:root {
  --bg: #0d0b10;
  --bg-2: #16121c;
  --bg-3: #1e1826;
  --pink: #ff4e72;
  --pink-soft: #ff7a93;
  --coral: #ff6b4a;
  --text: #f5f0f3;
  --muted: #b8a8b4;
  --line: rgba(255, 78, 114, 0.22);
  --radius: 14px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  --max: 1120px;
  --font: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(255, 78, 114, 0.18), transparent 60%),
    radial-gradient(900px 500px at 90% 0%, rgba(255, 107, 74, 0.12), transparent 55%),
    linear-gradient(180deg, #120e16 0%, var(--bg) 40%, #0a0810 100%);
  color: var(--text);
  line-height: 1.8;
  min-height: 100vh;
}

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

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

a:hover {
  color: #fff;
}

.container {
  width: min(100% - 32px, var(--max));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(13, 11, 16, 0.82);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
}

.brand img {
  width: 48px;
  height: 48px;
  border-radius: 12px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.brand-text strong {
  font-size: 1.15rem;
  letter-spacing: 0.04em;
}

.brand-text span {
  font-size: 0.78rem;
  color: var(--muted);
}

.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: #fff;
  background: rgba(255, 78, 114, 0.16);
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--bg-2);
  color: var(--text);
  border-radius: 10px;
  padding: 8px 12px;
  cursor: pointer;
}

.hero {
  padding: 56px 0 28px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 36px;
  align-items: center;
}

.hero-copy h1 {
  font-size: clamp(1.8rem, 3.4vw, 2.7rem);
  line-height: 1.25;
  margin-bottom: 16px;
  background: linear-gradient(90deg, #fff, var(--pink-soft));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-copy p {
  color: var(--muted);
  font-size: 1.05rem;
  margin-bottom: 22px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--pink), var(--coral));
  color: #fff;
  box-shadow: 0 10px 28px rgba(255, 78, 114, 0.35);
}

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

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

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  color: var(--muted);
  font-size: 0.92rem;
}

.hero-visual {
  position: relative;
}

.hero-visual img {
  width: 100%;
  border-radius: 22px;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
}

.section {
  padding: 48px 0;
}

.section-head {
  margin-bottom: 24px;
}

.section-head h2 {
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  margin-bottom: 10px;
}

.section-head p {
  color: var(--muted);
  max-width: 720px;
}

.prose {
  color: var(--muted);
}

.prose p,
.prose li {
  margin-bottom: 14px;
}

.prose h2,
.prose h3 {
  color: var(--text);
  margin: 28px 0 12px;
}

.prose ul,
.prose ol {
  padding-left: 1.2em;
  margin-bottom: 16px;
}

.feature-grid,
.shot-grid,
.card-grid {
  display: grid;
  gap: 18px;
}

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

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

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

.feature-card,
.content-card,
.shot-card,
.info-card {
  background: linear-gradient(180deg, rgba(30, 24, 38, 0.95), rgba(18, 14, 24, 0.95));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.feature-card,
.info-card,
.content-card {
  padding: 20px;
}

.feature-card h3,
.content-card h3,
.info-card h3 {
  margin-bottom: 8px;
  font-size: 1.1rem;
}

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

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

.shot-card figcaption {
  padding: 12px 14px 16px;
  color: var(--muted);
  font-size: 0.9rem;
}

.shot-card figcaption strong {
  display: block;
  color: var(--text);
  margin-bottom: 4px;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: center;
}

.split-media img {
  border-radius: 18px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

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

.step {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}

.step span {
  display: inline-flex;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 78, 114, 0.2);
  color: var(--pink-soft);
  font-weight: 700;
  margin-bottom: 10px;
}

.faq details {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
  margin-bottom: 10px;
}

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

.faq details p {
  color: var(--muted);
  margin-top: 10px;
}

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

.internal-links a {
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 78, 114, 0.12);
  border: 1px solid var(--line);
  color: var(--text);
  font-size: 0.92rem;
}

.page-hero {
  padding: 40px 0 10px;
}

.page-hero h1 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 10px;
}

.page-hero p {
  color: var(--muted);
}

.legal {
  padding: 20px 0 60px;
}

.breadcrumb {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

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

.error-page {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 60px 0;
}

.error-page h1 {
  font-size: clamp(2.4rem, 6vw, 4rem);
  margin-bottom: 12px;
  color: var(--pink-soft);
}

.error-page p {
  color: var(--muted);
  margin-bottom: 22px;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.35);
  padding: 36px 0 28px;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

.site-footer h3 {
  margin-bottom: 12px;
  font-size: 1rem;
}

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

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

.site-footer li {
  margin-bottom: 8px;
}

.copyright {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 16px;
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
}

.toc {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 20px 0 28px;
}

.toc h2 {
  font-size: 1rem;
  margin-bottom: 10px;
}

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

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

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

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

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

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

  .nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 16px;
    right: 16px;
    flex-direction: column;
    align-items: stretch;
    background: var(--bg-3);
    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-top: 28px;
  }

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

  .shot-card img {
    aspect-ratio: 3 / 4;
  }
}