/* ============================================
   灵机科技 iai.world - Design System
   ============================================ */

:root {
  /* Brand Colors (from official Logo) */
  --primary: #28b6e4;          /* Logo text blue - main accent */
  --primary-dark: #0078ba;     /* Logo icon deep blue */
  --primary-light: #1caee0;    /* Logo icon light blue */
  --primary-accent: #00a3d4;   /* Mid-tone between text & icon blue */
  --accent: #475e70;
  --highlight: #28b6e4;

  /* Backgrounds */
  --bg-darkest: #0a1922;       /* Dark tinted with blue */
  --bg-dark: #0e2230;          /* Dark blue-grey */
  --bg-section: #143042;       /* Mid blue-grey */
  --bg-light: #f0f7fb;         /* Very light blue tint */
  --bg-white: #ffffff;

  /* Text */
  --text-light: #ffffff;
  --text-light-secondary: #8fb4c8;
  --text-light-muted: #5e88a3;
  --text-dark: #0a1922;
  --text-dark-body: #4a6275;
  --text-dark-secondary: #3d6580;

  /* Borders & Dividers */
  --border-dark: #1e4458;
  --border-light: #d6e6f0;

  /* Effects */
  --shadow-card: 0 8px 32px rgba(0, 120, 186, 0.10);
  --shadow-card-hover: 0 16px 48px rgba(0, 120, 186, 0.18);
  --shadow-glow: 0 0 60px rgba(40, 182, 228, 0.18);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;

  /* Fonts */
  --font-cn: "Microsoft YaHei", "微软雅黑", "PingFang SC", "Helvetica Neue", sans-serif;
  --font-en: "Impact", "Arial Black", sans-serif;
  --font-body: "Microsoft YaHei", "微软雅黑", "PingFang SC", "Helvetica Neue", sans-serif;
}

/* ============================================
   Reset & Base
   ============================================ */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-dark-body);
  background: var(--bg-dark);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
  list-style: none;
}

/* ============================================
   Layout Utilities
   ============================================ */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
  position: relative;
}

.section-dark {
  background: var(--bg-dark);
  color: var(--text-light);
}

.section-darker {
  background: var(--bg-darkest);
  color: var(--text-light);
}

.section-mid {
  background: var(--bg-section);
  color: var(--text-light);
}

.section-light {
  background: var(--bg-light);
  color: var(--text-dark-body);
}

.section-label {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 12px;
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
  text-wrap: balance;
}

.section-dark .section-title,
.section-darker .section-title,
.section-mid .section-title {
  color: var(--text-light);
}

.section-light .section-title {
  color: var(--text-dark);
}

.section-subtitle {
  font-size: 17px;
  line-height: 1.8;
  max-width: 720px;
  margin-bottom: 48px;
  color: var(--text-light-secondary);
}

.section-light .section-subtitle {
  color: var(--text-dark-secondary);
}

.section-header {
  margin-bottom: 56px;
}

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

.text-center .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}

/* ============================================
   Navbar
   ============================================ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: background var(--transition), backdrop-filter var(--transition), border-color var(--transition);
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  background: rgba(26, 26, 26, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: rgba(65, 68, 84, 0.5);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-logo-icon {
  height: 36px;
  width: auto;
  flex-shrink: 0;
}

.nav-logo-text-img {
  height: 22px;
  width: auto;
}

.nav-logo-icon-lg {
  height: 48px;
  width: auto;
}

.nav-logo-text-img-lg {
  height: 30px;
  width: auto;
}

.nav-logo-mark {
  display: none;
}

.nav-logo-text {
  display: none;
}

.nav-logo-cn {
  display: none;
}

.nav-logo-en {
  display: none;
}

/* Section images - unified figure system */
.section-img {
  max-width: 760px;
  margin: 40px auto 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  position: relative;
}

.section-img img {
  width: 100%;
  height: auto;
  display: block;
}

/* Dark sections: add subtle light outline */
.section-dark .section-img img,
.section-darker .section-img img,
.section-mid .section-img img {
  outline: 1px solid rgba(255, 255, 255, 0.08);
  outline-offset: -1px;
}

