/* Сайт Tessera: тот же язык, что у приложения (как у Kling AI) — тёмный фон, салатовый акцент. */
@font-face { font-family: "Montserrat"; font-weight: 600; font-display: swap; src: url("/fonts/Montserrat-SemiBold.ttf") format("truetype"); }
@font-face { font-family: "Montserrat"; font-weight: 700; font-display: swap; src: url("/fonts/Montserrat-Bold.ttf") format("truetype"); }
@font-face { font-family: "Montserrat"; font-weight: 800; font-display: swap; src: url("/fonts/Montserrat-ExtraBold.ttf") format("truetype"); }

:root {
  --bg: #0A0A0A; --card: #141517; --card-2: #1B1C1F; --line: rgba(255,255,255,.08); --line-2: rgba(255,255,255,.14);
  --text: #F9FBFC; --text-2: #B6BBC2; --text-3: #75797F; --accent: #74FF52; --accent-ink: #0A0A0A;
  --accent-soft: rgba(116,255,82,.10); --accent-line: rgba(116,255,82,.35); --warn: #FFC857;
  --r: 14px; --max: 1120px;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --head: "Montserrat", var(--sans);
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 var(--sans); }
a { color: inherit; }
img { max-width: 100%; display: block; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 28px; } }

/* шапка */
header.top { position: sticky; top: 0; z-index: 10; background: rgba(10,10,10,.82); backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
header.top .wrap { display: flex; align-items: center; gap: 18px; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font: 800 18px var(--head); letter-spacing: .2px; }
.brand img { width: 28px; height: 28px; border-radius: 7px; }
nav.links { display: none; gap: 22px; margin-left: 8px; }
nav.links a { color: var(--text-2); text-decoration: none; font-size: 14px; }
nav.links a:hover { color: var(--text); }
@media (min-width: 860px) { nav.links { display: flex; } }
.grow { flex: 1; }
.lang { color: var(--text-2); font-size: 13px; text-decoration: none; border: 1px solid var(--line-2); border-radius: 8px; padding: 4px 10px; }
.lang:hover { color: var(--text); }

/* кнопки */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 44px; padding: 0 20px;
  border-radius: 10px; border: 1px solid var(--line-2); background: rgba(255,255,255,.04); color: var(--text);
  font: 600 15px var(--sans); text-decoration: none; cursor: pointer; white-space: nowrap; }
.btn:hover { background: rgba(255,255,255,.08); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.primary:hover { filter: brightness(1.06); }
.btn.sm { height: 34px; padding: 0 14px; font-size: 13.5px; border-radius: 8px; }
.btn svg { width: 18px; height: 18px; }
.btn[aria-disabled="true"] { opacity: .45; pointer-events: none; }

/* первый экран */
.hero { padding-top: 48px; padding-bottom: 36px; display: grid; gap: 36px; align-items: center; }
@media (min-width: 900px) { .hero { grid-template-columns: 1.05fr .95fr; padding-top: 88px; padding-bottom: 64px; } }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--accent); background: var(--accent-soft);
  border: 1px solid var(--accent-line); border-radius: 999px; padding: 4px 12px; font-size: 13px; font-weight: 600; }
h1 { font: 800 clamp(34px, 6vw, 58px)/1.06 var(--head); margin: 18px 0 18px; letter-spacing: -.5px; }
h1 em { font-style: normal; color: var(--accent); }
.lead { color: var(--text-2); font-size: clamp(16px, 2.2vw, 19px); max-width: 560px; margin: 0 0 26px; }
.cta { display: flex; flex-wrap: wrap; gap: 10px; }
.fine { color: var(--text-3); font-size: 13px; margin-top: 14px; }
.stack { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.stack figure { margin: 0; border-radius: 12px; overflow: hidden; border: 1px solid var(--line); background: var(--card);
  aspect-ratio: 9 / 16; }
.stack figure:nth-child(2) { transform: translateY(-18px); }
.stack img { width: 100%; height: 100%; object-fit: cover; }
.stack .tag { position: absolute; left: 50%; bottom: -14px; transform: translateX(-50%); background: var(--card-2);
  border: 1px solid var(--line-2); border-radius: 999px; padding: 6px 14px; font-size: 13px; color: var(--text-2); white-space: nowrap; }
.stack .tag b { color: var(--accent); font-weight: 600; }

