:root{
  --bg:#050e05;
  --panel:#07130a;
  --surf:#0a1c0d;
  --bord:#122818;
  --bord2:#1a3c20;

  --grn:#00c840;
  --bri:#40e870;
  --dim:#005818;
  --faint:#030a04;

  /* ALL TEXT COLORS ≥ 45% brightness */
  --white:#e8ffe8;
  --text:#7ec87e;       /* main body text */
  --sub:#60a060;        /* secondary text — was too dark in past modules */
  --muted:#4a7a4a;      /* tertiary — still readable */
  --code:#5a8a5a;       /* code comments — clearly visible */

  --yel:#d8c040;
  --red:#e04848;
  --blu:#4888e8;
  --cya:#30c8b0;
  --ora:#d87030;
  --pur:#9060d0;
  --wht:#e8ffe8;
}
*{margin:0;padding:0;box-sizing:border-box;}
body{background:var(--bg);color:var(--text);font-family:'Exo 2',sans-serif;min-height:100vh;overflow-x:hidden;position:relative;}
body::before{content:'';position:fixed;inset:0;
  background:
    radial-gradient(ellipse at 50% 50%,rgba(0,200,64,.04) 0%,transparent 60%),
    repeating-linear-gradient(0deg,transparent,transparent 23px,rgba(0,200,64,.018) 24px),
    repeating-linear-gradient(90deg,transparent,transparent 47px,rgba(0,200,64,.012) 48px);
  pointer-events:none;z-index:0;}

header{position:relative;z-index:1;border-bottom:1px solid var(--bord2);}
.hdr-bar{height:2px;background:linear-gradient(90deg,transparent,var(--grn),var(--bri),var(--grn),transparent);}
.hdr-top{background:var(--panel);padding:5px 52px;border-bottom:1px solid var(--bord);display:flex;justify-content:space-between;font-family:'Share Tech Mono',monospace;font-size:8px;letter-spacing:2px;color:var(--muted);}
.hdr-main{padding:26px 52px 0;display:grid;grid-template-columns:1fr auto;gap:36px;align-items:start;}
.hdr-kicker{font-family:'Share Tech Mono',monospace;font-size:8px;letter-spacing:3px;color:var(--grn);margin-bottom:10px;}
h1{font-family:'Rajdhani',sans-serif;font-size:clamp(38px,6.5vw,96px);font-weight:700;line-height:0.9;color:var(--white);margin-bottom:8px;letter-spacing:1px;}
h1 .acc{color:var(--grn);}
.hdr-sub{font-family:'Share Tech Mono',monospace;font-size:8.5px;color:var(--sub);line-height:2;letter-spacing:1px;}
.hdr-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:2px;}
.hs{background:var(--panel);border:1px solid var(--bord2);padding:11px 14px;text-align:center;}
.hs-v{font-family:'Rajdhani',sans-serif;font-size:24px;font-weight:700;color:var(--grn);line-height:1;margin-bottom:2px;}
.hs-l{font-family:'Share Tech Mono',monospace;font-size:7px;letter-spacing:2px;color:var(--muted);}
.tag-row{display:flex;gap:2px;padding:16px 52px 0;overflow-x:auto;}
.tg{font-family:'Share Tech Mono',monospace;font-size:8px;padding:4px 10px;border:1px solid var(--bord2);color:var(--sub);white-space:nowrap;}

.nav{position:sticky;top:0;z-index:100;background:var(--bg);border-bottom:1px solid var(--bord2);display:flex;overflow-x:auto;}
.nt{padding:12px 14px;font-family:'Share Tech Mono',monospace;font-size:8px;letter-spacing:2px;text-transform:uppercase;color:var(--sub);cursor:pointer;border-bottom:2px solid transparent;transition:all .12s;white-space:nowrap;}
.nt:hover{color:var(--text);}
.nt.active{color:var(--grn);border-bottom-color:var(--grn);}

