@import url("https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Sora:wght@400;500;600;700&display=swap");

:root {
  --ink: #101518;
  --ink-soft: #4c575e;
  --mist: #eef2f3;
  --paper: #f7f9f9;
  --white: #ffffff;
  --line: rgba(16, 21, 24, 0.11);
  --line-strong: rgba(16, 21, 24, 0.2);
  --mint: #69dfa3;
  --teal: #18a995;
  --cyan: #13a7d6;
  --amber: #d89a39;
  --header-h: 68px;
  --max: 1240px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --shadow: 0 20px 56px rgba(16, 21, 24, 0.12);
  --r-sm: 4px;
  --r-md: 6px;
  --r-lg: 8px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  letter-spacing: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Sora", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

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

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

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

button {
  font: inherit;
}

.skip-link {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 200;
  transform: translateY(-160%);
  padding: 9px 12px;
  color: var(--white);
  background: var(--ink);
  border-radius: var(--r-sm);
}

.skip-link:focus {
  transform: none;
}

.shell {
  width: min(calc(100% - 40px), var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: rgba(247, 249, 249, 0.94);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(16px) saturate(130%);
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 8px 24px rgba(16, 21, 24, 0.05);
}

.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  gap: 10px;
}

.brand-mark {
  width: 44px;
  height: 27px;
  flex: 0 0 auto;
}

.brand-mark img,
.brand-mark svg {
  width: 100%;
  height: 100%;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1.05;
}

.brand-en {
  font-size: 1rem;
  font-weight: 700;
}

.brand-cn {
  color: var(--ink-soft);
  font-size: 0.7rem;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.desktop-nav a {
  position: relative;
  color: var(--ink-soft);
  font-size: 0.88rem;
  transition: color 160ms ease;
}

.desktop-nav a:hover {
  color: var(--ink);
}

.desktop-nav a.is-active {
  color: var(--ink);
}

.desktop-nav a::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 1px;
  background: var(--teal);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 260ms var(--ease);
}

.desktop-nav a:hover::after,
.desktop-nav a.is-active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-cta,
.btn,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 16px;
  border: 1px solid transparent;
  border-radius: var(--r-md);
  font-size: 0.9rem;
  font-weight: 650;
  cursor: pointer;
  transition: color 160ms ease, background 160ms ease, border-color 160ms ease;
}

.nav-cta,
.btn-primary,
.button {
  color: var(--white);
  background: var(--ink);
}

.nav-cta:hover,
.btn-primary:hover,
.button:hover {
  background: #263036;
}

.btn-ghost {
  color: var(--ink);
  background: transparent;
  border-color: var(--line-strong);
}

.btn-ghost:hover {
  background: var(--white);
  border-color: var(--ink);
}

.menu-btn {
  display: none;
  place-items: center;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  color: var(--ink);
  background: var(--white);
}

.menu-btn span,
.menu-btn span::before,
.menu-btn span::after {
  width: 18px;
  height: 2px;
  background: currentColor;
  content: "";
  transition: transform 180ms ease;
}

.menu-btn span {
  position: relative;
}

.menu-btn span::before,
.menu-btn span::after {
  position: absolute;
  left: 0;
}

.menu-btn span::before {
  top: -6px;
}

.menu-btn span::after {
  top: 6px;
}

.menu-open .menu-btn span {
  background: transparent;
}

.menu-open .menu-btn span::before {
  top: 0;
  transform: rotate(45deg);
}

.menu-open .menu-btn span::after {
  top: 0;
  transform: rotate(-45deg);
}

.mobile-nav {
  position: fixed;
  inset: var(--header-h) 0 auto;
  z-index: 45;
  display: grid;
  max-height: 0;
  overflow: hidden;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
  transition: max-height 240ms var(--ease), opacity 180ms ease, transform 240ms var(--ease);
}

.mobile-nav a {
  padding: 15px 20px;
  border-top: 1px solid var(--line);
  font-weight: 600;
}

