/* Neuron — ceramic paper · cobalt chrome */

:root {
  --paper: #f3f5f9;
  --paper-deep: #e6eaf2;
  --surface: #fdfdfc;
  --ink: #1f1f24;
  --ink-2: #6b6b75;
  --ink-3: #94949c;
  --accent: #2e61d1;
  --accent-deep: #294db8;
  --accent-soft: rgba(46, 97, 209, 0.12);
  --accent-haze: rgba(148, 179, 224, 0.55);
  --learnt: #2eb86c;
  --again: #e64d57;
  --streak: #ff8c52;
  --border: rgba(0, 0, 0, 0.07);
  --shadow: 0 18px 50px rgba(40, 50, 80, 0.12);
  --shadow-sm: 0 8px 24px rgba(40, 50, 80, 0.08);
  --radius: 22px;
  --radius-card: 26px;
  --font: "Nunito", system-ui, sans-serif;
  --nav-h: 68px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --spring: cubic-bezier(0.34, 1.4, 0.64, 1);
  --max: 1120px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
ul { list-style: none; }

/* Atmosphere — Mist glaze default */
.atmosphere {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    linear-gradient(145deg, #e6eaf4 0%, #f3f5f9 42%, #e0e5ef 100%);
  transition: background 0.6s var(--ease);
}

.haze {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  transition: background 0.6s var(--ease), opacity 0.6s;
}

.haze-tr {
  width: min(520px, 70vw);
  height: min(520px, 70vw);
  top: -8%;
  right: -6%;
  background: var(--accent-haze);
  opacity: 0.55;
}

.haze-bl {
  width: min(420px, 60vw);
  height: min(420px, 60vw);
  bottom: 10%;
  left: -8%;
  background: rgba(180, 200, 230, 0.35);
  opacity: 0.5;
}

body[data-glaze="dust"] {
  --paper: #f9f4f2;
  --paper-deep: #f0e6e2;
  --accent-haze: rgba(214, 184, 178, 0.55);
}
body[data-glaze="dust"] .atmosphere {
  background: linear-gradient(145deg, #f0e8e5 0%, #f9f4f2 45%, #ebe0dc 100%);
}
body[data-glaze="dust"] .haze-bl { background: rgba(220, 190, 185, 0.4); }

body[data-glaze="sand"] {
  --paper: #f9f7f2;
  --paper-deep: #efe9dc;
  --accent-haze: rgba(219, 204, 163, 0.5);
}
body[data-glaze="sand"] .atmosphere {
  background: linear-gradient(145deg, #f0ebdf 0%, #f9f7f2 45%, #e8e2d4 100%);
}
body[data-glaze="sand"] .haze-bl { background: rgba(210, 195, 150, 0.35); }

/* Nav */
.nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(18px, 4vw, 40px);
  transition: background 0.35s, box-shadow 0.35s, backdrop-filter 0.35s;
}

.nav.scrolled {
  background: color-mix(in srgb, var(--paper) 82%, white);
  backdrop-filter: blur(16px) saturate(1.2);
  box-shadow: 0 1px 0 var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  box-shadow: 0 0 0 3px var(--accent-soft);
  position: relative;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 50%;
  background: white;
  opacity: 0.9;
}

.nav-links {
  display: flex;
  gap: 28px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink-2);
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--ink); }

.menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
}

.menu-btn span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 800;
  font-size: 0.95rem;
  padding: 12px 22px;
  border-radius: 999px;
  transition: transform 0.25s var(--spring), box-shadow 0.25s, background 0.2s;
}

.btn:active { transform: scale(0.96); }

.btn-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  color: #fff;
  box-shadow: 0 10px 28px rgba(46, 97, 209, 0.28);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 36px rgba(46, 97, 209, 0.34);
}

.btn-ghost {
  background: color-mix(in srgb, white 70%, transparent);
  border: 1px solid var(--border);
  color: var(--ink-2);
}

.btn-ghost:hover {
  color: var(--ink);
  background: white;
}

.btn-lg { padding: 15px 28px; font-size: 1rem; }

.eyebrow {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}

h2 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 900;
  letter-spacing: -0.035em;
  line-height: 1.05;
}

