:root {
  --paper: #eee9dc;
  --paper-deep: #ddd4c0;
  --ink: #152c32;
  --ink-soft: #486066;
  --red: #8d302c;
  --red-bright: #aa443a;
  --gold: #bf934e;
  --dark: #10272d;
  --green: #426b5c;
  --line: rgba(21, 44, 50, 0.16);
  --serif: "STSong", "Songti SC", "Noto Serif SC", "Source Han Serif SC", serif;
  --sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--sans);
  background:
    radial-gradient(circle at 15% 20%, rgba(255, 255, 255, 0.78), transparent 25%),
    var(--paper);
  overflow-x: hidden;
}

body.is-locked {
  overflow: hidden;
}

button,
input,
textarea,
select {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  color: inherit;
}

::selection {
  color: #fff;
  background: var(--red);
}

.ambient {
  position: fixed;
  z-index: -1;
  width: 38vw;
  height: 38vw;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.14;
  pointer-events: none;
}

.ambient-a {
  top: 20vh;
  left: -18vw;
  background: #c49c56;
}

.ambient-b {
  right: -20vw;
  bottom: 8vh;
  background: #517e72;
}

.portal {
  position: fixed;
  z-index: 100;
  inset: 0;
  display: grid;
  place-items: center;
  overflow: hidden;
  color: #f7f0df;
  background:
    radial-gradient(circle at 50% 42%, rgba(53, 95, 93, 0.88), transparent 38%),
    linear-gradient(145deg, #0f2d35, #11262d 58%, #091b20);
  transition: transform 1.25s var(--ease), opacity 0.7s ease;
}

.portal::before,
.portal__grain,
.overview__gridline {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.portal::before {
  opacity: 0.15;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, black, transparent 75%);
}

.portal__grain {
  opacity: 0.12;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
}

.portal.is-entered {
  transform: translateY(-102%);
  opacity: 0;
}

.portal__topline {
  position: absolute;
  top: 32px;
  left: 50%;
  display: flex;
  align-items: center;
  gap: 18px;
  transform: translateX(-50%);
  white-space: nowrap;
  font-size: 12px;
  letter-spacing: 0.22em;
  opacity: 0.72;
}

.portal__topline i {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--gold);
}

.portal__content {
  position: relative;
  z-index: 4;
  width: min(860px, calc(100vw - 48px));
  margin-top: -3vh;
  text-align: center;
}

.portal__seal {
  display: grid;
  width: 62px;
  height: 62px;
  margin: 0 auto 22px;
  place-items: center;
  border: 1px solid rgba(205, 168, 100, 0.82);
  color: #e7c684;
  font: 34px/1 var(--serif);
  transform: rotate(-4deg);
  box-shadow: inset 0 0 0 5px rgba(191, 147, 78, 0.08);
}

.portal__eyebrow,
.section-kicker {
  margin: 0 0 16px;
  color: var(--gold);
  font: 500 11px/1.2 var(--sans);
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.portal h1 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 500;
  letter-spacing: 0.08em;
}

.portal h1 span {
  display: block;
  font-size: clamp(66px, 8.3vw, 126px);
  line-height: 0.95;
  text-shadow: 0 12px 50px rgba(0, 0, 0, 0.22);
}

.portal h1 em {
  display: block;
  margin-top: 15px;
  color: #d8bb82;
  font-size: clamp(24px, 3.2vw, 44px);
  font-style: normal;
  letter-spacing: 0.26em;
}

.portal__subtitle {
  margin: 24px 0 32px;
  font: 400 14px/1.8 var(--serif);
  letter-spacing: 0.32em;
  opacity: 0.74;
}

.enter-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 28px;
  min-width: 198px;
  padding: 15px 20px 15px 28px;
  border: 1px solid rgba(231, 198, 132, 0.62);
  border-radius: 100px;
  color: #f8edda;
  background: rgba(255, 255, 255, 0.035);
  cursor: pointer;
  overflow: hidden;
  transition: 0.45s var(--ease);
}

.enter-button::before {
  content: "";
  position: absolute;
  inset: 0 100% 0 0;
  background: var(--gold);
  transition: 0.45s var(--ease);
}

.enter-button span,
.enter-button svg {
  position: relative;
  z-index: 1;
}

.enter-button span {
  font: 500 15px/1 var(--serif);
  letter-spacing: 0.2em;
}

.enter-button svg {
  width: 23px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
}

.enter-button:hover {
  color: #122c32;
  border-color: var(--gold);
  transform: translateY(-3px);
}

.enter-button:hover::before {
  right: 0;
}

.portal__hint {
  margin: 17px 0 0;
  font-size: 10px;
  letter-spacing: 0.2em;
  opacity: 0.42;
}

.portal__landmark {
  position: absolute;
  right: 0;
  bottom: -5px;
  left: 0;
  height: 32vh;
  opacity: 0.52;
}

.portal__landmark svg {
  width: 100%;
  height: 100%;
}

.landmark-fill {
  fill: #0a2025;
  stroke: rgba(208, 174, 105, 0.35);
  stroke-width: 1;
}

.landmark-line {
  fill: none;
  stroke: rgba(223, 193, 132, 0.55);
  stroke-width: 1;
}

.landmark-wave {
  stroke-dasharray: 6 8;
}

.portal__mountain {
  position: absolute;
  width: 78vw;
  height: 47vh;
  opacity: 0.12;
  border: 1px solid rgba(218, 190, 135, 0.6);
  transform: rotate(-10deg) skewX(-22deg);
}

.portal__mountain--back {
  top: 18%;
  left: -18%;
}

.portal__mountain--front {
  right: -31%;
  bottom: 9%;
  transform: rotate(7deg) skewX(-31deg);
}

