:root {
  --krem: #faf6ec;
  --kertas: #ffffff;
  --tinta: #1c1917;
  --redup: #57534e;
  --garis: #e7e2d5;
  --rimba: #17452f;
  --rimba-2: #1f5a3d;
  --pucuk: #b7e07a;
  --aksen: #1f5a3d;
  --lembut: color-mix(in srgb, var(--aksen) 10%, white);
  --judul: "Fraunces", Georgia, serif;
  --badan: "Plus Jakarta Sans", system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: 4.5rem; }
body { margin: 0; background: var(--krem); color: var(--tinta); font: 16px/1.65 var(--badan); -webkit-font-smoothing: antialiased; }
h1, h2, h3, h4 { font-family: var(--judul); line-height: 1.2; margin: 0 0 .5em; text-wrap: balance; }
h1 { font-size: clamp(1.9rem, 5vw, 3.2rem); font-weight: 800; }
h2 { font-size: 1.5rem; font-weight: 800; color: var(--rimba); }
h3 { font-size: 1.1rem; font-weight: 600; }
p { margin: 0 0 .8em; }
a { color: var(--aksen); }
main { outline: none; min-height: 70vh; }
:focus-visible { outline: 3px solid var(--aksen); outline-offset: 2px; }

.lebar { max-width: 70rem; margin: 0 auto; padding: 0 1rem; }
.sempit { max-width: 52rem; }
.bagian { padding: 2rem 0 .5rem; }
.lewati { position: absolute; left: -999px; }
.lewati:focus { left: 1rem; top: 1rem; z-index: 99; background: #fff; padding: .5rem 1rem; border-radius: .5rem; }

/* ---------- Kerangka ---------- */
.atas { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--krem) 92%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--garis); }
.atas-isi { display: flex; justify-content: space-between; align-items: center; gap: 1rem; min-height: 3.5rem; }
.merek { font-family: var(--judul); font-weight: 800; font-size: 1.1rem; color: var(--rimba); text-decoration: none; }
.merek, .atas nav a { white-space: nowrap; }
.atas nav { display: flex; gap: 1rem; font-size: .9rem; font-weight: 600; }
@media (max-width: 560px) { .merek { font-size: .9rem; } .atas nav { gap: .6rem; font-size: .78rem; } #tautan-rps { display: none; } }
.atas nav a { color: var(--redup); text-decoration: none; }
.atas nav a:hover { color: var(--rimba); text-decoration: underline; }
.bawah { margin-top: 3rem; padding: 1.5rem 0; border-top: 1px solid var(--garis); font-size: .85rem; color: var(--redup); text-align: center; }
.bawah p { margin: .2rem 0; }

.pilih-bahasa { display: inline-flex; border: 1.5px solid var(--garis); border-radius: 99px; overflow: hidden; background: #fff; }
.pilih-bahasa button { border: 0; background: none; font: 700 .78rem var(--badan); color: var(--redup); padding: .25rem .65rem; cursor: pointer; }
.pilih-bahasa button[aria-pressed="true"] { background: var(--rimba); color: #fff; }
.atas nav { align-items: center; }

/* ---------- Tombol dan komponen kecil ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .4rem; border: 2px solid var(--aksen); background: var(--aksen); color: #fff; font: 600 .9rem var(--badan); padding: .5rem 1.1rem; border-radius: 99px; cursor: pointer; text-decoration: none; transition: transform .15s, box-shadow .15s, background .15s; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 6px 14px rgb(0 0 0 / .14); }
.btn-garis { background: transparent; color: var(--aksen); }
.btn-terang { background: #fff; border-color: #fff; color: var(--rimba); }
.tombol-baris { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .8rem; }
.tab-baris { display: flex; flex-wrap: wrap; gap: .35rem; margin-bottom: .8rem; }
.tab { border: 1.5px solid var(--garis); background: #fff; color: var(--redup); font: 600 .82rem var(--badan); padding: .35rem .8rem; border-radius: 99px; cursor: pointer; transition: background .2s, color .2s; }
.tab.aktif { background: var(--aksen); border-color: var(--aksen); color: #fff; }
.meter { height: .55rem; background: var(--garis); border-radius: 99px; overflow: hidden; }
.meter i { display: block; height: 100%; background: var(--aksen); border-radius: 99px; transition: width .5s ease; }
.meter.rek i { background: #f59e0b; }
.ket { font-size: .92rem; color: var(--redup); }
.label { display: inline-block; font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--redup); margin-right: .4rem; }
.chip { display: inline-block; padding: .1rem .6rem; border-radius: 99px; font-size: .82rem; font-weight: 600; border: 1px solid rgb(0 0 0 / .1); }
.lencana { display: inline-block; background: rgb(255 255 255 / .14); color: var(--pucuk); font-size: .82rem; font-weight: 600; padding: .2rem .8rem; border-radius: 99px; }
.tanda { display: inline-block; background: #fef3c7; color: #92400e; font-size: .72rem; font-weight: 700; padding: .1rem .6rem; border-radius: 99px; margin-bottom: .5rem; }
.peringatan { background: #fef3c7; color: #78350f; padding: .8rem 1rem; border-radius: .8rem; font-size: .9rem; }
.kartu { background: var(--kertas); border: 1px solid var(--garis); border-radius: 1.2rem; padding: 1.2rem; margin-bottom: 1.2rem; box-shadow: 0 2px 10px rgb(28 25 23 / .04); }
.kartu > h3 { color: var(--aksen); }

