/* ============================================
   科米尼斯节能 - 环保行业高级设计系统
   ============================================ */

:root {
    --green-50: #F0F7EE;
    --green-100: #D4EDCC;
    --green-200: #A8D99A;
    --green-300: #7BC468;
    --green-400: #52B03A;
    --green-500: #2D8B1A;
    --green-600: #1E6B10;
    --green-700: #154F0B;
    --green-800: #0D3506;
    --green-900: #071E03;
    
    --earth-50: #FBF8F3;
    --earth-100: #F5F0E8;
    --earth-200: #E8DFD0;
    --earth-300: #D4C8B0;
    --earth-400: #B8A888;
    --earth-500: #9C8B6A;
    --earth-600: #7D6D50;
    --earth-700: #5E503A;
    --earth-800: #3F3525;
    --earth-900: #201B12;
    
    --sky-50: #F0F7FF;
    --sky-400: #60A5FA;
    --sky-500: #3B82F6;
    --sky-600: #2563EB;
    
    --bg-body: var(--earth-50);
    --bg-white: #FFFFFF;
    --bg-cream: var(--earth-100);
    --bg-green-light: var(--green-50);
    --bg-dark: var(--earth-900);
    --bg-dark-green: var(--green-800);
    
    --text-heading: var(--earth-900);
    --text-body: var(--earth-700);
    --text-muted: var(--earth-400);
    --text-white: #FFFFFF;
    --text-on-green: #FFFFFF;
    
    --accent-green: var(--green-500);
    --accent-green-light: var(--green-400);
    --accent-green-dark: var(--green-600);
    
    --max-width: 1280px;
    --header-height: 80px;
    
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --duration-fast: 200ms;
    --duration-base: 350ms;
    --duration-slow: 600ms;
    
    --shadow-sm: 0 1px 2px rgba(13, 53, 6, 0.04);
    --shadow-md: 0 4px 12px rgba(13, 53, 6, 0.06);
    --shadow-lg: 0 8px 30px rgba(13, 53, 6, 0.08);
    --shadow-xl: 0 16px 48px rgba(13, 53, 6, 0.1);
    --shadow-glow: 0 0 40px rgba(45, 139, 26, 0.15);
    
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-full: 9999px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    font-size: 16px;
    line-height: 1.75;
    color: var(--text-body);
    background: var(--bg-body);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--duration-fast) var(--ease-smooth);
}

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

ul, ol { list-style: none; }

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 48px;
}

/* ============================================
   Typography
   ============================================ */
.heading-xl {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--text-heading);
}

.heading-lg {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--text-heading);
}

.heading-md {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.01em;
    color: var(--text-heading);
}

.heading-sm {
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.35;
    color: var(--text-heading);
}

.text-lead {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-body);
}

.text-small {
    font-size: 0.875rem;
    line-height: 1.6;
}

.text-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

/* ============================================
   Header - 透明到白色过渡
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    z-index: 1000;
    transition: all var(--duration-base) var(--ease-smooth);
}

.header--transparent {
    background: transparent;
}

.header--solid {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(13, 53, 6, 0.06);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    gap: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 14px;
    z-index: 10;
}

.logo img {
    height: 56px;
    width: auto;
    object-fit: contain;
    filter: brightness(0) invert(1);
    transition: filter var(--duration-base) var(--ease-smooth);
}

.header--solid .logo img {
    filter: none;
}

.logo-name {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-white);
    letter-spacing: -0.02em;
    transition: color var(--duration-base) var(--ease-smooth);
}

.header--solid .logo-name {
    color: var(--green-700);
}

.nav {
    flex: 1;
    display: flex;
    justify-content: center;
    min-width: 0;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: nowrap;
    width: 100%;
    justify-content: center;
}

.nav-item {
    flex-shrink: 0;
    position: relative;
}

.nav-item a {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 8px 16px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-body);
    border-radius: var(--radius-full);
    transition: all var(--duration-fast) var(--ease-smooth);
    white-space: nowrap;
}

.nav-item a svg {
    transition: transform var(--duration-fast) var(--ease-smooth);
}

