:root {
  --ink: #102a43;
  --ink-soft: #243b53;
  --muted: #627d98;
  --muted-light: #829ab1;
  --teal: #0e7c7b;
  --teal-dark: #0a5c5b;
  --teal-deep: #073f43;
  --mint: #dff7f2;
  --mint-light: #f1fbf8;
  --orange: #d97706;
  --orange-light: #fff3e3;
  --green: #2f855a;
  --line: #d9e2ec;
  --line-soft: #e8eff4;
  --paper: #f7faf9;
  --white: #ffffff;
  --shadow-sm: 0 10px 30px rgba(16, 42, 67, 0.07);
  --shadow-md: 0 24px 70px rgba(16, 42, 67, 0.12);
  --radius-sm: 14px;
  --radius-md: 22px;
  --radius-lg: 32px;
  --font: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

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

img {
  height: auto;
}

button,
input {
  font: inherit;
}

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

p,
h1,
h2,
h3,
figure,
blockquote {
  margin: 0;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

::selection {
  color: var(--white);
  background: var(--teal);
}

.container {
  width: min(1200px, calc(100% - 48px));
  margin-inline: auto;
}

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

.skip-link {
  position: fixed;
  z-index: 999;
  top: 10px;
  left: 10px;
  padding: 10px 16px;
  color: var(--white);
  background: var(--teal-dark);
  border-radius: 8px;
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  height: 76px;
  border-bottom: 1px solid rgba(217, 226, 236, 0.76);
  background: rgba(247, 250, 249, 0.9);
  backdrop-filter: blur(18px);
  transition: box-shadow 180ms ease, background 180ms ease;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 8px 30px rgba(16, 42, 67, 0.07);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 30px;
}

.brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  position: relative;
  display: inline-block;
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  overflow: hidden;
  background: var(--teal);
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(14, 124, 123, 0.22);
}

.brand-mark span {
  position: absolute;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: rgba(255, 255, 255, 0.94);
  border-radius: 3px;
}

.brand-mark span:nth-child(1) {
  left: 13px;
  transform: skewX(-14deg);
}

.brand-mark span:nth-child(2) {
  left: 20px;
}

.brand-mark span:nth-child(3) {
  left: 27px;
  transform: skewX(14deg);
}

.brand-mark::before,
.brand-mark::after {
  position: absolute;
  left: 8px;
  width: 26px;
  height: 1px;
  content: "";
  background: rgba(255, 255, 255, 0.5);
}

.brand-mark::before {
  top: 15px;
}

.brand-mark::after {
  bottom: 15px;
}

.brand-copy {
  display: grid;
  gap: 1px;
}

.brand-copy strong {
  color: var(--ink);
  font-size: 15px;
  line-height: 1.25;
  letter-spacing: 0.02em;
}

.brand-copy small {
  color: var(--muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(15px, 1.6vw, 25px);
}

.site-nav > a:not(.nav-login) {
  position: relative;
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}

.site-nav > a:not(.nav-login)::after {
  position: absolute;
  right: 0;
  bottom: -7px;
  left: 0;
  height: 2px;
  content: "";
  background: var(--teal);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 180ms ease;
}

.site-nav > a:not(.nav-login):hover,
.site-nav > a:not(.nav-login):focus-visible,
.site-nav > a.is-active {
  color: var(--teal);
}

.site-nav > a:not(.nav-login):hover::after,
.site-nav > a:not(.nav-login):focus-visible::after,
.site-nav > a.is-active::after {
  transform: scaleX(1);
}

.nav-login {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 40px;
  padding: 8px 16px;
  color: var(--white);
  background: var(--teal);
  border-radius: 11px;
  box-shadow: 0 8px 20px rgba(14, 124, 123, 0.2);
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
  transition: background 180ms ease, transform 180ms ease;
}

.nav-login:hover,
.nav-login:focus-visible {
  background: var(--teal-dark);
  transform: translateY(-1px);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 10px;
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 11px;
  cursor: pointer;
}

.menu-toggle span:not(.sr-only) {
  display: block;
  width: 100%;
  height: 2px;
  margin: 4px 0;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 180ms ease, opacity 180ms ease;
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  transform: translateY(6px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(4) {
  transform: translateY(-6px) rotate(-45deg);
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: 760px;
  padding: 72px 0 86px;
  background:
    radial-gradient(circle at 78% 23%, rgba(112, 210, 197, 0.18), transparent 25%),
    radial-gradient(circle at 8% 55%, rgba(244, 180, 94, 0.12), transparent 24%),
    linear-gradient(180deg, #fbfdfc 0%, #f6faf9 72%, var(--paper) 100%);
}

.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  opacity: 0.4;
  background-image:
    linear-gradient(rgba(14, 124, 123, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14, 124, 123, 0.04) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: linear-gradient(to bottom, black, transparent 82%);
}

.hero-orbit {
  position: absolute;
  border: 1px solid rgba(14, 124, 123, 0.11);
  border-radius: 50%;
  pointer-events: none;
}

