/* rVPN shared styles */
  :root{
    --ink:#0B0E14;
    --paper:#FAFAF8;
    --panel:#F1F1ED;
    --line:#DEDED7;
    --line-strong:#C7C7BE;
    --text:#1B1F27;
    --text-muted:#6B7280;
    --accent:#3D5A80;
    --accent-deep:#2C4361;
    --accent-light:#EAF1F8;
    --accent-soft:#5B85B7;
    --ok:#16895F;
    --mono-bg:#11151C;
    --mono-text:#D7DBE2;
    --display: 'Archivo', -apple-system, sans-serif;
    --sans: 'Inter', -apple-system, sans-serif;
    --mono: 'JetBrains Mono', monospace;
  }
  *{margin:0;padding:0;box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    font-family: var(--sans);
    color: var(--text);
    background: var(--paper);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }
  .wrap{max-width:1120px;margin:0 auto;padding:0 32px;}

  /* ---------- Header ---------- */
  header{
    border-bottom:1px solid var(--line);
    position: sticky; top:0; background: rgba(250,250,248,0.92);
    backdrop-filter: blur(8px); z-index: 50;
  }
  .nav{display:flex;align-items:center;justify-content:space-between;height:76px;}
  .logo{font-family:var(--display); font-weight:800; font-size:21px; letter-spacing:-0.01em; color:var(--ink); text-decoration:none;}
  .navlinks{display:flex;gap:36px;align-items:center;}
  .navlinks a{font-size:14px; color:var(--text-muted); text-decoration:none; font-weight:500; transition:color .15s;}
  .navlinks a:hover{color:var(--ink);}
  .nav-cta{
    background:var(--ink); color:#fff; padding:10px 20px; border-radius:4px;
    font-size:14px; font-weight:500; text-decoration:none; transition:background .15s;
  }
  .nav-cta:hover{background:var(--accent-deep);}

  /* ---------- Hero ---------- */
  .hero{
    padding:100px 0 0; border-bottom:1px solid var(--line); overflow:hidden;
    background: linear-gradient(180deg, var(--accent-light) 0%, var(--paper) 65%);
  }
  .hero-grid{display:grid; grid-template-columns:1.1fr 0.9fr; gap:48px; align-items:center; padding-bottom:80px;}
  .eyebrow{
    display:inline-flex; align-items:center; gap:8px;
    font-family:var(--mono); font-size:12px; letter-spacing:0.08em;
    color:var(--ok); border:1px solid var(--line-strong); border-radius:100px;
    background:#fff;
    padding:6px 14px; margin-bottom:32px; text-transform:uppercase;
  }
  .eyebrow::before{content:''; width:6px; height:6px; border-radius:50%; background:var(--ok); display:inline-block;}
  h1{
    font-family:var(--display); font-weight:800; font-size:clamp(40px,5.4vw,64px);
    line-height:1.05; letter-spacing:-0.02em; margin-bottom:28px;
  }
  h1 .accent{color:var(--accent);}
  .hero-sub{
    font-size:18px; color:var(--text-muted); max-width:560px; margin-bottom:40px; line-height:1.7;
  }
  .hero-actions{display:flex; gap:16px; flex-wrap:wrap; align-items:center; margin-bottom:40px;}
  .btn-primary{
    background:var(--ink); color:#fff; padding:14px 28px; border-radius:4px;
    font-size:15px; font-weight:500; text-decoration:none; transition:background .15s;
  }
  .btn-primary:hover{background:var(--accent-deep);}
  .btn-secondary{
    border:1px solid var(--line-strong); color:var(--text); padding:14px 28px; border-radius:4px;
    font-size:15px; font-weight:500; text-decoration:none; transition:border-color .15s, color .15s;
    background:#fff;
  }
  .btn-secondary:hover{border-color:var(--ink); color:var(--ink);}

  .install-line{
    font-family:var(--mono); font-size:13px; background:var(--mono-bg); color:var(--mono-text);
    padding:16px 20px; border-radius:6px; display:flex; align-items:center; justify-content:space-between;
    max-width:560px; gap:16px; overflow-x:auto;
  }
  .install-line .copy{color:#8B98A8; flex-shrink:0; font-size:11px; letter-spacing:0.05em; text-transform:uppercase;}

