/* ============================================================
   NIVĀKYA — SIGNAL DESIGN SYSTEM
   Concept: "Resonance" — every surface derives from an audio signal.
   No external assets. No web fonts. No CDN. Self-contained.
   ============================================================ */

/* ---------- 1. TOKENS ---------- */
/* Palette: institutional navy + slate. LIGHT IS THE DEFAULT.
   Dark is a slate-navy companion, never pure black.
   Contrast: body text >= 7:1 on its surface; all UI text >= 4.5:1 in both themes. */
:root{
  /* surface scale (light) */
  --ink-950:#FFFFFF; --ink-900:#F7F9FB; --ink-850:#F2F5F9;
  --ink-800:#FFFFFF; --ink-750:#F1F4F8; --ink-700:#E7ECF2;
  --ink-600:#D9E1EA; --ink-500:#C3CEDA;
  --line:#DEE4EC; --line-soft:#EBEFF4; --line-bright:#BFC9D6;

  /* text */
  --bone:#0F1E2E; --bone-dim:#3A4A5C; --mute:#5F7085; --mute-2:#78889C;

  /* brand + semantics */
  --brand:#1B4F8A;        /* institutional navy - primary action */
  --brand-deep:#143C69;
  --indigo:#3A6EA8;      /* steel blue - intelligence */
  --aqua:#0F6E68;        /* deep teal - live / positive */
  --coral:#A3312A;       /* brick - risk */
  --amber:#8A6200;       /* ochre - caution */
  --rose:#8C3A63;

  --bg:var(--ink-950);
  --bg-elev:var(--ink-850);
  --surface:#FFFFFF;
  --surface-2:#F4F7FA;
  --text:var(--bone);
  --text-dim:var(--bone-dim);
  --text-mute:var(--mute);
  --accent:var(--brand);
  --accent-ink:#FFFFFF;
  --accent-soft:#EAF1F8;
  --knob:#FFFFFF;

  --grad-signal:linear-gradient(100deg,#1B4F8A 0%,#2A6E92 55%,#0F6E68 100%);
  --grad-scan:linear-gradient(180deg,rgba(27,79,138,.055),rgba(27,79,138,0) 70%);
  --grad-veil:linear-gradient(180deg,rgba(255,255,255,0) 0%,rgba(255,255,255,.88) 60%,#FFFFFF 100%);

  /* geometry */
  --r-xs:6px; --r-sm:10px; --r-md:16px; --r-lg:24px; --r-xl:34px; --r-pill:999px;
  --gut:clamp(18px,4vw,40px);
  --maxw:1240px;
  --rail-h:64px;

  --sh-1:0 1px 2px rgba(16,32,52,.06);
  --sh-2:0 14px 34px -16px rgba(16,32,52,.20);
  --sh-glow:0 0 0 1px rgba(27,79,138,.20),0 14px 34px -20px rgba(27,79,138,.42);

  --ease:cubic-bezier(.22,.68,0,1);
  --ease-out:cubic-bezier(.16,1,.3,1);

  --font-sans:ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}

[data-theme="dark"]{
  --ink-950:#101A24; --ink-900:#131E29; --ink-850:#16212D;
  --ink-800:#1A2632; --ink-750:#1E2B38; --ink-700:#243240;
  --ink-600:#2C3B4B; --ink-500:#37485A;
  --line:#2B3A4A; --line-soft:#233140; --line-bright:#3B4E62;

  --bone:#E9EEF4; --bone-dim:#BCC8D5; --mute:#8B9BAC; --mute-2:#7B8C9E;

  --brand:#4E90D6; --brand-deep:#3D78B8;
  --indigo:#7FA6D4; --aqua:#4FB3AB; --coral:#E0776D; --amber:#D8A54A; --rose:#C97BA8;

  --bg:var(--ink-950);
  --bg-elev:var(--ink-850);
  --surface:#1A2632;
  --surface-2:#21303E;
  --text:var(--bone);
  --text-dim:var(--bone-dim);
  --text-mute:var(--mute);
  --accent:var(--brand);
  --accent-ink:#0B1420;
  --accent-soft:#1E3047;
  --knob:#E9EEF4;

  --grad-signal:linear-gradient(100deg,#4E90D6 0%,#4A9BB8 55%,#4FB3AB 100%);
  --grad-scan:linear-gradient(180deg,rgba(78,144,214,.09),rgba(78,144,214,0) 70%);
  --grad-veil:linear-gradient(180deg,rgba(16,26,36,0) 0%,rgba(16,26,36,.88) 60%,#101A24 100%);

