:root {
  --brand: #7fb73a;
  --brand-dark: #507f1f;
  --brand-soft: #eef6e4;
  --ink: #17211b;
  --muted: #6b756e;
  --line: #e7ebe6;
  --surface: #ffffff;
  --canvas: #f6f8f5;
  --warning: #e89731;
  --danger: #d95d52;
  --blue: #4d79a7;
  --shadow: 0 10px 30px rgba(23, 33, 27, .06);
  --radius: 14px;
}

* { box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--canvas);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, -apple-system, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
button, input { font: inherit; }
a { color: inherit; text-decoration: none; }
button { border: 0; cursor: pointer; }

.app-header {
  height: 68px;
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 0 max(32px, calc((100vw - 1380px) / 2));
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}
.brand { display: flex; align-items: center; gap: 13px; min-width: 220px; }
.brand img { width: 74px; height: 44px; object-fit: contain; }
.brand-copy { display: flex; flex-direction: column; line-height: 1.12; }
.brand-copy strong { color: var(--brand-dark); font-size: 1.08rem; font-weight: 700; letter-spacing: .04em; }
.brand-copy span { margin-top: 5px; color: #9aa29c; font-size: .74rem; letter-spacing: .08em; }
.top-nav { align-self: stretch; display: flex; align-items: stretch; gap: 8px; }
.top-nav a { position: relative; display: flex; align-items: center; padding: 0 18px; color: #56615a; font-size: .94rem; font-weight: 500; }
.top-nav a:hover { color: var(--ink); }
.top-nav a.active { color: var(--brand-dark); font-weight: 650; }
.top-nav a.active::after { content: ""; position: absolute; height: 3px; left: 16px; right: 16px; bottom: 0; border-radius: 3px 3px 0 0; background: var(--brand); }
.header-tools { margin-left: auto; margin-right: 0; display: flex; align-items: center; gap: 18px; }
.icon-button { width: 38px; height: 38px; display: grid; place-items: center; background: transparent; border-radius: 10px; color: #55605a; }
.icon-button:hover { background: #f1f4ef; }
.icon-button svg { width: 20px; height: 20px; }
.user-chip { display: flex; align-items: center; gap: 10px; padding-left: 18px; border-left: 1px solid var(--line); }
.avatar { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 50%; background: var(--brand-soft); color: var(--brand-dark); font-weight: 700; }
.user-meta { line-height: 1.25; }
.user-meta strong { display: block; font-size: .88rem; }
.user-meta span { color: #879089; font-size: .74rem; }
.admin-entry { padding: 7px 11px; border-radius: 8px; background: #f1f4ef; color: #526058; font-size: .78rem; font-weight: 650; white-space: nowrap; }
.admin-entry:hover { background: var(--brand-soft); color: var(--brand-dark); }

.page { width: min(1380px, calc(100% - 64px)); margin: 0 auto; padding: 30px 0 48px; }
.page-title-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 22px; }
.page-eyebrow { color: var(--brand-dark); font-size: .78rem; font-weight: 700; letter-spacing: .12em; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 7px; font-size: clamp(1.7rem, 2.3vw, 2.25rem); line-height: 1.22; letter-spacing: -.035em; }
.page-title-row p { margin: 0; color: var(--muted); font-size: .94rem; }
.date-badge { color: #5b665f; font-size: .88rem; white-space: nowrap; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.section-head h2 { margin: 0; font-size: 1.1rem; letter-spacing: -.01em; }
.section-head a, .text-link { color: var(--brand-dark); font-size: .85rem; font-weight: 600; }
.muted { color: var(--muted); }
.subtle { color: #8b948e; font-size: .82rem; }
.tag { display: inline-flex; align-items: center; height: 25px; padding: 0 9px; border-radius: 6px; background: #f0f3ef; color: #5c675f; font-size: .75rem; font-weight: 600; }
.tag.required { background: #fff1df; color: #a35e10; }
.tag.green { background: var(--brand-soft); color: var(--brand-dark); }
.tag.blue { background: #edf3f9; color: #426b94; }
.tag.red { background: #fff0ee; color: #b6483f; }
.progress { height: 7px; overflow: hidden; border-radius: 99px; background: #edf0ec; }
.progress > span { display: block; height: 100%; border-radius: inherit; background: var(--brand); }
