/* Gubuk Tekno — AI praktis buat UMKM
   Palet diambil dari warung: hijau daun pisang, kuning cat papan warung, merah cabai. */

:root {
  --kertas: #ffffff;
  --permukaan: #f3f7f2;
  --ink: #17251e;
  --abu: #56665d;
  --garis: #d6e0d8;
  --daun: #2e6b3f;
  --daun-tua: #1f4d2c;
  --daun-muda: #e2efe3;
  --kuning: #ffcb3d;
  --kuning-muda: #fff3c9;
  --cabai: #c8352b;
  --di-atas-daun: #ffffff;

  --f-display: "Bricolage Grotesque", "Arial Narrow", system-ui, sans-serif;
  --f-teks: "Atkinson Hyperlegible", system-ui, -apple-system, "Segoe UI", sans-serif;

  --lebar: 1120px;
  --sisi: clamp(16px, 4vw, 32px);
  --r-kecil: 6px;
  --r: 14px;
  --bayang: 4px 4px 0 var(--ink);
}

@media (prefers-color-scheme: dark) {
  :root {
    --kertas: #101a14;
    --permukaan: #16241b;
    --ink: #eef3ee;
    --abu: #a7b6ac;
    --garis: #2b3d31;
    --daun: #6fbf83;
    --daun-tua: #8fd3a0;
    --daun-muda: #1d3324;
    --kuning: #ffd257;
    --kuning-muda: #3a3216;
    --cabai: #ff7a6b;
    --di-atas-daun: #0e1a12;
    --bayang: 4px 4px 0 #000;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 80px; }
body {
  margin: 0;
  background: var(--kertas);
  color: var(--ink);
  font-family: var(--f-teks);
  font-size: 1.0625rem;
  line-height: 1.6;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--daun); text-underline-offset: 3px; text-decoration-thickness: 1.5px; }
a:hover { color: var(--daun-tua); }
:focus-visible { outline: 3px solid var(--kuning); outline-offset: 2px; border-radius: 4px; }
::selection { background: var(--kuning); color: #17251e; }

h1, h2, h3 {
  font-family: var(--f-display);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 0.5em;
  font-weight: 750;
  text-wrap: balance;
}
h1 { font-size: clamp(2.4rem, 6.2vw, 4.4rem); font-variation-settings: "opsz" 96; }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); }
h3 { font-size: 1.25rem; line-height: 1.25; letter-spacing: -0.01em; }
p { margin: 0 0 1em; }

.wadah { max-width: var(--lebar); margin: 0 auto; padding: 0 var(--sisi); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.lewati { position: absolute; left: -999px; top: 8px; background: var(--kuning); color: #17251e; padding: 8px 12px; z-index: 50; }
.lewati:focus { left: 8px; }

/* ---------- Tombol ---------- */
.tombol {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: 700 1rem/1.2 var(--f-teks); text-decoration: none; cursor: pointer;
  padding: 14px 20px; border-radius: 10px; border: 2px solid var(--ink);
  background: var(--kertas); color: var(--ink); min-height: 48px;
  transition: transform .12s ease, box-shadow .12s ease;
}
.tombol:hover { color: var(--ink); background: var(--permukaan); }
.tombol-utama { background: var(--kuning); color: #17251e; box-shadow: var(--bayang); }
.tombol-utama:hover { background: var(--kuning); color: #17251e; transform: translate(-1px, -1px); box-shadow: 5px 5px 0 var(--ink); }
.tombol-utama:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--ink); }
.tombol-kecil { padding: 8px 14px; min-height: 40px; font-size: 0.95rem; }
.tombol[disabled] { opacity: .5; cursor: not-allowed; }

/* ---------- Seksi umum ---------- */
.seksi { padding: clamp(48px, 7vw, 88px) 0; }
.seksi-abu { background: var(--permukaan); }
.seksi-kepala { max-width: 640px; margin-bottom: 32px; }
.seksi-kepala p { color: var(--abu); font-size: 1.1rem; }

/* Chip */
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin: 0; padding: 0; list-style: none; }
.chip {
  display: inline-flex; align-items: center; gap: 8px; padding: 10px 16px; border-radius: 999px;
  border: 1.5px solid var(--ink); background: var(--kertas); color: var(--ink); font: 700 1rem var(--f-teks);
  text-decoration: none; cursor: pointer; min-height: 44px;
}
.chip:hover { background: var(--kuning-muda); color: var(--ink); }
.chip[aria-pressed="true"] { background: var(--ink); color: var(--kertas); }
.chip-besar { font-size: 1.1rem; padding: 14px 22px; }