.muncul { opacity: 0; transform: translateY(18px); transition: opacity .5s ease var(--tunda, 0ms), transform .5s ease var(--tunda, 0ms); }
.muncul.tampak { opacity: 1; transform: none; }

/* ---------- Beranda ---------- */
.hero, .kepala { background: linear-gradient(135deg, #0f2f20, var(--rimba) 55%, var(--aksen)); color: #f5f1e4; padding: 2.5rem 0; }
.hero { padding: 3.5rem 0 4rem; overflow: hidden; }
.hero-isi { display: grid; grid-template-columns: 1fr auto; gap: 2rem; align-items: center; }
.hero h1, .kepala h1 { color: #fff; margin-top: .6rem; }
.hero-teks { max-width: 38rem; font-size: 1.08rem; color: rgb(245 241 228 / .92); }
.hero-dosen { font-size: .9rem; color: rgb(245 241 228 / .8); margin-bottom: 1.4rem; }

.heliks { display: flex; gap: 11px; height: 150px; padding-right: 1rem; }
.heliks span { position: relative; width: 9px; background: linear-gradient(rgb(255 255 255 / 0) 25%, rgb(255 255 255 / .18) 25% 75%, rgb(255 255 255 / 0) 75%) center / 1.5px 100% no-repeat; }
.heliks span::before, .heliks span::after { content: ""; position: absolute; left: 0; top: calc(50% - 4.5px); width: 9px; height: 9px; border-radius: 50%; animation: heliks 2.6s ease-in-out infinite; animation-delay: calc(var(--i) * -.17s); }
.heliks span::before { background: var(--pucuk); }
.heliks span::after { background: #7dd3fc; animation-delay: calc(var(--i) * -.17s - 1.3s); }
@keyframes heliks { 0%, 100% { transform: translateY(-52px) scale(1.1); } 50% { transform: translateY(52px) scale(.55); opacity: .6; } }

.kisi-mk { display: grid; grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr)); gap: 1.1rem; }
.kartu-mk { display: flex; flex-direction: column; background: var(--kertas); border: 1px solid var(--garis); border-top: 5px solid var(--aksen); border-radius: 1.2rem; padding: 1.2rem; color: inherit; text-decoration: none; transition: opacity .5s ease var(--tunda, 0ms), transform .3s ease, box-shadow .3s; }
.kartu-mk.tampak:hover { transform: translateY(-5px); box-shadow: 0 14px 28px rgb(28 25 23 / .12); }
.kartu-mk h3 { font-size: 1.2rem; font-weight: 800; color: var(--aksen); margin-top: .6rem; }
.kartu-ikon { display: grid; place-items: center; width: 3rem; height: 3rem; font-size: 1.6rem; background: var(--lembut); border-radius: 1rem; }
.kartu-mk:hover .kartu-ikon { animation: goyang .6s ease; }
@keyframes goyang { 30% { transform: rotate(-12deg) scale(1.1); } 60% { transform: rotate(10deg) scale(1.1); } }
.kartu-meta { font-size: .85rem; color: var(--redup); margin: 0 0 .2rem; }
.kartu-mk .meter { margin-top: auto; }
.kartu-mk .tanda { align-self: flex-start; margin-top: .4rem; }
.kartu-progres { font-size: .78rem; color: var(--redup); margin: .3rem 0 0; }
.kartu-mk .kartu-meta:last-of-type { margin-bottom: .9rem; }

.kisi-fitur { display: grid; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); gap: 1.1rem; }
.fitur { background: var(--kertas); border: 1px solid var(--garis); border-radius: 1.2rem; padding: 1.2rem; }
.fitur > span { font-size: 1.8rem; }
.fitur p { font-size: .92rem; color: var(--redup); margin: 0; }

/* ---------- Halaman mata kuliah ---------- */
.remah { font-size: .85rem; color: rgb(245 241 228 / .75); margin-bottom: .8rem; }
.remah a { color: #fff; }
.kepala-judul { display: flex; align-items: center; gap: .9rem; }
.kepala-judul h1 { margin: 0; }
.kartu-ikon.besar { background: rgb(255 255 255 / .15); flex: none; }
.keping { display: flex; flex-wrap: wrap; gap: .4rem; margin: 1rem 0 1.2rem; }
.keping span { background: rgb(255 255 255 / .14); padding: .15rem .7rem; border-radius: 99px; font-size: .82rem; }

