:root {
    --bg: #0b1220;
    --bg-soft: #111827;
    --bg-muted: #f3f4f6;
    --text: #111827;
    --text-muted: #6b7280;
    --text-inverse: #f9fafb;
    --primary: #ea580c;
    --primary-dark: #c2410c;
    --border: #e5e7eb;
    --radius: 12px;
    --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
    --container: 1180px;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text);
    line-height: 1.6;
    background: #fff;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(11, 18, 32, 0.96);
    color: var(--text-inverse);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    backdrop-filter: blur(10px);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 72px;
    gap: 16px;
}
.logo { font-size: 1.35rem; font-weight: 800; letter-spacing: 0.02em; }
.main-nav { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.main-nav a { color: #e5e7eb; font-weight: 500; }
.main-nav a:hover { color: #fff; }
.nav-dropdown { position: relative; }
.nav-dropdown-toggle {
    background: transparent;
    border: none;
    color: #e5e7eb;
    font: inherit;
    font-weight: 500;
    cursor: pointer;
    padding: 0;
}
.nav-dropdown-toggle:hover { color: #fff; }
.nav-dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    min-width: 220px;
    background: #111827;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 10px;
    padding: 8px;
    box-shadow: 0 12px 30px rgba(0,0,0,0.25);
}
.nav-dropdown.is-open .nav-dropdown-menu { display: grid; gap: 4px; }
.nav-dropdown-menu a {
    display: block;
    padding: 10px 12px;
    border-radius: 8px;
    color: #e5e7eb;
}
.nav-dropdown-menu a:hover { background: rgba(255,255,255,0.06); color: #fff; }
.header-phone { color: var(--primary); font-weight: 700; white-space: nowrap; }
.nav-toggle {
    display: none;
    width: 42px; height: 42px;
    border: 1px solid rgba(255,255,255,0.15);
    background: transparent;
    border-radius: 8px;
    padding: 8px;
}
.nav-toggle span {
    display: block; height: 2px; margin: 5px 0;
    background: #fff;
}

.hero {
    position: relative;
    background:
        linear-gradient(90deg, rgba(8, 16, 32, 0.88) 0%, rgba(8, 16, 32, 0.72) 45%, rgba(8, 16, 32, 0.76) 100%),
        url('/uploads/2026/07/1763557072412493000_banner1.png') center/cover no-repeat;
    color: var(--text-inverse);
    padding: 92px 0 78px;
}
.hero::before {
    display: none;
}
.hero-inner {
    min-height: 420px;
    display: flex;
    align-items: center;
}
.hero-body {
    max-width: 700px;
}
.hero-copy {
    position: relative;
    max-width: 680px;
}
.hero-copy::before {
    display: none;
}
.hero h1, .hero-body h1 { font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1.15; margin: 0 0 16px; }
.hero h1, .hero-body h1 {
    font-size: clamp(2.9rem, 6.4vw, 4.6rem);
    line-height: 1.06;
    letter-spacing: -0.04em;
    margin: 0 0 20px;
}
.hero p {
    color: rgba(229, 231, 235, 0.92);
    font-size: 1.12rem;
    max-width: 640px;
}
.hero-media {
    display: none;
}
.hero-media img {
    width: 100%;
    height: 100%;
    min-height: 100%;
    object-fit: cover;
    object-position: center center;
    border-radius: 0;
    box-shadow: none;
    filter: brightness(0.62);
}
.hero-badge {
    display: none;
}

.section { padding: 88px 0; }
.section-muted { background: var(--bg-muted); }
.section-dark { background: var(--bg-soft); color: var(--text-inverse); }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-dark p { color: #d1d5db; }
.section h2 { font-size: clamp(1.8rem, 3vw, 2.5rem); margin: 10px 0 16px; line-height: 1.15; }
.section-sub, .page-lead { color: var(--text-muted); font-size: 1.05rem; max-width: 720px; }
.page-hero .page-lead { color: #9ca3af; margin: 12px 0 0; line-height: 1.6; }
.page-lead:empty { display: none; }
.section-intro { color: var(--text-muted); max-width: 760px; margin-bottom: 20px; font-size: 1.03rem; }
.section-media-grid {
    display: grid;
    gap: 28px;
    margin-top: 28px;
}
.media-split {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
    gap: 36px 44px;
    align-items: center;
}
.media-split > div:first-child h2 {
    margin: 0 0 14px;
    font-size: clamp(1.45rem, 2.2vw, 1.95rem);
    line-height: 1.25;
}
.media-split > div:first-child p {
    margin: 0;
    font-size: 1.05rem;
    line-height: 1.7;
    color: #374151;
}
.media-card {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    background: #fff;
    aspect-ratio: 16 / 11;
    max-height: 360px;
}
.media-card img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
    margin-top: 32px;
}
.stat-card {
    display: grid;
    gap: 6px;
    padding: 22px 20px;
    border-radius: 16px;
    background: #fff;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}
.stat-card strong {
    font-size: 1.8rem;
    line-height: 1;
    color: var(--bg);
}
.stat-card span {
    color: var(--text-muted);
    font-size: 0.95rem;
}
.eyebrow {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 8px;
}

.page-hero {
    background: linear-gradient(180deg, #0b1220, #1f2937);
    color: #fff;
    padding: 64px 0 48px;
}
.page-hero-sm { padding: 48px 0 36px; }
.page-hero h1 { margin: 0; font-size: clamp(1.8rem, 4vw, 2.6rem); }

