@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Geist:wght@500;600;700&family=Geist+Mono&display=swap');
:root{--p:#5B54F5;--c:#FF7A59;--bg:#fff;--s:#F7F7FB;--ink:#14132B;--mut:#62617A;--ln:#E7E6F0;--ok:#16A34A;--r:16px}
*{box-sizing:border-box}body{margin:0;font:15px/1.6 Inter,system-ui,sans-serif;color:var(--ink);background:var(--bg)}
h1,h2,h3{font-family:Geist,Inter,sans-serif;letter-spacing:-.02em;margin:0 0 .4em}h1{font-size:58px;line-height:1.05}h2{font-size:36px}h3{font-size:18px}
.mono,code,pre{font-family:'Geist Mono',ui-monospace,monospace}a{color:var(--p);text-decoration:none}
.wrap{max-width:1140px;margin:0 auto;padding:0 24px}
nav.top{position:sticky;top:0;background:#ffffffd9;backdrop-filter:blur(10px);border-bottom:1px solid var(--ln);z-index:5}
nav.top .wrap{display:flex;align-items:center;gap:28px;height:64px}nav.top img{height:28px}nav.top a.l{color:var(--mut);font-size:14px}nav.top .sp{flex:1}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:12px;font-weight:600;border:1px solid var(--ln);background:#fff;color:var(--ink);cursor:pointer;font-size:14px}
.btn.pri{background:var(--p);color:#fff;border-color:var(--p);box-shadow:0 6px 20px #5b54f533}.btn.cor{background:var(--c);color:#fff;border-color:var(--c)}
.hero{padding:88px 0 40px;background:radial-gradient(900px 400px at 70% -10%,#5b54f51f,transparent),radial-gradient(600px 300px at 10% 10%,#ff7a5914,transparent)}
.pill{display:inline-block;padding:4px 12px;border-radius:99px;background:var(--s);border:1px solid var(--ln);font-size:13px;color:var(--mut)}
.lead{font-size:19px;color:var(--mut);max-width:620px}
.card{background:#fff;border:1px solid var(--ln);border-radius:var(--r);padding:22px;box-shadow:0 1px 2px #14132b0a}
.soft{background:var(--s)}section{padding:72px 0}.grid{display:grid;gap:18px}.g3{grid-template-columns:repeat(3,1fr)}.g2{grid-template-columns:1fr 1fr}.g4{grid-template-columns:repeat(4,1fr)}
.num{font-family:'Geist Mono';color:var(--p);font-size:13px}.tag{font-size:12px;padding:2px 8px;border-radius:6px;background:#5b54f514;color:var(--p);font-weight:600}.tag.c{background:#ff7a591a;color:#d4502f}.tag.g{background:#16a34a14;color:var(--ok)}
pre{background:#FBFBFE;border:1px solid var(--ln);border-radius:12px;padding:16px;font-size:13px;overflow:auto;margin:0}
.k{color:var(--p)}.s{color:#c2410c}.cm{color:#9a99ad}
.mock{border-radius:20px;border:1px solid var(--ln);background:#fff;box-shadow:0 30px 80px #5b54f51f;overflow:hidden;margin-top:48px}
.bar{display:flex;gap:6px;padding:12px 16px;border-bottom:1px solid var(--ln);background:var(--s)}.bar i{width:10px;height:10px;border-radius:50%;background:#dcdbe6}
.price .card{display:flex;flex-direction:column;gap:8px}.price .big{font:700 40px Geist}.price ul{padding-left:18px;color:var(--mut);margin:6px 0 12px}
.ph{font-size:12px;color:#d4502f}details{border-bottom:1px solid var(--ln);padding:16px 0}summary{font-weight:600;cursor:pointer}
footer{padding:40px 0;color:var(--mut);font-size:13px;border-top:1px solid var(--ln)}
/* app */
.app{display:grid;grid-template-columns:220px 1fr;min-height:100dvh;background:var(--s)}
.side{background:#fff;border-right:1px solid var(--ln);padding:18px 14px;display:flex;flex-direction:column;gap:4px}.side img{height:26px;margin:4px 8px 18px}
.side a{padding:9px 12px;border-radius:10px;color:var(--mut);font-weight:500}.side a.on{background:#5b54f512;color:var(--p)}
.main{padding:24px 28px}.screen{display:none}.screen.on{display:block}
.two{display:grid;grid-template-columns:380px 1fr;gap:18px}
