html {
  scroll-behavior: smooth;
}

:root {
  color-scheme: dark;
  --bg: #040404;
  --panel: rgba(10, 10, 11, 0.58);
  --panel-border: rgba(255, 255, 255, 0.09);
  --text: #f5f5f0;
  --text-soft: rgba(245, 245, 240, 0.74);
  --text-faint: rgba(245, 245, 240, 0.46);
  --accent: #5f76ff;
  --accent-strong: #7f92ff;
  --device-accent: #88a2ff;
  --device-accent-soft: rgba(136, 162, 255, 0.14);
  --device-cyan: #7ed8ff;
  --device-silver: #c4d0e2;
  --device-muted: rgba(196, 208, 226, 0.7);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.34);
  --max-width: 1240px;
  --fs-label: 0.82rem;
  --fs-body: 1rem;
  --fs-body-lg: 1.06rem;
  --fs-title-xl: clamp(3.2rem, 7.2vw, 5.4rem);
  --fs-title-lg: clamp(2.7rem, 5.2vw, 4.3rem);
  --fs-title-md: clamp(1.7rem, 2.8vw, 2.5rem);
  --fs-title-sm: 1.12rem;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: #050505;
  color: var(--text);
  font-family: "Outfit", "Noto Sans SC", sans-serif;
}

body {
  overflow-x: hidden;
  overflow-y: auto;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.16;
  background-image:
    radial-gradient(circle, rgba(255, 255, 255, 0.2) 0 1px, transparent 1.3px),
    radial-gradient(circle, rgba(255, 255, 255, 0.12) 0 1px, transparent 1.2px),
    radial-gradient(circle, rgba(255, 255, 255, 0.08) 0 1px, transparent 1.1px);
  background-size: 180px 180px, 240px 240px, 320px 320px;
  background-position: 0 0, 40px 96px, 110px 38px;
}

.noise-layer {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.06;
  mix-blend-mode: soft-light;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 3px 3px;
}

.site-header {
  position: fixed;
  inset: 18px 0 auto;
  z-index: 20;
  padding: 0 18px;
}

.site-header__inner {
  width: min(100%, var(--max-width));
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 14px 18px;
  border: 1px solid var(--panel-border);
  border-radius: 999px;
  background: var(--panel);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.brand-mark {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background:
    radial-gradient(circle at 32% 28%, rgba(255, 255, 255, 0.28), transparent 45%),
    linear-gradient(145deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.04));
  position: relative;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.24), rgba(255, 255, 255, 0.02));
}

.nav-links {
  display: flex;
  justify-content: center;
  gap: 28px;
}

.nav-links a,
.nav-cta,
.primary-button {
  text-decoration: none;
}

.nav-links a {
  color: var(--text-faint);
  font-size: var(--fs-label);
  letter-spacing: 0.08em;
  transition: color 180ms ease;
}

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

.nav-cta,
.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(180deg, var(--accent-strong) 0%, var(--accent) 100%);
  box-shadow: 0 10px 28px rgba(90, 112, 255, 0.28);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.nav-cta {
  min-height: 40px;
  padding: 0 16px;
  font-size: var(--fs-label);
  font-weight: 600;
  letter-spacing: 0.05em;
  cursor: pointer;
  font-family: inherit;
}

.nav-cta:hover,
.nav-cta:focus-visible,
.primary-button:hover,
.primary-button:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 14px 34px rgba(90, 112, 255, 0.4);
}

main {
  position: relative;
  z-index: 5;
}

.section-kicker {
  margin: 0;
  color: var(--text-faint);
  font-size: var(--fs-label);
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-background,
.hero-video,
.hero-overlay,
.hero-grid {
  position: absolute;
  inset: 0;
}

.hero-background {
  z-index: 0;
}

.hero-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.02);
  filter: saturate(0.9) brightness(0.72) contrast(1.08);
}

.hero-overlay {
  background:
    linear-gradient(180deg, rgba(0, 0, 0, 0.2) 0%, rgba(0, 0, 0, 0.42) 58%, rgba(0, 0, 0, 0.72) 100%),
    radial-gradient(circle at 50% 45%, rgba(91, 111, 255, 0.14), transparent 32%),
    radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.06), transparent 28%);
}

.hero-grid {
  opacity: 0.08;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.85) 24%, rgba(0, 0, 0, 1) 100%);
}

.hero-glow {
  position: absolute;
  z-index: 1;
  width: 34vw;
  height: 34vw;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.12;
}

.hero-glow-left {
  left: -8vw;
  bottom: -10vw;
  background: rgba(104, 122, 255, 0.45);
}

.hero-glow-right {
  right: -6vw;
  top: 12vh;
  background: rgba(255, 255, 255, 0.14);
}

.hero-content {
  position: relative;
  z-index: 4;
  width: min(calc(100% - 36px), 1080px);
  margin-top: 40px;
  text-align: center;
  animation: hero-rise 900ms ease both;
}

.hero-kicker {
  margin: 0;
}

.hero-content h1 {
  margin: 18px 0 0;
  font-size: clamp(3.8rem, 9vw, 5.8rem);
  line-height: 0.96;
  font-weight: 700;
  letter-spacing: -0.05em;
}

.hero-description {
  max-width: 650px;
  margin: 20px auto 0;
  color: var(--text-soft);
  font-size: var(--fs-body);
  line-height: 1.9;
}

.hero-actions {
  margin-top: 32px;
}

.primary-button {
  min-height: 58px;
  padding: 0 34px;
  font-size: var(--fs-body);
  font-weight: 700;
  letter-spacing: 0.08em;
  box-shadow:
    0 16px 40px rgba(90, 112, 255, 0.42),
    inset 0 1px 0 rgba(255, 255, 255, 0.16);
}

.core-section {
  position: relative;
  min-height: 100svh;
  padding: 98px 18px 108px;
  background: #020304;
  overflow: hidden;
  display: flex;
  align-items: center;
}

.core-section::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.05;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 72px 72px;
}

.core-section::after,
.mission-section::after,
.presale-section::after,
.system-section::after,
.help-section::after,
.site-footer::after,
.device-section__inner::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.18;
  background-image:
    linear-gradient(
      115deg,
      transparent 0%,
      transparent 34%,
      rgba(126, 216, 255, 0.02) 41%,
      rgba(126, 216, 255, 0.14) 48%,
      rgba(126, 216, 255, 0.03) 55%,
      transparent 62%,
      transparent 100%
    ),
    linear-gradient(
      115deg,
      transparent 0%,
      transparent 56%,
      rgba(95, 118, 255, 0.01) 63%,
      rgba(95, 118, 255, 0.1) 70%,
      rgba(95, 118, 255, 0.02) 77%,
      transparent 84%,
      transparent 100%
    );
  background-size: 180% 180%, 220% 220%;
  background-position: 0% 0%, 100% 100%;
  animation: section-line-flow 16s linear infinite;
}

.core-section::after,
.mission-section::after,
.presale-section::after,
.system-section::after,
.help-section::after,
.site-footer::after {
  z-index: 0;
}

.core-section__inner {
  position: relative;
  z-index: 1;
  width: min(100%, var(--max-width));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.08fr 1fr 1fr;
  grid-template-rows: minmax(250px, auto) minmax(250px, auto);
  gap: 24px;
}

.core-card {
  position: relative;
  overflow: hidden;
  min-height: 250px;
  padding: 36px;
  border-radius: 34px;
  border: 1px solid rgba(136, 162, 255, 0.16);
  background: linear-gradient(180deg, rgba(10, 11, 14, 0.96), rgba(5, 7, 10, 0.98));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.03),
    0 28px 70px rgba(0, 0, 0, 0.26);
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 760ms ease,
    transform 980ms cubic-bezier(0.2, 0.9, 0.2, 1),
    border-color 240ms ease,
    box-shadow 240ms ease;
}

.core-card::before,
.core-card::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.core-card::before {
  inset: 16px;
  border-radius: 28px;
  opacity: 0.16;
}

.core-card::after {
  opacity: 0.14;
}

.core-section.is-visible .core-card {
  opacity: 1;
  transform: translateY(0);
}

.core-section.is-visible .core-card:nth-child(1) { transition-delay: 40ms; }
.core-section.is-visible .core-card:nth-child(2) { transition-delay: 140ms; }
.core-section.is-visible .core-card:nth-child(3) { transition-delay: 240ms; }
.core-section.is-visible .core-card:nth-child(4) { transition-delay: 340ms; }

.core-card:hover,
.core-card:focus-within {
  border-color: rgba(52, 130, 255, 0.32);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.03),
    0 32px 74px rgba(0, 0, 0, 0.3),
    0 0 0 1px rgba(52, 130, 255, 0.08);
}

