/* ============ DailyCharter design system ============ */
:root{
  --ink:#13253A;        /* exam-booklet navy */
  --paper:#FBFAF7;      /* answer-sheet paper */
  --paper-2:#F2F0EA;    /* card paper */
  --ledger:#0E7C5B;     /* ledger green */
  --marker:#FFE86B;     /* highlighter yellow */
  --rule:#D8D4C8;       /* pencil rule */
  --muted:#5B6B7C;
  --error:#C0564F;
  --display:'Archivo',sans-serif;
  --body:'Public Sans',sans-serif;
  --mono:'IBM Plex Mono',monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}
body{
  font-family:var(--body);color:var(--ink);background:var(--paper);line-height:1.6;font-size:16.5px;
  /* faint ruled-paper texture, on brand with exam sheets */
  background-image:repeating-linear-gradient(transparent 0 31px, rgba(19,37,58,.035) 31px 32px);
}
::selection{background:var(--marker);color:var(--ink)}
a{color:var(--ledger)}
:focus-visible{outline:3px solid var(--ledger);outline-offset:2px;border-radius:2px}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
.wrap-narrow{max-width:760px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
header.site{border-bottom:1px solid var(--rule);background:var(--paper);position:sticky;top:0;z-index:10}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-family:var(--display);font-weight:800;font-stretch:110%;font-size:1.15rem;letter-spacing:-.01em;color:var(--ink);text-decoration:none}
.logo .dot{color:var(--ledger)}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a{color:var(--ink);text-decoration:none;font-size:.92rem;font-weight:500}
.nav-links a{position:relative}
.nav-links a:not(.btn)::after{content:"";position:absolute;left:0;right:100%;bottom:-3px;height:5px;background:var(--marker);z-index:-1;transition:right .18s ease}
.nav-links a:not(.btn):hover::after{right:0}
.nav-links a:hover{color:var(--ink)}
/* .btn inside the nav must keep its own text color (the generic
   .nav-links a rules above would paint it ink-on-ink = invisible) */
.nav-links a.btn,.nav-links a.btn:hover{color:#fff}
.nav-links a.btn-marker,.nav-links a.btn-marker:hover{color:var(--ink)}
.nav-links a[aria-current=page]{border-bottom:2px solid var(--marker)}

/* ---------- buttons ---------- */
.btn{display:inline-block;font-family:var(--display);font-weight:700;font-size:.95rem;background:var(--ink);color:#fff;padding:12px 22px;border:none;border-radius:6px;cursor:pointer;text-decoration:none;transition:transform .12s ease,background .12s ease;text-align:center}
.btn:hover{background:#1D3A57;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-marker{background:var(--marker);color:var(--ink)}
.btn-marker:hover{background:#FFF2A0}
.btn-block{display:block;width:100%}
.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none}

/* ---------- type & sections ---------- */
h1{font-family:var(--display);font-weight:800;font-stretch:115%;font-size:clamp(2.2rem,4.6vw,3.4rem);line-height:1.06;letter-spacing:-.02em;margin-bottom:20px}
h2{font-family:var(--display);font-weight:800;font-stretch:112%;font-size:clamp(1.6rem,3vw,2.2rem);letter-spacing:-.015em;margin-bottom:14px}
.eyebrow{font-family:var(--mono);font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ledger);margin-bottom:18px;display:block}
.hl{background:linear-gradient(180deg,transparent 55%,var(--marker) 55%,var(--marker) 92%,transparent 92%);padding:0 .08em}
section.band{padding:72px 0;border-bottom:1px solid var(--rule)}
.section-lede{color:var(--muted);max-width:56ch;margin-bottom:44px}
.page-head{padding:56px 0 40px;border-bottom:1px solid var(--rule)}
.page-head p{color:var(--muted);max-width:56ch}

/* ---------- hero ---------- */
.hero{padding:72px 0 64px;border-bottom:1px solid var(--rule)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero p.lede{font-size:1.12rem;color:var(--muted);max-width:44ch;margin-bottom:28px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero-note{font-family:var(--mono);font-size:.78rem;color:var(--muted);margin-top:14px}

