/* roulang page: index */
:root {
    --bg: #0A0F0D;
    --surface: #111815;
    --surface-2: #16201B;
    --primary: #C8FF3E;
    --accent: #FF4D6A;
    --text: #F0F5EF;
    --muted: #98A69C;
    --border: rgba(255,255,255,0.09);
    --radius: 16px;
    --radius-lg: 24px;
    --shadow: 0 8px 24px rgba(0,0,0,0.3);
    --shadow-hover: 0 0 0 1px rgba(200,255,62,0.15), 0 12px 32px rgba(0,0,0,0.5);
    --transition: all 0.3s ease;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    background: var(--bg);
    color: var(--text);
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    position: relative;
  }

  body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: radial-gradient(rgba(255,255,255,0.025) 1px, transparent 1px);
    background-size: 24px 24px;
    pointer-events: none;
    z-index: 0;
  }

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

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

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

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

  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding-inline: 1rem;
  }

  /* ---------- Header ---------- */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(10, 15, 13, 0.88);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 1rem;
  }

  .brand-logo {
    display: flex;
    align-items: center;
    gap: 2px;
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    flex-shrink: 0;
  }

  .logo-j9 {
    color: var(--primary);
  }

  .logo-text {
    color: #ffffff;
  }

  .main-nav {
    display: flex;
    align-items: center;
    gap: 0.375rem;
  }

  .nav-link {
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.9375rem;
    color: var(--muted);
    position: relative;
    font-weight: 500;
    transition: color 150ms ease;
  }

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

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

  .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 1rem;
    right: 1rem;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
  }

  .header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
  }

  .nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    border-radius: 0.5rem;
    border: 1px solid var(--border);
    background: var(--surface);
  }

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

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

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

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

  .mobile-nav {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 1rem;
    z-index: 99;
    flex-direction: column;
    gap: 0.25rem;
    transform: translateY(-120%);
    transition: transform 0.3s ease;
  }

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

  .mobile-link {
    padding: 0.875rem 1rem;
    border-radius: 0.75rem;
    font-size: 1rem;
    color: var(--text);
    font-weight: 500;
  }

  .mobile-link:hover {
    background: rgba(255,255,255,0.04);
    color: var(--primary);
  }

  .mobile-link.active {
    color: var(--primary);
    background: rgba(200,255,62,0.06);
  }

  .mobile-cta {
    margin-top: 0.75rem;
    justify-content: center;
    display: flex;
  }

  /* ---------- Buttons ---------- */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 0.75rem;
    font-size: 0.9375rem;
    font-weight: 700;
    line-height: 1.5;
    transition: all 0.2s ease;
    border: 1px solid transparent;
    min-height: 44px;
  }

  .btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(200,255,62,0.25);
  }

  .btn-primary {
    background: var(--primary);
    color: #0A0F0D;
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    filter: brightness(1.08);
    box-shadow: 0 8px 20px rgba(200,255,62,0.25);
  }

  .btn-primary:active {
    transform: scale(0.98);
  }

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

  .btn-outline:hover {
    background: rgba(200,255,62,0.12);
    transform: translateY(-2px);
  }

  .btn-outline:active {
    transform: scale(0.98);
  }

  .btn-dark {
    background: #000000;
    color: #ffffff;
  }

  .btn-dark:hover {
    background: #1C241F;
  }

  .btn-sm {
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
    min-height: 40px;
    border-radius: 0.625rem;
  }

  /* ---------- Hero ---------- */
  .hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background-image: linear-gradient(180deg, rgba(10,15,13,0.78), rgba(10,15,13,0.96)), url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    padding: 7rem 0 4rem;
  }

  .hero::after {
    content: '';
    position: absolute;
    right: -80px;
    bottom: -80px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(200,255,62,0.08) 0%, transparent 70%);
    pointer-events: none;
  }

  .hero .container {
    position: relative;
    z-index: 2;
  }

  .hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(200,255,62,0.08);
    border: 1px solid rgba(200,255,62,0.2);
    color: var(--primary);
    padding: 0.375rem 0.875rem;
    border-radius: 999px;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    margin-bottom: 1.25rem;
  }

  .hero-title {
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    line-height: 1.15;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: #ffffff;
    margin-bottom: 0.75em;
  }

  .hero-title .highlight {
    color: var(--primary);
  }

  .hero-subtitle {
    font-size: 1.125rem;
    line-height: 1.75;
    color: var(--muted);
    max-width: 560px;
    margin-bottom: 2rem;
  }

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

  .scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    color: var(--muted);
    font-size: 0.75rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    animation: bounce 2s infinite;
    z-index: 2;
  }

  @keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(6px); }
  }

  /* ---------- Section common ---------- */
  .section {
    padding: clamp(3rem, 8vh, 5.5rem) 0;
    position: relative;
  }

  .section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
  }

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

  .section-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.75rem;
  }

  .section-tag::before {
    content: '';
    width: 20px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
  }

  .section-title {
    font-size: clamp(1.5rem, 2.5vw, 2.1rem);
    line-height: 1.2;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: -0.01em;
  }

  .section-desc {
    color: var(--muted);
    margin-top: 0.75rem;
    font-size: 1rem;
    max-width: 620px;
  }

  /* ---------- Services ---------- */
  .services {
    background: var(--bg);
  }

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

  .service-row {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.75rem 1.25rem;
    border-bottom: 1px solid var(--border);
    position: relative;
    transition: background 150ms ease, transform 300ms ease;
  }

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

  .service-row::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--primary);
    transform: scaleY(0);
    transition: transform 300ms ease;
  }

  .service-row:hover {
    background: rgba(200,255,62,0.04);
  }

  .service-row:hover::before {
    transform: scaleY(1);
  }

  .service-num {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
    font-variant-numeric: tabular-nums;
    opacity: 0.9;
    flex-shrink: 0;
    width: 72px;
    font-family: inherit;
  }

  .service-body {
    flex: 1;
  }

  .service-body h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 0.25rem;
  }

  .service-body p {
    color: var(--muted);
    font-size: 0.9375rem;
    max-width: 600px;
  }

  .service-arrow {
    color: var(--muted);
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1px solid var(--border);
    transition: var(--transition);
  }

  .service-row:hover .service-arrow {
    background: var(--primary);
    color: var(--bg);
    border-color: var(--primary);
    transform: translateX(2px);
  }

  /* ---------- Stats ---------- */
  .stats {
    background: var(--surface-2);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }

  .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
  }

  .stat-item {
    padding: 2rem 1.5rem;
    text-align: center;
    position: relative;
  }

  .stat-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 25%;
    bottom: 25%;
    width: 1px;
    background: var(--border);
  }

  .stat-number {
    font-size: clamp(1.75rem, 3vw, 2.75rem);
    font-weight: 800;
    color: var(--primary);
    font-variant-numeric: tabular-nums;
    line-height: 1.1;
    display: block;
  }

  .stat-label {
    font-size: 0.875rem;
    color: var(--muted);
    margin-top: 0.5rem;
    display: block;
  }

  /* ---------- Cases ---------- */
  .cases-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }

  .case-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
  }

  .case-card:hover {
    transform: translateY(-4px);
    border-color: rgba(200,255,62,0.4);
    box-shadow: var(--shadow-hover);
  }

  .case-card.left {
    aspect-ratio: 4 / 3;
  }

  .case-card.right {
    aspect-ratio: 4 / 5;
    margin-top: 2rem;
  }

  .case-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 300ms ease;
  }

  .case-card:hover .case-cover {
    transform: scale(1.05);
  }

  .case-content {
    padding: 1.5rem;
  }

  .case-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.75rem;
    color: var(--primary);
    background: rgba(200,255,62,0.08);
    padding: 0.25rem 0.625rem;
    border-radius: 999px;
    font-weight: 600;
  }

  .case-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #ffffff;
    margin: 0.75rem 0 0.375rem;
  }

  .case-content p {
    color: var(--muted);
    font-size: 0.9375rem;
  }

  /* ---------- Solutions ---------- */
  .solutions {
    background: var(--bg);
  }

  .solutions-grid {
    display: grid;
    grid-template-columns: 0.85fr 1.15fr;
    gap: 3rem;
    align-items: start;
  }

  .solutions-left {
    position: sticky;
    top: 100px;
  }

  .solutions-left .section-title {
    margin-bottom: 0.75rem;
  }

  .solutions-left p {
    color: var(--muted);
    margin-bottom: 1.5rem;
  }

  .solutions-right {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
  }

  .solution-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
  }

  .solution-card:hover {
    border-color: rgba(200,255,62,0.4);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
  }

  .solution-num {
    position: absolute;
    top: 1.25rem;
    right: 1.5rem;
    font-size: 3rem;
    font-weight: 800;
    color: rgba(200,255,62,0.15);
    line-height: 1;
    font-variant-numeric: tabular-nums;
  }

  .solution-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 0.75rem;
  }

  .solution-card p {
    color: var(--muted);
    font-size: 0.9375rem;
    margin-bottom: 1.25rem;
  }

  .solution-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    list-style: none;
  }

  .solution-tags li {
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--border);
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.8125rem;
    color: var(--muted);
  }

  .solution-tags li::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
    margin-right: 0.375rem;
    vertical-align: middle;
  }

  /* ---------- News ---------- */
  .news {
    background: var(--surface-2);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }

  .news-list {
    display: flex;
    flex-direction: column;
    border-top: 1px solid var(--border);
  }

  .news-row {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem 1.25rem;
    border-bottom: 1px solid var(--border);
    transition: background 150ms ease;
  }

  .news-row:hover {
    background: rgba(255,255,255,0.02);
  }

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

  .news-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0.875rem;
    flex-shrink: 0;
  }

  .news-day {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    font-variant-numeric: tabular-nums;
  }

  .news-month {
    font-size: 0.75rem;
    color: var(--muted);
    margin-top: 2px;
  }

  .news-info {
    flex: 1;
    min-width: 0;
  }

  .news-title {
    font-size: 1.0625rem;
    font-weight: 600;
    color: #ffffff;
    transition: color 150ms ease;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .news-excerpt {
    color: var(--muted);
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .news-tag-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
  }

  .news-cat {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.75rem;
    color: var(--muted);
    background: rgba(255,255,255,0.06);
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    white-space: nowrap;
  }

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

  .news-arrow {
    color: var(--muted);
    transition: var(--transition);
  }

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

  .news-empty {
    border: 2px dashed rgba(255,255,255,0.2);
    border-radius: var(--radius);
    padding: 3rem;
    text-align: center;
    color: var(--muted);
    font-size: 0.9375rem;
  }

  .news-empty svg {
    margin: 0 auto 0.75rem;
    color: rgba(255,255,255,0.3);
  }

  .news-more {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--primary);
    font-size: 0.875rem;
    font-weight: 600;
  }

  .news-more:hover {
    gap: 0.625rem;
  }

  /* ---------- FAQ ---------- */
  .faq-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 3rem;
    align-items: start;
  }

  .faq-left .section-title {
    margin-bottom: 0.75rem;
  }

  .faq-left p {
    color: var(--muted);
    margin-bottom: 1.5rem;
  }

  .faq-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
  }

  .faq-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 1rem;
    overflow: hidden;
    transition: var(--transition);
  }

  .faq-item.open {
    border-color: rgba(200,255,62,0.4);
  }

  .faq-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.125rem 1.25rem;
    background: transparent;
    color: var(--text);
    font-size: 1rem;
    font-weight: 500;
    text-align: left;
    transition: color 150ms ease;
  }

  .faq-toggle:hover {
    color: var(--primary);
  }

  .faq-icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.5rem;
    background: rgba(255,255,255,0.05);
    transition: var(--transition);
    color: var(--muted);
  }

  .faq-item.open .faq-icon {
    background: var(--primary);
    color: var(--bg);
    transform: rotate(45deg);
  }

  .faq-panel {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .faq-panel-inner {
    padding: 0 1.25rem 1.25rem;
    color: var(--muted);
    font-size: 0.9375rem;
    line-height: 1.75;
    border-top: 1px solid var(--border);
    padding-top: 1rem;
  }

  /* ---------- CTA / Contact ---------- */
  .cta {
    background: var(--primary);
    color: #0A0F0D;
    padding: clamp(3rem, 8vh, 5rem) 0;
    position: relative;
    overflow: hidden;
  }

  .cta::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -60px;
    width: 240px;
    height: 240px;
    background: rgba(255,255,255,0.08);
    border-radius: 50%;
    pointer-events: none;
  }

  .cta .section-title {
    color: #0A0F0D;
  }

  .cta .section-desc {
    color: rgba(10,15,13,0.75);
  }

  .cta-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
  }

  .cta-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }

  .cta-info-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9375rem;
  }

  .cta-info-item svg {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    opacity: 0.7;
  }

  .contact-form {
    background: rgba(0,0,0,0.08);
    border-radius: var(--radius);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.875rem;
  }

  .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.875rem;
  }

  .contact-form input,
  .contact-form textarea {
    width: 100%;
    background: rgba(0,0,0,0.08);
    border: 1px solid rgba(0,0,0,0.2);
    border-radius: 0.625rem;
    padding: 0.75rem 1rem;
    font-size: 0.9375rem;
    color: #0A0F0D;
    transition: border 150ms ease, box-shadow 150ms ease;
  }

  .contact-form input::placeholder,
  .contact-form textarea::placeholder {
    color: rgba(10,15,13,0.5);
  }

  .contact-form input:focus,
  .contact-form textarea:focus {
    border-color: #000000;
    box-shadow: 0 0 0 3px rgba(0,0,0,0.15);
  }

  .contact-form textarea {
    min-height: 100px;
    resize: vertical;
  }

  .contact-form .btn-dark {
    align-self: flex-start;
  }

  /* ---------- Footer ---------- */
  .site-footer {
    background: #060A08;
    padding: 3.5rem 0 1.5rem;
    border-top: 1px solid var(--border);
    position: relative;
    z-index: 1;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
    gap: 2.5rem;
    margin-bottom: 2.5rem;
  }

