/* 南宫导航 - 智能商业解决方案 */
/* 视觉风格：野兽派+新拟态+大胆渐变流体 */

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  background: #0d0b1a;
  color: #f0e9e1;
  line-height: 1.6;
  overflow-x: hidden;
}

/* 渐变流体背景 */
body::before {
  content: "";
  position: fixed;
  top: -30%;
  left: -20%;
  width: 140%;
  height: 140%;
  background: radial-gradient(circle at 20% 40%, rgba(255, 90, 40, 0.25) 0%, transparent 50%),
              radial-gradient(circle at 80% 70%, rgba(0, 255, 200, 0.15) 0%, transparent 50%),
              radial-gradient(circle at 50% 100%, rgba(255, 200, 50, 0.1) 0%, transparent 40%);
  z-index: -2;
  pointer-events: none;
  animation: fluidShift 20s ease-in-out infinite alternate;
}

@keyframes fluidShift {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(3%, 2%) scale(1.05); }
}

/* 纹理噪点 */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  z-index: -1;
  pointer-events: none;
  opacity: 0.6;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px) saturate(1.2);
  background: rgba(13, 11, 26, 0.7);
  border-bottom: 1px solid rgba(255, 90, 40, 0.25);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  flex-wrap: wrap;
  gap: 12px;
}

.logo {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: #ff5a28;
  text-shadow: 0 0 20px rgba(255, 90, 40, 0.4), 2px 2px 0 #0d0b1a;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: transform 0.2s ease;
}

.logo:hover {
  transform: scale(1.02);
}

.logo span {
  color: #00ffc8;
  text-shadow: 0 0 20px rgba(0, 255, 200, 0.3);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.main-nav a {
  color: #c8bfb4;
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  padding: 8px 16px;
  border-radius: 40px;
  transition: all 0.25s ease;
  position: relative;
  letter-spacing: 0.02em;
}

.main-nav a:hover {
  color: #ff5a28;
  background: rgba(255, 90, 40, 0.1);
  text-shadow: 0 0 12px rgba(255, 90, 40, 0.3);
}

.main-nav a::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: #ff5a28;
  transition: width 0.3s ease, left 0.3s ease;
}

.main-nav a:hover::after {
  width: 60%;
  left: 20%;
}

.nav-cta {
  background: #ff5a28;
  color: #0d0b1a !important;
  font-weight: 700 !important;
  padding: 10px 24px !important;
  border-radius: 40px !important;
  box-shadow: 0 4px 20px rgba(255, 90, 40, 0.4);
  transition: all 0.25s ease !important;
}

.nav-cta:hover {
  background: #ff703f !important;
  box-shadow: 0 6px 28px rgba(255, 90, 40, 0.6) !important;
  transform: translateY(-2px);
  color: #0d0b1a !important;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
  transition: background 0.2s;
}

.menu-toggle span {
  display: block;
  width: 28px;
  height: 3px;
  background: #f0e9e1;
  border-radius: 4px;
  transition: all 0.3s ease;
}

.menu-toggle:hover span {
  background: #ff5a28;
}

/* ============ HERO ============ */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 80px 0 60px;
  min-height: 80vh;
  position: relative;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.hero-eyebrow {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: #00ffc8;
  font-weight: 600;
  text-shadow: 0 0 20px rgba(0, 255, 200, 0.2);
  display: inline-block;
  padding: 6px 16px;
  border: 1px solid rgba(0, 255, 200, 0.3);
  border-radius: 40px;
  width: fit-content;
  backdrop-filter: blur(4px);
}

.hero-content h1 {
  font-size: clamp(2.8rem, 8vw, 5.2rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: #f0e9e1;
  text-shadow: 4px 4px 0 #0d0b1a, 0 0 40px rgba(255, 90, 40, 0.15);
}

.hero-content h1 .highlight {
  color: #ff5a28;
  text-shadow: 0 0 30px rgba(255, 90, 40, 0.3);
}

.hero-content p {
  font-size: 1.2rem;
  color: #b0a79c;
  max-width: 520px;
  line-height: 1.7;
  font-weight: 350;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.hero-image::before {
  content: "";
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 90, 40, 0.2), transparent 70%);
  animation: pulseGlow 4s ease-in-out infinite alternate;
}

@keyframes pulseGlow {
  0% { transform: scale(0.9); opacity: 0.6; }
  100% { transform: scale(1.2); opacity: 1; }
}

