:root{
  --ink:#0f1112;--ink-2:#1d1f20;--text:#2b2f33;--muted:#5d646b;
  --bg:#ffffff;--bg-alt:#f4f7fa;--line:#e3e8ee;
  --blue:#1e9be0;--blue-d:#1279b3;--red:#e0103f;--red-d:#b5172a;
  --orange:#f68b1f;--green:#4cb848;--yellow:#fbbf16;
  --radius:16px;--shadow:0 10px 30px rgba(15,17,18,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--text);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2{text-wrap:balance}
h1,h2,h3,h4{font-family:Lexend,Inter,sans-serif;color:var(--ink);line-height:1.15;letter-spacing:-.01em}
h1{font-size:clamp(2.2rem,5vw,3.6rem);font-weight:800}
h2{font-size:clamp(1.7rem,3.4vw,2.5rem);font-weight:700;margin-bottom:.6rem}
h3{font-size:1.15rem;font-weight:600;margin-bottom:.4rem}
p{margin-bottom:1rem}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}
.eyebrow{font-family:Lexend,sans-serif;font-size:.8rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--red);margin-bottom:.7rem}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;background:var(--ink);color:#fff;font-family:Lexend,sans-serif;font-weight:600;padding:.85rem 1.5rem;border-radius:999px;border:2px solid var(--ink);cursor:pointer;font-size:1rem;transition:transform .15s,background .15s,color .15s,border-color .15s}
.btn:hover{background:var(--red);border-color:var(--red);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-light{background:#fff;color:var(--ink);border-color:#fff}
.btn-light:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-sm{padding:.55rem 1.1rem;font-size:.92rem}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid transparent;transition:border-color .2s,box-shadow .2s}
.site-header.scrolled{border-color:var(--line);box-shadow:0 4px 18px rgba(0,0,0,.05)}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;gap:.65rem}
.brand-text{display:flex;flex-wrap:wrap;align-items:baseline;line-height:1;font-family:Lexend,sans-serif;font-size:1.55rem;font-weight:800;letter-spacing:-.02em}
.brand-text b{color:var(--ink);font-weight:800}
.brand-text i{color:var(--blue);font-style:normal;font-weight:700}
.brand-text small{flex-basis:100%;font-size:.62rem;font-weight:400;letter-spacing:.02em;color:var(--muted);margin-top:4px}
.nav-links{display:flex;align-items:center;gap:1.8rem;font-weight:500}
.nav-links a:not(.btn){position:relative;color:var(--ink-2)}
.nav-links a:not(.btn)::after{content:"";position:absolute;left:0;bottom:-4px;width:0;height:2px;background:var(--red);transition:width .2s}
.nav-links a:not(.btn):hover::after{width:100%}
.nav-toggle{display:none;background:none;border:0;width:42px;height:42px;cursor:pointer;flex-direction:column;justify-content:center;gap:5px;padding:9px}
.nav-toggle span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s,opacity .2s}

/* hero */
.hero{position:relative;overflow:hidden;padding:72px 0 96px;background:linear-gradient(180deg,#fff 0%,var(--bg-alt) 100%)}
.hero-shape{position:absolute;pointer-events:none}
.hero-shape.s1{top:0;right:0;width:260px;height:260px;background:linear-gradient(135deg,var(--red-d),var(--red));clip-path:polygon(100% 0,100% 100%,0 0)}
.hero-shape.s2{bottom:0;left:0;width:200px;height:200px;background:var(--ink-2);clip-path:polygon(0 0,100% 100%,0 100%)}
.hero-grid{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hl{background:linear-gradient(90deg,var(--blue),var(--green));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:1.13rem;color:var(--muted);max-width:560px;margin:1.2rem 0 1.8rem}
.hero-cta{display:flex;flex-wrap:wrap;gap:.8rem}
.hero-points{list-style:none;display:flex;flex-wrap:wrap;gap:.6rem 1.4rem;margin-top:2rem;font-size:.93rem;color:var(--ink-2)}
.hero-points li{display:flex;align-items:center;gap:.45rem}
.hero-points li::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--green)}
.hero-art{position:relative;min-height:380px;display:flex;align-items:center;justify-content:center}
.orb{width:300px;height:300px;border-radius:50%;background:#fff;box-shadow:var(--shadow),0 0 0 14px rgba(30,155,224,.07),0 0 0 30px rgba(30,155,224,.04);display:grid;place-items:center;animation:float 6s ease-in-out infinite}
.orb img{width:190px;height:190px;animation:spin 40s linear infinite}
.code-card{position:absolute;bottom:0;left:-10px;background:var(--ink);color:#d7dde3;border-radius:14px;padding:14px 18px 16px;box-shadow:0 18px 40px rgba(0,0,0,.25);font-size:.82rem}
.code-card pre{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;line-height:1.55;white-space:pre}
.code-card .k{color:#ff6b8b}.code-card .f{color:#5cc3ff}.code-card .s{color:#8fdc7c}
.dots{display:flex;gap:6px;margin-bottom:10px}
.dots i{width:10px;height:10px;border-radius:50%;background:var(--red)}
.dots i:nth-child(2){background:var(--yellow)}.dots i:nth-child(3){background:var(--green)}
@keyframes float{50%{transform:translateY(-12px)}}
@keyframes spin{to{transform:rotate(360deg)}}

