/* ========================================
   智云科技 — 企业官网样式
   ======================================== */

:root {
    --color-bg: #ffffff;
    --color-bg-secondary: #f8f8f8;
    --color-bg-tertiary: #f0f0f0;
    --color-accent: #b89650;
    --color-accent-light: #d4b578;
    --color-text-primary: #1a1a1a;
    --color-text-secondary: #666666;
    --color-text-tertiary: #999999;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-serif: 'Playfair Display', Georgia, serif;
    --transition-base: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

/* Loader */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loader-line {
    width: 200px;
    height: 1px;
    background: var(--color-bg-tertiary);
    position: relative;
    overflow: hidden;
}

.loader-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 40%;
    height: 100%;
    background: var(--color-accent);
    animation: loading 1.5s ease-in-out infinite;
}

@keyframes loading {
    0% { left: -40%; }
    100% { left: 100%; }
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: var(--spacing-lg) var(--spacing-xl);
    z-index: 1000;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    padding: var(--spacing-sm) var(--spacing-xl);
    box-shadow: 0 1px 10px rgba(0,0,0,0.05);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.logo img {
    height: 35px;
    width: auto;
}

.logo-text {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text-primary);
    letter-spacing: 0.15em;
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.813rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: color 0.3s ease;
}

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

.nav-link span {
    color: var(--color-text-tertiary);
    margin-right: 0.5rem;
}

.lang-switch {
    margin-left: var(--spacing-lg);
    padding-left: var(--spacing-lg);
    border-left: 1px solid var(--color-bg-tertiary);
}

.lang-btn {
    background: none;
    border: 1px solid var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
}

.menu-toggle span {
    width: 24px;
    height: 1px;
    background: var(--color-text-primary);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.parallax-shape {
    position: absolute;
    will-change: transform;
}

.shape-1 {
    width: 150px;
    height: 150px;
    border: 1px solid var(--color-accent);
    top: 20%;
    left: 10%;
}

.shape-2 {
    width: 100px;
    height: 100px;
    border: 2px solid var(--color-text-tertiary);
    border-radius: 50%;
    bottom: 25%;
    right: 15%;
}

.shape-3 {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-accent) 0%, transparent 100%);
    opacity: 0.25;
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
    top: 55%;
    left: 20%;
}

.particle {
    position: absolute;
    border-radius: 50%;
    background: var(--color-accent);
    opacity: 0.12;
    will-change: transform;
}

.particle-1 {
    width: 6px;
    height: 6px;
    top: 25%;
    left: 35%;
}

.particle-2 {
    width: 4px;
    height: 4px;
    top: 60%;
    right: 25%;
}

.particle-3 {
    width: 5px;
    height: 5px;
    bottom: 30%;
    left: 45%;
}

.hero-foreground-text {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

.fg-text {
    position: absolute;
    font-size: clamp(8rem, 25vw, 30rem);
    font-weight: 100;
    color: var(--color-bg-tertiary);
    opacity: 0.35;
    white-space: nowrap;
    letter-spacing: 0.1em;
    will-change: transform;
}

.fg-text:nth-child(1) {
    top: 8%;
    left: -2%;
    transform: rotate(-8deg);
}

.fg-text:nth-child(2) {
    bottom: 15%;
    right: -5%;
    transform: rotate(5deg);
}

.fg-text:nth-child(3) {
    top: 45%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-3deg);
    font-size: clamp(6rem, 18vw, 20rem);
}

.hero-accent {
    position: absolute;
    font-size: 0.625rem;
    color: var(--color-text-tertiary);
    letter-spacing: 0.3em;
    text-transform: uppercase;
    writing-mode: vertical-rl;
    will-change: transform;
}

.hero-accent-left {
    left: var(--spacing-xl);
    top: 50%;
    transform: translateY(-50%);
}

.hero-accent-right {
    right: var(--spacing-xl);
    top: 50%;
    transform: translateY(-50%) rotate(180deg);
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(201, 218, 240, 0.4) 0%, transparent 70%);
    top: -200px;
    left: -200px;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(184, 150, 80, 0.2) 0%, transparent 70%);
    top: 50%;
    right: -150px;
}

