/* roulang page: index */
:root {
      --ink: #161412;
      --seal: #A33B32;
      --seal-deep: #8A2F28;
      --paper: #F6F1E8;
      --card: #FFFbf5;
      --dark: #1C1917;
      --line: rgba(22, 20, 18, .12);
      --line-strong: rgba(22, 20, 18, .22);
      --stone: #5E6764;
      --paper-ink: #EDE6D8;
      --cream: #E8DFD0;
      --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
      --sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;
      --max: 1240px;
      --radius: 4px;
      --header-top: 36px;
      --header-main: 72px;
      --shadow: 0 1px 0 rgba(22, 20, 18, .06);
      --z-header: 80;
      --z-overlay: 120;
      --z-drawer: 140;
      --space: 112px;
      --ease: 180ms ease;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    html, body { margin: 0; padding: 0; }
    body {
      font-family: var(--sans);
      font-size: 17px;
      line-height: 1.8;
      color: var(--ink);
      background: var(--paper);
      -webkit-font-smoothing: antialiased;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; }
    a:hover { color: var(--seal); }
    button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }
    button { cursor: pointer; border: 0; background: none; }
    h1, h2, h3, h4 { font-family: var(--serif); font-weight: 600; letter-spacing: -.02em; line-height: 1.2; margin: 0 0 .6em; }
    p { margin: 0 0 1em; }
    ul, ol { margin: 0; padding: 0; list-style: none; }
    :focus-visible {
      outline: 2px solid var(--seal);
      outline-offset: 3px;
    }
    .skip {
      position: absolute; left: -999px; top: 8px;
    }
    .skip:focus { left: 8px; z-index: 200; background: var(--card); padding: 8px 12px; }
    .container {
      width: 100%;
      max-width: var(--max);
      margin: 0 auto;
      padding: 0 32px;
    }
    .section {
      padding: var(--space) 0;
      position: relative;
    }
    .section--alt { background: #F1EADF; }
    .section--card { background: var(--card); }
    .kicker {
      display: flex; align-items: baseline; gap: 14px;
      margin-bottom: 18px;
      color: var(--seal);
      font-family: var(--serif);
      font-size: 13px;
      letter-spacing: .18em;
    }
    .kicker-num {
      font-size: 42px;
      line-height: 1;
      letter-spacing: 0;
      color: var(--ink);
      opacity: .18;
    }
    .section-head {
      display: grid;
      grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
      gap: 32px 48px;
      align-items: end;
      margin-bottom: 48px;
    }
    .section-head h2 {
      font-size: clamp(28px, 3vw, 38px);
      margin: 0;
    }
    .section-lead {
      color: var(--stone);
      font-size: 16px;
      line-height: 1.85;
      margin: 0;
      max-width: 42em;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      padding: 0 22px;
      border-radius: var(--radius);
      font-size: 15px;
      letter-spacing: .04em;
      transition: background var(--ease), color var(--ease), box-shadow var(--ease), transform var(--ease);
      position: relative;
    }
    .btn-primary {
      background: var(--ink);
      color: var(--paper);
    }
    .btn-primary:hover {
      background: #0c0b0a;
      color: var(--paper);
      box-shadow: inset 0 -2px 0 var(--seal);
    }
    .btn-seal {
      background: var(--seal);
      color: var(--paper);
    }
    .btn-seal:hover {
      background: var(--seal-deep);
      color: var(--paper);
      box-shadow: inset 0 -2px 0 var(--ink);
    }
    .btn-ghost {
      border: 1px solid var(--ink);
      background: transparent;
      color: var(--ink);
    }
    .btn-ghost:hover {
      border-color: var(--seal);
      color: var(--seal);
    }
    .btn:active { transform: translateY(1px); }
    .tag {
      display: inline-flex;
      align-items: center;
      min-height: 32px;
      padding: 0 10px;
      border: 1px solid var(--line-strong);
      border-radius: 2px;
      font-size: 13px;
      color: var(--stone);
      background: var(--card);
    }
    .site-header { position: relative; z-index: var(--z-header); }
    .header-top {
      height: var(--header-top);
      background: var(--ink);
      color: var(--paper-ink);
      font-size: 12px;
      letter-spacing: .04em;
    }
    .header-top-inner {
      height: 100%;
      display: flex;
      align-items: center;
      gap: 22px;
    }
    .header-top a { color: var(--paper-ink); }
    .header-top a:hover { color: #fff; }
    .header-top span { color: rgba(237, 230, 216, .7); margin-left: auto; }
    .header-main {
      position: sticky;
      top: 0;
      z-index: var(--z-header);
      height: var(--header-main);
      background: rgba(246, 241, 232, .94);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--line);
    }
    .header-main-inner {
      height: 100%;
      display: flex;
      align-items: center;
      gap: 24px;
    }
    .logo {
      font-family: var(--serif);
      font-size: 20px;
      font-weight: 700;
      letter-spacing: .12em;
      color: var(--ink);
      white-space: nowrap;
    }
    .logo em {
      font-style: normal;
      color: var(--seal);
      padding: 0 4px;
    }
    .nav-desktop {
      display: flex;
      align-items: center;
      gap: 4px;
      margin-left: auto;
    }
    .nav-desktop a {
      position: relative;
      padding: 8px 10px;
      font-size: 14px;
      color: var(--ink);
    }
    .nav-desktop a::after {
      content: "";
      position: absolute;
      left: 10px; right: 10px; bottom: 4px;
      height: 1px;
      background: var(--seal);
      transform: scaleX(0);
      transform-origin: left;
      transition: transform 160ms ease;
    }
    .nav-desktop a:hover::after,
    .nav-desktop a.is-active::after { transform: scaleX(1); }
    .header-cta { margin-left: 8px; white-space: nowrap; }
    .nav-toggle {
      display: none;
      width: 44px; height: 44px;
      margin-left: auto;
      position: relative;
    }
    .nav-toggle span,
    .nav-toggle span::before,
    .nav-toggle span::after {
      position: absolute;
      left: 12px; right: 12px;
      height: 1.5px;
      background: var(--ink);
      transition: transform var(--ease), opacity var(--ease);
    }
    .nav-toggle span { top: 21px; }
    .nav-toggle span::before { content: ""; top: -7px; }
    .nav-toggle span::after { content: ""; top: 7px; }
    .nav-overlay {
      position: fixed; inset: 0;
      background: rgba(22, 20, 18, .35);
      opacity: 0; pointer-events: none;
      transition: opacity 200ms ease;
      z-index: var(--z-overlay);
    }
    .nav-overlay.is-open { opacity: 1; pointer-events: auto; }
    .nav-drawer {
      position: fixed; top: 0; right: 0; bottom: 0;
      width: min(360px, 86vw);
      background: var(--card);
      border-left: 1px solid var(--line);
      transform: translateX(100%);
      transition: transform 240ms ease;
      z-index: var(--z-drawer);
      padding: 28px 22px 40px;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .nav-drawer.is-open { transform: translateX(0); }
    .drawer-close {
      align-self: flex-end;
      width: 44px; height: 44px;
      font-size: 22px;
    }
    .nav-drawer a {
      min-height: 44px;
      display: flex;
      align-items: center;
      padding: 0 8px;
      border-bottom: 1px solid var(--line);
      font-family: var(--serif);
      font-size: 18px;
    }
    .nav-drawer .btn { margin-top: 18px; width: 100%; }
    .hero {
      position: relative;
      background: var(--cream);
      border-bottom: 1px solid var(--line);
    }
    .hero-viewport {
      position: relative;
      min-height: 420px;
      height: 52vh;
      max-height: 560px;
      overflow: hidden;
    }
    .hero-slide {
      position: absolute; inset: 0;
      opacity: 0;
      transform: translateX(24px);
      transition: opacity 500ms ease, transform 500ms ease;
      pointer-events: none;
    }
    .hero-slide.is-active {
      opacity: 1;
      transform: translateX(0);
      pointer-events: auto;
      z-index: 1;
    }
    .hero-bg {
      position: absolute; inset: 0;
      background-size: cover;
      background-position: center;
      filter: saturate(.85) contrast(1.02);
    }
    .hero-bg::after {
      content: "";
      position: absolute; inset: 0;
      background: linear-gradient(90deg, rgba(246,241,232,.55) 0%, rgba(246,241,232,.12) 46%, rgba(22,20,18,.18) 100%);
    }
    .hero-panel {
      position: relative;
      z-index: 2;
      width: min(560px, 92%);
      margin: 48px 0;
      padding: 32px 34px 28px;
      background: rgba(255, 251, 245, .92);
      border: 1px solid var(--line-strong);
    }
    .hero-panel h1,
    .hero-title {
      font-family: var(--serif);
      font-size: clamp(34px, 5vw, 58px);
      line-height: 1.15;
      letter-spacing: -.03em;
      margin: 0 0 16px;
    }
    .hero-panel p {
      font-size: 16px;
      line-height: 1.85;
      color: var(--stone);
      margin-bottom: 22px;
    }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-controls {
      position: absolute;
      right: 32px; bottom: 88px;
      z-index: 3;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .hero-arrow {
      width: 40px; height: 40px;
      border: 1px solid rgba(22,20,18,.35);
      color: var(--ink);
      background: rgba(255,251,245,.7);
      border-radius: 2px;
    }
    .hero-arrow:hover { border-color: var(--seal); color: var(--seal); }
    .hero-dots { display: flex; gap: 6px; margin-left: 8px; }
    .hero-dots button {
      width: 18px; height: 2px;
