/* ===================================================================
   WgetCloud Official Stylesheet
   Theme: Pressurized Quartz-Crystal Luxury UI & Abyssal Oceanic Depth
   Color Codes: Trench Black (#050811), Deep Hydro-Cyan (#0284c7), Prismatic White
   Zero External Dependencies | 100% Native CSS3
   =================================================================== */

/* -------------------------------------------------------------------
   1. Design Tokens & Theme Variables
   ------------------------------------------------------------------- */
:root {
  /* Daylight Crystalline Palette (Default: Light Mode) */
  --bg-abyss: #f0f7ff;
  --bg-surface: rgba(255, 255, 255, 0.88);
  --bg-surface-elevated: #ffffff;
  --bg-subtle: #e8f2fc;
  
  --text-primary: #07152b;
  --text-secondary: #2c4768;
  --text-muted: #5e7c9f;
  --text-inverse: #ffffff;

  /* Optical Quartz & Hydro-Cyan Spectrum */
  --hydro-cyan: #0284c7;
  --hydro-cyan-bright: #0ea5e9;
  --hydro-cyan-glow: rgba(2, 132, 199, 0.22);
  --hydro-cyan-deep: #0369a1;

  --prism-highlight: #ffffff;
  --prism-violet: #818cf8;
  --prism-magenta: #c084fc;
  --caustic-color: rgba(2, 132, 199, 0.12);

  /* Snell's Law Optical Quartz Borders & Refractions */
  --quartz-border: rgba(2, 132, 199, 0.22);
  --quartz-border-shine: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(2,132,199,0.4) 45%, rgba(129,140,248,0.3) 100%);
  --quartz-inner-shadow: inset 0 1px 1.5px 0 rgba(255, 255, 255, 0.95), inset 0 -1.5px 3px 0 rgba(2, 132, 199, 0.15);
  --quartz-drop-shadow: 0 12px 36px -8px rgba(7, 21, 43, 0.08), 0 4px 12px -2px rgba(2, 132, 199, 0.06);
  --caustic-ambient: radial-gradient(circle at 50% 0%, rgba(2, 132, 199, 0.08) 0%, transparent 70%);

  /* Navigation */
  --nav-bg: rgba(240, 247, 255, 0.82);
  --nav-border: rgba(2, 132, 199, 0.16);

  /* Accents */
  --accent-emerald: #059669;
  --accent-amber: #d97706;
  --accent-rose: #e11d48;

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-theme: background-color 0.4s ease, color 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}

/* Dark Mode: Abyssal Oceanic Trench (#050811) */
[data-theme="dark"] {
  --bg-abyss: #050811;
  --bg-surface: rgba(9, 17, 34, 0.72);
  --bg-surface-elevated: rgba(14, 25, 48, 0.82);
  --bg-subtle: #091325;

  --text-primary: #f0f8ff;
  --text-secondary: #97b0ce;
  --text-muted: #5e7999;
  --text-inverse: #050811;

  --hydro-cyan: #38bdf8;
  --hydro-cyan-bright: #0ea5e9;
  --hydro-cyan-glow: rgba(56, 189, 248, 0.28);
  --hydro-cyan-deep: #0284c7;

  --prism-highlight: rgba(255, 255, 255, 0.95);
  --prism-violet: #a5b4fc;
  --caustic-color: rgba(56, 189, 248, 0.2);

  --quartz-border: rgba(56, 189, 248, 0.22);
  --quartz-border-shine: linear-gradient(135deg, rgba(255,255,255,0.4) 0%, rgba(56,189,248,0.45) 50%, rgba(165,180,252,0.3) 100%);
  --quartz-inner-shadow: inset 0 1px 2px 0 rgba(255, 255, 255, 0.25), inset 0 -2px 4px 0 rgba(2, 132, 199, 0.35);
  --quartz-drop-shadow: 0 16px 48px -12px rgba(0, 0, 0, 0.7), 0 0 28px rgba(2, 132, 199, 0.15);
  --caustic-ambient: radial-gradient(circle at 50% 0%, rgba(2, 132, 199, 0.16) 0%, transparent 75%);

  --nav-bg: rgba(5, 8, 17, 0.85);
  --nav-border: rgba(56, 189, 248, 0.16);

