:root{--papan:#1f3a2d;--papan-gelap:#172c22;--kapur:#f8fafc;--kapur-k:#fde68a;--kertas:#fbfaf5;--tinta:#1c1917;--kayu:#8a5a32;--kayu-muda:#b98553;--hijau-t:#2e6a4a;--hijau-t2:#245a3d;--abu:#57534e;--garis:#e7e2d3;--merah:#9f2d20}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--kertas);color:var(--tinta);font-family:"Karla",system-ui,sans-serif;font-size:17px;line-height:1.7}
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--hijau-t2);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:#0f3d26}
.lompat{position:absolute;left:-999px;top:0;background:var(--kapur-k);padding:8px 12px;z-index:9}
.lompat:focus{left:8px}
/* rel kayu atas */
.rel{background:linear-gradient(180deg,var(--kayu-muda),var(--kayu));border-bottom:3px solid #6d4526;color:#fff8ec}
.rel-isi{max-width:1160px;margin:0 auto;padding:8px 16px;display:flex;flex-wrap:wrap;align-items:center;gap:6px 18px}
.merek{display:inline-flex;align-items:center;gap:10px;color:#fff8ec;text-decoration:none;min-height:44px}
.merek b{font-family:"Caveat Brush",cursive;font-weight:400;font-size:28px;letter-spacing:.5px}
.merek svg{width:38px;height:38px}
.laci{display:flex;flex-wrap:wrap;gap:2px 4px;list-style:none;margin:0;padding:0}
.laci a{display:inline-flex;align-items:center;min-height:40px;padding:0 10px;border-radius:8px;color:#fff8ec;text-decoration:none;font-size:15.5px;font-weight:600}
.laci a:hover,.laci a[aria-current]{background:rgba(31,58,45,.55)}
/* papan tulis */
.papan{position:relative;background:radial-gradient(ellipse at 20% 10%,rgba(255,255,255,.06),transparent 55%),radial-gradient(ellipse at 85% 90%,rgba(255,255,255,.04),transparent 50%),var(--papan);color:var(--kapur);border:10px solid var(--kayu);border-radius:8px;box-shadow:inset 0 0 0 2px #6d4526,inset 0 0 40px rgba(0,0,0,.35),0 3px 0 #6d4526}
.papan-besar{max-width:1160px;margin:18px auto 0;padding:18px 20px 22px}
.jejak{font-size:14px;margin:0 0 6px;color:#d9e4dc}
.jejak ol{list-style:none;display:flex;flex-wrap:wrap;margin:0;padding:0;gap:0}
.jejak li+li::before{content:"/";margin:0 8px;color:var(--kapur-k)}
.jejak a{color:#e8efe9}
.papan h1{font-family:"Caveat Brush",cursive;font-weight:400;color:var(--kapur-k);font-size:clamp(32px,5.4vw,52px);line-height:1.12;margin:4px 0 14px;text-shadow:0 0 1px rgba(253,230,138,.6)}
.papan-grid{display:grid;grid-template-columns:minmax(0,3fr) minmax(0,2fr);gap:18px;align-items:center}
.papan-grid .kapur-svg{width:100%}
.coretan{list-style:none;margin:0;padding:0;font-family:"Caveat Brush",cursive;font-size:22px;line-height:1.35}
.coretan li{padding:6px 0 6px 30px;position:relative;border-bottom:1px dashed rgba(248,250,252,.22)}
.coretan li::before{content:"✎";position:absolute;left:2px;top:6px;color:var(--kapur-k)}
.coretan li:last-child{border-bottom:0}
.baki{height:12px;margin:14px -20px -22px;background:linear-gradient(180deg,#a47145,#7b4f2b);border-radius:0 0 3px 3px}
.baki i{display:inline-block;width:46px;height:7px;margin:2px 0 0 36px;background:#f1efe9;border-radius:3px}
.baki i+i{width:30px;margin-left:12px;background:var(--kapur-k)}
/* kertas */
.kertas{max-width:780px;margin:0 auto;padding:26px 16px 30px}
.kertas h2{font-family:"Caveat Brush",cursive;font-weight:400;font-size:33px;line-height:1.15;color:var(--papan);margin:38px 0 10px}
.kertas h3{font-size:19.5px;margin:26px 0 6px;color:#28251f}
.kertas p,.kertas li{margin:0 0 14px}
.kertas ul,.kertas ol{padding-left:22px}
.pembuka{font-size:19px;color:#2b2723}
.awas{border:2px dashed var(--merah);border-radius:8px;background:#fff5f2;padding:12px 14px 12px 16px;margin:18px 0 22px;font-size:15.5px;line-height:1.6}
.awas strong{color:var(--merah);display:block;font-size:14px;letter-spacing:.8px;text-transform:uppercase}
.awas p{margin:4px 0 0}
.gulir{overflow-x:auto;margin:6px 0 20px;border:1px solid var(--garis);border-radius:8px;background:#fff}
table{border-collapse:collapse;width:100%;font-size:15.5px;min-width:420px}
caption{caption-side:top;text-align:left;padding:10px 12px 4px;font-size:14px;color:var(--abu)}
th,td{padding:8px 12px;border-bottom:1px solid var(--garis);text-align:left;vertical-align:top}
th{background:#f1eee3;font-weight:700}
td.ang,th.ang{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
.gambar{margin:24px 0}
.gambar img{width:100%;border-radius:8px;border:4px solid var(--kayu-muda)}
.gambar figcaption{font-size:14px;color:var(--abu);margin-top:6px}
.kotak-rumus{background:var(--papan);color:var(--kapur);border-radius:8px;padding:12px 16px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:15px;line-height:1.75;margin:10px 0 20px;overflow-x:auto;border-left:6px solid var(--kapur-k)}
