@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap');
:root{
  --brand-navy:#0b223d;
  --brand-navy-deep:#08192e;
  --brand-teal:#23bfaf;
  --brand-teal-light:#e2f7f4;
  --brand-blue:#2563eb;
  --ink:#0f253e;
  --muted:#4b6178;
  --green:#16796f;
  --paper:#f6f9fc;
  --line:#dce5ef;
  --white:#ffffff;
  --accent:#d5f5ef;
}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);font-family:'DM Sans',system-ui,-apple-system,sans-serif;font-size:15px;-webkit-font-smoothing:antialiased}
header{position:sticky;top:0;z-index:20;height:84px;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 5vw;gap:24px;box-shadow:0 4px 24px rgba(11,34,61,.04)}
.brand{font:800 22px Manrope,sans-serif;text-decoration:none;color:var(--brand-navy);display:inline-flex;align-items:center;gap:12px;letter-spacing:-.6px;white-space:nowrap}
.brand img{width:42px;height:42px;object-fit:contain;border-radius:10px;box-shadow:0 4px 12px rgba(11,34,61,.12)}
.brand>span:last-child{font-size:20px;letter-spacing:-.6px;margin-left:0;font-weight:600}
.brand strong{font-weight:800;color:var(--brand-navy)}
.brand-dot{color:var(--brand-teal)}
.eyebrow{font-size:11px;letter-spacing:1.7px;font-weight:700;color:var(--muted)}
main{max-width:1320px;margin:auto;padding:0 5vw;min-height:calc(100vh - 165px)}
.landing-layout{display:block;padding:32px 0}
.tag{display:inline-flex;align-items:center;gap:8px;font-size:10px;letter-spacing:1.2px;font-weight:700;border:1px solid var(--line);padding:8px 13px;border-radius:30px}
.intro{position:relative;min-height:540px;overflow:hidden;border-radius:24px;background:var(--brand-navy);box-shadow:0 24px 60px rgba(11,34,61,.18);isolation:isolate;display:flex}
.hero-media,.hero-media img,.hero-shade{position:absolute;inset:0;width:100%;height:100%}
.hero-media img{object-fit:cover;object-position:right center;display:block}
.hero-shade{z-index:1;background:linear-gradient(90deg,rgba(7,23,43,.98) 0%,rgba(7,23,43,.92) 38%,rgba(7,23,43,.22) 68%,transparent 88%)}
.intro-content{position:relative;z-index:2;display:flex;width:100%;max-width:640px;flex-direction:column;justify-content:center;padding:clamp(38px,5vw,68px);color:white}
.intro .tag{align-self:flex-start;border-color:rgba(46,196,182,.45);color:#aef2e9;background:rgba(11,34,61,.65);backdrop-filter:blur(6px)}
.intro h1{font:700 clamp(38px,4.4vw,60px)/1.08 Manrope,sans-serif;letter-spacing:-2.4px;margin:22px 0 18px;max-width:560px}
.intro h1 em{font-style:normal;color:var(--brand-teal)}
.intro p{font-size:16px;line-height:1.72;margin:0;max-width:480px;color:#d5e3f0}
.hero-pillars{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}
.hero-pillars span{font-size:11px;font-weight:600;color:#b8d0e6;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);padding:5px 11px;border-radius:20px}
.hero-actions{display:flex;gap:16px;align-items:center;flex-wrap:wrap;margin-top:28px}
.hero-actions a{display:inline-flex;align-items:center;justify-content:center;gap:12px;font-size:13px;font-weight:700;text-decoration:none;border-radius:10px;min-height:46px;transition:transform .18s,background .18s,border-color .18s}
.hero-actions a:hover{transform:translateY(-1px)}
.demo-link{background:var(--brand-teal);color:var(--brand-navy-deep);padding:13px 20px;box-shadow:0 8px 24px rgba(35,191,175,.25)}
.demo-link:hover{background:#47d7c8}
.how-link{color:#fff;padding:12px 16px;border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.05)}
.how-link:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.45)}
