/* roulang page: index */
:root {
      --ink: #141613;
      --pine: #3D6B5A;
      --pine-deep: #2C5244;
      --pine-soft: #6E9083;
      --copper: #B08968;
      --copper-deep: #8C6A4C;
      --paper: #F3F0E8;
      --surface: #E7E2D6;
      --cream: #FAF7F0;
      --dark: #1C1E1B;
      --dark-2: #242622;
      --muted: #5E5C56;
      --faint: #8A867C;
      --line: rgba(20, 22, 19, 0.08);
      --line-12: rgba(20, 22, 19, 0.12);
      --line-inv: rgba(243, 240, 232, 0.12);
      --white: #FFFdf8;
      --radius: 8px;
      --radius-sm: 6px;
      --shadow: 0 12px 40px rgba(20, 22, 19, 0.06);
      --shadow-soft: 0 1px 0 rgba(20, 22, 19, 0.06);
      --serif: "Noto Serif SC", "Songti SC", "SimSun", serif;
      --sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --container: 1200px;
      --header-h: 108px;
      --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    html, body { margin: 0; padding: 0; }
    body {
      font-family: var(--sans);
      font-size: 16px;
      line-height: 1.75;
      color: var(--ink);
      background: var(--paper);
      min-width: 320px;
      overflow-x: hidden;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--pine-deep); text-decoration: none; transition: color .25s var(--ease); }
    a:hover { color: var(--copper-deep); }
    button, input, select, textarea { font-family: inherit; font-size: inherit; }
    button { cursor: pointer; border: 0; background: none; }
    h1, h2, h3, h4 { font-family: var(--serif); font-weight: 600; letter-spacing: 0.01em; margin: 0; color: var(--ink); }
    p { margin: 0 0 1.1em; }
    p:last-child { margin-bottom: 0; }
    ul { margin: 0; padding: 0; list-style: none; }
    :focus-visible { outline: 2px solid var(--pine); outline-offset: 3px; }
    .skip {
      position: absolute; left: -999px; top: 8px;
      background: var(--ink); color: var(--paper); padding: 8px 14px; z-index: 100;
    }
    .skip:focus { left: 8px; }
    .container {
      width: min(100% - 40px, var(--container));
      margin: 0 auto;
    }
    .kicker {
      display: inline-flex; align-items: center; gap: 10px;
      font-size: 12px; letter-spacing: 0.18em; text-transform: none;
      color: var(--copper-deep); font-weight: 500; margin-bottom: 16px;
    }
    .kicker::before {
      content: ""; width: 22px; height: 1px; background: var(--copper);
    }
    .section {
      padding: 112px 0;
      position: relative;
    }
    .section-head {
      max-width: 760px;
      margin-bottom: 56px;
    }
    .section-head.wide { max-width: none; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: end; }
    .section h2 {
      font-size: clamp(28px, 3.2vw, 40px);
      line-height: 1.22;
      font-weight: 600;
      margin-bottom: 18px;
    }
    .section-lead {
      color: var(--muted); font-size: 16px; line-height: 1.8;
    }
    .section-lead + .section-lead { margin-top: 12px; }
    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 0 22px;
      border-radius: 6px; font-weight: 500; letter-spacing: 0.04em;
      transition: transform .28s var(--ease), background .28s var(--ease), color .28s var(--ease), border-color .28s var(--ease);
      white-space: nowrap;
    }
    .btn-primary {
      background: var(--ink); color: var(--paper);
    }
    .btn-primary:hover, .btn-primary:focus-visible {
      background: var(--pine); color: var(--cream); transform: translate(3px, -2px);
    }
    .btn-primary:active { transform: translate(1px, 0); }
    .btn-ghost {
      background: transparent; color: var(--ink);
      border: 1px solid var(--line-12);
    }
    .btn-ghost:hover, .btn-ghost:focus-visible {
      border-color: var(--ink); transform: translate(3px, -2px);
    }
    .btn-line {
      background: transparent; color: var(--paper);
      border: 1px solid rgba(243, 240, 232, 0.35);
