:root {
  --brand: #d63b6a;
  --brand-dark: #b02d55;
  --brand-soft: #fff0f5;
  --ink: #1a1520;
  --muted: #5c5360;
  --line: #eadde3;
  --bg: #faf7f8;
  --white: #ffffff;
  --shadow: 0 12px 40px rgba(26, 21, 32, 0.08);
  --radius: 16px;
  --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(ellipse 80% 50% at 10% -10%, #ffe4ee 0%, transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 0%, #ffe9f2 0%, transparent 45%),
    linear-gradient(180deg, #fff8fb 0%, var(--bg) 28%, #f7f4f6 100%);
  line-height: 1.8;
  font-size: 16px;
}

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

a {
  color: var(--brand);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--brand-dark);
}

.container {
  width: min(100% - 32px, var(--max));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(255, 252, 253, 0.88);
  border-bottom: 1px solid rgba(214, 59, 106, 0.12);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: 0.02em;
}

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

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav a {
  color: var(--muted);
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.95rem;
}

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

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 10px;
  width: 44px;
  height: 44px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
}

/* Hero */
.hero {
  padding: 56px 0 40px;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: center;
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.15;
  margin: 0 0 12px;
  color: var(--ink);
}

.hero-brand span {
  color: var(--brand);
}

.hero h1 {
  font-size: clamp(1.15rem, 2.2vw, 1.45rem);
  font-weight: 600;
  margin: 0 0 14px;
  color: var(--muted);
  line-height: 1.55;
}

.hero-lead {
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 34em;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 12px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  font-family: inherit;
}

.btn-primary {
  background: linear-gradient(135deg, var(--brand), #e85a7c);
  color: #fff;
  box-shadow: 0 10px 24px rgba(214, 59, 106, 0.28);
}

.btn-primary:hover {
  color: #fff;
  filter: brightness(1.05);
}

.btn-ghost {
  background: var(--white);
  color: var(--ink);
  border: 1px solid var(--line);
}

.btn-ghost:hover {
  color: var(--brand);
  border-color: var(--brand);
}

.hero-visual {
  position: relative;
}

.hero-visual img {
  width: 100%;
  border-radius: 24px;
  box-shadow: var(--shadow);
  object-fit: cover;
  aspect-ratio: 4 / 5;
  max-height: 520px;
}

.hero-float {
  position: absolute;
  right: -8%;
  bottom: -6%;
  width: 42%;
  border-radius: 18px;
  box-shadow: var(--shadow);
  border: 4px solid #fff;
  animation: floatY 5s ease-in-out infinite;
}

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  animation: fadeUp 0.7s ease both;
}

.reveal-delay {
  animation-delay: 0.15s;
}

/* Sections */
.section {
  padding: 56px 0;
}

.section-alt {
  background: rgba(255, 255, 255, 0.55);
  border-block: 1px solid rgba(234, 221, 227, 0.7);
}

.section-head {
  max-width: 720px;
  margin-bottom: 32px;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  margin: 0 0 10px;
  line-height: 1.3;
}

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

.prose {
  max-width: 820px;
}

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

.prose h2 {
  font-size: 1.7rem;
  margin: 2em 0 0.6em;
}

.prose h3 {
  font-size: 1.25rem;
  margin: 1.6em 0 0.5em;
}

.prose p {
  margin: 0 0 1em;
  color: var(--muted);
}

.prose ul,
.prose ol {
  color: var(--muted);
  padding-left: 1.2em;
}

.prose li {
  margin-bottom: 0.45em;
}

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

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

.feature-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: top;
}

.feature-card .body {
  padding: 16px 18px 20px;
}

.feature-card h3 {
  margin: 0 0 8px;
  font-size: 1.08rem;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Category chips */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.cat-item {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  text-align: center;
  color: var(--ink);
}

.cat-item img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  object-position: top;
}

.cat-item span {
  display: block;
  padding: 12px 8px;
  font-weight: 600;
  font-size: 0.95rem;
}

.cat-item:hover {
  border-color: rgba(214, 59, 106, 0.35);
  color: var(--brand);
}

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  counter-reset: step;
}

.step {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 22px;
  position: relative;
}

.step::before {
  counter-increment: step;
  content: counter(step);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--brand-soft);
  color: var(--brand);
  display: grid;
  place-items: center;
  font-weight: 700;
  margin-bottom: 14px;
}

.step h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
}

.step p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Gallery */
.gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.gallery img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: 14px;
  transition: transform 0.3s ease;
}

.gallery a:hover img {
  transform: scale(1.03);
}

/* FAQ */
.faq details {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 18px;
  margin-bottom: 10px;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq details[open] summary {
  color: var(--brand);
  margin-bottom: 8px;
}

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

/* Breadcrumb / page hero */
.page-hero {
  padding: 40px 0 20px;
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  margin: 8px 0 10px;
}

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

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

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

.content-panel {
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 28px 28px 36px;
  margin-bottom: 48px;
}

/* Error pages */
.error-page {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 60px 20px;
}

.error-page .code {
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 7rem);
  color: var(--brand);
  line-height: 1;
  margin: 0;
}

.error-page h1 {
  margin: 12px 0;
  font-size: 1.5rem;
}

.error-page p {
  color: var(--muted);
  max-width: 28em;
  margin: 0 auto 24px;
}

/* Footer */
.site-footer {
  background: #1f1722;
  color: #d8cfd4;
  padding: 48px 0 28px;
  margin-top: 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 28px;
  margin-bottom: 28px;
}

.site-footer h3 {
  color: #fff;
  font-family: var(--font-display);
  margin: 0 0 12px;
  font-size: 1.15rem;
}

.site-footer p,
.site-footer a {
  color: #c9bec5;
  font-size: 0.95rem;
}

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

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 18px;
  font-size: 0.88rem;
  color: #9a8f96;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
}

.toc {
  background: var(--brand-soft);
  border-radius: 14px;
  padding: 16px 18px;
  margin: 0 0 28px;
}

.toc h2 {
  font-size: 1rem;
  margin: 0 0 10px;
  font-family: var(--font-body);
}

.toc ol {
  margin: 0;
  padding-left: 1.2em;
  color: var(--muted);
}

.toc a {
  color: var(--ink);
}

.toc a:hover {
  color: var(--brand);
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

.shot {
  border-radius: 16px;
  box-shadow: var(--shadow);
  border: 3px solid #fff;
}

.internal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.internal-links a {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 14px;
  color: var(--ink);
  font-size: 0.92rem;
}

.internal-links a:hover {
  border-color: var(--brand);
  color: var(--brand);
}

/* Mobile */
@media (max-width: 960px) {
  .hero-grid,
  .feature-grid,
  .steps,
  .footer-grid,
  .two-col {
    grid-template-columns: 1fr;
  }

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

  .hero-float {
    display: none;
  }

  .hero-visual img {
    max-height: 420px;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav {
    display: none;
    position: absolute;
    left: 16px;
    right: 16px;
    top: 68px;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 10px;
    box-shadow: var(--shadow);
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: 12px 14px;
  }

  .hero {
    padding: 36px 0 24px;
  }

  .section {
    padding: 40px 0;
  }

  .content-panel {
    padding: 20px 16px 28px;
  }

  .gallery {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
}

@media (max-width: 480px) {
  .cat-grid {
    grid-template-columns: 1fr 1fr;
  }

  .cta-row {
    flex-direction: column;
  }

  .cta-row .btn {
    width: 100%;
  }
}