:root{
  --ink:#f6f8fc; --ink2:#eef2f9; --blue:#1b4d9e; --blue2:#2563eb; --cyan:#1b4d9e;
  --amber:#b45309; --text:#1c2540; --muted:#5a6a8c; --card:#ffffff; --line:#dfe6f2;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Segoe UI',system-ui,-apple-system,sans-serif;background:var(--ink);color:var(--text);overflow-x:hidden;line-height:1.6}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
/* nav */
nav{position:fixed;top:0;left:0;right:0;z-index:100;backdrop-filter:blur(14px);background:rgba(255,255,255,.85);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-weight:800;font-size:18px;letter-spacing:.3px;display:flex;align-items:center;gap:10px;color:#14213d;white-space:nowrap}
.logo .dot{width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,#1b4d9e,#2563eb);box-shadow:0 0 12px rgba(37,99,235,.5)}
.logo em{font-style:normal;color:#1b4d9e}
.nav-links{display:flex;gap:24px;font-size:14px;color:var(--muted);align-items:center}
.nav-links a:hover{color:#1b4d9e}
.nav-links a.active{color:#1b4d9e;font-weight:700}
.nav-cta{background:linear-gradient(135deg,#1b4d9e,#2563eb);padding:8px 18px;border-radius:999px;color:#fff!important;font-weight:600;box-shadow:0 4px 18px rgba(27,77,158,.35)}
@media(max-width:820px){.nav-links a:not(.nav-cta){display:none}}
main{padding-top:64px}
/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:12px;font-weight:700;font-size:15px;transition:.25s;cursor:pointer;border:none}
.btn-primary{background:linear-gradient(135deg,#1b4d9e,#2563eb);color:#fff;box-shadow:0 6px 24px rgba(27,77,158,.4)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 10px 30px rgba(27,77,158,.55)}
.btn-ghost{border:1px solid #c9d5ea;color:var(--text);background:#fff}
.btn-ghost:hover{border-color:#1b4d9e;color:#1b4d9e}
/* hero (home) */
.hero{position:relative;min-height:88vh;display:flex;align-items:center;overflow:hidden;background:linear-gradient(180deg,#ffffff 0%,#f1f5fb 100%)}
.bg-orb{position:absolute;border-radius:50%;filter:blur(70px);opacity:.4;pointer-events:none}
.orb1{width:520px;height:520px;background:radial-gradient(circle,rgba(37,99,235,.22),transparent 65%);top:-120px;right:-80px;animation:drift 14s ease-in-out infinite alternate}
.orb2{width:420px;height:420px;background:radial-gradient(circle,rgba(27,77,158,.16),transparent 65%);bottom:-140px;left:-100px;animation:drift 18s ease-in-out infinite alternate-reverse}
@keyframes drift{from{transform:translate(0,0) scale(1)}to{transform:translate(60px,-40px) scale(1.12)}}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:30px;align-items:center;position:relative;z-index:2;width:100%}
@media(max-width:860px){.hero-grid{grid-template-columns:1fr;text-align:center}.hero-dog{order:-1;max-width:330px;margin:0 auto}.hero .lead,.hero .pos{margin-left:auto;margin-right:auto}.cta-row{justify-content:center}}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:2px;color:#1b4d9e;border:1px solid rgba(27,77,158,.35);padding:6px 16px;border-radius:999px;margin-bottom:20px;background:rgba(27,77,158,.05)}
.kicker .pulse{width:8px;height:8px;border-radius:50%;background:#2563eb;animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(37,99,235,.4)}50%{box-shadow:0 0 0 8px rgba(37,99,235,0)}}
h1{font-size:clamp(34px,5vw,56px);line-height:1.14;font-weight:800;letter-spacing:-.5px;color:#14213d}
h1 .grad{background:linear-gradient(90deg,#1b4d9e,#2563eb,#0ea5e9);-webkit-background-clip:text;background-clip:text;color:transparent;background-size:200% auto;animation:shine 5s linear infinite}
@keyframes shine{to{background-position:200% center}}
.hero p.lead{margin:22px 0 14px;font-size:16.5px;color:var(--muted);max-width:540px}
.hero .pos{font-size:14.5px;color:var(--text);border-left:3px solid #2563eb;padding:10px 16px;background:rgba(37,99,235,.05);border-radius:0 12px 12px 0;max-width:540px;margin-bottom:26px}
.cta-row{display:flex;gap:14px;flex-wrap:wrap}
.hero-dog{position:relative;display:flex;justify-content:center}
.hero-dog img{width:min(440px,80%);filter:drop-shadow(0 30px 50px rgba(28,37,64,.22));animation:floaty 5s ease-in-out infinite;will-change:transform}
@keyframes floaty{0%,100%{transform:translateY(0) rotate(-1deg)}50%{transform:translateY(-22px) rotate(1.5deg)}}
