/* roulang page: index */
:root {
      --ink: #111815;
      --ink-2: #26302d;
      --muted: #68756f;
      --soft: #f3f7f5;
      --soft-2: #eaf2ef;
      --line: #dce6e1;
      --white: #ffffff;
      --green: #16a36a;
      --green-2: #0d7f5b;
      --cyan: #20b8bb;
      --orange: #f09a35;
      --dark: #101715;
      --dark-2: #18221f;
      --shadow: 0 18px 48px rgba(17, 24, 21, .10);
      --shadow-sm: 0 10px 28px rgba(17, 24, 21, .07);
      --radius-lg: 22px;
      --radius-md: 16px;
      --radius-sm: 12px;
      --container: 1220px;
      --ease: 180ms ease;
      --header-h: 118px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", Arial, sans-serif;
      color: var(--ink);
      background: var(--white);
      line-height: 1.75;
      letter-spacing: 0;
      overflow-x: hidden;
    }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; display: block; }
    button, input, select, textarea { font: inherit; }
    button { cursor: pointer; }
    ::selection { background: rgba(22, 163, 106, .2); color: var(--ink); }

    .container {
      width: min(var(--container), calc(100% - 64px));
      margin: 0 auto;
    }

    .skip-link {
      position: fixed;
      left: 18px;
      top: 12px;
      transform: translateY(-160%);
      z-index: 200;
      background: var(--ink);
      color: var(--white);
      padding: 10px 14px;
      border-radius: 999px;
      transition: transform var(--ease);
    }
    .skip-link:focus { transform: translateY(0); outline: 3px solid rgba(32, 184, 187, .45); }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255,255,255,.92);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(220,230,225,.72);
      transition: box-shadow var(--ease), background var(--ease);
    }
    .site-header.is-scrolled {
      background: rgba(255,255,255,.98);
      box-shadow: 0 12px 34px rgba(17,24,21,.08);
    }
    .topbar {
      border-bottom: 1px solid var(--line);
      color: var(--muted);
      font-size: 13px;
    }
    .topbar-inner {
      height: 42px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }
    .brand-mini {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--ink);
      font-weight: 700;
    }
    .mark {
      width: 34px;
      height: 34px;
      border-radius: 10px;
      background:
        linear-gradient(135deg, var(--green), var(--cyan));
      position: relative;
      box-shadow: inset 0 0 0 1px rgba(255,255,255,.45), 0 10px 24px rgba(22,163,106,.22);
      flex: 0 0 auto;
    }
    .mark::before, .mark::after {
      content: "";
      position: absolute;
      background: rgba(255,255,255,.86);
      border-radius: 999px;
    }
    .mark::before { width: 18px; height: 3px; left: 8px; top: 11px; transform: rotate(-18deg); }
    .mark::after { width: 14px; height: 3px; left: 11px; bottom: 10px; transform: rotate(18deg); }
    .top-links {
      display: flex;
      align-items: center;
      gap: 18px;
      white-space: nowrap;
    }
    .top-cta {
      color: var(--green-2);
      font-weight: 700;
    }

    .nav-row {
      height: 74px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 12px;
      min-width: 182px;
    }
    .logo-text {
      display: flex;
      flex-direction: column;
      line-height: 1.15;
    }
    .logo-text strong { font-size: 20px; letter-spacing: 0; }
    .logo-text span { color: var(--muted); font-size: 12px; margin-top: 4px; }

    .primary-nav {
      display: flex;
      align-items: center;
      gap: 4px;
      flex: 1;
      justify-content: center;
    }
    .primary-nav a {
      position: relative;
      padding: 13px 12px;
      border-radius: 999px;
      color: var(--ink-2);
      font-size: 15px;
      font-weight: 600;
      transition: background var(--ease), color var(--ease);
      white-space: nowrap;
    }
    .primary-nav a:hover,
    .primary-nav a:focus {
      background: var(--soft);
      color: var(--green-2);
      outline: none;
    }
    .primary-nav a.active {
      color: var(--green-2);
      background: #edf8f3;
    }
    .primary-nav a.active::before {
      content: "";
      width: 6px;
      height: 6px;
      background: var(--green);
      border-radius: 50%;
      position: absolute;
      left: 7px;
      top: 50%;
      transform: translateY(-50%);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 12px;
      border: 1px solid var(--line);
      background: var(--white);
      color: var(--ink);
    }
    .menu-toggle span {
      display: block;
      width: 18px;
      height: 2px;
      background: currentColor;
      margin: 5px auto;
      border-radius: 2px;
      transition: transform var(--ease), opacity var(--ease);
    }
    .menu-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .menu-toggle.is-open span:nth-child(2) { opacity: 0; }
    .menu-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 12px 18px;
      border-radius: 999px;
      border: 1px solid transparent;
      font-weight: 700;
      color: var(--ink);
      background: var(--white);
      transition: transform var(--ease), box-shadow var(--ease), background var(--ease), border-color var(--ease), color var(--ease);
    }
    .btn:hover { transform: translateY(-2px); }
    .btn:focus-visible,
    .faq-question:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible,
    button:focus-visible,
    a:focus-visible {
      outline: 3px solid rgba(32,184,187,.32);
      outline-offset: 3px;
    }
    .btn-primary {
      background: var(--green);
      color: var(--white);
      box-shadow: 0 14px 30px rgba(22,163,106,.24);
    }
    .btn-primary:hover { background: var(--green-2); box-shadow: 0 18px 42px rgba(22,163,106,.30); }
    .btn-primary:active { transform: translateY(0); }
    .btn-outline {
      border-color: rgba(255,255,255,.58);
      color: var(--white);
      background: rgba(255,255,255,.10);
    }
    .btn-outline:hover { background: rgba(255,255,255,.18); }
    .btn-light {
      background: var(--white);
      color: var(--ink);
      border-color: rgba(255,255,255,.25);
    }
    .btn-ghost {
      border-color: var(--line);
      background: var(--white);
      color: var(--green-2);
    }

    main { overflow: hidden; }
    section { padding: 96px 0; }
    .section-soft { background: var(--soft); }
    .section-dark {
      background: var(--dark);
      color: var(--white);
      position: relative;
      overflow: hidden;
    }
    .section-dark::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(32,184,187,.08) 1px, transparent 1px),
        linear-gradient(0deg, rgba(32,184,187,.07) 1px, transparent 1px);
      background-size: 42px 42px;
      opacity: .42;
      pointer-events: none;
    }
    .section-dark .container { position: relative; z-index: 1; }

    .section-head {
      max-width: 780px;
      margin-bottom: 34px;
    }
    .section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--green-2);
      background: #eaf8f2;
      border: 1px solid #cfece0;
      border-radius: 999px;
      padding: 6px 12px;
      font-size: 13px;
      font-weight: 800;
      margin-bottom: 14px;
    }
    .section-dark .eyebrow { background: rgba(255,255,255,.10); color: #9ef0cf; border-color: rgba(255,255,255,.16); }
    h1, h2, h3, p { margin-top: 0; }
    h1 {
      font-size: 58px;
      line-height: 1.16;
      margin-bottom: 18px;
      font-weight: 800;
      max-width: 960px;
    }
    h2 {
      font-size: 40px;
      line-height: 1.22;
      margin-bottom: 14px;
      font-weight: 800;
    }
    h3 {
      font-size: 21px;
      line-height: 1.35;
      margin-bottom: 10px;
      font-weight: 750;
    }
    .lead {
      font-size: 18px;
      color: var(--muted);
      max-width: 820px;
      margin-bottom: 0;
    }
    .section-dark .lead,
    .section-dark p { color: rgba(255,255,255,.74); }

    .hero {
      min-height: calc(100vh - var(--header-h) - 76px);
      padding: 0;
      color: var(--white);
      position: relative;
      display: grid;
      align-items: stretch;
      background: var(--dark);
    }
    .hero-slider {
      position: relative;
      min-height: 620px;
      overflow: hidden;
    }
    .hero-slide {
      position: absolute;
      inset: 0;
      opacity: 0;
      transform: scale(1.02);
      transition: opacity 700ms ease, transform 1200ms ease;
      background-size: cover;
      background-position: center;
      display: flex;
      align-items: center;
    }
    .hero-slide.active {
      opacity: 1;
      transform: scale(1);
      z-index: 1;
    }
    .hero-slide::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(10,15,13,.84) 0%, rgba(10,15,13,.62) 46%, rgba(10,15,13,.32) 100%),
        linear-gradient(0deg, rgba(10,15,13,.88) 0%, transparent 42%);
    }
    .hero-content {
      position: relative;
      z-index: 2;
      width: min(var(--container), calc(100% - 64px));
      margin: 0 auto;
      padding: 74px 0 120px;
    }
    .hero-kicker {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 18px;
      color: #bdf5df;
      font-weight: 800;
    }
    .live-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--orange);
      box-shadow: 0 0 0 8px rgba(240,154,53,.20);
      animation: pulse 1.8s infinite;
    }
    @keyframes pulse {
      0%, 100% { box-shadow: 0 0 0 6px rgba(240,154,53,.18); }
      50% { box-shadow: 0 0 0 12px rgba(240,154,53,.04); }
    }
    .hero p {
      max-width: 800px;
      font-size: 19px;
      line-height: 1.85;
      color: rgba(255,255,255,.82);
      margin-bottom: 30px;
    }
    .hero-actions {
      display: flex;
      align-items: center;
      gap: 14px;
      flex-wrap: wrap;
    }
    .hero-metrics {
      margin-top: 42px;
      display: grid;
      grid-template-columns: repeat(4, minmax(130px, 1fr));
      gap: 1px;
      max-width: 760px;
      background: rgba(255,255,255,.14);
      border: 1px solid rgba(255,255,255,.16);
      border-radius: var(--radius-lg);
      overflow: hidden;
      backdrop-filter: blur(8px);
    }
    .hero-metric {
      padding: 18px;
      background: rgba(255,255,255,.08);
    }
    .hero-metric strong {
      display: block;
      color: #b7f4d8;
      font-size: 25px;
      line-height: 1.1;
      margin-bottom: 5px;
    }
    .hero-metric span { font-size: 13px; color: rgba(255,255,255,.74); }
    .slider-control {
      position: absolute;
      z-index: 3;
      left: 50%;
      bottom: 34px;
      transform: translateX(-50%);
      display: flex;
      align-items: center;
      gap: 10px;
      width: min(var(--container), calc(100% - 64px));
    }
    .slider-dot {
      width: 44px;
      height: 4px;
      border: 0;
      padding: 0;
      border-radius: 999px;
      background: rgba(255,255,255,.34);
      overflow: hidden;
    }
    .slider-dot.active { background: var(--green); }

    .countdown-strip {
      padding: 30px 0;
      background: var(--ink);
      color: var(--white);
    }
    .countdown-inner {
      display: grid;
      grid-template-columns: 1.1fr auto 1fr;
      gap: 28px;
      align-items: center;
    }
    .countdown-title strong { display: block; font-size: 22px; margin-bottom: 4px; }
    .countdown-title span { color: rgba(255,255,255,.68); }
    .timer {
      display: grid;
      grid-template-columns: repeat(4, 78px);
      gap: 10px;
    }
    .time-box {
      border: 1px solid rgba(255,255,255,.18);
      background: rgba(255,255,255,.07);
      border-radius: 14px;
      padding: 10px 8px;
      text-align: center;
    }
    .time-box b { display: block; font-size: 26px; line-height: 1.1; color: #a8f2d0; }
    .time-box span { font-size: 12px; color: rgba(255,255,255,.62); }
    .remind-form {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 10px;
    }
    .remind-form input {
      min-width: 0;
      height: 46px;
      border: 1px solid rgba(255,255,255,.18);
      border-radius: 999px;
      padding: 0 16px;
      color: var(--white);
      background: rgba(255,255,255,.08);
    }
    .remind-form input::placeholder { color: rgba(255,255,255,.55); }

    .intro-grid {
      display: grid;
      grid-template-columns: .95fr 1.05fr;
      gap: 52px;
      align-items: center;
    }
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 22px;
    }
    .tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      border: 1px solid var(--line);
      background: var(--white);
      color: var(--ink-2);
      border-radius: 999px;
      padding: 8px 12px;
      font-size: 13px;
      font-weight: 700;
    }
    .tag.green { background: #eaf8f2; border-color: #cfece0; color: var(--green-2); }
    .visual-panel {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      min-height: 430px;
      box-shadow: var(--shadow);
      background: var(--soft-2);
    }
    .visual-panel img {
      width: 100%;
      height: 430px;
      object-fit: cover;
    }
    .visual-overlay {
      position: absolute;
      left: 24px;
      right: 24px;
      bottom: 24px;
      background: rgba(255,255,255,.92);
      border: 1px solid rgba(255,255,255,.68);
      border-radius: 18px;
      padding: 18px;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      backdrop-filter: blur(10px);
    }
    .mini-stat strong { display: block; font-size: 22px; color: var(--green-2); line-height: 1.15; }
    .mini-stat span { display: block; color: var(--muted); font-size: 12px; margin-top: 4px; }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .card {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: 0 1px 0 rgba(17,24,21,.02);
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease), background var(--ease);
    }
    .card:hover {
      transform: translateY(-4px);
      border-color: rgba(22,163,106,.35);
      box-shadow: var(--shadow-sm);
    }
    .icon {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      background: #eaf8f2;
      color: var(--green-2);
      display: inline-grid;
      place-items: center;
      margin-bottom: 18px;
    }
    .icon svg { width: 22px; height: 22px; stroke: currentColor; stroke-width: 2; fill: none; }
    .card p { color: var(--muted); margin-bottom: 16px; }
    .status {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 12px;
      font-weight: 800;
      color: var(--green-2);
      background: #effaf5;
      border: 1px solid #d5eee3;
      border-radius: 999px;
      padding: 5px 9px;
    }
    .status::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: currentColor;
    }

    .product-row {
      display: grid;
      grid-template-columns: 1.15fr .85fr .85fr;
      gap: 18px;
    }
    .product-card {
      border-radius: var(--radius-lg);
      border: 1px solid var(--line);
      background: var(--white);
      padding: 26px;
      min-height: 320px;
      position: relative;
      overflow: hidden;
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }
    .product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-sm); border-color: rgba(32,184,187,.32); }
    .product-card.featured {
      background: var(--ink);
      color: var(--white);
    }
    .product-card.featured p,
    .product-card.featured li { color: rgba(255,255,255,.74); }
    .product-num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: #eaf8f2;
      color: var(--green-2);
      font-weight: 800;
      margin-bottom: 20px;
    }
    .featured .product-num { background: rgba(255,255,255,.12); color: #b8f4d7; }
    .product-card ul {
      list-style: none;
      padding: 0;
      margin: 18px 0 0;
      display: grid;
      gap: 9px;
    }
    .product-card li {
      color: var(--muted);
      display: flex;
      gap: 8px;
      align-items: flex-start;
    }
    .product-card li::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--green);
      margin-top: 10px;
      flex: 0 0 auto;
    }
    .product-link {
      display: inline-flex;
      margin-top: 24px;
      color: var(--green-2);
      font-weight: 800;
    }
    .featured .product-link { color: #b8f4d7; }

