/* ==========================================================================
   КЕДРОВ.AI — Sovereign AI-engineering platform
   Design system · "Sovereign Evergreen"
   Deep pine + cedar gold · rooted, institutional, modern-agentic
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Unbounded:wght@400;600;700;800&family=Golos+Text:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;700&display=swap');

/* ---- Tokens ------------------------------------------------------------- */
:root{
  /* Dark (pine) surfaces */
  --pine-900:#06201A;
  --pine-800:#0A2A22;
  --pine-700:#0E362B;
  --pine-600:#134536;
  --pine-500:#1B5744;

  /* Cedar accents */
  --cedar-600:#A9631B;
  --cedar-500:#D19338;
  --cedar-400:#E4AE55;
  --cedar-300:#F2CD84;

  /* Light (bone) surfaces */
  --bone-050:#FBF7EC;
  --bone-100:#F5F0E2;
  --bone-200:#ECE4D2;
  --bone-300:#DED2B8;

  /* Ink + text */
  --ink-900:#14120C;
  --ink-700:#39352A;
  --sage-400:#9DBBAA;
  --sage-300:#B9D0C2;

  /* Signal */
  --signal:#57C08A;
  --alert:#E0663F;

  /* Semantic (default = light context) */
  --bg:var(--bone-100);
  --surface:#FFFFFF;
  --surface-2:var(--bone-050);
  --text:var(--ink-900);
  --text-muted:#5E5748;
  --accent:var(--cedar-600);
  --accent-bright:var(--cedar-500);
  --border:rgba(20,18,12,.12);
  --border-strong:rgba(20,18,12,.22);
  --shadow:0 1px 2px rgba(20,18,12,.04),0 12px 34px -18px rgba(20,18,12,.30);
  --shadow-lg:0 30px 70px -30px rgba(6,32,26,.45);

  --maxw:1220px;
  --radius:14px;
  --radius-lg:22px;
  --ease:cubic-bezier(.2,.7,.2,1);

  --font-display:'Unbounded',system-ui,sans-serif;
  --font-body:'Golos Text','Segoe UI',system-ui,sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,monospace;
}

/* ---- Reset ------------------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-body);
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  font-size:17px;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
  overflow-wrap:break-word;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}

/* Grain overlay for depth */
body::after{
  content:"";position:fixed;inset:0;z-index:9999;pointer-events:none;
  opacity:.04;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---- Layout ------------------------------------------------------------ */
.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:28px}
.section{padding-block:clamp(64px,9vw,132px);position:relative}
.section--tight{padding-block:clamp(48px,6vw,84px)}

.section--pine{background:var(--pine-900);--_dark:1}
.section--pine-2{background:var(--pine-800);--_dark:1}
.section--bone{background:var(--bone-100)}
.section--bone-2{background:var(--bone-050)}
.section--white{background:#fff}

/* Dark-context variable overrides */
[class*="--pine"],.on-dark{
  --text:var(--bone-050);
  --text-muted:var(--sage-400);
  --surface:rgba(255,255,255,.035);
  --surface-2:rgba(255,255,255,.05);
  --accent:var(--cedar-400);
  --accent-bright:var(--cedar-300);
  --border:rgba(240,230,200,.14);
  --border-strong:rgba(240,230,200,.26);
  color:var(--text);
}

/* ---- Type -------------------------------------------------------------- */
.kicker{
  font-family:var(--font-mono);
  font-size:12.5px;font-weight:500;
  letter-spacing:.22em;text-transform:uppercase;
  color:var(--accent);
  display:inline-flex;align-items:center;gap:10px;
}
.kicker::before{content:"";width:26px;height:1px;background:currentColor;opacity:.6}
.kicker--plain::before{display:none}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:700;line-height:1.04;letter-spacing:-.02em;hyphens:auto}
.display{font-size:clamp(2.7rem,6.2vw,5.1rem);font-weight:800;line-height:.98;letter-spacing:-.035em;hyphens:manual}
h1,.h1{font-size:clamp(2.2rem,4.6vw,3.7rem)}
h2,.h2{font-size:clamp(1.8rem,3.4vw,2.9rem)}
h3,.h3{font-size:clamp(1.25rem,1.9vw,1.6rem);line-height:1.12}
h4,.h4{font-size:1.06rem;font-weight:600;letter-spacing:-.01em}
.lead{font-size:clamp(1.08rem,1.5vw,1.32rem);line-height:1.5;color:var(--text-muted);font-weight:400;max-width:60ch}
.muted{color:var(--text-muted)}
.accent{color:var(--accent)}
.serifnum,.tnum{font-family:var(--font-display);font-weight:700;font-variant-numeric:tabular-nums}
strong,b{font-weight:600;color:var(--text)}
p{max-width:68ch}