.dua-kolom { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 2.5rem; align-items: start; }
.samping { font-size: .93rem; }
.samping h3 { margin-top: 1.4rem; color: var(--aksen); }
.cpmk { padding-left: 1.2rem; }
.cpmk li { margin-bottom: .4rem; }
.nilai { list-style: none; padding: 0; }
.nilai li { display: grid; grid-template-columns: 6rem 1fr 2.6rem; gap: .6rem; align-items: center; margin-bottom: .35rem; }
.nilai b { text-align: right; }
details { margin-top: 1.2rem; }
summary { cursor: pointer; font-weight: 600; color: var(--aksen); }
.pustaka { padding-left: 1.2rem; font-size: .88rem; color: var(--redup); }

.linimasa { list-style: none; padding: 0; margin: 0; position: relative; }
.linimasa::before { content: ""; position: absolute; left: 1.45rem; top: 1rem; bottom: 1rem; width: 2px; background: var(--garis); }
.linimasa li { position: relative; margin-bottom: .6rem; }
.topik, .ujian { display: flex; align-items: center; gap: .9rem; padding: .7rem .9rem .7rem .3rem; border-radius: 1rem; }
.topik { background: var(--kertas); border: 1px solid var(--garis); color: inherit; text-decoration: none; transition: transform .2s, box-shadow .2s, border-color .2s; }
.topik:hover { transform: translateX(6px); border-color: var(--aksen); box-shadow: 0 6px 16px rgb(28 25 23 / .08); }
.mg { flex: none; display: grid; place-items: center; min-width: 2.4rem; height: 2.4rem; padding: 0 .3rem; border-radius: 99px; background: var(--aksen); color: #fff; font-weight: 700; font-size: .85rem; position: relative; }
.topik-isi { flex: 1; min-width: 0; }
.topik-isi b { display: block; line-height: 1.3; }
.topik-isi small { color: var(--redup); }
.topik-cek { color: var(--aksen); font-weight: 700; }
.topik.sudah .mg { background: var(--lembut); color: var(--aksen); }
.ujian { color: var(--redup); font-size: .92rem; }
.ujian .mg { background: #d6d3d1; color: #44403c; }

.tab-topik { display: flex; gap: .4rem; margin-top: 1.4rem; margin-bottom: -2.5rem; }
.tab-topik a { padding: .7rem 1.4rem; border-radius: 1rem 1rem 0 0; background: rgb(255 255 255 / .14); color: #fff; font-weight: 700; text-decoration: none; transition: background .2s; }
.tab-topik a:hover { background: rgb(255 255 255 / .26); }
.tab-topik a[aria-current="page"] { background: var(--krem); color: var(--rimba); }

/* ---------- Halaman topik ---------- */
.materi { list-style: none; counter-reset: m; padding: 0; margin: 0; }
.materi li { counter-increment: m; position: relative; background: var(--kertas); border: 1px solid var(--garis); border-left: 4px solid var(--aksen); border-radius: .9rem; padding: .9rem 1rem .9rem 3.2rem; margin-bottom: .6rem; }
.materi li::before { content: counter(m); position: absolute; left: .9rem; top: .9rem; width: 1.6rem; height: 1.6rem; display: grid; place-items: center; background: var(--lembut); color: var(--aksen); border-radius: 50%; font-weight: 700; font-size: .82rem; }
.kaki-topik { display: flex; flex-direction: column; gap: 1rem; align-items: flex-start; padding: 2rem 0 0; }
.sebelum-sesudah { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .6rem; width: 100%; }
.sebelum-sesudah .btn { border-radius: .9rem; text-align: left; }
.anim svg { max-width: 100%; height: auto; display: block; }
.anim text { font-family: var(--badan); }
.anim select, .anim input[type="range"] { accent-color: var(--aksen); }
.anim input[type="range"] { display: block; width: 100%; margin-top: .3rem; }
.lbl { font-size: 9px; fill: var(--redup); text-anchor: middle; }
.sumbu { fill: none; stroke: #78716c; stroke-width: 1.2; }

