/* roulang page: index */
:root {
      --primary: #1E4E45;
      --primary-dark: #14352E;
      --primary-light: #2E6B5B;
      --accent: #C8955A;
      --accent-hover: #AA7C46;
      --accent-soft: #F0E3CE;
      --bg: #F8F5EF;
      --surface: #FFFFFF;
      --text-main: #22332D;
      --text-muted: #6B7B74;
      --border: #E6DFD3;
      --success: #3D8B62;
      --danger: #C0392B;
      --radius-lg: 16px;
      --radius-sm: 10px;
      --shadow-card: 0 2px 12px rgba(30, 78, 69, 0.06);
      --shadow-hover: 0 10px 28px rgba(30, 78, 69, 0.12);
      --shadow-cta: 0 4px 12px rgba(200, 149, 90, 0.30);
      --font-title: "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
      --font-body: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-body);
      background: var(--bg);
      color: var(--text-main);
      line-height: 1.75;
      font-size: 16px;
      padding-top: 78px;
      overflow-x: hidden;
    }

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

    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
    }

    ul,
    ol {
      list-style: none;
    }

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

    .container {
      max-width: 1200px;
      padding-left: 24px;
      padding-right: 24px;
    }

    .section {
      padding: 88px 0;
    }

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

    .section-head--split {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      max-width: 100%;
      flex-wrap: wrap;
      gap: 16px;
    }

    .section-head h2 {
      font-family: var(--font-title);
      font-size: 32px;
      font-weight: 700;
      line-height: 1.4;
      color: var(--primary-dark);
      margin-bottom: 12px;
    }

    .section-head p {
      color: var(--text-muted);
      font-size: 16px;
      margin-bottom: 0;
    }

    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.08em;
      color: var(--accent-hover);
      text-transform: uppercase;
      margin-bottom: 12px;
    }

    .section-tag::before {
      content: "";
      width: 24px;
      height: 2px;
      background: var(--accent);
      border-radius: 2px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-weight: 600;
      border-radius: 100rem;
      padding: 12px 30px;
      border: 1.5px solid transparent;
      transition: all 0.3s ease;
      white-space: nowrap;
      cursor: pointer;
      background: transparent;
      color: var(--text-main);
      line-height: 1.5;
    }

    .btn:focus-visible {
      outline: 3px solid rgba(200, 149, 90, 0.45);
      outline-offset: 3px;
    }

    .btn-accent {
      background: var(--accent);
      color: #fff;
      box-shadow: var(--shadow-cta);
      border-color: var(--accent);
    }

    .btn-accent:hover,
    .btn-accent:focus {
      background: var(--accent-hover);
      border-color: var(--accent-hover);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(200, 149, 90, 0.40);
    }

    .btn-accent:active {
      transform: translateY(0);
      box-shadow: var(--shadow-cta);
      filter: brightness(0.96);
    }

    .btn-ghost {
      background: transparent;
      color: #fff;
      border-color: rgba(255, 255, 255, 0.85);
    }

    .btn-ghost:hover,
    .btn-ghost:focus {
      background: rgba(255, 255, 255, 0.14);
      color: #fff;
      border-color: #fff;
      transform: translateY(-2px);
    }

    .btn-block {
      width: 100%;
    }

    .btn-nav-cta {
      background: var(--accent);
      color: #fff;
      border-color: var(--accent);
      padding: 10px 26px;
      font-size: 14px;
      box-shadow: var(--shadow-cta);
    }

    .btn-nav-cta:hover,
    .btn-nav-cta:focus {
      background: var(--accent-hover);
      border-color: var(--accent-hover);
      color: #fff;
      transform: translateY(-1px);
      box-shadow: 0 6px 20px rgba(200, 149, 90, 0.36);
    }

    .cta-text-short {
      display: none;
    }

    .link-more {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-weight: 600;
      font-size: 14px;
      color: var(--primary);
      transition: gap 0.3s ease, color 0.3s ease;
    }

    .link-more i {
      color: var(--accent);
      font-size: 12px;
      transition: transform 0.3s ease;
    }

    .link-more:hover {
      color: var(--accent-hover);
    }

    .link-more:hover i {
      transform: translateX(4px);
    }

    .badge-core {
      display: inline-flex;
      align-items: center;
      padding: 5px 14px;
      background: var(--accent-soft);
      color: var(--accent-hover);
      font-size: 12px;
      font-weight: 700;
      border-radius: 100rem;
      letter-spacing: 0.06em;
    }

    .form-feedback-success {
      color: var(--success);
      font-size: 13px;
    }

    .form-feedback-error {
      color: var(--danger);
      font-size: 13px;
    }

    /* ---------- Header / Nav ---------- */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1050;
      background: rgba(248, 245, 239, 0.92);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border);
      transition: box-shadow 0.3s ease, background 0.3s ease;
    }

    .site-header.scrolled {
      box-shadow: 0 6px 24px rgba(30, 78, 69, 0.08);
      background: rgba(255, 255, 255, 0.96);
    }

    .main-nav {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 78px;
      gap: 24px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .brand__name {
      font-family: var(--font-title);
      font-weight: 700;
      font-size: 20px;
      color: var(--primary);
      letter-spacing: 0.02em;
      line-height: 1.2;
    }

    .brand__sub {
      font-size: 12px;
      color: var(--text-muted);
      border-left: 1px solid var(--border);
      padding-left: 12px;
      line-height: 1.2;
      white-space: nowrap;
    }

    .nav-links-wrap {
      display: flex;
      align-items: center;
      gap: 28px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      margin: 0;
      padding: 0;
    }

    .nav-links a {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-main);
      position: relative;
      padding: 6px 2px;
    }

    .nav-links a::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: -2px;
      width: 0;
      height: 2px;
      background: var(--accent);
      border-radius: 2px;
      transition: width 0.3s ease;
    }

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

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

    .nav-links a.active {
      color: var(--primary);
      font-weight: 600;
    }

    .nav-toggle {
      display: none;
      flex-direction: column;
      justify-content: center;
      gap: 5px;
      width: 42px;
      height: 42px;
      background: var(--primary);
      border: none;
      border-radius: 10px;
      cursor: pointer;
      padding: 10px;
      z-index: 1060;
    }

    .nav-toggle span {
      display: block;
      height: 2px;
      width: 100%;
      background: #fff;
      border-radius: 2px;
      transition: transform 0.3s ease, opacity 0.3s ease;
    }

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

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

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

    /* ---------- Hero ---------- */
    .hero {
      position: relative;
      min-height: 660px;
      display: flex;
      align-items: center;
      padding: 120px 0 100px;
      background-color: var(--primary-dark);
      overflow: hidden;
    }

    .hero__bg {
      position: absolute;
      inset: 0;
      background-size: cover;
      background-position: center;
      opacity: 0.38;
    }

    .hero__overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(105deg, rgba(20, 53, 46, 0.96) 0%, rgba(30, 78, 69, 0.84) 55%, rgba(30, 78, 69, 0.55) 100%);
    }

    .hero__content {
      position: relative;
      z-index: 2;
      max-width: 820px;
      margin: 0;
    }

    .hero__eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--accent-soft);
      font-size: 14px;
      font-weight: 600;
      letter-spacing: 0.1em;
      margin-bottom: 22px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.15);
      padding: 8px 18px;
      border-radius: 100rem;
      backdrop-filter: blur(4px);
    }

    .hero h1 {
      font-family: var(--font-title);
      font-size: 42px;
      font-weight: 700;
      line-height: 1.35;
      color: #fff;
      margin-bottom: 20px;
      text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
    }

    .hero__lead {
      font-size: 17px;
      line-height: 1.7;
      color: rgba(255, 255, 255, 0.82);
      margin-bottom: 34px;
      max-width: 520px;
      font-weight: 400;
    }

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

    .hero__stats {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1px;
      background: rgba(255, 255, 255, 0.10);
      border: 1px solid rgba(255, 255, 255, 0.16);
      border-radius: 16px;
      backdrop-filter: blur(8px);
      margin-top: 56px;
      overflow: hidden;
    }

    .hero__stat {
      padding: 26px 20px;
      text-align: center;
      background: rgba(20, 53, 46, 0.72);
    }

    .hero__stat .stat-num {
      font-family: var(--font-title);
      font-size: 40px;
      font-weight: 800;
      color: var(--accent);
      font-variant-numeric: tabular-nums;
      line-height: 1.2;
    }

    .hero__stat .stat-suffix {
      font-size: 18px;
      font-weight: 700;
      color: var(--accent);
      margin-left: 2px;
    }

    .hero__stat .stat-label {
      display: block;
      margin-top: 6px;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.85);
      letter-spacing: 0.02em;
    }

    /* ---------- Metrics ---------- */
    .metrics {
      background: var(--bg);
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .metric-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      box-shadow: var(--shadow-card);
      transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .metric-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: linear-gradient(90deg, var(--accent), transparent);
      opacity: 0.6;
    }

