:root {
  --primary: #059669;
  --accent: #14b8a6;
  --bg: #f0fdfa;
  --text: #134e4a;
  --radius: 8px;
  --shadow-sm: 0 2px 8px rgba(5, 150, 105, 0.08);
  --shadow-md: 0 4px 20px rgba(5, 150, 105, 0.12);
}

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

body {
  font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, .navbar-brand {
  font-family: 'Kalam', 'Comic Neue', 'Segoe Script', 'PingFang SC', cursive;
}

/* ===== 导航 ===== */
.navbar {
  background: rgba(240, 253, 250, 0.92) !important;
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(5, 150, 105, 0.1);
  padding: 14px 0;
  transition: all 0.3s ease;
  z-index: 1000;
}

.navbar-brand {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--primary) !important;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.navbar-brand i { font-size: 1.8rem; color: var(--accent); }

.navbar-nav .nav-link {
  color: var(--text) !important;
  font-weight: 500;
  margin: 0 10px;
  position: relative;
  transition: color 0.2s;
}

.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s;
}

.navbar-nav .nav-link:hover::after { width: 100%; }

.navbar-toggler {
  border: 1px solid var(--primary);
  color: var(--primary);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  background: linear-gradient(135deg, #e0f2f1 0%, #f0fdfa 50%, #ccfbf1 100%);
  padding: 120px 0 140px;
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image: radial-gradient(circle at 20% 30%, rgba(20, 184, 166, 0.15) 0%, transparent 60%),
                    radial-gradient(circle at 80% 70%, rgba(5, 150, 105, 0.12) 0%, transparent 60%);
  animation: heroShift 16s ease-in-out infinite alternate;
}

@keyframes heroShift {
  0% { transform: translateY(0) scale(1); }
  100% { transform: translateY(-40px) scale(1.05); }
}

.hero .container { position: relative; z-index: 2; }

.hero-badge {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  padding: 6px 20px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 24px;
  box-shadow: 0 4px 12px rgba(5, 150, 105, 0.3);
}

.hero h1 {
  font-size: 3.8rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--text);
  letter-spacing: 2px;
}

.hero h1 .highlight {
  color: var(--primary);
  position: relative;
  display: inline-block;
}

.hero h1 .highlight::after {
  content: '';
  position: absolute;
  bottom: 6px; left: 0;
  width: 100%; height: 10px;
  background: rgba(20, 184, 166, 0.25);
  border-radius: 4px;
  z-index: -1;
}

.hero p.lead {
  font-size: 1.25rem;
  max-width: 680px;
  margin: 0 auto 36px;
  color: rgba(19, 78, 74, 0.85);
  font-weight: 400;
}

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

.btn-primary-custom {
  background: var(--primary);
  border: none;
  color: #fff;
  padding: 14px 36px;
  border-radius: 50px;
  font-size: 1.05rem;
  font-weight: 600;
  transition: all 0.3s;
  box-shadow: 0 4px 16px rgba(5, 150, 105, 0.35);
}

.btn-primary-custom:hover {
  background: #047857;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(5, 150, 105, 0.45);
}

.btn-outline-custom {
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
  padding: 12px 34px;
  border-radius: 50px;
  font-size: 1.05rem;
  font-weight: 600;
  transition: all 0.3s;
}

.btn-outline-custom:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

.hero-wave {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  overflow: hidden;
  line-height: 0;
  transform: rotate(180deg);
}

.hero-wave svg {
  display: block;
  width: 100%;
  height: 80px;
}

/* ===== 特色卡片 ===== */
.section {
  padding: 90px 0;
}

.section-title {
  font-size: 2.4rem;
  font-weight: 700;
  margin-bottom: 16px;
  text-align: center;
  position: relative;
}

