/* roulang page: index */
:root {
      --primary: #2C6EEA;
      --primary-dark: #1E56C9;
      --primary-soft: #EAF1FB;
      --accent: #EE6C4D;
      --accent-dark: #D85A3C;
      --text: #1F2933;
      --text-secondary: #5B6775;
      --text-muted: #7A8694;
      --bg: #F5F8FC;
      --white: #FFFFFF;
      --info: #EAF1FB;
      --border: #E3EAF3;
      --border-strong: #C9D6E5;
      --dark-bg: #243044;
      --dark-text: #F3F6FA;
      --dark-muted: #B7C2D0;
      --dark-link: #8CB4FF;
      --footer-bg: #1C2836;
      --success: #2F9E6B;
      --danger: #D64545;
      --shadow: 0 8px 24px rgba(30, 70, 140, 0.08);
      --shadow-hover: 0 12px 32px rgba(30, 70, 140, 0.12);
      --shadow-soft: 0 4px 12px rgba(30, 70, 140, 0.06);
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-input: 8px;
      --radius-badge: 4px;
      --container: 1200px;
      --header-top: 36px;
      --header-main: 68px;
      --sticky-bar: 64px;
      --space-section: 104px;
      --space-section-m: 56px;
      --font: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
      --ease: 0.22s ease;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; overflow-x: clip; }
    body {
      margin: 0;
      font-family: var(--font);
      font-size: 16px;
      line-height: 1.75;
      color: var(--text);
      background: var(--bg);
      font-weight: 400;
      padding-bottom: calc(var(--sticky-bar) + 16px);
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--primary); text-decoration: none; transition: color var(--ease); }
    a:hover { color: var(--primary-dark); }
    button, input, select, textarea { font-family: inherit; font-size: inherit; }
    button { cursor: pointer; border: 0; background: none; }
    h1, h2, h3, h4, p { margin: 0; }
    ul, ol { margin: 0; padding: 0; list-style: none; }
    :focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
    .skip-link {
      position: absolute; left: 12px; top: -40px; z-index: 400;
      background: var(--primary); color: #fff; padding: 8px 14px; border-radius: 8px;
    }
    .skip-link:focus { top: 12px; color: #fff; }
    .container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 10px 22px; border-radius: var(--radius-btn);
      font-weight: 600; font-size: 15px; line-height: 1.2; letter-spacing: 0.02em;
      transition: background var(--ease), transform var(--ease), box-shadow var(--ease), color var(--ease), border-color var(--ease);
      white-space: nowrap;
    }
    .btn:active { transform: translateY(0); }
    .btn-primary { background: var(--primary); color: #fff; }
    .btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); }
    .btn-accent { background: var(--accent); color: #fff; }
    .btn-accent:hover { background: var(--accent-dark); color: #fff; transform: translateY(-1px); }
    .btn-outline { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,.75); }
    .btn-outline:hover { background: rgba(255,255,255,.12); color: #fff; }
    .btn-ghost { background: #fff; color: var(--primary); border: 1.5px solid var(--primary); }
    .btn-ghost:hover { background: var(--primary-soft); color: var(--primary-dark); transform: translateY(-1px); }
    .btn-block { width: 100%; }
    .badge {
      display: inline-flex; align-items: center; gap: 6px;
      padding: 3px 8px; border-radius: var(--radius-badge);
      background: var(--primary-soft); color: var(--primary-dark);
      font-size: 12px; font-weight: 600; letter-spacing: 0.02em;
    }
    .badge-dark { background: rgba(140,180,255,.16); color: var(--dark-link); }
    .site-header {
      position: sticky; top: 0; z-index: 120;
      background: #fff; border-bottom: 1px solid var(--border);
      transition: box-shadow var(--ease);
    }
    .site-header.is-scrolled { box-shadow: 0 6px 18px rgba(30, 70, 140, 0.08); }
    .topbar {
      display: flex; align-items: center; justify-content: space-between;
      height: var(--header-top); background: #F7FAFD; border-bottom: 1px solid var(--border);
      font-size: 12px; color: var(--text-secondary);
    }
    .topbar-left, .topbar-right { display: flex; align-items: center; gap: 18px; }
    .topbar a { color: var(--text-secondary); }
    .topbar a:hover { color: var(--primary); }
