/* ============================================
   赏金国际 - 赏金大对决
   设计概念：暗黑解构 + 荧光脉冲 + 网格破坏
   主色：深紫黑 (#0a0a1a) + 霓虹青 (#00ffc8) + 熔岩橙 (#ff6a00)
   ============================================ */

/* ---------- 全局重置 & 基础 ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: #0a0a1a;
  color: #e0e0f0;
  line-height: 1.6;
  overflow-x: hidden;
}

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: #0a0a1a;
}
::-webkit-scrollbar-thumb {
  background: #00ffc8;
  border-radius: 3px;
}

/* ---------- 工具类 ---------- */
.text-accent {
  color: #ff6a00;
  text-shadow: 0 0 8px rgba(255, 106, 0, 0.4);
}

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

.seo-description {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

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

/* ---------- 头部 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(10, 10, 26, 0.85);
  backdrop-filter: blur(12px) saturate(1.2);
  border-bottom: 1px solid rgba(0, 255, 200, 0.15);
  transition: background 0.4s ease, border-color 0.4s ease;
}

.site-header:hover {
  border-bottom-color: rgba(0, 255, 200, 0.5);
}

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

.logo {
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #00ffc8;
  text-shadow: 0 0 20px rgba(0, 255, 200, 0.3);
  position: relative;
  transition: transform 0.3s ease;
  cursor: default;
}

.logo::after {
  content: "✦";
  position: absolute;
  right: -28px;
  top: -4px;
  font-size: 1.2rem;
  color: #ff6a00;
  animation: pulseGlow 2s infinite alternate;
}

@keyframes pulseGlow {
  0% { text-shadow: 0 0 4px #ff6a00; opacity: 0.6; }
  100% { text-shadow: 0 0 20px #ff6a00, 0 0 40px #ff6a00; opacity: 1; }
}

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

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

.main-nav a {
  color: #c0c0e0;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.5px;
  position: relative;
  padding: 4px 0;
  transition: color 0.3s ease;
}

.main-nav a::before {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #00ffc8, #ff6a00);
  transition: width 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.main-nav a:hover {
  color: #ffffff;
}

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

.nav-cta {
  background: transparent;
  border: 1.5px solid #ff6a00;
  color: #ff6a00;
  padding: 8px 22px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 1px;
  transition: all 0.3s ease;
  cursor: pointer;
  text-transform: uppercase;
}

.nav-cta:hover {
  background: #ff6a00;
  color: #0a0a1a;
  box-shadow: 0 0 30px rgba(255, 106, 0, 0.4);
  transform: translateY(-2px);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: #00ffc8;
  font-size: 1.8rem;
  cursor: pointer;
  padding: 4px 8px;
  transition: transform 0.3s ease;
}

.menu-toggle:hover {
  transform: rotate(90deg);
}

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 80px;
  overflow: hidden;
  background: radial-gradient(ellipse at 20% 50%, rgba(0, 255, 200, 0.08), transparent 60%),
              radial-gradient(ellipse at 80% 20%, rgba(255, 106, 0, 0.06), transparent 50%),
              #0a0a1a;
}

.hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 255, 200, 0.08) 0%, transparent 70%);
  animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
  0% { transform: translate(0, 0) scale(1); opacity: 0.5; }
  100% { transform: translate(40px, -30px) scale(1.3); opacity: 1; }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: #00ffc8;
  background: rgba(0, 255, 200, 0.08);
  padding: 6px 20px;
  border-radius: 30px;
  border: 1px solid rgba(0, 255, 200, 0.2);
  margin-bottom: 24px;
  animation: fadeSlideUp 0.8s ease-out;
}

.hero-content h1 {
  font-size: clamp(2.8rem, 8vw, 5.2rem);
  font-weight: 900;
  line-height: 1.1;
  color: #ffffff;
  letter-spacing: -1px;
  margin-bottom: 20px;
  text-shadow: 0 4px 40px rgba(0, 0, 0, 0.6);
  animation: fadeSlideUp 0.8s ease-out 0.1s both;
}

.hero-content h1 span {
  color: #00ffc8;
  text-shadow: 0 0 30px rgba(0, 255, 200, 0.3);
}

.hero-content p {
  font-size: 1.2rem;
  color: #b0b0d0;
  max-width: 560px;
  margin-bottom: 40px;
  animation: fadeSlideUp 0.8s ease-out 0.2s both;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  animation: fadeSlideUp 0.8s ease-out 0.3s both;
}

@keyframes fadeSlideUp {
  0% { opacity: 0; transform: translateY(30px); }
  100% { opacity: 1; transform: translateY(0); }
}

