:root{--ink:#0f1222;--sub:#64748b;--line:#e6e8f0;--bg:#fff;--soft:#f7f8fc;--brand:#4f46e5;--brand2:#7c3aed;--brand-dark:#4338ca;--brand-soft:#eef0ff;--pink:#ec4899;--shadow:0 1px 2px rgba(15,18,34,.04);--shadow-lg:0 20px 40px -12px rgba(79,70,229,.25)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font:16px/1.6 -apple-system,BlinkMacSystemFont,'Segoe UI',system-ui,sans-serif;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px;position:relative}

/* ---- nav ---- */
header.site{border-bottom:1px solid var(--line);position:sticky;top:0;background:rgba(255,255,255,.78);backdrop-filter:saturate(180%) blur(10px);z-index:50}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18.5px;color:var(--ink);letter-spacing:-.01em}
.brand:hover{text-decoration:none}
.brand .mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--brand2));display:flex;align-items:center;justify-content:center;color:#fff;font-size:17px;flex:none;box-shadow:0 4px 12px -2px rgba(79,70,229,.5)}
nav.main{display:flex;align-items:center;gap:30px}
nav.main a{color:var(--sub);font-weight:600;font-size:14.5px;transition:color .15s}
nav.main a:hover{color:var(--ink);text-decoration:none}
.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border-radius:9px;font-weight:600;font-size:14.5px;border:1px solid transparent;cursor:pointer;transition:all .18s ease}
.btn:hover{text-decoration:none}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 6px 16px -4px rgba(79,70,229,.55)}
.btn-primary:hover{box-shadow:0 10px 22px -4px rgba(79,70,229,.65);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--soft);border-color:#d9dcec}
.nav-actions{display:flex;align-items:center;gap:12px}

/* ---- decorative backdrops ---- */
.mesh{position:absolute;inset:0;overflow:hidden;z-index:0;pointer-events:none}
.mesh i{position:absolute;border-radius:50%;filter:blur(64px);opacity:.55}
.mesh i:nth-child(1){width:420px;height:420px;background:radial-gradient(circle,#c7bfff,transparent 70%);top:-160px;left:-120px}
.mesh i:nth-child(2){width:380px;height:380px;background:radial-gradient(circle,#ffd6ea,transparent 70%);top:-60px;right:-140px}
.mesh i:nth-child(3){width:300px;height:300px;background:radial-gradient(circle,#c3f0ff,transparent 70%);bottom:-140px;left:40%}
.dot-grid{position:absolute;inset:0;background-image:radial-gradient(circle,#dcdfef 1.4px,transparent 1.4px);background-size:22px 22px;mask-image:radial-gradient(ellipse 70% 60% at 50% 20%,#000 40%,transparent 100%);z-index:0;opacity:.7}

/* ---- hero ---- */
.hero{position:relative;padding:96px 0 80px;text-align:center;overflow:hidden;background:linear-gradient(180deg,var(--brand-soft) 0%,#fff 75%)}
.hero .wrap{z-index:1}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);padding:6px 14px 6px 8px;border-radius:999px;font-size:13px;font-weight:600;color:var(--brand-dark);box-shadow:var(--shadow);margin-bottom:26px}
.eyebrow .px{width:8px;height:8px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 3px #dcfce7;flex:none}
.hero h1{font-size:54px;line-height:1.08;margin:0 0 20px;letter-spacing:-.03em;font-weight:800}
.hero h1 .grad{background:linear-gradient(135deg,var(--brand),var(--pink) 70%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:19.5px;color:var(--sub);max-width:600px;margin:0 auto 34px}
.hero .cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:18px}
.trust-line{color:var(--sub);font-size:13.5px}