  --sh-1:0 1px 2px rgba(0,0,0,.30);
  --sh-2:0 18px 40px -20px rgba(0,0,0,.62);
  --sh-glow:0 0 0 1px rgba(78,144,214,.26),0 18px 42px -24px rgba(78,144,214,.48);
}

/* ---------- 2. RESET ---------- */
*,*::before,*::after{box-sizing:border-box}
*{margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  background:var(--bg); color:var(--text);
  font-family:var(--font-sans); font-size:16px; line-height:1.62;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  overflow-x:hidden; min-height:100vh;
}
img,svg,canvas{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{list-style:none}
table{border-collapse:collapse;width:100%}
::selection{background:var(--brand);color:var(--accent-ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
}

/* ---------- 3. ATMOSPHERE ---------- */
/* Restrained by design: a faint institutional wash, not a neon field. */
.grain{
  position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.20;mix-blend-mode:multiply;
  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='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.32'/%3E%3C/svg%3E");
}
[data-theme="dark"] .grain{mix-blend-mode:overlay;opacity:.14}
.aurora{position:fixed;inset:-20vh -10vw;z-index:0;pointer-events:none;overflow:hidden}
.aurora i{
  position:absolute;border-radius:50%;filter:blur(120px);
  animation:drift 40s var(--ease) infinite alternate;
}
.aurora i:nth-child(1){width:52vw;height:52vw;left:2vw;top:2vh;background:var(--accent);opacity:.055}
.aurora i:nth-child(2){width:44vw;height:44vw;right:2vw;top:20vh;background:var(--indigo);opacity:.05;animation-delay:-12s}
.aurora i:nth-child(3){width:34vw;height:34vw;left:36vw;bottom:0;background:var(--aqua);opacity:.04;animation-delay:-24s}
@keyframes drift{to{transform:translate3d(3vw,-3vh,0) scale(1.10)}}

.spotlight{
  position:fixed;z-index:1;pointer-events:none;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle,rgba(27,79,138,.055),transparent 62%);
  transform:translate(-50%,-50%);transition:opacity .45s;opacity:0;mix-blend-mode:multiply;
}
[data-theme="dark"] .spotlight{mix-blend-mode:screen;background:radial-gradient(circle,rgba(78,144,214,.075),transparent 62%)}

.layer{position:relative;z-index:2}

/* ---------- 4. LAYOUT ---------- */
.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gut)}
main > section:first-child{padding-top:calc(66px + clamp(30px,5vw,64px))}
.wrap-narrow{max-width:860px}
section{position:relative}
.sec{padding-block:clamp(54px,6.5vw,104px)}
.sec-tight{padding-block:clamp(38px,4.5vw,62px)}
.hr{height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent);border:0}

/* ---------- 5. TYPOGRAPHY ---------- */
.eyebrow{
  font-family:var(--font-mono);font-size:11px;font-weight:500;letter-spacing:.2em;
  text-transform:uppercase;color:var(--accent);display:inline-flex;align-items:center;gap:9px;
}
.eyebrow::before{
  content:"";width:22px;height:1px;background:currentColor;opacity:.55;
}
.eyebrow.bare::before{display:none}
h1,h2,h3,h4{font-weight:750;line-height:1.06;letter-spacing:-.028em;text-wrap:balance}
h1{font-size:clamp(40px,6.4vw,86px);line-height:1.0;letter-spacing:-.042em}
h2{font-size:clamp(30px,4.2vw,54px)}
h3{font-size:clamp(20px,2.2vw,27px);letter-spacing:-.02em}
h4{font-size:17px;letter-spacing:-.01em}
.display{font-size:clamp(46px,8vw,116px);line-height:.94;letter-spacing:-.05em;font-weight:780}
.lede{font-size:clamp(16px,1.55vw,20.5px);color:var(--text-dim);line-height:1.58;max-width:64ch}
.small{font-size:14.5px;color:var(--text-mute);line-height:1.66}
.tiny{font-size:12.5px;color:var(--mute-2)}
.mono{font-family:var(--font-mono);font-size:12px;letter-spacing:.13em;text-transform:uppercase}
.hl{color:var(--accent)}
.body p+p{margin-top:1.05em}
.body p{color:var(--text-dim)}

/* ---------- 6. HEADER ---------- */
.skip{position:absolute;left:-9999px;top:0;background:var(--accent);color:var(--accent-ink);padding:10px 16px;z-index:200}
.skip:focus{left:12px;top:12px}