.hero-orbit::before {
  position: absolute;
  width: 9px;
  height: 9px;
  content: "";
  background: var(--orange);
  border: 3px solid var(--white);
  border-radius: 50%;
  box-shadow: 0 4px 14px rgba(217, 119, 6, 0.3);
}

.hero-orbit-a {
  top: -360px;
  right: -260px;
  width: 830px;
  height: 830px;
}

.hero-orbit-a::before {
  bottom: 120px;
  left: 70px;
}

.hero-orbit-b {
  bottom: -460px;
  left: -340px;
  width: 760px;
  height: 760px;
}

.hero-orbit-b::before {
  top: 115px;
  right: 80px;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  align-items: center;
  grid-template-columns: minmax(0, 1.05fr) minmax(420px, 0.95fr);
  gap: clamp(48px, 6vw, 82px);
}

.hero-copy {
  padding-top: 18px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.eyebrow-dot {
  width: 8px;
  height: 8px;
  background: var(--orange);
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(217, 119, 6, 0.1);
}

.hero-project-title {
  max-width: 610px;
  margin-top: 23px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.03em;
  line-height: 1.7;
}

.hero h1 {
  max-width: 720px;
  margin-top: 12px;
  color: var(--ink);
  font-size: clamp(46px, 5.2vw, 70px);
  font-weight: 800;
  letter-spacing: -0.055em;
  line-height: 1.08;
}

.hero h1 span {
  color: var(--teal);
}

.hero-lead {
  max-width: 630px;
  margin-top: 25px;
  color: var(--ink-soft);
  font-size: 18px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 13px;
  margin-top: 31px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 11px 21px;
  border: 1px solid transparent;
  border-radius: 12px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 700;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease, border-color 180ms ease;
}

.button svg {
  width: 18px;
  height: 18px;
  margin-left: 8px;
  fill: currentColor;
}

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

.button-primary {
  color: var(--white);
  background: var(--teal);
  box-shadow: 0 13px 30px rgba(14, 124, 123, 0.22);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--teal-dark);
  box-shadow: 0 16px 34px rgba(14, 124, 123, 0.27);
}

.button-secondary {
  color: var(--ink);
  background: var(--white);
  border-color: var(--line);
  box-shadow: 0 8px 24px rgba(16, 42, 67, 0.06);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  border-color: #a9d8d6;
  box-shadow: 0 12px 28px rgba(16, 42, 67, 0.09);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

.hero-tags li {
  padding: 6px 11px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  border-radius: 99px;
  font-size: 12px;
  font-weight: 700;
}

.hero-visual {
  position: relative;
  isolation: isolate;
}

.hero-stage {
  position: relative;
  z-index: 2;
  padding: 15px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(195, 214, 225, 0.82);
  border-radius: 25px;
  box-shadow: 0 30px 80px rgba(25, 77, 82, 0.16);
  backdrop-filter: blur(14px);
}

.stage-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 5px 4px 13px;
}

.stage-head > div {
  display: grid;
  gap: 2px;
}

.stage-kicker {
  color: var(--teal);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.stage-head strong {
  color: var(--ink);
  font-size: 13px;
}

.live-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex: 0 0 auto;
  padding: 5px 9px;
  color: var(--teal-dark);
  background: var(--mint-light);
  border: 1px solid #bfe9e2;
  border-radius: 99px;
  font-size: 10px;
  font-weight: 700;
}

.live-pill i {
  width: 6px;
  height: 6px;
  background: #18a77b;
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(24, 167, 123, 0.11);
}

.stage-image {
  overflow: hidden;
  background: #edf3f4;
  border: 1px solid var(--line-soft);
  border-radius: 16px;
  aspect-ratio: 16 / 9;
}

.stage-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.stage-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 13px;
  overflow: hidden;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: 12px;
}

.stage-meta div {
  display: grid;
  gap: 1px;
  padding: 10px 12px;
  background: var(--white);
}

.stage-meta span {
  color: var(--muted);
  font-size: 9px;
}

.stage-meta strong {
  color: var(--ink);
  font-size: 17px;
}

.float-note {
  position: absolute;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 9px;
  min-width: 198px;
  padding: 11px 13px;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(12px);
}

.float-note-top {
  top: 82px;
  right: -31px;
}

.float-note-bottom {
  bottom: 72px;
  left: -35px;
}

.float-note-icon {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  flex: 0 0 32px;
  color: var(--white);
  background: var(--orange);
  border-radius: 10px;
  font-size: 11px;
  font-weight: 800;
}

.float-note-bottom .float-note-icon {
  background: var(--teal);
}

.float-note p {
  display: grid;
  line-height: 1.35;
}

.float-note strong {
  color: var(--ink);
  font-size: 11px;
}

.float-note small {
  color: var(--muted);
  font-size: 9px;
}

.metric-ribbon {
  position: relative;
  z-index: 2;
  margin-top: -37px;
}

.metric-grid {
  display: grid;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow-md);
  grid-template-columns: repeat(4, 1fr);
}

.metric-item {
  position: relative;
  padding: 25px 28px;
}

.metric-item + .metric-item::before {
  position: absolute;
  top: 24px;
  bottom: 24px;
  left: 0;
  width: 1px;
  content: "";
  background: var(--line);
}