      background: rgba(22,20,18,.28);
      border-radius: 0;
      min-height: 12px;
      padding: 8px 0;
      background-clip: content-box;
    }
    .hero-dots button.is-active {
      width: 36px;
      background: var(--seal);
      background-clip: content-box;
    }
    .subject-rail {
      border-top: 1px solid var(--line);
      background: var(--paper);
    }
    .subject-rail-inner {
      display: flex;
      gap: 0;
      overflow-x: auto;
      scrollbar-width: none;
    }
    .subject-rail-inner::-webkit-scrollbar { display: none; }
    .subject-rail a {
      flex: 0 0 auto;
      min-height: 56px;
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 0 22px;
      border-right: 1px solid var(--line);
      font-size: 14px;
      white-space: nowrap;
    }
    .subject-rail a b {
      font-family: var(--serif);
      font-weight: 600;
      color: var(--seal);
    }
    .split {
      display: grid;
      grid-template-columns: 5fr 7fr;
      gap: 48px;
      align-items: center;
    }
    .split-media {
      border: 1px solid var(--line-strong);
      overflow: hidden;
      background: var(--cream);
    }
    .split-media img { width: 100%; height: 100%; object-fit: cover; min-height: 360px; }
    .fact-row {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px 18px;
      margin-top: 24px;
    }
    .fact {
      border-top: 1px solid var(--line-strong);
      padding-top: 10px;
    }
    .fact b {
      display: block;
      font-family: var(--serif);
      font-size: 22px;
      font-weight: 600;
    }
    .fact span { color: var(--stone); font-size: 13px; }
    .matrix {
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 18px 28px;
    }
    .matrix-item {
      display: grid;
      grid-template-columns: 72px 1fr;
      gap: 8px 16px;
      padding: 22px 8px 22px 0;
      border-top: 1px solid var(--line);
    }
    .matrix-item:nth-child(1) {
      grid-row: span 2;
      padding: 8px 24px 24px 0;
      border-right: 1px solid var(--line);
    }
    .matrix-item:nth-child(1) .matrix-body { font-size: 16px; }
    .matrix-no {
      font-family: var(--serif);
      font-size: 34px;
      line-height: 1;
      color: var(--ink);
      opacity: .28;
    }
    .matrix-item h3 { font-size: 22px; margin: 0 0 8px; }
    .matrix-body { color: var(--stone); font-size: 15px; margin: 0; }
    .adv-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }
    .adv-card {
      background: var(--card);
      border: 1px solid var(--line-strong);
      padding: 26px 24px 22px;
      min-height: 210px;
      transition: transform 160ms ease, border-color 160ms ease;
    }
    .adv-card:hover { transform: translateY(-3px); border-color: var(--seal); }
    .adv-card .ico {
      width: 28px; height: 28px;
      margin-bottom: 16px;
      color: var(--ink);
    }
    .adv-card h3 { font-size: 20px; }
    .adv-card p { color: var(--stone); font-size: 15px; margin: 0; }
    .magazine {
      display: grid;
      grid-template-columns: 1.4fr .9fr;
      grid-template-rows: 1fr 1fr;
      gap: 16px;
    }
    .prog {
      position: relative;
      background: var(--card);
      border: 1px solid var(--line-strong);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      min-height: 220px;
      transition: border-color 160ms ease, transform 160ms ease;
    }
    .prog:hover { border-color: var(--seal); transform: translateY(-3px); }
    .prog--lg { grid-row: 1 / 3; min-height: 520px; }
    .prog img { width: 100%; height: 180px; object-fit: cover; }
    .prog--lg img { height: 280px; }
    .prog-body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
    .prog-body h3 { font-size: 22px; }
    .prog-meta { color: var(--stone); font-size: 14px; margin-bottom: 14px; }
    .prog-body .btn { align-self: flex-start; margin-top: auto; }
    .timeline {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 0;
      position: relative;
    }
    .timeline::before {
      content: "";
      position: absolute;
      top: 18px; left: 6%; right: 6%;
      height: 1px;
      background: var(--line-strong);
    }
    .step { padding: 0 14px 0 0; position: relative; }
    .step-no {
      width: 36px; height: 36px;
      border: 1px solid var(--ink);
      background: var(--paper);
      display: flex; align-items: center; justify-content: center;
      font-family: var(--serif);
      margin-bottom: 16px;
      position: relative;
      z-index: 1;
    }
    .step h3 { font-size: 18px; }
    .step p { color: var(--stone); font-size: 14px; margin: 0; }
    .metrics {
      background: var(--ink);
      color: var(--paper);
      padding: 36px 0;
    }
    .metrics-inner {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 12px 24px;
    }
    .metric { padding: 8px 12px; border-left: 1px solid rgba(237,230,216,.18); }
    .metric b {
      display: block;
      font-family: var(--serif);
      font-size: clamp(32px, 4vw, 48px);
      line-height: 1.1;
      font-weight: 600;
    }
    .metric span { color: var(--paper-ink); font-size: 14px; }
    .credo {
      position: relative;
      color: var(--paper);
      min-height: 360px;
      display: flex;
      align-items: center;
      overflow: hidden;
    }
    .credo-bg {
      position: absolute; inset: 0;
      background-size: cover;
      background-position: center;
      filter: grayscale(.35) contrast(1.05);
    }
    .credo-bg::after {
      content: "";
      position: absolute; inset: 0;
      background: rgba(28, 25, 23, .82);
    }
    .credo-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: center; }
    .credo blockquote {
      margin: 0;
      font-family: var(--serif);
      font-size: clamp(28px, 4vw, 44px);
      line-height: 1.35;
      font-weight: 600;
    }
    .credo p { color: var(--paper-ink); max-width: 40em; margin: 18px 0 0; }
    .seal-badge {
      width: 120px; height: 120px;
      border: 2px solid var(--seal);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      color: var(--seal);
      transform: rotate(-12deg);
      font-family: var(--serif);
      letter-spacing: .2em;
      font-size: 18px;
    }
    .seal-badge small { letter-spacing: .12em; font-size: 11px; margin-top: 4px; }
    .cases-wall {
      display: grid;
      grid-template-columns: 1.3fr 1.3fr 1fr;
      grid-template-rows: repeat(4, minmax(120px, auto));
      gap: 14px;
    }
    .case {
      background: var(--card);
      border: 1px solid var(--line-strong);
      padding: 0;
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .case:nth-child(1) { grid-column: 1 / 3; grid-row: 1 / 3; }
    .case:nth-child(2) { grid-column: 1 / 3; grid-row: 3 / 5; }
    .case:nth-child(3) { grid-column: 3; grid-row: 1; }
    .case:nth-child(4) { grid-column: 3; grid-row: 2; }
    .case:nth-child(5) { grid-column: 3; grid-row: 3; }
    .case:nth-child(6) { grid-column: 3; grid-row: 4; }
    .case img { width: 100%; height: 180px; object-fit: cover; }
    .case:nth-child(1) img, .case:nth-child(2) img { height: 220px; }
    .case:nth-child(n+3) img { display: none; }
    .case-body { padding: 18px 20px 16px; }
    .case h3 { font-size: 20px; }
    .case p, .case-body p { color: var(--stone); font-size: 14px; margin: 0 0 8px; }
    .case details { margin-top: 6px; }
    .case summary {
      cursor: pointer;
      color: var(--seal);
      font-size: 14px;
      list-style: none;
      min-height: 32px;
    }
    .case summary::-webkit-details-marker { display: none; }
    .story {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      margin-bottom: 56px;
    }
    .story:last-child { margin-bottom: 0; }
    .story--rev .story-media { order: 2; }
    .story-media { border: 1px solid var(--line-strong); overflow: hidden; }
    .story-media img { width: 100%; height: 340px; object-fit: cover; }
    .story h3 { font-size: 26px; }
    .story p { color: var(--stone); }
    .before-after {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-top: 12px;
    }
    .before-after div {
      border: 1px solid var(--line);
      padding: 12px 14px;
      background: var(--card);
      font-size: 14px;
    }
    .before-after b { display: block; font-family: var(--serif); margin-bottom: 6px; color: var(--ink); }
    .scene-blocks {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }
    .scene-block {
      background: var(--card);
      border: 1px solid var(--line-strong);
      padding: 24px 26px;
    }
    .scene-block h3 { font-size: 22px; }
    .scene-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 14px; }
    .scene-block li {
      position: relative;
      padding-left: 14px;
      color: var(--stone);
      font-size: 15px;
      margin-bottom: 6px;
    }
    .scene-block li::before {
      content: "";
      position: absolute;
      left: 0; top: .7em;
      width: 6px; height: 1px;
      background: var(--seal);
    }
    .review-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px 48px;
    }
    .review-col h3 { font-size: 22px; margin-bottom: 16px; }
    .dl {
      border-top: 1px solid var(--line-strong);
    }
    .dl div {
      display: grid;
      grid-template-columns: 120px 1fr;
      gap: 12px;
      padding: 12px 0;
      border-bottom: 1px solid var(--line);
      font-size: 15px;
    }
    .dl dt { font-family: var(--serif); font-weight: 600; }
    .dl dd { margin: 0; color: var(--stone); }
    .rank-list li {
      display: grid;
      grid-template-columns: 36px 1fr auto;
      gap: 12px;
      align-items: baseline;
      padding: 12px 0;