.hero-image svg, .hero-image img {
  width: 100%;
  max-width: 480px;
  height: auto;
  filter: drop-shadow(0 20px 60px rgba(255, 90, 40, 0.2));
  clip-path: polygon(10% 0, 100% 5%, 95% 90%, 0 100%);
  transition: clip-path 0.6s ease;
}

.hero-image:hover img {
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 60px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  border: none;
  cursor: pointer;
  letter-spacing: 0.02em;
}

.btn-primary {
  background: #ff5a28;
  color: #0d0b1a;
  box-shadow: 0 4px 24px rgba(255, 90, 40, 0.4);
}

.btn-primary:hover {
  background: #ff703f;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 40px rgba(255, 90, 40, 0.5);
}

.btn-outline {
  background: transparent;
  color: #f0e9e1;
  border: 2px solid rgba(255, 90, 40, 0.5);
  backdrop-filter: blur(4px);
}

.btn-outline:hover {
  border-color: #ff5a28;
  background: rgba(255, 90, 40, 0.1);
  transform: translateY(-3px);
  box-shadow: 0 0 30px rgba(255, 90, 40, 0.2);
}

/* ============ SECTION ============ */
.section {
  padding: 80px 0;
  position: relative;
}

.section-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: #00ffc8;
  margin-bottom: 12px;
  font-weight: 600;
  display: inline-block;
  padding: 4px 12px;
  border-left: 3px solid #ff5a28;
}

.section-title {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: #f0e9e1;
  text-shadow: 2px 2px 0 #0d0b1a;
}

.section-desc {
  font-size: 1.1rem;
  color: #b0a79c;
  max-width: 640px;
  line-height: 1.7;
}

/* ============ CARDS GRID ============ */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
  margin-top: 48px;
}

.category-card {
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 28px;
  padding: 32px 24px;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.category-card::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 70% 30%, rgba(255, 90, 40, 0.1), transparent 60%);
  transition: all 0.5s ease;
  pointer-events: none;
}

.category-card:hover {
  transform: translateY(-8px) scale(1.01);
  border-color: rgba(255, 90, 40, 0.3);
  box-shadow: 0 16px 56px rgba(0, 0, 0, 0.5), 0 0 40px rgba(255, 90, 40, 0.05);
}

.category-card:hover::before {
  transform: scale(1.3);
}

.card-icon {
  font-size: 2.8rem;
  margin-bottom: 16px;
  display: block;
  filter: drop-shadow(0 4px 12px rgba(255, 90, 40, 0.2));
}

.category-card h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #f0e9e1;
}

.category-card p {
  color: #a0988a;
  font-size: 0.95rem;
  line-height: 1.6;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  color: #ff5a28;
  font-weight: 600;
  text-decoration: none;
  transition: gap 0.3s ease;
}

.card-link:hover {
  gap: 12px;
  text-decoration: underline;
}

/* ============ FEATURE BLOCK ============ */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin: 48px 0;
}

.feature-image {
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 90, 40, 0.15);
  transition: transform 0.5s ease;
}

.feature-image:hover {
  transform: scale(1.01);
}

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

.feature-text {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.feature-text h2 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.feature-text p {
  color: #b0a79c;
  font-size: 1.05rem;
  line-height: 1.7;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 8px;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
  color: #d0c8bc;
}

.feature-list li::before {
  content: "◆";
  color: #ff5a28;
  font-size: 0.8rem;
  text-shadow: 0 0 10px rgba(255, 90, 40, 0.4);
}

/* ============ STATS BAR ============ */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 32px;
  padding: 48px 0;
  border-top: 1px solid rgba(255, 90, 40, 0.15);
  border-bottom: 1px solid rgba(255, 90, 40, 0.15);
  margin: 48px 0;
}

.stat-item {
  text-align: center;
  padding: 16px 8px;
}

.stat-number {
  font-size: 3rem;
  font-weight: 900;
  color: #ff5a28;
  text-shadow: 0 0 30px rgba(255, 90, 40, 0.2);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.stat-label {
  font-size: 0.95rem;
  color: #a0988a;
  margin-top: 8px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============ CONTENT WALL ============ */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  margin: 48px 0;
}

.content-wall-item {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 24px;
  padding: 28px 24px;
  border: 1px solid rgba(255, 255, 255, 0.04);
  transition: all 0.3s ease;
  position: relative;
}

.content-wall-item:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 90, 40, 0.2);
  transform: translateY(-4px);
}

.content-wall-item h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #f0e9e1;
}

