:root {
  --bg: #F5F1EA;
  --bg-deep: #EBE4DC;
  --card: #FFFFFF;
  --text: #2D2A2C;
  --muted: rgba(45, 42, 44, 0.65);
  --primary: #FF5A3D;
  --primary-light: #FF8A5B;
  --secondary: #0A5C5B;
  --accent: #E8B93A;
  --border: rgba(45, 42, 44, 0.06);
  --shadow-sm: 0 2px 8px rgba(45, 42, 44, 0.04);
  --shadow-lg: 0 16px 50px rgba(45, 42, 44, 0.08);
  --radius: 24px;
  --font: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
}

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

body {
  font-family: var(--font);
  background-color: var(--bg);
  background-image: radial-gradient(rgba(45, 42, 44, 0.045) 1px, transparent 1px);
  background-size: 28px 28px;
  color: var(--text);
  overflow-x: hidden;
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

.section {
  padding: 100px 0;
  position: relative;
}

.section:nth-child(even) {
  background: var(--bg-deep);
}

/* ========== Header ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(245, 241, 234, 0.88);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
  font-size: 1.35rem;
  text-decoration: none;
  color: var(--text);
  letter-spacing: -0.03em;
  transition: opacity 0.2s;
}

.logo:hover { opacity: 0.8; }

.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  box-shadow: 0 4px 16px rgba(255, 90, 61, 0.35);
  position: relative;
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.logo:hover .logo-icon {
  transform: rotate(-8deg) scale(1.05);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  transition: color 0.25s;
  letter-spacing: 0.02em;
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
  transition: width 0.32s cubic-bezier(0.65, 0, 0.35, 1);
}

.main-nav a:hover {
  color: var(--primary);
}

.main-nav a:hover::after {
  width: 100%;
}

.nav-cta {
  padding: 10px 26px;
  border-radius: 50px;
  color: #fff !important;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  box-shadow: 0 4px 18px rgba(255, 90, 61, 0.35);
  transition: transform 0.25s, box-shadow 0.25s;
}

.nav-cta::after { display: none; }

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 90, 61, 0.45);
  color: #fff;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: none;
  background: transparent;
  cursor: pointer;
  position: relative;
  z-index: 100;
}

.menu-toggle::before,
.menu-toggle::after {
  content: '';
  position: absolute;
  left: 12px;
  right: 12px;
  height: 2px;
  background: var(--text);
  transition: background 0.2s;
}

.menu-toggle::before {
  top: 13px;
  box-shadow: 0 9px 0 var(--text);
}

.menu-toggle::after {
  top: 31px;
}

/* ========== Hero ========== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 72px;
  background:
    radial-gradient(80% 60% at 85% 15%, rgba(255, 90, 61, 0.12), transparent 60%),
    radial-gradient(70% 50% at 15% 90%, rgba(10, 92, 91, 0.1), transparent 60%),
    var(--bg);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  right: -8%;
  top: 50%;
  transform: translateY(-50%);
  width: 46vw;
  height: 46vw;
  max-width: 560px;
  max-height: 560px;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, transparent 57%, rgba(255, 90, 61, 0.22) 59%, transparent 64%),
    radial-gradient(circle at center, transparent 37%, rgba(10, 92, 91, 0.1) 39%, transparent 44%);
  pointer-events: none;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  top: 18%;
  left: 52%;
  width: 20px;
  height: 20px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow:
    40px 60px 0 rgba(255, 90, 61, 0.25),
    -20px 110px 0 rgba(10, 92, 91, 0.18),
    90px 180px 0 rgba(255, 90, 61, 0.15);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  max-width: 720px;
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 6px 18px;
  border-radius: 50px;
  margin-bottom: 20px;
  background: rgba(255, 90, 61, 0.12);
  color: var(--primary);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(2.8rem, 6vw, 5.4rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin-bottom: 12px;
  color: var(--text);
  position: relative;
}

.hero h1::after {
  content: '';
  display: block;
  width: 140px;
  height: 10px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--primary), var(--accent), rgba(255, 90, 61, 0));
  border-radius: 12px;
}

