/* ==========================================================================
   TraDiaChi design system
   One stylesheet on purpose: ~20 KB, one request, cached a day. Sections:
   1 fonts · 2 tokens (light/dark) · 3 base · 4 layout · 5 components ·
   6 page sections · 7 utilities
   ========================================================================== */

/* 1. Fonts - Be Vietnam Pro, self-hosted (public/fonts, OFL) ------------- */
@font-face { font-family: "Be Vietnam Pro"; font-style: normal; font-weight: 400; font-display: swap; src: url(/fonts/be-vietnam-pro-400-vietnamese.woff2) format("woff2"); unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB; }
@font-face { font-family: "Be Vietnam Pro"; font-style: normal; font-weight: 400; font-display: swap; src: url(/fonts/be-vietnam-pro-400-latin.woff2) format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Be Vietnam Pro"; font-style: normal; font-weight: 500; font-display: swap; src: url(/fonts/be-vietnam-pro-500-vietnamese.woff2) format("woff2"); unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB; }
@font-face { font-family: "Be Vietnam Pro"; font-style: normal; font-weight: 500; font-display: swap; src: url(/fonts/be-vietnam-pro-500-latin.woff2) format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Be Vietnam Pro"; font-style: normal; font-weight: 600; font-display: swap; src: url(/fonts/be-vietnam-pro-600-vietnamese.woff2) format("woff2"); unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB; }
@font-face { font-family: "Be Vietnam Pro"; font-style: normal; font-weight: 600; font-display: swap; src: url(/fonts/be-vietnam-pro-600-latin.woff2) format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Be Vietnam Pro"; font-style: normal; font-weight: 700; font-display: swap; src: url(/fonts/be-vietnam-pro-700-vietnamese.woff2) format("woff2"); unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB; }
@font-face { font-family: "Be Vietnam Pro"; font-style: normal; font-weight: 700; font-display: swap; src: url(/fonts/be-vietnam-pro-700-latin.woff2) format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }

/* 2. Tokens --------------------------------------------------------------
   Teal = trust/data (primary); amber = history (the product's moat);
   status colours only for match state. Contrast of text tokens >= 4.5:1
   on --bg and --surface in both themes. */
:root {
  --font: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", Consolas, monospace;

  --bg: #f6f7f5;
  --surface: #ffffff;
  --surface-2: #f0f3f1;
  --border: #dfe5e2;
  --border-strong: #c7d1cd;
  --text: #12232a;
  --text-2: #3d4f56;
  --muted: #5b6b71;
  --primary: #0b6b69;
  --primary-hover: #085553;
  --primary-soft: #e2f1ef;
  --primary-ink: #ffffff;
  --accent: #9a5b00;        /* history: text-safe amber */
  --accent-strong: #c27a0a; /* history: lines, dots */
  --accent-soft: #fdf2df;
  --ok: #17784a; --ok-soft: #e3f4ea;
  --warn: #8f5a00; --warn-soft: #fff3d6;
  --bad: #b42318; --bad-soft: #fde7e5;
  --info: #2c57b0; --info-soft: #e7eefb;
  --code-bg: #0f1c22; --code-text: #e3edee; --code-muted: #8fa3a8; --code-key: #7fd1c7; --code-str: #f0c47a;
  --focus: #2c7be5;
  --ai: #5b4fd6;            /* AI accent: labels, command glyph, processing marks only */
  --ai-soft: #ecebfb;

  --r-sm: 6px; --r: 10px; --r-lg: 14px; --r-full: 999px;
  --shadow-sm: 0 1px 2px rgba(16, 35, 42, .06);
  --shadow: 0 1px 2px rgba(16, 35, 42, .05), 0 4px 16px rgba(16, 35, 42, .06);
  --shadow-lg: 0 2px 4px rgba(16, 35, 42, .05), 0 12px 32px rgba(16, 35, 42, .10);

  /* compact scale: no step above 48px, sections are spaced by --s5 on each side */
  --s1: 4px; --s2: 8px; --s3: 12px; --s4: 16px; --s5: 24px; --s6: 32px; --s7: 40px; --s8: 48px;
  --container: 1180px;
  --header-h: 64px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0c1316; --surface: #111b1f; --surface-2: #162328; --border: #22323a; --border-strong: #2f434c;
    --text: #e7eff0; --text-2: #c4d1d4; --muted: #95a7ad;
    --primary: #3cb7ac; --primary-hover: #5ccabf; --primary-soft: #12302e; --primary-ink: #04201e;
    --accent: #e8ae55; --accent-strong: #e8ae55; --accent-soft: #2e2413; --ai: #a9a2ff; --ai-soft: #25224a;
    --ok: #5ccf93; --ok-soft: #10301f; --warn: #f0bd57; --warn-soft: #33270f; --bad: #ff8a80; --bad-soft: #3a1714; --info: #8ab0ff; --info-soft: #172542;
    --code-bg: #0a1215; --shadow: 0 1px 2px rgba(0,0,0,.4), 0 6px 20px rgba(0,0,0,.35); --shadow-lg: 0 12px 32px rgba(0,0,0,.45);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0c1316; --surface: #111b1f; --surface-2: #162328; --border: #22323a; --border-strong: #2f434c;
  --text: #e7eff0; --text-2: #c4d1d4; --muted: #95a7ad;
  --primary: #3cb7ac; --primary-hover: #5ccabf; --primary-soft: #12302e; --primary-ink: #04201e;
  --accent: #e8ae55; --accent-strong: #e8ae55; --accent-soft: #2e2413; --ai: #a9a2ff; --ai-soft: #25224a;
  --ok: #5ccf93; --ok-soft: #10301f; --warn: #f0bd57; --warn-soft: #33270f; --bad: #ff8a80; --bad-soft: #3a1714; --info: #8ab0ff; --info-soft: #172542;
  --code-bg: #0a1215; --shadow: 0 1px 2px rgba(0,0,0,.4), 0 6px 20px rgba(0,0,0,.35); --shadow-lg: 0 12px 32px rgba(0,0,0,.45);
  color-scheme: dark;
}

/* 3. Base ------------------------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: calc(var(--header-h) + 12px); }
body { margin: 0; font-family: var(--font); font-size: 16px; line-height: 1.6; color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 var(--s3); font-weight: 700; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.75rem, 1.2rem + 2.4vw, 2.75rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 1.25rem + 0.8vw, 1.875rem); letter-spacing: -0.02em; }
h3 { font-size: 1.1rem; font-weight: 600; }
p { margin: 0 0 var(--s4); }
a { color: var(--primary); text-underline-offset: 2px; }
a:hover { color: var(--primary-hover); }
img, svg { max-width: 100%; }
code, pre, kbd { font-family: var(--mono); font-size: 0.9em; }
:not(pre) > code { background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--r-sm); padding: 0.05em 0.35em; }
small { font-size: 0.85em; }
hr { border: 0; border-top: 1px solid var(--border); margin: var(--s6) 0; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 4px; }
::selection { background: var(--primary-soft); }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; left: var(--s3); top: -48px; z-index: 100; padding: var(--s2) var(--s4); background: var(--primary); color: var(--primary-ink); border-radius: var(--r); text-decoration: none; }
.skip-link:focus { top: var(--s3); }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; } }

