:root {
  color-scheme: dark;
  --bg: #020306;
  --panel: #0b0e14;
  --panel-2: #111620;
  --ink: #f8f8f5;
  --muted: #a9afba;
  --dim: #6f7887;
  --line: rgba(255, 255, 255, 0.16);
  --line-soft: rgba(255, 255, 255, 0.08);
  --orange: #ff6a1a;
  --amber: #ffc45f;
  --blue: #3b9cff;
  --cyan: #62d9ff;
  --green: #34df9a;
  --radius: 18px;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 80% 7%, rgba(255, 106, 26, 0.18), transparent 30rem),
    radial-gradient(circle at 10% 20%, rgba(255, 106, 26, 0.12), transparent 24rem),
    linear-gradient(180deg, #020306 0%, #050403 45%, #020306 100%);
  color: var(--ink);
  letter-spacing: 0;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.026) 1px, transparent 1px);
  background-size: 112px 112px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.8), transparent 88%);
}

body::after {
  content: "";
  position: fixed;
  inset: auto auto -18rem -10rem;
  z-index: -1;
  width: 42rem;
  height: 42rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 119, 25, 0.42), transparent 68%);
  filter: blur(8px);
  pointer-events: none;
}

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

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

p,
h1,
h2,
h3,
dl {
  margin-top: 0;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  padding: 0 clamp(18px, 5vw, 96px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(2, 3, 6, 0.72);
  backdrop-filter: blur(24px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  font-weight: 900;
}

.brand img {
  border-radius: 9px;
}

nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 3vw, 38px);
  color: #c9ced7;
  font-size: 13px;
  font-weight: 800;
}

nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.nav-download {
  color: var(--amber);
}

.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(320px, 0.72fr) minmax(420px, 1fr);
  align-items: center;
  gap: clamp(32px, 6vw, 92px);
  padding: 120px clamp(18px, 6vw, 96px) 92px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 12% auto auto 48%;
  width: min(47vw, 680px);
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 28% 30%, #ffe275 0 16%, #ff9b28 38%, #ff5a1d 62%, rgba(255, 90, 29, 0.06) 72%);
  box-shadow: 0 0 140px rgba(255, 106, 26, 0.38);
}

.hero-copy,
.hero-stage,
.impact,
.section,
.download-section,
.site-footer {
  position: relative;
  z-index: 1;
}

.eyebrow,
.section-kicker {
  color: var(--amber);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow {
  margin-bottom: 22px;
}

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(54px, 6.8vw, 108px);
  line-height: 0.98;
  font-weight: 950;
  text-wrap: balance;
}

h1 span,
h1 strong {
  display: block;
}

h1 span {
  white-space: nowrap;
  font-size: clamp(52px, 5.8vw, 94px);
}

h1 strong {
  max-width: 700px;
  margin-top: 18px;
  color: #ffffff;
  font-size: clamp(30px, 3.65vw, 56px);
  line-height: 1.12;
  font-weight: 950;
}

.hero-subtitle {
  margin-bottom: 26px;
  color: #ffffff;
  font-size: clamp(22px, 3vw, 42px);
  font-weight: 850;
}

.lead {
  max-width: 660px;
  color: #d4d9e2;
  font-size: clamp(17px, 1.7vw, 23px);
  line-height: 1.78;
}

.hero-actions,
.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 15px;
  font-weight: 900;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    box-shadow 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button:focus-visible,
nav a:focus-visible,
.brand:focus-visible {
  outline: 3px solid rgba(255, 196, 95, 0.7);
  outline-offset: 4px;
}

.primary {
  border-color: #ffb156;
  background: linear-gradient(135deg, #ff7a1c, #ffc45f);
  color: #120903;
  box-shadow: 0 0 34px rgba(255, 106, 26, 0.34);
}

.ghost {
  background: rgba(255, 255, 255, 0.055);
  color: #ffffff;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: 620px;
  margin: 46px 0 0;
}

