/* ============================================================
   DevHeal Labs — design system v4 "Liquid Glass"
   Dual-mode, colour-forward, translucent layered surfaces.
   Plain CSS, no build step.
   ============================================================ */

/* ---------- TOKENS: LIGHT ---------- */
:root{
  --bg:#f6f7fb;
  --bg-solid:#ffffff;
  --bg-subtle:rgba(255,255,255,.45);

  /* glass */
  --glass:rgba(255,255,255,.62);
  --glass-strong:rgba(255,255,255,.82);
  --glass-2:rgba(255,255,255,.44);
  --glass-brd:rgba(255,255,255,.75);
  --glass-edge:rgba(17,17,28,.08);
  --glass-shadow:0 8px 32px rgba(24,24,54,.08),0 2px 8px rgba(24,24,54,.04);
  --glass-blur:blur(22px) saturate(180%);

  --text:#111120;
  --text-muted:#53536a;
  --text-dim:#6a6a85;
  --line:rgba(17,17,40,.10);
  --line-strong:rgba(17,17,40,.18);

  --accent:#1552b8;
  --accent-2:#2b90ff;
  --accent-hover:#12305e;
  --accent-fg:#ffffff;
  --accent-wash:rgba(21,82,184,.10);
  --grad-accent:linear-gradient(120deg,#12305e,#1552b8 48%,#2b90ff);
  --grad-cta:linear-gradient(120deg,#12305e,#164ea8 55%,#1f6fd0);

  /* ambient colour field */
  --amb-1:rgba(21,82,184,.26);
  --amb-2:rgba(43,144,255,.22);
  --amb-3:rgba(18,48,94,.16);
  --amb-4:rgba(43,144,255,.12);

  --ok:#0b6640;
  --info:#17508f;
  --warn:#754600;
  --study:#5b21b6;
  --idle:#4f4f64;
  --danger:#8f1f14;

  --code-bg:rgba(16,16,28,.92);
  --code-text:#d9d9e6;

  --radius:16px;
  --radius-sm:10px;
  --radius-lg:22px;

  --font:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --font-display:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --mono:'JetBrains Mono','SF Mono',SFMono-Regular,Consolas,'Liberation Mono',Menlo,monospace;

  /* legacy aliases — keep inline styles in the markup working */
  --bg2:var(--bg-subtle);
  --surface:var(--glass);
  --surface-2:var(--glass-2);
  --card:var(--glass);
  --card-hover:var(--glass-strong);
  --muted:var(--text-muted);
  --dim:var(--text-dim);
  --border:var(--line);
  --border-soft:var(--line);
  --cyan:var(--accent);
  --purple:var(--study);
  --green:var(--ok);
  --gold:var(--warn);
  --orange:var(--warn);
  --red:var(--danger);
  --grad:var(--grad-accent);
  --shadow:var(--glass-shadow);
  --shadow-lg:var(--glass-shadow);
}

/* ---------- TOKENS: DARK ---------- */
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#07070c;
    --bg-solid:#0b0b12;
    --bg-subtle:rgba(255,255,255,.03);

    --glass:rgba(26,26,38,.58);
    --glass-strong:rgba(32,32,46,.78);
    --glass-2:rgba(22,22,33,.44);
    --glass-brd:rgba(255,255,255,.10);
    --glass-edge:rgba(0,0,0,.5);
    --glass-shadow:0 8px 32px rgba(0,0,0,.45),0 2px 8px rgba(0,0,0,.3);

    --text:#f1f1f7;
    --text-muted:#a8a8c0;
    --text-dim:#8e8ea8;
    --line:rgba(255,255,255,.11);
    --line-strong:rgba(255,255,255,.2);

    --accent:#7cc0ff;
    --accent-2:#a9d8ff;
    --accent-hover:#a9d8ff;
    --accent-fg:#04101f;
    --accent-wash:rgba(124,192,255,.14);
    --grad-accent:linear-gradient(120deg,#2b90ff,#5aa9ff 52%,#9fd0ff);
  --grad-cta:linear-gradient(120deg,#2b90ff,#5aa9ff 52%,#9fd0ff);
    --grad-cta:linear-gradient(120deg,#2b90ff,#5aa9ff 52%,#9fd0ff);

    --amb-1:rgba(43,144,255,.22);
    --amb-2:rgba(21,82,184,.20);
    --amb-3:rgba(124,192,255,.12);
    --amb-4:rgba(43,144,255,.10);