  .footer-brand .brand-logo {
    margin-bottom: 0.75rem;
  }

  .footer-brand p {
    color: var(--muted);
    font-size: 0.875rem;
    max-width: 280px;
    margin-bottom: 1rem;
  }

  .footer-social {
    display: flex;
    gap: 0.625rem;
  }

  .footer-social a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--muted);
    transition: var(--transition);
  }

  .footer-social a:hover {
    color: var(--primary);
    border-color: rgba(200,255,62,0.3);
    background: rgba(200,255,62,0.06);
  }

  .footer-col h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 1rem;
  }

  .footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
  }

  .footer-col a {
    color: var(--muted);
    font-size: 0.875rem;
  }

  .footer-col a:hover {
    color: var(--primary);
  }

  .footer-contact {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    color: var(--muted);
    font-size: 0.875rem;
  }

  .footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding-top: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    color: rgba(255,255,255,0.4);
    font-size: 0.8125rem;
  }

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

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

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

    .nav-toggle {
      display: flex;
    }

    .mobile-nav {
      display: flex;
    }

    .header-cta {
      display: none;
    }

    .solutions-grid {
      grid-template-columns: 1fr;
      gap: 2rem;
    }

    .solutions-left {
      position: static;
    }

    .faq-grid {
      grid-template-columns: 1fr;
      gap: 2rem;
    }

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

  @media (max-width: 768px) {
    .stats-grid {
      grid-template-columns: 1fr 1fr;
    }

    .stat-item:nth-child(2)::after {
      display: none;
    }

    .stat-item:nth-child(odd)::after {
      content: unset;
    }

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

    .case-card.right {
      margin-top: 0;
    }

    .case-card.left,
    .case-card.right {
      aspect-ratio: 4 / 3;
    }

    .cta-grid {
      grid-template-columns: 1fr;
      gap: 2rem;
    }

    .service-row {
      flex-wrap: wrap;
      gap: 1rem;
    }

    .service-num {
      width: auto;
      font-size: 1.5rem;
    }

    .service-arrow {
      margin-left: auto;
    }

    .news-row {
      flex-wrap: wrap;
      gap: 0.75rem;
    }

    .news-date {
      width: 56px;
      height: 56px;
    }

    .news-tag-group {
      width: 100%;
      justify-content: flex-end;
    }
  }

  @media (max-width: 640px) {
    .header-inner {
      height: 64px;
    }

    .mobile-nav {
      top: 64px;
    }

    .brand-logo {
      font-size: 1.25rem;
    }

    .hero {
      min-height: 70vh;
      padding-top: 5rem;
    }

    .hero-actions {
      flex-direction: column;
      width: 100%;
    }

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

    .form-row {
      grid-template-columns: 1fr;
    }

    .footer-grid {
      grid-template-columns: 1fr;
      gap: 2rem;
    }

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

    .stat-item {
      padding: 1.25rem 0.75rem;
    }

    .section-head {
      flex-direction: column;
      align-items: flex-start;
    }

    .service-body h3 {
      font-size: 1.125rem;
    }

    .solution-card {
      padding: 1.5rem;
    }

    .news-title {
      white-space: normal;
      -webkit-line-clamp: 2;
      display: -webkit-box;
      -webkit-box-orient: vertical;
    }
  }

  @media (max-width: 480px) {
    .stats-grid {
      grid-template-columns: 1fr;
    }

    .stat-item::after {
      display: none !important;
    }

    .contact-form {
      padding: 1.25rem;
    }

    .btn {
      width: 100%;
      justify-content: center;
    }

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

/* roulang page: article */
:root {
            --bg: #0A0F0D;
            --surface: #111815;
            --surface-2: #16201B;
            --primary: #C8FF3E;
            --accent: #FF4D6A;
            --text: #F0F5EF;
            --muted: #98A69C;
            --border: rgba(255, 255, 255, 0.09);
            --radius: 16px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            background-color: var(--bg);
            background-image: radial-gradient(circle at 75% 10%, rgba(200, 255, 62, 0.04) 0%, transparent 50%), radial-gradient(circle at 20% 80%, rgba(255, 77, 106, 0.03) 0%, transparent 40%);
            color: var(--text);
            line-height: 1.75;
            font-weight: 400;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 150ms ease, border-color 150ms ease, background 150ms ease;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-inline: 1rem;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            font-size: 0.9375rem;
            font-weight: 700;
            padding: 0.75rem 1.75rem;
            border-radius: 0.75rem;
            transition: transform 200ms ease, box-shadow 200ms ease, filter 200ms ease;
            min-height: 48px;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #0A0F0D;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            filter: brightness(1.08);
            box-shadow: 0 8px 24px rgba(200, 255, 62, 0.25);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-ghost {
            background: transparent;
            color: var(--primary);
            border: 1px solid rgba(200, 255, 62, 0.5);
        }
        .btn-ghost:hover {
            background: rgba(200, 255, 62, 0.12);
            transform: translateY(-2px);
        }
        .btn-dark {
            background: #0A0F0D;
            color: #fff;
        }
        .btn-dark:hover {
            background: #1C241F;
            transform: translateY(-2px);
        }
        .tag-pill {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            font-size: 0.75rem;
            font-weight: 500;
            color: var(--text);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border);
            padding: 0.325rem 0.875rem;
            border-radius: 999px;
        }
        .tag-pill::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
            flex-shrink: 0;
        }
        .tag-pill--pink::before {
            background: var(--accent);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 15, 13, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
        }
        .header-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 1rem;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1;
            flex-shrink: 0;
        }
        .logo-j9 {
            color: var(--primary);
            font-weight: 900;
        }
        .logo-text {
            color: #fff;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            min-height: 48px;
            padding: 0.5rem 1rem;
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--muted);
            transition: color 150ms ease;
            white-space: nowrap;
        }
        .nav-link::after {
            content: "";
            position: absolute;
            left: 1rem;
            right: 1rem;
            bottom: 0;
            height: 2px;
            background: var(--primary);
            transform: scaleX(0);
            transform-origin: center;
            transition: transform 200ms ease;
        }
        .nav-link:hover,
        .nav-link.active {
            color: var(--primary);
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-cta {
            flex-shrink: 0;
        }
        .header-cta-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 48px;
            padding: 0.625rem 1.375rem;
            background: var(--primary);
            color: #0A0F0D;
            border-radius: 10px;
            font-weight: 700;
            font-size: 0.9375rem;
            transition: transform 200ms ease, filter 200ms ease, box-shadow 200ms ease;
        }
        .header-cta-btn:hover {
            transform: translateY(-2px);
            filter: brightness(1.08);
            box-shadow: 0 6px 20px rgba(200, 255, 62, 0.25);
        }
        .menu-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 48px;
            height: 48px;
            border-radius: 10px;
            gap: 5px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
        }
        .menu-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: transform 200ms ease, opacity 200ms ease;
        }
        .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 {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--surface);
            z-index: 99;
            padding: 1.5rem 1rem 2rem;
            flex-direction: column;
            overflow-y: auto;
            border-top: 1px solid var(--border);
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu .nav-link {
            display: flex;
            min-height: 52px;
            font-size: 1.0625rem;
            padding: 0.875rem 0.5rem;
            border-bottom: 1px solid var(--border);
            width: 100%;
        }
        .mobile-menu .nav-link::after {
            display: none;
        }
        .mobile-menu .nav-link.active {
            color: var(--primary);
            padding-left: 1rem;
            border-left: 3px solid var(--primary);
        }
        .mobile-menu .mobile-cta {
            margin-top: 1.5rem;
            width: 100%;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
            font-size: 0.8125rem;
            color: var(--muted);
            padding: 1.25rem 0 0;
        }
        .breadcrumb a {
            color: var(--muted);
            transition: color 150ms ease;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            opacity: 0.5;
            font-size: 0.75rem;
        }
        .breadcrumb .current {
            color: var(--text);
            font-weight: 500;
            max-width: 260px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .article-page {
            padding-bottom: 4rem;
        }
        .article-header {
            max-width: 960px;
            margin: 0 auto;
            padding: 3rem 1rem 2.5rem;
            text-align: center;
        }
        .article-header h1 {
            font-size: clamp(1.75rem, 4vw, 2.75rem);
            line-height: 1.2;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text);
            margin-bottom: 1.25rem;
        }
        .article-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            gap: 1rem;
            font-size: 0.8125rem;
            color: var(--muted);
            margin-bottom: 1.5rem;
        }
        .article-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
        }
        .article-meta .meta-dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--border);
        }
        .article-excerpt {
            max-width: 720px;
            margin: 0 auto;
            font-size: 1rem;
            color: var(--muted);
            line-height: 1.7;
            padding: 0 1rem;
        }
        .article-content-wrap {
            max-width: 760px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        .article-content {
            font-size: 1.0625rem;
            line-height: 1.85;
            color: var(--text);
        }
        .article-content>p {
            margin-bottom: 1.25em;
        }
        .article-content h2 {
            font-size: clamp(1.35rem, 2.5vw, 1.75rem);
            line-height: 1.3;
            font-weight: 700;
            margin: 2.25rem 0 0.875rem;
            padding-left: 0.875rem;
            border-left: 3px solid var(--primary);
        }
        .article-content h3 {
            font-size: 1.25rem;
            line-height: 1.3;
            font-weight: 600;
            margin: 1.75rem 0 0.75rem;
        }
        .article-content blockquote {
            margin: 1.75rem 0;
            padding: 1.125rem 1.5rem;
            background: var(--surface);
            border-left: 3px solid var(--primary);
            border-radius: 0 0.75rem 0.75rem 0;
            color: var(--muted);
            font-style: normal;
        }
        .article-content blockquote p {
            margin-bottom: 0.25rem;
        }
        .article-content ul,
        .article-content ol {
            margin: 1rem 0 1.25rem;
            padding-left: 1.5rem;
        }
        .article-content ul li,
        .article-content ol li {
            margin-bottom: 0.5rem;
        }
        .article-content ul li::marker {
            color: var(--primary);
        }
        .article-content img {
            border-radius: 1rem;
            margin: 1.5rem 0;
        }
        .article-content .wp-block-quote {
            margin: 1.75rem 0;
            padding: 1.125rem 1.5rem;
            background: var(--surface);
            border-left: 3px solid var(--primary);
            border-radius: 0 0.75rem 0.75rem 0;
        }
        .article-content code {
            background: rgba(200, 255, 62, 0.08);
            color: var(--primary);
            padding: 0.125rem 0.375rem;
            border-radius: 4px;
            font-size: 0.875em;
        }
        .article-content pre {
            background: #0D1410;
            border: 1px solid var(--border);
            border-radius: 1rem;
            padding: 1.25rem;
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        .article-content pre code {
            background: none;
            color: var(--text);
            padding: 0;
            font-size: 0.875rem;
        }

