/* roulang page: index */
:root {
  --ink: #1E2321;
  --maple: #C4A36A;
  --copper: #8A5A32;
  --paper: #F7F4EE;
  --fog: #E7E2D8;
  --char: #12110F;
  --silver: #B7B3A9;
  --cream: #FBF8F2;
  --line: rgba(30, 35, 33, 0.12);
  --line-strong: rgba(30, 35, 33, 0.22);
  --text: #1E2321;
  --muted: #5C5852;
  --weak: #7A756C;
  --white: #F7F4EE;
  --danger: #8A3B2A;
  --radius: 4px;
  --shadow: 0 8px 24px rgba(18, 17, 15, 0.06);
  --space: 104px;
  --space-m: 64px;
  --container: 1280px;
  --nav-h: 58px;
  --tool-h: 40px;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --num: "Barlow Condensed", "Roboto Condensed", "DIN Alternate", "Arial Narrow", "Noto Sans SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; overflow-x: hidden; }
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.78;
  color: var(--text);
  background: var(--paper);
  letter-spacing: 0.01em;
}
img { max-width: 100%; height: auto; display: block; border: 0; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font-family: inherit; }
button { cursor: pointer; }
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 600; letter-spacing: -0.03em; line-height: 1.22; margin: 0; color: var(--ink); }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
::selection { background: rgba(196, 163, 106, 0.35); color: var(--ink); }
.skip {
  position: absolute; left: -999px; top: 0;
  background: var(--ink); color: var(--paper); padding: 8px 14px; z-index: 100;
}
.skip:focus { left: 12px; top: 12px; }
.container { width: min(var(--container), calc(100% - 48px)); margin: 0 auto; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12px; letter-spacing: 0.18em; text-transform: none;
  color: var(--copper); font-weight: 500;
}
.eyebrow::before {
  content: ""; width: 22px; height: 1px; background: var(--copper);
}
.lead { color: var(--muted); font-size: 15px; max-width: 46em; }
.sec-head { display: grid; grid-template-columns: auto 1fr; gap: 28px 40px; align-items: end; margin-bottom: 48px; }
.sec-num {
  font-family: var(--num); font-size: 72px; line-height: 0.8; color: rgba(30, 35, 33, 0.12);
  font-weight: 600; letter-spacing: -0.04em; font-variant-numeric: tabular-nums;
}
.sec-head h2 { font-size: clamp(28px, 3.2vw, 40px); max-width: 16em; }
.sec-head .lead { grid-column: 2; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 0 22px; border-radius: var(--radius);
  font-size: 14px; font-weight: 500; letter-spacing: 0.04em;
  border: 1px solid transparent; transition: background .22s ease, color .22s ease, border-color .22s ease, transform .22s ease;
}
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover, .btn-primary:active { background: var(--maple); color: var(--ink); transform: translateY(-2px); }
.btn-ghost { background: transparent; color: var(--paper); border-color: rgba(247, 244, 238, 0.55); }
.btn-ghost:hover { border-color: var(--maple); color: var(--maple); transform: translateY(-2px); }
.btn-line { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-line:hover { border-color: var(--maple); color: var(--copper); transform: translateY(-2px); }
.btn:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 2px solid var(--copper); outline-offset: 3px;
}
.site-header {
  position: relative; z-index: 80; background: var(--cream);
  border-bottom: 1px solid var(--line);
}
.tool-bar {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  height: var(--tool-h); width: min(var(--container), calc(100% - 48px)); margin: 0 auto;
  font-size: 12px; color: var(--muted); letter-spacing: 0.02em;
  transition: transform .28s ease, opacity .28s ease, height .28s ease;
}
.tool-bar.is-hide { transform: translateY(-100%); opacity: 0; height: 0; overflow: hidden; pointer-events: none; }
.tool-left, .tool-mid, .tool-right { display: flex; align-items: center; gap: 14px; min-height: 44px; }
.tool-left strong { color: var(--ink); font-weight: 600; font-size: 13px; font-variant-numeric: tabular-nums; }
.trust { color: var(--copper); }
.trust::before { content: ""; display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--maple); margin-right: 8px; vertical-align: middle; }
.tool-cta {
  min-height: 28px; padding: 0 12px; border: 1px solid var(--ink); color: var(--ink);
  font-size: 12px; letter-spacing: 0.08em; border-radius: 2px;
}
.tool-cta:hover { background: var(--ink); color: var(--paper); }
.nav-bar {
  position: sticky; top: 0; z-index: 90; background: rgba(247, 244, 238, 0.94);
  backdrop-filter: saturate(1.1);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  width: min(var(--container), calc(100% - 48px)); margin: 0 auto;
  height: var(--nav-h); display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.logo {
  display: flex; align-items: baseline; gap: 10px; flex-shrink: 0;
  font-family: var(--serif); font-size: 20px; font-weight: 650; color: var(--ink); letter-spacing: 0.08em;
}
.logo span { display: block; font-family: var(--sans); font-size: 10px; letter-spacing: 0.22em; color: var(--copper); font-weight: 500; margin-top: 2px; }
.logo-mark {
  width: 14px; height: 14px; border: 1px solid var(--copper);
  display: inline-block; position: relative; margin-right: 2px; transform: translateY(1px);
}
.logo-mark::after { content: ""; position: absolute; inset: 3px; background: var(--maple); }
.menu {
  display: flex; align-items: center; gap: 4px 22px;
}
.menu a {
  position: relative; font-size: 13px; color: var(--muted); padding: 8px 0; min-height: 44px;
  display: inline-flex; align-items: center; font-weight: 400;
}
.menu a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 6px; height: 1px;
  background: var(--copper); transform: scaleX(0); transform-origin: left; transition: transform .24s ease;
}
.menu a:hover { color: var(--ink); }
.menu a:hover::after, .menu a.is-active::after { transform: scaleX(1); }
.menu a.is-active { color: var(--ink); font-weight: 650; }
.nav-toggle {
  display: none; width: 44px; height: 44px; border: 0; background: transparent; padding: 0; position: relative;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  display: block; width: 18px; height: 1px; background: var(--ink); position: absolute; left: 13px; transition: .2s ease;
}
.nav-toggle span { top: 21px; }
.nav-toggle span::before { content: ""; top: -6px; }
.nav-toggle span::after { content: ""; top: 6px; }
.nav-toggle.is-open span { background: transparent; }
.nav-toggle.is-open span::before { top: 0; transform: rotate(45deg); }
.nav-toggle.is-open span::after { top: 0; transform: rotate(-45deg); }
.drawer-mask { display: none; }
section { position: relative; }
.hero {
  position: relative; background: var(--char); color: var(--paper);
  min-height: clamp(520px, 62vw, 760px);
  aspect-ratio: 2.15 / 1;
  max-height: 86vh;
  overflow: hidden;
}
.slides { position: absolute; inset: 0; }