    --ok:#4ade80;
    --info:#93c5fd;
    --warn:#fbbf24;
    --study:#d8b4fe;
    --idle:#9c9cb5;
    --danger:#fca5a5;

    --code-bg:rgba(8,8,14,.86);
  }
}
:root[data-theme="dark"]{
  --bg:#07070c;
  --bg-solid:#0b0b12;
  --bg-subtle:rgba(255,255,255,.03);

  --glass:rgba(26,26,38,.58);
  --glass-strong:rgba(32,32,46,.78);
  --glass-2:rgba(22,22,33,.44);
  --glass-brd:rgba(255,255,255,.10);
  --glass-edge:rgba(0,0,0,.5);
  --glass-shadow:0 8px 32px rgba(0,0,0,.45),0 2px 8px rgba(0,0,0,.3);

  --text:#f1f1f7;
  --text-muted:#a8a8c0;
  --text-dim:#8e8ea8;
  --line:rgba(255,255,255,.11);
  --line-strong:rgba(255,255,255,.2);

  --accent:#7cc0ff;
  --accent-2:#a9d8ff;
  --accent-hover:#a9d8ff;
  --accent-fg:#04101f;
  --accent-wash:rgba(124,192,255,.14);
  --grad-accent:linear-gradient(120deg,#2b90ff,#5aa9ff 52%,#9fd0ff);
  --grad-cta:linear-gradient(120deg,#2b90ff,#5aa9ff 52%,#9fd0ff);

  --amb-1:rgba(43,144,255,.22);
  --amb-2:rgba(21,82,184,.20);
  --amb-3:rgba(124,192,255,.12);
  --amb-4:rgba(43,144,255,.10);

  --ok:#4ade80;
  --info:#93c5fd;
  --warn:#fbbf24;
  --study:#d8b4fe;
  --idle:#9c9cb5;
  --danger:#fca5a5;

  --code-bg:rgba(8,8,14,.86);
}


.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
/* ---------- BASE ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--bg);color:var(--text);font-family:var(--font);
  font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;
  font-feature-settings:'cv02','cv03','cv04','cv11';
  overflow-x:hidden;position:relative;min-height:100%;
}
/* ambient colour field behind the glass */
body::before{
  content:'';position:fixed;inset:-20vh -10vw;z-index:-2;pointer-events:none;
  background:
    radial-gradient(46vw 46vw at 12% 4%,var(--amb-1),transparent 62%),
    radial-gradient(40vw 40vw at 88% 0%,var(--amb-3),transparent 60%),
    radial-gradient(50vw 50vw at 76% 42%,var(--amb-2),transparent 60%),
    radial-gradient(44vw 44vw at 8% 74%,var(--amb-4),transparent 62%);
  filter:blur(30px);
}
body::after{
  content:'';position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:linear-gradient(180deg,transparent 0%,var(--bg) 82%);
}
a{color:inherit;text-decoration:none}
strong{font-weight:650;color:var(--text)}
em{font-style:italic}
code,.mono{font-family:var(--mono);font-size:.9em}
img{max-width:100%}
::selection{background:var(--accent);color:var(--accent-fg)}

.container{max-width:1140px;margin:0 auto;padding:0 40px}
.container-narrow{max-width:800px;margin:0 auto;padding:0 40px}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:650;letter-spacing:-.024em;line-height:1.14}

/* gradient highlight text */
.gt{
  background:var(--grad-accent);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}

/* reusable glass surface */
.glass,.card,.p-card,.hero-visual,.mockup,.flow-node,.tag,.stat,.layer,.term,.callout,.notif{
  -webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);
}
@supports not ((backdrop-filter:blur(2px)) or (-webkit-backdrop-filter:blur(2px))){
  :root{--glass:rgba(255,255,255,.94);--glass-2:rgba(255,255,255,.88);--glass-strong:#fff}
  :root[data-theme="dark"]{--glass:rgba(24,24,34,.96);--glass-2:rgba(20,20,30,.94);--glass-strong:#1c1c28}
}

