/* ===== Design Tokens ===== */
:root {
  --color-primary: #e60012;
  --color-primary-hover: #cc0010;
  --color-primary-light: rgba(230, 0, 18, 0.08);
  --color-bg: #FFFFFF;
  --color-surface: #F8F8F8;
  --color-card: #FCFCFC;
  --color-card-end: #ECECEC;
  --color-text: #333333;
  --color-muted: #666666;
  --color-light: #999999;
  --color-border: #E5E5E5;
  --color-footer: #252525;
  --color-footer-text: #CCCCCC;
  --color-success: #52C41A;
  --color-error: #FF4D4F;
  --font-family: "Alibaba Sans", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --font-display: 56px;
  --font-h1: 48px;
  --font-h2: 32px;
  --font-h3: 20px;
  --font-body: 16px;
  --font-body-lg: 20px;
  --font-caption: 14px;
  --font-button: 16px;
  --max-width: 1680px;
  --section-gap: 120px;
  --content-padding: 60px;
  --card-radius: 20px;
  --btn-radius: 50px;
  --img-radius: 12px;
  --nav-height: 100px;
  --transition: 0.36s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 8px 32px rgba(0, 0, 0, 0.1);
  --shadow-nav: 0 2px 12px rgba(0, 0, 0, 0.06);
}

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

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

body {
  font-family: var(--font-family);
  font-size: var(--font-body);
  line-height: 1.8;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

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

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
}

.display {
  font-size: var(--font-display);
  line-height: 1.2;
  font-weight: 700;
}

h1 { font-size: var(--font-h1); }
h2 { font-size: var(--font-h2); }
h3 { font-size: var(--font-h3); font-weight: 600; }

.text-muted { color: var(--color-muted); }
.text-light { color: var(--color-light); }
.text-center { text-align: center; }

/* ===== Layout ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--content-padding);
}

.section {
  padding: var(--section-gap) 0;
}

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

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header p {
  font-size: var(--font-body-lg);
  color: var(--color-muted);
  max-width: 640px;
  margin: 0 auto;
}

.section-label {
  display: inline-block;
  font-size: var(--font-caption);
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 36px;
  font-size: var(--font-button);
  font-weight: 500;
  border-radius: var(--btn-radius);
  transition: all var(--transition);
  cursor: pointer;
  white-space: nowrap;
  gap: 8px;
}

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

.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(230, 0, 18, 0.3);
}

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

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

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

.btn-white:hover {
  background: #f5f5f5;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.btn-arrow::after {
  content: '→';
  transition: transform var(--transition);
}

.btn-arrow:hover::after {
  transform: translateX(4px);
}

/* ===== Header / Navigation ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: box-shadow var(--transition);
  overflow: visible;
}

.header.scrolled {
  box-shadow: var(--shadow-nav);
}

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

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

.logo img {
  height: 60px;
  width: auto;
}

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

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: 8px;
  transition: all var(--transition);
  white-space: nowrap;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 16px;
  right: 16px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}

.nav-link .arrow {
  margin-left: 4px;
  font-size: 10px;
  transition: transform var(--transition);
}

.nav-item:hover .arrow {
  transform: rotate(180deg);
}

/* Mega Menu */
.mega-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.12);
  padding: 32px;
  min-width: 680px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  pointer-events: none;
  z-index: 1001;
}

.nav-item:hover .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

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

.mega-menu-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.mega-menu-col a {
  display: block;
  padding: 6px 0;
  font-size: 14px;
  color: var(--color-muted);
  transition: color var(--transition);
}

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

.mega-menu > a {
  display: block;
  padding: 8px 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  transition: color var(--transition);
}

.mega-menu > a:hover {
  color: var(--color-primary-hover);
}

.quality-menu .mega-menu {
  min-width: 220px;
  padding: 16px 24px;
}

/* ===== Dropdown Menu ===== */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.12);
  padding: 8px 0;
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  pointer-events: none;
  z-index: 100;
}

