html{color-scheme:light}
:root{
  --bg:#f3f5f6; --surface:#ffffff; --surface-2:#e9edf0; --line:#d0d3d4;
  --text:#002b49; --muted:#4f6577; --navy:#002b49; --pink:#d50058; --blue:#0082ca; --cyan:#64d0e4;
  --pink-soft:#fde6ee; --blue-soft:#e3f2fb; --ok:#1a9a5a; --warn:#c77a00;
  --shadow:0 10px 30px rgba(0,43,73,.08);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    color-scheme:dark;
    --bg:#071a2a; --surface:#0e2a42; --surface-2:#153755; --line:#25476a;
    --text:#e8f0f6; --muted:#9db3c6; --navy:#e8f0f6; --pink:#ff3d86; --blue:#3fb0ff; --cyan:#64d0e4;
    --pink-soft:#3a1024; --blue-soft:#0f3350; --ok:#3ccf84; --warn:#ffb23f;
    --shadow:0 10px 30px rgba(0,0,0,.35);
  }
}
:root[data-theme="dark"]{
  color-scheme:dark;
  --bg:#071a2a; --surface:#0e2a42; --surface-2:#153755; --line:#25476a;
  --text:#e8f0f6; --muted:#9db3c6; --navy:#e8f0f6; --pink:#ff3d86; --blue:#3fb0ff; --cyan:#64d0e4;
  --pink-soft:#3a1024; --blue-soft:#0f3350; --ok:#3ccf84; --warn:#ffb23f;
  --shadow:0 10px 30px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
[hidden]{display:none!important}
body{margin:0;background:var(--bg);color:var(--text);font-family:"Trirong",Georgia,"Times New Roman",serif;font-size:17px;line-height:1.6}
h1,h2,h3,.sans{font-family:"Prompt","Kanit",system-ui,sans-serif}
h1,h2,h3{margin:0;text-wrap:balance;line-height:1.2}
.wrap{max-width:860px;margin:0 auto;padding-inline:16px;padding-block:28px 56px;display:grid;gap:22px}
.wrap>*,header>*,.card>*{min-width:0;max-width:100%}
html,body{overflow-x:hidden}
header{display:grid;grid-template-columns:1fr auto;grid-template-areas:"text logo" "engine logo";align-items:end;column-gap:20px;row-gap:12px}
header>div:first-child{grid-area:text}
.logo{grid-area:logo;width:150px;height:150px;object-fit:contain;justify-self:end;align-self:start;filter:drop-shadow(0 6px 14px rgba(213,0,88,.22))}
.engine{grid-area:engine;justify-self:start}
@media (max-width:640px){header{grid-template-columns:1fr auto;grid-template-areas:"text logo" "engine engine";column-gap:12px;align-items:start}.logo{justify-self:end;width:96px;height:96px}}
.eyebrow{font-family:"Prompt",sans-serif;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--pink);font-weight:600}
h1{font-size:clamp(26px,5vw,36px);color:var(--navy)}
h1 span{color:var(--pink)}
.tagline{font-family:"Prompt",sans-serif;font-size:clamp(16px,3.2vw,20px);font-weight:600;color:var(--blue);margin:6px 0 0;line-height:1.35}
.tagline span{color:var(--pink)}
.sub{color:var(--muted);margin:8px 0 0;max-width:60ch;font-size:14.5px}
.disclaimer{margin:8px 0 0;font-size:13.5px;color:var(--muted);max-width:60ch;padding-left:10px;border-left:3px solid var(--cyan)}
.quota{background:var(--surface);border-radius:18px;padding:24px;box-shadow:var(--shadow);border-top:5px solid var(--cyan);display:grid;gap:10px}
.quota h2{font-size:clamp(20px,4vw,26px);color:var(--navy)}
.quota p{margin:0}
.quota .btnrow{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.btn.cyan{background:var(--blue);color:#fff}
.demo-badge{display:inline-block;font-family:"Prompt",sans-serif;font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--blue);background:var(--blue-soft);border-radius:999px;padding:3px 10px;margin-bottom:6px}
#demoBar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;background:var(--blue-soft);border:1px solid var(--cyan);border-radius:14px;padding:12px 16px;font-size:15px}
