:root {
    --blue-950: #06162f;
    --blue-900: #062a66;
    --blue-850: #08387e;
    --blue-800: #0a499f;
    --blue-700: #0b56c7;
    --blue-600: #1b6ff0;
    --blue-500: #4a95ff;
    --blue-100: #eaf2ff;
    --blue-050: #f5f8ff;
    --text: #14213d;
    --muted: #667085;
    --line: #e4e7ec;
    --white: #fff;
    --shadow: 0 18px 44px rgba(6, 42, 102, .10);
    --radius: 22px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text);
    background: #fff;
    line-height: 1.75;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }
.narrow { width: min(860px, calc(100% - 32px)); }
h1, h2, h3, h4, p { word-break: break-word; }
.topbar { background: var(--blue-950); color: rgba(255,255,255,.84); font-size: 14px; }
.topbar-inner { min-height: 42px; display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.topbar-links { display: flex; gap: 20px; flex-wrap: wrap; }
.topbar a { color: #fff; }
.site-header { position: sticky; top: 0; z-index: 30; }
.navbar {
    background: rgba(255,255,255,.96);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(11, 86, 199, .08);
    box-shadow: 0 8px 24px rgba(17, 24, 39, .04);
}
.nav-inner { min-height: 84px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; }
.brand-logo { width: auto; height: 58px; object-fit: contain; }
.nav-links { display: flex; align-items: center; gap: 2px; }
.nav-links a { padding: 10px 14px; border-radius: 999px; color: #344054; font-weight: 700; font-size: 15px; }
.nav-links a:hover, .nav-links a.active { background: var(--blue-100); color: var(--blue-800); }
.nav-links .nav-cta { background: linear-gradient(135deg, var(--blue-700), var(--blue-800)); color: #fff; margin-left: 8px; box-shadow: 0 10px 24px rgba(27,111,240,.22); }
.nav-links .nav-cta:hover, .nav-links .nav-cta.active { background: linear-gradient(135deg, var(--blue-800), var(--blue-900)); color: #fff; }
.nav-toggle { display: none; border: 0; background: var(--blue-100); color: var(--blue-900); padding: 9px 12px; border-radius: 10px; font-size: 22px; }
.hero-slider { position: relative; overflow: hidden; background: var(--blue-900); }
.slides { min-height: 620px; position: relative; }
.slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .6s ease, visibility .6s ease; }
.slide.active { opacity: 1; visibility: visible; }
.slide-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transform: scale(1.02); }
.slide-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(90deg, rgba(6,22,47,.88) 0%, rgba(6,42,102,.74) 38%, rgba(10,73,159,.42) 68%, rgba(10,73,159,.22) 100%);
}
.hero-content {
    min-height: 620px; position: relative; z-index: 2;
    display: grid; grid-template-columns: 1.25fr .75fr; gap: 30px; align-items: center; color: #fff;
}
.hero-copy h1 { max-width: 760px; margin: 0 0 18px; font-size: clamp(38px, 6vw, 68px); line-height: 1.08; letter-spacing: -1.5px; }
.hero-copy p { max-width: 700px; margin: 0 0 28px; font-size: 18px; color: rgba(255,255,255,.9); }
.hero-panel { display: grid; gap: 18px; }
.mini-panel {
    padding: 22px; border-radius: 20px;
    background: rgba(255,255,255,.10);
    border: 1px solid rgba(255,255,255,.18);
    box-shadow: inset 0 1px 0 rgba(255,255,255,.08);
}
.mini-panel strong { display: block; font-size: 15px; margin-bottom: 6px; }
.mini-panel span { color: rgba(255,255,255,.82); font-size: 15px; }
.eyebrow {
    display: inline-flex; width: fit-content; align-items: center; gap: 8px; margin-bottom: 14px;
    font-size: 13px; text-transform: uppercase; letter-spacing: .12em; font-weight: 800;
}
.eyebrow { color: rgba(255,255,255,.84); }
.eyebrow.blue { color: var(--blue-700); }
.eyebrow.light { color: rgba(255,255,255,.86); }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
    display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 22px;
    border-radius: 999px; font-weight: 800; border: 1px solid transparent; cursor: pointer;
    transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: linear-gradient(135deg, var(--blue-700), var(--blue-800)); color: #fff; box-shadow: 0 12px 28px rgba(19,105,232,.24); }