.halo{position:absolute;inset:auto;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(37,99,235,.14),transparent 62%);z-index:-1;animation:haloPulse 4s ease-in-out infinite}
@keyframes haloPulse{0%,100%{transform:scale(1);opacity:.7}50%{transform:scale(1.15);opacity:1}}
.badge-float{position:absolute;background:rgba(255,255,255,.94);border:1px solid var(--line);padding:8px 14px;border-radius:12px;font-size:12.5px;font-weight:600;color:#14213d;backdrop-filter:blur(8px);animation:floaty 6s ease-in-out infinite;box-shadow:0 8px 24px rgba(28,37,64,.12)}
.bf1{top:10%;left:0;animation-delay:.6s}
.bf2{bottom:14%;right:0;animation-delay:1.2s}
.bf1 span,.bf2 span{color:#b45309}
/* page header (subpages) */
.pagehead{position:relative;padding:72px 0 40px;background:linear-gradient(180deg,#ffffff 0%,#f1f5fb 100%);overflow:hidden}
.pagehead .kicker{margin-bottom:16px}
.pagehead h1{font-size:clamp(30px,4.4vw,46px)}
.pagehead p.sub{color:var(--muted);font-size:16px;max-width:640px;margin-top:16px}
/* marquee */
.marquee{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:16px 0;overflow:hidden;background:#fff}
.marquee-track{display:flex;gap:48px;white-space:nowrap;animation:scroll 30s linear infinite;font-size:14px;color:var(--muted);letter-spacing:1px}
@keyframes scroll{to{transform:translateX(-50%)}}
.marquee-track b{color:#1b4d9e;font-weight:600}
/* sections */
section{padding:80px 0;position:relative}
section.tint{background:var(--ink2)}
.sec-head{text-align:center;margin-bottom:52px}
.sec-head h2{font-size:clamp(26px,3.6vw,40px);font-weight:800;color:#14213d}
.sec-head h2::after{content:"";display:block;width:64px;height:5px;margin:16px auto 0;border-radius:99px;background:linear-gradient(90deg,#1b4d9e,#2563eb,#0ea5e9)}
.sec-head p{color:var(--muted);margin-top:18px;max-width:640px;margin-left:auto;margin-right:auto}
.reveal{opacity:0;transform:translateY(34px);transition:opacity .8s ease,transform .8s ease}
.reveal.in{opacity:1;transform:none}
/* products */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media(max-width:1000px){.prod-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.prod-grid{grid-template-columns:1fr}}
.prod{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;transition:.35s;position:relative;display:flex;flex-direction:column}
.prod:hover{transform:translateY(-8px);border-color:rgba(37,99,235,.5);box-shadow:0 18px 44px rgba(28,37,64,.14)}
.prod .img{height:210px;display:flex;align-items:center;justify-content:center;overflow:hidden;background:linear-gradient(160deg,#eaf1fa,#dce7f6)}
.prod .img img{width:100%;height:100%;object-fit:cover;transition:.5s}
.prod:hover .img img{transform:scale(1.07)}
.prod .body{padding:20px;flex:1;display:flex;flex-direction:column}
.prod h3{font-size:16.5px;margin-bottom:6px;color:#14213d}
.prod p{font-size:13px;color:var(--muted);flex:1}
.tag{display:inline-block;margin-top:12px;font-size:11.5px;color:#1b4d9e;background:rgba(37,99,235,.07);border:1px solid rgba(37,99,235,.3);padding:3px 11px;border-radius:999px;align-self:flex-start}
/* placeholder */
.ph-box{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;color:var(--muted);font-size:12.5px;text-align:center;background:repeating-linear-gradient(45deg,#f2f6fc,#f2f6fc 12px,#eaf0f9 12px,#eaf0f9 24px)}
.ph-box .ph-ico{font-size:34px;opacity:.6}
/* customization */
.cust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:860px){.cust-grid{grid-template-columns:1fr}}
.cust{background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px;transition:.3s;display:flex;flex-direction:column}
.cust:hover{transform:translateY(-6px);border-color:rgba(37,99,235,.5);box-shadow:0 12px 28px rgba(28,37,64,.08)}
.cust .ci-ico{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,rgba(27,77,158,.12),rgba(37,99,235,.18));display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:16px}
.cust h3{font-size:17.5px;margin-bottom:8px;color:#14213d}
.cust p{font-size:13.5px;color:var(--muted);flex:1}
.cust .lvl{margin-top:16px;font-size:12px;color:#1b4d9e;font-weight:700;letter-spacing:.5px}
/* about */
.about-part{margin-bottom:56px}
.about-part:last-child{margin-bottom:0}
