:root {
    --home-ink: #151b36;
    --home-muted: #65718a;
    --home-primary: #5b5cf6;
    --home-primary-deep: #484ad9;
    --home-accent: #3977f6;
    --home-surface: #ffffff;
    --home-soft: #f5f5ff;
    --home-line: #e6eaf3;
}

html { scroll-behavior: smooth; }

.corporate-home-body {
    display: block;
    min-height: 100vh;
    min-height: 100dvh;
    padding: 0;
    color: var(--home-ink);
    background: linear-gradient(135deg, #f7f8fe 0%, #f3f6fd 52%, #f6f8ff 100%);
    overflow-x: hidden;
}

.corporate-home-body .public-shell { width: 100%; max-width: none; }

.corporate-home {
    min-height: 100vh;
    min-height: 100dvh;
    font-family: "Microsoft YaHei UI", "PingFang SC", "Segoe UI", sans-serif;
}

.site-header,
.site-hero,
.service-section,
.about-section,
.site-footer {
    width: min(1180px, calc(100% - 48px));
    margin-inline: auto;
}

.site-header {
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    border-bottom: 1px solid var(--home-line);
}

.site-brand {
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.site-brand-mark {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border-radius: 12px;
    color: #fff;
    background: var(--home-primary);
    font-size: 14px;
    font-weight: 800;
    letter-spacing: -.04em;
}

.site-brand-copy strong,
.site-brand-copy small { display: block; }

.site-brand-copy strong {
    font-size: 17px;
    line-height: 1.25;
    letter-spacing: .06em;
}

.site-brand-copy small {
    margin-top: 3px;
    color: #8b97ae;
    font-size: 9px;
    letter-spacing: .17em;
}

.site-nav { display: flex; align-items: center; gap: 8px; }

.site-nav a {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    padding: 0 16px;
    border-radius: 10px;
    color: #69758f;
    font-size: 14px;
    font-weight: 600;
    transition: color .18s ease, background-color .18s ease;
}

.site-nav a:hover { color: var(--home-primary-deep); background: var(--home-soft); }

.site-hero {
    min-height: 610px;
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(360px, .92fr);
    align-items: center;
    gap: 68px;
    padding-block: 88px;
}

.hero-kicker {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0 0 22px;
    color: var(--home-primary);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: .05em;
}

.hero-kicker span { width: 28px; height: 2px; background: var(--home-accent); }

.site-hero h1 {
    margin: 0;
    color: var(--home-ink);
    font-size: clamp(42px, 5.2vw, 68px);
    line-height: 1.16;
    letter-spacing: -.055em;
}

.site-hero h1 em { color: var(--home-primary); font-style: normal; }

.hero-summary {
    max-width: 620px;
    margin: 26px 0 32px;
    color: var(--home-muted);
    font-size: 17px;
    line-height: 1.85;
}

.hero-anchor {
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 0 20px;
    border: 1px solid var(--home-primary);
    border-radius: 12px;
    color: var(--home-primary-deep);
    font-size: 14px;
    font-weight: 700;
    transition: color .18s ease, background-color .18s ease;
}

.hero-anchor svg { width: 18px; height: 18px; transition: transform .18s ease; }
.hero-anchor:hover { color: #fff; background: var(--home-primary); }
.hero-anchor:hover svg { transform: translateX(3px); }

.hero-visual {
    position: relative;
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: #f0efff;
}

.hero-visual::before {
    content: "";
    position: absolute;
    inset: 12%;
    border-radius: 50%;
    border: 1px solid #deddfb;
}

.signal-orbit { position: absolute; border: 1px solid #d3d5fb; border-radius: 50%; }
.orbit-one { inset: 25%; }
.orbit-two { inset: 39%; }

.signal-core {
    position: relative;
    z-index: 2;
    width: 116px;
    height: 116px;
    display: grid;
    place-content: center;
    text-align: center;
    border-radius: 34px;
    color: #fff;
    background: var(--home-primary);
    background: linear-gradient(145deg, #5065f4, #8059ed);
    box-shadow: 0 18px 40px rgba(91, 92, 246, .24);
}