.nav-item:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.dropdown-item {
  position: relative;
}

.dropdown-item > a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 24px;
  font-size: 14px;
  color: var(--color-muted);
  transition: all var(--transition);
}

.dropdown-item > a:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.dropdown-item .arrow-right {
  font-size: 10px;
  transition: transform var(--transition);
}

.dropdown-item:hover .arrow-right {
  transform: translateX(3px);
}

/* Submenu - 二级菜单 */
.submenu {
  position: absolute;
  top: 0;
  left: 100%;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.12);
  padding: 8px 0;
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transform: translateX(8px);
  transition: all var(--transition);
  pointer-events: none;
  z-index: 101;
}

.dropdown-item:hover .submenu {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
  pointer-events: auto;
}

.submenu a {
  display: block;
  padding: 10px 24px;
  font-size: 14px;
  color: var(--color-muted);
  transition: all var(--transition);
  white-space: nowrap;
}

.submenu a:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.header-cta {
  flex-shrink: 0;
}

.header-cta .btn {
  padding: 10px 24px;
  font-size: 14px;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

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

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

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

/* ===== Mobile Nav - Global Default Hidden ===== */
.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: #fff;
  z-index: 999;
  padding: 100px 32px 32px;
  transform: translateX(100%);
  transition: transform var(--transition);
  overflow-y: auto;
  display: none;
}

.mobile-nav.open {
  transform: translateX(0);
  display: block;
}

.mobile-nav a {
  display: block;
  padding: 16px 0;
  font-size: 18px;
  font-weight: 500;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav a:hover {
  color: var(--color-primary);
}

.mobile-nav .sub-nav {
  padding-left: 20px;
}

.mobile-nav .sub-nav a {
  font-size: 15px;
  font-weight: 400;
  color: var(--color-muted);
  border-bottom: none;
  padding: 10px 0;
}

/* ===== Page Hero (内页首屏) ===== */
.page-hero {
  position: relative;
  height: 360px;
  display: flex;
  align-items: center;
  overflow: hidden;
  margin-top: var(--nav-height);
}

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

.page-hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.25) 100%);
}

.page-hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.page-hero-content .section-label {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 12px;
}

.page-hero-content h1 {
  color: #fff;
  font-size: var(--font-h1);
  margin-bottom: 12px;
}

.page-hero-content p {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-body-lg);
}

/* ===== Solutions Detail (工业与自动化 - 左右图文) ===== */
.solutions-detail-grid {
  display: flex;
  flex-direction: column;
  gap: 80px;
}

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

.solution-detail-card-reverse {
  direction: rtl;
}

.solution-detail-card-reverse > * {
  direction: ltr;
}

.solution-detail-img {
  border-radius: var(--card-radius);
  overflow: hidden;
  aspect-ratio: 16/10;
}

.solution-detail-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}

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

.solution-detail-body h3 {
  font-size: 24px;
  margin-bottom: 16px;
}

.solution-detail-body p {
  color: var(--color-muted);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 20px;
}

.solution-detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.solution-detail-tag {
  padding: 6px 16px;
  font-size: 13px;
  color: var(--color-primary);
  background: var(--color-primary-light);
  border-radius: 20px;
  font-weight: 500;
}

/* ===== Solutions Energy Grid (泛能源 - 4卡片) ===== */
.solutions-energy-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.solution-energy-card {
  background: linear-gradient(135deg, var(--color-card), var(--color-card-end));
  border-radius: var(--card-radius);
  overflow: hidden;
  transition: all var(--transition);
}

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

.solution-energy-img {
  aspect-ratio: 16/9;
  overflow: hidden;
}

.solution-energy-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}

.solution-energy-card:hover .solution-energy-img img {
  transform: scale(1.05);
}

.solution-energy-body {
  padding: 28px;
}

.solution-energy-body h3 {
  font-size: 20px;
  margin-bottom: 12px;
}

.solution-energy-body p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.solution-energy-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition);
}