.nav-item--has-dropdown:hover a svg {
    transform: rotate(180deg);
}

.nav-item a:hover {
    color: var(--accent-green);
    background: var(--green-50);
}

.nav-item--active > a {
    color: var(--text-on-green);
    background: var(--accent-green);
    font-weight: 600;
}

.nav-item--active > .nav-dropdown li a {
    color: var(--text-heading);
    background: transparent;
}

.header--transparent .nav-item a {
    color: rgba(255, 255, 255, 0.85);
}

.header--transparent .nav-item a:hover {
    color: var(--text-white);
    background: rgba(255, 255, 255, 0.12);
}

.header--transparent .nav-item--active a {
    color: var(--green-700);
    background: var(--text-white);
}

.header--transparent .nav-dropdown li a {
    color: var(--text-heading) !important;
}

/* Dropdown Menu */
.nav-dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12), 0 4px 12px rgba(0, 0, 0, 0.06);
    padding: 10px;
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-base) var(--ease-smooth);
    z-index: 100;
    border: 1px solid rgba(0, 0, 0, 0.06);
    backdrop-filter: blur(10px);
}

.nav-dropdown::before {
    content: '';
    position: absolute;
    top: -7px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    width: 14px;
    height: 14px;
    background: var(--bg-white);
    border-left: 1px solid rgba(0, 0, 0, 0.06);
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: 3px 0 0 0;
}

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

.nav-dropdown li {
    list-style: none;
}

.nav-dropdown li a {
    display: block;
    padding: 12px 18px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-heading);
    border-radius: var(--radius-sm);
    transition: all var(--duration-fast) var(--ease-smooth);
    white-space: nowrap;
    position: relative;
}

.nav-dropdown li a:hover {
    color: var(--accent-green);
    background: transparent;
    padding-left: 24px;
    transform: translateX(4px);
}

.nav-dropdown li a::before {
    display: none;
}

.nav-dropdown li a::after {
    content: '';
    position: absolute;
    left: 8px;
    top: 50%;
    transform: translateY(-50%) scale(0);
    width: 4px;
    height: 4px;
    background: var(--accent-green);
    border-radius: 50%;
    transition: transform var(--duration-fast) var(--ease-smooth);
}

.nav-dropdown li a:hover::after {
    transform: translateY(-50%) scale(1);
}

.header-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--green-700);
    background: var(--text-white);
    border-radius: var(--radius-full);
    transition: all var(--duration-fast) var(--ease-smooth);
}

.header-cta:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    border-radius: var(--radius-sm);
    z-index: 10;
}

.mobile-menu-btn span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-heading);
    margin: 2.5px 0;
    border-radius: 2px;
    transition: all var(--duration-base) var(--ease-smooth);
}

.header--transparent .mobile-menu-btn span {
    background: var(--text-white);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--green-800);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.5;
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(7, 30, 3, 0.75) 0%,
        rgba(13, 53, 6, 0.5) 50%,
        rgba(45, 139, 26, 0.25) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 140px 0 0;
    max-width: 720px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--green-200);
    background: rgba(45, 139, 26, 0.2);
    border: 1px solid rgba(45, 139, 26, 0.3);
    border-radius: var(--radius-full);
    margin-bottom: 32px;
    letter-spacing: 0.05em;
}

.hero-title {
    font-size: clamp(2.8rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.03em;
    color: var(--text-white);
    margin-bottom: 24px;
}

.hero-title span {
    color: var(--green-300);
}

.hero-desc {
    font-size: 1.15rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 40px;
    max-width: 560px;
}

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

.hero-stats {
    display: flex;
    gap: 48px;
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--green-300);
    line-height: 1;
    letter-spacing: -0.02em;
}

.hero-stat-label {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    margin-top: 8px;
}

/* Wave Divider */
.wave-divider {
    position: relative;
    margin-top: -2px;
}

.wave-divider svg {
    display: block;
    width: 100%;
    height: auto;
}

/* ============================================
   Sections
   ============================================ */
.section {
    padding: 80px 0;
}

