padding-top: 160px;
      padding-bottom: 88px;
    }

    .cat-hero-grid {
      grid-template-columns: 7fr 5fr;
      gap: 64px;
    }
  }

  .cat-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border: 1px solid var(--line-deep);
    border-radius: var(--radius-tag);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.06em;
    color: var(--brand);
    background: rgba(184, 123, 40, 0.08);
    margin-bottom: 20px;
  }

  .cat-hero-badge::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--brand);
    border-radius: 50%;
  }

  .cat-hero h1 {
    font-size: 36px;
    font-weight: 900;
    line-height: 1.2;
    color: var(--ink-invert);
    letter-spacing: -0.01em;
    margin-bottom: 20px;
  }

  @media (min-width: 768px) {
    .cat-hero h1 {
      font-size: 48px;
    }
  }

  .cat-hero-lead {
    font-size: 16px;
    line-height: 1.75;
    color: rgba(242, 239, 233, 0.75);
    margin-bottom: 32px;
    max-width: 520px;
  }

  .cat-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 40px;
  }

  .cat-hero-meta {
    display: flex;
    gap: 40px;
    padding-top: 32px;
    border-top: 1px solid var(--line-deep);
  }

  .meta-item strong {
    display: block;
    font-family: "DIN Alternate", "Noto Sans SC", sans-serif;
    font-size: 20px;
    font-weight: 700;
    color: var(--brand);
    margin-bottom: 2px;
  }

  .meta-item span {
    font-size: 13px;
    color: rgba(242, 239, 233, 0.55);
  }

  @media (max-width: 480px) {
    .cat-hero-meta {
      gap: 24px;
    }
  }

  .cat-hero-image {
    position: relative;
  }

  .cat-hero-image .img-wrap {
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-card-dark);
    position: relative;
  }

  .cat-hero-image .img-wrap::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 55%, rgba(22, 20, 17, 0.45));
    pointer-events: none;
  }

  .cat-hero-image img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: transform 0.6s var(--ease);
  }

  @media (min-width: 768px) {
    .cat-hero-image img {
      height: 380px;
    }
  }

  .cat-hero-image:hover img {
    transform: scale(1.03);
  }

  .cat-hero-image .img-label {
    position: absolute;
    bottom: 20px;
    left: 20px;
    z-index: 2;
    padding: 8px 16px;
    background: rgba(22, 20, 17, 0.72);
    backdrop-filter: blur(6px);
    border: 1px solid rgba(184, 123, 40, 0.3);
    border-radius: var(--radius-tag);
    color: var(--ink-invert);
    font-size: 13px;
    letter-spacing: 0.04em;
  }

  /* ===== Features ===== */
  .features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
  }

  @media (min-width: 768px) {
    .features-grid {
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
  }

  .feature-card {
    background: var(--bg-base);
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    border: 1px solid transparent;
    transition: box-shadow 0.3s var(--ease), transform 0.3s var(--ease), border-color 0.3s var(--ease);
  }

  .feature-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-4px);
    border-color: rgba(184, 123, 40, 0.35);
  }

  .feature-media {
    overflow: hidden;
    aspect-ratio: 16 / 9;
  }

  .feature-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s var(--ease);
  }

  .feature-card:hover .feature-media img {
    transform: scale(1.03);
  }

  .feature-content {
    padding: 28px;
  }

  .feature-index {
    display: inline-block;
    font-family: "DIN Alternate", "Noto Sans SC", sans-serif;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--brand);
    margin-bottom: 10px;
  }

  .feature-content h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--ink);
    line-height: 1.4;
    margin-bottom: 12px;
  }

  .feature-content p {
    font-size: 15px;
    color: var(--ink-2);
    line-height: 1.7;
    margin-bottom: 16px;
  }

  .feature-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    color: var(--ink-2);
  }

  .feature-list li::before {
    content: '→';
    color: var(--brand);
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 1px;
  }

  /* ===== Scenarios ===== */
  .scenario-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
  }

  @media (min-width: 768px) {
    .scenario-grid {
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
  }

  @media (min-width: 1024px) {
    .scenario-grid {
      grid-template-columns: repeat(4, 1fr);
    }
  }

  .scenario-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--line-deep);
    border-radius: var(--radius-card);
    padding: 32px 24px;
    transition: background-color 0.3s var(--ease), border-color 0.3s var(--ease), transform 0.3s var(--ease);
  }

  .scenario-card:hover {
    background: rgba(184, 123, 40, 0.06);
    border-color: rgba(184, 123, 40, 0.3);
    transform: translateY(-4px);
  }

  .scenario-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-tag);
    background: rgba(184, 123, 40, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 20px;
  }

  .scenario-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--ink-invert);
    margin-bottom: 10px;
  }

  .scenario-card p {
    font-size: 14px;
    color: rgba(242, 239, 233, 0.6);
    line-height: 1.7;
  }

  /* ===== Process ===== */
  .process-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 48px;
    align-items: start;
  }

  @media (min-width: 1024px) {
    .process-layout {
      grid-template-columns: 5fr 7fr;
      gap: 64px;
    }
  }

  .process-sticky {
    position: sticky;
    top: 100px;
  }

  .process-sticky .section-desc {
    margin-bottom: 28px;
  }

  .process-note {
    padding: 20px 24px;
    background: var(--bg-panel);
    border-left: 3px solid var(--brand);
    border-radius: 0 var(--radius-tag) var(--radius-tag) 0;
    font-size: 14px;
    color: var(--ink-2);
    line-height: 1.7;
  }

  .process-timeline {
    position: relative;
    padding-left: 0;
  }

  .process-step {
    display: grid;
    grid-template-columns: 56px 1fr;
    gap: 20px;
    padding: 24px 0;
    border-bottom: 1px solid var(--line);
    transition: padding-left 0.3s var(--ease);
  }

  .process-step:last-child {
    border-bottom: none;
  }

  .process-step:hover {
    padding-left: 8px;
  }

  .step-num {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--brand-soft);
    color: var(--brand-deep);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: "DIN Alternate", "Noto Sans SC", sans-serif;
    font-size: 18px;
    font-weight: 700;
    transition: background-color 0.3s var(--ease), color 0.3s var(--ease);
  }