.about-label{display:inline-block;font-size:12px;letter-spacing:2px;color:#1b4d9e;border:1px solid rgba(27,77,158,.3);padding:4px 14px;border-radius:999px;margin-bottom:18px;background:rgba(27,77,158,.05)}
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:start}
@media(max-width:860px){.about-grid{grid-template-columns:1fr}}
.about-text h3{font-size:24px;color:#14213d;margin-bottom:14px}
.about-text p{font-size:14.5px;color:var(--muted);margin-bottom:12px}
.about-text p b{color:var(--text)}
.photo-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.photo-slot{border-radius:16px;overflow:hidden;aspect-ratio:4/3}
.founder-video{border-radius:18px;overflow:hidden;aspect-ratio:16/9}
/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
@media(max-width:860px){.contact-grid{grid-template-columns:1fr}}
.form-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:30px}
.field{margin-bottom:18px}
.field label{display:block;font-size:12.5px;color:var(--muted);margin-bottom:7px;letter-spacing:.4px}
.field input,.field textarea,.field select{width:100%;background:#fbfcfe;border:1px solid var(--line);border-radius:11px;padding:12px 14px;color:var(--text);font-size:14.5px;outline:none;transition:.25s;font-family:inherit}
.field input:focus,.field textarea:focus,.field select:focus{border-color:#2563eb;box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.field textarea{min-height:110px;resize:vertical}
.contact-info h3{font-size:22px;margin-bottom:16px;color:#14213d}
.contact-info p{color:var(--muted);font-size:14.5px;margin-bottom:22px}
.ci{display:flex;gap:14px;align-items:center;margin-bottom:16px;font-size:14.5px}
.ci .ico{width:42px;height:42px;border-radius:12px;background:rgba(37,99,235,.1);display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}
.ci a{color:#1b4d9e;font-weight:600}
/* cta band */
.ctaband{background:linear-gradient(135deg,#1b4d9e,#2563eb);color:#fff;text-align:center;padding:64px 0}
.ctaband h2{font-size:clamp(24px,3.4vw,36px);font-weight:800;margin-bottom:12px}
.ctaband p{opacity:.9;margin-bottom:26px;font-size:15.5px}
.ctaband .btn-primary{background:#fff;color:#1b4d9e;box-shadow:0 8px 24px rgba(0,0,0,.2)}
.ctaband .btn-primary:hover{color:#1b4d9e}
/* toast */
.toast{position:fixed;bottom:26px;left:50%;transform:translateX(-50%) translateY(120px);background:linear-gradient(135deg,#059669,#10b981);color:#fff;padding:14px 26px;border-radius:14px;font-weight:600;z-index:200;transition:.45s;box-shadow:0 10px 34px rgba(5,150,105,.5)}
.toast.show{transform:translateX(-50%) translateY(0)}
/* footer */
footer{border-top:1px solid var(--line);padding:34px 0;text-align:center;color:var(--muted);font-size:13.5px;background:#fff}
footer b{color:var(--text)}
footer .slog{font-size:15px;color:#1b4d9e;margin-bottom:8px;font-weight:700;letter-spacing:.5px}

/* ============ AI tech section ============ */
.tech-layout{display:grid;grid-template-columns:1fr 1.25fr 1fr;gap:20px;align-items:stretch}
@media(max-width:1000px){.tech-layout{grid-template-columns:1fr 1fr}.tech-center{grid-column:span 2;order:-1}}
@media(max-width:640px){.tech-layout{grid-template-columns:1fr}.tech-center{grid-column:span 1}}
.tech-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;transition:.3s;min-height:150px}
.tech-card:hover{transform:translateY(-5px);border-color:rgba(37,99,235,.5);box-shadow:0 12px 28px rgba(28,37,64,.08)}
.tech-card .ico{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,rgba(27,77,158,.12),rgba(37,99,235,.18));display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:12px}
.tech-card h4{font-size:15.5px;color:#14213d;margin-bottom:6px}
.tech-card p{font-size:13px;color:var(--muted)}
.tech-center{background:linear-gradient(160deg,#eef4ff,#e0e9f8);border:1px solid #c9d9f7;border-radius:22px;padding:28px;display:flex;flex-direction:column;align-items:center;text-align:center;justify-content:center}
.tech-center img{width:min(300px,70%);filter:drop-shadow(0 18px 34px rgba(28,37,64,.25));animation:floaty 5s ease-in-out infinite}
.tech-center h3{font-size:20px;color:#14213d;margin:18px 0 8px}
.tech-center p{font-size:13.5px;color:var(--muted);max-width:340px}
.tech-stack-col{display:flex;flex-direction:column;gap:20px}
/* ============ scenarios ============ */
.scen-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
