/* === 专题页共享样式 === */
:root{
  --primary:#2E5C8A;--primary-dark:#1e4060;--primary-light:#3a7ab5;
  --accent:#1a8a5f;--accent-light:#25b07a;
  --dark:#1a1a2e;--gray:#f5f7fa;--gray-2:#e8edf2;
  --text:#333;--text-light:#666;--border:#dde4ec;
  --radius:12px;--shadow:0 4px 24px rgba(46,92,138,.08);
  --shadow-lg:0 8px 40px rgba(46,92,138,.12);
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;color:var(--text);line-height:1.7;background:#fff;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* Header */
.header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);box-shadow:0 2px 12px rgba(0,0,0,.04)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--primary)}
.logo-badge{width:38px;height:38px;background:linear-gradient(135deg,var(--primary),var(--primary-light));border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;font-weight:700}
.header-phone{display:flex;align-items:center;gap:8px;font-weight:700;font-size:18px;color:var(--primary)}
.header-phone .phone-icon{width:20px;height:20px;fill:var(--primary)}
.header-cta{display:flex;align-items:center;gap:16px}
.btn-phone{display:flex;align-items:center;gap:6px;background:var(--primary);color:#fff;padding:8px 18px;border-radius:8px;font-weight:600;font-size:14px;transition:.2s}
.btn-phone:hover{background:var(--primary-dark)}
@media(max-width:768px){.header-phone span{display:none}.logo span{font-size:15px}}

/* Hero */
.hero{position:relative;background:linear-gradient(135deg,#1a3a5c 0%,#2E5C8A 50%,#3a7ab5 100%);color:#fff;padding:80px 0 100px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,#1a3a5c 0%,#2E5C8A 50%,#3a7ab5 100%);opacity:.95}
.hero-inner{position:relative;z-index:2;display:flex;align-items:center;gap:60px;flex-wrap:wrap}
.hero-text{flex:1;min-width:300px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.3);padding:6px 16px;border-radius:30px;font-size:14px;margin-bottom:20px}
.hero-badge .dot{width:8px;height:8px;background:var(--accent-light);border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.hero h1{font-size:42px;line-height:1.3;margin-bottom:16px;font-weight:800}
.hero h1 .highlight{color:#7dd3a8}
.hero-sub{font-size:18px;color:rgba(255,255,255,.85);margin-bottom:28px;line-height:1.8}
.hero-trust{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px}
.hero-trust span{display:flex;align-items:center;gap:6px;background:rgba(255,255,255,.1);padding:8px 14px;border-radius:8px;font-size:14px}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}
.btn-primary{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#fff;padding:14px 32px;border-radius:10px;font-size:17px;font-weight:700;transition:.2s;box-shadow:0 4px 20px rgba(26,138,95,.3);cursor:pointer;border:none}
.btn-primary:hover{background:var(--accent-light);transform:translateY(-2px);box-shadow:0 6px 28px rgba(26,138,95,.4)}
.btn-outline{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.1);border:2px solid rgba(255,255,255,.4);color:#fff;padding:12px 30px;border-radius:10px;font-size:16px;font-weight:600;transition:.2s}
.btn-outline:hover{background:rgba(255,255,255,.2);border-color:#fff}
.hero-visual{flex:0 0 420px;text-align:center}
.hero-visual img{border-radius:16px;box-shadow:0 16px 48px rgba(0,0,0,.3)}
.hero-card{background:rgba(255,255,255,.12);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2);border-radius:16px;padding:24px;margin-top:20px;max-width:420px}
.hero-card-title{font-size:15px;color:rgba(255,255,255,.9);margin-bottom:12px;font-weight:600}
.hero-card-form{display:flex;flex-direction:column;gap:10px}
.hero-card-form input{padding:12px 16px;border:none;border-radius:8px;font-size:14px;background:rgba(255,255,255,.95);color:var(--text)}
.hero-card-form button{padding:12px;border:none;border-radius:8px;background:var(--accent);color:#fff;font-size:15px;font-weight:700;cursor:pointer;transition:.2s}
.hero-card-form button:hover{background:var(--accent-light)}
@media(max-width:768px){.hero{padding:48px 0 80px}.hero h1{font-size:30px}.hero-visual{display:none}}

/* Section */
.section{padding:80px 0}
.section-gray{background:var(--gray)}
.section-title{text-align:center;margin-bottom:16px}
.section-title h2{font-size:32px;font-weight:800;color:var(--dark)}
.section-title h2 span{color:var(--primary)}
.section-subtitle{text-align:center;color:var(--text-light);font-size:16px;margin-bottom:48px;max-width:700px;margin-left:auto;margin-right:auto}