/* ---------- NAV (floating glass bar) ---------- */
.nav{position:sticky;top:0;z-index:1000;padding:12px 0;background:transparent;border:none}
.nav-inner{
  display:flex;align-items:center;gap:14px;max-width:1200px;margin:0 auto;padding:0 14px 0 18px;
  min-height:58px;flex-wrap:nowrap;border-radius:999px;
  background:var(--glass);border:1px solid var(--glass-brd);
  box-shadow:var(--glass-shadow),inset 0 1px 0 rgba(255,255,255,.35);
  -webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);
  transition:box-shadow .25s,background .25s;
}
:root[data-theme="dark"] .nav-inner{box-shadow:var(--glass-shadow),inset 0 1px 0 rgba(255,255,255,.07)}
.nav.scrolled .nav-inner{background:var(--glass-strong)}
.nav-logo{display:flex;align-items:center;gap:9px;font-size:.95rem;font-weight:680;letter-spacing:-.02em;flex-shrink:0;white-space:nowrap}
.nav-logo .logo-icon{width:36px;height:auto;max-height:30px;object-fit:contain;flex-shrink:0;display:block}
.nav-logo span{color:var(--text-muted);font-weight:500}
/* the mark is drawn in navy for light backgrounds — lift it on dark */
:root[data-theme="dark"] .nav-logo .logo-icon,
:root[data-theme="dark"] .brand-mark{filter:brightness(1.55) saturate(1.15)}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]) .nav-logo .logo-icon,
  :root:not([data-theme="light"]) .brand-mark{filter:brightness(1.55) saturate(1.15)}
}

/* tagline + motto */
.f-tag{
  font-family:var(--mono);font-size:.7rem;letter-spacing:.13em;text-transform:uppercase;
  color:var(--accent);margin:-4px 0 10px;font-weight:600;
}
.motto{
  display:inline-flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-family:var(--mono);font-size:.76rem;letter-spacing:.09em;text-transform:uppercase;
  color:var(--text-muted);font-weight:600;
}
.motto b{background:var(--grad-accent);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent;font-weight:700}
.motto .sep{color:var(--text-dim);font-weight:400}
.nav-links{display:flex;align-items:center;gap:17px;list-style:none;margin-left:auto;flex-wrap:nowrap;min-width:0}
.nav-links a{color:var(--text-muted);font-size:.82rem;font-weight:500;white-space:nowrap;transition:color .15s}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.nav-links a.active{font-weight:650}
.nav-cta{
  display:inline-flex;align-items:center;gap:7px;padding:8px 17px;border-radius:999px;
  font-size:.8rem;font-weight:650;background:var(--grad-cta);color:var(--accent-fg)!important;white-space:nowrap;flex-shrink:0;
  box-shadow:0 4px 16px rgba(21,82,184,.30);transition:transform .18s,box-shadow .18s;
}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 8px 24px rgba(21,82,184,.42)}
.theme-toggle{
  display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;
  border-radius:999px;background:var(--glass-2);border:1px solid var(--glass-brd);
  color:var(--text-muted);cursor:pointer;flex-shrink:0;transition:color .15s,background .15s;
}
.theme-toggle:hover{color:var(--text);background:var(--glass-strong)}
.theme-toggle svg{width:15px;height:15px}
.theme-toggle .icon-dark{display:none}
:root[data-theme="dark"] .theme-toggle .icon-dark{display:block}
:root[data-theme="dark"] .theme-toggle .icon-light{display:none}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]) .theme-toggle .icon-dark{display:block}
  :root:not([data-theme="light"]) .theme-toggle .icon-light{display:none}
}
.hamburger{
  display:none;background:var(--glass-2);border:1px solid var(--glass-brd);border-radius:999px;
  width:34px;height:34px;color:var(--text);font-size:1rem;cursor:pointer;line-height:1;
}

/* ---------- HERO ---------- */
.hero{padding:104px 40px 96px;text-align:left;position:relative}
.hero-content{max-width:1140px;margin:0 auto}
.hero-split{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.9fr);gap:48px;align-items:center}
.hero-copy{min-width:0}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:24px;padding:7px 15px;
  border-radius:999px;background:var(--glass);border:1px solid var(--glass-brd);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.4);
  -webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);
  font-family:var(--mono);font-size:.71rem;font-weight:500;letter-spacing:.07em;
  text-transform:uppercase;color:var(--text-muted);
}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--grad-accent)}
.hero h1{font-size:clamp(2.4rem,5.2vw,3.9rem);line-height:1.05;letter-spacing:-.034em;margin-bottom:22px;max-width:20ch;font-weight:690}
.hero-desc{font-size:clamp(1.05rem,1.7vw,1.3rem);color:var(--text-muted);max-width:56ch;line-height:1.55;margin-bottom:14px}
.hero-thesis{display:block;font-family:var(--mono);font-size:.78rem;color:var(--text-dim);letter-spacing:.02em;margin-bottom:36px}
.hero-buttons{display:flex;gap:12px;flex-wrap:wrap}

