:root {
    /* Deep-space (dark) — primary world, derived from the DeepSkies mark */
    --bg:        #070a1c;
    --bg-2:      #0a0f26;
    --panel:     #111838;
    --panel-2:   #16204a;
    --hair:      rgba(231, 201, 135, 0.16);
    --hair-cool: rgba(170, 190, 240, 0.12);
    --ink:       #e9ecf7;
    --ink-soft:  #a3abca;
    --ink-faint: #6e7699;
    --gold:      #e7c987;
    --gold-br:   #ffd884;
    --gold-deep: #a9822f;
    --star:      #dfe8ff;
    --shadow:    0 24px 60px -30px rgba(0,0,0,0.85);
    --star-alpha: 1;
    --logo-filter: none;

    --font-display: "Iowan Old Style", "Palatino Linotype", "Palatino", "Book Antiqua", Georgia, serif;
    --font-body: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;

    --maxw: 1120px;
    --radius: 16px;
  }

  @media (prefers-color-scheme: light) {
    :root {
      /* Daytime sky — very light blue, deeper bronze accent */
      --bg:        #cfe1f2;
      --bg-2:      #dceaf7;
      --panel:     #eef6ff;
      --panel-2:   #e1edfb;
      --hair:      rgba(154, 115, 31, 0.24);
      --hair-cool: rgba(40, 60, 110, 0.14);
      --ink:       #171d33;
      --ink-soft:  #4b5474;
      --ink-faint: #838caa;
      --gold:      #8a6417;
      --gold-br:   #a9822f;
      --gold-deep: #6f4f12;
      --star:      #2b3a6b;
      --shadow:    0 22px 50px -32px rgba(30, 40, 80, 0.5);
      --star-alpha: 0.35;
      --logo-filter: invert(1);
    }
  }

  /* Viewer toggle must win in both directions */
  :root[data-theme="dark"] {
    --bg:#070a1c; --bg-2:#0a0f26; --panel:#111838; --panel-2:#16204a;
    --hair:rgba(231,201,135,0.16); --hair-cool:rgba(170,190,240,0.12);
    --ink:#e9ecf7; --ink-soft:#a3abca; --ink-faint:#6e7699;
    --gold:#e7c987; --gold-br:#ffd884; --gold-deep:#a9822f; --star:#dfe8ff;
    --shadow:0 24px 60px -30px rgba(0,0,0,0.85); --star-alpha:1; --logo-filter:none;
  }
  :root[data-theme="light"] {
    --bg:#cfe1f2; --bg-2:#dceaf7; --panel:#eef6ff; --panel-2:#e1edfb;
    --hair:rgba(154,115,31,0.24); --hair-cool:rgba(40,60,110,0.14);
    --ink:#171d33; --ink-soft:#4b5474; --ink-faint:#838caa;
    --gold:#8a6417; --gold-br:#a9822f; --gold-deep:#6f4f12; --star:#2b3a6b;
    --shadow:0 22px 50px -32px rgba(30,40,80,0.5); --star-alpha:0.35; --logo-filter:invert(1);
  }

  * { box-sizing: border-box; }

  body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: var(--font-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  .wrap { max-width: var(--maxw); margin-inline: auto; padding-inline: 24px; }

  a { color: inherit; text-decoration: none; }

  h1, h2, h3 { font-family: var(--font-display); font-weight: 600; text-wrap: balance; margin: 0; letter-spacing: 0.01em; }

  .eyebrow {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--gold);
  }

  /* ---------- starfield canvas ---------- */
  #stars {
    position: fixed; inset: 0; width: 100%; height: 100%;
    z-index: 0; pointer-events: none; opacity: var(--star-alpha);
  }

  /* ---------- nav ---------- */
  header.nav {
    position: sticky; top: 0; z-index: 50;
    backdrop-filter: blur(14px);
    background: color-mix(in srgb, var(--bg) 78%, transparent);
    border-bottom: 1px solid var(--hair-cool);
  }
  .nav-inner { display: flex; align-items: center; gap: 18px; height: 120px; }
  .brand { display: flex; align-items: center; }
  .nav-logo { height: 58px; width: auto; max-width: 220px; }