.kotak-rumus span{color:var(--kapur-k)}
.cek{list-style:none;padding-left:0}
.cek li{padding-left:30px;position:relative}
.cek li::before{content:"☐";position:absolute;left:4px;top:-1px;color:var(--hijau-t);font-size:18px}
.tanya h3{margin-top:18px}
.tombol{display:inline-flex;align-items:center;min-height:44px;padding:0 18px;background:var(--hijau-t);color:#fff;text-decoration:none;border-radius:8px;font-weight:700;border-bottom:3px solid #1b4731}
.tombol:hover{background:var(--hijau-t2);color:#fff}
.lanjut{margin:30px 0 0;padding:16px;border-top:3px double var(--garis)}
.lanjut p{margin:0 0 10px}
.samping{max-width:780px;margin:0 auto 34px;padding:0 16px}
.samping-isi{border:2px solid var(--garis);border-radius:8px;padding:12px 16px;background:#fff}
.samping-isi p{margin:0 0 6px;font-weight:700}
.samping-isi ul{margin:0;padding-left:0;list-style:none}
.samping-isi li a{display:inline-flex;align-items:center;min-height:36px}
.catatan-kecil{font-size:14.5px;color:var(--abu)}
/* kaki */
.kaki{background:var(--papan-gelap);color:#dfe8e1;border-top:8px solid var(--kayu);margin-top:20px}
.kaki-isi{max-width:1160px;margin:0 auto;padding:22px 16px 26px;display:grid;grid-template-columns:2fr 1fr 1fr;gap:22px}
.kaki-judul{font-family:"Caveat Brush",cursive;font-size:24px;color:var(--kapur-k);margin:0 0 6px}
.kaki ul{list-style:none;margin:0;padding:0}
.kaki li a{display:inline-flex;align-items:center;min-height:34px;color:#eef3ef;font-size:15px}
.kaki p{font-size:14.5px;margin:0 0 10px}
.kaki-bawah{grid-column:1/-1;border-top:1px dashed rgba(248,250,252,.25);padding-top:12px;font-size:14px}
/* beranda: dinding kelas */
.dinding{background:repeating-linear-gradient(90deg,#efe6d2 0 38px,#ece2cc 38px 76px);padding:22px 0 30px;border-bottom:26px solid #c9b48f;box-shadow:inset 0 -6px 0 #b39c74}
.dinding-isi{max-width:1160px;margin:0 auto;padding:0 16px}
.spanduk{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:22px;align-items:center;margin-bottom:24px}
.spanduk h1{font-family:"Caveat Brush",cursive;font-weight:400;font-size:clamp(34px,5.2vw,56px);line-height:1.08;color:var(--papan);margin:0 0 10px}
.spanduk p{font-size:18px;margin:0 0 12px}
.spanduk img{border-radius:8px;border:8px solid var(--kayu);box-shadow:0 4px 0 #6d4526}
.enam{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;list-style:none;margin:0;padding:0}
.papan-kecil{padding:12px 14px 14px;display:flex;flex-direction:column;border-width:8px}
.papan-kecil .no{font-family:"Caveat Brush",cursive;color:var(--kapur-k);font-size:20px}
.papan-kecil h2{font-family:"Caveat Brush",cursive;font-weight:400;font-size:28px;line-height:1.1;margin:2px 0 8px;color:var(--kapur)}
.papan-kecil p{margin:8px 0 12px;font-size:15.5px;line-height:1.55;color:#e4ece6}
.papan-kecil .tombol{margin-top:auto;align-self:flex-start;background:#3c8a5e;border-bottom-color:#256842}
.meja{max-width:1160px;margin:0 auto;padding:28px 16px 10px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px}
.meja h2{font-family:"Caveat Brush",cursive;font-weight:400;font-size:34px;color:var(--papan);margin:0 0 10px}
.jadwal{counter-reset:j;list-style:none;padding:0;margin:0}
.jadwal li{counter-increment:j;position:relative;padding:10px 0 10px 54px;border-bottom:1px solid var(--garis)}
.jadwal li::before{content:counter(j);position:absolute;left:0;top:10px;width:38px;height:38px;border-radius:50%;background:var(--papan);color:var(--kapur-k);font-family:"Caveat Brush",cursive;font-size:22px;display:flex;align-items:center;justify-content:center}
.rak{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;list-style:none;padding:0;margin:0}
.rak li{background:#fff;border:2px solid var(--garis);border-left:8px solid var(--kayu-muda);border-radius:8px;padding:10px 12px}
.rak a{font-weight:700;display:inline-flex;min-height:28px;align-items:center}
.rak span{display:block;font-size:14.5px;color:var(--abu)}
@media (max-width:860px){.papan-grid,.spanduk,.meja{grid-template-columns:minmax(0,1fr)}.enam{grid-template-columns:repeat(2,minmax(0,1fr))}.kaki-isi{grid-template-columns:1fr 1fr}.kaki-isi>div:first-child{grid-column:1/-1}}
@media (max-width:560px){body{font-size:16.5px}.enam,.rak{grid-template-columns:minmax(0,1fr)}.papan{border-width:7px}.papan-besar{margin:10px 8px 0;padding:14px 12px 18px}.baki{margin:12px -12px -18px}.kertas h2{font-size:29px}.laci a{padding:0 8px;font-size:15px}.kaki-isi{grid-template-columns:1fr}.coretan{font-size:20px}}