/* ===== Fonts (Proxima Nova: 400, 600, 700 + italics — all supplied) ===== */
@font-face { font-family: "Proxima Nova"; src: url("../fonts/ProximaNova-Regular.otf") format("opentype"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Proxima Nova"; src: url("../fonts/ProximaNova-RegularItalic.otf") format("opentype"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "Proxima Nova"; src: url("../fonts/ProximaNova-Semibold.otf") format("opentype"); font-weight: 600; font-style: normal; font-display: swap; }
@font-face { font-family: "Proxima Nova"; src: url("../fonts/ProximaNova-SemiboldItalic.otf") format("opentype"); font-weight: 600; font-style: italic; font-display: swap; }
@font-face { font-family: "Proxima Nova"; src: url("../fonts/ProximaNova-Bold.otf") format("opentype"); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: "Proxima Nova"; src: url("../fonts/ProximaNova-BoldItalic.otf") format("opentype"); font-weight: 700; font-style: italic; font-display: swap; }

/* ===== Brand tokens: navy → teal, green for completion. Minimal, premium: hairlines over shadows. ===== */
:root {
  --ink: #0F2A44;        --ink-2: #3A4E63;      --muted: #5A6878;
  --navy: #0B2545;       --navy-2: #173A5E;
  --teal: #0F6E80;       --teal-2: #0B5563;     --teal-bright: #1AA0A6;  --teal-soft: #EAF5F6;  --teal-line: #BFE0E4;
  --green: #2E9063;      --green-2: #1F7A4D;    --green-soft: #E6F4EC;
  --line: #E4E9EE;       --line-2: #D3DBE3;     --hover: #F4F7F9;
  --bg: #FFFFFF;         --bg-2: #F7F9FB;
  --bad: #6B5B7B;        --bad-soft: #F3F0F6;   /* no red in the palette: muted plum + ✕ text */
  --radius: 12px; --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(11,37,69,.06);
  --shadow-lg: 0 12px 32px rgba(11,37,69,.12);
  --side-w: 360px; --hdr: 60px;
  --font: "Proxima Nova", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { font-family: var(--font); color: var(--ink); background: var(--bg); line-height: 1.65; font-size: 17px; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--teal-bright); outline-offset: 2px; }
strong { font-weight: 700; }
em { font-style: italic; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
/* course text can't be selected/copied; answer fields and the name field still can */
main, .sidebar { -webkit-user-select: none; user-select: none; }
main textarea, main input { -webkit-user-select: text; user-select: text; }
main .copyable { -webkit-user-select: text; user-select: text; }

/* ===== Header ===== */
.topbar { position: sticky; top: 0; z-index: 30; height: var(--hdr); background: linear-gradient(90deg, #0B2545 0%, #0F3A5C 55%, #12697A 100%); color: #fff; display: flex; align-items: center; gap: 16px; padding: 0 24px; border-bottom: 1px solid rgba(255,255,255,.06); }
.brand { display: flex; align-items: baseline; gap: 14px; min-width: 0; }
.brand .prog { font-size: 13px; font-weight: 600; letter-spacing: .02em; color: rgba(255,255,255,.62); white-space: nowrap; padding-right: 14px; border-right: 1px solid rgba(255,255,255,.18); }
.brand .ttl { font-weight: 600; font-size: 17px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.brand .trk { font-size: 13px; color: rgba(255,255,255,.62); white-space: nowrap; }
.topbar .spacer { flex: 1; }
.meter { display: flex; align-items: center; gap: 10px; font-size: 13px; color: rgba(255,255,255,.78); white-space: nowrap; }
.meter .ring { width: 34px; height: 34px; }
.meter .ring circle { fill: none; stroke-width: 3; }
.meter .ring .trk-c { stroke: rgba(255,255,255,.16); }
.meter .ring .val-c { stroke: var(--teal-bright); stroke-linecap: round; transition: stroke-dashoffset .5s; }
.meter .mtxt { display: flex; flex-direction: column; line-height: 1.25; }
.meter .mtxt b { color: #fff; font-size: 14px; font-weight: 600; }
.menu-btn { display: none; background: transparent; border: 1px solid rgba(255,255,255,.3); color: #fff; border-radius: 8px; padding: 5px 12px; font-weight: 600; font-size: 14px; }

