/* ===== CSS Variables ===== */
:root {
    --primary: #1a4d2e;
    --primary-light: #2d6a4f;
    --primary-dark: #0f2f1c;
    --secondary: #0d7377;
    --secondary-light: #14919b;
    --accent: #d4a853;
    --accent-light: #e8c77a;
    --text-primary: #1a1a2e;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --text-light: #a0aec0;
    --bg-primary: #ffffff;
    --bg-secondary: #f8faf9;
    --bg-tertiary: #f0f4f2;
    --bg-dark: #0f2f1c;
    --border: #e2e8e4;
    --border-light: #edf2ef;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.12);
    --shadow-2xl: 0 25px 60px rgba(0, 0, 0, 0.15);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Typography Scale - 模块化字号阶梯 */
    --font-serif: 'Noto Serif SC', 'Songti SC', SimSun, serif;
    --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', monospace;
    
    /* Font sizes - 1.25 比例 (Major Third) */
    --fs-xs: 12px;
    --fs-sm: 13px;
    --fs-base: 15px;
    --fs-md: 16px;
    --fs-lg: 18px;
    --fs-xl: 20px;
    --fs-2xl: 24px;
    --fs-3xl: 28px;
    --fs-4xl: 32px;
    --fs-5xl: 42px;
    --fs-6xl: 56px;
    --fs-hero: 64px;
    
    /* Line heights */
    --lh-tight: 1.2;
    --lh-snug: 1.4;
    --lh-normal: 1.6;
    --lh-relaxed: 1.8;
    
    /* Font weights */
    --fw-light: 300;
    --fw-regular: 400;
    --fw-medium: 500;
    --fw-semibold: 600;
    --fw-bold: 700;
    --fw-black: 900;
    
    /* Letter spacing */
    --ls-tight: -0.02em;
    --ls-normal: 0;
    --ls-wide: 0.02em;
    --ls-wider: 0.05em;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    font-size: var(--fs-base);
    font-weight: var(--fw-regular);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: var(--lh-relaxed);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    font-feature-settings: "kern" 1, "palt" 1;
}

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

ul {
    list-style: none;
}

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

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

select {
    font-family: inherit;
    cursor: pointer;
}

/* ===== Container ===== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 32px;
}

/* ===== Section ===== */
.section {
    padding: 100px 0;
    position: relative;
}

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

.section-tag {
    display: inline-block;
    font-size: var(--fs-xs);
    font-weight: var(--fw-medium);
    letter-spacing: var(--ls-wider);
    color: var(--secondary);
    text-transform: uppercase;
    margin-bottom: 16px;
    position: relative;
    padding: 0 24px;
}

.section-tag::before,
.section-tag::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 16px;
    height: 1px;
    background: var(--secondary);
    opacity: 0.5;
}

.section-tag::before {
    left: 0;
}

.section-tag::after {
    right: 0;
}

.section-title {
    font-family: var(--font-serif);
    font-size: var(--fs-5xl);
    font-weight: var(--fw-bold);
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: var(--ls-tight);
    line-height: var(--lh-tight);
}

.section-subtitle {
    font-size: var(--fs-md);
    color: var(--text-secondary);
    max-width: 640px;
    margin: 0 auto;
    line-height: var(--lh-relaxed);
    font-weight: var(--fw-regular);
}

.section-header.light .section-tag {
    color: var(--accent);
}

.section-header.light .section-tag::before,
.section-header.light .section-tag::after {
    background: var(--accent);
}

.section-header.light .section-title {
    color: #ffffff;
}

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

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(26, 77, 46, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(26, 77, 46, 0.4);
}

.btn-primary .btn-arrow {
    width: 18px;
    height: 18px;
    transition: var(--transition);
}

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

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1.5px solid var(--primary);
}

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

.btn-full {
    width: 100%;
}

/* Button ripple effect */
.btn-ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    transform: scale(0);
    animation: ripple-animation 0.6s ease-out;
    pointer-events: none;
}

.btn-outline .btn-ripple {
    background: rgba(26, 77, 46, 0.15);
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* Button active state */
.btn:active {
    transform: scale(0.97);
}

.btn-primary:active {
    transform: translateY(0) scale(0.97);
    box-shadow: 0 2px 8px rgba(26, 77, 46, 0.25);
}

.btn-outline:active {
    transform: translateY(0) scale(0.97);
}

/* ===== Skip Link (Accessibility) ===== */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: #ffffff;
    padding: 12px 24px;
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    z-index: 10000;
    transition: top 0.3s ease;
    text-decoration: none;
}

.skip-link:focus {
    top: 0;
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 14px 0;
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease, background 0.3s ease, padding 0.3s ease, box-shadow 0.3s ease;
}