    }
    .btn-line:hover { background: var(--paper); color: var(--ink); transform: translate(3px, -2px); }
    .btn-copper {
      background: var(--copper); color: var(--ink);
    }
    .btn-copper:hover { background: var(--copper-deep); color: var(--cream); transform: translate(3px, -2px); }
    .site-header {
      position: sticky; top: 0; z-index: 70;
      background: rgba(243, 240, 232, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--line);
      transition: box-shadow .3s var(--ease);
    }
    .site-header.is-compact { box-shadow: 0 8px 24px rgba(20, 22, 19, 0.06); }
    .topbar {
      display: flex; align-items: center; justify-content: space-between;
      min-height: 36px;
      border-bottom: 1px solid var(--line);
      font-size: 12px; color: var(--muted);
      transition: min-height .3s var(--ease), opacity .3s, padding .3s;
    }
    .topbar-left, .topbar-right { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
    .topbar a { color: var(--muted); }
    .topbar a:hover { color: var(--pine); }
    .topbar .sep { width: 1px; height: 10px; background: var(--line-12); }
    .topbar .cta-mini { color: var(--pine-deep); font-weight: 600; }
    .site-header.is-compact .topbar {
      min-height: 0; height: 0; overflow: hidden; opacity: 0; border: 0; padding: 0;
    }
    .mainbar {
      display: flex; align-items: center; justify-content: space-between;
      min-height: 72px; gap: 24px;
      transition: min-height .3s var(--ease);
    }
    .site-header.is-compact .mainbar { min-height: 58px; }
    .logo {
      display: flex; flex-direction: column; gap: 0; line-height: 1.1;
      color: var(--ink); flex-shrink: 0;
    }
    .logo .mark {
      font-family: var(--serif); font-size: 22px; font-weight: 600; letter-spacing: 0.08em;
      transition: font-size .3s var(--ease);
    }
    .logo .sub {
      font-size: 10px; letter-spacing: 0.28em; color: var(--copper-deep); margin-top: 4px;
    }
    .site-header.is-compact .logo .mark { font-size: 18px; }
    .nav { display: flex; align-items: center; gap: 4px; }
    .nav a {
      position: relative; color: var(--ink); font-size: 14px; padding: 8px 10px;
      min-height: 44px; display: inline-flex; align-items: center;
    }
    .nav a::after {
      content: ""; position: absolute; left: 10px; right: auto; bottom: 8px;
      width: 0; height: 1px; background: var(--pine);
      transition: width .32s var(--ease);
    }
    .nav a:hover, .nav a.is-active { color: var(--pine-deep); }
    .nav a:hover::after, .nav a.is-active::after { width: calc(100% - 20px); }
    .header-cta { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
    .hamburger {
      display: none; width: 44px; height: 44px; position: relative;
      border: 1px solid var(--line-12); border-radius: 6px;
    }
    .hamburger span, .hamburger::before, .hamburger::after {
      position: absolute; left: 12px; right: 12px; height: 1px; background: var(--ink);
      content: ""; transition: transform .25s, opacity .25s, top .25s;
    }
    .hamburger span { top: 21px; }
    .hamburger::before { top: 15px; }
    .hamburger::after { top: 27px; }
    .hamburger.is-open span { opacity: 0; }
    .hamburger.is-open::before { top: 21px; transform: rotate(45deg); }
    .hamburger.is-open::after { top: 21px; transform: rotate(-45deg); }
    .drawer-mask {
      position: fixed; inset: 0; background: rgba(20, 22, 19, 0.42);
      opacity: 0; pointer-events: none; z-index: 80; transition: opacity .3s;
    }
    .drawer-mask.show { opacity: 1; pointer-events: auto; }
    .drawer {
      position: fixed; top: 0; right: 0; height: 100%; width: min(400px, 88vw);
      background: var(--cream); z-index: 81; transform: translateX(100%);
      transition: transform .38s var(--ease);
