/* ========== 全局重置与基础样式 ========== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --green: #3FAA20;
  --green-dark: #2D7A16;
  --green-light: #50C830;
  --yellow: #E8C820;
  --orange: #E87020;
  --bg-dark: #0D0D0D;
  --bg-section: #1A1A1A;
  --text-white: #FFFFFF;
  --text-gray: #B0B0B0;
  --font-pixel: 'minecrafter', 'Courier New', monospace;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans SC', sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg-dark);
  color: var(--text-white);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.pixel-font {
  font-family: var(--font-pixel);
}

/* ========== 导航栏 ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 2px solid var(--green);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.nav-logo {
  display: flex;
  align-items: center;
}

.nav-links {
  display: flex;
  gap: 4px;
}

.nav-btn {
  background: none;
  border: 1px solid transparent;
  color: var(--text-white);
  font-size: 14px;
  padding: 8px 16px;
  cursor: pointer;
  font-family: var(--font-body);
  transition: border-color 0.2s;
}

.nav-btn:hover {
  border-color: var(--green);
}

.arrow-down {
  font-size: 10px;
  margin-left: 4px;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-buy {
  border: 2px solid var(--green);
  color: var(--green);
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.2s;
}

.btn-buy:hover {
  background: var(--green);
  color: #000;
}

.nav-icon-btn {
  background: none;
  border: none;
  color: var(--text-white);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-family: var(--font-body);
}

/* ========== Hero 区块 ========== */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  animation: heroZoom 20s ease-in-out infinite alternate;
}

@keyframes heroZoom {
  0% { transform: scale(1); }
  100% { transform: scale(1.1); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.2) 50%, rgba(0,0,0,0.1) 100%);
}

.hero-content {
  position: absolute;
  bottom: 80px;
  left: 40px;
  max-width: 420px;
  background: rgba(0, 0, 0, 0.75);
  padding: 32px;
  border-radius: 4px;
}

.hero-title {
  font-family: var(--font-pixel);
  font-size: 48px;
  line-height: 1.1;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.hero-desc {
  font-size: 15px;
  color: var(--text-gray);
  margin-bottom: 24px;
  line-height: 1.7;
}

.hero-pause-btn {
  position: absolute;
  bottom: 20px;
  right: 20px;
  background: rgba(0,0,0,0.5);
  border: 1px solid rgba(255,255,255,0.3);
  color: white;
  width: 40px;
  height: 40px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ========== 通用按钮 ========== */
.btn-green {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--green);
  color: #000;
  padding: 12px 24px;
  font-weight: 700;
  font-size: 14px;
  text-transform: uppercase;
  border: 2px solid var(--green-light);
  transition: all 0.2s;
  cursor: pointer;
  font-family: var(--font-body);
}

.btn-green:hover {
  background: var(--green-light);
  border-color: #70E050;
}

.btn-orange {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--orange);
  color: #000;
  padding: 12px 24px;
  font-weight: 700;
  font-size: 14px;
  text-transform: uppercase;
  border: 2px solid #FF8830;
  transition: all 0.2s;
  cursor: pointer;
  font-family: var(--font-body);
}

.btn-orange:hover {
  background: #FF8830;
}

.btn-arrow {
  font-size: 18px;
  font-weight: 700;
}

.link-underline {
  display: inline-block;
  margin-top: 12px;
  color: var(--green);
  text-decoration: underline;
  font-size: 14px;
}

.link-underline:hover {
  color: var(--green-light);
}

/* ========== 分栏布局 ========== */
.split-layout {
  display: flex;
  align-items: center;
  gap: 48px;
}

.split-layout.reverse {
  flex-direction: row-reverse;
}

.split-left, .split-right {
  flex: 1;
}

.text-content {
  padding: 24px 0;
}

.section-img {
  width: 100%;
  border-radius: 4px;
}

/* ========== 投身战场区块 ========== */
.section-battle {
  padding: 80px 0 40px;
  background: var(--bg-dark);
}

.section-battle .section-title-large {
  font-family: var(--font-body);
  font-size: 48px;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 24px;
}

