:root{
  /* Palet warna dikurasi jadi 4 warna inti (bukan warna beda-beda tiap ikon)
     supaya kesannya konsisten & bermerek, bukan ramai. */
  --teal:#1D9E75;
  --teal-d:#157a5b;
  --biru:#185FA5;
  --biru-d:#124a7d;
  --indigo:#4E5FA0;
  --amber:#B4711A;
  --pink:#993556;

  --teks:#212a25;
  --teks-muted:#5c675f;
  --bg:#f4f7f5;
  --kartu:#ffffff;
  --garis:#e6ece8;

  --radius-sm:.6rem;
  --radius-md:.85rem;
  --radius-lg:1.1rem;

  --shadow-sm:0 1px 3px rgba(20,30,25,.06);
  --shadow-md:0 4px 16px rgba(20,30,25,.08);
  --shadow-lg:0 10px 28px rgba(20,30,25,.14);
}

*{ box-sizing:border-box; }
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);
  color:var(--teks);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
h1,h2{ font-family:inherit; }

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background:linear-gradient(160deg,var(--teal) 0%,var(--teal-d) 100%);
  color:#fff;
  padding:2.4rem 1rem 2rem;
  border-radius:0 0 22px 22px;
  text-align:center;
  overflow:hidden;
}
.hero::before{
  /* highlight radial halus di pojok, kesan lebih "dirancang" bukan gradient polos */
  content:"";
  position:absolute;
  top:-40%; right:-20%;
  width:70%; height:140%;
  background:radial-gradient(circle, rgba(255,255,255,.10) 0%, rgba(255,255,255,0) 70%);
  pointer-events:none;
}
.hero-inner{ max-width:480px; margin:0 auto; position:relative; }
.hero-inner picture{ display:block; }
.hero-icon{
  display:block;
  width:96px; height:96px;
  border-radius:24px;
  box-shadow:0 8px 22px rgba(0,0,0,.28);
  margin:0 auto 1rem;
  -webkit-touch-callout:none;
  -webkit-user-select:none;
  user-select:none;
  -webkit-user-drag:none;
}
.hero-badge{
  display:inline-block;
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.22);
  padding:.3rem .85rem;
  border-radius:999px;
  font-size:.72rem;
  font-weight:600;
  letter-spacing:.02em;
  margin-bottom:.75rem;
}
.hero h1{
  font-size:1.5rem;
  font-weight:800;
  letter-spacing:-.01em;
  margin:.1rem 0 .55rem;
}
.hero p{ font-size:.9rem; opacity:.95; margin:0 0 1.3rem; }
.hero-sistem{
  font-size:.78rem !important;
  opacity:.78 !important;
  margin:0 0 .6rem !important;
  font-style:normal;
}
.btn-download{
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  background:#fff;
  color:var(--teal-d);
  font-weight:700;
  font-size:.92rem;
  padding:.8rem 1.6rem;
  border-radius:999px;
  text-decoration:none;
  box-shadow:var(--shadow-lg);
  transition:transform .12s ease, box-shadow .12s ease;
}
.btn-download:active{ transform:scale(.97); }
.btn-download .ikon{ font-size:1.05rem; }
.btn-download.loading{
  pointer-events:none;
  opacity:.9;
  min-width:210px;
  justify-content:center;
}
.spinner{
  display:inline-block;
  width:14px; height:14px;
  border:2px solid rgba(21,122,91,.25);
  border-top-color:var(--teal-d);
  border-radius:50%;
  animation:spin .7s linear infinite;
  flex-shrink:0;
}
@keyframes spin{ to{ transform:rotate(360deg); } }
.hero-note{ font-size:.72rem; opacity:.82; margin-top:.7rem; }

.btn-wa{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  background:#20b358;
  color:#fff;
  font-weight:700;
  font-size:.86rem;
  padding:.7rem 1.4rem;
  border-radius:999px;
  text-decoration:none;
  margin-top:.5rem;
  box-shadow:0 4px 14px rgba(32,179,88,.3);
  transition:transform .12s ease;
}
.btn-wa:active{ transform:scale(.97); }
.btn-wa .ikon{ font-size:1rem; }
/* Selector lebih spesifik dari .isi a supaya tombol ini tidak ketimpa
   gaya link biasa (warna biru + garis bawah) saat dipakai di dalam .isi */
.isi a.btn-wa{ color:#fff; text-decoration:none; font-weight:700; }

/* ---------- Layout ---------- */
.wrap{ max-width:640px; margin:0 auto; padding:1.3rem 1rem 2.5rem; }

/* ---------- Menu grid ---------- */
.menu-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:.6rem .3rem;
  background:var(--kartu);
  border-radius:var(--radius-lg);
  padding:1.1rem .6rem;
  box-shadow:var(--shadow-md);
  margin-bottom:1.7rem;
}
.menu-item{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:.4rem;
  text-decoration:none;
  color:var(--teks);
  font-size:.67rem;
  font-weight:600;
  text-align:center;
  padding:.35rem .1rem;
  border-radius:.8rem;
  transition:background .12s ease, transform .1s ease;
}
.menu-item:active{ background:#eef3f0; transform:scale(.95); }
.menu-ikon{
  width:44px; height:44px;
  border-radius:14px;
  display:flex; align-items:center; justify-content:center;
  font-size:1.25rem;
  background:color-mix(in srgb, var(--c) 12%, #fff);
  border:1px solid color-mix(in srgb, var(--c) 18%, #fff);
}

