*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--primary:#2b7cff;--primary-dark:#1a5fd4;--accent:#00c6ff;--bg:#f5f8fc;--card:#fff;--text:#1a1a2e;--text-muted:#5a6278;--border:#e4eaf3;--gradient:linear-gradient(135deg,#2b7cff 0%,#00c6ff 100%);--shadow:0 4px 24px rgba(43,124,255,.12);--radius:12px;--max:1200px;--header-h:72px}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none;transition:color .2s}
a:hover{color:var(--primary-dark)}
img{max-width:100%;height:auto;display:block}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}
.site-header{background:var(--card);box-shadow:0 2px 12px rgba(0,0,0,.06);position:sticky;top:0;z-index:100}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;max-width:var(--max);margin:0 auto}
.logo-wrap{display:flex;align-items:center;gap:12px}
.logo-wrap img{width:44px;height:44px;border-radius:10px}
.logo-text{font-size:1.25rem;font-weight:700;color:var(--text)}
.logo-text span{color:var(--primary)}
.nav-desktop{display:flex;gap:28px;list-style:none}
.nav-desktop a{color:var(--text);font-weight:500;font-size:.95rem}
.nav-desktop a:hover,.nav-desktop a.active{color:var(--primary)}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--text);margin:6px 0;transition:.3s}
.nav-mobile{display:none;position:fixed;top:var(--header-h);left:0;right:0;background:var(--card);box-shadow:var(--shadow);padding:16px 0;z-index:99}
.nav-mobile.open{display:block}
.nav-mobile a{display:block;padding:12px 24px;color:var(--text);font-weight:500;border-bottom:1px solid var(--border)}
.nav-mobile a:hover{background:var(--bg);color:var(--primary)}
.hero{background:var(--gradient);color:#fff;padding:60px 0 80px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;bottom:-2px;left:0;right:0;height:60px;background:var(--bg);border-radius:50% 50% 0 0 / 100% 100% 0 0}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;position:relative;z-index:1}
.hero h1{font-size:2.2rem;line-height:1.35;margin-bottom:16px;font-weight:800}
.hero-desc{font-size:1.05rem;opacity:.92;margin-bottom:28px;line-height:1.8}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:50px;font-weight:600;font-size:1rem;border:none;cursor:pointer;transition:transform .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:#fff;color:var(--primary);box-shadow:0 4px 16px rgba(0,0,0,.15)}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.7)}
.btn-outline:hover{background:rgba(255,255,255,.15)}
.hero-phone{max-width:320px;margin:0 auto;border-radius:24px;box-shadow:0 20px 60px rgba(0,0,0,.25);overflow:hidden}
.section{padding:64px 0}
.section-title{text-align:center;margin-bottom:48px}
.section-title h2{font-size:1.75rem;margin-bottom:12px;color:var(--text)}
.section-title p{color:var(--text-muted);max-width:640px;margin:0 auto}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{background:var(--card);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);transition:transform .3s}
.feature-card:hover{transform:translateY(-4px)}
.feature-icon{width:56px;height:56px;background:var(--gradient);border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:16px;color:#fff}
.feature-card h3{font-size:1.1rem;margin-bottom:8px}
.feature-card p{color:var(--text-muted);font-size:.92rem}
.content-block{margin-bottom:48px}
.content-block h2{font-size:1.5rem;margin-bottom:16px;padding-bottom:10px;border-bottom:3px solid var(--primary);display:inline-block}
.content-block h3{font-size:1.15rem;margin:24px 0 12px;color:var(--primary-dark)}
.content-block p{margin-bottom:14px;color:var(--text-muted);text-align:justify}
.content-block ul,.content-block ol{margin:12px 0 16px 24px;color:var(--text-muted)}
.content-block li{margin-bottom:8px}
.img-showcase{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin:32px 0}
.img-card{background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.img-card img{width:100%;aspect-ratio:9/16;object-fit:cover;object-position:top}
.img-card figcaption{padding:14px 16px;font-size:.88rem;color:var(--text-muted);border-top:1px solid var(--border)}
.img-card figcaption strong{display:block;color:var(--text);margin-bottom:4px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin:32px 0}
.step-item{text-align:center;background:var(--card);padding:24px 16px;border-radius:var(--radius);box-shadow:var(--shadow);position:relative}
.step-num{width:40px;height:40px;background:var(--gradient);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;margin:0 auto 12px;font-size:1.1rem}
.step-item h4{font-size:.95rem;margin-bottom:6px}
.step-item p{font-size:.85rem;color:var(--text-muted)}
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--card);border-radius:var(--radius);margin-bottom:12px;box-shadow:var(--shadow);overflow:hidden}
.faq-q{padding:18px 24px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
.faq-q::after{content:"+";font-size:1.3rem;color:var(--primary);transition:transform .3s}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:max-height .3s,padding .3s;color:var(--text-muted);font-size:.92rem}
.faq-item.open .faq-a{padding:0 24px 18px;max-height:300px}
.cta-section{background:var(--gradient);color:#fff;text-align:center;padding:64px 20px;border-radius:var(--radius);margin:48px 0}
.cta-section h2{font-size:1.6rem;margin-bottom:12px}
.cta-section p{opacity:.9;margin-bottom:24px}
.site-footer{background:#1a1a2e;color:rgba(255,255,255,.75);padding:48px 0 24px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
.footer-brand img{width:48px;border-radius:10px;margin-bottom:12px}
.footer-brand p{font-size:.88rem;line-height:1.7}
.footer-col h4{color:#fff;margin-bottom:14px;font-size:.95rem}
.footer-col a{display:block;color:rgba(255,255,255,.65);font-size:.88rem;margin-bottom:8px}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;text-align:center;font-size:.82rem}
.breadcrumb{padding:16px 0;font-size:.88rem;color:var(--text-muted)}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--primary)}
.page-hero{background:var(--card);padding:40px 0;border-bottom:1px solid var(--border)}
.page-hero h1{font-size:1.8rem;margin-bottom:8px}
.page-hero p{color:var(--text-muted)}
.legal-content{background:var(--card);border-radius:var(--radius);padding:40px;box-shadow:var(--shadow);margin:32px 0}
.legal-content h2{font-size:1.25rem;margin:28px 0 12px;color:var(--text)}
.legal-content h2:first-child{margin-top:0}
.legal-content p,.legal-content li{color:var(--text-muted);margin-bottom:10px;font-size:.93rem}
.legal-content ul,.legal-content ol{margin:10px 0 16px 24px}
.error-page{min-height:70vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:40px 20px}
.error-page h1{font-size:5rem;font-weight:800;color:var(--primary);line-height:1}
.error-page h2{font-size:1.5rem;margin:16px 0 12px}
.error-page p{color:var(--text-muted);margin-bottom:24px}
.internal-links{background:var(--card);border-radius:var(--radius);padding:24px;margin:32px 0;box-shadow:var(--shadow)}
.internal-links h3{font-size:1rem;margin-bottom:12px}
.internal-links a{display:inline-block;margin:4px 12px 4px 0;font-size:.9rem}
@media(max-width:992px){
.hero-grid{grid-template-columns:1fr;text-align:center}
.hero-phone{max-width:260px}
.hero-btns{justify-content:center}
.features-grid{grid-template-columns:repeat(2,1fr)}
.steps{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
.nav-desktop{display:none}
.nav-toggle{display:block}
.hero{padding:40px 0 60px}
.hero h1{font-size:1.6rem}
.features-grid,.img-showcase{grid-template-columns:1fr}
.steps{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr}
.legal-content{padding:24px}
}