/* ProtonVPN 官网 style - protonvpnz.com.cn */
:root{
  --navy:#0b1f3a;--navy2:#10294a;--blue:#1a63ff;--cyan:#00b8d9;--green:#12b886;
  --bg:#ffffff;--bg-alt:#f4f7fb;--text:#14263d;--muted:#5c6f8a;--line:#e3eaf3;
  --radius:16px;--shadow:0 10px 30px rgba(11,31,58,.08);--shadow-lg:0 20px 50px rgba(11,31,58,.14);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Roboto,Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.7;font-size:16px}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
ul{list-style:none}
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:72px 0}
.section-alt{background:var(--bg-alt)}
.sec-tag{display:inline-block;color:var(--blue);font-weight:700;font-size:13px;letter-spacing:.12em;text-transform:uppercase;margin-bottom:10px}
h2.sec-title{font-size:34px;line-height:1.25;font-weight:800;color:var(--navy);margin-bottom:14px}
.sec-sub{color:var(--muted);max-width:720px;font-size:16px}
.center{text-align:center}
.center .sec-sub{margin:0 auto}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;border-radius:12px;padding:14px 28px;font-size:16px;transition:.2s;border:2px solid transparent;cursor:pointer}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:#0f4fd6;transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-cyan{background:var(--cyan);color:#05222b}
.btn-cyan:hover{background:#0098b3;transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--navy);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue)}
.btn-lg{padding:16px 36px;font-size:18px}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:9px}

/* 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:68px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--navy)}
.logo img{width:30px;height:30px;border-radius:7px}
.logo span b{color:var(--blue)}
.nav{display:flex;align-items:center;gap:26px}
.nav a{font-weight:600;color:var(--text);font-size:15px}
.nav a:hover{color:var(--blue)}
.nav .lang{border:1px solid var(--line);border-radius:8px;padding:6px 14px;font-weight:700}
.nav .lang:hover{border-color:var(--blue);color:var(--blue)}

/* Hero */
.hero{background:linear-gradient(135deg,#0b1f3a 0%,#10294a 45%,#123a66 100%);color:#fff;padding:70px 0 90px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-120px;top:-120px;width:480px;height:480px;border-radius:50%;background:radial-gradient(circle,rgba(0,184,217,.35),transparent 70%)}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:50px;align-items:center;position:relative;z-index:2}
.hero h1{font-size:44px;line-height:1.2;font-weight:900;margin:16px 0}
.hero h1 .hl{color:var(--cyan)}
.hero p.lead{color:#c3d4ea;font-size:18px;max-width:540px;margin-bottom:28px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:36px;margin-top:34px}
.hero-stats .st b{display:block;font-size:26px;color:#fff}
.hero-stats .st span{color:#9db4cf;font-size:13px}

/* 客户端模拟器 */
.device{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:20px;padding:22px;backdrop-filter:blur(6px)}
.window{background:#0d1c30;border:1px solid rgba(255,255,255,.1);border-radius:14px;overflow:hidden;box-shadow:0 24px 60px rgba(0,0,0,.4)}
.win-bar{display:flex;align-items:center;gap:8px;padding:12px 16px;background:#0a1626;border-bottom:1px solid rgba(255,255,255,.08)}
.win-bar .dot{width:12px;height:12px;border-radius:50%}
.win-bar .dot.r{background:#ff5f57}.win-bar .dot.y{background:#febc2e}.win-bar .dot.g{background:#28c840}
.win-bar .ttl{color:#8fa3bf;font-size:12px;margin-left:10px}
.win-body{padding:22px}
.status-pill{display:flex;align-items:center;gap:9px;background:rgba(18,184,134,.14);border:1px solid rgba(18,184,134,.4);color:#5ce6b8;border-radius:100px;padding:8px 16px;font-weight:700;font-size:14px;width:max-content}
.status-pill .pulse{width:9px;height:9px;border-radius:50%;background:#28c840;box-shadow:0 0 0 0 rgba(40,200,64,.7);animation:pulse 1.6s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(40,200,64,.6)}70%{box-shadow:0 0 0 10px rgba(40,200,64,0)}100%{box-shadow:0 0 0 0 rgba(40,200,64,0)}}
.server-row{display:flex;align-items:center;justify-content:space-between;background:#12233d;border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:14px 16px;margin:16px 0}
.server-row .fl{color:#c3d4ea;font-size:13px}
.server-row .fl b{color:#fff;display:block;font-size:15px}
.server-row .flg{width:32px;height:32px;border-radius:8px;background:linear-gradient(135deg,#1a63ff,#00b8d9);display:flex;align-items:center;justify-content:center;color:#fff;font-size:14px;font-weight:800}
.connect-btn{display:flex;align-items:center;justify-content:center;width:100%;background:linear-gradient(135deg,#1a63ff,#00b8d9);color:#fff;font-weight:800;font-size:18px;border-radius:14px;padding:16px;margin-bottom:16px}
.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.metric{background:#12233d;border-radius:10px;padding:12px;text-align:center}
.metric b{display:block;color:#fff;font-size:16px}
.metric span{color:#7e92ad;font-size:12px}