.button { min-height: 40px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 0 18px; border-radius: 9px; background: var(--brand); color: #fff; font-weight: 650; font-size: .88rem; box-shadow: 0 5px 14px rgba(127,183,58,.22); }
.button:hover { background: #70a62d; }
.button.secondary { color: #34413a; background: #fff; border: 1px solid #dfe5dd; box-shadow: none; }
.button.secondary:hover { background: #f5f7f4; }
.button.dark { background: #243028; box-shadow: none; }

/* Dashboard */
.dashboard-grid { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(300px, .72fr); gap: 22px; }
.hero-card { min-height: 255px; overflow: hidden; position: relative; padding: 30px 32px; background: #1f2c24; color: #fff; border: 0; }
.hero-card::before { content: ""; position: absolute; width: 290px; height: 290px; right: -55px; top: -90px; border: 42px solid rgba(141,195,75,.22); border-radius: 50%; }
.hero-card::after { content: ""; position: absolute; width: 150px; height: 150px; right: 112px; bottom: -104px; border: 26px solid rgba(255,255,255,.08); border-radius: 50%; }
.hero-content { position: relative; z-index: 1; max-width: 620px; }
.hero-kicker { margin-bottom: 13px; color: #b9d990; font-size: .78rem; font-weight: 700; letter-spacing: .13em; }
.hero-card h2 { margin-bottom: 12px; font-size: 1.75rem; line-height: 1.3; letter-spacing: -.025em; }
.hero-card p { max-width: 520px; color: #c9d0cb; font-size: .9rem; }
.hero-actions { display: flex; align-items: center; gap: 18px; margin-top: 24px; }
.hero-actions .button { background: var(--brand); }
.hero-progress { display: flex; align-items: center; gap: 10px; color: #d9dedb; font-size: .82rem; }
.hero-progress .progress { width: 110px; background: rgba(255,255,255,.18); }
.hero-progress .progress > span { background: #9aca61; }
.today-card { padding: 22px 22px 20px; }
.today-top { display: flex; justify-content: space-between; gap: 16px; }
.today-top h2 { margin-bottom: 5px; font-size: 1.05rem; }
.today-top p { color: var(--muted); font-size: .8rem; }
.ring { width: 66px; height: 66px; position: relative; flex: 0 0 auto; display: grid; place-items: center; border-radius: 50%; background: conic-gradient(var(--brand) 0 62%, #edf1eb 62% 100%); }
.ring::before { content: ""; width: 50px; height: 50px; border-radius: 50%; background: #fff; }
.ring span { position: absolute; font-size: .8rem; font-weight: 750; }
.daily-steps { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 18px 0; }
.daily-step { padding: 13px; border-radius: 10px; background: #f7f9f5; }
.daily-step b { display: block; margin-bottom: 3px; font-size: 1.05rem; }
.daily-step span { color: var(--muted); font-size: .76rem; }
.today-card .button { width: 100%; }
.content-row { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(320px, .74fr); gap: 22px; margin-top: 22px; }
.course-panel, .deadline-panel { padding: 22px; }
.course-list { display: grid; gap: 13px; }
.course-item { display: grid; grid-template-columns: 88px minmax(0, 1fr) auto; align-items: center; gap: 16px; padding: 12px; border: 1px solid var(--line); border-radius: 11px; transition: border .2s, transform .2s; }
.course-item:hover { border-color: #cbd8c4; transform: translateY(-1px); }
.course-thumb { height: 68px; position: relative; overflow: hidden; border-radius: 9px; background: #dce7d4; }
.course-thumb::before, .course-thumb::after { content: ""; position: absolute; border-radius: 50%; }
.course-thumb::before { width: 75px; height: 75px; left: -18px; top: 22px; background: rgba(255,255,255,.55); }
.course-thumb::after { width: 55px; height: 55px; right: -9px; top: -20px; background: #8fc051; }
.course-thumb.blue { background: #dce7ee; }
.course-thumb.blue::after { background: #6488a5; }
.course-thumb.sand { background: #eee6d7; }
.course-thumb.sand::after { background: #d4aa68; }
.course-copy { min-width: 0; }
.course-copy h3 { margin: 7px 0 8px; font-size: .95rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.course-copy .progress-line { display: flex; align-items: center; gap: 10px; }
.course-copy .progress { width: min(230px, 70%); height: 6px; }
.course-copy .progress-line span { color: #7b867f; font-size: .73rem; }
.course-item .button { min-height: 35px; padding: 0 13px; }
.deadline-list { display: grid; gap: 14px; }