/* Light sections: add subtle dark outline */
.section-light .section-img img {
  outline: 1px solid rgba(0, 0, 0, 0.08);
  outline-offset: -1px;
}

.hero-bg-img {
  position: absolute;
  right: 0;
  top: 0;
  width: 55%;
  height: 100%;
  object-fit: cover;
  opacity: 0.35;
  mask-image: linear-gradient(to left, #000 50%, transparent 100%);
  -webkit-mask-image: linear-gradient(to left, #000 50%, transparent 100%);
  z-index: 1;
}

/* Product section image - narrower, square-ish */
.section-img-narrow {
  max-width: 560px;
}

/* Team image in about section */
.team-img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  outline: 1px solid rgba(0, 0, 0, 0.08);
  outline-offset: -1px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-menu a {
  font-size: 15px;
  color: var(--text-light-secondary);
  transition: color var(--transition);
  position: relative;
}

.nav-menu a:hover {
  color: var(--text-light);
}

.nav-menu a.active {
  color: var(--primary);
}

.nav-cta-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font-body);
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: transform var(--transition), background var(--transition), box-shadow var(--transition), color var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.96);
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(40, 182, 228, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--text-light);
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(40, 182, 228, 0.08);
}

.btn-outline-dark {
  background: transparent;
  color: var(--text-dark);
  border: 1px solid var(--border-light);
}

.btn-outline-dark:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 13px;
}

/* ============================================
   Hero
   ============================================ */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: var(--bg-darkest);
  padding-top: var(--nav-height);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 70% 50%, rgba(40, 182, 228, 0.18), transparent 60%);
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(40, 182, 228, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(40, 182, 228, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, #000, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, #000, transparent 80%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(40, 182, 228, 0.12);
  border: 1px solid rgba(40, 182, 228, 0.3);
  border-radius: 100px;
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 28px;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px var(--primary);
}

.hero-title {
  font-size: 56px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-light);
  margin-bottom: 20px;
  text-wrap: balance;
}

.hero-title .highlight {
  color: var(--primary);
}

.hero-tagline {
  font-size: 20px;
  color: var(--text-light-secondary);
  margin-bottom: 36px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid var(--border-dark);
}

.hero-stat-value {
  font-family: var(--font-en);
  font-size: 42px;
  color: var(--primary);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.hero-stat-label {
  font-size: 13px;
  color: var(--text-light-secondary);
  margin-top: 6px;
}

.hero-visual {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 50%;
  max-width: 640px;
  z-index: 1;
}

.hero-robot-card {
  position: relative;
  aspect-ratio: 4/5;
  border-radius: 20px;
  overflow: hidden;
  background: linear-gradient(135deg, #2a2a3e, #1a1a2e);
  border: 1px solid var(--border-dark);
  box-shadow: var(--shadow-glow);
}

.hero-robot-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 40%, rgba(40, 182, 228, 0.25), transparent 70%);
}

/* CSS robot illustration */
.robot-illustration {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 20px;
}

.robot-body {
  width: 180px;
  height: 240px;
  position: relative;
}

.robot-head {
  width: 100px;
  height: 70px;
  margin: 0 auto;
  background: linear-gradient(180deg, #5a6a7a, #3a4a5a);
  border-radius: 16px 16px 8px 8px;
  border: 2px solid #6a7a8a;
  position: relative;
}

.robot-eye {
  position: absolute;
  top: 22px;
  width: 18px;
  height: 6px;
  border-radius: 3px;
  background: var(--primary);
  box-shadow: 0 0 12px var(--primary);
}

.robot-eye.left { left: 20px; }
.robot-eye.right { right: 20px; }

.robot-sensor {
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 14px;
  background: #4a5a6a;
  border-radius: 8px 8px 0 0;
  border: 1px solid #6a7a8a;
}

.robot-sensor::after {
  content: "";
  position: absolute;
  top: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 10px var(--primary);
}

