/* ============================================
   前线模拟战 - H5 游戏官网
   Frontline Simulation Official Website
   ============================================ */

/* === CSS 变量 === */
:root {
    --color-bg: #0a0e0a;
    --color-bg-alt: #0f140f;
    --color-bg-card: #151e15;
    --color-bg-elevated: #1a261a;
    --color-primary: #4a7c3f;
    --color-primary-dark: #3a6630;
    --color-primary-light: #5e9e50;
    --color-accent: #e8892f;
    --color-accent-dark: #c97320;
    --color-accent-light: #f0a050;
    --color-text: #e8e8e0;
    --color-text-dim: #9a9a90;
    --color-text-dark: #606058;
    --color-border: #2a3a2a;
    --color-border-light: #3a4f3a;
    --color-danger: #c0392b;
    --font-cn: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-en: 'Oswald', 'Impact', sans-serif;
    --nav-height: 72px;
    --max-width: 1200px;
    --transition-speed: 0.3s;
}

/* === Reset & Base === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font-cn);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

ul { list-style: none; }

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

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
    position: relative;
}

/* === Section Header === */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-en);
    font-size: 14px;
    letter-spacing: 4px;
    color: var(--color-primary-light);
    margin-bottom: 12px;
    text-transform: uppercase;
}

.section-title {
    font-size: 40px;
    font-weight: 900;
    color: #fff;
    letter-spacing: 2px;
    margin-bottom: 16px;
}

.section-divider {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    margin: 0 auto;
    border-radius: 2px;
}

/* ============================================
   导航栏
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(10, 14, 10, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(74, 124, 63, 0.15);
    z-index: 1000;
    transition: all var(--transition-speed);
}

.navbar.scrolled {
    background: rgba(10, 14, 10, 0.95);
    border-bottom-color: rgba(74, 124, 63, 0.3);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    transition: opacity var(--transition-speed);
}

.nav-logo:hover { opacity: 0.9; }

.logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.logo-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.logo-text {
    background: linear-gradient(90deg, #fff, #ccc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: block;
    padding: 8px 16px;
    font-size: 14px;
    color: var(--color-text-dim);
    transition: all var(--transition-speed);
    border-radius: 6px;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #fff;
    background: rgba(74, 124, 63, 0.15);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--color-primary);
    border-radius: 1px;
}

.nav-download-link {
    color: var(--color-accent) !important;
    font-weight: 600;
}

.nav-download-link:hover {
    background: rgba(232, 137, 47, 0.15) !important;
}

.nav-cta-btn {
    display: none;
    padding: 10px 24px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: #fff;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    transition: all var(--transition-speed);
    white-space: nowrap;
}

.nav-cta-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(232, 137, 47, 0.3);
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
    padding: 4px;
}

.bar {
    width: 24px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: all var(--transition-speed);
}

.hamburger.active .bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger.active .bar:nth-child(2) {
    opacity: 0;
}

.hamburger.active .bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ============================================
   英雄区域
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: var(--nav-height);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-image: url('../assets/images/Snipaste_2026-06-11_16-09-14.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 1;
    animation: heroBgZoom 20s ease-in-out infinite alternate;
}

@keyframes heroBgZoom {
    0% { transform: scale(1); }
    100% { transform: scale(1.08); }
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(74, 124, 63, 0.25) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(232, 137, 47, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(0, 0, 0, 0.3) 0%, transparent 50%);
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(10, 14, 10, 0.75) 0%, rgba(10, 14, 10, 0.5) 25%, rgba(10, 14, 10, 0.45) 50%, rgba(10, 14, 10, 0.65) 75%, rgba(10, 14, 10, 0.9) 100%);
    z-index: 2;
}

#particleCanvas {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    padding: 0 24px;
    max-width: 900px;
    animation: heroFadeIn 1.5s ease-out;
}