/* Tahapan / siklus */
.sk { display: grid; grid-template-columns: minmax(0, 15rem) minmax(0, 1fr); gap: 1.4rem; align-items: center; }
.sk-rel { fill: none; stroke: var(--garis); stroke-width: 3; stroke-dasharray: 2 7; stroke-linecap: round; }
.sk-node { cursor: pointer; }
.sk-node circle { fill: #fff; stroke: var(--aksen); stroke-width: 2; transition: fill .3s; }
.sk-node text { text-anchor: middle; font-size: 13px; font-weight: 700; fill: var(--aksen); pointer-events: none; }
.sk-node.lewat circle { fill: var(--lembut); }
.sk-node.aktif circle { fill: var(--aksen); }
.sk-node.aktif text { fill: #fff; }
.sk-kursor { fill: none; stroke: var(--aksen); stroke-width: 2; opacity: .45; transition: transform .7s cubic-bezier(.4, 0, .2, 1); animation: denyut 1.6s ease-in-out infinite; }
@keyframes denyut { 50% { opacity: .12; stroke-width: 6; } }
.sk-besar { text-anchor: middle; font: 800 52px var(--judul); fill: var(--aksen); }
.sk-kecil { text-anchor: middle; font-size: 11px; fill: var(--redup); }
.sk-no { font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--redup); margin: 0; }
.sk-panel h4 { font-size: 1.3rem; color: var(--aksen); margin: .1rem 0 .4rem; }
.sk-isi { min-height: 5.2em; }

/* Punnett */
.pn-judul { font-weight: 700; margin: 0; }
.pn-induk { display: flex; flex-wrap: wrap; align-items: end; gap: .8rem; margin: .8rem 0; }
.pn-induk label { font-size: .8rem; font-weight: 600; color: var(--redup); display: grid; gap: .2rem; }
.pn-induk select { font: 700 1rem var(--badan); padding: .4rem .7rem; border: 1.5px solid var(--garis); border-radius: .7rem; background: #fff; }
.pn-kali { font-size: 1.4rem; font-weight: 700; color: var(--aksen); padding-bottom: .3rem; }
.pn-gulir, .dn-gulir, .fg-gulir { overflow-x: auto; padding-bottom: .3rem; }
.pn-kisi { display: grid; gap: 4px; max-width: 32rem; min-width: 17rem; }
.pn-kepala, .pn-pojok { display: grid; place-items: center; background: #f5f5f4; border-radius: .5rem; padding: .4rem; font-weight: 700; font-size: .9rem; }
.pn-pojok { font-weight: 500; font-size: .7rem; color: var(--redup); }
.pn-sel { display: grid; place-items: center; text-align: center; border-radius: .5rem; padding: .45rem .2rem; border: 1px solid rgb(0 0 0 / .08); animation: letup .4s cubic-bezier(.3, 1.4, .5, 1) both; }
.pn-sel b { font-size: .9rem; }
.pn-sel small { font-size: .64rem; line-height: 1.2; }
@keyframes letup { from { opacity: 0; transform: scale(.4); } }
.pn-hasil { margin-top: 1rem; font-size: .92rem; }
.pn-hasil p { margin-bottom: .4rem; }

/* DNA */
.dn-pita { display: grid; grid-template-columns: 6.8rem repeat(15, 1.75rem); gap: 3px; width: max-content; padding: .3rem 0; }
.dn-label { font-size: .7rem; font-weight: 600; color: var(--redup); align-self: center; white-space: nowrap; }
.bs { display: grid; place-items: center; width: 1.75rem; height: 1.75rem; border-radius: .4rem; color: #fff; font: 700 .85rem ui-monospace, Menlo, monospace; transition: transform .45s ease, opacity .45s ease; }
.bs-A { background: #16a34a; } .bs-T { background: #dc2626; } .bs-U { background: #ea580c; } .bs-G { background: #2563eb; } .bs-C { background: #a16207; }
.bs.baru { opacity: 0; transform: scale(.3); }
.bs.baru.buka { opacity: 1; transform: none; }
.dn-replikasi .bs.atas { transform: translateY(calc(1.75rem + 3px)); }
.dn-replikasi .bs.bawah { transform: translateY(calc(-1.75rem - 3px)); }
.dn-replikasi .bs.lama.buka { transform: none; }
.bs.redup { opacity: .35; }
.dn-aa { grid-column: span 3; display: grid; place-items: center; height: 1.75rem; border-radius: 99px; background: var(--aksen); color: #fff; font: 700 .78rem var(--badan); font-style: normal; opacity: 0; transform: translateY(-8px); transition: opacity .4s, transform .4s; }
.dn-aa.buka { opacity: 1; transform: none; }
.dn-status { min-height: 3.2em; margin-top: .6rem; }

/* Mitosis */
.mt { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 1.2rem; align-items: center; }
.mt-sel { fill: color-mix(in srgb, var(--aksen) 7%, white); stroke: var(--aksen); stroke-width: 2; transform-box: fill-box; transform-origin: center; transition: transform 1s ease; }
.mt-krom { transition: transform 1s ease, opacity 1s ease; }
.mt-k0 { fill: #7c3aed; } .mt-k1 { fill: #ea580c; }
.mt-inti { fill: rgb(120 113 108 / .12); stroke: #78716c; stroke-dasharray: 4 3; transition: opacity .8s ease, transform 1s ease; }
.mt-spindel { transition: opacity .8s ease; }
.mt-spindel path { fill: none; stroke: #a8a29e; stroke-width: 1; }
.mt-ket { min-height: 6.5em; }