/* Services */
.services-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.service-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:32px 24px;text-align:center;transition:.3s;box-shadow:var(--shadow)}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--primary-light)}
.service-icon{width:64px;height:64px;margin:0 auto 20px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:28px}
.service-card h3{font-size:18px;font-weight:700;margin-bottom:10px;color:var(--dark)}
.service-card p{font-size:14px;color:var(--text-light);line-height:1.7}
@media(max-width:768px){.services-grid{grid-template-columns:1fr 1fr;gap:16px}.service-card{padding:20px 16px}}
@media(max-width:480px){.services-grid{grid-template-columns:1fr}}

/* Cases */
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.case-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.3s;border:1px solid var(--border)}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.case-img{height:200px;overflow:hidden;position:relative}
.case-img img{width:100%;height:100%;object-fit:cover;transition:.5s}
.case-card:hover .case-img img{transform:scale(1.06)}
.case-tag{position:absolute;top:12px;left:12px;background:var(--primary);color:#fff;padding:4px 12px;border-radius:6px;font-size:12px;font-weight:600}
.case-body{padding:24px}
.case-body h3{font-size:17px;font-weight:700;margin-bottom:12px;color:var(--dark)}
.case-stats{display:flex;gap:20px;margin-bottom:12px;padding-bottom:12px;border-bottom:1px solid var(--border)}
.case-stat .num{font-size:24px;font-weight:800;color:var(--primary)}
.case-stat .label{font-size:12px;color:var(--text-light)}
.case-body p{font-size:14px;color:var(--text-light);line-height:1.6}
@media(max-width:768px){.cases-grid{grid-template-columns:1fr}}

/* Pricing */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:960px;margin:0 auto}
.price-card{background:#fff;border-radius:var(--radius);padding:36px 28px;text-align:center;border:2px solid var(--border);transition:.3s;position:relative}
.price-card.popular{border-color:var(--primary);box-shadow:var(--shadow-lg)}
.price-card.popular::before{content:"热门选择";position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--primary);color:#fff;padding:4px 16px;border-radius:20px;font-size:13px;font-weight:600;white-space:nowrap}
.price-card:hover{transform:translateY(-4px)}
.price-card h3{font-size:20px;font-weight:700;margin-bottom:8px;color:var(--dark)}
.price-card .desc{font-size:14px;color:var(--text-light);margin-bottom:20px}
.price-amount{font-size:36px;font-weight:800;color:var(--primary);margin-bottom:4px}
.price-amount .unit{font-size:16px;font-weight:600}
.price-note{font-size:13px;color:var(--text-light);margin-bottom:24px}
.price-features{list-style:none;text-align:left;margin-bottom:28px}
.price-features li{padding:8px 0;font-size:14px;color:var(--text);display:flex;align-items:center;gap:8px}
.price-features li::before{content:"\2713";color:var(--accent);font-weight:700;font-size:16px}
.price-card .btn-primary{width:100%;justify-content:center;padding:12px}
.free-box{max-width:680px;margin:40px auto 0;background:linear-gradient(135deg,#e8f8ef,#f0fdf4);border:1px solid var(--accent-light);border-radius:var(--radius);padding:32px;text-align:center}
.free-box h3{font-size:22px;font-weight:800;color:var(--accent);margin-bottom:8px}
.free-box p{font-size:15px;color:var(--text-light);margin-bottom:16px}
@media(max-width:768px){.pricing-grid{grid-template-columns:1fr}}

/* Trust */
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:40px}
.trust-item{text-align:center;padding:24px;background:#fff;border-radius:var(--radius);border:1px solid var(--border)}
.trust-num{font-size:36px;font-weight:800;color:var(--primary);margin-bottom:4px}
.trust-label{font-size:14px;color:var(--text-light)}
.trust-badges{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}
.trust-badge{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--border);border-radius:30px;padding:8px 18px;font-size:14px;font-weight:600;color:var(--text)}
.trust-badge .icon{width:18px;height:18px;fill:var(--accent)}
@media(max-width:768px){.trust-grid{grid-template-columns:1fr 1fr}}

