:root {
  --color-primary: #d2bec4;
  --color-secondary-1: #cfb9bf;
  --color-secondary-2: #453a3c;
  --color-secondary-3: #958636;
  --color-secondary-4: #913e36;
  --color-bg: #f7f3f4;
  --color-surface: #ffffff;
  --color-text: #2f282a;
  --color-muted: #6d6064;
  --shadow-soft: 0 10px 30px rgba(69, 58, 60, 0.12);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --container: 1180px;
  --transition: 0.25s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", sans-serif;
  color: var(--color-text);
  background: linear-gradient(180deg, #fcf9fa 0%, var(--color-bg) 100%);
  line-height: 1.6;
}

img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(var(--container), calc(100% - 2rem));
  margin: 0 auto;
}

.section {
  padding: 4rem 0;
}

.section-alt {
  background: rgba(207, 185, 191, 0.16);
}

.section-title {
  margin-bottom: 1.6rem;
  text-align: center;
}

.section-title h2 {
  margin: 0;
  font-size: clamp(1.5rem, 2vw, 2rem);
  color: var(--color-secondary-2);
}

.section-title p {
  margin: 0.4rem 0 0;
  color: var(--color-muted);
}

.card {
  background: var(--color-surface);
  border: 1px solid rgba(69, 58, 60, 0.08);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 1rem 1.1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  backdrop-filter: blur(10px);
  background: rgba(247, 243, 244, 0.86);
  border-bottom: 1px solid rgba(69, 58, 60, 0.1);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 800;
  color: var(--color-secondary-2);
}

.brand img {
  width: 32px;
  height: 32px;
  border-radius: 6px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.main-nav a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.6rem;
  border-radius: var(--radius-sm);
  color: var(--color-secondary-2);
  font-size: 0.95rem;
  transition: var(--transition);
}

.main-nav a:hover {
  background: rgba(210, 190, 196, 0.35);
  color: var(--color-secondary-4);
}

.menu-toggle {
  display: none;
  border: 0;
  background: transparent;
  color: var(--color-secondary-2);
  font-size: 1.2rem;
  cursor: pointer;
}

.hero {
  padding: 2.2rem 0 2.8rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 1.2rem;
  align-items: center;
}

.hero-content h1 {
  margin: 0.3rem 0 0.5rem;
  font-size: clamp(1rem, 3vw, 2.55rem);
  line-height: 1.2;
  color: var(--color-secondary-2);
  white-space: nowrap;
}

.hero-kicker {
  display: inline-block;
  margin: 0;
  font-size: 0.86rem;
  color: var(--color-secondary-4);
  background: rgba(145, 62, 54, 0.13);
  border-radius: 999px;
  padding: 0.18rem 0.65rem;
}

.hero-intro {
  margin: 0 0 0.95rem;
  color: var(--color-muted);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.85rem;
}

.hero-meta span {
  font-size: 0.86rem;
  color: var(--color-secondary-2);
  background: rgba(210, 190, 196, 0.32);
  border-radius: 999px;
  padding: 0.22rem 0.62rem;
}

.feature-tags {
  margin: 0 0 1rem;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.feature-tags li {
  font-size: 0.82rem;
  color: #ffffff;
  background: linear-gradient(90deg, var(--color-secondary-3), #b6a24a);
  border-radius: 999px;
  padding: 0.22rem 0.62rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.btn {
  border: 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 700;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary,
.btn-secondary,
.btn-filter {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.68rem 1rem;
}

.btn-primary {
  color: #ffffff;
  background: linear-gradient(120deg, var(--color-secondary-4), #b1544a);
  box-shadow: 0 8px 20px rgba(145, 62, 54, 0.25);
}

.btn-secondary {
  background: rgba(69, 58, 60, 0.08);
  color: var(--color-secondary-2);
}

.btn-filter {
  background: #ffffff;
  border: 1px solid rgba(69, 58, 60, 0.14);
  color: var(--color-secondary-2);
}

.btn-filter.is-active {
  background: var(--color-primary);
  border-color: transparent;
}

.hero-cover img {
  border: 1px solid rgba(69, 58, 60, 0.14);
  box-shadow: var(--shadow-soft);
}

.news-grid,
.gallery-grid,
.version-list,
.guide-grid,
.chapter-grid {
  display: grid;
  gap: 1rem;
}

.news-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.news-item time {
  display: inline-block;
  margin-bottom: 0.35rem;
  color: var(--color-secondary-4);
  font-size: 0.88rem;
}

