/* 28圈 — 圈住你的世界
   Awwwards风格：柔光渐变 + 圆形切割 + 杂志网格
   色彩：薄荷绿 + 暖杏色 + 深海蓝（点缀）
   无黑色背景，纯白底 + 浅米色分区
*/

*, *::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: #fefcf7;
  color: #2d3e40;
  line-height: 1.6;
}

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

.section { padding:80px 0; position:relative; }
.section:nth-child(even) { background:#f8f5ee; }

/* 导航 — 固定顶部，磨砂玻璃+圆润 */
.site-header {
  position:fixed; top:0; left:0; width:100%; z-index:1000;
  background:rgba(254,252,247,0.88);
  backdrop-filter:blur(16px) saturate(1.2);
  border-bottom:1px solid rgba(157, 195, 185, 0.25);
}

.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:700; font-size:1.3rem; text-decoration:none; color:#2d3e40;
  letter-spacing:-0.3px;
}

.logo-icon {
  width:40px; height:40px; border-radius:50%;
  background: linear-gradient(135deg, #9dc3b9, #d4b895);
  display:flex; align-items:center; justify-content:center;
  font-size:1.1rem; color:#fff;
  box-shadow: 0 4px 12px rgba(157,195,185,0.3);
}

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

.main-nav a {
  text-decoration:none; font-size:0.9rem; font-weight:500;
  color:#4a5e60; transition:0.25s ease;
  position:relative;
  padding:4px 0;
}

.main-nav a::after {
  content:''; position:absolute; bottom:-2px; left:0;
  width:0; height:2px; background:#9dc3b9;
  transition:width 0.3s ease;
}

.main-nav a:hover { color:#2d3e40; }
.main-nav a:hover::after { width:100%; }

.nav-cta {
  padding:10px 24px; border-radius:40px;
  background: linear-gradient(135deg, #9dc3b9, #b8d4c9);
  color:#fff!important; font-weight:600;
  box-shadow: 0 4px 14px rgba(157,195,185,0.35);
  transition:0.3s;
}

.nav-cta:hover { transform:translateY(-2px); box-shadow:0 6px 20px rgba(157,195,185,0.45); }
.nav-cta::after { display:none!important; }

.menu-toggle { display:none; cursor:pointer; padding:8px; font-size:1.4rem; color:#4a5e60; }

/* 首页Hero — 圆形切割 + 柔光渐变 */
.hero {
  min-height:80vh; display:flex; align-items:center;
  background: radial-gradient(ellipse at 80% 20%, #f0f7f4 0%, #fefcf7 60%);
  padding-top:100px;
  position:relative;
  overflow:hidden;
}

.hero::before {
  content:'28'; position:absolute; right:-60px; top:-40px;
  font-size:32rem; font-weight:900; color:rgba(157,195,185,0.08);
  line-height:1; pointer-events:none;
  letter-spacing:-20px;
}

.hero-content { max-width:680px; position:relative; z-index:2; }

.hero-eyebrow {
  display:inline-block; font-size:0.8rem; font-weight:600;
  padding:6px 18px; border-radius:40px;
  background: rgba(157,195,185,0.18);
  color:#5a8a7e; margin-bottom:18px;
  letter-spacing:1.5px;
}

.hero h1 {
  font-size:3.2rem; line-height:1.15; margin-bottom:18px;
  color:#1f3335; font-weight:800;
  letter-spacing:-1px;
}

.hero h1 span {
  background: linear-gradient(135deg, #9dc3b9, #d4b895);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}

.hero p {
  font-size:1.15rem; opacity:0.7; max-width:540px; margin-bottom:36px;
  color:#4a5e60; line-height:1.7;
}

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

.hero-image {
  position:absolute; right:-40px; top:50%; transform:translateY(-50%);
  width:480px; height:480px; border-radius:50%;
  overflow:hidden;
  box-shadow: 0 20px 60px rgba(157,195,185,0.25);
  border:6px solid rgba(255,255,255,0.5);
}

.hero-image img {
  width:100%; height:100%; object-fit:cover;
  display:block;
}

/* 按钮 — 圆润温暖 */
.btn {
  display:inline-flex; align-items:center; gap:10px;
  padding:14px 32px; border-radius:40px;
  font-weight:600; cursor:pointer; border:none;
  text-decoration:none; transition:0.3s ease;
  font-size:0.95rem;
}