@keyframes heroFadeIn {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    background: rgba(0, 0, 0, 0.55);
    border: 1px solid rgba(74, 124, 63, 0.4);
    border-radius: 50px;
    font-size: 14px;
    color: #c8e0c0;
    margin-bottom: 30px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.hero-badge i {
    color: #f1c40f;
}

.hero-title {
    margin-bottom: 20px;
}

.hero-title-line {
    display: block;
    font-size: clamp(48px, 10vw, 96px);
    font-weight: 900;
    background: linear-gradient(135deg, #fff 0%, #f0e8d0 50%, #f0a050 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
    letter-spacing: 4px;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.hero-title-sub {
    display: block;
    font-family: var(--font-en);
    font-size: clamp(16px, 3vw, 28px);
    font-weight: 400;
    color: #b0b0a8;
    letter-spacing: 12px;
    margin-top: 8px;
    text-transform: uppercase;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.6);
}

.hero-desc {
    font-size: clamp(16px, 2vw, 20px);
    color: #d0d0c8;
    margin-bottom: 40px;
    letter-spacing: 2px;
    text-shadow: 0 2px 16px rgba(0, 0, 0, 0.5);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.hero-stat-item {
    text-align: center;
    padding: 12px 20px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    min-width: 100px;
}

.hero-stat-num {
    display: block;
    font-family: var(--font-en);
    font-size: 32px;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
}

.hero-stat-label {
    font-size: 12px;
    color: #a0a098;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 36px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    transition: all var(--transition-speed);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: #fff;
    box-shadow: 0 4px 20px rgba(232, 137, 47, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(232, 137, 47, 0.4);
}

.btn-secondary {
    background: rgba(0, 0, 0, 0.45);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.35);
    transform: translateY(-2px);
}

.btn-qq {
    background: rgba(232, 137, 47, 0.2);
    color: #e8892f;
    border: 1px solid rgba(232, 137, 47, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.btn-qq:hover {
    background: rgba(232, 137, 47, 0.35);
    border-color: #e8892f;
    color: #e8892f;
    transform: translateY(-2px);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    color: var(--color-text-dark);
    font-size: 12px;
    letter-spacing: 2px;
    animation: scrollBounce 2s ease-in-out infinite;
}

.scroll-indicator i {
    font-size: 16px;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* ============================================
   游戏简介
   ============================================ */
.about {
    background: var(--color-bg-alt);
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

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

.about-description {
    font-size: 16px;
    color: var(--color-text-dim);
    line-height: 1.8;
    margin-bottom: 20px;
}

.about-description strong {
    color: var(--color-text);
}

.about-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 24px 0;
}

.about-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: rgba(74, 124, 63, 0.15);
    border: 1px solid rgba(74, 124, 63, 0.2);
    border-radius: 20px;
    font-size: 13px;
    color: var(--color-primary-light);
}

.about-tag i {
    font-size: 11px;
}

.about-dev {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-text-dim);
    font-size: 14px;
    margin-top: 16px;
}

.about-dev i {
    color: var(--color-accent);
}

.about-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.about-stat-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 24px 16px;
    text-align: center;
    transition: all var(--transition-speed);
}

.about-stat-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(74, 124, 63, 0.15);
}

.about-stat-icon {
    font-size: 24px;
    color: var(--color-primary-light);
    margin-bottom: 12px;
}

.about-stat-num {
    font-family: var(--font-en);
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
    margin-bottom: 4px;
}

.about-stat-label {
    font-size: 12px;
    color: var(--color-text-dark);
}

/* ============================================
   核心特色
   ============================================ */
.features {
    background: var(--color-bg);
    position: relative;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.features::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    padding: 36px 28px;
    text-align: center;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    opacity: 0;
    transition: opacity var(--transition-speed);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card:hover {
    border-color: var(--color-border-light);
    transform: translateY(-8px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

.feature-card-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, rgba(74, 124, 63, 0.2), rgba(232, 137, 47, 0.1));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--color-primary-light);
    transition: all var(--transition-speed);
}

