/* ========================================
   鍙ゅ緱鏈虹數 (GUDE) - 鐜颁唬鍖栦紒涓氱綉绔?   绉戞妧钃濊壊椋庢牸 路 璞″緛绉戞妧涓庢湭鏉?   ======================================== */

/* CSS 鍙橀噺 - 鏄庝寒澶╄摑鑹茬郴 */
:root {
    --primary: #4A90E2;
    --primary-light: #5BA3F5;
    --primary-mid: #3D7BD4;
    --accent: #00D4FF;
    --accent-hover: #00B8E6;
    --accent-light: #4DE8FF;
    --accent-glow: rgba(0, 212, 255, 0.35);
    --accent-deep: #0099CC;
    --text-white: #ffffff;
    --text-light: #E8F4FC;
    --text-muted: #A8D4F0;
    --bg-dark: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #4A90E2 100%);
    --bg-card: rgba(255, 255, 255, 0.12);
    --bg-card-hover: rgba(255, 255, 255, 0.2);
    --bg-section: linear-gradient(135deg, #4A90E2 0%, #5BA3F5 50%, #667eea 100%);
    --border: rgba(255, 255, 255, 0.2);
    --border-hover: rgba(255, 255, 255, 0.35);
    --gradient-1: linear-gradient(135deg, #4A90E2 0%, #5BA3F5 40%, #667eea 100%);
    --gradient-accent: linear-gradient(135deg, #00D4FF, #4DE8FF);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 30%, #4A90E2 60%, #5BA3F5 100%);
    --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 48px rgba(0, 0, 0, 0.2);
    --shadow-accent: 0 4px 24px var(--accent-glow);
    --radius: 16px;
    --radius-lg: 24px;
    --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.7;
    color: var(--text-white);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #4A90E2 50%, #5BA3F5 75%, #00D4FF 100%);
    background-attachment: fixed;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

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

ul { list-style: none; }
img { max-width: 100%; height: auto; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========================================
   瀵艰埅鏍?   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-md);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.nav-logo {
    height: 42px;
    width: auto;
    transition: var(--transition);
}

.nav-logo:hover {
    transform: scale(1.05);
}

/* GUDE 文字LOGO */
.text-logo {
    display: flex;
    align-items: baseline;
    gap: 10px;
    text-decoration: none;
    transition: var(--transition);
}

.text-logo:hover {
    transform: scale(1.03);
}

.logo-gude {
    font-size: 2rem;
    font-weight: 900;
    letter-spacing: 4px;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.logo-sub {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
    letter-spacing: 2px;
}

.footer-text-logo .logo-gude {
    font-size: 2.2rem;
}

.footer-text-logo .logo-sub {
    font-size: 0.9rem;
}

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

.nav-link {
    padding: 8px 14px;
    font-size: 0.85rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: white;
    background: rgba(255, 255, 255, 0.15);
}

.nav-link.active {
    color: #00D4FF;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--accent);
    border-radius: 1px;
}

/* 下拉菜单样式 */
.nav-dropdown {
    position: relative;
}

.nav-dropdown .fa-chevron-down {
    font-size: 0.7rem;
    margin-left: 4px;
    transition: transform 0.3s ease;
}

.nav-dropdown:hover .fa-chevron-down {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    background: rgba(15, 20, 35, 0.98);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 6px 0;
    margin-top: 6px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    z-index: 1001;
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

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

.dropdown-menu a {
    display: block;
    padding: 10px 16px;
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.85rem;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.dropdown-menu a:hover {
    color: white;
    background: rgba(0, 212, 255, 0.15);
    padding-left: 24px;
}

/* 三级菜单样式 */
.nav-submenu {
    position: relative;
}

.nav-submenu > a {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-submenu .fa-chevron-right {
    font-size: 0.6rem;
    margin-left: 8px;
    transition: transform 0.3s ease;
}

.nav-submenu:hover .fa-chevron-right {
    transform: rotate(90deg);
}

.submenu {
    position: absolute;
    top: 0;
    left: 100%;
    min-width: 140px;
    background: rgba(15, 20, 35, 0.98);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 6px 0;
    margin-left: 6px;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-10px);
    transition: all 0.3s ease;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    z-index: 1002;
}

