/* ============================================================
   THE GROWTH YARD — /learn shared stylesheet
   Tokens + chrome mirror index.html; long-form styles are new.
   ============================================================ */
:root{
  --bg:#05060a;--bg-2:#0a0c14;
  --surface:rgba(255,255,255,.04);--surface-2:rgba(255,255,255,.06);--border:rgba(255,255,255,.09);
  --text:#eef1f7;--muted:#9aa3b5;--faint:#8891a5;
  --cyan:#38e1ff;--violet:#9b6bff;--pink:#ff6bd6;
  --grad:linear-gradient(115deg,#38e1ff 0%,#9b6bff 50%,#ff6bd6 100%);
  --grad-soft:linear-gradient(115deg,rgba(56,225,255,.18),rgba(155,107,255,.18) 50%,rgba(255,107,214,.18));
  --maxw:1180px;--r:18px;
  --font-display:'Space Grotesk',system-ui,sans-serif;--font-body:'Inter',system-ui,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:84px;-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{background:var(--bg);color:var(--text);font-family:var(--font-body);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;-webkit-tap-highlight-color:transparent}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

.bg-fx{position:fixed;inset:0;z-index:-2;overflow:hidden}
.bg-fx::before{content:"";position:absolute;inset:-20%;
  background:radial-gradient(40% 50% at 15% 10%,rgba(56,225,255,.16),transparent 60%),
            radial-gradient(45% 55% at 85% 20%,rgba(155,107,255,.18),transparent 60%),
            radial-gradient(50% 60% at 50% 100%,rgba(255,107,214,.10),transparent 60%);
  filter:blur(10px)}
.grid-overlay{position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:64px 64px;mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 40%,transparent 100%)}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{padding:96px 0;position:relative}
.eyebrow{font-family:var(--font-display);font-size:.78rem;letter-spacing:.22em;text-transform:uppercase;color:var(--cyan);font-weight:600;margin-bottom:18px;display:inline-flex;align-items:center;gap:10px}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--grad)}
h1,h2,h3{font-family:var(--font-display);line-height:1.08;letter-spacing:-.02em}
.gradient-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* nav */
header{position:fixed;top:0;left:0;right:0;z-index:50;transition:.3s}
header.scrolled{background:rgba(5,6,10,.7);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:18px 24px;padding-left:max(24px,env(safe-area-inset-left));padding-right:max(24px,env(safe-area-inset-right));max-width:var(--maxw);margin:0 auto}
.logo{font-family:var(--font-display);font-weight:700;font-size:1.15rem;letter-spacing:.02em;display:flex;align-items:center;gap:10px}
.logo .dot{width:11px;height:11px;border-radius:50%;background:var(--grad);box-shadow:0 0 16px var(--cyan)}
.nav-links{display:flex;gap:34px;align-items:center}
.nav-links a{color:var(--muted);font-size:.92rem;font-weight:500;transition:.2s}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.btn{font-family:var(--font-display);font-weight:600;font-size:.92rem;padding:11px 22px;min-height:44px;border-radius:999px;cursor:pointer;border:none;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:.25s;white-space:nowrap}
.btn-primary{background:var(--grad);color:#06070c;box-shadow:0 8px 30px rgba(155,107,255,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 40px rgba(155,107,255,.5)}
.btn-primary:disabled{opacity:.55;transform:none;cursor:default;box-shadow:none}
.btn-ghost{background:var(--surface);color:var(--text);border:1px solid var(--border)}
.btn-ghost:hover{background:var(--surface-2);border-color:rgba(255,255,255,.2)}
.btn-lg{padding:16px 34px;font-size:1.05rem}
.nav-toggle{display:none;background:none;border:none;color:var(--text);cursor:pointer;padding:9px;margin:-9px;border-radius:10px}
.nav-toggle:active{background:var(--surface)}
.lesson-pill{font-family:var(--font-display);font-size:.74rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);background:var(--surface);border:1px solid var(--border);border-radius:999px;padding:7px 14px;white-space:nowrap}

