:root {
  --bg: #FBF8F4;
  --bg-alt: #EAF3F1;
  --primary: #FF5A3C;
  --primary-dark: #E64628;
  --teal: #00B894;
  --yellow: #FFC845;
  --ink: #2B2621;
  --muted: rgba(43,38,33,0.62);
  --border: #EAE3DC;
  --card: #FFFFFF;
  --shadow: rgba(43,38,33,0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--yellow);
  color: var(--ink);
}

::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg);
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--primary), var(--teal));
  border-radius: 6px;
}

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

.section {
  padding: 96px 0;
  position: relative;
}

.section:nth-child(even) {
  background: var(--bg-alt);
}

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(251,248,244,0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(43,38,33,0.06);
  transition: box-shadow 0.3s;
}

.site-header:hover {
  box-shadow: 0 6px 24px rgba(43,38,33,0.05);
}

.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: 10px;
  font-weight: 800;
  font-size: 1.25rem;
  text-decoration: none;
  color: var(--ink);
  letter-spacing: -0.3px;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  background: linear-gradient(135deg, var(--primary), var(--yellow));
  color: #fff;
  box-shadow: 0 4px 12px rgba(255,90,60,0.25);
  transform: rotate(-6deg);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ink);
  position: relative;
  transition: color 0.25s;
  letter-spacing: 0.2px;
}

.main-nav a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--teal));
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s cubic-bezier(0.65, 0.05, 0.36, 1);
}

.main-nav a:not(.nav-cta):hover {
  color: var(--primary);
}

.main-nav a:not(.nav-cta):hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-cta {
  padding: 10px 22px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), #FF7C5C);
  color: #fff !important;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(255,90,60,0.25);
  transition: all 0.3s;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255,90,60,0.35);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 12px;
  background: var(--primary);
  cursor: pointer;
  position: relative;
  transition: background 0.3s;
}

.menu-toggle::before,
.menu-toggle::after {
  content: '';
  position: absolute;
  left: 13px;
  right: 13px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
}

.menu-toggle::before {
  top: 16px;
  box-shadow: 0 7px 0 #fff;
}

.menu-toggle::after {
  bottom: 16px;
}

/* ===== Hero ===== */
.hero {
  min-height: 88vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(600px at 88% 30%, rgba(0,184,148,0.14), transparent 62%),
    radial-gradient(520px at 12% 80%, rgba(255,200,69,0.18), transparent 60%),
    linear-gradient(140deg, #FDEDE4 0%, var(--bg) 55%, var(--bg-alt) 100%);
}

.hero::before {
  content: '';
  position: absolute;
  top: -160px;
  right: -160px;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  border: 42px solid rgba(255,90,60,0.06);
}

.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: repeating-linear-gradient(45deg, rgba(43,38,33,0.015) 0, rgba(43,38,33,0.015) 1px, transparent 1px, transparent 14px);
  pointer-events: none;
}

.hero-content {
  max-width: 640px;
  position: relative;
  z-index: 2;
  flex: 1.2;
  animation: heroIn 0.9s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.hero-image {
  position: relative;
  z-index: 2;
  flex: 0 0 42%;
  margin-left: 60px;
  border-radius: 24px;
  transform: rotate(1.8deg) translateY(8px);
  box-shadow:
    10px 14px 0 0 var(--yellow),
    0 24px 50px rgba(43,38,33,0.12);
  overflow: hidden;
  animation: heroIn 1s 0.1s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.hero-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,90,60,0.06), transparent 50%);
  border-radius: 24px;
  pointer-events: none;
}

.hero-image img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 30px;
  margin-bottom: 18px;
  background: var(--yellow);
  color: var(--ink);
  letter-spacing: 1.5px;
  position: relative;
  box-shadow: 0 2px 8px rgba(255,200,69,0.4);
}

.hero h1 {
  font-size: 3.1rem;
  line-height: 1.15;
  margin-bottom: 22px;
  font-weight: 900;
  letter-spacing: -1px;
  background: linear-gradient(105deg, var(--primary) 20%, var(--teal) 55%, var(--yellow) 80%);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientFlow 6s ease infinite;
}

.hero p {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 480px;
  margin-bottom: 34px;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 14px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: 14px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
  font-size: 0.95rem;
  letter-spacing: 0.3px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #FF7C5C);
  color: #fff;
  box-shadow: 0 6px 18px rgba(255,90,60,0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(255,90,60,0.4);
}

.btn-outline {
  background: rgba(255,255,255,0.6);
  border: 1.5px solid var(--primary);
  color: var(--primary);
  backdrop-filter: blur(4px);
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(255,90,60,0.25);
}

/* ===== 标签 / 标题 ===== */
.section-label {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 3px;
  margin-bottom: 14px;
  text-transform: uppercase;
  color: var(--primary);
  position: relative;
  padding-left: 30px;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 20px;
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--primary), var(--yellow));
  transform: translateY(-50%);
}

.section-title {
  font-size: 2.3rem;
  margin-bottom: 14px;
  font-weight: 900;
  letter-spacing: -0.5px;
  line-height: 1.2;
}

.section-desc {
  max-width: 600px;
  color: var(--muted);
  margin-bottom: 44px;
  line-height: 1.7;
}

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

.category-card {
  background: var(--card);
  border-radius: 18px 18px 18px 6px;
  padding: 30px 28px;
  border: 1px solid var(--border);
  position: relative;
  transition: all 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--yellow));
  border-radius: 18px 18px 0 0;
  opacity: 0.7;
}

.category-card::after {
  content: '';
  position: absolute;
  top: 16px;
  right: 16px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: -14px 0 0 rgba(0,184,148,0.25);
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 32px var(--shadow);
  border-color: rgba(255,90,60,0.2);
}

