/* ===== 贝塔IP 站点样式 ===== */
:root{
  --brand:#7C3AED;--brand2:#A855F7;--brand-grad:linear-gradient(135deg,#7C3AED,#A855F7);
  --ink:#1A1A2E;--muted:#6B7280;--line:#E5E7EB;--bg:#F7F5FF;
  --radius:14px;--shadow:0 4px 24px rgba(124,58,237,.08);
}
*{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",sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:10px;font-size:15px;font-weight:600;cursor:pointer;transition:.2s;border:1px solid transparent;line-height:1.4}
.btn-sm{padding:8px 18px;font-size:14px}
.btn-primary{background:var(--brand-grad);color:#fff}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(124,58,237,.3)}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand)}
.btn-glass{background:rgba(255,255,255,.2);color:#fff;border-color:rgba(255,255,255,.3)}
.btn-glass:hover{background:rgba(255,255,255,.3)}
.btn-block{width:100%}

/* ===== 头部 ===== */
.header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(247,245,255,.85);backdrop-filter:blur(12px);border-bottom:1px solid rgba(124,58,237,.08)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800}
.brand .mark{width:36px;height:36px;border-radius:10px;overflow:hidden;background:var(--brand-grad);display:grid;place-items:center;flex:none}
.brand .mark img{width:100%;height:100%;object-fit:cover}
.nav{display:flex;gap:28px}
.nav a{font-size:15px;font-weight:500;color:#4B5563;transition:.2s}
.nav a:hover,.nav a.active{color:var(--brand)}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:6px}
.nav-toggle svg{width:24px;height:24px;stroke:var(--ink)}

/* ===== Hero ===== */
.hero{padding:140px 0 80px;background:linear-gradient(180deg,#F7F5FF 0%,#EDE9FE 100%);position:relative;overflow:hidden}
.hero .container{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero h1{font-size:48px;font-weight:800;line-height:1.2;color:#2D1B69;margin-bottom:20px}
.hero h1 .sub{display:block;font-size:48px}
.hero .lead{font-size:17px;color:var(--muted);margin-bottom:32px;max-width:520px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:40px;margin-top:48px}
.hero-stats .stat b{font-size:28px;color:#2D1B69;display:block}
.hero-stats .stat span{font-size:13px;color:var(--muted)}
.hero-visual{position:relative}
.mock-app{background:#fff;border-radius:16px;box-shadow:0 20px 60px rgba(124,58,237,.15);overflow:hidden}
.mock-titlebar{background:#F3F4F6;padding:12px 16px;display:flex;gap:6px;align-items:center}
.mock-titlebar .dot{width:10px;height:10px;border-radius:50%}
.mock-titlebar .dot.red{background:#EF4444}
.mock-titlebar .dot.yellow{background:#F59E0B}
.mock-titlebar .dot.green{background:#10B981}
.mock-titlebar .mock-title{margin-left:10px;font-size:12px;color:var(--muted)}
.mock-body{padding:20px}
.mock-status{display:flex;align-items:center;gap:12px;padding:14px;background:#F5F3FF;border-radius:10px;margin-bottom:14px}
.mock-status-dot{width:10px;height:10px;border-radius:50%;background:#10B981;box-shadow:0 0 0 4px rgba(16,185,129,.15)}
.mock-status-label{font-size:14px;font-weight:700;color:#166534}
.mock-status-ip{font-size:12px;color:var(--muted)}
.mock-delay{margin-left:auto;font-size:13px;font-weight:600;color:#166534;background:#DCFCE7;padding:3px 10px;border-radius:20px}
.mock-city-list{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.mock-city{display:flex;align-items:center;gap:8px;padding:10px 12px;border-radius:8px;font-size:13px;color:#4B5563}
.mock-city.active{background:#EDE9FE;color:var(--brand);font-weight:600}
.city-dot{width:6px;height:6px;border-radius:50%;background:#D1D5DB}
.mock-city.active .city-dot{background:var(--brand)}
.city-ping{margin-left:auto;font-size:12px;color:var(--muted)}
.mock-city.active .city-ping{color:var(--brand)}
.mock-btn{text-align:center;padding:12px;background:var(--brand-grad);color:#fff;border-radius:10px;font-weight:600;font-size:14px;cursor:pointer}

