/* ==================== CSS Variables ==================== */
:root {
    --color-bg: #000000;
    --color-bg-secondary: #05050A;
    --color-bg-card: #0C0C14;
    --color-bg-card-hover: #12121C;
    --color-border: rgba(255, 255, 255, 0.06);
    --color-border-hover: rgba(255, 255, 255, 0.14);
    --color-text: #FFFFFF;
    --color-text-secondary: rgba(255, 255, 255, 0.6);
    --color-text-tertiary: rgba(255, 255, 255, 0.35);
    --color-primary: #6366F1;
    --color-primary-hover: #818CF8;
    --color-primary-glow: rgba(99, 102, 241, 0.35);
    --color-accent: #8B5CF6;
    --color-accent-2: #A78BFA;
    --color-success: #22C55E;
    --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-card-hover: 0 20px 60px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 80px rgba(99, 102, 241, 0.15);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

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

ul, ol {
    list-style: none;
}

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

/* ==================== Navbar ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(0, 0, 0, 0.85);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 18px;
    letter-spacing: -0.02em;
}

.logo-icon {
    display: flex;
    align-items: center;
}

.logo-text {
    background: linear-gradient(135deg, #fff 0%, rgba(255, 255, 255, 0.8) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-link {
    font-size: 14px;
    color: var(--color-text-secondary);
    font-weight: 400;
    position: relative;
    padding: 4px 0;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--color-primary);
    transition: var(--transition);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-link-creation {
    font-size: 14px;
    color: var(--color-text-secondary);
    font-weight: 400;
}

.nav-link-creation:hover {
    color: var(--color-primary-hover);
}

.btn-nav-login {
    font-size: 13px;
    padding: 7px 18px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-weight: 500;
    transition: var(--transition);
}

.btn-nav-login:hover {
    background: rgba(255, 255, 255, 0.12);
    color: var(--color-text);
    border-color: var(--color-border-hover);
}

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

.hamburger span {
    display: block;
    width: 22px;
    height: 1.5px;
    background: var(--color-text-secondary);
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 999;
    padding: 32px 24px;
    flex-direction: column;
    gap: 8px;
    opacity: 0;
    transform: translateY(-10px);
    transition: var(--transition);
}

.mobile-menu.active {
    opacity: 1;
    transform: translateY(0);
}

.mobile-menu-link {
    font-size: 16px;
    color: var(--color-text-secondary);
    padding: 14px 0;
    border-bottom: 1px solid var(--color-border);
}

.mobile-menu-link:hover {
    color: var(--color-text);
}

.btn-mobile-login {
    margin-top: 16px;
    text-align: center;
}

/* ==================== Buttons ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-sans);
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: white;
    padding: 12px 28px;
    border-radius: 12px;
    font-size: 15px;
    box-shadow: 0 4px 20px var(--color-primary-glow);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 30px var(--color-primary-glow);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.06);
    color: var(--color-text-secondary);
    padding: 12px 28px;
    border-radius: 12px;
    font-size: 15px;
    border: 1px solid var(--color-border);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text);
    border-color: var(--color-border-hover);
}

.btn-outline {
    background: transparent;
    color: var(--color-text);
    padding: 12px 28px;
    border-radius: 12px;
    font-size: 15px;
    border: 1px solid var(--color-border);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--color-border-hover);
}

/* ==================== Particles Canvas ==================== */
.particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

/* ==================== Hero Section ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 64px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(150px);
}

.hero-glow-1 {
    width: 800px;
    height: 800px;
    background: var(--color-primary);
    top: -300px;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0.12;
    animation: glowPulse 8s ease-in-out infinite;
}

.hero-glow-2 {
    width: 600px;
    height: 600px;
    background: var(--color-accent);
    bottom: -200px;
    right: -200px;
    opacity: 0.08;
    animation: glowPulse 10s ease-in-out infinite 2s;
}