    .topbar-dot { width: 1px; height: 12px; background: var(--border-strong); }
    .navbar {
      display: flex; align-items: center; justify-content: space-between;
      height: var(--header-main); gap: 24px;
    }
    .logo { display: flex; align-items: center; gap: 10px; color: var(--text); flex-shrink: 0; }
    .logo:hover { color: var(--text); }
    .logo-mark {
      width: 36px; height: 36px; border-radius: 9px;
      background: linear-gradient(145deg, #3B82F6, #1E56C9);
      display: grid; place-items: center; box-shadow: 0 6px 12px rgba(44,110,234,.28);
    }
    .logo-text { font-size: 18px; font-weight: 600; letter-spacing: 0.01em; line-height: 1.2; }
    .logo-text small { display: block; font-size: 11px; color: var(--text-secondary); font-weight: 400; margin-top: 1px; }
    .nav-links { display: flex; align-items: center; gap: 4px; }
    .nav-links a {
      position: relative; padding: 8px 12px; color: var(--text); font-size: 15px; font-weight: 500;
    }
    .nav-links a::after {
      content: ""; position: absolute; left: 12px; right: 12px; bottom: 4px; height: 2px;
      background: var(--primary); transform: scaleX(0); transition: transform var(--ease);
    }
    .nav-links a:hover, .nav-links a.is-active { color: var(--primary); }
    .nav-links a:hover::after, .nav-links a.is-active::after { transform: scaleX(1); }
    .nav-cta { display: flex; align-items: center; gap: 12px; }
    .menu-toggle {
      display: none; width: 44px; height: 44px; border-radius: 8px;
      align-items: center; justify-content: center; flex-direction: column; gap: 5px;
      border: 1px solid var(--border);
    }
    .menu-toggle span { display: block; width: 18px; height: 2px; background: var(--text); 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); }
    .drawer-overlay {
      position: fixed; inset: 0; background: rgba(28,40,54,.45); z-index: 180;
      opacity: 0; visibility: hidden; transition: opacity var(--ease), visibility var(--ease);
    }
    .drawer-overlay.is-open { opacity: 1; visibility: visible; }
    .drawer {
      position: fixed; top: 0; right: 0; width: min(86vw, 360px); height: 100%;
      background: #fff; z-index: 190; transform: translateX(100%);
      transition: transform .28s ease; padding: 20px 22px 32px; overflow-y: auto;
      box-shadow: -12px 0 32px rgba(30,70,140,.12);
    }
    .drawer.is-open { transform: translateX(0); }
    .drawer-top { font-size: 13px; color: var(--text-secondary); padding-bottom: 16px; border-bottom: 1px solid var(--border); margin-bottom: 12px; }
    .drawer-top p { margin: 6px 0; }
    .drawer-links { display: flex; flex-direction: column; gap: 4px; }
    .drawer-links a { padding: 12px 8px; color: var(--text); font-weight: 500; border-radius: 8px; min-height: 44px; display: flex; align-items: center; }
    .drawer-links a:hover, .drawer-links a.is-active { background: var(--primary-soft); color: var(--primary); }
    .hero {
      position: relative; background: #1E3A5F;
    }
    .hero-slider { position: relative; min-height: 620px; overflow: hidden; }
    .hero-slide {
      position: absolute; inset: 0; opacity: 0; visibility: hidden;
      background-size: cover; background-position: center;
      transition: opacity .5s ease, visibility .5s ease;
    }
    .hero-slide.is-active { opacity: 1; visibility: visible; z-index: 1; position: relative; }
    .hero-slide::before {
      content: ""; position: absolute; inset: 0;
      background: linear-gradient(90deg, rgba(18,36,64,.78) 0%, rgba(18,36,64,.55) 48%, rgba(18,36,64,.28) 100%);
    }
    .hero-inner {
      position: relative; z-index: 2; display: grid; grid-template-columns: minmax(280px, 560px) 1fr;
      gap: 40px; align-items: center; min-height: 620px; padding: 48px 0 108px;
    }
    .hero-kicker { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
    .hero h1, .hero .slide-title {
      font-size: 42px; line-height: 1.22; font-weight: 600; color: #fff; margin-bottom: 16px;
    }
    .hero-lead { font-size: 16px; line-height: 1.8; color: rgba(255,255,255,.88); margin-bottom: 18px; max-width: 540px; }
    .hero-kpis { display: flex; flex-wrap: wrap; gap: 10px 18px; margin-bottom: 24px; }
    .hero-kpi { color: #fff; font-size: 13px; }
