:root{
  --navy:#07102a; --navy2:#0b1a3d; --black:#03060f; --gold:#aab4c8; --gold2:#e3e8f2; --gold3:#7d8aa6; --eb:#2f6bff; --eb2:#5b9bff;
  --blue:#4d8dff; --white:#f4f6fb; --muted:#9aa7c4; --line:rgba(160,185,230,.22); --card:rgba(255,255,255,.04);
  --radius:16px; --serif:"Cormorant Garamond",Georgia,serif; --sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--black)}
body{margin:0;font-family:var(--sans);color:var(--white);background:radial-gradient(1200px 700px at 80% -10%,#12306b55,transparent) no-repeat top,linear-gradient(180deg,var(--navy),var(--black) 90%);background-color:var(--black);min-height:100vh;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:var(--gold2);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{font-family:var(--serif);font-weight:600;line-height:1.15;margin:0 0 .5em}
h1{font-size:clamp(2.2rem,6vw,3.8rem)} h2{font-size:clamp(1.6rem,4vw,2.3rem)} h3{font-size:1.35rem}
.gold{background:linear-gradient(120deg,var(--gold2),var(--gold) 45%,var(--gold3));-webkit-background-clip:text;background-clip:text;color:transparent}
.wrap{max-width:1100px;margin:0 auto;padding:0 20px}
section{padding:36px 0}
.muted{color:var(--muted)}
.fade{animation:fadeUp .6s ease both}
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}

header.top{position:sticky;top:0;z-index:50;background:rgba(5,10,26,.82);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;gap:14px;height:64px}
.logo{display:flex;align-items:center;gap:10px;color:var(--white);font-family:var(--serif);font-size:1.5rem;letter-spacing:.16em;font-weight:700}
.logo:hover{text-decoration:none}
.logo small{display:block;font-family:var(--sans);font-size:.55rem;letter-spacing:.2em;color:var(--gold);font-weight:500;margin-top:-4px}
nav.main{display:flex;gap:4px;margin-left:auto;align-items:center}
nav.main a{color:var(--white);padding:8px 10px;border-radius:10px;font-size:.92rem;white-space:nowrap}
nav.main a:hover{background:var(--card);text-decoration:none}
nav.main a.on{color:var(--gold2)}
.tools{display:flex;gap:8px;align-items:center}
select,input,textarea{font:inherit;color:var(--white);background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:12px;padding:11px 13px;width:100%;outline:none}
select option{color:#111}
select:focus,input:focus,textarea:focus{border-color:var(--gold);box-shadow:0 0 0 3px rgba(160,185,230,.18)}
.tools select{width:auto;padding:8px 10px}
textarea{min-height:120px;resize:vertical}
label{display:block;font-size:.85rem;color:var(--muted);margin:14px 0 6px}
.burger{display:none;background:none;border:1px solid var(--line);color:var(--gold2);border-radius:10px;width:42px;height:42px;font-size:1.3rem;cursor:pointer}

.btn{display:inline-block;border:0;cursor:pointer;font:inherit;font-weight:600;padding:12px 22px;border-radius:12px;color:#fff;background:linear-gradient(120deg,var(--eb2),var(--eb) 60%,#1b47d6);transition:transform .15s,box-shadow .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(47,107,255,.45);text-decoration:none}
.btn.ghost{background:transparent;color:var(--gold2);border:1px solid var(--eb2)}
.btn.small{padding:7px 12px;font-size:.85rem}
.btn.danger{background:#7f1d1d;color:#fff}
.btn:disabled{opacity:.55;cursor:wait;transform:none}