/* 4. Layout ---------------------------------------------------------------- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--s4); }
@media (min-width: 720px) { .container { padding: 0 var(--s5); } }
.section { padding: 20px 0; } /* 40px between blocks */
.section-tight { padding: var(--s6) 0; }
.section-alt { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { max-width: 780px; margin-bottom: var(--s3); }
.section-head h2 { margin-bottom: var(--s1); }
.section-head p { color: var(--muted); font-size: 0.95rem; margin: 0; }
.eyebrow { display: inline-block; font-size: 0.72rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--primary); margin-bottom: 6px; }
.eyebrow.history { color: var(--accent); }
.grid { display: grid; gap: var(--s4); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 210px), 1fr)); }
.stack > * + * { margin-top: var(--s4); }
.split { display: grid; gap: var(--s6); align-items: start; }
@media (min-width: 960px) { .split { grid-template-columns: 1fr 1fr; } .split-60 { grid-template-columns: 3fr 2fr; } }
main { min-height: 60vh; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: saturate(1.4) blur(8px); border-bottom: 1px solid var(--border); }
.site-header .container { display: flex; align-items: center; gap: var(--s4); height: var(--header-h); }
.brand { display: inline-flex; align-items: center; gap: var(--s2); color: var(--text); text-decoration: none; font-weight: 700; font-size: 1.15rem; letter-spacing: -0.02em; }
.brand:hover { color: var(--text); }
.brand svg { flex: none; }
.brand b { color: var(--primary); font-weight: 700; }
.nav { display: none; margin-left: var(--s4); gap: var(--s1); }
.nav a { color: var(--text-2); text-decoration: none; font-weight: 500; font-size: 0.95rem; padding: var(--s2) var(--s3); border-radius: var(--r-sm); }
.nav a:hover { background: var(--surface-2); color: var(--text); }
.nav a[aria-current="page"] { color: var(--primary); background: var(--primary-soft); }
.header-actions { margin-left: auto; display: flex; align-items: center; gap: var(--s2); }
.header-actions .btn-sm { display: none; }
@media (min-width: 960px) { .nav { display: flex; } .header-actions .btn-sm { display: inline-flex; } .nav-mobile { display: none; } }
.nav-mobile { position: relative; }
.nav-mobile > summary { list-style: none; cursor: pointer; display: grid; place-items: center; width: 44px; height: 44px; border-radius: var(--r); border: 1px solid var(--border); background: var(--surface); }
.nav-mobile > summary::-webkit-details-marker { display: none; }
.nav-mobile[open] > summary { background: var(--surface-2); }
.nav-mobile .panel { position: absolute; right: 0; top: 52px; width: min(88vw, 340px); background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); box-shadow: var(--shadow-lg); padding: var(--s3); display: grid; gap: 2px; }
.nav-mobile .panel a { display: block; padding: var(--s3); border-radius: var(--r); color: var(--text); text-decoration: none; font-weight: 500; }
.nav-mobile .panel a:hover, .nav-mobile .panel a[aria-current="page"] { background: var(--primary-soft); color: var(--primary); }
.nav-mobile .panel hr { margin: var(--s2) 0; }
.theme-toggle { width: 40px; height: 40px; display: grid; place-items: center; border-radius: var(--r); border: 1px solid var(--border); background: var(--surface); color: var(--text-2); cursor: pointer; }
.theme-toggle:hover { color: var(--text); background: var(--surface-2); }
.theme-toggle .sun { display: none; }
:root[data-theme="dark"] .theme-toggle .sun { display: block; }
:root[data-theme="dark"] .theme-toggle .moon { display: none; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .theme-toggle .sun { display: block; } :root:not([data-theme="light"]) .theme-toggle .moon { display: none; } }

/* Footer */
.site-footer { margin-top: var(--s7); background: var(--surface); border-top: 1px solid var(--border); padding: var(--s6) 0 var(--s5); color: var(--muted); font-size: 0.92rem; }
.footer-grid { display: grid; gap: var(--s5); grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.footer-grid h2 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text); margin-bottom: var(--s3); }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--s2); }
.footer-grid a { color: var(--muted); text-decoration: none; }
.footer-grid a:hover { color: var(--primary); text-decoration: underline; }
.footer-brand p { max-width: 36ch; }
.footer-bottom { margin-top: var(--s6); padding-top: var(--s4); border-top: 1px solid var(--border); display: flex; flex-wrap: wrap; gap: var(--s3) var(--s5); justify-content: space-between; font-size: 0.85rem; }

/* 5. Components -------------------------------------------------------------- */
/* Button */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--s2); min-height: 44px; padding: 0 var(--s5); border-radius: var(--r); border: 1px solid transparent; font: inherit; font-weight: 600; font-size: 0.97rem; line-height: 1; text-decoration: none; cursor: pointer; white-space: nowrap; transition: background .15s, border-color .15s, color .15s; }
.btn-primary { background: var(--primary); color: var(--primary-ink); }
.btn-primary:hover { background: var(--primary-hover); color: var(--primary-ink); }
.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--border-strong); }
.btn-secondary:hover { background: var(--surface-2); color: var(--text); }
.btn-ghost { background: transparent; color: var(--primary); }
.btn-ghost:hover { background: var(--primary-soft); }
.btn-sm { min-height: 36px; padding: 0 var(--s3); font-size: 0.9rem; }
.btn-lg { min-height: 52px; padding: 0 var(--s6); font-size: 1.02rem; }
.btn[disabled], .btn[aria-disabled="true"] { opacity: .55; cursor: not-allowed; }
.btn .spinner { width: 16px; height: 16px; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.btn-row { display: flex; flex-wrap: wrap; gap: var(--s3); }

/* Input */
.field { display: grid; gap: var(--s2); }
.field label, .label { font-weight: 600; font-size: 0.92rem; color: var(--text); }
.field .hint { font-size: 0.85rem; color: var(--muted); margin: 0; }
.input, .select, .textarea { width: 100%; min-height: 44px; padding: 10px 14px; font: inherit; font-size: 16px; color: var(--text); background: var(--surface); border: 1px solid var(--border-strong); border-radius: var(--r); }
.textarea { min-height: 120px; resize: vertical; font-family: var(--mono); font-size: 0.92rem; line-height: 1.5; }
.input:focus, .select:focus, .textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 25%, transparent); }
.input::placeholder { color: var(--muted); opacity: .85; }

/* Search box */
.searchbox { display: flex; gap: var(--s2); padding: var(--s2); background: var(--surface); border: 1px solid var(--border-strong); border-radius: calc(var(--r-lg) + 2px); box-shadow: var(--shadow); }
.searchbox:focus-within { border-color: var(--primary); box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 18%, transparent), var(--shadow); }
.searchbox .icon { display: none; align-self: center; margin-left: var(--s3); color: var(--muted); flex: none; }
.searchbox input { flex: 1; min-width: 0; border: 0; background: transparent; font: inherit; font-size: 17px; color: var(--text); padding: 10px 8px; }
.searchbox input:focus { outline: none; }
.searchbox .btn { min-height: 48px; }
@media (min-width: 600px) { .searchbox .icon { display: block; } }
@media (max-width: 479px) { .searchbox { flex-direction: column; } .searchbox .btn { width: 100%; } }
.chips { display: flex; flex-wrap: wrap; gap: var(--s2); margin-top: var(--s3); align-items: center; }
.chips .chips-label { font-size: 0.85rem; color: var(--muted); margin-right: var(--s1); }
.chip { display: inline-flex; align-items: center; gap: 6px; min-height: 32px; padding: 0 var(--s3); border-radius: var(--r-full); border: 1px solid var(--border); background: var(--surface); color: var(--text-2); font-size: 0.87rem; text-decoration: none; cursor: pointer; font-family: inherit; }
.chip:hover { border-color: var(--primary); color: var(--primary); }