.hero-motion{position:absolute;right:16px;bottom:16px;z-index:3;padding:8px 12px;border:1px solid rgba(255,255,255,.28);background:rgba(8,25,46,.82);color:#d7e5f2;font-size:11px;border-radius:8px;backdrop-filter:blur(6px)}
.hero-motion:hover{background:rgba(8,25,46,.95);border-color:rgba(255,255,255,.5)}
.hero-motion:focus-visible{outline:2px solid white;outline-offset:2px}
.header-login{display:inline-flex;align-items:center;gap:10px;color:var(--brand-navy);font-size:13px;font-weight:600;text-decoration:none;white-space:nowrap;border:1px solid var(--line);border-radius:8px;padding:10px 14px}
.header-login:hover{background:#eef4fa;border-color:#b6c7da}
.header-login:focus-visible,.hero-actions a:focus-visible,.back-home:focus-visible{outline:3px solid var(--brand-teal);outline-offset:4px}

.product-preview{min-width:0;display:flex}
.example-card{margin:0;width:100%;display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);border-radius:24px;overflow:hidden;box-shadow:0 20px 55px rgba(11,34,61,.08)}
.example-card figcaption{display:flex;align-items:center;gap:8px;border-bottom:1px solid var(--line);padding:18px 24px;color:var(--muted);font-size:10px;letter-spacing:1.3px;font-weight:700;background:#fafcfe}
.example-dot{width:8px;height:8px;background:var(--brand-teal);border-radius:50%;flex-shrink:0;box-shadow:0 0 0 4px rgba(35,191,175,.18)}
.example-number{margin-left:auto;letter-spacing:.5px;font-weight:600;font-size:10px;color:var(--brand-blue)}
.example-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;padding:12px 18px 0;background:#fafcfe;border-bottom:1px solid var(--line)}
.example-tab{background:transparent;color:var(--muted);border:1px solid transparent;border-bottom:2px solid transparent;border-radius:8px 8px 0 0;padding:9px 8px;font-size:11px;font-weight:700;letter-spacing:.2px;text-align:center;transition:color .15s,background .15s,border-color .15s}
.example-tab:hover{color:var(--brand-navy);background:#eff4f9;filter:none}
.example-tab.active{color:var(--brand-navy);background:var(--white);border-color:var(--line);border-bottom-color:var(--brand-teal)}
.example-conversation{display:grid;gap:20px;padding:24px;flex:1;align-content:center}
.example-label{font-size:9px;letter-spacing:1.4px;font-weight:700;color:var(--muted);text-transform:uppercase}
.example-question{margin-left:18px;background:#f0f5fa;border:1px solid #dde7f2;border-radius:14px 14px 4px 14px;padding:16px 18px}
.example-question p{font-size:15px;line-height:1.55;margin:8px 0 0;color:var(--brand-navy);font-weight:500}
.example-answer>.example-label{display:flex;align-items:center;gap:9px;color:var(--brand-navy)}
.answer-mark{display:inline-grid;place-items:center;background:var(--brand-teal-light);color:var(--green);width:28px;height:28px;border-radius:8px;font-size:17px;font-weight:700}
.example-answer>p{font:600 19px/1.55 Manrope,sans-serif;letter-spacing:-.4px;color:var(--brand-navy);margin:12px 0 18px}
.example-answer strong{font-weight:800;color:var(--green)}
.example-source{display:flex;align-items:center;gap:12px;padding:14px 16px;background:#f6f9fc;border:1px solid var(--line);border-radius:12px}
.source-icon{color:var(--brand-blue);font-size:20px;font-weight:700}
.example-source p{font-size:12px;font-weight:600;line-height:1.5;margin:4px 0 0;overflow-wrap:anywhere;color:var(--brand-navy)}
.example-source p>span{font-weight:500;color:var(--muted);white-space:nowrap}
.example-note{font-size:11px;line-height:1.5;color:var(--muted);margin:0;padding:14px 24px;border-top:1px solid var(--line);background:#fafcfe}

