:root {
  --bg: #eef4fb;
  --text: #112444;
  --muted: #677892;
  --line: rgba(17, 36, 68, 0.09);
  --line-bright: rgba(255, 255, 255, 0.56);
  --primary: #2b6dff;
  --primary-strong: #1746b7;
  --cyan: #80e2d4;
  --pink: #f4b8ff;
  --gold: #ffd89b;
  --shadow: 0 34px 90px rgba(24, 45, 88, 0.14);
  --shadow-soft: 0 16px 42px rgba(31, 57, 108, 0.1);
  --radius-xl: 40px;
  --radius-lg: 28px;
  --radius-md: 22px;
  --container: 1240px;
  --mx: 50%;
  --my: 50%;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: "Manrope", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 10%, rgba(43, 109, 255, 0.14), transparent 24%),
    radial-gradient(circle at 86% 10%, rgba(128, 226, 212, 0.16), transparent 18%),
    linear-gradient(180deg, #f9fbff 0%, #edf4fb 100%);
}

body.page-loaded .page-enter {
  opacity: 1;
  transform: translateY(0) scale(1);
}

body.menu-open {
  overflow: hidden;
}

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

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

.background-scene {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  background:
    radial-gradient(circle at var(--mx) var(--my), rgba(255, 255, 255, 0.32), transparent 20%);
}

.aurora,
.grid-glow,
.noise-layer {
  position: absolute;
  inset: 0;
}

.aurora {
  filter: blur(34px);
  transition: transform 0.18s ease-out;
}

.aurora-a {
  background:
    radial-gradient(circle at 18% 24%, rgba(43, 109, 255, 0.18), transparent 22%),
    radial-gradient(circle at 72% 20%, rgba(244, 184, 255, 0.14), transparent 18%);
  transform: translate3d(calc((var(--mx) - 50%) * -0.04), calc((var(--my) - 50%) * -0.03), 0);
}

.aurora-b {
  background:
    radial-gradient(circle at 78% 54%, rgba(128, 226, 212, 0.18), transparent 20%),
    radial-gradient(circle at 36% 72%, rgba(43, 109, 255, 0.12), transparent 18%);
  transform: translate3d(calc((var(--mx) - 50%) * 0.03), calc((var(--my) - 50%) * 0.02), 0);
}

.aurora-c {
  background:
    radial-gradient(circle at 56% 38%, rgba(255, 216, 155, 0.12), transparent 16%),
    radial-gradient(circle at 52% 88%, rgba(244, 184, 255, 0.12), transparent 18%);
  transform: translate3d(calc((var(--mx) - 50%) * -0.02), calc((var(--my) - 50%) * 0.04), 0);
}

.grid-glow {
  background-image:
    linear-gradient(rgba(43, 109, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(43, 109, 255, 0.06) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.38), rgba(0, 0, 0, 0.12));
  opacity: 0.4;
}

.noise-layer {
  opacity: 0.08;
  background-image:
    radial-gradient(circle at 20% 20%, rgba(17, 36, 68, 0.4) 0, transparent 1px),
    radial-gradient(circle at 80% 60%, rgba(17, 36, 68, 0.35) 0, transparent 1px),
    radial-gradient(circle at 40% 80%, rgba(17, 36, 68, 0.28) 0, transparent 1px);
  background-size: 14px 14px, 18px 18px, 22px 22px;
}

.site-shell {
  position: relative;
  z-index: 1;
  overflow: hidden;
}

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

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0 8px;
  border-radius: 999px;
  margin-top: 16px;
  padding-inline: 20px;
}

.glass,
.glass-dark {
  position: relative;
  overflow: hidden;
}

.glass {
  border: 1px solid var(--line-bright);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.56), rgba(246, 249, 255, 0.32)),
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.42), transparent 38%);
  box-shadow:
    var(--shadow),
    inset 0 1px 0 rgba(255, 255, 255, 0.88),
    inset 0 -1px 0 rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(30px) saturate(150%);
  -webkit-backdrop-filter: blur(30px) saturate(150%);
}

