/* ============================================
   飞利猫移动WiFi - 全局样式表
   域名: flm.172hk.cc
   ============================================ */

:root {
  --primary: #3b82f6;
  --primary-light: #60a5fa;
  --primary-dark: #2563eb;
  --ice: #e0f2fe;
  --ice-deep: #bae6fd;
  --violet: #8b5cf6;
  --violet-light: #a78bfa;
  --bg-start: #f4f9ff;
  --bg-end: #e8f2fe;
  --glass: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.5);
  --text-main: #1e293b;
  --text-sub: #64748b;
  --shadow: 0 8px 32px rgba(59, 130, 246, 0.12);
  --shadow-hover: 0 16px 48px rgba(59, 130, 246, 0.2);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Inter", "SF Pro Display", -apple-system, sans-serif;
  color: var(--text-main);
  background: linear-gradient(135deg, var(--bg-start) 0%, var(--bg-end) 100%);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--primary-light); border-radius: 3px; }
::selection { background: var(--ice-deep); color: var(--primary-dark); }

.flow-bg {
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  z-index: -2;
  overflow: hidden;
  pointer-events: none;
}
.flow-line {
  position: absolute;
  width: 200%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary-light), var(--violet-light), transparent);
  opacity: 0.25;
  animation: flowMove 8s linear infinite;
}
.flow-line:nth-child(1) { top: 15%; animation-delay: 0s; }
.flow-line:nth-child(2) { top: 35%; animation-delay: -2s; animation-duration: 10s; }
.flow-line:nth-child(3) { top: 55%; animation-delay: -4s; animation-duration: 12s; }
.flow-line:nth-child(4) { top: 75%; animation-delay: -6s; animation-duration: 9s; }
.flow-line:nth-child(5) { top: 90%; animation-delay: -1s; animation-duration: 11s; }

@keyframes flowMove {
  0% { transform: translateX(-50%); }
  100% { transform: translateX(0%); }
}

.dot-grid {
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  z-index: -1;
  pointer-events: none;
  background-image: radial-gradient(circle, var(--primary-light) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.08;
}

.pulse-dot {
  position: absolute;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--primary-light);
  box-shadow: 0 0 12px var(--primary-light);
  animation: pulse 3s ease-in-out infinite;
}
.pulse-dot:nth-child(6) { top: 20%; left: 10%; animation-delay: 0s; }
.pulse-dot:nth-child(7) { top: 60%; left: 80%; animation-delay: 1s; background: var(--violet-light); box-shadow: 0 0 12px var(--violet-light); }
.pulse-dot:nth-child(8) { top: 40%; left: 50%; animation-delay: 2s; }

@keyframes pulse {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.5); }
}

.site-header {
  position: fixed;
  top: 0; left: 0; width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition);
}
.site-header.scrolled {
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 2px 20px rgba(0,0,0,0.06);
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--violet));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
}
.logo-icon svg { width: 22px; height: 22px; }
.logo-text {
  font-size: 20px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-dark), var(--violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.desktop-nav { display: flex; gap: 6px; }
.desktop-nav a {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-sub);
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}
.desktop-nav a:hover, .desktop-nav a.active {
  color: var(--primary);
  background: rgba(59, 130, 246, 0.08);
}
.desktop-nav a.active::after {
  content: '';
  position: absolute;
  bottom: 2px; left: 50%;
  transform: translateX(-50%);
  width: 16px; height: 2px;
  background: var(--primary);
  border-radius: 1px;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none; border: none;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.mobile-menu {
  display: none;
  position: fixed;
  top: 64px; left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: 16px 24px;
  flex-direction: column;
  gap: 4px;
  z-index: 999;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-main);
  font-size: 16px;
  font-weight: 500;
  transition: var(--transition);
}
.mobile-menu a:hover, .mobile-menu a.active {
  background: rgba(59, 130, 246, 0.08);
  color: var(--primary);
}

