/* ==========================================================================
   Base Styles & Variables
   ========================================================================== */
:root {
    /* Corporate Colors */
    --primary: #1890ff;       /* Professional Blue */
    --primary-dark: #0050b3;  /* Deep Blue */
    --secondary: #f5222d;     /* Accent Red for stats or CTA */
    
    /* Text Colors */
    --text-main: #262626;     /* Dark Gray for primary text */
    --text-muted: #595959;    /* Medium Gray for descriptions */
    --text-light: #8c8c8c;    /* Light Gray for meta text */
    
    /* Backgrounds */
    --bg-main: #ffffff;
    --bg-gray: #f0f2f5;       /* Very light gray for alternating sections */
    --bg-dark: #001529;       /* Dark background for footer/network */
    
    /* UI Elements */
    --border-color: #d9d9d9;
    --border-radius: 4px;     /* Sharp/Subtle rounding for corporate feel */
    --box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --box-shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.12);
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    color: var(--text-main);
    background-color: var(--bg-main);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: var(--primary);
    transition: color 0.3s;
}

a:hover {
    color: var(--primary-dark);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

.bg-gray {
    background-color: var(--bg-gray);
}

.bg-dark {
    background-color: var(--bg-dark);
}

/* ==========================================================================
   Typography & Utilities
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-main);
}

.text-white {
    color: #fff !important;
}

.text-light {
    color: rgba(255, 255, 255, 0.65) !important;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-subtitle {
    display: block;
    font-size: 14px;
    color: var(--primary);
    font-weight: bold;
    letter-spacing: 1px;
    margin-bottom: 8px;
    text-transform: uppercase;
}

.section-title {
    font-size: 32px;
    margin-bottom: 16px;
}

.section-intro {
    font-size: 16px;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-block;
    padding: 10px 24px;
    font-size: 16px;
    font-weight: 500;
    text-align: center;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s;
    border: 1px solid transparent;
}

.btn-lg {
    padding: 12px 32px;
    font-size: 18px;
}

.btn-primary {
    background-color: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    color: #fff;
}

.btn-outline-light {
    background-color: transparent;
    color: #fff;
    border-color: #fff;
}

.btn-outline-light:hover {
    background-color: #fff;
    color: var(--primary-dark);
}

/* ==========================================================================
   Top Bar & Header
   ========================================================================== */
.top-bar {
    background-color: #fafafa;
    border-bottom: 1px solid var(--border-color);
    font-size: 13px;
    color: var(--text-muted);
    padding: 8px 0;
}

.top-bar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar-links a {
    color: var(--text-muted);
    margin: 0 8px;
}

.top-bar-links a:hover {
    color: var(--primary);
}

.header {
    background-color: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 13px;
    flex: 0 0 auto;
}

.logo-icon {
    width: 46px;
    height: 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 46px;
}

.logo-icon img {
    width: 46px;
    height: 46px;
    object-fit: contain;
}

.logo .logo-text strong {
    display: block;
    font-size: 25px;
    color: #14233f;
    line-height: 1;
    font-weight: 800;
    letter-spacing: 0.5px;
}

.logo-subtitle {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 3px;
    margin-top: 6px;
    font-size: 12px;
    line-height: 1.15;
    color: #5f6f86;
    font-weight: 500;
    letter-spacing: 0.1px;
    white-space: nowrap;
}

.nav-list {
    display: flex;
    gap: 30px;
}

.nav-list a {
    color: var(--text-main);
    font-weight: 500;
    font-size: 16px;
    padding: 10px 0;
    position: relative;
}

.nav-list a:hover, .nav-list a.active {
    color: var(--primary);
}

.nav-list a.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary);
}

/* ==========================================================================
   Hero Banner
   ========================================================================== */
.hero {
    background-color: var(--bg-dark);
    background-image: linear-gradient(135deg, #001529 0%, #003a8c 100%);
    padding: 100px 0 80px;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" opacity="0.05"><path d="M0 0h100v100H0z" fill="none"/><path stroke="%23fff" stroke-width="1" d="M0 0l100 100M100 0L0 100"/></svg>');
    opacity: 0.5;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-text-box {
    max-width: 700px;
}

.hero-tag {
    display: inline-block;
    padding: 4px 12px;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 20px;
    font-size: 13px;
    margin-bottom: 24px;
    letter-spacing: 1px;
}

.hero-title {
    font-size: 48px;
    color: #fff;
    margin-bottom: 24px;
    letter-spacing: -0.5px;
}

.hero-desc {
    font-size: 18px;
    color: rgba(255,255,255,0.8);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    gap: 60px;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 40px;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-num {
    font-size: 36px;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
}

.stat-text {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    margin-top: 8px;
}

/* ==========================================================================
   Core Service
   ========================================================================== */
.core-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.core-card {
    background: #fff;
    border: 1px solid var(--border-color);
    padding: 32px 24px;
    border-radius: var(--border-radius);
    transition: all 0.3s;
    border-top: 4px solid var(--primary);
}

.core-card:hover {
    box-shadow: var(--box-shadow-hover);
    transform: translateY(-5px);
}