    .data-band {
      display: grid;
      grid-template-columns: 1fr 1.3fr;
      gap: 44px;
      align-items: center;
    }
    .metric-list {
      display: grid;
      gap: 18px;
    }
    .metric-line {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: 16px;
      padding: 16px;
    }
    .metric-head {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      font-weight: 800;
      margin-bottom: 10px;
    }
    .metric-head span:last-child { color: var(--green-2); }
    .bar {
      height: 8px;
      background: var(--soft-2);
      border-radius: 999px;
      overflow: hidden;
    }
    .bar i {
      display: block;
      height: 100%;
      width: var(--w);
      background: linear-gradient(90deg, var(--green), var(--cyan));
      border-radius: inherit;
    }

    .timeline {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 0;
      margin-top: 34px;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      overflow: hidden;
      background: var(--white);
    }
    .step {
      position: relative;
      padding: 28px 22px;
      min-height: 230px;
      border-right: 1px solid var(--line);
    }
    .step:last-child { border-right: 0; }
    .step b {
      display: inline-grid;
      place-items: center;
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: var(--ink);
      color: var(--white);
      margin-bottom: 34px;
    }
    .step::after {
      content: "";
      position: absolute;
      top: 46px;
      left: 70px;
      right: -22px;
      height: 2px;
      background: var(--line);
    }
    .step:last-child::after { display: none; }
    .step p { color: var(--muted); margin-bottom: 0; }

    .dark-case-grid {
      display: grid;
      grid-template-columns: .85fr 1.15fr;
      gap: 50px;
      align-items: center;
    }
    .dark-case-list {
      display: grid;
      gap: 16px;
    }
    .dark-case {
      border: 1px solid rgba(255,255,255,.14);
      border-radius: var(--radius-md);
      padding: 22px;
      background: rgba(255,255,255,.06);
    }
    .dark-case h3 { color: var(--white); }
    .dark-case p { margin-bottom: 0; }
    .map-card {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid rgba(255,255,255,.14);
      min-height: 420px;
      position: relative;
    }
    .map-card img { width: 100%; height: 420px; object-fit: cover; opacity: .72; }
    .map-card::after {
      content: "线路热力 · 车辆状态 · 异常追踪";
      position: absolute;
      left: 20px;
      bottom: 20px;
      right: 20px;
      padding: 14px 16px;
      border-radius: 14px;
      background: rgba(16,23,21,.72);
      border: 1px solid rgba(255,255,255,.16);
      color: rgba(255,255,255,.86);
      font-weight: 800;
    }

    .case-masonry {
      display: grid;
      grid-template-columns: 1.2fr .8fr 1fr;
      grid-auto-rows: 180px;
      gap: 18px;
    }
    .case-card {
      position: relative;
      overflow: hidden;
      border-radius: var(--radius-lg);
      padding: 24px;
      color: var(--white);
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      min-height: 180px;
      background: var(--ink);
    }
    .case-card:nth-child(1) { grid-row: span 2; }
    .case-card:nth-child(4) { grid-column: span 2; }
    .case-card img {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: .54;
      transition: transform 420ms ease;
    }
    .case-card:hover img { transform: scale(1.05); }
    .case-card::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(0deg, rgba(10,15,13,.86), rgba(10,15,13,.10));
      z-index: 1;
    }
    .case-card > * { position: relative; z-index: 2; }
    .case-card p { color: rgba(255,255,255,.76); margin-bottom: 12px; }
    .case-tags { display: flex; flex-wrap: wrap; gap: 8px; }
    .case-tags span {
      font-size: 12px;
      color: #c8f6df;
      background: rgba(255,255,255,.12);
      border: 1px solid rgba(255,255,255,.18);
      border-radius: 999px;
      padding: 4px 8px;
    }

    .story-track,
    .review-track {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .story-card {
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 26px;
      background: var(--white);
      min-height: 260px;
    }
    .role {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 18px;
    }
    .avatar {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: linear-gradient(135deg, #dff4ec, #dceef1);
      display: grid;
      place-items: center;
      color: var(--green-2);
      font-weight: 900;
    }
    .role span { display: block; color: var(--muted); font-size: 13px; }
    .quote {
      font-size: 18px;
      color: var(--ink-2);
      font-weight: 650;
      line-height: 1.65;
    }

    .news-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr .9fr;
      gap: 18px;
    }
    .news-card {
      border-radius: var(--radius-lg);
      overflow: hidden;
      background: var(--white);
      border: 1px solid var(--line);
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }
    .news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-sm); border-color: rgba(22,163,106,.32); }
    .news-card img {
      width: 100%;
      height: 190px;
      object-fit: cover;
    }
    .news-card.large img { height: 260px; }
    .news-body { padding: 22px; }
    .meta {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--muted);
      font-size: 13px;
      margin-bottom: 12px;
      flex-wrap: wrap;
    }
    .meta span:first-child {
      color: var(--green-2);
      font-weight: 800;
    }
    .news-body p { color: var(--muted); margin-bottom: 0; }

    .review-card {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: 0 1px 0 rgba(17,24,21,.02);
    }
    .stars {
      color: var(--orange);
      letter-spacing: 2px;
      margin-bottom: 14px;
    }
    .review-card p { color: var(--ink-2); }
    .review-card strong { display: block; margin-top: 16px; }
    .review-card span { color: var(--muted); font-size: 13px; }

    .benefit-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 14px;
      margin-bottom: 34px;
    }
    .benefit {
      border: 1px solid rgba(255,255,255,.15);
      background: rgba(255,255,255,.07);
      border-radius: 16px;
      padding: 20px;
    }
    .benefit strong { display: block; color: var(--white); margin-bottom: 8px; }
    .benefit span { color: rgba(255,255,255,.68); font-size: 14px; }

    .signup-panel {
      display: grid;
      grid-template-columns: .82fr 1.18fr;
      gap: 34px;
      align-items: start;
      padding: 34px;
      border-radius: var(--radius-lg);
      background: var(--white);
      color: var(--ink);
      box-shadow: var(--shadow);
    }
    .signup-panel .lead { color: var(--muted); }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
    }
    .field.full { grid-column: 1 / -1; }
    .field label {
      display: block;
      font-size: 13px;
      color: var(--ink-2);
      font-weight: 800;
      margin-bottom: 7px;
    }
    .field input,
    .field select,
    .field textarea {
      width: 100%;
      border: 1px solid var(--line);
      border-radius: 14px;
      min-height: 48px;
      padding: 11px 13px;
      background: #fbfdfc;
      color: var(--ink);
      transition: border-color var(--ease), box-shadow var(--ease), background var(--ease);
    }
    .field textarea { min-height: 112px; resize: vertical; }
    .field input:hover,
    .field select:hover,
    .field textarea:hover { border-color: #b8d8cb; background: var(--white); }
    .submit-row {
      grid-column: 1 / -1;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
    }
    .privacy {
      color: var(--muted);
      font-size: 13px;
      margin: 0;
      max-width: 420px;
    }
    .btn.loading {
      position: relative;
      pointer-events: none;
      color: rgba(255,255,255,.72);
    }
    .btn.loading::after {
      content: "";
      width: 16px;
      height: 16px;
      border: 2px solid rgba(255,255,255,.45);
      border-top-color: var(--white);
      border-radius: 50%;
      animation: spin .8s linear infinite;
    }
    @keyframes spin { to { transform: rotate(360deg); } }

    .partners {
      padding-top: 78px;
      padding-bottom: 78px;
      background: var(--white);
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }
    .partner-row {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
    }
    .partner-badge {
      border: 1px solid var(--line);
      background: var(--soft);
      border-radius: 999px;
      padding: 10px 15px;
      color: var(--ink-2);
      font-weight: 750;
      font-size: 14px;
    }

    .faq-wrap {
      display: grid;
      grid-template-columns: .82fr 1.18fr;
      gap: 46px;
      align-items: start;
    }
    .faq-list {
      display: grid;
      gap: 12px;
    }
    .faq-item {
      border: 1px solid var(--line);
      border-radius: 16px;
      background: var(--white);
      overflow: hidden;
    }
    .faq-question {
      width: 100%;
      min-height: 60px;
      border: 0;
      background: transparent;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 18px;
      padding: 17px 20px;
      text-align: left;
      color: var(--ink);
      font-weight: 800;
    }
    .faq-question i {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: var(--soft);
      flex: 0 0 auto;
      position: relative;
      transition: transform var(--ease), background var(--ease);
    }
    .faq-question i::before,
    .faq-question i::after {
      content: "";
      position: absolute;
      background: var(--green-2);
      left: 8px;
      right: 8px;
      top: 13px;
      height: 2px;
      border-radius: 2px;
    }
    .faq-question i::after {
      transform: rotate(90deg);
      transition: opacity var(--ease);
    }
    .faq-item.is-open .faq-question i {
      background: #eaf8f2;
      transform: rotate(180deg);
    }
    .faq-item.is-open .faq-question i::after { opacity: 0; }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 240ms ease;
    }
    .faq-answer p {
      margin: 0;
      padding: 0 20px 20px;
      color: var(--muted);
    }

    .site-footer {
      background: #0b100f;
      color: rgba(255,255,255,.78);
      padding: 58px 0 28px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr repeat(3, .8fr);
      gap: 34px;
      padding-bottom: 36px;
      border-bottom: 1px solid rgba(255,255,255,.12);
    }
    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      color: var(--white);
      font-weight: 900;
      font-size: 20px;
      margin-bottom: 16px;
    }
    .footer-col h3 {
      color: var(--white);
      font-size: 16px;
      margin-bottom: 14px;
    }
    .footer-col a,
    .footer-col span {
      display: block;
      color: rgba(255,255,255,.66);
      margin: 8px 0;
      font-size: 14px;
    }
    .footer-col a:hover { color: #a8f2d0; }
    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      flex-wrap: wrap;
      padding-top: 24px;
      color: rgba(255,255,255,.52);
      font-size: 13px;
    }

    .mobile-panel {
      display: none;
    }

    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: .01ms !important;
      }
    }

    @media (max-width: 1080px) {
      .container,
      .hero-content,
      .slider-control { width: min(var(--container), calc(100% - 48px)); }
      .topbar { display: none; }
      .nav-row { height: 70px; }
      .primary-nav {
        position: fixed;
        top: 70px;
        right: 24px;
        width: min(360px, calc(100vw - 48px));
        max-height: calc(100vh - 92px);
        overflow-y: auto;
        display: none;
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        padding: 16px;
        border: 1px solid var(--line);
        border-radius: 20px;
        background: var(--white);
        box-shadow: var(--shadow);
      }
      .primary-nav.is-open { display: flex; }
      .primary-nav a { padding: 13px 14px; border-radius: 12px; }
      .primary-nav a.active::before { left: auto; right: 14px; }
      .menu-toggle { display: inline-block; }
      .nav-actions .btn { display: none; }
      h1 { font-size: 46px; }
      h2 { font-size: 34px; }
      .hero-slider { min-height: 580px; }
      .countdown-inner,
      .intro-grid,
      .data-band,
      .dark-case-grid,
      .signup-panel,
      .faq-wrap {
        grid-template-columns: 1fr;
      }
      .feature-grid { grid-template-columns: repeat(2, 1fr); }
      .product-row { grid-template-columns: 1fr; }
      .timeline { grid-template-columns: 1fr; }
      .step { border-right: 0; border-bottom: 1px solid var(--line); min-height: auto; }
      .step:last-child { border-bottom: 0; }
      .step::after { left: 40px; top: 66px; bottom: -20px; width: 2px; height: auto; right: auto; }
      .case-masonry { grid-template-columns: 1fr 1fr; }
      .case-card:nth-child(1),
      .case-card:nth-child(4) { grid-column: auto; grid-row: auto; }
      .story-track,
      .review-track,
      .news-grid { grid-template-columns: 1fr 1fr; }
      .benefit-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 760px) {
      .container,
      .hero-content,
      .slider-control { width: calc(100% - 36px); }
      section { padding: 66px 0; }
      .logo { min-width: 0; }
      .logo-text strong { font-size: 18px; }
      .logo-text span { display: none; }
      h1 { font-size: 37px; }
      h2 { font-size: 29px; }
      .lead { font-size: 16px; }
      .hero-slider { min-height: 610px; }
      .hero-content { padding: 60px 0 108px; }
      .hero p { font-size: 17px; }
      .hero-metrics { grid-template-columns: repeat(2, 1fr); }
      .timer { grid-template-columns: repeat(4, minmax(58px, 1fr)); width: 100%; }
      .time-box b { font-size: 22px; }
      .remind-form { grid-template-columns: 1fr; }
      .feature-grid,
      .story-track,
      .review-track,
      .news-grid,
      .benefit-grid,
      .case-masonry,
      .footer-grid { grid-template-columns: 1fr; }
      .visual-overlay { grid-template-columns: 1fr; position: static; border-radius: 0; }
      .visual-panel img { height: 300px; }
      .form-grid { grid-template-columns: 1fr; }
      .signup-panel { padding: 22px; }
      .footer-bottom { flex-direction: column; }
      .review-track {
        display: flex;
        overflow-x: auto;
        padding-bottom: 8px;
        scroll-snap-type: x mandatory;
      }
      .review-card { min-width: 86%; scroll-snap-align: start; }
    }

    @media (max-width: 520px) {
      .brand-mini span,
      .top-links { display: none; }
      .nav-row { gap: 12px; }
      .mark { width: 32px; height: 32px; }
      h1 { font-size: 34px; }
      .hero-actions .btn { width: 100%; }
      .hero-metric { padding: 14px; }
      .hero-metric strong { font-size: 21px; }
      .section-head { margin-bottom: 26px; }
      .card, .product-card, .story-card, .review-card { padding: 20px; }
      .countdown-title strong { font-size: 20px; }
      .timer { gap: 6px; }
      .time-box { padding: 9px 5px; }
    }

