/* Nive Protocol — Brand Aesthetics
 * Color System Built Around the Official Nive Pixel Emblem:
 * Obsidian Black, Radiant Gold Flares, Warm Amber, and Fiery Ember Red-Orange.
 */

:root {
  --ink: #050508;
  --ink-deep: #020205;
  --surface: #0c0a10;
  --surface-panel: rgba(16, 13, 20, 0.78);
  --paper: #f7f5f2;
  --muted: #a39c94;
  --dim: #726b64;
  
  /* Brand Logo Color System */
  --gold: #ffd200;
  --gold-light: #ffe47a;
  --gold-glow: rgba(255, 210, 0, 0.28);
  --amber: #ff9900;
  --amber-glow: rgba(255, 153, 0, 0.24);
  --orange: #ff5500;
  --orange-glow: rgba(255, 85, 0, 0.28);
  --vermilion: #ff3300;
  --vermilion-glow: rgba(255, 51, 0, 0.32);
  
  --brand-grad: linear-gradient(135deg, #ffd200 0%, #ff8c00 50%, #ff3700 100%);
  --brand-grad-subtle: linear-gradient(135deg, rgba(255, 210, 0, 0.12) 0%, rgba(255, 140, 0, 0.08) 50%, rgba(255, 55, 0, 0.12) 100%);
  
  --line: rgba(255, 185, 60, 0.14);
  --line-strong: rgba(255, 185, 60, 0.28);
  --soft: rgba(255, 160, 40, 0.06);

  --mono: "DM Mono", monospace;
  --sans: "Inter", system-ui, sans-serif;
  --max: 1520px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--ink);
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  position: relative;
}

/* Ambient Top-Left Gold Flare & Bottom-Right Ember Flare */
body::before {
  content: "";
  position: fixed;
  top: -180px;
  left: -180px;
  width: 750px;
  height: 750px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 210, 0, 0.16) 0%, rgba(255, 150, 0, 0.06) 45%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: "";
  position: fixed;
  bottom: -220px;
  right: -200px;
  width: 850px;
  height: 850px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 55, 0, 0.18) 0%, rgba(255, 110, 0, 0.06) 50%, transparent 75%);
  pointer-events: none;
  z-index: 0;
}

a {
  color: inherit;
}

button {
  font: inherit;
}

::selection {
  background: var(--orange);
  color: #fff;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 200;
  background: var(--gold);
  color: #050508;
  font-weight: 600;
  padding: 12px 18px;
  border-radius: 999px;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 16px;
}

.site-shell {
  width: min(calc(100% - 24px), var(--max));
  margin: 12px auto;
  position: relative;
  z-index: 1;
}

/* Navigation Header */
.site-header {
  height: 82px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 28px;
  position: absolute;
  inset: 12px 0 auto;
  z-index: 20;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.03em;
  width: max-content;
}

.site-logo {
  height: 28px;
  width: auto;
  display: block;
  object-fit: contain;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.wordmark:hover .site-logo {
  opacity: 0.92;
  transform: scale(1.02);
}

.nav-capsule {
  display: flex;
  gap: 6px;
  padding: 6px;
  border: 1px solid var(--line);
  background: rgba(12, 10, 16, 0.72);
  backdrop-filter: blur(20px);
  border-radius: 999px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 210, 0, 0.1);
}

.nav-capsule a {
  text-decoration: none;
  color: #d1cbc2;
  font-size: 13px;
  font-weight: 500;
  padding: 9px 17px;
  border-radius: 999px;
  transition: all 0.2s ease;
}

.nav-capsule a:hover,
.nav-capsule a:focus-visible {
  background: rgba(255, 180, 50, 0.12);
  color: #fff;
  outline: none;
}

.header-cta {
  justify-self: end;
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  background: var(--brand-grad);
  color: #070503;
  padding: 11px 20px;
  border-radius: 999px;
  box-shadow: 0 4px 20px var(--amber-glow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.header-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 26px var(--orange-glow);
}