        .article-footer-section {
            max-width: 760px;
            margin: 2.5rem auto 0;
            padding: 0 1rem;
        }
        .tags-row {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.625rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid var(--border);
        }
        .tags-label {
            font-size: 0.8125rem;
            color: var(--muted);
            margin-right: 0.25rem;
        }

        .return-row {
            display: flex;
            justify-content: center;
            margin-top: 2.5rem;
        }

        .related-section {
            max-width: 1120px;
            margin: 4rem auto 0;
            padding: 0 1rem;
        }
        .related-title-wrap {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 1rem;
            margin-bottom: 1.5rem;
        }
        .related-title-wrap .sec-label {
            font-size: 0.75rem;
            letter-spacing: 0.15em;
            text-transform: uppercase;
            color: var(--primary);
            font-weight: 700;
            margin-bottom: 0.375rem;
        }
        .related-title-wrap h2 {
            font-size: clamp(1.5rem, 2.5vw, 2rem);
            font-weight: 700;
            line-height: 1.2;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .related-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 1rem;
            overflow: hidden;
            transition: transform 300ms ease, border-color 300ms ease, box-shadow 300ms ease;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-4px);
            border-color: rgba(200, 255, 62, 0.4);
            box-shadow: 0 0 0 1px rgba(200, 255, 62, 0.15), 0 12px 32px rgba(0, 0, 0, 0.5);
        }
        .related-card .cover {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--surface-2);
        }
        .related-card .cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 300ms ease;
        }
        .related-card:hover .cover img {
            transform: scale(1.05);
        }
        .related-card .card-body {
            padding: 1.125rem 1.25rem 1.375rem;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .related-card .card-title {
            font-size: 1rem;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text);
        }
        .related-card .card-time {
            font-size: 0.75rem;
            color: var(--muted);
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
        }

        .empty-state {
            max-width: 760px;
            margin: 3rem auto;
            padding: 4rem 2rem;
            text-align: center;
            border: 2px dashed rgba(255, 255, 255, 0.2);
            border-radius: 1rem;
            background: rgba(255, 255, 255, 0.01);
        }
        .empty-state svg {
            width: 48px;
            height: 48px;
            color: var(--muted);
            margin: 0 auto 1rem;
            opacity: 0.6;
        }
        .empty-state p {
            font-size: 1rem;
            color: var(--muted);
            margin-bottom: 1.25rem;
        }

        .cta-section {
            max-width: 1200px;
            margin: 5rem auto 0;
            padding: 0 1rem;
        }
        .cta-box {
            background: var(--primary);
            border-radius: 1.25rem;
            padding: clamp(2.5rem, 6vw, 4.5rem);
            text-align: center;
            color: #0A0F0D;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(0, 0, 0, 0.06);
            pointer-events: none;
        }
        .cta-box h2 {
            font-size: clamp(1.75rem, 3.5vw, 2.5rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 0.75rem;
            position: relative;
            z-index: 1;
        }
        .cta-box p {
            font-size: 1rem;
            color: rgba(0, 0, 0, 0.65);
            max-width: 560px;
            margin: 0 auto 1.5rem;
            position: relative;
            z-index: 1;
        }
        .cta-box .btn-dark {
            background: #0A0F0D;
            color: #fff;
            position: relative;
            z-index: 1;
        }
        .cta-box .btn-dark:hover {
            background: #1C241F;
        }

