:root {
  --paper: #faf9f4;
  --surface: #ffffff;
  --ink: #1e2529;
  --muted: #5c6670;
  --line: #d9ddd6;
  --green: #1f6b57;
  --blue: #285f8f;
  --gold: #a97b13;
  --red: #a74735;
  --shadow: 0 16px 40px rgba(29, 36, 40, 0.08);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: linear-gradient(90deg, rgba(31,107,87,.045) 1px, transparent 1px), linear-gradient(0deg, rgba(40,95,143,.04) 1px, transparent 1px), var(--paper);
  background-size: 30px 30px;
  color: var(--ink);
  line-height: 1.72;
}
a { color: inherit; text-decoration: none; }
.top-nav {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 28px;
  border-bottom: 1px solid var(--line);
  background: rgba(250,249,244,.94);
  backdrop-filter: blur(10px);
}
.brand { font-weight: 900; }
.top-nav nav { display: flex; gap: 10px; flex-wrap: wrap; }
.top-nav nav a, .button {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 7px 12px;
  background: var(--surface);
  font-weight: 800;
}
.button.primary { background: var(--green); color: #fff; border-color: var(--green); }
.page { width: min(1120px, calc(100% - 32px)); margin: 0 auto; padding: 28px 0 70px; }
.hero, .day-hero { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(320px, .9fr); gap: 22px; align-items: stretch; }
.hero h1, .day-hero h1 { margin: 0; font-size: clamp(34px, 5vw, 58px); line-height: 1.12; letter-spacing: 0; }
.hero p, .day-hero p { color: #3f4b52; font-size: 18px; }
.eyebrow { display: inline-flex; width: fit-content; border: 1px solid var(--line); border-radius: 999px; padding: 4px 10px; background: #fff; color: var(--green); font-weight: 900; }
.panel, .day-card, .stage-card, .day-link {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.day-card, .stage-card, .day-link { padding: 16px; }
.compact { box-shadow: none; }
.panel { margin-top: 22px; padding: 20px; }
.panel h2, .panel h3, .stage-card h3 { margin: 0 0 10px; line-height: 1.2; }
.content-grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(280px, .75fr); gap: 18px; align-items: start; }
.stage-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-top: 16px; }
.day-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; margin-top: 16px; }
.day-link { display: grid; gap: 8px; min-height: 148px; }
.day-link:hover { border-color: var(--green); transform: translateY(-1px); }
.day-num { color: var(--green); font-weight: 900; font-size: 22px; }
.tag { display: inline-flex; width: fit-content; border-radius: 999px; padding: 3px 9px; background: #e7f0ea; color: #174c3f; font-size: 13px; font-weight: 800; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 8px; }
table { width: 100%; border-collapse: collapse; min-width: 720px; }
th, td { padding: 11px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: #eef3ee; }
tr:last-child td { border-bottom: 0; }
.en { font-family: Georgia, "Times New Roman", serif; font-size: 17px; }
.note { border-left: 4px solid var(--green); border-radius: 0 8px 8px 0; background: #edf4ef; padding: 12px; margin-top: 12px; }
.reading-grid { display: grid; gap: 14px; }
.reading-card { border: 1px solid var(--line); border-radius: 8px; padding: 14px; background: #fbfcfa; }
details { margin-top: 10px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
summary { cursor: pointer; padding: 9px 11px; font-weight: 900; }
details p { padding: 0 11px 11px; margin: 0; }
.steps, .practice-list { padding-left: 22px; }
.checklist { display: grid; gap: 9px; }
.checklist label { display: flex; gap: 10px; align-items: flex-start; border: 1px solid var(--line); border-radius: 8px; padding: 9px 10px; background: #fbfcfa; }
.checklist input { width: 18px; height: 18px; margin-top: 4px; accent-color: var(--green); }
.review-box { width: 100%; min-height: 120px; margin-top: 14px; border: 1px solid var(--line); border-radius: 8px; padding: 10px; font: inherit; }
.bottom-nav { display: flex; justify-content: space-between; gap: 12px; margin-top: 24px; }
.visual-map { width: 100%; display: block; }
@media (max-width: 900px) {
  .hero, .day-hero, .content-grid { grid-template-columns: 1fr; }
  .stage-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .day-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .top-nav { align-items: flex-start; flex-direction: column; padding: 12px 16px; }
  .page { width: min(100% - 24px, 1120px); }
  .hero h1, .day-hero h1 { font-size: 34px; }
  .stage-grid, .day-grid { grid-template-columns: 1fr; }
}
@media print {
  .top-nav, .bottom-nav { display: none; }
  body { background: #fff; }
  .page { width: 100%; padding: 0; }
  .panel, .day-card, .stage-card, .day-link { box-shadow: none; }
}

.lesson-box, .warning-box {
  border-radius: 8px;
  padding: 12px 14px;
  margin-top: 12px;
}
.lesson-box {
  border: 1px solid #c9d9d0;
  background: #edf4ef;
}
.warning-box {
  border: 1px solid #e6c8c0;
  background: #faeeeb;
}
.warning-box strong { color: var(--red); }
.panel > p { color: #3f4b52; }
.practice-list span { color: var(--muted); }
.source-list { display: grid; gap: 10px; padding-left: 20px; }
.source-list a { color: var(--blue); font-weight: 800; }