.solution-energy-card:hover .solution-energy-link {
  gap: 10px;
}

/* ===== News List (内页新闻列表) ===== */
.news-list-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}

.news-list-card {
  background: linear-gradient(135deg, var(--color-card), var(--color-card-end));
  border-radius: var(--card-radius);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

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

.news-list-card-img {
  aspect-ratio: 16/9;
  overflow: hidden;
  flex-shrink: 0;
}

.news-list-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}

.news-list-card:hover .news-list-card-img img {
  transform: scale(1.05);
}

.news-list-card-body {
  padding: 28px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.news-list-card-date {
  font-size: 13px;
  color: var(--color-light);
  margin-bottom: 10px;
}

.news-list-card-body h3 {
  font-size: 18px;
  margin-bottom: 12px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-list-card-body p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
  flex: 1;
}

.news-list-card-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition);
}

.news-list-card:hover .news-list-card-link {
  gap: 10px;
}

/* ===== About Intro (公司简介 - 左右图文) ===== */
.about-intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-intro-grid-reverse {
  direction: rtl;
}

.about-intro-grid-reverse > * {
  direction: ltr;
}

.about-intro-text .section-label {
  margin-bottom: 12px;
}

.about-intro-text h2 {
  margin-bottom: 24px;
}

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

.about-highlight {
  font-style: italic;
  color: var(--color-text) !important;
  border-left: 3px solid var(--color-primary);
  padding-left: 20px;
  margin: 24px 0 !important;
}

.about-subtitle {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
  margin-top: -8px;
}

.about-intro-img {
  border-radius: var(--card-radius);
  overflow: hidden;
  aspect-ratio: 16/11;
}

.about-intro-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}

.about-intro-grid:hover .about-intro-img img {
  transform: scale(1.05);
}

/* ===== About Vision (愿景宣言) ===== */
@keyframes orbFloat1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -20px) scale(1.05); }
}
@keyframes orbFloat2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-25px, 30px) scale(0.95); }
}
@keyframes orbFloat3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(20px, 20px) scale(1.08); }
}

.about-vision {
  background:
    linear-gradient(135deg, rgba(10,14,26,0.45) 0%, rgba(26,16,37,0.35) 50%, rgba(13,21,32,0.45) 100%),
    url('../media/banner.jpg') center/cover no-repeat;
  border-radius: 0;
  padding: 120px 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.vision-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  pointer-events: none;
}

.vision-orb-1 {
  width: 380px;
  height: 380px;
  background: rgba(230, 0, 18, 0.15);
  top: -10%;
  left: -5%;
  animation: orbFloat1 8s ease-in-out infinite;
}

.vision-orb-2 {
  width: 300px;
  height: 300px;
  background: rgba(59, 130, 246, 0.12);
  bottom: -10%;
  right: -5%;
  animation: orbFloat2 10s ease-in-out infinite;
}

.vision-orb-3 {
  width: 220px;
  height: 220px;
  background: rgba(230, 0, 18, 0.08);
  top: 50%;
  left: 55%;
  animation: orbFloat3 12s ease-in-out infinite;
}

.about-vision-content {
  position: relative;
  z-index: 1;
  max-width: 680px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 24px;
  padding: 64px 48px;
}

.about-vision-content .section-label {
  margin-bottom: 16px;
  color: var(--color-primary);
}

.about-vision-content h2 {
  color: #ffffff;
  font-size: 40px;
  margin-bottom: 28px;
}

.about-vision-content p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 18px;
  line-height: 1.8;
  margin-bottom: 12px;
}

.btn-outline-white {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.8);
  color: #ffffff;
  font-size: var(--font-button);
  font-weight: 500;
  border-radius: 50px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s ease;
  margin-top: 28px;
}

.btn-outline-white:hover {
  background: #ffffff;
  color: #0a0e1a;
  border-color: #ffffff;
}

