:root{
  /* Jcurve brand: navy #002A3C, deep teal #003344, green #50BE78, aqua #82DCDC, mint #C4ECB0, stone #EEEEE9 */
  --paper:#F4F4F0; --surface:#FFFFFF; --ink:#002A3C; --muted:#4D707C; --line:#CCD6DA;
  --blue:#50BE78; --on-blue:#002A3C; --blue-soft:#E3F4E8; --link:#002A3C;
  --amber:#82DCDC; --amber-soft:rgba(130,220,220,.5);
  --red:#B4392A; --red-soft:#F8E4E0; --green:#1F7A4A; --green-soft:#DDF3E4;
  --stage:#E1E1DC; --stage-card:#FFFFFF;
  --navy:#002A3C; --on-navy:#FFFFFF;
  --body:"Manrope", "Segoe UI", system-ui, -apple-system, sans-serif;
  --display:"Manrope", "Segoe UI", system-ui, -apple-system, sans-serif;
  color-scheme:light;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --paper:#001C29; --surface:#002A3C; --ink:#EEEEE9; --muted:#99ADB4; --line:#1D4757;
    --blue:#50BE78; --on-blue:#002A3C; --blue-soft:#0C3A3A; --link:#82DCDC;
    --amber:#82DCDC; --amber-soft:rgba(130,220,220,.28);
    --red:#F08A76; --red-soft:#3A1F1B; --green:#7DD49B; --green-soft:#103D2E;
    --stage:#003344; --stage-card:#0A3F52; --navy:#001520; color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --paper:#001C29; --surface:#002A3C; --ink:#EEEEE9; --muted:#99ADB4; --line:#1D4757;
  --blue:#50BE78; --on-blue:#002A3C; --blue-soft:#0C3A3A; --link:#82DCDC;
  --amber:#82DCDC; --amber-soft:rgba(130,220,220,.28);
  --red:#F08A76; --red-soft:#3A1F1B; --green:#7DD49B; --green-soft:#103D2E;
  --stage:#003344; --stage-card:#0A3F52; --navy:#001520; color-scheme:dark;
}
html{scroll-padding-top:env(safe-area-inset-top,0px)}
*,*::before,*::after{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.55}
img,svg{max-width:100%}
button{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--blue);outline-offset:2px;border-radius:6px}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
header.top{background:var(--navy);color:var(--on-navy)}
header.top .wrap{display:flex;align-items:center;gap:16px;min-height:64px;flex-wrap:wrap;padding-top:8px;padding-bottom:8px}
.brand{display:flex;align-items:center;gap:14px;font-family:var(--display);font-weight:700;font-size:18px;letter-spacing:-.01em;background:none;border:0;padding:0;cursor:pointer;color:var(--on-navy)}
.brand img{height:30px;width:auto;display:block}
.brand .sep{width:1px;height:26px;background:rgba(255,255,255,.35)}
.brand .prod{white-space:nowrap}

.top .spacer{flex:1}
.who{font-size:15px;color:#C9D6DB}
.linkbtn{background:none;border:0;color:var(--link);text-decoration-color:var(--blue);font-weight:700;cursor:pointer;padding:6px 2px;text-decoration:underline;text-underline-offset:3px}
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:999px;padding:12px 20px;font-weight:700;border:2px solid var(--blue);background:var(--blue);color:var(--on-blue);cursor:pointer;text-decoration:none;font-size:16px}
.btn.ghost{background:transparent;color:var(--link)}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.btn svg{width:18px;height:18px}
main{padding:36px 0 64px}
h1,h2,h3{font-family:var(--display);letter-spacing:-.015em;line-height:1.15;margin:0}
h1{font-size:clamp(34px,6vw,56px);font-weight:700;letter-spacing:-.025em;max-width:15ch}
h2{font-size:clamp(24px,3.4vw,32px);font-weight:700}
p{margin:0}
.lede{font-size:19px;max-width:60ch;color:var(--muted);margin-top:16px}
.notice{margin-top:18px;padding:12px 16px;border-radius:10px;background:var(--blue-soft);font-size:15px;max-width:70ch}
.notice.warn{background:var(--red-soft)}
