*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #F7F4F1;
  --surface: #FFF6EC;
  --surface-strong: #FFFFFF;
  --border: #7A6854;
  --accent: #B55100;
  --accent-strong: #8A3D00;
  --text: #111827;
  --text-secondary: #374151;
  --text-muted: #4B5563;
  --success: #137333;
  --rest: #5B4BB7;
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 26px;
  --shadow: 0 10px 30px rgba(62, 42, 24, 0.1);
  --font: 'Outfit', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #152E2E;
    --surface: #1E3A3A;
    --surface-strong: #254545;
    --border: #6A9999;
    --accent: #F1C766;
    --accent-strong: #FFE29A;
    --text: #F5ECD9;
    --text-secondary: #DDD2BB;
    --text-muted: #B7C8C2;
    --success: #69D98A;
    --rest: #B8A8FF;
    --shadow: 0 12px 34px rgba(0, 0, 0, 0.28);
  }
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.7;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--accent-strong);
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 100;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  background: var(--text);
  color: var(--bg);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.content-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 45%, transparent);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(14px);
}

.content-nav {
  display: flex;
  width: min(1100px, calc(100% - 32px));
  min-height: 64px;
  margin: 0 auto;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.content-brand {
  color: var(--text);
  font-size: 16px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-decoration: none;
}

.content-nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 14px;
  font-weight: 700;
}

.content-nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
}

.content-nav-links .nav-cta {
  padding: 8px 15px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--bg);
}

.content-shell {
  width: min(940px, calc(100% - 32px));
  margin: 0 auto;
  padding: 42px 0 72px;
}

.breadcrumb {
  margin-bottom: 20px;
  color: var(--text-muted);
  font-size: 14px;
}

.breadcrumb a {
  color: inherit;
}

.content-hero {
  max-width: 840px;
  margin-bottom: 38px;
}

.content-kicker {
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.content-hero h1 {
  max-width: 820px;
  font-size: clamp(38px, 7vw, 66px);
  letter-spacing: -0.04em;
  line-height: 1.02;
  text-wrap: balance;
}

.content-lede {
  max-width: 780px;
  margin-top: 18px;
  color: var(--text-secondary);
  font-size: clamp(19px, 3vw, 23px);
  line-height: 1.55;
  text-wrap: pretty;
}

.content-byline {
  margin-top: 16px;
  color: var(--text-muted);
  font-size: 14px;
}

.answer-box,
.callout,
.tool-panel {
  border: 1px solid color-mix(in srgb, var(--border) 55%, transparent);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.answer-box {
  margin: 30px 0 44px;
  padding: 24px 26px;
}

.answer-box strong {
  display: block;
  margin-bottom: 5px;
  color: var(--accent);
  font-size: 14px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.article-content {
  max-width: 780px;
}

.article-content h2 {
  margin: 54px 0 16px;
  font-size: clamp(28px, 4.5vw, 38px);
  letter-spacing: -0.025em;
  line-height: 1.15;
  text-wrap: balance;
}

.article-content h3 {
  margin: 30px 0 10px;
  font-size: 22px;
  line-height: 1.25;
}

.article-content p + p,
.article-content ul + p,
.article-content ol + p,
.article-content p + ul,
.article-content p + ol {
  margin-top: 16px;
}

.article-content ul,
.article-content ol {
  margin: 14px 0 0 24px;
}

.article-content li + li {
  margin-top: 9px;
}

.article-content strong {
  color: var(--text);
}

.article-figure {
  display: grid;
  grid-template-columns: minmax(220px, 0.75fr) minmax(0, 1.25fr);
  gap: 28px;
  margin: 34px 0;
  align-items: center;
}

.article-figure img {
  width: min(100%, 300px);
  max-height: 570px;
  margin: 0 auto;
  border: 1px solid color-mix(in srgb, var(--border) 60%, transparent);
  border-radius: 24px;
  object-fit: cover;
  object-position: top;
  box-shadow: var(--shadow);
}

.article-figure figcaption {
  color: var(--text-secondary);
}

.article-figure figcaption strong {
  display: block;
  margin-bottom: 8px;
  color: var(--text);
  font-size: 23px;
}

.comparison-table {
  width: 100%;
  margin-top: 20px;
  border: 1px solid color-mix(in srgb, var(--border) 55%, transparent);
  border-collapse: separate;
  border-spacing: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--surface);
  font-size: 15px;
}

.comparison-table th,
.comparison-table td {
  padding: 14px 16px;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 32%, transparent);
  text-align: left;
  vertical-align: top;
}

.comparison-table tr:last-child th,
.comparison-table tr:last-child td {
  border-bottom: 0;
}

.comparison-table thead th {
  background: color-mix(in srgb, var(--accent) 10%, var(--surface));
  color: var(--text);
}

.callout {
  margin: 32px 0;
  padding: 22px 24px;
  border-left: 5px solid var(--accent);
}

.callout-title {
  margin-bottom: 5px;
  color: var(--text);
  font-weight: 800;
}

