/* roulang page: index */
:root {
      --ink: #2B2926;
      --copper: #8E6A3C;
      --paper: #F3EFE8;
      --warm: #E7E1D6;
      --card: #FFFcf7;
      --line: #C9C1B5;
      --walnut: #4A3F35;
      --moss: #5E6F5A;
      --muted: #6B645C;
      --cream: #F7F3EC;
      --shadow: 0 8px 24px rgba(43, 41, 38, .06);
      --radius-img: 2px;
      --radius-card: 8px;
      --radius-btn: 3px;
      --max: 1240px;
      --pad: 24px;
      --ease: .22s ease;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font-family: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      font-size: 16px;
      line-height: 1.85;
      overflow-x: hidden;
    }
    img { max-width: 100%; display: block; height: auto; }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font-family: inherit; }
    button { cursor: pointer; }
    h1, h2, h3, h4 {
      font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
      font-weight: 700;
      line-height: 1.28;
      margin: 0 0 .7em;
      color: var(--ink);
    }
    p { margin: 0 0 .85em; }
    ul { margin: 0; padding: 0; list-style: none; }
    :focus-visible { outline: 2px solid var(--copper); outline-offset: 3px; }
    .container { width: min(100% - 40px, var(--max)); margin: 0 auto; }
    .skip {
      position: absolute; left: -999px; top: 8px;
    }
    .skip:focus { left: 8px; background: #fff; padding: 8px 12px; z-index: 80; }

    .topbar {
      background: var(--warm);
      color: var(--walnut);
      font-size: 13px;
      border-bottom: 1px solid var(--line);
      transition: transform .25s ease, opacity .25s ease;
    }
    .topbar-inner {
      display: flex; align-items: center; justify-content: space-between;
      min-height: 40px; gap: 16px; flex-wrap: wrap;
    }
    .topbar-meta { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; }
    .topbar a { color: var(--walnut); }
    .topbar a:hover { color: var(--copper); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 2px; }
    .tag-city {
      display: inline-flex; gap: 8px; color: var(--muted);
    }
    .tag-city span {
      border: 1px solid var(--line); padding: 1px 7px; border-radius: 2px; background: rgba(255,252,247,.45);
    }
    .top-cta {
      color: var(--copper) !important; font-weight: 600; min-height: 44px; display: inline-flex; align-items: center;
    }
    body.scrolled .topbar { transform: translateY(-100%); opacity: 0; pointer-events: none; position: absolute; width: 100%; }

    .site-header { position: sticky; top: 0; z-index: 40; }
    .nav-bar {
      background: var(--paper);
      border-bottom: 1px solid var(--line);
      min-height: 72px;
    }
    body.scrolled .nav-bar { box-shadow: var(--shadow); background: #FFFcf7; }
    .nav-inner {
      display: flex; align-items: center; justify-content: space-between; gap: 18px; min-height: 72px;
    }
    .logo {
      display: flex; align-items: center; gap: 10px; min-height: 44px; flex-shrink: 0;
    }
    .logo-mark {
      width: 34px; height: 34px; border: 1px solid var(--ink); display: grid; place-items: center;
    }
    .logo-mark svg { width: 20px; height: 20px; }
    .logo-text {
      font-family: "Noto Serif SC", serif; font-size: 18px; font-weight: 700; letter-spacing: .04em;
    }
    .nav-links { display: flex; align-items: center; gap: 4px 18px; flex-wrap: wrap; }
    .nav-links a {
      position: relative; font-size: 14px; color: var(--walnut); min-height: 44px; display: inline-flex; align-items: center;
    }
    .nav-links a:hover { color: var(--ink); }
    .nav-links a.active { color: var(--ink); }
    .nav-links a.active::after,
    .nav-links a:hover::after {
      content: ""; position: absolute; left: 0; bottom: 10px; width: 18px; height: 2px; background: var(--copper);
    }
    .btn {
      display: inline-flex; align-items: center; justify-content: center;
      min-height: 44px; padding: 0 18px; border-radius: var(--radius-btn);
      border: 1px solid var(--ink); font-size: 14px; font-weight: 500; transition: var(--ease); letter-spacing: .04em;
    }
    .btn-solid { background: var(--ink); color: #F3EFE8; }
    .btn-solid:hover, .btn-solid:active { background: var(--copper); border-color: var(--copper); color: #fff; }
    .btn-line { background: transparent; color: var(--ink); }
    .btn-line:hover { background: var(--warm); }
    .btn-light { background: transparent; color: #F3EFE8; border-color: #F3EFE8; }
    .btn-light:hover { background: var(--copper); border-color: var(--copper); }
    .nav-cta { flex-shrink: 0; }
    .hamburger {
      display: none; width: 44px; height: 44px; border: 1px solid var(--ink); background: transparent; border-radius: 2px;
      align-items: center; justify-content: center; flex-direction: column; gap: 5px;
    }
    .hamburger span { width: 16px; height: 1px; background: var(--ink); display: block; }
    .mobile-phone { display: none; }

    .hero { position: relative; min-height: 88vh; color: #F3EFE8; overflow: hidden; }
    .hero-track { position: absolute; inset: 0; }
    .hero-slide {
      position: absolute; inset: 6px 8px; opacity: 0; transition: opacity .7s ease;
      background: #1c1b19 center/cover no-repeat; border-radius: 2px;
    }
    .hero-slide.is-on { opacity: 1; }
    .hero-slide::after {
      content: ""; position: absolute; inset: 0;
      background: linear-gradient(90deg, rgba(43,41,38,.78) 0%, rgba(43,41,38,.42) 48%, rgba(43,41,38,.18) 100%);
    }
    .hero-copy {
      position: relative; z-index: 2; width: min(100% - 40px, var(--max)); margin: 0 auto;
      padding: 140px 0 96px; max-width: 760px;
    }
    .eyebrow {
      display: inline-block; font-size: 13px; letter-spacing: .18em; color: #E7E1D6; margin-bottom: 18px;
      border-left: 2px solid var(--copper); padding-left: 10px;
    }
    .hero h1 { font-size: clamp(28px, 4.6vw, 52px); color: #F3EFE8; margin-bottom: 18px; }
    .hero-lead { font-size: 16px; line-height: 1.9; color: #E7E1D6; max-width: 42em; margin-bottom: 28px; }
    .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
    .hero-ctrl { position: absolute; z-index: 3; bottom: 28px; right: 28px; display: flex; align-items: center; gap: 10px; }
    .hero-arrow {
      width: 44px; height: 44px; border: 1px solid rgba(243,239,232,.45); background: rgba(43,41,38,.35);
      color: #F3EFE8; border-radius: 2px;
    }
    .hero-arrow:hover { background: var(--copper); border-color: var(--copper); }
    .hero-dots { display: flex; gap: 8px; }
    .hero-dots button {
      width: 22px; height: 3px; padding: 0; border: 0; background: rgba(243,239,232,.35); min-height: 12px;
    }
    .hero-dots button.is-on { background: var(--copper); }

