:root {
  --bg: #0a0a0c;
  --bg-elevated: #141418;
  --bg-card: #1a1a20;
  --text: #f2f2f4;
  --text-muted: #9a9aa3;
  --accent: #e11d48;
  --accent-soft: #fb7185;
  --accent-dark: #be123c;
  --border: #2a2a32;
  --gradient: linear-gradient(135deg, #e11d48 0%, #f97316 100%);
  --radius: 12px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
  --max: 1120px;
  --font: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  min-height: 100vh;
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(225, 29, 72, 0.18), transparent),
    radial-gradient(ellipse 60% 40% at 100% 50%, rgba(249, 115, 22, 0.06), transparent);
}

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

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

a:hover {
  color: #fff;
}

ul, ol {
  padding-left: 1.25rem;
}

.container {
  width: min(100% - 2rem, 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(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: #fff;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

.logo img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: cover;
}

.logo span {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.nav a {
  color: var(--text-muted);
  padding: 0.45rem 0.75rem;
  border-radius: 8px;
  font-size: 0.92rem;
  white-space: nowrap;
}

.nav a:hover,
.nav a.active {
  color: #fff;
  background: rgba(225, 29, 72, 0.15);
}

.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  color: #fff;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1.25rem;
}

/* Hero */
.hero {
  padding: 3.5rem 0 2.5rem;
  position: relative;
  overflow: hidden;
}

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

.hero-badge {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--accent-soft);
  border: 1px solid rgba(225, 29, 72, 0.4);
  background: rgba(225, 29, 72, 0.1);
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.65rem);
  line-height: 1.25;
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: 0.01em;
}

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

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.75rem 1.35rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 8px 24px rgba(225, 29, 72, 0.35);
}

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

.btn-ghost {
  background: transparent;
  color: #fff;
  border: 1px solid var(--border);
}

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

.hero-visual {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  animation: fadeUp 0.8s ease both;
}

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

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 10, 12, 0.75) 0%, transparent 45%);
  pointer-events: none;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes softPulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

/* Sections */
.section {
  padding: 3rem 0;
}

.section-alt {
  background: rgba(20, 20, 24, 0.55);
  border-block: 1px solid var(--border);
}

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

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  margin-bottom: 0.5rem;
}

.section-head p {
  color: var(--text-muted);
  max-width: 42em;
}

.category-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.category-tabs a {
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.88rem;
}

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

/* Grids */
.shot-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.shot-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.shot-card:hover {
  transform: translateY(-4px);
  border-color: rgba(225, 29, 72, 0.5);
}

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

.shot-card figcaption {
  padding: 0.75rem 0.9rem 1rem;
}

.shot-card h3 {
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
  font-weight: 600;
}

.shot-card p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
  margin-bottom: 2.5rem;
}

.feature-row:nth-child(even) {
  direction: rtl;
}

.feature-row:nth-child(even) > * {
  direction: ltr;
}

.feature-row img {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  object-position: top;
}

.feature-copy h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.feature-copy p {
  color: var(--text-muted);
  margin-bottom: 0.85rem;
}

.feature-copy ul {
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.feature-copy li {
  margin-bottom: 0.35rem;
}

/* Article / SEO content */
.article {
  max-width: 760px;
}

.article h2 {
  font-family: var(--font-display);
  font-size: 1.45rem;
  margin: 2rem 0 0.85rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
}

.article h2:first-child {
  border-top: none;
  margin-top: 0;
  padding-top: 0;
}

.article h3 {
  font-size: 1.1rem;
  margin: 1.35rem 0 0.6rem;
  color: #fff;
}

.article p {
  margin-bottom: 1rem;
  color: #d4d4d8;
}

.article ul,
.article ol {
  margin-bottom: 1rem;
  color: #d4d4d8;
}

.article li {
  margin-bottom: 0.4rem;
}

.toc {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
}

.toc h2 {
  font-size: 1rem;
  margin: 0 0 0.75rem;
  border: none;
  padding: 0;
}

.toc ol {
  margin: 0;
  color: var(--text-muted);
}

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

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

.internal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 1.5rem 0;
}

.internal-links a {
  padding: 0.45rem 0.85rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.88rem;
}

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

/* Page hero for inner pages */
.page-hero {
  padding: 2.5rem 0 1.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  margin-bottom: 0.5rem;
}

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

.content-page {
  padding-bottom: 3.5rem;
}

.content-page .prose {
  max-width: 760px;
}

.content-page .prose h2 {
  font-size: 1.25rem;
  margin: 1.75rem 0 0.75rem;
}

.content-page .prose p,
.content-page .prose li {
  color: #d4d4d8;
  margin-bottom: 0.85rem;
}

.content-page .prose ul {
  margin-bottom: 1rem;
}

/* Error pages */
.error-page {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 3rem 1rem;
}

.error-page .code {
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 7rem);
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  margin-bottom: 0.75rem;
  animation: softPulse 2.5s ease infinite;
}

.error-page h1 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.error-page p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  max-width: 28em;
  margin-inline: auto;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  background: #070709;
  padding: 2.5rem 0 1.5rem;
  margin-top: 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-brand {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.footer-brand img {
  width: 40px;
  height: 40px;
  border-radius: 8px;
}

.footer-brand strong {
  display: block;
  margin-bottom: 0.35rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.footer-col h3 {
  font-size: 0.95rem;
  margin-bottom: 0.85rem;
  color: #fff;
}

.footer-col a {
  display: block;
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-bottom: 0.45rem;
}

.footer-col a:hover {
  color: var(--accent-soft);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.breadcrumb {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

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

.breadcrumb span {
  margin: 0 0.35rem;
  opacity: 0.5;
}

.highlight-box {
  background: var(--bg-elevated);
  border-left: 3px solid var(--accent);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 1.25rem 0;
  color: #d4d4d8;
}

/* Mobile */
@media (max-width: 960px) {
  .shot-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-grid,
  .feature-row,
  .feature-row:nth-child(even),
  .footer-grid {
    grid-template-columns: 1fr;
    direction: ltr;
  }

  .hero-visual img {
    max-height: 420px;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(14, 14, 18, 0.98);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1rem 1rem;
    gap: 0.25rem;
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: 0.75rem 1rem;
  }

  .header-inner {
    position: relative;
  }

  .hero {
    padding: 2rem 0 1.5rem;
  }

  .section {
    padding: 2rem 0;
  }

  .shot-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.65rem;
  }

  .shot-card figcaption {
    padding: 0.55rem 0.65rem 0.75rem;
  }

  .shot-card h3 {
    font-size: 0.85rem;
  }

  .shot-card p {
    display: none;
  }
}

@media (max-width: 420px) {
  .container {
    width: min(100% - 1.25rem, var(--max));
  }

  .logo span {
    font-size: 0.95rem;
  }
}