/* 爱加速 · 全站样式（中英通用） */
:root{
  --deep:#081C3A;--blue:#0B5FFF;--cyan:#00C6FF;--green:#00E5A0;
  --bg:#F5F9FF;--card:#FFFFFF;--ink:#0D1B33;--muted:#5A6B8C;--line:#E4EDFB;
  --radius:18px;--shadow:0 12px 40px rgba(11,95,255,.08);--maxw:1180px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
h1,h2,h3,h4{line-height:1.3;color:var(--deep);font-weight:700}
section{padding:64px 0}
.sec-head{text-align:center;margin-bottom:44px}
.sec-head .tag{display:inline-block;padding:5px 16px;border-radius:999px;background:linear-gradient(90deg,var(--blue),var(--cyan));color:#fff;font-size:13px;font-weight:600;letter-spacing:.5px;margin-bottom:14px}
.sec-head h2{font-size:34px;margin-bottom:12px}
.sec-head p{color:var(--muted);max-width:640px;margin:0 auto;font-size:16px}
/* 顶部导航 */
.topbar{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:10px}
.brand img{width:36px;height:36px;border-radius:9px}
.brand b{font-size:19px;color:var(--deep)}
.brand span{color:var(--blue)}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-menu a{padding:8px 13px;border-radius:9px;color:var(--ink);font-size:15px;font-weight:500;transition:.2s}
.nav-menu a:hover{background:#EEF4FF;color:var(--blue)}
.nav-menu a.cta{background:linear-gradient(90deg,var(--blue),var(--cyan));color:#fff;margin-left:8px;padding:9px 18px;box-shadow:0 6px 18px rgba(11,95,255,.28)}
.lang{display:flex;gap:6px;margin-left:8px}
.lang a{padding:6px 11px;border:1px solid var(--line);border-radius:8px;font-size:13px;color:var(--muted);font-weight:600}
.lang a.on{background:var(--blue);border-color:var(--blue);color:#fff}
/* Hero */
.hero{background:radial-gradient(1200px 500px at 70% -10%,#1B5BFF 0%,transparent 60%),linear-gradient(180deg,#0A2E6E 0%,#081C3A 100%);color:#fff;padding:80px 0 90px;position:relative;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero .badge{display:inline-flex;align-items:center;gap:8px;background:rgba(0,229,160,.14);border:1px solid rgba(0,229,160,.35);color:var(--green);padding:6px 15px;border-radius:999px;font-size:13px;font-weight:600;margin-bottom:20px}
.hero h1{font-size:46px;color:#fff;margin-bottom:18px;letter-spacing:.5px}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,var(--cyan),var(--green));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero .sub{color:#C6D6F2;font-size:18px;max-width:520px;margin-bottom:30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 30px;border-radius:12px;font-size:16px;font-weight:700;cursor:pointer;transition:.2s;border:none}
.btn-primary{background:linear-gradient(90deg,var(--green),#00C896);color:#04221A;box-shadow:0 10px 26px rgba(0,229,160,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(0,229,160,.42)}
.btn-ghost{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.25);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.16)}
.hero-stats{display:flex;gap:30px;margin-top:34px;flex-wrap:wrap}
.hero-stats b{display:block;font-size:26px;color:#fff}
.hero-stats span{font-size:13px;color:#9DB4DC}
/* 模拟器 */
.sim{background:rgba(13,35,66,.72);border:1px solid rgba(255,255,255,.12);border-radius:20px;overflow:hidden;box-shadow:0 30px 70px rgba(0,0,0,.35);backdrop-filter:blur(8px)}
.sim-bar{display:flex;align-items:center;gap:8px;padding:12px 16px;background:rgba(255,255,255,.06);border-bottom:1px solid rgba(255,255,255,.08)}
.sim-bar i{width:12px;height:12px;border-radius:50%;display:block}
.sim-bar .r{background:#FF5F57}.sim-bar .y{background:#FEBC2E}.sim-bar .g{background:#28C840}
.sim-bar span{margin-left:auto;font-size:12px;color:#9DB4DC}
.sim-body{padding:22px}
.sim-metric{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}
.sim-metric .lbl{font-size:13px;color:#9DB4DC}
.sim-metric .val{font-size:44px;font-weight:800;color:var(--green);font-variant-numeric:tabular-nums}
.sim-ring{position:relative;width:150px;height:150px;margin:0 auto 18px;border-radius:50%;background:conic-gradient(var(--green) 0 72%,rgba(255,255,255,.08) 72% 100%);display:flex;align-items:center;justify-content:center}
.sim-ring::before{content:"";position:absolute;inset:14px;background:#0D2342;border-radius:50%}
.sim-ring b{position:relative;font-size:30px;color:#fff}
