:root {
  color-scheme: light;
  --canvas: #f6f8f3;
  --panel: #fffefa;
  --ink: #193128;
  --muted: #4c6257;
  --line: #dbe4db;
  --accent: #145e48;
  --accent-deep: #103f33;
  --accent-soft: #e3f0e7;
  --mint: #c9e8ce;
  --amber: #ebcf94;
  --radius: 18px;
  --shadow: 0 8px 26px rgba(24, 62, 42, .055);
  --nav-bottom: 66px;
  font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--canvas);
  color: var(--ink);
  line-height: 1.5;
  font-synthesis: none;
}

*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; min-height: 100dvh; display: flex; flex-direction: column; }
a { color: inherit; text-decoration: none; }
button, input, select { color: inherit; font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: default; }
img { display: block; max-width: 100%; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { line-height: 1.17; letter-spacing: -.027em; overflow-wrap: break-word; }
h1 { font-size: clamp(2.1rem, 4.3vw, 3.32rem); font-weight: 760; }
h2 { font-size: clamp(1.36rem, 2.3vw, 1.88rem); font-weight: 730; }
h3 { font-size: 1.15rem; font-weight: 700; }
:focus-visible { outline: 3px solid #2d8c6b; outline-offset: 4px; }
[tabindex="-1"]:focus { outline: none; }
.icon { flex: 0 0 auto; vertical-align: middle; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  left: 12px;
  top: -100px;
  z-index: 20;
  border-radius: 8px;
  padding: 12px 18px;
  color: white;
  background: var(--accent-deep);
}
.skip-link:focus { top: 12px; }

.shell { width: min(calc(100% - 64px), 1120px); margin-inline: auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: #fcfdf9;
  border-bottom: 1px solid var(--line);
}
.header-inner { min-height: 73px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.4rem; letter-spacing: -.056em; line-height: 1.03; }
.brand img { width: 39px; height: 39px; }
.brand-accent { color: var(--accent); }
.brand small { display: block; margin-top: 4px; font-size: .57rem; font-weight: 750; letter-spacing: .18em; color: var(--muted); }
.desktop-nav { display: flex; align-items: center; gap: 3px; }
.desktop-nav a { border-radius: 9px; padding: 10px 13px; color: var(--muted); font-size: .92rem; font-weight: 630; white-space: nowrap; }
.desktop-nav a:hover, .desktop-nav a[aria-current] { color: var(--accent-deep); background: var(--accent-soft); }
.header-progress {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 100px;
  background: #f4f8f1;
  color: var(--muted);
  font-size: .81rem;
  padding: 8px 11px;
  white-space: nowrap;
}
.header-progress strong { color: var(--accent-deep); }
.progress-orb {
  width: 17px;
  height: 17px;
  border-radius: 100%;
  position: relative;
  background: conic-gradient(var(--accent) var(--done), #cadcd1 var(--done));
}
.progress-orb::after { content: ""; position: absolute; inset: 3px; background: #f4f8f1; border-radius: 100%; }
.mobile-nav { display: none; }
.main { flex: 1; padding-block: 28px 48px; scroll-margin-top: 88px; }
.footer { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; padding: 19px 0 25px; border-top: 1px solid var(--line); color: var(--muted); font-size: .84rem; }
.footer a { color: var(--accent); font-weight: 650; }
.footer a:hover, .text-link:hover { text-decoration: underline; text-underline-offset: .23em; }
.notice {
  position: fixed;
  z-index: 8;
  bottom: 22px;
  left: 50%;
  width: max-content;
  max-width: calc(100vw - 32px);
  transform: translate(-50%, 8px);
  padding: 11px 16px;
  border-radius: 9px;
  background: var(--accent-deep);
  color: white;
  font-size: .88rem;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s, transform .18s;
}
.notice.is-visible { opacity: 1; transform: translate(-50%, 0); }
.no-js { padding: 20px; border: 1px solid var(--line); border-radius: var(--radius); }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 9px 15px;
  font-size: .94rem;
  font-weight: 700;
  line-height: 1.25;
  text-align: center;
  transition: background-color .17s, border-color .17s;
}
.button .icon { width: 17px; height: 17px; }
.button.primary { background: var(--accent); color: white; }
.button.primary:hover:not(:disabled) { background: var(--accent-deep); }
.button.secondary { background: var(--panel); border-color: #ccdcd0; color: var(--accent-deep); }
.button.secondary:hover:not(:disabled) { background: var(--accent-soft); }
.button:disabled { color: #53665a; background: #edf1eb; border-color: var(--line); opacity: .84; }
.button-row { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
.text-link { display: inline-flex; align-items: center; gap: 6px; font-size: .92rem; font-weight: 700; color: var(--accent); }
.text-link .icon { width: 16px; height: 16px; }
.panel { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); box-shadow: var(--shadow); }
.eyebrow { color: var(--accent); font-size: .72rem; font-weight: 760; letter-spacing: .13em; line-height: 1.35; }
.fine-print, .results-count { color: var(--muted); font-size: .88rem; }
.fine-print { margin-top: 13px; }