  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 86px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-abyss);
  color: var(--text-primary);
  line-height: 1.65;
  font-size: 16px;
  overflow-x: hidden;
  transition: var(--transition-theme);
  background-image: 
    radial-gradient(ellipse 90% 40% at 50% 0%, var(--hydro-cyan-glow) 0%, transparent 60%),
    linear-gradient(180deg, transparent 0%, rgba(2, 132, 199, 0.02) 100%);
  min-height: 100vh;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  width: 100%;
  max-width: 1220px;
  margin: 0 auto;
  padding: 0 24px;
}

/* -------------------------------------------------------------------
   3. Pressurized Quartz Slab Primitive
   ------------------------------------------------------------------- */
.quartz-slab {
  background: var(--bg-surface);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  border: 1px solid var(--quartz-border);
  box-shadow: var(--quartz-drop-shadow), var(--quartz-inner-shadow);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
  transform-style: preserve-3d;
  will-change: transform;
}

/* Prismatic Snell's Law Edge Glint */
.quartz-slab::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1.5px;
  background: var(--quartz-border-shine);
  opacity: 0.8;
  pointer-events: none;
}

/* Underwater Caustic Refraction Effect Layer */
.quartz-slab .caustic-ray {
  position: absolute;
  top: -60%;
  left: -60%;
  width: 220%;
  height: 220%;
  background: radial-gradient(circle 240px at var(--mouse-x, 50%) var(--mouse-y, 50%), var(--caustic-color), transparent 70%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 0;
}

.quartz-slab:hover .caustic-ray {
  opacity: 1;
}

/* -------------------------------------------------------------------
   4. Site Header & Glass Navigation Bar
   ------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(18px) saturate(190%);
  -webkit-backdrop-filter: blur(18px) saturate(190%);
  border-bottom: 1px solid var(--nav-border);
  transition: var(--transition-theme);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.38rem;
  font-weight: 850;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  flex-shrink: 0;
}

.brand-quartz-gem {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 50%, #4338ca 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 4px 18px rgba(2, 132, 199, 0.4), inset 0 1px 2px rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.35);
  position: relative;
  overflow: hidden;
}

.brand-quartz-gem::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 50%;
  background: linear-gradient(180deg, rgba(255,255,255,0.45) 0%, transparent 100%);
}

.brand-name {
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--hydro-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Nav directory list */
.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 22px;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-secondary);
  position: relative;
  padding: 8px 4px;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--hydro-cyan);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0%;
  height: 2px;
  background: linear-gradient(90deg, var(--hydro-cyan), var(--prism-violet));
  border-radius: 2px;
  transition: width var(--transition-normal), left var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
  left: 0;
}

/* "推荐资讯" Special Refractive Pill in Nav */
.nav-badge-pill {
  background: rgba(2, 132, 199, 0.1);
  border: 1px solid var(--quartz-border);
  padding: 5px 12px;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--hydro-cyan);
  font-weight: 700;
}

.nav-badge-pill:hover {
  background: rgba(2, 132, 199, 0.18);
  border-color: var(--hydro-cyan);
  box-shadow: 0 0 14px var(--hydro-cyan-glow);
}

.nav-badge-pill .pulse-radar-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--hydro-cyan-bright);
  box-shadow: 0 0 8px var(--hydro-cyan-bright);
  animation: pulse-telemetry 2s infinite ease-in-out;
}

@keyframes pulse-telemetry {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.8); }
}

.mobile-cta-item {
  display: none;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* Translucent Crystal Theme Toggle */
.theme-toggle-btn {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  border: 1px solid var(--quartz-border);
  background: var(--bg-surface);
  backdrop-filter: blur(10px);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-normal);
  position: relative;
  box-shadow: var(--quartz-drop-shadow);
}

.theme-toggle-btn:hover {
  color: var(--hydro-cyan);
  border-color: var(--hydro-cyan);
  transform: translateY(-2px);
  box-shadow: 0 0 16px var(--hydro-cyan-glow);
}

.theme-toggle-btn svg {
  width: 20px;
  height: 20px;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.25s ease;
}

.theme-toggle-btn .moon-icon {
  position: absolute;
  opacity: 0;
  transform: rotate(90deg) scale(0.6);
}

.theme-toggle-btn .sun-icon {
  opacity: 1;
  transform: rotate(0) scale(1);
}

[data-theme="dark"] .theme-toggle-btn .sun-icon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.6);
}