      border-bottom: 1px solid var(--line);
    }
    .rank-list b { font-family: var(--serif); color: var(--seal); }
    .quotes {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .quote {
      border: 1px solid var(--line-strong);
      background: var(--card);
      padding: 26px 26px 20px;
    }
    .quote p {
      font-family: var(--serif);
      font-size: 18px;
      line-height: 1.7;
      margin: 0 0 16px;
    }
    .quote p::before { content: "「"; color: var(--seal); }
    .quote p::after { content: "」"; color: var(--seal); }
    .quote footer { color: var(--stone); font-size: 13px; }
    .news-list { display: flex; flex-direction: column; }
    .news-row {
      display: grid;
      grid-template-columns: 120px 1.1fr 1.4fr;
      gap: 20px;
      padding: 22px 0;
      border-top: 1px solid var(--line-strong);
      align-items: start;
    }
    .news-row time {
      font-family: var(--serif);
      color: var(--seal);
      letter-spacing: .08em;
      font-size: 14px;
    }
    .news-row h3 { font-size: 20px; margin: 0; }
    .news-row p { margin: 0; color: var(--stone); font-size: 15px; }
    .news-more { margin-top: 18px; }
    .partner-wall {
      display: flex;
      flex-wrap: wrap;
      gap: 0;
      border-top: 1px solid var(--line-strong);
      border-bottom: 1px solid var(--line-strong);
    }
    .partner-wall li {
      padding: 18px 22px;
      border-right: 1px solid var(--line);
      font-family: var(--serif);
      font-size: 16px;
    }
    .coop {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 36px;
    }
    .coop article {
      border: 1px solid var(--line-strong);
      padding: 20px 18px;
      background: var(--card);
    }
    .coop h3 { font-size: 18px; }
    .coop p { color: var(--stone); font-size: 14px; margin: 0; }
    .faq-list { max-width: 860px; }
    .faq-item { border-bottom: 1px solid var(--line-strong); }
    .faq-q {
      width: 100%;
      text-align: left;
      min-height: 64px;
      padding: 16px 36px 16px 0;
      font-family: var(--serif);
      font-size: 20px;
      font-weight: 600;
      position: relative;
    }
    .faq-q::after {
      content: "+";
      position: absolute;
      right: 0; top: 50%;
      transform: translateY(-50%);
      color: var(--seal);
      font-weight: 500;
    }
    .faq-item.is-open .faq-q::after { content: "–"; }
    .faq-a {
      height: 0;
      overflow: hidden;
      transition: height 240ms ease;
    }
    .faq-a-inner {
      padding: 0 0 18px;
      color: var(--stone);
      font-size: 16px;
    }
    .assure {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 0;
      border: 1px solid var(--line-strong);
      background: var(--card);
    }
    .assure li {
      padding: 22px 20px;
      border-right: 1px solid var(--line);
      display: grid;
      grid-template-columns: 28px 1fr;
      gap: 12px;
      align-items: start;
    }
    .assure li:last-child { border-right: 0; }
    .assure svg { margin-top: 4px; }
    .assure strong { display: block; font-family: var(--serif); font-size: 16px; }
    .assure span { color: var(--stone); font-size: 14px; }
    .contact-grid {
      display: grid;
      grid-template-columns: .8fr 1.2fr;
      gap: 40px;
      align-items: start;
    }
    .contact-note {
      border-top: 1px solid var(--line-strong);
      padding-top: 16px;
      color: var(--stone);
    }
    .contact-note li { margin-bottom: 10px; padding-left: 12px; position: relative; }
    .contact-note li::before {
      content: "";
      width: 5px; height: 5px;
      background: var(--seal);
      position: absolute;
      left: 0; top: .65em;
    }
    .form {
      background: var(--card);
      border: 1px solid var(--line-strong);
      padding: 28px 28px 24px;
    }
    .form-row { margin-bottom: 16px; }
    .form-row label {
      display: block;
      font-size: 13px;
      letter-spacing: .08em;
      margin-bottom: 6px;
    }
    .form-row input,
    .form-row select,
    .form-row textarea {
      width: 100%;
      background: transparent;
      border: 0;
      border-bottom: 1px solid var(--line-strong);
      border-radius: 0;
      padding: 8px 2px 10px;
      min-height: 44px;
      outline: none;
    }
    .form-row textarea { min-height: 110px; resize: vertical; }
    .form-row input:focus,
    .form-row select:focus,
    .form-row textarea:focus { border-bottom-color: var(--seal); }
    .form-actions { display: flex; justify-content: flex-end; margin-top: 8px; }
    .form-success {
      background: #F3EBE0;
      border: 1px solid var(--line-strong);
      padding: 12px 14px;
      margin-bottom: 16px;
      font-size: 14px;
    }
    .site-footer {
      background: var(--dark);
      color: var(--paper-ink);
      padding: 64px 0 28px;
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr 1fr;
      gap: 32px;
      margin-bottom: 40px;
    }
    .footer-brand {
      font-family: var(--serif);
      font-size: 22px;
      color: var(--paper);
      letter-spacing: .12em;
      margin-bottom: 12px;
    }
    .footer-brand em { color: var(--seal); font-style: normal; padding: 0 4px; }
    .site-footer a { color: var(--paper-ink); }
    .site-footer a:hover { color: #fff; }
    .footer-nav { display: flex; flex-direction: column; gap: 8px; }
    .footer-legal {
      border-top: 1px solid rgba(237,230,216,.12);
      padding-top: 18px;
      display: flex;
      flex-wrap: wrap;
      gap: 10px 22px;
      color: rgba(237,230,216,.7);
      font-size: 12px;
    }
    .fold { margin-top: 18px; color: rgba(237,230,216,.75); font-size: 13px; max-width: 52em; }
    .fold summary { cursor: pointer; color: var(--paper); min-height: 32px; }
    .reveal { opacity: 0; transform: translateY(8px); animation: rise .6s ease forwards; }
    @keyframes rise { to { opacity: 1; transform: none; } }
    @media (max-width: 1280px) {
      .container { padding: 0 28px; }
    }
    @media (max-width: 1024px) {
      :root { --space: 88px; --header-main: 64px; }
      .nav-desktop, .header-cta { display: none; }
      .nav-toggle { display: inline-flex; }
      .section-head, .split, .matrix, .magazine, .contact-grid, .review-grid, .story, .credo-inner, .scene-blocks, .quotes, .footer-grid {
        grid-template-columns: 1fr;
      }
      .story--rev .story-media { order: 0; }
      .matrix-item:nth-child(1) { grid-row: auto; border-right: 0; }
      .prog--lg { grid-row: auto; }
      .magazine { grid-template-rows: none; }
      .adv-grid, .metrics-inner, .coop { grid-template-columns: 1fr 1fr; }
      .timeline { grid-template-columns: 1fr 1fr; gap: 24px; }
      .timeline::before { display: none; }
      .cases-wall { grid-template-columns: 1fr 1fr; grid-template-rows: none; }
      .case:nth-child(n) { grid-column: auto; grid-row: auto; }
      .news-row { grid-template-columns: 1fr; gap: 6px; }
      .assure { grid-template-columns: 1fr 1fr; }
      .assure li { border-bottom: 1px solid var(--line); }
      .hero-controls { right: 16px; bottom: 72px; }
    }
    @media (max-width: 768px) {
      :root { --space: 72px; }
      .container { padding: 0 18px; }
      .header-top span { display: none; }
      .hero-viewport { height: auto; max-height: none; min-height: 0; }
      .hero-slide { position: relative; opacity: 0; height: 0; overflow: hidden; transform: none; }
      .hero-slide.is-active { height: auto; opacity: 1; overflow: visible; }
      .hero-panel { margin: 28px 0; padding: 22px 18px; width: 100%; }
      .hero-panel h1, .hero-title { font-size: 32px; }
      .adv-grid, .metrics-inner, .coop, .assure, .before-after, .quotes, .scene-blocks, .fact-row {
        grid-template-columns: 1fr;
      }
      .timeline { grid-template-columns: 1fr; }
      .cases-wall { grid-template-columns: 1fr; }
      .form { padding: 20px 16px; }
      .form-actions .btn { width: 100%; }
      .partner-wall li { flex: 1 1 50%; border-bottom: 1px solid var(--line); }
      .footer-legal { flex-direction: column; }
      .hero-actions { flex-direction: column; }
      .hero-actions .btn { width: 100%; }
    }
    @media (max-width: 520px) {
      body { font-size: 16px; }
      .kicker-num { font-size: 32px; }
      .logo { font-size: 16px; letter-spacing: .06em; }
      .split-media img, .story-media img { min-height: 0; height: 220px; }
      .seal-badge { width: 88px; height: 88px; font-size: 14px; }
      .dl div { grid-template-columns: 1fr; gap: 4px; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
      }
      .reveal { opacity: 1; transform: none; animation: none; }
    }

/* roulang page: index */
:root {
      --ink: #161412;
      --seal: #A33B32;
      --seal-deep: #8A2F28;
      --paper: #F6F1E8;
      --card: #FFFbf5;
      --dark: #1C1917;
      --line: rgba(22, 20, 18, .12);
      --line-strong: rgba(22, 20, 18, .22);
      --stone: #5E6764;
      --paper-ink: #EDE6D8;
      --cream: #E8DFD0;
      --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
      --sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;
      --max: 1240px;
      --radius: 4px;
      --header-top: 36px;
      --header-main: 72px;
      --z-header: 80;
      --z-overlay: 120;
      --z-drawer: 140;
      --space: 112px;
      --ease: 180ms ease;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    html, body { margin: 0; padding: 0; }
    body {
      font-family: var(--sans);
      font-size: 17px;
      line-height: 1.8;
      color: var(--ink);
      background: var(--paper);
