/* ===========================================================================
   app.css — components: nav, hero, features, downloads, visualiser, footer
   =========================================================================== */

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-display); font-weight: 600; font-size: var(--text-ui);
  letter-spacing: 0;
  padding: 13px 22px; border-radius: var(--r-md);
  border: 1px solid transparent; cursor: pointer; text-decoration: none;
  transition: transform .15s var(--ease-out-quart), background .2s var(--ease-out-quart), border-color .2s var(--ease-out-quart), box-shadow .25s var(--ease-out-quart), color .2s var(--ease-out-quart);
  white-space: nowrap;
}
.btn:focus-visible,
.nav__brand:focus-visible,
.nav__links > a:focus-visible,
.dl-card:focus-visible,
.upload:focus-visible,
.partner__text a:focus-visible,
.footer__links a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}
.btn-sm { padding: var(--space-2) var(--space-4); font-size: var(--text-md); }
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--accent); color: var(--accent-ink);
  box-shadow: 0 0 0 0 transparent;
}
.btn-primary:hover { box-shadow: 0 12px 30px -10px var(--accent), 0 0 0 1px var(--accent) inset; transform: translateY(-1px); }
.btn-ghost {
  background: oklch(1 0 0 / 0.03); color: var(--fg);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); background: oklch(0.82 0.15 195 / 0.06); }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-4) var(--gutter);
  max-width: calc(var(--maxw) + var(--gutter) * 2); margin: 0 auto;
  backdrop-filter: blur(14px);
  background: linear-gradient(oklch(0.145 0.02 250 / 0.85), oklch(0.145 0.02 250 / 0.4));
  border-bottom: 1px solid var(--line-soft);
}
.nav__brand { display: flex; align-items: center; gap: var(--space-3); text-decoration: none; }
.nav__logo { display: grid; place-items: center; filter: drop-shadow(0 0 10px oklch(0.82 0.15 195 / 0.5)); }
.nav__name { font-family: var(--font-display); font-weight: 800; font-size: 1.125rem; letter-spacing: 0; color: var(--fg); }
.nav__name span { color: var(--fg-mute); }
.nav__links { display: flex; align-items: center; gap: var(--space-5); }
.nav__links > a { color: var(--fg-dim); text-decoration: none; font-size: var(--text-ui); font-weight: 500; transition: color .2s var(--ease-out-quart); }
.nav__links > a:hover { color: var(--accent); }
.nav__cta { font-size: var(--text-md) !important; padding: var(--space-2) var(--space-4) !important; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: clamp(40px, 7vw, 90px) 0 var(--space-8); }
.hero__inner {
  max-width: var(--maxw); margin: 0 auto; padding-inline: var(--gutter);
  display: grid; gap: clamp(32px, 5vw, 64px); align-items: center;
}
.hero__inner--split { grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr); }
.hero__inner--center { grid-template-columns: 1fr; text-align: center; justify-items: center; }
.hero__inner--center .hero__graph { width: 100%; max-width: 880px; }
.hero__inner--center .hero__actions, .hero__inner--center .hero__stats { justify-content: center; }

.hero__title {
  font-size: var(--text-hero); line-height: 0.94; margin: var(--space-5) 0 0;
  text-transform: uppercase; letter-spacing: 0;
}
.hero__line { display: block; }
.hero__line:nth-child(2) { color: var(--accent); }
.hero__line:nth-child(3) {
  -webkit-text-stroke: 1.5px var(--fg-mute); -webkit-text-fill-color: transparent;
  color: transparent;
}
.hero__blurb { max-width: 46ch; margin: var(--space-5) 0 0; color: var(--fg-dim); font-size: var(--text-lead); line-height: 1.7; text-wrap: pretty; }
.hero__inner--center .hero__blurb { margin-inline: auto; }
.hero__actions { display: flex; gap: var(--space-3); margin-top: var(--space-6); flex-wrap: wrap; }
.hero__stats { display: grid; grid-template-columns: repeat(4, minmax(72px, 1fr)); gap: var(--space-5); margin: var(--space-7) 0 0; padding: 0; list-style: none; }
.hero__stats li { display: flex; flex-direction: column; gap: var(--space-1); min-width: 0; }
.hero__stats b { font-family: var(--font-display); font-size: 1.875rem; color: var(--fg); font-weight: 800; font-variant-numeric: tabular-nums; }
.hero__stats span { font-size: var(--text-sm); color: var(--fg-mute); letter-spacing: 0; text-transform: uppercase; }