    .hero-kpi strong { display: block; font-size: 22px; font-weight: 600; line-height: 1.2; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-visual {
      justify-self: end; width: min(100%, 420px);
      border-radius: 12px; overflow: hidden;
      box-shadow: 0 16px 40px rgba(8,20,40,.28);
      border: 1px solid rgba(255,255,255,.18);
      background: rgba(255,255,255,.06);
    }
    .hero-visual img { width: 100%; height: 280px; object-fit: cover; }
    .hero-nav {
      position: absolute; z-index: 4; top: 46%; transform: translateY(-50%);
      width: 44px; height: 44px; border-radius: 8px;
      background: rgba(255,255,255,.16); color: #fff; border: 1px solid rgba(255,255,255,.28);
      display: grid; place-items: center;
    }
    .hero-nav:hover { background: rgba(255,255,255,.28); }
    .hero-prev { left: 16px; }
    .hero-next { right: 16px; }
    .hero-dots { position: absolute; z-index: 4; left: 50%; bottom: 92px; transform: translateX(-50%); display: flex; gap: 8px; }
    .hero-dots button {
      width: 28px; height: 8px; border-radius: 4px; background: rgba(255,255,255,.35);
    }
    .hero-dots button.is-active { background: #fff; }
    .hero-session {
      position: relative; z-index: 5; margin-top: -64px; margin-bottom: 8px;
    }
    .session-card {
      background: #fff; border-radius: 12px; box-shadow: var(--shadow);
      padding: 18px 22px; display: grid; grid-template-columns: 1.4fr auto auto; gap: 18px; align-items: center;
      border: 1px solid var(--border);
    }
    .session-card h2 { font-size: 16px; font-weight: 600; margin-bottom: 4px; }
    .session-card p { font-size: 13px; color: var(--text-secondary); }
    .countdown { display: flex; gap: 8px; }
    .count-box {
      min-width: 58px; background: var(--primary-soft); border-radius: 8px; text-align: center; padding: 6px 8px;
    }
    .count-box strong { display: block; font-size: 20px; color: var(--primary-dark); line-height: 1.2; }
    .count-box span { font-size: 11px; color: var(--text-secondary); }
    .section { padding: var(--space-section) 0; }
    .section-head { margin-bottom: 36px; max-width: 760px; }
    .section-index { display: inline-block; font-size: 12px; font-weight: 600; color: var(--primary); letter-spacing: 0.08em; margin-bottom: 8px; }
    .section h2 { font-size: 30px; line-height: 1.3; font-weight: 600; margin-bottom: 12px; }
    .section-desc { font-size: 15px; color: var(--text-secondary); line-height: 1.8; }
    .selling { background: #fff; border-top: 1px solid var(--border); }
    .selling-grid {
      display: grid; grid-template-columns: repeat(3, 1fr);
      border: 1px solid var(--border); border-radius: 12px; background: #fff;
    }
    .selling-item { padding: 36px 32px; }
    .selling-item + .selling-item { border-left: 1px solid var(--border); }
    .selling-icon {
      width: 44px; height: 44px; border-radius: 10px; background: var(--primary-soft);
      display: grid; place-items: center; margin-bottom: 16px; color: var(--primary);
    }
    .selling-item h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
    .selling-item p { font-size: 14px; color: var(--text-secondary); margin-bottom: 14px; }
    .selling-metric { font-size: 22px; font-weight: 600; color: var(--primary); }
    .selling-metric span { display: block; font-size: 13px; font-weight: 400; color: var(--text-muted); margin-top: 2px; }
    .product { background: var(--bg); }
    .product-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center; }
    .product-figure {
      border-radius: 12px; overflow: hidden; box-shadow: var(--shadow); background: #fff; border: 1px solid var(--border);
    }
    .product-figure img { width: 100%; height: 420px; object-fit: cover; }
    .spec-list { margin: 20px 0 28px; }
    .spec-list li {
      display: flex; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--border); font-size: 15px;
    }
    .spec-list li::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--primary); margin-top: 8px; flex-shrink: 0; }
    .scenes { background: #fff; }
    .scene-layout { display: grid; grid-template-columns: 5fr 7fr; gap: 28px; align-items: stretch; }
    .scene-tabs { display: flex; flex-direction: column; gap: 10px; }
    .scene-tab {
      text-align: left; padding: 16px 18px; border-radius: 12px; background: var(--bg);