      -webkit-font-smoothing: antialiased;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; }
    a:hover { color: var(--seal); }
    button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }
    button { cursor: pointer; border: 0; background: none; }
    h1, h2, h3, h4 { font-family: var(--serif); font-weight: 600; letter-spacing: -.02em; line-height: 1.2; margin: 0 0 .6em; }
    p { margin: 0 0 1em; }
    ul, ol { margin: 0; padding: 0; list-style: none; }
    :focus-visible { outline: 2px solid var(--seal); outline-offset: 3px; }
    .skip { position: absolute; left: -999px; top: 8px; }
    .skip:focus { left: 8px; z-index: 200; background: var(--card); padding: 8px 12px; }
    .container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 32px; }
    .section { padding: var(--space) 0; position: relative; }
    .section--alt { background: #F1EADF; }
    .section--card { background: var(--card); }
    .kicker { display: flex; align-items: baseline; gap: 14px; margin-bottom: 18px; color: var(--seal); font-family: var(--serif); font-size: 13px; letter-spacing: .18em; }
    .kicker-num { font-size: 42px; line-height: 1; letter-spacing: 0; color: var(--ink); opacity: .18; }
    .section-head { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 32px 48px; align-items: end; margin-bottom: 48px; }
    .section-head h2 { font-size: clamp(28px, 3vw, 38px); margin: 0; }
    .section-lead { color: var(--stone); font-size: 16px; line-height: 1.85; margin: 0; max-width: 42em; }
    .btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 22px; border-radius: var(--radius); font-size: 15px; letter-spacing: .04em; transition: background var(--ease), color var(--ease), box-shadow var(--ease), transform var(--ease); position: relative; }
    .btn-primary { background: var(--ink); color: var(--paper); }
    .btn-primary:hover { background: #0c0b0a; color: var(--paper); box-shadow: inset 0 -2px 0 var(--seal); }
    .btn-seal { background: var(--seal); color: var(--paper); }
    .btn-seal:hover { background: var(--seal-deep); color: var(--paper); box-shadow: inset 0 -2px 0 var(--ink); }
    .btn-ghost { border: 1px solid var(--ink); background: transparent; color: var(--ink); }
    .btn-ghost:hover { border-color: var(--seal); color: var(--seal); }
    .btn:active { transform: translateY(1px); }
    .tag { display: inline-flex; align-items: center; min-height: 32px; padding: 0 10px; border: 1px solid var(--line-strong); border-radius: 2px; font-size: 13px; color: var(--stone); background: var(--card); }
    .site-header { position: relative; z-index: var(--z-header); }
    .header-top { height: var(--header-top); background: var(--ink); color: var(--paper-ink); font-size: 12px; letter-spacing: .04em; }
    .header-top-inner { height: 100%; display: flex; align-items: center; gap: 22px; }
    .header-top a { color: var(--paper-ink); }
    .header-top a:hover { color: #fff; }
    .header-top span { color: rgba(237, 230, 216, .7); margin-left: auto; }
    .header-main { position: sticky; top: 0; z-index: var(--z-header); height: var(--header-main); background: rgba(246, 241, 232, .94); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
    .header-main-inner { height: 100%; display: flex; align-items: center; gap: 24px; }
    .logo { font-family: var(--serif); font-size: 20px; font-weight: 700; letter-spacing: .12em; color: var(--ink); white-space: nowrap; }
    .logo em { font-style: normal; color: var(--seal); padding: 0 4px; }
    .nav-desktop { display: flex; align-items: center; gap: 4px; margin-left: auto; }
    .nav-desktop a { position: relative; padding: 8px 10px; font-size: 14px; color: var(--ink); }
    .nav-desktop a::after { content: ""; position: absolute; left: 10px; right: 10px; bottom: 4px; height: 1px; background: var(--seal); transform: scaleX(0); transform-origin: left; transition: transform 160ms ease; }
    .nav-desktop a:hover::after, .nav-desktop a.is-active::after { transform: scaleX(1); }
    .header-cta { margin-left: 8px; white-space: nowrap; }
    .nav-toggle { display: none; width: 44px; height: 44px; margin-left: auto; position: relative; }
    .nav-toggle span, .nav-toggle span::before, .nav-toggle span::after { position: absolute; left: 12px; right: 12px; height: 1.5px; background: var(--ink); transition: transform var(--ease), opacity var(--ease); }
    .nav-toggle span { top: 21px; }
    .nav-toggle span::before { content: ""; top: -7px; }
    .nav-toggle span::after { content: ""; top: 7px; }
    .nav-overlay { position: fixed; inset: 0; background: rgba(22, 20, 18, .35); opacity: 0; pointer-events: none; transition: opacity 200ms ease; z-index: var(--z-overlay); }
    .nav-overlay.is-open { opacity: 1; pointer-events: auto; }
    .nav-drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(360px, 86vw); background: var(--card); border-left: 1px solid var(--line); transform: translateX(100%); transition: transform 240ms ease; z-index: var(--z-drawer); padding: 28px 22px 40px; display: flex; flex-direction: column; gap: 8px; }
    .nav-drawer.is-open { transform: translateX(0); }
    .drawer-close { align-self: flex-end; width: 44px; height: 44px; font-size: 22px; }
    .nav-drawer a { min-height: 44px; display: flex; align-items: center; padding: 0 8px; border-bottom: 1px solid var(--line); font-family: var(--serif); font-size: 18px; }
    .nav-drawer .btn { margin-top: 18px; width: 100%; }
    .hero { position: relative; background: var(--cream); border-bottom: 1px solid var(--line); }
    .hero-viewport { position: relative; min-height: 420px; height: 52vh; max-height: 560px; overflow: hidden; }
    .hero-slide { position: absolute; inset: 0; opacity: 0; transform: translateX(24px); transition: opacity 500ms ease, transform 500ms ease; pointer-events: none; }
    .hero-slide.is-active { opacity: 1; transform: translateX(0); pointer-events: auto; z-index: 1; }
    .hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; filter: saturate(.85) contrast(1.02); }
    .hero-bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(246,241,232,.55) 0%, rgba(246,241,232,.12) 46%, rgba(22,20,18,.18) 100%); }
    .hero-panel { position: relative; z-index: 2; width: min(560px, 92%); margin: 48px 0; padding: 32px 34px 28px; background: rgba(255, 251, 245, .92); border: 1px solid var(--line-strong); }
    .hero-panel h1, .hero-title { font-family: var(--serif); font-size: clamp(34px, 5vw, 58px); line-height: 1.15; letter-spacing: -.03em; margin: 0 0 16px; }
    .hero-panel p { font-size: 16px; line-height: 1.85; color: var(--stone); margin-bottom: 22px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-controls { position: absolute; right: 32px; bottom: 88px; z-index: 3; display: flex; align-items: center; gap: 10px; }
    .hero-arrow { width: 40px; height: 40px; border: 1px solid rgba(22,20,18,.35); color: var(--ink); background: rgba(255,251,245,.7); border-radius: 2px; }
    .hero-arrow:hover { border-color: var(--seal); color: var(--seal); }
    .hero-dots { display: flex; gap: 6px; margin-left: 8px; }
    .hero-dots button { width: 18px; height: 2px; background: rgba(22,20,18,.28); border-radius: 0; min-height: 12px; padding: 8px 0; background-clip: content-box; }
    .hero-dots button.is-active { width: 36px; background: var(--seal); background-clip: content-box; }
    .subject-rail { border-top: 1px solid var(--line); background: var(--paper); }
    .subject-rail-inner { display: flex; gap: 0; overflow-x: auto; scrollbar-width: none; }
    .subject-rail-inner::-webkit-scrollbar { display: none; }
    .subject-rail a { flex: 0 0 auto; min-height: 56px; display: flex; align-items: center; gap: 10px; padding: 0 22px; border-right: 1px solid var(--line); font-size: 14px; white-space: nowrap; }
    .subject-rail a b { font-family: var(--serif); font-weight: 600; color: var(--seal); }
    .split { display: grid; grid-template-columns: 5fr 7fr; gap: 48px; align-items: center; }
    .split-media { border: 1px solid var(--line-strong); overflow: hidden; background: var(--cream); }
    .split-media img { width: 100%; height: 100%; object-fit: cover; min-height: 360px; }
    .fact-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 18px; margin-top: 24px; }
    .fact { border-top: 1px solid var(--line-strong); padding-top: 10px; }
    .fact b { display: block; font-family: var(--serif); font-size: 22px; font-weight: 600; }
    .fact span { color: var(--stone); font-size: 13px; }
    .matrix { display: grid; grid-template-columns: 1.15fr .85fr; gap: 18px 28px; }
    .matrix-item { display: grid; grid-template-columns: 72px 1fr; gap: 8px 16px; padding: 22px 8px 22px 0; border-top: 1px solid var(--line); }
    .matrix-item:nth-child(1) { grid-row: span 2; padding: 8px 24px 24px 0; border-right: 1px solid var(--line); }
    .matrix-item:nth-child(1) .matrix-body { font-size: 16px; }
    .matrix-no { font-family: var(--serif); font-size: 34px; line-height: 1; color: var(--ink); opacity: .28; }
    .matrix-item h3 { font-size: 22px; margin: 0 0 8px; }
    .matrix-body { color: var(--stone); font-size: 15px; margin: 0; }
    .adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .adv-card { background: var(--card); border: 1px solid var(--line-strong); padding: 26px 24px 22px; min-height: 210px; transition: transform 160ms ease, border-color 160ms ease; }
    .adv-card:hover { transform: translateY(-3px); border-color: var(--seal); }
    .adv-card .ico { width: 28px; height: 28px; margin-bottom: 16px; color: var(--ink); }
