/* 
  Beijing Zhili IoT Technology Co., Ltd. (北京智锂物联科技有限公司)
  Official Website - Ice-Morphism Tech Theme Stylesheet
  Domain: fast-fun.cn | ICP: 京ICP备2025088219号-1
*/

/* -------------------------------------------------------------
   1. Design Tokens & CSS Variables
------------------------------------------------------------- */
:root {
  /* Brand Palette (derived from logo.svg gradient stops) */
  --color-primary: #1E74B0;       /* Cobalt Blue */
  --color-accent: #3A9BD6;        /* Mid Sky Blue */
  --color-ice-light: #8ED4F0;     /* Ice Light Blue */
  --color-primary-dark: #155786;  /* Deep Royal Blue */
  --color-primary-light: #e0f2fe; /* Sky Light 50 */
  
  /* Semantic Status Colors */
  --color-success: #10b981;       /* Emerald Green (Healthy) */
  --color-warning: #f59e0b;       /* Amber Orange (Alert) */
  --color-error: #ef4444;         /* Rose Red (Fault) */
  
  /* Neutrals */
  --color-bg-base: #f4f9fd;        /* Ice-cream off-white */
  --color-bg-light: #ffffff;
  --color-text-main: #1e293b;     /* Slate 800 */
  --color-text-muted: #475569;    /* Slate 600 */
  --color-text-light: #64748b;    /* Slate 500 */
  --color-white: #ffffff;
  
  /* Glassmorphism/Ice-morphism Specifications */
  --glass-bg: rgba(255, 255, 255, 0.75);
  --glass-bg-dark: rgba(15, 30, 45, 0.03);
  --glass-border: rgba(142, 212, 240, 0.35);
  --glass-border-focus: rgba(30, 116, 176, 0.5);
  --glass-shadow: 0 8px 32px 0 rgba(30, 116, 176, 0.08);
  --glass-shadow-hover: 0 16px 48px 0 rgba(30, 116, 176, 0.16);
  --glass-filter: blur(12px) saturate(130%);
  
  /* Layout Constants */
  --max-width: 1240px;
  --header-height: 80px;
  --header-height-scroll: 64px;
  --border-radius-sm: 8px;
  --border-radius-md: 16px;
  --border-radius-lg: 24px;
  
  /* Transition Constants */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  color: var(--color-text-main);
  background-color: var(--color-bg-base);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  overflow-x: hidden;
  line-height: 1.6;
}

img, svg {
  display: block;
  max-width: 100%;
}

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

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  outline: none;
}

button {
  cursor: pointer;
}

ul, ol {
  list-style: none;
}

/* Custom Scrollbar for Premium Feel */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg-base);
}
::-webkit-scrollbar-thumb {
  background: var(--color-ice-light);
  border: 2px solid var(--color-bg-base);
  border-radius: var(--border-radius-sm);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent);
}

/* -------------------------------------------------------------
   3. Custom Utility Classes & Animations
------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-filter);
  -webkit-backdrop-filter: var(--glass-filter);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  box-shadow: var(--glass-shadow);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--glass-shadow-hover);
  border-color: rgba(30, 116, 176, 0.35);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes floatSlow {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-15px) rotate(2deg);
  }
}

@keyframes glowPulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
  }
  50% {
    box-shadow: 0 0 12px 6px rgba(16, 185, 129, 0.6);
  }
}

@keyframes shimmerSweep {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.reveal-element {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal-element.active {
  opacity: 1;
  transform: translateY(0);
}

/* -------------------------------------------------------------
   4. Header & Navigation (Translucent / Frosted Glass)
------------------------------------------------------------- */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: height var(--transition-normal), background-color var(--transition-normal), box-shadow var(--transition-normal);
  display: flex;
  align-items: center;
}

header.scrolled {
  height: var(--header-height-scroll);
  background-color: rgba(244, 249, 253, 0.85);
  backdrop-filter: var(--glass-filter);
  -webkit-backdrop-filter: var(--glass-filter);
  box-shadow: 0 4px 20px rgba(30, 116, 176, 0.06);
  border-bottom: 1px solid var(--glass-border);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-image {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.company-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  letter-spacing: 0.5px;
}

