/* ==================== 业务范围单页样式 ==================== */

/* ---------- Banner ---------- */
.biz-banner {
    position: relative;
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #0a1628 0%, #0f2044 40%, #132d60 100%);
    overflow: hidden;
}
.biz-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 20% 50%, rgba(37,99,235,0.15) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 30%, rgba(8,145,178,0.12) 0%, transparent 55%);
    pointer-events: none;
}
.biz-banner::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}
.biz-banner .container { position: relative; z-index: 1; }
.biz-banner-inner {
    display: flex;
    align-items: center;
    gap: 60px;
    max-width: 1100px;
    margin: 0 auto;
}
.biz-banner-text { flex: 0 0 480px; }
.biz-banner-text .biz-badge {
    display: inline-block;
    font-size: 13px; font-weight: 700; color: #60a5fa;
    background: rgba(37,99,235,0.2);
    padding: 5px 18px; border-radius: 20px;
    margin-bottom: 18px; letter-spacing: 1px;
    text-transform: uppercase;
}
.biz-banner-text h1 {
    font-size: 40px; font-weight: 800; color: #fff;
    line-height: 1.3; margin-bottom: 18px;
}
.biz-banner-text h1 span {
    background: linear-gradient(135deg, #60a5fa, #22d3ee);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.biz-banner-text .biz-banner-desc {
    font-size: 17px; color: #94a3b8; line-height: 1.8;
    margin-bottom: 32px;
}
.biz-banner-text .biz-banner-btns {
    display: flex; gap: 16px; flex-wrap: wrap;
}
.biz-banner-text .biz-btn-primary {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 32px;
    background: linear-gradient(135deg, #2563eb, #0891b2);
    color: #fff; font-size: 15px; font-weight: 700;
    border-radius: 10px; text-decoration: none;
    box-shadow: 0 4px 20px rgba(37,99,235,0.35);
    transition: all 0.3s;
}
.biz-banner-text .biz-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(37,99,235,0.5);
    color: #fff; text-decoration: none;
}
.biz-banner-text .biz-btn-outline {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 32px;
    background: transparent;
    border: 1.5px solid rgba(255,255,255,0.25);
    color: #e2e8f0; font-size: 15px; font-weight: 600;
    border-radius: 10px; text-decoration: none;
    transition: all 0.3s;
}
.biz-banner-text .biz-btn-outline:hover {
    border-color: #60a5fa; color: #fff;
    background: rgba(37,99,235,0.1);
    text-decoration: none;
}
.biz-banner-visual {
    flex: 1;
    display: flex; align-items: center; justify-content: center;
}
.biz-banner-visual .biz-service-rings {
    position: relative; width: 380px; height: 380px;
}
.biz-banner-visual .biz-ring {
    position: absolute;
    border: 1.5px solid rgba(255,255,255,0.08);
    border-radius: 50%;
    animation: bizRingPulse 4s ease-in-out infinite;
}
.biz-banner-visual .biz-ring:nth-child(1) { inset: 0; animation-delay: 0s; }
.biz-banner-visual .biz-ring:nth-child(2) { inset: 50px; animation-delay: 0.6s; }
.biz-banner-visual .biz-ring:nth-child(3) { inset: 100px; animation-delay: 1.2s; }
.biz-banner-visual .biz-ring:nth-child(4) { inset: 145px; border-color: rgba(37,99,235,0.3); }
.biz-banner-visual .biz-center-icon {
    position: absolute;
    inset: 145px;
    background: linear-gradient(135deg, #2563eb, #0891b2);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 40px; color: #fff;
    box-shadow: 0 0 60px rgba(37,99,235,0.4);
}
@keyframes bizRingPulse {
    0%, 100% { transform: scale(1); opacity: 0.6; }
    50% { transform: scale(1.04); opacity: 1; }
}