    .metric-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary-light);
    }

    .metric-num {
      font-family: var(--font-title);
      font-size: 46px;
      font-weight: 800;
      color: var(--accent);
      line-height: 1.2;
      font-variant-numeric: tabular-nums;
    }

    .metric-num span {
      font-size: 22px;
      margin-left: 2px;
    }

    .metric-card h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--primary-dark);
      margin: 12px 0 8px;
      font-family: var(--font-title);
    }

    .metric-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 0;
    }

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

    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      grid-auto-rows: auto;
      gap: 24px;
    }

    .service-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
      position: relative;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary-light);
    }

    .service-card--feature {
      grid-column: 1 / span 2;
      grid-row: 1 / span 2;
      display: flex;
      flex-direction: row;
      align-items: stretch;
      background: var(--primary);
      border: none;
      color: #fff;
    }

    .service-card--feature .service-card__img {
      flex: 0 0 40%;
      background-size: cover;
      background-position: center;
      min-height: 260px;
    }

    .service-card--feature .service-card__body {
      padding: 36px;
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      justify-content: center;
    }

    .service-card--feature h3 {
      font-family: var(--font-title);
      font-size: 24px;
      font-weight: 700;
      color: #fff;
      margin: 14px 0 12px;
    }

    .service-card--feature p {
      color: rgba(255, 255, 255, 0.82);
      font-size: 15px;
      line-height: 1.7;
      margin-bottom: 20px;
    }

    .service-card--feature .link-more {
      color: #fff;
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.25);
      padding: 8px 18px;
      border-radius: 100rem;
      font-size: 13px;
    }

    .service-card--feature .link-more:hover {
      background: rgba(255, 255, 255, 0.18);
      color: var(--accent-soft);
    }

    .service-card--feature .service-card__icon {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: rgba(255, 255, 255, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      color: var(--accent);
    }

    .service-card--side {
      grid-column: 3;
    }

    .service-card--side:nth-child(2) {
      grid-row: 1;
    }

    .service-card--side:nth-child(3) {
      grid-row: 2;
    }

    .service-card--compact:nth-child(4) {
      grid-column: 1;
      grid-row: 3;
    }

    .service-card--compact:nth-child(5) {
      grid-column: 2;
      grid-row: 3;
    }

    .service-card--compact:nth-child(6) {
      grid-column: 3;
      grid-row: 3;
    }

    .service-card__body {
      padding: 28px;
    }

    .service-card__icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: var(--accent-soft);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      color: var(--accent-hover);
      margin-bottom: 16px;
      transition: background 0.3s ease, color 0.3s ease, transform 0.3s ease;
    }

    .service-card:hover .service-card__icon {
      background: var(--accent);
      color: #fff;
      transform: translateY(-2px);
    }

    .service-card h3 {
      font-family: var(--font-title);
      font-size: 18px;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 10px;
    }

    .service-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 14px;
    }

    .service-card .link-more {
      font-size: 13px;
    }

    /* ---------- Compare ---------- */
    .compare {
      background: #F1EBE1;
    }

    .compare-grid {
      display: grid;
      grid-template-columns: 1fr auto 1fr;
      gap: 28px;
      align-items: center;
    }

    .compare-card {
      background: var(--surface);
      border-radius: var(--radius-lg);
      padding: 36px 32px;
      box-shadow: var(--shadow-card);
      border: 1px solid var(--border);
    }

    .compare-card--before {
      opacity: 0.88;
    }

    .compare-card--after {
      border: 2px solid var(--primary-light);
      background: #FAFDFC;
    }

    .compare-card h3 {
      font-family: var(--font-title);
      font-size: 20px;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 24px;
      position: relative;
      padding-bottom: 14px;
    }

    .compare-card h3::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 36px;
      height: 3px;
      background: var(--accent);
      border-radius: 3px;
    }

    .compare-card ul {
      margin: 0;
      padding: 0;
    }

    .compare-card li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 15px;
      line-height: 1.7;
      padding: 9px 0;
      color: var(--text-main);
    }

    .compare-card--before li {
      color: var(--text-muted);
    }

    .compare-card li i {
      margin-top: 4px;
      font-size: 14px;
      flex-shrink: 0;
    }

    .compare-card--before li i {
      color: #B5B6B0;
    }

    .compare-card--after li i {
      color: var(--accent);
    }

    .compare-vs {
      width: 64px;
      height: 64px;
      flex-shrink: 0;
      border-radius: 50%;
      background: var(--accent);
      color: #fff;
      font-family: var(--font-title);
      font-weight: 800;
      font-size: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-cta);
      letter-spacing: 0.03em;
      position: relative;
      z-index: 2;
    }

    .compare-stats {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 48px;
      background: var(--primary-dark);
      border-radius: var(--radius-lg);
      padding: 32px 40px;
    }

    .compare-stats > div {
      text-align: center;
      border-right: 1px solid rgba(255, 255, 255, 0.12);
    }

    .compare-stats > div:last-child {
      border-right: none;
    }

    .compare-stat-num {
      font-family: var(--font-title);
      font-size: 38px;
      font-weight: 800;
      color: var(--accent);
      font-variant-numeric: tabular-nums;
      line-height: 1.2;
    }

    .compare-stats p {
      color: rgba(255, 255, 255, 0.82);
      font-size: 14px;
      margin-top: 8px;
      margin-bottom: 0;
    }

    /* ---------- News ---------- */
    .news {
      background: var(--bg);
    }

    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .news-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
      height: 100%;
    }

    .news-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary-light);
    }

    .news-card__link {
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .news-card__media {
      overflow: hidden;
      aspect-ratio: 16 / 9;
      background: #EAE5DB;
    }

    .news-card__media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

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

    .news-card__body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }

    .news-card__tag {
      align-self: flex-start;
      background: var(--accent-soft);
      color: var(--accent-hover);
      font-size: 12px;
      font-weight: 700;
      padding: 4px 14px;
      border-radius: 100rem;
      letter-spacing: 0.04em;
      margin-bottom: 12px;
    }

    .news-card__body h3 {
      font-family: var(--font-title);
      font-size: 17px;
      font-weight: 700;
      color: var(--primary-dark);
      line-height: 1.5;
      margin-bottom: 10px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .news-card__body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
      flex: 1;
    }

    .news-card__meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-top: 1px solid var(--border);
      padding-top: 14px;
      font-size: 13px;
      color: var(--text-muted);
    }

    .news-card__meta time {
      font-variant-numeric: tabular-nums;
    }

    .news-card__more {
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .news-card__more::after {
      content: "→";
      color: var(--accent);
      transition: transform 0.3s ease;
    }

    .news-card:hover .news-card__more::after {
      transform: translateX(3px);
    }

    .news-empty {
      grid-column: 1 / -1;
      border: 2px dashed var(--border);
      border-radius: var(--radius-lg);
      padding: 56px 20px;
      text-align: center;
      background: var(--surface);
      color: var(--text-muted);
    }

    .news-empty i {
      font-size: 32px;
      color: var(--accent);
      margin-bottom: 12px;
      display: block;
    }

    .news-empty p {
      margin-bottom: 0;
      font-size: 15px;
    }

    /* ---------- FAQ ---------- */
    .faq {
      background: var(--surface);
    }

    .faq-layout {
      display: grid;
      grid-template-columns: 0.85fr 1.4fr;
      gap: 48px;
      align-items: start;
    }

    .faq-head h2 {
      font-family: var(--font-title);
      font-size: 30px;
      font-weight: 700;
      color: var(--primary-dark);
      line-height: 1.4;
      margin-bottom: 16px;
    }

    .faq-head p {
      color: var(--text-muted);
      font-size: 15px;
      line-height: 1.7;
      max-width: 320px;
    }

    .accordion {
      --bs-accordion-border-width: 0;
      --bs-accordion-border-radius: 0;
      --bs-accordion-inner-border-radius: 0;
      --bs-accordion-bg: transparent;
    }

    .accordion-item {
      background: var(--surface);
      border: 1px solid var(--border) !important;
      border-radius: 12px !important;
      margin-bottom: 12px;
      overflow: hidden;
      transition: border-color 0.3s ease, box-shadow 0.3s ease;
    }

    .accordion-item:has(.accordion-button:not(.collapsed)) {
      border-color: var(--primary-light) !important;
      box-shadow: 0 4px 16px rgba(30, 78, 69, 0.08);
    }

    .accordion-button {
      background: var(--surface);
      color: var(--text-main);
      font-family: var(--font-body);
      font-size: 16px;
      font-weight: 600;
      padding: 18px 20px;
      box-shadow: none !important;
      transition: background 0.3s ease, color 0.3s ease;
    }

    .accordion-button:not(.collapsed) {
      background: #F6F4EF;
      color: var(--primary);
    }

