:root {
  --club-bg: #fff9f0;
  --club-bg-soft: #fffdf9;
  --club-surface: rgba(255, 255, 255, 0.85);
  --club-line: rgba(138, 90, 31, 0.1);
  --club-text: #4a3825;
  --club-text-soft: #856a4a;
  --club-title: #2a1f15;
  --club-accent: #f59122;
  --club-accent-deep: #e06c10;
  --club-accent-soft: #ffeed9;
  --club-navy: #1f2a3a;
  --club-shadow-soft: 0 10px 30px -10px rgba(163, 114, 52, 0.15);
  --club-shadow-glow: 0 20px 40px -10px rgba(245, 145, 34, 0.25);
  --md-primary-fg-color: #fff9f0;
  --md-primary-fg-color--light: #ffffff;
  --md-primary-bg-color: #2b1f14;
  --md-accent-fg-color: #f59122;
  --md-default-bg-color: #fff9f0;
  --md-default-fg-color: #4a3825;
  --md-default-fg-color--light: #856a4a;
  --md-code-fg-color: #323846;
  --md-code-bg-color: #fcf4ea;
  --md-typeset-a-color: #e06c10;
  --md-text-font-family: "Inter", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-15px); }
  100% { transform: translateY(0px); }
}

[data-md-color-scheme="default"] body {
  color: var(--club-text);
  background:
    radial-gradient(circle at 10% 0%, rgba(255, 201, 122, 0.25), transparent 40rem),
    radial-gradient(circle at 90% 20%, rgba(255, 230, 192, 0.4), transparent 35rem),
    linear-gradient(135deg, #fff9f0 0%, #fffdf9 50%, #fff7ec 100%);
  background-attachment: fixed;
}

.md-header {
  background: rgba(255, 249, 240, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--club-line);
  box-shadow: 0 4px 20px rgba(163, 114, 52, 0.05);
}

.md-header__title, .md-logo, .md-search__icon, .md-header__button, .md-tabs__link {
  color: var(--club-title);
}

.md-search__form {
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--club-line);
  backdrop-filter: blur(10px);
  border-radius: 999px;
  transition: all 0.3s ease;
}
.md-search__form:hover, .md-search__form:focus-within {
  background: rgba(255, 255, 255, 0.95);
  border-color: var(--club-accent);
  box-shadow: 0 0 0 3px rgba(245, 145, 34, 0.15);
}

.md-main__inner { margin-top: 1.5rem; }

.md-sidebar .md-nav {
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(12px);
  border: 1px solid var(--club-line);
  border-radius: 20px;
  box-shadow: var(--club-shadow-soft);
  padding: 0.8rem;
}

.md-nav__link {
  border-radius: 10px;
  transition: all 0.25s ease;
  margin: 0.1rem 0;
  padding: 0.4rem 0.6rem;
}
.md-nav__link:hover {
  color: var(--club-accent-deep);
  background: linear-gradient(90deg, rgba(245, 145, 34, 0.08) 0%, transparent 100%);
  transform: translateX(4px);
}
.md-nav__link--active {
  color: var(--club-accent-deep);
  font-weight: 700;
  background: rgba(245, 145, 34, 0.05);
}

.md-content__inner {
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 32px;
  box-shadow: var(--club-shadow-soft), inset 0 0 0 1px rgba(255,255,255,0.9);
  padding: 3rem;
  position: relative;
  z-index: 1;
}

.md-typeset { line-height: 1.8; }
.md-typeset h1, .md-typeset h2, .md-typeset h3 {
  color: var(--club-title);
  font-family: "Noto Serif SC", "Source Han Serif SC", serif;
  font-weight: 700;
}
.md-typeset h1 { font-size: 2.8rem; margin-bottom: 1.2rem; }
.md-typeset h2 { margin-top: 3.5rem; font-size: 1.8rem; position: relative; padding-bottom: 0.5rem; }
.md-typeset h2::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0;
  width: 40px; height: 4px;
  background: linear-gradient(90deg, var(--club-accent), transparent);
  border-radius: 2px;
}
.md-typeset code {
  background: var(--md-code-bg-color);
  border: 1px solid var(--club-line);
  border-radius: 6px;
  padding: 0.2em 0.4em;
}

