/* roulang page: index */
:root {
      --green: #0E8C7A;
      --green-deep: #0B6F63;
      --green-mid: #1BB39F;
      --green-light: #7EE0D2;
      --orange: #E07A3D;
      --orange-deep: #c8642b;
      --bg: #F3F7F5;
      --mint: #E7F4F0;
      --card: #FFFFFF;
      --line: #D7E6E1;
      --title: #12302C;
      --text: #3A4F4B;
      --muted: #6B7F7A;
      --dark: #082824;
      --dark-2: #0E3D36;
      --shadow: 0 12px 40px rgba(14, 140, 122, .10);
      --shadow-hover: 0 18px 48px rgba(14, 140, 122, .16);
      --radius: 24px;
      --radius-lg: 28px;
      --radius-btn: 14px;
      --header-offset: 108px;
      --container: 1220px;
      --grad: linear-gradient(135deg, #0B6F63 0%, #1BB39F 52%, #7EE0D2 100%);
      --grad-dark: linear-gradient(135deg, #082824 0%, #0E3D36 100%);
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    html, body { margin: 0; padding: 0; }
    body {
      font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      font-size: 16px;
      line-height: 1.8;
      font-weight: 500;
      color: var(--text);
      background: var(--bg);
      overflow-x: hidden;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--green); text-decoration: none; transition: color .2s ease, opacity .2s ease; }
    a:hover { color: var(--green-deep); }
    button, input, select, textarea { font-family: inherit; }
    button { cursor: pointer; }
    h1, h2, h3, h4 { color: var(--title); font-weight: 700; margin: 0 0 .6em; line-height: 1.25; }
    h1 { font-size: 46px; line-height: 1.2; }
    h2 { font-size: 30px; }
    h3 { font-size: 22px; }
    p { margin: 0 0 1em; }
    ul { margin: 0; padding: 0; list-style: none; }
    :focus-visible { outline: 2px solid var(--orange); outline-offset: 3px; }
    .skip {
      position: absolute; left: -999px; top: 8px; background: #fff; color: var(--title);
      padding: 8px 14px; border-radius: 10px; z-index: 80;
    }
    .skip:focus { left: 12px; }
    .container { width: min(var(--container), calc(100% - 48px)); margin: 0 auto; }
    .topbar {
      background: var(--dark); color: #e7f4f0; font-size: 13px; height: 38px;
      display: flex; align-items: center;
    }
    .topbar .container { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
    .topbar-left { display: flex; align-items: center; gap: 8px; white-space: nowrap; }
    .dot {
      width: 7px; height: 7px; border-radius: 50%; background: var(--green-light); display: inline-block;
    }
    .topbar-right { display: flex; align-items: center; gap: 18px; }
    .topbar a { color: #fff; }
    .topbar a:hover { color: var(--green-light); }
    .header {
      position: sticky; top: 0; z-index: 50; background: rgba(243, 247, 245, .92);
      backdrop-filter: blur(14px); border-bottom: 1px solid transparent; transition: box-shadow .2s ease, border-color .2s ease;
    }
    .header.is-stuck { box-shadow: 0 8px 24px rgba(8, 40, 36, .08); border-bottom-color: var(--line); }
    .nav-main {
      display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 70px;
    }
    .logo {
      display: flex; align-items: center; gap: 10px; color: var(--title); font-weight: 700; font-size: 18px; flex-shrink: 0;
    }
    .logo:hover { color: var(--green-deep); }
    .logo-mark {
      width: 36px; height: 36px; border-radius: 12px; background: var(--grad); display: grid; place-items: center;
      box-shadow: var(--shadow);
    }
    .logo-mark svg { width: 20px; height: 20px; fill: #fff; }
    .nav-links { display: flex; align-items: center; gap: 6px; }
    .nav-links a {
      position: relative; color: var(--text); padding: 10px 12px; font-size: 15px; border-radius: 10px;
    }
    .nav-links a:hover { color: var(--green-deep); background: var(--mint); }
    .nav-links a.is-active { color: var(--green-deep); font-weight: 700; }
    .nav-links a.is-active::after {
      content: ""; position: absolute; left: 12px; right: 12px; bottom: 4px; height: 3px; border-radius: 99px; background: var(--grad);
    }
    .nav-cta { display: flex; align-items: center; gap: 12px; }
    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 48px; padding: 0 20px; border-radius: var(--radius-btn); border: 1px solid transparent;
      font-weight: 700; font-size: 15px; transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
    }