/* ===== Layout: fixed course-content panel + reading column ===== */
.layout { display: grid; grid-template-columns: var(--side-w) minmax(0, 1fr); min-height: calc(100vh - var(--hdr)); }
.sidebar { position: sticky; top: var(--hdr); height: calc(100vh - var(--hdr)); overflow-y: auto; background: #fff; border-right: 1px solid var(--line); display: flex; flex-direction: column; }
.side-h { padding: 20px 20px 14px; border-bottom: 1px solid var(--line); }
.side-h .st { font-size: 16px; font-weight: 700; color: var(--ink); }
.side-h .ss { font-size: 13px; color: var(--muted); margin-top: 2px; }
.side-h .sbar { height: 4px; background: var(--line); border-radius: 99px; margin-top: 12px; overflow: hidden; }
.side-h .sbar i { display: block; height: 100%; background: var(--green); border-radius: 99px; transition: width .4s; }
.mods { list-style: none; margin: 0; padding: 0; }
.mod { border-bottom: 1px solid var(--line); }
.mod-row { display: flex; align-items: flex-start; gap: 12px; width: 100%; text-align: left; background: var(--bg-2); border: 0; padding: 14px 16px 14px 20px; }
.mod-row:hover { background: #EEF2F6; }
.mod-row:disabled { cursor: default; }
.mod-row:disabled .mt { color: var(--muted); }
.mod-num { flex: none; width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center; font-size: 12px; font-weight: 700; color: var(--navy); border: 1.5px solid var(--line-2); background: #fff; margin-top: 1px; }
.mod-num.blank { visibility: hidden; }
.mod.cur .mod-num { background: var(--navy); color: #fff; border-color: var(--navy); }
.mod-t { display: flex; flex-direction: column; min-width: 0; flex: 1; }
.mod-t .mt { font-weight: 700; color: var(--ink); font-size: 15px; line-height: 1.3; }
.mod-t .ms { font-size: 12.5px; color: var(--muted); margin-top: 3px; }
.chev { flex: none; width: 16px; height: 16px; color: var(--muted); margin-top: 4px; transition: transform .2s; }
.mod.open .chev { transform: rotate(180deg); }
.steps { list-style: none; margin: 0; padding: 4px 0 8px; background: #fff; }
.steps .step { display: flex; align-items: flex-start; gap: 12px; width: 100%; text-align: left; background: none; border: 0; padding: 9px 16px 9px 20px; font-size: 14.5px; color: var(--ink); line-height: 1.35; }
.steps .step:hover:not(:disabled) { background: var(--hover); }
.steps .step.cur { background: var(--teal-soft); box-shadow: inset 3px 0 0 var(--teal); }
.steps .step:disabled { color: #9AA7B4; cursor: not-allowed; }
.steps .stx { display: flex; flex-direction: column; min-width: 0; }
.steps .stype { font-size: 12px; color: var(--muted); margin-top: 2px; }
.steps .dot { flex: none; width: 18px; height: 18px; border-radius: 50%; border: 1.5px solid var(--line-2); background: #fff; display: grid; place-items: center; margin: 1px 0 0 3px; }
.steps .step.done .dot { border-color: var(--green); background: var(--green-soft); color: var(--green); }
.steps .step.cur:not(.done) .dot { border-color: var(--teal); }
.steps .dot svg { width: 11px; height: 11px; }
.side-foot { margin-top: auto; border-top: 1px solid var(--line); padding: 16px 20px 20px; display: grid; gap: 8px; font-size: 13px; color: var(--muted); }
.side-foot .kv { display: flex; gap: 22px; margin-bottom: 4px; }
.side-foot .kv span { display: block; font-size: 12px; }
.side-foot .kv b { color: var(--ink); font-size: 15px; }
.linkbtn { background: none; border: 0; padding: 0; color: var(--teal); text-decoration: none; font-size: 13px; font-weight: 600; text-align: left; }
.linkbtn:hover { text-decoration: underline; }

/* ===== Reading column ===== */
main { min-width: 0; display: flex; flex-direction: column; }
.page { width: 100%; max-width: 820px; margin: 0 auto; padding: 44px 40px 40px; flex: 1; }
.crumb { font-size: 13px; color: var(--muted); display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.crumb b { color: var(--teal); font-weight: 600; }
.crumb .sep { color: var(--line-2); }
h1.step-title { font-size: 34px; line-height: 1.18; letter-spacing: -.01em; margin: 8px 0 28px; color: var(--ink); font-weight: 700; }
h3 { font-size: 20px; color: var(--ink); margin: 36px 0 12px; letter-spacing: -.005em; }
p { margin: 0 0 16px; color: var(--ink-2); }
.lead { font-size: 19px; line-height: 1.6; color: var(--ink-2); }
.block { margin-bottom: 26px; }
.note { font-size: 14px; color: var(--muted); }