.card-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.4rem;
  background: linear-gradient(135deg, var(--bg-alt), var(--bg));
  transition: transform 0.3s;
}

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

.card-link {
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--primary);
  display: inline-block;
  margin-top: 12px;
  position: relative;
}

.card-link::after {
  content: '→';
  margin-left: 4px;
  transition: transform 0.3s;
  display: inline-block;
}

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

/* ===== 特性块 ===== */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: center;
}

.feature-image {
  border-radius: 20px;
  overflow: hidden;
  position: relative;
  box-shadow: 12px 12px 0 0 var(--teal);
  transform: rotate(-1.5deg);
  transition: transform 0.4s;
}

.feature-image:hover {
  transform: rotate(0deg) scale(1.01);
}

.feature-image img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  aspect-ratio: 5 / 4;
}

.feature-text {
  padding: 10px 0;
}

.feature-list {
  list-style: none;
  margin-top: 20px;
}

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  color: rgba(43,38,33,0.82);
}

.feature-list li::before {
  content: '✓';
  font-weight: 900;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--teal);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
}

/* ===== 数据条 ===== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  text-align: center;
}

.stat-item {
  background: var(--card);
  padding: 30px 20px;
  border-radius: 18px;
  border: 1px solid var(--border);
  position: relative;
  transition: all 0.3s;
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px var(--shadow);
}

.stat-item::before {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 36px;
  height: 6px;
  border-radius: 3px;
  background: var(--yellow);
}

.stat-number {
  font-size: 2.6rem;
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, var(--primary), var(--teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -1px;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--muted);
  margin-top: 8px;
  font-weight: 500;
}

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

.content-wall-item {
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--card);
  transition: all 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  position: relative;
}

.content-wall-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 16px 36px var(--shadow);
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.5s;
}

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

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

.content-wall-body::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 22px;
  right: 22px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--teal));
  border-radius: 0 0 4px 4px;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.3s;
}

.faq-item:hover {
  border-color: rgba(255,90,60,0.3);
}

.faq-item .faq-question {
  padding: 18px 24px;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.98rem;
  color: var(--ink);
  position: relative;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--primary);
  transition: transform 0.3s;
  flex-shrink: 0;
  margin-left: 20px;
}

.faq-item.open {
  border-color: rgba(255,90,60,0.4);
  box-shadow: 0 8px 20px rgba(43,38,33,0.05);
}

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

.faq-item .faq-answer {
  padding: 0 24px 18px;
  display: none;
  color: var(--muted);
  line-height: 1.7;
  font-size: 0.9rem;
  border-top: 1px dashed var(--border);
  padding-top: 14px;
  margin-top: 2px;
}

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

/* ===== CTA横幅 ===== */
.cta-banner {
  padding: 64px 48px;
  text-align: center;
  border-radius: 24px;
  background: linear-gradient(135deg, var(--primary) 0%, #FF7C5C 50%, var(--yellow) 140%);
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 48px rgba(255,90,60,0.35);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(255,255,255,0.12);
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(0,184,148,0.2);
}

.cta-banner h2 {
  color: #fff;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
  font-size: 2.1rem;
  font-weight: 800;
}

.cta-banner p {
  position: relative;
  z-index: 1;
  opacity: 0.85;
  margin-bottom: 28px;
  font-size: 1rem;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 6px 18px rgba(0,0,0,0.12);
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 12px 30px rgba(0,0,0,0.18);
}

/* ===== 页脚 ===== */
.site-footer {
  padding: 64px 0 28px;
  background: #F1EDE6;
  border-top: 1px solid var(--border);
  color: var(--ink);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 52px;
}

.footer-brand {
  position: relative;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.7;
  max-width: 260px;
}

.footer-col h4 {
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 18px;
  color: var(--primary);
}

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

.footer-col ul li {
  margin-bottom: 8px;
}

.site-footer a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.88rem;
  transition: all 0.2s;
  opacity: 0.85;
}

.site-footer a:hover {
  color: var(--primary);
  opacity: 1;
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(43,38,33,0.12);
  margin-top: 44px;
  padding-top: 22px;
  text-align: center;
  font-size: 0.83rem;
  color: var(--muted);
}

/* ===== 工具类 ===== */
.text-accent {
  color: var(--primary);
  font-weight: 700;
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  color: var(--muted);
  line-height: 1.7;
}

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

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

/* ===== 动画 ===== */
@keyframes heroIn {
  0% {
    opacity: 0;
    transform: translateY(28px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  0% {
    opacity: 0;
    transform: translateY(-8px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* ===== 响应式 ===== */
@media (max-width: 968px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding: 120px 0 60px;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero p {
    margin-left: auto;
    margin-right: auto;
  }

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

  .hero-image {
    margin: 48px auto 0;
    width: 100%;
    max-width: 480px;
  }

  .feature-block {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .cta-banner {
    padding: 52px 32px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 68px 0;
  }

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

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }

  .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: 72px;
    left: 0;
    width: 100%;
    background: var(--bg);
    padding: 24px;
    gap: 16px;
    box-shadow: 0 20px 40px rgba(43,38,33,0.08);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(14px);
  }

  .main-nav.open a {
    padding: 8px 0;
    font-size: 1rem;
  }

  .hero h1 {
    font-size: 2.3rem;
  }

  .hero-image {
    margin-top: 36px;
  }
}

@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;
    align-items: center;
  }

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

  .hero {
    min-height: auto;
    padding-top: 110px;
  }

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

  .section-title {
    font-size: 1.7rem;
  }

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

  .cta-banner {
    padding: 44px 24px;
    border-radius: 18px;
  }

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