  /* ---------- Hero code panel ---------- */
  .code-panel-wrap{
    perspective:1400px; padding:20px 0;
  }
  .code-panel{
    background:var(--mono-bg); border-radius:10px; overflow:hidden;
    transform: rotate(3deg) rotateY(-6deg);
    box-shadow: 0 24px 60px -20px rgba(11,14,20,0.35);
    transition: transform .4s ease;
    border:1px solid #232C38;
  }
  .code-panel:hover{transform: rotate(0.5deg) rotateY(-2deg) translateY(-4px);}
  .code-panel-head{
    display:flex; align-items:center; justify-content:space-between;
    padding:12px 18px; border-bottom:1px solid #232C38;
  }
  .code-panel-head .dots{display:flex; gap:6px;}
  .code-panel-head .dots span{width:10px; height:10px; border-radius:50%; display:inline-block; background:#3A4554;}
  .code-panel-head .filename{font-family:var(--mono); font-size:12px; color:#8B98A8; letter-spacing:0.04em;}
  .code-panel pre{
    margin:0; padding:22px 20px; font-family:var(--mono); font-size:12.5px; line-height:1.7;
    color:var(--mono-text); overflow-x:auto;
  }
  .code-panel .c-kw{color:var(--accent-soft);}
  .code-panel .c-type{color:#9FE1CB;}
  .code-panel .c-com{color:#5F6B7A;}
  .code-panel .c-str{color:#F0997B;}
  @media (max-width: 900px){
    .hero-grid{grid-template-columns:1fr; gap:0;}
    .code-panel-wrap{padding-top:0;}
    .code-panel{transform:none;}
    .code-panel:hover{transform:none;}
    h1{font-size:clamp(36px,9vw,52px);}
  }

  /* ---------- Section shells ---------- */
  section{padding:96px 0;}
  section.alt{background:var(--panel); border-top:1px solid var(--line); border-bottom:1px solid var(--line);}
  .section-head{max-width:680px; margin-bottom:64px;}
  .section-head.wide{max-width:none;}
  .kicker{
    font-family:var(--mono); font-size:12px; letter-spacing:0.1em; text-transform:uppercase;
    color:var(--accent); margin-bottom:16px; display:block;
  }
  h2{font-family:var(--display); font-weight:800; font-size:clamp(28px,4vw,42px); letter-spacing:-0.02em; margin-bottom:16px;}
  .section-head p{color:var(--text-muted); font-size:17px; line-height:1.7; max-width:680px;}
  .section-head.wide p{max-width:60ch;}

  /* ---------- Circuit diagram ---------- */
  .circuit-wrap{
    border:1px solid var(--line); border-radius:8px; background:#fff;
    padding:8px 8px 0; margin-bottom:64px; overflow:hidden;
  }
  .circuit-wrap svg{display:block; width:100%; height:auto;}
  .circuit-legend{
    display:flex; gap:28px; flex-wrap:wrap; padding:18px 24px; border-top:1px solid var(--line);
    font-family:var(--mono); font-size:12px; color:var(--text-muted);
  }
  .circuit-legend span{display:inline-flex; align-items:center; gap:8px;}
  .circuit-legend i{width:18px; height:2px; display:inline-block; border-radius:1px;}
  .leg-live{background:var(--accent);}
  .leg-drop{background:var(--line-strong);}
  .leg-decoy{background:#C98A4A; }

  /* ---------- Feature grid (2x2) ---------- */
  .feature-grid{
    display:grid; grid-template-columns:1fr 1fr; gap:1px;
    background:var(--line); border:1px solid var(--line); border-radius:10px; overflow:hidden;
  }
  .feature-card{
    background:#fff; padding:36px; position:relative; transition:background .15s;
  }
  .feature-card:hover{background:var(--accent-light);}
  .feature-card .f-stage{
    font-family:var(--mono); font-size:12px; letter-spacing:0.06em; text-transform:uppercase;
    color:var(--accent); display:block; margin-bottom:18px;
  }
  .feature-card h3{
    font-family:var(--display); font-size:21px; font-weight:700; letter-spacing:-0.01em;
    line-height:1.25; margin-bottom:10px;
  }
  .feature-card p{color:var(--text-muted); font-size:15px; line-height:1.75;}
  .feature-card .f-mark{
    position:absolute; top:32px; right:36px; font-family:var(--display); font-weight:800;
    font-size:40px; color:var(--accent-light); line-height:1; transition:color .15s;
  }
  .feature-card:hover .f-mark{color:#dbe6f1;}
  @media (max-width: 760px){
    .feature-grid{grid-template-columns:1fr;}
    .feature-card{padding:28px;}
    .feature-card .f-mark{display:none;}
  }

