:root {
  --bg: #0a0f14;
  --bg-elevated: #111b21;
  --panel: #152028;
  --border: rgba(255, 255, 255, 0.08);
  --accent: #00a884;
  --accent-dim: #008f6f;
  --accent-glow: rgba(0, 168, 132, 0.22);
  --text: #e9edef;
  --text-soft: #aebac1;
  --muted: #667781;
  --font-body: "DM Sans", system-ui, sans-serif;
  --font-display: "Fraunces", Georgia, serif;
  --radius: 12px;
  --radius-lg: 20px;
  --container: min(1120px, calc(100% - 2.5rem));
  --header-h: 4.25rem;
}

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

html {
  scroll-behavior: smooth;
  overflow-x: clip;
  max-width: 100%;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
  max-width: 100%;
}

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

a { color: inherit; text-decoration: none; }

.skip-link {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 200;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #fff;
  border-radius: 0 0 var(--radius) 0;
  transform: translateY(-100%);
  transition: transform 0.15s;
}
.skip-link:focus { transform: translateY(0); }

.container {
  width: var(--container);
  max-width: 100%;
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  border-bottom: 1px solid var(--border);
  background: rgba(10, 15, 20, 0.82);
  backdrop-filter: blur(12px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-shrink: 0;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.brand-mark {
  position: relative;
  flex-shrink: 0;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 22%;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dim) 100%);
  box-shadow: 0 2px 10px color-mix(in srgb, var(--accent) 42%, transparent);
}

.brand-mark::before {
  content: '✦';
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  color: #fff;
  font-size: 1.05rem;
  line-height: 1;
  font-family: system-ui, -apple-system, 'Segoe UI Symbol', 'Noto Sans Symbols2', sans-serif;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  font-size: 0.92rem;
  color: var(--text-soft);
}

.site-nav a:hover { color: var(--text); }

.nav-cta {
  padding: 0.5rem 1rem;
  border-radius: 999px;
  background: var(--accent);
  color: #fff !important;
  font-weight: 600;
  transition: filter 0.15s;
}
.nav-cta:hover { filter: brightness(1.08); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.locale-picker-wrap {
  display: flex;
  align-items: center;
}

.locale-picker {
  appearance: none;
  padding: 0.4rem 1.75rem 0.4rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23aebac1' d='M3 4.5 6 7.5 9 4.5'/%3E%3C/svg%3E") no-repeat right 0.55rem center;
  color: var(--text-soft);
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
}

.locale-picker:hover,
.locale-picker:focus {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.16);
  outline: none;
}

.nav-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  cursor: pointer;
  padding: 0.55rem;
  flex-direction: column;
  justify-content: center;
  gap: 0.35rem;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  transition: transform 0.2s, opacity 0.2s;
}
.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-5px) rotate(-45deg);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.35rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: filter 0.15s, background 0.15s, border-color 0.15s;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 28px var(--accent-glow);
}
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost {
  border-color: var(--border);
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}
.btn-ghost:hover {
  border-color: rgba(0, 168, 132, 0.35);
  background: rgba(0, 168, 132, 0.08);
}
.btn-lg {
  padding: 0.9rem 1.75rem;
  font-size: 1.05rem;
}

/* Hero */
.hero {
  position: relative;
  padding: clamp(3rem, 8vw, 5.5rem) 0 clamp(4rem, 10vw, 6rem);
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  inset: -20% -10% auto;
  height: 70%;
  background:
    radial-gradient(ellipse 60% 50% at 20% 30%, rgba(0, 168, 132, 0.14), transparent 70%),
    radial-gradient(ellipse 50% 40% at 80% 20%, rgba(0, 120, 200, 0.08), transparent 65%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  min-width: 0;
}

.hero-grid > * {
  min-width: 0;
}

.eyebrow {
  margin: 0 0 0.85rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero h1 {
  margin: 0 0 1.1rem;
  font-family: var(--font-display);
  font-size: clamp(2.35rem, 5vw, 3.5rem);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.hero-lead {
  margin: 0 0 1.75rem;
  font-size: 1.08rem;
  line-height: 1.65;
  color: var(--text-soft);
  max-width: 34rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.hero-points {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  font-size: 0.88rem;
  color: var(--muted);
}
.hero-points li::before {
  content: "✓ ";
  color: var(--accent);
  font-weight: 700;
}

/* Preview mock */
.hero-preview {
  perspective: 1200px;
  max-width: 100%;
  min-width: 0;
}

.preview-window {
  max-width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-elevated);
  box-shadow:
    0 24px 60px rgba(0, 0, 0, 0.45),
    0 0 0 1px rgba(255, 255, 255, 0.04) inset;
  transform: rotateY(-4deg) rotateX(2deg);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: rotateY(-4deg) rotateX(2deg) translateY(0); }
  50% { transform: rotateY(-2deg) rotateX(1deg) translateY(-8px); }
}