.menu-toggle {
  display: none;
}

/* Hero Section */
.hero {
  min-height: min(920px, calc(100vh - 24px));
  position: relative;
  overflow: hidden;
  border-radius: 0 0 34px 34px;
  background:
    radial-gradient(55% 55% at 0% 0%, rgba(255, 215, 0, 0.24) 0%, rgba(255, 160, 0, 0.08) 45%, transparent 75%),
    radial-gradient(65% 65% at 100% 100%, rgba(255, 55, 0, 0.26) 0%, rgba(255, 100, 0, 0.08) 50%, transparent 80%),
    radial-gradient(70% 50% at 50% 115%, rgba(255, 130, 0, 0.32) 0%, rgba(255, 60, 0, 0.15) 38%, transparent 75%),
    linear-gradient(180deg, #050508 0%, #0a080e 60%, #160a03 100%);
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  padding: 130px clamp(32px, 7vw, 110px) 90px;
  border: 1px solid var(--line);
  border-top: none;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 185, 60, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 185, 60, 0.03) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(to bottom, #000 0%, transparent 80%);
  pointer-events: none;
}

.hero-copy,
.hero-visual {
  position: relative;
  z-index: 2;
}

.eyebrow,
.section-index,
.micro-label {
  font: 11px var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-light);
}

.status-dot {
  width: 7px;
  height: 7px;
  display: inline-block;
  background: var(--gold);
  border-radius: 50%;
  margin-right: 8px;
  box-shadow: 0 0 16px var(--amber), 0 0 32px var(--orange);
  animation: pulseAmber 2.2s infinite ease-in-out;
}

@keyframes pulseAmber {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.9); }
}

h1 {
  font-size: clamp(48px, 6.15vw, 96px);
  line-height: 0.97;
  letter-spacing: -0.068em;
  font-weight: 400;
  margin: 24px 0 28px;
  max-width: 820px;
}

h1 em {
  font-style: normal;
  color: transparent;
  background: linear-gradient(90deg, #ffe066 0%, #ff9500 45%, #ff3700 100%);
  -webkit-background-clip: text;
  background-clip: text;
  filter: drop-shadow(0 2px 20px rgba(255, 140, 0, 0.3));
}

.hero-summary {
  max-width: 610px;
  font-size: clamp(16px, 1.25vw, 20px);
  line-height: 1.6;
  color: #cbc3b8;
}

.hero-actions,
.developer-links,
.final-cta > div:last-child {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 32px;
  padding: 14px 22px;
  border-radius: 999px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-light {
  color: #070503;
  background: var(--brand-grad);
  box-shadow: 0 4px 26px var(--amber-glow);
}

.button-light:hover {
  box-shadow: 0 6px 36px var(--orange-glow);
}

.button-outline {
  border-color: var(--line-strong);
  background: rgba(255, 185, 60, 0.05);
  color: #f7f5f2;
  backdrop-filter: blur(10px);
}

.button-outline:hover {
  background: rgba(255, 185, 60, 0.12);
  border-color: var(--gold);
}

.text-link {
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  color: var(--gold-light);
  transition: color 0.2s ease;
}

.text-link:hover {
  color: #fff;
}

.text-link span {
  margin-left: 8px;
}

.hero-visual {
  min-height: 620px;
  display: grid;
  place-items: center;
  position: relative;
}

#agentField {
  width: min(100%, 690px);
  height: auto;
  filter: drop-shadow(0 20px 70px rgba(255, 130, 0, 0.28));
}

.visual-label {
  position: absolute;
  font: 9px var(--mono);
  letter-spacing: 0.12em;
  color: var(--gold-light);
  display: flex;
  gap: 8px;
  align-items: center;
  background: rgba(15, 12, 18, 0.65);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 185, 60, 0.2);
  backdrop-filter: blur(8px);
}