.glass::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at var(--mx) var(--my), rgba(255, 255, 255, 0.34), transparent 24%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.34), transparent 32%, rgba(255, 255, 255, 0.04) 72%);
  mix-blend-mode: screen;
  pointer-events: none;
}

.glass::after {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  border: 1px solid rgba(255, 255, 255, 0.18);
  pointer-events: none;
}

.glass-strong {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.66), rgba(246, 249, 255, 0.36)),
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.44), transparent 38%),
    radial-gradient(circle at bottom right, rgba(128, 226, 212, 0.12), transparent 28%);
}

.glass-dark {
  border: 1px solid rgba(255, 255, 255, 0.08);
  background:
    linear-gradient(180deg, rgba(14, 28, 56, 0.96), rgba(18, 35, 67, 0.94)),
    radial-gradient(circle at top right, rgba(83, 133, 255, 0.24), transparent 34%);
  box-shadow:
    0 30px 70px rgba(13, 27, 53, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  position: relative;
  z-index: 1;
}

.brand-mark {
  width: 48px;
  height: 48px;
  display: block;
  border-radius: 18px;
  box-shadow: 0 16px 28px rgba(43, 109, 255, 0.24);
  object-fit: cover;
  flex: 0 0 48px;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.brand-copy strong {
  font-family: "Syne", sans-serif;
  font-size: 1rem;
}

.brand-copy span {
  color: var(--muted);
  font-size: 0.84rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
  position: relative;
  z-index: 1;
}

.nav a {
  padding: 12px 16px;
  border-radius: 999px;
  color: var(--muted);
  font-weight: 700;
  font-size: 0.94rem;
  transition: background 0.25s ease, color 0.25s ease, transform 0.25s ease;
}

.nav a:hover,
.nav a:focus-visible {
  background: rgba(255, 255, 255, 0.42);
  color: var(--text);
  transform: translateY(-1px);
  outline: none;
}

.nav-cta {
  color: var(--primary) !important;
}

.nav-toggle {
  display: none;
  position: relative;
  width: 52px;
  height: 52px;
  border: 1px solid rgba(255, 255, 255, 0.54);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.56);
}

.nav-toggle span {
  position: absolute;
  left: 14px;
  right: 14px;
  height: 2px;
  background: var(--text);
  transition: transform 0.25s ease, top 0.25s ease;
}

.nav-toggle span:first-child {
  top: 20px;
}

.nav-toggle span:last-child {
  top: 30px;
}

.menu-open .nav-toggle span:first-child {
  top: 25px;
  transform: rotate(45deg);
}

.menu-open .nav-toggle span:last-child {
  top: 25px;
  transform: rotate(-45deg);
}

.section {
  padding: 34px 0;
}

.page-enter {
  opacity: 0;
  transform: translateY(26px) scale(0.985);
  transition: opacity 0.9s ease, transform 0.9s ease;
}

.page-enter-delay-1 {
  transition-delay: 0.06s;
}

.page-enter-delay-2 {
  transition-delay: 0.12s;
}

.page-enter-delay-3 {
  transition-delay: 0.2s;
}

.page-enter-delay-4 {
  transition-delay: 0.28s;
}

.page-enter-delay-5 {
  transition-delay: 0.36s;
}

.page-enter-delay-6 {
  transition-delay: 0.44s;
}

.hero {
  padding-top: 18px;
}

.hero-panel,
.api-shell,
.contact-panel {
  border-radius: var(--radius-xl);
  padding: 36px;
}

.hero-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  align-items: start;
}

.hero-intro,
.hero-stage,
.section-header,
.feature-card,
.story-card,
.mini-card,
.api-note,
.contact-panel,
.strip-item,
.timeline-item,
.code-card {
  position: relative;
  z-index: 1;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 16px;
  border-radius: 999px;
  color: var(--primary);
  background: rgba(43, 109, 255, 0.08);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero h1,
.section h2,
.feature-card h3,
.story-card h2,
.mini-card h3,
.api-note h3,
.contact-panel h2 {
  margin: 0;
  font-family: "Syne", sans-serif;
  letter-spacing: -0.035em;
}