.slide {
  position: absolute; inset: 0; opacity: 0; visibility: hidden;
  transition: opacity .8s ease, visibility .8s ease;
}
.slide.is-on { opacity: 1; visibility: visible; z-index: 1; }
.slide img {
  width: 100%; height: 100%; object-fit: cover; filter: saturate(0.86) contrast(1.05);
  transform: scale(1.04); animation: ken 14s ease-in-out alternate infinite;
}
.slide::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(18,17,15,.78) 0%, rgba(18,17,15,.35) 42%, rgba(18,17,15,.22) 58%, rgba(18,17,15,.62) 100%),
    linear-gradient(180deg, rgba(18,17,15,.15) 0%, rgba(18,17,15,.55) 100%);
}
@keyframes ken { from { transform: scale(1.02); } to { transform: scale(1.09); } }
.hero-frame {
  position: relative; z-index: 2; height: 100%;
  width: min(var(--container), calc(100% - 48px)); margin: 0 auto;
  display: grid; grid-template-rows: 1fr auto auto; padding: 36px 0 28px;
}
.stage-row {
  display: grid; grid-template-columns: 180px 1fr 180px; gap: 24px; align-items: center;
  min-height: 160px;
}
.vpoint {
  border-top: 1px solid rgba(196,163,106,.45);
  border-bottom: 1px solid rgba(196,163,106,.45);
  padding: 16px 0;
}
.vpoint b {
  display: block; font-family: var(--num); font-size: 28px; color: var(--maple);
  font-weight: 600; letter-spacing: -0.03em; font-variant-numeric: tabular-nums;
}
.vpoint span { display: block; margin-top: 6px; font-size: 12px; color: rgba(247,244,238,.78); letter-spacing: 0.08em; }
.stage-core { text-align: center; color: rgba(247,244,238,.55); font-size: 12px; letter-spacing: 0.28em; }
.stage-core i {
  display: inline-block; width: 46px; height: 46px; border: 1px solid rgba(196,163,106,.4);
  margin-bottom: 10px; position: relative;
}
.stage-core i::before, .stage-core i::after {
  content: ""; position: absolute; background: var(--maple);
}
.stage-core i::before { left: 50%; top: 8px; bottom: 8px; width: 1px; }
.stage-core i::after { top: 50%; left: 8px; right: 8px; height: 1px; }
.hero-copy { max-width: 820px; padding-bottom: 8px; }
.brand-kicker { font-size: 13px; letter-spacing: 0.28em; color: var(--maple); margin-bottom: 14px; }
.hero h1, .slide-title {
  font-family: var(--serif); font-size: clamp(32px, 4.6vw, 68px); color: var(--paper);
  font-weight: 600; letter-spacing: -0.035em; line-height: 1.16; margin-bottom: 18px;
}
.hero-desc { font-size: 15px; line-height: 1.85; color: rgba(247,244,238,.86); max-width: 42em; margin-bottom: 26px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-ctrl {
  position: absolute; z-index: 3; left: 0; right: 0; bottom: 0;
  display: flex; align-items: center; justify-content: space-between;
  width: min(var(--container), calc(100% - 48px)); margin: 0 auto; padding-bottom: 18px;
}
.dots { display: flex; gap: 8px; }
.dots button {
  width: 22px; height: 22px; min-width: 44px; min-height: 44px; border: 0; background: transparent; position: relative;
}
.dots button::after {
  content: ""; position: absolute; left: 50%; top: 50%; width: 8px; height: 8px; transform: translate(-50%,-50%);
  border: 1px solid var(--maple); background: transparent;
}
.dots button.is-on::after { background: var(--maple); }
.arrows { display: flex; gap: 8px; }
.arrows button {
  width: 44px; height: 44px; border: 1px solid rgba(247,244,238,.35); background: transparent; color: var(--paper);
  border-radius: 2px; font-size: 16px;
}
.arrows button:hover { border-color: var(--maple); color: var(--maple); }
.progress {
  position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: rgba(247,244,238,.15); z-index: 4;
}
.progress > i {
  display: block; height: 100%; width: 0; background: var(--maple);
  transition: width linear;
}
.metrics { padding: var(--space) 0; background: var(--paper); }
.board {
  display: grid; grid-template-columns: repeat(6, 1fr);
  border: 1px solid var(--line-strong); background:
    linear-gradient(180deg, #FBF7EE 0%, #F3EEE4 100%);
}
.kpi {
  padding: 28px 22px 24px; border-right: 1px solid var(--line);
  min-height: 168px;
}
.kpi:last-child { border-right: 0; }
.kpi .n {
  font-family: var(--num); font-variant-numeric: tabular-nums;
  font-size: 48px; line-height: 1; color: var(--ink); letter-spacing: -0.04em; font-weight: 600;
}
.kpi .u { font-size: 14px; color: var(--copper); margin-left: 4px; font-family: var(--sans); }
.kpi .l { margin-top: 12px; font-size: 13px; color: var(--muted); letter-spacing: 0.06em; }
.kpi .f { margin-top: 18px; font-size: 12px; color: var(--weak); border-top: 1px solid var(--line); padding-top: 10px; }
.intro { padding: var(--space) 0; background: var(--fog); }
.intro-grid {
  display: grid; grid-template-columns: 5fr 7fr; gap: 56px; align-items: center;
}
.intro-pic { position: relative; }
.intro-pic img { width: 100%; height: 520px; object-fit: cover; filter: saturate(.9); }
.intro-pic::after {
  content: ""; position: absolute; left: -14px; bottom: -14px; width: 42%; height: 18%;
  border: 1px solid var(--copper); pointer-events: none;
}
.intro h2 { font-size: clamp(28px, 3vw, 40px); margin: 12px 0 20px; }
.spec-list { margin-top: 28px; display: grid; gap: 0; border-top: 1px solid var(--line-strong); }
.spec-list li {
  display: grid; grid-template-columns: 120px 1fr; gap: 16px;
  padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 14px;
}
.spec-list b { color: var(--copper); font-weight: 500; }
.matrix { padding: var(--space) 0; background: var(--paper); }
.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line-strong); border: 1px solid var(--line-strong); }
.cap {
  background: var(--cream); padding: 32px 28px 28px; min-height: 220px;
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
  border: 1px solid transparent;
}
.cap:hover { transform: translateY(-4px); border-color: var(--maple); box-shadow: var(--shadow); position: relative; z-index: 1; }
.cap .no { font-family: var(--num); font-size: 13px; letter-spacing: 0.16em; color: var(--copper); }
.cap h3 { font-size: 22px; margin: 16px 0 12px; }
.cap p { font-size: 14px; color: var(--muted); }
.machines { padding: var(--space) 0; background: #EFE9DC; }
.poster-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.poster {
  background: var(--char); color: var(--paper); overflow: hidden;
  border: 1px solid transparent; transition: transform .22s ease, border-color .22s ease;
}
.poster:hover { transform: translateY(-4px); border-color: var(--maple); }
.poster img { width: 100%; height: 280px; object-fit: cover; }
.poster-body { padding: 22px 22px 24px; border-top: 1px solid rgba(196,163,106,.35); }
.poster h3 { color: var(--paper); font-size: 22px; margin-bottom: 8px; }
.poster .scene { font-size: 13px; color: var(--maple); margin-bottom: 12px; }
.poster ul { margin: 0 0 18px; }
.poster li { font-size: 13px; color: rgba(247,244,238,.8); padding-left: 12px; position: relative; margin: 6px 0; }
