/* ============================================================
   南宫体育 - 射箭与射击运动专业资讯平台
   CSS前缀: na-
   设计风格: 靶心精准射击风 (Bullseye Precision Targeting)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

/* --- Font Declarations --- */
@font-face {
    font-family: 'Russo One';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('../fonts/russo-one.woff2') format('woff2');
}

/* --- CSS Variables --- */
:root {
    --na-primary: #1A1A1A;
    --na-secondary: #4A4A4A;
    --na-accent: #FFD700;
    --na-highlight: #D9534F;
    --na-bg: #0F0F0F;
    --na-text: #F5F5F5;
    --na-text-muted: #A9A9A9;
    --na-radius: 4px;
    --na-shadow: 0 2px 15px rgba(255,215,0,0.2);
    --na-font-title: 'Russo One', sans-serif;
    --na-font-body: 'Noto Sans SC', sans-serif;
}

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html {
    font-size: 16px;
    scroll-behavior: smooth;
}
body {
    font-family: var(--na-font-body);
    background-color: var(--na-bg);
    color: var(--na-text);
    line-height: 1.8;
    overflow-x: hidden;
}
a {
    color: var(--na-accent);
    text-decoration: none;
    transition: color 0.3s ease;
}
a:hover {
    color: #fff;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
h1, h2, h3, h4, h5, h6 {
    font-family: var(--na-font-title);
    color: var(--na-text);
    line-height: 1.3;
}

/* --- Navigation --- */
.na-header {
    width: 100%;
    background-image: url('../images/carbon-fiber.png');
    background-color: rgba(26, 26, 26, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--na-accent);
    z-index: 1000;
    position: relative;
}
.na-nav-container {
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    height: 72px;
}
.na-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--na-font-title);
    font-size: 1.5rem;
    color: var(--na-accent);
    text-decoration: none;
}
.na-logo img {
    width: 42px;
    height: 42px;
    border-radius: 50%;
}
.na-nav-links {
    display: flex;
    align-items: center;
    gap: 0;
    list-style: none;
}
.na-nav-links li a {
    display: inline-block;
    padding: 24px 16px;
    color: var(--na-text);
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    transition: color 0.3s ease;
}
.na-nav-links li a::after {
    content: '';
    position: absolute;
    bottom: 18px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--na-accent);
    transition: width 0.3s ease;
}
.na-nav-links li a:hover {
    color: var(--na-accent);
}
.na-nav-links li a:hover::after {
    width: 60%;
}
.na-nav-links li a.na-active {
    color: var(--na-accent);
}
.na-cta-btn {
    display: inline-block;
    padding: 10px 22px;
    background: transparent;
    color: var(--na-accent);
    border: 2px solid var(--na-accent);
    border-radius: var(--na-radius);
    font-family: var(--na-font-body);
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}
.na-cta-btn:hover {
    background: var(--na-accent);
    color: #000;
}
/* Hamburger Menu */
.na-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1100;
}
.na-hamburger span {
    width: 28px;
    height: 3px;
    background: var(--na-accent);
    border-radius: 2px;
    transition: all 0.3s ease;
}
.na-mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100vh;
    background-image: url('../images/carbon-fiber.png');
    background-color: rgba(15, 15, 15, 0.95);
    backdrop-filter: blur(12px);
    z-index: 1050;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 24px;
    transition: left 0.4s ease;
}
.na-mobile-menu.na-open {
    left: 0;
}
.na-mobile-menu a {
    font-size: 1.4rem;
    color: var(--na-text);
    font-weight: 500;
    padding: 12px 0;
}
.na-mobile-menu a:hover {
    color: var(--na-accent);
}

