/* ============ Tokens ============ */
:root {
  --bg: #0b1220;
  --bg-glow: rgba(45, 212, 191, .10);
  --bg-glow-2: rgba(129, 140, 248, .10);
  --surface: #111a2e;
  --surface-2: #16213a;
  --surface-3: #22304f;
  --border: rgba(148, 163, 184, .14);
  --border-strong: rgba(148, 163, 184, .28);
  --text: #e6edf7;
  --muted: #9aa8c2;
  --faint: #6b7a95;
  --brand: #2dd4bf;
  --brand-ink: #022c27;
  --brand-soft: rgba(45, 212, 191, .13);
  --indigo: #818cf8;
  --indigo-soft: rgba(129, 140, 248, .14);
  --ok: #34d399;
  --ok-soft: rgba(52, 211, 153, .12);
  --err: #f87171;
  --err-soft: rgba(248, 113, 113, .11);
  --warn: #fbbf24;
  --warn-soft: rgba(251, 191, 36, .12);
  --code-bg: #0a1020;
  --shadow: 0 10px 40px rgba(0, 0, 0, .35);
  --radius: 16px;
  --font: "Space Grotesk", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
  --tA: #60a5fa; --tB: #a78bfa; --tC: #fbbf24; --tD: #34d399; --tE: #f87171; --tF: #f472b6; --tG: #22d3ee;
  --tk-kw: #c4a7ff; --tk-str: #a7f3a0; --tk-num: #fdba74; --tk-com: #64748b;
  --tk-def: #7dd3fc; --tk-op: #f9a8d4; --tk-var: #e6edf7; --tk-builtin: #fde68a;
  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg: #f4f6fb;
  --bg-glow: rgba(13, 148, 136, .08);
  --bg-glow-2: rgba(79, 70, 229, .06);
  --surface: #ffffff;
  --surface-2: #f1f4f9;
  --surface-3: #e2e8f2;
  --border: rgba(15, 26, 46, .10);
  --border-strong: rgba(15, 26, 46, .20);
  --text: #0f1a2e;
  --muted: #475672;
  --faint: #7f8ca3;
  --brand: #0d9488;
  --brand-ink: #ffffff;
  --brand-soft: rgba(13, 148, 136, .10);
  --indigo: #4f46e5;
  --indigo-soft: rgba(79, 70, 229, .08);
  --ok: #059669;
  --ok-soft: rgba(5, 150, 105, .09);
  --err: #dc2626;
  --err-soft: rgba(220, 38, 38, .07);
  --warn: #b45309;
  --warn-soft: rgba(217, 119, 6, .10);
  --code-bg: #f8fafd;
  --shadow: 0 10px 30px rgba(15, 26, 46, .08);
  --tA: #2563eb; --tB: #7c3aed; --tC: #b45309; --tD: #047857; --tE: #dc2626; --tF: #db2777; --tG: #0e7490;
  --tk-kw: #7c3aed; --tk-str: #15803d; --tk-num: #c2410c; --tk-com: #94a3b8;
  --tk-def: #0369a1; --tk-op: #be185d; --tk-var: #0f1a2e; --tk-builtin: #a16207;
  color-scheme: light;
}

/* ============ Base ============ */
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: var(--font);
  background: var(--bg);
  background-image:
    radial-gradient(900px 500px at 90% -10%, var(--bg-glow), transparent 60%),
    radial-gradient(700px 420px at -10% 10%, var(--bg-glow-2), transparent 60%);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.55;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
body.no-scroll { overflow: hidden; }
a { color: inherit; }
button { font: inherit; color: inherit; cursor: pointer; }
code, pre, .CodeMirror { font-family: var(--mono); font-variant-ligatures: none; }
.hidden { display: none !important; }
::selection { background: var(--brand-soft); }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--brand); color: var(--brand-ink); padding: 8px 12px; border-radius: 8px; z-index: 200; }
.skip:focus { left: 8px; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
main:focus { outline: none; }

/* ============ Top bar ============ */
.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 14px;
  padding: 10px 24px;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.logo { display: flex; align-items: center; gap: 8px; text-decoration: none; }
.logo-mark { font-size: 24px; }
.logo-text { font-size: 19px; font-weight: 500; letter-spacing: -.02em; display: flex; flex-direction: column; line-height: 1.05; }
.logo-text b { color: var(--brand); font-weight: 700; }
.logo-text small { font-size: 10.5px; color: var(--faint); letter-spacing: .08em; text-transform: uppercase; font-weight: 600; }
.nav { display: flex; gap: 4px; margin-left: 8px; }
.nav a { display: flex; align-items: center; gap: 6px; text-decoration: none; padding: 7px 12px; border-radius: 10px; font-size: 14px; color: var(--muted); font-weight: 500; }
.nav a:hover { color: var(--text); background: var(--surface-2); }
.nav a.on { color: var(--text); background: var(--surface-2); box-shadow: inset 0 -2px 0 var(--brand); }
.top-stats { display: flex; align-items: center; gap: 10px; margin-left: auto; }
.py-status { display: flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--muted); }
.py-status .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--warn); animation: pulse 1.2s infinite; }
.py-status.ready .dot { background: var(--ok); animation: none; }
.py-status.error .dot { background: var(--err); animation: none; }
.mast-top { display: flex; align-items: center; gap: 8px; text-decoration: none; padding: 3px 12px 3px 3px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--border); font-size: 13px; color: var(--muted); }
.mast-top b { color: var(--text); }
.mast-top .ring > span { display: none; }
.chip { display: inline-flex; align-items: center; gap: 4px; padding: 6px 12px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--border); font-size: 14px; white-space: nowrap; }
.chip.streak b { color: #fb923c; }
.icon-btn { width: 36px; height: 36px; border-radius: 10px; background: transparent; border: 1px solid transparent; font-size: 17px; }
.icon-btn:hover { background: var(--surface-2); border-color: var(--border); }

