/* ==========================================================================
   Congestus — site stylesheet. Plain CSS, no build step, no web fonts.
   Tokens on :root, dark overrides on [data-theme="dark"]. Same structure as the
   other Diode Logic sites; the palette is the app icon's: sky blue, storm navy,
   and one sunlit amber for "the big one".
   ========================================================================== */
:root{color-scheme:light;
  --bg:#F5F8FD;--bg-elev:#FFFFFF;--bg-sunken:#EAF0F9;--ink:#0F1B33;--ink-2:#44506A;--ink-3:#74809A;
  --line:#DCE5F2;--line-strong:#C6D3E6;
  --accent:#2F6BEA;--accent-strong:#4F8BFF;--accent-ink:#FFFFFF;--accent-soft:rgba(79,139,255,.13);
  --sun:#FFA85C;--sun-2:#FFE1A3;--sun-soft:rgba(255,168,92,.16);
  --board:#0A1230;--board-2:#111C44;--board-ink:#EEF3FF;--board-ink-2:#A8B6D8;
  --radius-sm:10px;--radius:16px;--radius-lg:24px;
  --shadow-sm:0 1px 2px rgba(15,27,51,.06);
  --shadow:0 1px 2px rgba(15,27,51,.05),0 20px 48px -22px rgba(15,27,51,.35);
  --font:ui-sans-serif,-apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",Roboto,Inter,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;--container:1160px;--nav-h:66px}
[data-theme="dark"]{color-scheme:dark;
  --bg:#0A1020;--bg-elev:#111A2E;--bg-sunken:#070C18;--ink:#EAF0FF;--ink-2:#A8B4CF;--ink-3:#6E7A96;
  --line:#1D2842;--line-strong:#2A3858;--accent:#5B92FF;--accent-strong:#7DB4FF;--accent-ink:#06122E;
  --accent-soft:rgba(91,146,255,.16);--sun-soft:rgba(255,168,92,.14);
  --shadow-sm:0 1px 2px rgba(0,0,0,.4);--shadow:0 1px 2px rgba(0,0,0,.3),0 20px 44px -22px rgba(0,0,0,.75)}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.55;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.container{max-width:var(--container);margin:0 auto;padding:0 22px}
.skip-link{position:absolute;left:-999px;top:8px;background:var(--accent);color:var(--accent-ink);padding:8px 12px;border-radius:8px}.skip-link:focus{left:8px;z-index:100}

/* ---- nav ---- */
.nav{position:sticky;top:0;z-index:50;height:var(--nav-h);display:flex;align-items:center;
  background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:saturate(180%) blur(12px);-webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid transparent;transition:border-color .2s,background .2s}
.nav.scrolled{border-bottom-color:var(--line)}
.nav.on-board{background:color-mix(in srgb,var(--board) 68%,transparent);color:var(--board-ink);border-bottom-color:transparent}
.nav .container{display:flex;align-items:center;gap:18px;width:100%}
.brand{display:flex;align-items:center;gap:10px;font-weight:750;letter-spacing:-.01em;color:inherit;font-size:18px}.brand img{width:32px;height:32px}.brand:hover{text-decoration:none}
.nav-links{display:flex;gap:4px;margin-left:8px}.nav-links a{color:inherit;opacity:.85;padding:8px 10px;border-radius:8px;font-size:15px}
.nav-links a:hover{opacity:1;background:color-mix(in srgb,currentColor 9%,transparent);text-decoration:none}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:8px}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;min-width:36px;height:36px;padding:0 10px;border-radius:10px;
  border:1px solid color-mix(in srgb,currentColor 18%,transparent);background:transparent;color:inherit;font:inherit;font-size:14px;font-weight:600;cursor:pointer}
.icon-btn:hover{background:color-mix(in srgb,currentColor 9%,transparent);text-decoration:none}
.nav-burger{display:none}
@media (max-width:860px){.nav-links{display:none;position:absolute;top:var(--nav-h);left:0;right:0;flex-direction:column;background:var(--bg-elev);border-bottom:1px solid var(--line);padding:10px 14px;color:var(--ink)}.nav-links.open{display:flex}.nav-burger{display:inline-flex}}