.site-shell {
  min-height: 100vh;
}

.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 0;
  display: flex;
  width: 100%;
  height: 82px;
  padding: 0 clamp(24px, 5vw, 82px);
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid transparent;
  transition: 0.35s ease;
}

.site-header.is-scrolled {
  height: 68px;
  border-bottom-color: rgba(20, 44, 50, 0.1);
  background: rgba(239, 235, 223, 0.86);
  box-shadow: 0 10px 35px rgba(32, 43, 42, 0.06);
  backdrop-filter: blur(20px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand__mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid var(--red);
  color: var(--red);
  font: 22px/1 var(--serif);
  transform: rotate(-3deg);
}

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand__text strong {
  font: 600 15px/1.2 var(--serif);
  letter-spacing: 0.15em;
}

.brand__text small {
  color: var(--ink-soft);
  font-size: 9px;
  letter-spacing: 0.08em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 3vw, 46px);
}

.main-nav a {
  position: relative;
  padding: 8px 0;
  color: rgba(21, 44, 50, 0.65);
  font-size: 13px;
  transition: 0.25s ease;
}

.main-nav a span {
  margin-right: 5px;
  color: var(--red);
  font: 10px/1 var(--serif);
}

.main-nav a::after {
  content: "";
  position: absolute;
  right: 100%;
  bottom: 0;
  left: 0;
  height: 1px;
  background: var(--red);
  transition: right 0.3s var(--ease);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--ink);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  right: 0;
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 0;
  background: transparent;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 1px;
  margin: 6px auto;
  background: var(--ink);
  transition: 0.3s ease;
}

.section {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
}

.overview {
  display: grid;
  min-height: 100svh;
  padding: 118px clamp(28px, 8vw, 130px) 54px;
  grid-template-columns: minmax(360px, 0.9fr) minmax(480px, 1.1fr);
  align-items: center;
  gap: clamp(38px, 6vw, 100px);
  background:
    radial-gradient(circle at 70% 43%, rgba(191, 147, 78, 0.12), transparent 24%),
    linear-gradient(110deg, rgba(255, 255, 255, 0.54), transparent 58%);
}

.overview__gridline {
  left: 50%;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--line) 18%, var(--line) 82%, transparent);
}

.overview__copy {
  position: relative;
  z-index: 2;
}

.overview h2,
.hall__heading h2,
.closing h2 {
  margin: 0;
  font: 500 clamp(50px, 5.5vw, 86px)/1.18 var(--serif);
  letter-spacing: 0.04em;
}

.overview h2 em,
.closing h2 em {
  color: var(--red);
  font-style: normal;
}

.overview__lead {
  max-width: 580px;
  margin: 32px 0;
  color: var(--ink-soft);
  font: 400 16px/2.05 var(--serif);
  text-align: justify;
}

.overview__actions {
  display: flex;
  align-items: center;
  gap: 30px;
}

.primary-link,
.text-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  cursor: pointer;
}

.primary-link {
  gap: 28px;
  min-width: 176px;
  padding: 15px 21px 15px 24px;
  color: #fff;
  background: var(--red);
  font-size: 13px;
  letter-spacing: 0.12em;
  transition: 0.3s ease;
}

.primary-link span {
  font-size: 18px;
}

.primary-link:hover {
  background: var(--ink);
  transform: translateY(-2px);
}

.text-link {
  padding: 10px 0;
  border-bottom: 1px solid rgba(21, 44, 50, 0.34);
  background: transparent;
  font-size: 12px;
  letter-spacing: 0.08em;
}

.overview__stage {
  position: relative;
  min-height: min(650px, 66vw);
  border-radius: 50%;
}

.overview__stage::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 58%;
  height: 58%;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.42);
  box-shadow: 0 40px 110px rgba(74, 64, 48, 0.11), inset 0 0 0 1px rgba(21, 44, 50, 0.08);
  transform: translate(-50%, -50%);
}

.orbit {
  position: absolute;
  top: 50%;
  left: 50%;
  border: 1px dashed rgba(21, 44, 50, 0.18);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  animation: orbit 26s linear infinite;
}

.orbit::after {
  content: "";
  position: absolute;
  top: -4px;
  left: 50%;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--red);
}

.orbit--one {
  width: 74%;
  height: 74%;
}

.orbit--two {
  width: 93%;
  height: 93%;
  animation-direction: reverse;
  animation-duration: 38s;
}

@keyframes orbit {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

.stage-core {
  position: absolute;
  z-index: 2;
  top: 50%;
  left: 50%;
  display: flex;
  align-items: center;
  gap: 12px;
  transform: translate(-50%, -50%);
}

.stage-core span {
  color: var(--red);
  font: 500 84px/1 var(--serif);
}

.stage-core small {
  padding-left: 12px;
  border-left: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 9px;
  line-height: 1.6;
  letter-spacing: 0.2em;
}

.hall-chip {
  position: absolute;
  z-index: 3;
  display: flex;
  min-width: 190px;
  padding: 16px;
  align-items: center;
  gap: 14px;
  border: 1px solid rgba(21, 44, 50, 0.12);
  background: rgba(246, 242, 232, 0.86);
  box-shadow: 0 20px 50px rgba(46, 53, 50, 0.09);
  backdrop-filter: blur(12px);
  transition: 0.4s var(--ease);
}

.hall-chip:hover {
  z-index: 5;
  border-color: rgba(141, 48, 44, 0.5);
  box-shadow: 0 28px 55px rgba(46, 53, 50, 0.14);
  transform: translateY(-8px);
}

.hall-chip i {
  display: grid;
  width: 52px;
  height: 62px;
  place-items: center;
  border: 1px solid var(--red);
  border-radius: 30px 30px 3px 3px;
  color: var(--red);
  background: #f6f0e2;
  font: normal 28px/1 var(--serif);
}