/* sections */
.section{padding:96px 0}
.section.alt{background:var(--bg-alt)}
.section-head{max-width:640px;margin-bottom:48px}
.section-head p:last-child{color:var(--muted)}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;transition:transform .2s,box-shadow .2s,border-color .2s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
.card p{color:var(--muted);font-size:.95rem;margin:0}
.ic{width:48px;height:48px;border-radius:12px;display:grid;place-items:center;margin-bottom:18px}
.ic svg,.ci svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.c-blue{background:rgba(30,155,224,.12);color:var(--blue-d)}
.c-green{background:rgba(76,184,72,.14);color:#2f8a2b}
.c-orange{background:rgba(246,139,31,.14);color:#c4650a}
.c-red{background:rgba(224,16,63,.1);color:var(--red-d)}

.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.about-grid p{color:var(--muted)}
.why{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:16px}
.why li{background:#fff;border-radius:var(--radius);padding:22px;border-top:4px solid var(--blue);box-shadow:0 2px 10px rgba(0,0,0,.03)}
.why li:nth-child(2){border-color:var(--green)}.why li:nth-child(3){border-color:var(--orange)}.why li:nth-child(4){border-color:var(--red)}
.why b{display:block;font-family:Lexend,sans-serif;color:var(--ink);margin-bottom:.3rem}
.why span{font-size:.93rem;color:var(--muted)}

.steps{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:s}
.steps li{position:relative;padding:28px 22px;border-radius:var(--radius);background:var(--bg-alt)}
.steps .n{display:block;font-family:Lexend,sans-serif;font-size:2.2rem;font-weight:800;color:transparent;-webkit-text-stroke:1.5px var(--red);margin-bottom:.6rem}
.steps p{color:var(--muted);font-size:.95rem;margin:0}
.stack{display:flex;flex-wrap:wrap;gap:10px;margin-top:40px}
.stack span{padding:.45rem 1rem;border:1px solid var(--line);border-radius:999px;font-size:.88rem;font-weight:500;color:var(--ink-2);background:#fff}

.cta-band{background:linear-gradient(120deg,var(--ink) 0%,var(--ink-2) 55%,var(--red-d) 100%);color:#fff;padding:72px 0}
.cta-inner{text-align:center}
.cta-inner h2{color:#fff}
.cta-inner p{color:rgba(255,255,255,.75);margin-bottom:1.6rem}

.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:start}
.contact-grid > div > p{color:var(--muted)}
.contact-list{list-style:none;display:grid;gap:18px;margin-top:1.6rem}
.contact-list li{display:flex;gap:14px;align-items:flex-start}
.contact-list small{display:block;font-size:.78rem;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.contact-list a,.contact-list span{font-weight:500;color:var(--ink)}
.contact-list a:hover{color:var(--blue-d)}
.ci{flex:none;width:44px;height:44px;border-radius:12px;background:var(--bg-alt);display:grid;place-items:center;color:var(--red-d)}
.contact-form{background:#fff;border:1px solid var(--line);border-radius:20px;padding:30px;box-shadow:var(--shadow);display:grid;gap:16px}
.contact-form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.contact-form label{display:grid;gap:6px;font-size:.88rem;font-weight:600;color:var(--ink-2)}
.contact-form input,.contact-form select,.contact-form textarea{font:inherit;font-weight:400;font-size:1rem;color:var(--text);padding:.8rem .95rem;border:1px solid var(--line);border-radius:10px;background:#fbfcfd;transition:border-color .15s,box-shadow .15s;width:100%}
.contact-form textarea{resize:vertical}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(30,155,224,.15)}
.contact-form .invalid{border-color:var(--red)}
.form-msg{margin:0;font-size:.9rem;color:var(--red-d);min-height:1em}
.contact-form .btn{justify-self:start}

/* footer */
.site-footer{background:var(--ink);color:#c9cfd5;padding:64px 0 24px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px}
.site-footer h4{color:#fff;font-size:1rem;margin-bottom:1rem}
.site-footer a,.site-footer .muted{display:block;margin-bottom:.5rem;font-size:.95rem}
.site-footer a:hover{color:#fff}
.brand-light .brand-text b{color:#fff}
.brand-light .brand-text small{color:#9aa3ab}
.site-footer .brand{display:flex;margin-bottom:1rem}
.muted{color:#9aa3ab}
.copy{border-top:1px solid rgba(255,255,255,.1);margin-top:40px;padding-top:20px;font-size:.88rem;color:#8a939b}

.wa-float{position:fixed;right:20px;bottom:20px;z-index:60;width:56px;height:56px;border-radius:50%;background:#25d366;display:grid;place-items:center;box-shadow:0 8px 24px rgba(37,211,102,.4);transition:transform .2s}
.wa-float:hover{transform:scale(1.08)}
.wa-float svg{width:30px;height:30px}

/* reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}html{scroll-behavior:auto}}

/* responsive */
@media (max-width:1000px){
  .cards{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .hero-grid,.about-grid,.contact-grid{grid-template-columns:1fr}
  .hero-art{min-height:340px}
}
@media (max-width:760px){
  .nav-toggle{display:flex}
  .nav-links{position:absolute;top:74px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:#fff;border-bottom:1px solid var(--line);padding:8px 20px 20px;display:none}
  .nav-links.open{display:flex}
  .nav-links a:not(.btn){padding:.85rem 0;border-bottom:1px solid var(--line)}
  .nav-links .btn{margin-top:14px}
  .nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
  .nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .hero{padding:48px 0 72px}
  .hero-shape.s1{width:120px;height:120px}
  .hero-shape.s2{width:90px;height:90px}
  .section{padding:72px 0}
  .orb{width:230px;height:230px}.orb img{width:150px;height:150px}
  .code-card{left:0;font-size:.74rem}
  .why,.contact-form .row{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
}
@media (max-width:520px){
  .cards,.steps{grid-template-columns:1fr}
  .brand-text{font-size:1.3rem}
  .contact-form{padding:22px}
  .contact-form .btn,.hero-cta .btn{width:100%}
}