/* ---- buttons ---- */
.btn{display:inline-flex;align-items:center;gap:10px;padding:12px 20px;border-radius:12px;font-weight:650;font-size:16px;border:1px solid transparent;cursor:pointer;transition:transform .08s,box-shadow .2s,opacity .2s;font-family:inherit}
.btn:hover{text-decoration:none;transform:translateY(-1px)}.btn svg{width:20px;height:20px;flex:none}
.btn-primary{background:linear-gradient(180deg,var(--accent-strong),var(--accent));color:#fff;box-shadow:0 10px 28px -12px rgba(47,107,234,.8)}
[data-theme="dark"] .btn-primary{color:#06122E}
.btn-sun{background:linear-gradient(180deg,var(--sun-2),var(--sun));color:#2A1600;box-shadow:0 10px 28px -12px rgba(255,140,60,.75)}
.btn-ghost{background:transparent;border-color:color-mix(in srgb,currentColor 26%,transparent);color:inherit}
.btn-lg{padding:15px 26px;font-size:17px}
.btn[aria-disabled="true"]{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}

/* ---- hero on the storm board ---- */
.board{position:relative;overflow:hidden;color:var(--board-ink);
  background:radial-gradient(900px 520px at 12% -8%,rgba(125,180,255,.30),transparent 62%),
             radial-gradient(760px 480px at 92% 105%,rgba(255,168,92,.22),transparent 60%),
             linear-gradient(180deg,var(--board) 0%,var(--board-2) 100%)}
.board-cloud{position:absolute;right:-160px;top:-140px;width:560px;opacity:.07;pointer-events:none;animation:drift 18s ease-in-out infinite alternate}
@keyframes drift{from{transform:translate(0,0)}to{transform:translate(-30px,14px)}}
.hero{position:relative;padding-top:76px;padding-bottom:64px}.hero-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:48px;align-items:center}
@media (max-width:960px){.hero-grid{grid-template-columns:1fr}.board-cloud{display:none}}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:650;letter-spacing:.08em;text-transform:uppercase;color:var(--accent-strong)}
.board .eyebrow{color:#9CC4FF}
.hero h1{font-size:clamp(38px,5vw,60px);line-height:1.04;letter-spacing:-.035em;margin:14px 0 18px;font-weight:820;text-wrap:balance}
.grad{background:linear-gradient(90deg,#9CC4FF 0%,#FFE1A3 55%,#FFA85C 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero h1 .grad{display:block;text-wrap:balance}
.hero .lead{font-size:19px;color:var(--board-ink-2);max-width:54ch;margin:0 0 28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.hero-meta{margin:18px 0 0;color:var(--board-ink-2);font-size:14px;display:flex;flex-wrap:wrap;gap:8px 18px}
.hero-meta span{display:inline-flex;align-items:center;gap:7px}.hero-meta span::before{content:"";width:7px;height:7px;border-radius:2px;background:linear-gradient(135deg,#7DB4FF,#FFA85C)}

/* ---- window frame around app screenshots ---- */
.window{border-radius:14px;overflow:hidden;background:#161c2b;box-shadow:0 34px 90px -34px rgba(0,0,0,.8),0 0 0 1px rgba(255,255,255,.07)}
.board .window{box-shadow:0 40px 100px -30px rgba(40,90,220,.55),0 0 0 1px rgba(255,255,255,.08)}
.window-bar{height:32px;display:flex;align-items:center;gap:7px;padding:0 12px;background:#242b3b}
.window-bar i{width:11px;height:11px;border-radius:50%;background:#ff5f57;display:block}.window-bar i:nth-child(2){background:#febc2e}.window-bar i:nth-child(3){background:#28c840}
.window-bar b{margin-left:10px;font:600 12px var(--font);color:#9aa6c2;letter-spacing:.01em}
.window img{width:100%}.window .light{display:block}.window .dark{display:none}
[data-theme="dark"] .window .light{display:none}[data-theme="dark"] .window .dark{display:block}

