/* roulang page: index */
:root {
    --paper: #F4F0E8;
    --surface: #FFFFFF;
    --brand: #1F4D40;
    --brand-deep: #17362E;
    --ink: #1C1E1A;
    --gray: #5F625B;
    --line: #D9D2C3;
    --accent: #E0A32C;
    --orange: #C65A2E;
    --radius-card: 4px;
    --radius-img: 6px;
    --shadow-card: 0 1px 2px rgba(0,0,0,0.06);
    --shadow-lift: 6px 6px 0 rgba(28,30,26,0.08);
    --side: 64px;
    --nav-h: 64px;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--paper);
    color: var(--ink);
    font-size: 16px;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    padding-top: var(--nav-h);
  }

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

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

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

  .wrap {
    width: min(1200px, calc(100% - var(--side)));
    margin-inline: auto;
  }

  section {
    padding-block: clamp(64px, 7vw, 96px);
  }

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

  ::selection {
    background: rgba(224, 163, 44, 0.28);
  }

  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--orange);
    font-size: 13px;
    letter-spacing: 0.08em;
    font-weight: 700;
    text-transform: uppercase;
  }

  .eyebrow::before {
    content: "";
    width: 28px;
    height: 2px;
    background: var(--orange);
    display: inline-block;
  }

  .section-title {
    font-size: clamp(26px, 3vw, 38px);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--ink);
  }

  .section-lead {
    color: var(--gray);
    max-width: 720px;
    margin-top: 16px;
    font-size: 16px;
    line-height: 1.8;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 48px;
    padding: 0 22px;
    border-radius: 4px;
    font-weight: 700;
    font-size: 15px;
    border: 1px solid transparent;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease, color 0.2s ease;
    white-space: nowrap;
  }

  .btn:hover {
    transform: translateY(-1px);
  }

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

  .btn:focus-visible {
    outline: 2px solid rgba(224, 163, 44, 0.5);
    outline-offset: 3px;
  }

  .btn-gold {
    background: var(--accent);
    color: #1C1E1A;
    box-shadow: 4px 4px 0 rgba(28, 30, 26, 0.12);
  }

  .btn-gold:hover {
    background: #C98B1C;
    box-shadow: 6px 6px 0 rgba(28, 30, 26, 0.14);
    color: #111;
  }

  .btn-ghost-light {
    background: transparent;
    border-color: rgba(255, 255, 255, 0.72);
    color: #fff;
  }

  .btn-ghost-light:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
  }

  .btn-outline-dark {
    background: transparent;
    border-color: rgba(28, 30, 26, 0.38);
    color: var(--ink);
  }

  .btn-outline-dark:hover {
    background: rgba(224, 163, 44, 0.12);
    border-color: var(--ink);
  }

  .btn-sm {
    min-height: 40px;
    padding: 0 16px;
    font-size: 14px;
  }

  .badge {
    display: inline-block;
    background: rgba(31, 77, 64, 0.12);
    color: var(--brand);
    font-size: 13px;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 2px;
    line-height: 1.4;
  }

  .tag-orange {
    background: rgba(198, 90, 46, 0.1);
    color: var(--orange);
    border: 1px solid rgba(198, 90, 46, 0.2);
  }

  /* 顶部导航：分屏与首屏视觉联动 */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-h);
    z-index: 60;
    background: linear-gradient(90deg, var(--paper) 0%, var(--paper) calc(50% + 24px), var(--brand-deep) calc(50% + 24px), var(--brand-deep) 100%);
    transition: box-shadow 0.25s ease;
  }

  .site-header.scrolled {
    box-shadow: 0 4px 18px rgba(23, 54, 46, 0.1);
  }

  .header-inner {
    height: var(--nav-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
  }

  .logo {
    display: inline-flex;
    align-items: baseline;
    gap: 8px;
    font-size: 22px;
    font-weight: 900;
    letter-spacing: -0.01em;
    color: var(--ink);
    white-space: nowrap;
    flex-shrink: 0;
  }

  .logo b {
    color: var(--brand-deep);
    font-weight: 900;
  }

  .logo .logo-dot {
    color: var(--orange);
    display: inline-block;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--orange);
    margin-left: 1px;
  }

  .site-nav {
    display: flex;
    align-items: center;
    gap: 30px;
    margin-left: 40px;
  }

  .nav-link {
    position: relative;
    display: inline-block;
    line-height: var(--nav-h);
    font-size: 15px;
    font-weight: 600;
    color: var(--ink);
    transition: color 0.2s ease;
  }

  .nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    right: 100%;
    bottom: 10px;
    height: 2px;
    background: var(--brand);
    transition: right 0.25s ease;
  }

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

  .nav-link:hover::after {
    right: 0;
  }

  .nav-link.active {
    color: var(--brand);
    font-weight: 800;
  }

  .nav-link.active::after {
    right: 0;
    background: var(--orange);
  }

  .header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    margin-left: auto;
  }

  .header-actions .btn {
    min-height: 40px;
  }

  .menu-toggle {
    display: none;
    background: transparent;
    border: 1px solid rgba(28, 30, 26, 0.16);
    border-radius: 4px;
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--ink);
  }

  .mobile-menu {
    display: block;
    position: fixed;
    z-index: 55;
    top: var(--nav-h);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--paper);
    padding: 24px 24px 40px;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.25s ease, opacity 0.25s ease, visibility 0.25s ease;
    overflow-y: auto;
  }

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

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

  .mobile-nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 52px;
    font-size: 17px;
    font-weight: 700;
    border-bottom: 1px solid rgba(23, 54, 46, 0.1);
    color: var(--ink);
  }

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

  /* Hero 首屏 */
  .hero {
    position: relative;
    background: var(--paper);
    overflow: hidden;
    padding-top: clamp(56px, 8vh, 104px);
    padding-bottom: clamp(56px, 7vh, 96px);
    min-height: max(540px, calc(100svh - var(--nav-h)));
    display: flex;
    align-items: center;
  }

  .hero-fill {
    position: absolute;
    top: 0;
    bottom: 0;
    left: calc(50% + 24px);
    right: 0;
    background: var(--brand-deep);
    z-index: 0;
    pointer-events: none;
  }

  .hero-grid {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    align-items: center;
    gap: clamp(32px, 5vw, 72px);
  }

  .hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 700;
    color: var(--brand);
    letter-spacing: 0.08em;
    background: rgba(31, 77, 64, 0.08);
    border-radius: 999px;
    padding: 5px 14px;
  }

  .hero-eyebrow span {
    color: var(--orange);
  }

  .hero-title {
    font-size: clamp(34px, 5.4vw, 68px);
    line-height: 1.15;
    letter-spacing: -0.03em;
    font-weight: 900;
    color: var(--ink);
    margin-top: 22px;
    max-width: 620px;
  }

  .hero-sub {
    margin-top: 25px;
    max-width: 570px;
    color: var(--gray);
    font-size: clamp(16px, 1.4vw, 18px);
    line-height: 1.8;
  }

  .hero-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 36px;
  }

  .hero-note {
    margin-top: 22px;
    font-size: 14px;
    color: var(--gray);
    display: flex;
    align-items: center;
    gap: 6px;
    line-height: 1.6;
    max-width: 520px;
  }