    main { display: block; }
    section { padding: 100px 0; position: relative; }
    .sec-paper { background: var(--paper); }
    .sec-warm { background: var(--warm); }
    .sec-head { margin-bottom: 36px; max-width: 760px; }
    .sec-head h2 { font-size: clamp(26px, 3vw, 34px); margin-bottom: 14px; }
    .sec-head p { color: var(--muted); margin: 0; }
    .kicker { font-size: 13px; color: var(--copper); letter-spacing: .12em; margin-bottom: 10px; display: block; }

    .split { display: grid; grid-template-columns: 1.15fr .95fr; gap: 48px; align-items: center; }
    .split-visual { position: relative; }
    .split-visual img { width: 100%; height: 520px; object-fit: cover; border-radius: var(--radius-img); }
    .split-caption {
      position: absolute; left: 16px; bottom: 16px; background: var(--card); padding: 10px 14px; font-size: 13px; border: 1px solid var(--line);
    }
    .fact {
      margin-top: 22px; padding: 16px 18px; border-left: 2px solid var(--copper); background: rgba(142,106,60,.08);
      font-size: 14px; color: var(--walnut);
    }
    .text-block p + p { margin-top: .2em; }

    .bento {
      display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 210px; gap: 18px;
    }
    .bento a {
      display: flex; flex-direction: column; justify-content: flex-end; position: relative; overflow: hidden;
      background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-card); min-height: 44px;
      color: #F3EFE8; padding: 18px; transition: transform var(--ease), border-color var(--ease);
    }
    .bento a:hover { transform: translateY(-3px); border-color: var(--copper); }
    .bento a img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
    .bento a::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(43,41,38,.05), rgba(43,41,38,.72)); }
    .bento a > * { position: relative; z-index: 1; }
    .bento .wide { grid-column: span 2; grid-row: span 2; }
    .bento h3 { font-size: 22px; color: #F3EFE8; margin: 0 0 8px; }
    .bento .wide h3 { font-size: 28px; }
    .delivers { font-size: 13px; color: #E7E1D6; line-height: 1.7; }
    .badge {
      display: inline-block; font-size: 12px; letter-spacing: .08em; border: 1px solid rgba(243,239,232,.4);
      padding: 2px 7px; margin-bottom: 8px; border-radius: 2px;
    }

    .adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .adv-card {
      background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-card); padding: 26px 24px;
      box-shadow: var(--shadow); transition: transform var(--ease), border-color var(--ease);
    }
    .adv-card:hover { transform: translateY(-2px); border-color: var(--copper); }
    .ico { width: 36px; height: 36px; margin-bottom: 14px; color: var(--copper); }
    .adv-card h3 { font-size: 20px; margin-bottom: 8px; }
    .adv-card p { font-size: 15px; color: var(--muted); margin: 0; }

    .plan-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 18px; }
    .plan-card {
      background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-card); overflow: hidden;
      display: flex; flex-direction: column; box-shadow: var(--shadow); transition: transform var(--ease);
    }
    .plan-card:hover { transform: translateY(-3px); }
    .plan-card img { width: 100%; height: 210px; object-fit: cover; }
    .plan-card.featured img { height: 280px; }
    .plan-body { padding: 20px 20px 22px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
    .meta { font-size: 13px; color: var(--muted); }
    .plan-card h3 { font-size: 22px; margin: 0; }
    .note { font-size: 12px; color: var(--copper); }
    .mini-list { font-size: 14px; color: var(--walnut); }
    .mini-list li { padding-left: 12px; position: relative; }
    .mini-list li::before { content: ""; width: 5px; height: 1px; background: var(--copper); position: absolute; left: 0; top: 12px; }

    .flow { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; position: relative; }
    .flow::before {
      content: ""; position: absolute; left: 0; right: 0; top: 23px; height: 1px; background: var(--line);
    }
    .flow-item { background: var(--card); border: 1px solid var(--line); padding: 18px 16px 20px; border-radius: var(--radius-card); position: relative; }
    .step-no { font-family: "Noto Serif SC", serif; color: var(--copper); font-size: 20px; display: block; margin-bottom: 8px; }
    .flow-item h3 { font-size: 18px; margin-bottom: 6px; }
    .flow-item p { font-size: 14px; color: var(--muted); margin: 0; }

    .idea {
      background: var(--ink); color: #E7E1D6; padding: 108px 0;
    }
    .idea-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
    .idea h2 { color: #F3EFE8; font-size: clamp(28px, 3.4vw, 40px); }
    .idea p { color: #D8D0C4; }
    .idea-principles { display: grid; gap: 16px; }
    .idea-principles article { border-top: 1px solid rgba(201,193,181,.28); padding-top: 14px; }
    .idea-principles h3 { color: #F3EFE8; font-size: 18px; margin-bottom: 6px; }
    .idea img { width: 100%; height: 420px; object-fit: cover; border-radius: 2px; }

    .case-wall {
      display: grid; grid-template-columns: repeat(12, 1fr); grid-auto-rows: 170px; gap: 14px;
    }
    .case-item {
      position: relative; overflow: hidden; border-radius: 4px; background: #1c1b19; color: #F3EFE8;
    }
    .case-item img { width: 100%; height: 100%; object-fit: cover; opacity: .92; }
    .case-item figcaption {
      position: absolute; left: 0; right: 0; bottom: 0; padding: 14px 14px 12px;
      background: linear-gradient(180deg, transparent, rgba(43,41,38,.82));
    }
    .case-item h3 { font-size: 18px; color: #F3EFE8; margin: 0 0 4px; }
    .case-item p { font-size: 13px; margin: 0; color: #E7E1D6; }
    .c1 { grid-column: span 5; grid-row: span 2; }
    .c2 { grid-column: span 4; grid-row: span 2; }
    .c3 { grid-column: span 3; grid-row: span 2; }
    .c4 { grid-column: span 3; grid-row: span 2; }
    .c5 { grid-column: span 5; grid-row: span 2; }
    .c6 { grid-column: span 4; grid-row: span 2; }
    .c7 { grid-column: span 7; grid-row: span 2; }
    .c8 { grid-column: span 5; grid-row: span 2; }