/* 功能卡片 */
.grid{display:grid;gap:24px}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.2s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent}
.card .ico{width:52px;height:52px;border-radius:13px;background:linear-gradient(135deg,#1a63ff,#00b8d9);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.card .ico svg{width:26px;height:26px;fill:#fff}
.card h3{font-size:19px;margin-bottom:10px;color:var(--navy)}
.card p{color:var(--muted);font-size:15px}
.card.alt{background:var(--bg-alt)}

/* 公告区 */
.notice{background:linear-gradient(135deg,#00b8d9,#12b886);color:#fff;border-radius:var(--radius);padding:30px 34px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.notice h3{font-size:22px}
.notice p{color:#eafffb}

/* 信任背书 */
.trust{display:flex;gap:40px;flex-wrap:wrap;justify-content:center;align-items:center}
.trust .t{text-align:center}
.trust .t b{display:block;font-size:30px;color:var(--navy)}
.trust .t span{color:var(--muted);font-size:13px}

/* 场景 */
.scene{display:flex;gap:14px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin-bottom:12px}
.scene .n{width:34px;height:34px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;flex-shrink:0}
.scene b{color:var(--navy)}
.scene p{color:var(--muted);font-size:14px}

/* 对比表 */
table{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden;font-size:14px}
th,td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line)}
thead th{background:var(--navy);color:#fff;font-weight:700}
tbody tr:nth-child(even){background:var(--bg-alt)}
td.yes{color:var(--green);font-weight:700}
td.no{color:#c0392b}
.table-scroll{overflow-x:auto;border-radius:12px;border:1px solid var(--line)}

/* Tab 新闻 */
.tabs{display:flex;gap:8px;margin-bottom:22px;flex-wrap:wrap}
.tabs a{padding:9px 20px;border-radius:100px;border:1px solid var(--line);font-weight:600;font-size:14px;color:var(--muted)}
.tabs a.on{background:var(--blue);color:#fff;border-color:var(--blue)}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin-bottom:18px;transition:.2s}
.news-card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.news-card .cat{color:var(--blue);font-weight:700;font-size:12px;text-transform:uppercase;letter-spacing:.08em}
.news-card h3{font-size:19px;margin:8px 0;color:var(--navy)}
.news-card .meta{color:var(--muted);font-size:13px}
.news-card p{color:var(--muted);font-size:14px;margin-top:8px}

/* 评论 */
.review{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;margin-bottom:18px}
.review .rhead{display:flex;align-items:center;gap:12px;margin-bottom:10px}
.review .av{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#1a63ff,#00b8d9);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800}
.review .nm b{display:block;color:var(--navy)}
.review .nm span{color:var(--muted);font-size:13px}
.stars{color:#f5a623}
.review p{color:var(--text);font-size:15px}

/* 下载 */
.dl-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;text-align:center;transition:.2s}
.dl-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.dl-card .ico{width:60px;height:60px;border-radius:16px;margin:0 auto 16px;background:linear-gradient(135deg,#1a63ff,#00b8d9);display:flex;align-items:center;justify-content:center}
.dl-card .ico svg{width:30px;height:30px;fill:#fff}
.dl-card h3{font-size:18px;color:var(--navy);margin-bottom:6px}
.dl-card p{color:var(--muted);font-size:13px;margin-bottom:16px}

/* FAQ */
details.faq{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden}
details.faq summary{display:flex;justify-content:space-between;align-items:center;padding:18px 22px;cursor:pointer;font-weight:700;color:var(--navy);list-style:none}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";font-size:24px;color:var(--blue);font-weight:400;transition:.2s}
details.faq[open] summary::after{transform:rotate(45deg)}
details.faq .ans{padding:0 22px 20px;color:var(--muted);font-size:15px}
details.faq .ans ol{padding-left:20px;margin-top:8px}
details.faq .ans ol li{margin-bottom:8px}

