/* =========================================================
   TianceAI — premium dark theme
   Mesh-gradient backgrounds · glassmorphism · animated accents
   ========================================================= */

:root{
  /* base */
  --bg:#07070d;
  --bg-2:#0b0b17;
  --surface: rgba(255,255,255,0.04);
  --surface-2: rgba(255,255,255,0.06);
  --border: rgba(255,255,255,0.08);
  --border-2: rgba(255,255,255,0.14);

  /* ink */
  --ink:#f4f5ff;
  --ink-soft:#b9bccf;
  --muted:#7b7f9a;

  /* accents */
  --cyan:#00e5ff;
  --violet:#a78bfa;
  --magenta:#ec4899;
  --lime:#a3e635;

  /* gradients */
  --grad-cool: linear-gradient(135deg,#00e5ff 0%,#a78bfa 50%,#ec4899 100%);
  --grad-warm: linear-gradient(135deg,#ec4899 0%,#a78bfa 60%,#00e5ff 100%);
  --grad-glow: radial-gradient(closest-side, rgba(0,229,255,.35), transparent 70%);

  /* radii / shadows */
  --r-sm: 10px;
  --r:    14px;
  --r-lg: 22px;
  --shadow-sm: 0 4px 20px rgba(0,0,0,.25);
  --shadow-md: 0 18px 50px rgba(0,0,0,.35);
  --shadow-glow: 0 0 40px rgba(0,229,255,.25), 0 0 80px rgba(167,139,250,.15);

  --nav-h: 68px;
  --ease: cubic-bezier(.2,.7,.1,1);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{
  font-family:"Inter","SF Pro Display","Helvetica Neue",Arial,
              "PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
  font-feature-settings:"ss01","cv11";
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--cyan)}
.container{max-width:1200px;margin:0 auto;padding:0 28px}

/* -------- typography -------- */
h1,h2,h3,h4,h5{margin:0 0 .4em;letter-spacing:-0.025em;line-height:1.05;color:var(--ink)}
h1{font-size:clamp(48px,6.4vw,96px);font-weight:800;letter-spacing:-0.04em}
h2{font-size:clamp(32px,3.8vw,56px);font-weight:800;letter-spacing:-0.028em}
h3{font-size:clamp(18px,1.4vw,22px);font-weight:700;letter-spacing:-0.01em}
p{margin:0 0 1em;color:var(--ink-soft);font-size:16px}
p.lede,.section-lede{font-size:19px;color:var(--ink-soft);max-width:780px;line-height:1.6}
.accent{background:var(--grad-cool);-webkit-background-clip:text;background-clip:text;color:transparent}
.accent-warm{background:var(--grad-warm);-webkit-background-clip:text;background-clip:text;color:transparent}

/* -------- mesh gradient background layer -------- */
.mesh{
  position:fixed;inset:0;z-index:-2;pointer-events:none;overflow:hidden;
  background:var(--bg);
}
.mesh::before, .mesh::after, .mesh span{
  content:"";position:absolute;border-radius:50%;filter:blur(80px);opacity:.55;
}
.mesh::before{
  width:52vw;height:52vw;top:-18vw;left:-10vw;
  background:radial-gradient(circle,#1b2fff 0%,transparent 60%);
  animation:drift-a 22s var(--ease) infinite alternate;
}
.mesh::after{
  width:44vw;height:44vw;top:25vh;right:-14vw;
  background:radial-gradient(circle,#ff3df0 0%,transparent 60%);
  opacity:.4;
  animation:drift-b 28s var(--ease) infinite alternate;
}
.mesh span{
  width:48vw;height:48vw;bottom:-22vw;left:30vw;
  background:radial-gradient(circle,#00e5ff 0%,transparent 60%);
  opacity:.35;
  animation:drift-c 26s var(--ease) infinite alternate;
}
.mesh-grid{
  position:fixed;inset:0;z-index:-1;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: 56px 56px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 30%, #000 40%, transparent 100%);
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 30%, #000 40%, transparent 100%);
}

@keyframes drift-a{from{transform:translate(0,0) scale(1)}to{transform:translate(60px,80px) scale(1.1)}}
@keyframes drift-b{from{transform:translate(0,0) scale(1)}to{transform:translate(-80px,60px) scale(1.15)}}
@keyframes drift-c{from{transform:translate(0,0) scale(1)}to{transform:translate(40px,-60px) scale(1.05)}}