/* roulang page: category1 */
:root{--ink:#111815;--ink-2:#26302d;--muted:#68756f;--soft:#f3f7f5;--soft-2:#eaf2ef;--line:#dce6e1;--white:#fff;--green:#16a36a;--green-2:#0d7f5b;--cyan:#20b8bb;--orange:#f09a35;--dark:#101715;--dark-2:#18221f;--shadow:0 18px 48px rgba(17,24,21,.1);--shadow-sm:0 10px 28px rgba(17,24,21,.07);--radius-lg:22px;--radius-md:16px;--radius-sm:12px;--container:1220px;--ease:180ms ease}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",Arial,sans-serif;color:var(--ink);background:var(--white);line-height:1.75;letter-spacing:0;overflow-x:hidden}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button,input,select,textarea{font:inherit}button{cursor:pointer}.container{width:min(var(--container),calc(100% - 64px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);border-bottom:1px solid rgba(220,230,225,.72);transition:box-shadow var(--ease),background var(--ease)}.site-header.is-scrolled{background:rgba(255,255,255,.98);box-shadow:0 12px 34px rgba(17,24,21,.08)}
.topbar{border-bottom:1px solid var(--line);color:var(--muted);font-size:13px}.topbar-inner{height:42px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand-mini{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700}.top-meta{display:flex;gap:22px}.top-cta{color:var(--green-2);font-weight:700}
.mark{width:12px;height:12px;border-radius:3px 8px 3px 8px;background:var(--green);display:inline-block;transform:rotate(-12deg)}.nav-row{height:74px;display:flex;align-items:center;justify-content:space-between;gap:22px}.logo{display:flex;align-items:center;gap:12px;min-width:182px}.logo-text{display:flex;flex-direction:column;line-height:1.15}.logo-text strong{font-size:20px}.logo-text span{color:var(--muted);font-size:12px;margin-top:4px}.primary-nav{display:flex;align-items:center;gap:4px;flex:1;justify-content:center}.primary-nav a{position:relative;padding:13px 12px;border-radius:999px;color:var(--ink-2);font-size:15px;font-weight:600;transition:background var(--ease),color var(--ease);white-space:nowrap}.primary-nav a:hover,.primary-nav a:focus{background:var(--soft);color:var(--green-2);outline:none}.primary-nav a.active{color:var(--green-2);background:#edf8f3}.primary-nav a.active:before{content:"";width:6px;height:6px;background:var(--green);border-radius:50%;position:absolute;left:7px;top:50%;transform:translateY(-50%)}.nav-actions{display:flex;align-items:center;gap:10px}.menu-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--white);color:var(--ink)}.menu-toggle span{display:block;width:18px;height:2px;background:currentColor;margin:5px auto;border-radius:2px;transition:transform var(--ease),opacity var(--ease)}.menu-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}.menu-toggle.is-open span:nth-child(2){opacity:0}.menu-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:12px 18px;border-radius:999px;border:1px solid transparent;font-weight:700;color:var(--ink);background:var(--white);transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease)}.btn:hover{transform:translateY(-2px)}.btn:focus-visible,.faq-question:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,a:focus-visible{outline:3px solid rgba(32,184,187,.32);outline-offset:3px}.btn-primary{background:var(--green);color:var(--white);box-shadow:0 14px 30px rgba(22,163,106,.24)}.btn-primary:hover{background:var(--green-2)}.btn-ghost{border-color:var(--line);color:var(--green-2)}
main{overflow:hidden}section{padding:92px 0}.section-soft{background:var(--soft)}.section-dark{background:var(--dark);color:var(--white);position:relative;overflow:hidden}.section-dark:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(32,184,187,.08) 1px,transparent 1px),linear-gradient(0deg,rgba(32,184,187,.07) 1px,transparent 1px);background-size:42px 42px;opacity:.42;pointer-events:none}.section-dark .container{position:relative;z-index:1}.section-head{max-width:780px;margin-bottom:34px}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--green-2);font-weight:800;font-size:13px;letter-spacing:1px}.eyebrow:before{content:"";width:24px;height:2px;background:var(--green)}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(38px,5vw,62px);line-height:1.18;margin-bottom:20px;letter-spacing:0}h2{font-size:clamp(28px,3.2vw,42px);line-height:1.25;margin:10px 0 15px}h3{line-height:1.35}.section-head p,.intro-copy p{color:var(--muted);font-size:16px}
.page-head{padding:72px 0 54px;background:var(--soft);border-bottom:1px solid var(--line)}.head-layout{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(330px,.8fr);gap:70px;align-items:center}.head-layout h1{max-width:700px}.head-layout p{max-width:690px;color:var(--muted);font-size:17px}.signal-panel{background:var(--dark);color:var(--white);border-radius:var(--radius-lg);padding:26px;box-shadow:var(--shadow);position:relative}.signal-panel:after{content:"";display:block;height:70px;margin-top:20px;background:linear-gradient(125deg,transparent 5%,var(--cyan) 5.5%,var(--cyan) 6%,transparent 6.5%),linear-gradient(170deg,transparent 35%,var(--green) 35.5%,var(--green) 36%,transparent 36.5%);border-bottom:1px solid rgba(255,255,255,.2)}.panel-top{display:flex;justify-content:space-between;color:#b7ccc4;font-size:13px}.live{color:#73e4a9}.live:before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--green);margin-right:7px}.panel-number{font-size:36px;font-weight:800;margin-top:13px}.panel-note{font-size:13px;color:#b7ccc4}
.filter-bar{padding:22px 0;border-bottom:1px solid var(--line);background:var(--white)}.filters{display:flex;align-items:center;gap:10px;overflow-x:auto;scrollbar-width:none}.filters::-webkit-scrollbar{display:none}.filter-label{font-weight:800;margin-right:8px;white-space:nowrap}.tag{display:inline-flex;align-items:center;white-space:nowrap;padding:7px 13px;border-radius:999px;background:var(--soft);color:var(--muted);font-size:13px;border:1px solid transparent}.tag.active,.tag:hover{background:#e3f5ed;color:var(--green-2);border-color:#b8e4d0}
.list-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:58px}.side-note{border-left:3px solid var(--green);padding:4px 0 4px 20px;color:var(--muted);position:sticky;top:145px;height:max-content}.side-note strong{display:block;color:var(--ink);font-size:20px;margin-bottom:8px}.dispatch-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.dispatch-card{border:1px solid var(--line);border-radius:var(--radius-md);padding:25px;background:var(--white);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease)}.dispatch-card:hover{transform:translateY(-4px);border-color:#9bd9bf;box-shadow:var(--shadow-sm)}.card-index{color:var(--green);font-weight:800;font-size:13px}.dispatch-card h3{font-size:21px;margin:9px 0 8px}.dispatch-card p{color:var(--muted);font-size:14px;margin-bottom:17px}.card-foot{display:flex;justify-content:space-between;align-items:center;gap:12px}.card-foot .tag{padding:5px 9px;font-size:12px}.text-link{color:var(--green-2);font-weight:800;font-size:14px}.text-link:after{content:" →";transition:padding var(--ease)}.text-link:hover:after{padding-left:4px}
.scenes{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.scene{padding:24px 20px;border-top:2px solid var(--green);background:var(--white);box-shadow:var(--shadow-sm)}.scene-icon{width:38px;height:38px;border-radius:11px;background:var(--soft-2);color:var(--green-2);display:grid;place-items:center;font-weight:800;margin-bottom:17px}.scene h3{font-size:18px;margin-bottom:7px}.scene p{font-size:14px;color:var(--muted);margin:0}
.compare-wrap{overflow-x:auto}.compare{width:100%;min-width:700px;border-collapse:collapse;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden}.compare th,.compare td{text-align:left;padding:17px 20px;border-bottom:1px solid var(--line);font-size:14px}.compare th{background:var(--soft-2);color:var(--ink);font-size:13px}.compare tr:last-child td{border-bottom:0}.yes{color:var(--green-2);font-weight:800}.param-note{color:var(--muted);font-size:13px;margin-top:13px}
.related{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.related a{display:flex;justify-content:space-between;align-items:center;border:1px solid var(--line);padding:20px;border-radius:var(--radius-md);background:var(--white);font-weight:800;transition:all var(--ease)}.related a:hover{border-color:var(--green);color:var(--green-2);transform:translateY(-3px)}.related small{display:block;color:var(--muted);font-weight:400;margin-top:4px}
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px 38px}.faq-item{border-bottom:1px solid var(--line)}.faq-question{width:100%;padding:20px 0;border:0;background:none;text-align:left;font-weight:800;color:var(--ink);display:flex;justify-content:space-between;gap:18px}.faq-question span:last-child{font-size:22px;color:var(--green);transition:transform var(--ease)}.faq-answer{display:grid;grid-template-rows:0fr;transition:grid-template-rows 220ms ease}.faq-answer p{overflow:hidden;color:var(--muted);font-size:14px;margin:0}.faq-item.open .faq-answer{grid-template-rows:1fr}.faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
.cta-band{padding:58px 0;background:var(--dark-2);color:var(--white)}.cta-layout{display:flex;align-items:center;justify-content:space-between;gap:30px}.cta-layout p{color:#b7ccc4;margin:8px 0 0}.site-footer{background:var(--dark);color:var(--white);padding:68px 0 22px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px}.footer-brand{font-weight:800;font-size:19px;display:flex;align-items:center;gap:10px}.footer-col p{color:#a9bbb4;font-size:14px;max-width:310px;margin-top:17px}.footer-col h3{font-size:15px;margin:0 0 15px}.footer-col a,.footer-col span{display:block;color:#a9bbb4;font-size:14px;margin:8px 0}.footer-col a:hover{color:#7be0ad}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:48px;padding-top:19px;display:flex;justify-content:space-between;gap:15px;color:#81958d;font-size:12px}
@media(max-width:1024px){.primary-nav a{padding-left:8px;padding-right:8px;font-size:13px}.head-layout{gap:35px}.scenes{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){.container{width:min(var(--container),calc(100% - 40px))}.topbar{display:none}.nav-row{height:68px}.logo{min-width:0}.logo-text strong{font-size:17px}.logo-text span{font-size:11px}.primary-nav{position:fixed;top:68px;left:20px;right:20px;display:none;flex-direction:column;align-items:stretch;justify-content:flex-start;padding:12px;background:var(--white);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);z-index:10}.primary-nav.is-open{display:flex}.primary-nav a{padding:14px 16px}.nav-actions .btn{display:none}.menu-toggle{display:block}section{padding:68px 0}.page-head{padding:52px 0 42px}.head-layout{grid-template-columns:1fr;gap:28px}.list-layout{grid-template-columns:1fr;gap:28px}.side-note{position:static}.dispatch-list{grid-template-columns:1fr}.faq-grid{grid-template-columns:1fr}.related{grid-template-columns:1fr}.cta-layout{display:block}.cta-layout .btn{margin-top:22px}.footer-grid{grid-template-columns:repeat(2,1fr)}.footer-bottom{display:block}.footer-bottom span{display:block;margin:6px 0}}
@media(max-width:520px){.container{width:calc(100% - 36px)}h1{font-size:38px}.head-layout p{font-size:15px}.signal-panel{padding:21px}.scenes{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;gap:28px}.filters{margin-right:-18px;padding-right:18px}.compare th,.compare td{padding:14px 15px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}

/* roulang page: category2 */
:root {
      --ink: #111815;
      --ink-2: #26302d;
      --muted: #68756f;
      --soft: #f3f7f5;
      --soft-2: #eaf2ef;
      --line: #dce6e1;
      --white: #ffffff;
      --green: #16a36a;
      --green-2: #0d7f5b;
      --cyan: #20b8bb;
      --orange: #f09a35;
      --red: #d8614d;
      --dark: #101715;
      --dark-2: #18221f;
      --shadow: 0 18px 48px rgba(17, 24, 21, .10);
      --shadow-sm: 0 10px 28px rgba(17, 24, 21, .07);
      --radius-lg: 22px;
      --radius-md: 16px;
      --radius-sm: 12px;
      --container: 1220px;
      --ease: 180ms ease;
      --header-h: 118px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--white);
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", Arial, sans-serif;
      line-height: 1.75;
      letter-spacing: 0;
      overflow-x: hidden;
    }
    h1, h2, h3, h4, p { margin-top: 0; }
    h1, h2, h3, h4 { line-height: 1.2; }
    a { color: inherit; text-decoration: none; }
    img { display: block; max-width: 100%; }
    button, input, select, textarea { font: inherit; }
    button { cursor: pointer; }
    .container {
      width: min(var(--container), calc(100% - 64px));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255,255,255,.94);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(220,230,225,.8);
      transition: box-shadow var(--ease), background var(--ease);
    }
    .site-header.is-scrolled {
      background: rgba(255,255,255,.98);
      box-shadow: 0 12px 34px rgba(17,24,21,.08);
    }
    .topbar { border-bottom: 1px solid var(--line); color: var(--muted); font-size: 13px; }
    .topbar-inner {
      height: 42px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }
    .brand-mini { display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 700; }
    .brand-mini .mark, .footer-brand .mark {
      width: 18px;
      height: 18px;
      display: inline-block;
      position: relative;
      background: var(--green);
      border-radius: 5px 9px 5px 9px;
      transform: rotate(-12deg);
    }
    .brand-mini .mark::after, .footer-brand .mark::after {
      content: "";
      position: absolute;
      width: 6px;
      height: 6px;
      right: 3px;
      bottom: 3px;
      border-radius: 50%;
      background: var(--white);
    }
    .topbar-info { display: flex; align-items: center; gap: 22px; }
    .topbar-info span + span { padding-left: 22px; border-left: 1px solid var(--line); }
    .top-cta { color: var(--green-2); font-weight: 700; white-space: nowrap; }
    .nav-row {
      height: 74px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
    }
    .logo { display: flex; align-items: center; gap: 12px; min-width: 182px; }
    .logo .mark {
      width: 31px;
      height: 31px;
      flex: 0 0 auto;
      position: relative;
      background: var(--green);
      border-radius: 8px 15px 8px 15px;
      transform: rotate(-12deg);
    }
    .logo .mark::before, .logo .mark::after {
      content: "";
      position: absolute;
      border-radius: 50%;
      background: var(--white);
    }
    .logo .mark::before { width: 7px; height: 7px; left: 7px; top: 7px; }
    .logo .mark::after { width: 7px; height: 7px; right: 6px; bottom: 6px; }
    .logo-text { display: flex; flex-direction: column; line-height: 1.15; }
    .logo-text strong { font-size: 20px; }
    .logo-text span { color: var(--muted); font-size: 12px; margin-top: 4px; }
    .primary-nav {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 4px;
      flex: 1;
    }
    .primary-nav a {
      position: relative;
      padding: 13px 12px;
      border-radius: 999px;
      color: var(--ink-2);
      font-size: 15px;
      font-weight: 600;
      white-space: nowrap;
      transition: background var(--ease), color var(--ease);
    }
    .primary-nav a:hover, .primary-nav a:focus { background: var(--soft); color: var(--green-2); outline: none; }
    .primary-nav a.active { color: var(--green-2); background: #edf8f3; }
    .primary-nav a.active::before {
      content: "";
      position: absolute;
      width: 6px;
      height: 6px;
      left: 7px;
      top: 50%;
      transform: translateY(-50%);
      border-radius: 50%;
      background: var(--green);
    }
    .nav-actions { display: flex; align-items: center; gap: 10px; }
    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border: 1px solid var(--line);
      border-radius: 12px;
      color: var(--ink);
      background: var(--white);
    }
    .menu-toggle span {
      display: block;
      width: 18px;
      height: 2px;
      margin: 5px auto;
      border-radius: 2px;
      background: currentColor;
      transition: transform var(--ease), opacity var(--ease);
    }
    .menu-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .menu-toggle.is-open span:nth-child(2) { opacity: 0; }
    .menu-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 12px 18px;
      border: 1px solid transparent;
      border-radius: 999px;
      color: var(--ink);
      background: var(--white);
      font-weight: 700;
      transition: transform var(--ease), box-shadow var(--ease), background var(--ease), border-color var(--ease), color var(--ease);
    }
    .btn:hover { transform: translateY(-2px); }
    .btn:focus-visible, .faq-question:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, a:focus-visible, button:focus-visible {
      outline: 3px solid rgba(32,184,187,.32);
      outline-offset: 3px;
    }
    .btn-primary { color: var(--white); background: var(--green); box-shadow: 0 14px 30px rgba(22,163,106,.24); }
    .btn-primary:hover { background: var(--green-2); box-shadow: 0 18px 42px rgba(22,163,106,.3); }
    .btn-primary:active { transform: translateY(0); }
    .btn-ghost { color: var(--green-2); background: var(--white); border-color: var(--line); }
    .btn-ghost:hover { border-color: var(--green); background: #f7fcfa; }
    .btn-outline { color: var(--white); background: transparent; border-color: rgba(255,255,255,.5); }
    .btn-outline:hover { background: rgba(255,255,255,.12); border-color: var(--white); }

