/* ===== RESET & BASE ===== */

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

html {
  min-height: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  background: var(--bg);
}

html[data-theme="light"] {
  background:
    radial-gradient(800px at 20% 0%, rgb(var(--primary-rgb) / 0.08), transparent 60%),
    radial-gradient(700px at 80% 10%, rgb(var(--accent-rgb) / 0.08), transparent 55%),
    var(--bg);
}

html[data-theme="dark"] {
  background:
    radial-gradient(620px at 20% 10%, rgb(var(--primary-rgb) / 0.22), transparent 60%),
    radial-gradient(540px at 80% 20%, rgb(var(--accent-rgb) / 0.16), transparent 55%),
    var(--bg);
}

body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text);
  background: transparent;
  -webkit-font-smoothing: antialiased;
}

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

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

button {
  font: inherit;
  color: inherit;
  border: 0;
  background: none;
  cursor: pointer;
}

main {
  background: transparent;
}

/* ===== LAYOUT PRIMITIVES ===== */

.container {
  max-width: var(--container-width);
  width: 100%;
  margin-inline: auto;
  padding-inline: var(--page-padding-x);
}

.section {
  padding-block: var(--sp-8);
}

.section + .section {
  padding-top: var(--sp-8);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto var(--sp-4);
}

.section-title {
  font-size: var(--text-3xl);
  line-height: var(--leading-tight);
  letter-spacing: -0.03em;
  font-weight: 650;
  margin: 0 0 var(--sp-2);
}

.section-subtitle {
  font-size: var(--text-md);
  line-height: 1.62;
  color: var(--text-secondary);
  max-width: var(--content-max);
  margin: 0 auto;
}

.eyebrow {
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 600;
}

.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

@media (max-width: 768px) {
  .container {
    padding-inline: 20px;
  }

  .section {
    padding-block: var(--sp-6);
  }

  .section + .section {
    padding-top: var(--sp-6);
  }

  .section-header {
    margin-bottom: var(--sp-3);
  }

  .section-title {
    font-size: clamp(1.72rem, 2.6vw + 1.2rem, 2.1rem);
    line-height: 1.16;
    letter-spacing: -0.024em;
  }

  .section-subtitle {
    font-size: 1rem;
    line-height: 1.62;
    max-width: 42ch;
  }

  .card {
    padding: var(--card-padding-compact);
  }

  .card-title {
    font-size: clamp(1.18rem, 1.4vw + 0.98rem, 1.32rem);
  }

  .btn {
    min-height: 46px;
  }

  .btn--large {
    min-height: 52px;
    width: 100%;
  }
}

/* ===== COMPONENTS: CARD, BUTTON, TAGS ===== */

.card {
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  box-shadow: var(--shadow-sm);
  padding: var(--card-padding);
  border: 1px solid var(--border-subtle);
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast),
    border-color var(--transition-fast),
    background-color var(--transition-fast);
}

.card--soft {
  background: color-mix(in srgb, var(--surface-soft) 96%, transparent);
}

.card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--color-primary) 30%, var(--border-subtle));
  box-shadow:
    var(--shadow-md),
    0 0 0 1px color-mix(in srgb, var(--color-primary) 20%, transparent);
}

.card:active {
  transform: translateY(-2px);
}

.card-title {
  font-size: var(--text-xl);
  line-height: var(--leading-snug);
  font-weight: 600;
  margin: 0 0 var(--sp-1);
}

.card-text {
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: var(--control-height);
  padding-inline: 20px;
  padding-block: 10px;
  border-radius: var(--radius-pill);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  border: 1px solid transparent;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast),
    border-color var(--transition-fast);
}

.btn--primary {
  background-image: var(--gradient-primary);
  color: #ffffff;
  box-shadow: var(--glow-primary);
  background-size: 200% 200%;
  background-position: 20% 50%;
}

.btn--primary:hover {
  transform: translateY(-1px);
  background-position: 80% 50%;
  box-shadow:
    0 16px 40px rgb(var(--primary-rgb) / 0.45),
    0 0 0 1px rgba(255, 255, 255, 0.08);
}

.btn--primary:active {
  transform: translateY(0) scale(0.97);
}


.btn--large {
  min-height: var(--control-height-lg);
  padding-block: 14px;
  padding-inline: 26px;
  font-size: var(--text-md);
}

