:root {
  --main-color: #64748b;
  --accent-color: #94a3b8;
  --bg-color: #f1f5f9;
  --text-color: #1e293b;
  --light-line: #e2e8f0;
  --white: #ffffff;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --radius: 8px;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.75;
  font-size: 16px;
}

/* ===== 滚动进度条 ===== */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--main-color);
  z-index: 9999;
  transition: width 0.08s linear;
}

/* ===== 回到顶部按钮 ===== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 46px;
  height: 46px;
  background: var(--main-color);
  color: #fff;
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.35s ease;
  box-shadow: 0 4px 14px rgba(100,116,139,0.35);
  z-index: 999;
  font-size: 18px;
}
.back-to-top.show {
  opacity: 1;
  visibility: visible;
}
.back-to-top:hover {
  background: var(--accent-color);
  transform: translateY(-3px);
}

/* ===== 导航栏 ===== */
.navbar {
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--light-line);
  padding: 14px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}
.navbar-brand {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-color) !important;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
}
.navbar-brand i {
  color: var(--main-color);
  margin-right: 8px;
  font-size: 1.5rem;
}
.navbar-toggler {
  border: 1px solid var(--light-line);
  padding: 6px 10px;
}
.navbar-toggler:focus {
  box-shadow: none;
}
.nav-link {
  font-weight: 500;
  color: var(--text-color) !important;
  margin: 0 10px;
  position: relative;
  padding: 6px 0;
  font-size: 0.95rem;
  transition: color 0.2s;
}
.nav-link:hover {
  color: var(--main-color) !important;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--main-color);
  transition: width 0.3s;
}
.nav-link:hover::after {
  width: 100%;
}
@media (max-width: 991px) {
  .nav-link {
    margin: 5px 0;
    padding: 8px 0;
  }
}

/* ===== Hero 区域 ===== */
.hero {
  min-height: 88vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  padding: 60px 20px;
  overflow: hidden;
}

/* 几何色块背景 */
.geo-shapes {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}
.geo-shapes .shape {
  position: absolute;
  opacity: 0.12;
}
.geo-shapes .circle {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: var(--main-color);
  top: 12%;
  left: 8%;
}
.geo-shapes .square {
  width: 90px;
  height: 90px;
  background: var(--accent-color);
  bottom: 18%;
  left: 20%;
  border-radius: 4px;
}
.geo-shapes .triangle {
  width: 0;
  height: 0;
  border-left: 65px solid transparent;
  border-right: 65px solid transparent;
  border-bottom: 110px solid var(--main-color);
  top: 20%;
  right: 12%;
}
.geo-shapes .small-circle {
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: var(--accent-color);
  bottom: 25%;
  right: 22%;
}
.geo-shapes .ring {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  border: 3px solid var(--main-color);
  top: 55%;
  left: 15%;
  background: transparent;
}
.geo-shapes .dots {
  width: 8px;
  height: 8px;
  background: var(--main-color);
  box-shadow: 20px 0 0 var(--main-color), 40px 0 0 var(--main-color), 60px 0 0 var(--main-color), 20px 18px 0 var(--main-color), 40px 18px 0 var(--main-color), 60px 18px 0 var(--main-color);
  top: 10%;
  right: 30%;
  opacity: 0.15;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 820px;
  margin: 0 auto;
}
.hero h1 {
  font-size: 3.8rem;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 1.2rem;
  color: var(--text-color);
  line-height: 1.2;
}
.hero h1 .brand-in-title {
  color: var(--main-color);
}
.hero .subtitle {
  font-size: 1.25rem;
  color: #64748b;
  margin-bottom: 2rem;
  font-weight: 400;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.hero .cta-group {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn-main {
  background: var(--main-color);
  color: #fff;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  border: none;
  transition: all 0.3s;
  text-decoration: none;
  display: inline-block;
}
.btn-main:hover {
  background: #4a5568;
  transform: translateY(-2px);
  color: #fff;
}
.btn-outline-main {
  background: transparent;
  color: var(--main-color);
  padding: 12px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  border: 2px solid var(--main-color);
  transition: all 0.3s;
  text-decoration: none;
  display: inline-block;
}
.btn-outline-main:hover {
  background: rgba(100,116,139,0.1);
  color: var(--main-color);
  transform: translateY(-2px);
}