.metric-item strong {
  display: flex;
  align-items: baseline;
  color: var(--teal);
  font-size: 31px;
  line-height: 1.1;
}

.metric-item strong span {
  margin-left: 5px;
  color: var(--ink);
  font-size: 13px;
}

.metric-item p {
  margin-top: 7px;
  color: var(--muted);
  font-size: 12px;
}

.section {
  padding: 112px 0;
}

.section-soft {
  background: #f0f7f5;
}

.section-dark {
  color: var(--white);
  background:
    radial-gradient(circle at 88% 18%, rgba(74, 189, 171, 0.18), transparent 24%),
    linear-gradient(135deg, #0a3338 0%, #0a5c5b 58%, #063c45 100%);
}

.section-heading {
  margin-bottom: 48px;
}

.split-heading {
  display: grid;
  align-items: end;
  grid-template-columns: minmax(0, 1.12fr) minmax(300px, 0.68fr);
  gap: clamp(36px, 7vw, 110px);
}

.section-index {
  margin-bottom: 13px;
  color: var(--teal);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.section-index.light {
  color: #aee9e2;
}

.section h2,
.scenario-band h2,
.access-card h2 {
  color: var(--ink);
  font-size: clamp(31px, 3.5vw, 46px);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.22;
}

.section-heading h2 {
  max-width: 780px;
}

.section-intro {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
}

.focus-quote {
  position: relative;
  display: grid;
  align-items: center;
  min-height: 190px;
  padding: 35px 55px 35px 92px;
  overflow: hidden;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(223, 247, 242, 0.92), rgba(255, 255, 255, 0.9)),
    var(--white);
  border: 1px solid #cde9e5;
  border-radius: var(--radius-md);
  grid-template-columns: 1fr;
}

.quote-mark {
  position: absolute;
  top: 15px;
  left: 31px;
  color: var(--teal);
  font-family: Georgia, serif;
  font-size: 92px;
  font-weight: 700;
  line-height: 1;
  opacity: 0.17;
}

.focus-quote p {
  max-width: 980px;
  font-size: clamp(21px, 2.2vw, 28px);
  font-weight: 700;
  line-height: 1.55;
}

.focus-quote footer {
  margin-top: 13px;
  color: var(--muted);
  font-size: 13px;
}

.challenge-grid {
  display: grid;
  gap: 16px;
  margin-top: 22px;
  grid-template-columns: repeat(4, 1fr);
}

.challenge-card {
  position: relative;
  min-height: 190px;
  padding: 27px 24px 24px;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  transition: transform 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
}

.challenge-card::after {
  position: absolute;
  right: -30px;
  bottom: -42px;
  width: 105px;
  height: 105px;
  content: "";
  border: 18px solid rgba(14, 124, 123, 0.045);
  border-radius: 50%;
}

.challenge-card:hover {
  border-color: #abd9d5;
  box-shadow: 0 20px 42px rgba(16, 42, 67, 0.1);
  transform: translateY(-4px);
}

.card-index {
  color: var(--orange);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.challenge-card h3 {
  margin-top: 31px;
  color: var(--ink);
  font-size: 19px;
}

.challenge-card p {
  margin-top: 9px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}

.feature-grid {
  display: grid;
  align-items: center;
  grid-template-columns: minmax(0, 0.98fr) minmax(0, 1.02fr);
  gap: clamp(55px, 7vw, 96px);
}

.feature-grid-reverse {
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
}

.browser-frame {
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.browser-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 40px;
  padding: 10px 14px;
  color: var(--muted);
  background: #f4f8f9;
  border-bottom: 1px solid var(--line);
  font-size: 10px;
}

.browser-bar i {
  width: 7px;
  height: 7px;
  background: #cbd8e2;
  border-radius: 50%;
}

.browser-bar i:first-child {
  background: #f0a36b;
}

.browser-bar i:nth-child(2) {
  background: #efc46d;
}

.browser-bar i:nth-child(3) {
  background: #72bda6;
}

.browser-bar span {
  margin-left: 7px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.browser-frame img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
}

.visual-caption {
  margin-top: 16px;
  padding: 0 4px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.75;
}

.visual-caption span {
  display: inline-block;
  margin-right: 8px;
  padding: 3px 8px;
  color: var(--teal-dark);
  background: var(--mint);
  border-radius: 99px;
  font-size: 10px;
  font-weight: 800;
}

.feature-copy .section-intro {
  margin-top: 19px;
}

.capability-list {
  display: grid;
  gap: 0;
  margin-top: 31px;
}

.capability-item {
  display: grid;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  grid-template-columns: 48px 1fr;
  gap: 14px;
}

.capability-number {
  color: var(--teal);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.capability-item h3 {
  color: var(--ink);
  font-size: 16px;
}

.capability-item p {
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.validation-card {
  margin-top: 23px;
  padding: 19px 21px;
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 4px solid var(--orange);
  border-radius: 4px var(--radius-sm) var(--radius-sm) 4px;
  box-shadow: var(--shadow-sm);
}

.validation-heading {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: var(--muted);
  font-size: 11px;
}