.btn-outline-white .arrow-icon {
  transition: transform 0.3s ease;
}

.btn-outline-white:hover .arrow-icon {
  transform: translateX(4px);
}

/* ===== Contact Page ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info .section-label {
  margin-bottom: 12px;
}

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

.contact-intro {
  color: var(--color-muted);
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 32px;
}

.contact-items {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 32px;
}

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

.contact-item-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  background: var(--color-primary-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.contact-item-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contact-item-label {
  font-size: 13px;
  color: var(--color-light);
}

.contact-item-value {
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
}

a.contact-item-value {
  transition: color var(--transition);
}

a.contact-item-value:hover {
  color: var(--color-primary);
}

.contact-map {
  border-radius: var(--card-radius);
  overflow: hidden;
  aspect-ratio: 2/1;
}

.contact-map img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== Contact Form ===== */
.contact-form-wrap {
  position: sticky;
  top: calc(var(--nav-height) + 24px);
}

.contact-form-card {
  background: linear-gradient(135deg, var(--color-card), var(--color-card-end));
  border-radius: var(--card-radius);
  padding: 40px;
}

.contact-form-card h3 {
  font-size: 24px;
  margin-bottom: 8px;
}

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

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

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

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

.form-required {
  color: var(--color-primary);
}

.form-group input,
.form-group textarea {
  padding: 12px 16px;
  font-size: 15px;
  font-family: inherit;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: #fff;
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-light);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-group input.form-error,
.form-group textarea.form-error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(255, 77, 79, 0.1);
}

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

.btn-submit {
  width: 100%;
  padding: 16px;
  font-size: 16px;
  justify-content: center;
  gap: 8px;
}

.btn-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.btn-loading {
  align-items: center;
  gap: 8px;
}

.form-privacy {
  font-size: 12px;
  color: var(--color-light);
  text-align: center;
  margin-top: -8px;
}

.form-message {
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 14px;
  text-align: center;
}

.form-success-msg {
  background: rgba(82, 196, 26, 0.1);
  color: #52C41A;
  border: 1px solid rgba(82, 196, 26, 0.3);
}

.form-error-msg {
  background: rgba(255, 77, 79, 0.1);
  color: #FF4D4F;
  border: 1px solid rgba(255, 77, 79, 0.3);
}

/* ===== Breadcrumb ===== */
.breadcrumb-bar {
  margin-top: var(--nav-height);
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-light);
}

.breadcrumb a {
  color: var(--color-muted);
  transition: color var(--transition);
}

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

.breadcrumb-sep {
  color: var(--color-border);
}

.breadcrumb-current {
  color: var(--color-text);
  font-weight: 500;
}

/* ===== Product Detail ===== */
.section-pt-sm {
  padding-top: 48px;
}

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

.product-detail-img {
  border-radius: var(--card-radius);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--color-surface);
}

.product-detail-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-detail-category {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
}

.product-detail-info h1 {
  font-size: 32px;
  margin-bottom: 16px;
  line-height: 1.3;
}

.product-detail-desc {
  color: var(--color-muted);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 24px;
}

.product-detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.product-detail-tag {
  padding: 6px 16px;
  font-size: 13px;
  color: var(--color-primary);
  background: var(--color-primary-light);
  border-radius: 20px;
  font-weight: 500;
}

.product-detail-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ===== Specs Table ===== */
.specs-table-wrap {
  background: #fff;
  border-radius: var(--card-radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

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

.specs-table th,
.specs-table td {
  padding: 16px 24px;
  font-size: 15px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.specs-table th {
  width: 15%;
  font-weight: 600;
  color: var(--color-text);
  background: var(--color-surface);
  white-space: nowrap;
}

.specs-table td {
  width: 35%;
  color: var(--color-muted);
}

.specs-table tr:last-child th,
.specs-table tr:last-child td {
  border-bottom: none;
}

