/* =====================================================================
   KrasoftRemoteDesktop — лендинг ООО «КРАСОФТ»
   Премиальный тёмный дизайн. Фирменная палитра: синий + оранжевый.
   ===================================================================== */

:root {
    --bg:        #070b14;
    --bg-2:      #0a1122;
    --surface:   rgba(255, 255, 255, 0.045);
    --surface-2: rgba(255, 255, 255, 0.07);
    --border:    rgba(255, 255, 255, 0.10);
    --border-2:  rgba(255, 255, 255, 0.16);

    --text:   #e8eefb;
    --muted:  #93a6c4;
    --faint:  #5f7390;

    --primary:   #38bdf8;   /* фирменный голубой */
    --primary-2: #0ea5e9;
    --indigo:    #818cf8;
    --accent:    #fb923c;   /* фирменный оранжевый */
    --accent-2:  #f97316;
    --green:     #34d399;
    --red:       #f87171;
    --violet:    #a78bfa;

    --grad-brand: linear-gradient(135deg, #38bdf8 0%, #6aa8ff 45%, #a78bfa 100%);
    --grad-warm:  linear-gradient(135deg, #fb923c 0%, #f97316 100%);
    --grad-cta:   linear-gradient(135deg, #0ea5e9 0%, #3b82f6 55%, #6366f1 100%);

    --font:  'Manrope', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    --display: 'Space Grotesk', 'Manrope', system-ui, sans-serif;
    --mono:  'JetBrains Mono', ui-monospace, 'Cascadia Code', Consolas, monospace;

    --radius:    14px;
    --radius-lg: 22px;
    --radius-xl: 30px;
    --container: 1180px;

    --shadow:    0 20px 50px -20px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 40px 90px -30px rgba(2, 10, 30, 0.8);
    --glow:      0 0 0 1px rgba(56, 189, 248, 0.25), 0 18px 50px -12px rgba(56, 189, 248, 0.45);
}

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

html { scroll-behavior: smooth; scroll-padding-top: 90px; -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    font-family: var(--font);
    font-size: 17px;
    line-height: 1.65;
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { font-family: var(--display); line-height: 1.1; font-weight: 700; letter-spacing: -0.02em; margin: 0; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
b { font-weight: 700; }

::selection { background: rgba(56, 189, 248, 0.32); color: #fff; }

.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: 24px; }

.grad {
    background: var(--grad-brand);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent; color: transparent;
}

.skip-link {
    position: fixed; left: 12px; top: -60px; z-index: 200;
    background: var(--primary); color: #04121f; padding: 10px 16px; border-radius: 10px;
    font-weight: 700; transition: top .2s;
}
.skip-link:focus { top: 12px; }

/* ------------------------- animated background ------------------------- */
.bg-canvas { position: fixed; inset: 0; z-index: -1; overflow: hidden; background: radial-gradient(1200px 800px at 70% -10%, #0d1b34 0%, var(--bg) 60%); }

.aurora { position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.5; will-change: transform; }
.aurora--1 { width: 620px; height: 620px; top: -180px; left: -120px; background: radial-gradient(circle, #1d6fb8, transparent 70%); animation: auroraA 22s ease-in-out infinite; }
.aurora--2 { width: 540px; height: 540px; top: 8%; right: -160px; background: radial-gradient(circle, #6d4bd8, transparent 70%); animation: auroraB 26s ease-in-out infinite; }
.aurora--3 { width: 500px; height: 500px; bottom: -160px; left: 28%; background: radial-gradient(circle, #f97316, transparent 72%); opacity: 0.28; animation: auroraC 30s ease-in-out infinite; }

@keyframes auroraA { 0%,100% { transform: translate(0,0) scale(1);} 50% { transform: translate(80px,60px) scale(1.12);} }
@keyframes auroraB { 0%,100% { transform: translate(0,0) scale(1);} 50% { transform: translate(-70px,40px) scale(1.15);} }
@keyframes auroraC { 0%,100% { transform: translate(0,0) scale(1);} 50% { transform: translate(40px,-50px) scale(1.1);} }

.bg-grid {
    position: absolute; inset: 0;
    background-image: linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 75%);
    -webkit-mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 75%);
}
.bg-noise { position: absolute; inset: 0; opacity: 0.025; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"); }