.robot-torso {
  width: 140px;
  height: 130px;
  margin: 8px auto 0;
  background: linear-gradient(180deg, #4a5a6a, #2a3a4a);
  border-radius: 12px;
  border: 2px solid #5a6a7a;
  position: relative;
}

.robot-screen {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 50px;
  background: #0a1a2a;
  border-radius: 6px;
  border: 1px solid var(--primary);
  overflow: hidden;
}

.robot-screen::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(40,182,228,0.15), transparent);
}

.robot-screen-bars {
  position: absolute;
  bottom: 6px;
  left: 6px;
  right: 6px;
  display: flex;
  gap: 3px;
  align-items: flex-end;
  height: 20px;
}

.robot-screen-bar {
  flex: 1;
  background: var(--primary);
  opacity: 0.7;
  border-radius: 1px;
}

.robot-arm {
  position: absolute;
  top: 30px;
  width: 14px;
  height: 80px;
  background: linear-gradient(180deg, #5a6a7a, #3a4a5a);
  border-radius: 7px;
}

.robot-arm.left { left: -12px; }
.robot-arm.right { right: -12px; }

.robot-base {
  width: 160px;
  height: 30px;
  margin: 0 auto;
  background: linear-gradient(180deg, #3a4a5a, #1a2a3a);
  border-radius: 0 0 10px 10px;
  border: 2px solid #4a5a6a;
  border-top: none;
  position: relative;
}

.robot-wheel {
  position: absolute;
  bottom: -8px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: #2a2a2a;
  border: 3px solid #4a5a6a;
}

.robot-wheel.left { left: 10px; }
.robot-wheel.right { right: 10px; }

.robot-wheel::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4a5a6a;
}

/* Radar rings */
.hero-radar {
  position: absolute;
  bottom: 30px;
  right: 30px;
  width: 80px;
  height: 80px;
}

.hero-radar-ring {
  position: absolute;
  border: 1px solid rgba(40, 182, 228, 0.3);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: radarPulse 3s ease-out infinite;
}

.hero-radar-ring:nth-child(1) { width: 20px; height: 20px; animation-delay: 0s; }
.hero-radar-ring:nth-child(2) { width: 20px; height: 20px; animation-delay: 1s; }
.hero-radar-ring:nth-child(3) { width: 20px; height: 20px; animation-delay: 2s; }

@keyframes radarPulse {
  0% { width: 20px; height: 20px; opacity: 1; }
  100% { width: 80px; height: 80px; opacity: 0; }
}

.hero-card-label {
  position: absolute;
  bottom: 24px;
  left: 24px;
  z-index: 3;
}

.hero-card-label-en {
  font-family: var(--font-en);
  font-size: 12px;
  color: var(--primary);
  letter-spacing: 2px;
}

.hero-card-label-cn {
  font-size: 14px;
  color: var(--text-light-secondary);
  margin-top: 2px;
}

/* ============================================
   Pain Points Section
   ============================================ */

.pain-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.pain-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: all var(--transition);
}

.pain-card:hover {
  background: rgba(40, 182, 228, 0.08);
  border-color: rgba(40, 182, 228, 0.3);
  transform: translateY(-4px);
}

.pain-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(40, 182, 228, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 24px;
}

.pain-card h3 {
  text-wrap: balance;
  font-size: 17px;
  color: var(--text-light);
  margin-bottom: 10px;
}

.pain-card p {
  font-size: 14px;
  color: var(--text-light-secondary);
  line-height: 1.7;
}

/* ============================================
   Solution Section
   ============================================ */

.solution-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 64px;
}

.solution-intro h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 20px;
  line-height: 1.3;
}

.solution-intro .highlight {
  color: var(--primary);
}

.solution-intro p {
  font-size: 16px;
  color: var(--text-dark-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
}

.solution-tags {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.solution-tag {
  padding: 6px 16px;
  background: rgba(40, 182, 228, 0.08);
  border: 1px solid rgba(40, 182, 228, 0.2);
  border-radius: 100px;
  font-size: 13px;
  color: var(--primary-dark);
  font-weight: 600;
}

