:root {
  --bg: #0a0a0c;
  --bg-soft: #141418;
  --bg-card: #1a1a20;
  --line: #2a2a32;
  --text: #f2f2f4;
  --muted: #a7a7b0;
  --accent: #e11d48;
  --accent-soft: #fb7185;
  --gold: #f59e0b;
  --max: 1180px;
  --radius: 14px;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding-top: 64px;
  font-family: var(--font);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(225, 29, 72, 0.18), transparent 55%),
    radial-gradient(900px 420px at 90% 0%, rgba(245, 158, 11, 0.1), transparent 50%),
    linear-gradient(180deg, #0d0d12 0%, var(--bg) 40%, #09090b 100%);
  color: var(--text);
  line-height: 1.75;
  min-height: 100vh;
}

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

a {
  color: var(--accent-soft);
  text-decoration: none;
}

a:hover {
  color: #fff;
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(10, 10, 12, 0.86);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.ads-sticky {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  z-index: 90;
}

.ads-spacer {
  width: 100%;
  height: 0;
  pointer-events: none;
}

.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: 0.7rem;
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.02em;
}

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

.brand span {
  font-size: 1.05rem;
}

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

.nav a {
  color: var(--muted);
  font-size: 0.95rem;
  padding: 0.35rem 0;
  border-bottom: 2px solid transparent;
}

.nav a:hover,
.nav a.active {
  color: #fff;
  border-bottom-color: var(--accent);
}

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

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: #fff;
  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 {
  padding: 2.5rem 0 1.5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: center;
}

.hero-copy h1 {
  margin: 0 0 0.8rem;
  font-size: clamp(1.8rem, 3.2vw, 2.7rem);
  line-height: 1.25;
  letter-spacing: 0.01em;
}

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

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.75rem 1.2rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  transition: 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #be123c);
  color: #fff;
}

.btn-primary:hover {
  filter: brightness(1.08);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: var(--accent-soft);
  color: #fff;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.hero-meta span {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
}

.hero-visual {
  position: relative;
}

.hero-visual img {
  width: 100%;
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.section {
  padding: 2.2rem 0;
}

.section-head {
  margin-bottom: 1.2rem;
}

.section-head h2 {
  margin: 0 0 0.45rem;
  font-size: clamp(1.35rem, 2.4vw, 1.85rem);
}

.section-head p {
  margin: 0;
  color: var(--muted);
  max-width: 46rem;
}

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

.feature-card,
.content-card,
.info-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.feature-card img,
.content-card img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  background: var(--bg-soft);
}

.content-card img.landscape,
.feature-card img.landscape {
  aspect-ratio: 16 / 10;
}

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

.feature-card h3,
.content-card h3,
.info-card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
}

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

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}

.prose {
  background: rgba(20, 20, 24, 0.72);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.35rem 1.4rem;
}

.prose h2,
.prose h3 {
  margin-top: 1.6rem;
  margin-bottom: 0.7rem;
  line-height: 1.35;
}

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

.prose p {
  margin: 0 0 1rem;
  color: #d5d5dc;
}

.prose ul,
.prose ol {
  margin: 0 0 1rem;
  padding-left: 1.2rem;
  color: #d5d5dc;
}

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

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

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 1rem 0 0;
}

.tag-list a {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg-card);
  color: var(--muted);
  font-size: 0.9rem;
}

.tag-list a:hover {
  border-color: var(--accent);
  color: #fff;
}

.shot-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.85rem;
}

.shot-row img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--line);
}

.faq details {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.9rem 1rem;
  margin-bottom: 0.7rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  color: #fff;
}

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

.cta-band {
  margin: 1rem 0 2rem;
  padding: 1.6rem;
  border-radius: calc(var(--radius) + 2px);
  background:
    linear-gradient(120deg, rgba(225, 29, 72, 0.22), rgba(245, 158, 11, 0.1)),
    var(--bg-card);
  border: 1px solid rgba(225, 29, 72, 0.35);
  text-align: center;
}

.cta-band h2 {
  margin: 0 0 0.5rem;
}

.cta-band p {
  margin: 0 0 1rem;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #07070a;
  padding: 2rem 0 1.6rem;
  margin-top: 1rem;
}

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

.site-footer h3 {
  margin: 0 0 0.7rem;
  font-size: 1rem;
}

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

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

.site-footer li {
  margin-bottom: 0.45rem;
}

.copyright {
  margin-top: 1.4rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: #7d7d86;
  font-size: 0.85rem;
  text-align: center;
}

.page-hero {
  padding: 2rem 0 0.5rem;
}

.page-hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

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

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

.error-page h1 {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  margin: 0 0 0.4rem;
  color: var(--accent-soft);
}

.error-page p {
  color: var(--muted);
  max-width: 28rem;
  margin: 0 auto 1.2rem;
}

.breadcrumb {
  color: var(--muted);
  font-size: 0.88rem;
  margin-bottom: 0.8rem;
}

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

.breadcrumb a:hover {
  color: #fff;
}

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

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

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

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

  .nav {
    display: none;
  }

  .nav.open {
    display: flex;
    position: absolute;
    top: calc(100% - 0.35rem);
    right: 0;
    left: auto;
    width: min(220px, calc(100vw - 2rem));
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
    padding: 0.7rem;
    background: rgba(18, 18, 22, 0.98);
    border: 1px solid var(--line);
    border-radius: 12px;
    box-shadow: var(--shadow);
    z-index: 120;
  }

  .nav.open a {
    padding: 0.55rem 0.7rem;
    border-bottom: none;
    border-radius: 8px;
  }

  .nav.open a:hover,
  .nav.open a.active {
    background: rgba(225, 29, 72, 0.16);
    border-bottom-color: transparent;
  }

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

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

  .hero {
    padding-top: 1.4rem;
  }

  .prose {
    padding: 1.1rem;
  }

  .feature-card img,
  .content-card img {
    aspect-ratio: 16 / 10;
  }
}