/* ============================================
   香港霓虹药业集团 - 霓虹赛博朋克风格
   Hong Kong Neon Pharma Group
   主样式文件 style.css
   ============================================ */

/* ============ CSS 变量定义 ============ */
:root {
    /* 极暗背景色 */
    --bg-darkest: #0a0a0f;
    --bg-dark: #12121f;
    --bg-card: #1a1a2e;
    --bg-overlay: rgba(10, 10, 15, 0.85);

    /* 霓虹色系 */
    --neon-cyan: #00ffff;
    --neon-magenta: #ff00ff;
    --neon-green: #00ff88;
    --neon-pink: #ff0080;

    /* 文字颜色 */
    --text-primary: #e0e0ff;
    --text-secondary: #a0a0c0;
    --text-muted: #606080;

    /* 字体 */
    --font-display: 'Orbitron', sans-serif;
    --font-body: 'Rajdhani', sans-serif;

    /* 霓虹光效 */
    --glow-cyan: 0 0 10px #00ffff, 0 0 20px #00ffff, 0 0 40px rgba(0, 255, 255, 0.5);
    --glow-magenta: 0 0 10px #ff00ff, 0 0 20px #ff00ff, 0 0 40px rgba(255, 0, 255, 0.5);
    --glow-green: 0 0 10px #00ff88, 0 0 20px #00ff88, 0 0 40px rgba(0, 255, 136, 0.5);

    /* 过渡 */
    --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ============ 全局重置 ============ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-darkest);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* 背景网格效果 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(0, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 1;
}

/* 全局扫描线效果 */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent 50%, rgba(0, 255, 255, 0.025) 50%);
    background-size: 100% 4px;
    pointer-events: none;
    z-index: 9999;
    animation: scanline 8s linear infinite;
}

@keyframes scanline {
    0% { background-position: 0 0; }
    100% { background-position: 0 100px; }
}

/* ============ 通用容器 ============ */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 2;
}

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

ul {
    list-style: none;
}

/* ============ 霓虹按钮 ============ */
.neon-btn {
    display: inline-block;
    padding: 14px 36px;
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--neon-cyan);
    background: transparent;
    border: 2px solid var(--neon-cyan);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    text-shadow: 0 0 8px var(--neon-cyan);
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.3), inset 0 0 15px rgba(0, 255, 255, 0.1);
    clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
}

.neon-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 255, 0.4), transparent);
    transition: left 0.5s;
}

.neon-btn:hover {
    background: rgba(0, 255, 255, 0.1);
    color: #fff;
    box-shadow: var(--glow-cyan);
    text-shadow: 0 0 12px #fff;
}

.neon-btn:hover::before {
    left: 100%;
}

/* ============ 模块1：导航栏 ============ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 255, 255, 0.2);
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(10, 10, 15, 0.95);
    border-bottom-color: var(--neon-cyan);
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.3);
}

.header-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo 样式 */
.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--neon-cyan);
}

.logo-icon {
    font-size: 28px;
    color: var(--neon-magenta);
    text-shadow: var(--glow-magenta);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.1); }
}

.logo-text {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 900;
    color: var(--neon-cyan);
    text-shadow: var(--glow-cyan);
    letter-spacing: 1px;
}

.logo-sub {
    font-family: var(--font-display);
    font-size: 9px;
    color: var(--text-secondary);
    letter-spacing: 3px;
    margin-left: 4px;
    border-left: 1px solid rgba(0, 255, 255, 0.3);
    padding-left: 8px;
}

/* 导航列表 */
.nav-list {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    display: block;
    padding: 8px 16px;
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 1px;
    color: var(--text-primary);
    text-transform: uppercase;
    position: relative;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--neon-cyan);
    box-shadow: var(--glow-cyan);
    transition: var(--transition);
    transform: translateX(-50%);
}

.nav-link:hover {
    color: var(--neon-cyan);
    text-shadow: 0 0 8px var(--neon-cyan);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 70%;
}

.nav-link.active {
    color: var(--neon-cyan);
}

.nav-cta {
    border: 1px solid var(--neon-magenta);
    color: var(--neon-magenta);
    clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
    text-shadow: 0 0 6px var(--neon-magenta);
}

.nav-cta:hover {
    background: rgba(255, 0, 255, 0.1);
    color: #fff;
    box-shadow: var(--glow-magenta);
}

.nav-cta::after {
    display: none;
}

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.hamburger span {
    width: 28px;
    height: 2px;
    background: var(--neon-cyan);
    box-shadow: 0 0 6px var(--neon-cyan);
    transition: var(--transition);
}

