/* ========================================
   HyperLiquidZH 官方网站 - 核心样式
   ======================================== */

:root {
    /* 颜色系统 */
    --color-bg-primary: #0a0e27;
    --color-bg-secondary: #0f1419;
    --color-bg-tertiary: #1a1f3a;
    --color-border: rgba(0, 212, 255, 0.1);
    --color-border-light: rgba(255, 255, 255, 0.05);

    --color-text-primary: #e4e4e7;
    --color-text-secondary: #a1a1a6;
    --color-text-tertiary: #71717a;

    /* 强调色 */
    --color-accent-blue: #00d4ff;
    --color-accent-purple: #7c3aed;
    --color-accent-pink: #ec4899;
    --color-accent-orange: #f97316;

    /* 布局 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* 圆角 */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;

    /* 过渡 */
    --transition-fast: 200ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;

    /* 字体 */
    --font-primary: 'Noto Sans SC', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Courier New', monospace;
}

/* ========================================
   全局重置
   ======================================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--color-accent-blue);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent-pink);
}

button {
    font-family: var(--font-primary);
    cursor: pointer;
    border: none;
    background: none;
}

/* ========================================
   容器和栅格
   ======================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ========================================
   导航栏
   ======================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 70px;
    background-color: rgba(10, 14, 39, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.navbar.scrolled {
    background-color: rgba(10, 14, 39, 0.95);
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.05);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
    display: block;
    animation: fadeIn 0.6s ease-out;
}

.logo-text {
    font-size: 18px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-accent-blue), var(--color-accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.logo-zh {
    font-size: 12px;
    margin-left: 4px;
    opacity: 0.7;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    font-size: 14px;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent-blue), var(--color-accent-purple));
    transition: width var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-accent-blue);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    background: none;
    border: none;
    padding: var(--spacing-xs);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--color-accent-blue);
    border-radius: 1px;
    transition: all var(--transition-fast);
}

/* ========================================
   Hero 区域
   ======================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 70px;
    padding: var(--spacing-2xl) 0;
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: -1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-bg-image {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    opacity: 0.3;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(
        ellipse 80% 50% at 50% 0%,
        rgba(0, 212, 255, 0.1) 0%,
        rgba(124, 58, 237, 0.05) 40%,
        rgba(10, 14, 39, 1) 100%
    );
    z-index: 2;
}

.hero-grid {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0.3;
    z-index: 3;
}

.hero-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(2px 2px at 20% 30%, rgba(0, 212, 255, 0.5), transparent),
        radial-gradient(2px 2px at 60% 70%, rgba(124, 58, 237, 0.3), transparent),
        radial-gradient(1px 1px at 50% 50%, rgba(236, 72, 153, 0.2), transparent),
        radial-gradient(1px 1px at 80% 10%, rgba(0, 212, 255, 0.2), transparent);
    background-size: 200% 200%;
    background-position: 0% 0%;
    animation: drift 20s ease-in-out infinite;
}

@keyframes drift {
    0%, 100% { background-position: 0% 0%; }
    50% { background-position: 50% 50%; }
}

.hero-content {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    width: 100%;
    max-width: 1200px;
    padding: 0 var(--spacing-lg);
}

.hero-text {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -1px;
    color: #fff;
    margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
    font-size: 18px;
    line-height: 1.7;
    color: var(--color-text-secondary);
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.btn {
    padding: 14px 32px;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 600;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent-blue), var(--color-accent-purple));
    color: #fff;
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(0, 212, 255, 0.2);
}

.btn-secondary {
    background: transparent;
    color: var(--color-accent-blue);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-accent-blue);
    background: rgba(0, 212, 255, 0.05);
}

.btn-arrow {
    transition: transform var(--transition-fast);
}

.btn-primary:hover .btn-arrow {
    transform: translateX(4px);
}

.hero-visual {
    perspective: 1000px;
}

.dashboard-mockup {
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.8), rgba(26, 31, 58, 0.8));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    backdrop-filter: blur(10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: rotateX(5deg) rotateY(-5deg);
}

.dashboard-header {
    display: flex;
    gap: 8px;
    margin-bottom: var(--spacing-lg);
}

.dashboard-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-border);
}

.dashboard-content {
    display: flex;
    align-items: flex-end;
    gap: var(--spacing-sm);
    height: 180px;
}