.orb-3 {
    width: 550px;
    height: 550px;
    background: radial-gradient(circle, rgba(200, 230, 216, 0.3) 0%, transparent 70%);
    bottom: -200px;
    left: 20%;
}

.hero-content {
    max-width: 1000px;
}

.hero-subtitle {
    font-size: 0.813rem;
    color: var(--color-text-secondary);
    letter-spacing: 0.3em;
    text-transform: uppercase;
    margin-bottom: var(--spacing-md);
}

.hero-title {
    font-size: clamp(4rem, 12vw, 10rem);
    font-weight: 100;
    line-height: 1;
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-lg);
    display: flex;
    flex-direction: column;
}

.hero-title .line {
    display: block;
}

.hero-title .line-offset {
    margin-left: var(--spacing-lg);
}

.hero-title .line-emphasis {
    color: var(--color-accent);
}

.hero-description {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.hero-cta {
    margin-top: var(--spacing-md);
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: transparent;
    border: 1px solid var(--color-text-tertiary);
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: 0.813rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: all 0.4s ease;
    cursor: pointer;
}

.cta-button:hover {
    border-color: var(--color-accent);
    background: var(--color-accent);
    color: #fff;
}

.cta-button-outline {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    opacity: 0.5;
}

.mouse {
    width: 20px;
    height: 32px;
    border: 1px solid var(--color-text-tertiary);
    border-radius: 10px;
    position: relative;
}

.wheel {
    width: 2px;
    height: 5px;
    background: var(--color-text-tertiary);
    border-radius: 1px;
    position: absolute;
    top: 5px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s ease infinite;
}

@keyframes scroll {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(10px); }
}

.scroll-indicator p {
    font-size: 0.625rem;
    color: var(--color-text-secondary);
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

/* Section Styles */
section {
    padding: var(--spacing-xl) var(--spacing-xl);
}

.section-label {
    font-size: 0.688rem;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.25em;
    margin-bottom: var(--spacing-sm);
}

.section-header-asymmetric {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 100;
    line-height: 1.1;
}

.header-description {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    text-align: right;
}

/* Work Section */
.work {
    background: var(--color-bg-secondary);
}

.projects-asymmetric {
    max-width: 1400px;
    margin: 0 auto;
}

.project-hero-item {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    margin-bottom: var(--spacing-xl);
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.project-reverse {
    grid-template-columns: 1fr 1.2fr;
    direction: rtl;
}

.project-reverse > * {
    direction: ltr;
}

.project-image-wrapper {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/10;
}

.project-hero-item .project-image-wrapper {
    aspect-ratio: 16/9;
}

.placeholder-image {
    width: 100%;
    height: 100%;
    transition: transform 0.8s ease;
    display: block;
}

.placeholder-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.project-image-wrapper:hover .placeholder-image {
    transform: scale(1.05);
}

.project-item {
    background: var(--color-bg);
    overflow: hidden;
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.project-item:hover,
.project-hero-item:hover {
    transform: translateY(-8px);
}

.project-item:hover img,
.project-hero-item:hover img {
    transform: scale(1.08);
}

.gradient-1 { background: linear-gradient(135deg, #e8e4e0 0%, #d4cfc9 100%); }
.gradient-2 { background: linear-gradient(135deg, #c9daf0 0%, #a8c5e0 100%); }
.gradient-3 { background: linear-gradient(135deg, #c8e6d8 0%, #a5d4bd 100%); }
.gradient-4 { background: linear-gradient(135deg, #f0d4c8 0%, #e0b8a8 100%); }
.gradient-5 { background: linear-gradient(135deg, #e8d4f0 0%, #d0b8e0 100%); }

.project-overlay {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(255, 255, 255, 0.95);
}

.project-year {
    font-size: 0.688rem;
    color: var(--color-text-primary);
    letter-spacing: 0.1em;
}

.project-meta {
    padding: var(--spacing-lg);
}

.project-category {
    font-size: 0.688rem;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--spacing-xs);
}