    .adv-card h3 { font-size: 20px; }
    .adv-card p { color: var(--stone); font-size: 15px; margin: 0; }
    .magazine { display: grid; grid-template-columns: 1.4fr .9fr; grid-template-rows: 1fr 1fr; gap: 16px; }
    .prog { position: relative; background: var(--card); border: 1px solid var(--line-strong); overflow: hidden; display: flex; flex-direction: column; min-height: 220px; transition: border-color 160ms ease, transform 160ms ease; }
    .prog:hover { border-color: var(--seal); transform: translateY(-3px); }
    .prog--lg { grid-row: 1 / 3; min-height: 520px; }
    .prog img { width: 100%; height: 180px; object-fit: cover; }
    .prog--lg img { height: 280px; }
    .prog-body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
    .prog-body h3 { font-size: 22px; }
    .prog-meta { color: var(--stone); font-size: 14px; margin-bottom: 14px; }
    .prog-body .btn { align-self: flex-start; margin-top: auto; }
    .timeline { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; position: relative; }
    .timeline::before { content: ""; position: absolute; top: 18px; left: 6%; right: 6%; height: 1px; background: var(--line-strong); }
    .step { padding: 0 14px 0 0; position: relative; }
    .step-no { width: 36px; height: 36px; border: 1px solid var(--ink); background: var(--paper); display: flex; align-items: center; justify-content: center; font-family: var(--serif); margin-bottom: 16px; position: relative; z-index: 1; }
    .step h3 { font-size: 18px; }
    .step p { color: var(--stone); font-size: 14px; margin: 0; }
    .metrics { background: var(--ink); color: var(--paper); padding: 36px 0; }
    .metrics-inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px 24px; }
    .metric { padding: 8px 12px; border-left: 1px solid rgba(237,230,216,.18); }
    .metric b { display: block; font-family: var(--serif); font-size: clamp(32px, 4vw, 48px); line-height: 1.1; font-weight: 600; }
    .metric span { color: var(--paper-ink); font-size: 14px; }
    .credo { position: relative; color: var(--paper); min-height: 360px; display: flex; align-items: center; overflow: hidden; }
    .credo-bg { position: absolute; inset: 0; background-size: cover; background-position: center; filter: grayscale(.35) contrast(1.05); }
    .credo-bg::after { content: ""; position: absolute; inset: 0; background: rgba(28, 25, 23, .82); }
    .credo-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: center; }
    .credo blockquote { margin: 0; font-family: var(--serif); font-size: clamp(28px, 4vw, 44px); line-height: 1.35; font-weight: 600; }
    .credo p { color: var(--paper-ink); max-width: 40em; margin: 18px 0 0; }
    .seal-badge { width: 120px; height: 120px; border: 2px solid var(--seal); border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-direction: column; color: var(--seal); transform: rotate(-12deg); font-family: var(--serif); letter-spacing: .2em; font-size: 18px; }
    .seal-badge small { letter-spacing: .12em; font-size: 11px; margin-top: 4px; }
    .cases-wall { display: grid; grid-template-columns: 1.3fr 1.3fr 1fr; grid-template-rows: repeat(4, minmax(120px, auto)); gap: 14px; }
    .case { background: var(--card); border: 1px solid var(--line-strong); padding: 0; overflow: hidden; display: flex; flex-direction: column; }
    .case:nth-child(1) { grid-column: 1 / 3; grid-row: 1 / 3; }
    .case:nth-child(2) { grid-column: 1 / 3; grid-row: 3 / 5; }
    .case:nth-child(3) { grid-column: 3; grid-row: 1; }
    .case:nth-child(4) { grid-column: 3; grid-row: 2; }
    .case:nth-child(5) { grid-column: 3; grid-row: 3; }
    .case:nth-child(6) { grid-column: 3; grid-row: 4; }
    .case img { width: 100%; height: 180px; object-fit: cover; }
    .case:nth-child(1) img, .case:nth-child(2) img { height: 220px; }
    .case:nth-child(n+3) img { display: none; }
    .case-body { padding: 18px 20px 16px; }
    .case h3 { font-size: 20px; }
    .case p, .case-body p { color: var(--stone); font-size: 14px; margin: 0 0 8px; }
    .case details { margin-top: 6px; }
    .case summary { cursor: pointer; color: var(--seal); font-size: 14px; list-style: none; min-height: 32px; }
    .case summary::-webkit-details-marker { display: none; }
    .story { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; margin-bottom: 56px; }
    .story:last-child { margin-bottom: 0; }
    .story--rev .story-media { order: 2; }
    .story-media { border: 1px solid var(--line-strong); overflow: hidden; }
    .story-media img { width: 100%; height: 340px; object-fit: cover; }
    .story h3 { font-size: 26px; }
    .story p { color: var(--stone); }
    .before-after { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 12px; }
    .before-after div { border: 1px solid var(--line); padding: 12px 14px; background: var(--card); font-size: 14px; }
    .before-after b { display: block; font-family: var(--serif); margin-bottom: 6px; color: var(--ink); }
    .scene-blocks { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
    .scene-block { background: var(--card); border: 1px solid var(--line-strong); padding: 24px 26px; }
    .scene-block h3 { font-size: 22px; }
    .scene-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 14px; }
    .scene-block li { position: relative; padding-left: 14px; color: var(--stone); font-size: 15px; margin-bottom: 6px; }
    .scene-block li::before { content: ""; position: absolute; left: 0; top: .7em; width: 6px; height: 1px; background: var(--seal); }
    .review-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px 48px; }
    .review-col h3 { font-size: 22px; margin-bottom: 16px; }
    .dl { border-top: 1px solid var(--line-strong); }
    .dl div { display: grid; grid-template-columns: 120px 1fr; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
    .dl dt { font-family: var(--serif); font-weight: 600; }
    .dl dd { margin: 0; color: var(--stone); }
    .rank-list li { display: grid; grid-template-columns: 36px 1fr auto; gap: 12px; align-items: baseline; padding: 12px 0; border-bottom: 1px solid var(--line); }
    .rank-list b { font-family: var(--serif); color: var(--seal); }
    .quotes { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .quote { border: 1px solid var(--line-strong); background: var(--card); padding: 26px 26px 20px; }
    .quote p { font-family: var(--serif); font-size: 18px; line-height: 1.7; margin: 0 0 16px; }
    .quote p::before { content: "「"; color: var(--seal); }
    .quote p::after { content: "」"; color: var(--seal); }
    .quote footer { color: var(--stone); font-size: 13px; }
    .news-list { display: flex; flex-direction: column; }
    .news-row { display: grid; grid-template-columns: 120px 1.1fr 1.4fr; gap: 20px; padding: 22px 0; border-top: 1px solid var(--line-strong); align-items: start; }
    .news-row time { font-family: var(--serif); color: var(--seal); letter-spacing: .08em; font-size: 14px; }
    .news-row h3 { font-size: 20px; margin: 0; }
    .news-row p { margin: 0; color: var(--stone); font-size: 15px; }
    .news-more { margin-top: 18px; }
    .partner-wall { display: flex; flex-wrap: wrap; gap: 0; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); }
    .partner-wall li { padding: 18px 22px; border-right: 1px solid var(--line); font-family: var(--serif); font-size: 16px; }
    .coop { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 36px; }
    .coop article { border: 1px solid var(--line-strong); padding: 20px 18px; background: var(--card); }
    .coop h3 { font-size: 18px; }
    .coop p { color: var(--stone); font-size: 14px; margin: 0; }
    .faq-list { max-width: 860px; }
    .faq-item { border-bottom: 1px solid var(--line-strong); }
    .faq-q { width: 100%; text-align: left; min-height: 64px; padding: 16px 36px 16px 0; font-family: var(--serif); font-size: 20px; font-weight: 600; position: relative; }
    .faq-q::after { content: "+"; position: absolute; right: 0; top: 50%; transform: translateY(-50%); color: var(--seal); font-weight: 500; }
    .faq-item.is-open .faq-q::after { content: "–"; }
    .faq-a { height: 0; overflow: hidden; transition: height 240ms ease; }
    .faq-a-inner { padding: 0 0 18px; color: var(--stone); font-size: 16px; }
    .assure { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--line-strong); background: var(--card); }
    .assure li { padding: 22px 20px; border-right: 1px solid var(--line); display: grid; grid-template-columns: 28px 1fr; gap: 12px; align-items: start; }
    .assure li:last-child { border-right: 0; }
    .assure svg { margin-top: 4px; }
    .assure strong { display: block; font-family: var(--serif); font-size: 16px; }
    .assure span { color: var(--stone); font-size: 14px; }
    .contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; align-items: start; }
    .contact-note { border-top: 1px solid var(--line-strong); padding-top: 16px; color: var(--stone); }
    .contact-note li { margin-bottom: 10px; padding-left: 12px; position: relative; }
    .contact-note li::before { content: ""; width: 5px; height: 5px; background: var(--seal); position: absolute; left: 0; top: .65em; }
    .form { background: var(--card); border: 1px solid var(--line-strong); padding: 28px 28px 24px; }
    .form-row { margin-bottom: 16px; }
    .form-row label { display: block; font-size: 13px; letter-spacing: .08em; margin-bottom: 6px; }
    .form-row input, .form-row select, .form-row textarea { width: 100%; background: transparent; border: 0; border-bottom: 1px solid var(--line-strong); border-radius: 0; padding: 8px 2px 10px; min-height: 44px; outline: none; }
