:root{--green:#0e9f6e;--green-dark:#046c4e;--green-darker:#0b3d2e;--ink:#0b2b23;--accent:#f59e0b;--accent-dark:#d97706;--bg:#f7faf8;--card:#ffffff;--line:#e5ece8;--muted:#5b6b63;--radius:14px;--shadow:0 6px 24px rgba(11,61,46,.08)}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Segoe UI",system-ui,-apple-system,sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none;transition:.2s}
img{max-width:100%;display:block}
ul{list-style:none}
.container{max-width:1160px;margin:0 auto;padding:0 20px}
.section{padding:72px 0}
.section-head{text-align:center;margin-bottom:44px}
.section-head .tag{display:inline-block;font-size:13px;color:var(--green);background:#e7f6ef;padding:5px 14px;border-radius:20px;margin-bottom:12px;font-weight:600}
.section-head h2{font-size:34px;line-height:1.3;letter-spacing:.5px}
.section-head p{color:var(--muted);margin-top:12px;font-size:16px;max-width:640px;margin-left:auto;margin-right:auto}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 30px;border-radius:40px;font-weight:600;font-size:15px;line-height:1;cursor:pointer;border:0}
.btn-primary{background:linear-gradient(135deg,var(--green),var(--green-dark));color:#fff;box-shadow:0 8px 22px rgba(14,159,110,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(14,159,110,.42)}
.btn-accent{background:linear-gradient(135deg,var(--accent),var(--accent-dark));color:#fff;box-shadow:0 8px 22px rgba(245,158,11,.3)}
.btn-accent:hover{transform:translateY(-2px)}
.btn-ghost{border:1.5px solid var(--green);color:var(--green);background:transparent}
.btn-ghost:hover{background:var(--green);color:#fff}
.btn-lg{padding:16px 40px;font-size:16px}
/* header */
.topbar{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);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;font-weight:700;font-size:19px;color:var(--green-dark)}
.brand img{width:30px;height:30px;border-radius:7px}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a{font-size:15px;font-weight:500;color:#33453d}
.nav-links a:hover,.nav-links a.active{color:var(--green)}
.nav-cta{display:flex;align-items:center;gap:12px}
/* hero */
.hero{position:relative;background:linear-gradient(160deg,#06301f 0%,#0b4f38 55%,#0e9f6e 100%);color:#fff;overflow:hidden;padding:80px 0 90px}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 20% 10%,rgba(14,159,110,.35),transparent 60%)}
.hero .container{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;position:relative;z-index:2}
.hero h1{font-size:44px;line-height:1.22;font-weight:800;letter-spacing:.5px}
.hero h1 em{font-style:normal;color:#8ef0c2}
.hero .sub{margin:18px 0 26px;font-size:17px;color:#d6efe4;max-width:520px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-meta{display:flex;gap:28px;margin-top:34px;flex-wrap:wrap}
.hero-meta .m b{font-size:26px;display:block;color:#fff}
.hero-meta .m span{font-size:13px;color:#b9e4d0}
/* app mockup */
.mock{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:20px;padding:18px;backdrop-filter:blur(8px);box-shadow:0 30px 70px rgba(0,0,0,.35)}
.mock-win{background:#fff;border-radius:12px;overflow:hidden;color:var(--ink)}
.mock-bar{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid #eef2f0}
.mock-bar i{width:11px;height:11px;border-radius:50%;display:inline-block}
.mock-body{padding:20px}
.mock-status{display:flex;align-items:center;gap:12px;background:#f3faf6;border-radius:10px;padding:14px 16px;margin-bottom:16px}
.mock-status .dot{width:12px;height:12px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 4px rgba(34,197,94,.2)}
.mock-status b{font-size:15px;color:var(--green-dark)}
.mock-row{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:10px}
.mock-node{background:#f7faf8;border:1px solid var(--line);border-radius:9px;padding:11px 13px;font-size:13px}
.mock-node .p{color:var(--muted);font-size:12px}
.mock-node b{color:var(--ink)}
.mock-speed{display:flex;justify-content:space-between;align-items:center;background:var(--ink);color:#fff;border-radius:10px;padding:15px 18px;margin-bottom:14px}
.mock-speed .v{font-size:26px;font-weight:800;color:#8ef0c2}
.mock-speed .lbl{font-size:12px;color:#9fb3aa}
.mock-connect{width:100%;background:linear-gradient(135deg,var(--green),var(--green-dark));color:#fff;border:0;border-radius:9px;padding:13px;font-size:15px;font-weight:700;cursor:pointer}
