:root {
  --bg: #fffaf5;
  --bg-soft: #fff3e9;
  --surface: #ffffff;
  --surface-strong: #fff7f1;
  --text: #2d1a12;
  --muted: #6e5240;
  --line: #ead9cd;
  --brand: #8d5a3b;
  --brand-2: #f2a56e;
  --brand-3: #5e3723;
  --success: #285d45;
  --danger: #8b1e1e;
  --shadow: 0 22px 60px rgba(80, 47, 31, 0.08);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --container: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: linear-gradient(180deg, #fffaf5 0%, #fff6ef 100%);
  color: var(--text);
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
p, li { font-size: 1.02rem; }
ul, ol { padding-left: 1.25rem; }
:focus-visible { outline: 3px solid rgba(141, 90, 59, 0.35); outline-offset: 4px; }

.progress {
  position: fixed;
  inset: 0 0 auto;
  z-index: 60;
  height: 4px;
  background: transparent;
}
.progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--brand-2), var(--brand));
}

.container {
  width: min(var(--container), calc(100% - 2rem));
  margin: 0 auto;
}

.section { padding: 4.5rem 0; }
.section-soft { background: rgba(255, 255, 255, 0.45); }
.center { text-align: center; }
.eyebrow {
  margin: 0 0 .6rem;
  color: var(--brand);
  font-size: .82rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-weight: 700;
}
.section-heading h2 {
  margin: 0 0 .8rem;
  font-size: clamp(1.8rem, 1.4rem + 1vw, 2.6rem);
  line-height: 1.15;
}
.section-heading p:last-child { color: var(--muted); margin: 0; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  background: rgba(255, 250, 245, 0.82);
  border-bottom: 1px solid rgba(234, 217, 205, 0.7);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.5rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: .8rem;
  font-size: .95rem;
}
.brand span { display: grid; gap: .1rem; }
.brand strong { font-size: 1rem; }
.brand small { color: var(--muted); }
.site-nav {
  display: flex;
  gap: 1.2rem;
  align-items: center;
}
.site-nav a {
  color: var(--muted);
  font-size: .96rem;
  font-weight: 600;
}
.site-nav a:hover,
.site-nav a:focus-visible { color: var(--brand-3); }
.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 14px;
  padding: 0;
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--brand-3);
  margin: 5px auto;
}

.hero { padding: 4rem 0 3rem; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr);
  align-items: center;
  gap: 2rem;
}
.hero-copy h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.2rem, 1.8rem + 2vw, 4rem);
  line-height: 1.02;
  max-width: 12ch;
}
.lead {
  margin: 0;
  font-size: clamp(1.05rem, 1rem + .25vw, 1.2rem);
  color: var(--muted);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .9rem;
  margin-top: 1.5rem;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: .9rem 1.3rem;
  border-radius: 999px;
  font-weight: 700;
  transition: transform .18s ease, background .18s ease, color .18s ease, border-color .18s ease;
}
.button:hover { transform: translateY(-2px); }
.button-primary {
  background: linear-gradient(135deg, var(--brand-2), var(--brand));
  color: #fff;
  box-shadow: 0 16px 30px rgba(141, 90, 59, 0.22);
}
.button-secondary {
  background: rgba(255,255,255,.7);
  border: 1px solid var(--line);
  color: var(--brand-3);
}
.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
}
.hero-points li {
  padding: .68rem .9rem;
  border-radius: 999px;
  background: rgba(255,255,255,.72);
  border: 1px solid var(--line);
  font-size: .95rem;
  font-weight: 600;
}
.hero-visual {
  background: radial-gradient(circle at top right, rgba(255,255,255,.85), rgba(255,255,255,.45));
  padding: 1rem;
  border-radius: 32px;
  border: 1px solid rgba(234, 217, 205, 0.85);
  box-shadow: var(--shadow);
}

.two-col {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr);
  gap: 1.5rem;
}
.answer-card,
.aside-card,
.figure-card,
.toc-card,
.info-card,
.review-card,
.cta-panel,
.feature-quote,
.note {
  border: 1px solid var(--line);
  background: rgba(255,255,255,.88);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}
.answer-card,
.aside-card,
.figure-card,
.cta-panel,
.feature-quote,
.note { padding: 1.5rem; }
.answer-card h2,
.aside-card h2,
.toc-title,
.footer-brand,
.footer-title { margin-top: 0; }
.check-list,
.stack-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: grid;
  gap: .75rem;
}
.check-list li,
.stack-list li {
  position: relative;
  padding-left: 1.7rem;
}
.check-list li::before,
.stack-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .52rem;
  width: .72rem;
  height: .72rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand-2), var(--brand));
}
.warning-note { background: #fff7ef; }
.danger-note {
  background: #fff1f1;
  border-color: rgba(228, 95, 95, 0.3);
}
.figure-card figcaption {
  margin-top: 1rem;
  color: var(--muted);
  text-align: center;
}