.hero{display:grid;grid-template-columns:1.25fr 1fr;gap:40px;align-items:end;padding-bottom:36px;border-bottom:1px solid var(--line)}
.hero .actions{margin-top:26px;display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.meter{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:22px}
.meter .count{font-family:var(--display);font-size:44px;font-weight:800;line-height:1}
.meter .of{color:var(--muted)}
.bars{display:grid;grid-template-columns:repeat(6,1fr);gap:6px;margin-top:16px}
.bars span{height:10px;border-radius:5px;background:var(--line)}
.bars span.on{background:var(--green)}
.bars span.half{background:var(--amber)}
.meter p{margin-top:12px;font-size:15px;color:var(--muted)}
.mods{list-style:none;margin:28px 0 0;padding:0;display:grid;gap:0}
.mod{display:grid;grid-template-columns:56px 1fr auto;gap:18px;align-items:center;padding:20px 4px;border-bottom:1px solid var(--line)}
.mod .num{font-family:var(--display);font-size:30px;font-weight:800;color:var(--muted);text-align:center}
.mod h3{font-size:21px;font-weight:700}
.mod p{color:var(--muted);font-size:15.5px;margin-top:4px}
.mod .meta{font-size:14px;color:var(--muted);margin-top:6px;display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.chip{display:inline-block;padding:2px 10px;border-radius:999px;font-size:13.5px;font-weight:700;background:var(--line);color:var(--ink)}
.chip.pass{background:var(--green-soft);color:var(--green)}
.chip.retry{background:var(--red-soft);color:var(--red)}
.chip.watched{background:var(--amber-soft)}
.contactbox{margin-top:34px;padding:20px;border-radius:14px;border:1px dashed var(--line)}
.contactbox h3{font-size:19px}
.contactbox p{margin-top:6px;white-space:pre-line}

/* lesson */
.crumbs{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:15px;margin-bottom:12px}
.lessonhead{display:flex;justify-content:space-between;gap:16px;align-items:end;flex-wrap:wrap;margin-bottom:18px}
.stage{position:relative;background:var(--stage);border-radius:18px;overflow:hidden;container-type:inline-size;min-height:380px;display:flex}
@media (min-width:760px){.stage{aspect-ratio:16/9;min-height:0}}
.sc{position:relative;flex:1;padding:clamp(18px,5cqi,48px);display:flex;flex-direction:column;justify-content:center;gap:clamp(12px,2.4cqi,22px);min-width:0}
.sc h3{font-size:clamp(20px,3.6cqi,36px);font-weight:700;max-width:26ch}
.rv{opacity:0;transform:translateY(8px);transition:opacity .5s ease,transform .5s ease}
.rv.on{opacity:1;transform:none}
.sc-title{align-items:flex-start}
.sc-title .ico{width:clamp(64px,13cqi,120px);height:clamp(64px,13cqi,120px);color:var(--blue)}
.sc-title h3{font-size:clamp(26px,5.4cqi,54px);font-weight:800;max-width:18ch}
.sc ul,.sc ol{list-style:none;margin:0;padding:0;display:grid;gap:clamp(8px,1.6cqi,14px)}
.sc-list li{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:start;font-size:clamp(15px,2.25cqi,21px);line-height:1.35;background:var(--stage-card);border-radius:12px;padding:clamp(9px,1.5cqi,14px) clamp(12px,2cqi,18px)}
.mark{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;margin-top:1px}
.mark svg{width:16px;height:16px}
.mark.ok{background:var(--green-soft);color:var(--green)}
.mark.no{background:var(--red-soft);color:var(--red)}
.mark.dot{background:var(--blue-soft);color:var(--blue)}
.sc-steps li{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:center;font-size:clamp(15px,2.4cqi,22px);line-height:1.3}
