/* ============================================
   中安贝窝 — 宠物纠纷维权服务平台样式
   配色：深海蓝(#164080) + 柔和浅橘(#ff9b73)
   风格：法律权威 + 宠物温情
   ============================================ */

/* ---- 基础变量 ---- */
:root {
    /* 主色 — 深海蓝：司法鉴定/央企权威/司法效力 */
    --primary: #164080;
    --primary-dark: #0F2D5C;
    --primary-light: #2E5BA8;
    --primary-lighter: #E8EEF6;

    /* 辅助色 — 柔和浅橘：平衡法务冰冷感，贴合宠物温情 */
    --secondary: #ff9b73;
    --secondary-dark: #E8855E;
    --secondary-light: #FFE4D6;

    /* 中性色 */
    --bg-primary: #F7F9FC;
    --bg-secondary: #EEF2F7;
    --bg-card: #FFFFFF;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-muted: #999999;
    --border: #E2E8F0;

    /* 渐变 */
    --gradient-main: linear-gradient(135deg, #164080 0%, #2E5BA8 100%);
    --gradient-warm: linear-gradient(135deg, #ff9b73 0%, #FFB088 100%);
    --gradient-text: linear-gradient(135deg, #164080 0%, #2E5BA8 50%, #ff9b73 100%);

    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(22, 64, 128, 0.06);
    --shadow-md: 0 8px 24px rgba(22, 64, 128, 0.10);
    --shadow-lg: 0 16px 48px rgba(22, 64, 128, 0.15);
    --shadow-hover: 0 20px 60px rgba(22, 64, 128, 0.20);
    --shadow-card: 0 4px 16px rgba(22, 64, 128, 0.08);

    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    /* 过渡 */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- Reset ---- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
                 "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
table { border-collapse: collapse; width: 100%; }

/* ---- 通用容器 ---- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; position: relative; }

.section-header { text-align: center; max-width: 680px; margin: 0 auto 50px; }

.section-tag {
    display: inline-block; font-size: 0.8rem; font-weight: 700; letter-spacing: 2px;
    color: var(--primary); background: var(--primary-lighter);
    padding: 6px 16px; border-radius: 20px; margin-bottom: 16px;
}

.section-title {
    font-size: 2rem; font-weight: 800; line-height: 1.3;
    margin-bottom: 12px; letter-spacing: -0.5px; color: var(--text-primary);
}

.section-desc { font-size: 1rem; color: var(--text-secondary); }

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ---- 按钮 ---- */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 28px; border-radius: var(--radius-md);
    font-size: 0.95rem; font-weight: 600; cursor: pointer;
    border: none; transition: var(--transition); white-space: nowrap;
}
.btn-primary {
    background: var(--primary); color: #fff;
    box-shadow: 0 4px 16px rgba(22, 64, 128, 0.3);
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(22, 64, 128, 0.4); }
.btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.btn-sm { padding: 8px 18px; font-size: 0.85rem; }
.btn-lg { padding: 16px 36px; font-size: 1.05rem; }
.btn-block { width: 100%; justify-content: center; }
.btn-arrow { transition: transform 0.3s ease; }
.btn:hover .btn-arrow { transform: translateX(4px); }