.company-english {
  font-size: 0.65rem;
  font-weight: 500;
  text-transform: uppercase;
  color: var(--color-text-light);
  letter-spacing: 1px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2.2rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-muted);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-fast), left var(--transition-fast);
}

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

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

.nav-action {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  color: var(--color-white);
  padding: 0.6rem 1.4rem;
  border-radius: var(--border-radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(30, 116, 176, 0.2);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-action:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(30, 116, 176, 0.3);
}

/* Mobile Hamburger Toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  cursor: pointer;
  z-index: 1001;
}

.mobile-toggle span {
  width: 100%;
  height: 2px;
  background-color: var(--color-primary-dark);
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

/* -------------------------------------------------------------
   5. Hero Section (Dynamic Graphic & Taglines)
------------------------------------------------------------- */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--header-height) + 2rem);
  padding-bottom: 4rem;
  background: radial-gradient(circle at 80% 20%, rgba(142, 212, 240, 0.25) 0%, rgba(240, 247, 255, 0.1) 60%),
              radial-gradient(circle at 10% 80%, rgba(58, 155, 214, 0.12) 0%, rgba(244, 249, 253, 0) 50%);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 3rem;
}

.hero-content {
  animation: fadeInUp 0.8s var(--transition-slow) forwards;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-primary-light);
  border: 1px solid rgba(30, 116, 176, 0.15);
  color: var(--color-primary-dark);
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  letter-spacing: 0.5px;
}

.hero-badge span {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-primary);
  animation: glowPulse 2s infinite;
}

.hero-title {
  font-size: 3.2rem;
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 1.5rem;
  color: var(--color-text-main);
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin-bottom: 2.5rem;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 50%, var(--color-primary) 100%);
  background-size: 200% auto;
  color: var(--color-white);
  padding: 0.9rem 2.2rem;
  border-radius: var(--border-radius-sm);
  font-size: 1rem;
  font-weight: 600;
  box-shadow: 0 4px 20px rgba(30, 116, 176, 0.25);
  transition: var(--transition-normal);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-primary:hover {
  background-position: right center;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(30, 116, 176, 0.35);
}

.btn-secondary {
  border: 1px solid var(--glass-border-focus);
  background: rgba(255, 255, 255, 0.4);
  backdrop-filter: var(--glass-filter);
  color: var(--color-primary-dark);
  padding: 0.9rem 2.2rem;
  border-radius: var(--border-radius-sm);
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition-normal);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.8);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

/* Abstract Tech SVG Vector Graphic for Hero Right */
.hero-graphic-container {
  position: relative;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  animation: fadeInUp 1s var(--transition-slow) 0.2s forwards;
  opacity: 0;
}

.hero-floating-svg {
  width: 100%;
  max-width: 480px;
  animation: floatSlow 6s ease-in-out infinite;
}

.tech-dot {
  animation: glowPulse 3s infinite;
}

/* -------------------------------------------------------------
   6. Live Battery Telemetry Dashboard (Exquisite Component)
------------------------------------------------------------- */
.telemetry-section {
  position: relative;
  padding: 6rem 0;
  background: linear-gradient(180deg, rgba(244, 249, 253, 0) 0%, rgba(224, 242, 254, 0.4) 50%, rgba(244, 249, 253, 0) 100%);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 4rem;
}

.section-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--color-text-main);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--color-text-muted);
}

/* The Dashboard UI Mockup */
.dashboard-card {
  max-width: 900px;
  margin: 0 auto;
  padding: 2.5rem;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: var(--glass-filter);
  -webkit-backdrop-filter: var(--glass-filter);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 12px 40px rgba(30, 116, 176, 0.08);
}

.dashboard-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(142, 212, 240, 0.25);
  padding-bottom: 1.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.dash-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.dash-title-group h4 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.dash-title-group span {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-light);
  letter-spacing: 0.5px;
}

.dash-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(16, 185, 129, 0.1);
  padding: 0.4rem 1rem;
  border-radius: 50px;
  color: var(--color-success);
  font-size: 0.85rem;
  font-weight: 700;
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-success);
  animation: glowPulse 1.8s infinite;
}

