:root {
  --ink: #0f1c20;
  --ink-soft: #32454b;
  --muted: #687980;
  --paper: #f4f1e8;
  --paper-deep: #e5e0d2;
  --white: #fffdfa;
  --night: #071418;
  --deep: #0e343d;
  --teal: #1d6770;
  --moss: #64784a;
  --brass: #b77a37;
  --clay: #9b4f32;
  --aqua: #77c5c7;
  --line: rgba(15, 28, 32, 0.14);
  --line-inverse: rgba(255, 253, 250, 0.18);
  --shadow: 0 26px 70px rgba(12, 31, 37, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Optima", "Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.62;
  overflow-x: hidden;
}

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

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

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

button:disabled {
  cursor: wait;
  opacity: 0.64;
}

.site-header {
  position: fixed;
  z-index: 30;
  inset: 0 0 auto 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
  padding: 0 clamp(16px, 5vw, 70px);
  color: var(--white);
  background: linear-gradient(180deg, rgba(7, 20, 24, 0.86), rgba(7, 20, 24, 0.08));
  transition: height 0.22s ease, color 0.22s ease, background 0.22s ease, border-color 0.22s ease;
}

.site-header.scrolled {
  height: 66px;
  color: var(--ink);
  background: rgba(244, 241, 232, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.site-header.solid {
  position: sticky;
  color: var(--ink);
  background: rgba(244, 241, 232, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.site-header.solid .main-nav {
  position: static;
}

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

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 8px;
  color: var(--white);
  background: linear-gradient(135deg, var(--brass), var(--teal));
  font-weight: 900;
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.1;
}

.brand strong {
  font-size: 17px;
}

.brand small {
  margin-top: 4px;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.74;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 30px);
  font-size: 14px;
  font-weight: 700;
}

.main-nav a {
  position: relative;
  white-space: nowrap;
}

.main-nav a::after {
  position: absolute;
  right: 0;
  bottom: -9px;
  left: 0;
  height: 2px;
  content: "";
  background: var(--brass);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.main-nav a:hover::after {
  transform: scaleX(1);
}

.text-link {
  display: inline-flex;
  margin-top: 16px;
  color: var(--teal);
  font-weight: 900;
  border-bottom: 1px solid rgba(29, 103, 112, 0.34);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid currentColor;
  border-radius: 8px;
  color: inherit;
  background: transparent;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
}

.hero {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  color: var(--white);
  background: var(--night);
}

.hero-carousel,
.hero-shade,
.hero-grid {
  position: absolute;
  inset: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  transition: opacity 0.8s ease;
}

.hero-slide.active {
  opacity: 1;
}

.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.035);
  animation: heroSettle 1.8s cubic-bezier(0.2, 0.9, 0.2, 1) forwards;
}

.hero-shade {
  background:
    radial-gradient(circle at 75% 35%, rgba(119, 197, 199, 0.16), transparent 34%),
    linear-gradient(90deg, rgba(7, 20, 24, 0.94), rgba(7, 20, 24, 0.72) 47%, rgba(7, 20, 24, 0.34)),
    linear-gradient(180deg, rgba(7, 20, 24, 0.2), rgba(7, 20, 24, 0.9));
}

.hero-grid {
  opacity: 0.18;
  background:
    linear-gradient(rgba(255, 255, 255, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.12) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(90deg, #000, transparent 72%);
}

.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  min-height: 100vh;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 128px 0 38px;
}

.hero-content > * {
  max-width: 100%;
  min-width: 0;
}

.hero-kicker {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.hero-kicker span {
  padding: 7px 10px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.76);
  background: rgba(255, 255, 255, 0.06);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 980px;
  margin: 0;
  font-size: clamp(40px, 4.9vw, 62px);
  line-height: 1.02;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.hero h1 span {
  display: inline;
}

.hero-copy {
  max-width: 790px;
  width: 100%;
  margin: 18px 0 0;
  color: rgba(255, 253, 250, 0.82);
  font-size: clamp(17px, 1.55vw, 20px);
  overflow-wrap: anywhere;
}

.hero-copy span {
  display: inline;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 900;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  color: var(--night);
  background: var(--white);
}

.button.primary.dark {
  color: var(--white);
  background: var(--night);
}

.button.ghost {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.44);
  background: rgba(255, 255, 255, 0.08);
}

.button.light {
  color: var(--deep);
  border-color: var(--white);
  background: var(--white);
}

.button.outline-light {
  color: var(--white);
  border-color: rgba(255, 253, 250, 0.5);
  background: transparent;
}

.hero-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.hero-dot {
  min-height: 34px;
  padding: 7px 11px;
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: 999px;
  color: rgba(255, 253, 250, 0.74);
  background: rgba(255, 255, 255, 0.06);
  cursor: pointer;
  font-size: 12px;
  font-weight: 800;
}