/* 底部CTA */
.cta{background:linear-gradient(135deg,#0b1f3a,#123a66);color:#fff;border-radius:24px;padding:60px;text-align:center}
.cta h2{font-size:34px;margin-bottom:14px}
.cta p{color:#c3d4ea;margin-bottom:26px}

/* 页脚 */
.footer{background:var(--navy);color:#c3d4ea;padding:60px 0 30px;font-size:14px}
.footer .fgrid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer h4{color:#fff;margin-bottom:16px;font-size:16px}
.footer a{display:block;color:#9db4cf;margin-bottom:9px}
.footer a:hover{color:var(--cyan)}
.footer .bot{border-top:1px solid rgba(255,255,255,.12);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;color:#7e92ad}

/* 面包屑 */
.crumb{font-size:13px;color:var(--muted);padding:18px 0;border-bottom:1px solid var(--line);margin-bottom:36px}
.crumb a{color:var(--blue)}
.crumb a:hover{text-decoration:underline}

/* 文章页 */
.article-layout{display:grid;grid-template-columns:1fr 320px;gap:40px;align-items:start}
.article h1{font-size:32px;line-height:1.3;color:var(--navy);margin-bottom:14px}
.article .meta{color:var(--muted);font-size:14px;margin-bottom:22px}
.article h2{font-size:24px;color:var(--navy);margin:34px 0 14px;padding-left:14px;border-left:4px solid var(--blue)}
.article p{color:var(--text);margin-bottom:16px;font-size:16px}
.article figure{margin:22px 0}
.article figcaption{font-size:13px;color:var(--muted);margin-top:8px;text-align:center}
.article blockquote{border-left:4px solid var(--cyan);background:var(--bg-alt);padding:16px 20px;border-radius:0 10px 10px 0;margin:20px 0;color:var(--muted)}
.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{color:var(--navy);margin-bottom:14px;font-size:16px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.sidebar .box a{display:block;color:var(--text);font-size:14px;margin-bottom:11px;line-height:1.5}
.sidebar .box a:hover{color:var(--blue)}
.sidebar .cat{display:inline-block;background:var(--bg-alt);border-radius:100px;padding:5px 14px;font-size:13px;color:var(--muted);margin:0 6px 8px 0}
.prevnext{display:flex;justify-content:space-between;gap:16px;margin:40px 0;border-top:1px solid var(--line);padding-top:26px}
.prevnext a{flex:1;background:var(--bg-alt);border-radius:12px;padding:16px 20px;font-size:14px;color:var(--muted)}
.prevnext a b{display:block;color:var(--navy);font-size:16px;margin-top:4px}
.prevnext a:hover{background:#eaf1fb}

/* 语言切换提示 */
.langbar{background:var(--cyan);color:#05222b;text-align:center;padding:9px 16px;font-size:14px;font-weight:600}
.langbar a{text-decoration:underline;font-weight:800}

/* 纯CSS Tab（新闻3Tab） */
.newstabs input{display:none}
.newstabs .tabrow{display:flex;gap:8px;margin-bottom:22px;flex-wrap:wrap}
.newstabs .tabrow label{padding:9px 20px;border-radius:100px;border:1px solid var(--line);font-weight:600;font-size:14px;color:var(--muted);cursor:pointer;transition:.2s}
.newstabs .panel{display:none}
#nt1:checked~.panel.p1,#nt2:checked~.panel.p2,#nt3:checked~.panel.p3{display:block}
#nt1:checked~.tabrow label[for="nt1"],#nt2:checked~.tabrow label[for="nt2"],#nt3:checked~.tabrow label[for="nt3"]{background:var(--blue);color:#fff;border-color:var(--blue)}
@media(max-width:960px){
  .hero-inner{grid-template-columns:1fr}
  .g3,.g4{grid-template-columns:1fr 1fr}
  .g2{grid-template-columns:1fr}
  .article-layout{grid-template-columns:1fr}
  .sidebar{position:static}
  .footer .fgrid{grid-template-columns:1fr 1fr}
  .nav{display:none}
}
@media(max-width:600px){.g3,.g4{grid-template-columns:1fr}h2.sec-title{font-size:26px}.hero h1{font-size:32px}}