@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&family=Noto+Sans+SC:wght@400;500;700;800&display=swap");

:root {
  --bg: #07090d;
  --bg-deep: #04050a;
  --surface: #0f141c;
  --surface-alt: #131a24;
  --surface-hover: #182131;

  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --border-hover: rgba(138, 164, 255, 0.36);

  --text: #f3f6fb;
  --text-secondary: #a9b3c5;
  --text-tertiary: #6f7b91;

  --accent: #8aa4ff;
  --accent-hover: #adc0ff;
  --accent-soft: rgba(138, 164, 255, 0.14);
  --accent-strong: #d8e1ff;
  --signal: #c9ff5a;
  --signal-soft: rgba(201, 255, 90, 0.18);
  --warm: #ff9d6c;

  --bg-rgb: 7, 9, 13;
  --accent-rgb: 138, 164, 255;
  --signal-rgb: 201, 255, 90;

  --shadow-lg: 0 18px 40px rgba(0, 0, 0, 0.32);
  --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.36);
  --shadow-glow: 0 0 80px rgba(var(--accent-rgb), 0.18);
  --radius-card: 22px;
  --radius-panel: 28px;
  --radius-pill: 999px;

  --mx: 50vw;
  --my: 50vh;
}

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

html {
  scroll-behavior: smooth;
}

[id] {
  scroll-margin-top: 96px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans SC", "Inter", sans-serif;
  font-size: 16px;
  line-height: 1.78;
  letter-spacing: 0.01em;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 15% 18%, rgba(var(--accent-rgb), 0.18), transparent 38%),
    radial-gradient(circle at 88% 8%, rgba(var(--signal-rgb), 0.08), transparent 22%),
    radial-gradient(circle at 50% 110%, rgba(255, 157, 108, 0.06), transparent 38%);
  pointer-events: none;
  z-index: -2;
}

body.is-cmd-open {
  overflow: hidden;
}

a {
  color: inherit;
}

button,
input,
textarea {
  font: inherit;
  color: inherit;
}

img {
  max-width: 100%;
  display: block;
}

kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  padding: 0 6px;
  border: 1px solid var(--border-strong);
  border-bottom-width: 2px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.04);
  font: 600 11px/1 "JetBrains Mono", monospace;
  color: var(--text-secondary);
}

.cursor-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 480px;
  height: 480px;
  pointer-events: none;
  background: radial-gradient(circle, rgba(var(--accent-rgb), 0.16), transparent 60%);
  transform: translate(calc(var(--mx) - 240px), calc(var(--my) - 240px));
  z-index: 0;
  mix-blend-mode: screen;
  transition: opacity 0.3s ease;
  opacity: 0;
}

body.cursor-ready .cursor-glow {
  opacity: 1;
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: var(--progress, 0%);
  background: linear-gradient(90deg, var(--accent), var(--signal));
  z-index: 100;
  box-shadow: 0 0 12px rgba(var(--accent-rgb), 0.6);
  transition: width 0.08s linear;
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.035;
  z-index: -1;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 1 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

.page-shell {
  position: relative;
  min-height: 100vh;
  z-index: 1;
}

.container {
  width: min(1200px, calc(100% - 64px));
  margin: 0 auto;
}

.section {
  padding: 112px 0;
  position: relative;
}

.section-alt {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.014), rgba(255, 255, 255, 0));
}

/* ============ Nav ============ */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(var(--bg-rgb), 0.72);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: background-color 0.24s ease, border-color 0.24s ease;
}

.site-nav.is-scrolled {
  background: rgba(var(--bg-rgb), 0.92);
  border-bottom-color: var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 80px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(180deg, rgba(var(--accent-rgb), 0.32), rgba(var(--accent-rgb), 0.08));
  border: 1px solid rgba(var(--accent-rgb), 0.28);
  color: var(--accent-strong);
  font: 700 16px/1 "Inter", sans-serif;
  box-shadow: 0 0 24px rgba(var(--accent-rgb), 0.18);
}

