*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --teal: #1d9e75;
  --teal-light: #e1f5ee;
  --teal-dark: #085041;
  --blue: #378add;
  --blue-dark: #185fa5;
  --amber: #ba7517;
  --bg: #0d0f12;
  --bg2: #141720;
  --bg3: #1c202b;
  --bg4: #232837;
  --border: rgba(255, 255, 255, 0.08);
  --border2: rgba(255, 255, 255, 0.14);
  --text: #f0f2f5;
  --muted: #8a93a8;
  --muted2: #5e6880;
  --font: "Outfit", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 15, 18, 0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 1.5rem;
}

.header-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 56px;
  flex-wrap: wrap;
  padding: 8px 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--text);
}

.logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--teal), #0a5c45);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.header-admin {
  padding: 8px 14px;
  border-radius: 10px;
  border: 1px solid var(--border2);
  background: var(--bg3);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 600;
  color: #5fd8b0;
  text-decoration: none;
  transition:
    border-color 0.18s,
    background 0.18s;
}

.header-admin:hover {
  border-color: rgba(29, 158, 117, 0.45);
  background: rgba(29, 158, 117, 0.1);
}

.status-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 20px;
  border: 1px solid rgba(29, 158, 117, 0.3);
  background: rgba(29, 158, 117, 0.08);
  font-size: 12px;
  color: var(--teal);
  font-weight: 500;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 6px var(--teal);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.hero {
  max-width: 900px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 1.25rem;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 20px;
  border: 1px solid var(--border2);
  background: var(--bg3);
  font-size: 12px;
  color: #5fd8b0;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.hero h1 {
  font-size: clamp(26px, 6vw, 44px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, #f0f2f5 30%, #8a93a8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: clamp(14px, 2.5vw, 16px);
  color: var(--muted);
  max-width: 520px;
  margin: 0 auto 1.25rem;
}

.hero p strong {
  color: var(--text);
  font-weight: 600;
}

.server-summary {
  max-width: 900px;
  margin: 0 auto 1.5rem;
  padding: 0 1.5rem;
}

.server-summary-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1.25rem 1.5rem;
}

.server-summary-label {
  font-size: 11px;
  font-weight: 600;
  color: #5fd8b0;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.server-addr-label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 8px;
}

.server-addr-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.addr-box {
  flex: 1;
  min-width: 180px;
  font-family: var(--mono);
  font-size: 14px;
  padding: 10px 14px;
  background: var(--bg4);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  word-break: break-all;
}

.copy-btn {
  padding: 10px 18px;
  border-radius: 10px;
  border: none;
  background: linear-gradient(135deg, var(--teal), #0a6b4f);
  color: #fff;
  font-family: var(--font);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: filter 0.15s;
}

.copy-btn:hover {
  filter: brightness(1.06);
}

.copy-btn.copied {
  background: var(--bg4);
  color: #5fd8b0;
  border: 1px solid rgba(29, 158, 117, 0.4);
}

.services-line {
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.55;
}

.services-line strong {
  color: var(--text);
  font-weight: 600;
}

.server-note {
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--muted2);
  line-height: 1.5;
}

.page-nav {
  max-width: 900px;
  margin: 0 auto 1.5rem;
  padding: 0 1.5rem;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.page-nav-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg3);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.18s;
  flex: 1;
  justify-content: center;
  min-width: 160px;
}

.page-nav-btn:hover {
  border-color: var(--border2);
  color: var(--text);
}

.page-nav-btn.active {
  background: var(--bg4);
  color: var(--text);
  border-color: var(--border2);
}

.page-section {
  display: none;
}

.page-section.visible {
  display: block;
}

.vpn-switcher {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.vpn-tabs {
  display: flex;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 4px;
  gap: 4px;
  margin-bottom: 1.25rem;
}

.vpn-tab {
  flex: 1;
  padding: 10px 16px;
  border-radius: 10px;
  border: none;
  background: transparent;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.vpn-tab.active {
  background: var(--bg4);
  color: var(--text);
  border: 1px solid var(--border2);
}

.vpn-tab-badge {
  font-size: 10px;
  padding: 2px 7px;
  border-radius: 8px;
  font-weight: 600;
}