/* Artikel list */
.artikel-unggulan {
  display: grid; grid-template-columns: 1.2fr 1fr; gap: 0; border: 2px solid var(--ink); border-radius: var(--r);
  overflow: hidden; text-decoration: none; color: var(--ink); margin-bottom: 32px;
}
.artikel-unggulan:hover { color: var(--ink); }
.artikel-unggulan:hover h3 { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 4px; }
.artikel-unggulan .isi { padding: clamp(20px, 3vw, 32px); }
.artikel-unggulan h3 { font-size: clamp(1.4rem, 2.6vw, 1.9rem); }
.artikel-unggulan .gambar { background: var(--kuning); display: grid; place-items: center; padding: 24px; min-height: 220px; }
.artikel-unggulan p { color: var(--abu); }
.meta { font-size: .9rem; color: var(--abu); }
@media (max-width: 760px) { .artikel-unggulan { grid-template-columns: 1fr; } .artikel-unggulan .gambar { order: -1; min-height: 160px; } }

.daftar-artikel { list-style: none; margin: 0; padding: 0; columns: 2; column-gap: 40px; }
.daftar-artikel li { break-inside: avoid; padding: 14px 0; border-top: 1px solid var(--garis); }
.daftar-artikel .judul { font-weight: 700; display: block; }
.daftar-artikel .status { font-size: .85rem; color: var(--abu); }
@media (max-width: 760px) { .daftar-artikel { columns: 1; } }

/* Gabung WA */
.gabung { border: 2px solid var(--ink); border-radius: var(--r); padding: clamp(24px, 4vw, 40px); display: grid; grid-template-columns: 1.4fr auto; gap: 24px; align-items: center; background: var(--kuning-muda); }
.gabung h2 { margin-bottom: 6px; }
.gabung p { margin: 0; color: var(--abu); }
@media (max-width: 760px) { .gabung { grid-template-columns: 1fr; } }

/* ---------- Footer ---------- */
.kaki { border-top: 1px solid var(--garis); padding: 40px 0 48px; margin-top: 0; font-size: .95rem; color: var(--abu); }
.kaki .wadah { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
.kaki h3 { font-size: 1rem; color: var(--ink); margin-bottom: 8px; font-family: var(--f-teks); letter-spacing: 0; }
.kaki ul { list-style: none; margin: 0; padding: 0; }
.kaki li { margin-bottom: 6px; }
.kaki a { color: var(--abu); }
@media (max-width: 760px) { .kaki .wadah { grid-template-columns: 1fr 1fr; } .kaki .wadah > :first-child { grid-column: 1 / -1; } }

/* ---------- Halaman dalam ---------- */
.judul-halaman { padding: clamp(32px, 6vw, 64px) 0 clamp(20px, 3vw, 32px); }
.judul-halaman h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); max-width: 18ch; }
.judul-halaman p { color: var(--abu); font-size: 1.15rem; max-width: 56ch; }

/* Perpustakaan prompt */
.saring { position: sticky; top: 76px; z-index: 10; background: var(--kertas); padding: 12px 0 14px; border-bottom: 1px solid var(--garis); }
.cari { position: relative; margin-bottom: 12px; }
.cari input {
  width: 100%; font: 1.05rem var(--f-teks); padding: 14px 16px 14px 46px; border: 2px solid var(--ink); border-radius: 12px;
  background: var(--kertas); color: var(--ink);
}
.cari svg { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); width: 22px; height: 22px; color: var(--abu); }
.saring-baris { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 4px; scrollbar-width: thin; }
.saring-baris + .saring-baris { margin-top: 8px; }
.saring-baris .chip { flex: none; padding: 7px 14px; min-height: 38px; font-size: .95rem; }
.saring-baris .ket-saring { flex: none; align-self: center; font-size: .9rem; color: var(--abu); font-weight: 700; min-width: 64px; }
.info-hasil { color: var(--abu); margin: 20px 0 12px; font-size: .95rem; }