.news-item h3 {
  margin: 0 0 0.45rem;
}

.news-item p {
  margin: 0;
  color: var(--color-muted);
}

.news-item a {
  display: inline-block;
  margin-top: 0.7rem;
  color: var(--color-secondary-4);
  font-weight: 700;
}

.gallery-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.gallery-item {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid rgba(69, 58, 60, 0.1);
}

.gallery-item img {
  transition: transform var(--transition);
}

.gallery-item:hover img {
  transform: scale(1.04);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.stat {
  text-align: center;
}

.stat strong {
  display: block;
  font-size: 1.5rem;
  color: var(--color-secondary-2);
}

.stat span {
  font-size: 0.92rem;
  color: var(--color-muted);
}

.review-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  list-style: none;
  margin: 1rem 0;
  padding: 0;
}

.review-tags li {
  font-size: 0.84rem;
  background: rgba(149, 134, 54, 0.18);
  color: #625929;
  border-radius: 999px;
  padding: 0.2rem 0.66rem;
}

.testimonial {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.8rem;
}

.testimonial blockquote {
  margin: 0;
  font-size: 1rem;
  color: var(--color-secondary-2);
}

.testimonial p {
  margin: 0.45rem 0 0;
  color: var(--color-muted);
}

.carousel-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 0;
  cursor: pointer;
  color: var(--color-secondary-2);
  background: rgba(210, 190, 196, 0.42);
  transition: var(--transition);
}

.carousel-btn:hover {
  background: rgba(145, 62, 54, 0.2);
}

.version-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.version-item h3 {
  margin: 0;
  color: var(--color-secondary-2);
}

.version-item p {
  margin: 0.5rem 0;
}

.version-item a {
  display: inline-block;
  margin-top: 0.5rem;
  font-weight: 700;
  color: var(--color-secondary-4);
}

.guide-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.guide-grid,
.chapter-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.guide-item h3,
.chapter-item h3 {
  margin-top: 0;
}

.badge {
  display: inline-block;
  margin-top: 0.55rem;
  color: #ffffff;
  background: linear-gradient(90deg, #7f7132, var(--color-secondary-3));
  border-radius: 999px;
  font-size: 0.82rem;
  padding: 0.18rem 0.62rem;
}

.chapter-type {
  margin: 0 0 0.45rem;
  color: var(--color-secondary-4);
  font-weight: 700;
  font-size: 0.86rem;
}

.faq-list {
  display: grid;
  gap: 0.8rem;
}

.faq-item {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid rgba(69, 58, 60, 0.09);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  border: 0;
  background: #ffffff;
  color: var(--color-secondary-2);
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
  font-weight: 700;
  padding: 0.95rem 1rem;
  cursor: pointer;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.32s ease;
}

.faq-answer p {
  margin: 0;
  padding: 0 1rem 0.95rem;
  color: var(--color-muted);
}

.faq-item.is-open .faq-answer {
  max-height: 180px;
}

.faq-item.is-open .faq-question i {
  transform: rotate(45deg);
}

.site-footer {
  color: #f0e9eb;
  background: linear-gradient(135deg, var(--color-secondary-2), #2f2527);
  padding: 2.2rem 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.2rem;
}

.site-footer h3 {
  margin-top: 0;
  margin-bottom: 0.6rem;
  color: #ffffff;
}

.site-footer a {
  display: block;
  margin: 0.35rem 0;
  color: #f0e9eb;
}

.site-footer a:hover {
  color: #ffffff;
}

.copyright {
  margin-top: 0.8rem;
  opacity: 0.85;
}

.back-to-top {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 50%;
  background: linear-gradient(120deg, var(--color-secondary-4), #b1544a);
  color: #ffffff;
  box-shadow: 0 8px 20px rgba(145, 62, 54, 0.28);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: var(--transition);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.btn-clicked {
  transform: scale(0.97) !important;
}

@media (max-width: 980px) {
  .main-nav {
    position: absolute;
    top: 68px;
    right: 0.8rem;
    width: min(320px, calc(100% - 1.6rem));
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 0.45rem;
    border-radius: 12px;
    border: 1px solid rgba(69, 58, 60, 0.12);
    background: #fff;
    box-shadow: var(--shadow-soft);
  }

  .main-nav.is-open {
    display: flex;
  }

  .main-nav a {
    width: 100%;
    padding: 0.68rem 0.7rem;
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .hero-grid,
  .news-grid,
  .gallery-grid,
  .stats-grid,
  .version-list,
  .guide-grid,
  .chapter-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero-meta {
    gap: 0.42rem;
  }

  .hero-meta span {
    font-size: 0.82rem;
  }
}