:root {
  --white: #ffffff;
  --ink: #0a0a0f;
  --ink-2: #1e1b2e;
  --muted: #5e5a6f;
  --line: #e8e4f0;
  --line-strong: #d4cce8;
  --violet-950: #2e1065;
  --violet-900: #4c1d95;
  --violet-800: #5b21b6;
  --violet-700: #6d28d9;
  --violet-600: #7c3aed;
  --violet-500: #8b5cf6;
  --indigo: #4f46e5;
  --gradient: linear-gradient(128deg, var(--violet-900) 0%, var(--violet-700) 55%, var(--violet-600) 100%);
  --gradient-deep: linear-gradient(135deg, #2e1065 0%, #5b21b6 50%, #6d28d9 100%);
  --shadow-hard: 6px 6px 0 var(--violet-900);
  --shadow-hard-sm: 4px 4px 0 var(--violet-800);
  --radius: 0;
  --radius-sm: 2px;
  --header-h: 72px;
  --font: "IBM Plex Sans", system-ui, sans-serif;
  --display: "Syne", system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }
ul { margin: 0; padding: 0; list-style: none; }

.container {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
}

/* ─── Grid texture ─── */
.page-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, #000 0%, #000 40%, transparent 100%);
  opacity: 0.55;
}

/* ─── Header ─── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 2px solid var(--ink);
  backdrop-filter: blur(8px);
}

.site-header.is-scrolled {
  box-shadow: 0 4px 0 var(--violet-900);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 32px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.logo-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  background: var(--gradient);
  color: #fff;
  font-family: var(--display);
  font-size: 1rem;
  font-weight: 800;
}

.nav {
  display: flex;
  gap: 32px;
  margin-left: auto;
}

.nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.01em;
  transition: color 0.15s;
}

.nav a:hover { color: var(--violet-800); }

.header-actions {
  display: flex;
  gap: 8px;
}

.burger {
  display: none;
  width: 44px;
  height: 44px;
  margin-left: auto;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  border: 2px solid var(--ink);
}

.burger span {
  width: 20px;
  height: 2px;
  background: var(--ink);
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 2px solid transparent;
  transition: transform 0.15s, box-shadow 0.15s;
}

.btn:hover { transform: translate(-2px, -2px); }

.btn-primary {
  color: #fff;
  background: var(--gradient);
  border-color: var(--violet-900);
  box-shadow: var(--shadow-hard-sm);
}

.btn-primary:hover {
  box-shadow: 8px 8px 0 var(--violet-900);
}

.btn-ghost {
  color: var(--violet-800);
  background: var(--white);
  border-color: var(--line-strong);
}

.btn-ghost:hover {
  border-color: var(--violet-700);
  box-shadow: var(--shadow-hard-sm);
}

.btn-outline {
  color: var(--ink);
  background: var(--white);
  border: 2px solid var(--ink);
}

.btn-outline:hover {
  background: var(--violet-950);
  color: #fff;
  border-color: var(--violet-950);
}

.btn-lg { padding: 15px 28px; font-size: 0.95rem; }
.btn-block { width: 100%; }

/* ─── Sections ─── */
.section {
  position: relative;
  z-index: 1;
  padding: 96px 0;
}

.section-alt {
  background: var(--white);
  border-top: 2px solid var(--line);
  border-bottom: 2px solid var(--line);
}

.section-head {
  max-width: 640px;
  margin-bottom: 56px;
}

.section-head h2 {
  margin: 0 0 16px;
  font-family: var(--display);
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  text-transform: uppercase;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 52ch;
}

/* ─── Hero ─── */
.hero {
  padding-top: 56px;
  padding-bottom: 80px;
  border-bottom: 2px solid var(--ink);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.hero-tag {
  display: inline-block;
  margin: 0 0 24px;
  padding: 6px 12px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--violet-800);
  border: 2px solid var(--violet-800);
  background: var(--white);
}

.hero h1 {
  margin: 0 0 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.brand {
  font-family: var(--display);
  font-size: clamp(2rem, 5.5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.04em;
  text-transform: none;
  background: var(--gradient-deep);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-line {
  font-family: var(--display);
  font-size: clamp(1.25rem, 2.8vw, 1.85rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: var(--ink);
  max-width: 28ch;
}

.lead {
  margin: 0 0 32px;
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 46ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
}

.hero-stats {
  display: flex;
  gap: 0;
  border: 2px solid var(--ink);
}

.hero-stats li {
  flex: 1;
  padding: 16px 20px;
  border-right: 2px solid var(--ink);
  background: var(--white);
}

.hero-stats li:last-child { border-right: none; }

.stat-n {
  display: block;
  font-family: var(--display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--violet-800);
  line-height: 1;
  margin-bottom: 4px;
}

