/* ── Self-hosted typefaces ───────────────────────────────────
   Served from this origin so no visitor request reaches Google. One
   variable file per subset covers every weight. Licences: OFL-1.1,
   see assets/fonts/.
   ─────────────────────────────────────────────────────────── */
@font-face{
  font-family:"Inter";
  font-style:normal;
  font-weight:400 700;
  font-display:swap;
  src:url("assets/fonts/inter-latin-ext.woff2?v=1ad231aa") format("woff2");
  unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face{
  font-family:"Inter";
  font-style:normal;
  font-weight:400 700;
  font-display:swap;
  src:url("assets/fonts/inter-latin.woff2?v=260c81a4") 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;
}

/* ============================================================================
   AIDIA LAB — lab.aidia.uk
   ----------------------------------------------------------------------------
   Token block below is the AIDIA DESIGN SYSTEM core, duplicated verbatim in
   aidia-site (aidia.uk) and aidia-learn (learn.aidia.uk). CSP is
   `default-src 'self'` on each host, so one shared stylesheet across subdomains
   is not possible. CHANGE ONE, CHANGE ALL THREE.

   Light is the default. Dark is opt-in via [data-theme="dark"] on <html>, set by
   the toggle and remembered in localStorage under "aidia-theme".

   Semantic colours (verified / estimate / open question) are separate from the
   brand accent on purpose: they carry meaning, so they must not shift when the
   accent does.
   ========================================================================== */

*{box-sizing:border-box}

:root{
  color-scheme:light;
  --ground:#ffffff;
  --surface:#ffffff;
  --alt:#f3f3f6;
  --ink:#16161c;
  --ink-soft:#3c3c47;
  --muted:#5c5c6b;
  --line:#e2e2e9;
  --line-soft:#eeeef3;
  --line-strong:#c9c9d4;
  --accent:#1f4bff;
  --accent-hover:#1436cc;
  --accent-wash:#eef1ff;
  --accent-ink:#1436cc;
  --head-bg:rgba(255,255,255,.93);
  --foot-bg:#16161c;
  --foot-ink:#e6e6ee;
  --foot-muted:#9a9ab0;
  --ok:#0f7245;     --ok-bg:#e7f6ee;   --ok-line:#b6e2cc;
  --warn:#8a5a09;   --warn-bg:#fdf1dc; --warn-line:#f0d9ae;
  --gap:#6b3fc4;    --gap-bg:#f1ecfd;  --gap-line:#dbcdf7;
  --shadow:0 1px 2px rgba(22,22,28,.05),0 10px 30px rgba(22,22,28,.08);
  --shadow-lift:0 2px 6px rgba(22,22,28,.07),0 18px 44px rgba(22,22,28,.13);
  --maxw:1100px;
  --display:"Inter",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}

:root[data-theme="dark"]{
  color-scheme:dark;
  --ground:#0e1117;
  --surface:#161b23;
  --alt:#141920;
  --ink:#e9ecf2;
  --ink-soft:#c3c9d4;
  --muted:#9aa3b2;
  --line:#252c37;
  --line-soft:#1d232c;
  --line-strong:#39424f;
  --accent:#7c9bff;
  --accent-hover:#a3b9ff;
  --accent-wash:#1a2340;
  --accent-ink:#c3d2ff;
  --head-bg:rgba(14,17,23,.92);
  --foot-bg:#080b11;
  --foot-ink:#e2e6ee;
  --foot-muted:#8891a1;
  --ok:#5fdcae;     --ok-bg:rgba(52,211,153,.13);   --ok-line:rgba(52,211,153,.32);
  --warn:#e8b45c;   --warn-bg:rgba(240,180,41,.13); --warn-line:rgba(240,180,41,.3);
  --gap:#b49bff;    --gap-bg:rgba(139,107,255,.15); --gap-line:rgba(139,107,255,.34);
  --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 30px rgba(0,0,0,.34);
  --shadow-lift:0 2px 6px rgba(0,0,0,.45),0 18px 44px rgba(0,0,0,.46);
}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--ground);color:var(--ink);
  font-family:var(--display);font-size:17px;line-height:1.62;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  transition:background-color .2s ease,color .2s ease;
}
::selection{background:var(--accent);color:var(--ground)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.grad-top{position:fixed;top:0;left:0;right:0;height:3px;background:var(--accent);z-index:60}

/* ---------- header ---------- */
.site-head{position:sticky;top:0;z-index:20;background:var(--head-bg);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:13px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none}
.brand:hover{text-decoration:none}
.brand img{width:40px;height:40px;border-radius:9px}
.brand-text{display:flex;flex-direction:column;justify-content:center}
.brand-name{font-weight:700;font-size:1.12rem;letter-spacing:-.03em;line-height:1.16;color:var(--ink)}
.brand-sub{font-size:.7rem;color:var(--muted);letter-spacing:.01em;line-height:1.16;margin-top:2px}
.head-right{display:flex;align-items:center;gap:10px}
.head-link{font-size:.9rem;color:var(--muted);font-weight:600;white-space:nowrap}
.head-link:hover{color:var(--ink);text-decoration:none}