/* ---------- 核心业务卡片 ---------- */
.biz-core {
    padding: 80px 0;
    background: #f8fafc;
}
.biz-section-header {
    text-align: center; margin-bottom: 56px;
}
.biz-section-label {
    display: inline-block;
    font-size: 13px; font-weight: 700; color: #2563eb;
    background: rgba(37,99,235,0.08);
    padding: 4px 18px; border-radius: 20px;
    margin-bottom: 12px; letter-spacing: 1px;
    text-transform: uppercase;
}
.biz-section-header h2 {
    font-size: 32px; font-weight: 800; color: #0f172a;
    margin-bottom: 10px;
}
.biz-section-header p {
    font-size: 16px; color: #64748b;
    max-width: 620px; margin: 0 auto;
}
.biz-core-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}
.biz-core-card {
    background: #fff;
    border-radius: 16px;
    padding: 32px 28px;
    border: 1px solid #eef2f6;
    box-shadow: 0 4px 18px rgba(0,0,0,0.05);
    display: flex; gap: 22px;
    transition: all 0.4s;
    text-decoration: none; color: inherit;
    position: relative; overflow: hidden;
}
.biz-core-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 48px rgba(0,0,0,0.1);
    border-color: transparent;
    text-decoration: none; color: inherit;
}
.biz-core-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 4px; height: 100%;
    border-radius: 4px 0 0 4px;
    transition: width 0.3s;
}
.biz-core-card:nth-child(1)::before { background: linear-gradient(180deg, #2563eb, #7c3aed); }
.biz-core-card:nth-child(2)::before { background: linear-gradient(180deg, #0891b2, #0d9488); }
.biz-core-card:nth-child(3)::before { background: linear-gradient(180deg, #7c3aed, #ec4899); }
.biz-core-card:nth-child(4)::before { background: linear-gradient(180deg, #ea580c, #dc2626); }
.biz-core-card:hover::before { width: 6px; }
.biz-core-icon {
    flex-shrink: 0;
    width: 60px; height: 60px;
    border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    font-size: 26px; color: #fff;
    margin-top: 2px;
}
.biz-core-card:nth-child(1) .biz-core-icon { background: linear-gradient(135deg, #2563eb, #7c3aed); }
.biz-core-card:nth-child(2) .biz-core-icon { background: linear-gradient(135deg, #0891b2, #0d9488); }
.biz-core-card:nth-child(3) .biz-core-icon { background: linear-gradient(135deg, #7c3aed, #ec4899); }
.biz-core-card:nth-child(4) .biz-core-icon { background: linear-gradient(135deg, #ea580c, #dc2626); }
.biz-core-body { flex: 1; }
.biz-core-body h3 {
    font-size: 18px; font-weight: 700; color: #1e293b;
    margin-bottom: 8px;
}
.biz-core-body p {
    font-size: 14px; color: #64748b; line-height: 1.7;
    margin-bottom: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.biz-core-body .biz-core-tags {
    display: flex; flex-wrap: wrap; gap: 6px;
}
.biz-core-body .biz-core-tag {
    font-size: 11px; font-weight: 600;
    padding: 3px 10px;
    border-radius: 12px;
    background: #f1f5f9; color: #475569;
}
.biz-core-body .biz-core-link {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 13px; font-weight: 600;
    margin-top: 12px;
    transition: gap 0.3s;
}
.biz-core-card:nth-child(1) .biz-core-link { color: #2563eb; }
.biz-core-card:nth-child(2) .biz-core-link { color: #0891b2; }
.biz-core-card:nth-child(3) .biz-core-link { color: #7c3aed; }
.biz-core-card:nth-child(4) .biz-core-link { color: #ea580c; }
.biz-core-card:hover .biz-core-link { gap: 10px; }
.biz-core-link:hover { text-decoration: none; }

/* ---------- 服务能力统计条 ---------- */
.biz-stats {
    padding: 60px 0;
    background: linear-gradient(135deg, #0f2044, #132d60);
    position: relative; overflow: hidden;
}
.biz-stats::before {
    content: '';
    position: absolute; inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.biz-stats .container { position: relative; z-index: 1; }
.biz-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.biz-stat-item {
    text-align: center; padding: 20px 16px;
}
.biz-stat-item .biz-stat-num {
    font-size: 40px; font-weight: 800; color: #60a5fa;
    line-height: 1.2; margin-bottom: 4px;
}
.biz-stat-item .biz-stat-label {
    font-size: 14px; color: #94a3b8; font-weight: 500;
}

/* ---------- 全业务能力 ---------- */
.biz-all-services {
    padding: 80px 0;
    background: #fff;
}
.biz-service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1000px; margin: 0 auto;
}
.biz-service-item {
    background: #f8fafc;
    border: 1px solid #eef2f6;
    border-radius: 14px;
    padding: 28px 22px;
    text-align: center;
    transition: all 0.35s;
    text-decoration: none; color: inherit;
    display: block;
}
.biz-service-item:hover {
    background: #fff;
    box-shadow: 0 8px 32px rgba(0,0,0,0.08);
    border-color: #cbd5e1;
    transform: translateY(-4px);
    text-decoration: none; color: inherit;
}
.biz-service-item .biz-sv-icon {
    width: 52px; height: 52px;
    border-radius: 14px;
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 22px; color: #fff;
    margin-bottom: 14px;
}
.biz-service-item:nth-child(1) .biz-sv-icon { background: linear-gradient(135deg, #6366f1, #8b5cf6); }
.biz-service-item:nth-child(2) .biz-sv-icon { background: linear-gradient(135deg, #06b6d4, #0ea5e9); }
.biz-service-item:nth-child(3) .biz-sv-icon { background: linear-gradient(135deg, #f59e0b, #f97316); }
.biz-service-item:nth-child(4) .biz-sv-icon { background: linear-gradient(135deg, #10b981, #14b8a6); }
.biz-service-item:nth-child(5) .biz-sv-icon { background: linear-gradient(135deg, #ec4899, #f43f5e); }
.biz-service-item:nth-child(6) .biz-sv-icon { background: linear-gradient(135deg, #6366f1, #3b82f6); }
.biz-service-item h4 {
    font-size: 16px; font-weight: 700; color: #1e293b;
    margin-bottom: 6px;
}
.biz-service-item p {
    font-size: 13px; color: #94a3b8; line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ---------- 为什么选择我们 ---------- */
.biz-why-us {
    padding: 80px 0;
    background: linear-gradient(180deg, #f8fafc 0%, #fff 100%);
}
.biz-why-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.biz-why-card {
    background: #fff;
    border: 1px solid #eef2f6;
    border-radius: 14px;
    padding: 32px 20px 24px;
    text-align: center;
    transition: all 0.3s;
    box-shadow: 0 2px 10px rgba(0,0,0,0.03);
}
.biz-why-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.08);
}
.biz-why-icon {
    width: 56px; height: 56px;
    border-radius: 14px;
    background: rgba(37,99,235,0.08);
    color: #2563eb;
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 26px;
    margin-bottom: 16px;
    transition: all 0.3s;
}
.biz-why-card:hover .biz-why-icon {
    background: linear-gradient(135deg, #2563eb, #0891b2);
    color: #fff;
    box-shadow: 0 6px 20px rgba(37,99,235,0.3);
}
.biz-why-card h4 {
    font-size: 16px; font-weight: 700; color: #1e293b;
    margin-bottom: 6px;
}
.biz-why-card p {
    font-size: 13px; color: #94a3b8; line-height: 1.6;
}