.section-intro {
  max-width: 520px;
  margin: 0 auto 56px;
  text-align: center;
}

.section-intro p:not(.eyebrow) {
  margin-top: 14px;
  color: var(--ink-2);
  font-weight: 600;
  font-size: 1.05rem;
}

main { position: relative; z-index: 1; }

/* ── Cinema intro ── */
.cinema {
  position: relative;
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: var(--nav-h) 20px 40px;
  overflow: hidden;
}

.cinema.done {
  display: none;
}

.cinema-stage {
  position: relative;
  width: min(340px, 86vw);
  height: min(460px, 70svh);
  perspective: 1400px;
}

.cinema-card {
  position: absolute;
  inset: 8% 6%;
  transform-style: preserve-3d;
  transition: transform 0.7s var(--ease), opacity 0.5s, filter 0.5s;
  z-index: 2;
}

.cinema-card.flip { transform: rotateY(180deg); }
.cinema-card.fold {
  transform: rotateX(78deg) scale(0.92);
  opacity: 0;
  filter: blur(6px);
}

.cinema-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  background: var(--surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
}

.cinema-face.back { transform: rotateY(180deg); }

.face-chip {
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}

.face-q, .face-a {
  font-size: clamp(1.45rem, 4vw, 1.85rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.25;
  flex: 1;
}

.face-hint {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--ink-3);
  text-align: center;
}

.synapse {
  position: absolute;
  left: 50%;
  top: 42%;
  width: 12px;
  height: 12px;
  margin: -6px 0 0 -6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0;
  z-index: 3;
  pointer-events: none;
}

.synapse.on {
  animation: synapse-burst 0.85s var(--ease) forwards;
}

@keyframes synapse-burst {
  0% { opacity: 0; transform: scale(0.4); box-shadow: 0 0 0 0 rgba(46,97,209,0.5); }
  35% { opacity: 1; transform: scale(1); box-shadow: 0 0 0 28px rgba(46,97,209,0); }
  100% { opacity: 0; transform: scale(4); box-shadow: 0 0 0 60px rgba(46,97,209,0); }
}

.brand-bloom {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  text-align: center;
  z-index: 4;
  pointer-events: none;
}

.bloom-title {
  font-size: clamp(3.4rem, 12vw, 5.2rem);
  font-weight: 900;
  letter-spacing: -0.045em;
  line-height: 1;
  display: flex;
  justify-content: center;
  gap: 0.02em;
}

.bloom-title span {
  display: inline-block;
  opacity: 0;
  transform: translateY(18px) scale(0.92);
  filter: blur(4px);
}

.bloom-title.show span {
  animation: letter-in 0.55s var(--ease) forwards;
}

.bloom-title.show span:nth-child(1) { animation-delay: 0.00s; }
.bloom-title.show span:nth-child(2) { animation-delay: 0.05s; }
.bloom-title.show span:nth-child(3) { animation-delay: 0.10s; }
.bloom-title.show span:nth-child(4) { animation-delay: 0.15s; }
.bloom-title.show span:nth-child(5) { animation-delay: 0.20s; }
.bloom-title.show span:nth-child(6) { animation-delay: 0.25s; }

@keyframes letter-in {
  to { opacity: 1; transform: none; filter: none; }
}

.bloom-tag {
  margin-top: 14px;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--ink-2);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.bloom-tag.show {
  opacity: 1;
  transform: none;
}

.cinema-skip {
  position: absolute;
  bottom: 28px;
  right: clamp(18px, 4vw, 40px);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--ink-3);
  padding: 8px 12px;
  z-index: 5;
}

.cinema-skip:hover { color: var(--ink); }

body.cinema-playing .nav { opacity: 0; pointer-events: none; }
body.cinema-playing .hero,
body.cinema-playing .study,
body.cinema-playing .modes,
body.cinema-playing .glaze,
body.cinema-playing .ai,
body.cinema-playing .get,
body.cinema-playing .footer {
  opacity: 0;
}

/* ── Hero ── */
.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: center;
  max-width: var(--max);
  margin: 0 auto;
  padding: 48px clamp(18px, 4vw, 40px) 100px;
  min-height: calc(100svh - var(--nav-h));
}

