/*
   * Chapterwise marketing site. Self-contained.
   * The authenticated application is hosted under /app/ on the canonical Chapterwise domain.
   */
  :root{
    --ink:#071f3b; --wealth:#3d7b70; --wealth-deep:#0f766e; --gold:#d99a32;
    --cream:#f4f7f5; --paper:#ffffff; --line:#e3ebe7; --muted:#5a6b78;
    --shadow:0 18px 50px rgba(23,32,51,.10); --lift:0 28px 80px rgba(23,32,51,.16);
    --serif:Georgia,"Times New Roman",serif;
    --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{margin:0;font-family:var(--sans);color:var(--ink);background:var(--paper);line-height:1.6;-webkit-font-smoothing:antialiased}
  a{color:inherit;text-decoration:none}
  img{max-width:100%;height:auto;display:block}
  .wrap{width:min(1180px,92vw);margin-inline:auto}
  .eyebrow{font-size:.72rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--wealth)}
  h1,h2,h3{line-height:1.08;letter-spacing:-.02em;margin:0}
  h1{font-size:clamp(2.4rem,5.4vw,4rem);font-weight:800}
  h2{font-size:clamp(1.8rem,3.6vw,2.7rem);font-weight:800}
  h3{font-size:1.15rem;font-weight:750}
  p{margin:.6rem 0}
  .lead{font-size:clamp(1.05rem,1.8vw,1.28rem);color:var(--muted);max-width:52ch}

  /* buttons */
  .btn{display:inline-flex;align-items:center;gap:.5rem;font-weight:750;font-size:.98rem;border-radius:.7rem;padding:.8rem 1.3rem;border:1px solid transparent;cursor:pointer;transition:transform .12s ease,box-shadow .12s ease,background .12s ease}
  .btn:hover{transform:translateY(-1px)}
  .btn-primary{background:var(--ink);color:#fff}
  .btn-primary:hover{box-shadow:var(--shadow)}
  .btn-accent{background:var(--wealth);color:#fff}
  .btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
  .btn-light{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.34)}
  .btn-sm{padding:.55rem 1rem;font-size:.9rem}

  /* wordmark */
  .brand{display:inline-flex;align-items:center;gap:.6rem}
  .brand img{width:38px;height:auto;border-radius:9px}
  .brand .word{font-family:var(--serif);font-weight:650;font-size:1.28rem;letter-spacing:-.03em;color:var(--ink)}
  .brand .word b{font-weight:650}
  .brand .word .accent{color:var(--wealth)}

  /* header */
  header.site{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:saturate(160%) blur(10px);border-bottom:1px solid var(--line)}
  header.site .bar{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.85rem 0}
  header.site nav{display:flex;align-items:center;gap:1.6rem}
  header.site nav a.link{font-weight:600;color:var(--ink);font-size:.95rem;opacity:.82}
  header.site nav a.link:hover{opacity:1;color:var(--wealth-deep)}
  .auth{display:flex;align-items:center;gap:.7rem}
  @media(max-width:860px){header.site nav .link{display:none}}
  @media(max-width:520px){
    header.site .bar{gap:.5rem}
    header.site nav{gap:.5rem}
    header.site .brand .word{display:none}
    header.site .auth{gap:.4rem}
    header.site .auth .btn-sm{padding:.5rem .65rem}
  }

  /* hero */
  .hero{background:linear-gradient(180deg,#f4f7f5 0%,#eef4f1 55%,#ffffff 100%);padding:clamp(3rem,7vw,6rem) 0 2.5rem;overflow:hidden}
  .hero .grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(1.5rem,4vw,3.5rem);align-items:center}
  .hero .cta{display:flex;gap:.8rem;flex-wrap:wrap;margin-top:1.5rem}
  .hero .fine{margin-top:1.1rem;font-size:.85rem;color:var(--muted)}
  .hero .fine b{color:var(--ink)}
  @media(max-width:920px){.hero .grid{grid-template-columns:1fr}.hero .shot{order:-1}}

  /* browser frame */
  .frame{border-radius:16px;background:#fff;border:1px solid var(--line);box-shadow:var(--lift);overflow:hidden}
  .frame .top{display:flex;align-items:center;gap:.4rem;padding:.6rem .8rem;background:#f7faf8;border-bottom:1px solid var(--line)}
  .frame .top i{width:11px;height:11px;border-radius:50%;background:#d7e0dc;display:inline-block}
  .frame .top .url{margin-left:.6rem;font-size:.72rem;color:var(--muted);background:#fff;border:1px solid var(--line);border-radius:6px;padding:.18rem .6rem}
  .frame img{width:100%;display:block}