/* hero (hub + course landing) */
.t-hero{padding-top:150px;padding-bottom:20px}
.t-hero .backlink{color:var(--muted);font-size:.9rem;display:inline-flex;gap:7px;margin-bottom:22px;transition:.2s}
.t-hero .backlink:hover{color:var(--text)}
.t-hero h1{font-size:clamp(2.3rem,6vw,4.2rem);font-weight:700;max-width:19ch}
.t-hero p.lead{font-size:clamp(1.05rem,2vw,1.25rem);color:var(--muted);max-width:62ch;margin:24px 0 32px}
.honest-note{display:inline-flex;align-items:flex-start;gap:10px;margin-top:6px;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:14px 18px;max-width:64ch;color:var(--faint);font-size:.9rem}
.honest-note b{color:var(--text);font-weight:600}

/* hub course cards */
.hub-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:14px}
.course-card{background:var(--surface);border:1px solid var(--border);border-radius:24px;padding:34px;display:flex;flex-direction:column;gap:14px;transition:.25s}
.course-card:hover{border-color:rgba(255,255,255,.2);transform:translateY(-3px)}
.course-card .ctag{font-family:var(--font-display);font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--cyan);font-weight:600}
.course-card h3{font-size:1.5rem;font-weight:700}
.course-card p{color:var(--muted);font-size:.97rem}
.course-card .meta{display:flex;gap:16px;flex-wrap:wrap;color:var(--faint);font-size:.84rem}
.course-card .meta span{display:inline-flex;align-items:center;gap:6px}
.course-card .cta-row{margin-top:auto;padding-top:8px}
.course-card.soon{opacity:.75}
.course-card.soon:hover{transform:none;border-color:var(--border)}
.course-card.soon .ctag{color:var(--violet)}

/* course landing lesson list */
.lesson-list{display:flex;flex-direction:column;gap:12px;max-width:760px}
.lesson-row{display:grid;grid-template-columns:auto 1fr auto;gap:20px;align-items:center;background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:20px 24px;transition:.25s}
.lesson-row:hover{border-color:rgba(255,255,255,.22);background:var(--surface-2)}
.lesson-row .num{font-family:var(--font-display);font-weight:700;font-size:1.5rem;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;min-width:34px}
.lesson-row h3{font-size:1.08rem;font-weight:600;margin-bottom:3px}
.lesson-row p{color:var(--muted);font-size:.9rem}
.lesson-row .go{color:var(--muted);font-size:1.2rem;transition:.2s}
.lesson-row:hover .go{color:var(--text);transform:translateX(3px)}

/* facts strip (course landing) */
.fact-strip{display:flex;gap:14px;flex-wrap:wrap;margin:26px 0 8px}
.fact{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:12px 18px;font-size:.88rem;color:var(--muted)}
.fact b{color:var(--text);font-weight:600;font-family:var(--font-display)}

/* ---------- lesson pages ---------- */
.lesson-main{padding-top:130px;padding-bottom:40px}
.progress-seg{display:flex;gap:6px;max-width:68ch;margin:0 0 22px}
.progress-seg a{flex:1;padding:14px 0;display:block}
.progress-seg a::before{content:"";display:block;height:5px;border-radius:999px;background:rgba(255,255,255,.08);transition:.2s}
.progress-seg a:hover::before{background:rgba(255,255,255,.2)}
.progress-seg a.done::before{background:var(--grad)}
.progress-seg a.current::before{background:var(--grad);outline:1px solid rgba(255,255,255,.35);outline-offset:2px}
.lesson-time{font-family:var(--font-display);font-size:.74rem;font-weight:600;letter-spacing:.08em;color:var(--faint);background:var(--surface);border:1px solid var(--border);border-radius:999px;padding:5px 12px;margin-left:12px;white-space:nowrap;vertical-align:2px}
.lesson-eyebrow{font-family:var(--font-display);font-size:.74rem;letter-spacing:.2em;text-transform:uppercase;color:var(--cyan);font-weight:600;margin-bottom:14px}
.lesson-title{font-size:clamp(1.9rem,4.6vw,3rem);font-weight:700;max-width:22ch;margin-bottom:10px}
.lesson-sub{color:var(--muted);font-size:1.05rem;max-width:60ch;margin-bottom:34px}