.video-preview {
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  cursor: pointer;
}

.video-preview img {
  width: 100%;
  transition: transform 0.3s;
}

.video-preview:hover img {
  transform: scale(1.02);
}

.play-btn-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.3);
}

.play-btn-circle {
  width: 64px;
  height: 64px;
  background: rgba(0,0,0,0.7);
  border: 2px solid white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: white;
  transition: all 0.2s;
}

.video-preview:hover .play-btn-circle {
  background: rgba(0,0,0,0.9);
  transform: scale(1.1);
}

/* ========== 分享栏 ========== */
.share-bar {
  max-width: 1200px;
  margin: 32px auto 0;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  border-top: 1px solid #333;
}

.share-label {
  font-size: 14px;
  color: var(--text-gray);
}

.share-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid #555;
  border-radius: 50%;
  color: var(--text-white);
  font-size: 14px;
  background: none;
  cursor: pointer;
  transition: border-color 0.2s;
  text-decoration: none;
}

.share-icon:hover {
  border-color: var(--green);
  color: var(--green);
}

/* ========== Joust Rewards ========== */
.section-rewards {
  padding: 80px 0;
  background: var(--bg-section);
}

.section-title {
  font-size: 40px;
  line-height: 1.2;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.section-desc {
  font-size: 15px;
  color: var(--text-gray);
  margin-bottom: 24px;
  line-height: 1.7;
}

/* ========== Enter the Mob Maze ========== */
.section-maze {
  padding: 80px 0;
  background: var(--bg-dark);
}

/* ========== Minecraft Realms ========== */
.section-realms {
  padding: 80px 0;
  background: var(--bg-dark);
}

.realms-img {
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(128, 0, 255, 0.3);
}

/* 像素装饰条 */
.pixel-decoration {
  margin-top: 48px;
  overflow: hidden;
}

.pixel-row {
  display: flex;
  gap: 4px;
  justify-content: center;
  margin-bottom: 4px;
}

.px {
  display: inline-block;
  width: 24px;
  height: 24px;
  background: transparent;
}

.px.green {
  background: var(--green);
}

.px.yellow {
  background: var(--yellow);
}

/* ========== 顶部轮播图 ========== */
.section-hero-carousel {
  width: 100%;
  background: var(--bg-dark);
}

.hero-carousel {
  position: relative;
  width: 100%;
  height: 50vh;
  min-height: 300px;
  overflow: hidden;
}

.hero-carousel-track {
  display: flex;
  height: 100%;
  transition: transform 0.5s ease;
}

.hero-carousel-slide {
  min-width: 100%;
  height: 100%;
}

.hero-carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-carousel .carousel-btn {
  z-index: 10;
}

.hero-carousel-dots {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 10;
}

.hero-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.7);
  background: transparent;
  cursor: pointer;
  padding: 0;
  transition: all 0.3s;
}

.hero-dot.active {
  background: var(--green);
  border-color: var(--green);
}

.hero-dot:hover {
  border-color: var(--green);
}

/* ========== 社区分享 / 加入全球改造行动 ========== */
.section-community {
  padding: 80px 0;
  background: var(--bg-section);
}

.community-social {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-top: 48px;
  flex-wrap: wrap;
}

.community-social-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--text-gray);
  text-decoration: none;
  padding: 20px 24px;
  border: 1px solid #333;
  border-radius: 8px;
  background: var(--bg-dark);
  transition: all 0.3s;
  min-width: 100px;
}

.community-social-link:hover {
  border-color: var(--green);
  color: var(--green);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(63, 170, 32, 0.15);
}

.community-social-link svg {
  transition: transform 0.3s;
}

.community-social-link:hover svg {
  transform: scale(1.15);
}

.community-social-link span {
  font-size: 13px;
  font-weight: 600;
}

/* ========== 备好鞍具 详情区 ========== */
.section-details {
  padding: 80px 0;
  background: var(--bg-dark);
}