.brand-name {
  font: 700 17px/1.2 "Inter", "Noto Sans SC", sans-serif;
}

.brand-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  margin-left: 6px;
  border: 1px solid rgba(var(--signal-rgb), 0.24);
  border-radius: 999px;
  background: rgba(var(--signal-rgb), 0.06);
  font: 600 11px/1 "Inter", "Noto Sans SC", sans-serif;
  color: var(--signal);
  letter-spacing: 0.06em;
}

.brand-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 8px rgba(var(--signal-rgb), 0.6);
  animation: pulseDot 1.6s ease-in-out infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.7); }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-links > a {
  position: relative;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s ease;
}

.nav-links > a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.2s ease;
}

.nav-links > a:hover,
.nav-links > a.is-active {
  color: var(--text);
}

.nav-links > a.is-active::after {
  transform: scaleX(1);
}

.nav-cta {
  margin-left: 4px;
}

.cmd-hint {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 34px;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-tertiary);
  font: 500 12px/1 "Inter", sans-serif;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.cmd-hint:hover {
  border-color: var(--border-hover);
  color: var(--text);
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  cursor: pointer;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 999px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(4px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

/* ============ Hero ============ */

.hero {
  padding-top: 72px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, 0.9fr);
  gap: 48px;
  align-items: center;
}

.hero-copy > * {
  opacity: 0;
  transform: translateY(12px);
  animation: heroFadeUp 0.65s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.hero-copy > *:nth-child(1) { animation-delay: 0.05s; }
.hero-copy > *:nth-child(2) { animation-delay: 0.14s; }
.hero-copy > *:nth-child(3) { animation-delay: 0.23s; }
.hero-copy > *:nth-child(4) { animation-delay: 0.32s; }
.hero-copy > *:nth-child(5) { animation-delay: 0.4s; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 20px;
  color: var(--text-secondary);
  font: 600 13px/1.4 "Inter", "Noto Sans SC", sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 14px rgba(var(--signal-rgb), 0.5);
  animation: pulseDot 1.8s ease-in-out infinite;
}

.hero-title,
.section-title {
  margin: 0;
  color: var(--text);
}

.hero-title {
  font: 800 68px/1.06 "Noto Sans SC", "Inter", sans-serif;
  letter-spacing: -0.04em;
}

.accent {
  color: var(--accent);
  text-shadow: 0 0 32px rgba(var(--accent-rgb), 0.18);
}

.rotator {
  display: inline-block;
  position: relative;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.rotator.is-swap {
  opacity: 0;
  transform: translateY(-8px);
}

.rotator-caret {
  display: inline-block;
  width: 4px;
  height: 0.9em;
  vertical-align: -0.05em;
  margin-left: 4px;
  background: var(--accent);
  border-radius: 2px;
  animation: blink 1s steps(1) infinite;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.hero-subtitle {
  max-width: 620px;
  margin: 24px 0 0;
  font-size: 18px;
  color: var(--text-secondary);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 22px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font: 600 15px/1 "Inter", "Noto Sans SC", sans-serif;
  text-decoration: none;
  cursor: pointer;
  position: relative;
  transition: transform 0.18s ease, background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.btn-arrow {
  display: inline-block;
  transition: transform 0.2s ease;
}

.btn:hover .btn-arrow {
  transform: translateX(3px);
}

.btn-primary {
  background: var(--accent);
  color: #07101f;
  box-shadow: 0 10px 28px rgba(var(--accent-rgb), 0.28);
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 16px 38px rgba(var(--accent-rgb), 0.36);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px rgba(var(--bg-rgb), 1), 0 0 0 4px rgba(var(--accent-rgb), 0.44);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  border-color: var(--border);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.btn-secondary:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(var(--accent-rgb), 0.18);
}