/* ============ Layout ============ */
main { max-width: 1260px; margin: 0 auto; padding: 26px 24px 80px; }
.page-enter { animation: fadeUp .3s ease both; }
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.pad { padding: 20px 22px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.section-title { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin: 34px 0 14px; flex-wrap: wrap; }
.section-title h2 { margin: 0; font-size: 22px; letter-spacing: -.02em; }
.section-title span { color: var(--muted); font-size: 14px; }
.crumbs { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); margin-bottom: 12px; flex-wrap: wrap; }
.crumbs a { text-decoration: none; }
.crumbs a:hover { color: var(--text); text-decoration: underline; }
.h-sec { margin: 18px 0 8px; font-size: 14px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); font-weight: 600; }
.h-sec:first-child { margin-top: 0; }
.h-sec.ok { color: var(--ok); }
.h-sec.no { color: var(--err); }
.row-between { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-top: 8px; flex-wrap: wrap; }

/* ============ Buttons, pills, badges ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 16px; border-radius: 12px; border: 1px solid var(--border);
  background: var(--surface-2); font-weight: 600; font-size: 14.5px; text-decoration: none;
  transition: transform .12s, background .2s, border-color .2s, box-shadow .2s;
}
.btn:hover { border-color: var(--border-strong); transform: translateY(-1px); }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--brand); color: var(--brand-ink); border-color: transparent; box-shadow: 0 6px 22px color-mix(in srgb, var(--brand) 30%, transparent); }
.btn.run { background: var(--ok); color: #03261b; border-color: transparent; }
:root[data-theme="light"] .btn.run { color: #fff; }
.btn.ghost { background: transparent; }
.btn.danger { color: var(--err); }
.btn.small { padding: 7px 12px; font-size: 13px; border-radius: 10px; }
.btn[disabled] { opacity: .45; pointer-events: none; }
.btn .kbd { font-size: 11px; opacity: .75; font-family: var(--mono); font-weight: 400; max-width: 240px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pill { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; font-weight: 600; padding: 3px 9px; border-radius: 99px; background: var(--surface-3); white-space: nowrap; }
.pill.now { background: var(--brand-soft); color: var(--brand); }
.pill.warn { background: var(--warn-soft); color: var(--warn); }
.pill.ok { background: var(--ok-soft); color: var(--ok); }
.eyebrow { display: inline-flex; gap: 6px; align-items: center; font-size: 12.5px; font-weight: 600; color: var(--brand); background: var(--brand-soft); padding: 5px 12px; border-radius: 99px; }
.lvl { font-size: 12px; font-weight: 600; padding: 3px 9px; border-radius: 99px; white-space: nowrap; background: var(--surface-3); color: var(--muted); }
.lvl-1 { background: var(--ok-soft); color: var(--ok); }
.lvl-2 { background: color-mix(in srgb, var(--tG) 14%, transparent); color: var(--tG); }
.lvl-3 { background: color-mix(in srgb, var(--tA) 14%, transparent); color: var(--tA); }
.lvl-4 { background: color-mix(in srgb, var(--tB) 15%, transparent); color: var(--tB); }
.lvl-5 { background: color-mix(in srgb, var(--tE) 14%, transparent); color: var(--tE); }
.type { font-size: 12px; font-weight: 600; padding: 3px 9px; border-radius: 99px; white-space: nowrap; }
.t-A { --tc: var(--tA); } .t-B { --tc: var(--tB); } .t-C { --tc: var(--tC); } .t-D { --tc: var(--tD); }
.t-E { --tc: var(--tE); } .t-F { --tc: var(--tF); } .t-G { --tc: var(--tG); }
.type { background: color-mix(in srgb, var(--tc) 14%, transparent); color: var(--tc); }
code.tool { display: inline-block; font-size: 12.5px; color: var(--indigo); background: var(--indigo-soft); padding: 3px 8px; border-radius: 8px; }
code.tool.big { font-size: 14px; margin-top: 6px; }

/* ============ Ring & bars ============ */
.ring { --p: 0; --s: 84px; width: var(--s); height: var(--s); border-radius: 50%; flex: none;
  background: conic-gradient(var(--brand) calc(var(--p) * 1%), var(--surface-3) 0); display: grid; place-items: center; }
.ring > span { width: calc(var(--s) - 14px); height: calc(var(--s) - 14px); border-radius: 50%; background: var(--surface); display: grid; place-items: center; font-weight: 700; font-size: calc(var(--s) * .22); }
.mast-top .ring { background: conic-gradient(var(--brand) calc(var(--p) * 1%), var(--surface-3) 0); }
.mast-top .ring::after { content: ""; width: 20px; height: 20px; border-radius: 50%; background: var(--surface-2); }
.bar { --c: var(--brand); flex: 1; height: 7px; border-radius: 99px; background: var(--surface-3); overflow: hidden; min-width: 40px; }
.bar i { display: block; height: 100%; background: var(--c); border-radius: 99px; transition: width .5s; }

