:root {
  color-scheme: light;
  --page: #f2f0e9;
  --surface: #fffefa;
  --surface-soft: #e9e7dd;
  --surface-active: #e4ead6;
  --line: #d4d0c1;
  --text: #293024;
  --muted: #68695d;
  --green: #5d7a39;
  --green-bright: #4f6d31;
  --green-soft: #edf1e4;
  --success-text: #435b2b;
  --focus: #5d7a39;
  --header: #30342b;
  --header-text: #fffefa;
  --header-muted: #d7d4c8;
  --step-strip: #faf8f2;
  --progress-track: #d8d6ca;
  --scroll-track: #e8e5dc;
  --scroll-thumb: #9a988c;
  --media-shadow: 0 18px 42px rgba(45, 43, 32, .17);
  --alert-red: #9b2f2f;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #171a15;
  --surface: #22261e;
  --surface-soft: #2b3026;
  --surface-active: #344526;
  --line: #45483c;
  --text: #f4f1e8;
  --muted: #c3c0b4;
  --green: #5f7f3b;
  --green-bright: #a9c285;
  --green-soft: #2f3c25;
  --success-text: #cdddb5;
  --focus: #b5cc92;
  --header: #20231d;
  --header-text: #fffefa;
  --header-muted: #cbc7b9;
  --step-strip: #1b1e18;
  --progress-track: #3a3d32;
  --scroll-track: #292c25;
  --scroll-thumb: #77786c;
  --media-shadow: 0 20px 45px rgba(0,0,0,.3);
  --alert-red: #f08a82;
}

* { box-sizing: border-box; }

html { background: var(--page); }

body {
  margin: 0;
  min-width: 320px;
  background: var(--page);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button, a { font: inherit; }

button:focus-visible, a:focus-visible, video:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.site-shell { min-height: 100vh; }
.site-chrome { position: sticky; top: 0; z-index: 20; }

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 18px clamp(20px, 4vw, 56px);
  background: var(--header);
  color: var(--header-text);
  border-bottom: 1px solid var(--line);
}

.brand-lockup { display: flex; align-items: center; gap: 13px; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--green);
  color: white;
  font-weight: 750;
}
.brand-title { margin: 0; font-size: 16px; font-weight: 680; }
.brand-subtitle { margin: 3px 0 0; color: var(--header-muted); font-size: 13px; }
.header-tools { display: flex; align-items: center; gap: 14px; }
.course-time { display: flex; align-items: center; gap: 8px; color: var(--header-muted); font-size: 14px; white-space: nowrap; }
.theme-toggle { display: inline-flex; align-items: center; gap: 7px; padding: 8px 11px; border: 1px solid #93a760; border-radius: 999px; background: #6f823e; color: #fff; cursor: pointer; font-size: 12px; font-weight: 700; box-shadow: 0 0 0 1px rgba(0,0,0,.12); }
.theme-toggle:hover { background: #80954a; }
.theme-toggle:focus-visible { outline: 3px solid rgba(185, 207, 126, .55); outline-offset: 2px; }
.theme-icon { font-size: 14px; line-height: 1; }
.training-return-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 7px 11px;
  border: 1px solid rgba(255,255,255,.4);
  border-radius: 999px;
  color: var(--header-text);
  text-decoration: none;
  font-size: 12px;
  font-weight: 650;
  white-space: nowrap;
}
.training-return-link:hover { background: rgba(255,255,255,.15); }

.progress-track { height: 5px; background: var(--progress-track); }
.progress-value { height: 100%; width: 0; background: var(--green); transition: width 180ms ease; }

.step-strip {
  overflow-x: auto;
  scrollbar-color: var(--scroll-thumb) var(--scroll-track);
  background: var(--step-strip);
  border-bottom: 1px solid var(--line);
}
.step-nav {
  display: flex;
  gap: 8px;
  width: max-content;
  min-width: 100%;
  padding: 14px clamp(16px, 3vw, 48px);
}
.step-button {
  display: grid;
  grid-template-columns: 28px auto;
  gap: 10px;
  align-items: center;
  min-width: 140px;
  padding: 10px 12px;
  border: 0;
  border-radius: 12px;
  color: var(--text);
  background: transparent;
  text-align: left;
  cursor: pointer;
}
.step-button:hover { background: var(--surface-soft); }
.step-button[aria-current="step"] { background: var(--surface-active); }
.step-button.is-complete .step-number { border-color: var(--green); background: var(--green); color: #fff; }
.step-number {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--muted);
  border-radius: 50%;
  font-size: 12px;
}
.step-copy strong { display: block; font-size: 13px; font-weight: 680; }
.step-copy span { display: block; margin-top: 2px; color: var(--muted); font-size: 11px; }