.deadline-item { display: flex; gap: 13px; align-items: flex-start; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.deadline-item:last-child { padding-bottom: 0; border-bottom: 0; }
.date-box { width: 46px; height: 48px; flex: 0 0 auto; display: grid; place-content: center; text-align: center; border-radius: 9px; background: #f1f5ed; color: var(--brand-dark); }
.date-box b { font-size: 1rem; line-height: 1; }
.date-box span { margin-top: 4px; font-size: .65rem; }
.deadline-copy h3 { margin: 1px 0 4px; font-size: .88rem; }
.deadline-copy p { margin: 0; color: var(--muted); font-size: .76rem; }
.stats-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 22px; }
.stat-card { padding: 18px 20px; }
.stat-card span { display: block; margin-bottom: 7px; color: var(--muted); font-size: .76rem; }
.stat-card strong { font-size: 1.45rem; letter-spacing: -.03em; }
.stat-card small { margin-left: 6px; color: #8a938d; }

/* Course page */
.breadcrumb { margin-bottom: 18px; color: #7b857e; font-size: .82rem; }
.breadcrumb a:hover { color: var(--brand-dark); }
.course-layout { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 22px; }
.player-card { overflow: hidden; background: #17211b; border-radius: var(--radius); box-shadow: var(--shadow); }
.player-stage { min-height: 485px; position: relative; display: grid; place-items: center; background: radial-gradient(circle at 68% 24%, #35473a 0, #202e25 35%, #152019 72%); color: #fff; }
.player-watermark { position: absolute; right: 24px; top: 22px; color: rgba(255,255,255,.28); font-size: .74rem; letter-spacing: .05em; }
.play-button { width: 74px; height: 74px; display: grid; place-items: center; border-radius: 50%; color: #fff; background: var(--brand); box-shadow: 0 10px 28px rgba(0,0,0,.25); }
.play-button svg { width: 28px; margin-left: 4px; }
.player-caption { position: absolute; left: 25px; bottom: 23px; }
.player-caption strong { display: block; margin-bottom: 5px; font-size: 1rem; }
.player-caption span { color: #bdc5bf; font-size: .8rem; }
.player-controls { height: 52px; display: flex; align-items: center; gap: 15px; padding: 0 18px; background: #101713; color: #e0e4e1; font-size: .78rem; }
.player-controls .progress { flex: 1; background: #3a433d; height: 4px; }
.outline-card { overflow: hidden; }
.outline-head { padding: 21px 21px 17px; border-bottom: 1px solid var(--line); }
.outline-head h2 { margin-bottom: 5px; font-size: 1.05rem; }
.outline-head p { margin: 0; color: var(--muted); font-size: .77rem; }
.chapter { border-bottom: 1px solid var(--line); }
.chapter:last-child { border-bottom: 0; }
.chapter-title { display: flex; align-items: center; justify-content: space-between; padding: 15px 18px 9px; font-size: .82rem; font-weight: 700; }
.lesson-list { padding: 0 9px 12px; }
.lesson { display: grid; grid-template-columns: 26px 1fr auto; align-items: center; gap: 8px; padding: 10px; border-radius: 8px; color: #4f5a53; font-size: .79rem; }
.lesson:hover { background: #f6f8f5; }
.lesson.active { color: var(--brand-dark); background: var(--brand-soft); font-weight: 650; }
.lesson-icon { width: 23px; height: 23px; display: grid; place-items: center; border-radius: 50%; background: #eff2ee; color: #7d8780; font-size: .65rem; }
.lesson.active .lesson-icon { background: var(--brand); color: #fff; }
.lesson small { color: #98a099; }
.course-info { margin-top: 22px; padding: 25px 28px; }
.course-info-top { display: flex; justify-content: space-between; gap: 24px; }
.course-info h1 { margin-bottom: 10px; font-size: 1.5rem; }
.course-info p { max-width: 750px; color: var(--muted); font-size: .88rem; }
.course-facts { display: flex; flex-wrap: wrap; gap: 24px; padding-top: 18px; margin-top: 18px; border-top: 1px solid var(--line); }
.fact span { display: block; color: #8a938d; font-size: .72rem; }
.fact b { display: block; margin-top: 3px; font-size: .85rem; }

/* Daily page */
.daily-layout { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 22px; }
.daily-main { display: grid; gap: 20px; }
.daily-banner { position: relative; overflow: hidden; display: grid; grid-template-columns: 1fr auto; align-items: center; padding: 28px 30px; background: #fff; }