/* --- Hero Banner --- */
.na-hero {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}
.na-hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}
.na-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.8) 100%);
    z-index: 2;
}
.na-hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    max-width: 900px;
    padding: 0 24px;
}
.na-hero-content h1 {
    font-size: 3.2rem;
    margin-bottom: 20px;
    text-shadow: 0 2px 20px rgba(0,0,0,0.8);
}
.na-hero-content h1 .na-gold {
    color: var(--na-accent);
}
.na-hero-subtitle {
    font-size: 1.15rem;
    color: var(--na-text-muted);
    margin-bottom: 36px;
    line-height: 1.8;
}
.na-hero-cta {
    display: inline-block;
    padding: 16px 48px;
    background: var(--na-accent);
    color: #000;
    font-weight: 700;
    font-size: 1.1rem;
    border-radius: var(--na-radius);
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--na-shadow);
    text-decoration: none;
}
.na-hero-cta:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 25px rgba(255,215,0,0.4);
    color: #000;
}
/* Crosshair SVG Animation */
.na-crosshair {
    position: absolute;
    z-index: 2;
    width: 200px;
    height: 200px;
    opacity: 0.15;
    animation: na-rotate 20s linear infinite;
}
@keyframes na-rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* --- Section Common --- */
.na-section {
    padding: 80px 24px;
    max-width: 1440px;
    margin: 0 auto;
}
.na-section-title {
    font-size: 2.2rem;
    text-align: center;
    margin-bottom: 12px;
    color: var(--na-text);
}
.na-section-title .na-gold {
    color: var(--na-accent);
}
.na-section-subtitle {
    text-align: center;
    color: var(--na-text-muted);
    font-size: 1rem;
    margin-bottom: 48px;
}
.na-divider {
    width: 80px;
    height: 3px;
    background: var(--na-accent);
    margin: 16px auto 48px;
}

/* --- Card Grid --- */
.na-card-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.na-card {
    background: var(--na-primary);
    border: 1px solid #2a2a2a;
    border-radius: var(--na-radius);
    overflow: hidden;
    transition: all 0.3s ease;
}
.na-card:hover {
    border-color: var(--na-accent);
    box-shadow: var(--na-shadow);
    transform: translateY(-4px);
}
.na-card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}
.na-card-body {
    padding: 20px;
}
.na-card-body h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    font-family: var(--na-font-body);
    font-weight: 700;
}
.na-card-body p {
    font-size: 0.9rem;
    color: var(--na-text-muted);
    line-height: 1.6;
}
.na-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    border-top: 1px solid #2a2a2a;
    font-size: 0.8rem;
    color: var(--na-text-muted);
}

/* --- Event Cards --- */
.na-event-card {
    background: var(--na-primary);
    border: 1px solid #2a2a2a;
    border-radius: var(--na-radius);
    padding: 24px;
    text-align: center;
    transition: all 0.3s ease;
}
.na-event-card:hover {
    border-color: var(--na-accent);
    box-shadow: var(--na-shadow);
}
.na-event-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 16px;
    border-radius: 50%;
    background: rgba(255,215,0,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}
.na-event-name {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 8px;
}
.na-event-info {
    font-size: 0.85rem;
    color: var(--na-text-muted);
    margin-bottom: 16px;
}
.na-countdown {
    display: flex;
    justify-content: center;
    gap: 12px;
}
.na-countdown-item {
    text-align: center;
}
.na-countdown-num {
    display: block;
    font-family: var(--na-font-title);
    font-size: 1.6rem;
    color: var(--na-accent);
}
.na-countdown-label {
    font-size: 0.7rem;
    color: var(--na-text-muted);
    text-transform: uppercase;
}

/* --- Video Cards --- */
.na-video-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.na-video-card {
    background: var(--na-primary);
    border: 1px solid #2a2a2a;
    border-radius: var(--na-radius);
    overflow: hidden;
    transition: all 0.3s ease;
}
.na-video-card:hover {
    border-color: var(--na-accent);
    box-shadow: var(--na-shadow);
}
.na-video-card video {
    width: 100%;
    height: 220px;
    object-fit: cover;
    background: #000;
}
.na-video-card .na-card-body h3 {
    font-size: 1rem;
}