.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  min-height: 332px;
  display: flex;
  align-items: center;
  border-radius: 24px;
  background: linear-gradient(110deg, #123d32 3%, #174d3e 55%, #185344 100%);
  color: #fffdf4;
  box-shadow: 0 12px 32px rgba(18, 61, 50, .13);
}
.hero-content { position: relative; z-index: 1; width: 59%; padding: 40px 0 42px 45px; }
.hero .hero-kicker { display: flex; align-items: center; gap: 9px; margin-bottom: 13px; color: #d9eadb; font-size: .73rem; font-weight: 740; letter-spacing: .15em; }
.hero-kicker span { width: 8px; height: 8px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 0 4px rgba(235,207,148,.16); }
.hero h1 { font-size: clamp(2.25rem, 4.6vw, 3.58rem); letter-spacing: -.057em; line-height: 1.06; }
.hero h1 em { display: block; color: #cbe9ce; font-family: Georgia, "Times New Roman", serif; font-weight: 500; letter-spacing: -.064em; }
.hero-content > p:not(.hero-kicker) { max-width: 495px; margin: 16px 0 24px; color: #e2eee5; font-size: 1.02rem; }
.hero-art { width: min(47%, 510px); height: auto; position: absolute; right: 1.3%; top: 50%; transform: translateY(-50%); pointer-events: none; }
.hero-primary { background: #f4f8e9; color: var(--accent-deep); }
.hero-primary:hover { background: #d7ebd6; }
.hero-secondary { background: rgba(255,255,255,.06); color: #f5fff5; border-color: #87ac9b; }
.hero-secondary:hover { background: rgba(255,255,255,.15); }
.hero :focus-visible { outline-color: #f5d694; }

.home-section { margin-top: 34px; }
.section-head { display: flex; align-items: end; justify-content: space-between; flex-wrap: wrap; gap: 8px 16px; margin-bottom: 15px; }
.section-head h2 { margin-top: 5px; }
.module-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 15px; }
.module-card { padding: 19px; display: flex; flex-direction: column; gap: 7px; transition: border-color .17s, background-color .17s; }
.module-card:hover, .shortcut:hover, .topic-tile:focus-within, .topic-tile:hover, .mode-card:hover, .page-link:hover, .stat:hover { border-color: #9bc1ab; }
.module-card-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 5px; }
.module-icon { display: inline-grid; place-items: center; width: 46px; height: 46px; border-radius: 13px; flex: 0 0 auto; }
.module-icon .icon { width: 24px; height: 24px; }
.tint-cd { background: #e2f0e4; color: #175e48; }
.tint-rpd { background: #f6ead7; color: #774825; }
.tint-fixed { background: #e6eff3; color: #305b70; }
.module-number { color: #53665b; font-size: .8rem; font-weight: 750; font-variant-numeric: tabular-nums; }
.module-card p { color: var(--muted); font-size: .93rem; min-height: 43px; }
.module-progress { margin-top: auto; padding-top: 6px; display: grid; gap: 5px; }
.module-progress span { font-size: .77rem; color: var(--muted); font-weight: 650; }
progress { display: block; width: 100%; height: 6px; appearance: none; border: none; border-radius: 99px; background: #e5ede6; overflow: hidden; color: var(--accent); }
progress::-webkit-progress-bar { background: #e5ede6; border-radius: 99px; }
progress::-webkit-progress-value { background: #2d8263; border-radius: 99px; }
progress::-moz-progress-bar { background: #2d8263; border-radius: 99px; }
.shortcut-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 255px), 1fr)); gap: 13px; }
.shortcut, .mode-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 13px;
  align-items: center;
  text-align: left;
  padding: 13px;
}
.shortcut strong, .mode-card strong { display: block; line-height: 1.28; }
.shortcut small, .mode-card small { display: block; margin-top: 3px; color: var(--muted); font-size: .86rem; }
.shortcut > .icon, .mode-card > .icon { color: var(--accent); width: 18px; }

