/* ============================================================
   AI System Agent Lab — Design System
   ============================================================ */

/* Typography: editorial display + neutral grotesque + mono */
@import url("https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Bricolage+Grotesque:opsz,wght@12..96,300..800&family=Geist:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap");

:root {
  /* ---- TOKENS (overridden by [data-theme]) ---- */
  --bg: #0b0d12;
  --bg-2: #11141b;
  --bg-3: #181c25;
  --ink: #f4f1e9;
  --ink-2: #c9c4b6;
  --ink-3: #7a766c;
  --line: #262a35;
  --line-2: #1a1d26;
  --accent: #7cf0c9;      /* cool — for tech / business side */
  --accent-2: #ffb547;    /* warm — for human side */
  --danger: #ff6b6b;

  /* Layout */
  --maxw: 1320px;
  --gutter: clamp(20px, 4vw, 56px);
  --radius: 4px;

  /* Type scale */
  --f-display: "Instrument Serif", "Bricolage Grotesque", serif;
  --f-grotesk: "Bricolage Grotesque", "Geist", system-ui, sans-serif;
  --f-body: "Geist", system-ui, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, monospace;
}

[data-theme="light"] {
  --bg: #f5f2ea;
  --bg-2: #eeeae0;
  --bg-3: #e4ded0;
  --ink: #15171c;
  --ink-2: #45474f;
  --ink-3: #8b8a85;
  --line: #d6d0c0;
  --line-2: #e8e3d6;
  --accent: #0a8f6a;
  --accent-2: #c2410c;
}

[data-accent="cyan"] {
  --accent: #5cf0d4;
  --accent-2: #ffb547;
}
[data-accent="violet"] {
  --accent: #b794ff;
  --accent-2: #ff8c5a;
}
[data-accent="lime"] {
  --accent: #c5f74e;
  --accent-2: #ff6b9d;
}
[data-accent="amber"] {
  --accent: #ffb547;
  --accent-2: #6ec1ff;
}

/* ---- RESET ---- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  height: 100%;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}
body {
  font-family: var(--f-body);
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01", "ss02", "cv11";
  line-height: 1.5;
  overflow-x: hidden;
}
#root {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, textarea { font: inherit; color: inherit; background: none; border: none; outline: none; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
::selection { background: var(--accent); color: #000; }

/* ---- UTILITIES ---- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.eyebrow {
  font-family: var(--f-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--ink-3);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--ink-3);
}
.display {
  font-family: var(--f-display);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 0.98;
  text-wrap: balance;
}
.mono { font-family: var(--f-mono); }
.serif-em {
  font-family: var(--f-display);
  font-style: italic;
  font-weight: 400;
}

/* ---- BUTTON ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: 999px;
  font-family: var(--f-grotesk);
  font-weight: 500;
  font-size: 15px;
  border: 1px solid var(--line);
  transition: all 180ms ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}
.btn-primary {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}
.btn-primary:hover { background: var(--accent); color: #000; border-color: var(--accent); }
.btn-accent {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
}
.btn-accent:hover { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.btn-people {
  background: var(--accent-2);
  color: #000;
  border-color: var(--accent-2);
}
.btn-people:hover {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}
.btn-ghost { color: var(--ink-2); }
.btn-ghost:hover { color: var(--ink); border-color: var(--ink-2); }
.btn .arrow { transition: transform 220ms ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* ---- NAV ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  border-bottom: 1px solid var(--line-2);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-grotesk);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.01em;
}
.logo-mark {
  width: 28px; height: 28px;
  display: grid; place-items: center;
  position: relative;
}
.logo-mark svg { width: 100%; height: 100%; }
.nav-links {
  display: flex;
  gap: 28px;
  font-size: 14px;
  color: var(--ink-2);
}
.nav-links a { transition: color 160ms ease; position: relative; }
.nav-links a:hover { color: var(--ink); }
.nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
}
.lang-switch {
  display: flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px;
  font-family: var(--f-mono);
  font-size: 11px;
  font-weight: 500;
}
.lang-switch button {
  padding: 5px 10px;
  border-radius: 999px;
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: all 150ms ease;
}
.lang-switch button.active {
  background: var(--ink);
  color: var(--bg);
}