/* разделы */
section { padding: 56px 0; border-top: 1px solid var(--line); }
h2 { font: 800 clamp(26px, 3.6vw, 36px)/1.15 var(--head); margin: 0 0 10px; letter-spacing: -.3px; }
.sub { color: var(--text-2); margin: 0 0 28px; max-width: 680px; }
.grid { display: grid; gap: 14px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .grid.c2 { grid-template-columns: 1fr 1fr; } .grid.c3 { grid-template-columns: 1fr 1fr; } }
@media (min-width: 960px) { .grid.c3 { grid-template-columns: repeat(3, 1fr); } }
.card { background: linear-gradient(180deg, var(--card-2), var(--card)); border: 1px solid var(--line); border-radius: var(--r); padding: 20px; }
.card h3 { margin: 0 0 6px; font-size: 16.5px; }
.card p { margin: 0; color: var(--text-2); font-size: 14.5px; }
.card .ic { width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center; background: var(--accent-soft);
  color: var(--accent); margin-bottom: 12px; }
.card .ic svg { width: 18px; height: 18px; }

/* шаги */
.steps { counter-reset: s; display: grid; gap: 12px; }
@media (min-width: 900px) { .steps { grid-template-columns: repeat(5, 1fr); } }
.steps .card::before { counter-increment: s; content: counter(s, decimal-leading-zero); display: block;
  font: 600 12px var(--mono); color: var(--accent); margin-bottom: 8px; }

/* режимы */
.modes .card .price { display: flex; gap: 18px; margin: 12px 0 4px; }
.modes .card .price div { display: flex; flex-direction: column; }
.modes .card .big { font: 800 24px var(--head); }
.modes .card .muted { color: var(--text-3); font-size: 12.5px; }
.modes .card ul { margin: 10px 0 0; padding-left: 18px; color: var(--text-2); font-size: 14px; }
.modes .card.hl { border-color: var(--accent-line); }
.modes .card .keys { color: var(--text-3); font-size: 12.5px; margin-top: 10px; }

/* скачать */
.dl { display: grid; gap: 14px; }
@media (min-width: 820px) { .dl { grid-template-columns: 1fr 1fr; } }
.dl .card { display: flex; flex-direction: column; gap: 12px; }
.dl .card.mine { border-color: var(--accent-line); box-shadow: 0 0 0 1px var(--accent-line) inset; }
.dl .os { display: flex; align-items: center; gap: 12px; }
.dl .os svg { width: 30px; height: 30px; }
.dl .os b { font-size: 18px; }
.dl .meta { color: var(--text-3); font-size: 13px; }
.sha { display: flex; gap: 8px; align-items: center; background: #0E0F10; border: 1px solid var(--line); border-radius: 8px;
  padding: 8px 10px; }
.sha code { font: 12px var(--mono); color: var(--text-2); overflow-wrap: anywhere; flex: 1; }
.sha button { flex: none; }
.notice { border: 1px solid rgba(255,200,87,.35); background: rgba(255,200,87,.07); color: #F3DFAE; border-radius: 10px;
  padding: 10px 12px; font-size: 13.5px; }
.notice b { color: var(--warn); }
details.how { color: var(--text-2); font-size: 14px; }
details.how summary { cursor: pointer; color: var(--text); }
details.how pre { white-space: pre-wrap; font: 12.5px var(--mono); background: #0E0F10; border: 1px solid var(--line);
  border-radius: 8px; padding: 10px; overflow-x: auto; }

/* безопасность и FAQ */
.faq details { border-bottom: 1px solid var(--line); padding: 14px 0; }
.faq summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--text-3); font-weight: 400; }
.faq details[open] summary::after { content: "−"; }
.faq p { color: var(--text-2); margin: 10px 0 0; }

/* подвал */
footer { border-top: 1px solid var(--line); padding: 30px 0 40px; color: var(--text-3); font-size: 13.5px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 14px 24px; align-items: center; }
footer a { color: var(--text-2); text-decoration: none; }
footer a:hover { color: var(--text); }

/* текстовые страницы */
.doc { max-width: 760px; padding: 48px 0 64px; }
.doc h1 { font-size: clamp(30px, 5vw, 42px); }
.doc h2 { font-size: 22px; margin-top: 32px; }
.doc p, .doc li { color: var(--text-2); }

.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }