/* ===== 全局样式 ===== */
:root {
    --green-900: #041f1a;
    --green-800: #0a3d2e;
    --green-700: #0e4d38;
    --green-600: #1a5d44;
    --green-500: #2a7d5a;
    --green-400: #3a9d70;
    --green-300: #50c080;
    --green-200: #70e0a0;
    --green-100: #a0f0c0;
    --green-glow: #00ff88;
    --green-glow-dim: #00cc70;
    --dark-bg: #030f0d;
    --card-bg: #0a2d20;
    --card-bg-hover: #0e3a28;
    --text-primary: #e0f5e8;
    --text-secondary: #80b0a0;
    --text-muted: #506858;
    --border-color: #1a4d38;
    --border-glow: rgba(0, 255, 136, 0.3);
    --font-display: 'Orbitron', sans-serif;
    --font-body: 'Noto Sans SC', sans-serif;
}

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

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

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

/* ===== 粒子画布 ===== */
#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ===== 装饰层 ===== */
.grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(0,255,136,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,255,136,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    z-index: 1;
    pointer-events: none;
}

.scan-line {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--green-glow), transparent);
    z-index: 100;
    animation: scanMove 8s ease-in-out infinite;
    pointer-events: none;
    opacity: 0.4;
}

@keyframes scanMove {
    0% { top: 0; }
    50% { top: 100%; }
    100% { top: 0; }
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 2rem;
    transition: all 0.4s ease;
    background: transparent;
}

.navbar.scrolled {
    background: rgba(4, 31, 26, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 0.6rem 2rem;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    font-size: 1.5rem;
    animation: logoPulse 2s ease-in-out infinite;
}

@keyframes logoPulse {
    0%, 100% { transform: scale(1); filter: drop-shadow(0 0 4px var(--green-glow)); }
    50% { transform: scale(1.1); filter: drop-shadow(0 0 12px var(--green-glow)); }
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--green-glow);
    letter-spacing: 2px;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.9rem;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.3rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--green-glow);
    transition: width 0.3s ease;
}

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

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.nav-hamburger {
    display: none;
    cursor: pointer;
    gap: 5px;
    flex-direction: column;
}

.nav-hamburger span {
    width: 25px;
    height: 2px;
    background: var(--green-glow);
    transition: all 0.3s ease;
}

/* ===== Hero 区域 ===== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6rem 2rem 2rem;
    position: relative;
    z-index: 2;
    gap: 4rem;
    max-width: 1400px;
    margin: 0 auto;
}

.hero-content {
    flex: 1;
    max-width: 650px;
}

.hero-badge {
    display: inline-block;
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid rgba(0, 255, 136, 0.3);
    padding: 0.5rem 1.2rem;
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--green-glow);
    letter-spacing: 2px;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.hero-title .typing-text {
    display: inline;
}

.hero-subtitle {
    font-size: 1.4rem;
    color: var(--green-200);
    margin-bottom: 0.8rem;
    letter-spacing: 4px;
}

.hero-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.btn-primary {
    position: relative;
    display: inline-flex;
    align-items: center;
    padding: 0.9rem 2.5rem;
    background: linear-gradient(135deg, var(--green-600), var(--green-500));
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    letter-spacing: 2px;
    transition: all 0.3s ease;
    overflow: hidden;
    border: 1px solid var(--green-400);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 255, 136, 0.3);
}

.btn-primary .btn-glow {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0,255,136,0.3), transparent);
    animation: btnGlowMove 3s ease-in-out infinite;
}

@keyframes btnGlowMove {
    0% { left: -100%; }
    50% { left: 100%; }
    100% { left: -100%; }
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    padding: 0.9rem 2.5rem;
    background: transparent;
    color: var(--green-glow);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    letter-spacing: 2px;
    border: 1px solid var(--green-400);
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: rgba(0, 255, 136, 0.1);
    transform: translateY(-2px);
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

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

.stat-number {
    font-family: var(--font-display);
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--green-glow);
}