.hero-image {
  position: absolute;
  right: -5%;
  top: 50%;
  transform: translateY(-50%);
  width: 45%;
  height: 70%;
  background: radial-gradient(circle at 30% 40%, rgba(0, 255, 200, 0.15), transparent 70%);
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.5;
  z-index: 1;
  animation: heroPulse 6s ease-in-out infinite alternate;
}

@keyframes heroPulse {
  0% { transform: translateY(-50%) scale(1); opacity: 0.3; }
  100% { transform: translateY(-50%) scale(1.2); opacity: 0.6; }
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 36px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  text-decoration: none;
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, #00ffc8, #00cc9e);
  color: #0a0a1a;
  box-shadow: 0 4px 20px rgba(0, 255, 200, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 40px rgba(0, 255, 200, 0.5);
}

.btn-outline {
  background: transparent;
  color: #00ffc8;
  border: 2px solid #00ffc8;
}

.btn-outline:hover {
  background: rgba(0, 255, 200, 0.1);
  box-shadow: 0 0 30px rgba(0, 255, 200, 0.2);
  transform: translateY(-3px);
}

/* ---------- 通用 Section ---------- */
.section {
  padding: 100px 0;
  position: relative;
}

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: #ff6a00;
  background: rgba(255, 106, 0, 0.08);
  padding: 4px 16px;
  border-radius: 30px;
  border: 1px solid rgba(255, 106, 0, 0.2);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  color: #ffffff;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-desc {
  font-size: 1.1rem;
  color: #9090b0;
  max-width: 600px;
  margin-bottom: 48px;
}

/* ---------- 卡片网格 ---------- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}

.category-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(0, 255, 200, 0.1);
  border-radius: 20px;
  padding: 36px 28px;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(4px);
}

.category-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, #00ffc8, #ff6a00);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.category-card:hover {
  border-color: rgba(0, 255, 200, 0.3);
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  background: rgba(255, 255, 255, 0.05);
}

.category-card:hover::before {
  transform: scaleX(1);
}

.card-icon {
  font-size: 2.8rem;
  margin-bottom: 20px;
  display: block;
  color: #00ffc8;
  filter: drop-shadow(0 0 12px rgba(0, 255, 200, 0.2));
  transition: transform 0.4s ease;
}

.category-card:hover .card-icon {
  transform: scale(1.1) rotate(-5deg);
}

.category-card h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 12px;
}

.category-card p {
  color: #9090b0;
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 20px;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #00ffc8;
  font-weight: 600;
  text-decoration: none;
  font-size: 0.9rem;
  transition: gap 0.3s ease;
}

.card-link::after {
  content: "→";
  font-size: 1.2rem;
  transition: transform 0.3s ease;
}

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

.card-link:hover::after {
  transform: translateX(4px);
}

/* ---------- 特色区块 ---------- */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}

.feature-block:last-child {
  margin-bottom: 0;
}

.feature-image {
  border-radius: 20px;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(0, 255, 200, 0.05), rgba(255, 106, 0, 0.05));
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: #00ffc8;
  border: 1px solid rgba(0, 255, 200, 0.1);
  position: relative;
}

.feature-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 40%, rgba(0, 255, 200, 0.1), transparent 70%);
}

.feature-text {
  padding: 20px 0;
}

.feature-text h3 {
  font-size: 2rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 16px;
}

.feature-text p {
  color: #9090b0;
  font-size: 1.05rem;
  margin-bottom: 24px;
}

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

.feature-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #c0c0e0;
  font-size: 0.95rem;
}

.feature-list li::before {
  content: "✦";
  color: #ff6a00;
  font-size: 1rem;
  text-shadow: 0 0 8px rgba(255, 106, 0, 0.4);
}

/* ---------- Stats 统计条 ---------- */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 32px;
  padding: 60px 0;
  border-top: 1px solid rgba(0, 255, 200, 0.1);
  border-bottom: 1px solid rgba(0, 255, 200, 0.1);
  margin: 60px 0;
}

.stat-item {
  text-align: center;
  padding: 20px 12px;
}

.stat-number {
  font-size: 3.2rem;
  font-weight: 900;
  color: #00ffc8;
  line-height: 1;
  margin-bottom: 8px;
  text-shadow: 0 0 30px rgba(0, 255, 200, 0.2);
}

.stat-label {
  font-size: 0.9rem;
  color: #8080a0;
  letter-spacing: 1px;
  text-transform: uppercase;
  font-weight: 500;
}

