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

:root {
  --melon-red: #ff4e5e;
  --melon-red-dark: #e63946;
  --melon-green: #00b894;
  --melon-green-dark: #008c69;
  --melon-mint: #d5f5e3;
  --melon-cream: #fff9f5;
  --melon-pink: #ffe3e8;
  --melon-yellow: #ffd166;
  --melon-seed: #2d3436;
  --melon-gray: #6b7a72;
  --melon-border: #efe5df;
  --shadow-soft: 0 10px 40px rgba(255, 78, 94, 0.12);
  --shadow-hover: 0 18px 50px rgba(255, 78, 94, 0.2);
  --shadow-green: 0 12px 36px rgba(0, 184, 148, 0.15);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
  overflow-x: hidden;
  background-color: var(--melon-cream);
  color: var(--melon-seed);
  line-height: 1.6;
  background-image:
    radial-gradient(circle at 10% 20%, rgba(255, 78, 94, 0.035) 6px, transparent 6px),
    radial-gradient(circle at 90% 70%, rgba(0, 184, 148, 0.035) 8px, transparent 8px),
    radial-gradient(circle at 50% 90%, rgba(255, 209, 102, 0.03) 4px, transparent 4px);
  background-size: 180px 180px, 220px 220px, 150px 150px;
  background-attachment: fixed;
}

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

::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--melon-cream);
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--melon-red), var(--melon-green));
  border-radius: 12px;
}

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

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

.section:nth-child(even) {
  background: linear-gradient(180deg, #f8fff9 0%, var(--melon-mint) 45%, #f8fff9 100%);
}

/* ========== 导航 ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 249, 245, 0.92);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 2px solid rgba(0, 184, 148, 0.15);
}

.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: 1.25rem;
  text-decoration: none;
  color: var(--melon-seed);
  letter-spacing: -0.02em;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  background:
    radial-gradient(circle at 50% 50%, var(--melon-red) 0%, var(--melon-red) 45%, var(--melon-cream) 48%, var(--melon-green) 55%);
  box-shadow: 0 4px 14px rgba(255, 78, 94, 0.25);
  position: relative;
}

.logo-icon::before {
  content: '';
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  opacity: 0.5;
  background-image:
    radial-gradient(circle 2px at 40% 40%, var(--melon-seed) 60%, transparent 60%),
    radial-gradient(circle 2px at 60% 50%, var(--melon-seed) 60%, transparent 60%),
    radial-gradient(circle 2px at 45% 65%, var(--melon-seed) 60%, transparent 60%);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--melon-seed);
  position: relative;
  padding: 6px 0;
  transition: color 0.25s;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--melon-red), var(--melon-green));
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s cubic-bezier(0.65, 0, 0.35, 1);
}

.main-nav a:hover {
  color: var(--melon-red);
}

.main-nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-cta {
  padding: 10px 24px !important;
  border-radius: 50px !important;
  color: #fff !important;
  font-weight: 600 !important;
  background: linear-gradient(135deg, var(--melon-red) 0%, var(--melon-green) 100%);
  box-shadow: var(--shadow-soft);
  transition: transform 0.25s, box-shadow 0.25s !important;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover) !important;
}

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

.menu-toggle {
  display: none;
}

/* ========== Hero ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
  flex-wrap: wrap;
  padding-top: 72px;
  overflow: hidden;
  background:
    radial-gradient(ellipse 800px 400px at 85% 20%, rgba(255, 227, 232, 0.6) 0%, transparent 60%),
    radial-gradient(ellipse 600px 400px at 10% 90%, rgba(213, 245, 227, 0.6) 0%, transparent 50%),
    linear-gradient(135deg, #fffdf9 0%, #fff3f5 55%, #f0fbf6 100%);
}

.hero::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -120px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  border: 40px solid rgba(0, 184, 148, 0.08);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -160px;
  left: -160px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  border: 60px solid rgba(255, 78, 94, 0.06);
  pointer-events: none;
}

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

.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 8px 20px;
  border-radius: 50px;
  background: var(--melon-green);
  color: #fff;
  letter-spacing: 0.05em;
  margin-bottom: 24px;
  box-shadow: 0 8px 24px rgba(0, 184, 148, 0.25);
  text-transform: uppercase;
}