/* ===== Article Hero ===== */
.article-hero {
  margin-top: var(--nav-height);
  padding: 60px 0 40px;
  background: var(--color-bg);
}

.article-hero-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.article-meta-date {
  display: inline-block;
  font-size: 14px;
  color: var(--color-light);
  margin-bottom: 16px;
}

.article-hero h1 {
  font-size: 36px;
  line-height: 1.3;
  margin-bottom: 16px;
}

.article-hero-desc {
  font-size: 18px;
  color: var(--color-muted);
  line-height: 1.7;
}

/* ===== Article Cover ===== */
.article-cover {
  border-radius: var(--card-radius);
  overflow: hidden;
  aspect-ratio: 2/1;
}

.article-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== Article Content ===== */
.article-content-wrap {
  max-width: 800px;
  margin: 0 auto;
}

.rich-text h2 {
  font-size: 24px;
  margin-top: 40px;
  margin-bottom: 16px;
}

.rich-text p {
  color: var(--color-muted);
  font-size: 16px;
  line-height: 1.9;
  margin-bottom: 20px;
}

.rich-text blockquote {
  margin: 32px 0;
  padding: 24px 32px;
  border-left: 3px solid var(--color-primary);
  background: var(--color-primary-light);
  border-radius: 0 12px 12px 0;
}

.rich-text blockquote p {
  color: var(--color-text);
  font-style: italic;
  margin-bottom: 0;
}

/* ===== Article Meta Bar ===== */
.article-meta-bar {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.article-share {
  display: flex;
  align-items: center;
  gap: 12px;
}

.article-share-label {
  font-size: 14px;
  color: var(--color-light);
}

.article-share-btn {
  font-size: 13px;
  color: var(--color-muted);
  padding: 6px 16px;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  transition: all var(--transition);
}

.article-share-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 14px;
}

/* ===== Quality Page: System Section ===== */
.qualit-system {
  position: relative;
  overflow: hidden;
}

.qualit-system-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(248,248,248,0.95) 0%, rgba(255,255,255,0.85) 100%);
  z-index: 0;
}

.qualit-system .container {
  position: relative;
  z-index: 1;
}

.qualit-system-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.qualit-system-le .section-label {
  margin-bottom: 16px;
}

.qualit-system-le h2 {
  margin-bottom: 24px;
}

.qualit-system-subtit {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.qualit-system-text {
  font-size: var(--font-body);
  line-height: 1.9;
  color: var(--color-muted);
}

.qualit-system-text .highlight {
  color: var(--color-primary);
  font-weight: 600;
}

.qualit-system-cert {
  display: block;
  position: relative;
  border-radius: var(--card-radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
  aspect-ratio: 20 / 7;
}

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

.qualit-system-cert img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.qualit-system-cert-label {
  position: absolute;
  bottom: 16px;
  left: 16px;
  background: rgba(255, 255, 255, 0.95);
  color: var(--color-text);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 8px;
  backdrop-filter: blur(8px);
}

/* ===== Quality Page: Tabs Section ===== */
.qualit-substan .section-header {
  margin-bottom: 48px;
}

.qualit-tabs {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 48px;
  align-items: start;
}

.qualit-tabs-nav {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.qualit-tab-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px 28px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  margin-bottom: 12px;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}

.qualit-tab-item:hover,
.qualit-tab-item.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  transform: translateX(8px);
  box-shadow: 0 4px 16px rgba(230, 0, 18, 0.2);
}

.qualit-tab-num {
  font-size: 24px;
  font-weight: 700;
  opacity: 0.4;
  transition: opacity var(--transition);
}

.qualit-tab-item:hover .qualit-tab-num,
.qualit-tab-item.active .qualit-tab-num {
  opacity: 1;
}

.qualit-tab-title {
  font-size: 16px;
  font-weight: 500;
  flex: 1;
}

.qualit-tab-arrow {
  opacity: 0;
  transition: all var(--transition);
  transform: translateX(-8px);
}