      border: 1px solid var(--border); min-height: 72px; color: var(--text);
      transition: border-color var(--ease), background var(--ease), box-shadow var(--ease);
    }
    .scene-tab strong { display: block; font-size: 16px; margin-bottom: 4px; }
    .scene-tab span { font-size: 13px; color: var(--text-secondary); }
    .scene-tab.is-active, .scene-tab:hover {
      background: #fff; border-color: var(--primary); box-shadow: var(--shadow-soft);
    }
    .chat-panel {
      background: #fff; border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow);
      display: flex; flex-direction: column; min-height: 420px; overflow: hidden;
    }
    .chat-head {
      display: flex; align-items: center; justify-content: space-between;
      padding: 14px 18px; background: #F8FBFF; border-bottom: 1px solid var(--border); font-weight: 600; font-size: 14px;
    }
    .chat-status { font-size: 12px; color: var(--success); font-weight: 500; }
    .chat-body { padding: 18px; display: none; flex-direction: column; gap: 12px; flex: 1; background: #FCFDFE; }
    .chat-body.is-active { display: flex; }
    .bubble { max-width: 82%; padding: 10px 14px; border-radius: 12px; font-size: 14px; line-height: 1.65; }
    .bubble time { display: block; font-size: 11px; color: var(--text-muted); margin-top: 4px; }
    .bubble-user { align-self: flex-end; background: var(--primary); color: #fff; border-bottom-right-radius: 4px; }
    .bubble-user time { color: rgba(255,255,255,.75); }
    .bubble-bot { align-self: flex-start; background: #EEF3F9; color: var(--text); border-bottom-left-radius: 4px; }
    .bubble-human { align-self: flex-start; background: #FFF4EF; border: 1px solid #F6D2C6; color: var(--text); }
    .transfer-tag { display: inline-block; font-size: 12px; color: var(--accent); font-weight: 600; margin-bottom: 4px; }
    .capabilities { background: var(--bg); }
    .cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
    .cap-card {
      background: #fff; border-radius: 12px; box-shadow: var(--shadow); overflow: hidden;
      border: 1px solid var(--border); display: flex; flex-direction: column;
      transition: transform var(--ease), box-shadow var(--ease);
    }
    .cap-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
    .cap-card.featured { grid-column: span 1; border-top: 3px solid var(--primary); }
    .cap-card img { width: 100%; height: 150px; object-fit: cover; }
    .cap-card.featured img { height: 180px; }
    .cap-body { padding: 18px 18px 20px; flex: 1; display: flex; flex-direction: column; }
    .cap-body h3 { font-size: 18px; font-weight: 600; margin: 0 0 8px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
    .cap-body p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 14px; flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
    .cap-icon-wrap { height: 150px; display: grid; place-items: center; background: linear-gradient(180deg, #EEF4FC, #F8FBFF); color: var(--primary); }
    .modules { background: #fff; }
    .mod-layout { display: grid; grid-template-columns: 1.4fr 0.8fr; gap: 22px; }
    .mod-large {
      position: relative; border-radius: 12px; overflow: hidden; min-height: 420px;
      box-shadow: var(--shadow); color: #fff; display: flex; align-items: flex-end;
    }
    .mod-large img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
    .mod-large::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(20,36,60,.15), rgba(20,36,60,.78)); }
    .mod-large-body { position: relative; z-index: 1; padding: 32px; }
    .mod-large-body h3 { font-size: 26px; margin: 10px 0 12px; }
    .mod-large-body p { font-size: 15px; color: rgba(255,255,255,.88); margin-bottom: 18px; max-width: 460px; }
    .mod-side { display: flex; flex-direction: column; gap: 22px; }
    .mod-small {
      background: #fff; border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow-soft);
      padding: 22px; flex: 1; transition: transform var(--ease), box-shadow var(--ease);
    }
    .mod-small:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
    .mod-small h3 { font-size: 18px; margin: 10px 0 8px; }
    .mod-small p { font-size: 14px; color: var(--text-secondary); }
    .cases-dark { background: var(--dark-bg); color: var(--dark-text); }
