/* Syntotec · landing. Mismos colores que la app, sin dependencias ni fuentes externas. */

:root {
  --bg: #06070d;
  --bg2: #0a0c18;
  --panel: rgba(16, 18, 34, 0.72);
  --panel-solid: #0e101e;
  --border: rgba(120, 130, 200, 0.18);
  --border-strong: rgba(150, 160, 230, 0.34);
  --text: #eceef8;
  --dim: #9aa0bf;
  --accent: #ff4f87;
  --accent-2: #8b5cf6;
  --info: #5cc8ff;
  --ok: #5fe08a;
  --warn: #ffc857;
  --radius: 18px;
  --font: Inter, -apple-system, 'Segoe UI', Roboto, system-ui, sans-serif;
  --mono: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --pulse: 0;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; background: var(--bg); }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: transparent;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
kbd {
  font-family: var(--mono); font-size: 0.78em; padding: 1px 6px; border-radius: 5px;
  background: rgba(255, 255, 255, 0.08); border: 1px solid var(--border);
}
:focus-visible { outline: 2px solid var(--info); outline-offset: 3px; border-radius: 6px; }
.skip {
  position: fixed; left: 12px; top: -60px; z-index: 100; padding: 8px 14px; border-radius: 8px;
  background: var(--accent); color: #fff; text-decoration: none; transition: top 0.2s;
}
.skip:focus { top: 12px; }

/* ---------- Fondo: arte VJ + velo ---------- */
#vj { position: fixed; inset: 0; width: 100vw; height: 100vh; z-index: -2; background: #000; }
.veil {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(1100px 600px at 12% -8%, rgba(255, 79, 135, 0.20), transparent 60%),
    radial-gradient(900px 600px at 95% 8%, rgba(92, 200, 255, 0.16), transparent 62%),
    radial-gradient(900px 700px at 50% 110%, rgba(139, 92, 246, 0.18), transparent 60%),
    linear-gradient(180deg, rgba(6, 7, 13, 0.78), rgba(6, 7, 13, 0.9));
  transition: opacity 1.2s var(--ease), background 1.2s var(--ease);
}
/* Mientras dura la intro (html sin .no-intro ni .intro-done) el contenido no se ve ni se puede tocar */
html.js:not(.no-intro):not(.intro-done) .veil { opacity: 0.35; }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; color: var(--text);
  padding: 11px 20px; border-radius: 999px; border: 1px solid var(--border-strong);
  background: rgba(255, 255, 255, 0.04); transition: transform 0.25s var(--ease), box-shadow 0.25s, background 0.25s, border-color 0.25s;
}
.btn:hover { transform: translateY(-2px); background: rgba(255, 255, 255, 0.09); border-color: rgba(190, 200, 255, 0.5); }
.btn:active { transform: translateY(0); }
.btn-primary {
  border-color: transparent; color: #fff;
  background: linear-gradient(120deg, #ff4f87 0%, #b05cf6 55%, #5c8cff 100%);
  box-shadow: 0 8px 30px rgba(255, 79, 135, 0.32), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.btn-primary:hover { background: linear-gradient(120deg, #ff6a9a 0%, #bd74f8 55%, #78a0ff 100%); box-shadow: 0 12px 40px rgba(255, 79, 135, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.3); }
.btn-ghost { background: transparent; }
.btn-lg { padding: 15px 28px; font-size: 1.05rem; }
.btn-sm { padding: 8px 16px; font-size: 0.9rem; }
.icon-btn {
  display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 50%; cursor: pointer; color: var(--text);
  background: rgba(255, 255, 255, 0.05); border: 1px solid var(--border); transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.icon-btn:hover { background: rgba(255, 255, 255, 0.12); }
.icon-btn.on { color: var(--accent); border-color: var(--accent); box-shadow: 0 0 18px rgba(255, 79, 135, 0.4); }

/* ---------- Navegación ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 40; display: flex; align-items: center; gap: 18px;
  padding: 12px clamp(16px, 4vw, 40px);
  background: rgba(8, 9, 18, 0.55); -webkit-backdrop-filter: blur(16px) saturate(1.4); backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid transparent; transition: border-color 0.3s, background 0.3s, transform 0.5s var(--ease);
}
.nav.scrolled { border-bottom-color: var(--border); background: rgba(8, 9, 18, 0.78); }
html.js:not(.no-intro):not(.intro-done) .nav { transform: translateY(-110%); }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 700; letter-spacing: 0.01em; font-size: 1.1rem; }
.nav-links { display: flex; gap: 6px; margin-left: auto; }
.nav-links a { text-decoration: none; color: var(--dim); padding: 8px 12px; border-radius: 999px; transition: color 0.2s, background 0.2s; font-weight: 500; }
.nav-links a:hover { color: var(--text); background: rgba(255, 255, 255, 0.06); }