/* Section heading block */
.head{max-width:none}
.head .kicker{margin-bottom:20px}
.head h2{max-width:19ch;margin-bottom:20px}
.head .lead{margin-top:6px}
.head--center{text-align:center;display:flex;flex-direction:column;align-items:center}
.head--center h2,.head--center .lead{margin-inline:auto}

/* ---- Buttons ----------------------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-body);font-weight:600;font-size:15px;letter-spacing:.01em;
  padding:13px 22px;border-radius:100px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .2s,color .2s;
  white-space:nowrap;
}
.btn svg{width:16px;height:16px}
.btn--primary{background:var(--cedar-500);color:var(--pine-900);box-shadow:0 8px 22px -10px rgba(209,147,56,.8)}
.btn--primary:hover{background:var(--cedar-400);transform:translateY(-2px);box-shadow:0 14px 30px -12px rgba(209,147,56,.9)}
.btn--ghost{border:1px solid var(--border-strong);color:var(--text)}
.btn--ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn--lg{padding:16px 28px;font-size:16px}
.btn__arrow{transition:transform .25s var(--ease)}
.btn:hover .btn__arrow{transform:translateX(3px)}

/* ---- Nav --------------------------------------------------------------- */
.site-nav{position:sticky;top:0;z-index:200;background:rgba(8,32,26,.72);backdrop-filter:blur(16px) saturate(140%);border-bottom:1px solid rgba(240,230,200,.10)}
.nav__inner{display:flex;align-items:center;justify-content:space-between;height:70px;gap:24px}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--font-display);font-weight:700;font-size:20px;letter-spacing:-.03em;color:var(--bone-050)}
.brand__mark{width:30px;height:30px;flex:none}
.brand .dotai{color:var(--cedar-400)}
.nav__links{display:flex;gap:30px;align-items:center}
.nav__links a{font-size:14.5px;font-weight:500;color:var(--sage-300);letter-spacing:.01em;transition:color .2s;position:relative;padding:6px 0}
.nav__links a:hover,.nav__links a[aria-current]{color:var(--bone-050)}
.nav__links a[aria-current]::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--cedar-400);border-radius:2px}
.nav__right{display:flex;align-items:center;gap:16px}
.nav__burger{display:none;width:44px;height:44px;border-radius:10px;border:1px solid rgba(240,230,200,.16);color:var(--bone-050);align-items:center;justify-content:center}
.nav__burger svg{width:20px;height:20px}

/* ---- Cards ------------------------------------------------------------- */
.grid{display:grid;gap:22px}
.cols-2{grid-template-columns:repeat(2,1fr)}
.cols-3{grid-template-columns:repeat(3,1fr)}
.cols-4{grid-template-columns:repeat(4,1fr)}

.card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:30px;transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s;
  position:relative;overflow:hidden;
}
.card--pad-lg{padding:38px}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--border-strong)}
.card--link:hover{border-color:var(--accent)}
.card__ic{width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:color-mix(in srgb,var(--accent) 15%,transparent);color:var(--accent);margin-bottom:20px}
.card__ic svg{width:24px;height:24px}
.card h3{margin-bottom:10px}
.card p{color:var(--text-muted);font-size:15.5px}
.card__num{font-family:var(--font-mono);font-size:12px;color:var(--accent);letter-spacing:.1em;margin-bottom:16px}

/* Feature list rows */
.flist{display:flex;flex-direction:column;gap:2px}
.frow{display:grid;grid-template-columns:auto 1fr;gap:16px;padding:20px 0;border-top:1px solid var(--border);align-items:start}
.frow:last-child{border-bottom:1px solid var(--border)}
.frow__k{font-family:var(--font-mono);font-size:12px;color:var(--accent);letter-spacing:.12em;padding-top:4px}

/* ---- Stats ------------------------------------------------------------- */
.stats{display:grid;gap:1px;background:var(--border);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden}
.stat{background:var(--bg);padding:30px 26px}
.stat__num{font-family:var(--font-display);font-weight:800;font-size:clamp(2.1rem,3.6vw,3rem);line-height:1;letter-spacing:-.03em;color:var(--accent)}
.stat__label{margin-top:12px;font-size:14px;color:var(--text-muted);line-height:1.4}

/* ---- Badges / tags ----------------------------------------------------- */
.badge{display:inline-flex;align-items:center;gap:7px;font-family:var(--font-mono);font-size:11px;font-weight:500;letter-spacing:.09em;text-transform:uppercase;padding:5px 11px;border-radius:100px;border:1px solid var(--border-strong)}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.badge--prod{color:var(--signal)}
.badge--pilot{color:var(--cedar-500)}
.badge--proto{color:#9C6AD1}
.badge--target{color:#5B93D6}
.pill{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:100px;border:1px solid var(--border);background:var(--surface);font-size:13px;font-weight:500;color:var(--text-muted)}
.pill svg{width:15px;height:15px;color:var(--accent)}

