/* ============================================================
   Reset & Base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --tg:        #2AABEE;
  --tg-dark:   #1479C8;
  --accent:    #6C63FF;
  --accent-dk: #5046D4;
  --green:     #22C55E;
  --red:       #EF4444;
  --bg:        #0D1117;
  --bg-2:      #161B22;
  --bg-3:      #1C2330;
  --border:    rgba(255,255,255,.08);
  --text:      #E6EDF3;
  --muted:     #8B949E;
  --radius:    14px;
  --radius-lg: 20px;
  --shadow:    0 4px 32px rgba(0,0,0,.45);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

/* ============================================================
   Layout
   ============================================================ */
.container {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}

.section { padding: 80px 0; }
.section--alt { background: var(--bg-2); }

.section-header { text-align: center; margin-bottom: 48px; }
.section-title   { font-size: clamp(1.6rem, 4vw, 2.2rem); font-weight: 800; letter-spacing: -.02em; }
.section-sub     { color: var(--muted); margin-top: 10px; font-size: 1rem; }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 10px;
  font-size: .95rem;
  font-weight: 600;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background .18s, border-color .18s, color .18s, transform .12s, box-shadow .18s;
  white-space: nowrap;
}
.btn:hover  { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: linear-gradient(135deg, var(--tg), var(--tg-dark));
  color: #fff;
  box-shadow: 0 4px 20px rgba(42,171,238,.3);
}
.btn--primary:hover { box-shadow: 0 6px 28px rgba(42,171,238,.45); }

.btn--outline {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn--outline:hover { border-color: var(--tg); color: var(--tg); background: rgba(42,171,238,.08); }
.btn--outline.btn--copied { border-color: var(--green); color: var(--green); background: rgba(34,197,94,.08); }

.btn--ghost {
  background: rgba(255,255,255,.06);
  color: var(--text);
  border-color: transparent;
}
.btn--ghost:hover { background: rgba(255,255,255,.1); }

.btn--accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-dk));
  color: #fff;
  box-shadow: 0 4px 20px rgba(108,99,255,.3);
}
.btn--accent:hover { box-shadow: 0 6px 28px rgba(108,99,255,.45); }

.btn--sm  { padding: 7px 16px; font-size: .85rem; }
.btn--lg  { padding: 13px 28px; font-size: 1rem; }

/* ============================================================
   Badges
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .02em;
}
.badge--green { background: rgba(34,197,94,.15); color: var(--green); }
.badge--blue  { background: rgba(42,171,238,.15); color: var(--tg); }

/* ============================================================
   Navigation
   ============================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13,17,23,.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 52px;
}
.nav__tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  background: rgba(255,255,255,.05);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 4px;
}
.nav__tab {
  padding: 6px 20px;
  border-radius: 7px;
  font-size: .88rem;
  font-weight: 600;
  color: var(--muted);
  transition: background .15s, color .15s;
  letter-spacing: .01em;
}
.nav__tab:hover {
  background: rgba(255,255,255,.08);
  color: var(--text);
}
.nav__tab--accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-dk));
  color: #fff;
  box-shadow: 0 2px 10px rgba(108,99,255,.35);
}
.nav__tab--accent:hover {
  background: linear-gradient(135deg, var(--accent), var(--accent-dk));
  color: #fff;
  opacity: .9;
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  padding: 100px 0 80px;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(42,171,238,.12) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 80% 80%, rgba(108,99,255,.08) 0%, transparent 60%);
  pointer-events: none;
}
.hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.hero__badge {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  flex-wrap: wrap;
  justify-content: center;
}
.hero__title {
  font-size: clamp(2rem, 6vw, 3.4rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.03em;
  margin-bottom: 20px;
}
.hero__sub {
  max-width: 560px;
  color: var(--muted);
  font-size: 1.05rem;
  margin-bottom: 36px;
}
.hero__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

/* ============================================================
   Proxy Card
   ============================================================ */
.proxy-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow);
}
.proxy-card__header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 28px;
}
.proxy-card__icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, rgba(42,171,238,.2), rgba(20,121,200,.2));
  border: 1px solid rgba(42,171,238,.3);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--tg);
}
.proxy-card__title { font-size: 1.3rem; font-weight: 700; }
.proxy-card__desc  { color: var(--muted); font-size: .9rem; margin-top: 2px; }

.proxy-steps {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 28px;
}
.proxy-step {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}
.proxy-step__num {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--tg), var(--tg-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .8rem;
  font-weight: 700;
  color: #fff;
}
.proxy-step p { font-size: .9rem; color: var(--muted); }
.proxy-step strong { color: var(--text); }