/* Quick actions */
.quick-actions { display: flex; gap: var(--s2); margin-top: var(--s4); overflow-x: auto; scrollbar-width: none; padding-bottom: 2px; }
.quick-actions::-webkit-scrollbar { display: none; }
.qa { flex: none; display: inline-flex; align-items: center; gap: var(--s2); min-height: 40px; padding: 0 var(--s4); border-radius: var(--r); background: var(--surface-2); border: 1px solid var(--border); color: var(--text); text-decoration: none; font-weight: 500; font-size: 0.92rem; }
.qa:hover { background: var(--primary-soft); border-color: color-mix(in srgb, var(--primary) 40%, transparent); color: var(--primary); }
.qa svg { color: var(--primary); }
.qa.history svg { color: var(--accent-strong); }

/* Card */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); padding: var(--s5); }
.card-hover { transition: border-color .15s, box-shadow .15s, transform .15s; }
.card-hover:hover { border-color: var(--border-strong); box-shadow: var(--shadow); }
.card h3 { margin-bottom: var(--s2); }
.card p:last-child { margin-bottom: 0; }
.card-muted { background: var(--surface-2); box-shadow: none; }

/* Tool card */
.tool-card { position: relative; display: flex; flex-direction: column; gap: var(--s2); padding: var(--s5); background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); text-decoration: none; color: var(--text); transition: border-color .15s, box-shadow .15s; }
.tool-card:hover { border-color: color-mix(in srgb, var(--primary) 45%, var(--border)); box-shadow: var(--shadow); color: var(--text); }
.tool-card .tool-icon { width: 40px; height: 40px; display: grid; place-items: center; border-radius: var(--r); background: var(--primary-soft); color: var(--primary); }
.tool-card.history .tool-icon { background: var(--accent-soft); color: var(--accent); }
.tool-card h3 { margin: var(--s2) 0 0; font-size: 1.02rem; }
.tool-card p { margin: 0; color: var(--muted); font-size: 0.93rem; }
.tool-card .badge { position: absolute; top: var(--s4); right: var(--s4); }
.tool-card .more { margin-top: auto; padding-top: var(--s2); font-size: 0.9rem; font-weight: 600; color: var(--primary); }
.tool-card[aria-disabled="true"] { opacity: .8; }

/* Badge */
.badge { display: inline-flex; align-items: center; gap: 6px; min-height: 22px; padding: 0 9px; border-radius: var(--r-full); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.01em; white-space: nowrap; border: 1px solid transparent; }
.badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge-available { background: var(--ok-soft); color: var(--ok); }
.badge-beta { background: var(--info-soft); color: var(--info); }
.badge-soon { background: var(--surface-2); color: var(--muted); border-color: var(--border); }
.badge-exact { background: var(--ok-soft); color: var(--ok); }
.badge-fuzzy { background: var(--warn-soft); color: var(--warn); }
.badge-ambiguous { background: var(--warn-soft); color: var(--warn); }
.badge-not_found { background: var(--bad-soft); color: var(--bad); }
.badge-history { background: var(--accent-soft); color: var(--accent); }
.badge-ai { background: var(--ai-soft); color: var(--ai); }

/* Stat card */
.stats { display: grid; gap: var(--s3); grid-template-columns: repeat(auto-fit, minmax(min(100%, 170px), 1fr)); }
.stat { padding: var(--s4) var(--s5); background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); }
.stat .value { font-size: 1.85rem; font-weight: 700; letter-spacing: -0.02em; line-height: 1.15; font-variant-numeric: tabular-nums; }
.stat .label { display: block; margin-top: var(--s1); font-size: 0.88rem; font-weight: 500; color: var(--muted); }
.stat.history .value { color: var(--accent); }

/* Source note / data quality */
.source-note { display: flex; flex-wrap: wrap; gap: var(--s1) var(--s4); font-size: 0.84rem; color: var(--muted); }
.source-note svg { vertical-align: -2px; margin-right: 4px; }
.quality { display: grid; gap: 0; border: 1px solid var(--border); border-radius: var(--r); overflow: hidden; margin: var(--s3) 0; }
.quality > div { display: grid; grid-template-columns: 10rem 1fr; gap: var(--s3); padding: 7px var(--s4); border-top: 1px solid var(--border); font-size: 0.92rem; }
.quality > div:first-child { border-top: 0; }
.quality dt { color: var(--muted); margin: 0; }
.quality dd { margin: 0; }
@media (max-width: 559px) { .quality > div { grid-template-columns: 1fr; gap: 2px; } }

/* Details / disclosure */
.disclosure { border: 1px solid var(--border); border-radius: var(--r); background: var(--surface); }
.disclosure > summary { cursor: pointer; padding: var(--s3) var(--s4); font-weight: 600; list-style: none; display: flex; align-items: center; gap: var(--s2); }
.disclosure > summary::-webkit-details-marker { display: none; }
.disclosure > summary::before { content: ""; width: 8px; height: 8px; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: rotate(-45deg); transition: transform .15s; margin-right: 4px; }
.disclosure[open] > summary::before { transform: rotate(45deg); }
.disclosure > .body { padding: 0 var(--s4) var(--s4); color: var(--text-2); font-size: 0.94rem; }
.disclosure + .disclosure { margin-top: var(--s2); }

/* Timeline */
.timeline { list-style: none; margin: 0; padding: 0; position: relative; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 8px; bottom: 8px; width: 2px; background: color-mix(in srgb, var(--accent-strong) 35%, var(--border)); }
.timeline > li { position: relative; padding: 0 0 var(--s5) var(--s6); }
.timeline > li:last-child { padding-bottom: 0; }
.timeline > li::before { content: ""; position: absolute; left: 0; top: 5px; width: 16px; height: 16px; border-radius: 50%; background: var(--surface); border: 3px solid var(--accent-strong); }
.timeline > li.now::before { background: var(--primary); border-color: var(--primary); }
.timeline > li.gone::before { border-color: var(--muted); }
.timeline .when { display: block; font-size: 0.8rem; font-weight: 600; color: var(--accent); letter-spacing: 0.02em; font-variant-numeric: tabular-nums; }
.timeline li.now .when { color: var(--primary); }
.timeline .what { display: block; font-weight: 600; }
.timeline .event { display: block; font-size: 0.92rem; color: var(--text-2); }
.timeline .doc { display: inline-block; margin-top: 2px; font-size: 0.8rem; color: var(--muted); }