.qualit-tab-item:hover .qualit-tab-arrow,
.qualit-tab-item.active .qualit-tab-arrow {
  opacity: 1;
  transform: translateX(0);
}

.qualit-tabs-panels {
  position: relative;
  min-height: 300px;
}

.qualit-tab-panel {
  display: none;
  animation: qualTabFadeIn 0.4s ease;
}

.qualit-tab-panel.active {
  display: block;
}

@keyframes qualTabFadeIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.qualit-tab-panel-content {
  background: #fff;
  border-radius: var(--card-radius);
  padding: 48px;
  box-shadow: var(--shadow-card);
}

.qualit-tab-panel-content h3 {
  font-size: 24px;
  margin-bottom: 20px;
  color: var(--color-text);
}

.qualit-tab-panel-content p {
  font-size: var(--font-body);
  line-height: 1.9;
  color: var(--color-muted);
  margin-bottom: 32px;
}

/* ===== Document Card ===== */
.doc-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 24px;
  background: linear-gradient(135deg, var(--color-surface) 0%, #fff 100%);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  transition: all var(--transition);
  max-width: 400px;
}

.doc-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 20px rgba(230, 0, 18, 0.1);
  transform: translateY(-2px);
}

.doc-card-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  border-radius: 12px;
  color: var(--color-primary);
}

.doc-card-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.doc-card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
}

.doc-card-action {
  font-size: 14px;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 4px;
  font-weight: 500;
}

/* ===== Certificate Image ===== */
.cert-image {
  margin-top: 24px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  max-width: 300px;
}

.cert-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform var(--transition);
}

.cert-image:hover img {
  transform: scale(1.02);
}

/* ===== Quality Page Responsive ===== */
@media (max-width: 1024px) {
  .qualit-system-wrap {
    grid-template-columns: 1fr;
    gap: 48px;
  }

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

  .qualit-tabs-nav {
    flex-direction: row;
    overflow-x: auto;
    gap: 12px;
    padding-bottom: 8px;
  }

  .qualit-tab-item {
    min-width: 200px;
    margin-bottom: 0;
  }

  .qualit-tab-item:hover,
  .qualit-tab-item.active {
    transform: translateY(-4px);
  }
}

@media (max-width: 768px) {
  .qualit-system-wrap {
    gap: 32px;
  }

  .qualit-tab-panel-content {
    padding: 32px 24px;
  }

  .qualit-tab-panel-content h3 {
    font-size: 20px;
  }

  .doc-card {
    max-width: 100%;
  }

  .qualit-tabs-nav {
    flex-direction: column;
  }

  .qualit-tab-item {
    min-width: auto;
  }
}

/* ===== Responsive: Detail Pages ===== */
@media (max-width: 1024px) {
  .product-detail-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .article-hero h1 {
    font-size: 28px;
  }
}

@media (max-width: 768px) {
  .specs-table th,
  .specs-table td {
    padding: 12px 16px;
    font-size: 14px;
  }

  .article-hero {
    padding: 40px 0 24px;
  }

  .article-hero h1 {
    font-size: 24px;
  }

  .article-hero-desc {
    font-size: 16px;
  }

  .article-meta-bar {
    flex-direction: column;
    align-items: flex-start;
  }

  .product-detail-actions {
    flex-direction: column;
  }

  .product-detail-actions .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  max-height: 900px;
  display: flex;
  align-items: center;
  overflow: hidden;
  margin-top: var(--nav-height);
}

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

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,0,0,0.65) 0%, rgba(0,0,0,0.3) 50%, rgba(230,0,18,0.15) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.hero-content .section-label {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 20px;
}

.hero h1 {
  font-size: var(--font-display);
  color: #fff;
  margin-bottom: 24px;
  line-height: 1.15;
}

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

.hero p {
  font-size: var(--font-body-lg);
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 40px;
  line-height: 1.7;
}

