@layer reset, tokens, base, layout, cube, ui, cards, reveal, theme, responsive;

@layer reset {
  *,
  *::before,
  *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
}

@layer tokens {
  :root {
    color-scheme: dark;
    --bg: #07131d;
    --bg-elevated: rgba(8, 26, 40, 0.68);
    --bg-soft: rgba(255, 255, 255, 0.07);
    --fg: #eff7fb;
    --muted: #8da7b6;
    --line: rgba(164, 219, 255, 0.14);
    --accent: #72e3d2;
    --accent-strong: #ff866e;
    --accent-soft: #8fd4ff;
    --sand: #f2e5cf;
    --shadow: 0 24px 90px rgba(0, 0, 0, 0.28);
    --font-display: "Sora", sans-serif;
    --font-body: "Manrope", system-ui, sans-serif;
    --hairline: 1px;
    --ui-inset: 2rem;
    --reveal-offset: 0.875rem;
    --reveal-duration: 0.6s;
    --z-ui: 10;
  }

  :root[data-theme="light"] {
    color-scheme: light;
    --bg: #eef5f6;
    --bg-elevated: rgba(255, 255, 255, 0.62);
    --bg-soft: rgba(8, 26, 40, 0.06);
    --fg: #0e2231;
    --muted: #5f7887;
    --line: rgba(14, 34, 49, 0.12);
    --accent: #009fa6;
    --accent-strong: #ff6f5f;
    --accent-soft: #4db5ff;
    --sand: #fbf4e7;
    --shadow: 0 24px 80px rgba(59, 95, 115, 0.14);
  }
}

@layer base {
  html {
    scroll-behavior: auto;
  }

  body {
    min-height: 100vh;
    background:
      radial-gradient(circle at 18% 18%, rgba(77, 181, 255, 0.18), transparent 28%),
      radial-gradient(circle at 82% 12%, rgba(114, 227, 210, 0.18), transparent 25%),
      linear-gradient(180deg, #08121d 0%, #07131d 36%, #061a27 100%);
    color: var(--fg);
    font-family: var(--font-body);
    overflow-x: hidden;
    transition: background 0.3s ease, color 0.3s ease;
  }

  :root[data-theme="light"] body {
    background:
      radial-gradient(circle at 18% 18%, rgba(77, 181, 255, 0.18), transparent 28%),
      radial-gradient(circle at 82% 12%, rgba(255, 111, 95, 0.12), transparent 25%),
      linear-gradient(180deg, #f5fbfb 0%, #eef5f6 40%, #e5eff1 100%);
  }

  a,
  button {
    -webkit-tap-highlight-color: transparent;
  }
}

@layer layout {
  .page-shell {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
  }

  .ambient {
    position: absolute;
    border-radius: 999px;
    filter: blur(40px);
    opacity: 0.45;
    mix-blend-mode: screen;
  }

  .ambient-a {
    inset: 6% auto auto 8%;
    width: min(30rem, 42vw);
    height: min(30rem, 42vw);
    background: radial-gradient(circle, rgba(114, 227, 210, 0.56), transparent 68%);
    animation: floatA 16s ease-in-out infinite;
  }

  .ambient-b {
    inset: auto 0 10% auto;
    width: min(34rem, 48vw);
    height: min(34rem, 48vw);
    background: radial-gradient(circle, rgba(255, 134, 110, 0.36), transparent 70%);
    animation: floatB 18s ease-in-out infinite;
  }

  .grid-glow {
    position: absolute;
    inset: 0;
    background:
      linear-gradient(var(--line) 1px, transparent 1px),
      linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 6rem 6rem;
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 95%);
    opacity: 0.32;
  }

  #scene {
    position: fixed;
    inset: 0;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    perspective: 1300px;
    pointer-events: none;
  }

  #scroll_container {
    position: relative;
    z-index: 2;
  }

  section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: clamp(4.25rem, 8vh, 6rem) calc(5rem + var(--ui-inset)) clamp(4.25rem, 8vh, 6rem) 5rem;
  }
}

@layer cube {
  #cube {
    --s: min(76vw, 76vh, 33rem);
    width: var(--s);
    height: var(--s);
    position: relative;
    transform-style: preserve-3d;
    transform: rotateX(90deg) rotateY(0deg);
    will-change: transform;
    filter: drop-shadow(0 30px 70px rgba(0, 0, 0, 0.28));
  }