    .accordion-button:hover,
    .accordion-button:focus {
      z-index: 0;
    }

    .accordion-button::after {
      display: none;
    }

    .faq-icon {
      flex-shrink: 0;
      width: 22px;
      height: 22px;
      border: 1.5px solid var(--accent);
      border-radius: 50%;
      position: relative;
      margin-right: 14px;
      display: inline-block;
      transition: background 0.3s ease, transform 0.3s ease;
      background: transparent;
    }

    .faq-icon::before,
    .faq-icon::after {
      content: "";
      position: absolute;
      background: var(--accent);
      border-radius: 2px;
      transition: transform 0.3s ease, opacity 0.3s ease;
      top: 50%;
      left: 50%;
    }

    .faq-icon::before {
      width: 10px;
      height: 2px;
      transform: translate(-50%, -50%);
    }

    .faq-icon::after {
      width: 2px;
      height: 10px;
      transform: translate(-50%, -50%);
    }

    .accordion-button:not(.collapsed) .faq-icon {
      background: var(--accent);
    }

    .accordion-button:not(.collapsed) .faq-icon::before,
    .accordion-button:not(.collapsed) .faq-icon::after {
      background: #fff;
    }

    .accordion-button:not(.collapsed) .faq-icon::after {
      transform: translate(-50%, -50%) rotate(90deg);
      opacity: 0;
    }

    .accordion-body {
      padding: 6px 20px 20px 56px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
      border-top: 1px solid var(--border);
      background: #FBFAF7;
    }

    /* ---------- Contact ---------- */
    .contact {
      background: var(--primary);
      position: relative;
      overflow: hidden;
    }

    .contact::before {
      content: "";
      position: absolute;
      top: -100px;
      right: -100px;
      width: 320px;
      height: 320px;
      background: radial-gradient(circle, rgba(200, 149, 90, 0.18) 0%, transparent 70%);
      pointer-events: none;
    }

    .contact-card {
      position: relative;
      background: var(--surface);
      border-radius: 20px;
      overflow: hidden;
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
      box-shadow: 0 16px 40px rgba(0, 0, 0, 0.14);
    }

    .contact-info {
      background: var(--primary-dark);
      color: #fff;
      padding: 48px 40px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .contact-info__tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.08em;
      color: var(--accent);
      margin-bottom: 16px;
    }

    .contact-info__tag::before {
      content: "";
      width: 24px;
      height: 2px;
      background: var(--accent);
      border-radius: 2px;
    }

    .contact-info h2 {
      font-family: var(--font-title);
      font-size: 28px;
      font-weight: 700;
      color: #fff;
      line-height: 1.5;
      margin-bottom: 16px;
    }

    .contact-info > p {
      color: rgba(255, 255, 255, 0.78);
      font-size: 15px;
      line-height: 1.7;
      margin-bottom: 28px;
    }

    .contact-info ul {
      margin: 0;
      padding: 0;
    }

    .contact-info li {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 14px;
      color: rgba(255, 255, 255, 0.88);
      padding: 8px 0;
    }

    .contact-info li i {
      width: 34px;
      height: 34px;
      border-radius: 50%;
      background: rgba(200, 149, 90, 0.2);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      flex-shrink: 0;
    }

    .contact-form {
      padding: 48px 44px;
      background: var(--surface);
    }

    .contact-form .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .contact-form .form-group {
      margin-bottom: 20px;
    }

    .contact-form label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .contact-form .form-control,
    .contact-form .form-select {
      width: 100%;
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 12px 16px;
      font-size: 14px;
      background: #fff;
      color: var(--text-main);
      transition: border-color 0.25s ease, box-shadow 0.25s ease;
      min-height: 48px;
    }

    .contact-form .form-control::placeholder {
      color: #A7AEA8;
    }

    .contact-form .form-control:focus,
    .contact-form .form-select:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 4px rgba(30, 78, 69, 0.12);
      outline: none;
      background: #fff;
    }

    .contact-form .form-select {
      appearance: none;
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='10' viewBox='0 0 14 10'%3E%3Cpath d='M1 1l6 6 6-6' stroke='%236B7B74' stroke-width='1.8' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: right 16px center;
      cursor: pointer;
    }

    .contact-form .form-tip {
      margin-top: 14px;
      font-size: 12px;
      color: var(--text-muted);
      line-height: 1.6;
      text-align: center;
    }

    /* ---------- Footer ---------- */
    .site-footer {
      background: var(--primary-dark);
      color: rgba(255, 255, 255, 0.78);
      padding: 64px 0 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.3fr;
      gap: 48px;
      padding-bottom: 44px;
    }

    .footer-brand__name {
      font-family: var(--font-title);
      font-size: 22px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 12px;
      letter-spacing: 0.02em;
    }

    .footer-brand__desc {
      font-size: 14px;
      line-height: 1.75;
      color: rgba(255, 255, 255, 0.65);
      max-width: 260px;
    }

    .footer-col h4 {
      font-size: 13px;
      font-weight: 700;
      color: #fff;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      margin-bottom: 20px;
      position: relative;
      padding-bottom: 10px;
    }

    .footer-col h4::before {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 28px;
      height: 2px;
      background: var(--accent);
      border-radius: 2px;
    }

    .footer-col ul {
      margin: 0;
      padding: 0;
    }

    .footer-col li {
      padding: 6px 0;
      font-size: 14px;
    }

    .footer-col a {
      color: rgba(255, 255, 255, 0.72);
      transition: color 0.25s ease, padding-left 0.25s ease;
    }

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

    .footer-contact li {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .footer-contact li i {
      color: var(--accent);
      width: 16px;
      text-align: center;
      font-size: 13px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding: 24px 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.55);
    }

    .footer-bottom p {
      margin-bottom: 0;
    }

    /* ---------- Responsive ---------- */
    @media (max-width: 1199.98px) {
      .hero {
        min-height: auto;
      }

      .hero__stats {
        grid-template-columns: repeat(4, 1fr);
      }

      .service-card--feature .service-card__img {
        flex-basis: 38%;
      }
    }

    @media (max-width: 991.98px) {
      .section {
        padding: 64px 0;
      }

      .metrics-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 16px;
      }

      .metric-card {
        padding: 24px 18px;
      }

      .metric-num {
        font-size: 36px;
      }

      .service-card--feature .service-card__img {
        flex-basis: 34%;
      }

      .service-card--feature .service-card__body {
        padding: 28px;
      }

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

      .compare-vs {
        margin: 0 auto;
      }

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

      .faq-head p {
        max-width: 100%;
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
      }
    }

    @media (max-width: 767.98px) {
      body {
        padding-top: 64px;
      }

      .main-nav {
        height: 64px;
      }

      .nav-toggle {
        display: flex;
      }

      .nav-links-wrap {
        position: fixed;
        top: 0;
        right: -100%;
        width: 82%;
        max-width: 380px;
        height: 100vh;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(16px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: stretch;
        gap: 0;
        padding: 96px 28px 32px;
        box-shadow: -8px 0 32px rgba(20, 53, 46, 0.18);
        transition: right 0.35s ease;
        z-index: 1050;
        overflow-y: auto;
      }

      .nav-links-wrap.open {
        right: 0;
      }

      .nav-links {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        margin-bottom: 24px;
      }

      .nav-links li {
        width: 100%;
      }

      .nav-links a {
        display: block;
        padding: 14px 4px;
        font-size: 16px;
        border-bottom: 1px solid var(--border);
      }

      .nav-links a::after {
        display: none;
      }

      .btn-nav-cta {
        justify-content: center;
        padding: 12px 20px;
        width: 100%;
      }

      .hero {
        padding: 88px 0 64px;
      }

      .hero h1 {
        font-size: 30px;
      }

      .hero__lead {
        font-size: 15px;
      }

      .hero__stats {
        grid-template-columns: repeat(4, 1fr);
        margin-top: 40px;
      }

      .hero__stat {
        padding: 18px 8px;
      }

      .hero__stat .stat-num {
        font-size: 28px;
      }

      .hero__stat .stat-suffix {
        font-size: 14px;
      }

      .hero__stat .stat-label {
        font-size: 12px;
      }

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

      .metric-num {
        font-size: 32px;
      }

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

      .service-card--feature {
        grid-column: auto;
        grid-row: auto;
        flex-direction: column;
      }

      .service-card--side,
      .service-card--compact {
        grid-column: auto !important;
        grid-row: auto !important;
      }

      .service-card--feature .service-card__img {
        flex: none;
        min-height: 200px;
        width: 100%;
      }

      .compare-stats {
        grid-template-columns: 1fr;
        gap: 28px;
        padding: 32px 24px;
      }

      .compare-stats > div {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        padding-bottom: 20px;
      }

      .compare-stats > div:last-child {
        border-bottom: none;
        padding-bottom: 0;
      }