        .site-footer {
            background: #060A08;
            border-top: 1px solid var(--border);
            margin-top: 5rem;
            padding-top: 4rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 2.5rem;
            padding-bottom: 3rem;
        }
        .footer-brand p {
            font-size: 0.875rem;
            color: var(--muted);
            margin: 1rem 0 1.25rem;
            max-width: 320px;
            line-height: 1.7;
        }
        .footer-social {
            display: flex;
            gap: 0.75rem;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            color: var(--muted);
            transition: color 150ms ease, border-color 150ms ease, transform 150ms ease;
        }
        .footer-social a:hover {
            color: var(--primary);
            border-color: rgba(200, 255, 62, 0.4);
            transform: translateY(-2px);
        }
        .footer-col h4 {
            font-size: 0.9375rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 1rem;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 0.625rem;
        }
        .footer-col ul a {
            font-size: 0.875rem;
            color: var(--muted);
            transition: color 150ms ease, padding-left 150ms ease;
        }
        .footer-col ul a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 0.625rem;
            font-size: 0.875rem;
            color: var(--muted);
            line-height: 1.6;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.75rem;
            padding: 1.5rem 0 2rem;
            border-top: 1px solid var(--border);
            font-size: 0.8125rem;
            color: var(--muted);
        }
        .footer-bottom-links {
            display: flex;
            gap: 1.25rem;
        }
        .footer-bottom-links a {
            color: var(--muted);
            transition: color 150ms ease;
        }
        .footer-bottom-links a:hover {
            color: var(--primary);
        }

        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-up {
            animation: fadeUp 0.6s ease both;
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .header-wrap {
                height: 64px;
            }
            .mobile-menu {
                top: 64px;
            }
            .brand-logo {
                font-size: 1.25rem;
            }
            .article-header {
                padding: 2rem 1rem 1.75rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.75rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-box {
                padding: 2rem 1.25rem;
                border-radius: 1rem;
            }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
    :root {
      --bg: #0A0F0D;
      --surface: #111815;
      --surface-2: #16201B;
      --primary: #C8FF3E;
      --accent: #FF4D6A;
      --text: #F0F5EF;
      --muted: #98A69C;
      --border: rgba(255, 255, 255, 0.09);
      --radius: 16px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
      background: var(--bg);
      color: var(--text);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      background-image: radial-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px);
      background-size: 24px 24px;
      overflow-x: hidden;
    }

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

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

    button,
    input,
    textarea {
      font-family: inherit;
      font-size: inherit;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 1rem;
    }

    /* ===== 导航 ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(10, 15, 13, 0.88);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
      gap: 2rem;
    }

    .brand-logo {
      display: inline-flex;
      align-items: center;
      gap: 2px;
      font-weight: 800;
      font-size: 1.5rem;
      letter-spacing: -0.02em;
      line-height: 1;
    }

    .logo-j9 {
      color: var(--primary);
    }

    .logo-text {
      color: var(--text);
    }

    .main-nav {
      display: flex;
      align-items: center;
      gap: 2rem;
    }

    .nav-link {
      position: relative;
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--muted);
      padding: 0.5rem 0.25rem;
      transition: color 150ms ease;
      background: none;
      border: none;
      cursor: pointer;
    }

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary);
      transform: scaleX(0);
      transform-origin: left;
      transition: transform 150ms ease;
    }

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

    .nav-link:hover::after {
      transform: scaleX(1);
    }

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

    .nav-link.active::after {
      transform: scaleX(1);
    }

    .header-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--primary);
      color: #0A0F0D;
      font-weight: 700;
      font-size: 0.9375rem;
      padding: 0.625rem 1.5rem;
      border-radius: 12px;
      transition: transform 150ms ease, filter 150ms ease, box-shadow 150ms ease;
      white-space: nowrap;
    }

    .header-cta:hover {
      transform: translateY(-2px);
      filter: brightness(1.1);
      box-shadow: 0 0 0 3px rgba(200, 255, 62, 0.2);
    }

    .header-cta:active {
      transform: scale(0.98);
    }

    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      color: var(--text);
      cursor: pointer;
      padding: 0.5rem;
      border-radius: 8px;
      transition: background 150ms ease;
    }

    .mobile-toggle:hover {
      background: rgba(255, 255, 255, 0.06);
    }

    /* 移动端菜单 */
    .mobile-menu {
      display: none;
      position: fixed;
      inset: 0;
      z-index: 200;
      background: var(--surface);
      padding: 1.5rem;
      flex-direction: column;
      gap: 0.5rem;
      overflow-y: auto;
    }

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

    .mobile-menu-top {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 1.5rem;
    }

    .mobile-close {
      background: none;
      border: none;
      color: var(--text);
      cursor: pointer;
      padding: 0.5rem;
      border-radius: 8px;
      transition: background 150ms ease;
    }

    .mobile-close:hover {
      background: rgba(255, 255, 255, 0.06);
    }

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

    .mobile-nav-links .nav-link {
      font-size: 1.25rem;
      padding: 0.875rem 0;
      border-bottom: 1px solid var(--border);
    }

    .mobile-menu .header-cta {
      margin-top: 2rem;
      width: 100%;
      text-align: center;
    }

    /* ===== 通用按钮 ===== */
    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      background: var(--primary);
      color: #0A0F0D;
      font-weight: 700;
      font-size: 0.9375rem;
      padding: 0.75rem 2rem;
      border-radius: 12px;
      border: none;
      cursor: pointer;
      transition: transform 150ms ease, filter 150ms ease, box-shadow 150ms ease;
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      filter: brightness(1.1);
      box-shadow: 0 0 0 3px rgba(200, 255, 62, 0.2);
    }

    .btn-primary:active {
      transform: scale(0.98);
    }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      background: transparent;
      color: var(--primary);
      font-weight: 600;
      font-size: 0.9375rem;
      padding: 0.75rem 2rem;
      border-radius: 12px;
      border: 1px solid var(--primary);
      cursor: pointer;
      transition: all 150ms ease;
    }

    .btn-outline:hover {
      background: rgba(200, 255, 62, 0.12);
      transform: translateY(-2px);
    }

    .btn-outline:active {
      transform: scale(0.98);
    }

    /* ===== 区块标题 ===== */
    .section-label {
      display: inline-flex;
      align-items: center;
      gap: 0.375rem;
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--primary);
      margin-bottom: 0.75rem;
    }

    .section-label::before {
      content: '';
      width: 8px;
      height: 8px;
      background: var(--primary);
      border-radius: 50%;
      flex-shrink: 0;
    }

    .section-title {
      font-size: clamp(1.5rem, 2.5vw, 2.1rem);
      font-weight: 700;
      line-height: 1.2;
      color: var(--text);
      margin-bottom: 1.5rem;
    }

    .section-desc {
      color: var(--muted);
      font-size: 0.9375rem;
      max-width: 640px;
      line-height: 1.75;
    }

    /* ===== 面包屑 ===== */
    .breadcrumb {
      display: inline-flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 0.5rem;
      font-size: 0.8125rem;
      color: var(--muted);
      background: rgba(10, 15, 13, 0.5);
      border: 1px solid rgba(255, 255, 255, 0.06);
      border-radius: 999px;
      padding: 0.375rem 1rem;
    }

    .breadcrumb a {
      color: var(--muted);
      transition: color 150ms ease;
    }

