:root {
  /* Brand palette — matches the Spirograph Alpha app */
  --indigo: #5B4BFF;
  --indigo-bright: #9E8CFF;
  --cyan: #00B4D8;
  --cyan-bright: #67E8F9;
  --pink: #FF375F;
  --pink-bright: #FF6FA5;
  --green: #30D158;

  --bg: #0B0B12;
  --bg-2: #08080E;
  --surface: #16161F;
  --card: #14141D;
  --border: rgba(255,255,255,0.08);
  --text: #F4F3FA;
  --text-dim: #A8A6B8;

  --grad-brand: linear-gradient(120deg, var(--indigo-bright) 0%, var(--cyan-bright) 50%, var(--pink-bright) 100%);
  --grad-brand-strong: linear-gradient(120deg, var(--indigo) 0%, var(--cyan) 50%, var(--pink) 100%);

  --radius: 22px;
  --radius-sm: 14px;
  --maxw: 1140px;
  --shadow: 0 24px 60px -20px rgba(0,0,0,0.7);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  font-synthesis: none;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Animated ambient background blobs */
.bg-orbs { position: fixed; inset: 0; z-index: -2; overflow: hidden; pointer-events: none; }
.orb { position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.5; animation: drift 22s var(--ease) infinite alternate; }
.orb.a { width: 520px; height: 520px; background: radial-gradient(circle, var(--indigo), transparent 70%); top: -160px; left: -120px; }
.orb.b { width: 440px; height: 440px; background: radial-gradient(circle, var(--cyan), transparent 70%); top: 30%; right: -140px; animation-delay: -6s; }
.orb.c { width: 480px; height: 480px; background: radial-gradient(circle, var(--pink), transparent 70%); bottom: -180px; left: 25%; animation-delay: -12s; }
.bg-grid { position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 46px 46px; mask-image: radial-gradient(ellipse at 50% 0%, #000 30%, transparent 80%); }

@keyframes drift {
  0%   { transform: translate(0,0) scale(1); }
  100% { transform: translate(40px, 60px) scale(1.15); }
}

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

/* ---------- Nav ---------- */
header.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(160%) blur(18px);
  -webkit-backdrop-filter: saturate(160%) blur(18px);
  background: rgba(11,11,18,0.6);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 700; font-size: 1.12rem; letter-spacing: -0.01em; text-decoration: none; color: var(--text); }
.brand .mark { width: 34px; height: 34px; flex: none; }
.brand .mark svg { width: 100%; height: 100%; display: block; animation: spin 16s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.brand b { background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { color: var(--text-dim); text-decoration: none; font-size: 0.95rem; font-weight: 500; transition: color 0.25s; }
.nav-links a:hover { color: var(--text); }
.nav-cta { display: inline-flex; }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; width: 42px; height: 42px; border-radius: 12px; }
.nav-toggle span { display: block; width: 22px; height: 2px; margin: 4px auto; background: var(--text); border-radius: 2px; transition: transform 0.3s, opacity 0.3s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; gap: 9px; font-weight: 600; font-size: 0.98rem; padding: 13px 24px; border-radius: 999px; text-decoration: none; cursor: pointer; border: 1px solid transparent; transition: transform 0.25s var(--ease), box-shadow 0.3s, background 0.3s; white-space: nowrap; }
.btn-primary { color: #0B0B12; background: var(--grad-brand); box-shadow: 0 12px 30px -8px rgba(91,75,255,0.7); }
.btn-primary:hover { transform: translateY(-3px) scale(1.02); box-shadow: 0 18px 40px -8px rgba(103,232,249,0.6); }
.btn-ghost { color: var(--text); background: rgba(255,255,255,0.05); border-color: var(--border); }
.btn-ghost:hover { transform: translateY(-3px); background: rgba(255,255,255,0.1); }
.btn:active { transform: translateY(-1px) scale(0.99); }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 72px 0 90px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 40px; align-items: center; }
.pill { display: inline-flex; align-items: center; gap: 8px; font-size: 0.82rem; font-weight: 600; color: var(--cyan-bright); background: rgba(103,232,249,0.1); border: 1px solid rgba(103,232,249,0.25); padding: 7px 14px; border-radius: 999px; margin-bottom: 22px; }
.pill .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 10px var(--green); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }
h1.hero-title { font-size: clamp(2.4rem, 5.2vw, 4rem); line-height: 1.04; letter-spacing: -0.03em; font-weight: 800; }
h1.hero-title .grad { background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; color: transparent; background-size: 200% auto; animation: shimmer 6s linear infinite; }
@keyframes shimmer { to { background-position: 200% center; } }
.hero p.lead { margin: 22px 0 30px; color: var(--text-dim); font-size: 1.14rem; max-width: 540px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 34px; margin-top: 42px; }
.hero-stats .num { font-size: 1.7rem; font-weight: 800; background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-stats .lbl { font-size: 0.85rem; color: var(--text-dim); }