.bottom-nav {
  display: none;
  position: fixed;
  bottom: 0; left: 0;
  width: 100%;
  height: 60px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--glass-border);
  z-index: 1000;
  justify-content: space-around;
  align-items: center;
  padding: 0 8px;
}
.bottom-nav a {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  text-decoration: none;
  color: var(--text-sub);
  font-size: 11px;
  padding: 6px 12px;
  border-radius: 12px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.bottom-nav a svg {
  width: 22px; height: 22px;
  stroke: var(--text-sub);
  transition: var(--transition);
}
.bottom-nav a.active, .bottom-nav a:hover {
  color: var(--primary);
}
.bottom-nav a.active svg, .bottom-nav a:hover svg {
  stroke: var(--primary);
}
.bottom-nav a.active {
  background: rgba(59, 130, 246, 0.08);
}
.bottom-nav a .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(59, 130, 246, 0.2);
  transform: scale(0);
  animation: rippleAnim 0.5s linear;
  pointer-events: none;
}
@keyframes rippleAnim {
  to { transform: scale(4); opacity: 0; }
}

.glass-card {
  background: var(--glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
  overflow: hidden;
}
.glass-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(59, 130, 246, 0.2);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.35);
}
.btn-primary:hover {
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.45);
  transform: translateY(-1px);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary-light);
}
.btn-outline:hover {
  background: rgba(59, 130, 246, 0.08);
  border-color: var(--primary);
}
.btn-ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.35);
  transform: scale(0);
  animation: rippleAnim 0.6s linear;
  pointer-events: none;
}

.page-main { padding-top: 64px; }
.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 24px;
}
.section-title {
  font-size: 32px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--text-main), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-subtitle {
  text-align: center;
  color: var(--text-sub);
  font-size: 16px;
  margin-bottom: 48px;
}

.copy-toast {
  position: fixed;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  background: rgba(30, 41, 59, 0.9);
  color: #fff;
  padding: 12px 24px;
  border-radius: 50px;
  font-size: 14px;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}
.copy-toast.show {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.site-footer {
  background: linear-gradient(180deg, transparent, rgba(59, 130, 246, 0.04));
  border-top: 1px solid var(--glass-border);
  padding: 48px 24px 24px;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}
.footer-brand .logo-text { font-size: 22px; margin-bottom: 12px; display: inline-block; }
.footer-brand p {
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.8;
  margin-top: 8px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-main);
}
.footer-col a, .footer-col span {
  display: block;
  color: var(--text-sub);
  text-decoration: none;
  font-size: 14px;
  margin-bottom: 10px;
  cursor: pointer;
  transition: var(--transition);
}
.footer-col a:hover, .footer-col span:hover {
  color: var(--primary);
}
.footer-bottom {
  max-width: 1200px;
  margin: 32px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--glass-border);
  text-align: center;
  color: var(--text-sub);
  font-size: 13px;
}

.modal-overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.modal-overlay.active {
  display: flex;
  opacity: 1;
}
.modal-content {
  background: var(--glass);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  max-width: 720px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  padding: 32px;
  position: relative;
  transform: translateY(20px);
  transition: transform 0.3s ease;
  box-shadow: var(--shadow-hover);
}
.modal-overlay.active .modal-content {
  transform: translateY(0);
}
.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 36px; height: 36px;
  border-radius: 50%;
  border: none;
  background: rgba(0,0,0,0.05);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.modal-close:hover { background: rgba(0,0,0,0.1); }
.modal-close svg { width: 18px; height: 18px; stroke: var(--text-sub); }

.tech-loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 60px;
}
.loader-ring {
  width: 60px; height: 60px;
  border: 3px solid rgba(59, 130, 246, 0.15);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  position: relative;
}
.loader-ring::after {
  content: '';
  position: absolute;
  width: 40px; height: 40px;
  border: 3px solid rgba(139, 92, 246, 0.15);
  border-top-color: var(--violet);
  border-radius: 50%;
  animation: spin 1.5s linear infinite reverse;
  top: 7px; left: 7px;
}
@keyframes spin { to { transform: rotate(360deg); } }
.tech-loader p {
  color: var(--text-sub);
  font-size: 14px;
}

@media (max-width: 1024px) {
  .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .desktop-nav { display: none; }
  .hamburger { display: flex; }
  .bottom-nav { display: flex; }
  .section { padding: 60px 16px; }
  .section-title { font-size: 24px; }
  .footer-inner { grid-template-columns: 1fr; gap: 24px; }
  .page-main { padding-bottom: 70px; }
}
@media (max-width: 480px) {
  .header-inner { padding: 0 16px; height: 56px; }
  .logo-text { font-size: 17px; }
  .section { padding: 48px 12px; }
}

.page-fade-in {
  animation: fadeIn 0.5s ease;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}