/* Contact */
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.contact-info h3{font-size:24px;font-weight:800;margin-bottom:20px;color:var(--dark)}
.contact-channels{display:flex;flex-direction:column;gap:16px;margin-bottom:32px}
.contact-channel{display:flex;align-items:center;gap:16px;padding:16px 20px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);transition:.2s}
.contact-channel:hover{border-color:var(--primary-light);box-shadow:var(--shadow)}
.channel-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.channel-icon.phone{background:#e8f0fe}
.channel-icon.phone svg{fill:var(--primary)}
.channel-icon.wechat{background:#e8f8ef}
.channel-icon.wechat svg{fill:var(--accent)}
.channel-icon.form{background:#fff4e6}
.channel-icon.form svg{fill:#e8870e}
.channel-text .label{font-size:13px;color:var(--text-light)}
.channel-text .value{font-size:18px;font-weight:700;color:var(--dark)}
.channel-text .value a{color:var(--primary)}
.contact-form{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:36px;box-shadow:var(--shadow-lg)}
.contact-form h3{font-size:22px;font-weight:800;margin-bottom:8px;color:var(--dark)}
.contact-form .sub{font-size:14px;color:var(--text-light);margin-bottom:24px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:14px;font-weight:600;margin-bottom:6px;color:var(--text)}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px 16px;border:2px solid var(--border);border-radius:8px;font-size:15px;font-family:inherit;transition:.2s}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--primary-light)}
.form-group textarea{resize:vertical;min-height:80px}
.contact-form .btn-primary{width:100%;justify-content:center;margin-top:8px}
.form-note{font-size:12px;color:var(--text-light);text-align:center;margin-top:12px}
@media(max-width:768px){.contact-wrap{grid-template-columns:1fr}}

/* FAQ */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);margin-bottom:12px;overflow:hidden;transition:.2s}
.faq-item:hover{border-color:var(--primary-light)}
.faq-q{padding:20px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:16px;color:var(--dark);user-select:none}
.faq-q .arrow{width:20px;height:20px;transition:.3s;flex-shrink:0;fill:var(--primary)}
.faq-item.open .arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 24px}
.faq-item.open .faq-a{max-height:300px;padding:0 24px 20px}
.faq-a p{font-size:15px;color:var(--text-light);line-height:1.8}

/* Footer */
.footer{background:var(--dark);color:rgba(255,255,255,.7);padding:48px 0 24px}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;margin-bottom:32px}
.footer-brand .logo{color:#fff;margin-bottom:12px}
.footer-brand p{font-size:14px;line-height:1.8;margin-bottom:16px}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:12px}
.footer-col a{display:block;font-size:14px;padding:4px 0;transition:.2s}
.footer-col a:hover{color:#7dd3a8}
.footer-contact{font-size:14px;line-height:2}
.footer-contact .phone{color:#7dd3a8;font-size:20px;font-weight:700}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;text-align:center;font-size:13px;color:rgba(255,255,255,.5)}
@media(max-width:768px){.footer-top{grid-template-columns:1fr;gap:24px}}

/* Floating CTA */
.floating-cta{position:fixed;bottom:24px;right:24px;z-index:99;display:flex;flex-direction:column;gap:12px}
.floating-cta a{width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 20px rgba(0,0,0,.15);transition:.2s}
.floating-cta a:hover{transform:scale(1.1)}
.floating-cta .fta-phone{background:var(--primary)}
.floating-cta .fta-wechat{background:var(--accent)}
.floating-cta .fta-top{background:#fff;border:1px solid var(--border)}
.floating-cta svg{width:24px;height:24px;fill:#fff}
.floating-cta .fta-top svg{fill:var(--text)}
@media(max-width:480px){.floating-cta{bottom:16px;right:16px}.floating-cta a{width:48px;height:48px}}

/* Animations */
.fade-up{opacity:0;transform:translateY(30px);transition:.6s}
.fade-up.visible{opacity:1;transform:translateY(0)}

/* Feature list (for scenario pages) */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:48px}
.feature-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:28px 24px;transition:.3s}
.feature-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--primary-light)}
.feature-item .icon{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,#e8f0fe,#d6e4fa);display:flex;align-items:center;justify-content:center;margin-bottom:16px;font-size:24px}
.feature-item h3{font-size:17px;font-weight:700;margin-bottom:8px;color:var(--dark)}
.feature-item p{font-size:14px;color:var(--text-light);line-height:1.6}
@media(max-width:768px){.feature-grid{grid-template-columns:1fr}}

/* Process steps */
.process-steps{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:20px}
.process-step{flex:1;min-width:180px;text-align:center;position:relative}
.process-step .step-num{width:48px;height:48px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;margin:0 auto 12px}
.process-step h4{font-size:15px;font-weight:700;margin-bottom:6px;color:var(--dark)}
.process-step p{font-size:13px;color:var(--text-light)}
@media(max-width:768px){.process-steps{flex-direction:column}}

/* Comparison table */
.compare-table{width:100%;border-collapse:collapse;margin-bottom:20px}
.compare-table th{background:var(--primary);color:#fff;padding:14px 16px;font-size:15px;font-weight:600;text-align:left}
.compare-table td{padding:14px 16px;border-bottom:1px solid var(--border);font-size:14px}
.compare-table tr:nth-child(even){background:var(--gray)}
.compare-table .yes{color:var(--accent);font-weight:700}
.compare-table .no{color:#e74c3c;font-weight:700}