#demoBar b{font-family:"Prompt",sans-serif}
.engine{display:flex;gap:6px;background:var(--surface-2);padding:4px;border-radius:999px;font-family:"Prompt",sans-serif;font-size:13px}
.engine button{border:0;background:transparent;color:var(--muted);padding:6px 12px;border-radius:999px;cursor:pointer;font:inherit}
.engine button:hover{color:var(--navy)}
.engine button.on{background:var(--surface);color:var(--navy);box-shadow:0 1px 4px rgba(0,0,0,.12);font-weight:600}
.card{background:var(--surface);border-radius:18px;padding:20px;box-shadow:var(--shadow)}
label.sans{display:block;font-weight:600;font-size:15px;margin-bottom:8px}
textarea{width:100%;min-height:96px;resize:vertical;border:1.5px solid var(--line);border-radius:12px;padding:12px 14px;font:inherit;font-size:17px;color:var(--text);background:var(--surface)}
textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-soft)}
textarea.over{border-color:var(--pink);box-shadow:0 0 0 3px var(--pink-soft)}
.meta{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;margin-top:8px;font-size:14px;color:var(--muted)}
.count{font-family:"Prompt",sans-serif;font-variant-numeric:tabular-nums}
.count.over{color:var(--pink);font-weight:600}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.chip{border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:999px;padding:5px 12px;font-size:14px;cursor:pointer;font-family:"Trirong",serif}
.chip:hover{border-color:var(--blue);color:var(--blue)}
.actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:16px}
.btn{font-family:"Prompt",sans-serif;font-weight:600;font-size:16px;border:0;border-radius:12px;padding:12px 22px;cursor:pointer}
.btn.primary{background:var(--pink);color:#fff}
.btn.primary:hover{filter:brightness(1.08)}
.btn.primary[disabled]{opacity:.55;cursor:not-allowed}
.btn.ghost{background:transparent;color:var(--muted);border:1px solid var(--line)}
.status{font-size:14px;color:var(--muted)}
.status.err{color:var(--pink)}
#result{display:grid;gap:16px}
.verdict{display:grid;grid-template-columns:1fr auto;gap:14px;align-items:start;border-top:5px solid var(--pink)}
.verdict .k{font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-family:"Prompt",sans-serif;font-weight:600}
.verdict h2{font-size:clamp(24px,4.5vw,32px);margin-top:2px;color:var(--navy)}
.verdict .why{margin:10px 0 0;color:var(--text)}
.conf{min-width:120px;text-align:right}
.conf .n{font-family:"Prompt",sans-serif;font-size:38px;font-weight:700;color:var(--pink);line-height:1;font-variant-numeric:tabular-nums}
.conf .l{font-size:13px;color:var(--muted)}
.bar{height:8px;background:var(--surface-2);border-radius:999px;overflow:hidden;margin-top:8px}
.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--blue),var(--pink));border-radius:999px;transition:width .5s ease}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media (max-width:640px){.grid3{grid-template-columns:1fr}.verdict{grid-template-columns:1fr}.conf{text-align:left}}
.tile{background:var(--surface-2);border-radius:14px;padding:14px 16px}
.tile .t{font-family:"Prompt",sans-serif;font-size:13px;color:var(--muted);font-weight:600}
.tile .v{font-family:"Prompt",sans-serif;font-size:22px;font-weight:700;color:var(--navy);margin-top:2px;font-variant-numeric:tabular-nums}
.tile .d{font-size:14px;color:var(--muted)}
.tile .v .cl{font-size:12.5px;color:var(--muted);font-weight:500;margin-right:4px}
.tile .v small{font-size:14px;color:var(--pink);font-weight:600}