  /* ---------- Table ---------- */
  .spec-table{width:100%; border-collapse:collapse; font-size:14.5px; background:#fff; border:1px solid var(--line); border-radius:8px; overflow:hidden;}
  .spec-table th, .spec-table td{padding:16px 20px; text-align:left; border-bottom:1px solid var(--line);}
  .spec-table th{
    font-family:var(--mono); font-size:11px; letter-spacing:0.08em; text-transform:uppercase;
    color:var(--text-muted); font-weight:500; background:var(--panel);
  }
  .spec-table th:first-child, .spec-table td:first-child{border-right:1px solid var(--line); font-weight:500;}
  .spec-table tr:last-child td{border-bottom:none;}
  .spec-table td.brand{color:var(--accent); font-weight:600;}
  .yes{color:var(--ok); font-weight:600;}
  .no{color:var(--text-muted);}

  /* ---------- Versus ---------- */
  .versus{border-top:1px solid var(--line-strong);}
  .versus-head{
    display:grid; grid-template-columns:1fr 60px 1fr; align-items:center;
    padding:20px 0; border-bottom:1px solid var(--line);
  }
  .v-label{
    font-family:var(--mono); font-size:11px; letter-spacing:0.08em; text-transform:uppercase;
    padding:5px 12px; border-radius:4px; display:inline-block; width:fit-content;
  }
  .versus-head .v-label.ok{justify-self:end; margin-left:auto;}
  .v-label.warn{background:#F4ECE6; color:#A0552E;}
  .v-label.ok{background:#E5F0EA; color:var(--ok);}
  .v-vs{font-family:var(--mono); color:var(--text-muted); text-align:center; font-size:12px; letter-spacing:0.1em; text-transform:uppercase;}
  .versus-row{
    display:grid; grid-template-columns:1fr 60px 1fr; align-items:center;
    padding:22px 0; border-bottom:1px solid var(--line); gap:0;
  }
  .versus-row p{font-size:15px; line-height:1.7;}
  .versus-row p:first-child{color:var(--text-muted); padding-right:40px;}
  .versus-row p:last-child{color:var(--text); font-weight:500; padding-left:40px; border-left:1px solid var(--line); grid-column:3;}
  .versus-row p:first-child{grid-column:1;}
  @media (max-width: 760px){
    .versus-head, .versus-row{grid-template-columns:1fr;}
    .versus-head .v-label.ok{justify-self:start; margin-left:0; margin-top:8px;}
    .v-vs{display:none;}
    .versus-row p:last-child{border-left:none; padding-left:0; margin-top:8px; padding-top:8px; border-top:1px dashed var(--line);}
    .versus-row p:first-child{padding-right:0;}
  }

  /* ---------- Metrics ---------- */
  .metrics{display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:var(--line); border:1px solid var(--line); border-radius:8px; overflow:hidden; margin-top:48px;}
  .metric{background:#fff; padding:32px 28px;}
  .metric-label{font-family:var(--mono); font-size:11px; letter-spacing:0.06em; text-transform:uppercase; color:var(--text-muted); margin-bottom:10px;}
  .metric-value{font-family:var(--display); font-size:27px; font-weight:800; letter-spacing:-0.01em; color:var(--ink);}

  /* ---------- Platform table ---------- */
  .platform-table{width:100%; border-collapse:collapse; font-size:14.5px;}
  .platform-table th{
    font-family:var(--mono); font-size:11px; letter-spacing:0.08em; text-transform:uppercase;
    color:var(--text-muted); font-weight:500; text-align:left; padding:12px 0; border-bottom:1px solid var(--line-strong);
  }
  .platform-table td{padding:18px 0; border-bottom:1px solid var(--line); vertical-align:top;}
  .platform-table tr:last-child td{border-bottom:none;}
  .platform-table a{color:var(--accent); text-decoration:none; font-weight:500;}
  .platform-table a:hover{text-decoration:underline;}

