:root{--brand:#1b3f8e;--brand-600:#163674;--brand-50:#eef3fb;--brand-100:#e3ecf8;--page-bg:#f4f6fb;--section-alt-bg:#eef1f6;--surface:#fff;--border:#e6eaf1;--border-soft:#eef1f6;--divider:#f1f4f9;--text-1:#1a2233;--text-2:#3a4357;--text-3:#6b7589;--text-4:#9aa3b5;--shadow-sm:0 1px 2px rgba(23,43,92,0.04),0 1px 3px rgba(23,43,92,0.05);--shadow-md:0 4px 14px rgba(23,43,92,0.06),0 2px 6px rgba(23,43,92,0.04);--shadow-lg:0 12px 32px rgba(23,43,92,0.12),0 4px 10px rgba(23,43,92,0.06);}*{margin:0;padding:0;box-sizing:border-box;}body{font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI","Helvetica Neue",Arial,sans-serif;color:var(--text-2);background:var(--page-bg);line-height:1.75;font-size:15px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-feature-settings:"tnum" 0;}a{text-decoration:none;color:inherit;transition:color .2s ease;}.num,.price,.unit,td,th,canvas{font-variant-numeric:tabular-nums;}.hero{background:linear-gradient(135deg,var(--brand) 0,#2a56b5 100%);padding:92px 0 88px;text-align:center;position:relative;overflow:hidden;}.hero::after{content:'';position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:50%;background:rgba(255,255,255,0.06);}.hero::before{content:'';position:absolute;left:-80px;bottom:-100px;width:260px;height:260px;border-radius:50%;background:rgba(255,255,255,0.05);}.hero .container{position:relative;z-index:1;}.hero h1{font-size:46px;color:#fff;font-weight:700;margin-bottom:24px;letter-spacing:3px;line-height:1.3;}.hero p{font-size:17px;color:rgba(255,255,255,0.88);max-width:720px;margin:0 auto;line-height:1.9;font-weight:350;}.section{padding:56px 0;}.section-alt{background:var(--section-alt-bg);}.section-header{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:36px;}.section-title{font-size:26px;font-weight:650;color:var(--text-1);display:flex;align-items:center;gap:14px;letter-spacing:.5px;}.section-title::before{content:'';display:inline-block;width:4px;height:28px;background:var(--brand);border-radius:2px;}.section-subtitle{font-size:14px;color:var(--text-4);margin-top:8px;font-weight:350;}.section-more{color:var(--brand);font-size:14px;font-weight:500;cursor:pointer;transition:opacity .2s ease;}.section-more:hover{opacity:.7;}.region-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;}.region-card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:26px;cursor:pointer;transition:box-shadow .25s ease,border-color .25s ease,transform .25s ease;box-shadow:var(--shadow-sm);}.region-card:hover{box-shadow:var(--shadow-lg);border-color:var(--brand-100);transform:translateY(-3px);}.region-card .city{font-size:21px;font-weight:650;color:var(--brand);margin-bottom:20px;letter-spacing:.5px;}.region-card .info{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-4);}.region-card .arrow{font-size:18px;color:var(--brand);transition:transform .25s ease;}.region-card:hover .arrow{transform:translateX(4px);}.updates-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}.update-table{width:100%;background:var(--surface);border-radius:12px;overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow-sm);}.update-table table{width:100%;border-collapse:collapse;}.update-table th{background:var(--brand-50);padding:13px 22px;text-align:left;font-size:13px;color:var(--text-3);font-weight:600;letter-spacing:.3px;border-bottom:1px solid var(--border-soft);}.update-table td{padding:14px 22px;font-size:14px;color:var(--text-2);border-bottom:1px solid var(--divider);}.update-table tbody tr{transition:background .15s ease;}.update-table tbody tr:nth-child(even) td{background:#fafbfd;}.update-table tbody tr:hover td{background:var(--brand-50);}.update-table tr:last-child td{border-bottom:none;}.update-table .link{color:var(--brand);cursor:pointer;transition:opacity .2s ease;font-weight:500;}.update-table .link:hover{opacity:.7;}.trend-content{display:grid;grid-template-columns:1fr 340px;gap:24px;}.trend-chart-box{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:28px;box-shadow:var(--shadow-sm);}.trend-chart-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;flex-wrap:wrap;gap:12px;}.trend-chart-title{font-size:16px;font-weight:600;color:var(--text-1);}.trend-chart-legend{display:flex;gap:22px;font-size:13px;color:var(--text-3);}.legend-dot{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:6px;vertical-align:middle;}.legend-dot.blue{background:var(--brand);}.legend-dot.gray{background:#b0b8d0;}.trend-chart-actions{display:flex;gap:12px;}.btn-outline{border:1px solid var(--brand);color:var(--brand);background:var(--surface);padding:7px 