/* Shed World — shared styles
   Palette: pine, cedar, kraft paper, charcoal. Type: Zilla Slab + Public Sans + IBM Plex Mono. */
:root {
  --pine: #1f3a2e;
  --pine-2: #2c5240;
  --pine-3: #e3ebe4;
  --cedar: #b9551f;
  --cedar-dark: #9a4416;
  --paper: #f6f1e7;
  --kraft: #ebe0c9;
  --kraft-2: #dccdaf;
  --ink: #1d1e1b;
  --muted: #5a5a51;
  --line: #d6c9ae;
  --white: #fffdf8;
  --radius: 6px;
  --wrap: 1180px;
  --serif: "Zilla Slab", Georgia, serif;
  --sans: "Public Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  overflow-x: hidden;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--pine-2); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--cedar); }
h1, h2, h3, h4 { font-family: var(--serif); line-height: 1.12; margin: 0 0 .5em; color: var(--pine); font-weight: 700; }
h1 { font-size: clamp(2.3rem, 5vw, 3.9rem); letter-spacing: -.01em; }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); }
h3 { font-size: 1.3rem; }
p { margin: 0 0 1em; }
:focus-visible { outline: 3px solid var(--cedar); outline-offset: 2px; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 12px; top: 12px; background: var(--white); padding: 8px 12px; z-index: 100; }

.eyebrow {
  font-family: var(--mono); font-size: .78rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--cedar); margin: 0 0 .9em; display: inline-flex; align-items: center; gap: .6em;
}
.eyebrow::before { content: ""; width: 22px; height: 2px; background: currentColor; }

/* Tape-measure rule: the signature divider */
.tape {
  height: 26px;
  background:
    repeating-linear-gradient(90deg, var(--ink) 0 1.5px, transparent 1.5px 60px) top left / 100% 14px no-repeat,
    repeating-linear-gradient(90deg, var(--ink) 0 1px, transparent 1px 12px) top left / 100% 7px no-repeat,
    #e9b949;
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  opacity: .95;
}
.tape.thin { height: 14px; }

/* Header */
.site-header { background: var(--paper); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 50; }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 72px; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--pine); }
.brand svg { width: 40px; height: 40px; }
.brand span { font-family: var(--serif); font-weight: 700; font-size: 1.5rem; letter-spacing: -.01em; }
.brand:hover { color: var(--pine); }
.nav ul { list-style: none; display: flex; gap: 6px; margin: 0; padding: 0; align-items: center; }
.nav a {
  text-decoration: none; color: var(--ink); font-weight: 600; font-size: .96rem;
  padding: 8px 12px; border-radius: var(--radius); display: block;
}
.nav a:hover { background: var(--kraft); color: var(--ink); }
.nav a[aria-current="page"] { color: var(--pine); box-shadow: inset 0 -3px 0 var(--cedar); border-radius: 0; }
.nav a.btn { color: var(--white); margin-left: 8px; }
.nav a.btn:hover { color: var(--white); background: var(--cedar-dark); }
.nav-toggle {
  display: none; background: none; border: 2px solid var(--pine); color: var(--pine); border-radius: var(--radius);
  font: 600 .95rem var(--sans); padding: 7px 12px; cursor: pointer;
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  background: var(--cedar); color: var(--white); border: 0; border-radius: var(--radius);
  font: 700 1rem var(--sans); padding: 13px 22px; text-decoration: none; cursor: pointer;
  box-shadow: 0 2px 0 var(--cedar-dark);
  transition: transform .12s ease, background .12s ease;
}
.btn:hover { background: var(--cedar-dark); color: var(--white); transform: translateY(-1px); }
.btn.ghost { background: transparent; color: var(--pine); box-shadow: inset 0 0 0 2px var(--pine); }
.btn.ghost:hover { background: var(--pine); color: var(--white); }
.btn.small { padding: 9px 14px; font-size: .92rem; }