.daftar-prompt { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr)); gap: 18px; padding-bottom: 64px; }
.kartu-prompt { border: 1.5px solid var(--garis); border-radius: var(--r); padding: 18px; display: flex; flex-direction: column; background: var(--kertas); }
.kartu-prompt .tag { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.kartu-prompt .tag span { font-size: .8rem; font-weight: 700; padding: 3px 9px; border-radius: 999px; background: var(--daun-muda); color: var(--daun-tua); }
.kartu-prompt .tag span.usaha { background: var(--kuning-muda); color: var(--ink); }
.kartu-prompt h3 { font-size: 1.15rem; margin-bottom: 4px; }
.kartu-prompt .guna { color: var(--abu); font-size: .95rem; margin-bottom: 12px; }
.teks-prompt {
  font-size: .95rem; line-height: 1.55; white-space: pre-wrap; background: var(--permukaan); border-radius: 10px;
  padding: 14px; margin: 0 0 14px; flex: 1; max-height: 260px; overflow: auto; border: 1px solid var(--garis);
}
.isian { background: var(--kuning); color: #17251e; border-radius: 3px; padding: 0 3px; font-weight: 700; }
.kartu-prompt .bawah { display: flex; gap: 8px; align-items: center; justify-content: space-between; }
.kosong { text-align: center; padding: 48px 16px; border: 1.5px dashed var(--garis); border-radius: var(--r); grid-column: 1 / -1; }

/* Toast */
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px); opacity: 0; pointer-events: none;
  background: var(--ink); color: var(--kertas); padding: 12px 18px; border-radius: 10px; font-weight: 700; z-index: 60;
  transition: opacity .2s, transform .2s;
}
.toast.tampil { opacity: 1; transform: translate(-50%, 0); }

/* Alat generator */
.alat { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(24px, 4vw, 48px); align-items: start; padding-bottom: 72px; }
@media (max-width: 900px) { .alat { grid-template-columns: 1fr; } }
.formulir fieldset { border: 0; padding: 0; margin: 0 0 20px; }
.formulir legend, .formulir label.judul-isian { font-weight: 700; display: block; margin-bottom: 6px; }
.formulir .bantuan { font-size: .9rem; color: var(--abu); margin: -2px 0 8px; }
.formulir input[type=text], .formulir textarea, .formulir select {
  width: 100%; font: 1rem var(--f-teks); padding: 12px 14px; border: 1.5px solid var(--abu); border-radius: 10px;
  background: var(--kertas); color: var(--ink);
}
.formulir textarea { min-height: 96px; resize: vertical; }
.formulir input:focus, .formulir textarea:focus, .formulir select:focus { outline: none; border-color: var(--daun); box-shadow: 0 0 0 3px var(--daun-muda); }
.pilihan { display: flex; flex-wrap: wrap; gap: 8px; }
.pilihan label { position: relative; }
.pilihan input { position: absolute; opacity: 0; inset: 0; }
.pilihan span {
  display: inline-flex; padding: 9px 14px; border-radius: 999px; border: 1.5px solid var(--ink); font-weight: 700; font-size: .95rem; cursor: pointer; min-height: 40px; align-items: center;
}
.pilihan input:checked + span { background: var(--ink); color: var(--kertas); }
.pilihan input:focus-visible + span { outline: 3px solid var(--kuning); outline-offset: 2px; }
.dua-kolom { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 520px) { .dua-kolom { grid-template-columns: 1fr; } }

.hasil { position: sticky; top: 84px; border: 2px solid var(--ink); border-radius: var(--r); box-shadow: 8px 8px 0 var(--daun); background: var(--kertas); }
.hasil-kepala { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 14px 18px; border-bottom: 1px solid var(--garis); }
.hasil-kepala strong { font-family: var(--f-display); font-size: 1.2rem; }
.hasil pre { margin: 0; padding: 18px; white-space: pre-wrap; font: .95rem/1.6 var(--f-teks); max-height: 52vh; overflow: auto; }
.hasil-aksi { padding: 14px 18px 18px; border-top: 1px solid var(--garis); display: grid; gap: 10px; }
.hasil-aksi .baris-ai { display: flex; flex-wrap: wrap; gap: 8px; }
.hasil-aksi p { font-size: .9rem; color: var(--abu); margin: 0; }
@media (max-width: 900px) { .hasil { position: static; } }