.navbar.nav-hidden {
    transform: translateY(-100%);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.logo-mark {
    width: 40px;
    height: 40px;
    color: #ffffff;
    transition: var(--transition);
}

.navbar.scrolled .logo-mark {
    color: var(--primary);
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-cn {
    font-family: var(--font-serif);
    font-size: 18px;
    font-weight: 700;
    color: #ffffff;
}

.logo-en {
    font-size: 10px;
    letter-spacing: 2px;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
}

.navbar.scrolled .logo-cn {
    color: var(--text-primary);
}

.navbar.scrolled .logo-en {
    color: var(--text-muted);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    position: relative;
    padding: 8px 14px;
    font-size: 14px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    transition: var(--transition);
}

.navbar.scrolled .nav-link {
    color: var(--text-secondary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
    border-radius: 2px;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 20px;
}

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

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

.navbar.scrolled .nav-link::after {
    background: var(--primary);
}

.nav-contact {
    background: var(--accent);
    color: var(--primary-dark) !important;
    border-radius: var(--radius-sm);
    padding: 8px 20px !important;
    font-weight: 600 !important;
    margin-left: 8px;
}

.nav-contact:hover {
    background: var(--accent-light);
    color: var(--primary-dark) !important;
    transform: translateY(-1px);
}

.nav-contact::after {
    display: none !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: #ffffff;
    transition: var(--transition);
    border-radius: 2px;
}

.navbar.scrolled .nav-toggle span {
    background: var(--text-primary);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    color: #ffffff;
}

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

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

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, 
        rgba(15, 47, 28, 0.85) 0%, 
        rgba(26, 77, 46, 0.7) 50%, 
        rgba(13, 115, 119, 0.75) 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
}

.hero-pattern {
    position: absolute;
    inset: 0;
    color: rgba(255, 255, 255, 0.3);
    opacity: 0.3;
}

.floating-elements {
    position: absolute;
    inset: 0;
    color: rgba(212, 168, 83, 0.4);
}

.float-element {
    position: absolute;
    animation: float 6s ease-in-out infinite;
}

.elem-1 {
    top: 15%;
    right: 10%;
    width: 120px;
    height: 120px;
    animation-delay: 0s;
}

.elem-2 {
    bottom: 20%;
    left: 8%;
    width: 150px;
    height: 150px;
    animation-delay: 2s;
}

.elem-3 {
    top: 60%;
    right: 20%;
    width: 80px;
    height: 80px;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 900px;
    padding: 0 32px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    font-size: var(--fs-sm);
    margin-bottom: 32px;
    backdrop-filter: blur(10px);
    letter-spacing: var(--ls-wide);
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.2);
    }
}

.hero-title {
    font-family: var(--font-serif);
    font-size: var(--fs-hero);
    font-weight: var(--fw-bold);
    line-height: var(--lh-tight);
    margin-bottom: 24px;
    letter-spacing: var(--ls-tight);
}

.title-line {
    display: block;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

.title-line:first-child {
    animation-delay: 0.2s;
}

.title-line.accent {
    color: var(--accent);
    animation-delay: 0.4s;
}

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

.hero-subtitle {
    font-size: var(--fs-lg);
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 48px;
    line-height: var(--lh-relaxed);
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.6s forwards;
    font-weight: var(--fw-light);
    letter-spacing: var(--ls-wide);
}

.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0;
    margin-bottom: 48px;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.8s forwards;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 32px;
}

.stat-number {
    font-family: var(--font-serif);
    font-size: 48px;
    font-weight: var(--fw-bold);
    color: var(--accent);
    line-height: 1;
    letter-spacing: -0.03em;
}

.stat-suffix {
    font-size: var(--fs-lg);
    color: var(--accent);
    margin-top: 4px;
    font-weight: var(--fw-medium);
}

.stat-label {
    font-size: var(--fs-xs);
    color: rgba(255, 255, 255, 0.7);
    margin-top: 8px;
    letter-spacing: var(--ls-wide);
}

.stat-divider {
    width: 1px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
}

/* ===== Hero Badges ===== */
.hero-badges {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 36px;
}

.hero-badge-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 50px;
    font-size: var(--fs-sm);
    color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: var(--transition);
}

.hero-badge-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.hero-badge-icon {
    color: var(--accent);
    font-weight: var(--fw-bold);
    font-size: var(--fs-sm);
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: 16px;
    opacity: 0;
    animation: fadeInUp 0.8s ease 1s forwards;
}

.hero-cta .btn-outline {
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.4);
}

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

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: rgba(255, 255, 255, 0.6);
    font-size: 12px;
    letter-spacing: 2px;
    z-index: 10;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, transparent, rgba(255, 255, 255, 0.5));
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0%, 100% {
        transform: scaleY(1);
        transform-origin: top;
    }
    50% {
        transform: scaleY(0.5);
        transform-origin: top;
    }
}

