*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;color:#0F172A;background:#F6F9FC;line-height:1.7;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
:root{
--primary:#06B6D4;--primary-dark:#0891B2;--accent:#10B981;--cyan:#22D3EE;
--g1:linear-gradient(135deg,#06B6D4,#3B82F6);--g2:linear-gradient(135deg,#10B981,#84CC16);--g3:linear-gradient(135deg,#F59E0B,#EC4899);
--gradient:linear-gradient(135deg,#06B6D4,#10B981);
--dark:#08131F;--dark2:#0B1D2E;--dark3:#0F2238;
--light:#F6F9FC;--card:#FFFFFF;--text:#0F172A;--muted:#475569;--border:#E2E8F0;
--radius:16px;--shadow:0 2px 8px rgba(15,23,42,.06);--shadow-lg:0 16px 48px rgba(8,19,31,.14)
}
.container{max-width:1240px;margin:0 auto;padding:0 24px}
.progress-bar{position:fixed;top:0;left:0;height:3px;background:var(--gradient);z-index:10001;width:0;transition:width .15s}
.header{position:fixed;top:0;left:0;right:0;z-index:10000;padding:14px 0;transition:all .3s}
.header.scrolled{background:rgba(8,19,31,.82);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);box-shadow:0 2px 12px rgba(0,0,0,.3);border-bottom:1px solid rgba(255,255,255,.06)}
.header-inner{max-width:1240px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:800;color:#fff;letter-spacing:.5px}
.logo img{height:38px;width:auto}
.logo span em{font-style:normal;background:var(--gradient);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.nav{display:flex;align-items:center;gap:26px;list-style:none}
.nav a{color:#CBD5E1;font-size:15px;font-weight:500;transition:color .2s;white-space:nowrap}
.nav a:hover{color:var(--cyan)}
.nav-cta{display:flex;align-items:center;gap:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;border-radius:10px;font-size:15px;font-weight:600;cursor:pointer;border:none;transition:all .22s;white-space:nowrap;line-height:1}
.btn-primary{background:var(--gradient);color:#fff;box-shadow:0 6px 20px rgba(6,182,212,.4)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(16,185,129,.5)}
.btn-outline{border:2px solid var(--cyan);color:var(--cyan);background:transparent}
.btn-outline:hover{background:rgba(6,182,212,.12)}
.btn-white{background:#fff;color:#0B1D2E;box-shadow:0 6px 20px rgba(0,0,0,.2)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(0,0,0,.28)}
.btn-lg{padding:15px 32px;font-size:17px;border-radius:12px}
.btn-xl{padding:19px 42px;font-size:19px;border-radius:14px}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:8px}
.hamburger span{display:block;width:25px;height:2px;background:#fff;border-radius:2px;transition:all .3s}
.hero{min-height:100vh;display:flex;align-items:center;position:relative;overflow:hidden;padding-top:90px;background:var(--dark)}
.hero-bg{position:absolute;inset:0;background:radial-gradient(ellipse at 25% 40%,rgba(6,182,212,.16) 0%,transparent 60%),radial-gradient(ellipse at 75% 30%,rgba(16,185,129,.14) 0%,transparent 60%),radial-gradient(ellipse at 55% 85%,rgba(59,130,246,.1) 0%,transparent 55%)}
.hero-particles{position:absolute;inset:0}
.hero-particles canvas{width:100%;height:100%}
.hero-inner{max-width:1240px;margin:0 auto;padding:50px 24px;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;position:relative;z-index:1;width:100%}
.hero-text h1{font-size:clamp(38px,4.8vw,62px);font-weight:900;line-height:1.16;margin-bottom:20px;color:#fff}
.hero-text h1 .grad{background:var(--gradient);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero-text p{font-size:18px;color:#94A3B8;margin-bottom:30px;max-width:540px;line-height:1.8}
.hero-stats{display:flex;gap:28px;margin-bottom:30px;flex-wrap:wrap}
.hero-stat{text-align:left}
.hero-stat .num{font-size:34px;font-weight:800;background:var(--g1);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero-stat .label{font-size:13px;color:#94A3B8;margin-top:2px}
.hero-actions{display:flex;gap:16px;margin-bottom:26px;flex-wrap:wrap}