/* ---------- Artikel ---------- */
.artikel { max-width: 720px; margin: 0 auto; padding: 0 var(--sisi) 72px; }
.artikel header { padding: clamp(32px, 6vw, 64px) 0 24px; border-bottom: 1px solid var(--garis); margin-bottom: 32px; }
.artikel header h1 { font-size: clamp(2rem, 5vw, 3.1rem); }
.artikel header .ringkas { font-size: 1.2rem; color: var(--abu); }
.remah { font-size: .9rem; margin-bottom: 16px; color: var(--abu); }
.remah a { color: var(--abu); }
.artikel h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-top: 1.8em; }
.artikel h3 { margin-top: 1.4em; }
.artikel ul, .artikel ol { padding-left: 1.3em; }
.artikel li { margin-bottom: .4em; }
.artikel blockquote { margin: 1.4em 0; padding: 16px 20px; border-left: 4px solid var(--kuning); background: var(--kuning-muda); border-radius: 0 10px 10px 0; }
.artikel blockquote p:last-child { margin: 0; }
.daftar-isi { background: var(--permukaan); border-radius: var(--r); padding: 18px 22px; margin-bottom: 32px; }
.daftar-isi strong { display: block; margin-bottom: 6px; }
.daftar-isi ol { margin: 0; }
.langkah { counter-reset: langkah; list-style: none; padding: 0 !important; }
.langkah > li { counter-increment: langkah; position: relative; padding-left: 56px; margin-bottom: 1.4em; }
.langkah > li::before {
  content: counter(langkah); position: absolute; left: 0; top: -2px; width: 40px; height: 40px; border-radius: 50%;
  background: var(--ink); color: var(--kertas); font: 800 1.2rem/40px var(--f-display); text-align: center;
}
.langkah > li > strong:first-child { display: block; font-family: var(--f-display); font-size: 1.2rem; }
.kotak-prompt { position: relative; border: 2px solid var(--ink); border-radius: var(--r); margin: 1.4em 0; }
.kotak-prompt .kepala-kotak { display: flex; justify-content: space-between; align-items: center; padding: 10px 14px; border-bottom: 1px solid var(--garis); font-weight: 700; }
.kotak-prompt pre { margin: 0; padding: 16px; white-space: pre-wrap; font: .97rem/1.6 var(--f-teks); background: var(--permukaan); border-radius: 0 0 var(--r) var(--r); }
.banding { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 1.4em 0; }
.banding > div { border-radius: var(--r); padding: 16px 18px; font-size: .97rem; }
.banding .lama { background: var(--permukaan); border: 1px dashed var(--garis); }
.banding .baru { border: 2px solid var(--daun); }
.banding .lbl { font-weight: 700; display: block; margin-bottom: 6px; }
.banding .lama .lbl { color: var(--cabai); }
.banding .baru .lbl { color: var(--daun); }
@media (max-width: 640px) { .banding { grid-template-columns: 1fr; } }
.ajakan { border: 2px solid var(--ink); background: var(--kuning-muda); border-radius: var(--r); padding: 22px; margin: 2em 0; }
.ajakan h3 { margin-top: 0; }
.cek { list-style: none; padding: 0 !important; }
.cek li { position: relative; padding-left: 32px; }
.cek li::before { content: ""; position: absolute; left: 2px; top: 4px; width: 18px; height: 18px; border: 2px solid var(--daun); border-radius: 4px; }
details { border-bottom: 1px solid var(--garis); padding: 14px 0; }
details summary { font-weight: 700; cursor: pointer; }
details p { margin: 10px 0 0; }
.kaki .logo, .kaki .logo:hover { color: var(--ink); }
.formulir legend { padding: 0; }

/* =====================================================================
   Lapisan modern & 3D
   ===================================================================== */
:root {
  --kaca: color-mix(in srgb, var(--kertas) 72%, transparent);
  --kaca-garis: color-mix(in srgb, var(--ink) 10%, transparent);
  --bayang-lembut: 0 1px 2px rgba(23,37,30,.06), 0 8px 24px -6px rgba(23,37,30,.14), 0 24px 48px -12px rgba(23,37,30,.12);
  --r-besar: 24px;
}
@media (prefers-color-scheme: dark) {
  :root { --bayang-lembut: 0 1px 2px rgba(0,0,0,.4), 0 12px 32px -8px rgba(0,0,0,.6); }
}