.sc-steps .n{width:clamp(34px,5.4cqi,48px);height:clamp(34px,5.4cqi,48px);border-radius:50%;background:var(--blue);color:var(--on-blue);display:grid;place-items:center;font-family:var(--display);font-weight:800;font-size:clamp(16px,2.6cqi,24px)}
.cmp{display:grid;grid-template-columns:1fr 1fr;gap:clamp(6px,1.2cqi,12px)}
.ch{font-family:var(--display);font-weight:700;font-size:clamp(14px,2cqi,18px);display:flex;align-items:center;gap:8px}
.ch.bad{color:var(--red)} .ch.good{color:var(--green)}
.cc{background:var(--stage-card);border-radius:12px;padding:clamp(9px,1.5cqi,14px) clamp(12px,2cqi,16px);font-size:clamp(14px,2.1cqi,19px);line-height:1.35;border-left:5px solid}
.cc.bad{border-color:var(--red)} .cc.good{border-color:var(--green)}
.cc.bad.on{text-decoration:line-through;text-decoration-color:var(--red);text-decoration-thickness:2px}
.sc-email{display:grid;grid-template-columns:1.45fr 1fr;gap:clamp(14px,3cqi,30px);align-items:center}
@container (max-width:620px){.sc-email{grid-template-columns:1fr}.cmp{grid-template-columns:1fr}.ch.good{display:none}.ch.bad{display:none}}
.mail{background:var(--stage-card);border-radius:14px;padding:clamp(14px,2.4cqi,24px);font-size:clamp(13.5px,1.9cqi,17px);box-shadow:0 1px 0 var(--line);display:grid;gap:10px}
.mrow{display:grid;grid-template-columns:auto 1fr;gap:10px;align-items:baseline;position:relative}
.mk{color:var(--muted);font-size:.85em;min-width:58px}
.mv,.mbody p{background-image:linear-gradient(var(--amber-soft),var(--amber-soft));background-repeat:no-repeat;background-size:0% 100%;transition:background-size .7s ease;padding:1px 2px;box-decoration-break:clone;-webkit-box-decoration-break:clone;word-break:break-word}
.mrow.hl .mv,.mbody.hl p{background-size:100% 100%}
.mrow[data-f="subject"] .mv{font-weight:700}
.mbody{display:grid;gap:8px;border-top:1px solid var(--line);padding-top:10px;position:relative}
.mlink{position:relative}
.fakebtn{display:inline-block;background:var(--blue);color:var(--on-blue);border-radius:8px;padding:8px 16px;font-weight:700;transition:box-shadow .5s}
.mlink.hl .fakebtn{box-shadow:0 0 0 4px var(--amber)}
.pin{position:absolute;right:-6px;top:-6px;width:24px;height:24px;border-radius:50%;background:var(--amber);color:#13293A;font-style:normal;font-weight:700;font-size:13px;display:grid;place-items:center;opacity:0;transform:scale(.5);transition:all .4s}
.mlink .pin{right:auto;left:calc(100% + 8px);top:6px}
.mlink{display:flex;align-items:center}
.hl > .pin{opacity:1;transform:none}
.notes{counter-reset:none}
.notes li{display:grid;grid-template-columns:auto 1fr;gap:10px;font-size:clamp(14px,2cqi,18px);line-height:1.35;align-items:start}
.notes b{width:24px;height:24px;border-radius:50%;background:var(--amber);color:#13293A;display:grid;place-items:center;font-size:13px;margin-top:1px}
.sc-chat{display:grid;grid-template-columns:1fr 1.1fr;gap:clamp(14px,3cqi,30px);align-items:center}
@container (max-width:620px){.sc-chat{grid-template-columns:1fr}}
.phone{background:var(--stage-card);border-radius:22px;padding:14px;display:grid;gap:8px;max-width:380px;width:100%;justify-self:center;border:6px solid var(--line)}
.phead{text-align:center;font-size:13px;color:var(--muted);padding-bottom:6px;border-bottom:1px solid var(--line)}
.bub{max-width:85%;padding:9px 13px;border-radius:16px;font-size:clamp(13.5px,1.9cqi,16px);line-height:1.35}
.bub.them{background:var(--stage);border-bottom-left-radius:4px}
