:root {
  --bg: #07111f;
  --bg-deep: #050b14;
  --panel: #0e1b2a;
  --panel-soft: #12263a;
  --panel-glass: rgba(14, 27, 42, 0.78);
  --border: rgba(148, 163, 184, 0.18);
  --border-strong: rgba(34, 211, 238, 0.32);
  --primary: #22d3ee;
  --secondary: #2dd4bf;
  --text: #e5f0ff;
  --muted: #94a3b8;
  --soft: #cbd5e1;
  --warning: #f59e0b;
  --danger: #ef4444;
  --success: #22c55e;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.38);
  --radius: 22px;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 15% -10%, rgba(34, 211, 238, 0.12), transparent 34rem),
    radial-gradient(circle at 90% 10%, rgba(45, 212, 191, 0.10), transparent 30rem),
    linear-gradient(180deg, var(--bg), var(--bg-deep));
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a { color: var(--primary); }
a:hover { color: var(--secondary); }
img { max-width: 100%; height: auto; }
.skip-link { position: absolute; left: -999px; top: 0; background: var(--primary); color: #02111d; padding: 10px; z-index: 100; }
.skip-link:focus { left: 12px; top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: rgba(7, 17, 31, 0.86);
  border-bottom: 1px solid var(--border);
}
.nav-wrap {
  width: min(var(--max), calc(100% - 36px));
  margin: 0 auto;
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 900; letter-spacing: -0.03em; font-size: 22px; }
.brand img { border-radius: 12px; box-shadow: 0 0 28px rgba(34, 211, 238, 0.18); }
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a { color: var(--soft); text-decoration: none; padding: 10px 12px; border-radius: 999px; font-weight: 750; font-size: 14px; }
.main-nav a:hover, .main-nav a:focus { background: rgba(34, 211, 238, 0.09); color: var(--text); }
.nav-toggle { display: none; border: 1px solid var(--border); background: var(--panel); color: var(--text); border-radius: 12px; padding: 8px 11px; font-size: 20px; }

main { width: min(var(--max), calc(100% - 36px)); margin: 0 auto; padding: 34px 0 58px; }
.hero {
  padding: clamp(28px, 5vw, 58px);
  border: 1px solid var(--border);
  border-radius: 30px;
  background:
    radial-gradient(circle at 82% 0%, rgba(34, 211, 238, 0.18), transparent 28rem),
    linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.015)),
    var(--panel-glass);
  box-shadow: var(--shadow);
  overflow: hidden;
  position: relative;
}
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(340px, .95fr); gap: 32px; align-items: center; }
.kicker { display: inline-flex; gap: 8px; align-items: center; color: var(--secondary); text-transform: uppercase; letter-spacing: .14em; font-size: 12px; font-weight: 900; margin: 0 0 14px; }
h1, h2, h3 { color: var(--text); line-height: 1.1; letter-spacing: -0.04em; }
h1 { font-size: clamp(42px, 7vw, 82px); margin: 0 0 18px; }
h1 span, h2 span { color: var(--primary); }
.lead { color: var(--soft); font-size: clamp(17px, 2vw, 21px); max-width: 780px; margin: 0; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 12px 18px; border-radius: 14px; background: linear-gradient(135deg, var(--primary), var(--secondary)); color: #03111d; font-weight: 900; text-decoration: none; box-shadow: 0 16px 34px rgba(34, 211, 238, 0.18); border: 0; cursor: pointer; }
.btn.secondary { background: rgba(34, 211, 238, 0.08); color: var(--primary); border: 1px solid var(--border-strong); box-shadow: none; }
.btn.small { min-height: 36px; padding: 8px 12px; font-size: 14px; }

.terminal-card, .card, .panel, .score-card, .article-card {
  background: linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.012)), var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.terminal-card { overflow: hidden; }
.terminal-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--border); background: rgba(5, 11, 20, 0.65); color: var(--muted); font-size: 13px; }
.dots { display: flex; gap: 6px; }
.dots span { width: 10px; height: 10px; border-radius: 50%; background: var(--primary); opacity: .75; }
.terminal-body { padding: 18px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 14px; color: #d7fffb; }
.terminal-body p { margin: 0 0 12px; }
.prompt { color: var(--secondary); }
.ok { color: var(--success); }
.warn { color: var(--warning); }
.bad { color: var(--danger); }