.daily-banner::after { content: "05"; position: absolute; right: 172px; top: -40px; color: #f1f5ed; font-size: 9rem; line-height: 1; font-weight: 800; letter-spacing: -.08em; }
.daily-banner-copy { position: relative; z-index: 1; }
.daily-banner h1 { margin-bottom: 8px; font-size: 1.55rem; }
.daily-banner p { margin: 0; color: var(--muted); font-size: .86rem; }
.task-badge { position: relative; z-index: 1; min-width: 120px; padding: 15px 18px; border-radius: 12px; background: var(--brand-soft); text-align: center; }
.task-badge strong { display: block; color: var(--brand-dark); font-size: 1.4rem; }
.task-badge span { color: #697565; font-size: .75rem; }
.step-tabs { display: flex; gap: 6px; padding: 6px; background: #e9eee6; border-radius: 11px; }
.step-tabs button { flex: 1; min-height: 42px; border-radius: 8px; background: transparent; color: #657068; font-size: .87rem; font-weight: 600; }
.step-tabs button.active { background: #fff; color: var(--ink); box-shadow: 0 3px 11px rgba(25,38,29,.07); }
.knowledge-panel { padding: 22px; }
.knowledge-list { display: grid; gap: 11px; }
.knowledge-item { display: grid; grid-template-columns: 42px minmax(0, 1fr) auto; align-items: center; gap: 14px; padding: 16px; border: 1px solid var(--line); border-radius: 11px; background: #fff; }
.knowledge-item.current { border-color: #a8c985; box-shadow: 0 0 0 3px rgba(127,183,58,.08); }
.knowledge-number { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 10px; background: #f1f5ed; color: var(--brand-dark); font-weight: 750; }
.knowledge-item.done .knowledge-number { background: var(--brand); color: #fff; }
.knowledge-copy h3 { margin: 0 0 4px; font-size: .93rem; }
.knowledge-copy p { margin: 0; color: var(--muted); font-size: .76rem; }
.knowledge-state { color: #879189; font-size: .77rem; }
.knowledge-item.current .knowledge-state { color: var(--brand-dark); font-weight: 650; }
.quiz-panel { display: none; padding: 24px; }
.quiz-panel.visible { display: block; }
.question-meta { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.question-meta b { font-size: .86rem; }
.question-meta span { color: var(--muted); font-size: .78rem; }
.question-title { margin-bottom: 18px; font-size: 1rem; font-weight: 650; }
.options { display: grid; gap: 10px; }
.option { display: flex; align-items: center; gap: 12px; padding: 13px 14px; border: 1px solid var(--line); border-radius: 9px; background: #fff; text-align: left; color: #445048; }
.option:hover, .option.selected { border-color: #9bc56b; background: #f5f9f0; }
.option-letter { width: 26px; height: 26px; display: grid; place-items: center; border-radius: 50%; background: #eff2ee; font-size: .75rem; font-weight: 700; }
.daily-side { display: grid; align-content: start; gap: 18px; }
.streak-card { padding: 23px; background: #233028; color: #fff; border: 0; }
.streak-card .subtle { color: #aeb8b1; }
.streak-number { margin: 14px 0 4px; font-size: 2.3rem; letter-spacing: -.05em; }
.streak-number small { margin-left: 5px; color: #bdc6c0; font-size: .85rem; font-weight: 500; }
.week-dots { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; margin-top: 20px; }
.day-dot { text-align: center; color: #aeb8b1; font-size: .65rem; }
.day-dot i { width: 28px; height: 28px; margin: 7px auto 0; display: grid; place-items: center; border-radius: 50%; background: #3b4940; color: #fff; font-style: normal; font-size: .7rem; }
.day-dot.done i { background: var(--brand); }
.day-dot.today i { outline: 2px solid #a8d472; outline-offset: 2px; }
.scope-card { padding: 21px; }
.scope-card h2 { margin-bottom: 15px; font-size: 1rem; }
.scope-row { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; padding: 12px 0; border-bottom: 1px solid var(--line); font-size: .8rem; }
.scope-row:last-child { border-bottom: 0; padding-bottom: 0; }
.scope-row span { color: var(--muted); }
.scope-row b { text-align: right; }

.toast { position: fixed; left: 50%; bottom: 28px; z-index: 60; transform: translate(-50%, 20px); opacity: 0; padding: 11px 17px; border-radius: 8px; background: #202b24; color: #fff; font-size: .82rem; box-shadow: 0 8px 25px rgba(0,0,0,.18); transition: .22s ease; pointer-events: none; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* Shared listing and workspace patterns */
.toolbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 20px; }