  .process-step:hover .step-num {
    background: var(--brand);
    color: #fff;
  }

  .step-content h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 6px;
  }

  .step-content p {
    font-size: 14px;
    color: var(--ink-2);
    line-height: 1.7;
  }

  /* ===== FAQ ===== */
  .faq-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
  }

  @media (min-width: 1024px) {
    .faq-layout {
      grid-template-columns: 4fr 8fr;
      gap: 64px;
    }
  }

  .faq-heading .section-title {
    margin-bottom: 16px;
  }

  .faq-heading .section-desc {
    margin-bottom: 24px;
  }

  .faq-contact-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--brand-deep);
    padding-bottom: 2px;
    border-bottom: 2px solid rgba(184, 123, 40, 0.3);
    transition: border-color 0.3s var(--ease), color 0.3s var(--ease);
  }

  .faq-contact-link:hover {
    border-color: var(--brand);
    color: var(--brand);
  }

  .faq-list {
    width: 100%;
  }

  .faq-item {
    border-bottom: 1px solid var(--line);
    transition: background-color 0.3s var(--ease);
  }

  .faq-item.open {
    background: var(--bg-panel);
  }

  .faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 22px 16px;
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    background: transparent;
    border: none;
    text-align: left;
    transition: color 0.3s var(--ease);
    min-height: 44px;
  }

  .faq-question:hover {
    color: var(--brand);
  }

  .faq-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid var(--line);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 300;
    transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), color 0.3s var(--ease);
    flex-shrink: 0;
    margin-left: 16px;
  }

  .faq-item.open .faq-icon {
    transform: rotate(45deg);
    border-color: var(--brand);
    color: var(--brand);
  }

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s var(--ease);
  }

  .faq-item.open .faq-answer {
    max-height: 360px;
  }

  .faq-answer p {
    padding: 0 16px 22px;
    color: var(--ink-2);
    font-size: 15px;
    line-height: 1.75;
  }

  /* ===== CTA Strip ===== */
  .cta-strip {
    background: var(--bg-base);
    padding: 72px 0;
    position: relative;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .cta-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 20px;
    max-width: 720px;
    margin: 0 auto;
  }

  .cta-inner h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--ink);
    line-height: 1.3;
  }

  @media (min-width: 768px) {
    .cta-inner h2 {
      font-size: 32px;
    }
  }

  .cta-inner p {
    font-size: 16px;
    color: var(--ink-2);
    line-height: 1.7;
  }

  .cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
  }

  .btn-outline-dark {
    background: transparent;
    border-color: var(--ink);
    color: var(--ink);
  }

  .btn-outline-dark:hover {
    background: var(--bg-panel);
    transform: translateY(-2px);
  }

  .btn-outline-dark:active {
    transform: translateY(0);
  }

  /* ===== Footer ===== */
  .site-footer {
    background: var(--bg-deep);
    color: var(--ink-invert);
    padding: 72px 0 40px;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    padding-bottom: 48px;
    border-bottom: 1px solid var(--line-deep);
  }

  @media (min-width: 768px) {
    .footer-grid {
      grid-template-columns: 1fr 1fr;
      gap: 40px;
    }
  }

  @media (min-width: 1024px) {
    .footer-grid {
      grid-template-columns: 2fr 1fr 1fr 1.4fr;
      gap: 48px;
    }
  }

  .footer-brand .site-logo {
    font-size: 20px;
    font-weight: 800;
    color: var(--ink-invert);
    display: inline-block;
    margin-bottom: 16px;
  }

  .footer-brand .site-logo:hover {
    color: var(--brand);
  }

  .footer-desc {
    font-size: 14px;
    line-height: 1.7;
    color: rgba(242, 239, 233, 0.55);
    max-width: 280px;
  }

  .footer-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--ink-invert);
    margin-bottom: 20px;
    letter-spacing: 0.04em;
  }

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

  .footer-links a {
    font-size: 14px;
    color: rgba(242, 239, 233, 0.6);
    transition: color 0.3s var(--ease), padding-left 0.3s var(--ease);
  }

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

  .footer-contact-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .footer-contact-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: rgba(242, 239, 233, 0.6);
  }

  .fc-icon {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(184, 123, 40, 0.12);
    border-radius: var(--radius-tag);
    font-size: 13px;
  }

  .footer-bottom {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-top: 28px;
    border-top: 1px solid var(--line-deep);
    align-items: center;
    justify-content: space-between;
  }

  @media (min-width: 768px) {
    .footer-bottom {
      flex-direction: row;
    }
  }

  .footer-copy {
    font-size: 13px;
    color: rgba(242, 239, 233, 0.45);
  }

  .footer-bottom-links {
    display: flex;
    gap: 20px;
  }

  .footer-bottom-links a {
    font-size: 13px;
    color: rgba(242, 239, 233, 0.45);
    transition: color 0.3s var(--ease);
  }

  .footer-bottom-links a:hover {
    color: var(--brand);
  }

  /* ===== Reveal Animation ===== */
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  }

  .reveal.visible {
    opacity: 1;
    transform: translateY(0);
  }

  /* ===== Responsive ===== */
  @media (max-width: 640px) {
    .cat-hero-actions {
      flex-direction: column;
      align-items: stretch;
    }

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

    .cta-actions {
      flex-direction: column;
      align-items: stretch;
      width: 100%;
    }

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

    .feature-content {
      padding: 20px;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      animation-duration: 0.01ms !important;
      transition-duration: 0.01ms !important;
    }
  }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
  :root {
    --bg-base: #F7F4EF;
    --bg-deep: #161411;
    --bg-panel: #EFEBE4;
    --brand: #B87B28;
    --brand-deep: #8E5C1E;
    --brand-soft: #F0E6D6;
    --ink: #1C1B18;
    --ink-2: #5C5A55;
    --ink-3: #8A877F;
    --ink-invert: #F2EFE9;
    --line: #DCD7CE;
    --line-deep: #3A362F;
    --success: #3E6B4F;
    --radius-card: 16px;
    --radius-btn: 999px;
    --shadow-card: 0 1px 3px rgba(22, 18, 12, 0.06), 0 8px 24px rgba(22, 18, 12, 0.05);
    --shadow-hover: 0 2px 6px rgba(22, 18, 12, 0.08), 0 18px 40px rgba(22, 18, 12, 0.10);
    --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  }

