/* ============================================================
   R2 Digital LLC - Enterprise Ontology LLM
   Theme: light bluish grey / dark navy / action #d62606
   ============================================================ */

:root{
  --bg:#e8edf5;
  --bg-soft:#f2f6fb;
  --surface:#ffffff;
  --surface-2:#f7f9fd;
  --navy:#0a1f3d;
  --navy-2:#13315c;
  --navy-3:#2b4a75;
  --ink:#0a1f3d;
  --muted:#5c749a;
  --line:#ccd8e9;
  --line-soft:#dfe7f2;
  --action:#d62606;
  --action-2:#b01f04;
  --action-soft:#fdeeea;
  --ok:#0f7b5f;
  --warn:#a86b00;

  --radius:14px;
  --radius-sm:9px;
  --radius-lg:22px;
  --shadow-sm:0 1px 2px rgba(10,31,61,.06), 0 2px 8px rgba(10,31,61,.05);
  --shadow:0 2px 6px rgba(10,31,61,.07), 0 12px 32px rgba(10,31,61,.09);
  --shadow-lg:0 6px 18px rgba(10,31,61,.10), 0 28px 64px rgba(10,31,61,.14);

  --font:"Inter","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;

  --nav-h:66px;
  --maxw:1180px;
  --ease:cubic-bezier(.22,.61,.36,1);
  color-scheme:light;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 18px);-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
}

body{
  margin:0;
  font-family:var(--font);
  background:var(--bg);
  color:var(--ink);
  font-size:16.5px;
  line-height:1.62;
  letter-spacing:-.006em;
  overflow-x:hidden;
  overflow-x:clip; /* clip does not create a scroll container, so smooth scrolling keeps working */
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden}

h1,h2,h3,h4{color:var(--navy);line-height:1.15;letter-spacing:-.025em;margin:0 0 .5em;font-weight:700}
h1{font-size:clamp(2.1rem,5.2vw,3.5rem);letter-spacing:-.035em}
h2{font-size:clamp(1.6rem,3.4vw,2.35rem)}
h3{font-size:clamp(1.12rem,1.9vw,1.35rem)}
h4{font-size:1rem;letter-spacing:-.01em}
p{margin:0 0 1em}
a{color:var(--action);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--action-2);text-decoration:underline;text-underline-offset:3px}
ul,ol{margin:0 0 1em;padding-left:1.15em}
li{margin-bottom:.4em}
strong{color:var(--navy);font-weight:650}
code{font-family:var(--mono);font-size:.86em;background:var(--surface-2);border:1px solid var(--line-soft);border-radius:5px;padding:.1em .4em;color:var(--navy-2)}
img,svg{max-width:100%}
:focus-visible{outline:3px solid var(--action);outline-offset:3px;border-radius:4px}

.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px}
.lede{font-size:1.1rem;color:var(--navy-3);max-width:72ch}
.muted{color:var(--muted)}
.center{text-align:center}
.mb0{margin-bottom:0}
.skip{position:absolute;left:-9999px;top:0;background:var(--action);color:#fff;padding:10px 16px;border-radius:0 0 8px 0;z-index:400;font-weight:650}
.skip:focus{left:0;text-decoration:none;color:#fff}

/* ---------- reading progress ---------- */
#progress{position:fixed;top:0;left:0;height:3px;width:100%;z-index:120;background:transparent;pointer-events:none}
#progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--action),#ff6a3d);transition:width .1s linear}

/* ---------- top bar ---------- */
.topbar{
  position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:110;
  background:rgba(232,237,245,.82);
  backdrop-filter:saturate(150%) blur(14px);
  -webkit-backdrop-filter:saturate(150%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .25s var(--ease),background .25s var(--ease),box-shadow .25s var(--ease);
}
.topbar.scrolled{border-bottom-color:var(--line);background:rgba(238,242,249,.93);box-shadow:0 6px 24px rgba(10,31,61,.07)}
.topbar .wrap{height:100%;display:flex;align-items:center;gap:18px}