/* ============ Home ============ */
.hero { display: grid; grid-template-columns: 1.45fr 1fr; gap: 18px; margin-bottom: 8px; }
.hero-main { padding: 32px; border-radius: 22px; background: linear-gradient(150deg, var(--surface) 0%, var(--surface-2) 100%); border: 1px solid var(--border); position: relative; overflow: hidden; }
.hero-main::after { content: ""; position: absolute; right: -80px; top: -80px; width: 260px; height: 260px; border-radius: 50%; background: radial-gradient(circle, var(--brand-soft), transparent 70%); }
.hero h1 { font-size: clamp(28px, 3.8vw, 44px); line-height: 1.08; letter-spacing: -.035em; margin: 14px 0 12px; }
.hl { background: linear-gradient(90deg, var(--brand), var(--indigo)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { color: var(--muted); font-size: 16.5px; max-width: 640px; margin: 0 0 18px; }
.lead.small { font-size: 15px; }
.method { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin: 0 0 20px; }
.mstep { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 600; padding: 6px 10px; border-radius: 10px; background: var(--surface-3); border: 1px solid var(--border); }
.mstep b { width: 18px; height: 18px; display: grid; place-items: center; border-radius: 50%; background: var(--brand); color: var(--brand-ink); font-size: 11px; }
.marrow { color: var(--faint); font-size: 13px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 4px; }
.hero-cta.center { justify-content: center; }
.hero-side { padding: 22px; display: flex; flex-direction: column; gap: 14px; }
.hs-top { display: flex; align-items: center; gap: 16px; }
.hs-top h3 { margin: 0 0 2px; font-size: 17px; }
.hs-top p { margin: 0; }
.hs-foot { display: flex; justify-content: space-between; gap: 10px; font-size: 13px; color: var(--muted); border-top: 1px solid var(--border); padding-top: 10px; flex-wrap: wrap; }
.skillbars { display: grid; gap: 7px; }
.sb { display: grid; grid-template-columns: 112px 1fr 44px; align-items: center; gap: 10px; font-size: 13px; color: var(--muted); }
.sb em { font-style: normal; text-align: right; color: var(--text); font-weight: 600; font-size: 12.5px; }

.route { display: grid; gap: 10px; position: relative; }
.route-item { --c: var(--brand); display: grid; grid-template-columns: 46px 52px 1fr; gap: 14px; align-items: center; padding: 14px 18px; border-radius: 18px; background: var(--surface); border: 1px solid var(--border); text-decoration: none; transition: transform .15s, border-color .2s; position: relative; }
.route-item:hover { transform: translateX(3px); border-color: color-mix(in srgb, var(--c) 45%, transparent); }
.route-item.current { border-color: color-mix(in srgb, var(--c) 60%, transparent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--c) 12%, transparent); }
.route-item:not(:last-child)::after { content: ""; position: absolute; left: 40px; bottom: -11px; width: 2px; height: 10px; background: var(--border-strong); }
.ri-num { font-family: var(--mono); font-size: 20px; font-weight: 600; color: var(--c); text-align: center; }
.ri-icon { width: 50px; height: 50px; border-radius: 14px; display: grid; place-items: center; font-size: 26px; background: color-mix(in srgb, var(--c) 14%, transparent); }
.ri-head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.ri-head h3 { margin: 0; font-size: 18px; letter-spacing: -.01em; }
.ri-body p { margin: 2px 0 8px; color: var(--muted); font-size: 14px; }
.ri-foot { display: flex; align-items: center; gap: 12px; font-size: 12.5px; color: var(--muted); }
.ri-foot span { white-space: nowrap; }

.phases { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; }
.phase { padding: 16px; border-radius: 16px; background: var(--surface); border: 1px solid var(--border); }
.phase .n { width: 28px; height: 28px; border-radius: 9px; display: grid; place-items: center; background: var(--brand-soft); color: var(--brand); font-weight: 700; margin-bottom: 8px; }
.phase h4 { margin: 0 0 4px; font-size: 15px; }
.phase p { margin: 0; color: var(--muted); font-size: 13px; }
.types-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 10px; }
.tcard { padding: 14px; border-radius: 14px; background: var(--surface); border: 1px solid var(--border); border-top: 3px solid var(--tc); display: flex; flex-direction: column; gap: 3px; }
.tcard .ti { font-size: 22px; }
.tcard small { color: var(--muted); font-size: 12.5px; line-height: 1.35; }
footer.foot { margin-top: 48px; padding-top: 22px; border-top: 1px solid var(--border); color: var(--faint); font-size: 13px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
footer.foot a { color: var(--muted); }

