:root {
  --brand: #e11d48;
  --brand-dark: #be123c;
  --brand-soft: #fff1f2;
  --ink: #1c1917;
  --muted: #57534e;
  --line: #e7e5e4;
  --bg: #fffafb;
  --card: #ffffff;
  --accent: #f43f5e;
  --shadow: 0 12px 40px rgba(190, 18, 60, 0.08);
  --radius: 18px;
  --max: 1120px;
  --font-display: "ZCOOL XiaoWei", "Noto Serif SC", serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, #ffe4e6 0%, transparent 55%),
    radial-gradient(900px 420px at 100% 0%, #fecdd3 0%, transparent 50%),
    linear-gradient(180deg, #fff7f8 0%, var(--bg) 28%, #ffffff 100%);
  line-height: 1.8;
  font-size: 16px;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--brand-dark);
  text-decoration: none;
}

a:hover {
  color: var(--brand);
  text-decoration: underline;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(255, 250, 251, 0.88);
  border-bottom: 1px solid rgba(231, 229, 228, 0.8);
}

.nav-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: 0.02em;
}

.brand:hover {
  text-decoration: none;
  color: var(--brand-dark);
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  object-fit: cover;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  align-items: center;
}

.nav a {
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
}

.nav a:hover,
.nav a.active {
  color: var(--brand-dark);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 10px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  flex-shrink: 0;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.hero {
  padding: 3.2rem 0 2.2rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2rem;
  align-items: center;
}

.hero-copy h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.25;
  color: var(--ink);
  font-weight: 400;
}

.hero-copy .lead {
  margin: 0 0 1.4rem;
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 36rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.25rem;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--brand), #fb7185);
  color: #fff;
  box-shadow: 0 10px 24px rgba(225, 29, 72, 0.28);
}

.btn-primary:hover {
  color: #fff;
  background: linear-gradient(135deg, var(--brand-dark), var(--brand));
}

.btn-ghost {
  background: #fff;
  color: var(--brand-dark);
  border: 1px solid #fecdd3;
}

.btn-ghost:hover {
  color: var(--brand-dark);
  background: var(--brand-soft);
}

.hero-visual {
  position: relative;
  border-radius: 28px;
  overflow: hidden;
  box-shadow: var(--shadow);
  background: #111;
  min-height: 360px;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 360px;
  animation: riseIn 0.9s ease both;
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(16px) scale(1.02);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.section {
  padding: 2.8rem 0;
}

.section-head {
  margin-bottom: 1.5rem;
  max-width: 46rem;
}

.section-head h2 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3vw, 2.1rem);
  font-weight: 400;
  line-height: 1.3;
}

.section-head p {
  margin: 0;
  color: var(--muted);
}

.toc {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.8rem;
  margin: 1.5rem 0 0.5rem;
}

.toc a {
  display: block;
  padding: 0.9rem 1rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--ink);
  text-decoration: none;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.toc a:hover {
  border-color: #fda4af;
  box-shadow: var(--shadow);
  transform: translateY(-2px);
  text-decoration: none;
}

.toc strong {
  display: block;
  color: var(--brand-dark);
  margin-bottom: 0.2rem;
}

.toc span {
  color: var(--muted);
  font-size: 0.88rem;
}

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

.gallery-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 18px rgba(28, 25, 23, 0.04);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  animation: fadeUp 0.7s ease both;
}

.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.gallery-item img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  background: #1c1917;
}

.gallery-item .cap {
  padding: 0.9rem 1rem 1.1rem;
}

.gallery-item h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
  font-family: var(--font-display);
  font-weight: 400;
}

.gallery-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.feature-row {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1.5rem;
  align-items: center;
  margin: 1.8rem 0;
  padding: 1.2rem;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  border-radius: 22px;
}

