/* ====================================
   PES Trading - Shared Styles
   山东优易速进出口贸易有限公司
   ==================================== */

/* ---------- Variables ---------- */
:root {
  --color-primary: #14253D;
  --color-primary-light: #1E3554;
  --color-primary-mid: #2A4870;
  --color-accent: #C49A3C;
  --color-accent-dark: #A8842F;
  --color-accent-light: #D9B766;
  --color-accent-bg: #FAF6EC;
  --color-bg: #F8FAFC;
  --color-bg-alt: #F1F5F9;
  --color-bg-dark: #020617;
  --color-surface: #FFFFFF;
  --color-text: #1E293B;
  --color-text-light: #64748B;
  --color-text-lighter: #94A3B8;
  --color-text-on-dark: #CBD5E1;
  --color-text-on-dark-bright: #F1F5F9;
  --color-border: #E2E8F0;
  --color-border-light: #F1F5F9;
  --color-success: #16A34A;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  --font-heading: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  --max-width: 1200px;
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s;
}

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

ul {
  list-style: none;
}

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

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-primary);
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.section-title {
  font-size: 36px;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--color-text-light);
  max-width: 560px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.25s;
  border: 2px solid transparent;
}

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

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

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

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

.btn-outline-light {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.5);
}

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

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
  transition: background 0.3s;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 18px;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.logo-svg { display: none; }

.logo-img {
  height: 42px;
  width: auto;
  display: block;
}

.logo-img-large {
  height: 90px;
  width: auto;
  display: block;
}

.logo-text-block {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-text-block .name {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--color-primary);
}

.logo-text-block .sub {
  font-size: 10px;
  font-weight: 500;
  color: var(--color-text-lighter);
  letter-spacing: 0.15em;
  margin-top: 2px;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-weight: 800;
  font-size: 16px;
}

.logo-sub {
  font-size: 11px;
  font-weight: 400;
  color: var(--color-text-lighter);
  display: block;
  letter-spacing: 0.05em;
  margin-top: -2px;
}

.nav-list {
  display: flex;
  gap: 36px;
  align-items: center;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-light);
  position: relative;
  padding: 4px 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width 0.25s;
}

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

.nav-lang {
  font-size: 13px;
  color: var(--color-text-lighter);
  cursor: pointer;
  padding: 4px 8px;
  transition: color 0.25s;
}

.nav-lang:hover {
  color: var(--color-accent);
}

.nav-lang.active {
  color: var(--color-accent);
  font-weight: 600;
}

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

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  transition: all 0.3s;
  border-radius: 1px;
}

/* ---------- Hero ---------- */
.hero {
  padding-top: var(--header-height);
  min-height: 85vh;
  display: flex;
  align-items: center;
  background: var(--color-primary);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -15%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200,160,82,0.12) 0%, transparent 70%);
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -10%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200,160,82,0.08) 0%, transparent 70%);
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 80px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
  width: 100%;
}

.hero-content h1 {
  font-size: 48px;
  color: #fff;
  margin-bottom: 20px;
  line-height: 1.15;
}

.hero-content h1 span {
  color: var(--color-accent);
}

.hero-content p {
  font-size: 17px;
  color: var(--color-text-on-dark);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 480px;
}

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

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px;
  padding: 40px;
  backdrop-filter: blur(10px);
  text-align: center;
  max-width: 380px;
}

.hero-card-icon {
  font-size: 48px;
  margin-bottom: 16px;
  color: var(--color-accent);
}

.hero-card h3 {
  color: #fff;
  font-size: 20px;
  margin-bottom: 8px;
}

.hero-card p {
  color: var(--color-text-on-dark);
  font-size: 14px;
  line-height: 1.6;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.hero-stat-number {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-accent);
}

.hero-stat-label {
  font-size: 12px;
  color: var(--color-text-on-dark);
  opacity: 0.7;
}

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

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

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

.section-header .section-subtitle {
  margin: 0 auto;
}

/* ---------- Product Cards (Preview) ---------- */
.products-preview {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.product-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s;
  cursor: pointer;
}