.btn-primary:hover { background: linear-gradient(135deg, var(--blue-800), var(--blue-900)); }
.btn-light { background: rgba(255,255,255,.12); color: #fff; border-color: rgba(255,255,255,.26); }
.btn-light:hover { background: rgba(255,255,255,.18); }
.btn-white { background: #fff; color: var(--blue-800); }
.btn-white:hover { background: #eef4ff; }
.slider-dots { position: absolute; left: 50%; bottom: 28px; transform: translateX(-50%); display: flex; gap: 10px; z-index: 5; }
.slider-dots button { width: 34px; height: 6px; border: 0; border-radius: 99px; background: rgba(255,255,255,.36); cursor: pointer; }
.slider-dots button.active { background: #fff; }
.section { padding: 86px 0; }
.bg-soft { background: var(--blue-050); }
.bg-blue { background: linear-gradient(135deg, var(--blue-900), var(--blue-700)); color: #fff; }
.section-head { text-align: center; margin-bottom: 40px; }
.section-head h2 { margin: 0 auto 12px; max-width: 780px; font-size: clamp(30px, 4vw, 44px); line-height: 1.18; letter-spacing: -.8px; color: var(--blue-900); }
.section-head p { margin: 0 auto; max-width: 760px; color: var(--muted); font-size: 17px; }
.split-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; text-align: left; }
.split-head h2, .split-head p { margin-left: 0; }
.link-more { color: var(--blue-700); font-weight: 800; white-space: nowrap; }
.stats-section { padding: 32px 0; background: #fff; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stat-card {
    border: 1px solid rgba(11,86,199,.09); border-radius: var(--radius); padding: 22px; background: #fff;
    box-shadow: 0 10px 28px rgba(16,24,40,.05);
}
.stat-card strong { display: block; font-size: 30px; color: var(--blue-800); margin-bottom: 4px; }
.stat-card span { color: var(--muted); }
.cards { display: grid; gap: 22px; }
.service-cards { grid-template-columns: repeat(4, 1fr); }
.card, .case-card, .article-card, .company-card, .contact-form, .contact-info, .case-row, .article-row, .compare-box, .feature-list > div, .values-grid article, .process-grid article, .deliver-grid article, .showcase-card, .cta-inline {
    background: #fff; border: 1px solid rgba(11,86,199,.08); border-radius: var(--radius); box-shadow: var(--shadow);
}
.card { padding: 28px; }
.icon {
    width: 48px; height: 48px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
    background: var(--blue-100); color: var(--blue-800); font-weight: 900; margin-bottom: 18px;
}
.card h3, .case-card h3, .article-card h3, .deliver-grid h3 { margin: 0 0 10px; color: var(--blue-900); }
.card p, .case-card p, .article-card p, .deliver-grid p { color: var(--muted); margin: 0; }
.showcase-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; align-items: center; }
.showcase-grid h2 { margin: 0 0 14px; font-size: clamp(28px, 4vw, 40px); color: var(--blue-900); line-height: 1.2; }
.showcase-grid p { margin: 0 0 16px; color: var(--muted); }
.showcase-card, .about-media, .contact-media, .page-hero-media { overflow: hidden; }
.showcase-card img, .about-media img, .contact-media img, .page-hero-media img { width: 100%; height: 100%; object-fit: cover; }
.showcase-card img { min-height: 360px; }
.check-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.check-list li { position: relative; padding-left: 28px; color: #344054; }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--blue-700); font-weight: 900; }
.case-cards { grid-template-columns: repeat(3, 1fr); }
.case-card { overflow: hidden; }
.card-media { aspect-ratio: 4 / 3; overflow: hidden; background: #dce8ff; }
.card-media img { width: 100%; height: 100%; object-fit: cover; }
.case-card-body { padding: 24px; }
.case-card > span, .case-tag {
    display: inline-flex; padding: 6px 12px; border-radius: 999px; background: var(--blue-100); color: var(--blue-800);
    font-size: 13px; font-weight: 800; margin-bottom: 12px;
}
.case-meta { margin-top: 16px; color: var(--muted); }
.case-meta strong { display: block; color: var(--text); }
.article-cards { grid-template-columns: repeat(3, 1fr); }
.article-card { padding: 26px; }
.article-category { display: inline-flex; color: var(--blue-700); font-weight: 800; font-size: 13px; margin-bottom: 10px; }