/* ---------- Secciones ---------- */
main { position: relative; }
main, .footer { transition: opacity 1.2s var(--ease); }
/* Durante la intro el contenido de la pagina no se ve (ni se puede tocar) */
html.js:not(.no-intro):not(.intro-done) main, html.js:not(.no-intro):not(.intro-done) .footer { opacity: 0; pointer-events: none; }
.section, .hero, .stats, .final { width: min(1180px, 92vw); margin-inline: auto; }
.section { padding: clamp(64px, 10vw, 120px) 0 0; }
.section-head { max-width: 720px; margin: 0 auto clamp(32px, 5vw, 56px); text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; margin: 0 0 14px; font-size: 0.8rem; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--info);
}
.eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 12px var(--ok); animation: blink 2.4s ease-in-out infinite; }
@keyframes blink { 50% { opacity: 0.35; } }
h1, h2, h3 { text-wrap: balance; }
h2 { font-size: clamp(1.9rem, 4.2vw, 3rem); line-height: 1.12; letter-spacing: -0.02em; margin: 0 0 14px; }
.lead { font-size: clamp(1.02rem, 1.6vw, 1.2rem); color: var(--dim); margin: 0; max-width: 62ch; }
.section-head .lead { margin-inline: auto; }
.center { text-align: center; margin-top: 36px; }

/* ---------- Hero ---------- */
.hero {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); align-items: center; gap: clamp(28px, 5vw, 64px);
  min-height: 100vh; padding: 120px 0 56px;
}
.hero-title { font-size: clamp(2.3rem, 5.2vw, 4.1rem); line-height: 1.04; letter-spacing: -0.035em; margin: 0 0 22px; }
.hero-title em {
  font-style: normal; white-space: nowrap;
  background: linear-gradient(100deg, #ff4f87, #b05cf6 45%, #5cc8ff); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; margin: 30px 0 28px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 8px 10px; list-style: none; margin: 0; padding: 0; }
.hero-points li {
  font-size: 0.86rem; color: var(--dim); padding: 6px 12px; border-radius: 999px;
  border: 1px solid var(--border); background: rgba(255, 255, 255, 0.03);
}
.hero-visual { position: relative; perspective: 1400px; }
.glow {
  position: absolute; inset: -8% 0; z-index: -1; filter: blur(60px); opacity: 0.85;
  background: radial-gradient(closest-side at 30% 40%, rgba(255, 79, 135, 0.45), transparent), radial-gradient(closest-side at 75% 60%, rgba(92, 200, 255, 0.4), transparent);
}
.shot {
  margin: 0; border-radius: 14px; overflow: hidden; background: var(--panel-solid);
  border: 1px solid var(--border-strong); box-shadow: 0 40px 90px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.03);
}
.shot-main { transform: rotateY(-7deg) rotateX(3deg); transition: transform 0.4s var(--ease); transform-style: preserve-3d; }
.shot-bar { display: flex; gap: 7px; padding: 10px 14px; background: rgba(255, 255, 255, 0.04); border-bottom: 1px solid var(--border); }
.shot-bar i { width: 10px; height: 10px; border-radius: 50%; background: rgba(255, 255, 255, 0.18); }
.shot-bar i:nth-child(1) { background: #ff5f57; } .shot-bar i:nth-child(2) { background: #febc2e; } .shot-bar i:nth-child(3) { background: #28c840; }
.shot img { width: 100%; }
.piano-card {
  position: absolute; left: -6%; bottom: -9%; width: min(420px, 70%); padding: 14px 16px 16px; border-radius: 16px;
  background: rgba(10, 12, 24, 0.86); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  border: 1px solid var(--border-strong); box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
}
.piano-head { display: flex; flex-direction: column; gap: 2px; margin-bottom: 10px; font-size: 0.78rem; color: var(--dim); }
.piano-head b { color: var(--text); font-size: 0.95rem; }
.piano { position: relative; display: flex; height: 84px; user-select: none; -webkit-user-select: none; touch-action: none; }
.piano .key {
  flex: 1; position: relative; border: 0; padding: 0; cursor: pointer; border-radius: 0 0 7px 7px; margin: 0 1px;
  background: linear-gradient(#f4f5fb, #cfd3e8); color: #0b0c16; transition: transform 0.06s, background 0.1s;
}
.piano .key.on, .piano .key:active { background: linear-gradient(#ff6a9a, #ff4f87); transform: translateY(2px); }
.piano .black {
  position: absolute; top: 0; width: 8.4%; height: 56%; z-index: 2; border: 0; padding: 0; cursor: pointer; border-radius: 0 0 5px 5px;
  background: linear-gradient(#262a44, #0b0c16); transform: translateX(-50%);
}
.piano .black.on, .piano .black:active { background: linear-gradient(#b05cf6, #7b3fe4); }