    main { overflow: hidden; }
    section { padding: 96px 0; }
    .section-soft { background: var(--soft); }
    .section-dark { position: relative; overflow: hidden; color: var(--white); background: var(--dark); }
    .section-dark::before {
      content: "";
      position: absolute;
      inset: 0;
      opacity: .4;
      pointer-events: none;
      background-image: linear-gradient(90deg, rgba(32,184,187,.08) 1px, transparent 1px), linear-gradient(0deg, rgba(32,184,187,.07) 1px, transparent 1px);
      background-size: 42px 42px;
    }
    .section-dark .container { position: relative; z-index: 1; }
    .section-head { max-width: 760px; margin-bottom: 34px; }
    .section-head.center { margin-right: auto; margin-left: auto; text-align: center; }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 15px;
      color: var(--green-2);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: .08em;
    }
    .eyebrow::before { content: ""; width: 24px; height: 2px; background: var(--green); }
    .section-dark .eyebrow { color: #70d7b1; }
    .section-head h2 { margin-bottom: 12px; font-size: clamp(30px, 4vw, 44px); }
    .section-head p { margin-bottom: 0; color: var(--muted); font-size: 17px; }
    .section-dark .section-head p { color: #b2c1bc; }

    .category-head {
      padding: 62px 0 54px;
      background: #f7faf8;
      border-bottom: 1px solid var(--line);
    }
    .category-intro {
      display: grid;
      grid-template-columns: minmax(0, 1.25fr) minmax(350px, .75fr);
      align-items: end;
      gap: 58px;
    }
    .crumb { margin-bottom: 18px; color: var(--muted); font-size: 14px; }
    .crumb a { color: var(--green-2); }
    .category-intro h1 { max-width: 720px; margin-bottom: 18px; font-size: clamp(38px, 5vw, 62px); letter-spacing: 0; }
    .category-intro .lead { max-width: 680px; margin: 0; color: var(--muted); font-size: 18px; }
    .fleet-panel {
      min-height: 204px;
      padding: 22px;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: var(--white);
      box-shadow: var(--shadow-sm);
    }
    .panel-top { display: flex; align-items: center; justify-content: space-between; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
    .panel-top strong { font-size: 15px; }
    .live-status { display: inline-flex; align-items: center; gap: 7px; color: var(--green-2); font-size: 13px; font-weight: 700; }
    .live-status::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 5px rgba(22,163,106,.12); }
    .fleet-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; padding-top: 20px; }
    .fleet-stat b { display: block; color: var(--ink); font-size: 27px; line-height: 1.2; }
    .fleet-stat span { color: var(--muted); font-size: 12px; }
    .mini-bars { display: flex; align-items: end; gap: 5px; height: 42px; margin-top: 13px; }
    .mini-bars i { display: block; width: 10px; border-radius: 3px 3px 0 0; background: var(--cyan); }
    .mini-bars i:nth-child(1) { height: 38%; }
    .mini-bars i:nth-child(2) { height: 60%; }
    .mini-bars i:nth-child(3) { height: 48%; }
    .mini-bars i:nth-child(4) { height: 82%; }
    .mini-bars i:nth-child(5) { height: 68%; }
    .mini-bars i:nth-child(6) { height: 94%; }

    .filter-section { padding: 24px 0; border-bottom: 1px solid var(--line); background: var(--white); }
    .filter-bar { display: flex; align-items: center; gap: 15px; min-width: 0; }
    .filter-label { flex: 0 0 auto; color: var(--muted); font-size: 13px; font-weight: 700; }
    .filter-list { display: flex; align-items: center; gap: 9px; overflow-x: auto; scrollbar-width: none; }
    .filter-list::-webkit-scrollbar { display: none; }
    .filter-chip {
      flex: 0 0 auto;
      padding: 8px 14px;
      border: 1px solid var(--line);
      border-radius: 999px;
      color: var(--ink-2);
      background: var(--white);
      font-size: 14px;
      transition: color var(--ease), border-color var(--ease), background var(--ease);
    }
    .filter-chip:hover, .filter-chip.is-selected { color: var(--green-2); border-color: #9ad8bf; background: #edf8f3; }

    .list-section { padding-bottom: 82px; }
    .fleet-layout { display: grid; grid-template-columns: 230px minmax(0, 1fr); gap: 46px; align-items: start; }
    .side-note { position: sticky; top: 145px; }
    .side-note h3 { margin-bottom: 12px; font-size: 18px; }
    .side-note p { margin-bottom: 22px; color: var(--muted); font-size: 14px; }
    .side-index { padding: 0; margin: 0; list-style: none; border-top: 1px solid var(--line); }
    .side-index li { border-bottom: 1px solid var(--line); }
    .side-index a { display: flex; justify-content: space-between; padding: 13px 0; color: var(--ink-2); font-size: 14px; transition: color var(--ease), padding var(--ease); }
    .side-index a:hover { padding-left: 5px; color: var(--green-2); }
    .side-index a span { color: var(--muted); }
    .fleet-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
    .fleet-card {
      position: relative;
      min-height: 244px;
      padding: 25px;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      background: var(--white);
      transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
    }
    .fleet-card:hover { transform: translateY(-3px); border-color: #a8d9c3; box-shadow: var(--shadow-sm); }
    .fleet-card.featured { grid-column: span 2; display: grid; grid-template-columns: 1fr 1fr; gap: 28px; background: var(--dark); color: var(--white); border-color: var(--dark); }
    .fleet-card.featured p, .fleet-card.featured .card-meta { color: #b8c8c1; }
    .card-number { color: var(--green-2); font-size: 13px; font-weight: 800; letter-spacing: .12em; }
    .fleet-card.featured .card-number { color: #71d8b3; }
    .fleet-card h3 { margin: 11px 0 10px; font-size: 22px; }
    .fleet-card p { margin-bottom: 21px; color: var(--muted); font-size: 14px; line-height: 1.75; }
    .card-meta { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 18px; color: var(--muted); font-size: 12px; }
    .card-meta span { padding: 4px 9px; border-radius: 999px; background: var(--soft); }
    .fleet-card.featured .card-meta span { background: rgba(255,255,255,.1); }
    .text-link { display: inline-flex; align-items: center; gap: 8px; color: var(--green-2); font-size: 14px; font-weight: 800; }
    .text-link::after { content: "→"; transition: transform var(--ease); }
    .text-link:hover::after { transform: translateX(4px); }
    .fleet-card.featured .text-link { color: #7ee0b9; }
    .card-visual { align-self: center; min-height: 170px; padding: 18px; border: 1px solid rgba(126,224,185,.24); border-radius: var(--radius-sm); background: rgba(255,255,255,.06); }
    .vehicle-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.12); font-size: 13px; }
    .vehicle-row:last-child { border-bottom: 0; }
    .vehicle-name { display: flex; align-items: center; gap: 8px; }
    .vehicle-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); }
    .vehicle-dot.orange { background: var(--orange); }
    .vehicle-state { color: #9ee0c2; font-size: 12px; }
    .vehicle-state.warn { color: #f7c17e; }
    .list-more { margin-top: 30px; text-align: center; }

    .scenario-section { background: var(--soft); }
    .scenario-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 70px; align-items: start; }
    .scenario-layout .section-head { margin-bottom: 0; }
    .scenario-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; border-top: 1px solid var(--line); }
    .scenario-item { padding: 22px 18px 22px 0; border-bottom: 1px solid var(--line); }
    .scenario-item:nth-child(odd) { border-right: 1px solid var(--line); padding-right: 24px; }
    .scenario-item:nth-child(even) { padding-left: 24px; }
    .scenario-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 36px;
      height: 36px;
      margin-bottom: 13px;
      border-radius: 10px;
      color: var(--green-2);
      background: var(--white);
      font-size: 17px;
      font-weight: 800;
    }
    .scenario-item h3 { margin-bottom: 7px; font-size: 17px; }
    .scenario-item p { margin: 0; color: var(--muted); font-size: 14px; }

    .compare-section { padding: 86px 0; }
    .compare-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-md); }
    .compare-table { width: 100%; min-width: 720px; border-collapse: collapse; background: var(--white); }
    .compare-table th, .compare-table td { padding: 17px 20px; text-align: left; border-bottom: 1px solid var(--line); font-size: 14px; }
    .compare-table th { color: var(--muted); background: var(--soft); font-size: 13px; font-weight: 800; }
    .compare-table th:not(:first-child) { color: var(--green-2); }
    .compare-table tr:last-child td { border-bottom: 0; }
    .compare-table td:first-child { width: 25%; color: var(--ink-2); font-weight: 700; }
    .check { color: var(--green-2); font-weight: 800; }
    .neutral { color: var(--muted); }

    .related-section { padding-top: 80px; background: #f7faf8; }
    .related-grid { display: grid; grid-template-columns: 1.25fr .9fr .9fr; gap: 16px; }
    .related-card {
      display: flex;
      min-height: 170px;
      flex-direction: column;
      justify-content: space-between;
      padding: 23px;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      background: var(--white);
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }
    .related-card:first-child { background: var(--dark); color: var(--white); border-color: var(--dark); }
    .related-card:hover { transform: translateY(-3px); border-color: #a8d9c3; box-shadow: var(--shadow-sm); }
    .related-card small { color: var(--green-2); font-weight: 800; }
    .related-card:first-child small { color: #7ee0b9; }
    .related-card h3 { margin: 12px 0 8px; font-size: 20px; }
    .related-card p { margin: 0; color: var(--muted); font-size: 14px; }
    .related-card:first-child p { color: #b8c8c1; }
    .related-card .text-link { margin-top: 18px; }

    .faq-section { padding-bottom: 90px; }
    .faq-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 78px; }
    .faq-layout .section-head { margin-bottom: 0; }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      min-height: 68px;
      padding: 15px 0;
      border: 0;
      color: var(--ink);
      background: transparent;
      text-align: left;
      font-size: 16px;
      font-weight: 700;
    }
    .faq-question span:last-child { color: var(--green-2); font-size: 24px; font-weight: 400; transition: transform var(--ease); }
    .faq-item.is-open .faq-question span:last-child { transform: rotate(45deg); }
    .faq-answer { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 220ms ease; }
    .faq-answer > div { overflow: hidden; }
    .faq-answer p { padding: 0 38px 19px 0; margin: 0; color: var(--muted); font-size: 14px; }
    .faq-item.is-open .faq-answer { grid-template-rows: 1fr; }

    .contact-section { padding-top: 0; }
    .trust-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1px;
      margin-bottom: 0;
      border: 1px solid rgba(126,224,185,.2);
      background: rgba(126,224,185,.2);
    }
    .trust-item { min-height: 105px; padding: 22px; background: var(--dark-2); }
    .trust-item strong { display: block; margin-bottom: 5px; color: var(--white); font-size: 16px; }
    .trust-item span { color: #a9bbb4; font-size: 13px; }
    .contact-box {
      display: grid;
      grid-template-columns: .86fr 1.14fr;
      gap: 60px;
      padding: 65px 7%;
      color: var(--white);
      background: var(--dark);
      border-top: 1px solid rgba(255,255,255,.09);
    }
    .contact-box h2 { max-width: 480px; margin-bottom: 16px; font-size: clamp(30px, 4vw, 44px); }
    .contact-box p { max-width: 440px; margin-bottom: 24px; color: #b8c8c1; }
    .contact-details { display: grid; gap: 10px; color: #d9e5df; font-size: 14px; }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .field { display: grid; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    .field label { color: #bed0c8; font-size: 13px; }
    .field input, .field select, .field textarea {
      width: 100%;
      border: 1px solid rgba(255,255,255,.18);
      border-radius: 10px;
      padding: 12px 13px;
      color: var(--white);
      background: rgba(255,255,255,.08);
    }
    .field textarea { min-height: 104px; resize: vertical; }
    .field input::placeholder, .field textarea::placeholder { color: #83958d; }
    .field select option { color: var(--ink); }
    .form-submit { grid-column: 1 / -1; display: flex; align-items: center; gap: 14px; margin-top: 4px; }
    .form-message { color: #8ee1bb; font-size: 13px; }

    .site-footer { padding: 58px 0 22px; color: #aebdb7; background: #0b100e; }
    .footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.1fr; gap: 42px; padding-bottom: 42px; }
    .footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; color: var(--white); font-size: 18px; font-weight: 800; }
    .footer-col p { max-width: 310px; margin: 0; font-size: 13px; line-height: 1.8; }
    .footer-col h3 { margin: 0 0 15px; color: var(--white); font-size: 14px; }
    .footer-col a, .footer-col span { display: block; margin: 7px 0; color: #aebdb7; font-size: 13px; transition: color var(--ease); }
    .footer-col a:hover { color: #75d9b0; }
    .footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.12); color: #718079; font-size: 12px; }