.btn:focus-visible,
.platform-card:focus-visible,
.accordion-trigger:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--color-primary) 65%, transparent);
  outline-offset: 2px;
}


/* ===== HEADER & NAV ===== */

.header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  overflow: visible;
  backdrop-filter: blur(18px);
  background:
    linear-gradient(
      to bottom,
      color-mix(in srgb, var(--surface) 88%, transparent),
      color-mix(in srgb, var(--surface) 92%, transparent)
    );
  border-bottom: 1px solid rgba(148, 163, 184, 0.18);
}

.header::before,
.header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  pointer-events: none;
  display: none;
}

.header::before {
  bottom: -2px;
  height: 12px;
  background:
    linear-gradient(
      180deg,
      rgba(255, 208, 92, 0.5) 0%,
      rgba(245, 166, 35, 0.34) 52%,
      rgba(245, 166, 35, 0) 100%
    );
  filter: blur(0.35px);
}

.header::after {
  bottom: -30px;
  height: 34px;
  background:
    radial-gradient(24px 22px at 9% 0, rgba(245, 166, 35, 0.32), transparent 74%),
    radial-gradient(30px 26px at 21% 0, rgba(255, 200, 72, 0.34), transparent 75%),
    radial-gradient(16px 30px at 38% 0, rgba(245, 166, 35, 0.31), transparent 76%),
    radial-gradient(32px 24px at 52% 0, rgba(255, 200, 72, 0.32), transparent 76%),
    radial-gradient(14px 34px at 64% 0, rgba(245, 166, 35, 0.3), transparent 78%),
    radial-gradient(30px 23px at 78% 0, rgba(255, 200, 72, 0.3), transparent 76%),
    radial-gradient(22px 20px at 89% 0, rgba(245, 166, 35, 0.28), transparent 75%);
  opacity: 0.92;
  filter: blur(0.4px);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  height: var(--header-height);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.brand img {
  border-radius: 0;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.nav__link {
  font-size: var(--text-sm);
  color: var(--text-muted);
  padding: 6px 0;
  position: relative;
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background-image: var(--gradient-primary);
  transition: width var(--transition-fast);
}

.nav__link:hover::after {
  width: 100%;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn--login {
  min-height: 36px;
  padding-inline: 14px;
  padding-block: 8px;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
}

.icon-btn {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--surface-soft) 90%, transparent);
  border: 1px solid var(--border-subtle);
  font-size: var(--text-xs);
}

.icon-btn--lang {
  padding-inline: 8px;
  width: auto;
  font-weight: 600;
}

.burger {
  display: none;
  width: 32px;
  height: 32px;
  border-radius: 999px;
  justify-content: center;
  align-items: center;
  gap: 4px;
  flex-direction: column;
  background: color-mix(in srgb, var(--surface-soft) 92%, transparent);
  border: 1px solid var(--border-subtle);
}

.burger span {
  width: 14px;
  height: 2px;
  border-radius: 999px;
  background: var(--text);
}

@media (max-width: 768px) {
  .header::before {
    height: 9px;
    opacity: 0.9;
  }

  .header::after {
    bottom: -20px;
    height: 22px;
    background:
      radial-gradient(18px 12px at 12% 0, rgba(245, 166, 35, 0.26), transparent 74%),
      radial-gradient(20px 14px at 34% 0, rgba(255, 200, 72, 0.24), transparent 74%),
      radial-gradient(12px 18px at 54% 0, rgba(245, 166, 35, 0.22), transparent 75%),
      radial-gradient(20px 14px at 74% 0, rgba(255, 200, 72, 0.24), transparent 74%),
      radial-gradient(14px 17px at 88% 0, rgba(245, 166, 35, 0.22), transparent 75%);
    opacity: 0.84;
  }

  .header__actions {
    gap: 6px;
  }

  .btn--login {
    min-height: 32px;
    padding-inline: 12px;
    padding-block: 6px;
    font-size: 0.7rem;
    letter-spacing: 0.07em;
  }

