:root{
    --paper:#faf5ec; --card:#fffdf8; --ink:#3d2c4d; --muted:#8a7a9b;
    --coral:#e8604c; --teal:#2a9d8f; --gold:#d9a441; --line:#e5dccb;
  }
  *{margin:0;padding:0;box-sizing:border-box;font-family:'Segoe UI',system-ui,sans-serif}
  body{background:var(--paper);color:var(--ink);min-height:100vh;
    display:flex;flex-direction:column;align-items:center;justify-content:center;padding:26px 16px}
  .deck{width:100%;max-width:900px}
  .slide{display:none;background:var(--card);border:1px solid var(--line);
    border-radius:24px;padding:52px 58px;box-shadow:0 24px 60px rgba(61,44,77,.10);
    position:relative;overflow:hidden}
  .slide.aktif{display:block}
  .slide.aktif.dari-kanan{animation:geserKanan .5s cubic-bezier(.22,1,.36,1)}
  .slide.aktif.dari-kiri{animation:geserKiri .5s cubic-bezier(.22,1,.36,1)}
  @keyframes geserKanan{from{opacity:0;transform:translateX(90px) scale(.97)}to{opacity:1;transform:none}}
  @keyframes geserKiri{from{opacity:0;transform:translateX(-90px) scale(.97)}to{opacity:1;transform:none}}

  .kicker{font-size:12px;letter-spacing:4px;color:var(--coral);font-weight:700;margin-bottom:14px}
  h1{font-size:40px;line-height:1.15;margin-bottom:10px}
  h2{font-size:30px;margin-bottom:8px}
  .sub{color:var(--muted);font-size:16px;margin-bottom:30px;max-width:60ch}
  .garis{width:64px;height:5px;border-radius:3px;background:var(--coral);margin-bottom:22px}
  .definisi{font-size:21px;line-height:1.65;margin-bottom:28px}
  .definisi em{color:var(--coral);font-style:normal;font-weight:700}
  .poin3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
  .poin{border-top:3px solid var(--teal);padding-top:14px}
  .poin:nth-child(2){border-color:var(--coral)}
  .poin:nth-child(3){border-color:var(--gold)}
  .poin b{display:block;font-size:15px;margin-bottom:6px}
  .poin p{color:var(--muted);font-size:13.5px;line-height:1.6}
  .sumber{margin-top:26px;font-size:12.5px;line-height:1.7;color:var(--muted)}

  /* ===== SLIDE 3: TOPOLOGI ===== */
  .topo{position:relative;height:230px;margin:6px 0 4px;
    background:var(--paper);border:1px solid var(--line);border-radius:16px;overflow:hidden}
  .topo svg{position:absolute;inset:0;width:100%;height:100%}
  .srv{position:absolute;top:50%;transform:translate(-50%,-50%);
    background:var(--ink);color:#f0e8f7;border-radius:12px;padding:12px 18px;text-align:center;min-width:96px}
  .srv b{display:block;font-size:14px}
  .srv span{font-size:10.5px;opacity:.65;font-family:Consolas,monospace}
  .srv.a{left:14%;} .srv.b{left:86%;}
  .router{position:absolute;left:50%;transform:translate(-50%,-50%);
    background:var(--card);border:2px solid var(--ink);border-radius:10px;
    padding:8px 16px;font-weight:800;font-size:14px}
  .router small{display:block;font-size:9px;font-weight:600;letter-spacing:1px;color:var(--muted);text-align:center}
  .r1{top:24%} .r2{top:76%}
  .rlabel{position:absolute;font-family:Consolas,monospace;font-size:10.5px;color:var(--muted)}
  .rl1{top:9%;left:22%} .rl2{top:9%;right:22%;text-align:right}
  .rl3{bottom:9%;left:22%} .rl4{bottom:9%;right:22%;text-align:right}
  .jlabel{position:absolute;font-size:10px;letter-spacing:1.5px;font-weight:700}
  .jlabel.l1{top:47%;left:50%;transform:translate(-50%,-170%);color:var(--teal)}
  .jlabel.l2{top:53%;left:50%;transform:translate(-50%,70%);color:var(--gold)}
  .pkecil{position:absolute;top:50%;width:30px;height:16px;margin-top:-8px;border-radius:8px;
    display:none;align-items:center;justify-content:center;font-size:7px;font-weight:800;
    letter-spacing:1px;color:#fff;z-index:3}
  .pkecil.via1{background:var(--teal)} .pkecil.via2{background:var(--gold)}
  .pkecil.mati{background:var(--coral)}

