:root{
  --ink:#1e2542;          /* deep indigo (editor bg) */
  --ink-2:#161c34;        /* chrome bar */
  --ink-3:#272f52;
  --gutter:#3f4a76;
  --muted:#7a85af;
  --cream:#f7f5f0;
  --paper:#fdfcf9;
  --paper-2:#f4f1e9;
  --coral:#ff6b6b;
  --sunny:#ffd166;
  --mint:#38d9a9;
  --sky:#56c5f0;
  --lilac:#a78bfa;
  --body-ink:#2c3350;
  --card-line:#e7e2d6;
  --radius:16px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Baloo 2',system-ui,sans-serif;
  color:var(--body-ink);
  background:var(--paper);
  line-height:1.55;
}
.mono{font-family:'JetBrains Mono',monospace}
a{color:inherit}
img{max-width:100%}

/* ---------- utility ---------- */
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
.eyebrow{
  font-family:'JetBrains Mono',monospace;
  font-size:.85rem;font-weight:600;letter-spacing:.02em;
  color:var(--muted);
}
.eyebrow .slash{color:var(--mint)}
section{padding:72px 0}
h2{font-size:clamp(1.7rem,3.4vw,2.4rem);font-weight:800;line-height:1.15;margin:.35em 0 .4em}
.section-head{max-width:640px;margin-bottom:40px}
.section-head p{color:#5b6480;font-size:1.05rem}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.5em;
  font-family:'Baloo 2',sans-serif;font-weight:700;font-size:1rem;
  padding:.72em 1.4em;border-radius:12px;border:none;cursor:pointer;
  text-decoration:none;transition:transform .15s ease, box-shadow .15s ease;
}
.btn:hover{transform:translateY(-2px)}
.btn:focus-visible{outline:3px solid var(--sky);outline-offset:2px}
.btn-primary{background:var(--sunny);color:var(--ink)}
.btn-primary:hover{box-shadow:0 8px 20px rgba(255,209,102,.35)}
.btn-ghost{background:transparent;color:var(--cream);border:2px solid var(--gutter)}
.btn-ghost:hover{border-color:var(--sky);color:var(--sky)}
.btn-mint{background:var(--mint);color:var(--ink)}
.btn-mint:hover{box-shadow:0 8px 20px rgba(56,217,169,.35)}

/* ---------- nav ---------- */
header{
  position:sticky;top:0;z-index:50;
  background:rgba(30,37,66,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--ink-3);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:.6em;text-decoration:none;color:var(--cream);font-weight:800;font-size:1.15rem}
.logo .mark{
  font-family:'JetBrains Mono',monospace;font-weight:700;font-size:.95rem;
  background:var(--ink-3);color:var(--mint);
  padding:.25em .5em;border-radius:8px;
}
.nav ul{display:flex;gap:28px;list-style:none}
.nav ul a{
  color:#c8cee6;text-decoration:none;font-weight:600;font-size:.95rem;
}
.nav ul a:hover{color:var(--sunny)}
.cart-badge{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:18px;height:18px;padding:0 5px;margin-left:4px;
  background:var(--sunny);color:var(--ink);border-radius:999px;
  font-family:'JetBrains Mono',monospace;font-size:.68rem;font-weight:700;
}
.nav .btn{padding:.5em 1.1em;font-size:.92rem}
@media(max-width:760px){.nav ul{display:none}}