.validation-heading strong {
  color: var(--orange);
}

.validation-metrics {
  display: flex;
  gap: 32px;
  margin-top: 10px;
}

.validation-metrics div {
  display: flex;
  align-items: baseline;
  gap: 7px;
}

.validation-metrics strong {
  color: var(--ink);
  font-size: 26px;
}

.validation-metrics span {
  color: var(--muted);
  font-size: 10px;
}

.validation-card > p {
  margin-top: 6px;
  color: var(--muted);
  font-size: 11px;
}

.path-layout {
  display: grid;
  align-items: start;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 38px;
}

.path-visual {
  position: sticky;
  top: 108px;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.path-visual img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
}

.path-visual figcaption {
  padding: 14px 17px;
  color: var(--muted);
  background: #f8fbfb;
  border-top: 1px solid var(--line);
  font-size: 11px;
}

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

.module-card {
  min-height: 228px;
  padding: 23px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.module-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.module-head span {
  color: var(--teal);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.module-head small {
  color: var(--muted-light);
  font-size: 10px;
}

.module-card h3 {
  margin-top: 21px;
  color: var(--ink);
  font-size: 18px;
}

.module-card p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.8;
}

.module-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 18px;
}

.module-tags span {
  padding: 3px 7px;
  color: var(--teal-dark);
  background: var(--mint-light);
  border: 1px solid #d4efeb;
  border-radius: 99px;
  font-size: 9px;
  font-weight: 700;
}

.scenario-band {
  padding: 72px 0;
  color: var(--white);
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.045) 0 1px, transparent 1px 44px),
    linear-gradient(30deg, rgba(255, 255, 255, 0.03) 0 1px, transparent 1px 44px),
    var(--teal-dark);
}

.scenario-grid {
  display: grid;
  align-items: center;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 64px;
}

.scenario-band h2 {
  color: var(--white);
}

.scenario-band > .container > div:first-child > p:last-child {
  max-width: 570px;
  margin-top: 14px;
  color: #ccece8;
  font-size: 14px;
}

.scenario-facts {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 16px;
}

.scenario-facts div {
  display: grid;
  justify-items: center;
  padding: 22px 10px;
  text-align: center;
}

.scenario-facts div + div {
  border-left: 1px solid rgba(255, 255, 255, 0.16);
}

.scenario-facts strong {
  color: #fff;
  font-size: clamp(25px, 3vw, 35px);
  line-height: 1.1;
}

.scenario-facts span {
  margin-top: 6px;
  color: #bee2de;
  font-size: 10px;
}

.mode-grid {
  display: grid;
  gap: 12px;
  margin-top: 29px;
  grid-template-columns: repeat(2, 1fr);
}

.mode-card {
  padding: 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
}

.mode-card > span {
  color: var(--orange);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.mode-card h3 {
  margin-top: 7px;
  color: var(--ink);
  font-size: 16px;
}

.mode-card p {
  margin-top: 6px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.65;
}

.ai-heading {
  display: grid;
  align-items: end;
  grid-template-columns: minmax(0, 1.12fr) minmax(300px, 0.58fr);
  gap: 75px;
}

.ai-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(3, 1fr);
}

.ai-card {
  position: relative;
  min-height: 205px;
  padding: 24px;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.ai-card::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  content: "";
  background: linear-gradient(90deg, var(--teal), #96ddd1, transparent);
  transform: scaleX(0.32);
  transform-origin: left;
  transition: transform 240ms ease;
}

.ai-card:hover::before {
  transform: scaleX(1);
}

.ai-number {
  color: var(--teal);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.ai-card h3 {
  margin-top: 23px;
  color: var(--ink);
  font-size: 18px;
}

.ai-card p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.75;
}

.ai-card small {
  display: inline-block;
  margin-top: 14px;
  padding: 3px 8px;
  color: var(--teal-dark);
  background: var(--mint-light);
  border-radius: 99px;
  font-size: 9px;
  font-weight: 700;
}

.ai-protocol {
  display: grid;
  align-items: stretch;
  margin-top: 24px;
  overflow: hidden;
  color: var(--white);
  background: var(--ink);
  border-radius: var(--radius-md);
  grid-template-columns: 0.85fr 1.15fr;
}

.protocol-intro {
  padding: 29px 31px;
  background: linear-gradient(135deg, #0e7c7b, #095958);
}

.protocol-label {
  color: #aee5df;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.13em;
}

.protocol-intro h3 {
  margin-top: 11px;
  font-size: 21px;
}

.protocol-intro p {
  margin-top: 8px;
  color: #d3ece9;
  font-size: 11px;
  line-height: 1.75;
}

.protocol-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.protocol-steps div {
  display: grid;
  align-content: center;
  min-height: 154px;
  padding: 20px 18px;
}

.protocol-steps div + div {
  border-left: 1px solid rgba(255, 255, 255, 0.12);
}

.protocol-steps span {
  color: #7ee0d4;
  font-size: 10px;
  font-weight: 800;
}

.protocol-steps strong {
  margin-top: 12px;
  font-size: 14px;
}

.protocol-steps small {
  margin-top: 4px;
  color: #a9bfc9;
  font-size: 9px;
  line-height: 1.5;
}