/* ============ Module ============ */
.mod-hero { --c: var(--brand); display: flex; align-items: center; gap: 18px; flex-wrap: wrap; padding: 22px; border-radius: 20px; background: linear-gradient(135deg, color-mix(in srgb, var(--c) 12%, var(--surface)) 0%, var(--surface) 70%); border: 1px solid var(--border); }
.mod-icon { width: 64px; height: 64px; border-radius: 18px; display: grid; place-items: center; font-size: 34px; background: color-mix(in srgb, var(--c) 18%, transparent); flex: none; }
.mod-num { font-family: var(--mono); font-size: 12px; color: var(--c); font-weight: 600; letter-spacing: .08em; text-transform: uppercase; }
.mod-hero h1, .c-hero h1 { margin: 0; font-size: 30px; letter-spacing: -.03em; line-height: 1.1; }
.mod-hero p { margin: 4px 0 0; color: var(--muted); max-width: 760px; }
.grow { flex: 1; min-width: 220px; }
.mh-side { display: flex; flex-direction: column; align-items: center; gap: 4px; color: var(--muted); font-size: 12px; }
.mh-actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 14px 0 6px; }
.mtabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin: 14px 0 18px; overflow-x: auto; scrollbar-width: thin; }
.mtabs a { padding: 10px 14px; text-decoration: none; color: var(--muted); font-weight: 600; font-size: 14.5px; border-bottom: 2px solid transparent; margin-bottom: -1px; white-space: nowrap; }
.mtabs a:hover { color: var(--text); }
.mtabs a.on { color: var(--text); border-bottom-color: var(--brand); }
.checks, .rules, .links, .signals { margin: 0; padding: 0; list-style: none; display: grid; gap: 7px; }
.checks li, .rules li, .signals li { position: relative; padding-left: 24px; font-size: 14.5px; }
.checks li::before { content: "✓"; position: absolute; left: 2px; color: var(--ok); font-weight: 700; }
.rules li::before { content: "•"; position: absolute; left: 6px; color: var(--brand); font-weight: 700; }
.signals li::before { content: "→"; position: absolute; left: 2px; color: var(--indigo); font-weight: 700; }
.links li a { color: var(--brand); }
.secs { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; counter-reset: s; }
.secs li { display: grid; gap: 5px; }
.secs a { display: flex; justify-content: space-between; gap: 10px; text-decoration: none; font-size: 14.5px; font-weight: 500; }
.secs a:hover .sn { color: var(--brand); }
.secs .sc { color: var(--muted); font-size: 13px; font-family: var(--mono); }
.matrix { padding: 6px; overflow-x: auto; }
.mx-row { display: grid; grid-template-columns: minmax(170px, 1.6fr) repeat(8, minmax(64px, 1fr)) 112px; align-items: center; gap: 4px; padding: 8px 10px; border-radius: 10px; text-decoration: none; min-width: 860px; }
a.mx-row:hover { background: var(--surface-2); }
.mx-head { font-size: 11.5px; color: var(--faint); text-transform: uppercase; letter-spacing: .04em; font-weight: 600; }
.mx-c { font-weight: 500; font-size: 14px; }
.mx-d { text-align: center; }
.mx-v { text-align: right; }
.dot { display: inline-block; width: 12px; height: 12px; border-radius: 50%; border: 2px solid var(--surface-3); }
.dot.on { background: var(--brand); border-color: var(--brand); }
.dot.half { background: linear-gradient(90deg, var(--brand) 50%, transparent 50%); border-color: var(--brand); }
.dot.na { border-style: dashed; opacity: .4; }
.mlabel { font-size: 11.5px; font-weight: 600; padding: 3px 8px; border-radius: 99px; white-space: nowrap; }
.mlabel.lv0 { background: var(--surface-3); color: var(--faint); }
.mlabel.lv1 { background: var(--indigo-soft); color: var(--indigo); }
.mlabel.lv2 { background: var(--warn-soft); color: var(--warn); }
.mlabel.lv3 { background: var(--brand-soft); color: var(--brand); }
.mlabel.lv4 { background: var(--ok-soft); color: var(--ok); }
.cgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; }
.ccard { --c: var(--brand); display: flex; flex-direction: column; gap: 8px; padding: 16px; border-radius: 16px; background: var(--surface); border: 1px solid var(--border); text-decoration: none; transition: transform .15s, border-color .2s; }
.ccard:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--c) 45%, transparent); }
.cc-top { display: flex; justify-content: space-between; gap: 8px; align-items: flex-start; }
.ccard h3 { margin: 0; font-size: 16px; line-height: 1.25; }
.ccard p { margin: 0; color: var(--muted); font-size: 13.5px; flex: 1; }
.filters { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.fchip { padding: 7px 12px; border-radius: 99px; border: 1px solid var(--border); background: var(--surface); font-size: 13px; font-weight: 500; }
.fchip small { color: var(--faint); margin-left: 2px; }
.fchip.on { background: var(--brand-soft); border-color: color-mix(in srgb, var(--brand) 50%, transparent); color: var(--text); }
.ex-list { display: grid; gap: 8px; }
.ex-row { display: flex; align-items: center; gap: 12px; padding: 11px 16px; border-radius: 14px; background: var(--surface); border: 1px solid var(--border); text-decoration: none; transition: border-color .2s, transform .15s; }
a.ex-row:hover { border-color: var(--border-strong); transform: translateX(3px); }
.ex-row .st { width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; background: var(--surface-3); font-size: 12.5px; font-weight: 700; color: var(--muted); flex: none; }
.ex-row.done .st { background: var(--ok); color: #03261b; }
.ex-row.tried .st { background: var(--warn-soft); color: var(--warn); }
.ex-row .t { flex: 1; font-weight: 500; min-width: 0; }
.ex-row.mini { padding: 7px 12px; margin-top: 6px; }
.ex-row.mini .st { width: 22px; height: 22px; font-size: 11px; }
.sec-title { margin: 16px 0 0; font-size: 12.5px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); font-weight: 600; }
.sec-title:first-child { margin-top: 0; }
.proj-title { margin: 10px 0 8px; font-size: 24px; letter-spacing: -.02em; }
.phase-list { margin: 0; padding-left: 22px; display: grid; gap: 14px; }
.pl-head { display: flex; flex-direction: column; }
.md-table.cheat td { vertical-align: top; font-size: 13.5px; }
.md-table.cheat ul { margin: 0; padding-left: 16px; }
.ex-nav { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.ex-bottom { max-width: 1260px; margin: 18px auto 0; }

/* ============ Concept page ============ */
.c-hero { --c: var(--brand); display: flex; align-items: center; gap: 18px; padding: 22px; border-radius: 20px; background: linear-gradient(135deg, color-mix(in srgb, var(--c) 12%, var(--surface)) 0%, var(--surface) 70%); border: 1px solid var(--border); flex-wrap: wrap; }
.dims { display: flex; flex-wrap: wrap; gap: 6px; margin: 12px 0 16px; }
.dim { font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 99px; border: 1px solid var(--border); color: var(--faint); cursor: help; }
.dim.on { background: var(--brand-soft); color: var(--brand); border-color: color-mix(in srgb, var(--brand) 40%, transparent); }
.dim.half { background: linear-gradient(90deg, var(--brand-soft) 50%, transparent 50%); color: var(--text); }
.dim.na { opacity: .45; text-decoration: line-through; }
.c-grid .md p:last-child { margin-bottom: 0; }
.cando { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.cando ul { margin: 0; padding-left: 18px; font-size: 14px; display: grid; gap: 5px; }
.prompt-box { position: relative; padding: 14px; border-radius: 12px; background: var(--indigo-soft); border: 1px dashed color-mix(in srgb, var(--indigo) 50%, transparent); }
.prompt-box p { margin: 0 0 10px; font-size: 14px; white-space: pre-wrap; }
.prompt-box.good { background: var(--ok-soft); border-color: color-mix(in srgb, var(--ok) 45%, transparent); }
.prompt-box.bad { background: var(--err-soft); border-color: color-mix(in srgb, var(--err) 40%, transparent); margin-top: 10px; }
.prompt-box .tag { display: block; font-size: 12px; font-weight: 700; margin-bottom: 6px; }
details.reveal { border: 1px solid var(--border); border-radius: 12px; background: var(--surface-2); }
details.reveal summary { cursor: pointer; padding: 10px 14px; font-weight: 600; font-size: 14px; }
details.reveal[open] summary { border-bottom: 1px solid var(--border); }
details.reveal > *:not(summary) { margin: 10px 14px; }