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

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 12px;
  letter-spacing: 2px;
  animation: scrollBounce 2s ease-in-out infinite;
}

.hero-scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.6), transparent);
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ===== About Brief ===== */
.about-brief {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-brief-text h2 {
  margin-bottom: 24px;
}

.about-brief-text p {
  color: var(--color-muted);
  margin-bottom: 16px;
  font-size: var(--font-body-lg);
  line-height: 1.8;
}

.about-brief-text .highlight {
  font-style: italic;
  color: var(--color-text);
  border-left: 3px solid var(--color-primary);
  padding-left: 20px;
  margin: 24px 0;
}

.about-brief-img {
  position: relative;
  border-radius: var(--card-radius);
  overflow: hidden;
  aspect-ratio: 4/3;
}

.about-brief-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}

.about-brief-img:hover img {
  transform: scale(1.05);
}

.about-brief-img::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40%;
  background: linear-gradient(to top, rgba(230,0,18,0.1), transparent);
}

/* ===== Products ===== */
.product-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
}

.product-tab {
  padding: 10px 28px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--btn-radius);
  transition: all var(--transition);
  cursor: pointer;
}

.product-tab:hover,
.product-tab.active {
  color: #fff;
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.product-card {
  background: linear-gradient(135deg, var(--color-card), var(--color-card-end));
  border-radius: var(--card-radius);
  overflow: hidden;
  transition: all var(--transition);
  cursor: pointer;
}

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

.product-card-img {
  aspect-ratio: 4/3;
  overflow: hidden;
  position: relative;
}

.product-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}

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

.product-card-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 4px 14px;
  font-size: 12px;
  font-weight: 600;
  color: #fff;
  background: var(--color-primary);
  border-radius: 20px;
}

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

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

.product-card-body .category {
  font-size: 13px;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 12px;
}

.product-card-body p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

.product-card-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition);
}

.product-card:hover .product-card-link {
  gap: 10px;
}

/* ===== Solutions ===== */
.solutions-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.solution-card {
  position: relative;
  border-radius: var(--card-radius);
  overflow: hidden;
  aspect-ratio: 16/10;
  cursor: pointer;
  group: true;
}

.solution-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.solution-card:hover img {
  transform: scale(1.05);
}

.solution-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0.1) 60%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 40px;
  transition: background var(--transition);
}

.solution-card:hover .solution-card-overlay {
  background: linear-gradient(to top, rgba(230,0,18,0.8) 0%, rgba(0,0,0,0.2) 60%, transparent 100%);
}

.solution-card-overlay h3 {
  color: #fff;
  font-size: 24px;
  margin-bottom: 8px;
}

.solution-card-overlay p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 15px;
  margin-bottom: 20px;
}

.solution-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.solution-tag {
  padding: 4px 14px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.15);
  border-radius: 20px;
  backdrop-filter: blur(4px);
}

/* ===== Values ===== */
.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.value-card {
  text-align: center;
  padding: 48px 32px;
  background: linear-gradient(135deg, var(--color-card), var(--color-card-end));
  border-radius: var(--card-radius);
  transition: all var(--transition);
}

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

.value-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 24px;
  background: var(--color-primary-light);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--color-primary);
  transition: all var(--transition);
}

.value-card:hover .value-icon {
  background: var(--color-primary);
  color: #fff;
  transform: scale(1.1);
}

.value-card h3 {
  margin-bottom: 4px;
  font-size: 20px;
}

.value-card .en {
  font-size: 13px;
  color: var(--color-light);
  font-weight: 400;
  margin-bottom: 16px;
  display: block;
}

.value-card p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
}

/* ===== News ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.news-card {
  background: linear-gradient(135deg, var(--color-card), var(--color-card-end));
  border-radius: var(--card-radius);
  overflow: hidden;
  transition: all var(--transition);
  cursor: pointer;
}