  /* stat strip */
  .strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--cream)}
  .strip .row{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;padding:1.6rem 0}
  .strip .stat b{display:block;font-size:1.7rem;font-weight:800;color:var(--ink);font-variant-numeric:tabular-nums}
  .strip .stat span{font-size:.85rem;color:var(--muted)}
  @media(max-width:720px){.strip .row{grid-template-columns:repeat(2,1fr)}}

  /* sections */
  section.block{padding:clamp(3.2rem,7vw,6rem) 0}
  .center{text-align:center;max-width:46rem;margin-inline:auto}
  .center .lead{margin-inline:auto}

  /* four questions */
  .quad{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-top:2.4rem}
  .qcard{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:1.4rem;box-shadow:var(--shadow)}
  .qcard .n{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;background:#eaf3ef;color:var(--wealth-deep);font-weight:800}
  .qcard h3{margin-top:.9rem;font-size:1.02rem}
  .qcard p{font-size:.92rem;color:var(--muted);margin:.35rem 0 0}
  @media(max-width:900px){.quad{grid-template-columns:repeat(2,1fr)}}
  @media(max-width:520px){.quad{grid-template-columns:1fr}}

  /* feature rows */
  .feature{display:grid;grid-template-columns:1fr 1.1fr;gap:clamp(1.5rem,4vw,3.5rem);align-items:center}
  .feature+.feature{margin-top:clamp(2.5rem,5vw,4.5rem)}
  .feature.flip .copy{order:2}
  .feature .copy h2{margin-bottom:.5rem}
  .feature .copy ul{list-style:none;padding:0;margin:1.1rem 0 0}
  .feature .copy li{position:relative;padding-left:1.7rem;margin:.55rem 0;color:var(--ink)}
  .feature .copy li::before{content:"";position:absolute;left:0;top:.55em;width:.62rem;height:.62rem;border-radius:50%;background:var(--wealth);box-shadow:0 0 0 4px rgba(61,123,112,.15)}
  @media(max-width:900px){.feature{grid-template-columns:1fr}.feature.flip .copy{order:0}}

  /* pill tag */
  .tag{display:inline-flex;align-items:center;gap:.4rem;font-size:.74rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--wealth-deep);background:#eaf3ef;border-radius:999px;padding:.35rem .7rem}

  /* strategy cards */
  .cards{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-top:2.4rem}
  .scard{background:#fff;border:1px solid var(--line);border-radius:14px;padding:1.4rem;box-shadow:var(--shadow);display:flex;flex-direction:column}
  .scard .kind{font-size:.72rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
  .scard h3{margin-top:.3rem;font-size:1.08rem}
  .scard p{font-size:.9rem;color:var(--muted);margin:.5rem 0 0}
  .scard .foot{margin-top:auto;padding-top:1rem;font-size:.78rem;color:var(--wealth-deep);font-weight:750}
  @media(max-width:900px){.cards{grid-template-columns:repeat(2,1fr)}}
  @media(max-width:520px){.cards{grid-template-columns:1fr}}

  /* mobile band */
  .mobileband{background:var(--ink);color:#fff;border-radius:22px;padding:clamp(1.8rem,4vw,3rem);display:grid;grid-template-columns:1.2fr .8fr;gap:2rem;align-items:center;overflow:hidden}
  .mobileband h2{color:#fff}
  .mobileband .lead{color:#c9d6df}
  .mobileband .phone{justify-self:center;border-radius:26px;border:6px solid #0d2947;box-shadow:var(--lift);overflow:hidden;max-width:280px}
  @media(max-width:820px){.mobileband{grid-template-columns:1fr;text-align:center}.mobileband .lead{margin-inline:auto}}

  /* steps */
  .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem;margin-top:2.4rem;counter-reset:s}
  .step{position:relative;padding-top:.5rem}
  .step .num{width:44px;height:44px;border-radius:12px;background:var(--wealth);color:#fff;display:grid;place-items:center;font-weight:800;font-size:1.1rem}
  .step h3{margin-top:1rem;font-size:1.1rem}
  .step p{font-size:.94rem;color:var(--muted);margin-top:.3rem}
  @media(max-width:760px){.steps{grid-template-columns:1fr}}

