:root {
  --ink: #101310;
  --ink-2: #171d1a;
  --ink-3: #202824;
  --paper: #f5f2ea;
  --paper-2: #e9e3d7;
  --paper-3: #dcd4c4;
  --gold: #b59a62;
  --gold-2: #d3bf91;
  --gold-3: #8f7441;
  --sage: #6f817b;
  --muted: #9da7a2;
  --muted-dark: #5f6964;
  --danger: #9a5949;
  --success: #506f60;
  --line-dark: rgba(245, 242, 234, 0.14);
  --line-light: rgba(16, 19, 16, 0.14);
  --shadow: 0 26px 90px rgba(10, 14, 12, 0.16);
  --radius: 22px;
  --radius-sm: 12px;
  --container: 1240px;
  --header-height: 80px;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.gate-open {
  overflow: hidden;
}

html[lang="zh-CN"] body {
  font-family: "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

html[lang="zh-CN"] .display-title,
html[lang="zh-CN"] .section-title,
html[lang="zh-CN"] .card-title,
html[lang="zh-CN"] .legal-title,
html[lang="zh-CN"] .gate-card h1 {
  font-family: "Noto Serif CJK SC", "Songti SC", serif;
  letter-spacing: -0.045em;
}

html[lang="zh-CN"] .display-title {
  font-size: clamp(62px, 6.3vw, 88px);
  line-height: 1.06;
}

html[lang="zh-CN"] .section-title {
  line-height: 1.12;
}

::selection {
  background: var(--gold);
  color: var(--ink);
}

img,
svg {
  display: block;
  max-width: 100%;
}

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

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

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

p,
h1,
h2,
h3,
h4,
ul {
  margin-top: 0;
}

button {
  cursor: pointer;
}

.container {
  width: min(calc(100% - 48px), var(--container));
  margin-inline: auto;
}

.narrow {
  width: min(calc(100% - 48px), 840px);
  margin-inline: auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

#scrollProgress {
  position: fixed;
  z-index: 2000;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--gold);
  transition: width 80ms linear;
}

/* Header */
.site-header {
  position: fixed;
  z-index: 1000;
  top: 0;
  right: 0;
  left: 0;
  height: var(--header-height);
  color: var(--paper);
  background: rgba(16, 19, 16, 0.52);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(16px);
  transition: background 220ms ease, border-color 220ms ease, height 220ms ease;
}

.site-header.scrolled {
  height: 70px;
  background: rgba(16, 19, 16, 0.92);
  border-color: var(--line-dark);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.brand img {
  width: 164px;
  height: auto;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.4vw, 36px);
  margin-left: auto;
}

.main-nav a {
  position: relative;
  color: rgba(245, 242, 234, 0.82);
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0.02em;
  transition: color 180ms ease;
}

.main-nav a::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 1px;
  content: "";
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--paper);
}

.main-nav a:hover::after,
.main-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

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

.lang-switch {
  display: inline-flex;
  align-items: center;
  padding: 4px;
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
}

.lang-switch button {
  min-width: 34px;
  padding: 6px 8px;
  color: rgba(245, 242, 234, 0.62);
  font-size: 12px;
  font-weight: 750;
  border: 0;
  border-radius: 999px;
  background: transparent;
}

.lang-switch button.active {
  color: var(--ink);
  background: var(--gold);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  color: var(--paper);
  border: 1px solid var(--line-dark);
  border-radius: 50%;
  background: transparent;
}

.menu-toggle span,
.menu-toggle::before,
.menu-toggle::after {
  display: block;
  width: 18px;
  height: 1px;
  margin: 4px auto;
  content: "";
  background: currentColor;
  transition: transform 180ms ease, opacity 180ms ease;
}

.menu-toggle.active span {
  opacity: 0;
}

.menu-toggle.active::before {
  transform: translateY(5px) rotate(45deg);
}

.menu-toggle.active::after {
  transform: translateY(-5px) rotate(-45deg);
}

/* Buttons */
.btn {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 20px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--gold);
  box-shadow: none;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease, border-color 180ms ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
  background: var(--gold-2);
}

.btn-sm {
  min-height: 40px;
  padding: 9px 16px;
  font-size: 12px;
}

.btn-outline {
  color: var(--paper);
  border-color: rgba(245, 242, 234, 0.32);
  background: transparent;
}

.btn-outline:hover,
.btn-outline:focus-visible {
  color: var(--ink);
  border-color: var(--paper);
  background: var(--paper);
}

.btn-dark {
  color: var(--paper);
  background: var(--ink);
}

.btn-dark:hover,
.btn-dark:focus-visible {
  background: var(--ink-3);
}

.btn-arrow::after {
  font-size: 16px;
  content: "↗";
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--gold-3);
  font-size: 13px;
  font-weight: 800;
}