.hall-chip span {
  font: 600 14px/1.3 var(--serif);
  letter-spacing: 0.08em;
}

.hall-chip small {
  display: block;
  margin-top: 6px;
  color: var(--ink-soft);
  font: 9px/1.2 var(--sans);
  letter-spacing: 0.05em;
}

.hall-chip--data { top: 13%; left: 38%; }
.hall-chip--system { top: 42%; right: -3%; }
.hall-chip--scene { right: 24%; bottom: 7%; }
.hall-chip--happy { bottom: 18%; left: 2%; }

.scroll-cue {
  position: absolute;
  bottom: 28px;
  left: clamp(28px, 5vw, 82px);
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--ink-soft);
  font-size: 8px;
  letter-spacing: 0.24em;
}

.scroll-cue i {
  position: relative;
  width: 72px;
  height: 1px;
  background: rgba(21, 44, 50, 0.3);
  overflow: hidden;
}

.scroll-cue i::after {
  content: "";
  position: absolute;
  inset: 0 100% 0 0;
  background: var(--red);
  animation: scrollLine 2.4s ease-in-out infinite;
}

@keyframes scrollLine {
  50% { right: 0; left: 0; }
  100% { right: 0; left: 100%; }
}

.hall {
  padding: 118px clamp(28px, 7vw, 112px) 82px;
}

.section-index {
  position: absolute;
  top: 76px;
  right: 5vw;
  color: rgba(21, 44, 50, 0.04);
  font: 500 clamp(130px, 17vw, 250px)/1 var(--serif);
  pointer-events: none;
}

.hall__heading {
  position: relative;
  z-index: 2;
  display: flex;
  margin-bottom: 52px;
  align-items: flex-end;
  justify-content: space-between;
  gap: 80px;
}

.hall__heading h2 {
  font-size: clamp(44px, 4.6vw, 70px);
  white-space: nowrap;
}

.hall__heading h2 span {
  color: var(--red);
}

.hall__heading > p {
  max-width: 520px;
  margin: 0 0 5px;
  color: var(--ink-soft);
  font: 400 14px/2 var(--serif);
}

.hall--data {
  background:
    linear-gradient(rgba(238, 233, 220, 0.96), rgba(238, 233, 220, 0.96)),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80'%3E%3Cpath d='M0 40h80M40 0v80' stroke='%23152c32' opacity='.1' stroke-width='.5'/%3E%3C/svg%3E");
}

.data-dashboard {
  display: grid;
  grid-template-columns: 1.35fr 0.65fr;
  gap: 22px;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.metric-card {
  position: relative;
  min-height: 228px;
  padding: 28px;
  border: 1px solid rgba(21, 44, 50, 0.11);
  background: rgba(248, 245, 236, 0.74);
  overflow: hidden;
  transition: 0.35s var(--ease);
}

.metric-card:hover {
  border-color: rgba(141, 48, 44, 0.38);
  box-shadow: 0 22px 50px rgba(42, 51, 47, 0.08);
  transform: translateY(-5px);
}

.metric-card--hero {
  min-height: 270px;
  padding: 34px;
  grid-column: 1 / -1;
  color: #f7f0e2;
  border: 0;
  background: var(--dark);
}

.metric-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.metric-card--hero p {
  color: rgba(255, 255, 255, 0.64);
}

.metric-card > div {
  display: flex;
  margin-top: 23px;
  align-items: baseline;
  gap: 7px;
}

.metric-card strong {
  color: var(--red);
  font: 500 clamp(42px, 4vw, 70px)/1 var(--serif);
  letter-spacing: -0.03em;
}

.metric-card--hero strong {
  color: #e9c782;
  font-size: clamp(76px, 8vw, 122px);
}

.metric-card > div span {
  font: 14px/1 var(--serif);
}

.metric-card small {
  position: absolute;
  bottom: 24px;
  left: 28px;
  color: rgba(72, 96, 102, 0.68);
  font-size: 10px;
}

.metric-card--hero small {
  left: 34px;
  color: rgba(255, 255, 255, 0.38);
}

.metric-card--hero svg {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 46%;
  height: 74%;
}

.metric-card--hero svg path {
  fill: none;
  stroke: #d6a74b;
  stroke-width: 2;
  vector-effect: non-scaling-stroke;
}

.metric-card--hero svg .area {
  fill: rgba(214, 167, 75, 0.08);
  stroke: none;
}

.metric-card__icon {
  display: grid;
  width: 37px;
  height: 37px;
  place-items: center;
  border-radius: 50%;
  color: var(--red);
  background: rgba(141, 48, 44, 0.08);
}

.metric-card__icon svg {
  width: 19px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
}

.chart-card {
  min-height: 516px;
  padding: 32px 28px 24px;
  border: 1px solid rgba(21, 44, 50, 0.11);
  background: rgba(248, 245, 236, 0.72);
}

.chart-card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.chart-card__top p {
  margin: 0 0 7px;
  font: 600 16px/1.3 var(--serif);
}

.chart-card__top small {
  color: var(--ink-soft);
  font-size: 10px;
}

.chart-card__top > span {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--ink-soft);
  font-size: 9px;
}

.chart-card__top > span i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--red);
}

.bar-chart {
  display: flex;
  height: 400px;
  padding-top: 55px;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  background-image: repeating-linear-gradient(to top, rgba(21, 44, 50, 0.08) 0 1px, transparent 1px 74px);
}

.bar-item {
  display: flex;
  width: 17%;
  height: 100%;
  flex-direction: column;
  justify-content: flex-end;
  gap: 12px;
  text-align: center;
}

.bars {
  display: flex;
  height: calc(100% - 36px);
  align-items: flex-end;
  justify-content: center;
  gap: 5px;
}