/* ---------- hero ---------- */
.hero{
  background:var(--ink);
  color:var(--cream);
  padding:64px 0 88px;
  position:relative;overflow:hidden;
}
.hero .dots{
  position:absolute;inset:0;
  background-image:radial-gradient(circle, #29324f 1.5px, transparent 1.6px);
  background-size:30px 30px;opacity:.7;pointer-events:none;
}
.hero .watermark{
  position:absolute;right:-40px;top:20px;
  font-family:'JetBrains Mono',monospace;font-weight:700;
  font-size:clamp(14rem,26vw,24rem);line-height:1;
  color:#273052;user-select:none;pointer-events:none;
}
.editor{
  position:relative;
  background:var(--ink);
  border:1px solid var(--ink-3);
  border-radius:18px;
  box-shadow:0 30px 60px rgba(0,0,0,.35);
  overflow:hidden;
}
.editor-bar{
  display:flex;align-items:center;gap:10px;
  background:var(--ink-2);
  padding:14px 20px;
}
.dot{width:13px;height:13px;border-radius:50%}
.dot.r{background:var(--coral)}.dot.y{background:var(--sunny)}.dot.g{background:var(--mint)}
.tab{
  margin-left:18px;
  font-family:'JetBrains Mono',monospace;font-size:.8rem;color:#c8cee6;
  background:var(--ink);
  padding:.45em .9em;border-radius:9px 9px 0 0;
  display:flex;align-items:center;gap:.6em;
  transform:translateY(9px);
}
.tab .unsaved{width:8px;height:8px;border-radius:50%;background:var(--sunny)}
.editor-body{display:flex;padding:44px 40px 52px;gap:28px;position:relative}
.gutter{
  font-family:'JetBrains Mono',monospace;font-size:.85rem;color:var(--gutter);
  display:flex;flex-direction:column;gap:1.6em;
  border-right:1px solid #303a60;padding-right:18px;user-select:none;
}
.hero-copy{max-width:640px}
.hero-copy .comment{
  font-family:'JetBrains Mono',monospace;font-size:1rem;color:var(--muted);
  margin-bottom:14px;
}
h1{
  font-size:clamp(2.6rem,6vw,4.4rem);
  font-weight:800;line-height:1.05;letter-spacing:-.01em;
}
h1 .c1{color:var(--cream)}
h1 .c2{color:var(--sunny)}
.cursor{
  display:inline-block;width:.16em;height:.85em;
  background:var(--mint);border-radius:3px;
  margin-left:.12em;vertical-align:baseline;
  animation:blink 1.1s steps(1) infinite;
}
@keyframes blink{50%{opacity:0}}
.typeline{
  font-family:'JetBrains Mono',monospace;
  font-size:clamp(.85rem,1.8vw,1.05rem);font-weight:600;
  margin:22px 0 34px;min-height:1.6em;
}
.typeline .p{color:var(--muted)}
.tk-sky{color:var(--sky)}.tk-coral{color:var(--coral)}
.tk-lilac{color:var(--lilac)}.tk-sunny{color:var(--sunny)}.tk-mint{color:var(--mint)}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{
  display:flex;gap:34px;margin-top:40px;flex-wrap:wrap;
}
.stat .num{font-weight:800;font-size:1.5rem;color:var(--cream)}
.stat .lbl{font-family:'JetBrains Mono',monospace;font-size:.75rem;color:var(--muted)}
.codebars{
  position:absolute;right:44px;top:110px;
  display:flex;flex-direction:column;gap:16px;
}
.codebars .row{display:flex;gap:10px}
.bar{height:12px;border-radius:6px}
@media(max-width:900px){.codebars{display:none}.hero .watermark{opacity:.5}}
@media(max-width:640px){.editor-body{padding:32px 22px 40px}.gutter{display:none}}

/* ---------- trust strip ---------- */
.trust{
  background:var(--ink-2);
  padding:16px 0;
}
.trust .wrap{
  display:flex;justify-content:center;gap:12px 40px;flex-wrap:wrap;
  font-family:'JetBrains Mono',monospace;font-size:.8rem;color:#aab3d6;
}
.trust span b{color:var(--sunny);font-weight:600}

/* ---------- worksheets ---------- */
#shop{background:var(--paper)}
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:32px}
.chip{
  font-family:'JetBrains Mono',monospace;font-size:.8rem;font-weight:600;
  padding:.5em 1em;border-radius:999px;cursor:pointer;
  background:var(--paper-2);border:1.5px solid var(--card-line);color:#5b6480;
  transition:all .15s ease;
}
.chip:hover{border-color:var(--ink)}
.chip.active{background:var(--ink);color:var(--sunny);border-color:var(--ink)}
.grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));
  gap:26px;
}
.card{
  background:#fff;border:1.5px solid var(--card-line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .18s ease, box-shadow .18s ease;
}
.card:hover{transform:translateY(-5px);box-shadow:0 18px 34px rgba(30,37,66,.12)}
.cover{
  position:relative;height:150px;display:flex;align-items:center;justify-content:center;
  font-family:'JetBrains Mono',monospace;font-weight:700;font-size:2.6rem;color:rgba(255,255,255,.95);
}
.cover .ftype{
  position:absolute;top:12px;left:12px;
  font-size:.66rem;font-weight:600;letter-spacing:.05em;
  background:rgba(22,28,52,.55);color:#fff;
  padding:.35em .7em;border-radius:6px;
}
.cover .grade{
  position:absolute;top:12px;right:12px;
  font-size:.66rem;font-weight:600;
  background:#fff;color:var(--ink);
  padding:.35em .7em;border-radius:6px;
}
.card-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.card-body h3{font-size:1.08rem;font-weight:700;line-height:1.3}
.card-body .desc{font-size:.88rem;color:#68708c;flex:1}
.meta{display:flex;align-items:center;gap:.5em;font-size:.8rem;color:#8a90a8}
.stars{color:var(--sunny);letter-spacing:.05em}
.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:8px}
.price{font-family:'JetBrains Mono',monospace;font-weight:700;font-size:1.05rem;color:var(--ink)}
.price .free{color:var(--mint)}
.add{
  font-family:'Baloo 2',sans-serif;font-weight:700;font-size:.88rem;
  background:var(--ink);color:var(--cream);
  border:none;border-radius:10px;padding:.55em 1em;cursor:pointer;
  transition:background .15s ease;
}
.add:hover{background:#2b345e}
.add.added{background:var(--mint);color:var(--ink)}
.shop-more{text-align:center;margin-top:44px}