  .nav {
    position: fixed;
    inset-inline: 16px;
    top: calc(var(--header-height) + 10px);
    border-radius: var(--radius-xl);
    padding: 16px;
    background: color-mix(in srgb, var(--surface) 94%, transparent);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-md);
    flex-direction: column;
    align-items: flex-start;
    opacity: 0;
    transform: translateY(-6px);
    pointer-events: none;
    transition:
      opacity var(--transition-normal),
      transform var(--transition-normal);
  }

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

  .nav__link {
    min-height: 40px;
    display: inline-flex;
    align-items: center;
    width: 100%;
  }

  .burger {
    display: inline-flex;
  }
}

/* ===== HERO ===== */

.hero {
  position: relative;
  padding-top: var(--sp-7);
  padding-bottom: var(--sp-7);
  overflow: clip;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(900px circle at 14% 18%, rgb(var(--primary-rgb) / 0.22) 0%, transparent 62%),
    radial-gradient(760px circle at 86% 26%, rgb(var(--accent-rgb) / 0.18) 0%, transparent 60%),
    radial-gradient(880px circle at 62% 92%, rgb(var(--primary-rgb) / 0.14) 0%, transparent 62%);
  opacity: 0.9;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 72%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, #000 72%, transparent 100%);
}

.hero::after {
  content: none;
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  column-gap: var(--sp-5);
  row-gap: var(--sp-4);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero__title {
  font-size: var(--text-4xl);
  line-height: 1.08;
  letter-spacing: -0.04em;
  margin: var(--sp-2) 0 var(--sp-3);
}

.hero__title > span {
  display: block;
}

.hero__subtitle {
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: var(--content-max);
  margin: 0;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
  align-items: center;
}

.hero__trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-1);
  margin-top: var(--sp-2);
  font-size: var(--text-xs);
  line-height: 1.4;
  color: var(--text-muted);
}

.hero__trust-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero__trust-dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--color-primary);
}

.hero__visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__halo {
  position: absolute;
  inset: -10% -8% -14%;
  border-radius: 999px;
  background:
    radial-gradient(circle at 52% 18%, rgb(var(--primary-rgb) / 0.24) 0%, rgb(var(--primary-rgb) / 0.14) 32%, rgb(var(--primary-rgb) / 0.05) 58%, transparent 82%),
    radial-gradient(circle at 28% 80%, rgb(var(--accent-rgb) / 0.16) 0%, rgb(var(--accent-rgb) / 0.08) 36%, transparent 78%),
    radial-gradient(circle at 68% 74%, rgb(var(--primary-rgb) / 0.1) 0%, transparent 72%);
  filter: blur(22px);
  opacity: 0.62;
}

.hero__mascot {
  position: relative;
  max-width: 360px;
  filter: drop-shadow(0 26px 50px rgba(15, 23, 42, 0.28));
  transform-origin: 50% 65%;
  animation: mascot-float 5.5s ease-in-out infinite;
}

@keyframes mascot-float {
  0% { transform: translateY(0) rotate(-0.6deg); }
  50% { transform: translateY(-6px) rotate(0.6deg); }
  100% { transform: translateY(0) rotate(-0.6deg); }
}

@media (max-width: 1024px) {
  .hero__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.9fr);
    gap: var(--sp-5);
  }

  .hero__mascot {
    max-width: 290px;
  }
}

@media (max-width: 768px) {
  .hero {
    padding-top: var(--sp-6);
    padding-bottom: var(--sp-6);
  }

  .hero__grid {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--sp-4);
  }

  .hero__visual {
    order: -1;
  }

  .hero__mascot {
    max-width: 248px;
  }

  .hero__title {
    font-size: clamp(2.02rem, 5.8vw + 0.9rem, 2.52rem);
    line-height: 1.1;
    margin: var(--sp-1) 0 var(--sp-2);
  }

  .hero__subtitle {
    font-size: 1.03rem;
    line-height: 1.62;
    max-width: 42ch;
  }

  .hero__cta {
    margin-top: var(--sp-3);
  }

  .hero__cta .btn {
    width: 100%;
  }

  .hero__trust-row {
    margin-top: var(--sp-2);
    gap: 10px;
  }
}

/* ===== FEATURES (network control) ===== */

.features {
  background: transparent;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--sp-3);
}

.feature-icon {
  width: 40px;
  height: 40px;
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-1);
  background: color-mix(in srgb, var(--color-primary-soft) 70%, var(--surface) 30%);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--color-primary) 18%, transparent),
    0 10px 26px rgb(var(--primary-rgb) / 0.14);
}