.lesson-prose{max-width:68ch;font-size:1.02rem;line-height:1.75;color:var(--text)}
.lesson-prose h2{font-size:1.45rem;font-weight:700;margin:44px 0 14px}
.lesson-prose h3{font-size:1.12rem;font-weight:600;margin:32px 0 10px}
.lesson-prose p{margin:0 0 18px;color:#cdd3e0}
.lesson-prose strong{color:var(--text)}
.lesson-prose ul,.lesson-prose ol{margin:0 0 18px;padding-left:24px;color:#cdd3e0}
.lesson-prose li{margin-bottom:8px}
.lesson-prose a{color:var(--cyan);border-bottom:1px solid rgba(56,225,255,.35);transition:.2s}
.lesson-prose a:hover{border-bottom-color:var(--cyan)}
.lesson-prose code{font-family:var(--font-mono);font-size:.88em;background:var(--surface-2);border:1px solid var(--border);border-radius:6px;padding:2px 7px;color:var(--text);white-space:nowrap}
.lesson-prose pre{background:linear-gradient(180deg,#080a12,#05060a);border:1px solid var(--border);border-radius:14px;padding:18px 20px;overflow-x:auto;margin:0 0 18px}
.lesson-prose pre code{background:none;border:none;padding:0;white-space:pre;display:block;font-size:.9rem;line-height:1.6;color:#cfe3ff}

/* callouts */
.note{display:flex;gap:12px;align-items:flex-start;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:16px 20px;margin:0 0 18px;font-size:.93rem;color:var(--muted)}
.note b{color:var(--text)}
.note.tip{border-color:rgba(56,225,255,.3)}
.note.warn{border-color:rgba(255,107,214,.3)}

/* "what you'd type" prompt examples */
.prompt-box{background:var(--grad-soft);border:1px solid rgba(155,107,255,.35);border-radius:14px;padding:16px 20px;margin:0 0 18px}
.prompt-box .plabel{font-family:var(--font-display);font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;color:var(--violet);font-weight:600;margin-bottom:8px}
.prompt-box p{margin:0;color:var(--text);font-size:.95rem;line-height:1.65}
.prompt-box p+p{margin-top:10px}

/* prev/next */
.pn-bar{display:flex;justify-content:space-between;gap:14px;max-width:68ch;margin:48px 0 0;flex-wrap:wrap}
.pn-bar .spacer{flex:1}

/* footer soft pointer */
.biz-line{max-width:68ch;margin:40px 0 0;padding-top:22px;border-top:1px solid var(--border);color:var(--faint);font-size:.9rem}
.biz-line a{color:var(--cyan)}