/* ---- 导航栏 ---- */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(247, 249, 252, 0.9);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent; transition: var(--transition);
}
.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    border-bottom-color: var(--border); box-shadow: var(--shadow-sm);
}
.nav-container {
    max-width: 1200px; margin: 0 auto; padding: 0 24px;
    height: 64px; display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 8px; font-size: 1.2rem; font-weight: 800; }
.logo-icon { font-size: 1.4rem; }
.logo-text {
    background: var(--gradient-main);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
}
.nav-menu { display: flex; gap: 28px; }
.nav-link {
    font-size: 0.9rem; font-weight: 500; color: var(--text-secondary);
    transition: var(--transition); position: relative; padding: 4px 0;
}
.nav-link:hover, .nav-link.active { color: var(--primary); }
.nav-link::after {
    content: ''; position: absolute; bottom: -2px; left: 0;
    width: 0; height: 2px; background: var(--primary);
    border-radius: 2px; transition: width 0.3s ease;
}
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
.nav-cta { display: flex; align-items: center; }
.nav-toggle {
    display: none; flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer; padding: 8px;
}
.nav-toggle span { width: 24px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: var(--transition); }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ---- Hero ---- */
.hero {
    min-height: auto; display: flex; align-items: center;
    position: relative; overflow: hidden; padding-top: 96px;
    background: linear-gradient(180deg, var(--primary-lighter) 0%, var(--bg-primary) 100%);
}
.hero-bg { position: absolute; inset: 0; z-index: 0; overflow: hidden; }
.hero-blob {
    position: absolute; border-radius: 50%; filter: blur(80px);
    opacity: 0.3; animation: blob-float 20s ease-in-out infinite;
}
.blob-1 { width: 500px; height: 500px; background: var(--primary-light); top: -100px; right: -50px; }
.blob-2 { width: 400px; height: 400px; background: var(--secondary); bottom: -50px; left: -100px; animation-delay: -5s; opacity: 0.2; }
@keyframes blob-float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -50px) scale(1.1); }
    66% { transform: translate(-20px, 30px) scale(0.95); }
}
.hero-container {
    max-width: 960px; margin: 0 auto; padding: 40px 24px 70px;
    display: flex; flex-direction: column; align-items: center;
    text-align: center; position: relative; z-index: 1; width: 100%;
}

/* 顶部3张信任卡片 — 居中紧凑横向排列 */
.hero-trust-row {
    display: flex; gap: 18px; justify-content: center; align-items: center;
    margin-bottom: 36px; animation: fadeInDown 0.8s ease;
}
.trust-mini-card {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 18px 24px;
    box-shadow: var(--shadow-card);
    display: flex; flex-direction: column; align-items: center; gap: 8px;
    min-width: 140px;
    transition: var(--transition);
}
.trust-mini-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.trust-mini-icon { font-size: 1.8rem; line-height: 1; }
.trust-mini-label { font-weight: 700; font-size: 0.95rem; color: var(--text-primary); }
.trust-mini-tag { font-size: 0.8rem; color: var(--primary); font-weight: 600; }
.trust-mini-tag-warm { color: var(--secondary); }
.trust-mini-bar {
    width: 100%; height: 5px; background: var(--bg-secondary);
    border-radius: 3px; overflow: hidden; margin-top: 4px;
}
.trust-mini-bar span {
    display: block; height: 100%;
    background: var(--gradient-main);
    border-radius: 3px; animation: barGrow 1.5s ease 0.8s both;
}
@keyframes barGrow { from { width: 0; } }

.hero-content { display: flex; flex-direction: column; align-items: center; width: 100%; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(255, 255, 255, 0.8); backdrop-filter: blur(10px);
    border: 1px solid var(--border); padding: 8px 18px; border-radius: 20px;
    font-size: 0.85rem; font-weight: 500; color: var(--text-secondary);
    margin-bottom: 20px; animation: fadeInDown 0.8s ease;
}
.badge-dot { width: 8px; height: 8px; background: var(--secondary); border-radius: 50%; animation: pulse 2s ease infinite; }
@keyframes pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(255, 155, 115, 0.4); }
    50% { opacity: 0.8; box-shadow: 0 0 0 8px rgba(255, 155, 115, 0); }
}
.hero-title {
    font-size: 2.6rem; font-weight: 900; line-height: 1.25;
    letter-spacing: -1px; margin-bottom: 18px; color: var(--text-primary);
    animation: fadeInUp 0.8s ease 0.1s both;
}
.hero-subtitle {
    font-size: 1.05rem; color: var(--text-secondary); line-height: 1.7;
    margin-bottom: 28px; animation: fadeInUp 0.8s ease 0.2s both;
    max-width: 640px;
}
.hero-actions {
    display: flex; gap: 14px; margin-bottom: 40px;
    animation: fadeInUp 0.8s ease 0.3s both; flex-wrap: wrap;
    justify-content: center;
}
.hero-stats {
    display: flex; align-items: center; gap: 28px;
    animation: fadeInUp 0.8s ease 0.4s both;
    justify-content: center;
}
.stat-item { text-align: center; }
.stat-number {
    font-size: 2rem; font-weight: 900;
    color: var(--primary); line-height: 1;
}
.stat-label { font-size: 0.95rem; font-weight: 600; color: var(--text-secondary); }
.stat-divider { width: 1px; height: 28px; background: var(--border); }