/* --- Athlete Cards --- */
.na-athlete-scroll {
    display: flex;
    gap: 24px;
    overflow-x: auto;
    padding-bottom: 16px;
    scroll-snap-type: x mandatory;
}
.na-athlete-scroll::-webkit-scrollbar {
    height: 6px;
}
.na-athlete-scroll::-webkit-scrollbar-track {
    background: #1a1a1a;
}
.na-athlete-scroll::-webkit-scrollbar-thumb {
    background: var(--na-accent);
    border-radius: 3px;
}
.na-athlete-card {
    min-width: 280px;
    flex-shrink: 0;
    scroll-snap-align: start;
    background: var(--na-primary);
    border: 1px solid #2a2a2a;
    border-radius: var(--na-radius);
    overflow: hidden;
    transition: all 0.3s ease;
}
.na-athlete-card:hover {
    border-color: var(--na-accent);
    box-shadow: var(--na-shadow);
}
.na-athlete-img {
    width: 100%;
    height: 320px;
    object-fit: cover;
    filter: grayscale(60%);
    transition: filter 0.3s ease;
}
.na-athlete-card:hover .na-athlete-img {
    filter: grayscale(0%);
}
.na-athlete-info {
    padding: 20px;
}
.na-athlete-name {
    font-family: var(--na-font-title);
    font-size: 1.2rem;
    color: var(--na-accent);
    margin-bottom: 4px;
}
.na-athlete-achievement {
    font-size: 0.85rem;
    color: var(--na-text-muted);
    margin-bottom: 12px;
}
.na-athlete-quote {
    font-style: italic;
    font-size: 0.9rem;
    color: var(--na-text);
    border-left: 3px solid var(--na-accent);
    padding-left: 12px;
}

/* --- Equipment Cards --- */
.na-equip-card {
    background: var(--na-primary);
    border: 1px solid #2a2a2a;
    border-radius: var(--na-radius);
    overflow: hidden;
    transition: all 0.3s ease;
}
.na-equip-card:hover {
    border-color: var(--na-accent);
    box-shadow: var(--na-shadow);
    transform: translateY(-4px);
}
.na-equip-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}
.na-equip-body {
    padding: 20px;
}
.na-equip-name {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 8px;
}
.na-equip-specs {
    font-size: 0.85rem;
    color: var(--na-text-muted);
    margin-bottom: 12px;
}
.na-equip-rating {
    color: var(--na-accent);
    font-size: 0.9rem;
    margin-bottom: 8px;
}
.na-equip-price {
    font-family: var(--na-font-title);
    font-size: 1.1rem;
    color: var(--na-highlight);
}

/* --- Recruit / Register Section --- */
.na-recruit {
    background: linear-gradient(135deg, #1a1a1a 0%, #0f0f0f 100%);
    border: 1px solid #2a2a2a;
    border-radius: var(--na-radius);
    padding: 60px 40px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.na-recruit::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,215,0,0.03) 0%, transparent 70%);
    animation: na-pulse 4s ease-in-out infinite;
}
@keyframes na-pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 1; }
}
.na-recruit h2 {
    position: relative;
    z-index: 1;
}
.na-recruit-form {
    position: relative;
    z-index: 1;
    max-width: 500px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.na-input {
    padding: 14px 18px;
    background: rgba(255,255,255,0.05);
    border: 1px solid #3a3a3a;
    border-radius: var(--na-radius);
    color: var(--na-text);
    font-family: var(--na-font-body);
    font-size: 0.95rem;
    transition: border-color 0.3s ease;
}
.na-input:focus {
    outline: none;
    border-color: var(--na-accent);
}
.na-input::placeholder {
    color: var(--na-text-muted);
}
.na-submit-btn {
    padding: 14px;
    background: var(--na-accent);
    color: #000;
    border: none;
    border-radius: var(--na-radius);
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--na-font-body);
}
.na-submit-btn:hover {
    box-shadow: var(--na-shadow);
    transform: translateY(-2px);
}