.bars i,
.bars b {
  display: block;
  width: 17px;
  transform-origin: bottom;
  transform: scaleY(0);
  transition: transform 1.2s var(--ease);
}

.is-visible .bars i,
.is-visible .bars b {
  transform: scaleY(1);
}

.bars i {
  height: var(--before);
  background: rgba(21, 44, 50, 0.16);
}

.bars b {
  height: var(--after);
  background: var(--red);
}

.bar-item span {
  min-height: 25px;
  color: var(--ink-soft);
  font-size: 9px;
}

.hall__footer {
  display: flex;
  margin-top: 28px;
  padding-top: 18px;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
}

.hall__footer > span {
  color: rgba(72, 96, 102, 0.5);
  font-size: 8px;
  letter-spacing: 0.24em;
}

.hall__footer button,
.map-card__detail button {
  display: flex;
  padding: 5px 0;
  align-items: center;
  gap: 22px;
  border: 0;
  border-bottom: 1px solid rgba(21, 44, 50, 0.34);
  background: transparent;
  cursor: pointer;
  font-size: 11px;
}

.hall--system,
.hall--happiness {
  color: #f0eadc;
  background: var(--dark);
}

.hall--system::before,
.hall--happiness::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.14;
  background-image:
    linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(circle at center, black, transparent 86%);
}

.hall--system .section-index,
.hall--happiness .section-index {
  color: rgba(255, 255, 255, 0.035);
}

.hall__heading--light h2 span {
  color: #d6a74b;
}

.hall__heading--light > p {
  color: rgba(240, 234, 220, 0.62);
}

.system-layout {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(30px, 5vw, 80px);
}

.featured-case {
  position: relative;
  min-height: 490px;
  padding: 44px;
  border: 1px solid rgba(223, 190, 125, 0.38);
  background: linear-gradient(145deg, rgba(255,255,255,.07), rgba(255,255,255,.018));
  overflow: hidden;
}

.featured-case::after {
  content: "治";
  position: absolute;
  right: -10px;
  bottom: -72px;
  color: rgba(255, 255, 255, 0.035);
  font: 300px/1 var(--serif);
}

.featured-case__number {
  position: absolute;
  top: 28px;
  right: 32px;
  color: rgba(240, 234, 220, 0.16);
  font: 42px/1 var(--serif);
}

.featured-case__tag {
  display: inline-block;
  margin-bottom: 35px;
  padding: 7px 13px;
  border: 1px solid rgba(214, 167, 75, 0.48);
  color: #dfbb70;
  font-size: 10px;
  letter-spacing: 0.15em;
}

.featured-case h3 {
  max-width: 580px;
  margin: 0;
  font: 500 clamp(28px, 2.5vw, 40px)/1.5 var(--serif);
}

.featured-case > p {
  max-width: 560px;
  margin: 22px 0 32px;
  color: rgba(240, 234, 220, 0.58);
  font: 13px/2 var(--serif);
}

.process-line {
  position: relative;
  z-index: 2;
  display: flex;
  margin-top: 35px;
  align-items: center;
  gap: 10px;
}

.process-line span {
  font-size: 10px;
  text-align: center;
  white-space: nowrap;
}

.process-line span i {
  display: grid;
  width: 34px;
  height: 34px;
  margin: 0 auto 8px;
  place-items: center;
  border: 1px solid rgba(214, 167, 75, 0.52);
  border-radius: 50%;
  color: #dfbb70;
  font: normal 9px/1 var(--sans);
}

.process-line b {
  width: 35px;
  height: 1px;
  margin-bottom: 21px;
  background: rgba(214, 167, 75, 0.25);
}

.featured-case > button {
  position: absolute;
  z-index: 2;
  bottom: 35px;
  left: 44px;
  display: flex;
  padding: 10px 0;
  align-items: center;
  gap: 28px;
  border: 0;
  border-bottom: 1px solid rgba(223, 187, 112, 0.5);
  color: #ead5a7;
  background: transparent;
  cursor: pointer;
  font-size: 11px;
}

.document-stack {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-items: center;
  gap: 16px;
  perspective: 1000px;
}

.document-card {
  position: relative;
  min-height: 414px;
  padding: 36px 24px;
  border: 1px solid rgba(21, 44, 50, 0.12);
  border-radius: 90px 90px 6px 6px;
  color: var(--ink);
  background: #ece3cf;
  box-shadow: 10px 16px 0 rgba(0,0,0,.09);
  cursor: pointer;
  overflow: hidden;
  text-align: left;
  transition: 0.5s var(--ease);
}

.document-card::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid rgba(141, 48, 44, 0.2);
  border-radius: 84px 84px 3px 3px;
  pointer-events: none;
}

.document-card:nth-child(2) {
  min-height: 470px;
  background: #f3ecdc;
}

.document-card:hover {
  z-index: 3;
  color: #f4ecdd;
  background: var(--red);
  box-shadow: 16px 24px 0 rgba(0,0,0,.12);
  transform: translateY(-14px) rotateX(2deg);
}

.document-card__type {
  position: relative;
  z-index: 2;
  display: inline-block;
  margin: 36px 0 26px;
  padding-bottom: 7px;
  border-bottom: 1px solid currentColor;
  color: var(--red);
  font-size: 9px;
  letter-spacing: 0.16em;
}

.document-card:hover .document-card__type {
  color: #e9c782;
}

.document-card strong {
  position: relative;
  z-index: 2;
  display: block;
  font: 500 clamp(20px, 1.5vw, 28px)/1.55 var(--serif);
}

.document-card small {
  position: absolute;
  z-index: 2;
  bottom: 40px;
  left: 24px;
  color: rgba(72, 96, 102, 0.7);
  font-size: 9px;
}

