:root{
  --bg:#0c1117; --panel:#161e2a; --panel2:#1f2a39;
  --line:#283546; --line2:#34465c;
  --ink:#eaf1f9; --muted:#90a3ba; --brand:#4f9dff; --brand2:#7b6cff;
  --good:#33c27f; --warn:#ffb020; --bad:#ff5d5d;
  --radius:14px; --radius-sm:9px; --radius-pill:999px;
  --shadow:0 1px 2px rgba(0,0,0,.28),0 12px 30px -16px rgba(0,0,0,.6);
  --shadow-lg:0 30px 70px -28px rgba(0,0,0,.75);
  --ring:0 0 0 3px rgba(79,157,255,.22);
}
*{box-sizing:border-box}
.fa-solid,.fa-regular,.fa-brands{font-size:.95em;line-height:1}
.brand .fa-solid{color:var(--brand)}
body{margin:0;font:15px/1.6 "Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);color:var(--ink);
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;
  background-image:
    radial-gradient(820px 520px at 100% -12%,rgba(79,157,255,.09),transparent 60%),
    radial-gradient(720px 520px at -12% -4%,rgba(123,108,255,.07),transparent 55%);
  background-attachment:fixed}
a{color:var(--brand);text-decoration:none;transition:color .12s}
a:hover{text-decoration:underline}
h1{font-size:1.6rem;font-weight:700;letter-spacing:-.015em;margin:.2rem 0 1rem}
h2{font-size:1.12rem;font-weight:600;letter-spacing:-.01em;margin:0 0 .75rem}
h3{font-size:.78rem;margin:0 0 .5rem;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;font-weight:600}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* top bar */
.topbar{display:flex;align-items:center;gap:1rem;padding:.7rem 1.2rem;
  background:rgba(18,25,35,.72);backdrop-filter:saturate(150%) blur(14px);-webkit-backdrop-filter:saturate(150%) blur(14px);
  border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10;flex-wrap:wrap}
.brand{font-weight:800;font-size:1.08rem;letter-spacing:-.02em;color:var(--ink)}
.topbar .search{flex:1;max-width:420px}
.topbar .search input{width:100%;padding:.5rem .9rem;border-radius:var(--radius-pill);border:1px solid var(--line);background:var(--bg);color:var(--ink)}
.topbar nav{display:flex;align-items:center;gap:1.1rem;flex-wrap:wrap}
.topbar nav a{color:var(--muted);font-weight:500}
.topbar nav a:hover{color:var(--ink);text-decoration:none}
.topbar nav a.active{color:var(--ink)}

main.app{max-width:1100px;margin:1.8rem auto;padding:0 1.2rem}
main.centered{max-width:420px;margin:7vh auto;padding:0 1.2rem}

/* cards / grid */
.grid{display:grid;gap:1rem}
.cols-4{grid-template-columns:repeat(4,1fr)}
.cols-3{grid-template-columns:repeat(3,1fr)}
.cols-2{grid-template-columns:repeat(2,1fr)}
@media(max-width:760px){.cols-4,.cols-3,.cols-2{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.cols-4,.cols-3,.cols-2{grid-template-columns:1fr}}
.card{background:var(--panel);
  background:linear-gradient(180deg,var(--panel),color-mix(in srgb,var(--panel) 86%,#000));
  border:1px solid var(--line);border-radius:var(--radius);padding:1.2rem;box-shadow:var(--shadow)}
.card.kpi .big{font-size:2.1rem;font-weight:700;letter-spacing:-.02em}
.card.kpi .sub{color:var(--muted);font-size:.85rem}
.muted{color:var(--muted)}
.right{text-align:right}
.row{display:flex;gap:1rem;align-items:flex-start;flex-wrap:wrap}
.row.between{justify-content:space-between;align-items:center}
.spacer{flex:1}
.stack>*+*{margin-top:1rem}

/* lists & tables */
table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:.65rem .7rem;border-bottom:1px solid var(--line)}
th{color:var(--muted);font-weight:600;font-size:.72rem;text-transform:uppercase;letter-spacing:.05em}
tbody tr{transition:background .12s}
tbody tr:hover td{background:rgba(255,255,255,.025)}
tr:last-child td{border-bottom:none}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}