    .form-row textarea { min-height: 110px; resize: vertical; }
    .form-row input:focus, .form-row select:focus, .form-row textarea:focus { border-bottom-color: var(--seal); }
    .form-actions { display: flex; justify-content: flex-end; margin-top: 8px; }
    .form-success { background: #F3EBE0; border: 1px solid var(--line-strong); padding: 12px 14px; margin-bottom: 16px; font-size: 14px; }
    .site-footer { background: var(--dark); color: var(--paper-ink); padding: 64px 0 28px; font-size: 14px; }
    .footer-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 32px; margin-bottom: 40px; }
    .footer-brand { font-family: var(--serif); font-size: 22px; color: var(--paper); letter-spacing: .12em; margin-bottom: 12px; }
    .footer-brand em { color: var(--seal); font-style: normal; padding: 0 4px; }
    .site-footer a { color: var(--paper-ink); }
    .site-footer a:hover { color: #fff; }
    .footer-nav { display: flex; flex-direction: column; gap: 8px; }
    .footer-legal { border-top: 1px solid rgba(237,230,216,.12); padding-top: 18px; display: flex; flex-wrap: wrap; gap: 10px 22px; color: rgba(237,230,216,.7); font-size: 12px; }
    .fold { margin-top: 18px; color: rgba(237,230,216,.75); font-size: 13px; max-width: 52em; }
    .fold summary { cursor: pointer; color: var(--paper); min-height: 32px; }
    @media (max-width: 1280px) { .container { padding: 0 28px; } }
    @media (max-width: 1024px) {
      :root { --space: 88px; --header-main: 64px; }
      .nav-desktop, .header-cta { display: none; }
      .nav-toggle { display: inline-flex; }
      .section-head, .split, .matrix, .magazine, .contact-grid, .review-grid, .story, .credo-inner, .scene-blocks, .quotes, .footer-grid { grid-template-columns: 1fr; }
      .story--rev .story-media { order: 0; }
      .matrix-item:nth-child(1) { grid-row: auto; border-right: 0; }
      .prog--lg { grid-row: auto; }
      .magazine { grid-template-rows: none; }
      .adv-grid, .metrics-inner, .coop { grid-template-columns: 1fr 1fr; }
      .timeline { grid-template-columns: 1fr 1fr; gap: 24px; }
      .timeline::before { display: none; }
      .cases-wall { grid-template-columns: 1fr 1fr; grid-template-rows: none; }
      .case:nth-child(n) { grid-column: auto; grid-row: auto; }
      .news-row { grid-template-columns: 1fr; gap: 6px; }
      .assure { grid-template-columns: 1fr 1fr; }
      .assure li { border-bottom: 1px solid var(--line); }
      .hero-controls { right: 16px; bottom: 72px; }
    }
    @media (max-width: 768px) {
      :root { --space: 72px; }
      .container { padding: 0 18px; }
      .header-top span { display: none; }
      .hero-viewport { height: auto; max-height: none; min-height: 0; }
      .hero-slide { position: relative; opacity: 0; height: 0; overflow: hidden; transform: none; }
      .hero-slide.is-active { height: auto; opacity: 1; overflow: visible; }
      .hero-panel { margin: 28px 0; padding: 22px 18px; width: 100%; }
      .hero-panel h1, .hero-title { font-size: 32px; }
      .adv-grid, .metrics-inner, .coop, .assure, .before-after, .quotes, .scene-blocks, .fact-row { grid-template-columns: 1fr; }
      .timeline { grid-template-columns: 1fr; }
      .cases-wall { grid-template-columns: 1fr; }
      .form { padding: 20px 16px; }
      .form-actions .btn { width: 100%; }
      .partner-wall li { flex: 1 1 50%; border-bottom: 1px solid var(--line); }
      .footer-legal { flex-direction: column; }
      .hero-actions { flex-direction: column; }
      .hero-actions .btn { width: 100%; }
    }
    @media (max-width: 520px) {
      body { font-size: 16px; }
      .kicker-num { font-size: 32px; }
      .logo { font-size: 16px; letter-spacing: .06em; }
      .split-media img, .story-media img { min-height: 0; height: 220px; }
      .seal-badge { width: 88px; height: 88px; font-size: 14px; }
      .dl div { grid-template-columns: 1fr; gap: 4px; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
    }

/* roulang page: index */
:root {
      --ink: #161412;
      --seal: #A33B32;
      --seal-deep: #8A2F28;
      --paper: #F6F1E8;
      --card: #FFFbf5;
      --dark: #1C1917;
      --line: rgba(22, 20, 18, .12);
      --line-strong: rgba(22, 20, 18, .22);
      --stone: #5E6764;
      --paper-ink: #EDE6D8;
      --cream: #E8DFD0;
      --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
      --sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;
      --max: 1240px;
      --radius: 4px;
      --header-top: 36px;
      --header-main: 72px;
      --z-header: 80;
      --z-overlay: 120;
      --z-drawer: 140;
      --space: 112px;
      --ease: 180ms ease;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    html, body { margin: 0; padding: 0; }
    body {
      font-family: var(--sans);
      font-size: 17px;
      line-height: 1.8;
      color: var(--ink);
      background: var(--paper);
      -webkit-font-smoothing: antialiased;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; }
    a:hover { color: var(--seal); }
    button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }
    button { cursor: pointer; border: 0; background: none; }
    h1, h2, h3, h4 { font-family: var(--serif); font-weight: 600; letter-spacing: -.02em; line-height: 1.2; margin: 0 0 .6em; }
    p { margin: 0 0 1em; }
    ul, ol { margin: 0; padding: 0; list-style: none; }
    :focus-visible { outline: 2px solid var(--seal); outline-offset: 3px; }
    .skip { position: absolute; left: -999px; top: 8px; }
    .skip:focus { left: 8px; z-index: 200; background: var(--card); padding: 8px 12px; }
    .container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 32px; }
    .section { padding: var(--space) 0; position: relative; }
    .section--alt { background: #F1EADF; }
    .section--card { background: var(--card); }
    .kicker { display: flex; align-items: baseline; gap: 14px; margin-bottom: 18px; color: var(--seal); font-family: var(--serif); font-size: 13px; letter-spacing: .18em; }
    .kicker-num { font-size: 42px; line-height: 1; letter-spacing: 0; color: var(--ink); opacity: .18; }
    .section-head { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 32px 48px; align-items: end; margin-bottom: 48px; }
    .section-head h2 { font-size: clamp(28px, 3vw, 38px); margin: 0; }
    .section-lead { color: var(--stone); font-size: 16px; line-height: 1.85; margin: 0; max-width: 42em; }
    .btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 22px; border-radius: var(--radius); font-size: 15px; letter-spacing: .04em; transition: background var(--ease), color var(--ease), box-shadow var(--ease), transform var(--ease); position: relative; }
    .btn-primary { background: var(--ink); color: var(--paper); }
    .btn-primary:hover { background: #0c0b0a; color: var(--paper); box-shadow: inset 0 -2px 0 var(--seal); }
    .btn-seal { background: var(--seal); color: var(--paper); }
    .btn-seal:hover { background: var(--seal-deep); color: var(--paper); box-shadow: inset 0 -2px 0 var(--ink); }
    .btn-ghost { border: 1px solid var(--ink); background: transparent; color: var(--ink); }
    .btn-ghost:hover { border-color: var(--seal); color: var(--seal); }
    .btn:active { transform: translateY(1px); }
    .tag { display: inline-flex; align-items: center; min-height: 32px; padding: 0 10px; border: 1px solid var(--line-strong); border-radius: 2px; font-size: 13px; color: var(--stone); background: var(--card); }
    .site-header { position: relative; z-index: var(--z-header); }
    .header-top { height: var(--header-top); background: var(--ink); color: var(--paper-ink); font-size: 12px; letter-spacing: .04em; }
    .header-top-inner { height: 100%; display: flex; align-items: center; gap: 22px; }
    .header-top a { color: var(--paper-ink); }
    .header-top a:hover { color: #fff; }
    .header-top span { color: rgba(237, 230, 216, .7); margin-left: auto; }
    .header-main { position: sticky; top: 0; z-index: var(--z-header); height: var(--header-main); background: rgba(246, 241, 232, .94); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
    .header-main-inner { height: 100%; display: flex; align-items: center; gap: 24px; }
    .logo { font-family: var(--serif); font-size: 20px; font-weight: 700; letter-spacing: .12em; color: var(--ink); white-space: nowrap; }
    .logo em { font-style: normal; color: var(--seal); padding: 0 4px; }
    .nav-desktop { display: flex; align-items: center; gap: 4px; margin-left: auto; }
    .nav-desktop a { position: relative; padding: 8px 10px; font-size: 14px; color: var(--ink); }
    .nav-desktop a::after { content: ""; position: absolute; left: 10px; right: 10px; bottom: 4px; height: 1px; background: var(--seal); transform: scaleX(0); transform-origin: left; transition: transform 160ms ease; }
    .nav-desktop a:hover::after, .nav-desktop a.is-active::after { transform: scaleX(1); }
    .header-cta { margin-left: 8px; white-space: nowrap; }
    .nav-toggle { display: none; width: 44px; height: 44px; margin-left: auto; position: relative; }
    .nav-toggle span, .nav-toggle span::before, .nav-toggle span::after { position: absolute; left: 12px; right: 12px; height: 1.5px; background: var(--ink); transition: transform var(--ease), opacity var(--ease); }
    .nav-toggle span { top: 21px; }
    .nav-toggle span::before { content: ""; top: -7px; }
    .nav-toggle span::after { content: ""; top: 7px; }
    .nav-overlay { position: fixed; inset: 0; background: rgba(22, 20, 18, .35); opacity: 0; pointer-events: none; transition: opacity 200ms ease; z-index: var(--z-overlay); }