/* ---------- pill card ---------- */
.pill{background:#fff;border:1px solid var(--rule);border-radius:10px;box-shadow:0 14px 40px rgba(19,37,58,.10);overflow:hidden;transition:box-shadow .2s ease,transform .2s ease}
.pill:hover{box-shadow:0 18px 48px rgba(19,37,58,.14)}
.pill.tilt{transform:rotate(.6deg);animation:pill-float 6s ease-in-out infinite}
@keyframes pill-float{
  0%,100%{transform:rotate(.6deg) translateY(0)}
  50%{transform:rotate(.6deg) translateY(-6px)}
}
.pill-top{display:flex;justify-content:space-between;align-items:center;padding:12px 18px;border-bottom:1px dashed var(--rule);font-family:var(--mono);font-size:.75rem;color:var(--muted);gap:10px;flex-wrap:wrap}
.pill-top .tag{background:var(--marker);color:var(--ink);font-weight:600;padding:2px 8px;border-radius:4px}
.pill-body{padding:22px 24px 24px}
.pill-body h3{font-family:var(--display);font-weight:700;font-size:1.15rem;margin-bottom:10px}
.pill-body p{font-size:.92rem;color:var(--ink);margin-bottom:14px}
.formula{font-family:var(--mono);font-size:.9rem;background:var(--paper-2);border-left:3px solid var(--ledger);padding:12px 14px;border-radius:0 6px 6px 0;margin-bottom:16px;overflow-x:auto}
.quiz{border-top:1px solid var(--rule);padding-top:14px}
.quiz .q{font-weight:600;font-size:.9rem;margin-bottom:10px}
.quiz button{display:block;width:100%;text-align:left;font-family:var(--body);font-size:.88rem;background:var(--paper);border:1px solid var(--rule);border-radius:6px;padding:9px 12px;margin-bottom:8px;cursor:pointer;color:var(--ink);transition:border-color .12s ease,background .12s ease}
.quiz button:hover{border-color:var(--ink)}
.quiz button.correct{background:#E7F5EF;border-color:var(--ledger)}
.quiz button.wrong{background:#FBEFEF;border-color:var(--error)}
.quiz .expl{display:none;font-size:.85rem;color:var(--muted);margin-top:6px}
.quiz .expl.show{display:block}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.step{background:#fff;border:1px solid var(--rule);border-radius:10px;padding:26px}
.step .n{font-family:var(--mono);font-size:.78rem;color:var(--ledger);display:block;margin-bottom:12px;letter-spacing:.06em}
.step h3{font-family:var(--display);font-weight:700;font-size:1.08rem;margin-bottom:8px}
.step p{font-size:.92rem;color:var(--muted)}

/* ---------- topics ---------- */
.topics{display:grid;grid-template-columns:repeat(2,1fr);gap:12px 40px}
.topic{display:grid;grid-template-columns:1fr auto;gap:6px 16px;align-items:baseline;padding:14px 0;border-bottom:1px dashed var(--rule)}
.topic .t-name{font-weight:600;font-size:.95rem}
.topic .t-w{font-family:var(--mono);font-size:.82rem;color:var(--muted)}
.topic .bar{grid-column:1/-1;height:6px;background:var(--paper-2);border-radius:3px;overflow:hidden}
.topic .bar i{display:block;height:100%;background:var(--ledger);border-radius:3px}
.weights-note{font-family:var(--mono);font-size:.75rem;color:var(--muted);margin-top:20px}

/* ---------- plans ---------- */
.plans{display:grid;grid-template-columns:1fr 1fr;gap:28px;max-width:760px}
.plan{background:#fff;border:1px solid var(--rule);border-radius:10px;padding:30px}
.plan.feat{border:2px solid var(--ink);position:relative}
.plan.feat::before{content:"Most chosen";position:absolute;top:-12px;left:24px;background:var(--marker);font-family:var(--mono);font-size:.72rem;padding:2px 10px;border-radius:4px;font-weight:600}
.plan h3{font-family:var(--display);font-weight:700;font-size:1.1rem;margin-bottom:6px}
.price{font-family:var(--display);font-weight:800;font-size:2.1rem;margin:10px 0 2px}
.price span{font-family:var(--body);font-weight:400;font-size:.9rem;color:var(--muted)}
.plan ul{list-style:none;margin:18px 0 24px}
.plan li{font-size:.92rem;padding:7px 0 7px 26px;position:relative;color:var(--ink)}
.plan li::before{content:"✓";position:absolute;left:0;color:var(--ledger);font-weight:700}