.link-arrow::after {
  content: "↗";
  transition: transform 180ms ease;
}

.link-arrow:hover::after {
  transform: translate(2px, -2px);
}

/* Typography and shared section styles */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  color: var(--gold-3);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 30px;
  height: 1px;
  content: "";
  background: currentColor;
}

.eyebrow.light {
  color: var(--gold-2);
}

.display-title,
.section-title,
.card-title,
.legal-title {
  font-family: Georgia, "Times New Roman", "Songti SC", serif;
  font-weight: 400;
  letter-spacing: -0.035em;
}

.display-title {
  max-width: 880px;
  margin-bottom: 26px;
  color: var(--paper);
  font-size: clamp(54px, 7.2vw, 104px);
  line-height: 0.96;
}

.display-title em {
  color: var(--gold-2);
  font-style: normal;
}

.section-title {
  max-width: 800px;
  margin-bottom: 20px;
  color: var(--ink);
  font-size: clamp(40px, 5.2vw, 72px);
  line-height: 1.02;
}

.section-title.light {
  color: var(--paper);
}

.section-lead {
  max-width: 720px;
  margin-bottom: 0;
  color: var(--muted-dark);
  font-size: clamp(17px, 1.7vw, 21px);
  line-height: 1.65;
}

.section-lead.light {
  color: rgba(245, 242, 234, 0.68);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 58px;
}

.section-head .section-lead {
  max-width: 510px;
}

.section {
  position: relative;
  padding: 120px 0;
}

.section-dark {
  color: var(--paper);
  background: var(--ink);
}

.section-soft {
  background: var(--paper-2);
}

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 680ms ease, transform 680ms ease;
}

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

/* Access gate */
.access-gate {
  position: fixed;
  z-index: 3000;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 28px;
  color: var(--paper);
  background:
    radial-gradient(circle at 15% 15%, rgba(181, 154, 98, 0.2), transparent 28%),
    radial-gradient(circle at 86% 76%, rgba(74, 103, 89, 0.22), transparent 32%),
    var(--ink);
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms ease;
}

.access-gate.show {
  opacity: 1;
  pointer-events: auto;
}

.gate-card {
  width: min(100%, 690px);
  padding: clamp(30px, 6vw, 58px);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  background: rgba(25, 31, 28, 0.86);
  box-shadow: 0 40px 120px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(18px);
}

.gate-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 40px;
}

.gate-logo {
  width: 164px;
}

.gate-card h1 {
  margin-bottom: 20px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(34px, 5vw, 56px);
  font-weight: 400;
  line-height: 1.06;
  letter-spacing: -0.03em;
}

.gate-card > p {
  margin-bottom: 30px;
  color: rgba(245, 242, 234, 0.7);
  font-size: 16px;
}

.gate-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 26px;
}

.gate-note {
  padding-top: 22px;
  color: rgba(245, 242, 234, 0.5);
  font-size: 12px;
  border-top: 1px solid var(--line-dark);
}

/* Hero */
.hero {
  position: relative;
  min-height: 930px;
  overflow: hidden;
  color: var(--paper);
  background:
    radial-gradient(circle at 86% 16%, rgba(181, 154, 98, 0.19), transparent 24%),
    radial-gradient(circle at 77% 85%, rgba(87, 118, 102, 0.18), transparent 30%),
    var(--ink);
}

.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background-image:
    linear-gradient(rgba(245, 242, 234, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245, 242, 234, 0.045) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7), transparent 88%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  min-height: 930px;
  grid-template-columns: minmax(0, 1.15fr) minmax(360px, 0.85fr);
  align-items: center;
  gap: clamp(40px, 6vw, 100px);
  padding-top: 128px;
  padding-bottom: 110px;
}

.hero-copy {
  position: relative;
  z-index: 3;
}

.hero-lead {
  max-width: 690px;
  margin-bottom: 34px;
  color: rgba(245, 242, 234, 0.72);
  font-size: clamp(18px, 1.7vw, 23px);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.hero-disclaimer {
  display: flex;
  max-width: 680px;
  align-items: flex-start;
  gap: 12px;
  color: rgba(245, 242, 234, 0.48);
  font-size: 12px;
  line-height: 1.55;
}

.hero-disclaimer::before {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  margin-top: 6px;
  content: "";
  border-radius: 50%;
  background: var(--gold);
}

