/* roulang page: index */
:root {
    --teal: #0F5C5F;
    --teal-bright: #1E9E93;
    --teal-dark: #147C74;
    --amber: #F0A35E;
    --page-bg: #F4F8F8;
    --soft-bg: #E8F0EF;
    --deep-bg: #12373A;
    --text-main: #1D3437;
    --text-muted: #5C7578;
    --text-weak: #93AAAC;
    --line: #DCE9E8;
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-btn: 8px;
    --shadow-card: 0 10px 30px rgba(9, 51, 56, 0.08);
    --shadow-hover: 0 18px 44px rgba(9, 51, 56, 0.13);
    --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: var(--font-cn);
    background: var(--page-bg);
    color: var(--text-main);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
  }

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

  a {
    color: inherit;
    text-decoration: none;
    transition: color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
  }

  button,
  input {
    font-family: inherit;
    border: 0;
  }

  button:focus-visible,
  a:focus-visible,
  input:focus-visible {
    outline: 2px solid var(--amber);
    outline-offset: 3px;
  }

  .container {
    width: 100%;
    max-width: 1200px;
    margin-inline: auto;
    padding-inline: 24px;
  }

  .section-pad {
    padding-block: 88px;
  }

  @media (max-width: 768px) {
    .section-pad {
      padding-block: 64px;
    }

    .container {
      padding-inline: 20px;
    }
  }

  /* 品牌 H 标 */
  .h-logo {
    position: relative;
    width: 30px;
    height: 30px;
    display: inline-block;
    flex: none;
  }

  .h-logo i {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 8px;
    background: var(--teal);
    border-radius: 2px;
    transition: background .2s;
  }

  .h-logo i:first-child {
    left: 2px;
  }

  .h-logo i:last-child {
    right: 2px;
  }

  .h-logo b {
    position: absolute;
    left: 2px;
    right: 2px;
    top: 50%;
    height: 8px;
    margin-top: -4px;
    background: var(--amber);
    border-radius: 2px;
  }

  .site-header {
    position: sticky;
    top: 0;
    z-index: 60;
    background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(220, 233, 232, .7);
    transition: background .3s, box-shadow .3s;
  }

  .site-header .header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 68px;
  }

  .brand-logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
  }

  .brand-logo:hover .h-logo i {
    background: var(--teal-bright);
  }

  .brand-name {
    font-size: 21px;
    font-weight: 800;
    letter-spacing: .02em;
    color: var(--teal);
    white-space: nowrap;
  }

  .header-search {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--soft-bg);
    border-radius: 999px;
    padding: 7px 12px 7px 16px;
    width: 280px;
    border: 1px solid transparent;
    transition: border-color .2s, background .2s;
  }

  .header-search:focus-within {
    border-color: var(--teal-bright);
    background: white;
    box-shadow: 0 0 0 3px rgba(30, 158, 147, .14);
  }

  .header-search input {
    width: 100%;
    background: transparent;
    font-size: 14px;
    color: var(--text-main);
    outline: none;
  }

  .header-search input::placeholder {
    color: var(--text-weak);
  }

  .header-search svg {
    width: 17px;
    height: 17px;
    stroke: var(--text-muted);
    flex: none;
  }

  .channel-nav {
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: none;
    border-top: 1px solid rgba(220, 233, 232, .5);
  }

  .channel-nav::-webkit-scrollbar {
    display: none;
  }

  .channel-nav-inner {
    display: flex;
    align-items: center;
    gap: 4px;
    min-height: 50px;
    white-space: nowrap;
    padding-bottom: 1px;
  }

  .channel-nav-inner a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 7px 14px;
    margin-right: 2px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-muted);
    border-radius: 999px;
    position: relative;
    line-height: 1.2;
  }

  .channel-nav-inner a:hover {
    background: rgba(30, 158, 147, .1);
    color: var(--teal);
  }

  .channel-nav-inner a.active {
    color: var(--teal);
    font-weight: 700;
    background: rgba(30, 158, 147, .08);
  }

  .channel-nav-inner a.active::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -4px;
    width: 24px;
    height: 3px;
    margin-left: -12px;
    background: var(--teal);
    border-radius: 99px;
  }

  .channel-nav-inner a.active::before {
    content: "";
    position: absolute;
    right: 12px;
    top: 8px;
    width: 5px;
    height: 5px;
    background: var(--amber);
    border-radius: 999px;
  }

  /* 按钮系统 */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: var(--radius-btn);
    font-weight: 600;
    min-height: 44px;
    padding: 0 20px;
    font-size: 15px;
    cursor: pointer;
    transition: background .2s, color .2s, transform .2s, box-shadow .2s, border-color .2s;
    transform: translateY(0);
    user-select: none;
  }

  .btn:active {
    transform: scale(.98);
  }

  .btn-primary {
    background: var(--teal-bright);
    color: #fff;
    border: 1px solid var(--teal-bright);
    box-shadow: 0 6px 18px rgba(30, 158, 147, .18);
  }

  .btn-primary:hover {
    background: var(--teal-dark);
    border-color: var(--teal-dark);
    box-shadow: 0 10px 24px rgba(30, 158, 147, .26);
    transform: translateY(-2px);
  }

  .btn-outline {
    background: rgba(255, 255, 255, .5);
    color: var(--teal);
    border: 1px solid var(--teal);
  }

  .btn-outline:hover {
    background: rgba(30, 158, 147, .1);
    border-color: var(--teal-dark);
    color: var(--teal-dark);
    transform: translateY(-2px);
  }

  .btn-light {
    background: #fff;
    color: var(--teal);
    border: 1px solid rgba(255, 255, 255, .12);
    box-shadow: 0 8px 30px rgba(0, 0, 0, .12);
  }

  .btn-light:hover {
    background: var(--amber);
    border-color: var(--amber);
    color: #fff;
    transform: translateY(-2px);
  }

  .btn-ghost {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, .8);
  }

  .btn-ghost:hover {
    background: rgba(255, 255, 255, .12);
    border-color: #fff;
    transform: translateY(-2px);
  }

  .btn-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--teal);
    font-weight: 600;
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 15px;
  }

  .btn-link:hover {
    color: var(--teal-dark);
    background: rgba(30, 158, 147, .08);
  }

  .btn-lg {
    min-height: 52px;
    padding: 0 28px;
    font-size: 16px;
  }

  @media (max-width: 520px) {
    .btn-lg {
      min-height: 46px;
      padding: 0 20px;
      font-size: 15px;
    }
  }

  /* Hero */
  .hero-section {
    position: relative;
    overflow: hidden;
    background: var(--page-bg);
  }

  .hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
  }

  .hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: .3;
  }

  .hero-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background:
      linear-gradient(90deg, rgba(244, 248, 248, .98) 0%, rgba(244, 248, 248, .94) 46%, rgba(244, 248, 248, .72) 100%);
  }

  .hero-grid {
    position: absolute;
    inset: 0;
    z-index: 1;
    opacity: .45;
    background-image:
      repeating-linear-gradient(to right, rgba(15, 92, 95, .05) 0 1px, transparent 1px 72px),
      repeating-linear-gradient(to bottom, rgba(15, 92, 95, .05) 0 1px, transparent 1px 72px);
    pointer-events: none;
  }

  .hero-inner {
    position: relative;
    z-index: 5;
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 48px;
    padding-block: 84px 96px;
  }

  .hero-copy {
    grid-column: span 7;
  }

  .hero-media-col {
    grid-column: span 5;
    display: flex;
    justify-content: flex-start;
    align-items: flex-end;
  }

  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .12em;
    color: var(--teal);
    margin-bottom: 18px;
    text-transform: uppercase;
  }

  .eyebrow-bar {
    width: 30px;
    height: 3px;
    background: var(--teal);
    border-radius: 999px;
    display: inline-block;
  }

  .hero-title {
    font-size: clamp(36px, 3vw, 50px);
    line-height: 1.24;
    color: var(--text-main);
    font-weight: 800;
    margin-bottom: 22px;
    letter-spacing: -.01em;
  }

  .hero-title .mark {
    color: var(--teal);
  }

  .hero-subtitle {
    font-size: 17px;
    color: var(--text-muted);
    line-height: 1.8;
    max-width: 540px;
    margin-bottom: 32px;
  }

  .hero-subtitle strong {
    color: var(--text-main);
    font-weight: 600;
  }

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

  .hero-trust {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    margin-top: 44px;
    padding-top: 22px;
    border-top: 1px dashed var(--line);
  }

  .hero-trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-muted);
  }

  .hero-trust-item .dot {
    width: 7px;
    height: 7px;
    border-radius: 999px;
    background: var(--teal-bright);
    display: inline-block;
  }

  .hero-visual-wrap {
    position: relative;
    width: 100%;
    padding-top: 126%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(9, 51, 56, .16);
  }

  .hero-visual-wrap img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .hero-stamp {
    position: absolute;
    top: 22px;
    left: 22px;
    background: var(--teal);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 6px;
    letter-spacing: .2em;
    z-index: 2;
    box-shadow: 0 8px 18px rgba(5, 45, 48, .22);
  }

  .hero-card-badge {
    position: absolute;
    right: 18px;
    bottom: 20px;
    background: rgba(255, 255, 255, .95);
    border: 1px solid var(--line);
    border-radius: 12px;
    backdrop-filter: blur(8px);
    box-shadow: 0 12px 34px rgba(9, 51, 56, .16);
    padding: 12px 18px;
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 3;
  }

  .hero-card-badge .check-icon {
    background: var(--teal-bright);
    color: #fff;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
  }

  .hero-card-badge strong {
    font-size: 14px;
    color: var(--text-main);
    display: block;
    line-height: 1.3;
  }

  .hero-card-badge span {
    font-size: 11px;
    color: var(--text-muted);
  }

  .h-watermark-line {
    position: relative;
    z-index: 4;
    height: 1px;
    background: var(--line);
    margin-top: -1px;
  }

  .h-watermark-line::before,
  .h-watermark-line::after {
    content: "";
    position: absolute;
    height: 4px;
    width: 120px;
    background: var(--teal);
    opacity: .3;
    top: -1px;
    border-radius: 99px;
  }

  .h-watermark-line::before {
    left: 0;
  }

  .h-watermark-line::after {
    right: 18%;
    width: 44px;
    opacity: .8;
  }

  @media (max-width: 1023px) {
    .hero-inner {
      grid-template-columns: 1fr;
      gap: 36px;
      padding-block: 56px 72px;
    }

    .hero-copy,
    .hero-media-col {
      grid-column: span 1;
    }

    .hero-media-col {
      justify-content: center;
      align-items: center;
    }

    .hero-visual-wrap {
      max-width: 560px;
      margin-inline: auto;
      padding-top: 116%;
    }
  }

  @media (max-width: 520px) {
    .hero-inner {
      padding-block: 44px 48px;
    }

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

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

    .hero-trust {
      gap: 14px;
    }

    .hero-visual-wrap {
      padding-top: 138%;
    }

    .hero-stamp {
      top: 16px;
      left: 16px;
    }
  }

  /* 通用 section 标题 */
  .section-kicker {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--teal);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .16em;
    margin-bottom: 10px;
  }

  .section-kicker::before {
    content: "";
    width: 26px;
    height: 2px;
    background: var(--amber);
    border-radius: 99px;
  }