.project-title {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 200;
    margin-bottom: var(--spacing-sm);
}

.project-description {
    font-size: 0.938rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.project-grid-small {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.project-item {
    background: var(--color-bg);
    overflow: hidden;
}

.project-item .project-image-wrapper {
    aspect-ratio: 4/3;
}

/* Services Section */
.services {
    background: var(--color-bg);
}

.services-container {
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
}

.section-title-large {
    font-size: clamp(4rem, 10vw, 8rem);
    font-weight: 100;
    margin-bottom: var(--spacing-xl);
}

.services-list {
    margin-top: var(--spacing-xl);
}

.service-item {
    display: grid;
    grid-template-columns: 50px 1fr 50px;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--color-bg-tertiary);
    transition: all 0.4s ease;
    cursor: pointer;
    align-items: center;
    position: relative;
}

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

.service-item:hover {
    padding: var(--spacing-lg) var(--spacing-md);
    margin: 0 calc(-1 * var(--spacing-md));
    background: var(--color-bg-secondary);
}

.service-item:hover .service-arrow {
    transform: translateX(8px) rotate(45deg);
    opacity: 1;
}

.service-item:hover .service-img {
    transform: scale(1.05);
}

.service-number {
    font-size: 0.813rem;
    color: var(--color-text-tertiary);
    position: relative;
    z-index: 2;
    pointer-events: auto;
}

.service-content {
    position: relative;
    z-index: 2;
    pointer-events: auto;
}

.service-content h3 {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    font-weight: 200;
    margin-bottom: var(--spacing-xs);
}

.service-content p {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.service-tags {
    display: flex;
    gap: var(--spacing-xs);
    list-style: none;
    margin-top: var(--spacing-sm);
    position: relative;
    z-index: 2;
}

.service-tags li {
    font-size: 0.688rem;
    color: var(--color-text-secondary);
    background: var(--color-bg-secondary);
    padding: 0.375rem 0.75rem;
    border-radius: 20px;
    border: 1px solid var(--color-bg-tertiary);
}

/* Service Image - 右侧背景图片效果 */
.service-image-wrapper {
    position: absolute;
    right: 0;
    top: 0;
    width: 50%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
    z-index: 0;
}

.service-image-wrapper .service-img {
    position: absolute;
    right: 0;
    top: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s ease;
    -webkit-mask-image: radial-gradient(ellipse 70% 90% at 80% 50%,
        rgba(0,0,0,1) 0%,
        rgba(0,0,0,0.95) 10%,
        rgba(0,0,0,0.8) 25%,
        rgba(0,0,0,0.6) 40%,
        rgba(0,0,0,0.3) 60%,
        rgba(0,0,0,0.1) 80%,
        transparent 95%);
    mask-image: radial-gradient(ellipse 70% 90% at 80% 50%,
        rgba(0,0,0,1) 0%,
        rgba(0,0,0,0.95) 10%,
        rgba(0,0,0,0.8) 25%,
        rgba(0,0,0,0.6) 40%,
        rgba(0,0,0,0.3) 60%,
        rgba(0,0,0,0.1) 80%,
        transparent 95%);
}

.service-arrow {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    opacity: 0.3;
    transition: all 0.4s ease;
    position: relative;
    z-index: 2;
    pointer-events: auto;
}

/* About Preview */
.about-preview {
    background: var(--color-bg-secondary);
    padding: 0;
}

.about-grid-asymmetric {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    min-height: 80vh;
}

.about-visual-large {
    background: var(--color-bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    width: 100%;
    height: 100%;
}

.visual-container-large {
    width: 100%;
    height: 100%;
    min-height: 80vh;
    overflow: hidden;
}

/* About Image - 填充满容器 */
.about-image-wrapper {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.about-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.abstract-shape-large {
    width: 100%;
    height: 100%;
    background: var(--gradient-2, #c9daf0);
    border-radius: 35% 65% 45% 55% / 30% 40% 60% 70%;
    animation: morph 12s ease-in-out infinite;
}