/* notice */
.notice-bar{background:var(--green-dark);color:#fff}
.notice-bar .container{display:flex;align-items:center;gap:12px;padding:13px 20px;font-size:14px}
.notice-bar .badge{background:var(--accent);color:#fff;padding:3px 10px;border-radius:4px;font-size:12px;font-weight:700;flex-shrink:0}
/* features */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow);transition:.25s}
.card:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(11,61,46,.12);border-color:#cfe8dc}
.card .ico{width:56px;height:56px;border-radius:14px;background:#e7f6ef;display:flex;align-items:center;justify-content:center;margin-bottom:18px;font-size:26px}
.card h3{font-size:19px;margin-bottom:10px;color:var(--green-darker)}
.card p{color:var(--muted);font-size:15px}
/* compare table */
.table-wrap{overflow-x:auto;background:#fff;border-radius:var(--radius);border:1px solid var(--line);box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;min-width:640px}
th,td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line);font-size:15px}
th{background:#f3faf6;color:var(--green-darker);font-weight:700}
td.hl{color:var(--green);font-weight:700}
tr:last-child td{border-bottom:0}
.ok{color:var(--green);font-weight:700}
.no{color:#cbd5d1}
/* news tabs */
.tabs{display:flex;gap:8px;justify-content:center;margin-bottom:32px;flex-wrap:wrap}
.tab{padding:9px 20px;border-radius:30px;border:1.5px solid var(--line);font-size:14px;font-weight:600;color:var(--muted);cursor:pointer}
.tab.active{background:var(--green);color:#fff;border-color:var(--green)}
.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:.25s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.news-card img{height:170px;width:100%;object-fit:cover}
.news-card .nc-body{padding:20px;display:flex;flex-direction:column;flex:1}
.news-card .meta{font-size:12px;color:var(--muted);margin-bottom:8px}
.news-card h3{font-size:16px;line-height:1.5;margin-bottom:10px;color:var(--green-darker)}
.news-card h3 a:hover{color:var(--green)}
.news-card p{font-size:13.5px;color:var(--muted);flex:1}
.news-card .more{color:var(--green);font-weight:600;font-size:13.5px;margin-top:12px}
/* comments */
.comment{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.comment .stars{color:var(--accent);font-size:15px;letter-spacing:2px;margin-bottom:10px}
.comment .txt{color:#33453d;font-size:15px;margin-bottom:16px}
.comment .who{display:flex;align-items:center;gap:12px}
.comment .av{width:42px;height:42px;border-radius:50%;background:#e7f6ef;color:var(--green);display:flex;align-items:center;justify-content:center;font-weight:700}
.comment .who b{font-size:14px}
.comment .who span{font-size:12px;color:var(--muted)}
/* download */
.dl-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.dl-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 18px;text-align:center;transition:.25s}
.dl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe8dc}
.dl-card .ico{font-size:34px;margin-bottom:12px}
.dl-card b{display:block;font-size:15px;margin-bottom:14px}
.dl-card a{display:inline-block;padding:8px 22px;border-radius:20px;background:#e7f6ef;color:var(--green-dark);font-size:13px;font-weight:700}
.dl-card a:hover{background:var(--green);color:#fff}
/* trust */
.trust{background:linear-gradient(160deg,#06301f,#0b4f38);color:#fff}
.trust .section-head h2{color:#fff}
.trust .section-head p{color:#b9e4d0}
.trust-items{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.trust-item{text-align:center;padding:20px}
.trust-item .num{font-size:34px;font-weight:800;color:#8ef0c2}
.trust-item .lbl{font-size:14px;color:#b9e4d0;margin-top:6px}
/* scenarios */
.scn{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.25s}
.scn:hover{border-color:#cfe8dc;box-shadow:var(--shadow)}
.scn .ico{font-size:28px;flex-shrink:0}
.scn h3{font-size:16px;margin-bottom:6px;color:var(--green-darker)}
.scn p{font-size:14px;color:var(--muted)}
/* faq */
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:14px;overflow:hidden}
.faq-q{padding:20px 24px;font-weight:700;font-size:16px;color:var(--green-darker);display:flex;align-items:center;gap:12px;cursor:pointer}