      padding: 28px 28px 40px; overflow-y: auto;
      display: flex; flex-direction: column; gap: 8px;
    }
    .drawer.open { transform: translateX(0); }
    .drawer .logo { margin-bottom: 18px; }
    .drawer a.d-link {
      min-height: 48px; display: flex; align-items: center;
      border-bottom: 1px solid var(--line); color: var(--ink); font-size: 16px;
    }
    .drawer .btn { margin-top: 22px; width: 100%; }
    .hero {
      position: relative; min-height: calc(100svh - 108px);
      display: flex; align-items: center; overflow: hidden;
      background: var(--dark);
      color: var(--paper);
    }
    .hero-slides { position: absolute; inset: 0; }
    .hero-slide {
      position: absolute; inset: 0; opacity: 0;
      transition: opacity 1s var(--ease);
    }
    .hero-slide.is-on { opacity: 1; z-index: 1; }
    .hero-slide img {
      width: 100%; height: 100%; object-fit: cover;
      transform: scale(1);
    }
    .hero-slide.is-on img { animation: kenburns 18s ease-out forwards; }
    @keyframes kenburns {
      from { transform: scale(1) translate3d(0,0,0); }
      to { transform: scale(1.06) translate3d(0,-1.2%,0); }
    }
    .hero-slide::after {
      content: ""; position: absolute; inset: 0;
      background:
        linear-gradient(180deg, rgba(20,22,19,0.38) 0%, rgba(20,22,19,0.55) 42%, rgba(20,22,19,0.72) 100%),
        repeating-linear-gradient(90deg, rgba(243,240,232,0.035) 0 1px, transparent 1px 72px);
    }
    .hero-inner {
      position: relative; z-index: 2; width: 100%; padding: 72px 0 88px;
    }
    .hero-brand {
      font-family: var(--serif); font-size: 14px; letter-spacing: 0.32em;
      color: var(--copper); margin-bottom: 18px;
    }
    .hero h1 {
      font-size: clamp(36px, 5.4vw, 68px); line-height: 1.14; font-weight: 550;
      color: var(--paper); max-width: 16em; margin-bottom: 22px;
    }
    .hero-lead {
      max-width: 720px; color: rgba(243,240,232,0.84); font-size: 16px; line-height: 1.85;
      margin-bottom: 28px;
    }
    .search-panel {
      background: rgba(243, 240, 232, 0.94);
      color: var(--ink);
      border-radius: 10px;
      padding: 18px;
      max-width: 860px;
      box-shadow: var(--shadow);
    }
    .search-row { display: grid; grid-template-columns: 1fr auto; gap: 10px; }
    .search-row input {
      min-height: 48px; border: 1px solid var(--line-12); border-radius: 6px;
      padding: 0 16px; background: var(--white); color: var(--ink);
      transition: border-color .2s;
    }
    .search-row input:focus { border-color: var(--pine); outline: none; }
    .hot-cats {
      display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px;
    }
    .chip {
      min-height: 36px; padding: 0 12px; border-radius: 6px;
      border: 1px solid var(--line-12); background: transparent;
      color: var(--ink); font-size: 13px;
      display: inline-flex; align-items: center;
      transition: background .2s, border-color .2s, color .2s, transform .2s;
    }
    .chip:hover, .chip:focus-visible {
      border-color: var(--pine); color: var(--pine-deep); transform: translateY(-1px);
    }
    .hero-foot {
      display: flex; align-items: flex-end; justify-content: space-between; gap: 24px;
      margin-top: 28px; flex-wrap: wrap;
    }
    .hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; }
    .slide-cap {
      font-size: 13px; color: rgba(243,240,232,0.78); max-width: 420px;
    }
    .slide-cap strong { color: var(--paper); font-weight: 600; display: block; margin-bottom: 6px; font-family: var(--serif); }
    .hero-controls {
      display: flex; align-items: center; gap: 10px;
    }
    .dots { display: flex; gap: 8px; }
    .dot {
      width: 22px; height: 3px; background: rgba(243,240,232,0.28); border-radius: 2px;
      min-height: 22px; padding: 10px 0; background-clip: content-box;