/* Welcome hero — brand moment, kept restrained */
.hero { background: linear-gradient(135deg, #0A2240 0%, #0E3A5C 60%, #0F6F7E 100%); color: #fff; border-radius: var(--radius-lg); padding: 44px 48px; }
.hero .hk { font-size: 12px; letter-spacing: .16em; text-transform: uppercase; font-weight: 700; color: #7FD3D6; }
.hero .ht { font-size: 44px; line-height: 1.1; letter-spacing: -.015em; margin: 12px 0 10px; font-weight: 700; color: #fff; }
.hero .hs { font-size: 19px; color: #C6E4E9; margin: 0 0 28px; }
.hero .hmeta { border-top: 1px solid rgba(255,255,255,.16); padding-top: 22px; display: flex; flex-wrap: wrap; gap: 18px 44px; }
.hero .hm span { display: block; font-size: 13px; color: rgba(255,255,255,.66); }
.hero .hm b { font-size: 16px; font-weight: 600; }

/* ===== Content components (hairline, no shadow) ===== */
.cards { display: grid; gap: 12px; grid-template-columns: repeat(var(--cols, 3), minmax(0, 1fr)); }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 18px 16px; }
.card .num { font-size: 13px; font-weight: 700; color: var(--teal); margin-bottom: 6px; }
.card h4 { margin: 0 0 4px; font-size: 16.5px; color: var(--ink); }
.card p, .card div.t { margin: 0; font-size: 15px; color: var(--ink-2); line-height: 1.55; }
.card.tone-bad { background: var(--bad-soft); border-color: #E3DDEA; }
.card.tone-good { background: var(--green-soft); border-color: #CFE7DA; }

.compare { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.compare .row { display: grid; grid-template-columns: 1fr 1fr; }
.compare .row + .row > div { border-top: 1px solid var(--line); }
.compare .row > div { padding: 13px 18px; font-size: 15.5px; color: var(--ink-2); }
.compare .row > div:last-child { color: var(--ink); font-weight: 600; background: var(--teal-soft); }
.compare .hd > div { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; font-weight: 700; color: var(--muted) !important; background: var(--bg-2) !important; }
.compare .hd > div:last-child { color: var(--teal) !important; }

.flow { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 10px; padding: 14px 16px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-2); font-weight: 600; font-size: 14px; color: var(--ink); letter-spacing: .02em; }
.flow .arr { color: var(--teal-bright); }

.quote { font-size: 21px; font-style: italic; color: var(--ink); border-left: 3px solid var(--teal-bright); padding: 4px 0 4px 20px; line-height: 1.5; }
.big-quote { display: block; font-size: 20px; font-weight: 600; color: var(--ink); margin: 4px 0 8px; line-height: 1.45; }

.callout { border-radius: var(--radius); padding: 16px 20px; background: var(--bg-2); border: 1px solid var(--line); border-left: 3px solid var(--teal); }
.callout .ct { font-weight: 700; color: var(--teal); margin-bottom: 4px; font-size: 12px; letter-spacing: .12em; text-transform: uppercase; }
.callout > div:last-child { color: var(--ink-2); }
.callout.pause { border-left-color: var(--teal-bright); }
.callout.key { background: var(--green-soft); border-color: #CFE7DA; border-left-color: var(--green); }
.callout.key .ct { color: var(--green-2); }
.callout.scenario { background: #fff; border-left-color: var(--navy); }
.callout.scenario .ct { color: var(--navy-2); }
.callout ul { margin: 6px 0 0; padding-left: 20px; }

.coach { margin-top: 18px; border-radius: var(--radius); background: var(--green-soft); border: 1px solid #CFE7DA; padding: 16px 20px; animation: rise .35s ease; }
.coach .ct { font-weight: 700; color: var(--green-2); letter-spacing: .12em; text-transform: uppercase; font-size: 12px; margin-bottom: 6px; }
.coach ul { margin: 0; padding-left: 20px; color: var(--ink-2); }
.coach li { margin: 4px 0; }
@keyframes rise { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