  .section-title {
    font-size: clamp(27px, 2.6vw, 34px);
    line-height: 1.35;
    color: var(--text-main);
    font-weight: 800;
    margin-bottom: 14px;
  }

  .section-desc {
    font-size: 16px;
    color: var(--text-muted);
    max-width: 560px;
    line-height: 1.8;
  }

  .section-head-flex {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 44px;
  }

  @media (max-width: 640px) {
    .section-head-flex {
      align-items: flex-start;
      flex-direction: column;
      margin-bottom: 34px;
    }
  }

  /* 动态资讯卡片 */
  .card-cms {
    background: #fff;
    border-radius: var(--radius-md);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    transition: transform .25s ease, box-shadow .25s ease;
  }

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

  .card-cms-img {
    position: relative;
    overflow: hidden;
    aspect-ratio: 10 / 7;
    background: var(--soft-bg);
  }

  .card-cms-img.feature-img {
    aspect-ratio: 16 / 9;
  }

  .card-cms-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .35s ease;
  }

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

  .card-cms-body {
    padding: 26px;
  }

  .card-cms-body.compact {
    padding: 22px;
  }

  .card-cms-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 12px;
  }

  .tag {
    display: inline-flex;
    align-items: center;
    background: var(--soft-bg);
    color: var(--teal);
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    padding: 3px 12px;
    line-height: 1.6;
    transition: background .2s, color .2s;
  }

  .tag-amber {
    background: rgba(240, 163, 94, .14);
    color: #a65f24;
  }

  .card-cms-date {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 13px;
    color: var(--text-weak);
  }

  .card-cms-title {
    font-size: 22px;
    line-height: 1.5;
    color: var(--text-main);
    font-weight: 700;
    margin-bottom: 10px;
  }

  .card-cms-title a:hover {
    color: var(--teal);
  }

  .card-cms-title.small {
    font-size: 17px;
    margin-bottom: 8px;
    line-height: 1.5;
    font-weight: 600;
  }

  .card-cms-desc {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 14px;
  }

  .card-cms-link {
    color: var(--teal);
    font-size: 14px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
  }

  .card-cms-link:hover {
    color: var(--teal-dark);
    gap: 8px;
  }

  .cms-empty {
    background: var(--soft-bg);
    border: 1px dashed var(--line);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 160px;
    color: var(--text-muted);
    font-size: 16px;
    letter-spacing: .08em;
  }

  /* 三步 */
  .steps-wrap {
    display: grid;
    grid-template-columns: 3fr 8fr;
    gap: 60px;
  }

  .steps-aside {
    padding-top: 18px;
  }

  .steps-aside .section-title {
    margin-bottom: 20px;
  }

  .steps-path {
    position: relative;
    padding-left: 24px;
  }

  .steps-path::before {
    content: "";
    position: absolute;
    left: 7px;
    top: 18px;
    bottom: 18px;
    width: 1px;
    background: repeating-linear-gradient(to bottom, var(--teal-bright) 0 8px, transparent 8px 16px);
  }

  .step-row {
    position: relative;
    padding: 4px 0 24px 40px;
  }

  .step-row:not(:last-child) {
    border-bottom: 1px dashed var(--line);
    margin-bottom: 24px;
  }

  .step-row::before {
    content: "";
    position: absolute;
    left: -20px;
    top: 4px;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: var(--teal-bright);
    border: 3px solid #fff;
    box-shadow: 0 0 0 2px rgba(30, 158, 147, .3);
  }

  .step-num {
    display: inline-block;
    font-size: 66px;
    font-weight: 800;
    line-height: 1;
    color: rgba(30, 158, 147, .18);
    margin-left: -6px;
    margin-bottom: 0;
  }

  .step-content {
    margin-top: 4px;
  }

  .step-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .step-desc {
    color: var(--text-muted);
    font-size: 15px;
    min-height: 48px;
    max-width: 560px;
  }

  @media (max-width: 900px) {
    .steps-wrap {
      grid-template-columns: 1fr;
      gap: 32px;
    }
  }

  @media (max-width: 520px) {
    .steps-path {
      padding-left: 12px;
    }

    .step-row {
      padding-left: 24px;
    }
  }

  /* 场景与信任 */
  .scene-list {
    border-top: 1px solid var(--line);
  }

  .scene-row {
    display: grid;
    grid-template-columns: 60px 1fr 40px;
    gap: 20px;
    align-items: center;
    background: #fff;
    border-radius: 14px;
    padding: 18px 22px;
    border: 1px solid var(--line);
    transition: transform .2s, box-shadow .2s;
    margin-bottom: 14px;
  }

  .scene-row:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 36px rgba(9, 51, 56, .1);
  }

  .scene-icon {
    width: 52px;
    height: 52px;
    background: var(--soft-bg);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--teal);
    font-size: 20px;
  }

  .scene-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 3px;
  }

  .scene-text {
    font-size: 14px;
    color: var(--text-muted);
  }

  .scene-arrow {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid var(--line);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--teal);
    font-size: 18px;
    transition: background .2s, color .2s, transform .2s;
  }

  .scene-row:hover .scene-arrow {
    background: rgba(30, 158, 147, .1);
    color: var(--teal-dark);
    transform: translateX(4px);
  }

  .stats-bar {
    background: var(--deep-bg);
    border-radius: 18px;
    padding: 40px 24px;
    color: #fff;
    margin-top: 20px;
    background-image:
      repeating-linear-gradient(to right, rgba(255, 255, 255, .04) 0 1px, transparent 1px 80px),
      repeating-linear-gradient(to bottom, rgba(255, 255, 255, .04) 0 1px, transparent 1px 80px);
    position: relative;
    overflow: hidden;
  }

  .stats-bar::after {
    content: "HTH";
    position: absolute;
    right: 20px;
    bottom: -30px;
    font-size: 108px;
    font-weight: 800;
    letter-spacing: .1em;
    color: rgba(255, 255, 255, .05);
    text-align: right;
    line-height: 1;
    pointer-events: none;
  }

  .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    position: relative;
    z-index: 2;
  }

  .stats-item {
    padding-left: 20px;
    border-left: 1px solid rgba(255, 255, 255, .18);
  }

  .stats-item:first-child {
    border-left: 0;
    padding-left: 0;
  }

  .stats-num {
    font-size: 30px;
    font-weight: 800;
    line-height: 1;
    display: block;
    margin-bottom: 8px;
    color: #fff;
  }

  .stats-label {
    font-size: 14px;
    color: rgba(255, 255, 255, .68);
    line-height: 1.5;
  }

  @media (max-width: 768px) {
    .scene-row {
      grid-template-columns: 48px 1fr 28px;
      padding: 14px 16px;
      gap: 12px;
    }

    .scene-icon {
      width: 44px;
      height: 44px;
    }

    .stats-grid {
      grid-template-columns: 1fr 1fr;
      gap: 26px;
    }

    .stats-item:nth-child(3) {
      border-left: 0;
      padding-left: 0;
    }

    .stats-item {
      margin-left: 0;
    }
  }

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

    .stats-item {
      border-left: 0;
      padding-left: 0;
    }
  }

  /* FAQ */
  .faq-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px 48px;
  }

  .faq-column {
    display: flex;
    flex-direction: column;
    gap: 18px;
  }

  .faq-item {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    box-shadow: 0 4px 14px rgba(9, 51, 56, .03);
    transition: box-shadow .2s, border-color .2s;
  }

  .faq-item:hover,
  .faq-item.open {
    border-color: rgba(30, 158, 147, .5);
    box-shadow: 0 12px 30px rgba(9, 51, 56, .1);
  }

  .faq-question {
    width: 100%;
    text-align: left;
    background: none;
    color: var(--text-main);
    font-size: 16px;
    font-weight: 600;
    line-height: 1.6;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 0;
  }

  .faq-question .faq-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--soft-bg);
    color: var(--teal);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 300;
    flex: none;
    transition: transform .25s ease, background .25s, color .25s;
  }

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

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease, margin .3s ease;
  }

  .faq-item.open .faq-answer {
    max-height: 360px;
    margin-top: 14px;
  }

  .faq-answer-inner {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.8;
    border-top: 1px dashed var(--line);
    padding-top: 14px;
  }

  @media (max-width: 900px) {
    .faq-layout {
      grid-template-columns: 1fr;
      gap: 18px;
    }
  }

  /* CTA */
  .cta-section {
    background: var(--deep-bg);
    color: #fff;
    position: relative;
    overflow: hidden;
    background-image:
      repeating-linear-gradient(to right, rgba(255, 255, 255, .045) 0 1px, transparent 1px 64px),
      repeating-linear-gradient(to bottom, rgba(255, 255, 255, .045) 0 1px, transparent 1px 64px);
  }

  .cta-section::before {
    content: "";
    position: absolute;
    top: 0;
    left: 8%;
    right: 8%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--amber) 20%, var(--amber) 80%, transparent);
  }

  .cta-section::after {
    content: "H";
    position: absolute;
    right: -10px;
    bottom: -90px;
    font-size: 260px;
    font-weight: 800;
    color: rgba(255, 255, 255, .05);
    line-height: 1;
    pointer-events: none;
  }

  .cta-content {
    text-align: center;
    padding: 96px 20px;
    max-width: 700px;
    margin: auto;
    position: relative;
    z-index: 2;
  }

  .cta-content h2 {
    font-size: clamp(27px, 3vw, 38px);
    color: #fff;
    font-weight: 800;
    line-height: 1.4;
    margin-bottom: 16px;
  }

  .cta-content p {
    font-size: 16px;
    color: rgba(255, 255, 255, .72);
    margin-bottom: 34px;
    line-height: 1.9;
  }

  @media (max-width: 520px) {
    .cta-content {
      padding: 64px 16px;
    }
  }

  /* 页脚 */
  .site-footer {
    background: #102E31;
    color: rgba(255, 255, 255, .7);
    padding-top: 68px;
  }

  .site-footer a {
    color: rgba(255, 255, 255, .68);
    font-size: 14px;
    line-height: 2;
  }

  .site-footer a:hover {
    color: var(--amber);
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 3fr 2fr 3fr 4fr;
    gap: 48px;
    padding-bottom: 48px;
  }

  .footer-brand .brand-name {
    color: #fff;
  }

  .footer-brand .h-logo i {
    background: #fff;
  }

  .footer-desc {
    color: rgba(255, 255, 255, .6);
    font-size: 14px;
    margin-top: 18px;
    line-height: 1.8;
    max-width: 260px;
  }

  .footer-title {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
  }

  .footer-link-list a {
    display: block;
  }

  .footer-channel-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }

  .footer-channel-list a {
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .1);
    padding: 5px 13px;
    border-radius: 999px;
    font-size: 13px;
    line-height: 1.6;
    transition: background .2s, color .2s, border-color .2s;
  }

  .footer-channel-list a:hover {
    background: rgba(240, 163, 94, .12);
    border-color: rgba(240, 163, 94, .5);
    color: var(--amber);
  }

  .footer-contact p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, .68);
  }

  .footer-legal {
    border-top: 1px solid rgba(255, 255, 255, .16);
    margin-top: 24px;
    padding: 26px 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px;
    color: rgba(255, 255, 255, .45);
    font-size: 13px;
  }

  .footer-legal .legal-copy {
    font-weight: 500;
    color: rgba(255, 255, 255, .55);
  }

