:root{
  --gradient: linear-gradient(90deg, #3558F2 0%, #7B4EF1 50%, #B84DDA 100%);
  --blue:#2980FE;
  --blue-dark:#1768E8;
  --text:#1f2937;
  --muted:#657287;
  --light:#f5f7fb;
  --line:#e6ebf2;
  --card:#ffffff;
  --soft:#eef5ff;
  --shadow:0 18px 45px rgba(31, 41, 55, .08);
  --radius:28px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:#fff;line-height:1.7;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.container,.nav-container{width:min(1180px,calc(100% - 32px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.nav-container{display:flex;align-items:center;justify-content:space-between;min-height:72px;gap:18px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:#10223d;white-space:nowrap}.logo-img{width:42px;height:42px;border-radius:12px;object-fit:cover}.logo-text{font-size:20px;letter-spacing:.2px}
.site-nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap;justify-content:flex-end}.site-nav a{font-size:14px;color:#536176;padding:9px 12px;border-radius:999px}.site-nav a:hover,.site-nav a.active{background:#eef5ff;color:var(--blue)}
.nav-toggle{display:none}.nav-toggle-label{display:none;flex-direction:column;gap:5px;cursor:pointer}.nav-toggle-label span{width:24px;height:2px;background:#23324a;border-radius:2px}
.section{padding:72px 0}.section-soft{background:var(--light)}.section-head{max-width:760px;margin:0 auto 32px;text-align:center}.section-head.left{text-align:left;margin-left:0}.eyebrow,.badge{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;background:#eef5ff;color:var(--blue);font-weight:700;font-size:13px}.section-head h2,.split-content h2{font-size:clamp(28px,4vw,44px);line-height:1.18;margin:14px 0 12px}.section-head p,.split-content p,.page-summary{color:var(--muted);margin:0}
.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 26px;background:var(--blue);color:#fff!important;border-radius:999px;font-weight:800;box-shadow:0 14px 26px rgba(41,128,254,.24);transition:.2s ease;border:0}.download-btn:hover{background:var(--blue-dark);transform:translateY(-1px)}
.link-more{color:var(--blue);font-weight:800}.muted{color:var(--muted)}
.connection-workspace-hero{background:var(--gradient);padding:72px 0 58px;color:#fff;position:relative;overflow:hidden}.connection-workspace-hero:before{content:"";position:absolute;inset:auto -120px -180px auto;width:420px;height:420px;background:rgba(255,255,255,.18);filter:blur(20px);border-radius:50%}.hero-grid{position:relative;display:grid;grid-template-columns:1.02fr .98fr;gap:42px;align-items:center}.hero-copy h1{font-size:clamp(34px,6vw,62px);line-height:1.08;margin:16px 0}.hero-copy p{font-size:18px;color:rgba(255,255,255,.88);max-width:660px}.hero-tags{display:flex;gap:10px;flex-wrap:wrap;margin:22px 0 28px}.hero-tags span{background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.24);padding:8px 12px;border-radius:999px;font-size:13px}.hero-visual{position:relative}.hero-device{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);padding:24px;border-radius:34px;box-shadow:0 30px 80px rgba(16,24,40,.18)}.hero-device img{margin:auto;border-radius:26px}.status-panel{position:absolute;right:0;bottom:18px;width:min(320px,78%);background:#fff;color:var(--text);border-radius:24px;padding:18px;box-shadow:var(--shadow)}.status-panel strong{display:block;font-size:18px}.status-row{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);padding-top:10px;margin-top:10px;color:var(--muted);font-size:13px}.status-dot{display:inline-block;width:9px;height:9px;border-radius:50%;background:#2dd47b;margin-right:8px}.floating-labels{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}.floating-labels span{background:#f3f7ff;color:#38567d;border-radius:14px;padding:9px 10px;font-size:13px;font-weight:700}
.quick-task-entries{display:grid;grid-template-columns:1fr;gap:16px}.quick-task-card,.capability-card,.feature-card,.scenario-card,.risk-card,.faq-item,.info-card,.page-card{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:0 10px 28px rgba(31,41,55,.04)}.quick-task-card .tag,.capability-card .tag{display:inline-block;color:var(--blue);font-weight:800;font-size:13px;margin-bottom:8px}.quick-task-card h3,.capability-card h3,.feature-card h3,.scenario-card h3,.risk-card h3,.info-card h3,.page-card h3{margin:0 0 8px;font-size:20px}.quick-task-card p,.capability-card p,.feature-card p,.scenario-card p,.risk-card p,.info-card p,.page-card p{color:var(--muted);margin:0 0 12px}
