/* ==========================================================
   ACFun 流鼻血版 · acfan.sd.cn
   Design System: "Cream Punch Neo-Pop"
   暖奶油 × 珊瑚红 × 薄荷绿
   ========================================================== */

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

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', 'PingFang SC', sans-serif;
  overflow-x: hidden;
  background: #FFF9F0;
  background-image: radial-gradient(#F5E0D8 0.8px, transparent 0.8px);
  background-size: 32px 32px;
  color: #2B2B2B;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: #FF4D5E;
  color: #FFF9F0;
}

::-webkit-scrollbar {
  width: 12px;
  background: #FFF0E8;
}
::-webkit-scrollbar-thumb {
  background: #FF4D5E;
  border: 3px solid #FFF0E8;
  border-radius: 12px;
}
::-webkit-scrollbar-thumb:hover {
  background: #D9364A;
}

/* 核心布局 — 必须居中 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
  position: relative;
}

.section:nth-child(even) {
  background: #FFF0E8;
  background-image: radial-gradient(#F8DBD2 1px, transparent 1px);
  background-size: 26px 26px;
  border-top: 3px solid #2B2B2B;
  border-bottom: 3px solid #2B2B2B;
}

/* 导航 — 固定顶部 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 249, 240, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 3px solid #2B2B2B;
  box-shadow: 0 3px 0 #FF4D5E;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 1.25rem;
  text-decoration: none;
  color: #2B2B2B;
  letter-spacing: -0.5px;
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.logo:hover {
  transform: rotate(-2deg) scale(1.03);
}

.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  background: linear-gradient(135deg, #FF4D5E, #FF6B7A);
  color: #fff;
  border: 2.5px solid #2B2B2B;
  box-shadow: 3px 3px 0 #2B2B2B;
  position: relative;
}

.logo-icon::after {
  content: '🩸';
  position: absolute;
  top: -8px;
  right: -8px;
  font-size: 0.9rem;
  filter: drop-shadow(1px 1px 0 rgba(43, 43, 43, 0.3));
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  color: #2B2B2B;
  transition: all 0.2s ease;
  padding: 8px 16px;
  border-radius: 50px;
  border: 2px solid transparent;
}

.main-nav a:hover {
  color: #FF4D5E;
  background: rgba(255, 77, 94, 0.08);
  border-color: rgba(255, 77, 94, 0.3);
}

.nav-cta {
  padding: 10px 22px !important;
  border-radius: 50px !important;
  color: #fff !important;
  font-weight: 700 !important;
  background: #FF4D5E;
  border: 2.5px solid #2B2B2B !important;
  box-shadow: 3px 3px 0 #2B2B2B;
  letter-spacing: 0.5px;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1) !important;
}

.nav-cta:hover {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 #2B2B2B;
  background: #D9364A !important;
  color: #fff !important;
  border-color: #2B2B2B !important;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 2.5px solid #2B2B2B;
  border-radius: 12px;
  background: #FFF9F0;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  cursor: pointer;
  box-shadow: 3px 3px 0 #2B2B2B;
  transition: all 0.2s;
}

.menu-toggle:hover {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0 #2B2B2B;
}

/* 首页 Hero */
.hero {
  min-height: 88vh;
  display: flex;
  align-items: center;
  padding: 120px 0 70px;
  position: relative;
  background: linear-gradient(160deg, #FFF9F0 0%, #FFECE4 55%, #FFE0D6 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 77, 94, 0.1) 0%, transparent 65%);
  top: -180px;
  right: -120px;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 184, 148, 0.12) 0%, transparent 65%);
  bottom: -100px;
  left: 10%;
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-content {
  max-width: 660px;
  position: relative;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 7px 20px;
  border-radius: 50px;
  margin-bottom: 22px;
  background: #FFD166;
  color: #2B2B2B;
  border: 2.5px solid #2B2B2B;
  box-shadow: 3px 3px 0 #2B2B2B;
  transform: rotate(-2deg);
  letter-spacing: 2px;
  text-transform: uppercase;
  animation: badgeWiggle 4s ease-in-out infinite;
}

.hero h1 {
  font-size: 4rem;
  font-weight: 900;
  line-height: 1.12;
  margin-bottom: 26px;
  letter-spacing: -2.5px;
  position: relative;
}

