/* ==========================================================================
   Bellbird Labs — bellbirdlabs.in
   Design system + site styles. Plain CSS, no build step.
   Sections: 1 tokens · 2 base · 3 layout · 4 nav · 5 buttons/chips
             6 cards/panels · 7 hero · 8 components · 9 forms
             10 footer · 11 utilities · 12 motion · 13 responsive
   ========================================================================== */

/* ---------- 1. Tokens ---------- */
:root{
  --ink:#0A0E18;
  --ink-2:#0D1320;
  --ink-3:#111A2A;
  --panel:#111B2E;
  --panel-2:#16223A;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);

  --text:#E6ECF7;
  --text-2:#C6D1E4;
  --muted:#9BAAC6;

  --blue:#1F63C8;
  --blue-2:#4C8CF0;
  --blue-dim:rgba(76,140,240,.14);

  --flame-1:#FFA43A;
  --flame-2:#F4546F;
  --flame-3:#DE349B;
  --grad:linear-gradient(104deg,var(--flame-1) 0%,var(--flame-2) 52%,var(--flame-3) 100%);
  --grad-soft:linear-gradient(104deg,rgba(255,164,58,.16),rgba(222,52,155,.16));

  --ok:#3BC489;
  --warn:#F0B544;
  --alert:#FF5F6D;

  --paper:#F3F6FC;
  --paper-2:#FFFFFF;
  --paper-ink:#0B1220;
  --paper-muted:#51607C;
  --paper-line:#DCE3F0;

  --r-sm:8px;
  --r:14px;
  --r-lg:22px;
  --r-pill:999px;

  --shadow:0 24px 60px -24px rgba(0,0,0,.65);
  --shadow-soft:0 14px 40px -22px rgba(0,0,0,.5);

  --wrap:1200px;
  --gut:clamp(18px,4vw,40px);
  --sp-section:clamp(68px,9vw,128px);

  --ff-head:"Space Grotesk","Segoe UI",system-ui,-apple-system,sans-serif;
  --ff-body:"Inter","Segoe UI",system-ui,-apple-system,sans-serif;
  --ff-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}

/* ---------- 2. Base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink);
  color:var(--text);
  font-family:var(--ff-body);
  font-size:17px;
  line-height:1.72;
  letter-spacing:-.005em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden}

h1,h2,h3,h4,h5{font-family:var(--ff-head);font-weight:600;line-height:1.14;letter-spacing:-.025em;margin:0 0 .5em}
h1{font-size:clamp(2.15rem,4.8vw,3.55rem)}
h2{font-size:clamp(1.7rem,3.1vw,2.5rem)}
h3{font-size:clamp(1.18rem,1.9vw,1.5rem);line-height:1.25}
h4{font-size:1.03rem;line-height:1.35;letter-spacing:-.01em}
p{margin:0 0 1.1em;color:var(--text-2)}
a{color:var(--blue-2);text-decoration:none;transition:color .18s ease}
a:hover{color:#7FB0FF}
img{max-width:100%;height:auto;display:block}
ul,ol{margin:0 0 1.1em;padding-left:1.15em}
li{margin:.38em 0;color:var(--text-2);line-height:1.62}
strong{color:var(--text);font-weight:600}
hr{border:0;border-top:1px solid var(--line);margin:2.4rem 0}
::selection{background:rgba(244,84,111,.32);color:#fff}

:focus-visible{outline:2px solid var(--flame-1);outline-offset:3px;border-radius:4px}

.skip{
  position:absolute;left:-9999px;top:0;z-index:999;
  background:var(--flame-2);color:#fff;padding:12px 18px;border-radius:0 0 10px 0;font-weight:600
}
.skip:focus{left:0}

/* ---------- 3. Layout ---------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gut)}
.wrap-narrow{max-width:900px}
section{position:relative}
.section{padding-block:var(--sp-section)}
.section-sm{padding-block:clamp(48px,6vw,80px)}
.section-head{max-width:760px;margin-bottom:clamp(34px,4vw,56px)}
.section-head.center{margin-inline:auto;text-align:center}
.section-head p{font-size:1.06rem}

.grid,.g-2,.g-3,.g-4,.g-2-1,.g-1-2{display:grid;gap:clamp(16px,2vw,24px)}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
.g-2-1{grid-template-columns:1.15fr .85fr;gap:clamp(28px,4vw,64px);align-items:center}
.g-1-2{grid-template-columns:.85fr 1.15fr;gap:clamp(28px,4vw,64px);align-items:center}

/* Light "paper" sections */
.paper{background:var(--paper);color:var(--paper-ink)}
.paper h1,.paper h2,.paper h3,.paper h4{color:var(--paper-ink)}
.paper p,.paper li{color:var(--paper-muted)}
.paper strong{color:var(--paper-ink)}
.paper a{color:#1A58B8}
.paper .eyebrow{color:#B3356F}
.paper .card{background:var(--paper-2);border-color:var(--paper-line);box-shadow:0 12px 34px -26px rgba(16,32,70,.5)}
.paper .card:hover{border-color:#B9C7E2}
.paper .card h3,.paper .card h4{color:var(--paper-ink)}
.paper .divider{background:var(--paper-line)}