.faq-q .num{width:26px;height:26px;border-radius:50%;background:#e7f6ef;color:var(--green);display:flex;align-items:center;justify-content:center;font-size:13px;flex-shrink:0}
.faq-a{padding:0 24px 22px;color:#3d4f47;font-size:15px}
.faq-a ol{padding-left:20px;margin-top:8px}
.faq-a ol li{margin-bottom:8px;list-style:decimal}
.faq-a ol li b{color:var(--green-dark)}
/* CTA */
.cta{background:linear-gradient(135deg,var(--green),var(--green-dark));color:#fff;text-align:center;padding:70px 0}
.cta h2{font-size:34px;margin-bottom:14px}
.cta p{color:#d6efe4;margin-bottom:26px;font-size:16px}
/* footer */
.footer{background:#052b1e;color:#9fb3aa;padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:36px}
.footer h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer a{display:block;font-size:14px;margin-bottom:10px;color:#9fb3aa}
.footer a:hover{color:#8ef0c2}
.footer .brand{color:#fff;margin-bottom:14px}
.footer .desc{font-size:14px;max-width:300px;line-height:1.8}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:20px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:13px}
/* breadcrumb */
.crumb{background:#fff;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted);padding:14px 0}
.crumb a{color:var(--green)}
.crumb a:hover{text-decoration:underline}
.crumb span{margin:0 8px;color:#cbd5d1}
/* page hero (inner) */
.page-hero{background:linear-gradient(160deg,#06301f,#0b4f38);color:#fff;padding:52px 0;text-align:center}
.page-hero h1{font-size:36px;margin-bottom:12px}
.page-hero p{color:#b9e4d0;font-size:16px}
/* article */
.article-layout{display:grid;grid-template-columns:1fr 320px;gap:36px;align-items:start}
.article{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:40px;box-shadow:var(--shadow)}
.article h1{font-size:30px;line-height:1.4;margin:14px 0;color:var(--green-darker)}
.article .meta{font-size:13px;color:var(--muted);margin-bottom:22px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.article h2{font-size:22px;margin:28px 0 14px;color:var(--green-darker);border-left:4px solid var(--green);padding-left:14px}
.article p{font-size:16px;color:#33453d;margin-bottom:16px;line-height:1.9}
.article img{border-radius:10px;margin:20px 0}
.article figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:-12px;margin-bottom:20px}
.article .toc{background:#f3faf6;border-radius:10px;padding:20px 24px;margin-bottom:24px}
.article .toc b{font-size:15px;color:var(--green-darker)}
.article .toc ol{padding-left:20px;margin-top:10px}
.article .toc li{margin-bottom:6px;font-size:14px}
.article .toc a{color:var(--green-dark)}
.article .toc a:hover{text-decoration:underline}
.article-nav{display:flex;justify-content:space-between;gap:14px;margin-top:32px;padding-top:22px;border-top:1px solid var(--line)}
.article-nav a{color:var(--green);font-size:14px}
.article-nav a:hover{text-decoration:underline}
.sidebar .card{padding:22px}
.sidebar h4{font-size:16px;color:var(--green-darker);margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.sidebar ul li{margin-bottom:11px}
.sidebar ul li a{font-size:14px;color:#33453d;line-height:1.5}
.sidebar ul li a:hover{color:var(--green)}
.sidebar .cat li a{display:flex;justify-content:space-between;color:var(--muted);font-size:14px}
/* sitemap */
.sitemap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.sitemap-grid h3{color:var(--green-darker);margin-bottom:14px;font-size:17px}
.sitemap-grid a{display:block;font-size:14px;color:#33453d;margin-bottom:9px}
.sitemap-grid a:hover{color:var(--green)}
/* 404 */
.notfound{min-height:72vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:60px 20px}
.notfound .code{font-size:120px;font-weight:800;color:var(--green);line-height:1}
.notfound h1{font-size:26px;margin:14px 0}
.notfound p{color:var(--muted);margin-bottom:28px}
/* responsive */
@media(max-width:960px){.hero .container{grid-template-columns:1fr}.grid-3,.news-grid,.trust-items{grid-template-columns:repeat(2,1fr)}.dl-grid{grid-template-columns:repeat(2,1fr)}.grid-2{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.article-layout{grid-template-columns:1fr}.nav-links{display:none}}
@media(max-width:600px){.grid-3,.news-grid,.trust-items,.dl-grid,.footer-grid,.sitemap-grid{grid-template-columns:1fr}.hero h1{font-size:32px}.section-head h2{font-size:27px}}