.hero-stats div {
  min-height: 112px;
  padding: 18px 18px 16px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.035);
}

.hero-stats dt,
.package-card dt {
  margin-bottom: 12px;
  color: var(--dim);
  font-size: 12px;
  font-weight: 800;
}

.hero-stats dd,
.package-card dd {
  margin: 0;
  color: #ffffff;
  font-size: clamp(20px, 2.2vw, 30px);
  font-weight: 950;
}

.hero-stage {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 760px;
}

.sun-disc {
  position: absolute;
  top: 58px;
  right: 6%;
  width: min(54vw, 520px);
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 28% 30%, rgba(255, 234, 140, 0.9) 0 12%, rgba(255, 182, 54, 0.95) 32%, rgba(255, 91, 29, 0.94) 58%, rgba(255, 91, 29, 0.1) 72%);
  filter: saturate(1.15);
  animation: sunBreath 9s ease-in-out infinite;
}

.hero-system {
  position: relative;
  width: min(100%, 720px);
  min-height: 690px;
  perspective: 1100px;
}

.hero-system::before {
  content: "";
  position: absolute;
  inset: 80px 72px 80px 64px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 50%;
  transform: rotate(-16deg);
}

.signal-card {
  position: absolute;
  z-index: 3;
  isolation: isolate;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 20px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.09), transparent 42%),
    rgba(10, 12, 18, 0.78);
  box-shadow: 0 34px 86px rgba(0, 0, 0, 0.46);
  backdrop-filter: blur(22px);
  transition:
    translate 360ms ease,
    border-color 360ms ease,
    box-shadow 360ms ease;
  animation: cardDrift 8.5s ease-in-out infinite;
  will-change: translate;
}

.signal-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  z-index: 0;
  background: linear-gradient(125deg, transparent 8%, rgba(255, 196, 95, 0.13) 38%, transparent 62%);
  opacity: 0;
  pointer-events: none;
  transition: opacity 360ms ease;
}

.signal-card::after {
  content: "";
  position: absolute;
  inset: auto -20% -44% 38%;
  height: 160px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 106, 26, 0.28), transparent 68%);
  pointer-events: none;
}

.signal-card > * {
  position: relative;
  z-index: 1;
}

.signal-card span {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  margin-bottom: 18px;
  padding: 0 12px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  color: var(--amber);
  font-size: 11px;
  font-weight: 950;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.signal-card h2 {
  margin: 0 0 12px;
  color: #ffffff;
  font-size: clamp(30px, 3.4vw, 48px);
  line-height: 1.02;
}

.signal-card p {
  margin: 0;
  color: #c8ced8;
  font-size: 14px;
  line-height: 1.55;
}

.core-card {
  top: 132px;
  left: 0;
  z-index: 3;
  width: min(70%, 500px);
  min-height: 286px;
  padding: 30px;
  transform: rotate(-4deg);
  animation-delay: -1.2s;
}

.rhythm-card {
  right: 0;
  top: 398px;
  z-index: 4;
  width: min(45%, 330px);
  min-height: 250px;
  padding: 28px 28px 122px;
  transform: rotate(3deg);
  animation-delay: -2.4s;
}

.chord-chip {
  left: 36px;
  bottom: 14px;
  z-index: 4;
  width: min(45%, 330px);
  min-height: 238px;
  padding: 26px 26px 112px;
  transform: rotate(-1deg);
  animation-delay: -3.5s;
}

.purity-card {
  top: 30px;
  right: 8px;
  z-index: 5;
  width: min(35%, 248px);
  min-height: 168px;
  padding: 22px;
  transform: rotate(5deg);
  animation-delay: -4.1s;
}

.purity-card h2 {
  font-size: clamp(32px, 3.6vw, 54px);
}

.meter-scale {
  position: relative;
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  align-items: end;
  gap: 14px;
  height: 88px;
  margin-top: 28px;
  padding-inline: 8px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.045);
}

