:root {
  --color-bg: #FAFAF7;
  --color-bg-alt: #F2F2EC;
  --color-surface: #FFFFFF;
  --color-tint: #E8F4F4;
  --color-accent: #0F6E6E;
  --color-accent-dark: #0B5252;
  --color-green: #2D8659;
  --color-text: #3D3D3D;
  --color-text-soft: #6B6B66;
  --color-heading: #1A1A1A;
  --color-line: #E2E1DA;
  --color-warn: #8A5A00;
  --color-warn-bg: #FBF1DC;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 2px rgba(60, 60, 50, 0.06);
  --shadow-md: 0 8px 24px rgba(60, 60, 50, 0.08);
  --maxw: 1140px;
  --maxw-read: 760px;
  --nav-h: 68px;
  --space: 1rem;
  --transition: 220ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  font-size: 17px;
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  color: var(--color-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0 0 0.6em;
}

h1 { font-size: clamp(1.9rem, 4.2vw, 2.8rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-top: 2.2em; }
h3 { font-size: clamp(1.15rem, 2vw, 1.35rem); margin-top: 1.8em; }

p { margin: 0 0 1.1em; }

a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
  transition: color var(--transition);
}
a:hover { color: var(--color-accent-dark); }

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

ul, ol { padding-left: 1.3em; }
li { margin-bottom: 0.4em; }

strong { color: var(--color-heading); font-weight: 600; }

.mono, code, kbd {
  font-family: 'Cascadia Code', Consolas, 'DejaVu Sans Mono', monospace, ui-monospace, monospace;
  font-size: 0.92em;
}

code {
  background: var(--color-bg-alt);
  padding: 0.12em 0.4em;
  border-radius: 4px;
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}
.container--read { max-width: var(--maxw-read); }

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-accent);
  color: #fff;
  padding: 12px 18px;
  z-index: 2000;
  border-radius: 0 0 var(--radius-sm) 0;
  text-decoration: none;
}
.skip-link:focus { left: 0; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 250, 247, 0.92);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--color-line);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  gap: 16px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-heading);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}
.brand__mark {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  border-radius: 9px;
  background: var(--color-accent);
  display: grid;
  place-items: center;
  color: #fff;
}
.brand__mark svg { width: 20px; height: 20px; }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-line);
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.nav-toggle svg { width: 22px; height: 22px; }
.nav-toggle[aria-expanded="true"] .icon-open { display: none; }
.nav-toggle[aria-expanded="false"] .icon-close { display: none; }

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
}
.main-nav a {
  display: inline-flex;
  align-items: center;
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.96rem;
  min-height: 44px;
  transition: background var(--transition), color var(--transition);
}
.main-nav a:hover,
.main-nav a[aria-current="page"] {
  background: var(--color-tint);
  color: var(--color-accent-dark);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background-image: linear-gradient(120deg, rgba(15, 60, 60, 0.86), rgba(15, 110, 110, 0.55)),
    url('../img/home-hero.jpg');
  background-size: cover;
  background-position: center;
  color: #fff;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 60%, rgba(0, 0, 0, 0.25));
  pointer-events: none;
}
.hero__inner {
  position: relative;
  z-index: 1;
  padding: clamp(54px, 9vw, 110px) 0 clamp(48px, 7vw, 86px);
  max-width: 760px;
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Cascadia Code', Consolas, 'DejaVu Sans Mono', monospace, monospace;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #BFE8E8;
  margin-bottom: 18px;
}
.hero__eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: #6FE0B0; }
.hero h1 {
  color: #fff;
  margin-bottom: 0.4em;
}
.hero__subtitle {
  font-size: clamp(1.05rem, 2.2vw, 1.3rem);
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: 1.6em;
  max-width: 620px;
}
.hero__mission {
  font-size: 1.08rem;
  line-height: 1.7;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  margin-bottom: 28px;
  max-width: 620px;
}
.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #fff;
  color: var(--color-accent-dark);
  font-weight: 600;
  text-decoration: none;
  padding: 10px 22px;
  border-radius: 999px;
  min-height: 42px;
  line-height: 1.2;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: var(--shadow-md);
}
.hero__cta:hover { transform: translateY(-2px); color: var(--color-accent-dark); }
.hero__cta svg { width: 18px; height: 18px; flex: 0 0 auto; }