.hero h1 .accent {
  color: #FF4D5E;
  position: relative;
  display: inline-block;
  white-space: nowrap;
}

.hero h1 .accent::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: -2px;
  width: calc(100% + 4px);
  height: 14px;
  background: rgba(255, 209, 102, 0.55);
  z-index: -1;
  border-radius: 3px;
  transform: rotate(-1.5deg);
}

.hero p {
  font-size: 1.08rem;
  opacity: 0.72;
  max-width: 520px;
  margin-bottom: 36px;
  line-height: 1.85;
}

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

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  letter-spacing: 0.5px;
  position: relative;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #FF4D5E, #FF6B7A);
  border: 2.5px solid #2B2B2B;
  box-shadow: 4px 4px 0 #2B2B2B;
}

.btn-primary:hover {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 #2B2B2B;
  filter: brightness(1.05);
}

.btn-primary::after {
  content: '→';
  font-size: 1.1rem;
  transition: transform 0.2s;
}

.btn-primary:hover::after {
  transform: translateX(4px);
}

.btn-outline {
  background: #fff;
  border: 2.5px solid #2B2B2B;
  color: #2B2B2B;
  box-shadow: 4px 4px 0 #2B2B2B;
}

.btn-outline:hover {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 #2B2B2B;
  background: #FFF0E8;
}

/* Hero 右侧视觉 */
.hero-image {
  position: relative;
  border-radius: 28px;
  overflow: visible;
  min-height: 400px;
  border: 3px solid #2B2B2B;
  box-shadow: 10px 10px 0 #FF4D5E;
  background:
    radial-gradient(circle at 75% 25%, rgba(255, 255, 255, 0.7) 0%, transparent 30%),
    radial-gradient(circle at 20% 80%, rgba(255, 209, 102, 0.4) 0%, transparent 25%),
    linear-gradient(135deg, #FFE8E0 0%, #FFF3EE 45%, #FFD9D0 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 中央表情 */
.hero-image::before {
  content: '🤯';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 5.8rem;
  filter: drop-shadow(5px 5px 0 rgba(43, 43, 43, 0.18));
  z-index: 2;
  animation: emojiPulse 3s ease-in-out infinite;
}

/* 弹幕气泡 */
.hero-image::after {
  content: '🩸 鼻血止不住啊!!!!';
  position: absolute;
  top: 12%;
  left: -24px;
  background: #fff;
  border: 2.5px solid #2B2B2B;
  border-radius: 50px;
  padding: 8px 18px;
  font-size: 0.82rem;
  font-weight: 700;
  box-shadow: 4px 4px 0 rgba(43, 43, 43, 0.2);
  white-space: nowrap;
  z-index: 3;
  animation: bubbleFloat 5s ease-in-out infinite;
}

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: 24px;
  z-index: 1;
  position: relative;
}

/* 额外弹幕装饰（通过 .hero 的 after 实现） */
.hero .container::before {
  content: '弹幕护体！';
  position: absolute;
  bottom: 18%;
  right: 4%;
  background: #E0F7F3;
  border: 2.5px solid #2B2B2B;
  border-radius: 50px;
  padding: 6px 14px;
  font-size: 0.75rem;
  font-weight: 700;
  box-shadow: 3px 3px 0 rgba(43, 43, 43, 0.2);
  transform: rotate(4deg);
  z-index: 3;
  animation: bubbleFloat 4.5s ease-in-out 1s infinite;
}

/* 标签 / 标题 */
.section-label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 3px;
  margin-bottom: 18px;
  padding: 7px 16px;
  background: #2B2B2B;
  color: #FFD166;
  border-radius: 4px;
  text-transform: uppercase;
  transform: rotate(-1.5deg);
  position: relative;
}

.section-label::after {
  content: '';
  position: absolute;
  top: 0;
  right: -4px;
  width: 4px;
  height: 100%;
  background: #FF4D5E;
  border-radius: 0 4px 4px 0;
}

.section-title {
  font-size: 2.6rem;
  font-weight: 900;
  margin-bottom: 18px;
  letter-spacing: -1.5px;
  line-height: 1.2;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  width: 100%;
  height: 10px;
  background: rgba(255, 209, 102, 0.45);
  border-radius: 4px;
  z-index: -1;
}