  .kontrol{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-top:18px}
  .tombol{border:none;border-radius:999px;padding:12px 26px;font-size:14px;font-weight:700;
    cursor:pointer;transition:.18s;font-family:inherit}
  .tombol.utama{background:var(--coral);color:#fff}
  .tombol.kedua{background:var(--ink);color:#f0e8f7}
  .tombol.polos{background:transparent;border:2px solid var(--ink);color:var(--ink)}
  .tombol:hover{transform:translateY(-2px)}
  select{border:2px solid var(--line);background:var(--card);color:var(--ink);
    border-radius:999px;padding:11px 18px;font-size:14px;font-family:inherit}

  .statistik{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:20px}
  .st{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:16px 10px;text-align:center}
  .st .v{font-size:26px;font-weight:800;color:var(--ink)}
  .st .v.t{color:var(--teal)} .st .v.g{color:var(--gold)} .st .v.c{color:var(--coral)}
  .st .l{font-size:10px;letter-spacing:1.5px;color:var(--muted);margin-top:4px}

  .log{background:#33243f;color:#d8c9e8;border-radius:14px;padding:16px 20px;margin-top:16px;
    font-family:Consolas,monospace;font-size:12.5px;line-height:1.9;min-height:120px;max-height:190px;overflow:auto}
  .log .briefing{color:#f4a58d} .log .event{color:#e9c46a}
  .log .ok{color:#8fd6c9} .log .hilang{color:#f4a58d} .log .aksen{color:#f4a58d}

  .nav{display:flex;align-items:center;justify-content:center;gap:22px;margin-top:24px}
  .nav button{width:52px;height:52px;border-radius:50%;border:2px solid var(--ink);
    background:var(--card);color:var(--ink);font-size:19px;cursor:pointer;transition:.18s}
  .nav button:hover{background:var(--ink);color:var(--paper)}
  .dots{display:flex;gap:10px}
  .dot-nav{width:11px;height:11px;border-radius:50%;background:var(--line);cursor:pointer;transition:.2s}
  .dot-nav.on{background:var(--coral);transform:scale(1.25)}
  .halaman{font-size:12px;color:var(--muted);letter-spacing:2px;margin-top:14px;text-align:center}
  @media(max-width:720px){
    .slide{padding:32px 24px}
    .poin3{grid-template-columns:1fr}
    .statistik{grid-template-columns:1fr 1fr}
  }