.section-title-center {
  text-align: center;
  font-size: 36px;
  margin-bottom: 16px;
  font-family: var(--font-pixel);
}

.section-desc-center {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 40px;
  color: var(--text-gray);
  font-size: 15px;
  line-height: 1.7;
}

/* Tabs */
.tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 48px;
}

.tab-btn {
  background: none;
  border: 2px solid #555;
  color: var(--text-white);
  padding: 10px 28px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-body);
  transition: all 0.2s;
}

.tab-btn:hover {
  border-color: var(--green);
}

.tab-btn.active {
  border-color: var(--green);
  background: var(--green);
  color: #000;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.tab-section-title {
  text-align: center;
  font-size: 32px;
  margin-bottom: 48px;
}

/* Feature 行 */
.feature-row {
  display: flex;
  align-items: center;
  gap: 48px;
  margin-bottom: 48px;
}

.feature-row.reverse {
  flex-direction: row-reverse;
}

.feature-text {
  flex: 1;
}

.feature-text h4 {
  font-size: 22px;
  margin-bottom: 12px;
}

.feature-text p {
  color: var(--text-gray);
  font-size: 15px;
  line-height: 1.7;
}

.feature-icon {
  font-size: 32px;
  margin-bottom: 12px;
}

.feature-img {
  flex: 1;
}

.feature-img img {
  border-radius: 4px;
  width: 100%;
  background: var(--bg-section);
}

/* 图片说明 */
.image-captions {
  display: flex;
  gap: 24px;
  margin-top: 48px;
}

.caption-item {
  flex: 1;
  text-align: center;
}

.caption-item img {
  width: 100%;
  border-radius: 4px;
  margin-bottom: 12px;
}

.caption-item p {
  font-size: 14px;
  color: var(--text-gray);
}

/* ========== 竞技场系列 / 图片轮播 ========== */
.section-gallery {
  padding: 80px 0;
  background: var(--bg-section);
}

.gallery-subtitle {
  text-align: center;
  color: var(--text-gray);
  margin-bottom: 32px;
  font-size: 15px;
}

.gallery-carousel {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
}

.carousel-track {
  display: flex;
  transition: transform 0.4s ease;
}

.carousel-slide {
  min-width: 100%;
}

.carousel-slide img {
  width: 100%;
  border-radius: 4px;
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0,0,0,0.6);
  border: 2px solid rgba(255,255,255,0.3);
  color: white;
  width: 48px;
  height: 48px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 20px;
  z-index: 10;
  transition: all 0.2s;
}

.carousel-btn:hover {
  background: rgba(0,0,0,0.9);
  border-color: var(--green);
}

.carousel-btn.prev {
  left: 16px;
}

.carousel-btn.next {
  right: 16px;
}

.gallery-caption {
  text-align: center;
  padding: 16px;
  color: var(--text-gray);
  font-size: 14px;
}

/* ========== 新闻轮播 ========== */
.section-news {
  padding: 80px 0;
  background: var(--bg-section);
}

.link-all-news {
  display: block;
  text-align: center;
  color: var(--green);
  margin-bottom: 32px;
  font-size: 14px;
}

.link-all-news:hover {
  text-decoration: underline;
}

.news-carousel {
  position: relative;
}

.news-track {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 8px 0;
}

.news-track::-webkit-scrollbar {
  display: none;
}

.news-card {
  flex: 0 0 calc(25% - 18px);
  scroll-snap-align: start;
  background: var(--bg-dark);
  border-radius: 4px;
  overflow: hidden;
  transition: transform 0.2s;
  display: block;
  text-decoration: none;
  color: var(--text-white);
  border: 1px solid #333;
}

.news-card:hover {
  transform: translateY(-4px);
  border-color: var(--green);
}

.news-card-img {
  height: 160px;
  overflow: hidden;
}

.news-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-tag {
  display: inline-block;
  background: var(--bg-section);
  border: 1px solid #555;
  padding: 2px 10px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  margin: 12px 16px 8px;
  font-family: var(--font-pixel);
}