/* ---------- FAQ ---------- */
details{border-bottom:1px solid var(--rule);padding:18px 0}
summary{font-weight:600;cursor:pointer;font-size:1rem;list-style:none;display:flex;justify-content:space-between;align-items:center}
summary::after{content:"+";font-family:var(--mono);color:var(--ledger);font-size:1.2rem}
details[open] summary::after{content:"–"}
details p{margin-top:10px;color:var(--muted);font-size:.95rem;max-width:66ch}

/* ---------- signup band ---------- */
.signup{background:var(--ink);color:#fff;border-radius:14px;padding:56px 48px;text-align:center}
.signup h2{color:#fff}
.signup p{color:#B9C6D4;max-width:52ch;margin:0 auto 28px}
.signup form{display:flex;gap:12px;max-width:480px;margin:0 auto;flex-wrap:wrap;justify-content:center}
.signup input[type=email]{flex:1;min-width:240px;font-family:var(--body);font-size:1rem;padding:13px 16px;border-radius:6px;border:1px solid #3A5573;background:#1D3A57;color:#fff}
.signup input::placeholder{color:#8FA5BB}
.signup .fine{font-family:var(--mono);font-size:.74rem;color:#8FA5BB;margin-top:16px}
/* plan picker inside the dark signup band */
.plan-picker{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin:0 auto 24px}
.pp{background:#1D3A57;border:1.5px solid #3A5573;border-radius:10px;color:#B9C6D4;
    padding:12px 22px;cursor:pointer;font-family:var(--body);text-align:center;
    transition:border-color .12s ease,background .12s ease,transform .12s ease}
.pp:hover{border-color:#8FA5BB;transform:translateY(-1px)}
.pp b{display:block;font-family:var(--display);font-weight:800;font-size:1.25rem;color:#fff}
.pp span{font-family:var(--mono);font-size:.68rem;letter-spacing:.06em;text-transform:uppercase}
.pp.sel{background:#fff;border-color:var(--marker);box-shadow:0 0 0 2px var(--marker)}
.pp.pp-soon,.pp:disabled{opacity:.4;cursor:not-allowed}
.pp.pp-soon:hover{border-color:#3A5573;transform:none}
/* sample-quiz feedback (index/archive) */
.quiz .quiz-why{font-size:.8rem;color:var(--error);margin:4px 0 8px}
.quiz button:disabled{cursor:default}
.pp.sel b{color:var(--ink)}
.pp.sel span{color:var(--ledger)}
.signup input[type=text]{flex:1;min-width:170px;font-family:var(--body);font-size:1rem;
    padding:13px 16px;border-radius:6px;border:1px solid #3A5573;background:#1D3A57;color:#fff}

/* ---------- forms ---------- */
.field{margin-bottom:18px}
.field label{display:block;font-weight:600;font-size:.88rem;margin-bottom:6px}
.field input,.field select{width:100%;font-family:var(--body);font-size:1rem;padding:12px 14px;border:1px solid var(--rule);border-radius:6px;background:#fff;color:var(--ink)}
.field input:hover,.field select:hover{border-color:var(--muted)}
.field .hint{font-size:.78rem;color:var(--muted);margin-top:5px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}

/* ---------- checkout ---------- */
.checkout-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start;padding:56px 0 80px}
.co-panel{background:#fff;border:1px solid var(--rule);border-radius:10px;padding:30px}
.co-panel h2{font-size:1.25rem;margin-bottom:20px}
.co-step-label{font-family:var(--mono);font-size:.75rem;color:var(--ledger);letter-spacing:.06em;display:block;margin-bottom:8px}
.cycle-toggle{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:22px}
.cycle-toggle .cyc{border:1.5px solid var(--rule);border-radius:8px;background:var(--paper);padding:14px;cursor:pointer;text-align:left;font-family:var(--body)}
.cycle-toggle .cyc:hover{border-color:var(--ink)}
.cycle-toggle .cyc[aria-pressed=true]{border-color:var(--ink);background:#fff;box-shadow:0 0 0 1px var(--ink)}
.cyc .cyc-name{font-weight:700;font-size:.95rem;display:block}
.cyc .cyc-price{font-family:var(--mono);font-size:.8rem;color:var(--muted)}
.cyc .save{background:var(--marker);font-family:var(--mono);font-size:.68rem;padding:1px 7px;border-radius:4px;margin-left:6px;font-weight:600}
.pay-placeholder{border:2px dashed var(--rule);border-radius:8px;padding:26px;text-align:center;color:var(--muted);font-family:var(--mono);font-size:.82rem;background:var(--paper);margin-bottom:8px}
.pay-placeholder strong{display:block;color:var(--ink);font-family:var(--display);font-size:.95rem;margin-bottom:6px}
.secure-note{font-family:var(--mono);font-size:.74rem;color:var(--muted);display:flex;gap:8px;align-items:center;margin-top:14px}