.solution-visual {
  background: linear-gradient(135deg, #e8f0fc, #f2f7fc);
  border-radius: 16px;
  padding: 40px;
  border: 1px solid var(--border-light);
  position: relative;
  overflow: hidden;
}

.solution-visual::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -30%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(40, 182, 228, 0.1), transparent 70%);
}

.solution-diagram {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.solution-diagram-row {
  display: flex;
  align-items: center;
  gap: 16px;
}

.solution-node {
  flex: 1;
  padding: 16px 20px;
  background: #fff;
  border-radius: 10px;
  border: 1px solid var(--border-light);
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  text-align: center;
}

.solution-node-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-dark);
}

.solution-node-desc {
  font-size: 12px;
  color: var(--text-dark-secondary);
  margin-top: 4px;
}

.solution-arrow {
  color: var(--primary);
  font-size: 20px;
  flex-shrink: 0;
}

.innovation-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.innovation-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.innovation-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition);
}

.innovation-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.innovation-card:hover::before {
  transform: scaleY(1);
}

.innovation-number {
  font-family: var(--font-en);
  font-size: 36px;
  color: var(--primary);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: 16px;
}

.innovation-card h3 {
  text-wrap: balance;
  font-size: 18px;
  color: var(--text-dark);
  margin-bottom: 12px;
  font-weight: 700;
}

.innovation-card p {
  font-size: 14px;
  color: var(--text-dark-secondary);
  line-height: 1.8;
}

/* ============================================
   Technology Section
   ============================================ */

.tech-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.tech-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.tech-item {
  display: flex;
  gap: 20px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.tech-item:hover {
  background: rgba(40, 182, 228, 0.06);
  border-color: rgba(40, 182, 228, 0.3);
}

.tech-item-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(40, 182, 228, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 20px;
}

.tech-item-body h3 {
  text-wrap: balance;
  font-size: 16px;
  color: var(--text-light);
  margin-bottom: 6px;
  font-weight: 700;
}

.tech-item-body p {
  font-size: 14px;
  color: var(--text-light-secondary);
  line-height: 1.6;
}

.tech-patents {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius);
  padding: 40px;
  position: relative;
  overflow: hidden;
}

.tech-patents::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(40, 182, 228, 0.1), transparent 70%);
}

.patent-header {
  position: relative;
  z-index: 1;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-dark);
}

.patent-count {
  font-family: var(--font-en);
  font-size: 64px;
  color: var(--primary);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.patent-label {
  font-size: 14px;
  color: var(--text-light-secondary);
  margin-top: 8px;
}

.patent-list {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.patent-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-light-secondary);
}

.patent-check {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(40, 182, 228, 0.2);
  border: 1px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 10px;
  color: var(--primary);
}

/* ============================================
   Product Specs Section
   ============================================ */

.specs-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.specs-table {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-card);
}

.specs-table-header {
  background: var(--primary-dark);
  color: #fff;
  padding: 18px 28px;
  font-size: 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}

.specs-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  padding: 16px 28px;
  border-bottom: 1px solid var(--border-light);
  align-items: center;
}

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

.specs-row:nth-child(even) {
  background: #f8fafd;
}

.specs-label {
  font-size: 14px;
  color: var(--text-dark-secondary);
  font-weight: 600;
}

.specs-value {
  font-size: 14px;
  color: var(--text-dark);
  font-weight: 500;
}

.specs-value .unit {
  color: var(--text-dark-secondary);
  font-weight: 400;
  margin-left: 4px;
}

.features-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feature-item {
  display: flex;
  gap: 16px;
  padding: 24px;
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.feature-item:hover {
  box-shadow: var(--shadow-card);
  transform: translateX(4px);
  border-color: var(--primary);
}

.feature-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(40, 182, 228, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 18px;
}

.feature-item h3 {
  text-wrap: balance;
  font-size: 15px;
  color: var(--text-dark);
  margin-bottom: 4px;
  font-weight: 700;
}

.feature-item p {
  font-size: 13px;
  color: var(--text-dark-secondary);
  line-height: 1.6;
}

/* ============================================
   Case Study Section
   ============================================ */

