/* ===================== 绿茶VPN 全局样式 ===================== */
:root{
  --green:#1d9e6f;
  --green-dark:#127a53;
  --green-deep:#0c5b3e;
  --green-light:#e8f5ee;
  --green-bright:#34c78b;
  --text:#22312c;
  --text-light:#5b6f66;
  --bg:#ffffff;
  --bg-alt:#f4faf7;
  --border:#dcebe4;
  --shadow:0 8px 30px rgba(18,122,83,.08);
  --radius:14px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",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}
.container{max-width:1180px;margin:0 auto;padding:0 22px}
.section{padding:74px 0}
.section-alt{background:var(--bg-alt)}
.section-head{text-align:center;max-width:720px;margin:0 auto 48px}
.section-head .kicker{display:inline-block;color:var(--green);font-weight:700;font-size:14px;letter-spacing:2px;margin-bottom:10px}
.section-head h2{font-size:32px;line-height:1.3;margin-bottom:14px;color:var(--green-deep)}
.section-head p{color:var(--text-light);font-size:16px}

/* ---------- 顶部导航 ---------- */
.topbar{background:linear-gradient(90deg,var(--green-deep),var(--green-dark));color:#fff;font-size:13px}
.topbar .container{display:flex;justify-content:space-between;align-items:center;height:38px}
.topbar a{color:#d8f3e6}
.topbar a:hover{color:#fff}
header.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:22px;color:var(--green-deep)}
.logo img{width:36px;height:36px;border-radius:8px}
.logo span{color:var(--green)}
.nav-links{display:flex;gap:6px;align-items:center}
.nav-links a{padding:8px 14px;border-radius:8px;color:var(--text);font-size:15px;font-weight:600}
.nav-links a:hover,.nav-links a.active{color:var(--green);background:var(--green-light)}
.nav-cta{margin-left:8px}
.nav-toggle{display:none}

/* ---------- 按钮（仅 a 标签） ---------- */
.btn{display:inline-block;padding:13px 30px;border-radius:50px;font-weight:700;font-size:16px;text-align:center;transition:.2s}
.btn-primary{background:linear-gradient(135deg,var(--green-bright),var(--green));color:#fff;box-shadow:0 10px 24px rgba(29,158,111,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(29,158,111,.45)}
.btn-outline{border:2px solid var(--green);color:var(--green)}
.btn-outline:hover{background:var(--green);color:#fff}
.btn-light{background:#fff;color:var(--green-dark);box-shadow:0 6px 18px rgba(0,0,0,.12)}
.btn-lg{padding:16px 40px;font-size:18px}

/* ---------- 英雄区 ---------- */
.hero{position:relative;background:linear-gradient(135deg,#0c5b3e 0%,#127a53 55%,#1d9e6f 100%);color:#fff;overflow:hidden;padding:96px 0}
.hero::after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:rgba(255,255,255,.06)}
.hero::before{content:"";position:absolute;left:-80px;bottom:-160px;width:360px;height:360px;border-radius:50%;background:rgba(255,255,255,.05)}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center}
.hero h1{font-size:44px;line-height:1.25;margin-bottom:20px;font-weight:800}
.hero h1 em{font-style:normal;color:#b7f2d5}
.hero p.lead{font-size:18px;color:#d8f3e6;margin-bottom:30px;max-width:540px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:34px;margin-top:38px}
.hero-stats .stat b{display:block;font-size:30px;color:#fff}
.hero-stats .stat span{color:#b7f2d5;font-size:14px}
.hero-art{display:flex;justify-content:center}

/* ---------- 特性卡片 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.feature-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:34px 28px;transition:.25s;box-shadow:var(--shadow)}
.feature-card:hover{transform:translateY(-6px);border-color:var(--green-bright)}
.feature-card .icon{width:60px;height:60px;border-radius:16px;background:var(--green-light);display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.feature-card h3{font-size:20px;margin-bottom:12px;color:var(--green-deep)}
.feature-card p{color:var(--text-light);font-size:15px}

/* ---------- 优势（图文） ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split .txt h2{font-size:30px;margin-bottom:18px;color:var(--green-deep)}
.split .txt p{color:var(--text-light);margin-bottom:16px}
.split .img{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.check-list{list-style:none;margin-top:18px}
.check-list li{padding:9px 0 9px 34px;position:relative;color:var(--text);font-weight:600}
.check-list li::before{content:"✓";position:absolute;left:0;top:9px;width:22px;height:22px;border-radius:50%;background:var(--green-light);color:var(--green);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700}

/* ---------- 数据统计条 ---------- */
.stats-bar{background:var(--green-deep);color:#fff;padding:56px 0}
.stats-bar .container{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stats-bar b{display:block;font-size:40px;color:#b7f2d5}
.stats-bar span{color:#d8f3e6}

/* ---------- 套餐 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.price-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:36px 30px;text-align:center;transition:.25s;position:relative}
.price-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.price-card.featured{border:2px solid var(--green);box-shadow:0 16px 40px rgba(29,158,111,.18)}
.price-card .badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--green);color:#fff;padding:5px 16px;border-radius:20px;font-size:13px;font-weight:700}
.price-card h3{font-size:20px;margin-bottom:8px}
.price-card .amount{font-size:42px;font-weight:800;color:var(--green-deep)}
.price-card .amount small{font-size:16px;color:var(--text-light)}
.price-card ul{list-style:none;margin:22px 0 26px;text-align:left}
.price-card ul li{padding:8px 0;color:var(--text-light);border-bottom:1px dashed var(--border)}
.price-card ul li::before{content:"•";color:var(--green);font-weight:700;margin-right:8px}