.core-card:hover::before,
.core-card:focus-within::before {
  opacity: 0.22;
}

.core-card:hover::after,
.core-card:focus-within::after {
  opacity: 0.18;
}

.core-card-large {
  grid-row: 1 / span 2;
}

.core-card-wide {
  grid-column: 2 / span 2;
}

.core-card-large::before {
  background:
    linear-gradient(rgba(131, 185, 255, 0.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(131, 185, 255, 0.16) 1px, transparent 1px),
    radial-gradient(circle at 24% 24%, rgba(131, 185, 255, 0.18) 0 2px, transparent 3px),
    radial-gradient(circle at 72% 38%, rgba(255, 255, 255, 0.1) 0 2px, transparent 3px),
    radial-gradient(circle at 46% 68%, rgba(131, 185, 255, 0.14) 0 2px, transparent 3px);
  background-size: 42px 42px, 42px 42px, auto, auto, auto;
  mask-image: linear-gradient(135deg, rgba(0, 0, 0, 0.76), transparent 78%);
}

.core-card-large::after {
  left: 30px;
  top: 116px;
  width: 45%;
  height: 36%;
  border-radius: 26px;
  border: 1px solid rgba(131, 185, 255, 0.16);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
  clip-path: polygon(0 0, 74% 0, 100% 24%, 100% 100%, 0 100%);
}

.core-card-wide::before {
  inset: 18px 18px 20px;
  background:
    radial-gradient(circle at 22% 36%, rgba(131, 185, 255, 0.18) 0 2px, transparent 3px),
    radial-gradient(circle at 44% 28%, rgba(131, 185, 255, 0.16) 0 2px, transparent 3px),
    radial-gradient(circle at 63% 46%, rgba(255, 255, 255, 0.09) 0 2px, transparent 3px),
    linear-gradient(116deg, transparent 24%, rgba(131, 185, 255, 0.12) 24.8%, transparent 26.2%, transparent 49%, rgba(131, 185, 255, 0.1) 49.8%, transparent 51.2%, transparent 72%, rgba(255, 255, 255, 0.08) 72.8%, transparent 74.2%),
    linear-gradient(rgba(131, 185, 255, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(131, 185, 255, 0.12) 1px, transparent 1px);
  background-size: auto, auto, auto, 100% 100%, 34px 34px, 34px 34px;
  mask-image: linear-gradient(115deg, rgba(0, 0, 0, 0.85), transparent 82%);
}

.core-card-wide::after {
  right: 30px;
  bottom: 28px;
  width: 34%;
  height: 46%;
  border-radius: 26px;
  border: 1px solid rgba(131, 185, 255, 0.14);
  clip-path: polygon(18% 0, 100% 0, 100% 100%, 0 100%, 0 22%);
}

.core-card:nth-child(3)::before {
  background:
    radial-gradient(circle at 50% 50%, transparent 0 32%, rgba(131, 185, 255, 0.14) 32.6%, transparent 33.6%, transparent 42%, rgba(131, 185, 255, 0.1) 42.6%, transparent 43.6%),
    linear-gradient(rgba(131, 185, 255, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(131, 185, 255, 0.12) 1px, transparent 1px);
  background-size: 100% 100%, 28px 28px, 28px 28px;
  mask-image: radial-gradient(circle at 82% 82%, rgba(0, 0, 0, 0.88), transparent 72%);
}

.core-card:nth-child(3)::after {
  right: 20px;
  bottom: 18px;
  width: 52%;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(131, 185, 255, 0.12);
  box-shadow:
    0 0 0 18px rgba(131, 185, 255, 0.03),
    0 0 0 38px rgba(131, 185, 255, 0.02);
}

.core-card:nth-child(4)::before {
  background:
    radial-gradient(circle at 72% 30%, rgba(131, 185, 255, 0.16) 0 2px, transparent 3px),
    radial-gradient(circle at 66% 64%, rgba(255, 255, 255, 0.08) 0 2px, transparent 3px),
    radial-gradient(circle at 84% 78%, rgba(131, 185, 255, 0.14) 0 2px, transparent 3px),
    linear-gradient(135deg, transparent 22%, rgba(131, 185, 255, 0.1) 23%, transparent 24%, transparent 48%, rgba(131, 185, 255, 0.08) 49%, transparent 50%);
  mask-image: linear-gradient(135deg, transparent 16%, rgba(0, 0, 0, 0.88) 32%, rgba(0, 0, 0, 0.88) 100%);
}

.core-card:nth-child(4)::after {
  right: 18px;
  bottom: 18px;
  width: 46%;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(131, 185, 255, 0.14);
  box-shadow:
    0 0 0 14px rgba(131, 185, 255, 0.025),
    0 0 0 28px rgba(131, 185, 255, 0.02);
}

.core-card__bg {
  position: absolute;
  inset: 0;
  opacity: 0.22;
}

.core-card__bg::before {
  content: "";
  position: absolute;
  inset: 18px;
  border-radius: 28px;
  opacity: 0.38;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.025), rgba(255, 255, 255, 0.01)),
    radial-gradient(circle at 18% 16%, rgba(131, 185, 255, 0.09), transparent 22%),
    linear-gradient(rgba(131, 185, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(131, 185, 255, 0.028) 1px, transparent 1px);
  background-size: auto, auto, 30px 30px, 30px 30px;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.03),
    inset 0 0 0 1px rgba(131, 185, 255, 0.04);
}

.core-card__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.08), rgba(0, 0, 0, 0.74));
}

.core-card__bg-warm {
  background:
    radial-gradient(circle at 18% 20%, rgba(255, 255, 255, 0.12), transparent 14%),
    radial-gradient(circle at 78% 84%, rgba(255, 255, 255, 0.08), transparent 18%),
    radial-gradient(circle at 30% 58%, rgba(100, 110, 130, 0.18), transparent 32%);
}

.core-card__bg-mountain {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent 28%),
    radial-gradient(circle at 50% 100%, rgba(255, 255, 255, 0.08), transparent 38%),
    radial-gradient(circle at 82% 58%, rgba(131, 185, 255, 0.08), transparent 20%);
}

.core-card__bg-mountain::before {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 54%;
  background:
    linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.36)),
    radial-gradient(circle at 18% 100%, rgba(255, 255, 255, 0.08), transparent 16%),
    linear-gradient(165deg, transparent 42%, rgba(255, 255, 255, 0.06) 43%, transparent 48%),
    linear-gradient(12deg, transparent 40%, rgba(255, 255, 255, 0.05) 41%, transparent 46%);
}

.core-card__bg-planet {
  background:
    radial-gradient(circle at 80% 90%, rgba(124, 162, 255, 0.14), transparent 22%),
    radial-gradient(circle at 18% 92%, rgba(255, 255, 255, 0.08), transparent 18%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 32%);
}

.core-card__bg-planet::before {
  content: "";
  position: absolute;
  right: -8%;
  bottom: -14%;
  width: 62%;
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 62% 34%, rgba(255, 255, 255, 0.14), transparent 12%),
    radial-gradient(circle at 60% 54%, rgba(255, 255, 255, 0.08), transparent 22%),
    radial-gradient(circle, rgba(34, 36, 41, 0.92) 0%, rgba(7, 8, 10, 0.98) 76%);
  opacity: 0.72;
}

.core-card__bg-orbit {
  background:
    radial-gradient(circle at 82% 22%, rgba(124, 162, 255, 0.14), transparent 16%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent),
    radial-gradient(circle at 14% 84%, rgba(131, 185, 255, 0.08), transparent 20%);
}

.core-card__bg-orbit::before,
.core-card__bg-orbit::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(124, 162, 255, 0.12);
}

.core-card__bg-orbit::before {
  right: -6%;
  bottom: -8%;
  width: 54%;
  aspect-ratio: 1;
}

.core-card__bg-orbit::after {
  right: 4%;
  bottom: 4%;
  width: 32%;
  aspect-ratio: 1;
}

.core-card__icon,
.core-card__content,
.core-card__tag {
  position: relative;
  z-index: 1;
}

.core-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 78px;
  height: 78px;
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
  color: #83b9ff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

.core-card__icon svg {
  width: 56px;
  height: 56px;
  overflow: visible;
  filter:
    drop-shadow(0 0 12px rgba(31, 141, 255, 0.14))
    drop-shadow(0 0 28px rgba(255, 255, 255, 0.03));
}

