:root {
    --blue: #2878f0;
    --blue-dark: #1559bd;
    --ink: #152238;
    --muted: #5e6c80;
    --line: #dfe5ee;
    --soft: #f5f8fc;
    --teal: #0f9b8e;
    --footer: #182438;
    --content: 1200px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--ink);
    background: #fff;
    font-family: "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
button, summary { font: inherit; }
.content-width { width: min(calc(100% - 40px), var(--content)); margin-inline: auto; }
.skip-link {
    position: fixed; left: 12px; top: -80px; z-index: 1000;
    padding: 10px 16px; color: #fff; background: var(--ink);
}
.skip-link:focus { top: 12px; }
.primary-button, .text-button, .cta-primary, .cta-secondary {
    display: inline-flex; min-height: 42px; padding: 9px 20px; align-items: center; justify-content: center;
    border: 1px solid var(--blue); border-radius: 6px; font-weight: 700; transition: background .2s, color .2s, border-color .2s;
}
.primary-button, .text-button { color: #fff; background: var(--blue); }
.primary-button:hover, .text-button:hover { background: var(--blue-dark); border-color: var(--blue-dark); }
.breadcrumb { display: flex; gap: 9px; padding-block: 20px; color: #758197; font-size: 13px; }
.breadcrumb a:hover { color: var(--blue); }
.page-modules { display: flex; flex-direction: column; }
.module-section { padding: 76px 0; }
.section-heading { margin: 0 auto 36px; text-align: center; }
.section-heading h2, .intro-copy h2 { margin: 0; font-size: 30px; line-height: 1.35; }
.section-heading p { max-width: 760px; margin: 10px auto 0; color: var(--muted); }
.hero { padding: 0; background: #edf4ff; overflow: hidden; }
.hero-inner { min-height: 520px; display: grid; grid-template-columns: 1fr 1.05fr; align-items: center; gap: 76px; }
.hero-copy { padding: 64px 0 72px; }
.eyebrow { margin: 0 0 12px; color: var(--teal); font-size: 14px; font-weight: 800; }
.hero h1 { max-width: 650px; margin: 0; font-size: clamp(34px, 4vw, 50px); line-height: 1.24; }
.hero-subtitle, .geo-summary { max-width: 650px; margin: 18px 0 0; color: #43546b; font-size: 17px; }
.geo-summary { font-size: 15px; }
.hero .primary-button { margin-top: 30px; }
.hero-media { min-height: 390px; display: grid; place-items: center; }
.hero-media img { width: 100%; max-height: 450px; object-fit: contain; }
.hero-media.media-empty > div {
    width: 100%; aspect-ratio: 4 / 3; display: grid; place-items: center;
    color: var(--blue); background: #fff; border: 1px solid #cddcf3; font-size: 24px; font-weight: 700;
}
.capabilities { background: #fff; }
.capability-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 16px; }
.capability-item {
    min-height: 156px; display: flex; gap: 15px; padding: 22px;
    border: 1px solid var(--line); border-radius: 6px; background: #fff;
}
.capability-item:hover { border-color: var(--blue); box-shadow: 0 8px 24px rgba(32,76,145,.09); }
.item-icon {
    flex: 0 0 42px; width: 42px; height: 42px; display: grid; place-items: center;
    color: var(--blue); background: #eaf2ff; border-radius: 50%; font-weight: 800;
}
.item-icon img { width: 26px; height: 26px; object-fit: contain; }
.capability-item h3 { margin: 0; font-size: 17px; }
.capability-item p { margin: 7px 0 0; color: var(--muted); font-size: 14px; line-height: 1.65; }
.introductions { padding: 28px 0; }
.intro-row {
    min-height: 430px; display: grid; grid-template-columns: 1fr 1fr; align-items: center;
    gap: 82px; padding: 64px 0; border-bottom: 1px solid #edf0f4;
}
.intro-row.reverse .intro-copy { order: 2; }
.intro-row.reverse .intro-media { order: 1; }
.intro-copy p { margin: 16px 0 0; color: var(--muted); }
.intro-copy ul { margin: 22px 0; padding: 0; list-style: none; }
.intro-copy li { position: relative; margin: 9px 0; padding-left: 18px; }
.intro-copy li::before { content: ""; position: absolute; left: 0; top: .75em; width: 6px; height: 6px; border-radius: 50%; background: var(--blue); }
.intro-media { margin: 0; background: var(--soft); }
.intro-media img { width: 100%; aspect-ratio: 3 / 2; object-fit: contain; }
.article-navigation { background: var(--soft); }
.article-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 18px; }
.article-link {
    display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: center;
    min-height: 86px; padding: 18px 20px; background: #fff; border: 1px solid #e8edf4; border-radius: 6px;
}
.article-link h3 { min-width: 0; margin: 0; overflow-wrap: anywhere; font-size: 16px; }
.article-link a { color: var(--blue); font-weight: 700; white-space: nowrap; }