  /* outcome story */
  .outcome{background:linear-gradient(180deg,#f4f8f6,#fff);border-block:1px solid var(--line)}
  .outcome-score{display:flex;align-items:center;justify-content:center;gap:clamp(1rem,4vw,3rem);margin:2rem auto;flex-wrap:wrap}
  .outcome-score .measure{text-align:center}
  .outcome-score .measure span{display:block;font-size:.74rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
  .outcome-score .measure strong{display:block;font-size:clamp(2.8rem,7vw,5rem);line-height:1;color:var(--ink);font-variant-numeric:tabular-nums}
  .outcome-score .after strong{color:var(--wealth-deep)}
  .outcome-score .arrow{font-size:2rem;color:var(--gold)}
  .outcome-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.3rem}
  .outcome-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:1rem;box-shadow:var(--shadow)}
  .outcome-card .label{display:flex;align-items:center;justify-content:space-between;gap:.7rem;margin-bottom:.8rem}
  .outcome-card .label b{font-size:1rem}
  .outcome-card .label span{font-size:.76rem;font-weight:800;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
  .outcome-card img{border-radius:11px;border:1px solid var(--line)}
  .shape-note{margin:1.4rem auto 0;max-width:60rem;border:1px solid #bfe0d7;background:#eff8f5;border-radius:14px;padding:1rem 1.2rem;color:#20443e;text-align:center}
  @media(max-width:820px){.outcome-grid{grid-template-columns:1fr}}

  /* visual product gallery */
  .visual-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:1.3rem;margin-top:2.4rem;align-items:start}
  .visual-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:1rem;box-shadow:var(--shadow)}
  .visual-card.wide{grid-row:span 2}
  .visual-card img{border-radius:11px;border:1px solid var(--line)}
  .visual-card h3{margin-top:1rem}
  .visual-card p{color:var(--muted);font-size:.94rem}
  .visual-points{display:grid;grid-template-columns:repeat(4,1fr);gap:.8rem;margin-top:1.3rem}
  .visual-points div{border:1px solid var(--line);border-radius:12px;padding:.9rem;background:var(--cream);font-size:.86rem;color:var(--muted)}
  .visual-points b{display:block;color:var(--ink);font-size:.94rem;margin-bottom:.2rem}
  @media(max-width:900px){.visual-grid{grid-template-columns:1fr}.visual-card.wide{grid-row:auto}.visual-points{grid-template-columns:repeat(2,1fr)}}

  /* screenshot tutorial */
  .tutorial{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem;margin-top:2.4rem;align-items:start}
  .tutorial-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:1rem;box-shadow:var(--shadow)}
  .tutorial-card img{width:100%;aspect-ratio:4/3;object-fit:cover;object-position:top;border-radius:11px;border:1px solid var(--line);background:var(--cream)}
  .tutorial-card .num{width:34px;height:34px;border-radius:10px;background:var(--wealth);color:#fff;display:grid;place-items:center;font-weight:800;margin-top:1rem}
  .tutorial-card h3{margin-top:.7rem}
  .tutorial-card p{font-size:.92rem;color:var(--muted)}
  @media(max-width:850px){.tutorial{grid-template-columns:1fr}}

  /* pricing */
  .pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem;margin-top:2.6rem;align-items:stretch}
  .price{background:#fff;border:1px solid var(--line);border-radius:16px;padding:1.7rem;display:flex;flex-direction:column;box-shadow:var(--shadow)}
  .price.feat{border-color:var(--wealth);box-shadow:var(--lift);position:relative}
  .price.feat .ribbon{position:absolute;top:-.8rem;left:1.7rem;background:var(--wealth);color:#fff;font-size:.7rem;font-weight:800;letter-spacing:.05em;text-transform:uppercase;border-radius:999px;padding:.3rem .7rem}
  .price .name{font-weight:800;font-size:1.05rem}
  .price .amt{font-size:2.2rem;font-weight:800;margin:.4rem 0 0}
  .price .amt small{font-size:.9rem;font-weight:600;color:var(--muted)}
  .price ul{list-style:none;padding:0;margin:1.1rem 0 1.4rem}
  .price li{position:relative;padding-left:1.5rem;margin:.5rem 0;font-size:.94rem}
  .price li::before{content:"✓";position:absolute;left:0;color:var(--wealth);font-weight:800}
  .price .btn{margin-top:auto;justify-content:center}
  @media(max-width:820px){.pricing{grid-template-columns:1fr}}

  /* faq */
  .faq{max-width:52rem;margin:2.4rem auto 0}
  details.q{border:1px solid var(--line);border-radius:12px;padding:.2rem 1.1rem;margin:.7rem 0;background:#fff}
  details.q summary{cursor:pointer;font-weight:700;padding:.95rem 0;list-style:none;display:flex;justify-content:space-between;gap:1rem}
  details.q summary::-webkit-details-marker{display:none}
  details.q summary::after{content:"+";color:var(--wealth-deep);font-weight:800}
  details.q[open] summary::after{content:"–"}
  details.q p{margin:0 0 1rem;color:var(--muted);font-size:.95rem}

