:root {
    --rg-blue: #3159ad;
    --rg-blue-dark: #122c62;
    --rg-blue-ink: #0b1f46;
    --rg-cyan: #4fd4ea;
    --rg-bg: #f4f7fc;
    --rg-line: #dbe4f3;
    --rg-muted: #667692;
    --rg-white: #ffffff;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    color: var(--rg-blue-ink);
    background: var(--rg-bg);
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
}

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

button, a { -webkit-tap-highlight-color: transparent; }

.business-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, .96);
    border-bottom: 1px solid var(--rg-line);
    backdrop-filter: blur(16px);
}

.business-nav {
    width: min(1240px, calc(100% - 40px));
    min-height: 72px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 30px;
}

.business-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-right: auto;
    font-weight: 800;
    letter-spacing: .08em;
}

.business-brand-mark {
    width: 34px;
    height: 34px;
    border-radius: 11px;
    background: linear-gradient(135deg, #173f8d, #2e77ff 68%, #62e0ee);
    box-shadow: 0 9px 22px rgba(49, 89, 173, .26);
    position: relative;
}

.business-brand-mark::after {
    content: "";
    position: absolute;
    inset: 9px;
    border: 2px solid rgba(255, 255, 255, .92);
    border-radius: 50%;
}

.business-links {
    display: flex;
    align-items: center;
    gap: 26px;
    font-size: 14px;
    font-weight: 650;
}

.business-links a:hover,
.business-links a.active { color: var(--rg-blue); }

.business-language {
    display: inline-flex;
    align-items: center;
    padding: 4px;
    border: 1px solid #cbd8ef;
    border-radius: 999px;
    background: #f8fbff;
}

.business-language a {
    min-width: 46px;
    padding: 6px 10px;
    border-radius: 999px;
    text-align: center;
    font-size: 13px;
    font-weight: 750;
    color: #526786;
}

.business-language a.active {
    color: #fff;
    background: var(--rg-blue);
}

.business-hero {
    overflow: hidden;
    background:
        radial-gradient(circle at 10% 15%, rgba(80, 157, 255, .18), transparent 32%),
        linear-gradient(135deg, #0a1e44 0%, #123474 55%, #204fa8 100%);
    color: #fff;
}

.business-hero-inner {
    width: min(1240px, calc(100% - 40px));
    min-height: 650px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(0, .9fr) minmax(500px, 1.1fr);
    gap: 60px;
    align-items: center;
    padding: 80px 0;
}

.business-eyebrow {
    margin: 0 0 18px;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: #8ce9f4;
}

.business-hero h1 {
    max-width: 720px;
    margin: 0;
    font-family: Georgia, "Times New Roman", "Songti SC", serif;
    font-size: clamp(44px, 5vw, 74px);
    line-height: 1.02;
    letter-spacing: -.035em;
}

.business-hero-copy {
    max-width: 640px;
    margin: 26px 0 0;
    font-size: 18px;
    color: #d8e6ff;
}

.business-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 34px;
}

.business-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 0 24px;
    border: 1px solid transparent;
    border-radius: 10px;
    font-weight: 750;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

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

.business-button.primary {
    color: #102c63;
    background: #fff;
    box-shadow: 0 14px 32px rgba(0, 0, 0, .16);
}

.business-button.secondary {
    color: #fff;
    border-color: rgba(255, 255, 255, .42);
    background: rgba(255, 255, 255, .08);
}

.business-hero-visual {
    position: relative;
    min-width: 0;
}

.business-hero-visual img {
    display: block;
    width: 100%;
    border: 1px solid rgba(255, 255, 255, .16);
    border-radius: 22px;
    box-shadow: 0 30px 70px rgba(0, 0, 0, .32);
}

.business-proof {
    width: min(1160px, calc(100% - 40px));
    margin: -44px auto 0;
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    background: #fff;
    border: 1px solid var(--rg-line);
    border-radius: 18px;
    box-shadow: 0 18px 42px rgba(23, 53, 105, .12);
}

.business-proof article {
    padding: 26px 28px;
    border-right: 1px solid var(--rg-line);
}

.business-proof article:last-child { border-right: 0; }

.business-proof strong { display: block; font-size: 16px; }

.business-proof span { font-size: 13px; color: var(--rg-muted); }

.business-section {
    width: min(1160px, calc(100% - 40px));
    margin: 0 auto;
    padding: 105px 0 0;
}

.business-section-heading {
    max-width: 760px;
    margin-bottom: 42px;
}

.business-section-heading h2 {
    margin: 0;
    font-family: Georgia, "Times New Roman", "Songti SC", serif;
    font-size: clamp(34px, 4vw, 52px);
    line-height: 1.12;
    letter-spacing: -.025em;
}