.meta-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  padding: 0 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-secondary);
  font: 600 12px/1 "Inter", "Noto Sans SC", sans-serif;
  letter-spacing: 0.04em;
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 10px rgba(var(--signal-rgb), 0.4);
}

.badge:hover {
  border-color: var(--border-hover);
  color: var(--text);
  transform: translateY(-1px);
}

/* ============ Hero demo terminal ============ */

.hero-demo {
  position: relative;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-panel);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.015));
  box-shadow: var(--shadow-xl), 0 0 80px rgba(var(--accent-rgb), 0.08);
  overflow: hidden;
  backdrop-filter: blur(10px);
  animation: heroFadeUp 0.7s 0.18s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.hero-demo::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(var(--accent-rgb), 0.6), transparent 30%, transparent 70%, rgba(var(--signal-rgb), 0.4));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0.35;
  pointer-events: none;
}

.hero-demo-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.2);
}

.hero-demo-dots {
  display: flex;
  gap: 6px;
}

.hero-demo-dots span {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
}

.hero-demo-dots span:nth-child(1) { background: #ff5f57; }
.hero-demo-dots span:nth-child(2) { background: #febc2e; }
.hero-demo-dots span:nth-child(3) { background: #28c840; }

.hero-demo-title {
  flex: 1;
  text-align: center;
  font: 500 12px/1 "JetBrains Mono", monospace;
  color: var(--text-tertiary);
  letter-spacing: 0.08em;
}

.hero-demo-status {
  color: var(--signal);
  font-size: 10px;
  animation: pulseDot 1.4s ease-in-out infinite;
}

.hero-demo-body {
  padding: 24px 22px;
  min-height: 240px;
  font: 500 14px/1.7 "JetBrains Mono", "Noto Sans SC", sans-serif;
}

.demo-line {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 14px;
  animation: fadeInUp 0.4s ease both;
}

.demo-line[hidden] {
  display: none;
}

.demo-line-tag {
  flex-shrink: 0;
  display: inline-block;
  padding: 3px 8px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-tertiary);
  font: 600 11px/1.4 "Inter", sans-serif;
  letter-spacing: 0.06em;
  margin-top: 2px;
}

.tag-accent {
  background: rgba(var(--accent-rgb), 0.16);
  color: var(--accent-strong);
}

.demo-line-text {
  flex: 1;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
}

.demo-line-thinking {
  align-items: center;
}

.demo-line-loader {
  display: inline-flex;
  gap: 4px;
  margin-right: 8px;
}

.demo-line-loader span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: bounce 0.9s ease-in-out infinite;
}

.demo-line-loader span:nth-child(2) { animation-delay: 0.15s; }
.demo-line-loader span:nth-child(3) { animation-delay: 0.3s; }

@keyframes bounce {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.5; }
  40% { transform: scale(1); opacity: 1; }
}

.demo-line-thinking-text {
  color: var(--text-secondary);
  font-style: italic;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-demo-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.18);
}

.hero-demo-counter {
  font: 500 12px/1 "JetBrains Mono", monospace;
  color: var(--text-tertiary);
}

.hero-demo-next {
  border: none;
  background: none;
  color: var(--accent);
  cursor: pointer;
  font: 600 13px/1 "Inter", "Noto Sans SC", sans-serif;
  padding: 6px 0;
  transition: color 0.2s ease, transform 0.2s ease;
}

.hero-demo-next:hover {
  color: var(--accent-hover);
  transform: translateX(2px);
}

/* ============ Stats strip ============ */

.stats-strip {
  padding: 32px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.stat {
  text-align: left;
}

.stat-num {
  font: 800 44px/1 "Inter", sans-serif;
  letter-spacing: -0.02em;
  color: var(--text);
  background: linear-gradient(180deg, var(--text), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-label {
  margin-top: 8px;
  color: var(--text-tertiary);
  font: 500 13px/1.4 "Inter", "Noto Sans SC", sans-serif;
}