.section-subtitle {
  text-align: center;
  font-size: 1.1rem;
  color: rgba(19, 78, 74, 0.7);
  max-width: 600px;
  margin: 0 auto 50px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.feature-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 32px 24px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  border: 1px solid rgba(5, 150, 105, 0.06);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(5, 150, 105, 0.15);
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s;
}

.feature-card:hover::before { transform: scaleX(1); }

.feature-icon {
  width: 64px; height: 64px;
  background: linear-gradient(135deg, rgba(5, 150, 105, 0.12), rgba(20, 184, 166, 0.12));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-icon i {
  font-size: 1.6rem;
  color: var(--primary);
}

.feature-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-card p {
  color: rgba(19, 78, 74, 0.75);
  font-size: 0.95rem;
}

/* ===== 长文介绍(波浪分隔) ===== */
.about-section {
  position: relative;
  background: #fff;
  padding: 100px 0 110px;
}

.about-section::before {
  content: '';
  position: absolute;
  top: -50px;
  left: 0;
  width: 100%;
  height: 100px;
  background: var(--bg);
  clip-path: polygon(0 50%, 100% 0, 100% 100%, 0 100%);
}

.about-section::after {
  content: '';
  position: absolute;
  bottom: -50px;
  left: 0;
  width: 100%;
  height: 100px;
  background: var(--bg);
  clip-path: polygon(0 0, 100% 50%, 100% 100%, 0 100%);
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
}

.accordion-item {
  border: 1px solid rgba(5, 150, 105, 0.1);
  border-radius: var(--radius);
  margin-bottom: 16px;
  background: #f8fdfc;
  overflow: hidden;
}

.accordion-button {
  background: transparent;
  color: var(--text);
  font-weight: 600;
  font-size: 1.05rem;
  padding: 18px 24px;
  border: none;
  transition: all 0.3s;
}

.accordion-button:not(.collapsed) {
  background: rgba(5, 150, 105, 0.06);
  color: var(--primary);
}

.accordion-button:focus {
  box-shadow: none;
  border-color: rgba(5, 150, 105, 0.3);
}

.accordion-body {
  padding: 20px 24px;
  color: rgba(19, 78, 74, 0.85);
  border-top: 1px solid rgba(5, 150, 105, 0.08);
  background: #fff;
}

.accordion-button::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23059669'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}

/* ===== FAQ ===== */
.faq-section {
  background: linear-gradient(180deg, #fff, #f0fdfa);
  padding: 90px 0 100px;
}

.faq-item {
  max-width: 800px;
  margin: 0 auto 12px;
  background: #fff;
  border-radius: var(--radius);
  padding: 24px 28px;
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--accent);
}

.faq-question {
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--primary);
}

.faq-answer {
  color: rgba(19, 78, 74, 0.8);
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  background: linear-gradient(135deg, #059669, #0d9488);
  padding: 80px 0;
  text-align: center;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -30px; left: -30px;
  width: 200px; height: 200px;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -50px; right: -50px;
  width: 250px; height: 250px;
  background: rgba(255,255,255,0.05);
  border-radius: 50%;
}

.cta-section h2 {
  color: #fff;
  font-size: 2.6rem;
  font-weight: 800;
  margin-bottom: 16px;
  position: relative;
  z-index: 2;
}

.cta-section p {
  color: rgba(255,255,255,0.9);
  font-size: 1.15rem;
  margin-bottom: 32px;
  position: relative;
  z-index: 2;
}

.cta-btn {
  background: #fff;
  color: var(--primary);
  padding: 16px 48px;
  border-radius: 50px;
  font-size: 1.1rem;
  font-weight: 700;
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s;
  position: relative;
  z-index: 2;
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.cta-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.2);
  color: #047857;
}

/* ===== 友情链接 ===== */
.friend-links {
  background: #fff;
  padding: 40px 0;
  border-top: 1px solid rgba(5, 150, 105, 0.08);
}

.friend-links h3 {
  text-align: center;
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text);
}

.friend-links .links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  color: rgba(19, 78, 74, 0.6);
  font-size: 0.9rem;
}