/* ---------- Content Wall ---------- */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.content-wall-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 106, 0, 0.08);
  border-radius: 16px;
  padding: 32px 28px;
  transition: all 0.4s ease;
  position: relative;
}

.content-wall-item:hover {
  border-color: rgba(255, 106, 0, 0.3);
  background: rgba(255, 106, 0, 0.03);
  transform: translateY(-4px);
}

.content-wall-item h4 {
  font-size: 1.2rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 12px;
}

.content-wall-body {
  color: #9090b0;
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ---------- FAQ ---------- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(0, 255, 200, 0.06);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.3s ease;
}

.faq-item:hover {
  border-color: rgba(0, 255, 200, 0.15);
}

.faq-item summary {
  padding: 20px 24px;
  font-weight: 600;
  font-size: 1.05rem;
  color: #e0e0f0;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color 0.3s ease;
}

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

.faq-item summary::after {
  content: "+";
  font-size: 1.6rem;
  color: #00ffc8;
  transition: transform 0.4s ease;
}

.faq-item[open] summary::after {
  content: "−";
  transform: rotate(180deg);
}

.faq-item[open] summary {
  color: #ffffff;
}

.faq-answer {
  padding: 0 24px 20px 24px;
  color: #8080a0;
  line-height: 1.7;
}

/* ---------- CTA Banner ---------- */
.cta-banner {
  background: linear-gradient(135deg, rgba(0, 255, 200, 0.05), rgba(255, 106, 0, 0.05));
  border: 1px solid rgba(0, 255, 200, 0.15);
  border-radius: 30px;
  padding: 60px 48px;
  text-align: center;
  margin: 80px 0;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -20%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(0, 255, 200, 0.1), transparent 70%);
  animation: ctaFloat 10s ease-in-out infinite alternate;
}

@keyframes ctaFloat {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(60px, -30px) scale(1.4); }
}

.cta-banner h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 16px;
  position: relative;
  z-index: 2;
}

.cta-banner p {
  color: #b0b0d0;
  font-size: 1.1rem;
  margin-bottom: 32px;
  position: relative;
  z-index: 2;
}

.cta-banner .btn {
  position: relative;
  z-index: 2;
}

/* ---------- Footer ---------- */
.site-footer {
  background: rgba(0, 0, 0, 0.4);
  border-top: 1px solid rgba(0, 255, 200, 0.08);
  padding-top: 60px;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}

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

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

.footer-brand .logo::after {
  display: none;
}

.footer-brand p {
  color: #707090;
  font-size: 0.9rem;
  max-width: 300px;
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: #00ffc8;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul a {
  color: #8080a0;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s ease;
}

.footer-col ul a:hover {
  color: #00ffc8;
}

.footer-bottom {
  border-top: 1px solid rgba(0, 255, 200, 0.06);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  color: #606080;
  font-size: 0.85rem;
}

.footer-bottom a {
  color: #606080;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-bottom a:hover {
  color: #00ffc8;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .feature-block {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .feature-image {
    order: -1;
  }

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

@media (max-width: 768px) {
  .header-inner {
    height: 64px;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    width: 100%;
    background: rgba(10, 10, 26, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px 32px;
    gap: 20px;
    border-bottom: 1px solid rgba(0, 255, 200, 0.15);
  }

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

  .menu-toggle {
    display: block;
  }

  .nav-cta {
    display: none;
  }

  .hero {
    padding-top: 64px;
    min-height: 90vh;
  }

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

  .hero-image {
    width: 80%;
    height: 40%;
    right: -10%;
    top: 30%;
  }

  .section {
    padding: 60px 0;
  }

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

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    padding: 40px 0;
  }

  .stat-number {
    font-size: 2.4rem;
  }

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

  .cta-banner {
    padding: 40px 24px;
    border-radius: 20px;
  }

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

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

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

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

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

  .hero-buttons {
    flex-direction: column;
    gap: 12px;
  }

  .btn {
    padding: 12px 28px;
    font-size: 0.85rem;
    width: 100%;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .stat-number {
    font-size: 2rem;
  }

  .stat-item {
    padding: 12px 8px;
  }

  .feature-text h3 {
    font-size: 1.5rem;
  }

  .faq-item summary {
    font-size: 0.95rem;
    padding: 16px 18px;
  }

  .faq-answer {
    padding: 0 18px 16px 18px;
  }
}

/* ---------- 移动端菜单交互 (纯JS辅助) ---------- */
/* 实际使用需配合JS: 
   document.querySelector('.menu-toggle').addEventListener('click', function() {
     document.querySelector('.main-nav').classList.toggle('active');
   });
*/