.hero-platforms{display:flex;gap:16px;align-items:center;color:#94A3B8;font-size:14px;flex-wrap:wrap}
.hero-platforms .dot{width:6px;height:6px;border-radius:50%;background:var(--cyan)}
.trust-badges{display:flex;gap:14px;margin-top:26px;flex-wrap:wrap}
.trust-badge{display:flex;align-items:center;gap:8px;font-size:13px;color:#CBD5E1;background:rgba(255,255,255,.06);padding:9px 15px;border-radius:20px;border:1px solid rgba(255,255,255,.1)}
.hero-visual{display:flex;align-items:center;justify-content:center}
.vpn-simulator{width:100%;max-width:400px;background:#0B1D2E;border-radius:24px;box-shadow:0 24px 60px rgba(0,0,0,.5);overflow:hidden;border:1px solid rgba(255,255,255,.1)}
.sim-header{padding:16px 20px;border-bottom:1px solid rgba(255,255,255,.08);display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.03)}
.sim-header .title{font-size:14px;font-weight:600;color:#E2E8F0;display:flex;align-items:center;gap:8px}
.sim-header .logo-mini{width:20px;height:20px;border-radius:6px;background:var(--gradient);display:inline-flex;align-items:center;justify-content:center;font-size:11px;font-weight:800;color:#fff}
.sim-header .status-dot{width:9px;height:9px;border-radius:50%;background:#64748B;transition:background .3s}
.sim-header .status-dot.connected{background:var(--accent);box-shadow:0 0 10px rgba(16,185,129,.7)}
.sim-body{padding:26px 22px;display:flex;flex-direction:column;align-items:center;gap:20px}
.sim-connect-btn{width:126px;height:126px;border-radius:50%;border:none;background:var(--gradient);color:#fff;font-size:18px;font-weight:700;cursor:pointer;transition:all .3s;box-shadow:0 10px 34px rgba(6,182,212,.45);display:flex;align-items:center;justify-content:center;position:relative}
.sim-connect-btn:hover{transform:scale(1.05)}
.sim-connect-btn.connecting{animation:pulse-ring 1.5s infinite;background:var(--g3)}
.sim-connect-btn.connected{background:var(--g2);animation:none}
.sim-connect-btn .countdown{font-size:38px;font-weight:800}
.sim-info{width:100%;display:flex;flex-direction:column;gap:9px}
.sim-info-row{display:flex;justify-content:space-between;align-items:center;padding:9px 14px;background:rgba(255,255,255,.04);border-radius:9px;font-size:13px;color:#CBD5E1}
.sim-info-row .label{color:#94A3B8}
.sim-info-row .value{font-weight:600;color:#E2E8F0}
.sim-info-row .value.green{color:var(--accent)}
.sim-node-select{width:100%;padding:11px 14px;border:1px solid rgba(255,255,255,.12);border-radius:9px;font-size:14px;color:#E2E8F0;background:#08131F;cursor:pointer;outline:none}
.sim-node-select:focus{border-color:var(--cyan)}
@keyframes pulse-ring{0%{box-shadow:0 0 0 0 rgba(236,72,153,.5)}70%{box-shadow:0 0 0 22px rgba(236,72,153,0)}100%{box-shadow:0 0 0 0 rgba(236,72,153,0)}}
.ticker{background:linear-gradient(135deg,rgba(6,182,212,.1),rgba(16,185,129,.1));border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:12px 0;overflow:hidden;background:#fff}
.ticker-inner{display:flex;gap:48px;animation:ticker-scroll 28s linear infinite;white-space:nowrap}
.ticker-item{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--muted)}
@keyframes ticker-scroll{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}
.section{padding:88px 0}
.section.dark{background:var(--dark);color:#E2E8F0}
.section.dark2{background:var(--dark2);color:#E2E8F0}
.section-label{text-align:center;font-size:14px;font-weight:700;color:var(--primary-dark);text-transform:uppercase;letter-spacing:2px;margin-bottom:12px}
.section.dark .section-label,.section.dark2 .section-label{color:var(--cyan)}
.section-title{text-align:center;font-size:clamp(28px,3.4vw,40px);font-weight:800;margin-bottom:16px;color:var(--text)}
.section.dark .section-title,.section.dark2 .section-title{color:#fff}