  .hero-note::before {
    content: "";
    width: 24px;
    height: 1px;
    background: var(--line);
    display: inline-block;
    flex-shrink: 0;
  }

  .hero-media {
    position: relative;
    background: var(--brand-deep);
    border-radius: 6px;
    min-height: 460px;
    overflow: hidden;
    box-shadow: 14px 14px 0 rgba(23, 54, 46, 0.26);
  }

  .hero-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    inset: 0;
    opacity: 0.84;
  }

  .hero-caption {
    position: absolute;
    left: 24px;
    right: 24px;
    bottom: 20px;
    color: #fff;
  }

  .hero-caption strong {
    display: block;
    font-size: 20px;
    font-weight: 800;
    line-height: 1.35;
  }

  .hero-caption span {
    display: inline-block;
    margin-top: 6px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.72);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(4px);
    padding: 3px 10px;
    border-radius: 3px;
  }

  /* 特点卡 */
  .feature-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 44px;
  }

  .feature-card {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    padding: 30px 26px 28px;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  }

  .feature-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--brand);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
  }

  .feature-card:hover {
    transform: translateY(-3px);
    border-color: rgba(31, 77, 64, 0.45);
    box-shadow: var(--shadow-lift);
  }

  .feature-card:hover::before {
    transform: scaleX(1);
  }

  .feature-num {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    font-weight: 800;
    color: var(--brand);
    letter-spacing: 0.04em;
    font-variant-numeric: tabular-nums;
  }

  .feature-num i {
    display: inline-block;
    width: 24px;
    height: 1px;
    background: var(--line);
    font-style: normal;
  }

  .feature-card h3 {
    margin-top: 28px;
    font-size: 21px;
    font-weight: 800;
    color: var(--ink);
  }

  .feature-card p {
    margin-top: 12px;
    color: var(--gray);
    font-size: 15px;
    line-height: 1.75;
  }

  /* 场景深色区 */
  .scenario-section {
    background: var(--brand-deep);
    color: #f7f3ea;
  }

  .scenario-grid {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(32px, 5vw, 76px);
    align-items: center;
  }

  .scenario-title {
    color: #fff;
  }

  .scenario-lead {
    color: rgba(255, 255, 255, 0.68);
  }

  .scenario-visual {
    position: relative;
    border-radius: 6px;
    overflow: hidden;
    margin-top: 30px;
    box-shadow: 10px 10px 0 rgba(224, 163, 44, 0.08);
  }

  .scenario-visual img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
  }

  .scenario-visual span {
    display: block;
    position: absolute;
    inset: auto 16px 16px 16px;
    font-size: 12px;
    letter-spacing: 0.08em;
    text-align: right;
    color: rgba(255, 255, 255, 0.66);
    background: rgba(23, 54, 46, 0.62);
    padding: 5px 10px;
    border-radius: 3px;
  }

  .process-steps {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px 32px;
  }

  .step-card {
    display: flex;
    gap: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.16);
    padding-top: 16px;
  }

  .step-index {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(224, 163, 44, 0.18);
    border: 1px solid rgba(224, 163, 44, 0.4);
    color: var(--accent);
    font-size: 14px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    font-variant-numeric: tabular-nums;
  }

  .step-card h3 {
    color: #fff;
    font-size: 17px;
    font-weight: 800;
    line-height: 1.4;
  }

  .step-card p {
    color: rgba(255, 255, 255, 0.58);
    font-size: 14px;
    line-height: 1.7;
    margin-top: 4px;
  }

  /* 场景与认同 */
  .recognize-block {
    background: var(--paper);
  }

  .recognize-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 48px;
    align-items: center;
  }

  .recognize-quote {
    border-left: 3px solid var(--accent);
    background: var(--surface);
    border-radius: 4px;
    padding: 24px 26px;
    color: var(--gray);
    font-size: 15px;
    line-height: 1.85;
    box-shadow: var(--shadow-card);
  }

  .tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 20px;
  }

  .scene-tag {
    display: inline-block;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 7px 17px;
    font-size: 14px;
    font-weight: 600;
    color: var(--ink);
    transition: all 0.2s ease;
  }

  .scene-tag:hover {
    border-color: var(--brand);
    color: var(--brand);
    background: rgba(31, 77, 64, 0.07);
    transform: translateY(-1px);
    box-shadow: 0 4px 0 rgba(23, 54, 46, 0.08);
  }

  .recognize-note {
    margin-top: 22px;
    color: var(--gray);
    font-size: 13px;
    line-height: 1.7;
  }

  /* 最新动态 CMS */
  .news-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 30px;
    flex-wrap: wrap;
  }

  .news-card {
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    padding: 26px 24px;
    min-height: 240px;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  }

  .news-card:hover {
    transform: translateY(-3px);
    border-color: rgba(31, 77, 64, 0.5);
    box-shadow: 6px 6px 0 rgba(28, 30, 26, 0.08);
  }

  .news-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
  }

  .news-card h3 {
    font-size: 19px;
    line-height: 1.45;
    font-weight: 800;
    color: var(--ink);
  }

  .news-card h3 a:hover {
    color: var(--brand);
  }

  .news-card p {
    margin-top: 12px;
    color: var(--gray);
    font-size: 14px;
    line-height: 1.75;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .news-date {
    font-size: 13px;
    color: var(--gray);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
  }

  .news-link {
    margin-top: auto;
    padding-top: 18px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--brand);
    font-size: 14px;
    font-weight: 700;
  }

  .news-link span {
    transition: transform 0.2s ease;
  }

  .news-card:hover .news-link span {
    transform: translateX(4px);
  }

  .empty-state {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    width: 100%;
    padding: 34px 20px;
    border: 2px dashed var(--line);
    border-radius: 6px;
    color: var(--gray);
    background: rgba(255, 255, 255, 0.3);
  }

  .empty-state a {
    color: var(--brand);
    font-weight: 700;
    border-bottom: 1px solid rgba(31, 77, 64, 0.25);
    margin-left: 8px;
  }

  /* FAQ */
  .faq-wrap {
    max-width: 860px;
  }

  .faq-head {
    margin-bottom: 34px;
  }

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

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

  .faq-row summary {
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    padding: 22px 0;
    cursor: pointer;
    font-size: 17px;
    font-weight: 700;
    line-height: 1.5;
    color: var(--ink);
    transition: color 0.2s ease;
  }

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

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

  .faq-icon {
    position: relative;
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 1px solid var(--line);
    transition: transform 0.25s ease, border-color 0.2s ease;
  }

  .faq-icon::before,
  .faq-icon::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    width: 10px;
    height: 1.5px;
    background: var(--brand);
    transform: translate(-50%, -50%);
  }

  .faq-icon::after {
    transform: translate(-50%, -50%) rotate(90deg);
  }

  .faq-row[open] .faq-icon {
    transform: rotate(135deg);
    border-color: var(--brand);
  }

  .faq-row .answer {
    padding: 0 0 26px 0;
    color: var(--gray);
    font-size: 15px;
    line-height: 1.85;
    max-width: 720px;
  }

  /* 底部 CTA */
  .cta-band {
    background: var(--brand-deep);
    color: #fff;
    position: relative;
    overflow: hidden;
  }