.page-head { margin: 8px 0 23px; }
.page-head .eyebrow { margin-bottom: 7px; }
.lede { margin-top: 10px; color: var(--muted); font-size: 1.04rem; max-width: 660px; }
.topic-tools { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 15px; }
.search-field { display: flex; align-items: center; flex: 1 1 310px; gap: 10px; border: 1px solid #cad8ce; border-radius: 11px; background: var(--panel); padding: 0 13px; color: var(--accent); }
.search-field:focus-within { border-color: #328566; outline: 2px solid #83b39a; outline-offset: 1px; }
.search-field input { outline: none; padding: 12px 0; border: 0; min-width: 0; width: 100%; color: var(--ink); background: transparent; }
.search-field input::placeholder { color: #5f7568; }
.chips { display: flex; flex-wrap: wrap; align-items: center; gap: 7px; }
.chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  min-height: 42px;
  padding: 7px 12px;
  background: var(--panel);
  border: 1px solid #d0ded2;
  border-radius: 100px;
  font-size: .87rem;
  line-height: 1.2;
  font-weight: 690;
  color: var(--muted);
}
.chip .icon { width: 15px; height: 15px; }
.chip:hover { background: var(--accent-soft); }
.chip[aria-current], .chip[aria-pressed="true"] { color: white; background: var(--accent); border-color: var(--accent); }
.results-count { margin: 18px 0 13px; }
.topic-group + .topic-group { margin-top: 24px; }
.topic-group h2 { display: flex; align-items: center; gap: 9px; margin-bottom: 10px; font-size: 1.27rem; }
.topic-group .module-icon { width: 35px; height: 35px; border-radius: 9px; }
.topic-group .module-icon .icon { width: 18px; height: 18px; }
.topic-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.topic-tile { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; min-height: 82px; padding-right: 8px; border-radius: 13px; box-shadow: none; }
.topic-link { display: grid; grid-template-columns: 37px minmax(0, 1fr); align-items: start; gap: 10px; align-self: stretch; padding: 12px; }
.topic-link strong { display: block; font-weight: 720; line-height: 1.25; }
.topic-link small { display: block; margin-top: 3px; font-size: .87rem; color: var(--muted); }
.topic-index { background: #edf2eb; color: #456354; display: grid; place-items: center; height: 34px; border-radius: 8px; font-size: .78rem; font-weight: 750; font-variant-numeric: tabular-nums; }
.topic-index.studied-index { background: #ddf1e2; color: var(--accent); }
.topic-index .icon { width: 16px; height: 16px; }
.icon-button { display: inline-grid; place-items: center; min-width: 44px; min-height: 44px; border-radius: 9px; border: 0; padding: 0; color: var(--accent); background: transparent; }
.icon-button:hover, .icon-button[aria-pressed="true"] { background: var(--accent-soft); }
.icon-button[aria-pressed="true"] .icon, .lesson-actions button[data-action="bookmark"][aria-pressed="true"] .icon { fill: #83ba9b; }
.empty { padding: 28px; text-align: center; }
.empty p { color: var(--muted); margin-top: 8px; }
.empty .button { margin-top: 14px; }