.hdr{
  position:fixed;top:0;left:0;right:0;z-index:90;
  backdrop-filter:blur(18px) saturate(1.5);-webkit-backdrop-filter:blur(18px) saturate(1.5);
  background:color-mix(in srgb,var(--bg) 78%,transparent);
  border-bottom:1px solid transparent;transition:border-color .3s,background .3s;
}
.hdr.stuck{border-bottom-color:var(--line);background:color-mix(in srgb,var(--bg) 93%,transparent)}
.hdr-in{display:flex;align-items:center;gap:18px;height:66px}
.brand{display:flex;align-items:center;gap:11px;flex:none}
/* Brand mark: the real Nivākya logo, swapped for contrast between themes. */
.mark{display:grid;place-items:center;width:30px;height:30px;flex:none}
.mark img{width:100%;height:100%;object-fit:contain}
.mark .mk-dark{display:none}
[data-theme="dark"] .mark .mk-light{display:none}
[data-theme="dark"] .mark .mk-dark{display:block}
.brand .word{font-weight:780;font-size:19px;letter-spacing:.13em}
.brand small{display:block;font-family:var(--font-mono);font-size:8.5px;letter-spacing:.28em;color:var(--mute-2);margin-top:-3px}

.nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-item{position:relative}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:6px;padding:9px 13px;border-radius:var(--r-sm);
  font-size:14px;font-weight:560;color:var(--text-dim);white-space:nowrap;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:5px;height:1.5px;border-radius:2px;
  background:currentColor;transform:scaleX(0);transform-origin:left center;
  transition:transform .3s var(--ease);
}
.nav-link:hover{color:var(--text);background:var(--surface-2)}
.nav-link:hover::after,.nav-link[aria-current="page"]::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--accent)}
.nav-link .caret{width:8px;height:8px;opacity:.5;transition:transform .25s}
.nav-item:hover .caret{transform:rotate(180deg)}

.mega{
  position:absolute;top:calc(100% + 12px);left:50%;transform:translate(-50%,8px);
  width:min(760px,88vw);background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:22px;box-shadow:var(--sh-2);
  opacity:0;visibility:hidden;transition:.24s var(--ease);z-index:100;
}
.nav-item:hover .mega,.nav-item:focus-within .mega{opacity:1;visibility:visible;transform:translate(-50%,0)}
.mega-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:8px 22px}
.mega h5{font-family:var(--font-mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--mute-2);margin:8px 0 8px}
.mega a{display:block;padding:8px 10px;border-radius:var(--r-sm);transition:.16s}
.mega a:hover{background:var(--surface-2)}
.mega a b{display:block;font-size:14.5px;font-weight:600;color:var(--text)}
.mega a span{display:block;font-size:12.5px;color:var(--mute);line-height:1.45;margin-top:2px}

.hdr-actions{display:flex;align-items:center;gap:9px;margin-left:8px;flex:none}
.icon-btn{
  width:36px;height:36px;display:grid;place-items:center;border-radius:var(--r-sm);
  border:1px solid var(--line);color:var(--text-dim);
  transition:transform .22s var(--ease),border-color .22s,color .22s,background-color .22s;
}
.icon-btn:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft);transform:translateY(-1px)}
.icon-btn:active{transform:translateY(0) scale(.96)}
.burger{display:none}

/* --- responsive header: the desktop nav must never render on small screens --- */
@media(max-width:1120px){
  .nav{display:none}
  .burger{display:grid}
  .hdr-actions .btn-quiet{display:none}
}
@media(max-width:430px){
  .brand .word{font-size:17px}
  .brand small{display:none}
  .hdr-actions .btn-primary{padding:9px 13px;font-size:13px}
  .hdr-in{gap:10px}
}
.hdr-in,.brand,.hdr-actions{min-width:0}

.mdraw{
  position:fixed;inset:66px 0 0;z-index:88;background:var(--bg);
  padding:22px var(--gut) 40px;overflow-y:auto;
  transform:translateY(-8px);opacity:0;visibility:hidden;transition:.24s var(--ease);
  border-top:1px solid var(--line);
}
.mdraw.open{transform:none;opacity:1;visibility:visible}
.mdraw h5{font-family:var(--font-mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--mute-2);margin:20px 0 6px}
.mdraw a{display:block;padding:11px 0;font-size:16px;font-weight:560;border-bottom:1px solid var(--line-soft)}
.mdraw .btn{margin-top:20px;width:100%}

/* ---------- 7. BUTTONS / PILLS ---------- */
/* Hover motion is deliberate and shared: a light sweep on primary,
   a wash on ghost, a sliding rule on quiet. One language, not four effects. */
.btn{
  position:relative;overflow:hidden;isolation:isolate;
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:12px 20px;border-radius:var(--r-pill);font-size:14.5px;font-weight:620;
  border:1px solid transparent;white-space:nowrap;line-height:1;
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .22s,color .22s,background-color .22s;
}
.btn::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;transition:transform .58s var(--ease-out),opacity .3s}
.btn svg{width:15px;height:15px;flex:none;transition:transform .26s var(--ease)}
.btn:hover svg{transform:translateX(3px)}
.btn:active{transform:translateY(0) scale(.985);transition-duration:.08s}