/* ---------- FAQ（details 原生折叠） ---------- */
.faq-cat{margin-bottom:40px}
.faq-cat>h3{font-size:22px;color:var(--green-deep);margin-bottom:18px;padding-left:16px;border-left:4px solid var(--green)}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:12px;margin-bottom:14px;overflow:hidden}
.faq-item summary{cursor:pointer;padding:20px 24px;font-weight:700;font-size:17px;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-item summary::after{content:"+";font-size:24px;color:var(--green);transition:.2s}
.faq-item[open] summary::after{content:"–"}
.faq-item .faq-body{padding:0 24px 22px;color:var(--text-light)}
.faq-item .faq-body ol{margin-left:20px}
.faq-item .faq-body ol li{margin-bottom:10px}

/* ---------- 新闻 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.news-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.news-card .thumb{aspect-ratio:16/9;background:var(--green-light);overflow:hidden}
.news-card .thumb img{width:100%;height:100%;object-fit:cover}
.news-card .body{padding:20px 22px;display:flex;flex-direction:column;flex:1}
.news-card .meta{font-size:13px;color:var(--text-light);margin-bottom:10px}
.news-card h3{font-size:18px;margin-bottom:10px;line-height:1.45}
.news-card h3 a{color:var(--green-deep)}
.news-card h3 a:hover{color:var(--green)}
.news-card p{color:var(--text-light);font-size:14px;flex:1}

/* ---------- 文章详情 ---------- */
.article{max-width:820px;margin:0 auto}
.article-header{margin-bottom:34px}
.article-header h1{font-size:34px;line-height:1.35;margin:16px 0;color:var(--green-deep)}
.article-meta{color:var(--text-light);font-size:14px;display:flex;gap:20px;flex-wrap:wrap}
.article-cover{border-radius:var(--radius);overflow:hidden;margin-bottom:30px}
.article-body h2{font-size:24px;margin:34px 0 14px;color:var(--green-deep)}
.article-body h3{font-size:19px;margin:24px 0 10px;color:var(--green-dark)}
.article-body p{color:var(--text-light);margin-bottom:16px}
.article-body ul,.article-body ol{margin:0 0 18px 22px;color:var(--text-light)}
.article-body li{margin-bottom:8px}
.article-body blockquote{border-left:4px solid var(--green);background:var(--green-light);padding:16px 20px;border-radius:8px;margin:20px 0;color:var(--text)}

/* ---------- 页面标题横幅 ---------- */
.page-hero{background:linear-gradient(135deg,var(--green-deep),var(--green));color:#fff;padding:70px 0;text-align:center}
.page-hero h1{font-size:38px;margin-bottom:12px}
.page-hero p{color:#d8f3e6;max-width:640px;margin:0 auto}

/* ---------- 面包屑 ---------- */
.breadcrumb{background:var(--bg-alt);padding:14px 0;font-size:14px;color:var(--text-light)}
.breadcrumb a{color:var(--green)}
.breadcrumb a:hover{text-decoration:underline}

/* ---------- 联系 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px}
.contact-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:30px;margin-bottom:18px}
.contact-card h3{color:var(--green-deep);margin-bottom:10px}

/* ---------- 页脚 ---------- */
footer.site-footer{background:#0c3a2a;color:#cfe7db;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;padding-bottom:40px}
.footer-grid h4{color:#fff;font-size:16px;margin-bottom:16px}
.footer-grid a{display:block;color:#9fc7b4;padding:5px 0;font-size:14px}
.footer-grid a:hover{color:#fff}
.footer-brand p{color:#9fc7b4;margin-top:12px;font-size:14px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0;text-align:center;color:#7fa893;font-size:13px}
.footer-bottom a{color:#b7f2d5}
.footer-bottom a:hover{text-decoration:underline}

/* ---------- 站内地图 ---------- */
.sitemap-list{columns:3;column-gap:40px}
.sitemap-list h3{color:var(--green-deep);margin:0 0 12px;font-size:18px;break-inside:avoid}
.sitemap-list a{display:block;padding:6px 0;color:var(--text-light);break-inside:avoid}
.sitemap-list a:hover{color:var(--green)}

/* ---------- CTA 区 ---------- */
.cta{background:linear-gradient(135deg,var(--green-bright),var(--green));color:#fff;text-align:center;padding:70px 0}
.cta h2{font-size:32px;margin-bottom:14px}
.cta p{color:#e0f7ec;margin-bottom:26px}

/* ---------- 响应式 ---------- */
@media(max-width:960px){
  .hero .container,.split,.contact-grid{grid-template-columns:1fr}
  .feature-grid,.price-grid,.news-grid{grid-template-columns:1fr 1fr}
  .stats-bar .container{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .sitemap-list{columns:2}
  .nav-links{position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;padding:16px;border-bottom:1px solid var(--border);display:none}
  .nav-links.open{display:flex}
  .nav-toggle{display:block;font-size:26px;background:none;border:none;color:var(--green-deep)}
}
@media(max-width:600px){
  .feature-grid,.price-grid,.news-grid{grid-template-columns:1fr}
  .hero h1{font-size:32px}
  .sitemap-list{columns:1}
  .section{padding:50px 0}
}