:root{
  --green:#0e9f6e;--green-dark:#047857;--green-light:#34d399;--tea:#0b3d2e;
  --ink:#0f172a;--muted:#5b6b7b;--line:#e5eaf0;--bg:#f6f9f7;--card:#ffffff;
  --accent:#16a34a;--lime:#a3e635;--radius:16px;--shadow:0 6px 24px rgba(15,60,45,.08);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1180px;margin:0 auto;padding:0 22px}
.section{padding:72px 0}
.section--alt{background:var(--card)}
.section--dark{background:linear-gradient(160deg,#0b3d2e,#065f46);color:#eafff5}
.h2{font-size:30px;line-height:1.3;margin-bottom:10px;font-weight:800}
.h3{font-size:20px;font-weight:700;margin-bottom:8px}
.lead{color:var(--muted);max-width:680px;font-size:17px}
.center{text-align:center}
.center .lead{margin-left:auto;margin-right:auto}
.kicker{display:inline-block;color:var(--green-dark);background:#dff5ec;font-weight:700;font-size:13px;padding:5px 14px;border-radius:99px;margin-bottom:14px;letter-spacing:.4px}
.muted{color:var(--muted)}
.green{color:var(--green-dark)}
.small{font-size:13px}
/* ---------- Buttons (all <a>) ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;border-radius:12px;padding:13px 26px;font-size:16px;transition:.18s;border:1px solid transparent;cursor:pointer;line-height:1.2}
.btn-primary{background:linear-gradient(135deg,var(--green),var(--accent));color:#fff;box-shadow:0 8px 22px rgba(14,159,110,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(14,159,110,.45)}
.btn-ghost{background:transparent;color:var(--green-dark);border-color:var(--green)}
.btn-ghost:hover{background:#e9f9f2}
.btn-light{background:#fff;color:var(--tea);box-shadow:0 6px 20px rgba(0,0,0,.18)}
.btn-light:hover{transform:translateY(-2px)}
.btn-block{width:100%}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:10px}
/* ---------- Header ---------- */
.header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px}
.brand img{width:34px;height:34px;border-radius:8px}
.brand span{color:var(--tea)}
.nav{display:flex;align-items:center;gap:4px}
.nav a{padding:8px 14px;border-radius:9px;font-weight:600;font-size:15px;color:var(--ink)}
.nav a:hover{background:#eef4f0;color:var(--green-dark)}
.nav .lang{margin-left:10px;border:1px solid var(--line);border-radius:99px;display:inline-flex;overflow:hidden}
.nav .lang a{padding:6px 12px;font-size:13px;border-radius:0}
.nav .lang a.active{background:var(--green);color:#fff}
.nav-cta{margin-left:8px}
/* ---------- Hero ---------- */
.hero{background:radial-gradient(1200px 500px at 80% -10%,#d8f3e7,transparent),linear-gradient(180deg,#f6f9f7,#fff);padding:60px 0 80px}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero h1{font-size:44px;line-height:1.18;font-weight:900;margin:16px 0}
.hero h1 .g{background:linear-gradient(90deg,var(--green),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:var(--muted);font-size:18px;margin:18px 0 26px;max-width:520px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-meta{display:flex;gap:22px;margin-top:28px;flex-wrap:wrap;color:var(--muted);font-size:14px}
.hero-meta b{color:var(--green-dark);font-size:18px;display:block}
/* Simulator */
.simulator{position:relative}
.sim-frame{background:linear-gradient(180deg,#fff,#f3f8f5);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:18px;max-width:430px;margin-left:auto}
.sim-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.sim-top .dot{display:flex;gap:5px}
.sim-top .dot i{width:10px;height:10px;border-radius:50%;display:block}
.sim-title{font-size:13px;color:var(--muted);font-weight:600}
.sim-status{display:flex;align-items:center;gap:14px;background:#f0f7f3;border-radius:14px;padding:14px;margin-bottom:14px}
.sim-ring{width:62px;height:62px;border-radius:50%;background:conic-gradient(var(--green) 0 78%,#dcebe3 78%);display:grid;place-items:center;flex:none}
.sim-ring b{background:#fff;width:46px;height:46px;border-radius:50%;display:grid;place-items:center;font-size:15px;color:var(--green-dark)}
.sim-status .r b{font-size:15px}
.sim-status .r p{font-size:12px;color:var(--muted)}
.sim-row{display:flex;justify-content:space-between;align-items:center;padding:10px 2px;border-bottom:1px dashed var(--line);font-size:14px}
.sim-row .val{font-weight:700;color:var(--tea)}
.sim-node{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:11px 13px;margin:14px 0}
.sim-node img{width:26px;height:26px;border-radius:6px}
.sim-node .nm{font-weight:700;font-size:14px}