/* ============ Section heading ============ */

.section-heading {
  max-width: 760px;
  margin-bottom: 48px;
}

.section-title {
  font: 700 44px/1.15 "Noto Sans SC", "Inter", sans-serif;
  letter-spacing: -0.02em;
}

.section-desc {
  margin: 18px 0 0;
  color: var(--text-secondary);
}

/* ============ Playground ============ */

.playground {
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-panel);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.01));
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.playground-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-bottom: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.18);
}

.playground-tab {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  padding: 22px 24px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  text-align: left;
  transition: background-color 0.2s ease, color 0.2s ease;
  border-right: 1px solid var(--border);
}

.playground-tab:last-child {
  border-right: none;
}

.playground-tab:hover {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
}

.playground-tab.is-active {
  background: rgba(var(--accent-rgb), 0.08);
  color: var(--text);
}

.playground-tab.is-active::after {
  content: "";
  position: absolute;
  left: 24px;
  right: 24px;
  bottom: -1px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--signal));
  border-radius: 2px;
}

.tab-num {
  font: 500 11px/1 "JetBrains Mono", monospace;
  color: var(--text-tertiary);
  letter-spacing: 0.1em;
}

.tab-name {
  font: 700 18px/1.3 "Noto Sans SC", "Inter", sans-serif;
}

.tab-desc {
  font: 400 13px/1.4 "Noto Sans SC", "Inter", sans-serif;
  color: var(--text-tertiary);
}

.playground-stage {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  min-height: 480px;
}

.playground-panel {
  display: none;
}

.playground-panel.is-active {
  display: contents;
}

.demo-input {
  padding: 32px;
  border-right: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.14);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.demo-label {
  display: block;
  margin-bottom: 8px;
  font: 600 12px/1.4 "Inter", "Noto Sans SC", sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.demo-field {
  display: block;
}

.demo-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.demo-chip {
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-secondary);
  font: 500 13px/1 "Noto Sans SC", "Inter", sans-serif;
  cursor: pointer;
  transition: all 0.18s ease;
}

.demo-chip:hover {
  border-color: var(--border-hover);
  color: var(--text);
}

.demo-chip.is-active {
  background: rgba(var(--accent-rgb), 0.14);
  border-color: rgba(var(--accent-rgb), 0.5);
  color: var(--accent-strong);
}

.demo-input-text,
.demo-input-area {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(0, 0, 0, 0.28);
  color: var(--text);
  font: 500 15px/1.5 "Noto Sans SC", "Inter", sans-serif;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  resize: vertical;
}

.demo-input-text:focus,
.demo-input-area:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.16);
}

.demo-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.preset-label {
  color: var(--text-tertiary);
  font-size: 13px;
}

.demo-preset {
  padding: 6px 12px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--text-secondary);
  font: 500 12px/1 "Noto Sans SC", "Inter", sans-serif;
  cursor: pointer;
  transition: all 0.18s ease;
}

.demo-preset:hover {
  border-style: solid;
  border-color: var(--border-hover);
  color: var(--text);
}

.demo-cards {
  display: grid;
  gap: 10px;
}

.demo-card {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 14px;
  align-items: center;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.02);
  cursor: pointer;
  text-align: left;
  transition: all 0.18s ease;
}

.demo-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

.demo-card.is-active {
  border-color: rgba(var(--accent-rgb), 0.5);
  background: rgba(var(--accent-rgb), 0.06);
}

.demo-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(var(--accent-rgb), 0.12);
  font-size: 18px;
}

.demo-card-name {
  font: 600 14px/1.3 "Noto Sans SC", "Inter", sans-serif;
  color: var(--text);
}

.demo-card-desc {
  font: 400 12px/1.4 "Noto Sans SC", "Inter", sans-serif;
  color: var(--text-tertiary);
  margin-top: 2px;
}

