:root {
    --bg: #0f172a;
    --bg-soft: #111b31;
    --surface: rgba(255, 255, 255, 0.05);
    --surface-strong: rgba(255, 255, 255, 0.08);
    --text: #f8fafc;
    --muted: #a8b3cf;
    --line: rgba(148, 163, 184, 0.24);
    --brand: #42d392;
    --brand-2: #33a06f;
    --shadow: 0 20px 46px rgba(8, 15, 36, 0.46);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    color: var(--text);
    font-family: "Inter", "Noto Sans SC", "PingFang SC", "Helvetica Neue", sans-serif;
    background:
        radial-gradient(circle at 18% 18%, rgba(66, 211, 146, 0.2), transparent 26%),
        radial-gradient(circle at 83% 5%, rgba(96, 165, 250, 0.18), transparent 24%),
        linear-gradient(180deg, #0b1120 0%, #111a30 64%, #0d1629 100%);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -2;
    background-image: linear-gradient(rgba(148, 163, 184, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148, 163, 184, 0.06) 1px, transparent 1px);
    background-size: 28px 28px;
    mask-image: radial-gradient(circle at center, black 38%, transparent 95%);
}

.hero-glow {
    position: fixed;
    z-index: -1;
    filter: blur(45px);
    pointer-events: none;
}

.hero-glow-a {
    width: 320px;
    height: 320px;
    left: -80px;
    top: -70px;
    background: rgba(66, 211, 146, 0.42);
    animation: float 10s ease-in-out infinite;
}

.hero-glow-b {
    width: 360px;
    height: 360px;
    right: -90px;
    top: 70px;
    background: rgba(96, 165, 250, 0.36);
    animation: float 12s ease-in-out infinite reverse;
}

.container {
    width: min(1120px, 92%);
    margin: 0 auto;
}

.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 0;
    gap: 1rem;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    color: var(--text);
    text-decoration: none;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.brand-dot {
    width: 13px;
    height: 13px;
    border-radius: 4px;
    background: linear-gradient(135deg, var(--brand), #8ddfbc);
    box-shadow: 0 0 18px rgba(66, 211, 146, 0.7);
}

.nav-links {
    display: inline-flex;
    gap: 1rem;
}

.nav-links a {
    color: var(--muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.94rem;
    transition: color 0.2s ease;
}

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

.lang-toggle {
    border: 1px solid var(--line);
    background: var(--surface);
    color: var(--text);
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.86rem;
    padding: 0.42rem 0.82rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.lang-toggle:hover {
    border-color: rgba(66, 211, 146, 0.65);
    box-shadow: 0 0 0 2px rgba(66, 211, 146, 0.15);
}

.header-actions {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
}

.github-link {
    border: 1px solid var(--line);
    background: var(--surface);
    color: var(--text);
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.86rem;
    padding: 0.42rem 0.82rem;
    text-decoration: none;
    transition: all 0.2s ease;
}

.github-link:hover {
    border-color: rgba(96, 165, 250, 0.7);
    box-shadow: 0 0 0 2px rgba(96, 165, 250, 0.18);
}

.hero {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: 1.35rem;
    padding: 2.8rem 0 2.2rem;
}

.hero-badge {
    display: inline-block;
    margin: 0;
    padding: 0.35rem 0.75rem;
    border: 1px solid rgba(66, 211, 146, 0.36);
    border-radius: 999px;
    background: rgba(66, 211, 146, 0.14);
    color: #9ef3cb;
    font-size: 0.86rem;
    font-weight: 600;
}

.hero-title {
    margin: 0.85rem 0 0.95rem;
    font-size: clamp(2rem, 5vw, 3.8rem);
    line-height: 1.06;
    letter-spacing: -0.02em;
    max-width: 12ch;
    background: linear-gradient(90deg, #ffffff 0%, #c6ffe6 42%, #86efac 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-desc {
    margin: 0;
    color: var(--muted);
    max-width: 58ch;
}

