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

:root {
    --primary-dark: #0B1A2E;
    --primary-blue: #2563EB;
    --primary-blue-hover: #1d4ed8;
    --text-dark: #1a1a2e;
    --text-gray: #64748b;
    --text-light: #94a3b8;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;
}

body {
    font-family: 'Noto Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background: var(--bg-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
header {
    padding: 16px 0;
    background: var(--bg-white);
    position: sticky;
    top: 0;
    z-index: 100;
}

header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
    font-size: 20px;
    color: var(--text-dark);
    text-decoration: none;
}

.logo-icon {
    height: 30px;
    color: var(--primary-blue);
}

nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

nav a {
    color: var(--text-dark);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--primary-blue);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-blue-hover);
}

.btn-dark {
    background: var(--primary-dark);
    color: white;
}

.btn-dark:hover {
    background: #162942;
}

/* Hero Section */
.hero {
    padding: 48px 0 80px;
    text-align: center;
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.hero-subtitle {
    font-size: 16px;
    color: var(--text-gray);
    max-width: 520px;
    margin: 0 auto 40px;
}

.hero-image-container {
    position: relative;
    margin: 0 auto;
}

.hero-image {
    width: 100%;
    height: 480px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 24px;
    overflow: hidden;
    position: relative;
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.search-box {
    position: absolute;
    bottom: 60px;
    left: 50%;
    transform: translateX(-50%);
    background: white;
    border-radius: 50px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
    padding: 0px 8px 0px 24px;
    display: flex;
    align-items: center;
    gap: 8px;
    width: 90%;
    max-width: 580px;
}

.search-box-inner {
    flex: 1;
    padding: 8px 16px;
}

.search-box label {
    display: block;
    font-size: 11px;
    color: var(--text-light);
    margin-bottom: 2px;
}

.search-box input {
    width: 100%;
    border: none;
    outline: none;
    font-size: 14px;
    color: var(--text-dark);
    font-family: inherit;
}

.search-box input::placeholder {
    color: var(--text-light);
}

.search-box .btn {
    white-space: nowrap;
    padding: 14px 24px;
}

/* Hero Tagline */
.hero-tagline {
    margin-top: 24px;
    font-size: 13px;
    color: var(--text-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.hero-tagline .plus-icon {
    color: var(--primary-blue);
    font-weight: 600;
}

/* Why Choose Section */
.why-choose {
    padding: 80px 0;
    background: var(--bg-white);
}

.why-choose .container {
    text-align: center;
}

.why-choose h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
}

.why-choose > .container > p {
    color: var(--text-gray);
    max-width: 580px;
    margin: 0 auto 60px;
    font-size: 15px;
}

.why-choose-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    text-align: left;
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.feature-item {
    display: flex;
    gap: 16px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-light);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    color: var(--text-gray);
}

.feature-content h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 6px;
}

.feature-content p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.6;
}

.uptime-card {
    background: var(--bg-light);
    border-radius: 16px;
    padding: 32px;
}

.uptime-label {
    font-size: 13px;
    color: var(--text-gray);
    margin-bottom: 8px;
}

.uptime-value {
    font-size: 48px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 24px;
}

.uptime-chart {
    display: flex;
    align-items: flex-end;
    gap: 3px;
    height: 80px;
}

.uptime-bar {
    flex: 1;
    background: var(--primary-blue);
    border-radius: 2px;
    min-height: 20px;
}

.uptime-bar.low {
    background: #dbeafe;
}

.uptime-footer {
    display: flex;
    justify-content: space-between;
    margin-top: 12px;
    font-size: 12px;
    color: var(--text-light);
}

/* About Section */
.about {
    padding: 80px 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: 16px;
}

.play-button {
    position: absolute;
    bottom: -20px;
    right: 40px;
    width: 80px;
    height: 80px;
    background: var(--primary-blue);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.2s, background 0.2s;
}

.play-button:hover {
    transform: scale(1.05);
    background: var(--primary-blue-hover);
}

.play-button svg {
    width: 32px;
    height: 32px;
    color: white;
    margin-left: 4px;
}

.about-content h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
}

.about-content > p {
    color: var(--text-gray);
    margin-bottom: 20px;
    font-size: 15px;
}

.about-content ul {
    list-style: none;
    margin-bottom: 24px;
}

.about-content li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 10px;
    font-size: 15px;
    color: var(--text-gray);
}

.about-content li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--text-dark);
}

/* Network Quality Section */
.network {
    padding: 80px 0;
}

.network-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.network-content h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
}

.network-content p {
    color: var(--text-gray);
    margin-bottom: 16px;
    font-size: 15px;
    line-height: 1.7;
}

.network-content .btn {
    margin-top: 8px;
}

.network-map {
    position: relative;
    height: 350px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Footer */
footer {
    background: var(--primary-dark);
    color: white;
    padding: 60px 0 0;
}

.footer-main {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    padding-bottom: 48px;
}

.footer-brand .logo {
    color: white;
    margin-bottom: 16px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    margin-bottom: 24px;
    max-width: 320px;
}

.footer-contact {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.8;
}

.footer-links h4 {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 16px;
    font-weight: 500;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 24px 0;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

.footer-bottom-links {
    display: flex;
    gap: 24px;
}

.footer-bottom-links a {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-bottom-links a:hover {
    color: white;
}

.footer-legal {
    padding: 24px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-legal p {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.4);
    line-height: 1.7;
    margin-bottom: 12px;
}

/* Responsive */
@media (max-width: 968px) {
    .why-choose-grid,
    .about-grid,
    .network-grid,
    .footer-main {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero h1 {
        font-size: 36px;
    }

    nav {
        display: none;
    }

    .about-grid {
        direction: ltr;
    }

    .network-map {
        order: -1;
    }
}

@media (max-width: 640px) {
    .hero h1 {
        font-size: 28px;
    }

    .why-choose h2,
    .about-content h2,
    .network-content h2 {
        font-size: 28px;
    }

    .search-box {
        flex-direction: column;
        width: 95%;
        border-radius: 24px;
        padding: 16px;
    }

    .search-box .btn {
        width: 100%;
    }

    .footer-bottom-content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}