  .go-top {
    position: fixed;
    right: 22px;
    bottom: 22px;
    background: var(--teal);
    color: #fff;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    box-shadow: 0 12px 26px rgba(15, 92, 95, .28);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 40;
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s, background .2s, transform .2s;
    font-size: 20px;
  }

  .go-top.show {
    opacity: .9;
    pointer-events: auto;
  }

  .go-top:hover {
    background: var(--teal-dark);
    transform: translateY(-3px);
    opacity: 1;
  }

  @media (max-width: 1024px) {
    .footer-grid {
      grid-template-columns: 1fr 1fr;
    }
  }

  @media (max-width: 640px) {
    .footer-grid {
      grid-template-columns: 1fr;
      gap: 34px;
    }

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

  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      transition: none !important;
      animation: none !important;
      scroll-behavior: auto !important;
    }
  }

/* roulang page: category1 */
:root {
  --primary: #0F5C5F;
  --primary-soft: #E8F0EF;
  --action: #1E9E93;
  --action-dark: #147C74;
  --accent: #F0A35E;
  --bg: #F4F8F8;
  --ink: #1D3437;
  --ink-2: #5C7578;
  --ink-3: #93AAAC;
  --line: #DCE9E8;
  --dark: #12373A;
  --white: #ffffff;
  --radius-card: 14px;
  --radius-btn: 8px;
  --shadow-sm: 0 10px 30px rgba(9,51,56,0.08);
  --shadow-hover: 0 18px 44px rgba(9,51,56,0.13);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

body, h1, h2, h3, h4, p, ul, ol, figure, blockquote {
  margin: 0;
}

h1, h2, h3, h4 { font-weight: 700; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

button, input {
  font-family: inherit;
}

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

.container {
  width: 100%;
  max-width: 1244px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  padding: 88px 0;
}

.section-tight {
  padding: 56px 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 2px 16px rgba(9, 51, 56, 0.03);
}

.header-top {
  padding-top: 14px;
  padding-bottom: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.h-logo {
  position: relative;
  display: inline-block;
  width: 34px;
  height: 36px;
  flex-shrink: 0;
}

.h-logo i {
  position: absolute;
  top: 3px;
  width: 9px;
  height: 30px;
  display: block;
  background: var(--primary);
  border-radius: 2px;
}

.h-logo i:first-child {
  left: 0;
}

.h-logo i:last-child {
  right: 0;
}

.h-logo b {
  position: absolute;
  left: 13px;
  top: 15px;
  width: 8px;
  height: 5px;
  display: block;
  background: var(--action);
  border-radius: 1px;
}

.brand-name {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.3px;
  color: var(--primary);
  white-space: nowrap;
}

.header-search {
  position: relative;
  align-items: center;
}

.header-search svg {
  position: absolute;
  left: 12px;
  width: 17px;
  height: 17px;
  color: var(--ink-3);
  pointer-events: none;
}

.header-search input {
  width: 240px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--bg);
  padding: 8px 16px 8px 38px;
  font-size: 14px;
  color: var(--ink);
  transition: border .2s, box-shadow .2s, background .2s;
}

.header-search input:focus {
  outline: none;
  border-color: var(--action);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(30, 158, 147, 0.12);
}

.header-search input::placeholder {
  color: var(--ink-3);
}

.site-header .btn-sm {
  min-height: 38px;
  padding-top: 7px;
  padding-bottom: 7px;
}

.channel-nav {
  display: block;
  border-top: 1px solid rgba(220, 233, 232, 0.72);
}

.channel-nav-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  overflow-x: auto;
  scrollbar-width: none;
  white-space: nowrap;
  position: relative;
}

.channel-nav-inner::-webkit-scrollbar {
  display: none;
}

.channel-nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 46px;
  padding: 0 4px;
  font-size: 15px;
  color: var(--ink-2);
  transition: color .2s;
}

.channel-nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  border-radius: 3px 3px 0 0;
  background: var(--action);
  transition: width .2s;
}

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

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

.channel-nav a.active::after {
  width: 28px;
}

.channel-nav a.active::before {
  content: "";
  position: absolute;
  right: -7px;
  bottom: 8px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .2s, border .2s, color .2s, transform .18s, box-shadow .2s;
  padding: 11px 22px;
  line-height: 1.2;
  font-size: 15px;
}

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

.btn-primary {
  background: var(--action);
  color: #ffffff;
  box-shadow: 0 8px 22px rgba(30, 158, 147, 0.22);
}

.btn-primary:hover {
  background: var(--action-dark);
  box-shadow: 0 12px 28px rgba(30, 158, 147, 0.28);
  transform: translateY(-2px);
}

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

.btn-outline:hover {
  background: rgba(30, 158, 147, 0.1);
  border-color: var(--primary);
}

.btn-outline-light {
  background: transparent;
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.7);
}

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

.btn-white {
  background: #FFFFFF;
  color: var(--primary);
}

.btn-white:hover {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
  transform: translateY(-2px);
}

.btn-teal-dark {
  background: transparent;
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.45);
}

.btn-teal-dark:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #FFFFFF;
  border-color: #FFFFFF;
}

.hero-panel {
  background: linear-gradient(180deg, #FFFFFF 0%, #F4F8F8 100%);
  border-bottom: 1px solid var(--line);
}

.hero-split {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 56px;
  align-items: center;
  padding-top: 44px;
  padding-bottom: 72px;
}

.breadcrumb-line {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-3);
  margin-bottom: 26px;
}

.breadcrumb-line a {
  color: var(--ink-3);
  transition: color .2s;
}

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--primary);
  margin-bottom: 18px;
}

.eyebrow-line {
  display: inline-block;
  width: 3px;
  height: 18px;
  background: var(--action);
  border-radius: 2px;
}

.hero-title {
  font-size: clamp(34px, 4.6vw, 51px);
  line-height: 1.24;
  letter-spacing: -1px;
  color: var(--ink);
  margin-bottom: 20px;
}

.hero-title em {
  font-style: normal;
  color: var(--primary);
  border-bottom: 4px solid rgba(240, 163, 94, 0.55);
}

.hero-desc {
  font-size: 16px;
  color: var(--ink-2);
  line-height: 1.9;
  margin-bottom: 32px;
  max-width: 620px;
}

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

.hero-assurance {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 34px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.hero-assurance span {
  font-size: 13px;
  color: var(--ink-2);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-assurance i {
  display: inline-flex;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(30, 158, 147, 0.14);
  color: var(--primary);
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-style: normal;
}

.hero-media {
  position: relative;
  display: block;
}

.hero-media-inner {
  position: relative;
  overflow: hidden;
  border-radius: 22px;
  background: var(--primary-soft);
  box-shadow: var(--shadow-hover);
  aspect-ratio: 5 / 4.4;
}

.hero-media-inner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}

.hero-media-inner:hover img {
  transform: scale(1.02);
}

.hero-shot {
  position: absolute;
  right: 18px;
  bottom: 16px;
  height: auto;
}

.hero-float-tag {
  width: 112px;
  padding: 14px 12px;
  border-radius: 14px;
  background: #FFFFFF;
  box-shadow: var(--shadow-hover);
  position: absolute;
  left: -22px;
  top: 18px;
  z-index: 2;
  text-align: center;
  border: 1px solid var(--line);
}

.hero-float-tag strong {
  font-size: 14px;
  color: var(--primary);
  display: block;
}

.hero-float-tag span {
  font-size: 12px;
  color: var(--ink-3);
}

.hero-corner-seal {
  position: absolute;
  bottom: -20px;
  left: 34px;
  z-index: 3;
  width: 88px;
  height: 88px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #FFFFFF;
  border-radius: 12px 12px 20px 20px;
  transform: rotate(-4deg);
  box-shadow: 0 18px 30px rgba(15, 92, 95, 0.3);
}

.hero-corner-seal b {
  font-size: 18px;
  letter-spacing: 4px;
  line-height: 1.3;
}

.hero-corner-seal span {
  font-size: 11px;
  letter-spacing: 2px;
  opacity: 0.8;
}

.media-grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(30, 158, 147, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 158, 147, 0.08) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  z-index: 1;
}

.split-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 64px;
  align-items: center;
}

.split-photo-box {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  background: var(--primary-soft);
  box-shadow: var(--shadow-sm);
}

.split-photo-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.split-photo-box .media-grid-lines {
  z-index: 2;
  mix-blend-mode: multiply;
}

.section-heading {
  margin-bottom: 52px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
  flex-wrap: wrap;
}

.heading-left {
  max-width: 760px;
}

.eyebrow-teal {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 8px;
}

.section-title {
  font-size: clamp(25px, 3vw, 34px);
  line-height: 1.28;
  color: var(--ink);
  letter-spacing: -0.5px;
}

.section-subtitle {
  margin-top: 12px;
  color: var(--ink-2);
  font-size: 16px;
  max-width: 680px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.feature-card {
  position: relative;
  padding: 28px 24px;
  background: #FFFFFF;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  transition: transform .22s, box-shadow .22s, border .22s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(30, 158, 147, 0.28);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 18px;
}

.feature-card h3 {
  font-size: 18px;
  color: var(--ink);
  margin-bottom: 8px;
}

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

.check-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.check-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #FFFFFF;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 15px;
  color: var(--ink);
  transition: border .2s, background .2s;
}

.check-item:hover {
  border-color: rgba(30, 158, 147, 0.35);
  background: rgba(30, 158, 147, 0.03);
}

.check-item i {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(30, 158, 147, 0.12);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-style: normal;
  flex-shrink: 0;
}

.guide-band {
  background: #FFFFFF;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.step-track-section {
  position: relative;
}

.step-stack {
  position: relative;
  max-width: 880px;
  margin: 0 auto;
}

.step-stack::before {
  content: "";
  position: absolute;
  top: 28px;
  bottom: 28px;
  left: 38px;
  width: 2px;
  background: repeating-linear-gradient(to bottom, var(--line) 0 10px, transparent 10px 18px);
}

.step-row {
  position: relative;
  display: grid;
  grid-template-columns: 80px minmax(0, 1fr);
  gap: 28px;
  padding: 26px 0;
}

.step-index {
  position: relative;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.step-index span {
  position: absolute;
  font-size: 72px;
  font-weight: 800;
  color: rgba(30, 158, 147, 0.15);
  line-height: 1;
  font-family: Arial, sans-serif;
}

.step-card {
  background: #FFFFFF;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 22px 26px;
  box-shadow: var(--shadow-sm);
  transition: transform .2s, box-shadow .2s;
}

.step-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.step-card h3 {
  font-size: 18px;
  color: var(--primary);
  margin-bottom: 8px;
}

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

.channel-rows {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.channel-row-card {
  background: #FFFFFF;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform .2s, box-shadow .2s, border-color .2s;
  display: flex;
}

.channel-row-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(15, 92, 95, 0.18);
}

.channel-row-media {
  width: 132px;
  min-height: 140px;
  flex-shrink: 0;
  background: var(--primary-soft);
  overflow: hidden;
}

.channel-row-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.channel-row-body {
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
}

.channel-row-body h3 {
  font-size: 17px;
  color: var(--ink);
}

.channel-row-body p {
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.7;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.channel-row-tag {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  width: -moz-fit-content;
  gap: 4px;
  font-size: 12px;
  color: var(--action-dark);
  background: rgba(30, 158, 147, 0.1);
  border-radius: 999px;
  padding: 3px 10px;
}

.dark-band {
  background: var(--dark);
  color: #FFFFFF;
  position: relative;
  overflow: hidden;
}