/* 打字机动画光标 */
.typewriter-cursor {
  display: inline-block;
  width: 3px;
  background: var(--main-color);
  margin-left: 2px;
  animation: blink 0.8s step-end infinite;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* ===== 通用区块 ===== */
.section {
  padding: 90px 0;
  position: relative;
}
.section-light {
  background: var(--white);
  border-top: 1px solid var(--light-line);
  border-bottom: 1px solid var(--light-line);
}
.section-label {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--main-color);
  margin-bottom: 12px;
}
.section-title {
  font-size: 2.4rem;
  font-weight: 800;
  margin-bottom: 18px;
  line-height: 1.3;
  color: var(--text-color);
}
.section-desc {
  font-size: 1.05rem;
  color: #64748b;
  max-width: 640px;
  margin: 0 auto 50px;
  text-align: center;
}

/* ===== 特色卡片 ===== */
.feature-card {
  background: var(--white);
  border: 1px solid var(--light-line);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: all 0.3s ease;
  height: 100%;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}
.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-6px);
}
.feature-card .icon-box {
  width: 58px;
  height: 58px;
  border-radius: 12px;
  background: rgba(100,116,139,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  font-size: 1.6rem;
  color: var(--main-color);
}
.feature-card h5 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-color);
}
.feature-card p {
  font-size: 0.95rem;
  color: #64748b;
  margin-bottom: 0;
  line-height: 1.7;
}

/* ===== FAQ 折叠 ===== */
.faq-wrap {
  max-width: 760px;
  margin: 0 auto;
}
.faq-item {
  background: var(--white);
  border: 1px solid var(--light-line);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.faq-question {
  padding: 20px 26px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text-color);
  user-select: none;
  transition: background 0.2s;
}
.faq-question:hover {
  background: #f8fafc;
}
.faq-question .faq-icon {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(100,116,139,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--main-color);
  flex-shrink: 0;
  transition: transform 0.3s;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
}
.faq-answer {
  padding: 0 26px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.3s ease;
  color: #64748b;
  font-size: 0.95rem;
  line-height: 1.75;
}
.faq-item.active .faq-answer {
  padding: 0 26px 22px;
  max-height: 400px;
}

/* ===== 介绍区块(步骤条) ===== */
.steps-wrap {
  max-width: 760px;
  margin: 0 auto;
}
.step-item {
  display: flex;
  gap: 22px;
  margin-bottom: 42px;
  position: relative;
}
.step-item:last-child {
  margin-bottom: 0;
}
.step-item::before {
  content: '';
  position: absolute;
  left: 29px;
  top: 60px;
  bottom: -40px;
  width: 2px;
  background: var(--light-line);
}
.step-item:last-child::before {
  display: none;
}
.step-num {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--main-color);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(100,116,139,0.3);
  z-index: 1;
}
.step-content {
  padding-top: 4px;
}
.step-content h4 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-color);
}
.step-content p {
  color: #64748b;
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* ===== CTA 区块 ===== */
.cta-section {
  background: var(--main-color);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  top: -100px;
  right: -80px;
}
.cta-section::after {
  content: '';
  position: absolute;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  bottom: -60px;
  left: -40px;
}
.cta-content {
  position: relative;
  z-index: 2;
}
.cta-content h2 {
  color: #fff;
  font-size: 2.6rem;
  font-weight: 800;
  margin-bottom: 16px;
}
.cta-content p {
  color: rgba(255,255,255,0.85);
  font-size: 1.1rem;
  max-width: 560px;
  margin: 0 auto 32px;
}
.btn-white {
  background: #fff;
  color: var(--main-color);
  padding: 14px 36px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 1rem;
  border: none;
  transition: all 0.3s;
  text-decoration: none;
  display: inline-block;
}
.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
  color: var(--main-color);
}

/* ===== 友情链接 ===== */
.friend-links {
  background: var(--white);
  padding: 48px 0;
  border-top: 1px solid var(--light-line);
}
.friend-links h5 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-color);
  margin-bottom: 18px;
  letter-spacing: 1px;
}
.friend-links .link-area {
  font-size: 0.9rem;
  color: #64748b;
  line-height: 2.2;
}

/* ===== 页脚 ===== */
.footer {
  background: var(--text-color);
  color: #cbd5e1;
  padding: 30px 0;
  font-size: 0.9rem;
}
.footer a {
  color: #94a3b8;
  text-decoration: none;
  margin: 0 6px;
}
.footer a:hover {
  color: #fff;
}
.footer .brand-footer {
  font-weight: 700;
  color: #fff;
  font-size: 1.1rem;
  display: inline-flex;
  align-items: center;
  margin-right: 6px;
}
.footer .brand-footer i {
  margin-right: 6px;
  color: var(--accent-color);
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.6rem;
  }
  .hero .subtitle {
    font-size: 1.05rem;
  }
  .section {
    padding: 60px 0;
  }
  .section-title {
    font-size: 1.9rem;
  }
  .cta-content h2 {
    font-size: 2rem;
  }
  .step-item::before {
    left: 25px;
  }
  .step-num {
    width: 52px;
    height: 52px;
    font-size: 1rem;
  }
}