.demo-run {
  align-self: flex-start;
  margin-top: 4px;
}

.demo-output {
  padding: 28px 32px;
  position: relative;
  overflow: auto;
  background:
    radial-gradient(circle at 100% 0%, rgba(var(--accent-rgb), 0.06), transparent 40%),
    linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.12));
  min-height: 480px;
  max-height: 640px;
}

.demo-output-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 320px;
  color: var(--text-tertiary);
  font-size: 14px;
  text-align: center;
  border: 1px dashed var(--border);
  border-radius: 14px;
  padding: 32px;
}

.output-step {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 10px 14px;
  margin-bottom: 10px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.025);
  color: var(--text-secondary);
  font: 500 13px/1.4 "JetBrains Mono", "Noto Sans SC", sans-serif;
  animation: fadeInUp 0.35s ease both;
}

.output-step-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(var(--accent-rgb), 0.16);
  color: var(--accent-strong);
  font-size: 11px;
}

.output-step.is-done .output-step-icon {
  background: rgba(var(--signal-rgb), 0.2);
  color: var(--signal);
}

.output-block {
  margin: 16px 0;
  padding: 18px 20px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--border);
  animation: fadeInUp 0.4s ease both;
}

.output-block.is-prompt {
  border-color: rgba(var(--accent-rgb), 0.25);
  background: rgba(var(--accent-rgb), 0.05);
}

.output-block.is-final {
  border-color: rgba(var(--signal-rgb), 0.3);
  background: rgba(var(--signal-rgb), 0.05);
  box-shadow: 0 0 28px rgba(var(--signal-rgb), 0.06);
}

.output-block-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font: 600 13px/1.4 "Inter", "Noto Sans SC", sans-serif;
  color: var(--text);
  margin-bottom: 10px;
  letter-spacing: 0.04em;
}

.output-block-body {
  font: 500 14px/1.75 "Noto Sans SC", "Inter", sans-serif;
  color: var(--text-secondary);
  white-space: pre-wrap;
  word-break: break-word;
}

.output-block.is-prompt .output-block-body {
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
}

.output-copy {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-secondary);
  font: 500 11px/1 "Inter", sans-serif;
  padding: 5px 10px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.output-copy:hover {
  border-color: var(--border-hover);
  color: var(--text);
}

/* Flow demo SVG */
.flow-canvas {
  position: relative;
  display: grid;
  gap: 14px;
  margin-top: 10px;
}

.flow-node {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 18px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  opacity: 0;
  transform: translateY(8px);
  animation: fadeInUp 0.45s ease forwards;
}

.flow-node::before {
  content: "";
  position: absolute;
  left: 32px;
  top: 100%;
  width: 2px;
  height: 14px;
  background: linear-gradient(180deg, rgba(var(--accent-rgb), 0.5), transparent);
}

.flow-node:last-child::before {
  display: none;
}

.flow-node-num {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(180deg, rgba(var(--accent-rgb), 0.28), rgba(var(--accent-rgb), 0.1));
  border: 1px solid rgba(var(--accent-rgb), 0.45);
  color: var(--accent-strong);
  font: 700 14px/1 "Inter", sans-serif;
}

.flow-node-content {
  flex: 1;
}

.flow-node-title {
  font: 700 15px/1.3 "Noto Sans SC", "Inter", sans-serif;
  color: var(--text);
}

.flow-node-desc {
  margin-top: 4px;
  font: 400 13px/1.55 "Noto Sans SC", "Inter", sans-serif;
  color: var(--text-secondary);
}

.flow-node-tool {
  display: inline-block;
  margin-top: 6px;
  padding: 2px 8px;
  border-radius: 6px;
  background: rgba(var(--accent-rgb), 0.1);
  color: var(--accent-strong);
  font: 500 11px/1.4 "JetBrains Mono", monospace;
}

/* ============ Process timeline ============ */

.process-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.process-timeline::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, rgba(var(--accent-rgb), 0.36), rgba(var(--signal-rgb), 0.36));
}

