:root{
  --green:#16a34a;--green-dark:#15803d;--green-deep:#166534;--green-light:#dcfce7;--green-mist:#f0fdf4;
  --ink:#0f172a;--ink-2:#334155;--muted:#64748b;--line:#e2e8f0;--bg:#ffffff;--bg-soft:#f8fafc;
  --amber:#f59e0b;--red:#dc2626;--radius:14px;--shadow:0 10px 30px rgba(15,23,42,.08);--shadow-lg:0 20px 50px rgba(15,23,42,.14);
}
*{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","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px}
a{color:var(--green-dark);text-decoration:none;transition:color .2s}
a:hover{color:var(--green-deep)}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
.container{max-width:1160px;margin:0 auto;padding:0 20px}
.section{padding:64px 0}
.section-head{text-align:center;max-width:760px;margin:0 auto 44px}
.section-head .kicker{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--green);background:var(--green-light);padding:6px 14px;border-radius:99px;margin-bottom:14px}
.section-head h2{font-size:32px;line-height:1.3;margin-bottom:12px;color:var(--ink)}
.section-head p{color:var(--muted);font-size:16px}
.btn{display:inline-block;font-weight:600;border-radius:99px;padding:14px 30px;font-size:16px;line-height:1;text-align:center;border:1px solid transparent;cursor:pointer}
.btn-primary{background:linear-gradient(135deg,var(--green),var(--green-dark));color:#fff;box-shadow:0 8px 20px rgba(22,163,74,.35)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(22,163,74,.45)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:#fff}
.btn-ghost:hover{color:var(--green-dark);border-color:var(--green)}
.btn-lg{padding:16px 40px;font-size:17px}
/* header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--ink)}
.brand img{width:32px;height:32px;border-radius:8px}
.brand span{color:var(--green-dark)}
.nav{display:flex;align-items:center;gap:26px}
.nav a{color:var(--ink-2);font-size:15px;font-weight:500}
.nav a:hover{color:var(--green-dark)}
.nav .nav-cta{background:var(--green);color:#fff;padding:9px 20px;border-radius:99px}
.nav .nav-cta:hover{color:#fff;background:var(--green-dark)}
/* hero */
.hero{background:linear-gradient(180deg,var(--green-mist) 0%,#fff 100%);padding:64px 0 0}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero-copy .tag{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--green-light);color:var(--green-dark);font-size:13px;font-weight:600;padding:7px 16px;border-radius:99px;margin-bottom:20px}
.hero-copy h1{font-size:44px;line-height:1.18;margin-bottom:18px;color:var(--ink)}
.hero-copy h1 em{font-style:normal;color:var(--green);position:relative}
.hero-copy .sub{font-size:18px;color:var(--muted);margin-bottom:28px;max-width:520px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:26px}
.hero-stats{display:flex;gap:32px;flex-wrap:wrap}
.hero-stats .stat b{display:block;font-size:26px;color:var(--ink)}
.hero-stats .stat span{font-size:13px;color:var(--muted)}
/* simulator */
.simulator{background:#0b1220;border-radius:18px;padding:22px;box-shadow:var(--shadow-lg);position:relative;overflow:hidden}
.sim-top{display:flex;align-items:center;gap:8px;margin-bottom:18px}
.sim-top .dot{width:11px;height:11px;border-radius:50%}
.sim-top .dot:nth-child(1){background:#f87171}.sim-top .dot:nth-child(2){background:#fbbf24}.sim-top .dot:nth-child(3){background:#34d399}
.sim-url{flex:1;margin-left:8px;background:#1e293b;border-radius:8px;padding:7px 14px;color:#94a3b8;font-size:12px;font-family:ui-monospace,monospace}
.sim-body{background:#111827;border-radius:12px;padding:18px;color:#e5e7eb}
.sim-status{display:flex;align-items:center;gap:10px;padding:12px;background:#1e293b;border-radius:10px;margin-bottom:14px}
.sim-status .ping{width:10px;height:10px;border-radius:50%;background:#34d399;box-shadow:0 0 0 4px rgba(52,211,153,.2)}
.sim-status b{font-size:15px}
.sim-status .val{color:#34d399;font-weight:700;margin-left:auto}
.sim-meta{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:14px}
.sim-card{background:#1e293b;border-radius:10px;padding:12px}
.sim-card .lbl{font-size:11px;color:#94a3b8;display:block;margin-bottom:4px}
.sim-card .num{font-size:18px;font-weight:700;color:#fff}
.sim-card .num.green{color:#34d399}
.sim-bar{height:8px;background:#1e293b;border-radius:99px;overflow:hidden;margin:8px 0}
.sim-bar i{display:block;height:100%;background:linear-gradient(90deg,#34d399,#16a34a);border-radius:99px}