.hero-eyebrow::before {
  content: '🍉 ';
  font-size: 0.9rem;
}

.hero h1 {
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.03em;
  color: var(--melon-seed);
  background: linear-gradient(120deg, var(--melon-red) 0%, var(--melon-red-dark) 45%, var(--melon-green) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
}

.hero h1::after {
  content: '';
  display: block;
  width: 140px;
  height: 8px;
  margin-top: 16px;
  border-radius: 10px;
  background: linear-gradient(90deg, var(--melon-red) 0%, var(--melon-red) 40%, var(--melon-yellow) 40%, var(--melon-yellow) 60%, var(--melon-green) 60%);
}

.hero p {
  font-size: 1.12rem;
  color: var(--melon-gray);
  opacity: 0.9;
  max-width: 520px;
  margin-bottom: 36px;
  line-height: 1.7;
}

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

.hero-image {
  position: relative;
  flex-shrink: 0;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  overflow: hidden;
  background:
    radial-gradient(circle at 22% 25%, rgba(255, 255, 255, 0.4) 0%, transparent 40%),
    radial-gradient(circle at 80% 80%, rgba(0, 0, 0, 0.12) 0%, transparent 50%),
    radial-gradient(circle, var(--melon-red) 0%, var(--melon-red-dark) 38%, var(--melon-cream) 42%, var(--melon-green) 48%, var(--melon-green-dark) 78%);
  border: 10px solid var(--melon-green);
  box-shadow:
    0 40px 80px rgba(255, 78, 94, 0.18),
    0 20px 40px rgba(0, 184, 148, 0.12);
  transform: rotate(-8deg);
  animation: gentlyFloat 6s ease-in-out infinite;
  z-index: 2;
}

@keyframes gentlyFloat {
  0%, 100% { transform: rotate(-8deg) translateY(0); }
  50% { transform: rotate(-4deg) translateY(-10px); }
}

.hero-image::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background-image:
    radial-gradient(circle 5px at 28% 35%, rgba(45, 52, 54, 0.6) 55%, transparent 60%),
    radial-gradient(circle 5px at 42% 28%, rgba(45, 52, 54, 0.6) 55%, transparent 60%),
    radial-gradient(circle 6px at 60% 38%, rgba(45, 52, 54, 0.6) 55%, transparent 60%),
    radial-gradient(circle 5px at 35% 55%, rgba(45, 52, 54, 0.6) 55%, transparent 60%),
    radial-gradient(circle 5px at 50% 48%, rgba(45, 52, 54, 0.6) 55%, transparent 60%),
    radial-gradient(circle 6px at 65% 58%, rgba(45, 52, 54, 0.6) 55%, transparent 60%),
    radial-gradient(circle 5px at 45% 68%, rgba(45, 52, 54, 0.6) 55%, transparent 60%);
  pointer-events: none;
  z-index: 2;
}

.hero-image::after {
  content: '🍉';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 6rem;
  z-index: 1;
  opacity: 0.6;
  filter: drop-shadow(0 8px 24px rgba(255, 78, 94, 0.3));
}

.hero-image img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 3;
  opacity: 0.9;
  transition: opacity 0.4s;
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  letter-spacing: 0.01em;
}

.btn-primary {
  background: linear-gradient(135deg, var(--melon-red) 0%, var(--melon-red-dark) 100%);
  color: #fff;
  box-shadow: 0 10px 30px rgba(255, 78, 94, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(255, 78, 94, 0.4);
}

.btn-primary::before {
  content: '🍉';
  font-size: 1.1em;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--melon-green);
  color: var(--melon-green-dark);
}

.btn-outline:hover {
  background: var(--melon-green);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: var(--shadow-green);
}

/* ========== 标签 / 标题 ========== */
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 16px;
  background: var(--melon-pink);
  color: var(--melon-red-dark);
  padding: 6px 18px;
  border-radius: 50px;
  border: 1px solid rgba(255, 78, 94, 0.15);
}

.section-label::before {
  content: '🍉 ';
  font-size: 0.85em;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 14px;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--melon-seed);
}

