/* ============================================================
   NOVA · SHARED LAYER  (single source of truth for every page)
   Tokens · base · reusable components · navigation · footer.
   Linked by index.html and download-center.html so no page
   carries a parallel copy. Page-specific CSS stays in the page.
   ============================================================ */

/* ---- tokens (mirrors styles/tokens.css) ---- */
:root{
  --bg-0:#08090C; --bg-1:#0E0F14; --bg-2:#14161D; --bg-3:#1A1D26;
  --border-subtle:rgba(255,255,255,.07); --border-default:rgba(255,255,255,.12); --border-strong:rgba(255,255,255,.22);
  --text-primary:#F4F5F7; --text-secondary:#A7ACB8; --text-tertiary:#8F96A6;
  --iris-300:#B4A9FF; --iris-500:#8A7CFF; --iris-600:#6C5AE0; --iris-700:#5646BE;
  --iris-glow:rgba(138,124,255,.18); --iris-faint:rgba(138,124,255,.08);
  --btn-grad-a:#8579F0; --btn-grad-b:#6A5DD4;
  --success:#3DD68C; --warning:#F5B84C; --cloud:#5CA8FF; --cloud-bg:rgba(92,168,255,.10); --success-bg:rgba(61,214,140,.10);
  --glass-bg:rgba(14,15,20,.72); --glass-blur:blur(20px) saturate(1.4); --glass-border:rgba(255,255,255,.08);
  --shadow-1:0 1px 2px rgba(0,0,0,.4); --shadow-2:0 2px 8px rgba(0,0,0,.45); --shadow-3:0 8px 24px rgba(0,0,0,.5); --shadow-4:0 16px 48px rgba(0,0,0,.55);
  --shadow-glow:0 0 0 1px var(--border-subtle),0 8px 32px var(--iris-glow);
  --space-1:4px; --space-2:8px; --space-3:12px; --space-4:16px; --space-5:24px; --space-6:32px; --space-7:40px; --space-8:48px; --space-9:64px; --space-10:80px;
  --dur-hover:150ms; --dur-select:220ms; --dur-content:300ms; --dur-reveal:450ms;
  --dur-fade:200ms; --dur-glass:250ms; --dur-slow:320ms; --dur-base:200ms; --dur-page:var(--dur-reveal);
  --ease-out:cubic-bezier(.22,1,.36,1);
  --focus-ring:0 0 0 2px var(--bg-0),0 0 0 4px var(--iris-500);
  --radius-sm:8px; --radius-md:12px; --radius-lg:16px; --radius-btn:16px; --radius-nav:24px; --radius-xl:24px; --radius-2xl:32px; --radius-pill:999px;
  --font-display:'Space Grotesk',sans-serif; --font-body:'Inter',sans-serif; --font-mono:'JetBrains Mono',monospace;
  --anchor-clearance:calc(96px + .3cm);
}
[data-theme="light"]{
  --bg-0:#FAFAFC; --bg-1:#F3F3F7; --bg-2:#FFFFFF; --bg-3:#FFFFFF;
  --border-subtle:rgba(20,22,29,.07); --border-default:rgba(20,22,29,.12); --border-strong:rgba(20,22,29,.24);
  --text-primary:#16181D; --text-secondary:#4E5461; --text-tertiary:#8A8F9C;
  --iris-300:#7A68F0; --iris-500:#6C5AE0; --iris-600:#5B4AD1; --iris-700:#4A3BB8; --iris-glow:rgba(108,90,224,.14); --iris-faint:rgba(108,90,224,.06);
  --btn-grad-a:#6E61D8; --btn-grad-b:#5D50C4; --success:#188A54; --warning:#9A6A0B; --cloud:#1F6FC4; --cloud-bg:rgba(31,111,196,.08); --success-bg:rgba(24,138,84,.08);
  --glass-bg:rgba(250,250,252,.72); --glass-border:rgba(20,22,29,.08);
  --shadow-1:0 1px 2px rgba(20,22,29,.06); --shadow-2:0 2px 8px rgba(20,22,29,.08); --shadow-3:0 8px 24px rgba(20,22,29,.10); --shadow-4:0 16px 48px rgba(20,22,29,.14);
}
@media (prefers-color-scheme: light){html:not(.js){
  --bg-0:#FAFAFC; --bg-1:#F3F3F7; --bg-2:#FFFFFF; --bg-3:#FFFFFF;
  --border-subtle:rgba(20,22,29,.07); --border-default:rgba(20,22,29,.12); --border-strong:rgba(20,22,29,.24);
  --text-primary:#16181D; --text-secondary:#4E5461; --text-tertiary:#8A8F9C;
  --iris-300:#7A68F0; --iris-500:#6C5AE0; --iris-600:#5B4AD1; --iris-700:#4A3BB8; --iris-glow:rgba(108,90,224,.14); --iris-faint:rgba(108,90,224,.06);
  --btn-grad-a:#6E61D8; --btn-grad-b:#5D50C4; --success:#188A54; --warning:#9A6A0B; --cloud:#1F6FC4; --cloud-bg:rgba(31,111,196,.08); --success-bg:rgba(24,138,84,.08);
  --glass-bg:rgba(250,250,252,.72); --glass-border:rgba(20,22,29,.08);
  --shadow-1:0 1px 2px rgba(20,22,29,.06); --shadow-2:0 2px 8px rgba(20,22,29,.08); --shadow-3:0 8px 24px rgba(20,22,29,.10); --shadow-4:0 16px 48px rgba(20,22,29,.14);
}}