.lesson-shell { width: min(1220px, 100%); margin: 0 auto; padding: 38px clamp(20px, 4vw, 56px) 42px; }
.step-kicker { margin: 0 0 10px; color: var(--green-bright); font-size: 12px; font-weight: 700; letter-spacing: .13em; text-transform: uppercase; }
.lesson-title-row { display: flex; justify-content: space-between; gap: 24px; align-items: flex-start; }
h1 { margin: 0; font-size: clamp(30px, 4vw, 48px); line-height: 1.06; letter-spacing: -.035em; }
h1 .lesson-title-emphasis { margin-inline-start: .65em; font-style: italic; }
.lesson-summary { max-width: 770px; margin: 14px 0 0; color: var(--muted); font-size: 16px; line-height: 1.55; }
.lesson-summary-secondary { margin-top: 3px; }
body[data-step="8"] .lesson-summary-secondary {
  color: var(--alert-red);
  font-size: 18px;
  font-weight: 700;
}
.duration-chip { flex: none; padding: 7px 10px; border-radius: 999px; background: var(--surface-soft); color: var(--green-bright); font-size: 12px; }
.duration-chip[hidden] { display: none !important; }

.learning-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(320px, .8fr); gap: 24px; margin-top: 28px; align-items: start; }
.media-panel { overflow: hidden; aspect-ratio: 16 / 9; border: 1px solid var(--line); border-radius: 18px; background: #050806; box-shadow: var(--media-shadow); }
.media-panel video, .media-panel img { display: block; width: 100%; height: 100%; object-fit: contain; background: #050806; }

.action-panel { padding: 22px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.action-heading-row { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; }
.panel-eyebrow { margin: 0 0 5px; color: var(--green-bright); font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
h2 { margin: 0; font-size: 19px; }
.complete-button, .secondary-button, .primary-button, .text-button, .resource-link { border-radius: 10px; cursor: pointer; }
.complete-button { padding: 8px 10px; border: 1px solid var(--line); background: transparent; color: var(--muted); font-size: 12px; white-space: nowrap; }
.complete-button[aria-pressed="true"] { border-color: var(--green); background: var(--green-soft); color: var(--green-bright); }
.action-list { display: grid; gap: 15px; margin: 20px 0 0; padding: 0; list-style: none; counter-reset: task; }
.action-list li { display: grid; grid-template-columns: 28px 1fr; gap: 10px; counter-increment: task; }
.action-list li::before { content: counter(task); display: grid; place-items: center; width: 24px; height: 24px; margin-top: 1px; border-radius: 7px; background: var(--green-soft); color: var(--green-bright); font-size: 12px; font-weight: 750; }
.action-list strong { display: block; font-size: 13px; }
.action-list p { margin: 4px 0 0; color: var(--muted); font-size: 12px; line-height: 1.45; }
body[data-step="8"] .action-list strong { color: var(--text); }
body[data-step="8"] .action-list p { color: var(--green-bright); }
.lesson-note { margin-top: 20px; padding: 13px 14px; border-left: 4px solid var(--green); border-radius: 9px; background: var(--surface-soft); color: var(--muted); font-size: 12px; line-height: 1.5; }
.lesson-note strong { color: var(--text); }
body[data-step="8"] #lessonNote2 {
  color: var(--alert-red);
  font-weight: 700;
}
body[data-step="8"] #lessonNote2 strong {
  margin-right: 3px;
  padding: 1px 5px;
  border-radius: 4px;
  background: var(--green);
  color: #fff;
  font-weight: 700;
}
.success-check { margin-top: 20px; padding: 13px 14px; border-radius: 11px; background: var(--green-soft); color: var(--success-text); font-size: 12px; line-height: 1.5; }
.success-check strong { color: var(--text); }
.lesson-links { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.resource-link { display: inline-flex; align-items: center; gap: 6px; padding: 8px 10px; border: 1px solid var(--line); color: var(--text); text-decoration: none; font-size: 12px; }
.resource-link:hover { border-color: var(--green); background: var(--green-soft); }