.sim-node .loc{font-size:12px;color:var(--muted)}
.sim-connect{width:100%}
.sim-float{position:absolute;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:10px 14px;font-size:13px;font-weight:600}
.sim-float.f1{top:6%;right:-14px}
.sim-float.f2{bottom:14%;left:-14px}
.sim-float b{color:var(--green-dark)}
@media(max-width:900px){.hero-inner{grid-template-columns:1fr}.sim-frame{margin:0 auto}.sim-float{display:none}.hero h1{font-size:34px}}
/* ---------- Generic grids ---------- */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
@media(max-width:900px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.grid-3,.grid-4,.grid-2{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.18s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card .ico{width:52px;height:52px;border-radius:14px;background:#e6f6ee;display:grid;place-items:center;font-size:24px;margin-bottom:16px}
.card h3{font-size:18px;margin-bottom:8px}
.card p{color:var(--muted);font-size:14.5px}
/* Feature numbered */
.feat-num{font-size:12px;color:var(--green-dark);font-weight:800;letter-spacing:.5px;display:block;margin-bottom:8px}
/* ---------- Notice / announcement ---------- */
.notice{background:#fff;border:1px solid var(--line);border-left:4px solid var(--green);border-radius:12px;padding:16px 20px;margin-bottom:18px;display:flex;gap:12px;align-items:flex-start}
.notice .tag{background:var(--green);color:#fff;font-size:12px;font-weight:700;padding:3px 10px;border-radius:6px;white-space:nowrap}
.notice p{font-size:14.5px;color:#334155}
/* ---------- Trust ---------- */
.trust{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.trust .item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 24px;display:flex;align-items:center;gap:12px;font-weight:700;color:var(--tea)}
.trust .item .big{font-size:26px}
/* ---------- Compare table ---------- */
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
table.cmp{width:100%;border-collapse:collapse;min-width:640px}
.cmp th,.cmp td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--line);font-size:14.5px}
.cmp th{background:#f2f8f4;color:var(--tea);font-weight:700}
.cmp td.ok{color:var(--green-dark);font-weight:700}
.cmp td.no{color:#cbd5e1}
.cmp tr:last-child td{border-bottom:none}
.cmp .highlight{background:#f0fbf5}
/* ---------- News ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:900px){.news-grid{grid-template-columns:1fr}}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.news-card .thumb{height:160px;background:linear-gradient(135deg,#dff5ec,#bdeede);display:grid;place-items:center;font-size:44px;color:var(--green-dark)}
.news-card .body{padding:18px}
.news-card .cat{font-size:12px;color:var(--green-dark);font-weight:700}
.news-card h3{font-size:17px;margin:8px 0;line-height:1.4}
.news-card h3 a:hover{color:var(--green-dark)}
.news-card .meta{font-size:12.5px;color:var(--muted)}
.tabs{display:flex;gap:8px;margin-bottom:26px;flex-wrap:wrap}
.tabs a{padding:9px 18px;border-radius:99px;border:1px solid var(--line);font-size:14px;font-weight:600;background:#fff}
.tabs a.active,.tabs a:hover{background:var(--green);color:#fff;border-color:var(--green)}
/* ---------- Reviews ---------- */
.review{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.review .stars{color:#f59e0b;letter-spacing:2px;font-size:15px}
.review p{font-size:15px;margin:10px 0;color:#334155}
.review .who{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.review .who .ava{width:36px;height:36px;border-radius:50%;background:#dff5ec;display:grid;place-items:center;font-weight:800;color:var(--green-dark)}
/* ---------- FAQ ---------- */
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:14px;overflow:hidden}
.faq-item summary{list-style:none;cursor:pointer;padding:18px 22px;font-weight:700;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:after{content:"+";font-size:22px;color:var(--green-dark);transition:.2s}
.faq-item[open] summary:after{transform:rotate(45deg)}
.faq-answer{padding:0 22px 20px;color:#334155;font-size:15px}
.faq-answer ol{padding-left:20px;display:grid;gap:8px}
.faq-answer ol li{line-height:1.65}
/* ---------- Breadcrumb ---------- */
.breadcrumb{font-size:13.5px;color:var(--muted);margin:18px 0}
.breadcrumb a:hover{color:var(--green-dark)}
.breadcrumb span{color:var(--muted)}
/* ---------- Article ---------- */
.article-layout{display:grid;grid-template-columns:1fr 300px;gap:36px;align-items:start}