  /* final cta */
  .final{background:linear-gradient(135deg,#0e3b34,#12345a);color:#fff;border-radius:24px;padding:clamp(2.4rem,5vw,4rem);text-align:center}
  .final h2{color:#fff}
  .final p{color:#cfe0da;max-width:40rem;margin-inline:auto}
  .final .cta{display:flex;gap:.8rem;justify-content:center;flex-wrap:wrap;margin-top:1.6rem}

  /* footer */
  footer.site{padding:3rem 0 2.4rem;border-top:1px solid var(--line);color:var(--muted)}
  footer.site .cols{display:flex;justify-content:space-between;gap:2rem;flex-wrap:wrap}
  footer.site a{display:block;color:var(--muted);font-size:.92rem;padding:.2rem 0}
  footer.site a:hover{color:var(--wealth-deep)}
  footer.site .disc{margin-top:2rem;font-size:.8rem;line-height:1.6}

  .sec-head{margin-bottom:.4rem}


:focus-visible{outline:3px solid var(--gold);outline-offset:3px}.skip-link{position:fixed;z-index:100;left:1rem;top:1rem;transform:translateY(-200%);padding:.7rem 1rem;border-radius:.5rem;background:var(--ink);color:#fff}.skip-link:focus{transform:none}.page-hero{padding:3rem 0 5rem;background:linear-gradient(180deg,#f4f7f5,#fff 24rem)}.page-hero h1{max-width:18ch}.breadcrumbs{display:flex;gap:.55rem;flex-wrap:wrap;margin-bottom:2rem;color:var(--muted);font-size:.86rem}.breadcrumbs a{text-decoration:underline}.prose-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.25rem;margin-top:2.5rem}.prose-section,.content-card,.tool-form,.tool-result{padding:1.5rem;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:var(--shadow)}.prose-section p{color:var(--muted)}.prose-section a,.source-list a{text-decoration:underline;color:var(--wealth-deep)}.source-list{padding-left:1.2rem}.context-cta{margin-top:2.5rem;padding:2rem;border-radius:18px;background:var(--ink);color:#fff}.context-cta p{color:#c9d6df}.context-cta .btn+.btn{margin-left:.7rem}.content-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;margin:2rem 0}.content-card h2{margin:.35rem 0}.content-card small{color:var(--muted)}.article-meta{display:flex;gap:1.5rem;flex-wrap:wrap;margin:1.5rem 0}.article-meta div{border-left:3px solid var(--wealth);padding-left:.7rem}.article-meta dt{font-size:.72rem;text-transform:uppercase;color:var(--muted);font-weight:800}.article-meta dd{margin:0}.tool-layout{display:grid;grid-template-columns:minmax(280px,.8fr) minmax(320px,1.2fr);gap:1.25rem;margin:2rem 0}.tool-form{display:grid;gap:1rem}.tool-form label{display:grid;gap:.3rem;font-weight:700}.tool-form fieldset{display:grid;grid-template-columns:repeat(3,1fr);gap:.6rem;border:1px solid var(--line);border-radius:.7rem;padding:1rem}.tool-form legend{padding:0 .4rem;font-weight:800}.tool-form input{width:100%;padding:.7rem;border:1px solid #71837b;border-radius:.55rem;font:inherit}.errors{color:#861717;background:#fff0f0;padding:1rem 1rem 1rem 2rem}.tool-result{overflow-x:auto}.tool-result table{width:100%;border-collapse:collapse;margin-top:1rem}.tool-result th,.tool-result td{text-align:left;padding:.6rem;border-bottom:1px solid var(--line)}.tool-result caption{text-align:left;color:var(--muted);padding:.7rem 0}.bar-chart{display:grid;gap:.6rem;margin:1rem 0}.bar-chart div{min-width:8%;padding:.55rem;background:var(--wealth);color:#fff;border-radius:.4rem;white-space:nowrap}.policy{margin-top:2rem}.pricing .amt{font-size:1.35rem;line-height:1.3}.beta-notice,.legal-review{margin:1.5rem 0;padding:1rem 1.2rem;border-left:4px solid var(--gold);background:#fff8e6;border-radius:.4rem}.beta-notice p,.legal-review p{margin:.35rem 0 0}.mobile-menu{display:none;position:relative}.mobile-menu summary{cursor:pointer;font-weight:800}.mobile-menu div{position:absolute;right:0;top:2rem;display:grid;min-width:13rem;padding:1rem;border:1px solid var(--line);border-radius:.7rem;background:#fff;box-shadow:var(--shadow)}.mobile-menu a{padding:.45rem}@media(max-width:860px){.mobile-menu{display:block}}@media(max-width:800px){.prose-grid,.content-grid,.tool-layout{grid-template-columns:1fr}.tool-form fieldset{grid-template-columns:1fr}.page-hero{padding-top:2rem}.context-cta .btn+.btn{margin:.7rem 0 0}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}