/* Membran */
.mb canvas { width: 100%; height: auto; border-radius: .8rem; border: 1px solid var(--garis); display: block; }
.mb-hitung { display: flex; flex-wrap: wrap; gap: 1.2rem; margin: .7rem 0; font-size: .92rem; }
.mb-hitung b { font-size: 1.15rem; color: var(--aksen); font-variant-numeric: tabular-nums; }

/* Enzim */
.ez-atur { display: grid; grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr)); gap: 1rem; font-size: .9rem; font-weight: 600; }
.ez-gambar { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 1rem; align-items: center; margin: 1rem 0; }
.ez-badan { fill: var(--aksen); transform-box: fill-box; transform-origin: center; transition: transform .6s ease, fill .6s ease; }
.ez-celah { fill: var(--kertas); transform-box: fill-box; transform-origin: center; transition: transform .6s ease; }
.ez-teks { text-anchor: middle; font-size: 11px; font-weight: 700; fill: #fff; }
.ez-substrat, .ez-produk { fill: #f59e0b; animation: var(--dur, 1.3s) linear infinite; }
.ez-substrat { animation-name: ez-masuk; }
.ez-p1 { animation-name: ez-keluar-atas; } .ez-p2 { animation-name: ez-keluar-bawah; }
@keyframes ez-masuk { 0% { transform: translateX(-125px); opacity: 1; } 50%, 62% { transform: none; opacity: 1; } 63%, 100% { transform: none; opacity: 0; } }
@keyframes ez-keluar-atas { 0%, 62% { opacity: 0; transform: none; } 63% { opacity: 1; transform: none; } 100% { opacity: 0; transform: translate(-95px, -30px); } }
@keyframes ez-keluar-bawah { 0%, 62% { opacity: 0; transform: none; } 63% { opacity: 1; transform: none; } 100% { opacity: 0; transform: translate(-95px, 30px); } }
@keyframes ez-pantul { 0%, 100% { transform: translateX(-125px); } 50% { transform: translateX(-16px); } }
.ez-adegan.rusak .ez-badan { fill: #a8a29e; transform: scale(1.1, .78) rotate(8deg); }
.ez-adegan.rusak .ez-celah { transform: scale(.6, .3); }
.ez-adegan.rusak .ez-substrat { animation-name: ez-pantul; animation-duration: 2.4s; animation-timing-function: ease-in-out; opacity: 1; }
.ez-adegan.rusak .ez-produk { animation: none; opacity: 0; }
.ez-adegan.diam:not(.rusak) .ez-substrat, .ez-adegan.diam:not(.rusak) .ez-produk { animation-play-state: paused; }
.ez-garis { fill: none; stroke: var(--aksen); stroke-width: 2.5; }
.ez-titik { fill: #f59e0b; stroke: #fff; stroke-width: 2; }
.ez-laju { display: grid; grid-template-columns: 1fr auto; gap: .8rem; align-items: center; font-size: .9rem; margin-bottom: .6rem; }

/* Kurva pertumbuhan */
.tb { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 1.2rem; align-items: center; }
.tb-bayang { fill: none; stroke: #a8a29e; stroke-width: 1.5; stroke-dasharray: 3 3; }
.tb-garis { fill: none; stroke: var(--aksen); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.tb-titik { fill: var(--aksen); stroke: #fff; stroke-width: 2; }
.tb-geser, .ps-geser, .pg-geser { display: block; font-size: .9rem; font-weight: 600; }
.tb-fase { display: inline-block; font-weight: 700; padding: .15rem .8rem; border-radius: 99px; margin: .8rem 0 .4rem; }
.tb-panel .ket { min-height: 6.5em; }
.tb-angka b { color: var(--aksen); font-size: 1.1rem; }

/* Pohon filogenetik */
.fg svg { min-width: 30rem; }
.fg-cabang { fill: none; stroke: var(--aksen); stroke-width: 2; stroke-linecap: round; stroke-dasharray: 1; stroke-dashoffset: 1; animation: fg-garis .5s ease forwards; }
@keyframes fg-garis { to { stroke-dashoffset: 0; } }
.fg-klad { font-size: 8px; font-style: italic; fill: var(--redup); opacity: 0; animation: fg-muncul .4s ease forwards; }
.fg-daun { cursor: pointer; opacity: 0; animation: fg-muncul .4s ease forwards; }
@keyframes fg-muncul { to { opacity: 1; } }
.fg-daun circle { fill: var(--aksen); transition: r .2s; }
.fg-daun text { font-size: 12px; fill: var(--tinta); }
.fg-daun:hover text, .fg-daun.aktif text { fill: var(--aksen); font-weight: 700; }
.fg-daun.aktif circle { r: 7px; }
.fg-info { background: var(--lembut); border-radius: .9rem; padding: .9rem 1rem; margin-top: .8rem; }
.fg-info h4 { color: var(--aksen); margin-bottom: .2rem; }
.fg-info p { margin: 0; color: var(--tinta); }
.fg-catatan { font-size: .8rem; margin: .6rem 0 0; }