    .cases-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 48px; align-items: start; }
    .cases-dark h2 { color: #fff; }
    .cases-dark .section-desc { color: var(--dark-muted); }
    .idea-line { margin-top: 20px; font-size: 15px; color: var(--dark-link); max-width: 360px; }
    .case-list { display: flex; flex-direction: column; gap: 14px; }
    .case-row {
      background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.08);
      border-radius: 12px; padding: 18px 20px;
    }
    .case-row h3 { font-size: 17px; margin-bottom: 6px; }
    .case-meta { font-size: 13px; color: var(--dark-link); margin-bottom: 6px; }
    .case-row p { font-size: 14px; color: var(--dark-muted); }
    .stories { background: var(--bg); }
    .timeline { display: flex; flex-direction: column; gap: 28px; }
    .story {
      display: grid; grid-template-columns: 220px 1fr; gap: 28px; align-items: center;
      background: #fff; border-radius: 12px; box-shadow: var(--shadow); overflow: hidden; border: 1px solid var(--border);
    }
    .story:nth-child(even) { grid-template-columns: 1fr 220px; }
    .story:nth-child(even) .story-pic { order: 2; }
    .story img { width: 100%; height: 180px; object-fit: cover; }
    .story-body { padding: 22px 24px 22px 0; }
    .story:nth-child(even) .story-body { padding: 22px 0 22px 24px; }
    .story-step { font-size: 12px; font-weight: 600; color: var(--primary); letter-spacing: 0.06em; margin-bottom: 6px; }
    .story h3 { font-size: 18px; margin-bottom: 8px; }
    .story p { font-size: 14px; color: var(--text-secondary); }
    .stats { background: #fff; border-top: 3px solid var(--primary); }
    .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
    .stat-item { text-align: center; padding: 12px 8px; }
    .stat-item strong { display: block; font-size: 36px; font-weight: 600; color: var(--primary); line-height: 1.1; }
    .stat-item span { font-size: 14px; color: var(--text-secondary); }
    .compare { background: var(--bg); }
    .table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 12px; background: #fff; box-shadow: var(--shadow-soft); }
    table { width: 100%; border-collapse: collapse; min-width: 680px; }
    thead th {
      position: sticky; top: 0; background: #F3F7FC; text-align: left; font-size: 14px; padding: 14px 16px;
      border-bottom: 1px solid var(--border); font-weight: 600;
    }
    thead th.hl { background: #DCE8FB; color: var(--primary-dark); }
    tbody td { padding: 13px 16px; font-size: 14px; border-bottom: 1px solid var(--border); color: var(--text-secondary); }
    tbody tr:nth-child(even) { background: #F9FBFE; }
    tbody td.hl { background: #F2F7FF; color: var(--text); font-weight: 500; }
    .th-label { color: var(--text-muted); font-weight: 500; width: 18%; }
    .reviews { background: #fff; }
    .review-track { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
    .review-card {
      background: #fff; border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow);
      padding: 22px; min-height: 220px; transition: transform var(--ease), box-shadow var(--ease);
    }
    .review-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
    .quote-mark { font-size: 32px; line-height: 1; color: var(--primary); opacity: .45; }
    .stars { color: #F5B942; letter-spacing: 2px; font-size: 13px; margin: 6px 0 10px; }
    .review-card p { font-size: 14px; color: var(--text-secondary); margin-bottom: 16px; }
    .reviewer { display: flex; align-items: center; gap: 10px; }
    .avatar {
      width: 40px; height: 40px; border-radius: 8px; display: grid; place-items: center;
      color: #fff; font-size: 13px; font-weight: 600;
    }
    .reviewer strong { display: block; font-size: 14px; }
    .reviewer span { font-size: 12px; color: var(--text-muted); }
    .implementation { background: var(--bg); }
    .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; position: relative; }
    .step {
      background: #fff; border-radius: 12px; border: 1px solid var(--border); padding: 22px 18px;
      box-shadow: var(--shadow-soft); position: relative;
    }
    .step-num { font-size: 12px; font-weight: 600; color: var(--primary); margin-bottom: 8px; }
    .step h3 { font-size: 17px; margin-bottom: 8px; }
