/* Graphing Calculator Apps — magazine style, shared stylesheet */
:root {
  --paper: #fbfaf7;
  --ink: #131826;
  --muted: #5a6274;
  --accent: #1d4ed8;
  --accent-deep: #173da6;
  --accent-soft: #e9effc;
  --line: #e6e2d8;
  --card: #ffffff;
  --gold: #b45309;
  --serif: Georgia, 'Times New Roman', Times, serif;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
main { flex: 1 0 auto; }
.wrap { max-width: 1060px; margin: 0 auto; padding: 0 22px; }
.wrap-narrow { max-width: 760px; margin: 0 auto; padding: 0 22px; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; }

/* Masthead */
.masthead { border-bottom: 3px double var(--ink); background: var(--paper); }
.masthead-inner { display: flex; align-items: baseline; justify-content: space-between; gap: 18px; padding: 20px 22px 14px; flex-wrap: wrap; }
.brand { font-family: var(--serif); font-weight: 700; font-size: 26px; color: var(--ink); letter-spacing: -0.01em; }
.brand:hover { text-decoration: none; }
.brand .amp { color: var(--accent); }
.masthead nav { display: flex; gap: 22px; font-size: 14px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; }
.masthead nav a { color: var(--ink); }
.masthead nav a:hover { color: var(--accent); text-decoration: none; }
.dateline { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); font-size: 12.5px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.1em; padding: 7px 22px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* Hero */
.hero { padding: 64px 0 40px; border-bottom: 1px solid var(--line); }
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 40px; align-items: center; }
.hero-img { border-radius: 12px; border: 1px solid var(--line); box-shadow: 0 18px 44px rgba(19, 24, 38, 0.10); display: block; }

/* App icons */
.app-icon { width: 52px; height: 52px; border-radius: 12px; border: 1px solid var(--line); display: block; }
.app-icon-lg { width: 64px; height: 64px; border-radius: 14px; }
.icon-fallback { display: flex; align-items: center; justify-content: center; background: var(--accent-soft); color: var(--accent); font-weight: 800; font-size: 15px; font-family: var(--sans); }
.icon-fallback.icon-web { background: #eef2f7; color: var(--ink); }
.kicker { font-size: 13px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); margin: 0 0 14px; }
h1 { font-family: var(--serif); font-size: clamp(34px, 5.4vw, 54px); line-height: 1.08; letter-spacing: -0.015em; margin: 0 0 20px; font-weight: 700; }
.lede { font-family: var(--serif); font-size: 21px; line-height: 1.55; color: #2a3245; margin: 0 0 10px; max-width: 46em; }
.byline { font-size: 14px; color: var(--muted); margin-top: 22px; }

/* Sections */
section { padding: 56px 0; }
.section-alt { background: #f4f2ea; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
h2 { font-family: var(--serif); font-size: clamp(26px, 3.6vw, 34px); line-height: 1.15; margin: 0 0 18px; letter-spacing: -0.01em; }
h3 { font-family: var(--serif); font-size: 22px; margin: 34px 0 10px; }
p { margin: 0 0 16px; }
.section-intro { max-width: 44em; color: #2a3245; }

/* Picks */
.picks { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 30px; }
.pick { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 24px; display: flex; flex-direction: column; position: relative; }
.pick-best { border: 2px solid var(--accent); box-shadow: 0 10px 30px rgba(29, 78, 216, 0.10); }
.pick-badge { position: absolute; top: -13px; left: 20px; background: var(--accent); color: #fff; font-size: 11.5px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; padding: 4px 12px; border-radius: 999px; }
.pick-badge-silver { background: var(--ink); }
.pick h3 { margin: 6px 0 4px; font-size: 23px; }
.pick .pick-sub { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.09em; color: var(--muted); margin-bottom: 12px; }
.pick p { font-size: 15.5px; color: #2a3245; flex: 1; }
.pick .pick-price { font-weight: 700; font-size: 15px; margin-bottom: 14px; }
.btn { display: inline-block; font-weight: 700; font-size: 15px; padding: 11px 20px; border-radius: 8px; border: 1.5px solid var(--accent); color: var(--accent); text-align: center; }
.btn:hover { background: var(--accent-soft); text-decoration: none; }
.btn-solid { background: var(--accent); color: #fff; }
.btn-solid:hover { background: var(--accent-deep); color: #fff; }
.pick .btn { margin-top: auto; }