  .nav-burger { display: none; width: 40px; height: 40px; flex: none; border: 1px solid var(--hair); border-radius: 10px; background: transparent; cursor: pointer; padding: 0; place-items: center; }
  .nav-burger span { display: block; width: 18px; height: 2px; background: var(--ink-soft); margin: 2.5px auto; border-radius: 2px; transition: transform .2s, opacity .2s; }
  .nav-burger:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
  .nav-links { display: flex; gap: 26px; margin-left: auto; }
  .nav-links a { font-size: 0.92rem; color: var(--ink-soft); transition: color .18s; }
  .nav-links a:hover { color: var(--gold); }
  .nav-tools { display: flex; align-items: center; gap: 8px; }

  .chip {
    display: inline-flex; align-items: center; gap: 6px;
    height: 34px; padding: 0 12px; border-radius: 999px;
    border: 1px solid var(--hair); background: transparent;
    color: var(--ink-soft); font-family: var(--font-mono);
    font-size: 0.72rem; letter-spacing: 0.06em; cursor: pointer;
    transition: border-color .18s, color .18s, background .18s;
  }
  .chip:hover { color: var(--gold); border-color: var(--gold); }
  .chip:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
  .lang-seg { display: inline-flex; border: 1px solid var(--hair); border-radius: 999px; overflow: hidden; }
  .lang-seg a {
    display: inline-flex; align-items: center;
    border: 0; background: transparent; color: var(--ink-faint);
    font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.08em;
    padding: 0 11px; height: 34px; cursor: pointer; transition: color .18s, background .18s;
  }
  .lang-seg a[aria-current="true"] { color: var(--bg); background: var(--gold); }
  .lang-seg a:focus-visible { outline: 2px solid var(--gold); outline-offset: -2px; }

  /* ---------- layout sections ---------- */
  main { position: relative; z-index: 1; }
  section { position: relative; }
  section, #install { scroll-margin-top: 134px; }
  .section-pad { padding-block: clamp(64px, 9vw, 128px); }

  /* ---------- brand wordmark (freed logo) ---------- */
  .wordmark { display: block; filter: var(--logo-filter); }
  .hero-logo { width: min(430px, 76%); height: auto; margin: 0 auto clamp(18px, 3vw, 30px); }
  .foot-logo { width: 210px; height: auto; }

  /* ---------- hero ---------- */
  .hero { padding-block: clamp(72px, 12vw, 150px) clamp(48px, 7vw, 96px); text-align: center; }
  .hero .halo {
    position: absolute; left: 50%; top: 12%; transform: translateX(-50%);
    width: min(760px, 92vw); height: 420px; z-index: -1;
    background: radial-gradient(closest-side, color-mix(in srgb, var(--gold) 22%, transparent), transparent 72%);
    filter: blur(20px); opacity: 0.6; pointer-events: none;
  }
  .hero h1 {
    font-size: clamp(2.6rem, 6.4vw, 4.7rem);
    line-height: 1.02; margin-top: 22px;
  }
  .hero h1 .accent {
    background: linear-gradient(180deg, var(--gold-br), var(--gold-deep));
    -webkit-background-clip: text; background-clip: text; color: transparent;
  }
  .hero p.lead {
    font-size: clamp(1.05rem, 2vw, 1.3rem);
    color: var(--ink-soft); max-width: 60ch; margin: 22px auto 0;
  }
  .cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 34px; }
  .btn {
    display: inline-flex; align-items: center; gap: 9px;
    height: 50px; padding: 0 26px; border-radius: 999px;
    font-size: 0.98rem; font-weight: 600; cursor: pointer;
    border: 1px solid transparent; transition: transform .15s, box-shadow .2s, background .2s, border-color .2s;
  }
  .btn-primary { background: linear-gradient(180deg, var(--gold-br), var(--gold-deep)); color: #1a1204; box-shadow: 0 12px 30px -12px color-mix(in srgb, var(--gold) 70%, transparent); }
  .btn-primary:hover { transform: translateY(-2px); }
  .btn-ghost { border-color: var(--hair); color: var(--ink); background: color-mix(in srgb, var(--panel) 55%, transparent); }
  .btn-ghost:hover { border-color: var(--gold); color: var(--gold); }
  .btn:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }

  .hero-meta { display: flex; gap: 10px 22px; justify-content: center; flex-wrap: wrap; margin-top: 30px; font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.05em; color: var(--ink-faint); }
  .hero-meta span { display: inline-flex; align-items: center; gap: 7px; }
  .dot { width: 5px; height: 5px; border-radius: 50%; background: var(--gold); }

  /* ---------- pitch ---------- */
  .pitch { display: grid; grid-template-columns: 1fr; gap: 20px; }
  .pitch h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); }
  .pitch p { color: var(--ink-soft); font-size: 1.08rem; max-width: 68ch; }
  .stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 16px; margin-top: 36px; }
  .stat { border: 1px solid var(--hair-cool); border-radius: var(--radius); padding: 22px; background: color-mix(in srgb, var(--panel) 60%, transparent); }
  .stat .n { font-family: var(--font-display); font-size: 2.1rem; color: var(--gold); font-variant-numeric: tabular-nums; }
  .stat .l { font-size: 0.9rem; color: var(--ink-soft); margin-top: 4px; }

  /* ---------- tools ---------- */
  .section-head { display: flex; flex-direction: column; gap: 12px; margin-bottom: 44px; }
  .section-head h2 { font-size: clamp(1.8rem, 3.6vw, 2.7rem); }
  .section-head p { color: var(--ink-soft); max-width: 62ch; margin: 0; }

  .tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 18px; }
  .tool-card {
    position: relative; border: 1px solid var(--hair-cool); border-radius: var(--radius);
    padding: 26px; background:
      linear-gradient(180deg, color-mix(in srgb, var(--panel) 85%, transparent), color-mix(in srgb, var(--bg-2) 60%, transparent));
    display: flex; flex-direction: column; gap: 12px; overflow: hidden;
    transition: transform .18s, border-color .18s, box-shadow .25s;
  }
  .tool-card::before {
    content: ""; position: absolute; inset: 0 0 auto 0; height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent); opacity: 0; transition: opacity .25s;
  }
  .tool-card:hover { transform: translateY(-4px); border-color: var(--hair); box-shadow: var(--shadow); }
  .tool-card:hover::before { opacity: 0.7; }
  .tool-ico {
    width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center;
    background: radial-gradient(closest-side, color-mix(in srgb, var(--gold) 20%, transparent), transparent);
    border: 1px solid var(--hair);
  }
  .tool-ico svg { width: 26px; height: 26px; stroke: var(--gold); fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
  .tool-card h3 { font-size: 1.24rem; display: flex; align-items: baseline; gap: 10px; }
  .tool-card .file { font-family: var(--font-mono); font-size: 0.68rem; color: var(--ink-faint); letter-spacing: 0.03em; }
  .tool-card p { margin: 0; color: var(--ink-soft); font-size: 0.96rem; }
  .tool-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; padding-top: 6px; }
  .tag {
    font-family: var(--font-mono); font-size: 0.64rem; letter-spacing: 0.03em;
    padding: 3px 8px; border-radius: 6px; color: var(--ink-soft);
    border: 1px solid var(--hair-cool); background: color-mix(in srgb, var(--panel-2) 40%, transparent);
  }
  .tag.req { color: var(--gold); border-color: var(--gold); background: color-mix(in srgb, var(--gold) 10%, transparent); }
  .doc-body .uses { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 6px; }

  /* ---------- docs ---------- */
  .docs { border-top: 1px solid var(--hair-cool); }
  .docs-grid { display: grid; grid-template-columns: 1fr; gap: 40px; }
  @media (min-width: 900px) { .docs-grid { grid-template-columns: 1.1fr 1fr; } }