/* ===== Trust Bar ===== */
.trust-bar {
    background: #ffffff;
    padding: 32px 0;
    border-bottom: 1px solid var(--border-light);
    position: relative;
    z-index: 10;
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 24px;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.trust-item:hover {
    background: var(--bg-secondary);
    transform: translateY(-2px);
}

.trust-icon {
    font-size: 28px;
    flex-shrink: 0;
}

.trust-text h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

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

/* ===== Clients / Partners Section ===== */
.clients-section {
    padding: 40px 0 48px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-light);
}

.clients-title {
    text-align: center;
    font-size: var(--fs-sm);
    color: var(--text-muted);
    margin-bottom: 24px;
    letter-spacing: var(--ls-wide);
    font-weight: var(--fw-medium);
}

.clients-logos {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
    align-items: center;
}

.client-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: default;
    gap: 6px;
}

.client-logo:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.client-logo-text {
    font-family: var(--font-serif);
    font-size: var(--fs-md);
    font-weight: var(--fw-semibold);
    color: var(--text-primary);
    letter-spacing: var(--ls-wide);
}

.client-logo-type {
    font-size: var(--fs-xs);
    color: var(--text-muted);
    letter-spacing: var(--ls-wide);
}

/* ===== About ===== */
.about {
    background: var(--bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    margin-bottom: 80px;
}

.about-images {
    position: relative;
}

.about-img-main {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about-img-main img {
    width: 100%;
    height: 420px;
    object-fit: cover;
    transition: var(--transition-slow);
}

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

.img-badge {
    position: absolute;
    bottom: 24px;
    left: 24px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #ffffff;
    padding: 16px 24px;
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: var(--shadow-lg);
}

.badge-number {
    font-family: var(--font-serif);
    font-size: 36px;
    font-weight: 700;
    line-height: 1;
}

.badge-text {
    font-size: 13px;
    opacity: 0.9;
    margin-top: 4px;
}

.about-img-sub {
    position: absolute;
    right: -30px;
    bottom: -30px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.sub-card {
    background: #ffffff;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition);
}

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

.sub-icon {
    font-size: 24px;
}

.sub-card h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

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

.about-heading {
    font-family: var(--font-serif);
    font-size: var(--fs-3xl);
    font-weight: var(--fw-bold);
    color: var(--text-primary);
    line-height: var(--lh-snug);
    margin-bottom: 24px;
    letter-spacing: -0.01em;
}

.accent-text {
    color: var(--primary);
    position: relative;
    display: inline-block;
}

.accent-text::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 0;
    right: 0;
    height: 8px;
    background: rgba(212, 168, 83, 0.25);
    z-index: -1;
    border-radius: 4px;
}

.about-intro .lead {
    font-size: var(--fs-md);
    color: var(--text-primary);
    margin-bottom: 16px;
    line-height: var(--lh-relaxed);
    font-weight: var(--fw-medium);
}

.about-intro p {
    color: var(--text-secondary);
    margin-bottom: 14px;
    line-height: var(--lh-relaxed);
    font-size: var(--fs-base);
}

.about-intro strong {
    color: var(--primary);
    font-weight: var(--fw-semibold);
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 32px;
}

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

.feature-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #ffffff;
    border-radius: var(--radius-md);
    transition: var(--transition-slow);
}

.feature-item:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-icon svg {
    width: 22px;
    height: 22px;
}

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

.feature-info p {
    font-size: 14px;
    color: var(--text-muted);
}

/* Position Cards */
.position-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.pos-card {
    background: #ffffff;
    padding: 28px 24px;
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--border-light);
    transition: var(--transition-slow);
    position: relative;
    overflow: hidden;
}

.pos-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-slow);
}

.pos-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

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

.pos-card.highlight {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: #ffffff;
    border-color: transparent;
}

.pos-card.highlight h4,
.pos-card.highlight p {
    color: #ffffff;
}

.pos-card.highlight .pos-num {
    color: rgba(255, 255, 255, 0.3);
}

.pos-num {
    font-family: var(--font-serif);
    font-size: 42px;
    font-weight: 700;
    color: rgba(26, 77, 46, 0.1);
    line-height: 1;
    margin-bottom: 12px;
}

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

.pos-card p {
    font-size: 14px;
    color: var(--text-muted);
}

/* ===== Business Segments ===== */
.business-segments {
    background: var(--bg-primary);
}

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

.segment-card {
    position: relative;
    background: #ffffff;
    border-radius: var(--radius-xl);
    padding: 48px 40px;
    border: 1px solid var(--border-light);
    transition: var(--transition-slow);
    overflow: hidden;
}