@keyframes morph {
    0%, 100% { border-radius: 35% 65% 45% 55% / 30% 40% 60% 70%; }
    50% { border-radius: 65% 35% 55% 45% / 70% 30% 70% 30%; }
}

.about-content-asymmetric {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--spacing-xl);
}

.section-title-asymmetric {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 100;
    line-height: 0.9;
    margin-bottom: var(--spacing-lg);
}

.text-accent {
    color: var(--color-accent);
}

.about-text-large {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    line-height: 2;
    margin-bottom: var(--spacing-lg);
    max-width: 500px;
}

.stats-asymmetric {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.stat-item {
    text-align: left;
}

.stat-number {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 100;
    color: var(--color-accent);
}

.stat-plus, .stat-percent {
    font-size: 1.25rem;
    color: var(--color-accent);
    vertical-align: top;
}

.stat-label {
    display: block;
    font-size: 0.813rem;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
}

/* Contact CTA */
.contact-cta {
    background: var(--color-bg);
    text-align: center;
}

.contact-cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.contact-label {
    font-size: 0.688rem;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.25em;
    margin-bottom: var(--spacing-sm);
}

.contact-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 100;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

.text-gradient {
    color: var(--color-accent);
}

.email-link-large {
    display: block;
    font-size: clamp(1.5rem, 4vw, 3rem);
    color: var(--color-text-primary);
    text-decoration: none;
    margin-bottom: var(--spacing-lg);
    transition: color 0.3s ease;
}

.email-link-large:hover {
    color: var(--color-accent);
}

/* Footer */
.footer {
    background: var(--color-bg-secondary);
    padding: var(--spacing-xl);
    border-top: 1px solid var(--color-bg-tertiary);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-top {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-bg-tertiary);
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.2em;
}

.footer-tagline {
    font-size: 0.813rem;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
}

.footer-nav {
    display: flex;
    gap: var(--spacing-md);
}

.footer-nav a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.813rem;
    text-transform: uppercase;
}

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

.footer-bottom p {
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.75rem;
    text-transform: uppercase;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.fade-in-up {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

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

/* 视差类 */
.parallax-card {
    will-change: transform;
}

.parallax-list-item {
    will-change: transform;
}

/* 页面过渡 */
body {
    transition: opacity 0.4s ease;
}

/* Page Header - 内页头部 */
.page-header {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    padding: var(--spacing-xl);
}

.page-header-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.page-header-content {
    position: relative;
    z-index: 1;
}

.page-title {
    font-size: clamp(4rem, 12vw, 10rem);
    font-weight: 100;
    line-height: 1;
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-md);
    white-space: nowrap;
}

.page-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto;
}

/* Page Content */
.page-content {
    padding: var(--spacing-xl) var(--spacing-xl);
}

.content-grid {
    max-width: 1400px;
    margin: 0 auto;
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.product-card {
    background: var(--color-bg);
    overflow: hidden;
    transition: all 0.5s ease;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.product-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

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

.product-image .placeholder-image {
    width: 100%;
    height: 100%;
    transition: transform 0.8s ease;
}

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

.product-info {
    padding: var(--spacing-lg);
}

@media (max-width: 768px) {
    .product-info {
        padding: var(--spacing-sm);
    }

    .product-content {
        padding: var(--spacing-sm);
    }
}

.product-category {
    font-size: 0.688rem;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--spacing-xs);
}

.product-title {
    font-size: 1.5rem;
    font-weight: 200;
    margin-bottom: var(--spacing-sm);
}

.product-description {
    font-size: 0.938rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Solution Card */
.solution-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    margin-bottom: var(--spacing-xxl, 12rem);
}

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

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

.solution-image {
    aspect-ratio: 16/10;
    overflow: hidden;
    position: relative;
}

.solution-image-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
}

.solution-image-gradient {
    position: absolute;
    left: 0;
    top: 0;
    width: 50%;
    height: 100%;
    z-index: 1;
}

.solution-image-wrapper .solution-img {
    position: absolute;
    right: 0;
    top: 0;
    width: 60%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s ease;
}

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

.solution-content {
    padding: var(--spacing-lg);
}

.solution-label {
    font-size: 0.688rem;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: var(--spacing-sm);
}