.product-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent-light);
  box-shadow: 0 8px 30px rgba(0,0,0,0.06);
}

.product-card-image {
  height: 240px;
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.product-card-image .placeholder {
  font-size: 64px;
  opacity: 0.3;
  transition: transform 0.3s;
}

.product-card:hover .product-card-image .placeholder {
  transform: scale(1.1);
}

.product-card-body {
  padding: 20px 24px 24px;
}

.product-card-body h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.product-card-body p {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.6;
}

.product-card-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.product-tag {
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 20px;
  background: var(--color-accent-bg);
  color: var(--color-accent-dark);
  font-weight: 500;
}

/* ---------- Features Grid ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-item {
  text-align: center;
  padding: 36px 20px;
  border-radius: 12px;
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  transition: all 0.3s;
}

.feature-item:hover {
  border-color: var(--color-accent-light);
  box-shadow: 0 4px 20px rgba(0,0,0,0.04);
}

.feature-icon {
  font-size: 36px;
  margin-bottom: 16px;
}

.feature-item h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

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

/* ---------- CTA Section ---------- */
.cta-section {
  background: var(--color-primary);
  color: #fff;
  text-align: center;
  padding: 80px 0;
}

.cta-section h2 {
  color: #fff;
  font-size: 32px;
  margin-bottom: 12px;
  line-height: 1.4;
}

.cta-section h2 .bi-cn {
  display: block;
  font-size: 18px;
  font-weight: 400;
  opacity: 0.65;
  margin-top: 4px;
}

.cta-section .section-subtitle {
  color: var(--color-text-on-dark);
  margin: 0 auto 32px;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--color-bg-dark);
  color: var(--color-text-on-dark);
  padding: 60px 0 30px;
}

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

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
}

.footer-brand .logo-svg {
  height: 44px;
}

.footer-brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.footer-brand-text .name {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.footer-brand-text .tagline {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--color-accent);
  margin-top: 4px;
}

.footer-about p {
  font-size: 13px;
  color: var(--color-text-on-dark);
  opacity: 0.7;
  line-height: 1.7;
}

.footer-col h4 {
  color: #fff;
  font-size: 14px;
  margin-bottom: 16px;
  font-weight: 600;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  font-size: 13px;
  color: var(--color-text-on-dark);
  opacity: 0.7;
  transition: all 0.25s;
}

.footer-col ul li a:hover {
  opacity: 1;
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--color-text-on-dark);
  opacity: 0.5;
}

/* ---------- Page Header (inner pages) ---------- */
.page-header {
  padding-top: calc(var(--header-height) + 60px);
  padding-bottom: 60px;
  background: var(--color-primary);
  color: #fff;
  text-align: center;
}

.page-header h1 {
  color: #fff;
  font-size: 40px;
  margin-bottom: 12px;
}

.page-header p {
  color: var(--color-text-on-dark);
  opacity: 0.8;
  font-size: 16px;
  max-width: 600px;
  margin: 0 auto;
}

/* ---------- Products Page ---------- */
.products-categories {
  padding: 80px 0 0;
}

.category-section {
  margin-bottom: 80px;
}

.category-section:last-child {
  margin-bottom: 0;
}

.category-header {
  margin-bottom: 32px;
}

.category-header h2 {
  font-size: 28px;
  margin-bottom: 8px;
}

.category-header p {
  color: var(--color-text-light);
  font-size: 15px;
}

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

.product-detail-card {
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s;
  background: var(--color-surface);
  cursor: pointer;
}

.product-detail-card:hover {
  border-color: var(--color-accent-light);
  box-shadow: 0 8px 30px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}

.product-detail-image {
  height: 220px;
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 56px;
  overflow: hidden;
  padding: 12px;
}

.product-detail-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 1;
  transition: transform 0.3s;
}

.product-detail-card:hover .product-detail-image img {
  transform: scale(1.05);
}

.prod-img-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  color: var(--color-primary);
  opacity: 0.3;
  letter-spacing: 0.05em;
  text-align: center;
  line-height: 1.2;
}