.hero h1 {
  margin-top: 22px;
  max-width: 900px;
  font-size: clamp(2.4rem, 4.9vw, 5.1rem);
  line-height: 1.02;
  overflow-wrap: anywhere;
  margin-inline: auto;
}

.hero h1 span {
  display: block;
  color: #2f6bde;
}

.section-header p,
.story-card p,
.mini-card p,
.api-note p,
.contact-panel p {
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.78;
}

.hero-summary {
  max-width: 760px;
  margin: 18px auto 0;
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.8;
}

.hero-intro {
  width: 100%;
  max-width: 920px;
  justify-self: center;
  padding-top: 22px;
  text-align: center;
}

.hero-intro .eyebrow {
  margin-inline: auto;
}

.hero-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 58px;
  padding: 0 24px;
  border-radius: 18px;
  font-weight: 800;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  outline: none;
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, #112444, #2b6dff 54%, #7eb8ff);
  box-shadow: 0 18px 36px rgba(43, 109, 255, 0.26);
}

.button-secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.48);
  border: 1px solid rgba(255, 255, 255, 0.54);
  box-shadow: var(--shadow-soft);
}

.hero-stage {
  position: relative;
  width: min(100%, 760px);
  justify-self: center;
  min-height: 560px;
  align-self: start;
}

.stage-core {
  position: absolute;
  inset: 24px 42px 86px;
  border-radius: 34px;
  padding: 24px;
}

.glow-card {
  box-shadow:
    0 40px 90px rgba(43, 109, 255, 0.12),
    0 0 0 1px rgba(255, 255, 255, 0.22) inset,
    inset 0 0 80px rgba(128, 226, 212, 0.12);
}

.stage-head,
.stage-metrics {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.live-pill,
.route-pill,
.card-label {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 800;
}

.live-pill {
  color: #087a6e;
  background: rgba(128, 226, 212, 0.26);
}

.route-pill {
  color: var(--primary);
  background: rgba(43, 109, 255, 0.1);
}

.orbital-chart {
  position: relative;
  display: grid;
  place-items: center;
  height: 340px;
  margin: 26px 0 28px;
}

.ring,
.core-dot {
  position: absolute;
  border-radius: 50%;
}

.ring {
  border: 1px solid rgba(43, 109, 255, 0.16);
  box-shadow:
    inset 0 0 30px rgba(128, 226, 212, 0.08),
    0 0 40px rgba(43, 109, 255, 0.06);
}

.ring-a {
  width: 300px;
  height: 300px;
  animation: spin 12s linear infinite;
}

.ring-b {
  width: 230px;
  height: 230px;
  animation: spinReverse 9s linear infinite;
}

.ring-c {
  width: 150px;
  height: 150px;
  animation: spin 7s linear infinite;
}

.core-dot {
  width: 76px;
  height: 76px;
  background:
    radial-gradient(circle at 35% 30%, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.28) 42%, transparent 48%),
    linear-gradient(135deg, #2b6dff, #80e2d4);
  box-shadow:
    0 0 40px rgba(43, 109, 255, 0.28),
    0 0 80px rgba(128, 226, 212, 0.16);
}

.stage-metrics article {
  flex: 1;
  padding: 18px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.44);
  text-align: center;
}

.stage-metrics span,
.strip-item,
.feature-card p,
.timeline-item p {
  color: var(--muted);
}

.stage-metrics strong {
  display: block;
  margin-top: 8px;
  font-family: "Syne", sans-serif;
  font-size: 1.3rem;
}

.float-card {
  position: absolute;
  width: 250px;
  padding: 22px;
  border-radius: 26px;
}

.float-card strong {
  display: block;
  margin: 12px 0 8px;
  font-family: "Syne", sans-serif;
  font-size: 1.1rem;
  line-height: 1.25;
}