.meter-scale i {
  display: block;
  width: 2px;
  height: 36px;
  margin-inline: auto;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.26);
}

.meter-scale i.strong {
  height: 72px;
  background: var(--green);
  box-shadow: 0 0 24px rgba(52, 223, 154, 0.62);
}

.meter-scale b {
  position: absolute;
  left: calc(50% - 24px);
  bottom: 18px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, #f3fbff, #92d9ff);
  box-shadow: 0 0 36px rgba(59, 156, 255, 0.6);
  animation: meterGlow 2.7s ease-in-out infinite;
}

.pulse-row {
  display: flex;
  gap: 12px;
  margin-top: 30px;
}

.pulse-row i {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
}

.pulse-row i:first-child {
  background: linear-gradient(135deg, var(--orange), var(--amber));
  box-shadow: 0 0 32px rgba(255, 106, 26, 0.6);
  animation: pulseBeat 1.35s ease-in-out infinite;
}

.hero-peek {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 16px;
  z-index: 1;
  height: 90px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 14px;
  background: rgba(7, 9, 14, 0.66);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.hero-peek::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(10, 12, 18, 0.78), transparent 44%),
    linear-gradient(0deg, rgba(10, 12, 18, 0.34), transparent 58%);
  pointer-events: none;
}

.hero-peek img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.72;
  filter: saturate(0.88) contrast(1.08);
  transform: scale(1.06);
}

.rhythm-card .pulse-row {
  position: absolute;
  top: 124px;
  right: 24px;
  z-index: 2;
  gap: 8px;
  margin: 0;
}

.rhythm-card .pulse-row i {
  width: 10px;
  height: 10px;
}

.rhythm-peek {
  height: 98px;
}

.rhythm-peek img {
  object-position: 50% 15%;
}

.chord-peek {
  height: 92px;
}

.chord-peek img {
  object-position: 50% 56%;
}

.orbit-line {
  position: absolute;
  z-index: 1;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 50%;
}

.line-one {
  inset: 108px 30px 54px 110px;
  transform: rotate(22deg);
}

.line-two {
  inset: 172px 116px 120px 12px;
  transform: rotate(-20deg);
}

.fretboard-mini {
  position: absolute;
  right: 82px;
  bottom: 74px;
  z-index: 2;
  width: 220px;
  height: 124px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 16px;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.24) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.18) 1px, transparent 1px),
    rgba(6, 8, 12, 0.65);
  background-size: 36px 100%, 100% 31px, auto;
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.36);
}

.fretboard-mini i {
  position: absolute;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 22px rgba(59, 156, 255, 0.58);
}

.fretboard-mini i:nth-child(1) {
  left: 44px;
  top: 38px;
}

.fretboard-mini i:nth-child(2) {
  left: 114px;
  top: 68px;
  background: var(--amber);
}

.fretboard-mini i:nth-child(3) {
  left: 158px;
  top: 38px;
  background: var(--green);
}

.fretboard-mini span {
  position: absolute;
  bottom: 8px;
  color: #ffffff;
  font-size: 12px;
  font-weight: 900;
}

.fretboard-mini span:nth-of-type(1) {
  left: 48px;
}

.fretboard-mini span:nth-of-type(2) {
  left: 118px;
}

.fretboard-mini span:nth-of-type(3) {
  left: 162px;
}

.line-tag {
  position: absolute;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 16px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.11);
  color: #ffffff;
  font-size: 12px;
  font-weight: 900;
  backdrop-filter: blur(12px);
}

.line-tag::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 96px;
  height: 1px;
  background: rgba(255, 255, 255, 0.34);
}

