:root {
  --latar: #f4f6fa; --kartu: #ffffff; --teks: #121826; --redup: #5b6475; --garis: #e2e6ee;
  --biru: #2f7fe6; --biru-muda: #e7f0fd; --navy: #121826; --hijau: #12805c; --merah: #c23434;
  --gelembung-masuk: #ffffff; --gelembung-keluar: #dcebff;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --latar: #0d121c; --kartu: #161d2b; --teks: #e8ecf3; --redup: #97a1b3; --garis: #263043;
    --biru: #5aa2f5; --biru-muda: #1a2a44; --hijau: #4cc495; --merah: #f07272;
    --gelembung-masuk: #1c2536; --gelembung-keluar: #1d3557;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body {
  font-family: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--latar); color: var(--teks); line-height: 1.55; font-size: 15px;
}
a { color: var(--biru); }
.atas {
  display: flex; align-items: center; gap: 12px; padding: 12px 20px;
  background: var(--navy); color: #fff;
}
.atas a.merek { display: flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; font-weight: 700; letter-spacing: .2px; }
.atas img { width: 30px; height: 30px; border-radius: 7px; }
.atas nav { margin-left: auto; display: flex; gap: 16px; flex-wrap: wrap; }
.atas nav a { color: #c9d6ea; text-decoration: none; font-size: 14px; }
.atas nav a:hover { color: #fff; }
.isi { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
.kartu { background: var(--kartu); border: 1px solid var(--garis); border-radius: 14px; padding: 22px; margin: 16px 0; }
h1 { font-size: 26px; line-height: 1.25; margin: 0 0 8px; }
h2 { font-size: 18px; margin: 28px 0 8px; }
.redup { color: var(--redup); }
.tombol {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 0; border-radius: 10px; padding: 11px 18px; font: inherit; font-weight: 600;
  background: var(--biru); color: #fff; cursor: pointer; text-decoration: none;
}
.tombol:hover { filter: brightness(1.08); }
.tombol:disabled { opacity: .55; cursor: default; }
.tombol.wa { background: #1aa260; }
.tombol.garis { background: transparent; color: var(--teks); border: 1px solid var(--garis); }
input, textarea {
  font: inherit; color: var(--teks); background: var(--kartu); border: 1px solid var(--garis);
  border-radius: 10px; padding: 10px 12px; width: 100%;
}
input:focus, textarea:focus { outline: 2px solid var(--biru); outline-offset: -1px; }
.catatan { font-size: 13px; color: var(--redup); }
.kotak-info { padding: 12px 14px; border-radius: 10px; background: var(--biru-muda); font-size: 14px; }
.kotak-info.bagus { background: color-mix(in srgb, var(--hijau) 14%, transparent); }
.kotak-info.buruk { background: color-mix(in srgb, var(--merah) 14%, transparent); }
ol.langkah { padding-left: 20px; }
ol.langkah li { margin: 6px 0; }
table.daftar { width: 100%; border-collapse: collapse; font-size: 14px; }
table.daftar td, table.daftar th { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--garis); vertical-align: top; }
.kaki { text-align: center; font-size: 13px; color: var(--redup); padding: 24px 16px; }