.visual-label span {
  width: 5px;
  height: 5px;
  background: var(--gold);
  border-radius: 50%;
  box-shadow: 0 0 9px var(--amber);
}

.visual-label-a { top: 25%; left: 12%; }
.visual-label-b { top: 67%; right: 8%; }
.visual-label-c { top: 47%; right: 15%; }

.hero-foot {
  position: absolute;
  z-index: 3;
  bottom: 28px;
  left: 7%;
  right: 7%;
  display: flex;
  align-items: center;
  gap: 18px;
  font: 9px var(--mono);
  letter-spacing: 0.18em;
  color: var(--gold-light);
  opacity: 0.85;
}

.hero-foot i {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 185, 60, 0.3), transparent);
  flex: 1;
}

/* Proof Strip */
.proof-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--soft);
  background: rgba(12, 10, 16, 0.45);
}

.proof-strip article {
  min-height: 190px;
  padding: 42px clamp(20px, 4vw, 56px);
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--soft);
  transition: background 0.2s ease;
}

.proof-strip article:hover {
  background: rgba(255, 185, 60, 0.02);
}

.proof-strip article:last-child {
  border-right: 0;
}

.proof-strip strong {
  font-size: 43px;
  font-weight: 400;
  letter-spacing: -0.05em;
  color: #fff;
}

.proof-strip span {
  margin-top: auto;
  font-size: 14px;
  color: var(--paper);
}

.proof-strip small {
  color: var(--gold-light);
  font-family: var(--mono);
  font-size: 11px;
  margin-top: 5px;
}

/* Content Sections */
.section-pad {
  padding: 130px clamp(22px, 6vw, 94px);
  border-bottom: 1px solid var(--soft);
}

.section-index {
  margin: 0 0 44px;
}

.manifesto-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.55fr;
  gap: 11vw;
  align-items: end;
}

.manifesto h2,
.section-heading h2,
.architecture h2,
.developer h2,
.security h2,
.final-cta h2 {
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 1.05;
  margin: 0;
}

.manifesto h2 {
  font-size: clamp(42px, 5.5vw, 82px);
  max-width: 1000px;
}

.manifesto-copy p,
.developer-copy > p,
.security-grid > div > p {
  color: var(--muted);
  line-height: 1.75;
  font-size: 16px;
  margin: 0;
}

.manifesto-copy .text-link {
  display: inline-block;
  margin-top: 30px;
}

.section-heading {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: end;
  margin-bottom: 64px;
}

.section-heading .section-index {
  margin-bottom: 22px;
}

.section-heading h2 {
  font-size: clamp(40px, 4.5vw, 66px);
  max-width: 800px;
}

.section-heading > p {
  color: var(--muted);
  line-height: 1.65;
  margin: 0;
}

/* Protocol Flow Cards */
.flow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  background: rgba(10, 8, 14, 0.5);
}

.flow-card {
  min-height: 430px;
  padding: 28px;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: background 0.3s ease;
}

.flow-card:hover {
  background: rgba(255, 185, 60, 0.035);
}

.flow-card:last-child {
  border-right: 0;
}

.flow-number {
  font: 11px var(--mono);
  color: var(--gold-light);
}

.flow-card h3 {
  margin: auto 0 12px;
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.035em;
  color: #fff;
}

.flow-card p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
  min-height: 92px;
}

.flow-card small {
  font: 9px var(--mono);
  letter-spacing: 0.12em;
  color: var(--gold-light);
}

/* Flow Glyphs */
.glyph {
  width: 150px;
  height: 150px;
  position: absolute;
  top: 58px;
  left: calc(50% - 75px);
  opacity: 0.9;
}

.glyph::before,
.glyph::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 185, 60, 0.55);
  border-radius: 50%;
}