/* App & Auth Workspace Styles */
.card{background:var(--white);border:1px solid var(--line);border-radius:16px;padding:30px}
.auth-card{box-shadow:0 15px 50px rgba(11,34,61,.08)}
.auth-card h2{font:600 28px Manrope;margin:12px 0 30px}
label{display:block;font-size:12px;font-weight:600}
input,textarea{display:block;width:100%;background:#fafcfe;border:1px solid var(--line);border-radius:8px;padding:13px 14px;margin:9px 0 20px;color:var(--ink);font:inherit;line-height:1.5}
textarea{resize:vertical}
input:focus,textarea:focus{outline:2px solid var(--brand-teal);outline-offset:2px}
button{font:600 13px 'DM Sans',sans-serif;cursor:pointer;background:var(--brand-navy);color:white;border:1px solid transparent;border-radius:8px;padding:13px 18px;transition:background .15s,transform .15s}
button:hover{filter:brightness(1.08)}
button:disabled{opacity:.5;cursor:wait}
.auth-card button{width:100%}
.ghost{background:transparent;color:var(--brand-navy);border-color:transparent}
.secondary{background:#edf3f9;color:var(--ink);border-color:var(--line)}
.hint{font-size:12px;line-height:1.65;color:var(--muted)}
.auth-card .hint{border-top:1px solid var(--line);padding-top:20px;margin-bottom:0}
.hidden{display:none!important}
.workspace-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:34px}
.workspace-heading h1{font:600 30px Manrope;letter-spacing:-1px;margin:9px 0 24px}
.tabs{display:flex;border-bottom:1px solid var(--line);gap:24px;margin-bottom:25px}
.tabs button{background:transparent;color:var(--muted);border-radius:0;padding:15px 0;border-bottom:2px solid transparent}
.tabs button.active{color:var(--brand-navy);border-bottom-color:var(--brand-teal)}
.notice{background:#fff8db;border:1px solid #f0df99;border-radius:8px;padding:14px;font-size:13px;line-height:1.5}
.chat-layout{display:grid;grid-template-columns:240px 1fr;gap:20px}
.history{padding:20px;min-height:500px}
.history h3{font-size:12px;color:var(--muted);margin:26px 0 15px}
.stack{display:grid;gap:10px}
.history .stack button{background:transparent;color:var(--ink);text-align:left;border:1px solid var(--line);font-size:12px}
.chat-card{padding:0;overflow:hidden}
.messages{height:440px;overflow:auto;padding:28px}
.empty{text-align:center;padding:65px 10px;color:var(--muted)}
.empty h2{font:600 24px Manrope;color:var(--ink)}
.empty p{line-height:1.7;font-size:14px}
.big-dot{display:inline-grid;place-items:center;font-size:35px;border-radius:50%;width:68px;height:68px;background:var(--accent);color:var(--green)}
#chat-form{padding:18px;border-top:1px solid var(--line)}
#question{margin:0;border:0;background:transparent;min-height:65px}
.chat-actions{display:flex;justify-content:space-between;align-items:center}
.audio-label{cursor:pointer;color:var(--muted)}
.audio-label input{width:190px;font-size:10px;padding:5px;margin:5px 0}
.message{white-space:pre-wrap;line-height:1.65;padding:15px 18px;border-radius:12px;margin-bottom:18px;max-width:90%;overflow-wrap:anywhere}
.message.user{background:#e8f1fa;margin-left:auto}
.message.assistant{border:1px solid var(--line);background:#fafcfe}
.sources{display:flex;gap:6px;flex-wrap:wrap;margin-top:12px}
.source{font-size:10px;border-radius:5px;background:var(--brand-teal-light);color:var(--green);padding:3px 7px}
.section-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;gap:20px}
h2{font:600 23px Manrope;letter-spacing:-.7px}
.section-heading p,.channel-grid p{color:var(--muted);line-height:1.65}
.upload{margin-bottom:20px}
.upload input{max-width:500px}
