@font-face {
  font-family: "VT323";
  src: url("./vt323.ttf?v=3") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  --oxblood: #6b1f12;
  --amber: #ffbf3c;
  --cream: #f3e6d2;
  --desk: #1a0c08;
  --paper: #efe4d4;
  --ink: #24140c;
  --pixel: VT323, "Cascadia Mono", monospace;
  --page-pad: clamp(18px, 4vw, 56px);
  --content-wide: 76rem;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

html,
body {
  margin: 0;
  background: var(--desk);
  color: var(--cream);
  font-family: "Segoe UI", "Noto Sans", sans-serif;
}

body {
  min-height: 100vh;
  padding: 28px var(--page-pad) 72px;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgb(107 31 18 / 35%), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 20%, rgb(255 191 60 / 6%), transparent 50%),
    var(--desk);
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: var(--content-wide);
  margin: 0 auto 40px;
}

.mark {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--amber);
  text-decoration: none;
  font-family: var(--pixel);
  font-size: clamp(28px, 4vw, 38px);
  letter-spacing: 0.08em;
}

.lang select {
  background: var(--oxblood);
  color: var(--cream);
  border: 2px solid #3a120c;
  padding: 8px 12px;
  font: inherit;
  cursor: pointer;
}

.page {
  max-width: var(--content-wide);
  margin: 0 auto;
}

/* —— Hero —— */

.hero {
  margin-bottom: clamp(40px, 6vw, 72px);
}

.hero__copy {
  margin-bottom: clamp(24px, 4vw, 0);
}

h1 {
  margin: 0 0 18px;
  font-family: var(--pixel);
  font-size: clamp(40px, 7vw, 88px);
  line-height: 0.95;
  color: var(--amber);
  font-weight: 400;
  max-width: 20ch;
  text-shadow: 0 0 40px rgb(255 191 60 / 20%);
}

.lead,
.prose-block p,
.site-footer p {
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.5;
  max-width: 42rem;
  margin: 0;
}

.lead {
  opacity: 0.92;
}

.hero__wall {
  margin: 0;
}

.wall {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 6px solid var(--oxblood);
  box-shadow:
    0 0 0 1px #3a120c,
    0 18px 0 #110604,
    0 0 60px rgb(255 191 60 / 8%);
  overflow: hidden;
  border-radius: 2px;
}

@media (min-width: 640px) {
  .wall {
    grid-template-columns: repeat(6, 1fr);
  }
}

@media (min-width: 900px) {
  .hero {
    display: grid;
    grid-template-columns: minmax(260px, 0.95fr) minmax(320px, 1.25fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: center;
  }

  h1 {
    max-width: 14ch;
    font-size: clamp(52px, 4.5vw, 80px);
  }

  .hero__copy {
    margin-bottom: 0;
  }

  .wall {
    grid-template-columns: repeat(8, 1fr);
  }
}

.mini {
  aspect-ratio: 11 / 17;
  padding: 7% 8% 8%;
  display: flex;
  flex-direction: column;
  gap: 6%;
  background:
    linear-gradient(180deg, var(--hi), var(--body) 40%, var(--lo));
}

.mini-lcd {
  flex: 0 0 22%;
  background: var(--lcd);
  box-shadow: inset 0 0 0 2px var(--frame);
  color: var(--pixel);
  font-family: var(--pixel);
  font-size: clamp(9px, 2.2vw, 20px);
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  padding: 4%;
}

@media (min-width: 900px) {
  .mini-lcd {
    font-size: clamp(10px, 0.85vw, 18px);
  }
}

.mini-pad {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 5%;
}

.mini-pad i {
  display: block;
  background: linear-gradient(var(--key-hi), var(--key));
  border-radius: 12%;
  box-shadow: 0 1px 0 #111;
}

.mini-pad i:nth-child(4n) {
  background: linear-gradient(var(--op-hi), var(--op));
}

.mini-pad i:nth-child(16) {
  background: linear-gradient(var(--ab-hi), var(--ab));
}