.chart-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
}

.chart-bar {
    width: 100%;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    transition: all var(--transition-normal);
}

.chart-item:hover .chart-bar {
    transform: scaleY(1.1);
}

.hero-scroll-hint {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: 14px;
    animation: bounce 2s ease-in-out infinite;
}

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

/* ========================================
   通用区域样式
   ======================================== */

section {
    position: relative;
    padding: var(--spacing-2xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    color: #fff;
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: 16px;
    color: var(--color-text-secondary);
}

/* ========================================
   品牌理念区
   ======================================== */

.philosophy {
    background: linear-gradient(
        180deg,
        rgba(10, 14, 39, 1) 0%,
        rgba(26, 31, 58, 0.3) 100%
    );
}

.philosophy-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.philosophy-image {
    overflow: hidden;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.5), rgba(26, 31, 58, 0.5));
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.philosophy-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform var(--transition-slow);
    object-fit: contain;
    max-width: 100%;
}

.philosophy-image:hover img {
    transform: scale(1);
}

.philosophy-text h3 {
    font-size: 28px;
    color: #fff;
    margin-bottom: var(--spacing-lg);
}

.philosophy-text p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.philosophy-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.feature-item {
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.5), rgba(26, 31, 58, 0.5));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.feature-item:hover {
    border-color: var(--color-accent-blue);
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.8), rgba(26, 31, 58, 0.8));
}

.feature-item h4 {
    font-size: 14px;
    color: #fff;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.feature-item p {
    font-size: 13px;
    color: var(--color-text-secondary);
}

.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.philosophy-item {
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.5), rgba(26, 31, 58, 0.5));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.philosophy-item:hover {
    border-color: var(--color-accent-blue);
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.8), rgba(26, 31, 58, 0.8));
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 212, 255, 0.1);
}

.philosophy-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(124, 58, 237, 0.1));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-accent-blue);
    margin-bottom: var(--spacing-md);
}

.philosophy-item h3 {
    font-size: 18px;
    margin-bottom: var(--spacing-sm);
    color: #fff;
}

.philosophy-item p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

/* ========================================
   应用界面展示区
   ======================================== */

.interface {
    background: linear-gradient(
        180deg,
        rgba(26, 31, 58, 0.3) 0%,
        rgba(10, 14, 39, 1) 100%
    );
}

.interface-showcase {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

.interface-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.interface-intro h3 {
    font-size: 24px;
    color: #fff;
    margin-bottom: var(--spacing-md);
}

.interface-intro p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.interface-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    align-items: start;
}

.interface-card {
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.6), rgba(26, 31, 58, 0.6));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.interface-card:hover {
    border-color: var(--color-accent-blue);
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.8), rgba(26, 31, 58, 0.8));
    transform: translateY(-6px);
    box-shadow: 0 16px 32px rgba(0, 212, 255, 0.1);
}

.interface-image-wrapper {
    background: #f5f5f5;
    width: 100%;
    max-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.interface-image {
    width: 100%;
    height: auto;
    object-fit: contain;
    max-height: 100%;
    display: block;
}

.interface-card:hover .interface-image {
    transform: scale(1);
}

.interface-label {
    padding: var(--spacing-lg);
}

.interface-label h4 {
    font-size: 16px;
    color: #fff;
    margin-bottom: var(--spacing-sm);
}

.interface-label p {
    font-size: 13px;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

/* ========================================
   功能展示区
   ======================================== */

.features {
    background: linear-gradient(
        180deg,
        rgba(10, 14, 39, 1) 0%,
        rgba(26, 31, 58, 0.3) 100%
    );
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.6), rgba(26, 31, 58, 0.6));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.feature-card:hover {
    border-color: var(--color-accent-purple);
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.1), rgba(236, 72, 153, 0.05));
    transform: translateY(-6px);
}

.feature-image {
    overflow: hidden;
    background: #f5f5f5;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.feature-image img {
    width: 100%;
    height: auto;
    object-fit: contain;
    transition: transform var(--transition-slow);
    max-width: 100%;
    display: block;
}

.feature-card:hover .feature-image img {
    transform: scale(1);
}

.feature-card h3 {
    font-size: 18px;
    color: #fff;
    margin: var(--spacing-lg) var(--spacing-lg) var(--spacing-sm);
}

.feature-card p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-text-secondary);
    margin: 0 var(--spacing-lg) var(--spacing-lg);
}