[data-theme="dark"] .theme-toggle-btn .moon-icon {
  opacity: 1;
  transform: rotate(0) scale(1);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 0.94rem;
  font-weight: 650;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  white-space: nowrap;
  line-height: 1.25;
}

.btn-primary {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 60%, #4338ca 100%);
  color: #ffffff !important;
  border: 1px solid rgba(255, 255, 255, 0.35);
  box-shadow: 0 4px 18px rgba(2, 132, 199, 0.35), inset 0 1px 1px rgba(255, 255, 255, 0.6);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 26px rgba(2, 132, 199, 0.55), inset 0 1px 2px rgba(255, 255, 255, 0.8);
}

.btn-outline {
  border: 1px solid var(--quartz-border);
  color: var(--text-primary);
  background: var(--bg-surface);
  backdrop-filter: blur(12px);
  box-shadow: var(--quartz-drop-shadow);
}

.btn-outline:hover {
  border-color: var(--hydro-cyan);
  color: var(--hydro-cyan);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--hydro-cyan-glow);
}

.btn-lg {
  padding: 14px 34px;
  font-size: 1.05rem;
  border-radius: var(--radius-lg);
}

.mobile-toggle-btn {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  border: 1px solid var(--quartz-border);
  color: var(--text-primary);
  align-items: center;
  justify-content: center;
}

/* -------------------------------------------------------------------
   5. Hero Section (Headline with BRAND_NAME + Subtitle Intro)
   ------------------------------------------------------------------- */
.hero-section {
  position: relative;
  padding: 95px 0 75px;
  text-align: center;
  overflow: hidden;
}

/* Undersea 10000Mbps Fiber Grid & Deep Caustic Optical Background */
.hero-telemetry-grid {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(ellipse 65% 55% at 50% 10%, var(--hydro-cyan-glow) 0%, transparent 70%),
    linear-gradient(rgba(2, 132, 199, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(2, 132, 199, 0.05) 1px, transparent 1px);
  background-size: 100% 100%, 48px 48px, 48px 48px;
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 18px;
  background: var(--bg-surface);
  border: 1px solid var(--quartz-border);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--hydro-cyan);
  box-shadow: var(--quartz-drop-shadow), inset 0 1px 1px rgba(255, 255, 255, 0.5);
  margin-bottom: 24px;
  backdrop-filter: blur(14px);
}

.hero-badge .ping-light {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 10px #10b981;
}

/* Hero Headline MUST contain WgetCloud */
.hero-headline {
  font-size: clamp(2.3rem, 5.2vw, 3.8rem);
  font-weight: 850;
  line-height: 1.18;
  letter-spacing: -0.03em;
  margin-bottom: 22px;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
  color: var(--text-primary);
}

.hero-brand-highlight {
  background: linear-gradient(135deg, #0284c7 0%, #38bdf8 50%, #818cf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.hero-subtitle {
  font-size: clamp(1.08rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 760px;
  margin: 0 auto 38px;
  line-height: 1.75;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.hero-telemetry-strip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.hero-strip-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-strip-item svg {
  color: var(--hydro-cyan);
  width: 17px;
  height: 17px;
}

/* Hero Heavy Quartz Telemetry Slab */
.hero-stats-slab {
  margin-top: 55px;
  padding: 34px 44px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.stat-metric {
  text-align: center;
}

.stat-number {
  font-size: 2.15rem;
  font-weight: 850;
  color: var(--text-primary);
  line-height: 1.1;
  margin-bottom: 6px;
  font-feature-settings: "tnum";
}

.stat-number span {
  color: var(--hydro-cyan);
  font-size: 1.35rem;
  font-weight: 700;
}

.stat-title {
  font-size: 0.86rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* -------------------------------------------------------------------
   6. Sections General & Transition Feedback
   ------------------------------------------------------------------- */
.section {
  padding: 95px 0;
  position: relative;
  transition: background-color var(--transition-normal);
}

.section:target {
  animation: anchor-refraction-pulse 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes anchor-refraction-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(2, 132, 199, 0.4);
  }
  50% {
    box-shadow: 0 0 80px 20px rgba(2, 132, 199, 0.15);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(2, 132, 199, 0);
  }
}