.poster li::before { content: ""; width: 5px; height: 1px; background: var(--maple); position: absolute; left: 0; top: 10px; }
.compare { padding: var(--space) 0; background: var(--paper); }
.compare-table {
  display: grid; grid-template-columns: 1fr 1px 1fr; gap: 0; border: 1px solid var(--line-strong);
  background: var(--cream);
}
.midline { background: var(--maple); }
.col { padding: 32px 36px 36px; }
.col h3 { font-size: 20px; margin-bottom: 8px; }
.col .sub { font-size: 13px; color: var(--weak); margin-bottom: 22px; }
.row {
  display: grid; grid-template-columns: 88px 1fr; gap: 12px; padding: 12px 0;
  border-bottom: 1px solid var(--line); font-size: 14px;
}
.row b { color: var(--copper); font-weight: 500; }
.philosophy {
  padding: 110px 0; background: var(--char); color: var(--paper);
  background-image: linear-gradient(180deg, rgba(18,17,15,.82), rgba(18,17,15,.88)), url("/assets/images/810612ba8d2abf75.jpg");
  background-size: cover; background-position: center;
}
.phi-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 64px; align-items: start; }
.phi-quote {
  font-family: var(--serif); font-size: clamp(30px, 3.6vw, 48px); color: var(--paper);
  line-height: 1.28; letter-spacing: -0.03em;
}
.phi-quote span { color: var(--maple); }
.cases { display: grid; gap: 22px; }
.case-card { border-top: 1px solid rgba(196,163,106,.4); padding-top: 22px; }
.case-card h3 { color: var(--maple); font-size: 18px; margin-bottom: 8px; }
.case-card p { color: rgba(247,244,238,.82); font-size: 14px; }
.scenes { padding: var(--space) 0; background: var(--fog); }
.scene-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 48px; }
.scene-item {
  display: grid; grid-template-columns: 56px 1fr; gap: 16px;
  padding: 22px 0; border-bottom: 1px solid var(--line-strong);
}
.scene-item:nth-child(even) { transform: translateY(18px); }
.scene-item .idx { font-family: var(--num); font-size: 28px; color: var(--copper); letter-spacing: -0.04em; }
.scene-item h3 { font-size: 20px; margin-bottom: 6px; }
.scene-item p { font-size: 14px; color: var(--muted); }
.scene-item .fit { font-size: 12px; color: var(--copper); letter-spacing: 0.06em; margin-bottom: 6px; }
.milestones { padding: var(--space) 0; background: var(--paper); }
.axis { position: relative; margin-left: 8px; padding-left: 28px; border-left: 1px solid var(--line-strong); }
.node { position: relative; padding: 0 0 40px 12px; }
.node:last-child { padding-bottom: 0; }
.node::before {
  content: ""; position: absolute; left: -34px; top: 8px; width: 9px; height: 9px;
  background: var(--paper); border: 1px solid var(--copper);
}
.node .y { font-family: var(--num); font-size: 13px; color: var(--copper); letter-spacing: 0.16em; }
.node h3 { font-size: 22px; margin: 6px 0 8px; }
.node p { font-size: 14px; color: var(--muted); max-width: 52em; }
.stories { padding: var(--space) 0; background: var(--fog); }
.story {
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; margin-bottom: 72px;
}
.story:last-child { margin-bottom: 0; }
.story:nth-child(even) { grid-template-columns: .95fr 1.05fr; }
.story:nth-child(even) .story-txt { order: -1; }
.story img { width: 100%; height: 380px; object-fit: cover; }
.story h3 { font-size: 26px; margin: 10px 0 14px; }
.story p { font-size: 15px; color: var(--muted); }
.role { font-size: 12px; letter-spacing: 0.14em; color: var(--copper); }
.reviews { padding: var(--space) 0; background: var(--paper); }
.rev-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; grid-template-rows: auto auto; gap: 18px; }
.rev {
  border: 1px solid var(--line-strong); padding: 28px 26px; background: var(--cream);
  transition: transform .22s ease, border-color .22s ease;
}
.rev:hover { transform: translateY(-3px); border-color: var(--maple); }
.rev.big { grid-row: 1 / span 2; padding: 40px 36px; background: var(--ink); color: var(--paper); }
.rev.big h3, .rev.big p, .rev.big .who { color: var(--paper); }
.rev.big p { font-family: var(--serif); font-size: 26px; line-height: 1.45; letter-spacing: -0.02em; }
.q { font-family: var(--serif); font-size: 42px; line-height: 1; color: var(--maple); display: block; margin-bottom: 8px; opacity: .7; }
.rev p { font-size: 14px; color: var(--muted); }
.who { margin-top: 18px; font-size: 13px; color: var(--ink); }
.who small { display: block; color: var(--weak); font-size: 12px; margin-top: 2px; }
.news { padding: var(--space) 0; background: #EFE9DC; }
.news-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 18px; }
.news-card {
  background: var(--cream); border: 1px solid var(--line); display: flex; flex-direction: column;
  transition: transform .22s ease, border-color .22s ease;
}
.news-card:hover { transform: translateY(-3px); border-color: var(--maple); }
.news-card:first-child { grid-row: span 1; }
.news-card img { width: 100%; height: 180px; object-fit: cover; }
.news-card .body { padding: 18px 18px 20px; }
.tag { font-size: 11px; letter-spacing: 0.14em; color: var(--copper); }
.news-card h3 { font-size: 18px; margin: 8px 0 10px; }
.news-card p { font-size: 13px; color: var(--muted); }
.more { margin-top: 22px; }
.assurance { padding: var(--space) 0; background: var(--paper); }
.assure-wrap { display: grid; grid-template-columns: 1.3fr .7fr; gap: 48px; align-items: start; }
.checks li {
  display: grid; grid-template-columns: 108px 1fr; gap: 16px;
  padding: 16px 0; border-bottom: 1px solid var(--line); font-size: 14px;
}
.checks b { color: var(--ink); }
.stamps { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.stamp {
  aspect-ratio: 1.15; border: 1px dashed var(--copper); display: flex; flex-direction: column;
  align-items: center; justify-content: center; text-align: center; padding: 16px; color: var(--copper);
}
.stamp strong { display: block; font-family: var(--serif); font-size: 18px; margin-bottom: 6px; }
.stamp span { font-size: 12px; letter-spacing: 0.12em; }
.quick { padding: var(--space) 0; background: var(--fog); }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: 8px; }
.step { padding: 8px 28px 8px 0; position: relative; }
.step:not(:last-child)::after {
  content: ""; position: absolute; right: 18px; top: 22px; width: 40px; height: 1px; background: var(--maple);
}
.step .sn { font-family: var(--num); font-size: 42px; color: rgba(138,90,50,.35); line-height: 1; }
.step h3 { font-size: 20px; margin: 8px 0; }
.step p { font-size: 14px; color: var(--muted); }
.faq { padding: var(--space) 0; background: var(--paper); }
.acc { border-top: 1px solid var(--line-strong); }
.acc-item { border-bottom: 1px solid var(--line-strong); }
.acc-btn {
  width: 100%; text-align: left; background: transparent; border: 0;
  min-height: 64px; padding: 18px 40px 18px 14px; font-size: 16px; font-weight: 600;