/* ===== 区块通用 ===== */
.section{padding:80px 0}
.section-head{text-align:center;margin-bottom:50px}
.section-head .kicker{display:inline-block;font-size:13px;font-weight:600;color:var(--brand);background:#EDE9FE;padding:4px 14px;border-radius:20px;margin-bottom:12px}
.section-head h2{font-size:36px;font-weight:800;color:#2D1B69;margin-bottom:10px}
.section-head .sub{font-size:16px;color:var(--muted)}

/* ===== 核心功能 ===== */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:#fff;border-radius:var(--radius);padding:32px;box-shadow:var(--shadow);transition:.25s}
.feature-card:hover{transform:translateY(-4px)}
.feature-card .icon{width:48px;height:48px;border-radius:12px;background:var(--brand-grad);display:grid;place-items:center;margin-bottom:18px}
.feature-card .icon svg{width:24px;height:24px;stroke:#fff}
.feature-card h3{font-size:18px;font-weight:700;margin-bottom:10px}
.feature-card p{font-size:14px;color:var(--muted)}

/* ===== 五大优势 ===== */
.adv{background:linear-gradient(180deg,#fff 0%,#F7F5FF 100%)}
.adv-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.adv-list{display:flex;flex-direction:column;gap:20px}
.adv-item{display:flex;gap:16px;align-items:flex-start}
.adv-item .num{width:36px;height:36px;border-radius:10px;background:var(--brand-grad);color:#fff;display:grid;place-items:center;font-weight:700;flex:none}
.adv-item h4{font-size:17px;margin-bottom:4px}
.adv-item p{font-size:14px;color:var(--muted)}
.adv-panel{background:#fff;border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.adv-panel-head{margin-bottom:20px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.adv-panel-head h4{font-size:18px;color:#2D1B69}
.adv-scene{display:flex;flex-direction:column;gap:18px}
.scene-item{display:flex;gap:14px;align-items:flex-start}
.scene-icon{width:44px;height:44px;border-radius:10px;background:#F5F3FF;display:grid;place-items:center;flex:none}
.scene-icon svg{width:22px;height:22px;stroke:var(--brand)}
.scene-item b{font-size:15px;display:block;margin-bottom:3px}
.scene-item p{font-size:13px;color:var(--muted);line-height:1.5}

/* ===== 服务 ===== */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.svc-card{background:#fff;border-radius:var(--radius);padding:32px;box-shadow:var(--shadow);text-align:center}
.svc-icon{width:52px;height:52px;border-radius:14px;background:#F5F3FF;display:grid;place-items:center;margin:0 auto 16px}
.svc-icon svg{width:26px;height:26px}
.svc-card h3{font-size:17px;margin-bottom:8px}
.svc-card p{font-size:14px;color:var(--muted)}

/* ===== 统计 ===== */
.stats{display:grid;grid-template-columns:repeat(6,1fr);gap:20px;text-align:center;padding:48px 0}
.stats .item b{font-size:32px;color:var(--brand);display:block}
.stats .item span{font-size:13px;color:var(--muted)}

/* ===== 资讯 ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.25s}
.news-card:hover{transform:translateY(-4px)}
.news-card .cover{height:160px;display:grid;place-items:center;position:relative;overflow:hidden}
.news-card .cover svg{width:44px;height:44px;color:rgba(255,255,255,.85)}
.news-card .cover-0{background:linear-gradient(135deg,#7C3AED,#A855F7)}
.news-card .cover-1{background:linear-gradient(135deg,#6366F1,#8B5CF6)}
.news-card .cover-2{background:linear-gradient(135deg,#8B5CF6,#D946EF)}
.cover-cat{position:absolute;top:12px;left:12px;background:rgba(255,255,255,.25);color:#fff;font-size:11px;padding:3px 10px;border-radius:20px}
.news-card .body{padding:18px}
.news-card h3{font-size:15px;margin-bottom:6px;line-height:1.4}
.news-card .summary{font-size:12.5px;color:var(--muted);margin-bottom:10px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card .meta{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted)}
.news-card .read-more{color:var(--brand);font-weight:600}