    .btn:hover { transform: translateY(-2px); }
    .btn:active { transform: translateY(0); }
    .btn-primary {
      color: #fff; background: var(--grad); box-shadow: var(--shadow);
    }
    .btn-primary:hover { box-shadow: inset 0 0 0 1px rgba(255,255,255,.15), var(--shadow-hover); }
    .btn-ghost {
      background: #fff; color: var(--green-deep); border-color: var(--green);
    }
    .btn-ghost:hover { background: var(--mint); }
    .btn-line {
      background: transparent; color: #fff; border-color: rgba(255,255,255,.55);
    }
    .btn-line:hover { background: rgba(255,255,255,.08); color: #fff; }
    .menu-toggle {
      display: none; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 12px; background: #fff;
      align-items: center; justify-content: center; flex-direction: column; gap: 5px;
    }
    .menu-toggle span { width: 18px; height: 2px; background: var(--title); border-radius: 2px; }
    .drawer {
      display: none; position: fixed; inset: 0; background: rgba(8, 40, 36, .46); z-index: 60;
    }
    .drawer.is-open { display: block; }
    .drawer-panel {
      position: absolute; right: 0; top: 0; bottom: 0; width: min(86vw, 360px);
      background: #fff; padding: 24px 20px; display: flex; flex-direction: column; gap: 8px;
      box-shadow: -16px 0 40px rgba(8,40,36,.18);
    }
    .drawer-panel a {
      min-height: 44px; display: flex; align-items: center; padding: 8px 10px; border-radius: 12px; color: var(--title);
    }
    .drawer-panel a:hover, .drawer-panel a:focus { background: var(--mint); }
    .hero {
      position: relative; min-height: 720px; overflow: hidden; color: #fff;
    }
    .hero-slides { position: absolute; inset: 0; }
    .hero-slide {
      position: absolute; inset: 0; background-size: cover; background-position: center;
      opacity: 0; transform: scale(1.04); transition: opacity .7s ease, transform 1.2s ease;
    }
    .hero-slide.is-active { opacity: 1; transform: scale(1); }
    .hero-slide::after {
      content: ""; position: absolute; inset: 0;
      background: linear-gradient(90deg, rgba(8,40,36,.78) 0%, rgba(11,111,99,.45) 48%, rgba(8,40,36,.28) 100%);
    }
    .hero-fore { position: relative; z-index: 2; padding: 72px 0 88px; display: grid; grid-template-columns: 1.08fr .92fr; gap: 36px; align-items: center; }
    .brand-chip {
      display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,.12);
      border: 1px solid rgba(255,255,255,.22); color: #fff; border-radius: 999px; padding: 6px 12px; font-size: 13px; margin-bottom: 16px;
    }
    .hero h1 { color: #fff; margin-bottom: 16px; }
    .hero-lead { font-size: 16px; line-height: 1.85; color: #e7f4f0; max-width: 640px; margin-bottom: 22px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 18px; }
    .compare-card {
      background: rgba(255,255,255,.96); color: var(--text); border-radius: 28px; padding: 22px;
      box-shadow: var(--shadow-hover);
    }
    .compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .compare-col { border-radius: 20px; padding: 16px; min-height: 168px; }
    .compare-col.before { background: #f6eee8; }
    .compare-col.after { background: var(--mint); }
    .compare-col h3 { font-size: 16px; margin-bottom: 8px; }
    .compare-col p { font-size: 14px; line-height: 1.7; margin: 0; color: var(--text); }
    .badge-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
    .badge {
      display: inline-flex; align-items: center; gap: 6px; border-radius: 999px; padding: 6px 12px;
      font-size: 12px; font-weight: 700; color: #fff; background: var(--grad);
    }
    .badge.orange { background: linear-gradient(135deg, #E07A3D, #f0a36d); }
    .badge.dark { background: var(--grad-dark); }
    .hero-controls {
      display: flex; align-items: center; gap: 10px; margin-top: 8px;
    }
    .hero-navbtn, .hero-pause {
      width: 44px; height: 44px; border-radius: 12px; border: 1px solid rgba(255,255,255,.35);
      background: rgba(8,40,36,.35); color: #fff;
    }
    .hero-dots { display: flex; gap: 8px; }
    .hero-dots button {
      width: 28px; height: 8px; border: 0; border-radius: 99px; background: rgba(255,255,255,.35);
    }
    .hero-dots button.is-active { background: #fff; width: 36px; }
    main section { padding: 100px 0; }
    .sec-head { margin-bottom: 32px; max-width: 760px; }