.hero-glow-3 {
    width: 500px;
    height: 500px;
    background: #3B82F6;
    bottom: -100px;
    left: -200px;
    opacity: 0.06;
    animation: glowPulse 12s ease-in-out infinite 4s;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.08; transform: translateX(-50%) scale(1); }
    50% { opacity: 0.15; transform: translateX(-50%) scale(1.1); }
}

.hero-glow-2, .hero-glow-3 {
    animation-name: glowPulse2;
}

@keyframes glowPulse2 {
    0%, 100% { opacity: 0.06; transform: scale(1); }
    50% { opacity: 0.12; transform: scale(1.15); }
}

.hero-orb {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(99, 102, 241, 0.15);
    animation: orbFloat 20s linear infinite;
}

.hero-orb-1 {
    width: 400px;
    height: 400px;
    top: 10%;
    right: -5%;
}

.hero-orb-2 {
    width: 300px;
    height: 300px;
    bottom: 15%;
    left: -3%;
    animation-duration: 25s;
    animation-direction: reverse;
}

@keyframes orbFloat {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse 70% 50% at 50% 40%, black, transparent);
    -webkit-mask-image: radial-gradient(ellipse 70% 50% at 50% 40%, black, transparent);
}

.hero-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    padding-top: 60px;
    padding-bottom: 40px;
}

.hero-center {
    text-align: center;
    max-width: 860px;
    animation: heroFadeIn 1s ease-out;
}

@keyframes heroFadeIn {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    border-radius: 40px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.2);
    font-size: 14px;
    color: var(--color-primary-hover);
    font-weight: 500;
    margin-bottom: 32px;
    animation: badgePulse 3s ease-in-out infinite;
}

@keyframes badgePulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0); }
    50% { box-shadow: 0 0 20px 4px rgba(99, 102, 241, 0.15); }
}

.hero-badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-success);
    animation: dotBlink 2s ease-in-out infinite;
}

@keyframes dotBlink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.hero-title {
    font-size: 80px;
    font-weight: 900;
    line-height: 1.15;
    letter-spacing: -0.04em;
    margin-bottom: 28px;
}

.hero-title-gradient {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent-2) 40%, #C084FC 70%, #E879F9 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 80px rgba(139, 92, 246, 0.3);
}

.hero-subtitle-large {
    font-size: 26px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 24px;
    letter-spacing: 0.12em;
}

.hero-subtitle {
    font-size: 16px;
    color: var(--color-text-tertiary);
    margin-bottom: 48px;
    font-weight: 300;
    line-height: 2;
    letter-spacing: 0.02em;
}

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

.btn-hero {
    padding: 16px 36px;
    font-size: 16px;
    border-radius: 14px;
    font-weight: 600;
}

.btn-hero-secondary {
    padding: 16px 28px;
}

/* Hero Numbers Bar */
.hero-numbers {
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--color-border);
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.hero-numbers-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
}

.hero-number-item {
    text-align: center;
    padding: 32px 20px;
    border-right: 1px solid var(--color-border);
}

.hero-number-item:last-child {
    border-right: none;
}

.hero-number-value {
    font-size: 42px;
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #fff 0%, rgba(255, 255, 255, 0.7) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-number-unit {
    font-size: 22px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary-hover), var(--color-accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-number-label {
    font-size: 14px;
    color: var(--color-text-tertiary);
    font-weight: 400;
}

/* ==================== Sections ==================== */
.section {
    padding: 100px 0;
    position: relative;
    z-index: 1;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 56px;
}

.section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-primary-hover);
    padding: 7px 18px;
    border-radius: 24px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.18);
    margin-bottom: 20px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.section-title {
    font-size: 42px;
    font-weight: 900;
    line-height: 1.2;
    letter-spacing: -0.04em;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ==================== Tech Advantages (自研技术) ==================== */
.section-tech {
    background: var(--color-bg);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.tech-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    padding: 32px 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.tech-card-glow {
    position: absolute;
    top: -40%;
    right: -20%;
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: var(--color-primary);
    filter: blur(100px);
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}