.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{width:36px;height:36px;flex-shrink:0;border-radius:8px;display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-name{font-weight:750;font-size:.98rem;color:var(--navy);letter-spacing:-.02em}
.brand-sub{font-size:.63rem;letter-spacing:.13em;text-transform:uppercase;color:var(--muted);font-weight:600}

.navlinks{display:flex;gap:2px;margin-left:auto;align-items:center}
.navlinks a{
  color:var(--navy-2);font-size:.83rem;font-weight:560;padding:8px 9px;border-radius:8px;
  position:relative;transition:color .18s var(--ease),background .18s var(--ease);white-space:nowrap;
}
.navlinks a::after{
  content:"";position:absolute;left:9px;right:9px;bottom:3px;height:2px;border-radius:2px;
  background:var(--action);transform:scaleX(0);transform-origin:left;transition:transform .28s var(--ease);
}
.navlinks a:hover{color:var(--navy);background:rgba(19,49,92,.055);text-decoration:none}
.navlinks a.active{color:var(--navy)}
.navlinks a.active::after{transform:scaleX(1)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--action);color:#fff;font-weight:640;font-size:.9rem;
  padding:11px 20px;border-radius:10px;border:1px solid var(--action);cursor:pointer;
  font-family:var(--font);letter-spacing:-.01em;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
  box-shadow:0 2px 10px rgba(214,38,6,.26);
}
.btn:hover{background:var(--action-2);border-color:var(--action-2);color:#fff;text-decoration:none;transform:translateY(-2px);box-shadow:0 8px 22px rgba(214,38,6,.32)}
.btn:active{transform:translateY(0)}
.btn-sm{padding:8px 15px;font-size:.83rem;border-radius:9px}
.btn-ghost{background:transparent;color:var(--navy);border:1px solid var(--line);box-shadow:none}
.btn-ghost:hover{background:var(--surface);color:var(--navy);border-color:var(--navy-3);box-shadow:var(--shadow-sm)}
.btn-nav{margin-left:10px}

.icon-btn{
  display:none;background:transparent;border:1px solid var(--line);border-radius:9px;
  width:40px;height:40px;align-items:center;justify-content:center;cursor:pointer;color:var(--navy);
  transition:background .18s var(--ease),border-color .18s var(--ease);
}
.icon-btn:hover{background:var(--surface);border-color:var(--navy-3)}
.kbd-hint{
  display:flex;align-items:center;gap:6px;margin-left:8px;padding:6px 10px;border-radius:8px;
  border:1px solid var(--line);background:var(--surface-2);color:var(--muted);
  font-size:.72rem;font-weight:600;cursor:pointer;transition:all .18s var(--ease);font-family:var(--font);
}
.kbd-hint:hover{border-color:var(--navy-3);color:var(--navy)}
kbd{font-family:var(--mono);font-size:.68rem;background:var(--surface);border:1px solid var(--line);border-bottom-width:2px;border-radius:4px;padding:1px 4px;color:var(--navy-2)}

/* ---------- mobile drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:109;background:var(--bg);
  transform:translateY(-100%);transition:transform .42s var(--ease);
  padding:calc(var(--nav-h) + 24px) 22px 40px;overflow-y:auto;
}
.drawer.open{transform:translateY(0)}
.drawer a{
  display:flex;align-items:center;gap:14px;padding:15px 4px;border-bottom:1px solid var(--line-soft);
  color:var(--navy);font-size:1.06rem;font-weight:600;text-decoration:none;
  opacity:0;transform:translateY(14px);
}
.drawer.open a{animation:drawerIn .42s var(--ease) forwards}
.drawer a .n{font-family:var(--mono);font-size:.72rem;color:var(--action);font-weight:700;min-width:24px}
.drawer .btn{width:100%;margin-top:22px;padding:14px}
@keyframes drawerIn{to{opacity:1;transform:translateY(0)}}