.btn-primary {
  background: linear-gradient(135deg, #9dc3b9, #b8d4c9);
  color:#fff; box-shadow:0 4px 16px rgba(157,195,185,0.35);
}

.btn-primary:hover { transform:translateY(-3px); box-shadow:0 8px 28px rgba(157,195,185,0.45); }

.btn-outline {
  background:transparent; border:2px solid #9dc3b9;
  color:#3d6b61;
}

.btn-outline:hover { background:rgba(157,195,185,0.1); border-color:#7dafa3; }

/* 标签/标题 */
.section-label {
  display:inline-block; font-size:0.75rem; font-weight:600;
  letter-spacing:3px; margin-bottom:14px;
  color:#9dc3b9; text-transform:uppercase;
}

.section-title {
  font-size:2.2rem; margin-bottom:12px; color:#1f3335;
  font-weight:700; letter-spacing:-0.5px;
}

.section-desc {
  max-width:600px; opacity:0.7; margin-bottom:44px;
  color:#4a5e60; font-size:1.05rem; line-height:1.7;
}

/* 卡片网格 — 圆角+浅影+图标圆形 */
.cards-grid {
  display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:28px;
}

.category-card {
  border-radius:20px; padding:32px 28px;
  background:#fff; border:1px solid rgba(157,195,185,0.15);
  transition:0.35s ease;
  position:relative; overflow:hidden;
}

.category-card::before {
  content:''; position:absolute; top:0; left:0;
  width:100%; height:4px;
  background: linear-gradient(90deg, #9dc3b9, #d4b895);
  opacity:0; transition:0.3s;
}

.category-card:hover { transform:translateY(-6px); box-shadow:0 12px 40px rgba(157,195,185,0.18); }
.category-card:hover::before { opacity:1; }

.card-icon {
  width:52px; height:52px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  margin-bottom:18px; font-size:1.4rem;
  background: rgba(157,195,185,0.15);
  color:#5a8a7e;
}

.card-link {
  font-weight:600; font-size:0.85rem; text-decoration:none;
  color:#9dc3b9; display:inline-flex; align-items:center; gap:6px;
}

.card-link::after { content:'→'; transition:0.2s; }
.card-link:hover::after { transform:translateX(4px); }

/* 特性块 — 左右布局 + 圆润图片 */
.feature-block {
  display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center;
}

.feature-image {
  border-radius:24px; overflow:hidden;
  box-shadow: 0 16px 48px rgba(157,195,185,0.15);
}

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

.feature-text { }

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

.feature-list li {
  padding:8px 0; display:flex; align-items:center; gap:10px;
  font-size:1rem; color:#3d5a52;
}

.feature-list li::before {
  content:'✓'; font-weight:700; color:#9dc3b9;
  font-size:1.1rem;
}

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

.stat-item {
  padding:32px 16px; border-radius:20px;
  background:#fff; border:1px solid rgba(157,195,185,0.12);
  transition:0.3s;
}

.stat-item:hover { transform:translateY(-4px); box-shadow:0 8px 28px rgba(157,195,185,0.12); }

.stat-number {
  font-size:2.6rem; font-weight:800; color:#1f3335;
  background: linear-gradient(135deg, #9dc3b9, #d4b895);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}

.stat-label { font-size:0.9rem; opacity:0.6; margin-top:8px; color:#4a5e60; }

/* 内容墙 — 杂志风格 */
.content-wall {
  display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:28px;
}

.content-wall-item {
  border-radius:20px; overflow:hidden;
  background:#fff; border:1px solid rgba(157,195,185,0.12);
  transition:0.35s ease;
}

.content-wall-item:hover { transform:translateY(-6px); box-shadow:0 12px 40px rgba(157,195,185,0.15); }

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

.content-wall-body { padding:24px 22px; }
.content-wall-body h3 { font-size:1.2rem; margin-bottom:6px; color:#1f3335; }
.content-wall-body p { font-size:0.9rem; opacity:0.7; color:#4a5e60; }