.wg-badge {
  background: rgba(55, 138, 221, 0.15);
  color: #7ab8f5;
}

.amn-badge {
  background: rgba(29, 158, 117, 0.15);
  color: #5fd8b0;
}

.platform-selector {
  display: flex;
  gap: 6px;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.plat-btn {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg3);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.18s;
  flex: 1;
  justify-content: center;
  min-width: 80px;
}

.plat-btn:hover {
  border-color: var(--border2);
  color: var(--text);
}

.plat-btn.wg-active {
  background: rgba(55, 138, 221, 0.1);
  border-color: rgba(55, 138, 221, 0.4);
  color: #7ab8f5;
}

.plat-btn.amn-active {
  background: rgba(29, 158, 117, 0.1);
  border-color: rgba(29, 158, 117, 0.4);
  color: #5fd8b0;
}

.content {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
}

.vpn-section {
  display: none;
}

.vpn-section.visible {
  display: block;
}

.steps-panel {
  display: none;
}

.steps-panel.visible {
  display: block;
  animation: fadeUp 0.2s ease;
}

.region-panel {
  display: none;
}

.region-panel.visible {
  display: block;
  animation: fadeUp 0.2s ease;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.guide-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
}

.guide-card-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg3);
}

.plat-icon-lg {
  width: 44px;
  height: 44px;
  border-radius: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.ios-icon {
  background: linear-gradient(135deg, #1c4f8a, #2d7be5);
}

.android-icon {
  background: linear-gradient(135deg, #1a5c38, #2ea86a);
}

.windows-icon {
  background: linear-gradient(135deg, #173a6e, #0077d4);
}

.macos-icon {
  background: linear-gradient(135deg, #3a3a3a, #666);
}

.guide-card-header-text h2 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 2px;
}

.guide-card-header-text p {
  font-size: 12.5px;
  color: var(--muted);
}

.step-list {
  list-style: none;
}

.step-item {
  display: flex;
  gap: 14px;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
  transition: background 0.15s;
}

.step-item:last-child {
  border-bottom: none;
}

.step-item:hover {
  background: rgba(255, 255, 255, 0.02);
}

.step-circle {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  margin-top: 1px;
}

.wg-circle {
  background: rgba(55, 138, 221, 0.15);
  color: #7ab8f5;
  border: 1px solid rgba(55, 138, 221, 0.25);
}

.amn-circle {
  background: rgba(29, 158, 117, 0.15);
  color: #5fd8b0;
  border: 1px solid rgba(29, 158, 117, 0.25);
}

.step-body {
  flex: 1;
}

.step-body p {
  font-size: 14.5px;
  line-height: 1.6;
}

.step-body p b {
  color: #fff;
  font-weight: 600;
}

.code-tag {
  font-family: var(--mono);
  font-size: 12px;
  background: var(--bg4);
  color: #7ab8f5;
  padding: 1px 7px;
  border-radius: 5px;
  border: 1px solid var(--border2);
}

.alt-step {
  font-size: 12.5px;
  color: var(--muted);
  margin-top: 5px;
  padding: 6px 10px;
  background: var(--bg4);
  border-radius: 8px;
  border-left: 2px solid var(--border2);
}

.notice {
  padding: 1rem 1.5rem;
  display: flex;
  gap: 10px;
  align-items: flex-start;
  border-top: 1px solid var(--border);
}

.notice-tip {
  background: rgba(186, 117, 23, 0.08);
}

.notice-success {
  background: rgba(29, 158, 117, 0.08);
}

.notice-icon {
  font-size: 16px;
  flex-shrink: 0;
  margin-top: 1px;
}

.notice p {
  font-size: 13.5px;
  line-height: 1.6;
}

.notice-tip p {
  color: #e8b76a;
}

.notice-success p {
  color: #5fd8b0;
}

.ip-check-section {
  margin-top: 1.5rem;
}

.ip-check-section h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 0.875rem;
}

.check-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px;
}

.check-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem 1.125rem;
  font-size: 13.5px;
  line-height: 1.6;
}

.check-card .n {
  font-weight: 700;
  color: var(--teal);
  margin-right: 4px;
}

.trouble-section {
  margin-top: 2rem;
}

.trouble-section h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 0.875rem;
}