.section-desc{text-align:center;font-size:18px;color:var(--muted);max-width:640px;margin:0 auto 50px}
.section.dark .section-desc,.section.dark2 .section-desc{color:#94A3B8}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:var(--card);border-radius:var(--radius);padding:34px 28px;border:1px solid var(--border);box-shadow:var(--shadow);transition:all .3s;position:relative;overflow:hidden}
.feature-card:hover{transform:translateY(-7px);box-shadow:var(--shadow-lg)}
.feature-icon{width:58px;height:58px;border-radius:15px;display:flex;align-items:center;justify-content:center;font-size:28px;margin-bottom:20px;color:#fff}
.feature-icon.c1{background:var(--g1)}
.feature-icon.c2{background:var(--g2)}
.feature-icon.c3{background:var(--g3)}
.feature-card h3{font-size:20px;font-weight:700;margin-bottom:10px}
.feature-card p{font-size:15px;color:var(--muted);line-height:1.7}
.announcement-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.announce-card{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);padding:26px;transition:all .3s}
.announce-card:hover{border-color:rgba(6,182,212,.4);transform:translateY(-4px)}
.announce-tag{display:inline-block;font-size:12px;font-weight:700;padding:4px 12px;border-radius:20px;margin-bottom:14px}
.announce-tag.t1{background:rgba(6,182,212,.15);color:var(--cyan)}
.announce-tag.t2{background:rgba(16,185,129,.15);color:#34D399}
.announce-tag.t3{background:rgba(245,158,11,.15);color:#FBBF24}
.announce-card h3{font-size:17px;font-weight:700;color:#fff;margin-bottom:8px}
.announce-card p{font-size:14px;color:#94A3B8;line-height:1.7;margin-bottom:14px}
.announce-card .date{font-size:12px;color:#64748B}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.trust-card{background:var(--card);border-radius:var(--radius);padding:28px 22px;border:1px solid var(--border);text-align:center;transition:all .3s}
.trust-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.trust-card .t-icon{font-size:40px;margin-bottom:14px}
.trust-card h4{font-size:17px;font-weight:700;margin-bottom:6px}
.trust-card p{font-size:13px;color:var(--muted);line-height:1.6}
.scenario-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scenario-card{background:var(--card);border-radius:var(--radius);padding:30px 26px;border:1px solid var(--border);box-shadow:var(--shadow);transition:all .3s}
.scenario-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(6,182,212,.4)}
.scenario-card .s-icon{width:54px;height:54px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:16px;color:#fff}
.scenario-card h3{font-size:19px;font-weight:700;margin-bottom:8px}
.scenario-card p{font-size:14px;color:var(--muted);line-height:1.7}
.news-tabs{display:flex;justify-content:center;gap:10px;margin-bottom:36px;flex-wrap:wrap}
.news-tab{padding:11px 22px;border-radius:10px;border:1px solid var(--border);background:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:all .2s;color:var(--muted)}
.news-tab.active{background:var(--gradient);color:#fff;border-color:transparent}
.news-list{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{background:var(--card);border-radius:var(--radius);border:1px solid var(--border);overflow:hidden;transition:all .3s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.news-card-img{height:150px;background:var(--dark2);display:flex;align-items:center;justify-content:center;font-size:44px;color:var(--cyan)}
.news-card-body{padding:20px;display:flex;flex-direction:column;flex:1}
.news-card-body .cat{font-size:12px;font-weight:700;color:var(--primary-dark);margin-bottom:8px}
.news-card-body h3{font-size:17px;font-weight:700;line-height:1.5;margin-bottom:10px}
.news-card-body h3 a:hover{color:var(--primary-dark)}
.news-card-body p{font-size:14px;color:var(--muted);line-height:1.6;margin-bottom:14px;flex:1}
.news-card-body .meta{font-size:12px;color:#94A3B8}
