/* ============================================
   杭州二阶矩科技有限公司 - 企业官网样式
   ============================================ */

/* ---- CSS Variables ---- */
:root {
  --color-primary: #0F172A;
  --color-primary-light: #1E293B;
  --color-blue: #2563EB;
  --color-blue-light: #3B82F6;
  --color-cyan: #06B6D4;
  --color-cyan-light: #22D3EE;
  --color-amber: #F59E0B;
  --color-amber-light: #FBBF24;
  --color-bg: #F8FAFC;
  --color-white: #FFFFFF;
  --color-text: #1E293B;
  --color-text-muted: #64748B;
  --color-border: #E2E8F0;
  --color-border-light: #F1F5F9;

  --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Cascadia Code", monospace;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.08);
  --shadow-xl: 0 24px 48px rgba(0, 0, 0, 0.12);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --max-width: 1200px;
  --nav-height: 72px;

  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

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

ul {
  list-style: none;
}

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

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

/* ---- Section ---- */
.section {
  padding: 100px 0;
}

.section-sm {
  padding: 60px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 60px;
}

.section-title .eyebrow {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-blue);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title h2 {
  font-size: 40px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.3;
  margin-bottom: 20px;
}

.section-title p {
  font-size: 18px;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* ---- Navbar ---- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  z-index: 1000;
  transition: var(--transition);
}

.navbar.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

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

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-blue), var(--color-cyan));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
}

.logo-text {
  letter-spacing: -0.5px;
}

.logo-text small {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 1px;
  margin-top: -2px;
}

/* Nav Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: var(--transition);
  position: relative;
  padding: 4px 0;
}

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

.nav-links a.active::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-blue), var(--color-cyan));
  border-radius: 2px;
}

.nav-cta {
  padding: 10px 24px !important;
  background: var(--color-primary);
  color: white !important;
  border-radius: var(--radius-sm);
  font-size: 14px;
  transition: var(--transition);
}

.nav-cta:hover {
  background: var(--color-blue);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.nav-cta.active::after {
  display: none;
}

/* Mobile Menu Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}

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

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

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

.btn-primary:hover {
  background: var(--color-blue);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-border);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: white;
  transform: translateY(-2px);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.btn-amber {
  background: var(--color-amber);
  color: white;
}

.btn-amber:hover {
  background: var(--color-amber-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-lg {
  padding: 16px 40px;
  font-size: 16px;
}

/* ---- Hero ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  background: var(--color-primary);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
}

.hero-bg::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.25), transparent 70%);
  border-radius: 50%;
}

.hero-bg::after {
  content: "";
  position: absolute;
  bottom: -20%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.2), transparent 70%);
  border-radius: 50%;
}

/* Grid pattern overlay */
.hero-grid {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  z-index: 0;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  color: white;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 100px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 28px;
  backdrop-filter: blur(10px);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--color-cyan-light);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-content h1 {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.hero-content h1 .gradient-text {
  background: linear-gradient(135deg, var(--color-cyan-light), var(--color-blue-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content p {
  font-size: 19px;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 520px;
}

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

.hero-buttons .btn-secondary {
  color: white;
  border-color: rgba(255, 255, 255, 0.2);
}

.hero-buttons .btn-secondary:hover {
  border-color: white;
  background: rgba(255, 255, 255, 0.05);
}

/* Hero Visual */
.hero-visual {
  position: relative;
  height: 480px;
}

.hero-card {
  position: absolute;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: var(--transition);
}

.hero-card:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-4px);
}

.hero-card-1 {
  top: 0;
  left: 0;
  width: 280px;
  animation: float1 6s ease-in-out infinite;
}

.hero-card-2 {
  top: 180px;
  right: 0;
  width: 260px;
  animation: float2 7s ease-in-out infinite;
}

.hero-card-3 {
  bottom: 0;
  left: 40px;
  width: 300px;
  animation: float3 8s ease-in-out infinite;
}

@keyframes float1 {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@keyframes float2 {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-16px); }
}

@keyframes float3 {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.hero-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  font-size: 22px;
}

.hero-card h4 {
  color: white;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.hero-card p {
  color: rgba(255, 255, 255, 0.55);
  font-size: 13px;
  line-height: 1.6;
}

.hero-card .metric {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-top: 12px;
}

