/* ============================================================
   YUME SYSTEMS — design system (foundation)
   v2 · "Editorial engineer, after dark"

   Paper and ink, one burnt-orange accent, ochre second. The
   paper carries the reading; ink panels carry the product —
   screens, diagrams, code. Depth comes from layered frames,
   soft shadows and a single warm glow, never from neon.
   Tokens mirror the Yume design system (tokens.json).
   ============================================================ */
:root{
  /* surfaces — warm paper */
  --bg:#f5f5f4;   --bg-2:#fafaf9;
  --ring-0:#ffffff; --ring-1:#f0efee; --ring-2:#e7e5e4; --ring-3:#dedbd9; --ring-4:#d6d3d1;

  /* ink */
  --fg:#201e1d; --fg-2:#44403c; --fg-3:#66605b;

  /* accent — burnt orange (text-safe on paper), ochre second */
  --accent:#d42a10; --accent-2:#57534e; --accent-deep:#a8200c;
  --brand:#ec3014;                       /* the mark's orange: fills and glows, never small text on paper */
  --accent-glow:rgba(236,48,20,.22);
  --accent-tint:rgba(212,42,16,.07); --accent-line:rgba(212,42,16,.32);
  --on-accent:#ffffff;
  --err:#b42318; --err-fg:#a11d14; --err-bg:rgba(180,35,24,.07);

  /* data hues — told apart by lightness as well as hue */
  --cyan:#1d6874; --mint:#2c7346;

  /* rules */
  --line:rgba(32,30,29,.11); --line-2:rgba(32,30,29,.2); --line-3:#8a847f;
  --glass:rgba(255,255,255,.86);

  /* ink panels — always dark, in both themes */
  --ink:#141312; --ink-2:#201e1d; --ink-3:#2a2725; --ink-4:#34302d;
  --ink-fg:#f5f5f4; --ink-fg-2:#d6d3d1; --ink-fg-3:#a8a29e;
  --ink-line:rgba(245,245,244,.1); --ink-line-2:rgba(245,245,244,.18);
  --ink-accent:#ff6a4d; --ink-ochre:#ffb199;

  --code-bg:#1c1b1a; --code-fg:#e7e5e4; --code-c:#a8a29e; --code-k:#ff8f75; --code-s:#9fd0a8;

  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  --display:"Newsreader","Iowan Old Style","Georgia",serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --r-sm:6px; --r-md:10px; --r-lg:16px; --r-xl:24px;
  --max:1200px;
  --gutter:clamp(16px,4vw,32px);
  --ease:cubic-bezier(.2,.7,.2,1);

  --sh-1:0 1px 2px rgba(32,30,29,.05), 0 6px 18px -6px rgba(32,30,29,.08);
  --sh-2:0 2px 6px rgba(32,30,29,.05), 0 24px 56px -18px rgba(32,30,29,.24);
  --sh-3:0 40px 90px -30px rgba(20,19,18,.55);
}
:root[data-theme="dark"]{
  --bg:#121110;   --bg-2:#171615;
  --ring-0:#1d1b1a; --ring-1:#232120; --ring-2:#2b2826; --ring-3:#35312e; --ring-4:#403b38;
  --fg:#f5f5f4; --fg-2:#d6d3d1; --fg-3:#a8a29e;
  --accent:#ff5a3c; --accent-2:#ffb199; --accent-deep:#ec3014;
  --accent-glow:rgba(255,90,60,.24);
  --accent-tint:rgba(255,90,60,.1); --accent-line:rgba(255,90,60,.38);
  --on-accent:#121110;
  --err:#f0706a; --err-fg:#f59a95; --err-bg:rgba(240,112,106,.1);
  --cyan:#73bcc6; --mint:#82c79b;
  --line:rgba(242,237,229,.1); --line-2:rgba(242,237,229,.2); --line-3:#7d7367;
  --glass:rgba(28,26,23,.86);
  --ink:#0d0c0a; --ink-2:#151311; --ink-3:#1f1c18; --ink-4:#2b2826;
  --code-bg:#0f0e0c;
  --sh-1:0 1px 2px rgba(0,0,0,.3), 0 6px 18px -6px rgba(0,0,0,.4);
  --sh-2:0 2px 6px rgba(0,0,0,.3), 0 24px 56px -18px rgba(0,0,0,.6);
  --sh-3:0 40px 90px -30px rgba(0,0,0,.8);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth; -webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--bg); color:var(--fg);
  font:400 16.5px/1.65 var(--sans);
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
  font-feature-settings:"ss01","cv11";
}
img,svg{max-width:100%}
img{height:auto}
.wrap{max-width:calc(var(--max) + var(--gutter)*2); margin:0 auto; padding:0 var(--gutter)}
h1,h2,h3,h4{font-family:var(--display); margin:0; line-height:1.08; letter-spacing:-.015em; font-weight:600}
a{color:inherit}
::selection{background:var(--brand); color:#fff}
:focus-visible{outline:2px solid var(--accent); outline-offset:3px; border-radius:var(--r-sm)}
.ink :focus-visible{outline-color:var(--ink-accent)}
.sr{position:absolute!important; width:1px; height:1px; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap}
.skip{position:absolute; left:12px; top:-60px; z-index:200; background:var(--fg); color:var(--bg); padding:10px 14px; border-radius:var(--r-sm); font-weight:600; text-decoration:none}
.skip:focus{top:12px}