.hero-dot.active {
  color: var(--night);
  background: var(--white);
  border-color: var(--white);
}

.hero-proof {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  width: min(100%, 980px);
  margin-top: 34px;
  background: rgba(255, 255, 255, 0.22);
  border: 1px solid rgba(255, 255, 255, 0.22);
}

.hero-proof div {
  min-height: 100px;
  padding: 18px 20px;
  background: rgba(7, 20, 24, 0.62);
  backdrop-filter: blur(14px);
}

.hero-proof strong,
.hero-proof span {
  display: block;
}

.hero-proof strong {
  font-size: clamp(26px, 2.8vw, 38px);
  line-height: 1;
}

.hero-proof span {
  margin-top: 10px;
  color: rgba(255, 253, 250, 0.68);
  font-size: 13px;
}

section {
  padding: clamp(74px, 9vw, 132px) clamp(18px, 5vw, 70px);
}

.section-lead {
  width: min(1160px, 100%);
  margin: 0 auto 42px;
}

.section-lead.compact {
  margin-bottom: 30px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--brass);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.section-lead h2 {
  max-width: 920px;
  margin: 0;
  font-size: clamp(32px, 4.6vw, 62px);
  line-height: 1.08;
  letter-spacing: 0;
}

.section-lead > p:not(.eyebrow) {
  max-width: 820px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.inverse {
  color: var(--white);
}

.inverse > p:not(.eyebrow),
.inverse p {
  color: rgba(255, 253, 250, 0.72);
}

.model-section {
  background:
    linear-gradient(90deg, rgba(100, 120, 74, 0.1), transparent 40%),
    var(--paper);
}

.evidence-section {
  background: var(--white);
}

.evidence-mosaic {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr 0.9fr;
  grid-auto-rows: 270px;
  gap: 14px;
  width: min(1180px, 100%);
  margin: 0 auto;
}

.evidence-mosaic figure {
  position: relative;
  overflow: hidden;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper);
}

.evidence-mosaic figure.wide {
  grid-row: span 2;
}

.evidence-mosaic img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.evidence-mosaic figure:hover img {
  transform: scale(1.035);
}

.evidence-mosaic figcaption {
  position: absolute;
  right: 12px;
  bottom: 12px;
  left: 12px;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  color: var(--white);
  background: rgba(7, 20, 24, 0.74);
  backdrop-filter: blur(12px);
  font-size: 14px;
  font-weight: 900;
}

.model-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  width: min(1160px, 100%);
  margin: 0 auto;
  background: var(--line);
  border: 1px solid var(--line);
}

.model-flow article {
  min-height: 430px;
  padding: clamp(22px, 2.4vw, 30px);
  background: var(--white);
}

.model-flow span,
.scene-copy span {
  display: inline-grid;
  place-items: center;
  min-width: 42px;
  height: 42px;
  margin-bottom: 36px;
  border-radius: 50%;
  color: var(--white);
  background: var(--teal);
  font-weight: 900;
}

.model-flow h3,
.chain-stage h3,
.scene-copy h3,
.proof-grid h3,
.ai-columns h3 {
  margin: 0 0 14px;
  font-size: clamp(22px, 2vw, 28px);
  line-height: 1.18;
}

.model-flow p,
.chain-stage p,
.scene-copy p,
.proof-grid p,
.ai-columns p,
.company-copy p {
  margin: 0;
  color: var(--muted);
}

.model-flow ul {
  display: grid;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.model-flow li {
  padding: 11px 0;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 14px;
}

.capability-section {
  color: var(--white);
  background: var(--night);
}

.chain {
  display: grid;
  grid-template-columns: repeat(5, minmax(190px, 1fr));
  gap: 14px;
  width: min(1240px, 100%);
  margin: 0 auto;
  overflow-x: auto;
  padding-bottom: 8px;
}

.chain-stage {
  min-height: 310px;
  padding: 24px;
  border: 1px solid var(--line-inverse);
  border-radius: 10px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03)),
    #0a1d22;
}

.chain-stage b {
  display: block;
  margin-bottom: 70px;
  color: var(--aqua);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.chain-stage p {
  color: rgba(255, 253, 250, 0.68);
}

.scenes-section {
  background: var(--paper-deep);
}

.scene-layout {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 22px;
  width: min(1220px, 100%);
  margin: 0 auto;
}

.scene-menu {
  display: grid;
  align-self: start;
  gap: 8px;
  position: sticky;
  top: 88px;
}

.scene-button {
  min-height: 58px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink-soft);
  background: rgba(255, 253, 250, 0.48);
  text-align: left;
  cursor: pointer;
}

.scene-button.active {
  color: var(--white);
  background: var(--deep);
  border-color: var(--deep);
}