/* -------- buttons -------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:13px 22px;border-radius:999px;font-weight:600;font-size:15px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease);
  letter-spacing:-0.005em;
}
.btn-lg{padding:16px 28px;font-size:16px}
.btn-primary{
  color:#06070d;
  background:linear-gradient(135deg,#e6faff,#e3d4ff 60%,#ffd7ef);
  box-shadow:0 10px 36px rgba(0,229,255,.35), inset 0 0 0 1px rgba(255,255,255,.2);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 50px rgba(0,229,255,.45)}
.btn-ghost{
  color:var(--ink);background:var(--surface);
  border-color:var(--border-2);backdrop-filter:blur(14px);
}
.btn-ghost:hover{background:var(--surface-2);color:#fff;border-color:var(--cyan)}
.btn-glow{
  color:#06070d;background:var(--grad-cool);
  box-shadow:var(--shadow-glow);font-weight:700;
}
.btn-glow:hover{transform:translateY(-2px)}
.link-arrow{font-weight:600;color:var(--cyan)}
.link-arrow:hover{color:#fff;text-decoration:underline}
.link-muted{color:var(--muted);font-weight:500}
.link-muted:hover{color:var(--ink)}

/* -------- nav -------- */
.nav{
  position:sticky;top:0;z-index:50;
  backdrop-filter:blur(22px) saturate(180%);
  -webkit-backdrop-filter:blur(22px) saturate(180%);
  background:linear-gradient(180deg,rgba(7,7,13,.85),rgba(7,7,13,.55));
  border-bottom:1px solid var(--border);
}
.nav-inner{
  max-width:1280px;margin:0 auto;padding:14px 28px;
  display:flex;align-items:center;gap:22px;height:var(--nav-h);
}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;letter-spacing:-0.01em}
.logo b{font-weight:800;background:var(--grad-cool);-webkit-background-clip:text;background-clip:text;color:transparent}
.logo-dot{
  width:14px;height:14px;border-radius:50%;
  background:var(--grad-cool);
  box-shadow:0 0 0 3px rgba(0,229,255,.12), 0 0 22px rgba(0,229,255,.6);
  animation:pulse-dot 3s var(--ease) infinite;
}
@keyframes pulse-dot{50%{box-shadow:0 0 0 6px rgba(0,229,255,.18), 0 0 32px rgba(0,229,255,.8)}}
.nav-links{display:flex;gap:6px;margin-left:18px;flex:1}
.nav-links a{
  font-size:14.5px;color:var(--ink-soft);font-weight:500;
  padding:7px 12px;border-radius:999px;transition:all .2s var(--ease);
}
.nav-links a:hover{background:var(--surface);color:var(--ink)}
.nav-links a.active{background:var(--surface-2);color:#fff;border:1px solid var(--border-2)}
.nav-cta{display:flex;gap:12px;align-items:center}
.lang-btn{
  width:38px;height:38px;border-radius:50%;
  background:var(--surface);border:1px solid var(--border-2);
  color:var(--ink);font-weight:800;font-size:13px;letter-spacing:.02em;cursor:pointer;
  backdrop-filter:blur(14px);
  transition:all .2s var(--ease);
}
.lang-btn:hover{border-color:var(--cyan);color:var(--cyan);background:var(--surface-2)}

/* -------- hero -------- */
.hero{
  position:relative;
  padding:110px 0 130px;
  overflow:hidden;
}
.hero-grid{display:grid;grid-template-columns:1.1fr .95fr;gap:64px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  padding:7px 14px;border-radius:999px;
  background:var(--surface);border:1px solid var(--border);
  font-size:12.5px;font-weight:600;color:var(--ink-soft);letter-spacing:.02em;
  backdrop-filter:blur(14px);
  margin-bottom:28px;
}
.eyebrow .dotled{
  width:6px;height:6px;border-radius:50%;background:var(--lime);
  box-shadow:0 0 10px var(--lime);
}
.hero h1{margin-bottom:24px}
.hero .lede{max-width:620px;margin-bottom:34px}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:42px}
.hero-trust{display:flex;align-items:center;gap:18px;color:var(--muted);font-size:13px;flex-wrap:wrap}
.hero-trust > span:first-child{text-transform:uppercase;letter-spacing:.1em;font-size:11.5px}
.trust-logos{display:flex;gap:26px;opacity:.55;font-weight:700;letter-spacing:.12em;font-size:11.5px}