.hero-visual {
  position: relative;
  min-height: 630px;
}

.architecture-frame {
  position: absolute;
  top: 14px;
  right: 0;
  width: min(100%, 520px);
  height: 620px;
  overflow: hidden;
  border: 1px solid var(--line-dark);
  border-radius: 260px 260px 22px 22px;
  background:
    linear-gradient(155deg, rgba(245, 242, 234, 0.08), rgba(245, 242, 234, 0.01)),
    #17201c;
  box-shadow: 0 50px 100px rgba(0, 0, 0, 0.28);
}

.architecture-frame::before {
  position: absolute;
  inset: 0;
  content: "";
  background:
    radial-gradient(circle at 55% 20%, rgba(211, 191, 145, 0.22), transparent 27%),
    linear-gradient(180deg, transparent 55%, rgba(16, 19, 16, 0.7));
}

.architecture-lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.architecture-caption {
  position: absolute;
  right: 28px;
  bottom: 26px;
  left: 28px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
}

.architecture-caption strong {
  display: block;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 30px;
  font-weight: 400;
  line-height: 1.05;
}

.architecture-caption span {
  color: rgba(245, 242, 234, 0.55);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-metric {
  position: absolute;
  z-index: 4;
  width: 190px;
  padding: 22px;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-sm);
  background: rgba(16, 19, 16, 0.78);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(14px);
}

.hero-metric.metric-one {
  top: 94px;
  left: -36px;
}

.hero-metric.metric-two {
  right: -26px;
  bottom: 128px;
}

.hero-metric .metric-value {
  display: block;
  margin-bottom: 5px;
  color: var(--gold-2);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 45px;
  line-height: 1;
}

.hero-metric .metric-label {
  display: block;
  color: var(--paper);
  font-size: 12px;
  font-weight: 750;
  line-height: 1.45;
}

.hero-metric small {
  display: block;
  margin-top: 8px;
  color: rgba(245, 242, 234, 0.46);
  font-size: 10px;
  line-height: 1.4;
}

.hero-foot {
  position: absolute;
  z-index: 4;
  right: 0;
  bottom: 0;
  left: 0;
  border-top: 1px solid var(--line-dark);
}

.hero-foot-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.hero-foot-item {
  min-height: 98px;
  padding: 22px 28px;
  border-right: 1px solid var(--line-dark);
}

.hero-foot-item:last-child {
  border-right: 0;
}

.hero-foot-item strong {
  display: block;
  margin-bottom: 3px;
  color: var(--paper);
  font-size: 13px;
}

.hero-foot-item span {
  color: rgba(245, 242, 234, 0.48);
  font-size: 12px;
}

/* Strategy cards */
.strategy-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.strategy-card {
  position: relative;
  min-height: 710px;
  overflow: hidden;
  border: 1px solid var(--line-light);
  border-radius: var(--radius);
  background: var(--paper-2);
  box-shadow: var(--shadow);
}

.strategy-card.dark {
  color: var(--paper);
  border-color: var(--line-dark);
  background: var(--ink-2);
}

.strategy-image {
  position: relative;
  aspect-ratio: 16 / 9.8;
  overflow: hidden;
}

.strategy-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 600ms ease;
}

.strategy-card:hover .strategy-image img {
  transform: scale(1.02);
}

.strategy-content {
  padding: clamp(28px, 4vw, 46px);
}

.strategy-index {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  color: var(--gold-3);
  font-size: 11px;
  font-weight: 850;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.dark .strategy-index {
  color: var(--gold-2);
}

.strategy-tag {
  padding: 5px 10px;
  border: 1px solid currentColor;
  border-radius: 999px;
  letter-spacing: 0.08em;
}

.card-title {
  margin-bottom: 18px;
  font-size: clamp(34px, 4vw, 54px);
  line-height: 1.05;
}

.strategy-content > p {
  margin-bottom: 30px;
  color: var(--muted-dark);
  font-size: 16px;
}

.dark .strategy-content > p {
  color: rgba(245, 242, 234, 0.64);
}

.strategy-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin-bottom: 30px;
  overflow: hidden;
  border: 1px solid var(--line-light);
  border-radius: var(--radius-sm);
  background: var(--line-light);
}

.dark .strategy-metrics {
  border-color: var(--line-dark);
  background: var(--line-dark);
}

.strategy-metric {
  min-height: 120px;
  padding: 20px;
  background: var(--paper);
}

.dark .strategy-metric {
  background: #1c2420;
}

.strategy-metric strong {
  display: block;
  margin-bottom: 6px;
  color: var(--gold-3);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 38px;
  font-weight: 400;
  line-height: 1;
}

.dark .strategy-metric strong {
  color: var(--gold-2);
}

.strategy-metric span {
  display: block;
  color: var(--muted-dark);
  font-size: 11px;
  font-weight: 750;
  line-height: 1.4;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.dark .strategy-metric span {
  color: rgba(245, 242, 234, 0.5);
}