.article-card a:hover, .article-row a:hover { color: var(--blue-700); }
.article-card time, .article-row time { color: var(--muted); font-size: 14px; }
.cta-section .cta-box { display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.cta-section h2 { margin: 0 0 8px; font-size: clamp(28px, 4vw, 42px); line-height: 1.2; }
.cta-section p { margin: 0; color: rgba(255,255,255,.82); max-width: 650px; }
.faq-list { display: grid; gap: 14px; }
.faq-list.compact { max-width: 920px; }
details {
    border: 1px solid rgba(11,86,199,.10); border-radius: 18px; padding: 18px 22px; background: #fff;
    box-shadow: 0 10px 26px rgba(16,24,40,.04);
}
summary { cursor: pointer; font-weight: 900; color: var(--blue-900); }
details p { color: var(--muted); margin: 12px 0 0; }
.page-hero { padding: 90px 0; background: linear-gradient(135deg, var(--blue-900), var(--blue-700)); color: #fff; }
.page-hero h1 { margin: 0 0 14px; font-size: clamp(34px, 5vw, 56px); line-height: 1.14; }
.page-hero p { margin: 0; max-width: 760px; color: rgba(255,255,255,.88); font-size: 18px; }
.page-hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 28px; align-items: center; }
.page-hero-media { min-height: 280px; border-radius: 22px; }
.page-hero-media.small { min-height: 240px; }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.process-grid article { padding: 28px; }
.process-grid span { color: var(--blue-700); font-size: 28px; font-weight: 900; }
.process-grid h3 { margin: 12px 0 8px; color: var(--blue-900); }
.process-grid p { color: var(--muted); margin: 0; }
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.feature-list > div { padding: 30px; }
.feature-list h3 { margin: 0 0 10px; color: var(--blue-900); }
.feature-list p { margin: 0; color: var(--muted); }
.compare-box { padding: 34px; display: grid; grid-template-columns: 1fr 1.1fr; gap: 30px; align-items: center; }
.compare-box h2 { margin-top: 0; color: var(--blue-900); }
.compare-box p { color: var(--muted); }
.compare-table { display: grid; gap: 12px; }
.compare-table div { padding: 18px; border-radius: 16px; background: var(--blue-050); display: grid; grid-template-columns: 120px 1fr; gap: 16px; }
.compare-table strong { color: var(--blue-800); }
.deliver-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.deliver-grid article { padding: 26px; }
.case-list, .article-list { display: grid; gap: 20px; }
.detailed-case-list { gap: 28px; }
.case-row { display: grid; grid-template-columns: 350px 1fr; gap: 26px; padding: 24px; }
.case-image-wrap { border-radius: 18px; overflow: hidden; background: #dce8ff; }
.case-image-wrap img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; }
.case-row h2, .article-row h2 { margin: 0 0 10px; color: var(--blue-900); }
.case-row p, .article-row p { margin: 0; color: var(--muted); }
.case-row dl { display: grid; gap: 10px; margin: 18px 0 0; }
.case-row dl div { display: grid; grid-template-columns: 110px 1fr; gap: 14px; }
.case-row dt { color: var(--blue-800); font-weight: 900; }
.case-row dd { margin: 0; color: var(--muted); }
.article-row { display: flex; justify-content: space-between; gap: 28px; padding: 28px; }
.article-hero { padding: 84px 0; background: linear-gradient(180deg, #f6f9ff 0%, #ffffff 100%); }
.article-hero h1 { margin: 0 0 14px; font-size: clamp(32px, 5vw, 52px); color: var(--blue-900); line-height: 1.18; }
.article-hero p { color: var(--muted); font-size: 18px; }
.article-hero time { color: var(--muted); }
.content-body { font-size: 17px; }
.content-body h2 { color: var(--blue-900); margin-top: 36px; }
.content-body p { color: #344054; }
.article-note { margin-top: 34px; padding: 18px; border-radius: 16px; background: var(--blue-050); color: #344054; }
.cta-inline { padding: 28px; text-align: center; }
.cta-inline h2 { margin-top: 0; color: var(--blue-900); }
.cta-inline p { color: var(--muted); }
.about-grid { display: grid; grid-template-columns: 1.4fr .8fr; gap: 28px; align-items: start; }
.about-grid.enhanced h2 { color: var(--blue-900); margin-top: 0; }
.about-grid p { color: var(--muted); }