/* Code block */
.codeblock { background: var(--code-bg); color: var(--code-text); border-radius: var(--r-lg); overflow: hidden; border: 1px solid color-mix(in srgb, var(--code-bg) 70%, var(--border)); }
.codeblock .tabs { display: flex; gap: 2px; padding: var(--s2) var(--s2) 0; border-bottom: 1px solid rgba(255,255,255,.08); overflow-x: auto; }
.codeblock .tabs button { font: inherit; font-size: 0.82rem; font-weight: 500; padding: 8px 12px; border: 0; border-radius: 6px 6px 0 0; background: transparent; color: var(--code-muted); cursor: pointer; }
.codeblock .tabs button[aria-selected="true"] { background: rgba(255,255,255,.07); color: var(--code-text); }
.codeblock .head { display: flex; align-items: center; justify-content: space-between; gap: var(--s3); padding: 8px 12px; border-bottom: 1px solid rgba(255,255,255,.08); font-size: 0.8rem; color: var(--code-muted); }
.codeblock pre { margin: 0; padding: var(--s4); overflow-x: auto; font-size: 0.86rem; line-height: 1.6; tab-size: 2; }
.codeblock .copy { font: inherit; font-size: 0.78rem; padding: 4px 10px; border-radius: 6px; border: 1px solid rgba(255,255,255,.16); background: transparent; color: var(--code-text); cursor: pointer; }
.codeblock .copy:hover { background: rgba(255,255,255,.08); }
.tok-k { color: var(--code-key); } .tok-s { color: var(--code-str); } .tok-c { color: var(--code-muted); }

/* Breadcrumb */
.breadcrumb { font-size: 0.87rem; color: var(--muted); margin: var(--s5) 0 var(--s4); }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 4px; margin: 0; padding: 0; }
.breadcrumb li + li::before { content: "›"; margin-right: 4px; color: var(--border-strong); }
.breadcrumb a { color: var(--muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--primary); text-decoration: underline; }

/* Table (becomes cards on narrow screens) */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--r-lg); background: var(--surface); }
.table { width: 100%; border-collapse: collapse; font-size: 0.93rem; }
.table th, .table td { text-align: left; padding: 10px var(--s4); border-bottom: 1px solid var(--border); vertical-align: top; }
.table th { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); font-weight: 600; background: var(--surface-2); position: sticky; top: 0; }
.table tr:last-child td { border-bottom: 0; }
.table td.num, .table th.num { text-align: right; font-variant-numeric: tabular-nums; }
@media (max-width: 639px) {
  .table-cards thead { display: none; }
  .table-cards, .table-cards tbody, .table-cards tr, .table-cards td { display: block; width: 100%; }
  .table-cards tr { padding: var(--s3) var(--s4); border-bottom: 1px solid var(--border); }
  .table-cards td { border: 0; padding: 2px 0; }
  .table-cards td[data-label]::before { content: attr(data-label) ": "; color: var(--muted); font-size: 0.82rem; }
}

/* Upload zone + progress */
.upload-zone { display: grid; place-items: center; gap: var(--s2); text-align: center; padding: var(--s7) var(--s5); border: 2px dashed var(--border-strong); border-radius: var(--r-lg); background: var(--surface); cursor: pointer; transition: border-color .15s, background .15s; }
.upload-zone:hover, .upload-zone.drag { border-color: var(--primary); background: var(--primary-soft); }
.upload-zone input[type="file"] { position: absolute; width: 1px; height: 1px; opacity: 0; }
.upload-zone .title { font-weight: 600; font-size: 1.05rem; }
.upload-zone .hint { color: var(--muted); font-size: 0.9rem; }
.progress { height: 8px; border-radius: var(--r-full); background: var(--surface-2); overflow: hidden; border: 1px solid var(--border); }
.progress > span { display: block; height: 100%; background: var(--primary); width: 0; transition: width .3s; }
.steps { display: grid; gap: var(--s3); grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr)); counter-reset: step; }
.step { position: relative; padding: var(--s4); padding-left: calc(var(--s4) + 36px); border: 1px solid var(--border); border-radius: var(--r-lg); background: var(--surface); counter-increment: step; }
.step::before { content: counter(step); position: absolute; left: var(--s4); top: var(--s4); width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center; font-size: 0.85rem; font-weight: 700; background: var(--primary-soft); color: var(--primary); }
.step.active { border-color: var(--primary); }
.step.done::before { content: "✓"; background: var(--primary); color: var(--primary-ink); }
.step h3 { font-size: 0.98rem; margin: 0 0 2px; }
.step p { margin: 0; font-size: 0.88rem; color: var(--muted); }

/* States */
.state { text-align: center; padding: var(--s7) var(--s5); border: 1px dashed var(--border-strong); border-radius: var(--r-lg); background: var(--surface); color: var(--muted); }
.state h2, .state h3 { color: var(--text); font-size: 1.15rem; }
.state .icon { width: 48px; height: 48px; margin: 0 auto var(--s3); display: grid; place-items: center; border-radius: 50%; background: var(--surface-2); color: var(--muted); }
.state.error { border-style: solid; border-color: color-mix(in srgb, var(--bad) 35%, var(--border)); background: var(--bad-soft); }
.state.error .icon { color: var(--bad); background: var(--surface); }
.skeleton { background: linear-gradient(90deg, var(--surface-2), var(--border), var(--surface-2)); background-size: 200% 100%; animation: shimmer 1.2s infinite; border-radius: var(--r-sm); min-height: 1em; }
@keyframes shimmer { to { background-position: -200% 0; } }
.notice { display: flex; gap: var(--s3); padding: var(--s3) var(--s4); border-radius: var(--r); font-size: 0.93rem; border: 1px solid; }
.notice-history { background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent-strong) 35%, transparent); color: var(--text); }
.notice-info { background: var(--info-soft); border-color: color-mix(in srgb, var(--info) 30%, transparent); }
.notice-warn { background: var(--warn-soft); border-color: color-mix(in srgb, var(--warn) 30%, transparent); }
.notice-bad { background: var(--bad-soft); border-color: color-mix(in srgb, var(--bad) 30%, transparent); }

/* Toast (copy feedback) */
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%) translateY(20px); opacity: 0; z-index: 90; padding: 10px 16px; border-radius: var(--r); background: var(--text); color: var(--bg); font-size: 0.9rem; font-weight: 500; pointer-events: none; transition: opacity .2s, transform .2s; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* 6. Page sections ---------------------------------------------------------- */
.page-head { padding: var(--s6) 0 var(--s5); }
.page-head .lead { color: var(--muted); font-size: 1.08rem; max-width: 70ch; }
/* Homepage. Compact rhythm: sections are 24px + 24px apart (48px between
   blocks), separated by a hairline instead of full-width colour bands. */
.hero { padding: var(--s5) 0 20px; }
@media (min-width: 720px) { .hero { padding: var(--s6) 0 20px; } }
.hero h1 { font-size: clamp(2.25rem, 1.75rem + 2vw, 3.25rem); letter-spacing: -0.03em; line-height: 1.1; margin-bottom: var(--s3); }
.hero .lead { font-size: clamp(1rem, 0.96rem + 0.2vw, 1.08rem); color: var(--text-2); margin-bottom: var(--s5); max-width: 60ch; }
.hero .searchbox, .hero .chips, .hero .quick-actions, .hero .recent { max-width: 760px; }
.home .section + .section { border-top: 1px solid var(--border); }
.home > .section:last-child { padding-bottom: 0; }
.home #ket-qua:has(#result:empty) { display: none; }