.stat-unit {
    font-family: var(--font-display);
    font-size: 1.2rem;
    color: var(--green-glow-dim);
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    letter-spacing: 1px;
    margin-top: 0.3rem;
}

/* Hero 六边形视觉 */
.hero-visual {
    flex: 1;
    max-width: 500px;
    position: relative;
}

.hex-grid {
    position: relative;
    width: 400px;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hex {
    position: absolute;
    width: 90px;
    height: 90px;
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    background: var(--card-bg);
    border: none;
    transition: all 0.5s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hex::before {
    content: '';
    position: absolute;
    inset: -2px;
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    background: linear-gradient(135deg, var(--green-400), var(--green-glow));
    z-index: -1;
    opacity: 0.5;
}

.hex:hover {
    transform: scale(1.15);
    background: var(--card-bg-hover);
}

.hex:hover::before {
    opacity: 1;
}

.hex-inner {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--green-glow);
    letter-spacing: 1px;
    text-align: center;
}

.hex-1 { top: 0; left: 50%; transform: translateX(-50%); animation: hexFloat 4s ease-in-out infinite; }
.hex-2 { top: 40px; left: 20%; animation: hexFloat 4.5s ease-in-out infinite 0.5s; }
.hex-3 { top: 40px; left: 68%; animation: hexFloat 5s ease-in-out infinite 1s; }
.hex-4 { top: 140px; left: 5%; animation: hexFloat 3.5s ease-in-out infinite 0.3s; }
.hex-5 { top: 140px; left: 50%; transform: translateX(-50%); animation: hexFloat 4s ease-in-out infinite 0.8s; }
.hex-6 { top: 140px; left: 73%; animation: hexFloat 5.5s ease-in-out infinite 1.2s; }
.hex-7 { top: 230px; left: 30%; animation: hexFloat 3.8s ease-in-out infinite 0.6s; }

@keyframes hexFloat {
    0%, 100% { transform: translateY(0) translateX(var(--tx, 0)); }
    50% { transform: translateY(-15px) translateX(var(--tx, 0)); }
}

.hex-1 { --tx: -50%; }
.hex-5 { --tx: -50%; }

/* ===== 通用 Section 样式 ===== */
.section {
    padding: 6rem 2rem;
    position: relative;
    z-index: 2;
}

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

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    font-family: var(--font-display);
    font-size: 0.75rem;
    letter-spacing: 4px;
    color: var(--green-glow);
    background: rgba(0,255,136,0.1);
    padding: 0.4rem 1.5rem;
    border-radius: 50px;
    border: 1px solid rgba(0,255,136,0.2);
    display: inline-block;
    margin-bottom: 1rem;
}

.section-title {
    font-family: var(--font-body);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.section-divider {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--green-glow), var(--green-400));
    margin: 0 auto;
    border-radius: 2px;
}

/* ===== 关于我们 ===== */
.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
}

.about-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--green-glow), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.about-card:hover {
    transform: translateY(-8px);
    border-color: var(--green-400);
    box-shadow: 0 20px 40px rgba(0, 255, 136, 0.1);
}

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

.about-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
    filter: drop-shadow(0 0 8px rgba(0,255,136,0.5));
}

.about-card h3 {
    font-size: 1.3rem;
    color: var(--green-glow);
    margin-bottom: 0.8rem;
    font-family: var(--font-display);
    letter-spacing: 1px;
}

.about-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 0.95rem;
}

/* 时间线 */
.about-timeline {
    position: relative;
    padding-left: 2rem;
}

.about-timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--green-400), var(--green-glow), var(--green-400));
}

.timeline-item {
    position: relative;
    padding-left: 2rem;
    padding-bottom: 2rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.timeline-year {
    font-family: var(--font-display);
    font-size: 1rem;
    color: var(--green-glow);
    font-weight: 700;
    min-width: 50px;
}

.timeline-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--green-400);
    border: 2px solid var(--green-glow);
    position: absolute;
    left: -6px;
    top: 4px;
    transition: all 0.3s ease;
}