      .news-grid {
        grid-template-columns: 1fr;
        gap: 20px;
      }

      .section-head h2 {
        font-size: 26px;
      }

      .contact-card {
        grid-template-columns: 1fr;
      }

      .contact-info,
      .contact-form {
        padding: 36px 28px;
      }

      .contact-form .form-row {
        grid-template-columns: 1fr;
        gap: 0;
      }

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

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

    @media (max-width: 575.98px) {
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }

      .section {
        padding: 52px 0;
      }

      .brand__sub {
        display: none;
      }

      .cta-text-full {
        display: none;
      }

      .cta-text-short {
        display: inline;
      }

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

      .hero__cta .btn {
        width: 100%;
      }

      .hero__stats {
        grid-template-columns: repeat(2, 1fr);
        border-radius: 14px;
      }

      .hero__stat {
        padding: 16px 10px;
      }

      .hero__stat .stat-num {
        font-size: 26px;
      }

      .metric-num {
        font-size: 28px;
      }

      .metric-card h3 {
        font-size: 16px;
      }

      .service-card--feature .service-card__body {
        padding: 24px;
      }

      .service-card--feature h3 {
        font-size: 20px;
      }

      .compare-card {
        padding: 28px 22px;
      }

      .faq-head h2 {
        font-size: 24px;
      }

      .accordion-body {
        padding: 6px 16px 16px 46px;
      }

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

    @media (min-width: 1400px) {
      .hero__content {
        max-width: 840px;
      }
    }

/* roulang page: category1 */
:root {
  --primary: #1E4E45;
  --primary-dark: #14352E;
  --primary-light: #2E6B5B;
  --accent: #C8955A;
  --accent-hover: #AA7C46;
  --accent-soft: #F0E3CE;
  --bg: #F8F5EF;
  --surface: #FFFFFF;
  --text-main: #22332D;
  --text-muted: #6B7B74;
  --border: #E6DFD3;
  --success: #3D8B62;
  --radius-lg: 16px;
  --radius-sm: 10px;
  --shadow-card: 0 2px 12px rgba(30,78,69,.06);
  --shadow-hover: 0 10px 28px rgba(30,78,69,.12);
  --shadow-pop: 0 8px 24px rgba(20,53,46,.16);
  --font-serif: "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
  --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-main);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color .25s ease, background-color .25s ease, box-shadow .25s ease, transform .25s ease;
}

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid rgba(200, 149, 90, .45);
  outline-offset: 2px;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-serif);
  color: var(--primary);
  margin-top: 0;
  line-height: 1.4;
}

p {
  margin-top: 0;
}

ul,
ol {
  padding-left: 1.25rem;
}

button {
  border: 0;
  cursor: pointer;
  font-family: inherit;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

@media (max-width: 767px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .3s ease;
}

.site-header.scrolled {
  box-shadow: 0 6px 20px rgba(20, 53, 46, .08);
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  gap: 24px;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  line-height: 1.25;
  flex-shrink: 0;
}

.brand__name {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: .01em;
}

.brand__sub {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: .12em;
  margin-top: 2px;
}

.nav-links-wrap {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-main);
  padding: 10px 2px;
  position: relative;
}

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

.nav-links a.active {
  color: var(--primary);
  font-weight: 600;
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 2px;
  height: 3px;
  border-radius: 3px;
  background: var(--accent);
}

.btn-nav-cta {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  padding: 10px 26px;
  border-radius: 100rem;
  box-shadow: 0 4px 12px rgba(200, 149, 90, .30);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  transition: all .25s ease;
}

.btn-nav-cta:hover {
  background: var(--accent-hover);
  color: #fff;
  box-shadow: 0 6px 20px rgba(200, 149, 90, .40);
  transform: translateY(-2px);
}

.btn-nav-cta:active {
  transform: translateY(0) scale(.98);
  box-shadow: 0 2px 8px rgba(200, 149, 90, .30);
}

.cta-text-short {
  display: none;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  cursor: pointer;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  transition: background-color .2s ease;
}

.nav-toggle:hover {
  background: rgba(30, 78, 69, .06);
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: all .3s ease;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Section common ===== */
.section {
  padding: 84px 0;
}

.section--tint {
  background: #F1EBE1;
}

.section--dark {
  background: var(--primary);
  color: #fff;
}

.section--dark .section-head h2,
.section--dark .section-head p {
  color: #fff;
}

.section-head {
  text-align: center;
  max-width: 740px;
  margin: 0 auto 52px;
}

.section-head h2 {
  font-size: 30px;
  letter-spacing: .02em;
}

.section-head p {
  color: var(--text-muted);
  margin-top: 10px;
  font-size: 16px;
}

.section--dark .section-head p {
  color: rgba(255, 255, 255, .78);
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--accent-hover);
  background: var(--accent-soft);
  padding: 5px 16px;
  border-radius: 100rem;
  margin-bottom: 18px;
}

.section--dark .eyebrow {
  background: rgba(255, 255, 255, .12);
  color: var(--accent);
}

/* ===== Category hero ===== */
.cat-hero {
  padding: 72px 0 80px;
  background: linear-gradient(120deg, rgba(20, 53, 46, .94) 0%, rgba(30, 78, 69, .82) 55%, rgba(46, 107, 91, .65) 100%), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
  color: #fff;
}

.cat-hero .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}

.cat-breadcrumb {
  font-size: 14px;
  color: rgba(255, 255, 255, .72);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.cat-breadcrumb a {
  color: rgba(255, 255, 255, .9);
}

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

.cat-breadcrumb i {
  font-size: 10px;
  color: rgba(255, 255, 255, .45);
}

.cat-hero h1 {
  font-size: 42px;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: .02em;
}

.cat-hero .lead {
  font-size: 17px;
  color: rgba(255, 255, 255, .88);
  max-width: 470px;
  line-height: 1.7;
}

.cat-hero-aside {
  max-width: 390px;
  width: 100%;
  background: rgba(255, 255, 255, .10);
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 20px;
  padding: 30px 32px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(255, 255, 255, .92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, .18);
}

.cat-hero-aside strong {
  color: var(--accent);
  font-weight: 600;
}

/* ===== Intro ===== */
.cat-intro {
  background: var(--bg);
}

.intro-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 56px;
  align-items: center;
}

.intro-media {
  position: relative;
}

.intro-media::after {
  content: '';
  position: absolute;
  inset: 18px -18px -18px 18px;
  border: 2px solid var(--accent-soft);
  border-radius: 20px;
  z-index: 0;
}

.intro-media img {
  border-radius: 20px;
  box-shadow: var(--shadow-hover);
  position: relative;
  z-index: 1;
}

.intro-copy h2 {
  font-size: 30px;
  margin-bottom: 18px;
}

.intro-copy p {
  color: var(--text-muted);
  margin-bottom: 14px;
  font-size: 16px;
}

.intro-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.intro-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 500;
  box-shadow: var(--shadow-card);
}

.intro-feature i {
  color: var(--accent);
  font-size: 18px;
  width: 20px;
  text-align: center;
}

/* ===== Data band ===== */
.cat-data {
  background: #F1EBE1;
  padding: 64px 0;
}

.data-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.data-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 32px 24px 28px;
  text-align: center;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(230, 223, 211, .5);
  transition: transform .25s ease, box-shadow .25s ease;
}

.data-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.data-card .num {
  font-size: 46px;
  font-weight: 800;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  line-height: 1.15;
}

.data-card .num small {
  font-size: .55em;
  font-weight: 600;
  margin-left: 2px;
}

.data-card .label {
  font-weight: 600;
  font-size: 16px;
  color: var(--text-main);
  margin-top: 10px;
}

.data-card .note {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
  line-height: 1.5;
}

/* ===== Scenarios ===== */
.cat-scenarios {
  background: var(--bg);
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.scenario-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 34px 28px;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(230, 223, 211, .7);
  transition: transform .25s ease, box-shadow .25s ease;
}

.scenario-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.scenario-icon {
  width: 56px;
  height: 56px;
  background: var(--accent-soft);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-hover);
  font-size: 24px;
  margin-bottom: 20px;
  transition: background-color .25s ease, color .25s ease;
}

.scenario-card:hover .scenario-icon {
  background: var(--primary);
  color: #fff;
}

.scenario-card h3 {
  font-size: 20px;
  margin-bottom: 10px;
}

.scenario-card p {
  color: var(--text-muted);
  font-size: 15px;
  margin-bottom: 0;
  line-height: 1.7;
}

/* ===== Process ===== */
.cat-process {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}

.cat-process .section-head h2,
.cat-process .section-head p {
  color: #fff;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.process-step {
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  transition: background-color .25s ease, transform .25s ease;
}

.process-step:hover {
  background: rgba(255, 255, 255, .12);
  transform: translateY(-3px);
}