  #cube::before,
  #cube::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    pointer-events: none;
    transform-style: preserve-3d;
  }

  #cube::before {
    width: 76%;
    height: 76%;
    transform: translate3d(-50%, -50%, calc(var(--s) * -0.2)) rotateX(90deg);
    background: radial-gradient(circle, rgba(114, 227, 210, 0.16), rgba(7, 19, 29, 0) 68%);
    filter: blur(20px);
  }

  #cube::after {
    width: 88%;
    height: 88%;
    border-radius: 2.2rem;
    transform: translate3d(-50%, -50%, calc(var(--s) * -0.06));
    border: 1px solid rgba(255, 255, 255, 0.04);
    box-shadow:
      0 40px 120px rgba(0, 0, 0, 0.32),
      inset 0 1px 0 rgba(255, 255, 255, 0.04);
  }

  .face {
    position: absolute;
    inset: 0;
    transform-style: preserve-3d;
    border: 1px solid rgba(255, 255, 255, 0.08);
    overflow: hidden;
    background-color: #08131d;
    background:
      radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.24), transparent 22%),
      radial-gradient(circle at 80% 18%, rgba(255, 134, 110, 0.22), transparent 22%),
      linear-gradient(135deg, rgba(114, 227, 210, 0.22), rgba(77, 181, 255, 0.08) 45%, rgba(6, 26, 39, 0.24));
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(10px);
  }

  .face::before,
  .face::after {
    content: "";
    position: absolute;
    inset: 0;
  }

  .face::before {
    background:
      linear-gradient(180deg, rgba(7, 19, 29, 0.18), rgba(7, 19, 29, 0.66)),
      radial-gradient(circle at 50% 50%, transparent 0 34%, rgba(255, 255, 255, 0.14) 34.5% 35.5%, transparent 36%),
      radial-gradient(circle at 50% 50%, transparent 0 58%, rgba(255, 255, 255, 0.08) 58.5% 59.5%, transparent 60%);
    opacity: 0.92;
  }

  .face::after {
    inset: 8%;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 1.5rem;
    opacity: 0.8;
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, 0.2),
      inset 0 -10px 24px rgba(0, 0, 0, 0.18);
  }

  .face-top {
    transform: rotateX(90deg) translateZ(calc(var(--s) / 2));
    background:
      linear-gradient(135deg, rgba(114, 227, 210, 0.3), rgba(0, 0, 0, 0.08)),
      radial-gradient(circle at 30% 30%, rgba(242, 229, 207, 0.45), transparent 18%),
      linear-gradient(180deg, #0c3344, #0a1d2b);
  }

  .face-front {
    transform: translateZ(calc(var(--s) / 2));
    background:
      repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.06) 0 1px, transparent 1px 5rem),
      linear-gradient(145deg, rgba(255, 134, 110, 0.22), rgba(77, 181, 255, 0.08)),
      linear-gradient(180deg, #0d2434, #081823);
  }

  .face-right {
    transform: rotateY(90deg) translateZ(calc(var(--s) / 2));
    background:
      radial-gradient(circle at 70% 30%, rgba(255, 134, 110, 0.24), transparent 22%),
      radial-gradient(circle at 35% 70%, rgba(114, 227, 210, 0.24), transparent 24%),
      linear-gradient(180deg, #0b2431, #0a1822);
  }

  .face-back {
    transform: rotateY(180deg) translateZ(calc(var(--s) / 2));
    background:
      linear-gradient(180deg, rgba(255, 255, 255, 0.05), transparent),
      linear-gradient(135deg, rgba(114, 227, 210, 0.32), rgba(77, 181, 255, 0.08) 45%, rgba(255, 134, 110, 0.18)),
      linear-gradient(180deg, #123a4a, #091b26);
  }

  .face-left {
    transform: rotateY(-90deg) translateZ(calc(var(--s) / 2));
    background:
      radial-gradient(circle at 22% 22%, rgba(255, 255, 255, 0.16), transparent 16%),
      linear-gradient(135deg, rgba(77, 181, 255, 0.22), rgba(114, 227, 210, 0.12) 50%, rgba(8, 26, 40, 0.16)),
      linear-gradient(180deg, #082233, #071722);
  }