/* graph frame */
.hero__graph { position: relative; aspect-ratio: 1 / 0.82; min-height: 340px; }
.graph-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.graph-canvas canvas { width: 100%; height: 100%; display: block; }
.graph-canvas--hero {
  border: 1px solid var(--line-soft); border-radius: var(--r-lg);
  background:
    radial-gradient(120% 120% at 50% 40%, oklch(0.82 0.15 195 / 0.05), transparent 70%),
    var(--bg-0);
  overflow: hidden;
}
.hero__graph-frame { position: absolute; inset: 0; pointer-events: none; }
.corner { position: absolute; width: 16px; height: 16px; border: 2px solid var(--accent); opacity: 0.7; }
.corner.tl { top: 12px; left: 12px; border-right: 0; border-bottom: 0; }
.corner.tr { top: 12px; right: 12px; border-left: 0; border-bottom: 0; }
.corner.bl { bottom: 12px; left: 12px; border-right: 0; border-top: 0; }
.corner.br { bottom: 12px; right: 12px; border-left: 0; border-top: 0; }
.hero__graph-tag {
  position: absolute; top: 14px; left: 50%; transform: translateX(-50%);
  font-size: var(--text-2xs); letter-spacing: 0; color: var(--accent);
  background: oklch(0.145 0.02 250 / 0.6); padding: 4px 10px; border-radius: 20px;
}
.hero__scroll { text-align: center; margin-top: var(--space-7); font-size: var(--text-xs); letter-spacing: 0; color: var(--fg-faint); animation: bob 2s ease-in-out infinite; }
@keyframes bob { 0%,100%{ transform: translateY(0);} 50%{ transform: translateY(6px);} }
@keyframes stage-in { from { opacity: 0; transform: translateY(10px); filter: blur(4px); } to { opacity: 1; transform: translateY(0); filter: blur(0); } }
@keyframes row-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }

/* legend */
.legend {
  position: absolute; bottom: 14px; left: 50%; transform: translateX(-50%);
  display: flex; gap: var(--space-4); flex-wrap: wrap; justify-content: center;
  max-width: calc(100% - 28px);
  background: oklch(0.145 0.02 250 / 0.55); backdrop-filter: blur(6px);
  padding: 8px 14px; border-radius: 30px; border: 1px solid var(--line-soft);
}
.legend__item { display: inline-flex; align-items: center; gap: 7px; font-size: var(--text-xs); font-family: var(--font-mono); color: var(--fg-dim); letter-spacing: 0; }
.legend__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--c); box-shadow: 0 0 8px var(--c); }