/* ========================================
   教育认知区
   ======================================== */

.education {
    background: linear-gradient(
        180deg,
        rgba(26, 31, 58, 0.3) 0%,
        rgba(10, 14, 39, 1) 100%
    );
}

.education-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.education-image {
    overflow: hidden;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.5), rgba(26, 31, 58, 0.5));
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.education-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform var(--transition-slow);
    object-fit: contain;
    max-width: 100%;
}

.education-image:hover img {
    transform: scale(1);
}

.education-text h3 {
    font-size: 28px;
    color: #fff;
    margin-bottom: var(--spacing-lg);
}

.education-text p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.education-modules {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.module-item {
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.5), rgba(26, 31, 58, 0.5));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.module-item:hover {
    border-color: var(--color-accent-pink);
    background: linear-gradient(135deg, rgba(236, 72, 153, 0.1), rgba(124, 58, 237, 0.1));
}

.module-icon {
    font-size: 24px;
    display: block;
    margin-bottom: var(--spacing-sm);
}

.module-item h4 {
    font-size: 14px;
    color: #fff;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.module-item p {
    font-size: 13px;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

/* ========================================
   能力卡片区
   ======================================== */

.capabilities {
    background: linear-gradient(
        180deg,
        rgba(26, 31, 58, 0.3) 0%,
        rgba(10, 14, 39, 1) 100%
    );
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.capability-card {
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.6), rgba(26, 31, 58, 0.6));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.capability-card:hover {
    border-color: var(--color-accent-purple);
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.1), rgba(236, 72, 153, 0.05));
    transform: translateY(-6px);
    box-shadow: 0 16px 32px rgba(124, 58, 237, 0.1);
}

.capability-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.capability-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(124, 58, 237, 0.1));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    flex-shrink: 0;
    color: var(--color-accent-blue);
}

.capability-card:hover .capability-icon {
    border-color: var(--color-accent-purple);
    color: var(--color-accent-purple);
}

.capability-header h3 {
    font-size: 18px;
    color: #fff;
}

.capability-card p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

.capability-tag {
    font-size: 12px;
    color: var(--color-accent-blue);
    opacity: 0.7;
}

/* ========================================
   平台系统区
   ======================================== */

.system {
    background: linear-gradient(
        180deg,
        rgba(10, 14, 39, 1) 0%,
        rgba(26, 31, 58, 0.3) 100%
    );
}

.system-grid {
    display: grid;
    gap: var(--spacing-2xl);
}

.system-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.system-item:nth-child(even) {
    grid-template-columns: 1fr 1fr;
}

.system-item:nth-child(even) .system-image-wrapper {
    order: 2;
}

.system-item:nth-child(even) .system-content {
    order: 1;
}

.system-image-wrapper {
    overflow: hidden;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.5), rgba(26, 31, 58, 0.5));
    aspect-ratio: 16/10;
}

.system-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.system-image-wrapper:hover .system-image {
    transform: scale(1.05);
}

.system-content h3 {
    font-size: 24px;
    margin-bottom: var(--spacing-md);
    color: #fff;
}

.system-content p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.system-features {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.feature-tag {
    padding: 6px 12px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 12px;
    color: var(--color-accent-blue);
}

/* ========================================
   方法体系区
   ======================================== */

.methodology {
    background: linear-gradient(
        180deg,
        rgba(26, 31, 58, 0.3) 0%,
        rgba(10, 14, 39, 1) 100%
    );
}

.methodology-content {
    display: block;
}

.methodology-flow {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--spacing-lg);
    align-items: start;
}

.flow-step {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.6), rgba(26, 31, 58, 0.6));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    position: relative;
    text-align: center;
    transition: all var(--transition-normal);
}

.flow-step:hover {
    border-color: var(--color-accent-blue);
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.8), rgba(26, 31, 58, 0.8));
    transform: translateY(-4px);
}

.flow-number {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-accent-blue), var(--color-accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.flow-step h4 {
    font-size: 16px;
    color: #fff;
    margin-bottom: var(--spacing-xs);
}

.flow-step p {
    font-size: 13px;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

.flow-connector {
    display: none;
}

.methodology-visual {
    display: grid;
    gap: var(--spacing-lg);
}

.matrix-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.matrix-cell {
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.8), rgba(26, 31, 58, 0.8));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
}