  /* ---------- Footer ---------- */
  footer{border-top:1px solid var(--line); padding:72px 0 40px;}
  .footer-grid{display:grid; grid-template-columns:2fr 1fr 1fr; gap:64px; margin-bottom:56px;}
  .footer-brand .logo{margin-bottom:16px; display:inline-block;}
  .footer-brand p{color:var(--text-muted); font-size:14.5px; max-width:32ch; line-height:1.7;}
  .footer-col h4{font-family:var(--mono); font-size:11px; letter-spacing:0.08em; text-transform:uppercase; color:var(--text-muted); margin-bottom:18px;}
  .footer-col ul{list-style:none;}
  .footer-col li{margin-bottom:12px;}
  .footer-col a{color:var(--text); font-size:14.5px; text-decoration:none;}
  .footer-col a:hover{color:var(--accent);}
  .footer-bottom{
    border-top:1px solid var(--line); padding-top:32px; display:flex; justify-content:space-between;
    font-size:13px; color:var(--text-muted); flex-wrap:wrap; gap:16px;
  }
  .footer-bottom a{color:var(--text-muted); text-decoration:none;}

  @media (max-width: 860px){
    .navlinks{display:none;}
    .metrics{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr; gap:40px;}
    section{padding:64px 0;}
    .spec-table{font-size:13px;}
    .spec-table th, .spec-table td{padding:12px 10px;}
  }
</style>

/* ---------- Sub-page header (Downloads / Whitepaper / Privacy / Terms) ---------- */
.page-header{
  padding:80px 0 64px; border-bottom:1px solid var(--line);
  background: linear-gradient(180deg, var(--accent-light) 0%, var(--paper) 70%);
}
.page-header .kicker{margin-bottom:18px;}
.page-header h1{
  font-family:var(--display); font-weight:800; font-size:clamp(36px,5.5vw,56px);
  line-height:1.05; letter-spacing:-0.02em; margin-bottom:18px; max-width:18ch;
}
.page-header p{font-size:17px; color:var(--text-muted); max-width:60ch; line-height:1.7;}
.page-header .meta-row{
  display:flex; gap:28px; flex-wrap:wrap; margin-top:28px;
  font-family:var(--mono); font-size:12px; color:var(--text-muted); letter-spacing:0.04em;
}
.page-header .meta-row strong{color:var(--ink); font-weight:600;}

/* ---------- Changelog ---------- */
.changelog-grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:1px;
  background:var(--line); border:1px solid var(--line); border-radius:10px; overflow:hidden;
}
.changelog-card{background:#fff; padding:32px;}
.changelog-card .cl-tag{
  font-family:var(--mono); font-size:11px; letter-spacing:0.08em; text-transform:uppercase;
  color:var(--accent); display:inline-block; padding:4px 10px; border-radius:4px;
  background:var(--accent-light); margin-bottom:18px;
}
.changelog-card h3{font-family:var(--display); font-weight:700; font-size:18px; letter-spacing:-0.01em; margin-bottom:10px;}
.changelog-card p{color:var(--text-muted); font-size:14.5px; line-height:1.7;}
@media (max-width:860px){
  .changelog-grid{grid-template-columns:1fr;}
}

