/* Global */
:root {
    --color-primary: #1f5f8b;
    --color-primary-dark: #123f63;
    --color-primary-soft: #e9f3fa;
    --color-accent: #d8a25e;
    --color-accent-soft: #f8efe4;
    --color-text: #22313f;
    --color-text-light: #5d6b78;
    --color-border: #dbe4ea;
    --color-bg: #f6f9fc;
    --color-white: #ffffff;
    --shadow-card: 0 18px 48px rgba(24, 64, 94, 0.08);
    --shadow-soft: 0 10px 30px rgba(31, 95, 139, 0.08);
    --radius-lg: 24px;
    --radius-md: 18px;
    --radius-sm: 12px;
    --container: 1200px;
    --transition: 0.35s ease;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
    color: var(--color-text);
    background: var(--color-white);
    line-height: 1.7;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

button,
input,
select,
textarea {
    font: inherit;
}

.container {
    width: min(calc(100% - 32px), var(--container));
    margin: 0 auto;
}

.section {
    padding: 80px 0;
}

.section-muted {
    background: var(--color-bg);
}

.products-highlight {
    background: linear-gradient(180deg, #eef6fd 0%, #f7fbff 100%);
}

.section-head {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 36px;
}

.section-head h2,
.page-hero h1,
.split-content h2,
.detail-intro h1 {
    margin: 0 0 12px;
    font-size: clamp(28px, 3.5vw, 44px);
    line-height: 1.2;
}

.eyebrow {
    display: inline-flex;
    padding: 8px 14px;
    border-radius: 999px;
    background: var(--color-primary-soft);
    color: var(--color-primary);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.section-head p,
.page-hero p,
.card p,
.split-content p,
.stat p,
.footer p,
.lead {
    margin: 0;
    color: var(--color-text-light);
}

.topbar {
    background: var(--color-primary-dark);
    color: rgba(255, 255, 255, 0.86);
    font-size: 14px;
}

.topbar-inner {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 10px 0;
    flex-wrap: wrap;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 40;
    backdrop-filter: blur(14px);
    background: rgba(255, 255, 255, 0.94);
    border-bottom: 1px solid rgba(219, 228, 234, 0.85);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 84px;
    gap: 18px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
}

.brand img {
    width: 56px;
    height: 56px;
}

.brand-title {
    font-size: 20px;
    font-weight: 800;
}

.brand-subtitle {
    font-size: 12px;
    color: var(--color-text-light);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-links>a,
.nav-item>a {
    padding: 12px 16px;
    border-radius: 999px;
    transition: var(--transition);
    font-weight: 600;
}

.nav-links>a:hover,
.nav-links>a.active,
.nav-item>a:hover,
.nav-item>a.active {
    background: var(--color-primary-soft);
    color: var(--color-primary);
}

.nav-item {
    position: relative;
}

.sub-nav {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 210px;
    display: grid;
    gap: 4px;
    padding: 8px;
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid rgba(219, 228, 234, 0.9);
    border-radius: 14px;
    box-shadow: var(--shadow-soft);
    opacity: 0;
    pointer-events: none;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 30;
}

.nav-item:hover .sub-nav,
.nav-item:focus-within .sub-nav {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.sub-nav a {
    display: block;
    padding: 9px 12px;
    border-radius: 10px;
    font-weight: 600;
    color: var(--color-text);
    white-space: nowrap;
}

.sub-nav a:hover,
.sub-nav a.active {
    background: var(--color-primary-soft);
    color: var(--color-primary);
}

/* 三级子菜单 */
.sub-nav-item {
    position: relative;
}

.sub-nav-item>a::after {
    content: ' ›';
    opacity: 0.5;
    font-size: 12px;
}

.sub-nav-level3 {
    position: absolute;
    left: 100%;
    top: 0;
    min-width: 150px;
    opacity: 0;
    pointer-events: none;
    transform: translateX(6px);
    transition: var(--transition);
}

.sub-nav-item:hover .sub-nav-level3,
.sub-nav-item:focus-within .sub-nav-level3 {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(6px);
}

/* 移动端三级菜单内嵌 */
@media (max-width: 768px) {
    .sub-nav-level3 {
        position: static;
        transform: none;
        opacity: 1;
        pointer-events: auto;
        padding-left: 16px;
        box-shadow: none;
        border: none;
        background: none;
    }