/* ---------- 4. Navigation ---------- */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:100;
  background:rgba(7,10,18,.62);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease;
}
.nav.is-stuck{background:rgba(7,10,18,.92);border-bottom-color:var(--line)}
.nav-in{display:flex;align-items:center;gap:22px;height:74px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand img{width:34px;height:auto}
.brand-text{font-family:var(--ff-head);font-weight:700;font-size:1.12rem;letter-spacing:-.03em;color:#fff;line-height:1}
.brand-text span{display:block;font-family:var(--ff-mono);font-size:.56rem;font-weight:500;letter-spacing:.22em;color:var(--muted);margin-top:3px;text-transform:uppercase}

.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;list-style:none;padding:0;margin-bottom:0}
.nav-links li{margin:0}
.nav-links a{
  display:block;padding:9px 13px;border-radius:var(--r-pill);
  color:var(--text-2);font-size:.925rem;font-weight:500;letter-spacing:-.01em;
  transition:color .18s ease,background .18s ease;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.07)}
.nav-links a.active{color:#fff;background:rgba(255,255,255,.1)}
.nav-cta{margin-left:10px}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:40px;border-radius:10px;
  background:rgba(255,255,255,.07);border:1px solid var(--line);cursor:pointer;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;padding:0
}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;transition:transform .25s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 5. Buttons & chips ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border-radius:var(--r-pill);border:1px solid transparent;
  font-family:var(--ff-body);font-size:.95rem;font-weight:600;letter-spacing:-.01em;
  cursor:pointer;transition:transform .18s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .18s ease;
  text-align:center;line-height:1.2;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 12px 30px -14px rgba(244,84,111,.75)}
.btn-primary:hover{color:#fff;box-shadow:0 18px 40px -14px rgba(244,84,111,.85)}
.btn-ghost{background:rgba(255,255,255,.05);color:var(--text);border-color:var(--line-strong)}
.btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.3)}
.btn-dark{background:var(--paper-ink);color:#fff}
.btn-dark:hover{color:#fff;background:#16203a}
.btn-sm{padding:9px 17px;font-size:.875rem}
.btn-wide{width:100%}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--ff-mono);font-size:.715rem;font-weight:600;
  letter-spacing:.2em;text-transform:uppercase;color:var(--flame-1);
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:1.5px;background:var(--grad);border-radius:2px;flex-shrink:0}
.eyebrow.no-rule::before{display:none}

.chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.06);border:1px solid var(--line);
  font-family:var(--ff-mono);font-size:.7rem;font-weight:500;letter-spacing:.07em;
  color:var(--text-2);text-transform:uppercase;
}
.chip-flame{background:rgba(244,84,111,.14);border-color:rgba(244,84,111,.3);color:#FFB3BE}
.chip-blue{background:var(--blue-dim);border-color:rgba(76,140,240,.3);color:#9CC2FF}
.chip-ok{background:rgba(59,196,137,.13);border-color:rgba(59,196,137,.3);color:#86E3BC}
.chip-warn{background:rgba(240,181,68,.13);border-color:rgba(240,181,68,.3);color:#F6D694}
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.paper .chip{background:#EAF0FA;border-color:var(--paper-line);color:#44557A}

.dot{width:7px;height:7px;border-radius:50%;background:currentColor;flex-shrink:0}
.dot-live{background:var(--ok);box-shadow:0 0 0 0 rgba(59,196,137,.6);animation:pulse 2.2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 9px rgba(59,196,137,0)}100%{box-shadow:0 0 0 0 rgba(59,196,137,0)}}

/* ---------- 6. Cards & panels ---------- */
.card{
  position:relative;
  background:linear-gradient(170deg,rgba(255,255,255,.045),rgba(255,255,255,.015));
  border:1px solid var(--line);border-radius:var(--r-lg);
  padding:clamp(22px,2.4vw,30px);
  transition:border-color .25s ease,transform .25s ease,background .25s ease;
  height:100%;
}
.card:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.card > :last-child{margin-bottom:0}
.card p{font-size:.955rem;margin-bottom:0}
.card h3,.card h4{margin-bottom:.45em}
.card-flat{background:rgba(255,255,255,.028)}
.card-flat:hover{transform:none}
.card-glow{overflow:hidden}
.card-glow::before{
  content:"";position:absolute;inset:-1px;border-radius:inherit;padding:1px;
  background:var(--grad);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .3s ease;pointer-events:none
}
.card-glow:hover::before{opacity:.7}

.ic{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
  background:var(--grad-soft);border:1px solid rgba(255,164,58,.22);
  margin-bottom:17px;flex-shrink:0;
}
.ic svg{width:22px;height:22px;stroke:var(--flame-1);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.ic-blue{background:var(--blue-dim);border-color:rgba(76,140,240,.25)}
.ic-blue svg{stroke:var(--blue-2)}
.ic-ok{background:rgba(59,196,137,.12);border-color:rgba(59,196,137,.25)}
.ic-ok svg{stroke:var(--ok)}
.ic-sm{width:38px;height:38px;border-radius:11px;margin-bottom:13px}
.ic-sm svg{width:18px;height:18px}
.paper .ic{background:#FFF1E6;border-color:#FFD9BC}
.paper .ic-blue{background:#E7EFFC;border-color:#C9DBF7}

