/* ==========================================
   颐康食品 - 企业官网样式
   主色调：绿色系
   ========================================== */

/* ---------- CSS Variables ---------- */
:root {
  --green-50: #f0fdf4;
  --green-100: #dcfce7;
  --green-200: #bbf7d0;
  --green-300: #86efac;
  --green-400: #4ade80;
  --green-500: #22c55e;
  --green-600: #16a34a;
  --green-700: #15803d;
  --green-800: #166534;
  --green-900: #14532d;
  --green-950: #052e16;

  --emerald-500: #10b981;
  --emerald-600: #059669;
  --emerald-700: #047857;
  --emerald-800: #065f46;
  --emerald-900: #064e3b;

  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;

  --white: #ffffff;
  --black: #000000;

  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;

  --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);

  --max-width: 1200px;
  --header-height: 5rem;
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--slate-800);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition-base);
  line-height: 1.4;
  white-space: nowrap;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.05rem;
  border-radius: var(--radius-lg);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--green-600), var(--emerald-700));
  color: var(--white);
  box-shadow: 0 4px 15px rgba(22, 163, 74, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(22, 163, 74, 0.4);
}

.btn-outline {
  border: 2px solid var(--white);
  color: var(--white);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

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

/* ---------- Header / Navigation ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--green-100);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-lg);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: var(--transition-base);
}

.logo-link:hover {
  transform: scale(1.02);
}

.logo-img {
  height: 40px;
  width: auto;
  object-fit: contain;
  flex-shrink: 0;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--green-800), var(--emerald-700));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--slate-600);
  transition: var(--transition-base);
  position: relative;
}

.nav-item i {
  font-size: 0.85rem;
}

.nav-item:hover,
.nav-item.active {
  color: var(--green-700);
  background: var(--green-50);
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: 0.75rem;
}

.lang-btn {
  padding: 0.25rem 0.5rem;
  background: transparent;
  color: var(--slate-500);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition-fast);
  line-height: 1.4;
}

.lang-btn:hover {
  color: var(--green-700);
  background: var(--green-50);
}

.lang-btn.active {
  background: var(--green-600);
  color: var(--white);
  border-color: var(--green-600);
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  cursor: pointer;
  position: relative;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--slate-800);
  border-radius: 2px;
  transition: var(--transition-base);
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

body.menu-open {
  overflow: hidden;
}

.mobile-menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  padding: 0 1.5rem 1.5rem;
  background: var(--white);
  border-bottom: 1px solid var(--green-100);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

.mobile-menu.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.mobile-nav-item {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--slate-100);
}

.mobile-lang {
  display: flex;
  gap: 0.5rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--slate-200);
  margin-bottom: 0.5rem;
}

.mobile-lang .lang-btn {
  padding: 0.375rem 0.75rem;
  font-size: 0.8rem;
}

/* ---------- Hero Section ---------- */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

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

.hero-bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1.5s ease-in-out;
}

.hero-bg-img.active {
  opacity: 1;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    135deg,
    rgba(5, 46, 22, 0.85) 0%,
    rgba(6, 78, 59, 0.75) 40%,
    rgba(20, 83, 45, 0.6) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--white);
  padding: 2rem 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.25rem;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.8s ease-out;
}

.hero-badge i {
  color: var(--green-400);
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1rem;
  background: linear-gradient(to right, var(--white), var(--green-200));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeInUp 0.8s ease-out 0.15s both;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 2.5rem;
  animation: fadeInUp 0.8s ease-out 0.3s both;
}

.highlight-count {
  display: inline-block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--green-400);
  vertical-align: middle;
  margin: 0 0.25rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease-out 0.45s both;
}

.hero-dots {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 3rem;
  animation: fadeInUp 0.8s ease-out 0.6s both;
}

.hero-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  cursor: pointer;
  transition: var(--transition-base);
}

.hero-dot.active {
  background: var(--green-400);
  transform: scale(1.3);
}

.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.75rem;
  animation: bounce 2s infinite;
}

.hero-scroll i {
  font-size: 1rem;
}

/* ---------- Sections Common ---------- */
.section {
  padding: 6rem 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-label {
  display: inline-block;
  padding: 0.375rem 1rem;
  background: var(--green-100);
  color: var(--green-700);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.section-header.light .section-label {
  background: rgba(255, 255, 255, 0.15);
  color: var(--green-200);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--slate-900);
  margin-bottom: 0.75rem;
  letter-spacing: -0.025em;
}

