/* ═══════════════════════════════════════════════
   GROVEN · GLOBAL STYLES
   ═══════════════════════════════════════════════ */

:root {
  --dark:        #111C17;
  --forest:      #1B4332;
  --mid:         #2D6A4F;
  --leaf:        #40916C;
  --mint:        #74C69D;
  --mint-faint:  rgba(116,198,157,0.6);
  --cream:       #F8F5F0;
  --cream-dark:  #EDE9E1;
  --sand:        #D4A373;
  --sand-dark:   #B8864A;
  --off-white:   #FAFAF7;
  --text-dark:   #1A2620;
  --text-mid:    #374151;
  --text-light:  #6B7280;

  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body:    'Outfit', system-ui, sans-serif;

  --radius:  0.5rem;
  --radius-lg: 1rem;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:  cubic-bezier(0.7, 0, 0.84, 0);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background: var(--cream);
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ── GRAIN TEXTURE ── */
.grain {
  pointer-events: none;
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
}
.grain-dark { opacity: 0.045; }

/* ── CONTAINER ── */
.container {
  width: min(72rem, 92vw);
  margin: 0 auto;
}

/* ── SECTIONS ── */
.section {
  position: relative;
  padding: clamp(5rem, 10vw, 9rem) 0;
  overflow: hidden;
}
.section-dark   { background: var(--dark); color: #fff; }
.section-forest { background: var(--forest); color: #fff; }
.section-cream  { background: var(--cream); }

.section-label {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--leaf);
  margin-bottom: 1.25rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 5vw, 4.5rem);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: 2.5rem;
  color: var(--text-dark);
}
.section-title em { font-style: italic; color: var(--leaf); }
.section-title-light { color: #fff; }
.section-title-light em { color: var(--mint); }

.section-intro {
  font-size: 1.05rem;
  color: var(--text-mid);
  line-height: 1.75;
  margin-bottom: 3.5rem;
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.85rem 1.8rem;
  border-radius: 3rem;
  transition: all 0.25s var(--ease-out);
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: var(--mint);
  color: var(--dark);
}
.btn-primary:hover {
  background: #58c18a;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(116,198,157,0.35);
}
.btn-ghost {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.25);
}
.btn-ghost:hover {
  border-color: var(--mint);
  color: var(--mint);
  transform: translateY(-2px);
}

/* ══════════════════════════════════════════════
   NAVIGATION
═══════════════════════════════════════════════ */
#nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 1.1rem clamp(1.5rem, 4vw, 3rem);
  background: transparent;
  transition: background 0.35s, backdrop-filter 0.35s, box-shadow 0.35s;
}
#nav.scrolled {
  background: rgba(17, 28, 23, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06);
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 500;
  color: #fff;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}
.nav-links {
  display: flex;
  list-style: none;
  gap: 1.8rem;
  margin-left: auto;
}
.nav-links a {
  font-size: 0.83rem;
  font-weight: 400;
  color: rgba(255,255,255,0.65);
  letter-spacing: 0.04em;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--mint); }
.nav-cta {
  font-size: 0.83rem;
  font-weight: 500;
  color: var(--mint);
  padding: 0.4rem 1rem;
  border: 1px solid rgba(116,198,157,0.35);
  border-radius: 2rem;
  transition: all 0.2s;
  flex-shrink: 0;
}
.nav-cta:hover { background: rgba(116,198,157,0.1); border-color: var(--mint); }
.nav-toggle { display: none; }

/* ══════════════════════════════════════════════
   HERO
═══════════════════════════════════════════════ */
#hero {
  position: relative;
  min-height: 100svh;
  background: var(--dark);
  display: flex;
  align-items: center;
  overflow: hidden;
}
#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  opacity: 0.6;
}
.hero-inner {
  position: relative;
  z-index: 2;
  width: min(72rem, 92vw);
  margin: 0 auto;
  padding-top: 6rem;
}
.hero-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mint);
  margin-bottom: 2rem;
}
.hero-title {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 2rem;
}
.hero-title-main {
  font-family: var(--font-display);
  font-size: clamp(5rem, 13vw, 10.5rem);
  font-weight: 300;
  line-height: 0.92;
  letter-spacing: -0.04em;
  color: #fff;
}
.hero-title-sub {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5.5vw, 4.5rem);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--mint);
  font-style: italic;
  padding-left: 0.15em;
}
.hero-body {
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  color: rgba(255,255,255,0.55);
  line-height: 1.7;
  margin-bottom: 2.5rem;
}
.hero-ctas {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}
.hero-meta {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.35);
  flex-wrap: wrap;
}
.hero-meta strong { color: rgba(255,255,255,0.55); font-weight: 400; }
.hero-meta .sep { color: rgba(255,255,255,0.2); }