.hero p {
  font-size: 1.15rem;
  color: var(--text);
  opacity: 0.65;
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-image {
  position: relative;
  z-index: 1;
  border-radius: 32px;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(45, 42, 44, 0.12);
  transform: rotate(2deg) translateX(-10px);
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.hero-image:hover {
  transform: rotate(0deg) translateX(0);
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: transform 0.25s, box-shadow 0.25s, background 0.25s;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  box-shadow: 0 6px 20px rgba(255, 90, 61, 0.35);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(255, 90, 61, 0.45);
}

.btn-outline {
  background: transparent;
  border: 2px solid rgba(10, 92, 91, 0.45);
  color: var(--secondary);
}

.btn-outline:hover {
  border-color: var(--secondary);
  background: rgba(10, 92, 91, 0.07);
  transform: translateY(-3px);
}

/* ========== Section labels ========== */
.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  margin-bottom: 14px;
  text-transform: uppercase;
  color: var(--primary);
  background: rgba(255, 90, 61, 0.1);
  padding: 5px 16px;
  border-radius: 30px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 16px;
  color: var(--text);
  position: relative;
}

.section-desc {
  max-width: 600px;
  opacity: 0.65;
  margin-bottom: 48px;
  font-size: 1.05rem;
  line-height: 1.75;
}

/* ========== Cards Grid ========== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}

.category-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 32px 28px;
  border: 1px solid var(--border);
  position: relative;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.4s;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity 0.3s;
}

.category-card::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 48px;
  height: 48px;
  background: linear-gradient(225deg, transparent 50%, rgba(255, 90, 61, 0.07) 50%);
  border-radius: 0 0 0 24px;
  transition: background 0.3s;
}

.category-card:nth-child(odd) {
  transform: rotate(-0.6deg);
}

.category-card:nth-child(even) {
  transform: rotate(0.6deg);
}

.category-card:hover {
  transform: rotate(0deg) translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.category-card:hover::before {
  opacity: 1;
}

.category-card:hover::after {
  background: linear-gradient(225deg, transparent 50%, rgba(255, 90, 61, 0.15) 50%);
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.6rem;
  background: rgba(10, 92, 91, 0.1);
  color: var(--secondary);
  transition: transform 0.3s, background 0.3s;
}

.category-card:hover .card-icon {
  transform: scale(1.08);
  background: rgba(255, 90, 61, 0.12);
  color: var(--primary);
}

.card-link {
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  transition: gap 0.25s, color 0.25s;
}

.card-link:hover {
  gap: 12px;
  color: var(--secondary);
}

/* ========== Feature Block ========== */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.feature-image {
  border-radius: 32px;
  overflow: hidden;
  position: relative;
  box-shadow: 0 24px 60px rgba(45, 42, 44, 0.1);
}

.feature-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 90, 61, 0.12), transparent 55%);
  border-radius: 32px;
}

.feature-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.feature-image:hover img {
  transform: scale(1.03);
}

.feature-text {
  position: relative;
  z-index: 1;
}

.feature-list {
  list-style: none;
  margin-top: 24px;
}

.feature-list li {
  padding: 12px 0;
  display: flex;
  align-items: center;
  gap: 14px;
  border-bottom: 1px dashed rgba(45, 42, 44, 0.12);
  font-weight: 500;
}

.feature-list li:last-child {
  border-bottom: none;
}

.feature-list li::before {
  content: '';
  width: 10px;
  height: 10px;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(255, 90, 61, 0.14);
}

/* ========== Stats Bar ========== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item {
  padding: 40px 24px;
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: transform 0.3s, box-shadow 0.3s;
}

.stat-item::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 4px 4px 0 0;
  transition: width 0.35s;
}

.stat-item:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

.stat-item:hover::before {
  width: 80%;
}

.stat-number {
  font-size: clamp(2.4rem, 4vw, 3.4rem);
  font-weight: 900;
  letter-spacing: -0.05em;
  line-height: 1;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-feature-settings: 'tnum';
}

.stat-label {
  font-size: 0.86rem;
  opacity: 0.6;
  margin-top: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ========== Content Wall ========== */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}

.content-wall-item {
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.4s;
}

.content-wall-item:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.content-wall-item:hover img {
  transform: scale(1.05);
}

.content-wall-body {
  padding: 24px;
  position: relative;
}

.content-wall-body::before {
  content: '#';
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 8px;
}

