:root {
  --primary: #FF7A5C;
  --primary-dark: #F05A3C;
  --primary-light: #FFA894;
  --secondary: #3EC8BE;
  --tertiary: #FFC65C;
  --bg-main: #FFF9F5;
  --bg-alt: #FFF1E8;
  --card-bg: rgba(255, 255, 255, 0.72);
  --text-main: #3B3530;
  --text-soft: #7A6E68;
  --shadow-soft: 0 8px 32px rgba(255, 122, 92, 0.1);
  --shadow-hover: 0 20px 50px rgba(255, 122, 92, 0.18);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 10px;
  --transition-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background: var(--bg-main);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

body::before {
  content: '';
  position: fixed;
  top: -20%;
  right: -15%;
  width: 700px;
  height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 122, 92, 0.05) 0%, transparent 60%);
  z-index: -1;
  pointer-events: none;
}

body::after {
  content: '';
  position: fixed;
  bottom: -15%;
  left: -15%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(62, 200, 190, 0.04) 0%, transparent 60%);
  z-index: -1;
  pointer-events: none;
}

::selection {
  background: var(--primary);
  color: #fff;
}

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg-main); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--primary), var(--tertiary));
  border-radius: 10px;
}

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

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

.section:nth-child(even) {
  background: linear-gradient(180deg, var(--bg-main) 0%, var(--bg-alt) 100%);
}

.section::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 70%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 122, 92, 0.12), transparent);
}

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 249, 245, 0.86);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow: 0 4px 32px rgba(255, 122, 92, 0.05);
}

.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: 800;
  font-size: 1.3rem;
  text-decoration: none;
  color: var(--text-main);
  letter-spacing: -0.5px;
  transition: opacity 0.3s;
}

.logo:hover { opacity: 0.85; }

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  background: linear-gradient(135deg, var(--primary), var(--tertiary));
  color: #fff;
  box-shadow: 0 4px 16px rgba(255, 122, 92, 0.35);
  transition: transform 0.3s var(--transition-bounce);
}

.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: 500;
  color: var(--text-soft);
  transition: color 0.3s;
  position: relative;
  padding: 6px 0;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2.5px;
  background: linear-gradient(90deg, var(--primary), var(--tertiary));
  transition: width 0.35s ease;
  border-radius: 4px;
}

.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: 600;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  box-shadow: 0 4px 20px rgba(255, 122, 92, 0.35);
  transition: all 0.3s ease;
}

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

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(255, 122, 92, 0.45);
  color: #fff;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  border: 1px solid rgba(255, 122, 92, 0.2);
  background: rgba(255, 255, 255, 0.7);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.3rem;
  color: var(--primary);
  transition: all 0.3s;
}

.menu-toggle:hover {
  background: rgba(255, 122, 92, 0.1);
}

.menu-toggle::before {
  content: '☰';
}

.menu-toggle.open::before {
  content: '✕';
}

/* ===== Hero ===== */
.hero {
  min-height: 75vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 64px;
  padding: 140px 0 80px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--bg-main) 0%, var(--bg-alt) 100%);
}

.hero::before {
  content: '';
  position: absolute;
  top: 5%;
  right: -10%;
  width: 50%;
  height: 90%;
  background: linear-gradient(135deg, rgba(255, 122, 92, 0.07), rgba(62, 200, 190, 0.05));
  border-radius: 60% 40% 70% 30% / 50% 60% 40% 50%;
  z-index: 0;
  animation: blobFloat 12s ease-in-out infinite alternate;
}

@keyframes blobFloat {
  0% { border-radius: 60% 40% 70% 30% / 50% 60% 40% 50%; transform: rotate(0deg); }
  100% { border-radius: 30% 70% 40% 60% / 60% 40% 60% 40%; transform: rotate(6deg); }
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 30%;
  background: linear-gradient(180deg, transparent, rgba(255, 240, 232, 0.4));
  pointer-events: none;
  z-index: 1;
}

.hero-content {
  max-width: 640px;
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 7px 18px;
  border-radius: 50px;
  margin-bottom: 24px;
  background: rgba(255, 122, 92, 0.08);
  color: var(--primary-dark);
  border: 1px solid rgba(255, 122, 92, 0.15);
  letter-spacing: 0.5px;
}

.hero-eyebrow::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 122, 92, 0.2);
}

.hero h1 {
  font-size: 3.4rem;
  line-height: 1.12;
  margin-bottom: 24px;
  font-weight: 800;
  letter-spacing: -2px;
  color: var(--text-main);
}