/* ---------- 技术栈 ---------- */
.biz-tech {
    padding: 70px 0;
    background: #fff;
}
.biz-tech-row {
    display: flex; flex-wrap: wrap;
    align-items: center; justify-content: center;
    gap: 32px 48px;
}
.biz-tech-row .biz-tech-item {
    display: flex; flex-direction: column;
    align-items: center; gap: 8px;
    opacity: 0.5; transition: opacity 0.3s;
}
.biz-tech-row .biz-tech-item:hover { opacity: 0.85; }
.biz-tech-row .biz-tech-dot {
    width: 10px; height: 10px;
    border-radius: 50%;
}
.biz-tech-row .biz-tech-name {
    font-size: 13px; color: #64748b; font-weight: 600;
}

/* ---------- CTA ---------- */
.biz-cta {
    padding: 80px 0;
    background: linear-gradient(135deg, #0f2044, #132d60);
    text-align: center; position: relative; overflow: hidden;
}
.biz-cta::before {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(ellipse at center, rgba(37,99,235,0.15) 0%, transparent 70%);
}
.biz-cta .container { position: relative; z-index: 1; }
.biz-cta h2 {
    font-size: 32px; font-weight: 800; color: #fff;
    margin-bottom: 14px;
}
.biz-cta p {
    font-size: 17px; color: #94a3b8;
    max-width: 580px; margin: 0 auto 32px;
}
.biz-cta-btns {
    display: flex; gap: 16px; justify-content: center; flex-wrap: wrap;
}
.biz-cta-btns .biz-cta-primary {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 15px 36px;
    background: linear-gradient(135deg, #2563eb, #0891b2);
    color: #fff; font-size: 16px; font-weight: 700;
    border-radius: 12px; text-decoration: none;
    box-shadow: 0 6px 24px rgba(37,99,235,0.4);
    transition: all 0.3s;
}
.biz-cta-btns .biz-cta-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 36px rgba(37,99,235,0.55);
    color: #fff; text-decoration: none;
}
.biz-cta-btns .biz-cta-secondary {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 15px 36px;
    background: rgba(255,255,255,0.08);
    border: 1.5px solid rgba(255,255,255,0.2);
    color: #e2e8f0; font-size: 16px; font-weight: 600;
    border-radius: 12px; text-decoration: none;
    transition: all 0.3s;
}
.biz-cta-btns .biz-cta-secondary:hover {
    background: rgba(255,255,255,0.12);
    border-color: rgba(255,255,255,0.4);
    color: #fff; text-decoration: none;
}

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
    .biz-banner-inner { flex-direction: column; gap: 40px; text-align: center; }
    .biz-banner-text { flex: none; max-width: 540px; }
    .biz-banner-text h1 { font-size: 32px; }
    .biz-banner-text .biz-banner-btns { justify-content: center; }
    .biz-banner-visual .biz-service-rings { width: 260px; height: 260px; }
    .biz-core-grid { grid-template-columns: 1fr 1fr; }
    .biz-service-grid { grid-template-columns: 1fr 1fr 1fr; }
    .biz-stats-grid { grid-template-columns: repeat(2, 1fr); }
    .biz-why-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .biz-banner { padding: 100px 0 50px; }
    .biz-banner-text h1 { font-size: 26px; }
    .biz-core-grid { grid-template-columns: 1fr; }
    .biz-core-card { flex-direction: column; align-items: flex-start; }
    .biz-service-grid { grid-template-columns: 1fr 1fr; }
    .biz-stats-grid { grid-template-columns: repeat(2, 1fr); }
    .biz-stat-item .biz-stat-num { font-size: 30px; }
    .biz-why-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
    .biz-service-grid { grid-template-columns: 1fr; }
    .biz-stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
    .biz-why-grid { grid-template-columns: 1fr; }
    .biz-cta-btns { flex-direction: column; align-items: center; }
}