/* hero right visual — floating glass stack */
.hero-visual{position:relative;min-height:520px}
.hero-orb{
  position:absolute;inset:10% 0 0 0;width:100%;aspect-ratio:1;
  border-radius:50%;
  background:conic-gradient(from 230deg, #00e5ff, #a78bfa, #ec4899, #00e5ff);
  filter:blur(60px);opacity:.45;
  animation:spin-slow 28s linear infinite;
}
@keyframes spin-slow{to{transform:rotate(360deg)}}

.panel{
  position:absolute;
  background:rgba(16,17,30,.55);
  border:1px solid var(--border-2);
  border-radius:18px;
  padding:18px;
  backdrop-filter:blur(22px) saturate(160%);
  -webkit-backdrop-filter:blur(22px) saturate(160%);
  box-shadow:var(--shadow-md);
  animation:float 8s ease-in-out infinite;
}
.panel .label{
  display:flex;align-items:center;gap:8px;
  font-size:11px;font-weight:700;color:var(--ink-soft);
  letter-spacing:.12em;text-transform:uppercase;margin-bottom:10px;
}
.panel .label .dot{width:8px;height:8px;border-radius:50%;background:var(--lime);box-shadow:0 0 10px var(--lime)}

.panel-1{top:0;left:0;width:58%;animation-delay:-1s}
.panel-2{top:26%;right:0;width:46%;animation-delay:-3s}
.panel-3{bottom:0;left:10%;width:66%;animation-delay:-5s}

@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

.evlog{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12px;color:var(--ink-soft);line-height:1.7}
.evlog .t{color:var(--muted)}
.evlog .ok{color:var(--lime)}
.evlog .bad{color:#fb7185}
.evlog .warn{color:#fbbf24}

/* donut (SVG) */
.donut{display:flex;align-items:center;gap:14px}
.donut svg{width:72px;height:72px}
.donut .num{font-size:26px;font-weight:800;background:var(--grad-cool);-webkit-background-clip:text;color:transparent}
.donut .cap{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.1em}

/* meter bar */
.metric{display:grid;grid-template-columns:90px 1fr 36px;align-items:center;gap:10px;font-size:12px;margin-top:8px}
.metric .k{color:var(--muted);text-transform:uppercase;letter-spacing:.08em;font-size:10.5px}
.metric .bar{height:6px;border-radius:999px;background:rgba(255,255,255,.06);overflow:hidden}
.metric .bar > i{display:block;height:100%;border-radius:999px;background:var(--grad-cool)}
.metric .v{text-align:right;color:var(--ink-soft);font-variant-numeric:tabular-nums}

/* -------- sections -------- */
.section{padding:110px 0;position:relative}
.section-dark{background:linear-gradient(180deg,rgba(255,255,255,0),rgba(255,255,255,0.02))}
.section-head{margin-bottom:48px;max-width:840px}
.pill{
  display:inline-block;padding:6px 12px;border-radius:999px;
  background:var(--surface);border:1px solid var(--border);
  font-size:12px;font-weight:700;color:var(--ink-soft);letter-spacing:.03em;
}
.pill.brand{
  background:linear-gradient(135deg,rgba(0,229,255,.14),rgba(167,139,250,.14));
  border-color:rgba(0,229,255,.4);color:#d2f7ff;
}

/* problem stats */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:40px}
.stat{
  padding:32px;border-radius:var(--r-lg);
  background:var(--surface);border:1px solid var(--border);backdrop-filter:blur(10px);
  transition:transform .3s var(--ease), border-color .3s var(--ease);
}
.stat:hover{transform:translateY(-4px);border-color:var(--border-2)}
.stat-num{font-size:56px;font-weight:800;letter-spacing:-0.04em;
  background:var(--grad-cool);-webkit-background-clip:text;color:transparent;line-height:1;margin-bottom:12px}
.stat-text{color:var(--ink);font-weight:600;margin-bottom:8px;font-size:15.5px}
.stat-src{color:var(--muted);font-size:13px}