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

    .breadcrumb-sep {
      color: rgba(255, 255, 255, 0.2);
    }

    /* ===== 页头横幅 ===== */
    .page-banner {
      position: relative;
      min-height: 40vh;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      background:
        linear-gradient(180deg, rgba(10, 15, 13, 0.78) 0%, rgba(10, 15, 13, 0.96) 100%),
        url('/assets/images/backpic/back-1.png') center/cover no-repeat;
      padding: 5rem 1rem 4rem;
    }

    .page-banner h1 {
      font-size: clamp(2.25rem, 5vw, 3.5rem);
      font-weight: 800;
      line-height: 1.15;
      margin-bottom: 1rem;
      color: var(--text);
    }

    .page-banner h1 span {
      color: var(--primary);
    }

    .page-banner p {
      color: var(--muted);
      font-size: 1rem;
      max-width: 600px;
      margin: 0 auto 1.5rem;
      line-height: 1.75;
    }

    /* ===== 图文交错区块 ===== */
    .split-section {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 4rem;
      align-items: center;
      padding: clamp(3rem, 8vh, 5.5rem) 1rem;
      max-width: 1200px;
      margin: 0 auto;
    }

    .split-section.reverse .split-image {
      order: 2;
    }

    .split-image {
      position: relative;
      border-radius: 1rem;
      overflow: hidden;
      border: 1px solid var(--border);
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    }

    .split-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 300ms ease;
    }

    .split-image:hover img {
      transform: scale(1.05);
    }

    .split-content h3 {
      font-size: clamp(1.25rem, 2vw, 1.5rem);
      font-weight: 700;
      margin-bottom: 0.75rem;
      line-height: 1.3;
    }

    .split-content p {
      color: var(--muted);
      margin-bottom: 1.25rem;
      font-size: 0.9375rem;
      line-height: 1.75;
    }

    .feature-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.875rem;
      margin: 1.5rem 0;
    }

    .feature-list li {
      display: flex;
      align-items: flex-start;
      gap: 0.75rem;
      font-size: 0.9375rem;
      color: var(--text);
      line-height: 1.6;
    }

    .feature-list li svg {
      width: 20px;
      height: 20px;
      color: var(--primary);
      flex-shrink: 0;
      margin-top: 2px;
    }

    /* ===== 数据面板 ===== */
    .stats-section {
      background: var(--surface-2);
      padding: clamp(3rem, 8vh, 5.5rem) 1rem;
    }

    .stats-section .section-label {
      display: flex;
      justify-content: center;
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
      max-width: 1200px;
      margin: 0 auto;
    }

    .stat-item {
      text-align: center;
      padding: 2rem 1rem;
      position: relative;
    }

    .stat-item:not(:last-child)::after {
      content: '';
      position: absolute;
      right: 0;
      top: 15%;
      height: 70%;
      width: 1px;
      background: rgba(255, 255, 255, 0.08);
    }

    .stat-number {
      font-size: clamp(2rem, 4vw, 3rem);
      font-weight: 800;
      color: var(--primary);
      font-variant-numeric: tabular-nums;
      line-height: 1.2;
    }

    .stat-label {
      color: var(--muted);
      font-size: 0.875rem;
      margin-top: 0.5rem;
    }

    /* ===== FAQ ===== */
    .faq-section {
      padding: clamp(3rem, 8vh, 5.5rem) 1rem;
      max-width: 1200px;
      margin: 0 auto;
    }

    .faq-grid {
      display: grid;
      grid-template-columns: 380px 1fr;
      gap: 4rem;
      align-items: start;
    }

    .faq-left {
      position: sticky;
      top: 100px;
    }

    .accordion {
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }

    .accordion-item {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 1rem;
      overflow: hidden;
      transition: border-color 150ms ease, box-shadow 150ms ease;
    }

    .accordion-item.open {
      border-color: var(--primary);
      box-shadow: 0 0 0 1px rgba(200, 255, 62, 0.1);
    }

    .accordion-btn {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      padding: 1.25rem 1.5rem;
      background: none;
      border: none;
      color: var(--text);
      font-size: 1rem;
      font-weight: 600;
      cursor: pointer;
      text-align: left;
      transition: color 150ms ease;
    }

    .accordion-btn:hover {
      color: var(--primary);
    }

    .accordion-icon {
      color: var(--primary);
      font-size: 1.25rem;
      flex-shrink: 0;
      line-height: 1;
      transition: transform 300ms ease;
    }

    .accordion-item.open .accordion-icon {
      transform: rotate(45deg);
    }

    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 300ms ease;
    }

    .accordion-content-inner {
      padding: 0 1.5rem 1.5rem;
      color: var(--muted);
      font-size: 0.9375rem;
      line-height: 1.75;
    }

    /* ===== CTA 区块 ===== */
    .cta-section {
      background: var(--primary);
      color: #0A0F0D;
      padding: clamp(3rem, 8vh, 5rem) 1rem;
    }

    .cta-inner {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 4rem;
      align-items: center;
      max-width: 1200px;
      margin: 0 auto;
    }

    .cta-info h2 {
      font-size: clamp(1.5rem, 3vw, 2.25rem);
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 1rem;
    }

    .cta-info p {
      color: rgba(10, 15, 13, 0.7);
      font-size: 0.9375rem;
      margin-bottom: 1.5rem;
      max-width: 420px;
    }

    .cta-contact-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.5rem;
      font-size: 0.9375rem;
      font-weight: 500;
    }

    .cta-form {
      background: var(--surface);
      border-radius: 1rem;
      padding: 2rem;
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    }

    .cta-form h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 1.5rem;
      color: var(--text);
    }

    .cta-form input,
    .cta-form textarea {
      width: 100%;
      height: 48px;
      background: rgba(0, 0, 0, 0.08);
      border: 1px solid rgba(0, 0, 0, 0.2);
      border-radius: 10px;
      padding: 0 1rem;
      font-size: 0.9375rem;
      color: var(--text);
      margin-bottom: 1rem;
      transition: border-color 150ms ease, box-shadow 150ms ease;
    }

    .cta-form input::placeholder,
    .cta-form textarea::placeholder {
      color: rgba(152, 166, 156, 0.8);
    }

    .cta-form textarea {
      height: 96px;
      padding: 0.75rem 1rem;
      resize: vertical;
    }

    .cta-form input:focus,
    .cta-form textarea:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(200, 255, 62, 0.2);
    }

    .cta-form .btn-primary {
      width: 100%;
      background: #0A0F0D;
      color: var(--text);
    }

    .cta-form .btn-primary:hover {
      filter: brightness(0.9);
      box-shadow: 0 0 0 3px rgba(10, 15, 13, 0.3);
    }

    /* ===== 关联推荐 ===== */
    .recommend-section {
      padding: clamp(3rem, 8vh, 5.5rem) 1rem;
      max-width: 1200px;
      margin: 0 auto;
    }

    .recommend-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
    }

    .recommend-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 1rem;
      overflow: hidden;
      transition: all 300ms ease;
      display: flex;
      flex-direction: column;
    }