    .scene-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 22px; }
    .scene-tabs button {
      min-height: 44px; padding: 0 14px; border: 1px solid var(--line); background: transparent; color: var(--walnut); border-radius: 2px;
    }
    .scene-tabs button.is-on, .scene-tabs button:hover { background: var(--ink); color: #F3EFE8; border-color: var(--ink); }
    .scene-panel { display: none; grid-template-columns: 1.1fr 1fr; gap: 28px; align-items: stretch; }
    .scene-panel.is-on { display: grid; }
    .scene-panel img { width: 100%; height: 100%; min-height: 280px; object-fit: cover; border-radius: 2px; }
    .point-list { display: grid; gap: 12px; }
    .point-list li { background: var(--card); border: 1px solid var(--line); padding: 14px 16px; border-radius: 6px; }
    .point-list strong { display: block; font-family: "Noto Serif SC", serif; margin-bottom: 4px; }

    .mat-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 36px; align-items: start; }
    .mat-grid img { width: 100%; height: 420px; object-fit: cover; border-radius: 2px; }
    table.params {
      width: 100%; border-collapse: collapse; background: var(--card); font-size: 14px;
    }
    table.params th, table.params td {
      border: 1px solid var(--line); padding: 12px 14px; text-align: left; vertical-align: top;
    }
    table.params th { background: var(--warm); font-weight: 600; width: 28%; }
    .moss { color: var(--moss); font-size: 12px; letter-spacing: .08em; }

    .story-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .story {
      background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-card); overflow: hidden;
    }
    .story img { width: 100%; height: 180px; object-fit: cover; }
    .story-body { padding: 18px 18px 22px; }
    .story h3 { font-size: 18px; }
    .story p { font-size: 14px; color: var(--muted); margin: 0; }

    .stats {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
    }
    .stat {
      padding: 36px 18px; text-align: left; border-right: 1px solid var(--line);
    }
    .stat:last-child { border-right: 0; }
    .stat b { display: block; font-family: "Noto Serif SC", serif; font-size: 42px; color: var(--copper); line-height: 1.1; }
    .stat span { font-size: 13px; color: var(--muted); }

    .quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .quote {
      background: var(--cream); border: 1px solid var(--line); padding: 24px 22px; border-radius: 6px;
    }
    .quote p { font-size: 15px; margin-bottom: 16px; }
    .quote p::before { content: "「"; color: var(--copper); }
    .quote p::after { content: "」"; color: var(--copper); }
    .quote footer { font-size: 13px; color: var(--muted); }

    .news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
    .news-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-card); overflow: hidden; display: flex; flex-direction: column; }
    .news-card img { width: 100%; height: 150px; object-fit: cover; }
    .news-card div { padding: 16px; }
    .news-card time { font-size: 12px; color: var(--muted); }
    .news-card h3 { font-size: 17px; margin: 6px 0 8px; }
    .news-card p { font-size: 14px; color: var(--muted); margin: 0; }
    .more-link { display: inline-flex; min-height: 44px; align-items: center; color: var(--copper); font-weight: 600; }
    .more-link:hover { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 4px; }

    .partner-row { display: flex; flex-wrap: wrap; gap: 10px; }
    .partner {
      min-height: 44px; display: inline-flex; align-items: center; padding: 0 14px;
      border: 1px solid var(--line); color: var(--muted); background: rgba(255,252,247,.6); font-size: 13px; border-radius: 2px;
    }

    .faq-list { display: grid; gap: 8px; }
    .faq-item { border: 1px solid var(--line); background: var(--card); border-radius: 6px; }
    .faq-item button {
      width: 100%; text-align: left; background: transparent; border: 0; min-height: 56px; padding: 14px 48px 14px 18px;
      font-size: 16px; position: relative; color: var(--ink);
    }
    .faq-item button::after {
      content: "+"; position: absolute; right: 18px; top: 50%; transform: translateY(-50%); color: var(--copper); font-size: 20px;
    }
    .faq-item.open button::after { content: "−"; }
    .faq-item .ans { display: none; padding: 0 18px 16px; color: var(--muted); font-size: 15px; }
    .faq-item.open .ans { display: block; }

    .guarantee {
      margin-top: 48px; background: var(--ink); color: #E7E1D6; display: grid; grid-template-columns: repeat(4, 1fr);
    }
    .guarantee article { padding: 28px 22px; border-right: 1px solid rgba(201,193,181,.2); }
    .guarantee article:last-child { border-right: 0; }
    .guarantee h3 { color: #F3EFE8; font-size: 18px; }
    .guarantee p { margin: 0; font-size: 14px; }

    .contact-wrap { margin-top: 56px; display: grid; grid-template-columns: .85fr 1.15fr; gap: 36px; }
    .contact-side a { color: var(--copper); }
    .contact-side a:hover { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 3px; }
    form.lead {
      background: var(--card); border: 1px solid var(--line); padding: 24px; border-radius: 8px; display: grid; gap: 12px;
    }
    .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    label { display: block; font-size: 13px; margin-bottom: 6px; color: var(--walnut); }
    input, select, textarea {
      width: 100%; border: 1px solid var(--line); background: #FFFcf7; min-height: 44px; padding: 8px 10px; border-radius: 2px; color: var(--ink);
    }
    textarea { min-height: 96px; resize: vertical; }
    input:focus, select:focus, textarea:focus { border-color: var(--copper); outline: none; box-shadow: 0 0 0 2px rgba(142,106,60,.18); }
    .form-ok { display: none; padding: 12px 14px; background: rgba(94,111,90,.12); color: var(--moss); font-size: 14px; }
    .form-ok.show { display: block; }
    .form-err { display: none; color: #8a3b2b; font-size: 13px; }
    .form-err.show { display: block; }