/* Pindah silang */
.ps svg { max-width: 30rem; margin: .6rem 0; }
.ps-k1 { fill: #2563eb; } .ps-k2 { fill: #dc2626; }
.ps-ujung { transition: transform .9s cubic-bezier(.5, 0, .3, 1); }
.ps-ujung.turun { transform: translateY(50px); }
.ps-ujung.naik { transform: translateY(-50px); }
.ps-gen { fill: #fff; stroke: var(--tinta); stroke-width: 1.5; }
.ps-huruf { text-anchor: middle; font-size: 11px; font-weight: 700; }
.ps-titik { stroke: #78716c; stroke-dasharray: 3 3; }
.ps-gamet { display: grid; gap: .35rem; margin: 1rem 0 .6rem; max-width: 30rem; }
.ps-baris { display: grid; grid-template-columns: 7.5rem 1fr 3.4rem; gap: .6rem; align-items: center; font-weight: 700; font-size: .9rem; }
.ps-baris small { font-weight: 500; color: var(--redup); }
.ps-baris b { text-align: right; font-variant-numeric: tabular-nums; }

/* Poligenik */
.pg-batang { display: flex; align-items: flex-end; gap: 4px; height: 165px; margin-top: 1rem; border-bottom: 2px solid #78716c; }
.pg-kol { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; min-width: 0; }
.pg-kol i { width: 100%; background: var(--aksen); border-radius: .3rem .3rem 0 0; transform-origin: bottom; animation: pg-naik .45s ease both; }
@keyframes pg-naik { from { transform: scaleY(0); } }
.pg-kol small { font-size: .65rem; color: var(--redup); }
.pg-kol span { font-size: .7rem; font-weight: 700; order: 3; position: relative; top: 1.3rem; height: 0; }
.pg-sumbu { text-align: center; font-size: .78rem; color: var(--redup); margin: 1.6rem 0 .6rem; }

/* ---------- LKPD ---------- */
.lkpd { background: var(--kertas); border: 1px solid var(--garis); border-radius: 1.2rem; padding: clamp(1rem, 4vw, 2rem); box-shadow: 0 2px 10px rgb(28 25 23 / .04); }
.lkpd header { border-bottom: 3px double var(--aksen); padding-bottom: .8rem; margin-bottom: 1rem; text-align: center; }
.lkpd header p { margin: 0; color: var(--redup); font-size: .9rem; }
.lkpd-no { font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--aksen) !important; }
.lkpd h2 { margin: .2rem 0; }
.lkpd h3 { color: var(--aksen); margin-top: 1.3rem; }
.lkpd-identitas { display: grid; grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr)); gap: .7rem; }
.lkpd label { font-size: .88rem; font-weight: 600; }
.lkpd-identitas label { display: grid; gap: .2rem; color: var(--redup); }
.lkpd input, .lkpd textarea { width: 100%; font: 400 .95rem/1.5 var(--badan); color: var(--tinta); padding: .5rem .7rem; border: 1.5px solid var(--garis); border-radius: .6rem; background: #fffdf7; resize: vertical; }
.lkpd input:focus, .lkpd textarea:focus { outline: none; border-color: var(--aksen); box-shadow: 0 0 0 3px color-mix(in srgb, var(--aksen) 20%, transparent); }
.lkpd ul, .lkpd ol { padding-left: 1.3rem; margin: 0 0 .5rem; }
.lkpd .alat { columns: 2 12rem; }
.lkpd-tanya li { margin-bottom: .8rem; }
.lkpd-tanya label { display: block; margin-bottom: .3rem; font-weight: 500; font-size: .95rem; }
.lkpd-aksi { display: flex; flex-wrap: wrap; align-items: center; gap: .7rem; margin-top: 1.4rem; }
.lkpd-status { font-size: .82rem; color: var(--redup); }

