/* ── Демо: своя палитра (индиго → бирюза) ── */
:root {
  --accent: #d9583a; --accent-ink: #a83d22; --brand-orange: #1f8a86; --brand-yellow: #f2b84b;
  --brand-grad: linear-gradient(95deg, #d9583a 0%, #ec8a3f 60%, #f2b84b 120%);
  --hero-bg: #123c46; --hero-ink: #ffffff; --hero-soft: rgb(255 255 255 / .12);
}
@media (prefers-color-scheme: dark) { :root:where(:not([data-theme="light"])) { --accent: #f07a5c; --accent-ink: #f59a80; --hero-bg: #0f3039; } }
:root[data-theme="dark"] { --accent: #f07a5c; --accent-ink: #f59a80; --hero-bg: #0f3039; }
.logo-svg { width: 38px; height: 38px; flex: none; }
.demo-badge { display: inline-block; margin-left: 8px; padding: 1px 8px; border-radius: 999px; background: var(--brand-grad); color: #fff; font: 800 10px/18px Montserrat, sans-serif; letter-spacing: .06em; vertical-align: middle; }
#demoToast { position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px); opacity: 0; pointer-events: none;
  background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 10px; font-weight: 700; transition: .25s; z-index: 99; }
#demoToast.on { opacity: 1; transform: translate(-50%, 0); }

/* ── О продукте ── */
#tab-about { display: grid; gap: 16px; }
#tab-about[hidden] { display: none; }
.ab-hero { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 24px; padding: 32px; border-radius: 20px;
  background: var(--hero-bg); color: var(--hero-ink); }
.ab-kicker { font: 800 12px Montserrat, sans-serif; letter-spacing: .08em; text-transform: uppercase; color: var(--brand-yellow); }
.ab-hero h1 { text-wrap: balance; font: 900 clamp(26px, 3.4vw, 40px)/1.12 Montserrat, sans-serif; margin: 10px 0 14px; }
.ab-hero p { font-size: 17px; line-height: 1.55; margin: 0; max-width: 62ch; }
.ab-cta { display: flex; flex-wrap: wrap; gap: 12px 16px; align-items: center; margin-top: 22px; }
.ab-cta .btn { background: var(--accent); color: #fff; border: 0; font-weight: 800; padding: 10px 18px; }
.ab-cta .muted { color: rgb(255 255 255 / .85); font-size: 13px; max-width: 46ch; }
.ab-stats { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; align-content: center; }
.ab-stats li { background: var(--hero-soft); border-radius: 14px; padding: 14px; }
.ab-stats b { display: block; font: 900 26px Montserrat, sans-serif; }
.ab-stats span { font-size: 13px; opacity: .9; }
.ab-grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.ab-list { margin: 8px 0 0; padding-left: 18px; display: grid; gap: 10px; }
.ab-list.check { list-style: none; padding-left: 0; }
.ab-list.check li { padding-left: 28px; position: relative; }
.ab-list.check li::before { content: "✓"; position: absolute; left: 0; top: 0; width: 20px; height: 20px; border-radius: 50%;
  background: var(--good); color: #fff; font: 800 12px/20px Nunito; text-align: center; }
.ab-feat { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 10px; margin-top: 6px; }
.ab-feat button, .ab-feat .ab-off { text-align: left; border: 1px solid var(--line); background: var(--surface-2); color: var(--text); border-radius: 12px;
  padding: 14px; cursor: pointer; font: inherit; display: grid; gap: 6px; transition: .15s; }
.ab-feat button:hover { border-color: var(--accent); transform: translateY(-1px); }
.ab-off { border-style: dashed !important; cursor: default !important; }
.ab-feat b { font: 800 15px Montserrat, sans-serif; color: var(--accent-ink); }
.ab-feat span { font-size: 13.5px; color: var(--text-2); }
.ab-ai { border: 1px solid var(--accent); }
.ab-ai-tag { display: inline-block; margin-bottom: 6px; padding: 2px 10px; border-radius: 999px; background: var(--brand-grad); color: #fff; font: 800 11px/18px Montserrat, sans-serif; letter-spacing: .06em; text-transform: uppercase; }
.ab-ai .ab-feat { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.ab-ai-note { margin: 12px 0 0; font-weight: 700; color: var(--text-2); }
.ab-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.ab-chips span { padding: 6px 12px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--line); font-weight: 700; font-size: 13px; }
.ab-steps { margin: 8px 0 0; padding-left: 20px; display: grid; gap: 8px; }
@media (max-width: 860px) {
  .ab-hero, .ab-grid2 { grid-template-columns: 1fr; }
  .ab-hero { padding: 22px 18px; }
}