  font-family: var(--serif); color: var(--ink); position: relative;
}
.acc-item.is-open { border-left: 2px solid var(--copper); }
.acc-item.is-open .acc-btn { padding-left: 12px; }
.acc-btn::after {
  content: "+"; position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  font-family: var(--num); font-weight: 400; color: var(--copper); font-size: 22px;
}
.acc-item.is-open .acc-btn::after { content: "–"; }
.acc-panel { display: none; padding: 0 16px 20px 12px; color: var(--muted); font-size: 14px; max-width: 58em; }
.acc-item.is-open .acc-panel { display: block; }
.contact { padding: var(--space) 0 96px; background: var(--fog); }
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: start; }
.contact h2 { font-size: clamp(28px, 3vw, 40px); margin: 12px 0 16px; }
.side-info { margin-top: 28px; display: grid; gap: 12px; font-size: 14px; }
.side-info div { border-top: 1px solid var(--line-strong); padding-top: 12px; }
.side-info b { display: block; font-size: 12px; color: var(--copper); letter-spacing: 0.12em; font-weight: 500; margin-bottom: 4px; }
.form {
  background: var(--cream); border: 1px solid var(--line-strong); padding: 32px;
}
.form-row { margin-bottom: 16px; }
.form label { display: block; font-size: 12px; letter-spacing: 0.08em; color: var(--muted); margin-bottom: 6px; }
.form input, .form select, .form textarea {
  width: 100%; height: 44px; border: 0; border-bottom: 1px solid var(--line-strong);
  background: transparent; color: var(--ink); font-size: 15px; border-radius: 0; outline: none;
}
.form textarea { height: 88px; padding: 8px 0; resize: vertical; }
.form input:focus, .form select:focus, .form textarea:focus { border-bottom-color: var(--copper); }
.err { color: var(--danger); font-size: 12px; margin-top: 6px; }
.success {
  border: 1px solid var(--maple); padding: 28px; background: #F4EBD8; color: var(--ink);
}
.success h3 { margin-bottom: 8px; }
.site-footer {
  background: var(--char); color: rgba(247,244,238,.78); padding: 64px 0 28px; font-size: 13px;
}
.foot-grid { display: grid; grid-template-columns: 1.2fr 1fr 1.1fr .9fr; gap: 36px; margin-bottom: 40px; }
.foot-brand { font-family: var(--serif); font-size: 22px; color: var(--paper); letter-spacing: 0.08em; margin-bottom: 12px; }
.site-footer a { color: rgba(247,244,238,.78); }
.site-footer a:hover { color: var(--maple); }
.site-footer h4 { color: var(--maple); font-family: var(--sans); font-size: 12px; letter-spacing: 0.16em; font-weight: 500; margin-bottom: 14px; }
.foot-nav { display: grid; gap: 8px; }
.legal { border-top: 1px solid rgba(183,179,169,.2); padding-top: 16px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 12px; color: rgba(247,244,238,.5); }
.saw {
  height: 8px; background:
    repeating-linear-gradient(90deg, var(--maple) 0 6px, transparent 6px 14px);
  opacity: .28; width: 120px; margin: 16px 0;
}
@media (max-width: 1199px) {
  .board { grid-template-columns: repeat(3, 1fr); }
  .kpi:nth-child(3) { border-right: 0; }
  .kpi:nth-child(n+4) { border-top: 1px solid var(--line); }
  .menu { gap: 4px 14px; }
  .menu a { font-size: 12px; }
  .news-grid { grid-template-columns: 1fr 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 991px) {
  .container, .nav-inner, .tool-bar, .hero-frame, .hero-ctrl { width: calc(100% - 40px); }
  .intro-grid, .phi-grid, .assure-wrap, .contact-grid, .story, .story:nth-child(even) { grid-template-columns: 1fr; }
  .story:nth-child(even) .story-txt { order: 0; }
  .stage-row { grid-template-columns: 1fr 1fr; }
  .stage-core { display: none; }
  .cap-grid { grid-template-columns: 1fr 1fr; }
  .poster-grid { grid-template-columns: 1fr; }
  .poster img, .story img, .intro-pic img { height: 280px; }
  .rev-grid { grid-template-columns: 1fr; }
  .rev.big { grid-row: auto; }
  .compare-table { grid-template-columns: 1fr; }
  .midline { height: 1px; }
  .steps { grid-template-columns: 1fr; }
  .step:not(:last-child)::after { display: none; }
  .scene-item:nth-child(even) { transform: none; }
  .hero { aspect-ratio: auto; min-height: 640px; max-height: none; }
}
@media (max-width: 767px) {
  :root { --space: 64px; }
  .tool-mid { display: none; }
  .nav-toggle { display: block; }
  .menu {
    position: fixed; inset: 0; background: var(--char); color: var(--paper);
    flex-direction: column; justify-content: center; align-items: stretch;
    padding: 88px 28px 40px; gap: 0; display: none; z-index: 95;
  }
  .menu.is-open { display: flex; }
  .menu a { color: var(--paper); font-size: 22px; font-family: var(--serif); min-height: 52px; border-bottom: 1px solid rgba(247,244,238,.12); }
  .menu a::after { display: none; }
  .board { grid-template-columns: 1fr 1fr; }
  .kpi { min-height: 140px; padding: 20px 16px; }
  .kpi .n { font-size: 36px; }
  .kpi:nth-child(odd) { border-right: 1px solid var(--line); }
  .kpi:nth-child(even) { border-right: 0; }
  .kpi:nth-child(n+3) { border-top: 1px solid var(--line); }
  .cap-grid, .scene-list, .news-grid, .stamps { grid-template-columns: 1fr; }
  .sec-head { grid-template-columns: 1fr; gap: 8px; }
  .sec-num { font-size: 48px; }
  .sec-head .lead { grid-column: 1; }
  .form { padding: 22px 16px; }
  .hero h1, .slide-title { font-size: 32px; }
  .vpoint b { font-size: 22px; }
  .legal { flex-direction: column; }
  .intro-pic::after { display: none; }
}
@media (max-width: 519px) {
  .container, .nav-inner, .tool-bar, .hero-frame, .hero-ctrl { width: calc(100% - 32px); }
  .tool-left span { display: none; }
  .board { grid-template-columns: 1fr; }
  .kpi { border-right: 0 !important; border-top: 1px solid var(--line); }
  .kpi:first-child { border-top: 0; }
  .spec-list li, .checks li, .row { grid-template-columns: 1fr; gap: 4px; }
  .stage-row { grid-template-columns: 1fr; gap: 8px; }
  .hero { min-height: 680px; }
  .phi-quote { font-size: 28px; }
  .rev.big p { font-size: 20px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .slide img { animation: none; transform: none; }
  .slide, .btn, .cap, .poster, .rev, .news-card, .menu a::after, .progress > i {
    transition: none !important; animation: none !important;
  }
}

/* roulang page: index */
:root {
      --ink: #1E2321;
      --maple: #C4A36A;
      --copper: #8A5A32;
      --paper: #F7F4EE;
      --mist: #E7E2D8;
      --char: #12110F;
      --silver: #B7B3A9;
      --cream: #FBF8F2;
      --danger: #7A2E2E;
      --ok: #2F4A3C;
      --white: #FFFdf8;
      --line: rgba(30, 35, 33, 0.12);
      --line-strong: rgba(30, 35, 33, 0.28);
      --shadow: 0 10px 30px rgba(18, 17, 15, 0.06);
      --radius: 4px;
      --container: 1280px;
      --gutter: 24px;
      --header-top: 42px;
      --header-nav: 58px;
      --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;
