*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: 'PingFang SC', 'Helvetica Neue', 'Microsoft YaHei', sans-serif;
    color: #2d3748;
    background: #f9fafc;
    line-height: 1.6;
    overflow-x: hidden;
}
a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

:root {
    --blue-dark: #0a2a5c;
    --blue-mid: #1a4a8a;
    --blue-bright: #2c6fba;
    --blue-light: #4a90d9;
    --blue-soft: #e8f0fe;
    --gold: #c9a84c;
    --gold-light: #f0e4b8;
    --text-dark: #1a202c;
    --text-mid: #4a5568;
    --text-light: #a0aec0;
    --bg-white: #ffffff;
    --bg-light: #f7f9fc;
    --shadow-sm: 0 4px 20px rgba(10, 42, 92, 0.08);
    --shadow-md: 0 12px 40px rgba(10, 42, 92, 0.12);
    --shadow-lg: 0 24px 60px rgba(10, 42, 92, 0.18);
    --radius: 16px;
    --radius-sm: 10px;
    --transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal {
    opacity: 0;
    transform: translateY(48px);
    transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}
.reveal-delay-1 {
    transition-delay: 0.1s;
}
.reveal-delay-2 {
    transition-delay: 0.2s;
}
.reveal-delay-3 {
    transition-delay: 0.3s;
}
.reveal-delay-4 {
    transition-delay: 0.4s;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(10, 42, 92, 0.06);
    transition: var(--transition);
    height: 72px;
}
.header.scrolled {
    box-shadow: 0 4px 30px rgba(10, 42, 92, 0.10);
    background: rgba(255, 255, 255, 0.97);
}
.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.logo {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--blue-dark);
    white-space: nowrap;
}
.logo .logo-station {
    color: var(--blue-bright);
    font-weight: 600;
}
.logo .logo-station::before {
    content: '·';
    margin: 0 4px;
    color: var(--text-light);
}
.header-phone {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--blue-dark);
    font-weight: 600;
    font-size: 16px;
    letter-spacing: 0.3px;
}
.header-phone .phone-icon {
    width: 36px;
    height: 36px;
    background: var(--blue-soft);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--blue-bright);
    transition: var(--transition);
}
.header-phone:hover .phone-icon {
    background: var(--blue-bright);
    color: #fff;
}
.header-phone a {
    color: var(--blue-dark);
}
.header-phone a:hover {
    color: var(--blue-bright);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.menu-toggle span {
    width: 26px;
    height: 2.5px;
    background: var(--blue-dark);
    border-radius: 4px;
    transition: var(--transition);
}
.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.nav {
    display: flex;
    align-items: center;
    gap: 32px;
}
.nav a {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-mid);
    position: relative;
    padding: 4px 0;
    transition: var(--transition);
}
.nav a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2.5px;
    background: var(--blue-bright);
    border-radius: 4px;
    transition: var(--transition);
}
.nav a:hover {
    color: var(--blue-dark);
}
.nav a:hover::after {
    width: 100%;
}
.nav .nav-phone-mobile {
    display: none;
}

.hero {
    padding-top: 72px;
    min-height: 100vh;
    background: linear-gradient(145deg, #f0f4fd 0%, #dce6f5 50%, #e8f0fe 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
            radial-gradient(ellipse 60% 50% at 20% 80%, rgba(44, 111, 186, 0.10) 0%, transparent 70%),
            radial-gradient(ellipse 50% 40% at 80% 20%, rgba(10, 42, 92, 0.08) 0%, transparent 70%);
    pointer-events: none;
}
.hero .container {
    width: 100%;
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 60px 24px 80px;
}
.hero-badge {
    display: inline-block;
    background: rgba(44, 111, 186, 0.12);
    color: var(--blue-bright);
    font-size: 14px;
    font-weight: 600;
    padding: 6px 24px;
    border-radius: 50px;
    letter-spacing: 1px;
    margin-bottom: 28px;
    backdrop-filter: blur(4px);
    border: 1px solid rgba(44, 111, 186, 0.15);
    animation: fadeInDown 0.8s ease forwards;
}
.hero h1 {
    font-size: clamp(36px, 6vw, 64px);
    font-weight: 800;
    color: var(--blue-dark);
    line-height: 1.2;
    letter-spacing: -0.5px;
    margin-bottom: 20px;
    animation: fadeInUp 0.9s ease forwards;
}
.hero h1 .highlight {
    background: linear-gradient(135deg, var(--blue-bright), var(--blue-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero p {
    font-size: clamp(16px, 2vw, 22px);
    color: var(--text-mid);
    max-width: 720px;
    margin: 0 auto 32px;
    line-height: 1.7;
    animation: fadeInUp 1.0s ease forwards;
}
.hero-phone {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    color: var(--blue-dark);
    background: rgba(255, 255, 255, 0.70);
    backdrop-filter: blur(12px);
    padding: 12px 32px;
    border-radius: 60px;
    border: 1px solid rgba(44, 111, 186, 0.15);
    box-shadow: 0 8px 32px rgba(10, 42, 92, 0.08);
    animation: fadeInUp 1.1s ease forwards;
    transition: var(--transition);
}
.hero-phone:hover {
    background: var(--blue-dark);
    color: #fff;
    border-color: var(--blue-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(10, 42, 92, 0.20);
}
.hero-phone .phone-icon {
    font-size: 22px;
}