/* Phone mockup with live canvas */
.phone { position: relative; width: 300px; margin: 0 auto; aspect-ratio: 300 / 610; border-radius: 46px; padding: 12px;
  background: linear-gradient(160deg, #20202c, #0c0c12); border: 1px solid rgba(255,255,255,0.1);
  box-shadow: var(--shadow), 0 0 0 2px rgba(0,0,0,0.4) inset; animation: floaty 6s var(--ease) infinite alternate; }
@keyframes floaty { from { transform: translateY(-10px) rotate(-1deg); } to { transform: translateY(10px) rotate(1deg); } }
.phone-screen { position: relative; width: 100%; height: 100%; border-radius: 36px; overflow: hidden; background: var(--bg-2); display: flex; flex-direction: column; }
.phone-notch { position: absolute; top: 10px; left: 50%; transform: translateX(-50%); width: 110px; height: 26px; background: #000; border-radius: 16px; z-index: 4; }
.phone-topbar { display: flex; align-items: center; gap: 8px; padding: 16px 16px 8px; font-weight: 700; font-size: 0.9rem; }
.phone-topbar .logo { width: 18px; height: 18px; }
.phone-topbar .ttl { background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; color: transparent; }
.phone-canvas-wrap { flex: 1; position: relative; margin: 4px 12px; border-radius: 20px; overflow: hidden; border: 1px solid var(--border); background: radial-gradient(circle at 50% 40%, #12121c, #08080e); }
.phone-canvas-wrap canvas { width: 100%; height: 100%; display: block; }
.phone-controls { padding: 10px 14px 12px; display: grid; gap: 8px; }
.phone-slider { height: 8px; border-radius: 8px; background: rgba(255,255,255,0.08); position: relative; overflow: hidden; }
.phone-slider::after { content: ""; position: absolute; inset: 0; width: var(--w,60%); background: var(--grad-brand); border-radius: 8px; }
.phone-ad { margin: 0 12px 12px; height: 34px; border-radius: 10px; border: 1px dashed rgba(255,255,255,0.18); display: flex; align-items: center; justify-content: center; font-size: 0.66rem; letter-spacing: 0.08em; color: var(--text-dim); text-transform: uppercase; }

/* ---------- Sections ---------- */
section { padding: 80px 0; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 54px; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.18em; font-size: 0.78rem; font-weight: 700; color: var(--cyan-bright); }
.section-head h2 { font-size: clamp(1.9rem, 3.6vw, 2.7rem); letter-spacing: -0.02em; margin: 12px 0 14px; font-weight: 800; }
.section-head p { color: var(--text-dim); font-size: 1.05rem; }

.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { background: linear-gradient(180deg, rgba(255,255,255,0.045), rgba(255,255,255,0.015)); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; position: relative; overflow: hidden; transition: transform 0.4s var(--ease), border-color 0.4s; }
.card:hover { transform: translateY(-8px); border-color: rgba(158,140,255,0.4); }
.card::before { content:""; position: absolute; inset: 0; background: var(--grad-brand); opacity: 0; transition: opacity 0.4s; mix-blend-mode: overlay; }
.card:hover::before { opacity: 0.12; }
.card .ico { width: 52px; height: 52px; border-radius: 15px; display: grid; place-items: center; font-size: 1.5rem; margin-bottom: 16px; background: rgba(255,255,255,0.06); border: 1px solid var(--border); }
.card h3 { font-size: 1.18rem; margin-bottom: 8px; letter-spacing: -0.01em; }
.card p { color: var(--text-dim); font-size: 0.96rem; }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; counter-reset: step; }
.step { text-align: center; padding: 10px; }
.step .n { width: 60px; height: 60px; margin: 0 auto 16px; border-radius: 50%; display: grid; place-items: center; font-weight: 800; font-size: 1.3rem; color: #0b0b12; background: var(--grad-brand); box-shadow: 0 10px 26px -8px rgba(91,75,255,0.6); }
.step h3 { margin-bottom: 6px; }
.step p { color: var(--text-dim); font-size: 0.95rem; }

