:root{--primary:#0d9488;--primary-2:#14b8a6;--secondary:#4f46e5;--accent:#f59e0b;--ink:#0f172a;--muted:#64748b;--line:#e2e8f0;--bg:#f8fafc;--card:#ffffff;--grad:linear-gradient(135deg,#0d9488 0%,#4f46e5 100%)}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
h1,h2,h3,h4{font-family:"Songti SC","Noto Serif SC","STSong",Georgia,serif;line-height:1.3;font-weight:700}
p{color:var(--muted)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 28px;border-radius:10px;font-weight:600;font-size:15px;cursor:pointer;transition:.2s;border:none}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 22px rgba(13,148,136,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(13,148,136,.36)}
.btn-ghost{background:#fff;color:var(--primary);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--primary);background:#f0fdfa}
.tag{display:inline-block;padding:6px 14px;border-radius:999px;background:#f0fdfa;color:var(--primary);font-size:13px;font-weight:600;letter-spacing:.5px}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
header.header{position:sticky;top:0;z-index:50;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:70px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;font-family:"Songti SC","Noto Serif SC",Georgia,serif}
.brand img{width:34px;height:34px;border-radius:8px}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{font-size:15px;color:var(--muted);font-weight:500;transition:.2s}
.nav-links a:hover,.nav-links a.active{color:var(--primary)}
.nav-cta{padding:10px 20px;border-radius:9px;background:var(--grad);color:#fff!important;font-weight:600;font-size:14px}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.nav-toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.2s}
section{padding:72px 0}
.sec-head{text-align:center;max-width:720px;margin:0 auto 48px}
.sec-head h2{font-size:34px;margin:12px 0 10px}
.sec-head p{font-size:16px}
.hero{position:relative;overflow:hidden;padding:90px 0 60px}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 20% 20%,rgba(13,148,136,.12),transparent 45%),radial-gradient(circle at 80% 30%,rgba(79,70,229,.12),transparent 45%);z-index:0}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center}
.hero-visual{display:flex;justify-content:center}
.chat-mockup{width:100%;max-width:470px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 26px 60px rgba(15,23,42,.18);overflow:hidden;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif}
.chat-window{display:grid;grid-template-columns:172px 1fr;height:430px}
.chat-sidebar{background:#f8fafc;border-right:1px solid var(--line);display:flex;flex-direction:column}
.chat-sidebar-head{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;font-weight:700;font-size:14px;color:var(--ink);border-bottom:1px solid var(--line)}
.chat-sidebar-head .plus{width:20px;height:20px;display:flex;align-items:center;justify-content:center;background:var(--grad);color:#fff;border-radius:6px;font-size:14px;line-height:1}
.chat-search{margin:10px 12px;padding:7px 10px;background:#fff;border:1px solid var(--line);border-radius:8px;font-size:12px;color:#94a3b8;display:flex;align-items:center;gap:6px}
.chat-item{display:flex;align-items:center;gap:9px;padding:10px 12px;cursor:pointer;transition:.15s}
.chat-item.active{background:#eef2ff;box-shadow:inset 3px 0 0 var(--primary)}
.chat-item .avatar{width:34px;height:34px;border-radius:50%;color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;flex-shrink:0}
.av1{background:linear-gradient(135deg,#0d9488,#14b8a6)}
.av2{background:linear-gradient(135deg,#4f46e5,#818cf8)}
.av3{background:linear-gradient(135deg,#f59e0b,#fbbf24)}
.av4{background:linear-gradient(135deg,#f43f5e,#fb7185)}
.chat-item-body{display:flex;flex-direction:column;min-width:0;flex:1}
.chat-item-body b{font-size:13px;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chat-item-body small{font-size:11px;color:#94a3b8;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chat-badge{background:#f43f5e;color:#fff;font-size:11px;min-width:16px;height:16px;border-radius:8px;display:flex;align-items:center;justify-content:center;padding:0 4px}
.chat-main{display:flex;flex-direction:column;min-width:0}
.chat-head{display:flex;align-items:center;gap:10px;padding:12px 14px;border-bottom:1px solid var(--line)}
.chat-head .avatar{width:34px;height:34px;border-radius:50%;color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;flex-shrink:0}
.chat-head b{font-size:14px;display:block;color:var(--ink)}
.chat-head small{font-size:11px;color:#10b981}
.chat-head-icons{margin-left:auto;display:flex;gap:10px;color:#94a3b8}
.chat-body{flex:1;padding:16px 14px;display:flex;flex-direction:column;gap:12px;overflow:hidden;background:#fbfcfe}
.msg{display:flex;flex-direction:column;max-width:80%}