.article-grid {
  display: grid;
  grid-template-columns: 290px minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
}
.toc-card {
  position: sticky;
  top: 6rem;
  padding: 1.2rem;
}
.toc-card nav {
  display: grid;
  gap: .5rem;
}
.toc-card a {
  color: var(--muted);
  padding: .55rem .7rem;
  border-radius: 12px;
  font-size: .95rem;
}
.toc-card a:hover,
.toc-card a:focus-visible,
.toc-card a.active {
  background: var(--bg-soft);
  color: var(--brand-3);
}
.article-content {
  display: grid;
  gap: 1.4rem;
}
.content-section {
  padding: 1.8rem;
  border-radius: var(--radius-xl);
  background: rgba(255,255,255,.72);
  border: 1px solid rgba(234, 217, 205, 0.9);
  box-shadow: var(--shadow);
}
.content-section h3 {
  margin: 1.4rem 0 .55rem;
  font-size: clamp(1.16rem, 1.06rem + .35vw, 1.42rem);
}
.content-section h3:first-of-type { margin-top: 0; }
.content-section p:last-child { margin-bottom: 0; }
.number-list { display: grid; gap: .45rem; }
.card-grid {
  display: grid;
  gap: 1rem;
}
.card-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.info-card,
.review-card { padding: 1.3rem; }
.info-card h3,
.review-card h3 { margin-top: 0; }
.quote-card {
  background: linear-gradient(180deg, #fff9f4, #fff4eb);
}
.quote-card blockquote,
.feature-quote {
  margin: 0;
  color: var(--brand-3);
}
.quote-source {
  margin-top: .9rem;
  color: var(--muted);
}
.table-wrap {
  overflow-x: auto;
  margin: 1rem 0;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #fff;
}
.table-wrap table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
}
caption {
  padding: 1rem;
  text-align: left;
  font-weight: 700;
  color: var(--brand-3);
}
th,
 td {
  padding: 1rem;
  border-top: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
thead th { background: #fff8f1; }

.districts {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin: 1rem 0 0;
}
.districts span {
  padding: .65rem .95rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  font-weight: 600;
}
.cta-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.3rem;
  background: linear-gradient(135deg, #fff7ef, #fff2e6);
}
.faq-list {
  display: grid;
  gap: .85rem;
}
.faq-list details {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  overflow: hidden;
}
.faq-list summary {
  cursor: pointer;
  list-style: none;
  padding: 1.1rem 1.2rem;
  font-weight: 700;
  position: relative;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+";
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.35rem;
  color: var(--brand);
}
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p {
  margin: 0;
  padding: 0 1.2rem 1.2rem;
  color: var(--muted);
}

.site-footer {
  padding: 3rem 0;
  border-top: 1px solid rgba(234, 217, 205, 0.8);
  background: rgba(255,255,255,.5);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr .8fr .9fr;
  gap: 2rem;
}
.footer-brand {
  font-size: 1.15rem;
  font-weight: 800;
}
.footer-title {
  font-weight: 800;
}
.site-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: .55rem;
}
.site-footer a,
.site-footer li,
.site-footer p { color: var(--muted); }

@media (max-width: 1080px) {
  .article-grid { grid-template-columns: 1fr; }
  .toc-card {
    position: static;
    order: -1;
  }
  .card-grid.three { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 820px) {
  .site-nav {
    position: absolute;
    right: 1rem;
    top: calc(100% + .5rem);
    width: min(320px, calc(100vw - 2rem));
    display: none;
    padding: .8rem;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: rgba(255,255,255,.98);
    box-shadow: var(--shadow);
  }
  .site-nav.is-open { display: grid; }
  .nav-toggle { display: inline-block; }
  .hero-grid,
  .two-col,
  .footer-grid,
  .cta-panel {
    grid-template-columns: 1fr;
  }
  .cta-panel {
    display: grid;
    align-items: start;
  }
  .hero-copy h1 { max-width: none; }
  .card-grid.two,
  .card-grid.three { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .section { padding: 3.3rem 0; }
  .container { width: min(var(--container), calc(100% - 1rem)); }
  .hero-actions,
  .hero-points,
  .districts { gap: .6rem; }
  .hero-points li,
  .districts span,
  .button { width: 100%; }
  .content-section,
  .answer-card,
  .aside-card,
  .figure-card,
  .cta-panel,
  .note,
  .feature-quote,
  .toc-card { padding: 1.1rem; border-radius: 20px; }
  .toc-card nav { gap: .35rem; }
  th,
  td,
  caption { padding: .9rem; }
}