/* ---- base ---- */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:var(--anchor-clearance)}
body{background:var(--bg-0);color:var(--text-primary);font-family:var(--font-body);font-size:15px;line-height:24px;-webkit-font-smoothing:antialiased;
  transition:background var(--dur-slow) var(--ease-out),color var(--dur-slow) var(--ease-out)}
::selection{background:var(--iris-glow)}
h1,h2,h3,h4{font-family:var(--font-display);letter-spacing:-.02em}
a{color:inherit}
[id]{scroll-margin-top:var(--anchor-clearance)}
:focus-visible{outline:none;box-shadow:var(--focus-ring);border-radius:var(--radius-sm)}
.skip-link{position:absolute;left:16px;top:-48px;z-index:200;background:var(--iris-600);color:#fff;padding:10px 16px;border-radius:var(--radius-md);font-weight:500;text-decoration:none;transition:top var(--dur-fade) var(--ease-out)}
.skip-link:focus{top:16px}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}html{scroll-behavior:auto}.reveal{opacity:1!important;transform:none!important}}
.wrap{width:100%;max-width:1440px;margin:0 auto;padding:0 48px}
.anim .reveal{opacity:0;transform:translateY(12px);transition:opacity var(--dur-reveal) var(--ease-out),transform var(--dur-reveal) var(--ease-out)}
.anim .reveal.is-visible{opacity:1;transform:none}

/* ---- reusable components ---- */
.section-head{text-align:center;max-width:720px;margin:0 auto}
.kicker{font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--iris-500)}
.section-head h2{margin-top:14px;font-family:var(--font-display);font-weight:600;font-size:clamp(28px,3.2vw,38px);line-height:1.16;letter-spacing:-.02em}
.section-head .sub{margin:16px auto 0;max-width:56ch;color:var(--text-secondary);font-size:16px;line-height:25px}

.btn-download{display:inline-flex;align-items:center;justify-content:center;gap:9px;height:44px;padding:0 26px;border:0;cursor:pointer;text-decoration:none;white-space:nowrap;
  font:500 15px/1 var(--font-body);color:#fff;background:linear-gradient(180deg,var(--btn-grad-a),var(--btn-grad-b));border-radius:var(--radius-btn);
  box-shadow:0 3px 12px var(--iris-faint),0 1px 4px var(--iris-glow),inset 0 1px 0 rgba(255,255,255,.10);
  transition:transform var(--dur-hover) var(--ease-out),box-shadow var(--dur-hover) var(--ease-out),filter var(--dur-hover) var(--ease-out)}
.btn-download:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 6px 20px var(--iris-glow),inset 0 1px 0 rgba(255,255,255,.10)}
.btn-download:active{transform:translateY(0);filter:none}
.btn-lg{height:52px;padding:0 28px;font-size:16px;border-radius:var(--radius-lg)}
.btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;cursor:pointer;text-decoration:none;white-space:nowrap;
  font:500 14px/1 var(--font-body);color:var(--text-primary);background:transparent;border:1px solid var(--border-default);border-radius:var(--radius-btn);
  transition:border-color var(--dur-hover) var(--ease-out),background var(--dur-hover) var(--ease-out)}
.btn-secondary:hover{border-color:var(--border-strong);background:var(--bg-2)}
.btn-spinner{width:16px;height:16px;border-radius:50%;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;display:inline-block;animation:btnSpin .7s linear infinite}
@keyframes btnSpin{to{transform:rotate(360deg)}}
.badge{display:inline-flex;align-items:center;gap:7px;padding:6px 13px;border-radius:var(--radius-pill);border:1px solid var(--border-subtle);background:var(--bg-1);color:var(--text-secondary);font-size:12px;font-weight:500;line-height:1}
.badge svg{color:var(--success);flex-shrink:0}
.badge-cloud{color:var(--cloud);background:var(--cloud-bg);border-color:transparent}
.badge-cloud i{width:6px;height:6px;border-radius:50%;background:var(--cloud);flex-shrink:0}
.badge-soon{color:var(--warning)}
.badge-soon i{width:6px;height:6px;border-radius:50%;background:var(--warning);flex-shrink:0}
.icon-box{width:44px;height:44px;border-radius:var(--radius-md);background:var(--iris-glow);display:grid;place-items:center;color:var(--iris-500);flex-shrink:0}