/* order summary */
.summary{position:sticky;top:88px}
.sum-rows{margin:18px 0}
.sum-row{display:flex;justify-content:space-between;font-size:.95rem;padding:9px 0;border-bottom:1px dashed var(--rule)}
.sum-row.total{border-bottom:none;font-family:var(--display);font-weight:800;font-size:1.15rem;padding-top:14px}
.sum-row .lbl{color:var(--muted)}
.coupon{display:flex;gap:10px;margin-top:6px}
.coupon input{flex:1;font-family:var(--mono);font-size:.85rem;padding:10px 12px;border:1px solid var(--rule);border-radius:6px}
.coupon .btn{padding:10px 16px;font-size:.85rem}
.guarantee{background:var(--paper-2);border-radius:8px;padding:14px 16px;font-size:.85rem;color:var(--ink);margin-top:20px}
.guarantee strong{font-family:var(--display)}

/* ---------- archive ---------- */
.archive-grid{display:grid;grid-template-columns:1fr;gap:32px;padding:48px 0 80px;max-width:720px;margin:0 auto}
.locked{position:relative;overflow:hidden}
.locked .pill-body{filter:blur(4px);pointer-events:none;user-select:none}
.locked .lock-msg{position:absolute;inset:0;display:flex;flex-direction:column;gap:12px;align-items:center;justify-content:center;background:rgba(251,250,247,.55);z-index:2;text-align:center;padding:20px}
.lock-msg span{font-family:var(--mono);font-size:.8rem;color:var(--ink)}

/* ---------- prose (legal / about) ---------- */
.prose{padding:48px 0 80px}
.prose h2{font-size:1.3rem;margin:36px 0 10px}
.prose p{margin-bottom:14px;max-width:70ch;color:var(--ink)}
.prose p.small{font-size:.85rem;color:var(--muted)}
.doc-meta{font-family:var(--mono);font-size:.78rem;color:var(--muted);margin-bottom:8px}
.notice{background:#FFF7D6;border:1px solid #E8D98A;border-radius:8px;padding:14px 16px;font-size:.88rem;margin:20px 0;max-width:70ch}

/* ---------- success ---------- */
.success-wrap{min-height:60vh;display:flex;align-items:center;padding:80px 0}
.success-card{max-width:560px;margin:0 auto;text-align:center}
.check-badge{width:64px;height:64px;border-radius:50%;background:var(--ledger);color:#fff;font-size:2rem;display:flex;align-items:center;justify-content:center;margin:0 auto 24px;font-family:var(--display);font-weight:800}
.success-card p{color:var(--muted);margin-bottom:26px}
.next-steps{text-align:left;background:#fff;border:1px solid var(--rule);border-radius:10px;padding:22px 26px;margin:28px 0;font-size:.92rem}
.next-steps li{margin:8px 0 8px 20px}

/* ---------- footer ---------- */
footer.site{padding:44px 0 40px;font-size:.85rem;color:var(--muted);text-align:center}
footer.site .wrap{display:flex;flex-direction:column;align-items:center;gap:10px}
footer.site .monogram{font-family:var(--display);font-weight:800;font-size:1rem;color:var(--ink);display:flex;align-items:center;gap:14px}
footer.site .monogram::before,footer.site .monogram::after{content:"";display:block;width:46px;border-top:1px solid var(--rule)}
footer.site a{color:var(--muted)}
footer.site a:hover{color:var(--ledger)}

/* ---------- responsive ---------- */
@media (max-width:860px){
  .hero-grid,.checkout-grid{grid-template-columns:1fr;gap:40px}
  .steps,.topics,.plans{grid-template-columns:1fr}
  .nav-links{display:none}
  .signup{padding:44px 24px}
  .field-row{grid-template-columns:1fr}
  .summary{position:static}
}