.btn-primary{background:var(--accent);color:var(--accent-ink);box-shadow:var(--sh-glow)}
.btn-primary::before{background:linear-gradient(115deg,transparent 18%,rgba(255,255,255,.34) 46%,transparent 64%);transform:translateX(-140%)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-2),var(--sh-glow)}
.btn-primary:hover::before{transform:translateX(140%)}

.btn-ghost{border-color:var(--line-bright);color:var(--text)}
.btn-ghost::before{background:var(--accent-soft);transform:scaleX(0);transform-origin:left center}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn-ghost:hover::before{transform:scaleX(1)}

.btn-quiet{color:var(--text-dim)}
.btn-quiet::after{content:"";position:absolute;left:20px;right:20px;bottom:7px;height:1px;background:currentColor;transform:scaleX(0);transform-origin:left center;transition:transform .3s var(--ease)}
.btn-quiet:hover{color:var(--accent)}
.btn-quiet:hover::after{transform:scaleX(1)}

.btn-lg{padding:15px 26px;font-size:15.5px}
.btn-sm{padding:9px 15px;font-size:13.5px}
.btn-block{width:100%}

.pill{
  display:inline-flex;align-items:center;gap:8px;padding:6px 13px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--surface);font-family:var(--font-mono);
  font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--text-mute);
}
.pill.live{border-color:color-mix(in srgb,var(--aqua) 45%,transparent);color:var(--aqua)}
.pill.tint{border-color:color-mix(in srgb,var(--brand) 45%,transparent);color:var(--accent)}
.pill.coral{border-color:color-mix(in srgb,var(--coral) 45%,transparent);color:var(--coral)}
.dot{width:6px;height:6px;border-radius:50%;background:currentColor;flex:none;box-shadow:0 0 0 0 currentColor;animation:pulse 2.2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 color-mix(in srgb,currentColor 55%,transparent)}70%{box-shadow:0 0 0 8px transparent}100%{box-shadow:0 0 0 0 transparent}}

/* ---------- 8. CARDS ---------- */
.card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:26px;overflow:hidden;
  transition:transform .35s var(--ease),border-color .35s,background .35s;
}
.card::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,0%),rgba(27,79,138,.07),transparent 60%);
  opacity:0;transition:opacity .35s;
}
.card:hover{transform:translateY(-4px);border-color:var(--line-bright)}
.card:hover::after{opacity:1}
.card.flat{padding:20px;border-radius:var(--r-md)}
.card.tint{border-color:color-mix(in srgb,var(--brand) 34%,transparent)}
.card .idx{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.16em;color:var(--mute-2)}
.card h3{margin:14px 0 8px}
.card p{color:var(--text-dim);font-size:14.8px;line-height:1.6}

.grid{display:grid;gap:16px}
.g-2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.g-3{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.g-4{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.g-6{grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}

.split{display:grid;gap:clamp(26px,4vw,64px);grid-template-columns:repeat(auto-fit,minmax(330px,1fr));align-items:center}
.split>*{min-width:0}

/* ---------- 9. HERO ---------- */
.hero{padding-top:clamp(96px,13vw,168px);padding-bottom:clamp(48px,7vw,96px);position:relative}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:clamp(26px,4vw,58px);align-items:center}
.hero-grid>*{min-width:0}
@media(max-width:980px){.hero-grid{grid-template-columns:minmax(0,1fr)}}
.hero h1{margin:18px 0 20px}
.hero .cta-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:26px}
.hero .trustline{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:22px;font-size:13px;color:var(--text-mute)}
.hero .trustline span{display:inline-flex;align-items:center;gap:7px}
.tick{width:13px;height:13px;flex:none;color:var(--accent)}

/* signal scope */
.scope{
  position:relative;border:1px solid var(--line);border-radius:var(--r-xl);
  background:linear-gradient(160deg,var(--surface-2),var(--ink-900));
  padding:18px;box-shadow:var(--sh-2);overflow:hidden;
}
.scope::before{
  content:"";position:absolute;inset:0;background:var(--grad-scan);pointer-events:none;
}
.scope-top{display:flex;align-items:center;justify-content:space-between;gap:10px;padding-bottom:12px;border-bottom:1px solid var(--line-soft)}
.scope canvas{width:100%;height:132px;display:block;margin-top:14px}
.scope-live{display:flex;align-items:flex-end;gap:3px;height:26px}
.scope-live i{width:3px;background:var(--aqua);border-radius:2px;height:20%;animation:bars 1.05s var(--ease) infinite alternate}
.scope-live i:nth-child(2){animation-delay:-.18s;background:var(--brand)}
.scope-live i:nth-child(3){animation-delay:-.36s}
.scope-live i:nth-child(4){animation-delay:-.54s;background:var(--brand)}
.scope-live i:nth-child(5){animation-delay:-.72s}
@keyframes bars{to{height:100%}}

