/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;line-height:1.6;color:#1a1a2e;background:#f7f8fa;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
button{cursor:pointer;border:none;background:none;font-family:inherit;font-size:inherit}
input,textarea,select{font-family:inherit;font-size:inherit;outline:none}
:root{
    --primary:#1677ff;
    --primary-dark:#0958d9;
    --primary-light:#e6f4ff;
    --success:#52c41a;
    --warning:#faad14;
    --danger:#ff4d4f;
    --text:#1a1a2e;
    --text-secondary:#555;
    --text-muted:#999;
    --bg:#f7f8fa;
    --bg-white:#fff;
    --border:#e8e8e8;
    --border-light:#f0f0f0;
    --radius:12px;
    --radius-sm:8px;
    --radius-lg:20px;
    --shadow:0 2px 8px rgba(0,0,0,.06);
    --shadow-md:0 4px 16px rgba(0,0,0,.08);
    --shadow-lg:0 8px 32px rgba(0,0,0,.12);
    --container:1200px;
}

/* ===== Container ===== */
.container{max-width:var(--container);margin:0 auto;padding:0 20px}

/* ===== Top Bar ===== */
.top-bar{background:linear-gradient(90deg,#1677ff,#0958d9);color:#fff;font-size:13px;padding:8px 0;text-align:center}
.top-bar-text{opacity:.95}

/* ===== Header ===== */
.header{position:sticky;top:0;z-index:100;background:#fff;box-shadow:0 1px 4px rgba(0,0,0,.06);transition:box-shadow .3s}
.header.scrolled{box-shadow:0 2px 12px rgba(0,0,0,.1)}
.nav-container{display:flex;align-items:center;justify-content:space-between;height:64px;gap:20px}
.logo{display:flex;align-items:center;gap:8px;font-weight:700;font-size:18px;color:#1a1a2e;white-space:nowrap}
.logo-text{background:linear-gradient(135deg,#1677ff,#0958d9);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.nav{display:flex;align-items:center;gap:4px;flex:1;justify-content:center}
.nav-link{padding:8px 14px;font-size:15px;color:#555;border-radius:var(--radius-sm);transition:all .2s;white-space:nowrap}
.nav-link:hover{color:var(--primary);background:var(--primary-light)}
.nav-link.active{color:var(--primary);font-weight:600}
.nav-cta{white-space:nowrap}
.nav-toggle{display:none;flex-direction:column;gap:4px;padding:8px}
.nav-toggle-bar{width:24px;height:2px;background:#333;border-radius:2px;transition:all .3s}
.nav-toggle.active .nav-toggle-bar:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.active .nav-toggle-bar:nth-child(2){opacity:0}
.nav-toggle.active .nav-toggle-bar:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 24px;border-radius:var(--radius-sm);font-size:15px;font-weight:600;transition:all .2s;white-space:nowrap;cursor:pointer}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 4px 12px rgba(22,119,255,.3)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{border:2px solid var(--primary);color:var(--primary);background:transparent}
.btn-outline:hover{background:var(--primary-light)}
.btn-lg{padding:14px 32px;font-size:17px}
.btn-sm{padding:8px 18px;font-size:14px}
.btn-block{width:100%}

/* ===== Hero ===== */
.hero{background:linear-gradient(135deg,#f0f5ff 0%,#e6f4ff 50%,#f0f5ff 100%);padding:48px 0 56px;overflow:hidden;position:relative}
.hero::before{content:"";position:absolute;top:-50%;right:-10%;width:600px;height:600px;background:radial-gradient(circle,rgba(22,119,255,.08) 0%,transparent 70%);pointer-events:none}
.hero-content{display:flex;align-items:center;gap:48px;position:relative}
.hero-text{flex:1}
.hero-badge{display:inline-block;background:#fff;border:1px solid var(--border);border-radius:100px;padding:6px 16px;font-size:13px;color:var(--primary);margin-bottom:16px;font-weight:500;box-shadow:var(--shadow)}
.hero-title{font-size:38px;font-weight:800;line-height:1.25;color:#1a1a2e;margin-bottom:16px;letter-spacing:-.5px}
.hero-title .accent{background:linear-gradient(135deg,#1677ff,#0958d9);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-desc{font-size:16px;color:var(--text-secondary);line-height:1.7;margin-bottom:24px;max-width:520px}
.hero-actions{display:flex;gap:12px;margin-bottom:28px}
.hero-trust{display:flex;gap:20px;flex-wrap:wrap}
.trust-item{display:flex;align-items:center;gap:6px;font-size:14px;color:var(--text-secondary)}
.trust-item svg{color:var(--success)}