/* ---- navigation (identical across pages) ---- */
.nav-shell{position:fixed;top:0;left:0;right:0;z-index:100;padding:0;transition:padding var(--dur-glass) var(--ease-out)}
.js .nav-shell{animation:navIn var(--dur-fade) var(--ease-out) both}
@keyframes navIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
.nav{position:relative;max-width:1440px;margin:0 auto;height:72px;display:flex;align-items:center;justify-content:space-between;padding:0 48px;
  background:transparent;border:1px solid transparent;border-radius:var(--radius-nav);transition:background var(--dur-glass) var(--ease-out),border-color var(--dur-glass) var(--ease-out),box-shadow var(--dur-glass) var(--ease-out)}
.nav-shell.is-scrolled{padding:12px 16px}
.nav-shell.is-scrolled .nav{background:var(--glass-bg);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border-color:var(--glass-border);box-shadow:var(--shadow-3)}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){.nav-shell.is-scrolled .nav{background:var(--bg-1)}}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text-primary);font-family:var(--font-display);font-weight:600;font-size:18px;letter-spacing:-.01em;border-radius:var(--radius-pill);padding:6px 10px 6px 6px}
.brand-mark{width:24px;height:24px;display:block;object-fit:contain;flex:0 0 auto;filter:drop-shadow(0 5px 12px rgba(105,86,245,.18));transition:filter var(--dur-hover) var(--ease-out),transform var(--dur-hover) var(--ease-out)}
.brand-mark-sm{width:1.05em;height:1.05em;display:inline-block;vertical-align:-.14em;filter:none}
.logo:hover .brand-mark,.foot-logo:hover .brand-mark{filter:drop-shadow(0 0 8px var(--iris-glow));transform:translateY(-1px)}
.nav-links{display:flex;align-items:center;gap:6px;list-style:none;position:absolute;left:50%;transform:translateX(-50%)}
.nav-links a{position:relative;display:inline-block;padding:12px 22px;color:var(--text-secondary);text-decoration:none;font-size:16px;font-weight:550;line-height:1;border-radius:var(--radius-pill);transition:color var(--dur-hover) var(--ease-out)}
.nav-links a::after{content:"";position:absolute;left:22px;right:22px;bottom:6px;height:1.5px;border-radius:1px;background:var(--text-primary);transform:scaleX(0);transform-origin:right;transition:transform var(--dur-hover) var(--ease-out)}
.nav-links a:hover,.nav-links a:focus-visible{color:var(--text-primary)}
.nav-links a:hover::after,.nav-links a:focus-visible::after{transform:scaleX(1);transform-origin:left}
.nav-links a[aria-current="page"]{color:var(--iris-500)}
.nav-links a[aria-current="page"]::after{display:none}
.nav-actions{display:flex;align-items:center;gap:12px}
.seg{display:flex;align-items:center;padding:3px;gap:2px;border:1px solid var(--border-default);border-radius:var(--radius-pill)}
.seg button{width:36px;height:36px;display:grid;place-items:center;cursor:pointer;background:transparent;border:0;border-radius:var(--radius-pill);color:var(--text-tertiary);transition:background var(--dur-hover) var(--ease-out),color var(--dur-hover) var(--ease-out)}
.seg button:hover{color:var(--text-primary)}
.seg button[aria-pressed="true"]{background:var(--bg-3);color:var(--text-primary);box-shadow:var(--shadow-1)}
html:not(.js) .seg{display:none}
.nav .btn-download{height:44px}
.hamburger{display:none;width:44px;height:44px;place-items:center;cursor:pointer;background:transparent;border:1px solid var(--border-default);border-radius:var(--radius-pill);color:var(--text-primary);transition:background var(--dur-hover) var(--ease-out)}
.hamburger:hover{background:var(--bg-2)}
.scrim{position:fixed;inset:0;z-index:110;background:rgba(0,0,0,.5);opacity:0;pointer-events:none;transition:opacity var(--dur-glass) var(--ease-out)}
.scrim.is-open{opacity:1;pointer-events:auto}
.sheet{position:fixed;top:12px;right:12px;bottom:12px;z-index:120;width:min(360px,90vw);background:var(--glass-bg);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  border:1px solid var(--glass-border);border-radius:var(--radius-nav);box-shadow:var(--shadow-4);display:flex;flex-direction:column;padding:16px 20px 24px;transform:translateX(calc(100% + 24px));transition:transform var(--dur-glass) var(--ease-out);visibility:hidden}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){.sheet{background:var(--bg-1)}}
.sheet.is-open{transform:none;visibility:visible}
.sheet-head{height:56px;display:flex;align-items:center;justify-content:space-between}
.sheet-close{width:48px;height:48px;display:grid;place-items:center;cursor:pointer;background:transparent;border:1px solid var(--border-default);border-radius:var(--radius-pill);color:var(--text-primary)}
.sheet-close:hover{background:var(--bg-2)}
.sheet-links{list-style:none;margin-top:16px;display:grid;gap:4px}
.sheet-links a{display:flex;align-items:center;justify-content:space-between;padding:0 16px;min-height:56px;border-radius:var(--radius-btn);color:var(--text-primary);text-decoration:none;font-weight:500;font-size:17px;transition:background var(--dur-hover) var(--ease-out)}
.sheet-links a:hover,.sheet-links a[aria-current="page"]{background:var(--bg-2)}
.sheet-links a[aria-current="page"]{color:var(--iris-500)}
.sheet-links a svg{color:var(--text-tertiary)}
.sheet-foot{margin-top:auto;display:grid;gap:12px}
.sheet-foot .btn-download{height:52px;font-size:16px}
.sheet-theme{display:flex;align-items:center;justify-content:space-between;padding:8px 8px 8px 16px;min-height:56px;border:1px solid var(--border-default);border-radius:var(--radius-btn);color:var(--text-secondary);font-weight:500;font-size:14px}
[data-theme="dark"] .icon-sun{display:none}[data-theme="light"] .icon-moon{display:none}