.example { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.example .er { display: grid; grid-template-columns: 160px 1fr; }
.example .er + .er { border-top: 1px solid var(--line); }
.example .er .lab { background: var(--bg-2); color: var(--teal); font-weight: 700; padding: 13px 16px; font-size: 12px; letter-spacing: .1em; text-transform: uppercase; border-right: 1px solid var(--line); }
.example .er .tx { padding: 12px 16px; color: var(--ink); }

.warnlist { display: grid; gap: 8px; }
.warnlist div { background: var(--bad-soft); border-radius: 10px; padding: 10px 14px; font-style: italic; color: var(--ink-2); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.chips span { background: #fff; border: 1px solid var(--green); color: var(--green-2); border-radius: 99px; padding: 4px 12px; font-size: 13px; font-weight: 600; }
.checklist { border: 1px solid var(--line); border-radius: var(--radius); padding: 4px 20px; }
.checklist label { display: flex; gap: 12px; align-items: center; padding: 13px 0; font-weight: 600; color: var(--ink); }
.checklist label + label { border-top: 1px solid var(--line); }
.checklist input { width: 18px; height: 18px; accent-color: var(--green); }

/* ===== Buttons & forms ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 1px solid transparent; border-radius: 8px; padding: 10px 20px; font-weight: 700; font-size: 15px; background: var(--teal); color: #fff; min-height: 44px; transition: background .15s, border-color .15s; }
.btn:hover { background: var(--teal-2); }
.btn.secondary { background: #fff; color: var(--teal); border-color: var(--teal-line); }
.btn.secondary:hover { border-color: var(--teal); background: var(--teal-soft); }
.btn.ghost { background: #fff; color: var(--ink); border-color: var(--line-2); }
.btn.ghost:hover { background: var(--hover); }
.btn:disabled { background: #E9EEF2; color: #93A1AF; cursor: not-allowed; border-color: transparent; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-top: 14px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-weight: 600; color: var(--ink); margin-bottom: 6px; font-size: 15.5px; }
input[type=text], textarea { width: 100%; border: 1px solid var(--line-2); border-radius: 8px; padding: 11px 13px; background: #fff; transition: border-color .15s, box-shadow .15s; }
input[type=text]:focus, textarea:focus { border-color: var(--teal); box-shadow: 0 0 0 3px var(--teal-soft); outline: none; }
textarea { resize: vertical; min-height: 64px; line-height: 1.5; }
.field.err textarea, .field.err input { border-color: var(--bad); background: var(--bad-soft); }
.msg { font-size: 14.5px; margin-top: 10px; padding: 9px 13px; border-radius: 8px; }
.msg.err { background: var(--bad-soft); color: var(--bad); }
.msg.ok { background: var(--green-soft); color: var(--green-2); }
.msg:empty { display: none; }
.panel { border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; background: #fff; }
.panel > .pt { font-weight: 700; color: var(--ink); font-size: 17.5px; margin-bottom: 4px; }
.panel > .pi { color: var(--muted); font-size: 15px; margin-bottom: 16px; }
.model { margin-top: 16px; background: var(--teal-soft); border-radius: 10px; padding: 14px 16px; }
.model .ct { font-weight: 700; color: var(--teal); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 4px; }
.selfcheck { margin-top: 14px; }
.selfcheck .ct { font-weight: 700; color: var(--ink); font-size: 14px; margin-bottom: 4px; }
.selfcheck label { display: flex; gap: 10px; align-items: flex-start; padding: 5px 0; font-size: 15px; color: var(--ink-2); }
.selfcheck input { width: 17px; height: 17px; margin-top: 3px; accent-color: var(--green); }

/* path picker */
.track-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.track-grid .grp-t { font-weight: 700; color: var(--muted); margin-bottom: 8px; font-size: 12px; letter-spacing: .12em; text-transform: uppercase; }
.opt-card { display: block; width: 100%; text-align: left; background: #fff; border: 1px solid var(--line-2); border-radius: 10px; padding: 12px 14px; margin-bottom: 8px; transition: border-color .15s, background .15s; }
.opt-card:hover { border-color: var(--teal-line); }
.opt-card b { display: block; color: var(--ink); }
.opt-card span { font-size: 14px; color: var(--muted); }
.opt-card[aria-pressed=true] { border-color: var(--teal); background: var(--teal-soft); box-shadow: inset 0 0 0 1px var(--teal); }