  .cta-band::before {
    content: "";
    position: absolute;
    top: -80px;
    right: -120px;
    width: 380px;
    height: 380px;
    background: radial-gradient(circle, rgba(224, 163, 44, 0.25), transparent 70%);
    pointer-events: none;
  }

  .cta-shell {
    max-width: 760px;
    margin-inline: auto;
    text-align: center;
  }

  .cta-shell .section-title {
    color: #fff;
  }

  .cta-shell p {
    color: rgba(255, 255, 255, 0.66);
    margin-top: 18px;
  }

  .cta-actions {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 34px;
  }

  .cta-safe-note {
    margin-top: 22px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
  }

  /* 页脚 */
  .site-footer {
    background: #111F1B;
    color: rgba(255, 255, 255, 0.7);
  }

  .footer-main {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.6fr;
    gap: 36px;
    padding-top: 64px;
    padding-bottom: 48px;
  }

  .footer-brand {
    max-width: 320px;
  }

  .footer-brand .logo {
    color: #fff;
    font-size: 22px;
  }

  .footer-brand .logo b {
    color: var(--accent);
  }

  .footer-brand p {
    margin-top: 16px;
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.55);
  }

  .footer-h4 {
    color: #fff;
    font-size: 15px;
    font-weight: 800;
    margin-bottom: 16px;
  }

  .footer-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 14px;
  }

  .footer-links a {
    width: fit-content;
    color: rgba(255, 255, 255, 0.68);
    transition: color 0.2s ease;
  }

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

  .footer-contact {
    font-size: 14px;
    line-height: 1.85;
  }

  .footer-contact .footer-h4 {
    margin-bottom: 12px;
  }

  .footer-copy {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    padding: 18px 0;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.42);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
  }

  /* 固定转化条 */
  .fixed-bar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 45;
    background: var(--paper);
    border-top: 1px solid var(--line);
    padding: 10px 0 10px;
    transform: translateY(110%);
    transition: transform 0.3s ease;
  }

  .fixed-bar.visible {
    transform: translateY(0);
  }

  .fixed-bar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
  }

  .fixed-bar-text {
    font-size: 14px;
    color: var(--ink);
    line-height: 1.5;
  }

  .fixed-bar-text strong {
    color: var(--brand);
    font-weight: 800;
  }

  /* 表单按钮无默认 */
  .btn:disabled {
    pointer-events: none;
    opacity: 0.55;
  }

  @media (max-width: 1180px) {
    :root {
      --side: 44px;
    }
  }

  @media (max-width: 1023px) {
    .site-header {
      background: var(--paper);
      border-bottom: 1px solid var(--line);
    }

    .site-nav,
    .header-actions .btn {
      display: none;
    }

    .menu-toggle {
      display: flex;
    }

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

    .hero-fill {
      display: none;
    }

    .hero-grid {
      grid-template-columns: 1fr;
      gap: 42px;
    }

    .hero-media {
      min-height: 340px;
      border-radius: 6px;
    }

    .feature-list {
      grid-template-columns: 1fr 1fr;
    }

    .scenario-grid {
      grid-template-columns: 1fr;
      gap: 40px;
    }

    .recognize-grid {
      grid-template-columns: 1fr;
      gap: 28px;
    }

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

  @media (max-width: 767px) {
    :root {
      --side: 40px;
    }

    .header-actions {
      gap: 0;
    }

    .logo {
      font-size: 20px;
    }

    .feature-list {
      grid-template-columns: 1fr;
    }

    .hero-title {
      font-size: clamp(30px, 8.5vw, 42px);
    }

    .hero-sub {
      font-size: 16px;
    }

    .hero-actions {
      gap: 10px;
    }

    .hero-actions .btn {
      width: 100%;
      margin-bottom: 2px;
    }

    .hero-note {
      font-size: 13px;
    }

    .process-steps {
      grid-template-columns: 1fr;
    }

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

    .footer-main {
      grid-template-columns: 1fr;
      gap: 28px;
      padding-top: 48px;
    }

    .footer-copy {
      flex-direction: column;
      align-items: flex-start;
      padding-bottom: 30px;
    }

    .fixed-bar-text span {
      display: none;
    }

    .fixed-bar-text {
      font-size: 13px;
      line-height: 1.4;
    }

    .fixed-bar .btn {
      min-height: 38px;
      padding: 0 12px;
      font-size: 14px;
    }
  }

  @media (max-width: 480px) {
    .cta-actions .btn {
      width: 100%;
    }

    .hero-media {
      min-height: 280px;
    }

    .scenario-visual img {
      aspect-ratio: 4 / 3;
    }

    .blog-card {
      padding: 20px;
    }
  }

/* roulang page: article */
:root {
            --color-paper: #F4F0E8;
            --color-surface: #FFFFFF;
            --color-brand: #1F4D40;
            --color-brand-deep: #17362E;
            --color-ink: #1C1E1A;
            --color-gray: #5F625B;
            --color-line: #D9D2C3;
            --color-accent: #E0A32C;
            --color-orange: #C65A2E;
            --radius-sm: 2px;
            --radius-md: 4px;
            --radius-lg: 6px;
            --card-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
            --card-shadow-lift: 0 10px 28px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.05);
            --container-max: 1200px;
            --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--color-paper);
            color: var(--color-ink);
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            padding-bottom: 64px;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }

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

        h1,
        h2,
        h3,
        h4 {
            margin: 0 0 .45em;
            line-height: 1.25;
            font-weight: 800;
        }

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

        button {
            cursor: pointer;
            border: 0;
            background: none;
        }

        :focus-visible {
            outline: 2px solid rgba(224, 163, 44, 0.5);
            outline-offset: 3px;
        }

        .wrap {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 32px;
            padding-right: 32px;
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(247, 244, 238, 0.94);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-line);
        }

        .header-inner {
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
        }

        .header-left {
            display: flex;
            align-items: center;
            gap: 26px;
            min-width: 0;
        }

        .logo {
            display: inline-flex;
            align-items: baseline;
            font-size: 22px;
            font-weight: 900;
            letter-spacing: -0.02em;
            color: var(--color-ink);
            white-space: nowrap;
        }

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

        .logo-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            margin-left: 5px;
            border-radius: 2px;
            background: var(--color-accent);
        }

        .site-nav {
            display: flex;
            align-items: center;
            gap: 2px;
        }

        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 15px;
            line-height: 1.4;
            font-weight: 500;
            color: #2e302c;
            border-radius: 3px;
            transition: color .2s ease, background .2s ease;
        }

        .nav-link:hover {
            color: var(--color-brand);
            background: rgba(31, 77, 64, 0.08);
        }

        .nav-link.active {
            color: var(--color-brand);
            font-weight: 700;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 1px;
            height: 2px;
            border-radius: 2px;
            background: var(--color-orange);
        }

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

        .header-tel {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 38px;
            padding: 0 16px;
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            background: var(--color-brand);
            border-radius: 4px;
            transition: background .2s ease, transform .2s ease;
        }

        .header-tel:hover {
            background: var(--color-orange);
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            width: 42px;
            height: 42px;
            gap: 5px;
            border-radius: 4px;
            padding: 0 10px;
        }