.segment-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.segment-card.gov::before {
    background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.segment-card.agri::before {
    background: linear-gradient(90deg, var(--secondary), var(--accent));
}

.segment-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
    border-color: transparent;
}

.segment-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    transition: var(--transition-slow);
}

.segment-card.gov .segment-icon {
    background: linear-gradient(135deg, rgba(26, 77, 46, 0.1), rgba(13, 115, 119, 0.1));
    color: var(--primary);
}

.segment-card.agri .segment-icon {
    background: linear-gradient(135deg, rgba(13, 115, 119, 0.1), rgba(212, 168, 83, 0.1));
    color: var(--secondary);
}

.segment-card:hover .segment-icon {
    transform: scale(1.1) rotate(-5deg);
}

.segment-icon svg {
    width: 44px;
    height: 44px;
}

.segment-badge {
    display: inline-block;
    padding: 4px 14px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    background: var(--bg-secondary);
    border-radius: 50px;
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.segment-title {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.segment-subtitle {
    font-size: 13px;
    color: var(--text-muted);
    letter-spacing: 1px;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.segment-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 28px;
}

.segment-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 32px;
}

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

.segment-list li span {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #ffffff;
    border-radius: 50%;
    font-size: 11px;
    font-weight: 700;
}

.segment-stats {
    display: flex;
    gap: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border-light);
}

.seg-stat {
    display: flex;
    flex-direction: column;
}

.seg-num {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.2;
}

.segment-card.agri .seg-num {
    color: var(--secondary);
}

.seg-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ===== Services ===== */
.services {
    background: var(--bg-primary);
}

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

.service-card {
    position: relative;
    background: #ffffff;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-slow);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-2xl);
    border-color: transparent;
}

.service-image {
    height: 140px;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
    position: relative;
    overflow: hidden;
}

.service-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(255,255,255,0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(212,168,83,0.2) 0%, transparent 40%);
}

.service-img-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-category {
    padding: 6px 16px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50px;
    color: #ffffff;
    font-size: 13px;
    font-weight: 500;
}

.service-icon {
    position: relative;
    margin: -32px 24px 0;
    z-index: 2;
}

.icon-shape {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #ffffff;
    color: var(--primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    border: 2px solid #ffffff;
    transition: var(--transition-slow);
}

.service-card:hover .icon-shape {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #ffffff;
    transform: rotate(5deg) scale(1.1);
}

.icon-shape svg {
    width: 30px;
    height: 30px;
}

.service-number {
    position: absolute;
    top: 16px;
    right: 24px;
    font-family: var(--font-serif);
    font-size: 48px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.2);
    line-height: 1;
    z-index: 1;
}

.service-card .service-content {
    padding: 20px 24px 28px;
}

.service-title {
    font-size: var(--fs-xl);
    font-weight: var(--fw-semibold);
    color: var(--text-primary);
    margin: 16px 24px 12px;
    line-height: var(--lh-snug);
    letter-spacing: -0.01em;
}

.service-desc {
    font-size: var(--fs-sm);
    color: var(--text-secondary);
    line-height: var(--lh-relaxed);
    margin: 0 24px 16px;
}

.service-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 0 24px 28px;
}

.service-list li {
    position: relative;
    padding-left: 20px;
    font-size: var(--fs-sm);
    color: var(--text-muted);
    line-height: var(--lh-normal);
}

.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    background: var(--secondary);
    border-radius: 50%;
}

/* ===== Technology ===== */
.technology {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    color: #ffffff;
    position: relative;
    overflow: hidden;
}

.tech-bg {
    position: absolute;
    inset: 0;
}

.tech-grid-pattern {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    position: relative;
    z-index: 1;
}

.tech-card {
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-slow);
}

.tech-card:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(212, 168, 83, 0.4);
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.tech-image {
    height: 200px;
    overflow: hidden;
    position: relative;
}

.tech-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

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

.tech-content {
    padding: 28px;
}

.tech-badge {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 700;
    border-radius: 50px;
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.tech-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #ffffff;
}

.tech-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
    margin-bottom: 20px;
}

.tech-points {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.tech-points li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.85);
}

.point-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    background: var(--accent);
    border-radius: 50%;
    position: relative;
}

.point-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 7px;
    height: 7px;
    background: var(--primary-dark);
    border-radius: 50%;
}

/* ===== Products ===== */
.products {
    background: var(--bg-secondary);
}

.product-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 48px;
}

.product-tab {
    padding: 10px 22px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 50px;
    transition: var(--transition);
}

.product-tab:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-1px);
}

.product-tab.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #ffffff;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(26, 77, 46, 0.3);
}

