:root {
  --bg: #0a0a0c;
  --bg-soft: #141418;
  --bg-card: #1a1a20;
  --line: #2a2a32;
  --text: #f2f2f5;
  --muted: #9a9aa3;
  --accent: #e11d48;
  --accent-soft: #fb7185;
  --max: 1120px;
  --radius: 12px;
  --font: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
}

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

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

a:hover {
  color: #fff;
}

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 12, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

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

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

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

.nav a:hover,
.nav a.active {
  color: #fff;
  background: var(--bg-card);
}

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

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
}

/* Hero */
.hero {
  padding: 48px 0 36px;
  background:
    radial-gradient(ellipse 80% 60% at 70% 10%, rgba(225, 29, 72, 0.18), transparent 55%),
    linear-gradient(180deg, #121218 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--line);
}

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

.hero h1 {
  margin: 0 0 14px;
  font-size: clamp(1.7rem, 3.2vw, 2.4rem);
  line-height: 1.35;
}

.hero .lead {
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0 0 22px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border-radius: 10px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: 0.2s ease;
}

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

.btn-primary:hover {
  background: #be123c;
  color: #fff;
}

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

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

.hero-shot {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
}

.hero-shot img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  max-height: 520px;
}

/* Sections */
.section {
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
}

.section-head {
  margin-bottom: 28px;
}

.section-head h2 {
  margin: 0 0 10px;
  font-size: clamp(1.35rem, 2.4vw, 1.85rem);
}

.section-head p {
  margin: 0;
  color: var(--muted);
  max-width: 720px;
}

.prose h2,
.prose h3 {
  margin-top: 1.6em;
  margin-bottom: 0.6em;
  line-height: 1.4;
}

.prose p {
  margin: 0 0 1em;
  color: #d6d6dc;
}

.prose ul,
.prose ol {
  margin: 0 0 1.2em;
  padding-left: 1.3em;
  color: #d6d6dc;
}

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

.prose strong {
  color: #fff;
}

/* Cards / grids */
.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

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

.card img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  background: #000;
}

.card-body {
  padding: 14px 14px 16px;
}

.card-body h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.card-body p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 28px 0;
  align-items: center;
}

.feature-row.reverse .feature-media {
  order: 2;
}

.feature-media {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
}

.feature-media img {
  width: 100%;
  aspect-ratio: 9 / 16;
  max-height: 480px;
  object-fit: cover;
  margin-inline: auto;
}

.feature-text h3 {
  margin: 0 0 12px;
  font-size: 1.3rem;
}

.feature-text p {
  color: #d6d6dc;
  margin: 0 0 12px;
}

.shot-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 24px 0;
}

.shot-strip img {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--line);
  aspect-ratio: 9 / 16;
  object-fit: cover;
  max-height: 360px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 8px;
}

.tag-list a,
.tag-list span {
  display: inline-block;
  padding: 8px 14px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.9rem;
}

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

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

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

.faq details p {
  margin: 12px 0 0;
  color: var(--muted);
}

.cta-box {
  margin-top: 28px;
  padding: 28px;
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(225, 29, 72, 0.2), rgba(20, 20, 24, 0.9));
  border: 1px solid rgba(225, 29, 72, 0.35);
  text-align: center;
}

.cta-box h2 {
  margin: 0 0 10px;
}

.cta-box p {
  margin: 0 0 18px;
  color: var(--muted);
}

/* Page hero (inner pages) */
.page-hero {
  padding: 40px 0 28px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #121218, var(--bg));
}

.page-hero h1 {
  margin: 0 0 10px;
  font-size: clamp(1.5rem, 2.8vw, 2.1rem);
}

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

.breadcrumb {
  margin-bottom: 12px;
  font-size: 0.9rem;
  color: var(--muted);
}

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

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

.content-wrap {
  padding: 40px 0 64px;
}

.content-wrap .prose {
  max-width: 820px;
}

/* Error pages */
.error-page {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 60px 16px;
}

.error-page h1 {
  font-size: 4rem;
  margin: 0 0 8px;
  color: var(--accent);
}

.error-page p {
  color: var(--muted);
  margin: 0 0 22px;
}

/* Footer */
.site-footer {
  background: #08080a;
  border-top: 1px solid var(--line);
  padding: 40px 0 28px;
}

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

.site-footer h3 {
  margin: 0 0 12px;
  font-size: 1rem;
}

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

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

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

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

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

.copyright {
  border-top: 1px solid var(--line);
  padding-top: 18px;
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
}

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

  .feature-row.reverse .feature-media {
    order: 0;
  }

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

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

  .hero-shot img,
  .feature-media img {
    max-height: 420px;
  }
}

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

  .nav {
    display: none;
    position: absolute;
    top: calc(100% + 1px);
    left: 0;
    right: 0;
    z-index: 120;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 12px;
    background: rgba(10, 10, 12, 0.98);
    border: 1px solid var(--line);
    border-radius: 12px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
  }

  .nav.open {
    display: flex;
  }

  .hero {
    padding: 32px 0 28px;
  }

  .section {
    padding: 40px 0;
  }

  .card-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

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

  .cta-box {
    padding: 22px 16px;
  }
}

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