.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 5px; color: var(--accent); font-size: .86rem; font-weight: 650; margin: 3px 0 13px; }
.breadcrumb a { padding: 6px 0; }
.breadcrumb a:hover { text-decoration: underline; text-underline-offset: .2em; }
.breadcrumb .icon { width: 13px; height: 13px; color: #617c6b; }
.lesson-kicker { display: flex; flex-wrap: wrap; align-items: center; gap: 7px 12px; margin-bottom: 10px; color: var(--muted); font-size: .84rem; font-weight: 650; }
.module-tag { display: inline-flex; align-items: center; font-size: .78rem; font-weight: 730; line-height: 1.3; padding: 6px 9px; border-radius: 7px; }
.lesson-actions { margin-top: 16px; }
.study-button[aria-pressed="true"] { background: #e4f0e7; color: var(--accent-deep); border-color: #b5d5bf; }
.study-button[aria-pressed="true"]:hover:not(:disabled) { color: white; background: var(--accent); }
.lesson-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(255px, .42fr); gap: 17px; align-items: start; }
.lesson-body { padding: clamp(18px, 3vw, 28px); }
.lesson-body h2 { font-size: 1.38rem; }
.point-list { list-style: none; counter-reset: points; padding: 0; margin: 18px 0 0; display: grid; gap: 16px; }
.point-list li { position: relative; padding-left: 39px; counter-increment: points; }
.point-list li::before {
  content: counter(points, decimal-leading-zero);
  display: grid;
  place-items: center;
  position: absolute;
  top: 0;
  left: 0;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: .72rem;
  font-weight: 760;
}
.point-list h3 { padding-top: 2px; margin-bottom: 5px; }
.point-list p, .about-body p { color: var(--muted); line-height: 1.6; }
.lesson-side { display: grid; gap: 13px; }
.cue-box { background: #f8eedb; border: 1px solid #e9d8b6; padding: 16px; border-radius: 15px; color: #4f3920; }
.cue-box h2 { display: flex; align-items: center; gap: 6px; font-size: 1.06rem; }
.cue-box h2 .icon { width: 17px; height: 17px; }
.cue-box p, .recall-box p:not(.eyebrow) { margin-top: 8px; font-size: .92rem; }
.recall-box { padding: 16px; }
.recall-box h2 { margin-top: 7px; font-size: 1.14rem; }
.recall-box details { margin-top: 8px; }
.recall-box summary { color: var(--accent); font-size: .9rem; font-weight: 720; min-height: 42px; }
summary { cursor: pointer; }
summary::-webkit-details-marker { display: none; }
.recall-box summary, .result-row summary { list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.recall-box summary .icon, .result-row summary > .icon:last-child { width: 15px; height: 15px; }
details[open] > summary .icon:last-child { transform: rotate(180deg); }
.recall-box details p { color: var(--muted); }
.lesson-source { padding: 4px 2px; color: var(--muted); font-size: .83rem; }
.lesson-source strong { color: var(--ink); }
.lesson-source p { margin-top: 2px; }
.lesson-source a { margin-top: 4px; font-size: .83rem; }
.lesson-pagination { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 11px; margin-top: 16px; }
.page-link { display: flex; align-items: center; gap: 9px; padding: 12px 14px; border-radius: 12px; min-height: 61px; }
.page-link.next { grid-column: 2; justify-content: flex-end; text-align: right; }
.page-link.prev { grid-column: 1; grid-row: 1; }
.page-link small { display: block; font-size: .64rem; letter-spacing: .1em; color: var(--accent); font-weight: 750; }
.page-link strong { display: block; margin-top: 2px; font-size: .94rem; line-height: 1.25; }
.page-link .icon { width: 17px; color: var(--accent); }
.diagram-box { margin-top: 20px; padding: 14px; background: #eff6ef; border: 1px solid #d7e7da; border-radius: 12px; }
.diagram-box h3 { margin-bottom: 9px; }
.diagram-choices .chip { padding-inline: 10px; }
.diagram-image { display: grid; place-items: center; }
.diagram-image svg { display: block; width: 100%; max-width: 460px; height: auto; margin-top: 6px; }
.diagram-caption { margin-top: 9px; color: #305347; font-size: .91rem; }
.diagram-legend { display: flex; flex-wrap: wrap; gap: 4px 14px; color: var(--muted); font-size: .75rem; }
.diagram-legend span::before { content: ""; display: inline-block; width: 9px; height: 9px; margin-right: 5px; border: 1px solid #477e68; border-radius: 3px; background: #fffdf5; }
.diagram-legend span:nth-child(2)::before { background: #f0cba9; border-color: #9e512d; border-style: dashed; }