.section-desc {
  max-width: 600px;
  opacity: 0.68;
  margin-bottom: 48px;
  font-size: 1.05rem;
  line-height: 1.8;
}

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

.category-card {
  border-radius: 22px;
  padding: 34px 28px 30px;
  background: #fff;
  border: 2.5px solid #2B2B2B;
  box-shadow: 6px 6px 0 #2B2B2B;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, transparent 50%, #FF4D5E 50%, #FF4D5E 100%);
  border-bottom-left-radius: 16px;
  opacity: 0.9;
}

.category-card::after {
  content: '';
  position: absolute;
  bottom: -20px;
  right: -20px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(255, 209, 102, 0.25);
  transition: all 0.3s;
}

.category-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 10px 10px 0 #FF4D5E;
}

.category-card:hover::after {
  transform: scale(1.4);
}

.card-icon {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  font-size: 1.6rem;
  background: #FFF0E8;
  border: 2.5px solid #2B2B2B;
  box-shadow: 3px 3px 0 rgba(43, 43, 43, 0.15);
  transition: transform 0.3s;
}

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

.category-card h3 {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.category-card p {
  font-size: 0.88rem;
  opacity: 0.6;
  line-height: 1.6;
  margin-bottom: 18px;
}

.card-link {
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  color: #FF4D5E;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  z-index: 2;
}

.card-link:hover {
  gap: 10px;
  color: #D9364A;
}

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

.feature-image {
  border-radius: 24px;
  overflow: hidden;
  border: 3px solid #2B2B2B;
  box-shadow: 9px 9px 0 #00B894;
  background:
    radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.5) 0%, transparent 30%),
    linear-gradient(135deg, #E0F7F3, #C8ECE6);
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.feature-image::before {
  content: '📺';
  font-size: 5rem;
  filter: drop-shadow(5px 5px 0 rgba(43, 43, 43, 0.15));
  animation: emojiPulse 4s ease-in-out infinite;
}

.feature-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(0, 184, 148, 0.15));
}

.feature-image img {
  width: 100%;
  height: auto;
  object-fit: cover;
  position: relative;
  z-index: 1;
}

.feature-text {
  position: relative;
}

.feature-text h3 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
  letter-spacing: -1px;
}

.feature-text > p {
  opacity: 0.7;
  margin-bottom: 20px;
  line-height: 1.85;
}

.feature-list {
  list-style: none;
  margin-top: 28px;
}

.feature-list li {
  padding: 11px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
  font-size: 0.95rem;
  border-bottom: 1.5px dashed #E8C8C0;
}

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

.feature-list li::before {
  content: '✓';
  font-weight: 900;
  color: #fff;
  background: #00B894;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  border: 2px solid #2B2B2B;
  flex-shrink: 0;
  box-shadow: 1px 1px 0 rgba(43, 43, 43, 0.3);
}

/* 数据条 */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
  text-align: center;
}

.stat-item {
  padding: 36px 24px 30px;
  border-radius: 22px;
  background: #fff;
  border: 2.5px solid #2B2B2B;
  box-shadow: 6px 6px 0 #2B2B2B;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  overflow: hidden;
}

.stat-item:nth-child(1) { background: #FFF0E8; }
.stat-item:nth-child(2) { background: #E0F7F3; }
.stat-item:nth-child(3) { background: #FFF8E1; }
.stat-item:nth-child(4) { background: #FDE8EF; }

.stat-item::after {
  content: '';
  position: absolute;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  top: -30px;
  right: -30px;
}

.stat-item:hover {
  transform: translate(-3px, -3px);
  box-shadow: 9px 9px 0 #FF4D5E;
}

.stat-number {
  font-size: 3rem;
  font-weight: 900;
  letter-spacing: -2.5px;
  line-height: 1;
  color: #2B2B2B;
  position: relative;
  z-index: 1;
}

.stat-label {
  font-size: 0.88rem;
  opacity: 0.65;
  margin-top: 10px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

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

.content-wall-item {
  border-radius: 22px;
  overflow: hidden;
  border: 2.5px solid #2B2B2B;
  background: #fff;
  box-shadow: 6px 6px 0 #2B2B2B;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
}