/* —— Feature prose —— */

.features {
  margin-bottom: clamp(32px, 5vw, 56px);
}

.prose-block {
  margin-bottom: clamp(28px, 4vw, 40px);
}

.prose-block h2,
.sound-spotlight h2,
.launch-heading {
  margin: 0 0 12px;
  font-family: var(--pixel);
  font-size: clamp(30px, 4vw, 40px);
  color: var(--amber);
  font-weight: 400;
  letter-spacing: 0.04em;
}

.prose-block p {
  opacity: 0.9;
}

@media (min-width: 960px) {
  .features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px 56px;
    align-items: start;
  }

  .features .prose-block {
    margin-bottom: 0;
    padding: 24px 28px;
    background: rgb(107 31 18 / 18%);
    border: 2px solid rgb(107 31 18 / 80%);
    box-shadow: 0 4px 0 #110604;
  }
}

.settings-spotlight {
  margin-bottom: clamp(40px, 6vw, 64px);
  padding: clamp(20px, 3vw, 32px);
  background: rgb(17 6 4 / 50%);
  border: 2px solid #3a120c;
  box-shadow: 0 8px 0 #110604;
}

.settings-spotlight p {
  max-width: 52rem;
}

/* —— Sound spotlight —— */

.sound-spotlight {
  margin-bottom: clamp(40px, 6vw, 64px);
}

.sound-spotlight h2 {
  font-size: clamp(34px, 4.5vw, 52px);
  margin-bottom: 20px;
  text-shadow: 0 0 24px rgb(255 191 60 / 35%);
}

.sound-stage {
  padding: clamp(20px, 3vw, 36px);
  background:
    linear-gradient(145deg, rgb(107 31 18 / 55%), rgb(26 12 8 / 95%)),
    repeating-linear-gradient(
      90deg,
      rgb(255 191 60 / 4%) 0,
      rgb(255 191 60 / 4%) 1px,
      transparent 1px,
      transparent 12px
    );
  border: 3px solid var(--oxblood);
  box-shadow:
    0 0 0 1px #3a120c,
    0 12px 0 #110604,
    0 0 48px rgb(255 191 60 / 12%);
}

.demo-panel {
  margin: 8px 0 20px;
}

.demo-hint {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.4;
  opacity: 0.85;
  text-align: center;
}

.demo-calc {
  width: min(100%, 280px);
  margin: 0 auto;
  padding: 12px 12px 14px;
  border: 4px solid #111;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--hi), var(--body) 42%, var(--lo));
  box-shadow: 0 10px 0 #110604, 0 0 32px rgb(0 0 0 / 35%);
}

.demo-calc__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.demo-theme {
  width: 32px;
  height: 28px;
  padding: 0;
  border: 2px solid #111;
  background: linear-gradient(var(--key-hi), var(--key));
  color: var(--pixel);
  font-size: 16px;
  cursor: pointer;
}

.demo-brand {
  font-family: var(--pixel);
  font-size: 22px;
  letter-spacing: 0.2em;
  color: var(--pixel);
}

.demo-lcd {
  min-height: 52px;
  margin-bottom: 10px;
  padding: 8px 10px;
  background: var(--lcd);
  box-shadow: inset 0 0 0 2px var(--frame);
  color: var(--pixel);
  font-family: var(--pixel);
  font-size: clamp(28px, 6vw, 36px);
  line-height: 1;
  text-align: right;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.demo-pad {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.demo-pad button {
  min-height: 42px;
  border: 2px solid #111;
  border-radius: 6px;
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
  color: #111;
  background: linear-gradient(var(--key-hi), var(--key));
  box-shadow: 0 3px 0 #111;
}

.demo-pad button:active {
  transform: translateY(2px);
  box-shadow: 0 1px 0 #111;
}

.demo-pad button.op {
  background: linear-gradient(var(--op-hi), var(--op));
  color: #fff;
}

.demo-pad button.ab {
  background: linear-gradient(var(--ab-hi), var(--ab));
  color: #fff;
}

.demo-pad button.func {
  font-size: 15px;
  background: linear-gradient(var(--func-hi, var(--key-hi)), var(--func, var(--key)));
}

