:root {
  --bg: #0a0e17;
  --surface: #10141f;
  --surface-2: #141925;
  --text: #f8f9ff;
  --text-dim: #c0cee8;
  --text-muted: #7a8db0;
  --accent: #274372;
  --accent-dim: #1e355e;
  --accent-light: #3a5a8f;
  --accent-glow: #4a6fa8;
  --border: #27437240;
  --border-strong: #27437270;
  --danger: #a83232;
  --danger-dim: #8a2828;
  --radius-sm: 5px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.38);
  --shadow-md: 0 6px 24px rgba(0,0,0,0.42);
  --transition: 0.18s ease;
}

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

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.48;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
}

body {
  overflow-x: hidden;
  font-feature-settings: "liga" 1, "calt" 1;
  -webkit-tap-highlight-color: transparent;
}

.prism-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse at 30% 70%, #27437215 0%, transparent 60%);
  opacity: 0.75;
  z-index: -1;
  will-change: opacity;
}

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

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

.top-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 1.2rem 0;
  background: rgba(10,14,23,0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.logo {
  font-size: 2.1rem;
  font-weight: 100;
  letter-spacing: 0.36em;
}

.tagline {
  font-size: 0.94rem;
  color: var(--accent-light);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero {
  text-align: center;
  padding: 5.5rem 1rem 4rem;
}

.hero h1 {
  font-size: clamp(2.8rem, 7.5vw, 4.6rem);
  font-weight: 100;
  letter-spacing: 0.4em;
  background: linear-gradient(90deg, #a3bffa 0%, #ffffff 50%, #a3bffa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% auto;
  animation: subtle-shine 14s linear infinite;
}

@keyframes subtle-shine {
  0%   { background-position: 0% center; }
  100% { background-position: 200% center; }
}

.lead {
  font-size: clamp(1.3rem, 3vw, 1.55rem);
  max-width: 860px;
  margin: 1.6rem auto 1.2rem;
  color: var(--text-dim);
}

.sublead {
  font-size: 1.15rem;
  color: var(--accent-light);
  letter-spacing: 0.04em;
}

.mirrors-block {
  max-width: 760px;
  margin: 0 auto 4.5rem;
  text-align: center;
}

.mirrors-block h2 {
  font-size: 2.2rem;
  font-weight: 300;
  margin-bottom: 1.4rem;
  color: var(--accent-glow);
}

.mirrors-notice {
  color: #a3bffa;
  font-size: 1.06rem;
  margin-bottom: 2rem;
}

.mirror-list {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  margin: 2.2rem 0;
}

.mirror-link {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 1.2rem 1.6rem;
  background: rgba(39,67,114,0.14);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: #c3d0e8;
  font-family: ui-monospace, 'Cascadia Mono', 'Segoe UI Mono', monospace;
  font-size: 1.1rem;
  line-height: 1.45;
  transition: all var(--transition);
  word-break: break-all;
}

.mirror-link:hover,
.mirror-link:focus {
  background: rgba(39,67,114,0.28);
  border-color: var(--accent-light);
  color: white;
  box-shadow: 0 0 0 3px rgba(58,90,143,0.22);
  transform: translateY(-1px);
}

.mirror-link:focus {
  outline: 2px solid var(--accent-glow);
  outline-offset: 2px;
}

.mirror-warning {
  margin-top: 2.2rem;
  padding: 1.3rem 1.6rem;
  background: rgba(168,50,50,0.11);
  border: 1px solid rgba(168,50,50,0.35);
  border-radius: var(--radius-md);
  color: #ffcccc;
  font-size: 0.97rem;
}

.primary-mirror-info {
  margin-top: 1.8rem;
  font-size: 1.1rem;
  color: #a3bffa;
}

.features,
.platform-description,
.key-benefits {
  padding: 5rem 1rem;
}

.features h2,
.platform-description h2,
.key-benefits h2 {
  text-align: center;
  font-size: clamp(1.9rem, 5vw, 2.4rem);
  font-weight: 300;
  margin-bottom: 3.5rem;
  color: var(--accent-glow);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.2rem;
}