/* --- 子页面追加 --- */
/* 页面专属样式 */
        .rank-hero {
            background: linear-gradient(135deg, var(--bg-color) 0%, #e8eef5 100%);
            padding: 60px 0 40px;
            border-bottom: 1px solid var(--light-line);
            position: relative;
            overflow: hidden;
        }
.rank-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(100, 116, 139, 0.08) 0%, transparent 70%);
            border-radius: 50%;
        }
.rank-hero-content {
            position: relative;
            z-index: 1;
        }
.rank-hero h1 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-color);
            margin-bottom: 12px;
        }
.rank-hero p {
            color: var(--main-color);
            font-size: 1.05rem;
            max-width: 600px;
            line-height: 1.7;
        }
.rank-tabs {
            margin-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
.rank-tab-btn {
            padding: 8px 20px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--main-color);
            background: transparent;
            border: 1.5px solid var(--main-color);
            cursor: pointer;
            transition: all 0.3s ease;
        }
.rank-tab-btn:hover {
            background: rgba(100, 116, 139, 0.1);
        }
.rank-tab-btn.active {
            background: var(--main-color);
            color: #fff;
            border-color: var(--main-color);
        }
.rank-section {
            padding: 50px 0;
        }
.rank-section-title {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-color);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
.rank-section-title i {
            color: var(--accent-color);
        }
.rank-section-desc {
            color: var(--main-color);
            font-size: 0.95rem;
            margin-bottom: 30px;
        }
.rank-card {
            background: var(--white);
            border: 1px solid var(--light-line);
            border-radius: var(--radius);
            padding: 20px;
            margin-bottom: 16px;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-sm);
        }
.rank-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
.rank-card-header {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 12px;
        }
.rank-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-color);
            color: var(--main-color);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
.rank-num.top {
            background: linear-gradient(135deg, #f59e0b, #f97316);
            color: #fff;
        }
.rank-num.top-2 {
            background: linear-gradient(135deg, #94a3b8, #64748b);
            color: #fff;
        }
.rank-num.top-3 {
            background: linear-gradient(135deg, #d97706, #b45309);
            color: #fff;
        }
.rank-card-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-color);
            margin: 0;
        }
.rank-card-meta {
            font-size: 0.85rem;
            color: var(--main-color);
            margin-top: 4px;
        }
.rank-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 10px;
        }
.rank-tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 500;
            background: var(--bg-color);
            color: var(--main-color);
            border: 1px solid var(--light-line);
        }
.rank-tag.hot {
            background: rgba(245, 158, 11, 0.1);
            color: #d97706;
            border-color: rgba(245, 158, 11, 0.2);
        }
.rank-card-desc {
            color: var(--text-color);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-top: 10px;
            opacity: 0.85;
        }
.rank-card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 14px;
            padding-top: 12px;
            border-top: 1px solid var(--light-line);
        }
.rank-card-stats {
            display: flex;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--main-color);
        }
.rank-card-stats i {
            margin-right: 4px;
        }
.rank-reason {
            font-size: 0.82rem;
            color: var(--accent-color);
            background: var(--bg-color);
            padding: 6px 14px;
            border-radius: 20px;
        }
.rank-note-box {
            background: linear-gradient(135deg, rgba(100, 116, 139, 0.05) 0%, rgba(148, 163, 184, 0.08) 100%);
            border: 1px solid var(--light-line);
            border-radius: var(--radius);
            padding: 24px;
            margin: 40px 0;
        }
.rank-note-box h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-color);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
.rank-note-box p {
            color: var(--main-color);
            font-size: 0.92rem;
            line-height: 1.8;
            margin-bottom: 10px;
        }
.rank-hero {
                padding: 40px 0 30px;
            }
.rank-hero h1 {
                font-size: 1.6rem;
            }
.rank-card-header {
                flex-direction: row;
                align-items: flex-start;
            }