/* ---------- why / features ---------- */
#why{background:var(--paper-2)}
.feat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:24px}
.feat{
  background:#fff;border:1.5px solid var(--card-line);border-radius:var(--radius);
  padding:26px 24px;
}
.feat .kw{
  font-family:'JetBrains Mono',monospace;font-weight:700;font-size:.85rem;
  display:inline-block;padding:.3em .7em;border-radius:8px;margin-bottom:14px;
}
.kw.sky{background:#e3f4fd;color:#1d7fb1}
.kw.coral{background:#ffe9e9;color:#d64545}
.kw.lilac{background:#f0eaff;color:#7c5cd6}
.kw.mint{background:#e0f8f0;color:#0f9d6e}
.feat h3{font-size:1.15rem;font-weight:800;margin-bottom:6px}
.feat p{font-size:.92rem;color:#5b6480}

/* ---------- testimonials ---------- */
.quote-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.quote{
  background:var(--ink);color:#dfe3f2;border-radius:var(--radius);
  padding:28px 26px;position:relative;
}
.quote .qmark{
  font-family:'JetBrains Mono',monospace;color:var(--gutter);
  font-size:.85rem;margin-bottom:12px;display:block;
}
.quote p{font-size:.97rem;line-height:1.6}
.quote .who{
  margin-top:18px;display:flex;align-items:center;gap:12px;
}
.avatar{
  width:42px;height:42px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;color:var(--ink);font-size:1rem;
}
.who .name{font-weight:700;color:var(--cream);font-size:.92rem}
.who .role{font-family:'JetBrains Mono',monospace;font-size:.72rem;color:var(--muted)}

/* ---------- freebie CTA ---------- */
#freebie .panel{
  background:var(--ink);border-radius:22px;color:var(--cream);
  padding:56px 48px;display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:center;
  position:relative;overflow:hidden;
}
#freebie .panel::after{
  content:"{ }";position:absolute;right:24px;bottom:-30px;
  font-family:'JetBrains Mono',monospace;font-weight:700;font-size:9rem;color:#273052;
}
#freebie h2{color:var(--cream)}
#freebie p{color:#aab3d6}
.signup{display:flex;gap:10px;margin-top:22px;flex-wrap:wrap}
.signup input{
  flex:1;min-width:220px;
  font-family:'JetBrains Mono',monospace;font-size:.9rem;
  background:var(--ink-2);border:1.5px solid var(--ink-3);color:var(--cream);
  border-radius:12px;padding:.8em 1em;
}
.signup input:focus{outline:none;border-color:var(--mint)}
.signup input::placeholder{color:var(--gutter)}
.terminal{
  font-family:'JetBrains Mono',monospace;font-size:.82rem;
  background:var(--ink-2);border:1px solid var(--ink-3);border-radius:14px;
  padding:22px;line-height:2;position:relative;z-index:1;
}
.terminal .ln{display:block}
.terminal .p{color:var(--mint)}
.terminal .cmt{color:var(--muted)}
.msg{font-family:'JetBrains Mono',monospace;font-size:.8rem;margin-top:12px;color:var(--mint);min-height:1.4em}
@media(max-width:820px){#freebie .panel{grid-template-columns:1fr;padding:40px 28px}}