        .nav-toggle span {
            display: block;
            height: 2px;
            background: var(--color-ink);
            border-radius: 2px;
            transition: transform .25s ease, opacity .25s ease;
        }

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

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

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

        /* ===== Article Page ===== */
        .article-page {
            padding: 34px 0 90px;
        }

        .article-breadcrumb {
            max-width: 980px;
            margin: 0 auto 22px;
            font-size: 14px;
            color: var(--color-gray);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .article-breadcrumb a {
            color: var(--color-brand);
        }

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

        .article-breadcrumb .current {
            color: var(--color-gray);
        }

        .article-frame {
            max-width: 980px;
            margin: 0 auto;
        }

        .article-card {
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: 8px;
            box-shadow: var(--card-shadow);
            padding: clamp(28px, 5vw, 62px);
        }

        .article-head {
            padding-bottom: 28px;
            margin-bottom: 32px;
            border-bottom: 1px solid var(--color-line);
        }

        .article-tag {
            display: inline-flex;
            align-items: center;
            height: 28px;
            padding: 0 12px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-orange);
            background: rgba(198, 90, 46, 0.12);
            border-radius: 3px;
            letter-spacing: .04em;
        }

        .article-title {
            margin-top: 14px;
            margin-bottom: 10px;
            font-size: clamp(28px, 4vw, 44px);
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -0.02em;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--color-gray);
        }

        .meta-sep {
            width: 4px;
            height: 4px;
            background: var(--color-line);
            border-radius: 50%;
        }

        .article-body {
            max-width: 720px;
            margin: 0 auto;
            font-size: 17px;
            line-height: 1.9;
            overflow-wrap: break-word;
            word-wrap: break-word;
        }

        .article-body > *:first-child {
            margin-top: 0;
        }

        .article-body p {
            margin: 0 0 28px;
        }

        .article-body h2 {
            margin: 44px 0 18px;
            font-size: 26px;
            font-weight: 800;
            line-height: 1.4;
        }

        .article-body h3 {
            margin: 36px 0 14px;
            font-size: 21px;
            font-weight: 700;
            line-height: 1.5;
        }

        .article-body h2::before {
            content: '';
            display: inline-block;
            width: 4px;
            height: 22px;
            margin-right: 10px;
            background: var(--color-brand);
            border-radius: 2px;
            vertical-align: -3px;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 28px;
            padding-left: 22px;
        }

        .article-body li {
            margin-bottom: 10px;
        }

        .article-body img {
            margin: 32px auto;
            border-radius: 6px;
            box-shadow: var(--card-shadow);
        }

        .article-body figure {
            margin: 32px 0;
        }

        .article-body figcaption {
            margin-top: 6px;
            font-size: 14px;
            color: var(--color-gray);
            text-align: center;
        }

        .article-body blockquote {
            margin: 28px 0;
            padding: 18px 20px;
            border-left: 3px solid var(--color-brand);
            background: #F4F0E8;
            border-radius: 0 4px 4px 0;
            color: #34362f;
        }

        .article-body blockquote p:last-child {
            margin-bottom: 0;
        }

        .article-body a {
            color: var(--color-brand);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body a:hover {
            color: var(--color-orange);
        }

        .article-body code,
        .article-body pre {
            max-width: 100%;
            overflow-x: auto;
            font-size: 0.9em;
        }

        /* 文末资料片 */
        .afternote {
            max-width: 720px;
            margin: 48px auto 8px;
            background: var(--color-brand-deep);
            border-radius: 8px;
            overflow: hidden;
            display: flex;
            align-items: center;
            gap: 24px;
            padding: 24px;
            color: #fff;
        }

        .afternote img {
            width: 168px;
            height: 126px;
            flex-shrink: 0;
            object-fit: cover;
            border-radius: 4px;
        }

        .afternote .eyebrow {
            display: block;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: .12em;
            color: #E0A32C;
            text-transform: uppercase;
        }

        .afternote h3 {
            font-size: 20px;
            margin: 6px 0 6px;
            color: #fff;
            line-height: 1.4;
        }

        .afternote p {
            margin: 0 0 14px;
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.78);
        }

        .afternote-links {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .mini-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 36px;
            padding: 0 14px;
            font-size: 14px;
            font-weight: 700;
            border-radius: 4px;
            background: var(--color-accent);
            color: #1C1E1A;
            transition: background .2s ease, transform .2s ease;
        }

        .mini-btn:hover {
            background: var(--color-orange);
            color: #fff;
            transform: translateY(-1px);
        }

        .mini-btn.outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.5);
            color: #fff;
        }

        .mini-btn.outline:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }

        /* 相关阅读 */
        .related-section {
            max-width: 980px;
            margin: 40px auto 0;
        }

        .related-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 20px;
        }

        .related-title {
            font-size: clamp(22px, 3vw, 30px);
            font-weight: 800;
            margin-bottom: 4px;
        }

        .related-sub {
            color: var(--color-gray);
            font-size: 14px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }

        .rel-card {
            display: flex;
            flex-direction: column;
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: 6px;
            padding: 22px;
            box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
            transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
        }

        .rel-card:hover {
            transform: translateY(-2px);
            border-color: #BDB6A6;
            box-shadow: var(--card-shadow-lift);
        }

        .rel-tag-c {
            display: inline-flex;
            width: fit-content;
            height: 24px;
            align-items: center;
            padding: 0 10px;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-brand);
            background: rgba(31, 77, 64, 0.1);
            border-radius: 3px;
            margin-bottom: 12px;
        }

        .rel-h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 8px;
        }

        .rel-h3 a {
            color: var(--color-ink);
        }

        .rel-h3 a:hover {
            color: var(--color-brand);
        }

        .rel-excerpt {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-gray);
            margin-bottom: 16px;
            flex: 1;
        }

        .rel-date {
            font-size: 13px;
            color: #9a958c;
            font-variant-numeric: tabular-nums;
        }

        .rel-fallback {
            background: #FCFAF5;
            border: 1px dashed var(--color-line);
            border-radius: 6px;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            flex-wrap: wrap;
        }

        .rel-fallback p {
            margin: 0;
            color: var(--color-gray);
            font-size: 14px;
        }

        .rel-fallback a {
            color: var(--color-brand);
            font-weight: 700;
            border-bottom: 1px solid var(--color-brand);
            line-height: 1.7;
        }

        .rel-fallback a:hover {
            color: var(--color-orange);
            border-color: var(--color-orange);
        }

        /* 空文章 */
        .not-found {
            max-width: 720px;
            margin: 40px auto;
            text-align: center;
            background: var(--color-surface);
            border: 1px solid var(--color-line);
            border-radius: 8px;
            padding: 90px 32px;
            box-shadow: var(--card-shadow);
        }

        .not-found h1 {
            font-size: clamp(26px, 4vw, 38px);
            font-weight: 900;
        }

        .not-found p {
            color: var(--color-gray);
            margin: 0 0 28px;
            font-size: 16px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-brand-deep);
            color: rgba(255, 255, 255, 0.85);
            padding-top: 64px;
            border-top: 4px solid var(--color-accent);
        }