.process-step {
  position: relative;
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 20px;
  padding: 18px 0;
  cursor: pointer;
  transition: opacity 0.4s ease, transform 0.4s ease;
  opacity: 0;
  transform: translateX(-12px);
}

.process-timeline.in-view .process-step {
  opacity: 1;
  transform: translateX(0);
}

.process-timeline.in-view .process-step:nth-child(1) { transition-delay: 0.05s; }
.process-timeline.in-view .process-step:nth-child(2) { transition-delay: 0.15s; }
.process-timeline.in-view .process-step:nth-child(3) { transition-delay: 0.25s; }
.process-timeline.in-view .process-step:nth-child(4) { transition-delay: 0.35s; }

.process-step-marker {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid rgba(var(--accent-rgb), 0.5);
  color: var(--accent-strong);
  font: 700 16px/1 "Inter", sans-serif;
  margin-left: 0;
  transition: all 0.3s ease;
}

.process-step:hover .process-step-marker {
  transform: scale(1.1);
  border-color: var(--signal);
  color: var(--signal);
  box-shadow: 0 0 20px rgba(var(--signal-rgb), 0.32);
}

.process-step-body {
  padding-top: 6px;
}

.process-step-title {
  margin: 0;
  font: 700 22px/1.3 "Noto Sans SC", "Inter", sans-serif;
  color: var(--text);
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}

.process-step-time {
  font: 500 12px/1.4 "JetBrains Mono", monospace;
  color: var(--text-tertiary);
  padding: 3px 8px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.04);
  letter-spacing: 0.04em;
}

.process-step-desc {
  margin: 8px 0 0;
  color: var(--text-secondary);
  max-width: 720px;
}

.process-step-deliverables {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.process-deliverable {
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(var(--accent-rgb), 0.08);
  color: var(--accent-strong);
  font: 500 12px/1.4 "Noto Sans SC", "Inter", sans-serif;
  border: 1px solid rgba(var(--accent-rgb), 0.18);
}

/* ============ Works ============ */

.works-list {
  display: grid;
  gap: 16px;
}

.work-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.015));
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.work-item:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.work-item.is-open {
  border-color: rgba(var(--accent-rgb), 0.4);
  box-shadow: var(--shadow-glow);
}

.work-summary {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: 20px;
  align-items: center;
  padding: 24px 28px;
  cursor: pointer;
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
  color: inherit;
}

.work-summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -4px;
}

.work-index {
  font: 600 13px/1 "JetBrains Mono", monospace;
  color: var(--text-tertiary);
  letter-spacing: 0.08em;
}

.work-title {
  margin: 0;
  font: 700 20px/1.35 "Noto Sans SC", "Inter", sans-serif;
  color: var(--text);
}

.work-tag {
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-secondary);
  font: 500 12px/1.4 "Noto Sans SC", "Inter", sans-serif;
  letter-spacing: 0.04em;
  border: 1px solid var(--border);
}

.work-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.work-item.is-open .work-toggle {
  transform: rotate(45deg);
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(var(--accent-rgb), 0.1);
}

.work-detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.work-item.is-open .work-detail {
  max-height: 800px;
}

.work-detail-inner {
  padding: 0 28px 28px;
  display: grid;
  gap: 16px;
}

.work-flow {
  list-style: none;
  margin: 0;
  padding: 18px 22px;
  border-radius: 16px;
  background: rgba(0, 0, 0, 0.18);
  border: 1px solid var(--border);
  display: grid;
  gap: 14px;
}

.work-step {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 16px;
  align-items: baseline;
}

.work-step-label {
  font: 600 12px/1.4 "Inter", sans-serif;
  color: var(--accent-strong);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.work-step-text {
  color: var(--text-secondary);
}

.work-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.work-metric {
  padding: 8px 14px;
  border-radius: 12px;
  background: rgba(var(--signal-rgb), 0.06);
  border: 1px solid rgba(var(--signal-rgb), 0.18);
  color: var(--signal);
  font: 600 13px/1.3 "Inter", "Noto Sans SC", sans-serif;
}