.nav-submenu:hover .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.submenu li {
    list-style: none;
}

.submenu a {
    display: block;
    padding: 8px 14px;
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.8rem;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.submenu a:hover {
    color: white;
    background: rgba(0, 212, 255, 0.15);
    padding-left: 22px;
}

/* 语言切换按钮 */
.lang-switch {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: 16px;
    padding-left: 16px;
    border-left: 1px solid rgba(255, 255, 255, 0.2);
}

.lang-switch a {
    font-size: 0.85rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.7);
    padding: 4px 10px;
    border-radius: 6px;
    transition: var(--transition);
}

.lang-switch a:hover {
    color: white;
    background: rgba(255, 255, 255, 0.15);
}

.lang-switch a.active {
    color: var(--accent);
    background: rgba(0, 212, 255, 0.15);
}

@media (max-width: 768px) {
    .lang-switch {
        margin-left: 0;
        padding-left: 0;
        border-left: none;
        padding: 10px 16px;
    }
}

.nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border);
    border-radius: 8px;
    width: 44px;
    height: 44px;
    font-size: 1.2rem;
    color: var(--text-white);
    cursor: pointer;
    transition: var(--transition);
}

.nav-toggle:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border-hover);
}

/* ========================================
   Hero 鍖哄煙
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding-top: 72px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: url('images/bg-hero-universe.jpg') center/cover no-repeat;
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(74, 144, 226, 0.2) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(118, 75, 162, 0.15) 0%, transparent 45%),
        radial-gradient(circle at 50% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 60%);
}

/* 底部渐变遮罩 */
.hero-bg::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 300px;
    background: linear-gradient(to top, rgba(10, 15, 30, 0.8), transparent);
}

.hero-particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

/* 流星动画 */
.meteor {
    position: absolute;
    width: 4px;
    height: 4px;
    background: linear-gradient(90deg, #fff, transparent);
    border-radius: 50%;
    opacity: 0;
    animation: meteor-fall linear infinite;
}


.meteor:nth-child(1) {
    top: 10%;
    left: 80%;
    animation-duration: 4s;
    animation-delay: 0s;
}

.meteor:nth-child(2) {
    top: 20%;
    left: 60%;
    animation-duration: 5s;
    animation-delay: 2s;
}

.meteor:nth-child(3) {
    top: 5%;
    left: 40%;
    animation-duration: 6s;
    animation-delay: 4s;
}

.meteor:nth-child(4) {
    top: 30%;
    left: 90%;
    animation-duration: 4.5s;
    animation-delay: 1s;
}

.meteor:nth-child(5) {
    top: 15%;
    left: 30%;
    animation-duration: 5.5s;
    animation-delay: 3s;
}

@keyframes meteor-fall {
    0% {
        opacity: 0;
        transform: translateX(0) translateY(0) rotate(-45deg);
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: translateX(-300px) translateY(300px) rotate(-45deg);
    }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 750px;
    padding: 60px 0;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 168, 255, 0.1);
    border: 1px solid rgba(0, 168, 255, 0.3);
    color: var(--accent);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 30px;
    animation: fadeInUp 0.8s ease;
}

.hero-badge i {
    font-size: 0.9rem;
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    color: var(--text-white);
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: -1px;
    animation: fadeInUp 0.8s ease 0.1s both;
}

.hero-title .highlight {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-light);
    line-height: 1.9;
    margin-bottom: 40px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 60px;
    animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 30px;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-stat {
    text-align: center;
}

.hero-stat .num {
    display: block;
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--text-white);
    line-height: 1;
}

.hero-stat .label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 6px;
}

.hero-stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

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

/* 婊氬姩鎸囩ず */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 0.75rem;
    animation: float 3s ease-in-out infinite;
}

.mouse {
    width: 24px;
    height: 38px;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 12px;
    position: relative;
}

.wheel {
    width: 3px;
    height: 8px;
    background: var(--accent);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll-wheel 2s infinite;
}

@keyframes scroll-wheel {
    0% { opacity: 1; top: 6px; }
    100% { opacity: 0; top: 20px; }
}