.tech-card:hover .tech-card-glow {
    opacity: 0.08;
}

.tech-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
}

.tech-card-header {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 16px;
}

.tech-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.tech-icon-model {
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.15);
    color: #818CF8;
}

.tech-icon-realism {
    background: rgba(236, 72, 153, 0.1);
    border: 1px solid rgba(236, 72, 153, 0.15);
    color: #F472B6;
}

.tech-icon-sync {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.15);
    color: #4ADE80;
}

.tech-icon-engine {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.15);
    color: #FBBF24;
}

.tech-icon-render {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.15);
    color: #60A5FA;
}

.tech-icon-emotion {
    background: rgba(168, 85, 247, 0.1);
    border: 1px solid rgba(168, 85, 247, 0.15);
    color: #C084FC;
}

.tech-card-meta {
    flex: 1;
    min-width: 0;
}

.tech-title {
    font-size: 20px;
    font-weight: 800;
    margin-bottom: 6px;
    letter-spacing: -0.02em;
}

.tech-subtitle {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary-hover);
    letter-spacing: 0.04em;
}

.tech-desc {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* ==================== Features (三大创作方式) ==================== */
.section-features {
    background: var(--color-bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.feature-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    padding: 36px 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card-glow {
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 200px;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}

.feature-card:nth-child(1) .feature-card-glow { background: #3B82F6; }
.feature-card:nth-child(2) .feature-card-glow { background: #8B5CF6; }
.feature-card:nth-child(3) .feature-card-glow { background: #22C55E; }

.feature-card:hover .feature-card-glow {
    opacity: 0.12;
}

.feature-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
}

.feature-step {
    font-size: 12px;
    font-weight: 700;
    color: var(--color-text-tertiary);
    letter-spacing: 0.15em;
    margin-bottom: 16px;
    text-transform: uppercase;
}

.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
}

.feature-icon-image {
    background: rgba(59, 130, 246, 0.1);
    color: #60A5FA;
    border: 1px solid rgba(59, 130, 246, 0.15);
}

.feature-icon-text {
    background: rgba(139, 92, 246, 0.1);
    color: #C084FC;
    border: 1px solid rgba(139, 92, 246, 0.15);
}

.feature-icon-audio {
    background: rgba(34, 197, 94, 0.1);
    color: #4ADE80;
    border: 1px solid rgba(34, 197, 94, 0.15);
}

.feature-mode-name {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    color: var(--color-primary-hover);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 4px 12px;
    border-radius: 20px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.15);
    margin-bottom: 14px;
}

.feature-title {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.feature-desc {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

.feature-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-primary-hover);
    transition: var(--transition);
}

.feature-link:hover {
    gap: 10px;
    color: var(--color-accent-2);
}

/* ==================== Comparison Table ==================== */
.section-comparison {
    background: var(--color-bg-secondary);
}

.comparison-table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    background: var(--color-bg-card);
    box-shadow: var(--shadow-glow);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 700px;
}

.comparison-table th,
.comparison-table td {
    padding: 18px 24px;
    text-align: center;
    font-size: 14px;
    border-bottom: 1px solid var(--color-border);
}

.comparison-table thead th {
    background: rgba(99, 102, 241, 0.04);
    font-weight: 600;
    font-size: 14px;
    color: var(--color-text-secondary);
    padding: 20px 24px;
}

.comparison-table tbody tr:last-child td {
    border-bottom: none;
}

.comparison-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

.comp-feature-col {
    text-align: left !important;
    width: 20%;
}

.comp-jinghai-col {
    background: rgba(99, 102, 241, 0.06) !important;
    width: 25%;
}

.comp-other-col {
    width: 18.3%;
}

.comp-feature {
    text-align: left !important;
    font-weight: 500;
    color: var(--color-text);
}