/* hero status panel */
.hero-visual{
  border:1px solid var(--glass-brd);border-radius:var(--radius-lg);background:var(--glass);
  box-shadow:var(--glass-shadow),inset 0 1px 0 rgba(255,255,255,.4);overflow:hidden;min-width:0;
}
:root[data-theme="dark"] .hero-visual{box-shadow:var(--glass-shadow),inset 0 1px 0 rgba(255,255,255,.07)}
.hv-head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 20px;
  background:var(--glass-2);border-bottom:1px solid var(--line);
  font-family:var(--mono);font-size:.69rem;letter-spacing:.07em;text-transform:uppercase;color:var(--text-dim);
}
.hv-list{list-style:none}
.hv-list li{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px 20px;border-bottom:1px solid var(--line);font-size:.87rem}
.hv-list li:last-child{border-bottom:none}
.hv-list .hv-name{font-weight:550}
.hv-foot{padding:12px 20px;background:var(--glass-2);border-top:1px solid var(--line);font-size:.76rem;color:var(--text-muted)}
.hv-foot a{color:var(--accent);font-weight:600}

/* ---------- SUB-NAV ---------- */
.subnav{position:sticky;top:82px;z-index:900;padding:0 0 4px}
.subnav-inner{
  display:flex;align-items:center;gap:4px;max-width:1140px;margin:0 auto;padding:5px 12px;
  height:48px;overflow-x:auto;scrollbar-width:none;border-radius:999px;
  background:var(--glass);border:1px solid var(--glass-brd);box-shadow:var(--glass-shadow);
  -webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);
}
.subnav-inner::-webkit-scrollbar{display:none}
.subnav a{padding:7px 13px;border-radius:999px;font-size:.8rem;font-weight:500;color:var(--text-muted);white-space:nowrap;transition:color .15s,background .15s}
.subnav a:hover{color:var(--text);background:var(--glass-2)}
.subnav a.current{color:var(--accent-fg);background:var(--grad-cta);font-weight:600}
section[id],div[id]{scroll-margin-top:96px}
body:has(.subnav) section[id],body:has(.subnav) div[id]{scroll-margin-top:150px}

/* ---------- PAGE HERO ---------- */
.page-hero{padding:72px 0 56px}
.page-hero .kicker{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:18px;padding:6px 14px;border-radius:999px;
  background:var(--glass);border:1px solid var(--glass-brd);
  -webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);
  font-family:var(--mono);font-size:.7rem;font-weight:500;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);
}
.page-hero h1{font-size:clamp(2rem,4.2vw,3.05rem);letter-spacing:-.03em;margin-bottom:18px;max-width:20ch}
.page-hero .lead{color:var(--text-muted);font-size:1.1rem;max-width:70ch;line-height:1.65}

/* ---------- BUTTONS ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:999px;
  font-size:.9rem;font-weight:650;border:1px solid transparent;cursor:pointer;
  transition:transform .18s,box-shadow .18s,background .18s;font-family:var(--font);
}
.btn-primary{background:var(--grad-cta);color:var(--accent-fg);box-shadow:0 6px 20px rgba(21,82,184,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(21,82,184,.44)}
.btn-ghost{
  background:var(--glass);border-color:var(--glass-brd);color:var(--text);
  -webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.4);
}
.btn-ghost:hover{background:var(--glass-strong);transform:translateY(-2px)}
.btn-sm{padding:8px 16px;font-size:.82rem}

/* ---------- SECTIONS ---------- */
section{padding:84px 0;position:relative}
.sec-alt{background:var(--bg-subtle);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-label{
  display:flex;align-items:center;gap:9px;margin-bottom:14px;
  font-family:var(--mono);font-size:.72rem;font-weight:600;letter-spacing:.09em;
  text-transform:uppercase;color:var(--accent);
}
.sec-label::before{content:'';width:18px;height:2px;border-radius:2px;background:var(--grad-accent);flex-shrink:0}
.sec-title{font-size:clamp(1.65rem,3.1vw,2.3rem);letter-spacing:-.028em;margin-bottom:16px;max-width:24ch}
.sec-desc{color:var(--text-muted);font-size:1.02rem;line-height:1.72;max-width:68ch;margin-bottom:44px}
.sec-desc.wide{max-width:78ch}
.sr,.sr.vis,.sr.d1,.sr.d2,.sr.d3,.sr.d4{opacity:1;transform:none;transition:none}