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

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

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

/* ============ 模块2：全屏轮播图 ============ */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
    scroll-snap-align: start;
}

.carousel {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(10, 10, 15, 0.85) 0%, rgba(18, 18, 31, 0.7) 100%);
}

.carousel-slide.active {
    opacity: 1;
    animation: slideIn 1s ease-in-out;
}

@keyframes slideIn {
    0% {
        opacity: 0;
        transform: scale(1.1);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.slide-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 0 24px;
    max-width: 900px;
}

/* 故障glitch标题 */
.slide-title {
    font-family: var(--font-display);
    font-size: clamp(36px, 7vw, 80px);
    font-weight: 900;
    color: var(--neon-cyan);
    text-shadow: var(--glow-cyan);
    margin-bottom: 24px;
    letter-spacing: 4px;
}

.glitch {
    position: relative;
}

.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.glitch::before {
    color: var(--neon-magenta);
    z-index: -1;
    animation: glitch-1 3s infinite;
}

.glitch::after {
    color: var(--neon-green);
    z-index: -2;
    animation: glitch-2 3s infinite;
}

@keyframes glitch-1 {
    0%, 100% { transform: translate(0); }
    20% { transform: translate(-3px, 2px); }
    40% { transform: translate(3px, -2px); }
    60% { transform: translate(-2px, -2px); }
    80% { transform: translate(2px, 2px); }
}

@keyframes glitch-2 {
    0%, 100% { transform: translate(0); }
    20% { transform: translate(3px, -2px); }
    40% { transform: translate(-3px, 2px); }
    60% { transform: translate(2px, 2px); }
    80% { transform: translate(-2px, -2px); }
}

.slide-desc {
    font-size: clamp(16px, 2vw, 22px);
    color: var(--text-primary);
    margin-bottom: 36px;
    letter-spacing: 1px;
    text-shadow: 0 0 8px rgba(0, 0, 0, 0.8);
}

/* 轮播控制点 */
.carousel-dots {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 16px;
    z-index: 3;
}

.dot {
    width: 12px;
    height: 12px;
    border: 2px solid var(--neon-cyan);
    background: transparent;
    cursor: pointer;
    transition: var(--transition);
    transform: rotate(45deg);
}

.dot.active {
    background: var(--neon-cyan);
    box-shadow: var(--glow-cyan);
    transform: rotate(45deg) scale(1.2);
}

.dot:hover {
    box-shadow: var(--glow-cyan);
}

/* 轮播箭头 */
.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(0, 255, 255, 0.1);
    border: 1px solid var(--neon-cyan);
    color: var(--neon-cyan);
    font-size: 20px;
    cursor: pointer;
    z-index: 3;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-arrow:hover {
    background: rgba(0, 255, 255, 0.3);
    box-shadow: var(--glow-cyan);
}

.carousel-arrow.prev {
    left: 24px;
}

.carousel-arrow.next {
    right: 24px;
}

/* 霓虹光带过渡 */
.neon-strip {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--neon-cyan), var(--neon-magenta), var(--neon-green), transparent);
    box-shadow: 0 0 20px var(--neon-cyan);
    z-index: 4;
    animation: stripFlow 3s linear infinite;
}

@keyframes stripFlow {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

/* ============ 通用区块 ============ */
.section {
    padding: 100px 0;
    position: relative;
    scroll-snap-align: start;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 14px;
    color: var(--neon-magenta);
    letter-spacing: 4px;
    margin-bottom: 12px;
    text-shadow: 0 0 8px var(--neon-magenta);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(32px, 5vw, 52px);
    font-weight: 900;
    color: var(--text-primary);
    letter-spacing: 4px;
    text-shadow: 0 0 15px rgba(0, 255, 255, 0.5);
    margin-bottom: 16px;
}

.title-line {
    width: 80px;
    height: 3px;
    margin: 0 auto;
    background: linear-gradient(90deg, var(--neon-cyan), var(--neon-magenta));
    box-shadow: 0 0 10px var(--neon-cyan);
}

/* ============ 模块3：关于我们 ============ */
.about {
    background: linear-gradient(180deg, var(--bg-darkest) 0%, var(--bg-dark) 100%);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-desc {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 40px;
    text-align: justify;
}

/* 统计数据网格 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.stat-item {
    text-align: center;
    padding: 24px 16px;
    background: rgba(0, 255, 255, 0.03);
    border: 1px solid rgba(0, 255, 255, 0.2);
    transition: var(--transition);
    position: relative;
}