.hero h1 .text-gradient {
  background: linear-gradient(135deg, var(--primary) 20%, var(--tertiary) 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  opacity: 0.75;
  max-width: 540px;
  margin-bottom: 36px;
  line-height: 1.75;
  color: var(--text-soft);
}

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

.hero-image {
  border-radius: 32px 12px 32px 140px;
  overflow: hidden;
  position: relative;
  z-index: 2;
  box-shadow: 0 24px 60px rgba(255, 122, 92, 0.18), 0 4px 12px rgba(255, 122, 92, 0.08);
  transform: rotate(1.5deg);
  transition: transform 0.5s var(--transition-bounce);
  flex-shrink: 0;
  width: 42%;
  border: 4px solid rgba(255, 255, 255, 0.6);
}

.hero-image:hover {
  transform: rotate(0deg) scale(1.02);
}

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

.hero-image::after {
  content: '';
  position: absolute;
  top: -24px;
  right: -24px;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: var(--secondary);
  opacity: 0.25;
  filter: blur(4px);
  z-index: -1;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.3s var(--transition-bounce);
  font-size: 0.95rem;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  box-shadow: 0 8px 24px rgba(255, 122, 92, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 36px rgba(255, 122, 92, 0.42);
}

.btn-primary:active {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(255, 122, 92, 0.3);
}

.btn-outline {
  background: transparent;
  border: 2px solid rgba(255, 122, 92, 0.6);
  color: var(--primary);
}

.btn-outline:hover {
  background: rgba(255, 122, 92, 0.08);
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(255, 122, 92, 0.1);
}

/* ===== 标签/标题 ===== */
.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 16px;
  color: var(--primary);
  position: relative;
  padding-bottom: 8px;
}

.section-label::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 42px;
  height: 2.5px;
  background: linear-gradient(90deg, var(--primary), var(--tertiary));
  border-radius: 4px;
}

.section-label.text-center {
  padding-bottom: 8px;
}

.section-label.text-center::after {
  left: 50%;
  transform: translateX(-50%);
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 16px;
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.2;
  color: var(--text-main);
}

.section-desc {
  max-width: 620px;
  opacity: 0.7;
  margin-bottom: 48px;
  color: var(--text-soft);
  line-height: 1.75;
  font-size: 1.05rem;
}

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

.category-card {
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  border: 1px solid rgba(255, 255, 255, 0.85);
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-soft);
  transition: all 0.4s var(--transition-bounce);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary), var(--tertiary));
  opacity: 0;
  transition: opacity 0.4s ease;
}

.category-card::after {
  content: '';
  position: absolute;
  top: 18px;
  right: 18px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--tertiary), var(--primary));
  opacity: 0.5;
  transition: opacity 0.3s, transform 0.3s;
}

.category-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(255, 122, 92, 0.18);
}

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

.category-card:hover::after {
  opacity: 1;
  transform: scale(1.3);
}

.card-icon {
  width: 58px;
  height: 58px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  font-size: 1.6rem;
  background: linear-gradient(135deg, #FFF1E8, #FFE4D6);
  box-shadow: 0 4px 14px rgba(255, 122, 92, 0.1);
  transition: transform 0.3s var(--transition-bounce);
}

.category-card:hover .card-icon {
  transform: scale(1.1) rotate(-6deg);
}

.category-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-main);
}

.category-card p {
  font-size: 0.9rem;
  color: var(--text-soft);
  line-height: 1.6;
  margin-bottom: 16px;
}

.card-link {
  font-weight: 600;
  font-size: 0.88rem;
  text-decoration: none;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.3s ease, color 0.3s;
}

.card-link::after {
  content: '→';
  font-size: 1rem;
}

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

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

.feature-image {
  border-radius: 28px 12px 28px 60px;
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-hover);
  border: 3px solid rgba(255, 255, 255, 0.7);
}

.feature-image::before {
  content: '';
  position: absolute;
  top: -14px;
  left: -14px;
  width: 70px;
  height: 70px;
  border-top: 3px solid var(--primary);
  border-left: 3px solid var(--primary);
  border-radius: 14px 0 0 0;
  z-index: 2;
  opacity: 0.5;
  transition: opacity 0.3s, transform 0.3s;
}

.feature-image:hover::before {
  opacity: 1;
  transform: scale(1.05);
}

.feature-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.6s ease;
}

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

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

.feature-text h2 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 16px;
  color: var(--text-main);
}

.feature-text p {
  color: var(--text-soft);
  line-height: 1.7;
  margin-bottom: 20px;
  font-size: 1rem;
}