/* ---------- Features ---------- */
.features { padding: clamp(72px, 10vw, 120px) 0; position: relative; }
.features__head { max-width: 760px; }
.features__title { font-size: var(--text-section-title); text-transform: uppercase; margin: var(--space-4) 0 0; }
.features__lead { color: var(--fg-dim); font-size: var(--text-lead); line-height: 1.7; margin: var(--space-5) 0 0; max-width: 60ch; }
.features__lead .mono { color: var(--accent); }
.features__grid { list-style: none; padding: 0; margin: var(--space-7) 0 0; display: grid; grid-template-columns: repeat(6, 1fr); gap: 1px; background: var(--line-soft); border: 1px solid var(--line-soft); border-radius: var(--r-lg); overflow: hidden; }
.feature { --feature-c: var(--accent); grid-column: span 2; background: radial-gradient(120% 90% at 20% 0%, color-mix(in oklch, var(--feature-c) 10%, transparent), transparent 58%), var(--bg-1); padding: var(--space-6) var(--space-5); position: relative; transition: background .2s var(--ease-out-quart), transform .18s var(--ease-out-quart); }
.feature:nth-child(1), .feature:nth-child(2), .feature:nth-child(6), .feature--insight { grid-column: span 3; }
.feature:nth-child(1) { --feature-c: var(--type-item); }
.feature:nth-child(2) { --feature-c: var(--accent); }
.feature:nth-child(3) { --feature-c: var(--accent-2); }
.feature:nth-child(4) { --feature-c: var(--type-fluid); }
.feature:nth-child(5) { --feature-c: var(--type-source); }
.feature:nth-child(6) { --feature-c: var(--type-chemical); }
.feature--insight { --feature-c: var(--accent); display: grid; grid-template-columns: minmax(0, 1fr) auto; grid-template-rows: auto auto; align-items: center; gap: var(--space-5); min-height: 230px; }
.feature:hover { background: radial-gradient(120% 90% at 20% 0%, color-mix(in oklch, var(--feature-c) 14%, transparent), transparent 58%), var(--bg-2); transform: translateY(-2px); }
.feature__idx { font-size: var(--text-sm); color: var(--feature-c); letter-spacing: 0; }
.feature__k { font-family: var(--font-display); font-size: var(--text-card-title); font-weight: 700; margin: var(--space-4) 0 var(--space-2); line-height: 1.15; letter-spacing: 0; }
.feature__d { color: var(--fg-mute); font-size: var(--text-ui); line-height: 1.65; margin: 0; }
.feature-map { position: relative; width: 124px; height: 92px; border: 1px solid var(--line-soft); border-radius: var(--r-md); background: radial-gradient(circle at 50% 50%, var(--accent-wash), transparent 58%), var(--bg-0); }
.feature-map::before, .feature-map::after { content: ''; position: absolute; inset: 50% 16px auto; height: 1px; background: var(--line); transform-origin: center; }
.feature-map::after { transform: rotate(90deg); }
.feature-map__hub { position: absolute; left: 50%; top: 50%; width: 14px; height: 14px; border-radius: 50%; transform: translate(-50%, -50%); background: var(--accent); box-shadow: 0 0 14px var(--accent); }
.feature-map__dot { position: absolute; width: 10px; height: 10px; border-radius: 50%; background: var(--c); box-shadow: 0 0 10px var(--c); }
.feature-map__dot:nth-child(1) { left: 18px; top: 16px; }
.feature-map__dot:nth-child(2) { right: 18px; top: 18px; }
.feature-map__dot:nth-child(3) { right: 24px; bottom: 16px; }
.feature-map__dot:nth-child(4) { left: 20px; bottom: 18px; }
.feature-map__dot:nth-child(5) { left: 56px; top: 12px; }
.feature-readout { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-3); }
.feature-readout span { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-2); padding: var(--space-2) var(--space-3); border: 1px solid var(--line-soft); border-radius: var(--r-sm); color: var(--fg-mute); background: oklch(1 0 0 / 0.03); font-size: var(--text-xs); }
.feature-readout b { color: var(--accent); font-size: var(--text-md); }

