:root{
  --primary:#69ade1;
  --primary-strong:#4b98d3;
  --primary-soft:#eaf5fd;
  --secondary:#757575;
  --secondary-dark:#55585c;
  --ink:#162235;
  --text:#263445;
  --muted:#6b7b8f;
  --line:#dce7f2;
  --bg:#f5f8fc;
  --panel:#ffffff;
  --panel-2:#f8fbff;
  --success:#dff7e7;
  --success-text:#1c6a3a;
  --shadow:0 18px 54px rgba(22,34,53,.10);
  --radius:24px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--text);background:radial-gradient(circle at left top,rgba(105,173,225,.18),transparent 32%),linear-gradient(180deg,#fbfdff 0%,var(--bg) 35%,#eef4fa 100%);line-height:1.6}
img{max-width:100%;height:auto}
.container{width:min(1180px,calc(100% - 40px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:blur(14px);border-bottom:1px solid rgba(117,117,117,.12)}
.nav{height:80px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);min-width:0;flex:1}
.brand-logo{display:block;width:auto;height:auto;max-height:52px;max-width:280px;object-fit:contain;object-position:left center;flex:0 1 auto}
.brand-fallback{width:46px;height:46px;border-radius:14px;background:linear-gradient(135deg,var(--primary),#8bc1ea);display:none;place-items:center;font-weight:900;color:#fff;box-shadow:0 10px 28px rgba(105,173,225,.35)}
.brand-text{min-width:0}
.brand-text strong{display:block;font-size:16px;line-height:1.1;color:var(--ink)}
.brand-text small{display:block;color:var(--muted);font-size:12px;margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:320px}
.nav-links{display:flex;gap:22px;justify-content:center;flex:1}
.nav-links a,.site-footer a{color:var(--secondary-dark);text-decoration:none;font-weight:650}
.nav-links a:hover,.site-footer a:hover{color:var(--primary-strong)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 20px;border-radius:999px;background:linear-gradient(135deg,var(--primary),var(--primary-strong));color:#fff;text-decoration:none;font-weight:800;border:0;cursor:pointer;box-shadow:0 12px 28px rgba(105,173,225,.26);transition:transform .18s ease,filter .18s ease,box-shadow .18s ease;white-space:nowrap}
.btn:hover{transform:translateY(-1px);filter:brightness(1.02);box-shadow:0 16px 32px rgba(105,173,225,.30)}
.btn-small{padding:11px 16px;font-size:14px}
.btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line);box-shadow:none}
.btn-ghost:hover{box-shadow:0 10px 22px rgba(22,34,53,.08)}
.hero{padding:84px 0 58px}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:34px;align-items:center}
.eyebrow,.section-kicker{color:var(--primary-strong);text-transform:uppercase;letter-spacing:.14em;font-weight:850;font-size:12px}
.hero h1{font-size:clamp(40px,5.2vw,68px);line-height:1.03;margin:16px 0;color:var(--ink);max-width:820px}
.lead{font-size:clamp(18px,2.1vw,23px);color:var(--secondary-dark);max-width:760px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:30px 0}
.trust-row,.contact-pills{display:flex;gap:10px;flex-wrap:wrap}
.trust-row span,.contact-pills span{padding:10px 14px;border:1px solid var(--line);background:rgba(255,255,255,.72);border-radius:999px;color:var(--ink);font-size:14px;font-weight:600}
.hero-card,.chat-card,.card,.contact-card,.faq-list details,.feature-item{border:1px solid rgba(117,117,117,.12);background:var(--panel);box-shadow:var(--shadow);border-radius:var(--radius)}
.hero-card{padding:24px;background:linear-gradient(180deg,#fff,#f7fbff)}
.hero-card-head{display:flex;align-items:center;gap:14px;margin-bottom:8px}
.hero-card h2{margin:6px 0 6px;font-size:26px;line-height:1.15;color:var(--ink)}
.hero-mark{width:60px;height:60px;object-fit:contain;border-radius:18px;background:#fff;border:1px solid var(--line);padding:8px;box-shadow:0 10px 22px rgba(105,173,225,.12)}
.hero-card button,.quick-bar button{width:100%;text-align:left;margin:10px 0;padding:15px 16px;border-radius:18px;border:1px solid var(--line);background:#fff;color:var(--ink);font-weight:750;cursor:pointer;transition:background .18s ease,border-color .18s ease,transform .18s ease}
.hero-card button:hover,.quick-bar button:hover{background:var(--primary-soft);border-color:rgba(105,173,225,.55);transform:translateY(-1px)}
.section{padding:78px 0}
.section-chat{background:linear-gradient(180deg,#edf5fc 0%,#f7fbff 100%);border-block:1px solid rgba(105,173,225,.15)}
.section-alt{background:linear-gradient(180deg,rgba(105,173,225,.08),rgba(255,255,255,.55))}
.section-contact{padding-top:56px}
.section-heading{text-align:center;max-width:840px;margin:0 auto 36px}
.section h2{font-size:clamp(30px,3.5vw,46px);line-height:1.08;margin:10px 0 14px;color:var(--ink)}