.section-bg-deep {
  background: var(--bg-subtle);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 58px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--hydro-cyan);
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(1.85rem, 3.6vw, 2.6rem);
  font-weight: 850;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.28;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* -------------------------------------------------------------------
   7. Product Core Advantages (3 Thick Quartz Cards)
   No Generic AI Bot Icons: High-Tech Prismatic Telecommunications
   ------------------------------------------------------------------- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.advantage-slab {
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
}

.advantage-slab:hover {
  transform: translateY(-8px) scale(1.01);
  border-color: var(--hydro-cyan);
  box-shadow: 0 24px 48px -12px rgba(2, 132, 199, 0.28), var(--quartz-inner-shadow);
}

.optic-icon-chamber {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 26px;
  border: 1px solid var(--quartz-border);
  box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.4);
}

.optic-icon-chamber.cyan {
  background: rgba(2, 132, 199, 0.12);
  color: var(--hydro-cyan);
}

.optic-icon-chamber.indigo {
  background: rgba(99, 102, 241, 0.12);
  color: #6366f1;
}

.optic-icon-chamber.prism {
  background: rgba(14, 165, 233, 0.12);
  color: #0ea5e9;
}

.advantage-title {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 14px;
  color: var(--text-primary);
}

.advantage-desc {
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 22px;
  flex-grow: 1;
}

.advantage-checklist {
  list-style: none;
  padding-top: 18px;
  border-top: 1px solid var(--quartz-border);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.advantage-check-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.advantage-check-item svg {
  color: var(--hydro-cyan);
  flex-shrink: 0;
}

/* -------------------------------------------------------------------
   8. Streaming & AI Showcase (Intense Caustic Light Beam)
   ------------------------------------------------------------------- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 34px;
}

.showcase-slab {
  padding: 44px;
  display: flex;
  flex-direction: column;
}

.showcase-slab:hover {
  transform: translateY(-6px);
  border-color: var(--hydro-cyan);
  box-shadow: 0 24px 50px -10px rgba(2, 132, 199, 0.35), var(--quartz-inner-shadow);
}

.showcase-slab-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}

.showcase-badge-pill {
  font-size: 0.8rem;
  font-weight: 750;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
}

.pill-streaming {
  background: rgba(225, 29, 72, 0.12);
  border-color: rgba(225, 29, 72, 0.25);
  color: #e11d48;
}

.pill-ai {
  background: rgba(2, 132, 199, 0.12);
  border-color: rgba(2, 132, 199, 0.25);
  color: var(--hydro-cyan);
}

.showcase-slab-title {
  font-size: 1.6rem;
  font-weight: 850;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.showcase-slab-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 30px;
}

/* Refractive Service Tile Matrix */
.service-tile-matrix {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 30px;
}

.service-tile {
  background: var(--bg-surface);
  border: 1px solid var(--quartz-border);
  border-radius: var(--radius-md);
  padding: 13px 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all var(--transition-fast);
}

.service-tile:hover {
  border-color: var(--hydro-cyan);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px var(--hydro-cyan-glow);
}

.service-optic-badge {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 850;
  font-size: 0.84rem;
  color: #ffffff;
  flex-shrink: 0;
}

.service-tile-text {
  display: flex;
  flex-direction: column;
}

.service-tile-name {
  font-size: 0.88rem;
  font-weight: 750;
  color: var(--text-primary);
  line-height: 1.2;
}

.service-tile-desc {
  font-size: 0.74rem;
  color: var(--text-muted);
}

.showcase-perks {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid var(--quartz-border);
  margin-top: auto;
}

.showcase-perk-item {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.showcase-perk-item svg {
  color: var(--hydro-cyan);
  flex-shrink: 0;
}

/* -------------------------------------------------------------------
   9. Pricing Table (Real WgetCloud Tier Reference)
   基础专线 ¥59/月起、优质专线 ¥89/月起、精品专线 ¥99/月起
   ------------------------------------------------------------------- */
.pricing-matrix {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  align-items: stretch;
  padding-top: 26px;
}

.pricing-slab {
  padding: 44px 34px 38px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: visible !important;
}

.pricing-slab .caustic-ray {
  clip-path: inset(0 round var(--radius-xl));
  -webkit-clip-path: inset(0 round var(--radius-xl));
}

.pricing-slab:hover {
  transform: translateY(-8px);
  border-color: var(--hydro-cyan);
  box-shadow: 0 24px 50px -10px rgba(2, 132, 199, 0.3), var(--quartz-inner-shadow);
}