    }
    .dot.is-on { background: var(--copper); background-clip: content-box; }
    .pause-btn {
      min-width: 44px; min-height: 44px; color: var(--paper);
      border: 1px solid rgba(243,240,232,0.28); border-radius: 6px; font-size: 12px;
    }
    .pause-btn:hover { border-color: var(--copper); color: var(--copper); }
    .offers { background: var(--cream); }
    .offer-grid {
      display: grid; grid-template-columns: 1.05fr 0.95fr 1fr; gap: 28px;
      align-items: stretch;
    }
    .offer {
      padding: 8px 8px 28px;
      border-bottom: 1px solid var(--copper);
      position: relative;
    }
    .offer:nth-child(2) { margin-top: 36px; }
    .offer:nth-child(3) { margin-top: 18px; }
    .offer-num {
      font-family: var(--serif); font-size: clamp(72px, 8vw, 104px);
      line-height: 0.78; color: transparent;
      -webkit-text-stroke: 1px var(--ink);
      letter-spacing: -0.04em; margin-bottom: 18px;
    }
    .offer h3 { font-size: 22px; margin-bottom: 12px; }
    .offer p { color: var(--muted); font-size: 15px; }
    .split {
      display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 64px; align-items: center;
    }
    .split.rev { grid-template-columns: 0.95fr 1.05fr; }
    .split-media {
      position: relative;
    }
    .split-media img {
      width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: 8px;
      border: 1px solid var(--line);
    }
    .split-media .tag {
      position: absolute; left: 16px; bottom: 16px;
      background: var(--paper); color: var(--ink); font-size: 12px;
      padding: 6px 10px; border-radius: 6px; letter-spacing: 0.08em;
    }
    .fact {
      margin-top: 22px; padding: 16px 18px;
      background: var(--surface); border-left: 2px solid var(--pine);
      font-size: 15px; color: var(--ink); line-height: 1.75;
    }
    .scenes { background: var(--paper); }
    .scene-layout {
      display: grid; grid-template-columns: 280px 1fr; gap: 40px;
    }
    .scene-tabs { display: flex; flex-direction: column; gap: 8px; }
    .scene-tab {
      text-align: left; min-height: 56px; padding: 12px 16px;
      border: 1px solid var(--line); border-radius: 8px; background: var(--cream);
      color: var(--ink); transition: border-color .2s, background .2s, transform .2s;
    }
    .scene-tab small { display: block; color: var(--faint); font-size: 12px; margin-top: 2px; }
    .scene-tab.is-on, .scene-tab:hover {
      border-color: var(--pine); background: #eef4f0;
    }
    .scene-stage img {
      width: 100%; aspect-ratio: 16/10; object-fit: cover; border-radius: 8px;
    }
    .timeline {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
      margin-top: 18px;
    }
    .tl {
      padding: 14px 14px 16px; background: var(--cream);
      border-top: 2px solid var(--copper); border-radius: 0 0 8px 8px;
    }
    .tl b { display: block; font-family: var(--serif); font-size: 15px; margin-bottom: 6px; }
    .tl span { color: var(--muted); font-size: 13px; line-height: 1.65; }
    .abilities { background: var(--surface); }
    .ability-grid {
      display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
    }
    .ability {
      background: var(--paper); border: 1px solid var(--line-12); border-radius: 8px;
      overflow: hidden; transition: border-color .28s, transform .28s var(--ease);
    }
    .ability:hover { border-color: var(--pine); transform: translateY(-3px); }
    .ability img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
    .ability-body { padding: 18px 18px 22px; }
    .ability-no { font-family: var(--serif); font-size: 13px; color: var(--copper-deep); letter-spacing: 0.12em; }
    .ability h3 { font-size: 22px; margin: 8px 0 10px; }
    .ability p { color: var(--muted); font-size: 14px; line-height: 1.7; }