@media(max-width:960px){.article-layout{grid-template-columns:1fr}}
.article{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px}
.article h1{font-size:30px;line-height:1.35;margin:12px 0}
.article .meta{color:var(--muted);font-size:13.5px;margin-bottom:20px;display:flex;gap:16px;flex-wrap:wrap}
.article .cover{height:240px;border-radius:14px;background:linear-gradient(135deg,#0b3d2e,#0e9f6e);display:grid;place-items:center;color:#fff;font-size:40px;margin:20px 0}
.article h2{font-size:23px;margin:28px 0 12px;color:var(--tea);padding-left:12px;border-left:4px solid var(--green)}
.article p{margin-bottom:16px;color:#334155;line-height:1.85}
.article ul,.article ol{padding-left:24px;margin-bottom:16px;color:#334155;display:grid;gap:6px}
.article table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14px}
.article table th,.article table td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article table th{background:#f2f8f4}
.article .toc{background:#f6f9f7;border:1px solid var(--line);border-radius:12px;padding:18px 22px;margin:20px 0}
.article .toc h3{margin-bottom:10px;font-size:16px}
.article .toc a{display:block;padding:4px 0;color:var(--green-dark);font-size:14.5px}
.article blockquote{border-left:4px solid var(--green);background:#f0fbf5;padding:14px 18px;border-radius:0 10px 10px 0;margin:18px 0;color:#334155}
.sidebar{position:sticky;top:80px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin-bottom:18px}
.side-card h4{font-size:16px;margin-bottom:12px;color:var(--tea)}
.side-card a.hot{display:flex;gap:10px;padding:9px 0;border-bottom:1px dashed var(--line);font-size:14px;line-height:1.4}
.side-card a.hot:hover{color:var(--green-dark)}
.side-card a.hot .n{color:var(--green);font-weight:800;font-size:14px;flex:none}
.side-card a.cat{display:block;padding:7px 0;font-size:14px;color:var(--muted)}
.side-card a.cat:hover{color:var(--green-dark)}
.pager{display:flex;justify-content:space-between;gap:14px;margin-top:26px;flex-wrap:wrap}
.pager a{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 18px;flex:1;min-width:200px}
.pager a:hover{border-color:var(--green)}
.pager a small{display:block;color:var(--muted);font-size:12px;margin-bottom:4px}
.pager a.next{text-align:right}
/* ---------- Comments ---------- */
.comment{border-top:1px solid var(--line);padding-top:14px;margin-top:14px}
.comment .c-head{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);margin-bottom:6px}
.comment .c-head .ava{width:30px;height:30px;border-radius:50%;background:#dff5ec;display:grid;place-items:center;font-weight:700;color:var(--green-dark);flex:none}
.comment p{font-size:14px;color:#334155;margin:0}
/* ---------- Download ---------- */
.platforms{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
@media(max-width:900px){.platforms{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.platforms{grid-template-columns:1fr}}
.plat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;text-align:center;display:flex;flex-direction:column;gap:10px}
.plat .os{font-size:40px;line-height:1}
.plat h3{font-size:17px}
.plat p{font-size:13px;color:var(--muted);margin-bottom:6px}
/* ---------- Footer ---------- */
.footer{background:#0b2f24;color:#c9e8d8;padding:60px 0 0;margin-top:0}
.footer a{color:#c9e8d8}
.footer a:hover{color:#fff}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:34px;padding-bottom:34px}
@media(max-width:800px){.footer-grid{grid-template-columns:1fr 1fr}}
.footer h4{color:#fff;font-size:15px;margin-bottom:14px}
.footer .f-links a{display:block;padding:5px 0;font-size:14px}
.footer .f-brand{font-size:15px;color:#c9e8d8;max-width:280px}
.footer .f-brand .brand{margin-bottom:14px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;font-size:13px;color:#8fb9a5;text-align:center}
.footer-bottom a{color:#8fb9a5}
/* ---------- Sitemap / misc ---------- */
.sitemap-list{columns:2;gap:30px}
@media(max-width:700px){.sitemap-list{columns:1}}
.sitemap-list a{display:block;padding:6px 0;color:var(--green-dark);font-size:14.5px;border-bottom:1px dashed var(--line)}
.error-page{min-height:70vh;display:grid;place-items:center;text-align:center}
.error-page .code{font-size:90px;font-weight:900;color:var(--green);line-height:1}
.mt{margin-top:18px}.mt-lg{margin-top:40px}
.cover-alt{background:linear-gradient(160deg,#0b3d2e,#065f46);color:#eafff5;padding:56px 0}
.cover-alt h1{font-size:34px;margin:12px 0}