  .face-bottom {
    transform: rotateX(-90deg) translateZ(calc(var(--s) / 2));
    background:
      radial-gradient(circle at 50% 50%, rgba(242, 229, 207, 0.16), transparent 24%),
      linear-gradient(135deg, rgba(255, 134, 110, 0.24), rgba(114, 227, 210, 0.08)),
      linear-gradient(180deg, #0e2635, #08131d);
  }

  :root[data-theme="light"] .face {
    border-color: rgba(14, 34, 49, 0.08);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.4);
  }

  :root[data-theme="light"] .face::before {
    opacity: 0.45;
  }

  :root[data-theme="light"] .face::after {
    border-color: rgba(14, 34, 49, 0.08);
  }

  .face-inner {
    position: absolute;
    inset: auto 1.5rem 1.5rem 1.5rem;
    z-index: 2;
    display: grid;
    gap: 0.35rem;
    padding: 1rem 1.1rem;
    border-radius: 1.25rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(12px);
    transform: translateZ(2.5rem);
    box-shadow:
      0 18px 30px rgba(0, 0, 0, 0.24),
      inset 0 1px 0 rgba(255, 255, 255, 0.16);
  }

  :root[data-theme="light"] .face-inner {
    background: rgba(255, 255, 255, 0.5);
    border-color: rgba(14, 34, 49, 0.08);
  }

  .face-kicker {
    font-size: 0.7rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--sand);
  }

  :root[data-theme="light"] .face-kicker {
    color: var(--accent);
  }

  .face-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 4vw, 2.9rem);
    line-height: 0.95;
    letter-spacing: 0.03em;
  }

  .face-meta {
    font-size: 0.85rem;
    line-height: 1.45;
    color: color-mix(in srgb, var(--fg) 78%, transparent);
  }

  .face-image {
    position: absolute;
    inset: 0;
    z-index: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    opacity: 0.96;
    filter: saturate(1.08) contrast(1.04);
    transform: translateZ(0.2rem) scale(1.03);
  }

  .face-image.is-missing {
    display: none;
  }

  .face.is-fallback {
    background:
      radial-gradient(circle at 24% 24%, rgba(255, 255, 255, 0.18), transparent 12%),
      radial-gradient(circle at 75% 26%, rgba(255, 134, 110, 0.24), transparent 18%),
      linear-gradient(135deg, rgba(114, 227, 210, 0.26), rgba(77, 181, 255, 0.14) 48%, rgba(8, 26, 40, 0.24)),
      linear-gradient(180deg, #0c3344, #08131d);
  }

  .face.is-fallback::before {
    background:
      linear-gradient(180deg, rgba(7, 19, 29, 0.12), rgba(7, 19, 29, 0.42)),
      repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.06) 0 1px, transparent 1px 4rem),
      repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.05) 0 1px, transparent 1px 4rem);
  }
}

@layer ui {
  #hud {
    position: fixed;
    top: var(--ui-inset);
    right: var(--ui-inset);
    z-index: var(--z-ui);
    display: grid;
    gap: 0.55rem;
    width: 7rem;
  }

  #hud_pct,
  .scene-label,
  #face_caption_num,
  .tag,
  .stat-label,
  .cta,
  .cta-back,
  .feature-list span,
  .mini-panel span {
    text-transform: uppercase;
    letter-spacing: 0.18em;
  }

  #hud_pct {
    font-size: 0.72rem;
    color: var(--accent);
    justify-self: end;
  }

  .progress-bar {
    width: 100%;
    height: 0.35rem;
    border-radius: 999px;
    background: var(--bg-soft);
    overflow: hidden;
    border: 1px solid var(--line);
  }

  .progress-fill {
    width: 0;
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--accent-strong));
  }

  .scene-label {
    font-size: 0.62rem;
    color: var(--muted);
    justify-self: end;
  }

  #scene_strip {
    position: fixed;
    top: 50%;
    left: var(--ui-inset);
    transform: translateY(-50%);
    z-index: var(--z-ui);
    display: grid;
    gap: 0.8rem;
  }

  #lang_toggle {
    position: fixed;
    top: var(--ui-inset);
    left: var(--ui-inset);
    z-index: var(--z-ui);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: var(--bg-elevated);
    backdrop-filter: blur(12px);
  }