.section p{color:var(--muted)}
.section-note{font-size:14px;color:var(--secondary-dark);margin-top:16px}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.cards-3{grid-template-columns:repeat(3,1fr)}
.card{padding:24px;background:linear-gradient(180deg,#fff,#fbfdff)}
.card h3{margin:0 0 10px;font-size:20px;color:var(--ink)}
.card p{margin:0}
.chat-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:28px;align-items:start}
.chat-copy{padding-top:12px}
.mini-list{display:grid;gap:10px;margin-top:22px}
.mini-list span{padding:14px 16px;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.75);color:var(--ink);font-weight:600}
.chat-card{overflow:hidden;padding:0;background:linear-gradient(180deg,#ffffff 0%,#f8fbff 100%)}
.chat-header{display:flex;justify-content:space-between;align-items:center;padding:18px 20px;border-bottom:1px solid var(--line)}
.chat-header strong{color:var(--ink)}
.chat-header span{display:block;color:var(--muted);font-size:13px}
.status{display:inline-flex!important;align-items:center;gap:6px;color:var(--success-text)!important;background:var(--success);border:1px solid rgba(28,106,58,.10);border-radius:999px;padding:6px 11px;font-weight:900;text-transform:uppercase;font-size:11px!important;letter-spacing:.08em}
.status.error{background:#fff4d7;color:#8f6300!important;border-color:rgba(251,191,36,.35)}
.quick-bar{display:flex;gap:8px;flex-wrap:wrap;padding:12px 16px;border-bottom:1px solid var(--line);background:#f5f9fd}
.quick-bar button{width:auto;margin:0;padding:9px 12px;border-radius:999px;font-size:13px;white-space:nowrap}
.chat-messages{height:430px;overflow:auto;padding:18px;background:linear-gradient(180deg,#ffffff 0%,#f7fbff 100%)}
.message{max-width:88%;padding:13px 15px;border-radius:18px;margin:0 0 12px;white-space:pre-wrap;word-break:break-word;font-size:15px}
.message.assistant{background:#eef6fd;color:var(--ink);border-top-left-radius:6px;border:1px solid rgba(105,173,225,.18)}
.message.user{background:linear-gradient(135deg,var(--primary),var(--primary-strong));color:#fff;margin-left:auto;border-top-right-radius:6px;font-weight:750}
.chat-form{display:flex;gap:10px;padding:16px;border-top:1px solid var(--line)}
.chat-form input{flex:1;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--ink);padding:0 17px;font-size:16px;min-width:0;min-height:48px}
.chat-form input:focus{outline:2px solid rgba(105,173,225,.28);border-color:rgba(105,173,225,.5)}
.chat-note{font-size:13px;margin:0;padding:0 18px 18px;color:var(--muted)}
.split{display:grid;grid-template-columns:.86fr 1.14fr;gap:30px;align-items:start}
.split-advantages{align-items:center}
.faq-list{display:grid;gap:12px}
.faq-list details{padding:20px;box-shadow:none}
.faq-list summary{font-weight:850;cursor:pointer;color:var(--ink)}
.faq-list p{margin:10px 0 0}
.feature-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.feature-item{padding:22px;background:rgba(255,255,255,.82)}
.feature-item h3{margin:0 0 8px;color:var(--ink);font-size:19px}
.feature-item p{margin:0}
.contact-card{padding:36px;display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;background:linear-gradient(180deg,#fff,#f7fbff)}
.contact-card h2{margin:8px 0 10px}
.contact-actions{display:grid;gap:12px}
.legal-page{max-width:900px}
.legal-page h1{font-size:clamp(32px,4vw,54px);line-height:1.05;margin:12px 0 18px;color:var(--ink)}
.legal-page p{margin:0 0 16px;color:var(--secondary-dark)}
.site-footer{border-top:1px solid rgba(117,117,117,.12);padding:28px 0;color:var(--muted);background:rgba(255,255,255,.75)}
.footer-grid{display:flex;justify-content:space-between;gap:28px;align-items:center}
.footer-brand{display:flex;align-items:center;gap:16px;min-width:0}
.footer-brand p{margin:0;max-width:620px}
.footer-logo{width:auto;height:auto;max-height:76px;max-width:220px;object-fit:contain}
.footer-links{display:flex;gap:18px;flex-wrap:wrap;justify-content:flex-end}
@media(max-width:1040px){
  .nav-links{display:none}
  .brand-text small{max-width:240px}
  .hero-grid,.chat-grid,.split,.contact-card{grid-template-columns:1fr}
  .cards-3{grid-template-columns:repeat(2,1fr)}
  .feature-list{grid-template-columns:1fr 1fr}
  .contact-actions{display:flex;flex-wrap:wrap}
}
@media(max-width:760px){
  .container{width:min(100% - 28px,1180px)}
  .nav{height:72px}
  .btn-small{display:none}
  .brand{gap:10px}
  .brand-logo{max-height:44px;max-width:210px}
  .brand-text small{display:none}
  .hero{padding:56px 0 42px}
