:root {
  --primary: #ea580c;
  --accent: #d97706;
  --bg: #fffbf5;
  --text: #1c1917;
  --primary-rgb: 234, 88, 12;
  --accent-rgb: 217, 119, 6;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', '思源黑体', 'Source Han Sans CN', 'Noto Sans CJK SC', sans-serif;
  font-size: 14px;
  line-height: 1.7;
  overflow-x: hidden;
}
h1, h2, h3, h4, .serif-font {
  font-family: '思源宋体', 'Source Han Serif CN', 'Noto Serif CJK SC', Georgia, serif;
  font-weight: 700;
}
.navbar-cloud {
  position: sticky;
  top: 0;
  z-index: 1050;
  background: rgba(255, 251, 245, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 2px solid rgba(234, 88, 12, 0.15);
  box-shadow: 0 4px 20px rgba(0,0,0,0.04);
  padding: 12px 0;
}
.navbar-cloud .navbar-brand {
  font-weight: 900;
  font-size: 1.5rem;
  color: var(--primary);
  letter-spacing: 1px;
}
.navbar-cloud .nav-link {
  color: var(--text);
  font-weight: 600;
  font-size: 0.9rem;
  margin: 0 8px;
  transition: color 0.3s;
}
.navbar-cloud .nav-link:hover { color: var(--primary); }
.hero-split {
  min-height: 90vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 80px 0;
  overflow: hidden;
}
.hero-left {
  background: linear-gradient(135deg, #fff3e6 0%, #ffe8d6 100%);
  padding: 60px 50px;
  border-radius: 0 60px 60px 0;
  position: relative;
  box-shadow: inset 0 2px 20px rgba(234, 88, 12, 0.08);
}
.hero-right {
  padding: 40px;
  position: relative;
  z-index: 2;
}
.hero-stats {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
  margin: 30px 0;
}
.stat-item h3 {
  font-size: 3.2rem;
  font-weight: 900;
  color: var(--primary);
  line-height: 1.2;
}
.stat-item p { font-size: 0.9rem; opacity: 0.7; font-weight: 600; }
.hero-cta .btn-primary {
  background: var(--primary);
  border: none;
  padding: 14px 36px;
  font-weight: 700;
  border-radius: 50px;
  box-shadow: 0 8px 20px rgba(234, 88, 12, 0.3);
  transition: all 0.3s;
}
.hero-cta .btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(234, 88, 12, 0.4);
}
.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.5;
  pointer-events: none;
}
.orb-1 { width: 300px; height: 300px; background: rgba(234, 88, 12, 0.2); top: -50px; right: -80px; }
.orb-2 { width: 200px; height: 200px; background: rgba(217, 119, 6, 0.25); bottom: -30px; left: 20px; }
.orb-3 { width: 150px; height: 150px; background: rgba(234, 88, 12, 0.15); top: 40%; left: -60px; }
.section-padding { padding: 80px 0; }
.section-title {
  font-size: 2.2rem;
  font-weight: 900;
  margin-bottom: 40px;
  position: relative;
  display: inline-block;
}
.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 60px;
  height: 4px;
  background: var(--primary);
  border-radius: 4px;
}
.long-read {
  font-size: 15px;
  line-height: 2;
}
.long-read p { margin-bottom: 1.8em; }
.timeline-item {
  position: relative;
  padding-left: 30px;
  margin-bottom: 30px;
  border-left: 3px solid var(--primary);
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -8px;
  top: 5px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid var(--bg);
}
.timeline-item h5 { font-weight: 800; color: var(--primary); }
.compare-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0,0,0,0.08);
}
.compare-table th, .compare-table td {
  padding: 16px 20px;
  text-align: center;
  border-bottom: 1px solid rgba(0,0,0,0.05);
}
.compare-table th {
  background: linear-gradient(180deg, var(--primary), var(--accent));
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
}
.compare-table tr:last-child td { border-bottom: none; }
.compare-table tr:nth-child(even) td { background: #fff7f0; }
.faq-item {
  background: #fff;
  border-radius: 16px;
  padding: 24px 28px;
  margin-bottom: 16px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.04);
  border-left: 4px solid var(--primary);
}
.faq-item h5 { font-weight: 700; margin-bottom: 8px; color: var(--text); }
.faq-item p { opacity: 0.8; margin: 0; }
.tab-content-wrapper {
  background: #fff;
  border-radius: 24px;
  padding: 30px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.06);
}
.nav-tabs .nav-link {
  border: none;
  font-weight: 700;
  color: var(--text);
  padding: 12px 24px;
  border-radius: 50px;
  margin-right: 10px;
  background: #f5ece4;
}
.nav-tabs .nav-link.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 15px rgba(234, 88, 12, 0.3);
}
.feature-card {
  background: #fff;
  border-radius: 20px;
  padding: 30px;
  height: 100%;
  box-shadow: 0 4px 20px rgba(0,0,0,0.05);
  transition: all 0.4s ease;
  border: 1px solid rgba(0,0,0,0.02);
  opacity: 0;
  transform: translateY(40px);
}
.feature-card.visible { opacity: 1; transform: translateY(0); }
.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 40px rgba(234, 88, 12, 0.15);
}