  .lang-btn {
    border: none;
    background: transparent;
    color: var(--muted);
    font-family: var(--font-body);
    font-size: 0.68rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    padding: 0.55rem 0.8rem;
    border-radius: 999px;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease;
  }

  .lang-btn.active {
    background: linear-gradient(90deg, var(--accent), var(--sand));
    color: #04111b;
  }

  .scene-dot {
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    border: 1px solid var(--line);
    background: transparent;
    transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease;
  }

  .scene-dot.active {
    background: var(--accent);
    border-color: var(--accent);
    transform: scale(1.8);
  }

  #theme_toggle {
    position: fixed;
    bottom: var(--ui-inset);
    left: var(--ui-inset);
    z-index: var(--z-ui);
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 50%;
    border: 1px solid var(--line);
    background: var(--bg-elevated);
    color: var(--fg);
    display: grid;
    place-items: center;
    backdrop-filter: blur(12px);
    cursor: pointer;
  }

  #theme_toggle svg {
    position: absolute;
    width: 1rem;
    height: 1rem;
    transition: opacity 0.3s ease, transform 0.3s ease;
  }

  .icon-sun {
    opacity: 1;
    transform: rotate(0deg);
  }

  .icon-moon {
    opacity: 0;
    transform: rotate(90deg);
  }

  :root[data-theme="light"] .icon-sun {
    opacity: 0;
    transform: rotate(-90deg);
  }

  :root[data-theme="light"] .icon-moon {
    opacity: 1;
    transform: rotate(0deg);
  }

  #face_caption {
    position: fixed;
    bottom: var(--ui-inset);
    left: 50%;
    transform: translateX(-50%);
    z-index: var(--z-ui);
    text-align: center;
    pointer-events: none;
  }

  #face_caption_num {
    font-size: 0.62rem;
    color: var(--accent);
    margin-bottom: 0.15rem;
  }

  #face_caption_name {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 4vw, 3.25rem);
    line-height: 0.94;
    letter-spacing: 0.08em;
    color: color-mix(in srgb, var(--fg) 45%, transparent);
  }
}

@layer cards {
  .text-card {
    width: min(100%, 34rem);
    max-width: 34rem;
    max-height: calc(100vh - 7rem);
    overflow-y: auto;
    padding: clamp(1.35rem, 2.2vw, 2rem);
    background: var(--bg-elevated);
    border: 1px solid var(--line);
    border-radius: 1.75rem;
    backdrop-filter: blur(18px) saturate(135%);
    box-shadow: var(--shadow);
    scrollbar-width: thin;
    scrollbar-color: color-mix(in srgb, var(--accent) 45%, transparent) transparent;
  }

  .hero-card {
    max-width: 38rem;
  }

  .intro-card {
    width: min(100%, 42rem);
    padding: 2.25rem;
    text-align: center;
  }

  .intro-shell {
    display: grid;
    gap: 1.5rem;
    justify-items: center;
  }

  .intro-lead {
    max-width: 28rem;
    font-family: var(--font-display);
    font-size: clamp(1.3rem, 3vw, 2rem);
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: color-mix(in srgb, var(--fg) 92%, transparent);
  }

  .intro-cta-stack {
    display: grid;
    gap: 1rem;
    justify-items: center;
    width: 100%;
  }

  .cta-large {
    min-width: min(100%, 17rem);
    justify-content: center;
    padding-inline: 1.6rem;
  }

  .waitlist-form {
    display: grid;
    gap: 0.7rem;
    justify-items: stretch;
    width: min(100%, 33rem);
  }

  .waitlist-label {
    color: var(--accent);
    font-size: 0.66rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
  }

  .waitlist-fields {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.7rem;
    align-items: stretch;
  }

  .waitlist-input {
    width: 100%;
    min-height: 3.25rem;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--bg-soft);
    color: var(--fg);
    font: 700 0.92rem var(--font-body);
    outline: none;
    padding: 0 1.2rem;
    transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
  }