  .install-card {
    border: 1px solid var(--hair); border-radius: var(--radius); overflow: hidden;
    background: color-mix(in srgb, var(--panel) 70%, transparent);
  }
  .install-head { padding: 16px 20px; border-bottom: 1px solid var(--hair-cool); display: flex; align-items: center; gap: 10px; font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.05em; color: var(--ink-soft); }
  .install-head .dots { display: inline-flex; gap: 6px; }
  .install-head .dots i { width: 10px; height: 10px; border-radius: 50%; background: var(--hair); display: block; }
  .steps { margin: 0; padding: 22px 22px 22px 20px; list-style: none; counter-reset: step; display: flex; flex-direction: column; gap: 18px; }
  .steps li { counter-increment: step; display: grid; grid-template-columns: 30px 1fr; gap: 14px; align-items: start; }
  .steps li::before {
    content: counter(step); font-family: var(--font-mono); font-size: 0.82rem;
    width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center;
    border: 1px solid var(--gold); color: var(--gold); font-variant-numeric: tabular-nums;
  }
  .steps li h4 { margin: 0 0 3px; font-family: var(--font-body); font-size: 0.98rem; font-weight: 600; }
  .steps li p { margin: 0; color: var(--ink-soft); font-size: 0.92rem; }
  code {
    font-family: var(--font-mono); font-size: 0.85em;
    background: color-mix(in srgb, var(--gold) 12%, transparent);
    color: var(--gold); padding: 1px 6px; border-radius: 6px;
    overflow-wrap: anywhere;
  }
  .repo-box { border: 1px dashed var(--hair); border-radius: 12px; padding: 16px 18px; margin-top: 6px; display: flex; flex-direction: column; gap: 4px; }
  .repo-box a { color: var(--gold); overflow-wrap: anywhere; }

  .doc-list { display: flex; flex-direction: column; gap: 10px; }
  details.doc {
    border: 1px solid var(--hair-cool); border-radius: 12px; overflow: hidden;
    background: color-mix(in srgb, var(--panel) 50%, transparent);
  }
  details.doc summary {
    list-style: none; cursor: pointer; padding: 16px 18px;
    display: flex; align-items: center; gap: 12px; font-weight: 600;
  }
  details.doc summary::-webkit-details-marker { display: none; }
  details.doc summary .caret { margin-left: auto; color: var(--ink-faint); transition: transform .2s; }
  details.doc[open] summary .caret { transform: rotate(90deg); color: var(--gold); }
  details.doc .doc-body { padding: 0 18px 18px 48px; color: var(--ink-soft); font-size: 0.95rem; }
  details.doc summary .mini { width: 26px; height: 26px; display: grid; place-items: center; }
  details.doc summary .mini svg { width: 20px; height: 20px; stroke: var(--gold); fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }

  /* ---------- support / kaffeekasse (prominent) ---------- */
  .support-card {
    display: flex; flex-direction: column; align-items: center; text-align: center; gap: 16px;
    border: 1px solid var(--gold); border-radius: 24px;
    padding: clamp(38px, 6vw, 68px);
    background:
      radial-gradient(130% 120% at 50% 0%, color-mix(in srgb, var(--gold) 20%, transparent), transparent 62%),
      color-mix(in srgb, var(--panel) 78%, transparent);
    box-shadow: var(--shadow), 0 0 70px -24px color-mix(in srgb, var(--gold) 55%, transparent);
  }
  .support-ico {
    width: 74px; height: 74px; flex: none; border-radius: 20px; display: grid; place-items: center;
    border: 1px solid var(--gold); background: color-mix(in srgb, var(--gold) 14%, transparent);
  }
  .support-ico svg { width: 38px; height: 38px; stroke: var(--gold); fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
  .support-card h2 { font-size: clamp(2rem, 4.4vw, 3rem); }
  .support-lead { margin: 0; color: var(--ink-soft); max-width: 52ch; font-size: 1.06rem; }
  .paypal-btn {
    display: inline-flex; align-items: center; gap: 12px; margin-top: 10px;
    height: 58px; padding: 0 30px; border-radius: 999px;
    background: #ffc439; color: #0a0a0a; font-weight: 700; font-size: 1.05rem; cursor: pointer;
    box-shadow: 0 14px 34px -10px rgba(255, 196, 57, 0.6);
    transition: transform .15s, background .2s, box-shadow .2s;
  }
  .paypal-btn:hover { background: #f0b90b; transform: translateY(-2px); }
  .paypal-btn:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
  .pp-logo { font-style: italic; font-weight: 800; font-size: 1.18rem; letter-spacing: -0.02em; }
  .pp1 { color: #253b80; } .pp2 { color: #179bd7; }
  .pp-div { width: 1px; height: 22px; background: rgba(0, 0, 0, 0.22); }
  .support-note { margin: 4px 0 0; font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.04em; color: var(--ink-faint); }