.dash-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.dash-btn {
  background: rgba(142, 212, 240, 0.15);
  border: 1px solid rgba(142, 212, 240, 0.3);
  color: var(--color-primary-dark);
  padding: 0.4rem 1rem;
  border-radius: var(--border-radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  transition: var(--transition-fast);
}

.dash-btn:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
}

/* Grid of Dials and Telemetry Stats */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.telemetry-item {
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(142, 212, 240, 0.2);
  border-radius: var(--border-radius-md);
  padding: 1.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.telemetry-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(30, 116, 176, 0.05);
}

.tel-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
}

.tel-val-wrap {
  display: flex;
  justify-content: center;
  align-items: baseline;
  gap: 2px;
}

.tel-value {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  font-variant-numeric: tabular-nums;
  transition: color var(--transition-fast);
}

.tel-unit {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

/* Custom Mini Line Chart / SVG graph mimicking telemetry */
.tel-mini-chart {
  width: 100%;
  height: 40px;
  margin-top: 1rem;
}

.tel-mini-chart path {
  fill: none;
  stroke: var(--color-primary);
  stroke-width: 2;
  stroke-linecap: round;
  transition: stroke var(--transition-fast);
}

/* Specialized colorings for critical parameters */
.telemetry-item.alert .tel-value {
  color: var(--color-warning);
}
.telemetry-item.alert .tel-mini-chart path {
  stroke: var(--color-warning);
}

/* Diagnostics Info at the bottom of Dashboard */
.dashboard-bottom {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  background: rgba(30, 116, 176, 0.04);
  padding: 1.2rem 1.5rem;
  border-radius: var(--border-radius-md);
  border: 1px solid rgba(142, 212, 240, 0.15);
}

.diag-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(30, 116, 176, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  flex-shrink: 0;
}

.diag-content {
  flex-grow: 1;
}

.diag-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 0.2rem;
}

.diag-text {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.diag-badge {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.3rem 0.8rem;
  border-radius: 4px;
  white-space: nowrap;
}

/* -------------------------------------------------------------
   7. Solutions Tab Switcher
------------------------------------------------------------- */
.solutions-section {
  padding: 6rem 0;
  background-color: var(--color-bg-base);
}

.tabs-nav {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3.5rem;
  flex-wrap: wrap;
}

.tab-btn {
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-filter);
  color: var(--color-text-muted);
  padding: 0.8rem 2rem;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(30, 116, 176, 0.03);
  transition: var(--transition-normal);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tab-btn svg {
  width: 18px;
  height: 18px;
  stroke: var(--color-text-muted);
  transition: stroke var(--transition-normal);
}

.tab-btn:hover {
  background: rgba(255, 255, 255, 0.9);
  color: var(--color-primary);
  border-color: var(--color-primary-light);
  transform: translateY(-1px);
}

.tab-btn.active {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  color: var(--color-white);
  border-color: transparent;
  box-shadow: 0 6px 20px rgba(30, 116, 176, 0.2);
}

.tab-btn.active svg {
  stroke: var(--color-white);
}

/* Solutions Content Layout */
.tab-content {
  position: relative;
  min-height: 420px;
}

.tab-pane {
  display: none;
  grid-template-columns: 0.95fr 1.05fr;
  align-items: center;
  gap: 3.5rem;
  animation: fadeInUp 0.5s var(--transition-normal) forwards;
}

.tab-pane.active {
  display: grid;
}

.pane-text {
  display: flex;
  flex-direction: column;
}

.pane-title {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  margin-bottom: 1rem;
  line-height: 1.3;
}

.pane-desc {
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
}

.pane-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.pane-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.pane-feature-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.pane-feature-icon svg {
  width: 14px;
  height: 14px;
  stroke-width: 2.5;
}

.pane-feature-text h5 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 0.2rem;
}

.pane-feature-text p {
  font-size: 0.8rem;
  color: var(--color-text-light);
  line-height: 1.4;
}

/* SVG Illustrative Cards for Tab Pane Right */
.pane-visual {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.pane-illustration {
  width: 100%;
  max-width: 460px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-filter);
  -webkit-backdrop-filter: var(--glass-filter);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  box-shadow: var(--glass-shadow);
}

/* -------------------------------------------------------------
   8. Core Products & Technology
------------------------------------------------------------- */
.products-section {
  padding: 6rem 0;
  background: linear-gradient(180deg, var(--color-bg-base) 0%, rgba(224, 242, 254, 0.25) 50%, var(--color-bg-base) 100%);
}