.feature-item {
  padding: 2.2rem 1.8rem;
  background: rgba(39,67,114,0.09);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all var(--transition);
}

.feature-item:hover {
  background: rgba(39,67,114,0.16);
  border-color: var(--accent-light);
  transform: translateY(-1px);
}

.feature-item h3 {
  font-size: clamp(1.35rem, 4vw, 1.55rem);
  margin-bottom: 1rem;
  color: #a3bffa;
}

.feature-item p {
  color: var(--text-dim);
  font-size: 0.97rem;
}

.authentication-area,
.login-box {
  max-width: 480px;
  margin: 5rem auto;
  padding: 3rem 2.2rem;
  background: rgba(15,20,35,0.62);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.authentication-area h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 1.8rem;
  color: var(--accent-glow);
}

.login-notice {
  text-align: center;
  color: #a3bffa;
  margin-bottom: 2rem;
  font-size: 1.03rem;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.login-form input {
  padding: 1.15rem 1.5rem;
  background: #0e1322;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: white;
  font-size: 1.08rem;
  transition: all var(--transition);
}

.login-form input:focus {
  outline: none;
  border-color: var(--accent-light);
  box-shadow: 0 0 0 3px rgba(58,90,143,0.18);
}

.login-form input::placeholder {
  color: #5a718f;
}

.login-form button {
  min-height: 48px;
  margin-top: 1.2rem;
  padding: 1.25rem;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1.12rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}

.login-form button:hover {
  background: var(--accent-glow);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(58,90,143,0.28);
}

.login-form button:focus {
  outline: 2px solid white;
  outline-offset: 3px;
}

.faq-section {
  max-width: 860px;
  margin: 6rem auto 4rem;
  padding: 0 1rem;
}

.faq-section h2 {
  text-align: center;
  font-size: 2.3rem;
  margin-bottom: 3rem;
  color: var(--accent);
}

.faq-section dt {
  font-weight: 500;
  margin: 2.2rem 0 0.7rem;
  color: #a3bffa;
  font-size: 1.18rem;
}

.faq-section dd {
  color: var(--text-dim);
  padding-left: 1.6rem;
  border-left: 2px solid var(--accent-dim);
  font-size: 1.03rem;
}

.security-guidelines {
  max-width: 860px;
  margin: 5rem auto;
  padding: 0 1rem;
}

.security-guidelines h2 {
  text-align: center;
  font-size: 2.2rem;
  margin-bottom: 2.5rem;
  color: var(--accent-glow);
}

.security-guidelines ol {
  counter-reset: item;
  list-style: none;
  padding-left: 2.2rem;
}

.security-guidelines li {
  position: relative;
  margin-bottom: 1.4rem;
  color: var(--text-dim);
  font-size: 1.02rem;
}

.security-guidelines li::before {
  content: counter(item) ".";
  counter-increment: item;
  position: absolute;
  left: -2.2rem;
  color: var(--accent-light);
  font-weight: 600;
}

.site-footer {
  padding: 5rem 1rem 3rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.95rem;
  border-top: 1px solid var(--border);
}

.site-footer p + p {
  margin-top: 0.8rem;
}

.disclaimer {
  margin-top: 2.2rem;
  font-size: 0.89rem;
  opacity: 0.75;
}

.update-info {
  margin-top: 1.6rem;
  font-size: 0.92rem;
}

h1, h2, h3 {
  font-weight: 300;
  letter-spacing: -0.015em;
}

:focus-visible {
  outline: 2px solid var(--accent-glow);
  outline-offset: 2px;
}

main {
  contain: paint style layout;
}

@media (max-width: 820px) {
  .hero { padding: 4.5rem 1rem 3.5rem; }
  .feature-grid { gap: 1.8rem; }
}

@media (max-width: 640px) {
  .container { padding: 0 1rem; }
  .hero { padding-top: 4rem; padding-bottom: 3rem; }
  .authentication-area { padding: 2rem 1.4rem; margin: 4rem auto; }
  .mirror-link { padding: 1.1rem 1.4rem; font-size: 1.05rem; }
}