@media(max-width:860px){.scen-grid{grid-template-columns:1fr}}
.scen{background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden;display:flex;flex-direction:column;transition:.3s}
.scen:hover{transform:translateY(-6px);box-shadow:0 16px 40px rgba(28,37,64,.12)}
.scen img{width:100%;height:280px;object-fit:cover}
.scen .body{padding:26px;flex:1}
.scen h3{font-size:20px;color:#14213d;margin-bottom:10px}
.scen p{font-size:14px;color:var(--muted);margin-bottom:10px}
.scen ul{margin:8px 0 0 18px;font-size:13.5px;color:var(--muted)}
.scen li{margin-bottom:5px}
.scen li b{color:var(--text)}
/* ============ map + voices ============ */
.map-wrap{position:relative;background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px}
.map-wrap svg{width:100%;height:auto;display:block}
.dc-badge{fill:#1b4d9e;rx:7}
.dc-badge text{fill:#fff;font-size:11px;font-family:'Segoe UI',sans-serif}
.edge-dot{fill:#2563eb}
.edge-label{fill:#1b4d9e;font-size:11px;font-family:'Segoe UI',sans-serif;font-weight:600}
.map-legend{display:flex;gap:26px;justify-content:center;margin-top:10px;font-size:12.5px;color:var(--muted);flex-wrap:wrap}
.map-legend .sw{display:inline-block;width:16px;height:10px;border-radius:3px;background:#1b4d9e;margin-right:6px;vertical-align:middle}
.map-legend .sw2{display:inline-block;width:9px;height:9px;border-radius:2px;background:#2563eb;margin-right:6px;vertical-align:middle;transform:rotate(45deg)}
/* voice player */
.voice-intro{text-align:center;margin-bottom:26px}
.voice-intro .big{font-size:clamp(28px,4vw,44px);font-weight:800;background:linear-gradient(90deg,#1b4d9e,#2563eb,#0ea5e9);-webkit-background-clip:text;background-clip:text;color:transparent}
.voice-intro p{color:var(--muted);margin-top:8px;font-size:14.5px}
.voice-player{display:flex;gap:12px;max-width:520px;margin:22px auto 0;align-items:center}
.voice-player select{flex:1;background:#fbfcfe url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%231b4d9e' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat right 56px center;border:1px solid var(--line);border-radius:12px;padding:13px 16px;color:var(--text);font-size:15px;outline:none;font-family:inherit;-webkit-appearance:none;appearance:none}
.voice-player select:focus{border-color:#2563eb;box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.play-btn{background:linear-gradient(135deg,#1b4d9e,#2563eb);color:#fff;border:none;border-radius:12px;padding:13px 26px;font-weight:700;font-size:15px;cursor:pointer;box-shadow:0 6px 20px rgba(27,77,158,.4);transition:.25s;font-family:inherit;white-space:nowrap}
.play-btn:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(27,77,158,.55)}
.play-btn.playing{background:linear-gradient(135deg,#059669,#10b981)}
.voice-note{text-align:center;font-size:12.5px;color:var(--muted);margin-top:14px}

/* scenario rows (alternating) */
.scen-row{display:grid;grid-template-columns:1fr 1fr;gap:0;background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden;transition:.3s;margin-bottom:26px}
.scen-row:hover{transform:translateY(-5px);box-shadow:0 16px 40px rgba(28,37,64,.12)}
.scen-row img{width:100%;height:100%;min-height:340px;object-fit:cover}
.scen-row .scen-body{padding:38px 40px}
.scen-row.flip .scen-body{order:-1}
.scen-tag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:1.5px;color:#1b4d9e;border:1px solid rgba(27,77,158,.3);background:rgba(27,77,158,.05);padding:4px 14px;border-radius:999px;margin-bottom:14px}
.scen-row h3{font-size:23px;color:#14213d;margin-bottom:10px}
.scen-row .scen-body>p{font-size:14.5px;color:var(--muted);margin-bottom:14px}
.scen-row ul{margin:0 0 0 18px;font-size:13.5px;color:var(--muted)}
.scen-row li{margin-bottom:7px}
.scen-row li b{color:var(--text)}
@media(max-width:860px){.scen-row{grid-template-columns:1fr}.scen-row img{min-height:240px;max-height:300px}.scen-row .scen-body{padding:26px}}

/* hero video background */
.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(100deg,rgba(246,248,252,.96) 0%,rgba(246,248,252,.86) 38%,rgba(246,248,252,.25) 75%,rgba(246,248,252,0) 100%);z-index:1}
.hero-grid{z-index:2}
@media(max-width:860px){.hero-overlay{background:linear-gradient(180deg,rgba(246,248,252,.95) 0%,rgba(246,248,252,.82) 55%,rgba(246,248,252,.45) 100%)}}