/* ---- Tables ------------------------------------------------------------ */
.tbl{width:100%;border-collapse:collapse;font-size:14.5px}
.tbl th,.tbl td{text-align:left;padding:15px 16px;border-bottom:1px solid var(--border);vertical-align:middle}
.tbl thead th{font-family:var(--font-mono);font-size:11.5px;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--text-muted);background:var(--surface-2)}
.tbl tbody tr:hover{background:color-mix(in srgb,var(--accent) 5%,transparent)}
.tbl .dot{color:var(--accent);font-size:16px}
.tbl .dot--o{color:var(--border-strong)}
.tbl-wrap{border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;overflow-x:auto}

/* ---- Decorative -------------------------------------------------------- */
.rings{position:absolute;inset:0;pointer-events:none;opacity:.5;z-index:0}
.glow{position:absolute;border-radius:50%;filter:blur(90px);pointer-events:none;z-index:0}
.reveal-children>*{position:relative;z-index:1}
.rule{height:1px;background:var(--border);border:none;margin-block:26px}

/* eyebrow number chip */
.enum{font-family:var(--font-mono);font-size:13px;color:var(--accent);border:1px solid var(--border-strong);border-radius:8px;padding:3px 9px;letter-spacing:.05em}

/* ---- Footer ------------------------------------------------------------ */
.site-footer{background:var(--pine-900);color:var(--sage-300);padding-block:70px 34px;position:relative}
.footer__top{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(240,230,200,.12)}
.footer__brand .brand{margin-bottom:18px}
.footer__brand p{font-size:14.5px;color:var(--sage-400);max-width:34ch}
.footer__col h5{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--cedar-400);margin-bottom:16px;font-weight:500}
.footer__col a{display:block;font-size:14.5px;color:var(--sage-300);padding:6px 0;transition:color .2s}
.footer__col a:hover{color:var(--bone-050)}
.footer__bottom{display:flex;justify-content:space-between;align-items:center;gap:20px;padding-top:26px;flex-wrap:wrap}
.footer__bottom small{color:var(--sage-400);font-size:13px}
.sov-badges{display:flex;gap:10px;flex-wrap:wrap}
.sov-badges span{font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--sage-300);border:1px solid rgba(240,230,200,.16);border-radius:7px;padding:5px 10px}

/* ---- Motion ------------------------------------------------------------ */
[data-reveal]{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
[data-reveal].is-in{opacity:1;transform:none}
[data-reveal][data-d="1"]{transition-delay:.08s}
[data-reveal][data-d="2"]{transition-delay:.16s}
[data-reveal][data-d="3"]{transition-delay:.24s}
[data-reveal][data-d="4"]{transition-delay:.32s}
[data-reveal][data-d="5"]{transition-delay:.40s}
@media (prefers-reduced-motion:reduce){
  [data-reveal]{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ---- Hero shell -------------------------------------------------------- */
.hero{background:var(--pine-900);position:relative;overflow:hidden;padding-block:clamp(90px,13vw,170px) clamp(70px,9vw,120px)}
.hero .wrap{position:relative;z-index:2}
.hero__grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}

/* utility */
.mt-s{margin-top:14px}.mt-m{margin-top:26px}.mt-l{margin-top:44px}
.center{text-align:center}
.flex{display:flex}.gap-s{gap:12px}.gap-m{gap:18px}.wrap-w{flex-wrap:wrap}.items-c{align-items:center}
.maxw-sm{max-width:640px}.maxw-md{max-width:820px}
.chips{display:flex;flex-wrap:wrap;gap:10px}

/* ---- Responsive -------------------------------------------------------- */
@media (max-width:960px){
  .hero__grid{grid-template-columns:1fr;gap:40px}
  .cols-4{grid-template-columns:repeat(2,1fr)}
  .footer__top{grid-template-columns:1fr 1fr;gap:32px}
  .nav__links{display:none}
  .nav__burger{display:flex}
  .site-nav.open .nav__links{display:flex;position:absolute;top:70px;left:0;right:0;flex-direction:column;background:var(--pine-800);padding:16px 28px 26px;gap:6px;border-bottom:1px solid rgba(240,230,200,.12)}
  .site-nav.open .nav__links a{padding:11px 0;font-size:16px}
}
@media (max-width:640px){
  body{font-size:16px}
  .wrap{padding-inline:20px}
  .cols-2,.cols-3,.cols-4{grid-template-columns:1fr}
  .footer__top{grid-template-columns:1fr}
  .card{padding:24px}
  .btn{width:100%;justify-content:center;white-space:normal}
  /* Hide the nav CTA on phones so the brand + burger fit (demo CTA stays in the hero, footer & sections) */
  .nav__right .btn{display:none}
}