/* scale */
.scale { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.scale button { background: #fff; border: 1px solid var(--line-2); border-radius: 10px; padding: 12px 6px; display: flex; flex-direction: column; align-items: center; gap: 2px; }
.scale button:hover { border-color: var(--teal-line); }
.scale button b { font-size: 21px; color: var(--ink); }
.scale button span { font-size: 12.5px; color: var(--muted); text-align: center; line-height: 1.25; }
.scale button[aria-pressed=true] { border-color: var(--teal); background: var(--teal-soft); box-shadow: inset 0 0 0 1px var(--teal); }

/* ===== Activities ===== */
.act { border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 26px; background: #fff; }
.act-h { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.act-h .at { font-weight: 700; color: var(--ink); font-size: 18.5px; }
.act-h .badge { font-size: 11.5px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--teal); background: var(--teal-soft); padding: 3px 10px; border-radius: 99px; }
.act-h .badge.done { color: var(--green-2); background: var(--green-soft); }
.act .ai { color: var(--muted); font-size: 15px; margin: 4px 0 18px; }

/* flip */
.flips { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.flip { perspective: 900px; background: none; border: 0; padding: 0; height: 180px; text-align: left; }
.flip .fi { position: relative; width: 100%; height: 100%; transition: transform .5s; transform-style: preserve-3d; }
.flip.on .fi { transform: rotateY(180deg); }
.flip .ff, .flip .fb { position: absolute; inset: 0; backface-visibility: hidden; -webkit-backface-visibility: hidden; border-radius: var(--radius); padding: 18px; display: flex; flex-direction: column; justify-content: center; }
.flip .ff { background: var(--navy); color: #fff; }
.flip .ff .big { font-size: 18.5px; font-weight: 700; line-height: 1.35; }
.flip .ff .sub { color: #B9C7D6; font-size: 14px; margin-top: 4px; }
.flip .ff .hint { position: absolute; bottom: 12px; right: 16px; font-size: 11.5px; color: #7FD3D6; letter-spacing: .08em; text-transform: uppercase; font-weight: 600; }
.flip .fb { background: #fff; border: 1px solid var(--teal-line); transform: rotateY(180deg); color: var(--ink); }
.flip .fb .big { font-weight: 700; font-size: 16.5px; line-height: 1.4; }
.flip .fb .sub { font-size: 14px; color: var(--teal); margin-top: 6px; }
.flip.seen:not(.on) .ff::after { content: "Viewed"; position: absolute; top: 12px; right: 14px; font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: #8FD3B3; font-weight: 700; }

/* bucket */
.pool { display: flex; flex-wrap: wrap; gap: 8px; min-height: 54px; padding: 12px; border: 1px dashed var(--line-2); border-radius: var(--radius); margin-bottom: 14px; background: var(--bg-2); }
.pool:empty::after { content: "All items placed — check your answers."; color: var(--muted); font-size: 14px; align-self: center; }
.chip { background: #fff; border: 1px solid var(--line-2); border-radius: 8px; padding: 8px 12px; font-size: 15px; cursor: grab; touch-action: none; user-select: none; max-width: 100%; text-align: left; box-shadow: var(--shadow-sm); }
.chip:hover { border-color: var(--teal-line); }
.chip.sel { border-color: var(--teal); box-shadow: 0 0 0 3px var(--teal-soft); }
.chip.locked { border-color: #BFDFCD; background: var(--green-soft); cursor: default; box-shadow: none; }
.chip.wrong { border-color: var(--bad); background: var(--bad-soft); }
.chip-actions { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; width: 100%; padding: 8px 10px; background: var(--teal-soft); border-radius: 8px; font-size: 14px; }
.chip-actions > span { font-weight: 700; color: var(--ink); margin-right: 4px; }
.chip-actions .btn { min-height: 34px; padding: 5px 12px; font-size: 14px; }
@media (pointer: coarse) { .chip { touch-action: manipulation; } }
.chip.ghost { position: fixed; pointer-events: none; z-index: 100; opacity: .95; box-shadow: var(--shadow-lg); cursor: grabbing; }
.chip.dragging { opacity: .35; }
.buckets { display: grid; gap: 12px; grid-template-columns: repeat(var(--n, 2), minmax(0, 1fr)); }
.bucket { border: 1px solid var(--line-2); border-radius: var(--radius); padding: 12px; min-height: 140px; background: #fff; display: flex; flex-direction: column; gap: 8px; transition: border-color .15s, background .15s; }
.bucket .bh { font-weight: 700; color: var(--ink); font-size: 15.5px; }
.bucket .bh small { display: block; font-weight: 400; color: var(--muted); font-size: 13px; }
.bucket.over, .bucket.target { border-color: var(--teal); background: var(--teal-soft); }
.bucket .chip { width: 100%; }