/* --- Ballistic Simulator --- */
.na-simulator {
    background: var(--na-primary);
    border: 1px solid #2a2a2a;
    border-radius: var(--na-radius);
    padding: 40px;
}
.na-sim-controls {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}
.na-sim-select {
    padding: 10px 16px;
    background: rgba(255,255,255,0.05);
    border: 1px solid #3a3a3a;
    border-radius: var(--na-radius);
    color: var(--na-text);
    font-family: var(--na-font-body);
    font-size: 0.9rem;
}
.na-sim-select:focus {
    outline: none;
    border-color: var(--na-accent);
}
.na-sim-canvas {
    width: 100%;
    height: 400px;
    background: #0a0a0a;
    border: 1px solid #2a2a2a;
    border-radius: var(--na-radius);
    position: relative;
    overflow: hidden;
}
.na-sim-result {
    margin-top: 20px;
    padding: 20px;
    background: rgba(255,215,0,0.05);
    border: 1px solid rgba(255,215,0,0.2);
    border-radius: var(--na-radius);
    display: none;
}

/* --- News Cards --- */
.na-news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* --- Honor Wall --- */
.na-honor-wall {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}
.na-honor-badge {
    text-align: center;
    max-width: 300px;
}
.na-honor-badge img {
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 50%;
    border: 3px solid var(--na-accent);
    margin: 0 auto 16px;
    box-shadow: var(--na-shadow);
}
.na-honor-badge h4 {
    font-family: var(--na-font-body);
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: 8px;
    color: var(--na-accent);
}
.na-honor-badge p {
    font-size: 0.85rem;
    color: var(--na-text-muted);
}

/* --- Community Section --- */
.na-community-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 800px;
    margin: 0 auto;
}
.na-comment {
    background: var(--na-primary);
    border: 1px solid #2a2a2a;
    border-radius: var(--na-radius);
    padding: 20px;
}
.na-comment-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}
.na-comment-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--na-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--na-accent);
    font-weight: 700;
    font-size: 1rem;
}
.na-comment-user {
    font-weight: 700;
    font-size: 0.95rem;
}
.na-comment-time {
    font-size: 0.8rem;
    color: var(--na-text-muted);
}
.na-comment-text {
    font-size: 0.9rem;
    color: var(--na-text);
    line-height: 1.7;
}

/* --- Footer --- */
.na-footer {
    background: var(--na-primary);
    border-top: 1px solid #2a2a2a;
    padding: 60px 24px 0;
}
.na-footer-grid {
    max-width: 1440px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    padding-bottom: 40px;
}
.na-footer-col h4 {
    font-family: var(--na-font-body);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--na-text);
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}
.na-footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--na-accent);
}
.na-footer-col p {
    font-size: 0.9rem;
    color: var(--na-text-muted);
    line-height: 1.7;
}
.na-footer-links {
    list-style: none;
}
.na-footer-links li {
    margin-bottom: 10px;
}
.na-footer-links li a {
    color: var(--na-text-muted);
    font-size: 0.9rem;
    transition: color 0.3s ease;
}
.na-footer-links li a:hover {
    color: var(--na-accent);
}
.na-social-links {
    display: flex;
    gap: 16px;
    margin-top: 12px;
}
.na-social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.05);
    border: 1px solid #3a3a3a;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--na-text-muted);
    font-size: 0.9rem;
    transition: all 0.3s ease;
}
.na-social-links a:hover {
    border-color: var(--na-accent);
    color: var(--na-accent);
    background: rgba(255,215,0,0.1);
}
.na-footer-bottom {
    border-top: 1px solid #2a2a2a;
    padding: 20px 24px;
    text-align: center;
    max-width: 1440px;
    margin: 0 auto;
}
.na-footer-bottom p {
    font-size: 0.8rem;
    color: var(--na-text-muted);
    margin-bottom: 4px;
}
.na-footer-badges {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-top: 12px;
    flex-wrap: wrap;
}
.na-footer-badges span {
    font-size: 0.75rem;
    color: var(--na-accent);
    border: 1px solid rgba(255,215,0,0.3);
    padding: 4px 12px;
    border-radius: var(--na-radius);
}

/* --- Inner Page Banner --- */
.na-page-banner {
    width: 100%;
    height: 400px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}
.na-page-banner img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}
.na-page-banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0.8) 100%);
    z-index: 2;
}
.na-page-banner-content {
    position: relative;
    z-index: 3;
    text-align: center;
}
.na-page-banner-content h1 {
    font-size: 2.8rem;
    margin-bottom: 12px;
}
.na-page-banner-content p {
    font-size: 1.1rem;
    color: var(--na-text-muted);
}