/* ============================================================
   INK — the dark canvas used for product, hero and proof
   ============================================================ */
.ink{
  background:var(--ink); color:var(--ink-fg);
  --fg:var(--ink-fg); --fg-2:var(--ink-fg-2); --fg-3:var(--ink-fg-3);
  --line:var(--ink-line); --line-2:var(--ink-line-2); --line-3:#6f665b;
  --accent:var(--ink-accent); --accent-2:var(--ink-ochre); --accent-deep:#e06d33;
  --accent-tint:rgba(255,106,77,.1); --accent-line:rgba(255,106,77,.36);
  --ring-0:var(--ink-2); --ring-1:var(--ink-3); --ring-2:var(--ink-4);
  --bg:var(--ink); --bg-2:var(--ink-2);
  --on-accent:#16120e;
  position:relative; isolation:isolate; overflow:hidden;
}
/* the field: a fine grid that fades out, and one warm light */
.field{position:absolute; inset:0; z-index:-1; pointer-events:none; overflow:hidden}
.field::before{
  content:""; position:absolute; inset:0;
  background-image:linear-gradient(var(--ink-line) 1px,transparent 1px),linear-gradient(90deg,var(--ink-line) 1px,transparent 1px);
  background-size:64px 64px; background-position:-1px -1px;
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 70% 30%,#000 10%,transparent 75%);
          mask-image:radial-gradient(ellipse 80% 70% at 70% 30%,#000 10%,transparent 75%);
  opacity:.55;
}
.glow{position:absolute; border-radius:50%; filter:blur(70px); opacity:.55; will-change:transform}
.glow.g1{width:520px; height:520px; right:-120px; top:-160px; background:radial-gradient(circle,#ec3014 0%,rgba(236,48,20,0) 68%)}
.glow.g2{width:420px; height:420px; left:-160px; bottom:-180px; background:radial-gradient(circle,#c98a1f 0%,rgba(201,138,31,0) 70%); opacity:.35}
.glow.g3{width:300px; height:300px; left:40%; top:30%; background:radial-gradient(circle,#a8200c 0%,rgba(147,51,10,0) 70%); opacity:.45}
.grain{position:absolute; inset:0; opacity:.06; mix-blend-mode:overlay;
  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='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
@media(prefers-reduced-motion:no-preference){
  .glow.g1{animation:drift 18s ease-in-out infinite alternate}
  .glow.g2{animation:drift 22s ease-in-out infinite alternate-reverse}
}
@keyframes drift{to{transform:translate(-40px,30px) scale(1.08)}}