.hero{padding:70px 0 50px;text-align:center}
.hero p{max-width:640px;margin:0 auto 26px;color:var(--muted);font-size:1.1rem}
.hero .row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:transform .2s,border-color .2s,background .2s;display:block;color:var(--white)}
a.card:hover{transform:translateY(-4px);border-color:var(--gold);background:rgba(255,255,255,.06);text-decoration:none}
.card ul{margin:10px 0 0;padding-left:18px;color:var(--muted);font-size:.92rem}
.list{display:grid;gap:10px}
.row-item{display:flex;gap:12px;align-items:center;justify-content:space-between;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 16px;flex-wrap:wrap}
.row-item a{color:var(--white)}
.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:.78rem;font-weight:600;background:rgba(59,130,246,.18);color:#9cc2ff;border:1px solid rgba(59,130,246,.4)}
.s-completed,.s-paid{background:rgba(34,197,94,.15);color:#86efac;border-color:rgba(34,197,94,.4)}
.s-cancelled{background:rgba(239,68,68,.15);color:#fca5a5;border-color:rgba(239,68,68,.4)}
.s-awaiting_payment,.s-awaiting_approval,.s-revision_required{background:rgba(160,185,230,.15);color:var(--gold2);border-color:var(--line)}
.form{max-width:520px;margin:0 auto}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.msg{padding:12px 14px;border-radius:12px;margin:14px 0;font-size:.92rem}
.msg.ok{background:rgba(34,197,94,.12);border:1px solid rgba(34,197,94,.4)}
.msg.err{background:rgba(239,68,68,.12);border:1px solid rgba(239,68,68,.4)}
.steps{counter-reset:s}
details{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 16px;margin-bottom:10px}
summary{cursor:pointer;font-weight:600}
details p{color:var(--muted);margin:10px 0 0}
table{width:100%;border-collapse:collapse;font-size:.92rem}
th,td{text-align:left;padding:10px 8px;border-bottom:1px solid rgba(255,255,255,.08);vertical-align:top}
th{color:var(--gold2);font-weight:600}
.scroll{overflow-x:auto}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px}
.stat b{display:block;font-family:var(--serif);font-size:2rem;color:var(--gold2)}
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}
.tabs a{padding:8px 14px;border:1px solid var(--line);border-radius:999px;color:var(--white);font-size:.9rem}
.tabs a.on{background:linear-gradient(120deg,var(--eb2),var(--eb));color:#fff;font-weight:600}
.tabs a:hover{text-decoration:none}
.thread{display:grid;gap:8px;align-content:start;max-height:340px;overflow:auto;margin:12px 0}
.bubble{max-width:85%;padding:10px 13px;border-radius:14px;white-space:pre-wrap;word-wrap:break-word;overflow-wrap:anywhere}
.bubble.me{margin-left:auto;background:linear-gradient(120deg,#17306b,#1d3f8f);border:1px solid rgba(59,130,246,.45)}
.bubble.them{background:var(--card);border:1px solid var(--line)}
.bubble small{display:block;color:var(--muted);font-size:.72rem;margin-top:4px}
.bubble pre{background:#02050f;padding:10px;border-radius:10px;overflow:auto;white-space:pre-wrap;margin:8px 0}
.bubble code{background:rgba(255,255,255,.08);padding:1px 5px;border-radius:5px}
.chat{display:grid;grid-template-columns:240px 1fr;gap:16px;min-height:60vh}
.chat aside{display:flex;flex-direction:column;gap:8px;max-height:70vh;overflow:auto}
.chat aside a{display:block;padding:9px 11px;border-radius:10px;border:1px solid var(--line);color:var(--white);font-size:.88rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chat aside a.on{border-color:var(--gold);background:rgba(160,185,230,.1)}
.chat .main{display:flex;flex-direction:column}
.chat .thread{flex:1;max-height:56vh;min-height:300px}
.composer{display:flex;gap:8px;align-items:flex-end}
.composer textarea{min-height:48px;max-height:140px;flex:1}
.inline{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.inline>*{flex:1;min-width:120px}
.inline .btn{flex:0 0 auto}
footer.foot{margin-top:50px;border-top:1px solid var(--line);padding:28px 0;color:var(--muted);font-size:.88rem}
footer.foot .links{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:10px}

@media(max-width:860px){
  .burger{display:block;margin-left:auto}
  nav.main{display:none;position:absolute;left:0;right:0;top:64px;flex-direction:column;align-items:stretch;background:rgba(5,10,26,.97);padding:12px 20px 18px;border-bottom:1px solid var(--line)}
  nav.main.open{display:flex}
  .tools{margin-left:0}
  .chat{grid-template-columns:1fr}
  .chat aside{flex-direction:row;overflow-x:auto;max-height:none}
  .chat aside a{min-width:150px}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

.logo img{display:block;height:40px;width:auto}
.logo .ai{color:var(--blue);font-weight:700}
.hero-logo{display:block;width:min(340px,78%);height:auto;margin:0 auto 6px}

/* MERION AI platform */
.slogan{letter-spacing:.32em;font-size:.8rem;color:var(--muted);margin:0 0 18px!important}
.taskbox{max-width:760px;margin:26px auto 0;text-align:left;box-shadow:0 0 60px rgba(47,107,255,.18);background:rgba(255,255,255,.05);backdrop-filter:blur(8px)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}
.chip{font:inherit;font-size:.85rem;color:var(--white);background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:999px;padding:6px 12px;cursor:pointer}
.chip.on,.chip:hover{border-color:var(--eb2);background:rgba(47,107,255,.2)}
.price{font-family:var(--serif);font-size:2rem;margin:4px 0}.price small{font-size:.9rem;color:var(--muted)}
.card.hl{border-color:var(--eb2);box-shadow:0 0 30px rgba(47,107,255,.25)}
.tgbox{display:flex;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap}.tgbox h3{margin:0 0 4px}
.bubble .srcs{margin-top:8px;font-size:.82rem}.bubble .cp{margin-top:8px}
.bubble img.gen{display:block;max-width:100%;border-radius:12px;margin-top:6px}
.chat aside a.newc{border-color:var(--eb2);color:var(--gold2)}
.out{white-space:pre-wrap;overflow-wrap:anywhere}.out pre{background:#02050f;padding:10px;border-radius:10px;overflow:auto}
.meter{height:8px;background:rgba(255,255,255,.08);border-radius:99px;margin:6px 0 14px;overflow:hidden;display:block}.meter i{display:block;height:100%;background:linear-gradient(90deg,var(--eb),var(--gold2))}
.s-running,.s-planning,.s-verifying{background:rgba(47,107,255,.2);color:#bcd3ff;border-color:rgba(91,155,255,.5)}
.s-failed{background:rgba(239,68,68,.15);color:#fca5a5;border-color:rgba(239,68,68,.4)}
.s-done{background:rgba(34,197,94,.15);color:#86efac;border-color:rgba(34,197,94,.4)}
.chart{display:flex;gap:4px;align-items:flex-end;height:110px;margin:10px 0}.chart div{flex:1;background:linear-gradient(180deg,var(--eb2),var(--eb));border-radius:4px 4px 0 0;min-height:2px}
.chart.err div{background:#ef4444}