/* --- Breadcrumb --- */
.na-breadcrumb {
    padding: 16px 24px;
    max-width: 1440px;
    margin: 0 auto;
    font-size: 0.85rem;
    color: var(--na-text-muted);
}
.na-breadcrumb a {
    color: var(--na-text-muted);
}
.na-breadcrumb a:hover {
    color: var(--na-accent);
}
.na-breadcrumb span {
    margin: 0 8px;
    color: #3a3a3a;
}

/* --- Content Area --- */
.na-content {
    max-width: 1440px;
    margin: 0 auto;
    padding: 40px 24px 80px;
}
.na-content-main {
    max-width: 900px;
}
.na-content h2 {
    font-size: 1.8rem;
    margin: 40px 0 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid rgba(255,215,0,0.2);
}
.na-content h3 {
    font-size: 1.3rem;
    margin: 28px 0 12px;
    color: var(--na-accent);
}
.na-content p {
    margin-bottom: 16px;
    font-size: 1rem;
    line-height: 1.9;
    color: var(--na-text);
}
.na-content-img {
    width: 100%;
    border-radius: var(--na-radius);
    margin: 24px 0;
    border: 1px solid #2a2a2a;
}

/* --- Training Range Page --- */
.na-training-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 24px;
    margin-top: 24px;
}
.na-control-panel {
    background: var(--na-primary);
    border: 1px solid #2a2a2a;
    border-radius: var(--na-radius);
    padding: 24px;
}
.na-control-panel h3 {
    font-family: var(--na-font-body);
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--na-accent);
}
.na-control-group {
    margin-bottom: 20px;
}
.na-control-group label {
    display: block;
    font-size: 0.85rem;
    color: var(--na-text-muted);
    margin-bottom: 6px;
}
.na-control-group select,
.na-control-group input[type="range"] {
    width: 100%;
    padding: 8px 12px;
    background: rgba(255,255,255,0.05);
    border: 1px solid #3a3a3a;
    border-radius: var(--na-radius);
    color: var(--na-text);
    font-family: var(--na-font-body);
}
.na-range-value {
    font-size: 0.8rem;
    color: var(--na-accent);
    margin-top: 4px;
}
.na-start-btn {
    width: 100%;
    padding: 14px;
    background: var(--na-accent);
    color: #000;
    border: none;
    border-radius: var(--na-radius);
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--na-font-body);
}
.na-start-btn:hover {
    box-shadow: var(--na-shadow);
}
.na-sim-viewport {
    background: #0a0a0a;
    border: 1px solid #2a2a2a;
    border-radius: var(--na-radius);
    position: relative;
    min-height: 500px;
    cursor: crosshair;
    overflow: hidden;
}
.na-target-canvas {
    width: 100%;
    height: 100%;
    min-height: 500px;
}
.na-report-card {
    background: var(--na-primary);
    border: 1px solid rgba(255,215,0,0.2);
    border-radius: var(--na-radius);
    padding: 24px;
    margin-top: 24px;
    display: none;
}
.na-report-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 16px;
}
.na-report-item {
    text-align: center;
    padding: 16px;
    background: rgba(255,255,255,0.03);
    border-radius: var(--na-radius);
}
.na-report-item .na-val {
    font-family: var(--na-font-title);
    font-size: 1.5rem;
    color: var(--na-accent);
}
.na-report-item .na-label {
    font-size: 0.8rem;
    color: var(--na-text-muted);
    margin-top: 4px;
}