.section--cream {
    background: var(--bg-cream);
}

.section--green {
    background: var(--green-50);
}

.section--white {
    background: var(--bg-white);
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 72px;
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-green);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.section-label::before {
    content: '';
    width: 24px;
    height: 2px;
    background: var(--accent-green);
    border-radius: 2px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--text-heading);
    margin-bottom: 16px;
}

.section-desc {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-muted);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 36px;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: inherit;
    border-radius: var(--radius-full);
    cursor: pointer;
    border: none;
    transition: all var(--duration-base) var(--ease-smooth);
    letter-spacing: 0.01em;
}

.btn--primary {
    background: var(--accent-green);
    color: var(--text-on-green);
    box-shadow: 0 4px 16px rgba(45, 139, 26, 0.3);
}

.btn--primary:hover {
    background: var(--accent-green-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(45, 139, 26, 0.35);
}

.btn--outline {
    background: transparent;
    color: var(--text-white);
    border: 1.5px solid rgba(255, 255, 255, 0.3);
}

.btn--outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn--ghost {
    background: transparent;
    color: var(--accent-green);
    border: 1.5px solid var(--accent-green);
}

.btn--ghost:hover {
    background: var(--accent-green);
    color: var(--text-on-green);
}

.btn--text {
    background: transparent;
    color: var(--accent-green);
    padding: 8px 0;
}

.btn--text:hover {
    color: var(--accent-green-dark);
}

.btn--text .btn-arrow {
    transition: transform var(--duration-fast) var(--ease-smooth);
}

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

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

.about-image-wrapper {
    position: relative;
}

.about-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about-image img {
    width: 100%;
    height: 480px;
    object-fit: cover;
}

.about-image-accent {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 200px;
    height: 200px;
    background: var(--green-100);
    border-radius: var(--radius-lg);
    z-index: -1;
}

.about-content {
    padding: 20px 0;
}

.about-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-green);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.about-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--text-heading);
    margin-bottom: 24px;
}

.about-text {
    font-size: 1rem;
    line-height: 1.9;
    color: var(--text-body);
    margin-bottom: 20px;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 36px;
}

.about-feature {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}

.about-feature-icon {
    width: 44px;
    height: 44px;
    background: var(--green-50);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-green);
    flex-shrink: 0;
}

.about-feature-text {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-heading);
    line-height: 1.4;
}

/* ============================================
   Solutions Section
   ============================================ */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

a.solution-card {
    text-decoration: none;
    color: inherit;
    display: block;
}

.solution-card {
    text-align: center;
    padding: 40px 20px;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--earth-200);
    transition: all var(--duration-base) var(--ease-smooth);
    cursor: pointer;
}

.solution-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--green-200);
}

.solution-card--active {
    background: var(--accent-green);
    border-color: var(--accent-green);
}

.solution-card--active .solution-icon {
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-white);
}

.solution-card--active .solution-name {
    color: var(--text-white);
}

.solution-card--active .solution-link {
    color: rgba(255, 255, 255, 0.8);
}

.solution-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: var(--green-50);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-green);
    transition: all var(--duration-base) var(--ease-smooth);
}

.solution-name {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-heading);
    margin-bottom: 12px;
    line-height: 1.4;
}

.solution-link {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent-green);
}

/* ============================================
   Products Section
   ============================================ */
.products-showcase {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.product-showcase-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-white);
    border: 1px solid var(--earth-200);
    transition: all var(--duration-base) var(--ease-smooth);
}

.product-showcase-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

.product-showcase-image {
    height: 280px;
    overflow: hidden;
}

.product-showcase-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--duration-slow) var(--ease-smooth);
}

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

.product-showcase-info {
    padding: 32px;
}

.product-showcase-tag {
    display: inline-block;
    padding: 4px 14px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-green);
    background: var(--green-50);
    border-radius: var(--radius-full);
    margin-bottom: 16px;
}

.product-showcase-name {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.product-showcase-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 20px;
}

/* ============================================
   Why Choose Us
   ============================================ */
.why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.why-card {
    padding: 40px 32px;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--earth-200);
    transition: all var(--duration-base) var(--ease-smooth);
}