    .site-footer {
      background: #221f1c; color: #D8D0C4; padding: 64px 0 28px; font-size: 14px;
    }
    .foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1.1fr 1fr; gap: 28px; margin-bottom: 36px; }
    .site-footer h3 { color: #F3EFE8; font-size: 16px; }
    .site-footer a { color: #D8D0C4; display: inline-flex; min-height: 32px; align-items: center; }
    .site-footer a:hover { color: #fff; text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 3px; }
    .copy { border-top: 1px solid rgba(201,193,181,.2); padding-top: 18px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13px; color: #A79E93; }

    .grid-deco {
      position: absolute; inset: 0; pointer-events: none; opacity: .18;
      background-image: linear-gradient(rgba(201,193,181,.5) 1px, transparent 1px), linear-gradient(90deg, rgba(201,193,181,.5) 1px, transparent 1px);
      background-size: 48px 48px; mask-image: linear-gradient(180deg, transparent, #000 12%, #000 88%, transparent);
    }

    @media (max-width: 1280px) {
      .hero h1 { font-size: 44px; }
    }
    @media (max-width: 1024px) {
      section { padding: 80px 0; }
      .split, .idea-grid, .mat-grid, .contact-wrap, .scene-panel.is-on { grid-template-columns: 1fr; }
      .bento { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 200px; }
      .bento .wide { grid-column: span 2; grid-row: span 1; min-height: 240px; }
      .adv-grid, .plan-grid, .story-row, .quote-grid { grid-template-columns: 1fr 1fr; }
      .flow { grid-template-columns: 1fr 1fr 1fr; }
      .flow::before { display: none; }
      .news-grid { grid-template-columns: 1fr 1fr; }
      .stats { grid-template-columns: 1fr 1fr; }
      .stat { border-bottom: 1px solid var(--line); }
      .guarantee { grid-template-columns: 1fr 1fr; }
      .foot-grid { grid-template-columns: 1fr 1fr; }
      .split-visual img, .idea img, .mat-grid img { height: 360px; }
      .nav-links { gap: 4px 12px; }
      .nav-links a { font-size: 13px; }
    }
    @media (max-width: 768px) {
      .topbar { display: none; }
      .hamburger { display: inline-flex; }
      .nav-cta { display: none; }
      .nav-links {
        position: fixed; inset: 72px 0 0 0; background: #FFFcf7; display: none; flex-direction: column;
        padding: 18px 24px 32px; gap: 0; z-index: 30; overflow: auto;
      }
      .nav-links a { width: 100%; border-bottom: 1px solid var(--line); font-size: 16px; }
      .header-open .nav-links { display: flex; }
      .mobile-phone { display: inline-flex; min-height: 44px; align-items: center; margin-top: 12px; color: var(--copper); font-weight: 600; }
      .hero { min-height: 78vh; }
      .hero-copy { padding: 96px 0 80px; }
      .hero h1 { font-size: 30px; }
      .hero-actions { flex-direction: column; align-items: stretch; }
      .hero-ctrl { right: 16px; bottom: 16px; }
      section { padding: 64px 0; }
      .adv-grid, .plan-grid, .story-row, .quote-grid, .news-grid, .flow, .bento { grid-template-columns: 1fr; }
      .bento .wide { grid-column: span 1; }
      .case-wall { grid-template-columns: 1fr; grid-auto-rows: 220px; }
      .c1,.c2,.c3,.c4,.c5,.c6,.c7,.c8 { grid-column: span 1; grid-row: span 1; }
      .stats, .guarantee, .form-row, .foot-grid { grid-template-columns: 1fr; }
      .stat, .guarantee article { border-right: 0; border-bottom: 1px solid rgba(201,193,181,.2); }
      .container { width: min(100% - 28px, var(--max)); }
    }
    @media (max-width: 480px) {
      .hero h1 { font-size: 28px; }
      .logo-text { font-size: 16px; }
      .sec-head h2 { font-size: 26px; }
      .stat b { font-size: 34px; }
    }