@media (max-width: 880px) {
  .nav-links { display: none; }
}

/* ---- HERO ---- */
.hero {
  position: relative;
  padding: clamp(48px, 8vw, 96px) 0 clamp(40px, 6vw, 80px);
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 5vw, 60px);
}
.hero-kicker {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line-2);
}
.hero-kicker .live {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.hero-kicker .live::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 80%, transparent);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 80%, transparent); }
  70% { box-shadow: 0 0 0 8px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}
.hero h1 {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(48px, 7.6vw, 116px);
  line-height: 0.95;
  letter-spacing: -0.025em;
  text-wrap: balance;
}
.hero h1 em {
  font-style: italic;
  color: var(--accent);
}
.hero-meta {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(28px, 5vw, 60px);
  align-items: end;
  padding-top: 28px;
  border-top: 1px solid var(--line-2);
}
.hero-sub {
  font-size: clamp(16px, 1.4vw, 19px);
  color: var(--ink-2);
  max-width: 56ch;
  line-height: 1.55;
}
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.hero-stat .n {
  font-family: var(--f-display);
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1;
  letter-spacing: -0.02em;
  display: block;
  margin-bottom: 8px;
}
.hero-stat .l {
  font-family: var(--f-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-3);
}

@media (max-width: 760px) {
  .hero-meta { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: 1fr 1fr 1fr; }
}

/* ---- SECTION ---- */
.section {
  padding: clamp(56px, 8vw, 120px) 0;
  position: relative;
}
.section-head {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: clamp(32px, 5vw, 60px);
  margin-bottom: clamp(40px, 6vw, 80px);
  align-items: end;
}
.section-head h2 {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(34px, 4.5vw, 64px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  text-wrap: balance;
}
.section-head .lead {
  color: var(--ink-2);
  font-size: 17px;
  max-width: 50ch;
  margin-top: 12px;
}
@media (max-width: 760px) {
  .section-head { grid-template-columns: 1fr; align-items: start; }
}

/* ---- DEMO (live AI) ---- */
.demo {
  background: var(--bg-2);
  border-top: 1px solid var(--line-2);
  border-bottom: 1px solid var(--line-2);
}
.demo-shell {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}
.demo-left h3 {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.demo-left .sub {
  color: var(--ink-2);
  margin: 16px 0 28px;
}
.demo-suggestions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-top: 1px solid var(--line-2);
  padding-top: 16px;
}
.demo-suggestions-title {
  font-family: var(--f-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-3);
  margin-bottom: 4px;
}
.suggest {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-align: left;
  font-size: 14px;
  color: var(--ink-2);
  transition: all 160ms ease;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg);
}
.suggest::before {
  content: "→";
  font-family: var(--f-mono);
  color: var(--ink-3);
  transition: color 160ms ease;
}
.suggest:hover {
  border-color: var(--accent);
  color: var(--ink);
}
.suggest:hover::before { color: var(--accent); }
.suggest:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.suggest:disabled:hover {
  border-color: var(--line);
  color: var(--ink-2);
}