/* cta strip */
.cta-strip{
  position:relative;overflow:hidden;
  padding:70px 0;
  background:linear-gradient(120deg,rgba(0,229,255,.12),rgba(167,139,250,.12),rgba(236,72,153,.12));
  border-top:1px solid var(--border);border-bottom:1px solid var(--border);
}
.cta-strip h3{font-size:30px;margin-bottom:6px;color:#fff}
.cta-strip p{color:var(--ink-soft);margin:0}
.cta-strip-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-strip-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap}

/* features — pillar cards */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.feature-card{
  position:relative;
  padding:28px;border-radius:var(--r-lg);
  background:var(--surface);border:1px solid var(--border);
  backdrop-filter:blur(10px);
  transition:transform .3s var(--ease), border-color .3s var(--ease), background .3s var(--ease);
  overflow:hidden;
  display:block;color:inherit;
}
.feature-card::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:0;
  background:radial-gradient(600px circle at var(--mx,50%) var(--my,0%), rgba(0,229,255,.18), transparent 50%);
  transition:opacity .3s var(--ease);
}
.feature-card:hover{transform:translateY(-6px);border-color:var(--border-2);background:var(--surface-2)}
.feature-card:hover::before{opacity:1}
.f-icon{
  width:48px;height:48px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:var(--grad-cool);color:#000;
  font-size:22px;font-weight:800;margin-bottom:18px;
  box-shadow:0 10px 30px rgba(0,229,255,.3);
}
.feature-card h3{margin-bottom:10px}
.feature-card p{font-size:14.5px;margin:0;color:var(--ink-soft)}
.feature-card .link-arrow{display:inline-block;margin-top:14px;font-size:14px}

/* why */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.why-item{
  padding:30px;border-radius:var(--r-lg);background:var(--surface);
  border:1px solid var(--border);backdrop-filter:blur(10px);
}
.why-num{font-size:12px;font-weight:800;letter-spacing:.18em;color:var(--cyan);margin-bottom:10px;text-transform:uppercase}

/* surfaces */
.surfaces-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.surface-block{margin-top:28px}
.surface-block h4{
  font-size:12px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;
  color:var(--cyan);margin-bottom:10px;
}
.surface-block ul{margin:0;padding-left:18px;color:var(--ink-soft)}
.surface-block li{margin-bottom:7px}

.hex-wrap{display:flex;justify-content:center;perspective:1000px}
.hex-ring{
  position:relative;width:460px;height:460px;max-width:90vw;max-height:90vw;
  border-radius:50%;
  background:conic-gradient(from 0deg,
    rgba(0,229,255,.12),rgba(167,139,250,.08),rgba(236,72,153,.12),rgba(0,229,255,.12));
  border:1px dashed rgba(255,255,255,.08);
  animation:slow-tilt 18s ease-in-out infinite;
}
@keyframes slow-tilt{0%,100%{transform:rotateX(6deg) rotateY(0)}50%{transform:rotateX(6deg) rotateY(10deg)}}
.hex{
  position:absolute;padding:12px 18px;border-radius:14px;
  background:var(--surface-2);border:1px solid var(--border-2);
  backdrop-filter:blur(14px);box-shadow:var(--shadow-md);
  font-weight:700;font-size:14px;
}
.hex.h1{top:-6px;left:50%;transform:translateX(-50%)}
.hex.h2{top:22%;right:-4%}
.hex.h3{bottom:22%;right:-4%}
.hex.h4{bottom:-6px;left:50%;transform:translateX(-50%)}
.hex.h5{bottom:22%;left:-4%}
.hex.h6{top:22%;left:-4%}
.hex-center{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:160px;height:160px;border-radius:50%;
  background:var(--grad-cool);color:#000;
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-weight:800;letter-spacing:-0.01em;line-height:1.1;
  box-shadow:0 30px 80px rgba(0,229,255,.4);
}

/* recognition */
.recognition{padding:70px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.rec-label{text-align:center;color:var(--muted);font-size:11.5px;letter-spacing:.15em;text-transform:uppercase;margin-bottom:22px}
.rec-logos{
  display:flex;justify-content:space-around;flex-wrap:wrap;gap:30px;
  color:var(--muted);font-weight:800;letter-spacing:.12em;font-size:14px;opacity:.55;
}
.rec-logos span{transition:color .2s var(--ease),opacity .2s var(--ease)}
.rec-logos span:hover{color:var(--ink);opacity:1}