/* ---------- Cifras ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 10px; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: var(--border); }
.stat { padding: 28px 18px; text-align: center; background: rgba(10, 12, 24, 0.82); }
.stat b { display: block; font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -0.03em; line-height: 1.1;
  background: linear-gradient(120deg, #fff, var(--info)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat span { color: var(--dim); font-size: 0.92rem; }

/* ---------- Tarjetas ---------- */
.grid { display: grid; gap: 18px; }
.features { grid-template-columns: repeat(3, 1fr); }
.card {
  position: relative; padding: 26px 24px 28px; border-radius: var(--radius); background: var(--panel);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); border: 1px solid var(--border);
  transition: transform 0.35s var(--ease), border-color 0.3s, box-shadow 0.35s; overflow: hidden;
}
.card::before {
  content: ''; position: absolute; inset: 0; border-radius: inherit; opacity: 0; transition: opacity 0.35s; pointer-events: none;
  background: radial-gradient(420px 220px at var(--mx, 50%) var(--my, 0%), rgba(255, 79, 135, 0.16), transparent 70%);
}
.card:hover { transform: translateY(-5px); border-color: var(--border-strong); box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45); }
.card:hover::before { opacity: 1; }
.card h3 { margin: 16px 0 8px; font-size: 1.14rem; letter-spacing: -0.01em; }
.card p { margin: 0; color: var(--dim); font-size: 0.97rem; }
.ico {
  display: inline-grid; place-items: center; width: 46px; height: 46px; border-radius: 13px;
  background: linear-gradient(135deg, rgba(255, 79, 135, 0.22), rgba(92, 200, 255, 0.2)); border: 1px solid var(--border-strong);
}
.ico svg { width: 24px; height: 24px; fill: none; stroke: #fff; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* ---------- Cómo funciona ---------- */
.how-grid { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.3fr); gap: clamp(20px, 4vw, 48px); align-items: center; }
.how-tabs { display: flex; flex-direction: column; gap: 12px; }
.how-tab {
  display: flex; gap: 16px; align-items: flex-start; text-align: left; font: inherit; color: var(--text); cursor: pointer;
  padding: 18px 20px; border-radius: 16px; border: 1px solid var(--border); background: rgba(255, 255, 255, 0.03);
  transition: background 0.3s, border-color 0.3s, transform 0.3s var(--ease);
}
.how-tab:hover { background: rgba(255, 255, 255, 0.06); }
.how-tab.on { background: linear-gradient(135deg, rgba(255, 79, 135, 0.14), rgba(92, 200, 255, 0.1)); border-color: var(--border-strong); transform: translateX(6px); }
.how-tab .num {
  flex: none; display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; font-weight: 700;
  background: rgba(255, 255, 255, 0.08); border: 1px solid var(--border-strong);
}
.how-tab.on .num { background: linear-gradient(135deg, #ff4f87, #5cc8ff); color: #0b0c16; border-color: transparent; }
.how-tab b { display: block; font-size: 1.05rem; margin-bottom: 4px; }
.how-tab small { display: block; color: var(--dim); font-size: 0.92rem; line-height: 1.5; }
.how-shot img { transition: opacity 0.35s; }
.how-shot img.fade { opacity: 0; }

/* ---------- Proyectos ---------- */
.featured { grid-template-columns: repeat(auto-fit, minmax(min(100%, 360px), 560px)); justify-content: center; }
.cta-card {
  display: flex; flex-direction: column; justify-content: center; align-items: flex-start; gap: 12px; padding: 34px 30px; border-radius: var(--radius);
  border: 1px dashed var(--border-strong); background: radial-gradient(420px 260px at 100% 0%, rgba(92, 200, 255, 0.14), transparent 70%), rgba(255, 255, 255, 0.02);
}
.cta-card h3 { margin: 0; font-size: 1.4rem; letter-spacing: -0.01em; }
.cta-card p { margin: 0; color: var(--dim); }
.cta-card .btn { margin-top: 6px; }
.projects { grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 380px)); justify-content: center; }
.project {
  display: flex; flex-direction: column; gap: 14px; padding: 0 0 22px; border-radius: var(--radius); overflow: hidden;
  background: var(--panel); border: 1px solid var(--border); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  transition: transform 0.35s var(--ease), border-color 0.3s, box-shadow 0.35s;
}
.project:hover { transform: translateY(-6px); border-color: var(--border-strong); box-shadow: 0 28px 70px rgba(0, 0, 0, 0.5); }
.project .thumb { position: relative; aspect-ratio: 16 / 7; background: linear-gradient(180deg, #0b0d1c, #080915); border-bottom: 1px solid var(--border); }
.project canvas { width: 100%; height: 100%; display: block; }
.project .badge {
  position: absolute; top: 12px; left: 12px; padding: 3px 10px; border-radius: 999px; font-size: 0.74rem; font-weight: 700; letter-spacing: 0.06em;
  text-transform: uppercase; color: #0b0c16; background: linear-gradient(120deg, var(--warn), #ffb347);
}
.project .body { padding: 0 22px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.project h3 { margin: 0; font-size: 1.25rem; letter-spacing: -0.01em; }
.project .by { color: var(--dim); font-size: 0.88rem; }
.project .desc { color: var(--dim); font-size: 0.95rem; margin: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 0; padding: 0; list-style: none; }
.chips li { font-size: 0.78rem; padding: 3px 10px; border-radius: 999px; border: 1px solid var(--border); color: #c9cde6; background: rgba(255, 255, 255, 0.04); }
.project .actions { display: flex; gap: 10px; padding: 4px 22px 0; margin-top: auto; flex-wrap: wrap; }
.play {
  display: inline-flex; align-items: center; gap: 8px; cursor: pointer; font: inherit; font-weight: 600; color: var(--text);
  padding: 9px 16px; border-radius: 999px; border: 1px solid var(--border-strong); background: rgba(255, 255, 255, 0.05);
}
.play:hover { background: rgba(255, 255, 255, 0.12); }
.play.on { color: var(--accent); border-color: var(--accent); }
.empty {
  grid-column: 1 / -1; text-align: center; padding: 38px 20px; border-radius: var(--radius); color: var(--dim);
  border: 1px dashed var(--border-strong); background: rgba(255, 255, 255, 0.02);
}
.empty b { color: var(--text); }
.gallery-note { text-align: center; color: var(--dim); margin: 22px 0 0; }
.skeleton { border-radius: var(--radius); min-height: 280px; background: linear-gradient(100deg, rgba(255, 255, 255, 0.04) 20%, rgba(255, 255, 255, 0.09) 40%, rgba(255, 255, 255, 0.04) 60%); background-size: 220% 100%; animation: shimmer 1.6s linear infinite; }
@keyframes shimmer { to { background-position: -120% 0; } }

/* ---------- Cierre y pie ---------- */
.final {
  margin-top: clamp(70px, 10vw, 130px); padding: clamp(44px, 7vw, 84px) clamp(20px, 5vw, 60px); text-align: center; border-radius: 28px;
  border: 1px solid var(--border-strong);
  background: radial-gradient(700px 320px at 20% 0%, rgba(255, 79, 135, 0.28), transparent 65%), radial-gradient(700px 320px at 90% 100%, rgba(92, 200, 255, 0.24), transparent 65%), rgba(12, 14, 28, 0.8);
}
.final .lead { margin: 0 auto 28px; }
.footer { width: min(1180px, 92vw); margin: 70px auto 0; padding: 30px 0 46px; border-top: 1px solid var(--border); }
.footer-top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px; }
.footer nav { display: flex; flex-wrap: wrap; gap: 6px 22px; }
.footer nav a { color: var(--dim); text-decoration: none; }
.footer nav a:hover { color: var(--text); }
.credits { margin: 22px 0 0; color: #6f7595; font-size: 0.85rem; max-width: 90ch; }
.credits a { color: var(--dim); }
.noscript { text-align: center; padding: 16px; }

/* ---------- Revelado al hacer scroll ---------- */
.js .reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); transition-delay: var(--d, 0s); }
.js .reveal.in { opacity: 1; transform: none; }

/* ---------- INTRO ---------- */
.intro {
  position: fixed; inset: 0; z-index: 60; display: grid; place-items: center; text-align: center; padding: 24px;
  background: radial-gradient(900px 600px at 50% 40%, rgba(6, 7, 13, 0.1), rgba(6, 7, 13, 0.7)); transition: opacity 1.1s var(--ease), visibility 1.1s;
}
.intro { display: none; }
html.js:not(.no-intro) .intro { display: grid; }
.intro.leaving { opacity: 0; visibility: hidden; pointer-events: none; }
.intro.gone { display: none !important; }
.intro-inner { display: flex; flex-direction: column; align-items: center; gap: 6px; max-width: 760px; }
.logo-stage { position: relative; display: grid; place-items: center; width: clamp(190px, 32vmin, 290px); aspect-ratio: 1; margin-bottom: clamp(18px, 4vmin, 40px); }
.logo-big { width: 100%; height: 100%; overflow: visible; transform: scale(calc(1 + var(--pulse) * 0.09)); filter: drop-shadow(0 0 calc(26px + var(--pulse) * 60px) rgba(255, 79, 135, calc(0.45 + var(--pulse) * 0.5))); transition: filter 0.08s linear; }
.logo-tile { transform-box: fill-box; transform-origin: center; animation: tile-in 1.1s var(--ease) both; }
.logo-wave { stroke-dasharray: 70; stroke-dashoffset: 70; animation: draw 1.6s 0.5s var(--ease) forwards; }
@keyframes tile-in { from { transform: scale(0.2) rotate(-18deg); opacity: 0; } to { transform: none; opacity: 1; } }
@keyframes draw { to { stroke-dashoffset: 0; } }
.logo-wave.live { stroke-dasharray: none; stroke-dashoffset: 0; animation: none; }
.ring { position: absolute; inset: 0; border-radius: 28%; border: 1.5px solid rgba(255, 255, 255, 0.35); opacity: 0; transform: scale(1); pointer-events: none; }
.intro.playing .ring { animation: ring 3.2s ease-out infinite; }
.intro.playing .r2 { animation-delay: 1.05s; } .intro.playing .r3 { animation-delay: 2.1s; }
@keyframes ring { 0% { opacity: 0.55; transform: scale(1); border-color: rgba(255, 79, 135, 0.8); } 100% { opacity: 0; transform: scale(2.3); border-color: rgba(92, 200, 255, 0.1); } }
.intro-title { margin: 0; font-size: clamp(3rem, 11vw, 7rem); line-height: 1; letter-spacing: -0.04em; font-weight: 800; display: flex; }
.intro-title span { display: inline-block; opacity: 0; transform: translateY(40px) scale(0.9); animation: rise 0.9s var(--ease) forwards;
  background: linear-gradient(100deg, #fff 10%, #ffb3cf 45%, #9ad8ff 90%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.intro-title span:nth-child(1) { animation-delay: 0.7s; } .intro-title span:nth-child(2) { animation-delay: 0.85s; } .intro-title span:nth-child(3) { animation-delay: 1s; }
@keyframes rise { to { opacity: 1; transform: none; } }
.intro-sub { margin: 4px 0 22px; font-size: clamp(1rem, 2.4vw, 1.3rem); color: #c9cde6; opacity: 0; animation: rise 0.9s 1.25s var(--ease) forwards; }
.intro.playing .intro-now { margin: 22px 0 0; color: var(--dim); min-height: 1.6em; opacity: 0; transition: opacity 0.8s; }
.intro-now.show { opacity: 1; }
.intro-now b { color: var(--text); }
.intro-progress { width: min(340px, 70vw); height: 3px; margin-top: 10px; border-radius: 3px; background: rgba(255, 255, 255, 0.1); overflow: hidden; opacity: 0; transition: opacity 0.6s; }
.intro-progress.on { opacity: 1; }
.intro.playing .intro-progress { opacity: 1; }
.intro-progress i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--accent), var(--info)); }

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  .hero { grid-template-columns: 1fr; min-height: auto; padding-top: 110px; }
  .hero-copy { text-align: center; }
  .hero-copy .lead { margin-inline: auto; }
  .cta-row, .hero-points { justify-content: center; }
  .piano-card { position: relative; left: auto; bottom: auto; width: min(460px, 100%); margin: -28px auto 0; }
  .shot-main { transform: none; }
  .features { grid-template-columns: repeat(2, 1fr); }
  .how-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .nav-links { display: none; }
  .nav .btn-sm { margin-left: auto; }
}
@media (max-width: 640px) {
  .features { grid-template-columns: 1fr; }
  .nav { gap: 10px; }
  .how-tab.on { transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-delay: 0s !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .js .reveal { opacity: 1; transform: none; }
  .intro-title span, .intro-sub { opacity: 1; transform: none; }
  .logo-wave { stroke-dashoffset: 0; }
  .shot-main { transform: none; }
}