    .step p { font-size: 14px; color: var(--text-secondary); }
    .news { background: #fff; }
    .news-layout { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 22px; }
    .news-feature {
      border-radius: 12px; overflow: hidden; position: relative; min-height: 340px; box-shadow: var(--shadow); color: #fff;
    }
    .news-feature img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
    .news-feature::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(20,36,60,.1), rgba(20,36,60,.82)); }
    .news-feature-body { position: relative; z-index: 1; padding: 28px; height: 100%; display: flex; flex-direction: column; justify-content: flex-end; }
    .news-feature h3 { font-size: 22px; margin: 8px 0 10px; }
    .news-list { display: flex; flex-direction: column; gap: 12px; }
    .news-item {
      background: var(--bg); border: 1px solid var(--border); border-radius: 12px; padding: 16px 18px;
    }
    .news-item h3 { font-size: 16px; margin-bottom: 6px; }
    .news-item p { font-size: 13px; color: var(--text-secondary); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
    .news-more { margin-top: 18px; }
    .faq { background: var(--bg); }
    .faq-list { max-width: 860px; }
    .faq-item { background: #fff; border: 1px solid var(--border); border-radius: 12px; margin-bottom: 10px; overflow: hidden; }
    .faq-item button {
      width: 100%; text-align: left; padding: 16px 20px; min-height: 56px;
      display: flex; justify-content: space-between; align-items: center; gap: 16px;
      font-size: 16px; font-weight: 600; color: var(--text);
    }
    .faq-item button span.icon { width: 22px; height: 22px; border-radius: 4px; background: var(--primary-soft); color: var(--primary); display: grid; place-items: center; flex-shrink: 0; }
    .faq-panel { display: none; padding: 0 20px 16px; background: #F8FBFF; color: var(--text-secondary); font-size: 15px; }
    .faq-item.is-open .faq-panel { display: block; }
    .faq-panel p + p { margin-top: 8px; }
    .guarantee { background: #fff; padding-top: 64px; padding-bottom: 64px; }
    .g-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; background: var(--info); border-radius: 12px; padding: 8px; }
    .g-item { padding: 22px 16px; text-align: left; }
    .g-item h3 { font-size: 16px; margin: 8px 0 6px; }
    .g-item p { font-size: 13px; color: var(--text-secondary); }
    .demo { background: linear-gradient(180deg, #EEF4FC, #F5F8FC); }
    .demo-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 40px; align-items: start; }
    .demo-points { display: flex; flex-direction: column; gap: 16px; margin-top: 20px; }
    .demo-point { display: flex; gap: 12px; background: #fff; border-radius: 12px; padding: 16px; border: 1px solid var(--border); }
    .demo-point strong { display: block; font-size: 15px; margin-bottom: 4px; }
    .demo-point span { font-size: 13px; color: var(--text-secondary); }
    .form-card { background: #fff; border-radius: 12px; box-shadow: var(--shadow); padding: 28px; border: 1px solid var(--border); }
    .form-row { margin-bottom: 14px; }
    .form-row label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
    .req { color: var(--danger); }
    .form-row input, .form-row select, .form-row textarea {
      width: 100%; border: 1px solid var(--border-strong); border-radius: var(--radius-input);
      padding: 10px 12px; min-height: 44px; background: #fff; color: var(--text);
      transition: border-color var(--ease), box-shadow var(--ease);
    }
    .form-row textarea { min-height: 96px; resize: vertical; }
    .form-row input:focus, .form-row select:focus, .form-row textarea:focus {
      outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(44,110,234,.15);
    }
    .field-error { display: none; color: var(--danger); font-size: 12px; margin-top: 4px; }
    .form-row.has-error input, .form-row.has-error select, .form-row.has-error textarea { border-color: var(--danger); }
    .form-row.has-error .field-error { display: block; }
    .form-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin-top: 8px; }
    .form-phone { font-size: 14px; color: var(--text-secondary); }
    .form-phone a { font-weight: 600; color: var(--text); }
    .form-success {