.hero-card .metric .num {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-cyan-light);
  font-family: var(--font-mono);
}

.hero-card .metric .unit {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

/* ---- Stats Bar ---- */
.stats-bar {
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 56px 0;
}

.stat-item {
  text-align: center;
  position: relative;
}

.stat-item:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 48px;
  background: var(--color-border);
}

.stat-num {
  font-size: 44px;
  font-weight: 800;
  color: var(--color-primary);
  font-family: var(--font-mono);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-num .suffix {
  font-size: 24px;
  color: var(--color-blue);
}

.stat-label {
  font-size: 14px;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ---- Services Cards ---- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.service-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-blue), var(--color-cyan));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.service-card:hover {
  border-color: transparent;
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  margin-bottom: 24px;
}

.service-icon.blue {
  background: linear-gradient(135deg, #DBEAFE, #BFDBFE);
}

.service-icon.cyan {
  background: linear-gradient(135deg, #CFFAFE, #A5F3FC);
}

.service-card h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.service-card .tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.service-card .tag {
  padding: 4px 12px;
  background: var(--color-border-light);
  color: var(--color-text-muted);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 500;
}

.service-card p {
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 20px;
}

.service-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.service-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text);
}

.service-features li::before {
  content: "";
  width: 18px;
  height: 18px;
  background: var(--color-blue);
  border-radius: 50%;
  flex-shrink: 0;
  position: relative;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 12px;
}

/* ---- Feature Grid ---- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: var(--transition);
}

.feature-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--color-blue-light);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #EFF6FF, #DBEAFE);
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* ---- Process Section ---- */
.process-section {
  background: var(--color-primary);
  color: white;
  position: relative;
  overflow: hidden;
}

.process-section::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.15), transparent 70%);
  border-radius: 50%;
}

.process-section .section-title h2 {
  color: white;
}

.process-section .section-title p {
  color: rgba(255, 255, 255, 0.6);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
  z-index: 1;
}

.process-step {
  text-align: center;
  position: relative;
}

.process-step-num {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 800;
  color: var(--color-cyan-light);
  font-family: var(--font-mono);
  backdrop-filter: blur(10px);
  transition: var(--transition);
}

.process-step:hover .process-step-num {
  background: rgba(37, 99, 235, 0.2);
  border-color: var(--color-blue);
  transform: scale(1.05);
}

.process-step h4 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  color: white;
}

.process-step p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.7;
}

/* ---- CTA Section ---- */
.cta-section {
  padding: 80px 0;
}

.cta-box {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-xl);
  padding: 64px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.3), transparent 70%);
  border-radius: 50%;
}

.cta-box::after {
  content: "";
  position: absolute;
  bottom: -50%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.2), transparent 70%);
  border-radius: 50%;
}

.cta-box h2 {
  position: relative;
  z-index: 1;
  font-size: 36px;
  font-weight: 700;
  color: white;
  margin-bottom: 16px;
}

.cta-box p {
  position: relative;
  z-index: 1;
  font-size: 18px;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 36px;
}

.cta-box .btn {
  position: relative;
  z-index: 1;
}

/* ---- Page Header (sub-pages) ---- */
.page-header {
  padding: calc(var(--nav-height) + 80px) 0 80px;
  background: var(--color-primary);
  color: white;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.2), transparent 70%);
  border-radius: 50%;
}

.page-header::after {
  content: "";
  position: absolute;
  bottom: -30%;
  left: -5%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.15), transparent 70%);
  border-radius: 50%;
}

.page-header .container {
  position: relative;
  z-index: 1;
  text-align: center;
}

.page-header .eyebrow {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-cyan-light);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.page-header h1 {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.page-header p {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.6);
  max-width: 560px;
  margin: 0 auto;
}

/* ---- About Page ---- */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-intro-text h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 24px;
  line-height: 1.3;
}

.about-intro-text p {
  color: var(--color-text-muted);
  line-height: 1.9;
  margin-bottom: 16px;
}

.about-intro-visual {
  position: relative;
}

.about-intro-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-lg);
}

.about-intro-card .big-num {
  font-size: 64px;
  font-weight: 800;
  font-family: var(--font-mono);
  background: linear-gradient(135deg, var(--color-blue), var(--color-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 8px;
}