.prod-img-placeholder small {
  font-size: 13px;
  font-weight: 400;
  color: var(--color-text-light);
}

.product-grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.product-detail-info {
  padding: 20px 24px;
}

.product-detail-info h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.product-detail-info .specs {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.8;
}

.product-detail-info .specs span {
  display: inline-block;
  background: var(--color-bg-alt);
  padding: 2px 10px;
  border-radius: 4px;
  margin: 2px 4px 2px 0;
  font-size: 12px;
}

/* ---------- About Page ---------- */
.about-section {
  padding: 80px 0;
}

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

.about-image {
  background: var(--color-bg-alt);
  border-radius: 16px;
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 80px;
  opacity: 0.3;
}

.about-content h2 {
  font-size: 32px;
  margin-bottom: 16px;
}

.about-content p {
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 16px;
  font-size: 15px;
}

.about-highlights {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.about-highlight {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.about-highlight-icon {
  font-size: 24px;
  flex-shrink: 0;
}

.about-highlight-text h4 {
  font-size: 15px;
  margin-bottom: 4px;
}

.about-highlight-text p {
  font-size: 13px;
  margin-bottom: 0;
}

/* ---------- Contact Page ---------- */
.contact-section {
  padding: 80px 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
}

.contact-info h2 {
  font-size: 32px;
  margin-bottom: 16px;
}

.contact-info > p {
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 32px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.contact-detail-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--color-accent-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.contact-detail-text h4 {
  font-size: 15px;
  margin-bottom: 4px;
}

.contact-detail-text p {
  font-size: 14px;
  color: var(--color-text-light);
}

.contact-form-wrapper {
  background: var(--color-bg-alt);
  border-radius: 16px;
  padding: 40px;
  border: 1px solid var(--color-border);
}

.contact-form-wrapper h3 {
  font-size: 22px;
  margin-bottom: 24px;
}

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

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 15px;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color 0.25s;
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

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

.form-success {
  display: none;
  text-align: center;
  padding: 40px 20px;
}

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

.form-success-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.form-success h3 {
  font-size: 20px;
  margin-bottom: 8px;
  color: var(--color-success);
}

.form-success p {
  color: var(--color-text-light);
  font-size: 14px;
}

/* ---------- Bilingual Elements ---------- */
.bi-block {
  margin-bottom: 8px;
}

.bi-en {
  display: block;
  font-size: inherit;
}

.bi-cn {
  display: block;
  font-size: 0.55em;
  color: var(--color-text-light);
  font-weight: 400;
  opacity: 0.7;
  margin-top: 2px;
}

.section .bi-cn {
  opacity: 0.6;
}

/* ---------- Process Section ---------- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}

.process-item {
  text-align: center;
  padding: 40px 24px 32px;
  position: relative;
}

.process-item::after {
  content: '';
  position: absolute;
  top: 60px;
  right: -12px;
  width: 24px;
  height: 2px;
  background: var(--color-border);
}

.process-item:last-child::after {
  display: none;
}

.process-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-accent);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
  border: 2px solid var(--color-accent);
}

.process-item h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.process-item h3 .bi-cn {
  font-size: 13px;
}

.process-item p {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ---------- Bilingual Hero ---------- */
.hero-bilingual {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.hero-bilingual .cn-line {
  font-size: 0.38em;
  opacity: 0.65;
  font-weight: 400;
  display: block;
}

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

.about-intro-image {
  background: var(--color-primary);
  border-radius: 16px;
  height: 100%;
  min-height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.about-intro-image::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -20%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212,175,55,0.15) 0%, transparent 70%);
}

.about-intro-image-text {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.about-intro-image-text .brand {
  font-size: 48px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.02em;
}

.about-intro-image-text .brand span {
  color: var(--color-accent);
}

.about-intro-image-text .slogan {
  font-size: 14px;
  color: var(--color-text-on-dark);
  opacity: 0.6;
}