    .nav-overlay.is-open { opacity: 1; pointer-events: auto; }
    .nav-drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(360px, 86vw); background: var(--card); border-left: 1px solid var(--line); transform: translateX(100%); transition: transform 240ms ease; z-index: var(--z-drawer); padding: 28px 22px 40px; display: flex; flex-direction: column; gap: 8px; }
    .nav-drawer.is-open { transform: translateX(0); }
    .drawer-close { align-self: flex-end; width: 44px; height: 44px; font-size: 22px; }
    .nav-drawer a { min-height: 44px; display: flex; align-items: center; padding: 0 8px; border-bottom: 1px solid var(--line); font-family: var(--serif); font-size: 18px; }
    .nav-drawer .btn { margin-top: 18px; width: 100%; }
    .hero { position: relative; background: var(--cream); border-bottom: 1px solid var(--line); }
    .hero-viewport { position: relative; min-height: 420px; height: 52vh; max-height: 560px; overflow: hidden; }
    .hero-slide { position: absolute; inset: 0; opacity: 0; transform: translateX(24px); transition: opacity 500ms ease, transform 500ms ease; pointer-events: none; }
    .hero-slide.is-active { opacity: 1; transform: translateX(0); pointer-events: auto; z-index: 1; }
    .hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; filter: saturate(.85) contrast(1.02); }
    .hero-bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(246,241,232,.55) 0%, rgba(246,241,232,.12) 46%, rgba(22,20,18,.18) 100%); }
    .hero-panel { position: relative; z-index: 2; width: min(560px, 92%); margin: 48px 0; padding: 32px 34px 28px; background: rgba(255, 251, 245, .92); border: 1px solid var(--line-strong); }
    .hero-panel h1, .hero-title { font-family: var(--serif); font-size: clamp(34px, 5vw, 58px); line-height: 1.15; letter-spacing: -.03em; margin: 0 0 16px; }
    .hero-panel p { font-size: 16px; line-height: 1.85; color: var(--stone); margin-bottom: 22px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-controls { position: absolute; right: 32px; bottom: 88px; z-index: 3; display: flex; align-items: center; gap: 10px; }
    .hero-arrow { width: 40px; height: 40px; border: 1px solid rgba(22,20,18,.35); color: var(--ink); background: rgba(255,251,245,.7); border-radius: 2px; }
    .hero-arrow:hover { border-color: var(--seal); color: var(--seal); }
    .hero-dots { display: flex; gap: 6px; margin-left: 8px; }
    .hero-dots button { width: 18px; height: 2px; background: rgba(22,20,18,.28); border-radius: 0; min-height: 12px; padding: 8px 0; background-clip: content-box; }
    .hero-dots button.is-active { width: 36px; background: var(--seal); background-clip: content-box; }
    .subject-rail { border-top: 1px solid var(--line); background: var(--paper); }
    .subject-rail-inner { display: flex; gap: 0; overflow-x: auto; scrollbar-width: none; }
    .subject-rail-inner::-webkit-scrollbar { display: none; }
    .subject-rail a { flex: 0 0 auto; min-height: 56px; display: flex; align-items: center; gap: 10px; padding: 0 22px; border-right: 1px solid var(--line); font-size: 14px; white-space: nowrap; }
    .subject-rail a b { font-family: var(--serif); font-weight: 600; color: var(--seal); }
    .split { display: grid; grid-template-columns: 5fr 7fr; gap: 48px; align-items: center; }
    .split-media { border: 1px solid var(--line-strong); overflow: hidden; background: var(--cream); }
    .split-media img { width: 100%; height: 100%; object-fit: cover; min-height: 360px; }
    .fact-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 18px; margin-top: 24px; }
    .fact { border-top: 1px solid var(--line-strong); padding-top: 10px; }
    .fact b { display: block; font-family: var(--serif); font-size: 22px; font-weight: 600; }
    .fact span { color: var(--stone); font-size: 13px; }
    .matrix { display: grid; grid-template-columns: 1.15fr .85fr; gap: 18px 28px; }
    .matrix-item { display: grid; grid-template-columns: 72px 1fr; gap: 8px 16px; padding: 22px 8px 22px 0; border-top: 1px solid var(--line); }
    .matrix-item:nth-child(1) { grid-row: span 2; padding: 8px 24px 24px 0; border-right: 1px solid var(--line); }
    .matrix-item:nth-child(1) .matrix-body { font-size: 16px; }
    .matrix-no { font-family: var(--serif); font-size: 34px; line-height: 1; color: var(--ink); opacity: .28; }
    .matrix-item h3 { font-size: 22px; margin: 0 0 8px; }
    .matrix-body { color: var(--stone); font-size: 15px; margin: 0; }
    .adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .adv-card { background: var(--card); border: 1px solid var(--line-strong); padding: 26px 24px 22px; min-height: 210px; transition: transform 160ms ease, border-color 160ms ease; }
    .adv-card:hover { transform: translateY(-3px); border-color: var(--seal); }
    .adv-card .ico { width: 28px; height: 28px; margin-bottom: 16px; color: var(--ink); }
    .adv-card h3 { font-size: 20px; }
    .adv-card p { color: var(--stone); font-size: 15px; margin: 0; }
    .magazine { display: grid; grid-template-columns: 1.4fr .9fr; grid-template-rows: 1fr 1fr; gap: 16px; }
    .prog { position: relative; background: var(--card); border: 1px solid var(--line-strong); overflow: hidden; display: flex; flex-direction: column; min-height: 220px; transition: border-color 160ms ease, transform 160ms ease; }
    .prog:hover { border-color: var(--seal); transform: translateY(-3px); }
    .prog--lg { grid-row: 1 / 3; min-height: 520px; }
    .prog img { width: 100%; height: 180px; object-fit: cover; }
    .prog--lg img { height: 280px; }
    .prog-body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
    .prog-body h3 { font-size: 22px; }
    .prog-meta { color: var(--stone); font-size: 14px; margin-bottom: 14px; }
    .prog-body .btn { align-self: flex-start; margin-top: auto; }
    .timeline { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; position: relative; }
    .timeline::before { content: ""; position: absolute; top: 18px; left: 6%; right: 6%; height: 1px; background: var(--line-strong); }
    .step { padding: 0 14px 0 0; position: relative; }
    .step-no { width: 36px; height: 36px; border: 1px solid var(--ink); background: var(--paper); display: flex; align-items: center; justify-content: center; font-family: var(--serif); margin-bottom: 16px; position: relative; z-index: 1; }
    .step h3 { font-size: 18px; }
    .step p { color: var(--stone); font-size: 14px; margin: 0; }
    .metrics { background: var(--ink); color: var(--paper); padding: 36px 0; }
    .metrics-inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px 24px; }
    .metric { padding: 8px 12px; border-left: 1px solid rgba(237,230,216,.18); }
    .metric b { display: block; font-family: var(--serif); font-size: clamp(32px, 4vw, 48px); line-height: 1.1; font-weight: 600; }
    .metric span { color: var(--paper-ink); font-size: 14px; }
    .credo { position: relative; color: var(--paper); min-height: 360px; display: flex; align-items: center; overflow: hidden; }
    .credo-bg { position: absolute; inset: 0; background-size: cover; background-position: center; filter: grayscale(.35) contrast(1.05); }
    .credo-bg::after { content: ""; position: absolute; inset: 0; background: rgba(28, 25, 23, .82); }
    .credo-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: center; }
    .credo blockquote { margin: 0; font-family: var(--serif); font-size: clamp(28px, 4vw, 44px); line-height: 1.35; font-weight: 600; }
    .credo p { color: var(--paper-ink); max-width: 40em; margin: 18px 0 0; }
    .seal-badge { width: 120px; height: 120px; border: 2px solid var(--seal); border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-direction: column; color: var(--seal); transform: rotate(-12deg); font-family: var(--serif); letter-spacing: .2em; font-size: 18px; }
    .seal-badge small { letter-spacing: .12em; font-size: 11px; margin-top: 4px; }
    .cases-wall { display: grid; grid-template-columns: 1.3fr 1.3fr 1fr; grid-template-rows: repeat(4, minmax(120px, auto)); gap: 14px; }
    .case { background: var(--card); border: 1px solid var(--line-strong); padding: 0; overflow: hidden; display: flex; flex-direction: column; }
    .case:nth-child(1) { grid-column: 1 / 3; grid-row: 1 / 3; }
    .case:nth-child(2) { grid-column: 1 / 3; grid-row: 3 / 5; }
    .case:nth-child(3) { grid-column: 3; grid-row: 1; }
    .case:nth-child(4) { grid-column: 3; grid-row: 2; }
    .case:nth-child(5) { grid-column: 3; grid-row: 3; }
    .case:nth-child(6) { grid-column: 3; grid-row: 4; }
    .case img { width: 100%; height: 180px; object-fit: cover; }
    .case:nth-child(1) img, .case:nth-child(2) img { height: 220px; }
    .case:nth-child(n+3) img { display: none; }
    .case-body { padding: 18px 20px 16px; }
    .case h3 { font-size: 20px; }
    .case p, .case-body p { color: var(--stone); font-size: 14px; margin: 0 0 8px; }
    .case details { margin-top: 6px; }
    .case summary { cursor: pointer; color: var(--seal); font-size: 14px; list-style: none; min-height: 32px; }
    .case summary::-webkit-details-marker { display: none; }
    .story { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; margin-bottom: 56px; }
    .story:last-child { margin-bottom: 0; }
    .story--rev .story-media { order: 2; }
    .story-media { border: 1px solid var(--line-strong); overflow: hidden; }
    .story-media img { width: 100%; height: 340px; object-fit: cover; }
    .story h3 { font-size: 26px; }
    .story p { color: var(--stone); }