.comp-jinghai {
    background: rgba(99, 102, 241, 0.04);
}

.comp-highlight {
    color: var(--color-primary-hover);
    font-weight: 700;
    font-size: 15px;
}

.comp-other {
    color: var(--color-text-tertiary);
}

.comp-brand {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.comp-brand-jinghai {
    color: var(--color-text);
    font-weight: 700;
    font-size: 15px;
}

.comparison-cta {
    text-align: center;
    margin-top: 40px;
}

.btn-lg {
    padding: 16px 40px;
    font-size: 16px;
    border-radius: 14px;
    font-weight: 600;
}

/* ==================== Advantages (核心优势) ==================== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.advantage-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 32px 28px;
    transition: var(--transition);
    position: relative;
}

.advantage-card:hover {
    border-color: var(--color-border-hover);
    background: var(--color-bg-card-hover);
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.advantage-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.12);
    color: var(--color-primary-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.advantage-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.01em;
}

.advantage-desc {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* ==================== Scenes (应用场景) ==================== */
.section-scenes {
    background: var(--color-bg-secondary);
}

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

.scene-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 32px 28px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.scene-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: var(--transition);
}

.scene-card:hover {
    border-color: var(--color-border-hover);
    background: var(--color-bg-card-hover);
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
}

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

.scene-number {
    font-size: 44px;
    font-weight: 900;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.35) 0%, rgba(139, 92, 246, 0.1) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 16px;
    letter-spacing: -0.04em;
}

.scene-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.01em;
}

.scene-desc {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* ==================== Pricing (版本方案) ==================== */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
    max-width: 840px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    padding: 36px 36px;
    position: relative;
    transition: var(--transition);
}

.pricing-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-3px);
}

.pricing-card-highlight {
    border-color: rgba(99, 102, 241, 0.4);
    background: linear-gradient(180deg, rgba(99, 102, 241, 0.06) 0%, var(--color-bg-card) 100%);
    box-shadow: 0 0 60px rgba(99, 102, 241, 0.08);
}

.pricing-card-highlight:hover {
    border-color: rgba(99, 102, 241, 0.6);
    box-shadow: 0 0 80px rgba(99, 102, 241, 0.12);
}

.pricing-badge {
    position: absolute;
    top: -1px;
    right: 32px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: white;
    font-size: 12px;
    font-weight: 700;
    padding: 6px 18px;
    border-radius: 0 0 10px 10px;
    letter-spacing: 0.05em;
}

.pricing-name {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    gap: 4px;
    margin-bottom: 28px;
}

.pricing-currency {
    font-size: 22px;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.pricing-amount {
    font-size: 48px;
    font-weight: 900;
    letter-spacing: -0.04em;
    line-height: 1;
}

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

.pricing-features {
    margin-bottom: 28px;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    font-size: 14px;
    color: var(--color-text-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features li svg {
    color: var(--color-success);
    flex-shrink: 0;
}

.btn-pricing {
    width: 100%;
    padding: 15px 24px;
    font-weight: 600;
}

/* ==================== FAQ ==================== */
.faq-list {
    max-width: 760px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
}

.faq-item:first-child {
    border-top: 1px solid var(--color-border);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    background: none;
    border: none;
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
}

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

.faq-arrow {
    transition: var(--transition);
    flex-shrink: 0;
    color: var(--color-text-tertiary);
}

.faq-item.active .faq-arrow {
    transform: rotate(180deg);
    color: var(--color-primary);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-item.active .faq-answer {
    max-height: 200px;
}

.faq-answer p {
    padding-bottom: 20px;
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* ==================== CTA Section ==================== */
.section-cta {
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.cta-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.cta-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.12) 0%, rgba(139, 92, 246, 0.05) 40%, transparent 70%);
    animation: ctaGlow 6s ease-in-out infinite;
}

@keyframes ctaGlow {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.8; }
    50% { transform: translate(-50%, -50%) scale(1.15); opacity: 1; }
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text-secondary);
}