.section-header.light .section-title {
  color: var(--white);
}

.section-desc {
  font-size: 1.1rem;
  color: var(--slate-500);
  max-width: 600px;
  margin: 0 auto;
}

.section-header.light .section-desc {
  color: rgba(255, 255, 255, 0.7);
}

.section-footer {
  text-align: center;
  margin-top: 3rem;
}

/* ---------- Products Section ---------- */
.products-section {
  background: linear-gradient(180deg, var(--white) 0%, var(--green-50) 100%);
}

.products-filter {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

/* 内销/外销 主Tab */
.products-main-tabs {
  display: flex;
  justify-content: center;
  gap: 0;
  margin-bottom: 2rem;
  background: var(--slate-100);
  border-radius: var(--radius-lg);
  padding: 0.375rem;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

.main-tab-btn {
  padding: 0.75rem 2rem;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  color: var(--slate-600);
  background: transparent;
  transition: var(--transition-base);
  border: none;
  cursor: pointer;
}

.main-tab-btn.active {
  background: var(--white);
  color: var(--green-700);
  box-shadow: var(--shadow-sm);
}

.main-tab-btn:hover:not(.active) {
  color: var(--green-600);
}

.filter-btn {
  padding: 0.625rem 1.5rem;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--slate-600);
  background: var(--white);
  border: 1px solid var(--slate-200);
  transition: var(--transition-base);
}

.filter-btn:hover {
  border-color: var(--green-400);
  color: var(--green-700);
}

.filter-btn.active {
  background: linear-gradient(135deg, var(--green-600), var(--emerald-600));
  color: var(--white);
  border-color: transparent;
  box-shadow: 0 4px 12px rgba(22, 163, 74, 0.3);
}

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

.product-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform 0.3s ease, box-shadow 0.3s ease, opacity 0.3s ease;
  cursor: pointer;
  border: 1px solid var(--green-100);
  opacity: 1;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl), 0 10px 40px rgba(22, 163, 74, 0.1);
}

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

.product-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.product-card:hover .product-image-wrap img {
  transform: scale(1.08);
}

.product-category {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.25rem 0.75rem;
  background: rgba(22, 101, 52, 0.85);
  color: var(--green-200);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  backdrop-filter: blur(4px);
}

.product-info {
  padding: 1.25rem;
}

.product-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 0.5rem;
}

.product-desc {
  font-size: 0.9rem;
  color: var(--slate-500);
  line-height: 1.5;
  margin-bottom: 1rem;
}

.product-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--green-600);
  transition: var(--transition-fast);
}

.product-link i {
  font-size: 0.7rem;
  transition: var(--transition-fast);
}

.product-link:hover i {
  transform: translateX(3px);
}

/* ---------- About Section ---------- */
.about-section {
  background: linear-gradient(135deg, var(--green-900) 0%, var(--emerald-900) 50%, var(--green-950) 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.about-bg-decor {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(34, 197, 94, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(16, 185, 129, 0.06) 0%, transparent 50%);
}

.about-layout {
  max-width: 900px;
  margin: 0 auto;
}

.about-text-center {
  text-align: center;
  margin-bottom: 3rem;
}

.about-intro {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.9;
  margin-bottom: 1rem;
}

.about-features-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 3rem;
}

.about-features-row .feature-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1rem;
  padding: 1.75rem 1.25rem;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: var(--transition-base);
}

.about-features-row .feature-item:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
}

.about-features-row .feature-icon {
  width: 3rem;
  height: 3rem;
  background: rgba(34, 197, 94, 0.2);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--green-300);
  flex-shrink: 0;
  font-size: 1.3rem;
}

.about-features-row .feature-content h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.35rem;
}

.about-features-row .feature-content p {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.5;
}

/* 统计卡片 */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.stat-card {
  text-align: center;
  padding: 2rem 1.5rem;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  transition: var(--transition-base);
}

.stat-card:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-4px);
}

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  color: var(--green-300);
  line-height: 1.1;
  display: inline;
}

.stat-suffix {
  display: inline;
  font-size: 2rem;
  font-weight: 800;
  color: var(--green-400);
  margin-left: 0.25rem;
}

.stat-label {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 0.5rem;
}

/* ---------- Strength Section ---------- */
.strength-section {
  background: var(--slate-50);
}