.case-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}

.case-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-dark);
  border-radius: 20px;
  padding: 48px;
  position: relative;
  overflow: hidden;
}

.case-card::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(40, 182, 228, 0.12), transparent 70%);
}

.case-tag {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(40, 182, 228, 0.15);
  border-radius: 100px;
  font-size: 12px;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 20px;
}

.case-title {
  text-wrap: balance;
  font-size: 22px;
  color: var(--text-light);
  margin-bottom: 28px;
  font-weight: 700;
  position: relative;
  z-index: 1;
}

.case-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  position: relative;
  z-index: 1;
}

.case-stat {
  padding: 24px;
  background: rgba(40, 182, 228, 0.06);
  border: 1px solid rgba(40, 182, 228, 0.2);
  border-radius: 12px;
}

.case-stat-value {
  font-family: var(--font-en);
  font-size: 40px;
  color: var(--primary);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.case-stat-value .suffix {
  font-size: 18px;
  color: var(--text-light-secondary);
}

.case-stat-label {
  font-size: 13px;
  color: var(--text-light-secondary);
  margin-top: 8px;
}

.case-desc {
  position: relative;
  z-index: 1;
}

.case-desc h3 {
  font-size: 16px;
  color: var(--text-light);
  margin-bottom: 16px;
}

.case-desc ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.case-desc li {
  display: flex;
  align-items: start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-light-secondary);
}

.case-desc li::before {
  content: "▸";
  color: var(--primary);
  flex-shrink: 0;
}

.case-chart {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.case-chart-title {
  font-size: 14px;
  color: var(--text-light-secondary);
  text-align: center;
  margin-bottom: 8px;
}

.bar-comparison {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.bar-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.bar-group-label {
  font-size: 13px;
  color: var(--text-light-secondary);
  display: flex;
  justify-content: space-between;
}

.bar-track {
  height: 32px;
  background: rgba(255,255,255,0.05);
  border-radius: 6px;
  overflow: hidden;
  position: relative;
}

.bar-fill {
  height: 100%;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 12px;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.bar-fill.fixed {
  background: linear-gradient(90deg, #475e70, #708da3);
}

.bar-fill.robot {
  background: linear-gradient(90deg, var(--primary-dark), var(--primary));
}

/* ============================================
   About Section
   ============================================ */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text h2 {
  text-wrap: balance;
  font-size: 36px;
  color: var(--text-dark);
  margin-bottom: 20px;
  font-weight: 700;
  line-height: 1.3;
}

.about-text p {
  font-size: 16px;
  color: var(--text-dark-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-features {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 28px;
}

.about-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  color: var(--text-dark);
}

.about-feature-check {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 11px;
  color: #fff;
}

.team-card {
  background: #fff;
  border-radius: 16px;
  padding: 40px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-card);
}

.team-card-title {
  font-size: 14px;
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.team-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.team-member {
  display: flex;
  gap: 16px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-light);
}

.team-member:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.team-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: #fff;
  font-weight: 700;
  flex-shrink: 0;
}

.team-info h4 {
  font-size: 15px;
  color: var(--text-dark);
  font-weight: 700;
}

.team-role {
  font-size: 12px;
  color: var(--primary);
  font-weight: 600;
  margin-top: 2px;
}

.team-bg {
  font-size: 13px;
  color: var(--text-dark-secondary);
  margin-top: 4px;
  line-height: 1.5;
}

/* Honors */
.honors {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.honor-badge {
  padding: 8px 18px;
  background: rgba(40, 182, 228, 0.08);
  border: 1px solid rgba(40, 182, 228, 0.2);
  border-radius: 100px;
  font-size: 13px;
  color: var(--primary-dark);
  font-weight: 600;
}

/* ============================================
   CTA Banner
   ============================================ */

.cta-banner {
  background: linear-gradient(135deg, var(--bg-darkest), var(--bg-dark));
  border-top: 1px solid var(--border-dark);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 80% at 50% 100%, rgba(40, 182, 228, 0.15), transparent 70%);
}