.business-section-heading p {
    margin: 16px 0 0;
    color: var(--rg-muted);
    font-size: 17px;
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
}

.business-card {
    padding: 34px;
    background: #fff;
    border: 1px solid var(--rg-line);
    border-radius: 16px;
    box-shadow: 0 14px 35px rgba(32, 63, 117, .06);
}

.business-card-number {
    display: inline-grid;
    place-items: center;
    width: 40px;
    height: 40px;
    margin-bottom: 22px;
    border-radius: 12px;
    background: #e9f0ff;
    color: var(--rg-blue);
    font-weight: 800;
}

.business-card h3 { margin: 0; font-size: 22px; }

.business-card p { margin: 12px 0 0; color: var(--rg-muted); }

.business-audience {
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    gap: 54px;
    align-items: start;
    padding: 50px;
    border-radius: 22px;
    color: #fff;
    background: var(--rg-blue-ink);
}

.business-audience h2 {
    margin: 0;
    font-family: Georgia, "Times New Roman", "Songti SC", serif;
    font-size: clamp(34px, 4vw, 48px);
    line-height: 1.12;
}

.business-audience p { color: #cbd8ed; }

.business-audience-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.business-audience-list div {
    min-height: 94px;
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, .13);
    border-radius: 13px;
    background: rgba(255, 255, 255, .06);
    font-weight: 700;
}

.business-process {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.business-step { padding: 26px 0 0; border-top: 3px solid #b8c8e7; }

.business-step strong { color: var(--rg-blue); font-size: 13px; letter-spacing: .12em; }

.business-step h3 { margin: 10px 0 8px; font-size: 19px; }

.business-step p { margin: 0; font-size: 14px; color: var(--rg-muted); }

.business-contact {
    margin-top: 105px;
    padding: 70px 0;
    color: #fff;
    background: linear-gradient(135deg, #183a7a, #3159ad);
}

.business-contact-inner {
    width: min(1160px, calc(100% - 40px));
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 70px;
    align-items: center;
}

.business-contact h2 {
    margin: 0;
    font-family: Georgia, "Times New Roman", "Songti SC", serif;
    font-size: clamp(36px, 4vw, 54px);
    line-height: 1.08;
}

.business-contact p { max-width: 740px; color: #dce8ff; }

.business-contact ul { margin: 24px 0 0; padding-left: 20px; color: #dce8ff; }

.business-qr {
    padding: 18px;
    border-radius: 16px;
    color: var(--rg-blue-ink);
    background: #fff;
    text-align: center;
    box-shadow: 0 20px 45px rgba(0, 0, 0, .2);
}

.business-qr img { display: block; width: 100%; border-radius: 10px; }

.business-qr strong { display: block; margin-top: 12px; }

.business-qr span { display: block; font-size: 13px; color: var(--rg-muted); }

.business-footer {
    padding: 34px 20px;
    background: #081a3b;
    color: #9fb1d0;
    text-align: center;
    font-size: 13px;
}

@media (max-width: 1040px) {
    .business-links { display: none; }
    .business-hero-inner { grid-template-columns: 1fr; min-height: 0; }
    .business-hero-copy { max-width: 760px; }
    .business-hero-visual { max-width: 820px; }
    .business-proof { grid-template-columns: repeat(2, 1fr); }
    .business-proof article:nth-child(2) { border-right: 0; }
    .business-proof article:nth-child(-n+2) { border-bottom: 1px solid var(--rg-line); }
    .business-audience { grid-template-columns: 1fr; }
    .business-process { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
    .business-nav { width: min(100% - 24px, 1240px); min-height: 64px; }
    .business-brand { font-size: 14px; }
    .business-brand-mark { width: 30px; height: 30px; }
    .business-language a { min-width: 42px; padding: 5px 8px; }
    .business-hero-inner { width: min(100% - 28px, 1240px); padding: 60px 0 78px; gap: 38px; }
    .business-hero h1 { font-size: 42px; }
    .business-hero-copy { font-size: 16px; }
    .business-button { width: 100%; }
    .business-proof { width: min(100% - 28px, 1160px); grid-template-columns: 1fr; margin-top: -36px; }
    .business-proof article { border-right: 0; border-bottom: 1px solid var(--rg-line); }
    .business-proof article:last-child { border-bottom: 0; }
    .business-section { width: min(100% - 28px, 1160px); padding-top: 76px; }
    .business-grid, .business-process { grid-template-columns: 1fr; }
    .business-card { padding: 26px; }
    .business-audience { padding: 32px 24px; }
    .business-audience-list { grid-template-columns: 1fr; }
    .business-contact { margin-top: 76px; padding: 58px 0; }
    .business-contact-inner { width: min(100% - 28px, 1160px); grid-template-columns: 1fr; gap: 38px; }
    .business-qr { max-width: 320px; }
}