/* AI accent: only eyebrow labels, the command-bar glyph and processing marks */
.eyebrow.ai { color: var(--ai); display: inline-flex; align-items: center; gap: 6px; }
.ai-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--ai); box-shadow: 0 0 0 3px var(--ai-soft); }
.searchbox.cmd .glyph { display: block; color: var(--ai); margin-left: var(--s2); }
.searchbox.cmd:focus-within { border-color: var(--ai); box-shadow: 0 0 0 4px var(--ai-soft); }
.searchbox.cmd .btn { min-height: 44px; }
/* the command bar stays one row on phones: glyph, input, button */
@media (max-width: 479px) {
  .searchbox.cmd { flex-direction: row; }
  .searchbox.cmd .btn { width: auto; padding: 0 var(--s3); }
  .searchbox.cmd .glyph { margin-left: 4px; }
  .hero .chips { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; margin-inline: calc(-1 * var(--s4)); padding-inline: var(--s4); }
  .hero .chips::-webkit-scrollbar { display: none; }
  .hero .chips > * { flex: none; }
}

/* Quick actions: compact pills, one row; horizontal scroll on mobile */
.qa { border-radius: var(--r-full); min-height: 34px; padding: 0 var(--s3); font-size: 0.88rem; background: var(--surface); gap: 6px; }
.qa.is-soon { color: var(--muted); background: transparent; border-style: dashed; cursor: default; }
.qa.is-soon svg { color: var(--muted); }
.qa.is-soon:hover { background: transparent; border-color: var(--border); color: var(--muted); }
.qa small { font-size: 0.7rem; font-weight: 600; letter-spacing: 0.02em; color: var(--muted); padding-left: 2px; }
[hidden] { display: none !important; }
.recent { display: flex; flex-wrap: wrap; align-items: center; gap: var(--s2); margin-top: var(--s3); font-size: 0.85rem; }
.recent .chips { margin: 0; }

/* Shared "key" micro-label (INPUT / CURRENT) */
.k { display: flex; align-items: center; gap: var(--s2); font-size: 0.7rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin-bottom: 4px; }

/* AI Address Intelligence: input -> processing steps -> current address */
.stages { list-style: none; margin: 0 0 var(--s2); padding: 0; display: flex; flex-wrap: wrap; gap: 4px; font-family: var(--mono); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; }
.stages li { display: inline-flex; align-items: center; gap: 4px; padding: 3px 8px; border-radius: var(--r-full); background: var(--ai-soft); color: var(--ai); }
.stages li + li::before { content: "→"; margin-right: 4px; color: var(--muted); }
.stages li.hist { background: var(--accent-soft); color: var(--accent); }
.stages li.now { background: var(--primary-soft); color: var(--primary); }
.stg { display: inline-block; min-width: 4.6em; margin-right: 6px; font-family: var(--mono); font-size: 0.66rem; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; color: var(--ai); }
.pipe-steps li.hist .stg { color: var(--accent); }
.pipe-steps li.cur .stg { color: var(--primary); }
@media (max-width: 599px) { .stg { display: none; } }
.trust > summary { font-size: 0.9rem; color: var(--text-2); }
.biz-strip { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--s2) var(--s4); margin-top: var(--s3); padding: var(--s3) var(--s4); border: 1px dashed var(--border-strong); border-radius: var(--r-lg); font-size: 0.9rem; color: var(--text-2); }
.biz-strip > span { display: inline-flex; align-items: center; gap: var(--s2); }
.biz-strip svg { color: var(--primary); }
.biz-strip .links { gap: var(--s4); font-weight: 600; }
.pipe-list { display: grid; gap: var(--s2); }
.pipe { display: grid; gap: var(--s3); padding: var(--s3) var(--s4); background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); color: var(--text); text-decoration: none; }
.pipe:hover { border-color: var(--primary); color: var(--text); }
@media (min-width: 900px) { .pipe { grid-template-columns: minmax(0, 0.75fr) minmax(0, 1.75fr) minmax(0, 1fr); align-items: center; gap: var(--s5); } }
.pipe-in code { display: block; background: var(--surface-2); border: 1px dashed var(--border-strong); padding: 6px 10px; border-radius: var(--r-sm); color: var(--text-2); font-size: 0.86rem; word-break: break-word; }
.pipe-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; font-size: 0.82rem; }
/* one line per step: label, then the real detail, truncated (full text in title) */
.pipe-steps li { display: grid; grid-template-columns: 14px 14.5rem minmax(0, 1fr); align-items: center; gap: 6px; color: var(--text-2); line-height: 1.5; }
.pipe-steps svg { color: var(--ok); }
.pipe-steps li.hist svg { color: var(--accent-strong); }
.pipe-steps em { font-style: normal; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
/* phones: steps collapse to short inline marks; only the history finding keeps its text */
@media (max-width: 599px) {
  .pipe-steps { display: flex; flex-wrap: wrap; gap: 2px var(--s3); }
  .pipe-steps li { display: inline-flex; gap: 4px; }
  .pipe-steps .xl, .pipe-steps em { display: none; }
  .pipe-steps li.hist em { display: block; flex-basis: 100%; }
  .pipe-steps li.hist { flex-wrap: wrap; }
}
.pipe-steps li.hist em { color: var(--accent); white-space: normal; } /* the history finding is never cut */
.pipe-out strong { display: block; font-size: 0.98rem; line-height: 1.35; }

/* Address History Engine */
.hist-grid { display: grid; gap: var(--s5); align-items: start; }
@media (min-width: 960px) { .hist-grid { grid-template-columns: 1.3fr 1fr; gap: var(--s6); } }
.hist-grid h2 { margin-bottom: var(--s2); }
.hist-grid > div > p { font-size: 0.95rem; margin-bottom: var(--s4); }
.era-line { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; border-top: 1px solid var(--border); }
.era-line li { display: grid; grid-template-columns: 7.5rem 1fr; gap: var(--s3); padding: 7px 0; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
.era-line .when { font-weight: 600; color: var(--accent); font-variant-numeric: tabular-nums; }
.era-line li.now .when { color: var(--primary); }
.era-line .what { color: var(--text-2); }
.era-line li.now .what { color: var(--text); font-weight: 500; }
@media (max-width: 479px) { .era-line li { grid-template-columns: 1fr; gap: 0; } }
.intel { display: grid; gap: var(--s3); padding: var(--s4); background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); font-size: 0.9rem; }
.intel code { font-size: 0.85rem; }
.intel-current { display: grid; gap: 1px; padding-top: var(--s3); border-top: 1px solid var(--border); }
.intel-current strong { font-size: 1.2rem; line-height: 1.3; }
.status-live { display: inline-flex; align-items: center; gap: 6px; margin-top: 4px; font-size: 0.8rem; font-weight: 600; color: var(--ok); }
.status-live .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 3px var(--ok-soft); }
.intel-metrics { display: flex; gap: var(--s5); margin: 0; }
.intel-metrics div { display: flex; align-items: baseline; gap: 6px; }
.intel-metrics dt { font-size: 1.35rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.intel-metrics dd { margin: 0; color: var(--muted); font-size: 0.82rem; }
.intel-trace { list-style: none; margin: 0; padding: 0 0 0 var(--s4); border-left: 2px solid color-mix(in srgb, var(--accent-strong) 45%, var(--border)); display: grid; gap: var(--s2); font-size: 0.84rem; }
.intel-trace li { position: relative; display: grid; }
.intel-trace li::before { content: ""; position: absolute; left: calc(-1 * var(--s4) - 6px); top: 5px; width: 10px; height: 10px; border-radius: 50%; background: var(--surface); border: 2px solid var(--accent-strong); }
.intel-trace li.now::before { background: var(--primary); border-color: var(--primary); }
.intel-trace .when { font-size: 0.75rem; font-weight: 600; color: var(--accent); }
.intel-trace li.now .when { color: var(--primary); }
.intel-trace .event { color: var(--muted); }
.intel-link { font-weight: 600; font-size: 0.88rem; text-decoration: none; }
@media (max-width: 599px) { .intel-trace, .intel > .intel-row { display: none; } .intel-current { border-top: 0; padding-top: 0; } }