    .recommend-card:hover {
      transform: translateY(-4px);
      border-color: var(--primary);
      box-shadow: 0 0 0 1px rgba(200, 255, 62, 0.15), 0 12px 32px rgba(0, 0, 0, 0.5);
    }

    .recommend-card .card-img {
      overflow: hidden;
      height: 200px;
    }

    .recommend-card .card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 300ms ease;
    }

    .recommend-card:hover .card-img img {
      transform: scale(1.05);
    }

    .recommend-content {
      padding: 1.5rem;
      display: flex;
      flex-direction: column;
      flex: 1;
    }

    .recommend-content h4 {
      font-size: 1.0625rem;
      font-weight: 600;
      margin-bottom: 0.5rem;
      line-height: 1.3;
    }

    .recommend-content p {
      color: var(--muted);
      font-size: 0.875rem;
      line-height: 1.6;
      flex: 1;
    }

    .recommend-link {
      display: inline-flex;
      align-items: center;
      gap: 0.375rem;
      color: var(--primary);
      font-size: 0.875rem;
      font-weight: 600;
      margin-top: 1rem;
      transition: gap 150ms ease;
    }

    .recommend-link:hover {
      gap: 0.625rem;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: #060A08;
      border-top: 1px solid var(--border);
      padding: 4rem 1rem 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.2fr;
      gap: 3rem;
      padding-bottom: 3rem;
      max-width: 1200px;
      margin: 0 auto;
    }

    .footer-brand p {
      color: var(--muted);
      font-size: 0.875rem;
      margin: 1rem 0 1.5rem;
      max-width: 280px;
      line-height: 1.7;
    }

    .footer-social {
      display: flex;
      gap: 0.75rem;
    }

    .footer-social a {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 36px;
      height: 36px;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 10px;
      color: var(--muted);
      transition: all 150ms ease;
    }

    .footer-social a:hover {
      color: var(--primary);
      border-color: var(--primary);
      transform: translateY(-2px);
    }

    .footer-col h4 {
      font-size: 0.9375rem;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 1rem;
    }

    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.625rem;
    }

    .footer-col ul li a {
      color: var(--muted);
      font-size: 0.875rem;
      transition: color 150ms ease;
    }

    .footer-col ul li a:hover {
      color: var(--primary);
    }

    .footer-contact {
      display: flex;
      flex-direction: column;
      gap: 0.625rem;
      color: var(--muted);
      font-size: 0.875rem;
      line-height: 1.6;
    }

    .footer-bottom {
      border-top: 1px solid var(--border);
      padding: 1.5rem 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 1rem;
      color: var(--muted);
      font-size: 0.8125rem;
      max-width: 1200px;
      margin: 0 auto;
    }

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

    .footer-bottom-links a {
      color: var(--muted);
      transition: color 150ms ease;
    }

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

    /* ===== 焦点可见性 ===== */
    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    textarea:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 2px;
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
      .main-nav {
        display: none;
      }
      .header-cta {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      .split-section {
        gap: 2rem;
      }
      .faq-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
      }
      .faq-left {
        position: static;
      }
      .cta-inner {
        grid-template-columns: 1fr;
        gap: 2rem;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
      }
    }

    @media (max-width: 768px) {
      .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem;
      }
      .stat-item:nth-child(2)::after {
        display: none;
      }
      .split-section {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 2.5rem 1rem;
      }
      .split-section.reverse .split-image {
        order: 0;
      }
      .recommend-grid {
        grid-template-columns: 1fr;
      }
      .page-banner {
        min-height: 35vh;
        padding: 4rem 1rem 3rem;
      }
    }

    @media (max-width: 520px) {
      .header-inner {
        height: 60px;
      }
      .brand-logo {
        font-size: 1.25rem;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .stats-grid {
        grid-template-columns: 1fr;
      }
      .stat-item::after {
        display: none;
      }
      .cta-form {
        padding: 1.5rem;
      }
      .recommend-card .card-img {
        height: 180px;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
      .accordion-btn {
        padding: 1rem;
        font-size: 0.9375rem;
      }
      .accordion-content-inner {
        padding: 0 1rem 1rem;
      }
    }

/* roulang page: category2 */
:root {
  --bg: #0A0F0D;
  --surface: #111815;
  --surface-2: #16201B;
  --primary: #C8FF3E;
  --accent: #FF4D6A;
  --text: #F0F5EF;
  --muted: #98A69C;
  --border: rgba(255,255,255,0.09);
  --radius: 16px;
  --radius-sm: 12px;
  --shadow: 0 8px 24px rgba(0,0,0,0.3);
  --shadow-lg: 0 0 0 1px rgba(200,255,62,0.15), 0 12px 32px rgba(0,0,0,0.5);
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --header-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  background-image:
    radial-gradient(circle at 50% -20%, rgba(200,255,62,0.05) 0%, transparent 60%),
    linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 100% 100%, 32px 32px, 32px 32px;
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; }

.container {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: 1rem;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10,15,13,0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 1.5rem;
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  white-space: nowrap;
}
.logo-j9 { color: var(--primary); }
.logo-text { color: #fff; }
.main-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-link {
  position: relative;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.5rem 0;
  transition: color 150ms ease;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 150ms ease;
}
.nav-link:hover,
.nav-link.active {
  color: var(--primary);
}
.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  align-items: center;
  justify-content: center;
  transition: border-color 150ms ease;
}
.menu-toggle:hover { border-color: var(--primary); }
.nav-close {
  display: none;
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  align-items: center;
  justify-content: center;
  z-index: 10;
}
.nav-close:hover { border-color: var(--primary); color: var(--primary); }

/* ===== Button ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 0.75rem;
  font-weight: 700;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: all 150ms ease;
  min-height: 48px;
  white-space: nowrap;
}
.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(200,255,62,0.45);
}
.btn-primary {
  background: var(--primary);
  color: #0A0F0D;
}
.btn-primary:hover {
  background: #d6ff5e;
  transform: translateY(-2px);
}
.btn-primary:active { transform: scale(0.98); }
.btn-outline {
  background: transparent;
  border-color: var(--primary);
  color: var(--primary);
}
.btn-outline:hover {
  background: rgba(200,255,62,0.12);
  transform: translateY(-2px);
}
.btn-outline:active { transform: scale(0.98); }
.btn-sm {
  min-height: 40px;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

/* ===== Section ===== */
.section {
  padding: clamp(3rem, 8vh, 5.5rem) 0;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}
.section-tag::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
}
.section-title {
  font-size: clamp(1.5rem, 2.5vw, 2.1rem);
  font-weight: 700;
  line-height: 1.2;
  margin: 0.75em 0 0.5em;
}
.section-desc {
  color: var(--muted);
  max-width: 56ch;
  margin: 0;
}
.bg-surface { background: var(--surface); }
.bg-surface-2 { background: var(--surface-2); }

/* ===== Banner ===== */
.page-banner {
  position: relative;
  min-height: 40vh;
  padding: 5rem 0;
  display: flex;
  align-items: center;
  background:
    linear-gradient(180deg, rgba(10,15,13,0.78), rgba(10,15,13,0.96)),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.page-banner::after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -80px;
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, rgba(200,255,62,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.banner-content {
  position: relative;
  z-index: 1;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
}
.breadcrumb a { color: var(--muted); transition: color 150ms ease; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: rgba(255,255,255,0.25); }
.page-banner h1 {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin: 0 0 1rem;
}
.page-banner p {
  color: var(--muted);
  max-width: 60ch;
  font-size: 1.05rem;
  margin: 0;
}