.pricing-slab.featured {
  border: 2px solid var(--hydro-cyan);
  box-shadow: 0 20px 48px -8px var(--hydro-cyan-glow), var(--quartz-inner-shadow);
  transform: scale(1.03);
  z-index: 5;
  overflow: visible !important;
}

.pricing-slab.featured:hover {
  transform: scale(1.03) translateY(-8px);
}

.featured-prism-ribbon {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 50%, #4338ca 100%);
  color: #ffffff;
  font-size: 0.8rem;
  font-weight: 800;
  padding: 6px 20px;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  white-space: nowrap !important;
  box-shadow: 0 4px 18px rgba(2, 132, 199, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.55);
  z-index: 10;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  line-height: 1.2;
}

.ribbon-pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #38bdf8;
  box-shadow: 0 0 8px #38bdf8;
  display: inline-block;
  animation: pulse-telemetry 2s infinite ease-in-out;
}

.pricing-slab-header {
  margin-bottom: 22px;
}

.plan-tier-name {
  font-size: 1.4rem;
  font-weight: 850;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.plan-tier-summary {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.plan-price-block {
  display: flex;
  align-items: baseline;
  gap: 5px;
  margin: 22px 0 26px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--quartz-border);
}

.plan-currency {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
}

.plan-figure {
  font-size: 3.2rem;
  font-weight: 900;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  line-height: 1;
}

.plan-cycle {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.plan-checklist {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 34px;
  flex-grow: 1;
}

.plan-check-row {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 0.93rem;
  color: var(--text-secondary);
}

.plan-check-row svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.plan-check-row.active svg {
  color: var(--hydro-cyan);
}

.plan-check-row.inactive {
  color: var(--text-muted);
  opacity: 0.65;
}

.pricing-slab .btn {
  width: 100%;
}

.pricing-disclaimer {
  text-align: center;
  margin-top: 36px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* -------------------------------------------------------------------
   10. User Testimonials & FAQ
   ------------------------------------------------------------------- */
.testimonials-matrix {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.testimonial-slab {
  padding: 34px;
  display: flex;
  flex-direction: column;
}

.testimonial-slab:hover {
  transform: translateY(-5px);
  border-color: var(--hydro-cyan);
}

.testimonial-stars {
  display: flex;
  gap: 4px;
  color: var(--accent-amber);
  margin-bottom: 16px;
}

.testimonial-text {
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.72;
  margin-bottom: 24px;
  flex-grow: 1;
}

.testimonial-author-block {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 18px;
  border-top: 1px solid var(--quartz-border);
}

.author-monogram {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0284c7 0%, #4338ca 100%);
  color: #ffffff;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.35);
  flex-shrink: 0;
}

.author-name {
  font-size: 0.95rem;
  font-weight: 750;
  color: var(--text-primary);
}

.author-title {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* FAQ Accordion */
.faq-slab-wrapper {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-entry {
  transition: all var(--transition-normal);
}

.faq-trigger {
  width: 100%;
  padding: 24px 28px;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  font-size: 1.06rem;
  font-weight: 750;
  color: var(--text-primary);
  background: transparent;
  transition: color var(--transition-fast);
}

.faq-trigger:hover {
  color: var(--hydro-cyan);
}

.faq-arrow {
  width: 22px;
  height: 22px;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: transform 0.32s cubic-bezier(0.16, 1, 0.3, 1);
}

.faq-entry.active .faq-arrow {
  transform: rotate(180deg);
  color: var(--hydro-cyan);
}

.faq-drawer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.36s cubic-bezier(0.16, 1, 0.3, 1);
}

.faq-drawer-content {
  padding: 0 28px 24px;
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* -------------------------------------------------------------------
   11. Bottom CTA Banner
   ------------------------------------------------------------------- */
.bottom-cta-slab {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 50%, #312e81 100%);
  padding: 65px 48px;
  text-align: center;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.35);
  box-shadow: 0 24px 60px rgba(2, 132, 199, 0.4), inset 0 1px 2px rgba(255, 255, 255, 0.6);
}

.bottom-cta-slab h2 {
  font-size: clamp(2rem, 3.8vw, 2.7rem);
  font-weight: 850;
  margin-bottom: 16px;
}

.bottom-cta-slab p {
  font-size: 1.12rem;
  max-width: 660px;
  margin: 0 auto 34px;
  opacity: 0.94;
  line-height: 1.7;
}