.glyph::after {
  inset: 28px;
  box-shadow: 0 0 50px rgba(255, 130, 0, 0.35);
}

.glyph-lines::before {
  border-radius: 0;
  background: repeating-linear-gradient(0deg, transparent 0 10px, rgba(255, 185, 60, 0.6) 11px 12px);
  border: 0;
  transform: perspective(180px) rotateX(58deg);
}

.glyph-lines::after,
.glyph-grid::after {
  display: none;
}

.glyph-grid::before {
  border-radius: 0;
  border: 0;
  background-image: radial-gradient(circle, #ffd200 1.4px, transparent 1.5px);
  background-size: 12px 12px;
  mask-image: radial-gradient(circle, #000, transparent 70%);
}

.glyph-orbit::after {
  inset: 50px;
  background: var(--brand-grad);
  border: 0;
  box-shadow: 0 0 35px var(--orange);
}

/* Architecture Section */
.architecture {
  background: #09080e;
  color: var(--paper);
  border-top: 1px solid var(--line);
  position: relative;
}

.architecture::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 50%, rgba(255, 120, 0, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.architecture .section-index {
  color: var(--gold-light);
}

.architecture-panel {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 10vw;
  align-items: center;
}

.architecture-copy h2 {
  font-size: clamp(42px, 4.2vw, 66px);
}

.architecture-copy > p:not(.micro-label) {
  color: var(--muted);
  line-height: 1.7;
  max-width: 520px;
  margin: 26px 0;
}

.architecture .button-outline {
  border-color: var(--line-strong);
  background: rgba(255, 185, 60, 0.05);
  color: #fff;
}

.stack-map {
  border: 1px solid var(--line);
  background: rgba(14, 12, 18, 0.8);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  border-radius: 4px;
  overflow: hidden;
}

.stack-layer {
  display: grid;
  grid-template-columns: 50px 1fr 1fr;
  padding: 25px;
  align-items: center;
  border-bottom: 1px solid var(--line);
  transition: background 0.2s ease;
}

.stack-layer:last-child {
  border-bottom: 0;
}

.stack-layer span,
.stack-layer small {
  font: 10px var(--mono);
  color: var(--dim);
}

.stack-layer b {
  font-weight: 500;
  color: var(--paper);
}

.stack-layer.is-live {
  background: linear-gradient(90deg, rgba(255, 180, 50, 0.16) 0%, rgba(255, 70, 0, 0.08) 100%);
  border-left: 3px solid var(--gold);
  color: #fff;
}

.stack-layer.is-live span,
.stack-layer.is-live small {
  color: var(--gold-light);
}

/* Deployment Section */
.chain-list {
  border-top: 1px solid var(--line);
}

.chain-row {
  display: grid;
  grid-template-columns: 1fr 180px 160px;
  align-items: center;
  min-height: 122px;
  border-bottom: 1px solid var(--line);
  transition: background 0.2s ease;
}

.chain-row:hover {
  background: rgba(255, 185, 60, 0.02);
}

.chain-row > div {
  display: flex;
  align-items: center;
  gap: 22px;
}

.chain-mark {
  width: 48px;
  height: 48px;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font: 12px var(--mono);
  color: var(--gold-light);
  background: rgba(255, 185, 60, 0.05);
}

.chain-row h3 {
  font-size: 21px;
  font-weight: 400;
  margin: 0 0 6px;
  color: #fff;
}

.chain-row p,
.chain-row > span,
.chain-row a {
  font-size: 12px;
  color: var(--muted);
  margin: 0;
  text-decoration: none;
}

.chain-row strong {
  font: 10px var(--mono);
  letter-spacing: 0.12em;
  color: var(--dim);
}

.chain-row.is-live strong {
  color: var(--gold);
}

.chain-row strong i {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  margin-right: 8px;
  box-shadow: 0 0 12px var(--amber);
}

.chain-row.is-live a {
  color: var(--gold-light);
  font-family: var(--mono);
  transition: color 0.2s ease;
}