/* ---- 动画 ---- */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeInDown { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }

/* ---- 关于我们（3卡片） ---- */
.about { background: var(--bg-card); }
.about-cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.about-card-3 {
    background: var(--bg-primary); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: 36px 28px;
    text-align: center; transition: var(--transition);
    border-top: 3px solid var(--primary);
}
.about-card-3:nth-child(2) { border-top-color: var(--secondary); }
.about-card-3:nth-child(3) { border-top-color: var(--primary-light); }
.about-card-3:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.about-card-icon { font-size: 2.2rem; margin-bottom: 16px; }
.about-card-3 h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 12px; color: var(--text-primary); }
.about-card-3 p { font-size: 0.92rem; color: var(--text-secondary); line-height: 1.7; }

/* ---- 服务项目 ---- */
.services { background: var(--bg-primary); }
.services-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.service-card {
    background: var(--bg-card); border-radius: var(--radius-lg);
    padding: 32px 28px; border: 1px solid var(--border);
    transition: var(--transition); position: relative; overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.service-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: var(--primary); transform: scaleX(0);
    transform-origin: left; transition: transform 0.4s ease;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.service-card:hover::before { transform: scaleX(1); }
.service-icon-wrap {
    width: 56px; height: 56px; border-radius: var(--radius-md);
    background: var(--primary-lighter); display: flex; align-items: center;
    justify-content: center; margin-bottom: 18px; transition: var(--transition);
}
.service-card:hover .service-icon-wrap { transform: scale(1.1) rotate(-5deg); background: var(--secondary-light); }
.service-icon { font-size: 1.6rem; }
.service-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 10px; color: var(--text-primary); }
.service-desc { font-size: 0.92rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 16px; }
.service-list { margin-bottom: 16px; }
.service-list li {
    font-size: 0.88rem; color: var(--text-secondary);
    padding: 5px 0; padding-left: 20px; position: relative;
}
.service-list li::before {
    content: '✓'; position: absolute; left: 0;
    color: var(--primary); font-weight: 700; font-size: 0.85rem;
}
.service-detail-toggle {
    display: flex; align-items: center; justify-content: space-between;
    cursor: pointer; padding: 8px 0; font-size: 0.85rem; font-weight: 600;
    color: var(--primary); border-top: 1px solid var(--border);
    transition: var(--transition);
    min-height: 44px;
}
.service-detail-toggle:hover { color: var(--primary-dark); }
.toggle-icon { transition: transform 0.3s ease; }
.service-detail-toggle.active .toggle-icon { transform: rotate(180deg); }
.service-detail-content {
    max-height: 0; overflow: hidden; transition: max-height 0.4s ease;
}
.service-detail-toggle.active + .service-detail-content {
    max-height: 300px;
}
.service-detail-content p {
    font-size: 0.88rem; color: var(--text-secondary); line-height: 1.8;
    padding: 12px 0 4px;
}

/* CTA引导栏 */
.cta-bar {
    margin-top: 40px; padding: 24px 36px;
    background: var(--gradient-main); border-radius: var(--radius-lg);
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 16px;
}
.cta-bar-text { color: #fff; font-size: 1rem; }
.cta-bar-text strong { font-size: 1.1rem; }
.cta-bar .btn { background: var(--secondary); color: #fff; }
.cta-bar .btn:hover { background: var(--secondary-dark); }