/* forms */
label{display:block;font-size:.85rem;color:var(--muted);margin:.6rem 0 .2rem}
input,select,textarea{width:100%;padding:.6rem .8rem;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--bg);color:var(--ink);font:inherit;transition:border-color .12s,box-shadow .12s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand);box-shadow:var(--ring)}
textarea{min-height:80px;resize:vertical}
.inline{display:inline}
.form-row{display:flex;gap:.8rem;flex-wrap:wrap}
.form-row>div{flex:1;min-width:140px}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:.45rem;padding:.58rem 1.05rem;border-radius:10px;
  border:1px solid transparent;background:linear-gradient(180deg,var(--brand),#3f8be8);color:#fff;
  font:inherit;font-weight:600;cursor:pointer;
  box-shadow:0 1px 2px rgba(0,0,0,.35),0 8px 20px -10px rgba(79,157,255,.7);
  transition:transform .12s ease,filter .12s ease,box-shadow .12s ease,background .12s}
.btn:hover{filter:brightness(1.06);transform:translateY(-1px);text-decoration:none;
  box-shadow:0 2px 4px rgba(0,0,0,.35),0 12px 26px -10px rgba(79,157,255,.8)}
.btn:active{transform:translateY(0)}
.btn.ghost{background:transparent;border-color:var(--line2);color:var(--brand);box-shadow:none}
.btn.ghost:hover{border-color:var(--brand);background:rgba(79,157,255,.08);filter:none}
.btn.danger{background:transparent;border-color:var(--bad);color:var(--bad);box-shadow:none}
.btn.danger:hover{background:rgba(255,93,93,.1);filter:none}
.btn.small{padding:.32rem .7rem;font-size:.85rem;border-radius:8px}
button.link{background:none;border:none;color:var(--muted);cursor:pointer;font:inherit;padding:0}
button.link:hover{color:var(--ink)}

/* pills / tags */
.pill{display:inline-flex;align-items:center;gap:.3rem;padding:.18rem .6rem;border-radius:var(--radius-pill);font-size:.74rem;font-weight:600;background:var(--panel2);color:var(--muted)}
.pill.good{background:rgba(51,194,127,.16);color:var(--good)}
.pill.warn{background:rgba(255,176,32,.16);color:var(--warn)}
.pill.bad{background:rgba(255,93,93,.16);color:var(--bad)}
.pill.brand{background:rgba(79,157,255,.16);color:var(--brand)}

/* flash */
.flash{padding:.75rem 1rem;border-radius:var(--radius-sm);margin-bottom:1rem;border:1px solid var(--line);box-shadow:var(--shadow)}
.flash.success{background:rgba(51,194,127,.12);border-color:var(--good);color:#bff0d6}
.flash.error{background:rgba(255,93,93,.12);border-color:var(--bad);color:#ffc9c9}

/* chart */
.chart-wrap{position:relative;width:100%;height:300px}
canvas.chart{width:100%;height:100%}
.legend{display:flex;gap:1rem;flex-wrap:wrap;margin-top:.6rem;font-size:.85rem}
.legend span{display:inline-flex;align-items:center;gap:.35rem;color:var(--muted)}
.legend i{width:11px;height:11px;border-radius:3px;display:inline-block}

/* upload dropzone */
.drop{border:2px dashed var(--line2);border-radius:var(--radius);padding:2rem;text-align:center;color:var(--muted);cursor:pointer;transition:.15s}
.drop.over{border-color:var(--brand);color:var(--ink);background:var(--panel2)}

/* landing */
.hero{max-width:760px;margin:10vh auto;padding:0 1.2rem;text-align:center}
.hero h1{font-size:2.4rem;line-height:1.15}
.hero p.lead{font-size:1.15rem;color:var(--muted);margin:1rem 0 2rem}
.feature-grid .card h2{font-size:1rem}

/* ---- landing page (full) ---- */
body.landing{background:
  radial-gradient(900px 500px at 80% -5%, rgba(79,157,255,.16), transparent 60%),
  radial-gradient(700px 500px at -5% 10%, rgba(51,194,127,.10), transparent 55%),
  var(--bg)}
.btn.big{padding:.7rem 1.3rem;font-size:1.02rem}

.lp-nav{display:flex;align-items:center;justify-content:space-between;gap:1rem;
  max-width:1100px;margin:0 auto;padding:1.1rem 1.4rem}
.lp-nav .brand{font-size:1.15rem}
.lp-nav nav{display:flex;align-items:center;gap:1.3rem}
.lp-nav nav a{color:var(--muted)}
.lp-nav nav a:hover{color:var(--ink);text-decoration:none}
.lp-nav nav a.btn{color:#fff}

.lp-hero{max-width:1100px;margin:0 auto;padding:3.5rem 1.4rem 2rem;
  display:grid;grid-template-columns:1.05fr .95fr;gap:3rem;align-items:center}
.lp-hero-copy h1{font-size:3.1rem;line-height:1.08;margin:1rem 0 1.1rem;letter-spacing:-.02em}
.lp-hero-copy .grad{background:linear-gradient(90deg,var(--brand),var(--good));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.lp-hero-copy .lead{font-size:1.18rem;color:var(--muted);max-width:34rem;margin:0 0 1.8rem}
.lp-cta{display:flex;gap:.7rem;flex-wrap:wrap;align-items:center}
.lp-note{margin-top:1rem;font-size:.9rem}