.stat-l {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ─── Chat mock ─── */
.chat-window {
  border: 2px solid var(--ink);
  background: var(--white);
  box-shadow: 12px 12px 0 var(--violet-900);
}

.chat-top {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--ink);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.chat-top .dot {
  width: 8px;
  height: 8px;
  background: var(--violet-500);
}

.chat-title { margin-left: 4px; }

.chat-body {
  padding: 20px;
  min-height: 280px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: var(--white);
}

.msg {
  max-width: 90%;
  padding: 12px 14px;
  font-size: 0.88rem;
  line-height: 1.5;
  border: 2px solid var(--line-strong);
}

.msg-user {
  align-self: flex-end;
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

.msg-ai {
  align-self: flex-start;
  background: var(--white);
  border-left: 4px solid var(--violet-700);
  color: var(--ink-2);
}

.msg-ai.typing {
  display: inline-flex;
  gap: 5px;
  align-items: center;
  min-width: 56px;
  border-left-width: 4px;
}

.msg-ai.typing span {
  width: 6px;
  height: 6px;
  background: var(--violet-700);
  animation: pulse 1s infinite;
}

.msg-ai.typing span:nth-child(2) { animation-delay: 0.15s; }
.msg-ai.typing span:nth-child(3) { animation-delay: 0.3s; }

@keyframes pulse {
  0%, 100% { opacity: 0.2; }
  50% { opacity: 1; }
}

.chat-input {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-top: 2px solid var(--ink);
  background: #fafafa;
}

.chat-input span {
  font-size: 0.85rem;
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
}

.chat-input button {
  width: 40px;
  height: 40px;
  background: var(--gradient);
  color: #fff;
  font-size: 1.1rem;
  border: 2px solid var(--violet-900);
}

/* ─── Panels ─── */
.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 2px solid var(--ink);
}

.panel-card {
  padding: 36px 32px;
  background: var(--white);
  border-right: 2px solid var(--ink);
}

.panel-card:last-child { border-right: none; }

.panel-card--dark {
  background: var(--gradient-deep);
  color: #fff;
}

.panel-card--dark p { color: rgba(255, 255, 255, 0.78); }
.panel-card--dark .card-label { color: rgba(255, 255, 255, 0.6); border-color: rgba(255,255,255,0.3); }

.panel-card h2 {
  margin: 0 0 14px;
  font-family: var(--display);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.panel-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.card-label {
  display: inline-block;
  margin-bottom: 20px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  padding-bottom: 8px;
  border-bottom: 2px solid var(--line-strong);
}

.card-label--accent {
  color: var(--violet-800);
  border-color: var(--violet-700);
}

/* ─── CTA band ─── */
.cta-band {
  padding: 0;
  background: var(--gradient-deep);
  border-bottom: 2px solid var(--ink);
}

.cta-band-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 48px 0;
  color: #fff;
}

.cta-band-inner h2 {
  margin: 0 0 10px;
  font-family: var(--display);
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  max-width: 20ch;
}

.cta-band-inner p {
  margin: 0;
  opacity: 0.8;
  font-size: 0.95rem;
}

.cta-band-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  flex-shrink: 0;
}

.cta-band .btn-primary {
  background: #fff;
  color: var(--violet-900);
  border-color: #fff;
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.25);
}

.cta-band .btn-ghost {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.5);
  background: transparent;
}

.cta-band .btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  box-shadow: none;
  transform: none;
}

/* ─── Features bento ─── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 2px solid var(--ink);
}

.feature-card {
  position: relative;
  padding: 28px 24px 24px;
  background: var(--white);
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transition: background 0.15s;
}

.feature-card:nth-child(3n) { border-right: none; }
.feature-card:nth-last-child(-n+3) { border-bottom: none; }

.feature-card:hover {
  background: #faf8ff;
}

.feature-num {
  display: block;
  margin-bottom: 16px;
  font-family: var(--display);
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1;
  color: var(--line-strong);
  letter-spacing: -0.04em;
}

.feature-card:hover .feature-num {
  color: var(--violet-700);
}

.feature-card h3 {
  margin: 0 0 8px;
  font-family: var(--display);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.feature-card p {
  margin: 0 0 18px;
  font-size: 0.88rem;
  color: var(--muted);
}

.mini-chat {
  padding: 12px;
  border: 2px solid var(--line-strong);
  background: #fafafa;
  font-family: "IBM Plex Mono", "Courier New", monospace;
  font-size: 0.78rem;
}

.mini-prompt {
  color: var(--muted);
  margin-bottom: 10px;
  min-height: 36px;
}