.proxy-actions {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.proxy-url-box {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
}
.proxy-url-label {
  display: block;
  font-size: .75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 6px;
}
.proxy-url-text {
  display: block;
  font-size: .8rem;
  color: var(--tg);
  word-break: break-all;
  font-family: 'Courier New', monospace;
}

/* ============================================================
   Comparison
   ============================================================ */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.compare-card {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.compare-card--vpn {
  border-color: rgba(108,99,255,.3);
  background: linear-gradient(160deg, var(--bg-3) 60%, rgba(108,99,255,.06));
  display: flex;
  flex-direction: column;
}

.compare-card__badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  background: rgba(42,171,238,.15);
  color: var(--tg);
  margin-bottom: 20px;
  align-self: flex-start;
}
.compare-card__badge--accent {
  background: rgba(108,99,255,.2);
  color: #a5a0ff;
}

.compare-list { list-style: none; display: flex; flex-direction: column; gap: 10px; flex: 1; margin-bottom: 24px; }
.compare-list li {
  padding-left: 24px;
  position: relative;
  font-size: .92rem;
  color: var(--muted);
}
.compare-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.compare-list li.pro { color: var(--text); }
.compare-list li.pro::before { background: var(--green); box-shadow: 0 0 6px rgba(34,197,94,.4); }
.compare-list li.con::before { background: var(--muted); }
.compare-list strong { color: var(--text); }

.compare-card--vpn .btn { margin-top: auto; align-self: flex-start; }

/* ============================================================
   FAQ
   ============================================================ */
.faq-list { display: flex; flex-direction: column; gap: 12px; max-width: 720px; margin: 0 auto; }

.faq-item {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .2s;
}
.faq-item[open] { border-color: rgba(42,171,238,.35); }

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  font-weight: 600;
  font-size: .97rem;
  cursor: pointer;
  list-style: none;
  gap: 12px;
  transition: color .15s;
}
.faq-question::-webkit-details-marker { display: none; }
.faq-question:hover { color: var(--tg); }

.faq-chevron {
  flex-shrink: 0;
  color: var(--muted);
  transition: transform .25s, color .15s;
}
.faq-item[open] .faq-chevron { transform: rotate(180deg); color: var(--tg); }

.faq-answer {
  padding: 0 22px 18px;
  color: var(--muted);
  font-size: .92rem;
  line-height: 1.7;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}
.faq-answer strong { color: var(--text); }

/* ============================================================
   CTA Section
   ============================================================ */
.cta-section { background: var(--bg); }

.cta-card {
  background: linear-gradient(135deg, var(--bg-2) 0%, rgba(108,99,255,.12) 100%);
  border: 1px solid rgba(108,99,255,.25);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: flex;
  align-items: center;
  gap: 48px;
  box-shadow: var(--shadow);
}
.cta-card__content { flex: 1; }
.cta-title { font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 800; letter-spacing: -.02em; margin-bottom: 14px; }
.cta-sub { color: var(--muted); font-size: .97rem; margin-bottom: 28px; max-width: 480px; }

.cta-card__visual { flex-shrink: 0; }
.cta-shield {
  width: 120px;
  height: 120px;
  background: linear-gradient(135deg, rgba(108,99,255,.15), rgba(42,171,238,.1));
  border: 1px solid rgba(108,99,255,.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #a5a0ff;
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  background: var(--bg);
}
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer__copy { color: var(--muted); font-size: .85rem; }
.footer__link {
  color: var(--tg);
  font-size: .85rem;
  font-weight: 500;
  transition: opacity .15s;
}
.footer__link:hover { opacity: .75; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 720px) {
  .nav__tab { padding: 6px 14px; font-size: .82rem; }
  .section { padding: 60px 0; }
  .hero { padding: 70px 0 60px; }

  .proxy-card { padding: 24px 20px; }
  .proxy-steps { grid-template-columns: 1fr; }
  .proxy-actions { flex-direction: column; }
  .proxy-actions .btn { width: 100%; justify-content: center; }

  .compare-grid { grid-template-columns: 1fr; }

  .cta-card { flex-direction: column; padding: 32px 24px; gap: 28px; text-align: center; }
  .cta-card__content { display: flex; flex-direction: column; align-items: center; }
  .cta-sub { text-align: center; }
  .cta-card__visual { order: -1; }
  .cta-shield { width: 88px; height: 88px; }
  .cta-shield svg { width: 56px; height: 56px; }

  .footer__inner { flex-direction: column; gap: 8px; text-align: center; }
}