/* ---- product mockup ---- */
.mockup-stage{position:relative;max-width:760px;margin:56px auto 0}
.mockup{position:relative;background:#fff;border-radius:20px;border:1px solid var(--line);box-shadow:var(--shadow-lg);overflow:hidden;text-align:left;transform:perspective(1400px) rotateX(2deg)}
.mockup-head{background:linear-gradient(120deg,var(--brand),var(--brand2));padding:18px 22px;display:flex;align-items:center;gap:12px;color:#fff}
.mockup-head .av{width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.22);display:flex;align-items:center;justify-content:center;font-size:17px}
.mockup-head b{font-size:14.5px;display:block}
.mockup-head span{font-size:12px;opacity:.85;display:flex;align-items:center;gap:5px}
.mockup-head span::before{content:'';width:7px;height:7px;border-radius:50%;background:#4ade80;display:inline-block}
.mockup-body{padding:22px;background:linear-gradient(180deg,#fbfbff,#fff);display:flex;flex-direction:column;gap:12px}
.bubble{max-width:72%;padding:11px 15px;border-radius:14px;font-size:14px;line-height:1.45;box-shadow:0 1px 2px rgba(0,0,0,.04)}
.bubble.in{background:#fff;border:1px solid var(--line);align-self:flex-start;border-bottom-left-radius:4px}
.bubble.out{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;align-self:flex-end;border-bottom-right-radius:4px}
.bubble.ai{align-self:flex-start;display:flex;gap:8px;align-items:flex-start}
.bubble.ai .tag{font-size:10.5px;font-weight:700;color:var(--brand);background:var(--brand-soft);padding:2px 7px;border-radius:999px;display:inline-block;margin-bottom:5px}
.typing-row{display:flex;gap:4px;align-self:flex-start;background:#fff;border:1px solid var(--line);padding:11px 14px;border-radius:14px;border-bottom-left-radius:4px}
.typing-row i{width:6px;height:6px;border-radius:50%;background:#c7c9d9;animation:tdot 1.1s infinite ease-in-out}
.typing-row i:nth-child(2){animation-delay:.15s}.typing-row i:nth-child(3){animation-delay:.3s}
@keyframes tdot{0%,60%,100%{transform:translateY(0);opacity:.5}30%{transform:translateY(-3px);opacity:1}}
.mockup-input{margin:0 22px 22px;display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:12px;padding:10px 14px;color:var(--sub);font-size:13.5px;background:#fff}
.float-chip{position:absolute;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 14px;box-shadow:var(--shadow-lg);font-size:13px;font-weight:600;display:flex;align-items:center;gap:8px}
.float-chip.c1{top:14%;left:-6%;transform:rotate(-6deg)}
.float-chip.c2{bottom:10%;right:-7%;transform:rotate(5deg)}
.float-chip .ico{width:24px;height:24px;border-radius:7px;display:flex;align-items:center;justify-content:center;font-size:13px;flex:none}
.float-chip.c1 .ico{background:#dcfce7;color:#16a34a}
.float-chip.c2 .ico{background:#fef3c7;color:#d97706}
@media (max-width:720px){.float-chip{display:none}}

/* ---- sections ---- */
section{padding:84px 0;position:relative}
section h2{font-size:32px;margin:0 0 12px;text-align:center;letter-spacing:-.02em;font-weight:800}
section p.kicker{text-align:center;color:var(--sub);font-size:17px;max-width:580px;margin:0 auto 52px}
.soft{background:var(--soft)}
.eyebrow-sm{display:block;text-align:center;color:var(--brand);font-weight:700;font-size:13px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:10px}

/* ---- stat band ---- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:24px;max-width:880px;margin:0 auto}
.stat{text-align:center}
.stat b{display:block;font-size:34px;font-weight:800;background:linear-gradient(135deg,var(--brand),var(--brand2));-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:-.02em}
.stat span{color:var(--sub);font-size:13.5px;font-weight:500}

/* ---- cards ---- */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:22px}
.card{border:1px solid var(--line);border-radius:16px;padding:28px;background:#fff;position:relative;transition:transform .2s ease,box-shadow .2s ease;overflow:hidden}
.card::before{content:'';position:absolute;inset:0 0 auto 0;height:3px;background:linear-gradient(90deg,var(--brand),var(--pink));opacity:0;transition:opacity .2s}
.card:hover{transform:translateY(-4px);box-shadow:0 16px 32px -16px rgba(15,18,34,.18)}
.card:hover::before{opacity:1}
.card h3{margin:0 0 9px;font-size:17.5px;font-weight:700}
.card p{margin:0;color:var(--sub);font-size:14.5px}
.card .ic{width:42px;height:42px;border-radius:12px;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:19px;margin-bottom:16px}