.core-card-icon {
    width: 40px;
    height: 40px;
    background-color: var(--bg-gray);
    color: var(--primary);
    font-size: 20px;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    margin-bottom: 20px;
}

.core-card-title {
    font-size: 18px;
    margin-bottom: 12px;
}

.core-card-desc {
    color: var(--text-muted);
    font-size: 14px;
}

.core-cta {
    background-color: #e6f7ff;
    border: 1px solid #91d5ff;
    padding: 24px;
    border-radius: var(--border-radius);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.core-cta p {
    font-size: 18px;
    font-weight: 500;
    color: var(--primary-dark);
}

/* ==========================================================================
   Business Sectors
   ========================================================================== */
.sectors-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.sector-panel {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.sector-header {
    padding: 30px;
    background-color: #fafafa;
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.sector-icon {
    display: inline-block;
    background-color: var(--primary);
    color: #fff;
    font-weight: bold;
    font-size: 18px;
    padding: 8px 16px;
    border-radius: 4px;
    margin-bottom: 16px;
}

.sector-icon.alt {
    background-color: #52c41a;
}

.sector-title {
    font-size: 24px;
    margin-bottom: 12px;
}

.sector-desc {
    color: var(--text-muted);
    font-size: 15px;
}

.sector-list {
    padding: 30px;
}

.sector-list li {
    margin-bottom: 24px;
    position: relative;
    padding-left: 20px;
}

.sector-list li::before {
    content: "■";
    color: var(--primary);
    font-size: 10px;
    position: absolute;
    left: 0;
    top: 4px;
}

.sector-panel:nth-child(2) .sector-list li::before {
    color: #52c41a;
}

.sector-list li:last-child {
    margin-bottom: 0;
}

.sector-list strong {
    display: block;
    font-size: 16px;
    color: var(--text-main);
    margin-bottom: 4px;
}

.sector-list p {
    font-size: 14px;
    color: var(--text-muted);
}

/* ==========================================================================
   Standard Process
   ========================================================================== */
.process-steps {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-top: 40px;
}

.step-item {
    flex: 1;
    text-align: center;
    padding: 0 15px;
}

.step-num {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    background-color: #fff;
    border: 2px solid var(--primary);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: bold;
    box-shadow: 0 4px 10px rgba(24,144,255,0.2);
}

.step-item h4 {
    font-size: 18px;
    margin-bottom: 12px;
}

.step-item p {
    font-size: 14px;
    color: var(--text-muted);
}

.step-divider {
    width: 50px;
    height: 2px;
    background-color: var(--border-color);
    margin-top: 30px;
}

/* ==========================================================================
   Network & Map
   ========================================================================== */
.network-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 40px;
    align-items: center;
}

.network-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 30px 0;
}

.n-tag {
    background-color: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    padding: 6px 16px;
    border-radius: 4px;
    font-size: 14px;
    color: #fff;
}

.network-contact {
    background-color: rgba(255,255,255,0.05);
    padding: 24px;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary);
}

.network-contact h4 {
    color: #fff;
    margin-bottom: 8px;
}

.network-contact p {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 16px;
}

.phone-link {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary);
}

.phone-link:hover {
    color: #40a9ff;
}

.network-map {
    width: 100%;
    background: transparent;
    position: relative;
    padding: 0;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background-color: #000c17;
    color: rgba(255,255,255,0.65);
    padding: 60px 0 20px;
    font-size: 14px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-about p {
    line-height: 1.8;
    margin-bottom: 20px;
}

.footer-contact-info p {
    margin-bottom: 8px;
}

.footer-contact-info strong {
    color: rgba(255,255,255,0.85);
}

.footer-links h4 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 20px;
}

.footer-links ul li {
    margin-bottom: 12px;
}

.footer-links ul a {
    color: rgba(255,255,255,0.65);
}

.footer-links ul a:hover {
    color: var(--primary);
}

.qr-placeholder {
    width: 120px;
    height: 120px;
    background-color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--text-muted);
    font-size: 12px;
    padding: 10px;
    border-radius: 4px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
}

.legal a {
    color: rgba(255,255,255,0.65);
}

.legal a:hover {
    color: var(--primary);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 992px) {
    .core-grid { grid-template-columns: repeat(2, 1fr); }
    .sectors-grid { grid-template-columns: 1fr; }
    .network-layout { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .header-inner { flex-direction: column; height: auto; padding: 15px 0; gap: 15px; }
    .logo { justify-content: center; }
    .logo-subtitle { flex-wrap: wrap; justify-content: center; white-space: normal; line-height: 1.35; }
    .nav-list { flex-wrap: wrap; justify-content: center; gap: 15px; }
    .hero-title { font-size: 32px; }
    .hero-stats { flex-direction: column; gap: 20px; }
    .core-grid { grid-template-columns: 1fr; }
    .process-steps { flex-direction: column; align-items: center; gap: 30px; }
    .step-divider { width: 2px; height: 30px; margin: 0; }
    .core-cta { flex-direction: column; text-align: center; gap: 20px; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: 15px; text-align: center; }
}