.content{padding:36px 52px;position:relative;z-index:1;max-width:1300px;}
.view{display:none;}.view.active{display:block;}
.sh{font-family:'Rajdhani',sans-serif;font-size:26px;font-weight:700;color:var(--white);margin-bottom:4px;margin-top:26px;letter-spacing:1px;}
.sh:first-child{margin-top:0;}
.sr{font-family:'Share Tech Mono',monospace;font-size:8px;letter-spacing:2px;color:var(--muted);margin-bottom:14px;padding-bottom:8px;border-bottom:1px solid var(--bord);}

/* Code — all text clearly visible */
.cb{background:var(--panel);border:1px solid var(--bord2);border-left:2px solid var(--grn);margin:12px 0;}
.cb-top{display:flex;justify-content:space-between;padding:5px 12px;background:var(--surf);border-bottom:1px solid var(--bord);font-family:'Share Tech Mono',monospace;font-size:8px;color:var(--sub);letter-spacing:1px;}
.cb-l{color:var(--grn);}
pre.c{padding:12px 14px;font-family:'Share Tech Mono',monospace;font-size:10.5px;line-height:1.9;color:var(--text);overflow-x:auto;white-space:pre;}
.kw{color:var(--cya);font-weight:bold;}
.fn{color:var(--bri);}
.str{color:var(--yel);}
.cm{color:var(--code);}    /* #5a8a5a — clearly readable */
.hl{color:var(--white);font-weight:bold;}
.ok{color:var(--grn);}
.er{color:var(--red);}
.gr{color:var(--grn);}
.or{color:var(--ora);}
.ye{color:var(--yel);}

/* Alert callouts */
.al{padding:11px 14px;margin:12px 0;border-left:2px solid;font-family:'Share Tech Mono',monospace;font-size:9.5px;line-height:1.85;}
.al.grn{border-color:var(--grn);color:var(--bri);background:rgba(0,200,64,.05);}
.al.red{border-color:var(--red);color:var(--red);background:rgba(224,72,72,.05);}
.al.yel{border-color:var(--yel);color:var(--yel);background:rgba(216,192,64,.05);}
.al.cya{border-color:var(--cya);color:var(--cya);background:rgba(48,200,176,.04);}
.al em{font-style:normal;font-weight:700;font-family:'Rajdhani',sans-serif;font-size:16px;color:var(--white);}

/* Three pillars */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--bord2);margin:14px 0;overflow:hidden;}
.pil{padding:16px;border-right:1px solid var(--bord2);}
.pil:last-child{border-right:none;}
.pil-icon{font-size:28px;margin-bottom:8px;}
.pil-name{font-family:'Rajdhani',sans-serif;font-size:18px;font-weight:700;color:var(--white);margin-bottom:4px;}
.pil-q{font-family:'Share Tech Mono',monospace;font-size:9px;letter-spacing:1px;margin-bottom:8px;}
.pil-body{font-size:12px;color:var(--text);line-height:1.65;margin-bottom:8px;}
.pil-tools{font-family:'Share Tech Mono',monospace;font-size:9px;color:var(--sub);line-height:1.8;}

/* Golden signals */
.signals{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin:14px 0;}
.sig{background:var(--panel);border:1px solid var(--bord2);border-top:3px solid;padding:12px;}
.sig-num{font-family:'Rajdhani',sans-serif;font-size:36px;font-weight:700;line-height:1;margin-bottom:4px;}
.sig-name{font-family:'Share Tech Mono',monospace;font-size:9px;letter-spacing:2px;margin-bottom:8px;}
.sig-body{font-size:12px;color:var(--text);line-height:1.6;margin-bottom:6px;}
.sig-ex{font-family:'Share Tech Mono',monospace;font-size:9px;color:var(--sub);line-height:1.8;}