.section-heading-dark .section-index {
  color: #7ee0d4;
}

.section-heading-dark h2 {
  color: var(--white);
}

.section-heading-dark .section-intro {
  color: #b9d5d7;
}

.result-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(4, 1fr);
}

.result-card {
  min-height: 210px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.075);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(6px);
}

.result-card-wide {
  min-height: 260px;
  grid-column: span 2;
  grid-row: span 2;
  background: rgba(255, 255, 255, 0.1);
}

.result-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: #b8dcdd;
  font-size: 11px;
}

.result-label {
  color: #a9d4d2;
  font-size: 11px;
}

.result-value {
  display: flex;
  align-items: baseline;
  margin-top: 38px;
  color: var(--white);
  font-size: clamp(42px, 4.9vw, 65px);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 1;
}

.result-value span {
  margin-left: 2px;
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0;
}

.result-value i {
  margin: 0 14px;
  color: #79d9cf;
  font-style: normal;
  font-weight: 300;
}

.result-emphasis {
  display: block;
  margin-top: 14px;
  color: #ffd08c;
  font-size: 18px;
}

.result-card > strong:not(.result-emphasis) {
  display: block;
  margin-top: 33px;
  color: var(--white);
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.1;
}

.result-card > strong small {
  color: #a8cacc;
  font-size: 13px;
  font-weight: 500;
}

.result-card p {
  margin-top: 12px;
  color: #b8d2d4;
  font-size: 11px;
  line-height: 1.7;
}

.result-card-wide p {
  max-width: 500px;
  font-size: 12px;
}

.result-note {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 20px;
  color: #a9c2c5;
  font-size: 10px;
}

.result-note span {
  display: grid;
  place-items: center;
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  color: var(--teal-deep);
  background: #a9ded8;
  border-radius: 50%;
  font-size: 10px;
  font-weight: 800;
}

.industry-flow {
  display: grid;
  align-items: stretch;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  gap: 12px;
}

.flow-step {
  min-height: 210px;
  padding: 26px 23px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.flow-step span {
  color: var(--orange);
  font-size: 11px;
  font-weight: 800;
}

.flow-step h3 {
  margin-top: 29px;
  color: var(--ink);
  font-size: 19px;
}

.flow-step p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.75;
}

.flow-arrow {
  display: grid;
  place-items: center;
  color: var(--teal);
  font-size: 20px;
}

.industry-values {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 22px;
  padding: 18px 20px;
  background: var(--mint-light);
  border: 1px solid #d1ece8;
  border-radius: 12px;
}

.industry-values span {
  padding: 4px 10px;
  color: var(--teal-dark);
  background: var(--white);
  border: 1px solid #cfe9e5;
  border-radius: 99px;
  font-size: 10px;
  font-weight: 800;
}

.industry-values p {
  margin-left: auto;
  color: var(--muted);
  font-size: 12px;
}

.course-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, 1fr);
}

.course-card {
  position: relative;
  min-height: 235px;
  padding: 25px 24px;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.course-card::after {
  position: absolute;
  right: -18px;
  bottom: -32px;
  width: 120px;
  height: 120px;
  content: "";
  border: 18px solid rgba(14, 124, 123, 0.05);
  border-radius: 50%;
}

.course-code {
  color: var(--muted-light);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.course-card > strong {
  display: block;
  margin-top: 22px;
  color: var(--teal);
  font-size: 43px;
  line-height: 1;
}

.course-card > strong span {
  margin-left: 3px;
  font-size: 13px;
}

.course-card h3 {
  margin-top: 19px;
  color: var(--ink);
  font-size: 18px;
}

.course-card p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
}

.course-bottom {
  display: grid;
  gap: 16px;
  margin-top: 18px;
  grid-template-columns: 0.72fr 1.28fr;
}

.experiment-summary,
.assessment {
  padding: 25px 27px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.experiment-summary strong {
  display: block;
  margin-top: 7px;
  color: var(--ink);
  font-size: 34px;
}

.experiment-summary span {
  color: var(--muted);
  font-size: 12px;
}

.assessment-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.assessment-head strong {
  color: var(--ink);
  font-size: 16px;
}

.assessment-head span {
  color: var(--teal);
  font-size: 12px;
  font-weight: 800;
}

.assessment-row {
  display: grid;
  align-items: center;
  grid-template-columns: 92px 1fr 38px;
  gap: 12px;
  padding: 5px 0;
}

.assessment-row span,
.assessment-row strong {
  color: var(--muted);
  font-size: 10px;
}

.assessment-row strong {
  color: var(--ink);
  text-align: right;
}

.assessment-row i {
  position: relative;
  height: 5px;
  overflow: hidden;
  background: #e8f0f1;
  border-radius: 99px;
}

.assessment-row i::before {
  display: block;
  width: var(--score);
  height: 100%;
  content: "";
  background: linear-gradient(90deg, var(--teal), #61c4b6);
  border-radius: inherit;
}

.team-grid {
  display: grid;
  gap: 15px;
  grid-template-columns: repeat(5, 1fr);
}