.content-wall-item:hover {
  transform: translate(-2px, -2px);
  box-shadow: 9px 9px 0 #FFD166;
}

.content-wall-item::before {
  content: '🔥';
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 3;
  font-size: 1.2rem;
  background: #fff;
  border: 2px solid #2B2B2B;
  border-radius: 50px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 2px 2px 0 rgba(43, 43, 43, 0.25);
  opacity: 0;
  transform: scale(0.6);
  transition: all 0.3s;
}

.content-wall-item:hover::before {
  opacity: 1;
  transform: scale(1);
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 2.5px solid #2B2B2B;
  display: block;
  transition: transform 0.4s ease;
}

.content-wall-item:hover img {
  transform: scale(1.04);
}

.content-wall-body {
  padding: 22px 20px;
}

.content-wall-body h3 {
  font-size: 1.12rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.content-wall-body p {
  font-size: 0.85rem;
  opacity: 0.6;
  line-height: 1.6;
  margin-bottom: 12px;
}

.content-wall-body .card-link {
  font-size: 0.8rem;
}

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

.faq-item {
  background: #fff;
  border: 2.5px solid #2B2B2B;
  border-radius: 18px;
  margin-bottom: 16px;
  overflow: hidden;
  cursor: pointer;
  box-shadow: 4px 4px 0 #2B2B2B;
  transition: all 0.3s ease;
}

.faq-item:hover {
  box-shadow: 7px 7px 0 #FF4D5E;
  transform: translate(-1px, -1px);
}

.faq-item.open {
  box-shadow: 7px 7px 0 #00B894;
  transform: translate(-1px, -1px);
  background: linear-gradient(135deg, #fff, #FFF8F4);
}

.faq-item .faq-question {
  padding: 20px 24px;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1rem;
  letter-spacing: 0.2px;
  gap: 16px;
}

.faq-item .faq-question::after {
  content: '＋';
  font-size: 1.3rem;
  font-weight: 400;
  color: #FF4D5E;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border: 2px solid #2B2B2B;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #FFF0E8;
  box-shadow: 2px 2px 0 rgba(43, 43, 43, 0.2);
}

.faq-item.open .faq-question::after {
  content: '−';
  transform: rotate(90deg);
  color: #00B894;
  background: #E0F7F3;
}

.faq-item .faq-answer {
  padding: 0 24px 20px;
  display: none;
  opacity: 0.72;
  font-size: 0.93rem;
  line-height: 1.85;
  border-top: 1.5px dashed #E0D0C8;
  padding-top: 14px;
  margin-top: 2px;
}

.faq-item.open .faq-answer {
  display: block;
  animation: fadeSlideIn 0.3s ease;
}

/* CTA 横幅 */
.cta-banner {
  padding: 68px 32px;
  text-align: center;
  border-radius: 28px;
  color: #fff;
  background: linear-gradient(135deg, #FF4D5E, #FF6B7A, #FF4D5E);
  background-size: 200% 200%;
  animation: gradientShift 6s ease infinite;
  border: 3px solid #2B2B2B;
  box-shadow: 10px 10px 0 #2B2B2B;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '🩸';
  position: absolute;
  font-size: 3rem;
  top: 20px;
  left: 30px;
  opacity: 0.3;
  animation: bubbleFloat 3s ease-in-out infinite;
}

.cta-banner::after {
  content: '💬';
  position: absolute;
  font-size: 2.5rem;
  bottom: 24px;
  right: 32px;
  opacity: 0.3;
  animation: bubbleFloat 4s ease-in-out 0.5s infinite;
}

.cta-banner h2 {
  color: #fff;
  font-size: 2.4rem;
  font-weight: 900;
  margin-bottom: 16px;
  letter-spacing: -1px;
  position: relative;
  z-index: 1;
  text-shadow: 3px 3px 0 rgba(43, 43, 43, 0.35);
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1rem;
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.cta-banner .btn-primary {
  background: #fff;
  color: #FF4D5E;
  border-color: #2B2B2B;
  box-shadow: 5px 5px 0 #2B2B2B;
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary:hover {
  box-shadow: 8px 8px 0 #2B2B2B;
  transform: translate(-2px, -2px);
  background: #FFF8F0;
}

/* 页脚 */
.site-footer {
  padding: 64px 0 30px;
  background: #FFF0E8;
  border-top: 3px solid #2B2B2B;
  color: #2B2B2B;
}