.cta-banner .container {
  position: relative;
  z-index: 1;
}

.cta-banner h2 {
  text-wrap: balance;
  font-size: 32px;
  color: var(--text-light);
  margin-bottom: 16px;
  font-weight: 700;
}

.cta-banner p {
  font-size: 16px;
  color: var(--text-light-secondary);
  margin-bottom: 32px;
}

.cta-banner .hero-actions {
  justify-content: center;
}

/* ============================================
   Footer
   ============================================ */

.footer {
  background: #111;
  color: var(--text-light-secondary);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .nav-logo {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 13px;
  line-height: 1.7;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 16px;
  font-weight: 700;
}

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

.footer-col a {
  font-size: 13px;
  color: var(--text-light-secondary);
  transition: color var(--transition);
}

.footer-col a:hover {
  color: var(--primary);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid #222;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
}

.footer-bottom a {
  color: var(--text-light-secondary);
}

/* ============================================
   Animations
   ============================================ */

.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.fade-up:nth-child(2) { transition-delay: 0.1s; }
.fade-up:nth-child(3) { transition-delay: 0.2s; }
.fade-up:nth-child(4) { transition-delay: 0.3s; }

/* ============================================
   Sub Pages (Careers & Contact)
   ============================================ */

.page-hero {
  padding: 160px 0 80px;
  background: var(--bg-darkest);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 60% at 50% 0%, rgba(40, 182, 228, 0.12), transparent 70%);
}

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

.page-hero h1 {
  font-size: 42px;
  color: var(--text-light);
  font-weight: 700;
  margin-bottom: 16px;
}

.page-hero p {
  font-size: 17px;
  color: var(--text-light-secondary);
  max-width: 600px;
}

/* Careers */
.jobs-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.job-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 28px 32px;
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.job-card:hover {
  box-shadow: var(--shadow-card);
  border-color: var(--primary);
}

.job-info h3 {
  font-size: 18px;
  color: var(--text-dark);
  margin-bottom: 6px;
}

.job-meta {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: var(--text-dark-secondary);
}

.job-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.job-tag {
  padding: 4px 12px;
  background: rgba(40, 182, 228, 0.08);
  border-radius: 100px;
  font-size: 12px;
  color: var(--primary);
  font-weight: 600;
}

/* Contact */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-info h2 {
  font-size: 28px;
  color: var(--text-dark);
  margin-bottom: 24px;
}

.contact-item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(40, 182, 228, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 18px;
}

.contact-item h4 {
  font-size: 14px;
  color: var(--text-dark-secondary);
  margin-bottom: 4px;
}

.contact-item p {
  font-size: 16px;
  color: var(--text-dark);
  font-weight: 600;
}

.contact-form {
  background: #fff;
  border-radius: var(--radius);
  padding: 40px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-card);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  color: var(--text-dark);
  font-weight: 600;
  margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: var(--font-body);
  color: var(--text-dark);
  background: #fff;
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(40, 182, 228, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

/* ============================================
   Mobile Menu Toggle
   ============================================ */

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-light);
  border-radius: 2px;
  transition: all var(--transition);
}

.nav-toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 1024px) {
  .hero-visual {
    display: none;
  }
  .hero-content {
    max-width: 100%;
  }
  .pain-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .innovation-grid {
    grid-template-columns: 1fr;
  }
  .tech-grid,
  .specs-layout,
  .case-layout,
  .about-grid,
  .solution-hero,
  .contact-layout {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(26, 26, 26, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    transform: translateY(-150%);
    transition: transform var(--transition);
    border-bottom: 1px solid var(--border-dark);
  }
  .nav-menu.open {
    transform: translateY(0);
  }
  .nav-logo-text-img {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-cta-group .btn:not(.nav-toggle) {
    display: none;
  }
  .section {
    padding: 64px 0;
  }
  .hero-title {
    font-size: 36px;
  }
  .section-title {
    font-size: 28px;
  }
  .pain-grid {
    grid-template-columns: 1fr;
  }
  .case-stats {
    grid-template-columns: 1fr;
  }
  .hero-stats {
    flex-wrap: wrap;
    gap: 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}