:root{
  --bg:#F3F0FF;--text:#1F1B3A;--text-2:#635F82;--text-2-rgb:99,95,130;
  --accent:#4F46E5;--accent-hover:#4338CA;--accent-soft:#EEF2FF;--accent-soft-2:#E0E7FF;--accent-2:#8B5CF6;
  --success:#10B981;--danger:#EF4444;
  --tint-rgb:255,255,255;
  --glass-bg:rgba(var(--tint-rgb),.5);--glass-bg-strong:rgba(var(--tint-rgb),.62);
  --glass-border:rgba(255,255,255,.65);--glass-blur:22px;
  --code-bg:rgba(31,27,58,.05);
  --s-1:4px;--s-2:8px;--s-3:16px;--s-4:24px;--s-5:32px;--s-6:40px;--s-7:48px;--s-8:64px;
  --r-sm:8px;--r-md:10px;--r-lg:15px;--r-xl:18px;
  --shadow-xs:0 1px 2px rgba(31,27,58,.05);
  --shadow-md:0 20px 48px -16px rgba(76,29,149,.22),0 4px 12px -4px rgba(31,27,58,.08);
  --shadow-glow:0 0 0 1px rgba(255,255,255,.5) inset,0 8px 32px -8px rgba(124,111,240,.35);
  --font-ui:'Inter',system-ui,-apple-system,sans-serif;
  --font-mono:ui-monospace,'SF Mono',Menlo,Consolas,monospace;
}
:root[data-theme="dark"]{
  --bg:#111017;--text:#EDEBFA;--text-2:#9C97BE;--text-2-rgb:156,151,190;
  --accent:#818CF8;--accent-hover:#A5B4FC;--accent-soft:rgba(129,140,248,.18);--accent-soft-2:rgba(139,92,246,.22);--accent-2:#A78BFA;
  --success:#34D399;--danger:#F87171;
  --tint-rgb:38,34,58;--glass-border:rgba(255,255,255,.09);
  --code-bg:rgba(255,255,255,.06);
  --shadow-xs:0 1px 2px rgba(0,0,0,.35);
  --shadow-md:0 20px 48px -16px rgba(0,0,0,.6),0 4px 12px -4px rgba(0,0,0,.4);
  --shadow-glow:0 0 0 1px rgba(255,255,255,.07) inset,0 8px 32px -8px rgba(99,102,241,.3);
}

*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--text);font-family:var(--font-ui);font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;background:var(--bg);position:relative;overflow-x:hidden;
  transition:background-color .2s ease,color .2s ease;
}
body::before{
  content:'';position:fixed;inset:-12%;z-index:-1;pointer-events:none;
  background:
    radial-gradient(38% 32% at 12% 8%,rgba(129,140,248,.55),transparent 70%),
    radial-gradient(34% 30% at 88% 4%,rgba(244,114,182,.42),transparent 70%),
    radial-gradient(36% 34% at 96% 88%,rgba(56,189,248,.4),transparent 70%),
    radial-gradient(40% 36% at 4% 96%,rgba(167,139,250,.4),transparent 70%),
    linear-gradient(180deg,#F5F3FF 0%,#EEF2FF 45%,#F0F9FF 100%);
  filter:blur(60px) saturate(150%);
  animation:drift 28s ease-in-out infinite alternate;
}
:root[data-theme="dark"] body::before{
  background:
    radial-gradient(38% 32% at 12% 8%,rgba(99,102,241,.35),transparent 70%),
    radial-gradient(34% 30% at 88% 4%,rgba(190,70,140,.22),transparent 70%),
    radial-gradient(36% 34% at 96% 88%,rgba(37,130,168,.28),transparent 70%),
    radial-gradient(40% 36% at 4% 96%,rgba(109,80,200,.28),transparent 70%),
    linear-gradient(180deg,#0E0C16 0%,#100E1C 45%,#0C1220 100%);
}
@keyframes drift{0%{transform:translate3d(0,0,0) scale(1)}100%{transform:translate3d(-3%,2.5%,0) scale(1.06)}}
@media (prefers-reduced-motion: reduce){*,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}}
a{color:inherit;text-decoration:none}
::selection{background:var(--accent-soft-2);color:var(--accent-hover)}
*:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(79,70,229,.5)}
.icon{width:18px;height:18px;flex:none}
code{font-family:var(--font-mono);background:var(--code-bg);padding:2px 6px;border-radius:6px;font-size:.9em}