.document-list{display:grid;gap:10px}
.document-row{display:flex;align-items:center;justify-content:space-between;gap:15px;border:1px solid var(--line);background:white;border-radius:10px;padding:16px 22px}
.document-row small{display:block;color:var(--muted);margin-top:6px}
.channel-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.row{display:flex;gap:8px;flex-wrap:wrap}
.check{display:flex;align-items:center;gap:10px;line-height:1.5}
.check input{width:auto;margin:0}
.channel-grid form{border-top:1px solid var(--line);padding-top:20px;margin-top:20px}
.channel-grid form input,.channel-grid form textarea{margin-bottom:0}
.code{font-family:monospace;overflow-wrap:anywhere;background:#f0f5fa;border-radius:8px;padding:14px;min-height:0}
.code:empty{display:none}
.activity{margin-top:20px}
.event{display:flex;justify-content:space-between;gap:20px;font-size:12px;padding:12px 0;border-top:1px solid var(--line)}
.toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);padding:14px 24px;border-radius:10px;background:var(--brand-navy);color:white;z-index:30;max-width:90vw;box-shadow:0 10px 32px rgba(11,34,61,.25);font-size:13px;font-weight:500}
.login-layout{max-width:430px;margin:0 auto;padding:48px 0}
.back-home{display:inline-block;color:var(--brand-blue);font-size:13px;text-decoration:none;margin-bottom:24px;font-weight:600}
.login-layout .auth-card{width:100%}
footer{max-width:1320px;margin:40px auto 0;padding:28px 5vw;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:25px;font-size:12px;color:var(--muted)}
footer a{color:var(--brand-navy);text-decoration:none;font-weight:600}
footer a:hover{color:var(--brand-blue)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}

@media(max-width:1000px) and (min-width:801px){
  .landing-layout .intro-content{padding:32px 26px 62px}
  .landing-layout h1{font-size:40px;letter-spacing:-2px}
  .hero-actions{gap:10px}
  .hero-actions a{font-size:12px}
  .example-conversation{padding:20px 18px}
  .example-question{margin-left:8px}
}
@media(max-width:860px){
  header{height:auto;min-height:74px;gap:12px}
  .landing-layout{grid-template-columns:minmax(0,1fr);gap:24px;padding:24px 0}
  .intro,.intro-content{min-height:460px}
  .intro-content{padding:34px 28px 66px}
  .intro h1{font-size:clamp(34px,7vw,50px);letter-spacing:-1.8px}
  .hero-media img{object-position:62% center}
  .hero-shade{background:linear-gradient(90deg,rgba(7,25,45,.97),rgba(7,25,45,.75))}
  .product-preview{width:100%}
  .chat-layout,.channel-grid{grid-template-columns:1fr}
  .history{min-height:auto}
  .history .stack{display:flex;overflow:auto}
  .history h3{display:none}
  .history .stack button{min-width:150px;margin-top:10px}
  .workspace-heading>.tag{display:none}
  .workspace-heading h1{font-size:25px}
  .messages{height:380px;padding:16px}
  .card{padding:22px}
  .chat-card{padding:0}
  footer{flex-direction:column;align-items:flex-start;gap:10px}
  .document-row{align-items:flex-start}
  .section-heading{align-items:flex-start}
}
@media(max-width:460px){
  .brand img{width:36px;height:36px}
  .brand>span:last-child{font-size:17px}
  .intro,.intro-content{min-height:420px}
  .intro-content{padding:28px 22px 60px}
  .intro h1{font-size:34px;letter-spacing:-1.5px}
  .intro p{font-size:14.5px}
  .hero-motion{right:12px;bottom:12px}
  .example-tabs{padding:10px 12px 0}
  .example-tab{font-size:10px;padding:8px 4px}
  .example-conversation{padding:20px 16px}
  .example-question{margin-left:6px;padding:14px}
  .example-answer>p{font-size:17px}
}