18px;border-radius:8px;font-size:13px;font-weight:500;cursor:pointer;transition:background .2s ease;}.btn-outline:hover{background:var(--brand-50);}.btn-primary{background:var(--brand);color:#fff;border:none;padding:7px 18px;border-radius:8px;font-size:13px;font-weight:500;cursor:pointer;transition:background .2s ease;}.btn-primary:hover{background:var(--brand-600);}.chart-area{width:100%;height:280px;position:relative;}.chart-area canvas{width:100%;height:100%;display:block;}.price-sidebar{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:24px;box-shadow:var(--shadow-sm);}.price-sidebar-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;padding-bottom:14px;border-bottom:1px solid var(--border-soft);}.price-sidebar-title{font-size:15px;font-weight:600;color:var(--text-1);}.price-sidebar-detail{font-size:13px;color:var(--brand);cursor:pointer;font-weight:500;}.price-item{display:flex;justify-content:space-between;align-items:center;padding:7px 0;border-bottom:1px solid var(--divider);}.price-item:last-of-type{border-bottom:none;}.price-item-name{font-size:15px;font-weight:600;color:var(--text-1);}.price-item-spec{font-size:12px;color:var(--text-4);margin-top:3px;}.price-item-value{text-align:right;}.price-item-value .price{font-size:20px;font-weight:700;color:var(--brand);}.price-item-value .unit{font-size:12px;color:var(--text-4);}.btn-full{width:100%;background:var(--brand-50);color:var(--brand);border:none;padding:12px;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer;transition:background .2s ease;margin-top:18px;}.btn-full:hover{background:var(--brand-100);}.cta{background:linear-gradient(135deg,var(--brand) 0,#2a56b5 100%);padding:52px 56px;border-radius:14px;margin-bottom:52px;display:flex;align-items:center;justify-content:space-between;box-shadow:var(--shadow-md);}.cta-text h2{font-size:28px;color:#fff;font-weight:700;margin-bottom:14px;letter-spacing:.5px;}.cta-text p{font-size:15px;color:rgba(255,255,255,0.82);max-width:600px;line-height:1.8;font-weight:350;}.cta-actions{display:flex;flex-direction:column;align-items:center;gap:14px;}.btn-cta{background:#fff;color:var(--brand);padding:14px 40px;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;border:none;transition:background .2s ease,transform .2s ease,box-shadow .2s ease;}.btn-cta:hover{background:var(--brand-50);transform:translateY(-1px);box-shadow:var(--shadow-md);}.cta-login{font-size:13px;color:rgba(255,255,255,0.7);}.cta-login a{color:#fff;text-decoration:underline;transition:opacity .2s ease;}.cta-login a:hover{opacity:.8;}.container{max-width:1280px;margin:0 auto;width:100%;padding:0 48px;}@media(max-width:1024px){.container{padding:0 24px;}.hero{padding:64px 0 56px;}.hero h1{font-size:34px;letter-spacing:2px;}.hero p{font-size:16px;}.section{padding:44px 0;}.section-title{font-size:22px;}.region-grid{grid-template-columns:repeat(3,1fr);gap:18px;}.trend-content{grid-template-columns:1fr;}.cta{margin-bottom:40px;padding:40px 36px;}.cta-text h2{font-size:24px;}.footer{padding:40px 0 20px;}}@media(max-width:768px){.container{padding:0 16px;}.header{padding:12px 0;}.header .container{flex-wrap:wrap;gap:12px;}.header-left{gap:16px;}.nav{gap:18px;}.nav a{font-size:14px;}.logo{font-size:18px;}.hero{padding:48px 0 40px;}.hero h1{font-size:26px;letter-spacing:1px;}.hero p{font-size:15px;}.section{padding:32px 0;}.section-title{font-size:21px;}.section-header{flex-direction:column;align-items:flex-start;gap:10px;}.trend-chart-actions{align-self:flex-end;}.region-grid{grid-template-columns:repeat(2,1fr);gap:14px;}.region-card{padding:22px;}.updates-grid{grid-template-columns:1fr;gap:18px;}.update-table{overflow-x:auto;}.update-table table{min-width:360px;}.trend-chart-header{flex-direction:column;align-items:flex-start;gap:10px;}.trend-chart-legend{flex-wrap:wrap;}.cta{margin-bottom:32px;padding:32px 24px;flex-direction:column;text-align:center;gap:28px;}.cta-text h2{font-size:22px;}.cta-text p{font-size:15px;}.footer{padding:32px 0 16px;}.footer-grid{grid-template-columns:1fr 1fr;gap:28px;}.footer-bottom{flex-direction:column;gap:10px;text-align:center;}.footer-bottom-links{justify-content:center;flex-wrap:wrap;}}@media(max-width:480px){.header .container{flex-direction:column;align-items:flex-start;}.header-left{width:100%;justify-content:space-between;}.btn-login{align-self:flex-end;}.hero h1{font-size:22px;}.region-grid{grid-template-columns:1fr;}.footer-grid{grid-template-columns:1fr;}.footer-bottom-links{gap:14px;}.cta{padding:28px 20px;}.cta-text h2{font-size:21px;}}