.xscript{margin-top:14px;display:grid;gap:9px}
.xline{
  display:grid;grid-template-columns:auto 1fr auto;gap:11px;align-items:baseline;
  padding:10px 13px;border-radius:var(--r-sm);background:var(--ink-900);border:1px solid var(--line-soft);
  font-size:14.2px;
}
.xline b{font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--mute-2)}
.xline.ai{border-color:color-mix(in srgb,var(--brand) 30%,transparent)}
.xline .ms{font-family:var(--font-mono);font-size:11px;color:var(--aqua)}

/* ---------- 10. LATENCY LENS ---------- */
.lens{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));margin-top:34px}
.stage{
  position:relative;border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--surface);padding:22px;transition:.3s var(--ease);
}
.stage.on{border-color:color-mix(in srgb,var(--brand) 42%,transparent);background:var(--surface-2)}
.stage .k{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.18em;color:var(--mute-2);text-transform:uppercase}
.stage .big{font-size:38px;font-weight:760;letter-spacing:-.04em;margin:8px 0 2px;font-variant-numeric:tabular-nums}
.stage .big em{font-style:normal;font-size:15px;color:var(--mute);margin-left:3px;font-weight:600}
.stage p{font-size:14.4px;color:var(--text-dim);margin-top:8px}
.stage .bar{height:3px;border-radius:2px;background:var(--ink-700);margin-top:16px;overflow:hidden}
.stage .bar i{display:block;height:100%;width:0;background:var(--grad-signal);transition:width 1.1s var(--ease-out)}
.stage.on .bar i{width:var(--w,70%)}
@media(max-width:760px){.lens{grid-template-columns:1fr}}

/* ---------- 11. HERO VOICEPRINT / GLYPH ---------- */
.vp{width:44px;height:44px;flex:none}
.vp-lg{width:96px;height:96px}

/* ---------- 12. HALOS (trust) ---------- */
.halos{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.halo{
  text-align:center;padding:26px 18px;border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--surface);transition:.3s var(--ease);
}
.halo:hover{border-color:var(--line-bright);transform:translateY(-3px)}
.halo .rings{width:84px;height:84px;margin:0 auto 14px}
.halo b{display:block;font-size:14.5px}
.halo span{font-size:12.5px;color:var(--mute)}

/* ---------- 13. METRICS ---------- */
.metrics{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;grid-template-columns:repeat(auto-fit,minmax(190px,1fr))}
.metric{background:var(--bg-elev);padding:26px 22px}
.metric .n{font-size:clamp(32px,3.8vw,50px);font-weight:780;letter-spacing:-.045em;font-variant-numeric:tabular-nums;line-height:1}
.metric .n .u{font-size:.5em;color:var(--accent);margin-left:2px}
.metric .l{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--mute-2);margin-top:10px}
.metric .note{font-size:13px;color:var(--text-mute);margin-top:6px}

/* ---------- 14. MARQUEE ---------- */
.marquee{overflow:hidden;position:relative;mask-image:linear-gradient(90deg,transparent,#000 9%,#000 91%,transparent)}
.marquee-track{display:flex;gap:56px;width:max-content;animation:slide 38s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
@keyframes slide{to{transform:translateX(-50%)}}
.logo-item{display:flex;align-items:center;gap:9px;opacity:.5;transition:.3s;white-space:nowrap}
.logo-item:hover{opacity:1}
.logo-item svg{width:20px;height:20px}

/* ---------- 15. TABS / TOGGLES ---------- */
.segs{display:inline-flex;gap:3px;padding:4px;border:1px solid var(--line);border-radius:var(--r-pill);background:var(--surface);flex-wrap:wrap}
.seg{padding:8px 16px;border-radius:var(--r-pill);font-size:13.5px;font-weight:600;color:var(--text-mute);transition:.2s}
.seg:hover{color:var(--text)}
.seg[aria-selected="true"]{background:var(--accent);color:var(--accent-ink)}
.panel{display:none}
.panel.on{display:block;animation:fade .4s var(--ease)}
@keyframes fade{from{opacity:0;transform:translateY(8px)}}