/* ---------- Bagian materi sebagai kartu ---------- */
.kisi-bagian { display: grid; grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); gap: 1rem; }
.kartu-bagian { display: flex; flex-direction: column; align-items: flex-start; gap: .45rem; text-align: left; background: var(--kertas); border: 1px solid var(--garis); border-top: 4px solid var(--aksen); border-radius: 1.1rem; padding: 1.1rem; font: inherit; color: inherit; cursor: pointer; box-shadow: 0 2px 10px rgb(28 25 23 / .04); transition: transform .25s ease, box-shadow .25s ease; animation: letup .4s cubic-bezier(.3, 1.3, .5, 1) both; animation-delay: var(--tunda, 0ms); }
.kartu-bagian:hover { transform: translateY(-5px); box-shadow: 0 14px 26px rgb(28 25 23 / .12); }
.kartu-no { display: grid; place-items: center; width: 2.2rem; height: 2.2rem; border-radius: 50%; background: var(--lembut); color: var(--aksen); font-weight: 800; }
.kartu-bagian:hover .kartu-no { background: var(--aksen); color: #fff; }
.kartu-bagian b { font: 800 1.08rem/1.25 var(--judul); color: var(--aksen); }
.kartu-ringkas { font-size: .86rem; line-height: 1.45; color: var(--redup); }
.kartu-isi { margin-top: auto; padding-top: .3rem; font-size: .74rem; font-weight: 700; color: var(--aksen); }
.nav-bagian { position: sticky; top: 3.5rem; z-index: 10; display: flex; gap: .4rem; overflow-x: auto; padding: .7rem 1rem; margin: 0 -1rem 1rem; background: color-mix(in srgb, var(--krem) 94%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--garis); scrollbar-width: thin; }
.nav-bagian button { flex: none; border: 1.5px solid var(--garis); background: #fff; color: var(--redup); font: 600 .82rem var(--badan); padding: .4rem .9rem; border-radius: 99px; cursor: pointer; white-space: nowrap; transition: background .2s, color .2s, border-color .2s; }
.nav-bagian button:hover { border-color: var(--aksen); color: var(--aksen); }
.nav-bagian button[aria-current] { background: var(--aksen); border-color: var(--aksen); color: #fff; }
.nav-bagian .nav-semua { position: sticky; left: 0; z-index: 1; border-color: var(--aksen); color: var(--aksen); font-weight: 700; box-shadow: 6px 0 10px -4px rgb(28 25 23 / .25); }
.panel:not([hidden]) { animation: panel-masuk .3s ease; }
@keyframes panel-masuk { from { opacity: 0; transform: translateY(10px); } }
.panel-no { font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .07em; color: var(--redup); margin: 0 0 .6rem; }
.panel-kaki { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .6rem; margin: .4rem 0 1rem; }
.panel-kaki .btn { border-radius: .9rem; text-align: left; }
#materi { scroll-margin-top: 3.5rem; }
.ref li { scroll-margin-top: 8rem; }

/* ---------- Materi lengkap dan referensi ---------- */
.sub { font-size: .8rem; font-family: var(--badan); font-weight: 700; text-transform: uppercase; letter-spacing: .07em; color: var(--redup); margin: 1.6rem 0 .7rem; }
.uraian p { margin-bottom: .9em; }
.uraian p:last-child { margin-bottom: 0; }
.uraian a[data-gulir] { text-decoration: none; border-bottom: 1px dotted var(--aksen); }
.uraian a[data-gulir]:hover { background: var(--lembut); }
.ref { padding-left: 1.4rem; font-size: .9rem; }
.ref li { margin-bottom: .7rem; padding: .2rem .4rem; border-radius: .4rem; overflow-wrap: anywhere; transition: background .4s; }
.ref li.sorot { background: #fef08a; }
.ref .tanda, .ket .tanda { margin: 0; }
.tanda.oa { background: #dcfce7; color: #166534; }
.tanda.baru { background: #dbeafe; color: #1e40af; }
.tanda.id { background: #fee2e2; color: #991b1b; }
.galeri { display: grid; gap: 1rem; margin: 1rem 0 1.2rem; }
.galeri-2 { grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }
.galeri-3 { grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr)); }
.galeri-1 { max-width: 46rem; margin-inline: auto; }
.gbr, .video { margin: 0; }
.gbr img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: .8rem; border: 1px solid var(--garis); display: block; transition: transform .3s; }
.galeri-1 .gbr img, .galeri-2 .gbr img { aspect-ratio: auto; max-height: 30rem; object-fit: contain; background: #fff; }
.zoom:hover img { transform: scale(1.02); }
figcaption { font-size: .82rem; line-height: 1.45; margin-top: .45rem; color: var(--tinta); }
.kredit { display: block; color: var(--redup); font-size: .76rem; margin-top: .15rem; }
.video-sampul { display: block; width: 100%; aspect-ratio: 16 / 9; border: 0; border-radius: .8rem; overflow: hidden; background: #000; }
.video-sampul { position: relative; }
.video-sampul img { width: 100%; height: 100%; object-fit: cover; opacity: .85; transition: opacity .2s; }
.video-sampul:hover img { opacity: 1; }
.video-sampul span { position: absolute; inset: 0; margin: auto; width: 4rem; height: 2.8rem; display: grid; place-items: center; background: #dc2626; color: #fff; border-radius: .8rem; font-size: 1.2rem; }
.zoom { display: block; width: 100%; padding: 0; border: 0; background: none; cursor: zoom-in; border-radius: .8rem; }
button.video-sampul { padding: 0; cursor: pointer; }
.sisip-anim { background: color-mix(in srgb, var(--aksen) 5%, white); border: 1px dashed color-mix(in srgb, var(--aksen) 40%, white); border-radius: 1rem; padding: 1rem; margin: 1rem 0 1.2rem; }
.kartu > .sisip-anim { background: none; border: 0; padding: 0; margin: 0; }
.sisip-anim h4 { color: var(--aksen); font-size: 1.1rem; margin-bottom: .8rem; }
.sisip-anim > .label { margin: 0 0 .1rem; }

