:root {
    --bg: #0f172a;
    --bg-card: #1e293b;
    --bg-elevated: #334155;
    --accent: #38bdf8;
    --accent-dim: #7dd3fc;
    --accent-gradient: linear-gradient(135deg, #38bdf8, #818cf8);
    --success: #4ade80;
    --warning: #fbbf24;
    --danger: #f87171;
    --pink: #f472b6;
    --purple: #818cf8;
    --text: #f8fafc;
    --text-dim: #94a3b8;
    --text-muted: #64748b;
    --radius: 20px;
    --radius-sm: 12px;
    --shadow: 0 4px 20px rgba(0, 0, 0, .3);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, .4);
    --max-width: 1100px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
}

::selection {
    background: var(--accent);
    color: var(--bg);
}

::-webkit-scrollbar {
    width: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--bg-elevated);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

.text-accent {
    color: var(--accent);
}

.text-gradient {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity .8s cubic-bezier(.22, 1, .36, 1), transform .8s cubic-bezier(.22, 1, .36, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

#particle-canvas {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background: radial-gradient(ellipse 80% 60% at 50% -10%, rgba(56, 189, 248, .08), transparent),
        radial-gradient(ellipse 60% 50% at 80% 80%, rgba(129, 140, 248, .06), transparent);
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(15, 23, 42, .8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, .05);
}

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

.nav-logo {
    font-weight: 900;
    font-size: 1.25rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
}

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

.nav-links a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: .9rem;
    font-weight: 600;
    transition: color .3s;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: width .3s;
}

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

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

.nav-cta {
    padding: 8px 20px !important;
    border-radius: 8px;
    background: var(--accent-gradient);
    color: #fff !important;
    font-weight: 700 !important;
    transition: transform .3s, box-shadow .3s !important;
}

.nav-cta::after {
    display: none !important;
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(56, 189, 248, .35);
}

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 120px 24px 80px;
    z-index: 1;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(56, 189, 248, .03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(56, 189, 248, .03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, black, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, black, transparent 70%);
}

.hero-content {
    position: relative;
    text-align: center;
    max-width: 700px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    border-radius: 100px;
    background: rgba(56, 189, 248, .1);
    border: 1px solid rgba(56, 189, 248, .2);
    color: var(--accent);
    font-size: .85rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero-title {
    margin-bottom: 24px;
}

.hero-title-sub {
    display: block;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-dim);
    letter-spacing: .15em;
    margin-bottom: 8px;
}

.hero-title-main {
    display: block;
    font-size: clamp(3rem, 10vw, 5.5rem);
    font-weight: 900;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.1;
    letter-spacing: -.03em;
}

.hero-desc {
    font-size: 1.15rem;
    color: var(--text-dim);
    margin-bottom: 40px;
    line-height: 1.8;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 700;
    text-decoration: none;
    transition: transform .3s, box-shadow .3s;
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: 0 4px 20px rgba(56, 189, 248, .3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(56, 189, 248, .4);
}

.btn-ghost {
    color: var(--text-dim);
    background: transparent;
    border: 1px solid rgba(255, 255, 255, .1);
}

.btn-ghost:hover {
    color: var(--text);
    border-color: var(--accent);
    transform: translateY(-2px);
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 32px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: .8rem;
    animation: fadeInUp 1s ease 1.5s both;
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid var(--text-muted);
    border-bottom: 2px solid var(--text-muted);
    transform: rotate(45deg);
    animation: scrollBounce 2s ease infinite;
}

@keyframes scrollBounce {

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

    50% {
        transform: rotate(45deg) translateY(6px);
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

.banner-section {
    position: relative;
    z-index: 1;
    padding: 0 24px 80px;
}

.banner-wrapper {
    max-width: 900px;
    margin: 0 auto;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, .05);
}

.banner-img {
    width: 100%;
    height: auto;
    display: block;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-label {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 100px;
    background: rgba(56, 189, 248, .1);
    border: 1px solid rgba(56, 189, 248, .15);
    color: var(--accent);
    font-size: .8rem;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: .05em;
}

.section-title {
    font-size: clamp(1.5rem, 4vw, 2.2rem);
    font-weight: 900;
    line-height: 1.3;
    margin-bottom: 16px;
}

.section-desc {
    color: var(--text-dim);
    font-size: 1.05rem;
}

.features {
    position: relative;
    z-index: 1;
    padding: 80px 24px 100px;
    max-width: var(--max-width);
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.feature-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 32px 28px;
    border: 1px solid rgba(255, 255, 255, .04);
    transition: transform .4s cubic-bezier(.22, 1, .36, 1), box-shadow .4s;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--card-accent, var(--accent));
    opacity: .5;
    transition: opacity .4s;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 255, 255, .08);
}

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

.feature-icon {
    font-size: 2.2rem;
    margin-bottom: 16px;
    line-height: 1;
}

.feature-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.feature-desc {
    color: var(--text-dim);
    font-size: .92rem;
    line-height: 1.7;
}

.workflow {
    position: relative;
    z-index: 1;
    padding: 100px 24px;
    max-width: 800px;
    margin: 0 auto;
}

.workflow-steps {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.workflow-step {
    display: flex;
    gap: 32px;
    align-items: flex-start;
}