/* scroll hint */
.hero-scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  right: clamp(1.5rem, 4vw, 3rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  z-index: 2;
}
.hero-scroll-hint span {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.25);
  writing-mode: vertical-rl;
}
.scroll-line {
  width: 1px;
  height: 3rem;
  background: linear-gradient(to bottom, rgba(255,255,255,0.2), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.2); }
}

/* ══════════════════════════════════════════════
   PROBLEM
═══════════════════════════════════════════════ */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5px;
  background: var(--cream-dark);
  border: 1.5px solid var(--cream-dark);
  margin-top: 3rem;
}
.problem-card {
  background: var(--off-white);
  padding: 2.5rem 2rem;
  position: relative;
}
.problem-num {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 300;
  color: var(--cream-dark);
  line-height: 1;
  margin-bottom: 1rem;
  letter-spacing: -0.05em;
}
.problem-card h3 {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--forest);
  margin-bottom: 0.85rem;
  line-height: 1.3;
}
.problem-card p {
  font-size: 0.93rem;
  color: var(--text-mid);
  line-height: 1.7;
}

/* ══════════════════════════════════════════════
   SEED → BRANCH → FOREST
═══════════════════════════════════════════════ */
.sbf-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 1.5rem;
  align-items: start;
  margin-top: 1rem;
}
.sbf-arrow {
  font-size: 1.5rem;
  color: var(--mint);
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 3.5rem;
  opacity: 0.6;
}
.sbf-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(116,198,157,0.15);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-color 0.3s;
}
.sbf-card:hover { border-color: rgba(116,198,157,0.35); }
.sbf-icon {
  font-size: 2.25rem;
  margin-bottom: 1rem;
}
.sbf-label {
  font-family: var(--font-body);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mint);
  margin-bottom: 0.85rem;
}
.sbf-body {
  font-size: 0.93rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}
.sbf-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.sbf-list li {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.45);
  padding-left: 1rem;
  position: relative;
  line-height: 1.5;
}
.sbf-list li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--mint);
  opacity: 0.6;
}

/* ══════════════════════════════════════════════
   BRANCH TYPOLOGY
═══════════════════════════════════════════════ */
.type-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 1rem;
}
.type-card {
  background: var(--off-white);
  border: 1.5px solid var(--cream-dark);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out);
}
.type-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(27,67,50,0.1);
}
.type-card-contested {
  grid-column: 3;
  background: #FDF6EC;
  border-color: var(--sand);
}
.type-tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #fff;
  padding: 0.25rem 0.65rem;
  border-radius: 2rem;
  margin-bottom: 1rem;
}
.type-card p {
  font-size: 0.9rem;
  color: var(--text-mid);
  line-height: 1.65;
  margin-bottom: 0.85rem;
}
.type-example {
  font-size: 0.82rem;
  font-style: italic;
  color: var(--text-light);
  padding-left: 0.8rem;
  border-left: 2px solid var(--cream-dark);
}

/* ══════════════════════════════════════════════
   LLM ROLE
═══════════════════════════════════════════════ */
.llm-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 3rem;
}
.llm-col {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.06);
}
.llm-col-header {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 0.9rem 1.5rem;
}
.llm-col-does { background: var(--mid); color: #fff; }
.llm-col-doesnt { background: rgba(75,50,50,0.8); color: #FECACA; }
.llm-list {
  list-style: none;
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  background: rgba(255,255,255,0.04);
}
.llm-list li {
  font-size: 0.93rem;
  color: rgba(255,255,255,0.75);
  padding-left: 1.25rem;
  position: relative;
  line-height: 1.55;
}
.llm-list li::before {
  content: '●';
  position: absolute;
  left: 0;
  font-size: 0.45rem;
  top: 0.45em;
  color: var(--mint);
}
.llm-list-not li::before { color: #EF4444; content: '■'; }
.llm-principle {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-style: italic;
  color: var(--mint);
  text-align: center;
  padding: 1.5rem 0;
  opacity: 0.9;
}