/* ---- 维权流程（横向可视化） ---- */
.process { background: var(--bg-card); }
.process-flowchart {
    display: flex; align-items: flex-start; justify-content: center;
    flex-wrap: wrap; gap: 0;
}
.flow-step {
    display: flex; flex-direction: column; align-items: center;
    text-align: center; width: 120px; position: relative;
    transition: var(--transition); flex-shrink: 0;
}
.flow-step:hover { transform: translateY(-6px); }
.flow-number {
    position: absolute; top: -10px; right: 8px;
    width: 26px; height: 26px; border-radius: 50%;
    background: var(--primary); color: #fff;
    font-size: 0.78rem; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 12px rgba(22, 64, 128, 0.3);
    z-index: 2;
}
.flow-step:nth-child(odd) .flow-number { background: var(--secondary); box-shadow: 0 4px 12px rgba(255, 155, 115, 0.3); }
.flow-icon {
    width: 64px; height: 64px; border-radius: var(--radius-md);
    background: var(--bg-primary); border: 2px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.6rem; margin-bottom: 10px; transition: var(--transition);
}
.flow-step:hover .flow-icon {
    border-color: var(--primary); background: var(--primary-lighter);
    transform: scale(1.05);
}
.flow-step h4 { font-size: 0.88rem; font-weight: 700; margin-bottom: 4px; color: var(--text-primary); }
.flow-step p { font-size: 0.76rem; color: var(--text-muted); line-height: 1.4; }
.flow-connector {
    display: flex; align-items: center; height: 64px; margin-top: 0;
}
.flow-connector span {
    display: block; width: 30px; height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 1px;
}

/* ---- 成功案例 ---- */
.cases { background: var(--bg-primary); }
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.case-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: 32px 28px;
    transition: var(--transition); box-shadow: var(--shadow-sm);
    display: flex; flex-direction: column;
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.case-tag {
    display: inline-block; font-size: 0.78rem; font-weight: 700;
    color: var(--secondary); background: var(--secondary-light);
    padding: 4px 12px; border-radius: 12px; margin-bottom: 14px;
    align-self: flex-start;
}
.case-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 16px; color: var(--text-primary); }
.case-body { flex: 1; }
.case-body p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 10px; }
.case-body strong { color: var(--text-primary); }
.case-result {
    display: flex; align-items: center; gap: 12px;
    margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border);
}
.result-badge {
    font-size: 0.82rem; font-weight: 700; color: #fff;
    background: var(--primary); padding: 4px 12px; border-radius: 12px;
}
.result-time { font-size: 0.82rem; color: var(--text-muted); }

/* 客户证言 */
.testimonials {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
    margin-top: 40px;
}
.testimonial-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-md); padding: 28px 24px;
    position: relative; transition: var(--transition);
}
.testimonial-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.quote-mark {
    font-size: 3rem; color: var(--primary-lighter);
    font-family: Georgia, serif; line-height: 1; margin-bottom: 8px;
}
.testimonial-card p { font-size: 0.92rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 14px; }
.testimonial-author { font-size: 0.85rem; font-weight: 600; color: var(--text-muted); }

/* ---- 合作资质 ---- */
.credentials { background: var(--bg-card); }
.logo-wall {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
    margin-bottom: 32px;
}
.logo-item {
    background: var(--bg-primary); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: 32px 20px;
    text-align: center; transition: var(--transition);
}
.logo-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--primary-light); }
.logo-placeholder {
    width: 64px; height: 64px; margin: 0 auto 14px;
    border-radius: 50%; background: var(--primary-lighter);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.8rem;
}
.logo-name { font-size: 0.95rem; font-weight: 700; color: var(--text-primary); margin-bottom: 6px; }
.logo-desc { font-size: 0.82rem; color: var(--text-muted); }
.credentials-note {
    display: flex; gap: 16px; padding: 24px;
    background: var(--primary-lighter); border-radius: var(--radius-md);
    border: 1px solid var(--border);
}
.cred-note-icon { font-size: 1.5rem; flex-shrink: 0; }
.credentials-note p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.7; }