/* ---- pricing ---- */
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(255px,1fr));gap:24px;align-items:stretch;max-width:1040px;margin:0 auto}
.plan{border:1px solid var(--line);border-radius:18px;padding:32px 28px;display:flex;flex-direction:column;background:#fff;position:relative;transition:transform .2s ease,box-shadow .2s ease}
.plan:hover{transform:translateY(-3px);box-shadow:0 18px 36px -18px rgba(15,18,34,.2)}
.plan.highlight{border-color:transparent;background:linear-gradient(#fff,#fff) padding-box,linear-gradient(135deg,var(--brand),var(--pink)) border-box;border-width:2px;box-shadow:var(--shadow-lg)}
.plan .badge{position:absolute;top:-13px;left:28px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;font-size:11.5px;font-weight:700;padding:5px 13px;border-radius:999px;box-shadow:0 4px 10px -2px rgba(79,70,229,.5)}
.plan h3{margin:0 0 6px;font-size:21px;font-weight:800}
.plan .desc{color:var(--sub);font-size:14px;min-height:40px}
.plan .price{font-size:36px;font-weight:800;margin:18px 0 2px;letter-spacing:-.02em}
.plan .price small{font-size:14px;font-weight:500;color:var(--sub)}
.plan .alt-price{font-size:13px;color:var(--sub);margin-bottom:18px}
.plan .feat{list-style:none;margin:0 0 26px;padding:0;font-size:14px;color:var(--ink);flex:1}
.plan .feat li{padding:8px 0;display:flex;gap:9px;align-items:flex-start}
.plan .feat li::before{content:'✓';color:#16a34a;font-weight:800;flex:none}
.toggle{display:flex;justify-content:center;gap:4px;margin-bottom:44px}
.toggle button{border:1px solid var(--line);background:#fff;padding:9px 20px;font-size:14px;font-weight:600;cursor:pointer;color:var(--sub);transition:all .15s}
.toggle button.on{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;border-color:transparent}
.toggle button:first-child{border-radius:9px 0 0 9px}
.toggle button:last-child{border-radius:0 9px 9px 0}

/* ---- cta band ---- */
.cta-band{position:relative;background:linear-gradient(135deg,var(--brand),var(--brand2) 60%,var(--pink));color:#fff;text-align:center;padding:72px 24px;border-radius:24px;margin:0 24px;overflow:hidden}
.cta-band::after{content:'';position:absolute;inset:0;background:radial-gradient(circle at 30% 20%,rgba(255,255,255,.25),transparent 55%)}
.cta-band>*{position:relative}
.cta-band h2{color:#fff}
.cta-band .btn-primary{background:#fff;color:var(--brand-dark);box-shadow:0 8px 20px -4px rgba(0,0,0,.25)}
.cta-band .btn-primary:hover{background:#f4f4ff}

/* ---- footer ---- */
footer.site{background:#0f1222;color:#9ca3c4;padding:56px 0 32px;margin-top:40px}
footer.site .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:24px}
footer.site .brand{color:#fff}
footer.site nav{display:flex;gap:24px;flex-wrap:wrap}
footer.site nav a{color:#9ca3c4;font-size:14px}
footer.site nav a:hover{color:#fff;text-decoration:none}
footer.site .bottom{border-top:1px solid #262a42;margin-top:32px;padding-top:20px;font-size:13px;color:#6b7290;text-align:center}

/* ---- legal pages ---- */
.legal{max-width:760px;margin:0 auto;padding:60px 24px}
.legal h1{font-size:34px;margin-bottom:4px;font-weight:800;letter-spacing:-.02em}
.legal .updated{color:var(--sub);font-size:14px;margin-bottom:36px}
.legal h2{font-size:20px;margin:36px 0 10px;font-weight:700}
.legal p,.legal li{color:#374151;font-size:15.5px}

/* ---- reveal-on-scroll ---- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

@media (max-width:720px){
  .hero{padding:72px 0 56px}
  .hero h1{font-size:34px}
  nav.main{display:none}
  section{padding:60px 0}
  section h2{font-size:25px}
  .cta-band{margin:0 16px;padding:52px 20px}
  footer.site .wrap{flex-direction:column;gap:28px}
}