.study-width { width: min(100%, 710px); }
.card-toolbar { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 11px; margin-bottom: 16px; }
.field-label { display: grid; gap: 4px; flex: 1 1 175px; max-width: 375px; color: var(--muted); font-size: .82rem; font-weight: 700; }
.field-label select { width: 100%; min-height: 46px; border: 1px solid #ccdcd0; border-radius: 10px; padding: 8px; color: var(--ink); background: var(--panel); font-size: 1rem; font-weight: 600; }
.card-meta { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 8px; color: var(--muted); font-size: .83rem; font-weight: 680; margin-bottom: 8px; }
.flashcard {
  width: 100%;
  display: grid;
  gap: 17px;
  place-items: center;
  align-content: center;
  min-height: 250px;
  text-align: center;
  padding: 26px;
  border: 1px solid #28624f;
  border-radius: 21px;
  color: #f6fdf3;
  background: radial-gradient(ellipse at 80% 20%, #256550, transparent 60%), #153f34;
  box-shadow: var(--shadow);
}
.flashcard.is-revealed { color: var(--accent-deep); background: #e4f1e5; border-color: #afcdb8; }
.card-face-label { font-size: .73rem; color: #c2e1cb; font-weight: 760; letter-spacing: .14em; }
.flashcard.is-revealed .card-face-label { color: var(--accent); }
.card-face-text { font-size: clamp(1.24rem, 3.5vw, 1.83rem); font-weight: 700; letter-spacing: -.023em; line-height: 1.26; max-width: 520px; }
.card-flip-label { display: inline-flex; align-items: center; gap: 7px; font-size: .85rem; font-weight: 690; border-radius: 99px; padding: 7px 10px; background: rgba(230, 255, 236, .13); }
.flashcard.is-revealed .card-flip-label { background: #d0e6d5; }
.card-flip-label .icon { width: 15px; height: 15px; }
.card-controls { display: flex; align-items: center; flex-wrap: wrap; justify-content: space-between; gap: 8px; margin-top: 12px; }

.quiz-mode-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; max-width: 820px; }
.mode-card { padding: 15px; color: var(--ink); }
.mode-mixed { border-color: #a3c9b1; background: #edf6ec; }
.resume-box { max-width: 820px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; align-items: center; padding: 13px 15px; margin-bottom: 15px; }
.resume-box strong, .resume-box small { display: block; }
.resume-box small { color: var(--muted); font-size: .86rem; }
.quiz-view { margin-inline: auto; }
.quiz-top { display: flex; justify-content: space-between; flex-wrap: wrap; align-items: center; gap: 6px; margin: 4px 0 9px; font-size: .89rem; font-weight: 650; color: var(--muted); }
.quiz-top a { min-height: 35px; }
.quiz-progress { margin-bottom: 14px; }
.quiz-panel { padding: clamp(16px, 3vw, 27px); }
.quiz-panel h1 { font-size: clamp(1.34rem, 3.3vw, 2.05rem); margin: 12px 0 16px; }
.quiz-panel fieldset { min-inline-size: 0; border: 0; padding: 0; margin: 0; }
.quiz-choices { display: grid; gap: 8px; }
.quiz-option { display: flex; position: relative; align-items: center; gap: 10px; min-height: 49px; padding: 8px 10px; border: 1px solid #d6e2d8; border-radius: 10px; line-height: 1.35; font-size: .96rem; }
label.quiz-option { cursor: pointer; }
.quiz-option input { position: absolute; opacity: 0; }
.quiz-option:has(input:checked) { border-color: #4b9975; background: #e6f1e7; }
.quiz-option:has(input:focus-visible) { outline: 3px solid #2d8c6b; outline-offset: 2px; }
label.quiz-option:hover { border-color: #8db99e; }
.choice-letter { display: inline-grid; place-items: center; min-width: 29px; height: 29px; border-radius: 7px; color: #375648; background: #edf1eb; font-weight: 730; font-size: .83rem; }
.quiz-option:has(input:checked) .choice-letter { color: white; background: var(--accent); }
.quiz-option > .icon:last-child { margin-left: auto; width: 17px; height: 17px; }
.correct { color: #185440; background: #e6f3e7; }
.incorrect { color: #783c30; background: #faede7; }
.quiz-option.correct { border-color: #a9cfb2; }
.quiz-option.incorrect { border-color: #dfbbae; }
.quiz-feedback { border-radius: 10px; padding: 13px; margin-top: 12px; scroll-margin-top: 85px; }
.quiz-feedback p { margin-top: 4px; }
.quiz-feedback a { margin-top: 7px; }
.quiz-actions { display: flex; justify-content: flex-end; margin-top: 15px; }
.result-banner { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 23px; border-radius: 18px; background: #184b3c; color: white; }
.result-banner .eyebrow { color: #c5e2ce; }
.result-banner h1 { font-size: clamp(1.65rem, 4vw, 2.75rem); margin: 6px 0 8px; }
.result-banner p { color: #e3eee6; }
.score-disc { display: flex; flex-shrink: 0; align-items: baseline; justify-content: center; align-content: center; flex-wrap: wrap; width: 82px; height: 82px; border-radius: 50%; border: 3px solid #b4d7bd; font-size: 1.66rem; font-weight: 760; }
.score-disc span { font-size: .86rem; }
.result-actions { margin: 14px 0 22px; }
.result-list { display: grid; gap: 8px; }
.result-list h2 { margin-bottom: 4px; font-size: 1.38rem; }
.result-row { border-radius: 12px; }
.result-row summary { justify-content: flex-start; min-height: 61px; padding: 9px 12px; }
.result-row summary > .icon:last-child { margin-left: auto; }
.result-row summary strong { display: block; line-height: 1.25; }
.result-row summary small { display: block; color: var(--muted); font-size: .65rem; font-weight: 720; letter-spacing: .1em; }
.result-mark { display: grid; place-items: center; width: 34px; height: 34px; flex-shrink: 0; border-radius: 8px; }
.result-mark .icon { width: 16px; }
.result-detail { border-top: 1px solid var(--line); padding: 12px 14px; }
.result-detail p { color: var(--muted); margin-top: 7px; }
.result-detail a { margin-top: 8px; }