/* role cards */
.role-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.role-card{
  padding:34px;border-radius:var(--r-lg);
  background:var(--surface);border:1px solid var(--border);backdrop-filter:blur(10px);
  transition:transform .3s var(--ease),border-color .3s var(--ease);
}
.role-card:hover{transform:translateY(-6px);border-color:var(--border-2)}
.avatar{
  width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  color:#000;font-weight:800;font-size:22px;margin-bottom:18px;
}
.av-1{background:linear-gradient(135deg,#00e5ff,#a78bfa)}
.av-2{background:linear-gradient(135deg,#a78bfa,#ec4899)}
.av-3{background:linear-gradient(135deg,#ec4899,#00e5ff)}
.role-card p{font-style:italic;color:var(--ink-soft)}
.role-tag{
  display:inline-block;margin-top:12px;padding:6px 10px;border-radius:999px;
  background:var(--surface);border:1px solid var(--border);font-size:11.5px;color:var(--muted);font-weight:600;
}

/* final cta */
.final-cta{
  padding:140px 0;text-align:center;position:relative;
  background:
    radial-gradient(900px 420px at 20% 20%, rgba(0,229,255,.14), transparent 60%),
    radial-gradient(700px 400px at 80% 80%, rgba(236,72,153,.14), transparent 60%);
}
.final-cta h2{font-size:clamp(38px,4.6vw,68px)}
.final-cta p{color:var(--ink-soft);max-width:680px;margin:0 auto 30px}
.final-links{margin-top:24px;color:var(--muted);font-size:14px}
.final-links a{color:var(--cyan);font-weight:600}
.final-links span{margin:0 10px;opacity:.4}

/* footer */
.footer{background:#05060b;border-top:1px solid var(--border);color:#9097b4;padding:72px 0 34px}
.footer h5{color:#fff;font-size:13px;margin-bottom:14px;letter-spacing:.04em}
.foot-col a{display:block;color:#8a90ab;padding:5px 0;font-size:14px}
.foot-col a:hover{color:var(--cyan)}
.footer-grid{
  display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1fr;gap:28px;
  padding-bottom:40px;border-bottom:1px solid var(--border);
}
.foot-brand p{color:#8a90ab;max-width:320px;font-size:14px;margin-top:14px}
.logo-light{color:#fff}
.socials{display:flex;gap:10px;margin-top:14px}
.socials a{
  width:36px;height:36px;border-radius:50%;background:var(--surface);
  border:1px solid var(--border);
  display:inline-flex;align-items:center;justify-content:center;
  color:#fff;font-weight:700;font-size:13px;
}
.socials a:hover{background:var(--surface-2);border-color:var(--cyan);color:var(--cyan)}
.foot-bottom{display:flex;justify-content:space-between;color:#595f7b;font-size:13px;padding-top:22px;flex-wrap:wrap;gap:10px}

/* =========================================================
   Deep-dive page styles
   ========================================================= */
.product-hero{
  padding:110px 0 70px;
  border-bottom:1px solid var(--border);
}
.product-hero .crumb{
  color:var(--muted);font-size:13px;letter-spacing:.04em;margin-bottom:14px;
}
.product-hero .crumb a{color:var(--cyan);font-weight:600}
.product-hero .pill-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}

.subnav{
  position:sticky;top:var(--nav-h);z-index:20;
  background:rgba(7,7,13,.8);
  backdrop-filter:blur(22px) saturate(160%);
  border-bottom:1px solid var(--border);
}
.subnav-inner{
  max-width:1200px;margin:0 auto;padding:14px 28px;display:flex;gap:20px;flex-wrap:wrap;
  font-size:14px;
}
.subnav a{color:var(--ink-soft);font-weight:600}
.subnav a:hover{color:var(--cyan)}

.section-alt{background:linear-gradient(180deg,rgba(255,255,255,0.01),rgba(255,255,255,0.03))}

.two-col{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.bullets{margin:0;padding:0;list-style:none}
.bullets li{
  position:relative;padding:11px 0 11px 30px;border-bottom:1px dashed var(--border);color:var(--ink-soft);
}
.bullets li:last-child{border-bottom:none}
.bullets li::before{
  content:"";position:absolute;left:0;top:18px;width:16px;height:16px;border-radius:5px;
  background:var(--grad-cool);box-shadow:0 4px 14px rgba(0,229,255,.35);
}