.trouble-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px;
}

.trouble-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem 1.125rem;
}

.trouble-icon {
  font-size: 18px;
  margin-bottom: 7px;
}

.trouble-title {
  font-size: 13.5px;
  font-weight: 600;
  margin-bottom: 6px;
}

.trouble-list {
  font-size: 12.5px;
  color: var(--muted);
  line-height: 1.8;
  list-style: none;
}

.trouble-list li {
  padding-left: 10px;
  position: relative;
}

.trouble-list li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--teal);
  font-weight: 700;
}

.region-tabs {
  display: flex;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 4px;
  gap: 4px;
  margin-bottom: 1.25rem;
}

.region-tab {
  flex: 1;
  padding: 10px 16px;
  border-radius: 10px;
  border: none;
  background: transparent;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.region-tab.active {
  background: var(--bg4);
  color: var(--text);
  border: 1px solid var(--border2);
}

.region-hero {
  text-align: center;
  padding: 0.5rem 1rem 1.5rem;
}

.region-hero h2 {
  font-size: clamp(20px, 4vw, 32px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.4rem;
  background: linear-gradient(135deg, #f0f2f5 30%, #8a93a8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.region-hero p {
  font-size: 14px;
  color: var(--muted);
}

.warn-box {
  background: rgba(186, 117, 23, 0.08);
  border-radius: 14px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
  border: 1px solid rgba(186, 117, 23, 0.2);
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.warn-box p {
  font-size: 13.5px;
  color: #e8b76a;
  line-height: 1.6;
}

.addr-card {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem 1.25rem;
  margin-top: 10px;
}

.addr-card-title {
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 10px;
}

.addr-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13.5px;
  gap: 12px;
}

.addr-row:last-child {
  border-bottom: none;
}

.addr-label {
  color: var(--muted);
  flex-shrink: 0;
}

.addr-val {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text);
  text-align: right;
}

.proj-support-strip {
  border-bottom: 1px solid var(--border);
  background: linear-gradient(90deg, rgba(29, 158, 117, 0.12), rgba(55, 138, 221, 0.08));
  padding: 0.4rem 1rem;
}

.proj-support-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.35rem 0.65rem;
  font-size: 12px;
  color: var(--muted);
}

.proj-support-lead {
  margin-right: 0.25rem;
  opacity: 0.95;
}

.proj-support-dot {
  opacity: 0.35;
  user-select: none;
}

.proj-support-inner a {
  color: #5fd8b0;
  text-decoration: none;
  white-space: nowrap;
  font-weight: 600;
}

.proj-support-inner a:hover {
  text-decoration: underline;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.75rem 1.5rem 2rem;
  text-align: center;
  font-size: 12px;
  color: var(--muted2);
}

.site-footer-lead {
  color: var(--muted);
  margin-bottom: 6px;
}

.support-line {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.35rem 0.5rem;
  margin-top: 12px;
  font-size: 12px;
}

.support-title {
  color: var(--text);
  font-weight: 700;
}

.support-sep {
  opacity: 0.45;
  user-select: none;
}

.support-line a {
  color: #5fd8b0;
  text-decoration: none;
  white-space: nowrap;
}

.support-line a:hover {
  text-decoration: underline;
}

.support-blurb {
  margin: 10px auto 0;
  max-width: 36rem;
  font-size: 11px;
  line-height: 1.45;
  color: var(--muted2);
}

.disclaimer-footer {
  margin-top: 16px;
  font-size: 11px;
  color: var(--muted2);
  line-height: 1.45;
  max-width: 28rem;
  margin-left: auto;
  margin-right: auto;
}

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: var(--bg4);
  border-radius: 3px;
}

@media (max-width: 600px) {
  .hero {
    padding: 1.75rem 1.25rem 1rem;
  }

  .page-nav,
  .vpn-switcher,
  .content,
  .server-summary {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .step-item {
    padding: 0.875rem 1rem;
  }

  .guide-card-header {
    padding: 1rem;
  }

  .notice {
    padding: 0.875rem 1rem;
  }

  .vpn-tab-badge {
    display: none;
  }

  .page-nav-btn {
    font-size: 13px;
    padding: 9px 12px;
  }
}