.content-wall-body {
  color: #a0988a;
  font-size: 0.95rem;
  line-height: 1.7;
}

.content-wall-body a {
  color: #ff5a28;
  text-decoration: none;
  font-weight: 600;
}

.content-wall-body a:hover {
  text-decoration: underline;
}

/* ============ FAQ ============ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 40px 0;
}

.faq-item {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 20px;
  padding: 20px 24px;
  border: 1px solid rgba(255, 255, 255, 0.04);
  transition: all 0.3s ease;
  cursor: pointer;
}

.faq-item:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 90, 40, 0.15);
}

.faq-item summary {
  font-size: 1.1rem;
  font-weight: 600;
  color: #f0e9e1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
  cursor: pointer;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.6rem;
  color: #ff5a28;
  transition: transform 0.3s ease;
  font-weight: 300;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding-top: 16px;
  color: #b0a79c;
  line-height: 1.7;
  font-size: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: 12px;
}

/* ============ CTA BANNER ============ */
.cta-banner {
  background: linear-gradient(135deg, rgba(255, 90, 40, 0.15), rgba(0, 255, 200, 0.05));
  border: 1px solid rgba(255, 90, 40, 0.2);
  border-radius: 40px;
  padding: 56px 48px;
  text-align: center;
  margin: 48px 0;
  backdrop-filter: blur(12px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: "";
  position: absolute;
  top: -30%;
  left: -20%;
  width: 140%;
  height: 140%;
  background: radial-gradient(circle at 30% 40%, rgba(255, 90, 40, 0.08), transparent 60%);
  pointer-events: none;
}

.cta-banner h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  color: #f0e9e1;
  margin-bottom: 12px;
}

.cta-banner p {
  color: #b0a79c;
  font-size: 1.1rem;
  margin-bottom: 24px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta-banner .btn {
  font-size: 1.1rem;
  padding: 16px 40px;
}

/* ============ FOOTER ============ */
.site-footer {
  border-top: 1px solid rgba(255, 90, 40, 0.15);
  padding: 48px 0 24px;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-brand .logo {
  font-size: 1.6rem;
}

.footer-brand p {
  color: #a0988a;
  font-size: 0.95rem;
  max-width: 300px;
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  color: #f0e9e1;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-col a {
  display: block;
  color: #a0988a;
  text-decoration: none;
  padding: 4px 0;
  font-size: 0.95rem;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.footer-col a:hover {
  color: #ff5a28;
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  color: #7a7266;
  font-size: 0.85rem;
}

.footer-bottom a {
  color: #a0988a;
  text-decoration: none;
}

.footer-bottom a:hover {
  color: #ff5a28;
}

/* ============ UTILITY ============ */
.text-accent {
  color: #ff5a28;
}

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

.seo-description {
  color: #7a7266;
  font-size: 0.85rem;
  line-height: 1.6;
  max-width: 800px;
  margin: 24px auto;
  text-align: center;
  padding: 0 16px;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 992px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 32px;
  }

  .hero-content {
    align-items: center;
  }

  .hero-content p {
    margin: 0 auto;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-image {
    order: -1;
  }

  .hero-image::before {
    width: 250px;
    height: 250px;
  }

  .feature-block {
    grid-template-columns: 1fr;
    text-align: center;
  }

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

  .feature-list {
    align-items: center;
  }

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

@media (max-width: 768px) {
  .header-inner {
    padding: 12px 0;
  }

  .main-nav {
    display: none;
    flex-direction: column;
    width: 100%;
    background: rgba(13, 11, 26, 0.95);
    backdrop-filter: blur(20px);
    padding: 16px 0;
    border-radius: 24px;
    margin-top: 8px;
    border: 1px solid rgba(255, 90, 40, 0.15);
  }

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

  .main-nav a {
    padding: 12px 24px;
    width: 100%;
    text-align: center;
  }

  .nav-cta {
    margin: 8px 16px;
    text-align: center;
  }

  .menu-toggle {
    display: flex;
  }

  .hero {
    padding: 40px 0;
    min-height: auto;
  }

  .hero-content h1 {
    font-size: 2.4rem;
  }

  .section {
    padding: 48px 0;
  }

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

  .content-wall {
    grid-template-columns: 1fr;
  }

  .stats-bar {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .cta-banner {
    padding: 32px 24px;
    border-radius: 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero-content h1 {
    font-size: 2rem;
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

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

  .stat-number {
    font-size: 2.2rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .logo {
    font-size: 1.4rem;
  }
}