/* ===== Tokens (compact, matches your site) ===== */
:root{
  --bg:#ffffff;
  --ink-900:#0f172a; --ink-800:#1f2937; --ink-700:#334155; --ink-600:#475569; --ink-500:#64748b; --ink-400:#94a3b8;
  --metal-050:#f8fafc; --metal-100:#f1f5f9; --metal-200:#e2e8f0; --metal-300:#cbd5e1;
  --brand:#0ea5e9; --brand-600:#0284c7; --accent:#22c55e;
  --s2:4px; --s3:6px; --s4:8px; --s5:10px; --s6:12px; --s8:16px; --s10:20px; --s12:24px; --s16:32px; --s20:40px; --s24:48px;
  --r1:8px; --r2:14px; --r3:22px;
  --fs-sm:.925rem; --fs-base:1rem; --fs-h1:clamp(1.6rem,2.0vw+1rem,2.4rem); --fs-h2:clamp(1.2rem,1.2vw+1rem,1.6rem); --fs-h3:1.05rem;
  --container:1260px;
  --ease:cubic-bezier(.22,.61,.36,1); --ease-out:cubic-bezier(.16,1,.3,1);
  --dur-fast:120ms; --dur:200ms;
  --shadow:0 6px 18px rgba(15,23,42,.08);
  --shadow-hover:0 10px 28px rgba(15,23,42,.12);
  --brand-grad:linear-gradient(135deg,#0ea5e9,#38bdf8);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink-900);font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,"Helvetica Neue",Arial,"Noto Sans",sans-serif;line-height:1.45}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-600);text-decoration:underline}
.container{max-width:var(--container);margin:0 auto;padding:0 var(--s8)}

/* ===== Header (simple, consistent) ===== */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);backdrop-filter:saturate(140%) blur(6px);border-bottom:1px solid var(--metal-200)}
.site-header .row{display:flex;align-items:center;justify-content:space-between;gap:var(--s8);padding:var(--s8) 0}
.logo{display:flex;align-items:center;gap:var(--s6);font-weight:800;letter-spacing:.4px;color:var(--ink-900)}
.logo .mark{width:38px;height:38px;border-radius:11px;background:var(--brand-grad);display:grid;place-items:center;color:#fff;font-weight:900;box-shadow:var(--shadow)}
.nav{display:flex;align-items:center;gap:var(--s8)}
.nav a{color:var(--ink-700);padding:6px 10px;border-radius:8px;position:relative;transition:color var(--dur-fast) var(--ease), background-color var(--dur-fast) var(--ease)}
.nav a:hover{background:var(--metal-100);text-decoration:none;color:var(--ink-900)}
.nav a::after{content:"";position:absolute;left:10px;right:10px;bottom:-6px;height:2px;background:var(--brand-grad);transform:scaleX(0);transform-origin:left;transition:transform var(--dur-fast) var(--ease);border-radius:2px}
.nav a:hover::after,.nav a:focus-visible::after{transform:scaleX(1)}
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:999px;padding:10px 14px;border:1px solid var(--metal-200);background:#fff;color:var(--ink-900);box-shadow:var(--shadow);position:relative;overflow:hidden;transition:transform var(--dur-fast) var(--ease),box-shadow var(--dur-fast) var(--ease),background-color var(--dur-fast) var(--ease),border-color var(--dur-fast) var(--ease),color var(--dur-fast) var(--ease)}
.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-hover);text-decoration:none}
.btn:active{transform:translateY(0);box-shadow:var(--shadow)}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(56,189,248,.35),var(--shadow-hover)}
.btn.primary{background:var(--brand-grad);border-color:transparent;color:#fff}
.btn.primary::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(to right,transparent 0%,rgba(255,255,255,.35) 50%,transparent 100%);width:40%;height:200%;top:-50%;left:-60%;transform:rotate(20deg);transition:transform 500ms var(--ease-out),opacity var(--dur) var(--ease);opacity:0}
.btn.primary:hover::after{transform:rotate(20deg) translateX(220%);opacity:.8}