.feature-card .icon-wrap {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(234,88,12,0.1), rgba(217,119,6,0.1));
  color: var(--primary);
}
.cta-section {
  background: linear-gradient(135deg, #1c1917 0%, #292524 100%);
  color: #fff;
  border-radius: 32px;
  padding: 60px;
  position: relative;
  overflow: hidden;
}
.cta-section .btn-cta {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 16px 44px;
  font-size: 1.1rem;
  font-weight: 700;
  border-radius: 50px;
  box-shadow: 0 10px 30px rgba(234, 88, 12, 0.4);
  transition: all 0.3s;
}
.cta-section .btn-cta:hover { transform: scale(1.04); box-shadow: 0 14px 40px rgba(234, 88, 12, 0.5); }
.friend-links {
  background: #fff;
  border-radius: 20px;
  padding: 30px 40px;
  margin-top: 60px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.04);
  border: 1px solid #f0e9e0;
}
.friend-links h6 {
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 15px;
  letter-spacing: 2px;
}
.friend-links .links-wrap { font-size: 0.9rem; color: #555; line-height: 2.2; }
.footer-cloud {
  background: #1c1917;
  color: rgba(255,255,255,0.7);
  padding: 40px 0 20px;
  margin-top: 80px;
}
.footer-cloud a { color: rgba(255,255,255,0.7); text-decoration: none; }
.footer-cloud a:hover { color: var(--primary); }
.back-to-top {
  position: fixed;
  bottom: 40px;
  right: 40px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  border: none;
  font-size: 1.2rem;
  box-shadow: 0 8px 20px rgba(234, 88, 12, 0.4);
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s;
  z-index: 1050;
  display: flex;
  align-items: center;
  justify-content: center;
}
.back-to-top.show { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--accent); transform: translateY(-3px); }
@media (max-width: 991px) {
  .hero-left { border-radius: 0 0 40px 40px; }
  .hero-right { padding: 40px 20px; }
  .section-padding { padding: 60px 0; }
  .cta-section { padding: 40px 25px; }
  .back-to-top { bottom: 20px; right: 20px; }
}

/* --- 子页面追加 --- */
/* 关于页专属微调 */
    .about-hero { position: relative; overflow: hidden; }
.about-hero .hero-left { padding-right: 2rem; }
.about-meta-list { list-style: none; padding: 0; margin: 1.5rem 0 0; }
.about-meta-list li { padding: .5rem 0; border-bottom: 1px dashed rgba(var(--primary-rgb), .2); display: flex; align-items: center; gap: .75rem; }
.about-meta-list li i { color: var(--primary); width: 1.5rem; text-align: center; }
.value-item { background: var(--bg); border: 1px solid rgba(var(--primary-rgb), .15); border-radius: 12px; padding: 1.75rem 1.5rem; height: 100%; transition: all .3s ease; }
.value-item:hover { transform: translateY(-4px); box-shadow: 0 8px 30px rgba(var(--primary-rgb), .1); border-color: var(--primary); }
.value-item i { font-size: 2rem; color: var(--primary); margin-bottom: 1rem; }
.value-item h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: .5rem; color: var(--text); }
.value-item p { font-size: .9rem; color: var(--text); opacity: .85; margin-bottom: 0; line-height: 1.6; }
.journey-card { background: var(--bg); border-left: 4px solid var(--primary); border-radius: 0 12px 12px 0; padding: 1.75rem 1.5rem; box-shadow: 0 2px 15px rgba(0,0,0,.03); margin-bottom: 1.25rem; }
.journey-card h4 { font-size: 1.05rem; font-weight: 700; color: var(--primary); margin-bottom: .5rem; }
.journey-card p { font-size: .9rem; color: var(--text); opacity: .85; margin-bottom: 0; line-height: 1.7; }
.stat-block { text-align: center; padding: 1.5rem 1rem; }
.stat-block .number { font-size: 2.25rem; font-weight: 900; color: var(--primary); line-height: 1.2; }
.stat-block .label { font-size: .85rem; color: var(--text); opacity: .7; margin-top: .25rem; }
.about-hero .hero-left { padding-right: 0; }
.value-item { padding: 1.25rem; }

/* --- 子页面追加 --- */
.guide-hero { padding: 60px 0 40px; }
.guide-section { padding: 30px 0; border-bottom: 1px solid rgba(0,0,0,.05); }
.guide-section:last-child { border-bottom: none; }
.step-card { background: rgba(234, 88, 12, .04); border-left: 4px solid var(--primary); padding: 20px 24px; border-radius: 0 12px 12px 0; margin-bottom: 16px; }
.step-card h4 { color: var(--primary); font-weight: 700; margin-bottom: 8px; font-size: 1.1rem; }
.tip-box { background: rgba(217, 119, 6, .08); border: 1px solid rgba(217, 119, 6, .2); padding: 16px 20px; border-radius: 12px; margin: 20px 0; }
.tip-box i { color: var(--accent); margin-right: 8px; }
.code-inline { background: rgba(234, 88, 12, .08); color: var(--primary); padding: 2px 6px; border-radius: 4px; font-family: monospace; font-size: .9em; }
.guide-list { list-style: none; padding-left: 0; }
.guide-list li { padding: 8px 0; padding-left: 28px; position: relative; color: var(--text); }