/* ============================================================
   HEADER
   ============================================================ */
header{
  position:sticky; top:0; z-index:90;
  background:color-mix(in srgb,var(--bg) 82%,transparent);
  backdrop-filter:saturate(1.4) blur(14px); -webkit-backdrop-filter:saturate(1.4) blur(14px);
  border-bottom:1px solid var(--line);
  transition:background-color .3s var(--ease), box-shadow .3s var(--ease);
}
header.scrolled{box-shadow:0 10px 30px -18px rgba(32,30,29,.35)}
.hd{display:flex; align-items:center; gap:16px; height:70px}
.mark{display:flex; align-items:center; gap:11px; text-decoration:none; flex:none}
.mark svg{width:32px;height:32px;border-radius:9px;display:block; box-shadow:0 6px 16px -6px rgba(236,48,20,.7)}
.mark b{font-family:var(--display); font-weight:600; font-size:23px; letter-spacing:-.015em; line-height:1}
.mark i{font-style:normal; color:var(--fg-3); font-family:var(--mono); font-size:11px; letter-spacing:.16em; text-transform:uppercase; font-weight:500}
header nav{margin-left:auto; display:flex; align-items:center; gap:2px}
header nav a{
  text-decoration:none; font-size:14.5px; font-weight:500; color:var(--fg-2);
  padding:9px 13px; border-radius:999px; position:relative;
  transition:color .2s var(--ease), background-color .2s var(--ease);
}
header nav a:hover{color:var(--fg); background:var(--ring-1)}
header nav a.on{color:var(--fg)}
header nav a.on::after{
  content:""; position:absolute; left:50%; bottom:3px; width:5px; height:5px; margin-left:-2.5px;
  border-radius:50%; background:var(--brand);
}
header nav a[data-cta]{
  margin-left:10px; background:var(--fg); color:var(--bg); padding:10px 18px; font-weight:600;
  display:inline-flex; align-items:center; gap:8px;
}
header nav a[data-cta]:hover{background:var(--brand); color:#fff}
header nav a[data-cta]::after{display:none}
.tgl{
  margin-left:6px; width:38px;height:38px; border:1px solid var(--line-2); border-radius:999px;
  background:transparent; color:var(--fg-2); cursor:pointer; display:grid; place-items:center;
  transition:color .2s var(--ease), border-color .2s var(--ease), transform .3s var(--ease);
}
.tgl:hover{color:var(--fg); border-color:var(--line-3); transform:rotate(20deg)}

.depth{height:2px; background:transparent; position:relative}
.depth i{position:absolute; inset:0 auto 0 0; width:0; background:linear-gradient(90deg,var(--brand),#ffb199)}

/* mobile header */
.menu-btn{
  display:none; margin-left:auto; width:42px; height:42px; flex:none;
  border:1px solid var(--line-2); border-radius:999px; background:transparent;
  color:var(--fg); cursor:pointer; place-items:center;
}
.menu-btn .x{display:none}
.menu-btn[aria-expanded="true"] .x{display:block}
.menu-btn[aria-expanded="true"] .bars{display:none}
.mark span{white-space:nowrap}
@media(max-width:420px){ .mark i{display:none} }
@media(max-width:980px){
  /* backdrop-filter on the header makes it the containing block for any
     position:fixed descendant, so the menu panel was resolving top/bottom
     against the 70px header instead of the viewport and collapsing to a
     strip behind the hero. The blur buys nothing on a phone. */
  header{backdrop-filter:none; -webkit-backdrop-filter:none; background:var(--bg)}
  header nav{z-index:95}
  .menu-btn{display:grid}
  header nav{
    position:fixed; left:0; right:0; top:72px; bottom:0;
    margin-left:0; flex-direction:column; align-items:stretch; gap:4px;
    background:var(--bg); padding:20px var(--gutter) 32px; overflow-y:auto;
    opacity:0; visibility:hidden; transform:translateY(-8px);
    transition:opacity .25s var(--ease), transform .25s var(--ease), visibility 0s .25s;
  }
  header nav.open{opacity:1; visibility:visible; transform:none; transition:opacity .25s var(--ease), transform .25s var(--ease)}
  header nav a{padding:15px 4px; font-size:24px; font-family:var(--display); font-weight:500; border-radius:0; border-bottom:1px solid var(--line); color:var(--fg)}
  header nav a:hover{background:transparent; color:var(--accent)}
  header nav a.on::after{left:auto; right:6px; top:50%; bottom:auto; margin:-3px 0 0}
  header nav a[data-cta]{margin:20px 0 0; justify-content:center; font-family:var(--sans); font-size:16px; border-radius:999px; padding:15px 18px; border:0}
  .tgl{margin:14px 0 0; align-self:flex-start}
  body.menu-open{overflow:hidden}
}

/* ============================================================
   REVEAL — short and quiet
   ============================================================ */
html.js .rv{opacity:0; transform:translateY(18px); transition:opacity .7s var(--ease), transform .7s var(--ease)}
html.js .rv.in{opacity:1; transform:none}
html.js .rv.d1{transition-delay:.08s} html.js .rv.d2{transition-delay:.16s} html.js .rv.d3{transition-delay:.24s}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  html.js .rv{opacity:1;transform:none;transition:none}
  *,*::before,*::after{animation:none!important; transition-duration:.01ms!important}
}