.float-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.62;
}

.float-card-a {
  top: -8px;
  right: 12px;
}

.float-card-b {
  left: 0;
  bottom: 70px;
}

.float-card-c {
  right: 24px;
  bottom: -4px;
}

.hero-strip {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.strip-item {
  padding: 20px 18px;
  border-radius: 24px;
  text-align: center;
  font-weight: 800;
}

.section-header {
  max-width: 860px;
  margin: 0 auto 24px;
  text-align: center;
}

.section-header-compact {
  margin-bottom: 28px;
}

.section h2 {
  margin: 18px 0 14px;
  font-size: clamp(2rem, 3.8vw, 3.7rem);
  line-height: 1.08;
  overflow-wrap: anywhere;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.security-grid-extended,
.experience-grid,
.visitor-grid {
  display: grid;
  gap: 18px;
}

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

.experience-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card,
.story-card,
.mini-card,
.api-note,
.security-tile,
.experience-card,
.visitor-card,
.visitor-shell {
  border-radius: 30px;
  padding: 26px;
}

.feature-card-accent {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.6), rgba(246, 249, 255, 0.34)),
    radial-gradient(circle at top right, rgba(244, 184, 255, 0.18), transparent 34%),
    radial-gradient(circle at bottom left, rgba(128, 226, 212, 0.16), transparent 28%);
}

.feature-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 18px;
  background: rgba(43, 109, 255, 0.08);
  color: var(--primary);
  font-family: "Syne", sans-serif;
  font-size: 0.9rem;
}

.feature-card h3,
.mini-card h3,
.api-note h3,
.security-tile h3 {
  margin: 18px 0 10px;
  font-size: 1.18rem;
  line-height: 1.25;
}

.security-kicker {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(43, 109, 255, 0.08);
  color: var(--primary);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 22px;
  align-items: start;
}

.story-card {
  min-height: 100%;
}

.timeline {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.timeline-item {
  padding: 20px 22px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.34);
  border: 1px solid rgba(255, 255, 255, 0.38);
}

.timeline-item strong {
  display: block;
  margin-bottom: 8px;
  font-family: "Syne", sans-serif;
  font-size: 1rem;
}

.stack-panel {
  display: grid;
  gap: 18px;
}

.api-grid {
  display: grid;
  grid-template-columns: minmax(320px, 1.15fr) repeat(3, minmax(0, 1fr));
  gap: 18px;
  align-items: stretch;
}

.code-card {
  border-radius: 30px;
  padding: 22px;
}

.code-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  color: rgba(220, 232, 255, 0.76);
  font-size: 0.84rem;
  font-weight: 700;
}

.code-card pre {
  margin: 0;
  padding: 22px;
  overflow: auto;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.code-card code {
  color: #d8e8ff;
  font-family: Consolas, "Courier New", monospace;
  line-height: 1.82;
  font-size: 0.94rem;
}

.contact-panel {
  text-align: center;
}

.contact-panel p {
  max-width: 760px;
  margin: 16px auto 24px;
}

.footer-section {
  padding-top: 8px;
  padding-bottom: 56px;
}

.footer-note {
  max-width: 980px;
  margin: 0 auto;
  border-radius: 34px;
  padding: 30px 34px;
  text-align: center;
}

.footer-note h2 {
  margin: 18px auto 14px;
  max-width: 760px;
  font-family: "Syne", sans-serif;
  font-size: clamp(1.8rem, 3.8vw, 3rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.footer-note p {
  max-width: 760px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
}

.experience-card strong,
.visitor-card span,
.visitor-card strong {
  display: block;
}

.experience-card strong {
  font-family: "Syne", sans-serif;
  font-size: 1.12rem;
  line-height: 1.32;
}

.experience-card p,
.security-tile p {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.72;
}