/* ---------- STATUS BADGES ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;
  font-family:var(--mono);font-size:.66rem;font-weight:600;letter-spacing:.07em;
  text-transform:uppercase;white-space:nowrap;border:1px solid currentColor;
}
.badge::before{content:'';width:5px;height:5px;border-radius:50%;background:currentColor;flex-shrink:0}
.badge-available{color:var(--ok);background:color-mix(in srgb,var(--ok) 12%,transparent)}
.badge-beta{color:var(--info);background:color-mix(in srgb,var(--info) 12%,transparent)}
.badge-experimental{color:var(--warn);background:color-mix(in srgb,var(--warn) 14%,transparent)}
.badge-research{color:var(--study);background:color-mix(in srgb,var(--study) 14%,transparent)}
.badge-soon{color:var(--idle);background:color-mix(in srgb,var(--idle) 12%,transparent)}

/* ---------- CARDS ---------- */
.card,.p-card{
  background:var(--glass);border:1px solid var(--glass-brd);border-radius:var(--radius);
  padding:26px;box-shadow:var(--glass-shadow),inset 0 1px 0 rgba(255,255,255,.35);
  transition:transform .25s,box-shadow .25s,background .25s;position:relative;overflow:hidden;
}
:root[data-theme="dark"] .card,:root[data-theme="dark"] .p-card{box-shadow:var(--glass-shadow),inset 0 1px 0 rgba(255,255,255,.06)}
.card:hover,.p-card:hover{transform:translateY(-3px);background:var(--glass-strong);box-shadow:0 16px 44px rgba(24,24,54,.14),inset 0 1px 0 rgba(255,255,255,.45)}
:root[data-theme="dark"] .card:hover,:root[data-theme="dark"] .p-card:hover{box-shadow:0 16px 44px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,255,255,.09)}
.p-card{display:block}
.p-card::after{content:'';position:absolute;inset:0 0 auto 0;height:2px;background:var(--grad-accent);opacity:0;transition:opacity .25s}
.p-card:hover::after{opacity:1}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}

.p-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.p-icon{
  width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:.95rem;font-weight:700;
  background:var(--grad-cta);color:var(--accent-fg);flex-shrink:0;box-shadow:0 4px 14px rgba(21,82,184,.28);
}
.p-card h3{font-size:1.08rem;font-weight:660;margin-bottom:3px}
.p-tag{display:block;font-size:.82rem;color:var(--text-muted);margin-bottom:12px}
.p-card p{color:var(--text-muted);font-size:.9rem;line-height:1.68;margin-bottom:16px}
.p-link{display:inline-flex;align-items:center;gap:5px;font-size:.82rem;font-weight:650;color:var(--accent)}

/* ---------- CODE / TERMINAL ---------- */
.term{
  background:var(--code-bg);border:1px solid var(--glass-brd);border-radius:var(--radius);
  padding:36px 22px 20px;font-family:var(--mono);font-size:.8rem;line-height:1.75;
  position:relative;overflow:hidden;color:var(--code-text);box-shadow:var(--glass-shadow);
}
.term::before{content:'';position:absolute;top:0;left:0;right:0;height:32px;background:rgba(255,255,255,.05);border-bottom:1px solid rgba(255,255,255,.08)}
.term .dots{position:absolute;top:12px;left:15px;display:flex;gap:6px;z-index:2}
.term .dots i{width:9px;height:9px;border-radius:50%;display:block}
.term .dots i:nth-child(1){background:#ff5f57}
.term .dots i:nth-child(2){background:#febc2e}
.term .dots i:nth-child(3){background:#28c840}
.term pre{margin-top:10px;overflow-x:auto;white-space:pre-wrap;color:#b6b6c8}
.kw{color:#c4b5fd}.fn{color:#93c5fd}.st{color:#6ee7b7}.cm{color:#8888a0}.nu{color:#fbbf24}


/* ---------- NAV PRODUCT DROPDOWN ---------- */
.nav-has-drop{position:relative}
.nav-has-drop>a::after{
  content:'';display:inline-block;margin-left:5px;vertical-align:middle;
  border:4px solid transparent;border-top-color:currentColor;transform:translateY(2px);
}
.nav-drop{
  display:none;position:absolute;top:calc(100% + 12px);left:-14px;min-width:216px;
  list-style:none;padding:8px;margin:0;
  background:var(--glass-strong);border:1px solid var(--glass-brd);border-radius:var(--radius);
  box-shadow:var(--glass-shadow);
  -webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);
  z-index:1000;
}
.nav-drop::before{content:'';position:absolute;top:-14px;left:0;right:0;height:14px}
.nav-has-drop:hover>.nav-drop,.nav-has-drop:focus-within>.nav-drop{display:block}
.nav-drop li{margin:0}
.nav-drop a{display:block;padding:9px 12px;border-radius:var(--radius-sm);font-size:.82rem;line-height:1.3;white-space:nowrap}
.nav-drop a:hover{background:var(--glass-2);color:var(--text)}
.nd-sub{display:block;font-size:.71rem;color:var(--text-dim);font-weight:400;margin-top:3px}