#pop { border: 0; padding: 0; background: transparent; max-width: min(96vw, 72rem); max-height: 96vh; overflow: visible; }
#pop::backdrop { background: rgb(15 23 20 / .86); backdrop-filter: blur(3px); }
#pop[open] { display: flex; flex-direction: column; align-items: center; animation: letup .25s ease; }
.pop-isi img { display: block; max-width: min(96vw, 72rem); max-height: 78vh; border-radius: .6rem; background: #fff; }
.pop-isi iframe { display: block; width: min(92vw, 64rem); aspect-ratio: 16 / 9; max-height: 78vh; border: 0; border-radius: .6rem; background: #000; }
.pop-ket { color: #f5f1e4; font-size: .82rem; line-height: 1.45; max-width: 60rem; max-height: 14vh; overflow-y: auto; margin: .6rem 0 0; text-align: center; }
.pop-ket a { color: var(--pucuk); }
.pop-ket .kredit { color: rgb(245 241 228 / .75); }
.pop-tutup { position: fixed; top: .8rem; right: .8rem; width: 2.6rem; height: 2.6rem; border-radius: 50%; border: 0; background: #fff; color: var(--tinta); font-size: 1.1rem; cursor: pointer; box-shadow: 0 4px 14px rgb(0 0 0 / .4); }
.pop-pesan { background: #fff; color: var(--tinta); border-radius: 1rem; padding: 1.5rem; max-width: 32rem; }
.studi, .langkah-id { padding-left: 1.2rem; margin: 0 0 .9em; }
.studi li, .langkah-id li { margin-bottom: .7rem; }

/* ---------- LKPD proyek ---------- */
.fase { border-top: 1px solid var(--garis); margin-top: 1.4rem; }
.fase h3 span { display: inline-block; background: var(--aksen); color: #fff; font: 700 .72rem var(--badan); text-transform: uppercase; letter-spacing: .06em; padding: .15rem .6rem; border-radius: 99px; vertical-align: middle; margin-right: .3rem; }
.lkpd-label { display: block; margin: .9rem 0 .3rem; font-weight: 600; font-size: .92rem; }
.lkpd-gulir { overflow-x: auto; }
.lkpd-tabel { width: 100%; border-collapse: collapse; font-size: .88rem; }
.lkpd-tabel th { background: var(--lembut); color: var(--aksen); text-align: left; font-weight: 700; }
.lkpd-tabel th, .lkpd-tabel td { border: 1px solid var(--garis); padding: .35rem .5rem; }
.lkpd-tabel td:has(input) { padding: 0; min-width: 6rem; }
.lkpd-tabel input { border: 0; border-radius: 0; background: transparent; padding: .4rem .5rem; }
.lkpd-tabel.rubrik td:last-child { text-align: right; font-weight: 700; }

/* ---------- Layar kecil ---------- */
@media (max-width: 760px) {
  .dua-kolom, .sk, .mt, .tb { grid-template-columns: minmax(0, 1fr); gap: 1rem; }
  .sk-gambar { max-width: 15rem; margin: 0 auto; }
  .hero-isi { grid-template-columns: 1fr; }
  .heliks { height: 110px; overflow: hidden; }
  .sebelum-sesudah .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
  .muncul { opacity: 1; transform: none; }
}

/* ---------- Cetak: hanya LKPD ---------- */
@media print {
  .tak-cetak { display: none !important; }
  body { background: #fff; font-size: 11pt; }
  .lebar { max-width: none; padding: 0; }
  .bagian { padding: 0; }
  .lkpd { border: 0; box-shadow: none; padding: 0; }
  .lkpd input, .lkpd textarea { background: #fff; border-color: #999; }
  .lkpd textarea { min-height: 5.5em; }
  .lkpd h3, .lkpd-tanya li, .lkpd-tabel tr { break-inside: avoid; }
  .lkpd-tabel th, .lkpd-tabel td { border-color: #999; }
}