.num{
  font-family:var(--ff-mono);font-size:.74rem;font-weight:600;letter-spacing:.12em;
  color:var(--flame-2);display:block;margin-bottom:10px
}
.paper .num{color:#C4356F}

.divider{height:1px;background:var(--line);border:0;margin:0}

/* Panel: a framed block used for diagrams, tables, terminals */
.panel{
  background:var(--ink-2);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow)
}
.panel-head{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  padding:13px 18px;border-bottom:1px solid var(--line);
  background:rgba(255,255,255,.028);
  font-family:var(--ff-mono);font-size:.76rem;letter-spacing:.09em;text-transform:uppercase;color:var(--muted)
}
.panel-head .lights{display:flex;gap:6px;margin-right:4px}
.panel-head .lights i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.18);display:block}
.panel-head .lights i:first-child{background:#FF5F57}
.panel-head .lights i:nth-child(2){background:#FEBC2E}
.panel-head .lights i:nth-child(3){background:#28C840}
.panel-body{padding:clamp(18px,2.4vw,28px)}

/* ---------- 7. Hero ---------- */
.hero{position:relative;padding-top:clamp(118px,14vw,172px);padding-bottom:clamp(60px,8vw,104px);overflow:hidden}
.hero-grid{
  position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 25%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 25%,transparent 78%);
}
.hero-glow{
  position:absolute;z-index:0;pointer-events:none;border-radius:50%;filter:blur(110px);opacity:.36
}
.hero-glow.a{width:560px;height:560px;top:-220px;right:-120px;background:radial-gradient(circle,rgba(222,52,155,.5),transparent 68%)}
.hero-glow.b{width:620px;height:620px;top:-260px;left:-180px;background:radial-gradient(circle,rgba(255,164,58,.34),transparent 68%)}
.hero-glow.c{width:700px;height:420px;bottom:-280px;left:30%;background:radial-gradient(circle,rgba(31,99,200,.38),transparent 70%)}
.hero .wrap{position:relative;z-index:1}
.hero h1{margin-bottom:.38em}
.hero-lead{font-size:clamp(1.03rem,1.5vw,1.2rem);max-width:60ch;color:var(--text-2)}
.gradient-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

.hero-cols{display:grid;grid-template-columns:1.06fr .94fr;gap:clamp(32px,4.5vw,66px);align-items:center}

/* Terminal */
.term{font-family:var(--ff-mono);font-size:.82rem;line-height:1.95;color:#B9C7E3;background:#060910}
.term-line{display:block;white-space:pre-wrap;word-break:break-word}
.term .c-dim{color:#5B6B8A}
.term .c-ok{color:var(--ok)}
.term .c-warn{color:var(--warn)}
.term .c-alert{color:var(--alert)}
.term .c-flame{color:var(--flame-1)}
.term .c-blue{color:var(--blue-2)}
.term .caret{display:inline-block;width:8px;height:15px;background:var(--flame-2);vertical-align:-2px;animation:blink 1.05s steps(2,start) infinite}
@keyframes blink{50%{opacity:0}}

/* Trust bar */
.trustbar{border-block:1px solid var(--line);background:rgba(255,255,255,.022)}
.trustbar-in{display:flex;flex-wrap:wrap;align-items:center;gap:clamp(18px,4vw,52px);padding-block:22px}
.trustbar-label{font-family:var(--ff-mono);font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted)}
.trustbar-items{display:flex;flex-wrap:wrap;gap:10px 26px;align-items:center}
.trustbar-items span{font-family:var(--ff-head);font-weight:600;font-size:.95rem;color:var(--text-2);letter-spacing:-.01em}

/* ---------- 8. Components ---------- */
/* Stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(14px,2vw,22px)}
.stat{padding:clamp(20px,2.3vw,26px);border-radius:var(--r);border:1px solid var(--line);background:rgba(255,255,255,.03)}
.stat-n{font-family:var(--ff-head);font-size:clamp(1.85rem,3.4vw,2.6rem);font-weight:700;letter-spacing:-.035em;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-l{font-size:.885rem;color:var(--muted);margin:9px 0 0;line-height:1.45}
.paper .stat{background:var(--paper-2);border-color:var(--paper-line)}
.paper .stat-l{color:var(--paper-muted)}