.features-grid .card:hover .feature-icon {
  transform: scale(1.05);
  transition: transform var(--transition-fast);
}

@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .features-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--sp-2);
  }
}

/* ===== HOW (ARCHITECTURE) ===== */

.architecture-layout {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: var(--sp-5);
  align-items: start;
}

.architecture-steps {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.how-step {
  position: relative;
  padding: var(--card-padding-compact) var(--card-padding-compact) var(--card-padding-compact) 72px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-subtle);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  box-shadow: var(--shadow-sm);
}

.how-step strong {
  display: block;
  margin-bottom: 8px;
  line-height: var(--leading-snug);
  font-weight: 600;
}

.how-step p {
  margin: 0;
  font-size: var(--text-base);
  color: var(--text-secondary);
}

.how-step::before {
  content: attr(data-step);
  position: absolute;
  left: 20px;
  top: 18px;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  font-weight: 700;
  background: var(--color-primary-soft);
  color: #ffffff;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.08),
    0 14px 30px rgb(var(--primary-rgb) / 0.16);
}

html[data-theme="light"] .how-step::before {
  background: rgb(var(--primary-rgb) / 0.14);
  color: var(--color-primary);
  box-shadow:
    0 0 0 1px rgb(var(--primary-rgb) / 0.12),
    0 14px 30px rgb(var(--primary-rgb) / 0.12);
}

.how-step:hover {
  border-color: color-mix(in srgb, var(--color-primary) 28%, var(--border-subtle));
}

.how-step:hover::before {
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.12),
    0 18px 40px rgb(var(--primary-rgb) / 0.22);
}

.architecture-media {
  justify-self: center;
}

.architecture-mascot {
  max-width: 320px;
}

@media (max-width: 960px) {
  .architecture-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--sp-3);
  }

  .architecture-media {
    display: none;
  }
}

/* ===== ZERO REQUESTS ===== */

.zero-requests {
  position: relative;
}

.zero-card {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: var(--sp-5);
  align-items: center;
  border-radius: var(--radius-2xl);
  padding: var(--sp-5) var(--sp-6);
  background:
    radial-gradient(circle at 20% 0%, rgb(var(--primary-rgb) / 0.18), transparent 55%),
    radial-gradient(circle at 80% 80%, rgb(var(--accent-rgb) / 0.18), transparent 60%),
    color-mix(in srgb, var(--surface-strong) 94%, transparent);
  color: #ffffff;
}

.zero-card__mascot {
  max-width: 260px;
}

.zero-card__body h2 {
  font-size: var(--text-2xl);
  line-height: var(--leading-tight);
  letter-spacing: -0.03em;
  margin: 0 0 var(--sp-2);
}

.zero-card__body p {
  color: rgba(241, 245, 249, 0.92);
  line-height: 1.62;
  margin: 0;
  max-width: 54ch;
}

.zero-card__list {
  margin-top: var(--sp-3);
  display: grid;
  gap: 8px;
  padding-left: 0;
  list-style: none;
}

.zero-card__list li::before {
  content: "•";
  margin-right: 6px;
}

@media (max-width: 900px) {
  .zero-card {
    grid-template-columns: minmax(0, 1fr);
    text-align: left;
    padding: var(--sp-4);
    gap: var(--sp-3);
  }

  .zero-card__visual {
    order: -1;
    justify-self: center;
  }

  .zero-card__mascot {
    max-width: 220px;
  }

  .zero-card__body p {
    max-width: 44ch;
  }
}

/* ===== PLATFORMS ===== */

.platform-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--sp-3);
}

.platform-card {
  position: relative;
  min-height: 124px;
  padding: 16px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  text-align: center;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast),
    background-color var(--transition-fast);
}

.platform-card .platform-title {
  font-size: var(--text-sm);
  line-height: 1.35;
  font-weight: 600;
}

.platform-icon {
  width: 28px;
  height: 28px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--color-primary-soft) 70%, var(--surface) 30%);
}

.platform-card:disabled {
  cursor: not-allowed;
  opacity: 0.72;
  transform: none;
}