.dark-band::after {
  content: "H";
  position: absolute;
  right: -40px;
  bottom: -110px;
  font-size: 420px;
  line-height: 1;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.04);
  pointer-events: none;
}

.dark-band .section-title,
.dark-band .section-subtitle {
  color: #FFFFFF;
}

.dark-band .section-subtitle {
  color: rgba(255, 255, 255, 0.72);
}

.amber-strip {
  width: 100%;
  height: 4px;
  background: var(--accent);
  margin-top: -2px;
  position: relative;
  z-index: 1;
}

.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 44px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.stat-cell {
  padding: 24px 18px;
  border-left: 1px solid rgba(255, 255, 255, 0.12);
}

.stat-cell:last-child {
  border-right: 1px solid rgba(255, 255, 255, 0.12);
}

.stat-cell strong {
  display: block;
  font-size: 34px;
  line-height: 1.2;
  color: #FFFFFF;
  letter-spacing: -0.5px;
}

.stat-cell span {
  display: block;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 4px;
}

.faq-section {
  background: var(--bg);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 56px;
  align-items: flex-start;
}

.faq-column-shift {
  padding-top: 36px;
}

.faq-item {
  background: #FFFFFF;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
  overflow: hidden;
  transition: border .22s, box-shadow .22s;
}

.faq-item:hover {
  border-color: rgba(30, 158, 147, 0.22);
  box-shadow: var(--shadow-hover);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 22px;
  user-select: none;
}

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

.faq-summary-title {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
  flex: 1;
}

.faq-summary-title::before {
  content: "";
  flex-shrink: 0;
  width: 4px;
  height: 24px;
  margin-top: 2px;
  border-radius: 2px;
  background: var(--primary);
}

.faq-mark {
  flex-shrink: 0;
  position: relative;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary-soft);
  transition: background .22s, transform .2s;
}

.faq-mark::before,
.faq-mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 12px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: transform .2s;
}

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

.faq-item[open] .faq-mark {
  background: var(--primary);
}

.faq-item[open] .faq-mark::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.faq-answer {
  padding: 0 22px 4px 40px;
  font-size: 15px;
  color: var(--ink-2);
  line-height: 1.85;
}

.faq-answer p {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.faq-item[open] .faq-summary-title {
  color: var(--primary);
}

.cta-band {
  background: linear-gradient(0deg, rgba(18, 55, 58, 0.96) 0%, rgba(18, 55, 58, 1) 100%),
              url("/assets/images/backpic/back-1.png") center center / cover no-repeat;
  position: relative;
  overflow: hidden;
  color: #FFFFFF;
}

.cta-band::before {
  content: "H";
  position: absolute;
  width: 460px;
  height: 460px;
  right: -90px;
  bottom: -190px;
  font-size: 450px;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.035);
  line-height: 1;
  pointer-events: none;
}

.cta-band::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 26px 26px;
  pointer-events: none;
}

.cta-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 72px 24px;
  max-width: 780px;
  margin: 0 auto;
}

.cta-title {
  font-size: clamp(27px, 3vw, 36px);
  color: #FFFFFF;
  line-height: 1.35;
  margin-bottom: 12px;
  font-weight: 700;
}

.cta-copy {
  color: rgba(255, 255, 255, 0.76);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 30px;
}

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

.site-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.74);
}

.footer-grid {
  display: grid;
  grid-template-columns: 3fr 1.8fr 2.2fr 4fr;
  gap: 48px;
  padding: 56px 0 34px;
}

.site-footer .brand-name {
  color: #F4F8F8;
}

.site-footer .h-logo i {
  background: #F4F8F8;
}

.site-footer .h-logo b {
  background: var(--accent);
}

.footer-brand p {
  margin-top: 18px;
  max-width: 250px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.66);
}

.footer-title {
  font-size: 15px;
  color: #FFFFFF;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.footer-title::after {
  content: "";
  display: block;
  width: 22px;
  height: 3px;
  border-radius: 2px;
  background: var(--accent);
  margin-top: 8px;
}

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

.footer-link-list a {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.66);
  transition: color .2s;
}

.footer-link-list a:hover {
  color: #FFFFFF;
}

.footer-channel-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-channel-list a {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.68);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: background .2s, color .2s;
}

.footer-channel-list a:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #FFFFFF;
}

.footer-contact p {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.62);
}

.footer-contact .footer-title {
  margin-bottom: 8px;
}

.footer-legal {
  padding: 22px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.52);
}

.footer-legal .legal-copy {
  color: rgba(255, 255, 255, 0.82);
}

.timeline-note {
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 1024px) {
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }

  .hero-split,
  .split-intro {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-top: 40px;
    padding-bottom: 48px;
  }

  .hero-media-inner {
    max-width: 680px;
  }

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

  .blog-grid-vertical {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px 32px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 60px 0;
  }

  .section-tight {
    padding: 44px 0;
  }

  .header-top {
    padding-top: 12px;
    padding-bottom: 12px;
  }

  .brand-name {
    font-size: 20px;
  }

  .channel-nav a {
    height: 42px;
    font-size: 14px;
  }

  .channel-nav-inner {
    gap: 22px;
  }

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

  .check-list,
  .channel-rows {
    grid-template-columns: 1fr;
  }

  .channel-row-media {
    width: 108px;
  }

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

  .stat-cell {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .stat-cell:nth-child(3) {
    border-left: 1px solid rgba(255, 255, 255, 0.12);
  }

  .stat-cell:nth-child(4) {
    border-right: 1px solid rgba(255, 255, 255, 0.12);
  }

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

  .faq-column-shift {
    padding-top: 0;
  }

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

@media (max-width: 520px) {
  body {
    line-height: 1.65;
  }

  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

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

  .hero-split {
    padding-top: 28px;
    padding-bottom: 40px;
  }

  .hero-assurance {
    gap: 10px;
  }

  .hero-float-tag {
    left: 8px;
    top: 8px;
  }

  .hero-corner-seal {
    width: 74px;
    height: 74px;
  }

  .step-stack::before {
    left: 18px;
  }

  .step-row {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 14px;
  }

  .step-index span {
    font-size: 44px;
  }

  .step-card {
    padding: 18px 16px;
  }

  .cta-inner {
    padding: 52px 4px;
  }

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

  .footer-legal {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* roulang page: article */
:root {
            --primary: #0F5C5F;
            --primary-dark: #0B4749;
            --accent: #1E9E93;
            --accent-hover: #147C74;
            --amber: #F0A35E;
            --bg: #F4F8F8;
            --bg-sub: #E8F0EF;
            --dark-bg: #12373A;
            --text: #1D3437;
            --text-secondary: #5C7578;
            --text-muted: #93AAAC;
            --border: #DCE9E8;
            --radius-card: 14px;
            --radius-btn: 8px;
            --shadow-card: 0 10px 30px rgba(9, 51, 56, 0.08);
            --shadow-hover: 0 18px 44px rgba(9, 51, 56, 0.13);
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

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

        button {
            font-family: inherit;
            border: 0;
            background: none;
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin-inline: auto;
            padding-inline: 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.93);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid transparent;
            transition: border-color .25s, box-shadow .25s;
        }

        .site-header.is-scrolled {
            border-bottom-color: var(--border);
            box-shadow: 0 6px 18px rgba(9, 51, 56, 0.05);
        }

        .header-top {
            display: flex;
            height: 72px;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--primary);
            transition: opacity .2s;
        }

        .brand-logo:hover {
            opacity: .82;
        }

        .h-logo {
            display: inline-block;
            position: relative;
            width: 28px;
            height: 28px;
            flex: none;
        }

        .h-logo i,
        .h-logo b {
            position: absolute;
            display: block;
            border-radius: 2px;
        }

        .h-logo i {
            top: 2px;
            width: 5px;
            height: 24px;
            background: currentColor;
        }

        .h-logo i:first-child {
            left: 1px;
        }

        .h-logo i:last-child {
            right: 1px;
        }

        .h-logo b {
            top: 11px;
            left: 7px;
            width: 14px;
            height: 5px;
            background: currentColor;
        }

        .brand-name {
            font-size: 22px;
            font-weight: 800;
            letter-spacing: .5px;
            white-space: nowrap;
        }

        .header-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg-sub);
            border: 1px solid transparent;
            border-radius: 999px;
            padding: 8px 16px;
            transition: border-color .2s, background .2s;
        }

        .header-search:focus-within {
            border-color: var(--accent);
            background: #fff;
        }

        .header-search svg {
            width: 16px;
            height: 16px;
            stroke: var(--text-muted);
            flex: none;
        }

        .header-search input {
            border: none;
            background: none;
            outline: none;
            width: 150px;
            font-size: 14px;
            color: var(--text);
        }

        .header-search input::placeholder {
            color: var(--text-muted);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            padding: 11px 24px;
            font-size: 15px;
            border: 1px solid transparent;
            transition: background .2s, border-color .2s, color .2s, box-shadow .2s, transform .2s;
            white-space: nowrap;
            line-height: 1.4;
        }

        .btn:active {
            transform: scale(.98);
        }

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

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

        .btn-primary:hover {
            background: var(--accent-hover);
        }

        .btn-sm {
            padding: 7px 16px;
            font-size: 14px;
        }

        .channel-nav {
            border-top: 1px solid var(--border);
            background: rgba(255, 255, 255, .98);
        }

        .channel-nav-inner {
            display: flex;
            align-items: center;
            gap: 30px;
            overflow-x: auto;
            scrollbar-width: none;
        }

        .channel-nav-inner::-webkit-scrollbar {
            display: none;
        }

        .channel-nav a {
            position: relative;
            display: inline-block;
            padding: 11px 2px 14px;
            font-size: 15px;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: color .2s;
            border-bottom: 2px solid transparent;
        }

        .channel-nav a:hover {
            color: var(--accent);
        }

        .channel-nav a.active {
            color: var(--primary);
            font-weight: 700;
        }

        .channel-nav a.active::after {
            content: "";
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: 6px;
            width: 24px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }

        .category-hero {
            position: relative;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            overflow: hidden;
            padding: 48px 0 52px;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(15, 92, 95, .045) 1px, transparent 1px),
                linear-gradient(90deg, rgba(15, 92, 95, .045) 1px, transparent 1px);
            background-size: 40px 40px;
            pointer-events: none;
        }

        .category-hero::after {
            content: "HTH";
            position: absolute;
            right: 2%;
            bottom: -14px;
            font-size: 150px;
            font-weight: 800;
            color: rgba(15, 92, 95, .05);
            line-height: 1;
            pointer-events: none;
            letter-spacing: -6px;
        }

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

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color .2s;
        }

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

        .breadcrumb .sep {
            color: var(--text-muted);
            opacity: .7;
        }

        .breadcrumb .current {
            color: var(--primary);
            font-weight: 500;
        }

        .cat-hero-grid {
            display: grid;
            grid-template-columns: 1.15fr .85fr;
            gap: 60px;
            align-items: center;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 2px;
            text-transform: uppercase;
            background: rgba(30, 158, 147, .1);
            padding: 5px 12px 5px 8px;
            border-radius: 999px;
        }

        .eyebrow i {
            display: block;
            width: 3px;
            height: 16px;
            background: var(--accent);
            border-radius: 3px;
        }

        .cat-h1 {
            font-size: 46px;
            line-height: 1.2;
            font-weight: 800;
            color: var(--text);
            margin: 16px 0 18px;
            letter-spacing: -1px;
        }