.connection-capability-overview{display:grid;grid-template-columns:1fr;gap:16px}.capability-card.large{background:linear-gradient(180deg,#fff,#f6f9ff)}.split-section{display:grid;grid-template-columns:1fr;gap:30px;align-items:center}.split-panel{background:#fff;border:1px solid var(--line);border-radius:34px;padding:28px;box-shadow:var(--shadow)}.split-panel.soft{background:#f8fbff}.split-image{border-radius:28px;background:#f1f5ff;padding:20px}.point-list{display:grid;gap:12px;margin:22px 0}.point-list span{display:block;background:#f7f9fc;border:1px solid var(--line);border-radius:16px;padding:12px 14px;color:#42536a}.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.tag-row span{background:#eef5ff;color:#256adf;border-radius:999px;padding:7px 11px;font-size:13px;font-weight:700}.feature-grid,.scenario-grid,.risk-grid,.info-grid,.faq-list{display:grid;grid-template-columns:1fr;gap:16px}.risk-card{border-left:4px solid var(--blue)}.process-steps{display:grid;gap:16px}.step-card{display:grid;grid-template-columns:46px 1fr;gap:14px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:20px}.step-number{width:46px;height:46px;border-radius:16px;background:var(--gradient);color:#fff;display:grid;place-items:center;font-weight:900}.step-card h3{margin:0 0 6px}.step-card p{margin:0 0 8px;color:var(--muted)}
.encrypted-tunnel-section .feature-card{background:#fbfdff}.route-optimization-section,.connection-checkup-section{background:#f7f9ff}.device-protection-section .split-panel{background:linear-gradient(180deg,#fff,#f8fbff)}.data-boundary-section .info-card{min-height:176px}.cta-section{padding:70px 0;background:var(--gradient);color:#fff;text-align:center}.cta-box{max-width:760px;margin:auto}.cta-box h2{font-size:clamp(28px,4vw,42px);line-height:1.2;margin:0 0 12px}.cta-box p{color:rgba(255,255,255,.86);margin:0 auto 24px}.page-hero{padding:64px 0 28px;background:linear-gradient(180deg,#f7faff,#fff)}.page-hero h1{font-size:clamp(32px,5vw,52px);line-height:1.15;margin:18px 0 12px}.page-layout{display:grid;grid-template-columns:1fr;gap:24px;align-items:start;padding-bottom:72px}.article-panel{background:#fff;border:1px solid var(--line);border-radius:30px;padding:26px;box-shadow:var(--shadow)}.article-panel h2{margin:0 0 12px;font-size:26px}.article-panel p{color:var(--muted)}.side-panel{background:#f8fbff;border:1px solid var(--line);border-radius:26px;padding:22px}.side-panel a{display:block;color:var(--blue);font-weight:800;margin-top:10px}.check-list{display:grid;gap:12px;margin-top:18px}.check-list li{list-style:none;background:#fff;border:1px solid var(--line);border-radius:16px;padding:12px 14px;color:#42536a}.download-center{text-align:center;margin-top:26px}.faq-item h3{margin:0 0 8px}.faq-item p{margin:0;color:var(--muted)}.download-steps{counter-reset:step;display:grid;gap:14px}.download-steps li{list-style:none;counter-increment:step;background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 16px 16px 62px;position:relative}.download-steps li:before{content:counter(step);position:absolute;left:16px;top:16px;width:32px;height:32px;border-radius:12px;background:#eef5ff;color:var(--blue);display:grid;place-items:center;font-weight:900}.site-footer{background:#182236;color:#dbe4f2;padding:56px 0 0}.footer-grid{display:grid;grid-template-columns:1fr;gap:24px}.footer-brand{font-size:24px;font-weight:900;color:#fff;margin-bottom:8px}.site-footer h3{color:#fff;margin:0 0 10px}.site-footer p{color:#aebbd0;margin:0}.site-footer a{display:block;color:#cfd8e6;margin:7px 0}.footer-bottom{text-align:center;border-top:1px solid rgba(255,255,255,.1);padding:20px;margin-top:34px;color:#aebbd0;font-size:14px}
@media (min-width:640px){.quick-task-entries,.feature-grid,.scenario-grid,.risk-grid,.info-grid,.faq-list{grid-template-columns:repeat(2,1fr)}.process-steps{grid-template-columns:repeat(2,1fr)}.connection-capability-overview{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
@media (min-width:920px){.quick-task-entries{grid-template-columns:repeat(4,1fr)}.connection-capability-overview{grid-template-columns:1.2fr 1fr 1fr}.capability-card.large{grid-row:span 2}.split-section{grid-template-columns:1fr 1fr}.feature-grid.three,.scenario-grid.three,.risk-grid.three,.info-grid.three{grid-template-columns:repeat(3,1fr)}.page-layout{grid-template-columns:minmax(0,1fr) 320px}.article-panel{padding:34px}.hero-grid{grid-template-columns:1.05fr .95fr}.process-steps{grid-template-columns:repeat(3,1fr)}}
@media (max-width:860px){.nav-toggle-label{display:flex}.site-nav{position:absolute;left:16px;right:16px;top:72px;display:none;flex-direction:column;align-items:stretch;background:#fff;border:1px solid var(--line);border-radius:22px;padding:14px;box-shadow:var(--shadow)}.site-nav a{padding:12px 14px}.nav-toggle:checked ~ .site-nav{display:flex}.hero-grid{grid-template-columns:1fr}.status-panel{position:relative;width:100%;margin-top:16px;bottom:auto}.connection-workspace-hero{padding:48px 0}.section{padding:52px 0}.hero-copy p{font-size:16px}.download-btn{width:100%;max-width:320px}.cta-section .download-btn,.hero-copy .download-btn{width:100%;}.page-hero{padding-top:46px}.container,.nav-container{width:min(100% - 24px,1180px)}}