:root {
    --bg-dark: #0a0b10;
    --bg-card: rgba(22, 24, 33, 0.7);
    --primary: #6366f1;
    --primary-glow: rgba(99, 102, 241, 0.3);
    --secondary: #2dd4bf;
    --accent: #f43f5e;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass-border: rgba(255, 255, 255, 0.08);
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    width: 100%;
}

/* Background Glow */
.background-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.background-glow::after {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
    top: -200px;
    right: -100px;
    filter: blur(80px);
}

.background-glow::before {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(45, 212, 191, 0.15) 0%, transparent 70%);
    bottom: -100px;
    left: -100px;
    filter: blur(80px);
}

/* Typography */
h1,
h2,
h3,
h4 {
    font-family: var(--font-heading);
    font-weight: 700;
}

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

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-logo {
    height: 32px;
    width: auto;
}

.logo-text {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--text-main);
}

.nav-cta {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.5rem 1.25rem;
    border-radius: 99px;
    border: 1px solid var(--glass-border);
    color: var(--text-main) !important;
}

/* Buttons */
.btn {
    padding: 0.85rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 10px 20px -5px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 30px -5px var(--primary-glow);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: white;
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* ========================================
   Hero Section - 居中布局，直击痛点
   ======================================== */
.hero {
    padding: 10rem 0 6rem;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.25rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 99px;
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 2rem;
}

.badge i {
    width: 16px;
    height: 16px;
}

.hero h1 {
    font-size: clamp(2.8rem, 6vw, 4.5rem);
    line-height: 1.1;
    margin-bottom: 1rem;
}

.hero-tagline {
    font-size: clamp(1.3rem, 3vw, 2rem);
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--text-main);
}

.highlight-old {
    color: var(--accent);
    text-decoration: line-through;
    opacity: 0.7;
}

.highlight-new {
    color: var(--secondary);
    font-weight: 800;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 650px;
    margin: 0 auto 2.5rem;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 4rem;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    padding: 2rem 3rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 20px;
    border: 1px solid var(--glass-border);
}

.hero-stat {
    text-align: center;
}

.hero-stat-num {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    font-family: var(--font-heading);
    color: white;
}

.hero-stat-label {
    color: var(--text-muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    opacity: 0.6;
}

.mouse {
    width: 26px;
    height: 42px;
    border: 2px solid var(--text-muted);
    border-radius: 13px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--primary);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll-wheel 2s infinite;
}

@keyframes scroll-wheel {
    0% {
        top: 6px;
        opacity: 1;
    }

    100% {
        top: 20px;
        opacity: 0;
    }
}

.arrows span {
    display: block;
    width: 10px;
    height: 10px;
    border-bottom: 2px solid var(--text-muted);
    border-right: 2px solid var(--text-muted);
    transform: rotate(45deg);
    margin: -5px;
    animation: arrows 2s infinite;
}

.arrows span:nth-child(2) {
    animation-delay: 0.2s;
}

@keyframes arrows {
    0% {
        opacity: 0;
        transform: rotate(45deg) translate(-10px, -10px);
    }

    50% {
        opacity: 1;
    }

    100% {
        opacity: 0;
        transform: rotate(45deg) translate(5px, 5px);
    }
}

/* ========================================
   Section Common
   ======================================== */
.section-header {
    margin-bottom: 4rem;
}

.center {
    text-align: center;
}

.sub-title {
    color: var(--secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.8rem;
    margin-bottom: 0.75rem;
    display: block;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* ========================================
   Workflow Section - 工作流程
   ======================================== */
.workflow-section {
    padding: 8rem 0;
    position: relative;
}

.workflow-steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
}

.workflow-step {
    flex: 1;
    max-width: 220px;
    text-align: center;
    position: relative;
}

.step-number {
    position: absolute;
    top: -10px;
    right: -5px;
    width: 24px;
    height: 24px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    font-size: 0.7rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.step-icon {
    width: 64px;
    height: 64px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.15);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    margin: 0 auto 1.25rem;
    transition: all 0.3s ease;
}