    @media (max-width: 1100px) {
      .primary-nav a { padding-right: 8px; padding-left: 8px; font-size: 14px; }
      .logo { min-width: 170px; }
      .fleet-layout { gap: 28px; }
      .scenario-layout, .faq-layout { gap: 45px; }
    }
    @media (max-width: 900px) {
      .topbar-info span:nth-child(2) { display: none; }
      .nav-row { height: 68px; }
      .primary-nav {
        position: fixed;
        z-index: 110;
        top: 0;
        right: -100%;
        display: flex;
        width: min(340px, 88vw);
        height: 100vh;
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        gap: 5px;
        padding: 92px 22px 25px;
        background: var(--white);
        box-shadow: -18px 0 44px rgba(17,24,21,.16);
        transition: right 220ms ease;
      }
      .primary-nav.is-open { right: 0; }
      .primary-nav::before {
        content: "智慧出行软件";
        position: absolute;
        top: 33px;
        left: 24px;
        color: var(--ink);
        font-size: 18px;
        font-weight: 800;
      }
      .primary-nav a { padding: 15px 16px; }
      .menu-toggle { display: block; }
      .nav-actions .btn { display: none; }
      .category-intro { grid-template-columns: 1fr; gap: 32px; }
      .fleet-layout { grid-template-columns: 1fr; }
      .side-note { position: static; }
      .side-index { display: flex; flex-wrap: wrap; gap: 8px; border: 0; }
      .side-index li { border: 0; }
      .side-index a { padding: 8px 12px; border: 1px solid var(--line); border-radius: 999px; background: var(--white); }
      .side-index a span { display: none; }
      .scenario-layout, .faq-layout { grid-template-columns: 1fr; }
      .trust-strip { grid-template-columns: repeat(2, 1fr); }
      .contact-box { grid-template-columns: 1fr; gap: 35px; }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 600px) {
      .container { width: min(var(--container), calc(100% - 36px)); }
      .topbar-inner { height: 38px; }
      .topbar-info { display: none; }
      .top-cta { margin-left: auto; }
      .logo-text strong { font-size: 17px; }
      .logo-text span { font-size: 11px; }
      .logo { min-width: 0; }
      section { padding: 68px 0; }
      .category-head { padding: 42px 0 38px; }
      .category-intro h1 { font-size: 40px; }
      .category-intro .lead { font-size: 16px; }
      .fleet-panel { min-height: 185px; }
      .fleet-stats { gap: 8px; }
      .fleet-stat b { font-size: 22px; }
      .fleet-list { grid-template-columns: 1fr; }
      .fleet-card.featured { display: block; grid-column: auto; }
      .card-visual { margin-top: 25px; }
      .filter-bar { align-items: flex-start; flex-direction: column; }
      .filter-list { width: 100%; }
      .scenario-grid { grid-template-columns: 1fr; }
      .scenario-item, .scenario-item:nth-child(odd), .scenario-item:nth-child(even) { padding: 20px 0; border-right: 0; }
      .related-grid { grid-template-columns: 1fr; }
      .related-card:first-child { min-height: 190px; }
      .trust-strip { grid-template-columns: 1fr 1fr; }
      .trust-item { padding: 17px 13px; }
      .trust-item strong { font-size: 14px; }
      .trust-item span { font-size: 12px; }
      .contact-box { padding: 45px 24px; }
      .contact-form { grid-template-columns: 1fr; }
      .field.full, .form-submit { grid-column: auto; }
      .form-submit { align-items: flex-start; flex-direction: column; }
      .footer-grid { grid-template-columns: 1fr; gap: 28px; }
      .footer-bottom { align-items: flex-start; flex-direction: column; gap: 7px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
    }

/* roulang page: category3 */
:root {
      --ink: #111815;
      --ink-2: #26302d;
      --muted: #68756f;
      --soft: #f3f7f5;
      --soft-2: #eaf2ef;
      --line: #dce6e1;
      --white: #ffffff;
      --green: #16a36a;
      --green-2: #0d7f5b;
      --cyan: #20b8bb;
      --orange: #f09a35;
      --dark: #101715;
      --dark-2: #18221f;
      --shadow: 0 18px 48px rgba(17, 24, 21, .10);
      --shadow-sm: 0 10px 28px rgba(17, 24, 21, .07);
      --radius-lg: 22px;
      --radius-md: 16px;
      --radius-sm: 12px;
      --container: 1220px;
      --ease: 180ms ease;
      --header-h: 118px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", Arial, sans-serif;
      color: var(--ink);
      background: var(--white);
      line-height: 1.75;
      letter-spacing: 0;
      overflow-x: hidden;
    }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; display: block; }
    button, input, select, textarea { font: inherit; }
    button { cursor: pointer; }
    .container {
      width: min(var(--container), calc(100% - 64px));
      margin: 0 auto;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255,255,255,.92);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(220,230,225,.72);
      transition: box-shadow var(--ease), background var(--ease);
    }
    .site-header.is-scrolled {
      background: rgba(255,255,255,.98);
      box-shadow: 0 12px 34px rgba(17,24,21,.08);
    }
    .topbar {
      border-bottom: 1px solid var(--line);
      color: var(--muted);
      font-size: 13px;
    }
    .topbar-inner {
      height: 42px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }
    .brand-mini {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--ink);
      font-weight: 700;
      white-space: nowrap;
    }
    .mark {
      width: 18px;
      height: 18px;
      border-radius: 6px;
      display: inline-block;
      background:
        linear-gradient(135deg, var(--green), var(--cyan));
      box-shadow: inset 0 0 0 4px rgba(255,255,255,.34), 0 8px 18px rgba(22,163,106,.22);
      flex: 0 0 auto;
    }
    .topbar-links {
      display: flex;
      align-items: center;
      gap: 18px;
      flex-wrap: wrap;
      justify-content: flex-end;
    }
    .top-cta {
      color: var(--green-2);
      font-weight: 700;
    }
    .nav-row {
      height: 74px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 12px;
      min-width: 182px;
    }
    .logo-text {
      display: flex;
      flex-direction: column;
      line-height: 1.15;
    }
    .logo-text strong { font-size: 20px; letter-spacing: 0; }
    .logo-text span { color: var(--muted); font-size: 12px; margin-top: 4px; }
    .primary-nav {
      display: flex;
      align-items: center;
      gap: 4px;
      flex: 1;
      justify-content: center;
    }
    .primary-nav a {
      position: relative;
      padding: 13px 12px;
      border-radius: 999px;
      color: var(--ink-2);
      font-size: 15px;
      font-weight: 600;
      transition: background var(--ease), color var(--ease);
      white-space: nowrap;
    }
    .primary-nav a:hover,
    .primary-nav a:focus {
      background: var(--soft);
      color: var(--green-2);
      outline: none;
    }
    .primary-nav a.active {
      color: var(--green-2);
      background: #edf8f3;
    }
    .primary-nav a.active::before {
      content: "";
      width: 6px;
      height: 6px;
      background: var(--green);
      border-radius: 50%;
      position: absolute;
      left: 7px;
      top: 50%;
      transform: translateY(-50%);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 12px;
      border: 1px solid var(--line);
      background: var(--white);
      color: var(--ink);
    }
    .menu-toggle span {
      display: block;
      width: 18px;
      height: 2px;
      background: currentColor;
      margin: 5px auto;
      border-radius: 2px;
      transition: transform var(--ease), opacity var(--ease);
    }
    .menu-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .menu-toggle.is-open span:nth-child(2) { opacity: 0; }
    .menu-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 12px 18px;
      border-radius: 999px;
      border: 1px solid transparent;
      font-weight: 700;
      color: var(--ink);
      background: var(--white);
      transition: transform var(--ease), box-shadow var(--ease), background var(--ease), border-color var(--ease), color var(--ease);
    }
    .btn:hover { transform: translateY(-2px); }
    .btn:focus-visible,
    .faq-question:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible,
    button:focus-visible,
    a:focus-visible {
      outline: 3px solid rgba(32,184,187,.32);
      outline-offset: 3px;
    }
    .btn-primary {
      background: var(--green);
      color: var(--white);
      box-shadow: 0 14px 30px rgba(22,163,106,.24);
    }
    .btn-primary:hover { background: var(--green-2); box-shadow: 0 18px 42px rgba(22,163,106,.30); }
    .btn-primary:active { transform: translateY(0); }
    .btn-ghost {
      border-color: var(--line);
      background: var(--white);
      color: var(--green-2);
    }
    .btn-light {
      background: var(--white);
      color: var(--ink);
      border-color: rgba(255,255,255,.25);
    }
    main { overflow: hidden; }
    section { padding: 92px 0; }
    .section-soft { background: var(--soft); }
    .section-dark {
      background: var(--dark);
      color: var(--white);
      position: relative;
      overflow: hidden;
    }
    .section-dark::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(32,184,187,.08) 1px, transparent 1px),
        linear-gradient(0deg, rgba(32,184,187,.07) 1px, transparent 1px);
      background-size: 42px 42px;
      opacity: .42;
      pointer-events: none;
    }
    .section-dark .container { position: relative; z-index: 1; }
    .section-head {
      max-width: 780px;
      margin-bottom: 34px;
    }
    .section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--green-2);
      font-weight: 800;
      font-size: 14px;
      margin-bottom: 14px;
    }
    .eyebrow::before {
      content: "";
      width: 24px;
      height: 2px;
      border-radius: 999px;
      background: var(--green);
    }
    h1, h2, h3, p { margin-top: 0; }
    h1 {
      font-size: 54px;
      line-height: 1.16;
      margin-bottom: 18px;
      letter-spacing: 0;
    }
    h2 {
      font-size: 38px;
      line-height: 1.22;
      margin-bottom: 14px;
      letter-spacing: 0;
    }
    h3 {
      font-size: 21px;
      line-height: 1.32;
      margin-bottom: 10px;
      letter-spacing: 0;
    }
    p { color: var(--muted); margin-bottom: 0; }
    .section-dark p { color: rgba(255,255,255,.72); }
    .badge, .pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      border-radius: 999px;
      border: 1px solid var(--line);
      background: var(--white);
      color: var(--ink-2);
      font-weight: 700;
      font-size: 13px;
      padding: 7px 11px;
      white-space: nowrap;
    }
    .badge.green {
      border-color: rgba(22,163,106,.22);
      background: #edf8f3;
      color: var(--green-2);
    }
    .card {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease), background var(--ease);
    }
    .card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow);
      border-color: rgba(22,163,106,.32);
    }
    .category-hero {
      padding: 70px 0 58px;
      background:
        linear-gradient(135deg, rgba(243,247,245,.98), rgba(255,255,255,.92)),
        url("/assets/images/4c7f0412bbbb1647.webp") center/cover no-repeat;
      border-bottom: 1px solid var(--line);
    }
    .category-hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.12fr) minmax(320px, .88fr);
      gap: 42px;
      align-items: center;
    }
    .hero-copy p {
      max-width: 760px;
      font-size: 18px;
    }
    .hero-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-wrap: wrap;
      margin-top: 28px;
    }
    .commute-panel {
      padding: 22px;
      border-radius: 24px;
      background: rgba(255,255,255,.88);
      border: 1px solid rgba(220,230,225,.86);