.theme-btn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;
  border-radius:8px;border:1.5px solid var(--line-strong);background:none;color:var(--muted);
  cursor:pointer;padding:0;transition:color .18s,border-color .18s;flex:none}
.theme-btn:hover{color:var(--ink);border-color:var(--ink)}
.theme-btn svg{width:18px;height:18px}
.theme-btn .t-moon{display:none}
:root[data-theme="dark"] .theme-btn .t-sun{display:none}
:root[data-theme="dark"] .theme-btn .t-moon{display:block}

/* ---------- hero ---------- */
.hero{padding:84px 0 56px;border-bottom:1px solid var(--line)}
.eyebrow{font-size:.78rem;font-weight:700;letter-spacing:.02em;color:var(--accent);
  margin:0 0 20px;display:inline-flex;align-items:center;gap:9px}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--accent);flex:none}
.hero h1{font-weight:700;line-height:1.07;font-size:clamp(34px,6vw,62px);letter-spacing:-.028em;
  margin:0 0 22px;max-width:16ch;text-wrap:balance}
.hero p.lead{font-size:clamp(17px,2.2vw,21px);color:var(--muted);max-width:58ch;margin:0;line-height:1.6}
.principles{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}
.principles span{font-size:.86rem;color:var(--ink-soft);background:var(--alt);
  border:1px solid var(--line);border-radius:999px;padding:7px 15px}

/* ---------- section ---------- */
section{padding:64px 0}
.sec-label{font-size:.78rem;font-weight:700;letter-spacing:.02em;color:var(--muted);
  margin:0 0 28px;display:flex;align-items:center;gap:14px}
.sec-label::after{content:"";flex:1;height:1px;background:var(--line)}

/* ---------- project cards ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:22px}
.card{background:var(--surface);border-radius:12px;padding:28px;box-shadow:var(--shadow);
  display:flex;flex-direction:column;transition:transform .18s ease,box-shadow .18s ease}
.card.live:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift)}
.card h3{font-weight:700;font-size:23px;line-height:1.2;margin:14px 0 8px;letter-spacing:-.024em;color:var(--ink)}
.card .tag{color:var(--muted);font-size:15px;margin:0 0 18px;flex:1;line-height:1.65}
.card .mini{display:flex;flex-wrap:wrap;gap:10px 22px;margin:0 0 20px;padding-top:16px;border-top:1px solid var(--line)}
.card .mini b{display:block;font-size:20px;color:var(--accent);line-height:1.1;letter-spacing:-.02em;font-weight:700}
.card .mini small{font-size:11.5px;color:var(--muted)}
.card .go{font-weight:600;font-size:.95rem;color:var(--accent)}
.card.ghost{border:1px dashed var(--line-strong);background:transparent;box-shadow:none;
  align-items:flex-start;justify-content:center;min-height:200px}
.card.ghost .gh{color:var(--muted);font-size:14.5px}
.card.ghost h3{color:var(--muted)}

/* status badge */
.badge{display:inline-flex;align-items:center;gap:7px;align-self:flex-start;
  font-size:11.5px;font-weight:700;letter-spacing:.03em;text-transform:uppercase;
  padding:5px 11px;border-radius:999px;border:1px solid}
.badge.verified{background:var(--ok-bg);color:var(--ok);border-color:var(--ok-line)}
.badge.konsep{background:var(--warn-bg);color:var(--warn);border-color:var(--warn-line)}
.badge .dot{width:7px;height:7px;border-radius:50%;background:currentColor}

/* ---------- detail / article ---------- */
.crumb{padding:26px 0 0;font-size:13.5px;color:var(--muted)}
.crumb a{color:var(--muted)}
.art-head{padding:28px 0 40px;border-bottom:1px solid var(--line)}
.art-head h1{font-weight:700;font-size:clamp(30px,5vw,50px);line-height:1.08;letter-spacing:-.028em;
  margin:18px 0 16px;max-width:20ch;text-wrap:balance}
.art-head .tagline{font-size:clamp(17px,2.2vw,20px);color:var(--muted);margin:0 0 16px;max-width:54ch}
.art-head .meta{font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px 18px}
.art-head .meta b{color:var(--ink-soft);font-weight:600}