.search-box { width: min(360px, 100%); display: flex; align-items: center; gap: 9px; padding: 0 13px; height: 42px; border: 1px solid var(--line); border-radius: 9px; background: #fff; }
.search-box svg { width: 18px; color: #8d9690; }
.search-box input { width: 100%; border: 0; outline: 0; background: transparent; color: var(--ink); }
.filters { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.filter-chip { min-height: 36px; padding: 0 13px; border-radius: 8px; background: #fff; border: 1px solid var(--line); color: #68726b; font-size: .8rem; }
.filter-chip.active { background: var(--brand-soft); color: var(--brand-dark); border-color: #cfe1bb; font-weight: 650; }
.catalog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.catalog-card { overflow: hidden; transition: transform .2s, box-shadow .2s; }
.catalog-card:hover { transform: translateY(-3px); box-shadow: 0 14px 34px rgba(23,33,27,.1); }
.catalog-cover { height: 150px; position: relative; overflow: hidden; padding: 18px; background: #dfead7; }
.catalog-cover.blue { background: #dce8ee; }
.catalog-cover.sand { background: #eee6d7; }
.catalog-cover.dark { background: #26342b; color: #fff; }
.catalog-cover::before, .catalog-cover::after { content: ""; position: absolute; border-radius: 50%; }
.catalog-cover::before { width: 145px; height: 145px; right: -35px; top: -48px; border: 25px solid rgba(127,183,58,.35); }
.catalog-cover::after { width: 75px; height: 75px; left: -22px; bottom: -27px; background: rgba(255,255,255,.48); }
.catalog-cover b { position: absolute; left: 18px; bottom: 18px; z-index: 1; max-width: 78%; font-size: 1.05rem; line-height: 1.45; }
.catalog-body { padding: 17px 18px 18px; }
.catalog-meta { display: flex; align-items: center; justify-content: space-between; margin-bottom: 13px; color: var(--muted); font-size: .74rem; }
.catalog-body h3 { margin-bottom: 8px; font-size: 1rem; }
.catalog-body p { min-height: 40px; margin-bottom: 16px; color: var(--muted); font-size: .8rem; }
.catalog-actions { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.catalog-actions .progress { flex: 1; }
.catalog-actions small { color: #7d8780; white-space: nowrap; }
.tabs-line { display: flex; gap: 24px; border-bottom: 1px solid var(--line); margin-bottom: 22px; }
.tabs-line a, .tabs-line button { position: relative; padding: 0 2px 13px; background: none; color: #748078; font-size: .88rem; }
.tabs-line .active { color: var(--ink); font-weight: 650; }
.tabs-line .active::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 3px; border-radius: 3px 3px 0 0; background: var(--brand); }
.empty-note { padding: 42px; text-align: center; color: var(--muted); }
.list-card { overflow: hidden; }
.table-wrap { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: .82rem; }
.data-table th { padding: 13px 15px; background: #f7f9f6; color: #6a756d; text-align: left; font-weight: 600; white-space: nowrap; }
.data-table td { padding: 15px; border-top: 1px solid var(--line); vertical-align: middle; }
.data-table tr:hover td { background: #fafbf9; }
.data-table .title-cell { font-weight: 650; color: #2a352e; }
.row-actions { display: flex; gap: 12px; white-space: nowrap; }
.row-actions a, .row-actions button { background: none; color: var(--brand-dark); font-size: .78rem; }
.metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 20px; }
.metric-card { padding: 19px 20px; }
.metric-label { display: flex; justify-content: space-between; color: var(--muted); font-size: .78rem; }
.metric-value { display: block; margin: 12px 0 5px; font-size: 1.8rem; letter-spacing: -.04em; }
.metric-note { color: #8c958f; font-size: .72rem; }
.metric-trend { color: var(--brand-dark); font-weight: 650; }
.split-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(300px, .7fr); gap: 20px; }
.panel-pad { padding: 21px; }
.chart-bars { height: 230px; display: flex; align-items: flex-end; gap: 13px; padding: 18px 8px 0; border-bottom: 1px solid var(--line); }
.bar-item { flex: 1; display: grid; place-items: end center; height: 100%; }
.bar { width: min(36px, 65%); min-height: 8px; border-radius: 5px 5px 0 0; background: #a8cb7c; }
.bar-item:nth-child(3n) .bar { background: var(--brand); }