/* Hero */
.hero { padding: 64px 0 56px; position: relative; }
.hero .wrap { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.hero .lede { font-size: 1.2rem; color: var(--muted); max-width: 34em; }
.hero-art { background: var(--kraft); border-radius: 10px; padding: 18px; border: 1px solid var(--line); position: relative; }
.hero-art .caption {
  font-family: var(--mono); font-size: .74rem; color: var(--muted); display: flex; justify-content: space-between;
  border-top: 1px dashed var(--kraft-2); padding-top: 10px; margin-top: 8px; gap: 12px;
}

/* Signup */
.signup { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; max-width: 560px; }
.signup label.sr { position: absolute; left: -9999px; }
.signup input, .form input[type=text], .form input[type=email], .form select {
  flex: 1 1 180px; min-width: 0; font: 400 1rem var(--sans); padding: 12px 14px;
  border: 2px solid var(--kraft-2); border-radius: var(--radius); background: var(--white); color: var(--ink);
}
.signup input:focus, .form input:focus, .form select:focus { border-color: var(--pine-2); outline: none; box-shadow: 0 0 0 3px rgba(44, 82, 64, .2); }
.signup .btn { flex: 1 1 100%; }
.fine { font-size: .84rem; color: var(--muted); margin-top: 10px; }
.form-msg { display: none; margin-top: 14px; padding: 14px 16px; border-radius: var(--radius); background: var(--pine-3); color: var(--pine); font-weight: 600; border-left: 4px solid var(--pine-2); }
.form-msg.show { display: block; }
.error-text { color: #a0281a; font-size: .86rem; font-weight: 600; min-height: 1.2em; margin: 4px 0 0; }
input[aria-invalid="true"] { border-color: #a0281a !important; }

/* Sections */
section { padding: 72px 0; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 32px; flex-wrap: wrap; }
.section-head p { color: var(--muted); max-width: 38em; margin: 0; }
.band-pine { background: var(--pine); color: #e8efe9; }
.band-pine h2, .band-pine h3 { color: var(--white); }
.band-pine .eyebrow { color: #e9b949; }
.band-kraft { background: var(--kraft); }

/* Topic tiles */
.topics { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.topic {
  background: var(--white); border: 1px solid var(--line); border-radius: 8px; padding: 22px 18px 20px;
  text-decoration: none; color: var(--ink); display: flex; flex-direction: column; gap: 10px;
  transition: border-color .15s ease, transform .15s ease;
}
.topic:hover { border-color: var(--pine-2); transform: translateY(-2px); color: var(--ink); }
.topic svg { width: 44px; height: 44px; color: var(--pine-2); }
.topic h3 { margin: 0; font-size: 1.2rem; }
.topic p { margin: 0; font-size: .92rem; color: var(--muted); }
.topic .count { font-family: var(--mono); font-size: .74rem; color: var(--cedar); margin-top: auto; }

/* Article cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  background: var(--white); border: 1px solid var(--line); border-radius: 8px; overflow: hidden;
  display: flex; flex-direction: column;
}
.card .thumb { aspect-ratio: 16 / 9; background: var(--kraft); display: grid; place-items: center; border-bottom: 1px solid var(--line); }
.card .thumb svg { width: 100%; height: 100%; }
.card .body { padding: 20px 20px 22px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card h3 { margin: 0; font-size: 1.25rem; }
.card h3 a { color: var(--pine); text-decoration: none; }
.card h3 a:hover { color: var(--cedar); }
.card p { margin: 0; color: var(--muted); font-size: .95rem; }
.meta { font-family: var(--mono); font-size: .74rem; color: var(--muted); display: flex; gap: 12px; flex-wrap: wrap; margin-top: auto; padding-top: 8px; }
.tag {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .06em; text-transform: uppercase;
  color: var(--pine-2); background: var(--pine-3); padding: 3px 8px; border-radius: 3px; align-self: flex-start;
}
.tag.soon { color: var(--muted); background: var(--kraft); }

/* Promise list */
.promise { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.promise div { border-top: 2px solid rgba(233, 185, 73, .6); padding-top: 18px; }
.promise h3 { font-size: 1.2rem; }
.promise p { color: #c9d6cc; margin: 0; }