.workflow-step:hover .step-icon {
    background: rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-4px);
}

.workflow-step h4 {
    font-size: 1.05rem;
    margin-bottom: 0.4rem;
}

.workflow-step p {
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.5;
}

.workflow-connector {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--glass-border);
    padding-top: 1.2rem;
    flex-shrink: 0;
    width: 40px;
}

/* ========================================
   Features Section
   ======================================== */
.features-section {
    padding: 8rem 0;
    background: radial-gradient(circle at 50% 100%, rgba(99, 102, 241, 0.05) 0%, transparent 50%);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(12px);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-glow) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 0;
}

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

.feature-card:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: var(--primary);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.5);
}

.feature-card>* {
    position: relative;
    z-index: 1;
}

.feature-card.featured {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem;
    border-color: rgba(99, 102, 241, 0.2);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(45, 212, 191, 0.05));
}

.feature-card.featured .icon-box {
    margin: 0 auto 1.5rem;
}

.icon-box {
    width: 50px;
    height: 50px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* Platform Tags */
.platform-logos {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    justify-content: center;
    margin-top: 1.5rem;
}

.platform-tag {
    padding: 0.35rem 0.9rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 99px;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
    transition: 0.3s;
}

.platform-tag:hover {
    background: rgba(99, 102, 241, 0.1);
    border-color: rgba(99, 102, 241, 0.3);
    color: var(--text-main);
}

/* ========================================
   Scenarios Section - 适用场景
   ======================================== */
.scenarios-section {
    padding: 8rem 0;
    border-top: 1px solid var(--glass-border);
}

.scenario-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.scenario-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    display: flex;
    flex-direction: column;
}

.scenario-card:hover {
    transform: translateY(-6px);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.5);
}

.scenario-card.highlight {
    border-color: rgba(99, 102, 241, 0.3);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(45, 212, 191, 0.05));
}

.scenario-badge {
    position: absolute;
    top: -12px;
    right: 24px;
    background: var(--primary);
    color: white;
    padding: 0.3rem 1rem;
    border-radius: 99px;
    font-size: 0.75rem;
    font-weight: 600;
}

.scenario-icon {
    width: 52px;
    height: 52px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.scenario-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.scenario-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.scenario-benefits {
    list-style: none;
    margin-bottom: 2rem;
    flex: 1;
}

.scenario-benefits li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.8rem;
    font-size: 0.95rem;
    font-weight: 500;
}

.scenario-benefits i {
    color: var(--secondary);
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.scenario-result {
    padding: 1rem 1.25rem;
    background: rgba(45, 212, 191, 0.05);
    border: 1px solid rgba(45, 212, 191, 0.15);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.result-label {
    color: var(--secondary);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.result-value {
    font-weight: 700;
    font-size: 0.95rem;
}

/* ========================================
   Value Section - 商业价值
   ======================================== */
.value-section {
    padding: 8rem 0;
    background: radial-gradient(circle at 20% 50%, rgba(45, 212, 191, 0.05) 0%, transparent 50%);
}

.value-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}

.value-desc {
    font-size: 1.1rem;
    color: var(--text-main);
    line-height: 1.7;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.value-points {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.value-point {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.value-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

.value-point h4 {
    font-size: 1rem;
    margin-bottom: 0.3rem;
}

.value-point p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.value-text h2 {
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
}

/* Quote Card */
.quote-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
    padding: 3.5rem 2.5rem;
    border-radius: 30px;
    border: 1px solid var(--glass-border);
    position: relative;
    box-shadow: 0 40px 100px -20px rgba(0, 0, 0, 0.5);
}

.quote-icon {
    color: var(--secondary);
    width: 36px;
    height: 36px;
    margin-bottom: 1.5rem;
}

.quote-card p {
    font-size: 1.15rem;
    font-style: italic;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.quote-author {
    display: block;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.9rem;
}