  .waitlist-input::placeholder {
    color: var(--muted);
  }

  .waitlist-input:focus {
    border-color: color-mix(in srgb, var(--accent) 70%, transparent);
    background: color-mix(in srgb, var(--bg-soft) 80%, var(--accent) 8%);
    box-shadow: 0 0 0 0.2rem color-mix(in srgb, var(--accent) 15%, transparent);
  }

  .waitlist-submit.cta-large {
    min-width: 10.5rem;
    border: 0;
    cursor: pointer;
  }

  .waitlist-form.is-loading .waitlist-submit {
    opacity: 0.72;
    pointer-events: none;
  }

  .waitlist-status {
    min-height: 1.15rem;
    color: var(--muted);
    font-size: 0.74rem;
    font-weight: 700;
  }

  .waitlist-status[data-tone="success"] {
    color: var(--accent);
  }

  .waitlist-status[data-tone="loading"] {
    color: var(--sand);
  }

  .waitlist-status[data-tone="error"] {
    color: var(--accent-strong);
  }

  .waitlist-note {
    color: var(--muted);
    font-size: 0.72rem;
    font-weight: 700;
  }

  .intro-scroll-link {
    display: inline-grid;
    gap: 0.3rem;
    justify-items: center;
    text-decoration: none;
    color: var(--muted);
    font-size: 0.68rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    transition: color 0.2s ease, transform 0.2s ease;
  }

  .intro-scroll-link:hover {
    color: var(--fg);
    transform: translateY(2px);
  }

  .intro-arrow {
    font-size: 1.3rem;
    color: var(--accent);
    animation: introArrowFloat 1.8s ease-in-out infinite;
  }

  .about-panel {
    display: grid;
    gap: 0.75rem;
    width: min(100%, 31rem);
    padding: 1.3rem 1.4rem;
    border-radius: 1.35rem;
    border: 1px solid var(--line);
    background:
      linear-gradient(135deg, rgba(114, 227, 210, 0.08), rgba(255, 134, 110, 0.08)),
      var(--bg-soft);
    text-align: center;
  }

  .about-label {
    font-size: 0.66rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.2em;
  }

  .intro-about {
    margin-top: 0;
    font-size: 0.96rem;
  }

  .text-card.right {
    margin-left: auto;
    text-align: right;
  }

  .text-card.center {
    margin-inline: auto;
    max-width: 38rem;
    text-align: center;
  }

  .tag {
    display: inline-block;
    font-size: 0.68rem;
    color: var(--accent);
    margin-bottom: 0.9rem;
  }

  h1,
  h2 {
    font-family: var(--font-display);
    font-weight: 800;
    line-height: 1.02;
    letter-spacing: -0.03em;
  }

  h1 {
    font-size: clamp(3rem, 7vw, 5.6rem);
  }

  h2 {
    font-size: clamp(2.15rem, 4.4vw, 3.45rem);
  }

  .body-text {
    margin-top: 0.95rem;
    font-size: 0.98rem;
    line-height: 1.58;
    color: color-mix(in srgb, var(--fg) 74%, transparent);
  }

  .h-line {
    width: 3.5rem;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent-strong));
    margin-bottom: 0.9rem;
    border-radius: 999px;
  }

  .text-card.right .h-line {
    margin-left: auto;
  }

  .text-card.center .h-line {
    margin-inline: auto;
  }

  .stat-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.25rem;
  }

  .stat-row.compact .stat {
    min-width: 7.5rem;
  }

  .stat {
    display: grid;
    gap: 0.35rem;
    min-width: 7.5rem;
    padding: 0.78rem 0.86rem;
    border-radius: 1.15rem;
    background: var(--bg-soft);
    border: 1px solid var(--line);
  }

  .stat-num {
    font-family: var(--font-display);
    font-size: 1.45rem;
    line-height: 1;
    color: var(--sand);
  }

  :root[data-theme="light"] .stat-num {
    color: var(--accent);
  }

  .stat-label {
    font-size: 0.6rem;
    color: var(--muted);
    line-height: 1.38;
  }

  .cta-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.8rem;
    margin-top: 1.25rem;
  }

  .text-card.right .cta-row {
    justify-content: flex-end;
  }

  .text-card.center .cta-row {
    justify-content: center;
  }

  .cta,
  .cta-back {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.9rem 1.2rem;
    border-radius: 999px;
    text-decoration: none;
    font-size: 0.68rem;
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
  }