        .cat-hero-desc {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 560px;
            line-height: 1.8;
        }

        .hero-media {
            position: relative;
        }

        .hero-media img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
            border-radius: 20px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            background: var(--bg-sub);
        }

        .hero-media .seal {
            position: absolute;
            left: -18px;
            bottom: 22px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 700;
            padding: 8px 14px;
            box-shadow: var(--shadow-card);
            letter-spacing: 1px;
        }

        .hero-stat-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 42px;
            padding-top: 26px;
            border-top: 1px solid var(--border);
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero-stat strong {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }

        .hero-stat span {
            font-size: 14px;
            color: var(--text-muted);
        }

        .section {
            padding: 88px 0;
        }

        .section-title {
            font-size: 30px;
            line-height: 1.3;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.5px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-top: 14px;
        }

        .white-section {
            background: #fff;
            border-bottom: 1px solid var(--border);
        }

        .sub-bg-section {
            background: var(--bg-sub);
            border-bottom: 1px solid var(--border);
        }

        .media-row {
            display: grid;
            grid-template-columns: 1.05fr .95fr;
            align-items: center;
            gap: 64px;
        }

        .media-row .txt {
            order: 1;
        }

        .media-row .img-side {
            order: 2;
        }

        .media-row.flip .txt {
            order: 2;
        }

        .media-row.flip .img-side {
            order: 1;
        }

        .img-side img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
            border-radius: 20px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            background: var(--bg-sub);
        }

        .img-side .img-cap {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 10px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .img-side .img-cap i {
            width: 18px;
            height: 2px;
            background: var(--accent);
            display: block;
            border-radius: 2px;
        }

        .content h2 {
            font-size: 30px;
            line-height: 1.3;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 18px;
            letter-spacing: -0.4px;
        }

        .content p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .content .link-arrow {
            color: var(--accent);
            font-weight: 600;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap .2s, color .2s;
        }

        .content .link-arrow:hover {
            gap: 10px;
            color: var(--accent-hover);
        }

        .quick-list {
            margin-top: 30px;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .quick-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
        }

        .quick-list li:last-child {
            border-bottom: none;
        }

        .quick-list i {
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 2px;
            margin-top: 10px;
            flex: none;
            transform: rotate(45deg);
        }

        .quick-list a {
            font-weight: 600;
            color: var(--text);
            transition: color .2s;
        }

        .quick-list a:hover {
            color: var(--accent);
        }

        .quick-list p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 2px 0 0;
            line-height: 1.6;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            margin-top: 44px;
            position: relative;
        }

        .steps-grid::before {
            content: "";
            position: absolute;
            top: 34px;
            left: 8%;
            right: 8%;
            border-top: 1px dashed rgba(30, 158, 147, .35);
        }

        .step-card {
            position: relative;
            text-align: center;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 32px 20px 28px;
            box-shadow: var(--shadow-card);
            transition: transform .2s, box-shadow .2s;
        }

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

        .step-num {
            width: 60px;
            height: 60px;
            margin: 0 auto 20px;
            border-radius: 16px;
            background: var(--bg-sub);
            color: var(--primary);
            font-size: 26px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border);
            letter-spacing: -1px;
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .notice-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px;
            display: flex;
            gap: 18px;
            align-items: flex-start;
            box-shadow: 0 4px 14px rgba(9, 51, 56, .04);
        }

        .notice-card .n-icon {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: rgba(240, 163, 94, .16);
            color: var(--amber);
            display: flex;
            align-items: center;
            justify-content: center;
            flex: none;
        }

        .notice-card .n-icon svg {
            width: 20px;
            height: 20px;
            stroke: currentColor;
            fill: none;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .notice-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }

        .notice-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .notice-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 42px;
        }

        .faq-section {
            background: #fff;
            border-bottom: 1px solid var(--border);
        }

        .faq-head {
            max-width: 600px;
        }

        .faq-cols {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px 40px;
            align-items: start;
            margin-top: 48px;
        }

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

        .faq-col + .faq-col {
            margin-top: 36px;
        }

        .faq-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: box-shadow .2s, border-color .2s;
        }

        .faq-item.open {
            box-shadow: var(--shadow-card);
            border-color: #BFDAD7;
        }

        .faq-q {
            width: 100%;
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            text-align: left;
            padding: 18px 18px 18px 22px;
            gap: 14px;
            color: var(--text);
            font-weight: 600;
            font-size: 15px;
            line-height: 1.5;
            position: relative;
        }

        .faq-q::before {
            content: "";
            position: absolute;
            left: 0;
            top: 16px;
            bottom: 16px;
            width: 3px;
            border-radius: 0 3px 3px 0;
            background: var(--accent);
        }

        .faq-q .faq-icon {
            flex: none;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(30, 158, 147, .12);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform .25s, background .2s, color .2s;
        }

        .faq-icon svg {
            width: 14px;
            height: 14px;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
        }

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

        .faq-a {
            max-height: 0;
            overflow: hidden;
            padding: 0 22px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
            transition: max-height .3s ease, padding .3s ease;
        }

        .faq-item.open .faq-a {
            max-height: 320px;
            padding-bottom: 22px;
        }

        .cta-block {
            position: relative;
            background: var(--dark-bg);
            color: #fff;
            padding: 92px 0;
            overflow: hidden;
        }

        .cta-block::before {
            content: "HTH";
            position: absolute;
            right: 2%;
            bottom: -26px;
            font-size: 190px;
            font-weight: 800;
            color: rgba(255, 255, 255, .05);
            line-height: 1;
            letter-spacing: -8px;
            pointer-events: none;
        }

        .cta-block .container {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 760px;
        }

        .cta-line {
            width: 64px;
            height: 4px;
            background: var(--amber);
            border-radius: 4px;
            margin: 0 auto 28px;
        }

        .cta-block h2 {
            font-size: 34px;
            line-height: 1.3;
            font-weight: 800;
            letter-spacing: -0.5px;
        }

        .cta-block p {
            color: rgba(255, 255, 255, .78);
            font-size: 16px;
            margin: 18px auto 36px;
            max-width: 580px;
            line-height: 1.8;
        }

        .btn-light {
            background: #fff;
            color: var(--dark-bg);
            border: 1px solid transparent;
        }

        .btn-light:hover {
            background: var(--amber);
            color: var(--dark-bg);
        }

        .btn-outline-white {
            border-color: rgba(255, 255, 255, .6);
            color: #fff;
            background: transparent;
        }

        .btn-outline-white:hover {
            background: rgba(255, 255, 255, .1);
            border-color: #fff;
        }

        .cta-btns {
            display: flex;
            justify-content: center;
            gap: 18px;
            flex-wrap: wrap;
        }

        .site-footer {
            background: var(--dark-bg);
            color: rgba(255, 255, 255, .9);
            border-top: 1px solid rgba(255, 255, 255, .06);
        }

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

        .footer-grid {
            display: grid;
            grid-template-columns: 3fr 2fr 3fr 4fr;
            gap: 42px;
            padding: 64px 0 44px;
        }

        .footer-brand .brand-name {
            font-size: 22px;
            font-weight: 800;
        }

        .footer-desc {
            color: rgba(255, 255, 255, .68);
            font-size: 14px;
            line-height: 1.8;
            margin-top: 18px;
            max-width: 300px;
        }

        .footer-title {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
            color: #fff;
            letter-spacing: 1px;
        }

        .footer-link-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 14px;
        }

        .footer-link-list a {
            color: rgba(255, 255, 255, .72);
            transition: color .2s, padding-left .2s;
        }

        .footer-link-list a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-channel-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-channel-list a {
            background: rgba(255, 255, 255, .06);
            color: rgba(255, 255, 255, .78);
            padding: 5px 12px;
            border-radius: 999px;
            font-size: 13px;
            transition: background .2s, color .2s;
        }

        .footer-channel-list a:hover {
            background: rgba(255, 255, 255, .16);
            color: #fff;
        }

        .footer-contact {
            font-size: 14px;
            color: rgba(255, 255, 255, .66);
            line-height: 1.8;
        }

        .footer-legal {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            color: rgba(255, 255, 255, .58);
            font-size: 13px;
        }

        .legal-copy {
            color: rgba(255, 255, 255, .82);
        }

        .mobile-search {
            display: none;
        }

        @media (max-width: 1024px) {
            .header-search {
                display: none;
            }

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

            .hero-media {
                max-width: 480px;
            }

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

            .media-row.flip .txt {
                order: 1;
            }

            .media-row.flip .img-side {
                order: 2;
            }

            .steps-grid {
                grid-template-columns: 1fr;
                max-width: 560px;
                margin-left: auto;
                margin-right: auto;
            }

            .steps-grid::before {
                display: none;
            }

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

        @media (max-width: 768px) {
            .section {
                padding: 64px 0;
            }

            .cat-h1 {
                font-size: 34px;
            }

            .section-title {
                font-size: 26px;
            }

            .faq-cols {
                grid-template-columns: 1fr;
                gap: 14px;
                margin-top: 32px;
            }

            .faq-col + .faq-col {
                margin-top: 6px;
            }

            .notice-grid {
                grid-template-columns: 1fr;
                gap: 14px;
                margin-top: 28px;
            }

            .hero-stat-row {
                grid-template-columns: 1fr 1fr 1fr;
                gap: 12px;
            }

            .hero-stat strong {
                font-size: 22px;
            }

            .cta-block {
                padding: 70px 0;
            }
        }

        @media (max-width: 520px) {
            .brand-name {
                font-size: 19px;
            }

            .h-logo {
                width: 24px;
                height: 24px;
            }

            .h-logo i {
                top: 2px;
                height: 20px;
                width: 4px;
            }

            .h-logo b {
                top: 9px;
                left: 6px;
                width: 12px;
                height: 4px;
            }

            .header-top {
                height: 62px;
            }

            .channel-nav-inner {
                gap: 20px;
            }

            .channel-nav a {
                font-size: 14px;
                padding: 10px 0 12px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                padding: 48px 0 32px;
            }

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

            .hero-stat-row {
                margin-top: 28px;
                padding-top: 20px;
            }

            .hero-media .seal {
                left: 10px;
                bottom: 10px;
            }

            .step-card {
                padding: 24px 16px;
            }

            .cta-block h2 {
                font-size: 28px;
            }
        }

/* roulang page: category3 */
:root {
        --teal-deep: #0F5C5F;
        --accent: #1E9E93;
        --accent-hover: #147C74;
        --amber: #F0A35E;
        --bg: #F4F8F8;
        --bg-2: #E8F0EF;
        --dark: #12373A;
        --ink: #1D3437;
        --ink-2: #5C7578;
        --ink-3: #93AAAC;
        --line: #DCE9E8;
        --radius: 14px;
        --radius-lg: 20px;
        --shadow-sm: 0 10px 30px rgba(9, 51, 56, .08);
        --shadow-lg: 0 18px 44px rgba(9, 51, 56, .13);
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
        background: var(--bg);
        color: var(--ink);
        line-height: 1.75;
        margin: 0;
    }
    *,
    *::before,
    *::after {
        box-sizing: border-box;
    }
    img {
        max-width: 100%;
        display: block;
        object-fit: cover;
    }
    a {
        text-decoration: none;
        color: inherit;
    }
    button,
    input {
        font: inherit;
        border: none;
        outline: none;
    }
    ul {
        margin: 0;
        padding: 0;
        list-style: none;
    }
    .container {
        max-width: 1200px;
        margin-left: auto;
        margin-right: auto;
        padding-left: 24px;
        padding-right: 24px;
    }

