/* ============================================================================
   LuciusOS — marketing site · "Signal & Record"
   Warm ink ground, one considered amber accent, monospace evidence motif.
   Deliberate single (dark) visual world. System fonts — no external deps.
   ========================================================================== */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
/* Brand display face — Quicksand (OFL), self-hosted to satisfy our font-src 'self' CSP */
@font-face{font-family:"Quicksand";font-style:normal;font-weight:500;font-display:swap;
  src:url("/assets/fonts/quicksand-500-latin.woff2") format("woff2")}
@font-face{font-family:"Quicksand";font-style:normal;font-weight:600;font-display:swap;
  src:url("/assets/fonts/quicksand-600-latin.woff2") format("woff2")}
:root{
  --bg:#0B0A08;          /* warm near-black ink */
  --bg-2:#14120D;        /* elevated warm surface */
  --surface:rgba(243,240,232,.030);
  --surface-2:rgba(243,240,232,.06);
  --line:rgba(243,240,232,.10);
  --line-2:rgba(243,240,232,.20);
  --text:#F2EFE8;        /* warm paper */
  --dim:#ABA69A;
  --faint:#6C685E;
  --accent:#E6A64D;      /* considered amber / signal */
  --accent-2:#F2CD86;
  --soft:rgba(230,166,77,.12);
  --glow:rgba(230,166,77,.26);
  --r:16px;--r-sm:11px;
  --maxw:1160px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --sans:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",Roboto,system-ui,sans-serif;
  --display:"Quicksand",var(--sans);
  --mono:"SF Mono",ui-monospace,"JetBrains Mono","Roboto Mono",Menlo,monospace;
}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);background:var(--bg);color:var(--text);
  line-height:1.55;letter-spacing:-.011em;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden;
}
/* single warm glow at the crown — one considered light source, not orbs */
body::before{content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:radial-gradient(880px 460px at 50% -14%,var(--soft),transparent 60%),var(--bg)}
/* faint film grain for warmth */
body::after{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.04;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}

a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}

.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:24px}
.eyebrow{font-family:var(--mono);font-size:.74rem;font-weight:500;letter-spacing:.22em;
  text-transform:uppercase;color:var(--accent)}
.gold{background:linear-gradient(94deg,var(--accent),var(--accent-2));-webkit-background-clip:text;
  background-clip:text;color:transparent}

/* ---------- nav ---------- */
.nav{position:fixed;inset:0 0 auto;z-index:50;transition:background .3s,border-color .3s,backdrop-filter .3s}
.nav.scrolled{background:rgba(11,10,8,.72);backdrop-filter:saturate(150%) blur(16px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:76px}
.brand{display:flex;align-items:center;gap:14px;font-family:var(--display);font-weight:600;letter-spacing:-.01em;font-size:1.55rem}
.brand .wm{white-space:nowrap}
.brand .os{color:var(--accent);font-weight:500}
.brand .mark{width:38px;height:38px;flex:none;display:block}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-links a{color:var(--dim);font-size:.9rem;transition:color .2s}
.nav-links a:hover{color:var(--text)}
@media(max-width:760px){.nav-links a:not(.btn){display:none}}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;font-size:.9rem;font-weight:560;
  padding:11px 18px;border-radius:10px;border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .25s,background .25s,border-color .25s;white-space:nowrap}
.btn-primary{background:var(--accent);color:#1a1206;font-weight:660;box-shadow:0 6px 26px -10px var(--glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 34px -10px var(--glow);background:var(--accent-2)}
.btn-ghost{border-color:var(--line-2);color:var(--text);background:var(--surface)}
.btn-ghost:hover{border-color:var(--text);transform:translateY(-2px)}
.btn svg{width:16px;height:16px}

/* ---------- hero ---------- */
.hero{position:relative;padding:172px 0 104px;overflow:hidden}
#graph{position:absolute;inset:0;width:100%;height:100%;z-index:-1;opacity:.9;
  -webkit-mask-image:linear-gradient(180deg,#000 55%,transparent);mask-image:linear-gradient(180deg,#000 55%,transparent)}
.hero h1{font-family:var(--display);font-size:clamp(2.4rem,6vw,4.6rem);line-height:1.06;letter-spacing:-.03em;font-weight:600;
  max-width:15ch;text-wrap:balance}
.hero .lede{margin-top:26px;font-size:clamp(1.05rem,1.65vw,1.28rem);color:var(--dim);max-width:60ch;line-height:1.6}
.hero .cta{margin-top:40px;display:flex;gap:14px;flex-wrap:wrap}
.hero .note{margin-top:22px;font-family:var(--mono);font-size:.78rem;letter-spacing:.02em;color:var(--faint)}

.tag{display:inline-flex;align-items:center;gap:10px;padding:6px 14px 6px 12px;border:1px solid var(--line);
  border-radius:999px;background:var(--surface);font-family:var(--mono);font-size:.74rem;letter-spacing:.08em;
  text-transform:uppercase;color:var(--dim);margin-bottom:30px}
.tag .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 9px var(--accent)}

/* ---------- generic band ---------- */
.band{padding:106px 0}
.band h2{font-family:var(--display);font-size:clamp(1.8rem,3.3vw,2.7rem);letter-spacing:-.024em;line-height:1.12;font-weight:600;
  max-width:20ch;text-wrap:balance;margin-top:14px}
.band .sub{margin-top:18px;color:var(--dim);font-size:1.06rem;max-width:62ch}