.content-wall-item:nth-child(2) .content-wall-body::before { content: 'MEDIA'; color: var(--secondary); }
.content-wall-item:nth-child(3) .content-wall-body::before { content: 'ALERT'; color: var(--accent); }
.content-wall-item:nth-child(4) .content-wall-body::before { content: 'CASE'; color: var(--primary); }
.content-wall-item:nth-child(5) .content-wall-body::before { content: 'DATA'; color: var(--secondary); }
.content-wall-item:nth-child(6) .content-wall-body::before { content: 'WATCH'; color: var(--accent); }

.content-wall-body h3 {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
  line-height: 1.4;
}

.content-wall-body p {
  font-size: 0.95rem;
  opacity: 0.6;
  line-height: 1.65;
}

/* ========== FAQ ========== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  margin-bottom: 12px;
  overflow: hidden;
  cursor: pointer;
  transition: box-shadow 0.3s, background 0.3s;
}

.faq-item:hover {
  box-shadow: 0 8px 24px rgba(45, 42, 44, 0.06);
}

.faq-item .faq-question {
  padding: 20px 24px;
  font-weight: 700;
  font-size: 1.05rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color 0.3s;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.6rem;
  font-weight: 400;
  color: var(--primary);
  transition: transform 0.3s, color 0.3s;
}

.faq-item .faq-answer {
  padding: 0 24px 24px;
  display: none;
  font-size: 0.95rem;
  line-height: 1.7;
  opacity: 0.75;
}

.faq-item.open {
  background: linear-gradient(135deg, var(--secondary), #0F7674);
  color: #fff;
}

.faq-item.open .faq-question {
  color: #fff;
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
  color: #fff;
}

.faq-item.open .faq-answer {
  display: block;
  color: #fff;
  opacity: 0.85;
}

/* ========== CTA Banner ========== */
.cta-banner {
  padding: 72px 48px;
  text-align: center;
  border-radius: 36px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light), var(--accent));
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(255, 90, 61, 0.25);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -15%;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -35%;
  left: -10%;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.09);
}

.cta-banner h2 {
  color: #fff;
  font-weight: 900;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.02em;
  position: relative;
  z-index: 1;
  margin-bottom: 16px;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.14);
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.18);
}

/* ========== Footer ========== */
.site-footer {
  padding: 72px 0 28px;
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.site-footer .container {
  position: relative;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand p {
  opacity: 0.6;
  font-size: 0.92rem;
  max-width: 260px;
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 800;
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}

.footer-col a {
  display: block;
  text-decoration: none;
  color: var(--text);
  opacity: 0.65;
  padding: 6px 0;
  font-size: 0.92rem;
  transition: color 0.2s, opacity 0.2s, padding-left 0.2s;
}

.footer-col a:hover {
  opacity: 1;
  color: var(--primary);
  padding-left: 6px;
}

.footer-bottom {
  border-top: 1px solid rgba(45, 42, 44, 0.08);
  margin-top: 56px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.55;
  letter-spacing: 0.03em;
}

/* ========== Utilities ========== */
.text-accent {
  color: var(--primary);
}

.text-center {
  text-align: center;
}

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.68;
  font-size: 1.05rem;
  line-height: 1.75;
}

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* ========== Responsive ========== */
@media (max-width: 992px) {
  .hero::before {
    width: 60vw;
    height: 60vw;
    max-width: 400px;
    max-height: 400px;
  }

  .hero::after {
    display: none;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 72px 0;
  }

  .header-inner {
    height: 64px;
  }

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    width: 100%;
    background: rgba(245, 241, 234, 0.98);
    padding: 28px 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 16px 40px rgba(45, 42, 44, 0.08);
  }

  .main-nav.open a {
    font-size: 1rem;
  }

  .main-nav.open .nav-cta {
    text-align: center;
  }

  .hero {
    min-height: auto;
    padding: 84px 0 72px;
  }

  .hero h1 {
    font-size: 2.6rem;
  }

  .hero-image {
    margin-top: 40px;
    width: 90%;
  }

  .feature-block {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .cta-banner {
    padding: 56px 24px;
    border-radius: 28px;
  }
}

@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .hero-buttons .btn {
    width: 100%;
    justify-content: center;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero p {
    font-size: 1rem;
  }

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

  .section-title {
    font-size: 1.9rem;
  }

  .cta-banner {
    padding: 48px 20px;
  }

  .feature-block {
    gap: 28px;
  }

  .stat-item {
    padding: 28px 16px;
  }
}