    .before-after { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 12px; }
    .before-after div { border: 1px solid var(--line); padding: 12px 14px; background: var(--card); font-size: 14px; }
    .before-after b { display: block; font-family: var(--serif); margin-bottom: 6px; color: var(--ink); }
    .scene-blocks { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
    .scene-block { background: var(--card); border: 1px solid var(--line-strong); padding: 24px 26px; }
    .scene-block h3 { font-size: 22px; }
    .scene-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 14px; }
    .scene-block li { position: relative; padding-left: 14px; color: var(--stone); font-size: 15px; margin-bottom: 6px; }
    .scene-block li::before { content: ""; position: absolute; left: 0; top: .7em; width: 6px; height: 1px; background: var(--seal); }
    .review-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px 48px; }
    .review-col h3 { font-size: 22px; margin-bottom: 16px; }
    .dl { border-top: 1px solid var(--line-strong); }
    .dl div { display: grid; grid-template-columns: 120px 1fr; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
    .dl dt { font-family: var(--serif); font-weight: 600; }
    .dl dd { margin: 0; color: var(--stone); }
    .rank-list li { display: grid; grid-template-columns: 36px 1fr auto; gap: 12px; align-items: baseline; padding: 12px 0; border-bottom: 1px solid var(--line); }
    .rank-list b { font-family: var(--serif); color: var(--seal); }
    .quotes { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .quote { border: 1px solid var(--line-strong); background: var(--card); padding: 26px 26px 20px; }
    .quote p { font-family: var(--serif); font-size: 18px; line-height: 1.7; margin: 0 0 16px; }
    .quote p::before { content: "「"; color: var(--seal); }
    .quote p::after { content: "」"; color: var(--seal); }
    .quote footer { color: var(--stone); font-size: 13px; }
    .news-list { display: flex; flex-direction: column; }
    .news-row { display: grid; grid-template-columns: 120px 1.1fr 1.4fr; gap: 20px; padding: 22px 0; border-top: 1px solid var(--line-strong); align-items: start; }
    .news-row time { font-family: var(--serif); color: var(--seal); letter-spacing: .08em; font-size: 14px; }
    .news-row h3 { font-size: 20px; margin: 0; }
    .news-row p { margin: 0; color: var(--stone); font-size: 15px; }
    .news-more { margin-top: 18px; }
    .partner-wall { display: flex; flex-wrap: wrap; gap: 0; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); }
    .partner-wall li { padding: 18px 22px; border-right: 1px solid var(--line); font-family: var(--serif); font-size: 16px; }
    .coop { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 36px; }
    .coop article { border: 1px solid var(--line-strong); padding: 20px 18px; background: var(--card); }
    .coop h3 { font-size: 18px; }
    .coop p { color: var(--stone); font-size: 14px; margin: 0; }
    .faq-list { max-width: 860px; }
    .faq-item { border-bottom: 1px solid var(--line-strong); }
    .faq-q { width: 100%; text-align: left; min-height: 64px; padding: 16px 36px 16px 0; font-family: var(--serif); font-size: 20px; font-weight: 600; position: relative; }
    .faq-q::after { content: "+"; position: absolute; right: 0; top: 50%; transform: translateY(-50%); color: var(--seal); font-weight: 500; }
    .faq-item.is-open .faq-q::after { content: "–"; }
    .faq-a { height: 0; overflow: hidden; transition: height 240ms ease; }
    .faq-a-inner { padding: 0 0 18px; color: var(--stone); font-size: 16px; }
    .assure { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--line-strong); background: var(--card); }
    .assure li { padding: 22px 20px; border-right: 1px solid var(--line); display: grid; grid-template-columns: 28px 1fr; gap: 12px; align-items: start; }
    .assure li:last-child { border-right: 0; }
    .assure svg { margin-top: 4px; }
    .assure strong { display: block; font-family: var(--serif); font-size: 16px; }
    .assure span { color: var(--stone); font-size: 14px; }
    .contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; align-items: start; }
    .contact-note { border-top: 1px solid var(--line-strong); padding-top: 16px; color: var(--stone); }
    .contact-note li { margin-bottom: 10px; padding-left: 12px; position: relative; }
    .contact-note li::before { content: ""; width: 5px; height: 5px; background: var(--seal); position: absolute; left: 0; top: .65em; }
    .form { background: var(--card); border: 1px solid var(--line-strong); padding: 28px 28px 24px; }
    .form-row { margin-bottom: 16px; }
    .form-row label { display: block; font-size: 13px; letter-spacing: .08em; margin-bottom: 6px; }
    .form-row input, .form-row select, .form-row textarea { width: 100%; background: transparent; border: 0; border-bottom: 1px solid var(--line-strong); border-radius: 0; padding: 8px 2px 10px; min-height: 44px; outline: none; }
    .form-row textarea { min-height: 110px; resize: vertical; }
    .form-row input:focus, .form-row select:focus, .form-row textarea:focus { border-bottom-color: var(--seal); }
    .form-actions { display: flex; justify-content: flex-end; margin-top: 8px; }
    .form-success { background: #F3EBE0; border: 1px solid var(--line-strong); padding: 12px 14px; margin-bottom: 16px; font-size: 14px; }
    .site-footer { background: var(--dark); color: var(--paper-ink); padding: 64px 0 28px; font-size: 14px; }
    .footer-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 32px; margin-bottom: 40px; }
    .footer-brand { font-family: var(--serif); font-size: 22px; color: var(--paper); letter-spacing: .12em; margin-bottom: 12px; }
    .footer-brand em { color: var(--seal); font-style: normal; padding: 0 4px; }
    .site-footer a { color: var(--paper-ink); }
    .site-footer a:hover { color: #fff; }
    .footer-nav { display: flex; flex-direction: column; gap: 8px; }
    .footer-legal { border-top: 1px solid rgba(237,230,216,.12); padding-top: 18px; display: flex; flex-wrap: wrap; gap: 10px 22px; color: rgba(237,230,216,.7); font-size: 12px; }
    .fold { margin-top: 18px; color: rgba(237,230,216,.75); font-size: 13px; max-width: 52em; }
    .fold summary { cursor: pointer; color: var(--paper); min-height: 32px; }
    .band-photo { position: relative; min-height: 220px; overflow: hidden; }
    .band-photo .band-bg { position: absolute; inset: 0; background-size: cover; background-position: center; filter: grayscale(.25) contrast(1.04); }
    .band-photo .band-bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(246,241,232,.88), rgba(246,241,232,.35)); }
    .band-photo .container { position: relative; z-index: 1; padding-top: 48px; padding-bottom: 48px; }
    .band-photo h2 { font-size: clamp(26px, 3vw, 36px); max-width: 16em; }
    .band-photo p { max-width: 40em; color: var(--stone); margin: 0; }
    @media (max-width: 1280px) { .container { padding: 0 28px; } }
    @media (max-width: 1024px) {
      :root { --space: 88px; --header-main: 64px; }
      .nav-desktop, .header-cta { display: none; }
      .nav-toggle { display: inline-flex; }
      .section-head, .split, .matrix, .magazine, .contact-grid, .review-grid, .story, .credo-inner, .scene-blocks, .quotes, .footer-grid { grid-template-columns: 1fr; }
      .story--rev .story-media { order: 0; }
      .matrix-item:nth-child(1) { grid-row: auto; border-right: 0; }
      .prog--lg { grid-row: auto; }
      .magazine { grid-template-rows: none; }
      .adv-grid, .metrics-inner, .coop { grid-template-columns: 1fr 1fr; }
      .timeline { grid-template-columns: 1fr 1fr; gap: 24px; }
      .timeline::before { display: none; }
      .cases-wall { grid-template-columns: 1fr 1fr; grid-template-rows: none; }
      .case:nth-child(n) { grid-column: auto; grid-row: auto; }
      .news-row { grid-template-columns: 1fr; gap: 6px; }
      .assure { grid-template-columns: 1fr 1fr; }
      .assure li { border-bottom: 1px solid var(--line); }
      .hero-controls { right: 16px; bottom: 72px; }
    }
    @media (max-width: 768px) {
      :root { --space: 72px; }
      .container { padding: 0 18px; }
      .header-top span { display: none; }
      .hero-viewport { height: auto; max-height: none; min-height: 0; }
      .hero-slide { position: relative; opacity: 0; height: 0; overflow: hidden; transform: none; }
      .hero-slide.is-active { height: auto; opacity: 1; overflow: visible; }
      .hero-panel { margin: 28px 0; padding: 22px 18px; width: 100%; }
      .hero-panel h1, .hero-title { font-size: 32px; }
      .adv-grid, .metrics-inner, .coop, .assure, .before-after, .quotes, .scene-blocks, .fact-row { grid-template-columns: 1fr; }
      .timeline { grid-template-columns: 1fr; }
      .cases-wall { grid-template-columns: 1fr; }
      .form { padding: 20px 16px; }
      .form-actions .btn { width: 100%; }
      .partner-wall li { flex: 1 1 50%; border-bottom: 1px solid var(--line); }
      .footer-legal { flex-direction: column; }
      .hero-actions { flex-direction: column; }
      .hero-actions .btn { width: 100%; }
    }
    @media (max-width: 520px) {
      body { font-size: 16px; }
      .kicker-num { font-size: 32px; }
      .logo { font-size: 16px; letter-spacing: .06em; }
      .split-media img, .story-media img { min-height: 0; height: 220px; }
      .seal-badge { width: 88px; height: 88px; font-size: 14px; }
      .dl div { grid-template-columns: 1fr; gap: 4px; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
    }