.document-card:hover small {
  color: rgba(255, 255, 255, 0.65);
}

.document-card > i {
  position: absolute;
  right: 20px;
  bottom: 13px;
  color: rgba(21, 44, 50, 0.09);
  font: normal 65px/1 var(--serif);
}

.system-stats {
  position: relative;
  z-index: 2;
  display: grid;
  margin-top: 42px;
  padding-top: 25px;
  grid-template-columns: 0.6fr 0.6fr 0.75fr 1.2fr;
  border-top: 1px solid rgba(240, 234, 220, 0.16);
}

.system-stats > div {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.system-stats strong {
  color: #dfbb70;
  font: 500 38px/1 var(--serif);
}

.system-stats span {
  color: rgba(240, 234, 220, 0.55);
  font-size: 10px;
}

.system-stats p {
  margin: 0;
  text-align: right;
  font: 17px/1.65 var(--serif);
}

.system-stats p em {
  color: #dfbb70;
  font-style: normal;
}

.hall--scene {
  background:
    linear-gradient(rgba(239,235,223,.92),rgba(239,235,223,.92)),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='a'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.5' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23a)' opacity='.12'/%3E%3C/svg%3E");
}

.scene-layout {
  display: grid;
  grid-template-columns: 1.55fr 0.65fr;
  gap: 24px;
}

.compare-card,
.map-card {
  border: 1px solid rgba(21, 44, 50, 0.13);
  background: rgba(247, 244, 235, 0.76);
}

.compare-card__visual {
  position: relative;
  height: 480px;
  overflow: hidden;
  cursor: ew-resize;
}

.scene-image {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.scene-image svg {
  width: 100%;
  height: 100%;
}

.scene-image span {
  position: absolute;
  top: 22px;
  padding: 8px 13px;
  color: #fff;
  background: rgba(16, 39, 45, 0.74);
  backdrop-filter: blur(8px);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.scene-image--after span { right: 22px; }

.scene-image--before {
  width: 52%;
  border-right: 1px solid rgba(255, 255, 255, 0.75);
}

.scene-image--before svg {
  width: calc(100vw - 7vw - 7vw);
  min-width: 890px;
  max-width: none;
}

.scene-image--before span { left: 22px; }

.compare-handle {
  position: absolute;
  z-index: 4;
  top: 50%;
  left: 52%;
  display: flex;
  width: 54px;
  height: 54px;
  align-items: center;
  justify-content: space-around;
  border: 1px solid rgba(255,255,255,.78);
  border-radius: 50%;
  color: #fff;
  background: var(--red);
  box-shadow: 0 9px 24px rgba(0,0,0,.18);
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.compare-handle i {
  font: normal 21px/1 var(--serif);
}

#compareRange {
  position: absolute;
  z-index: 5;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: ew-resize;
}

.compare-card__caption {
  display: flex;
  padding: 25px 28px;
  align-items: center;
  justify-content: space-between;
}

.compare-card__caption span {
  color: var(--red);
  font-size: 9px;
  letter-spacing: 0.12em;
}

.compare-card__caption h3 {
  margin: 8px 0 0;
  font: 500 22px/1.3 var(--serif);
}

.compare-card__caption button {
  display: inline-flex;
  padding: 12px 18px;
  align-items: center;
  gap: 9px;
  border: 1px solid var(--red);
  color: var(--red);
  background: transparent;
  cursor: pointer;
  font-size: 10px;
  transition: 0.25s ease;
}

.compare-card__caption button:hover {
  color: #fff;
  background: var(--red);
}

.compare-card__caption svg {
  width: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
}

.map-card {
  padding: 27px;
}

.map-card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.map-card__top p {
  margin: 0 0 4px;
  color: var(--red);
  font-size: 10px;
  letter-spacing: 0.15em;
}

.map-card__top h3 {
  margin: 0;
  font: 500 20px/1.3 var(--serif);
}

.map-card__top > span {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--ink-soft);
  font-size: 8px;
}

.map-card__top > span i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #5b9d6c;
  box-shadow: 0 0 0 4px rgba(91,157,108,.12);
}

.mianyang-map {
  position: relative;
  height: 380px;
  margin: 14px -5px 0;
}

.mianyang-map > svg {
  width: 100%;
  height: 100%;
  fill: rgba(65, 107, 92, 0.1);
  stroke: rgba(65, 107, 92, 0.55);
  stroke-width: 1.2;
}

.mianyang-map > svg path + path {
  fill: none;
  stroke: rgba(65, 107, 92, 0.35);
}

.map-point {
  position: absolute;
  top: var(--y);
  left: var(--x);
  display: flex;
  padding: 0;
  align-items: center;
  gap: 5px;
  border: 0;
  background: transparent;
  cursor: pointer;
  transform: translate(-50%, -50%);
}

.map-point i {
  width: 9px;
  height: 9px;
  border: 2px solid var(--paper);
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 3px rgba(65,107,92,.18);
  transition: 0.25s ease;
}

.map-point span {
  padding: 3px 5px;
  color: var(--ink-soft);
  background: rgba(247,244,235,.7);
  font-size: 8px;
  white-space: nowrap;
}

.map-point:hover i,
.map-point.active i {
  background: var(--red);
  box-shadow: 0 0 0 6px rgba(141,48,44,.14);
  transform: scale(1.2);
}

.map-point.active span {
  color: var(--red);
}

.map-card__detail {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.map-card__detail > span {
  color: var(--red);
  font: 600 11px/1 var(--serif);
}

.map-card__detail p {
  margin: 9px 0 13px;
  color: var(--ink-soft);
  font-size: 10px;
}

.hall--happiness {
  background: #17272b;
}

.story-wall {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.72fr;
  grid-template-rows: 270px 270px;
  gap: 17px;
}

.story-card {
  position: relative;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.035);
  overflow: hidden;
  cursor: pointer;
}

