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

:root {
  --bg: #0D0D0F;
  --bg2: #131318;
  --bg3: #1A1A22;
  --accent: #FF4D2E;
  --accent-dim: rgba(255, 77, 46, 0.12);
  --text: #F2F0EC;
  --text-dim: rgba(242, 240, 236, 0.5);
  --text-muted: rgba(242, 240, 236, 0.25);
  --border: rgba(242, 240, 236, 0.08);
  --font-display: 'Bebas Neue', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --radius: 8px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* HERO */
.hero {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 60px;
  align-items: center;
  padding: 100px 80px 80px;
  min-height: 90vh;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 60% at 70% 40%, rgba(255, 77, 46, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner { max-width: 560px; }

.hero-label {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(72px, 8vw, 120px);
  line-height: 0.9;
  color: var(--text);
  margin-bottom: 28px;
  letter-spacing: 0.01em;
}

.hero-apart { color: var(--accent); }

.hero-sub {
  font-size: 17px;
  font-weight: 300;
  color: var(--text-dim);
  max-width: 420px;
  margin-bottom: 48px;
  line-height: 1.7;
}

.hero-stat-row {
  display: flex;
  align-items: center;
  gap: 32px;
}

.hero-stat { display: flex; flex-direction: column; gap: 4px; }

.hero-stat-num {
  font-family: var(--font-display);
  font-size: 48px;
  color: var(--accent);
  line-height: 1;
}

.hero-stat-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-weight: 500;
}

.hero-stat-sep {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* Hero Visual — ring diagram */
.hero-visual {
  position: relative;
  width: 360px;
  height: 360px;
}

.hero-ring {
  position: absolute;
  inset: 0;
  border: 1.5px solid var(--border);
  border-radius: 50%;
  animation: spin 40s linear infinite;
}

.hero-ring::before {
  content: '';
  position: absolute;
  inset: 40px;
  border: 1px dashed var(--border);
  border-radius: 50%;
  animation: spin 25s linear infinite reverse;
}

.hero-ring::after {
  content: '';
  position: absolute;
  inset: 80px;
  border: 1px solid var(--accent-dim);
  border-radius: 50%;
  animation: spin 18s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.ring-label {
  position: absolute;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.ring-top { top: -6px; left: 50%; transform: translateX(-50%); }
.ring-right { right: -6px; top: 50%; transform: translateY(-50%); }
.ring-bottom { bottom: -6px; left: 50%; transform: translateX(-50%); }
.ring-left { left: -6px; top: 50%; transform: translateY(-50%); }

.ring-core {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 120px;
  height: 120px;
  background: var(--bg2);
  border: 1.5px solid var(--accent);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.ring-core-icon {
  width: 32px;
  height: 32px;
  background: var(--accent);
  border-radius: 50%;
}

.ring-core-text {
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 0.1em;
  color: var(--accent);
}

/* MANIFESTO */
.manifesto {
  padding: 100px 80px;
  border-top: 1px solid var(--border);
}

.manifesto-inner { max-width: 700px; }

.manifesto-mark {
  font-size: 32px;
  color: var(--accent);
  margin-bottom: 20px;
  line-height: 1;
}

.manifesto-quote {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.1;
  color: var(--text);
  margin-bottom: 32px;
  letter-spacing: 0.01em;
}

.manifesto-body {
  font-size: 16px;
  color: var(--text-dim);
  max-width: 580px;
  line-height: 1.8;
}

/* FEATURES */
.features {
  padding: 100px 80px;
  background: var(--bg2);
  border-top: 1px solid var(--border);
}

.features-header { margin-bottom: 64px; }

.features-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
  border: 1px solid var(--accent-dim);
  padding: 4px 12px;
  border-radius: 20px;
}

.features-title {
  font-family: var(--font-display);
  font-size: clamp(36px, 4vw, 56px);
  line-height: 1.05;
  color: var(--text);
  letter-spacing: 0.01em;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.feature-card {
  background: var(--bg2);
  padding: 40px 36px;
  transition: background 0.2s;
}

.feature-card:hover { background: var(--bg3); }

.feature-icon {
  width: 52px;
  height: 52px;
  background: var(--accent-dim);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-name {
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--text);
  margin-bottom: 10px;
  letter-spacing: 0.03em;
}

.feature-desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
}

/* STACK */
.stack {
  padding: 100px 80px;
  border-top: 1px solid var(--border);
}

.stack-inner { max-width: 900px; }

.stack-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 52px);
  color: var(--text);
  margin-bottom: 60px;
  letter-spacing: 0.01em;
}

.stack-visual {
  position: relative;
  height: 360px;
  margin-bottom: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.stack-center {
  width: 140px;
  height: 140px;
  background: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}

.stack-center-inner { text-align: center; }

.stack-center-label {
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--bg);
  letter-spacing: 0.1em;
}

.stack-journal {
  position: absolute;
  top: 20px;
  left: 80px;
  width: 200px;
  height: 90px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
}

.stack-workout {
  position: absolute;
  bottom: 40px;
  right: 80px;
  width: 200px;
  height: 90px;
  background: var(--bg2);
  border: 1px solid var(--accent-dim);
  border-radius: var(--radius);
  padding: 16px 20px;
}

.stack-meals {
  position: absolute;
  top: 50%;
  right: 40px;
  transform: translateY(-50%);
  width: 200px;
  height: 90px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
}

.stack-node-title {
  font-family: var(--font-display);
  font-size: 14px;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}

.stack-node-data {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 4px;
}

.stack-node-data strong { color: var(--text); }

.stack-node-time {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.stack-caption {
  font-size: 15px;
  color: var(--text-dim);
  max-width: 560px;
  line-height: 1.8;
}

/* CLOSING */
.closing {
  padding: 120px 80px;
  background: var(--bg2);
  border-top: 1px solid var(--border);
  text-align: center;
}

.closing-inner { max-width: 700px; margin: 0 auto; }

.closing-rule {
  width: 40px;
  height: 2px;
  background: var(--accent);
  margin: 0 auto 40px;
}

.closing-headline {
  font-family: var(--font-display);
  font-size: clamp(40px, 5vw, 72px);
  line-height: 1.05;
  color: var(--text);
  margin-bottom: 28px;
  letter-spacing: 0.01em;
}

.closing-cta {
  display: inline-block;
  margin-top: 40px;
  background: var(--accent);
  color: #fff;
  padding: 16px 40px;
  border-radius: var(--radius);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: opacity 0.15s;
}
.closing-cta:hover { opacity: 0.88; }

.closing-sub {
  font-size: 17px;
  color: var(--text-dim);
  line-height: 1.8;
  max-width: 560px;
  margin: 0 auto;
}

/* FOOTER */
footer {
  padding: 32px 80px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

footer p {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

footer span {
  font-family: var(--font-display);
  color: var(--accent);
  letter-spacing: 0.1em;
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    padding: 60px 32px 60px;
    min-height: unset;
  }
  .hero-visual { display: none; }
  .hero-headline { font-size: 72px; }
  .features-grid { grid-template-columns: 1fr; }
  .manifesto, .features, .stack, .closing { padding: 60px 32px; }
  footer { padding: 24px 32px; }
  .stack-visual { height: auto; }
  .stack-journal, .stack-workout, .stack-meals {
    position: static;
    transform: none;
    margin-bottom: 16px;
    width: 100%;
  }
  .stack-visual { display: flex; flex-direction: column; }
}

@media (max-width: 480px) {
  .hero-headline { font-size: 56px; }
  .hero-stat-row { gap: 20px; }
  .hero-stat-num { font-size: 36px; }
  .closing-headline { font-size: 40px; }
}