  /* ===== Reset ===== */
  *,
  *::before,
  *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 16px;
    line-height: 1.75;
    color: var(--ink);
    background: var(--bg-base);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

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

  a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
  }

  button {
    font-family: inherit;
    border: none;
    background: none;
    cursor: pointer;
  }

  input,
  textarea {
    font-family: inherit;
  }

  h1,
  h2,
  h3,
  h4 {
    line-height: 1.25;
    font-weight: 800;
  }

  ul,
  ol {
    list-style: none;
  }

  .container {
    max-width: 1280px;
    margin: 0 auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }

  @media (min-width: 1024px) {
    .container {
      padding-left: 2rem;
      padding-right: 2rem;
    }
  }

  /* ===== Header ===== */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 72px;
    z-index: 100;
    background: transparent;
    transition: var(--transition);
    border-bottom: 1px solid transparent;
  }

  .site-header.scrolled {
    background: rgba(247, 244, 239, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom-color: var(--line);
  }

  .site-header.scrolled .site-logo,
  .site-header.scrolled .nav-link {
    color: var(--ink);
  }

  .site-header.scrolled .nav-link:hover {
    color: var(--brand);
  }

  .site-header.scrolled .dropdown-menu {
    background: var(--bg-base);
    border-color: var(--line);
  }

  .header-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    height: 72px;
    gap: 1rem;
  }

  .site-logo {
    font-size: 1.25rem;
    font-weight: 900;
    letter-spacing: 0.02em;
    color: var(--ink-invert);
    white-space: nowrap;
    transition: var(--transition);
    text-align: center;
    justify-self: center;
  }

  .site-header.scrolled .site-logo {
    color: var(--ink);
  }

  .nav-left,
  .nav-right {
    display: flex;
    align-items: center;
  }

  .nav-left {
    justify-content: flex-end;
    gap: 1.5rem;
  }

  .nav-right {
    justify-content: flex-start;
    gap: 1.5rem;
  }

  .nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--ink-invert);
    letter-spacing: 0.04em;
    padding: 0.5rem 0;
    position: relative;
    background: none;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    transition: var(--transition);
    min-height: 44px;
    line-height: 1.2;
  }

  .site-header.scrolled .nav-link {
    color: var(--ink);
  }

  .nav-link:hover {
    color: var(--brand);
  }

  .nav-link .chevron {
    font-size: 0.625rem;
    transition: var(--transition);
  }

  .nav-item {
    position: relative;
  }

  .dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    background: rgba(22, 20, 17, 0.96);
    border: 1px solid var(--line-deep);
    border-radius: 12px;
    padding: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: var(--transition);
    z-index: 50;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
  }

  .nav-item:hover .dropdown-menu,
  .nav-item:focus-within .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .dropdown-menu a {
    display: block;
    padding: 0.6rem 0.9rem;
    font-size: 0.875rem;
    color: var(--ink-invert);
    border-radius: 8px;
    transition: var(--transition);
  }

  .site-header.scrolled .dropdown-menu a {
    color: var(--ink);
  }

  .dropdown-menu a:hover,
  .dropdown-menu a.current {
    background: var(--brand-soft);
    color: var(--brand-deep);
  }

  .site-header.scrolled .dropdown-menu a:hover,
  .site-header.scrolled .dropdown-menu a.current {
    background: var(--brand-soft);
    color: var(--brand-deep);
  }

  .mobile-toggle {
    display: none;
    width: 44px;
    height: 44px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    border-radius: 8px;
    transition: var(--transition);
    justify-self: end;
  }

  .mobile-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--ink-invert);
    border-radius: 2px;
    transition: var(--transition);
  }

  .site-header.scrolled .mobile-toggle span {
    background: var(--ink);
  }

  .mobile-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .mobile-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .mobile-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .mobile-menu {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    height: calc(100vh - 72px);
    background: var(--bg-base);
    z-index: 99;
    padding: 1.5rem 1.5rem 3rem;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: var(--transition);
  }

  .mobile-menu.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
  }

  .mobile-link {
    display: block;
    padding: 0.85rem 0.5rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--ink);
    border-bottom: 1px solid var(--line);
    min-height: 44px;
    transition: var(--transition);
  }

  .mobile-link:hover,
  .mobile-link.current {
    color: var(--brand);
  }

  .mobile-subtitle {
    display: block;
    padding: 1rem 0.5rem 0.4rem;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink-3);
    font-weight: 600;
  }

  .mobile-sub-link {
    padding-left: 1.5rem;
  }

  /* ===== 按钮 ===== */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    height: 48px;
    padding: 0 1.75rem;
    border-radius: var(--radius-btn);
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    transition: var(--transition);
    white-space: nowrap;
    border: 1px solid transparent;
    cursor: pointer;
  }

  .btn:focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 3px;
  }

  .btn-primary {
    background: var(--brand);
    color: #fff;
  }

  .btn-primary:hover {
    background: var(--brand-deep);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(142, 92, 30, 0.3);
  }

  .btn-primary:active {
    background: #754A17;
    transform: translateY(0);
  }

  .btn-outline-light {
    border-color: rgba(255, 255, 255, 0.5);
    color: var(--ink-invert);
    background: transparent;
  }

  .btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: #fff;
    transform: translateY(-2px);
  }

  .btn-outline-light:active {
    transform: translateY(0);
  }

  .btn-dark {
    border-color: var(--ink);
    color: var(--ink);
    background: transparent;
  }

  .btn-dark:hover {
    background: var(--bg-panel);
    border-color: var(--ink);
    transform: translateY(-2px);
  }