/* roulang page: index */
:root {
      --ink: #2B2926;
      --ink-deep: #1C1B19;
      --brass: #B08A5B;
      --brass-deep: #8C6A43;
      --brass-light: #C9A777;
      --stone: #6E7F74;
      --paper: #F4EFE6;
      --ash: #E7E1D6;
      --card: #fffbf6;
      --line: #D8D1C6;
      --muted: #6F6A63;
      --cream: #FBF8F2;
      --blueprint: rgba(110, 127, 116, 0.35);
      --radius-sm: 4px;
      --radius: 8px;
      --radius-card: 10px;
      --shadow: 0 8px 24px rgba(43, 41, 38, 0.06);
      --shadow-soft: 0 4px 14px rgba(43, 41, 38, 0.05);
      --container: 1240px;
      --gutter: 24px;
      --topbar-h: 36px;
      --nav-h: 64px;
      --serif: "Noto Serif SC", "Source Han Serif SC", "STSong", "Songti SC", "SimSun", serif;
      --sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --lead: 1.85;
      --gap-section: 112px;
    }
    *, *::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: var(--lead);
      color: var(--ink);
      background: var(--paper);
      letter-spacing: 0.01em;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; }
    button, input, textarea, select { font-family: inherit; }
    button { cursor: pointer; }
    h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.35; margin: 0 0 0.7em; letter-spacing: 0.02em; }
    p { margin: 0 0 1.15em; }
    p:last-child { margin-bottom: 0; }
    ul { margin: 0; padding: 0; list-style: none; }
    :focus-visible { outline: 2px solid var(--brass); outline-offset: 2px; }
    .skip {
      position: absolute; left: -999px; top: 8px;
    }
    .skip:focus { left: 8px; z-index: 80; background: var(--ink); color: var(--paper); padding: 8px 14px; }
    .container { width: min(100% - 40px, var(--container)); margin: 0 auto; }
    .swatch-bar {
      display: flex; height: 4px;
    }
    .swatch-bar span { flex: 1; }
    .swatch-bar span:nth-child(1) { background: #C4B7A6; }
    .swatch-bar span:nth-child(2) { background: var(--brass); }
    .swatch-bar span:nth-child(3) { background: var(--stone); }
    .swatch-bar span:nth-child(4) { background: #6B6258; }
    .topbar {
      background: var(--ash);
      color: var(--ink);
      font-size: 12px;
      height: var(--topbar-h);
      display: flex;
      align-items: center;
    }
    .topbar-inner {
      display: flex; align-items: center; justify-content: space-between; gap: 16px;
      width: min(100% - 40px, var(--container)); margin: 0 auto;
    }
    .topbar-meta { display: flex; gap: 18px; flex-wrap: wrap; color: var(--muted); }
    .topbar-meta a { color: var(--ink); }
    .topbar-meta a:hover { color: var(--brass-deep); }
    .topbar-cta {
      display: inline-flex; align-items: center; min-height: 28px; padding: 0 10px;
      border: 1px solid var(--brass); color: var(--brass-deep); border-radius: var(--radius-sm);
      letter-spacing: 0.08em;
    }
    .topbar-cta:hover { background: var(--brass); color: var(--cream); }
    .site-header {
      position: sticky; top: 0; z-index: 40; background: rgba(244, 239, 230, 0.96);
    }
    .site-header.is-stuck .navbar { border-bottom: 1px solid var(--line); }
    .navbar {
      height: var(--nav-h);
      display: flex; align-items: center;
      border-bottom: 1px solid transparent;
      transition: border-color 0.2s ease;
    }
    .navbar-inner {
      width: min(100% - 40px, var(--container)); margin: 0 auto;
      display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 24px;
    }
    .logo { display: flex; flex-direction: column; line-height: 1.15; min-height: 44px; justify-content: center; }
    .logo-sub { font-size: 11px; letter-spacing: 0.28em; color: var(--stone); }
    .logo-main { font-family: var(--serif); font-size: 20px; color: var(--ink); }
    .nav-links { display: flex; justify-content: center; gap: 4px 18px; flex-wrap: wrap; }
    .nav-links a {
      position: relative; font-size: 14px; color: var(--ink); padding: 10px 0; min-height: 44px; display: inline-flex; align-items: center;
    }
    .nav-links a::after {
      content: ""; position: absolute; left: 0; right: 0; bottom: 6px; height: 1px; background: var(--brass); transform: scaleX(0); transform-origin: left; transition: transform 0.2s ease;
    }
    .nav-links a:hover::after, .nav-links a.is-active::after { transform: scaleX(1); }
    .nav-toggle, .topbar-phone-mobile, .drawer-close { display: none; }
    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 0 18px; border-radius: var(--radius-sm);
      border: 1px solid transparent; font-size: 14px; letter-spacing: 0.06em;
      transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
    }
    .btn:hover { transform: translateY(-2px); }
    .btn:active { transform: translateY(0); }
    .btn-brass { background: var(--brass); color: var(--cream); }
    .btn-brass:hover { background: var(--brass-light); color: var(--ink-deep); }
    .btn-ink { background: var(--ink); color: var(--cream); }
    .btn-ink:hover { background: var(--ink-deep); }
    .btn-ghost { background: transparent; border-color: var(--stone); color: var(--cream); }
    .btn-ghost:hover { border-color: var(--brass); color: var(--brass-light); }
    .btn-ghost-ink { background: transparent; border-color: var(--stone); color: var(--ink); }
    .btn-ghost-ink:hover { border-color: var(--brass); color: var(--brass-deep); }
    main { overflow: hidden; }
    section { padding: var(--gap-section) 0; position: relative; }
    section[id] { scroll-margin-top: 92px; }
    .bg-paper { background: var(--paper); }
    .bg-ash { background: var(--ash); }
    .kicker {
      display: inline-flex; align-items: center; gap: 8px;
      font-size: 12px; letter-spacing: 0.18em; color: var(--brass-deep); margin-bottom: 12px;
    }
    .kicker::before { content: ""; width: 18px; height: 1px; background: var(--brass); }
    .section-head { max-width: 760px; margin-bottom: 48px; }
    .section-head h2 { font-size: clamp(1.5rem, 1.2vw + 1.2rem, 2.1rem); margin-bottom: 16px; }
    .section-head p { color: var(--muted); }
    .hero {
      padding: 0; min-height: calc(100svh - var(--topbar-h));
      background: var(--ink-deep); color: var(--cream);
      position: relative;
    }
    .hero-stage { position: relative; min-height: calc(100svh - var(--topbar-h) - 128px); }
    .hero-slide {
      position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity 0.6s ease;
    }
    .hero-slide.is-active { opacity: 1; visibility: visible; position: relative; }
    .hero-slide img {
      width: 100%; height: min(78vh, 760px); object-fit: cover; object-position: center;
    }
    .hero-dim {
      position: absolute; inset: 0;
      background:
        linear-gradient(90deg, rgba(28,27,25,0.72) 0%, rgba(28,27,25,0.28) 46%, rgba(28,27,25,0.55) 100%),
        linear-gradient(180deg, rgba(28,27,25,0.18) 0%, rgba(28,27,25,0.08) 40%, rgba(28,27,25,0.72) 100%);
      pointer-events: none;
    }