    .solutions { background: var(--cream); }
    .sol-list { display: grid; gap: 22px; }
    .sol {
      display: grid; grid-template-columns: 340px 1fr auto; gap: 28px; align-items: center;
      background: var(--paper); border: 1px solid var(--line); border-radius: 10px;
      padding: 16px; transition: border-color .25s;
    }
    .sol:hover { border-color: var(--pine); }
    .sol img { width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: 8px; }
    .sol h3 { font-size: 24px; margin-bottom: 8px; }
    .sol p { color: var(--muted); margin-bottom: 12px; }
    .meta-row { display: flex; flex-wrap: wrap; gap: 8px; }
    .badge {
      font-size: 12px; padding: 4px 10px; border-radius: 999px;
      background: var(--surface); color: var(--ink); letter-spacing: 0.04em;
    }
    .cases {
      background: var(--dark); color: var(--paper);
      overflow: hidden;
    }
    .cases::before {
      content: ""; position: absolute; inset: 0;
      background: repeating-linear-gradient(115deg, rgba(61,107,90,0.07) 0 1px, transparent 1px 48px);
      animation: drift 28s linear infinite;
      pointer-events: none;
    }
    @keyframes drift { from { background-position: 0 0; } to { background-position: 420px 0; } }
    .cases h2, .cases .section-lead { color: var(--paper); }
    .cases .section-lead { color: rgba(243,240,232,0.72); }
    .case-grid {
      display: grid; grid-template-columns: 1.4fr 0.8fr; gap: 22px;
      position: relative;
    }
    .case-main { position: relative; }
    .case-main img { width: 100%; aspect-ratio: 16/10; object-fit: cover; border-radius: 8px; opacity: 0.92; }
    .case-main .overlay {
      position: absolute; left: 0; right: 0; bottom: 0; padding: 24px;
      background: linear-gradient(180deg, transparent, rgba(20,22,19,0.88));
      border-radius: 0 0 8px 8px;
    }
    .case-main h3 { color: var(--paper); font-size: 24px; margin-bottom: 8px; }
    .datapoint { color: var(--pine-soft); font-family: var(--serif); font-size: 28px; margin-right: 16px; }
    .case-side { display: flex; flex-direction: column; gap: 14px; }
    .case-mini {
      display: grid; grid-template-columns: 120px 1fr; gap: 14px;
      padding: 12px; border: 1px solid var(--line-inv); border-radius: 8px;
    }
    .case-mini img { width: 100%; height: 88px; object-fit: cover; border-radius: 6px; }
    .case-mini h3 { color: var(--paper); font-size: 18px; margin-bottom: 6px; }
    .case-mini p { color: rgba(243,240,232,0.68); font-size: 13px; }
    .trust { background: var(--paper); }
    .cover-row {
      display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin-bottom: 36px;
    }
    .cover-cell {
      padding: 22px 16px; text-align: left;
      background: var(--cream); border-bottom: 1px solid var(--copper); border-radius: 6px 6px 0 0;
    }
    .cover-cell b { display: block; font-family: var(--serif); font-size: 20px; margin-bottom: 4px; }
    .cover-cell span { color: var(--muted); font-size: 13px; }
    .logo-wall {
      display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px;
    }
    .logo-item {
      min-height: 76px; display: flex; align-items: center; justify-content: center;
      text-align: center; padding: 10px; font-size: 13px; color: var(--faint);
      border: 1px solid var(--line); border-radius: 8px; filter: grayscale(1);
      transition: filter .25s, color .25s, border-color .25s;
    }
    .logo-item:hover { filter: none; color: var(--pine-deep); border-color: var(--pine); }
    .compare { background: var(--cream); }
    .compare-table {
      width: 100%; border-collapse: collapse; background: var(--paper);
      border: 1px solid var(--line);
    }
    .compare-table th, .compare-table td {
      padding: 16px 18px; text-align: left; vertical-align: top;
      border-bottom: 1px solid var(--line); font-size: 15px;