.hero-title {
  font-size: clamp(2.6rem, 5.5vw, 3.8rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 18px;
}

.hero-sub {
  color: var(--ink-2);
  font-weight: 600;
  font-size: 1.08rem;
  max-width: 420px;
  margin-bottom: 32px;
}

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

.hero-stage {
  position: relative;
  height: 480px;
  display: grid;
  place-items: center;
}

.fan {
  position: relative;
  width: 260px;
  height: 360px;
  perspective: 1000px;
}

.fan-card {
  position: absolute;
  inset: 0;
  background: var(--surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 24px 20px;
  transform-origin: 50% 100%;
  transition: transform 0.7s var(--ease);
}

.fan-card span {
  display: block;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}

.fan-card p {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.fan-card.c4 { transform: rotate(-14deg) translate(-42px, 18px) scale(0.92); opacity: 0.55; z-index: 1; }
.fan-card.c3 { transform: rotate(-7deg) translate(-18px, 8px) scale(0.96); opacity: 0.75; z-index: 2; }
.fan-card.c2 { transform: rotate(5deg) translate(16px, 6px) scale(0.97); opacity: 0.85; z-index: 3; }
.fan-card.c1 {
  z-index: 4;
  cursor: pointer;
  transform-style: preserve-3d;
  background: transparent;
  border: none;
  box-shadow: none;
  padding: 0;
}

.live-front, .live-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  background: var(--surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
}

.live-back { transform: rotateY(180deg); }

.fan-card.c1.flipped { transform: rotateY(180deg); }

.live-front span, .live-back span {
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}

.live-front p, .live-back p {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  flex: 1;
}

.live-front em, .live-back em {
  font-style: normal;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--ink-3);
  text-align: center;
}

.learnt { color: var(--learnt) !important; }

.hero-stage:hover .fan-card.c4 { transform: rotate(-18deg) translate(-54px, 22px) scale(0.9); }
.hero-stage:hover .fan-card.c3 { transform: rotate(-10deg) translate(-28px, 10px) scale(0.94); }
.hero-stage:hover .fan-card.c2 { transform: rotate(9deg) translate(28px, 8px) scale(0.95); }

.streak-pill {
  position: absolute;
  bottom: 24px;
  right: 8%;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: color-mix(in srgb, white 88%, transparent);
  border: 1px solid var(--border);
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--ink-2);
  animation: float-y 4s ease-in-out infinite;
}

.streak-pill strong { color: var(--streak); font-size: 1.05rem; }

.flame {
  width: 14px;
  height: 18px;
  background: linear-gradient(180deg, #ffd36a, var(--streak));
  border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
  clip-path: polygon(50% 0%, 85% 40%, 70% 100%, 30% 100%, 15% 40%);
}

@keyframes float-y {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* Study playground */
.study {
  max-width: var(--max);
  margin: 0 auto;
  padding: 40px clamp(18px, 4vw, 40px) 100px;
}

.study-playground {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

.deck {
  position: relative;
  width: min(300px, 86vw);
  height: 400px;
  perspective: 1200px;
}

.deck-card {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-card);
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.deck-card.shadow-2 { transform: translateY(16px) scale(0.94); opacity: 0.45; }
.deck-card.shadow-1 { transform: translateY(8px) scale(0.97); opacity: 0.7; }

.deck-card.active {
  transform-style: preserve-3d;
  cursor: pointer;
  background: transparent;
  border: none;
  box-shadow: none;
  padding: 0;
  transition: transform 0.55s var(--ease), opacity 0.4s;
}

.deck-card.active.flipped { transform: rotateY(180deg); }
.deck-card.active.fly-up {
  transform: translateY(-140%) rotate(-8deg) scale(0.9);
  opacity: 0;
}
.deck-card.active.fly-down {
  transform: translateY(140%) rotate(8deg) scale(0.9);
  opacity: 0;
}

.sc-front, .sc-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  background: var(--surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
}

.sc-back { transform: rotateY(180deg); }

.sc-tag {
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}

.sc-front p, .sc-back p {
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.28;
  flex: 1;
}

.sc-hint {
  text-align: center;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ink-3);
}

