/* Лендинг Mentionizer. Токены и решения — docs/site/design.md.
   Файлы из /assets кэшируются на 7 дней (и в Cloudflare): при изменении файла поднимать ?v= во всех ссылках. */

@font-face { font-family: Inter; font-style: normal; font-weight: 400; font-display: swap; src: url("fonts/Inter-Regular.woff2?v=2") format("woff2"); }
@font-face { font-family: Inter; font-style: normal; font-weight: 500; font-display: swap; src: url("fonts/Inter-Medium.woff2?v=2") format("woff2"); }
@font-face { font-family: Inter; font-style: normal; font-weight: 600; font-display: swap; src: url("fonts/Inter-SemiBold.woff2?v=2") format("woff2"); }

:root {
  --bg: #f7f5f0; --panel: #ffffff; --ink: #16181d; --muted: #5d6270; --line: #e3dfd5;
  --accent: #5729ff; --on-accent: #ffffff; --brand-a: #2fb3a6; --brand-b: #3d1db3;
  --font: Inter, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #0a0c10; --panel: #121620; --ink: #eef0f4; --muted: #9aa3b2; --line: #1d222c;
  --accent: #61ffed; --on-accent: #000000; --brand-a: #61ffed; --brand-b: #8f73ff;
  color-scheme: dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0a0c10; --panel: #121620; --ink: #eef0f4; --muted: #9aa3b2; --line: #1d222c;
    --accent: #61ffed; --on-accent: #000000; --brand-a: #61ffed; --brand-b: #8f73ff;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 17px/1.6 var(--font); }
a { color: inherit; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
h1, h2, h3 { font-weight: 500; letter-spacing: -.015em; }
.muted { color: var(--muted); }
section { padding: 70px 0; border-top: 1px solid var(--line); }
.skip { position: absolute; left: -9999px; } .skip:focus { left: 16px; top: 16px; z-index: 10; background: var(--panel); padding: 8px 12px; }

/* шапка */
.top .wrap { display: flex; justify-content: space-between; align-items: center; padding-top: 22px; padding-bottom: 22px; }
.logo { font-size: 24px; font-weight: 500; text-decoration: none; letter-spacing: -.015em; }
.logo.has-mark { display: inline-flex; align-items: center; }
.logo img { display: block; margin-right: 10px; border-radius: 7px; }
.logo span { background: linear-gradient(90deg, var(--brand-a), var(--brand-b)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.top nav { display: flex; align-items: center; gap: 22px; }
.top nav a { color: var(--muted); text-decoration: none; font-size: 15px; }
.top nav a:hover { color: var(--ink); }
.theme-btn { padding: 6px 10px; border: 1px solid var(--line); border-radius: 4px; background: transparent; color: var(--ink); font: inherit; font-size: 15px; line-height: 1; cursor: pointer; }

/* кнопки */
.btn { display: inline-block; padding: 14px 26px; border-radius: 4px; font-weight: 600; text-decoration: none; margin: 0 10px 10px 0; border: 1px solid transparent; }
.btn.primary { background: var(--accent); color: var(--on-accent); box-shadow: 0 0 40px color-mix(in srgb, var(--accent) 40%, transparent); }
.btn.ghost { border-color: var(--line); color: var(--ink); }
.btn:focus-visible, .theme-btn:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
/* наведение: главная кнопка светится сильнее, контурные — проявляют рамку (review 2026-11-13) */
.btn.primary:hover { box-shadow: 0 0 56px color-mix(in srgb, var(--accent) 60%, transparent); }
.btn.ghost:hover, .theme-btn:hover, .copy-btn:hover { border-color: var(--muted); }
@media (prefers-reduced-motion: no-preference) { .btn, .theme-btn, .copy-btn { transition: box-shadow .15s, border-color .15s; } }