.check-list {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 0 0 32px;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 26px;
  color: var(--muted-dark);
  font-size: 14px;
}

.dark .check-list li {
  color: rgba(245, 242, 234, 0.65);
}

.check-list li::before {
  position: absolute;
  top: 9px;
  left: 0;
  width: 10px;
  height: 10px;
  content: "";
  border: 1px solid var(--gold);
  transform: rotate(45deg);
}

.strategy-footnote {
  padding-top: 22px;
  color: var(--muted-dark);
  font-size: 11px;
  border-top: 1px solid var(--line-light);
}

.dark .strategy-footnote {
  color: rgba(245, 242, 234, 0.42);
  border-color: var(--line-dark);
}

/* Return engine */
.engine-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.engine-item {
  min-height: 320px;
  padding: 38px 30px;
  border-right: 1px solid var(--line-dark);
}

.engine-item:last-child {
  border-right: 0;
}

.engine-number {
  display: inline-grid;
  width: 46px;
  height: 46px;
  place-items: center;
  margin-bottom: 50px;
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  border-radius: 50%;
  background: var(--gold);
}

.engine-item h3 {
  margin-bottom: 14px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 27px;
  font-weight: 400;
  line-height: 1.15;
}

.engine-item p {
  margin-bottom: 0;
  color: rgba(245, 242, 234, 0.55);
  font-size: 14px;
}

/* Geography */
.geo-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(420px, 1.18fr);
  align-items: center;
  gap: clamp(50px, 8vw, 110px);
}

.zone-list {
  display: grid;
  gap: 16px;
  margin-top: 40px;
}

.zone-item {
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: 16px;
  padding: 18px 0;
  border-top: 1px solid var(--line-light);
}

.zone-number {
  color: var(--gold-3);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 18px;
}

.zone-item strong {
  display: block;
  margin-bottom: 3px;
  font-size: 15px;
}

.zone-item p {
  margin-bottom: 0;
  color: var(--muted-dark);
  font-size: 13px;
}

.map-card {
  padding: 18px;
  border: 1px solid var(--line-light);
  border-radius: var(--radius);
  background: var(--paper-2);
  box-shadow: var(--shadow);
}

.map-card img {
  width: 100%;
  border-radius: 16px;
}

.map-note {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 8px 4px;
  color: var(--muted-dark);
  font-size: 11px;
}

.map-note::before {
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  margin-top: 6px;
  content: "";
  border-radius: 50%;
  background: var(--gold);
}

/* Integrated platform */
.platform-wrap {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  align-items: center;
  gap: clamp(50px, 8vw, 110px);
}

.platform-loop {
  position: relative;
  display: grid;
  min-height: 560px;
  place-items: center;
}

.loop-ring {
  position: absolute;
  width: 420px;
  height: 420px;
  border: 1px solid rgba(181, 154, 98, 0.5);
  border-radius: 50%;
}

.loop-ring::before,
.loop-ring::after {
  position: absolute;
  inset: 42px;
  content: "";
  border: 1px solid var(--line-dark);
  border-radius: 50%;
}

.loop-ring::after {
  inset: 100px;
}

.loop-centre {
  position: relative;
  z-index: 3;
  display: grid;
  width: 160px;
  height: 160px;
  place-items: center;
  text-align: center;
  border: 1px solid var(--line-dark);
  border-radius: 50%;
  background: #19201d;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.28);
}

.loop-centre strong {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 30px;
  font-weight: 400;
  line-height: 1;
}

.loop-centre span {
  display: block;
  margin-top: 7px;
  color: rgba(245, 242, 234, 0.48);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.loop-node {
  position: absolute;
  z-index: 4;
  display: grid;
  width: 118px;
  height: 118px;
  place-items: center;
  padding: 12px;
  color: var(--ink);
  text-align: center;
  font-size: 12px;
  font-weight: 800;
  line-height: 1.3;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.loop-node.n1 { top: 12px; left: calc(50% - 59px); }
.loop-node.n2 { top: 128px; right: 4px; }
.loop-node.n3 { right: 64px; bottom: 24px; }
.loop-node.n4 { bottom: 24px; left: 64px; }
.loop-node.n5 { top: 128px; left: 4px; }

.platform-points {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 42px;
}

.platform-point {
  padding-top: 18px;
  border-top: 1px solid var(--line-dark);
}

.platform-point strong {
  display: block;
  margin-bottom: 6px;
  color: var(--paper);
  font-size: 14px;
}