#rCost{font-size:18px;line-height:1.5}
.dots{display:flex;gap:5px;margin-top:6px}
.dots b{width:22px;height:8px;border-radius:4px;background:var(--line)}
.dots b.on{background:var(--blue)}
.rows{display:grid;gap:2px}
.row{display:grid;grid-template-columns:minmax(150px,1fr) 1.6fr minmax(120px,34%) 56px;grid-template-areas:"m f b p";column-gap:12px;align-items:center;padding:10px 8px;border-bottom:1px solid var(--line);font-size:15px}
.row:last-child{border-bottom:0}
.rm{grid-area:m;font-family:"Prompt",sans-serif;font-weight:600}
.rf{grid-area:f;font-size:14px;color:var(--muted)}
.rb{grid-area:b}
.rp{grid-area:p;font-family:"Prompt",sans-serif;font-variant-numeric:tabular-nums;text-align:right;font-weight:600}
.pbar{height:6px;background:var(--surface-2);border-radius:999px;overflow:hidden}
.pbar i{display:block;height:100%;background:var(--blue);border-radius:999px}
.row.win .rm,.row.win .rp{color:var(--pink)}
.row.win .pbar i{background:var(--pink)}
.row.win{background:var(--pink-soft);border-radius:12px;border-bottom:0}
@media (max-width:640px){
  .row{grid-template-columns:1fr auto;grid-template-areas:"m p" "b b" "f f";row-gap:6px;padding:12px 10px}
  .rf{font-size:13px;line-height:1.45}
}
.h2{font-size:18px;color:var(--navy);margin-bottom:10px}
.btn.more{width:100%;margin-top:10px;font-size:14px;padding:10px}
.dir summary{cursor:pointer;font-weight:600;font-size:15px;color:var(--navy);list-style:none;display:flex;align-items:center;gap:8px}
.dir summary::-webkit-details-marker{display:none}
.dir summary::after{content:"▾";margin-left:auto;color:var(--muted);transition:transform .2s}
.dir[open] summary::after{transform:rotate(180deg)}
.dir .gh{font-family:"Prompt",sans-serif;font-weight:600;font-size:14px;color:var(--pink);margin:14px 0 6px;display:flex;align-items:center;gap:8px}
.dir .gh span{font-size:12px;color:var(--muted);font-weight:500}
.dir .di{display:grid;grid-template-columns:minmax(150px,1fr) 2fr;gap:2px 12px;padding:7px 0;border-bottom:1px dashed var(--line);font-size:14px}
.dir .di b{font-family:"Prompt",sans-serif;font-weight:600}
.dir .di span{color:var(--muted);font-size:13.5px}
.gtag{display:inline-block;font-family:"Prompt",sans-serif;font-size:12px;font-weight:600;color:var(--blue);background:var(--blue-soft);border-radius:999px;padding:2px 10px;margin-left:6px;vertical-align:middle}
.rows .gh{font-family:"Prompt",sans-serif;font-weight:600;font-size:13.5px;color:var(--blue);margin:12px 0 4px;padding-left:8px}
.rows .gh:first-child{margin-top:0}
@media (max-width:640px){.dir .di{grid-template-columns:1fr}}
.fb{display:flex;align-items:center;gap:8px;margin-top:12px;font-size:14px;color:var(--muted);flex-wrap:wrap}
.fb button{border:1px solid var(--line);background:var(--surface);border-radius:999px;width:40px;height:36px;font-size:18px;cursor:pointer}
.fb button.on{border-color:var(--pink);background:var(--pink-soft)}
.fb .fbmsg{font-size:13px;color:var(--blue)}
.peer{margin-top:10px}
.peer .pl{font-family:"Prompt",sans-serif;font-size:12.5px;font-weight:600;letter-spacing:.04em;color:var(--blue);margin-bottom:6px}
.pm{display:grid;grid-template-columns:minmax(150px,1fr) 2fr auto;gap:4px 12px;align-items:center;background:var(--surface-2);border-radius:12px;padding:10px 14px;margin-bottom:6px;font-size:14.5px}
.pm b{font-family:"Prompt",sans-serif;font-weight:600;color:var(--navy)}
.pm span{color:var(--muted);font-size:13.5px}