/* ===== Split ===== */
.split-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}
@media (min-width: 1024px) {
  .split-grid {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
  }
}
.split-media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.split-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 300ms ease;
}
.split-media:hover img { transform: scale(1.05); }
.split-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(10,15,13,0.45));
  pointer-events: none;
}
.split-content p {
  color: var(--muted);
  margin: 0 0 1rem;
}
.feature-list {
  margin-top: 1.25rem;
  display: grid;
  gap: 0.75rem;
}
.feature-item {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  font-size: 0.95rem;
  line-height: 1.6;
}
.feature-item svg {
  flex-shrink: 0;
  margin-top: 0.25rem;
  color: var(--primary);
}

/* ===== Stats ===== */
.stats-band {
  background: var(--surface-2);
  border-block: 1px solid var(--border);
  padding: 3.5rem 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem 1rem;
}
@media (min-width: 768px) {
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
}
.stat-item { text-align: center; padding: 0.5rem 1rem; }
.stat-number {
  font-size: clamp(2rem, 3vw, 2.75rem);
  font-weight: 800;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}
.stat-label {
  color: var(--muted);
  font-size: 0.875rem;
  margin-top: 0.5rem;
}
@media (min-width: 768px) {
  .stat-item + .stat-item { border-left: 1px solid var(--border); }
}

/* ===== Pill ===== */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
  font-size: 0.75rem;
  color: var(--text);
  transition: border-color 150ms ease, background 150ms ease;
}
.pill::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
}
.pill:hover {
  border-color: var(--primary);
  background: rgba(200,255,62,0.08);
}
.resource-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.5rem;
}

/* ===== Process ===== */
.process-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 2.5rem;
}
@media (min-width: 640px) {
  .process-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .process-grid { grid-template-columns: repeat(4, 1fr); }
}
.process-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all 300ms ease;
}
.process-card:hover {
  transform: translateY(-4px);
  border-color: rgba(200,255,62,0.35);
  box-shadow: var(--shadow-lg);
}
.process-step {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.08em;
}
.process-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0.75rem 0 0.5rem;
}
.process-card p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0;
}

/* ===== FAQ ===== */
.faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}
@media (min-width: 1024px) {
  .faq-layout {
    grid-template-columns: 0.8fr 1.4fr;
    gap: 4rem;
  }
}
.faq-side .btn { margin-top: 1.5rem; }
.faq-list { display: grid; gap: 0.75rem; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color 150ms ease, background 150ms ease;
}
.faq-item.open {
  border-color: rgba(200,255,62,0.35);
  background: var(--surface);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1rem;
  font-weight: 600;
  padding: 1.1rem 1.25rem;
  text-align: left;
  min-height: 48px;
  transition: color 150ms ease;
}
.faq-question:hover { color: var(--primary); }
.faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  transition: transform 300ms ease, border-color 300ms ease;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  border-color: var(--primary);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 300ms ease;
  padding: 0 1.25rem;
  color: var(--muted);
  font-size: 0.925rem;
  line-height: 1.7;
  margin: 0;
}
.faq-item.open .faq-answer {
  padding-bottom: 1.25rem;
}

/* ===== Cards ===== */
.cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 2.5rem;
}
@media (min-width: 640px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .cards-grid { grid-template-columns: repeat(3, 1fr); }
}
.rec-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 300ms ease;
  display: flex;
  flex-direction: column;
}
.rec-card:hover {
  transform: translateY(-4px);
  border-color: rgba(200,255,62,0.35);
  box-shadow: var(--shadow-lg);
}
.rec-media {
  aspect-ratio: 16/9;
  overflow: hidden;
}
.rec-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 300ms ease;
}
.rec-card:hover .rec-media img { transform: scale(1.05); }
.rec-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.rec-body h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  line-height: 1.4;
}
.rec-body p {
  color: var(--muted);
  font-size: 0.875rem;
  margin: 0;
  flex: 1;
}
.rec-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--muted);
}
.rec-arrow {
  color: var(--primary);
  transition: transform 150ms ease;
}
.rec-card:hover .rec-arrow { transform: translateX(4px); }

/* ===== CTA ===== */
.cta-block {
  background: var(--primary);
  color: #0A0F0D;
  padding: clamp(3rem, 6vh, 4.5rem) 0;
  position: relative;
  overflow: hidden;
}
.cta-block::before {
  content: "";
  position: absolute;
  right: 10%;
  top: -60%;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(0,0,0,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.cta-inner {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: flex-start;
}
@media (min-width: 768px) {
  .cta-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}
.cta-block h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  margin: 0 0 0.5rem;
  line-height: 1.2;
}
.cta-block p {
  font-size: 1.05rem;
  margin: 0;
  max-width: 48ch;
  color: rgba(10,15,13,0.75);
}
.cta-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.site-footer {
  background: #060A08;
  border-top: 1px solid var(--border);
  padding-top: 3.5rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
}
@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 1.6fr 1fr 1fr 1.2fr; }
}
.footer-brand p {
  color: var(--muted);
  font-size: 0.9rem;
  max-width: 32ch;
  margin: 1rem 0;
}
.footer-social {
  display: flex;
  gap: 0.75rem;
}
.footer-social a {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  transition: all 150ms ease;
}
.footer-social a:hover {
  color: var(--primary);
  border-color: var(--primary);
}
.footer-col h4 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 1rem;
  color: var(--text);
}
.footer-col ul { display: grid; gap: 0.5rem; }
.footer-col ul a {
  color: var(--muted);
  font-size: 0.9rem;
  transition: color 150ms ease;
}
.footer-col ul a:hover { color: var(--primary); }
.footer-contact {
  display: grid;
  gap: 0.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 1.25rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--muted);
}
@media (min-width: 768px) {
  .footer-bottom { flex-direction: row; }
}
.footer-bottom-links {
  display: flex;
  gap: 1.25rem;
}
.footer-bottom-links a {
  color: var(--muted);
  transition: color 150ms ease;
}
.footer-bottom-links a:hover { color: var(--primary); }

/* ===== Responsive Nav ===== */
@media (max-width: 1023px) {
  .menu-toggle { display: inline-flex; }
  .header-cta { display: none; }
  .main-nav {
    position: fixed;
    inset: 0;
    background: var(--surface);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 2rem;
    gap: 0.5rem;
    transform: translateX(100%);
    transition: transform 300ms ease;
    z-index: 200;
  }
  .main-nav.open { transform: translateX(0); }
  .nav-close { display: inline-flex; }
  .nav-link {
    font-size: 1.25rem;
    width: 100%;
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
  }
}
@media (min-width: 1024px) {
  .menu-toggle { display: none; }
  .nav-close { display: none; }
}
@media (max-width: 520px) {
  .brand-logo { font-size: 1.2rem; }
  .footer-bottom { text-align: center; }
  .cta-actions .btn { width: 100%; }
}