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

.faq-item {
  border:1px solid rgba(157,195,185,0.2);
  border-radius:16px; margin-bottom:10px;
  overflow:hidden; cursor:pointer;
  background:#fff; transition:0.2s;
}

.faq-item:hover { border-color:#9dc3b9; }

.faq-item .faq-question {
  padding:18px 24px; font-weight:600; font-size:1.05rem;
  display:flex; justify-content:space-between; align-items:center;
  color:#1f3335;
}

.faq-item .faq-question::after {
  content:'+'; font-size:1.4rem; color:#9dc3b9;
  transition:0.3s;
}

.faq-item.open .faq-question::after { content:'−'; }

.faq-item .faq-answer {
  padding:0 24px 20px; display:none;
  opacity:0.75; color:#4a5e60; line-height:1.7;
}

.faq-item.open .faq-answer { display:block; }

/* CTA横幅 — 渐变背景 */
.cta-banner {
  padding:64px 32px; text-align:center; border-radius:24px;
  background: linear-gradient(135deg, #9dc3b9 0%, #b8d4c9 40%, #d4b895 100%);
  color:#fff; position:relative; overflow:hidden;
}

.cta-banner::before {
  content:'28'; position:absolute; right:20px; bottom:-30px;
  font-size:12rem; font-weight:900; opacity:0.06; color:#fff;
  line-height:1; pointer-events:none;
}

.cta-banner h2 { color:#fff; font-size:2rem; margin-bottom:12px; }
.cta-banner p { color:rgba(255,255,255,0.85); margin-bottom:28px; max-width:500px; margin-left:auto; margin-right:auto; }

.cta-banner .btn-primary {
  background:#fff; color:#3d6b61;
  box-shadow:0 4px 16px rgba(0,0,0,0.08);
}

.cta-banner .btn-primary:hover { background:#f8f5ee; transform:translateY(-3px); }

/* 页脚 — 浅色温暖 */
.site-footer {
  padding:60px 0 32px;
  background:#f5f2eb;
  border-top:1px solid rgba(157,195,185,0.15);
}

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

.footer-brand { }
.footer-brand .logo { margin-bottom:12px; }
.footer-brand p { font-size:0.9rem; opacity:0.65; max-width:300px; color:#4a5e60; }

.footer-col h4 { font-size:0.9rem; font-weight:600; margin-bottom:16px; color:#2d3e40; }
.footer-col ul { list-style:none; }
.footer-col ul li { margin-bottom:8px; }
.footer-col ul a { text-decoration:none; font-size:0.85rem; color:#5a7a72; transition:0.2s; }
.footer-col ul a:hover { color:#9dc3b9; }

.footer-bottom {
  border-top:1px solid rgba(157,195,185,0.2);
  margin-top:44px; padding-top:22px; text-align:center;
  font-size:0.85rem; color:#6a8a82;
}

/* 工具类 */
.text-accent { color:#9dc3b9; }
.text-center { text-align:center; }

.seo-description {
  max-width:600px; margin:0 auto 48px;
  opacity:0.7; color:#4a5e60; line-height:1.7;
}

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

/* ⚠️ 响应式 */
@media (max-width: 1024px) {
  .hero-image { width:360px; height:360px; right:-20px; }
  .hero h1 { font-size:2.6rem; }
}

@media (max-width: 768px) {
  .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; }
  .main-nav.open {
    display:flex; flex-direction:column; position:absolute;
    top:72px; left:0; width:100%; background:#fefcf7;
    padding:24px 32px; gap:16px;
    border-bottom:1px solid rgba(157,195,185,0.15);
    box-shadow:0 12px 32px rgba(0,0,0,0.04);
  }
  .main-nav.open a { font-size:1.1rem; }
  .hero-image { position:relative; right:auto; top:auto; transform:none; width:100%; max-width:400px; height:auto; aspect-ratio:1/1; margin:40px auto 0; border-radius:50%; }
  .hero { flex-direction:column; text-align:center; }
  .hero-content { max-width:100%; }
  .hero p { margin-left:auto; margin-right:auto; }
  .hero-buttons { justify-content:center; }
  .hero h1 { font-size:2.2rem; }
}

@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 h1 { font-size:1.9rem; }
  .section-title { font-size:1.7rem; }
  .stat-number { font-size:2rem; }
}