/* Use cases: six compact rows, no floating cards */
.usecases { display: grid; gap: var(--s4) var(--s5); }
@media (min-width: 600px) { .usecases { grid-template-columns: 1fr 1fr; } }
@media (min-width: 960px) { .usecases { grid-template-columns: repeat(3, 1fr); } }
.usecase { display: flex; gap: var(--s3); align-items: flex-start; }
.uc-icon { flex: none; width: 34px; height: 34px; display: grid; place-items: center; border-radius: var(--r); background: var(--primary-soft); color: var(--primary); }
.usecase h3 { display: flex; flex-wrap: wrap; align-items: center; gap: var(--s2); font-size: 0.97rem; margin: 2px 0 2px; }
.usecase p { margin: 0 0 4px; font-size: 0.88rem; color: var(--muted); line-height: 1.5; }
.usecase a { font-size: 0.86rem; font-weight: 600; text-decoration: none; }

/* Dataset: one statistics strip */
.section-head.row { max-width: none; display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: var(--s2) var(--s5); }
.section-head.row h2 { margin-bottom: 0; font-size: clamp(1.25rem, 1.15rem + 0.4vw, 1.5rem); }
#du-lieu .section-head { margin-bottom: var(--s3); }
.section-head.row p { margin: 0; font-size: 0.88rem; }
.statbar { display: grid; grid-template-columns: repeat(2, 1fr); margin: 0; background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); overflow: hidden; }
@media (min-width: 800px) { .statbar { grid-template-columns: repeat(5, 1fr); } }
.statbar > div { padding: 10px var(--s4); border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); margin-bottom: -1px; }
.statbar > div:last-child { border-right: 0; }
.statbar dt { font-size: clamp(1.5rem, 1.3rem + 0.6vw, 1.875rem); font-weight: 700; letter-spacing: -0.02em; line-height: 1.2; font-variant-numeric: tabular-nums; }
.statbar .history dt { color: var(--accent); }
.statbar dd { margin: 2px 0 0; font-size: 0.78rem; color: var(--muted); line-height: 1.35; }
.dataset-meta { margin-top: var(--s3); font-size: 0.85rem; color: var(--muted); }
.dataset-meta > summary { cursor: pointer; list-style: none; display: flex; flex-wrap: wrap; align-items: center; gap: 0 var(--s2); }
.dataset-meta > summary::-webkit-details-marker { display: none; }
.dataset-meta .linkish { color: var(--primary); font-weight: 600; text-decoration: underline; text-underline-offset: 2px; }
.dataset-meta .sep { color: var(--border-strong); }
.dataset-meta .list-check { margin-top: var(--s3); color: var(--text-2); }

/* Power your data */
.power { display: grid; gap: var(--s3); }
@media (min-width: 800px) { .power { grid-template-columns: 1fr 1fr; } }
.power-card { padding: var(--s4); background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); }
.power-card.dev { border-top: 2px solid var(--ai); }
.power-head { display: flex; align-items: center; gap: var(--s2); margin-bottom: var(--s2); color: var(--primary); }
.power-card.dev .power-head { color: var(--ai); }
.power-head h3 { margin: 0; color: var(--text); font-size: 1rem; }
.power-head .badge { margin-left: auto; }
.power-card p { font-size: 0.9rem; color: var(--muted); margin-bottom: var(--s3); }
.power-card p:last-child { margin-bottom: 0; }

/* Result card */
.result { margin-top: var(--s2); }
.result-head { display: flex; flex-wrap: wrap; gap: var(--s2); }
.result.card { padding: var(--s4) var(--s5); }
.result-input { display: flex; flex-wrap: wrap; align-items: baseline; gap: var(--s2); margin: var(--s3) 0 0; font-size: 0.88rem; }
.result-input .k { margin: 0; }
.result-input code { color: var(--text-2); word-break: break-word; }
.units .hist dd { color: var(--text-2); }
.units .hist .arrow { color: var(--accent-strong); font-weight: 700; padding: 0 2px; }
.result-label { margin: var(--s3) 0 2px; font-size: 0.7rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.result-address { font-size: clamp(1.2rem, 1.05rem + 0.6vw, 1.5rem); word-break: break-word; margin-bottom: var(--s3); }
.result-actions { margin-bottom: var(--s3); }
.ai-note { margin: var(--s3) 0 0; font-size: 0.92rem; color: var(--text-2); }
.units { display: grid; gap: 0; margin: 0; border-top: 1px solid var(--border); }
.units > div { display: grid; grid-template-columns: 10rem 1fr; gap: var(--s3); padding: 7px 0; border-bottom: 1px solid var(--border); font-size: 0.94rem; }
.units dt { color: var(--muted); font-size: 0.92rem; }
.units dd { margin: 0; }
@media (max-width: 559px) { .units > div { grid-template-columns: 1fr; gap: 2px; } }
.result .disclosure { margin-top: var(--s3); }
.result .disclosure.history > summary { color: var(--accent); }
.merged-list { margin: 0; padding-left: 18px; display: grid; gap: 4px; }
.candidates { list-style: none; padding: 0; margin: var(--s4) 0 0; display: grid; gap: var(--s2); }
.candidates a { display: grid; gap: 2px; padding: var(--s3) var(--s4); border: 1px solid var(--border); border-radius: var(--r); color: var(--text); text-decoration: none; background: var(--surface); }
.candidates a:hover { border-color: var(--primary); }
.candidates small { color: var(--muted); }
.upsell { margin: var(--s5) 0 0; padding-top: var(--s4); border-top: 1px solid var(--border); font-size: 0.9rem; color: var(--muted); }

/* Data lists */
.unit-grid { list-style: none; margin: var(--s3) 0 0; padding: 0; display: grid; gap: 2px var(--s4); grid-template-columns: repeat(auto-fill, minmax(min(100%, 210px), 1fr)); }
.unit-grid a { display: block; padding: 6px 0; color: var(--text); text-decoration: none; border-bottom: 1px dashed transparent; }
.unit-grid a:hover { color: var(--primary); }
.province-grid { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--s3); grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr)); }
.province-card { display: grid; gap: 2px; padding: var(--s4); background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); text-decoration: none; color: var(--text); }
.province-card:hover { border-color: var(--primary); color: var(--text); box-shadow: var(--shadow); }
.province-card .name { font-weight: 600; }
.province-card .meta { font-size: 0.85rem; color: var(--muted); }
.h2 { font-size: clamp(1.5rem, 1.25rem + 0.8vw, 1.875rem); letter-spacing: -0.02em; }
.h3 { font-size: 1.1rem; font-weight: 600; }