      --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --font-num: "Barlow Condensed", "Roboto Condensed", "Arial Narrow", "DIN Alternate", sans-serif;
      --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 72px; }
    html, body { margin: 0; padding: 0; }
    body {
      font-family: var(--font-sans);
      color: var(--ink);
      background: var(--paper);
      line-height: 1.78;
      font-size: 16px;
      letter-spacing: 0.01em;
      overflow-x: hidden;
      text-rendering: optimizeLegibility;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font-family: inherit; }
    button { cursor: pointer; border: 0; background: none; }
    h1, h2, h3, h4 { font-family: var(--font-serif); font-weight: 600; letter-spacing: -0.03em; line-height: 1.22; margin: 0; }
    p { margin: 0; }
    ul, ol { margin: 0; padding: 0; list-style: none; }
    :focus-visible { outline: 2px solid var(--copper); outline-offset: 3px; }
    .skip {
      position: absolute; left: -999px; top: 8px;
    }
    .skip:focus { left: 8px; z-index: 80; background: var(--cream); padding: 8px 12px; }
    .container {
      width: min(var(--container), calc(100% - 48px));
      margin: 0 auto;
    }
    .num {
      font-family: var(--font-num);
      font-variant-numeric: tabular-nums;
      letter-spacing: 0.02em;
    }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 12px;
      letter-spacing: 0.18em;
      text-transform: none;
      color: var(--copper);
      font-weight: 600;
    }
    .eyebrow::before {
      content: "";
      width: 18px;
      height: 1px;
      background: var(--copper);
    }
    .sec {
      position: relative;
      padding: 108px 0;
    }
    .sec-head {
      display: grid;
      grid-template-columns: 120px 1fr;
      gap: 24px;
      align-items: end;
      margin-bottom: 48px;
    }
    .sec-index {
      font-family: var(--font-num);
      font-size: clamp(56px, 8vw, 92px);
      line-height: 0.8;
      color: rgba(30, 35, 33, 0.12);
      font-weight: 700;
    }
    .sec h2 {
      font-size: clamp(28px, 3.2vw, 40px);
      max-width: 18em;
    }
    .sec-lead {
      margin-top: 16px;
      max-width: 46em;
      color: rgba(30, 35, 33, 0.78);
      font-size: 15px;
      line-height: 1.85;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      padding: 0 22px;
      border-radius: 4px;
      font-size: 14px;
      letter-spacing: 0.04em;
      transition: background 0.25s var(--ease), color 0.25s var(--ease), transform 0.25s var(--ease), border-color 0.25s var(--ease);
      white-space: nowrap;
    }
    .btn-primary {
      background: var(--ink);
      color: var(--paper);
    }
    .btn-primary:hover, .btn-primary:active { background: var(--maple); color: var(--char); }
    .btn-ghost {
      border: 1px solid rgba(251, 248, 242, 0.55);
      color: var(--paper);
      background: transparent;
    }
    .btn-ghost:hover { border-color: var(--maple); color: var(--maple); }
    .btn-line {
      border: 1px solid var(--ink);
      color: var(--ink);
      background: transparent;
    }
    .btn-line:hover { border-color: var(--maple); color: var(--copper); transform: translateY(-2px); }
    .site-header {
      position: relative;
      z-index: 40;
      background: var(--paper);
      border-bottom: 1px solid var(--line);
    }
    .util-bar {
      height: var(--header-top);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      font-size: 12px;
      color: rgba(30, 35, 33, 0.72);
      border-bottom: 1px solid var(--line);
      background: #EFEBE3;
    }
    .util-bar .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      width: min(var(--container), calc(100% - 48px));
    }
    .util-left, .util-mid, .util-right {
      display: flex;
      align-items: center;
      gap: 10px;
      min-height: 44px;
    }
    .util-mid { justify-content: center; flex: 1; }
    .util-dot { width: 3px; height: 3px; border-radius: 50%; background: var(--copper); }
    .util-bar a:hover { color: var(--copper); }
    .util-cta {
      min-height: 32px;
      padding: 0 14px;
      background: var(--ink);
      color: var(--paper) !important;
      font-size: 12px;
      border-radius: 4px;
    }
    .util-cta:hover { background: var(--maple); color: var(--char) !important; }
    .nav-bar {
      height: var(--header-nav);
      background: rgba(247, 244, 238, 0.94);
      backdrop-filter: blur(8px);
    }
    .site-header.is-stuck .nav-bar {
      position: sticky;
      top: 0;
      z-index: 50;
      box-shadow: 0 8px 24px rgba(18, 17, 15, 0.06);
    }
    .site-header.is-compact .util-bar {
      display: none;
    }
    .nav-inner {
      height: var(--header-nav);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-family: var(--font-serif);
      font-size: 20px;
      letter-spacing: 0.08em;
      color: var(--ink);
      min-height: 44px;
    }
    .logo-mark {
      width: 18px;
      height: 18px;
      border: 1px solid var(--copper);
      position: relative;
    }
    .logo-mark::after {
      content: "";
      position: absolute;
      left: 3px; right: 3px; top: 8px;
      height: 1px;
      background: var(--maple);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .nav-links a {
      position: relative;
      display: inline-flex;
      align-items: center;
      min-height: 44px;
      padding: 0 12px;
      font-size: 13px;
      color: rgba(30, 35, 33, 0.78);
      letter-spacing: 0.06em;
    }
    .nav-links a::after {
      content: "";
      position: absolute;
      left: 12px;
      right: 12px;
      bottom: 8px;
      height: 1px;
      background: var(--copper);
      transform: scaleX(0);
      transform-origin: left;
      transition: transform 0.26s var(--ease);
    }
    .nav-links a:hover { color: var(--ink); }
    .nav-links a:hover::after, .nav-links a.is-current::after { transform: scaleX(1); }
    .nav-links a.is-current { font-weight: 700; color: var(--ink); }
    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      gap: 5px;
    }
    .menu-toggle span {
      display: block;
      width: 18px;
      height: 1px;
      background: var(--ink);
      transition: transform 0.2s var(--ease), opacity 0.2s;
    }
    .drawer {
      position: fixed;
      inset: 0;
      background: var(--paper);
      z-index: 60;
      display: none;
      padding: 28px 24px;
      overflow: auto;
    }
    .drawer.is-open { display: block; }
    .drawer-head {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 36px;
    }
    .drawer nav a {
      display: flex;
      align-items: center;
      min-height: 52px;
      border-bottom: 1px solid var(--line);
      font-family: var(--font-serif);
      font-size: 22px;
    }
    .drawer-meta {
      margin-top: 28px;
      font-size: 14px;
      color: rgba(30, 35, 33, 0.7);
      display: grid;