      box-shadow: var(--shadow);
      backdrop-filter: blur(8px);
    }
    .panel-top {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      gap: 18px;
      margin-bottom: 18px;
    }
    .panel-title strong {
      display: block;
      color: var(--ink);
      font-size: 22px;
      line-height: 1.25;
    }
    .panel-title span {
      color: var(--muted);
      font-size: 13px;
    }
    .route-card {
      border-radius: 18px;
      background: var(--dark);
      color: var(--white);
      padding: 20px;
      overflow: hidden;
      position: relative;
    }
    .route-card::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(22,163,106,.18), rgba(32,184,187,.08));
      pointer-events: none;
    }
    .route-card > * { position: relative; z-index: 1; }
    .route-line {
      display: grid;
      grid-template-columns: 22px 1fr auto;
      gap: 12px;
      align-items: center;
      padding: 10px 0;
      border-bottom: 1px solid rgba(255,255,255,.12);
    }
    .route-line:last-child { border-bottom: 0; }
    .dot {
      width: 14px;
      height: 14px;
      border-radius: 50%;
      background: var(--green);
      box-shadow: 0 0 0 6px rgba(22,163,106,.15);
      margin-left: 4px;
    }
    .route-line span { color: rgba(255,255,255,.70); font-size: 13px; }
    .route-line strong { font-size: 15px; }
    .panel-stats {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      margin-top: 14px;
    }
    .panel-stat {
      padding: 14px 12px;
      border-radius: 16px;
      background: var(--soft);
      border: 1px solid var(--line);
    }
    .panel-stat b {
      display: block;
      font-size: 22px;
      line-height: 1;
      color: var(--green-2);
      margin-bottom: 6px;
    }
    .panel-stat span {
      color: var(--muted);
      font-size: 12px;
    }
    .filter-strip {
      padding: 28px 0;
      border-bottom: 1px solid var(--line);
      background: var(--white);
    }
    .filter-row {
      display: flex;
      gap: 10px;
      overflow-x: auto;
      padding-bottom: 4px;
      scrollbar-width: thin;
    }
    .filter-row .pill {
      background: var(--soft);
      flex: 0 0 auto;
    }
    .content-layout {
      display: grid;
      grid-template-columns: 280px minmax(0, 1fr);
      gap: 28px;
      align-items: start;
    }
    .side-filter {
      position: sticky;
      top: 142px;
      padding: 22px;
    }
    .side-filter h2 {
      font-size: 24px;
      margin-bottom: 12px;
    }
    .side-filter ul {
      list-style: none;
      padding: 0;
      margin: 18px 0 0;
      display: grid;
      gap: 10px;
    }
    .side-filter li {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      padding: 11px 12px;
      border: 1px solid var(--line);
      border-radius: 14px;
      color: var(--ink-2);
      background: var(--soft);
      font-size: 14px;
    }
    .solution-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 18px;
    }
    .solution-card {
      padding: 24px;
      min-height: 228px;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .solution-card.featured {
      grid-column: span 2;
      display: grid;
      grid-template-columns: 1fr 310px;
      gap: 26px;
      align-items: center;
      background: linear-gradient(135deg, #ffffff, #f1faf6);
    }
    .solution-card img {
      width: 100%;
      aspect-ratio: 4 / 3;
      object-fit: cover;
      border-radius: 18px;
      border: 1px solid var(--line);
    }
    .tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: auto;
    }
    .text-link {
      color: var(--green-2);
      font-weight: 800;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      margin-top: 4px;
    }
    .text-link:hover { color: var(--green); }
    .list-more {
      margin-top: 24px;
      display: flex;
      justify-content: flex-end;
    }
    .scene-band {
      display: grid;
      grid-template-columns: .86fr 1.14fr;
      gap: 36px;
      align-items: start;
    }
    .scene-image {
      border-radius: 24px;
      overflow: hidden;
      border: 1px solid rgba(255,255,255,.16);
      box-shadow: 0 28px 70px rgba(0,0,0,.24);
      min-height: 420px;
      background: var(--dark-2);
    }
    .scene-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      min-height: 420px;
      opacity: .9;
    }
    .scene-list {
      display: grid;
      gap: 14px;
    }
    .scene-item {
      display: grid;
      grid-template-columns: 52px 1fr;
      gap: 16px;
      padding: 20px;
      border: 1px solid rgba(255,255,255,.14);
      border-radius: 20px;
      background: rgba(255,255,255,.06);
      backdrop-filter: blur(4px);
    }
    .scene-icon {
      width: 52px;
      height: 52px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      color: var(--white);
      background: linear-gradient(135deg, var(--green), var(--cyan));
      font-weight: 900;
    }
    .compare-wrap {
      border: 1px solid var(--line);
      border-radius: 24px;
      overflow: hidden;
      background: var(--white);
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
    }
    .compare-table th,
    .compare-table td {
      padding: 18px 20px;
      text-align: left;
      border-bottom: 1px solid var(--line);
      vertical-align: top;
    }
    .compare-table th {
      background: var(--soft);
      color: var(--ink);
      font-size: 15px;
    }
    .compare-table tr:last-child td { border-bottom: 0; }
    .compare-table td:first-child {
      color: var(--ink);
      font-weight: 800;
      width: 220px;
    }
    .compare-table td {
      color: var(--muted);
    }
    .entry-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
    }
    .entry-card {
      padding: 20px;
      border-radius: 18px;
      background: var(--white);
      border: 1px solid var(--line);
      transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
    }
    .entry-card:hover {
      transform: translateY(-3px);
      border-color: rgba(22,163,106,.32);
      box-shadow: var(--shadow-sm);
    }
    .entry-card span {
      display: inline-flex;
      width: 34px;
      height: 34px;
      border-radius: 12px;
      align-items: center;
      justify-content: center;
      background: #edf8f3;
      color: var(--green-2);
      font-weight: 900;
      margin-bottom: 12px;
    }
    .faq-cta-grid {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 360px;
      gap: 28px;
      align-items: start;
    }
    .faq-list {
      display: grid;
      gap: 12px;
    }
    .faq-item {
      border: 1px solid var(--line);
      border-radius: 18px;
      background: var(--white);
      overflow: hidden;
    }
    .faq-question {
      width: 100%;
      min-height: 58px;
      border: 0;
      background: transparent;
      color: var(--ink);
      padding: 18px 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 18px;
      text-align: left;
      font-weight: 800;
    }
    .faq-question .arrow {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: var(--soft);
      color: var(--green-2);
      transition: transform var(--ease), background var(--ease);
      flex: 0 0 auto;
    }
    .faq-item.is-open .arrow {
      transform: rotate(45deg);
      background: #edf8f3;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 220ms ease;
    }
    .faq-answer p {
      padding: 0 20px 20px;
    }
    .mini-cta {
      padding: 26px;
      border-radius: 24px;
      background: var(--dark);
      color: var(--white);
      position: sticky;
      top: 142px;
      overflow: hidden;
    }
    .mini-cta::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(22,163,106,.22), rgba(32,184,187,.08));
      pointer-events: none;
    }
    .mini-cta > * { position: relative; z-index: 1; }
    .mini-cta p { color: rgba(255,255,255,.72); margin-bottom: 20px; }
    .contact-line {
      display: grid;
      gap: 10px;
      margin: 20px 0;
      color: rgba(255,255,255,.82);
      font-weight: 700;
      font-size: 14px;
    }
    .site-footer {
      background: var(--dark);
      color: var(--white);
      padding: 62px 0 24px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.45fr repeat(3, 1fr);
      gap: 34px;
    }
    .footer-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 14px;
    }
    .footer-col p {
      color: rgba(255,255,255,.68);
      max-width: 390px;
    }
    .footer-col h3 {
      font-size: 16px;
      margin-bottom: 14px;
    }
    .footer-col a,
    .footer-col span {
      display: block;
      color: rgba(255,255,255,.68);
      margin: 8px 0;
      transition: color var(--ease);
    }
    .footer-col a:hover {
      color: var(--white);
    }
    .footer-bottom {
      margin-top: 38px;
      padding-top: 20px;
      border-top: 1px solid rgba(255,255,255,.12);
      display: flex;
      justify-content: space-between;
      gap: 20px;
      color: rgba(255,255,255,.56);
      font-size: 13px;
      flex-wrap: wrap;
    }
    .nav-mask {
      display: none;
      position: fixed;
      inset: 0;
      z-index: 90;
      background: rgba(16,23,21,.38);
      opacity: 0;
      pointer-events: none;
      transition: opacity var(--ease);
    }
    .nav-mask.is-open {
      opacity: 1;
      pointer-events: auto;
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: .01ms !important;
      }
    }
    @media (max-width: 1120px) {
      .container { width: min(var(--container), calc(100% - 48px)); }
      .topbar-inner { height: auto; padding: 10px 0; align-items: flex-start; }
      .primary-nav {
        position: fixed;
        z-index: 101;
        top: 0;
        right: 0;
        width: min(360px, 86vw);
        height: 100vh;
        background: var(--white);
        padding: 86px 22px 24px;
        display: flex;
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        gap: 8px;
        box-shadow: -20px 0 60px rgba(17,24,21,.18);
        transform: translateX(105%);
        transition: transform 220ms ease;
      }
      .primary-nav.is-open { transform: translateX(0); }
      .primary-nav a { padding: 14px 16px; }
      .menu-toggle { display: inline-block; position: relative; z-index: 102; }
      .nav-mask { display: block; }
      .category-hero-grid,
      .content-layout,
      .scene-band,
      .faq-cta-grid {
        grid-template-columns: 1fr;
      }
      .side-filter,
      .mini-cta { position: static; }
      .entry-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    }
    @media (max-width: 860px) {
      section { padding: 70px 0; }
      h1 { font-size: 40px; }
      h2 { font-size: 30px; }
      .nav-row { height: 66px; }
      .topbar { display: none; }
      .logo-text span { display: none; }
      .logo { min-width: auto; }
      .nav-actions .btn-primary { display: none; }
      .category-hero { padding: 48px 0; }
      .solution-grid,
      .solution-card.featured {
        grid-template-columns: 1fr;
      }
      .solution-card.featured { grid-column: span 1; }
      .panel-stats { grid-template-columns: 1fr; }
      .compare-wrap { overflow-x: auto; }
      .compare-table { min-width: 720px; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 560px) {
      .container { width: calc(100% - 36px); }
      h1 { font-size: 34px; }
      h2 { font-size: 27px; }
      .hero-copy p { font-size: 16px; }
      .hero-actions { align-items: stretch; }
      .hero-actions .btn { width: 100%; }
      .commute-panel { padding: 16px; }
      .panel-top { flex-direction: column; }
      .solution-card,
      .side-filter,
      .mini-cta { padding: 20px; }
      .entry-grid { grid-template-columns: 1fr; }
      .scene-item { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; }
    }