.preview-toolbar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
}
.preview-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
}
.preview-dot:first-child { background: #ff5f57; }
.preview-dot:nth-child(2) { background: #febc2e; }
.preview-dot:nth-child(3) { background: #28c840; }
.preview-title {
  margin-left: 0.5rem;
  font-size: 0.78rem;
  color: var(--muted);
}

.preview-body {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  min-height: 280px;
  min-width: 0;
}

.preview-chat {
  padding: 1rem;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.preview-bubble {
  max-width: 92%;
  padding: 0.55rem 0.75rem;
  border-radius: 10px;
  font-size: 0.78rem;
  line-height: 1.45;
}
.preview-bubble-user {
  align-self: flex-end;
  background: #005c4b;
  color: #e8f5f0;
}
.preview-bubble-ai {
  background: #1f2c33;
  color: var(--text-soft);
}
.preview-compose {
  margin-top: auto;
  padding: 0.55rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--muted);
}

.preview-manuscript {
  padding: 1rem;
  background: rgba(10, 15, 20, 0.5);
  font-size: 0.78rem;
  line-height: 1.55;
}
.preview-ms-label {
  margin: 0 0 0.5rem;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.preview-ms-chapter {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--text);
}
.preview-ms-prose {
  margin: 0;
  color: var(--text-soft);
}

/* Sections */
.section {
  padding: clamp(3.5rem, 8vw, 5.5rem) 0;
}
.section-alt {
  background: linear-gradient(180deg, transparent, rgba(0, 168, 132, 0.04) 50%, transparent);
  border-block: 1px solid var(--border);
}

.section-head {
  max-width: 36rem;
  margin-bottom: 2.5rem;
}
.section-head h2 {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 4vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}
.section-head p {
  margin: 0;
  color: var(--text-soft);
  font-size: 1.05rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.feature-card {
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: rgba(17, 27, 33, 0.55);
  transition: border-color 0.2s, transform 0.2s;
}
.feature-card:hover {
  border-color: rgba(0, 168, 132, 0.3);
  transform: translateY(-2px);
}
.feature-icon {
  width: 2.25rem;
  height: 2.25rem;
  display: grid;
  place-items: center;
  margin-bottom: 1rem;
  border-radius: 10px;
  background: rgba(0, 168, 132, 0.12);
  color: var(--accent);
  font-size: 1rem;
}
.feature-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  font-weight: 600;
}
.feature-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-soft);
  line-height: 1.55;
}

.steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1.5rem;
  max-width: 40rem;
}
.step {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}
.step-num {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(0, 168, 132, 0.15);
  color: var(--accent);
  font-weight: 700;
  font-size: 0.95rem;
}
.step h3 {
  margin: 0 0 0.35rem;
  font-size: 1.1rem;
}
.step p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.95rem;
}

.cta-band {
  padding-bottom: clamp(4rem, 10vw, 6rem);
}
.cta-inner {
  text-align: center;
  padding: clamp(2.5rem, 6vw, 3.5rem);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(0, 168, 132, 0.25);
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0, 168, 132, 0.12), transparent),
    var(--bg-elevated);
}
.cta-inner h2 {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.25rem);
}
.cta-inner p {
  margin: 0 0 1.5rem;
  color: var(--text-soft);
}

/* Footer */
.site-footer {
  padding: 2rem 0 2.5rem;
  border-top: 1px solid var(--border);
  overflow-x: clip;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 2rem;
  min-width: 0;
  max-width: 100%;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  flex-shrink: 0;
}
.footer-brand img { border-radius: 6px; }
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 1.1rem;
  min-width: 0;
  max-width: 100%;
  font-size: 0.88rem;
  color: var(--text-soft);
}
.footer-nav a {
  white-space: nowrap;
}
.footer-nav a:hover { color: var(--text); }
.footer-note {
  margin: 0;
  margin-left: auto;
  font-size: 0.8rem;
  color: var(--muted);
  min-width: 0;
}

/* Mobile */
@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    min-width: 0;
  }
  .hero-preview {
    order: -1;
    overflow: hidden;
  }
  .preview-window { transform: none; animation: none; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .nav-toggle { display: flex; }
  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.75rem;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.22s, opacity 0.22s;
  }
  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .site-nav a {
    padding: 0.85rem 1rem;
    border-radius: var(--radius);
  }
  .site-nav a:hover { background: rgba(255, 255, 255, 0.04); }
  .nav-cta { text-align: center; margin-top: 0.25rem; }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
  }
  .footer-nav {
    width: 100%;
  }
  .footer-note {
    margin-left: 0;
    width: 100%;
  }
}

@media (max-width: 640px) {
  .preview-body { grid-template-columns: 1fr; }
  .preview-chat { border-right: none; border-bottom: 1px solid var(--border); }
  .feature-grid { grid-template-columns: 1fr; }
  .footer-nav {
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: flex-start;
    gap: 0.45rem;
  }
  .footer-nav a {
    display: block;
    width: 100%;
    padding: 0.2rem 0;
  }
}