/* statement */
.statement p{font-family:var(--display);font-size:clamp(1.45rem,3.2vw,2.3rem);line-height:1.34;letter-spacing:-.018em;font-weight:500;max-width:24ch}
.statement .muted{color:var(--faint)}

/* ---------- grids ---------- */
.grid{display:grid;gap:16px;margin-top:50px}
.g4{grid-template-columns:repeat(4,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
@media(max-width:940px){.g4{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:1fr}}
@media(max-width:560px){.g4{grid-template-columns:1fr}}

.card{position:relative;padding:26px;border:1px solid var(--line);border-radius:var(--r);
  background:linear-gradient(180deg,var(--surface),transparent);overflow:hidden;
  transition:transform .3s var(--ease),border-color .3s}
.card:hover{transform:translateY(-4px);border-color:var(--line-2)}
.card .ico{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;margin-bottom:18px;
  background:var(--soft);border:1px solid rgba(230,166,77,.28)}
.card .ico svg{width:20px;height:20px;stroke:var(--accent);fill:none}
.card h3{font-size:1.1rem;font-weight:620;letter-spacing:-.02em}
.card p{margin-top:8px;color:var(--dim);font-size:.94rem;line-height:1.55}
.card .idx{position:absolute;top:20px;right:22px;font-family:var(--mono);font-size:.72rem;color:var(--faint)}

/* ---------- steps (a real sequence → numbered) ---------- */
.steps{counter-reset:s;display:grid;gap:12px;margin-top:50px}
.step{display:grid;grid-template-columns:auto 1fr;gap:22px;align-items:start;padding:24px 26px;
  border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
.step .num{counter-increment:s;font-family:var(--mono);font-size:.82rem;color:var(--accent);
  width:40px;height:40px;border-radius:10px;display:grid;place-items:center;border:1px solid rgba(230,166,77,.3);background:var(--bg-2)}
.step .num::before{content:counter(s,decimal-leading-zero)}
.step h3{font-size:1.06rem;font-weight:600}
.step p{margin-top:5px;color:var(--dim);font-size:.95rem}

/* ---------- trust strip ---------- */
.trust{border:1px solid var(--line);border-radius:var(--r);background:linear-gradient(180deg,var(--surface),transparent);
  padding:38px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:46px}
@media(max-width:760px){.trust{grid-template-columns:repeat(2,1fr)}}
.trust .k{font-family:var(--mono);font-size:1.25rem;font-weight:600;letter-spacing:-.02em;color:var(--accent)}
.trust .v{margin-top:8px;color:var(--dim);font-size:.9rem;line-height:1.5}

/* ---------- cta band ---------- */
.cta-band{position:relative;text-align:center;border:1px solid var(--line);border-radius:24px;overflow:hidden;
  padding:82px 24px;background:radial-gradient(560px 280px at 50% 0,var(--soft),transparent 70%),var(--bg-2)}
.cta-band h2{margin-inline:auto}
.cta-band .cta{margin-top:30px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);margin-top:112px;padding:58px 0 44px}
.foot{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:40px}
@media(max-width:760px){.foot{grid-template-columns:1fr 1fr}}
.foot .brand{margin-bottom:14px}
.foot p{color:var(--faint);font-size:.9rem;max-width:34ch}
.foot h4{font-family:var(--mono);font-size:.72rem;text-transform:uppercase;letter-spacing:.16em;color:var(--faint);margin-bottom:13px}
.foot a{display:block;color:var(--dim);font-size:.91rem;padding:5px 0;transition:color .2s}
.foot a:hover{color:var(--text)}
.foot-base{margin-top:44px;padding-top:24px;border-top:1px solid var(--line);display:flex;
  justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--faint);font-size:.82rem;font-family:var(--mono);letter-spacing:.02em}
.ph{color:var(--accent);font-family:var(--mono);font-size:.92em}

/* ---------- reveal ---------- */
.rise{opacity:0;transform:translateY(20px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.rise.in{opacity:1;transform:none}
.rise[data-d="1"]{transition-delay:.07s}.rise[data-d="2"]{transition-delay:.14s}
.rise[data-d="3"]{transition-delay:.21s}.rise[data-d="4"]{transition-delay:.28s}
@media(prefers-reduced-motion:reduce){.rise{opacity:1;transform:none;transition:none}}

/* ---------- legal doc pages ---------- */
.doc{max-width:800px;margin-inline:auto;padding:150px 0 40px}
.doc .eyebrow{margin-bottom:14px}
.doc h1{font-family:var(--display);font-size:clamp(1.9rem,3.8vw,2.8rem);letter-spacing:-.025em;font-weight:600;text-wrap:balance}
.doc .updated{margin-top:12px;font-family:var(--mono);color:var(--faint);font-size:.84rem}
.doc .callout{margin:28px 0;padding:16px 18px;border:1px solid var(--line);border-left:3px solid var(--accent);
  border-radius:10px;background:var(--surface);color:var(--dim);font-size:.92rem}
.doc h2{margin-top:40px;font-size:1.3rem;letter-spacing:-.02em;font-weight:640}
.doc h3{margin-top:26px;font-size:1.04rem;font-weight:620}
.doc p,.doc li{color:var(--dim);margin-top:12px;font-size:1rem;line-height:1.72}
.doc ul{margin-top:12px;padding-left:22px}
.doc li{margin-top:8px}
.doc a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.doc strong{color:var(--text);font-weight:600}