/* ---------- Download grid ---------- */
.download-grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:1px;
  background:var(--line); border:1px solid var(--line); border-radius:10px; overflow:hidden;
  margin-bottom:64px;
}
.download-card{background:#fff; padding:28px; display:flex; flex-direction:column; gap:14px;}
.download-card h3{font-family:var(--display); font-weight:700; font-size:17px; letter-spacing:-0.01em;}
.download-card .dl-meta{font-family:var(--mono); font-size:12px; color:var(--text-muted);}
.download-card .dl-actions{display:flex; gap:10px; flex-wrap:wrap; margin-top:auto; padding-top:8px;}
.download-card .dl-note{font-size:12.5px; color:var(--text-muted);}
.dl-btn{
  font-family:var(--mono); font-size:12px; letter-spacing:0.02em;
  border:1px solid var(--line-strong); border-radius:4px; padding:8px 14px;
  text-decoration:none; color:var(--text); transition:border-color .15s, color .15s, background .15s;
  background:#fff;
}
.dl-btn:hover{border-color:var(--accent); color:var(--accent); background:var(--accent-light);}
.dl-btn.primary{background:var(--ink); color:#fff; border-color:var(--ink);}
.dl-btn.primary:hover{background:var(--accent-deep); border-color:var(--accent-deep); color:#fff;}
@media (max-width:860px){
  .download-grid{grid-template-columns:1fr;}
}

/* ---------- Mobile client grid ---------- */
.mobile-grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:1px;
  background:var(--line); border:1px solid var(--line); border-radius:10px; overflow:hidden;
  margin-bottom:64px;
}
.mobile-card{background:#fff; padding:28px; display:flex; flex-direction:column; gap:14px;}
.mobile-card h3{font-family:var(--display); font-weight:700; font-size:17px; letter-spacing:-0.01em;}
.mobile-card p{color:var(--text-muted); font-size:14px; line-height:1.6;}
.mobile-card .dl-meta{font-family:var(--mono); font-size:12px; color:var(--text-muted); margin-top:auto;}
.mobile-card .dl-actions{display:flex; gap:10px; flex-wrap:wrap; padding-top:8px;}
@media (max-width:860px){
  .mobile-grid{grid-template-columns:1fr;}
}

/* ---------- Code block (standalone) ---------- */
.code-block{
  background:var(--mono-bg); border-radius:8px; overflow:hidden; border:1px solid #232C38;
  margin:32px 0;
}
.code-block-head{
  display:flex; align-items:center; justify-content:space-between;
  padding:10px 18px; border-bottom:1px solid #232C38;
}
.code-block-head .filename{font-family:var(--mono); font-size:12px; color:#8B98A8; letter-spacing:0.04em;}
.code-block pre{
  margin:0; padding:20px; font-family:var(--mono); font-size:13px; line-height:1.7;
  color:var(--mono-text); overflow-x:auto;
}
.code-block .c-kw{color:var(--accent-soft);}
.code-block .c-type{color:#9FE1CB;}
.code-block .c-com{color:#5F6B7A;}
.code-block .c-str{color:#F0997B;}
.code-block .c-fn{color:#E8C07D;}

/* ---------- Inline shell command ---------- */
.shell-line{
  font-family:var(--mono); font-size:13px; background:var(--mono-bg); color:var(--mono-text);
  padding:14px 18px; border-radius:6px; overflow-x:auto; margin:16px 0;
}
.shell-line .c-com{color:#5F6B7A;}

/* ---------- Whitepaper layout ---------- */
.wp-layout{display:grid; grid-template-columns:240px 1fr; gap:64px; align-items:start;}
.wp-toc{position:sticky; top:96px; padding-top:8px;}
.wp-toc-label{
  font-family:var(--mono); font-size:11px; letter-spacing:0.1em; text-transform:uppercase;
  color:var(--text-muted); margin-bottom:16px;
}
.wp-toc ul{list-style:none;}
.wp-toc li{margin-bottom:10px;}
.wp-toc a{
  font-size:14px; color:var(--text-muted); text-decoration:none; display:block;
  padding:6px 0 6px 14px; border-left:2px solid var(--line); transition:color .15s, border-color .15s;
}
.wp-toc a:hover, .wp-toc a.active{color:var(--ink); border-color:var(--accent); font-weight:500;}
.wp-content{max-width:760px;}
.wp-section{padding:48px 0; border-bottom:1px solid var(--line);}
.wp-section:first-child{padding-top:0;}
.wp-section:last-child{border-bottom:none;}
.wp-section .wp-num{
  font-family:var(--mono); font-size:12px; letter-spacing:0.1em; text-transform:uppercase;
  color:var(--accent); display:block; margin-bottom:12px;
}
.wp-section h2{font-size:clamp(24px,3vw,32px); margin-bottom:18px;}
.wp-section h3{
  font-family:var(--display); font-weight:700; font-size:18px; letter-spacing:-0.01em;
  margin:28px 0 10px;
}
.wp-section p{color:var(--text-muted); font-size:15.5px; line-height:1.8; margin-bottom:16px;}
.wp-section p strong{color:var(--text); font-weight:600;}
.wp-section table{width:100%; border-collapse:collapse; font-size:14px; margin:24px 0; border:1px solid var(--line); border-radius:8px; overflow:hidden;}
.wp-section th, .wp-section td{padding:14px 16px; text-align:left; border-bottom:1px solid var(--line); vertical-align:top;}
.wp-section th{
  font-family:var(--mono); font-size:11px; letter-spacing:0.06em; text-transform:uppercase;
  color:var(--text-muted); font-weight:500; background:var(--panel);
}
.wp-section tr:last-child td{border-bottom:none;}