/* ---------- section rail (desktop) ---------- */
.rail{position:fixed;left:20px;top:50%;transform:translateY(-50%);z-index:60;display:none;flex-direction:column;gap:11px}
.rail button{
  width:9px;height:9px;border-radius:50%;border:0;padding:0;cursor:pointer;position:relative;
  background:var(--line);transition:all .3s var(--ease);
}
.rail button::after{
  content:attr(data-label);position:absolute;left:20px;top:50%;transform:translateY(-50%) translateX(-6px);
  background:var(--navy);color:#fff;font-size:.7rem;font-weight:600;padding:5px 10px;border-radius:6px;
  white-space:nowrap;opacity:0;pointer-events:none;transition:all .25s var(--ease);
}
.rail button:hover::after{opacity:1;transform:translateY(-50%) translateX(0)}
.rail button:hover{background:var(--navy-3);transform:scale(1.3)}
.rail button.active{background:var(--action);height:26px;border-radius:5px}
@media(min-width:1400px){.rail{display:flex}}

/* ---------- command palette ---------- */
.palette-bg{position:fixed;inset:0;z-index:200;background:rgba(10,31,61,.42);backdrop-filter:blur(4px);
  opacity:0;pointer-events:none;transition:opacity .22s var(--ease);display:flex;align-items:flex-start;justify-content:center;padding:12vh 20px 20px}
.palette-bg.open{opacity:1;pointer-events:auto}
.palette{
  width:100%;max-width:560px;background:var(--surface);border-radius:var(--radius);border:1px solid var(--line);
  box-shadow:var(--shadow-lg);overflow:hidden;transform:translateY(-14px) scale(.98);transition:transform .26s var(--ease);
}
.palette-bg.open .palette{transform:translateY(0) scale(1)}
.palette input{
  width:100%;border:0;border-bottom:1px solid var(--line-soft);padding:17px 20px;font-size:1rem;
  font-family:var(--font);color:var(--navy);background:transparent;outline:0;
}
.palette input::placeholder{color:var(--muted)}
.palette-list{max-height:340px;overflow-y:auto;padding:7px}
.palette-list button{
  display:flex;width:100%;align-items:center;gap:12px;background:transparent;border:0;cursor:pointer;
  padding:11px 13px;border-radius:9px;text-align:left;font-family:var(--font);font-size:.92rem;
  color:var(--navy);font-weight:560;transition:background .14s var(--ease);
}
.palette-list button .n{font-family:var(--mono);font-size:.7rem;color:var(--action);font-weight:700;min-width:22px}
.palette-list button .d{font-size:.78rem;color:var(--muted);font-weight:450;margin-left:auto;text-align:right}
.palette-list button:hover,.palette-list button.sel{background:var(--surface-2)}
.palette-list button.sel{box-shadow:inset 3px 0 0 var(--action)}
.palette-empty{padding:26px;text-align:center;color:var(--muted);font-size:.88rem}

/* ---------- hero ---------- */
.hero{position:relative;padding:calc(var(--nav-h) + 66px) 0 66px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:52px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-size:.72rem;font-weight:700;letter-spacing:.12em;
  text-transform:uppercase;color:var(--action);background:var(--action-soft);border:1px solid rgba(214,38,6,.2);
  padding:6px 13px;border-radius:100px;margin-bottom:20px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--action);animation:pulse 2.4s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.7)}}
.hero h1 .accent{color:var(--action)}
.byline{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:26px 0 30px;font-size:.87rem;color:var(--muted)}
.byline .author{display:flex;align-items:center;gap:9px;font-weight:650;color:var(--navy);text-decoration:none}
.byline .author:hover{color:var(--action);text-decoration:none}
.byline .avatar{width:30px;height:30px;border-radius:50%;background:linear-gradient(135deg,var(--navy-2),var(--navy));
  color:#fff;display:grid;place-items:center;font-size:.72rem;font-weight:700;letter-spacing:-.02em}
.byline .sep{width:4px;height:4px;border-radius:50%;background:var(--line)}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:30px}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;max-width:520px}
.stat{background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--radius-sm);padding:14px 15px}
.stat b{display:block;font-size:1.5rem;color:var(--action);letter-spacing:-.03em;line-height:1.1;font-weight:750}
.stat span{font-size:.735rem;color:var(--muted);line-height:1.35;display:block;margin-top:3px}