@media (max-width:1180px){
  .nav-has-drop{width:100%}
  .nav-has-drop>a::after{display:none}
  .nav-drop{
    display:block;position:static;min-width:0;width:100%;
    background:none;border:none;box-shadow:none;
    -webkit-backdrop-filter:none;backdrop-filter:none;
    padding:4px 0 0 14px;margin-top:7px;border-left:2px solid var(--glass-brd);
  }
  .nav-drop::before{display:none}
  .nav-drop a{padding:7px 0}
  .nd-sub{display:none}
}

/* ---------- FLOW DIAGRAM ---------- */
.flow{display:flex;align-items:stretch;gap:9px;flex-wrap:wrap;margin:26px 0}
.flow-node{
  background:var(--glass);border:1px solid var(--glass-brd);border-radius:var(--radius-sm);
  padding:13px 15px;font-size:.82rem;font-weight:560;text-align:center;flex:1;min-width:112px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.35);transition:transform .2s;
}
.flow-node:hover{transform:translateY(-2px)}
.flow-node.accent{border-color:transparent;color:var(--accent-fg);background:var(--grad-cta);box-shadow:0 6px 20px rgba(21,82,184,.32)}
.flow-node.warn{color:var(--danger);border-color:color-mix(in srgb,var(--danger) 40%,transparent);background:color-mix(in srgb,var(--danger) 10%,var(--glass))}
.flow-arrow{color:var(--text-dim);font-size:1rem;align-self:center}
.flow-sub{font-size:.7rem;color:var(--text-muted);font-weight:400;margin-top:3px}

/* ---------- LAYER STACK ---------- */
.layer-stack{display:flex;flex-direction:column;gap:8px;max-width:640px;margin:0 auto}
.layer{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:var(--glass);border:1px solid var(--glass-brd);border-left:3px solid var(--idle);
  border-radius:var(--radius-sm);padding:15px 20px;box-shadow:inset 0 1px 0 rgba(255,255,255,.3);
  transition:transform .2s,background .2s;
}
.layer:hover{transform:translateX(3px);background:var(--glass-strong)}
.layer.l-available{border-left-color:var(--ok)}
.layer.l-beta{border-left-color:var(--info)}
.layer.l-experimental{border-left-color:var(--warn)}
.layer.l-research{border-left-color:var(--study)}
.layer .lname{font-weight:650;font-size:.93rem}
.layer .ldesc{color:var(--text-muted);font-size:.78rem;margin-top:2px;line-height:1.5}
.layer-arrow{text-align:center;color:var(--text-dim);font-size:.75rem;line-height:1}

/* legacy node diagram */
.stack-visual{position:relative;min-height:340px}
.stack-center{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:88px;height:88px;border-radius:var(--radius);background:var(--grad-cta);display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:1.1rem;font-weight:700;color:var(--accent-fg);z-index:2;box-shadow:0 8px 28px rgba(21,82,184,.38)}
.stack-node{position:absolute;padding:11px 17px;border-radius:var(--radius-sm);background:var(--glass);border:1px solid var(--glass-brd);font-size:.78rem;font-weight:560;white-space:nowrap;z-index:2}
.stack-line{position:absolute;background:var(--line);z-index:1}

/* ---------- TABLE ---------- */
.tbl-wrap{
  overflow-x:auto;margin:32px 0;border:1px solid var(--glass-brd);border-radius:var(--radius);
  background:var(--glass);box-shadow:var(--glass-shadow);
  -webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);
}
table.dh{width:100%;border-collapse:collapse;font-size:.86rem;text-align:left}
table.dh thead{background:var(--glass-2)}
table.dh thead tr{border-bottom:1px solid var(--line)}
table.dh th{padding:13px 17px;color:var(--text-muted);font-weight:600;font-size:.71rem;text-transform:uppercase;letter-spacing:.06em;font-family:var(--mono);white-space:nowrap}
table.dh td{padding:13px 17px;border-bottom:1px solid var(--line);color:var(--text-muted);vertical-align:top}
table.dh td strong{color:var(--text)}
table.dh tbody tr:last-child td{border-bottom:none}
table.dh tbody tr:hover{background:var(--glass-2)}
.pos{color:var(--ok);font-weight:650}
.neg{color:var(--text-muted)}