.news-card h3 {
  padding: 0 16px;
  font-size: 16px;
  font-family: var(--font-pixel);
  line-height: 1.3;
  margin-bottom: 8px;
}

.news-card p {
  padding: 0 16px 16px;
  font-size: 13px;
  color: var(--text-gray);
}

/* ========== 截图画廊 ========== */
.section-screenshots {
  padding: 80px 0;
  background: var(--bg-dark);
}

.screenshot-main {
  position: relative;
  margin-bottom: 16px;
  border-radius: 4px;
  overflow: hidden;
}

.screenshot-main img {
  width: 100%;
  border-radius: 4px;
}

.ss-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0,0,0,0.6);
  border: 2px solid rgba(255,255,255,0.3);
  color: white;
  width: 48px;
  height: 48px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 20px;
  transition: all 0.2s;
}

.ss-nav:hover {
  background: rgba(0,0,0,0.9);
  border-color: var(--green);
}

.ss-nav.prev {
  left: 16px;
}

.ss-nav.next {
  right: 16px;
}

.screenshot-thumbs {
  display: flex;
  gap: 8px;
  justify-content: center;
}

.ss-thumb {
  width: 80px;
  height: 50px;
  border: 2px solid transparent;
  border-radius: 4px;
  overflow: hidden;
  cursor: pointer;
  background: none;
  padding: 0;
  transition: border-color 0.2s;
}

.ss-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ss-thumb.active,
.ss-thumb:hover {
  border-color: var(--green);
}

/* ========== 邮件订阅 ========== */
.section-newsletter {
  padding: 80px 0;
  background: var(--bg-section);
}

.newsletter-box {
  max-width: 800px;
  background: var(--bg-dark);
  padding: 48px;
  border-radius: 4px;
  border: 1px solid #333;
}

.newsletter-box .section-title {
  font-size: 28px;
  margin-bottom: 12px;
}

.newsletter-box .section-desc {
  margin-bottom: 24px;
}

.form-row {
  display: flex;
  gap: 24px;
  margin-bottom: 16px;
}

.form-group {
  flex: 1;
}

.form-group label {
  display: block;
  font-size: 13px;
  color: var(--text-gray);
  margin-bottom: 6px;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 10px 14px;
  background: #222;
  border: 1px solid #555;
  color: var(--text-white);
  font-size: 14px;
  border-radius: 2px;
  font-family: var(--font-body);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--green);
}

.form-note {
  font-size: 12px;
  color: var(--text-gray);
  margin-bottom: 12px;
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13px;
  color: var(--text-gray);
  margin-bottom: 20px;
  cursor: pointer;
}

.checkbox-label input {
  margin-top: 3px;
  accent-color: var(--green);
}

.checkbox-label a {
  color: var(--green);
  text-decoration: underline;
}

.btn-submit {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #555;
  color: var(--text-white);
  padding: 12px 32px;
  font-weight: 700;
  font-size: 14px;
  border: 2px solid #777;
  cursor: pointer;
  font-family: var(--font-body);
  transition: all 0.2s;
}

.btn-submit:hover {
  background: #666;
  border-color: var(--green);
}

/* ========== FAQ 手风琴 ========== */
.section-faq {
  padding: 80px 0;
  background: var(--bg-dark);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid #333;
}

.faq-toggle {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  background: none;
  border: none;
  color: var(--text-white);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
}

.faq-toggle:hover {
  color: var(--green);
}

.faq-arrow {
  font-size: 18px;
  transition: transform 0.3s;
}

.faq-item.open .faq-arrow {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.open .faq-answer {
  max-height: 500px;
}

.faq-answer p {
  padding: 0 0 20px;
  color: var(--text-gray);
  font-size: 14px;
  line-height: 1.7;
}

/* ========== 免责声明 ========== */
.section-disclaimer {
  padding: 40px 0;
  background: var(--bg-dark);
  border-top: 1px solid #222;
}

.disclaimer-text {
  font-size: 11px;
  color: #666;
  line-height: 1.6;
  margin-bottom: 8px;
}