/* ---------- Header melayang ---------- */
.kepala { position: sticky; top: 10px; z-index: 20; padding: 0 var(--sisi); margin-top: 10px; }
.kepala .wadah {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 60px;
  padding: 0 10px 0 16px; background: var(--kaca); border: 1px solid var(--kaca-garis); border-radius: 999px;
  backdrop-filter: blur(14px) saturate(1.4); -webkit-backdrop-filter: blur(14px) saturate(1.4);
  box-shadow: 0 6px 24px -10px rgba(23,37,30,.25);
}
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.logo svg { width: 34px; height: 34px; }
.logo span { font-family: var(--f-display); font-weight: 800; font-size: 1.3rem; letter-spacing: -0.03em; }
.logo:hover { color: var(--ink); }
.nav { display: flex; gap: 4px; align-items: center; }
.nav a { text-decoration: none; color: var(--ink); padding: 9px 14px; border-radius: 999px; font-weight: 700; font-size: 0.98rem; }
.nav a:hover { background: var(--daun-muda); }
.nav a[aria-current="page"] { background: var(--ink); color: var(--kertas); }
.nav-tombol { display: none; }
@media (max-width: 760px) {
  .kepala .wadah { padding: 0 8px 0 12px; height: 56px; }
  .nav-tombol {
    display: inline-flex; align-items: center; border: 2px solid var(--ink); background: none; color: var(--ink);
    font: 700 0.95rem var(--f-teks); padding: 6px 14px; border-radius: 999px; cursor: pointer;
  }
  .nav {
    position: absolute; top: 64px; left: var(--sisi); right: var(--sisi); flex-direction: column; align-items: stretch;
    background: var(--kertas); border: 1px solid var(--kaca-garis); border-radius: 20px; padding: 8px; display: none;
    box-shadow: var(--bayang-lembut);
  }
  .nav.buka { display: flex; }
  .nav a { padding: 12px 14px; border-radius: 12px; }
}

/* ---------- Hero 3D ---------- */
.hero { position: relative; overflow: hidden; padding: clamp(24px, 5vw, 56px) 0 clamp(40px, 6vw, 72px); margin-top: -70px; padding-top: calc(70px + clamp(24px, 5vw, 56px)); }
.hero-latar { position: absolute; inset: 0; z-index: -1; pointer-events: none; -webkit-mask-image: linear-gradient(to bottom, #000 70%, transparent); mask-image: linear-gradient(to bottom, #000 70%, transparent); }
.hero-latar::before {
  content: ""; position: absolute; inset: -20% -10% 0;
  background:
    radial-gradient(40% 45% at 72% 42%, color-mix(in srgb, var(--kuning) 45%, transparent), transparent 70%),
    radial-gradient(45% 50% at 85% 75%, color-mix(in srgb, var(--daun) 30%, transparent), transparent 70%),
    radial-gradient(35% 40% at 10% 10%, color-mix(in srgb, var(--daun-muda) 90%, transparent), transparent 70%);
  filter: blur(10px);
}
.hero-latar::after {
  /* lantai grid berperspektif */
  content: ""; position: absolute; left: -25%; right: -25%; bottom: -10%; height: 70%;
  background-image:
    linear-gradient(to right, color-mix(in srgb, var(--daun) 22%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in srgb, var(--daun) 22%, transparent) 1px, transparent 1px);
  background-size: 56px 56px;
  transform: perspective(520px) rotateX(62deg);
  transform-origin: 50% 100%;
  -webkit-mask-image: linear-gradient(to top, transparent 0, #000 30%, transparent 85%);
  mask-image: linear-gradient(to top, transparent 0, #000 30%, transparent 85%);
}
.hero .wadah { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(16px, 3vw, 40px); align-items: center; }
.hero h1 { max-width: 11ch; font-size: clamp(2.6rem, 6.6vw, 4.9rem); }
.hero p.pengantar { font-size: 1.2rem; color: var(--abu); max-width: 34ch; }
.hero .aksi { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.panggung-wadah { position: relative; }
.panggung {
  position: relative; aspect-ratio: 1 / 1; width: 100%; max-height: 640px; min-height: 340px;
  touch-action: pan-y; cursor: grab; user-select: none;
}
.panggung:active { cursor: grabbing; }
.panggung canvas { position: absolute; inset: 0; width: 100% !important; height: 100% !important; opacity: 0; transition: opacity .8s ease; }
.panggung.siap canvas { opacity: 1; }
.panggung .cadangan { position: absolute; inset: 22%; width: 56%; height: 56%; border-radius: 28%; box-shadow: 0 30px 60px -20px rgba(23,37,30,.45); transition: opacity .5s; }
.panggung.siap .cadangan { display: none; }
.kaca {
  position: absolute; z-index: 2; display: flex; align-items: center; gap: 10px;
  padding: 10px 14px 10px 10px; border-radius: 16px; font-weight: 700; font-size: .95rem; color: var(--ink);
  background: var(--kaca); border: 1px solid color-mix(in srgb, #fff 60%, transparent);
  backdrop-filter: blur(12px) saturate(1.5); -webkit-backdrop-filter: blur(12px) saturate(1.5);
  box-shadow: var(--bayang-lembut); pointer-events: none;
}
.kaca .cek-bulat { width: 28px; height: 28px; border-radius: 50%; background: var(--daun); color: #fff; display: grid; place-items: center; flex: none; }
.kaca .cek-bulat svg { width: 16px; height: 16px; }
.kaca small { display: block; font-weight: 400; color: var(--abu); font-size: .8rem; }
.kaca-1 { top: 12%; left: -2%; }
.kaca-2 { top: 44%; right: -2%; }
.kaca-3 { bottom: 9%; left: 8%; }
.petunjuk { position: absolute; bottom: 0; right: 4%; margin: 0; font-size: .85rem; color: var(--abu); display: none; }
@media (pointer: coarse) { .petunjuk { display: block; } }
@media (prefers-reduced-motion: no-preference) {
  .kaca { animation: apung 6s ease-in-out infinite; }
  .kaca-2 { animation-delay: -2s; }
  .kaca-3 { animation-delay: -4s; }
  @keyframes apung { 50% { transform: translateY(-8px); } }
}
@media (max-width: 860px) {
  .hero .wadah { grid-template-columns: 1fr; }
  .panggung { min-height: 0; max-height: 460px; aspect-ratio: 1 / 0.92; }
  .kaca { font-size: .85rem; padding: 8px 12px 8px 8px; }
  .kaca small { display: none; }
  .kaca-1 { left: 0; top: 6%; } .kaca-2 { right: 0; } .kaca-3 { left: 2%; bottom: 8%; }
}