/* Split compare (attacker vs defender) */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.compare > div{padding:clamp(22px,2.6vw,32px)}
.compare .side-a{background:linear-gradient(170deg,rgba(255,95,109,.08),rgba(255,95,109,.02));border-right:1px solid var(--line)}
.compare .side-b{background:linear-gradient(170deg,rgba(59,196,137,.08),rgba(59,196,137,.02))}
.compare h4{display:flex;align-items:center;gap:9px;font-family:var(--ff-mono);font-size:.74rem;letter-spacing:.17em;text-transform:uppercase;margin-bottom:18px}
.compare .side-a h4{color:#FF9AA3}
.compare .side-b h4{color:#7FE0B5}
.compare ul{list-style:none;padding:0;margin:0}
.compare li{position:relative;padding-left:22px;font-size:.95rem;margin:.6em 0}
.compare li::before{content:"";position:absolute;left:0;top:11px;width:9px;height:1.5px;background:currentColor;opacity:.5}

/* Attack timeline */
.timeline{border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.tl-row{display:grid;grid-template-columns:168px 1fr;align-items:stretch;border-bottom:1px solid var(--line)}
.tl-row:last-child{border-bottom:0}
.tl-label{
  padding:16px 18px;background:rgba(255,255,255,.035);border-right:1px solid var(--line);
  font-family:var(--ff-mono);font-size:.72rem;letter-spacing:.11em;text-transform:uppercase;color:var(--text-2);
  display:flex;align-items:center
}
.tl-stages{display:grid;grid-template-columns:repeat(5,1fr)}
.tl-stage{
  padding:16px 10px;text-align:center;font-size:.78rem;color:var(--text-2);
  border-right:1px solid var(--line);display:flex;align-items:center;justify-content:center;line-height:1.3
}
.tl-stage:last-child{border-right:0}
.tl-track{position:relative;display:grid;grid-template-columns:repeat(5,1fr);min-height:56px}
.tl-track > i{border-right:1px solid var(--line)}
.tl-track > i:last-child{border-right:0}
.tl-marker{
  position:absolute;top:50%;transform:translate(-50%,-50%);
  display:inline-flex;align-items:center;gap:7px;padding:6px 13px;border-radius:var(--r-pill);
  font-family:var(--ff-mono);font-size:.68rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;white-space:nowrap
}
.tl-marker.late{background:rgba(255,95,109,.16);border:1px solid rgba(255,95,109,.4);color:#FFA7AE;left:90%}
.tl-marker.early{background:rgba(59,196,137,.16);border:1px solid rgba(59,196,137,.42);color:#88E5BE;left:10%}
.tl-row.stage-head .tl-stages{background:rgba(255,255,255,.02)}

/* Tabs */
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px}
.tab{
  padding:10px 18px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:rgba(255,255,255,.035);color:var(--text-2);
  font-family:var(--ff-body);font-size:.9rem;font-weight:500;cursor:pointer;
  transition:all .2s ease
}
.tab:hover{color:#fff;border-color:var(--line-strong)}
.tab[aria-selected="true"]{background:var(--grad);border-color:transparent;color:#fff;font-weight:600}
.tabpanel[hidden]{display:none}

/* Accordion */
.acc{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:rgba(255,255,255,.025)}
.acc + .acc{margin-top:12px}
.acc summary{
  list-style:none;cursor:pointer;padding:18px 22px;display:flex;align-items:center;gap:14px;
  font-family:var(--ff-head);font-weight:600;font-size:1.02rem;color:var(--text);
  transition:background .2s ease
}
.acc summary::-webkit-details-marker{display:none}
.acc summary:hover{background:rgba(255,255,255,.035)}
.acc summary .plus{
  margin-left:auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--line-strong);
  display:grid;place-items:center;flex-shrink:0;position:relative;transition:transform .25s ease,background .25s ease
}
.acc summary .plus::before,.acc summary .plus::after{
  content:"";position:absolute;background:var(--text-2);border-radius:2px;transition:opacity .2s ease
}
.acc summary .plus::before{width:11px;height:1.6px}
.acc summary .plus::after{width:1.6px;height:11px}
.acc[open] summary .plus{transform:rotate(90deg);background:var(--grad);border-color:transparent}
.acc[open] summary .plus::after{opacity:0}
.acc[open] summary .plus::before{background:#fff}
.acc .acc-body{padding:0 22px 22px;border-top:1px solid var(--line);padding-top:18px}
.acc .acc-body > :last-child{margin-bottom:0}
.paper .acc{background:var(--paper-2);border-color:var(--paper-line)}
.paper .acc summary{color:var(--paper-ink)}
.paper .acc summary:hover{background:#F7F9FD}
.paper .acc .acc-body{border-top-color:var(--paper-line)}

/* Data table */
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
table.dt{width:100%;border-collapse:collapse;font-size:.93rem;min-width:560px}
table.dt th,table.dt td{text-align:left;padding:13px 16px;border-bottom:1px solid var(--line);vertical-align:top}
table.dt thead th{
  font-family:var(--ff-mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);font-weight:600;background:rgba(255,255,255,.035);white-space:nowrap
}
table.dt tbody tr:last-child td{border-bottom:0}
table.dt tbody tr:hover{background:rgba(255,255,255,.025)}
table.dt td{color:var(--text-2)}
table.dt td:first-child{color:var(--text);font-weight:500}
.paper table.dt th,.paper table.dt td{border-bottom-color:var(--paper-line)}
.paper table.dt thead th{background:#EAF0FA;color:#5A6A8A}
.paper table.dt td{color:var(--paper-muted)}
.paper table.dt td:first-child{color:var(--paper-ink)}
.paper table.dt tbody tr:hover{background:#F7F9FD}