/* ---------- Grup & Topik (accordion) ---------- */
.grup{ margin-bottom:1.8rem; }
.grup-judul{
  font-size:.76rem;
  font-weight:700;
  text-transform:uppercase;
  letter-spacing:.07em;
  color:var(--teks-muted);
  margin:0 0 .7rem .3rem;
}

details{
  background:var(--kartu);
  border:1px solid var(--garis);
  border-radius:var(--radius-md);
  margin-bottom:.65rem;
  overflow:hidden;
  transition:box-shadow .15s ease;
}
details[open]{ box-shadow:var(--shadow-md); border-color:#dbe5e0; }

summary{
  list-style:none;
  cursor:pointer;
  padding:1rem 1.1rem;
  font-weight:600;
  font-size:.9rem;
  display:flex;
  align-items:center;
  gap:.65rem;
  position:relative;
}
summary::-webkit-details-marker{ display:none; }
summary::after{
  content:"";
  position:absolute;
  right:1.1rem;
  width:9px; height:9px;
  border-right:2px solid var(--teks-muted);
  border-bottom:2px solid var(--teks-muted);
  transform:rotate(-45deg);
  transition:transform .18s ease;
}
details[open] summary::after{ transform:rotate(45deg); }
.s-ikon{ font-size:1.1rem; line-height:1; }

.isi{
  padding:0 1.15rem 1.2rem 2.75rem;
  font-size:.86rem;
  color:var(--teks);
}
.isi ol, .isi ul{ padding-left:1.1rem; margin:.5rem 0; }
.isi li{ margin-bottom:.45rem; }
.isi p{ margin:.55rem 0; }
.isi a{ color:var(--biru-d); font-weight:600; text-decoration:underline; text-underline-offset:2px; }
.isi code{
  background:#eef1ef; padding:.12rem .4rem; border-radius:.35rem; font-size:.85em;
  font-family:ui-monospace,Consolas,monospace;
}

.catatan{
  background:#f0faf6;
  border:1px solid #d3ecdf;
  border-radius:var(--radius-sm);
  padding:.75rem .9rem;
  font-size:.8rem;
  color:#1a5f45;
  margin-top:.75rem;
  line-height:1.5;
}
.catatan-penting{
  background:#fff8ea;
  border-color:#f3dfa8;
  color:#7a5200;
}

.kartu-dua{
  display:flex;
  gap:.65rem;
  margin:.75rem 0;
  flex-wrap:wrap;
}
.kartu-warna{
  flex:1 1 140px;
  border-radius:var(--radius-sm);
  padding:.8rem .9rem;
  background:color-mix(in srgb, var(--c) 6%, #fff);
  border:1px solid color-mix(in srgb, var(--c) 22%, #fff);
}
.kartu-judul{ font-weight:700; font-size:.85rem; color:var(--c); margin-bottom:.3rem; }
.kartu-teks{ font-size:.78rem; color:var(--teks-muted); }

.placeholder-note{
  font-style:italic;
  color:#a3aca7;
  font-size:.78rem;
}

/* ---------- Slot gambar (screenshot langkah) ---------- */
.gambar-slot{
  width:100%;
  max-width:260px;
  margin:.75rem auto;
  border-radius:var(--radius-sm);
  overflow:hidden;
  background:#eef1ef;
  aspect-ratio:9/17;
  box-shadow:var(--shadow-sm);
}
.gambar-slot img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
  /* Cegah menu "buka gambar di tab baru" / "simpan gambar" saat tekan-lama di HP */
  -webkit-touch-callout:none;
  -webkit-user-select:none;
  user-select:none;
  -webkit-user-drag:none;
}
.gambar-slot figcaption{ display:none; }

/* Sebelum gambar asli diupload: kotak putus-putus + nama file yg diharapkan */
.gambar-slot.kosong{
  border:2px dashed #cfd8d3;
  background:#fafcfb;
  box-shadow:none;
  display:flex;
  align-items:center;
  justify-content:center;
}
.gambar-slot.kosong img{ display:none; }
.gambar-slot.kosong figcaption{
  display:block;
  font-family:ui-monospace,Consolas,monospace;
  font-size:.68rem;
  color:#9aa39d;
  text-align:center;
  padding:.6rem;
}

/* ---------- Kotak pengguna iOS ---------- */
.kotak-ios{
  background:var(--kartu);
  border:1px solid var(--garis);
  border-radius:var(--radius-md);
  padding:1.1rem 1.2rem;
  text-align:center;
  box-shadow:var(--shadow-sm);
}
.ios-judul{
  font-weight:700;
  font-size:.9rem;
  margin-bottom:.5rem;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:.4rem;
}
.kotak-ios p{ font-size:.82rem; color:var(--teks-muted); margin:.4rem 0; }
.btn-ios{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  background:#000;
  color:#fff;
  font-weight:700;
  font-size:.86rem;
  padding:.7rem 1.4rem;
  border-radius:999px;
  text-decoration:none;
  margin-top:.3rem;
}

/* ---------- Footer ---------- */
.footer{
  text-align:center;
  font-size:.74rem;
  color:var(--teks-muted);
  padding:1.8rem 1rem 2.2rem;
  border-top:1px solid var(--garis);
  margin-top:.5rem;
}
.footer-tanggal{ font-size:.7rem; opacity:.75; margin-top:.3rem; }

/* ---------- Fokus keyboard (a11y) ----------
   Outline jelas saat navigasi pakai Tab, TIDAK muncul saat klik/sentuh
   biasa (berkat :focus-visible) — jaga estetika tapi tetap aksesibel. */
a:focus-visible,
button:focus-visible,
summary:focus-visible{
  outline:2px solid var(--teal-d);
  outline-offset:3px;
  border-radius:6px;
}

/* ---------- Responsif desktop ---------- */
@media (min-width:560px){
  .menu-grid{ grid-template-columns:repeat(6,1fr); }
  .wrap{ padding-bottom:3rem; }
}