.why-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--green-200);
}

.why-card-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--green-100);
    line-height: 1;
    margin-bottom: 20px;
}

.why-card-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 12px;
}

.why-card-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ============================================
   News Section
   ============================================ */
.news-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 32px;
    align-items: stretch;
}

.news-featured {
    height: 100%;
}

.news-side {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.news-card {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--earth-200);
    transition: all var(--duration-base) var(--ease-smooth);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.news-card--featured {
    flex-direction: row;
}

.news-card--featured .news-card-image {
    width: 55%;
    height: auto;
    min-height: 400px;
}

.news-card--featured .news-card-content {
    width: 45%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 40px;
}

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

.news-card-image {
    height: 200px;
    overflow: hidden;
    flex-shrink: 0;
}

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

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

.news-card-content {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.news-card-date {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.news-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-heading);
    line-height: 1.4;
    margin-bottom: 10px;
    transition: color var(--duration-fast) var(--ease-smooth);
}

.news-card--featured .news-card-title {
    font-size: 1.35rem;
}

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

.news-card-excerpt {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card--featured .news-card-excerpt {
    -webkit-line-clamp: 4;
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
    padding: 100px 0;
    background: var(--green-800);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(45, 139, 26, 0.3) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    color: var(--text-white);
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
}

.cta-desc {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.65);
    margin-bottom: 36px;
    line-height: 1.8;
}

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

.cta-phone {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--green-300);
    margin-top: 32px;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, 0.6);
}

.footer-main {
    padding: 80px 0 60px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 60px;
    flex-wrap: wrap;
}

.footer-info {
    flex: 1;
    min-width: 300px;
}

.footer-company-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 4px;
}

.footer-company-name-en {
    font-size: 0.85rem;
    color: var(--green-400);
    margin-bottom: 20px;
}

.footer-info-row {
    display: flex;
    margin-bottom: 10px;
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-info-label {
    color: rgba(255, 255, 255, 0.5);
    min-width: 60px;
    flex-shrink: 0;
}

.footer-info-value {
    color: rgba(255, 255, 255, 0.7);
}

.footer-qrcode {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.footer-qrcode-img {
    width: 120px;
    height: 120px;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.footer-qrcode-text {
    text-align: center;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.5;
}

.footer-brand {
    max-width: 320px;
}

.footer-logo-wrapper {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.footer-logo-img {
    height: 60px;
    width: auto;
    object-fit: contain;
    filter: brightness(0) invert(1);
    opacity: 0.9;
    transition: opacity var(--duration-fast) var(--ease-smooth);
}

.footer-logo-img:hover {
    opacity: 1;
}

.footer-logo-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.footer-logo-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-white);
    letter-spacing: 0.02em;
    line-height: 1.2;
}

.footer-logo-en {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--green-400);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.footer-brand-desc {
    font-size: 0.875rem;
    line-height: 1.8;
    margin-bottom: 24px;
    color: rgba(255, 255, 255, 0.5);
}

.footer-divider {
    height: 1px;
    background: linear-gradient(to right, rgba(255, 255, 255, 0.1), transparent);
    margin-bottom: 24px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.5);
    transition: all var(--duration-fast) var(--ease-smooth);
}

.footer-social a:hover {
    background: var(--accent-green);
    color: var(--text-white);
}

.footer-heading {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-white);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 24px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.footer-links a {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
    transition: color var(--duration-fast) var(--ease-smooth);
}

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

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 18px;
}

.footer-contact-icon {
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--green-400);
    flex-shrink: 0;
}

.footer-contact-text {
    font-size: 0.875rem;
    line-height: 1.6;
}

.footer-contact-text strong {
    display: block;
    color: var(--text-white);
    font-weight: 600;
    margin-bottom: 2px;
}

.footer-bottom {
    padding: 24px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-bottom-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-copyright {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.35);
}

.footer-bottom-links {
    display: flex;
    gap: 24px;
}

.footer-bottom-links a {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.35);
}