.platform-point span {
  color: rgba(245, 242, 234, 0.5);
  font-size: 12px;
}

/* Calculator */
.calculator-card {
  display: grid;
  overflow: hidden;
  grid-template-columns: 0.92fr 1.08fr;
  border: 1px solid var(--line-light);
  border-radius: var(--radius);
  background: var(--paper-2);
  box-shadow: var(--shadow);
}

.calculator-copy {
  padding: clamp(34px, 5vw, 64px);
  background: var(--paper-2);
}

.calculator-form {
  display: grid;
  gap: 20px;
  padding: clamp(34px, 5vw, 64px);
  color: var(--paper);
  background: var(--ink-2);
}

.field-group {
  display: grid;
  gap: 9px;
}

.field-group label {
  color: rgba(245, 242, 234, 0.62);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.field-group input,
.field-group select,
.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  min-height: 52px;
  padding: 13px 15px;
  color: inherit;
  border: 1px solid var(--line-dark);
  border-radius: 8px;
  outline: none;
  background: rgba(255, 255, 255, 0.035);
  transition: border-color 180ms ease, background 180ms ease;
}

.field-group input:focus,
.field-group select:focus,
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--gold);
  background: rgba(255, 255, 255, 0.06);
}

.field-group select,
.contact-form select {
  color-scheme: dark;
}

.calc-result {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  overflow: hidden;
  margin-top: 8px;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-sm);
  background: var(--line-dark);
}

.calc-result > div {
  padding: 22px;
  background: #1d2521;
}

.calc-result span {
  display: block;
  margin-bottom: 7px;
  color: rgba(245, 242, 234, 0.46);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.calc-result strong {
  color: var(--gold-2);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 400;
  line-height: 1;
}

.calc-note {
  margin: 0;
  color: rgba(245, 242, 234, 0.4);
  font-size: 11px;
}

/* Pipeline */
.pipeline-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.pipeline-card {
  position: relative;
  min-height: 440px;
  overflow: hidden;
  padding: 28px;
  border: 1px solid var(--line-light);
  border-radius: var(--radius);
  background: var(--paper-2);
}

.pipeline-card.featured {
  color: var(--paper);
  border-color: var(--line-dark);
  background: var(--ink-2);
}

.pipeline-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 76px;
  padding: 6px 10px;
  color: var(--gold-3);
  font-size: 10px;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: 1px solid currentColor;
  border-radius: 999px;
}

.featured .pipeline-status {
  color: var(--gold-2);
}

.pipeline-status::before {
  width: 6px;
  height: 6px;
  content: "";
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 5px rgba(181, 154, 98, 0.12);
}

.pipeline-card h3 {
  margin-bottom: 16px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 34px;
  font-weight: 400;
  line-height: 1.08;
}

.pipeline-card p {
  color: var(--muted-dark);
  font-size: 14px;
}

.featured p {
  color: rgba(245, 242, 234, 0.58);
}

.pipeline-meta {
  position: absolute;
  right: 28px;
  bottom: 28px;
  left: 28px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid var(--line-light);
}

.featured .pipeline-meta {
  border-color: var(--line-dark);
}

.pipeline-meta span {
  color: var(--muted-dark);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.featured .pipeline-meta span {
  color: rgba(245, 242, 234, 0.4);
}

.pipeline-meta strong {
  display: block;
  margin-top: 4px;
  color: var(--ink);
  font-size: 13px;
  letter-spacing: normal;
  text-transform: none;
}

.featured .pipeline-meta strong {
  color: var(--paper);
}

/* Governance */
.governance-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(0, 1.25fr);
  gap: clamp(50px, 8vw, 110px);
}

.governance-list {
  border-top: 1px solid var(--line-dark);
}

.governance-item {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 22px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line-dark);
}

.governance-icon {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  border-radius: 50%;
  background: var(--gold);
}

.governance-item h3 {
  margin-bottom: 6px;
  font-size: 16px;
}

.governance-item p {
  margin-bottom: 0;
  color: rgba(245, 242, 234, 0.5);
  font-size: 13px;
}

/* Eligibility */
.eligibility-card {
  position: relative;
  overflow: hidden;
  padding: clamp(40px, 7vw, 90px);
  color: var(--paper);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 83% 18%, rgba(181, 154, 98, 0.22), transparent 24%),
    radial-gradient(circle at 20% 86%, rgba(77, 104, 91, 0.24), transparent 30%),
    var(--ink-2);
  box-shadow: var(--shadow);
}

.eligibility-card::after {
  position: absolute;
  top: -140px;
  right: -100px;
  width: 420px;
  height: 420px;
  content: "";
  border: 1px solid rgba(181, 154, 98, 0.28);
  border-radius: 50%;
}