/* Feature pills grid (ESS key features) */
.feat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:10px}
.feat{
  display:flex;align-items:center;gap:10px;padding:13px 15px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  font-size:.885rem;color:var(--text-2);line-height:1.35;transition:all .2s ease
}
.feat:hover{border-color:rgba(244,84,111,.4);background:rgba(244,84,111,.07);color:#fff}
.feat i{width:5px;height:5px;border-radius:50%;background:var(--grad);flex-shrink:0}
.paper .feat{background:var(--paper-2);border-color:var(--paper-line);color:#44557A}
.paper .feat:hover{border-color:#F3A0B4;background:#FFF4F6;color:var(--paper-ink)}

/* Service catalogue */
.filters{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:26px}
.search-box{position:relative;flex:1 1 330px;min-width:300px}
.search-box input{
  width:100%;padding:12px 16px 12px 42px;border-radius:var(--r-pill);
  border:1px solid var(--paper-line);background:#fff;color:var(--paper-ink);
  font-family:var(--ff-body);font-size:.93rem
}
.search-box input::placeholder{color:#93A1BC}
.search-box svg{position:absolute;left:15px;top:50%;transform:translateY(-50%);width:17px;height:17px;stroke:#93A1BC;fill:none;stroke-width:2}
.fchip{
  padding:9px 16px;border-radius:var(--r-pill);border:1px solid var(--paper-line);background:#fff;
  color:#44557A;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .18s ease;font-family:var(--ff-body)
}
.fchip:hover{border-color:#A9BCDE;color:var(--paper-ink)}
.fchip[aria-pressed="true"]{background:var(--paper-ink);border-color:var(--paper-ink);color:#fff}
.svc-count{font-family:var(--ff-mono);font-size:.76rem;color:var(--paper-muted);letter-spacing:.06em}
.svc-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:16px}
.svc[hidden]{display:none}
.svc{scroll-margin-top:100px}
.svc-empty{padding:42px;text-align:center;color:var(--paper-muted);border:1px dashed var(--paper-line);border-radius:var(--r-lg)}
.badge{
  display:inline-block;padding:3px 9px;border-radius:5px;font-family:var(--ff-mono);
  font-size:.63rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase
}
.b-critical{background:#FDE7EA;color:#B3243A}
.b-strategic{background:#E7EEFD;color:#1C4FA8}
.b-advanced{background:#F1E8FD;color:#6B35B8}
.b-essential{background:#E4F6EE;color:#1C7A55}
.b-sector{background:#FFF0DF;color:#9A5A12}
.b-high{background:#E8F1F6;color:#1F5C78}
.b-emerging{background:#FCE9F4;color:#AD2277}

/* Steps / process */
.steps{counter-reset:s;display:grid;gap:14px}
.step{
  position:relative;padding:24px 26px 24px 70px;border-radius:var(--r-lg);
  border:1px solid var(--line);background:rgba(255,255,255,.03)
}
.step::before{
  counter-increment:s;content:counter(s,decimal-leading-zero);
  position:absolute;left:24px;top:24px;
  font-family:var(--ff-mono);font-size:.95rem;font-weight:700;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent
}
.step h4{margin-bottom:.4em}
.step p,.step li{font-size:.93rem}
.step ul{margin:0;padding-left:1.05em}
.paper .step{background:var(--paper-2);border-color:var(--paper-line)}

/* Flow (horizontal arrows) */
.flow{display:flex;flex-wrap:wrap;align-items:stretch;gap:10px}
.flow-node{
  flex:1 1 150px;padding:16px 15px;border-radius:var(--r);border:1px solid var(--line);
  background:rgba(255,255,255,.035);font-size:.875rem;line-height:1.4;color:var(--text-2);position:relative
}
.flow-node b{display:block;font-family:var(--ff-mono);font-size:.66rem;letter-spacing:.13em;text-transform:uppercase;color:var(--flame-1);margin-bottom:7px;font-weight:600}
.flow-node.is-alert{border-color:rgba(255,95,109,.4);background:rgba(255,95,109,.08)}
.flow-node.is-alert b{color:#FF9AA3}

/* Quote / source callout */
.quote{
  border-left:3px solid;border-image:var(--grad) 1;
  padding:6px 0 6px 22px;margin:0 0 18px
}
.quote p{font-family:var(--ff-head);font-size:clamp(1.05rem,1.7vw,1.3rem);line-height:1.45;color:var(--text);letter-spacing:-.02em;margin-bottom:.5em}
.quote cite{font-family:var(--ff-mono);font-size:.72rem;letter-spacing:.08em;color:var(--muted);font-style:normal}
.paper .quote p{color:var(--paper-ink)}
.paper .quote cite{color:var(--paper-muted)}