.core-card__icon svg g {
  opacity: 0.94;
}

.core-card__content {
  margin-top: 54px;
}

.core-card__content h2,
.core-card__content h3 {
  margin: 0;
  color: #ffffff;
  font-weight: 700;
  letter-spacing: -0.05em;
}

.core-card__content h2 {
  font-size: var(--fs-title-lg);
  line-height: 1.05;
}

.core-card__content h3 {
  font-size: var(--fs-title-md);
  line-height: 1.08;
}

.core-card__content p {
  max-width: 16ch;
  margin: 26px 0 0;
  color: rgba(213, 220, 236, 0.72);
  font-size: var(--fs-body);
  line-height: 1.9;
}

.core-card-wide .core-card__content p {
  max-width: 22ch;
}

.core-card__tag {
  position: absolute;
  left: 36px;
  bottom: 34px;
  display: inline-flex;
  align-items: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(190, 198, 216, 0.64);
  font-size: var(--fs-label);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.03);
}

.mission-section {
  position: relative;
  min-height: 100svh;
  padding: 96px 18px 108px;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 50%, rgba(31, 141, 255, 0.06), transparent 20%),
    linear-gradient(180deg, #020304 0%, #030405 100%);
  display: flex;
  align-items: center;
}

.mission-section::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.05;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 72px 72px;
}

.mission-section__inner {
  position: relative;
  z-index: 1;
  width: min(100%, 1080px);
  margin: 0 auto;
  text-align: center;
}

.mission-statement {
  display: grid;
  justify-items: center;
  gap: 28px;
}

.mission-section__inner > .section-kicker,
.mission-statement > h2,
.mission-statement > .mission-highlight {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 720ms ease,
    transform 980ms cubic-bezier(0.2, 0.9, 0.2, 1);
}

.mission-section.is-visible .mission-section__inner > .section-kicker,
.mission-section.is-visible .mission-statement > h2,
.mission-section.is-visible .mission-statement > .mission-highlight {
  opacity: 1;
  transform: translateY(0);
}

.mission-section.is-visible .mission-section__inner > .section-kicker {
  transition-delay: 40ms;
}

.mission-section.is-visible .mission-statement > h2 {
  transition-delay: 150ms;
}

.mission-section.is-visible .mission-statement > .mission-highlight {
  transition-delay: 300ms;
}

.mission-section__inner h2 {
  margin: 18px auto 0;
  display: grid;
  gap: 10px;
  max-width: 20ch;
  color: rgba(244, 247, 252, 0.92);
  font-size: var(--fs-title-lg);
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -0.05em;
}

.mission-highlight {
  margin: 0 auto;
  display: grid;
  gap: 10px;
  max-width: none;
  color: rgba(244, 247, 252, 0.92);
  font-size: clamp(2rem, 4vw, 3.15rem);
  line-height: 1.06;
  font-weight: 700;
  letter-spacing: -0.05em;
  white-space: nowrap;
}

.mission-highlight em {
  font-style: normal;
  color: var(--device-cyan);
}

.device-section {
  position: relative;
  min-height: 100svh;
  padding: 110px 18px 120px;
  --device-shift: 0;
  --device-shift-soft: 0;
  --device-rotate: 0deg;
  overflow: hidden;
  display: flex;
  align-items: center;
}

.device-section::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.08;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image:
    radial-gradient(circle at 50% 50%, rgba(0, 0, 0, 0.95) 0%, rgba(0, 0, 0, 0.75) 58%, transparent 100%);
}

.device-section::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.22;
  background:
    radial-gradient(circle at 24% 32%, rgba(91, 111, 255, 0.1), transparent 26%),
    radial-gradient(circle at 76% 62%, rgba(255, 255, 255, 0.04), transparent 20%);
}

.device-section__inner {
  position: relative;
  z-index: 1;
  width: min(100%, var(--max-width));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(0, 1.06fr);
  gap: 42px;
  align-items: stretch;
}

.device-section__inner::before {
  z-index: 0;
  border-radius: 40px;
}

.device-copy {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.device-copy > .section-kicker,
.device-copy > h2,
.device-copy > .device-description,
.device-copy > .device-feature-list {
  opacity: 0;
  transform: translate3d(-28px, 0, 0);
  transition:
    opacity 720ms ease,
    transform 900ms cubic-bezier(0.2, 0.9, 0.2, 1);
}

.device-section.is-visible .device-copy > .section-kicker,
.device-section.is-visible .device-copy > h2,
.device-section.is-visible .device-copy > .device-description,
.device-section.is-visible .device-copy > .device-feature-list {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

.device-section.is-visible .device-copy > .section-kicker {
  transition-delay: 40ms;
}

.device-section.is-visible .device-copy > h2 {
  transition-delay: 140ms;
}

.device-section.is-visible .device-copy > .device-description {
  transition-delay: 240ms;
}

.device-section.is-visible .device-copy > .device-feature-list {
  transition-delay: 340ms;
}

.device-copy h2 {
  margin: 16px 0 0;
  display: flex;
  flex-direction: column;
  max-width: none;
  font-size: var(--fs-title-xl);
  line-height: 0.88;
  font-weight: 800;
  letter-spacing: -0.08em;
}

.device-title-primary {
  color: #ffffff;
}

.device-title-secondary {
  color: rgba(113, 121, 139, 0.42);
}

.device-description {
  max-width: 560px;
  margin: 22px 0 0;
  color: var(--device-muted);
  font-size: var(--fs-body);
  line-height: 1.9;
}

.device-feature-list {
  margin-top: 34px;
  display: grid;
  gap: 14px;
}

.device-feature-card {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 18px;
  align-items: start;
  padding: 18px 20px;
  border: 1px solid rgba(136, 162, 255, 0.14);
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(18, 22, 30, 0.82), rgba(10, 12, 19, 0.94));
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(12px);
  transition:
    transform 260ms ease,
    border-color 260ms ease,
    box-shadow 260ms ease,
    background 260ms ease;
  opacity: 0;
  transform: translateY(26px);
}

.device-feature-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.device-feature-card:nth-child(1) {
  transition-delay: 0ms;
}

.device-feature-card:nth-child(2) {
  transition-delay: 110ms;
}

.device-feature-card:nth-child(3) {
  transition-delay: 220ms;
}

.device-feature-card:hover,
.device-feature-card:focus-within {
  transform: translateY(-8px);
  border-color: rgba(126, 216, 255, 0.28);
  background:
    linear-gradient(180deg, rgba(20, 25, 36, 0.94), rgba(10, 12, 20, 0.98));
  box-shadow:
    0 22px 54px rgba(0, 0, 0, 0.3),
    0 0 0 1px rgba(126, 216, 255, 0.08);
}

.feature-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 10px;
  border-radius: 999px;
  border: 1px solid rgba(136, 162, 255, 0.2);
  color: var(--device-cyan);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  background: rgba(136, 162, 255, 0.08);
  transition:
    transform 240ms ease,
    border-color 240ms ease,
    color 240ms ease,
    box-shadow 240ms ease,
    background 240ms ease;
}

.device-feature-card:hover .feature-index,
.device-feature-card:focus-within .feature-index {
  transform: translateY(-2px) scale(1.04);
  border-color: rgba(126, 216, 255, 0.34);
  color: #dff6ff;
  background: rgba(126, 216, 255, 0.12);
  box-shadow: 0 0 24px rgba(126, 216, 255, 0.16);
}

.device-feature-card h3 {
  margin: 2px 0 0;
  font-size: var(--fs-title-sm);
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--device-silver);
  transition: color 240ms ease, transform 240ms ease;
}

.device-feature-card:hover h3,
.device-feature-card:focus-within h3 {
  color: #ffffff;
  transform: translateX(2px);
}

.device-feature-card p {
  margin: 10px 0 0;
  color: var(--device-muted);
  font-size: 0.98rem;
  line-height: 1.8;
  transition: color 240ms ease;
}

.device-feature-card:hover p,
.device-feature-card:focus-within p {
  color: rgba(245, 245, 240, 0.86);
}

.device-visual {
  position: relative;
  z-index: 1;
  display: flex;
}

.device-visual__frame {
  position: relative;
  width: 100%;
  min-height: 100%;
  padding: 32px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 36px;
  background:
    radial-gradient(circle at 50% 28%, rgba(126, 216, 255, 0.08), transparent 26%),
    linear-gradient(145deg, rgba(11, 14, 22, 0.94), rgba(6, 8, 14, 0.84));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.04),
    0 28px 70px rgba(0, 0, 0, 0.38);
  overflow: hidden;
  opacity: 0;
  transform: translate3d(36px, 0, 0) scale(0.965);
  transition:
    opacity 760ms ease,
    transform 980ms cubic-bezier(0.2, 0.9, 0.2, 1);
}