/* Guide CTA strip */
.cta-strip { display: grid; grid-template-columns: 260px 1fr; gap: 48px; align-items: center; }
.cta-strip h2 { margin-bottom: .3em; }

/* Guide cover (CSS) */
.cover {
  aspect-ratio: 3 / 4; background: var(--pine); border-radius: 4px 10px 10px 4px; position: relative; overflow: hidden;
  box-shadow: 12px 14px 0 rgba(31, 58, 46, .18), inset 8px 0 0 rgba(0, 0, 0, .18);
  color: var(--white); padding: 28px 22px 22px 30px; display: flex; flex-direction: column; transform: rotate(-2deg);
}
.cover .k { font-family: var(--mono); font-size: .66rem; letter-spacing: .14em; text-transform: uppercase; color: #e9b949; }
.cover .t { font-family: var(--serif); font-weight: 700; font-size: 1.9rem; line-height: 1.02; margin-top: 12px; }
.cover .s { font-size: .78rem; color: #c9d6cc; margin-top: 10px; }
.cover svg { margin-top: auto; width: 100%; height: auto; }
.cover .tape { position: absolute; left: 0; right: 0; bottom: 0; height: 14px; border-width: 1px 0 0; }

/* Articles page */
.page-head { padding: 56px 0 36px; }
.page-head p.lede { font-size: 1.15rem; color: var(--muted); max-width: 40em; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 0; padding: 0; list-style: none; }
.filters button {
  font: 600 .92rem var(--sans); border: 2px solid var(--pine); background: transparent; color: var(--pine);
  padding: 8px 14px; border-radius: 999px; cursor: pointer;
}
.filters button[aria-pressed="true"] { background: var(--pine); color: var(--white); }
.filters button:hover { border-color: var(--cedar); }
.topic-block { padding: 44px 0; border-top: 1px solid var(--line); }
.topic-block[hidden] { display: none; }
.topic-block .head { display: grid; grid-template-columns: 300px 1fr; gap: 40px; }
.topic-block .head h2 { font-size: 1.9rem; }
.topic-block .head p { color: var(--muted); font-size: .98rem; }
.list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.list li { border-bottom: 1px dashed var(--kraft-2); }
.list li:first-child { border-top: 1px dashed var(--kraft-2); }
.list .row { display: grid; grid-template-columns: 1fr auto; gap: 18px; padding: 16px 4px; align-items: baseline; }
.list .row h3 { font-size: 1.15rem; margin: 0 0 4px; }
.list .row h3 a { color: var(--pine); text-decoration: none; }
.list .row h3 a:hover { color: var(--cedar); text-decoration: underline; }
.list .row p { margin: 0; font-size: .94rem; color: var(--muted); }
.list .row .meta { padding: 0; white-space: nowrap; }
.list .featured { background: var(--white); border: 1px solid var(--pine-2); border-radius: 8px; padding: 0 16px; margin: 6px 0; }

/* Article page */
.article-head { padding: 48px 0 28px; }
.crumbs { font-family: var(--mono); font-size: .78rem; color: var(--muted); margin-bottom: 20px; }
.crumbs a { color: var(--muted); }
.article-head .lede { font-size: 1.22rem; color: var(--muted); max-width: 36em; }
.byline { display: flex; flex-wrap: wrap; gap: 8px 22px; font-family: var(--mono); font-size: .8rem; color: var(--muted); margin-top: 22px; }
.byline b { color: var(--ink); font-weight: 600; }
.quick { display: grid; grid-template-columns: repeat(4, 1fr); border: 2px solid var(--pine); border-radius: 8px; background: var(--white); margin-top: 32px; }
.quick div { padding: 16px 18px; border-right: 1px solid var(--line); }
.quick div:last-child { border-right: 0; }
.quick dt { font-family: var(--mono); font-size: .72rem; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); }
.quick dd { margin: 4px 0 0; font-family: var(--serif); font-weight: 700; font-size: 1.35rem; color: var(--pine); }