/* SLO diagram */
.slo-stack{display:flex;flex-direction:column;gap:0;border:1px solid var(--bord2);margin:14px 0;overflow:hidden;}
.sl{display:grid;grid-template-columns:80px 140px 1fr;gap:0;border-bottom:1px solid var(--bord);}
.sl:last-child{border-bottom:none;}
.sl-abbr{background:var(--surf);display:flex;align-items:center;justify-content:center;font-family:'Rajdhani',sans-serif;font-size:20px;font-weight:700;padding:14px;}
.sl-name{background:var(--panel);padding:12px 14px;display:flex;flex-direction:column;justify-content:center;border-right:1px solid var(--bord);}
.sl-n{font-family:'Rajdhani',sans-serif;font-size:14px;font-weight:700;color:var(--white);}
.sl-s{font-family:'Share Tech Mono',monospace;font-size:8px;color:var(--muted);margin-top:2px;}
.sl-body{padding:12px 14px;font-family:'Share Tech Mono',monospace;font-size:10px;color:var(--text);line-height:1.85;}

/* Error budget policy */
.eb-rows{display:flex;flex-direction:column;gap:4px;margin:12px 0;}
.eb{display:grid;grid-template-columns:40px 180px 1fr;gap:0;border:1px solid var(--bord2);overflow:hidden;}
.eb-dot{display:flex;align-items:center;justify-content:center;font-size:16px;}
.eb-range{background:var(--panel);padding:10px 12px;display:flex;flex-direction:column;justify-content:center;border-right:1px solid var(--bord);}
.eb-rng{font-family:'Rajdhani',sans-serif;font-size:15px;font-weight:700;color:var(--white);}
.eb-lbl{font-family:'Share Tech Mono',monospace;font-size:8px;letter-spacing:1px;}
.eb-policy{padding:10px 14px;font-family:'Share Tech Mono',monospace;font-size:9.5px;color:var(--text);line-height:1.75;}

/* Incident severity */
.sev-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin:14px 0;}
.sv{background:var(--panel);border:1px solid var(--bord2);border-top:3px solid;padding:12px;}
.sv-level{font-family:'Rajdhani',sans-serif;font-size:22px;font-weight:700;margin-bottom:4px;}
.sv-name{font-family:'Share Tech Mono',monospace;font-size:9px;letter-spacing:1px;margin-bottom:6px;}
.sv-body{font-size:11px;color:var(--text);line-height:1.6;}

/* Incident timeline */
.timeline{background:var(--panel);border:1px solid var(--bord2);padding:16px;margin:12px 0;}
.tl-label{font-family:'Share Tech Mono',monospace;font-size:8px;letter-spacing:2px;color:var(--grn);margin-bottom:14px;}
.tl-row{display:flex;gap:12px;margin-bottom:10px;align-items:flex-start;}
.tl-time{font-family:'Share Tech Mono',monospace;font-size:9px;color:var(--grn);width:50px;flex-shrink:0;margin-top:2px;}
.tl-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0;margin-top:5px;}
.tl-body{font-family:'Share Tech Mono',monospace;font-size:10px;color:var(--text);line-height:1.6;}

/* Chaos experiments */
.chaos-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin:12px 0;}
.ce{background:var(--panel);border:1px solid var(--bord2);border-left:3px solid;padding:12px 14px;}
.ce-name{font-family:'Rajdhani',sans-serif;font-size:14px;font-weight:600;color:var(--white);margin-bottom:4px;}
.ce-body{font-size:12px;color:var(--text);line-height:1.6;}
.ce-test{font-family:'Share Tech Mono',monospace;font-size:9px;color:var(--sub);margin-top:4px;line-height:1.7;}

/* Alerting levels */
.alert-table{width:100%;border-collapse:collapse;margin:12px 0;}
.alert-table th{background:var(--surf);padding:8px 12px;font-family:'Share Tech Mono',monospace;font-size:8px;letter-spacing:2px;color:var(--grn);font-weight:400;text-align:left;border-bottom:1px solid var(--bord2);}
.alert-table td{padding:8px 12px;border-bottom:1px solid var(--bord);font-size:12px;color:var(--text);vertical-align:top;}
.alert-table td:first-child{font-family:'Share Tech Mono',monospace;font-size:10px;color:var(--white);font-weight:bold;}
.alert-table tr:hover td{background:rgba(0,200,64,.03);}