.solution-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 200;
    margin-bottom: var(--spacing-md);
}

.solution-text {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.solution-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    list-style: none;
}

.solution-features li {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    padding-left: var(--spacing-md);
    position: relative;
}

.solution-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 4px;
    height: 4px;
    background: var(--color-accent);
    border-radius: 50%;
    transform: translateY(-50%);
}

/* About Page */
.about-page-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.about-page-content {
    padding-right: var(--spacing-lg);
}

.about-page-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 100;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

.about-page-title .text-accent {
    display: block;
}

.about-page-text {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    line-height: 2;
    margin-bottom: var(--spacing-md);
}

/* Contact Page */
.contact-page-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.contact-info {
    padding: var(--spacing-lg);
}

.contact-info-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 100;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
}

.contact-detail {
    margin-bottom: var(--spacing-lg);
}

.contact-detail-label {
    font-size: 0.688rem;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: var(--spacing-xs);
}

.contact-detail-value {
    font-size: 1.25rem;
    color: var(--color-text-primary);
    text-decoration: none;
    display: block;
    transition: color 0.3s ease;
}

.contact-detail-value:hover {
    color: var(--color-accent);
}

.contact-form-container {
    background: var(--color-bg-secondary);
    padding: var(--spacing-xl);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    position: relative;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm) 0;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--color-bg-tertiary);
    color: var(--color-text-primary);
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: transparent;
}

.form-group label {
    position: absolute;
    top: var(--spacing-sm);
    left: 0;
    font-size: 1rem;
    color: var(--color-text-secondary);
    pointer-events: none;
    transition: all 0.3s ease;
}

.form-group input:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group textarea:focus + label,
.form-group textarea:not(:placeholder-shown) + label {
    top: -10px;
    font-size: 0.75rem;
    color: var(--color-accent);
}

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

.submit-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-accent);
    border: none;
    color: #fff;
    font-size: 0.813rem;
    font-weight: 500;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: all 0.4s ease;
    align-self: flex-start;
}

.submit-button:hover {
    background: var(--color-accent-dark, #8f7338);
    transform: translateX(4px);
}

/* Responsive */
@media (max-width: 1200px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1024px) {
    .about-grid-asymmetric {
        grid-template-columns: 1fr;
    }

    .section-header-asymmetric {
        grid-template-columns: 1fr;
    }

    .header-description {
        text-align: left;
    }

    .service-image-wrapper {
        width: 40%;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .page-content {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .section-header-asymmetric {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        padding: 0;
        max-width: 100%;
    }

    .header-description {
        text-align: left;
        font-size: 0.938rem;
        line-height: 1.8;
    }

    .projects-asymmetric {
        grid-template-columns: 1fr;
        padding: 0;
        max-width: 100%;
    }

    .project-hero-item {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        margin-bottom: var(--spacing-lg);
    }

    .project-hero-item .project-image-wrapper {
        width: 100%;
    }

    .project-reverse {
        grid-template-columns: 1fr !important;
        direction: ltr !important;
    }

    .project-reverse .project-image-wrapper {
        order: 1;
    }

    .project-reverse .project-meta {
        order: 2;
    }

    .project-meta {
        padding: var(--spacing-md);
    }

    .project-grid-small {
        grid-template-columns: 1fr !important;
        gap: var(--spacing-md) !important;
    }

    .project-item {
        grid-template-columns: 1fr;
    }

    .project-item .project-image-wrapper {
        width: 100%;
        aspect-ratio: 4/3;
    }

    .section-label {
        white-space: nowrap;
    }

    .section-title {
        white-space: nowrap;
        font-size: clamp(2rem, 10vw, 3rem);
    }

    .products-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        padding: 0 var(--spacing-sm);
    }

    .product-card {
        margin: 0;
        width: 100%;
    }

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

    .product-content {
        padding: var(--spacing-md);
    }

    .product-category {
        font-size: 0.625rem;
        letter-spacing: 0.15em;
    }

    .product-title {
        font-size: 1.25rem;
        line-height: 1.3;
        margin: var(--spacing-xs) 0;
    }