    .hero-copy {
      position: absolute; left: 0; right: 0; top: 0; bottom: 88px;
      display: flex; align-items: flex-end; padding: 48px 0 28px;
    }
    .hero-copy-inner { max-width: 720px; }
    .hero-brand { font-size: 13px; letter-spacing: 0.32em; color: var(--brass-light); margin-bottom: 14px; }
    .hero h1, .hero-heading {
      font-family: var(--serif); font-size: clamp(1.7rem, 2.4vw + 1rem, 2.7rem); font-weight: 600;
      margin: 0 0 16px; line-height: 1.3;
    }
    .hero-lead { font-size: 15px; line-height: 1.9; color: rgba(251,248,242,0.88); margin-bottom: 22px; max-width: 640px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-roadmap {
      background: var(--ink); border-top: 1px solid rgba(176,138,91,0.35);
      padding: 18px 0 20px;
    }
    .roadmap-top { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; margin-bottom: 14px; }
    .roadmap-title { font-family: var(--serif); font-size: 16px; color: var(--cream); }
    .roadmap-note { font-size: 12px; color: rgba(251,248,242,0.62); }
    .version-bar { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; }
    .version-node {
      border: 1px dashed rgba(176,138,91,0.45); padding: 10px 10px 12px; min-height: 74px;
      color: var(--cream); display: flex; flex-direction: column; gap: 4px;
    }
    .version-node:hover, .version-node:focus { border-style: solid; border-color: var(--brass); }
    .version-code { color: var(--brass-light); font-size: 11px; letter-spacing: 0.14em; }
    .version-name { font-size: 13px; }
    .version-time { font-size: 12px; color: rgba(251,248,242,0.55); }
    .hero-controls {
      position: absolute; right: max(20px, calc((100% - var(--container)) / 2));
      top: 28px; display: flex; gap: 8px; z-index: 3;
    }
    .hero-btn {
      width: 44px; height: 44px; border: 1px solid rgba(216,209,198,0.45); background: rgba(28,27,25,0.35);
      color: var(--cream); border-radius: var(--radius-sm);
    }
    .hero-btn:hover { border-color: var(--brass); color: var(--brass-light); }
    .hero-dots { display: flex; gap: 8px; margin-top: 16px; }
    .hero-dots button {
      width: 18px; height: 4px; border: 0; padding: 0; background: rgba(251,248,242,0.35); min-height: 4px;
    }
    .hero-dots button.is-active { background: var(--brass); }
    .split { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
    .split img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: var(--radius-card); box-shadow: var(--shadow-soft); }
    .fact-line {
      margin-top: 22px; padding: 16px 18px; border-left: 2px solid var(--brass); background: var(--card);
      font-size: 14px; color: var(--ink);
    }
    .check-bench { display: grid; grid-template-columns: 0.92fr 1.08fr; gap: 28px; }
    .panel {
      background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-card);
      box-shadow: var(--shadow-soft); padding: 28px;
    }
    .panel h3 { font-size: 22px; margin-bottom: 8px; }
    .check-list { display: grid; gap: 10px; margin-top: 18px; }
    .check-item {
      display: grid; grid-template-columns: 64px 1fr auto; gap: 12px; align-items: center;
      padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 14px;
    }
    .check-item:last-child { border-bottom: 0; }
    .tag {
      display: inline-flex; align-items: center; min-height: 24px; padding: 0 8px;
      border: 1px solid var(--stone); color: var(--stone); font-size: 11px; letter-spacing: 0.08em; border-radius: 2px;
    }
    .tag-brass { border-color: var(--brass); color: var(--brass-deep); }
    .preview-block {
      background: var(--ink-deep); color: var(--cream); padding: 28px; min-height: 100%;
      background-image:
        linear-gradient(rgba(176,138,91,0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(176,138,91,0.08) 1px, transparent 1px);
      background-size: 28px 28px;
    }
    .preview-block h3 { color: var(--cream); }
    .preview-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 18px; }
    .preview-card { border: 1px solid rgba(216,209,198,0.2); padding: 14px; font-size: 13px; }
    .preview-card strong { display: block; font-family: var(--serif); font-size: 16px; margin-bottom: 6px; }
    .badge-row { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
    .stamp {
      border: 1px solid var(--line); background: var(--card); min-height: 148px; padding: 18px 14px;
      display: flex; flex-direction: column; justify-content: space-between;
    }
    .stamp-code { font-family: var(--serif); color: var(--brass-deep); letter-spacing: 0.12em; font-size: 13px; }
    .stamp h3 { font-size: 16px; margin: 10px 0 8px; }
    .stamp p { font-size: 13px; color: var(--muted); }
    .service-matrix { display: grid; grid-template-columns: 1.35fr 1fr 1fr; grid-template-rows: auto auto; gap: 16px; }
    .service-card {
      background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-card); overflow: hidden;
      box-shadow: var(--shadow-soft); display: flex; flex-direction: column;
    }
    .service-card.large { grid-row: span 2; }
    .service-card img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
    .service-card.large img { aspect-ratio: 4 / 3; min-height: 280px; }
    .service-body { padding: 20px 20px 22px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
    .service-body h3 { font-size: 22px; margin: 0; }
    .deliver { font-size: 13px; color: var(--muted); }
    .method-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .method-card {
      background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-card);
      padding: 22px 20px 24px; min-height: 210px; box-shadow: var(--shadow-soft);
    }
    .method-card:hover { border-color: var(--brass); transform: translateY(-2px); transition: 0.2s ease; }
    .method-no { font-family: var(--serif); color: var(--brass); letter-spacing: 0.16em; font-size: 13px; }
    .method-card h3 { font-size: 20px; margin: 10px 0 12px; }
    .method-card p { font-size: 14px; color: var(--muted); }
    .space-row { display: grid; grid-template-columns: 1fr 1.15fr 1fr; gap: 16px; align-items: stretch; }
    .space-card { position: relative; overflow: hidden; border-radius: var(--radius-card); min-height: 360px; color: var(--cream); }
    .space-card:nth-child(2) { min-height: 430px; margin-top: -18px; }
    .space-card img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
    .space-card .shade {
      position: absolute; inset: 0;
      background: linear-gradient(180deg, rgba(28,27,25,0.08) 20%, rgba(28,27,25,0.78) 100%);
    }
    .space-copy { position: relative; z-index: 1; padding: 24px; height: 100%; display: flex; flex-direction: column; justify-content: flex-end; }
    .space-copy h3 { color: var(--cream); font-size: 24px; }
    .timeline { display: grid; grid-template-columns: repeat(6, 1fr); gap: 0; position: relative; }
    .timeline::before {
      content: ""; position: absolute; left: 0; right: 0; top: 18px; height: 1px; background: var(--brass);