/* ---------- terminal sim ---------- */
.tsim{max-width:68ch;margin:0 0 8px;border-radius:16px;overflow:hidden;border:1px solid var(--border);background:linear-gradient(180deg,#080a12,#05060a);box-shadow:0 24px 60px -28px rgba(0,0,0,.7)}
.tsim-bar{display:flex;align-items:center;gap:7px;padding:11px 15px;background:rgba(255,255,255,.03);border-bottom:1px solid var(--border)}
.tsim-bar .d{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.16)}
.tsim-title{font-family:var(--font-display);font-weight:600;font-size:.82rem;margin-left:8px;color:var(--muted)}
.tsim-tag{margin-left:auto;font-family:var(--font-display);font-size:.66rem;letter-spacing:.1em;text-transform:uppercase;color:var(--faint)}
.tsim-body{padding:16px 18px;font-family:var(--font-mono);font-size:.86rem;line-height:1.8;overflow-x:auto}
.tl{display:flex;gap:10px;align-items:flex-start;opacity:0;transform:translateY(6px);transition:.35s}
.tl.show{opacity:1;transform:none}
.tl .tg{flex:none;font-weight:700}
.tl.cmd .tg{color:var(--cyan)}
.tl.cmd .tx{color:var(--text)}
.tl.cmd.typing-line .tx::after{content:"▋";color:var(--cyan);animation:tsblink .9s steps(1) infinite;margin-left:1px}
@keyframes tsblink{50%{opacity:0}}
.tl.out .tx{color:var(--faint)}
.tl.agent .tg{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.tl.agent .tx{color:#cdd3e0;font-family:var(--font-body);font-size:.9rem}
.tl.ok .tg{color:var(--cyan)}
.tl.ok .tx{color:var(--text)}
.tsim-perm{display:flex;align-items:center;gap:14px;flex-wrap:wrap;border:1px solid rgba(155,107,255,.4);background:rgba(155,107,255,.08);border-radius:11px;padding:11px 14px;margin:6px 0}
.tsim-perm .tp-q{color:var(--text);font-size:.86rem;flex:1;min-width:14ch}
.tsim-chip{font-family:var(--font-display);font-size:.7rem;font-weight:600;letter-spacing:.04em;color:#06070c;background:var(--grad);padding:6px 14px;border-radius:8px;white-space:nowrap}
.tl.tdots{gap:5px;padding:6px 2px}
.tl.tdots i{width:7px;height:7px;border-radius:50%;background:var(--faint);animation:tdot 1.1s infinite}
.tl.tdots i:nth-child(2){animation-delay:.18s}
.tl.tdots i:nth-child(3){animation-delay:.36s}
@keyframes tdot{0%,60%,100%{transform:none;opacity:.4}30%{transform:translateY(-5px);opacity:1}}
.sim-note{max-width:68ch;font-size:.78rem;color:var(--faint);margin:0 0 18px;font-style:italic}

/* ---------- diagrams ---------- */
.diagram{max-width:68ch;margin:24px 0 18px}
.diagram svg{width:100%;height:auto;display:block}
.diagram figcaption{font-size:.82rem;color:var(--faint);margin-top:10px;text-align:center}
.dg-node{fill:var(--surface);stroke:rgba(255,255,255,.16);stroke-width:1.2}
.dg-node.hot{stroke:rgba(155,107,255,.5);fill:rgba(155,107,255,.08)}
.dg-t{fill:var(--text);font-family:var(--font-display);font-weight:600;font-size:14px}
.dg-m{fill:var(--muted);font-family:var(--font-body);font-size:11.5px}
.dg-f{fill:var(--faint);font-family:var(--font-body);font-size:11px}
.dg-cy{fill:var(--cyan)}
.dg-edge{stroke:#5a6478;stroke-width:1.5;fill:none}
.dg-flow{stroke-dasharray:6 6;animation:dgflow 1.4s linear infinite}
@keyframes dgflow{to{stroke-dashoffset:-12}}

/* ---------- checkpoint ---------- */
.checkpoint{max-width:68ch;background:var(--surface);border:1px solid rgba(56,225,255,.35);border-radius:14px;padding:18px 20px;margin:0 0 18px}
.cp-head{font-family:var(--font-display);font-size:.72rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--cyan);margin-bottom:12px}
.cp-head::before{content:"✓ ";font-weight:700}
.cp-mock pre{background:rgba(5,6,10,.7);border:1px solid var(--border);border-radius:10px;padding:13px 16px;overflow-x:auto;margin:0 0 12px}
.cp-mock pre code{font-family:var(--font-mono);font-size:.84rem;line-height:1.7;color:#cfe3ff;white-space:pre;display:block}
.cp-fail{font-size:.88rem;color:var(--muted);border-left:2px solid rgba(255,107,214,.5);padding-left:12px;margin:0}
.cp-fail code{white-space:nowrap}

/* ---------- recap ---------- */
.recap{max-width:68ch;border:1px solid var(--border);border-radius:14px;padding:20px 24px;margin:34px 0 0;background:var(--bg-2)}
.recap h3{font-size:1.05rem;font-weight:700;margin-bottom:12px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;display:inline-block}
.recap ul{list-style:none;margin:0;padding:0}
.recap li{margin-bottom:8px;color:#cdd3e0;font-size:.95rem}
.recap li::before{content:"✓";color:var(--cyan);margin-right:10px;font-weight:700}