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

.strength-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition-base);
  border: 1px solid var(--slate-100);
}

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

.strength-img {
  height: 220px;
  overflow: hidden;
}

.strength-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

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

.strength-info {
  padding: 1.5rem;
}

.strength-info h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 0.5rem;
}

.strength-info p {
  font-size: 0.9rem;
  color: var(--slate-500);
  line-height: 1.6;
}

/* ---------- News Section ---------- */
.news-section {
  background: linear-gradient(to bottom, var(--white) 0%, rgba(220, 252, 231, 0.3) 100%);
}

.news-cat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.news-cat-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 2.5rem 2rem;
  background: var(--white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-md);
  text-decoration: none;
  transition: all 0.3s ease;
  border: 1px solid var(--slate-100);
  position: relative;
  overflow: hidden;
}

.news-cat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--green-500), var(--emerald-500));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.news-cat-card:hover {
  box-shadow: var(--shadow-xl);
  border-color: var(--green-200);
  transform: translateY(-2px);
}

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

.news-cat-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-xl);
  background: var(--green-100);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  transition: all 0.3s ease;
}

.news-cat-icon i {
  font-size: 1.75rem;
  color: var(--green-600);
  transition: all 0.3s ease;
}

.news-cat-card:hover .news-cat-icon {
  background: var(--green-500);
}

.news-cat-card:hover .news-cat-icon i {
  color: var(--white);
}

.news-cat-icon-alt {
  background: var(--emerald-100);
}

.news-cat-icon-alt i {
  color: var(--emerald-600);
}

.news-cat-card:hover .news-cat-icon-alt {
  background: var(--emerald-500);
}

.news-cat-card:hover .news-cat-icon i {
  color: var(--white);
}

.news-cat-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 0.5rem;
  transition: color 0.3s ease;
}

.news-cat-card:hover .news-cat-title {
  color: var(--green-600);
}

.news-cat-desc {
  font-size: 0.95rem;
  color: var(--slate-500);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.news-cat-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--green-600);
  transition: gap 0.3s ease;
}

.news-cat-card:hover .news-cat-link {
  gap: 0.625rem;
}

/* News list view */
.news-list-view {
  max-width: 900px;
  margin: 0 auto;
}

.news-list-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--green-100);
}

.news-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--green-50);
  color: var(--green-700);
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.news-back-btn:hover {
  background: var(--green-100);
  color: var(--green-800);
}

.news-list-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--slate-900);
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.news-item {
  display: flex;
  gap: 1.5rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--slate-100);
  text-decoration: none;
  transition: var(--transition-fast);
  cursor: pointer;
}

.news-item:last-child {
  border-bottom: none;
}

.news-item:hover {
  background: var(--green-50);
  margin: 0 -1rem;
  padding-left: 1rem;
  padding-right: 1rem;
  border-radius: var(--radius-lg);
}

.news-item-date {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--green-600), var(--emerald-600));
  border-radius: var(--radius-md);
  color: var(--white);
  flex-shrink: 0;
}

.nd-day {
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1;
}

.nd-month {
  font-size: 0.7rem;
  font-weight: 500;
  margin-top: 0.25rem;
  opacity: 0.85;
}

.news-item-body {
  flex: 1;
  min-width: 0;
}

.news-item-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 0.5rem;
  line-height: 1.4;
  transition: color 0.2s ease;
}

.news-item:hover .news-item-title {
  color: var(--green-600);
}

.news-item-excerpt {
  font-size: 0.9rem;
  color: var(--slate-500);
  line-height: 1.6;
  margin-bottom: 0.75rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-item-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--green-600);
  transition: gap 0.2s ease;
}

.news-item:hover .news-item-link {
  gap: 0.5rem;
}

/* ---------- Network Section ---------- */
.network-section {
  background: linear-gradient(135deg, var(--emerald-900), var(--green-800), var(--emerald-700));
  color: var(--white);
}

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

.network-card {
  text-align: center;
  padding: 2.5rem 1.5rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  transition: var(--transition-base);
  backdrop-filter: blur(8px);
}

.network-card:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-4px);
  border-color: var(--green-300);
}

.network-card i {
  font-size: 2.5rem;
  color: var(--green-300);
  margin-bottom: 1rem;
  display: inline-block;
}

.network-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.network-card p {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
}

