*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #fdf8f2;
  --surface: #fff8ee;
  --card: #ffffff;
  --accent: #b07820;
  --accent2: #8a5c10;
  --text: #2a1f0e;
  --muted: #7a6650;
  --radius: 12px;
  --max: 680px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
}

/* ── Layout ── */
.container { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* ── Header ── */
header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(253,248,242,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(176,120,32,0.15);
  padding: 12px 20px;
  display: flex; align-items: center; justify-content: space-between;
}
.logo { font-size: 1.05rem; font-weight: 600; color: var(--accent2); }
.lang-switch { display: flex; gap: 6px; }
.lang-switch button {
  background: none; border: 1px solid var(--muted);
  color: var(--muted); border-radius: 6px;
  padding: 4px 10px; font-size: 0.8rem; cursor: pointer;
  transition: all 0.2s;
}
.lang-switch button.active,
.lang-switch button:hover {
  border-color: var(--accent); color: var(--accent);
}

/* ── Hero ── */
.hero {
  text-align: center;
  padding: 56px 20px 48px;
  background: radial-gradient(ellipse at 50% 0%, rgba(176,120,32,0.08) 0%, transparent 70%);
}
.hero-icon { margin-bottom: 16px; }
.bot-avatar {
  width: 96px; height: 96px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 4px 16px rgba(176,120,32,0.3);
  border: 3px solid rgba(176,120,32,0.25);
}
.hero h1 { font-size: clamp(1.6rem, 5vw, 2.2rem); font-weight: 700; color: var(--accent2); margin-bottom: 12px; }
.hero p { font-size: 1rem; color: var(--muted); max-width: 480px; margin: 0 auto 28px; }
.btn-primary {
  display: inline-block;
  background: var(--accent); color: #fff;
  font-weight: 700; font-size: 1rem;
  padding: 14px 32px; border-radius: 999px;
  text-decoration: none; transition: background 0.2s;
}
.btn-primary:hover { background: var(--accent2); }
.btn-disabled {
  display: inline-block;
  background: #d0c8bc; color: #8a7f72;
  font-weight: 600; font-size: 1rem;
  padding: 14px 32px; border-radius: 999px;
  cursor: not-allowed;
}

/* ── Sections ── */
section { padding: 48px 0; border-top: 1px solid rgba(176,120,32,0.12); }
section h2 { font-size: 1.25rem; color: var(--accent); margin-bottom: 20px; font-weight: 600; }

/* ── About ── */
.about p { color: var(--muted); margin-bottom: 12px; }
.about p:last-child { margin-bottom: 0; }

/* ── How to use ── */
.steps { display: flex; flex-direction: column; gap: 16px; }
.step {
  background: var(--card); border-radius: var(--radius);
  padding: 16px 20px; display: flex; gap: 14px; align-items: flex-start;
}
.step-num {
  background: var(--accent); color: #1a1209;
  font-weight: 700; border-radius: 50%;
  width: 28px; height: 28px; min-width: 28px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem;
}
.step-body strong { display: block; margin-bottom: 4px; font-size: 0.95rem; }
.step-body span { font-size: 0.88rem; color: var(--muted); }

/* ── Examples ── */
.examples { display: flex; flex-direction: column; gap: 20px; }
.example-card {
  background: var(--card); border-radius: var(--radius);
  border: 1px solid rgba(176,120,32,0.15); overflow: hidden;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}
.example-q {
  padding: 14px 18px;
  background: rgba(176,120,32,0.07);
  font-style: italic; font-size: 0.95rem; color: var(--accent);
  border-bottom: 1px solid rgba(176,120,32,0.1);
}
.example-q::before { content: "❓ "; }
.example-a {
  padding: 14px 18px; font-size: 0.88rem; color: var(--muted); line-height: 1.65;
}
.example-a blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 12px; margin: 10px 0;
  color: var(--text); font-style: italic; font-size: 0.86rem;
}

/* ── Stats ── */
.stats-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
}
.stat-card {
  background: var(--card); border-radius: var(--radius);
  padding: 20px 16px; text-align: center;
}
.stat-num { font-size: 2rem; font-weight: 700; color: var(--accent2); display: block; }
.stat-label { font-size: 0.8rem; color: var(--muted); margin-top: 4px; display: block; }

/* ── Footer ── */
footer {
  text-align: center; padding: 32px 20px;
  border-top: 1px solid rgba(176,120,32,0.12);
  color: var(--muted); font-size: 0.85rem;
}
footer a { color: var(--accent); text-decoration: none; }

/* ── Beta badge ── */
.beta-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(176,120,32,0.1);
  border: 1px solid rgba(176,120,32,0.3);
  color: var(--accent);
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.04em;
  padding: 3px 10px; border-radius: 999px;
  margin-bottom: 16px;
}

/* ── Utils ── */
[data-lang] { display: none; }
[data-lang].active { display: block; }
.inline-lang { display: none; }
.inline-lang.active { display: inline; }

@media (min-width: 480px) {
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
}