.feature-card:hover .feature-card-icon {
    background: linear-gradient(135deg, rgba(74, 124, 63, 0.3), rgba(232, 137, 47, 0.2));
    transform: scale(1.1);
}

.feature-card-title {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}

.feature-card-desc {
    font-size: 14px;
    color: var(--color-text-dim);
    line-height: 1.7;
}

/* ============================================
   游戏截图
   ============================================ */
.gallery {
    background: var(--color-bg-alt);
    position: relative;
}

.gallery::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.gallery-container {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    overflow: hidden;
    border-radius: 20px;
    border: 1px solid var(--color-border);
}

.gallery-track {
    display: flex;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.gallery-slide {
    min-width: 100%;
    aspect-ratio: 16 / 9;
}

.gallery-img {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.gallery-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.gallery-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    color: rgba(255, 255, 255, 0.3);
}

.gallery-placeholder i {
    font-size: 64px;
    opacity: 0.5;
}

.gallery-placeholder span {
    font-size: 18px;
    letter-spacing: 4px;
    text-transform: uppercase;
    font-family: var(--font-en);
    opacity: 0.6;
}

.gallery-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(10, 14, 10, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #fff;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-speed);
    z-index: 10;
}

.gallery-btn:hover {
    background: rgba(74, 124, 63, 0.6);
    border-color: var(--color-primary);
}

.gallery-btn-prev { left: 16px; }
.gallery-btn-next { right: 16px; }

.gallery-dots {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 10;
}

.gallery-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all var(--transition-speed);
    border: none;
}

.gallery-dot.active {
    background: var(--color-primary);
    width: 28px;
    border-radius: 5px;
}

/* ============================================
   玩家评价
   ============================================ */
.reviews {
    background: var(--color-bg);
}

.reviews-score {
    text-align: center;
    margin-bottom: 48px;
}

.reviews-score-num {
    font-family: var(--font-en);
    font-size: 72px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 12px;
}

.reviews-score-stars {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 12px;
}

.reviews-score-stars i {
    font-size: 28px;
    color: #f1c40f;
}

.reviews-score-label {
    font-size: 14px;
    color: var(--color-text-dark);
    letter-spacing: 1px;
}

.reviews-carousel {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.review-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 32px 24px;
    transition: all var(--transition-speed);
}

.review-card:hover {
    border-color: var(--color-border-light);
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.review-stars {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
}

.review-stars i {
    font-size: 16px;
    color: #f1c40f;
}

.review-text {
    font-size: 14px;
    color: var(--color-text-dim);
    line-height: 1.8;
    margin-bottom: 20px;
    font-style: italic;
}

.review-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.review-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.review-author-info {
    display: flex;
    flex-direction: column;
}

.review-author-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
}

.review-author-game {
    font-size: 12px;
    color: var(--color-text-dark);
}

/* ============================================
   下载区域
   ============================================ */
.download {
    background: var(--color-bg-alt);
    position: relative;
}

.download::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.download-content {
    text-align: center;
}

.download-desc {
    font-size: 18px;
    color: var(--color-text-dim);
    margin-bottom: 40px;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 40px;
    border-radius: 16px;
    transition: all var(--transition-speed);
    min-width: 240px;
}

.download-btn i {
    font-size: 36px;
}

.download-btn-text {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.download-btn-text small {
    font-size: 12px;
    opacity: 0.7;
    font-weight: 400;
}

.download-btn-text strong {
    font-size: 18px;
    font-weight: 700;
}

.android-btn {
    background: linear-gradient(135deg, #3ddc84, #1b8a3d);
    color: #fff;
    box-shadow: 0 4px 20px rgba(61, 220, 132, 0.3);
}

.android-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(61, 220, 132, 0.4);
}

.download-info {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.download-info-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--color-text-dim);
}

.download-info-item i {
    color: var(--color-primary-light);
    width: 20px;
    text-align: center;
}