.hero-art{width:100%;min-width:0}
.hero-art svg{display:block;width:100%;height:auto}
.hero-bg{position:absolute;inset:0;z-index:-1;pointer-events:none;opacity:.5}
.hero-bg .glow{position:absolute;border-radius:50%;filter:blur(90px)}
.hero-bg .g1{width:460px;height:460px;background:rgba(43,74,117,.20);top:-140px;right:-90px}
.hero-bg .g2{width:340px;height:340px;background:rgba(214,38,6,.11);bottom:-120px;left:-60px}

/* ---------- sections ---------- */
section[id]{padding:74px 0;position:relative;scroll-margin-top:calc(var(--nav-h) + 12px)}
section.alt{background:var(--bg-soft);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.sec-head{max-width:78ch;margin-bottom:38px}
.sec-num{
  font-family:var(--mono);font-size:.74rem;font-weight:700;color:var(--action);letter-spacing:.16em;
  display:flex;align-items:center;gap:11px;margin-bottom:13px;text-transform:uppercase;
}
.sec-num::after{content:"";height:1px;flex:1;max-width:70px;background:linear-gradient(90deg,var(--action),transparent)}

/* ---------- reveal ---------- */
.rv{opacity:0;transform:translateY(22px);transition:opacity .62s var(--ease),transform .62s var(--ease)}
.rv.in{opacity:1;transform:none}
.rv-d1{transition-delay:.07s}.rv-d2{transition-delay:.14s}.rv-d3{transition-delay:.21s}
.rv-d4{transition-delay:.28s}.rv-d5{transition-delay:.35s}.rv-d6{transition-delay:.42s}

/* ---------- cards ---------- */
.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

.card{
  background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--radius);padding:22px;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
  position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line)}
.card h3{margin-bottom:.45em}
.card p:last-child,.card ul:last-child{margin-bottom:0}
.card .ico{
  width:40px;height:40px;border-radius:10px;background:var(--surface-2);border:1px solid var(--line-soft);
  display:grid;place-items:center;margin-bottom:15px;color:var(--navy-2);
}
.card.accent::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--action)}
.card.accent{padding-left:25px}
.card ul{font-size:.9rem;color:var(--navy-3)}
.grid .span-all{grid-column:1/-1}
ul.cols2{columns:2;column-gap:30px}
ul.cols2 li{break-inside:avoid}
.tag{
  display:inline-block;font-size:.68rem;font-weight:700;letter-spacing:.07em;text-transform:uppercase;
  padding:3px 9px;border-radius:100px;background:var(--surface-2);color:var(--navy-3);border:1px solid var(--line-soft);
}
.tag.red{background:var(--action-soft);color:var(--action-2);border-color:rgba(214,38,6,.2)}
.tag.green{background:#e8f5f0;color:var(--ok);border-color:#c3e4d8}
.tag.amber{background:#fdf3e0;color:var(--warn);border-color:#f0dcb4}

.pullquote{
  border-left:3px solid var(--action);padding:4px 0 4px 20px;margin:26px 0;
  font-size:1.16rem;color:var(--navy-2);font-weight:520;line-height:1.5;letter-spacing:-.015em;
}
.pullquote cite{display:block;font-size:.8rem;color:var(--muted);font-style:normal;font-weight:600;margin-top:9px}

.callout{
  background:var(--surface);border:1px solid var(--line-soft);border-left:3px solid var(--action);
  border-radius:var(--radius-sm);padding:18px 20px;margin:22px 0;
}
.callout h4{color:var(--action-2);font-size:.76rem;letter-spacing:.1em;text-transform:uppercase;margin-bottom:8px}
.callout p:last-child{margin-bottom:0}

