.dvc-shell{
  --blue:#0b84c6;--blue-deep:#075b8a;--blue-soft:#eaf6fc;--ink:#101820;--muted:#657786;
  --line:#dbe5ec;--line-strong:#c6d4de;--paper:#fff;--soft:#f7fafc;--gold:#f4bd2d;
  font-family:Arial,Helvetica,sans-serif;color:var(--ink);max-width:1180px;margin:24px auto;background:var(--paper);
  border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:0 16px 50px rgba(14,44,64,.10)
}
.dvc-shell *{box-sizing:border-box}
.dvc-shell button,.dvc-shell input{font:inherit}
.dvc-hero{position:relative;padding:30px 34px;overflow:hidden;background:#fff;min-height:145px;border-bottom:1px solid var(--line)}
.dvc-hero-art{position:absolute;inset:0;background-image:linear-gradient(90deg,#fff 0%,rgba(255,255,255,.97) 37%,rgba(255,255,255,.70) 58%,rgba(255,255,255,.18) 100%),url('../img/velocity-calculator-banner.png');background-size:cover;background-position:center right;opacity:.95}
.dvc-brand-row{position:relative;z-index:2;display:flex;justify-content:space-between;align-items:flex-start;gap:20px}
.dvc-kicker{display:inline-block;font-weight:900;letter-spacing:.24em;font-size:.72rem;color:var(--blue);border-left:4px solid var(--blue);padding-left:9px}
.dvc-hero h2{font-size:clamp(2rem,5vw,3.65rem);line-height:.93;margin:8px 0 7px;font-weight:950;letter-spacing:-.05em;color:#111820}
.dvc-hero p{margin:0;color:var(--blue-deep);font-size:1rem;font-weight:800;letter-spacing:.05em;text-transform:uppercase}
.dvc-icon-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--line-strong);background:#fff;color:var(--blue-deep);font-weight:900;font-size:17px;cursor:pointer;box-shadow:0 3px 12px rgba(15,48,70,.08)}
.dvc-panel{padding:28px 34px;border-top:1px solid var(--line);background:#fff}
.dvc-controls{border-top:0}
.dvc-step-head{display:flex;gap:13px;align-items:center;margin:0 0 15px}
.dvc-step-head>span{display:grid;place-items:center;width:36px;height:36px;border:1px solid #bcdff1;background:var(--blue-soft);border-radius:9px;color:var(--blue-deep);font-weight:900}
.dvc-step-head strong{display:block;font-size:1.06rem}
.dvc-step-head small,.dvc-field small{color:var(--muted)}
.dvc-calibre-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:15px}
.dvc-calibre-tabs button,.dvc-ghost{border:1px solid var(--line-strong);background:#fff;color:#344957;border-radius:999px;padding:8px 14px;font-weight:800;cursor:pointer;transition:.15s ease}
.dvc-calibre-tabs button:hover,.dvc-ghost:hover{border-color:#8bc9e9;color:var(--blue-deep);background:#f8fcfe}
.dvc-calibre-tabs button.is-active{color:#fff;background:var(--blue);border-color:var(--blue)}
.dvc-projectile-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px;margin-bottom:30px}
.dvc-projectile-card{position:relative;border:1px solid var(--line);background:#fff;border-radius:14px;box-shadow:0 5px 18px rgba(25,67,92,.05);transition:.16s ease;overflow:hidden}
.dvc-projectile-card:hover{border-color:#9dcee8;box-shadow:0 8px 22px rgba(25,67,92,.09);transform:translateY(-1px)}
.dvc-projectile-card.is-selected{border-color:var(--blue);box-shadow:0 0 0 2px rgba(11,132,198,.12)}
.dvc-projectile-select{display:grid;grid-template-columns:84px 1fr auto;gap:12px;align-items:center;text-align:left;width:100%;border:0;background:transparent;color:var(--ink);padding:12px;cursor:pointer}
.dvc-projectile-select img{width:84px;height:84px;object-fit:contain;border-radius:10px;background:#fff;border:1px solid #edf2f5}