/* ---------- Downloads ---------- */
.downloads { padding: var(--space-8) 0; }
.downloads__head { display: flex; justify-content: space-between; align-items: flex-end; gap: var(--space-5); flex-wrap: wrap; margin-bottom: var(--space-7); }
.downloads__title { font-size: 3rem; text-transform: uppercase; margin-top: var(--space-4); }
.downloads__meta { display: flex; flex-direction: column; gap: var(--space-2); align-items: flex-end; font-size: var(--text-sm); color: var(--fg-mute); text-align: right; }
.ver-badge { color: var(--accent); border: 1px solid var(--accent); padding: 4px 11px; border-radius: 20px; font-weight: 700; box-shadow: 0 0 18px -6px var(--accent); text-decoration: none; transition: background .2s var(--ease-out-quart), box-shadow .25s var(--ease-out-quart); }
.ver-badge:hover { background: var(--accent-wash); box-shadow: 0 0 24px -6px var(--accent); }
.ver-badge:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.downloads__grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-4); }
.dl-card {
  position: relative; display: flex; flex-direction: column; gap: var(--space-4);
  padding: var(--space-5); border-radius: var(--r-lg); text-decoration: none;
  background: radial-gradient(110% 90% at 20% 0%, color-mix(in oklch, var(--c) 10%, transparent), transparent 58%), var(--bg-2); border: 1px solid var(--line-soft);
  overflow: hidden; transition: transform .2s var(--ease-out-quart), border-color .2s var(--ease-out-quart), background .2s var(--ease-out-quart);
}
.dl-card::after {
  content: ''; position: absolute; left: 0; top: 0; height: 3px; width: 100%;
  background: var(--c); transform: scaleX(0); transform-origin: left; transition: transform .24s var(--ease-out-quint);
}
.dl-card:hover { transform: translateY(-4px); border-color: var(--c); background: var(--bg-3); }
.dl-card:hover::after { transform: scaleX(1); }
.dl-card__top { display: flex; align-items: flex-start; justify-content: space-between; color: var(--fg-faint); }
.dl-card__top svg { transition: color .2s var(--ease-out-quart), transform .2s var(--ease-out-quart); }
.dl-card:hover .dl-card__top svg { color: var(--c); transform: translate(2px, -2px); }
.dl-card__icon { width: 52px; height: 52px; display: block; box-shadow: 0 0 0 1px var(--line-soft); }
.dl-card__name { font-family: var(--font-display); font-size: 1.375rem; font-weight: 700; margin: 0; letter-spacing: 0; }
.dl-card__sub { color: var(--fg-mute); font-size: var(--text-md); margin: 6px 0 0; }
.dl-card__cta { display: inline-flex; align-items: center; gap: 7px; font-family: var(--font-mono); font-size: var(--text-sm); color: var(--c); letter-spacing: 0; margin-top: auto; }

.partner {
  margin-top: var(--space-6); display: flex; align-items: center; gap: var(--space-4);
  padding: var(--space-4) var(--space-5); border-radius: var(--r-lg);
  background: linear-gradient(90deg, var(--amber-wash), transparent 42%), var(--bg-1); border: 1px dashed var(--line);
  text-decoration: none; cursor: pointer;
  transition: border-color .2s var(--ease-out-quart), background .2s var(--ease-out-quart), transform .18s var(--ease-out-quart);
}
.partner:hover { border-color: var(--accent-2); background: linear-gradient(90deg, var(--amber-wash), transparent 55%), var(--bg-2); transform: translateY(-2px); }
.partner:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 4px; }
.partner__label { font-size: var(--text-2xs); letter-spacing: 0; color: var(--fg-faint); writing-mode: vertical-rl; transform: rotate(180deg); }
.partner__logo { width: 64px; height: 64px; display: block; flex-shrink: 0; object-fit: contain; filter: drop-shadow(0 0 16px oklch(0.70 0.19 312 / 0.35)); transition: transform .2s var(--ease-out-quart); }
.partner:hover .partner__logo { transform: scale(1.05); }
.partner__text { color: var(--fg-dim); font-size: var(--text-ui); margin: 0; line-height: 1.65; }
.partner__name { color: var(--accent-2); border-bottom: 1px solid currentColor; }
.partner:hover .partner__name { color: var(--accent-2); }

/* ---------- Visualiser ---------- */
.vis { padding: clamp(64px, 8vw, 104px) 0 clamp(72px, 9vw, 120px); border-top: 1px solid var(--line-soft); background: radial-gradient(800px 420px at 100% 0%, var(--accent-wash), transparent 60%), linear-gradient(var(--bg-0), var(--bg-1) 40%); }
.vis__head { max-width: 720px; margin-bottom: var(--space-7); }
.vis__title { font-size: 3rem; text-transform: uppercase; margin: var(--space-4) 0 0; }
.vis__lead { color: var(--fg-dim); font-size: var(--text-lead); line-height: 1.7; margin: var(--space-5) 0 0; max-width: 62ch; }
.vis__lead .mono { color: var(--accent); }