.download-links {
    margin-top: 12px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.download-qq {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: rgba(232, 137, 47, 0.15);
    border: 1px solid rgba(232, 137, 47, 0.3);
    border-radius: 12px;
    color: #e8892f;
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-speed);
}

.download-qq:hover {
    background: rgba(232, 137, 47, 0.25);
    border-color: #e8892f;
    color: #e8892f;
    transform: translateY(-1px);
}

.taptap-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: rgba(74, 124, 63, 0.15);
    border: 1px solid rgba(74, 124, 63, 0.2);
    border-radius: 12px;
    color: var(--color-primary-light);
    font-size: 14px;
    transition: all var(--transition-speed);
}

.taptap-link:hover {
    background: rgba(74, 124, 63, 0.25);
    border-color: var(--color-primary);
}

/* ============================================
   页脚
   ============================================ */
.footer {
    background: #060806;
    border-top: 1px solid var(--color-border);
    padding: 60px 0 30px;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
}

.footer-logo i {
    color: var(--color-primary-light);
}

.footer-desc {
    font-size: 14px;
    color: var(--color-text-dark);
    margin-bottom: 20px;
    line-height: 1.6;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-dim);
    transition: all var(--transition-speed);
}

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

.footer-links h4,
.footer-contact h4 {
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

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

.footer-links ul li a {
    font-size: 14px;
    color: var(--color-text-dark);
    transition: color var(--transition-speed);
}

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

.footer-contact p {
    font-size: 14px;
    color: var(--color-text-dark);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-contact p i {
    width: 16px;
    color: var(--color-primary-light);
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--color-text-dark);
    margin-bottom: 4px;
}

.footer-disclaimer {
    font-size: 12px !important;
    opacity: 0.6;
}

/* ============================================
   滚动动画
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.feature-card.fade-in {
    transition-delay: calc(var(--card-index, 0) * 0.1s);
}

/* ============================================
   响应式设计
   ============================================ */

/* 平板 */
@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .reviews-carousel {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* 手机 */
@media (max-width: 768px) {
    :root {
        --nav-height: 60px;
    }

    .section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 28px;
    }

    .section-header {
        margin-bottom: 40px;
    }

    /* 导航 */
    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: rgba(10, 14, 10, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 16px 24px;
        gap: 4px;
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: all var(--transition-speed);
        border-bottom: 1px solid var(--color-border);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .nav-link {
        padding: 12px 16px;
        font-size: 16px;
        width: 100%;
    }

    .nav-cta-btn {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    /* 英雄区 */
    .hero-stats {
        gap: 20px;
    }

    .hero-stat-num {
        font-size: 24px;
    }

    .hero-bg {
        background-position: 30% center;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }

    /* 特色 */
    .features-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    /* 截图 */
    .gallery-btn {
        width: 36px;
        height: 36px;
        font-size: 14px;
    }

    .gallery-btn-prev { left: 8px; }
    .gallery-btn-next { right: 8px; }

    /* 下载 */
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }

    .download-btn {
        width: 100%;
        max-width: 320px;
        justify-content: center;
    }

    .download-info {
        gap: 16px;
        flex-direction: column;
        align-items: center;
    }

    /* 页脚 */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer {
        padding: 40px 0 20px;
    }
}

/* 小手机 */
@media (max-width: 480px) {
    .hero-title-line {
        font-size: 36px;
    }

    .hero-title-sub {
        font-size: 14px;
        letter-spacing: 6px;
    }

    .about-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .reviews-score-num {
        font-size: 56px;
    }
}

/* ============================================
   自定义工具类
   ============================================ */
/* 网格线装饰 */
.grid-lines {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(74, 124, 63, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(74, 124, 63, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

/* 渐变文字 */
.gradient-text {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 选中文字颜色 */
::selection {
    background: rgba(74, 124, 63, 0.4);
    color: #fff;
}

/* 滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-border-light);
}