    .sub-nav-level3 a {
        font-size: 13px;
        padding: 7px 10px;
    }
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn,
.btn-outline,
.mobile-toggle {
    border: 0;
    border-radius: 999px;
    cursor: pointer;
    transition: var(--transition);
}

.btn,
.btn-outline {
    padding: 12px 22px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn {
    background: linear-gradient(135deg, var(--color-primary), #2b7bb2);
    color: var(--color-white);
    box-shadow: var(--shadow-soft);
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 1px solid rgba(31, 95, 139, 0.24);
}

.btn-outline:hover {
    background: var(--color-primary-soft);
}

.mobile-toggle {
    display: none;
    width: 48px;
    height: 48px;
    background: var(--color-primary-soft);
    position: relative;
}

.mobile-toggle span,
.mobile-toggle::before,
.mobile-toggle::after {
    content: "";
    position: absolute;
    width: 22px;
    height: 2px;
    background: var(--color-primary);
    left: 13px;
    transition: var(--transition);
}

.mobile-toggle span {
    top: 23px;
}

.mobile-toggle::before {
    top: 16px;
}

.mobile-toggle::after {
    top: 30px;
}

.mobile-toggle.is-open span {
    opacity: 0;
}

.mobile-toggle.is-open::before {
    transform: translateY(7px) rotate(45deg);
}

.mobile-toggle.is-open::after {
    transform: translateY(-7px) rotate(-45deg);
}

.hero {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #0d3150 0%, #1f5f8b 55%, #163f60 100%);
}

.hero-slider {
    position: relative;
}

.hero-slide {
    display: none;
    min-height: 660px;
    align-items: center;
    padding: 56px 0 80px;
}

.hero-slide.is-active {
    display: flex;
}

.hero-grid,
.split-grid,
.contact-grid,
.footer-grid,
.page-grid,
.detail-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 36px;
    align-items: center;
}

.hero-copy h1 {
    margin: 18px 0;
    font-size: clamp(32px, 4vw, 52px);
    line-height: 1.1;
    color: #ffffff;
}

.hero-copy h1 em {
    font-style: normal;
    color: #f5b840;
}

.hero-copy p {
    margin: 0 0 28px;
    color: rgba(255, 255, 255, 0.82);
    font-size: 18px;
}

.hero-points {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 26px;
}

.hero-points span,
.tag {
    display: inline-flex;
    align-items: center;
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 999px;
    color: #ffffff;
    font-weight: 600;
}

.hero-media {
    position: relative;
}

.hero-media-card,
.media-card {
    background: var(--color-white);
    border-radius: 28px;
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.hero-media-card img,
.media-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.floating-panel {
    position: absolute;
    right: -18px;
    bottom: 28px;
    padding: 18px 20px;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(12px);
    border-radius: 20px;
    box-shadow: var(--shadow-card);
    min-width: 230px;
}

.floating-panel strong {
    display: block;
    font-size: 28px;
    color: var(--color-primary-dark);
}

.hero-controls,
.banner-dots {
    display: flex;
    gap: 10px;
    margin-top: 26px;
}

.hero-dot,
.banner-dot {
    width: 12px;
    height: 12px;
    border-radius: 999px;
    border: 0;
    background: rgba(31, 95, 139, 0.18);
    cursor: pointer;
}

.hero-dot.is-active,
.banner-dot.is-active {
    width: 34px;
    background: var(--color-primary);
}

.metrics {
    margin-top: -50px;
    position: relative;
    z-index: 3;
}

.metrics-grid,
.card-grid,
.case-grid,
.news-grid,
.product-grid,
.team-grid,
.job-grid,
.icon-grid,
.contact-cards,
.topic-grid {
    display: grid;
    gap: 24px;
}

.metrics-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.metric,
.card,
.contact-card,
.form-card,
.info-card,
.job-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(219, 228, 234, 0.75);
}

.metric strong,
.stat strong {
    display: block;
    font-size: 34px;
    line-height: 1.1;
    color: var(--color-primary-dark);
    margin-bottom: 8px;
}

.card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
    height: 100%;
}

.card-icon {
    width: 72px;
    height: 72px;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--color-primary-soft), #ffffff);
    display: grid;
    place-items: center;
    margin-bottom: 18px;
}

.card h3,
.case-card h3,
.news-card h3,
.product-card h3,
.job-card h3,
.topic-card h3,
.info-card h3 {
    margin: 0 0 12px;
    font-size: 22px;
}