        .footer-main {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.3fr;
            gap: 42px;
            padding-bottom: 48px;
        }

        .footer-brand .logo {
            color: #fff;
            font-size: 24px;
            margin-bottom: 12px;
        }

        .footer-brand .logo b {
            color: #fff;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.62);
            margin: 0;
        }

        .footer-h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            letter-spacing: .04em;
            margin: 4px 0 16px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            padding: 3px 0;
        }

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

        .footer-contact p {
            color: rgba(255, 255, 255, 0.56);
            font-size: 13px;
            line-height: 1.7;
            margin: 0;
        }

        .footer-copy {
            border-top: 1px solid rgba(255, 255, 255, 0.14);
            padding: 20px 0 80px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== 底部固定条 ===== */
        .bottom-bar {
            position: fixed;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 50;
            background: rgba(247, 244, 238, 0.94);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-top: 1px solid var(--color-line);
            transform: translateY(110%);
            transition: transform .28s ease;
        }

        .bottom-bar.show {
            transform: translateY(0);
        }

        .bottom-inner {
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
        }

        .bottom-tip {
            font-size: 14px;
            color: var(--color-ink);
            line-height: 1.4;
        }

        .bottom-tip strong {
            color: var(--color-brand);
            font-weight: 800;
        }

        .bar-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 40px;
            padding: 0 16px;
            background: var(--color-brand);
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            border-radius: 4px;
            white-space: nowrap;
            transition: background .2s ease, transform .2s ease;
        }

        .bar-btn:hover {
            background: var(--color-orange);
            transform: translateY(-1px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-main {
                grid-template-columns: 1.4fr 1fr 1fr;
                gap: 32px;
            }

            .footer-contact {
                grid-column: span 3;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                padding-top: 16px;
            }

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

        @media (max-width: 768px) {
            body {
                padding-bottom: 56px;
            }

            .wrap {
                padding-left: 20px;
                padding-right: 20px;
            }

            .header-inner {
                height: 60px;
                gap: 12px;
            }

            .header-left {
                gap: 12px;
            }

            .site-nav {
                display: none;
                position: absolute;
                left: 0;
                right: 0;
                top: 60px;
                background: #FBF8F2;
                border-bottom: 1px solid var(--color-line);
                padding: 10px 20px 16px;
                flex-direction: column;
                align-items: stretch;
                gap: 2px;
            }

            .site-nav.open {
                display: flex;
            }

            .nav-link {
                display: block;
                padding: 12px 16px;
                border-radius: 4px;
            }

            .nav-link.active {
                background: rgba(31, 77, 64, 0.1);
            }

            .nav-link.active::after {
                display: none;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .header-actions .header-tel {
                height: 36px;
                padding: 0 12px;
                font-size: 13px;
            }

            .article-page {
                padding-top: 20px;
                padding-bottom: 60px;
            }

            .article-card {
                padding: 26px 20px;
            }

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

            .article-body {
                font-size: 16px;
                line-height: 1.9;
            }

            .afternote {
                flex-direction: column;
                align-items: flex-start;
                padding: 20px;
            }

            .afternote img {
                width: 100%;
                height: 180px;
            }

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

            .bottom-inner {
                height: 56px;
                min-width: 0;
            }

            .bottom-tip {
                font-size: 13px;
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
                flex: 1;
                min-width: 0;
            }

            .bottom-tip strong {
                font-size: 14px;
            }

            .bar-btn {
                flex-shrink: 0;
            }

            .footer-main {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }

            .footer-brand,
            .footer-contact {
                grid-column: span 2;
            }

            .footer-copy {
                padding-bottom: 64px;
                font-size: 12px;
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                min-width: 0;
            }

            .header-left .logo {
                font-size: 20px;
            }

            .header-actions .header-tel {
                display: none;
            }

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

            .footer-brand,
            .footer-contact {
                grid-column: span 1;
            }

            .article-frame {
                margin: 0;
            }

            .article-card {
                border-left: 0;
                border-right: 0;
            }

            .bottom-tip {
                max-width: 55%;
            }

            .bottom-tip strong {
                display: block;
            }
        }

/* roulang page: category1 */
:root {
            --paper: #F4F0E8;
            --surface: #FFFFFF;
            --brand: #1F4D40;
            --brand-deep: #17362E;
            --ink: #1C1E1A;
            --gray: #5F625B;
            --line: #D9D2C3;
            --accent: #E0A32C;
            --orange: #C65A2E;
            --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --radius-sm: 2px;
            --radius: 4px;
            --radius-md: 6px;
            --shadow-default: 0 1px 2px rgba(0, 0, 0, 0.06);
            --shadow-hover: 6px 6px 0 rgba(28, 30, 26, 0.08);
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            background: var(--paper);
            color: var(--ink);
            font-family: var(--font-sans);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font: inherit;
            border: none;
            background: none;
            cursor: pointer;
        }
        p,
        h1,
        h2,
        h3,
        h4 {
            margin: 0;
        }
        ul {
            margin: 0;
            padding: 0;
            list-style: none;
        }
        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }
        .wrap {
            max-width: 1200px;
            margin-inline: auto;
            padding-inline: 32px;
        }
        .section-block {
            padding-block: 88px;
        }
        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            letter-spacing: .12em;
            font-weight: 600;
            text-transform: uppercase;
            color: var(--orange);
        }
        .eyebrow::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--accent);
            display: inline-block;
        }
        .section-title {
            font-size: clamp(28px, 4vw, 38px);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-top: 12px;
        }
        .section-desc {
            max-width: 720px;
            color: var(--gray);
            font-size: 16px;
            margin-top: 16px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 48px;
            padding: 0 26px;
            border-radius: var(--radius);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: .01em;
            transition: background-color .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
            vertical-align: middle;
            white-space: nowrap;
            border: 1px solid transparent;
        }
        .btn-accent {
            background: var(--accent);
            color: #251d0c;
        }
        .btn-accent:hover {
            background: var(--orange);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-light {
            background: transparent;
            border-color: #d6b590;
            color: #f4ede1;
        }
        .btn-light:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fff;
            color: #fff;
        }
        .btn-brand {
            background: var(--brand);
            color: #fff;
        }
        .btn-brand:hover {
            background: var(--brand-deep);
            transform: translateY(-1px);
        }
        .btn-sm {
            min-height: 42px;
            padding: 0 18px;
            font-size: 14px;
        }

        /* Header */
        .site-header {
            position: relative;
            z-index: 50;
            height: 64px;
            background: linear-gradient(90deg, var(--paper) 0%, var(--paper) 50%, var(--brand-deep) 50%, var(--brand-deep) 100%);
            border-bottom: 1px solid rgba(23, 54, 46, .12);
        }
        .header-inner {
            position: relative;
            display: flex;
            align-items: center;
            height: 64px;
            gap: 35px;
        }
        .logo {
            font-size: 22px;
            font-weight: 900;
            letter-spacing: -.02em;
            line-height: 1;
            color: var(--ink);
            display: inline-flex;
            align-items: center;
        }
        .logo b {
            color: var(--brand);
            font-weight: 900;
        }
        .logo-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            margin-left: 5px;
            display: inline-block;
            margin-top: 3px;
        }
        .site-nav {
            display: flex;
            align-items: center;
            gap: 32px;
            height: 64px;
            margin-left: 8px;
        }
        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            height: 64px;
            font-size: 14px;
            font-weight: 500;
            color: var(--ink);
            letter-spacing: .02em;
            transition: color .16s ease;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--brand);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .18s ease;
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: var(--brand);
            font-weight: 700;
        }
        .header-cta {
            margin-left: auto;
        }
        .nav-toggle {
            display: none;
            margin-left: auto;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 4px;
            border: 1px solid var(--line);
            background: var(--surface);
            color: var(--ink);
        }