    .sec-head p { color: var(--text); }
    .mint-sec { background: var(--mint); }
    .white-sec { background: #fff; }
    .intro-grid { display: grid; grid-template-columns: .92fr 1.08fr; gap: 32px; align-items: center; }
    .media-card {
      border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); background: #fff;
    }
    .media-card img { width: 100%; height: 420px; object-fit: cover; }
    .proof-list { display: grid; gap: 10px; margin: 18px 0 0; }
    .proof-list li {
      background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 12px 14px; font-size: 14px;
    }
    .catalog-track {
      display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 16px;
    }
    .catalog-card {
      background: #fff; border-radius: 24px; padding: 22px; min-height: 210px; box-shadow: var(--shadow);
      border: 1px solid transparent; transition: transform .2s ease, box-shadow .2s ease;
    }
    .catalog-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
    .catalog-card.wide { background: var(--grad); color: #fff; }
    .catalog-card.wide h3, .catalog-card.wide p { color: #fff; }
    .catalog-card h3 { font-size: 20px; }
    .catalog-card p { font-size: 14px; margin: 0; }
    .bento {
      display: grid; grid-template-columns: 1.4fr 1fr 1fr; grid-template-rows: auto auto; gap: 16px;
    }
    .bento-card {
      background: #fff; border-radius: 24px; padding: 24px; box-shadow: var(--shadow);
    }
    .bento-card.main { grid-column: 1 / -1; display: grid; grid-template-columns: 1.2fr .8fr; gap: 20px; align-items: center; background: #fff; }
    .bento-card h3 { margin-bottom: 8px; }
    .mini-list { display: grid; gap: 8px; font-size: 14px; }
    .mini-list li { padding-left: 16px; position: relative; }
    .mini-list li::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--green); position: absolute; left: 0; top: 9px; }
    .ability-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .ability-card {
      background: #fff; border: 1px solid var(--line); border-radius: 24px; padding: 22px;
      transition: transform .2s ease, box-shadow .2s ease;
    }
    .ability-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
    .icon-blob {
      width: 48px; height: 48px; border-radius: 16px; display: grid; place-items: center; margin-bottom: 12px;
      background: var(--mint); color: var(--green-deep); border: 1px solid #cfe6e0;
    }
    .product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .product-card {
      background: #fff; border-radius: 32px; overflow: hidden; box-shadow: var(--shadow); position: relative;
      display: flex; flex-direction: column;
    }
    .product-card img { width: 100%; height: 230px; object-fit: cover; }
    .product-body { padding: 20px 20px 22px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
    .corner {
      position: absolute; top: 14px; right: 14px; z-index: 2;
    }
    .product-card .btn { width: 100%; margin-top: auto; }
    .nearby-wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 22px; }
    .city-list { display: grid; gap: 12px; }
    .city-item {
      display: grid; grid-template-columns: 88px 1fr auto; gap: 12px; align-items: center;
      background: #fff; border-radius: 20px; padding: 14px; box-shadow: var(--shadow);
    }
    .city-item img { width: 88px; height: 64px; object-fit: cover; border-radius: 12px; }
    .ladder { display: grid; gap: 10px; }
    .ladder-item {
      display: flex; justify-content: space-between; gap: 12px; align-items: center;
      background: var(--mint); border-radius: 18px; padding: 14px 16px;
    }
    .stats {
      background: var(--grad); color: #fff; padding: 42px 0;
    }
    .stats-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
    .stat-badge {
      background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.2);
      border-radius: 999px; padding: 16px 12px; text-align: center;
    }
    .stat-badge strong { display: block; font-size: 28px; line-height: 1.2; }
    .stat-badge span { font-size: 13px; opacity: .92; }
    .timeline { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; position: relative; }
    .timeline::before {
      content: ""; position: absolute; left: 4%; right: 4%; top: 28px; height: 2px; background: var(--green-light);
    }
    .step {