/* ---------- Q&A ---------- */
.qa{border-top:1px solid var(--line);margin-top:8px}
.qa-item{border-bottom:1px solid var(--line)}
.qa-q{
  width:100%;background:transparent;border:0;cursor:pointer;font-family:var(--font);
  display:flex;align-items:flex-start;gap:15px;padding:19px 4px;text-align:left;
  font-size:1.04rem;font-weight:620;color:var(--navy);letter-spacing:-.015em;line-height:1.4;
  transition:color .18s var(--ease);
}
.qa-q:hover{color:var(--action)}
.qa-q .chev{margin-left:auto;flex-shrink:0;transition:transform .3s var(--ease);color:var(--action);margin-top:3px}
.qa-item.open .qa-q .chev{transform:rotate(180deg)}
.qa-q .qmark{font-family:var(--mono);font-size:.78rem;color:var(--action);font-weight:700;margin-top:4px;flex-shrink:0}
.qa-a{max-height:0;overflow:hidden;transition:max-height .42s var(--ease)}
.qa-a-inner{padding:0 4px 22px 42px;color:var(--navy-3)}
.qa-a-inner p:last-child,.qa-a-inner ul:last-child{margin-bottom:0}

/* ---------- table ---------- */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);-webkit-overflow-scrolling:touch}
table{width:100%;border-collapse:collapse;font-size:.9rem;min-width:640px}
thead th{
  background:var(--navy);color:#fff;text-align:left;padding:13px 15px;font-weight:640;font-size:.78rem;
  letter-spacing:.05em;text-transform:uppercase;white-space:nowrap;
}
tbody td{padding:13px 15px;border-top:1px solid var(--line-soft);vertical-align:top;color:var(--navy-3)}
tbody tr:nth-child(even){background:var(--surface-2)}
tbody td:first-child{font-weight:640;color:var(--navy)}

/* ---------- tabs ---------- */
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:22px;padding:5px;background:var(--surface);
  border:1px solid var(--line-soft);border-radius:12px;width:fit-content;max-width:100%}
.tabs button{
  background:transparent;border:0;cursor:pointer;font-family:var(--font);font-size:.87rem;font-weight:600;
  color:var(--navy-3);padding:9px 16px;border-radius:9px;transition:all .24s var(--ease);white-space:nowrap;
}
.tabs button:hover{color:var(--navy);background:var(--surface-2)}
.tabs button.active{background:var(--navy);color:#fff}
.tab-panel{display:none;animation:fadeUp .42s var(--ease)}
.tab-panel.active{display:block}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* ---------- diagram frame ---------- */
.fig{
  background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--radius-lg);
  padding:24px;margin:26px 0;box-shadow:var(--shadow-sm);
}
.fig-cap{display:flex;gap:10px;align-items:baseline;margin-top:16px;padding-top:14px;border-top:1px solid var(--line-soft);
  font-size:.8rem;color:var(--muted);line-height:1.5}
.fig-cap b{color:var(--navy);font-weight:700;white-space:nowrap;font-size:.75rem;letter-spacing:.06em;text-transform:uppercase}
.fig svg{display:block;width:100%;height:auto}
.fig-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.fig-scroll svg{min-width:600px}

/* svg animation helpers */
.flow-dash{stroke-dasharray:5 5;animation:dash 1.1s linear infinite}
@keyframes dash{to{stroke-dashoffset:-20}}
.pulse-node{animation:nodePulse 3s ease-in-out infinite}
@keyframes nodePulse{0%,100%{opacity:.35}50%{opacity:1}}
.float-y{animation:floaty 5s ease-in-out infinite}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-5px)}}
.svg-label{font-family:var(--font);font-size:11px;font-weight:600;fill:#0a1f3d}
.svg-sub{font-family:var(--font);font-size:9.5px;font-weight:500;fill:#5c749a}
.svg-title{font-family:var(--font);font-size:12.5px;font-weight:700;fill:#0a1f3d}
.svg-mono{font-family:var(--mono);font-size:9px;font-weight:700;fill:#d62606;letter-spacing:.08em}
.svg-white{fill:#fff}