/* ---- 收费标准 ---- */
.pricing { background: var(--bg-primary); }
.pricing-tiers {
    display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 24px;
}
.pricing-tier {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-lg); overflow: hidden;
    transition: var(--transition); box-shadow: var(--shadow-sm);
}
.pricing-tier:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.tier-header { padding: 24px 24px 20px; text-align: center; color: #fff; }
.tier-header-c { background: var(--gradient-main); }
.tier-header-b { background: linear-gradient(135deg, var(--secondary), var(--secondary-dark)); }
.tier-header-ins { background: linear-gradient(135deg, var(--primary-light), var(--primary)); }
.tier-icon { font-size: 1.8rem; margin-bottom: 8px; }
.tier-header h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 4px; }
.tier-header p { font-size: 0.82rem; opacity: 0.9; }
.tier-body { padding: 24px; }
.tier-item {
    display: flex; justify-content: space-between; align-items: center;
    padding: 10px 0; border-bottom: 1px solid var(--border);
    font-size: 0.88rem;
}
.tier-item:last-of-type { border-bottom: none; }
.tier-name { color: var(--text-secondary); }
.tier-price { font-weight: 700; color: var(--primary); white-space: nowrap; }
.tier-toggle {
    width: 100%; padding: 10px; margin-top: 8px;
    background: var(--bg-secondary); border: none; border-radius: var(--radius-sm);
    font-size: 0.82rem; font-weight: 600; color: var(--primary);
    cursor: pointer; transition: var(--transition); min-height: 44px;
}
.tier-toggle:hover { background: var(--primary-lighter); }
.tier-toggle.active { color: var(--secondary); }
.tier-extra {
    max-height: 0; overflow: hidden; transition: max-height 0.4s ease;
}
.tier-toggle.active + .tier-extra {
    max-height: 500px;
}
.tier-features { display: flex; flex-direction: column; gap: 12px; margin-bottom: 20px; }
.tier-features li {
    font-size: 0.88rem; color: var(--text-secondary); line-height: 1.6;
}
.pricing-note {
    display: flex; gap: 16px; margin-top: 32px; padding: 24px;
    background: var(--primary-lighter); border-radius: var(--radius-md);
    border: 1px solid var(--border);
}
.note-icon { font-size: 1.5rem; flex-shrink: 0; }
.note-content { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.7; }

/* ---- 常见FAQ ---- */
.faq { background: var(--bg-card); }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
    border: 1px solid var(--border); border-radius: var(--radius-md);
    margin-bottom: 12px; overflow: hidden; transition: var(--transition);
    background: var(--bg-primary);
}
.faq-item:hover { border-color: var(--primary-light); box-shadow: var(--shadow-sm); }
.faq-question {
    width: 100%; padding: 18px 24px; background: none; border: none;
    display: flex; justify-content: space-between; align-items: center;
    font-size: 0.98rem; font-weight: 600; color: var(--text-primary);
    cursor: pointer; transition: var(--transition); text-align: left;
    min-height: 44px;
}
.faq-question:hover { color: var(--primary); }
.faq-icon {
    font-size: 1.4rem; color: var(--primary); transition: transform 0.3s ease;
    flex-shrink: 0; margin-left: 12px;
}
.faq-question.active .faq-icon { transform: rotate(45deg); }
.faq-answer {
    max-height: 0; overflow: hidden; transition: max-height 0.4s ease;
    padding: 0 24px;
}
.faq-answer.open { max-height: 300px; padding: 0 24px 18px; }
.faq-answer p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.8; }

/* ---- 联系我们 ---- */
.contact { background: var(--bg-primary); position: relative; overflow: hidden; }
.contact::before {
    content: ''; position: absolute; top: -200px; right: -200px;
    width: 500px; height: 500px; background: var(--primary-lighter);
    filter: blur(120px); opacity: 0.5; border-radius: 50%;
}
.contact-wrap {
    display: grid; grid-template-columns: 1fr 1fr; gap: 50px;
    align-items: center; position: relative; z-index: 1;
}
.contact-info .section-tag { margin-bottom: 16px; }
.contact-info .section-title { text-align: left; font-size: 2rem; }
.contact-desc { color: var(--text-secondary); font-size: 1rem; margin: 20px 0 32px; line-height: 1.8; }
.contact-details { display: flex; flex-direction: column; gap: 18px; }
.contact-detail, .contact-detail-link { display: flex; align-items: center; gap: 16px; }
.contact-detail-link { transition: var(--transition); }
.contact-detail-link:hover { transform: translateX(4px); }
.detail-icon {
    width: 48px; height: 48px; background: var(--primary-lighter);
    border-radius: var(--radius-md); display: flex; align-items: center;
    justify-content: center; font-size: 1.3rem; flex-shrink: 0;
}
.detail-label { font-size: 0.8rem; color: var(--text-muted); }
.detail-value { font-size: 1rem; font-weight: 600; color: var(--text-primary); }