/* Callout */
.callout{
  display:flex;gap:15px;padding:18px 20px;border-radius:var(--r);
  background:var(--blue-dim);border:1px solid rgba(76,140,240,.26)
}
.callout svg{width:20px;height:20px;stroke:var(--blue-2);fill:none;stroke-width:1.8;flex-shrink:0;margin-top:3px}
.callout p{margin:0;font-size:.93rem;color:var(--text-2)}
.callout.warn{background:rgba(240,181,68,.1);border-color:rgba(240,181,68,.28)}
.callout.warn svg{stroke:var(--warn)}
.paper .callout{background:#EAF1FD;border-color:#C9DBF7}
.paper .callout p{color:#3C4F72}
.paper .callout.warn{background:#FFF6E6;border-color:#F3DCAE}

/* CTA band */
.cta-band{position:relative;overflow:hidden;border-radius:clamp(20px,3vw,30px);padding:clamp(34px,5vw,60px);background:linear-gradient(135deg,#140E1E,#0C1222 60%);border:1px solid var(--line-strong)}
.cta-band::before{content:"";position:absolute;width:520px;height:520px;right:-160px;top:-230px;border-radius:50%;background:radial-gradient(circle,rgba(222,52,155,.4),transparent 68%);filter:blur(70px)}
.cta-band::after{content:"";position:absolute;width:420px;height:420px;left:-150px;bottom:-230px;border-radius:50%;background:radial-gradient(circle,rgba(255,164,58,.3),transparent 68%);filter:blur(70px)}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{max-width:20ch}
.cta-band p{max-width:58ch;font-size:1.04rem}

/* Hardware spec card */
.spec{display:grid;grid-template-columns:auto 1fr;gap:8px 16px;font-size:.88rem;margin:0}
.spec dt{font-family:var(--ff-mono);font-size:.68rem;letter-spacing:.11em;text-transform:uppercase;color:var(--muted);padding-top:3px}
.spec dd{margin:0;color:var(--text-2)}

/* Status rail (R&D stage) */
.rail{display:flex;align-items:center;gap:0;margin:18px 0 0}
.rail span{
  flex:1;height:5px;background:rgba(255,255,255,.1);position:relative
}
.rail span:first-child{border-radius:4px 0 0 4px}
.rail span:last-child{border-radius:0 4px 4px 0}
.rail span.on{background:var(--grad)}
.rail-labels{display:flex;justify-content:space-between;margin-top:9px;font-family:var(--ff-mono);font-size:.63rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}

/* ---------- 9. Forms ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:.83rem;font-weight:600;color:var(--text);letter-spacing:-.005em}
.field label .req{color:var(--flame-2)}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:11px;
  background:rgba(255,255,255,.045);border:1px solid var(--line-strong);
  color:var(--text);font-family:var(--ff-body);font-size:.93rem;transition:border-color .2s ease,background .2s ease
}
.field textarea{min-height:128px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#6F7E9C}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--flame-2);background:rgba(255,255,255,.06)}
.field select{appearance:none;background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none' stroke='%238F9EBB' stroke-width='2'%3E%3Cpath d='M1 1l5 5 5-5'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 15px center;padding-right:38px}
.field select option{background:var(--ink-2);color:var(--text)}
.field .err{font-size:.78rem;color:var(--alert);display:none}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:var(--alert)}
.field.invalid .err{display:block}
.form-note{font-size:.82rem;color:var(--muted);margin:14px 0 0}
.form-status{margin-top:16px;padding:15px 18px;border-radius:var(--r);display:none;font-size:.93rem}
.form-status.show{display:block}
.form-status.ok{background:rgba(59,196,137,.12);border:1px solid rgba(59,196,137,.32);color:#9BEBC7}
.form-status.bad{background:rgba(255,95,109,.1);border:1px solid rgba(255,95,109,.3);color:#FFABB2}
.hp{position:absolute;left:-9999px;opacity:0;height:0;width:0}

/* Contact rows */
.contact-line{display:flex;gap:14px;align-items:flex-start;padding:15px 0;border-bottom:1px solid var(--line)}
.contact-line:last-child{border-bottom:0}
.contact-line svg{width:19px;height:19px;stroke:var(--flame-1);fill:none;stroke-width:1.7;flex-shrink:0;margin-top:4px}
.contact-line b{display:block;font-size:.72rem;font-family:var(--ff-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:600;margin-bottom:3px}
.contact-line span,.contact-line a{font-size:.985rem;color:var(--text-2)}

/* ---------- 10. Footer ---------- */
.footer{border-top:1px solid var(--line);background:#05080F;padding-block:clamp(44px,5vw,64px) 0}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:clamp(24px,3vw,44px)}
.footer h5{font-family:var(--ff-mono);font-size:.7rem;letter-spacing:.17em;text-transform:uppercase;color:var(--muted);margin:0 0 15px;font-weight:600}
.footer ul{list-style:none;padding:0;margin:0}
.footer li{margin:.5em 0}
.footer li a{color:var(--text-2);font-size:.92rem}
.footer li a:hover{color:#fff}
.footer-about p{font-size:.92rem;max-width:40ch}
.footer-bottom{
  margin-top:clamp(32px,4vw,48px);padding-block:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center
}
.footer-bottom p{margin:0;font-size:.82rem;color:var(--muted)}
.footer-bottom .legal{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom .legal a{font-size:.82rem;color:var(--muted)}
.footer-bottom .legal a:hover{color:var(--text)}