.lp-hero-art{display:flex;justify-content:center}
.lp-quote-card{width:100%;max-width:380px;background:linear-gradient(180deg,var(--panel),var(--panel2));
  border:1px solid var(--line);border-radius:16px;padding:1.3rem 1.4rem;
  box-shadow:0 24px 60px -24px rgba(0,0,0,.7);transform:rotate(-1.2deg)}
.lp-qc-head{display:flex;justify-content:space-between;align-items:center;gap:.6rem}
.lp-qc-title{font-weight:700}
.lp-qc-price{font-size:2.6rem;font-weight:800;margin:.6rem 0 .1rem;letter-spacing:-.02em}
.lp-qc-cur{font-size:1.3rem;color:var(--muted);font-weight:600}
.lp-qc-sub{font-size:.85rem}
.lp-spark{width:100%;height:90px;margin:.9rem 0 .3rem;display:block}
.lp-qc-foot{display:flex;gap:.4rem;flex-wrap:wrap}
.lp-tag{font-size:.72rem;color:var(--muted);background:var(--bg);
  border:1px solid var(--line);border-radius:20px;padding:.18rem .55rem}

.lp-section{max-width:1100px;margin:2.5rem auto;padding:0 1.4rem}
.feature-grid{text-align:left}
.lp-eyebrow{text-align:center;margin-bottom:1.3rem}
.lp-steps{counter-reset:step}
.lp-step{position:relative;padding-left:.2rem}
.lp-step-n{display:inline-flex;align-items:center;justify-content:center;
  width:2rem;height:2rem;border-radius:50%;font-weight:700;
  background:rgba(79,157,255,.15);color:var(--brand);margin-bottom:.7rem}
.lp-step h2{font-size:1.05rem}

.lp-band{max-width:1100px;margin:3rem auto;padding:2.6rem 1.4rem;text-align:center;
  background:linear-gradient(180deg,var(--panel),var(--panel2));
  border:1px solid var(--line);border-radius:var(--radius)}
.lp-band h2{font-size:1.6rem;margin-bottom:.4rem}
.lp-band .lp-cta{justify-content:center;margin-top:1.4rem}

.lp-footer{max-width:1100px;margin:0 auto;padding:2rem 1.4rem 3rem;
  display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;
  border-top:1px solid var(--line);font-size:.9rem}

@media(max-width:820px){
  .lp-hero{grid-template-columns:1fr;gap:2rem;padding-top:2rem}
  .lp-hero-copy h1{font-size:2.4rem}
  .lp-hero-art{order:-1}
  .lp-quote-card{transform:none}
}

/* ---- explore page ---- */
.x-head{margin-bottom:1.4rem}
.x-head h1{margin-bottom:.2rem}
.x-search{display:flex;gap:.6rem;flex-wrap:wrap;margin:1rem 0 .4rem}
.x-search input{flex:1;min-width:220px;padding:.6rem .9rem;border-radius:24px;
  border:1px solid var(--line);background:var(--panel);color:var(--ink)}
.x-search input:focus{outline:none;border-color:var(--brand)}
.x-result-line{font-size:.9rem;margin:.4rem 0 0}

.x-cta{display:flex;align-items:center;justify-content:space-between;gap:1rem;
  flex-wrap:wrap;margin-bottom:1.6rem;
  background:linear-gradient(180deg,var(--panel),var(--panel2))}
.x-cta .btn{white-space:nowrap}

.x-section-head{display:flex;align-items:center;gap:.6rem;
  margin:1.8rem 0 .8rem}
.x-section-head h3{margin:0}

.x-card{display:flex;flex-direction:column;transition:transform .12s,border-color .12s}
.x-card:hover{transform:translateY(-2px);border-color:var(--brand);text-decoration:none}
.x-card-title{font-weight:600;color:var(--ink)}
.x-card-sub{font-size:.8rem;min-height:1.1em}
.x-card-meta{font-size:.75rem;margin-top:.15rem}
.x-product-price{margin-top:.5rem}
.x-commodity-price{font-size:1.4rem;margin-top:.3rem}
.x-unit{font-size:.8rem}
.x-delta{font-size:.8rem;margin-top:.2rem}
.x-table-card tbody tr:hover td{background:var(--panel2)}

.empty{padding:2rem;text-align:center;color:var(--muted)}
.crumb{color:var(--muted);font-size:.85rem;margin-bottom:.3rem}
.price-big{font-size:1.8rem;font-weight:700}
.delta-up{color:var(--bad)} .delta-down{color:var(--good)}