/* ============ Choice questions ============ */
.qcard .q { font-weight: 600; margin: 0 0 10px; }
.opts { display: grid; gap: 8px; }
.opt { text-align: left; padding: 11px 14px; border-radius: 12px; border: 1px solid var(--border); background: var(--surface-2); font-size: 14.5px; transition: border-color .15s, background .15s; }
.opt:hover:not([disabled]) { border-color: var(--brand); }
.opt.right { border-color: var(--ok); background: var(--ok-soft); }
.opt.wrong { border-color: var(--err); background: var(--err-soft); }
.opt[disabled] { cursor: default; }
.opt code, .segb code { font-size: .9em; }
.dk { margin-top: 8px; }
.fb { margin-top: 10px; }

/* ============ Exercise page ============ */
.ex-page { display: grid; grid-template-columns: minmax(330px, 430px) minmax(0, 1fr); gap: 18px; align-items: start; }
.lesson { padding: 20px; position: sticky; top: 74px; max-height: calc(100vh - 92px); overflow: auto; }
.lesson h1 { font-size: 24px; margin: 6px 0 4px; letter-spacing: -.025em; line-height: 1.15; }
.type-hint { margin: 0 0 12px; color: var(--muted); font-size: 13.5px; }
.ex-page { --tc: var(--brand); }
.lesson { border-top: 3px solid var(--tc); }
.dots { display: flex; gap: 5px; margin-bottom: 12px; flex-wrap: wrap; }
.dots a { width: 22px; height: 7px; border-radius: 99px; background: var(--surface-3); }
.dots a.done { background: var(--ok); }
.dots a.tried { background: var(--warn); opacity: .7; }
.dots a.current { outline: 2px solid var(--brand); outline-offset: 2px; }
.meta { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.md { font-size: 15px; }
.md p { margin: 0 0 11px; }
.md h4 { margin: 14px 0 6px; font-size: 15px; }
.md ul, .md ol { margin: 0 0 11px; padding-left: 20px; }
.md li { margin-bottom: 4px; }
.md code, .verdict code, .hint-box code, .model code, .ccard code, .fq code, .opt code { font-size: .88em; background: var(--surface-3); padding: 1px 6px; border-radius: 6px; }
pre.code, .md pre { background: var(--code-bg); border: 1px solid var(--border); border-radius: 12px; padding: 12px 14px; overflow-x: auto; font-size: 13px; line-height: 1.5; margin: 0 0 11px; }
pre.code code, .md pre code { background: none; padding: 0; font-size: inherit; }
pre.plain { background: var(--code-bg); border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; white-space: pre-wrap; font-size: 13px; margin: 6px 0; }
.problem { padding: 14px 16px; border-radius: 14px; background: var(--surface-2); border: 1px solid var(--border); margin-bottom: 12px; }
.problem p:last-child { margin-bottom: 0; }
.cchips { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-bottom: 12px; }
.cchip { font-size: 12.5px; padding: 4px 10px; border-radius: 99px; border: 1px solid color-mix(in srgb, var(--indigo) 40%, transparent); background: var(--indigo-soft); color: var(--text); }
.cchip:hover { border-color: var(--indigo); }
.tools { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 4px; }
.ladder { margin-top: 14px; border-top: 1px solid var(--border); padding-top: 14px; }
.ladder-head { display: flex; justify-content: space-between; align-items: baseline; }
.steps-row { display: flex; gap: 4px; margin: 6px 0 10px; }
.lstep { flex: 1; height: 6px; border-radius: 99px; background: var(--surface-3); font-size: 0; }
.lstep.on { background: var(--warn); }
.hint-box { margin: 0 0 10px; padding: 11px 13px; border-radius: 12px; background: var(--warn-soft); border: 1px dashed color-mix(in srgb, var(--warn) 45%, transparent); font-size: 14px; animation: fadeUp .25s ease; }
.hint-box p { margin: 0 0 6px; }
.hint-box p:last-child { margin: 0; }
.hint-box .hl { font-size: 11.5px; text-transform: uppercase; letter-spacing: .06em; font-weight: 700; color: var(--warn); margin-bottom: 4px; }
.hint-box.sol { background: var(--err-soft); border-color: color-mix(in srgb, var(--err) 35%, transparent); }
.hint-box.sol .hl { color: var(--err); }
.hint-box h5 { margin: 10px 0 4px; font-size: 13.5px; }
.mini-concept { margin-bottom: 8px; }
.mini-concept p { margin: 3px 0 0; }
.plan-model { margin: 0; padding-left: 18px; font-size: 14px; }
.workspace, #ws { display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.ws-title { margin: 6px 0 -6px; }
.ws-sub { margin: 0; }
.stepper, .steps3 { display: flex; gap: 6px; flex-wrap: wrap; }
.sstep { display: inline-flex; align-items: center; gap: 6px; padding: 6px 11px; border-radius: 99px; font-size: 12.5px; font-weight: 600; background: var(--surface); border: 1px solid var(--border); color: var(--muted); }
.sstep b { width: 18px; height: 18px; border-radius: 50%; display: grid; place-items: center; background: var(--surface-3); font-size: 11px; }
.sstep.on { color: var(--text); border-color: color-mix(in srgb, var(--ok) 50%, transparent); }
.sstep.on b { background: var(--ok); color: #03261b; }
.sstep.opt { opacity: .55; }
.steps3 { margin-bottom: 14px; }
.lbl { display: block; font-weight: 600; font-size: 14px; margin: 4px 0 6px; }
.ta { width: 100%; resize: vertical; padding: 11px 13px; border-radius: 12px; border: 1px solid var(--border-strong); background: var(--surface-2); color: var(--text); font: inherit; font-size: 14.5px; line-height: 1.5; }
.ta:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px var(--brand-soft); }
.ta[readonly] { opacity: .8; }
.cnt { font-size: 12px; color: var(--faint); font-family: var(--mono); }
.cnt.ok { color: var(--ok); }
.tools-pick { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.tpick { padding: 7px 12px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface-2); font-size: 13.5px; }
.tpick.on { border-color: var(--brand); background: var(--brand-soft); }
.tpick.on::before { content: "✓ "; color: var(--brand); font-weight: 700; }
.plan-card .pc-head { display: flex; justify-content: space-between; align-items: center; }
.plan-card .pc-summary { display: none; font-size: 14px; }
.plan-card.collapsed .pc-body { display: none; }
.plan-card.collapsed .pc-summary { display: block; }
.plan-card.collapsed .h-sec { margin-bottom: 6px; }
.impl { position: relative; display: flex; flex-direction: column; gap: 14px; }
.impl .lock-msg { display: none; }
.impl.locked > *:not(.lock-msg) { opacity: .35; pointer-events: none; filter: blur(1.5px); user-select: none; }
.impl.locked .lock-msg { display: block; position: absolute; top: 90px; left: 50%; transform: translateX(-50%); z-index: 5; padding: 12px 18px; border-radius: 12px; background: var(--surface); border: 1px solid var(--border-strong); box-shadow: var(--shadow); font-weight: 600; white-space: nowrap; }
.ck { display: flex; align-items: flex-start; gap: 8px; font-size: 14px; cursor: pointer; }
.ck input { margin-top: 3px; accent-color: var(--brand); width: 16px; height: 16px; flex: none; }
.ai-ck { color: var(--muted); }
.checklist { display: grid; gap: 8px; margin-bottom: 12px; }