.bar-item span { margin-top: 8px; color: #7f8982; font-size: .7rem; }
.activity-list { display: grid; gap: 15px; }
.activity { display: grid; grid-template-columns: 32px 1fr; gap: 11px; }
.activity-dot { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 8px; background: var(--brand-soft); color: var(--brand-dark); font-weight: 700; font-size: .72rem; }
.activity p { margin: 0; font-size: .8rem; }
.activity small { color: #8b958e; font-size: .7rem; }

/* Exam and certificates */
.exam-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.exam-card { padding: 22px; }
.exam-card-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; }
.exam-card h3 { margin: 10px 0 7px; font-size: 1.02rem; }
.exam-card p { color: var(--muted); font-size: .8rem; }
.exam-facts { display: flex; gap: 20px; margin: 18px 0; padding: 14px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.exam-facts span { color: #89928c; font-size: .72rem; }
.exam-facts b { display: block; margin-top: 3px; color: #39443d; font-size: .84rem; }
.exam-bottom { display: flex; align-items: center; justify-content: space-between; }
.score-badge { font-size: 1.45rem; font-weight: 750; color: var(--brand-dark); }
.cert-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.certificate-card { display: grid; grid-template-columns: 190px 1fr; overflow: hidden; }
.certificate-preview { min-height: 185px; position: relative; display: grid; place-items: center; padding: 22px; background: #f1f5eb; border-right: 1px solid var(--line); text-align: center; }
.certificate-preview::before { content: ""; position: absolute; inset: 12px; border: 1px solid #b7d392; }
.certificate-preview strong { position: relative; font-size: .92rem; }
.certificate-preview small { position: relative; display: block; margin-top: 10px; color: #798276; }
.certificate-info { padding: 22px; }
.certificate-info h3 { margin: 10px 0 7px; font-size: 1rem; }
.certificate-info p { margin-bottom: 17px; color: var(--muted); font-size: .78rem; }

/* Focused exam and certificate verification */
.focus-header { height: 68px; display: flex; align-items: center; padding: 0 max(28px, calc((100vw - 1380px) / 2)); background: #fff; border-bottom: 1px solid var(--line); }
.focus-header .brand { min-width: 0; }
.focus-meta { margin-left: auto; display: flex; align-items: center; gap: 22px; color: #5f6a63; font-size: .8rem; }
.focus-meta strong { color: var(--ink); font-size: 1rem; }
.exam-workspace { width: min(1380px, calc(100% - 56px)); margin: 24px auto 42px; display: grid; grid-template-columns: minmax(0,1fr) 292px; gap: 20px; }
.question-card { min-height: 620px; padding: 30px 34px; }
.question-kicker { display: flex; align-items: center; justify-content: space-between; padding-bottom: 19px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: .78rem; }
.question-kicker b { color: var(--brand-dark); }
.question-body { max-width: 860px; padding: 34px 0; }
.question-body h1 { font-size: 1.14rem; line-height: 1.8; letter-spacing: 0; }
.question-body .options { margin-top: 25px; }
.question-body .option { padding: 17px 18px; }
.exam-nav-actions { display: flex; justify-content: space-between; margin-top: 38px; padding-top: 22px; border-top: 1px solid var(--line); }
.answer-sheet { padding: 22px; align-self: start; position: sticky; top: 20px; }
.answer-sheet h2 { margin-bottom: 5px; font-size: 1rem; }
.answer-sheet p { color: var(--muted); font-size: .74rem; }
.question-palette { display: grid; grid-template-columns: repeat(5,1fr); gap: 8px; margin: 20px 0 22px; }
.question-palette button { aspect-ratio: 1; border: 1px solid var(--line); border-radius: 7px; background: #f8faf7; color: #647068; font-size: .76rem; }
.question-palette button.answered { border-color: #b5d491; background: var(--brand-soft); color: var(--brand-dark); }
.question-palette button.current { border-color: var(--brand); background: var(--brand); color: #fff; }
.palette-legend { display: flex; gap: 14px; color: #7f8982; font-size: .7rem; }
.palette-legend i { width: 8px; height: 8px; display: inline-block; margin-right: 5px; border-radius: 2px; background: #eef1ed; }
.palette-legend .done i { background: #cfe4b7; }
.submit-exam { width: 100%; margin-top: 22px; }