.process-step .step-num {
  font-size: 36px;
  font-weight: 800;
  font-family: var(--font-serif);
  color: var(--accent);
  line-height: 1;
  display: block;
  margin-bottom: 14px;
}

.process-step h3 {
  color: #fff;
  font-size: 18px;
  margin-bottom: 8px;
}

.process-step p {
  color: rgba(255, 255, 255, .76);
  font-size: 14px;
  margin-bottom: 0;
  line-height: 1.65;
}

/* ===== FAQ ===== */
.cat-faq {
  background: var(--bg);
}

.faq-grid {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 56px;
  align-items: start;
}

.faq-side h2 {
  font-size: 30px;
  margin-bottom: 14px;
}

.faq-side p {
  color: var(--text-muted);
  font-size: 15px;
}

.accordion {
  --bs-accordion-border-color: var(--border);
  --bs-accordion-border-radius: 12px;
  --bs-accordion-inner-border-radius: 12px;
  --bs-accordion-bg: var(--surface);
  --bs-accordion-btn-color: var(--text-main);
  --bs-accordion-btn-bg: var(--surface);
  --bs-accordion-active-color: var(--primary);
  --bs-accordion-active-bg: rgba(30, 78, 69, .04);
}

.accordion-item {
  border: 1px solid var(--border) !important;
  border-radius: 12px !important;
  margin-bottom: 14px;
  background: var(--surface);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: border-color .25s ease, box-shadow .25s ease;
}

.accordion-item:has(.accordion-button:not(.collapsed)) {
  border-color: var(--primary) !important;
  box-shadow: 0 4px 18px rgba(30, 78, 69, .08);
}

.accordion-button {
  background: var(--surface);
  color: var(--text-main);
  font-weight: 600;
  font-size: 16px;
  box-shadow: none !important;
  padding: 20px 24px;
  gap: 14px;
  align-items: center;
}

.accordion-button:not(.collapsed) {
  background: rgba(30, 78, 69, .04);
  color: var(--primary);
  box-shadow: none !important;
}

.accordion-button::after {
  display: none;
}

.faq-icon {
  margin-left: auto;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  transition: transform .3s ease, background-color .3s ease, color .3s ease;
}

.accordion-button:not(.collapsed) .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}

.accordion-body {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.75;
  padding: 0 24px 22px;
}

/* ===== CTA ===== */
.cat-cta {
  background: var(--primary-dark);
  padding: 76px 0;
  position: relative;
  overflow: hidden;
}

.cat-cta::before {
  content: '';
  position: absolute;
  right: -80px;
  top: -80px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(200, 149, 90, .16);
}

.cat-cta::after {
  content: '';
  position: absolute;
  left: -40px;
  bottom: -80px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 30px solid rgba(255, 255, 255, .04);
}

.cta-box {
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.cta-box h2 {
  color: #fff;
  font-size: 30px;
  margin-bottom: 14px;
}

.cta-box p {
  color: rgba(255, 255, 255, .82);
  font-size: 16px;
  margin-bottom: 30px;
  line-height: 1.7;
}

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

.btn {
  font-family: var(--font-sans);
  font-weight: 600;
  border-radius: 100rem;
  padding: 12px 30px;
  font-size: 15px;
  transition: all .25s ease;
}

.btn-gold {
  background: var(--accent);
  color: #fff;
  border: 2px solid var(--accent);
  box-shadow: 0 4px 14px rgba(200, 149, 90, .35);
}

.btn-gold:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(200, 149, 90, .45);
}

.btn-outline-light {
  background: transparent;
  color: rgba(255, 255, 255, .92);
  border: 2px solid rgba(255, 255, 255, .55);
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, .1);
  border-color: #fff;
  color: #fff;
  transform: translateY(-2px);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, .78);
  padding: 64px 0 28px;
  border-top: 3px solid var(--accent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 44px;
}

.footer-brand__name {
  font-family: var(--font-serif);
  font-size: 21px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
  line-height: 1.3;
}

.footer-brand__desc {
  font-size: 14px;
  color: rgba(255, 255, 255, .62);
  line-height: 1.7;
  margin-bottom: 0;
}

.site-footer h4 {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  position: relative;
  padding-bottom: 12px;
  margin-bottom: 18px;
}

.site-footer h4::before {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 26px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.site-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-footer ul li {
  margin-bottom: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, .6);
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-footer ul li i {
  color: var(--accent);
  width: 16px;
  text-align: center;
  font-size: 14px;
}

.site-footer a {
  color: rgba(255, 255, 255, .68);
  font-size: 14px;
  display: inline-block;
  transition: color .2s ease;
}

.site-footer a:hover {
  color: var(--accent);
  transform: translateX(2px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, .48);
}

.footer-bottom p {
  margin-bottom: 0;
}

/* ===== Responsive ===== */
@media (max-width: 1199px) {
  .data-card .num {
    font-size: 38px;
  }
  .cat-hero h1 {
    font-size: 36px;
  }
  .section {
    padding: 68px 0;
  }
  .process-step .step-num {
    font-size: 30px;
  }
}

@media (max-width: 991px) {
  .cat-hero .container {
    flex-direction: column;
    text-align: center;
  }
  .cat-hero .lead {
    margin-left: auto;
    margin-right: auto;
  }
  .cat-breadcrumb {
    justify-content: center;
  }
  .cat-hero-aside {
    max-width: 100%;
    text-align: left;
  }
  .intro-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .intro-media {
    order: -1;
    max-width: 560px;
    margin: 0 auto;
  }
  .data-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .scenario-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }
  .faq-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .section {
    padding: 52px 0;
  }
  .section-head {
    margin-bottom: 36px;
  }
  .section-head h2 {
    font-size: 25px;
  }
  .cat-hero {
    padding: 48px 0 56px;
  }
  .cat-hero h1 {
    font-size: 30px;
  }
  .cat-hero .lead {
    font-size: 15px;
  }
  .cat-hero-aside {
    padding: 24px;
    font-size: 14px;
  }
  .intro-copy h2 {
    font-size: 24px;
  }
  .data-card .num {
    font-size: 30px;
  }
  .data-card {
    padding: 22px 16px 20px;
  }
  .data-card .label {
    font-size: 14px;
  }
  .data-card .note {
    font-size: 12px;
  }
  .scenario-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .process-steps {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .cta-box h2 {
    font-size: 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .nav-toggle {
    display: flex;
  }
  .nav-links-wrap {
    display: none;
    position: absolute;
    top: 78px;
    left: 16px;
    right: 16px;
    background: var(--surface);
    border-radius: 16px;
    box-shadow: var(--shadow-pop);
    padding: 24px;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    border: 1px solid var(--border);
  }
  .nav-links-wrap.open {
    display: flex;
  }
  .nav-links {
    flex-direction: column;
    gap: 4px;
    width: 100%;
    margin-bottom: 16px;
  }
  .nav-links a {
    display: block;
    padding: 10px 4px;
    font-size: 16px;
    border-radius: 8px;
  }
  .nav-links a.active::after {
    display: none;
  }
  .nav-links a.active {
    background: var(--accent-soft);
    color: var(--accent-hover);
    padding-left: 14px;
  }
  .btn-nav-cta {
    width: 100%;
  }
  .cta-text-full {
    display: none;
  }
  .cta-text-short {
    display: inline;
  }
}

@media (max-width: 520px) {
  .data-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .data-card .num {
    font-size: 26px;
  }
  .data-card .note {
    display: none;
  }
  .cta-btn-group {
    flex-direction: column;
  }
  .cta-btn-group .btn {
    width: 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .brand__name {
    font-size: 19px;
  }
  .brand__sub {
    font-size: 11px;
  }
}

/* roulang page: article */
:root {
            --primary: #1E4E45;
            --primary-dark: #14352E;
            --primary-light: #2E6B5B;
            --accent: #C8955A;
            --accent-hover: #AA7C46;
            --accent-soft: #F0E3CE;
            --bg: #F8F5EF;
            --surface: #FFFFFF;
            --text-main: #22332D;
            --text-muted: #6B7B74;
            --border: #E6DFD3;
            --success: #3D8B62;
            --radius-lg: 16px;
            --radius-sm: 10px;
            --shadow-card: 0 2px 12px rgba(30,78,69,0.06);
            --shadow-hover: 0 10px 28px rgba(30,78,69,0.12);
            --font-heading: "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
            --font-body: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.75;
            background: var(--bg);
            color: var(--text-main);
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: all 0.25s ease; }
        ul, ol { list-style: none; }
        button { font-family: inherit; cursor: pointer; border: none; background: none; }
        input, textarea, select { font-family: inherit; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