.matrix-label {
    font-size: 12px;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.matrix-value {
    font-size: 36px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-accent-blue), var(--color-accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-top: var(--spacing-sm);
}

/* ========================================
   应用场景区
   ======================================== */

.scenarios {
    background: linear-gradient(
        180deg,
        rgba(10, 14, 39, 1) 0%,
        rgba(26, 31, 58, 0.3) 100%
    );
}

.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.scenario-card {
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.6), rgba(26, 31, 58, 0.6));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
    text-align: center;
}

.scenario-card:hover {
    border-color: var(--color-accent-pink);
    background: linear-gradient(135deg, rgba(236, 72, 153, 0.1), rgba(124, 58, 237, 0.1));
    transform: translateY(-6px);
    box-shadow: 0 16px 32px rgba(236, 72, 153, 0.1);
}

.scenario-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(236, 72, 153, 0.1));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin: 0 auto var(--spacing-lg);
    color: var(--color-accent-pink);
}

.scenario-card:hover .scenario-icon {
    border-color: var(--color-accent-pink);
}

.scenario-card h3 {
    font-size: 18px;
    color: #fff;
    margin-bottom: var(--spacing-sm);
}

.scenario-card p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

/* ========================================
   数据展示区
   ======================================== */

.data-showcase {
    background: linear-gradient(
        180deg,
        rgba(26, 31, 58, 0.3) 0%,
        rgba(10, 14, 39, 1) 100%
    );
}

.data-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.data-card {
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.8), rgba(26, 31, 58, 0.8));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.data-card:hover {
    border-color: var(--color-accent-blue);
    box-shadow: 0 12px 24px rgba(0, 212, 255, 0.1);
}

.data-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.data-header h4 {
    font-size: 14px;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-badge {
    font-size: 11px;
    padding: 4px 8px;
    background: rgba(0, 212, 255, 0.1);
    color: var(--color-accent-blue);
    border-radius: var(--radius-sm);
}

.data-value {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.number {
    font-size: 32px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-accent-blue), var(--color-accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.unit {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.progress-bar {
    height: 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

.progress-fill {
    height: 100%;
    border-radius: 4px;
}

.data-trend {
    font-size: 12px;
    color: var(--color-accent-blue);
}

.trend-up {
    color: #22c55e;
}

.risk-indicators {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin: var(--spacing-md) 0;
}

.risk-level {
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 11px;
}

.risk-level.low {
    background: rgba(34, 197, 94, 0.1);
    color: #22c55e;
}

.risk-level.medium {
    background: rgba(249, 115, 22, 0.1);
    color: var(--color-accent-orange);
}

.risk-level.high {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

.signal-dots {
    display: flex;
    gap: 6px;
    justify-content: center;
    margin: var(--spacing-md) 0;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.data-description {
    font-size: 12px;
    color: var(--color-text-secondary);
}

.data-chart {
    margin-bottom: var(--spacing-md);
}

/* ========================================
   知识与认知支持区
   ======================================== */

.knowledge {
    background: linear-gradient(
        180deg,
        rgba(10, 14, 39, 1) 0%,
        rgba(26, 31, 58, 0.3) 100%
    );
}

.knowledge-tabs {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.tab-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-lg);
}

.tab-btn {
    padding: 8px 16px;
    background: transparent;
    color: var(--color-text-secondary);
    font-size: 14px;
    border: none;
    cursor: pointer;
    position: relative;
    transition: color var(--transition-fast);
}

.tab-btn.active {
    color: var(--color-accent-blue);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -var(--spacing-lg);
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-accent-blue);
}

.tab-btn:hover {
    color: var(--color-accent-blue);
}

.tab-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.knowledge-item {
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.5), rgba(26, 31, 58, 0.5));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.knowledge-item:hover {
    border-color: var(--color-accent-blue);
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.8), rgba(26, 31, 58, 0.8));
}

.knowledge-item h3 {
    font-size: 16px;
    color: #fff;
    margin-bottom: var(--spacing-sm);
}

.knowledge-item p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

/* ========================================
   下载板块
   ======================================== */

.download {
    background: linear-gradient(
        135deg,
        rgba(10, 14, 39, 1) 0%,
        rgba(26, 31, 58, 0.5) 100%
    );
    padding: var(--spacing-2xl) 0;
}