.chat{display:flex;flex-direction:column;height:calc(100dvh - 110px)}.msgs{flex:1;overflow:auto;display:flex;flex-direction:column;gap:10px}
.m{padding:10px 14px;border-radius:14px;max-width:92%;font-size:14px}.m.u{align-self:flex-end;background:var(--p);color:#fff}.m.a{background:var(--s);border:1px solid var(--ln)}
.tc{font-family:'Geist Mono';font-size:12px;background:#fff;color:var(--p);border:1px solid #5b54f540;border-radius:6px;padding:1px 6px}.m.u .tc{background:#ffffff26;color:#fff;border-color:#fff6}
.inp{display:flex;gap:8px;margin-top:12px}.inp input{flex:1;padding:12px 14px;border:1px solid var(--ln);border-radius:12px;font:inherit}
.mic{width:44px;height:44px;border-radius:12px;border:0;background:var(--c);color:#fff;font-size:18px;cursor:pointer}
.step{display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--ln);align-items:flex-start}.dot{width:22px;height:22px;border-radius:50%;flex:none;display:grid;place-items:center;font-size:12px;color:#fff;background:#d6d5e2}
.dot.done{background:var(--ok)}.dot.run{background:var(--p);animation:pulse 1.2s infinite}@keyframes pulse{50%{box-shadow:0 0 0 6px #5b54f522}}
.track{display:flex;align-items:center;gap:8px;margin:6px 0}.track b{width:34px;font:12px 'Geist Mono';color:var(--mut)}.lane{flex:1;height:30px;position:relative;background:#fff;border:1px solid var(--ln);border-radius:8px}
.clip{position:absolute;top:3px;bottom:3px;border-radius:5px;background:#5b54f530;border:1px solid #5b54f560;font:11px 'Geist Mono';padding:4px 6px;color:var(--p);overflow:hidden}.clip.rm{background:repeating-linear-gradient(45deg,#ff7a5922,#ff7a5922 4px,#fff 4px,#fff 8px);border-color:var(--c);color:#d4502f}.clip.add{background:#16a34a22;border-color:#16a34a88;color:var(--ok)}
.modal{position:fixed;inset:0;background:#14132b40;display:none;place-items:center;backdrop-filter:blur(3px)}.modal.on{display:grid}.modal .card{width:520px}
.row{display:flex;gap:10px;align-items:center}.sp{flex:1}.muted{color:var(--mut)}
/* ===== responsive v2 ===== */
html{-webkit-text-size-adjust:100%;scroll-padding-top:76px}html,body{overflow-x:hidden}img,video,svg{max-width:100%;height:auto}
h1{font-size:clamp(36px,8.5vw,58px);margin-top:18px}h2{font-size:clamp(26px,5.5vw,36px)}.lead{font-size:clamp(17px,2.4vw,19px)}
.sh{font-size:clamp(20px,4vw,24px);margin:0}
.field{padding:12px 14px;min-height:44px;border:1px solid var(--ln);border-radius:12px;font:16px Inter,sans-serif;background:#fff}
.wl{justify-content:center;margin-top:16px}.wl .field{width:280px}
.t-rec{grid-template-columns:1fr 360px}.t-half{grid-template-columns:1fr 1fr}
.burger,.mcta{display:none}
@media (max-width:1000px){.two,.t-rec,.t-half{grid-template-columns:1fr}.chat{height:auto;min-height:420px}.g4{grid-template-columns:1fr 1fr}}
@media (max-width:900px){
 body{font-size:16px}.wrap{padding:0 20px}section{padding:52px 0}
 nav.top .wrap{gap:12px;height:60px;flex-wrap:wrap}nav.top .btn{display:none}
 nav.top a.l{display:none}
 .burger{display:grid;place-content:center;gap:5px;width:44px;height:44px;border:1px solid var(--ln);border-radius:12px;background:#fff;cursor:pointer}
 .burger i{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:.2s}
 .nav-open .burger i:nth-child(1){transform:translateY(7px) rotate(45deg)}.nav-open .burger i:nth-child(2){opacity:0}.nav-open .burger i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
 .nav-open nav.top .wrap{height:auto;padding-top:8px;padding-bottom:14px}.nav-open nav.top .wrap>img{margin-top:8px}