.wrap{max-width:1080px;margin:0 auto;padding:0 24px}

/* ---------- Nav ---------- */
.nav{
  position:sticky;top:0;z-index:50;padding:16px 0;
  background:rgba(var(--tint-rgb),.5);-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(180%);backdrop-filter:blur(var(--glass-blur)) saturate(180%);
  border-bottom:1px solid var(--glass-border);
}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px}
.wordmark{font-weight:600;font-size:18px;letter-spacing:-.01em;margin:0;display:flex;align-items:center;gap:10px;color:var(--text)}
.bolt{
  width:30px;height:30px;border-radius:var(--r-sm);background:var(--accent);color:#fff;
  display:flex;align-items:center;justify-content:center;flex:none;box-shadow:0 4px 14px -3px rgba(79,70,229,.55);
}
.bolt .icon{width:17px;height:17px}
.nav-actions{display:flex;align-items:center;gap:10px}
.btn-icon{
  background:rgba(var(--tint-rgb),.5);border:1px solid var(--glass-border);border-radius:var(--r-md);
  width:38px;height:38px;flex:none;padding:0;cursor:pointer;color:var(--text-2);
  display:flex;align-items:center;justify-content:center;transition:background-color .15s ease,color .15s ease;
}
.btn-icon:hover{background:rgba(var(--tint-rgb),.8);color:var(--text)}
.btn-icon .icon-sun{display:none}
:root[data-theme="dark"] .btn-icon .icon-sun{display:block}
:root[data-theme="dark"] .btn-icon .icon-moon{display:none}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 20px;border-radius:var(--r-md);font-size:14.5px;font-weight:600;
  cursor:pointer;border:0;font-family:inherit;transition:filter .15s ease,transform .1s ease,box-shadow .15s ease,background-color .15s ease;
}
.btn:active{transform:scale(.97)}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;box-shadow:0 8px 20px -6px rgba(79,70,229,.5)}
.btn-primary:hover{filter:brightness(1.06)}
.btn-ghost{background:rgba(var(--tint-rgb),.5);border:1px solid var(--glass-border);color:var(--text)}
.btn-ghost:hover{background:rgba(var(--tint-rgb),.8)}
.btn-lg{height:52px;padding:0 28px;font-size:15.5px;border-radius:var(--r-lg)}

/* ---------- Hero ---------- */
.hero{padding:84px 0 8px}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;
  background:rgba(var(--tint-rgb),.6);border:1px solid var(--glass-border);
  font-size:12.5px;font-weight:600;color:var(--text-2);margin-bottom:22px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--success)}
.hero h1{
  font-size:clamp(30px,4.2vw,46px);line-height:1.15;letter-spacing:-.02em;font-weight:700;margin:0 0 20px;
}
.hero h1 .grad{background:linear-gradient(135deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:16.5px;color:var(--text-2);max-width:46ch;margin:0 0 30px;line-height:1.65}
.cta-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:14px}
.hero .fine{font-size:13px;color:var(--text-2)}
.hero .fine .ok{color:var(--success);font-weight:700}