.platform-card:disabled:hover {
  transform: none;
  box-shadow: none;
}

.platform-card:disabled .platform-icon {
  opacity: 0.9;
}

.platform-soon {
  display: block;
  min-height: 1.25em;
  line-height: 1.25;
  font-size: var(--text-xs);
  color: var(--text-muted);
  opacity: 0.9;
}

.platform-reco {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  font-size: 14px;
  line-height: 1;
  color: rgb(var(--accent-rgb) / 0.95);
  background: rgb(var(--accent-rgb) / 0.14);
  box-shadow:
    0 0 0 1px rgb(var(--accent-rgb) / 0.26),
    0 10px 22px rgb(0 0 0 / 0.18);
}

.platform-reco[hidden] {
  display: none;
}

.platform-soon[hidden] {
  display: block;
  visibility: hidden;
}

.platform-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  padding-inline: 12px;
  border-radius: var(--radius-pill);
  border: 1px solid rgb(var(--primary-rgb) / 0.55);
  background-image: var(--gradient-primary);
  background-size: 200% 200%;
  background-position: 20% 50%;
  color: #ffffff;
  box-shadow: 0 10px 26px rgb(var(--primary-rgb) / 0.22);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 2px;
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast),
    background-position var(--transition-fast),
    border-color var(--transition-fast);
}

.platform-card:hover .platform-download {
  background-position: 80% 50%;
  transform: translateY(-1px);
  box-shadow: 0 16px 38px rgb(var(--primary-rgb) / 0.28);
}

.platform-card:active .platform-download {
  transform: translateY(0) scale(0.98);
}

.platform-download.platform-download--disabled {
  background: color-mix(in srgb, var(--surface-soft) 92%, transparent);
  border-color: var(--border-strong);
  color: var(--text-muted);
  box-shadow: none;
  background-image: none;
  background-size: auto;
  background-position: 0 0;
  cursor: not-allowed;
}

.platform-card:hover .platform-download.platform-download--disabled,
.platform-card:active .platform-download.platform-download--disabled {
  transform: none;
  box-shadow: none;
  background-position: 0 0;
}

.platform-card.is-active {
  border-color: rgb(var(--primary-rgb) / 0.7);
  box-shadow: var(--glow-primary);
  transform: translateY(-1px);
}

.platform-card:hover {
  border-color: color-mix(in srgb, var(--color-primary) 35%, var(--border-subtle));
  transform: translateY(-1px);
}

.platform-card:active {
  transform: translateY(0);
}

@media (max-width: 1024px) {
  .platform-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .platform-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--sp-2);
  }

  .platform-card {
    min-height: 118px;
    padding: 14px;
  }
}

@media (max-width: 520px) {
  .platform-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .platform-card {
    min-height: 112px;
  }
}

/* ===== CTA ===== */

.cta-section {
  padding-top: var(--sp-6);
  padding-bottom: var(--sp-8);
}

.cta-card {
  text-align: center;
  border-radius: var(--radius-2xl);
  padding: var(--sp-5) var(--sp-6);
  background:
    radial-gradient(circle at 10% 0%, rgb(var(--primary-rgb) / 0.2), transparent 55%),
    radial-gradient(circle at 90% 0%, rgb(var(--accent-rgb) / 0.2), transparent 55%),
    color-mix(in srgb, var(--surface) 96%, transparent);
}

.cta-card h2 {
  font-size: var(--text-2xl);
  line-height: var(--leading-tight);
  letter-spacing: -0.03em;
  margin: 0 0 var(--sp-1);
}

.cta-card p {
  color: var(--text-secondary);
  margin-bottom: var(--sp-3);
  margin-top: 0;
}

@media (max-width: 768px) {
  .cta-section {
    padding-top: var(--sp-5);
    padding-bottom: var(--sp-6);
  }

  .cta-card {
    padding: var(--sp-4);
  }

  .cta-card h2 {
    font-size: clamp(1.58rem, 2.5vw + 1.14rem, 1.9rem);
  }
}

/* ===== FAQ ===== */

.faq {
  max-width: 720px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}

.accordion-item {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  overflow: hidden;
  transition:
    transform var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.accordion-trigger {
  width: 100%;
  min-height: 52px;
  padding: 14px 20px;
  text-align: left;
  font-size: var(--text-sm);
  font-weight: 500;
  line-height: 1.4;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.accordion-trigger::after {
  content: "";
  width: 10px;
  height: 10px;
  flex: 0 0 10px;
  border-right: 2px solid color-mix(in srgb, var(--text) 60%, transparent);
  border-bottom: 2px solid color-mix(in srgb, var(--text) 60%, transparent);
  transform: rotate(45deg);
  transition: transform 0.24s ease, opacity 0.24s ease;
  opacity: 0.75;
}