/* Hero 3D Card */
.hero-visual{flex:0 0 360px;display:flex;justify-content:center}
.hero-card-3d{width:340px;height:210px;perspective:1000px}
.card-face{width:100%;height:100%;border-radius:16px;padding:24px;position:relative;overflow:hidden;background:linear-gradient(135deg,#1a1a2e 0%,#16213e 50%,#0f3460 100%);color:#fff;box-shadow:0 20px 60px rgba(0,0,0,.2);animation:cardFloat 4s ease-in-out infinite}
@keyframes cardFloat{0%,100%{transform:translateY(0) rotate(-2deg)}50%{transform:translateY(-10px) rotate(2deg)}}
.card-chip{width:40px;height:30px;border-radius:6px;background:linear-gradient(135deg,#ffd700,#b8860b);margin-bottom:16px;position:relative}
.card-chip::after{content:"";position:absolute;inset:4px;border:1px solid rgba(0,0,0,.2);border-radius:3px}
.card-brand{position:absolute;top:24px;right:24px;font-size:14px;font-weight:700;color:rgba(255,255,255,.8)}
.card-number{font-size:20px;letter-spacing:3px;margin-bottom:20px;font-family:"Courier New",monospace;opacity:.9}
.card-info{display:flex;gap:32px}
.card-label{display:block;font-size:11px;color:rgba(255,255,255,.5);margin-bottom:4px}
.card-value{font-size:22px;font-weight:700}

/* ===== Stats ===== */
.stats-section{background:#fff;padding:32px 0;border-bottom:1px solid var(--border-light)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-item{text-align:center}
.stat-num{font-size:32px;font-weight:800;color:var(--primary);line-height:1.2}
.stat-label{font-size:14px;color:var(--text-muted);margin-top:4px}

/* ===== Breadcrumb ===== */
.breadcrumb{padding:16px 0;font-size:13px;color:var(--text-muted)}
.breadcrumb ol{display:flex;align-items:center;gap:8px}
.breadcrumb a{color:var(--text-secondary)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .active{color:var(--text-muted)}
.breadcrumb li:not(:last-child)::after{content:"/";margin-left:8px;color:var(--border)}

/* ===== Section Headers ===== */
.section-header{text-align:center;margin-bottom:40px}
.section-title{font-size:28px;font-weight:700;color:#1a1a2e;margin-bottom:8px}
.section-subtitle{font-size:15px;color:var(--text-muted)}

/* ===== Filter Tabs ===== */
.filter-tabs{display:flex;justify-content:center;gap:8px;margin-bottom:32px}
.filter-tab{padding:8px 20px;border-radius:100px;font-size:14px;font-weight:500;color:var(--text-secondary);background:#fff;border:1px solid var(--border);transition:all .2s}
.filter-tab.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.filter-tab:hover:not(.active){border-color:var(--primary);color:var(--primary)}

/* ===== Cards Grid ===== */
.cards-section{padding:64px 0}
.cards-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:#fff;border-radius:var(--radius);padding:28px;border:1px solid var(--border-light);transition:all .3s;position:relative;display:flex;flex-direction:column}
.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px);border-color:var(--primary)}
.card-featured{border-color:var(--primary);box-shadow:0 4px 20px rgba(22,119,255,.1)}
.card-tag{position:absolute;top:-12px;left:24px;background:linear-gradient(135deg,#ff4d4f,#ff7875);color:#fff;font-size:12px;font-weight:600;padding:4px 12px;border-radius:100px;white-space:nowrap}
.card-tag-blue{background:linear-gradient(135deg,#1677ff,#4096ff)}
.card-tag-orange{background:linear-gradient(135deg,#fa8c16,#ffa940)}
.card-tag-green{background:linear-gradient(135deg,#52c41a,#73d13d)}
.card-operator{margin-bottom:12px;margin-top:8px}
.operator-badge{display:inline-block;font-size:12px;font-weight:600;padding:3px 10px;border-radius:4px}
.operator-dianxin{background:#fff0f6;color:#c41d7f}
.operator-yidong{background:#f6ffed;color:#389e0d}
.operator-liantong{background:#f0f5ff;color:#0958d9}
.card-name{font-size:20px;font-weight:700;color:#1a1a2e;margin-bottom:16px}
.card-price{display:flex;align-items:baseline;gap:2px;margin-bottom:20px}
.price-symbol{font-size:18px;color:var(--primary);font-weight:600}
.price-num{font-size:40px;font-weight:800;color:var(--primary);line-height:1}
.price-unit{font-size:15px;color:var(--text-muted)}
.card-features{flex:1;margin-bottom:20px}
.card-features li{padding:6px 0;font-size:14px;color:var(--text-secondary);position:relative;padding-left:24px}
.card-features li::before{content:"";position:absolute;left:0;top:11px;width:16px;height:16px;border-radius:50%;background:var(--primary-light)}
.card-features li::after{content:"";position:absolute;left:5px;top:15px;width:6px;height:3px;border-left:2px solid var(--primary);border-bottom:2px solid var(--primary);transform:rotate(-45deg)}
.card-features strong{color:#1a1a2e;font-weight:600}
.card-rating{display:flex;align-items:center;gap:8px;margin-bottom:16px}
.stars{color:#faad14;font-size:14px;letter-spacing:1px}
.rating-text{font-size:13px;color:var(--text-muted)}
.card-btn{width:100%;margin-bottom:8px}
.card-note{text-align:center;font-size:13px;color:var(--success);font-weight:500}