.hero-advantages {
    display: grid;
    grid-template-columns: repeat(4, minmax(160px, 1fr));
    gap: 16px;
    margin-top: 48px;
    animation: fadeInUp 1.2s ease forwards;
}
.hero-advantages .item {
    background: rgba(255, 255, 255, 0.55);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.60);
    border-radius: var(--radius-sm);
    padding: 18px 12px;
    font-size: 14px;
    font-weight: 600;
    color: var(--blue-dark);
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(10, 42, 92, 0.04);
}
.hero-advantages .item:hover {
    background: rgba(255, 255, 255, 0.85);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(10, 42, 92, 0.10);
}
.hero-advantages .item .num {
    display: block;
    font-size: 28px;
    font-weight: 800;
    color: var(--blue-bright);
    margin-bottom: 4px;
}

@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(40px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}
@keyframes fadeInDown {
    0% {
        opacity: 0;
        transform: translateY(-20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.section {
    padding: 80px 0;
}
.section-title {
    font-size: clamp(28px, 3.6vw, 40px);
    font-weight: 800;
    color: var(--blue-dark);
    text-align: center;
    margin-bottom: 16px;
    letter-spacing: -0.3px;
}
.section-sub {
    text-align: center;
    color: var(--text-mid);
    font-size: 17px;
    max-width: 640px;
    margin: 0 auto 48px;
    line-height: 1.7;
}
.section-title .highlight {
    color: var(--blue-bright);
}

.about-wrap {
    display: flex;
    gap: 48px;
    align-items: center;
    flex-wrap: wrap;
}
.about-text {
    flex: 1 1 48%;
    min-width: 300px;
}
.about-text p {
    font-size: 16px;
    color: var(--text-mid);
    line-height: 1.8;
    margin-bottom: 20px;
}
.about-text .about-phone {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    color: var(--blue-bright);
    font-size: 18px;
    background: var(--blue-soft);
    padding: 6px 20px 6px 16px;
    border-radius: 40px;
    margin-top: 8px;
}
.about-image {
    flex: 1 1 42%;
    min-width: 280px;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    background: var(--bg-white);
    transition: var(--transition);
}
.about-image:hover {
    box-shadow: var(--shadow-lg);
    transform: scale(1.01);
}
.about-image img {
    width: 100%;
    height: auto;
    object-fit: cover;
    display: block;
}

.product-series {
    background: var(--bg-white);
}
.product-series:nth-child(even) {
    background: var(--bg-light);
}
.series-title {
    font-size: 26px;
    font-weight: 700;
    color: var(--blue-dark);
    margin-bottom: 32px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.series-title .tag {
    background: var(--blue-bright);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    padding: 2px 14px;
    border-radius: 30px;
    letter-spacing: 0.3px;
}
.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.product-card {
    background: var(--bg-white);
    border-radius: var(--radius-sm);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid rgba(10, 42, 92, 0.04);
    cursor: default;
}
.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(44, 111, 186, 0.10);
}
.product-card .img-wrap {
    width: 100%;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    background: #f0f4fd;
    position: relative;
}
.product-card .img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}
.product-card:hover .img-wrap img {
    transform: scale(1.08);
}
.product-card .img-wrap::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10, 42, 92, 0.02), transparent);
    pointer-events: none;
}
.product-card .pname {
    padding: 16px 14px 18px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
    text-align: center;
    letter-spacing: 0.3px;
    line-height: 1.4;
    background: var(--bg-white);
}
.product-card .pname .a-tag {
    color: var(--blue-bright);
    font-weight: 700;
}
.data-empty{
    padding:42px;
    border:1px dashed #d5e1ee;
    border-radius:14px;
    text-align:center;
    color:var(--geo-muted);
    background:#fff
}
.footer {
    background: var(--blue-dark);
    color: rgba(255, 255, 255, 0.80);
    padding: 48px 0 32px;
}
.footer .container {
    display: flex;
    flex-direction: column;
    gap: 28px;
}
.footer .friend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 24px;
    justify-content: center;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer .friend-links a {
    color: rgba(255, 255, 255, 0.60);
    font-size: 14px;
    transition: var(--transition);
    padding: 4px 0;
    position: relative;
}
.footer .friend-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--gold-light);
    transition: var(--transition);
}
.footer .friend-links a:hover {
    color: var(--gold-light);
}
.footer .friend-links a:hover::after {
    width: 100%;
}
.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.55);
}
.footer-bottom .copyright {
    letter-spacing: 0.3px;
}
.footer-bottom .footer-phone {
    color: var(--gold-light);
    font-weight: 600;
}