/* первый экран */
.hero { position: relative; overflow: hidden; border-top: 0; padding: 90px 0 96px; }
.hero::before { content: ""; position: absolute; right: -10%; top: -20%; width: 60%; height: 120%; pointer-events: none;
  background: radial-gradient(closest-side, color-mix(in srgb, var(--accent) 20%, transparent), transparent); }
.hero-bg { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.hero .wrap { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.hero h1 { margin: 0 0 22px; font-size: clamp(34px, 5vw, 60px); line-height: 1.08; }
.hero h1 em { font-style: normal; color: var(--accent); text-shadow: 0 0 40px color-mix(in srgb, var(--accent) 45%, transparent); }
.hero .lead { margin: 0 0 32px; font-size: 19px; color: var(--muted); max-width: 600px; }
.mail { margin: 4px 0 0; font-size: 15px; color: var(--muted); }
.mail a { color: var(--ink); }
.copy-btn { margin-left: 6px; padding: 3px 10px; border: 1px solid var(--line); border-radius: 4px; background: transparent; color: var(--ink); font: inherit; font-size: 14px; cursor: pointer; }
.copy-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.hero .note { margin-top: 12px; font-size: 14px; color: var(--muted); }

.chat { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 22px; font-size: 15px; }
.chat .q { background: color-mix(in srgb, var(--ink) 7%, transparent); border-radius: 12px 12px 4px 12px; padding: 12px 14px; margin: 0 0 16px auto; max-width: 82%; }
.chat p { margin: 0; }
.chat ol { margin: 10px 0 0; padding-left: 20px; }
.chat li { margin: 8px 0; padding: 8px 10px; border-radius: 8px; background: color-mix(in srgb, var(--ink) 4%, transparent); }
.chat li.you { list-style: none; margin-left: -20px; border: 1px dashed var(--muted); background: transparent; color: var(--muted); }
.chat li.you b { color: var(--accent); }
.chat .small { margin-top: 12px; font-size: 12px; color: var(--muted); }

/* блоки */
h2 { font-size: clamp(26px, 3.2vw, 38px); line-height: 1.15; margin: 0 0 18px; }
.two { display: grid; grid-template-columns: 1fr 1.6fr; gap: 48px; }
.two p:first-child { margin-top: 0; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 16px; overflow: hidden; margin: 28px 0 0; padding: 0; list-style: none; }
.steps li { background: var(--bg); padding: 28px; }
.steps b { display: block; color: var(--accent); font-size: 13px; letter-spacing: .12em; margin-bottom: 8px; }
.steps h3 { margin: 0 0 6px; font-size: 20px; }
.steps p { margin: 0; color: var(--muted); font-size: 16px; }
ul.list { margin: 0 0 18px; padding-left: 20px; } ul.list li { margin: 6px 0; }
.about { display: flex; gap: 24px; align-items: flex-start; }
.avatar { width: 64px; height: 64px; border-radius: 50%; flex: none; background: linear-gradient(135deg, var(--brand-a), var(--brand-b)); }
.about p { margin-top: 0; }
.links a { margin-right: 16px; color: var(--accent); }

footer { padding: 48px 0 56px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; line-height: 1.55; }
footer a { color: var(--ink); }
footer h2 { margin: 0 0 10px; font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.foot { display: grid; grid-template-columns: 1.4fr 1fr 1.4fr; gap: 40px; }
.foot-brand p { margin: 10px 0 0; max-width: 360px; }
.foot-brand .logo { font-size: 20px; }
.foot-col { display: flex; flex-direction: column; gap: 6px; }
.foot-col a { text-decoration: none; } .foot-col a:hover { text-decoration: underline; }
.foot-legal { margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--line); }
.foot-legal p { margin: 0 0 6px; max-width: 860px; }
.foot-copy { margin: 20px 0 0; }

/* текстовые страницы (страница бота) */
.doc .wrap { max-width: 760px; padding-top: 24px; padding-bottom: 72px; }
.doc h1 { font-size: clamp(30px, 4vw, 44px); margin: 24px 0 12px; }
.doc .lead { font-size: 19px; color: var(--muted); }
.doc h2 { font-size: 22px; margin: 36px 0 10px; }
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 14px; background: color-mix(in srgb, var(--ink) 7%, transparent); border-radius: 4px; }
code { padding: 1px 5px; } pre { padding: 12px 16px; overflow-x: auto; }

@media (max-width: 820px) {
  .hero { padding-top: 40px; }
  .hero .wrap, .two, .steps, .foot { grid-template-columns: 1fr; gap: 32px; }
  .top nav a.hide-sm { display: none; }
}
@media (prefers-reduced-motion: no-preference) { body { transition: background .2s, color .2s; } }