.timeline-dot.active {
    background: var(--green-glow);
    box-shadow: 0 0 15px rgba(0,255,136,0.6);
    animation: dotPulse 2s ease-in-out infinite;
}

@keyframes dotPulse {
    0%, 100% { box-shadow: 0 0 8px rgba(0,255,136,0.4); }
    50% { box-shadow: 0 0 20px rgba(0,255,136,0.8); }
}

.timeline-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ===== 服务区域 ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.service-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.5s ease;
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--green-glow-dim);
    box-shadow: 0 30px 60px rgba(0, 255, 136, 0.12);
}

.service-icon-wrap {
    position: relative;
    margin-bottom: 1.5rem;
}

.service-icon {
    font-size: 2.5rem;
    filter: drop-shadow(0 0 10px rgba(0,255,136,0.4));
}

.service-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60px;
    height: 60px;
    background: radial-gradient(circle, rgba(0,255,136,0.2), transparent);
    transform: translate(-50%, -50%);
    border-radius: 50%;
    animation: glowPulse 3s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
    50% { transform: translate(-50%, -50%) scale(1.5); opacity: 0.2; }
}

.service-card h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 0.8rem;
    letter-spacing: 1px;
}

.service-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.service-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.service-tags span {
    background: rgba(0,255,136,0.1);
    color: var(--green-glow-dim);
    padding: 0.3rem 0.8rem;
    border-radius: 50px;
    font-size: 0.75rem;
    letter-spacing: 1px;
    border: 1px solid rgba(0,255,136,0.15);
}

/* ===== 产品矩阵 ===== */
.products-showcase {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}

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

.product-screen {
    width: 100%;
    height: 200px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    position: relative;
    overflow: hidden;
    margin-bottom: 1.5rem;
    transition: all 0.4s ease;
}

.product-screen:hover {
    border-color: var(--green-glow-dim);
    box-shadow: 0 0 30px rgba(0,255,136,0.15);
}

.product-ui-bar {
    height: 3px;
    background: linear-gradient(90deg, var(--green-glow), var(--green-400), var(--green-glow));
    animation: barPulse 2s ease-in-out infinite;
}

@keyframes barPulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

.product-ui-content {
    height: calc(100% - 3px);
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 柱状图 */
.product-ui-chart {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    height: 100%;
    width: 100%;
}

.chart-bar {
    flex: 1;
    background: linear-gradient(180deg, var(--green-glow), var(--green-600));
    border-radius: 4px 4px 0 0;
    animation: chartGrow 2s ease-out infinite alternate;
    opacity: 0.8;
}

@keyframes chartGrow {
    0% { transform: scaleY(0.6); opacity: 0.5; }
    100% { transform: scaleY(1); opacity: 0.9; }
}

/* 网络图 */
.product-ui-network {
    width: 100%;
    height: 100%;
    position: relative;
}

.net-node {
    width: 12px;
    height: 12px;
    background: var(--green-glow);
    border-radius: 50%;
    position: absolute;
    animation: nodeBlink 3s ease-in-out infinite;
    box-shadow: 0 0 10px rgba(0,255,136,0.6);
}

.net-node.n1 { top: 20%; left: 30%; animation-delay: 0s; }
.net-node.n2 { top: 50%; left: 50%; animation-delay: 0.5s; }
.net-node.n3 { top: 30%; left: 70%; animation-delay: 1s; }
.net-node.n4 { top: 70%; left: 20%; animation-delay: 1.5s; }
.net-node.n5 { top: 60%; left: 80%; animation-delay: 2s; }

@keyframes nodeBlink {
    0%, 100% { opacity: 0.4; transform: scale(0.8); }
    50% { opacity: 1; transform: scale(1.2); }
}

.net-line {
    position: absolute;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--green-glow), transparent);
    opacity: 0.3;
    animation: linePulse 4s ease-in-out infinite;
}