.editor-card { overflow: hidden; }
.editor-head { display: flex; align-items: center; justify-content: space-between; padding: 9px 12px 9px 16px; border-bottom: 1px solid var(--border); gap: 10px; flex-wrap: wrap; }
.file-tab { display: flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 13px; color: var(--muted); }
.file-tab i { width: 10px; height: 10px; border-radius: 50%; background: var(--tc); }
.editor-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.CodeMirror { height: auto; min-height: 200px; font-size: 14px; line-height: 1.6; background: var(--code-bg); color: var(--tk-var); padding: 8px 0; }
.CodeMirror-scroll { min-height: 200px; max-height: 480px; }
.CodeMirror-gutters { background: var(--code-bg); border-right: 1px solid var(--border); }
.CodeMirror-linenumber { color: var(--faint); }
.CodeMirror-cursor { border-left: 2px solid var(--brand); }
.CodeMirror-selected, .CodeMirror-focused .CodeMirror-selected { background: var(--brand-soft) !important; }
.CodeMirror-matchingbracket { color: var(--brand) !important; text-decoration: underline; }
.cm-err-line { background: var(--err-soft); }
.cm-keyword { color: var(--tk-kw); }
.cm-string, .cm-string-2 { color: var(--tk-str); }
.cm-number { color: var(--tk-num); }
.cm-comment { color: var(--tk-com); font-style: italic; }
.cm-def { color: var(--tk-def); }
.cm-operator { color: var(--tk-op); }
.cm-variable, .cm-variable-2 { color: var(--tk-var); }
.cm-builtin { color: var(--tk-builtin); }
.cm-property { color: var(--tk-def); }
.cm-atom { color: var(--tk-num); }
.output { overflow: hidden; }
.out-head { display: flex; align-items: center; justify-content: space-between; padding: 9px 16px; border-bottom: 1px solid var(--border); font-size: 13px; color: var(--muted); }
.out-body { padding: 16px; min-height: 110px; }
.placeholder { color: var(--faint); font-size: 14px; text-align: center; padding: 22px 10px; }
.placeholder .big { font-size: 30px; display: block; margin-bottom: 6px; }
.running-bar { height: 3px; background: linear-gradient(90deg, transparent, var(--brand), var(--indigo), transparent); background-size: 200% 100%; animation: slide 1s linear infinite; }
.verdict { display: flex; gap: 12px; align-items: flex-start; padding: 13px 15px; border-radius: 14px; margin-bottom: 12px; animation: pop .3s ease; }
.verdict.small { padding: 9px 12px; font-size: 14px; margin: 0; display: block; }
.verdict.ok { background: var(--ok-soft); border: 1px solid color-mix(in srgb, var(--ok) 40%, transparent); }
.verdict.bad { background: var(--err-soft); border: 1px solid color-mix(in srgb, var(--err) 35%, transparent); }
.verdict.info { background: var(--indigo-soft); border: 1px solid color-mix(in srgb, var(--indigo) 35%, transparent); }
.verdict .emo { font-size: 26px; line-height: 1; }
.verdict h4 { margin: 0 0 3px; font-size: 16px; }
.verdict.ok h4 { color: var(--ok); }
.verdict.bad h4 { color: var(--err); }
.verdict p { margin: 0 0 4px; font-size: 14px; }
.verdict .tip { color: var(--muted); }
.stdout { background: var(--code-bg); border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; font-size: 13px; white-space: pre-wrap; margin: 0 0 12px; max-height: 240px; overflow: auto; }
.label { font-size: 11.5px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--faint); margin: 0 0 6px; }
.table-wrap { overflow: auto; max-height: 420px; border-radius: 10px; border: 1px solid var(--border); }
table.df { border-collapse: collapse; width: 100%; font-size: 13px; font-family: var(--mono); }
table.df th, table.df td { padding: 6px 12px; text-align: right; border-bottom: 1px solid var(--border); white-space: nowrap; }
table.df thead th { position: sticky; top: 0; background: var(--surface-2); color: var(--muted); font-weight: 600; z-index: 1; }
table.df tbody th { color: var(--faint); font-weight: 400; background: var(--surface); }
table.df tbody tr:hover td { background: var(--brand-soft); }
.shape { font-size: 12px; color: var(--faint); padding: 6px 2px 0; font-family: var(--mono); }
pre.val { margin: 0 0 4px; font-size: 14.5px; padding: 11px 13px; background: var(--code-bg); border-radius: 10px; border: 1px solid var(--border); white-space: pre-wrap; overflow-x: auto; }
.plot { background: #fff; border-radius: 12px; padding: 8px; border: 1px solid var(--border); margin-bottom: 12px; text-align: center; }
.plot img { max-width: 100%; height: auto; }
.done-box { border-color: color-mix(in srgb, var(--ok) 40%, transparent); background: linear-gradient(135deg, var(--ok-soft), var(--surface) 70%); }
.done-box h3 { margin: 0 0 12px; font-size: 17px; }
.model { margin-top: 8px; padding: 10px 12px; border-radius: 10px; background: var(--brand-soft); border: 1px solid color-mix(in srgb, var(--brand) 30%, transparent); font-size: 14px; }
.selfrate { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-top: 8px; }
.seg { display: flex; flex-wrap: wrap; gap: 6px; }
.segb { padding: 7px 12px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface-2); font-size: 13.5px; text-align: left; }
.segb.on { border-color: var(--brand); background: var(--brand-soft); }
.segb.right { border-color: var(--ok); background: var(--ok-soft); }
.segb.wrong { border-color: var(--err); background: var(--err-soft); }
.plan-form { display: grid; gap: 16px; margin-bottom: 16px; }
.pf label { display: block; font-weight: 600; font-size: 14.5px; margin-bottom: 6px; }
.pf-fb:empty { display: none; }
.pf-fb { margin-top: 8px; }
.fq { display: grid; grid-template-columns: 28px 1fr; gap: 10px; padding: 12px 0; border-bottom: 1px solid var(--border); }
.fq:last-child { border-bottom: 0; }
.fq-n { width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center; background: var(--surface-3); font-weight: 700; font-size: 13px; }
.fq .q { font-weight: 600; margin: 0 0 8px; }
.prompt-ladder { display: grid; gap: 10px; }
.pl-item { padding: 12px; border-radius: 12px; border: 1px solid var(--border); background: var(--surface-2); }
.pl-item.last { border-color: color-mix(in srgb, var(--err) 35%, transparent); }
.pl-h { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.reflect { border-color: color-mix(in srgb, var(--tF) 40%, transparent); }