.demo-chat {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  min-height: 520px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.chat-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line-2);
  font-family: var(--f-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-3);
}
.chat-head .dots {
  display: flex;
  gap: 6px;
}
.chat-head .dots span {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--line);
}
.chat-head .dots span:first-child { background: var(--accent); }
.chat-body {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-height: 480px;
}
.msg {
  max-width: 92%;
  font-size: 15px;
  line-height: 1.55;
}
.msg-ai {
  align-self: flex-start;
  color: var(--ink);
}
.msg-ai .badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--f-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 6px;
}
.msg-ai .badge::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
}
.msg-user {
  align-self: flex-end;
  background: var(--ink);
  color: var(--bg);
  padding: 10px 14px;
  border-radius: 14px 14px 4px 14px;
}
.msg-text { white-space: pre-wrap; }
.thinking {
  display: inline-flex;
  gap: 4px;
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--ink-3);
}
.thinking::after {
  content: "";
  width: 18px;
  display: inline-block;
  animation: dots 1.5s infinite steps(4);
}
@keyframes dots {
  0% { content: ""; }
  25% { content: "."; }
  50% { content: ".."; }
  75% { content: "..."; }
}
.chat-form {
  display: flex;
  border-top: 1px solid var(--line-2);
  padding: 8px;
  gap: 8px;
}
.chat-input {
  flex: 1;
  padding: 12px 14px;
  font-size: 15px;
  border-radius: 6px;
}
.chat-send {
  padding: 0 20px;
  background: var(--accent);
  color: #000;
  border-radius: 6px;
  font-weight: 500;
  font-size: 14px;
  transition: opacity 160ms ease;
}
.chat-send:disabled { opacity: 0.4; cursor: not-allowed; }
.chat-reset {
  padding: 0 12px;
  font-size: 12px;
  color: var(--ink-3);
  font-family: var(--f-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

@media (max-width: 880px) {
  .demo-shell { grid-template-columns: 1fr; }
}

/* ---- SERVICES ---- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.service {
  padding: clamp(28px, 3.5vw, 44px);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 18px;
  position: relative;
  transition: background 180ms ease;
}
.service:hover { background: var(--bg-2); }
.service-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.service .n {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.1em;
}
.service h3 {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(24px, 2.4vw, 32px);
  line-height: 1.1;
  letter-spacing: -0.015em;
}
.service p {
  color: var(--ink-2);
  max-width: 42ch;
  font-size: 15.5px;
  line-height: 1.55;
}
.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}
.tag {
  font-family: var(--f-mono);
  font-size: 11px;
  padding: 4px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

@media (max-width: 760px) {
  .services-grid { grid-template-columns: 1fr; }
}

/* ---- SPLIT (business / people) ---- */
.split-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 36px;
  border-bottom: 1px solid var(--line-2);
}
.split-tab {
  padding: 14px 20px;
  font-family: var(--f-grotesk);
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-3);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all 160ms ease;
}
.split-tab.active { color: var(--ink); border-bottom-color: var(--accent); }
.split-tab[data-side="people"].active { border-bottom-color: var(--accent-2); }

.split-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(28px, 5vw, 60px);
  align-items: start;
}
.split-left h3 {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(28px, 3.2vw, 44px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}
.split-left .cta-wrap { margin-top: 28px; }

.split-points {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.split-point {
  padding: 24px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.split-point .marker {
  width: 24px; height: 24px;
  display: grid; place-items: center;
  border-radius: 999px;
  background: var(--accent);
  color: #000;
  font-family: var(--f-mono);
  font-size: 12px;
  font-weight: 600;
}
.split-point[data-side="people"] .marker { background: var(--accent-2); }
.split-point h4 {
  font-family: var(--f-grotesk);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.005em;
}
.split-point p {
  color: var(--ink-2);
  font-size: 14.5px;
  line-height: 1.55;
}

@media (max-width: 880px) {
  .split-grid { grid-template-columns: 1fr; }
  .split-points { grid-template-columns: 1fr; }
}