/* ---------- slim subscribe ---------- */
.sub-slim{display:flex;align-items:center;gap:18px;flex-wrap:wrap;border:1px solid var(--border);border-radius:16px;padding:16px 20px;max-width:68ch;margin:40px 0 0;background:var(--surface)}
.sub-slim .ss-txt{color:var(--muted);font-size:.92rem;flex:1 1 22ch}
.sub-slim .ss-txt b{color:var(--text)}
.sub-slim .sub-form{flex:2 1 300px}
.sub-slim .sub-form input[type="email"]{padding:10px 18px}
.sub-slim .sub-form .btn{padding:10px 20px;min-height:40px}
.sub-slim .sub-status{flex-basis:100%;margin-top:0}
.sub-slim .sub-status:empty{display:none}

/* ---------- comparisons & mini frames ---------- */
.vs-split{display:grid;grid-template-columns:1fr 1fr;gap:14px;max-width:68ch;margin:0 0 18px}
.vs-cell{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:18px 20px;min-width:0}
.vs-tag{font-family:var(--font-display);font-size:.68rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;display:block;margin-bottom:10px}
.vs-tag.bad{color:var(--pink)}
.vs-tag.good{color:var(--cyan)}
.vs-cell p{margin:0 0 10px;color:#cdd3e0;font-size:.92rem}
.vs-cell p:last-child{margin-bottom:0}
.vs-cell ol,.vs-cell ul{margin:0;padding-left:20px;color:#cdd3e0;font-size:.92rem}
.vs-cell li{margin-bottom:6px}
.vs-cell pre{background:rgba(5,6,10,.7);border:1px solid var(--border);border-radius:10px;padding:12px 14px;overflow-x:auto;margin:0}
.vs-cell pre code{font-family:var(--font-mono);font-size:.82rem;color:#cfe3ff;white-space:pre;display:block}
.frame-duo{display:flex;gap:14px;align-items:stretch;max-width:68ch;margin:0 0 18px;flex-wrap:wrap}
.mini-frame{flex:1 1 200px;border:1px solid var(--border);border-radius:12px;overflow:hidden;background:#080a12}
.mini-frame.phone{flex:0 1 130px}
.mf-bar{display:flex;align-items:center;gap:5px;padding:7px 10px;background:rgba(255,255,255,.03);border-bottom:1px solid var(--border)}
.mf-bar .d{width:7px;height:7px;border-radius:50%;background:rgba(255,255,255,.16)}
.mf-url{flex:1;font-family:var(--font-mono);font-size:.62rem;color:var(--faint);background:rgba(255,255,255,.04);border-radius:6px;padding:3px 8px;margin-left:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mf-body{padding:16px 14px;min-height:110px;display:flex;flex-direction:column;gap:8px;align-items:center;justify-content:center;text-align:center}
.mf-label{font-size:.74rem;color:var(--faint);text-align:center;padding:8px 6px 10px}
.pcards{display:flex;gap:8px;width:100%}
.pcards .pc{flex:1;border:1px solid var(--border);border-radius:8px;padding:10px 6px;text-align:center}
.pcards .pc b{display:block;font-family:var(--font-display);font-size:.72rem;color:var(--muted)}
.pcards .pc .pv{font-family:var(--font-display);font-weight:700;font-size:.95rem;color:var(--text);margin-top:4px}
.pcards .pc.hot{border-color:rgba(155,107,255,.55);background:rgba(155,107,255,.08);position:relative}
.pcards .pc.hot::before{content:"POPULAR";position:absolute;top:-8px;left:50%;transform:translateX(-50%);font-family:var(--font-display);font-size:.5rem;letter-spacing:.1em;color:#06070c;background:var(--grad);border-radius:999px;padding:2px 8px}
.done-tick{font-weight:700;color:var(--cyan);margin-left:2px}