/* ---- sections ---- */
.section{padding:84px 0}.section-alt{background:var(--bg-sunken)}
.section-head{max-width:66ch;margin-bottom:36px}.section-head h2{font-size:clamp(28px,3.4vw,40px);letter-spacing:-.025em;margin:0 0 10px;line-height:1.12;text-wrap:balance}
.section-head p{margin:0;color:var(--ink-2);font-size:17px}.center{text-align:center;margin-left:auto;margin-right:auto}

/* "what it finds": a bento grid that is itself a small treemap */
.finds{display:grid;grid-template-columns:repeat(6,1fr);grid-auto-rows:118px;gap:12px}
.tile{position:relative;border-radius:16px;padding:18px 20px;color:#0F1B33;overflow:hidden;box-shadow:var(--shadow-sm)}
.tile h3{margin:0 0 4px;font-size:18px;letter-spacing:-.01em}.tile p{margin:0;font-size:14px;opacity:.82;max-width:40ch}
.tile .tag{display:inline-block;margin-bottom:8px;font:600 11px var(--mono);letter-spacing:.04em;text-transform:uppercase;opacity:.65}
.t1{grid-column:span 3;grid-row:span 2;background:linear-gradient(160deg,#FFE1A3,#FFA85C)}
.t2{grid-column:span 3;background:linear-gradient(160deg,#CFE1FF,#9CC4FF)}
.t3{grid-column:span 2;background:linear-gradient(160deg,#D9F2E3,#A8E0BF)}
.t4{grid-column:span 1;background:linear-gradient(160deg,#EADCFF,#CDB4FF)}
.t5{grid-column:span 2;background:linear-gradient(160deg,#FFE0E6,#FFB8C6)}
.t6{grid-column:span 2;background:linear-gradient(160deg,#DDF5F7,#A9E2EA)}
.t7{grid-column:span 2;background:linear-gradient(160deg,#E7ECF5,#C9D4E6)}
@media (max-width:860px){.finds{grid-template-columns:repeat(2,1fr);grid-auto-rows:auto}.finds .tile{grid-column:span 2;grid-row:auto;min-height:110px}.t1{min-height:180px}}

.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media (max-width:960px){.grid-3{grid-template-columns:repeat(2,1fr)}}@media (max-width:640px){.grid-3{grid-template-columns:1fr}}
.card{background:var(--bg-elev);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm)}
.card h3{margin:12px 0 6px;font-size:18px;letter-spacing:-.01em}.card p{margin:0;color:var(--ink-2);font-size:15px}
.icon-badge{width:42px;height:42px;border-radius:12px;background:var(--accent-soft);color:var(--accent);display:inline-flex;align-items:center;justify-content:center}
.icon-badge svg{width:22px;height:22px}.icon-badge.sun{background:var(--sun-soft);color:#E07A1F}

/* screenshot tabs */
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.tab{font:600 15px var(--font);padding:9px 16px;border-radius:999px;border:1px solid var(--line-strong);background:var(--bg-elev);color:var(--ink-2);cursor:pointer}
.tab[aria-selected="true"]{background:var(--accent);border-color:var(--accent);color:#fff}[data-theme="dark"] .tab[aria-selected="true"]{color:#06122E}
.shot[hidden]{display:none}.shot figcaption{margin-top:12px;color:var(--ink-2);font-size:15px}

/* story */
.story{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
@media (max-width:900px){.story{grid-template-columns:1fr}}
.story p{color:var(--ink-2);font-size:17px}.story blockquote{margin:22px 0 0;padding:14px 18px;border-left:3px solid var(--sun);background:var(--sun-soft);border-radius:0 12px 12px 0;color:var(--ink);font-size:16px}
.story-art{background:linear-gradient(180deg,#A9C8FF 0%,#DDEAFF 100%);border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;box-shadow:var(--shadow)}
[data-theme="dark"] .story-art{background:linear-gradient(180deg,#1B2C5C 0%,#0E1733 100%)}
.story-art svg{width:100%;height:auto;display:block;color:var(--ink)}.story-art figcaption{display:flex;justify-content:space-between;font-size:13px;color:var(--ink-3);margin-top:8px}