.step-list {
  display: grid;
  margin-top: 20px;
  gap: 14px;
  list-style: none;
  counter-reset: step;
}

.step-list li {
  position: relative;
  min-height: 58px;
  padding: 16px 18px 16px 68px;
  border: 1px solid color-mix(in srgb, var(--border) 45%, transparent);
  border-radius: var(--radius-sm);
  background: var(--surface);
  counter-increment: step;
}

.step-list li::before {
  position: absolute;
  top: 14px;
  left: 16px;
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border-radius: 50%;
  background: var(--accent);
  color: var(--bg);
  content: counter(step);
  font-weight: 900;
}

.faq-list h3 {
  margin-top: 26px;
}

.content-cta {
  margin-top: 56px;
  padding: 30px;
  border-radius: var(--radius-lg);
  background: var(--text);
  color: var(--bg);
  text-align: center;
}

.content-cta h2 {
  font-size: clamp(26px, 5vw, 38px);
  line-height: 1.15;
}

.content-cta p {
  max-width: 620px;
  margin: 10px auto 20px;
  opacity: 0.82;
}

.cta-row {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.cta-button {
  display: inline-flex;
  min-height: 46px;
  padding: 10px 18px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: var(--accent);
  color: var(--bg);
  font-weight: 800;
  text-decoration: none;
}

.cta-button.secondary {
  border-color: color-mix(in srgb, var(--bg) 55%, transparent);
  background: transparent;
  color: var(--bg);
}

.content-footer {
  padding: 28px 16px 40px;
  border-top: 1px solid color-mix(in srgb, var(--border) 42%, transparent);
  color: var(--text-muted);
  font-size: 14px;
  text-align: center;
}

.content-footer p + p {
  margin-top: 6px;
}

/* Interactive habit calculator */
.tool-panel {
  margin: 28px 0 44px;
  padding: 26px;
}

.tool-controls {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
  flex-wrap: wrap;
}

.field-group label {
  display: block;
  margin-bottom: 5px;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 800;
}

select,
button {
  min-height: 44px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

select {
  padding: 8px 36px 8px 12px;
}

button {
  padding: 8px 14px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 800;
}

button:hover {
  border-color: var(--accent);
}

.tracker-legend {
  display: flex;
  gap: 8px 16px;
  margin-bottom: 14px;
  flex-wrap: wrap;
  color: var(--text-muted);
  font-size: 13px;
}

.legend-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: 5px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--bg);
}

.legend-dot.done { border-color: var(--success); background: var(--success); }
.legend-dot.rest { border-color: var(--rest); background: var(--rest); }

.habit-days {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 8px;
}

.habit-day {
  display: flex;
  min-width: 0;
  min-height: 68px;
  padding: 7px 4px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1px;
  border-color: color-mix(in srgb, var(--border) 52%, transparent);
  background: var(--bg);
}

.habit-day .day-weekday {
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.habit-day .day-number {
  font-size: 16px;
  font-weight: 900;
}

.habit-day .day-state {
  color: var(--text-muted);
  font-size: 10px;
  line-height: 1.2;
}

.habit-day[data-state="done"] {
  border-color: var(--success);
  background: color-mix(in srgb, var(--success) 15%, var(--bg));
}

.habit-day[data-state="done"] .day-number,
.habit-day[data-state="done"] .day-state {
  color: var(--success);
}

.habit-day[data-state="rest"] {
  border-color: var(--rest);
  background: color-mix(in srgb, var(--rest) 13%, var(--bg));
}

.habit-day[data-state="rest"] .day-number,
.habit-day[data-state="rest"] .day-state {
  color: var(--rest);
}

.tracker-results {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-top: 22px;
}

.result-card {
  padding: 14px 10px;
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--border) 9%, var(--bg));
  text-align: center;
}

.result-value {
  display: block;
  color: var(--accent);
  font-size: clamp(24px, 4vw, 34px);
  font-weight: 900;
  line-height: 1.1;
}

.result-label {
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 700;
}

.tracker-message {
  margin-top: 16px;
  color: var(--text-secondary);
  font-size: 14px;
  text-align: center;
}

.tool-privacy {
  margin-top: 12px;
  color: var(--text-muted);
  font-size: 12px;
  text-align: center;
}

noscript {
  display: block;
  margin: 12px 0;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

@media (max-width: 700px) {
  .content-nav-links a:not(.nav-cta) { display: none; }
  .article-figure { grid-template-columns: 1fr; }
  .article-figure figcaption { text-align: center; }
  .comparison-table { font-size: 13px; }
  .comparison-table th, .comparison-table td { padding: 11px 10px; }
  .tracker-results { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 520px) {
  body { font-size: 16px; }
  .content-shell { width: min(100% - 24px, 940px); padding-top: 28px; }
  .content-nav { width: min(100% - 24px, 1100px); }
  .answer-box, .callout, .tool-panel { padding: 18px; }
  .habit-days { grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 6px; }
  .habit-day { min-height: 62px; }
  .content-cta { padding: 25px 18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}