      background: #fff; border-radius: 22px; padding: 18px 16px 16px; box-shadow: var(--shadow); position: relative;
    }
    .step-num {
      width: 36px; height: 36px; border-radius: 50%; background: var(--grad); color: #fff;
      display: grid; place-items: center; font-size: 14px; margin-bottom: 10px;
    }
    .compare-table { width: 100%; border-collapse: separate; border-spacing: 0; margin-top: 28px; background: #fff; border-radius: 24px; overflow: hidden; box-shadow: var(--shadow); }
    .compare-table th, .compare-table td { padding: 14px 16px; border-bottom: 1px solid var(--line); text-align: left; font-size: 14px; }
    .compare-table th { background: var(--mint); color: var(--title); }
    .compare-table th.hot { background: var(--green); color: #fff; }
    .compare-table td.hot { background: #f3fbf9; }
    .dark-sec {
      background: var(--grad-dark); color: #d7efe9; padding: 92px 0; position: relative;
    }
    .dark-sec::before {
      content: ""; position: absolute; inset: 0; background: url("/assets/images/d4a564bc8f598c66.webp") center/cover no-repeat; opacity: .18;
    }
    .dark-grid { position: relative; display: grid; grid-template-columns: 1.1fr .9fr; gap: 24px; align-items: center; }
    .dark-sec h2, .quote { color: #e9f8f4; }
    .quote { font-size: 28px; line-height: 1.4; font-weight: 700; margin-bottom: 16px; }
    .case-mini { display: grid; gap: 12px; }
    .case-mini a, .case-mini article {
      display: grid; grid-template-columns: 96px 1fr; gap: 12px; background: rgba(255,255,255,.08);
      border: 1px solid rgba(255,255,255,.12); border-radius: 20px; padding: 12px; color: #e9f8f4;
    }
    .case-mini img { width: 96px; height: 72px; object-fit: cover; border-radius: 12px; }
    .masonry { display: grid; grid-template-columns: 1.3fr .8fr .9fr; grid-template-rows: auto auto; gap: 14px; }
    .case-tile {
      position: relative; border-radius: 24px; overflow: hidden; min-height: 220px; box-shadow: var(--shadow);
    }
    .case-tile.tall { min-height: 460px; grid-row: span 2; }
    .case-tile img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
    .case-tile .cap {
      position: absolute; left: 0; right: 0; bottom: 0; padding: 16px;
      background: linear-gradient(180deg, transparent, rgba(8,40,36,.78)); color: #fff;
    }
    .case-tile .hover-badge {
      position: absolute; top: 14px; left: 14px; opacity: 0; transform: translateY(-6px); transition: .2s ease;
    }
    .case-tile:hover .hover-badge { opacity: 1; transform: none; }
    .stories { display: grid; grid-template-columns: 1.25fr .75fr; gap: 18px; }
    .story-card { background: #fff; border-radius: 28px; overflow: hidden; box-shadow: var(--shadow); }
    .story-card img { width: 100%; height: 220px; object-fit: cover; }
    .story-card .body { padding: 22px; }
    .reviews { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; align-items: start; }
    .review-card {
      background: #fff; border-radius: 24px; padding: 22px; box-shadow: var(--shadow); border: 1px solid var(--line);
    }
    .review-card:nth-child(2) { margin-top: -22px; }
    .stars { color: var(--orange); letter-spacing: 2px; margin-bottom: 8px; }
    .scenes { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
    .scene-card {
      background: #fff; border-radius: 24px; overflow: hidden; box-shadow: var(--shadow); display: flex; flex-direction: column;
    }
    .scene-card img { height: 140px; width: 100%; object-fit: cover; }
    .scene-card .body { padding: 16px; }
    .news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
    .news-card { background: #fff; border-radius: 24px; overflow: hidden; box-shadow: var(--shadow); }
    .news-card img { height: 150px; width: 100%; object-fit: cover; }
    .news-card .body { padding: 16px; }
    .news-card h3 { font-size: 18px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; min-height: 50px; }
    .news-card p { font-size: 14px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
    .date { font-size: 13px; color: var(--muted); }
    .more-link { display: inline-flex; margin-top: 18px; font-weight: 700; }
    .partners { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
    .partner {
      background: #f7faf9; border: 1px solid var(--line); border-radius: 18px; min-height: 84px;