.verify-page { min-height: calc(100vh - 68px); display: grid; place-items: center; padding: 48px 24px; background: radial-gradient(circle at 50% 0, #f4f8ef, #eef1ed 62%); }
.verify-card { width: min(780px,100%); overflow: hidden; }
.verify-certificate { position: relative; padding: 58px 72px; background: #fff; text-align: center; }
.verify-certificate::before { content: ""; position: absolute; inset: 18px; border: 1px solid #b9d594; box-shadow: inset 0 0 0 6px #f5f8f1; }
.verify-mark { width: 58px; height: 58px; position: relative; display: grid; place-items: center; margin: 0 auto 20px; border-radius: 50%; background: var(--brand); color: #fff; font-size: 1.55rem; }
.verify-certificate h1 { position: relative; margin-bottom: 12px; font-size: 1.65rem; }
.verify-certificate .recipient { position: relative; margin: 26px 0 8px; font-size: 1.25rem; font-weight: 750; }
.verify-certificate p { position: relative; color: var(--muted); font-size: .84rem; }
.verify-details { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; background: var(--line); border-top: 1px solid var(--line); }
.verify-detail { padding: 18px; background: #fafbf9; text-align: center; }
.verify-detail span { display: block; color: #879188; font-size: .7rem; }
.verify-detail b { display: block; margin-top: 5px; font-size: .8rem; }

/* Admin shell */
.admin-body { background: #f3f5f2; }
.admin-shell { min-height: 100vh; display: grid; grid-template-columns: 238px minmax(0, 1fr); }
.admin-sidebar { position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; padding: 22px 16px; background: #202b24; color: #dfe5e0; }
.admin-brand { display: flex; align-items: center; gap: 11px; padding: 0 8px 20px; margin-bottom: 12px; border-bottom: 1px solid rgba(255,255,255,.09); }
.admin-brand img { width: 56px; height: 35px; object-fit: contain; padding: 3px; border-radius: 5px; background: #fff; }
.admin-brand strong { display: block; font-size: .92rem; }
.admin-brand span { display: block; margin-top: 2px; color: #96a199; font-size: .68rem; }
.admin-nav { display: grid; gap: 4px; }
.admin-nav-label { padding: 17px 11px 6px; color: #758279; font-size: .65rem; letter-spacing: .12em; }
.admin-nav a { display: flex; align-items: center; gap: 10px; padding: 10px 11px; border-radius: 8px; color: #bbc4bd; font-size: .82rem; }
.admin-nav a:hover { background: rgba(255,255,255,.055); color: #fff; }
.admin-nav a.active { background: var(--brand); color: #fff; font-weight: 650; }
.nav-glyph { width: 19px; text-align: center; opacity: .9; }
.admin-side-bottom { margin-top: auto; padding-top: 16px; border-top: 1px solid rgba(255,255,255,.09); }
.admin-side-bottom a { display: block; padding: 9px 11px; color: #aeb8b1; font-size: .78rem; }
.admin-main { min-width: 0; }
.admin-topbar { height: 66px; display: flex; align-items: center; padding: 0 28px; background: #fff; border-bottom: 1px solid var(--line); }
.admin-topbar h1 { margin: 0; font-size: 1rem; letter-spacing: 0; }
.admin-topbar .header-tools { margin-left: auto; }
.admin-content { padding: 26px 28px 44px; }
.admin-page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 22px; }
.admin-page-head h1 { margin-bottom: 5px; font-size: 1.55rem; }
.admin-page-head p { margin: 0; color: var(--muted); font-size: .82rem; }
.status-dot { display: inline-block; width: 7px; height: 7px; margin-right: 6px; border-radius: 50%; background: var(--brand); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-section { padding: 23px; }
.form-section.full { grid-column: 1 / -1; }
.form-section h2 { margin-bottom: 18px; font-size: 1.02rem; }
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: grid; gap: 7px; }
.field.full { grid-column: 1 / -1; }
.field label { color: #57635b; font-size: .77rem; font-weight: 650; }
.input, .select, .textarea { width: 100%; border: 1px solid #dfe4dd; border-radius: 8px; background: #fff; color: var(--ink); outline: 0; }
.input, .select { height: 40px; padding: 0 12px; }
.textarea { min-height: 86px; padding: 11px 12px; resize: vertical; }
.input:focus, .select:focus, .textarea:focus { border-color: #9bc66b; box-shadow: 0 0 0 3px rgba(127,183,58,.08); }
.scope-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.scope-pill { padding: 8px 11px; border-radius: 7px; background: var(--brand-soft); color: var(--brand-dark); font-size: .76rem; }