/* ===== Advantages ===== */
.advantages-section{padding:64px 0;background:#fff}
.advantages-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.advantage-item{text-align:center}
.adv-icon{width:72px;height:72px;margin:0 auto 16px;border-radius:50%;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center}
.advantage-item h3{font-size:18px;font-weight:600;margin-bottom:8px;color:#1a1a2e}
.advantage-item p{font-size:14px;color:var(--text-secondary);line-height:1.7}

/* ===== Process ===== */
.process-section{padding:64px 0;background:linear-gradient(180deg,#f7f8fa 0%,#fff 100%)}
.process-timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.process-timeline::before{content:"";position:absolute;top:24px;left:12.5%;right:12.5%;height:2px;background:linear-gradient(90deg,var(--primary) 0%,var(--primary-light) 100%);z-index:0}
.process-step{text-align:center;position:relative;z-index:1}
.step-num{width:48px;height:48px;margin:0 auto 16px;border-radius:50%;background:var(--primary);color:#fff;font-size:20px;font-weight:700;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px rgba(22,119,255,.3);border:4px solid #fff}
.step-content h3{font-size:17px;font-weight:600;margin-bottom:8px;color:#1a1a2e}
.step-content p{font-size:14px;color:var(--text-secondary);line-height:1.6;padding:0 8px}

/* ===== SEO Content ===== */
.seo-content-section{padding:64px 0;background:#fff}
.seo-content-section .container{max-width:800px}
.seo-content-section h2{font-size:26px;font-weight:700;margin-bottom:20px;color:#1a1a2e}
.seo-content-section h3{font-size:20px;font-weight:600;margin:24px 0 12px;color:#1a1a2e}
.seo-content-section p{font-size:15px;color:var(--text-secondary);line-height:1.8;margin-bottom:12px}
.seo-content-section strong{color:#1a1a2e;font-weight:600}

/* ===== FAQ ===== */
.faq-section{padding:64px 0;background:#f7f8fa}
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:var(--radius);margin-bottom:12px;overflow:hidden;border:1px solid var(--border-light);transition:box-shadow .2s}
.faq-item[open]{box-shadow:var(--shadow)}
.faq-q{padding:18px 24px;font-size:16px;font-weight:600;color:#1a1a2e;cursor:pointer;display:flex;justify-content:space-between;align-items:center;list-style:none}
.faq-q::-webkit-details-marker{display:none}
.faq-q::after{content:"+";font-size:22px;color:var(--primary);font-weight:300;transition:transform .2s}
.faq-item[open] .faq-q::after{transform:rotate(45deg)}
.faq-a{padding:0 24px 18px;font-size:15px;color:var(--text-secondary);line-height:1.7}

/* ===== Apply Form ===== */
.apply-section{padding:64px 0;background:linear-gradient(135deg,#1677ff 0%,#0958d9 100%);color:#fff}
.apply-wrapper{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.apply-info .section-title{color:#fff;text-align:left}
.apply-info .section-subtitle{color:rgba(255,255,255,.8);text-align:left}
.apply-benefits{margin-top:24px}
.apply-benefits li{padding:6px 0;font-size:15px;color:rgba(255,255,255,.9);position:relative;padding-left:28px}
.apply-benefits li::before{content:"";position:absolute;left:0;top:10px;width:18px;height:18px;border-radius:50%;background:rgba(255,255,255,.2)}
.apply-benefits li::after{content:"";position:absolute;left:6px;top:14px;width:6px;height:3px;border-left:2px solid #fff;border-bottom:2px solid #fff;transform:rotate(-45deg)}
.apply-form{background:#fff;border-radius:var(--radius-lg);padding:32px;color:#1a1a2e;box-shadow:0 20px 60px rgba(0,0,0,.2)}
.form-group{margin-bottom:20px}
.form-label{display:block;font-size:14px;font-weight:600;color:#1a1a2e;margin-bottom:6px}
.required{color:var(--danger)}
.form-input{width:100%;padding:12px 16px;border:2px solid var(--border);border-radius:var(--radius-sm);font-size:15px;color:#1a1a2e;transition:border-color .2s;background:#fff}
.form-input:focus{border-color:var(--primary)}
.form-input::placeholder{color:var(--text-muted)}
.form-textarea{resize:vertical;min-height:80px}
.form-select{cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23999' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center;padding-right:40px}
.form-check{display:flex;align-items:flex-start;gap:8px;margin-bottom:20px;font-size:14px;color:var(--text-secondary)}
.form-check input{margin-top:2px}
.form-check a{color:var(--primary)}
.form-note{text-align:center;font-size:13px;color:var(--text-muted);margin-top:12px}