.steps-layout { display: grid; grid-template-columns: minmax(330px, .85fr) 1.15fr; gap: 68px; align-items: center; }
.step-list { margin: 0; padding: 0; list-style: none; }
.step-list li { position: relative; display: grid; grid-template-columns: 48px 1fr; gap: 18px; padding-bottom: 28px; }
.step-list li:not(:last-child)::after { content: ""; position: absolute; left: 23px; top: 46px; bottom: 2px; width: 2px; background: #bad2f8; }
.step-number {
    position: relative; z-index: 1; width: 48px; height: 48px; display: grid; place-items: center;
    color: #fff; background: var(--blue); border-radius: 50%; font-size: 19px; font-weight: 800;
}
.step-list h3 { margin: 1px 0 4px; font-size: 18px; }
.step-list p { margin: 0; color: var(--muted); }
.step-images { min-height: 340px; display: flex; justify-content: center; align-items: center; }
.step-images img { width: min(38%, 250px); max-height: 480px; object-fit: contain; filter: drop-shadow(0 18px 28px rgba(24,48,84,.16)); }
.step-images img + img { margin-left: -7%; }
.stats { color: #fff; background: #236be1; }
.section-heading.light p { color: #dbe8ff; }
.stats-grid { margin: 0; display: grid; grid-template-columns: repeat(4,1fr); }
.stats-grid > div { padding: 8px 20px; text-align: center; border-right: 1px solid rgba(255,255,255,.24); }
.stats-grid > div:last-child { border-right: 0; }
.stats-grid dd { margin: 0; font-size: 34px; line-height: 1.2; font-weight: 800; }
.stats-grid dt { margin-top: 8px; color: #e7f0ff; font-size: 14px; }
.faq { background: #f6f8fb; }
.faq-inner { max-width: 1040px; }
.faq-list details { background: #fff; border-bottom: 1px solid var(--line); }
.faq-list summary {
    display: flex; align-items: center; gap: 16px; padding: 21px 24px;
    cursor: pointer; list-style: none; font-size: 17px; font-weight: 700;
}
.faq-list summary::-webkit-details-marker { display: none; }
.question-index {
    flex: 0 0 40px; width: 40px; height: 40px; display: grid; place-items: center;
    color: #fff; background: var(--blue); border-radius: 50%; font-size: 14px;
}
.answer { padding: 0 24px 24px 80px; color: var(--muted); white-space: pre-line; }
.cta { color: #fff; background: #355fe8; text-align: center; }
.cta h2 { margin: 0; font-size: 34px; }
.cta p { margin: 10px 0 0; color: #e7edff; }
.cta-actions { display: flex; justify-content: center; gap: 12px; margin-top: 25px; }
.cta-primary { color: var(--blue-dark); background: #fff; border-color: #fff; }
.cta-secondary { color: #fff; background: transparent; border-color: rgba(255,255,255,.75); }
.not-found { min-height: calc(100vh - 250px); display: grid; place-items: center; align-content: center; padding: 60px 20px; text-align: center; }
.error-code { margin: 0; color: var(--blue); font-size: 80px; line-height: 1; font-weight: 800; }
.not-found h1 { margin: 18px 0 6px; }
.not-found .primary-button { margin-top: 20px; }

@media (max-width: 1050px) {
    .hero-inner { gap: 38px; }
    .capability-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 780px) {
    .content-width { width: min(calc(100% - 30px), var(--content)); }
    .breadcrumb { padding-block: 14px; overflow: hidden; white-space: nowrap; }
    .module-section { padding: 54px 0; }
    .section-heading { margin-bottom: 28px; }
    .section-heading h2, .intro-copy h2 { font-size: 25px; }
    .hero-inner { min-height: 0; grid-template-columns: 1fr; gap: 10px; padding-block: 38px; }
    .hero-copy { padding: 0; }
    .hero h1 { font-size: 34px; }
    .hero-media { min-height: 0; }
    .hero-media img { max-height: 320px; }
    .capability-grid, .article-grid { grid-template-columns: 1fr; }
    .capability-item { min-height: 0; }
    .intro-row, .intro-row.reverse { min-height: 0; grid-template-columns: 1fr; gap: 30px; padding: 48px 0; }
    .intro-row.reverse .intro-copy, .intro-row.reverse .intro-media { order: initial; }
    .steps-layout { grid-template-columns: 1fr; gap: 30px; }
    .step-images img { width: min(45%, 220px); }
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 28px 0; }
    .stats-grid > div:nth-child(2) { border-right: 0; }
    .stats-grid dd { font-size: 28px; }
    .answer { padding-left: 24px; }
    .cta h2 { font-size: 28px; }
}
@media (max-width: 480px) {
    .capability-grid { gap: 10px; }
    .article-link { grid-template-columns: 1fr; gap: 8px; }
    .stats-grid { grid-template-columns: 1fr; }
    .stats-grid > div { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.24); }
    .stats-grid > div:last-child { border-bottom: 0; }
    .cta-actions { flex-direction: column; align-items: stretch; }
}