    .product-description {
        font-size: 0.813rem;
        line-height: 1.6;
        display: -webkit-box;
        -webkit-line-clamp: 4;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    section {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .hero {
        padding: var(--spacing-md) var(--spacing-sm);
    }

    .work {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .services {
        padding: var(--spacing-lg) var(--spacing-md);
    }

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

    .page-title {
        white-space: nowrap;
        font-size: clamp(2.5rem, 15vw, 5rem);
    }

    .page-subtitle {
        font-size: 0.875rem;
        line-height: 1.8;
        max-width: 100%;
    }

    .hero-title {
        margin-bottom: var(--spacing-md);
    }

    .hero-description {
        font-size: 1rem;
    }

    /* 移动端隐藏视差元素 */
    .hero-foreground-text,
    .parallax-shape,
    .particle,
    .hero-accent {
        display: none;
    }

    .scroll-indicator {
        display: none;
    }

    .section-header-asymmetric {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        padding: 0 var(--spacing-xs);
    }

    .header-description {
        text-align: left;
    }

    .projects-asymmetric {
        grid-template-columns: 1fr;
        padding: 0 var(--spacing-xs);
    }

    .project-hero-item {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        margin-bottom: var(--spacing-lg);
    }

    .project-hero-item .project-image-wrapper {
        width: 100%;
    }

    .project-reverse {
        grid-template-columns: 1fr !important;
        direction: ltr !important;
    }

    .project-reverse .project-image-wrapper {
        order: 1;
    }

    .project-reverse .project-meta {
        order: 2;
    }

    .project-meta {
        padding: var(--spacing-md);
    }

    .project-grid-small {
        grid-template-columns: 1fr !important;
        gap: var(--spacing-md) !important;
    }

    .project-item {
        grid-template-columns: 1fr;
    }

    .project-item .project-image-wrapper {
        width: 100%;
        aspect-ratio: 4/3;
    }

    .section-label {
        white-space: nowrap;
    }

    .section-title {
        white-space: nowrap;
    }

    .service-item {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
        padding-right: 0;
        position: static;
        overflow: visible;
    }

    .service-item:hover {
        padding-left: var(--spacing-sm);
        margin: 0;
    }

    .service-number {
        display: none;
    }

    .service-image-wrapper {
        display: none;
    }

    .service-arrow {
        display: none;
    }

    .service-content h3 {
        font-size: 1.25rem;
    }

    .service-content p {
        font-size: 0.875rem;
    }

    .service-tags {
        flex-wrap: wrap;
    }

    .service-tags li {
        font-size: 0.625rem;
    }

    .stats-asymmetric {
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }

    .stat-item {
        text-align: left;
    }

    .about-text-large {
        max-width: 100%;
    }

    .contact-cta {
        padding: var(--spacing-lg) var(--spacing-sm);
    }

    .contact-cta-title {
        font-size: 1.5rem;
    }

    .email-link-large {
        font-size: 1rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        text-align: center;
    }

    .footer-top {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .footer-brand {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-xs);
    }

    .footer-nav {
        justify-content: center;
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }

    .footer-nav a {
        font-size: 0.75rem;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-xs);
        text-align: center;
    }

    .footer-copyright {
        font-size: 0.688rem;
    }

    .footer-social {
        justify-content: center;
        gap: var(--spacing-sm);
    }

    .footer-social a {
        font-size: 0.75rem;
    }

    .solution-card {
        grid-template-columns: 1fr !important;
        gap: var(--spacing-md) !important;
        margin-bottom: var(--spacing-lg) !important;
    }

    .solution-card.reverse {
        direction: ltr !important;
    }

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

    .solution-title {
        font-size: 1.125rem;
        line-height: 1.3;
        margin: var(--spacing-xs) 0;
    }

    .solution-text {
        font-size: 0.813rem;
        line-height: 1.6;
    }

    .solution-features {
        display: flex;
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }

    .solution-features li {
        font-size: 0.688rem;
        padding: 0.25rem 0.625rem;
        background: var(--color-bg-secondary);
        border-radius: 20px;
        padding-left: 0.625rem;
    }