/* ---- footer (identical across pages) ---- */
.foot{position:relative;background:#050609;border-top:1px solid var(--border-subtle);padding:100px 0 60px}
[data-theme="light"] .foot{background:#EEEEF2}
.foot-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1fr;gap:40px}
.foot-brand{max-width:240px}
.foot-logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--text-primary);font-family:var(--font-display);font-weight:600;font-size:18px;cursor:pointer}
.foot-brand p{margin-top:14px;font-size:13px;line-height:20px;color:var(--text-tertiary);max-width:30ch}
.foot-egg{margin-top:12px;font-family:var(--font-mono);font-size:11px;color:var(--iris-500);opacity:0;transition:opacity var(--dur-slow) var(--ease-out)}
.foot-egg.show{opacity:1}
.foot-heading{font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--text-primary);margin:0 0 14px}
.foot-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.foot-col a{font-size:13px;color:var(--text-tertiary);text-decoration:none;transition:color var(--dur-hover) var(--ease-out)}
.foot-col a:hover{color:var(--text-primary)}
.foot-contact{margin-top:24px;font-size:13px;color:var(--text-tertiary);display:grid;gap:6px}
.foot-contact a{color:var(--text-secondary);text-decoration:none}
.foot-contact a:hover{color:var(--text-primary)}
.foot-div{height:1px;background:var(--border-subtle);margin:48px 0 28px}
.foot-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:12px;color:var(--text-tertiary)}
.foot-bottom .mid{font-family:var(--font-mono);font-size:11px}
.foot-bottom .mid .st{color:var(--success)}
.foot-bottom .right{max-width:38ch;text-align:right}

/* ---- shared responsive (nav + footer + wrap) ----
   Nav collapses to the hamburger at 768px, exactly matching the homepage. */
@media (max-width:1024px){
  .wrap{padding:0 32px}
  .foot-top{grid-template-columns:1fr 1fr;gap:36px}
  .foot-brand{grid-column:1 / -1;max-width:none}
}
@media (max-width:768px){
  html,body{max-width:100%;overflow-x:hidden}
  .wrap{padding:0 20px}
  .nav-links{display:none}
  .nav-actions .seg,.nav-actions .btn-download{display:none}
  .hamburger{display:grid}
  html:not(.js) .hamburger{display:none}
  html:not(.js) .nav-shell{position:absolute}
  html:not(.js) .nav{height:auto;min-height:72px;flex-wrap:wrap;padding:12px 20px}
  .foot{padding:72px 0 48px}
  .foot-top{grid-template-columns:1fr;gap:32px;text-align:center}
  .foot-brand{max-width:none}
.foot-contact{justify-items:center}
  .foot-bottom{flex-direction:column;text-align:center}
  .foot-bottom .right{text-align:center;max-width:none}
}