.msg.received{align-self:flex-start;align-items:flex-start}
.msg.sent{align-self:flex-end;align-items:flex-end}
.msg .bubble{padding:9px 12px;border-radius:12px;font-size:13px;line-height:1.5}
.msg.received .bubble{background:#fff;border:1px solid var(--line);border-top-left-radius:4px;color:var(--ink)}
.msg.sent .bubble{background:var(--grad);color:#fff;border-top-right-radius:4px}
.msg .time{font-size:10px;color:#cbd5e1;margin-top:3px}
.chat-input{display:flex;align-items:center;gap:10px;padding:12px 14px;border-top:1px solid var(--line)}
.chat-input .ph{flex:1;padding:8px 12px;background:#f1f5f9;border-radius:8px;font-size:13px;color:#94a3b8}
.chat-send{background:var(--grad);color:#fff;padding:8px 16px;border-radius:8px;font-size:13px;font-weight:600}
.hero-badge{display:inline-block;padding:8px 18px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--primary);font-size:14px;font-weight:600;box-shadow:0 4px 14px rgba(0,0,0,.05)}
.hero h1{font-size:54px;margin:22px 0 18px}
.hero .lead{font-size:18px;max-width:640px;line-height:1.9}
.hero-actions{display:flex;gap:16px;margin:30px 0;flex-wrap:wrap}
.hero-meta{display:flex;gap:44px;margin:30px 0 44px;flex-wrap:wrap}
.hero-meta b{display:block;font-size:26px;font-family:"Songti SC",Georgia,serif;color:var(--ink)}
.hero-meta div{font-size:14px;color:var(--muted)}
.hero-showcase{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:40px}
.showcase-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:0 6px 20px rgba(0,0,0,.04)}
.showcase-card svg{width:34px;height:34px;stroke:var(--primary);margin-bottom:14px}
.showcase-card h3{font-size:18px;margin-bottom:8px}
.stats{background:var(--grad);color:#fff;padding:44px 0}
.stats .container{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stats .num{font-size:32px;font-weight:700;font-family:"Songti SC",Georgia,serif}
.stats .lbl{font-size:14px;opacity:.9}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px;transition:.25s;box-shadow:0 4px 16px rgba(0,0,0,.03)}
.card:hover{transform:translateY(-5px);box-shadow:0 14px 30px rgba(0,0,0,.08);border-color:var(--primary-2)}
.card svg{width:40px;height:40px;stroke:var(--primary);margin-bottom:16px}
.card h3{font-size:20px;margin-bottom:10px}
.card p{font-size:15px}
.ico-wrap{width:52px;height:52px;border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;background:#f0fdfa}
.ico-wrap.green{background:#ecfdf5}.ico-wrap.green svg{stroke:#10b981}
.ico-wrap.indigo{background:#eef2ff}.ico-wrap.indigo svg{stroke:#4f46e5}
.ico-wrap.amber{background:#fffbeb}.ico-wrap.amber svg{stroke:#f59e0b}
.ico-wrap.rose{background:#fff1f2}.ico-wrap.rose svg{stroke:#f43f5e}
.ico-wrap.sky{background:#f0f9ff}.ico-wrap.sky svg{stroke:#0ea5e9}
.announce{background:#fffdf7}
.notice-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.notice{background:#fff;border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:12px;padding:20px}
.notice .d{font-size:13px;color:var(--accent);font-weight:600}
.notice h4{font-size:16px;margin:8px 0}
.notice h4 a{color:var(--ink)}
.notice h4 a:hover{color:var(--primary)}
.notice p{font-size:14px}
.trust{background:#fff}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.trust-item{text-align:center;padding:24px}
.trust-item svg{width:40px;height:40px;stroke:var(--primary);margin-bottom:12px}
.trust-item h4{font-size:17px;margin-bottom:6px}
.trust-item p{font-size:13px}
.news-tabs{display:flex;justify-content:center;gap:12px;margin-bottom:36px;flex-wrap:wrap}
.news-tab{padding:10px 22px;border-radius:999px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:14px;font-weight:600;color:var(--muted);transition:.2s}
.news-tab.active,.news-tab:hover{background:var(--grad);color:#fff;border-color:transparent}
.news-panel{display:none}
.news-panel.active{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:.2s}
.news-card:hover{transform:translateY(-4px);box-shadow:0 12px 28px rgba(0,0,0,.08)}
.news-card .thumb{height:150px;background:var(--grad);display:flex;align-items:center;justify-content:center;color:#fff;font-size:44px}
.news-card .body{padding:20px}
.news-card .meta{font-size:12px;color:var(--muted);margin-bottom:8px}
.news-card h4{font-size:17px;margin-bottom:8px}
.news-card h4 a{color:var(--ink)}
.news-card h4 a:hover{color:var(--primary)}
.news-card p{font-size:14px}
.biz{background:linear-gradient(180deg,#f8fafc 0%,#eef2ff 100%)}
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:0 8px 24px rgba(0,0,0,.04)}
table{width:100%;border-collapse:collapse;min-width:720px}
th,td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--line);font-size:15px}
th{background:#f8fafc;font-weight:700;font-size:14px;color:var(--ink)}
tr:last-child td{border-bottom:none}
td.check{color:var(--primary);font-weight:700;text-align:center}