.eligibility-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: end;
  gap: 80px;
}

.eligibility-tests {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.eligibility-test {
  min-height: 150px;
  padding: 22px;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.035);
}

.eligibility-test strong {
  display: block;
  margin-bottom: 7px;
  color: var(--gold-2);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 28px;
  font-weight: 400;
}

.eligibility-test span {
  color: rgba(245, 242, 234, 0.56);
  font-size: 12px;
}

.eligibility-note {
  grid-column: 1 / -1;
  margin: 4px 0 0;
  color: rgba(245, 242, 234, 0.38);
  font-size: 10px;
}

/* FAQ */
.faq-list {
  border-top: 1px solid var(--line-light);
}

.faq-item {
  border-bottom: 1px solid var(--line-light);
}

.faq-question {
  display: grid;
  width: 100%;
  grid-template-columns: 42px 1fr 40px;
  align-items: center;
  gap: 20px;
  padding: 28px 0;
  color: var(--ink);
  text-align: left;
  border: 0;
  background: transparent;
}

.faq-index {
  color: var(--gold-3);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 17px;
}

.faq-question strong {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(21px, 2.4vw, 29px);
  font-weight: 400;
  line-height: 1.2;
}

.faq-plus {
  position: relative;
  display: block;
  width: 32px;
  height: 32px;
  border: 1px solid var(--line-light);
  border-radius: 50%;
}

.faq-plus::before,
.faq-plus::after {
  position: absolute;
  top: 15px;
  left: 8px;
  width: 14px;
  height: 1px;
  content: "";
  background: var(--ink);
  transition: transform 180ms ease;
}

.faq-plus::after {
  transform: rotate(90deg);
}

.faq-item.open .faq-plus::after {
  transform: rotate(0);
}

.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 260ms ease;
}

.faq-answer > div {
  overflow: hidden;
}

.faq-answer p {
  max-width: 800px;
  padding: 0 62px 0;
  margin-bottom: 0;
  color: var(--muted-dark);
  font-size: 15px;
  opacity: 0;
  transition: padding 260ms ease, opacity 260ms ease;
}

.faq-item.open .faq-answer {
  grid-template-rows: 1fr;
}

.faq-item.open .faq-answer p {
  padding-bottom: 30px;
  opacity: 1;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(420px, 1.25fr);
  gap: clamp(50px, 8vw, 100px);
}

.contact-details {
  display: grid;
  gap: 20px;
  margin-top: 42px;
}

.contact-detail {
  padding-top: 16px;
  border-top: 1px solid var(--line-dark);
}

.contact-detail span {
  display: block;
  margin-bottom: 5px;
  color: rgba(245, 242, 234, 0.42);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.contact-detail strong,
.contact-detail a {
  color: var(--paper);
  font-size: 14px;
}

.contact-form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  padding: clamp(28px, 4vw, 44px);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.035);
}

.contact-form .field-group.full,
.contact-form .consent-row,
.contact-form .form-actions {
  grid-column: 1 / -1;
}

.contact-form textarea {
  min-height: 132px;
  resize: vertical;
}

.consent-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: rgba(245, 242, 234, 0.48);
  font-size: 11px;
}

.consent-row input {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  margin-top: 2px;
  accent-color: var(--gold);
}

.form-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 4px;
}

.form-status {
  margin: 0;
  color: var(--gold-2);
  font-size: 12px;
}

/* Footer */
.site-footer {
  color: var(--paper);
  background: #0a0d0b;
  border-top: 1px solid var(--line-dark);
}

.footer-main {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr 0.9fr;
  gap: 60px;
  padding: 70px 0 50px;
}

.footer-brand img {
  width: 170px;
  margin-bottom: 24px;
}

.footer-brand p {
  max-width: 410px;
  color: rgba(245, 242, 234, 0.48);
  font-size: 13px;
}

.footer-column h3 {
  margin-bottom: 18px;
  color: rgba(245, 242, 234, 0.42);
  font-size: 10px;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.footer-column a,
.footer-column span {
  display: block;
  margin-bottom: 10px;
  color: rgba(245, 242, 234, 0.72);
  font-size: 13px;
}

.footer-column a:hover {
  color: var(--gold-2);
}

.footer-legal {
  padding: 26px 0 34px;
  color: rgba(245, 242, 234, 0.34);
  font-size: 10px;
  line-height: 1.6;
  border-top: 1px solid var(--line-dark);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-top: 20px;
  margin-top: 20px;
  border-top: 1px solid var(--line-dark);
}

.footer-bottom-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom-links a {
  color: rgba(245, 242, 234, 0.42);
}