.about-media { margin-top: 24px; border-radius: 22px; overflow: hidden; min-height: 300px; }
.company-card { padding: 28px; }
.company-card h3 { margin-top: 0; color: var(--blue-900); }
.company-card p { margin: 10px 0; }
.values-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.values-grid article { padding: 28px; }
.values-grid h3 { color: var(--blue-900); margin-top: 0; }
.values-grid p { color: var(--muted); margin-bottom: 0; }
.contact-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: 28px; align-items: start; }
.contact-info, .contact-form { padding: 32px; }
.contact-info h2, .contact-form h3 { color: var(--blue-900); margin-top: 0; }
.info-list { margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line); }
.info-list p { margin: 10px 0; }
.contact-media { margin-top: 24px; border-radius: 18px; overflow: hidden; }
.contact-form { display: grid; gap: 16px; }
.contact-form label { display: grid; gap: 8px; font-weight: 800; color: #344054; }
.contact-form input, .contact-form textarea {
    width: 100%; border: 1px solid #d0d5dd; border-radius: 12px; padding: 12px 14px; font: inherit; outline: none; background: #fff;
}
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--blue-600); box-shadow: 0 0 0 4px rgba(19,105,232,.12); }
.alert { padding: 12px 14px; border-radius: 12px; font-weight: 700; }
.alert.success { background: #ecfdf3; color: #027a48; }
.alert.error { background: #fef3f2; color: #b42318; }
.form-tip { font-size: 14px; color: var(--muted); margin: 0; }
.site-footer { background: #071b3d; color: rgba(255,255,255,.76); }
.footer-grid { display: grid; grid-template-columns: 1.1fr .8fr 1fr; gap: 28px; padding: 54px 0; }
.footer-logo { height: 62px; width: auto; margin-bottom: 12px; filter: brightness(0) invert(1); }
.site-footer h4 { color: #fff; margin: 0 0 12px; }
.site-footer p { margin: 8px 0; }
.site-footer a { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); }
.footer-bottom-inner { min-height: 54px; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 14px; }
.footer-legal { display: flex; gap: 16px; flex-wrap: wrap; }
.lazy-image { opacity: 0; filter: blur(12px); transition: opacity .45s ease, filter .45s ease; }
.lazy-image.loaded, .slide.active .slide-bg:not(.lazy-image) { opacity: 1; filter: blur(0); }
.reveal-item { opacity: 0; transform: translateY(24px); transition: opacity .5s ease, transform .5s ease; }
.reveal-item.is-visible { opacity: 1; transform: translateY(0); }
@media (max-width: 1080px) {
    .service-cards, .case-cards, .article-cards, .stats-grid, .process-grid, .deliver-grid { grid-template-columns: repeat(2, 1fr); }
    .hero-content, .page-hero-grid, .showcase-grid, .contact-grid, .about-grid, .compare-box { grid-template-columns: 1fr; }
    .hero-panel { max-width: 560px; }
    .case-row { grid-template-columns: 1fr; }
}
@media (max-width: 980px) {
    .nav-toggle { display: inline-flex; }
    .nav-links {
        display: none; position: absolute; left: 16px; right: 16px; top: 84px; padding: 14px; background: #fff;
        border: 1px solid var(--line); box-shadow: var(--shadow); border-radius: 18px; flex-direction: column; align-items: stretch;
    }
    .nav-links.open { display: flex; }
    .nav-links a { border-radius: 12px; }
    .nav-links .nav-cta { margin-left: 0; text-align: center; }
    .feature-list, .values-grid, .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
    .topbar-inner { justify-content: center; text-align: center; padding: 8px 0; }
    .topbar-links { justify-content: center; }
    .brand-logo { height: 50px; }
    .slides, .hero-content { min-height: 560px; }
    .hero-copy h1 { font-size: 38px; }
    .section { padding: 60px 0; }
    .split-head, .cta-section .cta-box, .article-row { display: grid; }
    .service-cards, .case-cards, .article-cards, .stats-grid, .process-grid, .feature-list, .values-grid, .footer-grid, .deliver-grid { grid-template-columns: 1fr; }
    .case-row dl div, .compare-table div { grid-template-columns: 1fr; gap: 4px; }
    .footer-bottom-inner { justify-content: center; text-align: center; }
}