.step-number {
    font-size: 3rem;
    font-weight: 900;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
    flex-shrink: 0;
    min-width: 80px;
}

.step-content {
    flex: 1;
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 28px 32px;
    border: 1px solid rgba(255, 255, 255, .04);
}

.step-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.step-desc {
    color: var(--text-dim);
    font-size: .95rem;
    line-height: 1.7;
    margin-bottom: 12px;
}

.step-code {
    background: var(--bg);
    border-radius: 8px;
    padding: 12px 16px;
    overflow-x: auto;
}

.step-code code {
    font-family: 'Consolas', 'Courier New', monospace;
    font-size: .85rem;
    color: var(--accent);
}

.step-platforms {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.step-platforms span {
    padding: 4px 12px;
    border-radius: 6px;
    background: rgba(255, 255, 255, .05);
    font-size: .85rem;
    font-weight: 600;
    color: var(--text-dim);
}

.workflow-connector {
    width: 2px;
    height: 40px;
    background: linear-gradient(to bottom, var(--accent), transparent);
    margin-left: 39px;
    opacity: .4;
}

.download-section {
    position: relative;
    z-index: 1;
    padding: 80px 24px 100px;
    max-width: var(--max-width);
    margin: 0 auto;
}

.download-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.download-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 36px 28px;
    border: 1px solid rgba(255, 255, 255, .04);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform .4s cubic-bezier(.22, 1, .36, 1), box-shadow .4s;
}

.download-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 255, 255, .08);
}

.download-icon {
    font-size: 3rem;
    margin-bottom: 16px;
    line-height: 1;
}

.download-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.download-desc {
    color: var(--text-dim);
    font-size: .9rem;
    line-height: 1.7;
    margin-bottom: 16px;
    flex: 1;
}

.download-meta {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.download-meta span {
    padding: 4px 12px;
    border-radius: 6px;
    background: rgba(255, 255, 255, .05);
    font-size: .8rem;
    color: var(--text-muted);
    font-weight: 600;
}

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

.guide-section {
    position: relative;
    z-index: 1;
    padding: 80px 24px 100px;
    max-width: 800px;
    margin: 0 auto;
}

.guide-steps {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.guide-step {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 24px 28px;
    border: 1px solid rgba(255, 255, 255, .04);
    transition: transform .3s, box-shadow .3s;
}

.guide-step:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.guide-step-num {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 900;
    color: #fff;
    flex-shrink: 0;
}

.guide-step-body h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.guide-step-body p {
    color: var(--text-dim);
    font-size: .92rem;
    line-height: 1.7;
}

.guide-note {
    margin-top: 24px;
    padding: 16px 24px;
    border-radius: var(--radius-sm);
    background: rgba(56, 189, 248, .06);
    border: 1px solid rgba(56, 189, 248, .12);
    text-align: center;
}

.guide-note p {
    color: var(--accent-dim);
    font-size: .95rem;
    font-weight: 600;
}

.platform-section {
    position: relative;
    z-index: 1;
    padding: 80px 24px 120px;
    max-width: var(--max-width);
    margin: 0 auto;
}

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

.platform-item {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 32px 20px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, .04);
    transition: transform .3s, border-color .3s;
}

.platform-item:hover {
    transform: translateY(-4px);
    border-color: rgba(56, 189, 248, .2);
}

.platform-icon {
    display: block;
    font-size: 2.5rem;
    margin-bottom: 12px;
    line-height: 1;
}

.platform-name {
    display: block;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.platform-type {
    display: block;
    font-size: .82rem;
    color: var(--text-muted);
    font-weight: 600;
}

.footer {
    position: relative;
    z-index: 1;
    background: var(--bg-card);
    border-top: 1px solid rgba(255, 255, 255, .04);
    padding: 48px 24px 32px;
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 32px;
    border-bottom: 1px solid rgba(255, 255, 255, .05);
    margin-bottom: 24px;
}

.footer-logo {
    font-size: 1.2rem;
    font-weight: 900;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer-desc {
    color: var(--text-dim);
    font-size: .9rem;
    margin-top: 4px;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-dim);
    text-decoration: none;
    font-size: .9rem;
    font-weight: 600;
    transition: color .3s;
}

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

.footer-bottom {
    max-width: var(--max-width);
    margin: 0 auto;
    text-align: center;
    color: var(--text-muted);
    font-size: .85rem;
}

.footer-sep {
    margin: 0 8px;
    opacity: .5;
}

@media (max-width: 900px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

@media (max-width: 640px) {
    .nav-links a:not(.nav-cta) {
        display: none;
    }

    .hero {
        min-height: 90vh;
        padding-top: 100px;
    }

    .hero-title-main {
        font-size: clamp(2.5rem, 12vw, 3.5rem);
    }

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

    .features {
        padding: 60px 16px 80px;
    }

    .download-cards {
        grid-template-columns: 1fr;
    }

    .download-section {
        padding: 60px 16px 80px;
    }

    .guide-section {
        padding: 60px 16px 80px;
    }

    .guide-step {
        flex-direction: column;
        align-items: stretch;
    }

    .guide-step-num {
        align-self: flex-start;
    }

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

    .platform-section {
        padding: 60px 16px 80px;
    }

    .footer-inner {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}