/* Risk ribbon */
.risk-ribbon {
  position: fixed;
  z-index: 900;
  right: 18px;
  bottom: 18px;
  display: flex;
  max-width: 430px;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 16px;
  color: rgba(245, 242, 234, 0.72);
  font-size: 10px;
  line-height: 1.45;
  border: 1px solid var(--line-dark);
  border-radius: 12px;
  background: rgba(16, 19, 16, 0.9);
  box-shadow: 0 15px 50px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(14px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.risk-ribbon.hidden {
  opacity: 0;
  pointer-events: none;
  transform: translateY(14px);
}

.risk-ribbon strong {
  color: var(--gold-2);
}

.risk-close {
  flex: 0 0 auto;
  padding: 0;
  color: rgba(245, 242, 234, 0.55);
  font-size: 16px;
  line-height: 1;
  border: 0;
  background: transparent;
}

/* Legal pages */
.legal-hero {
  padding: 170px 0 90px;
  color: var(--paper);
  background:
    radial-gradient(circle at 82% 20%, rgba(181, 154, 98, 0.18), transparent 24%),
    var(--ink);
}

.legal-title {
  margin-bottom: 18px;
  font-size: clamp(48px, 7vw, 90px);
  line-height: 1;
}

.legal-hero p {
  max-width: 700px;
  margin-bottom: 0;
  color: rgba(245, 242, 234, 0.58);
  font-size: 17px;
}

.legal-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 760px);
  justify-content: center;
  gap: 70px;
  padding: 90px 0 120px;
}

.legal-sidebar {
  position: sticky;
  top: 110px;
  align-self: start;
}

.legal-sidebar a {
  display: block;
  padding: 10px 0;
  color: var(--muted-dark);
  font-size: 13px;
  border-bottom: 1px solid var(--line-light);
}

.legal-sidebar a:hover {
  color: var(--gold-3);
}

.legal-article section {
  padding-bottom: 34px;
  margin-bottom: 38px;
  border-bottom: 1px solid var(--line-light);
}

.legal-article h2 {
  margin-bottom: 18px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 34px;
  font-weight: 400;
  line-height: 1.15;
}

.legal-article h3 {
  margin-top: 26px;
  margin-bottom: 10px;
  font-size: 16px;
}

.legal-article p,
.legal-article li {
  color: var(--muted-dark);
  font-size: 14px;
}

.legal-article ul {
  padding-left: 20px;
}

.legal-callout {
  padding: 22px;
  color: var(--paper);
  border-radius: 12px;
  background: var(--ink-2);
}

.legal-callout p {
  color: rgba(245, 242, 234, 0.68);
}

.lang-panel[hidden] {
  display: none !important;
}

/* General-information mode */
body.general-mode [data-access="offer"] {
  opacity: 0.45;
  pointer-events: none;
}

.general-mode-banner {
  display: none;
  position: fixed;
  z-index: 950;
  top: var(--header-height);
  right: 0;
  left: 0;
  padding: 8px 20px;
  color: var(--ink);
  text-align: center;
  font-size: 11px;
  font-weight: 800;
  background: var(--gold-2);
}

body.general-mode .general-mode-banner {
  display: block;
}

/* Responsive */
@media (max-width: 1120px) {
  .main-nav {
    gap: 18px;
  }

  .main-nav a:nth-child(4) {
    display: none;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr) 420px;
  }

  .hero-metric.metric-one {
    left: -12px;
  }

  .hero-metric.metric-two {
    right: -8px;
  }

  .engine-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .engine-item:nth-child(2) {
    border-right: 0;
  }

  .engine-item:nth-child(-n+2) {
    border-bottom: 1px solid var(--line-dark);
  }

  .pipeline-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pipeline-card:last-child {
    grid-column: 1 / -1;
    min-height: 360px;
  }
}

@media (max-width: 920px) {
  :root {
    --header-height: 70px;
  }

  .container,
  .narrow {
    width: min(calc(100% - 34px), var(--container));
  }

  .site-header {
    height: 70px;
  }

  .main-nav {
    position: fixed;
    top: 70px;
    right: 0;
    left: 0;
    display: grid;
    gap: 0;
    padding: 12px 17px 22px;
    background: rgba(16, 19, 16, 0.98);
    border-bottom: 1px solid var(--line-dark);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-12px);
    transition: opacity 180ms ease, transform 180ms ease;
  }

  .main-nav.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .main-nav a,
  .main-nav a:nth-child(4) {
    display: block;
    padding: 15px 8px;
    border-bottom: 1px solid var(--line-dark);
  }

  .main-nav a::after {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .header-actions .btn {
    display: none;
  }