/* Tools: directory + tool pages ---------------------------------------------- */
.page-head h1 { font-size: clamp(1.75rem, 1.45rem + 1.2vw, 2.5rem); letter-spacing: -0.02em; }
.tool-dir { display: grid; gap: var(--s6); }
.tool-group-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: var(--s1) var(--s4); margin-bottom: var(--s3); }
.tool-group-head h2 { font-size: 1.2rem; margin: 0; }
.tool-group-head p { margin: 0; color: var(--muted); font-size: 0.9rem; }
.tool-grid { display: grid; gap: var(--s2); grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr)); }
.tool-item { display: flex; gap: var(--s3); align-items: flex-start; padding: var(--s3) var(--s4); background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); color: var(--text); text-decoration: none; }
a.tool-item:hover { border-color: var(--primary); color: var(--text); }
.tool-item.is-soon { background: transparent; border-style: dashed; color: var(--muted); }
.ti-icon { flex: none; width: 32px; height: 32px; display: grid; place-items: center; border-radius: var(--r); background: var(--primary-soft); color: var(--primary); }
.tool-item.history .ti-icon { background: var(--accent-soft); color: var(--accent); }
.tool-item.is-soon .ti-icon { background: var(--surface-2); color: var(--muted); }
.ti-body { display: grid; gap: 2px; min-width: 0; }
.ti-title { font-weight: 600; font-size: 0.97rem; }
.ti-sum { font-size: 0.86rem; color: var(--muted); line-height: 1.45; }
.tool-head { padding-bottom: var(--s4); }
.tool-head .lead { max-width: 70ch; }
.tool-form { display: grid; gap: var(--s3); max-width: 760px; align-items: end; }
@media (min-width: 640px) { .tool-form { grid-template-columns: 1fr auto; } .tool-form.two { grid-template-columns: 1fr 1fr auto; } .tool-form.two .btn { grid-column: auto; } }
.tool-form .field { display: grid; gap: 4px; }
.field-label { font-size: 0.8rem; font-weight: 600; color: var(--text-2); }
.tool-form .btn { min-height: 44px; }
.tool-head .chips { max-width: 760px; }
#ket-qua:has(.result), #ket-qua:has(.notice) { margin-bottom: var(--s5); }
.tool-foot { border-top: 1px solid var(--border); padding-top: var(--s5); }
.tool-foot-grid { display: grid; gap: var(--s5); grid-template-columns: minmax(0, 1fr); }
@media (min-width: 900px) { .tool-foot-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); } }
.how { margin: 0; padding-left: 20px; display: grid; gap: 4px; font-size: 0.92rem; color: var(--text-2); }
.related { display: flex; flex-wrap: wrap; align-items: center; gap: var(--s2); margin-top: var(--s5); }
.verdict { display: flex; gap: var(--s3); align-items: flex-start; padding: var(--s3) var(--s4); border-radius: var(--r); border: 1px solid; }
.verdict > div { display: grid; gap: 2px; }
.verdict span { font-size: 0.92rem; color: var(--text-2); }
.verdict.ok { background: var(--ok-soft); border-color: color-mix(in srgb, var(--ok) 35%, transparent); color: var(--ok); }
.verdict.warn { background: var(--warn-soft); border-color: color-mix(in srgb, var(--warn) 35%, transparent); color: var(--warn); }
.verdict.bad { background: var(--bad-soft); border-color: color-mix(in srgb, var(--bad) 35%, transparent); color: var(--bad); }
.verdict strong { color: var(--text); }
.issues { list-style: none; margin: 0 0 var(--s3); padding: 0; display: grid; gap: var(--s2); }
.issues li { display: grid; grid-template-columns: auto 1fr; gap: var(--s3); align-items: baseline; font-size: 0.92rem; }
.issues code { font-size: 0.75rem; }
.issues li.bad code { color: var(--bad); }
.issues li.warn code { color: var(--warn); }
.issues li.hist code { color: var(--accent); }
.components td:first-child { color: var(--muted); width: 12rem; }

/* Bulk Excel / CSV */
.stepper { list-style: none; margin: var(--s4) 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: var(--s2) var(--s4); font-size: 0.86rem; color: var(--muted); }
.stepper li { display: inline-flex; align-items: center; gap: 6px; }
.stepper .n { width: 22px; height: 22px; display: grid; place-items: center; border-radius: 50%; border: 1px solid var(--border-strong); font-size: 0.75rem; font-weight: 700; }
.stepper li.current { color: var(--text); font-weight: 600; }
.stepper li.current .n { background: var(--primary); border-color: var(--primary); color: var(--primary-ink); }
.stepper li.done .n { background: var(--primary-soft); border-color: var(--primary-soft); color: var(--primary); }
.bulk { display: grid; gap: var(--s4); grid-template-columns: minmax(0, 1fr); }
.bulk .upload { display: grid; gap: var(--s4); max-width: 760px; min-width: 0; }
.bulk .upload-zone { min-width: 0; }
.bulk .btn-row { flex-wrap: wrap; }
.bulk .upload-zone { padding: var(--s6) var(--s5); cursor: pointer; }
.bulk .upload-zone input[type="file"] { position: static; width: auto; height: auto; opacity: 1; max-width: 100%; font: inherit; font-size: 0.9rem; }
.bulk-info { display: grid; gap: var(--s5); max-width: 980px; }
@media (min-width: 800px) { .bulk-info { grid-template-columns: 1fr 1fr; } }
.legend { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; font-size: 0.88rem; color: var(--text-2); }
.table th.hl, .table td.hl { background: var(--primary-soft); }
.bulk-stats .ok dt { color: var(--ok); }
.bulk-stats .warn dt { color: var(--warn); }
.bulk-stats .bad dt { color: var(--bad); }
.results td.note { font-size: 0.84rem; color: var(--muted); }
.results tr.s-review td:first-child { box-shadow: inset 3px 0 0 var(--warn); }
.results tr.s-not_found td:first-child { box-shadow: inset 3px 0 0 var(--bad); }

/* API: overview, docs, playground */
.m { display: inline-block; min-width: 3.1em; padding: 1px 6px; border-radius: 4px; font-family: var(--mono); font-size: 0.72rem; font-weight: 700; text-align: center; }
.m-post { background: var(--ai-soft); color: var(--ai); }
.m-get { background: var(--ok-soft); color: var(--ok); }
.api-grid { display: grid; gap: var(--s5); grid-template-columns: minmax(0, 1fr); }
@media (min-width: 960px) { .api-grid { grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); } }
.codeblock pre.scroll { max-height: 420px; overflow: auto; }
.mt-3 { margin-top: var(--s3); }
.docs { display: grid; gap: var(--s5); grid-template-columns: minmax(0, 1fr); }
@media (min-width: 960px) { .docs { grid-template-columns: 220px minmax(0, 1fr); } .docs-nav { position: sticky; top: calc(var(--header-h) + 16px); align-self: start; } }
.docs-nav { display: flex; flex-wrap: wrap; gap: 4px; font-size: 0.88rem; }
@media (min-width: 960px) { .docs-nav { flex-direction: column; } }
.docs-nav a { padding: 4px 8px; border-radius: var(--r-sm); color: var(--text-2); text-decoration: none; }
.docs-nav a:hover { background: var(--surface-2); color: var(--text); }
.docs-body > section { padding-bottom: var(--s5); margin-bottom: var(--s5); border-bottom: 1px solid var(--border); }
.docs-body h2 { font-size: 1.3rem; display: flex; flex-wrap: wrap; align-items: center; gap: var(--s2); }
.docs-body h2 code { font-size: 1rem; }
.pg-endpoints { display: flex; gap: var(--s2); overflow-x: auto; padding-bottom: 2px; margin-bottom: var(--s4); }
.pg-endpoints a { flex: none; display: inline-flex; align-items: center; gap: 6px; padding: 6px 10px; border: 1px solid var(--border); border-radius: var(--r-full); background: var(--surface); color: var(--text-2); text-decoration: none; font-size: 0.88rem; }
.pg-endpoints a[aria-current] { border-color: var(--ai); color: var(--text); box-shadow: 0 0 0 3px var(--ai-soft); }
.pg-grid { display: grid; gap: var(--s4); }
@media (min-width: 960px) { .pg-grid { grid-template-columns: 1fr 1fr; } }
.pg-panel { display: grid; gap: var(--s2); align-content: start; padding: var(--s4); background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); min-width: 0; }
.pg-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--s2); font-size: 0.8rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }
.pg-head code { text-transform: none; letter-spacing: 0; }
.pg-status { text-transform: none; letter-spacing: 0; font-family: var(--mono); }
.pg-status.ok { color: var(--ok); }
.pg-status.bad { color: var(--bad); }
.pg-out { margin: 0; max-height: 460px; padding: var(--s3); background: var(--code-bg); color: var(--code-text); border-radius: var(--r); font-size: 0.82rem; overflow: auto; }
.pg-code { margin-top: var(--s4); }
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin-bottom: var(--s2); overflow-x: auto; }
.tabs button { padding: 8px 14px; border: 0; border-bottom: 2px solid transparent; background: none; font: inherit; font-size: 0.9rem; color: var(--muted); cursor: pointer; }
.tabs button[aria-selected="true"] { color: var(--text); border-bottom-color: var(--ai); font-weight: 600; }