/* upload zone */
.upload {
  position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; gap: var(--space-3); padding: var(--space-8) var(--space-5); cursor: pointer;
  border: 1.5px dashed var(--line); border-radius: var(--r-xl);
  background: radial-gradient(120% 120% at 50% 0%, oklch(0.82 0.15 195 / 0.04), transparent 60%), var(--bg-1);
  transition: border-color .2s var(--ease-out-quart), background .2s var(--ease-out-quart), transform .18s var(--ease-out-quart);
  min-height: 380px;
}
.upload:hover { border-color: var(--accent); }
.upload--drag { border-color: var(--accent); background: var(--accent-wash); transform: scale(1.005); }
.upload--error { border-color: var(--state-error); background: var(--state-error-bg); }
.upload__pulse { position: relative; width: 100px; height: 100px; display: grid; place-items: center; margin-bottom: 6px; }
.upload__pulse > span { position: absolute; inset: 0; border-radius: 50%; border: 1.5px solid var(--accent); opacity: 0; animation: ping 2.6s ease-out infinite; }
.upload__pulse > span:nth-child(2) { animation-delay: .8s; }
.upload__pulse > span:nth-child(3) { animation-delay: 1.6s; }
@keyframes ping { 0% { transform: scale(.4); opacity: .7; } 100% { transform: scale(1.3); opacity: 0; } }
.upload__core { width: 64px; height: 64px; border-radius: 50%; display: grid; place-items: center; background: var(--bg-0); border: 1px solid var(--accent); color: var(--accent); box-shadow: var(--glow-accent); transition: transform .18s var(--ease-out-quart), color .2s var(--ease-out-quart); }
.upload:hover .upload__core, .upload--drag .upload__core { transform: scale(1.04); }
.upload__title { font-family: var(--font-display); font-size: var(--text-panel-title); font-weight: 700; margin: 0; white-space: nowrap; }
.upload__sub { color: var(--fg-mute); font-size: var(--text-ui); margin: 0; max-width: 44ch; }
.upload__sub u { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
.upload__err { color: var(--state-error); font-family: var(--font-mono); font-size: var(--text-md); }
.upload__samples { display: flex; gap: var(--space-3); margin-top: var(--space-3); flex-wrap: wrap; justify-content: center; }

/* loaded stage */
.vis__stage { display: flex; flex-direction: column; gap: var(--space-4); animation: stage-in .28s var(--ease-out-quart) both; }
.vis__bar { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap; padding: var(--space-3) var(--space-4); background: var(--bg-2); border: 1px solid var(--line-soft); border-radius: var(--r-md); }
.vis__file { display: flex; align-items: center; gap: var(--space-3); color: var(--fg-dim); font-size: var(--text-md); min-width: 0; }
.vis__file svg { color: var(--accent); flex-shrink: 0; }
.vis__net { color: var(--fg); font-family: var(--font-display); font-weight: 600; padding: 2px 0 2px 12px; box-shadow: -1px 0 0 var(--line); letter-spacing: 0; }
.vis__statline { display: flex; gap: 20px; font-size: var(--text-sm); color: var(--fg-mute); flex-wrap: wrap; }
.vis__statline b { color: var(--accent); font-weight: 700; }
.vis__statline .dim { color: var(--fg-faint); }

.vis__grid { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, 340px); gap: var(--space-4); align-items: start; }
.vis__graph { position: relative; z-index: 2; aspect-ratio: 16 / 11; min-height: 420px; border: 1px solid var(--line-soft); border-radius: var(--r-lg); overflow: hidden; background: radial-gradient(120% 120% at 50% 40%, oklch(0.82 0.15 195 / 0.04), transparent 70%), var(--bg-0); }
.graph-canvas--vis { background: transparent; }
.vis__hint, .vis__warn { position: absolute; font-size: var(--text-xs); letter-spacing: 0; padding: 6px 12px; border-radius: 20px; background: oklch(0.145 0.02 250 / 0.7); border: 1px solid var(--line-soft); }
.vis__hint { bottom: 56px; right: 16px; color: var(--fg-mute); }
.vis__warn { top: 14px; left: 14px; color: var(--state-warning); background: color-mix(in oklch, var(--state-warning-bg) 70%, var(--bg-0)); }