.footer-bottom-links a:hover {
    color: var(--green-300);
}

/* ============================================
   Back to Top
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--accent-green);
    color: var(--text-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(45, 139, 26, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--duration-base) var(--ease-smooth);
    z-index: 999;
}

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

.back-to-top:hover {
    background: var(--accent-green-dark);
    transform: translateY(-3px);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1200px) {
     .container { padding: 0 32px; }
     .solutions-grid { grid-template-columns: repeat(3, 1fr); }
     .footer-main { flex-direction: column; gap: 40px; }
     .nav-item a { padding: 7px 14px; font-size: 0.9rem; }
     .header-cta { padding: 8px 18px; font-size: 0.82rem; }
     .header-inner { gap: 12px; }
}

@media (max-width: 1024px) {
    .about-grid { grid-template-columns: 1fr; gap: 48px; }
    .about-image img { height: 360px; }
    .products-showcase { grid-template-columns: 1fr; }
    .why-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: 1fr; }
    .news-featured { height: auto; }
    .news-card--featured { flex-direction: column; }
    .news-card--featured .news-card-image { width: 100%; min-height: 240px; }
    .news-card--featured .news-card-content { width: 100%; padding: 28px; }
    .news-card--featured .news-card-title { font-size: 1.1rem; }
    .news-card--featured .news-card-excerpt { -webkit-line-clamp: 3; }
}

@media (max-width: 768px) {
    :root { --header-height: 68px; }
    .container { padding: 0 20px; }
    
    .nav {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--bg-white);
        transform: translateX(100%);
        transition: transform var(--duration-base) var(--ease-smooth);
        z-index: 999;
        padding: 100px 32px 32px;
    }
    
    .nav.open { transform: translateX(0); }
    
    .nav-list {
        flex-direction: column;
        gap: 8px;
    }
    
    .nav-item a {
        padding: 16px 20px;
        font-size: 1.1rem;
        border-radius: var(--radius-md);
        color: var(--text-heading);
    }
    
    .nav-item a:hover {
        background: var(--green-50);
        color: var(--accent-green);
    }
    
    .nav-item--active a {
        background: var(--accent-green);
        color: var(--text-white);
    }

    .nav-dropdown {
        position: static;
        transform: none;
        box-shadow: none;
        border: none;
        background: var(--green-50);
        border-radius: var(--radius-md);
        margin: 4px 0;
        opacity: 1;
        visibility: visible;
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--duration-base) var(--ease-smooth);
        padding: 0;
    }

    .nav-dropdown::before {
        display: none;
    }

    .nav-item--has-dropdown.open .nav-dropdown {
        max-height: 500px;
        padding: 8px;
    }

    .nav-item--has-dropdown.open > a svg {
        transform: rotate(180deg);
    }

    .nav-dropdown li a {
        padding: 12px 16px 12px 32px;
        font-size: 0.95rem;
        color: var(--text-body);
    }

    .nav-dropdown li a:hover {
        background: var(--green-100);
        color: var(--accent-green);
    }
    
    .header-cta { display: none; }
    .mobile-menu-btn { display: flex; }
    
    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
        background: var(--text-heading);
    }
    .mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
        background: var(--text-heading);
    }
    
    .hero { min-height: 100svh; }
    .hero-content { padding: 120px 0 80px; }
    .hero-stats { gap: 32px; flex-wrap: wrap; }
    
    .section { padding: 80px 0; }
    .section-header { margin-bottom: 48px; }
    
    .solutions-grid { grid-template-columns: repeat(2, 1fr); }
    .why-grid { grid-template-columns: 1fr; }
    
     .footer-main { flex-direction: column; align-items: center; text-align: center; gap: 36px; }
     .footer-info-row { justify-content: center; }
    .footer-bottom-inner { flex-direction: column; gap: 16px; text-align: center; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 2.2rem; }
    .hero-actions { flex-direction: column; align-items: flex-start; }
    .btn { width: 100%; justify-content: center; }
    .solutions-grid { grid-template-columns: 1fr; }
    .about-features { grid-template-columns: 1fr; }
    .cta-actions { flex-direction: column; }
}