.product-detail {
    position: relative;
    min-height: 500px;
}

.product-panel {
    display: none;
    animation: fadeIn 0.5s ease;
}

.product-panel.active {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    background: #ffffff;
    border-radius: var(--radius-xl);
    padding: 48px;
    box-shadow: var(--shadow-lg);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.product-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.product-image img {
    width: 100%;
    height: 380px;
    object-fit: cover;
    transition: var(--transition-slow);
}

.product-panel:hover .product-image img {
    transform: scale(1.03);
}

.product-image-badge {
    position: absolute;
    bottom: 20px;
    left: 20px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 12px 18px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: var(--shadow-md);
}

.product-image-badge span {
    font-size: 24px;
}

.product-image-badge p {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.product-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: var(--secondary);
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.product-name {
    font-family: var(--font-serif);
    font-size: var(--fs-3xl);
    font-weight: var(--fw-bold);
    color: var(--text-primary);
    margin-bottom: 16px;
    line-height: var(--lh-snug);
    letter-spacing: -0.01em;
}

.product-desc {
    font-size: var(--fs-base);
    color: var(--text-secondary);
    line-height: var(--lh-relaxed);
    margin-bottom: 28px;
}

.product-features h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 14px;
    position: relative;
    padding-left: 16px;
}

.product-features h4::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 18px;
    background: linear-gradient(180deg, var(--primary), var(--secondary));
    border-radius: 2px;
}

.feature-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 28px;
}

.feature-cell {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text-secondary);
}

.feature-dot {
    flex-shrink: 0;
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
}

.product-value {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    padding-top: 24px;
    border-top: 1px solid var(--border-light);
}

.value-item {
    text-align: center;
}

.value-number {
    display: block;
    font-family: var(--font-serif);
    font-size: var(--fs-2xl);
    font-weight: var(--fw-bold);
    color: var(--primary);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.value-label {
    display: block;
    font-size: var(--fs-xs);
    color: var(--text-muted);
    margin-top: 4px;
    letter-spacing: var(--ls-wide);
}

/* ===== Product Value Section ===== */
.product-value-section {
    padding: 60px 0;
    background: var(--bg-primary);
}

.value-banner {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: var(--radius-xl);
    padding: 48px 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    position: relative;
    overflow: hidden;
}

.value-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(212, 168, 83, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.value-banner-content h2 {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 8px;
}

.value-banner-content p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.8);
}

.value-banner-items {
    display: flex;
    gap: 32px;
}

.banner-item {
    display: flex;
    align-items: center;
    gap: 14px;
    color: #ffffff;
}

.banner-icon {
    font-size: 32px;
}

.banner-item h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 2px;
}

.banner-item p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.75);
}

/* ===== Advantages ===== */
.advantages {
    background: var(--bg-secondary);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.advantage-item {
    text-align: center;
    padding: 40px 28px;
    background: #ffffff;
    border-radius: var(--radius-lg);
    transition: var(--transition-slow);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-light);
}

.advantage-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transition: var(--transition-slow);
}

.advantage-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.advantage-item:hover::before {
    width: 100%;
}

.advantage-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #ffffff;
    border-radius: var(--radius-lg);
    transition: var(--transition-slow);
}

.advantage-item:hover .advantage-icon {
    transform: rotateY(180deg);
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
}

.advantage-icon svg {
    width: 36px;
    height: 36px;
}

.advantage-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 2px;
    margin-bottom: 8px;
}

.advantage-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.advantage-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.advantages-bottom {
    text-align: center;
}

.slogan {
    font-family: var(--font-serif);
    font-size: 20px;
    color: var(--text-muted);
    letter-spacing: 2px;
}

/* ===== Cases / Application Scenarios ===== */
.cases {
    background: var(--bg-primary);
}

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

.case-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    transition: var(--transition-slow);
    border: 1px solid transparent;
}

.case-card:hover {
    transform: translateY(-6px);
    background: #ffffff;
    box-shadow: var(--shadow-xl);
    border-color: var(--border-light);
}

.case-card.highlight {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: #ffffff;
}

.case-card.highlight h3,
.case-card.highlight p,
.case-card.highlight li {
    color: #ffffff;
}

.case-card.highlight .case-features li {
    color: rgba(255, 255, 255, 0.9);
}

.case-icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.case-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.case-card > p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.case-features {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.case-features li {
    font-size: 13px;
    color: var(--text-muted);
}

/* ===== Cooperation ===== */
.cooperation {
    background: var(--bg-secondary);
}

.cooperation-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.coop-card {
    position: relative;
    background: #ffffff;
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    border: 1px solid var(--border-light);
    transition: var(--transition-slow);
}

.coop-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.coop-card.featured {
    border-color: var(--primary);
    background: linear-gradient(180deg, #ffffff 0%, var(--bg-secondary) 100%);
}