      display: grid; place-items: center; text-align: center; padding: 12px; color: var(--title); font-size: 14px;
    }
    .faq-list { display: grid; gap: 10px; }
    .faq-item { background: #fff; border: 1px solid var(--line); border-radius: 18px; overflow: hidden; }
    .faq-item.is-open { border-color: var(--green); box-shadow: var(--shadow); }
    .faq-item.is-open .faq-q { box-shadow: inset 4px 0 0 var(--green); }
    .faq-q {
      width: 100%; background: transparent; border: 0; text-align: left; padding: 16px 18px;
      display: flex; justify-content: space-between; gap: 12px; align-items: center; min-height: 56px; color: var(--title); font-weight: 700;
    }
    .faq-sign {
      width: 28px; height: 28px; border-radius: 8px; background: var(--mint); color: var(--green-deep);
      display: grid; place-items: center; flex-shrink: 0;
    }
    .faq-a { display: none; padding: 0 18px 16px; line-height: 1.8; color: var(--text); }
    .faq-item.is-open .faq-a { display: block; }
    .guard-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
    .guard {
      background: #fff; border: 1px solid var(--green); border-radius: 22px; padding: 18px; min-height: 160px;
    }
    .contact-card {
      background: #fff; border-radius: 32px; box-shadow: var(--shadow-hover); display: grid; grid-template-columns: 1.1fr .9fr; overflow: hidden;
    }
    .form-pad, .side-pad { padding: 32px; }
    .side-pad { background: var(--mint); }
    .field { display: grid; gap: 6px; margin-bottom: 14px; }
    .field label { font-size: 14px; color: var(--title); font-weight: 700; }
    .field input, .field select, .field textarea {
      min-height: 48px; border: 1px solid var(--line); border-radius: 16px; padding: 10px 14px; background: #fff; color: var(--title);
    }
    .field textarea { min-height: 110px; resize: vertical; }
    .field input.is-error, .field select.is-error, .field textarea.is-error { border-color: var(--orange); }
    .form-ok { display: none; background: var(--mint); border-radius: 16px; padding: 14px; color: var(--green-deep); margin-bottom: 12px; }
    .form-ok.is-show { display: block; }
    .err { color: var(--orange); font-size: 13px; min-height: 18px; }
    .footer { background: var(--dark); color: #c9ddd8; padding: 56px 0 24px; }
    .footer a { color: #e7f4f0; }
    .footer a:hover { color: var(--green-light); }
    .footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 24px; margin-bottom: 28px; }
    .footer h3 { color: #fff; font-size: 18px; }
    .copy { border-top: 1px solid rgba(255,255,255,.08); padding-top: 16px; font-size: 13px; color: #9fb4af; }
    @media (max-width: 1199px) {
      h1 { font-size: 40px; }
      .hero-fore, .intro-grid, .nearby-wrap, .dark-grid, .stories, .contact-card { grid-template-columns: 1fr; }
      .catalog-track, .bento, .ability-grid, .product-grid, .stats-grid, .timeline, .masonry, .reviews, .scenes, .news-grid, .partners, .guard-grid, .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .bento-card.main, .catalog-card.wide, .case-tile.tall { grid-column: auto; grid-row: auto; min-height: 240px; }
      .timeline::before { display: none; }
      .stats-grid { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 991px) {
      .nav-links, .nav-cta .btn { display: none; }
      .menu-toggle { display: inline-flex; }
      .hero { min-height: auto; }
      .hero-fore { padding: 48px 0 64px; }
      .review-card:nth-child(2) { margin-top: 0; }
    }
    @media (max-width: 767px) {
      .container { width: calc(100% - 32px); }
      h1 { font-size: 30px; }
      h2 { font-size: 24px; }
      main section { padding: 72px 0; }
      .topbar-hours, .topbar-link { display: none; }
      .catalog-track, .bento, .ability-grid, .product-grid, .stats-grid, .timeline, .masonry, .reviews, .scenes, .news-grid, .partners, .guard-grid, .footer-grid, .compare-grid {
        grid-template-columns: 1fr;
      }
      .product-grid { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; gap: 12px; padding-bottom: 8px; }
      .product-card { min-width: 82%; scroll-snap-align: start; }
      .guard-grid { display: flex; overflow-x: auto; gap: 12px; }
      .guard { min-width: 78%; }
      .city-item { grid-template-columns: 1fr; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { transition: none !important; animation: none !important; }
    }