/* ============ About chat ============ */

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 40px;
  align-items: start;
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.about-chat {
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-panel);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.chat-window {
  padding: 24px;
  min-height: 280px;
  max-height: 460px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.chat-bubble {
  max-width: 86%;
  padding: 12px 16px;
  border-radius: 16px;
  font-size: 14.5px;
  line-height: 1.7;
  animation: fadeInUp 0.35s ease both;
}

.chat-bubble.is-user {
  align-self: flex-end;
  background: var(--accent);
  color: #07101f;
  border-bottom-right-radius: 4px;
  font-weight: 500;
}

.chat-bubble.is-bot {
  align-self: flex-start;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
}

.chat-bubble.is-typing {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 14px 18px;
}

.chat-bubble.is-typing span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-tertiary);
  animation: bounce 0.9s ease-in-out infinite;
}

.chat-bubble.is-typing span:nth-child(2) { animation-delay: 0.15s; }
.chat-bubble.is-typing span:nth-child(3) { animation-delay: 0.3s; }

.chat-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.2);
}

.chat-suggestion {
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-secondary);
  font: 500 13px/1 "Noto Sans SC", "Inter", sans-serif;
  cursor: pointer;
  transition: all 0.18s ease;
}

.chat-suggestion:hover {
  border-color: var(--border-hover);
  color: var(--text);
  transform: translateY(-1px);
}

.chat-suggestion.is-used {
  opacity: 0.35;
  pointer-events: none;
}

/* ============ Contact ============ */

.contact-panel {
  position: relative;
  width: 100%;
  background:
    radial-gradient(circle at 0% 0%, rgba(var(--accent-rgb), 0.16), transparent 38%),
    radial-gradient(circle at 100% 100%, rgba(var(--signal-rgb), 0.08), transparent 38%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-panel);
  padding: 48px;
  box-shadow: var(--shadow-xl);
  overflow: hidden;
}

.contact-bg-glow {
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(var(--accent-rgb), 0.18), transparent 60%);
  top: -100px;
  right: -100px;
  filter: blur(40px);
  pointer-events: none;
}

.contact-desc {
  max-width: 760px;
}

.contact-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  position: relative;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.contact-label {
  color: var(--text-tertiary);
  font: 600 12px/1.4 "Inter", sans-serif;
  letter-spacing: 0.1em;
}

.copy-feedback {
  min-height: 24px;
  margin: 18px 0 0;
  color: var(--signal);
  font: 500 14px/1.5 "Inter", "Noto Sans SC", sans-serif;
}

.text-link {
  position: relative;
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

.text-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0.35);
  transform-origin: left center;
  opacity: 0.7;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.text-link:hover {
  color: var(--accent-hover);
}

.text-link:hover::after {
  transform: scaleX(1);
  opacity: 1;
}

/* ============ Footer ============ */

.site-footer {
  padding: 40px 0 48px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}

.footer-brand {
  margin: 0;
  font: 700 18px/1.3 "Inter", "Noto Sans SC", sans-serif;
}

.footer-text {
  margin: 8px 0 0;
  color: var(--text-secondary);
}

.footer-meta {
  text-align: right;
}

.footer-hint {
  margin: 8px 0 0;
  font-size: 12px;
  color: var(--text-tertiary);
}

/* ============ Reveal ============ */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============ Command palette ============ */

.command-palette {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 12vh;
}

.command-palette.is-open {
  display: flex;
  animation: cmdFadeIn 0.18s ease;
}

.command-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.command-modal {
  position: relative;
  width: min(560px, calc(100% - 32px));
  border: 1px solid var(--border-strong);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(20, 25, 36, 0.95), rgba(12, 16, 24, 0.95));
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(var(--accent-rgb), 0.16);
  overflow: hidden;
  animation: cmdSlideIn 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes cmdFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes cmdSlideIn {
  from { opacity: 0; transform: translateY(-12px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.command-input-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
}