.home-shell {
  position: relative;
  margin: -1.5rem; 
  padding: 1.5rem;
  overflow: hidden;
  border-radius: inherit;
}

.home-shell::before, .home-shell::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  z-index: -1;
  opacity: 0.6;
  animation: float 12s ease-in-out infinite alternate;
  pointer-events: none;
}
.home-shell::before {
  top: -5%; left: -5%;
  width: 350px; height: 350px;
  background: rgba(245, 145, 34, 0.2);
}
.home-shell::after {
  bottom: 20%; right: -5%;
  width: 450px; height: 450px;
  background: rgba(224, 108, 16, 0.15);
  animation-delay: -6s;
}

.hero {
  display: grid;
  gap: 2rem;
  padding: 1rem 0 3rem;
  animation: fadeInUp 0.8s ease-out;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.2rem;
  border: 1px solid rgba(245, 145, 34, 0.3);
  border-radius: 999px;
  background: rgba(255, 238, 217, 0.6);
  backdrop-filter: blur(8px);
  color: var(--club-accent-deep);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  box-shadow: 0 4px 12px rgba(245, 145, 34, 0.1);
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 2rem;
  align-items: stretch;
}

.hero__main, .hero__panel, .feature-card, .chapter-card {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 28px;
  box-shadow: var(--club-shadow-soft);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero__main {
  padding: 3rem;
  background: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.6) 100%);
}

.hero__title {
  margin: 0;
  font-size: clamp(2.5rem, 4vw, 3.8rem);
  line-height: 1.15;
  color: var(--club-title);
  font-family: "Noto Serif SC", serif;
}

.hero__title strong {
  background: linear-gradient(120deg, var(--club-accent), #ff6b00);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 900;
}

.hero__subtitle {
  max-width: 95%;
  margin: 1.5rem 0 0;
  color: var(--club-text-soft);
  font-size: 1.15rem;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  margin-top: 2.5rem;
}

.hero__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 3.4rem;
  padding: 0 2.2rem;
  border-radius: 999px;
  font-size: 1.05rem;
  font-weight: 700;
  text-decoration: none !important;
  transition: all 0.3s ease;
}

.hero__button--primary {
  color: #fff !important;
  background: linear-gradient(135deg, var(--club-accent), #ff6b00);
  box-shadow: 0 10px 24px rgba(245, 145, 34, 0.35);
  position: relative;
  overflow: hidden;
}
.hero__button--primary::after {
  content: '';
  position: absolute;
  top: 0; left: -100%; width: 50%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  transition: all 0.5s ease;
}
.hero__button--primary:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 32px rgba(245, 145, 34, 0.5);
}
.hero__button--primary:hover::after { left: 150%; }

.hero__button--secondary {
  color: var(--club-title) !important;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--club-line);
  backdrop-filter: blur(10px);
}
.hero__button--secondary:hover {
  background: #fff;
  transform: translateY(-4px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.06);
  border-color: rgba(245, 145, 34, 0.4);
}

.hero__meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid rgba(138, 90, 31, 0.1);
}

.hero__stat {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.hero__stat strong {
  color: var(--club-accent-deep);
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
}

.hero__stat span {
  color: var(--club-text-soft);
  font-size: 0.9rem;
  font-weight: 500;
}

.hero__panel {
  padding: 3rem 2.5rem;
  background: linear-gradient(160deg, var(--club-navy), #0f1621);
  color: #ffffff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(31, 42, 58, 0.25);
  border: 1px solid rgba(255,255,255,0.1);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.hero__panel::before {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 250px; height: 250px;
  background: var(--club-accent);
  filter: blur(100px);
  opacity: 0.35;
  border-radius: 50%;
  pointer-events: none;
}

.hero__panel h2 {
  color: #fff;
  font-size: 1.5rem;
  margin: 0 0 1.2rem;
  border: none;
  padding: 0;
}
.hero__panel h2::after { display: none; }