.totop{
  position:fixed;right:22px;bottom:22px;z-index:90;width:44px;height:44px;border-radius:50%;
  background:var(--grad);border:0;cursor:pointer;display:grid;place-items:center;
  opacity:0;visibility:hidden;transform:translateY(10px);transition:all .25s ease;
  box-shadow:0 12px 26px -12px rgba(244,84,111,.8)
}
.totop.show{opacity:1;visibility:visible;transform:translateY(0)}
.totop svg{width:18px;height:18px;stroke:#fff;fill:none;stroke-width:2.2}

/* ---------- 11. Utilities ---------- */
.align-start{align-items:start}
.mb-0{margin-bottom:0}
.mt-0{margin-top:0}
.mt-1{margin-top:12px}
.mt-2{margin-top:22px}
.mt-3{margin-top:34px}
.mt-4{margin-top:48px}
.center{text-align:center}
.lead{font-size:1.08rem;color:var(--text-2)}
.small{font-size:.86rem}
.muted{color:var(--muted)}
.mono{font-family:var(--ff-mono)}
.nowrap{white-space:nowrap}
.list-check{list-style:none;padding:0}
.list-check li{position:relative;padding-left:27px;margin:.55em 0}
.list-check li::before{
  content:"";position:absolute;left:0;top:9px;width:14px;height:8px;
  border-left:2px solid var(--ok);border-bottom:2px solid var(--ok);transform:rotate(-45deg)
}
.list-arrow{list-style:none;padding:0}
.list-arrow li{position:relative;padding-left:22px;margin:.5em 0}
.list-arrow li::before{content:"▸";position:absolute;left:0;color:var(--flame-2);font-size:.85em;top:1px}
.anchor{scroll-margin-top:96px}

/* ---------- 12. Motion ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}
.reveal.d2{transition-delay:.16s}
.reveal.d3{transition-delay:.24s}
.reveal.d4{transition-delay:.32s}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* ---------- 13. Responsive ---------- */
@media (max-width:1040px){
  .hero-cols{grid-template-columns:1fr;gap:38px}
  .g-4{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .footer-top{grid-template-columns:1fr 1fr}
  .footer-about{grid-column:1/-1}
}
@media (max-width:900px){
  .nav-toggle{display:flex}
  .nav-cta{margin-left:0}
  .nav-links{
    position:fixed;inset:74px 0 auto 0;flex-direction:column;align-items:stretch;gap:2px;
    background:#05080F;box-shadow:0 30px 60px -30px rgba(0,0,0,.9);
    padding:14px var(--gut) 26px;border-bottom:1px solid var(--line);
    max-height:calc(100dvh - 74px);overflow-y:auto;
    transform:translateY(-14px);opacity:0;visibility:hidden;transition:all .24s ease
  }
  .nav-links.open{transform:none;opacity:1;visibility:visible}
  .nav-links a{padding:14px 4px;font-size:1.02rem;border-radius:10px}
  .nav-links .btn{margin-top:12px;width:100%}
  .g-3,.g-2,.g-2-1,.g-1-2{grid-template-columns:1fr}
  .compare{grid-template-columns:1fr}
  .compare .side-a{border-right:0;border-bottom:1px solid var(--line)}
  .tl-row{grid-template-columns:1fr}
  .tl-label{border-right:0;border-bottom:1px solid var(--line)}
  .tl-stages{grid-template-columns:repeat(5,1fr);font-size:.7rem}
  .tl-stage{padding:12px 5px;font-size:.68rem}
  .form-grid{grid-template-columns:1fr}
}
@media (max-width:640px){
  body{font-size:16px}
  .g-4,.stats,.footer-top{grid-template-columns:1fr}
  .stats{gap:12px}
  .btn-row .btn{width:100%}
  .trustbar-in{flex-direction:column;align-items:flex-start;gap:12px}
  .step{padding:20px 20px 20px 20px}
  .step::before{position:static;display:block;margin-bottom:8px}
  .tl-marker.late,.tl-marker.early{font-size:.6rem;padding:5px 9px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* ---------- Print ---------- */
@media print{
  .nav,.totop,.cta-band,.footer{display:none}
  body{background:#fff;color:#000}
}

/* ==========================================================================
   14. Readability, people and guided discovery  (added in the V3 pass)
   ========================================================================== */

/* ---- Reading measure -----------------------------------------------------
   Long lines are the main cause of eye strain on wide screens. These rules
   cap the line length without changing any layout, because they only ever
   make a paragraph narrower than its container. ------------------------- */
main p{max-width:76ch}
main li{max-width:72ch}
.section-head.center p{margin-inline:auto}
.card p,.card li,.step p,.step li,.feat,.stat-l,.form-note,.term,.contact-line{max-width:none}
.hero-lead{max-width:60ch}