/* --- APP Download Page --- */
.na-app-hero {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 60px;
    padding: 80px 24px;
    max-width: 1200px;
    margin: 0 auto;
}
.na-app-mockup {
    max-width: 300px;
    border-radius: 24px;
    box-shadow: 0 0 40px rgba(255,215,0,0.15);
}
.na-app-info h2 {
    font-size: 1.8rem;
    margin-bottom: 16px;
}
.na-app-features {
    list-style: none;
    margin: 24px 0;
}
.na-app-features li {
    padding: 12px 0;
    border-bottom: 1px solid #2a2a2a;
    font-size: 0.95rem;
    color: var(--na-text);
    display: flex;
    align-items: flex-start;
    gap: 12px;
}
.na-app-features li .na-feat-icon {
    color: var(--na-accent);
    font-size: 1.2rem;
    flex-shrink: 0;
}
.na-app-btns {
    display: flex;
    gap: 16px;
    margin-top: 24px;
}
.na-app-btn {
    display: inline-block;
    padding: 14px 28px;
    background: var(--na-accent);
    color: #000;
    font-weight: 700;
    border-radius: var(--na-radius);
    transition: all 0.3s ease;
    text-decoration: none;
}
.na-app-btn:hover {
    box-shadow: var(--na-shadow);
    transform: translateY(-2px);
    color: #000;
}
.na-app-btn.na-outline {
    background: transparent;
    border: 2px solid var(--na-accent);
    color: var(--na-accent);
}
.na-app-btn.na-outline:hover {
    background: var(--na-accent);
    color: #000;
}

/* --- FAQ Section --- */
.na-faq-list {
    max-width: 800px;
    margin: 0 auto;
}
.na-faq-item {
    border: 1px solid #2a2a2a;
    border-radius: var(--na-radius);
    margin-bottom: 12px;
    overflow: hidden;
}
.na-faq-question {
    padding: 18px 24px;
    background: var(--na-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 700;
    font-size: 0.95rem;
    transition: background 0.3s ease;
}
.na-faq-question:hover {
    background: rgba(255,215,0,0.05);
}
.na-faq-question .na-faq-toggle {
    color: var(--na-accent);
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}
.na-faq-answer {
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    color: var(--na-text-muted);
    line-height: 1.7;
}
.na-faq-item.na-open .na-faq-answer {
    padding: 18px 24px;
    max-height: 500px;
}
.na-faq-item.na-open .na-faq-toggle {
    transform: rotate(45deg);
}

/* --- Responsive Design --- */
/* Tablet: 768px - 1024px */
@media (max-width: 1024px) {
    .na-card-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .na-video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .na-news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .na-footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .na-training-layout {
        grid-template-columns: 1fr;
    }
    .na-app-hero {
        flex-direction: column;
        text-align: center;
    }
    .na-report-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .na-hero-content h1 {
        font-size: 2.4rem;
    }
}

/* Mobile: < 768px */
@media (max-width: 768px) {
    .na-nav-links {
        display: none;
    }
    .na-hamburger {
        display: flex;
    }
    .na-mobile-menu {
        display: flex;
    }
    .na-hero-content h1 {
        font-size: 1.8rem;
    }
    .na-hero-subtitle {
        font-size: 0.95rem;
    }
    .na-section {
        padding: 48px 16px;
    }
    .na-section-title {
        font-size: 1.6rem;
    }
    .na-card-grid {
        grid-template-columns: 1fr;
    }
    .na-video-grid {
        grid-template-columns: 1fr;
    }
    .na-news-grid {
        grid-template-columns: 1fr;
    }
    .na-footer-grid {
        grid-template-columns: 1fr;
    }
    .na-page-banner {
        height: 280px;
    }
    .na-page-banner-content h1 {
        font-size: 1.8rem;
    }
    .na-honor-wall {
        flex-direction: column;
        align-items: center;
    }
    .na-app-btns {
        flex-direction: column;
    }
    .na-report-grid {
        grid-template-columns: 1fr 1fr;
    }
    .na-sim-controls {
        flex-direction: column;
    }
}

/* Small Mobile: < 480px */
@media (max-width: 480px) {
    .na-hero-content h1 {
        font-size: 1.4rem;
    }
    .na-countdown {
        gap: 8px;
    }
    .na-countdown-num {
        font-size: 1.2rem;
    }
}

/* Large Desktop: > 1440px */
@media (min-width: 1441px) {
    .na-section {
        max-width: 1600px;
    }
}