.article-layout { display: grid; grid-template-columns: 230px minmax(0, 1fr) 280px; gap: 48px; padding: 40px 0 80px; align-items: start; }
.toc { position: sticky; top: 96px; font-size: .92rem; }
.toc h2 { font-family: var(--mono); font-size: .74rem; text-transform: uppercase; letter-spacing: .12em; color: var(--muted); font-weight: 600; }
.toc ol { list-style: none; padding: 0; margin: 0; border-left: 2px solid var(--line); }
.toc a { display: block; padding: 6px 0 6px 14px; color: var(--muted); text-decoration: none; margin-left: -2px; border-left: 2px solid transparent; }
.toc a:hover { color: var(--pine); }
.toc a.active { color: var(--pine); border-left-color: var(--cedar); font-weight: 600; }

.prose { max-width: 700px; }
.prose h2 { margin-top: 1.8em; scroll-margin-top: 96px; font-size: 1.9rem; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin-top: 1.4em; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li { margin-bottom: .35em; }
.prose figure { margin: 28px 0; }
.prose figcaption { font-size: .86rem; color: var(--muted); margin-top: 10px; }
.prose .diagram { background: var(--kraft); border: 1px solid var(--line); border-radius: 8px; padding: 16px; }

.note {
  background: var(--white); border: 1px solid var(--line); border-left: 4px solid #e9b949;
  padding: 16px 18px; border-radius: 0 var(--radius) var(--radius) 0; margin: 24px 0; font-size: .97rem;
}
.note strong:first-child { font-family: var(--mono); font-size: .76rem; text-transform: uppercase; letter-spacing: .1em; display: block; margin-bottom: 4px; color: var(--cedar); }
.note p:last-child { margin: 0; }

.steps { list-style: none; padding: 0 !important; counter-reset: step; margin: 24px 0; }
.steps > li { position: relative; padding: 0 0 26px 64px; margin: 0; counter-increment: step; }
.steps > li::before {
  content: counter(step, decimal-leading-zero); position: absolute; left: 0; top: -2px;
  width: 44px; height: 44px; border-radius: 50%; background: var(--pine); color: #e9b949;
  font: 600 .95rem var(--mono); display: grid; place-items: center;
}
.steps > li::after { content: ""; position: absolute; left: 21px; top: 46px; bottom: 4px; width: 2px; background: var(--line); }
.steps > li:last-child::after { display: none; }
.steps h3 { margin: 6px 0 6px; font-size: 1.25rem; }
.steps p { margin-bottom: .6em; }
.steps .time { font-family: var(--mono); font-size: .76rem; color: var(--cedar); }

.checklist { list-style: none; padding: 0 !important; display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; }
.checklist li { border-bottom: 1px dashed var(--kraft-2); padding: 10px 0; margin: 0; display: flex; gap: 10px; align-items: flex-start; }
.checklist label { display: flex; gap: 10px; align-items: flex-start; cursor: pointer; }
.checklist input { accent-color: var(--pine-2); width: 18px; height: 18px; margin-top: 4px; flex: none; }
.checklist small { display: block; color: var(--muted); font-size: .84rem; }

.table-wrap { overflow-x: auto; margin: 22px 0; border: 1px solid var(--line); border-radius: 8px; background: var(--white); }
table { border-collapse: collapse; width: 100%; font-size: .95rem; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th { background: var(--pine); color: var(--white); font-family: var(--mono); font-size: .74rem; letter-spacing: .08em; text-transform: uppercase; font-weight: 600; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
tfoot td { font-weight: 700; background: var(--kraft); border-bottom: 0; }
tbody tr:nth-child(even) { background: #fbf7ef; }