        .btn {
            border: none;
            border-radius: 100rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            transition: all 0.3s ease;
        }
        .btn-main {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 12px rgba(200,149,90,0.3);
        }
        .btn-main:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(200,149,90,0.4);
        }
        .btn-outline-custom {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline-custom:hover {
            background: rgba(30,78,69,0.08);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(248,245,239,0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(20,53,46,0.08);
        }
        .main-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 76px;
            gap: 24px;
        }
        .brand {
            display: flex;
            flex-direction: column;
            gap: 2px;
            line-height: 1.2;
            flex-shrink: 0;
        }
        .brand__name {
            font-family: var(--font-heading);
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
        }
        .brand__sub {
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 1px;
        }
        .nav-links-wrap {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 26px;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            position: relative;
            padding: 8px 2px;
        }
        .nav-links a:hover { color: var(--primary); }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .btn-nav-cta {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
            padding: 10px 24px;
            box-shadow: 0 4px 12px rgba(200,149,90,0.3);
            font-size: 15px;
            flex-shrink: 0;
        }
        .btn-nav-cta:hover {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(200,149,90,0.4);
        }
        .cta-text-short { display: none; }
        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            border: 1px solid var(--border);
            background: var(--surface);
            padding: 8px;
            transition: all 0.3s ease;
        }
        .nav-toggle span {
            display: block;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
        .nav-toggle.active span:nth-child(2) { opacity: 0; }
        .nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

        .article-hero {
            background: linear-gradient(120deg, rgba(30,78,69,0.92) 0%, rgba(30,78,69,0.78) 50%, rgba(20,53,46,0.65) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 72px 0 64px;
            color: #fff;
            position: relative;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 48px;
            background: linear-gradient(to bottom, transparent, var(--bg));
            pointer-events: none;
        }
        .article-breadcrumb {
            margin-bottom: 36px;
        }
        .breadcrumb-list {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255,255,255,0.85);
        }
        .breadcrumb-list a {
            color: rgba(255,255,255,0.85);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb-list a:hover {
            color: var(--accent-soft);
        }
        .breadcrumb-sep {
            opacity: 0.55;
            margin: 0 2px;
        }
        .breadcrumb-current {
            color: var(--accent-soft);
            font-weight: 500;
        }
        .article-headline {
            font-family: var(--font-heading);
            font-size: 42px;
            font-weight: 700;
            line-height: 1.3;
            max-width: 860px;
            margin-bottom: 22px;
            color: #fff;
            text-wrap: balance;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 14px;
            color: rgba(255,255,255,0.82);
        }
        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .meta-item i {
            color: var(--accent);
        }

        .article-main {
            background: var(--bg);
            padding: 56px 0 64px;
        }
        .article-body {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 48px;
            max-width: 880px;
            margin: 0 auto;
            border: 1px solid var(--border);
        }
        .article-content {
            max-width: 780px;
            margin: 0 auto;
        }
        .article-content p {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-main);
            margin-bottom: 24px;
        }
        .article-content h2 {
            font-family: var(--font-heading);
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            margin: 40px 0 20px;
            line-height: 1.4;
        }
        .article-content h3 {
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 600;
            color: var(--primary);
            margin: 32px 0 16px;
            line-height: 1.5;
        }
        .article-content h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
            margin: 24px 0 12px;
        }
        .article-content img {
            border-radius: 12px;
            margin: 24px 0;
            box-shadow: var(--shadow-card);
        }
        .article-content figure {
            margin: 24px 0;
        }
        .article-content figcaption {
            font-size: 13px;
            color: var(--text-muted);
            text-align: center;
            margin-top: 10px;
        }
        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: var(--accent-soft);
            padding: 18px 24px;
            border-radius: 0 8px 8px 0;
            color: var(--text-main);
            margin: 24px 0;
            font-size: 16px;
            line-height: 1.7;
        }
        .article-content blockquote p {
            margin-bottom: 0;
        }
        .article-content ul,
        .article-content ol {
            margin: 16px 0 24px;
            padding-left: 24px;
        }
        .article-content ul li {
            list-style: disc;
            margin-bottom: 8px;
        }
        .article-content ol li {
            list-style: decimal;
            margin-bottom: 8px;
        }
        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content a:hover {
            color: var(--accent-hover);
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 15px;
        }
        .article-content th,
        .article-content td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }
        .article-content th {
            background: var(--accent-soft);
            font-weight: 600;
        }

        .article-tags {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            padding-top: 28px;
            margin-top: 40px;
            border-top: 1px solid var(--border);
        }
        .tag-item {
            background: var(--accent-soft);
            color: var(--accent-hover);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 100rem;
            transition: all 0.3s ease;
        }
        .tag-item:hover {
            background: var(--accent);
            color: #fff;
        }

        .article-not-found {
            text-align: center;
            padding: 48px 20px;
            max-width: 780px;
            margin: 0 auto;
        }
        .article-not-found i {
            font-size: 56px;
            color: var(--accent);
            margin-bottom: 18px;
            display: block;
        }
        .not-found-title {
            font-family: var(--font-heading);
            font-size: 34px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 14px;
        }
        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 28px;
            font-size: 16px;
        }

        .article-brand-block {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            padding: 72px 0;
            color: #fff;
            position: relative;
        }
        .brand-block-title {
            font-family: var(--font-heading);
            font-size: 30px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 18px;
            color: #fff;
        }
        .brand-block-text {
            color: rgba(255,255,255,0.85);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 0;
        }
        .brand-points {
            display: grid;
            gap: 18px;
            margin-top: 12px;
        }
        .brand-point {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.14);
            border-radius: 12px;
            padding: 16px 20px;
            font-weight: 500;
            transition: all 0.3s ease;
        }
        .brand-point:hover {
            background: rgba(255,255,255,0.14);
            transform: translateX(4px);
        }
        .brand-point i {
            color: var(--accent);
            font-size: 16px;
            margin-top: 5px;
        }
        .brand-point span {
            font-size: 15px;
            line-height: 1.6;
        }

        .related-section {
            background: var(--bg);
            padding: 72px 0;
            border-top: 1px solid var(--border);
        }
        .related-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 36px;
        }
        .related-header h2 {
            font-family: var(--font-heading);
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            margin: 0;
        }
        .related-header::after {
            content: '';
            flex: 1;
            height: 1px;
            background: var(--border);
            margin-left: 24px;
        }
        .related-grid {
            margin: 0 -12px;
        }
        .related-grid > [class*="col-"] {
            padding: 0 12px;
        }
        .related-card {
            background: var(--surface);
            border-radius: 14px;
            overflow: hidden;
            display: block;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            height: 100%;
            transition: all 0.4s ease;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .related-card:hover .related-card__img {
            transform: scale(1.05);
        }
        .related-card__img-wrap {
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }
        .related-card__img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .related-card__body {
            padding: 20px 22px 22px;
        }
        .related-card__body h3 {
            font-family: var(--font-heading);
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.55;
            margin-bottom: 12px;
            transition: color 0.3s ease;
        }
        .related-card:hover .related-card__body h3 {
            color: var(--primary);
        }
        .related-card__date {
            font-size: 13px;
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .related-card__date i {
            color: var(--accent);
        }
        .related-back {
            text-align: center;
            margin-top: 48px;
        }

        .article-cta {
            background: var(--primary);
            padding: 64px 0;
        }
        .article-cta__inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }
        .cta-text h2 {
            font-family: var(--font-heading);
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            line-height: 1.4;
            margin-bottom: 8px;
        }
        .cta-text p {
            color: rgba(255,255,255,0.85);
            font-size: 16px;
            margin: 0;
        }

        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.82);
            padding: 64px 0 0;
            font-size: 14px;
            line-height: 1.7;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1.2fr 1.2fr;
            gap: 40px;
            padding-bottom: 48px;
        }
        .footer-brand__name {
            font-family: var(--font-heading);
            font-size: 22px;
            font-weight: 700;
            color: var(--accent-soft);
            margin-bottom: 12px;
        }
        .footer-brand__desc {
            font-size: 14px;
            color: rgba(255,255,255,0.7);
            line-height: 1.7;
            margin: 0;
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 13px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            margin-bottom: 18px;
            padding-left: 12px;
            position: relative;
            text-transform: uppercase;
        }
        .footer-col h4::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 14px;
            background: var(--accent);
            border-radius: 3px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            color: rgba(255,255,255,0.7);
            font-size: 14px;
        }
        .footer-col ul a:hover {
            color: var(--accent-soft);
            padding-left: 4px;
        }
        .footer-contact ul li {
            color: rgba(255,255,255,0.7);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-contact ul li i {
            color: var(--accent);
            width: 18px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            color: rgba(255,255,255,0.55);
            font-size: 13px;
        }
        .footer-bottom p {
            margin: 0;
        }