/* sequence */
.seq { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.seq .col-t { font-size: 12px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.seq-items { display: grid; gap: 8px; align-content: start; }
.seq-item { background: #fff; border: 1px solid var(--line-2); border-radius: 8px; padding: 10px 12px; text-align: left; font-size: 15px; box-shadow: var(--shadow-sm); }
.seq-item:hover:not(:disabled) { border-color: var(--teal); }
.slots { display: grid; gap: 0; position: relative; }
.slot { display: grid; grid-template-columns: 140px 1fr; align-items: stretch; min-height: 52px; position: relative; }
.slot .sl { display: flex; align-items: center; font-size: 11.5px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--teal); padding-right: 8px; }
.slot .sv { border: 1px dashed var(--line-2); border-radius: 8px; padding: 8px 12px; font-size: 15px; background: var(--bg-2); display: flex; align-items: center; margin: 5px 0; text-align: left; width: 100%; color: var(--ink); }
.slot .sv.filled { border-style: solid; background: #fff; border-color: var(--teal-line); }
.slot .sv.locked { border-color: #BFDFCD; background: var(--green-soft); }
.slot .sv.wrong { border-color: var(--bad); background: var(--bad-soft); }
.slot:not(:last-child)::after { content: ""; position: absolute; left: calc(140px + 22px); bottom: -6px; width: 1.5px; height: 12px; background: var(--teal-line); z-index: 1; }

/* match */
.match { position: relative; display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.4fr); gap: 14px 64px; }
.match .mcol { display: grid; gap: 10px; align-content: start; position: relative; z-index: 2; }
.m-item { background: #fff; border: 1px solid var(--line-2); border-radius: 8px; padding: 10px 12px; text-align: left; font-size: 15px; position: relative; }
.m-item:hover { border-color: var(--teal-line); }
.m-item.l { font-weight: 700; color: var(--ink); }
.m-item.sel { border-color: var(--teal); box-shadow: 0 0 0 3px var(--teal-soft); }
.m-item.paired { border-color: var(--teal-line); }
.m-item.locked { border-color: #BFDFCD; background: var(--green-soft); }
.m-item.wrong { border-color: var(--bad); background: var(--bad-soft); }
.m-item .tag { display: none; margin-top: 6px; font-size: 11.5px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--teal); }
.m-lines { position: absolute; inset: 0; pointer-events: none; z-index: 1; overflow: visible; }
.m-lines line { stroke: var(--teal-bright); stroke-width: 1.75; }
.m-lines line.locked { stroke: var(--green); }
.m-lines circle { fill: var(--teal-bright); }
.m-lines circle.locked { fill: var(--green); }

/* hunt */
.hunt-msg { background: var(--bg-2); border-radius: var(--radius); padding: 18px; border: 1px solid var(--line); }
.hunt-msg .hh { font-size: 13px; color: var(--muted); margin-bottom: 8px; font-weight: 600; }
.sent { display: inline; background: none; border: 0; padding: 2px 3px; margin: 0; text-align: left; line-height: 1.85; font-size: 16px; border-radius: 4px; border-bottom: 1.5px dotted var(--line-2); color: var(--ink); }
.sent:hover:not(:disabled) { background: var(--teal-soft); }
.sent.found { background: var(--green-soft); border-bottom: 1.5px solid var(--green); }
.sent.miss { background: var(--bad-soft); }
.sent .tg { font-size: 10.5px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: #fff; background: var(--green); border-radius: 4px; padding: 1px 6px; margin-right: 6px; vertical-align: 2px; }
.task { margin: 16px 0 8px; font-size: 16.5px; color: var(--ink); }
.task .tn { font-size: 11.5px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--teal); display: block; }

