:root {
  --bg: #0b0b0f;
  --bg-soft: #14141c;
  --bg-card: #1a1a24;
  --line: rgba(255, 255, 255, 0.08);
  --text: #f5f5f7;
  --muted: #a8a8b3;
  --accent: #ff3b5c;
  --accent-2: #ff7a3d;
  --grad: linear-gradient(135deg, #ff3b5c 0%, #ff7a3d 100%);
  --radius: 14px;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  --max: 1180px;
  --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;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: #ff8fa3;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #fff;
}

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 8px 12px;
  z-index: 1000;
}

.skip-link:focus {
  left: 12px;
  top: 12px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(11, 11, 15, 0.88);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}

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

.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, 59, 92, 0.14);
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  color: #fff;
  border-radius: 8px;
  cursor: pointer;
}

.menu-toggle .bar {
  display: block;
  width: 14px;
  height: 1.5px;
  margin: 2px auto;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.menu-toggle[aria-expanded="true"] .bar:nth-child(1) {
  transform: translateY(3.5px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .bar:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] .bar:nth-child(3) {
  transform: translateY(-3.5px) rotate(-45deg);
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding: 64px 0 48px;
  background:
    radial-gradient(ellipse 70% 60% at 80% 10%, rgba(255, 59, 92, 0.22), transparent 60%),
    radial-gradient(ellipse 50% 40% at 10% 80%, rgba(255, 122, 61, 0.12), transparent 55%),
    var(--bg);
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 59, 92, 0.12);
  color: #ffb3c1;
  font-size: 0.85rem;
  margin-bottom: 16px;
}

.hero h1 {
  margin: 0 0 14px;
  font-size: clamp(1.8rem, 3.4vw, 2.7rem);
  line-height: 1.25;
  letter-spacing: 0.01em;
}

.hero-lead {
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0 0 24px;
  max-width: 36em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 22px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

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

.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 8px 24px rgba(255, 59, 92, 0.35);
}

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

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

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: var(--muted);
  font-size: 0.9rem;
}

.hero-meta strong {
  color: #fff;
  display: block;
  font-size: 1.15rem;
}

.hero-visual {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
}

.hero-visual img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  max-height: 560px;
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 40%;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.75));
  pointer-events: none;
}

/* Sections */
section {
  padding: 56px 0;
}

.section-head {
  margin-bottom: 28px;
  max-width: 46em;
}

.section-head h2 {
  margin: 0 0 10px;
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
}

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

.alt {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent);
}

/* Cards / grids */
.feature-grid,
.cat-grid,
.shot-grid,
.guide-grid,
.faq-grid {
  display: grid;
  gap: 18px;
}

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

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

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

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

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

.card {
  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;
}

.card:hover {
  border-color: rgba(255, 59, 92, 0.45);
  transform: translateY(-2px);
}

.card-body {
  padding: 16px 18px 18px;
}

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

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

.card img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: top;
  max-height: 420px;
}

.card.wide img,
.shot-card img {
  aspect-ratio: 3 / 4;
  max-height: 380px;
}

.icon-num {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: var(--grad);
  color: #fff;
  font-weight: 700;
  margin-bottom: 12px;
}

/* Content prose for long SEO text */
.prose {
  color: var(--muted);
}

.prose h2,
.prose h3 {
  color: #fff;
  margin-top: 1.6em;
}

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

.prose ul,
.prose ol {
  padding-left: 1.2em;
  margin: 0 0 1em;
}

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

.prose strong {
  color: #fff;
}

.two-col {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 28px;
  align-items: start;
}

.sticky-side {
  position: sticky;
  top: 88px;
}

.side-box {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}

.side-box h3 {
  margin: 0 0 12px;
  font-size: 1rem;
}

.side-box ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.side-box li {
  margin-bottom: 8px;
}

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

.side-box a:hover {
  color: #fff;
}

.side-shot {
  margin-top: 16px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
}

.side-shot img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: top;
  max-height: 360px;
}

/* Steps */
.steps {
  display: grid;
  gap: 14px;
}

.step {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 14px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.step-num {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(255, 59, 92, 0.15);
  color: #ff8fa3;
  font-weight: 700;
}

.step h3 {
  margin: 0 0 4px;
  font-size: 1rem;
}

.step p {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

/* FAQ */
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.faq-item h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.faq-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

/* Page hero for subpages */
.page-hero {
  padding: 48px 0 24px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(ellipse 50% 80% at 0% 0%, rgba(255, 59, 92, 0.16), transparent 50%),
    var(--bg);
}

.page-hero h1 {
  margin: 0 0 10px;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

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

.breadcrumb {
  margin-bottom: 14px;
  font-size: 0.88rem;
  color: var(--muted);
}

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

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

.legal-content {
  padding: 40px 0 64px;
  max-width: 820px;
}

.legal-content h2 {
  margin-top: 1.8em;
  font-size: 1.25rem;
}

.legal-content p,
.legal-content li {
  color: var(--muted);
}

/* Error pages */
.error-page {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 48px 16px;
}

.error-page .code {
  font-size: clamp(4rem, 12vw, 7rem);
  font-weight: 800;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  margin-bottom: 8px;
}

.error-page h1 {
  margin: 0 0 12px;
}

.error-page p {
  color: var(--muted);
  margin: 0 0 24px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 40px 0 28px;
  background: #08080c;
  margin-top: 24px;
}

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

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 700;
  margin-bottom: 10px;
}

.footer-brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.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 h3 {
  margin: 0 0 12px;
  font-size: 0.98rem;
}

.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.86rem;
}

.keyword-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.keyword-cloud span {
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.82rem;
}

.cta-band {
  margin: 8px 0 0;
  padding: 28px;
  border-radius: 18px;
  background:
    linear-gradient(135deg, rgba(255, 59, 92, 0.18), rgba(255, 122, 61, 0.1)),
    var(--bg-card);
  border: 1px solid rgba(255, 59, 92, 0.28);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.cta-band h2 {
  margin: 0 0 6px;
  font-size: 1.35rem;
}

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

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

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

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

  .sticky-side {
    position: static;
  }

  .hero-visual img {
    max-height: 480px;
  }
}

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

  .nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 12px 16px 16px;
    background: rgba(11, 11, 15, 0.98);
    border-bottom: 1px solid var(--line);
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: 12px 14px;
  }

  .feature-grid,
  .faq-grid,
  .guide-grid,
  .cat-grid,
  .shot-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 36px 0 28px;
  }

  section {
    padding: 40px 0;
  }

  .hero-visual img,
  .card img,
  .side-shot img {
    max-height: none;
  }

  .footer-bottom {
    flex-direction: column;
  }
}