        @media (max-width: 1200px) {
            .article-headline { font-size: 36px; }
        }
        @media (max-width: 991px) {
            .main-nav { gap: 12px; }
            .brand__name { font-size: 19px; }
            .nav-links { gap: 14px; }
            .nav-links a { font-size: 14px; }
            .btn-nav-cta { padding: 8px 18px; font-size: 14px; }
            .article-hero { padding: 56px 0 48px; }
            .article-body { padding: 36px; }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 767px) {
            .container { padding: 0 16px; }
            .main-nav { min-height: 64px; }
            .nav-toggle { display: flex; }
            .nav-links-wrap {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg);
                flex-direction: column;
                align-items: stretch;
                padding: 16px;
                box-shadow: 0 12px 24px rgba(20,53,46,0.14);
                display: none;
                gap: 14px;
                max-height: calc(100vh - 64px);
                overflow-y: auto;
                border-bottom: 2px solid var(--accent-soft);
            }
            .nav-links-wrap.open {
                display: flex;
            }
            .nav-links {
                flex-direction: column;
                gap: 2px;
            }
            .nav-links a {
                display: block;
                padding: 12px 4px;
                border-bottom: 1px solid var(--border);
                font-size: 15px;
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links a.active {
                color: var(--accent-hover);
            }
            .btn-nav-cta {
                width: 100%;
                padding: 12px 20px;
            }
            .cta-text-full { display: none; }
            .cta-text-short { display: inline; }

            .article-hero { padding: 44px 0 40px; }
            .article-breadcrumb { margin-bottom: 24px; }
            .article-headline {
                font-size: 28px;
                line-height: 1.4;
            }
            .article-meta { gap: 12px; font-size: 13px; }
            .article-main { padding: 32px 0 40px; }
            .article-body {
                padding: 24px 18px;
                border-radius: 12px;
            }
            .article-content p { font-size: 16px; line-height: 1.75; }
            .article-content h2 { font-size: 24px; }
            .article-content h3 { font-size: 19px; }
            .article-content blockquote { padding: 14px 18px; }
            .article-tags { margin-top: 28px; padding-top: 20px; }

            .article-brand-block { padding: 48px 0; }
            .brand-block-title { font-size: 24px; }
            .brand-points { margin-top: 24px; }

            .related-section { padding: 48px 0; }
            .related-header h2 { font-size: 24px; }
            .related-header::after { display: none; }

            .article-cta { padding: 48px 0; }
            .article-cta__inner { flex-direction: column; text-align: center; }
            .cta-text h2 { font-size: 24px; }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }
        }
        @media (max-width: 520px) {
            .article-headline { font-size: 24px; }
            .article-meta { flex-direction: column; gap: 8px; }
            .article-body { padding: 18px 14px; }
            .brand-point { padding: 12px 16px; }
            .related-header { margin-bottom: 24px; }
            .related-card__body h3 { font-size: 17px; }
            .footer-grid { gap: 24px; }
        }

/* roulang page: category2 */
:root {
  --primary: #1E4E45;
  --primary-dark: #14352E;
  --primary-light: #2E6B5B;
  --accent: #C8955A;
  --accent-hover: #AA7C46;
  --accent-soft: #F0E3CE;
  --bg: #F8F5EF;
  --surface: #FFFFFF;
  --text-main: #22332D;
  --text-muted: #6B7B74;
  --border: #E6DFD3;
  --success: #3D8B62;
  --radius-lg: 16px;
  --radius-sm: 10px;
  --radius-pill: 100rem;
  --shadow-sm: 0 2px 12px rgba(30,78,69,0.06);
  --shadow-md: 0 10px 28px rgba(30,78,69,0.12);
  --shadow-lg: 0 8px 24px rgba(20,53,46,0.16);
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text-main);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid rgba(200, 149, 90, 0.55);
  outline-offset: 2px;
  border-radius: 6px;
}

h1,
h2,
h3,
h4 {
  font-family: "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
  color: var(--text-main);
  font-weight: 700;
  margin-top: 0;
  line-height: 1.4;
}

h1 {
  font-size: 38px;
  letter-spacing: 0.02em;
}

h2 {
  font-size: 28px;
  margin-bottom: 20px;
}

h3 {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 12px;
}

p {
  margin-top: 0;
  margin-bottom: 16px;
}

.container {
  max-width: 1200px;
  padding-left: 24px;
  padding-right: 24px;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(248, 245, 239, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 6px 24px rgba(30, 78, 69, 0.10);
  background: rgba(248, 245, 239, 0.98);
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 74px;
  position: relative;
}

.brand {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  flex-shrink: 0;
  z-index: 1001;
}

.brand__name {
  font-family: "Noto Serif SC", "Songti SC", serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.brand__sub {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.18em;
  margin-top: 2px;
  white-space: nowrap;
}

.nav-links-wrap {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-main);
  padding: 6px 2px;
  position: relative;
  white-space: nowrap;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.3s ease;
}

.nav-links a:hover {
  color: var(--primary-light);
}

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

.nav-links a.active {
  color: var(--primary);
  font-weight: 600;
}

.btn {
  border-radius: var(--radius-pill);
  font-weight: 600;
  transition: var(--transition);
}

.btn-nav-cta {
  background: var(--accent);
  color: #fff;
  padding: 10px 26px;
  font-size: 15px;
  border: none;
  box-shadow: 0 4px 12px rgba(200, 149, 90, 0.30);
  white-space: nowrap;
  margin-left: 8px;
}

.btn-nav-cta:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(200, 149, 90, 0.40);
}

.btn-nav-cta:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(200, 149, 90, 0.25);
}

.cta-text-short {
  display: none;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  margin: 5px 0;
  transition: var(--transition);
}

/* Category Hero */
.category-hero {
  background: linear-gradient(135deg, var(--accent-soft) 0%, var(--bg) 55%, rgba(255, 255, 255, 0.4) 100%);
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.category-hero::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -40px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(200, 149, 90, 0.08);
  pointer-events: none;
}

.category-hero .container {
  position: relative;
  z-index: 1;
}

.breadcrumb-custom {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.breadcrumb-custom a {
  color: var(--text-muted);
}

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

.breadcrumb-custom .separator {
  color: var(--accent);
  font-size: 12px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: end;
}

.category-hero h1 {
  margin-bottom: 12px;
  color: var(--primary);
  font-size: 42px;
  position: relative;
}

.category-hero h1::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 42px;
  background: var(--accent);
  border-radius: 4px;
  margin-right: 16px;
  vertical-align: middle;
}

.hero-note {
  margin: 0;
  font-size: 16px;
  color: var(--text-main);
  line-height: 1.8;
  padding-left: 24px;
  border-left: 2px solid var(--accent);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
  padding-left: 24px;
}

.hero-tags span {
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--border);
  color: var(--primary);
  font-size: 12px;
  border-radius: 100rem;
  padding: 4px 14px;
  font-weight: 500;
}

/* Page sections */
.page-section {
  padding: 80px 0;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-hover);
  background: var(--accent-soft);
  border-radius: 100rem;
  padding: 4px 16px;
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.content-narrow {
  max-width: 900px;
  margin: 0 auto;
}

/* Intro section */
.intro-section {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.intro-section h2 {
  font-size: 30px;
  color: var(--primary);
}

.intro-section p {
  font-size: 16px;
  color: var(--text-main);
  line-height: 1.85;
  margin-bottom: 18px;
}

.intro-figure {
  margin: 40px 0 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  position: relative;
}

.intro-figure img {
  display: block;
  width: 100%;
  height: auto;
}

.intro-figure figcaption {
  font-size: 13px;
  color: var(--text-muted);
  background: var(--bg);
  padding: 10px 16px;
  text-align: center;
}

/* Data band */
.data-band {
  background: var(--primary);
  padding: 56px 0;
}

.data-band .data-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.data-band .data-item {
  text-align: center;
  padding: 12px 8px;
  position: relative;
}

.data-band .data-item:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -16px;
  top: 20%;
  height: 60%;
  width: 1px;
  background: rgba(255, 255, 255, 0.15);
}

.data-band .data-number {
  font-family: "Noto Serif SC", Georgia, serif;
  font-size: 48px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

.data-band .data-number .suffix {
  font-size: 22px;
  font-weight: 700;
  margin-left: 2px;
}

.data-band .data-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  margin-top: 6px;
}

/* Path section */
.path-section {
  background: var(--bg);
}

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}

.section-head h2 {
  color: var(--primary);
}

.section-head p {
  color: var(--text-muted);
  font-size: 15px;
}

.path-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  position: relative;
}

.path-grid::before {
  content: "";
  position: absolute;
  top: 72px;
  left: 12%;
  right: 12%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  z-index: 0;
}

.path-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  position: relative;
  z-index: 1;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.path-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--primary-light);
}

.path-step {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Noto Serif SC", serif;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 18px;
  box-shadow: 0 4px 12px rgba(30, 78, 69, 0.2);
  position: relative;
}

.path-card:nth-child(2) .path-step {
  background: var(--accent);
  box-shadow: 0 4px 12px rgba(200, 149, 90, 0.3);
}