/* ---------- Mini concept cards (whitepaper routing/caching) ---------- */
.concept-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:1px; background:var(--line); border:1px solid var(--line); border-radius:8px; overflow:hidden; margin:24px 0;}
.concept-card{background:#fff; padding:22px;}
.concept-card .c-tag{
  font-family:var(--mono); font-size:10.5px; letter-spacing:0.08em; text-transform:uppercase;
  color:var(--accent); display:block; margin-bottom:10px;
}
.concept-card h4{font-family:var(--display); font-weight:700; font-size:15px; margin-bottom:6px; letter-spacing:-0.005em;}
.concept-card p{font-size:13.5px; color:var(--text-muted); line-height:1.6; margin-bottom:0;}

/* ---------- Cache tier rows ---------- */
.tier-list{border:1px solid var(--line); border-radius:8px; overflow:hidden; margin:24px 0;}
.tier-row{display:grid; grid-template-columns:140px 140px 1fr; gap:20px; align-items:center; padding:16px 20px; border-bottom:1px solid var(--line); background:#fff;}
.tier-row:last-child{border-bottom:none;}
.tier-row.recommended{background:var(--accent-light);}
.tier-row .t-name{font-family:var(--mono); font-size:12px; letter-spacing:0.06em; text-transform:uppercase; color:var(--text);}
.tier-row .t-time{font-family:var(--display); font-weight:800; font-size:15px; letter-spacing:-0.01em;}
.tier-row .t-desc{font-size:13.5px; color:var(--text-muted);}
@media (max-width:760px){
  .tier-row{grid-template-columns:1fr; gap:4px;}
}

/* ---------- Management philosophy cards ---------- */
.mgmt-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:1px; background:var(--line); border:1px solid var(--line); border-radius:8px; overflow:hidden; margin:24px 0;}
.mgmt-card{background:#fff; padding:24px;}
.mgmt-card h4{font-family:var(--display); font-weight:700; font-size:14px; letter-spacing:0.04em; text-transform:uppercase; margin-bottom:10px; color:var(--accent);}
.mgmt-card p{font-size:13.5px; color:var(--text-muted); line-height:1.7; margin-bottom:0;}
@media (max-width:760px){
  .mgmt-grid{grid-template-columns:1fr;}
}

/* ---------- Legal prose ---------- */
.legal-content{max-width:720px;}
.legal-content h2{
  font-family:var(--display); font-weight:800; font-size:22px; letter-spacing:-0.01em;
  margin:40px 0 14px;
}
.legal-content h2:first-child{margin-top:0;}
.legal-content p{color:var(--text-muted); font-size:15.5px; line-height:1.8; margin-bottom:14px;}
.legal-content ul{color:var(--text-muted); font-size:15.5px; line-height:1.8; margin:14px 0 14px 22px;}
.legal-content li{margin-bottom:8px;}
.legal-content strong{color:var(--text); font-weight:600;}
.legal-content a{color:var(--accent); text-decoration:none;}
.legal-content a:hover{text-decoration:underline;}

@media (max-width: 900px){
  .wp-layout{grid-template-columns:1fr;}
  .wp-toc{display:none;}
  .download-grid, .mobile-grid{grid-template-columns:1fr;}
  .concept-grid, .mgmt-grid{grid-template-columns:1fr;}
}