.guide-list li::before { content: '\f00c'; font-family: 'Font Awesome 6 Free'; font-weight: 900; color: var(--primary); position: absolute; left: 0; top: 8px; font-size: .9em; }
.shortcut-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; margin: 20px 0; }
.shortcut-item { background: rgba(0,0,0,.02); border: 1px solid rgba(0,0,0,.06); border-radius: 10px; padding: 16px; text-align: center; }
.shortcut-item .key { display: inline-block; background: var(--primary); color: #fff; padding: 4px 12px; border-radius: 6px; font-family: monospace; font-weight: 600; margin-bottom: 8px; font-size: .9rem; }
.shortcut-item p { margin: 0; font-size: .85rem; color: var(--text); }
.device-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.device-item { background: rgba(234, 88, 12, .04); border-radius: 10px; padding: 16px; text-align: center; }
.device-item i { font-size: 2rem; color: var(--primary); margin-bottom: 8px; }
.device-item p { margin: 0; font-size: .85rem; font-weight: 500; }

/* --- 子页面追加 --- */
/* 确保卡片、表单等Bootstrap组件使用站点配色，防止白底黑字突兀 */
        .card, .card-body, .card-header, .card-footer {
            background: var(--bg);
            color: var(--text);
            border-color: rgba(var(--primary-rgb), 0.2);
        }
.list-group-item {
            background: var(--bg);
            color: var(--text);
            border-color: rgba(var(--primary-rgb), 0.15);
        }
.accordion-item, .accordion-button, .accordion-body {
            background: var(--bg);
            color: var(--text);
        }
.accordion-button:not(.collapsed) {
            background: rgba(var(--primary-rgb), 0.08);
            color: var(--primary);
        }
.form-control, .form-select {
            background: rgba(255, 255, 255, 0.6);
            border-color: rgba(var(--primary-rgb), 0.3);
            color: var(--text);
        }
.form-control::placeholder {
            color: rgba(28, 25, 23, 0.5);
        }
.navbar, .navbar-brand, .nav-link {
            color: var(--text);
        }
/* 导航栏高亮当前页 */
        .navbar .nav-link[href="/disclaimer.html"] {
            color: var(--primary);
            font-weight: 600;
        }
/* 优化长文阅读背景 */
        .long-read {
            background: rgba(255, 251, 245, 0.7);
        }
/* 覆盖部分Bootstrap链接颜色 */
        a {
            color: var(--primary);
        }

/* --- 子页面追加 --- */
.privacy-hero {
            padding: 6rem 0 3rem;
            background: radial-gradient(ellipse at 20% 20%, rgba(var(--primary-rgb), 0.12), transparent 50%), radial-gradient(ellipse at 80% 10%, rgba(var(--accent-rgb), 0.08), transparent 40%), var(--bg);
        }
.privacy-card {
            background: #fff;
            border: 1px solid rgba(var(--primary-rgb), 0.12);
            border-radius: 1rem;
            padding: 2.5rem 2.5rem;
            margin-bottom: 2.5rem;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.03);
            transition: box-shadow 0.3s ease, transform 0.3s ease;
        }
.privacy-card:hover {
            box-shadow: 0 4px 30px rgba(var(--primary-rgb), 0.08);
            transform: translateY(-2px);
        }
.privacy-card h2 {
            color: var(--primary);
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
.privacy-card h2 i {
            color: var(--primary);
            font-size: 1.2rem;
        }
.privacy-card h3 {
            color: var(--text);
            font-size: 1.1rem;
            font-weight: 600;
            margin-top: 1.5rem;
            margin-bottom: 0.5rem;
        }
.privacy-card p {
            color: #555;
            line-height: 1.8;
            font-size: 0.95rem;
            margin-bottom: 1rem;
        }
.privacy-card ul {
            padding-left: 1.5rem;
            margin-bottom: 1rem;
        }
.privacy-card li {
            color: #555;
            line-height: 1.8;
            font-size: 0.95rem;
            margin-bottom: 0.4rem;
        }
.privacy-badge {
            display: inline-block;
            background: rgba(var(--primary-rgb), 0.08);
            color: var(--primary);
            padding: 0.3rem 0.8rem;
            border-radius: 2rem;
            font-size: 0.8rem;
            font-weight: 500;
            margin-bottom: 0.5rem;
        }
.last-updated {
            color: #999;
            font-size: 0.85rem;
            margin-top: 0.5rem;
            text-align: right;
        }
.cta-section h2 {
            color: var(--primary);
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 1rem;
        }
.cta-section p {
            color: var(--text);
            font-size: 1rem;
            max-width: 600px;
            margin: 0 auto 1.5rem;
        }
.privacy-card {
                padding: 1.5rem 1.25rem;
            }
.privacy-card h2 {
                font-size: 1.2rem;
            }