.cta-white-btn {
  background: #ffffff !important;
  color: #0369a1 !important;
  font-size: 1.05rem;
  padding: 15px 36px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.cta-white-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

/* -------------------------------------------------------------------
   12. Footer (STRICT: Only 4 Titles, Opening in New Page)
   ------------------------------------------------------------------- */
.site-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--quartz-border);
  padding: 55px 0 38px;
  transition: var(--transition-theme);
}

.footer-inner-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 38px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--quartz-border);
  flex-wrap: wrap;
  gap: 24px;
}

.footer-brand-meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-slogan {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* STRICT RULE: FOOTER ONLY RETAINS 4 TITLES */
.footer-nav-exact {
  display: flex;
  align-items: center;
  gap: 34px;
  list-style: none;
  flex-wrap: wrap;
}

.footer-link-exact {
  font-size: 0.95rem;
  font-weight: 650;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.footer-link-exact:hover {
  color: var(--hydro-cyan);
}

.footer-link-exact svg {
  width: 14px;
  height: 14px;
  opacity: 0.6;
}

.footer-inner-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.86rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 14px;
}

.footer-domain-tag {
  font-family: monospace;
  color: var(--text-secondary);
}

/* -------------------------------------------------------------------
   13. Secondary Content Pages & Articles ("推荐资讯", About, Terms, etc.)
   ------------------------------------------------------------------- */
.subpage-banner {
  padding: 68px 0 44px;
  text-align: center;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--quartz-border);
}

.subpage-category {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--hydro-cyan);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.subpage-main-title {
  font-size: clamp(2.1rem, 4.2vw, 2.9rem);
  font-weight: 850;
  color: var(--text-primary);
  margin-bottom: 14px;
}

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

.article-feed-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-top: 36px;
}

.article-card {
  padding: 34px;
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-5px);
  border-color: var(--hydro-cyan);
  box-shadow: 0 20px 40px var(--hydro-cyan-glow);
}

.article-tag {
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--hydro-cyan);
  background: rgba(2, 132, 199, 0.1);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  align-self: flex-start;
  margin-bottom: 16px;
}

.article-headline {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.4;
}

.article-excerpt {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.68;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-meta {
  font-size: 0.84rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--quartz-border);
}

/* -------------------------------------------------------------------
   13.1 Long-Form SEO Article Detailed Typography & Layout
   ------------------------------------------------------------------- */
.article-detail-wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.86rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.article-breadcrumb a {
  color: var(--hydro-cyan);
  transition: color var(--transition-fast);
}

.article-breadcrumb a:hover {
  text-decoration: underline;
}

.article-header-slab {
  padding: 44px;
  margin-bottom: 34px;
}

.article-title-h1 {
  font-size: clamp(1.8rem, 3.6vw, 2.45rem);
  font-weight: 850;
  line-height: 1.3;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin: 16px 0 20px;
}

.article-info-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.88rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  padding-top: 16px;
  border-top: 1px solid var(--quartz-border);
}

.article-info-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Table of Contents (TOC) */
.article-toc-slab {
  padding: 30px 34px;
  margin-bottom: 34px;
  background: var(--bg-surface);
}

.toc-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  counter-reset: toc-counter;
}

.toc-list li {
  counter-increment: toc-counter;
  font-size: 0.94rem;
}

.toc-list li a {
  color: var(--text-secondary);
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  transition: color var(--transition-fast);
}

.toc-list li a::before {
  content: counter(toc-counter) ".";
  color: var(--hydro-cyan);
  font-weight: 750;
}

.toc-list li a:hover {
  color: var(--hydro-cyan);
  text-decoration: underline;
}

/* Article Body Typography */
.article-body-slab {
  padding: 48px 42px;
  margin-bottom: 36px;
}

.article-body-slab h2 {
  font-size: 1.6rem;
  font-weight: 850;
  color: var(--text-primary);
  margin: 38px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--quartz-border);
  letter-spacing: -0.02em;
  scroll-margin-top: 90px;
}

.article-body-slab h2:first-of-type {
  margin-top: 0;
}

.article-body-slab h3 {
  font-size: 1.25rem;
  font-weight: 750;
  color: var(--text-primary);
  margin: 28px 0 12px;
  scroll-margin-top: 90px;
}