.command-prompt {
  color: var(--accent);
  font: 600 18px/1 "JetBrains Mono", monospace;
}

#command-input {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--text);
  font: 500 15px/1.4 "Noto Sans SC", "Inter", sans-serif;
  outline: none;
}

.command-esc {
  margin-left: auto;
}

.command-list {
  list-style: none;
  margin: 0;
  padding: 8px;
  max-height: 320px;
  overflow-y: auto;
}

.command-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
  color: var(--text-secondary);
  transition: background-color 0.15s ease, color 0.15s ease;
}

.command-item:hover,
.command-item.is-active {
  background: rgba(var(--accent-rgb), 0.12);
  color: var(--text);
}

.command-item-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
  font-size: 14px;
}

.command-item-name {
  flex: 1;
  font: 600 14px/1.3 "Noto Sans SC", "Inter", sans-serif;
}

.command-item-hint {
  font: 500 12px/1 "JetBrains Mono", monospace;
  color: var(--text-tertiary);
}

.command-foot {
  display: flex;
  gap: 16px;
  padding: 10px 16px;
  border-top: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.2);
  font: 500 11px/1 "Inter", sans-serif;
  color: var(--text-tertiary);
}

.command-foot kbd {
  margin-right: 4px;
}

.command-empty {
  padding: 24px 16px;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 13px;
}

/* ============ Toast ============ */

.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  padding: 12px 20px;
  border-radius: 999px;
  background: rgba(20, 25, 36, 0.96);
  border: 1px solid rgba(var(--signal-rgb), 0.4);
  color: var(--signal);
  font: 600 13px/1 "Noto Sans SC", "Inter", sans-serif;
  box-shadow: var(--shadow-xl);
  z-index: 300;
  opacity: 0;
  transition: opacity 0.25s ease, transform 0.25s ease;
  pointer-events: none;
}

.toast.is-show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ============ Magnetic ============ */

.magnetic {
  transition: transform 0.15s ease;
}

/* ============ Focus ============ */

:focus-visible {
  outline-offset: 3px;
}

/* ============ Responsive ============ */

@media (max-width: 1199px) {
  .container {
    width: min(100% - 48px, 1080px);
  }

  .hero-grid,
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .playground-stage {
    grid-template-columns: 1fr;
  }

  .demo-input {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .hero-title {
    font-size: 56px;
  }

  .section-title {
    font-size: 36px;
  }

  .contact-meta {
    grid-template-columns: 1fr 1fr;
  }

  .cursor-glow {
    display: none;
  }
}

@media (max-width: 767px) {
  .container {
    width: calc(100% - 32px);
  }

  .section {
    padding: 72px 0;
  }

  .nav-inner {
    min-height: 72px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    top: calc(100% + 10px);
    left: 16px;
    right: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: rgba(var(--bg-rgb), 0.98);
    box-shadow: var(--shadow-lg);
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-cta { margin-left: 0; }
  .cmd-hint { display: none; }

  .brand-status { display: none; }

  .hero { padding-top: 48px; }

  .hero-title {
    font-size: 40px;
    line-height: 1.12;
  }

  .section-title {
    font-size: 28px;
  }

  .btn {
    width: 100%;
  }

  .playground-tabs {
    grid-template-columns: 1fr;
  }

  .playground-tab {
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 16px 20px;
  }

  .playground-tab.is-active::after {
    display: none;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .stat-num { font-size: 32px; }

  .work-summary {
    grid-template-columns: 1fr auto;
    gap: 12px;
  }

  .work-index,
  .work-tag { grid-column: 1 / -1; }
  .work-toggle { grid-row: 1; grid-column: 2; }

  .work-step {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-meta {
    text-align: left;
  }

  .contact-panel { padding: 28px 22px; }
  .demo-input { padding: 24px; }
  .demo-output { padding: 22px 20px; }
  .contact-meta { grid-template-columns: 1fr; }
}

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