/* Open Design "downloadslite-site-atlas" integration layer.
   This file owns the shared shell; page-family files own their internal layout. */
:root {
  --atlas-bg: #f3f7fa;
  --atlas-surface: #ffffff;
  --atlas-surface-2: #f7fafc;
  --atlas-ink: #172336;
  --atlas-muted: #65758a;
  --atlas-soft: #8b9aac;
  --atlas-line: #d9e2ea;
  --atlas-accent: #159a83;
  --atlas-accent-strong: #087662;
  --atlas-accent-soft: #e7f6f2;
  --atlas-cover-a: #245c8e;
  --atlas-cover-b: #183f62;
  --atlas-shadow: 0 18px 48px rgba(31, 53, 73, .09);
  --atlas-display: Georgia, "Noto Serif SC", "Songti SC", serif;
  --atlas-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei UI", system-ui, sans-serif;
  --atlas-mono: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
}

:root[data-resolved-theme="dark"] {
  --atlas-bg: #09131f;
  --atlas-surface: #111c2a;
  --atlas-surface-2: #0d1825;
  --atlas-ink: #eef4f7;
  --atlas-muted: #9cafbe;
  --atlas-soft: #73879b;
  --atlas-line: #2a3a4b;
  --atlas-accent: #51c5a8;
  --atlas-accent-strong: #76ddc2;
  --atlas-accent-soft: rgba(81, 197, 168, .12);
  --atlas-cover-a: #0b4768;
  --atlas-cover-b: #06384d;
  --atlas-shadow: 0 22px 60px rgba(0, 0, 0, .28);
}

html { color-scheme: light; }
html[data-resolved-theme="dark"] { color-scheme: dark; }
body.atlas-site {
  background-color: var(--atlas-bg);
  color: var(--atlas-ink);
  font-family: var(--atlas-body);
  transition: background-color .18s ease, color .18s ease;
}
:root[data-resolved-theme="dark"] body.atlas-site {
  background-image: linear-gradient(rgba(81,197,168,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(81,197,168,.025) 1px, transparent 1px);
  background-size: 32px 32px;
}

body.atlas-site .site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--atlas-line);
  background: color-mix(in srgb, var(--atlas-bg) 92%, transparent);
  box-shadow: none;
  backdrop-filter: blur(18px);
}

@media (min-width: 769px) {
  body.atlas-site .desktop-header {
    display: block;
    max-width: 1380px;
    min-height: 0;
    margin: auto;
    padding: 0 28px;
  }
  body.atlas-site .atlas-header-top {
    display: grid;
    grid-template-columns: 190px minmax(320px, 1fr) auto auto;
    gap: 20px;
    align-items: center;
    min-height: 70px;
    border-bottom: 1px solid var(--atlas-line);
  }
  body.atlas-site .atlas-header-top > * { order: initial !important; }
  body.atlas-site .atlas-brand {
    display: inline-flex;
    gap: 3px;
    align-items: baseline;
    color: var(--atlas-ink);
    font: 700 25px/1 var(--atlas-display);
    letter-spacing: -.045em;
  }
  body.atlas-site .atlas-brand b { color: var(--atlas-accent); font-weight: 700; }
  body.atlas-site .atlas-site-search {
    width: min(620px, 100%);
    height: 40px;
    border: 1px solid var(--atlas-line);
    border-radius: 8px;
    background: var(--atlas-surface);
    box-shadow: inset 0 1px 0 rgba(255,255,255,.04);
  }
  body.atlas-site .atlas-site-search:focus-within {
    border-color: var(--atlas-accent);
    background: var(--atlas-surface);
    box-shadow: 0 0 0 3px var(--atlas-accent-soft);
  }
  body.atlas-site .atlas-site-search input { color: var(--atlas-ink); font-size: 13px; }
  body.atlas-site .atlas-site-search button { color: var(--atlas-accent); }
  body.atlas-site .desktop-theme-control {
    display: flex;
    gap: 2px;
    padding: 3px;
    border: 1px solid var(--atlas-line);
    border-radius: 7px;
    background: var(--atlas-surface);
  }
  body.atlas-site .desktop-theme-control button {
    padding: 7px 9px;
    border: 0;
    border-radius: 4px;
    background: transparent;
    color: var(--atlas-muted);
    font: 11px var(--atlas-mono);
  }
  body.atlas-site .desktop-theme-control button.is-active {
    background: var(--atlas-accent-soft);
    color: var(--atlas-accent-strong);
    box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--atlas-accent) 30%, var(--atlas-line));
  }
  body.atlas-site .atlas-header-top > .header-action-btn {
    width: 38px;
    height: 38px;
    margin: 0;
    border: 1px solid var(--atlas-line);
    border-radius: 7px;
    color: var(--atlas-muted);
    background: var(--atlas-surface);
  }
  body.atlas-site .atlas-header-top > .header-action-btn:hover { color: var(--atlas-accent); background: var(--atlas-accent-soft); }
  body.atlas-site .desktop-primary-nav {
    display: flex;
    justify-content: flex-start;
    gap: clamp(16px, 2vw, 28px);
    height: 49px;
    color: var(--atlas-muted);
    white-space: nowrap;
  }
  body.atlas-site .desktop-primary-nav a {
    padding: 16px 0 13px;
    border-bottom: 2px solid transparent;
    color: inherit;
    font-size: 13px;
    font-weight: 650;
  }
  body.atlas-site .desktop-primary-nav a:hover,
  body.atlas-site .desktop-primary-nav a:focus-visible { color: var(--atlas-accent-strong); border-bottom-color: var(--atlas-accent); }
  body.atlas-site .desktop-primary-nav .desktop-nav-bargain { color: #d86d16; font-weight: 800; }
  body.atlas-site .desktop-primary-nav .desktop-nav-bargain::before { content: "★"; margin-right: 4px; color: #f59a3a; font-size: 9px; }
}