    /* 双层导航 */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 50;
        background: rgba(255, 255, 255, .94);
        backdrop-filter: blur(10px);
        border-bottom: 1px solid var(--line);
        box-shadow: 0 6px 24px rgba(9, 51, 56, .02);
    }
    .header-top {
        display: flex;
        align-items: center;
        justify-content: space-between;
        min-height: 70px;
    }
    .brand-logo {
        display: inline-flex;
        align-items: center;
        gap: 12px;
        color: var(--teal-deep);
        font-weight: 800;
        letter-spacing: .01em;
    }
    .brand-logo .h-logo {
        position: relative;
        display: inline-block;
        width: 34px;
        height: 26px;
    }
    .brand-logo .h-logo i {
        position: absolute;
        top: 0;
        bottom: 0;
        width: 7px;
        border-radius: 2px;
        background: var(--teal-deep);
    }
    .brand-logo .h-logo b {
        position: absolute;
        top: 11px;
        left: 0;
        right: 0;
        height: 4px;
        border-radius: 2px;
        background: var(--amber);
    }
    .brand-logo .h-logo i:first-child {
        left: 0;
    }
    .brand-logo .h-logo i:last-child {
        right: 0;
    }
    .brand-name {
        font-size: 20px;
        line-height: 1;
    }
    .header-search {
        align-items: center;
        gap: 8px;
        width: 260px;
        padding: 8px 14px;
        border-radius: 999px;
        border: 1px solid var(--line);
        background: #fff;
        color: var(--ink-3);
        transition: box-shadow .2s, border .2s;
    }
    .header-search svg {
        width: 18px;
        height: 18px;
        flex: 0 0 auto;
        stroke: var(--ink-3);
    }
    .header-search input {
        width: 100%;
        background: transparent;
        font-size: 14px;
        color: var(--ink);
    }
    .header-search:focus-within {
        border-color: var(--accent);
        box-shadow: 0 0 0 3px rgba(30, 158, 147, .12);
    }
    .channel-nav {
        border-top: 1px solid var(--line);
    }
    .channel-nav-inner {
        display: flex;
        gap: 2px;
        overflow-x: auto;
        padding-top: 4px;
        scrollbar-width: none;
    }
    .channel-nav-inner::-webkit-scrollbar {
        display: none;
    }
    .channel-nav a {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        height: 46px;
        padding: 0 20px;
        color: var(--ink-2);
        font-size: 15px;
        font-weight: 600;
        white-space: nowrap;
        position: relative;
        border-radius: 8px 8px 0 0;
        transition: color .2s, background .2s;
    }
    .channel-nav a:hover {
        color: var(--teal-deep);
        background: rgba(30, 158, 147, .08);
    }
    .channel-nav a.active {
        color: var(--teal-deep);
    }
    .channel-nav a.active::after {
        content: "";
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
        bottom: 8px;
        width: 24px;
        height: 2px;
        border-radius: 2px;
        background: var(--accent);
        box-shadow: 6px 3px 0 0 var(--amber);
    }

    /* 按钮系统 */
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 12px 24px;
        border-radius: 8px;
        font-weight: 700;
        font-size: 15px;
        letter-spacing: .02em;
        cursor: pointer;
        transition: all .2s ease;
        line-height: 1.2;
    }
    .btn-primary {
        background: var(--accent);
        color: #fff;
    }
    .btn-primary:hover {
        background: var(--accent-hover);
        box-shadow: 0 14px 26px rgba(20, 124, 116, .22);
    }
    .btn-outline {
        background: transparent;
        border: 1px solid var(--teal-deep);
        color: var(--teal-deep);
    }
    .btn-outline:hover {
        background: rgba(30, 158, 147, .09);
    }
    .btn-light {
        background: #fff;
        color: var(--teal-deep);
    }
    .btn-light:hover {
        background: var(--amber);
        color: #fff;
    }
    .btn-sm {
        padding: 9px 16px;
        font-size: 14px;
    }
    .btn:active {
        transform: scale(.98);
    }
    .btn:focus-visible {
        outline: none;
        box-shadow: 0 0 0 2px var(--amber);
    }

    /* 通用板块 */
    .section {
        padding: 96px 0;
    }
    .section-space {
        padding: 64px 0;
    }
    .section-eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        font-size: 14px;
        font-weight: 700;
        letter-spacing: .08em;
        color: var(--accent-hover);
        margin-bottom: 12px;
    }
    .section-eyebrow::before {
        content: "";
        width: 4px;
        height: 18px;
        border-radius: 2px;
        background: var(--accent);
    }
    .section-title {
        font-size: 32px;
        line-height: 1.2;
        font-weight: 800;
        color: var(--ink);
        margin: 0 0 14px;
    }
    .lead-text {
        font-size: 17px;
        color: var(--ink-2);
    }

    /* 分类页首屏 */
    .cat-hero {
        background: #fff;
        border-bottom: 1px solid var(--line);
        position: relative;
        overflow: hidden;
    }
    .cat-hero::before {
        content: "H";
        position: absolute;
        top: -160px;
        right: -70px;
        font-size: 460px;
        font-weight: 900;
        line-height: 1;
        color: rgba(15, 92, 95, .035);
        pointer-events: none;
        letter-spacing: -0.06em;
    }
    .cat-hero-inner {
        padding: 64px 24px;
        display: grid;
        grid-template-columns: 1.1fr .9fr;
        gap: 48px;
        align-items: center;
        max-width: 1200px;
        margin: 0 auto;
    }
    .breadcrumb {
        display: flex;
        flex-wrap: wrap;
        gap: 6px;
        align-items: center;
        font-size: 13px;
        color: var(--ink-3);
        margin-bottom: 20px;
    }
    .breadcrumb a {
        color: var(--ink-3);
    }
    .breadcrumb a:hover {
        color: var(--accent);
    }
    .breadcrumb .sep {
        color: var(--ink-3);
        margin: 0 2px;
    }
    .breadcrumb .current {
        color: var(--teal-deep);
        font-weight: 600;
    }
    .cat-hero h1 {
        font-size: 48px;
        line-height: 1.16;
        margin: 0 0 18px;
        font-weight: 900;
        color: var(--ink);
        letter-spacing: .01em;
    }
    .hero-desc {
        font-size: 17px;
        line-height: 1.9;
        color: var(--ink-2);
        max-width: 56ch;
        margin: 0 0 32px;
    }
    .hero-media {
        position: relative;
        border-radius: 20px;
        overflow: hidden;
        aspect-ratio: 5 / 4;
        background: var(--bg-2);
        box-shadow: var(--shadow-lg);
    }
    .hero-media img {
        width: 100%;
        height: 100%;
    }
    .floating-tag {
        position: absolute;
        top: 18px;
        left: 18px;
        padding: 8px 14px;
        background: var(--teal-deep);
        color: #fff;
        font-size: 13px;
        font-weight: 700;
        border-radius: 999px;
        letter-spacing: .06em;
    }
    .media-badge {
        position: absolute;
        right: 16px;
        bottom: 16px;
        padding: 12px 16px;
        background: rgba(255, 255, 255, .94);
        border-radius: 12px;
        box-shadow: 0 14px 30px rgba(9, 51, 56, .24);
        color: var(--teal-deep);
        font-size: 14px;
        font-weight: 700;
        display: inline-flex;
        align-items: center;
        gap: 8px;
    }
    .media-badge::before {
        content: "";
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: var(--amber);
    }

    /* 卡片通用 */
    .swatch-card {
        background: #fff;
        border: 1px solid var(--line);
        border-radius: var(--radius);
        padding: 28px 26px;
        transition: transform .2s, box-shadow .2s;
        position: relative;
    }
    .swatch-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-lg);
    }
    .status-dot {
        position: absolute;
        top: 22px;
        right: 22px;
        width: 10px;
        height: 10px;
        border-radius: 50%;
        background: var(--amber);
        box-shadow: 0 0 0 5px rgba(240, 163, 94, .16);
    }

    /* 内容标签 */
    .content-tag {
        display: inline-flex;
        align-items: center;
        padding: 4px 12px;
        background: rgba(15, 92, 95, .08);
        color: var(--teal-deep);
        border-radius: 999px;
        font-size: 12px;
        font-weight: 700;
        margin-bottom: 18px;
        letter-spacing: .02em;
    }
    .content-tag.green {
        background: rgba(30, 158, 147, .1);
        color: var(--accent-hover);
    }
    .content-tag.amber {
        background: rgba(240, 163, 94, .16);
        color: #b56a24;
    }
    .content-card h3 {
        font-size: 20px;
        line-height: 1.4;
        font-weight: 800;
        margin: 0 0 12px;
        padding-right: 26px;
    }
    .content-card p {
        color: var(--ink-2);
        font-size: 15px;
        line-height: 1.85;
        margin: 0 0 18px;
    }
    .content-more {
        color: var(--accent-hover);
        font-weight: 700;
        font-size: 14px;
        display: inline-flex;
        align-items: center;
        gap: 6px;
        transition: gap .2s;
    }
    .content-more:hover {
        gap: 10px;
        color: var(--amber);
    }

    /* 检查流程区 */
    .check-panel {
        background: var(--bg-2);
        border: 1px solid var(--line);
        border-radius: 24px;
        padding: 40px;
    }
    .check-line {
        display: grid;
        grid-template-columns: 84px 1fr;
        gap: 22px;
        position: relative;
        padding: 0 0 32px 0;
        border-bottom: 1px dashed var(--accent);
    }
    .check-line:last-child {
        border-bottom: none;
        padding-bottom: 24px;
    }
    .step-mark {
        width: 64px;
        height: 64px;
        background: rgba(15, 92, 95, .08);
        color: var(--teal-deep);
        border-radius: 16px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 28px;
        font-weight: 800;
        border: 1px solid rgba(15, 92, 95, .06);
    }
    .check-text h3 {
        font-size: 18px;
        font-weight: 800;
        margin: 0 0 6px;
        color: var(--ink);
    }
    .check-text p {
        color: var(--ink-2);
        font-size: 15px;
        margin: 0;
        line-height: 1.8;
    }

    /* 深色数据条 */
    .impact-band {
        background: var(--dark);
        color: #fff;
        border-radius: 20px;
        overflow: hidden;
        position: relative;
        margin: 48px 0;
    }
    .impact-band::after {
        content: "H";
        position: absolute;
        right: -50px;
        bottom: -130px;
        font-size: 340px;
        font-weight: 900;
        opacity: .05;
        line-height: 1;
        pointer-events: none;
    }
    .impact-band-inner {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 0;
        padding: 36px 20px;
        position: relative;
        z-index: 2;
    }
    .impact-cell {
        text-align: center;
        padding: 8px 14px;
        border-left: 1px solid rgba(255, 255, 255, .18);
    }
    .impact-cell:first-child {
        border-left: none;
    }
    .impact-title {
        font-size: 30px;
        line-height: 1.1;
        font-weight: 900;
        color: #F0A35E;
        display: block;
        margin-bottom: 4px;
    }
    .impact-sub {
        font-size: 14px;
        color: rgba(255, 255, 255, .76);
        letter-spacing: .04em;
    }