/* detail panel */
.detail { position: relative; z-index: 1; background: var(--bg-2); border: 1px solid var(--line-soft); border-radius: var(--r-lg); padding: var(--space-5); overflow-y: auto; max-height: 640px; animation: detail-emerge 0.62s var(--ease-out-quint) 0.16s backwards; }
@keyframes detail-emerge {
  from { opacity: 0; transform: translateX(-64px) scale(0.97); }
  to   { opacity: 1; transform: none; }
}
.detail--empty { display: grid; place-items: center; }
.detail__placeholder { text-align: center; color: var(--fg-mute); font-size: var(--text-sm); letter-spacing: 0; line-height: 2; text-transform: uppercase; }
.detail__ph-mark { display: block; width: 36px; height: 36px; margin: 0 auto 18px; border-radius: 50%; border: 1.5px dashed var(--line); }
.detail__head { padding-bottom: 18px; border-bottom: 1px solid var(--line-soft); }
.detail__kicker { font-size: var(--text-2xs); letter-spacing: 0; color: var(--accent); }
.detail__name { font-family: var(--font-display); font-size: var(--text-panel-title); font-weight: 800; margin: 8px 0 12px; line-height: 1.05; word-break: break-word; }
.detail__tags { display: flex; gap: 8px; flex-wrap: wrap; }
.pill { font-family: var(--font-mono); font-size: var(--text-xs); padding: 3px 9px; border-radius: 20px; letter-spacing: 0; }
.pill--on { color: var(--state-success); background: var(--state-success-bg); }
.pill--off { color: var(--fg-mute); background: oklch(1 0 0 / 0.05); }
.pill--mute { color: var(--fg-dim); background: oklch(1 0 0 / 0.05); }
.detail__section { padding: var(--space-5) 0; border-bottom: 1px solid var(--line-soft); }
.detail__section:last-child { border-bottom: 0; padding-bottom: 0; }
.detail__label { display: block; font-size: var(--text-2xs); letter-spacing: 0; color: var(--fg-faint); margin-bottom: var(--space-3); }
.detail__none { color: var(--fg-mute); font-size: var(--text-md); margin: 0; }

.chan-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: var(--space-3); }
.chan { position: relative; border: 1px solid var(--line-soft); border-radius: var(--r-sm); padding: var(--space-4) var(--space-4) var(--space-3); background: var(--bg-1); overflow: hidden; animation: row-in .2s var(--ease-out-quart) both; animation-delay: calc(var(--i, 0) * 35ms); }
.chan::before { content: ''; position: absolute; inset: 0 0 auto; height: 2px; background: var(--c); opacity: 0.9; }
.chan__head { display: flex; align-items: center; gap: var(--space-2); }
.chan__idx { font-size: var(--text-sm); color: var(--c); font-weight: 700; }
.chan__mode { font-family: var(--font-display); font-size: var(--text-xs); font-weight: 700; letter-spacing: 0; padding: 2px 8px; border-radius: 4px; }
.chan__mode--export { color: var(--type-item); background: oklch(0.80 0.16 75 / 0.14); }
.chan__mode--import { color: var(--type-fluid); background: oklch(0.74 0.14 232 / 0.16); }
.chan__type { margin-left: auto; font-family: var(--font-mono); font-size: var(--text-xs); color: var(--fg-dim); letter-spacing: 0; }
.chan__stats { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-3); font-size: var(--text-sm); color: var(--fg); }
.chan__stats span { display: inline-flex; flex-direction: column; gap: 2px; }
.chan__stats i { font-style: normal; font-size: 0.5625rem; letter-spacing: 0; color: var(--fg-faint); text-transform: uppercase; }
.chan__name { margin-top: var(--space-2); font-family: var(--font-mono); font-size: var(--text-xs); color: var(--accent); }

.item-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: var(--space-2); }
.item-row { display: flex; align-items: center; gap: var(--space-2); font-size: var(--text-md); color: var(--fg-dim); text-transform: capitalize; }
.item-row__slot, .item-row__qty { font-size: var(--text-2xs); color: var(--accent); border: 1px solid var(--line); border-radius: 4px; padding: 2px 6px; letter-spacing: 0; text-transform: none; }