.team-card {
  min-height: 285px;
  padding: 22px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.team-card-lead {
  background: linear-gradient(145deg, #f2fbf9, #ffffff 62%);
  border-color: #c3e4df;
}

.team-card-enterprise {
  background: linear-gradient(145deg, #fff9f0, #ffffff 62%);
  border-color: #f1ddc2;
}

.team-initial {
  display: grid;
  place-items: center;
  width: 50px;
  height: 50px;
  color: var(--white);
  background: var(--teal);
  border-radius: 15px;
  font-size: 20px;
  font-weight: 700;
}

.team-card-enterprise .team-initial {
  background: var(--orange);
}

.team-role {
  margin-top: 21px;
  color: var(--teal);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.05em;
}

.team-card-enterprise .team-role {
  color: var(--orange);
}

.team-card h3 {
  margin-top: 6px;
  color: var(--ink);
  font-size: 20px;
}

.team-card p {
  margin-top: 10px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.75;
}

.video-section {
  background:
    radial-gradient(circle at 10% 65%, rgba(217, 119, 6, 0.08), transparent 20%),
    #f4f8f7;
}

.video-heading {
  display: grid;
  align-items: end;
  grid-template-columns: 1fr auto;
  gap: 40px;
}

.video-heading > p {
  max-width: 390px;
  color: var(--muted);
  font-size: 12px;
  text-align: right;
}

.video-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(2, 1fr);
}

.video-card {
  padding: 12px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.video-player {
  position: relative;
  overflow: hidden;
  background: #071c24;
  border-radius: 15px;
  aspect-ratio: 16 / 9;
}

.video-player video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #071c24;
}

.video-badge {
  position: absolute;
  top: 13px;
  left: 13px;
  padding: 5px 10px;
  color: var(--teal-dark);
  background: rgba(240, 255, 252, 0.92);
  border-radius: 99px;
  box-shadow: 0 5px 18px rgba(0, 0, 0, 0.14);
  font-size: 9px;
  font-weight: 800;
  pointer-events: none;
  backdrop-filter: blur(8px);
}

.video-badge-orange {
  color: #9a4e00;
  background: rgba(255, 246, 231, 0.94);
}

.video-copy {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 8px 0;
}

.video-number {
  color: var(--teal);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.09em;
}

.video-copy h3 {
  margin-top: 3px;
  color: var(--ink);
  font-size: 19px;
}

.video-duration {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

.video-card > p {
  padding: 8px 8px 8px;
  color: var(--muted);
  font-size: 12px;
}

.access-section {
  padding: 25px 0 100px;
  background: #f4f8f7;
}

.access-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 50px;
  padding: 43px 48px;
  color: var(--white);
  background:
    radial-gradient(circle at 83% 18%, rgba(255, 255, 255, 0.14), transparent 23%),
    linear-gradient(125deg, #0e7c7b, #09605f 70%, #0b4d51);
  border-radius: var(--radius-lg);
  box-shadow: 0 30px 70px rgba(8, 78, 78, 0.2);
}

.access-card .section-index {
  color: #9fe3db;
}

.access-card h2 {
  color: var(--white);
}

.access-card p:not(.section-index) {
  max-width: 760px;
  margin-top: 12px;
  color: #ccebE8;
  font-size: 13px;
}

.button-light {
  flex: 0 0 auto;
  color: var(--teal-dark);
  background: var(--white);
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.12);
}

.button-light:hover,
.button-light:focus-visible {
  background: #e8faf6;
}

.site-footer {
  padding: 43px 0;
  color: #b8cdd2;
  background: #082f36;
}

.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark-light {
  background: rgba(255, 255, 255, 0.1);
  box-shadow: none;
}

.footer-brand strong {
  color: var(--white);
  font-size: 14px;
}

.footer-brand p,
.footer-meta p {
  font-size: 10px;
}

.footer-brand p {
  margin-top: 3px;
  color: #8fb5ba;
}

.footer-meta {
  text-align: right;
}

.footer-meta p + p {
  margin-top: 2px;
}

.back-to-top {
  position: fixed;
  z-index: 90;
  right: 22px;
  bottom: 22px;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  color: var(--white);
  background: var(--teal);
  border: 0;
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(14, 124, 123, 0.25);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 180ms ease, transform 180ms ease, background 180ms ease;
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover,
.back-to-top:focus-visible {
  background: var(--teal-dark);
}

body.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 600ms ease, transform 600ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

body.js-reveal [data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Login / register */
.auth-page {
  min-height: 100vh;
  background: #f3f9f7;
}

.auth-header {
  position: relative;
  z-index: 5;
  height: 82px;
  border-bottom: 1px solid rgba(217, 226, 236, 0.72);
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(16px);
}

.auth-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.auth-back:hover,
.auth-back:focus-visible {
  color: var(--teal);
}

.auth-main {
  position: relative;
  min-height: calc(100vh - 82px);
  padding: 48px 0;
  overflow: hidden;
}

.auth-grid-bg {
  position: absolute;
  inset: 0;
  opacity: 0.5;
  background-image:
    linear-gradient(rgba(14, 124, 123, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14, 124, 123, 0.045) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(circle at center, black, transparent 76%);
}

