:root {
  --bg: #faf9f6;
  --panel: #fff;
  --text: #292622;
  --muted: #6d675f;
  --border: #e5ded4;
  --earth: #8b4513;
  --earth-soft: #f5efe6;
  --violet: #6b3a6e;
  --violet-soft: #f7f0f7;
  --blue: #4a6fa5;
  --orange: #c0573a;
}

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

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Serif SC", "Source Han Serif SC", "STSong", Georgia, serif;
  line-height: 1.65;
}

.portal-hero {
  border-bottom: 1px solid var(--border);
  background: #f7f2ea;
}

.hero-inner,
.portal-shell {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
}

.hero-inner {
  padding: 30px 0 24px;
}

.eyebrow {
  margin-bottom: 3px;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
}

h1 {
  color: var(--text);
  font-size: 1.9rem;
  line-height: 1.2;
  letter-spacing: 0.08em;
}

.subtitle {
  margin-top: 7px;
  color: var(--muted);
  font-size: 0.92rem;
}

.portal-shell {
  padding: 18px 0 46px;
}

.course-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 18px;
}

.course-tab {
  display: grid;
  gap: 2px;
  min-height: 76px;
  align-content: center;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
  font-family: inherit;
  text-align: left;
  transition: background 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease;
}

.course-tab:hover {
  box-shadow: 0 8px 20px rgba(60, 44, 31, 0.07);
}

.course-tab.earth.active {
  border-color: var(--earth);
  background: var(--earth-soft);
}

.course-tab.violet.active {
  border-color: var(--violet);
  background: var(--violet-soft);
}

.tab-title {
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.35;
}

.course-tab.earth.active .tab-title { color: var(--earth); }
.course-tab.violet.active .tab-title { color: var(--violet); }

.tab-subtitle {
  color: var(--muted);
  font-size: 0.76rem;
}

.course-stage {
  min-width: 0;
}

.course-panel {
  margin-bottom: 24px;
}

.panel-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 10px;
}

.panel-kicker {
  color: var(--muted);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
}

.panel-head h2 {
  margin-top: 1px;
  font-size: 1.14rem;
  line-height: 1.35;
}

.course-panel.earth h2 { color: var(--earth); }
.course-panel.violet h2 { color: var(--violet); }

.panel-note {
  color: var(--muted);
  font-size: 0.78rem;
  text-align: right;
}

.course-groups {
  display: grid;
  gap: 12px;
}

.course-panel.earth .course-groups {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.content-group {
  min-width: 0;
}

.content-group-title {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
}

.content-group-title::after {
  content: "";
  height: 1px;
  flex: 1;
  background: var(--border);
}

.content-group-title small {
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0;
}

.hex-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
}

.hex-item {
  min-height: 62px;
  display: grid;
  align-content: center;
  gap: 1px;
  padding: 8px 6px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--panel);
  color: var(--text);
  text-align: center;
  text-decoration: none;
  transition: transform 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}

.hex-item:hover {
  transform: translateY(-1px);
  border-color: var(--earth);
  background: var(--earth-soft);
}

.hex-item.pending {
  opacity: 0.42;
  cursor: default;
}

.hex-item.pending:hover {
  transform: none;
  border-color: var(--border);
  background: var(--panel);
}

.hex-order {
  color: var(--muted);
  font-size: 0.66rem;
  line-height: 1.2;
}

.hex-name {
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.25;
}

.hex-full {
  color: var(--muted);
  font-size: 0.68rem;
  line-height: 1.25;
}

.lesson-list {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--panel);
}

.lesson-row {
  display: grid;
  grid-template-columns: 64px minmax(150px, 1fr) minmax(180px, auto) 58px;
  gap: 10px;
  align-items: center;
  min-height: 46px;
  padding: 8px 12px;
  border-left: 3px solid var(--violet);
  border-bottom: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
  transition: background 0.16s ease;
}

.lesson-row:last-child { border-bottom: none; }
.lesson-row.theory { border-left-color: var(--blue); }
.lesson-row.practice { border-left-color: var(--orange); }
.lesson-row.mixed { border-left-color: #8a7a4a; }
.lesson-row:hover { background: var(--violet-soft); }

.lesson-order,
.lesson-duration {
  color: var(--muted);
  font-size: 0.74rem;
  white-space: nowrap;
}

.lesson-title {
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.35;
}

.lesson-tags {
  display: flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 4px;
}

.tag {
  padding: 1px 6px;
  border-radius: 4px;
  background: #f3efe8;
  color: var(--muted);
  font-size: 0.66rem;
  line-height: 1.5;
  white-space: nowrap;
}

.empty {
  padding: 20px;
  border: 1px dashed var(--border);
  border-radius: 8px;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 900px) {
  .course-panel.earth .course-groups { grid-template-columns: 1fr; }
  .hex-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .panel-head { align-items: start; flex-direction: column; gap: 4px; }
  .panel-note { text-align: left; }
  .lesson-row {
    grid-template-columns: 58px minmax(0, 1fr) 52px;
  }
  .lesson-tags { display: none; }
}

@media (max-width: 560px) {
  .hero-inner,
  .portal-shell { width: min(100% - 28px, 1080px); }
  h1 { font-size: 1.52rem; }
  .course-tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .course-tab { min-height: 64px; padding: 10px 9px; }
  .tab-title { font-size: 0.9rem; line-height: 1.3; }
  .tab-subtitle { font-size: 0.68rem; }
  .hex-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lesson-row { grid-template-columns: 54px minmax(0, 1fr); }
  .lesson-duration { display: none; }
}