    }
    .compare-table th {
      font-family: var(--serif); font-weight: 600; font-size: 16px;
      background: var(--surface);
    }
    .compare-table th:nth-child(3), .compare-table td:nth-child(3) {
      background: #eef4f0;
    }
    .compare-table td:first-child { font-weight: 600; width: 18%; }
    .stories { background: var(--paper); }
    .story-main {
      display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center;
      margin-bottom: 28px;
    }
    .quote {
      font-family: var(--serif); font-size: clamp(22px, 2.4vw, 30px);
      line-height: 1.45; position: relative; padding-left: 22px;
      border-left: 3px solid var(--copper);
    }
    .who { margin-top: 18px; color: var(--muted); font-size: 14px; }
    .story-main img { width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: 8px; }
    .story-sub { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
    .story-card {
      display: grid; grid-template-columns: 140px 1fr; gap: 16px;
      padding: 14px; background: var(--cream); border-radius: 8px; border: 1px solid var(--line);
    }
    .story-card img { width: 100%; height: 100%; object-fit: cover; border-radius: 6px; min-height: 96px; }
    .stats {
      background: var(--ink); color: var(--paper); padding: 72px 0;
    }
    .stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
    .stat { padding: 8px 8px 0; }
    .stat b {
      display: block; font-family: var(--serif); font-size: clamp(36px, 4vw, 52px);
      line-height: 1; color: var(--copper); font-weight: 600;
    }
    .stat b i { font-style: normal; font-size: 18px; margin-left: 4px; color: var(--pine-soft); }
    .stat span { display: block; margin-top: 10px; color: rgba(243,240,232,0.72); font-size: 14px; }
    .stat-note { margin-top: 22px; font-size: 12px; color: rgba(243,240,232,0.48); }
    .reviews { background: var(--surface); }
    .review-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .review {
      background: var(--paper); padding: 22px 22px 20px 22px;
      border-left: 3px solid var(--copper); border-radius: 0 8px 8px 0;
    }
    .review p { font-size: 15px; color: var(--ink); }
    .review .who { margin-top: 14px; }
    .news { background: var(--cream); }
    .news-list { display: grid; gap: 14px; }
    .news-item {
      display: grid; grid-template-columns: 220px 1fr auto; gap: 22px; align-items: center;
      padding: 14px; background: var(--paper); border: 1px solid var(--line); border-radius: 8px;
      transition: border-color .25s, transform .25s;
    }
    .news-item:hover { border-color: var(--pine); transform: translateX(4px); }
    .news-item img { width: 100%; aspect-ratio: 16/10; object-fit: cover; border-radius: 6px; }
    .news-item h3 { font-size: 20px; margin-bottom: 8px; }
    .news-item p { color: var(--muted); font-size: 14px; }
    .news-date { font-family: var(--serif); color: var(--copper-deep); font-size: 13px; letter-spacing: 0.08em; }
    .more-link {
      display: inline-flex; margin-top: 22px; min-height: 44px; align-items: center;
      color: var(--pine-deep); font-weight: 600; border-bottom: 1px solid var(--pine);
    }
    .sim { background: var(--paper); }
    .loop {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
      background: var(--line-12); border: 1px solid var(--line); margin-top: 28px;
    }
    .loop li { background: var(--cream); padding: 18px; }
    .loop b { display: block; font-family: var(--serif); margin-bottom: 6px; }
    .loop span { color: var(--muted); font-size: 14px; }
    .faq { background: var(--surface); }
    .faq-list { display: grid; gap: 10px; max-width: 920px; }
    .faq-item { background: var(--paper); border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
    .faq-q {