/* ---------- 16. ACCORDION ---------- */
.acc{border-top:1px solid var(--line)}
.acc details{border-bottom:1px solid var(--line)}
.acc summary{
  display:flex;justify-content:space-between;align-items:center;gap:18px;
  padding:20px 4px;cursor:pointer;font-weight:620;font-size:17px;list-style:none;
}
.acc summary::-webkit-details-marker{display:none}
.acc summary::after{content:"+";font-family:var(--font-mono);font-size:20px;color:var(--accent);transition:transform .25s}
.acc details[open] summary::after{transform:rotate(45deg)}
.acc .ans{padding:0 4px 22px;color:var(--text-dim);font-size:15px;max-width:78ch}

/* ---------- 17. PRICING ---------- */
.tiers{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));align-items:start}
.tier{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);padding:28px;display:flex;flex-direction:column;gap:16px}
.tier.hot{border-color:color-mix(in srgb,var(--brand) 50%,transparent);box-shadow:var(--sh-glow);background:linear-gradient(180deg,var(--surface-2),var(--surface))}
.tier .price{font-size:44px;font-weight:780;letter-spacing:-.045em;line-height:1}
.tier .price small{font-size:14px;font-weight:600;color:var(--mute);letter-spacing:0}
.tier ul{display:grid;gap:10px;font-size:14.4px;color:var(--text-dim)}
.tier li{display:flex;gap:10px;align-items:flex-start}
.tier li svg{width:15px;height:15px;color:var(--accent);flex:none;margin-top:4px}

/* ---------- 18. TABLE ---------- */
.tbl{font-size:14px}
.tbl th{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--mute-2);text-align:left;padding:12px 14px;border-bottom:1px solid var(--line)}
.tbl td{padding:13px 14px;border-bottom:1px solid var(--line-soft);color:var(--text-dim);vertical-align:top}
.tbl tr:hover td{background:var(--surface-2)}
.tbl .yes{color:var(--accent);font-weight:600}
.tbl .no{color:var(--mute-2)}
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface)}

/* ---------- 19. STEPS / TIMELINE ---------- */
.steps{display:grid;gap:0;counter-reset:s}
.step{display:grid;grid-template-columns:auto 1fr;gap:20px;padding:22px 0;border-bottom:1px solid var(--line-soft)}
.step .num{
  counter-increment:s;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  color:var(--accent);width:34px;height:34px;display:grid;place-items:center;
  border:1px solid color-mix(in srgb,var(--brand) 34%,transparent);border-radius:50%;
}
.step .num::before{content:counter(s,decimal-leading-zero)}
.step h4{margin-bottom:5px}
.step p{font-size:14.6px;color:var(--text-dim)}

/* ---------- 20. FOOTER ---------- */
.ftr{border-top:1px solid var(--line);background:var(--bg-elev);margin-top:40px;padding-bottom:calc(var(--rail-h) + 30px)}
.ftr-top{display:grid;gap:34px;grid-template-columns:minmax(240px,1.5fr) repeat(auto-fit,minmax(150px,1fr));padding:clamp(40px,5vw,64px) 0}
.ftr h5{font-family:var(--font-mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--mute-2);margin-bottom:14px}
.ftr a{display:block;font-size:14px;color:var(--text-dim);padding:5px 0;transition:.16s}
.ftr a:hover{color:var(--accent);transform:translateX(3px)}
.ftr-bot{display:flex;flex-wrap:wrap;gap:12px 22px;align-items:center;justify-content:space-between;padding:20px 0;border-top:1px solid var(--line-soft);font-size:13px;color:var(--mute-2)}
.ftr-social{display:flex;gap:8px}
.ftr-social a{width:34px;height:34px;display:grid;place-items:center;border:1px solid var(--line);border-radius:var(--r-sm);padding:0}
.ftr-social svg{width:15px;height:15px}