.path-card h3 {
  font-size: 19px;
  color: var(--primary);
  margin-bottom: 12px;
}

.path-card p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 0;
  line-height: 1.8;
}

.path-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-hover);
}

.path-link i {
  margin-left: 4px;
  transition: transform 0.3s ease;
}

.path-link:hover i {
  transform: translateX(4px);
}

/* Split section */
.split-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.split-text h2 {
  color: var(--primary);
  margin-bottom: 18px;
}

.split-text p {
  font-size: 15px;
  color: var(--text-main);
  line-height: 1.85;
  margin-bottom: 16px;
}

.split-media {
  position: relative;
}

.split-media img {
  display: block;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  width: 100%;
}

.split-media::before {
  content: "";
  position: absolute;
  top: -16px;
  right: -16px;
  width: 80px;
  height: 80px;
  border: 4px solid var(--accent-soft);
  border-radius: 50%;
  z-index: 1;
  pointer-events: none;
}

.split-media::after {
  content: "";
  position: absolute;
  bottom: -14px;
  left: -14px;
  width: 100px;
  height: 100px;
  background: var(--accent-soft);
  border-radius: 16px;
  z-index: -1;
  opacity: 0.4;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--accent-hover);
  font-size: 14px;
  margin-top: 4px;
}

.text-link i {
  transition: transform 0.3s ease;
}

.text-link:hover {
  color: var(--accent);
}

.text-link:hover i {
  transform: translateX(4px);
}

/* Service section */
.service-section {
  background: var(--bg);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 30px;
  display: flex;
  gap: 20px;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.service-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--primary-light);
}

.service-card .icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent-hover);
  font-size: 20px;
  transition: var(--transition);
}

.service-card:hover .icon-wrap {
  background: var(--primary);
  color: #fff;
}

.service-card h3 {
  color: var(--primary);
  font-size: 17px;
  margin-bottom: 8px;
}

.service-card p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 10px;
  line-height: 1.75;
}

.service-card .card-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-hover);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.service-card .card-link i {
  font-size: 12px;
  transition: transform 0.3s ease;
}

.service-card .card-link:hover i {
  transform: translateX(4px);
}

/* FAQ section */
.faq-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.faq-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 60px;
  align-items: start;
}

.faq-side h2 {
  color: var(--primary);
}

.faq-side p {
  color: var(--text-muted);
  font-size: 15px;
}

.faq-side a {
  font-weight: 600;
  color: var(--accent-hover);
}

.accordion {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.accordion-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: var(--transition);
}

.accordion-item:has(.accordion-button:not(.collapsed)) {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-sm);
  background: #FDFCF9;
}

.accordion-button {
  background: transparent;
  color: var(--text-main);
  font-size: 16px;
  font-weight: 600;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  padding: 20px 24px;
  box-shadow: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  text-align: left;
  transition: var(--transition);
}

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

.accordion-button:focus-visible {
  outline: 3px solid rgba(200, 149, 90, 0.5);
  outline-offset: 2px;
  border-radius: 8px;
}

.accordion-button:not(.collapsed) {
  color: var(--primary);
  background: transparent;
  box-shadow: none;
}

.accordion-button::after {
  display: none;
}

.accordion-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border: 1.5px solid var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-hover);
  font-size: 14px;
  transition: var(--transition);
}

.accordion-button:not(.collapsed) .accordion-icon {
  background: var(--accent);
  color: #fff;
  transform: rotate(45deg);
}

.accordion-body {
  padding: 0 24px 20px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
  border-top: 1px solid transparent;
}

.accordion-button:not(.collapsed) ~ .accordion-collapse .accordion-body {
  border-top-color: var(--border);
}

/* CTA section */
.cta-section {
  background: var(--primary);
  padding: 72px 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: -30px;
  left: -30px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 24px solid rgba(255, 255, 255, 0.04);
}

.cta-section::after {
  content: "";
  position: absolute;
  bottom: -50px;
  right: -20px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: 30px solid rgba(200, 149, 90, 0.12);
}

.cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 720px;
}

.cta-inner h2 {
  color: #fff;
  font-size: 32px;
  margin-bottom: 16px;
}

.cta-inner p {
  color: rgba(255, 255, 255, 0.75);
  font-size: 17px;
  margin-bottom: 32px;
}

.btn-cta {
  background: var(--accent);
  color: #fff;
  padding: 14px 42px;
  font-size: 16px;
  border-radius: 100rem;
  font-weight: 600;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 6px 20px rgba(200, 149, 90, 0.35);
  transition: var(--transition);
}

.btn-cta:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(200, 149, 90, 0.45);
}

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

.btn-cta i {
  font-size: 15px;
}

/* Footer */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand__name {
  font-family: "Noto Serif SC", "Songti SC", serif;
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.footer-brand__desc {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.8;
  margin-bottom: 0;
}

.footer-col h4 {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
  padding-left: 14px;
  position: relative;
}

.footer-col h4::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 18px;
  background: var(--accent);
  border-radius: 3px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-col li {
  margin-bottom: 12px;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.75);
  font-size: 14px;
  transition: var(--transition);
}

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

.footer-contact li {
  color: rgba(255, 255, 255, 0.7);
}

.footer-contact i {
  color: var(--accent);
  width: 16px;
  text-align: center;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  padding: 24px 0 28px;
  gap: 8px;
}

.footer-bottom p {
  margin: 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

/* Responsive */
@media (max-width: 1199.98px) {
  .data-band .data-number {
    font-size: 40px;
  }
}

@media (max-width: 991.98px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .hero-note {
    padding-left: 0;
    border-left: none;
    border-top: 2px solid var(--accent);
    padding-top: 16px;
  }
  .hero-tags {
    padding-left: 0;
  }
  .data-band .data-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .data-band .data-item:nth-child(2)::after {
    display: none;
  }
  .path-grid {
    grid-template-columns: 1fr;
    max-width: 460px;
    margin: 0 auto;
  }
  .path-grid::before {
    display: none;
  }
  .split-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .service-grid {
    grid-template-columns: 1fr;
    max-width: 520px;
    margin: 0 auto;
  }
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 767.98px) {
  .nav-toggle {
    display: block;
  }
  .nav-links-wrap {
    position: fixed;
    top: 0;
    right: auto;
    left: 0;
    width: 100%;
    background: rgba(248, 245, 239, 0.98);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 80px 24px 24px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    transition: transform 0.35s ease;
    z-index: 1000;
    border-bottom: 1px solid var(--border);
  }
  .nav-links-wrap.open {
    transform: translateY(0);
  }
  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    width: 100%;
  }
  .nav-links li {
    width: 100%;
  }
  .nav-links a {
    display: block;
    padding: 12px 0;
    font-size: 16px;
    border-bottom: 1px solid var(--border);
  }
  .nav-links a.active::after {
    width: 40px;
  }
  .btn-nav-cta {
    margin: 18px 0 0;
    align-self: flex-start;
  }
  .cta-text-full {
    display: none;
  }
  .cta-text-short {
    display: inline;
  }
  .nav-toggle {
    position: relative;
    z-index: 1002;
  }
  .nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
  .category-hero {
    padding: 48px 0 40px;
  }
  .category-hero h1 {
    font-size: 30px;
  }
  .category-hero h1::before {
    height: 32px;
    margin-right: 12px;
  }
  .page-section {
    padding: 56px 0;
  }
  .h2,
  h2 {
    font-size: 24px !important;
  }
  .h3,
  h3 {
    font-size: 17px !important;
  }
  .data-band .data-number {
    font-size: 30px;
  }
  .data-band .data-number .suffix {
    font-size: 16px;
  }
  .data-band .data-label {
    font-size: 13px;
  }
  .data-band .data-row {
    gap: 16px;
  }
  .data-band .data-item {
    padding: 8px 4px;
  }
  .path-card {
    padding: 24px 20px;
  }
  .service-card {
    flex-direction: column;
    padding: 24px 20px;
  }
  .site-footer {
    padding: 48px 0 0;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .cta-inner h2 {
    font-size: 26px;
  }
  .cta-inner p {
    font-size: 15px;
  }
  .btn-cta {
    padding: 12px 34px;
    font-size: 15px;
  }
}

@media (max-width: 520px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .brand__name {
    font-size: 17px;
  }
  .brand__sub {
    font-size: 10px;
  }
  .data-band .data-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .data-band .data-item:last-child::after {
    display: none;
  }
  .data-band .data-number {
    font-size: 28px;
  }
  .hero-grid {
    gap: 16px;
  }
  .hero-note {
    font-size: 14px;
  }
  .path-card {
    padding: 20px 18px;
  }
  .split-grid {
    gap: 28px;
  }
  .split-media::before,
  .split-media::after {
    display: none;
  }
  .accordion-button {
    padding: 16px 18px;
    font-size: 15px;
  }
  .accordion-body {
    padding: 0 18px 16px;
  }
}