      gap: 8px;
    }
    body.menu-open { overflow: hidden; }
    #hero {
      padding: 0;
      background: var(--char);
      color: var(--paper);
    }
    .hero-stage {
      position: relative;
      min-height: clamp(560px, 74vh, 780px);
      display: grid;
      grid-template-columns: minmax(180px, 240px) 1fr minmax(180px, 240px);
      align-items: stretch;
    }
    .hero-side {
      display: flex;
      flex-direction: column;
      justify-content: center;
      gap: 28px;
      padding: 48px 28px;
      border-color: rgba(183, 179, 169, 0.22);
      position: relative;
      z-index: 3;
    }
    .hero-side.left { border-right: 1px solid rgba(183, 179, 169, 0.18); }
    .hero-side.right { border-left: 1px solid rgba(183, 179, 169, 0.18); }
    .vp {
      display: grid;
      gap: 6px;
    }
    .vp b {
      font-family: var(--font-num);
      font-size: 28px;
      font-weight: 600;
      color: var(--maple);
      letter-spacing: 0.02em;
    }
    .vp span { font-size: 13px; color: rgba(247, 244, 238, 0.72); line-height: 1.5; }
    .hero-center { position: relative; overflow: hidden; min-height: 560px; }
    .slides { position: absolute; inset: 0; }
    .slide {
      position: absolute;
      inset: 0;
      opacity: 0;
      visibility: hidden;
      transition: opacity 0.8s var(--ease), visibility 0.8s;
    }
    .slide.is-active { opacity: 1; visibility: visible; z-index: 1; }
    .slide img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transform: scale(1.04);
      animation: ken 14s linear infinite alternate;
    }
    .slide.is-active img { animation-name: ken; }
    @keyframes ken {
      from { transform: scale(1.02) translate3d(0, 0, 0); }
      to { transform: scale(1.08) translate3d(-1.2%, -1%, 0); }
    }
    .slide-mask {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(18, 17, 15, 0.12) 10%, rgba(18, 17, 15, 0.72) 100%);
      z-index: 1;
    }
    .slide-copy {
      position: absolute;
      left: 36px;
      right: 36px;
      bottom: 54px;
      z-index: 2;
      max-width: 720px;
    }
    .brand-chip {
      display: inline-block;
      font-size: 12px;
      letter-spacing: 0.22em;
      color: var(--maple);
      margin-bottom: 14px;
    }
    .slide-copy h1, .slide-copy h2 {
      font-size: clamp(32px, 4.6vw, 64px);
      color: var(--paper);
      max-width: 10em;
      text-shadow: 0 10px 30px rgba(0,0,0,0.25);
    }
    .slide-copy p {
      margin-top: 16px;
      font-size: 15px;
      color: rgba(247, 244, 238, 0.86);
      max-width: 36em;
    }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
    .hero-ctrl {
      position: absolute;
      right: 24px;
      top: 24px;
      z-index: 4;
      display: flex;
      gap: 8px;
    }
    .hero-ctrl button, .dots button {
      width: 44px;
      height: 44px;
      border: 1px solid rgba(183, 179, 169, 0.45);
      color: var(--paper);
      display: grid;
      place-items: center;
      border-radius: 4px;
      background: rgba(18, 17, 15, 0.28);
    }
    .hero-ctrl button:hover { border-color: var(--maple); color: var(--maple); }
    .progress {
      position: absolute;
      left: 0; right: 0; bottom: 0;
      height: 2px;
      background: rgba(183, 179, 169, 0.25);
      z-index: 5;
    }
    .progress > i {
      display: block;
      height: 100%;
      width: 0;
      background: var(--maple);
    }
    .dots {
      position: absolute;
      left: 36px;
      bottom: 16px;
      z-index: 5;
      display: flex;
      gap: 8px;
    }
    .dots button {
      width: 22px;
      height: 8px;
      border: 0;
      background: rgba(247, 244, 238, 0.28);
      padding: 0;
    }
    .dots button.is-on { background: var(--maple); }
    .hero-note {
      background: var(--paper);
      color: var(--ink);
      padding: 28px 0 8px;
    }
    .hero-note p {
      max-width: 58em;
      font-size: 16px;
      line-height: 1.85;
    }
    #metrics { background: var(--cream); padding-top: 88px; }
    .board {
      border: 1px solid var(--line-strong);
      background: linear-gradient(180deg, #FBF8F2 0%, #F3EEE4 100%);
      display: grid;
      grid-template-columns: repeat(3, 1fr);
    }
    .kpi {
      padding: 32px 28px 28px;
      border-right: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
      min-height: 168px;
    }
    .kpi:nth-child(3n) { border-right: 0; }
    .kpi .label { font-size: 13px; color: rgba(30,35,33,0.62); }
    .kpi .figure {
      margin-top: 12px;
      font-family: var(--font-num);
      font-size: clamp(40px, 5vw, 64px);
      line-height: 1;
      font-weight: 600;
      letter-spacing: -0.02em;
    }
    .kpi .unit { font-size: 16px; margin-left: 6px; color: var(--copper); }
    .kpi .foot { margin-top: 12px; font-size: 12px; color: rgba(30,35,33,0.55); }
    .kpi .spark {
      margin-top: 14px;
      height: 18px;
      background: repeating-linear-gradient(-45deg, rgba(196,163,106,0.35) 0 6px, transparent 6px 10px);
      opacity: 0.7;
      clip-path: polygon(0 70%, 12% 54%, 24% 62%, 38% 36%, 52% 48%, 66% 22%, 80% 30%, 100% 8%, 100% 100%, 0 100%);
    }
    #intro { background: var(--paper); }
    .split {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 56px;
      align-items: center;
    }
    .split.reverse { grid-template-columns: 0.85fr 1.15fr; }
    .photo {
      position: relative;
      min-height: 420px;
    }
    .photo img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      min-height: 420px;
      filter: saturate(0.92);
    }
    .photo-cap {
      position: absolute;
      left: -12px;
      bottom: 18px;
      background: var(--ink);
      color: var(--paper);
      font-size: 12px;
      letter-spacing: 0.12em;
      padding: 8px 12px;
    }
    .spec-list { margin-top: 28px; display: grid; gap: 12px; }
    .spec-list li {
      display: grid;
      grid-template-columns: 96px 1fr;
      gap: 16px;
      padding-bottom: 12px;
      border-bottom: 1px solid var(--line);
      font-size: 14px;
    }
    .spec-list b { color: var(--copper); font-weight: 600; }
    #matrix { background: #EFEBE3; }
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1px;
      background: var(--line-strong);
      border: 1px solid var(--line-strong);
    }
    .mcard {
      background: var(--paper);
      padding: 32px 28px 36px;
      min-height: 230px;
      transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s;
      border: 1px solid transparent;
    }
    .mcard:hover { transform: translateY(-3px); border-color: var(--maple); }
    .mcard .no {
      font-family: var(--font-num);
      font-size: 28px;
      color: var(--maple);
    }
    .mcard h3 { margin-top: 18px; font-size: 22px; }
    .mcard p { margin-top: 12px; font-size: 14px; color: rgba(30,35,33,0.72); max-width: 22em; }