  /* ===== SLIDE 3: UPGRADE ===== */
  .stepper{display:flex;align-items:center;gap:10px;margin-bottom:16px;flex-wrap:wrap}
  .stepper i{width:28px;height:2px;background:var(--line)}
  .stp{font-size:11.5px;font-weight:700;letter-spacing:1.5px;padding:7px 14px;border-radius:999px;
    border:2px solid var(--line);color:var(--muted);transition:.3s}
  .stp.on{background:var(--coral);border-color:var(--coral);color:#fff;box-shadow:0 6px 18px rgba(232,96,76,.35)}
  #misi{margin-bottom:14px;font-size:15px}
  .pilih{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px;align-items:stretch}
  .pil{border:2px solid var(--line);background:var(--card);color:var(--ink);border-radius:14px;padding:10px 16px;
    font-size:13px;font-weight:700;cursor:pointer;transition:.18s;font-family:inherit;text-align:left}
  .pil small{display:block;font-weight:500;font-size:10.5px;color:var(--muted);margin-top:2px}
  .pil.on{border-color:var(--teal);background:#e8f5f2}
  .tombol.gang{background:transparent;border:2px dashed var(--coral);color:var(--coral)}
  .tombol.gang.on{background:var(--coral);color:#fff;border-style:solid;animation:kedip 1s infinite}
  .tombol:disabled,.pil:disabled{opacity:.5;cursor:not-allowed;transform:none}
  .macet{stroke:var(--coral)!important;stroke-width:2!important;stroke-dasharray:5 4;animation:kedip .7s infinite}
  .router.macet{border-color:var(--coral);color:var(--coral);box-shadow:0 0 0 5px rgba(232,96,76,.22);animation:kedip .7s infinite}
  .router.siaga{border-color:var(--gold);box-shadow:0 0 0 5px rgba(217,164,65,.28)}
  @keyframes kedip{50%{opacity:.45}}
  .pkecil.mati{box-shadow:0 0 14px var(--coral)}
  .dua{display:grid;grid-template-columns:1.5fr 1fr;gap:14px;margin-top:16px}
  .dua .log{margin-top:0}
  .log b{color:#fff}
  .grafik{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:12px 14px}
  .grafik .jd{font-size:10px;letter-spacing:1.5px;color:var(--muted);font-weight:700;margin-bottom:8px}
  .bars{height:120px;display:flex;align-items:flex-end;gap:5px}
  .bar{flex:1;height:100%;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;font-size:9px;color:var(--muted)}
  .bar i{width:100%;border-radius:4px 4px 0 0;height:0;transition:height .5s}
  .bar i.v1{background:var(--teal)} .bar i.v2{background:var(--gold)}
  .bar i.x{background:repeating-linear-gradient(45deg,var(--coral),var(--coral) 3px,#f4a58d 3px,#f4a58d 6px)}
  .debrief{display:none;margin-top:18px}
  .debrief.tampil{display:block;animation:geserKanan .5s cubic-bezier(.22,1,.36,1)}
  .debrief table{width:100%;border-collapse:collapse;font-size:13.5px;margin-bottom:14px}
  .debrief th{font-size:10px;letter-spacing:1.5px;color:var(--muted);text-align:left;padding:8px 10px;border-bottom:2px solid var(--line)}
  .debrief td{padding:10px;border-bottom:1px solid var(--line)}
  .debrief tr.pilihan td{background:#fbeee6;font-weight:700}
  .lencana{display:inline-block;font-size:9px;letter-spacing:1px;background:var(--teal);color:#fff;border-radius:999px;padding:2px 8px;margin-left:6px;font-weight:700}
  .rag{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
  .rag div{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:14px;font-size:12.5px;line-height:1.6;color:var(--muted)}
  .rag b{display:block;color:var(--ink);font-size:13px;margin-bottom:4px}
  @media(max-width:720px){.dua,.rag{grid-template-columns:1fr}}

  /* ===== IKON SVG ===== */
  .ik{width:1.15em;height:1.15em;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;
    stroke-linejoin:round;vertical-align:-.2em;flex:none}
  .ik.big{display:block;width:26px;height:26px;margin:0 auto 6px;stroke-width:1.6;stroke:#f4a58d}
  .tombol .ik,.pil .ik,.stp .ik{margin-right:6px}
  .nav button .ik{display:block;width:20px;height:20px;margin:auto}
  .router .ik{width:16px;height:16px;vertical-align:-3px;margin-right:4px}
  .pkecil .ik{width:12px;height:12px;stroke-width:2.6;margin:0}
  .log .ik{width:1em;height:1em;margin-right:5px;vertical-align:-.15em}
  .log .ok .ik{stroke:#8fd6c9} .log .hilang .ik{stroke:#f4a58d} .log .event .ik{stroke:#e9c46a}
  .rag b .ik{margin-right:6px;stroke:var(--coral)} .lencana .ik{width:11px;height:11px;margin-right:3px;vertical-align:-2px}
  .grafik .jd .ik{margin-right:5px}
  .topo{background-image:radial-gradient(var(--line) 1px,transparent 1px);background-size:18px 18px}