/* simulation */
.sim-setup { background: var(--navy); color: #E3EBF3; border-radius: var(--radius); padding: 18px 20px; margin-bottom: 18px; }
.sim-setup b { color: #7FD3D6; letter-spacing: .12em; text-transform: uppercase; font-size: 11.5px; display: block; margin-bottom: 4px; }
.sim-prog { display: flex; gap: 6px; margin-bottom: 16px; flex-wrap: wrap; }
.sim-prog span { font-size: 11.5px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; padding: 4px 10px; border-radius: 99px; background: var(--bg-2); border: 1px solid var(--line); color: var(--muted); }
.sim-prog span.cur { background: var(--navy); border-color: var(--navy); color: #fff; }
.sim-prog span.ok { background: var(--green-soft); border-color: #CFE7DA; color: var(--green-2); }
.sim-sit { font-size: 17.5px; color: var(--ink); font-weight: 600; margin-bottom: 14px; }
.sim-opts { display: grid; gap: 10px; }
.sim-opt { background: #fff; border: 1px solid var(--line-2); border-radius: 10px; padding: 13px 16px; text-align: left; font-size: 15.5px; color: var(--ink); }
.sim-opt:hover:not(:disabled) { border-color: var(--teal); }
.sim-opt.bad { border-color: #D8CFE0; background: var(--bad-soft); color: var(--muted); }
.sim-opt.good { border-color: #BFDFCD; background: var(--green-soft); }
.sim-opt:disabled { cursor: default; }
.fb { margin-top: 12px; padding: 12px 16px; border-radius: 10px; font-size: 15px; color: var(--ink-2); }
.fb.good { background: var(--green-soft); }
.fb.bad { background: var(--bad-soft); }
.fb b { display: block; font-size: 11.5px; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 2px; }
.fb.good b { color: var(--green-2); }
.fb.bad b { color: var(--bad); }
.transcript { border-left: 2px solid var(--line-2); padding-left: 14px; margin-bottom: 16px; font-size: 15px; color: var(--muted); }
.transcript p { margin: 0 0 6px; }
.transcript .you { color: var(--ink); }

/* quiz */
.q { border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 22px 24px; margin-bottom: 14px; background: #fff; }
.q .qn { font-size: 11.5px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--teal); }
.q .qt { font-weight: 600; color: var(--ink); font-size: 17px; margin: 6px 0 14px; line-height: 1.45; }
.q .opts { display: grid; gap: 8px; }
.q .opt { display: flex; gap: 12px; align-items: flex-start; border: 1px solid var(--line-2); border-radius: 8px; padding: 11px 14px; background: #fff; cursor: pointer; font-size: 15.5px; color: var(--ink); transition: border-color .15s, background .15s; }
.q .opt:hover { border-color: var(--teal-line); }
.q .opt input { margin-top: 4px; accent-color: var(--teal); }
.q .opt.picked { border-color: var(--teal); background: var(--teal-soft); }
.q .opt.right { border-color: #BFDFCD; background: var(--green-soft); }
.q .opt.wrongpick { border-color: #D8CFE0; background: var(--bad-soft); }
.q.locked .opt { cursor: default; }
.q.unans { border-color: var(--bad); box-shadow: 0 0 0 3px var(--bad-soft); }
.score { display: flex; align-items: center; gap: 18px; padding: 20px 24px; border-radius: var(--radius-lg); background: var(--navy); color: #E3EBF3; margin-bottom: 16px; flex-wrap: wrap; }
.score strong { color: #fff; }
.score .pct { font-size: 38px; font-weight: 700; color: #7FD3D6; line-height: 1; }
.score.pass .pct { color: #8FD3B3; }

/* bottom lesson bar */
.step-nav { position: sticky; bottom: 0; z-index: 20; display: flex; justify-content: space-between; align-items: center; gap: 14px; padding: 12px 40px; background: rgba(255,255,255,.96); backdrop-filter: blur(6px); border-top: 1px solid var(--line); }
.step-nav .gate { font-size: 13.5px; color: var(--muted); text-align: center; flex: 1; }
.step-nav .next-wrap { display: flex; align-items: center; gap: 12px; min-width: 0; }
.step-nav .upnext { display: flex; flex-direction: column; align-items: flex-end; line-height: 1.25; min-width: 0; }
.step-nav .upnext span { font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); font-weight: 700; }
.step-nav .upnext b { font-size: 14px; color: var(--ink); font-weight: 600; max-width: 280px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* certificate */
.cert-wrap canvas { width: 100%; height: auto; border-radius: 8px; border: 1px solid var(--line); background: #fff; display: block; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin: 16px 0; }
.stat { border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.stat .sv { font-size: 26px; font-weight: 700; color: var(--ink); }
.stat .sl { font-size: 13px; color: var(--muted); }
.rollup { width: 100%; border-collapse: separate; border-spacing: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; font-size: 15px; }
.rollup th, .rollup td { text-align: left; padding: 11px 16px; border-bottom: 1px solid var(--line); }
.rollup tr:last-child td { border-bottom: 0; }
.rollup th { background: var(--bg-2); font-size: 11.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.rollup td:last-child, .rollup th:last-child { text-align: right; }

