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

:root {
    --bg: #0a0a0a;
    --bg-secondary: #111111;
    --text: #e0e0e0;
    --text-muted: #999;
    --accent: #f0a030;
    --accent-glow: rgba(240, 160, 48, 0.35);
    --accent2: #c85030;
    --border: #1f1f1f;
    --card-bg: #161616;
    --radius: 10px;
    --transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* 背景光晕 */
.bg-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}
.bg-glow .orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(110px);
    opacity: 0.12;
    animation: floatOrb 18s infinite ease-in-out;
}
.bg-glow .orb:nth-child(1) {
    width: 600px; height: 600px; background: #f0a030;
    top: -15%; left: -10%; animation-delay: 0s;
}
.bg-glow .orb:nth-child(2) {
    width: 500px; height: 500px; background: #c85030;
    bottom: -12%; right: -8%; animation-delay: -8s; animation-duration: 22s;
}
.bg-glow .orb:nth-child(3) {
    width: 400px; height: 400px; background: #f0a030;
    top: 50%; left: 55%; animation-delay: -14s; animation-duration: 20s; opacity: 0.07;
}

@keyframes floatOrb {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(60px, -40px) scale(1.12); }
    50% { transform: translate(-30px, 50px) scale(0.92); }
    75% { transform: translate(-50px, -30px) scale(1.06); }
}

.main-wrapper {
    position: relative;
    z-index: 1;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0; left: 0; width: 100%;
    z-index: 1000;
    padding: 0 40px;
    height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition);
    background: transparent;
}
.navbar.scrolled {
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}
.nav-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: #fff;
    font-weight: 700;
    font-size: 1.35rem;
    z-index: 1001;
}
.nav-logo .logo {
    height: 38px;
    width: auto;
    display: block;
}
.nav-links {
    display: flex;
    list-style: none;
    gap: 36px;
    align-items: center;
}
.nav-links a {
    text-decoration: none;
    color: #bbb;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 4px 0;
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px; left: 0;
    width: 0; height: 2px;
    background: var(--accent);
    transition: var(--transition);
}
.nav-links a:hover { color: #fff; }
.nav-links a:hover::after { width: 100%; }
.nav-cta {
    background: var(--accent);
    color: #0a0a0a !important;
    padding: 9px 22px;
    border-radius: 24px;
    font-weight: 600 !important;
    box-shadow: 0 0 20px var(--accent-glow);
    white-space: nowrap;
}
.nav-cta:hover {
    background: #f5b845;
    transform: translateY(-1px);
}
.nav-cta::after { display: none !important; }

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1001;
    background: none;
    border: none;
    padding: 6px;
}
.hamburger span {
    display: block;
    width: 26px; height: 2.5px;
    background: #fff;
    border-radius: 2px;
    transition: var(--transition);
}
.hamburger.active span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.active span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 32px 80px;
    position: relative;
}
.hero-content { max-width: 720px; z-index: 2; }
.hero-badge {
    display: inline-block;
    padding: 7px 20px;
    border: 1px solid rgba(240, 160, 48, 0.4);
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--accent);
    margin-bottom: 28px;
    background: rgba(240, 160, 48, 0.05);
}
.hero h1 {
    font-size: clamp(2.6rem, 6vw, 4.2rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
    color: #fff;
}
.hero h1 .highlight {
    background: linear-gradient(135deg, var(--accent), #e87840);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero p {
    font-size: 1.15rem;
    color: #aaa;
    max-width: 520px;
    margin: 0 auto 36px;
}
.hero-btns {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
}
.btn {
    display: inline-block;
    padding: 13px 30px;
    border-radius: 28px;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-family: var(--font-sans);
}
.btn-primary {
    background: var(--accent);
    color: #0a0a0a;
    box-shadow: 0 0 28px var(--accent-glow);
}
.btn-primary:hover {
    background: #f5b845;
    transform: translateY(-2px);
}
.btn-outline {
    background: transparent;
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, 0.3);
}
.btn-outline:hover {
    border-color: #fff;
    background: rgba(255, 255, 255, 0.04);
    transform: translateY(-2px);
}
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    color: #666;
    font-size: 0.75rem;
    animation: bounceDown 2s infinite;
}
.scroll-indicator .line { width: 1px; height: 32px; background: linear-gradient(to bottom, #666, transparent); }
@keyframes bounceDown {
    0%,100%{ transform: translateX(-50%) translateY(0);}
    50%{ transform: translateX(-50%) translateY(10px);}
}

/* 通用区块 */
.section { padding: 100px 32px; position: relative; z-index: 2; }
.section-tag { font-size: 0.8rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin-bottom: 10px; font-weight: 600; }
.section-title { font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 700; color: #fff; margin-bottom: 16px; }
.section-desc { color: #999; font-size: 1rem; max-width: 560px; line-height: 1.7; margin-left: auto;  margin-right: auto; }
.section-header { text-align: center; margin-bottom: 60px; }
.container { max-width: 1200px; margin: 0 auto; }

/* 服务卡片 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 28px;
}
.service-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.service-card:hover {
    border-color: rgba(240, 160, 48, 0.35);
    transform: translateY(-4px);
}
.service-card .card-icon {
    width: 50px; height: 50px;
    border-radius: 12px;
    background: rgba(240, 160, 48, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin-bottom: 20px;
    color: var(--accent);
}
.service-card h3 { font-size: 1.2rem; font-weight: 700; color: #fff; margin-bottom: 8px; }
.service-card p { color: #999; font-size: 0.9rem; line-height: 1.6; }
.service-card .card-glow-line {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0;
    transition: var(--transition);
}
.service-card:hover .card-glow-line { opacity: 0.7; }

/* 关于我们 */
.about-section {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.about-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.about-text .section-tag, .about-text .section-title, .about-text .section-desc { text-align: left; margin: 0 0 20px; }
.about-stats { display: flex; gap: 40px; margin-top: 28px; }
.stat-item .stat-num { font-size: 2.2rem; font-weight: 800; color: var(--accent); line-height: 1; }
.stat-item .stat-label { font-size: 0.85rem; color: #888; margin-top: 4px; }
.about-visual { display: flex; justify-content: center; align-items: center; }
.about-graphic {
    width: 280px; height: 280px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, rgba(240, 160, 48, 0.2), transparent 70%);
    display: flex; align-items: center; justify-content: center;
}
.about-graphic .ring {
    width: 200px; height: 200px;
    border-radius: 50%;
    border: 2px dashed rgba(240, 160, 48, 0.3);
    animation: spinSlow 30s linear infinite;
    display: flex; align-items: center; justify-content: center;
}
.about-graphic .inner-dot {
    width: 60px; height: 60px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 50px var(--accent-glow);
    animation: pulse 2.5s ease-in-out infinite;
}
@keyframes spinSlow { to { transform: rotate(360deg); } }
@keyframes pulse { 0%,100%{ transform: scale(1);} 50%{ transform: scale(1.25);} }

/* 页脚 */
.footer {
    background: #060606;
    border-top: 1px solid var(--border);
    padding: 50px 32px 30px;
    text-align: center;
    color: #777;
    font-size: 0.85rem;
}
.footer .footer-logo { font-weight: 700; font-size: 1.2rem; color: #fff; margin-bottom: 10px; }
.footer a { color: #aaa; text-decoration: none; transition: var(--transition); }
.footer a:hover { color: var(--accent); }
.footer-links { display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; margin: 16px 0; }

/* ========= 电话咨询弹窗样式 ========= */
.contact-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    z-index: 2000;
    justify-content: center;
    align-items: center;
}
.contact-modal .modal-content {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 28px;
    width: 90%;
    max-width: 400px;
    padding: 28px 24px 36px;
    position: relative;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(240, 160, 48, 0.2);
    animation: modalFadeIn 0.25s ease-out;
}
.contact-modal .close-btn {
    position: absolute;
    top: 16px;
    right: 20px;
    font-size: 28px;
    font-weight: 300;
    color: #aaa;
    cursor: pointer;
    transition: 0.2s;
    line-height: 1;
}
.contact-modal .close-btn:hover { color: var(--accent); }
.modal-body { text-align: center; }
.phone-section {
    background: rgba(240, 160, 48, 0.1);
    border-radius: 60px;
    padding: 12px 16px;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
}
.phone-icon { font-size: 24px; }
.phone-number {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent);
    text-decoration: none;
    letter-spacing: 1px;
}
.phone-number:hover { text-decoration: underline; }
.copy-btn {
    background: var(--accent);
    border: none;
    color: #0a0a0a;
    padding: 6px 16px;
    border-radius: 30px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
}
.copy-btn:hover { background: #f5b845; transform: translateY(-1px); }
.wechat-section { margin-top: 8px; }
.wechat-label { color: #ddd; font-size: 0.9rem; margin-bottom: 12px; }
.wechat-qr {
    width: 140px;
    height: 140px;
    object-fit: contain;
    background: white;
    border-radius: 16px;
    padding: 8px;
    margin: 8px auto;
    display: block;
    border: 1px solid rgba(255,255,255,0.2);
}
.wechat-id { font-size: 0.85rem; color: #aaa; margin-top: 12px; }
@keyframes modalFadeIn {
    from { opacity: 0; transform: scale(0.96); }
    to { opacity: 1; transform: scale(1); }
}

/* 响应式 */
@media (max-width: 768px) {
    .navbar { padding: 0 20px; height: 60px; }
    .nav-links {
        position: fixed;
        top: 0; right: -100%;
        width: 280px; height: 100vh;
        background: rgba(16, 16, 16, 0.97);
        backdrop-filter: blur(24px);
        flex-direction: column;
        justify-content: center;
        gap: 28px;
        transition: var(--transition);
        z-index: 1000;
        border-left: 1px solid var(--border);
    }
    .nav-links.active { right: 0; }
    .nav-links a { font-size: 1.1rem; }
    .hamburger { display: flex; }
    .hero h1 { font-size: 2.2rem; }
    .about-inner { grid-template-columns: 1fr; gap: 36px; }
    .about-visual { order: -1; }
    .about-graphic { width: 200px; height: 200px; }
    .about-graphic .ring { width: 140px; height: 140px; }
    .about-graphic .inner-dot { width: 44px; height: 44px; }
    .section { padding: 70px 20px; }
}
/* 下载中心图标图片样式 - 限制大小 */
.download-icon-img {
    width: 40px;
    height: auto;
    margin-bottom: 12px;
    display: block;
}