/* 联系表单 */
.contact-form-wrap { position: relative; }
.contact-form {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-xl); padding: 36px; box-shadow: var(--shadow-lg);
}
.form-title { font-size: 1.3rem; font-weight: 700; margin-bottom: 22px; color: var(--text-primary); }
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block; font-size: 0.85rem; font-weight: 600;
    margin-bottom: 6px; color: var(--text-primary);
}
.required { color: var(--secondary); }
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%; padding: 12px 16px; border: 2px solid var(--border);
    border-radius: var(--radius-sm); font-size: 0.95rem; font-family: inherit;
    background: var(--bg-primary); color: var(--text-primary);
    transition: var(--transition); outline: none;
    min-height: 44px;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary); box-shadow: 0 0 0 4px rgba(22, 64, 128, 0.08);
    background: var(--bg-card);
}
.form-group textarea { resize: vertical; min-height: 80px; }
.form-note { font-size: 0.8rem; color: var(--text-muted); text-align: center; margin-top: 14px; }
.form-success {
    position: absolute; inset: 0; background: var(--bg-card);
    border-radius: var(--radius-xl); display: none;
    flex-direction: column; align-items: center; justify-content: center;
    text-align: center; padding: 40px; box-shadow: var(--shadow-lg);
}
.form-success.show { display: flex; animation: fadeIn 0.4s ease; }
.success-icon {
    width: 64px; height: 64px; background: var(--primary);
    color: #fff; border-radius: 50%; display: flex; align-items: center;
    justify-content: center; font-size: 2rem; margin-bottom: 20px;
    animation: scaleIn 0.4s ease;
}
@keyframes scaleIn { from { transform: scale(0); } to { transform: scale(1); } }
.form-success h3 { font-size: 1.4rem; margin-bottom: 8px; }
.form-success p { color: var(--text-secondary); }

/* ---- 页脚 ---- */
.footer { background: var(--primary-dark); color: rgba(255, 255, 255, 0.7); padding: 56px 0 24px; }
.footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px; margin-bottom: 36px;
}
.footer-brand .nav-logo { margin-bottom: 14px; }
.footer-brand .logo-text { color: #fff; -webkit-text-fill-color: #fff; }
.footer-desc { font-size: 0.88rem; line-height: 1.7; margin-bottom: 16px; color: rgba(255, 255, 255, 0.5); }
.footer-contact-row { margin-top: 8px; }
.footer-phone {
    display: inline-block; font-size: 1.1rem; font-weight: 700; color: var(--secondary);
    transition: var(--transition);
}
.footer-phone:hover { color: #fff; }
.footer-title { font-size: 0.98rem; font-weight: 700; color: #fff; margin-bottom: 18px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 0.88rem; color: rgba(255, 255, 255, 0.5); transition: var(--transition); }
.footer-links a:hover { color: var(--secondary); padding-left: 4px; }
.footer-links li { font-size: 0.88rem; color: rgba(255, 255, 255, 0.5); }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.1); padding-top: 24px; text-align: center; }
.footer-bottom p { font-size: 0.82rem; color: rgba(255, 255, 255, 0.4); }

/* ---- 悬浮转化按钮 ---- */
.floating-cta {
    position: fixed; bottom: 24px; right: 24px; z-index: 999;
    display: flex; flex-direction: column; gap: 12px;
}
.float-btn {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    width: 60px; height: 60px; border-radius: 50%;
    color: #fff; text-decoration: none; transition: var(--transition);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    position: relative;
}
.float-phone { background: var(--primary); }
.float-wechat { background: var(--secondary); }
.float-btn:hover { transform: scale(1.1); }
.float-icon { font-size: 1.4rem; }
.float-label {
    position: absolute; right: 70px; white-space: nowrap;
    background: var(--text-primary); color: #fff;
    padding: 6px 14px; border-radius: var(--radius-sm);
    font-size: 0.82rem; font-weight: 600;
    opacity: 0; pointer-events: none; transition: var(--transition);
}
.float-btn:hover .float-label { opacity: 1; right: 66px; }