.tag-a {
  top: 168px;
  left: 10%;
}

.tag-a::after {
  left: 100%;
}

.tag-b {
  top: 356px;
  right: 3%;
}

.tag-b::after {
  right: 100%;
}

.tag-c {
  bottom: 130px;
  left: 18%;
}

.tag-c::after {
  left: 100%;
}

.device-slab {
  position: absolute;
  z-index: 2;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 20px;
  background: #090b0f;
  box-shadow: 0 34px 92px rgba(0, 0, 0, 0.62);
}

.device-slab::after,
.visual-crop::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.12), transparent 28%),
    linear-gradient(0deg, rgba(2, 3, 6, 0.32), transparent 52%);
}

.device-slab img,
.visual-crop img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 520ms ease;
}

.slab-main {
  left: 9%;
  top: 82px;
  width: min(42vw, 430px);
  height: 300px;
  transform: rotate(-5deg);
}

.slab-main img {
  object-position: 50% 58%;
}

.slab-meter {
  right: 4%;
  top: 398px;
  width: min(38vw, 390px);
  height: 270px;
  transform: rotate(3deg);
}

.slab-meter img {
  object-position: 50% 18%;
}

.slab-chord {
  left: 19%;
  bottom: 40px;
  width: min(35vw, 360px);
  height: 330px;
  transform: rotate(-2deg);
}

.slab-chord img {
  object-position: 50% 54%;
}

.impact {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin: 0 clamp(18px, 6vw, 96px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.35);
}

.impact article {
  min-height: 240px;
  padding: 28px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.052), transparent),
    #090c12;
}

.impact span,
.feature-copy span,
.roadmap span {
  color: var(--amber);
  font-size: 12px;
  font-weight: 950;
}

.impact strong {
  display: block;
  margin: 56px 0 12px;
  color: #ffffff;
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1;
}

.impact p,
.feature-copy p,
.feature-copy li,
.intro p,
.roadmap p,
.download-copy p,
.package-card p {
  color: var(--muted);
  line-height: 1.72;
}

.section {
  padding: 118px clamp(18px, 6vw, 96px);
  scroll-margin-top: 86px;
}

.section-kicker {
  margin-bottom: 28px;
  text-shadow: 0 0 18px rgba(255, 196, 95, 0.35);
}

h2 {
  max-width: 980px;
  margin-bottom: 44px;
  color: #ffffff;
  font-size: clamp(42px, 5.6vw, 86px);
  line-height: 1.03;
  font-weight: 950;
  text-wrap: balance;
}

h3 {
  margin-bottom: 16px;
  color: #ffffff;
  font-size: clamp(28px, 3.1vw, 48px);
  line-height: 1.08;
}

.intro {
  padding-top: 132px;
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(300px, 0.82fr) minmax(320px, 1fr);
  gap: clamp(32px, 8vw, 120px);
  align-items: start;
}

.intro-grid h2 {
  margin-bottom: 0;
}

.intro p {
  font-size: clamp(17px, 1.5vw, 21px);
}

.feature-board {
  padding-top: 80px;
}

.feature-board h2 {
  max-width: 1040px;
  margin-bottom: 26px;
  font-size: clamp(46px, 5.9vw, 92px);
  line-height: 0.98;
}

.section-lead {
  max-width: 850px;
  margin: 0 0 54px;
  color: var(--muted);
  font-size: clamp(17px, 1.5vw, 21px);
  line-height: 1.72;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 20px;
}

.feature-card {
  position: relative;
  min-height: 500px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.055), transparent 30%),
    var(--panel);
  box-shadow: 0 24px 72px rgba(0, 0, 0, 0.28);
  transition:
    translate 360ms ease,
    border-color 360ms ease,
    box-shadow 360ms ease;
}

.feature-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 88% 24%, rgba(255, 106, 26, 0.2), transparent 28rem);
  opacity: 0.7;
  pointer-events: none;
}

.feature-card.wide {
  grid-column: span 12;
  min-height: 560px;
}

.feature-card.compact {
  grid-column: span 6;
  min-height: 460px;
}

.feature-copy {
  position: relative;
  z-index: 2;
  max-width: 560px;
  padding: clamp(28px, 4vw, 54px);
}