/* roulang page: category4 */
:root {
      --ink: #111815;
      --ink-2: #26302d;
      --muted: #68756f;
      --soft: #f3f7f5;
      --soft-2: #eaf2ef;
      --line: #dce6e1;
      --white: #ffffff;
      --green: #16a36a;
      --green-2: #0d7f5b;
      --cyan: #20b8bb;
      --orange: #f09a35;
      --dark: #101715;
      --dark-2: #18221f;
      --shadow: 0 18px 48px rgba(17, 24, 21, .10);
      --shadow-sm: 0 10px 28px rgba(17, 24, 21, .07);
      --radius-lg: 22px;
      --radius-md: 16px;
      --radius-sm: 12px;
      --container: 1220px;
      --ease: 180ms ease;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--white);
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", Arial, sans-serif;
      line-height: 1.75;
      letter-spacing: 0;
      overflow-x: hidden;
    }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; display: block; }
    button, input, select, textarea { font: inherit; }
    button { cursor: pointer; }
    .container {
      width: min(var(--container), calc(100% - 64px));
      margin: 0 auto;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255,255,255,.94);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(220,230,225,.72);
      transition: box-shadow var(--ease), background var(--ease);
    }
    .site-header.is-scrolled {
      background: rgba(255,255,255,.98);
      box-shadow: 0 12px 34px rgba(17,24,21,.08);
    }
    .topbar {
      border-bottom: 1px solid var(--line);
      color: var(--muted);
      font-size: 13px;
    }
    .topbar-inner {
      min-height: 42px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }
    .topbar-info, .topbar-contact {
      display: flex;
      align-items: center;
      gap: 20px;
      flex-wrap: wrap;
    }
    .topbar-info span + span,
    .topbar-contact span + span {
      position: relative;
      padding-left: 20px;
    }
    .topbar-info span + span::before,
    .topbar-contact span + span::before {
      content: "";
      position: absolute;
      left: 0;
      top: 7px;
      width: 1px;
      height: 12px;
      background: var(--line);
    }
    .top-cta { color: var(--green-2); font-weight: 700; }
    .nav-row {
      height: 74px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
    }
    .logo {
      min-width: 182px;
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .mark {
      position: relative;
      width: 34px;
      height: 34px;
      display: inline-block;
      border-radius: 10px;
      background: var(--dark);
      overflow: hidden;
    }
    .mark::before, .mark::after {
      content: "";
      position: absolute;
      border-radius: 50%;
      background: var(--green);
    }
    .mark::before { width: 12px; height: 12px; left: 7px; top: 7px; }
    .mark::after { width: 7px; height: 7px; right: 6px; bottom: 6px; background: var(--cyan); }
    .logo-text { display: flex; flex-direction: column; line-height: 1.15; }
    .logo-text strong { font-size: 20px; }
    .logo-text span { color: var(--muted); font-size: 12px; margin-top: 4px; }
    .primary-nav {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 4px;
      flex: 1;
    }
    .primary-nav a {
      position: relative;
      padding: 13px 12px;
      border-radius: 999px;
      color: var(--ink-2);
      font-size: 15px;
      font-weight: 600;
      white-space: nowrap;
      transition: background var(--ease), color var(--ease);
    }
    .primary-nav a:hover, .primary-nav a:focus {
      background: var(--soft);
      color: var(--green-2);
      outline: none;
    }
    .primary-nav a.active {
      color: var(--green-2);
      background: #edf8f3;
    }
    .primary-nav a.active::before {
      content: "";
      position: absolute;
      left: 7px;
      top: 50%;
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--green);
      transform: translateY(-50%);
    }
    .nav-actions { display: flex; align-items: center; gap: 10px; }
    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border: 1px solid var(--line);
      border-radius: 12px;
      color: var(--ink);
      background: var(--white);
    }
    .menu-toggle span {
      display: block;
      width: 18px;
      height: 2px;
      margin: 5px auto;
      border-radius: 2px;
      background: currentColor;
      transition: transform var(--ease), opacity var(--ease);
    }
    .menu-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .menu-toggle.is-open span:nth-child(2) { opacity: 0; }
    .menu-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
    .btn {
      min-height: 44px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 18px;
      border: 1px solid transparent;
      border-radius: 999px;
      color: var(--ink);
      background: var(--white);
      font-weight: 700;
      transition: transform var(--ease), box-shadow var(--ease), background var(--ease), border-color var(--ease), color var(--ease);
    }
    .btn:hover { transform: translateY(-2px); }
    .btn:active { transform: translateY(0); }
    .btn:focus-visible, .faq-question:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, a:focus-visible, button:focus-visible {
      outline: 3px solid rgba(32,184,187,.32);
      outline-offset: 3px;
    }
    .btn-primary {
      color: var(--white);
      background: var(--green);
      box-shadow: 0 14px 30px rgba(22,163,106,.24);
    }
    .btn-primary:hover { background: var(--green-2); box-shadow: 0 18px 42px rgba(22,163,106,.30); }
    .btn-ghost { color: var(--green-2); border-color: var(--line); }
    .btn-ghost:hover { background: var(--soft); border-color: #b9d8c9; }
    .btn-light { color: var(--ink); background: var(--white); }
    .btn-outline { color: var(--white); border-color: rgba(255,255,255,.55); background: rgba(255,255,255,.08); }
    .btn-outline:hover { background: rgba(255,255,255,.17); }
    main { overflow: hidden; }
    section { padding: 92px 0; }
    .section-soft { background: var(--soft); }
    .section-dark { position: relative; overflow: hidden; color: var(--white); background: var(--dark); }
    .section-dark::before {
      content: "";
      position: absolute;
      inset: 0;
      opacity: .42;
      pointer-events: none;
      background: linear-gradient(90deg, rgba(32,184,187,.08) 1px, transparent 1px), linear-gradient(0deg, rgba(32,184,187,.07) 1px, transparent 1px);
      background-size: 42px 42px;
    }
    .section-dark .container { position: relative; z-index: 1; }
    .section-head { max-width: 760px; margin-bottom: 34px; }
    .section-head.center { margin-right: auto; margin-left: auto; text-align: center; }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 14px;
      color: var(--green-2);
      font-size: 12px;
      font-weight: 800;
      letter-spacing: 1px;
    }
    .eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--green); }
    h1, h2, h3, p { margin-top: 0; }
    h1, h2, h3 { line-height: 1.22; }
    h1 { max-width: 720px; margin-bottom: 18px; font-size: clamp(38px, 5vw, 62px); letter-spacing: 0; }
    h2 { margin-bottom: 14px; font-size: clamp(28px, 3.5vw, 42px); }
    h3 { margin-bottom: 8px; font-size: 20px; }
    .lead { color: var(--muted); font-size: 17px; line-height: 1.85; }
    .compact-head {
      padding: 72px 0 48px;
      border-bottom: 1px solid var(--line);
      background: #fbfdfc;
    }
    .compact-layout {
      display: grid;
      grid-template-columns: minmax(0, 1.08fr) minmax(360px, .92fr);
      align-items: center;
      gap: 70px;
    }
    .compact-copy .lead { max-width: 700px; }
    .head-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
    .dashboard-preview {
      min-height: 292px;
      position: relative;
      padding: 18px;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: var(--white);
      box-shadow: var(--shadow);
    }
    .dashboard-preview img {
      width: 100%;
      height: 252px;
      object-fit: cover;
      border-radius: 13px;
      filter: saturate(.82);
    }
    .preview-status {
      position: absolute;
      right: 30px;
      bottom: 30px;
      display: flex;
      align-items: center;
      gap: 9px;
      padding: 10px 13px;
      color: var(--ink);
      border: 1px solid var(--line);
      border-radius: 10px;
      background: rgba(255,255,255,.96);
      box-shadow: var(--shadow-sm);
      font-size: 13px;
      font-weight: 700;
    }
    .status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px #ddf5e9; }
    .filter-strip {
      padding: 22px 0;
      border-bottom: 1px solid var(--line);
      background: var(--white);
    }
    .filter-inner { display: flex; align-items: center; gap: 20px; }
    .filter-label { flex: 0 0 auto; color: var(--muted); font-size: 13px; font-weight: 700; }
    .filter-list {
      display: flex;
      gap: 10px;
      overflow-x: auto;
      padding: 2px 2px 6px;
      scrollbar-width: thin;
    }
    .filter-list::-webkit-scrollbar { height: 4px; }
    .filter-list::-webkit-scrollbar-thumb { background: var(--line); border-radius: 4px; }
    .filter-item {
      flex: 0 0 auto;
      padding: 8px 14px;
      color: var(--ink-2);
      border: 1px solid var(--line);
      border-radius: 999px;
      background: var(--white);
      font-size: 14px;
      transition: color var(--ease), background var(--ease), border-color var(--ease);
    }
    .filter-item:hover, .filter-item.is-current { color: var(--green-2); border-color: #a9d8c0; background: #edf8f3; }
    .list-section { padding-top: 82px; }
    .insight-layout {
      display: grid;
      grid-template-columns: 280px minmax(0, 1fr);
      gap: 42px;
      align-items: start;
    }
    .side-note {
      position: sticky;
      top: 150px;
      padding: 24px;
      border-left: 3px solid var(--green);
      background: var(--soft);
    }
    .side-note strong { display: block; margin-bottom: 8px; font-size: 18px; }
    .side-note p { margin-bottom: 0; color: var(--muted); font-size: 14px; }
    .insight-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 16px;
    }
    .insight-card {
      min-height: 218px;
      display: flex;
      flex-direction: column;
      padding: 25px;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      background: var(--white);
      box-shadow: 0 4px 16px rgba(17,24,21,.025);
      transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
    }
    .insight-card:hover { transform: translateY(-3px); border-color: #a8d7bf; box-shadow: var(--shadow-sm); }
    .card-top { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 20px; }
    .card-index { color: var(--green); font-size: 13px; font-weight: 800; }
    .card-tag, .scene-tag {
      display: inline-flex;
      align-items: center;
      width: fit-content;
      padding: 4px 9px;
      color: var(--green-2);
      border-radius: 6px;
      background: var(--soft-2);
      font-size: 12px;
      font-weight: 700;
    }
    .insight-card p { margin-bottom: 18px; color: var(--muted); font-size: 14px; }
    .text-link {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      margin-top: auto;
      color: var(--green-2);
      font-size: 14px;
      font-weight: 800;
    }
    .text-link::after { content: "→"; transition: transform var(--ease); }
    .text-link:hover::after { transform: translateX(4px); }
    .scene-section { background: var(--soft); }
    .scene-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 1px;
      border: 1px solid var(--line);
      background: var(--line);
    }
    .scene-item {
      min-height: 180px;
      padding: 26px;
      background: var(--soft);
      transition: background var(--ease);
    }
    .scene-item:hover { background: var(--white); }
    .scene-icon {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      margin-bottom: 18px;
      color: var(--green-2);
      border: 1px solid #b9dccb;
      border-radius: 12px;
      background: #e5f5ed;
      font-weight: 800;
    }
    .scene-item p { margin-bottom: 0; color: var(--muted); font-size: 14px; }
    .compare-section { padding-top: 88px; }
    .compare-layout {
      display: grid;
      grid-template-columns: .72fr 1.28fr;
      gap: 60px;
      align-items: start;
    }
    .compare-intro p { color: var(--muted); }
    .compare-note {
      margin-top: 26px;
      padding: 17px 18px;
      border-radius: 12px;
      background: var(--soft);
      color: var(--muted);
      font-size: 13px;
    }
    .compare-table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-md); }
    .compare-table { width: 100%; min-width: 610px; border-collapse: collapse; background: var(--white); font-size: 14px; }
    .compare-table th, .compare-table td { padding: 17px 18px; text-align: left; border-bottom: 1px solid var(--line); }
    .compare-table th { color: var(--muted); background: var(--soft); font-size: 13px; font-weight: 800; }
    .compare-table tr:last-child td { border-bottom: 0; }
    .compare-table td:not(:first-child) { color: var(--ink-2); }
    .check { color: var(--green-2); font-weight: 800; }
    .topic-section { padding: 78px 0; background: var(--dark); color: var(--white); }
    .topic-section .eyebrow { color: #79d6b0; }
    .topic-section .eyebrow::before { background: #79d6b0; }
    .topic-section .section-head p { color: rgba(255,255,255,.72); }
    .topic-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 14px;
    }
    .topic-card {
      padding: 22px;
      border: 1px solid rgba(255,255,255,.13);
      border-radius: var(--radius-md);
      background: rgba(255,255,255,.06);
      transition: transform var(--ease), border-color var(--ease), background var(--ease);
    }
    .topic-card:hover {
      transform: translateY(-3px);
      border-color: rgba(121,214,176,.54);
      background: rgba(255,255,255,.10);
    }
    .topic-card span {
      display: inline-flex;
      margin-bottom: 16px;
      color: #79d6b0;
      font-size: 13px;
      font-weight: 800;
    }
    .topic-card h3 { font-size: 18px; }
    .topic-card p { margin-bottom: 16px; color: rgba(255,255,255,.72); font-size: 14px; }
    .topic-card a {
      color: #ffffff;
      font-weight: 800;
      font-size: 14px;
    }
    .faq-cta {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 360px;
      gap: 42px;
      align-items: start;
    }
    .faq-list { display: grid; gap: 12px; }
    .faq-item {
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      background: var(--white);
      overflow: hidden;
    }
    .faq-question {
      width: 100%;
      min-height: 58px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      padding: 17px 20px;
      border: 0;
      color: var(--ink);
      background: var(--white);
      text-align: left;
      font-weight: 800;
    }
    .faq-question::after {
      content: "+";
      flex: 0 0 auto;
      width: 28px;
      height: 28px;
      display: grid;
      place-items: center;
      color: var(--green-2);
      border-radius: 50%;
      background: var(--soft);
      transition: transform var(--ease), background var(--ease);
    }
    .faq-item.is-open .faq-question::after {
      content: "−";
      background: #dff4ea;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 220ms ease;
    }
    .faq-answer p {
      margin: 0;
      padding: 0 20px 20px;
      color: var(--muted);
      font-size: 14px;
    }
    .mini-contact {
      padding: 28px;
      border-radius: var(--radius-lg);
      background:
        linear-gradient(rgba(16,23,21,.78), rgba(16,23,21,.78)),
        url('/assets/images/4dbaa1e505f5c096.webp') center/cover;
      color: var(--white);
      box-shadow: var(--shadow);
    }
    .mini-contact h2 { font-size: 28px; }
    .mini-contact p { color: rgba(255,255,255,.74); }
    .contact-points {
      display: grid;
      gap: 10px;
      margin: 24px 0;
      padding: 0;
      list-style: none;
    }
    .contact-points li {
      position: relative;
      padding-left: 24px;
      color: rgba(255,255,255,.82);
      font-size: 14px;
    }
    .contact-points li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 10px;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--green);
    }
    .site-footer {
      padding: 68px 0 28px;
      color: rgba(255,255,255,.76);
      background: var(--dark);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.35fr .75fr .75fr .95fr;
      gap: 38px;
    }
    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
      color: var(--white);
      font-size: 19px;
      font-weight: 800;
    }
    .footer-col p {
      max-width: 380px;
      margin-bottom: 0;
      color: rgba(255,255,255,.65);
      font-size: 14px;
    }
    .footer-col h3 {
      margin-bottom: 14px;
      color: var(--white);
      font-size: 15px;
    }
    .footer-col a, .footer-col span {
      display: block;
      margin: 8px 0;
      color: rgba(255,255,255,.70);
      font-size: 14px;
      transition: color var(--ease);
    }
    .footer-col a:hover { color: #79d6b0; }
    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      margin-top: 42px;
      padding-top: 22px;
      border-top: 1px solid rgba(255,255,255,.12);
      color: rgba(255,255,255,.55);
      font-size: 13px;
    }
    .nav-mask {
      display: none;
      position: fixed;
      inset: 0;
      z-index: 90;
      background: rgba(16,23,21,.42);
    }
    .nav-mask.is-show { display: block; }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after {
        scroll-behavior: auto !important;
        transition: none !important;
        animation: none !important;
      }
    }
    @media (max-width: 1100px) {
      .topbar { display: none; }
      .nav-row { height: 70px; }
      .primary-nav {
        position: fixed;
        top: 70px;
        right: 18px;
        left: 18px;
        z-index: 110;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 16px;
        border: 1px solid var(--line);
        border-radius: 18px;
        background: var(--white);
        box-shadow: var(--shadow);
      }
      .primary-nav.is-open { display: flex; }
      .primary-nav a { padding: 13px 15px; }
      .menu-toggle { display: inline-block; }
      .compact-layout, .insight-layout, .compare-layout, .faq-cta {
        grid-template-columns: 1fr;
        gap: 34px;
      }
      .side-note { position: static; }
      .scene-grid, .topic-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    }
    @media (max-width: 760px) {
      .container { width: min(100% - 36px, var(--container)); }
      section { padding: 66px 0; }
      .nav-actions .btn { display: none; }
      .logo { min-width: 0; }
      .logo-text strong { font-size: 18px; }
      .logo-text span { display: none; }
      .compact-head { padding: 48px 0 34px; }
      h1 { font-size: 38px; }
      h2 { font-size: 29px; }
      .dashboard-preview { min-height: auto; padding: 12px; }
      .dashboard-preview img { height: 218px; }
      .preview-status { right: 20px; bottom: 20px; }
      .filter-inner { align-items: flex-start; flex-direction: column; gap: 10px; }
      .insight-grid { grid-template-columns: 1fr; }
      .scene-grid, .topic-grid { grid-template-columns: 1fr; }
      .compare-table { min-width: 560px; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; align-items: flex-start; }
    }
    @media (max-width: 520px) {
      .compact-copy .head-actions { flex-direction: column; }
      .compact-copy .btn, .mini-contact .btn { width: 100%; }
      .insight-card, .scene-item, .topic-card, .mini-contact { padding: 22px; }
      .faq-question { padding: 16px; }
      .faq-answer p { padding: 0 16px 18px; }
    }