/* label legend */
.legend{display:flex;flex-wrap:wrap;gap:10px 16px;margin:26px 0 0;font-size:12.5px;color:var(--muted)}
.legend .lg{display:inline-flex;align-items:center;gap:7px}
.lab{display:inline-flex;align-items:center;gap:6px;font-size:11px;font-weight:700;
  padding:2px 9px;border-radius:6px;border:1px solid;letter-spacing:.02em;vertical-align:middle;white-space:nowrap}
.lab.v{background:var(--ok-bg);color:var(--ok);border-color:var(--ok-line)}
.lab.e{background:var(--warn-bg);color:var(--warn);border-color:var(--warn-line)}
.lab.g{background:var(--gap-bg);color:var(--gap);border-color:var(--gap-line)}

/* big stat band */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden;margin:40px 0}
.stats .s{background:var(--surface);padding:24px 22px}
.stats .s b{display:block;font-size:clamp(24px,4vw,33px);color:var(--accent);line-height:1;
  letter-spacing:-.03em;font-weight:700;font-variant-numeric:tabular-nums}
.stats .s small{display:block;margin-top:9px;font-size:12px;color:var(--muted);line-height:1.5}

/* content blocks */
.block{padding:40px 0;border-bottom:1px solid var(--line)}
.block:last-child{border-bottom:0}
.block h2{font-weight:700;font-size:clamp(22px,3vw,29px);letter-spacing:-.026em;margin:0 0 6px;color:var(--ink)}
.block .kq{font-size:.78rem;font-weight:700;letter-spacing:.02em;color:var(--gap);margin:0 0 18px}
.block p{color:var(--muted);margin:0 0 16px;max-width:68ch}
.block p:last-child{margin-bottom:0}
.block strong{color:var(--ink);font-weight:700}
.block ul{margin:0 0 16px;padding-left:0;list-style:none;max-width:68ch}
.block li{position:relative;padding:0 0 12px 26px;color:var(--muted)}
.block li::before{content:"▸";position:absolute;left:4px;color:var(--accent)}

/* callout */
.callout{background:var(--alt);border:1px solid var(--line);border-left:3px solid var(--accent);
  border-radius:12px;padding:22px 24px;margin:22px 0;color:var(--muted)}
.callout.warn{border-left-color:var(--warn);background:var(--warn-bg)}
.callout.moat{border-left-color:var(--gap);background:var(--gap-bg)}
.callout h4{font-weight:700;font-size:18px;color:var(--ink);margin:0 0 8px}
.callout p{margin:0 0 10px}.callout p:last-child{margin:0}

/* data bars */
.bars{display:flex;flex-direction:column;gap:14px;margin:22px 0;max-width:60ch}
.bar .bl{display:flex;justify-content:space-between;font-size:13px;color:var(--muted);margin-bottom:6px}
.bar .bl b{color:var(--accent);font-weight:700;font-variant-numeric:tabular-nums}
.bar .track{height:8px;background:var(--alt);border:1px solid var(--line);border-radius:99px;overflow:hidden}
.bar .fill{height:100%;background:var(--accent);border-radius:99px}

/* sources */
.src{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.src li{font-size:13px;color:var(--muted);padding-left:22px;position:relative;word-break:break-word}
.src li::before{content:"↗";position:absolute;left:0;color:var(--gap)}
.cap{font-size:12px;color:var(--muted);margin:8px 0 0}

/* ---------- footer ---------- */
.site-foot{background:var(--foot-bg);color:var(--foot-ink);padding:52px 0;margin-top:20px}
.site-foot .fb{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.site-foot .fb img{width:38px;height:38px;border-radius:8px}
.site-foot .wm{font-weight:700;font-size:19px;letter-spacing:-.03em;color:var(--foot-ink)}
.site-foot strong{color:var(--foot-ink)}
.site-foot p{color:var(--foot-muted);font-size:14px;max-width:70ch;margin:0;line-height:1.7}
.site-foot a{color:var(--foot-ink);text-decoration:underline;text-underline-offset:3px}
.site-foot a:hover{color:#fff}

/* ---------- language toggle ---------- */
.langtog{font-size:12.5px;background:var(--alt);border:1px solid var(--line);border-radius:999px;
  padding:3px;display:inline-flex;gap:2px;cursor:pointer;user-select:none}
.langtog b{padding:4px 12px;border-radius:999px;font-weight:600;color:var(--muted);transition:.15s}
.langtog b.on{background:var(--accent);color:#fff}
/* English is the default in the markup itself: Indonesian is hidden until the
   toggle asks for it. Before this, both languages painted until the script at
   the end of <body> ran, and readers saw every paragraph twice. */
body [lang="id"]{display:none}
body.lang-id [lang="id"]{display:revert}
body.lang-en [lang="id"]{display:none !important}
body.lang-id [lang="en"]{display:none !important}