        /* Page hero split */
        .page-hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            background: linear-gradient(90deg, var(--paper) 0%, var(--paper) 50%, var(--brand-deep) 50%, var(--brand-deep) 100%);
            overflow: hidden;
        }
        .page-hero-grid {
            display: grid;
            grid-template-columns: 1fr .95fr;
            width: 100%;
            align-items: center;
        }
        .page-hero-copy {
            padding: 68px 48px 68px 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 24px;
            font-size: 13px;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--gray);
            transition: color .16s ease;
        }
        .breadcrumb a:hover {
            color: var(--brand);
        }
        .hero-title {
            font-size: clamp(38px, 5vw, 58px);
            font-weight: 900;
            line-height: 1.12;
            letter-spacing: -.025em;
            margin-top: 6px;
        }
        .hero-title small {
            display: block;
            color: var(--orange);
            font-size: .5em;
            font-weight: 700;
            margin-top: 12px;
            letter-spacing: .04em;
        }
        .hero-sub {
            color: var(--gray);
            font-size: 17px;
            max-width: 570px;
            margin-top: 22px;
            line-height: 1.9;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 30px;
        }
        .hero-note {
            font-size: 13px;
            color: #74776f;
            margin-top: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .hero-note svg {
            color: var(--brand);
        }
        .page-hero-media {
            position: relative;
            height: 300px;
            width: 100%;
            overflow: hidden;
            border-radius: 6px;
            box-shadow: 10px 10px 0 rgba(224, 163, 44, .12);
            background: #c7cbc2;
        }
        .page-hero-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .page-hero-highlight {
            position: absolute;
            left: 18px;
            bottom: 18px;
            background: rgba(23, 54, 46, .92);
            color: #fff;
            padding: 12px 16px;
            border-radius: 4px;
            font-size: 13px;
            line-height: 1.5;
            max-width: 280px;
            backdrop-filter: blur(4px);
        }
        .page-hero-highlight b {
            color: var(--accent);
        }

        /* Module grid */
        .module-section {
            background: #fff;
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 30px;
            margin-bottom: 44px;
        }
        .module-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .module-card {
            position: relative;
            background: #fbf9f3;
            border: 1px solid #e5ddce;
            border-radius: var(--radius);
            padding: 30px 24px 24px;
            transition: box-shadow .2s ease, transform .2s ease, border-color .2s ease;
            overflow: hidden;
        }
        .module-card::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            height: 3px;
            width: 100%;
            background: var(--brand);
            opacity: 0;
            transform: scaleX(.6);
            transition: opacity .2s ease, transform .2s ease;
        }
        .module-card:hover {
            border-color: var(--brand);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            background: #fff;
        }
        .module-card:hover::before {
            opacity: 1;
            transform: scaleX(1);
        }
        .module-index {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--brand);
            font-weight: 700;
            letter-spacing: .08em;
        }
        .module-index span {
            display: inline-block;
            width: 24px;
            height: 2px;
            background: var(--accent);
        }
        .module-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-top: 18px;
            color: var(--ink);
        }
        .module-card p {
            margin-top: 10px;
            font-size: 14px;
            color: var(--gray);
            line-height: 1.7;
        }

        /* Split contents */
        .work-section {
            background: var(--paper);
            position: relative;
        }
        .work-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 54px;
            align-items: center;
        }
        .work-copy .section-title {
            margin-top: 8px;
        }
        .work-copy .section-desc {
            margin-bottom: 28px;
        }
        .check-list {
            border-top: 1px solid var(--line);
        }
        .check-list li {
            display: grid;
            grid-template-columns: 120px 1fr;
            gap: 14px;
            padding: 18px 0;
            border-bottom: 1px solid var(--line);
            align-items: baseline;
        }
        .check-list b {
            font-size: 15px;
            font-weight: 700;
            color: var(--brand);
        }
        .check-list span {
            color: var(--gray);
            font-size: 15px;
            line-height: 1.6;
        }
        .media-stack {
            position: relative;
            display: grid;
            gap: 18px;
        }
        .media-stack .media-main {
            border-radius: 6px;
            overflow: hidden;
            box-shadow: var(--shadow-default);
            background: #d9d2c3;
            aspect-ratio: 16/10;
        }
        .media-main img,
        .media-sub img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .media-sub {
            display: grid;
            grid-template-columns: 1.3fr .8fr;
            gap: 18px;
        }
        .media-sub .media-main {
            aspect-ratio: 5/4;
        }
        .media-caption {
            font-size: 13px;
            color: var(--gray);
            padding-left: 4px;
        }

        /* process */
        .process-section {
            background: var(--brand-deep);
            color: #fff;
            position: relative;
        }
        .process-section .section-desc {
            color: rgba(255, 255, 255, .72);
        }
        .process-section .eyebrow {
            color: var(--accent);
        }
        .step-list {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 22px;
            margin-top: 44px;
        }
        .step-item {
            padding: 26px 20px;
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: 4px;
            transition: background-color .2s ease, border-color .2s ease;
            position: relative;
        }
        .step-item:hover {
            background: rgba(255, 255, 255, .1);
            border-color: rgba(224, 163, 44, .7);
        }
        .step-num {
            display: flex;
            align-items: center;
            gap: 8px;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--accent);
            color: #251d0c;
            font-weight: 800;
            font-size: 14px;
            justify-content: center;
            margin-bottom: 18px;
        }
        .step-item h3 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
        }
        .step-item p {
            font-size: 13px;
            color: rgba(255, 255, 255, .72);
            line-height: 1.65;
            margin-top: 8px;
        }

        /* scene */
        .scene-section {
            background: #fff;
        }
        .scene-topline {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: flex-end;
            gap: 24px;
            margin-bottom: 36px;
        }
        .tag-wall {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .scene-tag {
            display: inline-flex;
            align-items: center;
            background: var(--paper);
            color: var(--ink);
            border: 1px solid transparent;
            border-radius: 4px;
            height: 42px;
            padding: 0 18px;
            font-size: 14px;
            font-weight: 500;
            transition: background-color .16s ease, color .16s ease, border-color .16s ease, transform .16s ease;
        }
        .scene-tag:hover {
            background: var(--brand);
            color: #fff;
            border-color: var(--brand);
            transform: translateY(-2px);
        }
        .scene-note {
            margin-top: 34px;
            padding: 20px 24px;
            border-left: 4px solid var(--accent);
            background: var(--paper);
            border-radius: 4px;
            font-size: 16px;
            line-height: 1.8;
            color: #37372f;
            max-width: 920px;
        }