/* --- 子页面追加 --- */
/* 页面专属样式 */
        .contact-hero {
            background: linear-gradient(135deg, var(--bg-color) 0%, #e2e8f0 100%);
            padding: 80px 0 60px;
            border-bottom: 1px solid var(--light-line);
        }
.contact-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 30px;
            box-shadow: var(--shadow-md);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 1px solid var(--light-line);
            height: 100%;
        }
.contact-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 24px rgba(0,0,0,0.1);
        }
.contact-icon {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: var(--bg-color);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--main-color);
            font-size: 24px;
        }
.contact-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-color);
            margin-bottom: 12px;
        }
.contact-card p {
            color: #64748b;
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 8px;
        }
.contact-card .contact-value {
            color: var(--text-color);
            font-weight: 600;
            font-size: 16px;
        }
.response-time {
            background: var(--bg-color);
            border-radius: var(--radius);
            padding: 15px 20px;
            border-left: 4px solid var(--main-color);
            margin-top: 30px;
        }
.response-time i {
            color: var(--main-color);
            margin-right: 10px;
        }
.response-time span {
            color: var(--text-color);
            font-weight: 600;
        }
.response-time .time-detail {
            display: block;
            color: #64748b;
            font-size: 14px;
            margin-top: 5px;
        }
.cooperation-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 25px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--light-line);
            margin-bottom: 20px;
            transition: box-shadow 0.3s ease;
        }
.cooperation-card:hover {
            box-shadow: var(--shadow-md);
        }
.cooperation-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-color);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
.cooperation-card h4 i {
            color: var(--main-color);
            font-size: 20px;
        }
.cooperation-card p {
            color: #64748b;
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 8px;
        }
.cooperation-card .email-link {
            color: var(--main-color);
            font-weight: 600;
            text-decoration: none;
            border-bottom: 1px dashed var(--main-color);
        }
.cooperation-card .email-link:hover {
            color: var(--accent-color);
            border-bottom-style: solid;
        }
.community-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--light-line);
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 15px;
            transition: transform 0.3s ease;
        }
.community-card:hover {
            transform: translateX(5px);
        }
.community-card i {
            font-size: 24px;
            color: var(--main-color);
            width: 40px;
            text-align: center;
        }
.community-card .community-info h5 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-color);
            margin-bottom: 4px;
        }
.community-card .community-info p {
            font-size: 13px;
            color: #64748b;
            margin-bottom: 0;
        }
.community-card .join-btn {
            margin-left: auto;
            font-size: 13px;
            color: var(--main-color);
            text-decoration: none;
            border: 1px solid var(--main-color);
            padding: 6px 14px;
            border-radius: 20px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }
.community-card .join-btn:hover {
            background: var(--main-color);
            color: var(--white);
        }
.notice-box {
            background: var(--bg-color);
            border-radius: var(--radius);
            padding: 20px;
            border: 1px solid var(--light-line);
            margin-top: 30px;
        }
.notice-box h5 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-color);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
.notice-box h5 i {
            color: var(--main-color);
        }
.notice-box ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
.notice-box ul li {
            font-size: 14px;
            color: #64748b;
            padding: 6px 0;
            line-height: 1.8;
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }
.notice-box ul li i {
            color: var(--main-color);
            font-size: 12px;
            margin-top: 5px;
        }

/* --- 子页面追加 --- */
/* 隐私页特有排版微调 */
    .privacy-hero {
      padding: 4rem 0 2.5rem;
      border-bottom: 1px solid var(--light-line);
    }
.privacy-hero .hero-title {
      font-weight: 800;
      color: var(--text-color);
      letter-spacing: -0.02em;
    }
.privacy-section {
      padding: 3rem 0;
    }
.privacy-section + .privacy-section {
      border-top: 1px solid var(--light-line);
    }
.privacy-section h2 {
      font-size: 1.65rem;
      font-weight: 700;
      color: var(--text-color);
      margin-bottom: 1.5rem;
      display: flex;
      align-items: center;
      gap: .6rem;
    }
.privacy-section h2 i {
      color: var(--main-color);
      font-size: 1.4rem;
    }
.privacy-section h3 {
      font-size: 1.2rem;
      font-weight: 600;
      color: var(--text-color);
      margin: 1.8rem 0 1rem;
      padding-left: .75rem;
      border-left: 4px solid var(--accent-color);
    }
.privacy-section p, .privacy-section li {
      color: var(--text-color);
      line-height: 1.8;
    }
.privacy-section ul, .privacy-section ol {
      padding-left: 1.5rem;
      margin-bottom: 1.2rem;
    }
.privacy-card {
      background: var(--white);
      border: 1px solid var(--light-line);
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      padding: 2rem 2rem 1.5rem;
      margin-bottom: 2rem;
    }
.privacy-card:hover {
      box-shadow: var(--shadow-md);
    }
.info-chip {
      background: var(--bg-color);
      color: var(--text-color);
      border-radius: 30px;
      padding: .4rem 1rem;
      font-size: .85rem;
      display: inline-block;
      border: 1px solid var(--light-line);
    }
.info-chip i {
      color: var(--main-color);
      margin-right: .3rem;
    }
.updated-badge {
      font-size: .85rem;
      color: var(--main-color);
      background: rgba(100,116,139,.1);
      padding: .3rem .8rem;
      border-radius: 30px;
      display: inline-block;
      margin-top: 1rem;
    }
.footer-note {
      color: var(--accent-color);
      font-size: .9rem;
    }
/* 覆盖 bootstrap 组件默认白底（若有） */
    .privacy-section .card, .privacy-section .card-body {
      background: var(--white);
      color: var(--text-color);
      border-color: var(--light-line);
    }
.privacy-section .form-control {
      background: var(--white);
      color: var(--text-color);
      border-color: var(--light-line);
    }