  .hero h1{font-size:40px}
  .cards,.cards-3,.feature-list{grid-template-columns:1fr}
  .chat-messages{height:390px}
  .footer-grid{align-items:flex-start;flex-direction:column}
  .footer-brand{flex-direction:column;align-items:flex-start}
  .footer-links{justify-content:flex-start}
}
@media(max-width:560px){
  .brand-logo{max-height:40px;max-width:176px}
  .section{padding:62px 0}
  .hero-card h2{font-size:22px}
  .lead{font-size:18px}
  .chat-form{flex-direction:column}
  .message{max-width:96%}
  .trust-row span,.contact-pills span{font-size:13px}
  .contact-card{padding:24px}
  .quick-bar{display:none}
}


/* v6 premium positioning */
.header-actions{display:flex;align-items:center;gap:10px}
.btn-whatsapp{background:linear-gradient(135deg,#25D366,#128C7E);color:#fff;box-shadow:0 12px 28px rgba(37,211,102,.24)}
.hero-v6{position:relative;overflow:hidden}
.hero-v6:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 78% 18%,rgba(105,173,225,.24),transparent 32%),radial-gradient(circle at 20% 78%,rgba(117,117,117,.08),transparent 28%);pointer-events:none}
.hero-v6>.container{position:relative}
.authority-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:26px}
.authority-strip div{padding:15px 14px;background:rgba(255,255,255,.8);border:1px solid var(--line);border-radius:18px;box-shadow:0 10px 24px rgba(22,34,53,.06)}
.authority-strip strong{display:block;color:var(--ink);font-size:20px;line-height:1.1}
.authority-strip span{display:block;color:var(--muted);font-size:13px;margin-top:4px}
.hero-card-premium{position:relative}
.hero-card-premium:after{content:"Expert AI GSM";position:absolute;right:18px;top:18px;background:var(--primary-soft);color:var(--primary-strong);border:1px solid rgba(105,173,225,.26);border-radius:999px;padding:7px 10px;font-size:11px;font-weight:900;letter-spacing:.08em;text-transform:uppercase}
.hero-direct-contact{margin-top:16px;padding:16px;border-radius:18px;background:linear-gradient(135deg,var(--primary-soft),#fff);border:1px solid var(--line)}
.hero-direct-contact span{display:block;color:var(--muted);font-size:13px;margin-bottom:4px}
.hero-direct-contact a{color:var(--primary-strong);font-weight:900;text-decoration:none}
.contact-inline{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.contact-inline a{display:inline-flex;align-items:center;justify-content:center;padding:11px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--ink);font-weight:800;text-decoration:none}
.contact-inline a:hover{border-color:rgba(105,173,225,.5);color:var(--primary-strong)}
.section-expert{padding-top:64px;padding-bottom:64px;background:linear-gradient(135deg,#162235,#2d4058);color:#fff}
.section-expert .section-kicker{color:#9dd3fb}
.section-expert h2,.section-expert p{color:#fff}
.expert-panel{display:grid;grid-template-columns:.9fr 1.1fr;gap:28px;align-items:center}
.expert-copy p{opacity:.86}
.expert-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.expert-stats article{padding:22px;border-radius:22px;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.16)}
.expert-stats strong{display:block;font-size:30px;line-height:1;color:#fff}
.expert-stats span{display:block;margin-top:8px;color:rgba(255,255,255,.82)}
.contact-card-v6{border:1px solid rgba(105,173,225,.28);box-shadow:0 24px 72px rgba(105,173,225,.16)}
.floating-whatsapp{position:fixed;right:18px;bottom:18px;z-index:60;display:flex;flex-direction:column;gap:1px;padding:13px 16px;border-radius:18px;background:linear-gradient(135deg,#25D366,#128C7E);color:#fff;text-decoration:none;box-shadow:0 18px 42px rgba(18,140,126,.32);border:1px solid rgba(255,255,255,.22)}
.floating-whatsapp span{font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.08em;opacity:.9}
.floating-whatsapp strong{font-size:15px;line-height:1.1}
.floating-whatsapp:hover{transform:translateY(-1px)}
@media(max-width:1040px){
  .header-actions .btn-small:first-child{display:inline-flex}
  .authority-strip,.expert-panel{grid-template-columns:1fr}
}
@media(max-width:760px){
  .header-actions{display:none}
  .authority-strip,.expert-stats{grid-template-columns:1fr 1fr}
  .floating-whatsapp{right:12px;bottom:12px;padding:11px 13px}
  .floating-whatsapp strong{font-size:13px}
}
@media(max-width:560px){
  .authority-strip,.expert-stats{grid-template-columns:1fr}
  .floating-whatsapp span{display:none}
}

.message.assistant a {
  color: var(--primary-strong);
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.message.assistant a:hover {
  filter: brightness(0.92);
}