  .cta {
    color: #04111b;
    background: linear-gradient(90deg, var(--accent), var(--sand));
    border: 1px solid transparent;
  }

  .cta:hover {
    transform: translateY(-1px);
  }

  .cta-back {
    color: var(--fg);
    border: 1px solid var(--line);
    background: transparent;
  }

  .cta-back:hover {
    background: var(--bg-soft);
  }

  .cta svg,
  .cta-back svg {
    width: 0.75rem;
    height: 0.75rem;
  }

  .feature-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    margin-top: 1.15rem;
  }

  .feature-list span {
    padding: 0.68rem 0.82rem;
    border-radius: 999px;
    background: var(--bg-soft);
    border: 1px solid var(--line);
    font-size: 0.62rem;
    color: var(--fg);
  }

  .vision-list {
    justify-content: flex-end;
  }

  .feature-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.75rem;
    margin-top: 1.15rem;
  }

  .mini-panel {
    display: grid;
    gap: 0.45rem;
    padding: 0.86rem;
    border-radius: 1.15rem;
    background: var(--bg-soft);
    border: 1px solid var(--line);
    text-align: left;
  }

  .mini-panel strong {
    font-family: var(--font-display);
    font-size: 1.05rem;
    color: var(--sand);
    letter-spacing: 0.02em;
  }

  :root[data-theme="light"] .mini-panel strong {
    color: var(--accent);
  }

  .mini-panel span {
    font-size: 0.58rem;
    color: var(--muted);
    line-height: 1.6;
  }

  .quote-block {
    margin-top: 1.2rem;
    padding: 1.1rem;
    border-radius: 1.25rem;
    border: 1px solid var(--line);
    background:
      linear-gradient(135deg, rgba(114, 227, 210, 0.12), rgba(255, 134, 110, 0.1)),
      var(--bg-soft);
  }

  .quote-block p {
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 2.5vw, 1.65rem);
    line-height: 1.08;
    letter-spacing: -0.02em;
  }

}

@layer reveal {
  .tag,
  h1,
  h2,
  .intro-lead,
  .body-text,
  .stat-row,
  .cta,
  .cta-back,
  .intro-scroll-link,
  .about-panel,
  .waitlist-form,
  .feature-list,
  .feature-grid,
  .quote-block,
  .h-line {
    opacity: 0;
    transform: translateY(var(--reveal-offset));
  }

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

  .h-line.visible {
    opacity: 1;
    transform: scaleX(1);
  }

  .tag {
    transition: opacity var(--reveal-duration) ease, transform var(--reveal-duration) ease;
  }

  h1,
  h2 {
    transition: opacity var(--reveal-duration) ease 0.08s, transform var(--reveal-duration) ease 0.08s;
  }

  .intro-lead {
    transition: opacity var(--reveal-duration) ease 0.12s, transform var(--reveal-duration) ease 0.12s;
  }

  .body-text {
    transition: opacity var(--reveal-duration) ease 0.16s, transform var(--reveal-duration) ease 0.16s;
  }

  .intro-scroll-link,
  .about-panel,
  .waitlist-form,
  .stat-row,
  .feature-list,
  .feature-grid,
  .quote-block {
    transition: opacity var(--reveal-duration) ease 0.24s, transform var(--reveal-duration) ease 0.24s;
  }

  .cta,
  .cta-back {
    transition:
      opacity var(--reveal-duration) ease 0.32s,
      transform var(--reveal-duration) ease 0.32s,
      background 0.2s ease,
      color 0.2s ease,
      border-color 0.2s ease,
      transform 0.2s ease;
  }

  .h-line {
    transform: scaleX(0);
    transform-origin: left;
    transition: opacity 0.45s ease, transform 0.45s ease;
  }

  .text-card.right .h-line {
    transform-origin: right;
  }

  .text-card.center .h-line {
    transform-origin: center;
  }
}

@layer theme {
  :root[data-theme="light"] #face_caption_name {
    color: color-mix(in srgb, var(--fg) 38%, transparent);
  }
}

@layer responsive {
  @media (width <= 64rem) {
    .feature-grid {
      grid-template-columns: 1fr;
    }
  }