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

.news-card-img {
  aspect-ratio: 16/9;
  overflow: hidden;
}

.news-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}

.news-card:hover .news-card-img img {
  transform: scale(1.05);
}

.news-card-body {
  padding: 24px;
}

.news-card-date {
  font-size: 13px;
  color: var(--color-light);
  margin-bottom: 8px;
}

.news-card-body h3 {
  font-size: 18px;
  margin-bottom: 12px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-body p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== Final CTA ===== */
.final-cta {
  background: var(--color-footer);
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.final-cta::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(230,0,18,0.15), transparent 70%);
  border-radius: 50%;
}

.final-cta::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(230,0,18,0.1), transparent 70%);
  border-radius: 50%;
}

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

.final-cta h2 {
  color: #fff;
  font-size: var(--font-h1);
  margin-bottom: 16px;
}

.final-cta p {
  font-size: var(--font-body-lg);
  color: var(--color-footer-text);
  margin-bottom: 40px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.final-cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.footer {
  background: #1a1a1a;
  color: var(--color-footer-text);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1.5fr;
  gap: 32px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-brand .logo img {
  height: 36px;
  filter: brightness(0) invert(1);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: #999;
  max-width: 320px;
}

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

.footer-col a {
  display: block;
  padding: 4px 0;
  font-size: 14px;
  color: #999;
  transition: color var(--transition);
}

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

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 14px;
  color: #999;
}

.footer-contact-item .icon {
  width: 20px;
  flex-shrink: 0;
  color: var(--color-primary);
  font-size: 16px;
  margin-top: 2px;
}

.footer-contact-item a {
  color: #999;
  transition: color var(--transition);
}

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

.footer-bottom {
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: #666;
}

.footer-bottom a {
  color: #666;
  transition: color var(--transition);
}

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

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

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

.fade-in-up.delay-1 { transition-delay: 0.1s; }
.fade-in-up.delay-2 { transition-delay: 0.2s; }
.fade-in-up.delay-3 { transition-delay: 0.3s; }
.fade-in-up.delay-4 { transition-delay: 0.4s; }

/* ===== Responsive ===== */
@media (max-width: 1440px) {
  :root {
    --content-padding: 48px;
  }
}

@media (max-width: 1024px) {
  :root {
    --content-padding: 32px;
    --section-gap: 80px;
    --font-display: 42px;
    --font-h1: 36px;
    --font-h2: 28px;
  }

  .nav {
    display: none;
  }

  .header-cta {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .mobile-nav {
    display: block;
  }

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

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

  .about-intro-grid-reverse {
    direction: ltr;
  }

  .about-vision {
    padding: 80px 24px;
  }

  .about-vision-content {
    padding: 40px 24px;
  }

  .about-vision-content h2 {
    font-size: 28px;
  }

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

  .contact-form-wrap {
    position: static;
  }

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

  .contact-form-card {
    padding: 28px;
  }

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

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

  .solutions-detail-grid {
    gap: 48px;
  }

  .solution-detail-card {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .solution-detail-card-reverse {
    direction: ltr;
  }

  .solutions-energy-grid {
    grid-template-columns: 1fr;
  }

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

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

  .news-list-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  :root {
    --content-padding: 20px;
    --section-gap: 64px;
    --font-display: 32px;
    --font-h1: 28px;
    --font-h2: 24px;
    --font-body-lg: 18px;
  }

  .hero {
    min-height: 500px;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

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

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

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

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

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

  .solution-card-overlay {
    padding: 24px;
  }

  .section-header {
    margin-bottom: 40px;
  }
}

@media (max-width: 480px) {
  :root {
    --font-display: 28px;
    --section-gap: 48px;
  }

  .product-tabs {
    flex-wrap: wrap;
  }

  .final-cta-actions {
    flex-direction: column;
    align-items: center;
  }

  .final-cta-actions .btn {
    width: 100%;
    max-width: 280px;
  }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .fade-in-up {
    opacity: 1;
    transform: none;
  }
}