@media (min-width: 900px) {
  .sound-stage {
    display: grid;
    grid-template-columns: 1fr minmax(200px, 260px);
    gap: 20px 28px;
    align-items: start;
  }

  .sound-duo {
    grid-column: 1;
    margin-bottom: 0;
  }

  .freq-ribbon {
    grid-column: 1;
    margin-bottom: 0;
  }

  .sound-story {
    grid-column: 1;
    margin-bottom: 0;
  }

  .demo-panel {
    grid-column: 2;
    grid-row: 1 / span 3;
    margin: 0;
    position: sticky;
    top: 20px;
  }

  .demo-calc {
    width: 100%;
  }
}

.sound-duo {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}

.sound-card {
  position: relative;
  padding: 16px 14px 12px;
  border: 2px solid #3a120c;
  background: rgb(17 6 4 / 72%);
  overflow: hidden;
}

.sound-card--chip {
  box-shadow: inset 0 0 32px rgb(57 255 20 / 8%);
}

.sound-card--schumann {
  box-shadow: inset 0 0 32px rgb(255 191 60 / 10%);
}

.sound-card__label {
  margin: 0;
  font-family: var(--pixel);
  font-size: clamp(28px, 4vw, 38px);
  line-height: 1;
  color: var(--amber);
  letter-spacing: 0.06em;
}

.sound-card__hint {
  margin: 4px 0 10px;
  font-size: 15px;
  opacity: 0.82;
}

.sound-wave {
  height: 28px;
  border-radius: 2px;
  opacity: 0.9;
}

.sound-wave--chip {
  background: repeating-linear-gradient(
    90deg,
    #39ff14 0 8px,
    transparent 8px 12px,
    #0f380f 12px 16px,
    transparent 16px 20px
  );
  animation: chip-flicker 1.2s steps(4) infinite;
}

.sound-wave--schumann {
  background: linear-gradient(90deg, transparent, var(--amber), #ff6b00, var(--amber), transparent);
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 120 24'%3E%3Cpath fill='%23fff' d='M0 12 Q15 2 30 12 T60 12 T90 12 T120 12'/%3E%3C/svg%3E");
  mask-size: 120px 24px;
  mask-repeat: repeat-x;
  animation: schumann-drift 4s linear infinite;
}

@keyframes chip-flicker {
  0% { filter: brightness(1); }
  50% { filter: brightness(1.35); }
  100% { filter: brightness(1); }
}

@keyframes schumann-drift {
  from { background-position: 0 0; }
  to { background-position: 120px 0; }
}

.freq-ribbon {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
}

@media (min-width: 640px) {
  .freq-ribbon {
    gap: 10px;
  }
}

.freq-ribbon li {
  list-style: none;
}

.freq-btn {
  display: flex;
  align-items: baseline;
  gap: 3px;
  padding: 8px 12px;
  margin: 0;
  font: inherit;
  color: inherit;
  cursor: pointer;
  background: var(--oxblood);
  border: 2px solid #3a120c;
  box-shadow: 0 2px 0 #110604;
  transition: transform 0.08s ease, box-shadow 0.08s ease, background 0.12s ease;
}

.freq-btn:hover,
.freq-btn:focus-visible {
  background: #8a2a18;
  outline: none;
}

.freq-btn:active,
.freq-btn.is-playing {
  transform: translateY(2px);
  box-shadow: 0 0 0 #110604;
  background: #a83220;
}

.freq-val {
  font-family: var(--pixel);
  font-size: clamp(22px, 3vw, 28px);
  line-height: 1;
  color: var(--amber);
  letter-spacing: 0.02em;
}

.freq-unit {
  font-size: 13px;
  opacity: 0.75;
  text-transform: uppercase;
}

.sound-story {
  margin: 0;
}

.sound-story__quote {
  margin: 0;
  padding: clamp(18px, 3vw, 28px);
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.55;
  white-space: pre-line;
  font-weight: 400;
  color: var(--paper);
  background: rgb(0 0 0 / 28%);
  border: 2px solid rgb(255 191 60 / 35%);
  border-inline-start: 6px solid var(--amber);
  box-shadow: inset 0 0 40px rgb(255 191 60 / 6%);
  quotes: none;
}