/* ---------- Kemiringan 3D ikut kursor ---------- */
.tilt {
  transform: perspective(1000px) rotateX(calc(var(--bx, 0deg) + var(--rx, 0deg))) rotateY(calc(var(--by, 0deg) + var(--ry, 0deg)));
  transition: transform .6s cubic-bezier(.2,.8,.2,1);
  transform-style: preserve-3d; will-change: transform; position: relative;
}
.tilt.gerak { transition-duration: .12s; }
.tilt::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; opacity: 0; transition: opacity .3s;
  background: radial-gradient(420px circle at var(--gx, 50%) var(--gy, 50%), rgba(255,255,255,.38), transparent 45%);
  mix-blend-mode: soft-light;
}
.tilt.gerak::after { opacity: 1; }

/* ---------- Sebelum / sesudah 3D ---------- */
.banding-3d { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(32px, 5vw, 72px); align-items: center; }
.banding-teks p { color: var(--abu); font-size: 1.1rem; max-width: 44ch; }
.perubahan { list-style: none; padding: 0; margin: 0 0 28px; display: grid; gap: 12px; }
.perubahan li { display: flex; gap: 12px; align-items: flex-start; }
.perubahan li::before { content: ""; flex: none; width: 22px; height: 22px; margin-top: 2px; border-radius: 7px; background: var(--kuning) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2317251e' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5 9-10'/%3E%3C/svg%3E") center / 14px no-repeat; }
.demo3d { perspective: 1400px; padding: 40px 10px 30px; }
.tumpuk {
  position: relative; transform-style: preserve-3d;
  transform: rotateX(calc(10deg + var(--rx, 0deg))) rotateY(calc(-16deg + var(--ry, 0deg)));
  transition: transform .7s cubic-bezier(.2,.8,.2,1);
}
.demo3d.gerak .tumpuk { transition-duration: .15s; }
.kartu-3d { border-radius: var(--r-besar); padding: 20px 22px; transition: transform 1s cubic-bezier(.2,.8,.2,1), opacity .6s; transform-style: preserve-3d; }
.kartu-3d .label { font-size: .85rem; font-weight: 700; display: block; margin-bottom: 6px; }
.kartu-3d.sebelum {
  background: var(--permukaan); border: 1px dashed color-mix(in srgb, var(--abu) 45%, transparent); color: var(--abu);
  width: 78%; transform: translate3d(0, 0, -70px) rotateZ(-3deg);
}
.kartu-3d.sebelum .label { color: var(--cabai); }
.kartu-3d.sebelum p { margin: 0; font-size: 1.15rem; font-style: italic; }
.kartu-3d.sesudah {
  position: relative; background: var(--kertas); border: 1px solid var(--kaca-garis); margin: 14px 0 0 12%;
  box-shadow: var(--bayang-lembut), 0 40px 80px -30px color-mix(in srgb, var(--daun) 55%, transparent);
  transform: translate3d(0, 0, 50px);
}
.kartu-3d.sesudah .label { color: var(--daun); }
.kartu-3d.sesudah h3 { font-size: 1.22rem; margin-bottom: 8px; }
.kartu-3d.sesudah p { margin: 0 0 10px; font-size: .98rem; }
.kartu-3d.sesudah ul { margin: 0; padding-left: 1.1em; font-size: .98rem; }
.kartu-3d .stiker {
  position: absolute; top: -20px; right: -10px; transform: translateZ(60px) rotate(6deg);
  background: var(--kuning); color: #17251e; font: 800 1rem/1 var(--f-display); padding: 10px 14px; border-radius: 8px;
  box-shadow: 0 10px 20px -6px rgba(0,0,0,.3);
}
/* momen masuk: kartu mulai rata lalu terbuka ke ruang 3D */
.demo3d:not(.tampil) .kartu-3d.sebelum { transform: translate3d(0, 40px, 0) rotateZ(0); opacity: .4; }
.demo3d:not(.tampil) .kartu-3d.sesudah { transform: translate3d(0, 60px, 0); opacity: 0; }
@media (prefers-reduced-motion: reduce) {
  .demo3d .kartu-3d { transition: none; }
  .demo3d:not(.tampil) .kartu-3d.sebelum, .demo3d:not(.tampil) .kartu-3d.sesudah { transform: none; opacity: 1; }
}
@media (max-width: 860px) {
  .banding-3d { grid-template-columns: 1fr; }
  .tumpuk { transform: rotateX(8deg) rotateY(-8deg); }
}