body.atlas-site > .container {
  display: flex;
  width: min(1380px, calc(100% - 56px));
  max-width: none;
  margin: 0 auto 40px;
  padding: 0;
  gap: 24px;
}
body.atlas-site > .container > .content { min-width: 0; width: 100%; }
body.atlas-site .atlas-breadcrumb,
body.atlas-site .site-breadcrumb {
  width: min(1380px, calc(100% - 56px));
  max-width: none;
  margin: 0 auto;
  padding: 22px 0 14px;
}
body.atlas-site .site-breadcrumb__list { color: var(--atlas-muted); font: 11px/1.5 var(--atlas-mono); }
body.atlas-site .site-breadcrumb__list {
  border-color: var(--atlas-line);
  background: color-mix(in srgb, var(--atlas-surface) 88%, transparent);
  box-shadow: 0 7px 22px color-mix(in srgb, var(--atlas-bg) 65%, transparent);
}
body.atlas-site .site-breadcrumb__list a { color: var(--atlas-accent-strong); }
body.atlas-site .site-breadcrumb__list a:hover { color: var(--atlas-accent); }
body.atlas-site .site-breadcrumb__current { color: var(--atlas-ink); }
body.atlas-site .site-breadcrumb__list li + li::before { border-color: var(--atlas-soft); }
body.atlas-site .footer {
  margin-top: 48px;
  padding: 28px;
  border-top: 1px solid var(--atlas-line);
  background: transparent;
  color: var(--atlas-muted);
}

.atlas-kicker { color: var(--atlas-accent-strong); font: 700 10px/1.4 var(--atlas-mono); letter-spacing: .1em; text-transform: uppercase; }
.atlas-mono { color: var(--atlas-muted); font: 11px/1.55 var(--atlas-mono); }

/* The PC home hero intentionally remains dark in both themes. */
body.atlas-site .home-hero-side :is(h2,b) { color: #eff6ff; }
body.atlas-site .home-hero-side a:hover b { color: #9cc5ff; }

@media (max-width: 1100px) and (min-width: 769px) {
  body.atlas-site .atlas-header-top { grid-template-columns: 160px minmax(220px, 1fr) auto auto; }
  body.atlas-site .desktop-primary-nav { gap: 14px; overflow-x: auto; scrollbar-width: none; }
}