/* confidence tag */
.conf{display:inline-flex;align-items:center;gap:7px;font-size:11px;font-weight:700;letter-spacing:.05em;
  text-transform:uppercase;padding:4px 10px;border-radius:6px;border:1px solid;margin:0 0 14px}
.conf .dot{width:6px;height:6px;border-radius:50%;background:currentColor}
.conf.v{background:var(--ok-bg);color:var(--ok);border-color:var(--ok-line)}
.conf.g{background:var(--gap-bg);color:var(--gap);border-color:var(--gap-line)}

/* bottom-line + caveat */
.bottomline{font-weight:700;font-size:clamp(18px,2.3vw,22px);line-height:1.4;color:var(--ink);
  border-left:3px solid var(--accent);padding:3px 0 3px 18px;margin:0 0 18px;max-width:62ch}
.caveat{font-size:13px;line-height:1.6;color:var(--warn);background:var(--warn-bg);
  border:1px solid var(--warn-line);border-radius:8px;padding:12px 15px;margin:20px 0 0;max-width:66ch}
.caveat::before{content:"⚠  "}

/* hero verdict teaser */
.teaser{display:inline-flex;align-items:center;gap:10px;margin-top:26px;background:var(--surface);
  border:1px solid var(--line);box-shadow:var(--shadow);border-radius:999px;padding:9px 18px 9px 10px;
  font-size:15px;color:var(--ink-soft);max-width:100%}
.teaser .pill{font-size:11px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;
  color:#fff;background:var(--accent);padding:4px 10px;border-radius:999px;white-space:nowrap}
:root[data-theme="dark"] .teaser .pill{color:#0b1020}

/* question grid */
.qgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(248px,1fr));gap:14px;margin:6px 0 0}
.qgrid .q{background:var(--surface);border-radius:12px;padding:19px 20px;box-shadow:var(--shadow)}
.qgrid .q .n{font-size:12px;font-weight:700;color:var(--accent)}
.qgrid .q h4{font-weight:700;font-size:16px;margin:7px 0 5px;color:var(--ink)}
.qgrid .q p{font-size:13.5px;color:var(--muted);margin:0;line-height:1.55}

/* method flow */
.flow{display:flex;flex-wrap:wrap;align-items:stretch;gap:8px;margin:24px 0 8px}
.flow .step{flex:1 1 130px;background:var(--surface);border-radius:12px;padding:16px;box-shadow:var(--shadow)}
.flow .step .n{font-size:11px;font-weight:700;color:var(--gap)}
.flow .step b{display:block;font-weight:700;font-size:14.5px;margin:5px 0 3px;color:var(--ink);line-height:1.25}
.flow .step small{font-size:11.5px;color:var(--muted)}
.flow .arr{align-self:center;color:var(--accent);font-size:16px;flex:0 0 auto}

/* verification funnel */
.funnel{display:flex;flex-direction:column;gap:9px;margin:22px 0 8px;max-width:560px}
.funnel .fr{display:flex;align-items:center;gap:14px}
.funnel .bar2{height:40px;border-radius:8px;background:var(--accent);display:flex;align-items:center;
  padding:0 16px;color:#fff;font-weight:700;font-size:16px;flex:0 0 auto;min-width:70px;
  font-variant-numeric:tabular-nums}
:root[data-theme="dark"] .funnel .bar2{color:#0b1020}
.funnel .fr:nth-child(2) .bar2{opacity:.82}
.funnel .fr:nth-child(3) .bar2{opacity:.64}
.funnel .fr:nth-child(4) .bar2{opacity:.5}
.funnel .lbl{font-size:13px;color:var(--muted);line-height:1.5}

/* recommendation box */
.rec{background:var(--accent-wash);border:1px solid var(--line);border-radius:12px;
  padding:clamp(22px,4vw,34px);margin:6px 0 0}
.rec h3{font-weight:700;font-size:clamp(21px,3vw,27px);color:var(--ink);margin:0 0 8px;
  letter-spacing:-.026em;line-height:1.18}

/* numbered risk list */
.risks{counter-reset:r;list-style:none;padding:0;margin:18px 0 0;display:grid;gap:13px}
.risks li{counter-increment:r;position:relative;padding:16px 18px 16px 58px;background:var(--surface);
  border-radius:12px;box-shadow:var(--shadow);color:var(--muted);font-size:15px;max-width:none}
.risks li::before{content:counter(r);position:absolute;left:16px;top:15px;width:28px;height:28px;
  border-radius:50%;background:var(--warn-bg);border:1px solid var(--warn-line);color:var(--warn);
  font-size:13.5px;display:flex;align-items:center;justify-content:center;font-weight:700}
.risks li b{color:var(--ink);font-weight:700}
.risks li::marker{content:none}

@media(max-width:640px){
  .hero{padding:60px 0 40px}
  section{padding:48px 0}
  .stats{grid-template-columns:repeat(2,1fr)}
  .flow{flex-direction:column}
  .flow .arr{transform:rotate(90deg)}
  .head-link{display:none}
}