.device-section.is-visible .device-visual__frame {
  opacity: 1;
  transform: translate3d(0, calc(var(--device-shift-soft) * 1px), 0) scale(1);
}

.device-visual__halo {
  position: absolute;
  top: 10%;
  left: 50%;
  width: 72%;
  height: 44%;
  transform: translateX(-50%);
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(126, 216, 255, 0.18), rgba(136, 162, 255, 0.08) 48%, transparent 72%);
  filter: blur(22px);
  opacity: 0.72;
  transform: translateX(-50%) translateY(calc(var(--device-shift-soft) * 0.4px));
}

.device-visual__glow {
  position: absolute;
  inset: auto auto 6% 50%;
  width: 58%;
  height: 32%;
  transform: translateX(-50%);
  border-radius: 50%;
  background: rgba(88, 111, 255, 0.28);
  filter: blur(88px);
  opacity: 0.9;
  transform: translateX(-50%) translateY(calc(var(--device-shift) * -0.35px));
}

.device-visual__grid {
  position: absolute;
  inset: 0;
  opacity: 0.06;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.12) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 55% 50%, black 0%, black 55%, transparent 100%);
  transform: translateY(calc(var(--device-shift-soft) * -0.4px));
}

.device-visual__ring {
  position: absolute;
  left: 50%;
  bottom: 12%;
  width: 68%;
  height: 20%;
  transform: translateX(-50%);
  border-radius: 50%;
  border: 1px solid rgba(126, 216, 255, 0.16);
  opacity: 0.3;
  transform: translateX(-50%) translateY(calc(var(--device-shift) * 0.25px));
}

.device-visual__base {
  position: absolute;
  left: 50%;
  bottom: 8%;
  width: 62%;
  height: 10%;
  transform: translateX(-50%);
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(255, 255, 255, 0.18), rgba(122, 140, 255, 0.1) 42%, rgba(255, 255, 255, 0.02) 70%, transparent 80%);
  filter: blur(20px);
  opacity: 0.7;
  transform: translateX(-50%) translateY(calc(var(--device-shift) * 0.45px));
}

.device-metric,
.device-spec-board {
  position: absolute;
  z-index: 3;
  border: 1px solid rgba(136, 162, 255, 0.14);
  background:
    linear-gradient(180deg, rgba(15, 19, 28, 0.9), rgba(9, 12, 19, 0.82));
  backdrop-filter: blur(16px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.04),
    0 18px 42px rgba(0, 0, 0, 0.24);
}

.device-metric {
  display: grid;
  gap: 6px;
  min-width: 164px;
  padding: 12px 14px;
  border-radius: 20px;
  opacity: 0;
  animation: metric-breathe 4.8s ease-in-out infinite;
  transition:
    opacity 620ms ease,
    transform 820ms cubic-bezier(0.2, 0.9, 0.2, 1);
}

.device-metric-top {
  top: 20px;
  left: 20px;
  transform: translate3d(-16px, 0, 0);
}

.device-metric-right {
  right: 20px;
  top: 20px;
  transform: translate3d(16px, 0, 0);
}

.device-section.is-visible .device-metric {
  opacity: 1;
}

.device-section.is-visible .device-metric-top {
  transform: translate3d(0, calc(var(--device-shift-soft) * 0.2px), 0);
  transition-delay: 320ms;
}

.device-section.is-visible .device-metric-right {
  transform: translate3d(0, calc(var(--device-shift-soft) * -0.2px), 0);
  transition-delay: 420ms;
}

.device-metric__label,
.device-metric__hint,
.spec-title,
.device-spec-item__name {
  color: rgba(166, 187, 222, 0.58);
}

.device-metric__label,
.spec-title,
.device-spec-item__name {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.device-metric__value {
  font-size: 1.5rem;
  line-height: 1;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--device-cyan);
}

.device-metric__hint {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.74rem;
  letter-spacing: 0.06em;
}

.metric-status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--device-cyan);
  box-shadow: 0 0 0 0 rgba(126, 216, 255, 0.5);
  animation: metric-pulse 1.8s ease-out infinite;
}

.device-chip-row {
  position: absolute;
  z-index: 3;
  left: 20px;
  bottom: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  max-width: 280px;
  opacity: 0;
  transform: translate3d(0, 16px, 0);
  transition:
    opacity 620ms ease,
    transform 820ms cubic-bezier(0.2, 0.9, 0.2, 1);
}

.device-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid rgba(136, 162, 255, 0.12);
  background: rgba(136, 162, 255, 0.06);
  color: rgba(196, 208, 226, 0.92);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.device-spec-board {
  right: 20px;
  bottom: 22px;
  width: 220px;
  padding: 14px;
  border-radius: 24px;
  opacity: 0;
  transform: translate3d(0, 18px, 0);
  transition:
    opacity 620ms ease,
    transform 860ms cubic-bezier(0.2, 0.9, 0.2, 1);
}

.device-section.is-visible .device-chip-row {
  opacity: 1;
  transform: translate3d(0, calc(var(--device-shift-soft) * 0.2px), 0);
  transition-delay: 480ms;
}

.device-section.is-visible .device-spec-board {
  opacity: 1;
  transform: translate3d(0, calc(var(--device-shift-soft) * 0.18px), 0);
  transition-delay: 560ms;
}

.device-spec-board__header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.spec-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--device-cyan);
  box-shadow: 0 0 12px rgba(126, 216, 255, 0.72);
}

.device-spec-list {
  display: grid;
  gap: 10px;
}

.device-spec-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 10px;
  border-top: 1px solid rgba(136, 162, 255, 0.08);
  position: relative;
  overflow: hidden;
}

.device-spec-item strong {
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--device-silver);
}

.device-spec-item::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: -42%;
  width: 38%;
  background: linear-gradient(90deg, transparent, rgba(126, 216, 255, 0.14), transparent);
  transform: skewX(-22deg);
  animation: spec-scan 5.6s ease-in-out infinite;
}

.device-product-stage {
  position: relative;
  z-index: 2;
  width: min(100%, 760px);
  height: 360px;
  margin: 112px auto 0;
  animation: device-float 7s ease-in-out infinite;
  transform: translateY(calc(var(--device-shift) * -0.5px));
}

.device-product__shadow {
  position: absolute;
  left: 50%;
  bottom: 52px;
  width: 68%;
  height: 56px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 0, 0, 0.42), rgba(0, 0, 0, 0.05) 68%, transparent 82%);
  filter: blur(14px);
}

.device-product-image {
  position: absolute;
  left: 50%;
  top: 48%;
  width: min(100%, 620px);
  transform: translate(-50%, -50%) rotate(var(--device-rotate)) scale(1.01);
  display: block;
  filter:
    saturate(0.96)
    brightness(1)
    contrast(1.04)
    drop-shadow(0 24px 54px rgba(0, 0, 0, 0.3));
  transition: transform 260ms ease;
}

.system-section {
  position: relative;
  min-height: 100svh;
  padding: 112px 18px 124px;
  overflow: hidden;
  background:
    radial-gradient(circle at 62% 74%, rgba(93, 26, 130, 0.18), transparent 16%),
    radial-gradient(circle at 90% 18%, rgba(16, 70, 132, 0.16), transparent 20%),
    linear-gradient(180deg, #030405 0%, #020304 100%);
  display: flex;
  align-items: center;
}

.system-section::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.05;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(circle at 50% 50%, rgba(0, 0, 0, 0.95), transparent 92%);
}

.system-section__inner {
  position: relative;
  z-index: 1;
  width: min(100%, var(--max-width));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.92fr);
  gap: 64px;
  align-items: center;
}

.system-copy,
.system-panel-wrap {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 760ms ease,
    transform 980ms cubic-bezier(0.2, 0.9, 0.2, 1);
}

.system-section.is-visible .system-copy,
.system-section.is-visible .system-panel-wrap {
  opacity: 1;
  transform: translateY(0);
}

.system-section.is-visible .system-copy {
  transition-delay: 40ms;
}

.system-section.is-visible .system-panel-wrap {
  transition-delay: 180ms;
}

.system-copy h2 {
  margin: 18px 0 0;
  display: flex;
  flex-direction: column;
  font-size: var(--fs-title-xl);
  line-height: 0.88;
  font-weight: 800;
  letter-spacing: -0.08em;
}

.system-title-primary {
  color: #ffffff;
}

.system-title-secondary {
  color: rgba(113, 121, 139, 0.42);
}

.system-description {
  max-width: 760px;
  margin: 44px 0 0;
  color: rgba(202, 210, 225, 0.78);
  font-size: var(--fs-body-lg);
  line-height: 1.9;
  letter-spacing: -0.02em;
}