/* ---------- Chat mockup ---------- */
.mock{
  background:var(--glass-bg-strong);border:1px solid var(--glass-border);border-radius:var(--r-xl);
  box-shadow:var(--shadow-md),var(--shadow-glow);
  -webkit-backdrop-filter:blur(var(--glass-blur)) saturate(180%);backdrop-filter:blur(var(--glass-blur)) saturate(180%);
  overflow:hidden;
}
.mock-head{
  display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--glass-border);
  font-size:12px;color:var(--text-2);font-weight:600;
}
.mock-head .dot{width:8px;height:8px;border-radius:50%;background:var(--danger);opacity:.55}
.mock-head .dot:nth-child(2){background:#F59E0B}
.mock-head .dot:nth-child(3){background:var(--success)}
.mock-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:14px;min-height:230px}
.mock-msg{display:flex;gap:10px;max-width:92%}
.mock-msg.user{margin-left:auto;flex-direction:row-reverse}
.mock-avatar{
  width:26px;height:26px;border-radius:50%;flex:none;display:flex;align-items:center;justify-content:center;
  font-size:11px;font-weight:700;
}
.mock-msg.user .mock-avatar{background:rgba(var(--tint-rgb),.7);color:var(--text-2)}
.mock-msg.agent .mock-avatar{background:linear-gradient(135deg,var(--accent-soft),var(--accent-soft-2));color:var(--accent)}
.mock-bubble{
  background:rgba(var(--tint-rgb),.6);border:1px solid var(--glass-border);border-radius:12px;
  padding:10px 13px;font-size:13.5px;color:var(--text);
}
.mock-msg.agent .mock-bubble{background:transparent;border:0;padding:2px 0}
.mock-tool{
  display:flex;align-items:center;gap:8px;background:rgba(var(--tint-rgb),.42);border:1px solid var(--glass-border);
  border-radius:8px;padding:7px 11px;font-size:12px;font-family:var(--font-mono);color:var(--text-2);max-width:92%;
}
.mock-tool .name{color:var(--accent);font-weight:600}
.mock-tool .ok-dot{width:6px;height:6px;border-radius:50%;background:var(--success);flex:none;margin-left:auto}
.mock-link{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-weight:600;font-size:13px}
.typing-cursor{display:inline-block;width:2px;height:14px;background:var(--accent);vertical-align:-2px;margin-left:2px;animation:blink 1s step-start infinite}
@keyframes blink{50%{opacity:0}}

/* ---------- Sections ---------- */
section{padding:64px 0}
.section-head{text-align:center;max-width:600px;margin:0 auto 44px}
.section-head h2{font-size:clamp(24px,3vw,32px);letter-spacing:-.01em;margin:0 0 12px;font-weight:700}
.section-head p{color:var(--text-2);font-size:15.5px;margin:0}

.features{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.feature-card{
  background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--r-lg);
  padding:24px 20px;box-shadow:var(--shadow-md);
  -webkit-backdrop-filter:blur(20px) saturate(180%);backdrop-filter:blur(20px) saturate(180%);
}
.feature-card .fi{
  width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--accent);color:#fff;margin-bottom:16px;box-shadow:0 6px 16px -5px rgba(79,70,229,.5);
}
.feature-card h3{font-size:15.5px;margin:0 0 8px;font-weight:700}
.feature-card p{font-size:13.5px;color:var(--text-2);margin:0;line-height:1.55}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{position:relative;padding:0 4px}
.step .num{
  width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;margin-bottom:16px;
  box-shadow:0 6px 16px -5px rgba(79,70,229,.5);
}
.step h3{font-size:15.5px;margin:0 0 8px;font-weight:700}
.step p{font-size:13.5px;color:var(--text-2);margin:0;line-height:1.55}

.cta-panel{
  background:var(--glass-bg-strong);border:1px solid var(--glass-border);border-radius:var(--r-xl);
  box-shadow:var(--shadow-md),var(--shadow-glow);padding:52px 32px;text-align:center;
  -webkit-backdrop-filter:blur(var(--glass-blur)) saturate(180%);backdrop-filter:blur(var(--glass-blur)) saturate(180%);
}
.cta-panel h2{font-size:clamp(22px,3vw,30px);margin:0 0 12px;font-weight:700;letter-spacing:-.01em}
.cta-panel p{color:var(--text-2);font-size:15px;margin:0 0 26px}

footer{padding:32px 0 48px;text-align:center;color:var(--text-2);font-size:13px}
.foot-links{display:flex;gap:18px;justify-content:center;margin-bottom:10px}
.foot-links a:hover{color:var(--accent)}

@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .features{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr;gap:32px}
}
@media (max-width:560px){
  .features{grid-template-columns:1fr}
  .hero{padding:56px 0 8px}
  section{padding:44px 0}
  .nav-actions .btn span.full{display:none}
}