.auth-layout {
  position: relative;
  z-index: 1;
  display: grid;
  align-items: start;
  grid-template-columns: minmax(0, 1.06fr) minmax(390px, 0.64fr);
  gap: 72px;
}

.auth-intro {
  padding-top: 25px;
}

.auth-intro h1 {
  max-width: 720px;
  margin-top: 24px;
  color: var(--ink);
  font-size: clamp(42px, 5.1vw, 66px);
  font-weight: 800;
  letter-spacing: -0.055em;
  line-height: 1.14;
}

.auth-intro h1 span {
  color: var(--teal);
}

.auth-intro > p:not(.eyebrow) {
  max-width: 620px;
  margin-top: 22px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
}

.auth-feature-list {
  display: grid;
  gap: 0;
  max-width: 660px;
  margin-top: 30px;
}

.auth-feature-list li {
  display: grid;
  align-items: center;
  padding: 13px 0;
  border-top: 1px solid var(--line);
  grid-template-columns: 42px 100px 1fr;
  gap: 12px;
}

.auth-feature-list > li > span {
  color: var(--orange);
  font-size: 10px;
  font-weight: 800;
}

.auth-feature-list strong {
  color: var(--ink);
  font-size: 13px;
}

.auth-feature-list small {
  color: var(--muted);
  font-size: 11px;
}

.auth-visual {
  max-width: 640px;
  margin-top: 28px;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow-md);
}

.auth-visual img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
}

.auth-card {
  position: sticky;
  top: 34px;
  padding: 25px 28px 23px;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--line);
  border-radius: 26px;
  box-shadow: 0 30px 80px rgba(16, 42, 67, 0.14);
  backdrop-filter: blur(18px);
}

.auth-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.auth-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--teal);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.09em;
}

.auth-status i {
  width: 7px;
  height: 7px;
  background: #12a578;
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(18, 165, 120, 0.1);
}

.auth-version {
  color: var(--muted-light);
  font-size: 9px;
  font-weight: 700;
}

.auth-tabs {
  display: grid;
  margin-top: 24px;
  padding: 4px;
  background: #edf4f3;
  border-radius: 12px;
  grid-template-columns: 1fr 1fr;
}

.auth-tab {
  padding: 9px 12px;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: 9px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
}

.auth-tab.is-active {
  color: var(--teal-dark);
  background: var(--white);
  box-shadow: 0 4px 12px rgba(16, 42, 67, 0.08);
}

.auth-panel {
  margin-top: 17px;
}

.preview-form {
  display: grid;
  gap: 11px;
  margin: 0;
  padding: 0;
  border: 0;
}

.preview-form label {
  display: grid;
  gap: 5px;
  color: var(--ink-soft);
  font-size: 10px;
  font-weight: 700;
}

.preview-form input {
  width: 100%;
  min-height: 43px;
  padding: 9px 12px;
  color: var(--muted);
  background: #f8fbfb;
  border: 1px solid var(--line);
  border-radius: 9px;
  font-size: 12px;
}

.coming-soon {
  margin-top: 18px;
  padding-top: 22px;
  text-align: center;
  border-top: 1px dashed var(--line);
}

.coming-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin: 0 auto;
  color: var(--orange);
  background: var(--orange-light);
  border-radius: 15px;
}

.coming-icon svg {
  width: 23px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.coming-soon h2 {
  margin-top: 15px;
  color: var(--ink);
  font-size: 21px;
  line-height: 1.35;
}

.coming-soon > p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.7;
}

.button-full {
  width: 100%;
  min-height: 43px;
  margin-top: 16px;
  font-size: 12px;
}

.button-full + .button-full {
  margin-top: 8px;
}

.auth-notice {
  min-height: 18px;
  color: var(--teal) !important;
  font-weight: 700;
}

.auth-privacy {
  margin-top: 17px;
  color: var(--muted-light);
  font-size: 9px;
  line-height: 1.6;
  text-align: center;
}

.auth-footer {
  padding: 21px 0;
  color: #7c9ba2;
  background: #082f36;
  font-size: 9px;
}

.auth-footer .container {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

@media (max-width: 1120px) {
  .site-nav {
    gap: 14px;
  }

  .site-nav > a:not(.nav-login) {
    font-size: 12px;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 0.98fr) minmax(380px, 1.02fr);
    gap: 44px;
  }

  .float-note-top {
    right: -12px;
  }

  .float-note-bottom {
    left: -15px;
  }

  .feature-grid,
  .feature-grid-reverse,
  .path-layout,
  .scenario-grid,
  .auth-layout {
    gap: 42px;
  }

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

  .auth-layout {
    grid-template-columns: minmax(0, 1fr) minmax(360px, 0.72fr);
  }
}

@media (max-width: 960px) {
  .site-header {
    height: 70px;
  }

  .menu-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    z-index: 99;
    top: 70px;
    right: 0;
    bottom: 0;
    left: 0;
    display: flex;
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    padding: 20px 24px 35px;
    overflow-y: auto;
    background: rgba(255, 255, 255, 0.98);
    border-top: 1px solid var(--line);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 180ms ease, transform 180ms ease;
  }