.system-feature-grid {
  margin-top: 54px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 34px 46px;
}

.system-feature-card {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 18px;
  align-items: start;
}

.system-feature-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
  color: #1f8dff;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.04),
    0 14px 30px rgba(0, 0, 0, 0.2);
}

.system-feature-card__icon svg {
  width: 38px;
  height: 38px;
  filter: drop-shadow(0 0 18px rgba(31, 141, 255, 0.16));
}

.system-feature-card h3 {
  margin: 8px 0 0;
  color: #ffffff;
  font-size: var(--fs-title-sm);
  line-height: 1.14;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.system-feature-card p {
  margin: 14px 0 0;
  color: rgba(156, 167, 189, 0.72);
  font-size: 0.98rem;
  line-height: 1.8;
}

.system-panel-wrap {
  position: relative;
}

.system-panel-glow {
  position: absolute;
  right: 8%;
  top: 10%;
  width: 48%;
  height: 36%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(31, 141, 255, 0.18), transparent 70%);
  filter: blur(40px);
  pointer-events: none;
}

.system-device-showcase {
  position: relative;
  min-height: 760px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.system-device-showcase::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.08;
  background:
    radial-gradient(circle at 20% 16%, rgba(255, 255, 255, 0.18), transparent 10%),
    radial-gradient(circle at 84% 14%, rgba(31, 141, 255, 0.2), transparent 12%),
    radial-gradient(circle at 74% 86%, rgba(255, 255, 255, 0.12), transparent 16%);
}

.system-phone {
  position: relative;
  z-index: 2;
  width: min(100%, 420px);
  margin: 0 auto;
}

.system-phone__bezel {
  position: relative;
  padding: 14px;
  border-radius: 56px;
  background:
    linear-gradient(145deg, rgba(38, 42, 52, 0.98), rgba(9, 11, 16, 0.98));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    inset 0 -1px 0 rgba(255, 255, 255, 0.03),
    0 30px 80px rgba(0, 0, 0, 0.34),
    0 0 0 1px rgba(255, 255, 255, 0.04);
}

.system-phone__notch {
  position: absolute;
  left: 50%;
  top: 12px;
  width: 36%;
  height: 30px;
  transform: translateX(-50%);
  border-radius: 0 0 22px 22px;
  background: #090b10;
  z-index: 3;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.04),
    inset 0 -1px 0 rgba(255, 255, 255, 0.04);
}

.system-phone__screen {
  position: relative;
  overflow: hidden;
  border-radius: 44px;
  background:
    radial-gradient(circle at 18% 12%, rgba(31, 141, 255, 0.14), transparent 22%),
    radial-gradient(circle at 82% 88%, rgba(94, 38, 151, 0.16), transparent 24%),
    linear-gradient(180deg, #09111d 0%, #060b14 100%);
  aspect-ratio: 384 / 784;
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.system-app {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 18px 18px 0;
  color: #eef4ff;
}

.system-app__topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.system-app__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #6fb4ff;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.system-app__avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 34%, #f4d7b7 0 22%, transparent 23%),
    radial-gradient(circle at 50% 58%, #68b66e 0 34%, transparent 35%),
    linear-gradient(180deg, #c99a62 0%, #8d6338 100%);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.28);
}

.system-app__gear {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  color: rgba(168, 186, 220, 0.72);
}

.system-app__gear svg {
  width: 18px;
  height: 18px;
}

.system-app__hero {
  margin-top: 26px;
}

.system-app__hero h3 {
  margin: 0;
  color: #f7fbff;
  font-size: 2rem;
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.06em;
}

.system-app__hero p {
  margin: 10px 0 0;
  color: rgba(158, 176, 206, 0.78);
  font-size: 0.98rem;
  font-weight: 600;
}

.system-app__device-card {
  margin-top: 26px;
  padding: 22px 20px 20px;
  border-radius: 28px;
  border: 1px solid rgba(124, 156, 210, 0.14);
  background:
    linear-gradient(180deg, rgba(15, 23, 38, 0.96), rgba(10, 16, 28, 0.98));
  box-shadow:
    0 20px 44px rgba(0, 0, 0, 0.24),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.system-device-card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.system-device-card__status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #24b26b;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.system-device-card__status::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #24b26b;
  box-shadow: 0 0 10px rgba(36, 178, 107, 0.34);
}

.system-device-card__head h4 {
  margin: 12px 0 0;
  color: #f4f8ff;
  font-size: 1.5rem;
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -0.05em;
}

.system-device-card__head p {
  margin: 12px 0 0;
  color: rgba(146, 166, 197, 0.76);
  font-size: 0.9rem;
  font-weight: 600;
}

.system-device-card__screen {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(22, 44, 76, 0.94) 0%, rgba(13, 29, 52, 0.98) 100%);
  color: #4d9eff;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    0 12px 24px rgba(0, 0, 0, 0.18);
}

.system-device-card__screen svg {
  width: 28px;
  height: 28px;
}

.system-device-card__metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.system-metric-card {
  padding: 16px 14px 14px;
  border-radius: 18px;
  border: 1px solid rgba(120, 145, 190, 0.12);
  background: linear-gradient(180deg, rgba(18, 27, 42, 0.9) 0%, rgba(12, 20, 32, 0.96) 100%);
}

.system-metric-card__label {
  display: block;
  color: rgba(132, 152, 186, 0.82);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.system-metric-card strong {
  display: block;
  margin-top: 14px;
  color: #f4f8ff;
  font-size: 2rem;
  line-height: 1;
  font-weight: 800;
  letter-spacing: -0.06em;
}

.system-metric-card strong span {
  margin-left: 4px;
  color: rgba(150, 168, 198, 0.86);
  font-size: 0.46em;
  font-weight: 700;
}

.system-metric-card__bar {
  overflow: hidden;
  height: 6px;
  margin-top: 18px;
  border-radius: 999px;
  background: rgba(120, 138, 170, 0.24);
}

.system-metric-card__fill {
  display: block;
  height: 100%;
  border-radius: inherit;
}

.system-metric-card__fill-blue {
  width: 84%;
  background: linear-gradient(90deg, #1d74ec 0%, #2b8cff 100%);
}

.system-metric-card__fill-green {
  width: 42%;
  background: linear-gradient(90deg, #168b74 0%, #23b38d 100%);
}

.system-device-card__actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 14px;
}

.system-device-card__button {
  min-height: 52px;
  border: 0;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(24, 34, 52, 0.98) 0%, rgba(15, 24, 39, 0.98) 100%);
  color: #dce7fb;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.system-device-card__button-primary {
  background: linear-gradient(180deg, #1974e7 0%, #1467d1 100%);
  color: #ffffff;
  box-shadow: 0 14px 28px rgba(25, 116, 231, 0.22);
}

.system-app__bind-card {
  margin-top: 20px;
  flex: 1;
  min-height: 176px;
  border-radius: 24px;
  border: 2px dashed rgba(113, 140, 184, 0.34);
  background: linear-gradient(180deg, rgba(11, 17, 29, 0.72), rgba(8, 13, 24, 0.9));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.system-app__plus {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  color: #1f7aff;
  font-size: 2rem;
  line-height: 1;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    0 10px 24px rgba(0, 0, 0, 0.18);
}

.system-app__bind-card p {
  margin: 0;
  color: #d6e3f8;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.system-app__nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: center;
  min-height: 74px;
  margin: 14px -18px 0;
  padding: 0 18px;
  border-top: 1px solid rgba(116, 136, 170, 0.2);
  background: rgba(7, 12, 21, 0.88);
}

.system-app__nav span {
  text-align: center;
  color: rgba(137, 156, 189, 0.82);
  font-size: 0.82rem;
  font-weight: 700;
}

.system-app__nav .is-active {
  color: #1f7aff;
}

.system-float,
.system-rank-strip,
.system-rank-bar {
  display: none;
}

.system-phone__image {
  display: none;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.presale-section {
  position: relative;
  min-height: 100svh;
  padding: 112px 18px 130px;
  background: transparent;
  overflow: hidden;
  display: flex;
  align-items: center;
}

.presale-section::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 72px 72px;
}

.presale-section__inner {
  position: relative;
  z-index: 1;
  width: min(100%, var(--max-width));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.92fr);
  gap: 56px;
  align-items: stretch;
}

.presale-copy,
.presale-card-wrap {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 760ms ease,
    transform 980ms cubic-bezier(0.2, 0.9, 0.2, 1);
}