/* ============ Callouts & tables (contenido) ============ */
.callout { margin: 0 0 12px; padding: 10px 14px; border-radius: 12px; font-size: 14px; border: 1px solid var(--border); background: var(--surface-2); }
.callout p:last-child { margin-bottom: 0; }
.callout.work { background: var(--indigo-soft); border-color: color-mix(in srgb, var(--indigo) 30%, transparent); }
.callout.warn { background: var(--err-soft); border-color: color-mix(in srgb, var(--err) 30%, transparent); }
.callout.tip { background: var(--ok-soft); border-color: color-mix(in srgb, var(--ok) 30%, transparent); }
.callout.ai { background: var(--indigo-soft); border-color: color-mix(in srgb, var(--indigo) 30%, transparent); }
.callout.transfer { background: color-mix(in srgb, var(--tG) 10%, transparent); border-color: color-mix(in srgb, var(--tG) 35%, transparent); }
.md-table { overflow-x: auto; margin: 0 0 12px; border: 1px solid var(--border); border-radius: 12px; }
.md-table table { border-collapse: collapse; width: 100%; font-size: 13.5px; }
.md-table th, .md-table td { padding: 8px 12px; text-align: left; border-bottom: 1px solid var(--border); }
.md-table th { background: var(--surface-2); color: var(--muted); font-weight: 600; }
.md-table tr:last-child td { border-bottom: 0; }

/* ============ IA page ============ */
.ia-hero { margin-bottom: 16px; }
.ia-hero h1 { margin: 10px 0 8px; font-size: clamp(26px, 3.4vw, 38px); letter-spacing: -.03em; }
.no-yes h3 { margin: 0 0 6px; }
.no-yes.no { border-top: 3px solid var(--err); }
.no-yes.yes { border-top: 3px solid var(--ok); }
.big-q { font-size: 20px; font-weight: 600; margin: 4px 0 8px; }
.ten { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; }
.ten li { display: flex; gap: 10px; align-items: flex-start; padding: 14px; border-radius: 14px; background: var(--surface); border: 1px solid var(--border); font-size: 14px; }
.ten .n { width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center; font-weight: 700; flex: none; font-size: 13px; }
.ten li.self .n, .lg.self::before { background: var(--brand-soft); color: var(--brand); }
.ten li.ask .n, .lg.ask::before { background: var(--warn-soft); color: var(--warn); }
.ten li.own .n, .lg.own::before { background: var(--indigo-soft); color: var(--indigo); }
.legend-row { display: flex; gap: 16px; margin-top: 10px; font-size: 13px; color: var(--muted); flex-wrap: wrap; }
.lg::before { content: ""; display: inline-block; width: 12px; height: 12px; border-radius: 4px; margin-right: 6px; vertical-align: -1px; }
.prompts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 16px; }
.prompt-card h4 { margin: 0 0 6px; }
.prompt-card p { margin: 0 0 10px; font-size: 13.5px; color: var(--muted); }
.rules.plain li::before { content: "→"; color: var(--brand); }