  .btn-dark:active {
    transform: translateY(0);
  }

  /* ===== Hero ===== */
  .page-hero {
    position: relative;
    min-height: 520px;
    display: flex;
    align-items: center;
    background: var(--bg-deep);
    overflow: hidden;
    padding: 7rem 0 4.5rem;
  }

  .hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.4;
  }

  .hero-bg::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(100deg, rgba(22, 20, 17, 0.98) 20%, rgba(22, 20, 17, 0.75) 55%, rgba(22, 20, 17, 0.5) 100%);
  }

  .page-hero-inner {
    position: relative;
    z-index: 2;
    max-width: 920px;
    margin: 0 auto;
    text-align: center;
  }

  .hero-kicker {
    display: inline-block;
    font-size: 0.8125rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--brand);
    font-weight: 600;
    margin-bottom: 1.25rem;
    border: 1px solid var(--line-deep);
    padding: 0.35rem 1rem;
    border-radius: 6px;
    background: rgba(184, 123, 40, 0.06);
  }

  .page-hero h1 {
    font-size: 2.25rem;
    font-weight: 900;
    color: var(--ink-invert);
    line-height: 1.2;
    letter-spacing: -0.01em;
    margin-bottom: 1.25rem;
  }

  .hero-subtitle {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: rgba(242, 239, 233, 0.82);
    max-width: 720px;
    margin: 0 auto 2rem;
  }

  .hero-actions {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
  }

  .hero-line {
    width: 52px;
    height: 2px;
    background: var(--brand);
    margin: 0 auto 1.5rem;
  }

  /* ===== Section 通用 ===== */
  .section {
    padding: 4.5rem 0;
  }

  @media (min-width: 1024px) {
    .section {
      padding: 6.5rem 0;
    }
  }

  .section-head {
    margin-bottom: 3rem;
    max-width: 720px;
  }

  .section-head.center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
  }

  .section-kicker {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--brand);
    margin-bottom: 0.4rem;
  }

  .section-head h2 {
    font-size: 1.875rem;
    font-weight: 800;
    color: var(--ink);
    line-height: 1.25;
    margin-bottom: 0.75rem;
  }

  .section-head p {
    color: var(--ink-2);
    font-size: 1rem;
    line-height: 1.75;
  }

  .bg-deep {
    background: var(--bg-deep);
    color: var(--ink-invert);
  }

  .bg-deep .section-head h2 {
    color: var(--ink-invert);
  }

  .bg-deep .section-head p {
    color: rgba(242, 239, 233, 0.72);
  }

  .bg-panel {
    background: var(--bg-panel);
  }

  /* ===== Brand Story ===== */
  .story-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
  }

  @media (min-width: 1024px) {
    .story-grid {
      grid-template-columns: 1.05fr 0.95fr;
      gap: 5rem;
    }
  }

  .story-content p {
    margin-top: 1rem;
    color: var(--ink-2);
  }

  .story-media {
    position: relative;
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-card);
  }

  .story-media img {
    width: 100%;
    height: 100%;
    min-height: 320px;
    object-fit: cover;
    border-radius: var(--radius-card);
  }

  .story-badge {
    position: absolute;
    top: 1.5rem;
    right: -6px;
    background: var(--bg-deep);
    color: var(--ink-invert);
    font-size: 0.8125rem;
    font-weight: 600;
    padding: 0.6rem 1.2rem;
    border-radius: 8px 0 0 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    border-left: 3px solid var(--brand);
  }

  /* ===== 折叠区 + 亮点卡 ===== */
  .guide-wrap {
    max-width: 960px;
    margin: 0 auto 2.5rem;
  }

  .collapse-item {
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    background: var(--bg-base);
    margin-bottom: 1rem;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-card);
  }

  .collapse-item.active {
    border-color: var(--brand);
    background: var(--bg-base);
  }

  .collapse-head {
    display: flex;
    align-items: center;
    gap: 1rem;
    width: 100%;
    padding: 1.25rem 1.5rem;
    text-align: left;
    background: transparent;
    transition: var(--transition);
    cursor: pointer;
    min-height: 56px;
  }

  .collapse-head:hover {
    background: var(--brand-soft);
  }

  .collapse-num {
    font-family: "DIN Alternate", "Bebas Neue", sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--brand);
    min-width: 40px;
  }

  .collapse-title {
    flex: 1;
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--ink);
  }

  .collapse-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--brand-soft);
    color: var(--brand-deep);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    font-weight: 600;
    transition: var(--transition);
    flex-shrink: 0;
  }

  .collapse-item.active .collapse-icon {
    transform: rotate(45deg);
    background: var(--brand);
    color: #fff;
  }

  .collapse-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  }

  .collapse-body-inner {
    padding: 0 1.5rem 1.5rem 5.5rem;
    color: var(--ink-2);
    font-size: 0.9375rem;
  }

  .collapse-body-inner p {
    margin-bottom: 0.75rem;
  }

  .collapse-body-inner ul {
    list-style: disc;
    padding-left: 1.25rem;
    margin-top: 0.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
  }

  /* 亮点小卡 */
  .topics-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.25rem;
    max-width: 960px;
    margin: 0 auto;
  }

  @media (min-width: 640px) {
    .topics-grid {
      grid-template-columns: 1fr 1fr;
    }
  }

  @media (min-width: 1024px) {
    .topics-grid {
      grid-template-columns: repeat(4, 1fr);
    }
  }

  .topic-card {
    background: var(--bg-base);
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    padding: 1.75rem 1.5rem;
    box-shadow: var(--shadow-card);
    transition: var(--transition);
  }

  .topic-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: var(--brand);
  }

  .topic-card-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--brand-soft);
    color: var(--brand-deep);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 1rem;
    font-weight: 700;
  }

  .topic-card h3 {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 0.5rem;
  }

  .topic-card p {
    font-size: 0.875rem;
    color: var(--ink-2);
    line-height: 1.65;
  }

  /* ===== 数据带 ===== */
  .data-band {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  @media (min-width: 1024px) {
    .data-band {
      grid-template-columns: repeat(4, 1fr);
      gap: 3rem;
    }
  }