/* ------------------------------- buttons ------------------------------- */
.btn {
    --bg: var(--surface-2);
    display: inline-flex; align-items: center; justify-content: center; gap: 9px;
    font-family: var(--font); font-weight: 700; font-size: 15px; line-height: 1;
    padding: 13px 22px; border-radius: 12px; border: 1px solid var(--border-2);
    background: var(--bg); color: var(--text); cursor: pointer;
    transition: transform .18s ease, box-shadow .25s ease, background .25s ease, border-color .25s;
    white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn svg { flex: none; }

.btn--primary {
    border-color: transparent; color: #04121f;
    background: var(--grad-cta);
    background-size: 180% 180%;
    box-shadow: 0 14px 34px -12px rgba(59, 130, 246, 0.7);
    animation: ctaShift 6s ease infinite;
}
.btn--primary:hover { box-shadow: 0 20px 46px -12px rgba(99, 102, 241, 0.85); color: #02101c; }
@keyframes ctaShift { 0%,100% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } }

.btn--ghost { background: var(--surface); backdrop-filter: blur(8px); }
.btn--ghost:hover { border-color: var(--primary); box-shadow: 0 0 0 1px rgba(56,189,248,.3), 0 16px 40px -16px rgba(56,189,248,.4); }

.btn--lg { padding: 16px 28px; font-size: 16px; border-radius: 14px; }
.btn--sm { padding: 10px 16px; font-size: 14px; }
.btn--block { width: 100%; }

/* ------------------------------- nav ------------------------------- */
.nav { position: sticky; top: 0; z-index: 100; transition: transform .35s ease; }
.nav.is-hidden { transform: translateY(-110%); }
.nav__inner {
    display: flex; align-items: center; gap: 24px;
    margin-top: 14px; padding: 11px 14px 11px 18px;
    border-radius: 16px; border: 1px solid var(--border);
    background: rgba(9, 14, 27, 0.6); backdrop-filter: blur(18px) saturate(140%);
    box-shadow: var(--shadow);
}
.nav.is-scrolled .nav__inner { background: rgba(8, 12, 24, 0.85); border-color: var(--border-2); }

.brand { display: flex; align-items: center; gap: 12px; margin-right: auto; }
.brand__logo { height: 30px; width: auto; filter: drop-shadow(0 2px 8px rgba(0,0,0,.4)); }
.brand__sep { width: 1px; height: 22px; background: var(--border-2); }
.brand__product { font-family: var(--display); font-weight: 700; font-size: 16px; letter-spacing: -0.01em; }
.brand__product span { color: var(--primary); }

.nav__links { display: flex; gap: 6px; }
.nav__links a { color: var(--muted); font-weight: 600; font-size: 15px; padding: 8px 13px; border-radius: 10px; transition: color .2s, background .2s; }
.nav__links a:hover { color: var(--text); background: var(--surface); }

.nav__actions { display: flex; align-items: center; gap: 10px; }

.nav__burger { display: none; width: 42px; height: 42px; border: 1px solid var(--border-2); border-radius: 11px; background: var(--surface); cursor: pointer; padding: 0; }
.nav__burger span { display: block; width: 18px; height: 2px; margin: 3px auto; background: var(--text); border-radius: 2px; transition: .25s; }
.nav__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

.nav__mobile { display: none; flex-direction: column; gap: 6px; margin-top: 10px; padding: 14px; border-radius: 16px; border: 1px solid var(--border); background: rgba(8,12,24,.96); backdrop-filter: blur(18px); }
.nav__mobile.is-open { display: flex; animation: dropIn .25s ease; }
.nav__mobile a { padding: 12px 14px; border-radius: 11px; color: var(--muted); font-weight: 600; }
.nav__mobile a:hover { background: var(--surface); color: var(--text); }
.nav__mobile .btn { margin-top: 6px; color: #04121f; }
@keyframes dropIn { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }

/* ------------------------------- hero ------------------------------- */
.hero { position: relative; padding: 58px 0 40px; }
.hero__inner { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center; }

.pill {
    display: inline-flex; align-items: center; gap: 9px;
    padding: 7px 15px 7px 11px; border-radius: 999px;
    border: 1px solid var(--border-2); background: var(--surface);
    font-size: 13.5px; font-weight: 600; color: var(--muted); margin-bottom: 22px;
}
.pill__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px rgba(251,146,60,.18); animation: pulse 2.2s infinite; }

