/* ============================================
   企业科技高端官网 H5 - 主样式表
   科技蓝 + 深空黑 + 极简轻奢
   ============================================ */

/* ---------- CSS 变量 ---------- */
:root {
    --color-primary: #0a84ff;
    --color-cyan: #00d4ff;
    --color-cyan-light: #5ee7df;
    --color-bg: #0a0e1a;
    --color-bg-2: #0f1424;
    --color-bg-3: #1a1f2e;
    --color-card: rgba(20, 25, 40, 0.6);
    --color-text: #e8edf5;
    --color-text-2: #a8b5cc;
    --color-text-3: #7a8aa8;
    --color-border: rgba(0, 212, 255, 0.18);
    --color-border-strong: rgba(0, 212, 255, 0.4);
    --gradient-primary: linear-gradient(135deg, #0a84ff 0%, #00d4ff 100%);
    --gradient-cyan: linear-gradient(90deg, #00d4ff, #5ee7df);
    --gradient-bg: linear-gradient(180deg, #0a0e1a 0%, #0f1424 100%);
    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.35);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
    --radius: 4px;
    --radius-lg: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font: "Microsoft YaHei", "PingFang SC", "Source Han Sans CN", -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ---------- 全局 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    font-size: 15px;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; display: block; }
button, input, textarea, select { font-family: inherit; outline: none; }
section { position: relative; }
::selection { background: var(--color-cyan); color: var(--color-bg); }

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

/* ---------- 通用排版 ---------- */
.section { padding: 100px 0; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-tag {
    display: inline-block;
    padding: 4px 16px;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    color: var(--color-cyan);
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 16px;
}
.section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 16px;
    letter-spacing: 1px;
}
.section-title .accent {
    background: var(--gradient-cyan);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.section-desc {
    color: var(--color-text-2);
    font-size: 15px;
    max-width: 720px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ---------- 顶部导航 ---------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    background: rgba(10, 14, 26, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}
.navbar.scrolled {
    padding: 14px 0;
    background: rgba(10, 14, 26, 0.92);
    border-bottom-color: var(--color-border);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; }
.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: 1px;
}
.nav-logo .logo-mark {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 8px;
    color: #fff;
    font-weight: 800;
    font-size: 18px;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
}
.nav-logo img { width: 36px; height: 36px; border-radius: 8px; object-fit: cover; }
.nav-logo .accent { color: var(--color-cyan); }

.nav-menu { display: flex; align-items: center; gap: 32px; list-style: none; }
.nav-menu a {
    color: var(--color-text-2);
    font-size: 14px;
    font-weight: 500;
    position: relative;
    padding: 4px 0;
}
.nav-menu a::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-cyan);
    transition: width 0.3s;
}
.nav-menu a:hover { color: var(--color-text); }
.nav-menu a:hover::after { width: 100%; }
.nav-cta {
    padding: 8px 20px;
    background: var(--gradient-primary);
    color: #fff !important;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 600;
}
.nav-cta:hover { box-shadow: 0 0 20px rgba(0, 212, 255, 0.6); transform: translateY(-1px); }
.nav-cta::after { display: none; }

.nav-toggle {
    display: none;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    cursor: pointer;
    position: relative;
}
.nav-toggle span {
    position: absolute;
    left: 4px;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
}
.nav-toggle span:nth-child(1) { top: 8px; }
.nav-toggle span:nth-child(2) { top: 15px; }
.nav-toggle span:nth-child(3) { top: 22px; }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg); top: 15px; }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg); top: 15px; }

/* ---------- Hero Banner ---------- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: radial-gradient(ellipse at top, #0f1830 0%, #0a0e1a 60%);
}
#particle-canvas {
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(0, 212, 255, 0.15), transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(94, 231, 223, 0.1), transparent 50%);
    z-index: 2;
    pointer-events: none;
}
.hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    z-index: 2;
    pointer-events: none;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}
.hero .container { position: relative; z-index: 3; text-align: center; }
.hero-tag {
    display: inline-block;
    padding: 6px 18px;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid var(--color-border-strong);
    border-radius: 50px;
    color: var(--color-cyan);
    font-size: 12px;
    letter-spacing: 3px;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.1s both;
}
.hero-title {
    font-size: 64px;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: 2px;
    animation: fadeInUp 0.8s ease 0.3s both;
}
.hero-title .accent {
    background: var(--gradient-cyan);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 60px rgba(0, 212, 255, 0.5);
}
.hero-subtitle {
    font-size: 18px;
    color: var(--color-text-2);
    max-width: 720px;
    margin: 0 auto 40px;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.5s both;
}
.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    animation: fadeInUp 0.8s ease 0.7s both;
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}
.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 20px rgba(10, 132, 255, 0.3);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.6);
}
.btn-outline {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border-strong);
}
.btn-outline:hover {
    background: rgba(0, 212, 255, 0.08);
    border-color: var(--color-cyan);
    color: var(--color-cyan);
}
.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    color: var(--color-text-3);
    font-size: 11px;
    letter-spacing: 2px;
    text-align: center;
    animation: bounce 2s infinite;
}
.hero-scroll::after {
    content: "";
    display: block;
    width: 1px;
    height: 30px;
    background: var(--color-cyan);
    margin: 8px auto 0;
    animation: scroll-line 2s infinite;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}
@keyframes scroll-line {
    0% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
    51% { transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- 企业优势 ---------- */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.advantage-card {
    padding: 36px 28px;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(8px);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.advantage-card::before {
    content: "";
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-cyan), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}
.advantage-card:hover {
    transform: translateY(-6px);
    border-color: var(--color-border-strong);
    box-shadow: var(--shadow-glow);
}
.advantage-card:hover::before { opacity: 1; }
.advantage-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    margin-bottom: 20px;
    transition: var(--transition);
}
.advantage-card:hover .advantage-icon {
    background: var(--gradient-primary);
    transform: scale(1.05);
}
.advantage-icon svg { width: 28px; height: 28px; stroke: var(--color-cyan); transition: var(--transition); }
.advantage-card:hover .advantage-icon svg { stroke: #fff; }
.advantage-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--color-text);
}
.advantage-desc {
    color: var(--color-text-2);
    font-size: 14px;
    line-height: 1.7;
}

/* ---------- 关于我们 ---------- */
.about { background: var(--color-bg-2); }
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.about-text h3 {
    font-size: 28px;
    margin-bottom: 20px;
    line-height: 1.4;
}
.about-text p {
    color: var(--color-text-2);
    margin-bottom: 16px;
    line-height: 1.9;
}
.about-text .philosophy {
    padding: 20px;
    background: rgba(0, 212, 255, 0.05);
    border-left: 3px solid var(--color-cyan);
    border-radius: 0 8px 8px 0;
    color: var(--color-cyan-light);
    font-style: italic;
    margin-top: 20px;
}
.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.about-stat {
    padding: 32px 24px;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
}
.about-stat:hover {
    border-color: var(--color-border-strong);
    transform: translateY(-4px);
}
.about-stat-value {
    font-size: 40px;
    font-weight: 800;
    background: var(--gradient-cyan);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
    line-height: 1;
}
.about-stat-label {
    color: var(--color-text-2);
    font-size: 13px;
    letter-spacing: 1px;
}

/* ---------- 业务产品 ---------- */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.product-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
}
.product-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-border-strong);
    box-shadow: var(--shadow-glow);
}
.product-img {
    height: 200px;
    background: linear-gradient(135deg, #0f1830 0%, #1a2340 100%);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}
.product-img img { width: 100%; height: 100%; object-fit: cover; }
.product-img-fallback {
    font-size: 60px;
    color: var(--color-cyan);
    opacity: 0.3;
    font-weight: 800;
}
.product-card:hover .product-img img { transform: scale(1.05); }
.product-body { padding: 24px; }
.product-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--color-text);
}
.product-desc {
    color: var(--color-text-2);
    font-size: 13px;
    line-height: 1.7;
}
.product-tag {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 3px 10px;
    background: rgba(0, 212, 255, 0.15);
    border: 1px solid var(--color-border-strong);
    border-radius: 50px;
    font-size: 11px;
    color: var(--color-cyan);
    backdrop-filter: blur(8px);
}

/* ---------- 解决方案 ---------- */
.solutions { background: var(--color-bg-2); }
.solutions-list { display: flex; flex-direction: column; gap: 40px; }
.solution-item {
    display: grid;
    grid-template-columns: 80px 1fr 1fr;
    gap: 40px;
    align-items: center;
    padding: 32px;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}
.solution-item:hover {
    border-color: var(--color-border-strong);
    transform: translateX(8px);
}
.solution-item:nth-child(even) { grid-template-columns: 1fr 1fr 80px; }
.solution-item:nth-child(even) .solution-num { order: 3; text-align: right; }
.solution-num {
    font-size: 60px;
    font-weight: 800;
    background: var(--gradient-cyan);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    opacity: 0.6;
}
.solution-content h3 {
    font-size: 22px;
    margin-bottom: 12px;
    color: var(--color-text);
}
.solution-content p {
    color: var(--color-text-2);
    line-height: 1.8;
    font-size: 14px;
}
.solution-visual {
    height: 160px;
    background: linear-gradient(135deg, #0f1830 0%, #1a2340 100%);
    border-radius: 8px;
    border: 1px solid var(--color-border);
    overflow: hidden;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}
.solution-visual img { width: 100%; height: 100%; object-fit: cover; }
.solution-visual-icon {
    font-size: 48px;
    color: var(--color-cyan);
    opacity: 0.4;
}

/* ---------- 新闻动态 ---------- */
.news-list { display: flex; flex-direction: column; gap: 16px; }
.news-item {
    display: grid;
    grid-template-columns: 120px 1fr auto;
    gap: 24px;
    padding: 24px;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    align-items: center;
}
.news-item:hover {
    border-color: var(--color-border-strong);
    background: rgba(0, 212, 255, 0.04);
    transform: translateX(4px);
}
.news-date {
    text-align: center;
    padding: 12px;
    background: rgba(0, 212, 255, 0.06);
    border-radius: 8px;
    border: 1px solid var(--color-border);
}
.news-date .day {
    font-size: 28px;
    font-weight: 800;
    color: var(--color-cyan);
    line-height: 1;
}
.news-date .month {
    font-size: 11px;
    color: var(--color-text-3);
    margin-top: 4px;
}
.news-content h3 {
    font-size: 17px;
    margin-bottom: 8px;
    color: var(--color-text);
    transition: var(--transition);
}
.news-item:hover .news-content h3 { color: var(--color-cyan); }
.news-content p {
    color: var(--color-text-2);
    font-size: 13px;
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-arrow {
    color: var(--color-text-3);
    font-size: 20px;
    transition: var(--transition);
}
.news-item:hover .news-arrow { color: var(--color-cyan); transform: translateX(4px); }

/* ---------- 联系我们 ---------- */
.contact { background: var(--color-bg-2); }
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}
.contact-info-card {
    padding: 36px;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}
.contact-info-card h3 {
    font-size: 22px;
    margin-bottom: 24px;
    color: var(--color-text);
}
.contact-info-list { list-style: none; }
.contact-info-list li {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.contact-info-list li:last-child { border-bottom: none; }
.contact-info-icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid var(--color-border);
    border-radius: 8px;
}
.contact-info-icon svg { width: 18px; height: 18px; stroke: var(--color-cyan); }
.contact-info-text .label { color: var(--color-text-3); font-size: 12px; margin-bottom: 2px; }
.contact-info-text .value { color: var(--color-text); font-size: 15px; word-break: break-all; }

.contact-form {
    padding: 36px;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}
.contact-form h3 {
    font-size: 22px;
    margin-bottom: 24px;
    color: var(--color-text);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    color: var(--color-text-2);
    font-size: 13px;
    margin-bottom: 6px;
}
.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 14px;
    background: rgba(10, 14, 26, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius);
    color: var(--color-text);
    font-size: 14px;
    transition: var(--transition);
}
.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-cyan);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.12);
}
.form-group textarea { resize: vertical; min-height: 100px; }
.honeypot { display: none; }
.form-submit {
    width: 100%;
    padding: 14px;
    background: var(--gradient-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 8px;
}
.form-submit:hover { box-shadow: 0 0 24px rgba(0, 212, 255, 0.5); transform: translateY(-1px); }
.form-submit:disabled { opacity: 0.5; cursor: not-allowed; }

/* ---------- Footer ---------- */
.footer {
    background: #060912;
    padding: 60px 0 24px;
    border-top: 1px solid var(--color-border);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}
.footer-brand .nav-logo { margin-bottom: 16px; }
.footer-brand p {
    color: var(--color-text-3);
    font-size: 13px;
    line-height: 1.8;
    max-width: 320px;
}
.footer-col h4 {
    color: var(--color-text);
    font-size: 14px;
    margin-bottom: 16px;
    font-weight: 600;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a {
    color: var(--color-text-3);
    font-size: 13px;
}
.footer-col a:hover { color: var(--color-cyan); }
.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    color: var(--color-text-3);
    font-size: 12px;
    line-height: 1.8;
}
.footer-bottom a { color: var(--color-text-2); }
.footer-bottom a:hover { color: var(--color-cyan); }
.footer-icp {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 2px 10px;
    background: rgba(0, 212, 255, 0.06);
    border-radius: 50px;
    border: 1px solid var(--color-border);
}
.footer-links {
    margin-top: 8px;
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}
.footer-links span { color: var(--color-text-3); }

/* ---------- 通用动画 ---------- */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ---------- Toast 提示 ---------- */
.toast {
    position: fixed;
    top: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(-100px);
    padding: 12px 24px;
    background: rgba(20, 25, 40, 0.95);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius);
    color: var(--color-text);
    font-size: 14px;
    z-index: 9999;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: var(--shadow-glow);
    backdrop-filter: blur(12px);
}
.toast.show { transform: translateX(-50%) translateY(0); }
.toast.success { border-color: var(--color-cyan-light); color: var(--color-cyan-light); }
.toast.error { border-color: #ff6b6b; color: #ff6b6b; }

/* ---------- 移动端汉堡菜单 ---------- */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(10, 14, 26, 0.98);
    backdrop-filter: blur(16px);
    border-left: 1px solid var(--color-border);
    z-index: 999;
    padding: 80px 30px 30px;
    transition: right 0.4s ease;
}
.mobile-menu.active { right: 0; }
.mobile-menu ul { list-style: none; }
.mobile-menu li { margin-bottom: 8px; }
.mobile-menu a {
    display: block;
    padding: 14px 16px;
    color: var(--color-text-2);
    font-size: 15px;
    border-radius: var(--radius);
    transition: var(--transition);
}
.mobile-menu a:hover {
    background: rgba(0, 212, 255, 0.08);
    color: var(--color-cyan);
    padding-left: 24px;
}
.mobile-menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}
.mobile-menu-overlay.active { opacity: 1; visibility: visible; }

/* ---------- 法律文本页 ---------- */
.legal-page { padding: 140px 0 80px; min-height: 80vh; }
.legal-card {
    max-width: 900px;
    margin: 0 auto;
    padding: 48px;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}
.legal-card h1 {
    font-size: 30px;
    margin-bottom: 24px;
    text-align: center;
    background: var(--gradient-cyan);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.legal-card .meta {
    text-align: center;
    color: var(--color-text-3);
    font-size: 13px;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.legal-content { color: var(--color-text-2); line-height: 2; font-size: 14px; }
.legal-content h2 { color: var(--color-text); margin: 24px 0 12px; font-size: 17px; }
.legal-content p { margin-bottom: 12px; white-space: pre-wrap; }

/* ---------- 资质展示页 ---------- */
.qualifications-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.qualification-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}
.qualification-card:hover {
    border-color: var(--color-border-strong);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}
.qualification-img {
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, #0f1830 0%, #1a2340 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-cyan);
    opacity: 0.5;
    font-size: 14px;
}
.qualification-img img { width: 100%; height: 100%; object-fit: contain; background: #fff; }
.qualification-body { padding: 16px; text-align: center; }
.qualification-body h3 { font-size: 14px; color: var(--color-text); }

/* ---------- 新闻详情 ---------- */
.news-detail { padding: 140px 0 80px; }
.news-detail-card {
    max-width: 900px;
    margin: 0 auto;
    padding: 48px;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}
.news-detail-card h1 {
    font-size: 28px;
    margin-bottom: 16px;
    line-height: 1.4;
    color: var(--color-text);
}
.news-detail-meta {
    color: var(--color-text-3);
    font-size: 13px;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.news-detail-content { color: var(--color-text-2); line-height: 2; font-size: 15px; }
.news-detail-content p { margin-bottom: 16px; white-space: pre-wrap; }

/* ---------- 响应式适配 ---------- */
@media (max-width: 1023px) {
    .advantages-grid,
    .products-grid,
    .qualifications-grid { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .solution-item,
    .solution-item:nth-child(even) { grid-template-columns: 60px 1fr; }
    .solution-item:nth-child(even) .solution-num { order: 0; text-align: left; }
    .solution-visual { display: none; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .hero-title { font-size: 48px; }
}

@media (max-width: 767px) {
    .container { padding: 0 16px; }
    .section { padding: 60px 0; }
    .section-title { font-size: 26px; }
    .section-header { margin-bottom: 40px; }

    .nav-menu { display: none; }
    .nav-toggle { display: block; }
    .nav-cta { display: none; }

    .hero { min-height: 90vh; }
    .hero-title { font-size: 32px; letter-spacing: 1px; }
    .hero-subtitle { font-size: 15px; }
    .hero-actions { flex-direction: column; align-items: center; }
    .btn { width: 80%; justify-content: center; }

    .advantages-grid,
    .products-grid,
    .qualifications-grid { grid-template-columns: 1fr; }
    .about-stats { grid-template-columns: 1fr 1fr; gap: 12px; }
    .about-stat { padding: 20px 12px; }
    .about-stat-value { font-size: 28px; }

    .solution-item,
    .solution-item:nth-child(even) { grid-template-columns: 1fr; gap: 16px; padding: 20px; }
    .solution-num { font-size: 40px; }
    .solution-content h3 { font-size: 18px; }

    .news-item { grid-template-columns: 70px 1fr; gap: 16px; padding: 16px; }
    .news-arrow { display: none; }
    .news-date .day { font-size: 22px; }

    .contact-grid { grid-template-columns: 1fr; gap: 24px; }
    .contact-info-card, .contact-form { padding: 24px; }
    .form-row { grid-template-columns: 1fr; }

    .footer-grid { grid-template-columns: 1fr; gap: 24px; text-align: center; }
    .footer-brand .nav-logo { justify-content: center; }
    .footer-brand p { margin: 0 auto; }

    .legal-card, .news-detail-card { padding: 24px; }
    .legal-card h1, .news-detail-card h1 { font-size: 22px; }
}