.coop-number {
    font-family: var(--font-serif);
    font-size: 48px;
    font-weight: 700;
    color: var(--primary);
    opacity: 0.15;
    line-height: 1;
    margin-bottom: 16px;
}

.coop-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.coop-subtitle {
    font-size: 13px;
    color: var(--secondary);
    margin-bottom: 20px;
    font-weight: 500;
}

.coop-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 24px;
}

.coop-list li {
    position: relative;
    padding-left: 20px;
    font-size: 14px;
    color: var(--text-secondary);
}

.coop-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
    font-size: 12px;
}

.coop-price {
    padding-top: 20px;
    border-top: 1px dashed var(--border);
}

.price-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-right: 8px;
}

.price-text {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
}

.coop-badge {
    position: absolute;
    top: 28px;
    right: 24px;
    padding: 4px 12px;
    background: var(--accent);
    color: var(--primary-dark);
    font-size: 12px;
    font-weight: 600;
    border-radius: 50px;
}

.cooperation-footer {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid var(--border);
}

.coop-slogan {
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    letter-spacing: 2px;
}

.coop-slogan-sub {
    font-size: 15px;
    color: var(--text-muted);
}

/* ===== Vision ===== */
.vision {
    position: relative;
    padding: 120px 0;
    overflow: hidden;
    color: #ffffff;
}

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

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

.vision-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, 
        rgba(15, 47, 28, 0.9) 0%, 
        rgba(26, 77, 46, 0.85) 50%, 
        rgba(13, 115, 119, 0.8) 100%);
}

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

.vision-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 3px;
    color: var(--accent);
    margin-bottom: 16px;
    text-transform: uppercase;
}

.vision-title {
    font-family: var(--font-serif);
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 12px;
}

.vision-subtitle {
    font-size: 18px;
    color: var(--accent);
    letter-spacing: 4px;
    margin-bottom: 12px;
}

.vision-desc {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 60px;
}

.vision-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    max-width: 800px;
    margin: 0 auto;
}

.vision-item {
    text-align: center;
    transition: var(--transition-slow);
}

.vision-item:hover {
    transform: translateY(-8px);
}

.vision-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    color: var(--accent);
    transition: var(--transition-slow);
}

.vision-item:hover .vision-icon {
    background: rgba(212, 168, 83, 0.15);
    border-color: var(--accent);
    transform: scale(1.1);
}

.vision-icon svg {
    width: 36px;
    height: 36px;
}

.vision-item h4 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 8px;
}

.vision-item p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

/* ===== Contact ===== */
.contact {
    background: var(--bg-primary);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.contact-info {
    padding: 20px 0;
}

.contact-title {
    font-family: var(--font-serif);
    font-size: 42px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 16px 0 16px;
    line-height: 1.3;
}

.contact-desc {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.contact-highlights {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 40px;
    padding: 24px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 14px;
}

.highlight-icon {
    font-size: 24px;
}

.highlight-item h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.highlight-item p {
    font-size: 13px;
    color: var(--text-muted);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

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

.contact-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #ffffff;
    border-radius: var(--radius-md);
}

.contact-icon svg {
    width: 22px;
    height: 22px;
}

.contact-text h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.contact-text p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.contact-form-card {
    background: #ffffff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: 48px 40px;
}

.contact-form h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

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

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

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    font-size: 14px;
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1.5px solid transparent;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    outline: none;
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--primary);
    background: #ffffff;
    box-shadow: 0 0 0 4px rgba(26, 77, 46, 0.1);
}

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

.form-tip {
    text-align: center;
    font-size: var(--fs-xs);
    color: var(--text-light);
    margin-top: 16px;
}

/* Form validation styles */
.form-group {
    position: relative;
}

.form-group.error input,
.form-group.error textarea,
.form-group.error select {
    border-color: #e53e3e;
    background: #fff5f5;
}

.form-group.error input:focus,
.form-group.error textarea:focus,
.form-group.error select:focus {
    border-color: #e53e3e;
    box-shadow: 0 0 0 3px rgba(229, 62, 62, 0.1);
}

.form-group.success input,
.form-group.success textarea,
.form-group.success select {
    border-color: #38a169;
}

.error-message {
    display: none;
    color: #e53e3e;
    font-size: var(--fs-xs);
    margin-top: 6px;
    line-height: 1.5;
}

.form-group.error .error-message {
    display: block;
    animation: errorShake 0.3s ease;
}

@keyframes errorShake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    75% { transform: translateX(4px); }
}

.form-success-message {
    display: none;
    text-align: center;
    padding: 16px;
    background: #f0fff4;
    border: 1px solid #9ae6b4;
    border-radius: var(--radius-md);
    color: #22543d;
    font-size: var(--fs-sm);
    margin-bottom: 16px;
}