.learnt-hint { color: var(--learnt); }

.rate-row {
  display: flex;
  gap: 12px;
}

.rate-row[hidden] {
  display: none !important;
}

.rate {
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  background: white;
  transition: transform 0.2s var(--spring), background 0.2s;
}

.rate:hover { transform: scale(1.04); }
.rate.again { color: var(--again); background: rgba(230, 77, 87, 0.08); }
.rate.good { color: var(--learnt); background: rgba(46, 184, 108, 0.1); }

/* Modes */
.modes {
  max-width: var(--max);
  margin: 0 auto;
  padding: 20px clamp(18px, 4vw, 40px) 100px;
}

.mode-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.mode {
  background: color-mix(in srgb, white 78%, transparent);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 28px;
  transition: transform 0.35s var(--ease), box-shadow 0.35s;
}

.mode:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.mode-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(46, 184, 108, 0.12);
  color: var(--learnt);
  margin-bottom: 14px;
}

.test-b {
  background: var(--accent-soft);
  color: var(--accent);
}

.mode h3 {
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 10px;
}

.mode-top p {
  color: var(--ink-2);
  font-weight: 600;
}

.mode-art {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: auto;
}

.mini {
  flex: 1;
  background: white;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
  font-weight: 800;
  font-size: 0.92rem;
  box-shadow: var(--shadow-sm);
}

.mini.a { transform: rotate(3deg); color: var(--ink-2); }

.ring {
  position: relative;
  width: 72px;
  height: 72px;
  flex-shrink: 0;
}

.ring svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.ring circle {
  fill: none;
  stroke: var(--accent-soft);
  stroke-width: 5;
}

.ring-prog {
  stroke: var(--accent) !important;
  stroke-linecap: round;
  stroke-dasharray: 100;
  stroke-dashoffset: 70;
  animation: ring-spin 2.4s linear infinite;
}

@keyframes ring-spin {
  to { stroke-dashoffset: 0; }
}

.ring span {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 0.85rem;
  color: var(--accent);
}

/* Glaze */
.glaze {
  max-width: var(--max);
  margin: 0 auto;
  padding: 20px clamp(18px, 4vw, 40px) 100px;
}

.glaze-switch {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 36px;
  padding: 6px;
  width: fit-content;
  margin-inline: auto;
  background: color-mix(in srgb, white 70%, transparent);
  border: 1px solid var(--border);
  border-radius: 999px;
}

.glaze-tab {
  padding: 10px 22px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 0.9rem;
  color: var(--ink-2);
  transition: background 0.25s, color 0.25s, transform 0.2s var(--spring);
}

.glaze-tab.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  color: white;
}

.glaze-preview {
  display: flex;
  justify-content: center;
}

.preview-phone {
  width: min(280px, 80vw);
  background: color-mix(in srgb, white 85%, transparent);
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 24px 20px;
  box-shadow: var(--shadow);
  transition: background 0.5s;
}

.preview-bar {
  display: flex;
  justify-content: space-between;
  font-weight: 800;
  font-size: 0.85rem;
  margin-bottom: 20px;
  color: var(--ink-2);
}

.preview-streak { color: var(--streak); }

.preview-card {
  background: white;
  border-radius: 18px;
  border: 1px solid var(--border);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.preview-card span {
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}

.preview-card strong {
  display: block;
  font-size: 1.6rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  margin: 8px 0 16px;
}

.preview-meter {
  height: 8px;
  border-radius: 999px;
  background: var(--paper-deep);
  overflow: hidden;
}

.preview-meter i {
  display: block;
  width: 68%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--learnt));
}

/* AI */
.ai {
  max-width: var(--max);
  margin: 0 auto 40px;
  padding: 48px clamp(18px, 4vw, 40px);
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: center;
  background: color-mix(in srgb, white 70%, transparent);
  border: 1px solid var(--border);
  border-radius: 28px;
  box-shadow: var(--shadow-sm);
  width: calc(100% - clamp(36px, 8vw, 80px));
}

.ai-copy h2 { margin-bottom: 14px; }
.ai-copy > p {
  color: var(--ink-2);
  font-weight: 600;
  margin-bottom: 22px;
}