.bub.me{background:var(--blue);color:var(--on-blue);justify-self:end;border-bottom-right-radius:4px}
.bub.sys{background:var(--amber-soft);border-radius:12px;max-width:100%;font-size:clamp(12.5px,1.7cqi,14.5px);display:flex;gap:8px;align-items:center}
.bub.sys::before{content:"";width:9px;height:9px;border-radius:50%;background:var(--red);flex:none}
.contact{background:var(--stage-card);border:2px dashed var(--blue);border-radius:12px;padding:12px 16px;font-size:clamp(14px,2cqi,18px);white-space:pre-line}
.caption{min-height:3.4em;margin:14px 0 0;font-size:18px;line-height:1.45;max-width:72ch}
.caption[hidden]{display:none}
.controls{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:14px}
.icbtn{width:46px;height:46px;border-radius:50%;border:2px solid var(--line);background:var(--surface);display:grid;place-items:center;cursor:pointer}
.icbtn svg{width:20px;height:20px}
.icbtn.main{width:56px;height:56px;background:var(--blue);border-color:var(--blue);color:var(--on-blue)}
.icbtn[disabled]{opacity:.4;cursor:not-allowed}
.toggle{border:2px solid var(--line);background:var(--surface);border-radius:999px;padding:8px 14px;font-size:14.5px;font-weight:700;cursor:pointer}
.toggle[aria-pressed="true"]{border-color:var(--blue);color:var(--link)}
.scenebar{display:flex;gap:6px;flex:1;min-width:140px}
.scenebar button{flex:1;height:10px;border-radius:5px;border:0;background:var(--line);cursor:pointer;padding:0}
.scenebar button.done{background:var(--blue)}
.scenebar button.cur{background:var(--amber)}
.after{margin-top:26px;padding-top:22px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;align-items:center;flex-wrap:wrap}
.after p{color:var(--muted);max-width:52ch}

/* quiz */
.quiz{max-width:720px}
.qprog{color:var(--muted);font-size:15px;margin:6px 0 18px}
.qtext{font-family:var(--display);font-size:clamp(21px,3vw,27px);font-weight:700;line-height:1.25}
.opts{display:grid;gap:10px;margin-top:22px}
.opt{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:center;text-align:left;padding:14px 16px;border-radius:12px;border:2px solid var(--line);background:var(--surface);cursor:pointer;font-size:17px;line-height:1.4}
.opt .l{width:30px;height:30px;border-radius:50%;border:2px solid var(--line);display:grid;place-items:center;font-weight:700;font-size:14px}
.opt:hover:not([disabled]){border-color:var(--blue)}
.opt[disabled]{cursor:default}
.opt.right{border-color:var(--green);background:var(--green-soft)}
.opt.right .l{background:var(--green);border-color:var(--green);color:#fff}
.opt.wrong{border-color:var(--red);background:var(--red-soft)}
.opt.wrong .l{background:var(--red);border-color:var(--red);color:#fff}
.feedback{margin-top:18px;padding:16px 18px;border-radius:12px;background:var(--surface);border:1px solid var(--line)}
.feedback strong{display:block;font-family:var(--display);font-size:19px;margin-bottom:4px}
.feedback.good strong{color:var(--green)} .feedback.bad strong{color:var(--red)}
.qnav{margin-top:20px}
.score{font-family:var(--display);font-size:clamp(64px,12vw,110px);font-weight:800;line-height:1;margin:18px 0 6px}
.score small{font-size:.4em;color:var(--muted);font-weight:700}
.resrow{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}

/* certificate */
.certwrap{display:grid;grid-template-columns:1fr 300px;gap:30px;align-items:start;margin-top:22px}
.certwrap svg{width:100%;height:auto;border-radius:10px;box-shadow:0 2px 0 var(--line)}
label.field{display:grid;gap:6px;font-weight:700;font-size:15px}