/* --- 子页面追加 --- */
.terms-hero {
            padding: 80px 0 40px;
            background: var(--bg-color);
            position: relative;
            overflow: hidden;
        }
.terms-hero .container {
            position: relative;
            z-index: 2;
        }
.terms-hero h1 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-color);
            margin-bottom: 12px;
        }
.terms-hero p {
            color: var(--main-color);
            font-size: 1.05rem;
        }
.terms-section {
            padding: 20px 0 50px;
        }
.terms-container {
            max-width: 860px;
            margin: 0 auto;
            padding: 0 20px;
        }
.terms-card {
            background: var(--white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-md);
            padding: 36px 40px;
            margin-bottom: 24px;
        }
.terms-card h2 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-color);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--light-line);
            display: flex;
            align-items: center;
            gap: 10px;
        }
.terms-card h2 i {
            color: var(--main-color);
            font-size: 1.2rem;
        }
.terms-card p {
            color: var(--text-color);
            line-height: 1.75;
            margin-bottom: 12px;
            font-size: 0.95rem;
        }
.terms-card ul {
            padding-left: 20px;
            margin-bottom: 12px;
        }
.terms-card ul li {
            color: var(--text-color);
            line-height: 1.75;
            font-size: 0.95rem;
            margin-bottom: 6px;
        }
.terms-card strong {
            color: var(--text-color);
            font-weight: 600;
        }
.terms-card .highlight {
            background: var(--bg-color);
            border-left: 4px solid var(--main-color);
            padding: 14px 18px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 16px 0;
            font-size: 0.93rem;
            color: var(--text-color);
        }
.terms-card .last-updated {
            display: inline-block;
            font-size: 0.85rem;
            color: var(--main-color);
            background: var(--bg-color);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 16px;
        }
.terms-hero { padding: 50px 0 30px; }
.terms-hero h1 { font-size: 1.6rem; }
.terms-card { padding: 24px 20px; }

/* --- 子页面追加 --- */
.contact-card .btn { margin-top: .5rem; }
.contact-section { padding: 4rem 0; }
.contact-section + .contact-section { border-top: 1px solid var(--light-line); }
.contact-section h2 { font-size: 1.75rem; font-weight: 800; color: var(--text-color); margin-bottom: 1rem; }
.contact-section .section-desc { max-width: 720px; }
.contact-form .form-label { font-weight: 600; color: var(--text-color); }
.contact-form .form-control { background: var(--white); border-color: var(--light-line); color: var(--text-color); border-radius: var(--radius); padding: .6rem .9rem; }
.contact-form .form-control:focus { border-color: var(--main-color); box-shadow: 0 0 0 .2rem rgba(100,116,139,.15); }
.contact-form .form-control::placeholder { color: rgba(30,41,59,.4); }
.contact-form .btn-main { margin-top: 1rem; }
.faq-wrap .faq-item { background: var(--white); border: 1px solid var(--light-line); border-radius: var(--radius); padding: 1.25rem 1.5rem; margin-bottom: .75rem; }
.faq-wrap .faq-question { font-weight: 600; color: var(--text-color); font-size: 1rem; margin-bottom: .25rem; }
.faq-wrap .faq-answer { font-size: .9rem; color: var(--text-color); opacity: .8; line-height: 1.7; }
.contact-extra { background: rgba(100,116,139,.04); border-radius: var(--radius); padding: 1.5rem; border: 1px solid var(--light-line); }
.contact-section { padding: 2.5rem 0; }
.contact-section h2 { font-size: 1.4rem; }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.form-select { background-color:#fff !important; color:#1e293b !important; border-color:rgba(0,0,0,.12) !important; }
.table { color:#1e293b !important; border-color:rgba(0,0,0,.12) !important; --bs-table-bg:transparent !important; --bs-table-color:#1e293b !important; }