  .hero {
    min-height: auto;
  }

  .hero-inner {
    min-height: auto;
    grid-template-columns: 1fr;
    padding-top: 150px;
    padding-bottom: 190px;
  }

  .hero-copy {
    max-width: 760px;
  }

  .hero-visual {
    min-height: 580px;
  }

  .architecture-frame {
    right: 50%;
    width: min(100%, 560px);
    transform: translateX(50%);
  }

  .hero-metric.metric-one {
    top: 76px;
    left: 2%;
  }

  .hero-metric.metric-two {
    right: 2%;
    bottom: 94px;
  }

  .hero-foot-inner {
    grid-template-columns: 1fr;
  }

  .hero-foot-item {
    min-height: auto;
    padding: 15px 17px;
    border-right: 0;
    border-bottom: 1px solid var(--line-dark);
  }

  .hero-foot-item:last-child {
    border-bottom: 0;
  }

  .section {
    padding: 90px 0;
  }

  .section-head {
    display: block;
    margin-bottom: 44px;
  }

  .section-head .section-lead {
    max-width: 720px;
  }

  .strategy-grid,
  .geo-grid,
  .platform-wrap,
  .calculator-card,
  .governance-grid,
  .eligibility-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .strategy-card {
    min-height: 0;
  }

  .geo-grid,
  .platform-wrap,
  .governance-grid,
  .contact-grid {
    gap: 54px;
  }

  .map-card {
    max-width: 680px;
    margin-inline: auto;
  }

  .platform-loop {
    order: 2;
  }

  .eligibility-grid {
    gap: 44px;
  }

  .contact-form {
    grid-template-columns: 1fr;
  }

  .contact-form .field-group,
  .contact-form .field-group.full,
  .contact-form .consent-row,
  .contact-form .form-actions {
    grid-column: 1;
  }

  .footer-main {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .legal-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .legal-sidebar {
    position: static;
    display: flex;
    overflow-x: auto;
    gap: 18px;
    padding-bottom: 8px;
  }

  .legal-sidebar a {
    flex: 0 0 auto;
  }
}

@media (max-width: 640px) {

  html[lang="zh-CN"] .display-title {
    font-size: clamp(44px, 12vw, 50px);
    line-height: 1.1;
  }

  html[lang="zh-CN"] .section-title {
    font-size: clamp(38px, 11.2vw, 48px);
    line-height: 1.16;
  }
  .brand img,
  .gate-logo {
    width: 142px;
  }

  .lang-switch button {
    min-width: 31px;
    padding: 5px 6px;
  }

  .display-title {
    font-size: clamp(48px, 15vw, 68px);
  }

  .section-title {
    font-size: clamp(38px, 12vw, 54px);
  }

  .hero-inner {
    padding-top: 130px;
    padding-bottom: 250px;
  }

  .hero-visual {
    min-height: 500px;
  }

  .architecture-frame {
    height: 500px;
  }

  .hero-metric {
    width: 160px;
    padding: 17px;
  }

  .hero-metric .metric-value {
    font-size: 36px;
  }

  .hero-metric.metric-one {
    top: 50px;
    left: 0;
  }

  .hero-metric.metric-two {
    right: 0;
    bottom: 54px;
  }

  .strategy-metrics,
  .calc-result,
  .eligibility-tests,
  .platform-points,
  .pipeline-grid {
    grid-template-columns: 1fr;
  }

  .pipeline-card,
  .pipeline-card:last-child {
    grid-column: auto;
    min-height: 430px;
  }

  .engine-grid {
    grid-template-columns: 1fr;
  }

  .engine-item,
  .engine-item:nth-child(2) {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line-dark);
  }

  .engine-item:last-child {
    border-bottom: 0;
  }

  .loop-ring {
    width: 300px;
    height: 300px;
  }

  .platform-loop {
    min-height: 470px;
    transform: scale(0.88);
  }

  .loop-node {
    width: 96px;
    height: 96px;
    font-size: 11px;
  }

  .loop-node.n1 { left: calc(50% - 48px); }
  .loop-node.n2 { right: 0; }
  .loop-node.n3 { right: 38px; }
  .loop-node.n4 { left: 38px; }
  .loop-node.n5 { left: 0; }

  .form-actions,
  .footer-bottom,
  .gate-top {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .footer-brand {
    grid-column: auto;
  }

  .risk-ribbon {
    right: 10px;
    bottom: 10px;
    left: 10px;
    max-width: none;
  }

  .faq-question {
    grid-template-columns: 30px 1fr 34px;
    gap: 12px;
  }

  .faq-answer p {
    padding-left: 42px;
  }

  .general-mode-banner {
    top: 70px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}