/* type chip (shared) */
.type-chip { display: inline-flex; align-items: center; gap: 6px; font-family: var(--font-mono); font-size: var(--text-sm); color: var(--fg-dim); }
.type-chip__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--c); box-shadow: 0 0 8px var(--c); }
.type-chip b { color: var(--c); margin-left: 2px; }

/* ---------- Icon placeholder slots (swap for real logos later) ---------- */
.slot-ph {
  display: grid; place-items: center;
  color: var(--fg-faint);
  background:
    radial-gradient(circle at 35% 30%, oklch(1 0 0 / 0.06), transparent 42%),
    linear-gradient(135deg, oklch(1 0 0 / 0.035), transparent 58%),
    var(--bg-0);
  box-shadow: 0 0 0 1px var(--line-soft);
  flex-shrink: 0;
  transition: color .2s, box-shadow .2s;
}
.dl-card:hover .slot-ph { color: var(--c); box-shadow: 0 0 0 1px var(--c); }

/* ---------- Footer ---------- */
.footer { padding: var(--space-7) 0; border-top: 1px solid var(--line-soft); background: var(--bg-0); }
.footer__inner { display: flex; justify-content: space-between; align-items: flex-start; gap: var(--space-6); flex-wrap: wrap; }
.footer__brand p { color: var(--fg-faint); font-size: var(--text-sm); margin: 10px 0 0; }
.footer__links { display: flex; gap: 22px; flex-wrap: wrap; }
.footer__links a { color: var(--fg-dim); text-decoration: none; font-size: var(--text-ui); }
.footer__links a:hover { color: var(--accent); }
.footer__meta { color: var(--fg-faint); font-size: var(--text-xs); line-height: 1.7; text-align: right; }

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  .hero__inner--split { grid-template-columns: 1fr; }
  .hero__title { font-size: 5rem; }
  .features__title, .downloads__title, .vis__title { font-size: 2.875rem; }
  .hero__graph { order: -1; min-height: 320px; }
  .features__grid { grid-template-columns: repeat(2, 1fr); }
  .feature, .feature:nth-child(1), .feature:nth-child(2), .feature:nth-child(6), .feature--insight { grid-column: span 1; }
  .downloads__grid { grid-template-columns: repeat(2, 1fr); }
  .vis__grid { grid-template-columns: 1fr; }
  .detail { max-height: none; }
}
@media (max-width: 620px) {
  .nav { gap: var(--space-4); }
  .nav__links { gap: 0; }
  .nav__links > a:not(.nav__cta) { display: none; }
  .nav__cta { min-width: 44px; justify-content: center; font-size: 0 !important; padding: 10px !important; gap: 0; }
  .hero { padding-top: var(--space-6); }
  .hero__title { font-size: 2.625rem; }
  .features__title, .downloads__title, .vis__title { font-size: 2.25rem; }
  .hero__actions .btn { flex: 1 1 220px; justify-content: center; }
  .hero__stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-5) var(--space-4); width: 100%; }
  .hero__graph { min-height: 300px; }
  .legend { gap: var(--space-2); padding: 7px 10px; }
  .legend__item { font-size: var(--text-2xs); }
  .features__grid { grid-template-columns: 1fr; }
  .feature--insight { grid-template-columns: 1fr; }
  .feature-map { width: 100%; }
  .feature-readout { grid-template-columns: 1fr; }
  .downloads__grid { grid-template-columns: 1fr; }
  .downloads__meta { align-items: flex-start; text-align: left; }
  .partner { align-items: flex-start; }
  .partner__label { writing-mode: horizontal-tb; transform: none; }
  .upload { min-height: 330px; padding: var(--space-7) var(--space-4); }
  .upload__title { font-size: 1.375rem; white-space: normal; }
  .vis__file { flex-wrap: wrap; }
  .vis__net { box-shadow: none; padding-left: 0; flex-basis: 100%; }
  .hero__line:nth-child(3) { -webkit-text-stroke: 1px var(--fg-mute); }
  .vis__bar { justify-content: center; }
}
@media (max-width: 440px) {
  .nav__name { font-size: 0.9375rem; letter-spacing: 0; }
  .hero__graph { min-height: 260px; }
  .hero__scroll { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    animation-delay: 0ms !important;
  }
}