.closing { background: var(--navy); color: #E3EBF3; border-radius: var(--radius-lg); padding: 28px; }
.closing h3 { color: #fff; margin-top: 0; }
.closing p { color: #C9D6E3; }
.closing .ln { display: grid; grid-template-columns: 1fr auto; gap: 6px 18px; margin: 12px 0 16px; font-size: 16.5px; }
.closing .ln b { color: #7FD3D6; letter-spacing: .08em; }

footer.foot { text-align: center; font-size: 12px; color: var(--muted); padding: 18px; border-top: 1px solid var(--line); }

/* ===== Responsive ===== */
@media (max-width: 1100px) {
  :root { --side-w: 320px; }
  .cards[style*="--cols: 5"], .cards[style*="--cols:5"] { --cols: 3 !important; }
  .brand .prog { display: none; }
}
@media (max-width: 860px) {
  body { font-size: 16px; }
  .layout { grid-template-columns: 1fr; }
  .topbar { padding: 0 14px; gap: 12px; }
  .menu-btn { display: inline-block; }
  .brand { flex-direction: column; gap: 0; align-items: flex-start; }
  .brand .ttl { font-size: 15px; }
  .brand .trk { font-size: 12px; }
  .meter .mtxt { display: none; }
  .sidebar { position: fixed; top: var(--hdr); left: 0; bottom: 0; height: auto; width: min(360px, 90vw); z-index: 40; transform: translateX(-105%); transition: transform .25s; box-shadow: var(--shadow-lg); }
  body.nav-open .sidebar { transform: none; }
  body.nav-open::after { content: ""; position: fixed; inset: var(--hdr) 0 0 0; background: rgba(7,26,51,.4); z-index: 35; }
  .page { padding: 26px 18px 28px; }
  h1.step-title { font-size: 27px; margin-bottom: 22px; }
  .cards { --cols: 2 !important; }
  .hero { padding: 30px 24px; }
  .hero .ht { font-size: 32px; }
  .hero .hs { font-size: 17px; }
  .step-nav { padding: 10px 14px; }
  .step-nav .upnext { display: none; }
}
@media (max-width: 640px) {
  .cards { --cols: 1 !important; }
  .compare .row { grid-template-columns: 1fr; }
  .compare .row > div:first-child { padding-bottom: 4px; }
  .compare .row > div:last-child { border-top: 0 !important; }
  .compare .hd { display: none; }
  .example .er { grid-template-columns: 1fr; }
  .example .er .lab { padding: 7px 14px; border-right: 0; }
  .track-grid { grid-template-columns: 1fr; }
  .scale { grid-template-columns: repeat(5, minmax(0,1fr)); gap: 4px; }
  .scale button { padding: 8px 2px; }
  .scale button span { font-size: 11px; }
  .buckets { grid-template-columns: 1fr; }
  .bucket { min-height: 80px; }
  .seq { grid-template-columns: 1fr; }
  .slot { grid-template-columns: 1fr; }
  .slot .sl { padding-top: 6px; }
  .slot:not(:last-child)::after { display: none; }
  /* match collapses to one column: SVG connector lines are hidden and each opening shows a text tag instead */
  .match { grid-template-columns: 1fr; gap: 16px; }
  .m-lines { display: none; }
  .m-item .tag { display: block; }
  .act { padding: 18px; }
  .q { padding: 18px; }
  .step-nav .gate { display: none; }
  .closing .ln { grid-template-columns: 1fr; }
}
@media print {
  .topbar, .sidebar, .step-nav, footer.foot { display: none !important; }
  .layout { display: block; }
}

/* send-to-L&D instructions */
.send-steps { margin: 4px 0 0; padding-left: 22px; color: var(--ink-2); }
.send-steps > li { margin: 0 0 14px; padding-left: 4px; }
.send-steps > li strong { color: var(--ink); }
.send-steps ul { margin: 6px 0 0; padding-left: 18px; font-size: 14.5px; }
.send-steps .addr { margin-top: 10px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg-2); padding: 6px 14px; }
.kvrow { display: grid; grid-template-columns: 70px 1fr; gap: 10px; padding: 7px 0; font-size: 14.5px; }
.kvrow + .kvrow { border-top: 1px solid var(--line); }
.kvrow .k { color: var(--muted); font-weight: 600; }
.kvrow .v { color: var(--ink); word-break: break-word; }
.copyable { cursor: text; }