/* ========================================
   Contact & Footer
   ======================================== */
.footer-section {
    padding: 8rem 0 2rem;
}

.cta-box {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(45, 212, 191, 0.15));
    border-radius: 40px;
    padding: 5rem;
    text-align: center;
    border: 1px solid var(--glass-border);
    margin-bottom: 4rem;
}

.cta-box h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.cta-box p {
    color: var(--text-muted);
    font-size: 1.25rem;
    margin-bottom: 3rem;
}

.contact-methods {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.1rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.social-links a {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-main);
    transition: 0.3s;
}

.social-links a:hover {
    background: var(--primary);
    transform: translateY(-5px);
}

/* Copy Tooltip & Contact Style */
.copy-btn {
    cursor: pointer;
    position: relative;
    padding: 0.5rem 1rem;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid transparent;
    transition: all 0.3s ease;
}

.copy-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--primary-glow);
}

.copy-badge {
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: var(--primary);
    color: white;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    pointer-events: none;
    white-space: nowrap;
}

.copy-badge::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid var(--primary);
}

.copy-btn.copied .copy-badge {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.copy-btn.copied {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

.bottom-footer {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--glass-border);
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Mobile Nav Overlay */
.mobile-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-dark);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.77, 0, 0.175, 1);
}

.mobile-nav.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    cursor: pointer;
    color: var(--text-muted);
}

.mobile-nav-links {
    list-style: none;
    text-align: center;
}

.mobile-nav-links li {
    margin: 2rem 0;
    transform: translateY(20px);
    opacity: 0;
    transition: 0.4s;
}

.mobile-nav.active .mobile-nav-links li {
    transform: translateY(0);
    opacity: 1;
}

.mobile-nav-links a {
    text-decoration: none;
    color: var(--text-main);
    font-size: 2rem;
    font-family: var(--font-heading);
    font-weight: 700;
}

/* Mobile Menu Button - hidden by default */
.mobile-menu-btn {
    display: none;
    cursor: pointer;
}

/* ========================================
   Mobile Responsive
   ======================================== */
@media (max-width: 968px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .container {
        padding: 0 1.25rem;
    }

    /* Hero */
    .hero {
        padding: 7rem 0 4rem;
        min-height: auto;
    }

    .hero h1 {
        font-size: clamp(2.2rem, 8vw, 3rem);
    }

    .hero-tagline {
        font-size: clamp(1.1rem, 4vw, 1.5rem);
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
        margin-bottom: 3rem;
    }

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

    .hero-stats {
        flex-wrap: wrap;
        gap: 1.5rem;
        padding: 1.5rem;
    }

    .hero-stat {
        min-width: 80px;
    }

    .hero-stat-num {
        font-size: 1.6rem;
    }

    /* Workflow */
    .workflow-section {
        padding: 4rem 0;
    }

    .workflow-steps {
        flex-direction: column;
        align-items: center;
        gap: 0;
    }

    .workflow-step {
        max-width: 100%;
    }

    .workflow-connector {
        transform: rotate(90deg);
        padding: 0;
        width: auto;
        height: 32px;
    }

    /* Features */
    .features-section {
        padding: 4rem 0;
    }

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

    .feature-card.featured {
        grid-column: auto;
    }

    /* Scenarios */
    .scenarios-section {
        padding: 4rem 0;
    }

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

    /* Value */
    .value-section {
        padding: 4rem 0;
    }

    .value-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .value-text {
        text-align: center;
    }

    .value-points {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .value-point {
        justify-content: center;
        text-align: left;
    }

    /* Section headers */
    .section-header h2 {
        font-size: 2rem;
    }

    /* Footer */
    .footer-section {
        padding: 4rem 0 2rem;
    }

    .cta-box {
        padding: 3rem 1.5rem;
    }

    .cta-box h2 {
        font-size: 1.8rem;
    }

    .contact-methods {
        flex-direction: column;
        gap: 1.5rem;
        align-items: center;
    }
}