.menu-open .mobile-nav {
  max-height: 420px;
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: calc(100svh - var(--header-h) - 46px);
  padding: 54px 0 34px;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.frequency-canvas {
  position: absolute;
  inset: auto 0 0;
  width: 100%;
  height: 120px;
  pointer-events: none;
  opacity: 0.42;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(390px, 0.86fr) minmax(560px, 1.14fr);
  align-items: center;
  gap: 34px;
}

.hero-copy {
  max-width: 600px;
}

.kicker,
.section-index,
.article-meta {
  margin: 0 0 10px;
  color: var(--ink-soft);
  font-size: 0.73rem;
  font-weight: 650;
  text-transform: uppercase;
}

.kicker::before {
  display: inline-block;
  width: 34px;
  height: 2px;
  margin-right: 10px;
  vertical-align: middle;
  background: var(--teal);
  content: "";
}

.brand-hero {
  margin: 0;
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 5.5rem;
  font-weight: 400;
  line-height: 0.88;
}

.brand-hero em {
  display: block;
  max-width: 17ch;
  margin-top: 24px;
  color: var(--teal);
  font-family: "Sora", "PingFang SC", sans-serif;
  font-size: 1.8rem;
  font-style: normal;
  font-weight: 600;
  line-height: 1.28;
}

.hero-lede {
  max-width: 39rem;
  margin: 24px 0 0;
  color: var(--ink-soft);
  font-size: 1.05rem;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.hero-notes {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin-top: 24px;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.hero-notes span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.hero-notes span::before {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  content: "";
}

.hero-notes span:nth-child(2)::before {
  background: var(--cyan);
}

.hero-notes span:nth-child(3)::before {
  background: var(--amber);
}

.hero-notes span:nth-child(4)::before {
  background: #c978b8;
}

.product-stage {
  --stage-rx: 0deg;
  --stage-ry: 0deg;
  --stage-x: 0px;
  --stage-y: 0px;
  --stage-image-x: 0px;
  --stage-image-y: 0px;
  min-width: 0;
  height: 500px;
  overflow: hidden;
  background: #12181c;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow);
  transform: perspective(1200px) rotateX(var(--stage-rx)) rotateY(var(--stage-ry)) translate3d(var(--stage-x), var(--stage-y), 0);
  transform-style: preserve-3d;
  transition: transform 160ms ease-out, box-shadow 420ms var(--ease), border-color 420ms ease;
  will-change: transform;
}

.product-stage:hover {
  box-shadow: 0 28px 72px rgba(16, 21, 24, 0.16);
  border-color: rgba(24, 169, 149, 0.42);
}

.stage-bar {
  display: grid;
  grid-template-columns: 54px 1fr auto;
  align-items: center;
  min-height: 42px;
  padding: 0 14px;
  gap: 12px;
  color: rgba(255, 255, 255, 0.66);
  background: #12181c;
  border-bottom: 1px solid rgba(255, 255, 255, 0.09);
  font-size: 0.7rem;
  text-transform: uppercase;
}

.stage-dots {
  display: flex;
  gap: 6px;
}

.stage-dots i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ff6b6b;
}

.stage-dots i:nth-child(2) {
  background: #ffd166;
}

.stage-dots i:nth-child(3) {
  background: var(--mint);
}

.stage-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--mint);
  font-size: 0.75rem;
  text-transform: none;
}

.stage-status::before {
  width: 6px;
  height: 6px;
  background: var(--mint);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(105, 223, 163, 0.34);
  content: "";
  animation: status-signal 2.8s ease-out infinite;
}

.stage-visual,
.stage-visual picture,
.stage-visual img {
  width: 100%;
  height: 458px;
}

.stage-visual img {
  object-fit: cover;
  object-position: top center;
  transform: translate3d(var(--stage-image-x), var(--stage-image-y), 0) scale(1.006);
  transition: transform 180ms ease-out;
  will-change: transform;
}

.stage-visual {
  position: relative;
  overflow: hidden;
}

.stage-visual::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 70%, rgba(18, 24, 28, 0.16));
  content: "";
  pointer-events: none;
}