/* roulang page: category5 */
:root {
      --ink: #111815;
      --ink-2: #26302d;
      --muted: #68756f;
      --soft: #f3f7f5;
      --soft-2: #eaf2ef;
      --line: #dce6e1;
      --white: #ffffff;
      --green: #16a36a;
      --green-2: #0d7f5b;
      --cyan: #20b8bb;
      --orange: #f09a35;
      --dark: #101715;
      --dark-2: #18221f;
      --shadow: 0 18px 48px rgba(17, 24, 21, .10);
      --shadow-sm: 0 10px 28px rgba(17, 24, 21, .07);
      --radius-lg: 22px;
      --radius-md: 16px;
      --radius-sm: 12px;
      --container: 1220px;
      --ease: 180ms ease;
      --header-h: 118px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", Arial, sans-serif;
      color: var(--ink);
      background: var(--white);
      line-height: 1.75;
      letter-spacing: 0;
      overflow-x: hidden;
    }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; display: block; }
    button, input, select, textarea { font: inherit; }
    button { cursor: pointer; }
    .container {
      width: min(var(--container), calc(100% - 64px));
      margin: 0 auto;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255,255,255,.92);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(220,230,225,.72);
      transition: box-shadow var(--ease), background var(--ease);
    }
    .site-header.is-scrolled {
      background: rgba(255,255,255,.98);
      box-shadow: 0 12px 34px rgba(17,24,21,.08);
    }
    .topbar {
      border-bottom: 1px solid var(--line);
      color: var(--muted);
      font-size: 13px;
    }
    .topbar-inner {
      height: 42px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }
    .brand-mini {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--ink);
      font-weight: 700;
    }
    .mark {
      width: 28px;
      height: 28px;
      border-radius: 10px;
      display: inline-block;
      background:
        linear-gradient(135deg, var(--green), var(--cyan));
      position: relative;
      flex: 0 0 auto;
      box-shadow: 0 10px 24px rgba(22,163,106,.24);
    }
    .mark::after {
      content: "";
      position: absolute;
      inset: 8px 6px;
      border-top: 2px solid rgba(255,255,255,.9);
      border-bottom: 2px solid rgba(255,255,255,.75);
      transform: skewX(-18deg);
    }
    .topbar-meta {
      display: flex;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
      justify-content: flex-end;
    }
    .top-cta { color: var(--green-2); font-weight: 700; }
    .nav-row {
      height: 74px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 12px;
      min-width: 182px;
    }
    .logo-text {
      display: flex;
      flex-direction: column;
      line-height: 1.15;
    }
    .logo-text strong { font-size: 20px; letter-spacing: 0; }
    .logo-text span { color: var(--muted); font-size: 12px; margin-top: 4px; }
    .primary-nav {
      display: flex;
      align-items: center;
      gap: 4px;
      flex: 1;
      justify-content: center;
    }
    .primary-nav a {
      position: relative;
      padding: 13px 12px;
      border-radius: 999px;
      color: var(--ink-2);
      font-size: 15px;
      font-weight: 600;
      transition: background var(--ease), color var(--ease);
      white-space: nowrap;
    }
    .primary-nav a:hover,
    .primary-nav a:focus {
      background: var(--soft);
      color: var(--green-2);
      outline: none;
    }
    .primary-nav a.active {
      color: var(--green-2);
      background: #edf8f3;
    }
    .primary-nav a.active::before {
      content: "";
      width: 6px;
      height: 6px;
      background: var(--green);
      border-radius: 50%;
      position: absolute;
      left: 7px;
      top: 50%;
      transform: translateY(-50%);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 12px;
      border: 1px solid var(--line);
      background: var(--white);
      color: var(--ink);
    }
    .menu-toggle span {
      display: block;
      width: 18px;
      height: 2px;
      background: currentColor;
      margin: 5px auto;
      border-radius: 2px;
      transition: transform var(--ease), opacity var(--ease);
    }
    .menu-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .menu-toggle.is-open span:nth-child(2) { opacity: 0; }
    .menu-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 12px 18px;
      border-radius: 999px;
      border: 1px solid transparent;
      font-weight: 700;
      color: var(--ink);
      background: var(--white);
      transition: transform var(--ease), box-shadow var(--ease), background var(--ease), border-color var(--ease), color var(--ease);
    }
    .btn:hover { transform: translateY(-2px); }
    .btn:focus-visible,
    .faq-question:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible,
    button:focus-visible,
    a:focus-visible {
      outline: 3px solid rgba(32,184,187,.32);
      outline-offset: 3px;
    }
    .btn-primary {
      background: var(--green);
      color: var(--white);
      box-shadow: 0 14px 30px rgba(22,163,106,.24);
    }
    .btn-primary:hover { background: var(--green-2); box-shadow: 0 18px 42px rgba(22,163,106,.30); }
    .btn-primary:active { transform: translateY(0); }
    .btn-ghost {
      border-color: var(--line);
      background: var(--white);
      color: var(--green-2);
    }
    .btn-light {
      background: var(--white);
      color: var(--ink);
      border-color: rgba(255,255,255,.25);
    }
    main { overflow: hidden; }
    section { padding: 86px 0; }
    .section-soft { background: var(--soft); }
    .section-dark {
      background: var(--dark);
      color: var(--white);
      position: relative;
      overflow: hidden;
    }
    .section-dark::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(32,184,187,.08) 1px, transparent 1px),
        linear-gradient(0deg, rgba(32,184,187,.07) 1px, transparent 1px);
      background-size: 42px 42px;
      opacity: .42;
      pointer-events: none;
    }
    .section-dark .container { position: relative; z-index: 1; }
    .section-head {
      max-width: 780px;
      margin-bottom: 34px;
    }
    .section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin: 0 0 14px;
      color: var(--green-2);
      font-weight: 800;
      font-size: 14px;
    }
    .eyebrow::before {
      content: "";
      width: 26px;
      height: 2px;
      background: var(--green);
      border-radius: 99px;
    }
    h1, h2, h3, p { margin-top: 0; }
    h1 {
      font-size: 54px;
      line-height: 1.16;
      margin-bottom: 18px;
      font-weight: 800;
      letter-spacing: 0;
    }
    h2 {
      font-size: 38px;
      line-height: 1.22;
      margin-bottom: 14px;
      font-weight: 800;
      letter-spacing: 0;
    }
    h3 {
      font-size: 21px;
      line-height: 1.32;
      margin-bottom: 10px;
      font-weight: 760;
      letter-spacing: 0;
    }
    p { color: var(--muted); margin-bottom: 0; }
    .section-dark p { color: rgba(255,255,255,.72); }
    .badge, .pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      border-radius: 999px;
      border: 1px solid var(--line);
      background: var(--white);
      color: var(--ink-2);
      font-size: 13px;
      font-weight: 700;
      padding: 7px 11px;
      white-space: nowrap;
    }
    .badge.green {
      color: var(--green-2);
      background: #edf8f3;
      border-color: #cfebe0;
    }
    .page-hero {
      padding: 54px 0 44px;
      background:
        linear-gradient(90deg, rgba(243,247,245,.96), rgba(243,247,245,.82)),
        url("/assets/images/f1afa296a82f6559.webp") center/cover no-repeat;
      border-bottom: 1px solid var(--line);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.15fr) minmax(360px, .85fr);
      gap: 38px;
      align-items: center;
    }
    .hero-copy p {
      font-size: 18px;
      max-width: 760px;
    }
    .hero-actions {
      margin-top: 26px;
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
    }
    .order-panel {
      background: rgba(255,255,255,.88);
      border: 1px solid rgba(220,230,225,.9);
      border-radius: var(--radius-lg);
      padding: 18px;
      box-shadow: var(--shadow-sm);
    }
    .panel-top {
      display: flex;
      justify-content: space-between;
      gap: 14px;
      align-items: center;
      margin-bottom: 16px;
    }
    .status-list {
      display: grid;
      gap: 10px;
    }
    .status-item {
      display: grid;
      grid-template-columns: 92px 1fr auto;
      gap: 12px;
      align-items: center;
      padding: 13px;
      border-radius: 14px;
      background: var(--soft);
      border: 1px solid var(--line);
    }
    .status-time {
      color: var(--ink);
      font-weight: 800;
      font-size: 14px;
    }
    .status-title {
      color: var(--ink-2);
      font-weight: 750;
      line-height: 1.35;
    }
    .status-label {
      color: var(--green-2);
      font-weight: 800;
      font-size: 12px;
      background: #e7f8f1;
      padding: 5px 8px;
      border-radius: 999px;
    }
    .filter-wrap {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
      padding: 16px;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
    }
    .content-layout {
      display: grid;
      grid-template-columns: 280px 1fr;
      gap: 28px;
      align-items: start;
    }
    .side-panel {
      position: sticky;
      top: 144px;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 20px;
      background: var(--white);
      box-shadow: var(--shadow-sm);
    }
    .side-panel h3 { font-size: 18px; }
    .side-list {
      display: grid;
      gap: 10px;
      margin-top: 16px;
    }
    .side-list span {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 11px 12px;
      border-radius: 12px;
      background: var(--soft);
      color: var(--ink-2);
      font-weight: 700;
      font-size: 14px;
    }
    .solution-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 18px;
    }
    .solution-card {
      border: 1px solid var(--line);
      background: var(--white);
      border-radius: var(--radius-lg);
      padding: 22px;
      min-height: 238px;
      box-shadow: var(--shadow-sm);
      transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
    }
    .solution-card:hover {
      transform: translateY(-3px);
      border-color: rgba(22,163,106,.38);
      box-shadow: var(--shadow);
    }
    .card-icon {
      width: 44px;
      height: 44px;
      border-radius: 14px;
      background: linear-gradient(135deg, #e6f8f1, #e7f4f5);
      color: var(--green-2);
      display: grid;
      place-items: center;
      font-weight: 900;
      margin-bottom: 16px;
    }
    .tag-row {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
      margin-top: 16px;
    }
    .mini-tag {
      font-size: 12px;
      color: var(--muted);
      background: var(--soft);
      border: 1px solid var(--line);
      border-radius: 999px;
      padding: 5px 8px;
      font-weight: 700;
    }
    .text-link {
      display: inline-flex;
      margin-top: 18px;
      color: var(--green-2);
      font-weight: 800;
      border-bottom: 1px solid rgba(13,127,91,.35);
    }
    .more-line {
      margin-top: 24px;
      padding-top: 20px;
      border-top: 1px solid var(--line);
      display: flex;
      justify-content: flex-end;
    }
    .scenario-row {
      display: grid;
      grid-template-columns: 1.25fr .75fr;
      gap: 28px;
      align-items: stretch;
    }
    .scenario-image {
      min-height: 430px;
      border-radius: var(--radius-lg);
      overflow: hidden;
      position: relative;
      background: var(--dark);
      box-shadow: var(--shadow);
    }
    .scenario-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: .88;
    }
    .scenario-image .image-caption {
      position: absolute;
      left: 22px;
      right: 22px;
      bottom: 22px;
      padding: 18px;
      border-radius: 18px;
      background: rgba(16,23,21,.72);
      color: var(--white);
      backdrop-filter: blur(10px);
    }
    .scenario-image p { color: rgba(255,255,255,.72); }
    .scenario-list {
      display: grid;
      gap: 14px;
    }
    .scenario-card {
      padding: 20px;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      background: var(--white);
      transition: transform var(--ease), border-color var(--ease);
    }
    .scenario-card:hover {
      transform: translateX(4px);
      border-color: rgba(22,163,106,.38);
    }
    .compare-wrap {
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: var(--white);
      box-shadow: var(--shadow-sm);
    }
    .compare-row {
      display: grid;
      grid-template-columns: 210px 1fr 1fr;
      border-bottom: 1px solid var(--line);
      min-height: 72px;
    }
    .compare-row:last-child { border-bottom: 0; }
    .compare-row > div {
      padding: 18px 20px;
      border-right: 1px solid var(--line);
      display: flex;
      align-items: center;
    }
    .compare-row > div:last-child { border-right: 0; }
    .compare-head {
      background: var(--dark);
      color: var(--white);
      font-weight: 800;
    }
    .compare-name {
      font-weight: 800;
      color: var(--ink);
      background: var(--soft);
    }
    .topic-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
    }
    .topic-card {
      padding: 20px;
      border: 1px solid rgba(255,255,255,.14);
      border-radius: var(--radius-md);
      background: rgba(255,255,255,.06);
      transition: transform var(--ease), background var(--ease), border-color var(--ease);
    }
    .topic-card:hover {
      transform: translateY(-3px);
      background: rgba(255,255,255,.10);
      border-color: rgba(32,184,187,.45);
    }
    .topic-card span {
      color: rgba(255,255,255,.62);
      font-size: 13px;
      font-weight: 800;
    }
    .topic-card h3 { color: var(--white); margin-top: 8px; }
    .topic-card p { font-size: 14px; }
    .faq-layout {
      display: grid;
      grid-template-columns: .8fr 1.2fr;
      gap: 32px;
      align-items: start;
    }
    .faq-list {
      display: grid;
      gap: 12px;
    }
    .faq-item {
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      background: var(--white);
      overflow: hidden;
    }
    .faq-question {
      width: 100%;
      min-height: 62px;
      padding: 18px 20px;
      border: 0;
      background: transparent;
      color: var(--ink);
      text-align: left;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 20px;
      font-weight: 800;
    }
    .faq-question::after {
      content: "+";
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: var(--soft);
      display: grid;
      place-items: center;
      flex: 0 0 auto;
      color: var(--green-2);
      transition: transform var(--ease);
    }
    .faq-item.is-open .faq-question::after {
      content: "−";
      transform: rotate(180deg);
    }
    .faq-answer {
      display: none;
      padding: 0 20px 20px;
    }
    .faq-item.is-open .faq-answer { display: block; }
    .contact-card {
      border-radius: var(--radius-lg);
      padding: 28px;
      background: var(--dark);
      color: var(--white);
      box-shadow: var(--shadow);
    }
    .contact-card p { color: rgba(255,255,255,.72); }
    .contact-grid {
      margin-top: 18px;
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
    }
    .field {
      display: grid;
      gap: 6px;
    }
    .field.full { grid-column: 1 / -1; }
    .field label {
      color: rgba(255,255,255,.78);
      font-size: 13px;
      font-weight: 700;
    }
    .field input,
    .field select,
    .field textarea {
      width: 100%;
      border: 1px solid rgba(255,255,255,.18);
      background: rgba(255,255,255,.08);
      color: var(--white);
      border-radius: 14px;
      min-height: 46px;
      padding: 11px 13px;
    }
    .field textarea { min-height: 92px; resize: vertical; }
    .field input::placeholder,
    .field textarea::placeholder { color: rgba(255,255,255,.44); }
    .field select option { color: var(--ink); }
    .assurance {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 12px;
      margin-bottom: 30px;
    }
    .assurance-item {
      padding: 16px;
      border-radius: var(--radius-md);
      background: #edf8f3;
      border: 1px solid #cfebe0;
      color: var(--ink-2);
      font-weight: 800;
    }
    .assurance-item span {
      display: block;
      color: var(--muted);
      font-size: 13px;
      font-weight: 600;
      margin-top: 4px;
    }
    .site-footer {
      background: var(--dark);
      color: var(--white);
      padding: 66px 0 24px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.3fr .8fr .8fr 1fr;
      gap: 34px;
      padding-bottom: 34px;
      border-bottom: 1px solid rgba(255,255,255,.12);
    }
    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 14px;
    }
    .footer-col p { color: rgba(255,255,255,.68); }
    .footer-col h3 {
      font-size: 16px;
      margin-bottom: 14px;
      color: var(--white);
    }
    .footer-col a,
    .footer-col span {
      display: block;
      color: rgba(255,255,255,.68);
      margin: 8px 0;
      transition: color var(--ease);
    }
    .footer-col a:hover { color: var(--white); }
    .footer-bottom {
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
      gap: 18px;
      color: rgba(255,255,255,.58);
      font-size: 13px;
      flex-wrap: wrap;
    }
    @media (max-width: 1100px) {
      .container { width: min(var(--container), calc(100% - 48px)); }
      .primary-nav {
        position: fixed;
        top: 117px;
        left: 24px;
        right: 24px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 16px;
        background: var(--white);
        border: 1px solid var(--line);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow);
      }
      .primary-nav.is-open { display: flex; }
      .primary-nav a { padding: 13px 16px; }
      .menu-toggle { display: block; }
      .nav-actions .btn { display: none; }
      .hero-grid,
      .content-layout,
      .scenario-row,
      .faq-layout {
        grid-template-columns: 1fr;
      }
      .side-panel { position: static; }
      .topic-grid,
      .assurance,
      .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    }
    @media (max-width: 768px) {
      .container { width: min(100% - 36px, var(--container)); }
      .topbar { display: none; }
      .nav-row { height: 72px; }
      .primary-nav { top: 82px; left: 18px; right: 18px; }
      .logo { min-width: auto; }
      .logo-text strong { font-size: 18px; }
      .logo-text span { display: none; }
      section { padding: 62px 0; }
      .page-hero { padding: 42px 0 36px; }
      h1 { font-size: 38px; }
      h2 { font-size: 29px; }
      .hero-copy p { font-size: 16px; }
      .order-panel { padding: 14px; }
      .status-item { grid-template-columns: 1fr; gap: 6px; }
      .solution-grid,
      .contact-grid { grid-template-columns: 1fr; }
      .filter-wrap {
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: 18px;
      }
      .compare-wrap { overflow-x: auto; }
      .compare-row { min-width: 720px; }
      .topic-grid,
      .assurance,
      .footer-grid { grid-template-columns: 1fr; }
      .scenario-image { min-height: 320px; }
      .footer-bottom { flex-direction: column; }
    }
    @media (max-width: 520px) {
      .hero-actions,
      .more-line { justify-content: stretch; }
      .btn { width: 100%; }
      .panel-top { align-items: flex-start; flex-direction: column; }
      .solution-card { padding: 18px; }
      .contact-card { padding: 22px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after {
        transition: none !important;
        scroll-behavior: auto !important;
      }
    }