/* ══════════════════════════════════════════════
   GOVERNANCE MODULE
═══════════════════════════════════════════════ */
.gov-states {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 48rem;
  margin-top: 1rem;
}
.gov-state {
  display: flex;
  gap: 1.75rem;
  align-items: flex-start;
  padding: 2rem 0;
  border-bottom: 1px solid var(--cream-dark);
}
.gov-state:last-child { border-bottom: none; }
.gov-state-indicator {
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  margin-top: 0.3rem;
  flex-shrink: 0;
  position: relative;
}
.gov-open    { background: var(--leaf); box-shadow: 0 0 0 4px rgba(64,145,108,0.15); }
.gov-ready   { background: var(--sand); box-shadow: 0 0 0 4px rgba(212,163,115,0.15); }
.gov-decided { background: var(--forest); box-shadow: 0 0 0 4px rgba(27,67,50,0.2); }
.gov-connector {
  font-size: 1.2rem;
  color: var(--cream-dark);
  padding: 0 0 0 0.35rem;
  margin: -0.75rem 0;
}
.gov-state-label {
  font-family: var(--font-body);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--forest);
  margin-bottom: 0.5rem;
}
.gov-state-content p {
  font-size: 0.95rem;
  color: var(--text-mid);
  line-height: 1.7;
}
.gov-note {
  font-size: 0.82rem;
  font-style: italic;
  color: var(--text-light);
  margin-top: 0.65rem;
}

/* ══════════════════════════════════════════════
   DIFFERENTIATION TABLE
═══════════════════════════════════════════════ */
.diff-table-wrap {
  overflow-x: auto;
  margin-top: 2.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.06);
}
.diff-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.diff-table th {
  background: rgba(255,255,255,0.06);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  padding: 0.9rem 1.25rem;
  text-align: left;
  white-space: nowrap;
}
.th-groven {
  background: rgba(64,145,108,0.15) !important;
  color: var(--mint) !important;
}
.diff-table td {
  padding: 0.85rem 1.25rem;
  border-top: 1px solid rgba(255,255,255,0.04);
  color: rgba(255,255,255,0.6);
  vertical-align: middle;
}
.diff-table tr:hover td { background: rgba(255,255,255,0.02); }
.diff-table td:first-child {
  color: rgba(255,255,255,0.85);
  font-weight: 500;
}
.td-no { color: rgba(255,255,255,0.25) !important; }
.td-partial { color: rgba(212,163,115,0.7) !important; }
.td-yes {
  color: var(--mint) !important;
  font-weight: 500;
  background: rgba(64,145,108,0.06);
}

/* ══════════════════════════════════════════════
   OPEN SOURCE
═══════════════════════════════════════════════ */
.oss-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 1rem;
}
.oss-card {
  background: var(--off-white);
  border: 1.5px solid var(--cream-dark);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s;
}
.oss-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(27,67,50,0.08);
}
.oss-icon {
  font-size: 1.6rem;
  margin-bottom: 1rem;
  color: var(--leaf);
  font-style: normal;
}
.oss-card h3 {
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--forest);
  margin-bottom: 0.65rem;
}
.oss-card p {
  font-size: 0.92rem;
  color: var(--text-mid);
  line-height: 1.7;
}

/* ══════════════════════════════════════════════
   CORPUS
═══════════════════════════════════════════════ */
.corpus-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}
.corpus-facts {
  border: 1px solid rgba(116,198,157,0.15);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.corpus-fact {
  display: flex;
  justify-content: space-between;
  padding: 0.9rem 1.25rem;
  gap: 1rem;
  border-bottom: 1px solid rgba(116,198,157,0.08);
}
.corpus-fact:last-child { border-bottom: none; }
.corpus-fact:nth-child(even) { background: rgba(255,255,255,0.03); }
.fact-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--mint);
}
.fact-val {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.65);
  text-align: right;
}