.pm i{font-style:normal;font-family:"Prompt",sans-serif;font-size:13px;color:var(--pink);white-space:nowrap}
@media (max-width:640px){.pm{grid-template-columns:1fr auto;grid-template-areas:"n c" "f f"}.pm b{grid-area:n}.pm i{grid-area:c}.pm span{grid-area:f}}
.copybox{display:flex;gap:10px;align-items:flex-start;background:var(--surface-2);border-radius:12px;padding:12px 14px;font-size:15px}
.copybox pre{margin:0;white-space:pre-wrap;font-family:"Trirong",serif;flex:1}
.copybox button{flex:none}
.small{font-size:14px;color:var(--muted)}
.note{border-left:4px solid var(--cyan);background:var(--blue-soft);border-radius:0 12px 12px 0;padding:12px 16px;font-size:15px}
.note b{font-family:"Prompt",sans-serif}
.hist{display:grid;gap:8px}
.hist div{display:flex;justify-content:space-between;gap:10px;font-size:15px;border-bottom:1px dashed var(--line);padding-bottom:6px}
.hist div span:last-child{font-family:"Prompt",sans-serif;white-space:nowrap;color:var(--blue)}
footer{text-align:center;font-size:13px;color:var(--muted)}
.btn:focus-visible,.chip:focus-visible,.engine button:focus-visible{outline:3px solid var(--cyan);outline-offset:2px}
@media (prefers-reduced-motion:reduce){.bar i{transition:none}}

.chips-hint{display:none;font-size:12.5px;color:var(--muted);margin-top:2px}
/* ===== mobile ===== */
@media (max-width:640px){
  body{font-size:16px}
  .wrap{padding-block:16px 40px;gap:14px}
  h1{font-size:28px}
  .sub{font-size:15px}
  .disclaimer{font-size:12.5px}
  .engine{width:100%;display:grid;grid-template-columns:1fr 1fr}
  .engine button{padding:11px 8px;text-align:center;font-size:14px;min-height:44px}
  .card{padding:16px 14px;border-radius:16px}
  textarea{min-height:88px;font-size:16px}
  .meta{font-size:13px}
  .meta span:first-child{display:none}
  .chips{display:flex;flex-wrap:nowrap;overflow-x:auto;gap:8px;margin:12px -14px 0;padding:2px 14px 6px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:none}
  .chips::-webkit-scrollbar{display:none}
  .chip{flex:0 0 auto;max-width:78vw;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-height:42px;padding:9px 14px;scroll-snap-align:start;font-size:14.5px}
  .chips-hint{display:block}
  .actions{position:sticky;bottom:0;z-index:5;margin:14px -14px -16px;padding:10px 14px calc(10px + env(safe-area-inset-bottom,0px));background:var(--surface);border-top:1px solid var(--line);border-radius:0 0 16px 16px}
  .btn{min-height:48px;font-size:16px;padding:12px 18px}
  .btn.primary{flex:1;text-align:center}
  .status{flex-basis:100%}
  .verdict{padding:16px 14px}
  .verdict h2{font-size:26px}
  .conf{display:flex;align-items:baseline;gap:8px}
  .conf .n{font-size:30px}
  .grid3{grid-template-columns:1fr;gap:8px}
  .tile{display:grid;grid-template-columns:1fr auto;grid-template-areas:"t v" "d v" "x v";column-gap:12px;align-items:center;padding:10px 14px;border-radius:12px}
  .tile .t{grid-area:t;font-size:11.5px}
  .tile .v{grid-area:v;font-size:20px;text-align:right;margin:0}
  .tile .d{grid-area:d;font-size:12.5px}
  .dots{grid-area:x;margin-top:4px}
  .dots b{width:16px;height:6px}
  h1{font-size:26px}
  .logo{width:84px;height:84px}
  .copybox{flex-direction:column;align-items:stretch}
  .copybox button{width:100%}
  .quota{padding:18px 16px}
  .quota .btnrow .btn{flex:1;text-align:center}
  #demoBar{flex-direction:column;align-items:stretch}
  .hist div{flex-direction:column;gap:2px}
  .note{font-size:14px}
}