.story-card--large {
  grid-row: 1 / 3;
}

.story-card--wide {
  grid-column: 2 / 3;
}

.story-card__poster {
  position: relative;
  height: 64%;
  overflow: hidden;
}

.story-card--large .story-card__poster {
  height: 68%;
}

.story-card__poster::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,26,30,.45), transparent 55%);
}

.story-card__poster svg {
  width: 100%;
  height: 100%;
  transition: transform 0.8s var(--ease), filter .4s ease;
}

.story-card:hover .story-card__poster svg {
  filter: saturate(1.18);
  transform: scale(1.045);
}

.play-button {
  position: absolute;
  z-index: 3;
  top: 50%;
  left: 50%;
  display: grid;
  width: 52px;
  height: 52px;
  padding: 0;
  place-items: center;
  border: 1px solid rgba(255,255,255,.65);
  border-radius: 50%;
  background: rgba(16,39,45,.34);
  backdrop-filter: blur(8px);
  cursor: pointer;
  transform: translate(-50%, -50%);
  transition: 0.3s ease;
}

.play-button i {
  width: 0;
  height: 0;
  margin-left: 4px;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-left: 10px solid #fff;
}

.story-card:hover .play-button {
  background: var(--red);
  transform: translate(-50%, -50%) scale(1.08);
}

.story-card__duration {
  position: absolute;
  z-index: 3;
  right: 13px;
  bottom: 10px;
  color: rgba(255,255,255,.75);
  font-size: 8px;
}

.story-card__body {
  padding: 20px 22px;
}

.story-card__body > span {
  color: #d8b66f;
  font-size: 8px;
  letter-spacing: 0.12em;
}

.story-card__body h3 {
  margin: 8px 0 0;
  font: 500 19px/1.4 var(--serif);
}

.story-card--large .story-card__body h3 {
  font-size: 26px;
}

.story-card__body p {
  margin: 8px 0 0;
  color: rgba(240,234,220,.52);
  font: 11px/1.7 var(--serif);
}

.quote-card {
  position: relative;
  grid-row: 1 / 3;
  grid-column: 3 / 4;
  padding: 42px 32px;
  color: var(--ink);
  background: #ded3bb;
  overflow: hidden;
}

.quote-card::after {
  content: "民";
  position: absolute;
  right: -30px;
  bottom: -80px;
  color: rgba(141,48,44,.055);
  font: 260px/1 var(--serif);
}

.quote-card__mark {
  color: var(--red);
  font: 80px/.7 Georgia, serif;
}

.quote-card blockquote {
  position: relative;
  z-index: 2;
  margin: 26px 0 46px;
  font: 500 clamp(20px, 1.8vw, 28px)/1.75 var(--serif);
}

.quote-card__person {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 12px;
}

.avatar {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 50%;
  color: #f0e7d6;
  background: var(--red);
  font: 18px/1 var(--serif);
}

.quote-card__person p {
  display: flex;
  margin: 0;
  flex-direction: column;
  gap: 5px;
}

.quote-card__person strong {
  font: 600 12px/1 var(--serif);
}

.quote-card__person small {
  color: var(--ink-soft);
  font-size: 8px;
}

.quote-card__dots {
  position: absolute;
  z-index: 3;
  bottom: 35px;
  left: 32px;
  display: flex;
  gap: 8px;
}

.quote-card__dots button {
  width: 17px;
  height: 2px;
  padding: 0;
  border: 0;
  background: rgba(21,44,50,.22);
  cursor: pointer;
  transition: width .25s ease, background .25s ease;
}

.quote-card__dots button.active {
  width: 36px;
  background: var(--red);
}

.danmaku-band {
  position: relative;
  z-index: 2;
  width: calc(100% + 14vw);
  margin: 30px -7vw 0;
  padding: 15px 0;
  border-top: 1px solid rgba(255,255,255,.09);
  border-bottom: 1px solid rgba(255,255,255,.09);
  overflow: hidden;
}

.danmaku-track {
  display: flex;
  width: max-content;
  gap: 70px;
  animation: danmaku 34s linear infinite;
}

.danmaku-track span {
  color: rgba(240,234,220,.58);
  font: 12px/1.5 var(--serif);
  white-space: nowrap;
}

.danmaku-track span::before {
  content: "◈";
  margin-right: 14px;
  color: #d6a74b;
}

@keyframes danmaku {
  to { transform: translateX(-50%); }
}

.closing {
  display: flex;
  min-height: 82vh;
  padding: 120px 28px 36px;
  align-items: center;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  background:
    radial-gradient(circle at 50% 44%, rgba(255,255,255,.92), transparent 35%),
    var(--paper);
}

.closing::before,
.closing::after {
  content: "";
  position: absolute;
  width: 37vw;
  height: 37vw;
  border: 1px solid rgba(21,44,50,.09);
  transform: rotate(45deg);
}

.closing::before { left: -27vw; bottom: -11vw; }
.closing::after { top: -16vw; right: -27vw; }

.closing__seal {
  display: grid;
  width: 67px;
  height: 67px;
  margin-bottom: 27px;
  place-items: center;
  border: 2px solid var(--red);
  color: var(--red);
  font: 20px/1 var(--serif);
  transform: rotate(-5deg);
}

.closing h2 {
  position: relative;
  z-index: 2;
}

.closing > p:not(.section-kicker) {
  max-width: 560px;
  margin: 28px 0 34px;
  color: var(--ink-soft);
  font: 14px/2 var(--serif);
}

.supervision-cta {
  position: relative;
  z-index: 3;
  display: flex;
  min-width: min(460px, 90vw);
  padding: 17px 20px;
  align-items: center;
  gap: 16px;
  border: 1px solid rgba(141,48,44,.48);
  color: var(--ink);
  background: rgba(255,255,255,.44);
  cursor: pointer;
  text-align: left;
  transition: 0.35s var(--ease);
}