/* ---------- Section base ---------- */
.section {
  padding: clamp(46px, 7vw, 84px) 0;
}
.section--tint { background: var(--color-bg-alt); }
.section--tealtint { background: var(--color-tint); }
.section__head {
  max-width: 720px;
  margin-bottom: 36px;
}
.section__eyebrow {
  font-family: 'Cascadia Code', Consolas, 'DejaVu Sans Mono', monospace, monospace;
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
  display: block;
}
.section__lead {
  font-size: 1.08rem;
  color: var(--color-text-soft);
}

/* ---------- Learning path roadmap ---------- */
.roadmap {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 14px;
}
.roadmap__item {
  counter-increment: step;
  position: relative;
  display: grid;
  grid-template-columns: 54px 1fr auto;
  align-items: center;
  gap: 18px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  color: var(--color-text);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.roadmap__item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}
.roadmap__num {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--color-tint);
  color: var(--color-accent-dark);
  display: grid;
  place-items: center;
  font-family: 'Cascadia Code', Consolas, 'DejaVu Sans Mono', monospace, monospace;
  font-weight: 600;
  font-size: 1rem;
}
.roadmap__num::before {
  content: counter(step, decimal-leading-zero);
}
.roadmap__body strong {
  display: block;
  color: var(--color-heading);
  font-size: 1.04rem;
  margin-bottom: 2px;
}
.roadmap__body span {
  font-size: 0.9rem;
  color: var(--color-text-soft);
}
.roadmap__arrow {
  color: var(--color-accent);
  flex: 0 0 auto;
}
.roadmap__arrow svg { width: 20px; height: 20px; }

/* ---------- Lesson cards (hub) ---------- */
.lesson-list {
  display: grid;
  gap: 16px;
}
.lesson-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 22px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.lesson-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.lesson-item__step {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--color-accent);
  color: #fff;
  display: grid;
  place-items: center;
  font-family: 'Cascadia Code', Consolas, 'DejaVu Sans Mono', monospace, monospace;
  font-weight: 600;
  font-size: 0.95rem;
  text-align: center;
  line-height: 1.1;
}
.lesson-item__step small { display: block; font-size: 0.62rem; letter-spacing: 0.08em; opacity: 0.85; }
.lesson-item h3 {
  margin: 0 0 6px;
  font-size: 1.12rem;
}
.lesson-item h3 a { text-decoration: none; color: var(--color-heading); }
.lesson-item h3 a:hover { color: var(--color-accent); }
.lesson-item__summary { font-size: 0.96rem; color: var(--color-text-soft); margin: 0 0 8px; }
.lesson-item__meta {
  font-family: 'Cascadia Code', Consolas, 'DejaVu Sans Mono', monospace, monospace;
  font-size: 0.76rem;
  color: var(--color-text-soft);
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* ---------- Source method ---------- */
.method-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}
.method-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}
.method-card svg { width: 26px; height: 26px; color: var(--color-accent); margin-bottom: 12px; }
.method-card h3 { margin: 0 0 8px; font-size: 1.08rem; }
.method-card p { margin: 0; font-size: 0.94rem; color: var(--color-text-soft); }

/* ---------- Trust band ---------- */
.trust-band {
  background: var(--color-tint);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 22px 26px;
  font-size: 0.98rem;
}
.trust-band strong { color: var(--color-accent-dark); }

/* ---------- Breadcrumbs ---------- */
.breadcrumb {
  font-size: 0.86rem;
  font-family: 'Cascadia Code', Consolas, 'DejaVu Sans Mono', monospace, monospace;
}
.breadcrumb ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}
.breadcrumb li { display: flex; align-items: center; gap: 6px; color: var(--color-text-soft); }
.breadcrumb li + li::before { content: "›"; color: var(--color-line); }
.breadcrumb a { color: var(--color-text-soft); text-decoration: none; }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb [aria-current="page"] { color: var(--color-heading); }