.download-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

/* 下载按钮区 */
.download-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
    max-width: 600px;
    margin: 0 auto;
}

.download-card {
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.6), rgba(26, 31, 58, 0.6));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.download-card:hover {
    border-color: var(--color-accent-blue);
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.8), rgba(26, 31, 58, 0.8));
    transform: translateY(-8px);
    box-shadow: 0 16px 32px rgba(0, 212, 255, 0.15);
}

.download-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(124, 58, 237, 0.1));
    border-radius: 12px;
    color: var(--color-accent-blue);
    transition: all var(--transition-normal);
}

.download-card:hover .download-icon {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(124, 58, 237, 0.2));
    transform: scale(1.1);
}

.download-card h3 {
    font-size: 20px;
    color: #fff;
    margin: 0;
}

.download-card p {
    font-size: 13px;
    color: var(--color-text-secondary);
    margin: 0;
}

.download-btn {
    width: 100%;
    padding: 12px 24px;
    font-size: 14px;
    background: linear-gradient(135deg, var(--color-accent-blue), var(--color-accent-purple));
    border: none;
    border-radius: 8px;
    color: #fff;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-weight: 600;
}

.download-btn:hover {
    transform: scale(1.02);
    box-shadow: 0 8px 24px rgba(0, 212, 255, 0.3);
}

.download-btn:active {
    transform: scale(0.98);
}

/* 安全认证区 */
.download-security {
    background: linear-gradient(
        135deg,
        rgba(0, 212, 255, 0.05) 0%,
        rgba(124, 58, 237, 0.05) 100%
    );
    border: 1px solid rgba(0, 212, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.download-security h3 {
    font-size: 20px;
    color: #fff;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.security-item {
    text-align: center;
    padding: var(--spacing-md);
    background: rgba(15, 20, 25, 0.4);
    border-radius: 12px;
    border: 1px solid rgba(0, 212, 255, 0.1);
    transition: all var(--transition-normal);
}

.security-item:hover {
    border-color: var(--color-accent-blue);
    background: rgba(15, 20, 25, 0.6);
    transform: translateY(-4px);
}

.security-icon {
    font-size: 32px;
    margin-bottom: var(--spacing-sm);
}

.security-item h4 {
    font-size: 14px;
    color: #fff;
    margin: var(--spacing-sm) 0;
}

.security-item p {
    font-size: 12px;
    color: var(--color-text-secondary);
    margin: 0;
    line-height: 1.5;
}

/* 功能亮点 */
.download-features {
    background: linear-gradient(
        135deg,
        rgba(124, 58, 237, 0.05) 0%,
        rgba(0, 212, 255, 0.05) 100%
    );
    border: 1px solid rgba(124, 58, 237, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.download-features h3 {
    font-size: 20px;
    color: #fff;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.features-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(15, 20, 25, 0.4);
    border-radius: 12px;
    border: 1px solid rgba(124, 58, 237, 0.1);
    transition: all var(--transition-normal);
}

.feature-item:hover {
    border-color: var(--color-accent-purple);
    background: rgba(15, 20, 25, 0.6);
    transform: translateX(4px);
}

.feature-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.feature-text {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* 响应式 */
@media (max-width: 1024px) {
    .security-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .features-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .download-buttons {
        grid-template-columns: 1fr;
    }

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

    .download-security,
    .download-features {
        padding: var(--spacing-lg);
    }
}

/* ========================================
   FAQ 区
   ======================================== */

.faq {
    background: linear-gradient(
        180deg,
        rgba(26, 31, 58, 0.3) 0%,
        rgba(10, 14, 39, 1) 100%
    );
}

.faq-wrapper {
    width: 100%;
}

.faq-list {
    display: grid;
    gap: var(--spacing-md);
    width: 100%;
}

.faq-item {
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.6), rgba(26, 31, 58, 0.6));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.faq-item:hover {
    border-color: var(--color-accent-blue);
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.8), rgba(26, 31, 58, 0.8));
    box-shadow: 0 8px 16px rgba(0, 212, 255, 0.1);
}

.faq-item.active {
    border-color: var(--color-accent-blue);
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.8), rgba(26, 31, 58, 0.8));
}

.faq-question {
    width: 100%;
    padding: var(--spacing-lg);
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    transition: all var(--transition-fast);
    text-align: left;
}