.about-intro-card .big-num-label {
  font-size: 15px;
  color: var(--color-text-muted);
  margin-bottom: 32px;
}

.about-intro-card .info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
  border-top: 1px solid var(--color-border-light);
}

.about-intro-card .info-row .label {
  font-size: 14px;
  color: var(--color-text-muted);
}

.about-intro-card .info-row .value {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
}

/* Timeline */
.timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-blue), var(--color-cyan));
}

.timeline-item {
  position: relative;
  padding-left: 72px;
  margin-bottom: 40px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: 15px;
  top: 4px;
  width: 20px;
  height: 20px;
  background: white;
  border: 4px solid var(--color-blue);
  border-radius: 50%;
  z-index: 1;
}

.timeline-year {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-blue);
  font-family: var(--font-mono);
  margin-bottom: 8px;
}

.timeline-item h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.timeline-item p {
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* Values */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.value-card {
  text-align: center;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  transition: var(--transition);
}

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

.value-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  background: linear-gradient(135deg, #EFF6FF, #DBEAFE);
}

.value-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.value-card p {
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* ---- Products Page ---- */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 100px;
}

.product-detail:last-child {
  margin-bottom: 0;
}

.product-detail.reverse .product-detail-text {
  order: 2;
}

.product-detail-text h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.product-detail-text .subtitle {
  font-size: 16px;
  color: var(--color-blue);
  font-weight: 600;
  margin-bottom: 20px;
}

.product-detail-text p {
  color: var(--color-text-muted);
  line-height: 1.9;
  margin-bottom: 24px;
}

.product-detail-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 32px;
}

.product-detail-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.7;
}

.product-detail-list li .check {
  width: 22px;
  height: 22px;
  background: linear-gradient(135deg, var(--color-blue), var(--color-cyan));
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 12px;
}

/* Product Visual */
.product-visual {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-lg);
}

.product-visual-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 24px;
}

.product-visual-items {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.product-visual-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  transition: var(--transition);
}

.product-visual-item:hover {
  border-color: var(--color-blue-light);
  background: white;
  box-shadow: var(--shadow-md);
}

.product-visual-item .pv-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
  background: linear-gradient(135deg, #EFF6FF, #DBEAFE);
}

.product-visual-item .pv-content h5 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.product-visual-item .pv-content p {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* Tech Stack */
.tech-section {
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.tech-item {
  text-align: center;
  padding: 28px 16px;
  border-radius: var(--radius-md);
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  transition: var(--transition);
}

.tech-item:hover {
  border-color: var(--color-blue-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.tech-item .tech-icon {
  font-size: 32px;
  margin-bottom: 12px;
}

.tech-item h5 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.tech-item p {
  font-size: 12px;
  color: var(--color-text-muted);
}

/* ---- Contact Page ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 40px;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-info-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
  background: linear-gradient(135deg, #EFF6FF, #DBEAFE);
}

.contact-info-item h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.contact-info-item p {
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Contact Form */
.contact-form-wrap {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.contact-form-wrap h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.contact-form-wrap .form-subtitle {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 28px;
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

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

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 15px;
  font-family: inherit;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-blue);
  background: white;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.form-submit {
  width: 100%;
  padding: 14px;
  font-size: 16px;
  font-weight: 600;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.form-submit:hover {
  background: var(--color-blue);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.form-success {
  display: none;
  padding: 16px;
  background: #ECFDF5;
  border: 1px solid #A7F3D0;
  border-radius: var(--radius-sm);
  color: #065F46;
  font-size: 14px;
  margin-bottom: 20px;
  align-items: center;
  gap: 8px;
}

.form-success.show {
  display: flex;
}

/* ---- Footer ---- */
.footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.6);
  padding: 72px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

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

.footer-brand .logo-text small {
  color: rgba(255, 255, 255, 0.4);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 20px;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: white;
  margin-bottom: 20px;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  transition: var(--transition);
}

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

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.4);
  transition: var(--transition);
}

.footer-bottom a:hover {
  color: rgba(255, 255, 255, 0.7);
}

/* ---- Differentiation Section ---- */
.diff-section {
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.diff-table-wrap {
  max-width: 920px;
  margin: 0 auto;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.diff-table {
  width: 100%;
  border-collapse: collapse;
}