/* ---------- 21. SIGNAL RAIL (signature navigation) ---------- */
.rail{
  position:fixed;left:0;right:0;bottom:0;z-index:95;height:var(--rail-h);
  background:color-mix(in srgb,var(--ink-950) 88%,transparent);
  backdrop-filter:blur(20px) saturate(1.4);-webkit-backdrop-filter:blur(20px);
  border-top:1px solid var(--line);display:flex;align-items:center;gap:14px;padding:0 var(--gut);
}
.rail-btn{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--mute-2);padding:7px 10px;border-radius:var(--r-xs);transition:.18s;flex:none;
}
.rail-btn:hover,.rail-btn.on{color:var(--accent);background:var(--surface-2)}
.rail-scrub{flex:1;min-width:0;position:relative;height:var(--rail-h);display:flex;align-items:center;cursor:pointer}
.rail-scrub canvas{width:100%;height:100%;display:block}
.rail-peaks{position:absolute;inset:0;display:flex}
.rail-peak{
  flex:1;display:flex;align-items:flex-end;justify-content:center;padding-bottom:9px;
  font-family:var(--font-mono);font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--mute-2);transition:.2s;border-left:1px solid transparent;
}
.rail-peak:hover{color:var(--brand);border-left-color:var(--line)}
.rail-peak.on{color:var(--accent)}
.rail-peak span{opacity:0;transition:.2s;white-space:nowrap}
.rail-peak.on span,.rail-peak:hover span{opacity:1}
.rail-time{font-family:var(--font-mono);font-size:10.5px;color:var(--mute-2);flex:none;font-variant-numeric:tabular-nums}
@media(max-width:860px){
  .rail-peak span{display:none}
  .rail-time{display:none}
  :root{--rail-h:52px}
}

/* ---------- 22. SCROLL PROGRESS ---------- */
.beam{position:fixed;top:0;left:0;height:2px;z-index:99;background:var(--grad-signal);width:0;transition:width .12s linear}

/* ---------- 23. REVEAL ---------- */
.rv{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease-out),transform .7s var(--ease-out)}
.rv.in{opacity:1;transform:none}

/* ---------- 24. MISC ---------- */
.quote{border-left:2px solid var(--accent);padding-left:22px;max-width:76ch}
.quote p{font-size:clamp(17px,2vw,23px);line-height:1.48;color:var(--text);letter-spacing:-.015em}
.quote footer{margin-top:16px;font-size:13.5px;color:var(--mute)}
.chiprow{display:flex;flex-wrap:wrap;gap:8px}
.chip{padding:6px 12px;border-radius:var(--r-pill);border:1px solid var(--line);font-size:12.8px;color:var(--text-dim);background:var(--surface)}
.note-box{border:1px dashed var(--line-bright);border-radius:var(--r-md);padding:18px 20px;background:var(--surface);font-size:14.4px;color:var(--text-dim)}
.note-box b{color:var(--text)}
.kv{display:grid;grid-template-columns:auto 1fr;gap:8px 18px;font-size:14.4px}
.kv dt{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--mute-2);padding-top:4px}
.kv dd{color:var(--text-dim)}
.cta-band{border:1px solid var(--line);border-radius:var(--r-xl);background:linear-gradient(140deg,var(--surface-2),var(--ink-900));padding:clamp(32px,5vw,64px);position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;width:420px;height:420px;right:-90px;top:-160px;background:radial-gradient(circle,rgba(27,79,138,.09),transparent 65%);pointer-events:none}

/* ---------- 25. LOCAL-UK PRACTICE COMPONENTS ---------- */
/* Used by client demo pages: demo ribbon, NHS charge bands, regulatory
   register block, opening-hours table and a PECR-compliant cookie bar. */
.ribbon{background:var(--ink-900);border-bottom:1px solid var(--line)}
.ribbon .wrap{display:flex;gap:10px 18px;align-items:center;flex-wrap:wrap;font-size:13px;color:var(--text-mute)}
.ribbon b{color:var(--text);font-weight:640}
.ribbon a{color:var(--accent);font-weight:640}
.ribbon a:hover{text-decoration:underline;text-underline-offset:3px}
main > section.ribbon:first-child{padding-top:calc(66px + 13px);padding-bottom:13px}

.bands{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.band{border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);padding:24px;display:flex;flex-direction:column;gap:10px}
.band .n{font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--mute-2)}
.band .amt{font-size:38px;font-weight:770;letter-spacing:-.045em;line-height:1;font-variant-numeric:tabular-nums}
.band p{font-size:14px;color:var(--text-dim)}
.band.hi{border-color:color-mix(in srgb,var(--brand) 42%,transparent);background:linear-gradient(180deg,var(--surface-2),var(--surface))}
.band.hi .amt{color:var(--accent)}

.emerg{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.emerg .card{border-left:3px solid var(--line-bright)}
.emerg .card.urgent{border-left-color:var(--coral)}
.emerg .card.nhs{border-left-color:var(--aqua)}

.reg{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.reg div{border-left:2px solid var(--line-bright);padding-left:15px}
.reg b{display:block;font-size:13.8px;color:var(--text);margin-bottom:2px}
.reg span{font-size:13.2px;color:var(--text-mute);line-height:1.5}