/* ---------- domain chips ---------- */
.chips{display:grid;grid-template-columns:repeat(auto-fill,minmax(215px,1fr));gap:11px}
.chip{
  background:var(--surface);border:1px solid var(--line-soft);border-radius:11px;padding:13px 15px;
  display:flex;gap:11px;align-items:flex-start;transition:all .26s var(--ease);
}
.chip:hover{border-color:var(--action);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.chip .cn{font-family:var(--mono);font-size:.66rem;font-weight:700;color:var(--action);padding-top:3px}
.chip b{display:block;font-size:.87rem;color:var(--navy);font-weight:640;letter-spacing:-.01em}
.chip span{display:block;font-size:.75rem;color:var(--muted);line-height:1.4;margin-top:2px}

/* ---------- steps ---------- */
.steps{position:relative;padding-left:34px}
.steps::before{content:"";position:absolute;left:11px;top:8px;bottom:8px;width:2px;background:var(--line)}
.step{position:relative;padding-bottom:26px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:-28px;top:6px;width:12px;height:12px;border-radius:50%;
  background:var(--surface);border:2px solid var(--action);z-index:1;
}
.step h4{color:var(--navy);margin-bottom:5px;font-size:1.02rem}
.step p{margin-bottom:0;font-size:.93rem;color:var(--navy-3)}
.step .st{font-family:var(--mono);font-size:.68rem;color:var(--action);font-weight:700;letter-spacing:.1em;text-transform:uppercase}

/* ---------- use case cards ---------- */
.uc{background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--radius);overflow:hidden;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);display:flex;flex-direction:column}
.uc:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.uc-head{padding:18px 20px;border-bottom:1px solid var(--line-soft);display:flex;align-items:center;gap:13px;background:var(--surface-2)}
.uc-head .ico{width:38px;height:38px;border-radius:9px;background:var(--navy);display:grid;place-items:center;color:#fff;flex-shrink:0}
.uc-head h3{margin:0;font-size:1.04rem}
.uc-head span{font-size:.73rem;color:var(--muted);display:block;font-weight:550}
.uc-body{padding:19px 20px;flex:1}
.uc-body p{font-size:.92rem;color:var(--navy-3)}
.uc-body p:last-child{margin-bottom:0}
.uc-body .qa-mini{font-size:.9rem}
.uc-body .qa-mini b{display:block;color:var(--navy);margin-bottom:2px;font-size:.82rem;letter-spacing:-.005em}
.uc-body .qa-mini p{margin-bottom:14px}
.uc-metrics{display:flex;gap:18px;flex-wrap:wrap;padding:14px 20px;background:var(--surface-2);border-top:1px solid var(--line-soft)}
.uc-metrics div b{display:block;color:var(--action);font-size:1.12rem;font-weight:750;letter-spacing:-.02em}
.uc-metrics div span{font-size:.7rem;color:var(--muted)}

/* ---------- contact ---------- */
.contact-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:36px;align-items:start}
.form-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow)}
.field{margin-bottom:17px}
.field label{display:block;font-size:.8rem;font-weight:650;color:var(--navy);margin-bottom:6px;letter-spacing:-.005em}
.field label .req{color:var(--action)}
.field input,.field textarea,.field select{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;background:var(--surface-2);
  font-family:var(--font);font-size:.94rem;color:var(--navy);transition:all .2s var(--ease);
}
.field textarea{resize:vertical;min-height:132px;line-height:1.55}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:0;border-color:var(--action);background:var(--surface);box-shadow:0 0 0 3px rgba(214,38,6,.11);
}
.field .help{display:flex;justify-content:space-between;gap:10px;font-size:.74rem;color:var(--muted);margin-top:5px}
.field .help .over{color:var(--action);font-weight:700}
.field .err{font-size:.76rem;color:var(--action);font-weight:600;margin-top:5px;display:none}
.field.invalid input,.field.invalid textarea{border-color:var(--action);background:var(--action-soft)}
.field.invalid .err{display:block}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-note{font-size:.78rem;color:var(--muted);margin-top:14px;line-height:1.5}
.form-status{
  display:none;margin-top:15px;padding:13px 15px;border-radius:10px;font-size:.87rem;font-weight:560;
  background:#e8f5f0;border:1px solid #c3e4d8;color:var(--ok);
}
.form-status.show{display:block;animation:fadeUp .34s var(--ease)}
.contact-points{list-style:none;padding:0}
.contact-points li{display:flex;gap:12px;align-items:flex-start;margin-bottom:15px;font-size:.94rem;color:var(--navy-3)}
.contact-points li svg{flex-shrink:0;color:var(--action);margin-top:3px}