.feature-copy h3 {
  margin-top: 18px;
  font-size: clamp(30px, 2.7vw, 44px);
}

.feature-copy p {
  font-size: clamp(16px, 1.45vw, 20px);
}

.feature-card.compact .feature-copy {
  max-width: calc(100% - 260px);
  padding: clamp(30px, 3.2vw, 44px);
}

.feature-card.compact .feature-copy h3 {
  font-size: clamp(28px, 2.45vw, 38px);
}

.feature-copy ul {
  display: grid;
  gap: 10px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.feature-copy li {
  position: relative;
  padding-left: 22px;
}

.feature-copy li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orange);
}

.visual-crop {
  position: absolute;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 18px;
  background: #0b0d12;
  box-shadow: 0 32px 90px rgba(0, 0, 0, 0.55);
  transition: translate 360ms ease;
}

.visual-crop::before {
  content: "";
  position: absolute;
  inset: 12px;
  z-index: 2;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  pointer-events: none;
}

.crop-tuner {
  right: 52px;
  top: 64px;
  width: min(44%, 500px);
  height: 410px;
  transform: rotate(1.4deg);
}

.crop-tuner img {
  object-position: 50% 59%;
}

.crop-presets,
.crop-meter,
.crop-pitch,
.crop-settings {
  right: 24px;
  bottom: 24px;
  width: 220px;
  height: 328px;
}

.crop-presets img {
  object-position: 50% 8%;
}

.crop-meter img {
  object-position: 50% 8%;
}

.crop-pitch img {
  object-position: 50% 12%;
}

.crop-settings img {
  object-position: 50% 62%;
}

.chord-card {
  min-height: 610px;
}

.crop-chord {
  right: 52px;
  top: 42px;
  width: min(43%, 480px);
  height: 520px;
  transform: rotate(-0.8deg);
}

.crop-chord img {
  object-position: 50% 58%;
}

.settings-card::before {
  background: radial-gradient(circle at 82% 12%, rgba(59, 156, 255, 0.2), transparent 24rem);
}

.workflow-section {
  background:
    linear-gradient(180deg, transparent, rgba(255, 106, 26, 0.08) 52%, transparent),
    rgba(255, 255, 255, 0.015);
}

.roadmap {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  counter-reset: item;
}

.roadmap article {
  position: relative;
  min-height: 250px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.045);
}

.roadmap article::after {
  content: "";
  position: absolute;
  right: -13px;
  top: 50%;
  width: 13px;
  height: 1px;
  background: var(--line);
}

.roadmap article:last-child::after {
  display: none;
}

.roadmap h3 {
  margin: 46px 0 12px;
  font-size: clamp(26px, 2.8vw, 40px);
}

.download-section {
  position: relative;
  display: grid;
  grid-template-columns: minmax(320px, 1fr) minmax(300px, 0.64fr);
  gap: clamp(32px, 6vw, 80px);
  align-items: center;
  padding: 130px clamp(18px, 6vw, 96px);
  overflow: hidden;
  border-top: 1px solid var(--line-soft);
}

.download-orb {
  position: absolute;
  right: clamp(20px, 7vw, 120px);
  top: 50%;
  width: min(42vw, 430px);
  aspect-ratio: 1;
  border-radius: 50%;
  transform: translateY(-50%);
  background:
    radial-gradient(circle at 36% 30%, #ffe06f 0 12%, #ff9c25 34%, #ff5f1d 58%, rgba(255, 95, 29, 0.12) 72%);
  box-shadow: 0 0 120px rgba(255, 106, 26, 0.38);
}