.ai-copy li {
  position: relative;
  padding-left: 22px;
  font-weight: 700;
  margin-bottom: 10px;
}

.ai-copy li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--learnt);
}

.ai-flow {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.notes {
  background: var(--ink);
  color: #d8d8de;
  border-radius: 16px;
  overflow: hidden;
}

.notes-top {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: rgba(255,255,255,0.06);
  font-size: 0.72rem;
  font-weight: 700;
  color: #9a9aa4;
}

.notes-top i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #5a5a64;
}

.notes-top i:nth-child(1) { background: #ff5f57; }
.notes-top i:nth-child(2) { background: #febc2e; }
.notes-top i:nth-child(3) { background: #28c840; }

.notes pre {
  padding: 14px 16px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.78rem;
  line-height: 1.65;
  white-space: pre-wrap;
}

.flow-spark {
  text-align: center;
  color: var(--accent);
  font-size: 1.2rem;
  animation: spark 1.6s ease-in-out infinite;
}

@keyframes spark {
  0%, 100% { opacity: 0.4; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.15); }
}

.ai-cards { display: flex; flex-direction: column; gap: 10px; }

.ai-card {
  display: flex;
  align-items: center;
  gap: 10px;
  background: white;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px 16px;
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: var(--shadow-sm);
  animation: rise 0.7s var(--ease) both;
  animation-delay: calc(var(--i) * 0.12s);
}

.ai-card b {
  font-size: 0.65rem;
  padding: 4px 7px;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--accent);
}

@keyframes rise {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}

/* Get */
.get {
  max-width: var(--max);
  margin: 0 auto;
  padding: 40px clamp(18px, 4vw, 40px) 100px;
}

.get-card {
  text-align: center;
  padding: 64px 28px;
  background: color-mix(in srgb, white 75%, transparent);
  border: 1px solid var(--border);
  border-radius: 28px;
  box-shadow: var(--shadow-sm);
}

.get-card h2 { margin-bottom: 12px; }
.get-card p {
  color: var(--ink-2);
  font-weight: 600;
  font-size: 1.1rem;
  margin-bottom: 28px;
}

.get-note {
  display: block;
  margin-top: 18px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--ink-3);
}

/* Footer */
.footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 40px 20px 56px;
  border-top: 1px solid var(--border);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 20px;
}

.footer-brand strong {
  font-size: 1.4rem;
  font-weight: 900;
  letter-spacing: -0.03em;
}

.footer-brand span {
  font-weight: 600;
  color: var(--ink-3);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 18px;
}

.footer-links a {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--ink-2);
}

.footer-links a:hover { color: var(--accent); }

.footer-copy {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--ink-3);
}

/* Reveal helpers */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.in {
  opacity: 1;
  transform: none;
}

/* Responsive */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    min-height: auto;
    padding-top: 24px;
  }

  .hero-sub { margin-inline: auto; }
  .hero-actions { justify-content: center; }
  .hero-stage { order: -1; height: 420px; }
  .streak-pill { right: 50%; transform: translateX(50%); bottom: 0; }
  .mode-grid { grid-template-columns: 1fr; }
  .ai {
    grid-template-columns: 1fr;
    width: calc(100% - 36px);
    padding: 36px 24px;
  }
}

@media (max-width: 720px) {
  .nav-links, .nav-cta { display: none; }
  .menu-btn { display: flex; }

  .nav.open .nav-links {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: var(--nav-h) 0 0;
    background: color-mix(in srgb, var(--paper) 94%, white);
    backdrop-filter: blur(16px);
    padding: 28px;
    gap: 22px;
  }

  .nav.open .nav-links a { font-size: 1.25rem; color: var(--ink); }
  .nav.open .menu-btn span:first-child { transform: translateY(4px) rotate(45deg); }
  .nav.open .menu-btn span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .nav.open .nav-cta {
    display: inline-flex;
    position: fixed;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 60;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  body.cinema-playing .hero,
  body.cinema-playing .study,
  body.cinema-playing .modes,
  body.cinema-playing .glaze,
  body.cinema-playing .ai,
  body.cinema-playing .get,
  body.cinema-playing .footer { opacity: 1; }
  .cinema { display: none; }
}