/* ---------- contact modal ---------- */
.modal-bg{
  position:fixed;inset:0;z-index:210;background:rgba(10,31,61,.55);
  backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px);
  opacity:0;pointer-events:none;transition:opacity .26s var(--ease);
  display:flex;align-items:flex-start;justify-content:center;padding:5vh 18px 24px;overflow-y:auto;
}
.modal-bg.open{opacity:1;pointer-events:auto}
.modal{
  position:relative;width:100%;max-width:530px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);
  padding:30px;transform:translateY(-16px) scale(.97);transition:transform .3s var(--ease);
  margin:auto 0;
}
.modal-bg.open .modal{transform:translateY(0) scale(1)}
.modal-x{
  position:absolute;top:14px;right:14px;width:34px;height:34px;border-radius:9px;
  background:var(--surface-2);border:1px solid var(--line-soft);color:var(--navy-3);
  display:grid;place-items:center;cursor:pointer;transition:all .18s var(--ease);
}
.modal-x:hover{background:var(--action-soft);border-color:var(--action);color:var(--action)}
.modal-head{margin-bottom:22px;padding-right:34px}
.modal-head h3{margin-bottom:6px}
.modal-head p{font-size:.9rem;color:var(--muted);margin-bottom:0}

#contactSubmit{position:relative}
#contactSubmit .spinner{
  display:none;width:15px;height:15px;border-radius:50%;
  border:2px solid rgba(255,255,255,.35);border-top-color:#fff;animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
#contactSubmit.sending{pointer-events:none;opacity:.85}
#contactSubmit.sending .btn-arrow{display:none}
#contactSubmit.sending .spinner{display:block}
.form-status.error{background:var(--action-soft);border-color:rgba(214,38,6,.28);color:var(--action-2)}

/* success toast */
.toast.success{background:#0d5c47;padding:15px 22px}
.toast.success svg{flex-shrink:0}

/* ---------- references ---------- */
.refs{display:grid;grid-template-columns:repeat(2,1fr);gap:9px}
.ref{
  display:flex;gap:12px;align-items:flex-start;padding:13px 15px;background:var(--surface);
  border:1px solid var(--line-soft);border-radius:10px;font-size:.855rem;line-height:1.45;
  transition:all .24s var(--ease);color:var(--navy-3);text-decoration:none;
}
.ref:hover{border-color:var(--action);transform:translateX(3px);text-decoration:none;color:var(--navy-3);box-shadow:var(--shadow-sm)}
.ref .rn{font-family:var(--mono);font-size:.68rem;color:var(--action);font-weight:700;padding-top:2px;flex-shrink:0}
.ref b{display:block;color:var(--navy);font-weight:640;margin-bottom:2px}
.ref span{color:var(--muted);font-size:.76rem;word-break:break-word}

.blogs{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.blog-card{
  display:block;background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--radius);
  padding:20px;text-decoration:none;transition:all .28s var(--ease);position:relative;overflow:hidden;
}
.blog-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line);text-decoration:none}
.blog-card .k{font-family:var(--mono);font-size:.66rem;letter-spacing:.1em;text-transform:uppercase;color:var(--action);font-weight:700}
.blog-card h4{margin:9px 0 6px;color:var(--navy);font-size:1rem;padding-right:22px}
.blog-card p{font-size:.83rem;color:var(--muted);margin:0;line-height:1.5}
.blog-card .arrow{position:absolute;top:18px;right:18px;color:var(--line);transition:all .28s var(--ease)}
.blog-card:hover .arrow{color:var(--action);transform:translate(3px,-3px)}