/* ---------- Article ---------- */
.article-head {
  margin-bottom: 8px;
}
.article-head__step {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Cascadia Code', Consolas, 'DejaVu Sans Mono', monospace, monospace;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: var(--color-tint);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.article-meta {
  font-family: 'Cascadia Code', Consolas, 'DejaVu Sans Mono', monospace, monospace;
  font-size: 0.82rem;
  color: var(--color-text-soft);
  margin: 6px 0 24px;
}
.article-body h2 { padding-top: 6px; border-top: 1px solid var(--color-line); }
.article-body h2:first-of-type { border-top: 0; padding-top: 0; }
.article-body p,
.article-body li { font-size: 1.04rem; }

.callout {
  background: var(--color-warn-bg);
  border-left: 4px solid var(--color-warn);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin: 24px 0;
  font-size: 0.96rem;
}
.callout strong { color: var(--color-warn); }
.callout--info {
  background: var(--color-tint);
  border-left-color: var(--color-accent);
}
.callout--info strong { color: var(--color-accent-dark); }

.def-list {
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: 8px 26px 18px;
  margin: 22px 0;
}
.def-list dt {
  font-weight: 600;
  color: var(--color-heading);
  margin-top: 14px;
  font-family: 'Cascadia Code', Consolas, 'DejaVu Sans Mono', monospace, monospace;
  font-size: 0.92rem;
}
.def-list dd { margin: 4px 0 0; font-size: 0.98rem; }

.keytakeaway {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 22px 26px;
  margin: 28px 0;
  box-shadow: var(--shadow-sm);
}
.keytakeaway h2 { margin-top: 0; border: 0; padding-top: 0; }
.keytakeaway ul { margin-bottom: 0; }

/* ---------- Prev/Next nav ---------- */
.postnav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 40px 0 8px;
}
.postnav a {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  text-decoration: none;
  color: var(--color-text);
  min-height: 64px;
  transition: box-shadow var(--transition), transform var(--transition);
}
.postnav a:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.postnav .label {
  font-family: 'Cascadia Code', Consolas, 'DejaVu Sans Mono', monospace, monospace;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 4px;
}
.postnav .title { font-weight: 600; color: var(--color-heading); }
.postnav .postnav__next { text-align: right; align-items: flex-end; }
.postnav__overview {
  grid-column: 1 / -1;
  text-align: center;
  margin-top: 6px;
}
.postnav__overview a {
  display: inline-block;
  background: transparent;
  border: 0;
  padding: 10px;
}

/* ---------- Article disclaimer ---------- */
.article-disclaimer {
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  font-size: 0.92rem;
  color: var(--color-text-soft);
  margin: 28px 0;
}
.article-disclaimer svg { width: 18px; height: 18px; color: var(--color-warn); vertical-align: -3px; margin-right: 6px; }

/* ---------- General content page (legal/about) ---------- */
.prose h2 { border-top: 1px solid var(--color-line); padding-top: 18px; }
.prose h2:first-of-type { border-top: 0; padding-top: 0; }
.prose__meta {
  font-family: 'Cascadia Code', Consolas, 'DejaVu Sans Mono', monospace, monospace;
  font-size: 0.84rem;
  color: var(--color-text-soft);
  margin-bottom: 28px;
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: start;
}
.contact-info dl {
  display: grid;
  gap: 14px;
  margin: 0 0 20px;
}
.contact-info dt {
  font-family: 'Cascadia Code', Consolas, 'DejaVu Sans Mono', monospace, monospace;
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-soft);
  margin: 0;
}
.contact-info dd { margin: 2px 0 0; font-size: 1.02rem; }
.contact-info dd a { color: var(--color-heading); text-decoration: none; }
.contact-info dd a:hover { color: var(--color-accent); }