    /* FAQ 手风琴 */
    .faq-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 22px 32px;
        align-items: start;
    }
    .faq-item {
        background: #fff;
        border: 1px solid var(--line);
        border-left: 3px solid var(--teal-deep);
        border-radius: 12px;
        transition: box-shadow .2s;
    }
    .faq-item.is-open {
        box-shadow: var(--shadow-sm);
    }
    .faq-question {
        background: none;
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        text-align: left;
        padding: 20px 22px;
        font-weight: 700;
        color: var(--ink);
        font-size: 16px;
        cursor: pointer;
        gap: 16px;
    }
    .faq-icon {
        flex: 0 0 auto;
        width: 22px;
        height: 22px;
        border-radius: 50%;
        border: 1px solid var(--accent);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        color: var(--accent);
        position: relative;
    }
    .faq-icon::before {
        content: "";
        width: 10px;
        height: 2px;
        background: currentColor;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }
    .faq-icon::after {
        content: "";
        width: 2px;
        height: 10px;
        background: currentColor;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        transition: transform .2s;
    }
    .faq-item.is-open .faq-icon::after {
        transform: translate(-50%, -50%) rotate(90deg);
        opacity: 0;
    }
    .faq-answer {
        max-height: 0;
        overflow: hidden;
        padding: 0 22px;
        font-size: 15px;
        color: var(--ink-2);
        line-height: 1.8;
        transition: all .3s ease;
    }
    .faq-item.is-open .faq-answer {
        max-height: 260px;
        padding: 0 22px 22px;
    }

    /* CTA */
    .cta-banner {
        background: var(--dark);
        color: #fff;
        text-align: center;
        padding: 80px 24px;
        border-radius: 24px;
        position: relative;
        overflow: hidden;
        box-shadow: 0 26px 60px rgba(0,0,0,.1);
    }
    .cta-banner::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 4px;
        background: linear-gradient(90deg, transparent, var(--amber), transparent);
    }
    .cta-h {
        font-size: 34px;
        font-weight: 900;
        line-height: 1.3;
        margin-bottom: 12px;
        color: #fff;
    }
    .cta-sub {
        font-size: 17px;
        color: rgba(255, 255, 255, .7);
        max-width: 56ch;
        display: block;
        margin: 0 auto 30px;
        line-height: 1.7;
    }

    /* 页脚 */
    .site-footer {
        background: var(--dark);
        color: rgba(255, 255, 255, .76);
        margin-top: 72px;
    }
    .site-footer .brand-logo .brand-name {
        color: #fff;
    }
    .site-footer .brand-logo .h-logo i {
        background: #fff;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 3fr 2fr 3fr 4fr;
        gap: 40px;
        padding: 64px 0 48px;
    }
    .footer-title {
        color: #fff;
        font-size: 16px;
        font-weight: 800;
        margin-bottom: 18px;
    }
    .footer-desc {
        font-size: 15px;
        margin-top: 14px;
        max-width: 34ch;
        line-height: 1.8;
    }
    .footer-link-list,
    .footer-channel-list {
        display: grid;
        gap: 10px;
    }
    .footer-link-list a,
    .footer-channel-list a {
        font-size: 15px;
        transition: color .2s, padding .2s;
    }
    .footer-link-list a:hover,
    .footer-channel-list a:hover {
        color: #fff;
        padding-left: 4px;
    }
    .footer-contact p {
        font-size: 15px;
        margin: 0 0 8px;
        line-height: 1.7;
    }
    .footer-legal {
        display: flex;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 12px;
        border-top: 1px solid rgba(255, 255, 255, .12);
        padding: 22px 0 26px;
        font-size: 14px;
        color: rgba(255, 255, 255, .5);
    }
    .legal-copy {
        color: rgba(255, 255, 255, .7);
    }

    @media (max-width: 1024px) {
        .footer-grid {
            grid-template-columns: 1fr 1fr;
        }
        .cat-hero-inner {
            grid-template-columns: 1fr;
            gap: 24px;
            padding: 48px 24px;
        }
        .cat-hero h1 {
            font-size: 38px;
        }
    }
    @media (max-width: 768px) {
        .section {
            padding: 72px 0;
        }
        .faq-grid {
            grid-template-columns: 1fr;
        }
        .impact-band-inner {
            grid-template-columns: 1fr 1fr;
            row-gap: 20px;
        }
        .impact-cell:nth-child(3) {
            border-left: none;
            border-top: 1px solid rgba(255,255,255,.2);
            padding-top: 22px;
        }
        .impact-cell:nth-child(2) {
            border-top: 1px solid rgba(255,255,255,.2);
            padding-top: 22px;
        }
        .header-search {
            display: none !important;
        }
        .header-top {
            min-height: 62px;
        }
        .brand-name {
            font-size: 18px;
        }
        .cat-hero h1 {
            font-size: 32px;
        }
        .check-line {
            grid-template-columns: 58px 1fr;
        }
    }
    @media (max-width: 520px) {
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 32px;
        }
        .footer-legal {
            flex-direction: column;
        }
        .cat-hero-inner {
            padding: 36px 16px;
        }
        .container {
            padding-left: 16px;
            padding-right: 16px;
        }
        .section-title {
            font-size: 26px;
        }
        .cta-h {
            font-size: 28px;
        }
        .swatch-card {
            padding: 22px 18px;
        }
        .impact-band-inner {
            grid-template-columns: 1fr;
        }
        .impact-cell,
        .impact-cell:nth-child(3) {
            border-left: none;
            border-top: 1px solid rgba(255,255,255,.2);
            padding-top: 20px;
        }
        .impact-cell:first-child {
            border-top: none;
            padding-top: 0;
        }
    }

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

/* roulang page: category2 */
:root{
  --primary:#0F5C5F;
  --action:#1E9E93;
  --action-dark:#147C74;
  --accent:#F0A35E;
  --bg:#F4F8F8;
  --bg2:#E8F0EF;
  --deep:#12373A;
  --ink:#1D3437;
  --sub:#5C7578;
  --muted:#93AAAC;
  --line:#DCE9E8;
  --white:#ffffff;
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:8px;
  --shadow:0 10px 30px rgba(9,51,56,.08);
  --shadow-lg:0 18px 44px rgba(9,51,56,.13);
  --space:112px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--ink);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit;transition:all .2s ease}
img{max-width:100%;height:auto;display:block}
button,input{font-family:inherit;font-size:inherit}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-sm{padding:64px 0}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.header-top{display:flex;align-items:center;justify-content:space-between;min-height:76px;gap:16px}
.brand-logo{display:inline-flex;align-items:center;gap:12px;flex-shrink:0}
.h-logo{width:38px;height:38px;display:inline-flex;flex-direction:column;justify-content:center;flex-wrap:wrap;gap:5px;padding:6px 5px;background:var(--primary);border-radius:8px}
.h-logo i{width:7px;height:22px;background:#fff;border-radius:2px;display:block}
.h-logo b{width:7px;height:22px;background:var(--accent);border-radius:2px;display:block}
.brand-name{font-size:23px;font-weight:800;letter-spacing:.5px;color:var(--primary);white-space:nowrap}
.header-search{position:relative;align-items:center}
.header-search svg{width:17px;height:17px;color:var(--sub);position:absolute;left:13px;top:50%;transform:translateY(-50%);stroke:var(--sub)}
.header-search input{background:var(--white);border:1px solid var(--line);border-radius:999px;padding:9px 16px 9px 38px;font-size:14px;width:230px;outline:none;transition:all .2s}
.header-search input:focus{border-color:var(--action);box-shadow:0 0 0 3px rgba(30,158,147,.15)}
.channel-nav{background:var(--white);border-top:1px solid var(--line)}
.channel-nav-inner{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.channel-nav-inner::-webkit-scrollbar{display:none}
.channel-nav-inner a{display:inline-block;padding:12px 18px;font-size:15px;font-weight:500;color:var(--sub);border-bottom:2px solid transparent;white-space:nowrap}
.channel-nav-inner a:hover{color:var(--primary);background:rgba(30,158,147,.08)}
.channel-nav-inner a.active{color:var(--primary);font-weight:700;border-bottom-color:var(--primary);position:relative}
.channel-nav-inner a.active::after{content:'';position:absolute;bottom:4px;left:50%;transform:translateX(-50%);width:6px;height:6px;background:var(--accent);border-radius:50%}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:8px;font-weight:600;transition:all .22s ease;border:1.5px solid transparent;cursor:pointer;white-space:nowrap}
.btn:focus-visible{outline:none;box-shadow:0 0 0 2px var(--white),0 0 0 4px var(--accent)}
.btn-primary{background:var(--action);color:#fff;padding:12px 26px;font-size:15px}
.btn-primary:hover{background:var(--action-dark);transform:translateY(-2px)}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--ink);padding:11px 24px;font-size:15px}
.btn-ghost:hover{border-color:var(--action);background:rgba(30,158,147,.08);color:var(--primary)}
.btn-light{background:#fff;color:var(--deep);padding:13px 32px;font-size:16px}
.btn-light:hover{background:var(--accent);color:#fff}
.btn-sm{padding:8px 18px;font-size:14px}
a.btn:active{transform:scale(.98)}

/* Page Hero */
.category-hero{background:var(--deep);position:relative;overflow:hidden;padding:54px 0 58px;color:#fff}
.category-hero::before{content:'';position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.18}
.category-hero::after{content:'H';position:absolute;right:-25px;bottom:-80px;font-size:230px;font-weight:900;color:rgba(255,255,255,.02);line-height:1;letter-spacing:-18px;pointer-events:none}
.category-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.68);margin-bottom:18px}
.breadcrumb a{color:rgba(255,255,255,.72)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{opacity:.5}
.category-flag{display:inline-flex;align-items:center;gap:8px;background:rgba(30,158,147,.2);border:1px solid rgba(30,158,147,.4);color:#7fd4cc;padding:6px 14px;border-radius:999px;font-size:13px;margin-bottom:17px}
.category-hero-grid{display:flex;align-items:flex-end;justify-content:space-between;gap:48px}
.category-hero-left{max-width:740px}
.category-hero h1{font-size:46px;line-height:1.24;font-weight:800;letter-spacing:.5px;margin-bottom:18px}
.category-hero p{font-size:16px;line-height:1.9;color:rgba(255,255,255,.82);max-width:670px}
.category-hero-meta{display:flex;gap:14px;flex-wrap:wrap;margin-top:22px}
.cat-tag{background:rgba(240,163,94,.16);color:var(--accent);font-size:13px;padding:5px 14px;border-radius:6px}
.hero-side-card{flex-shrink:0;width:210px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:14px;backdrop-filter:blur(8px);padding:0;overflow:hidden}
.hero-side-card .side-img{height:116px;overflow:hidden}
.hero-side-card .side-img img{background:linear-gradient(135deg,#12373A,#1E9E93)}
.hero-side-card .inner{padding:13px 16px 15px}
.hero-side-card .inner strong{display:block;font-size:14px;margin-bottom:2px;color:#fff}
.hero-side-card .inner span{color:rgba(255,255,255,.58);font-size:12px}

/* Hero bottom ticker */
.hero-ticker{margin-top:40px;border-top:1px solid rgba(255,255,255,.12);padding-top:18px;display:flex;align-items:center;gap:18px;flex-wrap:wrap;color:rgba(255,255,255,.65);font-size:14px}
.hero-ticker b{color:#fff;font-weight:600}
.hero-ticker .dot{width:4px;height:4px;background:var(--accent);display:inline-block;border-radius:50%}