.net-line.l1 { top: 35%; left: 30%; width: 40%; transform: rotate(20deg); }
.net-line.l2 { top: 55%; left: 20%; width: 50%; transform: rotate(-10deg); animation-delay: 1s; }
.net-line.l3 { top: 40%; left: 50%; width: 30%; transform: rotate(30deg); animation-delay: 2s; }
.net-line.l4 { top: 65%; left: 20%; width: 60%; transform: rotate(15deg); animation-delay: 3s; }

@keyframes linePulse {
    0%, 100% { opacity: 0.1; }
    50% { opacity: 0.5; }
}

/* 防护盾 */
.product-ui-shield {
    width: 100%;
    height: 100%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.shield-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid;
    animation: ringExpand 3s ease-in-out infinite;
}

.shield-ring.r1 {
    width: 60px; height: 60px;
    border-color: rgba(0,255,136,0.4);
    animation-delay: 0s;
}
.shield-ring.r2 {
    width: 100px; height: 100px;
    border-color: rgba(0,255,136,0.2);
    animation-delay: 0.5s;
}
.shield-ring.r3 {
    width: 140px; height: 140px;
    border-color: rgba(0,255,136,0.1);
    animation-delay: 1s;
}

@keyframes ringExpand {
    0%, 100% { transform: scale(0.8); opacity: 0.3; }
    50% { transform: scale(1.2); opacity: 0.8; }
}

.shield-core {
    width: 30px;
    height: 30px;
    background: var(--green-glow);
    border-radius: 50%;
    box-shadow: 0 0 20px rgba(0,255,136,0.6);
    animation: corePulse 2s ease-in-out infinite;
}

@keyframes corePulse {
    0%, 100% { transform: scale(1); box-shadow: 0 0 15px rgba(0,255,136,0.4); }
    50% { transform: scale(1.3); box-shadow: 0 0 30px rgba(0,255,136,0.8); }
}

.product-item h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    letter-spacing: 1px;
}

.product-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ===== 技术实力 ===== */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
}

.tech-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.4s ease;
}

.tech-card:hover {
    border-color: var(--green-glow-dim);
    transform: translateY(-5px);
}

.tech-meter {
    height: 8px;
    background: rgba(0,255,136,0.1);
    border-radius: 4px;
    margin-bottom: 1rem;
    overflow: hidden;
    position: relative;
}

.meter-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--green-600), var(--green-glow));
    border-radius: 4px;
    width: 0;
    transition: width 2s ease-out;
    position: relative;
}

.meter-fill span {
    position: absolute;
    right: 0;
    top: -25px;
    font-family: var(--font-display);
    font-size: 0.9rem;
    color: var(--green-glow);
    font-weight: 700;
}

.tech-card h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
    letter-spacing: 1px;
}

.tech-card p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.tech-stack {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
}

.tech-stack-title {
    font-family: var(--font-display);
    font-size: 1rem;
    color: var(--green-glow);
    letter-spacing: 2px;
    margin-bottom: 1.5rem;
    text-align: center;
}

.tech-icons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.tech-icon-item {
    background: rgba(0,255,136,0.08);
    border: 1px solid rgba(0,255,136,0.2);
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    font-size: 0.85rem;
    color: var(--green-200);
    font-family: var(--font-display);
    letter-spacing: 1px;
    transition: all 0.3s ease;
    cursor: default;
}

.tech-icon-item:hover {
    background: rgba(0,255,136,0.15);
    border-color: var(--green-glow);
    color: var(--green-glow);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,255,136,0.2);
}

/* ===== 联系我们 ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    padding: 1.5rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.contact-item:hover {
    border-color: var(--green-glow-dim);
    transform: translateX(5px);
}

.contact-icon {
    font-size: 1.5rem;
    filter: drop-shadow(0 0 6px rgba(0,255,136,0.3));
}

.contact-item h4 {
    font-family: var(--font-display);
    color: var(--green-glow);
    font-size: 0.85rem;
    letter-spacing: 1px;
    margin-bottom: 0.3rem;
}

