:root {
  --bg: #0a0a0c;
  --bg-soft: #121218;
  --bg-card: #1a1a22;
  --bg-elevated: #22222c;
  --text: #f2f2f5;
  --text-muted: #a0a0b0;
  --accent: #e63946;
  --accent-soft: #ff6b6b;
  --accent-dark: #b82a35;
  --line: rgba(255, 255, 255, 0.08);
  --gold: #f0c14b;
  --radius: 12px;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  --max: 1180px;
  --font-display: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-body: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  min-height: 100vh;
  background-image:
    radial-gradient(ellipse 80% 50% at 20% -10%, rgba(230, 57, 70, 0.18), transparent),
    radial-gradient(ellipse 60% 40% at 90% 10%, rgba(240, 193, 75, 0.08), transparent),
    linear-gradient(180deg, #0a0a0c 0%, #0e0e14 100%);
}

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 {
  list-style: none;
}

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  background: rgba(10, 10, 12, 0.88);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  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: #fff;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  object-fit: cover;
}

.brand span {
  background: linear-gradient(90deg, #fff, var(--accent-soft));
  -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: 0.95rem;
}

.nav a:hover,
.nav a.active {
  color: #fff;
  background: rgba(230, 57, 70, 0.15);
}

.menu-toggle {
  display: none;
  background: var(--bg-card);
  border: 1px solid var(--line);
  color: #fff;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 1.2rem;
}

/* Hero */
.hero {
  position: relative;
  min-height: clamp(420px, 72vh, 680px);
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(10, 10, 12, 0.25) 0%, rgba(10, 10, 12, 0.92) 78%, var(--bg) 100%),
    url("/featured.jpg") center/cover no-repeat;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 4rem 0 3rem;
  max-width: 720px;
}

.hero-badge {
  display: inline-block;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  background: rgba(230, 57, 70, 0.2);
  border: 1px solid rgba(230, 57, 70, 0.4);
  color: var(--accent-soft);
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4.5vw, 3rem);
  line-height: 1.25;
  margin-bottom: 1rem;
  font-weight: 800;
}

.hero p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
  max-width: 560px;
}

.cta-group {
  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: 10px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  box-shadow: 0 8px 24px rgba(230, 57, 70, 0.35);
}

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

.btn-ghost {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--line);
  color: #fff;
}

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

/* Sections */
.section {
  padding: 3.5rem 0;
}

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

.section-head h2 {
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  margin-bottom: 0.5rem;
}

.section-head p {
  color: var(--text-muted);
  max-width: 680px;
}

.section-alt {
  background: rgba(255, 255, 255, 0.02);
  border-block: 1px solid var(--line);
}

/* Category chips */
.cat-scroll {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.cat-chip {
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.cat-chip:hover,
.cat-chip.active {
  color: #fff;
  border-color: var(--accent);
  background: rgba(230, 57, 70, 0.15);
}

/* Grids */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

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

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

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

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(230, 57, 70, 0.35);
  box-shadow: var(--shadow);
}

.card-media {
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--bg-soft);
}

.card-media.landscape {
  aspect-ratio: 16 / 10;
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.card:hover .card-media img {
  transform: scale(1.04);
}

.card-body {
  padding: 0.95rem 1rem 1.1rem;
}

.card-body h3 {
  font-size: 1rem;
  margin-bottom: 0.35rem;
  line-height: 1.4;
}

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

.tag {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  background: rgba(230, 57, 70, 0.2);
  color: var(--accent-soft);
  margin-bottom: 0.45rem;
}

/* Feature list */
.feature-row {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: center;
}

.feature-row.reverse {
  grid-template-columns: 0.9fr 1.1fr;
}

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

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

.feature-text h2 {
  font-size: clamp(1.35rem, 2.8vw, 1.75rem);
  margin-bottom: 0.75rem;
}

.feature-text p {
  color: var(--text-muted);
  margin-bottom: 0.9rem;
}

.feature-text ul {
  margin: 0.75rem 0 1.25rem;
}

.feature-text li {
  position: relative;
  padding-left: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 0.45rem;
}

.feature-text li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* Article / long SEO */
.article {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: clamp(1.25rem, 3vw, 2.25rem);
}