.faq-question:hover {
    color: var(--color-accent-blue);
}

.faq-item.active .faq-question {
    color: var(--color-accent-blue);
}

.faq-question svg {
    width: 24px;
    height: 24px;
    color: var(--color-accent-blue);
    transition: transform var(--transition-normal);
    flex-shrink: 0;
}

.faq-item.active .faq-question svg {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

/* ========================================
   页脚
   ======================================== */

.footer {
    background: linear-gradient(
        180deg,
        rgba(10, 14, 39, 1) 0%,
        rgba(0, 0, 0, 1) 100%
    );
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-2xl) 0;
}

.footer-top {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.footer-logo {
    height: 50px;
    width: auto;
    object-fit: contain;
    display: block;
}

.footer-brand h4 {
    font-size: 18px;
    color: #fff;
}

.footer-brand p {
    font-size: 13px;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.footer-nav {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
    font-size: 14px;
    color: #fff;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-section p {
    font-size: 13px;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.footer-section ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-section a {
    font-size: 13px;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: var(--color-accent-blue);
}

.footer-divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--spacing-xl) 0;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom-left p {
    font-size: 12px;
    color: var(--color-text-tertiary);
}

.footer-bottom-right {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-link {
    font-size: 12px;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-accent-blue);
}

/* ========================================
   返回顶部按钮
   ======================================== */

.scroll-to-top {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-accent-blue), var(--color-accent-purple));
    border: none;
    border-radius: 50%;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 999;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 212, 255, 0.3);
}

/* ========================================
   动画辅助类
   ======================================== */

.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease-out forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    opacity: 0;
    animation: fadeIn 0.6s ease-out forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

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

@media (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .hero-title {
        font-size: 42px;
    }

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

    .philosophy-content {
        grid-template-columns: 1fr;
    }

    .education-content {
        grid-template-columns: 1fr;
    }

    .system-item {
        grid-template-columns: 1fr;
    }

    .system-item:nth-child(even) .system-image-wrapper {
        order: unset;
    }

    .system-item:nth-child(even) .system-content {
        order: unset;
    }

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

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

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

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

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu.active {
        display: flex;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(10, 14, 39, 0.95);
        backdrop-filter: blur(10px);
        padding: var(--spacing-lg);
        gap: var(--spacing-lg);
        border-bottom: 1px solid var(--color-border);
    }

    .logo-img {
        height: 32px;
    }

    .hero {
        padding: var(--spacing-xl) 0;
        min-height: auto;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .hero-buttons {
        flex-direction: column;
    }

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

    .dashboard-mockup {
        transform: none;
    }

    .hero-visual {
        display: none;
    }

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

    .philosophy-features {
        grid-template-columns: 1fr;
    }

    .education-modules {
        grid-template-columns: 1fr;
    }

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

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

    .hero-buttons {
        gap: var(--spacing-sm);
    }

    .hero-buttons .btn {
        font-size: 14px;
        padding: 12px 24px;
    }

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

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

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

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

    .tab-buttons {
        flex-direction: column;
    }

    .tab-content {
        grid-template-columns: 1fr;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }

    .footer-bottom-right {
        justify-content: center;
    }

    section {
        padding: var(--spacing-xl) 0;
    }

    .section-header {
        margin-bottom: var(--spacing-xl);
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 1.5rem;
        --spacing-xl: 2.5rem;
    }

    .navbar {
        height: 60px;
    }

    .logo-img {
        height: 28px;
    }

    .hero {
        margin-top: 60px;
    }

    .hero-title {
        font-size: 24px;
    }

    .hero-subtitle {
        font-size: 14px;
    }

    .section-title {
        font-size: 24px;
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    .hero-buttons {
        gap: var(--spacing-xs);
    }

    .philosophy-item {
        padding: var(--spacing-md);
    }

    .faq-question {
        padding: var(--spacing-md);
    }

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

    .philosophy-features {
        grid-template-columns: 1fr;
    }

    .education-modules {
        grid-template-columns: 1fr;
    }

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

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

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

    .methodology-flow {
        grid-template-columns: 1fr;
    }

    .scroll-to-top {
        width: 44px;
        height: 44px;
        bottom: var(--spacing-md);
        right: var(--spacing-md);
    }

    .interface-image-wrapper {
        padding: var(--spacing-sm);
    }

    .feature-image {
        padding: var(--spacing-sm);
    }
}