/* ---- 回到顶部 ---- */
.back-to-top {
    position: fixed; bottom: 160px; right: 32px;
    width: 44px; height: 44px; background: var(--bg-card);
    color: var(--primary); border: 2px solid var(--border); border-radius: 50%;
    font-size: 1.2rem; cursor: pointer; box-shadow: var(--shadow-md);
    opacity: 0; visibility: hidden; transform: translateY(20px);
    transition: var(--transition); z-index: 998;
    display: flex; align-items: center; justify-content: center;
}
.back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ---- 滚动动画 ---- */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---- 响应式 ---- */
@media (max-width: 1024px) {
    .hero-actions, .hero-stats { justify-content: center; }
    .about-cards-3 { grid-template-columns: 1fr; gap: 20px; }
    .services-grid { grid-template-columns: 1fr; }
    .cases-grid { grid-template-columns: 1fr 1fr; }
    .testimonials { grid-template-columns: 1fr; }
    .logo-wall { grid-template-columns: 1fr 1fr; }
    .pricing-tiers { grid-template-columns: 1fr; }
    .contact-wrap { grid-template-columns: 1fr; }
    .contact-info .section-title { text-align: center; }
    .process-flowchart { gap: 0; }
    .flow-step { width: 100px; }
    .flow-connector span { width: 20px; }
}

@media (max-width: 768px) {
    .section { padding: 50px 0; }
    .section-title { font-size: 1.6rem; }
    .section-header { margin-bottom: 36px; }
    .nav-menu {
        position: fixed; top: 64px; left: 0; right: 0;
        background: rgba(255, 255, 255, 0.98); backdrop-filter: blur(20px);
        flex-direction: column; padding: 20px; gap: 14px;
        border-bottom: 1px solid var(--border); transform: translateY(-150%);
        transition: var(--transition); box-shadow: var(--shadow-md);
    }
    .nav-menu.active { transform: translateY(0); }
    .nav-cta { display: none; }
    .nav-toggle { display: flex; }
    .hero { padding-top: 80px; }
    .hero-title { font-size: 1.8rem; letter-spacing: -0.5px; line-height: 1.3; }
    .hero-title br { display: none; }
    .hero-subtitle { font-size: 0.95rem; }
    .hero-subtitle br { display: none; }
    .hero-actions { flex-direction: column; align-items: stretch; width: 100%; }
    .hero-actions .btn { width: 100%; justify-content: center; }
    .hero-stats { flex-wrap: wrap; justify-content: center; gap: 20px; }
    .stat-divider { display: none; }
    .stat-number { font-size: 1.6rem; }
    .hero-trust-row {
        display: grid; grid-template-columns: repeat(3, 1fr);
        gap: 10px; width: 100%; margin-bottom: 28px;
    }
    .trust-mini-card { padding: 14px 8px; min-width: 0; }
    .trust-mini-label { font-size: 0.82rem; }
    .trust-mini-icon { font-size: 1.5rem; }
    .cases-grid { grid-template-columns: 1fr; }
    .logo-wall { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .contact-form { padding: 28px 20px; }
    .back-to-top { bottom: 140px; right: 20px; }
    .floating-cta { bottom: 20px; right: 16px; gap: 10px; }
    .float-btn { width: 52px; height: 52px; }
    .float-icon { font-size: 1.2rem; }
    .process-flowchart {
        flex-direction: column; align-items: center; gap: 0;
    }
    .flow-connector { transform: rotate(90deg); height: 30px; }
    .flow-step { width: 200px; }
    .cta-bar { flex-direction: column; text-align: center; padding: 20px; }
    .cta-bar .btn { width: 100%; justify-content: center; }
    .pricing-note { flex-direction: column; gap: 12px; }
    .credentials-note { flex-direction: column; gap: 12px; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 1.5rem; line-height: 1.3; }
    .section-title { font-size: 1.35rem; }
    .footer-grid { grid-template-columns: 1fr; }
    .logo-wall { grid-template-columns: 1fr; }
    .trust-mini-card { padding: 12px 6px; }
    .trust-mini-label { font-size: 0.78rem; }
}