:root {
  --bg: #0b1020;
  --bg-alt: #121933;
  --panel: rgba(18, 25, 51, 0.78);
  --panel-strong: rgba(27, 38, 79, 0.95);
  --text: #eef2ff;
  --muted: #b7c0e0;
  --accent: #7dd3fc;
  --accent-2: #a78bfa;
  --border: rgba(125, 211, 252, 0.18);
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at top, rgba(125, 211, 252, 0.16), transparent 32%),
    linear-gradient(180deg, #0a0f1f 0%, #10172f 44%, #0b1020 100%);
  color: var(--text);
  line-height: 1.65;
}

.container {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  padding: 72px 0 44px;
  border-bottom: 1px solid var(--border);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.78rem;
  font-weight: 700;
}

h1 {
  margin: 0;
  font-size: clamp(2.2rem, 5vw, 4.4rem);
  line-height: 1.08;
}

.subtitle {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.top-nav {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.top-nav a,
.badge {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  text-decoration: none;
  backdrop-filter: blur(10px);
}

.top-nav a:hover {
  border-color: rgba(167, 139, 250, 0.5);
  transform: translateY(-1px);
}

.section {
  padding: 42px 0;
}

.section-alt {
  background: rgba(255, 255, 255, 0.02);
}

.section-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.section-title-row h2 {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
}

.overview-grid,
.day-grid,
.routine-grid,
.core-list-grid,
.deep-dive-grid {
  display: grid;
  gap: 18px;
}

.overview-grid {
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.mini-card,
.day-card,
.routine-card,
.core-list-grid ul {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 22px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.mini-card {
  padding: 18px;
}

.mini-card span,
.day-label,
.muted,
.footer-note {
  color: var(--muted);
}

.mini-card strong {
  display: block;
  margin-top: 8px;
  font-size: 1rem;
}

.day-grid {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.day-card {
  padding: 22px;
}

.day-header {
  margin-bottom: 10px;
}

.day-header h3 {
  margin: 6px 0 0;
  font-size: 1.35rem;
}

.block {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.035);
}

.block h4,
.routine-card h3 {
  margin: 0 0 10px;
}

.block ul,
.block ol,
.routine-card ul,
.routine-card ol,
.core-list-grid ul {
  margin: 0;
  padding-left: 20px;
}

.review {
  margin-top: 18px;
  padding: 14px 16px;
  border-left: 3px solid var(--accent);
  border-radius: 12px;
  background: rgba(125, 211, 252, 0.08);
}

.routine-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.deep-dive-card {
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--border);
  border-radius: 26px;
  padding: 22px;
}

.deep-dive-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.deep-panel {
  padding: 20px;
  border-radius: 20px;
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.deep-panel h3 {
  margin: 0 0 12px;
}

.deep-panel p,
.deep-panel ul,
.deep-panel ol {
  margin-top: 0;
}

.code-panel pre {
  margin: 0;
  padding: 16px;
  overflow-x: auto;
  border-radius: 16px;
  background: #0a0f1f;
  border: 1px solid rgba(125, 211, 252, 0.15);
}

.code-panel code {
  font-family: "JetBrains Mono", "Fira Code", monospace;
  font-size: 0.92rem;
}

.code-note {
  margin-top: 12px;
  color: var(--muted);
}

.warning-panel {
  border-color: rgba(251, 191, 36, 0.28);
}

.highlight-panel {
  background: linear-gradient(180deg, rgba(125, 211, 252, 0.1), rgba(167, 139, 250, 0.12));
}

.routine-card {
  padding: 22px;
}

.routine-card.highlight {
  background: linear-gradient(180deg, rgba(125, 211, 252, 0.12), rgba(167, 139, 250, 0.12));
}

.core-list-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.core-list-grid ul {
  padding: 18px 18px 18px 36px;
}

.footer {
  padding: 26px 0 48px;
  text-align: center;
  color: var(--muted);
}

@media (max-width: 700px) {
  .hero {
    padding-top: 56px;
  }

  .section-title-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .top-nav {
    gap: 10px;
  }

  .top-nav a,
  .badge {
    width: fit-content;
  }
}