.article h2 {
  font-size: 1.55rem;
  margin: 1.75rem 0 0.85rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--line);
}

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

.article h3 {
  font-size: 1.15rem;
  margin: 1.35rem 0 0.6rem;
  color: #fff;
}

.article p {
  color: var(--text-muted);
  margin-bottom: 1rem;
  text-align: justify;
}

.article strong {
  color: #fff;
  font-weight: 600;
}

.toc {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem 1.2rem;
  margin-bottom: 1.5rem;
}

.toc h3 {
  margin: 0 0 0.6rem;
  font-size: 1rem;
}

.toc ol {
  padding-left: 1.2rem;
  color: var(--text-muted);
}

.toc li {
  margin-bottom: 0.35rem;
}

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

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

/* FAQ */
.faq details {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.95rem 1.1rem;
  margin-bottom: 0.7rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  float: right;
  color: var(--accent-soft);
}

.faq details[open] summary::after {
  content: "–";
}

.faq details p {
  color: var(--text-muted);
  margin-top: 0.7rem;
  font-size: 0.95rem;
}

/* Page hero (inner pages) */
.page-hero {
  padding: 2.75rem 0 1.5rem;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(ellipse 70% 80% at 0% 0%, rgba(230, 57, 70, 0.12), transparent);
}

.page-hero h1 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  margin-bottom: 0.5rem;
}

.page-hero p {
  color: var(--text-muted);
  max-width: 640px;
}

.breadcrumb {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

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

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

.content-block {
  padding: 2.5rem 0 3.5rem;
}

.content-block .article p,
.legal p {
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.legal h2 {
  font-size: 1.25rem;
  margin: 1.75rem 0 0.7rem;
}

.legal h3 {
  font-size: 1.05rem;
  margin: 1.2rem 0 0.5rem;
}

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

.error-page .code {
  font-size: clamp(4rem, 12vw, 7rem);
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 0.5rem;
}

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

.error-page p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  max-width: 420px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  background: #07070a;
  padding: 2.5rem 0 1.5rem;
  margin-top: 1rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.footer-brand h3 {
  margin-bottom: 0.6rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.92rem;
}

.footer-col h4 {
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
}

.footer-col a {
  display: block;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 0.45rem;
}

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

.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 1.1rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Showcase strip */
.shot-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
}

.shot-strip .card-media {
  aspect-ratio: 9 / 16;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

/* Mobile bottom nav */
.mobile-nav {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 99;
  background: rgba(12, 12, 16, 0.96);
  border-top: 1px solid var(--line);
  backdrop-filter: blur(12px);
  padding: 0.4rem 0.5rem calc(0.4rem + env(safe-area-inset-bottom));
}

.mobile-nav ul {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  text-align: center;
}

.mobile-nav a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  color: var(--text-muted);
  font-size: 0.7rem;
  padding: 0.35rem 0.2rem;
}

.mobile-nav a.active,
.mobile-nav a:hover {
  color: var(--accent-soft);
}

.mobile-nav .ico {
  font-size: 1.05rem;
  line-height: 1;
}

/* Utilities */
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-2 { margin-bottom: 1rem; }
.text-muted { color: var(--text-muted); }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-content,
.section-head,
.card {
  animation: riseIn 0.6s ease both;
}

/* Responsive */
@media (max-width: 960px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .feature-row,
  .feature-row.reverse {
    grid-template-columns: 1fr;
  }

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

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

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

@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(12, 12, 16, 0.98);
    border-bottom: 1px solid var(--line);
    padding: 0.75rem;
    gap: 0.25rem;
  }

  .nav.open {
    display: flex;
  }

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

  .hero {
    min-height: 520px;
  }

  .hero-content {
    padding: 3rem 0 2rem;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
  }

  .card-body {
    padding: 0.7rem;
  }

  .card-body h3 {
    font-size: 0.88rem;
  }

  .card-body p {
    font-size: 0.78rem;
  }

  .mobile-nav {
    display: block;
  }

  body {
    padding-bottom: 68px;
  }

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

  .section {
    padding: 2.5rem 0;
  }
}

@media (max-width: 480px) {
  .container {
    width: min(100% - 1.25rem, var(--max));
  }

  .cta-group {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

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