.stage-visual::before {
  position: absolute;
  z-index: 2;
  top: 0;
  bottom: 0;
  left: -1px;
  width: 1px;
  background: rgba(105, 223, 163, 0.5);
  box-shadow: 0 0 18px rgba(105, 223, 163, 0.25);
  content: "";
  opacity: 0;
  pointer-events: none;
  animation: stage-scan 6.8s var(--ease) 1.1s infinite;
}

.evidence-strip {
  color: #eaf0f2;
  background: #151c20;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.evidence-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr) auto;
  align-items: stretch;
}

.evidence-grid > div,
.evidence-link {
  min-width: 0;
  padding: 19px 20px;
  border-right: 1px solid rgba(255, 255, 255, 0.09);
}

.evidence-grid > div:first-child {
  padding-left: 0;
}

.evidence-grid span {
  display: block;
  margin-bottom: 5px;
  color: var(--mint);
  font-size: 0.7rem;
}

.evidence-grid strong {
  display: block;
  font-size: 0.88rem;
}

.evidence-grid p {
  margin: 3px 0 0;
  color: rgba(234, 240, 242, 0.62);
  font-size: 0.75rem;
  line-height: 1.45;
}

.evidence-link {
  display: flex;
  align-items: center;
  gap: 24px;
  border-right: 0;
  font-size: 0.85rem;
  font-weight: 650;
}

.evidence-link:hover {
  color: var(--mint);
}

.section {
  padding: 80px 0;
}

.section:nth-of-type(even):not(.decision-section) {
  background: var(--white);
}

.section-head {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: end;
  gap: 24px;
  margin-bottom: 34px;
}

.section-head h2,
.contact-band h2,
.decision-band h2,
.page-main h1,
.error-page h1 {
  margin: 0;
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 3rem;
  font-weight: 400;
  line-height: 1.08;
}

.section-head h2 {
  max-width: 17ch;
}

.section-copy {
  max-width: 36rem;
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.96rem;
  line-height: 1.65;
}

.workflow {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.workflow::before {
  position: absolute;
  top: 25px;
  right: 4%;
  left: 4%;
  height: 1px;
  background: var(--line-strong);
  content: "";
}

.workflow::after {
  position: absolute;
  z-index: 0;
  top: 25px;
  left: 4%;
  width: 0;
  height: 1px;
  background: var(--teal);
  content: "";
  transition: width 1.15s var(--ease) 180ms;
}

.workflow.is-in::after {
  width: 92%;
}

.step {
  position: relative;
  padding: 6px 4px 0;
  transition: color 220ms ease;
}

.step:hover .step-num {
  color: var(--white);
  background: var(--teal);
  border-color: var(--teal);
}

.step-num {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: 16px;
  background: var(--white);
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  font-size: 0.8rem;
  font-weight: 650;
  transition: color 220ms ease, background 220ms ease, border-color 220ms ease;
}

.step h3,
.capability h3,
.decision-item h3,
.fit-card h3,
.aside-card h3 {
  margin: 0 0 8px;
  font-size: 1.02rem;
}

.step p,
.capability p,
.decision-item p,
.aside-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
  line-height: 1.62;
}

.capability-rail {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.capability {
  position: relative;
  min-height: 166px;
  padding: 22px 20px;
  background: var(--white);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background 220ms ease, border-color 220ms ease;
}

.capability::before {
  position: absolute;
  top: -1px;
  right: -1px;
  left: -1px;
  height: 2px;
  background: var(--teal);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 420ms var(--ease);
}

.capability:hover {
  background: #f0f8f6;
  border-bottom-color: rgba(24, 169, 149, 0.4);
}

.capability:hover::before {
  transform: scaleX(1);
}

.capability-index {
  display: block;
  margin-bottom: 14px;
  color: var(--teal);
  font-size: 0.72rem;
  font-weight: 650;
}