.calc { background: var(--pine); color: #e8efe9; border-radius: 8px; padding: 22px; margin: 26px 0; }
.calc h3 { color: var(--white); margin-top: 0; }
.calc .fields { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.calc label { font-family: var(--mono); font-size: .74rem; text-transform: uppercase; letter-spacing: .08em; display: flex; flex-direction: column; gap: 6px; }
.calc input { font: 600 1.05rem var(--sans); padding: 10px 12px; border-radius: var(--radius); border: 0; width: 100%; min-width: 0; }
.calc output { display: block; margin-top: 16px; font-size: 1.05rem; }
.calc output b { color: #e9b949; font-family: var(--serif); font-size: 1.5rem; }

.picks { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 22px 0; }
.pick { background: var(--white); border: 1px solid var(--line); border-radius: 8px; padding: 18px; display: flex; flex-direction: column; gap: 6px; }
.pick .tag { background: #f6e3c2; color: var(--cedar-dark); }
.pick h4 { font-family: var(--serif); font-size: 1.12rem; color: var(--pine); margin: 4px 0 0; }
.pick p { font-size: .9rem; color: var(--muted); margin: 0 0 8px; }
.pick .btn { margin-top: auto; align-self: flex-start; }

.faq details { border-bottom: 1px solid var(--line); padding: 4px 0; }
.faq details:first-of-type { border-top: 1px solid var(--line); }
.faq summary {
  cursor: pointer; list-style: none; font-family: var(--serif); font-weight: 600; font-size: 1.15rem; color: var(--pine);
  padding: 14px 36px 14px 0; position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 6px; top: 10px; font: 400 1.6rem var(--mono); color: var(--cedar); }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 0 0 16px; }

.aside-card { position: sticky; top: 96px; display: grid; gap: 18px; }
.aside-card .box { background: var(--white); border: 1px solid var(--line); border-radius: 8px; padding: 20px; }
.aside-card .box.pine { background: var(--pine); color: #dfe8e1; border: 0; }
.aside-card .box.pine h3 { color: var(--white); font-size: 1.25rem; }
.aside-card .box.pine input { width: 100%; margin-bottom: 8px; font: 400 .95rem var(--sans); padding: 10px 12px; border-radius: var(--radius); border: 0; }
.aside-card .box.pine .btn { width: 100%; }
.aside-card .box.pine .fine { color: #b9c9bd; }
.aside-card .box h3 { font-size: 1.1rem; }
.aside-card ul { padding-left: 1.1em; margin: 0; font-size: .93rem; }

.progress { position: fixed; top: 0; left: 0; height: 4px; background: var(--cedar); width: 0; z-index: 60; }

/* Free guide page */
.guide-hero { padding: 60px 0 70px; }
.guide-hero .wrap { display: grid; grid-template-columns: 1fr 440px; gap: 64px; align-items: start; }
.guide-hero .cover-wrap { max-width: 280px; margin: 10px 0 0 10px; }
.form { background: var(--white); border: 2px solid var(--pine); border-radius: 10px; padding: 28px; box-shadow: 8px 8px 0 var(--kraft-2); }
.form h2 { font-size: 1.6rem; }
.form .field { margin-bottom: 12px; }
.form label { display: block; font-weight: 700; font-size: .92rem; margin-bottom: 6px; }
.form input[type=text], .form input[type=email], .form select { width: 100%; }
.form .check { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; font-size: .9rem; color: var(--muted); }
.form .check input { width: 18px; height: 18px; margin-top: 3px; accent-color: var(--pine-2); flex: none; }
.form .btn { width: 100%; margin-top: 8px; }
.chapters { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.chapters li { background: var(--white); border: 1px solid var(--line); border-radius: 8px; padding: 22px; display: grid; grid-template-columns: 52px 1fr; gap: 14px; }
.chapters .n { font: 600 1.6rem var(--mono); color: var(--cedar); line-height: 1; }
.chapters h3 { font-size: 1.2rem; margin-bottom: .3em; }
.chapters p { margin: 0; color: var(--muted); font-size: .95rem; }
.sample-page { background: var(--white); border: 1px solid var(--line); border-radius: 8px; padding: 26px; box-shadow: 6px 6px 0 var(--kraft-2); }
.sample-page h3 { font-size: 1.15rem; }
.score { display: grid; grid-template-columns: 1fr auto; gap: 8px 16px; font-size: .93rem; align-items: center; }
.score .bar { grid-column: 1 / -1; height: 8px; background: var(--kraft); border-radius: 4px; overflow: hidden; margin-bottom: 6px; }
.score .bar i { display: block; height: 100%; background: var(--pine-2); }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.ticks { list-style: none; padding: 0; margin: 0 0 1em; }
.ticks li { padding-left: 30px; position: relative; margin-bottom: 10px; }
.ticks li::before { content: ""; position: absolute; left: 2px; top: 7px; width: 14px; height: 8px; border-left: 3px solid var(--cedar); border-bottom: 3px solid var(--cedar); transform: rotate(-45deg); }