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

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

.footer-brand {
  position: relative;
}

.footer-brand .logo {
  margin-bottom: 16px;
  font-size: 1.35rem;
}

.footer-brand p {
  opacity: 0.65;
  font-size: 0.88rem;
  line-height: 1.8;
  max-width: 300px;
}

.footer-col h4 {
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  margin-bottom: 20px;
  color: #2B2B2B;
  position: relative;
  display: inline-block;
  padding-bottom: 8px;
  border-bottom: 3px solid #FF4D5E;
}

.footer-col a {
  display: block;
  color: rgba(43, 43, 43, 0.75);
  font-size: 0.9rem;
  text-decoration: none;
  padding: 5px 0;
  transition: all 0.2s ease;
}

.footer-col a:hover {
  color: #FF4D5E;
  transform: translateX(4px);
  font-weight: 600;
}

.footer-bottom {
  border-top: 2px solid #E8D0C8;
  margin-top: 44px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.6;
}

/* 工具类 */
.text-accent {
  color: #FF4D5E;
  font-weight: 800;
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.7;
  text-align: center;
  font-size: 1rem;
  line-height: 1.8;
}

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

/* ============================================
   自定义动画和装饰
   ============================================ */

@keyframes floatComment {
  0%, 100% { transform: translate(0, 0) rotate(-2deg); }
  50% { transform: translate(-8px, -10px) rotate(2deg); }
}

@keyframes emojiPulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1) rotate(-3deg); }
  50% { transform: translate(-50%, -50%) scale(1.08) rotate(3deg); }
}

@keyframes badgeWiggle {
  0%, 100% { transform: rotate(-2deg); }
  50% { transform: rotate(2deg) translateY(-2px); }
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 0.72; transform: translateY(0); }
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

@keyframes bubbleFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-12px) rotate(2deg); }
}

/* 装饰性圆点 */
.section:not(:first-child)::before {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2.5px solid #2B2B2B;
  background: #FFD166;
  top: -9px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  box-shadow: 0 0 0 2px #FFF9F0;
}

/* 响应式 */
@media (max-width: 900px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  
  .hero {
    padding-top: 110px;
    padding-bottom: 50px;
  }
  
  .hero-image {
    min-height: 320px;
  }
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 3rem;
  }

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

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 74px;
    left: 0;
    width: 100%;
    background: rgba(255, 249, 240, 0.98);
    padding: 24px;
    border-bottom: 3px solid #2B2B2B;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
    gap: 8px;
    align-items: stretch;
  }

  .main-nav.open li {
    width: 100%;
  }

  .main-nav.open a {
    display: block;
    padding: 14px 16px;
    font-size: 1.05rem;
    border-radius: 12px;
    border: none;
  }

  .main-nav.open a:hover {
    background: #FFF0E8;
    border: none;
  }

  .nav-cta {
    display: inline-flex !important;
    margin-top: 4px;
    justify-content: center;
    border: 2.5px solid #2B2B2B !important;
  }

  .section-title {
    font-size: 2.1rem;
  }

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

  .cta-banner h2 {
    font-size: 1.9rem;
  }
}

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

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

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

  .hero h1 {
    font-size: 2.3rem;
    letter-spacing: -1px;
  }

  .hero p {
    font-size: 0.98rem;
  }

  .section {
    padding: 60px 0;
  }

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

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

  .hero-image {
    min-height: 260px;
  }

  .hero-image::before {
    font-size: 4rem;
  }

  .hero-image::after {
    font-size: 0.7rem;
    padding: 6px 12px;
    left: -8px;
  }

  .feature-image {
    min-height: 220px;
  }

  .feature-image::before {
    font-size: 3.5rem;
  }

  .cta-banner h2 {
    font-size: 1.5rem;
  }

  .cta-banner {
    padding: 40px 16px;
    box-shadow: 6px 6px 0 #2B2B2B;
  }
}

/* 打印优化 */
@media print {
  .site-header {
    position: static;
    border-bottom: 1px solid #2B2B2B;
  }
  .hero {
    min-height: auto;
    padding: 40px 0;
  }
  .btn, .nav-cta, .menu-toggle {
    display: none !important;
  }
}