:root {
  --bg: #0c0b12;
  --bg-soft: #15131f;
  --bg-card: #1c1830;
  --line: rgba(255, 255, 255, 0.08);
  --text: #f4f1fb;
  --muted: #b7b0c9;
  --accent: #ff6a3d;
  --accent-2: #ff3d8a;
  --accent-3: #7c5cff;
  --gold: #e8c17a;
  --radius: 14px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --max: 1120px;
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --display: "ZCOOL XiaoWei", "Noto Serif SC", serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(255, 61, 138, 0.18), transparent 60%),
    radial-gradient(900px 480px at 90% 0%, rgba(124, 92, 255, 0.16), transparent 55%),
    linear-gradient(180deg, #100e18 0%, var(--bg) 40%, #09080e 100%);
  line-height: 1.75;
  min-height: 100vh;
}

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

a {
  color: #ff9d7a;
  text-decoration: none;
}

a:hover {
  color: #fff;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(12, 11, 18, 0.82);
  border-bottom: 1px solid var(--line);
}

.nav {
  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: var(--text);
  font-weight: 700;
  letter-spacing: 0.02em;
}

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

.brand span {
  font-family: var(--display);
  font-size: 1.25rem;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

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

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

.menu-btn {
  display: none;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  color: var(--text);
  border-radius: 10px;
  padding: 0.45rem 0.7rem;
  cursor: pointer;
}

.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-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 106, 61, 0.35);
  background: rgba(255, 106, 61, 0.08);
  color: #ffb694;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.hero h1 {
  font-family: var(--display);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.25;
  margin: 0 0 1rem;
  background: linear-gradient(120deg, #fff 20%, #ffb4cf 55%, #ff9a6b 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

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

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.2rem;
}

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

.btn-primary {
  color: #1a0f12;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  box-shadow: 0 10px 30px rgba(255, 61, 138, 0.28);
}

.btn-primary:hover {
  color: #1a0f12;
  transform: translateY(-1px);
}

.btn-ghost {
  color: var(--text);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.btn-ghost:hover {
  border-color: rgba(255, 255, 255, 0.25);
  color: #fff;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.4rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.hero-visual {
  position: relative;
}

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

.hero-float {
  position: absolute;
  left: -0.8rem;
  bottom: -0.8rem;
  width: 46%;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

section {
  padding: 2.6rem 0;
}

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

.section-head h2 {
  font-family: var(--display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin: 0 0 0.55rem;
}

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

.prose {
  color: #ddd7eb;
}

.prose p {
  margin: 0 0 1rem;
}

.prose h3 {
  margin: 1.8rem 0 0.8rem;
  font-size: 1.25rem;
}

.prose h4 {
  margin: 1.4rem 0 0.6rem;
  font-size: 1.05rem;
  color: #ffe1d2;
}

.prose ul,
.prose ol {
  margin: 0 0 1rem;
  padding-left: 1.2rem;
  color: var(--muted);
}

.prose li {
  margin: 0.35rem 0;
}

.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: 1rem;
}

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

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

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

.feature,
.shot,
.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;
}

.feature,
.card {
  padding: 1.2rem;
}

.feature h3,
.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.08rem;
}

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

.shot img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: top;
  background: #111;
}

.shot figcaption {
  padding: 0.75rem 0.9rem 0.95rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.shot figcaption strong {
  display: block;
  color: var(--text);
  margin-bottom: 0.2rem;
}

.media-row {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 1.4rem;
  align-items: start;
  margin: 1.4rem 0;
}

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

.toc {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.7rem;
  margin: 1.2rem 0 0.4rem;
}

.toc a {
  display: block;
  padding: 0.8rem 0.9rem;
  border-radius: 12px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  color: var(--text);
  font-size: 0.92rem;
}

.toc a:hover {
  border-color: rgba(255, 106, 61, 0.45);
}

.steps {
  counter-reset: step;
  display: grid;
  gap: 0.9rem;
}

.step {
  position: relative;
  padding: 1rem 1rem 1rem 3.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.02);
}

.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0.9rem;
  top: 1rem;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-3));
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
}

.faq details {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.9rem 1rem;
  margin-bottom: 0.7rem;
  background: rgba(255, 255, 255, 0.02);
}

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

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

.page-hero {
  padding: 2.4rem 0 1rem;
}

.page-hero h1 {
  font-family: var(--display);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  margin: 0 0 0.7rem;
}

.page-hero p {
  margin: 0;
  color: var(--muted);
  max-width: 46em;
}

.legal {
  padding-bottom: 3rem;
}

.legal .card {
  margin-bottom: 1rem;
}

.breadcrumb {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 0.8rem;
}

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

.site-footer {
  margin-top: 2rem;
  border-top: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.28);
  padding: 2rem 0 1.4rem;
}

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

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

.site-footer li {
  margin: 0.35rem 0;
}

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

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

.copy {
  margin-top: 1.4rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: #8f88a3;
  font-size: 0.85rem;
}

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

.error-page h1 {
  font-family: var(--display);
  font-size: clamp(2.4rem, 8vw, 4.5rem);
  margin: 0 0 0.6rem;
  background: linear-gradient(120deg, #fff, #ff8fb5);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

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

.related {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1rem;
}

.related a {
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.88rem;
}

.related a:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.28);
}

@media (max-width: 960px) {
  .hero-grid,
  .media-row,
  .footer-grid,
  .grid-4,
  .toc {
    grid-template-columns: 1fr 1fr;
  }

  .grid-3 {
    grid-template-columns: 1fr 1fr;
  }

  .hero-float {
    width: 42%;
  }
}

@media (max-width: 760px) {
  .menu-btn {
    display: inline-flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    left: 1rem;
    right: 1rem;
    top: 68px;
    flex-direction: column;
    gap: 0;
    background: #171522;
    border: 1px solid var(--line);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    display: block;
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--line);
  }

  .nav-links li:last-child a {
    border-bottom: 0;
  }

  .hero-grid,
  .media-row,
  .footer-grid,
  .grid-2,
  .grid-3,
  .grid-4,
  .toc {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 1.8rem;
  }

  .hero-float {
    position: static;
    width: 100%;
    margin-top: 0.8rem;
  }

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