/* ---------- STATS ---------- */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.stat{
  background:var(--glass);border:1px solid var(--glass-brd);border-radius:var(--radius);
  padding:26px 22px;box-shadow:var(--glass-shadow),inset 0 1px 0 rgba(255,255,255,.35);
  transition:transform .22s;
}
.stat:hover{transform:translateY(-3px)}
.stat-val{font-size:clamp(1.6rem,2.7vw,2.1rem);font-weight:700;letter-spacing:-.03em;margin-bottom:4px;background:var(--grad-accent);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.stat-label{font-family:var(--mono);font-size:.69rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.07em;font-weight:500}

/* ---------- CALLOUT ---------- */
.callout{
  background:var(--glass);border:1px solid var(--glass-brd);border-left:3px solid var(--accent);
  border-radius:var(--radius-sm);padding:20px 24px;color:var(--text-muted);
  font-size:.93rem;line-height:1.72;box-shadow:inset 0 1px 0 rgba(255,255,255,.3);
}
.callout strong{color:var(--text)}
.callout a{color:var(--accent);font-weight:600}

/* ---------- CTA BAND ---------- */
.cta-band{text-align:center;padding:92px 0;position:relative;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-subtle)}
.cta-band .sec-label{justify-content:center}
.cta-band h2{font-size:clamp(1.65rem,3.2vw,2.4rem);letter-spacing:-.028em;margin:0 auto 16px;max-width:22ch}
.cta-band p{color:var(--text-muted);max-width:56ch;margin:0 auto 30px}
.cta-band .hero-buttons{justify-content:center}

/* ---------- SPEC GRID ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:26px 0}
.spec-item{
  display:flex;align-items:flex-start;gap:9px;padding:13px 15px;font-size:.85rem;color:var(--text-muted);
  background:var(--glass);border:1px solid var(--glass-brd);border-radius:var(--radius-sm);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.3);
}
.spec-item .n{font-family:var(--mono);font-weight:700;font-size:.76rem;flex-shrink:0;padding-top:1px;color:var(--accent)}

/* ---------- TAGS ---------- */
.tagcloud{display:flex;flex-wrap:wrap;gap:8px;margin:24px 0}
.tag{
  background:var(--glass);border:1px solid var(--glass-brd);border-radius:999px;
  padding:8px 15px;font-size:.82rem;font-weight:500;color:var(--text-muted);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.3);transition:transform .2s,color .2s;
}
.tag:hover{transform:translateY(-2px);color:var(--text)}

/* ---------- MOCK DASHBOARD ---------- */
.mockup{background:var(--glass);border:1px solid var(--glass-brd);border-radius:var(--radius);overflow:hidden;box-shadow:var(--glass-shadow)}
.mockup-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:13px 19px;background:var(--glass-2);border-bottom:1px solid var(--line)}
.mockup-bar .mb-title{font-family:var(--mono);font-size:.76rem;color:var(--text-muted)}
.mockup-body{padding:6px 19px 19px}
.mockup-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px solid var(--line)}
.mockup-row:last-child{border-bottom:none}
.mockup-row .mr-label{font-size:.85rem;color:var(--text-muted)}
.mockup-row .mr-val{font-size:.88rem;font-weight:650;font-family:var(--mono);text-align:right}
.mockup-cert{margin-top:14px;padding:14px 17px;border-radius:var(--radius-sm);background:color-mix(in srgb,var(--ok) 12%,transparent);border:1px solid color-mix(in srgb,var(--ok) 35%,transparent);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px}
.mockup-cert .mc-label{font-family:var(--mono);font-size:.7rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.07em;white-space:nowrap}
.mockup-cert .mc-val{color:var(--ok);font-weight:700;font-family:var(--mono);font-size:.88rem;white-space:nowrap}