/* ---- Footer identity ---- */
.handmade{display:flex;align-items:center;gap:8px;font-family:var(--ff-mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:14px 0 0}
.legal-ids{font-family:var(--ff-mono);font-size:.7rem;letter-spacing:.06em;color:var(--muted);display:inline-block;margin-top:5px}

/* ---- People ---- */
.avatar{
  width:54px;height:54px;border-radius:16px;flex-shrink:0;
  display:grid;place-items:center;
  font-family:var(--ff-head);font-weight:700;font-size:1.05rem;letter-spacing:.02em;color:#fff;
  background:var(--grad);
  box-shadow:0 10px 24px -14px rgba(244,84,111,.8)
}
.avatar-b{background:linear-gradient(104deg,#2F6FD0,#1C4F8F);box-shadow:0 10px 24px -14px rgba(47,111,208,.8)}
.person{
  background:linear-gradient(170deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  border:1px solid var(--line);border-radius:var(--r-lg);
  padding:clamp(24px,2.6vw,32px);height:100%
}
.person-head{display:flex;align-items:center;gap:16px;margin-bottom:18px}
.person-head h3{margin:0 0 2px;font-size:1.26rem}
.person-role{
  margin:0;font-family:var(--ff-mono);font-size:.7rem;letter-spacing:.15em;
  text-transform:uppercase;color:var(--flame-1)
}
.person p{font-size:.955rem}
.person em{color:var(--text);font-style:italic}
.paper .person{background:var(--paper-2);border-color:var(--paper-line)}
.paper .person-role{color:#B3356F}

.founder-strip{
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  padding:20px 24px;border-radius:var(--r-lg);
  border:1px solid var(--line);background:rgba(255,255,255,.028)
}
.founder-strip p{margin:0;flex:1 1 320px;font-size:.95rem}
.founder-strip .avatar{width:46px;height:46px;border-radius:14px;font-size:.92rem}

/* ---- Guided starting point (services page) ---- */
.guide{
  border:1px solid var(--paper-line);background:var(--paper-2);
  border-radius:var(--r-lg);padding:clamp(22px,2.6vw,32px);
  box-shadow:0 14px 40px -30px rgba(16,32,70,.55)
}
.guide h3{margin-bottom:.35em}
.guide-intro{color:var(--paper-muted);font-size:.97rem;max-width:62ch}
.guide-step{margin-top:22px}
.guide-step > span{
  display:block;font-family:var(--ff-mono);font-size:.68rem;letter-spacing:.15em;
  text-transform:uppercase;color:var(--paper-muted);margin-bottom:10px;font-weight:600
}
.guide-opts{display:flex;flex-wrap:wrap;gap:9px}
.gopt{
  padding:10px 17px;border-radius:var(--r-pill);border:1px solid var(--paper-line);
  background:#fff;color:#44557A;font-family:var(--ff-body);font-size:.9rem;font-weight:500;
  cursor:pointer;transition:all .18s ease
}
.gopt:hover{border-color:#A9BCDE;color:var(--paper-ink);transform:translateY(-1px)}
.gopt[aria-pressed="true"]{background:var(--paper-ink);border-color:var(--paper-ink);color:#fff}
.guide-out{
  margin-top:26px;padding-top:24px;border-top:1px solid var(--paper-line)
}
.guide-out[hidden]{display:none}
.guide-out h4{margin-bottom:6px}
.guide-out .muted{color:var(--paper-muted)}
.guide-list{display:grid;gap:10px;margin:16px 0 0;padding:0;list-style:none}
.guide-list li{margin:0;max-width:none}
.guide-list a{
  display:flex;align-items:flex-start;gap:13px;padding:14px 16px;border-radius:var(--r);
  border:1px solid var(--paper-line);background:#F8FAFD;color:var(--paper-ink);
  font-weight:600;font-size:.95rem;transition:all .18s ease;text-decoration:none
}
.guide-list a:hover{border-color:#A9BCDE;background:#fff;transform:translateX(3px)}
.guide-list a > span{display:block;font-weight:600;color:var(--paper-ink);line-height:1.35}
.guide-list a > span > span{display:block;font-weight:400;font-size:.88rem;color:var(--paper-muted);margin-top:3px}
.guide-list a b{
  flex-shrink:0;font-family:var(--ff-mono);font-size:.7rem;color:#C4356F;
  padding-top:3px;letter-spacing:.06em
}
.guide-why{font-size:.9rem;color:var(--paper-muted);margin:16px 0 0}

@media (max-width:640px){
  .founder-strip{padding:18px}
  .person-head{gap:13px}
  .avatar{width:46px;height:46px;border-radius:14px;font-size:.92rem}
}

/* Buttons keep their own colours inside light sections */
.paper .btn-primary,.paper .btn-dark{color:#fff}
.paper .btn-primary:hover,.paper .btn-dark:hover{color:#fff}
.paper .btn-ghost{background:#fff;color:var(--paper-ink);border-color:var(--paper-line)}
.paper .btn-ghost:hover{background:#fff;color:var(--paper-ink);border-color:#A9BCDE}