.list {
    margin: 18px 0 0;
    padding: 0;
    list-style: none;
}

.list li {
    position: relative;
    padding-left: 18px;
    margin-bottom: 10px;
    color: var(--color-text-light);
}

.list li::before {
    content: "";
    width: 7px;
    height: 7px;
    border-radius: 999px;
    background: var(--color-accent);
    position: absolute;
    left: 0;
    top: 11px;
}

.case-grid,
.news-grid,
.team-grid,
.job-grid,
.contact-cards,
.topic-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.case-card,
.news-card,
.product-card,
.team-card,
.topic-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(219, 228, 234, 0.75);
    height: 100%;
}

.case-card img,
.news-card img,
.topic-card img,
.team-card img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
}

.case-card-content,
.news-card-content,
.product-card-content,
.team-card-content,
.topic-card-content {
    padding: 24px;
}

.case-meta,
.news-meta {
    display: inline-flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 12px;
    color: var(--color-primary);
    font-size: 14px;
    font-weight: 700;
}

.middle-banner {
    position: relative;
    overflow: hidden;
}

.banner-track {
    position: relative;
}

.banner-slide {
    display: none;
}

.banner-slide.is-active {
    display: block;
}

.banner-panel {
    min-height: 320px;
    border-radius: 30px;
    position: relative;
    overflow: hidden;
}

.banner-panel::before {
    content: none;
}

.banner-panel>* {
    position: relative;
    z-index: 1;
}

.banner-panel img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.banner-panel h2 {
    margin: 0 0 12px;
    font-size: clamp(30px, 4vw, 46px);
}

.banner-panel p {
    max-width: 640px;
    color: rgba(255, 255, 255, 0.88);
}

.product-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.product-card {
    border: 1px solid rgba(31, 95, 139, 0.08);
    display: flex;
    flex-direction: column;
}

.product-top {
    padding: 28px 28px 0;
    display: flex;
    align-items: start;
    justify-content: space-between;
    gap: 12px;
}

.product-top img {
    width: 68px;
    height: 68px;
}

.product-card-content {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.product-card .btn-outline {
    margin-top: auto;
    width: fit-content;
}

.contact-band {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    color: var(--color-white);
}

.contact-band .section-head p,
.contact-band .contact-card p,
.contact-band .lead {
    color: rgba(255, 255, 255, 0.82);
}

.contact-cards {
    margin-top: 30px;
}

.contact-card {
    background: rgba(255, 255, 255, 0.08);
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.contact-card strong {
    display: block;
    margin-bottom: 10px;
    font-size: 18px;
}

.inquiry {
    position: relative;
}

.contact-grid {
    align-items: start;
}

.inquiry-single {
    display: block;
}

.inquiry-single .form-card {
    max-width: 980px;
    margin: 0 auto;
}

.form-card {
    padding: 32px;
}

.form-title {
    margin: 0 0 10px;
    font-size: 28px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.field,
.field-full {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.field-full {
    grid-column: 1 / -1;
}

label {
    font-weight: 700;
    font-size: 14px;
}

input,
select,
textarea {
    width: 100%;
    padding: 14px 16px;
    border-radius: 14px;
    border: 1px solid var(--color-border);
    background: #fbfdff;
    color: var(--color-text);
    outline: none;
    transition: var(--transition);
}

input:focus,
select:focus,
textarea:focus {
    border-color: rgba(31, 95, 139, 0.55);
    box-shadow: 0 0 0 4px rgba(31, 95, 139, 0.1);
}

textarea {
    min-height: 130px;
    resize: vertical;
}

.form-actions {
    margin-top: 20px;
    display: flex;
    gap: 14px;
    align-items: center;
    flex-wrap: wrap;
}

.form-note {
    color: var(--color-text-light);
    font-size: 14px;
}

.page-hero {
    padding: 86px 0 56px;
    background: linear-gradient(180deg, #f5f9fc 0%, #ffffff 100%);
    border-bottom: 1px solid rgba(219, 228, 234, 0.75);
}

.breadcrumb {
    display: flex;
    gap: 10px;
    align-items: center;
    color: var(--color-text-light);
    font-size: 14px;
    margin-bottom: 20px;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.stat {
    background: var(--color-white);
    padding: 24px;
    border-radius: 22px;
    border: 1px solid rgba(219, 228, 234, 0.75);
    box-shadow: var(--shadow-soft);
}

.contact-hero-panel {
    background: var(--color-white);
    border: 1px solid rgba(219, 228, 234, 0.75);
    box-shadow: var(--shadow-soft);
    border-radius: 24px;
    padding: 28px;
}