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

.product-card {
  padding: 2.2rem;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.product-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--border-radius-sm);
  background: linear-gradient(135deg, rgba(142, 212, 240, 0.2) 0%, rgba(30, 116, 176, 0.1) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  margin-bottom: 1.5rem;
}

.product-icon svg {
  width: 28px;
  height: 28px;
}

.product-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  margin-bottom: 0.8rem;
}

.product-desc {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  flex-grow: 1;
}

.product-specs {
  border-top: 1px solid rgba(142, 212, 240, 0.25);
  padding-top: 1.2rem;
}

.spec-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.6rem;
  font-size: 0.85rem;
}

.spec-name {
  color: var(--color-text-light);
  font-weight: 500;
}

.spec-value {
  color: var(--color-text-main);
  font-weight: 700;
}

/* -------------------------------------------------------------
   9. Core Advantages Section
------------------------------------------------------------- */
.advantages-section {
  padding: 6rem 0;
  background-color: var(--color-bg-base);
}

.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.adv-card {
  background: var(--color-bg-light);
  border: 1px solid rgba(142, 212, 240, 0.15);
  border-radius: var(--border-radius-md);
  padding: 2.2rem 1.8rem;
  text-align: center;
  box-shadow: 0 4px 15px rgba(30, 116, 176, 0.02);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.adv-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--glass-shadow-hover);
  border-color: rgba(30, 116, 176, 0.25);
}

.adv-num {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
  font-variant-numeric: tabular-nums;
  display: inline-block;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.adv-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-text-main);
  margin-bottom: 0.75rem;
}

.adv-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* -------------------------------------------------------------
   10. About Us Section
------------------------------------------------------------- */
.about-section {
  padding: 6rem 0;
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--color-bg-base) 0%, rgba(224, 242, 254, 0.3) 100%);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-text {
  display: flex;
  flex-direction: column;
}

.about-p {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 1.5rem;
  border-top: 1px solid rgba(142, 212, 240, 0.25);
  padding-top: 2rem;
}

.about-stat-item h4 {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  margin-bottom: 0.2rem;
}

.about-stat-item p {
  font-size: 0.8rem;
  color: var(--color-text-light);
  font-weight: 600;
}

.about-visual {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Beautiful nested glass card grid styling */
.about-collage {
  position: relative;
  width: 100%;
  max-width: 480px;
  height: 380px;
}

.collage-card {
  position: absolute;
  padding: 1.8rem;
  width: 70%;
  border-radius: var(--border-radius-md);
}

.collage-card.card-1 {
  top: 0;
  left: 0;
  z-index: 3;
  background: rgba(255, 255, 255, 0.85);
}

.collage-card.card-2 {
  bottom: 0;
  right: 0;
  z-index: 2;
  background: rgba(255, 255, 255, 0.65);
  border-color: rgba(142, 212, 240, 0.25);
}

.collage-title {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.collage-desc {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  line-height: 1.35;
}

/* -------------------------------------------------------------
   11. Contact Us (Interactive Form & Location)
------------------------------------------------------------- */
.contact-section {
  padding: 6rem 0;
  background-color: var(--color-bg-base);
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 3.5rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
}

.info-title {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  margin-bottom: 1.5rem;
}

.info-desc {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
}

.info-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.info-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.info-icon svg {
  width: 20px;
  height: 20px;
}

.info-text h5 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 0.2rem;
}

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

/* The Glass Form */
.contact-form-card {
  padding: 3rem;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-filter);
  -webkit-backdrop-filter: var(--glass-filter);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--glass-shadow);
}

.form-title {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  margin-bottom: 1.5rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group.full-width {
  grid-column: span 2;
}

.form-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.form-input {
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(142, 212, 240, 0.35);
  border-radius: var(--border-radius-sm);
  padding: 0.8rem 1rem;
  font-size: 0.9rem;
  transition: var(--transition-fast);
  color: var(--color-text-main);
}