/* Intro-Content Sections */
.content-wrap{padding:72px 0}
.media-row{display:flex;gap:56px;align-items:flex-start}
.media-row.reverse{flex-direction:row-reverse}
.media-text{flex:1.1}
.media-img{flex:0.9}
.eyebrow{display:flex;align-items:center;gap:9px;color:var(--action-dark);font-weight:650;font-size:14px;letter-spacing:1.2px;margin-bottom:16px}
.eyebrow::before{content:'';width:20px;height:2px;background:var(--accent)}
.media-text h2,.section-title{font-size:29px;font-weight:800;line-height:1.4;color:var(--ink);margin-bottom:14px}
.media-text p{color:var(--sub);font-size:16px;line-height:1.85;margin-bottom:14px}
.media-text strong{color:var(--ink)}
.img-frame{border-radius:18px;overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line);position:relative;background:var(--bg2)}
.img-fallback-empty{aspect-ratio:16/11.3;background:var(--bg2);background-image:linear-gradient(45deg,rgba(15,92,95,.05) 25%,transparent 25%,transparent 75%,rgba(15,92,95,.05) 75%),linear-gradient(45deg,rgba(15,92,95,.05) 25%,transparent 25%,transparent 75%,rgba(15,92,95,.05) 75%);background-size:32px 32px;background-position:0 0,16px 16px;display:flex;align-items:center;justify-content:center;color:rgba(15,92,95,.4);min-height:250px}
.img-frame img{width:100%;height:100%;object-fit:cover}

/* Category upper layer full width info card */
.upper-panel{background:var(--bg2);border-radius:var(--radius-lg);padding:42px;position:relative;overflow:hidden;margin-bottom:40px}
.upper-panel .h-bg{position:absolute;right:26px;top:-40px;font-size:220px;font-weight:800;color:rgba(15,92,95,.07);line-height:1;pointer-events:none}
.upper-panel h2{font-size:25px;font-weight:800;color:var(--ink);position:relative;z-index:2}
.upper-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:24px;position:relative}
.upper-grid .lead{grid-column:1 / -1;color:var(--sub);border-left:3px solid var(--action);padding-left:16px;background:rgba(255,255,255,.5);border-radius:0 10px 10px 0;padding:14px 16px}
.mini-item{border:1px solid rgba(15,92,95,.1);background:#f4f9f9;border-radius:12px;padding:20px;display:flex;gap:14px;align-items:flex-start}
.mini-item .mi-icon{width:38px;height:38px;border-radius:10px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0}
.mini-item strong{display:block;font-size:15px;color:var(--ink);margin-bottom:3px}
.mini-item span{font-size:14px;color:var(--sub);line-height:1.7}

/* Lower service list lines 变体 */
.lower-block{margin-top:34px}
.lower-block-title{display:flex;align-items:baseline;justify-content:space-between;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.lower-block-title h2{font-size:22px;font-weight:800;color:var(--ink)}
.lower-block-title span{font-size:13px;color:var(--muted)}
.service-lines{border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden;box-shadow:var(--shadow)}
.service-line{display:flex;align-items:center;justify-content:space-between;gap:22px;padding:20px 26px;border-bottom:1px solid var(--line);transition:all .25s ease;position:relative}
.service-line:last-child{border-bottom:0}
.service-line:hover{background:rgba(232,240,239,.48);transform:translateX(4px)}
.service-index{font-size:13px;color:var(--action-dark);font-weight:800;width:36px;height:36px;background:rgba(30,158,147,.1);border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.service-body{flex:1;padding-left:4px}
.service-body h3{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:3px}
.service-body p{font-size:14px;color:var(--sub);line-height:1.72;max-width:800px}
.service-tags{display:flex;gap:7px;flex-wrap:wrap}
.service-tags i{font-style:normal;font-size:12px;color:var(--primary);background:rgba(15,92,95,.08);padding:3px 9px;border-radius:999px}
.arrow-move{width:28px;height:28px;color:var(--action);opacity:0;margin-left:6px;transform:translateX(-8px);transition:all .25s ease;display:flex;align-items:center;justify-content:center}
.service-line:hover .arrow-move{opacity:1;transform:translateX(0)}

/* Check two-column panel/stripe */
.ready-wrap{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow)}
.ready-head{background:linear-gradient(90deg,var(--primary),#195B5E 55%,#1E9E93);color:#fff;padding:30px 36px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px}
.ready-head h2{font-size:22px;font-weight:800;color:#fff}
.ready-head p{font-size:15px;color:rgba(255,255,255,.7)}
.ready-grid{display:grid;grid-template-columns:1fr 1fr;gap:0}
.ready-no{width:28px;height:28px;border-radius:50%;background:var(--accent);color:#fff;font-size:13px;font-weight:800;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.ready-item-layout{display:flex;flex-direction:column;gap:0}
.ready-half{border-bottom:1px solid var(--line);padding:25px 30px;background:#fff}
.ready-half:nth-child(odd){border-right:1px solid var(--line)}
.ready-row{display:flex;gap:14px;padding:20px 28px;border-bottom:1px dashed rgba(21,54,58,.1);align-items:flex-start}
.ready-row:last-child{border-bottom:0}
.ready-txt{flex:1}
.ready-txt strong{font-size:15px;color:var(--ink);display:block;margin-bottom:2px}
.ready-txt span{font-size:14px;line-height:1.7;color:var(--sub)}
.ready-row:hover{background:rgba(232,240,239,.4)}

/* Notice panel */
.notice-wrap{border-left:4px solid var(--accent);background:linear-gradient(109deg,var(--white),var(--bg2));box-shadow:var(--shadow);border-radius:0 16px 16px 0;padding:28px 30px;display:flex;gap:18px;flex-wrap:wrap}
.notice-icon{width:42px;height:42px;background:var(--accent);border-radius:10px;color:#fff;display:flex;align-items:center;justify-content:center;font-size:19px;flex-shrink:0}
.notice-icon i{font-style:normal}
.notice-ctx{flex:1;min-width:280px}
.notice-ctx strong{font-size:16px;display:block;color:var(--primary);margin-bottom:4px}
.notice-ctx p{font-size:14px;line-height:1.8;color:var(--sub)}

/* FAQ */
.faq-cols{display:flex;align-items:flex-start;gap:26px}
.faq-col{flex:1;display:flex;flex-direction:column;gap:18px}
.faq-col.item{opacity:0;animation:fadeUp .58s ease forwards}
.faq-col+.faq-col{margin-top:50px}
.faq-col+.faq-col>div:nth-child(even){margin-top:2px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:0 4px 14px rgba(9,51,56,.04);transition:box-shadow .25s ease}
.faq-item:hover{box-shadow:var(--shadow)}
.faq-q{display:flex;gap:14px;align-items:center;padding:18px 20px;cursor:pointer}
.faq-q .icon-q{display:flex;align-items:center;}
.faq-q .icon-q i{transition:transform .3s ease;color:var(--action-dark);font-style:normal;font-size:17px}
.faq-q .line-bluex{display:none}
.faq-q strong{flex:1;font-size:15.5px;color:var(--ink);font-weight:600;line-height:1.55}
.faq-a{padding:0px 22px 20px 20px;color:var(--sub);line-height:1.8;font-size:14px;border-top:1px dashed var(--line);display:none}
.faq-a p{padding-top:16px;margin:0}
.rotate-minus{transform:rotate(0deg)}
/* accordion open state */
.faq-openable:checked~.faq-a{display:block}
.faq-openable{display:none}
.faq-openable:checked~.faq-q .icon-q i{transform:rotate(135deg);color:var(--accent)}
.faq-openable:checked~.faq-q b.fq-active-bar{display:block}

/* CTA */
.dark-cta{background:radial-gradient(circle at 90% 10%,rgba(30,158,147,.36),transparent 26%),linear-gradient(120deg,var(--deep),#0B2A2A);position:relative;overflow:hidden;padding:70px 0}
.dark-cta::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:34px 34px;pointer-events:none}
.dark-cta .amber-line{width:100%;height:3px;background:var(--accent);border-radius:4px;position:relative;z-index:2}
.dark-cta-inner{text-align:center;color:#fff;position:relative;z-index:3}
.dark-cta h2{font-size:36px;font-weight:800;color:#fff;margin:24px 0 14px}
.dark-cta p{width:50%;margin:0 auto 22px;color:rgba(255,255,255,.75);font-size:16px;line-height:1.9;max-width:680px;min-width:340px;}

/* Footer */
.site-footer{background:var(--deep);color:rgba(255,255,255,.8);font-size:13px}
.footer-grid{display:grid;grid-template-columns:3.2fr 2fr 3fr 4fr;gap:42px;padding:56px 0 28px}
.footer-brand .brand-logo .brand-name,.footer-brand .brand-name{color:#fff}
.footer-brand .h-logo{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2)}
.footer-brand .h-logo b{background:var(--accent)}
.footer-desc{margin-top:13px;}
.footer-title{font-size:14px;font-weight:700;letter-spacing:.6px;margin-bottom:15px;color:#fff;border-left:3px solid var(--accent);padding-left:10px}
.footer-link-list{display:grid;grid-template-columns:1fr;gap:3px}
.footer-link-list a,.footer-channel-list a{color:rgba(255,255,255,.68);transition:all .2s ease;padding:3px 0;display:inline-block}
.footer-link-list a:hover,.footer-channel-list a:hover{color:var(--accent);padding-left:4px}
.footer-channel-list{display:flex;flex-wrap:wrap;gap:4px 10px;max-width:260px}
.footer-channel-list a{flex:0 0 auto;font-size:12px;padding:5px 10px;background:rgba(255,255,255,.05);border-radius:999px}
.footer-contact{color:rgba(255,255,255,.6);line-height:1.8}
.footer-legal{display:flex;color:rgba(255,255,255,.40);font-size:12px;padding:18px 0;flex-wrap:wrap;gap:10px 30px;align-items:center;border-top:1px solid rgba(255,255,255,.12);span{margin-right:4px;color:rgba(255,255,255,.4)}}

/* responsive utilities */
@media(max-width:960px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .category-hero-grid{flex-direction:column;gap:58px}
  .category-hero h1{font-size:36px}
  .upper-grid{grid-template-columns:1fr}
  .faq-cols{flex-direction:column;gap:24px}
  .faq-col+.faq-col{margin-top:0}
  .media-row,.media-row.reverse{flex-direction:column}
  .media-img{width:100%}
}
@media(max-width:720px){
  .section{padding:58px 0}
  .header-top{flex-wrap:wrap;padding-top:8px;padding-bottom:8px}
  .brand-name{font-size:19px}
  .channel-nav-inner a{padding:10px 13px;font-size:14px}
  .category-hero{padding:36px 0 42px}
  .category-hero h1{font-size:28px}
  .ready-half:nth-child(odd){border-right:0}
  .ready-grid{grid-template-columns:1fr}
  .ready-half{border-bottom:1px solid var(--line)}
  .service-line{padding:16px 14px;flex-wrap:wrap}
  .service-line .arrow-move{display:none}
  .service-tags{width:100%;margin-left:50px}
  .footer-grid{grid-template-columns:1fr}
  .footer-legal span{color:rgba(255,255,255,.38)}
}

/* scroll animations */
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto}
}