    #machines { background: var(--paper); }
    .machine-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }
    .poster {
      background: var(--char);
      color: var(--paper);
      overflow: hidden;
      border: 1px solid var(--char);
      transition: transform 0.25s var(--ease), border-color 0.25s;
    }
    .poster:hover { transform: translateY(-4px); border-color: var(--maple); }
    .poster img { width: 100%; height: 280px; object-fit: cover; }
    .poster-body { padding: 22px 22px 24px; }
    .poster h3 { font-size: 22px; }
    .poster .scene { margin-top: 8px; font-size: 13px; color: var(--maple); }
    .poster ul { margin-top: 14px; display: grid; gap: 6px; font-size: 13px; color: rgba(247,244,238,0.78); }
    .poster ul li::before { content: "— "; color: var(--maple); }
    .poster .btn { margin-top: 18px; }
    #compare { background: var(--cream); }
    .compare-wrap {
      display: grid;
      grid-template-columns: 1fr 1px 1fr;
      gap: 0 36px;
      border: 1px solid var(--line-strong);
      background: var(--paper);
      padding: 12px 0;
    }
    .compare-rule { background: linear-gradient(180deg, transparent, var(--maple), var(--copper), transparent); }
    .col { padding: 28px 36px; }
    .col h3 { font-size: 20px; margin-bottom: 18px; }
    .row {
      display: grid;
      grid-template-columns: 92px 1fr;
      gap: 12px;
      padding: 14px 0;
      border-bottom: 1px solid var(--line);
      font-size: 15px;
    }
    .row b { font-family: var(--font-num); font-size: 22px; font-weight: 600; }
    .col.human b { color: rgba(30,35,33,0.55); }
    .col.machine b { color: var(--copper); }
    #philosophy {
      background: var(--char);
      color: var(--paper);
      overflow: hidden;
    }
    #philosophy::before {
      content: "";
      position: absolute;
      inset: 0;
      background: url("/assets/images/acc4894b4abedaef.jpg") center/cover no-repeat;
      opacity: 0.18;
      pointer-events: none;
    }
    .philo {
      position: relative;
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 64px;
      align-items: center;
    }
    .philo blockquote {
      margin: 0;
      font-family: var(--font-serif);
      font-size: clamp(30px, 4vw, 48px);
      line-height: 1.28;
      color: #E8D7B0;
    }
    .case {
      border-top: 1px solid rgba(183,179,169,0.28);
      padding: 22px 0;
    }
    .case strong { display: block; font-size: 16px; margin-bottom: 8px; }
    .case p { font-size: 14px; color: rgba(247,244,238,0.76); }
    .case em { font-style: normal; color: var(--maple); }
    #scenes { background: var(--paper); }
    .scene-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 48px; }
    .scene-item {
      display: grid;
      grid-template-columns: 64px 1fr;
      gap: 16px;
      padding: 22px 0;
      border-bottom: 1px solid var(--line);
    }
    .scene-item:nth-child(even) { transform: translateY(18px); }
    .scene-item .no {
      font-family: var(--font-num);
      font-size: 28px;
      color: var(--maple);
    }
    .scene-item h3 { font-size: 20px; }
    .scene-item .fit { margin-top: 4px; font-size: 13px; color: var(--copper); }
    .scene-item p { margin-top: 8px; font-size: 14px; color: rgba(30,35,33,0.72); }
    #milestones { background: #EFEBE3; }
    .timeline {
      position: relative;
      margin-left: 28px;
      border-left: 1px solid var(--copper);
      display: grid;
      gap: 8px;
    }
    .node {
      padding: 8px 0 28px 36px;
      position: relative;
    }
    .node::before {
      content: "";
      position: absolute;
      left: -5px;
      top: 16px;
      width: 9px;
      height: 9px;
      background: var(--paper);
      border: 1px solid var(--copper);
      border-radius: 50%;
    }
    .node h3 { font-size: 20px; }
    .node p { margin-top: 8px; font-size: 14px; color: rgba(30,35,33,0.7); max-width: 46em; }
    #stories { background: var(--paper); }
    .story {
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
      gap: 48px;
      align-items: center;
      padding: 28px 0 56px;
      border-top: 1px solid var(--line);
    }
    .story:nth-child(even) { grid-template-columns: 1.1fr 0.9fr; }
    .story:nth-child(even) .story-photo { order: 2; }
    .story img { width: 100%; height: 360px; object-fit: cover; }
    .role { margin-top: 10px; font-size: 13px; color: var(--copper); letter-spacing: 0.08em; }
    .story h3 { margin-top: 12px; font-size: 26px; }
    .story p { margin-top: 14px; font-size: 15px; }
    #reviews { background: var(--cream); }
    .review-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr;
      gap: 22px;
    }
    .quote {
      border: 1px solid var(--line-strong);
      background: var(--paper);
      padding: 28px 26px;
      min-height: 220px;
    }
    .quote.big {
      grid-row: span 2;
      padding: 36px 32px;
      background: var(--ink);
      color: var(--paper);
      border-color: var(--ink);
    }
    .quote p { font-size: 15px; line-height: 1.8; }
    .quote.big p { font-family: var(--font-serif); font-size: 24px; line-height: 1.55; }
    .who { margin-top: 22px; font-size: 13px; color: rgba(30,35,33,0.62); }
    .quote.big .who { color: var(--maple); }
    #news { background: var(--paper); }
    .news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
    .news-card {
      border: 1px solid var(--line);
      background: var(--cream);
      min-height: 100%;
      display: flex;
      flex-direction: column;
      transition: transform 0.25s var(--ease), border-color 0.25s;
    }
    .news-card:hover { transform: translateY(-3px); border-color: var(--maple); }
    .news-card img { height: 150px; width: 100%; object-fit: cover; }
    .news-card .body { padding: 18px 16px 20px; display: grid; gap: 8px; }
    .tag { font-size: 11px; letter-spacing: 0.14em; color: var(--copper); }
    .news-card h3 { font-size: 17px; }
    .news-card p { font-size: 13px; color: rgba(30,35,33,0.7); }
    .more-link {
      display: inline-flex;
      margin-top: 28px;
      min-height: 44px;
      align-items: center;
      border-bottom: 1px solid var(--copper);
      font-size: 14px;
    }
    #assurance { background: #EFEBE3; }
    .assure {
      display: grid;
      grid-template-columns: 1.3fr 0.7fr;
      gap: 48px;
      align-items: start;
    }
    .check li {
      display: grid;
      grid-template-columns: 22px 1fr;
      gap: 12px;
      padding: 13px 0;
      border-bottom: 1px solid var(--line);
      font-size: 15px;
    }
    .check i {
      width: 14px; height: 14px; margin-top: 6px;
      border: 1px solid var(--copper);
      display: inline-block;
      position: relative;
    }
    .check i::after {
      content: "";
      position: absolute;
      left: 3px; top: 5px;