.form-input:focus {
  background: var(--color-white);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 116, 176, 0.12);
}

textarea.form-input {
  resize: vertical;
  min-height: 120px;
}

.form-btn {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  color: var(--color-white);
  font-size: 0.95rem;
  font-weight: 700;
  padding: 0.9rem 2rem;
  border-radius: var(--border-radius-sm);
  box-shadow: 0 4px 15px rgba(30, 116, 176, 0.2);
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
}

.form-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(30, 116, 176, 0.3);
}

/* Success Confirmation Overlay on Form */
.form-success-overlay {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  animation: fadeInUp 0.4s var(--transition-normal) forwards;
}

.form-success-overlay.active {
  display: flex;
}

.success-check-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 1.5rem;
  animation: glowPulse 2s infinite;
}

.success-check-icon svg {
  width: 32px;
  height: 32px;
}

.success-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  margin-bottom: 0.5rem;
}

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

/* -------------------------------------------------------------
   12. Footer (Copyright, Filings, & Security Icons)
------------------------------------------------------------- */
footer {
  background-color: #0d1e2d;
  color: rgba(255, 255, 255, 0.7);
  padding: 5rem 0 2rem 0;
  border-top: 1px solid rgba(142, 212, 240, 0.15);
  font-size: 0.85rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr 1.2fr;
  gap: 3rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 3.5rem;
  margin-bottom: 2rem;
}

.footer-col h5 {
  color: var(--color-white);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  position: relative;
}

.footer-col h5::after {
  content: '';
  position: absolute;
  bottom: -0.5rem;
  left: 0;
  width: 24px;
  height: 2px;
  background-color: var(--color-accent);
}

.footer-logo-area {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-logo-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-logo-img {
  width: 36px;
  height: 36px;
}

.footer-company-name {
  color: var(--color-white);
  font-size: 1.1rem;
  font-weight: 700;
}

.footer-col-desc {
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.55);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.footer-links a:hover {
  color: var(--color-accent);
}

.footer-contact-info {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  color: rgba(255, 255, 255, 0.55);
}

.footer-contact-info span {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-contact-info svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  color: var(--color-accent);
}

/* Regulatory Footer Section */
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  color: rgba(255, 255, 255, 0.45);
}

.footer-bottom-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer-filing {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: var(--transition-fast);
}

.footer-filing:hover {
  color: var(--color-white);
}

.gongan-badge {
  width: 16px;
  height: 16px;
  object-fit: contain;
}

/* -------------------------------------------------------------
   13. Responsive Adaptations (Media Queries)
------------------------------------------------------------- */

/* Responsive: 1024px and down */
@media (max-width: 1024px) {
  html {
    font-size: 15px;
  }
  
  .hero-title {
    font-size: 2.8rem;
  }
  
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .adv-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .dashboard-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .about-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .about-visual {
    order: -1;
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Responsive: 768px and down (Tablets & Large Phones) */
@media (max-width: 768px) {
  :root {
    --header-height: 70px;
    --header-height-scroll: 60px;
  }
  
  .mobile-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: -100%;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background: rgba(244, 249, 253, 0.98);
    backdrop-filter: var(--glass-filter);
    -webkit-backdrop-filter: var(--glass-filter);
    border-top: 1px solid var(--glass-border);
    flex-direction: column;
    padding: 3rem 2rem;
    gap: 2rem;
    align-items: flex-start;
    transition: left var(--transition-normal);
    z-index: 999;
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  /* Animate Toggle Button when active */
  .mobile-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  
  .mobile-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .mobile-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }
  
  .hero-badge {
    justify-content: center;
  }
  
  .hero-title {
    font-size: 2.4rem;
  }
  
  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .tab-pane {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  
  .pane-visual {
    order: -1;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .contact-form-card {
    padding: 2rem;
  }
}

/* Responsive: 480px and down (Small Phones) */
@media (max-width: 480px) {
  html {
    font-size: 14px;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-actions button, .hero-actions a {
    width: 100%;
    text-align: center;
    justify-content: center;
  }
  
  .dashboard-card {
    padding: 1.5rem;
  }
  
  .dashboard-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .dashboard-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .product-grid {
    grid-template-columns: 1fr;
  }
  
  .adv-grid {
    grid-template-columns: 1fr;
  }
  
  .form-grid {
    grid-template-columns: 1fr;
  }
  
  .form-group.full-width {
    grid-column: span 1;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}