.diff-table th,
.diff-table td {
  padding: 16px 12px;
  text-align: center;
  border-bottom: 1px solid var(--color-border-light);
}

.diff-table th {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-muted);
  background: var(--color-white);
}

.diff-table th.highlight {
  background: #EFF6FF;
  color: var(--color-blue);
  font-size: 14px;
}

.diff-table th.label-col {
  text-align: left;
  padding-left: 28px;
  color: var(--color-primary);
}

.diff-table td:first-child {
  text-align: left;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  padding-left: 28px;
}

.diff-table td.highlight {
  background: #EFF6FF;
}

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

.diff-table .row-highlight td {
  background: #F0FDF4;
}

.diff-table .row-highlight td:first-child {
  font-weight: 700;
  color: var(--color-primary);
}

.diff-table .row-highlight td.highlight {
  background: #DBEAFE;
}

.diff-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  font-size: 14px;
  font-weight: 700;
}

.diff-icon.yes {
  background: #DCFCE7;
  color: #16A34A;
}

.diff-icon.no {
  background: #FEE2E2;
  color: #DC2626;
}

.diff-icon.partial {
  background: #FEF3C7;
  color: #D97706;
}

.diff-note {
  text-align: center;
  margin-top: 24px;
  font-size: 14px;
  color: #16A34A;
  font-weight: 600;
}

/* ---- Fusion Banner ---- */
.fusion-banner {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-lg);
  padding: 44px 48px;
  margin-bottom: 64px;
  position: relative;
  overflow: hidden;
}

.fusion-banner::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -5%;
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.25), transparent 70%);
  border-radius: 50%;
}

.fusion-banner::after {
  content: "";
  position: absolute;
  bottom: -50%;
  left: -5%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.2), transparent 70%);
  border-radius: 50%;
}

.fusion-banner h3 {
  position: relative;
  z-index: 1;
  color: white;
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 12px;
}

.fusion-banner p {
  position: relative;
  z-index: 1;
  color: rgba(255, 255, 255, 0.65);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 24px;
  max-width: 600px;
}

.fusion-chain {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.fusion-chain-item {
  padding: 10px 18px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 100px;
  color: white;
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  backdrop-filter: blur(10px);
}

.fusion-chain-item.accent {
  background: rgba(37, 99, 235, 0.3);
  border-color: rgba(59, 130, 246, 0.4);
}

.fusion-chain-arrow {
  color: rgba(255, 255, 255, 0.35);
  font-size: 16px;
}

/* ---- Scroll Animations ---- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.fade-up-delay-1 { transition-delay: 0.1s; }
.fade-up-delay-2 { transition-delay: 0.2s; }
.fade-up-delay-3 { transition-delay: 0.3s; }

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    display: none;
  }

  .hero-content h1 {
    font-size: 44px;
  }

  .about-intro {
    grid-template-columns: 1fr;
  }

  .product-detail {
    grid-template-columns: 1fr;
  }

  .product-detail.reverse .product-detail-text {
    order: 0;
  }

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

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

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

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: white;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-toggle {
    display: flex;
  }

  .section {
    padding: 64px 0;
  }

  .section-title h2,
  .page-header h1,
  .hero-content h1 {
    font-size: 32px;
  }

  .hero-content h1 {
    font-size: 36px;
  }

  .hero-content p {
    font-size: 16px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .stat-item:nth-child(2)::after {
    display: none;
  }

  .services-grid,
  .features-grid,
  .values-grid,
  .process-grid,
  .tech-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .cta-box {
    padding: 40px 24px;
  }

  .cta-box h2 {
    font-size: 26px;
  }

  .service-card,
  .feature-card,
  .contact-form-wrap {
    padding: 28px;
  }

  .diff-table th,
  .diff-table td {
    padding: 10px 6px;
    font-size: 12px;
  }

  .diff-table td:first-child {
    padding-left: 14px;
    font-size: 12px;
  }

  .diff-table th {
    font-size: 11px;
  }

  .diff-icon {
    width: 20px;
    height: 20px;
    font-size: 12px;
  }

  .fusion-banner {
    padding: 32px 24px;
  }

  .fusion-banner h3 {
    font-size: 20px;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

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

  .stat-item::after {
    display: none !important;
  }
}