.signal-core span,
.signal-core small { display: block; }
.signal-core span { font-size: 28px; font-weight: 800; letter-spacing: -.04em; }
.signal-core small { margin-top: 5px; font-size: 8px; letter-spacing: .18em; opacity: .8; }

.signal-node {
    position: absolute;
    z-index: 3;
    width: 14px;
    height: 14px;
    border: 4px solid #fff;
    border-radius: 50%;
    background: var(--home-accent);
    box-shadow: 0 4px 14px rgba(91, 92, 246, .22);
}

.node-one { top: 17%; left: 33%; }
.node-two { top: 46%; right: 10%; }
.node-three { bottom: 15%; left: 30%; }

.service-section { padding-block: 88px; border-top: 1px solid var(--home-line); }

.section-heading p,
.about-label {
    margin: 0 0 10px;
    color: var(--home-primary);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .18em;
}

.section-heading h2,
.about-section h2 {
    margin: 0;
    font-size: clamp(28px, 3vw, 40px);
    line-height: 1.3;
    letter-spacing: -.035em;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin-top: 40px;
}

.service-card {
    min-height: 220px;
    padding: 30px;
    border: 1px solid var(--home-line);
    border-radius: 18px;
    background: var(--home-surface);
    transition: border-color .2s ease, background-color .2s ease, transform .2s ease;
}

.service-card:hover { border-color: #c9cafa; background: var(--home-soft); transform: translateY(-3px); }
.service-number { display: block; color: var(--home-accent); font-size: 12px; font-weight: 800; letter-spacing: .12em; }
.service-card h3 { margin: 42px 0 10px; font-size: 21px; }
.service-card p { margin: 0; color: var(--home-muted); font-size: 15px; line-height: 1.75; }

.about-section {
    display: grid;
    grid-template-columns: minmax(220px, .75fr) minmax(0, 1.25fr);
    gap: 80px;
    align-items: start;
    margin-bottom: 88px;
    padding: 56px;
    border-radius: 24px;
    background: var(--home-soft);
}

.about-section > p {
    max-width: 690px;
    margin: 0;
    color: #5f6b83;
    font-size: 16px;
    line-height: 1.95;
}

.site-footer {
    min-height: 108px;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 24px;
    border-top: 1px solid var(--home-line);
    color: #8b97ae;
    font-size: 13px;
}

.site-footer span { color: var(--home-ink); font-weight: 800; }
.site-footer p,
.site-footer small { margin: 0; }
.site-footer small { font-size: 10px; letter-spacing: .09em; }

@media (max-width: 900px) {
    .site-hero { min-height: auto; grid-template-columns: 1fr; gap: 56px; padding-block: 72px; }
    .hero-copy { max-width: 700px; }
    .hero-visual { width: min(480px, 82vw); justify-self: center; }
    .about-section { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 680px) {
    .site-header,
    .site-hero,
    .service-section,
    .about-section,
    .site-footer { width: min(100% - 32px, 1180px); }
    .site-header { min-height: 72px; }
    .site-nav { display: none; }
    .site-hero { gap: 44px; padding-block: 56px 64px; }
    .site-hero h1 { font-size: clamp(38px, 12vw, 52px); line-height: 1.2; }
    .hero-summary { margin-block: 22px 28px; font-size: 16px; }
    .hero-visual { width: min(390px, 90vw); }
    .signal-core { width: 92px; height: 92px; border-radius: 28px; }
    .service-section { padding-block: 64px; }
    .service-grid { grid-template-columns: 1fr; margin-top: 28px; }
    .service-card { min-height: 0; padding: 24px; }
    .service-card h3 { margin-top: 28px; }
    .about-section { margin-bottom: 64px; padding: 32px 24px; border-radius: 18px; }
    .site-footer { grid-template-columns: 1fr; gap: 8px; padding-block: 28px; }
}

@media (max-width: 390px) {
    .site-header,
    .site-hero,
    .service-section,
    .about-section,
    .site-footer { width: min(100% - 24px, 1180px); }
    .site-brand-copy small { letter-spacing: .12em; }
    .site-hero h1 { font-size: 36px; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .site-nav a,
    .hero-anchor,
    .hero-anchor svg,
    .service-card { transition: none; }
}