      display: none; background: #E9F8F0; color: #1E6B48; border-radius: 8px; padding: 12px 14px; font-size: 14px; margin-bottom: 12px;
    }
    .form-success.is-show { display: block; }
    .sticky-cta {
      position: fixed; left: 0; right: 0; bottom: 0; z-index: 90;
      background: #1C2836; color: #fff; min-height: var(--sticky-bar);
      display: flex; align-items: center;
      padding: 8px 16px calc(8px + env(safe-area-inset-bottom));
      box-shadow: 0 -8px 24px rgba(0,0,0,.18);
    }
    .sticky-cta.is-hidden { display: none; }
    .sticky-inner { width: 100%; max-width: var(--container); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
    .sticky-inner p { font-size: 14px; margin: 0; }
    .sticky-actions { display: flex; align-items: center; gap: 10px; }
    .sticky-actions a.tel { color: #fff; font-weight: 600; }
    .sticky-close {
      width: 36px; height: 36px; border-radius: 8px; color: #fff; border: 1px solid rgba(255,255,255,.2);
    }
    .site-footer { background: var(--footer-bg); color: #D5DDE6; padding: 56px 0 24px; font-size: 13px; }
    .footer-grid { display: grid; grid-template-columns: 1.3fr 0.8fr 1fr 0.9fr; gap: 32px; margin-bottom: 32px; }
    .site-footer h3 { color: #fff; font-size: 15px; margin-bottom: 12px; }
    .site-footer p { line-height: 1.8; margin-bottom: 8px; }
    .site-footer a { color: #D5DDE6; }
    .site-footer a:hover { color: #fff; }
    .footer-logo { color: #fff; margin-bottom: 10px; }
    .copy { border-top: 1px solid rgba(255,255,255,.08); padding-top: 16px; color: #9AA6B4; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
    @media (max-width: 1199px) {
      .hero h1, .hero .slide-title { font-size: 36px; }
      .product-figure img { height: 360px; }
    }
    @media (max-width: 991px) {
      .topbar { display: none; }
      .nav-links, .nav-cta .btn { display: none; }
      .menu-toggle { display: flex; }
      .hero-slider, .hero-inner { min-height: 0; }
      .hero-inner { grid-template-columns: 1fr; padding: 36px 0 120px; }
      .hero h1, .hero .slide-title { font-size: 30px; }
      .hero-visual { width: 100%; }
      .hero-visual img { height: 200px; }
      .hero-nav { display: none; }
      .session-card { grid-template-columns: 1fr; }
      .selling-grid, .product-grid, .scene-layout, .cap-grid, .mod-layout, .cases-grid, .stats-grid, .review-track, .steps, .news-layout, .g-grid, .demo-grid, .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .mod-large { min-height: 320px; }
      .story, .story:nth-child(even) { grid-template-columns: 1fr; }
      .story:nth-child(even) .story-pic { order: 0; }
      .story-body, .story:nth-child(even) .story-body { padding: 18px; }
    }
    @media (max-width: 767px) {
      :root { --space-section: 56px; }
      .section h2 { font-size: 24px; }
      .hero h1, .hero .slide-title { font-size: 28px; }
      .hero-actions { flex-direction: column; }
      .hero-actions .btn { width: 100%; }
      .selling-grid, .product-grid, .scene-layout, .cap-grid, .mod-layout, .cases-grid, .stats-grid, .review-track, .steps, .news-layout, .g-grid, .demo-grid, .footer-grid {
        grid-template-columns: 1fr;
      }
      .selling-item + .selling-item { border-left: 0; border-top: 1px solid var(--border); }
      .hero-dots { bottom: 118px; }
      .compare-table thead { display: none; }
      .compare-table, .compare-table tbody, .compare-table tr, .compare-table td { display: block; width: 100%; min-width: 0; }
      .compare-table tr { padding: 8px 0 12px; border-bottom: 8px solid var(--bg); }
      .compare-table td { display: flex; justify-content: space-between; gap: 12px; border-bottom: 1px solid var(--border); }
      .compare-table td::before { content: attr(data-label); font-weight: 600; color: var(--text); flex: 0 0 38%; }
      .sticky-inner p { font-size: 13px; }
      .sticky-actions .tel { display: none; }
      .copy { font-size: 12px; }
    }
    @media (max-width: 519px) {
      .container { padding: 0 16px; }
      .logo-text { font-size: 16px; }
      .count-box { min-width: 48px; }
      .hero-kpis { gap: 8px 12px; }
      .hero-kpi strong { font-size: 18px; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { transition: none !important; animation: none !important; }
    }