.about-intro-content h2 {
  font-size: 30px;
  margin-bottom: 8px;
}

.about-intro-content h2 .bi-cn {
  font-size: 18px;
}

.about-intro-content > p {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.9;
  margin-bottom: 20px;
}

.about-intro-metrics {
  display: flex;
  gap: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}

.about-intro-metric {
  text-align: center;
}

.about-intro-metric .num {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-accent);
}

.about-intro-metric .label {
  font-size: 12px;
  color: var(--color-text-light);
  margin-top: 4px;
}

/* ---------- Quick Nav ---------- */
.quick-nav {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.quick-nav a {
  display: inline-block;
  padding: 8px 20px;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-light);
  transition: all 0.25s;
  background: var(--color-surface);
}

.quick-nav a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-dark);
  background: var(--color-accent-bg);
}

/* ---------- Product Modal ---------- */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15,23,42,0.7);
  z-index: 200;
  backdrop-filter: blur(4px);
}

.modal-overlay.show {
  display: block;
}

.modal {
  display: none;
  position: fixed;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  z-index: 201;
  background: var(--color-surface);
  border-radius: 16px;
  max-width: 680px;
  width: calc(100% - 40px);
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}

.modal.show {
  display: block;
}

.modal-close {
  position: sticky;
  top: 0;
  float: right;
  background: none;
  border: none;
  font-size: 28px;
  cursor: pointer;
  padding: 16px 20px;
  color: var(--color-text-light);
  z-index: 202;
  line-height: 1;
}

.modal-close:hover {
  color: var(--color-text);
}

.modal-content {
  padding: 8px 32px 32px;
}

.modal-content h2 {
  font-size: 22px;
  margin-bottom: 20px;
  padding-right: 40px;
}

.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}

.detail-item {
  padding: 12px 16px;
  background: var(--color-bg-alt);
  border-radius: 8px;
}

.detail-item strong {
  display: block;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-lighter);
  margin-bottom: 4px;
  font-weight: 600;
}

.detail-item span {
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.6;
  word-break: break-word;
}

.detail-features {
  padding: 20px;
  background: var(--color-accent-bg);
  border-radius: 10px;
  margin-bottom: 16px;
}

.detail-features strong {
  display: block;
  font-size: 13px;
  color: var(--color-accent-dark);
  margin-bottom: 10px;
}

.detail-features ul {
  list-style: disc;
  padding-left: 20px;
}

.detail-features ul li {
  font-size: 14px;
  color: var(--color-text);
  margin-bottom: 6px;
  line-height: 1.7;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

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

  .hero-content p {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-visual {
    display: none;
  }

  .products-preview,
  .products-grid,
  .product-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-image {
    height: 300px;
  }

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

@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  .section-title {
    font-size: 28px;
  }

  .mobile-toggle {
    display: flex;
  }

  .nav-list {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    background: var(--color-bg);
    padding: 24px;
    gap: 0;
    transform: translateX(100%);
    transition: transform 0.3s;
    overflow-y: auto;
  }

  .nav-list.open {
    transform: translateX(0);
  }

  .nav-list li {
    width: 100%;
  }

  .nav-link {
    display: block;
    padding: 16px 0;
    font-size: 16px;
    border-bottom: 1px solid var(--color-border-light);
  }

  .hero {
    min-height: auto;
  }

  .hero-content h1 {
    font-size: 30px;
  }

  .products-preview,
  .products-grid,
  .product-grid-4 {
    grid-template-columns: 1fr;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

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

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

  .page-header h1 {
    font-size: 30px;
  }

  .hero-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }

  .hero-stat-number {
    font-size: 22px;
  }

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

  .about-intro-image {
    min-height: 200px;
  }

  .about-intro-metrics {
    gap: 24px;
  }

  .process-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .process-item::after {
    display: none;
  }

  .process-item {
    padding: 24px 16px;
  }
}

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

  .about-intro-metrics {
    flex-direction: column;
    gap: 16px;
  }

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

  .modal-content {
    padding: 8px 20px 24px;
  }

  .detail-item span {
    font-size: 13px;
  }
}