.lesson-controls { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-top: 28px; }
.secondary-button, .primary-button { padding: 11px 16px; border: 1px solid var(--line); }
.secondary-button { color: var(--text); background: var(--surface); }
.primary-button { border-color: var(--green); color: white; background: var(--green); font-weight: 680; }
.text-button { padding: 10px; border: 0; color: var(--muted); background: transparent; }
button:disabled { opacity: .35; cursor: not-allowed; }

@media (max-width: 900px) {
  .learning-grid { grid-template-columns: 1fr; }
  .action-panel { max-width: none; }
}

@media (max-width: 800px) {
  .site-header { flex-wrap: wrap; gap: 8px; }
  .header-tools { width: 100%; justify-content: flex-end; gap: 8px; }
}

@media (max-width: 600px) {
  .site-header { padding: 10px 16px; }
  .training-return-link { padding: 6px 9px; font-size: 11px; }
  .course-time { display: none; }
  .lesson-shell { padding: 28px 16px 32px; }
  .lesson-title-row { display: block; }
  .duration-chip { display: inline-block; margin-top: 14px; }
  .media-panel { border-radius: 13px; }
  .action-panel { padding: 18px; border-radius: 13px; }
  .lesson-controls { flex-wrap: wrap; }
  .text-button { order: 3; width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; }
}

/* Compact FSC training shell, adapted from Rescue Me without its blue palette. */
.media-column, .action-column { min-width: 0; }

.media-panel { position: relative; }
.media-play-button {
  position: absolute;
  inset: 50% auto auto 50%;
  display: grid;
  place-items: center;
  width: 68px;
  height: 68px;
  padding: 0;
  border: 3px solid rgba(255, 255, 255, .94);
  border-radius: 50%;
  background: rgba(102, 143, 24, .94);
  color: #fff;
  box-shadow: 0 8px 28px rgba(0, 0, 0, .3);
  cursor: pointer;
  transform: translate(-50%, -50%);
}
.media-play-button:hover { background: var(--green); transform: translate(-50%, -50%) scale(1.06); }
.media-play-button:focus-visible, .media-panel img:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
.media-play-button span { margin-left: 4px; font-size: 28px; line-height: 1; }
.media-play-button[hidden], .media-panel video[hidden], .media-panel img[hidden] { display: none !important; }
.media-panel img.is-video-poster { cursor: pointer; }

.login-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 14px;
}
.login-actions[hidden] { display: none; }
.login-actions a {
  display: grid;
  place-items: center;
  min-height: 48px;
  padding: 9px 12px;
  border: 2px solid var(--green);
  border-radius: 11px;
  background: #D0E09F;
  color: #293024;
  font-weight: 750;
  text-align: center;
  text-decoration: none;
}
.login-actions a:hover { background: #c3d58c; }

.restart-dialog {
  width: min(440px, calc(100% - 32px));
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
  color: var(--text);
  box-shadow: 0 24px 80px rgba(0, 0, 0, .35);
}
.restart-dialog::backdrop { background: rgba(14, 18, 12, .72); }
.restart-dialog p { margin: 14px 0 0; color: var(--muted); line-height: 1.5; }
.restart-dialog-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 22px; }