/* ===== 页脚 ===== */
.footer {
  background: #134e4a;
  color: rgba(255,255,255,0.8);
  padding: 30px 0;
  font-size: 0.95rem;
}

.footer a {
  color: #99f6e4;
  text-decoration: none;
  transition: color 0.2s;
}

.footer a:hover { color: #fff; }

/* ===== 回到顶部 ===== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px; height: 50px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  font-size: 1.2rem;
  box-shadow: 0 4px 16px rgba(5, 150, 105, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.4s ease;
  z-index: 999;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: #047857;
  transform: translateY(-4px);
}

/* ===== 图片 hover 效果(备用) ===== */
.img-hover {
  overflow: hidden;
  border-radius: var(--radius);
}

.img-hover img {
  transition: transform 0.5s ease;
  width: 100%;
}

.img-hover:hover img { transform: scale(1.08); }

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .hero h1 { font-size: 2.4rem; }
  .hero { padding: 80px 0 100px; }
  .section-title { font-size: 1.9rem; }
  .card-grid { grid-template-columns: 1fr; }
  .back-to-top { bottom: 20px; right: 20px; width: 44px; height: 44px; }
}

/* --- 子页面追加 --- */
/* 本页专属样式 - 关于页 */
        .about-hero {
            background: linear-gradient(135deg, rgba(5,150,105,0.08) 0%, rgba(20,184,166,0.12) 100%);
            border-bottom: 1px solid rgba(5,150,105,0.1);
        }
.about-stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
.stat-item {
            text-align: center;
            padding: 1.5rem 1rem;
            background: var(--bg);
            border: 1px solid rgba(5,150,105,0.15);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
        }
.stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
.stat-label {
            color: var(--text);
            font-size: 0.9rem;
            margin-top: 0.5rem;
            opacity: 0.8;
        }
.timeline-list {
            list-style: none;
            padding-left: 0;
            position: relative;
        }
.timeline-list::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: rgba(5,150,105,0.2);
        }
.timeline-list li {
            position: relative;
            padding-left: 32px;
            margin-bottom: 1.2rem;
        }
.timeline-list li::before {
            content: '';
            position: absolute;
            left: 4px;
            top: 8px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--primary);
        }
.team-card {
            background: var(--bg);
            border: 1px solid rgba(5,150,105,0.12);
            border-radius: var(--radius);
            padding: 1.8rem 1.5rem;
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: all 0.3s ease;
        }
.team-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
.team-avatar {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }
.feature-list {
            list-style: none;
            padding-left: 0;
        }
.feature-list li {
            padding: 0.6rem 0;
            display: flex;
            align-items: flex-start;
            gap: 0.75rem;
        }
.feature-list li i {
            color: var(--primary);
            margin-top: 4px;
        }
.value-card {
            background: var(--bg);
            border: 1px solid rgba(5,150,105,0.12);
            border-radius: var(--radius);
            padding: 1.8rem;
            height: 100%;
            box-shadow: var(--shadow-sm);
        }
.value-card h4 {
            color: var(--primary);
            margin-bottom: 0.75rem;
            font-weight: 700;
        }