.feature-list {
  list-style: none;
  margin-top: 8px;
}

.feature-list li {
  padding: 10px 0;
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.95rem;
  color: #4A443E;
  transition: transform 0.3s;
}

.feature-list li:hover {
  transform: translateX(4px);
}

.feature-list li::before {
  content: '✓';
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--secondary), #2DAA9F);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  flex-shrink: 0;
  box-shadow: 0 3px 10px rgba(62, 200, 190, 0.35);
  transition: transform 0.3s;
}

.feature-list li:hover::before {
  transform: scale(1.15) rotate(360deg);
}

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

.stat-item {
  padding: 36px 24px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.85);
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-soft);
  transition: all 0.4s var(--transition-bounce);
  position: relative;
  overflow: hidden;
}

.stat-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 0;
  background: linear-gradient(180deg, transparent, rgba(255, 122, 92, 0.06));
  transition: height 0.4s ease;
}

.stat-item:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: var(--shadow-hover);
}

.stat-item:hover::after {
  height: 100%;
}

.stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary) 0%, var(--tertiary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -1px;
  line-height: 1.1;
  display: inline-block;
}

.stat-label {
  font-size: 0.92rem;
  opacity: 0.6;
  margin-top: 10px;
  color: var(--text-soft);
  font-weight: 500;
  letter-spacing: 0.3px;
}

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

.content-wall-item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.85);
  background: #fff;
  box-shadow: var(--shadow-soft);
  transition: all 0.4s var(--transition-bounce);
  position: relative;
}

.content-wall-item:hover {
  transform: translateY(-8px) scale(1.01);
  box-shadow: var(--shadow-hover);
  border-color: rgba(255, 122, 92, 0.15);
}

.content-wall-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.content-wall-item:hover img {
  transform: scale(1.06);
}

.content-wall-body {
  padding: 24px 24px 28px;
  position: relative;
}

.content-wall-body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 24px;
  right: 24px;
  height: 1px;
  background: linear-gradient(90deg, rgba(255, 122, 92, 0.3), transparent);
}

.content-wall-body h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-main);
  transition: color 0.3s;
}

.content-wall-item:hover .content-wall-body h3 {
  color: var(--primary);
}

.content-wall-body p {
  font-size: 0.9rem;
  color: var(--text-soft);
  line-height: 1.6;
  margin-bottom: 12px;
}

.content-wall-body .meta {
  font-size: 0.8rem;
  color: rgba(255, 122, 92, 0.8);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

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

.faq-item {
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  cursor: pointer;
  background: #fff;
  box-shadow: 0 4px 18px rgba(255, 122, 92, 0.05);
  transition: all 0.3s ease;
}

.faq-item:hover {
  border-color: rgba(255, 122, 92, 0.2);
  box-shadow: 0 6px 24px rgba(255, 122, 92, 0.08);
}

.faq-item.open {
  border-color: rgba(255, 122, 92, 0.25);
  box-shadow: 0 10px 30px rgba(255, 122, 92, 0.1);
}

.faq-item .faq-question {
  padding: 20px 24px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-main);
  font-size: 1.02rem;
  transition: color 0.3s;
  user-select: none;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--primary);
  transition: transform 0.4s ease, color 0.3s;
  flex-shrink: 0;
  margin-left: 16px;
  line-height: 1;
}

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

.faq-item.open .faq-question {
  color: var(--primary);
}

.faq-item .faq-answer {
  padding: 0 24px 22px;
  display: none;
  color: var(--text-soft);
  line-height: 1.7;
  font-size: 0.95rem;
  border-top: 1px solid rgba(255, 122, 92, 0.06);
  padding-top: 14px;
}

.faq-item.open .faq-answer {
  display: block;
  animation: faqFade 0.35s ease;
}

@keyframes faqFade {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== CTA横幅 ===== */
.cta-banner {
  padding: 68px 48px;
  text-align: center;
  border-radius: var(--radius-xl);
  color: #fff;
  background: linear-gradient(135deg, #FF7A5C 0%, #F05A3C 45%, #FFB347 100%);
  position: relative;
  overflow: hidden;
  box-shadow: 0 24px 70px rgba(255, 122, 92, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -10%;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  transition: transform 0.6s ease;
}

.cta-banner:hover::before {
  transform: scale(1.1);
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -50%;
  left: 15%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
}

.cta-banner h2 {
  color: #fff;
  font-size: 2.2rem;
  margin-bottom: 12px;
  position: relative;
  z-index: 2;
  font-weight: 800;
  letter-spacing: -1px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: 36px;
  position: relative;
  z-index: 2;
  font-size: 1.05rem;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.12);
  position: relative;
  z-index: 2;
  font-weight: 700;
}