.sim-nodes{display:flex;justify-content:space-between;align-items:center;padding:6px 2px;font-size:11px;color:#94a3b8}
/* notice */
.notice-bar{background:var(--green);color:#fff;padding:12px 0}
.notice-bar .container{display:flex;align-items:center;gap:12px;font-size:14px}
.notice-bar b{font-weight:700}
/* cards grid */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.25s}
.card:hover{box-shadow:var(--shadow);transform:translateY(-4px);border-color:var(--green-light)}
.card .icon{width:52px;height:52px;border-radius:12px;background:var(--green-light);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:18px}
.card h3{font-size:19px;margin-bottom:10px}
.card p{color:var(--muted);font-size:15px}
/* feature list */
.feature-item{display:flex;gap:16px;padding:22px 0;border-bottom:1px solid var(--line)}
.feature-item:last-child{border-bottom:0}
.feature-item .num{flex:none;width:40px;height:40px;border-radius:10px;background:var(--green-light);color:var(--green-dark);font-weight:800;display:flex;align-items:center;justify-content:center}
.feature-item h3{font-size:18px;margin-bottom:6px}
.feature-item p{color:var(--muted);font-size:15px}
/* compare table */
.compare{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius)}
.compare table{width:100%;border-collapse:collapse;min-width:640px}
.compare th,.compare td{padding:16px 20px;text-align:center;border-bottom:1px solid var(--line);font-size:15px}
.compare thead th{background:var(--bg-soft);font-weight:700;color:var(--ink-2)}
.compare tbody tr:last-child td{border-bottom:0}
.compare .brand-col{text-align:left;font-weight:600}
.compare .yes{color:var(--green);font-weight:700}
.compare .no{color:#cbd5e1}
.compare .hl{background:var(--green-mist)}
.compare .hl th:first-child,.compare .hl td:first-child{color:var(--green-dark);font-weight:700}
/* news tabs */
.tabs{display:flex;gap:8px;justify-content:center;margin-bottom:28px;flex-wrap:wrap}
.tab{display:inline-block;padding:9px 20px;border-radius:99px;border:1px solid var(--line);color:var(--ink-2);font-size:14px;font-weight:500}
.tab.active{background:var(--green);color:#fff;border-color:var(--green)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s}
.news-card:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.news-card .thumb{background:var(--green-light);height:150px;display:flex;align-items:center;justify-content:center;font-size:40px}
.news-card .body{padding:20px}
.news-card .cat{font-size:12px;color:var(--green);font-weight:600}
.news-card h3{font-size:17px;margin:8px 0;line-height:1.4}
.news-card h3 a{color:var(--ink)}
.news-card h3 a:hover{color:var(--green-dark)}
.news-card .date{font-size:13px;color:var(--muted)}
/* reviews */
.review{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;position:relative}
.review .stars{color:var(--amber);font-size:16px;margin-bottom:12px;letter-spacing:2px}
.review p{color:var(--ink-2);font-size:15px;margin-bottom:16px}
.review .user{display:flex;align-items:center;gap:12px}
.review .user .av{width:42px;height:42px;border-radius:50%;background:var(--green-light);color:var(--green-dark);font-weight:700;display:flex;align-items:center;justify-content:center}
.review .user b{display:block;font-size:15px}
.review .user span{font-size:13px;color:var(--muted)}
/* download */
.dl-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.dl-card{border:1px solid var(--line);border-radius:var(--radius);padding:24px 16px;text-align:center;transition:.25s}
.dl-card:hover{box-shadow:var(--shadow);border-color:var(--green);transform:translateY(-4px)}
.dl-card .os{font-size:38px;margin-bottom:12px}
.dl-card h3{font-size:16px;margin-bottom:6px}
.dl-card .ver{font-size:12px;color:var(--muted);margin-bottom:16px}
.dl-card .btn{width:100%;font-size:14px;padding:11px}
/* trust */
.trust{background:var(--bg-soft)}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.trust-item{text-align:center}
.trust-item .icon{font-size:40px;margin-bottom:12px}
.trust-item h3{font-size:17px;margin-bottom:6px}
.trust-item p{color:var(--muted);font-size:14px}
/* scenarios */
.scenario{display:flex;gap:18px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.scenario .emoji{font-size:34px}
.scenario h3{font-size:17px;margin-bottom:6px}
.scenario p{color:var(--muted);font-size:14px}
/* faq */
.faq-item{border:1px solid var(--line);border-radius:var(--radius);margin-bottom:14px;overflow:hidden}