/* Picks with icons */
.pick-head { display: flex; align-items: center; gap: 14px; margin: 6px 0 10px; }
.pick-head h3 { margin: 0; }

/* App list (replaces the big table) */
.app-list { margin-top: 26px; display: flex; flex-direction: column; gap: 14px; }
.app-row { display: grid; grid-template-columns: 64px 1fr; gap: 18px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 20px 22px; align-items: start; }
.app-row.app-row-pick { border-left: 4px solid var(--accent); }
.app-row-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 6px; }
.app-row-head h3 { margin: 0; font-size: 21px; }
.app-row-badge { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.09em; color: var(--accent); background: var(--accent-soft); padding: 3px 10px; border-radius: 999px; }
.app-row-badge-muted { color: var(--muted); background: #f0eee6; }
.app-row-facts { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 10px; }
.fact { font-size: 13px; font-weight: 600; color: #2a3245; background: #f4f2ea; border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; }
.fact.fact-good { color: #166534; background: #eaf6ee; border-color: #cde8d6; }
.fact.fact-bad { color: #9f1239; background: #fdeef2; border-color: #f4d3dd; }
.app-row p { margin: 0; font-size: 15px; color: #2a3245; }

/* Method / how we compare */
.method-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 36px; align-items: center; margin-top: 8px; }
.method-img { border-radius: 12px; border: 1px solid var(--line); box-shadow: 0 14px 34px rgba(19, 24, 38, 0.08); }
.check-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 18px; }
.check-card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; font-size: 14px; }
.check-card strong { display: block; margin-bottom: 3px; font-size: 14.5px; }
.check-card span { color: var(--muted); font-size: 13px; }

/* Split sections with image */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: center; }
.split img { border-radius: 12px; border: 1px solid var(--line); box-shadow: 0 14px 34px rgba(19, 24, 38, 0.08); }

/* Comparison table (legacy) */
.table-scroll { overflow-x: auto; margin-top: 26px; border: 1px solid var(--line); border-radius: 10px; background: var(--card); }
table.compare { border-collapse: collapse; width: 100%; min-width: 860px; font-size: 14.5px; }
.compare th { background: var(--ink); color: #fff; text-align: left; font-size: 12.5px; text-transform: uppercase; letter-spacing: 0.07em; padding: 13px 14px; }
.compare td { border-top: 1px solid var(--line); padding: 13px 14px; vertical-align: top; }
.compare tr:nth-child(even) td { background: #faf9f4; }
.compare td strong { color: var(--ink); }
.compare .row-pick td { background: var(--accent-soft) !important; }
.table-note { font-size: 13px; color: var(--muted); margin-top: 10px; }

/* App notes */
.app-note { border-top: 1px solid var(--line); padding: 26px 0 8px; }
.app-note h3 { margin-top: 0; }
.app-note h3 .note-tag { font-family: var(--sans); font-size: 12px; font-weight: 700; color: var(--gold); text-transform: uppercase; letter-spacing: 0.09em; vertical-align: middle; margin-left: 10px; }

/* FAQ */
.faq-item { border-bottom: 1px solid var(--line); padding: 20px 0; }
.faq-item h3 { font-size: 19px; margin: 0 0 8px; font-family: var(--sans); font-weight: 700; }
.faq-item p { margin-bottom: 8px; }