.supervision-cta:hover {
  color: #fff;
  background: var(--red);
  box-shadow: 0 22px 45px rgba(141,48,44,.18);
  transform: translateY(-4px);
}

.supervision-cta__icon {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border: 1px solid rgba(141,48,44,.4);
}

.supervision-cta:hover .supervision-cta__icon { border-color: rgba(255,255,255,.5); }

.supervision-cta svg {
  width: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
}

.supervision-cta > span:nth-child(2) {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 5px;
}

.supervision-cta small {
  color: var(--red);
  font-size: 9px;
}

.supervision-cta:hover small { color: #f1c983; }

.supervision-cta strong {
  font: 500 15px/1.2 var(--serif);
}

.supervision-cta > i {
  font: normal 22px/1 var(--sans);
}

.closing footer {
  position: absolute;
  right: clamp(28px, 5vw, 80px);
  bottom: 24px;
  left: clamp(28px, 5vw, 80px);
  display: flex;
  padding-top: 16px;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  color: rgba(72,96,102,.56);
  font-size: 8px;
  letter-spacing: 0.08em;
}

.floating-supervision {
  position: fixed;
  z-index: 45;
  right: 25px;
  bottom: 28px;
  display: flex;
  width: 58px;
  height: 78px;
  padding: 10px 0;
  align-items: center;
  flex-direction: column;
  justify-content: center;
  gap: 7px;
  border: 0;
  color: #fff;
  background: var(--red);
  box-shadow: 0 14px 32px rgba(93,35,31,.28);
  cursor: pointer;
  transition: 0.3s var(--ease);
}

.floating-supervision:hover {
  transform: translateY(-5px);
}

.floating-supervision svg {
  width: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
}

.floating-supervision span {
  font-size: 10px;
}

.page-progress {
  position: fixed;
  z-index: 70;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: transparent;
}

.page-progress i {
  display: block;
  width: 0;
  height: 100%;
  background: var(--red);
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.modal {
  width: min(620px, calc(100vw - 34px));
  padding: 44px;
  border: 1px solid rgba(21,44,50,.18);
  color: var(--ink);
  background: #f0eadc;
  box-shadow: 0 30px 100px rgba(10,27,31,.32);
}

.modal::backdrop {
  background: rgba(8,24,28,.72);
  backdrop-filter: blur(9px);
}

.modal[open] {
  animation: modalIn .35s var(--ease);
}

@keyframes modalIn {
  from { opacity: 0; transform: translateY(24px) scale(.98); }
}

.modal__close {
  position: absolute;
  top: 16px;
  right: 18px;
  width: 34px;
  height: 34px;
  border: 0;
  background: transparent;
  cursor: pointer;
  font: 300 27px/1 var(--sans);
}

.modal h2 {
  margin: 0 0 27px;
  font: 500 36px/1.3 var(--serif);
}

.modal__intro {
  margin: -12px 0 24px;
  color: var(--ink-soft);
  font: 12px/1.8 var(--serif);
}

.guide-list {
  display: grid;
  gap: 10px;
}

.guide-list a {
  display: flex;
  padding: 17px;
  align-items: center;
  gap: 17px;
  border: 1px solid var(--line);
  transition: 0.25s ease;
}

.guide-list a:hover {
  color: #fff;
  border-color: var(--red);
  background: var(--red);
  transform: translateX(5px);
}

.guide-list i {
  color: var(--red);
  font: normal 24px/1 var(--serif);
}

.guide-list a:hover i { color: #f0c679; }

.guide-list span {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.guide-list strong {
  font: 500 15px/1.2 var(--serif);
}

.guide-list small {
  color: var(--ink-soft);
  font-size: 9px;
}

.guide-list a:hover small { color: rgba(255,255,255,.66); }

.modal form,
.modal form label {
  display: flex;
  flex-direction: column;
}

.modal form { gap: 19px; }

.modal form label { gap: 8px; }

.modal form label > span {
  font: 500 11px/1 var(--serif);
}

.modal select,
.modal textarea {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid rgba(21,44,50,.18);
  border-radius: 0;
  outline: none;
  color: var(--ink);
  background: rgba(255,255,255,.4);
  resize: vertical;
  transition: border .2s ease;
}

.modal select:focus,
.modal textarea:focus { border-color: var(--red); }

.form-submit {
  display: flex;
  padding: 14px 18px;
  align-items: center;
  justify-content: space-between;
  border: 0;
  color: #fff;
  background: var(--red);
  cursor: pointer;
}

.case-detail-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.case-detail-grid div {
  padding: 20px 16px;
  border-top: 2px solid var(--red);
  background: rgba(255,255,255,.34);
}

.case-detail-grid span {
  display: block;
  margin-bottom: 10px;
  color: var(--red);
  font-size: 9px;
}

.case-detail-grid strong {
  font: 500 15px/1.6 var(--serif);
}

.toast {
  position: fixed;
  z-index: 200;
  bottom: 30px;
  left: 50%;
  min-width: 260px;
  padding: 13px 20px;
  color: #fff;
  background: rgba(16,39,45,.94);
  box-shadow: 0 15px 40px rgba(0,0,0,.18);
  opacity: 0;
  pointer-events: none;
  text-align: center;
  transform: translate(-50%, 20px);
  transition: 0.3s var(--ease);
  font-size: 11px;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (max-width: 1150px) {
  .main-nav { gap: 16px; }
  .main-nav a { font-size: 11px; }
  .overview { grid-template-columns: 0.84fr 1.16fr; padding-inline: 55px; }
  .hall-chip { min-width: 166px; }
  .hall-chip--system { right: -6%; }
  .data-dashboard { grid-template-columns: 1fr; }
  .chart-card { min-height: auto; }
  .bar-chart { height: 320px; }
  .scene-layout { grid-template-columns: 1.35fr .75fr; }
  .compare-card__visual { height: 430px; }
  .system-layout { grid-template-columns: 1fr; }
  .featured-case { min-height: 450px; }
  .document-stack { max-width: 850px; margin: auto; }
}