  .data-item {
    text-align: center;
    padding: 1.5rem 1rem;
    border: 1px solid var(--line-deep);
    border-radius: var(--radius-card);
    transition: var(--transition);
    background: rgba(255, 255, 255, 0.02);
  }

  .data-item:hover {
    border-color: var(--brand);
    background: rgba(184, 123, 40, 0.06);
  }

  .data-num {
    font-family: "DIN Alternate", "Bebas Neue", sans-serif;
    font-size: 2.75rem;
    font-weight: 700;
    color: var(--brand);
    line-height: 1.1;
    letter-spacing: -0.01em;
  }

  .data-label {
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: rgba(242, 239, 233, 0.75);
    letter-spacing: 0.04em;
  }

  .data-line {
    width: 32px;
    height: 2px;
    background: var(--brand);
    margin: 0.85rem auto 0;
    border-radius: 2px;
  }

  /* ===== 适用场景 + 流程 ===== */
  .scenario-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }

  @media (min-width: 1024px) {
    .scenario-layout {
      grid-template-columns: 1fr 1fr;
      gap: 4rem;
    }
  }

  .scenario-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  @media (min-width: 640px) {
    .scenario-grid {
      grid-template-columns: 1fr 1fr;
    }
  }

  .scenario-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--line-deep);
    border-radius: var(--radius-card);
    padding: 1.5rem;
    transition: var(--transition);
  }

  .scenario-card:hover {
    border-color: var(--brand);
    transform: translateY(-3px);
    background: rgba(184, 123, 40, 0.05);
  }

  .scenario-tag {
    display: inline-block;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    color: var(--brand);
    border: 1px solid var(--line-deep);
    padding: 0.2rem 0.6rem;
    border-radius: 6px;
    margin-bottom: 0.75rem;
    font-weight: 600;
  }

  .scenario-card h3 {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--ink-invert);
    margin-bottom: 0.5rem;
  }

  .scenario-card p {
    font-size: 0.875rem;
    color: rgba(242, 239, 233, 0.68);
    line-height: 1.65;
  }

  .process-side h2 {
    color: var(--ink-invert);
  }

  .process-side>p {
    color: rgba(242, 239, 233, 0.72);
    margin-top: 0.5rem;
    margin-bottom: 2rem;
  }

  .process-list {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
  }

  .process-step {
    display: flex;
    gap: 1.25rem;
    position: relative;
  }

  .process-step:not(:last-child)::after {
    content: "";
    position: absolute;
    left: 23px;
    top: 52px;
    bottom: -20px;
    width: 1px;
    background: var(--line-deep);
  }

  .process-num {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 1px solid var(--brand);
    color: var(--brand);
    font-family: "DIN Alternate", sans-serif;
    font-size: 1.125rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: rgba(184, 123, 40, 0.08);
  }

  .process-step-text {
    padding-top: 0.2rem;
  }

  .process-step-text h4 {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--ink-invert);
    margin-bottom: 0.3rem;
  }

  .process-step-text p {
    font-size: 0.875rem;
    color: rgba(242, 239, 233, 0.65);
    line-height: 1.65;
  }

  /* ===== FAQ ===== */
  .faq-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  @media (min-width: 1024px) {
    .faq-layout {
      grid-template-columns: 0.7fr 1.3fr;
      gap: 4rem;
    }
  }

  .faq-intro .section-kicker {
    margin-bottom: 0.4rem;
  }

  .faq-intro p {
    color: var(--ink-2);
    margin-top: 1rem;
  }

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

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

  .faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    width: 100%;
    padding: 1.25rem 0;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    color: var(--ink);
    min-height: 56px;
    transition: var(--transition);
    cursor: pointer;
  }

  .faq-question:hover {
    color: var(--brand);
  }

  .faq-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--brand-soft);
    color: var(--brand-deep);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
    transition: var(--transition);
  }

  .faq-item.open .faq-icon {
    transform: rotate(45deg);
    background: var(--brand);
    color: #fff;
  }

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  }

  .faq-answer-inner {
    padding: 0 0 1.5rem;
    color: var(--ink-2);
    font-size: 0.9375rem;
    line-height: 1.75;
  }

  /* ===== CTA ===== */
  .cta-band {
    background: var(--bg-panel);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 3rem 2rem;
    text-align: center;
    max-width: 960px;
    margin: 0 auto;
    box-shadow: var(--shadow-card);
  }

  .cta-band h2 {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--ink);
    margin-bottom: 0.5rem;
  }

  .cta-band p {
    color: var(--ink-2);
    margin-bottom: 1.75rem;
    font-size: 1rem;
  }

  .cta-actions {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
  }

  /* ===== Footer ===== */
  .site-footer {
    background: var(--bg-deep);
    color: rgba(242, 239, 233, 0.7);
    padding: 4rem 0 0;
    margin-top: 2rem;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--line-deep);
  }

  @media (min-width: 768px) {
    .footer-grid {
      grid-template-columns: 1.2fr 0.8fr 0.9fr 1fr;
      gap: 2rem;
    }
  }

  .site-footer .site-logo {
    color: var(--ink-invert);
    justify-self: start;
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
  }

  .footer-desc {
    font-size: 0.875rem;
    color: rgba(242, 239, 233, 0.55);
    line-height: 1.7;
    max-width: 300px;
  }

  .footer-title {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--ink-invert);
    margin-bottom: 1rem;
  }

  .footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
  }

  .footer-links a,
  .footer-contact-list li {
    color: rgba(242, 239, 233, 0.65);
    font-size: 0.875rem;
    transition: var(--transition);
    line-height: 1.6;
  }

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

  .footer-contact-list {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
  }

  .footer-contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
  }

  .fc-icon {
    color: var(--brand);
    flex-shrink: 0;
    font-size: 0.9375rem;
  }

  .footer-bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 1.5rem 0;
  }

  @media (min-width: 768px) {
    .footer-bottom {
      flex-direction: row;
      justify-content: space-between;
    }
  }

  .footer-copy {
    font-size: 0.8125rem;
    color: rgba(242, 239, 233, 0.45);
  }