.sim-row{display:flex;justify-content:space-between;padding:10px 12px;background:rgba(255,255,255,.04);border-radius:10px;margin-bottom:8px;font-size:14px}
.sim-row span{color:#9DB4DC}
.sim-row b{color:#fff;font-weight:600}
.sim-row .ok{color:var(--green)}
.sim-connect{display:block;text-align:center;width:100%;margin-top:16px;padding:13px;border-radius:12px;background:linear-gradient(90deg,var(--green),#00C896);color:#04221A;font-weight:800;font-size:16px}
.sim-connect:hover{filter:brightness(1.06)}
/* 核心功能 */
.features{background:#fff}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature-card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;transition:.25s}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.feature-card .ico{width:54px;height:54px;border-radius:14px;background:linear-gradient(135deg,var(--blue),var(--cyan));display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:18px}
.feature-card h3{font-size:20px;margin-bottom:10px}
.feature-card p{color:var(--muted);font-size:15px}
/* 公告 */
.notice{background:linear-gradient(90deg,#0A2E6E,#0B5FFF);color:#fff;padding:20px 0}
.notice .wrap{display:flex;align-items:center;gap:14px}
.notice .lbl{background:var(--green);color:#04221A;padding:4px 14px;border-radius:999px;font-size:13px;font-weight:700;white-space:nowrap}
.notice p{font-size:15px}
.notice a{color:var(--cyan);text-decoration:underline}
/* 信任背书 */
.trust{background:#fff;padding:50px 0}
.trust-grid{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;text-align:center}
.trust-item{flex:1;min-width:150px}
.trust-item b{display:block;font-size:34px;color:var(--blue);font-weight:800}
.trust-item span{font-size:14px;color:var(--muted)}
/* 应用场景 */
.scenario-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.scenario-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 22px;text-align:center;transition:.2s}
.scenario-card:hover{box-shadow:var(--shadow)}
.scenario-card .em{font-size:38px;display:block;margin-bottom:12px}
.scenario-card h3{font-size:18px;margin-bottom:8px}
.scenario-card p{font-size:14px;color:var(--muted)}
/* 对比表 */
.compare-table{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.compare-table table{width:100%;border-collapse:collapse;font-size:15px}
.compare-table th,.compare-table td{padding:16px 18px;text-align:center;border-bottom:1px solid var(--line)}
.compare-table th{background:var(--deep);color:#fff;font-weight:700}
.compare-table th.hl{background:linear-gradient(90deg,var(--blue),var(--cyan))}
.compare-table td:first-child{text-align:left;font-weight:600;color:var(--deep)}
.compare-table tr:last-child td{border-bottom:none}
.check{color:var(--green);font-weight:700}
.cross{color:#D0D8E6}
/* 新闻 */
.news-tabs{display:flex;justify-content:center;gap:10px;margin-bottom:32px;flex-wrap:wrap}
.news-tabs a{padding:9px 20px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:14px;font-weight:600;color:var(--muted)}
.news-tabs a.on{background:linear-gradient(90deg,var(--blue),var(--cyan));color:#fff;border-color:transparent}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.2s}
.news-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.news-card img{width:100%;height:180px;object-fit:cover}
.news-card .bd{padding:20px}
.news-card .cat{font-size:12px;color:var(--blue);font-weight:700}
.news-card h3{font-size:17px;margin:8px 0;line-height:1.45}
.news-card .meta{font-size:12px;color:var(--muted)}
/* 评论 */
.reviews{background:#fff}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.review-card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.review-card .stars{color:#FFB400;letter-spacing:2px;margin-bottom:10px}
.review-card p{color:var(--ink);font-size:15px;margin-bottom:16px}
.review-card .user{display:flex;align-items:center;gap:10px}
.review-card .avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--cyan));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700}
.review-card .user b{display:block;font-size:14px}
.review-card .user span{font-size:12px;color:var(--muted)}
/* 下载区 */
.download{background:linear-gradient(180deg,#0A2E6E,#081C3A);color:#fff}
.download .sec-head h2{color:#fff}
.download .sec-head p{color:#C6D6F2}