    .solution-features li::before {
        display: none;
    }

    .about-page-grid {
        grid-template-columns: 1fr !important;
        gap: var(--spacing-md) !important;
    }

    .about-page-content {
        padding-right: 0;
    }

    .about-page-title {
        font-size: clamp(1.75rem, 8vw, 2.5rem);
        line-height: 1.2;
    }

    .about-page-text {
        font-size: 0.875rem;
        line-height: 1.8;
    }

    .contact-form-container {
        grid-template-columns: 1fr !important;
    }

    .contact-page-grid {
        grid-template-columns: 1fr !important;
        gap: var(--spacing-md) !important;
    }

    .contact-info {
        padding: 0;
    }

    .contact-info-title {
        font-size: clamp(1.5rem, 8vw, 2rem);
        line-height: 1.2;
    }

    .contact-detail-value {
        font-size: 1rem;
    }

    .contact-form-container {
        padding: var(--spacing-md);
    }

    .page-content {
        padding: var(--spacing-lg) var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .logo-text {
        font-size: 0.875rem;
    }

    .section-header-asymmetric {
        padding: 0;
    }

    .projects-asymmetric {
        padding: 0;
    }

    .section-title {
        white-space: nowrap;
    }

    .products-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        padding: 0 var(--spacing-xs);
    }

    .product-card {
        width: 100%;
    }

    .product-image {
        aspect-ratio: 16/9;
    }

    .product-content {
        padding: var(--spacing-md);
    }

    .product-category {
        font-size: 0.688rem;
        letter-spacing: 0.2em;
    }

    .product-title {
        font-size: 1.25rem;
        line-height: 1.4;
        margin: var(--spacing-xs) 0;
    }

    .product-description {
        font-size: 0.813rem;
        line-height: 1.6;
        display: -webkit-box;
        -webkit-line-clamp: 4;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .hero-title .line-offset {
        margin-left: 0;
    }

    .hero-title {
        font-size: clamp(2.5rem, 15vw, 5rem);
    }

    .hero-subtitle {
        font-size: 0.625rem;
    }

    .hero-description {
        font-size: 0.875rem;
    }

    .section-title {
        font-size: clamp(1.5rem, 8vw, 2.5rem);
        white-space: nowrap;
    }

    .section-title-large {
        font-size: clamp(2rem, 10vw, 3.5rem);
        white-space: nowrap;
    }

    .section-label {
        font-size: 0.625rem;
    }

    .project-category {
        font-size: 0.625rem;
    }

    .project-title {
        font-size: 1rem;
    }

    .project-description {
        font-size: 0.875rem;
        line-height: 1.6;
    }

    .project-meta {
        padding: var(--spacing-md);
    }

    .project-hero-item {
        gap: var(--spacing-sm);
    }

    .project-grid-small {
        gap: var(--spacing-sm) !important;
    }

    .cta-button {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: 0.75rem;
    }

    .submit-button {
        width: 100%;
    }

    .solution-card {
        gap: var(--spacing-sm) !important;
    }

    .solution-title {
        font-size: 1.125rem;
    }

    .solution-text {
        font-size: 0.813rem;
    }

    .solution-features li {
        font-size: 0.625rem;
        padding: 0.25rem 0.5rem;
    }

    .about-page-title {
        font-size: clamp(1.5rem, 8vw, 2.25rem);
    }

    .about-page-text {
        font-size: 0.813rem;
    }

    .contact-info-title {
        font-size: clamp(1.25rem, 8vw, 1.75rem);
    }

    .contact-detail-value {
        font-size: 0.875rem;
    }

    .footer {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .footer-tagline {
        font-size: 0.75rem;
    }

    .footer-nav {
        gap: var(--spacing-xs);
    }

    .footer-nav a {
        font-size: 0.688rem;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-xs);
        text-align: center;
    }

    .footer-copyright {
        font-size: 0.688rem;
    }

    .footer-social {
        gap: var(--spacing-xs);
    }

    .footer-social a {
        font-size: 0.688rem;
    }
}