/* ===== Two-column layout ===== */
.main{display:grid;grid-template-columns: 290px 1fr;gap:var(--s12);padding:var(--s12) 0}
@media (max-width: 960px){
  .main{grid-template-columns:1fr}
}

/* Sidebar */
.sidebar{position:sticky;top:70px;align-self:start;border:1px solid var(--metal-200);border-radius:var(--r2);box-shadow:var(--shadow);background:#fff;overflow:hidden}
.sidebar-head{display:flex;align-items:center;justify-content:space-between;padding:var(--s8);border-bottom:1px solid var(--metal-200);background:var(--metal-100)}
.sidebar .list{max-height:calc(100vh - 180px);overflow:auto;padding:var(--s6);scrollbar-gutter:stable}
.item{display:flex;align-items:center;gap:10px;padding:10px var(--s8);border-radius:10px;color:var(--ink-800);cursor:pointer;transition:background-color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease)}
.item:hover{background:#fff;transform:translateY(-1px)}
.item[aria-current="true"]{background:rgba(14,165,233,.10); outline:1px solid rgba(14,165,233,.35); color:var(--brand-600); font-weight:600}
.item .dot{width:8px;height:8px;border-radius:999px;background:var(--metal-300);flex:0 0 8px}
.item[aria-current="true"] .dot{background:var(--brand)}

/* Mobile drawer toggle */
.sidebar-toggle{display:none}
@media (max-width: 960px){
  .sidebar{position:fixed;inset:auto 0 0 0;top:auto;transform:translateY(100%);transition:transform var(--dur) var(--ease);z-index:60;border-top-left-radius:var(--r2);border-top-right-radius:var(--r2)}
  .sidebar.open{transform:translateY(0)}
  .sidebar-toggle{display:flex;position:sticky;top:56px;z-index:55;justify-content:flex-end;margin:-8px 0 8px}
}

/* Content panel */
.panel{border:1px solid var(--metal-200);border-radius:var(--r2);box-shadow:var(--shadow);background:#fff;overflow:hidden}
.panel .head{display:flex;align-items:center;justify-content:space-between;gap:var(--s6);padding:var(--s10);border-bottom:1px solid var(--metal-200);background:linear-gradient(180deg,var(--metal-100),var(--metal-050))}
.panel .title{margin:0;font-size:var(--fs-h2)}
.panel .sub{color:var(--ink-600);margin:2px 0 0}
.panel .body{padding:var(--s10);display:grid;gap:var(--s10)}

/* Hero image placeholder */
.ph-img{position:relative;width:100%;aspect-ratio: 16/9;overflow:hidden;border-radius:var(--r2);background:linear-gradient(180deg,var(--metal-100),var(--metal-050))}
.ph-img::before{content:"";position:absolute;inset:0;display:grid;place-items:center;color:var(--ink-400);font-weight:700;letter-spacing:.15em}
.ph-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;transition:transform var(--dur) var(--ease)}
.ph-img:hover img{transform:scale(1.02)}

.chips{display:flex;flex-wrap:wrap;gap:var(--s6)}
.chip{display:inline-flex;align-items:center;gap:8px;padding:6px 10px;border-radius:999px;background:var(--metal-100);border:1px solid var(--metal-200);color:var(--ink-700);font-size:var(--fs-sm)}
.meta{color:var(--ink-600);font-size:var(--fs-sm)}

.grid{display:grid;gap:var(--s8)}
.two-cols{grid-template-columns: 1fr 1fr}
@media (max-width: 960px){ .two-cols{grid-template-columns:1fr} }

.card{border:1px solid var(--metal-200);border-radius:var(--r2);background:#fff;box-shadow:var(--shadow);overflow:hidden}
.card .body{padding:var(--s8)}
.card h3{margin:0 0 var(--s6);font-size:var(--fs-h3)}

/* Key specs table */
.specs{width:100%;border-collapse:collapse;font-size:.98rem}
.specs th,.specs td{padding:8px 10px;border-bottom:1px solid var(--metal-200);text-align:left}
.specs th{color:var(--ink-600);font-weight:600}
.specs tr:last-child td{border-bottom:none}