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

/* ========================================
   鎸夐挳
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, #00D4FF, #4DE8FF);
    color: #0f1923;
    font-weight: 600;
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.5);
}

.btn-glass {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-glass:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.btn-dark {
    background: white;
    color: #4A90E2;
    font-weight: 600;
}

.btn-dark:hover {
    background: linear-gradient(135deg, #00D4FF, #4DE8FF);
    color: #0f1923;
    transform: translateY(-2px);
}

.btn-small {
    padding: 10px 24px;
    font-size: 0.85rem;
    background: var(--accent);
    color: white;
    border-radius: 8px;
}

.btn-small:hover {
    background: var(--accent-hover);
}

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

/* ========================================
   閫氱敤鏍囬
   ======================================== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

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

.section-header.light .section-desc {
    color: var(--text-light);
}

.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    color: #00D4FF;
    letter-spacing: 4px;
    margin-bottom: 16px;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 900;
    color: white;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.section-desc {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 560px;
    margin: 0 auto;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

/* ========================================
   浜у搧涓績
   ======================================== */
.products {
    padding: 120px 0;
    background: 
        linear-gradient(135deg, rgba(10, 15, 30, 0.7) 0%, rgba(10, 15, 30, 0.6) 100%),
        url('images/bg-products-new.jpg');
    background-size: cover;
    background-position: center;
    position: relative;
}


.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    position: relative;
    z-index: 1;
}

.product-card {
    background: rgba(10, 15, 30, 0.45);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.product-card:hover {
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    background: rgba(10, 15, 30, 0.55);
}

.product-image {
    position: relative;
    overflow: hidden;
}

.product-image .image-placeholder {
    aspect-ratio: 16/9;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.15);
    font-size: 4rem;
    transition: var(--transition);
}

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

.product-overlay {
    position: absolute;
    inset: 0;
    background: rgba(10, 10, 10, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.product-card:hover .product-overlay {
    opacity: 1;
}

.product-content {
    padding: 28px;
}

.product-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    background: rgba(0, 168, 255, 0.1);
    padding: 4px 12px;
    border-radius: 50px;
    margin-bottom: 14px;
}

.product-content h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 12px;
}

.product-content p {
    color: var(--text-muted);
    font-size: 0.92rem;
    line-height: 1.7;
    margin-bottom: 18px;
}

.product-features {
    display: flex;
    gap: 20px;
}

.product-features li {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-light);
}

.product-features li i {
    color: var(--accent);
    font-size: 0.75rem;
}

/* ========================================
   关于古得
   ======================================== */
.about {
    padding: 120px 0;
    background: 
        linear-gradient(135deg, rgba(10, 15, 30, 0.55) 0%, rgba(10, 15, 30, 0.45) 100%),
        url('images/bg-about-new.jpg');
    background-size: cover;
    background-position: center;
    position: relative;
}


.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.image-frame {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
}

.image-placeholder {
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-mid));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.15);
    font-size: 4rem;
    gap: 12px;
}

.image-placeholder.large {
    aspect-ratio: 4/3;
}

.image-placeholder span {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.3);
}

.factory-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius);
}

.about-badges {
    display: flex;
    gap: 16px;
    margin-top: 20px;
}

.about-badge {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 16px 24px;
    border-radius: var(--radius);
    transition: var(--transition);
}

.about-badge:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-accent);
}

.about-badge i {
    font-size: 1.5rem;
    color: var(--accent);
}

.about-badge strong {
    display: block;
    font-size: 1.3rem;
    color: var(--text-white);
    line-height: 1;
}

.about-badge span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.about-text .section-tag {
    display: block;
    text-align: left;
    margin-bottom: 12px;
}

.about-text h2 {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--text-white);
    margin-bottom: 24px;
    letter-spacing: -0.5px;
}

.about-lead {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 16px;
    line-height: 1.8;
}

.about-text p {
    color: var(--text-muted);
    margin-bottom: 30px;
    line-height: 1.8;
}

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

.about-features {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 36px;
}

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

.feature-icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    background: rgba(0, 168, 255, 0.1);
    border: 1px solid rgba(0, 168, 255, 0.2);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 1rem;
}

.feature-item strong {
    display: block;
    font-size: 1rem;
    color: var(--text-white);
    margin-bottom: 4px;
}