.presale-section.is-visible .presale-copy,
.presale-section.is-visible .presale-card-wrap {
  opacity: 1;
  transform: translateY(0);
}

.presale-section.is-visible .presale-copy {
  transition-delay: 40ms;
}

.presale-section.is-visible .presale-card-wrap {
  transition-delay: 180ms;
}

.presale-tag {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid rgba(54, 122, 255, 0.28);
  color: #3197ff;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  background: rgba(15, 26, 42, 0.58);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.presale-copy {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  min-height: 100%;
  padding: 18px 0;
}

.presale-copy h2 {
  margin: 16px 0 0;
  display: flex;
  flex-direction: column;
  max-width: none;
  font-size: var(--fs-title-xl);
  line-height: 0.88;
  font-weight: 800;
  letter-spacing: -0.08em;
}

.presale-title-primary {
  color: #ffffff;
}

.presale-title-secondary {
  color: rgba(113, 121, 139, 0.42);
}

.presale-description {
  max-width: 560px;
  margin: 22px 0 0;
  color: var(--device-muted);
  font-size: var(--fs-body);
  line-height: 1.9;
}

.presale-benefits {
  margin-top: auto;
  padding-top: 26px;
  display: grid;
  flex: 1;
  grid-template-rows: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.presale-benefit {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 18px;
  align-items: center;
  min-height: 0;
  height: 100%;
  padding: 18px 20px;
  border: 1px solid rgba(136, 162, 255, 0.14);
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(18, 22, 30, 0.82), rgba(10, 12, 19, 0.94));
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(12px);
}

.presale-benefit__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 10px;
  border-radius: 999px;
  border: 1px solid rgba(136, 162, 255, 0.2);
  color: var(--device-cyan);
  font-size: 1rem;
  font-weight: 700;
  background: rgba(136, 162, 255, 0.08);
}

.presale-benefit p {
  margin: 0;
  color: var(--device-silver);
  font-size: var(--fs-title-sm);
  line-height: 1.6;
  font-weight: 600;
  letter-spacing: -0.03em;
}

.presale-card-wrap {
  position: relative;
  display: flex;
  align-items: stretch;
  height: 100%;
  padding: 18px 0;
}

.presale-badge {
  position: absolute;
  top: -18px;
  left: 34px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  padding: 0 28px;
  border-radius: 18px;
  background: linear-gradient(180deg, #1a83ff 0%, #0e6ff6 100%);
  color: #041224;
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  box-shadow: 0 18px 34px rgba(22, 118, 255, 0.28);
}

.presale-card {
  position: relative;
  width: 100%;
  min-height: 100%;
  padding: 76px 42px 36px;
  border-radius: 40px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background:
    linear-gradient(180deg, rgba(8, 12, 19, 0.98), rgba(6, 10, 16, 0.98));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.04),
    0 32px 80px rgba(0, 0, 0, 0.28);
}

.presale-card__label {
  display: inline-block;
  color: rgba(213, 220, 234, 0.56);
  font-size: var(--fs-label);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.presale-price-line {
  display: flex;
  align-items: flex-end;
  gap: 16px;
  margin-top: 16px;
}

.presale-price {
  color: #ffffff;
  font-size: clamp(3.4rem, 6.4vw, 4.9rem);
  line-height: 0.94;
  font-weight: 800;
  letter-spacing: -0.08em;
}

.presale-price-old {
  padding-bottom: 10px;
  color: rgba(91, 104, 132, 0.82);
  font-size: clamp(1.5rem, 2.2vw, 2.2rem);
  font-weight: 700;
  text-decoration: line-through;
}

.presale-countdown {
  margin-top: 38px;
  padding: 24px 28px 22px;
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.04);
}

.presale-countdown__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: rgba(187, 196, 218, 0.58);
  font-size: var(--fs-label);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.presale-live {
  color: #1f8dff;
  font-size: 0.9rem;
}

.presale-timer {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 22px;
}

.presale-time-box {
  text-align: center;
}

.presale-time-box strong {
  display: block;
  color: #ffffff;
  font-size: clamp(2rem, 3.2vw, 2.9rem);
  line-height: 1;
  font-weight: 800;
  letter-spacing: -0.06em;
}

.presale-time-box span {
  display: block;
  margin-top: 10px;
  color: rgba(160, 172, 198, 0.54);
  font-size: 0.82rem;
  font-weight: 700;
}

.presale-action {
  margin-top: 54px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  width: 100%;
  min-height: 76px;
  border-radius: 999px;
  background: linear-gradient(180deg, #ffffff 0%, #f3f5f8 100%);
  color: #03070d;
  text-decoration: none;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  box-shadow:
    0 16px 40px rgba(255, 255, 255, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.55);
  transition:
    transform 220ms ease,
    box-shadow 220ms ease,
    background 220ms ease,
    color 220ms ease;
}

.presale-action:hover,
.presale-action:focus-visible {
  transform: translateY(-2px);
  background: linear-gradient(180deg, var(--accent-strong) 0%, var(--accent) 100%);
  color: #ffffff;
  box-shadow:
    0 20px 44px rgba(90, 112, 255, 0.32),
    inset 0 1px 0 rgba(255, 255, 255, 0.16);
}

.presale-action__arrow {
  font-size: 1.22em;
}

.presale-footnote {
  margin: 22px 0 0;
  color: rgba(127, 139, 164, 0.58);
  text-align: center;
  font-size: var(--fs-label);
  font-weight: 700;
  letter-spacing: 0.05em;
}

.help-section {
  position: relative;
  min-height: 100svh;
  padding: 108px 18px 128px;
  background: linear-gradient(180deg, #020304 0%, #030405 100%);
  overflow: hidden;
  display: flex;
  align-items: center;
}

.help-section::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.05;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 72px 72px;
}

.help-section__inner {
  position: relative;
  z-index: 1;
  width: min(100%, var(--max-width));
  margin: 0 auto;
  display: grid;
  gap: 34px;
}

.help-copy h2 {
  margin: 16px 0 0;
  display: flex;
  flex-direction: column;
  font-size: var(--fs-title-xl);
  line-height: 0.88;
  font-weight: 800;
  letter-spacing: -0.08em;
}

.help-title-primary {
  color: #ffffff;
}

.help-title-secondary {
  color: rgba(113, 121, 139, 0.42);
}

.help-description {
  max-width: 760px;
  margin: 22px 0 0;
  color: var(--text-soft);
  font-size: var(--fs-body);
  line-height: 1.9;
}

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

.help-card {
  padding: 28px 26px;
  border-radius: 30px;
  border: 1px solid rgba(136, 162, 255, 0.12);
  background:
    linear-gradient(180deg, rgba(15, 18, 24, 0.92), rgba(8, 11, 16, 0.96));
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.2);
}

.help-card__label {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid rgba(136, 162, 255, 0.14);
  background: rgba(136, 162, 255, 0.06);
  color: var(--device-cyan);
  font-size: var(--fs-label);
  font-weight: 600;
  letter-spacing: 0.08em;
}

.help-card h3 {
  margin: 18px 0 0;
  color: #ffffff;
  font-size: var(--fs-title-sm);
  line-height: 1.24;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.help-card p {
  margin: 14px 0 0;
  color: rgba(196, 208, 226, 0.72);
  font-size: 0.98rem;
  line-height: 1.8;
}

.site-footer {
  position: relative;
  padding: 28px 18px 42px;
  background: linear-gradient(180deg, #030405 0%, #020304 100%);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.04;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 72px 72px;
}

.site-footer__inner {
  position: relative;
  z-index: 1;
  width: min(100%, var(--max-width));
  margin: 0 auto;
  padding-top: 26px;
  border-top: 1px solid rgba(136, 162, 255, 0.12);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px 36px;
  align-items: start;
}

.site-footer__intro,
.site-footer__copyright {
  margin: 14px 0 0;
  color: rgba(196, 208, 226, 0.58);
  font-size: 0.94rem;
  line-height: 1.8;
}

.site-footer__nav,
.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
}

.site-footer__nav a,
.site-footer__links a {
  color: rgba(196, 208, 226, 0.76);
  text-decoration: none;
  font-size: var(--fs-label);
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: color 180ms ease;
}

.site-footer__nav a:hover,
.site-footer__nav a:focus-visible,
.site-footer__links a:hover,
.site-footer__links a:focus-visible {
  color: #ffffff;
}

.site-footer__meta {
  justify-self: end;
  text-align: right;
  display: grid;
  gap: 12px;
  align-items: start;
}

.site-footer__links {
  justify-content: flex-end;
}

.device-orbit {
  position: absolute;
  left: 50%;
  top: 56%;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(255, 255, 255, 0.09);
  opacity: 0.4;
}