/* ══════════════════════════════════════════════
   ROADMAP
═══════════════════════════════════════════════ */
.roadmap-track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 3rem;
}
.roadmap-line {
  position: absolute;
  top: 0.45rem;
  left: 2%;
  right: 2%;
  height: 2px;
  background: var(--cream-dark);
  z-index: 0;
}
.roadmap-phase {
  position: relative;
  z-index: 1;
}
.phase-dot {
  width: 0.9rem;
  height: 0.9rem;
  border-radius: 50%;
  background: var(--cream-dark);
  border: 2px solid var(--cream-dark);
  margin-bottom: 0.75rem;
  position: relative;
  top: -2.7rem;
}
.phase-done   { background: var(--leaf); border-color: var(--leaf); }
.phase-active {
  background: var(--mint);
  border-color: var(--mint);
  box-shadow: 0 0 0 5px rgba(116,198,157,0.2);
  animation: activePulse 2s ease-in-out infinite;
}
.phase-future { background: transparent; border-color: var(--forest); }
@keyframes activePulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(116,198,157,0.15); }
  50%       { box-shadow: 0 0 0 8px rgba(116,198,157,0.08); }
}
.phase-label {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--leaf);
  margin-bottom: 0.25rem;
  margin-top: -2rem;
}
.phase-time {
  font-size: 0.72rem;
  color: var(--text-light);
  margin-bottom: 0.6rem;
}
.phase-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--forest);
  margin-bottom: 0.4rem;
  line-height: 1.3;
}
.phase-body {
  font-size: 0.8rem;
  color: var(--text-light);
  line-height: 1.55;
}

/* ══════════════════════════════════════════════
   CLOSING
═══════════════════════════════════════════════ */
.closing-section { min-height: 85vh; display: flex; align-items: center; }
#closing-canvas {
  position: absolute;
  inset: 0; width: 100%; height: 100%;
  opacity: 0.35;
}
.closing-inner {
  position: relative;
  z-index: 2;
  padding: 4rem 0;
}
.closing-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 5.5rem);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 1.5rem;
}
.closing-title em { font-style: italic; color: var(--mint); }
.closing-body {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.5);
  margin-bottom: 3.5rem;
  line-height: 1.7;
}
.closing-links {
  display: flex;
  gap: 3rem;
  flex-wrap: wrap;
  margin-bottom: 4rem;
}
.closing-link {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  transition: opacity 0.2s;
}
.closing-link:hover { opacity: 0.8; }
.cl-label {
  font-size: 1rem;
  font-weight: 600;
  color: var(--mint);
}
.cl-sub {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
}
.closing-seed {
  font-family: var(--font-display);
  font-size: 1rem;
  font-style: italic;
  color: rgba(255,255,255,0.2);
  letter-spacing: 0.05em;
}

/* ══════════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════════ */
.footer {
  background: #0A110D;
  padding: 1.25rem 0;
  border-top: 1px solid rgba(255,255,255,0.04);
}
.footer-inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.footer-logo {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: rgba(255,255,255,0.4);
  flex-shrink: 0;
}
.footer-copy {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.2);
  flex: 1;
  line-height: 1.5;
}
.footer-version {
  font-size: 0.68rem;
  color: rgba(255,255,255,0.15);
  flex-shrink: 0;
}

/* ══════════════════════════════════════════════
   SCROLL REVEAL ANIMATIONS
═══════════════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.75s var(--ease-out), transform 0.75s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ══════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .sbf-grid {
    grid-template-columns: 1fr;
  }
  .sbf-arrow { display: none; }
  .corpus-inner { grid-template-columns: 1fr; gap: 3rem; }
  .roadmap-track {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    margin-left: auto;
    padding: 4px;
  }
  .nav-toggle span {
    display: block;
    width: 22px; height: 2px;
    background: rgba(255,255,255,0.6);
    border-radius: 1px;
    transition: all 0.3s;
  }
  .nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(10,17,13,0.97);
    backdrop-filter: blur(12px);
    z-index: 99;
    justify-content: center;
    align-items: center;
    gap: 2rem;
  }
  .nav-links.mobile-open a { font-size: 1.3rem; color: rgba(255,255,255,0.8); }

  .problem-grid { grid-template-columns: 1fr; gap: 1px; }
  .type-grid { grid-template-columns: 1fr; }
  .type-card-contested { grid-column: 1; }
  .llm-grid { grid-template-columns: 1fr; }
  .oss-grid { grid-template-columns: 1fr; }
  .roadmap-track { grid-template-columns: repeat(2, 1fr); gap: 0.75rem; }
  .roadmap-line { display: none; }
  .closing-links { gap: 2rem; }
}
@media (max-width: 480px) {
  .hero-title-main { font-size: 4.5rem; }
  .hero-ctas { flex-direction: column; }
  .roadmap-track { grid-template-columns: 1fr; }
}