:root {
  --paper: #f6f2ec;
  --paper-soft: #fff7ed;
  --ink: #1f1b16;
  --muted: #6d5748;
  --muted-strong: #5a4031;
  --accent: #f29e4c;
  --accent-soft: rgba(242, 158, 76, 0.18);
  --primary: #2a6f5e;
  --primary-soft: rgba(42, 111, 94, 0.2);
  --tertiary: #3d2c8d;
  --border: rgba(31, 27, 22, 0.12);
  --shadow: 0 24px 50px rgba(31, 27, 22, 0.16);
  --shadow-soft: 0 12px 26px rgba(31, 27, 22, 0.1);
  --radius-lg: 24px;
  --radius-md: 16px;
  --font-serif: "Alegreya", "Georgia", serif;
  --font-sans: "Space Grotesk", "Trebuchet MS", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-serif);
  color: var(--ink);
  background:
    radial-gradient(circle at top left, #fffaf4 0%, #f6f2ec 45%, #efe6db 100%),
    repeating-linear-gradient(
      115deg,
      rgba(31, 27, 22, 0.03) 0,
      rgba(31, 27, 22, 0.03) 2px,
      transparent 2px,
      transparent 8px
    );
  min-height: 100vh;
  line-height: 1.6;
}

body::before,
body::after {
  content: "";
  position: fixed;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  z-index: 0;
  filter: blur(0);
  pointer-events: none;
}

body::before {
  background: radial-gradient(circle, rgba(42, 111, 94, 0.2), transparent 70%);
  top: -80px;
  right: 10%;
}

body::after {
  background: radial-gradient(circle, rgba(242, 158, 76, 0.22), transparent 70%);
  bottom: -120px;
  left: 6%;
}

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

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

a:focus-visible,
.button:focus-visible {
  outline: 2px solid rgba(242, 158, 76, 0.7);
  outline-offset: 3px;
}

.page {
  max-width: 1120px;
  margin: 0 auto;
  padding: 28px clamp(20px, 4vw, 40px) 60px;
  position: relative;
  z-index: 1;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 16px;
  border-radius: 999px;
  background: rgba(255, 247, 237, 0.72);
  border: 1px solid rgba(31, 27, 22, 0.08);
  box-shadow: var(--shadow-soft);
  position: sticky;
  top: 16px;
  backdrop-filter: blur(12px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand img {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid rgba(31, 27, 22, 0.12);
  background: #fff7ed;
}

.brand-name {
  font-family: var(--font-sans);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-tag {
  font-size: 0.82rem;
  color: var(--muted);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
}

.nav-links a {
  color: var(--muted-strong);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  padding: 10px 18px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid var(--border);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.button.primary {
  background: linear-gradient(135deg, rgba(42, 111, 94, 0.95), rgba(42, 111, 94, 0.72));
  color: #fffaf3;
  border-color: rgba(42, 111, 94, 0.4);
  box-shadow: 0 16px 30px rgba(42, 111, 94, 0.25);
}

.button.ghost {
  background: rgba(255, 255, 255, 0.7);
}

.button.small {
  padding: 8px 14px;
  font-size: 0.85rem;
  background: rgba(242, 158, 76, 0.18);
  border-color: rgba(242, 158, 76, 0.4);
}

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

main {
  display: grid;
  gap: 80px;
  margin-top: 40px;
}

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 36px;
  align-items: center;
}

.hero-copy {
  display: grid;
  gap: 18px;
}

.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted-strong);
}

h1,
h2,
h3 {
  font-family: var(--font-sans);
  letter-spacing: 0.01em;
  margin: 0;
}

h1 {
  font-size: clamp(2.4rem, 4vw, 3.6rem);
  line-height: 1.1;
}

h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  line-height: 1.2;
}

h3 {
  font-size: 1.2rem;
}

.lead {
  font-size: 1.1rem;
  color: var(--muted);
  margin: 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--muted-strong);
}

.hero-meta span {
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(31, 27, 22, 0.05);
  border: 1px solid rgba(31, 27, 22, 0.1);
}

.progression-ribbon {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding: 10px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(31, 27, 22, 0.08);
  font-family: var(--font-sans);
}

.progression-ribbon span {
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(242, 158, 76, 0.15);
  border: 1px solid rgba(242, 158, 76, 0.4);
  font-size: 0.85rem;
}

.hero-visual {
  position: relative;
  display: grid;
  gap: 18px;
  justify-items: center;
}

.device-card {
  width: min(420px, 92vw);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.95), rgba(255, 247, 237, 0.85));
  border-radius: var(--radius-lg);
  border: 1px solid rgba(31, 27, 22, 0.08);
  padding: 20px;
  box-shadow: var(--shadow);
  display: grid;
  gap: 16px;
}

.device-header {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(42, 111, 94, 0.16);
  border: 1px solid rgba(42, 111, 94, 0.3);
  color: var(--ink);
}

.pill.muted {
  background: rgba(31, 27, 22, 0.06);
  border-color: rgba(31, 27, 22, 0.12);
  color: var(--muted-strong);
}

.device-chords {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 16px;
  background: rgba(31, 27, 22, 0.08);
}

.chord-block {
  display: grid;
  gap: 4px;
}

.chord-block.next {
  text-align: right;
}

.chord-block .label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted-strong);
  font-family: var(--font-sans);
}