/* ---------- footer ---------- */
footer{
  background:var(--ink-2);color:#aab3d6;
  padding:44px 0 30px;
}
.foot{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
.foot .logo{font-size:1.05rem}
.foot ul{list-style:none;display:flex;gap:22px;flex-wrap:wrap}
.foot a{text-decoration:none;font-size:.9rem}
.foot a:hover{color:var(--sunny)}
.credit{
  margin-top:26px;text-align:center;
  font-family:'JetBrains Mono',monospace;font-size:.72rem;color:var(--gutter);
}
/* ---------- worksheet detail ---------- */
.crumb{
  font-family:'JetBrains Mono',monospace;font-size:.82rem;color:var(--muted);
  display:flex;gap:.5em;flex-wrap:wrap;margin-bottom:28px;
}
.crumb a{text-decoration:none;color:var(--muted)}
.crumb a:hover{color:var(--sunny)}
.crumb .sep{color:var(--gutter)}
.crumb .current{color:var(--cream)}
#detail{background:var(--ink);color:var(--cream);padding:44px 0 64px;position:relative;overflow:hidden}
.detail-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:48px;align-items:start;position:relative;z-index:1}
.detail-cover{
  aspect-ratio:4/3;border-radius:var(--radius);
  display:flex;align-items:center;justify-content:center;position:relative;
  font-family:'JetBrains Mono',monospace;font-weight:700;font-size:5rem;color:rgba(255,255,255,.95);
  box-shadow:0 24px 48px rgba(0,0,0,.3);
}
.detail-cover .ftype{
  position:absolute;top:16px;left:16px;
  font-size:.72rem;font-weight:600;letter-spacing:.05em;
  background:rgba(22,28,52,.55);color:#fff;
  padding:.4em .8em;border-radius:6px;
}
.detail-cover .grade{
  position:absolute;top:16px;right:16px;
  font-size:.72rem;font-weight:600;
  background:#fff;color:var(--ink);
  padding:.4em .8em;border-radius:6px;
}
.detail-info h1{font-size:clamp(2rem,4vw,2.8rem)}
.detail-meta{display:flex;align-items:center;gap:.6em;font-size:.92rem;color:var(--muted);margin:14px 0}
.detail-desc{color:#c8cee6;font-size:1.02rem;max-width:56ch}
.detail-price{display:flex;align-items:center;gap:18px;margin:26px 0}
.detail-price .price{font-size:1.7rem}
.detail-ctas{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:8px}
.detail-included{
  margin-top:30px;display:flex;flex-direction:column;gap:10px;
  font-family:'JetBrains Mono',monospace;font-size:.88rem;color:#c8cee6;
}
.detail-included li{list-style:none;display:flex;gap:.6em;align-items:baseline}
.detail-included .ok{color:var(--mint)}
@media(max-width:820px){.detail-grid{grid-template-columns:1fr}}

#standards{background:var(--paper-2)}
.std-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}
.std{
  background:#fff;border:1.5px solid var(--card-line);border-radius:var(--radius);
  padding:20px 22px;
}
.std .code{
  font-family:'JetBrains Mono',monospace;font-weight:700;font-size:.85rem;color:var(--lilac);
  display:block;margin-bottom:8px;
}
.std p{font-size:.9rem;color:#5b6480}

#preview .grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}
.pg{
  aspect-ratio:8.5/11;border-radius:12px;border:1.5px solid var(--card-line);
  background:#fff;display:flex;align-items:center;justify-content:center;
  font-family:'JetBrains Mono',monospace;color:var(--muted);font-size:.85rem;
  flex-direction:column;gap:8px;
}
.pg .pgnum{font-size:2rem;font-weight:800;color:var(--card-line)}

#related .grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}

/* ---------- auth ---------- */
#auth{
  background:var(--ink);color:var(--cream);min-height:calc(100vh - 64px);
  display:flex;align-items:center;padding:64px 0;position:relative;overflow:hidden;
}
.auth-panel{
  max-width:440px;margin:0 auto;width:100%;position:relative;z-index:1;
  background:var(--ink-2);border:1px solid var(--ink-3);border-radius:var(--radius);
  padding:40px 36px;
}
.auth-panel .eyebrow{margin-bottom:6px}
.auth-panel h1{font-size:clamp(1.7rem,3vw,2.1rem);margin-bottom:8px}
.auth-panel .sub{color:#aab3d6;font-size:.95rem;margin-bottom:28px}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:18px}
.field label{
  font-family:'JetBrains Mono',monospace;font-size:.78rem;color:var(--muted);
}
.field input{
  font-family:'JetBrains Mono',monospace;font-size:.92rem;
  background:var(--ink);border:1.5px solid var(--ink-3);color:var(--cream);
  border-radius:12px;padding:.8em 1em;
}
.field input:focus{outline:none;border-color:var(--mint)}
.field input::placeholder{color:var(--gutter)}
.field-row{display:flex;justify-content:space-between;align-items:center;font-size:.85rem;margin-bottom:22px}
.field-row a{color:var(--sky);text-decoration:none}
.field-row a:hover{color:var(--sunny)}
.remember{display:flex;align-items:center;gap:.5em;color:#c8cee6}
.auth-panel .btn{width:100%;justify-content:center}
.auth-switch{
  margin-top:22px;text-align:center;font-size:.9rem;color:#aab3d6;
}
.auth-switch a{color:var(--sunny);text-decoration:none;font-weight:600}
.auth-switch a:hover{color:var(--sky)}
.auth-divider{
  display:flex;align-items:center;gap:14px;margin:26px 0;
  font-family:'JetBrains Mono',monospace;font-size:.75rem;color:var(--gutter);
}
.auth-divider::before,.auth-divider::after{content:"";flex:1;height:1px;background:var(--ink-3)}