.chain-row.is-live a:hover {
  color: #fff;
  text-decoration: underline;
}

/* Developer Section */
.developer {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 9vw;
  align-items: center;
}

.developer-copy h2 {
  font-size: clamp(44px, 5vw, 74px);
}

.developer-copy > p {
  margin-top: 26px;
  max-width: 560px;
}

.terminal-card {
  border: 1px solid var(--line);
  background: #08060a;
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.6), 0 0 40px rgba(255, 120, 0, 0.08);
  border-radius: 8px;
  overflow: hidden;
}

.terminal-head {
  height: 52px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  font: 10px var(--mono);
  letter-spacing: 0.1em;
  color: var(--gold-light);
  background: rgba(255, 185, 60, 0.03);
}

.terminal-head button {
  color: var(--paper);
  background: rgba(255, 185, 60, 0.08);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 4px 10px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.terminal-head button:hover {
  background: var(--gold);
  color: #050508;
}

.terminal-card pre {
  margin: 0;
  padding: 32px;
  overflow: auto;
  min-height: 430px;
  color: #f7edd8;
  font: 13px / 1.8 var(--mono);
}

.code-muted {
  color: #7d7265;
}

/* Security Posture */
.security-grid {
  display: grid;
  grid-template-columns: 1fr 0.85fr;
  gap: 10vw;
}

.security h2 {
  font-size: clamp(42px, 4.5vw, 68px);
}

.security-grid > div > p {
  margin-top: 28px;
  max-width: 720px;
}

.security ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.security li {
  display: flex;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.security li:first-child {
  border-top: 1px solid var(--line);
}

.security li > span {
  font: 10px var(--mono);
  color: var(--gold);
}

.security li b {
  font-size: 15px;
  font-weight: 500;
  display: block;
  margin-bottom: 7px;
  color: #fff;
}

.security li small {
  color: var(--muted);
  line-height: 1.5;
}

/* Final Call-To-Action */
.final-cta {
  min-height: 720px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  border-radius: 0 0 34px 34px;
  background:
    radial-gradient(circle at 50% 60%, rgba(255, 140, 0, 0.28) 0%, rgba(255, 55, 0, 0.12) 35%, transparent 68%),
    linear-gradient(180deg, #050508 0%, #110803 100%);
  border: 1px solid var(--line);
  border-top: none;
}

.final-cta h2 {
  font-size: clamp(54px, 7vw, 108px);
  position: relative;
  z-index: 2;
}

.final-cta > *:not(.cta-orbit) {
  position: relative;
  z-index: 2;
}

.cta-orbit {
  position: absolute;
  width: 510px;
  height: 510px;
  border: 1px solid rgba(255, 185, 60, 0.22);
  border-radius: 50%;
  display: grid;
  place-items: center;
}

.cta-orbit::before,
.cta-orbit::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(255, 185, 60, 0.16);
  border-radius: 50%;
}

.cta-orbit::before {
  inset: 60px;
}

.cta-orbit::after {
  inset: 120px;
}

.orbit-logo-icon {
  width: 76px;
  height: 76px;
  object-fit: contain;
  filter: drop-shadow(0 0 35px rgba(255, 140, 0, 0.75));
  animation: pulseLogo 3s infinite alternate ease-in-out;
}

@keyframes pulseLogo {
  0% { transform: scale(0.96); filter: drop-shadow(0 0 25px rgba(255, 140, 0, 0.5)); }
  100% { transform: scale(1.05); filter: drop-shadow(0 0 50px rgba(255, 75, 0, 0.85)); }
}

.cta-orbit i {
  position: absolute;
  width: 7px;
  height: 7px;
  background: var(--gold);
  border-radius: 50%;
  box-shadow: 0 0 15px var(--amber);
}