/* ========== 页脚 ========== */
.footer {
  padding: 48px 0 32px;
  background: #111;
  border-top: 2px solid var(--green);
}

.footer-social {
  text-align: center;
  margin-bottom: 32px;
}

.footer-social span {
  display: block;
  font-family: var(--font-pixel);
  font-size: 14px;
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.social-icons {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.social-icons a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid #555;
  border-radius: 50%;
  font-size: 16px;
  transition: all 0.2s;
}

.social-icons a:hover {
  border-color: var(--green);
  color: var(--green);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 64px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.footer-col a {
  display: block;
  font-size: 13px;
  color: var(--text-gray);
  margin-bottom: 6px;
  transition: color 0.2s;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid #333;
}

.footer-logos {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-bottom: 16px;
}

.footer-brand {
  font-size: 14px;
  letter-spacing: 2px;
  color: var(--text-gray);
}

.footer-copy {
  font-size: 12px;
  color: #555;
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .hero-content {
    left: 16px;
    right: 16px;
    bottom: 40px;
    max-width: none;
  }

  .hero-title {
    font-size: 32px;
  }

  .split-layout {
    flex-direction: column;
    gap: 24px;
  }

  .split-layout.reverse {
    flex-direction: column;
  }

  .section-battle .section-title-large {
    font-size: 32px;
  }

  .feature-row,
  .feature-row.reverse {
    flex-direction: column;
    gap: 24px;
  }

  .image-captions {
    flex-direction: column;
  }

  .form-row {
    flex-direction: column;
  }

  .news-card {
    flex: 0 0 80%;
  }

  .footer-links {
    gap: 32px;
  }

  .tabs {
    flex-wrap: wrap;
  }
}

/* ========== 合并社区 + UGC 展示区 ========== */
.section-community-ugc {
  padding: 80px 0;
  background: var(--bg-dark);
}

/* SNS 图标简化版 */
.community-social-mini {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 40px;
}

.community-social-mini a {
  color: var(--text-gray);
  transition: color 0.2s, transform 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.community-social-mini a:hover {
  color: var(--green);
  transform: scale(1.2);
}

/* 瀑布流固定高度可滚动容器 */
.waterfall-viewport {
  max-height: 600px;
  overflow-y: auto;
  border-radius: 8px;
  position: relative;
  /* 自定义滚动条 */
  scrollbar-width: thin;
  scrollbar-color: #444 transparent;
}

.waterfall-viewport::-webkit-scrollbar {
  width: 6px;
}

.waterfall-viewport::-webkit-scrollbar-track {
  background: transparent;
}

.waterfall-viewport::-webkit-scrollbar-thumb {
  background: #444;
  border-radius: 3px;
}

.waterfall-viewport::-webkit-scrollbar-thumb:hover {
  background: #666;
}

.waterfall-grid {
  columns: 3;
  column-gap: 16px;
}

.waterfall-item {
  break-inside: avoid;
  margin-bottom: 16px;
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
}

.waterfall-item img {
  width: 100%;
  display: block;
  transition: transform 0.3s ease;
}

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

.waterfall-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 24px 16px 12px;
  background: linear-gradient(transparent, rgba(0,0,0,0.85));
  opacity: 0;
  transition: opacity 0.3s ease;
  display: flex;
  align-items: flex-end;
}

.waterfall-item:hover .waterfall-overlay {
  opacity: 1;
}

.waterfall-username {
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  text-shadow: 0 1px 4px rgba(0,0,0,0.5);
}

@media (max-width: 768px) {
  .waterfall-viewport {
    max-height: 450px;
  }
  .waterfall-grid {
    columns: 2;
    column-gap: 10px;
  }
  .waterfall-item {
    margin-bottom: 10px;
  }
}

@media (max-width: 480px) {
  .waterfall-grid {
    columns: 1;
  }
}

/* ========== 感谢参与者 ========== */
.section-thanks {
  padding: 60px 0 40px;
  background: var(--bg-section);
  border-top: 3px solid var(--green);
}