/* ---------- prompt anatomy marks ---------- */
.an-legend{display:flex;gap:14px;flex-wrap:wrap;margin:0 0 12px}
.an-legend span{font-family:var(--font-display);font-size:.7rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;padding:4px 12px;border-radius:999px;border:1px solid}
.an-legend .lg-ctx{color:var(--cyan);border-color:rgba(56,225,255,.4)}
.an-legend .lg-out{color:var(--violet);border-color:rgba(155,107,255,.4)}
.an-legend .lg-con{color:var(--pink);border-color:rgba(255,107,214,.4)}
mark.an-ctx,mark.an-out,mark.an-con{color:inherit;border-radius:4px;padding:1px 3px}
mark.an-ctx{background:rgba(56,225,255,.14);box-shadow:inset 0 -2px 0 rgba(56,225,255,.5)}
mark.an-out{background:rgba(155,107,255,.14);box-shadow:inset 0 -2px 0 rgba(155,107,255,.5)}
mark.an-con{background:rgba(255,107,214,.14);box-shadow:inset 0 -2px 0 rgba(255,107,214,.5)}

/* ---------- subscribe block ---------- */
.subscribe-block{background:var(--grad-soft);border:1px solid rgba(155,107,255,.35);border-radius:24px;padding:30px 34px;max-width:68ch;margin:48px 0 0}
.subscribe-block h3{font-size:1.25rem;font-weight:700;margin-bottom:6px}
.subscribe-block p{color:var(--muted);font-size:.94rem;margin-bottom:18px;max-width:56ch}
.sub-form{display:flex;gap:12px}
.sub-form input[type="email"]{flex:1;background:rgba(5,6,10,.6);border:1px solid var(--border);border-radius:999px;padding:13px 22px;color:var(--text);font-family:var(--font-body);font-size:1rem;transition:border-color .25s;min-width:0}
.sub-form input[type="email"]::placeholder{color:var(--faint)}
.sub-form input[type="email"]:focus{outline:none;border-color:var(--cyan)}
.sub-status{margin-top:12px;color:var(--faint);font-size:.86rem}
.sub-status.ok{color:var(--cyan)}
.sub-status.err{color:var(--pink)}

/* subscribed toast (?subscribed=1) */
.toast{position:fixed;bottom:26px;left:50%;transform:translateX(-50%);background:rgba(10,12,20,.95);border:1px solid rgba(56,225,255,.4);border-radius:999px;padding:13px 26px;font-family:var(--font-display);font-weight:600;font-size:.95rem;z-index:80;box-shadow:0 12px 40px rgba(0,0,0,.5)}

/* footer */
footer{border-top:1px solid var(--border);padding:50px 0 40px;margin-top:56px}
.foot{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px}
.foot-links{display:flex;gap:14px 22px;flex-wrap:wrap;justify-content:center}
.foot-links a{color:var(--muted);font-size:.9rem;transition:.2s}
.foot-links a:hover{color:var(--text)}
.foot .small{color:var(--faint);font-size:.85rem}

.reveal{opacity:0;transform:translateY(28px);transition:.7s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}
a:focus-visible,button:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
[hidden]{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

@media(max-width:900px){
  .nav-links{display:none}
  .nav-links.open{display:flex;position:absolute;top:70px;left:16px;right:16px;flex-direction:column;background:rgba(10,12,20,.97);backdrop-filter:blur(14px);border:1px solid var(--border);border-radius:16px;padding:22px;gap:18px}
  .nav-links.open a{padding:6px 2px}
  .nav-toggle{display:block}
  .hub-grid{grid-template-columns:1fr}
}
@media(max-width:640px){
  section{padding:72px 0}
  .wrap{padding:0 18px}
  .t-hero{padding-top:120px}
  .lesson-main{padding-top:110px}
  .lesson-row{grid-template-columns:auto 1fr;padding:18px 20px}
  .lesson-row .go{display:none}
  .sub-form{flex-direction:column}
  .sub-form .btn{width:100%}
  .subscribe-block{padding:24px 20px}
  .pn-bar .btn{flex:1}
  .foot{justify-content:center;text-align:center}
  .vs-split{grid-template-columns:1fr}
  .lesson-prose code,.cp-fail code{white-space:pre-wrap;word-break:break-word}
  .tsim-body{font-size:.8rem}
  .frame-duo{flex-direction:column}
  .mini-frame.phone{flex-basis:auto;max-width:170px;align-self:center}
  .lesson-time{margin-left:0;display:inline-block;margin-top:8px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}