    }
    .step { padding: 0 12px 0 0; }
    .step-index {
      width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--brass); background: var(--paper);
      display: flex; align-items: center; justify-content: center; color: var(--stone); font-size: 12px; position: relative; z-index: 1;
    }
    .step h3 { font-size: 17px; margin: 16px 0 8px; }
    .step p { font-size: 13px; color: var(--muted); }
    .dark-idea {
      background: var(--ink-deep); color: var(--cream); padding: 0;
    }
    .dark-idea .container { display: grid; grid-template-columns: 1fr 1fr; min-height: 520px; }
    .idea-copy { padding: 88px 56px 88px 0; display: flex; flex-direction: column; justify-content: center; }
    .idea-copy h2 { font-size: clamp(1.6rem, 1.6vw + 1.1rem, 2.3rem); color: var(--cream); }
    .idea-list { margin-top: 28px; display: grid; gap: 14px; }
    .idea-list li { padding-left: 18px; border-left: 1px solid var(--brass); font-size: 15px; color: rgba(251,248,242,0.86); }
    .idea-visual { position: relative; min-height: 420px; }
    .idea-visual img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
    .case-wall {
      display: grid; grid-template-columns: 1.3fr 0.9fr 1fr; grid-auto-rows: 210px; gap: 12px;
    }
    .case-item { position: relative; overflow: hidden; cursor: pointer; border: 0; padding: 0; background: var(--ink); }
    .case-item:nth-child(1) { grid-row: span 2; }
    .case-item:nth-child(4) { grid-column: span 2; }
    .case-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
    .case-item:hover img { transform: scale(1.04); }
    .case-cap {
      position: absolute; left: 0; right: 0; bottom: 0; padding: 16px 18px;
      background: linear-gradient(180deg, transparent, rgba(28,27,25,0.82));
      color: var(--cream); opacity: 0; transform: translateY(8px); transition: 0.2s ease; text-align: left;
    }
    .case-item:hover .case-cap, .case-item:focus .case-cap { opacity: 1; transform: none; }
    .case-cap small { display: block; color: var(--brass-light); letter-spacing: 0.12em; font-size: 11px; margin-bottom: 4px; }
    .stories { display: grid; gap: 28px; }
    .story {
      display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 32px; align-items: center;
      background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-card); overflow: hidden;
    }
    .story:nth-child(2) { grid-template-columns: 1.1fr 0.9fr; }
    .story:nth-child(2) img { order: 2; }
    .story img { width: 100%; height: 100%; min-height: 280px; object-fit: cover; }
    .story-copy { padding: 32px 32px 32px 8px; }
    .story:nth-child(2) .story-copy { padding: 32px; }
    .data-bar {
      background: var(--ink); color: var(--cream); padding: 64px 0; border-top: 1px solid rgba(176,138,91,0.35); border-bottom: 1px solid rgba(176,138,91,0.35);
    }
    .data-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; }
    .data-item { padding: 8px 10px; border-right: 1px solid rgba(216,209,198,0.14); }
    .data-item:last-child { border-right: 0; }
    .data-num { font-family: var(--serif); font-size: 40px; color: var(--brass-light); line-height: 1.1; }
    .data-unit { font-size: 13px; color: var(--brass-light); margin-left: 4px; }
    .data-label { font-size: 13px; color: rgba(251,248,242,0.7); margin-top: 8px; }
    .review-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr 1fr; gap: 14px; }
    .review {
      background: var(--card); border: 1px solid var(--line); padding: 24px 22px; min-height: 240px;
      display: flex; flex-direction: column; justify-content: space-between;
    }
    .review:first-child { background: var(--ink-deep); color: var(--cream); border-color: var(--ink-deep); }
    .review q { font-family: var(--serif); font-size: 16px; quotes: "「" "」"; line-height: 1.8; }
    .review footer { margin-top: 18px; font-size: 12px; color: var(--stone); letter-spacing: 0.04em; }
    .review:first-child footer { color: var(--brass-light); }
    .scene-index { display: grid; gap: 0; border-top: 1px solid var(--line); }
    .scene-row {
      display: grid; grid-template-columns: 160px 1fr auto; gap: 20px; align-items: center;
      padding: 22px 0; border-bottom: 1px solid var(--line);
    }
    .scene-row h3 { margin: 0; font-size: 20px; }
    .scene-row p { margin: 0; color: var(--muted); font-size: 14px; }
    .material-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
    .material {
      background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-card); overflow: hidden;
    }
    .material-chip { height: 10px; display: flex; }
    .material-chip i { flex: 1; display: block; }
    .material-body { padding: 20px; }
    .material h3 { font-size: 20px; }
    .material p { font-size: 14px; color: var(--muted); }
    .news-list { display: grid; gap: 14px; }
    .news-card {
      display: grid; grid-template-columns: 180px 1fr auto; gap: 22px; align-items: center;
      background: var(--card); border: 1px solid var(--line); padding: 16px 18px; border-radius: var(--radius);
    }
    .news-card img { width: 180px; height: 112px; object-fit: cover; }
    .news-card h3 { font-size: 18px; margin-bottom: 6px; }
    .news-card p { font-size: 14px; color: var(--muted); }
    .news-date { font-size: 12px; color: var(--brass-deep); letter-spacing: 0.08em; }
    .partner-row { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
    .partner {
      min-height: 92px; border: 1px solid var(--line); color: var(--muted);
      display: flex; align-items: center; justify-content: center; text-align: center; padding: 12px;
      filter: grayscale(1); font-size: 14px; background: var(--card);
    }
    .partner:hover { filter: none; color: var(--ink); border-color: var(--brass); }
    .faq-list { display: grid; gap: 10px; }
    .faq-item { background: var(--card); border: 1px solid var(--line); }
    .faq-q {
      width: 100%; background: transparent; border: 0; text-align: left; padding: 16px 18px; min-height: 56px;
      display: flex; justify-content: space-between; gap: 16px; align-items: center; color: var(--ink); font-size: 16px;
    }
    .faq-q span { font-family: var(--serif); color: var(--brass); margin-right: 10px; }
    .faq-a { display: none; padding: 0 18px 18px; background: var(--ash); color: var(--ink); font-size: 14px; line-height: 1.85; }
    .faq-item.is-open .faq-a { display: block; }
    .promise { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
    .promise-item { padding: 28px 22px; border-right: 1px solid var(--line); }
    .promise-item:last-child { border-right: 0; }
    .geo {
      width: 36px; height: 36px; border: 1px solid var(--stone); margin-bottom: 14px; position: relative;
    }
    .geo::before, .geo::after { content: ""; position: absolute; background: var(--brass); }
    .geo.g1::before { left: 50%; top: 6px; bottom: 6px; width: 1px; }