/* ===== News ===== */
.news-section{padding:64px 0;background:#fff}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-item{border:1px solid var(--border-light);border-radius:var(--radius);padding:24px;transition:all .2s}
.news-item:hover{box-shadow:var(--shadow-md);border-color:var(--primary)}
.news-date{font-size:13px;color:var(--text-muted);margin-bottom:8px}
.news-title{font-size:17px;font-weight:600;margin-bottom:8px}
.news-title a{color:#1a1a2e}
.news-title a:hover{color:var(--primary)}
.news-excerpt{font-size:14px;color:var(--text-secondary);line-height:1.6}

/* ===== Footer ===== */
.footer{background:#1a1a2e;color:#aaa;padding:48px 0 24px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
.footer-brand-col .footer-logo{font-size:20px;font-weight:700;color:#fff;margin-bottom:12px}
.footer-desc{font-size:14px;line-height:1.7;color:#888}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-links li{margin-bottom:8px}
.footer-links a{font-size:14px;color:#888;transition:color .2s}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{text-align:center;padding-top:24px;border-top:1px solid #2a2a3e;font-size:13px;color:#666}
.footer-icp{margin-top:4px}
.footer-icp a{color:#666}
.footer-disclaimer{margin-top:8px;font-size:12px;color:#555;max-width:800px;margin-left:auto;margin-right:auto}

/* ===== Back to Top ===== */
.back-to-top{position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 16px rgba(22,119,255,.3);opacity:0;visibility:hidden;transition:all .3s;z-index:99}
.back-to-top.visible{opacity:1;visibility:visible}
.back-to-top:hover{background:var(--primary-dark);transform:translateY(-2px)}

/* ===== Responsive ===== */
@media(max-width:1024px){
    .nav{gap:0}
    .nav-link{padding:8px 10px;font-size:14px}
    .hero-visual{display:none}
    .hero-content{gap:0}
    .cards-grid{grid-template-columns:repeat(2,1fr)}
    .advantages-grid{grid-template-columns:repeat(2,1fr)}
    .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
    .container{padding:0 16px}
    .nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:16px;box-shadow:var(--shadow-md);gap:0}
    .nav.open{display:flex}
    .nav-link{padding:12px 16px;width:100%;text-align:left;border-radius:0}
    .nav-toggle{display:flex}
    .nav-cta{display:none}
    .hero{padding:32px 0}
    .hero-title{font-size:26px}
    .hero-desc{font-size:14px}
    .hero-actions{flex-direction:column}
    .hero-actions .btn{width:100%}
    .hero-trust{gap:12px}
    .trust-item{font-size:13px}
    .stats-grid{grid-template-columns:repeat(2,1fr);gap:16px}
    .stat-num{font-size:24px}
    .cards-grid{grid-template-columns:1fr}
    .advantages-grid{grid-template-columns:1fr}
    .process-timeline{grid-template-columns:1fr 1fr;gap:32px}
    .process-timeline::before{display:none}
    .apply-wrapper{grid-template-columns:1fr;gap:24px}
    .news-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr;gap:24px}
    .section-title{font-size:22px}
    .filter-tabs{flex-wrap:wrap}
    .filter-tab{padding:6px 14px;font-size:13px}
}
@media(max-width:480px){
    .hero-title{font-size:22px}
    .hero-badge{font-size:12px}
    .stats-grid{grid-template-columns:1fr 1fr;gap:12px}
    .process-timeline{grid-template-columns:1fr}
    .apply-form{padding:20px}
}

/* ===== Province Network (added 2026-08) ===== */
.province-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(92px,1fr));gap:10px;margin-top:20px}
.province-grid a{display:block;padding:12px 8px;text-align:center;background:#fff;border:1px solid #e8eaf0;border-radius:10px;font-size:14px;color:#333;transition:all .2s;text-decoration:none}
.province-grid a:hover{background:var(--primary);color:#fff;border-color:var(--primary);transform:translateY(-2px)}
.footer-provinces{border-top:1px solid #2a2a3e;padding-top:20px;margin-top:8px}
.footer-provinces-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:12px}
.footer-prov-links{display:flex;flex-wrap:wrap;gap:8px 14px}
.footer-prov-links a{font-size:13px;color:#888;text-decoration:none;transition:color .2s}
.footer-prov-links a:hover,.footer-prov-links a.current{color:var(--primary)}
.footer-prov-links a.current{font-weight:600}