/* --- 子页面追加 --- */
/* 隐私政策页面专属样式 */
        .privacy-hero {
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            color: #fff;
            padding: 60px 0 40px;
            position: relative;
            overflow: hidden;
        }
.privacy-hero h1 {
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: 15px;
        }
.privacy-hero p {
            font-size: 1.1rem;
            opacity: 0.9;
            max-width: 700px;
        }
.privacy-section {
            padding: 50px 0;
            border-bottom: 1px solid rgba(5, 150, 105, 0.1);
        }
.privacy-section:last-child {
            border-bottom: none;
        }
.privacy-section h2 {
            color: var(--primary);
            font-weight: 700;
            font-size: 1.6rem;
            margin-bottom: 20px;
            padding-left: 15px;
            border-left: 4px solid var(--accent);
        }
.privacy-section h3 {
            color: var(--text);
            font-weight: 600;
            font-size: 1.2rem;
            margin-top: 20px;
            margin-bottom: 12px;
        }
.privacy-section p {
            line-height: 1.8;
            color: #2d5a55;
            margin-bottom: 15px;
        }
.privacy-section ul {
            padding-left: 20px;
            margin-bottom: 15px;
        }
.privacy-section ul li {
            margin-bottom: 8px;
            color: #2d5a55;
            line-height: 1.7;
        }
.privacy-section ul li strong {
            color: var(--primary);
        }
.privacy-note {
            background: rgba(5, 150, 105, 0.08);
            border-radius: var(--radius);
            padding: 20px;
            margin: 20px 0;
            border-left: 4px solid var(--primary);
        }
.privacy-note i {
            color: var(--primary);
            margin-right: 8px;
        }
.privacy-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(20, 184, 166, 0.1);
            color: var(--primary);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 20px;
        }
.privacy-badge i {
            font-size: 1rem;
        }
.last-updated {
            color: #5a8a85;
            font-size: 0.9rem;
            margin-bottom: 30px;
        }
.privacy-hero h1 {
                font-size: 1.8rem;
            }
.privacy-hero p {
                font-size: 1rem;
            }
.privacy-section h2 {
                font-size: 1.3rem;
            }

/* --- 子页面追加 --- */
/* 免责声明专属样式 - 与站点整体风格保持一致 */
        .disclaimer-hero {
            background: linear-gradient(135deg, rgba(5, 150, 105, 0.08) 0%, rgba(20, 184, 166, 0.12) 100%);
            padding: 60px 0 40px;
            position: relative;
            overflow: hidden;
        }
.disclaimer-hero .container {
            position: relative;
            z-index: 2;
        }
.disclaimer-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(20, 184, 166, 0.06) 0%, transparent 70%);
            border-radius: 50%;
        }
.disclaimer-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(5, 150, 105, 0.05) 0%, transparent 70%);
            border-radius: 50%;
        }
.disclaimer-title {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
.disclaimer-subtitle {
            color: var(--primary);
            font-size: 1.1rem;
            font-weight: 500;
            opacity: 0.85;
        }
.disclaimer-section {
            padding: 40px 0;
        }
.disclaimer-card {
            background: rgba(255, 255, 255, 0.6);
            border: 1px solid rgba(5, 150, 105, 0.1);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            padding: 32px 36px;
            margin-bottom: 24px;
            transition: box-shadow 0.3s ease;
        }
.disclaimer-card:hover {
            box-shadow: var(--shadow-md);
        }
.disclaimer-card h2 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
.disclaimer-card h2 i {
            color: var(--accent);
            font-size: 1.3rem;
        }
.disclaimer-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text);
            margin-top: 16px;
            margin-bottom: 10px;
        }
.disclaimer-card p {
            color: var(--text);
            line-height: 1.8;
            font-size: 0.95rem;
            margin-bottom: 12px;
            opacity: 0.9;
        }
.disclaimer-card ul {
            padding-left: 20px;
            color: var(--text);
            line-height: 1.8;
            font-size: 0.95rem;
            opacity: 0.9;
            margin-bottom: 12px;
        }
.disclaimer-card li {
            margin-bottom: 8px;
        }
.highlight-box {
            background: rgba(5, 150, 105, 0.06);
            border-left: 4px solid var(--primary);
            padding: 16px 20px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 20px 0;
        }
.highlight-box p {
            margin-bottom: 0;
            opacity: 0.95;
        }
.update-info {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(20, 184, 166, 0.1);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
        }
.update-info i {
            font-size: 0.9rem;
        }
.disclaimer-title {
                font-size: 1.8rem;
            }
.disclaimer-card {
                padding: 24px 20px;
            }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.accordion-header { background:transparent !important; }