.decision-section {
  color: #f2f5f6;
  background: #172025;
}

.decision-band {
  padding: 0;
}

.decision-band .section-index {
  color: rgba(242, 245, 246, 0.58);
}

.decision-band h2 {
  max-width: 21ch;
  color: var(--white);
}

.decision-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  margin-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.13);
  border-left: 1px solid rgba(255, 255, 255, 0.13);
}

.decision-item {
  min-height: 172px;
  padding: 22px;
  border-right: 1px solid rgba(255, 255, 255, 0.13);
  border-bottom: 1px solid rgba(255, 255, 255, 0.13);
  transition: background 240ms ease;
}

.decision-item:hover {
  background: rgba(255, 255, 255, 0.035);
}

.decision-item strong {
  display: block;
  margin-bottom: 12px;
  color: var(--mint);
  font-size: 0.7rem;
}

.decision-item h3 {
  color: var(--white);
}

.decision-item p {
  color: rgba(242, 245, 246, 0.68);
}

.growth-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line-strong);
}

.growth-item {
  min-height: 230px;
  padding: 24px 20px;
  border-right: 1px solid var(--line);
  transition: background 220ms ease;
}

.growth-item:first-child {
  border-left: 1px solid var(--line);
}

.growth-item:hover {
  background: var(--white);
}

.growth-item span {
  display: block;
  margin-bottom: 54px;
  color: var(--teal);
  font-size: 0.72rem;
  font-weight: 650;
}

.growth-item h3 {
  margin: 0 0 9px;
  font-size: 1.04rem;
}

.growth-item p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
  line-height: 1.62;
}

.fit-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.fit-card {
  padding: 25px 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
}

.fit-card-mute {
  background: var(--mist);
}

.fit-card ul,
.boundary-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.fit-card li {
  position: relative;
  padding-left: 16px;
  color: var(--ink-soft);
  font-size: 0.92rem;
  line-height: 1.58;
}

.fit-card li::before {
  position: absolute;
  top: 0.58em;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  content: "";
}

.fit-card-mute li::before {
  background: #8c979d;
}

.boundary-list li {
  padding: 15px 18px;
  color: var(--ink-soft);
  background: var(--white);
  border-left: 3px solid var(--teal);
  font-size: 0.93rem;
  line-height: 1.6;
}

.methods-section {
  border-top: 1px solid var(--line);
}

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

.method-item {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr) 24px;
  align-items: center;
  min-height: 78px;
  gap: 18px;
  border-bottom: 1px solid var(--line);
  transition: color 160ms ease, background 160ms ease;
}

.method-item:hover {
  color: var(--teal);
  background: rgba(255, 255, 255, 0.6);
}

.method-item > span {
  color: var(--ink-soft);
  font-size: 0.74rem;
}

.method-item strong {
  font-size: 1rem;
  font-weight: 600;
}

.method-item i {
  font-style: normal;
  text-align: right;
  transition: transform 220ms var(--ease);
}

.method-item:hover i {
  transform: translateX(4px);
}

.text-link {
  display: inline-flex;
  gap: 12px;
  margin-top: 22px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--line-strong);
  font-size: 0.9rem;
  font-weight: 650;
}

.text-link:hover {
  color: var(--teal);
  border-color: var(--teal);
}

.contact-band {
  padding: 76px 0 84px;
  background: var(--mist);
  border-top: 1px solid var(--line);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: start;
  gap: 30px;
}

.contact-panel {
  padding-right: 20px;
}

.contact-panel h2 {
  max-width: 13ch;
}

.contact-panel > p {
  max-width: 38rem;
  margin: 12px 0 22px;
  color: var(--ink-soft);
}

.contact-rows {
  display: grid;
}

.contact-row {
  display: grid;
  grid-template-columns: 72px 1fr;
  align-items: baseline;
  gap: 12px;
  padding: 13px 0;
  border-top: 1px solid var(--line);
}

.contact-row span {
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.contact-row strong,
.contact-row a {
  font-size: 0.98rem;
  font-weight: 600;
}

.contact-aside {
  display: grid;
  gap: 12px;
}

.contact-signal {
  padding: 4px 0 0 28px;
  border-left: 1px solid var(--line-strong);
}