.hero__title { font-size: clamp(40px, 6vw, 68px); letter-spacing: -0.035em; margin-bottom: 22px; }
.hero__lead { font-size: clamp(17px, 2.1vw, 20px); color: var(--muted); max-width: 540px; margin-bottom: 30px; }
.hero__lead b { color: var(--text); }

.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 26px; }

.hero__trust { display: flex; flex-wrap: wrap; gap: 18px; list-style: none; padding: 0; margin: 0; }
.hero__trust li { display: flex; align-items: center; gap: 7px; font-size: 14px; color: var(--muted); font-weight: 600; }
.hero__trust svg { color: var(--green); }

/* hero stage / mockup */
.hero__stage { position: relative; display: grid; place-items: center; min-height: 420px; }

.ring { position: absolute; border-radius: 50%; border: 1.5px dashed rgba(56,189,248,.22); pointer-events: none; }
.ring--lg { width: 460px; height: 460px; animation: spin 40s linear infinite; border-color: rgba(56,189,248,.16); }
.ring--md { width: 320px; height: 320px; animation: spin 28s linear infinite reverse; border-color: rgba(167,139,250,.18); }
.ring--lg::before, .ring--md::before { content: ""; position: absolute; top: -5px; left: 50%; width: 10px; height: 10px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 14px var(--primary); }
.ring--md::before { background: var(--accent); box-shadow: 0 0 14px var(--accent); }
@keyframes spin { to { transform: rotate(360deg); } }

.glass { background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02)); border: 1px solid var(--border); backdrop-filter: blur(16px) saturate(130%); box-shadow: var(--shadow-lg); }

.rsession { position: relative; width: min(440px, 92%); border-radius: var(--radius-lg); overflow: hidden; z-index: 2; }
.rsession__bar { display: flex; align-items: center; gap: 7px; padding: 12px 16px; border-bottom: 1px solid var(--border); background: rgba(255,255,255,.03); }
.dot { width: 11px; height: 11px; border-radius: 50%; }
.dot--r { background: #ff5f57; } .dot--y { background: #febc2e; } .dot--g { background: #28c840; }
.rsession__title { font-size: 13px; color: var(--muted); margin-left: 8px; }
.rsession__title b { color: var(--text); }
.rsession__live { margin-left: auto; display: inline-flex; align-items: center; gap: 6px; font-size: 11px; font-weight: 800; letter-spacing: .08em; color: #ff6b6b; }
.rsession__live i { width: 7px; height: 7px; border-radius: 50%; background: #ff5f57; animation: pulse 1.4s infinite; }

.rsession__toolbar { display: flex; flex-wrap: wrap; gap: 8px; padding: 12px 16px; border-bottom: 1px solid var(--border); }
.chip { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 700; color: var(--muted); padding: 5px 10px; border-radius: 8px; background: var(--surface); border: 1px solid var(--border); font-variant-numeric: tabular-nums; }
.chip i { width: 6px; height: 6px; border-radius: 50%; background: var(--green); }
.chip--accent { color: var(--accent); border-color: rgba(251,146,60,.35); background: rgba(251,146,60,.08); }

.rsession__screen { padding: 16px; background: radial-gradient(120% 120% at 30% 0%, #0e1830, #070d1c); }
.mini-os { position: relative; border-radius: 12px; overflow: hidden; border: 1px solid var(--border); aspect-ratio: 16/10; background: linear-gradient(135deg, #11203c, #0a1426); }
.mini-os__top { height: 26px; background: rgba(255,255,255,.05); border-bottom: 1px solid var(--border); }
.mini-os__body { display: grid; grid-template-columns: 1.3fr 1fr; gap: 12px; padding: 14px; height: calc(100% - 26px); }
.mini-win { border-radius: 9px; background: rgba(255,255,255,.04); border: 1px solid var(--border); overflow: hidden; }
.mini-win__bar { height: 16px; background: linear-gradient(90deg, var(--primary), var(--indigo)); opacity: .7; }
.mini-win__rows { display: flex; flex-direction: column; gap: 7px; padding: 12px; }
.mini-win__rows span { height: 7px; border-radius: 4px; background: rgba(255,255,255,.13); }
.mini-graph { border-radius: 9px; background: rgba(255,255,255,.03); border: 1px solid var(--border); display: grid; place-items: stretch; padding: 10px; }
.mini-graph svg { width: 100%; height: 100%; }
.mini-graph__line { fill: none; stroke: var(--accent); stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; filter: drop-shadow(0 0 6px rgba(251,146,60,.6)); stroke-dasharray: 320; stroke-dashoffset: 320; animation: draw 3s ease forwards .6s; }
@keyframes draw { to { stroke-dashoffset: 0; } }
.cursor { position: absolute; width: 16px; height: 16px; left: 42%; top: 56%; animation: cursorMove 7s ease-in-out infinite; }
.cursor::before { content: ""; position: absolute; inset: 0; background: #fff; clip-path: polygon(0 0, 0 16px, 4px 12px, 7px 18px, 9px 17px, 6px 11px, 12px 11px); filter: drop-shadow(0 2px 3px rgba(0,0,0,.5)); }
@keyframes cursorMove { 0%,100% { left: 42%; top: 56%; } 25% { left: 64%; top: 38%; } 50% { left: 30%; top: 30%; } 75% { left: 70%; top: 62%; } }