.section-desc {
  max-width: 620px;
  color: var(--melon-gray);
  opacity: 0.9;
  margin-bottom: 48px;
  font-size: 1rem;
  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 {
  border-radius: 24px;
  padding: 32px 28px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(255, 78, 94, 0.08);
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.35s, border-color 0.35s;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--melon-red) 0%, var(--melon-red) 30%, var(--melon-yellow) 30%, var(--melon-yellow) 50%, var(--melon-green) 50%);
  opacity: 0;
  transition: opacity 0.3s;
}

.category-card::after {
  content: '';
  position: absolute;
  bottom: -40px;
  right: -40px;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  border: 16px solid rgba(0, 184, 148, 0.08);
  transition: transform 0.5s;
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(0, 184, 148, 0.2);
}

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

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

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
  background: linear-gradient(135deg, var(--melon-pink), var(--melon-mint));
  box-shadow: inset 0 2px 4px rgba(255, 255, 255, 0.6);
}

.category-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--melon-seed);
}

.category-card p {
  font-size: 0.9rem;
  color: var(--melon-gray);
  margin-bottom: 18px;
  line-height: 1.6;
}

.card-link {
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--melon-red);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.3s;
}

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

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

.feature-image {
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  border: 6px solid rgba(255, 255, 255, 0.8);
  position: relative;
}

.feature-image::after {
  content: '🍉';
  position: absolute;
  bottom: 16px;
  right: 16px;
  font-size: 2.4rem;
  opacity: 0.7;
  filter: drop-shadow(0 4px 12px rgba(255, 78, 94, 0.3));
}

.feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s;
}

.feature-image:hover img {
  transform: scale(1.04);
}

.feature-text {
  position: relative;
  z-index: 2;
}

.feature-text .section-label {
  margin-bottom: 12px;
}

.feature-text h3 {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
}

.feature-text p {
  color: var(--melon-gray);
  line-height: 1.7;
  margin-bottom: 24px;
}

.feature-list {
  list-style: none;
}

.feature-list li {
  padding: 10px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
}

.feature-list li::before {
  content: '✓';
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--melon-red), var(--melon-green));
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(255, 78, 94, 0.2);
}

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

.stat-item {
  padding: 32px 20px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(0, 184, 148, 0.12);
  box-shadow: var(--shadow-soft);
  position: relative;
  transition: transform 0.3s, box-shadow 0.3s;
}

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

.stat-item::before {
  content: '';
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 6px;
  border-radius: 10px;
  background: linear-gradient(90deg, var(--melon-red), var(--melon-green));
  opacity: 0.2;
}

.stat-number {
  font-size: 2.6rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--melon-red), var(--melon-green));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.3;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--melon-gray);
  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: 24px;
  overflow: hidden;
  background: #fff;
  border: 1px solid rgba(255, 78, 94, 0.08);
  transition: transform 0.3s, box-shadow 0.3s;
  position: relative;
}

.content-wall-item:hover {
  transform: translateY(-6px) rotate(0.5deg);
  box-shadow: var(--shadow-hover);
}

.content-wall-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--melon-red), var(--melon-yellow), var(--melon-green));
  transform: scaleX(0);
  transition: transform 0.4s;
}

.content-wall-item:hover::after {
  transform: scaleX(1);
}

.content-wall-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
  transition: transform 0.5s;
}

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

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

.content-wall-body h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.content-wall-body p {
  font-size: 0.88rem;
  color: var(--melon-gray);
  line-height: 1.6;
}

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

.faq-item {
  border: 1px solid rgba(0, 184, 148, 0.15);
  border-radius: 18px;
  margin-bottom: 12px;
  overflow: hidden;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.85);
  transition: border-color 0.3s, box-shadow 0.3s;
}

.faq-item:hover {
  border-color: var(--melon-green);
  box-shadow: var(--shadow-soft);
}

.faq-item .faq-question {
  padding: 20px 24px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1rem;
  color: var(--melon-seed);
  transition: color 0.3s;
}

.faq-item .faq-question::after {
  content: '＋';
  font-size: 1.3rem;
  color: var(--melon-red);
  transition: transform 0.35s;
  font-weight: 400;
}