  .footer-bottom-links {
    display: flex;
    gap: 1.5rem;
  }

  .footer-bottom-links a {
    font-size: 0.8125rem;
    color: rgba(242, 239, 233, 0.45);
    transition: var(--transition);
  }

  .footer-bottom-links a:hover {
    color: var(--brand);
  }

  /* ===== 滚动显现 ===== */
  .reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  }

  .reveal.visible {
    opacity: 1;
    transform: translateY(0);
  }

  /* ===== 移动端适配 ===== */
  @media (max-width: 1024px) {
    .nav-left,
    .nav-right {
      display: none;
    }

    .header-grid {
      grid-template-columns: 1fr auto 1fr;
    }

    .mobile-toggle {
      display: flex;
    }

    .site-logo {
      font-size: 1.0625rem;
    }
  }

  @media (max-width: 640px) {
    .page-hero {
      min-height: 480px;
      padding: 5.5rem 0 3.5rem;
    }

    .page-hero h1 {
      font-size: 1.625rem;
    }

    .hero-subtitle {
      font-size: 0.9375rem;
    }

    .section-head h2 {
      font-size: 1.5rem;
    }

    .collapse-body-inner {
      padding: 0 1.25rem 1.25rem;
    }

    .collapse-title {
      font-size: 0.9375rem;
    }

    .data-band {
      gap: 1rem;
    }

    .data-num {
      font-size: 2rem;
    }

    .cta-band {
      padding: 2rem 1.25rem;
    }

    .cta-band h2 {
      font-size: 1.4rem;
    }
  }

  @media (max-width: 420px) {
    .page-hero h1 {
      font-size: 1.375rem;
    }

    .btn {
      padding: 0 1.25rem;
      font-size: 0.875rem;
    }

    .site-logo {
      font-size: 0.9375rem;
    }

    .collapse-head {
      padding: 1rem;
    }

    .collapse-num {
      font-size: 1.25rem;
      min-width: 32px;
    }

    .collapse-icon {
      width: 24px;
      height: 24px;
    }

    .collapse-body-inner {
      padding: 0 1rem 1rem;
    }
  }

/* roulang page: category3 */
:root {
    --bg-base: #F7F4EF;
    --bg-deep: #161411;
    --bg-panel: #EFEBE4;
    --brand: #B87B28;
    --brand-deep: #8E5C1E;
    --brand-soft: #F0E6D6;
    --ink: #1C1B18;
    --ink-2: #5C5A55;
    --ink-3: #8A877F;
    --ink-invert: #F2EFE9;
    --line: #DCD7CE;
    --line-deep: #3A362F;
    --shadow-card: 0 1px 3px rgba(22,18,12,0.06), 0 8px 24px rgba(22,18,12,0.05);
    --shadow-hover: 0 4px 12px rgba(22,18,12,0.10), 0 16px 32px rgba(22,18,12,0.08);
    --radius-card: 16px;
    --radius-btn: 999px;
    --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  }

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

  html { scroll-behavior: smooth; }

  body {
    font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg-base);
    color: var(--ink);
    line-height: 1.75;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
  }

  img { max-width: 100%; display: block; }
  a { text-decoration: none; color: inherit; transition: var(--transition); }
  ul, ol { list-style: none; }
  button { font-family: inherit; border: none; background: none; cursor: pointer; color: inherit; }
  input, textarea { font-family: inherit; }

  .container {
    max-width: 1280px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
  }

  .section { padding: 72px 0; }
  @media (min-width: 1024px) { .section { padding: 112px 0; } }

  .eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--brand);
    margin-bottom: 12px;
  }

  .eyebrow-dark { color: var(--brand); }

  .section-title {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.25;
    color: var(--ink);
  }
  @media (min-width: 768px) { .section-title { font-size: 36px; } }

  .text-deep-section .section-title { color: var(--ink-invert); }
  .text-deep-section .text-ink-2 { color: rgba(242, 239, 233, 0.7); }

  .font-number {
    font-family: "DIN Alternate", "Bebas Neue", "Noto Sans SC", sans-serif;
  }

  /* Buttons */
  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 48px;
    padding: 0 28px;
    border-radius: var(--radius-btn);
    background: var(--brand);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
  }
  .btn-primary:hover { background: var(--brand-deep); transform: translateY(-2px); box-shadow: var(--shadow-hover); }
  .btn-primary:active { transform: translateY(0); background: #704A18; }
  .btn-primary:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; }

  .btn-outline-dark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 48px;
    padding: 0 28px;
    border-radius: var(--radius-btn);
    border: 1px solid rgba(28, 27, 24, 0.32);
    background: transparent;
    color: var(--ink);
    font-size: 15px;
    font-weight: 600;
    transition: var(--transition);
    white-space: nowrap;
  }
  .btn-outline-dark:hover { background: var(--bg-panel); border-color: var(--ink); }
  .btn-outline-dark:active { background: var(--brand-soft); }
  .btn-outline-dark:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; }

  .btn-outline-light {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 48px;
    padding: 0 28px;
    border-radius: var(--radius-btn);
    border: 1px solid rgba(242, 239, 233, 0.55);
    background: transparent;
    color: var(--ink-invert);
    font-size: 15px;
    font-weight: 600;
    transition: var(--transition);
    white-space: nowrap;
  }
  .btn-outline-light:hover { background: rgba(255, 255, 255, 0.08); border-color: #fff; }
  .btn-outline-light:active { background: rgba(255, 255, 255, 0.14); }
  .btn-outline-light:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; }

  /* Header */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: 72px;
    transition: var(--transition);
    background: transparent;
  }
  .site-header .container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
  }
  .site-header.scrolled {
    background: rgba(247, 244, 239, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
  }
  .site-header.scrolled .site-logo,
  .site-header.scrolled .nav-link { color: var(--ink); }
  .site-header.scrolled .nav-link:hover { color: var(--brand); }

  .site-logo {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    font-size: 19px;
    font-weight: 800;
    letter-spacing: 0.01em;
    color: var(--ink-invert);
    white-space: nowrap;
    transition: var(--transition);
  }
  .site-header.scrolled .site-logo { color: var(--ink); }
  .site-logo:hover { color: var(--brand); }