.cta-orbit i:nth-child(1) { top: 8%; left: 50%; }
.cta-orbit i:nth-child(2) { top: 52%; right: -3px; }
.cta-orbit i:nth-child(3) { bottom: 12%; left: 18%; }

/* Site Footer */
.site-footer {
  padding: 52px 28px 30px;
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 30px;
  align-items: start;
}

.site-footer p,
.site-footer small {
  color: var(--muted);
  font-size: 12px;
}

.site-footer div {
  display: flex;
  gap: 24px;
}

.site-footer div a {
  font-size: 12px;
  text-decoration: none;
  color: var(--muted);
  transition: color 0.2s ease;
}

.site-footer div a:hover {
  color: var(--gold);
}

.site-footer small {
  grid-column: 1 / -1;
  border-top: 1px solid var(--soft);
  padding-top: 24px;
}

/* Animations & Accessibility */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 4px;
}

/* Responsive Breakpoints */
@media (max-width: 1000px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }
  .nav-capsule {
    display: none;
    position: absolute;
    top: 72px;
    left: 20px;
    right: 20px;
    flex-direction: column;
    border-radius: 18px;
    padding: 12px;
  }
  .nav-capsule.is-open {
    display: flex;
  }
  .menu-toggle {
    display: block;
    justify-self: end;
    background: rgba(255, 185, 60, 0.08);
    color: #fff;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 8px 15px;
    cursor: pointer;
  }
  .header-cta {
    display: none;
  }
  .hero {
    grid-template-columns: 1fr;
    padding-top: 150px;
  }
  .hero-visual {
    min-height: 500px;
  }
  .proof-strip {
    grid-template-columns: repeat(2, 1fr);
  }
  .proof-strip article:nth-child(2) {
    border-right: 0;
  }
  .manifesto-grid,
  .architecture-panel,
  .developer,
  .security-grid {
    grid-template-columns: 1fr;
    gap: 60px;
  }
  .flow-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .flow-card:nth-child(2) {
    border-right: 0;
  }
  .flow-card:nth-child(-n+2) {
    border-bottom: 1px solid var(--line);
  }
  .section-heading {
    grid-template-columns: 1fr;
  }
  .site-footer {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .site-shell {
    width: 100%;
    margin: 0;
  }
  .site-header {
    padding: 0 18px;
  }
  .hero {
    border-radius: 0;
    min-height: auto;
    padding: 130px 22px 60px;
  }
  h1 {
    font-size: 50px;
  }
  .hero-summary {
    font-size: 15px;
  }
  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
  }
  .hero-visual {
    min-height: 360px;
  }
  .hero-foot {
    display: none;
  }
  .proof-strip {
    grid-template-columns: 1fr 1fr;
  }
  .proof-strip article {
    padding: 28px 20px;
    min-height: 150px;
  }
  .proof-strip strong {
    font-size: 34px;
  }
  .section-pad {
    padding: 90px 22px;
  }
  .manifesto h2,
  .section-heading h2,
  .architecture-copy h2,
  .developer-copy h2,
  .security h2 {
    font-size: 42px;
  }
  .flow-grid {
    grid-template-columns: 1fr;
  }
  .flow-card {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    min-height: 390px;
  }
  .flow-card:last-child {
    border-bottom: 0;
  }
  .chain-row {
    grid-template-columns: 1fr auto;
    padding: 20px 0;
  }
  .chain-row > a,
  .chain-row > span {
    display: none;
  }
  .stack-layer {
    grid-template-columns: 35px 1fr;
  }
  .stack-layer small {
    display: none;
  }
  .terminal-card pre {
    padding: 20px;
    font-size: 11px;
  }
  .final-cta {
    min-height: 620px;
    border-radius: 0;
  }
  .final-cta h2 {
    font-size: 52px;
  }
  .final-cta > div:last-child {
    flex-direction: column;
  }
  .site-footer {
    grid-template-columns: 1fr;
  }
  .site-footer div {
    flex-wrap: wrap;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}