  /* ---------- footer ---------- */
  footer {
    border-top: 1px solid var(--hair-cool); margin-top: 40px;
    background: color-mix(in srgb, var(--bg-2) 80%, transparent);
    position: relative; z-index: 1;
  }
  .foot-grid { display: flex; flex-wrap: wrap; gap: 30px; justify-content: space-between; padding-block: 48px; }
  .foot-brand { display: flex; align-items: center; gap: 12px; }
  .foot-brand svg { width: 40px; height: 40px; }
  .foot-col h5 { margin: 0 0 12px; font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-faint); }
  .foot-col a { display: block; color: var(--ink-soft); font-size: 0.92rem; padding: 3px 0; }
  .foot-col a:hover { color: var(--gold); }
  .legal { border-top: 1px solid var(--hair-cool); padding-block: 22px; display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: space-between; color: var(--ink-faint); font-size: 0.82rem; }
  .legal .mono { font-family: var(--font-mono); letter-spacing: 0.04em; }

  /* ---------- responsive: tablet ---------- */
  @media (max-width: 960px) {
    .wrap { padding-inline: 22px; }
    .docs-grid { grid-template-columns: 1fr; gap: 34px; }
    .support-card { gap: 20px; }
  }

  /* ---------- responsive: mobile nav (phone + small tablet portrait) ---------- */
  @media (max-width: 780px) {
    .nav-links {
      position: absolute; top: 100%; left: 0; right: 0;
      flex-direction: column; gap: 0; margin: 0;
      background: color-mix(in srgb, var(--bg) 96%, transparent);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--hair-cool);
      padding: 6px 22px 14px;
      transform: translateY(-10px); opacity: 0; pointer-events: none;
      transition: opacity .2s ease, transform .2s ease;
    }
    .nav-links a { padding: 13px 2px; font-size: 1rem; border-bottom: 1px solid var(--hair-cool); }
    .nav-links a:last-child { border-bottom: 0; }
    header.nav.open .nav-links { transform: none; opacity: 1; pointer-events: auto; }
    .nav-tools { margin-left: auto; }
    .nav-burger { display: grid; }
    header.nav.open .nav-burger span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
    header.nav.open .nav-burger span:nth-child(2) { opacity: 0; }
    header.nav.open .nav-burger span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }
  }

  /* ---------- responsive: phone ---------- */
  @media (max-width: 560px) {
    .wrap { padding-inline: 16px; }
    .nav-inner { gap: 10px; height: 82px; }
    .nav-logo { height: 44px; }
    section, #install { scroll-margin-top: 96px; }
    #theme-lbl { display: none; }
    .chip { padding: 0 11px; }
    .section-pad { padding-block: clamp(48px, 12vw, 80px); }
    .tools-grid { grid-template-columns: 1fr; }
    .support-card { padding: 34px 20px; }
    .paypal-btn { width: 100%; justify-content: center; }
    .hero-meta { gap: 8px 16px; }
    .foot-grid { gap: 24px; }
    details.doc .doc-body { padding-left: 18px; }
  }

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