.device-orbit-1 {
  width: 420px;
  height: 420px;
}

.device-orbit-2 {
  width: 540px;
  height: 540px;
}

  .device-orbit-3 {
    width: 660px;
    height: 660px;
    opacity: 0.18;
  }

@keyframes hero-rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes device-float {
  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-8px);
  }
}

@keyframes section-line-flow {
  0% {
    background-position: 0% 0%, 100% 100%;
  }

  50% {
    background-position: 60% 28%, 42% 72%;
  }

  100% {
    background-position: 120% 58%, -20% 42%;
  }
}

@keyframes stars-drift-back {
  from {
    transform: translate3d(0, 0, 0);
  }

  to {
    transform: translate3d(-18px, 28px, 0);
  }
}

@keyframes stars-drift-front {
  from {
    transform: translate3d(0, 0, 0);
  }

  to {
    transform: translate3d(22px, 36px, 0);
  }
}

@keyframes stars-flicker {
  0%,
  100% {
    opacity: 0.22;
  }

  50% {
    opacity: 0.34;
  }
}

@keyframes metric-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(126, 216, 255, 0.5);
    opacity: 0.8;
  }

  70% {
    box-shadow: 0 0 0 10px rgba(126, 216, 255, 0);
    opacity: 1;
  }

  100% {
    box-shadow: 0 0 0 0 rgba(126, 216, 255, 0);
    opacity: 0.8;
  }
}

@keyframes metric-breathe {
  0%,
  100% {
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, 0.04),
      0 18px 42px rgba(0, 0, 0, 0.24);
  }

  50% {
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, 0.05),
      0 22px 48px rgba(0, 0, 0, 0.28),
      0 0 24px rgba(126, 216, 255, 0.08);
  }
}

@keyframes spec-scan {
  0%,
  12% {
    left: -42%;
    opacity: 0;
  }

  20%,
  46% {
    left: 116%;
    opacity: 1;
  }

  100% {
    left: 116%;
    opacity: 0;
  }
}

@keyframes system-scan {
  0%,
  18% {
    left: -24%;
    opacity: 0;
  }

  28%,
  62% {
    left: 108%;
    opacity: 1;
  }

  100% {
    left: 108%;
    opacity: 0;
  }
}

@keyframes rank-scroll {
  from {
    transform: translate3d(0, 0, 0);
  }

  to {
    transform: translate3d(-100%, 0, 0);
  }
}

@media (max-width: 960px) {
  .site-header__inner {
    grid-template-columns: 1fr;
    justify-items: center;
    border-radius: 28px;
    gap: 16px;
  }

  .nav-links {
    flex-wrap: wrap;
    gap: 14px 18px;
  }

  .core-section {
    padding: 84px 18px 92px;
  }

  .core-section__inner {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto;
    gap: 20px;
  }

  .core-card,
  .core-card-large,
  .core-card-wide {
    grid-column: auto;
    grid-row: auto;
    min-height: 240px;
  }

  .core-card {
    padding: 30px;
    border-radius: 28px;
  }

  .core-card__icon {
    width: 70px;
    height: 70px;
    border-radius: 20px;
  }

  .core-card__icon svg {
    width: 50px;
    height: 50px;
  }

  .core-card__content {
    margin-top: 42px;
  }

  .core-card__content h2 {
    font-size: clamp(2.2rem, 5.2vw, 3.5rem);
  }

  .core-card__content h3 {
    font-size: clamp(1.7rem, 4.6vw, 2.6rem);
  }

  .core-card__content p,
  .core-card-wide .core-card__content p {
    max-width: none;
    margin-top: 20px;
  }

  .core-card__tag {
    left: 30px;
    bottom: 28px;
  }

  .device-section {
    padding-top: 88px;
    padding-bottom: 92px;
  }

  .mission-section {
    padding: 84px 18px 96px;
  }

  .mission-section__inner h2 {
    max-width: none;
  }

  .device-section__inner {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .device-copy h2,
  .device-description {
    max-width: none;
  }

  .device-copy,
  .device-visual {
    display: block;
  }

  .device-visual__frame {
    min-height: 520px;
    padding: 24px;
  }

  .device-metric {
    min-width: 156px;
    padding: 12px 14px;
  }

  .device-metric-top {
    top: 18px;
    left: 18px;
  }

  .device-metric-right {
    top: 18px;
    right: 18px;
  }

  .device-metric__value {
    font-size: 1.26rem;
  }

  .device-spec-board {
    right: 18px;
    bottom: 18px;
    width: 210px;
    padding: 14px;
  }

  .device-chip-row {
    left: 18px;
    bottom: 18px;
    max-width: 250px;
  }

  .device-visual__halo {
    width: 82%;
    height: 34%;
  }

  .device-visual__ring {
    width: 82%;
  }

  .device-visual__base {
    width: 78%;
  }

  .device-product-stage {
    height: 320px;
    margin-top: 96px;
  }

  .device-orbit-1 {
    width: 330px;
    height: 330px;
  }

  .device-orbit-2 {
    width: 420px;
    height: 420px;
  }

  .device-orbit-3 {
    width: 500px;
    height: 500px;
  }

  .device-product-image {
    width: min(100%, 500px);
  }

  .system-section {
    padding: 88px 18px 100px;
  }

  .system-section__inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .system-description {
    max-width: none;
  }

  .system-feature-grid {
    gap: 26px 24px;
  }

  .system-device-showcase {
    min-height: 0;
    padding: 22px 0 12px;
  }

  .system-phone {
    width: min(100%, 420px);
  }

  .system-app__hero h3 {
    font-size: 1.88rem;
  }

  .system-app__bind-card {
    min-height: 164px;
  }

  .help-section {
    padding: 92px 18px 104px;
  }

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

  .site-footer__inner {
    grid-template-columns: 1fr;
  }

  .site-footer__meta {
    justify-self: start;
    text-align: left;
  }

  .presale-section {
    padding: 92px 18px 104px;
  }

  .presale-section__inner {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .presale-copy {
    height: auto;
    min-height: auto;
    padding: 0;
  }

  .presale-copy h2,
  .presale-description {
    max-width: none;
  }

  .presale-benefits {
    margin-top: 34px;
    padding-top: 0;
    flex: initial;
    grid-template-rows: none;
  }

  .presale-card-wrap {
    height: auto;
    padding: 18px 0 0;
  }

  .presale-card {
    padding: 72px 28px 32px;
    border-radius: 34px;
  }

  .presale-badge {
    left: 26px;
    min-height: 52px;
    padding: 0 24px;
    font-size: 0.88rem;
  }
}

@media (max-width: 640px) {
  .site-header {
    inset: 12px 0 auto;
    padding: 0 12px;
  }

  .site-header__inner {
    padding: 16px;
  }

  .nav-links {
    gap: 10px 14px;
  }

  .nav-links a {
    font-size: 0.79rem;
  }

  .nav-cta {
    width: 100%;
  }

  .hero-content {
    width: min(calc(100% - 28px), 860px);
    margin-top: 76px;
  }

  .hero-description {
    font-size: 0.93rem;
    line-height: 1.8;
  }

  .primary-button {
    min-height: 54px;
    padding: 0 30px;
    font-size: 0.95rem;
  }

  .hero-grid {
    background-size: 48px 48px;
  }

  .core-section {
    padding: 72px 12px 80px;
  }

  .core-section::before {
    background-size: 44px 44px;
  }

  .core-section__inner {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .core-card,
  .core-card-large,
  .core-card-wide {
    min-height: 0;
    padding: 24px 22px 84px;
    border-radius: 24px;
  }

  .core-card__icon {
    width: 62px;
    height: 62px;
    border-radius: 18px;
  }

  .core-card__icon svg {
    width: 44px;
    height: 44px;
  }

  .core-card__content {
    margin-top: 34px;
  }

  .core-card__content h2 {
    font-size: clamp(2rem, 10vw, 2.9rem);
    line-height: 1.04;
  }

  .core-card__content h3 {
    font-size: clamp(1.6rem, 8vw, 2.2rem);
    line-height: 1.08;
  }

  .core-card__content p,
  .core-card-wide .core-card__content p {
    margin-top: 16px;
    font-size: 0.94rem;
    line-height: 1.78;
  }

  .core-card__tag {
    left: 22px;
    bottom: 22px;
    min-height: 40px;
    padding: 0 14px;
    font-size: 0.72rem;
    letter-spacing: 0.1em;
  }