.card-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card-grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.info-card{
  padding:24px;border-radius:var(--r);
  background:var(--surface);border:1px solid var(--border);backdrop-filter:blur(10px);
  transition:transform .25s var(--ease),border-color .25s var(--ease);
}
.info-card:hover{transform:translateY(-3px);border-color:var(--border-2)}
.info-card .tag{
  display:inline-block;font-size:10.5px;font-weight:800;letter-spacing:.12em;color:var(--cyan);
  text-transform:uppercase;margin-bottom:10px;
}
.info-card h4{font-size:16.5px;margin-bottom:8px}
.info-card p{font-size:14px;margin:0;color:var(--ink-soft)}

/* surface tiles */
.surface-diag{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.surface-diag .tile{
  position:relative;padding:20px;border-radius:var(--r);
  background:var(--surface);border:1px solid var(--border);backdrop-filter:blur(10px);
}
.surface-diag .tile:hover{border-color:var(--border-2);transform:translateY(-3px)}
.surface-diag .ico{
  width:36px;height:36px;border-radius:10px;background:var(--grad-cool);color:#000;
  display:flex;align-items:center;justify-content:center;font-weight:800;margin-bottom:10px;
  box-shadow:0 6px 20px rgba(0,229,255,.25);
}
.surface-diag .tile strong{display:block;margin-bottom:4px}
.surface-diag .tile span{font-size:13px;color:var(--muted)}

/* matrix table */
.matrix{
  width:100%;border-collapse:separate;border-spacing:0;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r);overflow:hidden;backdrop-filter:blur(10px);
}
.matrix th,.matrix td{padding:14px 16px;text-align:left;font-size:14px;border-bottom:1px solid var(--border);color:var(--ink-soft)}
.matrix th{background:rgba(255,255,255,.02);font-weight:700;color:var(--ink);letter-spacing:.04em;font-size:12px;text-transform:uppercase}
.matrix tr:last-child td{border-bottom:none}
.sev{display:inline-block;padding:3px 10px;border-radius:999px;font-size:11.5px;font-weight:800;letter-spacing:.02em}
.sev-c{background:rgba(251,113,133,.15);color:#fb7185}
.sev-h{background:rgba(251,191,36,.15);color:#fbbf24}
.sev-m{background:rgba(56,189,248,.15);color:#38bdf8}
.sev-l{background:rgba(163,230,53,.15);color:var(--lime)}

/* flow steps */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;counter-reset:step}
.flow .step{
  padding:22px;border-radius:var(--r);background:var(--surface);border:1px solid var(--border);backdrop-filter:blur(10px);
  position:relative;
}
.flow .step::before{
  counter-increment:step;content:"0" counter(step);
  display:inline-block;font-size:11.5px;font-weight:800;letter-spacing:.14em;color:var(--cyan);margin-bottom:8px;
}
.flow .step h4{font-size:16px;margin-bottom:6px}
.flow .step p{font-size:13.5px;margin:0;color:var(--ink-soft)}

/* compliance cards */
.compliance{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.comp-card{
  padding:22px;border-radius:var(--r);background:var(--surface);border:1px solid var(--border);backdrop-filter:blur(10px);
}
.comp-card .badge{
  display:inline-block;padding:3px 10px;border-radius:7px;background:var(--grad-cool);color:#000;
  font-size:11px;font-weight:800;letter-spacing:.06em;margin-bottom:10px;
}
.comp-card ul{margin:10px 0 0 18px;padding:0;color:var(--ink-soft);font-size:13.5px}
.comp-card li{margin:4px 0}

/* code snippet */
.snippet{
  background:#05060f;color:#dfe7ff;border-radius:var(--r);padding:22px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;line-height:1.7;
  overflow:auto;border:1px solid var(--border-2);box-shadow:var(--shadow-md);
}
.snippet .k{color:#8ad3ff}
.snippet .s{color:#a7f3d0}
.snippet .c{color:#7b7f9a}

.band{
  padding:86px 0;text-align:center;position:relative;overflow:hidden;
  background:linear-gradient(135deg,rgba(0,229,255,.14),rgba(167,139,250,.14),rgba(236,72,153,.14));
  border-top:1px solid var(--border);border-bottom:1px solid var(--border);
}