.form-success-message.show {
    display: block;
    animation: successPop 0.4s ease;
}

@keyframes successPop {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 60px 0 24px;
}

.footer-top {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 60px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    color: #ffffff;
}

.footer-logo .logo-cn {
    color: #ffffff;
}

.footer-logo .logo-en {
    color: rgba(255, 255, 255, 0.5);
}

.footer-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 12px;
}

.footer-slogan {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.35);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

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

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

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

.footer-col a:hover {
    color: var(--accent);
    padding-left: 4px;
}

.footer-bottom {
    padding-top: 24px;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}

.footer-bottom p:first-child {
    margin-bottom: 4px;
}

/* ===== Back to Top ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #ffffff;
    border-radius: 50%;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}

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

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(26, 77, 46, 0.4);
}

.back-to-top svg {
    width: 20px;
    height: 20px;
}

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

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

/* ===== Image Fade-in on Load ===== */
img {
    opacity: 0;
    transition: opacity 0.5s ease;
}

img.loaded {
    opacity: 1;
}

/* Picture element responsive */
picture {
    display: block;
    width: 100%;
    height: 100%;
}

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

/* Aspect ratio boxes - prevent CLS */
.hero-bg-image {
    aspect-ratio: 16 / 9;
}

.about-img-main {
    aspect-ratio: 4 / 3;
}

.tech-image {
    aspect-ratio: 16 / 10;
}

.product-image {
    aspect-ratio: 16 / 10;
}

.vision-bg-image {
    aspect-ratio: 21 / 9;
}

/* Image placeholder / skeleton */
.hero-bg-image,
.about-img-main,
.tech-image,
.product-image,
.vision-bg-image {
    background: linear-gradient(90deg, var(--bg-secondary) 25%, var(--bg-tertiary) 50%, var(--bg-secondary) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ===== Reduced Motion Support ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .float-element {
        animation: none !important;
    }
    
    .badge-dot {
        animation: none !important;
    }
    
    .scroll-line {
        animation: none !important;
    }
    
    .hero-title .title-line,
    .hero-subtitle,
    .hero-stats,
    .hero-cta {
        animation: none !important;
        opacity: 1 !important;
        transform: none !important;
    }
    
    .service-card,
    .tech-card,
    .advantage-item,
    .coop-card,
    .vision-item,
    .position-item,
    .feature-item,
    .segment-card,
    .case-card,
    .pos-card {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }
    
    img {
        opacity: 1 !important;
        transition: none !important;
    }
    
    .hero-bg-image,
    .about-img-main,
    .tech-image,
    .product-image,
    .vision-bg-image {
        animation: none !important;
    }
}

/* ===== Lightbox ===== */
.lightbox {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.92);
    z-index: 2000;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    padding: 40px 60px;
    backdrop-filter: blur(8px);
}

.lightbox.active {
    display: flex;
    animation: lightboxFadeIn 0.3s ease;
}

@keyframes lightboxFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.lightbox-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 100%;
    max-height: 100%;
    animation: lightboxScaleIn 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes lightboxScaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.lightbox-picture {
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 90vw;
    max-height: 75vh;
}

.lightbox-image {
    max-width: 100%;
    max-height: 75vh;
    object-fit: contain;
    border-radius: var(--radius-lg);
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.5);
    opacity: 1 !important;
}

.lightbox-caption {
    color: rgba(255, 255, 255, 0.9);
    margin-top: 20px;
    font-size: var(--fs-md);
    text-align: center;
    max-width: 600px;
    line-height: var(--lh-normal);
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #ffffff;
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.lightbox-close {
    top: 24px;
    right: 24px;
    width: 48px;
    height: 48px;
    font-size: 28px;
    line-height: 1;
}

.lightbox-prev,
.lightbox-next {
    top: 50%;
    transform: translateY(-50%);
    width: 52px;
    height: 52px;
    font-size: 20px;
}

.lightbox-prev {
    left: 24px;
}

.lightbox-next {
    right: 24px;
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    background: var(--accent);
    border-color: var(--accent);
    transform: scale(1.1);
}

.lightbox-prev:hover {
    transform: translateY(-50%) scale(1.1);
}

.lightbox-next:hover {
    transform: translateY(-50%) scale(1.1);
}

/* Clickable images cursor */
.product-image,
.tech-image,
.about-img-main {
    cursor: zoom-in;
}

/* ===== Mobile Bottom Navigation ===== */
.mobile-bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--border-light);
    padding: 8px 8px calc(8px + env(safe-area-inset-bottom));
    z-index: 999;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06);
}