/* ---------- FLAGSHIP BAND ---------- */
.flagship{
  border:1px solid var(--glass-brd);border-radius:var(--radius-lg);position:relative;overflow:hidden;
  background:var(--glass);box-shadow:var(--glass-shadow),inset 0 1px 0 rgba(255,255,255,.4);
  -webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);margin-bottom:44px;
}
.flagship::before{content:'';position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad-accent)}
.flagship-inner{padding:36px 36px 34px;background:none}
.flagship-kicker{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:6px;font-family:var(--mono);font-size:.8rem;font-weight:500;color:var(--text)}
.flagship .flagship-version{font-family:var(--mono);font-size:.74rem;color:var(--text-dim);margin-bottom:18px}
.flagship h3{font-size:1.3rem;margin-bottom:6px}
.flagship-lede{font-size:1.2rem;font-weight:650;line-height:1.45;letter-spacing:-.02em;margin-bottom:16px;max-width:46ch}
.flagship p.body{color:var(--text-muted);font-size:.93rem;line-height:1.72;margin-bottom:16px;max-width:78ch}
.flagship-stat{
  display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;
  background:color-mix(in srgb,var(--ok) 10%,transparent);
  border:1px solid color-mix(in srgb,var(--ok) 32%,transparent);
  border-radius:var(--radius-sm);padding:15px 19px;margin-bottom:18px;max-width:60ch;
}
.flagship-stat .fs-num{font-family:var(--mono);font-size:1.3rem;font-weight:700;color:var(--ok);white-space:nowrap}
.flagship-stat .fs-label{color:var(--text-muted);font-size:.85rem;line-height:1.5}

/* ---------- FOOTER ---------- */
footer{border-top:1px solid var(--line);padding:56px 0 32px;background:var(--bg-subtle);position:relative}
.footer-grid{display:grid;grid-template-columns:2.2fr 1fr 1fr 1fr 1fr;gap:36px;margin-bottom:40px}
.footer-brand .f-logo{font-size:.98rem;font-weight:680;margin-bottom:10px;letter-spacing:-.02em}
.footer-brand .f-logo span{color:var(--text-muted);font-weight:500}
.footer-brand p{color:var(--text-muted);font-size:.85rem;line-height:1.68;max-width:34ch}
.f-col h5{font-family:var(--mono);font-size:.68rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--text-dim);margin-bottom:14px}
.f-col ul{list-style:none}
.f-col ul li{margin-bottom:9px}
.f-col ul a{color:var(--text-muted);font-size:.855rem;transition:color .15s}
.f-col ul a:hover{color:var(--accent)}
.legal-block{border-top:1px solid var(--line);padding-top:22px;margin-bottom:18px;color:var(--text-dim);font-size:.78rem;line-height:1.8;font-family:var(--mono)}
.legal-block strong{color:var(--text-muted);font-weight:500}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px;padding-top:20px;border-top:1px solid var(--line);font-size:.78rem;color:var(--text-dim)}
.footer-bottom .socials{display:flex;gap:14px}
.footer-bottom .socials a{color:var(--text-dim);transition:color .15s}
.footer-bottom .socials a:hover{color:var(--accent)}

/* ---------- RESPONSIVE ---------- */
@media (max-width:1024px){
  .grid-3,.grid-4{grid-template-columns:1fr 1fr}
  .stats-grid{grid-template-columns:1fr 1fr}
  .spec-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr;gap:28px}
}
@media (max-width:1180px){
  .hero-split{grid-template-columns:1fr;gap:40px}
  .nav-links{
    display:none;position:absolute;top:calc(100% + 8px);left:0;right:0;
    background:var(--glass-strong);border:1px solid var(--glass-brd);border-radius:var(--radius);
    box-shadow:var(--glass-shadow);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);
    flex-direction:column;align-items:flex-start;padding:18px 22px;gap:14px;margin-left:0;
  }
  .nav-links.open{display:flex}
  .theme-toggle{margin-left:auto}
  .hamburger{display:inline-flex;align-items:center;justify-content:center}
  .nav-inner{gap:10px;position:relative}
  .subnav{top:78px}
}
@media (max-width:768px){
  .container,.container-narrow{padding:0 20px}
  .nav{padding:10px 0}
  .nav-inner{padding:0 14px 0 16px;height:54px}
  .subnav-inner{padding:5px 8px;height:46px}
  .hero{padding:56px 20px 68px}
  .page-hero{padding:48px 0 42px}
  section{padding:62px 0}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .spec-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .flow{flex-direction:column}
  .flow-arrow{transform:rotate(90deg);align-self:center}
  .layer-stack{max-width:100%}
  .flagship-inner{padding:26px 20px}
  .stack-visual{min-height:auto}
}
@media (max-width:480px){
  .hero-buttons{flex-direction:column;align-items:stretch}
  .btn{justify-content:center}
  .stats-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
}

/* ---------- MOTION ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}