.chord-block .chord {
  font-size: 2rem;
  font-weight: 700;
  color: var(--ink);
  font-family: var(--font-sans);
}

.chord-block .sub {
  font-size: 0.8rem;
  color: var(--muted);
}

.divider {
  width: 1px;
  height: 48px;
  background: rgba(31, 27, 22, 0.2);
}

.fretboard-visual {
  position: relative;
  height: 160px;
  border-radius: 18px;
  background: #f5efe6;
  border: 1px solid rgba(31, 27, 22, 0.1);
  overflow: hidden;
  padding: 16px 14px;
  display: grid;
  gap: 12px;
}

.fretboard-visual::before {
  content: "";
  position: absolute;
  inset: 16px 12px;
  background-image: linear-gradient(to right, rgba(31, 27, 22, 0.18) 1px, transparent 1px);
  background-size: 12.5% 100%;
  pointer-events: none;
}

.string {
  height: 2px;
  background: rgba(31, 27, 22, 0.45);
  border-radius: 999px;
}

.note {
  position: absolute;
  left: var(--x);
  top: var(--y);
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 700;
  color: #fffaf3;
  transform: translate(-50%, -50%);
  box-shadow: 0 8px 18px rgba(31, 27, 22, 0.2);
}

.note.root {
  background: var(--primary);
}

.note.third {
  background: var(--accent);
  color: var(--ink);
}

.note.fifth {
  background: var(--tertiary);
}

.note.ghost {
  background: transparent;
  border: 2px dashed rgba(242, 158, 76, 0.8);
  color: var(--muted-strong);
  box-shadow: none;
}

.device-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.control {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(31, 27, 22, 0.14);
  background: rgba(255, 255, 255, 0.7);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--muted-strong);
}

.control.active {
  background: var(--accent);
  color: var(--ink);
  border-color: transparent;
}

.session-card {
  position: static;
  justify-self: end;
  margin-top: 4px;
  max-width: 240px;
  background: linear-gradient(135deg, rgba(42, 111, 94, 0.2), rgba(255, 247, 237, 0.95));
  border-radius: 18px;
  border: 1px solid rgba(42, 111, 94, 0.4);
  padding: 16px 18px;
  box-shadow: 0 18px 34px rgba(42, 111, 94, 0.2);
  display: grid;
  gap: 6px;
  min-width: 220px;
}

.session-title {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted-strong);
}

.session-chords {
  font-family: var(--font-sans);
  font-size: 1.2rem;
  font-weight: 700;
}

.session-meta {
  font-size: 0.85rem;
  color: var(--muted);
}

.section {
  display: grid;
  gap: 28px;
}

.section-head {
  display: grid;
  gap: 12px;
  max-width: 680px;
}

.feature-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.feature-card {
  background: rgba(255, 255, 255, 0.78);
  border-radius: var(--radius-md);
  padding: 18px;
  border: 1px solid rgba(31, 27, 22, 0.08);
  box-shadow: var(--shadow-soft);
  display: grid;
  gap: 10px;
}

.feature-card h3 {
  margin: 0;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
}

.feature-tag {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted-strong);
}

.flow-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.flow-step {
  padding: 18px;
  border-radius: 18px;
  background: rgba(31, 27, 22, 0.06);
  border: 1px solid rgba(31, 27, 22, 0.08);
}

.step-number {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--primary);
  margin-bottom: 6px;
}

.builder-card {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 22px;
  padding: 24px;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(42, 111, 94, 0.18), rgba(255, 247, 237, 0.95));
  border: 1px solid rgba(42, 111, 94, 0.4);
  box-shadow: 0 24px 46px rgba(42, 111, 94, 0.18);
}

.builder-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.builder-chip {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(31, 27, 22, 0.12);
  background: rgba(255, 255, 255, 0.8);
  font-family: var(--font-sans);
  font-size: 0.8rem;
}

.builder-example {
  background: rgba(255, 255, 255, 0.7);
  border-radius: 18px;
  padding: 18px;
  border: 1px solid rgba(31, 27, 22, 0.1);
  display: grid;
  gap: 8px;
  font-family: var(--font-sans);
}

.builder-title {
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted-strong);
}

.builder-line {
  font-size: 1.2rem;
  font-weight: 600;
}

.builder-meta {
  font-size: 0.85rem;
  color: var(--muted);
}

.cta {
  display: grid;
  gap: 18px;
  padding: 24px;
  border-radius: 24px;
  background: rgba(31, 27, 22, 0.08);
  border: 1px solid rgba(31, 27, 22, 0.1);
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  margin-top: 60px;
  font-size: 0.9rem;
  color: var(--muted);
}

[data-animate] {
  opacity: 0;
  transform: translateY(16px);
  animation: rise 0.8s ease forwards;
  animation-delay: var(--delay, 0s);
}

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

@media (max-width: 900px) {
  .nav {
    flex-direction: column;
    align-items: flex-start;
    border-radius: 24px;
  }

  .session-card {
    width: 100%;
    max-width: none;
    justify-self: stretch;
    margin-top: 12px;
  }

  .hero-visual {
    gap: 20px;
  }
}

@media (max-width: 700px) {
  .nav-links {
    flex-wrap: wrap;
  }

  .device-chords {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .divider {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transform: none !important;
  }

  [data-animate] {
    opacity: 1 !important;
  }
}