.float-chip { position: absolute; z-index: 3; font-size: 13px; font-weight: 700; padding: 10px 14px; border-radius: 12px; color: var(--text); }
.float-chip b { color: var(--primary); }
.float-chip--1 { top: -5%; left: 2%; animation: floaty 6s ease-in-out infinite; }
.float-chip--2 { bottom: 4%; right: -3%; display: inline-flex; align-items: center; gap: 8px; animation: floaty 7s ease-in-out infinite 1s; }
.float-chip__pulse { width: 9px; height: 9px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(52,211,153,.18); animation: pulse 2s infinite; }
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .35; } }

/* techstrip */
.techstrip { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; margin-top: 46px; padding-top: 26px; border-top: 1px solid var(--border); }
.techstrip > span { font-size: 13px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--faint); }
.techstrip__items { display: flex; flex-wrap: wrap; gap: 12px 26px; }
.techstrip__items span { font-family: var(--display); font-weight: 600; font-size: 15px; color: var(--muted); opacity: .85; transition: color .2s, opacity .2s; }
.techstrip__items span:hover { color: var(--primary); opacity: 1; }

/* ------------------------------- stats ------------------------------- */
.stats { padding: 30px 0 10px; }
.stats__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.stat { padding: 26px 22px; border-radius: var(--radius-lg); border: 1px solid var(--border); background: var(--surface); text-align: center; position: relative; overflow: hidden; }
.stat::after { content: ""; position: absolute; inset: 0 0 auto 0; height: 2px; background: var(--grad-brand); opacity: .8; }
.stat__num { font-family: var(--display); font-weight: 700; font-size: clamp(34px, 4.4vw, 50px); line-height: 1; background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; font-variant-numeric: tabular-nums; }
.stat__label { margin-top: 12px; font-size: 14.5px; color: var(--muted); font-weight: 600; }

/* ------------------------------- sections ------------------------------- */
.section { padding: 92px 0; position: relative; }
.section--alt::before { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent, rgba(255,255,255,.012), transparent); pointer-events: none; }

.section__head { max-width: 680px; margin: 0 auto 54px; text-align: center; }
.section__head--left { margin-inline: 0; text-align: left; }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; color: var(--primary); margin-bottom: 14px; }
.section__title { font-size: clamp(30px, 4.4vw, 46px); letter-spacing: -0.03em; }
.section__sub { margin-top: 16px; font-size: 18px; color: var(--muted); }

/* ------------------------------- feature cards ------------------------------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
    position: relative; padding: 28px; border-radius: var(--radius-lg);
    border: 1px solid var(--border); background: var(--surface);
    transition: transform .3s ease, border-color .3s, box-shadow .3s, background .3s;
    overflow: hidden;
}
.card::before { content: ""; position: absolute; inset: -1px; border-radius: inherit; padding: 1px; background: var(--grad-brand); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; opacity: 0; transition: opacity .3s; }
.card:hover { transform: translateY(-6px); background: var(--surface-2); box-shadow: var(--shadow-lg); }
.card:hover::before { opacity: .9; }
.card__icon { width: 56px; height: 56px; border-radius: 16px; display: grid; place-items: center; margin-bottom: 18px; color: #fff; box-shadow: inset 0 1px 0 rgba(255,255,255,.25); }
.card h3 { font-size: 20px; margin-bottom: 9px; }
.card p { color: var(--muted); font-size: 15.5px; line-height: 1.6; }