.dvc-projectile-orb{width:78px;height:78px;border-radius:50%;display:block;background:radial-gradient(circle at 30% 28%,#e8f8ff 0,#7fd7ff 18%,#0b8ac7 45%,#07141c 72%);box-shadow:inset -7px -9px 14px rgba(0,0,0,.32)}
.dvc-projectile-select strong,.dvc-projectile-select small{display:block}
.dvc-projectile-select strong{font-size:.96rem;line-height:1.2}
.dvc-projectile-select small{margin-top:5px;color:var(--muted)}
.dvc-projectile-select>b{font-size:24px;color:var(--blue)}
.dvc-product-link{display:block;border-top:1px solid #edf2f5;padding:8px 12px;text-decoration:none;color:var(--blue-deep);font-size:.76rem;font-weight:800;text-align:right;background:#fbfdfe}
.dvc-product-link:hover{background:var(--blue-soft);color:#054b74}
.dvc-custom-note{grid-column:1/-1;padding:14px;border:1px dashed var(--line-strong);border-radius:12px;color:var(--muted);background:var(--soft)}
.dvc-input-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.dvc-field>span{display:block;font-size:.77rem;font-weight:900;color:#3a5262;letter-spacing:.08em;text-transform:uppercase;margin-bottom:7px}
.dvc-number-wrap{display:flex;background:#fff;border:1px solid #9dcce5;border-radius:12px;overflow:hidden;box-shadow:inset 0 0 0 1px #eef7fb}
.dvc-number-wrap:focus-within{border-color:var(--blue);box-shadow:0 0 0 3px rgba(11,132,198,.09)}
.dvc-number-wrap input{flex:1;min-width:0;background:transparent;border:0;color:var(--ink);font-size:1.7rem;font-weight:900;padding:12px 14px;outline:none}
.dvc-number-wrap b{display:grid;place-items:center;padding:0 15px;color:var(--blue-deep);background:var(--blue-soft)}
.dvc-field input[type=range]{width:100%;accent-color:var(--blue);margin:13px 0 3px}
.dvc-live-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:21px 0}
.dvc-live-strip>div{padding:12px 14px;background:var(--soft);border:1px solid var(--line);border-radius:12px}
.dvc-live-strip span{display:block;color:#7890a0;font-size:.68rem;font-weight:900;letter-spacing:.11em}
.dvc-live-strip strong{display:block;margin-top:4px;font-size:1.12rem;color:var(--ink)}
.dvc-fire{width:100%;border:0;border-radius:13px;background:linear-gradient(90deg,#0b84c6,#159ddd);color:#fff;font-weight:900;font-size:1.02rem;letter-spacing:.08em;padding:16px 22px;cursor:pointer;box-shadow:0 8px 20px rgba(11,132,198,.20);transition:.15s ease}
.dvc-fire:hover{transform:translateY(-1px);box-shadow:0 10px 25px rgba(11,132,198,.27)}
.dvc-fire-dot{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:9px;background:#fff;box-shadow:0 0 0 4px rgba(255,255,255,.18)}
.dvc-error{color:#b52d2d;font-weight:700;min-height:1.2em}
.dvc-range-panel,.dvc-shots-panel{background:#fbfdfe}
.dvc-range-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.dvc-range-toolbar h3{margin:2px 0 0;font-size:1.28rem;color:var(--ink)}
.dvc-eyebrow{font-size:.67rem;font-weight:900;letter-spacing:.16em;color:var(--blue)}
.dvc-toolbar-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}
.dvc-ghost{white-space:nowrap}
.dvc-ghost[disabled]{opacity:.45;cursor:not-allowed;pointer-events:none}
.dvc-range{position:relative;border:1px solid #cde3ef;border-radius:16px;overflow:hidden;background:#f8fcfe}
.dvc-svg{display:block;width:100%;height:auto;min-height:300px}
.dvc-result-card{position:absolute;right:18px;top:18px;text-align:left;padding:11px 14px;background:rgba(255,255,255,.95);border:1px solid #b8d9ea;border-radius:12px;box-shadow:0 8px 24px rgba(18,74,107,.12);max-width:230px}
.dvc-result-card span{display:block;color:#6d8797;font-size:.62rem;letter-spacing:.13em;font-weight:900}