      width: 7px; height: 3px;
      border-left: 1px solid var(--ink);
      border-bottom: 1px solid var(--ink);
      transform: rotate(-45deg);
    }
    .stamps {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .stamp {
      aspect-ratio: 1;
      border: 1px dashed var(--copper);
      display: grid;
      place-items: center;
      text-align: center;
      padding: 16px;
      color: var(--copper);
      font-family: var(--font-serif);
      font-size: 16px;
      transform: rotate(-6deg);
      background: rgba(247,244,238,0.7);
    }
    .stamp:nth-child(2n) { transform: rotate(5deg); }
    #quick { background: var(--paper); }
    .steps {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1px;
      background: var(--line-strong);
      border: 1px solid var(--line-strong);
      margin-bottom: 28px;
    }
    .step {
      background: var(--cream);
      padding: 28px 24px;
      min-height: 180px;
    }
    .step .no { font-family: var(--font-num); font-size: 42px; color: var(--maple); line-height: 1; }
    .step h3 { margin-top: 12px; font-size: 20px; }
    .step p { margin-top: 8px; font-size: 14px; color: rgba(30,35,33,0.7); }
    .quick-ask { font-size: 14px; }
    .quick-ask a { border-bottom: 1px solid var(--maple); }
    #faq { background: var(--cream); }
    .acc { border-top: 1px solid var(--line-strong); }
    .acc-item { border-bottom: 1px solid var(--line-strong); background: var(--paper); }
    .acc-item.is-open { border-left: 2px solid var(--copper); }
    .acc-btn {
      width: 100%;
      text-align: left;
      min-height: 64px;
      padding: 16px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      font-size: 16px;
      font-weight: 600;
    }
    .acc-btn .plus {
      width: 18px; height: 18px; position: relative; flex: none;
    }
    .acc-btn .plus::before, .acc-btn .plus::after {
      content: "";
      position: absolute;
      background: var(--ink);
      left: 0; right: 0; top: 8px; height: 1px;
    }
    .acc-btn .plus::after { transform: rotate(90deg); }
    .acc-item.is-open .plus::after { opacity: 0; }
    .acc-panel {
      display: none;
      padding: 0 20px 20px;
      color: rgba(30,35,33,0.76);
      font-size: 14px;
      line-height: 1.85;
      max-width: 58em;
    }
    .acc-item.is-open .acc-panel { display: block; }
    #contact { background: var(--paper); padding-bottom: 120px; }
    .contact-grid {
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
      gap: 48px;
      align-items: start;
    }
    .side-meta { margin-top: 28px; display: grid; gap: 10px; font-size: 14px; }
    .side-meta a:hover { color: var(--copper); }
    form {
      display: grid;
      gap: 16px;
      border: 1px solid var(--line-strong);
      padding: 28px;
      background: var(--cream);
    }
    label { display: grid; gap: 6px; font-size: 13px; }
    input, select, textarea {
      width: 100%;
      min-height: 44px;
      border: 0;
      border-bottom: 1px solid var(--line-strong);
      background: transparent;
      padding: 8px 0;
      border-radius: 0;
      font-size: 15px;
      color: var(--ink);
    }
    textarea { min-height: 90px; resize: vertical; }
    input:focus, select:focus, textarea:focus { outline: none; border-bottom-color: var(--copper); }
    .err { color: var(--danger); font-size: 12px; min-height: 16px; }
    .form-success {
      display: none;
      border: 1px solid var(--ok);
      padding: 32px 28px;
      background: #eef4ef;
    }
    .form-success.is-show { display: block; }
    .site-footer {
      background: var(--char);
      color: rgba(247,244,238,0.78);
      padding: 64px 0 28px;
      font-size: 13px;
    }
    .foot-grid {
      display: grid;
      grid-template-columns: 1.3fr 0.9fr 1.1fr 0.9fr;
      gap: 32px;
      padding-bottom: 36px;
      border-bottom: 1px solid rgba(183,179,169,0.18);
    }
    .site-footer h3 {
      color: var(--maple);
      font-size: 16px;
      margin-bottom: 14px;
    }
    .site-footer a { display: inline-block; min-height: 32px; }
    .site-footer a:hover { color: var(--maple); }
    .copy { padding-top: 18px; color: rgba(247,244,238,0.5); display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
    .reveal { opacity: 0; transform: translateY(24px); animation: none; }
    .reveal.in { opacity: 1; transform: none; transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
    .saw {
      height: 8px;
      background: repeating-linear-gradient(135deg, var(--maple) 0 4px, transparent 4px 9px);
      opacity: 0.35;
      width: 120px;
    }
    @media (max-width: 1199px) {
      .hero-stage { grid-template-columns: 1fr; min-height: 0; }
      .hero-side { display: none; }
      .hero-center { min-height: 68vh; aspect-ratio: 16/9; }
      .nav-links { gap: 0; }
      .nav-links a { padding: 0 8px; font-size: 12px; }
    }
    @media (max-width: 991px) {
      .container { width: min(var(--container), calc(100% - 40px)); }
      .sec { padding: 80px 0; }
      .sec-head { grid-template-columns: 1fr; gap: 8px; }
      .split, .split.reverse, .philo, .assure, .contact-grid, .story, .story:nth-child(even) {
        grid-template-columns: 1fr;
      }
      .story:nth-child(even) .story-photo { order: 0; }
      .board, .matrix-grid, .machine-grid, .news-grid, .review-grid, .scene-list, .steps, .foot-grid {
        grid-template-columns: 1fr 1fr;
      }
      .compare-wrap { grid-template-columns: 1fr; gap: 0; }
      .compare-rule { height: 1px; }
      .quote.big { grid-row: auto; }
      .util-mid { display: none; }
    }
    @media (max-width: 767px) {
      .nav-links { display: none; }
      .menu-toggle { display: inline-flex; }
      .hero-center { aspect-ratio: auto; min-height: 78vh; }
      .slide-copy { left: 20px; right: 20px; bottom: 48px; }
      .slide-copy h1, .slide-copy h2 { font-size: 32px; }
      .board, .matrix-grid, .machine-grid, .news-grid, .review-grid, .scene-list, .steps, .foot-grid, .stamps {
        grid-template-columns: 1fr;
      }
      .kpi:nth-child(3n) { border-right: 0; }
      .scene-item:nth-child(even) { transform: none; }
      .hero-actions .btn { width: 100%; }
      .copy { flex-direction: column; }
      .photo, .photo img, .story img { min-height: 240px; height: 240px; }
      .sec { padding: 64px 0; }
      .form { padding: 20px; }
    }
    @media (max-width: 519px) {
      .container { width: calc(100% - 32px); }
      .util-left span:last-child { display: none; }
      .kpi { min-height: 140px; padding: 22px 18px; }
      .mcard { min-height: 0; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { animation: none !important; transition: none !important; }
      .slide img { transform: none !important; }
      .reveal { opacity: 1; transform: none; }
    }