.card-grid { display: grid; gap: 20px; margin-top: 28px; }
.card-grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card-grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    transition: transform 0.22s ease, box-shadow 0.22s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(15, 23, 42, 0.12); }
.card-dark { background: rgba(255,255,255,0.04); border-color: rgba(255,255,255,0.08); box-shadow: none; }
.card h2, .card h3 { margin-top: 0; font-size: 1.1rem; }
.card p { color: var(--text-muted); }
.card-product { display: flex; flex-direction: column; justify-content: space-between; min-height: 180px; }
.card-highlight {
    display: flex;
    flex-direction: column;
    min-height: 280px;
}
.card-icon-link {
    display: inline-block;
    margin-bottom: 18px;
    width: fit-content;
}
.card-icon-wrap {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: 14px;
    background: #ecfdf5;
    color: #16a34a;
}
.card-icon {
    width: 32px;
    height: 32px;
}
.card-cover-link {
    display: block;
    margin: -24px -24px 18px;
}
.card-cover {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    background: #e5e7eb;
    border-radius: 12px 12px 0 0;
}
.card-dark .card-cover {
    opacity: 0.96;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 20px;
    border-radius: 10px;
    font-weight: 600;
    border: 1px solid transparent;
    cursor: pointer;
}
.btn-sm { padding: 8px 14px; font-size: 0.92rem; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { border-color: rgba(255,255,255,0.35); color: #fff; background: transparent; }
.section:not(.section-dark) .btn-outline { border-color: var(--border); color: var(--text); }

.link-arrow { color: var(--primary); font-weight: 600; }
.testimonial {
    margin: 0;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
}
.testimonial-avatar {
    width: 84px;
    height: 84px;
    border-radius: 999px;
    object-fit: cover;
    margin-bottom: 16px;
}
.testimonial p { color: var(--text-muted); }
.testimonial footer { margin-top: 16px; }

.cta-banner {
    background: linear-gradient(90deg, #ea580c, #f97316);
    color: #fff;
    padding: 56px 0;
}
.cta-inner { text-align: center; max-width: 760px; }
.cta-inner h2 { margin: 0 0 12px; }
.cta-inner p { margin: 0 0 20px; opacity: 0.95; }

.content-body { max-width: 820px; }
/* 与 .container 同宽，避免 max-width:none 盖掉容器限制导致全屏拉伸 */
.content-body:has(.media-split) { max-width: var(--container); }
.article-cover {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-radius: 20px;
    margin-bottom: 28px;
    box-shadow: var(--shadow);
}
.article-cover[src=""] {
    display: none;
}
.content-body h2, .content-body h3 { margin-top: 1.6em; }
.content-body .media-split > div:first-child h2 { margin-top: 0; }
.content-body .media-split + .feature-grid { margin-top: 28px; }
.content-body p, .content-body li { color: #374151; }
.content-body ul { padding-left: 1.2em; }
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin: 24px 0;
}
.feature-box {
    background: var(--bg-muted);
    border-radius: var(--radius);
    padding: 24px 22px;
}
.feature-box h3 { margin: 0 0 10px; font-size: 1.08rem; line-height: 1.3; }
.feature-box p { margin: 0; color: var(--text-muted); font-size: 0.98rem; line-height: 1.55; }

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: start;
}
.contact-cards { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 16px; }
.contact-cards li {
    background: var(--bg-muted);
    border-radius: var(--radius);
    padding: 16px 18px;
}
.contact-cards h3 { margin: 0 0 6px; font-size: 0.95rem; }
.contact-form-wrap {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
}
.contact-form { display: grid; gap: 14px; margin-top: 16px; }
.contact-form label { display: grid; gap: 6px; font-weight: 600; font-size: 0.92rem; }
.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 11px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font: inherit;
}
.form-status { margin-top: 8px; font-weight: 600; }
.form-status.ok { color: #15803d; }
.form-status.err { color: #b91c1c; }

.faq-list { display: grid; gap: 12px; margin-top: 20px; }
.faq-list details {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 14px 16px;
}
.faq-list summary { cursor: pointer; font-weight: 600; }

.meta { color: var(--text-muted); font-size: 0.9rem; }
.post-list .card { margin-bottom: 0; }

.site-footer {
    background: var(--bg);
    color: #d1d5db;
    padding: 56px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr 1fr;
    gap: 24px;
    padding-bottom: 32px;
}
.footer-grid h3 { color: #fff; margin: 0 0 12px; font-size: 1rem; }
.footer-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.footer-list a:hover { color: #fff; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 18px 0 24px;
    color: #9ca3af;
    font-size: 0.92rem;
}

@media (max-width: 960px) {
    .hero-inner,
    .media-split { grid-template-columns: 1fr; }
    .hero-inner { min-height: 560px; }
    .media-card { min-height: 220px; }
    .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .card-grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .card-grid-3, .feature-grid, .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
    .nav-toggle { display: block; }
    .main-nav {
        display: none;
        position: absolute;
        top: 72px; left: 0; right: 0;
        background: #0b1220;
        padding: 16px 20px 20px;
        border-bottom: 1px solid rgba(255,255,255,0.08);
        flex-direction: column;
        align-items: flex-start;
    }
    .main-nav.is-open { display: flex; }
    .nav-dropdown { width: 100%; }
    .nav-dropdown-menu {
        position: static;
        margin-top: 8px;
        box-shadow: none;
    }
    .header-phone { display: none; }
    .card-grid-2, .card-grid-3, .card-grid-4, .feature-grid, .footer-grid {
        grid-template-columns: 1fr;
    }
    .stats-grid { grid-template-columns: 1fr; }
    .card-cover-link {
        margin-bottom: 16px;
    }
    .hero {
        padding: 76px 0 64px;
    }
    .hero-inner {
        min-height: 520px;
    }
    .hero h1, .hero-body h1 {
        font-size: clamp(2.5rem, 13vw, 3.5rem);
        margin-bottom: 20px;
    }
    .section { padding: 60px 0; }
}