.download-copy,
.package-card {
  position: relative;
  z-index: 1;
}

.download-copy h2 {
  margin-bottom: 22px;
}

.download-copy p {
  max-width: 700px;
  font-size: clamp(17px, 1.6vw, 22px);
}

.wechat-safe-note {
  display: none;
  max-width: 720px;
  margin: 24px 0 0;
  padding: 18px 20px;
  border: 1px solid rgba(255, 196, 95, 0.28);
  border-radius: 14px;
  background: rgba(255, 196, 95, 0.08);
  color: #f2d6a0;
  font-size: 15px;
  line-height: 1.7;
}

.wechat-visitor .download-actions {
  display: none;
}

.wechat-visitor .wechat-safe-note {
  display: block;
}

.package-card {
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  background: rgba(5, 7, 12, 0.72);
  backdrop-filter: blur(20px);
  box-shadow: 0 28px 82px rgba(0, 0, 0, 0.42);
}

.package-card dl {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 28px;
}

.package-card div {
  padding: 18px;
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.035);
}

.package-card p {
  margin-bottom: 0;
  overflow-wrap: anywhere;
  font-size: 12px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(18px, 6vw, 96px);
  border-top: 1px solid var(--line-soft);
  color: #8b93a1;
  font-size: 13px;
}

.poster-export .nav-download,
.poster-export .hero-actions,
.poster-export .download-section {
  display: none;
}

.poster-export .hero {
  min-height: 980px;
}

.poster-export .workflow-section {
  padding-bottom: 118px;
}

.poster-export .site-footer {
  background: #020306;
}

@media (hover: hover) {
  .signal-card:hover,
  .feature-card:hover {
    translate: 0 -8px;
    border-color: rgba(255, 196, 95, 0.42);
    box-shadow: 0 38px 110px rgba(0, 0, 0, 0.52);
  }

  .signal-card:hover::before {
    opacity: 1;
  }

  .feature-card:hover .visual-crop {
    translate: 0 -6px;
  }

  .feature-card:hover .visual-crop img {
    transform: scale(1.035);
  }
}

@keyframes sunBreath {
  0%,
  100% {
    scale: 1;
    filter: saturate(1.15);
  }

  50% {
    scale: 1.035;
    filter: saturate(1.28) brightness(1.05);
  }
}

@keyframes cardDrift {
  0%,
  100% {
    translate: 0 0;
  }

  50% {
    translate: 0 -6px;
  }
}

@keyframes meterGlow {
  0%,
  100% {
    box-shadow: 0 0 28px rgba(59, 156, 255, 0.48);
  }

  50% {
    box-shadow: 0 0 46px rgba(98, 217, 255, 0.78);
  }
}

@keyframes pulseBeat {
  0%,
  100% {
    scale: 1;
  }

  50% {
    scale: 1.45;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }

  .signal-card:hover,
  .feature-card:hover,
  .feature-card:hover .visual-crop {
    translate: 0 0;
  }

  .button:hover,
  .feature-card:hover .visual-crop img {
    transform: none;
  }
}

@media (max-width: 1100px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero::before {
    inset: 44% auto auto 40%;
    width: 70vw;
  }

  .hero-stage {
    min-height: 760px;
  }

  .hero-system {
    min-height: 690px;
  }

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

  .impact {
    margin-inline: clamp(18px, 6vw, 96px);
  }

  .intro-grid,
  .download-section {
    grid-template-columns: 1fr;
  }

  .feature-card,
  .feature-card.wide {
    grid-column: 1 / -1;
  }

  .roadmap article::after {
    display: none;
  }
}

@media (max-width: 760px) {
  .site-header {
    height: 60px;
    padding-inline: 16px;
  }