.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow-sm);
}
.contact-form label {
  display: block;
  font-family: 'Cascadia Code', Consolas, 'DejaVu Sans Mono', monospace, monospace;
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-soft);
  margin: 16px 0 6px;
}
.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  font-family: inherit;
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  min-height: 44px;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
  border-color: var(--color-accent);
}
.contact-form textarea { min-height: 130px; resize: vertical; }
.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
  align-items: center;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 9px 18px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  line-height: 1.2;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  font-family: inherit;
  transition: transform var(--transition), background var(--transition);
}
.btn svg { width: 18px; height: 18px; flex: 0 0 auto; }
.btn--primary {
  background: var(--color-accent);
  color: #fff;
}
.btn--primary:hover { background: var(--color-accent-dark); color: #fff; transform: translateY(-1px); }
.btn--ghost {
  background: transparent;
  color: var(--color-accent-dark);
  border-color: var(--color-line);
}
.btn--ghost:hover { background: var(--color-tint); }
.form-note {
  font-size: 0.84rem;
  color: var(--color-text-soft);
  margin-top: 14px;
}

/* ---------- Map click-to-load ---------- */
.map-wrap {
  margin-top: 30px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-line);
  background: var(--color-bg-alt);
}
.map-trigger {
  width: 100%;
  border: 0;
  background: var(--color-surface);
  padding: 26px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-family: inherit;
  color: var(--color-accent-dark);
}
.map-trigger svg { width: 30px; height: 30px; }
.map-trigger:hover { background: var(--color-tint); }
.map-frame { width: 100%; height: 360px; border: 0; display: block; }

/* ---------- Footer ---------- */
.site-footer {
  background: #161614;
  color: #C9C8C2;
  padding: 56px 0 120px;
  margin-top: 60px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 30px;
}
.footer-col h4 {
  color: #fff;
  font-size: 0.86rem;
  font-family: 'Cascadia Code', Consolas, 'DejaVu Sans Mono', monospace, monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { color: #C9C8C2; text-decoration: none; font-size: 0.94rem; }
.footer-col a:hover { color: #fff; }
.footer-brand { color: #fff; font-weight: 800; font-size: 1.05rem; margin-bottom: 8px; display: inline-flex; align-items: center; gap: 10px; }
.footer-disclaimer {
  grid-column: 1 / -1;
  margin-top: 16px;
  padding-top: 22px;
  border-top: 1px solid #2A2A26;
  font-size: 0.88rem;
  color: #9C9B95;
  line-height: 1.6;
}
.footer-disclaimer strong { color: #E2E1DA; }

/* ---------- Cookie CMP ---------- */
.cmp {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 900;
  display: none;
}
.cmp.is-open { display: block; }
body.nav-is-open { overflow: hidden; }
body.nav-is-open .cmp { visibility: hidden; pointer-events: none; }
.cmp__bar {
  background: #FFFFFF;
  border-top: 1px solid var(--color-line);
  box-shadow: 0 -8px 28px rgba(40, 40, 30, 0.12);
  padding: 18px 20px;
}
.cmp__bar-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  align-items: center;
}
.cmp__text { font-size: 0.92rem; color: var(--color-text); max-width: 720px; }
.cmp__text a { color: var(--color-accent); }
.cmp__actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.cmp__btn {
  min-height: 44px;
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
  font-family: inherit;
  cursor: pointer;
  border: 1px solid var(--color-line);
  background: var(--color-surface);
  color: var(--color-heading);
  transition: background var(--transition), transform var(--transition);
}
.cmp__btn:hover { background: var(--color-bg-alt); }
.cmp__btn--primary { background: var(--color-accent); color: #fff; border-color: var(--color-accent); }
.cmp__btn--primary:hover { background: var(--color-accent-dark); }
.cmp__btn--reject {
  background: var(--color-surface);
  color: var(--color-heading);
  border: 1px solid var(--color-heading);
  font-weight: 600;
}
.cmp__btn--reject:hover { background: var(--color-bg-alt); }

