/* 全站通用: 设计变量 / header / footer / 公共按钮 */
:root {
    --pc-blue: #2563EB;
    --pc-blue-hover: #1D4ED8;
    --pc-blue-bright: #3B82F6;
    --pc-navy: #0D1440;
    --pc-hero-from: #0B1E5B;
    --pc-hero-to: #060E2E;
    --pc-ink: #1F2937;
    --pc-muted: #6B7280;
    --pc-border: #E5E7EB;
    --pc-bg-soft: #F4F6F9;
}

body {
    font-family: 'Montserrat', 'Segoe UI', Arial, sans-serif;
    color: var(--pc-ink);
}

h1, h2, h3, h4, h5, h6, .pc-logo-text {
    font-weight: 800;
}

a {
    --bs-link-color-rgb: 37, 99, 235;
}

/* 按钮 */
.btn.pc-btn-blue {
    background: var(--pc-blue);
    border: none;
    border-radius: 8px;
    color: #fff;
    font-weight: 700;
    font-size: .82rem;
    letter-spacing: .04em;
    padding: .6rem 1.4rem;
}

.btn.pc-btn-blue:hover {
    background: var(--pc-blue-hover);
    color: #fff;
}

.btn.pc-btn-ghost {
    background: transparent;
    border: 1.5px solid rgba(255, 255, 255, .75);
    border-radius: 8px;
    color: #fff;
    font-weight: 700;
    font-size: .82rem;
    letter-spacing: .04em;
    padding: .6rem 1.4rem;
}

.btn.pc-btn-ghost:hover {
    background: rgba(255, 255, 255, .12);
    color: #fff;
    border-color: #fff;
}

/* header */
.pc-header {
    background: #fff;
    border-bottom: 1px solid var(--pc-border);
}

.pc-logo {
    display: inline-block;
    line-height: 1.15;
}

.pc-logo-text {
    font-size: 1.4rem;
    color: #1A2B6B;
    letter-spacing: .03em;
}

.pc-logo-text span {
    color: var(--pc-blue-bright);
}

.pc-logo small {
    display: block;
    font-size: .62rem;
    font-weight: 600;
    color: var(--pc-muted);
    letter-spacing: .05em;
}

.pc-nav-link {
    color: var(--pc-ink);
    font-size: .8rem;
    font-weight: 700;
    letter-spacing: .06em;
    padding: 1.4rem .8rem !important;
    border-bottom: 3px solid transparent;
}

.pc-nav-link:hover {
    color: var(--pc-blue);
}

.pc-nav-link.active {
    color: var(--pc-blue);
    border-bottom-color: var(--pc-blue);
}

.pc-btn-contact {
    font-size: .78rem;
    padding: .45rem 1.1rem;
}

@media (max-width: 991.98px) {
    .pc-nav-link {
        padding: .6rem .25rem !important;
        border-bottom: none;
    }

    .pc-nav-link.active {
        border-bottom: none;
    }
}

/* footer */
.pc-footer {
    background: var(--pc-navy);
    color: #B9C4D8;
    font-size: .86rem;
}

.pc-footer .pc-logo-text {
    color: #fff;
    font-size: 1.3rem;
}

.pc-footer h6 {
    color: #fff;
    font-size: .82rem;
    letter-spacing: .08em;
    margin-bottom: 1rem;
}

.pc-footer a {
    color: #B9C4D8;
    text-decoration: none;
}

.pc-footer a:hover {
    color: #fff;
}

.pc-footer ul li {
    margin-bottom: .45rem;
}

.pc-footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: .5rem;
}

.pc-footer-contact i {
    color: #8FA3D9;
    margin-top: .15rem;
}

.pc-footer-note {
    color: #8FA3D9;
    font-size: .8rem;
}

.pc-social {
    display: flex;
    gap: .6rem;
}

.pc-social a {
    width: 2rem;
    height: 2rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, .35);
    border-radius: 50%;
    color: #fff;
    font-size: .85rem;
}

.pc-social a:hover {
    background: var(--pc-blue);
    border-color: var(--pc-blue);
}

.pc-footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .12);
    font-size: .8rem;
    color: #8A97AF;
}

/* 全站通用 CTA 横幅(亮蓝) */
.pc-cta-band {
    background: var(--pc-blue);
    color: #fff;
    padding: 2.6rem 0;
}

.pc-cta-band i.bi-envelope {
    font-size: 2.4rem;
    color: #fff;
}

.pc-cta-band h4 {
    margin-bottom: 0;
}

.pc-cta-band p {
    color: #D3E2FB;
    font-size: .9rem;
}

.btn.pc-btn-white {
    background: #fff;
    color: var(--pc-blue);
    border-radius: 8px;
    font-weight: 700;
    font-size: .85rem;
    padding: .6rem 1.5rem;
}

.btn.pc-btn-white:hover {
    background: #EAF1FE;
    color: var(--pc-blue-hover);
}