.accordion-item.is-open .accordion-trigger::after {
  transform: rotate(225deg);
  opacity: 0.95;
}

.accordion-item:hover {
  border-color: color-mix(in srgb, var(--color-primary) 24%, var(--border-subtle));
  box-shadow: var(--shadow-sm);
}

.accordion-content {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.28s ease;
}

.accordion-item.is-open .accordion-content {
  /* max-height управляется JS, здесь только вертикальный отступ */
  padding-bottom: 14px;
}

.accordion-content p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--text-secondary);
}

@media (max-width: 768px) {
  .faq {
    gap: 10px;
  }

  .accordion-trigger {
    min-height: 56px;
    padding: 16px;
    font-size: 0.94rem;
  }

  .accordion-content {
    padding: 0 16px;
  }

  .accordion-item.is-open .accordion-content {
    padding-bottom: 16px;
  }
}

@media (max-width: 390px) {
  .container {
    padding-inline: 16px;
  }

  .section {
    padding-block: 40px;
  }

  .section + .section {
    padding-top: 40px;
  }

  .section-header {
    margin-bottom: 20px;
  }

  .section-title {
    font-size: clamp(1.56rem, 4.6vw + 0.96rem, 1.86rem);
  }

  .section-subtitle {
    max-width: 38ch;
    font-size: 0.97rem;
  }

  .hero__grid {
    gap: 24px;
  }

  .hero__mascot {
    max-width: 220px;
  }

  .hero__title {
    font-size: clamp(1.82rem, 6.8vw + 0.78rem, 2.18rem);
    margin: 8px 0 16px;
  }

  .hero__subtitle {
    font-size: 1rem;
    max-width: 36ch;
  }

  .hero__cta {
    margin-top: 24px;
  }

  .hero__trust-row {
    margin-top: 12px;
  }

  .card {
    padding: 16px;
  }

  .how-step {
    padding: 16px 16px 16px 62px;
  }

  .how-step::before {
    left: 14px;
    top: 15px;
    width: 34px;
    height: 34px;
  }

  .zero-card {
    padding: 24px 16px;
    border-radius: 24px;
  }

  .zero-card__mascot {
    max-width: 200px;
  }

  .platform-grid {
    gap: 12px;
  }

  .platform-card {
    min-height: 112px;
    padding: 14px;
    gap: 6px;
  }

  .cta-card {
    padding: 24px 16px;
    border-radius: 24px;
  }

  .cta-card h2 {
    font-size: clamp(1.42rem, 4vw + 0.98rem, 1.72rem);
  }

  .accordion-trigger {
    min-height: 52px;
    padding: 14px;
    font-size: 0.9rem;
  }

  .accordion-content {
    padding: 0 14px;
  }

  .accordion-item.is-open .accordion-content {
    padding-bottom: 14px;
  }
}

@media (max-width: 360px) {
  .hero__mascot {
    max-width: 198px;
  }

  .hero__title {
    font-size: clamp(1.72rem, 7.2vw + 0.7rem, 2.02rem);
  }

  .btn--large {
    min-height: 48px;
    font-size: 1rem;
  }

  .platform-card {
    min-height: 104px;
    padding: 12px;
  }

  .accordion-trigger {
    min-height: 50px;
    padding: 12px 14px;
  }
}

/* ===== FOOTER ===== */

.footer {
  padding-block: var(--sp-5);
  border-top: 1px solid var(--border-subtle);
}

.footer__grid {
  display: flex;
  justify-content: space-between;
  gap: var(--sp-4);
  align-items: center;
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.footer__links {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

@media (max-width: 640px) {
  .footer__grid {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ===== UTILITIES ===== */

.fade-item {
  opacity: 0;
  transform: translateY(10px);
  transition:
    opacity 0.35s ease,
    transform 0.35s ease;
}

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}