.builder-list { display: grid; gap: 11px; }
.builder-row { display: grid; grid-template-columns: 28px minmax(0,1fr) auto; align-items: center; gap: 12px; padding: 13px; border: 1px solid var(--line); border-radius: 9px; }
.drag-handle { color: #a0a8a2; font-size: .9rem; }
.builder-row h3 { margin: 0 0 3px; font-size: .86rem; }
.builder-row p { margin: 0; color: var(--muted); font-size: .72rem; }
.distribution { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.donut-row { display: flex; align-items: center; gap: 22px; padding: 16px; }
.donut { width: 110px; height: 110px; position: relative; flex: 0 0 auto; border-radius: 50%; background: conic-gradient(var(--brand) 0 64%, #d8e7c8 64% 82%, #edf0ec 82%); }
.donut::before { content: ""; position: absolute; inset: 18px; border-radius: 50%; background: #fff; }
.donut::after { content: "82%"; position: absolute; inset: 0; display: grid; place-items: center; font-weight: 750; }
.legend { display: grid; gap: 8px; font-size: .75rem; color: var(--muted); }
.legend i { display: inline-block; width: 8px; height: 8px; margin-right: 7px; border-radius: 2px; background: var(--brand); }

@media (max-width: 1200px) {
  .top-nav a { padding: 0 9px; }
  .admin-entry { display: none; }
  .catalog-grid { grid-template-columns: repeat(2, 1fr); }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .admin-shell { grid-template-columns: 72px minmax(0,1fr); }
  .admin-sidebar { padding: 18px 10px; }
  .admin-brand span, .admin-brand strong, .admin-nav-label, .admin-nav a span:not(.nav-glyph), .admin-side-bottom { display: none; }
  .admin-brand { justify-content: center; padding-inline: 0; }
  .admin-brand img { width: 48px; }
  .admin-nav a { justify-content: center; }
  .form-grid, .split-grid { grid-template-columns: 1fr; }
  .exam-workspace { grid-template-columns: 1fr; }
  .answer-sheet { position: static; }
}

@media (max-width: 1050px) {
  .brand { min-width: 205px; }
  .top-nav a { padding: 0 10px; }
  .user-meta { display: none; }
  .dashboard-grid, .content-row, .course-layout, .daily-layout { grid-template-columns: 1fr; }
  .course-layout .outline-card { order: 2; }
  .player-stage { min-height: 420px; }
  .daily-side { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .app-header { height: auto; min-height: 64px; padding: 10px 18px; gap: 12px; flex-wrap: wrap; }
  .brand { min-width: 0; }
  .brand img { width: 58px; height: 34px; }
  .brand-copy span { display: none; }
  .top-nav { order: 3; width: 100%; overflow-x: auto; }
  .top-nav a { min-height: 42px; white-space: nowrap; }
  .header-tools { gap: 7px; margin-right: 0; }
  .user-chip { padding-left: 8px; }
  .page { width: min(100% - 30px, 680px); padding-top: 22px; }
  .page-title-row { align-items: flex-start; flex-direction: column; gap: 9px; }
  .hero-card { padding: 25px 22px; }
  .course-item { grid-template-columns: 72px 1fr; }
  .course-item .button { grid-column: 2; justify-self: start; }
  .stats-strip { grid-template-columns: 1fr 1fr; }
  .player-stage { min-height: 320px; }
  .course-info-top, .daily-banner { grid-template-columns: 1fr; }
  .course-info-top { display: block; }
  .course-info-top .button { margin-top: 10px; }
  .task-badge { margin-top: 18px; justify-self: start; }
  .daily-banner::after { right: -5px; }
  .daily-side { grid-template-columns: 1fr; }
  .knowledge-item { grid-template-columns: 38px 1fr; }
  .knowledge-state { grid-column: 2; }
  .catalog-grid, .exam-grid, .cert-grid, .metrics-grid { grid-template-columns: 1fr; }
  .certificate-card { grid-template-columns: 1fr; }
  .certificate-preview { border-right: 0; border-bottom: 1px solid var(--line); }
  .toolbar, .admin-page-head { align-items: stretch; flex-direction: column; }
  .admin-content { padding: 20px 16px 36px; }
  .field-grid, .distribution { grid-template-columns: 1fr; }
  .exam-workspace { width: min(100% - 30px,680px); margin-top: 16px; }
  .question-card { min-height: auto; padding: 22px 20px; }
  .focus-header { padding: 0 18px; }
  .focus-meta span { display: none; }
  .verify-certificate { padding: 48px 30px; }
  .verify-details { grid-template-columns: 1fr; }
}