.icon--blue   { background: linear-gradient(135deg, #38bdf8, #2563eb); }
.icon--cyan   { background: linear-gradient(135deg, #22d3ee, #0891b2); }
.icon--green  { background: linear-gradient(135deg, #34d399, #059669); }
.icon--orange { background: linear-gradient(135deg, #fbbf24, #f97316); }
.icon--red    { background: linear-gradient(135deg, #fb7185, #e11d48); }
.icon--violet { background: linear-gradient(135deg, #a78bfa, #7c3aed); }

/* ------------------------------- performance ------------------------------- */
.perf { max-width: 980px; margin: 0 auto; }
.perf__table { border-radius: var(--radius-lg); border: 1px solid var(--border); overflow: hidden; background: var(--surface); }
.perf__row { display: grid; grid-template-columns: 1.1fr 1fr 1.2fr 1.6fr; align-items: center; }
.perf__row > span { padding: 16px 20px; font-size: 15px; color: var(--muted); border-bottom: 1px solid var(--border); }
.perf__row > span:first-child { color: var(--text); font-weight: 700; }
.perf__row--head { background: rgba(56,189,248,.06); }
.perf__row--head > span { color: var(--text); font-family: var(--display); font-weight: 700; font-size: 14px; letter-spacing: .01em; }
.perf__row:last-child > span { border-bottom: none; }
.perf__row:not(.perf__row--head):hover { background: rgba(255,255,255,.025); }
.perf__row em { font-style: normal; color: var(--faint); font-size: 13px; }
.hl { color: var(--green); font-weight: 800; }
.perf__note { margin-top: 22px; text-align: center; color: var(--muted); font-size: 15.5px; }
.perf__note b { color: var(--green); }

/* ------------------------------- modes / how ------------------------------- */
.modes { display: grid; grid-template-columns: 1fr auto 1fr; gap: 26px; align-items: stretch; }
.mode { padding: 30px; border-radius: var(--radius-lg); border: 1px solid var(--border); background: var(--surface); }
.mode--accent { border-color: rgba(251,146,60,.28); background: linear-gradient(180deg, rgba(251,146,60,.06), var(--surface)); }
.mode__tag { display: inline-block; font-size: 12px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--primary); padding: 5px 11px; border-radius: 999px; background: rgba(56,189,248,.1); border: 1px solid rgba(56,189,248,.25); margin-bottom: 12px; }
.mode__tag--accent { color: var(--accent); background: rgba(251,146,60,.1); border-color: rgba(251,146,60,.3); }
.mode__head h3 { font-size: 23px; }
.mode__desc { color: var(--muted); margin: 12px 0 20px; }
.steps { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 14px; }
.steps li { display: flex; align-items: flex-start; gap: 13px; font-size: 15.5px; color: var(--muted); }
.steps li b { color: var(--text); }
.steps span { flex: none; width: 28px; height: 28px; border-radius: 9px; display: grid; place-items: center; font-family: var(--display); font-weight: 700; font-size: 14px; color: #04121f; background: var(--grad-brand); }

.mode__diagram { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; min-width: 130px; }
.node { position: relative; display: flex; flex-direction: column; align-items: center; gap: 7px; padding: 14px 18px; border-radius: 16px; border: 1px solid var(--border-2); background: var(--surface-2); color: var(--text); font-weight: 700; font-size: 13px; z-index: 2; }
.node svg { color: var(--primary); }
.node--relay svg { color: var(--accent); }
.node--relay { border-color: rgba(251,146,60,.35); }
.ring--sm { position: absolute; width: 74px; height: 74px; border: 1.5px dashed rgba(251,146,60,.4); animation: spin 14s linear infinite; }
.wire { position: relative; width: 2px; height: 38px; background: var(--border-2); overflow: hidden; }
.wire i { position: absolute; left: -1px; width: 4px; height: 14px; border-radius: 4px; background: var(--primary); box-shadow: 0 0 10px var(--primary); animation: flow 1.8s linear infinite; }
.wire--2 i { background: var(--accent); box-shadow: 0 0 10px var(--accent); animation-delay: .9s; }
@keyframes flow { from { top: -14px; } to { top: 38px; } }