/* CTA */
.cta-band { text-align: center; background: linear-gradient(135deg, rgba(91,75,255,0.18), rgba(255,55,95,0.14)); border: 1px solid var(--border); border-radius: 30px; padding: 56px 28px; position: relative; overflow: hidden; }
.cta-band h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); font-weight: 800; letter-spacing: -0.02em; }
.cta-band p { color: var(--text-dim); margin: 12px auto 26px; max-width: 520px; }

/* ---------- Footer ---------- */
footer.site { border-top: 1px solid var(--border); padding: 48px 0 40px; margin-top: 30px; }
.foot-grid { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 26px; align-items: flex-start; }
.foot-links { display: flex; gap: 26px; flex-wrap: wrap; }
.foot-links a { color: var(--text-dim); text-decoration: none; font-size: 0.93rem; transition: color 0.25s; }
.foot-links a:hover { color: var(--text); }
.foot-note { color: var(--text-dim); font-size: 0.85rem; margin-top: 22px; }

/* ---------- Legal / article pages ---------- */
.legal { padding: 56px 0 30px; }
.legal-wrap { max-width: 820px; margin: 0 auto; background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.012)); border: 1px solid var(--border); border-radius: var(--radius); padding: clamp(26px, 5vw, 54px); box-shadow: var(--shadow); }
.legal-wrap h1 { font-size: clamp(2rem, 4vw, 2.8rem); letter-spacing: -0.02em; margin-bottom: 6px; }
.legal-wrap h1 .grad { background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; color: transparent; }
.legal-meta { color: var(--text-dim); font-size: 0.9rem; margin-bottom: 30px; }
.legal-wrap h2 { margin: 34px 0 10px; font-size: 1.35rem; letter-spacing: -0.01em; padding-left: 14px; border-left: 3px solid transparent; border-image: var(--grad-brand) 1; }
.legal-wrap h3 { margin: 22px 0 8px; font-size: 1.08rem; color: var(--cyan-bright); }
.legal-wrap p, .legal-wrap li { color: var(--text-dim); font-size: 1rem; }
.legal-wrap ul, .legal-wrap ol { margin: 10px 0 10px 22px; }
.legal-wrap li { margin-bottom: 7px; }
.legal-wrap a { color: var(--indigo-bright); }
.legal-wrap strong { color: var(--text); }
.callout { background: rgba(103,232,249,0.08); border: 1px solid rgba(103,232,249,0.22); border-radius: var(--radius-sm); padding: 16px 18px; margin: 18px 0; color: var(--text-dim); font-size: 0.95rem; }
.toc { display: flex; flex-wrap: wrap; gap: 10px; margin: 24px 0 8px; }
.toc a { font-size: 0.85rem; color: var(--text-dim); text-decoration: none; padding: 6px 12px; border: 1px solid var(--border); border-radius: 999px; transition: all 0.25s; }
.toc a:hover { color: var(--text); border-color: rgba(158,140,255,0.5); }

/* ---------- Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-actions, .hero-stats { justify-content: center; }
  .hero p.lead { margin-left: auto; margin-right: auto; }
  .phone { order: -1; }
  .features, .steps { grid-template-columns: 1fr; }
  .nav-links { position: fixed; inset: 68px 0 auto 0; flex-direction: column; gap: 0; background: rgba(11,11,18,0.96); backdrop-filter: blur(16px); border-bottom: 1px solid var(--border); padding: 8px 0 16px; transform: translateY(-12px); opacity: 0; pointer-events: none; transition: opacity 0.3s, transform 0.3s; }
  .nav-links.open { opacity: 1; transform: none; pointer-events: auto; }
  .nav-links a { padding: 14px 24px; width: 100%; }
  .nav-links .nav-cta { margin: 10px 24px 0; }
  .nav-toggle { display: block; }
}
@media (max-width: 560px) {
  .hero-stats { gap: 22px; }
  section { padding: 60px 0; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}