.signal-label {
  margin: 0 0 18px;
  color: var(--ink-soft);
  font-size: 0.72rem;
  font-weight: 650;
  text-transform: uppercase;
}

.contact-signal > div {
  display: grid;
  grid-template-columns: 48px 1fr;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.contact-signal > div span {
  color: var(--teal);
  font-size: 0.72rem;
}

.contact-signal > div strong {
  font-size: 0.94rem;
}

.contact-signal > a {
  display: inline-flex;
  justify-content: space-between;
  width: 100%;
  margin-top: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--line-strong);
  font-size: 0.9rem;
  font-weight: 650;
}

.contact-signal > a:hover {
  color: var(--teal);
}

.aside-card {
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
}

.aside-link {
  margin-top: 14px !important;
}

.aside-link a {
  color: var(--ink);
  font-weight: 600;
  border-bottom: 1px solid var(--line-strong);
}

.site-footer {
  padding: 28px 0 36px;
  background: var(--paper);
  border-top: 1px solid var(--line);
}

.footer-row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-copy {
  max-width: 42rem;
  margin: 10px 0 0;
  color: var(--ink-soft);
  font-size: 0.84rem;
  line-height: 1.6;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 16px;
  color: var(--ink-soft);
  font-size: 0.84rem;
}

.footer-links a:hover {
  color: var(--ink);
}

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

.js .reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 720ms var(--ease), transform 720ms var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}

.js .reveal.is-in {
  opacity: 1;
  transform: none;
}

.js .workflow .step,
.js .capability-rail .capability {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 520ms var(--ease), transform 520ms var(--ease), background 220ms ease, border-color 220ms ease;
}

.js .workflow.is-in .step,
.js .capability-rail.is-in .capability {
  opacity: 1;
  transform: none;
}

.js .workflow.is-in .step:nth-child(2),
.js .capability-rail.is-in .capability:nth-child(2) { transition-delay: 70ms; }
.js .workflow.is-in .step:nth-child(3),
.js .capability-rail.is-in .capability:nth-child(3) { transition-delay: 140ms; }
.js .workflow.is-in .step:nth-child(4),
.js .capability-rail.is-in .capability:nth-child(4) { transition-delay: 210ms; }
.js .capability-rail.is-in .capability:nth-child(5) { transition-delay: 280ms; }
.js .capability-rail.is-in .capability:nth-child(6) { transition-delay: 350ms; }

.hero-copy > * {
  opacity: 0;
  filter: blur(3px);
  transform: translateY(14px);
  animation: hero-enter 760ms var(--ease) forwards;
}

.hero-copy > *:nth-child(2) { animation-delay: 70ms; }
.hero-copy > *:nth-child(3) { animation-delay: 120ms; }
.hero-copy > *:nth-child(4) { animation-delay: 170ms; }
.hero-copy > *:nth-child(5) { animation-delay: 220ms; }

.js .product-stage {
  opacity: 0;
  clip-path: inset(0 0 8% 0 round var(--r-lg));
  transform: perspective(1200px) rotateX(var(--stage-rx)) rotateY(var(--stage-ry)) translate3d(var(--stage-x), calc(var(--stage-y) + 18px), 0);
  animation: stage-enter 920ms var(--ease) 90ms forwards;
}

@keyframes hero-enter {
  to {
    opacity: 1;
    filter: blur(0);
    transform: translateY(0);
  }
}

@keyframes stage-enter {
  to {
    opacity: 1;
    clip-path: inset(0 0 0 0 round var(--r-lg));
    transform: perspective(1200px) rotateX(var(--stage-rx, 0deg)) rotateY(var(--stage-ry, 0deg)) translate3d(var(--stage-x, 0px), var(--stage-y, 0px), 0);
  }
}

@keyframes stage-scan {
  0%,
  18% {
    left: 0;
    opacity: 0;
  }
  23% {
    opacity: 0.72;
  }
  70% {
    opacity: 0.32;
  }
  78%,
  100% {
    left: 100%;
    opacity: 0;
  }
}