/* ---------- Contact Section ---------- */
.contact-section {
  background: linear-gradient(180deg, var(--white) 0%, var(--green-50) 100%);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.contact-form-wrap {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--slate-100);
}

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

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--slate-700);
  margin-bottom: 0.5rem;
}

.required {
  color: var(--green-600);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--slate-800);
  transition: var(--transition-fast);
  background: var(--slate-50);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--green-500);
  box-shadow: 0 0 0 3px var(--green-100);
  background: var(--white);
}

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

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

.contact-info-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--slate-100);
}

.contact-info-item {
  display: flex;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--slate-100);
}

.contact-info-item:last-child {
  border-bottom: none;
}

.contact-info-icon {
  width: 2.75rem;
  height: 2.75rem;
  background: linear-gradient(135deg, var(--green-500), var(--emerald-600));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  flex-shrink: 0;
}

.contact-info-item h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 0.25rem;
}

.contact-info-item p {
  font-size: 0.9rem;
  color: var(--slate-500);
  line-height: 1.6;
}

.contact-map {
  border-radius: var(--radius-xl);
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-lg);
}

.contact-map img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.map-btn {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  border-color: var(--green-600);
  color: var(--green-700);
  background: rgba(255, 255, 255, 0.95);
  white-space: nowrap;
}

.map-btn:hover {
  background: var(--green-600);
  color: var(--white);
}

/* ---------- Footer ---------- */
.footer {
  background: linear-gradient(135deg, var(--slate-900), var(--green-950));
  color: var(--white);
  padding: 4rem 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer-logo i {
  color: var(--green-400);
  font-size: 1.5rem;
}

.footer-brand-desc {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.8;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  color: var(--white);
}

.footer-links li,
.footer-contact li {
  padding: 0.4rem 0;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.55);
  transition: var(--transition-fast);
}

.footer-links li:hover {
  color: var(--green-300);
  padding-left: 0.25rem;
}

.footer-contact li i {
  width: 1.25rem;
  color: var(--green-400);
  margin-right: 0.25rem;
}

.footer-qr .qr-placeholder {
  width: 120px;
  height: 120px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px dashed rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.3);
  gap: 0.5rem;
  font-size: 0.8rem;
}

.footer-bottom {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  padding: 1.5rem 0;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.4);
  flex-wrap: wrap;
}

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

.footer-icp:hover {
  color: var(--green-300);
}

/* ---------- Back to Top ---------- */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
  width: 3rem;
  height: 3rem;
  background: linear-gradient(135deg, var(--green-600), var(--emerald-600));
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: 0 4px 15px rgba(22, 163, 74, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(1rem);
  transition: var(--transition-base);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(22, 163, 74, 0.5);
}

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

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

/* ---------- Scroll-reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .news-cat-grid { gap: 1.5rem; }
  .network-map { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .header-inner { height: 4rem; }
  :root { --header-height: 4rem; }

  .nav-desktop { display: none; }
  .menu-toggle { display: flex; }

  .hero-title { font-size: 2.25rem; }
  .hero-subtitle { font-size: 1.05rem; }
  .hero-badge { font-size: 0.8rem; }

  .section { padding: 4rem 0; }
  .section-title { font-size: 1.75rem; }

  .products-grid { grid-template-columns: 1fr; }
  .about-features-row { grid-template-columns: repeat(2, 1fr); }
  .stats-row { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
  .stat-number { font-size: 2.5rem; }
  .stat-suffix { font-size: 1.75rem; }

  .strength-grid { grid-template-columns: 1fr; }
  .news-cat-grid { grid-template-columns: 1fr; }
  .news-item { flex-direction: column; gap: 0.75rem; }
  .news-item-date { flex-direction: row; gap: 0.375rem; min-width: auto; height: auto; padding: 0.375rem 0.75rem; }
  .nd-month { margin-top: 0; }
  .news-list-header { flex-direction: column; align-items: flex-start; gap: 0.75rem; }
  .network-map { grid-template-columns: 1fr 1fr; }

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

  .products-main-tabs { flex-direction: column; width: 100%; }
  .main-tab-btn { width: 100%; text-align: center; }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 1.75rem; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .products-main-tabs { flex-direction: column; width: auto; }
  .about-features-row { grid-template-columns: 1fr; }
  .network-map { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-actions .btn { width: 100%; justify-content: center; }
}