.scene-panel {
  display: none;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 1fr);
  gap: 0;
  overflow: hidden;
  min-height: 650px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.scene-panel.active {
  display: grid;
}

.scene-panel img {
  width: 100%;
  height: 100%;
  min-height: 650px;
  object-fit: cover;
}

.scene-copy {
  padding: clamp(28px, 5vw, 58px);
}

.scene-copy dl {
  display: grid;
  gap: 1px;
  margin: 28px 0 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.scene-copy dl div {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 16px;
  padding: 16px;
  background: #fbfaf4;
}

.scene-copy dt {
  color: var(--brass);
  font-weight: 900;
}

.scene-copy dd {
  margin: 0;
  color: var(--ink-soft);
}

.proof-section {
  background: var(--deep);
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  width: min(1160px, 100%);
  margin: 0 auto;
}

.proof-grid article {
  overflow: hidden;
  min-height: 420px;
  padding: 0;
  border: 1px solid var(--line-inverse);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.07);
  color: var(--white);
}

.proof-grid img {
  width: 100%;
  height: 190px;
  object-fit: cover;
  border-bottom: 1px solid var(--line-inverse);
  filter: saturate(0.9);
}

.proof-grid span {
  display: inline-block;
  margin: 24px 28px 42px;
  color: var(--aqua);
  font-weight: 900;
}

.proof-grid h3,
.proof-grid p {
  margin-right: 28px;
  margin-left: 28px;
}

.proof-grid p {
  margin-bottom: 28px;
  color: rgba(255, 253, 250, 0.72);
}

.ai-section {
  background:
    linear-gradient(140deg, rgba(29, 103, 112, 0.1), transparent 36%),
    var(--paper);
}

.seo-entry-section {
  background: var(--white);
}

.topic-links {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  width: min(1180px, 100%);
  margin: 0 auto;
}

.topic-links a {
  min-height: 78px;
  padding: 18px;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  font-weight: 900;
}

.topic-links a:hover {
  color: var(--white);
  background: var(--deep);
}

.ai-columns {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  width: min(1160px, 100%);
  margin: 0 auto;
}

.ai-columns article {
  min-height: 300px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--white);
}

.ai-columns b {
  display: block;
  margin-bottom: 58px;
  color: var(--brass);
}

.implementation-map {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  width: min(1160px, 100%);
  margin: 28px auto 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.implementation-map span {
  display: grid;
  place-items: center;
  min-height: 74px;
  padding: 14px;
  background: var(--deep);
  color: var(--white);
  font-weight: 900;
  text-align: center;
}

.topic-page {
  background: var(--paper);
}

.topic-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 1.05fr);
  gap: clamp(24px, 5vw, 70px);
  align-items: center;
  min-height: calc(100vh - 78px);
  padding-top: 70px;
}

.topic-hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(42px, 6vw, 78px);
  line-height: 1.04;
  letter-spacing: 0;
}

.topic-hero p:not(.eyebrow) {
  max-width: 720px;
  margin: 24px 0;
  color: var(--ink-soft);
  font-size: clamp(17px, 2vw, 22px);
}

.topic-hero img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

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

.topic-grid article {
  padding: 26px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.topic-grid h2,
.faq-block h2 {
  margin-top: 0;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.18;
}

.topic-grid p,
.faq-block p {
  color: var(--ink-soft);
}

.faq-block {
  max-width: 980px;
  margin: 0 auto;
}

.faq-block details {
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.faq-block summary {
  cursor: pointer;
  color: var(--deep);
  font-size: 20px;
  font-weight: 900;
}

.company-section {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  gap: clamp(30px, 5vw, 64px);
  align-items: center;
  background: var(--paper-deep);
}

.company-photo img {
  width: 100%;
  max-height: 680px;
  object-fit: cover;
  object-position: center 28%;
  border-radius: 10px;
  box-shadow: var(--shadow);
}

.company-copy h2,
.contact-card h2 {
  margin: 0 0 20px;
  font-size: clamp(34px, 4.3vw, 60px);
  line-height: 1.08;
}

.company-facts {
  display: grid;
  gap: 1px;
  margin-top: 34px;
  background: var(--line);
  border: 1px solid var(--line);
}

.company-facts div {
  display: grid;
  grid-template-columns: 116px 1fr;
  gap: 18px;
  padding: 18px;
  background: var(--white);
}

.company-facts strong {
  color: var(--brass);
}

.company-facts span {
  color: var(--ink-soft);
}

.contact-section {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 28px;
  width: min(1180px, 100%);
  margin: 0 auto;
}

.contact-card,
.contact-form {
  padding: clamp(28px, 4vw, 48px);
  border-radius: 10px;
}

.contact-card {
  color: var(--white);
  background:
    linear-gradient(140deg, rgba(183, 122, 55, 0.24), transparent 44%),
    var(--deep);
}