/* Tasks */
.task-list{display:flex;flex-direction:column;gap:8px;}
.task-card{background:var(--panel);border:1px solid var(--bord);}
.task-hd{display:flex;align-items:center;gap:14px;padding:13px 17px;cursor:pointer;border-bottom:1px solid var(--bord);transition:background .12s;}
.task-hd:hover{background:var(--surf);}
.t-num{font-family:'Rajdhani',sans-serif;font-size:28px;font-weight:700;color:var(--muted);flex-shrink:0;line-height:1;}
.t-lbl{font-size:13px;font-weight:600;color:var(--white);flex:1;}
.t-meta{font-family:'Share Tech Mono',monospace;font-size:8px;color:var(--muted);white-space:nowrap;}
.t-arr{color:var(--muted);font-size:18px;transition:transform .2s;}
.t-arr.open{transform:rotate(90deg);}
.task-bd{display:none;padding:13px 17px;font-size:12px;color:var(--text);line-height:1.7;}
.task-bd.open{display:block;}
.task-bd ol,.task-bd ul{margin-left:20px;margin-top:8px;}
.task-bd li{margin-bottom:4px;}

/* Checklist */
.chk-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px;}
.chk{display:flex;align-items:flex-start;gap:10px;padding:10px 12px;background:var(--panel);border:1px solid var(--bord);cursor:pointer;transition:all .12s;}
.chk:hover{border-color:var(--bord2);}
.chk.done{border-color:rgba(0,200,64,.35);}
.chk-box{width:13px;height:13px;border:1px solid var(--bord2);flex-shrink:0;margin-top:2px;display:flex;align-items:center;justify-content:center;font-size:8px;font-family:'Share Tech Mono',monospace;transition:all .12s;}
.chk.done .chk-box{background:var(--grn);border-color:var(--grn);color:#000;}
.chk-lbl{font-size:11px;color:var(--text);line-height:1.4;}
.chk.done .chk-lbl{color:var(--grn);text-decoration:line-through;text-decoration-color:rgba(0,200,64,.4);}
.prog-row{display:flex;justify-content:space-between;font-family:'Share Tech Mono',monospace;font-size:9px;color:var(--sub);margin-bottom:6px;}
.prog-track{height:2px;background:var(--bord);margin-bottom:22px;}
.prog-fill{height:100%;background:linear-gradient(90deg,var(--dim),var(--grn));transition:width .3s;box-shadow:0 0 8px rgba(0,200,64,.3);width:0%;}

@media(max-width:900px){
  .content{padding:24px 16px;}.hdr-main{padding:22px 16px 0;grid-template-columns:1fr;}
  .tag-row,.hdr-top{padding-left:16px;padding-right:16px;}
  .pillars{grid-template-columns:1fr;}.signals{grid-template-columns:repeat(2,1fr);}
  .sev-grid{grid-template-columns:repeat(2,1fr);}.sl{grid-template-columns:60px 120px 1fr;}
  .chaos-grid{grid-template-columns:1fr;}.chk-grid{grid-template-columns:1fr;}
}
.mb-nav{display:flex;flex-wrap:wrap;gap:10px;padding:28px 52px;border-top:1px solid var(--bord2);position:relative;z-index:1;}
.mb-nav a{font-family:'IBM Plex Mono',monospace;font-size:10px;letter-spacing:1px;padding:10px 18px;border:1px solid var(--bord2);color:var(--sub,var(--text));text-decoration:none;transition:all .12s;}
.mb-nav a:hover{border-color:var(--bri);color:var(--bri);}
.mb-nav a.primary{background:var(--bri);border-color:var(--bri);color:#000;}