/* platforms */
.platforms{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}@media (max-width:900px){.platforms{grid-template-columns:1fr}}
.platform{background:var(--bg-elev);border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:10px}
.platform h3{margin:0;font-size:20px}.platform .facts{color:var(--ink-2);font-size:14px;margin:0 0 6px}.platform .btn{justify-content:center;margin-top:auto}
.platform .sha{display:none}.platform.ready .sha{display:block}
code,.mono{font-family:var(--mono);font-size:13px}
.sha{word-break:break-all;background:var(--bg-sunken);border:1px solid var(--line);border-radius:10px;padding:8px 10px;font-size:12px;color:var(--ink-2)}

/* pricing */
.plans{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;max-width:900px}@media (max-width:700px){.plans{grid-template-columns:1fr}}
.plan{position:relative;background:var(--bg-elev);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow-sm)}
.plan.featured{border-color:color-mix(in srgb,var(--accent) 50%,var(--line));box-shadow:var(--shadow)}
.plan .price{font-size:46px;font-weight:820;letter-spacing:-.03em;margin:6px 0 2px}.plan .price small{font-size:15px;font-weight:500;color:var(--ink-3);letter-spacing:0;margin-left:6px}
.plan .per{color:var(--ink-3);font-size:14px;margin-bottom:16px}.plan ul{list-style:none;padding:0;margin:0 0 22px}
.plan li{padding:6px 0 6px 28px;position:relative;color:var(--ink-2);font-size:15px}
.plan li::before{content:"";position:absolute;left:0;top:10px;width:17px;height:17px;border-radius:6px;background:var(--accent-soft)}
.plan li::after{content:"";position:absolute;left:5px;top:14px;width:7px;height:4px;border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(-45deg)}
.note{font-size:13px;color:var(--ink-3)}

/* faq */
.faq{max-width:780px}.faq details{border-bottom:1px solid var(--line);padding:15px 0}
.faq summary{cursor:pointer;font-weight:650;font-size:17px;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}.faq summary::after{content:"+";color:var(--ink-3);font-weight:400}.faq details[open] summary::after{content:"–"}
.faq p{color:var(--ink-2);margin:10px 0 0;max-width:70ch}

/* closing call to action */
.cta{border-radius:var(--radius-lg);padding:44px;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;color:var(--board-ink);
  background:radial-gradient(600px 300px at 90% 120%,rgba(255,168,92,.25),transparent 60%),linear-gradient(135deg,#132457,#0A1230)}
.cta h2{margin:0;font-size:clamp(24px,3vw,34px);letter-spacing:-.02em}.cta p{margin:6px 0 0;color:var(--board-ink-2)}

/* prose (legal, buy) */
.prose{max-width:76ch;margin:0 auto;padding:40px 22px 80px}.prose h1{letter-spacing:-.02em;font-size:36px;line-height:1.15}.prose h2{margin-top:32px;font-size:22px}
.prose pre{background:var(--bg-sunken);border:1px solid var(--line);border-radius:10px;padding:14px;overflow:auto;font-size:13px;line-height:1.45}
.prose code{background:var(--bg-sunken);padding:1px 5px;border-radius:5px}.prose pre code{background:none;padding:0}.prose p,.prose li{color:var(--ink-2)}
.notice{background:var(--sun-soft);border:1px solid color-mix(in srgb,var(--sun) 45%,var(--line));border-radius:12px;padding:12px 16px;color:var(--ink)}

/* footer */
.footer{padding:44px 0;border-top:1px solid var(--line);color:var(--ink-2);font-size:14px}
.footer-grid{display:flex;flex-wrap:wrap;gap:16px 28px;align-items:center;justify-content:space-between}.footer a{color:inherit}
.footer-legal{display:flex;flex-wrap:wrap;gap:8px 18px}.footer .by{display:inline-flex;align-items:center;gap:8px}.footer .by img{width:22px;height:22px}

.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s ease,transform .55s ease}.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}.board-cloud{animation:none}html{scroll-behavior:auto}}