@keyframes status-signal {
  0% {
    box-shadow: 0 0 0 0 rgba(105, 223, 163, 0.34);
  }
  58%,
  100% {
    box-shadow: 0 0 0 7px rgba(105, 223, 163, 0);
  }
}

.page-main {
  min-height: calc(100vh - var(--header-h));
  padding: 64px 0 84px;
}

.page-main h1 {
  max-width: 18ch;
}

.page-main .deck {
  max-width: 44rem;
  margin: 14px 0 30px;
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.68;
}

.fact-table {
  width: 100%;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-collapse: separate;
  border-spacing: 0;
  border-radius: var(--r-lg);
}

.fact-table th,
.fact-table td {
  padding: 15px 18px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  font-size: 0.94rem;
}

.fact-table th {
  width: 28%;
  color: var(--ink-soft);
  background: var(--mist);
  font-weight: 500;
}

.fact-table tr:last-child th,
.fact-table tr:last-child td {
  border-bottom: 0;
}

.fact-section {
  margin-top: 38px;
}

.fact-section h2,
.contact-direct h2 {
  margin: 0 0 14px;
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 2rem;
  font-weight: 400;
}

.page-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
}

.contact-page-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  align-items: start;
  gap: 54px;
}

.prep-list {
  margin: 34px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-strong);
  list-style: none;
}

.prep-list li {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.prep-list li > span {
  color: var(--teal);
  font-size: 0.72rem;
  font-weight: 650;
}

.prep-list strong {
  display: block;
  margin-bottom: 4px;
}

.prep-list p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.contact-direct {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  padding: 26px;
  color: #edf3f4;
  background: #151c20;
  border-radius: var(--r-lg);
}

.contact-direct .section-index {
  color: rgba(237, 243, 244, 0.56);
}

.contact-direct h2 {
  color: var(--white);
}

.contact-direct dl {
  margin: 22px 0;
}

.contact-direct dl > div {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 12px;
  padding: 12px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.contact-direct dt {
  color: rgba(237, 243, 244, 0.58);
  font-size: 0.8rem;
}

.contact-direct dd {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 600;
}

.contact-direct .btn-primary {
  width: 100%;
  color: var(--ink);
  background: var(--mint);
}

.contact-note {
  margin: 18px 0 0;
  color: rgba(237, 243, 244, 0.62);
  font-size: 0.78rem;
  line-height: 1.55;
}

.article-layout {
  color: var(--ink);
  background: var(--paper);
}

.article-shell {
  width: min(calc(100% - 40px), 860px);
  margin-inline: auto;
  padding: 30px 0 82px;
}

.article-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 72px;
  padding-bottom: 16px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
  font-size: 0.82rem;
}

.article-topline a:hover {
  color: var(--ink);
}

.article-layout h1 {
  max-width: 24ch;
  margin: 0;
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 3rem;
  font-weight: 400;
  line-height: 1.08;
}

.article-deck {
  max-width: 48rem;
  margin: 18px 0 34px;
  color: var(--ink-soft);
  font-size: 1.04rem;
  line-height: 1.72;
}

.article-body {
  color: #263137;
  font-size: 1rem;
  line-height: 1.82;
}

.article-body h2 {
  margin: 44px 0 14px;
  color: var(--ink);
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 2rem;
  font-weight: 400;
  line-height: 1.2;
}

.article-body h3 {
  margin: 30px 0 10px;
  color: var(--ink);
  font-size: 1.12rem;
}

.article-body p {
  margin: 0 0 18px;
}

.article-body ul,
.article-body ol {
  margin: 0 0 22px;
  padding-left: 1.35rem;
}

.article-body li {
  margin-bottom: 8px;
}

.article-body blockquote {
  margin: 26px 0;
  padding: 16px 20px;
  color: var(--ink);
  background: var(--mist);
  border-left: 3px solid var(--teal);
}