@media (min-width: 901px) {
  body.layout-v2 .site-header { padding: 7px clamp(22px, 2.6vw, 44px); }
  body.layout-v2 .brand-lockup { gap: 10px; }
  body.layout-v2 .brand-mark { width: 32px; height: 32px; border-radius: 10px; font-size: 13px; }
  body.layout-v2 .brand-title { font-size: 14px; }
  body.layout-v2 .brand-subtitle { margin-top: 1px; font-size: 11px; }
  body.layout-v2 .header-tools { gap: 11px; }
  body.layout-v2 .course-time { font-size: 12px; }
  body.layout-v2 .theme-toggle { padding: 6px 10px; }
  body.layout-v2 .progress-track { height: 4px; }
  body.layout-v2 .step-nav { display: flex; flex-wrap: nowrap; gap: 15px; width: max-content; min-width: 0; max-width: none; box-sizing: border-box; padding: 6px clamp(10px, 1vw, 18px); }
  body.layout-v2 .step-button { grid-template-columns: 23px max-content; gap: 5px; flex: 0 0 auto; min-width: 0; padding: 6px 4px; border-radius: 10px; }
  body.layout-v2 .step-copy { min-width: 0; }
  body.layout-v2 .step-button.has-no-duration .step-copy { align-self: start; padding-top: 1px; }
  body.layout-v2 .step-number { width: 23px; height: 23px; font-size: 11px; }
  body.layout-v2 .step-copy strong { font-size: 11px; line-height: 1.15; white-space: nowrap; }
  body.layout-v2 .step-copy span { margin-top: 1px; font-size: 10px; }
  body.layout-v2 .lesson-shell { width: min(1600px, calc(100% - 32px)); padding: 12px 0 18px; }
  body.layout-v2 .step-kicker { margin-bottom: 4px; font-size: 10px; line-height: 1.2; }
  body.layout-v2 .lesson-title-row { align-items: flex-end; gap: 18px; }
  body.layout-v2 h1 { font-size: clamp(29px, 2.55vw, 38px); line-height: 1.02; }
  body.layout-v2 .lesson-summary { max-width: 980px; margin-top: 4px; font-size: 14px; line-height: 1.35; }
  body.layout-v2 .duration-chip { padding: 5px 8px; font-size: 11px; }
  body.layout-v2 .learning-grid { grid-template-columns: minmax(0, 2fr) minmax(320px, 1fr); gap: 16px; margin-top: 12px; align-items: stretch; }
  body.layout-v2 .action-column { display: flex; }
  body.layout-v2 .action-panel { flex: 1; width: 100%; min-height: 100%; padding: 14px; border-radius: 15px; }
  body.layout-v2 .action-heading-row { gap: 10px; }
  body.layout-v2 .panel-eyebrow { margin-bottom: 2px; font-size: 10px; }
  body.layout-v2 h2 { font-size: 21px; }
  body.layout-v2 .complete-button { padding: 6px 9px; font-size: 11px; }
  body.layout-v2 .action-list { gap: 12px; margin-top: 14px; }
  body.layout-v2 .action-list li { grid-template-columns: 25px 1fr; gap: 8px; }
  body.layout-v2 .action-list li::before { width: 22px; height: 22px; font-size: 11px; }
  body.layout-v2 .action-list strong { font-size: 15px; line-height: 1.3; }
  body.layout-v2 .action-list p { margin-top: 3px; font-size: 14px; line-height: 1.4; }
  body.layout-v2 .lesson-note { margin-top: 14px; padding: 11px 12px; font-size: 14px; line-height: 1.4; }
  body.layout-v2 .success-check { margin-top: 14px; padding: 11px 12px; font-size: 14px; line-height: 1.4; }
  body.layout-v2 .lesson-links { gap: 6px; margin-top: 8px; }
  body.layout-v2 .resource-link { padding: 7px 9px; font-size: 13px; }
  body.layout-v2 .lesson-controls { gap: 7px; margin: 0; }
  body.layout-v2 .action-panel > .lesson-controls-slot { margin: -14px -14px 10px; padding: 7px 14px; border-top: 1px solid var(--green); border-bottom: 1px solid var(--green); border-radius: 14px 14px 0 0; background: var(--green-soft); }
  body.layout-v2 .secondary-button, body.layout-v2 .primary-button { padding: 8px 10px; }
  body.layout-v2 .text-button { padding: 6px 9px; border: 1px solid var(--line); border-radius: 10px; background: transparent; }
  body.layout-v2 .lesson-controls button { min-height: 32px; padding-block: 6px; font-size: 11px; white-space: nowrap; }
  body.layout-v2 .media-panel { border-radius: 15px; }
}

@media (min-width: 901px) and (max-width: 1199px) {
  body.layout-v2 .lesson-shell { width: calc(100% - 24px); }
  body.layout-v2 .learning-grid { grid-template-columns: minmax(0, 2fr) minmax(300px, 1fr); gap: 13px; }
  body.layout-v2 .action-panel { padding: 13px; }
  body.layout-v2 .action-panel > .lesson-controls-slot { margin: -13px -13px 10px; padding-right: 13px; padding-left: 13px; }
}

@media (max-width: 900px) {
  body.layout-v2 .lesson-shell { padding-top: 22px; }
  body.layout-v2 .learning-grid { gap: 16px; }
  body.layout-v2 .action-panel { flex: none; min-height: 0; }
  body.layout-v2 .action-panel > .lesson-controls-slot { margin: -18px -18px 16px; padding: 9px 18px; border-bottom: 1px solid var(--green); background: var(--green-soft); }
  body.layout-v2 .lesson-controls { margin: 0; }
}

@media (max-width: 480px) {
  .login-actions { grid-template-columns: 1fr; }
  .media-play-button { width: 56px; height: 56px; }
  .media-play-button span { font-size: 23px; }
}