.float-phone {
    position: fixed;
    bottom: 28px;
    right: 28px;
    z-index: 999;
    width: 60px;
    height: 60px;
    background: var(--blue-bright);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 28px;
    box-shadow: 0 8px 32px rgba(44, 111, 186, 0.35);
    transition: var(--transition);
    border: none;
    cursor: pointer;
    text-decoration: none;
    animation: pulse-phone 2.4s ease-in-out infinite;
}
.float-phone:hover {
    transform: scale(1.08);
    box-shadow: 0 12px 48px rgba(44, 111, 186, 0.45);
    background: var(--blue-dark);
}
@keyframes pulse-phone {
    0%,
    100% {
        box-shadow: 0 8px 32px rgba(44, 111, 186, 0.35);
    }
    50% {
        box-shadow: 0 8px 48px rgba(44, 111, 186, 0.55);
    }
}

@media (max-width: 992px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    .about-wrap {
        flex-direction: column;
    }
    .about-text {
        flex: 1 1 100%;
    }
    .about-image {
        flex: 1 1 100%;
        max-width: 600px;
        margin: 0 auto;
    }
    .header-phone .phone-text {
        display: none;
    }
    .header-phone .phone-icon {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }
}

@media (max-width: 768px) {
    .header {
        height: 64px;
    }
    .header .container {
        height: 64px;
    }
    .logo {
        font-size: 18px;
    }
    .hero {
        padding-top: 64px;
        min-height: auto;
    }
    .hero .container {
        padding: 40px 20px 60px;
    }
    .hero-advantages {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .hero-advantages .item {
        padding: 14px 10px;
        font-size: 13px;
    }
    .hero-advantages .item .num {
        font-size: 22px;
    }
    .section {
        padding: 56px 0;
    }
    .section-sub {
        margin-bottom: 32px;
        font-size: 15px;
    }
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    .product-card .pname {
        font-size: 13px;
        padding: 12px 10px 14px;
    }
    .series-title {
        font-size: 20px;
        margin-bottom: 20px;
    }
    .footer {
        padding: 32px 0 24px;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 8px;
    }
    .float-phone {
        width: 52px;
        height: 52px;
        font-size: 24px;
        bottom: 20px;
        right: 20px;
    }
    .nav {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 20px 24px 28px;
        gap: 16px;
        box-shadow: 0 20px 48px rgba(10, 42, 92, 0.12);
        transform: translateY(-110%);
        transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
        border-radius: 0 0 var(--radius) var(--radius);
        pointer-events: none;
    }
    .nav.open {
        transform: translateY(0);
        pointer-events: auto;
    }
    .nav a {
        font-size: 16px;
        padding: 8px 0;
        width: 100%;
        text-align: center;
    }
    .nav a::after {
        display: none;
    }
    .nav .nav-phone-mobile {
        display: block;
        margin-top: 8px;
        padding: 12px 24px;
        background: var(--blue-bright);
        color: #fff;
        border-radius: 40px;
        font-weight: 600;
        font-size: 16px;
        text-align: center;
    }
    .nav .nav-phone-mobile:hover {
        background: var(--blue-dark);
    }
    .menu-toggle {
        display: flex;
    }
    .header-phone .phone-text {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-advantages {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    .hero-advantages .item {
        padding: 10px 8px;
        font-size: 12px;
    }
    .hero-advantages .item .num {
        font-size: 18px;
    }
    .hero h1 {
        font-size: 28px;
    }
    .hero p {
        font-size: 14px;
    }
    .hero-phone {
        font-size: 16px;
        padding: 10px 22px;
    }
    .product-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    .product-card .pname {
        font-size: 12px;
        padding: 10px 8px 12px;
    }
    .series-title {
        font-size: 18px;
    }
    .section-title {
        font-size: 24px;
    }
    .about-text p {
        font-size: 14px;
    }
    .float-phone {
        width: 48px;
        height: 48px;
        font-size: 22px;
        bottom: 16px;
        right: 16px;
    }
    .footer .friend-links {
        gap: 8px 16px;
    }
    .footer .friend-links a {
        font-size: 12px;
    }
}

.text-center {
    text-align: center;
}
.mt-16 {
    margin-top: 16px;
}
.mt-32 {
    margin-top: 32px;
}
.mb-16 {
    margin-bottom: 16px;
}
.gap-8 {
    gap: 8px;
}