:root {
  --brand: #e11d48;
  --brand-dark: #be123c;
  --brand-soft: #fff1f2;
  --ink: #1c1917;
  --ink-soft: #57534e;
  --line: #e7e5e4;
  --bg: #fafaf9;
  --card: #ffffff;
  --max: 1120px;
  --radius: 12px;
  --shadow: 0 10px 30px rgba(28, 25, 23, 0.08);
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --display: "ZCOOL XiaoWei", "Noto Serif SC", "Songti SC", serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 8%, rgba(225, 29, 72, 0.08), transparent 36%),
    radial-gradient(circle at 88% 0%, rgba(251, 113, 133, 0.1), transparent 28%),
    linear-gradient(180deg, #fff 0%, var(--bg) 40%, #fff 100%);
  line-height: 1.75;
  min-height: 100vh;
}

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

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

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

ul {
  list-style: none;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink);
  font-weight: 700;
  font-size: 1.15rem;
}

.logo img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  object-fit: cover;
}

.logo span {
  font-family: var(--display);
  letter-spacing: 0.04em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.35rem 1.1rem;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--ink-soft);
  font-size: 0.95rem;
  font-weight: 500;
}

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

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

.menu-btn span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

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

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

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

.hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  min-height: min(78vh, 720px);
  display: grid;
  align-items: end;
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  animation: heroZoom 18s ease-in-out infinite alternate;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(28, 25, 23, 0.78) 0%, rgba(28, 25, 23, 0.45) 48%, rgba(28, 25, 23, 0.25) 100%),
    linear-gradient(0deg, rgba(28, 25, 23, 0.72) 0%, transparent 55%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 5.5rem 0 3.5rem;
  max-width: 680px;
  animation: riseIn 0.9s ease both;
}

.hero-brand {
  font-family: var(--display);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.15;
  margin-bottom: 0.85rem;
  letter-spacing: 0.06em;
}

.hero h1 {
  font-size: clamp(1.25rem, 2.4vw, 1.7rem);
  font-weight: 600;
  margin-bottom: 0.9rem;
  color: #ffe4e6;
}

.hero p {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 1.4rem;
  max-width: 36em;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.25rem;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

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

.btn-primary {
  background: var(--brand);
  color: #fff;
}

.btn-primary:hover {
  background: var(--brand-dark);
  color: #fff;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
}

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

.section {
  padding: 3.5rem 0;
}

.section-head {
  margin-bottom: 1.75rem;
}

.section-head h2 {
  font-family: var(--display);
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  margin-bottom: 0.45rem;
  letter-spacing: 0.03em;
}

.section-head p {
  color: var(--ink-soft);
  max-width: 46em;
}

.grid-4,
.grid-3,
.grid-2 {
  display: grid;
  gap: 1.1rem;
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

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

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

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

.media-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(28, 25, 23, 0.12);
}

.media-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: #f5f5f4;
}

.media-card .body {
  padding: 0.95rem 1rem 1.1rem;
}

.media-card h3 {
  font-size: 1.02rem;
  margin-bottom: 0.35rem;
}

.media-card p {
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.feature-list {
  display: grid;
  gap: 1rem;
}

.feature-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 1rem;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  padding-right: 1rem;
}

.feature-item img {
  width: 120px;
  height: 96px;
  object-fit: cover;
}

.feature-item h3 {
  font-size: 1.05rem;
  margin-bottom: 0.25rem;
}

.feature-item p {
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.prose {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem 1.4rem;
  box-shadow: var(--shadow);
}

.prose h2,
.prose h3 {
  font-family: var(--display);
  margin: 1.4rem 0 0.7rem;
  letter-spacing: 0.02em;
}

.prose h2:first-child,
.prose h3:first-child {
  margin-top: 0;
}

.prose p {
  margin-bottom: 1rem;
  color: #292524;
  text-align: justify;
}

.prose ul {
  margin: 0 0 1rem 1.2rem;
  list-style: disc;
  color: var(--ink-soft);
}

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

.prose a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-hero {
  padding: 2.8rem 0 1.2rem;
}

.page-hero h1 {
  font-family: var(--display);
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  margin-bottom: 0.55rem;
}

.page-hero p {
  color: var(--ink-soft);
  max-width: 48em;
}

.breadcrumb {
  color: var(--ink-soft);
  font-size: 0.9rem;
  margin-bottom: 0.8rem;
}

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

.cta-band {
  margin: 1rem 0 3rem;
  padding: 2rem;
  border-radius: calc(var(--radius) + 4px);
  background:
    linear-gradient(135deg, rgba(225, 29, 72, 0.95), rgba(190, 18, 60, 0.92)),
    url("/hot.jpg") center/cover;
  background-blend-mode: multiply;
  color: #fff;
  text-align: center;
}

.cta-band h2 {
  font-family: var(--display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 0.55rem;
}

.cta-band p {
  margin-bottom: 1.1rem;
  color: rgba(255, 255, 255, 0.92);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #fff;
  padding: 2.4rem 0 1.6rem;
  margin-top: 1rem;
}

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

.site-footer h3 {
  font-size: 1rem;
  margin-bottom: 0.7rem;
}

.site-footer p,
.site-footer a {
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.site-footer a {
  display: block;
  margin-bottom: 0.35rem;
}

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

.copyright {
  border-top: 1px solid var(--line);
  padding-top: 1rem;
  color: #78716c;
  font-size: 0.86rem;
  text-align: center;
}

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

.error-page h1 {
  font-family: var(--display);
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  color: var(--brand);
  line-height: 1;
  margin-bottom: 0.6rem;
}

.error-page p {
  color: var(--ink-soft);
  margin-bottom: 1.2rem;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.show {
  opacity: 1;
  transform: none;
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes heroZoom {
  from {
    transform: scale(1);
  }
  to {
    transform: scale(1.08);
  }
}

@media (max-width: 960px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .feature-item {
    grid-template-columns: 96px 1fr;
  }

  .feature-item img {
    width: 96px;
    height: 84px;
  }
}

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

  .menu-btn[aria-expanded="true"] {
    color: var(--brand);
  }

  .nav-links {
    display: none;
    position: absolute;
    left: 1rem;
    right: 1rem;
    top: 68px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 0.8rem;
    flex-direction: column;
    align-items: stretch;
    box-shadow: var(--shadow);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 0.55rem 0.4rem;
  }

  .hero {
    min-height: 62vh;
  }

  .hero-content {
    padding: 4.2rem 0 2.4rem;
  }

  .grid-4,
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .feature-item {
    grid-template-columns: 1fr;
    padding-right: 0;
  }

  .feature-item img {
    width: 100%;
    height: 160px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 2.4rem 0;
  }
}