 .nav-open nav.top a.l{display:flex;align-items:center;flex-basis:100%;min-height:48px;font-size:17px;color:var(--ink);border-bottom:1px solid var(--ln);order:5}
 .nav-open nav.top .btn{display:flex;justify-content:center;flex:1 1 45%;order:6;margin-top:10px}
 .hero{padding:44px 0 28px}.mock{margin-top:32px}.mock .g2{padding:14px!important}
 .g2,.g3,.g4{grid-template-columns:1fr}#resolve .wrap{gap:24px!important}
 .card{padding:20px}.muted,.card p{font-size:16px}
 .btn{min-height:44px;padding:11px 18px;font-size:15px;justify-content:center}
 .hero .row{flex-wrap:wrap}.hero .row .btn{flex:1 1 200px}
 .wl{flex-direction:column;align-items:stretch;max-width:420px;margin-left:auto;margin-right:auto}.wl .field{width:100%}
 summary{min-height:44px;display:flex;align-items:center;font-size:17px}
 footer .row{flex-wrap:wrap}footer{padding-bottom:calc(100px + env(safe-area-inset-bottom))}
 pre{font-size:12.5px}.m{font-size:15px}
 .mcta{display:flex;gap:10px;position:fixed;left:0;right:0;bottom:0;z-index:6;padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:#ffffffeb;backdrop-filter:blur(10px);border-top:1px solid var(--ln);box-shadow:0 -8px 24px #14132b0d}
 .mcta .btn{flex:1}
 /* app */
 .app{display:block;min-height:100dvh}
 .side{position:fixed;left:0;right:0;bottom:0;z-index:8;flex-direction:row;gap:0;padding:6px 4px calc(6px + env(safe-area-inset-bottom));border-right:0;border-top:1px solid var(--ln);box-shadow:0 -8px 24px #14132b0f}
 .side>a:first-child,.side .card,.side .sp{display:none}
 .side a[data-s]{flex:1;min-height:52px;display:flex;align-items:center;justify-content:center;text-align:center;font-size:12px;line-height:1.2;padding:6px 4px}
 .main{padding:16px 16px calc(92px + env(safe-area-inset-bottom))}
 .main>.screen>.row:first-child{flex-wrap:wrap;gap:8px}
 .main>.screen>.row:first-child .sp{flex-basis:100%;height:0}
 .chat{border-radius:var(--r);min-height:auto;padding:16px}.msgs{overflow:visible;padding-bottom:84px}
 .inp{position:fixed;left:0;right:0;bottom:calc(64px + env(safe-area-inset-bottom));z-index:7;margin:0;padding:10px 12px;background:#fff;border-top:1px solid var(--ln)}
 .inp input{font-size:16px;min-height:44px}
 #s-chat .two>.card:last-child{margin-bottom:60px}
 .track b{width:26px}.clip{font-size:10px}
 .modal{place-items:end stretch}.modal .card{width:100%;border-radius:20px 20px 0 0;padding-bottom:calc(22px + env(safe-area-inset-bottom))}
 .modal .row{flex-wrap:wrap}.modal .row .btn{flex:1}
 .step .btn{min-height:36px}
 #s-diff>.row:last-child{flex-wrap:wrap}#s-diff>.row:last-child .btn{flex:1 1 100%}
 label{display:inline-flex;align-items:center;gap:8px;min-height:44px}
}

/* ===== mobile fix v3 ===== */
.ls{display:none}
.modal{z-index:50}
body:has(.modal.on){overflow:hidden}
.modal .card{max-height:85vh;max-height:85dvh;overflow-y:auto;overscroll-behavior:contain}
@media (max-width:900px){
 body:has(.modal.on) .side,body:has(.modal.on) .inp{display:none}
 .side a[data-s]{white-space:nowrap;font-size:13px;min-width:0}.lf{display:none}.ls{display:inline}
 .modal .card{padding-bottom:0;max-height:85svh;max-height:85dvh}
 .modal .acts{position:sticky;bottom:0;background:#fff;margin:16px -20px 0!important;padding:12px 20px calc(14px + env(safe-area-inset-bottom));border-top:1px solid var(--ln);flex-wrap:nowrap}
 .modal .acts .sp{display:none}.modal .acts .btn{flex:1 1 0;min-width:0;white-space:nowrap}
 .main>.screen>.row:first-child .tag{white-space:nowrap}
 .lane{min-width:0}.clip{white-space:nowrap;text-overflow:ellipsis}
 pre{max-width:100%}.main{overflow-x:hidden}
 .row .field{flex:1 1 100%;min-width:0}
}