/* ---- CASES ---- */
.cases {
  background: var(--bg-2);
  border-top: 1px solid var(--line-2);
  border-bottom: 1px solid var(--line-2);
}
.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(16px, 2vw, 24px);
}
.case {
  background: var(--bg);
  border: 1px solid var(--line);
  padding: clamp(24px, 3vw, 36px);
  display: flex;
  flex-direction: column;
  gap: 16px;
  border-radius: var(--radius);
  position: relative;
  transition: border-color 160ms ease;
}
.case:hover { border-color: var(--accent); }
.case-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.case-tag {
  font-family: var(--f-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-3);
}
.case h3 {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(22px, 2.2vw, 30px);
  line-height: 1.1;
  letter-spacing: -0.015em;
}
.case-metric {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 0;
  border-top: 1px dashed var(--line);
  border-bottom: 1px dashed var(--line);
}
.case-metric .m {
  font-family: var(--f-display);
  font-size: clamp(36px, 4vw, 56px);
  line-height: 1;
  color: var(--accent);
  letter-spacing: -0.02em;
}
.case-metric .ml {
  font-family: var(--f-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-3);
  max-width: 18ch;
}
.case p {
  color: var(--ink-2);
  font-size: 14.5px;
  line-height: 1.6;
}

@media (max-width: 760px) {
  .cases-grid { grid-template-columns: 1fr; }
}

/* ---- TECH ---- */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.tech-col {
  padding: 28px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.tech-col h4 {
  font-family: var(--f-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-3);
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-2);
}
.tech-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.tech-col li {
  font-family: var(--f-grotesk);
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.tech-col li::before {
  content: "";
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
}

@media (max-width: 880px) {
  .tech-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 540px) {
  .tech-grid { grid-template-columns: 1fr; }
}

/* ---- METRICS TICKER ---- */
.metrics {
  border-top: 1px solid var(--line-2);
  border-bottom: 1px solid var(--line-2);
  padding: 36px 0;
}
.metrics-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.metric {
  display: flex;
  align-items: baseline;
  gap: 14px;
}
.metric .n {
  font-family: var(--f-display);
  font-size: clamp(36px, 4.4vw, 60px);
  line-height: 1;
  letter-spacing: -0.02em;
}
.metric .l {
  font-family: var(--f-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-3);
  max-width: 14ch;
}
@media (max-width: 760px) {
  .metrics-row { grid-template-columns: 1fr 1fr; gap: 20px; }
}

/* ---- TELEGRAM ---- */
.tg {
  position: relative;
}
.tg-shell {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(28px, 5vw, 60px);
  align-items: start;
}
.tg-left h2 {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(36px, 4.6vw, 64px);
  line-height: 1.02;
  letter-spacing: -0.02em;
}
.tg-left .sub {
  color: var(--ink-2);
  font-size: 17px;
  max-width: 50ch;
  margin: 18px 0 28px;
}
.tg-meta {
  font-family: var(--f-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-3);
  margin-top: 16px;
}
.tg-samples {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--line);
}
.tg-sample {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: 20px;
  align-items: center;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  transition: padding-left 200ms ease;
  cursor: pointer;
}
.tg-sample:hover { padding-left: 12px; }
.tg-sample .d {
  font-family: var(--f-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-3);
}
.tg-sample .t {
  color: var(--ink);
  line-height: 1.4;
}
.tg-sample .arr {
  font-family: var(--f-mono);
  color: var(--ink-3);
  transition: transform 200ms ease, color 200ms ease;
}
.tg-sample:hover .arr { transform: translateX(4px); color: var(--accent); }
.tg-samples-title {
  font-family: var(--f-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-3);
  margin-bottom: 18px;
}

@media (max-width: 880px) {
  .tg-shell { grid-template-columns: 1fr; }
  .tg-sample { grid-template-columns: 60px 1fr auto; gap: 14px; }
}

/* ---- CONTACT ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(28px, 5vw, 60px);
  align-items: start;
}
.contact-left h2 {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(36px, 4.6vw, 64px);
  line-height: 1.02;
  letter-spacing: -0.02em;
}
.contact-left .sub {
  color: var(--ink-2);
  font-size: 17px;
  max-width: 46ch;
  margin: 16px 0 28px;
}
.contact-or {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--line-2);
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.contact-or .label {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.form {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  padding: clamp(20px, 3vw, 32px);
  border-radius: 6px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-2);
}
.field:last-of-type { border-bottom: none; }
.field label {
  font-family: var(--f-mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-3);
}
.field input, .field textarea {
  font-family: var(--f-grotesk);
  font-size: 16px;
  color: var(--ink);
  padding: 4px 0;
  border: none;
  background: transparent;
}
.field textarea { resize: vertical; min-height: 64px; }
.form .submit {
  margin-top: 16px;
  width: 100%;
  justify-content: center;
}
.form-success {
  padding: 32px;
  text-align: center;
  font-family: var(--f-display);
  font-size: 24px;
  color: var(--accent);
}