/* ============================================================
   TYPE + BUTTONS
   ============================================================ */
.tagpill{
  display:inline-flex; align-items:center; gap:10px; font-family:var(--mono);
  font-size:11.5px; font-weight:500; letter-spacing:.14em; text-transform:uppercase; color:var(--fg-2);
  padding:7px 14px 7px 12px; border:1px solid var(--line-2); border-radius:999px;
  background:color-mix(in srgb,var(--ring-0) 60%,transparent);
}
.tagpill .pulse{width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 0 var(--accent-glow);animation:pulse 2.8s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(236,48,20,.5)}70%{box-shadow:0 0 0 8px rgba(236,48,20,0)}100%{box-shadow:0 0 0 0 rgba(236,48,20,0)}}

h1 em, h2 em{font-style:italic; font-weight:500; color:var(--accent)}
.ink h1 em, .ink h2 em{
  background:linear-gradient(100deg,#ff7a5e 0%,#ec3014 45%,#ffb199 100%);
  -webkit-background-clip:text; background-clip:text; color:transparent;
  padding-right:.06em;
}
.lede{font-size:clamp(17px,1.9vw,19.5px); color:var(--fg-2); max-width:58ch; margin:26px 0 0; line-height:1.62}
.lede a{color:var(--fg); text-decoration:underline; text-decoration-color:var(--accent); text-decoration-thickness:1.5px; text-underline-offset:3px}
.lede a:hover{color:var(--accent)}

.cta{display:flex; flex-wrap:wrap; gap:12px; margin-top:34px}
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:10px; text-decoration:none; cursor:pointer;
  font-family:var(--sans); font-weight:600; font-size:15px; line-height:1; padding:15px 22px; border-radius:999px;
  border:1px solid transparent; position:relative; isolation:isolate;
  transition:background-color .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease), transform .25s var(--ease), box-shadow .25s var(--ease);
}
.btn svg{transition:transform .25s var(--ease); flex:none}
.btn:hover svg{transform:translateX(3px)}
.btn:active{transform:translateY(1px)}
.btn-p{background:var(--accent); color:var(--on-accent); box-shadow:0 10px 26px -12px rgba(212,42,16,.75)}
.btn-p:hover{background:var(--accent-deep); box-shadow:0 14px 30px -12px rgba(212,42,16,.85); transform:translateY(-1px)}
.ink .btn-p{background:linear-gradient(135deg,#ff6a4d,#ec3014 55%,#c22610); color:#fff; box-shadow:0 12px 34px -10px rgba(236,48,20,.65), inset 0 1px 0 rgba(255,255,255,.25)}
.ink .btn-p:hover{box-shadow:0 18px 44px -10px rgba(236,48,20,.8), inset 0 1px 0 rgba(255,255,255,.25)}
:root[data-theme="dark"] .btn-p{color:#16120e}
:root[data-theme="dark"] .btn-p:hover{background:#f08a55}
.btn-s{background:transparent; color:var(--fg); border-color:var(--line-3)}
.btn-s:hover{border-color:var(--fg); background:var(--ring-1); transform:translateY(-1px)}
.ink .btn-s{border-color:var(--ink-line-2); background:rgba(245,245,244,.04); backdrop-filter:blur(6px)}
.ink .btn-s:hover{border-color:rgba(245,245,244,.45); background:rgba(245,245,244,.08)}
.btn-lg{padding:18px 26px; font-size:16px}

/* ============================================================
   SECTIONS
   ============================================================ */
section{padding:112px 0; position:relative}
@media(max-width:700px){ section{padding:76px 0} }

/* ============================================================
   CODE, TABLES, NOTES
   ============================================================ */
pre{
  margin:18px 0 0; padding:18px 20px; border-radius:var(--r-md); overflow-x:auto;
  background:var(--code-bg); border:1px solid var(--line-2);
  font-family:var(--mono); font-size:13px; line-height:1.7; color:var(--code-fg);
}
pre .c{color:var(--code-c)} pre .k{color:var(--code-k)} pre .s{color:var(--code-s)}
.note{
  margin-top:28px; padding:18px 22px; border-radius:var(--r-lg);
  border:1px solid var(--line); background:var(--bg-2);
  font-size:15px; color:var(--fg-2);
}
.note b{color:var(--fg); font-weight:600}