.mini-prompt::before {
  content: "> ";
  color: var(--violet-800);
  font-weight: 700;
}

.mini-send {
  width: 100%;
  padding: 8px;
  font-family: var(--font);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--white);
  background: var(--violet-800);
  border: 2px solid var(--violet-900);
}

/* ─── Capabilities ─── */
.caps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.cap-card {
  padding: 24px;
  border: 2px solid var(--ink);
  background: var(--white);
  transition: box-shadow 0.15s, transform 0.15s;
}

.cap-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-hard-sm);
}

.cap-num {
  font-family: var(--display);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--violet-700);
  margin-bottom: 12px;
}

.cap-card h3 {
  margin: 0 0 8px;
  font-family: var(--display);
  font-size: 1rem;
  font-weight: 800;
}

.cap-card p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
}

/* ─── Pricing ─── */
.pricing-card {
  max-width: 420px;
  margin: 0 auto;
  padding: 0;
  border: 2px solid var(--ink);
  background: var(--white);
  box-shadow: 12px 12px 0 var(--violet-900);
}

.pricing-top {
  padding: 36px 32px 28px;
  border-bottom: 2px solid var(--ink);
  background: var(--white);
}

.pricing-badge {
  display: inline-block;
  padding: 4px 10px;
  font-family: var(--display);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: #fff;
  background: var(--gradient);
  border: 2px solid var(--violet-900);
}

.pricing-top h3 {
  margin: 16px 0 20px;
  font-family: var(--display);
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

.price {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}

.price-value {
  font-family: var(--display);
  font-size: 3.2rem;
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 1;
  color: var(--violet-900);
}

.price-period {
  font-size: 0.95rem;
  color: var(--muted);
  font-weight: 500;
}

.price-note {
  margin: 12px 0 0;
  font-size: 0.82rem;
  color: var(--muted);
}

.pricing-list {
  margin: 0;
  padding: 24px 32px;
  display: grid;
  gap: 12px;
}

.pricing-list li {
  padding-left: 20px;
  position: relative;
  font-size: 0.92rem;
  color: var(--ink-2);
}

.pricing-list li::before {
  content: "■";
  position: absolute;
  left: 0;
  color: var(--violet-700);
  font-size: 0.6rem;
  top: 0.35em;
}

.pricing-card .btn-block {
  margin: 0 32px 32px;
  width: calc(100% - 64px);
}

/* ─── Tech ─── */
.tech-grid { display: grid; gap: 24px; }

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border: 2px solid var(--ink);
}

.tech-tags span {
  padding: 12px 18px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--white);
  border-right: 2px solid var(--ink);
}

.tech-tags span:last-child { border-right: none; }

.tech-tags span:hover {
  background: var(--violet-900);
  color: #fff;
}

.tech-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.tech-cards .panel-card {
  border: 2px solid var(--ink);
  border-right: 2px solid var(--ink);
}

.tech-cards h3 {
  margin: 0 0 14px;
  font-family: var(--display);
  font-size: 1.1rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.tech-cards ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 0.9rem;
}

.tech-cards li { margin-bottom: 8px; }

/* ─── Footer ─── */
.site-footer {
  position: relative;
  z-index: 1;
  padding: 40px 0 48px;
  border-top: 2px solid var(--ink);
  background: var(--white);
}

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

.footer-copy {
  margin: 14px 0 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-links a {
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--muted);
}

.footer-links a:hover { color: var(--violet-800); }

/* ─── Reveal ─── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }

/* ─── Responsive ─── */
@media (max-width: 980px) {
  .hero-grid,
  .split-grid,
  .feature-grid,
  .caps-grid,
  .tech-cards {
    grid-template-columns: 1fr;
  }

  .panel-card,
  .feature-card {
    border-right: none !important;
    border-bottom: 2px solid var(--ink) !important;
  }

  .feature-card:last-child { border-bottom: none !important; }

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

  .nav,
  .header-actions { display: none; }

  .burger { display: flex; }

  .nav.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    padding: 20px 24px;
    background: var(--white);
    border-bottom: 2px solid var(--ink);
    gap: 16px;
  }

  .hero-stats { flex-direction: column; }

  .hero-stats li {
    border-right: none;
    border-bottom: 2px solid var(--ink);
  }

  .hero-stats li:last-child { border-bottom: none; }

  .tech-tags span {
    border-right: none;
    border-bottom: 2px solid var(--ink);
    flex: 1 1 45%;
  }
}

@media (max-width: 640px) {
  .section { padding: 72px 0; }
  .hero { padding-top: 32px; }
  .footer-grid { flex-direction: column; }
  .brand { font-size: 1.85rem; }
}