.article-body-slab p {
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.article-body-slab ul,
.article-body-slab ol {
  margin: 0 0 24px 28px;
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 1rem;
}

.article-body-slab li {
  margin-bottom: 10px;
}

.article-body-slab a {
  color: var(--hydro-cyan);
  font-weight: 650;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-body-slab a:hover {
  color: var(--hydro-cyan-bright);
}

.article-callout {
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 26px 0;
  line-height: 1.75;
  font-size: 0.95rem;
}

.article-callout.tip {
  background: rgba(2, 132, 199, 0.08);
  border-left: 4px solid var(--hydro-cyan);
  color: var(--text-primary);
}

.article-callout.warning {
  background: rgba(245, 158, 11, 0.08);
  border-left: 4px solid var(--accent-amber);
  color: var(--text-primary);
}

/* Article Comparison Table */
.article-table-wrap {
  overflow-x: auto;
  margin: 28px 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--quartz-border);
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}

.article-table th {
  background: var(--bg-subtle);
  padding: 14px 18px;
  font-weight: 750;
  color: var(--text-primary);
  border-bottom: 1px solid var(--quartz-border);
}

.article-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--quartz-border);
  color: var(--text-secondary);
}

.article-table tr:last-child td {
  border-bottom: none;
}

.article-table tr:hover td {
  background: rgba(2, 132, 199, 0.04);
}

/* FAQ Section Inside Article */
.article-faq-wrap {
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid var(--quartz-border);
}

.article-faq-q {
  font-size: 1.15rem;
  font-weight: 750;
  color: var(--text-primary);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-faq-a {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 24px;
}

/* Related Reading Cluster */
.related-reading-section {
  margin-top: 40px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 18px;
}

.related-item-slab {
  padding: 24px;
  display: flex;
  flex-direction: column;
}

.related-item-slab:hover {
  transform: translateY(-4px);
  border-color: var(--hydro-cyan);
}

.related-title {
  font-size: 1.05rem;
  font-weight: 750;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.45;
}

.related-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  flex-grow: 1;
}

/* -------------------------------------------------------------------
   14. Responsive Queries (@media)
   ------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero-stats-slab {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    padding: 28px;
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-matrix {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
    padding-top: 26px;
    gap: 36px;
  }

  .pricing-slab.featured {
    transform: none;
    overflow: visible !important;
  }

  .pricing-slab.featured:hover {
    transform: translateY(-6px);
  }

  .testimonials-matrix {
    grid-template-columns: repeat(2, 1fr);
  }

  .article-feed-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .nav-container {
    height: 68px;
    padding: 0 16px;
  }

  .mobile-toggle-btn {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--bg-surface-elevated);
    border-bottom: 1px solid var(--quartz-border);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
  }

  .nav-links.active {
    display: flex;
  }

  .mobile-cta-item {
    display: block;
    width: 100%;
    margin-top: 8px;
    padding-top: 14px;
    border-top: 1px solid var(--quartz-border);
  }

  .mobile-cta-item .btn {
    display: inline-flex !important;
    width: 100%;
    min-height: 46px;
  }

  .nav-actions .btn {
    display: none;
  }

  .hero-section {
    padding: 55px 0 45px;
  }

  .hero-headline {
    font-size: 2.2rem;
  }

  .hero-subtitle {
    font-size: 1.02rem;
    margin-bottom: 30px;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }

  .hero-cta-group .btn {
    width: 100%;
    min-height: 48px;
  }

  .hero-stats-slab {
    grid-template-columns: 1fr 1fr;
    padding: 22px 18px;
    gap: 18px;
  }

  .stat-number {
    font-size: 1.7rem;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .grid-2 {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .showcase-slab {
    padding: 28px 22px;
  }

  .service-tile-matrix {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .testimonials-matrix {
    grid-template-columns: 1fr;
  }

  .footer-inner-top {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }

  .footer-nav-exact {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    width: 100%;
  }

  .footer-inner-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .bottom-cta-slab {
    padding: 42px 24px;
  }
}

@media (max-width: 480px) {
  .hero-stats-slab {
    grid-template-columns: 1fr;
    text-align: left;
  }

  .stat-metric {
    text-align: left;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--quartz-border);
    padding-bottom: 10px;
  }

  .stat-metric:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }

  .service-tile-matrix {
    grid-template-columns: 1fr;
  }
}