.article-body blockquote p {
  margin: 0;
}

.article-body figure {
  margin: 34px 0;
}

.article-body figure img {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
}

.article-body figcaption {
  margin-top: 8px;
  color: var(--ink-soft);
  font-size: 0.78rem;
}

.table-wrap {
  overflow-x: auto;
  margin: 24px 0;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
}

.article-body table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  background: var(--white);
}

.article-body th,
.article-body td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  font-size: 0.88rem;
}

.article-body th {
  color: var(--ink);
  background: var(--mist);
}

.article-contact {
  margin-top: 40px;
  padding: 20px;
  background: #151c20;
  color: #edf3f4;
  border-radius: var(--r-lg);
}

.article-contact p {
  margin: 8px 0 0;
  color: rgba(237, 243, 244, 0.72);
}

.article-contact a {
  color: var(--mint);
}

.article-boundary {
  margin: 18px 0 0;
  color: var(--ink-soft);
  font-size: 0.78rem;
  line-height: 1.6;
}

.collection-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 36px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.collection-card {
  min-height: 220px;
  padding: 22px;
  background: var(--white);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.collection-card h2 {
  margin: 0 0 12px;
  font-size: 1.04rem;
  line-height: 1.48;
}

.collection-card h2 a:hover {
  color: var(--teal);
}

.collection-card p:last-child {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.86rem;
  line-height: 1.65;
}

.button-arrow::after {
  margin-left: 10px;
  content: "→";
}

.error-page {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 28px;
  background: var(--paper);
}

.error-page main {
  width: min(100%, 620px);
}

.error-page img {
  margin-bottom: 36px;
}

.error-page p:not(.section-index) {
  max-width: 34rem;
  color: var(--ink-soft);
}

@media (max-width: 1080px) {
  .desktop-nav,
  .nav-cta {
    display: none;
  }

  .menu-btn {
    display: grid;
  }

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

  .hero-copy {
    max-width: 720px;
  }

  .brand-hero {
    font-size: 4.5rem;
  }

  .product-stage {
    height: 440px;
  }

  .stage-visual,
  .stage-visual picture,
  .stage-visual img {
    height: 398px;
  }

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

  .evidence-grid > div:first-child {
    padding-left: 20px;
  }

  .evidence-grid > * {
    border-bottom: 1px solid rgba(255, 255, 255, 0.09);
  }

  .workflow,
  .capability-rail,
  .growth-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .growth-item:nth-child(3) {
    border-left: 1px solid var(--line);
  }

  .workflow::before {
    display: none;
  }

  .workflow::after {
    display: none;
  }
}

@media (max-width: 760px) {
  .shell,
  .article-shell {
    width: min(calc(100% - 28px), var(--max));
  }

  .hero {
    padding-top: 28px;
  }

  .brand-hero {
    font-size: 3.6rem;
  }

  .brand-hero em {
    margin-top: 14px;
    font-size: 1.35rem;
  }

  .hero-lede {
    font-size: 0.96rem;
  }

  .product-stage {
    height: 300px;
  }

  .stage-bar {
    grid-template-columns: 42px 1fr;
  }

  .stage-bar > span:not(.stage-status) {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .stage-status {
    display: none;
  }

  .stage-visual,
  .stage-visual picture,
  .stage-visual img {
    height: 258px;
  }

  .evidence-grid,
  .section-head,
  .workflow,
  .capability-rail,
  .decision-list,
  .growth-grid,
  .fit-grid,
  .contact-grid,
  .contact-page-grid,
  .collection-grid {
    grid-template-columns: 1fr;
  }

  .section,
  .contact-band {
    padding: 58px 0;
  }

  .section-head {
    align-items: start;
    margin-bottom: 26px;
  }

  .section-head h2,
  .contact-band h2,
  .decision-band h2,
  .page-main h1,
  .error-page h1 {
    max-width: none;
    font-size: 2.35rem;
  }

  .workflow,
  .capability-rail,
  .decision-list,
  .collection-grid {
    border-left: 0;
  }

