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

:root {
  --bg-dark: #0a0d14;
  --bg-mid: #0f1320;
  --bg-card: #151b2e;
  --accent: #00d4ff;
  --accent2: #7b2fff;
  --accent3: #ff4f7b;
  --text: #e2e8f0;
  --text-muted: #8896b3;
  --border: rgba(0, 212, 255, 0.15);
  --radius: 14px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg-dark);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: #fff;
}

ul {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===========================
   HEADER
=========================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 13, 20, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  cursor: default;
  user-select: none;
}

.nav-list {
  display: flex;
  gap: 10px;
  align-items: center;
}

.nav-list a {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 8px;
  transition: all var(--transition);
}

.nav-list a:hover {
  color: var(--accent);
  background: rgba(0, 212, 255, 0.08);
}

/* Burger */
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
}

.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: all var(--transition);
}

.burger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.burger.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.burger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===========================
   HERO
=========================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, rgba(123, 47, 255, 0.22) 0%, transparent 65%),
    radial-gradient(ellipse 50% 40% at 80% 70%, rgba(0, 212, 255, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse 40% 35% at 15% 75%, rgba(255, 79, 123, 0.1) 0%, transparent 55%);
  animation: heroPulse 8s ease-in-out infinite alternate;
}

@keyframes heroPulse {
  0% { opacity: 0.7; transform: scale(1); }
  100% { opacity: 1; transform: scale(1.04); }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 120px 20px 80px;
}

.hero-content h1 {
  font-size: clamp(1.9rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #fff 0%, var(--accent) 50%, var(--accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeUp 0.8s ease both;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 40px;
  animation: fadeUp 0.8s 0.15s ease both;
}

.btn-main {
  display: inline-block;
  padding: 16px 44px;
  background: linear-gradient(90deg, var(--accent2), var(--accent));
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  border-radius: 50px;
  letter-spacing: 0.5px;
  box-shadow: 0 0 40px rgba(123, 47, 255, 0.45);
  transition: all var(--transition);
  animation: fadeUp 0.8s 0.3s ease both;
}

.btn-main:hover {
  transform: translateY(-3px) scale(1.04);
  box-shadow: 0 0 60px rgba(0, 212, 255, 0.5);
  color: #fff;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===========================
   SECTIONS
=========================== */
.section {
  padding: 90px 0;
}

.section-dark {
  background: var(--bg-mid);
}

.section h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  margin-bottom: 16px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-intro {
  color: var(--text-muted);
  max-width: 780px;
  margin-bottom: 48px;
  font-size: 1.05rem;
}

/* ===========================
   CARDS
=========================== */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: all var(--transition);
}

.card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: 0 12px 40px rgba(0, 212, 255, 0.12);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: #fff;
}

.card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ===========================
   STEPS
=========================== */
.steps {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.step {
  display: flex;
  gap: 28px;
  align-items: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  transition: all var(--transition);
}

.step:hover {
  border-color: var(--accent2);
  box-shadow: 0 8px 32px rgba(123, 47, 255, 0.12);
}

.step-num {
  font-size: 2.4rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  flex-shrink: 0;
  min-width: 54px;
}

.step-body h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 10px;
}

.step-body p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ===========================
   INFO BLOCKS
=========================== */
.info-blocks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.info-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
}

.info-block:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.info-block h3 {
  color: var(--accent);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.info-block p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ===========================
   TWO COL
=========================== */
.two-col {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 40px;
  align-items: start;
}

.col-text h3,
.col-features h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}

.col-text p {
  color: var(--text-muted);
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.feat-icon {
  color: var(--accent);
  font-weight: 700;
}

/* ===========================
   TOR BLOCKS
=========================== */
.tor-blocks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.tor-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  text-align: center;
  transition: all var(--transition);
}

.tor-block:hover {
  border-color: var(--accent2);
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(123, 47, 255, 0.1);
}

.tor-icon {
  font-size: 2.4rem;
  margin-bottom: 18px;
}

.tor-block h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 12px;
}

.tor-block p {
  color: var(--text-muted);
  font-size: 0.93rem;
}

/* ===========================
   COMPARE TABLE
=========================== */
.compare-table {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

.compare-row {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--text-muted);
  gap: 8px;
}

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

.compare-head {
  background: rgba(0, 212, 255, 0.07);
  color: var(--accent);
  font-weight: 600;
  font-size: 0.85rem;
}

/* ===========================
   SAFETY GRID
=========================== */
.safety-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.safety-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
}

.safety-item:hover {
  border-color: var(--accent3);
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(255, 79, 123, 0.1);
}

.s-icon {
  font-size: 1.8rem;
  margin-bottom: 14px;
}

.safety-item h3 {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 10px;
}

.safety-item p {
  color: var(--text-muted);
  font-size: 0.93rem;
}

/* ===========================
   LINK GUIDE
=========================== */
.link-guide {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.link-tip {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
}

.link-tip:hover {
  border-color: var(--accent);
  box-shadow: 0 6px 24px rgba(0, 212, 255, 0.1);
}

.tip-num {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--accent);
  flex-shrink: 0;
  min-width: 30px;
  line-height: 1;
}

.link-tip h3 {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 10px;
}

.link-tip p {
  color: var(--text-muted);
  font-size: 0.93rem;
}

/* ===========================
   FAQ
=========================== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition);
}

.faq-item:hover {
  border-color: var(--accent2);
}

.faq-item summary {
  padding: 22px 28px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #fff;
  font-size: 0.97rem;
  user-select: none;
  transition: color var(--transition);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--accent);
  flex-shrink: 0;
  transition: transform var(--transition);
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item[open] summary {
  color: var(--accent);
}

.faq-item p {
  padding: 0 28px 22px;
  color: var(--text-muted);
  font-size: 0.95rem;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

/* ===========================
   FOOTER
=========================== */
.site-footer {
  background: #080b10;
  border-top: 1px solid var(--border);
  padding: 70px 0 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 50px;
}

.footer-logo {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
}

.footer-col p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer-col h4 {
  color: #fff;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul li,
.footer-col ul li a {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer-col ul li a:hover {
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 22px 20px;
  text-align: center;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ===========================
   FADE-IN ANIMATION
=========================== */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===========================
   RESPONSIVE
=========================== */
@media (max-width: 1024px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .burger {
    display: flex;
  }

  .nav-list {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: rgba(10, 13, 20, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 20px;
    gap: 6px;
    border-bottom: 1px solid var(--border);
  }

  .nav-list.open {
    display: flex;
  }

  .nav-list a {
    padding: 12px 16px;
    font-size: 1rem;
  }

  .step {
    flex-direction: column;
    gap: 16px;
  }

  .step-num {
    font-size: 1.8rem;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .compare-row {
    font-size: 0.82rem;
    padding: 10px 12px;
  }

  .hero-content {
    padding: 100px 20px 60px;
  }

  .section {
    padding: 60px 0;
  }

  .two-col {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .cards,
  .tor-blocks,
  .safety-grid,
  .info-blocks {
    grid-template-columns: 1fr;
  }

  .link-tip {
    flex-direction: column;
    gap: 12px;
  }

  .faq-item summary {
    padding: 18px 20px;
    font-size: 0.9rem;
  }

  .faq-item p {
    padding: 12px 20px 18px;
  }
}