.stat-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-bottom: 14px; }
.stat { display: grid; gap: 3px; padding: 16px; }
.stat .icon { color: var(--accent); margin-bottom: 3px; }
.stat strong { font-size: clamp(1.4rem, 3vw, 2rem); line-height: 1.1; letter-spacing: -.03em; }
.stat span { color: var(--muted); font-size: .87rem; }
.progress-grid { display: grid; grid-template-columns: 1fr .78fr; gap: 14px; align-items: start; }
.progress-panel { padding: 17px; }
.progress-panel h2 { margin-bottom: 12px; font-size: 1.28rem; }
.progress-panel p { margin: 8px 0 13px; color: var(--muted); }
.module-track { display: block; border-radius: 9px; padding: 8px; margin-inline: -8px; }
.module-track + .module-track { margin-top: 8px; }
.module-track:hover { background: #f0f5ee; }
.module-track > span { display: flex; align-items: center; gap: 8px; font-weight: 690; }
.module-track > span > .icon:last-child { margin-left: auto; width: 16px; color: var(--accent); }
.module-track .module-icon { width: 34px; height: 34px; border-radius: 8px; }
.module-track .module-icon .icon { width: 19px; height: 19px; }
.about-body { max-width: 760px; }
.about-body h2:not(:first-child) { margin-top: 19px; }
.about-body p { margin-top: 10px; }
.about-body ul { padding-left: 19px; }
.about-body li + li { margin-top: 6px; }

@media (min-width: 1000px) {
  .header-progress { min-width: 126px; justify-content: center; }
}

@media (max-width: 920px) {
  .shell { width: calc(100% - 44px); }
  .desktop-nav a { padding-inline: 9px; }
  .hero-content { width: 63%; padding-left: 30px; }
  .hero-art { right: -1.4%; width: 45%; }
  .module-card { padding: 15px; }
}