.stat-item::before {
    content: '';
    position: absolute;
    top: -1px;
    left: -1px;
    width: 20px;
    height: 20px;
    border-top: 2px solid var(--neon-cyan);
    border-left: 2px solid var(--neon-cyan);
}

.stat-item::after {
    content: '';
    position: absolute;
    bottom: -1px;
    right: -1px;
    width: 20px;
    height: 20px;
    border-bottom: 2px solid var(--neon-magenta);
    border-right: 2px solid var(--neon-magenta);
}

.stat-item:hover {
    background: rgba(0, 255, 255, 0.08);
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.3);
    transform: translateY(-4px);
}

.stat-number {
    font-family: var(--font-display);
    font-size: 42px;
    font-weight: 900;
    color: var(--neon-cyan);
    text-shadow: var(--glow-cyan);
}

.stat-suffix {
    font-family: var(--font-display);
    font-size: 18px;
    color: var(--neon-magenta);
    margin-left: 4px;
}

.stat-label {
    display: block;
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 8px;
    letter-spacing: 2px;
}

/* 关于图片 */
.about-image {
    position: relative;
}

.image-frame {
    width: 100%;
    height: 420px;
    background-size: cover;
    background-position: center;
    border: 1px solid var(--neon-cyan);
    box-shadow: var(--glow-cyan), inset 0 0 30px rgba(0, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.image-frame::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, transparent 40%, rgba(0, 255, 255, 0.1) 100%);
}

.image-scan {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
    box-shadow: 0 0 15px var(--neon-cyan);
    animation: imageScan 4s linear infinite;
}

@keyframes imageScan {
    0% { top: 0; }
    100% { top: 100%; }
}

/* ============ 模块4：服务介绍 ============ */
.services {
    background: var(--bg-dark);
}

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

.service-card {
    padding: 36px 24px;
    background: var(--bg-card);
    border: 1px solid rgba(0, 255, 255, 0.2);
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, transparent, rgba(0, 255, 255, 0.05), transparent);
    transition: left 0.6s;
}

.service-card:hover {
    border-color: var(--neon-cyan);
    box-shadow: var(--glow-cyan);
    transform: translateY(-8px);
}

.service-card:hover::before {
    left: 100%;
}

.service-icon {
    font-size: 48px;
    margin-bottom: 20px;
    display: inline-block;
    filter: drop-shadow(0 0 10px var(--neon-cyan));
}

.service-title {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    color: var(--neon-cyan);
    margin-bottom: 12px;
    letter-spacing: 2px;
    text-shadow: 0 0 8px rgba(0, 255, 255, 0.5);
}

.service-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.service-id {
    font-family: var(--font-display);
    font-size: 11px;
    color: var(--neon-magenta);
    letter-spacing: 2px;
    padding: 4px 12px;
    border: 1px solid rgba(255, 0, 255, 0.4);
    display: inline-block;
}

/* ============ 模块5：客户案例 ============ */
.cases {
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-darkest) 100%);
}

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

.case-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 0, 255, 0.2);
    overflow: hidden;
    transition: var(--transition);
}

.case-card:hover {
    border-color: var(--neon-magenta);
    box-shadow: var(--glow-magenta);
    transform: translateY(-6px);
}

.case-image {
    width: 100%;
    aspect-ratio: 1 / 1;
    background-size: cover;
    background-position: center;
    position: relative;
    transition: var(--transition);
}

.case-card:hover .case-image {
    filter: brightness(1.2) saturate(1.3);
}

.case-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 60%;
    background: linear-gradient(to top, var(--bg-card), transparent);
}

.case-info {
    padding: 20px;
}

.case-id {
    font-family: var(--font-display);
    font-size: 11px;
    color: var(--neon-green);
    letter-spacing: 2px;
    text-shadow: 0 0 6px var(--neon-green);
}

.case-title {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 8px 0;
    letter-spacing: 1px;
}

.case-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ============ 模块6：新闻资讯 ============ */
.news {
    background: var(--bg-darkest);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.news-card {
    background: var(--bg-card);
    border: 1px solid rgba(0, 255, 136, 0.2);
    padding: 28px;
    transition: var(--transition);
    display: flex;
    gap: 20px;
    position: relative;
    overflow: hidden;
}

.news-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--neon-green);
    box-shadow: var(--glow-green);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform 0.4s;
}

.news-card:hover {
    border-color: var(--neon-green);
    box-shadow: var(--glow-green);
    transform: translateX(4px);
}