  @media (width <= 56.25rem), (pointer: coarse) {
    html {
      scroll-snap-type: y proximity;
    }

    html.is-native-anchor-scrolling {
      scroll-snap-type: none;
    }

    body {
      overscroll-behavior-y: contain;
      touch-action: pan-y;
    }

    section {
      scroll-snap-align: center;
      scroll-snap-stop: normal;
    }

    .ambient {
      filter: blur(28px);
      opacity: 0.34;
    }

    #cube {
      filter: drop-shadow(0 18px 38px rgba(0, 0, 0, 0.24));
    }

    #cube::before {
      filter: blur(10px);
    }

    #cube::after {
      box-shadow:
        0 22px 64px rgba(0, 0, 0, 0.24),
        inset 0 1px 0 rgba(255, 255, 255, 0.04);
    }

    .face,
    .face-inner,
    #lang_toggle,
    #theme_toggle,
    .text-card {
      backdrop-filter: none;
    }

    .text-card {
      background: rgba(8, 26, 40, 0.78);
      -webkit-overflow-scrolling: touch;
      overscroll-behavior: contain;
    }

    .face::after {
      box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.14),
        inset 0 -6px 16px rgba(0, 0, 0, 0.14);
    }

    .face-image {
      filter: saturate(1.02) contrast(1.02);
      transform: translateZ(0.12rem) scale(1.015);
    }
  }

  @media (width <= 56.25rem) {
    #hud {
      top: 1rem;
      right: 1rem;
    }

    #scene_strip {
      display: none;
    }

    #lang_toggle {
      top: 1rem;
      left: 1rem;
    }

    #theme_toggle {
      bottom: 1rem;
      left: 1rem;
    }

    #face_caption {
      bottom: 1rem;
    }

    #face_caption_name {
      font-size: clamp(1.35rem, 9vw, 2.3rem);
    }

    section {
      min-height: 115vh;
      align-items: center;
      padding: 5.25rem 1.25rem 5.5rem;
    }

    #s0,
    #s1 {
      min-height: 100vh;
      align-items: center;
      padding: 5rem 1.25rem 5.5rem;
    }

    .text-card,
    .hero-card {
      max-width: 100%;
      max-height: calc(100svh - 7rem);
      padding: 1.2rem;
      border-radius: 1.4rem;
    }

    .intro-card {
      padding: 1.5rem;
    }

    .intro-shell {
      gap: 1.25rem;
    }

    .about-panel {
      padding: 1.1rem;
    }


    .body-text {
      font-size: 0.9rem;
      line-height: 1.48;
    }

    .stat-row {
      gap: 0.75rem;
    }

    .stat {
      min-width: calc(50% - 0.4rem);
      padding: 0.7rem 0.75rem;
    }

    .stat-num {
      font-size: 1.25rem;
    }

    .feature-list {
      gap: 0.5rem;
    }

    .vision-list,
    .text-card.right .cta-row {
      justify-content: flex-start;
    }

    .text-card.right {
      text-align: left;
    }

    .text-card.right .h-line {
      margin-left: 0;
    }

    #cube {
      --s: min(82vw, 52vh, 25rem);
      transform-origin: center center;
    }

    .face-inner {
      inset: auto 1rem 1rem 1rem;
      padding: 0.85rem 0.95rem;
    }
  }

  @media (width <= 40rem) {
    h1 {
      font-size: clamp(2.3rem, 13vw, 3.55rem);
    }

    h2 {
      font-size: clamp(1.75rem, 8.5vw, 2.6rem);
    }

    .stat {
      min-width: 100%;
    }

    .tag,
    .feature-list span,
    .stat-label,
    .cta,
    .cta-back {
      overflow-wrap: anywhere;
    }

    .waitlist-fields {
      grid-template-columns: 1fr;
    }

    .waitlist-submit.cta-large {
      width: 100%;
    }

    #cube {
      --s: min(84vw, 46vh, 21rem);
    }
  }
}

@keyframes introArrowFloat {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(0.35rem);
  }
}

@keyframes floatA {
  0%,
  100% {
    transform: translate3d(0, 0, 0);
  }
  50% {
    transform: translate3d(2rem, -1rem, 0);
  }
}

@keyframes floatB {
  0%,
  100% {
    transform: translate3d(0, 0, 0);
  }
  50% {
    transform: translate3d(-1.5rem, 1.25rem, 0);
  }
}