/* Downloads list */
.downloads{display:flex;flex-wrap:wrap;gap:var(--s6)}
.dl{display:inline-flex;align-items:center;gap:10px;border:1px solid var(--metal-200);border-radius:12px;padding:10px 12px;background:#fff;box-shadow:var(--shadow)}
.dl .ic{width:18px;height:18px;border-radius:4px;background:var(--brand-grad)}

/* Sticky CTA on mobile */
.sticky-cta{position:sticky;bottom:0;display:flex;justify-content:flex-end;padding:var(--s8);background:linear-gradient(180deg,transparent,#fff)}
@media (min-width: 961px){ .sticky-cta{display:none} }

.divider{height:1px;background:linear-gradient(90deg,transparent,var(--metal-200),transparent);margin:var(--s8) 0}

/* Footer (short) */
.site-footer{border-top:1px solid var(--metal-200);background:linear-gradient(180deg,var(--metal-100),var(--metal-050));margin-top:var(--s20)}
.site-footer .micro{padding:var(--s8) 0;color:var(--ink-600);font-size:var(--fs-sm);display:flex;justify-content:space-between;gap:var(--s8);flex-wrap:wrap}

/* Reduced motion */
@media (prefers-reduced-motion: reduce){ *{transition:none !important; animation:none !important;} }


/* ===== Applied design polish overrides ===== */

/* === Tray polish pack (drop-in overrides) === */
:root{
  --surface:#fff;
  --stroke: rgba(15,23,42,.08);
  --stroke-brand: rgba(2,132,199,.14);
  --elev-1: 0 2px 8px rgba(15,23,42,.06);
  --elev-2: 0 6px 18px rgba(15,23,42,.10);
}
.panel, .card, .sidebar{
  background: var(--surface);
  border: 1px solid var(--stroke);
  border-radius: var(--r2);
  box-shadow: var(--elev-1);
}
.panel .head{
  background:#fff;
  border-bottom:1px solid var(--metal-200);
  padding: var(--s8) var(--s10);
}
.card .body, .panel .body{ padding: var(--s10); }
.card:hover{
  box-shadow: var(--elev-2);
  border-color: var(--stroke-brand);
}
.sidebar-head{
  background:#fff;
  border-bottom:1px solid var(--metal-200);
}
.item{ padding:10px 12px; transform:none; }
.item:hover{ background: var(--metal-100); }
.item[aria-current="true"]{
  background: rgba(14,165,233,.08);
  outline: 1px solid rgba(14,165,233,.28);
  color: var(--brand-600);
}
.ph-img{
  background: linear-gradient(180deg,#f6fafe,#fbfdff);
}
.ph-img::before{
  color: var(--ink-400);
  letter-spacing:.12em;
  opacity:.7;
}
.main{ gap: var(--s10); }
.divider{
  margin: var(--s6) 0;
  background: linear-gradient(90deg,transparent,var(--metal-200),transparent);
}
@media (max-width: 960px){
  .sidebar{
    box-shadow: 0 -8px 20px rgba(15,23,42,.12);
    border-top-left-radius: var(--r2);
    border-top-right-radius: var(--r2);
  }
  .sidebar-head{ position: sticky; top: 0; background:#fff; }
}
/* === Sidebar list fix: clean items, remove native button borders === */
.sidebar .list{ padding: var(--s6); gap: 8px; display: grid; }

.item{
  /* reset native button look */
  all: unset;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
  color: var(--ink-800);
  line-height: 1.3;
  transition: background-color var(--dur-fast) var(--ease),
              color var(--dur-fast) var(--ease);
}

/* optional: hide the dot to reduce clutter */
.item .dot{ display: none; }

.item:hover{ background: var(--metal-100); }
.item:focus-visible{
  outline: 2px solid rgba(14,165,233,.35);
  outline-offset: 2px;
}
.item[aria-current="true"]{
  background: rgba(14,165,233,.10);
  color: var(--brand-600);
  box-shadow: inset 3px 0 0 var(--brand); /* left accent bar */
  font-weight: 600;
}