/* Books */
.book img.book-cover { width: 100%; aspect-ratio: 3/4; object-fit: cover; object-position: top; border-radius: 8px; border: 1px solid var(--line); margin-bottom: 14px; background: #f4f2ea; }
.cover-row { display: flex; gap: 8px; margin-bottom: 14px; }
.cover-row img { width: 32%; aspect-ratio: 3/4; object-fit: cover; object-position: top; border-radius: 6px; border: 1px solid var(--line); }
.books { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 24px; }
.book { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 22px; }
.book h3 { margin: 0 0 6px; font-size: 20px; }
.book .book-lang { font-size: 12.5px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.09em; color: var(--muted); }
.book p { font-size: 15px; color: #2a3245; margin-top: 10px; }

/* Articles */
.article-hero { width: 100%; border-radius: 12px; border: 1px solid var(--line); margin-bottom: 26px; }
.article { max-width: 46em; }
.article-meta { font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.09em; font-weight: 700; margin-bottom: 20px; }
.article h3 { margin-top: 38px; }
.article p, .article li { font-size: 17px; line-height: 1.75; }
.article ul, .article ol { padding-left: 22px; margin: 0 0 16px; }
.article li { margin-bottom: 6px; }
.article table { margin: 20px 0 26px; }
kbd { font-family: var(--sans); font-size: 0.82em; background: #fff; border: 1px solid var(--line); border-bottom-width: 2.5px; border-radius: 5px; padding: 1px 7px; white-space: nowrap; }
.cta-box { display: grid; grid-template-columns: 64px 1fr; gap: 18px; background: #eef2fd; border: 2px solid var(--accent); border-radius: 12px; padding: 22px; margin: 46px 0 10px; align-items: start; }
.cta-box .cta-kicker { font-size: 11.5px; font-weight: 800; text-transform: uppercase; letter-spacing: 0.11em; color: var(--accent); margin-bottom: 4px; }
.cta-box h3 { margin: 0 0 8px; font-size: 21px; }
.cta-box p { font-size: 15px; margin-bottom: 14px; }
.cta-box .btn { margin-right: 8px; }

/* Blog list */
.blog-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 24px; }
.blog-card { display: block; background: var(--card); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.blog-card:hover { text-decoration: none; border-color: var(--accent); }
.blog-card-img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; display: block; border-bottom: 1px solid var(--line); }
.blog-card-body { padding: 18px 20px 20px; }
.blog-card .blog-card-tag { font-size: 11.5px; font-weight: 800; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); }
.blog-card h3 { margin: 8px 0 8px; font-size: 19px; color: var(--ink); }
.blog-card p { font-size: 14.5px; color: #2a3245; margin: 0; }

/* Footer */
footer { background: var(--ink); color: #cdd2de; margin-top: 20px; padding: 36px 0 26px; }
footer .brand { color: #faf9f5; }
footer .brand .amp { color: #93aef5; }
.foot-top { display: flex; justify-content: space-between; align-items: center; gap: 18px; flex-wrap: wrap; padding-bottom: 18px; border-bottom: 1px solid rgba(255,255,255,0.16); }
.foot-nav { display: flex; gap: 22px; flex-wrap: wrap; }
.foot-nav a { color: #cdd2de; font-size: 14.5px; font-weight: 600; }
.foot-nav a:hover { color: #fff; }
footer .foot-legal { font-size: 12px; color: #8d94a6; margin: 18px 0 10px; max-width: 78em; }
footer .foot-meta { display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; font-size: 12.5px; color: #8d94a6; }
footer .foot-meta a { color: #cdd2de; }

@media (max-width: 1100px) {
  .picks { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .picks { grid-template-columns: 1fr; }
  .books { grid-template-columns: 1fr; }
  .blog-list { grid-template-columns: 1fr; }
  .foot-top { flex-direction: column; align-items: flex-start; }
  .hero-grid, .method-grid, .split { grid-template-columns: 1fr; }
  .check-cards { grid-template-columns: 1fr; }
}