/* Business, pricing */
.biz-grid { display: grid; gap: var(--s3); }
@media (min-width: 800px) { .biz-grid { grid-template-columns: 1fr 1fr; } }
.biz-card { display: grid; gap: var(--s2); align-content: start; padding: var(--s4) var(--s5); background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); color: var(--primary); }
.biz-card.hist { color: var(--accent); }
.biz-card h2 { color: var(--text); margin: 0; display: flex; flex-wrap: wrap; align-items: center; gap: var(--s2); }
.biz-card p { color: var(--text-2); font-size: 0.93rem; margin: 0; }
.biz-card a { font-weight: 600; font-size: 0.9rem; text-decoration: none; }
.biz-cta { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--s4); }
.plans { display: grid; gap: var(--s3); grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); }
.plan { display: grid; gap: var(--s3); align-content: start; padding: var(--s5); background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); }
.plan.current { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.plan-head { display: flex; align-items: center; justify-content: space-between; gap: var(--s2); }
.plan-head h2 { font-size: 1.15rem; margin: 0; }
.plan .price { font-size: 1.5rem; font-weight: 700; margin: 0; }
.plan .price.muted { font-size: 1.05rem; font-weight: 600; }
.plan .btn { justify-self: start; }

/* Data pages */
.data-grid { display: grid; gap: var(--s2); grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); }
.found { display: grid; gap: 6px; }
.year-nav { display: flex; flex-wrap: wrap; gap: var(--s4); font-size: 0.92rem; }
.changes h2 { margin-top: var(--s4); }
.mb-4 { margin-bottom: var(--s4); }

/* Commercial: pricing, contact, checkout, order, legal */
.answers { list-style: none; margin: var(--s3) 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: var(--s2) var(--s5); font-size: 0.9rem; color: var(--text-2); }
.plan-cta { display: flex; flex-wrap: wrap; gap: var(--s2); margin-top: auto; }
.plan { align-content: stretch; grid-template-rows: auto auto auto 1fr auto; }
.plan .price small { font-size: 0.85rem; font-weight: 500; color: var(--muted); }
.pricing-grid { display: grid; gap: var(--s5); grid-template-columns: minmax(0, 1fr); }
@media (min-width: 900px) { .pricing-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } }
.channels { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--s2); font-size: 0.92rem; }
.channels li { display: grid; grid-template-columns: auto 1fr; gap: var(--s3); align-items: baseline; }
.faq { display: grid; gap: var(--s2); max-width: 860px; }
.contact-grid, .checkout-grid { display: grid; gap: var(--s4); grid-template-columns: minmax(0, 1fr); }
@media (min-width: 900px) { .contact-grid, .checkout-grid { grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); align-items: start; } }
.contact-form, .checkout-form { display: grid; gap: var(--s3); }
.form-row { display: grid; gap: var(--s3); }
@media (min-width: 600px) { .form-row { grid-template-columns: 1fr 1fr; } }
.field { display: grid; gap: 4px; }
.field-error { color: var(--bad); font-size: 0.82rem; }
.textarea.plain { font-family: var(--font); font-size: 0.95rem; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.side-links { display: grid; gap: 6px; }
.narrow { max-width: 760px; }
.request-id code { font-size: 1.2rem; padding: 4px 10px; }
.methods { display: grid; gap: var(--s2); }
.method { display: flex; align-items: center; gap: var(--s2); padding: var(--s3) var(--s4); border: 1px solid var(--border); border-radius: var(--r); background: var(--surface); }
.method.is-off { color: var(--muted); border-style: dashed; background: transparent; }
.check { display: flex; gap: var(--s2); align-items: flex-start; font-size: 0.92rem; }
.api-key .codeblock code { word-break: break-all; white-space: pre-wrap; }
.api-key .codeblock .head .btn-row { gap: var(--s2); }
.keep-link { padding: var(--s3) var(--s4); border: 1px dashed var(--border-strong); border-radius: var(--r); }
.keep-link h3 { margin: 0 0 4px; font-size: 0.98rem; }
.keep-link p { margin: 0 0 var(--s2); color: var(--text-2); }
.link-box { display: block; padding: 6px 10px; font-size: 0.8rem; word-break: break-all; }
.mini-steps { list-style: none; margin: 0 0 var(--s2); padding: 0; display: flex; flex-wrap: wrap; gap: 4px; font-family: var(--mono); font-size: 0.7rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); }
.mini-steps li + li::before { content: "→"; margin-right: 4px; }
.prose { max-width: 820px; }
.prose h2 { font-size: 1.15rem; margin-top: var(--s5); }
.prose p, .prose li { color: var(--text-2); }

/* 7. Utilities ---------------------------------------------------------------- */
.mb-2 { margin-bottom: var(--s2); }
.small { font-size: 0.86rem; }
.mt-2 { margin-top: var(--s2); }
.mono { font-family: var(--mono); font-size: 0.88em; }
.muted { color: var(--muted); }
.center { text-align: center; }
.mt-0 { margin-top: 0; } .mt-4 { margin-top: var(--s4); } .mt-5 { margin-top: var(--s5); } .mt-6 { margin-top: var(--s6); }
.mb-0 { margin-bottom: 0; } .mb-4 { margin-bottom: var(--s4); }
.nowrap { white-space: nowrap; }
.list-plain { list-style: none; padding: 0; margin: 0; }
.list-check { list-style: none; padding: 0; margin: 0; display: grid; gap: var(--s2); }
.list-check li { position: relative; padding-left: 26px; }
.list-check li::before { content: ""; position: absolute; left: 2px; top: 7px; width: 12px; height: 7px; border-left: 2px solid var(--primary); border-bottom: 2px solid var(--primary); transform: rotate(-45deg); }