/* Footer */
.site-footer { background: var(--ink); color: #bdbcb2; padding: 56px 0 30px; font-size: .93rem; }
.site-footer .grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.6fr; gap: 40px; }
.site-footer h4 { font-family: var(--mono); font-size: .74rem; text-transform: uppercase; letter-spacing: .12em; color: #e9b949; font-weight: 600; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 8px; }
.site-footer a { color: #e6e4da; text-decoration: none; }
.site-footer a:hover { color: #e9b949; text-decoration: underline; }
.site-footer .brand { color: var(--white); }
.site-footer .disclosure { border: 1px solid #3b3c36; border-radius: var(--radius); padding: 14px 16px; }
.site-footer .bottom { border-top: 1px solid #3b3c36; margin-top: 40px; padding-top: 20px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: .84rem; }

/* Responsive */
@media (max-width: 1180px) {
  .article-layout { grid-template-columns: 200px minmax(0, 1fr); }
  .article-layout > aside.aside-card { grid-column: 2; position: static; }
  .topics { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 900px) {
  body { font-size: 16.5px; }
  .hero .wrap, .guide-hero .wrap, .cta-strip, .two-col { grid-template-columns: 1fr; gap: 36px; }
  .cta-strip .cover { max-width: 220px; }
  .cards { grid-template-columns: 1fr 1fr; }
  .promise { grid-template-columns: 1fr; gap: 20px; }
  .article-layout { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .article-layout > aside.aside-card { grid-column: auto; }
  .toc { position: static; background: var(--white); border: 1px solid var(--line); border-radius: 8px; padding: 16px 18px; }
  .topic-block .head { grid-template-columns: 1fr; gap: 12px; }
  .quick { grid-template-columns: 1fr 1fr; }
  .quick div:nth-child(2) { border-right: 0; }
  .quick div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .site-footer .grid { grid-template-columns: 1fr 1fr; }
  .nav-toggle { display: inline-block; }
  .nav { position: absolute; top: 100%; left: 0; right: 0; background: var(--paper); border-bottom: 1px solid var(--line); display: none; }
  .nav.open { display: block; }
  .nav ul { flex-direction: column; align-items: stretch; padding: 10px 16px 18px; gap: 2px; }
  .nav a[aria-current="page"] { box-shadow: inset 3px 0 0 var(--cedar); }
  .nav a.btn { margin: 8px 0 0; }
}
@media (max-width: 600px) {
  .wrap { padding: 0 18px; }
  section { padding: 52px 0; }
  .hero { padding: 36px 0 44px; }
  .topics, .cards, .chapters, .picks, .checklist { grid-template-columns: 1fr; }
  .calc .fields { grid-template-columns: 1fr 1fr; }
  .calc .fields label:last-child { grid-column: 1 / -1; }
  .list .row { grid-template-columns: 1fr; gap: 6px; }
  .site-footer .grid { grid-template-columns: 1fr; gap: 28px; }
  .form { padding: 20px; box-shadow: 5px 5px 0 var(--kraft-2); }
  .steps > li { padding-left: 54px; }
  .steps > li::before { width: 38px; height: 38px; font-size: .85rem; }
  .steps > li::after { left: 18px; top: 40px; }
  .brand span { font-size: 1.3rem; }
  .quick dd { font-size: 1.15rem; }
  th, td { padding: 10px; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}