.cta-desc-large {
    font-size: 44px;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #fff, var(--color-accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-desc {
    font-size: 16px;
    color: var(--color-text-tertiary);
    margin-bottom: 36px;
}

.cta-actions {
    margin-bottom: 28px;
}

.btn-cta {
    padding: 18px 48px;
    font-size: 17px;
    border-radius: 16px;
    font-weight: 700;
}

.cta-trust {
    font-size: 14px;
    color: var(--color-text-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.cta-trust strong {
    color: var(--color-text-secondary);
}

.cta-trust-sep {
    opacity: 0.3;
}

/* ==================== Footer ==================== */
.footer {
    padding: 56px 0 28px;
    border-top: 1px solid var(--color-border);
    position: relative;
    z-index: 1;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 16px;
    margin-bottom: 16px;
}

.footer-brand-desc {
    font-size: 14px;
    color: var(--color-text-tertiary);
    line-height: 1.8;
}

.footer-links-group h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--color-text-secondary);
}

.footer-links-group a {
    display: block;
    font-size: 14px;
    color: var(--color-text-tertiary);
    padding: 6px 0;
    transition: var(--transition);
}

.footer-links-group a:hover {
    color: var(--color-text);
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

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

/* ==================== Responsive ==================== */
@media (min-width: 1440px) {
    :root {
        --max-width: 1280px;
    }

    .hero-title {
        font-size: 88px;
    }

    .hero-subtitle-large {
        font-size: 28px;
    }

    .section {
        padding: 120px 0;
    }

    .section-cta {
        padding: 120px 0;
    }

    .section-title {
        font-size: 46px;
    }

    .section-header {
        margin: 0 auto 64px;
    }
}

@media (max-width: 1024px) {
    .hero-title {
        font-size: 60px;
    }

    .hero-subtitle-large {
        font-size: 22px;
    }

    .hero-number-value {
        font-size: 32px;
    }

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

    .hero-numbers-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .section-title {
        font-size: 36px;
    }

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

    .section {
        padding: 80px 0;
    }

    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr;
        gap: 32px;
    }
}

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

    .hamburger {
        display: flex;
    }

    .mobile-menu.show {
        display: flex;
    }

    .hero {
        min-height: auto;
        padding-top: 64px;
    }

    .hero-title {
        font-size: 40px;
    }

    .hero-subtitle-large {
        font-size: 18px;
    }

    .hero-subtitle {
        font-size: 15px;
    }

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

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

    .btn-hero,
    .btn-hero-secondary {
        width: 100%;
        max-width: 320px;
    }

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

    .hero-number-item {
        padding: 24px 16px;
    }

    .hero-number-item:nth-child(2) {
        border-right: none;
    }

    .hero-number-item:nth-child(3),
    .hero-number-item:nth-child(4) {
        border-top: 1px solid var(--color-border);
    }

    .hero-number-item:nth-child(4) {
        border-right: none;
    }

    .section {
        padding: 64px 0;
    }

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

    .features-grid,
    .advantages-grid,
    .scenes-grid {
        grid-template-columns: 1fr;
    }

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

    .section-cta {
        padding: 72px 0;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .cta-desc-large {
        font-size: 28px;
    }

    .cta-title {
        font-size: 22px;
    }

    .cta-trust {
        flex-direction: column;
        gap: 8px;
    }

    .cta-trust-sep {
        display: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-title {
        font-size: 34px;
    }

    .hero-subtitle-large {
        font-size: 16px;
        letter-spacing: 0.06em;
    }

    .hero-badge {
        font-size: 12px;
        padding: 6px 14px;
    }

    .feature-card {
        padding: 32px 24px;
    }

    .pricing-card {
        padding: 32px 24px;
    }

    .pricing-amount {
        font-size: 36px;
    }

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

/* ==================== Animations ==================== */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes spin {
    to { transform: rotate(360deg); }
}