@media (max-width: 900px) {
  .site-header { height: 70px; padding-inline: 24px; }
  .brand__text small { display: none; }
  .menu-toggle { display: block; cursor: pointer; }
  .main-nav {
    position: fixed;
    top: 69px;
    right: 0;
    left: 0;
    display: grid;
    padding: 28px;
    gap: 12px;
    background: rgba(239,235,223,.97);
    box-shadow: 0 22px 40px rgba(0,0,0,.08);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-12px);
    transition: .3s var(--ease);
  }
  .main-nav.is-open { opacity: 1; pointer-events: auto; transform: translateY(0); }
  .main-nav a { padding: 13px 5px; font-size: 13px; }
  .menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .overview {
    min-height: auto;
    padding: 130px 28px 90px;
    grid-template-columns: 1fr;
  }
  .overview__gridline { display: none; }
  .overview__stage { width: min(680px, 100%); min-height: 600px; margin: auto; }
  .hall-chip--system { right: 1%; }
  .hall__heading { align-items: flex-start; flex-direction: column; gap: 18px; }
  .scene-layout { grid-template-columns: 1fr; }
  .story-wall { grid-template-columns: 1fr 1fr; grid-template-rows: 420px 300px 430px; }
  .story-card--large { grid-row: auto; }
  .story-card--wide { grid-column: auto; }
  .quote-card { grid-column: 1 / 3; grid-row: auto; }
  .system-stats { grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .system-stats p { grid-column: 1/-1; text-align: left; }
}

@media (max-width: 640px) {
  .portal__topline { top: 24px; font-size: 8px; letter-spacing: .12em; gap: 9px; }
  .portal__content { margin-top: -8vh; }
  .portal__seal { width: 52px; height: 52px; font-size: 28px; }
  .portal h1 span { font-size: clamp(52px, 18vw, 80px); }
  .portal h1 em { font-size: 19px; letter-spacing: .12em; }
  .portal__subtitle { font-size: 10px; letter-spacing: .16em; }
  .portal__landmark { height: 28vh; }
  .site-header, .site-header.is-scrolled { height: 62px; }
  .main-nav { top: 61px; }
  .brand__mark { width: 34px; height: 34px; font-size: 19px; }
  .brand__text strong { font-size: 13px; }
  .overview { padding-top: 108px; }
  .overview h2, .closing h2 { font-size: 44px; }
  .overview__lead { font-size: 14px; line-height: 1.9; text-align: left; }
  .overview__actions { align-items: flex-start; flex-direction: column; gap: 16px; }
  .overview__stage { min-height: 500px; }
  .stage-core span { font-size: 65px; }
  .hall-chip { min-width: 145px; padding: 11px; gap: 9px; }
  .hall-chip i { width: 42px; height: 50px; font-size: 23px; }
  .hall-chip span { font-size: 11px; }
  .hall-chip--data { top: 11%; left: 29%; }
  .hall-chip--system { top: 38%; right: -2%; }
  .hall-chip--scene { right: 16%; bottom: 8%; }
  .hall-chip--happy { bottom: 25%; left: -1%; }
  .hall { padding: 94px 20px 65px; }
  .hall__heading { margin-bottom: 34px; }
  .hall__heading h2 { font-size: 40px; }
  .hall__heading > p { font-size: 12px; }
  .section-index { top: 65px; font-size: 120px; }
  .metric-grid { grid-template-columns: 1fr; }
  .metric-card--hero { min-height: 250px; }
  .metric-card { min-height: 190px; }
  .metric-card--hero svg { width: 80%; opacity: .55; }
  .chart-card { padding-inline: 18px; }
  .bar-chart { height: 280px; gap: 5px; }
  .bars i, .bars b { width: 10px; }
  .bar-item span { font-size: 8px; }
  .hall__footer { align-items: flex-start; flex-direction: column; gap: 17px; }
  .featured-case { min-height: 570px; padding: 30px 25px; }
  .featured-case h3 { font-size: 27px; }
  .featured-case > button { left: 25px; }
  .process-line { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
  .process-line b { display: none; }
  .document-stack { grid-template-columns: 1fr; }
  .document-card, .document-card:nth-child(2) { min-height: 290px; border-radius: 70px 70px 5px 5px; }
  .document-card__type { margin-top: 25px; }
  .system-stats { grid-template-columns: 1fr 1fr; }
  .system-stats > div:nth-child(3) { grid-column: 1/-1; }
  .compare-card__visual { height: 310px; }
  .scene-image--before svg { min-width: 560px; }
  .compare-card__caption { align-items: flex-start; flex-direction: column; gap: 19px; }
  .map-card { padding: 22px 15px; }
  .mianyang-map { height: 340px; }
  .story-wall { display: flex; flex-direction: column; }
  .story-card { min-height: 320px; }
  .story-card--large { min-height: 470px; }
  .quote-card { min-height: 430px; }
  .danmaku-band { width: calc(100% + 40px); margin-inline: -20px; }
  .closing { min-height: 90vh; padding-bottom: 90px; }
  .closing footer { align-items: center; flex-direction: column; gap: 9px; text-align: center; }
  .floating-supervision { right: 15px; bottom: 18px; width: 50px; height: 68px; }
  .modal { padding: 38px 23px 28px; }
  .modal h2 { font-size: 29px; }
  .case-detail-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}