/* ---------- Bento kebutuhan ---------- */
.bento { display: grid; grid-template-columns: 1.15fr 1fr 1fr; grid-auto-rows: minmax(200px, auto); gap: 16px; }
.ubin {
  display: flex; flex-direction: column; justify-content: space-between; gap: 18px; text-decoration: none; color: var(--ink);
  padding: 22px; border-radius: var(--r-besar); border: 1px solid var(--kaca-garis);
  background: linear-gradient(160deg, var(--kertas), var(--permukaan));
  box-shadow: var(--bayang-lembut); overflow: hidden;
}
.ubin:hover { color: var(--ink); }
.ubin .ikon3d { width: 84px; height: 84px; transform: translateZ(40px); filter: drop-shadow(0 14px 14px rgba(23,37,30,.22)); }
.ubin strong { font-family: var(--f-display); font-size: 1.4rem; line-height: 1.15; display: block; letter-spacing: -0.01em; }
.ubin .ket { color: var(--abu); display: block; margin-top: 4px; }
.ubin .jumlah { align-self: flex-start; font-weight: 700; font-size: .9rem; color: var(--daun-tua); background: var(--daun-muda); padding: 5px 12px; border-radius: 999px; transform: translateZ(20px); }
.ubin-besar { grid-row: span 2; background: linear-gradient(165deg, var(--daun-muda), var(--kertas) 75%); }
.ubin-besar .ikon3d { width: 150px; height: 150px; }
.ubin-besar strong { font-size: clamp(1.7rem, 3vw, 2.2rem); }
.ubin-teks { transform: translateZ(24px); }
@media (max-width: 900px) { .bento { grid-template-columns: 1fr 1fr; } .ubin-besar { grid-column: span 2; grid-row: auto; flex-direction: row; align-items: center; } }
@media (max-width: 560px) {
  .bento { grid-template-columns: 1fr; grid-auto-rows: auto; gap: 12px; }
  .ubin, .ubin-besar { grid-column: auto; flex-direction: row; align-items: center; padding: 16px; gap: 14px; }
  .ubin .ikon3d, .ubin-besar .ikon3d { width: 64px; height: 64px; flex: none; }
  .ubin strong, .ubin-besar strong { font-size: 1.2rem; }
  .ubin-teks { flex: 1; }
  .ubin .jumlah { display: none; }
}