.section { margin-top: 30px; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 18px; margin-bottom: 16px; }
.section-head h2 { font-size: clamp(30px, 4vw, 48px); margin: 0; }
.section-head p { margin: 8px 0 0; color: var(--muted); max-width: 760px; }
.grid { display: grid; gap: 18px; }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card, .panel, .article-card { padding: 22px; }
.card h3, .article-card h3 { margin: 0 0 10px; font-size: 22px; }
.card p, .article-card p, .panel p { color: var(--muted); margin: 0 0 14px; }
.card-icon { width: 46px; height: 46px; border-radius: 15px; display: grid; place-items: center; margin-bottom: 16px; color: #03111d; background: linear-gradient(135deg, var(--primary), var(--secondary)); font-weight: 900; }
.link-strong { font-weight: 900; text-decoration: none; }
.badge-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 6px 10px; border-radius: 999px; border: 1px solid var(--border-strong); color: var(--primary); background: rgba(34, 211, 238, .07); font-size: 12px; font-weight: 850; text-transform: uppercase; letter-spacing: .08em; }

.score-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.score-card { padding: 18px; }
.score-card strong { display: block; color: var(--text); font-size: 26px; }
.score-card span { display: block; color: var(--muted); font-size: 13px; }
.score-bar { height: 8px; background: rgba(148,163,184,.16); border-radius: 99px; overflow: hidden; margin-top: 12px; }
.score-bar i { display: block; height: 100%; width: var(--w); background: linear-gradient(90deg, var(--primary), var(--secondary)); border-radius: inherit; }

.breadcrumbs { color: var(--muted); margin: 0 0 18px; font-size: 14px; }
.breadcrumbs a { color: var(--muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--primary); }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 24px; align-items: start; }
.article-main { padding: 28px; }
.article-main h1 { font-size: clamp(38px, 5vw, 62px); }
.article-main h2 { font-size: 32px; margin-top: 34px; }
.article-main h3 { font-size: 23px; margin-top: 26px; }
.article-main p, .article-main li { color: var(--soft); font-size: 17px; }
.article-main a { font-weight: 750; }
.article-sidebar { position: sticky; top: 96px; display: grid; gap: 16px; }
.toc a, .link-list a { display: block; color: var(--soft); text-decoration: none; padding: 9px 0; border-bottom: 1px solid rgba(148, 163, 184, .12); }
.toc a:hover, .link-list a:hover { color: var(--primary); }
.callout { padding: 18px; border: 1px solid rgba(245, 158, 11, .26); border-left: 4px solid var(--warning); border-radius: 16px; background: rgba(245, 158, 11, .08); margin: 22px 0; }
.callout.good { border-color: rgba(34,197,94,.26); border-left-color: var(--success); background: rgba(34,197,94,.08); }
pre { position: relative; margin: 18px 0; background: #030913; border: 1px solid rgba(34, 211, 238, .18); border-radius: 16px; padding: 18px; overflow-x: auto; color: #d7fffb; box-shadow: inset 0 0 26px rgba(34, 211, 238, .04); }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
:not(pre) > code { background: rgba(34, 211, 238, .08); border: 1px solid rgba(34, 211, 238, .12); color: #b8f7ff; padding: 2px 6px; border-radius: 8px; }
.copy-btn { position: absolute; right: 10px; top: 10px; border: 1px solid var(--border-strong); background: rgba(34, 211, 238, .08); color: var(--primary); border-radius: 10px; padding: 6px 9px; cursor: pointer; font-weight: 800; }
.table-wrap { overflow-x: auto; margin: 20px 0; }
table { width: 100%; border-collapse: collapse; background: rgba(5, 11, 20, .4); border: 1px solid var(--border); border-radius: 14px; overflow: hidden; }
th, td { padding: 13px 14px; border-bottom: 1px solid rgba(148, 163, 184, .13); text-align: left; vertical-align: top; }
th { color: var(--text); background: rgba(34, 211, 238, .07); }
td { color: var(--soft); }

.tool-box { padding: 26px; }
.form-grid { display: grid; gap: 16px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
label { display: block; color: var(--text); font-weight: 850; margin-bottom: 8px; }
select, input, textarea { width: 100%; color: var(--text); background: rgba(5, 11, 20, .72); border: 1px solid var(--border); border-radius: 14px; padding: 12px 13px; font: inherit; }
textarea { min-height: 130px; resize: vertical; }
.result-box { margin-top: 18px; padding: 20px; border: 1px solid var(--border-strong); border-radius: 18px; background: rgba(34, 211, 238, .06); }
.checklist { display: grid; gap: 12px; }
.check-item { display: grid; grid-template-columns: 28px 1fr; gap: 12px; align-items: start; padding: 14px; border: 1px solid var(--border); border-radius: 14px; background: rgba(255,255,255,.025); }
.progress { height: 12px; border-radius: 99px; background: rgba(148, 163, 184, .18); overflow: hidden; }
.progress span { display: block; height: 100%; width: 0%; background: linear-gradient(90deg, var(--primary), var(--secondary)); }