/* ---------- cart ---------- */
#cart{background:var(--paper);min-height:calc(100vh - 64px)}
.cart-layout{display:grid;grid-template-columns:1fr 340px;gap:40px;align-items:start}
.cart-items{display:flex;flex-direction:column;gap:16px}
.cart-item{
  display:flex;gap:18px;background:#fff;border:1.5px solid var(--card-line);
  border-radius:var(--radius);padding:16px;align-items:center;
}
.cart-item .thumb{
  width:76px;height:76px;border-radius:12px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  font-family:'JetBrains Mono',monospace;font-weight:700;font-size:1.6rem;color:rgba(255,255,255,.95);
}
.cart-item .info{flex:1;min-width:0}
.cart-item h3{font-size:1rem;font-weight:700;margin-bottom:4px}
.cart-item .desc{font-size:.82rem;color:#8a90a8}
.cart-item .price{font-family:'JetBrains Mono',monospace;font-weight:700;color:var(--ink)}
.cart-item .remove{
  font-family:'JetBrains Mono',monospace;font-size:.78rem;color:var(--coral);
  background:none;border:none;cursor:pointer;text-decoration:underline;
}
.cart-empty{
  text-align:center;padding:60px 20px;color:#8a90a8;
  background:#fff;border:1.5px dashed var(--card-line);border-radius:var(--radius);
}
.cart-empty .mono{font-size:2.2rem;color:var(--card-line);display:block;margin-bottom:14px}
.cart-summary{
  background:var(--ink);color:var(--cream);border-radius:var(--radius);
  padding:26px 24px;position:sticky;top:88px;
}
.cart-summary h3{font-size:1.05rem;font-weight:800;margin-bottom:18px}
.sum-row{display:flex;justify-content:space-between;font-size:.92rem;color:#c8cee6;margin-bottom:10px}
.sum-row.total{
  color:var(--cream);font-weight:800;font-size:1.1rem;
  border-top:1px solid var(--ink-3);padding-top:14px;margin-top:14px;
}
.sum-row .mono{color:inherit}
.cart-summary .btn{width:100%;justify-content:center;margin-top:8px}
.promo{display:flex;gap:8px;margin-top:18px}
.promo input{
  flex:1;font-family:'JetBrains Mono',monospace;font-size:.85rem;
  background:var(--ink-2);border:1.5px solid var(--ink-3);color:var(--cream);
  border-radius:10px;padding:.65em .9em;
}
.promo input::placeholder{color:var(--gutter)}
@media(max-width:820px){.cart-layout{grid-template-columns:1fr}.cart-summary{position:static}}

/* ---------- legal pages ---------- */
.legal{background:var(--paper)}
.legal-content{max-width:760px}
.legal-content h2{font-size:1.9rem;margin-bottom:.2em}
.legal-content .updated{
  font-family:'JetBrains Mono',monospace;font-size:.82rem;color:var(--muted);margin-bottom:32px;
}
.legal-content h3{font-size:1.15rem;font-weight:800;margin:32px 0 10px}
.legal-content p{font-size:.98rem;color:#454c68;margin-bottom:14px}
.legal-content ul{margin:0 0 14px 1.3em;color:#454c68;font-size:.98rem}
.legal-content li{margin-bottom:6px}
.legal-content a{color:#1d7fb1;text-decoration:underline}
.legal-nav{
  display:flex;gap:20px;flex-wrap:wrap;margin-bottom:36px;
  font-family:'JetBrains Mono',monospace;font-size:.85rem;
}
.legal-nav a{color:var(--muted);text-decoration:none}
.legal-nav a.active{color:var(--ink);font-weight:700;text-decoration:underline}

@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}