.feature-row.reverse {
  grid-template-columns: 0.9fr 1.1fr;
}

.feature-row.reverse .feature-media {
  order: 2;
}

.feature-row.reverse .feature-text {
  order: 1;
}

.feature-media {
  border-radius: 16px;
  overflow: hidden;
  background: #111;
}

.feature-media img {
  width: 100%;
  max-height: 520px;
  object-fit: cover;
  object-position: top center;
}

.feature-text h3 {
  margin: 0 0 0.7rem;
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 400;
}

.feature-text p {
  margin: 0 0 0.85rem;
  color: var(--muted);
}

.feature-text ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
}

.feature-text li {
  margin-bottom: 0.35rem;
}

.prose {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 1.6rem 1.5rem;
}

.prose h2,
.prose h3 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.35;
}

.prose h2 {
  margin: 1.8rem 0 0.8rem;
  font-size: 1.55rem;
}

.prose h2:first-child {
  margin-top: 0;
}

.prose h3 {
  margin: 1.3rem 0 0.6rem;
  font-size: 1.2rem;
}

.prose p {
  margin: 0 0 1rem;
  color: #44403c;
}

.prose ul,
.prose ol {
  color: #44403c;
  margin: 0 0 1rem;
  padding-left: 1.2rem;
}

.prose li {
  margin-bottom: 0.4rem;
}

.faq details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.9rem 1rem;
  margin-bottom: 0.7rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--ink);
}

.faq details p {
  margin: 0.7rem 0 0;
  color: var(--muted);
}

.page-hero {
  padding: 2.4rem 0 1rem;
}

.page-hero h1 {
  margin: 0 0 0.7rem;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 400;
}

.page-hero p {
  margin: 0;
  color: var(--muted);
  max-width: 42rem;
}

.breadcrumb {
  margin-bottom: 0.9rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.breadcrumb a {
  color: var(--muted);
}

.site-footer {
  margin-top: 3rem;
  padding: 2.2rem 0 2.6rem;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, #fff 0%, #fff1f2 100%);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 1.5rem;
}

.site-footer h3 {
  margin: 0 0 0.7rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 400;
}

.site-footer p,
.site-footer a {
  color: var(--muted);
  font-size: 0.95rem;
}

.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer li {
  margin-bottom: 0.4rem;
}

.copyright {
  margin-top: 1.6rem;
  padding-top: 1rem;
  border-top: 1px solid #fecdd3;
  color: var(--muted);
  font-size: 0.88rem;
}

.error-page {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 3rem 1rem;
}

.error-page h1 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 400;
}

.error-page p {
  margin: 0 0 1.2rem;
  color: var(--muted);
}

.related {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1rem;
}

.related a {
  display: inline-block;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand-dark);
  text-decoration: none;
  font-size: 0.9rem;
}

.related a:hover {
  background: #fecdd3;
}

@media (max-width: 960px) {
  .hero-grid,
  .feature-row,
  .feature-row.reverse,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .feature-row.reverse .feature-media,
  .feature-row.reverse .feature-text {
    order: initial;
  }

  .toc {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 720px) {
  .menu-toggle {
    display: inline-flex;
  }

  .nav {
    display: none;
    position: absolute;
    top: calc(100% + 1px);
    left: 0;
    right: 0;
    z-index: 120;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.55rem 0.75rem 0.85rem;
    background: rgba(255, 250, 251, 0.98);
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: var(--shadow);
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: 0.7rem 0.55rem;
    border-bottom: 1px solid #f5f5f4;
  }

  .nav a:last-child {
    border-bottom: none;
  }

  .nav-wrap {
    flex-wrap: nowrap;
  }

  .hero {
    padding-top: 1.6rem;
  }

  .hero-visual,
  .hero-visual img {
    min-height: 280px;
  }

  .toc,
  .gallery {
    grid-template-columns: 1fr;
  }

  .prose {
    padding: 1.2rem 1rem;
  }

  .feature-row {
    padding: 0.8rem;
  }
}