  .step {
    display: grid;
    grid-template-columns: 42px 1fr;
    column-gap: 14px;
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
  }

  .step-num {
    grid-row: span 2;
    margin: 0;
  }

  .capability,
  .decision-item,
  .growth-item,
  .collection-card {
    min-height: 0;
    border-left: 0;
    border-right: 0;
  }

  .method-item {
    grid-template-columns: 54px minmax(0, 1fr) 20px;
    gap: 10px;
    padding: 14px 0;
  }

  .contact-panel {
    padding-right: 0;
  }

  .contact-signal {
    padding: 0;
    border-left: 0;
    border-top: 1px solid var(--line-strong);
  }

  .contact-direct {
    position: static;
  }

  .article-topline {
    margin-bottom: 46px;
  }

  .article-layout h1 {
    font-size: 2.55rem;
  }

  .article-deck {
    font-size: 0.96rem;
  }
}

@media (max-width: 520px) {
  .brand-mark {
    width: 38px;
  }

  .brand-hero {
    font-size: 3rem;
  }

  .hero-actions,
  .page-actions {
    display: grid;
  }

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

  .hero-actions .btn {
    padding-inline: 10px;
    font-size: 0.8rem;
  }

  .page-actions {
    grid-template-columns: 1fr;
  }

  .btn {
    width: 100%;
  }

  .hero-notes {
    display: grid;
    gap: 8px;
  }

  .product-stage {
    height: 220px;
  }

  .stage-visual,
  .stage-visual picture,
  .stage-visual img {
    height: 178px;
  }

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

  .growth-grid {
    grid-template-columns: 1fr;
    border-top: 0;
  }

  .growth-item,
  .growth-item:first-child,
  .growth-item:nth-child(3) {
    min-height: 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    border-left: 0;
  }

  .growth-item span {
    margin-bottom: 24px;
  }

  .evidence-grid > div,
  .evidence-link,
  .evidence-grid > div:first-child {
    padding: 16px 0;
    border-right: 0;
  }

  .method-item {
    grid-template-columns: 1fr 20px;
  }

  .method-item > span {
    grid-column: 1 / -1;
  }

  .contact-row {
    grid-template-columns: 58px 1fr;
  }

  .fact-table,
  .fact-table tbody,
  .fact-table tr,
  .fact-table th,
  .fact-table td {
    display: block;
    width: 100%;
  }

  .fact-table th {
    padding-bottom: 5px;
    border-bottom: 0;
  }

  .fact-table td {
    padding-top: 5px;
  }

  .article-topline {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 760px) and (max-height: 780px) {
  .hero {
    padding-top: 20px;
  }

  .hero-grid {
    gap: 14px;
  }

  .hero-lede {
    margin-top: 16px;
  }

  .hero-actions {
    margin-top: 18px;
  }

  .hero-notes {
    margin-top: 16px;
  }

  .product-stage {
    height: 180px;
  }

  .stage-visual,
  .stage-visual picture,
  .stage-visual img {
    height: 138px;
  }
}

@media (max-width: 420px) and (max-height: 650px) {
  .brand-hero {
    font-size: 2.6rem;
  }

  .brand-hero em {
    margin-top: 8px;
    font-size: 1.1rem;
  }

  .kicker {
    margin-bottom: 6px;
  }

  .hero-lede {
    font-size: 0.82rem;
    line-height: 1.45;
  }

  .hero-notes {
    display: none;
  }

  .product-stage {
    height: 138px;
  }

  .stage-visual,
  .stage-visual picture,
  .stage-visual img {
    height: 102px;
  }

  .stage-bar {
    min-height: 36px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal,
  .hero-copy > *,
  .product-stage,
  .mobile-nav,
  .workflow .step,
  .capability-rail .capability {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
  .product-stage {
    will-change: auto;
  }
  .hero-copy > * {
    filter: none !important;
  }
  .stage-status::before,
  .stage-visual::before {
    animation: none !important;
  }
  body:not(.menu-open) .mobile-nav {
    max-height: 0 !important;
    opacity: 0 !important;
  }
}