/* expanded panel */
.cmp__panel {
  background: #FFFFFF;
  border-top: 1px solid var(--color-line);
  box-shadow: 0 -8px 28px rgba(40, 40, 30, 0.12);
  padding: 24px 20px 28px;
  max-height: 78vh;
  overflow-y: auto;
}
.cmp__panel-inner { max-width: var(--maxw); margin: 0 auto; }
.cmp__panel h3 { margin: 0 0 6px; font-size: 1.2rem; }
.cmp__panel-head p { font-size: 0.92rem; color: var(--color-text-soft); margin-bottom: 18px; }
.cmp__category {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  margin-bottom: 12px;
}
.cmp__cat-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
}
.cmp__cat-head strong { font-size: 1rem; color: var(--color-heading); }
.cmp__cat-head .badge {
  font-family: 'Cascadia Code', Consolas, 'DejaVu Sans Mono', monospace, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-soft);
}
.cmp__category p {
  font-size: 0.88rem;
  color: var(--color-text-soft);
  margin: 8px 0 0;
}
/* toggle switch */
.switch {
  position: relative;
  display: inline-block;
  width: 46px;
  height: 26px;
  flex: 0 0 auto;
}
.switch input { opacity: 0; width: 0; height: 0; }
.switch .slider {
  position: absolute;
  inset: 0;
  background: #C7C6C0;
  border-radius: 999px;
  transition: background var(--transition);
}
.switch .slider::before {
  content: "";
  position: absolute;
  height: 20px;
  width: 20px;
  left: 3px;
  top: 3px;
  background: #fff;
  border-radius: 50%;
  transition: transform var(--transition);
  box-shadow: var(--shadow-sm);
}
.switch input:checked + .slider { background: var(--color-green); }
.switch input:checked + .slider::before { transform: translateX(20px); }
.switch input:focus-visible + .slider { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.cmp__panel-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 20px;
  justify-content: flex-end;
}

/* ---------- Utilities ---------- */
.lead { font-size: 1.12rem; color: var(--color-text-soft); }
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.muted { color: var(--color-text-soft); }
.divider { height: 1px; background: var(--color-line); border: 0; margin: 36px 0; }
.tag {
  display: inline-block;
  font-family: 'Cascadia Code', Consolas, 'DejaVu Sans Mono', monospace, monospace;
  font-size: 0.74rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  background: var(--color-tint);
  padding: 4px 10px;
  border-radius: 999px;
}

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms ease, transform 600ms ease;
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .nav-toggle { display: inline-flex; }
  .main-nav {
    position: fixed;
    inset: var(--header-h, var(--nav-h)) 0 auto 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-line);
    padding: 14px 20px 22px;
    transform: translateY(-130%);
    transition: transform var(--transition);
    z-index: 110;
    max-height: calc(100dvh - var(--header-h, var(--nav-h)));
    overflow-y: auto;
  }
  .main-nav.is-open { transform: translateY(0); box-shadow: var(--shadow-md); }
  .main-nav ul { flex-direction: column; align-items: stretch; gap: 4px; }
  .main-nav a { width: 100%; }

  .roadmap__item { grid-template-columns: 46px 1fr; gap: 14px; padding: 14px 16px; }
  .roadmap__num { width: 46px; height: 46px; font-size: 0.9rem; }
  .roadmap__arrow { display: none; }

  .postnav { grid-template-columns: 1fr; }
  .postnav .postnav__next { text-align: left; align-items: flex-start; }

  .cmp__bar-inner { grid-template-columns: 1fr; }
  .cmp__actions { justify-content: stretch; }
  .cmp__actions .cmp__btn { flex: 1 1 auto; }
}

@media (max-width: 520px) {
  body { font-size: 16px; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero__cta { width: 100%; justify-content: center; }
  .lesson-item { grid-template-columns: 1fr; }
  .lesson-item__step { width: fit-content; padding: 8px 14px; height: auto; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}