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

.news-date {
    flex-shrink: 0;
    text-align: center;
    padding: 12px 8px;
    border: 1px solid rgba(0, 255, 136, 0.3);
    background: rgba(0, 255, 136, 0.05);
    min-width: 70px;
}

.news-day {
    display: block;
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 900;
    color: var(--neon-green);
    text-shadow: 0 0 8px var(--neon-green);
    line-height: 1;
}

.news-month {
    display: block;
    font-family: var(--font-display);
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 4px;
    letter-spacing: 1px;
}

.news-body {
    flex: 1;
}

.news-tag {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 10px;
    color: var(--neon-cyan);
    letter-spacing: 2px;
    padding: 2px 8px;
    border: 1px solid rgba(0, 255, 255, 0.4);
    margin-bottom: 10px;
}

.news-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
    line-height: 1.5;
}

.news-excerpt {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 12px;
}

.news-link {
    font-family: var(--font-display);
    font-size: 12px;
    color: var(--neon-green);
    letter-spacing: 1px;
}

.news-link:hover {
    text-shadow: 0 0 8px var(--neon-green);
}

/* ============ 模块7：FAQ ============ */
.faq {
    background: var(--bg-dark);
}

.faq-list {
    max-width: 860px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid rgba(0, 255, 255, 0.2);
    margin-bottom: 16px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item.active {
    border-color: var(--neon-cyan);
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.2);
}

.faq-question {
    width: 100%;
    padding: 22px 28px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 17px;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--neon-cyan);
}

.faq-q-text {
    flex: 1;
    padding-right: 16px;
}

.faq-icon {
    font-size: 24px;
    color: var(--neon-cyan);
    transition: transform 0.3s;
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
    color: var(--neon-magenta);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    padding: 0 28px;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 0 28px 22px;
}

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 15px;
    border-left: 2px solid var(--neon-cyan);
    padding-left: 16px;
}

/* ============ 模块8：联系我们 ============ */
.contact {
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-darkest) 100%);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
    align-items: start;
}

/* 联系信息 */
.contact-info {
    padding: 36px;
    background: var(--bg-card);
    border: 1px solid rgba(0, 255, 255, 0.2);
    position: relative;
}

.contact-info::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 30px;
    height: 30px;
    border-top: 2px solid var(--neon-cyan);
    border-left: 2px solid var(--neon-cyan);
}

.contact-info::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 30px;
    height: 30px;
    border-bottom: 2px solid var(--neon-magenta);
    border-right: 2px solid var(--neon-magenta);
}

.contact-subtitle {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
    color: var(--neon-cyan);
    text-shadow: 0 0 10px var(--neon-cyan);
    margin-bottom: 4px;
    letter-spacing: 1px;
}

.contact-en {
    font-family: var(--font-display);
    font-size: 12px;
    color: var(--text-secondary);
    letter-spacing: 2px;
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(0, 255, 255, 0.15);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

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

.detail-icon {
    font-size: 22px;
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 255, 255, 0.05);
    border: 1px solid rgba(0, 255, 255, 0.2);
}

.detail-label {
    display: block;
    font-family: var(--font-display);
    font-size: 11px;
    color: var(--neon-magenta);
    letter-spacing: 2px;
    margin-bottom: 4px;
}

.detail-value {
    display: block;
    font-size: 14px;
    color: var(--text-primary);
    line-height: 1.5;
}

/* 联系表单 */
.contact-form {
    padding: 36px;
    background: var(--bg-card);
    border: 1px solid rgba(255, 0, 255, 0.2);
}

.form-group {
    margin-bottom: 22px;
    position: relative;
}

.form-group label {
    display: block;
    font-family: var(--font-display);
    font-size: 12px;
    color: var(--neon-cyan);
    letter-spacing: 2px;
    margin-bottom: 8px;
}

.required {
    color: var(--neon-magenta);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-darkest);
    border: 1px solid rgba(0, 255, 255, 0.2);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 15px;
    transition: var(--transition);
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--neon-cyan);
    box-shadow: 0 0 12px rgba(0, 255, 255, 0.3);
    background: rgba(0, 255, 255, 0.03);
}

.form-group input.error,
.form-group textarea.error {
    border-color: var(--neon-magenta);
    box-shadow: 0 0 12px rgba(255, 0, 255, 0.3);
}

.error-msg {
    display: block;
    font-size: 12px;
    color: var(--neon-magenta);
    margin-top: 6px;
    min-height: 16px;
    text-shadow: 0 0 6px rgba(255, 0, 255, 0.5);
}

