:root {
  --bg: #0a0a0b;
  --bg-soft: #121214;
  --bg-card: #1a1a1e;
  --text: #f2f2f3;
  --muted: #a3a3a8;
  --line: #2a2a30;
  --accent: #c41e2a;
  --accent-hover: #e02836;
  --neon: #7cff4a;
  --radius: 10px;
  --max: 1120px;
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(196, 30, 42, 0.18), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, rgba(124, 255, 74, 0.06), transparent 55%),
    linear-gradient(180deg, #0d0d10 0%, var(--bg) 40%, #080809 100%);
  color: var(--text);
  line-height: 1.75;
  min-height: 100vh;
}

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

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

a:hover {
  color: #a8ff7a;
}

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(10, 10, 11, 0.86);
  border-bottom: 1px solid var(--line);
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  object-fit: cover;
}

.brand span {
  font-family: var(--display);
  font-size: 1.15rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav a {
  color: var(--muted);
  font-size: 0.95rem;
}

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

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-soft);
  color: var(--text);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--text);
}

/* Hero */
.hero {
  padding: 3.5rem 0 2.5rem;
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.5rem;
  align-items: center;
}

.hero-copy h1 {
  margin: 0 0 1rem;
  font-family: var(--display);
  font-size: clamp(1.8rem, 4vw, 2.75rem);
  line-height: 1.25;
  letter-spacing: 0.02em;
}

.hero-copy .lead {
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0 0 1.5rem;
  max-width: 36em;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.8rem 1.35rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #8f101a);
  color: #fff;
}

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

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

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

.hero-visual {
  position: relative;
}

.hero-visual img {
  width: 100%;
  max-width: 360px;
  margin-inline: auto;
  border-radius: 18px;
  border: 1px solid var(--line);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  animation: floatY 5s ease-in-out infinite;
}

.hero-badge {
  position: absolute;
  left: 8%;
  bottom: 8%;
  padding: 0.45rem 0.8rem;
  background: rgba(12, 12, 14, 0.9);
  border: 1px solid rgba(124, 255, 74, 0.35);
  border-radius: 8px;
  font-size: 0.85rem;
  color: var(--neon);
  animation: fadeUp 0.8s ease both 0.3s;
}

@keyframes floatY {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Sections */
.section {
  padding: 3.25rem 0;
  border-bottom: 1px solid var(--line);
}

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

.section-head h2 {
  margin: 0 0 0.6rem;
  font-family: var(--display);
  font-size: clamp(1.45rem, 2.5vw, 1.9rem);
}

.section-head p {
  margin: 0;
  color: var(--muted);
  max-width: 48em;
}

.prose p {
  margin: 0 0 1.1rem;
  color: #d6d6da;
}

.prose h3 {
  margin: 1.8rem 0 0.8rem;
  font-size: 1.2rem;
  color: #fff;
}

.prose ul {
  margin: 0 0 1.2rem;
  padding-left: 1.2rem;
  color: #d6d6da;
}

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

.feature-grid,
.shot-grid,
.cat-grid {
  display: grid;
  gap: 1.25rem;
}

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

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

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

.feature-item,
.content-block {
  background: linear-gradient(180deg, rgba(26, 26, 30, 0.95), rgba(18, 18, 20, 0.95));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.feature-item h3,
.content-block h3 {
  margin: 0 0 0.55rem;
  font-size: 1.05rem;
}

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

.shot-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.shot-item:hover {
  border-color: rgba(196, 30, 42, 0.55);
  transform: translateY(-3px);
}

.shot-item img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: top;
  background: #000;
}

.shot-item figcaption {
  padding: 0.75rem 0.85rem 0.95rem;
  font-size: 0.88rem;
  color: var(--muted);
}

.phone-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.phone-row figure {
  margin: 0;
  text-align: center;
}

.phone-row img {
  margin-inline: auto;
  width: min(100%, 280px);
  border-radius: 16px;
  border: 1px solid var(--line);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
}

.phone-row figcaption {
  margin-top: 0.7rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.75rem;
  align-items: start;
}

.split img {
  border-radius: 14px;
  border: 1px solid var(--line);
}

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

.toc a {
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.85rem;
  background: rgba(255, 255, 255, 0.02);
}

.toc a:hover {
  color: var(--text);
  border-color: var(--accent);
}

.page-hero {
  padding: 2.5rem 0 1.5rem;
}

.page-hero h1 {
  margin: 0 0 0.75rem;
  font-family: var(--display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

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

.legal {
  padding-bottom: 3rem;
}

.legal h2 {
  margin: 2rem 0 0.75rem;
  font-size: 1.2rem;
}

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

.error-page h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-family: var(--display);
}

.error-page p {
  color: var(--muted);
  margin: 0 0 1.5rem;
}

/* Footer */
.site-footer {
  padding: 2.5rem 0 2rem;
  background: #070708;
  border-top: 1px solid var(--line);
}

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

.site-footer h3 {
  margin: 0 0 0.8rem;
  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;
}

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

.copyright {
  margin-top: 1.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: #777;
  font-size: 0.85rem;
  text-align: center;
}

.age-note {
  display: inline-block;
  margin-top: 0.75rem;
  padding: 0.25rem 0.55rem;
  border: 1px solid rgba(196, 30, 42, 0.5);
  color: #ff8e96;
  border-radius: 6px;
  font-size: 0.8rem;
}

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

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

  .nav-toggle {
    display: inline-block;
  }

  .nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 68px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(10, 10, 11, 0.98);
    border-bottom: 1px solid var(--line);
    padding: 0.5rem 1rem 1rem;
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: 0.75rem 0.4rem;
    border-bottom: 1px solid var(--line);
  }

  .header-inner {
    position: relative;
  }

  .hero {
    padding-top: 2rem;
  }

  .hero-visual img {
    max-width: 280px;
  }
}

@media (max-width: 560px) {
  .shot-grid {
    grid-template-columns: 1fr;
    gap: 1.15rem;
  }

  .shot-item {
    max-width: 420px;
    margin-inline: auto;
    width: 100%;
  }

  .shot-item img {
    aspect-ratio: auto;
    width: 100%;
    height: auto;
    object-fit: contain;
    object-position: top;
    background: #000;
  }

  .shot-item figcaption {
    font-size: 0.95rem;
    text-align: center;
  }

  .cta-row {
    width: 100%;
  }

  .cta-row .btn {
    flex: 1 1 auto;
  }
}