/* =========================================================
   Pricing page
   ========================================================= */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:30px}
.price-card{
  position:relative;overflow:hidden;
  padding:36px;border-radius:var(--r-lg);
  background:var(--surface);border:1px solid var(--border);backdrop-filter:blur(14px);
  transition:transform .3s var(--ease),border-color .3s var(--ease);
}
.price-card:hover{transform:translateY(-6px);border-color:var(--border-2)}
.price-card.highlight{
  border-color:rgba(0,229,255,.5);
  background:linear-gradient(160deg,rgba(0,229,255,.08),rgba(167,139,250,.08));
  box-shadow:0 24px 90px rgba(0,229,255,.15);
}
.price-card.highlight::before{
  content:"Most popular";position:absolute;top:18px;right:18px;
  padding:4px 10px;border-radius:999px;background:var(--grad-cool);color:#000;font-size:11px;font-weight:800;letter-spacing:.05em;
}
.price-name{font-size:14px;text-transform:uppercase;letter-spacing:.12em;color:var(--cyan);font-weight:800;margin-bottom:14px}
.price-amt{font-size:60px;font-weight:800;letter-spacing:-0.04em;line-height:1;margin-bottom:4px}
.price-amt .cur{font-size:24px;color:var(--muted);vertical-align:top;margin-right:4px}
.price-per{color:var(--muted);font-size:14px;margin-bottom:20px}
.price-feat{margin:18px 0 26px;padding:0;list-style:none;color:var(--ink-soft);font-size:14.5px}
.price-feat li{padding:7px 0;display:flex;gap:10px;align-items:flex-start;border-bottom:1px dashed var(--border)}
.price-feat li:last-child{border-bottom:none}
.price-feat li::before{content:"✓";color:var(--cyan);font-weight:800;margin-right:0}
.price-feat li.n::before{content:"—";color:var(--muted)}

/* =========================================================
   Playground page
   ========================================================= */
.play-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:24px}
.play-panel{
  padding:24px;border-radius:var(--r-lg);background:var(--surface);
  border:1px solid var(--border);backdrop-filter:blur(14px);
}
.play-panel h4{margin-bottom:12px;font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:.12em}
.play-input textarea{
  width:100%;min-height:140px;padding:14px;border-radius:var(--r);
  background:rgba(0,0,0,.3);color:var(--ink);border:1px solid var(--border);
  font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13.5px;resize:vertical;outline:none;
}
.play-input textarea:focus{border-color:var(--cyan)}
.preset-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.preset{
  font-size:12px;padding:6px 10px;border-radius:999px;border:1px solid var(--border);
  background:var(--surface);color:var(--ink-soft);cursor:pointer;
  transition:all .2s var(--ease);
}
.preset:hover{border-color:var(--cyan);color:var(--cyan)}
.play-output{min-height:220px}
.finding{
  display:grid;grid-template-columns:140px 80px 1fr;gap:12px;align-items:center;
  padding:11px 0;border-bottom:1px dashed var(--border);font-size:13.5px;
}
.finding:last-child{border-bottom:none}
.finding .det{font-weight:600}
.finding .msg{color:var(--ink-soft);font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;word-break:break-word}
.verdict{
  margin-top:14px;padding:14px 16px;border-radius:var(--r);
  font-weight:700;font-size:14px;
}
.verdict.allow{background:rgba(163,230,53,.12);color:var(--lime);border:1px solid rgba(163,230,53,.3)}
.verdict.redact{background:rgba(251,191,36,.12);color:#fbbf24;border:1px solid rgba(251,191,36,.3)}
.verdict.block{background:rgba(251,113,133,.12);color:#fb7185;border:1px solid rgba(251,113,133,.3)}

/* scroll-reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.visible{opacity:1;transform:translateY(0)}

/* responsive */
@media (max-width:960px){
  .hero-grid,.surfaces-grid,.two-col{grid-template-columns:1fr}
  .hero-visual{order:-1;min-height:420px}
  .stats,.feature-grid,.why-grid,.role-grid,.pricing-grid,
  .card-grid-3,.surface-diag,.flow,.compliance,.play-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .feature-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
}
@media (max-width:620px){
  .stats,.feature-grid,.why-grid,.role-grid,.pricing-grid,
  .card-grid-3,.surface-diag,.flow,.compliance,.play-grid,.footer-grid{grid-template-columns:1fr}
  h1{font-size:44px}
  .cta-strip-inner{flex-direction:column;align-items:flex-start}
}