/* ---------- footer ---------- */
footer{background:var(--navy);color:#c3d2e6;padding:52px 0 26px}
footer h4{color:#fff;font-size:.76rem;letter-spacing:.12em;text-transform:uppercase;margin-bottom:14px}
footer a{color:#c3d2e6;font-size:.87rem;display:block;margin-bottom:9px;transition:color .18s var(--ease)}
footer a:hover{color:#fff;text-decoration:none}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;margin-bottom:36px}
.footer-brand .brand-name{color:#fff}
.footer-brand .brand-sub{color:#7d97b8}
.footer-logo{width:132px;height:auto;border-radius:9px;display:block}
.footer-brand p{font-size:.87rem;color:#a8bcd6;margin-top:16px;max-width:34ch}
.footer-bot{border-top:1px solid rgba(255,255,255,.11);padding-top:20px;display:flex;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:.79rem;color:#8fa8c6}

/* ---------- toast / install ---------- */
.toast{
  position:fixed;left:50%;bottom:24px;transform:translate(-50%,150%);z-index:300;
  background:var(--navy);color:#fff;padding:13px 20px;border-radius:11px;box-shadow:var(--shadow-lg);
  font-size:.88rem;font-weight:550;display:flex;align-items:center;gap:12px;transition:transform .4s var(--ease);
  max-width:calc(100vw - 32px);
}
.toast.show{transform:translate(-50%,0)}
.toast button{background:var(--action);border:0;color:#fff;font-family:var(--font);font-weight:640;font-size:.8rem;
  padding:6px 13px;border-radius:7px;cursor:pointer;white-space:nowrap}
.toast .x{background:transparent;color:#8fa8c6;padding:4px 6px;font-size:1rem}

.totop{
  position:fixed;right:22px;bottom:22px;z-index:90;width:44px;height:44px;border-radius:12px;
  background:var(--navy);color:#fff;border:0;cursor:pointer;display:grid;place-items:center;
  box-shadow:var(--shadow);opacity:0;pointer-events:none;transform:translateY(12px);
  transition:all .3s var(--ease);
}
.totop.show{opacity:1;pointer-events:auto;transform:none}
.totop:hover{background:var(--action)}

/* ---------- responsive ---------- */
@media(max-width:1080px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-art{width:100%;max-width:560px;margin:0 auto}
  .g4{grid-template-columns:repeat(2,1fr)}
  .contact-wrap{grid-template-columns:1fr;gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
}
@media(max-width:1024px){
  .navlinks,.kbd-hint,.btn-nav{display:none}
  .icon-btn{display:flex}
  .g3,.blogs{grid-template-columns:1fr 1fr}
  .refs{grid-template-columns:1fr}
}
@media(max-width:680px){
  body{font-size:16px}
  section[id]{padding:54px 0}
  .hero{padding:calc(var(--nav-h) + 40px) 0 46px}
  .g2,.g3,.g4,.blogs{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:1fr;max-width:none}
  .stat{display:flex;align-items:baseline;gap:10px}
  .stat b{font-size:1.25rem}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .fig{padding:15px;border-radius:var(--radius)}
  .form-card{padding:20px}
  .modal{padding:22px;border-radius:var(--radius)}
  .modal-bg{padding:14px}
  .qa-a-inner{padding-left:4px}
  .brand-sub{display:none}
  .totop{right:14px;bottom:14px}
  .pullquote{font-size:1.05rem}
  ul.cols2{columns:1}
}
@media print{
  .topbar,.rail,.totop,.toast,.drawer,.palette-bg,.modal-bg,#progress{display:none!important}
  body{background:#fff}
  .rv{opacity:1;transform:none}
  .qa-a{max-height:none!important}
}