  .brand span {
    max-width: 92px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  nav {
    gap: 12px;
    font-size: 12px;
  }

  nav a:nth-child(2),
  nav a:nth-child(3) {
    display: none;
  }

  .hero {
    padding: 92px 16px 60px;
  }

  h1 {
    font-size: clamp(54px, 18vw, 78px);
  }

  h1 span {
    font-size: clamp(46px, 15vw, 64px);
  }

  h1 strong {
    margin-top: 16px;
    font-size: clamp(25px, 8vw, 34px);
  }

  .hero-subtitle {
    font-size: clamp(20px, 7vw, 30px);
  }

  .lead {
    font-size: 16px;
  }

  .hero-stats {
    grid-template-columns: 1fr;
  }

  .hero-stage {
    min-height: 940px;
  }

  .sun-disc {
    top: 70px;
    right: -20px;
    width: 330px;
  }

  .line-tag {
    display: none;
  }

  .hero-system {
    width: 100%;
    min-height: 900px;
  }

  .hero-system::before,
  .orbit-line {
    display: none;
  }

  .core-card {
    top: 0;
    left: 0;
    width: 100%;
    min-height: 246px;
    padding: 24px;
    transform: rotate(-2deg);
  }

  .rhythm-card {
    top: 654px;
    right: auto;
    left: 0;
    width: 100%;
    min-height: 224px;
    padding: 22px 22px 104px;
    transform: rotate(1deg);
  }

  .chord-chip {
    left: 0;
    top: 402px;
    bottom: auto;
    width: 100%;
    min-height: 220px;
    padding: 22px 22px 96px;
  }

  .purity-card {
    top: 266px;
    right: 0;
    width: 58%;
    min-height: 124px;
    padding: 18px;
  }

  .signal-card h2 {
    font-size: clamp(25px, 8vw, 34px);
  }

  .signal-card p {
    font-size: 13px;
  }

  .meter-scale {
    height: 72px;
  }

  .hero-peek {
    left: 14px;
    right: 14px;
    bottom: 14px;
    height: 78px;
  }

  .rhythm-card .pulse-row {
    top: 110px;
    right: 20px;
  }

  .fretboard-mini {
    display: none;
  }

  .slab-main {
    left: 2%;
    top: 70px;
    width: 250px;
    height: 210px;
  }

  .slab-meter {
    right: -10px;
    top: 250px;
    width: 230px;
    height: 180px;
  }

  .slab-chord {
    left: 12px;
    bottom: 12px;
    width: 224px;
    height: 210px;
  }

  .impact,
  .feature-grid,
  .roadmap,
  .package-card dl {
    grid-template-columns: 1fr;
  }

  .impact {
    margin-inline: 16px;
  }

  .impact article {
    min-height: 190px;
  }

  .impact strong {
    margin-top: 34px;
  }

  .section,
  .download-section {
    padding: 78px 16px;
  }

  h2 {
    font-size: clamp(38px, 12vw, 56px);
  }

  h3 {
    font-size: clamp(28px, 9vw, 38px);
  }

  .feature-card,
  .feature-card.wide,
  .chord-card {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    min-height: 0;
  }

  .feature-card.compact {
    min-height: 0;
  }

  .feature-card.compact .feature-copy {
    max-width: 100%;
  }

  .feature-copy {
    padding: 28px 28px 18px;
  }

  .feature-copy h3 {
    font-size: clamp(27px, 8.4vw, 36px);
  }

  .feature-copy ul {
    margin-top: 18px;
  }

  .visual-crop,
  .crop-tuner,
  .crop-chord {
    position: relative;
    inset: auto;
    align-self: stretch;
    width: auto;
    height: min(82vw, 340px);
    margin: 0 22px 24px;
    transform: none;
  }

  .crop-tuner {
    height: min(66vw, 300px);
  }

  .crop-chord {
    height: min(96vw, 420px);
  }

  .crop-presets,
  .crop-meter,
  .crop-pitch,
  .crop-settings {
    height: min(86vw, 360px);
  }

  .visual-crop::before {
    inset: 10px;
  }

  .download-orb {
    right: -90px;
    width: 320px;
  }

  .site-footer {
    flex-direction: column;
    padding-inline: 16px;
  }
}