:root {
  --brand: #e11d48;
  --brand-dark: #be123c;
  --brand-soft: #fff1f2;
  --ink: #1c1917;
  --muted: #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(1200px 500px at 10% -10%, #ffe4e6 0%, transparent 55%),
    radial-gradient(900px 400px at 100% 0%, #ffedd5 0%, transparent 50%),
    var(--bg);
  line-height: 1.75;
  min-height: 100vh;
}

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

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

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

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid var(--line);
}

.nav-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

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

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: cover;
}

.brand span {
  font-family: var(--display);
  letter-spacing: 0.02em;
}

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

.nav a {
  color: var(--muted);
  font-size: 0.95rem;
  padding: 0.25rem 0;
  position: relative;
}

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

.nav a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--brand);
  border-radius: 2px;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  color: var(--ink);
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  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 */
.hero {
  padding: 3.2rem 0 2.2rem;
}

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

.hero-badge {
  display: inline-block;
  background: var(--brand-soft);
  color: var(--brand-dark);
  font-size: 0.85rem;
  padding: 0.28rem 0.7rem;
  border-radius: 999px;
  margin-bottom: 0.9rem;
}

.hero h1 {
  font-family: var(--display);
  font-size: clamp(1.9rem, 3.5vw, 2.75rem);
  line-height: 1.25;
  margin-bottom: 1rem;
  letter-spacing: 0.01em;
}

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

.hero-actions {
  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: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
}

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

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

.btn-ghost {
  background: #fff;
  border-color: var(--line);
  color: var(--ink);
}

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

.hero-visual {
  position: relative;
}

.hero-visual img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
}

/* Sections */
.section {
  padding: 2.6rem 0;
}

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

.section-head h2 {
  font-family: var(--display);
  font-size: clamp(1.45rem, 2.4vw, 1.9rem);
  margin-bottom: 0.55rem;
}

.section-head p {
  color: var(--muted);
  max-width: 48em;
}

.prose {
  max-width: 52em;
}

.prose h2,
.prose h3 {
  font-family: var(--display);
  margin: 1.6rem 0 0.75rem;
  line-height: 1.35;
}

.prose h2 {
  font-size: 1.55rem;
}

.prose h3 {
  font-size: 1.2rem;
}

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

.prose ul,
.prose ol {
  margin: 0 0 1rem 1.25rem;
  color: #292524;
}

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

.prose strong {
  color: var(--ink);
}

/* Feature / gallery grids */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.15rem;
}

.feature-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;
}

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

.feature-card img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: top;
  background: #f5f5f4;
}

.feature-card .body {
  padding: 1rem 1.05rem 1.15rem;
}

.feature-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.4rem;
}

.feature-card p {
  color: var(--muted);
  font-size: 0.92rem;
}

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

.shot-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.shot-item img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: top;
}

.shot-item figcaption {
  padding: 0.7rem 0.85rem;
  font-size: 0.88rem;
  color: var(--muted);
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: center;
}

.split img {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.muted-box {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
}

.toc {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  margin-bottom: 1.5rem;
}

.toc h2 {
  font-size: 1.05rem;
  margin-bottom: 0.55rem;
}

.toc ol {
  margin-left: 1.1rem;
  color: var(--muted);
}

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

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

.breadcrumb {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 1rem;
}

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

.page-title {
  font-family: var(--display);
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  margin-bottom: 0.75rem;
}

.page-intro {
  color: var(--muted);
  margin-bottom: 1.5rem;
  max-width: 48em;
}

/* Footer */
.site-footer {
  margin-top: 2rem;
  border-top: 1px solid var(--line);
  background: #fff;
  padding: 2rem 0 1.5rem;
}

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

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

.footer-grid p,
.footer-grid a {
  color: var(--muted);
  font-size: 0.92rem;
}

.footer-grid ul {
  list-style: none;
}

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

.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 1rem;
  color: var(--muted);
  font-size: 0.85rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  justify-content: space-between;
}

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

.error-page .code {
  font-family: var(--display);
  font-size: clamp(3.5rem, 10vw, 6rem);
  color: var(--brand);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.error-page h1 {
  font-size: 1.6rem;
  margin-bottom: 0.75rem;
}

.error-page p {
  color: var(--muted);
  margin-bottom: 1.4rem;
}

/* Animations */
@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

.reveal-delay {
  animation-delay: 0.12s;
}

.reveal-delay-2 {
  animation-delay: 0.24s;
}

/* Mobile */
@media (max-width: 900px) {
  .menu-toggle {
    display: inline-flex;
  }

  .nav {
    display: none;
    position: absolute;
    top: calc(100% + 1px);
    left: 0;
    right: 0;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.65rem 0.85rem;
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid var(--line);
    border-radius: 12px;
    box-shadow: var(--shadow);
    z-index: 120;
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: 0.7rem 0.35rem;
    border-bottom: 1px solid var(--line);
  }

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

  .nav a.active::after {
    display: none;
  }

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

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

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

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

  .hero {
    padding-top: 2rem;
  }
}

@media (max-width: 560px) {
  .shot-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    width: 100%;
  }

  .hero-actions .btn {
    flex: 1;
  }
}