        /* materials */
        .asset-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .asset-card {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: 4px;
            padding: 32px 26px;
            transition: box-shadow .18s ease, transform .18s ease;
        }
        .asset-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .asset-card .icon {
            width: 42px;
            height: 42px;
            border-radius: 4px;
            background: rgba(31, 77, 64, .1);
            color: var(--brand);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .asset-card h3 {
            margin-top: 18px;
            font-size: 19px;
            font-weight: 700;
        }
        .asset-card p {
            font-size: 14px;
            color: var(--gray);
            margin-top: 10px;
            line-height: 1.7;
        }

        /* FAQ */
        .faq-section {
            background: var(--paper);
        }
        .faq-layout {
            display: grid;
            grid-template-columns: .78fr 1.22fr;
            gap: 48px;
            align-items: start;
        }
        .faq-intro p {
            color: var(--gray);
            margin-top: 18px;
            max-width: 340px;
        }
        .faq-cta {
            margin-top: 26px;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 10px;
        }
        .faq-cta .textlink {
            color: var(--brand);
            font-weight: 600;
            font-size: 15px;
            border-bottom: 1px solid var(--accent);
            padding-bottom: 2px;
        }
        .faq-list {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 6px;
            overflow: hidden;
        }
        .faq-item {
            border-bottom: 1px solid var(--line);
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-item summary {
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            line-height: 1.5;
            position: relative;
            transition: background-color .16s ease;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            background: rgba(244, 240, 232, .6);
        }
        .faq-item summary::after {
            content: '+';
            font-size: 24px;
            font-weight: 400;
            color: var(--brand);
            transition: transform .15s ease;
            flex: 0 0 auto;
        }
        .faq-item[open] summary::after {
            content: '×';
            color: var(--orange);
        }
        .faq-item[open] summary {
            border-bottom: 1px solid var(--line);
        }
        .faq-item .a-wrap {
            padding: 20px 24px 24px;
            color: var(--gray);
            font-size: 15px;
            line-height: 1.8;
        }

        /* cta band */
        .cta-band {
            background: var(--brand-deep);
            color: #fff;
            position: relative;
            overflow: hidden;
            border-top: 4px solid var(--accent);
        }
        .cta-band::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: .08;
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            padding-block: 76px;
        }
        .cta-inner h2 {
            font-size: clamp(28px, 4vw, 42px);
            font-weight: 800;
            line-height: 1.25;
            max-width: 780px;
            letter-spacing: -.02em;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, .76);
            max-width: 640px;
            margin-top: 16px;
            font-size: 15px;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
            margin-top: 34px;
        }

        /* Footer */
        .site-footer {
            background: #101c18;
            color: #d8d3c9;
            font-size: 14px;
            padding: 52px 0 64px;
        }
        .site-footer .wrap {
            display: flex;
            flex-direction: column;
            gap: 44px;
        }
        .footer-main {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 44px;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, .58);
            line-height: 1.8;
            margin-top: 16px;
            max-width: 330px;
            font-size: 13px;
        }
        .footer-brand .logo {
            color: #fff;
        }
        .footer-brand .logo b {
            color: var(--accent);
        }
        .footer-h4 {
            font-size: 15px;
            color: #fff;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, .66);
            transition: color .15s ease;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-contact p {
            font-size: 13px;
            color: rgba(255, 255, 255, .66);
            line-height: 1.7;
        }
        .footer-copy {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding-top: 22px;
            color: rgba(255, 255, 255, .4);
            font-size: 13px;
        }

        /* floating fixed bar */
        .fixbar {
            position: fixed;
            bottom: 18px;
            left: 50%;
            transform: translateX(-50%) translateY(80px);
            width: calc(100% - 32px);
            max-width: 1140px;
            background: rgba(244, 240, 232, .95);
            backdrop-filter: blur(8px);
            border: 1px solid var(--line);
            box-shadow: 0 8px 30px rgba(28, 30, 26, .12);
            border-radius: 4px;
            padding: 12px 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            opacity: 0;
            pointer-events: none;
            transition: opacity .25s ease, transform .25s ease;
            z-index: 60;
        }
        .fixbar.show {
            opacity: 1;
            pointer-events: auto;
            transform: translateX(-50%) translateY(0);
        }
        .fixbar-text {
            font-size: 14px;
            font-weight: 600;
            color: var(--ink);
        }
        .fixbar-text small {
            display: block;
            font-size: 12px;
            color: var(--gray);
            font-weight: 400;
        }

        @media (max-width: 1100px) {
            .page-hero-title {
                font-size: clamp(34px, 4.8vw, 52px);
            }
            .module-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .work-grid {
                gap: 34px;
            }
            .step-list {
                grid-template-columns: repeat(3, 1fr);
            }
            .asset-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 900px) {
            .site-header {
                background: var(--paper);
                height: auto;
            }
            .header-inner {
                flex-wrap: wrap;
                gap: 0;
                min-height: 64px;
                padding-top: 0;
                padding-bottom: 0;
            }
            .site-header .wrap {
                padding-inline: 20px;
            }
            .site-nav {
                display: none;
                order: 8;
                width: 100%;
                margin: 0;
                flex-direction: column;
                align-items: stretch;
                background: #fff;
                height: auto;
                border-top: 1px solid var(--line);
                padding: 8px 0 12px;
            }
            .nav-link {
                height: 48px;
                padding: 0 14px;
                border-radius: 4px;
            }
            .nav-link::after {
                display: none;
            }
            .nav-link.active,
            .nav-link:hover {
                background: rgba(31, 77, 64, .08);
                color: var(--brand);
            }
            .nav-toggle {
                display: inline-flex;
            }
            .header-cta {
                display: none;
            }
            .nav-open .site-nav {
                display: flex;
            }
            .page-hero-grid {
                gap: 0;
            }
            .page-hero-copy {
                padding: 52px 0 50px;
            }
            .page-hero-media {
                height: 240px;
            }
            .footer-main {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
            .faq-layout {
                grid-template-columns: 1fr;
                gap: 34px;
            }
            .fixbar {
                bottom: 10px;
                width: calc(100% - 20px);
            }
        }
        @media (max-width: 768px) {
            .section-block {
                padding-block: 60px;
            }
            .wrap {
                padding-inline: 20px;
            }
            .page-hero {
                background: var(--paper);
                display: block;
                min-height: 0;
            }
            .page-hero-grid {
                display: block;
            }
            .page-hero-copy {
                padding: 48px 0 30px;
            }
            .page-hero-media {
                height: 200px;
                margin-bottom: 28px;
            }
            .section-head {
                display: block;
                margin-bottom: 32px;
            }
            .module-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .asset-grid {
                grid-template-columns: 1fr;
            }
            .work-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .check-list li {
                grid-template-columns: 1fr;
                gap: 4px;
            }
            .step-list {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
                margin-top: 30px;
            }
            .step-item {
                padding: 20px 16px;
            }
            .media-sub {
                gap: 12px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .footer-main {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-copy {
                flex-direction: column;
            }
            .fixbar-text {
                font-size: 13px;
            }
            .fixbar-text small {
                display: none;
            }
            .fixbar .btn-sm {
                padding: 0 14px;
                min-height: 40px;
                font-size: 13px;
            }
            .faq-list {
                margin-inline: -4px;
            }
        }
        @media (max-width: 480px) {
            .logo {
                font-size: 19px;
            }
            .hero-title {
                font-size: 34px;
            }
            .hero-actions {
                gap: 10px;
            }
            .module-card {
                padding: 24px 20px;
            }
            .step-list {
                grid-template-columns: 1fr;
            }
            .media-sub {
                grid-template-columns: 1fr;
            }
            .footer-main {
                gap: 24px;
            }
            .fixbar {
                flex-direction: row;
                justify-content: space-between;
                gap: 10px;
                padding: 12px;
            }
        }