.download-section .dl-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.dl-card{background:var(--card);border-radius:var(--radius);padding:28px 20px;border:1px solid var(--border);text-align:center;transition:all .3s;display:flex;flex-direction:column;align-items:center;gap:14px}
.dl-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(6,182,212,.4)}
.dl-card .dl-icon{font-size:40px}
.dl-card h4{font-size:17px;font-weight:700}
.dl-card .dl-ver{font-size:12px;color:#94A3B8}
.dl-card .btn{width:100%}
.faq-section{max-width:820px;margin:0 auto}
.faq-category{margin-bottom:34px}
.faq-cat-title{font-size:22px;font-weight:700;margin-bottom:16px;color:var(--text);padding-bottom:10px;border-bottom:2px solid var(--cyan);display:flex;align-items:center;gap:10px}
.section.dark2 .faq-cat-title{color:#fff}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:12px;overflow:hidden}
.section.dark2 .faq-item{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.08)}
.faq-q{padding:18px 20px;font-size:16px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:all .2s}
.section.dark2 .faq-q{color:#E2E8F0}
.faq-q:hover{color:var(--primary-dark)}
.faq-q .arrow{transition:transform .3s;font-size:12px}
.faq-q.open .arrow{transform:rotate(180deg)}
.faq-a{padding:0 20px;max-height:0;overflow:hidden;transition:all .35s;color:var(--muted);font-size:15px;line-height:1.75}
.section.dark2 .faq-a{color:#94A3B8}
.faq-a.open{padding:0 20px 20px;max-height:800px}
.faq-a .step{display:flex;gap:10px;margin-bottom:8px}
.faq-a .step-num{font-weight:700;color:var(--primary-dark);min-width:22px}
.section.dark2 .faq-a .step-num{color:var(--cyan)}
.cta-band{background:var(--gradient);border-radius:24px;padding:56px 40px;text-align:center;color:#fff;position:relative;overflow:hidden}
.cta-band::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 20% 20%,rgba(255,255,255,.18),transparent 60%)}
.cta-band h2{font-size:clamp(26px,3vw,38px);font-weight:800;margin-bottom:14px;position:relative}
.cta-band p{font-size:17px;opacity:.95;margin-bottom:26px;position:relative}
.cta-band .btn-white{position:relative}
.footer{background:var(--dark);color:#94A3B8;padding:60px 0 30px}
.footer-inner{max-width:1240px;margin:0 auto;padding:0 24px;display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1.4fr;gap:40px}
.footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer a{color:#94A3B8;text-decoration:none;font-size:14px;display:block;margin-bottom:9px;transition:color .2s}
.footer a:hover{color:var(--cyan)}
.footer-brand p{font-size:14px;line-height:1.8;margin:14px 0}
.footer-brand .footer-logo{display:flex;align-items:center;gap:10px}
.footer-brand .footer-logo img{height:32px}
.footer-brand .footer-logo span{color:#fff;font-size:20px;font-weight:800}
.footer-note{margin-top:18px;padding:12px 16px;background:rgba(245,158,11,.12);border:1px solid rgba(245,158,11,.28);border-radius:9px;font-size:13px;color:#FCD34D;line-height:1.7}
.footer-bottom{max-width:1240px;margin:40px auto 0;padding:24px 24px 0;border-top:1px solid rgba(255,255,255,.1);text-align:center;font-size:13px;color:#64748B}
.footer-bottom a{color:#94A3B8;display:inline}
.sticky-cta{position:fixed;bottom:24px;right:24px;z-index:9999}
.sticky-cta .btn-circle{width:58px;height:58px;border-radius:50%;background:var(--gradient);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:24px;box-shadow:0 8px 26px rgba(6,182,212,.5);animation:float 2.2s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-7px)}}
.page-hero{background:var(--dark);padding:130px 0 70px;text-align:center;position:relative;overflow:hidden}
.page-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 50% 30%,rgba(6,182,212,.16),transparent 60%),radial-gradient(ellipse at 20% 70%,rgba(16,185,129,.12),transparent 55%)}