.mobile-bottom-nav a {
    text-decoration: none;
}

.mobile-bottom-nav {
    display: none;
}

@media (max-width: 768px) {
    .mobile-bottom-nav {
        display: flex;
        justify-content: space-around;
        align-items: center;
    }

    body {
        padding-bottom: 70px;
    }
}

.mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    color: var(--text-muted);
    font-size: 11px;
    flex: 1;
}

.mobile-nav-icon {
    font-size: 22px;
    line-height: 1;
    transition: var(--transition);
}

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

.mobile-nav-item:hover .mobile-nav-icon,
.mobile-nav-item.active .mobile-nav-icon {
    transform: scale(1.1);
}

.mobile-nav-cta {
    color: var(--accent) !important;
}

.mobile-nav-cta .mobile-nav-icon {
    font-size: 24px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .section {
        padding: 80px 0;
    }

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

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

    .services-grid,
    .advantages-grid,
    .cooperation-grid,
    .cases-grid,
    .position-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .segments-grid {
        grid-template-columns: 1fr;
        max-width: 560px;
        margin: 0 auto;
    }

    .tech-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    .about-content,
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .about-img-sub {
        right: 0;
        bottom: -40px;
    }

    .product-panel.active {
        grid-template-columns: 1fr;
        gap: 32px;
        padding: 32px;
    }

    .value-banner {
        flex-direction: column;
        text-align: center;
        padding: 40px 32px;
    }

    .value-banner-items {
        flex-direction: column;
        gap: 20px;
    }

    .hero-title {
        font-size: 48px;
    }

    .nav-menu {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #ffffff;
        padding: 20px;
        box-shadow: var(--shadow-lg);
        gap: 4px;
    }

    .navbar .nav-link {
        color: var(--text-secondary);
    }

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

@media (max-width: 768px) {
    .container,
    .nav-container {
        padding: 0 20px;
    }

    .section {
        padding: 60px 0;
    }

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

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

    .section-subtitle {
        font-size: 15px;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 15px;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 24px;
        justify-content: center;
    }

    .stat-divider {
        display: none;
    }

    .stat-item {
        padding: 0 16px;
        flex: 0 0 calc(50% - 24px);
    }

    .stat-number {
        font-size: 36px;
    }

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

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

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

    .services-grid,
    .advantages-grid,
    .cooperation-grid,
    .cases-grid,
    .position-cards {
        grid-template-columns: 1fr;
    }

    .about-img-main img {
        height: 320px;
    }

    .about-img-sub {
        position: static;
        flex-direction: row;
        margin-top: 20px;
        gap: 12px;
    }

    .sub-card {
        flex: 1;
    }

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

    .product-tabs {
        gap: 6px;
    }

    .product-tab {
        padding: 8px 14px;
        font-size: 13px;
    }

    .product-panel.active {
        padding: 24px;
    }

    .product-image img {
        height: 260px;
    }

    .product-name {
        font-size: 24px;
    }

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

    .value-number {
        font-size: 18px;
    }

    .value-label {
        font-size: 11px;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .contact-form-card {
        padding: 32px 24px;
    }

    .vision-grid {
        grid-template-columns: 1fr;
        gap: 32px;
        max-width: 280px;
    }

    .vision-title {
        font-size: 32px;
    }

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

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 42px;
        height: 42px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }

    .section-title {
        font-size: 24px;
    }

    .vision-title,
    .contact-title {
        font-size: 28px;
    }

    .trust-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .trust-item {
        padding: 10px 12px;
    }

    .trust-icon {
        font-size: 22px;
    }

    .trust-text h4 {
        font-size: 13px;
    }

    .trust-text p {
        font-size: 11px;
    }

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

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

    .value-banner-content h2 {
        font-size: 22px;
    }

    .product-value {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .clients-logos {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }

    .client-logo {
        padding: 14px 8px;
    }

    .client-logo-text {
        font-size: var(--fs-sm);
    }

    .client-logo-type {
        font-size: 10px;
    }
}

/* Extra small screens */
@media (max-width: 360px) {
    .container {
        padding: 0 16px;
    }

    .section {
        padding: 60px 0;
    }

    .hero-title {
        font-size: 24px;
    }

    .hero-subtitle {
        font-size: var(--fs-base);
    }

    .section-title {
        font-size: 22px;
    }

    .section-subtitle {
        font-size: var(--fs-base);
    }

    .hero-stats {
        gap: 16px;
    }

    .stat-number {
        font-size: 28px;
    }

    .btn {
        padding: 12px 24px;
        font-size: var(--fs-sm);
    }

    .mobile-nav-item {
        padding: 4px 8px;
        font-size: 10px;
    }

    .mobile-nav-icon {
        font-size: 20px;
    }
}