.hero-actions {
    margin-top: 1.35rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.72rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    border-radius: 999px;
    font-weight: 650;
    padding: 0.66rem 1.15rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
    color: #092318;
    background: linear-gradient(135deg, #42d392 0%, #86efac 100%);
    box-shadow: 0 9px 24px rgba(66, 211, 146, 0.32);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 13px 27px rgba(66, 211, 146, 0.4);
}

.btn-ghost {
    color: var(--text);
    border: 1px solid var(--line);
    background: var(--surface);
}

.btn-ghost:hover {
    transform: translateY(-2px);
    border-color: rgba(148, 163, 184, 0.5);
}

.hero-note {
    margin: 0.8rem 0 0;
    font-size: 0.9rem;
    color: #88a0c7;
}

.hero-panel {
    background: linear-gradient(180deg, rgba(17, 27, 49, 0.82), rgba(15, 24, 44, 0.9));
    border: 1px solid var(--line);
    border-radius: 18px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.panel-head {
    display: flex;
    gap: 0.4rem;
    padding: 0.8rem 0.95rem;
    border-bottom: 1px solid var(--line);
}

.panel-head span {
    width: 0.64rem;
    height: 0.64rem;
    border-radius: 50%;
}

.panel-head span:nth-child(1) {
    background: #fb7185;
}

.panel-head span:nth-child(2) {
    background: #facc15;
}

.panel-head span:nth-child(3) {
    background: #34d399;
}

.panel-figure {
    margin: 0;
    padding: 0.8rem;
}

.panel-image {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 12px;
    border: 1px solid rgba(148, 163, 184, 0.3);
    box-shadow: 0 10px 22px rgba(8, 15, 36, 0.35);
}

.features {
    padding: 1.4rem 0 1.1rem;
}

.section-title {
    margin: 0 0 1rem;
    font-size: clamp(1.4rem, 2.8vw, 2rem);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.95rem;
}

.feature-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 1.06rem;
    backdrop-filter: blur(10px);
    transition: transform 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: rgba(66, 211, 146, 0.42);
    background: var(--surface-strong);
}

.feature-card h3 {
    margin: 0 0 0.46rem;
    font-size: 1.02rem;
}

.feature-card p {
    margin: 0;
    color: var(--muted);
    font-size: 0.95rem;
}

.workflow {
    margin-top: 1.9rem;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 1.2rem;
    backdrop-filter: blur(10px);
}

.workflow-list {
    margin: 0;
    padding-left: 1.2rem;
    color: var(--muted);
}

.workflow-list li + li {
    margin-top: 0.4rem;
}

.site-footer {
    border-top: 1px solid var(--line);
    margin-top: 2.1rem;
    padding: 1.15rem 0 1.8rem;
    color: #8ea1c6;
}

.reveal {
    opacity: 0;
    transform: translateY(15px);
    animation: reveal-up 0.72s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

.feature-grid .reveal:nth-child(1) {
    animation-delay: 0.08s;
}

.feature-grid .reveal:nth-child(2) {
    animation-delay: 0.14s;
}

.feature-grid .reveal:nth-child(3) {
    animation-delay: 0.2s;
}

.feature-grid .reveal:nth-child(4) {
    animation-delay: 0.26s;
}

.feature-grid .reveal:nth-child(5) {
    animation-delay: 0.32s;
}

.feature-grid .reveal:nth-child(6) {
    animation-delay: 0.38s;
}

@keyframes reveal-up {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%,
    100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(12px);
    }
}

@media (max-width: 980px) {
    .hero {
        grid-template-columns: 1fr;
    }

    .hero-title {
        max-width: none;
    }

    .feature-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 720px) {
    .nav-links {
        display: none;
    }

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

    .hero {
        padding-top: 1.6rem;
    }

    .hero-actions {
        width: 100%;
    }

    .btn {
        flex: 1;
        min-width: 130px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .reveal,
    .hero-glow,
    .feature-card,
    .btn {
        animation: none;
        transition: none;
        transform: none;
    }
}