.page-hero .container{position:relative}
.page-hero h1{font-size:clamp(30px,4vw,46px);font-weight:900;color:#fff;margin-bottom:14px}
.page-hero h1 .grad{background:var(--gradient);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.page-hero p{font-size:17px;color:#94A3B8;max-width:640px;margin:0 auto}
.breadcrumb{max-width:1240px;margin:24px auto 0;padding:0 24px;font-size:14px;color:#94A3B8}
.breadcrumb a{color:var(--cyan)}
.breadcrumb a:hover{text-decoration:underline}
.news-detail-body{max-width:800px;margin:0 auto;background:var(--card);border-radius:var(--radius);padding:48px;border:1px solid var(--border);box-shadow:var(--shadow)}
.news-detail-body .nd-meta{display:flex;gap:16px;align-items:center;font-size:13px;color:#94A3B8;margin:18px 0 26px;flex-wrap:wrap}
.news-detail-body .nd-meta .tag{background:rgba(6,182,212,.12);color:var(--primary-dark);font-weight:700;padding:3px 12px;border-radius:20px}
.news-detail-body h2{font-size:24px;font-weight:800;margin:30px 0 14px;color:var(--text);border-left:4px solid var(--cyan);padding-left:14px}
.news-detail-body p{font-size:16px;color:#334155;line-height:1.9;margin-bottom:16px;text-align:justify}
.news-detail-body .nd-img{width:100%;border-radius:12px;margin:22px 0;background:var(--dark2);display:flex;align-items:center;justify-content:center;color:#fff;font-size:15px;min-height:180px}
.news-detail-body blockquote{border-left:4px solid var(--accent);background:rgba(16,185,129,.06);padding:16px 20px;border-radius:8px;margin:20px 0;font-size:15px;color:#475569;font-style:italic}
.nd-nav{display:flex;justify-content:space-between;gap:16px;margin-top:32px;padding-top:22px;border-top:1px solid var(--border);flex-wrap:wrap}
.nd-nav a{color:var(--primary-dark);font-size:14px;font-weight:600}
.nd-nav a:hover{text-decoration:underline}
.nd-back{display:inline-flex;margin-top:24px;color:var(--muted);font-size:14px;font-weight:600}
.nd-back:hover{color:var(--primary-dark)}
.sitemap-wrap{max-width:1000px;margin:0 auto}
.sitemap-col{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.sitemap-col .sm-block{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.sitemap-col h3{font-size:18px;font-weight:700;margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid var(--cyan)}
.sitemap-col a{display:block;font-size:14px;color:var(--muted);padding:6px 0;transition:color .2s}
.sitemap-col a:hover{color:var(--primary-dark)}
.page-404{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--dark);text-align:center;padding:40px}
.page-404 .inner{max-width:520px}
.page-404 .code{font-size:120px;font-weight:900;background:var(--gradient);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;line-height:1}
.page-404 h1{font-size:28px;color:#fff;margin:18px 0 12px}
.page-404 p{font-size:16px;color:#94A3B8;margin-bottom:26px;line-height:1.8}
.page-404 .count{color:var(--cyan);font-weight:800}
@media(max-width:1024px){.features-grid,.scenario-grid{grid-template-columns:repeat(2,1fr)}.hero-inner{grid-template-columns:1fr;gap:44px}.trust-grid{grid-template-columns:repeat(2,1fr)}.dl-grid{grid-template-columns:repeat(3,1fr)}.news-list{grid-template-columns:repeat(2,1fr)}.footer-inner{grid-template-columns:repeat(3,1fr)}.sitemap-col{grid-template-columns:1fr 1fr}.announcement-grid{grid-template-columns:1fr}}
@media(max-width:768px){.nav{display:none;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:rgba(8,19,31,.97);backdrop-filter:blur(20px);padding:20px;gap:18px;border-bottom:1px solid rgba(255,255,255,.08)}.nav.open{display:flex}.hamburger{display:flex}.nav-cta{display:none}.features-grid,.scenario-grid,.trust-grid,.dl-grid,.news-list,.footer-inner,.sitemap-col{grid-template-columns:1fr}.announcement-grid{grid-template-columns:1fr}.hero-stats{gap:20px}.hero-stat .num{font-size:28px}.news-detail-body{padding:24px}}