.dl-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.dl-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:26px 18px;text-align:center;transition:.2s}
.dl-card:hover{background:rgba(255,255,255,.12)}
.dl-card .em{font-size:34px;display:block;margin-bottom:10px}
.dl-card h3{font-size:16px;color:#fff;margin-bottom:6px}
.dl-card span{font-size:12px;color:#9DB4DC;display:block;margin-bottom:14px}
.dl-card a{display:inline-block;padding:9px 20px;border-radius:10px;background:linear-gradient(90deg,var(--green),#00C896);color:#04221A;font-size:14px;font-weight:700}
/* FAQ */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:14px;overflow:hidden}
.faq-q{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;font-weight:700;font-size:17px;color:var(--deep)}
.faq-q .ic{font-size:22px;color:var(--blue)}
.faq-a{padding:0 24px 22px;color:var(--muted);font-size:15px;display:none}
.faq-item[open] .faq-a{display:block}
.faq-a ol{padding-left:22px;margin-top:10px}
.faq-a ol li{margin-bottom:8px}
.faq-a b{color:var(--blue)}
/* CTA + 页脚 */
.cta{background:linear-gradient(120deg,#0B5FFF,#00C6FF);color:#fff;text-align:center;padding:70px 0}
.cta h2{color:#fff;font-size:34px;margin-bottom:14px}
.cta p{color:#EAF2FF;margin-bottom:28px;font-size:17px}
.cta .btn-primary{background:#fff;color:var(--blue)}
footer{background:var(--deep);color:#9DB4DC;padding:54px 0 30px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:36px}
.foot-grid h4{color:#fff;font-size:16px;margin-bottom:16px}
.foot-grid a{display:block;font-size:14px;color:#9DB4DC;padding:5px 0}
.foot-grid a:hover{color:var(--cyan)}
.foot-brand{color:#C6D6F2;font-size:14px;margin-top:12px;max-width:280px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:22px;text-align:center;font-size:13px}
.foot-bottom a{color:var(--cyan)}
/* 面包屑 */
.crumbs{background:#fff;border-bottom:1px solid var(--line);padding:14px 0;font-size:14px;color:var(--muted)}
.crumbs a{color:var(--blue)}
.crumbs span{color:var(--muted)}
.crumbs .sep{margin:0 8px;color:#C3CFE4}
/* 页面通用 */
.page-hero{background:linear-gradient(180deg,#0A2E6E,#081C3A);color:#fff;padding:56px 0;text-align:center}
.page-hero h1{color:#fff;font-size:38px;margin-bottom:12px}
.page-hero p{color:#C6D6F2;max-width:640px;margin:0 auto}
.content-page{padding:50px 0}
.prose{max-width:820px;margin:0 auto}
.prose h2{font-size:26px;margin:36px 0 16px;color:var(--deep)}
.prose h3{font-size:20px;margin:26px 0 12px}
.prose p{margin-bottom:16px;color:var(--ink)}
.prose ul,.prose ol{padding-left:24px;margin-bottom:16px}
.prose li{margin-bottom:8px}
.prose table{width:100%;border-collapse:collapse;margin:20px 0;font-size:15px}
.prose table th,.prose table td{border:1px solid var(--line);padding:12px 14px;text-align:left}
.prose table th{background:var(--deep);color:#fff}
.prose table tr:nth-child(even){background:#F7FAFF}
.prose blockquote{border-left:4px solid var(--blue);background:#EEF4FF;padding:14px 18px;margin:18px 0;border-radius:0 10px 10px 0;color:var(--ink)}
.prose img{border-radius:14px;margin:20px 0}
.prose figcaption{font-size:13px;color:var(--muted);text-align:center;margin:-12px 0 20px}
/* 新闻详情侧栏 */
.news-layout{display:grid;grid-template-columns:1fr 320px;gap:40px;align-items:start}
.sidebar{position:sticky;top:86px}
.sidebar .box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin-bottom:20px}
.sidebar h3{font-size:17px;margin-bottom:14px;color:var(--deep)}
.sidebar a{display:block;font-size:14px;color:var(--ink);padding:7px 0;border-bottom:1px dashed var(--line)}
.sidebar a:hover{color:var(--blue)}
.sidebar a:last-child{border-bottom:none}
.related{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:44px}
/* 响应式 */
@media(max-width:960px){
  .hero .wrap{grid-template-columns:1fr}
  .feature-grid,.news-grid,.review-grid,.related{grid-template-columns:repeat(2,1fr)}
  .scenario-grid{grid-template-columns:repeat(2,1fr)}
  .dl-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:repeat(2,1fr)}
  .news-layout{grid-template-columns:1fr}
  .sidebar{position:static}
  .nav-menu{display:none}
}
@media(max-width:560px){
  .feature-grid,.news-grid,.review-grid,.scenario-grid,.dl-grid,.related{grid-template-columns:1fr}
  .hero h1{font-size:32px}
  section{padding:46px 0}
}