    .geo.g1::after { top: 50%; left: 6px; right: 6px; height: 1px; }
    .geo.g2 { border-radius: 0; }
    .geo.g2::before { left: 8px; right: 8px; top: 10px; height: 1px; box-shadow: 0 8px 0 var(--brass), 0 16px 0 var(--brass); background: var(--brass); }
    .geo.g3::before { width: 12px; height: 12px; border: 1px solid var(--brass); left: 11px; top: 11px; background: transparent; }
    .geo.g4::before { width: 16px; height: 20px; border: 1px solid var(--brass); left: 9px; top: 7px; background: transparent; }
    .contact-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 28px; }
    .form { background: var(--card); border: 1px solid var(--line); padding: 28px; border-radius: var(--radius-card); }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 16px; }
    .field { display: flex; flex-direction: column; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    label { font-size: 13px; color: var(--ink); }
    input, textarea {
      width: 100%; min-height: 44px; border: 1px solid var(--line); background: var(--cream);
      padding: 10px 12px; color: var(--ink); border-radius: var(--radius-sm);
    }
    textarea { min-height: 110px; resize: vertical; }
    input:focus, textarea:focus { border-color: var(--brass); outline: none; }
    .chips { display: flex; flex-wrap: wrap; gap: 8px; }
    .chip {
      min-height: 40px; padding: 0 12px; border: 1px solid var(--line); background: var(--cream); color: var(--ink); border-radius: 2px; font-size: 13px;
    }
    .chip.is-on { border-color: var(--brass); color: var(--brass-deep); background: #f4ead8; }
    .form-note { font-size: 12px; color: var(--muted); margin: 8px 0 14px; }
    .form-success { padding: 28px; background: var(--ash); border: 1px solid var(--brass); }
    .info-side { display: grid; gap: 16px; }
    .map-box {
      min-height: 220px; border: 1px solid var(--line); position: relative; overflow: hidden;
      background: #d9d2c6;
    }
    .map-box img { width: 100%; height: 220px; object-fit: cover; filter: grayscale(0.35) contrast(0.95); }
    .map-pin {
      position: absolute; left: 18px; bottom: 18px; background: var(--ink); color: var(--cream);
      padding: 10px 12px; font-size: 12px; max-width: 80%;
    }
    .site-footer { background: var(--ink-deep); color: rgba(251,248,242,0.78); padding: 56px 0 28px; }
    .footer-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 32px; margin-bottom: 36px; }
    .footer-brand { font-family: var(--serif); font-size: 22px; color: var(--cream); margin-bottom: 10px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 10px 16px; }
    .footer-links a:hover { color: var(--brass-light); }
    .footer-bottom { border-top: 1px solid rgba(216,209,198,0.16); padding-top: 16px; font-size: 12px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
    .footer-bottom a { color: rgba(251,248,242,0.78); }
    .drawer {
      position: fixed; inset: 0 0 0 auto; width: min(420px, 100%); background: var(--paper);
      z-index: 60; transform: translateX(100%); transition: transform 0.25s ease; overflow: auto;
      box-shadow: var(--shadow);
    }
    .drawer.is-open { transform: none; }
    .drawer-mask {
      position: fixed; inset: 0; background: rgba(28,27,25,0.42); z-index: 55; opacity: 0; pointer-events: none; transition: opacity 0.2s ease;
    }
    .drawer-mask.is-open { opacity: 1; pointer-events: auto; }
    .drawer-inner { padding: 28px 24px 40px; }
    .nav-drawer {
      position: fixed; inset: 0; background: var(--paper); z-index: 70; transform: translateX(100%);
      transition: transform 0.25s ease; padding: 24px; overflow: auto;
    }
    .nav-drawer.is-open { transform: none; }
    .nav-drawer a { display: flex; align-items: center; min-height: 48px; border-bottom: 1px solid var(--line); font-size: 16px; }
    body.menu-lock { overflow: hidden; }
    @media (max-width: 1440px) {
      :root { --container: 1180px; }
    }
    @media (max-width: 1024px) {
      :root { --gap-section: 88px; }
      .navbar-inner { grid-template-columns: auto auto; }
      .nav-links, .nav-cta-desk { display: none; }
      .nav-toggle {
        display: inline-flex; width: 44px; height: 44px; border: 1px solid var(--line); background: transparent;
        align-items: center; justify-content: center; flex-direction: column; gap: 5px;
      }
      .nav-toggle span { width: 18px; height: 1px; background: var(--ink); display: block; }
      .split, .check-bench, .dark-idea .container, .contact-grid, .story, .story:nth-child(2) { grid-template-columns: 1fr; }
      .story:nth-child(2) img { order: 0; }
      .service-matrix { grid-template-columns: 1fr 1fr; }
      .service-card.large { grid-row: auto; }
      .badge-row, .method-grid, .partner-row { grid-template-columns: repeat(3, 1fr); }
      .space-row, .review-grid, .promise { grid-template-columns: 1fr 1fr; }
      .space-card:nth-child(2) { margin-top: 0; min-height: 360px; }
      .data-grid { grid-template-columns: repeat(3, 1fr); }
      .version-bar { grid-template-columns: repeat(3, 1fr); }
      .case-wall { grid-template-columns: 1fr 1fr; grid-auto-rows: 200px; }
      .case-item:nth-child(1), .case-item:nth-child(4) { grid-column: auto; grid-row: auto; }
      .news-card { grid-template-columns: 140px 1fr; }
      .scene-row { grid-template-columns: 1fr; }
      .idea-copy { padding: 56px 0 24px; }
      .timeline { grid-template-columns: 1fr 1fr 1fr; gap: 18px; }
      .timeline::before { display: none; }
    }
    @media (max-width: 768px) {
      :root { --gap-section: 64px; }
      .topbar-meta span, .topbar-cta { display: none; }
      .topbar-phone-mobile { display: inline-flex; min-height: 32px; align-items: center; }
      .hero-slide img { height: 68vh; }
      .hero-copy { padding: 24px 0 16px; }
      .method-grid, .badge-row, .material-grid, .partner-row, .promise, .review-grid, .service-matrix, .space-row, .data-grid, .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .form-grid { grid-template-columns: 1fr; }
      .btn.full-m, .form .btn { width: 100%; }
    }
    @media (max-width: 520px) {
      :root { --gap-section: 52px; }
      .container { width: min(100% - 28px, var(--container)); }
      .method-grid, .badge-row, .material-grid, .partner-row, .promise, .review-grid, .service-matrix, .space-row, .data-grid, .footer-grid, .timeline, .version-bar, .preview-grid, .case-wall {
        grid-template-columns: 1fr;
      }
      .news-card { grid-template-columns: 1fr; }
      .news-card img { width: 100%; height: 180px; }
      .space-card, .space-card:nth-child(2) { min-height: 300px; }
      .hero-actions { flex-direction: column; }
      .hero-actions .btn { width: 100%; }
      .roadmap-top { flex-direction: column; align-items: flex-start; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      * { transition: none !important; animation: none !important; }
    }