  .nav-left,
  .nav-right {
    display: flex;
    align-items: center;
    gap: 28px;
  }
  .nav-right { justify-content: flex-end; }

  .nav-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--ink-invert);
    padding: 8px 0;
    position: relative;
    line-height: 1.4;
    transition: var(--transition);
    background: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
  }
  .site-header.scrolled .nav-link { color: var(--ink); }
  .nav-link:hover { color: var(--brand); }
  .nav-link.active { color: var(--brand); font-weight: 600; }
  .nav-link.active::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 2px;
    height: 2px;
    background: var(--brand);
    border-radius: 2px;
  }

  .chevron { font-size: 10px; transition: transform 0.3s; }

  .nav-item { position: relative; }
  .nav-item .dropdown-toggle[aria-expanded="true"] .chevron { transform: rotate(180deg); }

  .dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(6px);
    min-width: 190px;
    background: var(--bg-base);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 8px;
    box-shadow: var(--shadow-hover);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 90;
  }
  .nav-item:hover .dropdown-menu,
  .nav-item:focus-within .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
  }
  .dropdown-menu a {
    display: block;
    padding: 10px 16px;
    border-radius: 10px;
    font-size: 14px;
    color: var(--ink);
    line-height: 1.5;
  }
  .dropdown-menu a:hover { background: var(--brand-soft); color: var(--brand-deep); }
  .dropdown-menu a.active { color: var(--brand); font-weight: 600; background: var(--brand-soft); }

  /* Mobile toggle */
  .menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 10px;
    border-radius: 10px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.14);
    transition: var(--transition);
    z-index: 110;
  }
  .site-header.scrolled .menu-toggle { background: var(--bg-panel); border-color: var(--line); }
  .menu-toggle span {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--ink-invert);
    border-radius: 4px;
    transition: var(--transition);
  }
  .site-header.scrolled .menu-toggle span { background: var(--ink); }
  .menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle.active span:nth-child(2) { opacity: 0; }
  .menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .mobile-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-base);
    padding: 32px 28px 48px;
    z-index: 95;
    display: flex;
    flex-direction: column;
    gap: 6px;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: var(--transition);
  }
  .mobile-menu.open { opacity: 1; visibility: visible; transform: translateY(0); }

  .mobile-link {
    display: block;
    font-size: 17px;
    font-weight: 600;
    color: var(--ink);
    padding: 12px 8px;
    border-radius: 12px;
    transition: var(--transition);
    min-height: 46px;
  }
  .mobile-link:hover { background: var(--brand-soft); color: var(--brand-deep); }
  .mobile-link.active { color: var(--brand); background: var(--brand-soft); }
  .mobile-sub { margin: 8px 0 4px; }
  .mobile-sub-title { font-size: 13px; letter-spacing: 0.08em; color: var(--ink-3); padding: 8px 8px 4px; display: block; }
  .mobile-sub .mobile-link { font-size: 15px; padding-top: 10px; padding-bottom: 10px; }

  /* Hero */
  .hero-cat { position: relative; overflow: hidden; }
  .hero-cat-bg { position: absolute; inset: 0; }
  .hero-cat-bg img { width: 100%; height: 100%; object-fit: cover; opacity: 0.35; }
  .hero-cat-bg::after { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(22,20,17,0.92) 0%, rgba(22,20,17,0.78) 55%, rgba(22,20,17,0.50) 100%); }
  .hero-cat .container { position: relative; z-index: 2; }

  .hero-cat h1 {
    font-size: 32px;
    line-height: 1.22;
    font-weight: 900;
    color: var(--ink-invert);
    letter-spacing: 0.01em;
  }
  @media (min-width: 768px) { .hero-cat h1 { font-size: 42px; } }

  .hero-sub {
    color: rgba(242, 239, 233, 0.75);
    font-size: 16px;
    line-height: 1.9;
    max-width: 540px;
  }

  .hero-tag-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    width: 100%;
    max-width: 440px;
  }
  .hero-tag-card {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.10);
    border-radius: 16px;
    padding: 18px 20px;
    backdrop-filter: blur(6px);
    transition: var(--transition);
  }
  .hero-tag-card:hover { background: rgba(184,123,40,0.14); border-color: rgba(184,123,40,0.45); transform: translateY(-3px); }
  .hero-tag-key { display: block; font-size: 13px; color: rgba(242,239,233,0.55); letter-spacing: 0.06em; }
  .hero-tag-val { display: block; font-size: 20px; font-weight: 700; color: var(--brand); margin-top: 4px; }

  /* Trust line */
  .trust-line { border-bottom: 1px solid var(--line); }
  .trust-item { display: flex; align-items: center; gap: 8px; font-size: 15px; font-weight: 500; color: var(--ink-2); letter-spacing: 0.04em; }
  .trust-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--brand); display: inline-block; }

  /* Logical section */
  .check-list li { font-size: 15px; color: var(--ink-2); line-height: 1.7; }
  .check-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--brand);
    flex-shrink: 0;
    margin-top: 9px;
    box-shadow: 0 0 0 3px rgba(184,123,40,0.12);
  }

  /* Timeline */
  .timeline { position: relative; padding-left: 68px; margin-top: 48px; max-width: 820px; }
  .timeline::before {
    content: '';
    position: absolute;
    left: 19px;
    top: 8px;
    bottom: 8px;
    width: 1px;
    background: linear-gradient(to bottom, var(--brand) 0%, var(--line-deep) 50%, var(--line-deep) 100%);
  }
  .timeline-item { position: relative; padding-bottom: 52px; }
  .timeline-item:last-child { padding-bottom: 0; }

  .timeline-number {
    position: absolute;
    left: -68px;
    top: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--brand);
    color: var(--brand);
    background: var(--bg-deep);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: "DIN Alternate", "Bebas Neue", sans-serif;
    font-size: 14px;
    font-weight: 700;
    z-index: 1;
  }

