/* Neko3DScanner — support & privacy site.
   Self-contained: no webfonts, no CDN, no build step. Drop `docs/` on GitHub Pages. */

:root {
    --bg: #ffffff;
    --bg-card: #f5f5f7;
    --text: #1d1d1f;
    --text-dim: #6e6e73;
    --accent: #0071e3;
    --rule: #e5e5ea;
    --warn-bg: #fff4e5;
    --warn-rule: #ffb340;
    --warn-text: #7a4a00;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #000000;
        --bg-card: #1c1c1e;
        --text: #f5f5f7;
        --text-dim: #98989d;
        --accent: #2997ff;
        --rule: #2c2c2e;
        --warn-bg: #2a1f0d;
        --warn-rule: #b26f00;
        --warn-text: #ffd08a;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    padding: 0 20px 80px;
    background: var(--bg);
    color: var(--text);
    font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
          "Noto Sans TC", "Hiragino Sans", sans-serif;
    -webkit-text-size-adjust: 100%;
}

.wrap { max-width: 720px; margin: 0 auto; }

/* Header ------------------------------------------------------------------ */

header {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    justify-content: space-between;
    padding: 28px 0 20px;
    border-bottom: 1px solid var(--rule);
    margin-bottom: 32px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 17px;
    color: var(--text);
    text-decoration: none;
}

.brand svg { width: 26px; height: 26px; flex: none; }

nav { display: flex; gap: 18px; font-size: 15px; }
nav a { color: var(--text-dim); text-decoration: none; }
nav a:hover, nav a[aria-current="page"] { color: var(--accent); }

/* Language switch --------------------------------------------------------- */

.lang-switch {
    display: flex;
    gap: 2px;
    padding: 2px;
    background: var(--bg-card);
    border-radius: 8px;
}

.lang-switch button {
    appearance: none;
    border: 0;
    background: transparent;
    color: var(--text-dim);
    font: inherit;
    font-size: 13px;
    padding: 5px 11px;
    border-radius: 6px;
    cursor: pointer;
}

.lang-switch button[aria-current="true"] {
    background: var(--bg);
    color: var(--text);
    font-weight: 600;
    box-shadow: 0 1px 3px rgba(0, 0, 0, .12);
}

/* Language panes. Without JS every language shows, stacked — a policy page must
   never depend on script to be readable. The inline <head> script sets
   data-active-lang before first paint, so there is no flash. */
.js [data-lang] { display: none; }
:root[data-active-lang="zh"] [data-lang="zh"],
:root[data-active-lang="en"] [data-lang="en"],
:root[data-active-lang="ja"] [data-lang="ja"] { display: block; }

/* Type -------------------------------------------------------------------- */

h1 { font-size: 34px; line-height: 1.2; letter-spacing: -.02em; margin: 0 0 6px; }
h2 {
    font-size: 22px;
    letter-spacing: -.01em;
    margin: 44px 0 12px;
    padding-top: 20px;
    border-top: 1px solid var(--rule);
}
h2:first-of-type { border-top: 0; padding-top: 0; margin-top: 32px; }
h3 { font-size: 17px; margin: 26px 0 8px; }

.sub { color: var(--text-dim); font-size: 17px; margin: 0 0 4px; }
.updated { color: var(--text-dim); font-size: 14px; margin: 0; }

p { margin: 0 0 14px; }
ul { margin: 0 0 14px; padding-left: 22px; }
li { margin-bottom: 6px; }
a { color: var(--accent); }
code {
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: .88em;
    background: var(--bg-card);
    padding: 2px 5px;
    border-radius: 4px;
}

/* Blocks ------------------------------------------------------------------ */

.card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px 22px;
    margin: 0 0 16px;
}
.card > :last-child { margin-bottom: 0; }
.card h3 { margin-top: 0; }

.callout {
    background: var(--warn-bg);
    border-left: 3px solid var(--warn-rule);
    color: var(--warn-text);
    border-radius: 8px;
    padding: 16px 18px;
    margin: 0 0 20px;
}
.callout > :last-child { margin-bottom: 0; }
.callout strong { color: inherit; }

.tldr {
    font-size: 19px;
    line-height: 1.55;
    border-left: 3px solid var(--accent);
    padding-left: 18px;
    margin: 0 0 28px;
}

.faq { margin-bottom: 22px; }
.faq p { margin-bottom: 6px; }
.q { font-weight: 600; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 560px) { .two-col { grid-template-columns: 1fr; } }

footer {
    margin-top: 56px;
    padding-top: 20px;
    border-top: 1px solid var(--rule);
    color: var(--text-dim);
    font-size: 14px;
}
footer a { color: var(--text-dim); }