.faq-item .faq-answer {
  padding: 0 24px 20px;
  color: var(--melon-gray);
  line-height: 1.7;
  font-size: 0.95rem;
  animation: fadeIn 0.3s ease;
}

.faq-item.open {
  border-color: var(--melon-red);
  box-shadow: 0 16px 40px rgba(255, 78, 94, 0.12);
}

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

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========== CTA ========== */
.cta-banner {
  padding: 64px 40px;
  text-align: center;
  border-radius: 36px;
  background: linear-gradient(135deg, var(--melon-red) 0%, var(--melon-red-dark) 60%, #ff7a45 130%);
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(255, 78, 94, 0.3);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 65%);
}

.cta-banner::after {
  content: '🍉';
  position: absolute;
  left: -20px;
  bottom: -20px;
  font-size: 8rem;
  opacity: 0.12;
  transform: rotate(-20deg);
}

.cta-banner h2 {
  color: #fff;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  margin-bottom: 16px;
  position: relative;
  z-index: 2;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.9);
  max-width: 520px;
  margin: 0 auto 32px;
  position: relative;
  z-index: 2;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--melon-red);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
  position: relative;
  z-index: 2;
}

.cta-banner .btn-primary::before {
  content: '🍉 ';
}

.cta-banner .btn-primary:hover {
  transform: translateY(-3px) scale(1.03);
}

/* ========== 页脚 ========== */
.site-footer {
  padding: 64px 0 28px;
  background:
    radial-gradient(ellipse 600px 300px at 10% 20%, rgba(255, 255, 255, 0.08) 0%, transparent 60%),
    var(--melon-green-dark);
  color: rgba(255, 255, 255, 0.9);
  border-radius: 36px 36px 0 0;
  margin-top: 40px;
}

.site-footer .container {
  max-width: 1200px;
}

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

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

.footer-brand .logo-icon {
  background: radial-gradient(circle at 50% 50%, var(--melon-red) 0%, var(--melon-red) 45%, var(--melon-cream) 48%, var(--melon-green) 55%);
}

.footer-brand p {
  font-size: 0.92rem;
  opacity: 0.8;
  line-height: 1.7;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: #fff;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 3px;
  border-radius: 10px;
  background: gradient(90deg, ...);
  background: var(--melon-green);
}

.footer-col a {
  display: block;
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  padding: 6px 0;
  font-size: 0.92rem;
  transition: color 0.25s, transform 0.25s;
}

.footer-col a:hover {
  color: #fff;
  transform: translateX(4px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
}

.footer-bottom::before {
  content: '🍉 ';
}

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

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

.seo-description {
  max-width: 620px;
  margin: 0 auto 48px;
  color: var(--melon-gray);
  line-height: 1.7;
  text-align: center;
}

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

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

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .hero {
    justify-content: center;
    text-align: center;
    padding-top: 100px;
  }

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

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

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

  .hero-image {
    width: 340px;
    height: 340px;
  }

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

@media (max-width: 768px) {
  .section {
    padding: 70px 0;
  }

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

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

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

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
    width: 46px;
    height: 46px;
    border-radius: 14px;
    border: none;
    background: linear-gradient(135deg, var(--melon-red), var(--melon-green));
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
    z-index: 1001;
    box-shadow: var(--shadow-soft);
  }

  .menu-toggle::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 2.5px;
    background: #fff;
    border-radius: 4px;
    box-shadow: 0 7px 0 #fff, 0 -7px 0 #fff;
  }

  .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 32px;
    gap: 20px;
    border-bottom: 2px solid rgba(0, 184, 148, 0.2);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.06);
    z-index: 999;
  }

  .main-nav.open a {
    font-size: 1.05rem;
  }

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

  .hero-image {
    width: 280px;
    height: 280px;
    border-width: 8px;
  }

  .hero-image::after {
    font-size: 4.5rem;
  }

  .cta-banner {
    padding: 48px 24px;
    border-radius: 28px;
  }
}

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

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

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

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

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

  .hero-image {
    width: 220px;
    height: 220px;
  }

  .hero {
    gap: 40px;
  }

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

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

  .cta-banner h2 {
    font-size: 1.6rem;
  }
}