@media (max-width: 768px) {
  /* A backdrop-filter creates a containing block for fixed descendants in
     Chromium, which would trap the drawer inside the 110px header. */
  body.atlas-site .site-header { position: sticky; backdrop-filter: none; }
  body.atlas-site .m-header {
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr) 38px 38px;
    grid-template-rows: 58px;
    align-items: center;
    width: 100%;
    height: 58px;
    min-height: 58px;
    padding: 0 12px;
    gap: 4px;
    justify-content: stretch;
    border-bottom: 1px solid var(--atlas-line);
    background: color-mix(in srgb, var(--atlas-bg) 94%, transparent);
    color: var(--atlas-ink);
  }
  body.atlas-site .m-menu-btn,
  body.atlas-site .m-theme-toggle,
  body.atlas-site .m-header-search {
    display: grid;
    width: 36px;
    height: 36px;
    place-items: center;
    border: 1px solid var(--atlas-line);
    border-radius: 9px;
    background: var(--atlas-surface);
    color: var(--atlas-muted);
  }
  body.atlas-site .m-menu-btn { grid-column: 1; grid-row: 1; }
  body.atlas-site .m-logo {
    grid-column: 2;
    grid-row: 1;
    justify-self: center;
    margin: 0;
    color: var(--atlas-ink);
    font: 700 21px/1 var(--atlas-display);
    letter-spacing: -.04em;
  }
  body.atlas-site .m-logo b { color: var(--atlas-accent); }
  body.atlas-site .m-nav-drop {
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
  }
  body.atlas-site .m-nav-drop.m-nav-drop--open {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
  }
  body.atlas-site .m-header-search { grid-column: 3; grid-row: 1; }
  body.atlas-site .m-theme-toggle { grid-column: 4; grid-row: 1; }
  body.atlas-site .m-nav-overlay { background: rgba(3, 12, 22, .58); backdrop-filter: blur(2px); }
  body.atlas-site .m-nav-drop {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-content: start;
    gap: 10px;
    top: 0;
    right: auto;
    bottom: 0;
    left: 0;
    width: min(350px, 90vw);
    padding: 16px;
    border: 0;
    border-right: 1px solid var(--atlas-line);
    border-radius: 0 28px 28px 0;
    background:
      radial-gradient(circle at 0 0, var(--atlas-accent-soft), transparent 42%),
      var(--atlas-surface);
    box-shadow: 24px 0 60px rgba(0,0,0,.22);
    transform: translateX(-105%);
    transition: transform .2s ease;
  }
  body.atlas-site .m-nav-drop--open { transform: translateX(0); }
  body.atlas-site .m-navd-brand { display: grid; grid-column: 1 / -1; grid-template-columns: 48px minmax(0,1fr) 34px; gap: 11px; align-items: center; margin-bottom: 6px; padding: 10px; border: 1px solid var(--atlas-line); border-radius: 18px; background: color-mix(in srgb, var(--atlas-surface-2) 84%, transparent); }
  body.atlas-site .m-navd-brand > a { display: grid; width: 48px; height: 48px; place-items: center; border: 1px solid var(--atlas-line); border-radius: 12px; background: var(--atlas-accent-soft); color: var(--atlas-accent-strong); font: 700 18px var(--atlas-display); }
  body.atlas-site .m-navd-brand strong,
  body.atlas-site .m-navd-brand small { display: block; }
  body.atlas-site .m-navd-brand strong { color: var(--atlas-ink); font-size: 15px; }
  body.atlas-site .m-navd-brand small { margin-top: 3px; color: var(--atlas-muted); font: 9px var(--atlas-mono); }
  body.atlas-site .m-navd-brand button { display: grid; width: 34px; height: 34px; place-items: center; border: 1px solid var(--atlas-line); border-radius: 9px; background: transparent; color: var(--atlas-muted); font-size: 22px; }
  body.atlas-site .m-navd-item { display: grid; min-height: 86px; align-content: center; justify-items: start; gap: 8px; margin: 0; padding: 14px; border: 1px solid var(--atlas-line); border-radius: 16px; background: color-mix(in srgb, var(--atlas-surface-2) 76%, transparent); color: var(--atlas-ink); font-weight: 750; }
  body.atlas-site .m-navd-item svg { width: 22px; height: 22px; color: var(--atlas-accent-strong); }
  body.atlas-site .m-navd-item:hover { border-color: color-mix(in srgb, var(--atlas-accent) 54%, var(--atlas-line)); background: var(--atlas-accent-soft); color: var(--atlas-accent-strong); transform: translateY(-1px); }
  body.atlas-site .m-navd-item--bargain { grid-column: 1 / -1; min-height: 72px; grid-template-columns: 28px minmax(0, 1fr); align-items: center; align-content: center; border-color: color-mix(in srgb, #ff9f43 42%, var(--atlas-line)); background: linear-gradient(110deg, color-mix(in srgb, #ff9f43 18%, var(--atlas-surface)), color-mix(in srgb, #ff9f43 5%, var(--atlas-surface))); color: #d66b12; font-weight: 850; }
  body.atlas-site .m-navd-item--bargain svg { color: #f08a24; }
  body.atlas-site > .container { display: block; width: 100%; margin: 0; padding: 0 0 80px; }
  body.atlas-site > .container > .content { min-width: 0; }
  body.atlas-site > .container > .sidebar { display: none; }
  body.atlas-site .atlas-breadcrumb,
  body.atlas-site .site-breadcrumb { width: 100%; padding: 10px 14px 6px; overflow-x: auto; }
  body.atlas-site .footer { margin-top: 20px; padding: 20px 16px 84px; }
  body.atlas-site .m-bottom-nav {
    border-color: var(--atlas-line);
    border-radius: 0;
    background: color-mix(in srgb, var(--atlas-surface) 94%, transparent);
    color: var(--atlas-muted);
  }
}