.hero__panel ul {
  list-style: none;
  padding: 0;
  margin: 0 0 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.hero__panel ul:last-child { margin-bottom: 0; }
.hero__panel li {
  padding-left: 1.8rem;
  position: relative;
  color: rgba(255,255,255,0.85);
  font-size: 1rem;
  line-height: 1.5;
}
.hero__panel li::before {
  content: "✦";
  position: absolute;
  left: 0; top: 2px;
  color: var(--club-accent);
  font-size: 1.1rem;
}
.hero__panel a {
  color: var(--club-accent-soft);
  text-decoration: underline;
  text-decoration-color: rgba(255,238,217,0.3);
  text-underline-offset: 4px;
  transition: all 0.3s;
}
.hero__panel a:hover {
  color: #fff;
  text-decoration-color: #fff;
}

.section-title {
  margin: 5rem 0 1.5rem;
  text-align: center;
  font-size: 2.2rem;
}
.section-title::after {
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 5px;
}
.section-lead {
  text-align: center;
  max-width: 52rem;
  margin: 0 auto 3.5rem;
  font-size: 1.15rem;
  color: var(--club-text-soft);
  line-height: 1.7;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.8rem;
  margin-bottom: 3rem;
}

.feature-card {
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(255,255,255,0.9), rgba(255,255,255,0.5));
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 5px;
  background: linear-gradient(90deg, var(--club-accent), #ff6b00);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--club-shadow-glow);
  background: #ffffff;
}
.feature-card:hover::before { opacity: 1; }

.feature-card h3 {
  margin: 0 0 1.2rem;
  font-size: 1.4rem;
  color: var(--club-title);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.feature-card p {
  margin: 0;
  font-size: 1rem;
  color: var(--club-text-soft);
  line-height: 1.7;
}

.chapter-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.8rem;
}

.chapter-card {
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  background: linear-gradient(135deg, rgba(255,255,255,0.9), rgba(255,255,255,0.5));
}
.chapter-card a {
  text-decoration: none !important;
  color: inherit;
  display: block;
  height: 100%;
}
.chapter-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--club-shadow-glow);
  background: #fff;
  border: 1px solid rgba(245, 145, 34, 0.4);
}

.chapter-card__tag {
  display: inline-block;
  padding: 0.4rem 1rem;
  border-radius: 999px;
  background: rgba(245, 145, 34, 0.1);
  color: var(--club-accent-deep);
  font-size: 0.8rem;
  font-weight: 800;
  margin-bottom: 1.2rem;
  transition: all 0.3s;
}
.chapter-card:hover .chapter-card__tag {
  background: var(--club-accent);
  color: #fff;
  box-shadow: 0 4px 12px rgba(245, 145, 34, 0.3);
}

.chapter-card h3 {
  margin: 0 0 1rem;
  font-size: 1.5rem;
  color: var(--club-title);
}
.chapter-card p {
  margin: 0;
  color: var(--club-text-soft);
  font-size: 1rem;
  line-height: 1.7;
}

.feature-card:nth-child(1) { animation: fadeInUp 0.8s ease-out 0.2s both; }
.feature-card:nth-child(2) { animation: fadeInUp 0.8s ease-out 0.4s both; }
.feature-card:nth-child(3) { animation: fadeInUp 0.8s ease-out 0.6s both; }
.chapter-card:nth-child(1) { animation: fadeInUp 0.8s ease-out 0.3s both; }
.chapter-card:nth-child(2) { animation: fadeInUp 0.8s ease-out 0.5s both; }
.chapter-card:nth-child(3) { animation: fadeInUp 0.8s ease-out 0.7s both; }
.chapter-card:nth-child(4) { animation: fadeInUp 0.8s ease-out 0.9s both; }

@media screen and (max-width: 1024px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__main { padding: 3rem 2rem; }
  .hero__panel { padding: 3rem 2rem; }
}

@media screen and (max-width: 768px) {
  .md-content__inner { padding: 1.5rem; border-radius: 20px; }
  .feature-grid, .chapter-grid { grid-template-columns: 1fr; }
  .hero__meta { grid-template-columns: 1fr; gap: 1rem; }
  .hero__main { padding: 2.5rem 1.5rem; }
  .hero__title { font-size: 2.2rem; }
  .section-title { font-size: 1.8rem; }
}