      width: 100%; text-align: left; min-height: 56px; padding: 14px 52px 14px 18px;
      font-size: 16px; font-weight: 600; position: relative; color: var(--ink);
    }
    .faq-q::after {
      content: ""; position: absolute; right: 20px; top: 50%; width: 12px; height: 12px;
      border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink);
      transform: translateY(-70%) rotate(45deg); transition: transform .28s;
    }
    .faq-item.open .faq-q::after { transform: translateY(-20%) rotate(225deg); }
    .faq-a {
      display: grid; grid-template-rows: 0fr; transition: grid-template-rows .34s var(--ease);
    }
    .faq-item.open .faq-a { grid-template-rows: 1fr; }
    .faq-a > div { overflow: hidden; }
    .faq-a p { padding: 0 18px 18px; color: var(--muted); font-size: 15px; }
    .consult { background: var(--cream); padding-bottom: 128px; }
    .guarantee {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 48px;
    }
    .g-item {
      padding: 20px 18px; background: var(--paper); border-radius: 8px;
      border-top: 2px solid var(--pine);
    }
    .g-item h3 { font-size: 18px; margin-bottom: 8px; }
    .g-item p { color: var(--muted); font-size: 14px; }
    .flow {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-bottom: 40px;
    }
    .flow li {
      padding: 8px 18px 8px 0; position: relative;
    }
    .flow li::after {
      content: ""; position: absolute; left: 0; right: 18px; top: 18px; height: 1px;
      background: var(--line-12);
    }
    .flow b {
      position: relative; z-index: 1; background: var(--cream); padding-right: 10px;
      font-family: var(--serif); color: var(--pine-deep);
    }
    .flow span { display: block; margin-top: 8px; color: var(--muted); font-size: 14px; position: relative; }
    .consult-grid {
      display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 36px; align-items: start;
    }
    .form {
      background: var(--paper); padding: 28px; border: 1px solid var(--line); border-radius: 10px;
    }
    .form h3 { font-size: 24px; margin-bottom: 8px; }
    .form .hint { color: var(--muted); margin-bottom: 18px; font-size: 14px; }
    .fields { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .field { display: flex; flex-direction: column; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    .field label { font-size: 13px; color: var(--muted); }
    .field input, .field select, .field textarea {
      min-height: 44px; border: 1px solid var(--line-12); border-radius: 6px;
      padding: 8px 12px; background: var(--white); color: var(--ink);
      transition: border-color .2s;
    }
    .field textarea { min-height: 96px; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus {
      border-color: var(--pine); outline: none;
    }
    .form-msg {
      margin-top: 14px; padding: 12px 14px; border-radius: 6px; font-size: 14px;
    }
    .form-msg.ok { background: #eef4f0; color: var(--pine-deep); }
    .form-msg.err { background: #f4ece4; color: var(--copper-deep); }
    .contact-aside {
      padding: 8px 8px 8px 4px;
    }
    .contact-aside h3 { font-size: 22px; margin-bottom: 12px; }
    .contact-aside p { color: var(--muted); margin-bottom: 16px; }
    .map-box {
      height: 160px; border-radius: 8px; margin-top: 18px;
      background:
        linear-gradient(180deg, rgba(243,240,232,0.2), rgba(20,22,19,0.18)),
        url("/assets/images/c2158b460722425d.webp") center/cover no-repeat;
      border: 1px solid var(--line);
      position: relative;
    }
    .map-pin {
      position: absolute; left: 18px; bottom: 14px;
      background: var(--paper); padding: 8px 12px; border-radius: 6px; font-size: 12px;
    }
    .site-footer {
      background: var(--dark); color: rgba(243,240,232,0.78); padding: 64px 0 28px;
      font-size: 14px;
    }
    .foot-grid {