/* ============ Progress ============ */
.journal { display: grid; gap: 10px; grid-template-columns: repeat(2, 1fr); }
.jitem p { margin: 6px 0 0; font-size: 14px; white-space: pre-wrap; }
.jh { display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.jh a { text-decoration: none; }
.backup { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

/* ============ Quiz ============ */
.quiz-title { margin: 10px 0 6px; font-size: 34px; letter-spacing: -.03em; }
.quiz-page { max-width: 820px; margin: 0 auto; }
.qprog { margin-bottom: 14px; }
.qbig { padding: 26px; }
.q-meta { margin-bottom: 10px; }
.q-meta .pill { background: color-mix(in srgb, var(--c) 14%, transparent); }
.scenario { font-size: 17px; }
.q-ask { font-weight: 600; color: var(--muted); margin: 0 0 10px; }
.q-foot { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-top: 14px; flex-wrap: wrap; }
.q-foot a { color: var(--brand); }

/* ============ Modal / toasts ============ */
.modal { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 16px; background: rgba(3, 8, 20, .62); backdrop-filter: blur(4px); animation: fade .2s; }
.modal-card { width: min(640px, 100%); max-height: 88vh; overflow: auto; background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 22px; box-shadow: var(--shadow); animation: pop .3s ease; }
.modal-card.wide { width: min(900px, 100%); }
.modal-card.center { text-align: center; width: min(440px, 100%); padding: 30px 26px; }
.modal-card .big-emoji { font-size: 60px; display: block; }
.modal-card h2 { margin: 8px 0 6px; font-size: 24px; letter-spacing: -.02em; }
.modal-card p { color: var(--muted); margin: 0 0 16px; }
.modal-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; gap: 10px; }
.modal-top h2 { margin: 0; font-size: 20px; }
.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }
.tab { padding: 7px 12px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface-2); font-family: var(--mono); font-size: 13px; }
.tab.on { background: var(--brand); color: var(--brand-ink); border-color: transparent; font-weight: 600; }
.dtypes { font-family: var(--mono); font-size: 12px; color: var(--muted); margin: 0 0 10px; }
.toasts { position: fixed; right: 18px; bottom: 18px; z-index: 120; display: flex; flex-direction: column; gap: 10px; align-items: flex-end; }
.toast { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-radius: 14px; background: var(--surface); border: 1px solid var(--border-strong); box-shadow: var(--shadow); animation: toastIn .35s ease; max-width: 360px; }
.toast .ico { font-size: 24px; }
.toast b { display: block; }
.toast small { color: var(--muted); }
.toast.out { animation: toastOut .3s ease forwards; }

/* ============ Animations ============ */
@keyframes fadeUp { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@keyframes fade { from { opacity: 0; } }
@keyframes pop { 0% { opacity: 0; transform: scale(.96); } 100% { opacity: 1; transform: none; } }
@keyframes pulse { 50% { opacity: .35; } }
@keyframes slide { to { background-position: -200% 0; } }
@keyframes toastIn { from { opacity: 0; transform: translateY(16px); } }
@keyframes toastOut { to { opacity: 0; transform: translateX(30px); } }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

/* ============ Responsive ============ */
@media (max-width: 1100px) {
  .phases { grid-template-columns: repeat(3, 1fr); }
  .ten { grid-template-columns: repeat(2, 1fr); }
  .prompts { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 980px) {
  .hero, .grid-2, .ex-page { grid-template-columns: 1fr; }
  .lesson { position: static; max-height: none; }
  .journal { grid-template-columns: 1fr; }
  .nav .nt { display: none; }
  .nav a { padding: 7px 10px; font-size: 17px; }
}
@media (max-width: 680px) {
  .topbar { padding: 8px 12px; gap: 6px; }
  main { padding: 18px 16px 64px; }
  .logo-text, .py-status .txt, .mast-top .mt-txt { display: none; }
  .mast-top { padding: 3px; }
  .nav { margin-left: 0; gap: 0; }
  .nav a { padding: 6px 8px; }
  .chip { padding: 5px 9px; font-size: 13px; }
  .hero-main { padding: 22px; }
  .phases { grid-template-columns: repeat(2, 1fr); }
  .ten, .prompts { grid-template-columns: 1fr; }
  .cando { grid-template-columns: 1fr; }
  .route-item { grid-template-columns: 34px 1fr; padding: 12px 14px; }
  .route-item .ri-icon { display: none; }
  .route-item::after { display: none; }
  .ri-foot { flex-direction: column; align-items: stretch; gap: 4px; }
  .ri-foot span { white-space: normal; }
  .sb { grid-template-columns: 96px 1fr 40px; }
  .mod-hero, .c-hero { padding: 16px; }
  .mod-hero h1, .c-hero h1 { font-size: 24px; }
  .mh-side { flex-direction: row; }
  .btn .kbd { display: none; }
  .ex-row { flex-wrap: wrap; gap: 8px; }
  .ex-row .t { flex-basis: calc(100% - 44px); }
  .lesson { padding: 16px; }
  .CodeMirror { font-size: 13px; }
  .toasts { left: 16px; right: 16px; align-items: stretch; }
  .toast { max-width: none; }
  .impl.locked .lock-msg { white-space: normal; width: 86%; text-align: center; }
  .qbig { padding: 18px; }
  .scenario { font-size: 16px; }
}