.feature-item span {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* ========================================
   鏍稿績浼樺娍
   ======================================== */
.advantages {
    padding: 120px 0;
    background: 
        linear-gradient(135deg, rgba(10, 15, 30, 0.5) 0%, rgba(10, 15, 30, 0.4) 100%),
        url('images/bg-advantages-new.jpg');
    background-size: cover;
    background-position: center;
    position: relative;
    overflow: hidden;
}


.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
    z-index: 1;
}

.advantage-card {
    background: rgba(10, 15, 30, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-lg);
    padding: 40px 28px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-accent);
    opacity: 0;
    transition: var(--transition);
}

.advantage-card:hover {
    background: rgba(10, 15, 30, 0.55);
    border-color: rgba(255, 255, 255, 0.25);
    transform: translateY(-6px);
}

.advantage-card:hover::before {
    opacity: 1;
}

.advantage-number {
    position: absolute;
    top: 16px;
    right: 20px;
    font-size: 3rem;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.03);
    line-height: 1;
}

.advantage-icon {
    width: 72px;
    height: 72px;
    background: var(--gradient-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 1.6rem;
    color: white;
    box-shadow: var(--shadow-accent);
}

.advantage-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 14px;
}

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

/* ========================================
   应用领域
   ======================================== */
.application {
    padding: 120px 0;
    background: 
        linear-gradient(135deg, rgba(10, 15, 30, 0.55) 0%, rgba(10, 15, 30, 0.45) 100%),
        url('images/bg-applications-new.jpg');
    background-size: cover;
    background-position: center;
    position: relative;
}


.app-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.app-card {
    background: rgba(10, 15, 30, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius);
    padding: 36px 28px;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.app-card:hover {
    border-color: rgba(0, 212, 255, 0.4);
    background: rgba(10, 15, 30, 0.55);
    transform: translateY(-4px);
    box-shadow: var(--shadow-accent);
}

.app-icon {
    width: 64px;
    height: 64px;
    background: rgba(0, 168, 255, 0.08);
    border: 1px solid rgba(0, 168, 255, 0.15);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.5rem;
    color: var(--accent);
    transition: var(--transition);
}

.app-card:hover .app-icon {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.app-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 10px;
}

.app-card p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ========================================
   新闻动态 / 开发者日志
   ======================================== */
.news {
    padding: 120px 0;
    background:
        linear-gradient(135deg, rgba(10, 15, 30, 0.6) 0%, rgba(10, 15, 30, 0.5) 100%),
        url('images/tech-pattern.jpg');
    background-size: cover;
    background-position: center;
    position: relative;
}


.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    position: relative;
    z-index: 1;
}

.news-card {
    background: rgba(10, 15, 30, 0.45);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.news-card:hover {
    border-color: rgba(0, 212, 255, 0.4);
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    background: rgba(10, 15, 30, 0.55);
}

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

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

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

.news-category {
    position: absolute;
    top: 14px;
    left: 14px;
    background: var(--accent);
    color: white;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 5px 12px;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.news-content {
    padding: 24px;
}

.news-date {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--accent);
    margin-bottom: 12px;
    font-weight: 500;
}

.news-date i {
    font-size: 0.85rem;
}

.news-content h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 12px;
    line-height: 1.5;
    transition: var(--transition);
}

.news-content h3 a {
    color: var(--text-white);
    text-decoration: none;
    transition: var(--transition);
}

.news-content h3 a:hover {
    color: var(--accent);
}

.news-content p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 18px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-readmore {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition);
}

.news-readmore:hover {
    gap: 10px;
    color: var(--accent);
}

.news-readmore i {
    font-size: 0.75rem;
    transition: var(--transition);
}

.news-readmore:hover i {
    transform: translateX(3px);
}

.news-more {
    text-align: center;
    margin-top: 48px;
    position: relative;
    z-index: 1;
}

/* ========================================
   联系我们
   ======================================== */
.contact {
    padding: 120px 0;
    background: 
        linear-gradient(135deg, rgba(10, 15, 30, 0.5) 0%, rgba(10, 15, 30, 0.4) 100%),
        url('images/bg-contact-new.jpg');
    background-size: cover;
    background-position: center;
    position: relative;
}