      display: grid; grid-template-columns: 1.3fr 0.9fr 1fr 0.9fr; gap: 32px;
      padding-bottom: 40px; border-bottom: 1px solid var(--line-inv);
    }
    .site-footer h4 {
      color: var(--paper); font-size: 16px; margin-bottom: 14px; font-family: var(--serif);
    }
    .foot-brand .name {
      font-family: var(--serif); font-size: 22px; color: var(--paper); letter-spacing: 0.12em;
      margin-bottom: 12px;
    }
    .foot-nav a, .foot-list li { display: block; min-height: 36px; color: rgba(243,240,232,0.72); }
    .foot-nav a:hover { color: var(--copper); }
    .copy {
      display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
      padding-top: 18px; font-size: 12px; color: rgba(243,240,232,0.42);
    }
    .floatbar {
      position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
      background: var(--ink); color: var(--paper);
      transform: translateY(110%); transition: transform .4s var(--ease);
      border-top: 1px solid rgba(176,137,104,0.35);
    }
    .floatbar.show { transform: translateY(0); }
    .float-inner {
      display: flex; align-items: center; justify-content: space-between; gap: 16px;
      min-height: 64px;
    }
    .float-inner span { font-size: 14px; }
    .float-inner strong { color: var(--copper); font-weight: 600; }
    .float-actions { display: flex; gap: 10px; }
    .m-only { display: none; }
    @media (max-width: 1440px) {
      :root { --container: 1120px; }
    }
    @media (max-width: 1024px) {
      .section { padding: 88px 0; }
      .section-head.wide, .split, .split.rev, .scene-layout, .sol,
      .case-grid, .story-main, .consult-grid, .news-item {
        grid-template-columns: 1fr;
      }
      .nav { display: none; }
      .hamburger { display: inline-block; }
      .header-cta .btn { display: none; }
      .offer-grid { grid-template-columns: 1fr; }
      .offer:nth-child(2), .offer:nth-child(3) { margin-top: 0; }
      .ability-grid { grid-template-columns: 1fr 1fr; }
      .cover-row, .logo-wall, .stat-grid, .guarantee, .flow, .foot-grid {
        grid-template-columns: 1fr 1fr;
      }
      .sol { grid-template-columns: 1fr; }
      .sol .btn { justify-self: start; }
      .timeline, .loop { grid-template-columns: 1fr 1fr; }
      .case-mini { grid-template-columns: 160px 1fr; }
    }
    @media (max-width: 768px) {
      .container { width: min(100% - 28px, var(--container)); }
      .topbar-left span.hide-sm, .topbar .sep, .topbar-right .sep { display: none; }
      .hero { min-height: auto; }
      .hero-inner { padding: 48px 0 64px; }
      .search-row { grid-template-columns: 1fr; }
      .search-row .btn { min-height: 48px; width: 100%; }
      .ability-grid, .review-grid, .story-sub, .cover-row, .logo-wall, .stat-grid,
      .guarantee, .flow, .fields, .foot-grid, .timeline, .loop {
        grid-template-columns: 1fr;
      }
      .story-card, .news-item, .case-mini { grid-template-columns: 1fr; }
      .float-inner { display: none; }
      .floatbar .m-only {
        display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 10px 12px;
      }
      .floatbar .m-only .btn { width: 100%; }
      body { padding-bottom: 68px; }
      .copy { flex-direction: column; }
    }
    @media (max-width: 520px) {
      .hero h1 { font-size: 32px; }
      .section h2 { font-size: 26px; }
      .offer-num { font-size: 64px; }
      .hot-cats .chip { min-height: 40px; }
      .scene-tabs { flex-direction: row; overflow-x: auto; }
      .scene-tab { min-width: 70%; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after {
        animation: none !important; transition: none !important;
      }
      .hero-slide img { transform: none !important; }
      .floatbar, .drawer { transform: none; }
      .floatbar:not(.show) { display: none; }
      .drawer:not(.open) { display: none; }
    }