@media (max-width: 760px) {
  .shell { width: calc(100% - 30px); }
  body { padding-bottom: calc(var(--nav-bottom) + env(safe-area-inset-bottom, 0px)); }
  .header-inner { min-height: 60px; }
  .desktop-nav { display: none; }
  .header-progress { min-height: 40px; }
  .mobile-nav {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    position: fixed;
    z-index: 6;
    inset: auto 0 0;
    min-height: var(--nav-bottom);
    padding: 5px max(6px, env(safe-area-inset-right)) calc(5px + env(safe-area-inset-bottom, 0px)) max(6px, env(safe-area-inset-left));
    background: #fcfdf9;
    border-top: 1px solid #d8e3d9;
    box-shadow: 0 -4px 15px rgba(24,62,42,.04);
  }
  .mobile-nav a {
    display: grid;
    justify-items: center;
    align-content: center;
    gap: 2px;
    border-radius: 9px;
    min-height: 49px;
    color: var(--muted);
    font-size: .67rem;
    font-weight: 650;
  }
  .mobile-nav a[aria-current] { color: var(--accent-deep); background: var(--accent-soft); font-weight: 760; }
  .mobile-nav .icon { width: 20px; height: 20px; }
  .main { padding-block: 15px 29px; scroll-margin-top: 70px; }
  .notice { bottom: calc(var(--nav-bottom) + env(safe-area-inset-bottom, 0px) + 9px); }
  .hero { min-height: 0; border-radius: 19px; }
  .hero-content { width: 100%; padding: 25px 20px 24px; }
  .hero h1 { font-size: clamp(1.6rem, 7.95vw, 3.1rem); }
  .hero .hero-kicker { margin-bottom: 10px; font-size: .65rem; }
  .hero-content > p:not(.hero-kicker) { font-size: .94rem; margin: 12px 0 17px; max-width: 400px; }
  .hero .button-row { gap: 8px; }
  .hero .button { padding-inline: 11px; gap: 6px; font-size: .9rem; }
  .hero-art { top: auto; right: -57px; bottom: -24px; transform: none; width: min(65%, 340px); opacity: .3; }
  .hero-art { mask-image: linear-gradient(90deg, transparent, black 46%); }
  .home-section { margin-top: 25px; }
  .section-head { margin-bottom: 11px; }
  .module-grid { grid-template-columns: 1fr; gap: 9px; }
  .module-card { display: grid; grid-template-columns: 43px minmax(0, 1fr) auto; gap: 3px 11px; padding: 13px; border-radius: 14px; }
  .module-card-top { display: contents; }
  .module-card-top .module-icon { grid-column: 1; grid-row: 1 / span 2; width: 43px; height: 43px; }
  .module-number { grid-column: 3; grid-row: 1; }
  .module-card h3 { grid-column: 2; grid-row: 1; font-size: 1.03rem; }
  .module-card p { grid-column: 2 / -1; grid-row: 2; min-height: auto; font-size: .85rem; }
  .module-card .module-progress { grid-column: 2 / -1; grid-row: 3; }
  .page-head { margin: 7px 0 17px; }
  .lede { font-size: .97rem; margin-top: 8px; }
  .topic-grid, .lesson-grid, .quiz-mode-grid, .progress-grid { grid-template-columns: 1fr; }
  .topic-tools { gap: 9px; }
  .topic-tools .search-field { flex-basis: 100%; }
  .chips .chip { min-height: 44px; }
  .topic-tile { min-height: 75px; }
  .topic-link { padding: 10px; gap: 8px; grid-template-columns: 33px minmax(0, 1fr); }
  .topic-link small { font-size: .84rem; }
  .topic-group + .topic-group { margin-top: 17px; }
  .lesson-grid { gap: 11px; }
  .lesson-actions { margin-top: 12px; }
  .breadcrumb { margin-bottom: 8px; }
  .lesson-body { border-radius: 14px; }
  .lesson-pagination { gap: 8px; }
  .page-link { padding: 10px; }
  .quiz-view { margin-inline: 0; }
  .stat-grid { gap: 7px; }
  .stat { padding: 11px; border-radius: 12px; }
  .stat span { font-size: .79rem; }
}

@media (max-width: 365px) {
  .shell { width: calc(100% - 22px); }
  .hero-content { padding-inline: 15px; }
  .hero .button { padding-inline: 9px; gap: 5px; font-size: .83rem; }
  .hero .button .icon { width: 15px; height: 15px; }
  .button { padding-inline: 10px; }
  .card-controls { display: grid; grid-template-columns: 1fr 1fr; }
  .card-controls .card-topic { order: 3; grid-column: 1 / -1; justify-content: center; min-height: 44px; }
  .result-banner { padding: 16px; }
  .score-disc { width: 65px; height: 65px; }
}

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