/* ===== 下载横幅 ===== */
.download{background:linear-gradient(135deg,#7C3AED,#A855F7);padding:32px 0;color:#fff}
.download .container{display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap}
.download h2{font-size:24px;margin-bottom:6px}
.download p{font-size:14px;opacity:.9}
.download-actions{display:flex;gap:14px}
.download-actions .btn{padding:12px 32px;border-radius:999px;font-size:15px;white-space:nowrap;writing-mode:horizontal-tb;text-orientation:mixed}

/* ===== 页脚 ===== */
.footer{background:#1A1A2E;color:#8A98B8;padding:44px 0 0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px;padding-bottom:32px}
.foot-brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:#fff;margin-bottom:12px}
.foot-brand .mark{width:32px;height:32px;border-radius:10px;overflow:hidden;flex:none}
.foot-brand .mark img{width:100%;height:100%;object-fit:cover}
.foot-col p{font-size:13.5px;line-height:1.85;max-width:330px}
.foot-col h4{color:#fff;font-size:15px;margin-bottom:14px}
.foot-col ul li{margin-bottom:9px;list-style:none}
.foot-col ul a{font-size:13.5px;transition:.2s}
.foot-col ul a:hover{color:#fff;padding-left:4px}
.foot-links{border-top:1px solid rgba(255,255,255,.08);padding:18px 0 6px}
.foot-links h5{color:#fff;font-size:14px;margin-bottom:10px}
.foot-link-list{display:flex;flex-wrap:wrap;gap:8px 22px}
.foot-link-list a{font-size:13px;color:rgba(255,255,255,.6)}
.foot-disclaimer{padding:12px 0 4px;font-size:12px;color:rgba(255,255,255,.45);line-height:1.75;text-align:center}
.foot-bottom{border-top:1px solid rgba(255,255,255,.08);padding:14px 0;text-align:center;font-size:12.5px}
.foot-bottom a{color:rgba(255,255,255,.55)}
.foot-bottom a:hover{color:#fff}

/* ===== 内页头 ===== */
.page-head{padding:120px 0 50px;background:linear-gradient(180deg,#F7F5FF,#EDE9FE)}
.page-head h1{font-size:36px;font-weight:800;color:#2D1B69;margin-bottom:8px}
.page-head p{color:var(--muted);font-size:16px}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:12px}
.breadcrumb a{color:var(--brand)}

/* ===== 下载页 ===== */
.download-cards{display:grid;grid-template-columns:1fr 1fr;gap:24px;max-width:800px;margin:0 auto}
.dl-card{background:#fff;border-radius:var(--radius);padding:36px;text-align:center;box-shadow:var(--shadow)}
.dl-card .dl-icon{width:64px;height:64px;border-radius:16px;background:var(--brand-grad);display:grid;place-items:center;margin:0 auto 18px}
.dl-card .dl-icon svg{width:32px;height:32px;fill:#fff}
.dl-card h3{font-size:20px;margin-bottom:10px}
.dl-card .dl-desc{font-size:14px;color:var(--muted);margin-bottom:20px}
.dl-actions{display:flex;flex-direction:column;gap:10px}
.dl-muted{opacity:.7}
.dl-notice{max-width:800px;margin:36px auto 0;background:#fff;border-radius:var(--radius);padding:24px;display:flex;gap:16px;box-shadow:var(--shadow)}
.dl-notice svg{width:24px;height:24px;stroke:var(--brand);flex:none}
.dl-notice p{font-size:14px;color:var(--muted)}