.contact-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.contact-form {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-input {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-color);
    padding: 0.8rem 0;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: var(--font-body);
    outline: none;
    transition: border-color 0.3s ease;
}

.form-input:focus {
    border-color: var(--green-glow);
}

.form-input::placeholder {
    color: var(--text-muted);
}

.input-line {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--green-glow);
    transition: width 0.3s ease;
}

.form-input:focus + .input-line {
    width: 100%;
}

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

.btn-submit {
    width: 100%;
    position: relative;
    padding: 1rem;
    background: linear-gradient(135deg, var(--green-600), var(--green-500));
    border: 1px solid var(--green-400);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 2px;
    cursor: pointer;
    transition: all 0.3s ease;
    overflow: hidden;
    font-family: var(--font-body);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0,255,136,0.3);
}

.btn-submit .btn-glow {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0,255,136,0.3), transparent);
    animation: btnGlowMove 3s ease-in-out infinite;
}

/* ===== 页脚 ===== */
.footer {
    position: relative;
    z-index: 2;
    background: rgba(4, 15, 13, 0.95);
    border-top: 1px solid var(--border-color);
    padding: 4rem 2rem 2rem;
}

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

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand .logo-text {
    display: block;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.footer-brand .logo-icon {
    display: inline-block;
    font-size: 1.5rem;
    margin-right: 0.5rem;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 1rem;
}

.footer-links-group h4 {
    font-family: var(--font-display);
    color: var(--green-glow);
    font-size: 0.8rem;
    letter-spacing: 2px;
    margin-bottom: 1rem;
}

.footer-links-group a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* ===== 滚动动画 ===== */
.scroll-animate {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.scroll-animate.visible {
    opacity: 1;
    transform: translateY(0);
}

.scroll-animate.delay-1 { transition-delay: 0.15s; }
.scroll-animate.delay-2 { transition-delay: 0.3s; }
.scroll-animate.delay-3 { transition-delay: 0.45s; }
.scroll-animate.delay-4 { transition-delay: 0.6s; }
.scroll-animate.delay-5 { transition-delay: 0.75s; }

/* ===== 入场动画 ===== */
.animate-fade-in {
    animation: fadeIn 1s ease-out forwards;
}

.animate-slide-up {
    opacity: 0;
    transform: translateY(30px);
    animation: slideUp 1s ease-out forwards;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; }
.delay-4 { animation-delay: 0.8s; }

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

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

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .hero-section {
        flex-direction: column;
        text-align: center;
    }
    .hero-visual {
        max-width: 350px;
    }
    .hex-grid {
        width: 350px;
        height: 350px;
    }
    .hero-stats {
        justify-content: center;
    }
    .hero-actions {
        justify-content: center;
    }
    .about-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .products-showcase {
        grid-template-columns: repeat(2, 1fr);
    }
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .contact-grid {
        grid-template-columns: 1fr;
    }
    .footer-top {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(4, 31, 26, 0.95);
        backdrop-filter: blur(20px);
        padding: 1rem 2rem;
        flex-direction: column;
        gap: 1rem;
        border-bottom: 1px solid var(--border-color);
    }
    .nav-links.open {
        display: flex;
    }
    .nav-hamburger {
        display: flex;
    }
    .nav-hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .nav-hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    .nav-hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    .hero-title {
        font-size: 2rem;
    }
    .hero-subtitle {
        font-size: 1rem;
    }
    .about-grid {
        grid-template-columns: 1fr;
    }
    .services-grid {
        grid-template-columns: 1fr;
    }
    .products-showcase {
        grid-template-columns: 1fr;
    }
    .tech-grid {
        grid-template-columns: 1fr;
    }
    .hero-stats {
        gap: 1.5rem;
    }
    .stat-number {
        font-size: 1.5rem;
    }
    .section-title {
        font-size: 1.8rem;
    }
    .footer-top {
        grid-template-columns: 1fr;
    }
}