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

  .site-nav > a:not(.nav-login) {
    padding: 14px 5px;
    border-bottom: 1px solid var(--line-soft);
    font-size: 15px;
  }

  .site-nav > a:not(.nav-login)::after {
    display: none;
  }

  .nav-login {
    margin-top: 20px;
    min-height: 48px;
  }

  .hero {
    min-height: auto;
    padding-top: 58px;
  }

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

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

  .hero-visual {
    max-width: 720px;
    margin: 5px auto 0;
  }

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

  .metric-item:nth-child(3)::before {
    display: none;
  }

  .metric-item:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }

  .split-heading,
  .ai-heading,
  .video-heading {
    align-items: start;
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .video-heading > p {
    max-width: 560px;
    text-align: left;
  }

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

  .feature-grid,
  .feature-grid-reverse,
  .path-layout,
  .scenario-grid {
    grid-template-columns: 1fr;
  }

  .feature-grid-reverse .feature-copy {
    order: 2;
  }

  .feature-grid-reverse .feature-visual {
    order: 1;
  }

  .path-visual {
    position: static;
  }

  .scenario-grid {
    gap: 30px;
  }

  .ai-heading {
    margin-bottom: 40px;
  }

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

  .ai-protocol {
    grid-template-columns: 1fr;
  }

  .protocol-steps {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
  }

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

  .result-card-wide {
    grid-column: span 2;
    grid-row: auto;
  }

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

  .flow-arrow {
    display: none;
  }

  .industry-values {
    flex-wrap: wrap;
  }

  .industry-values p {
    width: 100%;
    margin: 5px 0 0;
  }

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

  .access-card {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-grid {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-meta {
    text-align: left;
  }

  .auth-layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .auth-intro {
    padding-top: 0;
  }

  .auth-card {
    position: static;
    max-width: 590px;
  }
}

@media (max-width: 700px) {
  .container {
    width: min(100% - 32px, 1200px);
  }

  .brand-copy strong {
    font-size: 13px;
  }

  .brand-copy small {
    font-size: 8px;
  }

  .hero {
    padding: 46px 0 68px;
  }

  .hero h1 {
    font-size: clamp(38px, 11vw, 54px);
  }

  .hero-lead {
    font-size: 15px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-actions .button {
    width: 100%;
  }

  .float-note {
    display: none;
  }

  .stage-head strong {
    font-size: 11px;
  }

  .stage-meta div {
    padding: 8px;
  }

  .stage-meta strong {
    font-size: 14px;
  }

  .metric-ribbon {
    margin-top: -25px;
  }

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

  .metric-item + .metric-item::before {
    top: 0;
    right: 22px;
    bottom: auto;
    left: 22px;
    width: auto;
    height: 1px;
  }

  .metric-item:nth-child(3)::before {
    display: block;
  }

  .metric-item:nth-child(n + 2) {
    border-top: 0;
  }

  .section {
    padding: 82px 0;
  }

  .section h2,
  .scenario-band h2,
  .access-card h2 {
    font-size: clamp(28px, 9vw, 39px);
  }

  .focus-quote {
    padding: 30px 26px 28px 57px;
  }

  .focus-quote p {
    font-size: 19px;
  }

  .quote-mark {
    left: 13px;
    font-size: 74px;
  }

  .challenge-grid,
  .module-list,
  .mode-grid,
  .ai-grid,
  .course-grid,
  .course-bottom,
  .result-grid,
  .industry-flow,
  .team-grid {
    grid-template-columns: 1fr;
  }

  .challenge-card {
    min-height: 170px;
  }

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

  .scenario-facts div {
    border-top: 1px solid rgba(255, 255, 255, 0.16);
  }

  .scenario-facts div:nth-child(odd) {
    border-left: 0;
  }

  .scenario-facts div:nth-child(-n + 2) {
    border-top: 0;
  }

  .scenario-facts div:last-child {
    grid-column: span 2;
  }

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

  .protocol-steps div:nth-child(3) {
    border-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
  }

  .protocol-steps div:nth-child(4) {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
  }

  .result-card-wide {
    grid-column: auto;
  }

  .result-value {
    font-size: clamp(38px, 12vw, 55px);
  }

  .result-value i {
    margin: 0 8px;
  }

  .access-section {
    padding-bottom: 70px;
  }

  .access-card {
    padding: 33px 27px;
    border-radius: 23px;
  }

  .footer-brand {
    align-items: flex-start;
  }

  .footer-brand strong {
    line-height: 1.5;
  }

  .auth-main {
    padding: 30px 0 42px;
  }

  .auth-back {
    font-size: 11px;
  }

  .auth-intro h1 {
    font-size: clamp(36px, 10.5vw, 50px);
  }

  .auth-intro > p:not(.eyebrow) {
    font-size: 14px;
  }

  .auth-feature-list li {
    grid-template-columns: 34px 88px 1fr;
  }

  .auth-card {
    padding: 22px 20px;
    border-radius: 21px;
  }

  .auth-footer .container {
    flex-direction: column;
    gap: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  body.js-reveal [data-reveal] {
    opacity: 1;
    transform: none;
  }
}