/* roulang page: category2 */
:root {
    --color-paper: #F4F0E8;
    --color-surface: #FFFFFF;
    --color-brand: #1F4D40;
    --color-brand-deep: #17362E;
    --color-ink: #1C1E1A;
    --color-gray: #5F625B;
    --color-line: #D9D2C3;
    --color-accent: #E0A32C;
    --color-orange: #C65A2E;
    --radius-sm: 2px;
    --radius-card: 4px;
    --radius-img: 6px;
    --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-hard: 6px 6px 0 rgba(28, 30, 26, 0.08);
  }
  
  *,
  *::before,
  *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  html {
    scroll-behavior: smooth;
  }
  
  body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    background-color: var(--color-paper);
    color: var(--color-ink);
    font-size: 16px;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
  }
  
  img,
  svg {
    display: block;
    max-width: 100%;
  }
  
  a {
    color: inherit;
    text-decoration: none;
  }
  
  button,
  input,
  textarea {
    font: inherit;
  }
  
  .wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 32px;
    padding-right: 32px;
  }
  
  .btn-primary,
  .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 48px;
    padding: 0 28px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 15px;
    transition: all .2s ease;
    white-space: nowrap;
  }
  
  .btn-primary {
    background: var(--color-accent);
    color: #1C1E1A;
    border: 1px solid var(--color-accent);
  }
  
  .btn-primary:hover {
    background: var(--color-orange);
    border-color: var(--color-orange);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(198, 90, 46, .2);
  }
  
  .btn-secondary {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, .7);
  }
  
  .btn-secondary:hover {
    background: rgba(255, 255, 255, .1);
    border-color: #fff;
    transform: translateY(-2px);
  }
  
  .site-nav {
    display: flex;
    align-items: center;
    gap: 36px;
  }
  
  .nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-ink);
    line-height: 64px;
    border-bottom: 2px solid transparent;
    transition: color .2s, border-color .2s;
  }
  
  .nav-link:hover {
    color: var(--color-brand);
  }
  
  .nav-link.active {
    color: var(--color-brand);
    border-bottom-color: var(--color-brand);
    font-weight: 600;
  }
  
  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--color-orange);
    font-weight: 600;
    margin-bottom: 12px;
  }
  
  .section-title {
    font-size: clamp(24px, 3vw, 36px);
    font-weight: 800;
    line-height: 1.25;
    color: var(--color-ink);
    letter-spacing: -0.01em;
  }
  
  .section-desc {
    font-size: 16px;
    color: var(--color-gray);
    line-height: 1.8;
  }
  
  @media (max-width: 767px) {
    .wrap {
      padding-left: 20px;
      padding-right: 20px;
    }
  
    .site-nav {
      gap: 20px;
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
      white-space: nowrap;
    }
  
    .nav-link {
      line-height: 64px;
      font-size: 14px;
    }
  
    .section-gap {
      padding: 64px 0;
    }
  }
  
  .img-placeholder {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 6px;
  }
  
  .image-frame {
    border-radius: 6px;
    background: var(--color-line);
    overflow: hidden;
    border: 1px solid #e5dfd2;
  }
  
  .numbered-list li {
    display: flex;
    gap: 16px;
  }
  
  .number-block {
    flex: 0 0 36px;
    height: 36px;
    border-radius: 2px;
    background: rgba(31, 77, 64, .08);
    color: var(--color-brand);
    font-weight: 700;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  
  details.faq-item {
    border-bottom: 1px solid var(--color-line);
  }
  
  details.faq-item summary::-webkit-details-marker {
    display: none;
  }
  
  details.faq-item summary {
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    padding: 18px 0;
    font-weight: 600;
    font-size: 16px;
  }
  
  details.faq-item .icon {
    flex: 0 0 24px;
    height: 24px;
    position: relative;
    border-radius: 50%;
    border: 1px solid var(--color-line);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background .2s, border-color .2s;
  }
  
  details.faq-item .icon::after {
    content: '+';
    font-weight: 400;
    font-size: 18px;
    line-height: 1;
    color: var(--color-gray);
    transition: content .2s;
  }
  
  details.faq-item[open] .icon {
    background: var(--color-brand);
    border-color: var(--color-brand);
  }
  
  details.faq-item[open] .icon::after {
    content: '×';
    color: #fff;
    font-size: 16px;
  }
  
  details.faq-item .faq-p {
    padding: 0 0 18px;
    color: var(--color-gray);
    font-size: 15px;
  }
  
  .hero-image-right {
    background: var(--color-brand);
    background-image: url('/assets/images/backpic/back-2.webp');
    background-size: cover;
    background-position: center;
    min-height: calc(100vh - 64px);
    position: relative;
  }
  
  .hero-image-right::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(23, 54, 46, .55);
  }
  
  @media (max-width: 1023px) {
    .hero-image-right {
      min-height: 320px;
    }
  }
  
  .stat-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }
  
  @media (max-width: 768px) {
    .stat-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }
  
  @media (max-width: 520px) {
    .stat-grid {
      grid-template-columns: 1fr;
    }
  }
  
  .process-step {
    position: relative;
    padding-left: 48px;
  }
  
  .process-step::before {
    content: '';
    position: absolute;
    left: 14px;
    top: 44px;
    bottom: -28px;
    width: 1px;
    background: rgba(255, 255, 255, .25);
  }
  
  .process-step:last-child::before {
    display: none;
  }
  
  @media (max-width: 767px) {
    .process-step {
      padding-left: 40px;
    }
  
    .process-step::before {
      left: 10px;
    }
  }
  
  .feature-card-hover {
    transition: transform .2s, box-shadow .2s, border-color .2s;
    border: 1px solid var(--color-line);
    background: var(--color-surface);
    border-radius: 4px;
  }
  
  .feature-card-hover:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hard);
    border-color: var(--color-brand);
  }
  
  .footer-links a {
    display: block;
    color: rgba(255, 255, 255, .72);
    font-size: 14px;
    padding: 6px 0;
    transition: color .2s;
  }
  
  .footer-links a:hover {
    color: var(--color-accent);
  }
  
  .mobile-nav-spacer {
    display: none;
  }
  
  @media (max-width: 767px) {
    .desktop-nav {
      display: none;
    }
  
    .mobile-nav-spacer {
      display: block;
    }
  }
  
  .card-label {
    display: inline-flex;
    align-items: center;
    background: rgba(31, 77, 64, .1);
    color: var(--color-brand);
    font-weight: 600;
    font-size: 13px;
    padding: 2px 10px;
    border-radius: 2px;
    line-height: 1.6;
  }