/* ------------------------------- tech ------------------------------- */
.tech { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.tech__col { padding: 30px; border-radius: var(--radius-lg); border: 1px solid var(--border); background: var(--surface); }
.tech__h { font-size: 21px; margin-bottom: 8px; }
.tech__p { color: var(--muted); font-size: 15px; margin-bottom: 18px; }
.proto { display: flex; flex-direction: column; gap: 8px; }
.proto__row { display: grid; grid-template-columns: auto auto 1fr; gap: 12px; align-items: center; padding: 11px 14px; border-radius: 11px; background: rgba(0,0,0,.25); border: 1px solid var(--border); }
.proto__op { font-family: var(--mono); font-size: 13px; font-weight: 700; color: var(--accent); }
.proto__name { font-family: var(--display); font-weight: 700; font-size: 14px; color: var(--text); }
.proto__d { font-size: 13.5px; color: var(--muted); text-align: right; }

.optlist { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 16px; }
.optlist li { position: relative; padding-left: 22px; font-size: 14.5px; color: var(--muted); line-height: 1.55; }
.optlist li::before { content: ""; position: absolute; left: 0; top: 7px; width: 9px; height: 9px; border-radius: 3px; background: var(--grad-brand); }
.optlist b { display: block; color: var(--text); font-family: var(--display); font-size: 15.5px; margin-bottom: 3px; }

.arch { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 22px; }
.arch__item { padding: 20px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface); }
.arch__item span { font-family: var(--display); font-weight: 700; color: var(--primary); font-size: 16px; }
.arch__item p { margin-top: 6px; font-size: 13.5px; color: var(--muted); }

/* ------------------------------- download ------------------------------- */
.dl { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; max-width: 880px; margin: 0 auto; }
.dl__card { position: relative; padding: 34px; border-radius: var(--radius-lg); text-align: center; }
.dl__badge { position: absolute; top: 18px; right: 18px; font-size: 11px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; padding: 5px 11px; border-radius: 999px; }
.dl__badge--client { color: var(--primary); background: rgba(56,189,248,.12); border: 1px solid rgba(56,189,248,.3); }
.dl__badge--host { color: var(--accent); background: rgba(251,146,60,.12); border: 1px solid rgba(251,146,60,.3); }
.dl__card h3 { font-size: 30px; margin-bottom: 10px; }
.dl__card > p { color: var(--muted); font-size: 15px; margin-bottom: 22px; min-height: 44px; }
.dl__meta { display: block; margin-top: 14px; font-size: 13px; color: var(--faint); font-weight: 600; }

.reqs { max-width: 880px; margin: 30px auto 0; padding: 26px 30px; border-radius: var(--radius-lg); border: 1px solid var(--border); background: var(--surface); }
.reqs__h { font-size: 17px; margin-bottom: 18px; color: var(--text); }
.reqs__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.reqs__grid > div { display: flex; flex-direction: column; gap: 4px; }
.reqs__grid b { font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--faint); }
.reqs__grid span { font-weight: 700; color: var(--text); font-size: 15px; }

/* ------------------------------- final cta ------------------------------- */
.cta { padding: 30px 0 100px; }
.cta__box { position: relative; overflow: hidden; max-width: 940px; margin: 0 auto; padding: 64px 40px; border-radius: var(--radius-xl); text-align: center; }
.cta__box h2 { font-size: clamp(28px, 4vw, 42px); margin-bottom: 14px; }
.cta__box p { color: var(--muted); font-size: 18px; max-width: 520px; margin: 0 auto 28px; }
.cta__actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.ring--cta { width: 520px; height: 520px; top: -180px; left: 50%; transform: translateX(-50%); border-color: rgba(56,189,248,.15); animation: spin 50s linear infinite; }