.dvc-result-card strong{display:block;font-size:1.9rem;color:var(--blue-deep);line-height:1.05;margin:4px 0}
.dvc-result-card small{color:#4c6372;font-size:.73rem}
.dvc-disclaimer{font-size:.74rem;color:#718896;margin-top:9px;line-height:1.45}
.dvc-shot-list{display:grid;gap:10px}
.dvc-shot{display:grid;grid-template-columns:4px 1fr auto;gap:13px;align-items:center;border:1px solid var(--line);border-radius:12px;background:#fff;padding:12px}
.dvc-shot>i{width:4px;height:100%;border-radius:5px}
.dvc-shot span,.dvc-shot small{display:block;color:#7d91a0;font-size:.72rem}
.dvc-shot strong{display:block;margin:2px 0;color:var(--ink)}
.dvc-shot a{display:inline-block;margin-top:5px;color:var(--blue-deep);font-size:.76rem;font-weight:800}
.dvc-shot-metrics{text-align:right}
.dvc-shot-metrics b{font-size:1.18rem;color:var(--blue-deep)}
.dvc-empty{text-align:center;padding:18px;color:#768b99;border:1px dashed var(--line-strong);border-radius:12px;background:#fff}
.dvc-shot-count{font-size:.8rem;color:#7d98a8}
.dvc-seo-info{border-top:1px solid var(--line);background:#fff;padding:0 34px 28px}
.dvc-seo-info details{border:1px solid var(--line);border-radius:12px;background:#fbfdfe;padding:0 16px}
.dvc-seo-info summary{cursor:pointer;font-weight:800;color:#27495e;padding:14px 0}
.dvc-seo-info .dvc-seo-copy{padding:0 0 15px;color:#566c7a;line-height:1.65;font-size:.9rem}
.dvc-seo-info h3{font-size:1rem;color:var(--ink);margin:14px 0 6px}
.dvc-seo-info p{margin:0 0 10px}
.dvc-modal[hidden]{display:none}
.dvc-modal{position:fixed;z-index:99999;inset:0;display:grid;place-items:center;background:rgba(5,20,30,.65);padding:20px}
.dvc-modal-card{position:relative;width:min(560px,100%);background:#fff;border:1px solid #bcd8e7;border-radius:16px;padding:25px;box-shadow:0 35px 100px rgba(0,0,0,.3);color:var(--ink)}
.dvc-modal-card h3{font-size:1.5rem;margin:5px 0 12px}
.dvc-modal-card p{color:#5a7180;line-height:1.6}
.dvc-modal-x{position:absolute;right:14px;top:10px;background:none;border:0;color:#344957;font-size:30px;cursor:pointer}
.dvc-modal-close{margin-top:8px}
@media(max-width:720px){
 .dvc-shell{margin:10px 0;border-radius:14px}
 .dvc-hero,.dvc-panel{padding:21px 17px}
 .dvc-hero{min-height:132px}
 .dvc-hero-art{background-position:65% center;opacity:.52}
 .dvc-hero h2{font-size:2.15rem}
 .dvc-hero p{font-size:.8rem}
 .dvc-input-grid,.dvc-live-strip{grid-template-columns:1fr}
 .dvc-projectile-grid{grid-template-columns:1fr}
 .dvc-projectile-select{grid-template-columns:78px 1fr auto}
 .dvc-projectile-select img{width:78px;height:78px}
 .dvc-result-card{top:10px;right:10px;padding:6px 8px;max-width:128px}
 .dvc-result-card strong{font-size:1rem;margin:2px 0}
 .dvc-result-card small{display:none}
 .dvc-result-card span{font-size:.5rem;letter-spacing:.08em}
 .dvc-shot{grid-template-columns:4px 1fr}
 .dvc-shot-metrics{grid-column:2;text-align:left}
 .dvc-range-toolbar{align-items:flex-start;flex-direction:column}
 .dvc-toolbar-actions{width:100%;justify-content:flex-start}
 .dvc-ghost{font-size:.74rem;padding:7px 10px}
 .dvc-svg{min-height:225px}
 .dvc-seo-info{padding:0 17px 22px}
}
@media(max-width:440px){
 .dvc-live-strip{gap:7px}
 .dvc-live-strip>div{padding:10px 12px}
 .dvc-projectile-select{grid-template-columns:68px 1fr auto}
 .dvc-projectile-select img{width:68px;height:68px}
 .dvc-svg{min-height:205px}
 .dvc-result-card{max-width:114px;padding:5px 7px}
 .dvc-result-card strong{font-size:.92rem}
}