/* ---------- Pita alat dengan HP 3D ---------- */
.pita-alat { position: relative; overflow: hidden; background: radial-gradient(80% 120% at 85% 20%, #3f8a52, var(--daun) 45%, #1f4d2c); color: #fff; }
.pita-alat .wadah { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 5vw, 64px); align-items: center; }
.pita-alat h2 { color: #fff; }
.pita-alat p { opacity: .92; max-width: 46ch; }
.pita-alat .tombol-utama { box-shadow: 4px 4px 0 #173a22; border-color: #173a22; }
.adegan-hp { display: grid; place-items: center; perspective: 1400px; padding: 10px 0; }
.hp {
  --by: -24deg; --bx: 10deg;
  width: min(300px, 78vw); aspect-ratio: 9 / 18.5; border-radius: 44px; padding: 12px; position: relative;
  background: linear-gradient(145deg, #2a3b31, #0f1913);
  box-shadow:
    1px 1px 0 #0b130e, 2px 2px 0 #0b130e, 3px 3px 0 #0b130e, 4px 4px 0 #0b130e, 5px 5px 0 #0b130e,
    6px 6px 0 #0b130e, 7px 7px 0 #0b130e, 8px 8px 0 #0b130e,
    40px 50px 70px -10px rgba(0,0,0,.5);
}
.hp-layar {
  height: 100%; border-radius: 34px; overflow: hidden; background: #f6faf6; color: #17251e; padding: 44px 14px 16px;
  display: flex; flex-direction: column; gap: 10px; position: relative; transform: translateZ(1px);
}
.hp-layar::before { content: ""; position: absolute; top: 12px; left: 50%; width: 84px; height: 22px; margin-left: -42px; background: #0f1913; border-radius: 999px; }
.hp-judul { font: 800 1.05rem var(--f-display); margin: 0 0 2px; }
.hp-isian { background: #fff; border: 1px solid #d6e0d8; border-radius: 12px; padding: 8px 10px; font-size: .82rem; line-height: 1.35; }
.hp-isian span { display: block; font-size: .7rem; font-weight: 700; color: #56665d; margin-bottom: 2px; }
.hp-tombol { background: #ffcb3d; border-radius: 12px; text-align: center; font-weight: 700; font-size: .85rem; padding: 10px; margin-top: auto; }
.hp-hasil { background: #e2efe3; border-radius: 12px; padding: 10px; font-size: .74rem; line-height: 1.4; color: #1f4d2c; }
.hp-melayang {
  position: absolute; right: -34px; top: 26%; transform: translateZ(70px) rotate(4deg);
  background: #fff; color: #17251e; border-radius: 14px; padding: 10px 12px; font-weight: 700; font-size: .85rem;
  box-shadow: 0 18px 30px -10px rgba(0,0,0,.45); display: flex; gap: 8px; align-items: center;
}
.hp-melayang i { width: 10px; height: 10px; border-radius: 50%; background: #2e6b3f; box-shadow: 0 0 0 4px #e2efe3; }
@media (max-width: 860px) { .pita-alat .wadah { grid-template-columns: 1fr; } .hp { --by: -14deg; } .hp-melayang { right: -12px; } }

/* ---------- Sentuhan modern lain ---------- */
.chip-besar { box-shadow: 0 3px 0 var(--ink); transition: transform .12s, box-shadow .12s; }
.chip-besar:hover { transform: translateY(-2px); box-shadow: 0 5px 0 var(--ink); }
.chip-besar:active { transform: translateY(2px); box-shadow: 0 1px 0 var(--ink); }
.artikel-unggulan { border: 1px solid var(--kaca-garis); border-radius: var(--r-besar); box-shadow: var(--bayang-lembut); background: var(--kertas); }
.artikel-unggulan .gambar { background: radial-gradient(90% 90% at 30% 20%, #ffe08a, var(--kuning) 55%, #f2b21b); perspective: 800px; }
.artikel-unggulan .gambar svg { transform: rotateY(-18deg) rotateX(10deg) translateZ(20px); filter: drop-shadow(14px 20px 16px rgba(23,37,30,.3)); }
.gabung { border: 1px solid var(--kaca-garis); border-radius: var(--r-besar); box-shadow: var(--bayang-lembut);
  background: linear-gradient(120deg, var(--kuning-muda), var(--kertas) 60%, var(--daun-muda)); }
.kartu-prompt { border-radius: 18px; transition: transform .25s ease, box-shadow .25s ease; }
.kartu-prompt:hover { transform: translateY(-4px); box-shadow: var(--bayang-lembut); }
.hasil { border-radius: var(--r-besar); }
.hasil pre { border-radius: 0; }
.judul-halaman { position: relative; }
.judul-halaman::before {
  content: ""; position: absolute; z-index: -1; right: 0; top: -60px; width: min(520px, 70vw); height: 360px;
  background: radial-gradient(closest-side, color-mix(in srgb, var(--kuning) 35%, transparent), transparent),
              radial-gradient(closest-side at 30% 70%, color-mix(in srgb, var(--daun) 22%, transparent), transparent);
  filter: blur(20px); pointer-events: none;
}
main { isolation: isolate; }

.ubin .contoh { list-style: none; margin: 14px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.ubin .contoh li { font-size: .85rem; font-weight: 700; padding: 5px 10px; border-radius: 999px; background: var(--kertas); border: 1px solid var(--kaca-garis); }
@media (max-width: 900px) { .ubin .contoh { display: none; } }