.cta-banner .btn-primary:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.18);
}

/* ===== 页脚 ===== */
.site-footer {
  padding: 72px 0 32px;
  background: linear-gradient(180deg, var(--bg-main) 0%, var(--bg-alt) 100%);
  margin-top: 60px;
  border-top: 1px solid rgba(255, 122, 92, 0.08);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 40%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  border-radius: 2px;
}

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

.footer-brand {
  padding-right: 32px;
}

.footer-brand .logo {
  margin-bottom: 20px;
}

.footer-brand > p {
  font-size: 0.9rem;
  color: var(--text-soft);
  line-height: 1.7;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-main);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  position: relative;
  padding-bottom: 8px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--tertiary));
  border-radius: 2px;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul a {
  text-decoration: none;
  color: var(--text-soft);
  font-size: 0.9rem;
  transition: all 0.3s ease;
  display: inline-block;
}

.footer-col ul a:hover {
  color: var(--primary);
  padding-left: 6px;
  transform: translateX(2px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 122, 92, 0.1);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-soft);
  letter-spacing: 0.3px;
}

.footer-bottom a {
  color: var(--primary);
  text-decoration: none;
}

.footer-bottom a:hover {
  text-decoration: underline;
}

/* ===== 工具类 ===== */
.text-accent {
  color: var(--primary);
  font-weight: 600;
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 56px;
  opacity: 0.75;
  color: var(--text-soft);
  line-height: 1.7;
  font-size: 1.05rem;
}

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

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .hero {
    flex-direction: column;
    text-align: center;
    gap: 48px;
    padding: 120px 0 60px;
  }
  .hero-content {
    max-width: 100%;
  }
  .hero p {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-buttons {
    justify-content: center;
  }
  .hero-image {
    width: 80%;
  }
  .feature-block {
    gap: 40px;
  }
  .section-title {
    font-size: 2rem;
  }
  .hero h1 {
    font-size: 2.8rem;
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
    gap: 20px;
  }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: rgba(255, 249, 245, 0.98);
    backdrop-filter: blur(20px);
    padding: 24px 24px 32px;
    border-bottom: 1px solid rgba(255, 122, 92, 0.1);
    box-shadow: 0 20px 40px rgba(255, 122, 92, 0.08);
    gap: 20px;
  }
  .main-nav.open a {
    font-size: 1.1rem;
    padding: 10px 0;
  }
  .main-nav.open .nav-cta {
    display: inline-flex;
    justify-content: center;
    margin-top: 8px;
  }
  .menu-toggle {
    display: flex;
  }
  .feature-block {
    grid-template-columns: 1fr;
  }
  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
  .hero {
    padding: 110px 0 50px;
  }
  .hero h1 {
    font-size: 2.2rem;
  }
  .hero p {
    font-size: 1rem;
  }
  .section {
    padding: 64px 0;
  }
  .section-title {
    font-size: 1.8rem;
  }
  .cta-banner {
    padding: 48px 24px;
  }
  .cta-banner h2 {
    font-size: 1.8rem;
  }
}

@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  .hero-buttons .btn {
    width: 100%;
    justify-content: center;
  }
  .hero h1 {
    font-size: 1.9rem;
    letter-spacing: -1px;
  }
  .hero-image {
    width: 100%;
  }
  .section-title {
    font-size: 1.6rem;
  }
  .stat-number {
    font-size: 2.2rem;
  }
  .cta-banner {
    padding: 40px 20px;
    border-radius: 24px;
  }
  .cta-banner h2 {
    font-size: 1.5rem;
  }
  .cta-banner p {
    font-size: 0.95rem;
  }
  .feature-image {
    border-radius: 20px 8px 20px 40px;
  }
  .site-footer {
    padding: 48px 0 24px;
  }
}

/* ===== 动画增强 ===== */
@media (prefers-reduced-motion: no-preference) {
  .category-card, .content-wall-item, .stat-item {
    animation: cardIn 0.6s ease both;
  }
  .category-card:nth-child(2), .content-wall-item:nth-child(2), .stat-item:nth-child(2) {
    animation-delay: 0.08s;
  }
  .category-card:nth-child(3), .content-wall-item:nth-child(3), .stat-item:nth-child(3) {
    animation-delay: 0.16s;
  }
  .category-card:nth-child(4), .content-wall-item:nth-child(4), .stat-item:nth-child(4) {
    animation-delay: 0.24s;
  }
}

@keyframes cardIn {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}