.contact-card p {
  color: rgba(255, 253, 250, 0.76);
}

.contact-list {
  display: grid;
  gap: 10px;
  margin-top: 34px;
}

.contact-list span,
.contact-list a {
  padding: 13px 0;
  border-top: 1px solid var(--line-inverse);
}

.contact-list a {
  color: var(--white);
  font-weight: 800;
  text-decoration: none;
}

.contact-form {
  display: grid;
  gap: 18px;
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.contact-form label {
  display: grid;
  gap: 8px;
}

.contact-form label span {
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 900;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #fbfaf4;
}

.contact-form textarea {
  resize: vertical;
}

.contact-form h3,
.contact-guide h3 {
  margin: 0;
  font-size: 26px;
  line-height: 1.2;
}

.contact-guide ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.contact-guide li {
  padding: 12px 0;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
}

.backend-note {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.backend-note a {
  color: var(--teal);
  font-weight: 800;
}

.form-status {
  min-height: 24px;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.form-status.success {
  color: var(--teal);
  font-weight: 800;
}

.form-status.error {
  color: var(--clay);
  font-weight: 800;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 32px clamp(18px, 5vw, 70px);
  color: rgba(255, 253, 250, 0.66);
  background: var(--night);
  font-size: 14px;
}

.site-footer div {
  display: grid;
  gap: 4px;
}

.site-footer strong {
  color: var(--white);
}

.site-footer a {
  color: rgba(255, 253, 250, 0.78);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--white);
}

@keyframes heroSettle {
  to {
    transform: scale(1);
  }
}

@media (max-width: 1100px) {
  .main-nav {
    gap: 14px;
    font-size: 13px;
  }

  .model-flow,
  .proof-grid,
  .ai-columns,
  .topic-links,
  .topic-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .topic-hero {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .scene-layout {
    grid-template-columns: 1fr;
  }

  .scene-menu {
    position: static;
    grid-template-columns: repeat(3, 1fr);
  }

  .scene-panel {
    grid-template-columns: 1fr;
  }

  .scene-panel img {
    height: 380px;
    min-height: 0;
  }

  .evidence-mosaic {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 880px) {
  .menu-toggle {
    display: block;
  }

  .main-nav {
    position: fixed;
    top: 68px;
    right: 12px;
    left: 12px;
    display: none;
    padding: 18px;
    color: var(--ink);
    background: rgba(244, 241, 232, 0.96);
    border: 1px solid var(--line);
    border-radius: 10px;
    box-shadow: var(--shadow);
  }

  .main-nav.open {
    display: grid;
  }

  .site-header.solid {
    height: auto;
    min-height: 78px;
    align-items: flex-start;
    padding-top: 16px;
    padding-bottom: 16px;
  }

  .site-header.solid .main-nav {
    display: flex;
    position: static;
    flex-wrap: wrap;
    width: auto;
    margin-left: 12px;
    padding: 0;
    color: inherit;
    background: transparent;
    border: 0;
    border-radius: 0;
    box-shadow: none;
  }

  .hero-proof,
  .model-flow,
  .proof-grid,
  .ai-columns,
  .topic-links,
  .topic-grid,
  .company-section,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .evidence-mosaic {
    grid-template-columns: 1fr;
    grid-auto-rows: 250px;
  }

  .evidence-mosaic figure.wide {
    grid-row: auto;
  }

  .chain {
    grid-template-columns: repeat(5, minmax(230px, 1fr));
  }

  .implementation-map {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 0 14px;
  }

  .brand small {
    display: none;
  }

  .hero-content {
    width: calc(100% - 56px);
    padding-top: 112px;
  }

  .hero h1 {
    max-width: 100%;
    font-size: clamp(34px, 10.5vw, 42px);
    line-height: 1.08;
    word-break: break-word;
  }

  .hero h1 span {
    display: block;
  }

  .hero-kicker {
    display: none;
  }

  .hero-controls {
    display: none;
  }

  .hero-copy,
  .section-lead > p:not(.eyebrow) {
    font-size: 15px;
    line-height: 1.72;
    word-break: break-all;
  }

  .hero-copy span {
    display: block;
  }

  section {
    padding: 60px 14px;
  }

  .hero-proof div,
  .model-flow article,
  .chain-stage,
  .proof-grid article,
  .ai-columns article {
    min-height: auto;
  }

  .scene-menu {
    display: flex;
    overflow-x: auto;
    padding-bottom: 8px;
  }

  .scene-button {
    flex: 0 0 230px;
  }

  .scene-panel {
    min-height: 0;
  }

  .scene-panel img {
    height: 260px;
  }

  .scene-copy {
    padding: 24px;
  }

  .scene-copy dl div,
  .company-facts div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .implementation-map {
    grid-template-columns: 1fr 1fr;
  }

  .site-footer {
    display: grid;
  }
}

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