.faq-q{padding:20px 24px;font-weight:600;font-size:16px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;background:#fff}
.faq-q .plus{font-size:22px;color:var(--green);transition:.25s}
.faq-a{display:none;padding:0 24px 22px;color:var(--ink-2);font-size:15px}
.faq-item.open .faq-a{display:block}
.faq-item.open .plus{transform:rotate(45deg)}
.faq-a ol{padding-left:22px;list-style:decimal;margin-top:10px}
.faq-a ol li{margin-bottom:8px}
/* cta */
.cta{background:linear-gradient(135deg,var(--green-deep),var(--green-dark));color:#fff;text-align:center;border-radius:22px;padding:60px 30px;margin:0 20px 64px}
.cta h2{font-size:32px;margin-bottom:12px}
.cta p{color:rgba(255,255,255,.85);margin-bottom:26px;font-size:17px}
.cta .btn-primary{background:#fff;color:var(--green-dark);box-shadow:none}
/* footer */
.site-footer{background:#0b1220;color:#cbd5e1;padding:56px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px;border-bottom:1px solid #1e293b}
.footer-brand{color:#fff;font-weight:800;font-size:18px;display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand img{width:28px;height:28px;border-radius:6px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col a{display:block;color:#94a3b8;margin-bottom:10px}
.footer-col a:hover{color:#fff}
.footer-bottom{padding:20px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;color:#64748b;font-size:13px}
/* breadcrumb */
.breadcrumb{background:var(--bg-soft);padding:16px 0;font-size:14px;color:var(--muted)}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--green-dark)}
.breadcrumb .sep{margin:0 8px}
/* page hero */
.page-hero{background:linear-gradient(180deg,var(--green-mist),#fff);padding:56px 0 40px;text-align:center}
.page-hero h1{font-size:38px;margin-bottom:12px}
.page-hero p{color:var(--muted);max-width:680px;margin:0 auto}
/* article */
.article-layout{display:grid;grid-template-columns:1fr 300px;gap:40px;align-items:start}
.article-body{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:36px}
.article-body h1{font-size:30px;line-height:1.3;margin-bottom:14px}
.article-meta{display:flex;gap:16px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:20px;flex-wrap:wrap}
.article-meta .cat{background:var(--green-light);color:var(--green-dark);padding:3px 12px;border-radius:99px;font-weight:600}
.article-body .lead{font-size:17px;color:var(--ink-2);border-left:4px solid var(--green);padding-left:16px;margin-bottom:24px}
.article-body h2{font-size:23px;margin:30px 0 14px;padding-top:10px}
.article-body p{margin-bottom:16px;color:var(--ink-2)}
.article-body figure{margin:22px 0}
.article-body figure img{border-radius:12px;width:100%}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.toc{background:var(--bg-soft);border:1px solid var(--line);border-radius:10px;padding:18px 22px;margin:20px 0}
.toc h4{font-size:14px;color:var(--ink-2);margin-bottom:10px}
.toc a{display:block;color:var(--green-dark);font-size:14px;margin-bottom:6px}
.sidebar{position:sticky;top:88px}
.sidebar .box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin-bottom:20px}
.sidebar .box h4{font-size:16px;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.sidebar .hot a{display:flex;gap:10px;align-items:flex-start;margin-bottom:14px;font-size:14px;color:var(--ink-2)}
.sidebar .hot a:hover{color:var(--green-dark)}
.sidebar .hot .idx{flex:none;width:22px;height:22px;border-radius:6px;background:var(--green-light);color:var(--green-dark);font-weight:700;font-size:12px;display:flex;align-items:center;justify-content:center}
.sidebar .cat-list a{display:block;padding:8px 0;color:var(--ink-2);font-size:14px;border-bottom:1px dashed var(--line)}
.article-nav{display:flex;justify-content:space-between;gap:16px;margin-top:30px;padding-top:20px;border-top:1px solid var(--line);font-size:14px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:20px}
.sitemap-list a{display:block;padding:8px 0;border-bottom:1px dashed var(--line);color:var(--ink-2)}
.sitemap-list a:hover{color:var(--green-dark)}
.stat-code{display:none}
@media(max-width:960px){
  .hero-grid,.grid-3,.news-grid,.footer-grid,.article-layout{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .dl-grid{grid-template-columns:repeat(2,1fr)}
  .trust-grid{grid-template-columns:repeat(2,1fr)}
  .related-grid{grid-template-columns:1fr}
  .nav{display:none}
  .hero-copy h1{font-size:32px}
  .sidebar{position:static}
}