  .timeline-content h3 { font-size: 20px; font-weight: 700; color: var(--ink-invert); margin-bottom: 8px; }
  .timeline-content p { color: rgba(242, 239, 233, 0.65); font-size: 15px; line-height: 1.8; max-width: 640px; }

  .timeline-content h3::before {
    content: '';
    display: inline-block;
    width: 7px;
    height: 7px;
    background: var(--brand);
    border-radius: 50%;
    margin-right: 10px;
    vertical-align: middle;
  }

  /* Table */
  .table-wrap {
    border-radius: 16px;
    border: 1px solid var(--line);
    background: #fff;
    box-shadow: var(--shadow-card);
  }
  .param-table { width: 100%; border-collapse: collapse; min-width: 560px; }
  .param-table th, .param-table td { text-align: left; padding: 18px 22px; font-size: 15px; }
  .param-table thead th {
    background: var(--bg-deep);
    color: var(--ink-invert);
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 0.04em;
  }
  .param-table thead th:first-child { border-radius: 15px 0 0 0; }
  .param-table thead th:last-child { border-radius: 0 15px 0 0; }
  .param-table tbody td { border-top: 1px solid var(--line); color: var(--ink); line-height: 1.7; }
  .param-table tbody tr:first-child td { border-top: none; }
  .param-table tbody tr { transition: background 0.2s; }
  .param-table tbody tr:hover { background: var(--brand-soft); }
  .param-table tbody td:first-child { font-weight: 600; color: var(--brand-deep); width: 24%; }

  /* FAQ */
  .faq-list { display: flex; flex-direction: column; gap: 0; }
  .faq-item {
    border-bottom: 1px solid var(--line);
    transition: var(--transition);
  }
  .faq-item.open { background: var(--brand-soft); border-radius: 14px; border-bottom-color: transparent; padding: 0 18px; margin-bottom: 8px; }
  .faq-item:not(.open):hover { background: rgba(240, 230, 214, 0.45); border-radius: 14px; padding: 0 18px; }
  .faq-item:not(.open) { padding: 0 18px; }

  .faq-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    width: 100%;
    text-align: left;
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    padding: 20px 0;
    min-height: 64px;
    transition: var(--transition);
  }
  .faq-btn:hover { color: var(--brand); }

  .faq-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(184,123,40,0.12);
    color: var(--brand);
    font-size: 20px;
    font-weight: 400;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform 0.35s ease;
    line-height: 1;
  }
  .faq-item.open .faq-icon { transform: rotate(45deg); background: var(--brand); color: #fff; }

  .faq-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
  }
  .faq-item.open .faq-body { max-height: 400px; padding-bottom: 18px; }
  .faq-body p { color: var(--ink-2); font-size: 15px; line-height: 1.85; }

  /* CTA */
  .section-cta { border-top: 1px solid var(--line); }

  /* Reveal animation */
  .reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.8s ease, transform 0.8s ease; }
  .reveal.visible { opacity: 1; transform: translateY(0); }

  /* Footer */
  .site-footer { background: var(--bg-deep); color: rgba(242, 239, 233, 0.62); padding: 72px 0 0; }
  .footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 44px;
    padding-bottom: 56px;
  }
  @media (min-width: 768px) { .footer-grid { grid-template-columns: 1.2fr 1fr 1fr 1.1fr; gap: 48px; } }

  .site-footer .site-logo { position: static; transform: none; font-size: 22px; color: var(--ink-invert); }
  .footer-desc { margin-top: 16px; font-size: 14px; line-height: 1.85; color: rgba(242, 239, 233, 0.55); max-width: 300px; }

  .footer-title { font-size: 15px; font-weight: 700; color: var(--ink-invert); margin-bottom: 20px; }
  .footer-links li + li { margin-top: 10px; }
  .footer-links a { font-size: 14px; color: rgba(242, 239, 233, 0.62); transition: var(--transition); }
  .footer-links a:hover { color: var(--brand); padding-left: 4px; }

  .footer-contact-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; line-height: 1.7; }
  .footer-contact-list li + li { margin-top: 12px; }
  .fc-icon { color: var(--brand); font-size: 15px; flex-shrink: 0; width: 18px; text-align: center; }

  .footer-bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    border-top: 1px solid var(--line-deep);
    padding: 24px 0 28px;
    font-size: 13px;
    color: rgba(242, 239, 233, 0.45);
    text-align: center;
  }
  @media (min-width: 768px) {
    .footer-bottom { flex-direction: row; justify-content: space-between; text-align: left; }
  }
  .footer-bottom-links { display: flex; gap: 20px; }
  .footer-bottom-links a { color: rgba(242, 239, 233, 0.55); font-size: 13px; transition: var(--transition); }
  .footer-bottom-links a:hover { color: var(--brand); }

  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  /* Responsive */
  @media (max-width: 1023px) {
    .nav-left, .nav-right { display: none; }
    .menu-toggle { display: flex; }
    .site-header .container { justify-content: flex-end; }
    .site-logo { left: 50%; right: auto; transform: translateX(-50%) translateY(-50%); }
  }

  @media (max-width: 640px) {
    .container { padding-left: 18px; padding-right: 18px; }
    .section { padding: 56px 0; }
    .section-title { font-size: 26px; }
    .hero-cat h1 { font-size: 28px; }
    .hero-sub { font-size: 15px; }
    .hero-tag-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
    .hero-tag-card { padding: 14px 16px; }
    .hero-tag-val { font-size: 17px; }
    .timeline { padding-left: 54px; }
    .timeline-number { left: -54px; width: 34px; height: 34px; font-size: 13px; }
    .timeline::before { left: 17px; }
    .timeline-content h3 { font-size: 18px; }
    .timeline-content p { font-size: 14px; }
    .param-table th, .param-table td { padding: 14px 16px; font-size: 14px; }
    .faq-btn { font-size: 15px; }
    .faq-body p { font-size: 14px; }
    .footer-bottom { text-align: center; }
  }

  @media (max-width: 420px) {
    body { font-size: 15px; }
    .hero-tag-grid { grid-template-columns: 1fr; }
    .site-logo { font-size: 17px; }
  }