input.text,textarea.text{font:inherit;font-weight:400;padding:11px 13px;border-radius:10px;border:2px solid var(--line);background:var(--surface);color:var(--ink);width:100%}
textarea.text{min-height:96px;resize:vertical}

/* report */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:22px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px 18px}
.stat b{display:block;font-family:var(--display);font-size:36px;font-weight:800;line-height:1.1}
.stat span{color:var(--muted);font-size:15px}
.tablewrap{overflow-x:auto;margin-top:22px;border:1px solid var(--line);border-radius:14px;background:var(--surface)}
table{border-collapse:collapse;width:100%;min-width:760px;font-size:15px}
th,td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-weight:700;color:var(--muted);font-size:14px}
tr:last-child td{border-bottom:0}
td.s{font-variant-numeric:tabular-nums;text-align:center}
td.s.p{color:var(--green);font-weight:700} td.s.f{color:var(--red);font-weight:700}
.panel{margin-top:30px;padding:20px;border-radius:14px;background:var(--surface);border:1px solid var(--line);display:grid;gap:14px;max-width:720px}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.muted{color:var(--muted)}
.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:var(--paper);padding:10px 18px;border-radius:10px;font-size:15px;opacity:0;transition:opacity .3s;pointer-events:none;z-index:20}
.toast.on{opacity:1}
@media (max-width:760px){
  .hero{grid-template-columns:1fr;gap:26px}
  .mod{grid-template-columns:40px 1fr;gap:12px}
  .mod .go{grid-column:2}
  .certwrap{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  main{padding-top:24px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

/* additions for the hosted version */
.center{min-height:60vh;display:grid;place-items:center;text-align:center}
.center .box{max-width:520px;display:grid;gap:16px;justify-items:center}
.center .box svg.big{width:72px;height:72px;color:var(--blue)}
.ms-btn{display:inline-flex;align-items:center;gap:10px;border-radius:10px;padding:12px 20px;font-weight:700;border:2px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;font-size:16px}
.ms-btn svg{width:20px;height:20px}
.ms-btn:hover{border-color:var(--blue)}
.demo-band{background:var(--amber-soft);font-size:14.5px;text-align:center;padding:8px 16px}
.certwrap canvas{width:100%;height:auto;border-radius:10px;box-shadow:0 0 0 1px var(--line);background:#fff}
.kv{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;font-size:15.5px}
.kv dt{color:var(--muted)} .kv dd{margin:0;font-weight:700;word-break:break-all}
pre.code{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:14px;overflow-x:auto;font-size:14px;white-space:pre}
.steps-log{list-style:none;margin:0;padding:0;display:grid;gap:6px;font-size:15.5px}
.steps-log li::before{content:"";display:inline-block;width:9px;height:9px;border-radius:50%;background:var(--muted);margin-right:10px}
.steps-log li.ok::before{background:var(--green)} .steps-log li.err::before{background:var(--red)}
.due{font-weight:700}

/* Jcurve brand details */
.hero h1{color:var(--ink)}
.meter .bars span.on{background:var(--blue)}
.center .box img.logo{height:44px;width:auto}
.sc-title .ico{color:var(--blue)}
:focus-visible{outline-color:var(--blue)}
header.top :focus-visible{outline-color:#82DCDC}
@media (max-width:360px){.brand .sep,.brand .prod{display:none}}
.linkbtn.on-navy{color:#FFFFFF;text-decoration-color:#50BE78;font-size:15.5px}