/* ===== 套餐页 ===== */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:960px;margin:0 auto}
.price-card{background:#fff;border-radius:var(--radius);padding:32px;box-shadow:var(--shadow);position:relative;transition:.25s;display:flex;flex-direction:column}
.price-card:hover{transform:translateY(-4px)}
.price-card.recommend{border:2px solid var(--brand)}
.price-badge{position:absolute;top:-12px;right:20px;background:var(--brand-grad);color:#fff;font-size:12px;padding:4px 12px;border-radius:20px}
.price-head{text-align:center;margin-bottom:24px}
.price-amount{font-size:42px;font-weight:800;color:#2D1B69}
.price-amount .yen{font-size:24px}
.price-name{font-size:18px;font-weight:700;margin:4px 0}
.price-period{font-size:13px;color:var(--muted)}
.price-features{list-style:none;margin-bottom:24px;flex:1}
.price-features li{display:flex;align-items:center;gap:10px;padding:8px 0;font-size:14px}
.price-features li svg{width:18px;height:18px;stroke:var(--brand);flex:none}
.pricing-note{max-width:800px;margin:36px auto 0;background:#fff;border-radius:var(--radius);padding:24px;display:flex;gap:16px;box-shadow:var(--shadow)}
.pricing-note svg{width:24px;height:24px;stroke:var(--brand);flex:none}
.pricing-note p{font-size:14px;color:var(--muted)}

/* ===== 帮助中心 ===== */
.help-topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;flex-wrap:wrap;gap:16px}
.help-search{display:flex;gap:10px}
.help-search input{padding:10px 16px;border:1px solid var(--line);border-radius:10px;font-size:14px;width:260px;outline:none}
.help-search input:focus{border-color:var(--brand)}
.help-cats{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}
.help-cats a{padding:6px 16px;border-radius:20px;font-size:13px;background:#fff;border:1px solid var(--line);transition:.2s}
.help-cats a.active,.help-cats a:hover{background:var(--brand);color:#fff;border-color:var(--brand)}
.help-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.help-card{background:#fff;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:.25s}
.help-card:hover{transform:translateY(-3px)}
.help-card h3{font-size:16px;margin-bottom:8px;line-height:1.4}
.help-card p{font-size:13px;color:var(--muted);margin-bottom:12px}
.help-card .meta{font-size:12px;color:var(--muted)}
.pager{display:flex;gap:6px;justify-content:center;margin-top:32px}
.pager a,.pager span{padding:8px 14px;border-radius:8px;font-size:14px;background:#fff;border:1px solid var(--line)}
.pager .current{background:var(--brand);color:#fff;border-color:var(--brand)}

/* ===== 文章详情 ===== */
.article{max-width:800px;margin:0 auto}
.article-content{background:#fff;border-radius:var(--radius);padding:40px;box-shadow:var(--shadow);font-size:15px;line-height:1.9}
.article-content h2{margin:24px 0 12px}
.article-content img{border-radius:8px;margin:16px 0}
.article-nav{display:flex;justify-content:space-between;gap:20px;margin-top:32px;max-width:800px;margin-left:auto;margin-right:auto}
.article-nav .nav-item{flex:1;background:#fff;border-radius:var(--radius);padding:16px 20px;box-shadow:var(--shadow)}
.article-nav .nav-right{text-align:right}
.article-nav .nav-label{display:block;font-size:12px;color:var(--muted);margin-bottom:6px}
.article-nav a{color:var(--brand);font-size:14px;font-weight:500;text-decoration:none}
.article-nav a:hover{text-decoration:underline}
.article-nav .nav-none{font-size:14px;color:#ccc}

/* ===== 响应式 ===== */
@media(max-width:960px){
  .nav{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;padding:20px;box-shadow:0 8px 24px rgba(0,0,0,.1)}
  .nav.open{display:flex}
  .nav-toggle{display:block}
  .hero .container{grid-template-columns:1fr;gap:40px}
  .hero h1,.hero h1 .sub{font-size:32px}
  .features-grid,.svc-grid,.news-grid,.help-grid{grid-template-columns:1fr}
  .adv-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(3,1fr)}
  .pricing-grid{grid-template-columns:1fr;max-width:420px}
  .download-cards{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .download .container{flex-direction:column;text-align:center}
}