.sound-story__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  font-family: var(--pixel);
  font-size: clamp(18px, 2vw, 22px);
  letter-spacing: 0.04em;
  color: var(--amber);
}

.sound-story__dot {
  opacity: 0.55;
  font-size: 14px;
}

@media (max-width: 560px) {
  .sound-duo {
    grid-template-columns: 1fr;
  }
}

/* —— Launch CTA (bottom) —— */

.launch--cta {
  margin-top: clamp(48px, 8vw, 80px);
  padding-top: clamp(32px, 5vw, 48px);
  border-top: 3px solid var(--oxblood);
}

.launch__inner {
  padding: clamp(24px, 4vw, 40px);
  background:
    linear-gradient(160deg, rgb(107 31 18 / 45%), rgb(26 12 8 / 90%));
  border: 3px solid var(--oxblood);
  box-shadow:
    0 0 0 1px #3a120c,
    0 14px 0 #110604;
}

.launch-heading {
  margin-bottom: 16px !important;
  font-size: clamp(36px, 5vw, 48px) !important;
}

.launch-title {
  display: inline-block;
  margin: 0 0 10px;
  padding: 8px 14px;
  font-family: var(--pixel);
  font-size: 20px;
  letter-spacing: 0.06em;
  color: var(--cream);
  background: var(--oxblood);
  border: 2px solid #3a120c;
  box-shadow: 0 3px 0 #110604;
}

.launch-price {
  margin: 0 0 20px;
  font-family: var(--pixel);
  font-size: clamp(24px, 3vw, 32px);
  letter-spacing: 0.04em;
  color: var(--amber);
  text-shadow: 0 0 20px rgb(255 191 60 / 30%);
}

.launch-roadmap {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px 20px;
  counter-reset: store-step;
  max-width: none;
  opacity: 0.92;
  font-size: clamp(17px, 1.8vw, 20px);
  line-height: 1.4;
}

.launch-roadmap li {
  margin: 0;
  padding: 12px 14px 12px 48px;
  position: relative;
  background: rgb(0 0 0 / 22%);
  border: 1px solid rgb(107 31 18 / 90%);
  counter-increment: store-step;
}

.launch-roadmap li::before {
  content: counter(store-step);
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--pixel);
  font-size: 18px;
  color: var(--amber);
  background: var(--oxblood);
  border: 2px solid #3a120c;
}

@media (min-width: 640px) {
  .launch-roadmap {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .launch-roadmap {
    grid-template-columns: repeat(3, 1fr);
  }

  .launch__inner {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    grid-template-rows: auto auto 1fr;
    gap: 8px 40px;
    align-items: start;
  }

  .launch-heading {
    grid-column: 1;
    grid-row: 1;
    margin-bottom: 0 !important;
  }

  .launch-title {
    grid-column: 1;
    grid-row: 2;
  }

  .launch-price {
    grid-column: 1;
    grid-row: 3;
    margin-bottom: 0;
    align-self: end;
  }

  .launch-roadmap {
    grid-column: 2;
    grid-row: 1 / span 3;
  }
}

/* —— Footer —— */

.site-footer {
  max-width: var(--content-wide);
  margin: 56px auto 0;
  padding-top: 32px;
  border-top: 1px solid rgb(107 31 18 / 60%);
  opacity: 0.75;
}

.footer-link,
.site-footer a {
  color: var(--amber);
  text-decoration: none;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  text-decoration: underline;
}

.contact a {
  margin-inline-start: 0.35em;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

[dir="rtl"] body {
  font-family: "Noto Naskh Arabic", "Segoe UI", sans-serif;
}

[dir="rtl"] .launch-roadmap li {
  padding: 12px 48px 12px 14px;
}

[dir="rtl"] .launch-roadmap li::before {
  left: auto;
  right: 12px;
}