.section-thanks .section-title-center {
  margin-bottom: 24px;
}

.thanks-names {
  text-align: center;
  color: var(--text-gray);
  font-size: 15px;
  line-height: 2;
  max-width: 900px;
  margin: 0 auto;
  word-break: break-word;
}

/* ========== 全国防鸟撞行动网络 ========== */
.section-bird-network {
  padding: 50px 0;
  background: #1e1e1e;
  border-top: 1px solid #333;
}

.bird-network-inner {
  display: flex;
  align-items: flex-start;
  gap: 40px;
}

.bird-network-text {
  flex: 1;
}

.bird-network-text h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 16px;
}

.bird-network-text p {
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-gray);
}

.bird-network-qr {
  flex-shrink: 0;
}

.qr-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.qr-placeholder span {
  font-size: 13px;
  color: var(--text-gray);
}

@media (max-width: 768px) {
  .bird-network-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .bird-network-qr {
    margin-top: 20px;
  }
}

/* ========== 简化页脚 ========== */
.footer .footer-social,
.footer .footer-links {
  display: none;
}

/* 隐藏旧的社区区块样式 */
.section-community {
  display: none;
}
.section-ugc-waterfall {
  display: none;
}

/* ========== TBWA 创意策划 + 联系我们 ========== */
.section-tbwa {
  padding: 30px 0;
  background: #1a1a1a;
  border-top: 1px solid #333;
}

.tbwa-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.tbwa-left,
.tbwa-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.tbwa-label {
  color: var(--text-gray);
  font-size: 14px;
}

.tbwa-logo {
  height: 28px;
  width: auto;
  filter: brightness(0) invert(1);
}

.tbwa-divider {
  color: #555;
  font-size: 20px;
}

.tbwa-email {
  color: #fff;
  font-size: 14px;
  text-decoration: none;
  transition: color 0.2s;
}

.tbwa-email:hover {
  color: var(--green);
  text-decoration: underline;
}

@media (max-width: 600px) {
  .tbwa-inner {
    flex-direction: column;
    gap: 12px;
  }
  .tbwa-divider {
    display: none;
  }
}

/* ========== 科学防鸟撞规范网格 ========== */
.science-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 40px;
}
.science-item {
  background: #1a1a1a;
  border: 1px solid #333;
  border-radius: 8px;
  padding: 30px 24px;
  transition: border-color 0.3s;
}
.science-item:hover {
  border-color: var(--green);
}
.science-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--green);
  color: #000;
  font-weight: 700;
  font-size: 18px;
  border-radius: 50%;
  margin-bottom: 16px;
}
.science-item h4 {
  font-size: 18px;
  margin-bottom: 10px;
  color: #fff;
}
.science-item p {
  font-size: 14px;
  color: #aaa;
  line-height: 1.7;
}

/* 步骤编号样式 */
.step-number {
  font-size: 28px !important;
  color: var(--green) !important;
}

/* 响应式：科学规范网格 */
@media (max-width: 900px) {
  .science-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 600px) {
  .science-grid {
    grid-template-columns: 1fr;
  }
}

/* ========== 三步操作卡片网格 ========== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 40px;
}
.step-card {
  background: #1a1a1a;
  border: 1px solid #333;
  border-radius: 8px;
  overflow: hidden;
  transition: border-color 0.3s, transform 0.3s;
  display: flex;
  flex-direction: column;
}
.step-card:hover {
  border-color: var(--green);
  transform: translateY(-4px);
}
.step-card-text {
  padding: 28px 24px 20px;
}
.step-card-text h4 {
  font-size: 18px;
  margin-bottom: 10px;
  color: #fff;
}
.step-card-text p {
  font-size: 14px;
  color: #aaa;
  line-height: 1.7;
}
.step-card-img {
  flex: 1;
  overflow: hidden;
}
.step-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s;
}
.step-card:hover .step-card-img img {
  transform: scale(1.05);
}

/* 响应式：步骤卡片网格 */
@media (max-width: 900px) {
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 600px) {
  .steps-grid {
    grid-template-columns: 1fr;
  }
}