.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 40px;
    position: relative;
    z-index: 1;
}

.contact-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.contact-card {
    background: rgba(10, 15, 30, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius);
    padding: 28px;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.contact-card:hover {
    border-color: rgba(0, 212, 255, 0.4);
    background: rgba(10, 15, 30, 0.55);
    transform: translateY(-3px);
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: rgba(0, 168, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 1.1rem;
    margin-bottom: 16px;
}

.contact-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 10px;
}

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

.contact-form-wrapper {
    background: rgba(10, 15, 30, 0.45);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-lg);
    padding: 40px;
    backdrop-filter: blur(10px);
    position: relative;
    z-index: 1;
}

.contact-form h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 8px;
}

.contact-form h3 i {
    color: var(--accent);
    margin-right: 8px;
}

.form-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    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: 0.85rem;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 10px;
    color: var(--text-white);
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.form-group select option {
    background: #4A90E2;
    color: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.5);
    background: rgba(255, 255, 255, 0.22);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.2);
}

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

/* ========================================
   椤佃剼
   ======================================== */
.footer {
    background: linear-gradient(135deg, #3D7BD4 0%, #4A90E2 100%);
    padding: 80px 0 30px;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-logo {
    height: 48px;
    width: auto;
    margin-bottom: 20px;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.8;
    margin-bottom: 20px;
}

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

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: var(--transition);
}

.social-link:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
    transform: translateY(-3px);
}

.footer-links h4,
.footer-contact h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 20px;
}

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

.footer-links a {
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: var(--transition);
}

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

.footer-contact p {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 14px;
}

.footer-contact i {
    color: var(--accent);
    width: 16px;
    font-size: 0.85rem;
}

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 24px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.82rem;
}

.footer-bottom .beian {
    margin-top: 8px;
}

.footer-bottom .beian a {
    color: var(--text-muted);
    transition: var(--transition);
}

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

.footer-bottom .beian .divider {
    margin: 0 10px;
    color: var(--text-muted);
}

/* ========================================
   鍥炲埌椤堕儴
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-accent);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px var(--accent-glow);
}

/* ========================================
   閫氱煡鎻愮ず
   ======================================== */
.notification {
    position: fixed;
    top: 90px;
    right: 24px;
    padding: 16px 24px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 10000;
    animation: slideInRight 0.4s ease;
    font-size: 0.9rem;
    font-weight: 500;
}

.notification-success {
    background: #06d6a0;
    color: #0a0a0a;
}

.notification-error {
    background: var(--accent);
    color: white;
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(100px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes slideOutRight {
    from { opacity: 1; transform: translateX(0); }
    to { opacity: 0; transform: translateX(100px); }
}

/* ========================================
   婊氬姩鍔ㄧ敾
   ======================================== */
.animate-in {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* ========================================
   鍝嶅簲寮忚璁?   ======================================== */
@media (max-width: 1024px) {
    .hero-title { font-size: 3rem; }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .advantages-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-content { grid-template-columns: repeat(2, 1fr); }
}

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

    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(10, 10, 10, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 16px;
        gap: 4px;
        border-bottom: 1px solid var(--border);
        transform: translateY(-120%);
        opacity: 0;
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
    }

    .nav-link {
        padding: 14px 16px;
        border-radius: 10px;
        font-size: 1rem;
    }

    .hero-title { font-size: 2.4rem; }
    .hero-subtitle { font-size: 1rem; }
    .hero-buttons { flex-direction: column; }
    .hero-stats { gap: 20px; }
    .hero-stat .num { font-size: 1.8rem; }

    .about-content { grid-template-columns: 1fr; gap: 40px; }
    .about-text h2 { font-size: 2rem; }

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

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

    .footer-content { grid-template-columns: 1fr; gap: 36px; }

    .section-title { font-size: 2rem; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 2rem; }
    .hero-stats { flex-direction: column; gap: 16px; }
    .hero-stat-divider { width: 40px; height: 1px; }
    .app-grid { grid-template-columns: 1fr; }
    .contact-form-wrapper { padding: 24px; }
    .about-badges { flex-direction: column; }
}