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

:root {
  --bg:    #0D0F14;
  --bg2:   #12151C;
  --line:  rgba(255,255,255,0.07);
  --text:  #E8EAF0;
  --muted: #6B7280;
  --accent: oklch(75% 0.18 10);
  --mono:  'DM Mono', monospace;
  --sans:  'Inter', sans-serif;
}

html { scroll-behavior: smooth; }

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

nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  padding: 0 clamp(1.5rem, 5vw, 4rem);
  height: 64px;
  border-bottom: 1px solid var(--line);
  background: rgba(13,15,20,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.logo-wordmark {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  color: var(--text);
}

section {
  padding: clamp(5rem, 10vw, 8rem) clamp(1.5rem, 5vw, 4rem);
}

.container {
  max-width: 1160px;
  margin: 0 auto;
  width: 100%;
}

#hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: calc(64px + clamp(4rem, 8vw, 7rem));
  padding-bottom: clamp(4rem, 8vw, 7rem);
  border-bottom: 1px solid var(--line);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
}
.tag::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

h1 {
  font-family: var(--mono);
  font-weight: 400;
  font-size: clamp(2.2rem, 4.5vw, 3.8rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text);
  text-wrap: pretty;
}

h1 em {
  font-style: italic;
  color: var(--accent);
}

.hero-sub {
  margin-top: 1.5rem;
  font-size: 1.05rem;
  font-weight: 300;
  color: var(--muted);
  max-width: 480px;
  line-height: 1.75;
}

.fade-in {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Method Section ── */
#method {
  border-bottom: 1px solid var(--line);
}

.method-header {
  margin-bottom: 4rem;
}

.method-header h2 {
  font-family: var(--mono);
  font-weight: 400;
  font-size: clamp(1.6rem, 3vw, 2.6rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-top: 1rem;
  text-wrap: pretty;
}

.method-header h2 em {
  font-style: italic;
  color: var(--accent);
}

.method-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0;
  border: 1px solid var(--line);
  border-radius: 2px;
}

.method-step {
  display: flex;
  align-items: flex-start;
  gap: 0;
  padding: 2rem 1.75rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background 0.2s ease;
}

.method-step:hover {
  background: var(--bg2);
}

.step-letter {
  font-family: var(--mono);
  font-size: clamp(2.8rem, 4vw, 3.6rem);
  font-weight: 500;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.04em;
  flex-shrink: 0;
  width: 1ch;
  margin-right: 0.1em;
}

.step-body {
  padding-top: 0.15em;
}

.step-name {
  font-family: var(--mono);
  font-size: clamp(1.4rem, 2vw, 1.8rem);
  font-weight: 400;
  color: var(--text);
  line-height: 1;
  letter-spacing: -0.04em;
  margin-bottom: 0.75rem;
  opacity: 0.35;
}

.step-desc {
  font-size: 0.875rem;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.65;
  text-wrap: pretty;
}

.method-tagline {
  margin-top: 3.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.tagline-flow {
  font-family: var(--mono);
  font-size: clamp(0.72rem, 1.2vw, 0.85rem);
  letter-spacing: 0.06em;
  color: var(--accent);
  opacity: 0.7;
}

.method-tagline p {
  font-family: var(--mono);
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  font-weight: 400;
  color: var(--muted);
  letter-spacing: -0.01em;
}

footer {
  border-top: 1px solid var(--line);
  padding: 2rem clamp(1.5rem, 5vw, 4rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copy {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}