.site-footer { border-top: 1px solid var(--border); background: rgba(5, 11, 20, .72); padding: 36px 0 22px; }
.footer-grid { width: min(var(--max), calc(100% - 36px)); margin: 0 auto; display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 28px; }
.footer-grid h3 { margin: 0 0 10px; font-size: 18px; }
.footer-grid a { display: block; color: var(--muted); text-decoration: none; margin: 8px 0; }
.footer-grid a:hover { color: var(--primary); }
.footer-grid p { color: var(--muted); margin: 10px 0; }
.small { font-size: 13px; }
.footer-bottom { width: min(var(--max), calc(100% - 36px)); margin: 24px auto 0; padding-top: 18px; border-top: 1px solid rgba(148,163,184,.12); color: var(--muted); font-size: 14px; }

@media (max-width: 980px) {
  .hero-grid, .grid.three, .grid.two, .score-grid, .article-layout, .footer-grid { grid-template-columns: 1fr; }
  .article-sidebar { position: static; }
  .main-nav { display: none; position: absolute; left: 18px; right: 18px; top: 74px; background: rgba(7, 17, 31, .98); border: 1px solid var(--border); border-radius: 18px; padding: 12px; box-shadow: var(--shadow); }
  .main-nav.open { display: grid; }
  .nav-toggle { display: inline-flex; }
  .form-grid { grid-template-columns: 1fr; }
  .score-grid { gap: 14px; }
}

@media (max-width: 620px) {
  main { width: min(100% - 24px, var(--max)); padding-top: 20px; }
  .hero { padding: 24px; border-radius: 22px; }
  h1 { font-size: 40px; }
  .article-main { padding: 22px; }
  .section-head { display: block; }
}


/* VPN review comparison update v2 */
.vpn-table-wrap {
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(5, 11, 20, .34);
  box-shadow: var(--shadow);
}

.vpn-compare-table {
  min-width: 1120px;
}

.vpn-compare-table th {
  white-space: nowrap;
}

.vpn-compare-table td:first-child strong {
  display: block;
  font-size: 17px;
  color: var(--text);
}

.table-score,
.price-note {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.35;
}

.table-list {
  margin: 0;
  padding-left: 18px;
}

.table-list li {
  margin: 0 0 6px;
}

.review-summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 24px 0;
}

.review-mini-card {
  text-decoration: none;
}

.review-mini-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

@media (max-width: 820px) {
  .review-summary-grid {
    grid-template-columns: 1fr;
  }
}


/* VPN troubleshooting wizard explanation update v3 */
.result-box {
  overflow: hidden;
}

.wizard-result-head,
.wizard-explain,
.wizard-command,
.wizard-next {
  margin-bottom: 22px;
}

.wizard-result-head h3 {
  margin: 0 0 12px;
  color: var(--text);
  font-size: clamp(24px, 2.6vw, 34px);
  line-height: 1.1;
}

.wizard-result-head p,
.wizard-explain p,
.wizard-next p {
  color: var(--muted);
  line-height: 1.7;
}

.wizard-checks {
  display: grid;
  gap: 12px;
  padding-left: 0;
  list-style: none;
  counter-reset: none;
  margin: 18px 0 24px;
}

.wizard-checks li {
  padding: 16px;
  border: 1px solid rgba(34, 211, 238, .22);
  border-radius: 16px;
  background: rgba(34, 211, 238, .045);
}

.wizard-checks strong {
  display: block;
  color: var(--text);
  margin-bottom: 8px;
}

.wizard-checks span {
  display: block;
  color: var(--muted);
  line-height: 1.6;
}

.wizard-command h4,
.wizard-explain h4,
.wizard-next h4 {
  margin: 0 0 10px;
  color: var(--text);
  font-size: 18px;
}

.wizard-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.wizard-links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 9px 13px;
  border: 1px solid rgba(34, 211, 238, .28);
  border-radius: 12px;
  color: var(--primary);
  background: rgba(34, 211, 238, .06);
  text-decoration: none;
  font-weight: 800;
}

.wizard-links a:hover,
.wizard-links a:focus {
  background: rgba(34, 211, 238, .11);
  border-color: rgba(34, 211, 238, .44);
}