.form-submit {
    width: 100%;
    margin-top: 8px;
    clip-path: none;
    border: 2px solid var(--neon-green);
    color: var(--neon-green);
    text-shadow: 0 0 8px var(--neon-green);
    box-shadow: 0 0 15px rgba(0, 255, 136, 0.3);
}

.form-submit:hover {
    background: rgba(0, 255, 136, 0.1);
    box-shadow: var(--glow-green);
    color: #fff;
}

.form-success {
    display: none;
    margin-top: 16px;
    padding: 14px;
    text-align: center;
    color: var(--neon-green);
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid var(--neon-green);
    font-size: 14px;
    text-shadow: 0 0 8px var(--neon-green);
}

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============ 模块9：页脚 + 友情链接 ============ */
.footer {
    background: var(--bg-darkest);
    border-top: 1px solid rgba(0, 255, 255, 0.2);
    padding: 60px 0 30px;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--neon-cyan), var(--neon-magenta), var(--neon-green), transparent);
    box-shadow: 0 0 15px var(--neon-cyan);
}

.footer-links {
    text-align: center;
    margin-bottom: 40px;
}

.footer-title {
    font-family: var(--font-display);
    font-size: 16px;
    color: var(--neon-cyan);
    letter-spacing: 3px;
    margin-bottom: 20px;
    text-shadow: 0 0 8px var(--neon-cyan);
}

.links-list {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px 32px;
}

.links-list a {
    font-size: 14px;
    color: var(--text-secondary);
    padding: 6px 16px;
    border: 1px solid rgba(0, 255, 255, 0.15);
    transition: var(--transition);
}

.links-list a:hover {
    color: var(--neon-cyan);
    border-color: var(--neon-cyan);
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.3);
    text-shadow: 0 0 6px var(--neon-cyan);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(0, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 6px;
    letter-spacing: 1px;
}

.footer-addr {
    font-size: 12px !important;
}

/* ============ 返回顶部 ============ */
.back-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: rgba(0, 255, 255, 0.1);
    border: 1px solid var(--neon-cyan);
    color: var(--neon-cyan);
    font-size: 24px;
    cursor: pointer;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.back-top:hover {
    background: rgba(0, 255, 255, 0.3);
    box-shadow: var(--glow-cyan);
    transform: translateY(-4px);
}

/* ============ 滚动揭示动画 ============ */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ============ 响应式设计 ============ */

/* 平板 (≤992px) */
@media (max-width: 992px) {
    .section {
        padding: 70px 0;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

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

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

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .image-frame {
        height: 320px;
    }
}

/* 移动端 (≤768px) */
@media (max-width: 768px) {
    /* 隐藏桌面导航，显示汉堡菜单 */
    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 75%;
        max-width: 320px;
        height: 100vh;
        background: rgba(10, 10, 15, 0.98);
        backdrop-filter: blur(20px);
        border-left: 1px solid var(--neon-cyan);
        box-shadow: -10px 0 30px rgba(0, 255, 255, 0.2);
        transition: right 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        padding-top: 80px;
        z-index: 999;
    }

    .nav.active {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 0 20px;
    }

    .nav-list li {
        border-bottom: 1px solid rgba(0, 255, 255, 0.1);
    }

    .nav-link {
        padding: 16px 12px;
        font-size: 15px;
        border-bottom: none;
    }

    .nav-cta {
        margin-top: 16px;
        text-align: center;
    }

    .hamburger {
        display: flex;
    }

    .logo-sub {
        display: none;
    }

    /* 轮播箭头 */
    .carousel-arrow {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }

    .carousel-arrow.prev {
        left: 12px;
    }

    .carousel-arrow.next {
        right: 12px;
    }

    /* 统计数据 */
    .stats-grid {
        grid-template-columns: 1fr;
    }

    /* 服务和案例 */
    .services-grid,
    .cases-slider {
        grid-template-columns: 1fr;
    }

    /* 表单 */
    .contact-info,
    .contact-form {
        padding: 24px;
    }

    .back-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
    }
}

/* 小屏手机 (≤480px) */
@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .section {
        padding: 56px 0;
    }

    .slide-title {
        letter-spacing: 2px;
    }

    .slide-desc {
        font-size: 15px;
    }

    .stat-number {
        font-size: 34px;
    }

    .news-card {
        flex-direction: column;
        gap: 14px;
    }

    .news-date {
        display: flex;
        align-items: center;
        gap: 12px;
        min-width: 0;
    }

    .links-list {
        flex-direction: column;
        align-items: center;
    }
}