@media (max-width: 880px) {
  .contact-grid { grid-template-columns: 1fr; }
}

/* ---- FOOTER ---- */
footer {
  border-top: 1px solid var(--line-2);
  padding: 40px 0 60px;
}
.foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-family: var(--f-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-3);
}
.foot-links {
  display: flex;
  gap: 18px;
}
.foot-links a:hover { color: var(--ink); }

/* ---- HERO ORB / VISUAL ---- */
.hero-visual {
  position: absolute;
  top: 50%;
  right: -120px;
  transform: translateY(-50%);
  width: 520px;
  height: 520px;
  pointer-events: none;
  opacity: 0.85;
  z-index: 0;
}
.hero-orb-svg { width: 100%; height: 100%; }
@media (max-width: 1100px) { .hero-visual { display: none; } }

/* Scroll-marquee tags rail */
.rail {
  border-top: 1px solid var(--line-2);
  border-bottom: 1px solid var(--line-2);
  padding: 18px 0;
  overflow: hidden;
  background: var(--bg);
}
.rail-track {
  display: flex;
  gap: 48px;
  white-space: nowrap;
  animation: rail 40s linear infinite;
  font-family: var(--f-display);
  font-size: 22px;
  color: var(--ink-2);
  font-style: italic;
}
.rail-track span { display: inline-flex; align-items: center; gap: 48px; }
.rail-track span::after {
  content: "✦";
  color: var(--accent);
  font-style: normal;
  font-family: var(--f-grotesk);
  font-size: 14px;
}
@keyframes rail {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

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

@media (max-width: 560px) {
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }
  .nav-inner { gap: 12px; }
  .logo span { display: none; }
  .nav-right .btn-primary { display: none; }
  .hero-grid,
  .hero-meta,
  .hero h1,
  .hero-sub {
    min-width: 0;
    max-width: 100%;
  }
  .hero-kicker .live { display: none; }
  .hero h1 {
    font-size: clamp(34px, 10.2vw, 44px);
    line-height: 1.02;
    text-wrap: auto;
    overflow-wrap: anywhere;
    word-break: break-word;
    hyphens: auto;
  }
  .hero-title-a,
  .hero-title-em-word,
  .hero-title-b,
  .hero-title-b-line {
    display: block;
  }
  .hero h1 em {
    display: block;
  }
  .hero-sub,
  .demo-left .sub,
  .contact-left .sub,
  .tg-left .sub,
  .service p,
  .case p,
  .split-point p,
  .section-head .lead {
    max-width: 30ch;
    overflow-wrap: anywhere;
    word-break: break-word;
  }
  .service h3,
  .case h3,
  .split-left h3,
  .section-head h2,
  .tg-left h2,
  .contact-left h2,
  .demo-left h3 {
    max-width: 16ch;
    overflow-wrap: anywhere;
  }
  .hero-ctas {
    max-width: calc(100vw - 40px);
  }
  .hero-stats { grid-template-columns: 1fr; }
  .btn { width: 100%; justify-content: center; }
  .lang-switch button { padding: 5px 9px; }
  .chat-head { gap: 12px; }
  .chat-head > span { display: none; }
  .chat-form { flex-direction: column; }
  .chat-send { min-height: 44px; }
  .metrics-row { grid-template-columns: 1fr; }
  .metric { justify-content: space-between; }
  .tg-sample { grid-template-columns: 1fr auto; }
  .tg-sample .d { grid-column: 1 / -1; }
}