.contact-hero-panel h2 {
    margin: 0 0 16px;
    font-size: 24px;
}

.contact-hero-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 14px 0;
    border-top: 1px dashed rgba(31, 95, 139, 0.18);
}

.contact-hero-item:first-of-type {
    border-top: 0;
    padding-top: 0;
}

.contact-hero-item strong {
    color: var(--color-primary-dark);
    font-size: 15px;
}

.contact-hero-item span {
    color: var(--color-text);
}

.split-content .list {
    margin-top: 16px;
}

.info-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 24px;
}

.info-card+.info-card {
    margin-top: 24px;
}

.filter-bar {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 28px;
}

.filter-chip {
    padding: 10px 16px;
    border-radius: 999px;
    background: var(--color-white);
    border: 1px solid rgba(31, 95, 139, 0.14);
    color: var(--color-primary);
    font-weight: 700;
}

.footer {
    background: #0f2435;
    color: rgba(255, 255, 255, 0.78);
    padding: 70px 0 20px;
}

.footer-grid {
    align-items: start;
}

.footer h3,
.footer h4 {
    margin: 0 0 16px;
    color: var(--color-white);
}

.footer-nav,
.footer-contact {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-nav li,
.footer-contact li {
    margin-bottom: 10px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 40px;
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 14px;
}

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: none;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: auto;
}

.skip-link:focus {
    left: 12px;
    top: 12px;
    z-index: 999;
    background: var(--color-primary-dark);
    color: var(--color-white);
    padding: 10px 14px;
    border-radius: 10px;
}

@media (max-width: 1100px) {

    .hero-grid,
    .split-grid,
    .contact-grid,
    .footer-grid,
    .page-grid,
    .detail-grid,
    .info-grid {
        grid-template-columns: 1fr;
    }

    .metrics-grid,
    .card-grid,
    .case-grid,
    .news-grid,
    .product-grid,
    .team-grid,
    .job-grid,
    .contact-cards,
    .topic-grid,
    .stat-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .floating-panel {
        position: static;
        margin-top: 16px;
    }

    .navbar {
        min-height: 74px;
    }

    .nav-links {
        position: absolute;
        left: 16px;
        right: 16px;
        top: calc(100% + 10px);
        background: rgba(255, 255, 255, 0.98);
        border: 1px solid rgba(219, 228, 234, 0.9);
        box-shadow: var(--shadow-soft);
        border-radius: 20px;
        padding: 14px;
        flex-direction: column;
        align-items: stretch;
        opacity: 0;
        pointer-events: none;
        transform: translateY(-12px);
        transition: var(--transition);
    }

    .nav-item {
        position: static;
    }

    .sub-nav {
        position: static;
        min-width: 0;
        opacity: 1;
        pointer-events: auto;
        transform: none;
        box-shadow: none;
        border: 0;
        border-radius: 0;
        background: transparent;
        padding: 0 0 0 14px;
        margin-top: 4px;
    }

    .sub-nav a {
        padding: 8px 10px;
        border-radius: 10px;
        font-weight: 500;
        white-space: normal;
    }

    .nav-links.is-open {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0);
    }

    .mobile-toggle {
        display: inline-flex;
    }

    .header-actions .btn {
        display: none;
    }
}

@media (max-width: 720px) {
    .section {
        padding: 64px 0;
    }

    .hero-slide {
        min-height: auto;
        padding-top: 34px;
    }

    .metrics {
        margin-top: 0;
        padding-top: 24px;
    }

    .metrics-grid,
    .card-grid,
    .case-grid,
    .news-grid,
    .product-grid,
    .team-grid,
    .job-grid,
    .contact-cards,
    .topic-grid,
    .stat-grid,
    .form-grid {
        grid-template-columns: 1fr;
    }

    .section-head {
        flex-direction: column;
        align-items: start;
    }

    .banner-panel,
    .metric,
    .card,
    .product-card-content,
    .case-card-content,
    .news-card-content,
    .team-card-content,
    .topic-card-content,
    .form-card,
    .info-card,
    .job-card,
    .contact-card {
        padding: 22px;
    }

    .brand-title {
        font-size: 18px;
    }

    .brand-subtitle {
        display: none;
    }

    .hero-copy h1 {
        font-size: 34px;
    }

    .hero-copy p {
        font-size: 16px;
    }

    .topbar-inner {
        flex-direction: column;
        gap: 6px;
    }
}