/* ------------------------------- footer ------------------------------- */
.footer { border-top: 1px solid var(--border); padding: 56px 0 30px; background: linear-gradient(180deg, transparent, rgba(0,0,0,.3)); }
.footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 30px; }
.footer__brand img { height: 34px; width: auto; margin-bottom: 16px; }
.footer__tag { color: var(--muted); font-size: 15px; max-width: 320px; margin-bottom: 14px; }
.footer__copy { color: var(--faint); font-size: 13.5px; }
.footer__col h4 { font-size: 14px; font-family: var(--display); color: var(--text); margin-bottom: 14px; letter-spacing: .02em; }
.footer__col a { display: block; color: var(--muted); font-size: 14.5px; padding: 5px 0; transition: color .2s; }
.footer__col a:hover { color: var(--primary); }
.footer__bottom { display: flex; justify-content: space-between; align-items: center; gap: 14px; margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--border); color: var(--faint); font-size: 13.5px; flex-wrap: wrap; }
.footer__pulse { display: inline-flex; align-items: center; gap: 8px; }
.footer__pulse i { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(52,211,153,.16); animation: pulse 2s infinite; }

/* ------------------------------- legal ------------------------------- */
.legal { padding-top: 56px; }
.legal__inner { max-width: 820px; }
.legal__body { margin: 10px 0 36px; }
.legal__body h2 { font-size: 22px; margin: 30px 0 10px; }
.legal__body p { color: var(--muted); margin-bottom: 12px; }
.legal__body ul { color: var(--muted); padding-left: 20px; margin: 0 0 12px; }
.legal__body li { margin-bottom: 8px; }
.legal__body a { color: var(--primary); }
.legal__note { margin-top: 24px; padding: 16px 20px; border-radius: 12px; border: 1px solid var(--border); background: var(--surface); font-size: 14px; }

/* ------------------------------- reveal anim ------------------------------- */
/* Прогрессивное улучшение: без JS контент виден сразу. Прячем только при html.js. */
.reveal { transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); will-change: opacity, transform; }
html.js .reveal { opacity: 0; transform: translateY(22px); }
html.js .reveal.is-visible { opacity: 1; transform: none; }

/* ------------------------------- responsive ------------------------------- */
@media (max-width: 980px) {
    .hero__inner { grid-template-columns: 1fr; gap: 36px; }
    .hero__stage { min-height: 360px; order: 2; }
    .cards { grid-template-columns: repeat(2, 1fr); }
    .tech { grid-template-columns: 1fr; }
    .arch { grid-template-columns: repeat(2, 1fr); }
    .modes { grid-template-columns: 1fr; }
    .mode__diagram { flex-direction: row; min-width: 0; padding: 8px 0; }
    .mode__diagram .wire { width: 48px; height: 2px; }
    .mode__diagram .wire i { width: 14px; height: 4px; left: auto; top: -1px; animation: flowX 1.8s linear infinite; }
    @keyframes flowX { from { left: -14px; } to { left: 48px; } }
    .footer__grid { grid-template-columns: 1fr 1fr; }
    .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 760px) {
    body { font-size: 16px; }
    .nav__links { display: none; }
    .nav__burger { display: block; }
    .nav__actions .btn--ghost { display: none; }
    .stats__grid { grid-template-columns: repeat(2, 1fr); }
    .section { padding: 70px 0; }
    .reqs__grid { grid-template-columns: repeat(2, 1fr); }

    /* перф-таблица → карточки */
    .perf__table { border: none; background: transparent; }
    .perf__row--head { display: none; }
    .perf__row { grid-template-columns: 1fr; gap: 0; margin-bottom: 14px; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: var(--surface); }
    .perf__row > span { display: flex; justify-content: space-between; gap: 16px; text-align: right; }
    .perf__row > span::before { content: attr(data-th); color: var(--faint); font-weight: 700; font-size: 13px; text-align: left; }
    .perf__row > span:first-child { background: rgba(56,189,248,.06); }
    .perf__row > span:first-child::before { content: "Параметр"; }
}

@media (max-width: 560px) {
    .container { padding-inline: 18px; }
    .cards { grid-template-columns: 1fr; }
    .stats__grid { grid-template-columns: 1fr 1fr; }
    .dl { grid-template-columns: 1fr; }
    .arch { grid-template-columns: 1fr; }
    .footer__grid { grid-template-columns: 1fr; }
    .footer__bottom { justify-content: flex-start; }
    .float-chip--1 { left: 0; } .float-chip--2 { right: 0; }
    .hero__title { font-size: clamp(34px, 11vw, 46px); }
    .cta__box { padding: 44px 24px; }
}

/* ------------------------------- a11y ------------------------------- */
:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; border-radius: 6px; }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
    .reveal { opacity: 1; transform: none; }
    html { scroll-behavior: auto; }
}