  .device-section {
    padding: 72px 12px 80px;
  }

  .mission-section {
    padding: 72px 12px 80px;
  }

  .mission-section::before {
    background-size: 44px 44px;
  }

  .mission-section__inner h2 {
    font-size: clamp(2.4rem, 10vw, 3.4rem);
    gap: 8px;
    line-height: 1.14;
  }

  .mission-highlight {
    margin-top: 22px;
    gap: 8px;
    font-size: clamp(1.7rem, 8vw, 2.5rem);
    line-height: 1.12;
    white-space: normal;
  }

  .device-section::before {
    background-size: 42px 42px;
    opacity: 0.06;
  }

  .device-copy h2 {
    font-size: clamp(2.8rem, 14vw, 4.4rem);
  }

  .device-description {
    font-size: 0.95rem;
    line-height: 1.8;
  }

  .device-feature-card {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 18px;
    border-radius: 22px;
  }

  .device-feature-card:hover,
  .device-feature-card:focus-within {
    transform: translateY(-4px);
  }

  .feature-index {
    justify-self: start;
  }

  .device-feature-card h3 {
    font-size: 1rem;
  }

  .device-feature-card p {
    font-size: 0.92rem;
  }

  .device-visual__frame {
    min-height: 360px;
    padding: 16px;
    border-radius: 24px;
  }

  .device-metric {
    min-width: 0;
    gap: 4px;
    padding: 10px 12px;
    border-radius: 16px;
  }

  .device-metric-top {
    top: 14px;
    left: 14px;
  }

  .device-metric-right {
    top: 14px;
    right: 14px;
    bottom: auto;
  }

  .device-metric__label,
  .spec-title,
  .device-spec-item__name {
    font-size: 0.64rem;
  }

  .device-metric__value {
    font-size: 1rem;
  }

  .device-metric__hint {
    font-size: 0.66rem;
  }

  .device-spec-board {
    position: relative;
    left: auto;
    right: auto;
    bottom: auto;
    width: 100%;
    margin-top: 18px;
    padding: 14px;
    border-radius: 18px;
  }

  .device-chip-row {
    position: relative;
    left: auto;
    right: auto;
    bottom: auto;
    margin-top: 16px;
    max-width: none;
  }

  .device-visual__ring {
    bottom: 10%;
    width: 90%;
  }

  .device-visual__base {
    bottom: 7%;
    width: 86%;
  }

  .device-product-stage {
    height: 220px;
    margin-top: 72px;
  }

  .device-orbit-1 {
    width: 210px;
    height: 210px;
  }

  .device-orbit-2 {
    width: 280px;
    height: 280px;
  }

  .device-orbit-3 {
    width: 340px;
    height: 340px;
  }

  .device-product-image {
    width: min(100%, 320px);
  }

  .system-section {
    padding: 72px 12px 80px;
  }

  .system-section::before {
    background-size: 44px 44px;
  }

  .system-copy h2 {
    font-size: clamp(2.8rem, 17vw, 4.6rem);
  }

  .system-description {
    margin-top: 28px;
    font-size: 1rem;
    line-height: 1.82;
  }

  .system-feature-grid {
    margin-top: 34px;
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .system-feature-card {
    grid-template-columns: 62px 1fr;
    gap: 14px;
  }

  .system-feature-card__icon {
    width: 58px;
    height: 58px;
    border-radius: 18px;
  }

  .system-feature-card__icon svg {
    width: 30px;
    height: 30px;
  }

  .system-feature-card h3 {
    font-size: 1.28rem;
  }

  .system-feature-card p {
    margin-top: 10px;
    font-size: 0.92rem;
    line-height: 1.72;
  }

  .system-device-showcase {
    min-height: 0;
    padding: 14px 0 6px;
  }

  .system-phone {
    width: min(100%, 360px);
  }

  .system-phone__bezel {
    padding: 10px;
    border-radius: 36px;
  }

  .system-phone__notch {
    top: 8px;
    height: 24px;
    border-radius: 0 0 18px 18px;
  }

  .system-phone__screen {
    border-radius: 28px;
  }

  .system-app {
    padding: 14px 14px 0;
  }

  .system-app__hero {
    margin-top: 20px;
  }

  .system-app__hero h3 {
    font-size: 1.72rem;
  }

  .system-app__hero p {
    font-size: 0.9rem;
  }

  .system-app__device-card {
    margin-top: 20px;
    padding: 18px 16px 16px;
    border-radius: 24px;
  }

  .system-device-card__head h4 {
    font-size: 1.34rem;
  }

  .system-device-card__head p,
  .system-app__bind-card p {
    font-size: 0.84rem;
  }

  .system-device-card__screen {
    width: 50px;
    height: 50px;
    border-radius: 16px;
  }

  .system-device-card__metrics,
  .system-device-card__actions {
    grid-template-columns: 1fr;
  }

  .system-metric-card {
    padding: 14px 12px 12px;
  }

  .system-metric-card strong {
    font-size: 1.72rem;
  }

  .system-device-card__button {
    min-height: 48px;
    font-size: 0.94rem;
  }

  .system-app__bind-card {
    min-height: 148px;
    margin-top: 16px;
    border-radius: 20px;
  }

  .system-app__plus {
    width: 52px;
    height: 52px;
    font-size: 1.8rem;
  }

  .system-app__nav {
    min-height: 66px;
    margin: 12px -14px 0;
    padding: 0 14px;
  }

  .system-app__nav span {
    font-size: 0.74rem;
  }

  .help-section {
    padding: 76px 12px 88px;
  }

  .help-section::before {
    background-size: 44px 44px;
  }

  .help-copy h2 {
    font-size: clamp(2.8rem, 14vw, 4.4rem);
  }

  .help-description {
    font-size: 0.98rem;
    line-height: 1.82;
  }

  .help-card {
    padding: 22px 20px;
    border-radius: 24px;
  }

  .help-card h3 {
    font-size: 1.06rem;
  }

  .help-card p {
    font-size: 0.92rem;
  }

  .site-footer {
    padding: 24px 12px 34px;
  }

  .site-footer__inner {
    gap: 20px;
    padding-top: 22px;
  }

  .site-footer__intro,
  .site-footer__copyright {
    font-size: 0.86rem;
    line-height: 1.72;
  }

  .site-footer__nav,
  .site-footer__links {
    gap: 10px 14px;
  }

  .presale-section {
    padding: 76px 12px 86px;
  }

  .presale-section::before {
    background-size: 44px 44px;
    opacity: 0;
  }

  .presale-tag {
    min-height: 40px;
    padding: 0 14px;
    font-size: 0.74rem;
  }

  .presale-copy h2 {
    margin-top: 24px;
    font-size: clamp(2.8rem, 14vw, 4.4rem);
  }

  .presale-description {
    margin-top: 22px;
    font-size: 0.98rem;
    line-height: 1.8;
  }

  .presale-benefits {
    margin-top: 28px;
    padding-top: 0;
    flex: initial;
    grid-template-rows: none;
    gap: 14px;
  }

  .presale-benefit {
    grid-template-columns: 1fr;
    gap: 14px;
    height: auto;
    padding: 18px;
  }

  .presale-benefit__icon {
    justify-self: start;
    min-height: 40px;
    width: auto;
    height: auto;
    border-radius: 999px;
    font-size: 0.9rem;
  }

  .presale-benefit p {
    font-size: 1rem;
    line-height: 1.6;
  }

  .presale-card {
    padding: 68px 18px 24px;
    border-radius: 28px;
  }

  .presale-badge {
    left: 18px;
    top: -16px;
    min-height: 44px;
    padding: 0 18px;
    border-radius: 16px;
    font-size: 0.76rem;
  }

  .presale-card__label {
    font-size: 0.9rem;
  }

  .presale-price-line {
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
  }

  .presale-price {
    font-size: clamp(2.8rem, 16vw, 4rem);
  }

  .presale-price-old {
    padding-bottom: 0;
    font-size: 1.35rem;
  }

  .presale-countdown {
    margin-top: 32px;
    padding: 22px 18px 20px;
    border-radius: 24px;
  }

  .presale-countdown__head {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    font-size: 0.82rem;
  }

  .presale-timer {
    gap: 10px;
    margin-top: 20px;
  }

  .presale-time-box strong {
    font-size: 1.72rem;
  }

  .presale-time-box span {
    margin-top: 8px;
    font-size: 0.74rem;
  }

  .presale-action {
    min-height: 62px;
    margin-top: 44px;
    border-radius: 999px;
    font-size: 0.94rem;
    gap: 14px;
  }

  .presale-footnote {
    margin-top: 20px;
    font-size: 0.76rem;
    line-height: 1.6;
  }
}