/* ============================================================
   FORMS
   ============================================================ */
#lead-form label, .full{display:block; font-size:13.5px; font-weight:600; color:var(--fg)}
.full{margin-top:16px}
.req{font-family:var(--mono); font-size:10.5px; font-weight:500; color:var(--accent); margin-left:6px; text-transform:lowercase; letter-spacing:.04em}
#lead-form input, #lead-form select, #lead-form textarea{
  display:block; width:100%; margin-top:8px; font:400 15.5px var(--sans); color:var(--fg);
  background:var(--bg-2); border:1px solid var(--line-2); border-radius:var(--r-md);
  padding:13px 15px; transition:border-color .2s var(--ease), box-shadow .2s var(--ease), background-color .2s var(--ease);
}
#lead-form input:hover, #lead-form select:hover, #lead-form textarea:hover{border-color:var(--line-3)}
#lead-form input::placeholder, #lead-form textarea::placeholder{color:var(--fg-3)}
#lead-form textarea{resize:vertical; min-height:130px}
#lead-form input:focus, #lead-form select:focus, #lead-form textarea:focus{
  outline:none; border-color:var(--accent); background:var(--ring-0); box-shadow:0 0 0 4px var(--accent-tint);
}
#lead-form input[aria-invalid="true"]{border-color:var(--err); box-shadow:0 0 0 4px var(--err-bg)}
#lead-form select{appearance:none; cursor:pointer;
  background-image:linear-gradient(45deg,transparent 50%,var(--fg-2) 50%),linear-gradient(135deg,var(--fg-2) 50%,transparent 50%);
  background-position:calc(100% - 20px) 52%, calc(100% - 15px) 52%; background-size:5px 5px; background-repeat:no-repeat; padding-right:38px}
#lead-form button[disabled]{opacity:.65; cursor:progress}
.frow{display:flex; align-items:center; gap:16px; flex-wrap:wrap; margin-top:22px}
.fstat{margin:0; font-size:14px; color:var(--fg-2); min-height:1.3em; flex:1; min-width:200px}
.fstat a{color:var(--accent); font-weight:600}

/* ============================================================
   FOOTER
   ============================================================ */
footer{padding:84px 0 36px; font-size:14.5px}
.ft{display:grid; grid-template-columns:1.5fr repeat(3,1fr); gap:40px}
@media(max-width:900px){ .ft{grid-template-columns:1fr 1fr; gap:36px 24px} .ft .ft-brand{grid-column:1/-1} }
@media(max-width:480px){ .ft{grid-template-columns:1fr} }
.ft-brand p{color:var(--ink-fg-2); margin:18px 0 0; max-width:36ch; line-height:1.65}
.ft-brand .mark b{color:var(--ink-fg)}
.ft h4{font-family:var(--mono); font-size:11px; font-weight:500; letter-spacing:.18em; text-transform:uppercase; color:var(--ink-fg-3); margin:4px 0 16px}
.ft ul{list-style:none; margin:0; padding:0; display:grid; gap:10px}
.ft a{color:var(--ink-fg-2); text-decoration:none; transition:color .2s var(--ease)}
.ft a:hover{color:var(--ink-accent)}
.ft-loc{display:inline-flex; align-items:center; gap:8px; margin-top:20px; font-family:var(--mono); font-size:12px; color:var(--ink-fg-3); letter-spacing:.06em}
.ft-loc i{width:7px; height:7px; border-radius:50%; background:#5fbf7f; box-shadow:0 0 0 4px rgba(95,191,127,.15)}
.ft-word{
  font-family:var(--display); font-weight:500; letter-spacing:-.04em; line-height:1.05;
  font-size:clamp(46px,13vw,186px); margin:56px 0 -.12em; white-space:nowrap; overflow:hidden; user-select:none;
  background:linear-gradient(180deg,rgba(245,245,244,.14),rgba(245,245,244,0) 85%);
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.ft-legal{display:flex; flex-wrap:wrap; gap:10px 24px; justify-content:space-between; border-top:1px solid var(--ink-line); padding-top:24px; margin-top:8px; color:var(--ink-fg-3); font-size:13px}
.ft-legal p{margin:0; max-width:70ch}