td.cross{color:#cbd5e1;text-align:center}
.dl-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.dl-card{text-align:center}
.dl-card .plat{font-size:40px;margin-bottom:10px}
.dl-card h3{font-size:18px;margin-bottom:8px}
.dl-card p{font-size:14px;margin-bottom:10px}
.dl-card .ver{display:block;font-size:12px;color:var(--muted);margin-bottom:16px}
.dl-card .btn{width:100%}
.faq{background:#fff}
.faq-item{border:1px solid var(--line);border-radius:14px;margin-bottom:14px;overflow:hidden;background:#fff}
.faq-q{width:100%;text-align:left;padding:20px 24px;background:#fff;border:none;cursor:pointer;font-size:16px;font-weight:600;display:flex;justify-content:space-between;align-items:center;color:var(--ink)}
.faq-q:hover{color:var(--primary)}
.faq-q .arrow{transition:.25s;color:var(--primary);font-size:20px}
.faq-item.open .faq-q .arrow{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a .inner{padding:0 24px 22px;font-size:15px;color:var(--muted)}
.faq-a ol{padding-left:20px;margin-top:10px}
.faq-a ol li{margin-bottom:6px}
.cta{background:var(--grad);color:#fff;text-align:center;padding:80px 0}
.cta h2{color:#fff;font-size:38px;margin-bottom:16px}
.cta p{color:rgba(255,255,255,.9);margin-bottom:30px}
.cta .btn{background:#fff;color:var(--primary)}
.cta .btn:hover{transform:translateY(-2px)}
footer{background:#0f172a;color:#94a3b8;padding:56px 0 28px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:40px}
.foot-grid h4{color:#fff;font-size:16px;margin-bottom:16px}
.foot-grid a{display:block;color:#94a3b8;font-size:14px;margin-bottom:10px}
.foot-grid a:hover{color:#fff}
.foot-brand{font-size:14px;line-height:1.8}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;text-align:center;font-size:13px}
.breadcrumb{background:#fff;border-bottom:1px solid var(--line)}
.breadcrumb nav{padding:16px 0}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--muted)}
.breadcrumb li{display:flex;align-items:center}
.breadcrumb li+li::before{content:"/";margin-right:8px;color:#cbd5e1}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb li[aria-current]{font-weight:700;color:var(--primary)}
.page-hero{background:var(--grad);color:#fff;padding:56px 0;text-align:center}
.page-hero h1{color:#fff;font-size:40px;margin-bottom:12px}
.page-hero p{color:rgba(255,255,255,.9)}
.article{max-width:820px;margin:0 auto;padding:56px 24px}
.article-head{margin-bottom:32px}
.article-head .cat{display:inline-block;padding:5px 12px;border-radius:6px;background:#f0fdfa;color:var(--primary);font-size:13px;font-weight:600}
.article-head h1{font-size:32px;margin:14px 0 12px}
.article-head .meta{color:var(--muted);font-size:14px}
.article-body h2{font-size:24px;margin:32px 0 14px;padding-left:14px;border-left:4px solid var(--primary)}
.article-body p{font-size:16px;margin-bottom:18px;line-height:1.9}
.article-body img{border-radius:12px;margin:24px auto;box-shadow:0 6px 20px rgba(0,0,0,.06)}
.article-nav{display:flex;justify-content:space-between;gap:16px;margin-top:48px;padding-top:24px;border-top:1px solid var(--line)}
.article-nav a{color:var(--primary);font-size:15px}
.article-nav a:hover{text-decoration:underline}
.article-back{display:block;text-align:center;margin-top:24px}
.article-back a{color:var(--muted);font-size:14px}
.article-back a:hover{color:var(--primary)}
.notfound{min-height:70vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:60px 24px}
.notfound h1{font-size:100px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.notfound h2{font-size:28px;margin:20px 0 12px}
.notfound p{color:var(--muted);margin-bottom:28px}
.notfound .count{font-size:14px;color:var(--muted);margin-top:16px}
.sitemap{max-width:960px;margin:0 auto;padding:56px 24px}
.sitemap h2{font-size:24px;margin:32px 0 16px}
.sitemap ul{list-style:none}
.sitemap li{margin-bottom:10px}
.sitemap a{color:var(--primary);font-size:15px}
.sitemap a:hover{text-decoration:underline}
@media(max-width:992px){.grid,.news-panel.active,.dl-grid{grid-template-columns:repeat(2,1fr)}.hero-showcase{grid-template-columns:1fr}.hero-inner{grid-template-columns:1fr}.stats .container{grid-template-columns:repeat(2,1fr)}.trust-grid{grid-template-columns:repeat(2,1fr)}.notice-list{grid-template-columns:1fr}.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.nav-links{display:none;position:absolute;top:70px;left:0;right:0;background:#fff;flex-direction:column;padding:20px;gap:16px;border-bottom:1px solid var(--line)}.nav-links.open{display:flex}.nav-toggle{display:flex}.hero h1{font-size:36px}.chat-window{grid-template-columns:1fr;height:400px}.chat-sidebar{display:none}.grid,.news-panel.active,.dl-grid,.stats .container,.trust-grid,.foot-grid{grid-template-columns:1fr}.sec-head h2{font-size:28px}}