.cookiebar{position:fixed;left:0;right:0;bottom:0;z-index:150;background:var(--surface);border-top:1px solid var(--line-bright);box-shadow:var(--sh-2);transform:translateY(112%)}
.cookiebar.show{transform:none;transition:transform .45s var(--ease)}
.cookiebar .cwrap{display:grid;gap:16px;grid-template-columns:minmax(0,1fr) auto;align-items:center;padding-block:18px}
.cookiebar p{font-size:13.5px;color:var(--text-dim);max-width:80ch}
.cookiebar .acts{display:flex;gap:10px;flex-wrap:wrap}
.cookiebar a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.cookiebar.hide{display:none}
@media(max-width:780px){.cookiebar .cwrap{grid-template-columns:1fr}}

.hours{width:100%;font-size:14.4px}
.hours td{padding:8px 0;border-bottom:1px solid var(--line-soft);color:var(--text-dim)}
.hours td:last-child{text-align:right;color:var(--text);font-variant-numeric:tabular-nums}
.hours tr.today td{color:var(--accent);font-weight:640}

.statusline{display:inline-flex;align-items:center;gap:9px;padding:8px 15px;border-radius:var(--r-pill);border:1px solid var(--line);background:var(--surface);font-size:13.4px;color:var(--text-dim)}
.statusline.open{border-color:color-mix(in srgb,var(--aqua) 42%,transparent);color:var(--aqua)}
.statusline.shut{border-color:color-mix(in srgb,var(--coral) 42%,transparent);color:var(--coral)}

/* ---------- 26. LIVE DEMO (front page) ---------- */
/* Ported from nivakya.pro: the visitor can trigger a real agent call from the
   page. Runs against DEMO_ENDPOINT when one is configured, and falls back to a
   labelled simulation in this static build. */
.demo-grid{display:grid;gap:clamp(20px,3vw,40px);grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);align-items:start}
.demo-grid>*{min-width:0}
@media(max-width:980px){.demo-grid{grid-template-columns:minmax(0,1fr)}}

.demo-tabs{display:inline-flex;gap:3px;padding:4px;border:1px solid var(--line);border-radius:var(--r-pill);background:var(--surface);margin-bottom:20px}
.demo-tabs button{padding:9px 18px;border-radius:var(--r-pill);font-size:13.8px;font-weight:620;color:var(--text-mute);transition:color .2s var(--ease),background-color .2s var(--ease)}
.demo-tabs button:hover{color:var(--text)}
.demo-tabs button[aria-selected="true"]{background:var(--accent);color:var(--accent-ink)}

.demo-form{display:grid;gap:14px;max-width:520px}
.ccline{display:grid;grid-template-columns:172px minmax(0,1fr);gap:10px}
@media(max-width:520px){.ccline{grid-template-columns:144px minmax(0,1fr)}}
.demo-consent{display:grid;grid-template-columns:auto minmax(0,1fr);gap:11px;align-items:start;font-size:13px;color:var(--text-mute);line-height:1.52}
.demo-consent input{width:17px;height:17px;margin-top:2px;accent-color:var(--accent);flex:none}
.demo-err{font-size:12.8px;color:var(--coral);min-height:1.15em}

.demo-state{display:flex;gap:11px;align-items:flex-start;padding:13px 15px;border-radius:var(--r-sm);border:1px solid var(--line);background:var(--surface);font-size:13.6px;color:var(--text-dim);min-height:54px;line-height:1.5}
.demo-state svg{width:15px;height:15px;flex:none;margin-top:3px}
.demo-state.busy{border-color:color-mix(in srgb,var(--amber) 42%,transparent);color:var(--amber)}
.demo-state.ok{border-color:color-mix(in srgb,var(--aqua) 42%,transparent);color:var(--aqua)}
.demo-state.err{border-color:color-mix(in srgb,var(--coral) 42%,transparent);color:var(--coral)}

.demo-facts{display:grid;gap:9px;font-size:13.3px;color:var(--text-mute);margin-top:18px}
.demo-facts span{display:flex;gap:9px;align-items:flex-start;line-height:1.5}
.demo-facts svg{width:14px;height:14px;flex:none;margin-top:3px;color:var(--accent)}

.videobox{position:relative;aspect-ratio:16/9;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:linear-gradient(150deg,var(--surface-2),var(--ink-900));display:grid;place-items:center;transition:border-color .3s}
.videobox.live{border-color:color-mix(in srgb,var(--aqua) 45%,transparent)}
.videobox .vpwrap{width:126px;height:126px;display:grid;place-items:center;transition:transform .5s var(--ease)}
.videobox.live .vpwrap{transform:scale(1.06)}
.videobox .vlabel{position:absolute;left:14px;bottom:14px;display:flex;gap:9px;align-items:center;flex-wrap:wrap}
.videobox .wave{position:absolute;left:0;right:0;bottom:0;height:54px;opacity:.75;pointer-events:none}