.visitor-section {
  padding-top: 0;
  padding-bottom: 70px;
}

.visitor-shell {
  text-align: center;
}

.visitor-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin-top: 26px;
}

.visitor-card {
  text-align: left;
  padding: 22px;
  position: relative;
}

.visitor-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(43, 109, 255, 0.08);
  color: var(--primary);
  font-family: "Syne", sans-serif;
  font-size: 0.72rem;
  font-style: normal;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.visitor-card span {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 700;
  margin-top: 12px;
}

.visitor-card strong {
  margin-top: 10px;
  font-family: "Syne", sans-serif;
  font-size: 1.02rem;
  line-height: 1.35;
  word-break: break-word;
  transition: color 0.25s ease, opacity 0.25s ease;
}

.visitor-card strong[data-state="loading"] {
  color: #587193;
  opacity: 0.78;
}

.visitor-card strong[data-state="ok"] {
  color: var(--text);
}

.visitor-card strong[data-state="unavailable"] {
  color: #8494ab;
  opacity: 0.9;
}

.devtools-shield {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(circle at center, rgba(43, 109, 255, 0.2), rgba(17, 36, 68, 0.8)),
    rgba(8, 16, 31, 0.74);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.25s ease, visibility 0.25s ease;
  z-index: 9999;
}

.devtools-card {
  max-width: 560px;
  width: 100%;
  border-radius: 32px;
  padding: 30px;
  text-align: center;
}

.devtools-card h2 {
  margin: 18px 0 10px;
  font-family: "Syne", sans-serif;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.08;
}

.devtools-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

body.devtools-active .site-shell {
  filter: blur(30px) saturate(0.2);
  transform: scale(1.02);
  user-select: none;
  pointer-events: none;
}

body.devtools-active .devtools-shield {
  opacity: 1;
  visibility: visible;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes spinReverse {
  from { transform: rotate(360deg); }
  to { transform: rotate(0deg); }
}

@media (max-width: 1180px) {
  .hero-panel,
  .split-section,
  .api-grid {
    grid-template-columns: 1fr;
  }

  .hero-stage {
    min-height: 540px;
  }

  .hero-strip,
  .feature-grid,
  .experience-grid,
  .visitor-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .security-grid-extended {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 860px) {
  .topbar {
    padding-top: 18px;
    padding-bottom: 18px;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 2;
  }

  .nav {
    position: absolute;
    top: calc(100% + 8px);
    left: 20px;
    right: 20px;
    display: grid;
    gap: 6px;
    padding: 14px;
    border-radius: 28px;
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: blur(28px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
  }

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

  .nav a {
    width: 100%;
    border-radius: 16px;
  }

  .hero-panel,
  .api-shell,
  .contact-panel,
  .footer-note {
    padding: 28px;
    border-radius: 30px;
  }

  .hero-stage {
    min-height: 600px;
  }
}

@media (max-width: 640px) {
  .topbar,
  .section {
    width: min(calc(100% - 24px), var(--container));
  }

  .section {
    padding: 22px 0;
  }

  .hero-panel,
  .api-shell,
  .contact-panel,
  .footer-note {
    padding: 20px;
    border-radius: 24px;
  }

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

  .hero h1 {
    font-size: clamp(2rem, 10vw, 3.3rem);
  }

  .hero-intro {
    max-width: 100%;
    padding-top: 8px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .hero-stage {
    width: 100%;
    min-height: 660px;
  }

  .security-grid-extended,
  .experience-grid,
  .visitor-grid {
    grid-template-columns: 1fr;
  }

  .stage-core {
    inset: 90px 10px 210px;
  }

  .float-card {
    width: auto;
    left: 10px;
    right: 10px;
  }

  .float-card-a {
    top: 12px;
  }

  .float-card-b {
    bottom: 108px;
  }

  .float-card-c {
    bottom: 10px;
  }

  .strip-item,
  .feature-card,
  .story-card,
  .mini-card,
  .api-note,
  .timeline-item,
  .code-card {
    border-radius: 22px;
  }

  .code-card pre {
    padding: 18px;
  }
}