:root {
    --bg-cream: #f8f5ec;
    --bg-mint: #e5f5ee;
    --bg-peach: #fbe8d3;
    --panel: #fffdf9cc;
    --panel-solid: #fffdf9;
    --line: #d2ddd6;
    --line-strong: #98b5a8;
    --ink-main: #17241f;
    --ink-soft: #4c5b55;
    --primary: #0e8f70;
    --primary-deep: #0b6a53;
    --accent: #eb8c32;
    --radius-xl: 28px;
    --radius-lg: 20px;
    --radius-md: 14px;
    --shadow-lg: 0 20px 54px rgba(16, 34, 26, 0.14);
    --shadow-md: 0 12px 28px rgba(16, 34, 26, 0.08);
    --font-heading: "Space Grotesk", "Noto Sans SC", "PingFang SC", sans-serif;
    --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    --font-mono: "JetBrains Mono", "Fira Code", monospace;
}

* {
    box-sizing: border-box;
}

.home-page {
    margin: 0;
    min-height: 100vh;
    padding: clamp(1rem, 2.5vw, 2rem);
    font-family: var(--font-body);
    color: var(--ink-main);
    background: linear-gradient(140deg, var(--bg-cream) 0%, #f4f9f6 56%, #fbf7f0 100%);
    position: relative;
    overflow-x: hidden;
}

.ambient-grid {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: 0.26;
    background-image: linear-gradient(rgba(109, 148, 129, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(109, 148, 129, 0.12) 1px, transparent 1px);
    background-size: 34px 34px;
}

.ambient-orb {
    position: fixed;
    z-index: 0;
    pointer-events: none;
    border-radius: 999px;
    filter: blur(2px);
}

.orb-one {
    width: 34rem;
    height: 34rem;
    top: -12rem;
    left: -10rem;
    background: radial-gradient(circle, rgba(14, 143, 112, 0.22) 0%, rgba(14, 143, 112, 0) 70%);
}

.orb-two {
    width: 32rem;
    height: 32rem;
    right: -8rem;
    bottom: -12rem;
    background: radial-gradient(circle, rgba(235, 140, 50, 0.2) 0%, rgba(235, 140, 50, 0) 74%);
}

.home-shell {
    position: relative;
    z-index: 1;
    max-width: 1280px;
    margin: 0 auto;
}

.reveal {
    opacity: 0;
    animation: rise-in 0.76s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    animation-delay: var(--delay, 0ms);
}

@keyframes rise-in {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.hero {
    border-radius: var(--radius-xl);
    border: 1px solid var(--line);
    padding: clamp(1.4rem, 3.8vw, 3rem);
    background: linear-gradient(140deg, rgba(255, 255, 255, 0.9), rgba(229, 245, 238, 0.82));
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(6px);
}

.hero-tag {
    margin: 0;
    display: inline-block;
    padding: 0.42rem 0.78rem;
    border-radius: 999px;
    border: 1px solid rgba(14, 143, 112, 0.22);
    background: rgba(14, 143, 112, 0.1);
    color: var(--primary-deep);
    font-size: 0.84rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hero h1 {
    margin: 0.9rem 0 0.7rem;
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.16;
    font-size: clamp(1.8rem, 3.9vw, 3.15rem);
    max-width: 16.5em;
}

.hero-copy {
    margin: 0;
    max-width: 44rem;
    color: var(--ink-soft);
    line-height: 1.75;
    font-size: clamp(1rem, 1.4vw, 1.1rem);
}

.hero-actions {
    margin-top: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.9rem;
    padding: 0.5rem 1.2rem;
    border-radius: 999px;
    border: 1px solid transparent;
    text-decoration: none;
    font-weight: 700;
    transition: transform 0.22s ease, box-shadow 0.22s ease, background-color 0.22s ease;
}

.cta:hover {
    transform: translateY(-2px);
}

.cta-primary {
    background: linear-gradient(135deg, var(--primary), #159d7c);
    color: #fff;
    box-shadow: 0 10px 20px rgba(14, 143, 112, 0.22);
}

.cta-primary:hover {
    box-shadow: 0 14px 28px rgba(14, 143, 112, 0.3);
}

.cta-ghost {
    background: rgba(255, 255, 255, 0.64);
    border-color: var(--line-strong);
    color: var(--primary-deep);
}

.cta-ghost:hover {
    background: #fff;
}

.content-layout {
    margin-top: clamp(1.1rem, 2.8vw, 1.8rem);
    display: grid;
    align-items: start;
    grid-template-columns: minmax(230px, 300px) 1fr;
    gap: 1.15rem;
}

.quick-panel {
    position: sticky;
    top: 1rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    background: var(--panel);
    padding: 1.2rem 1rem;
    box-shadow: var(--shadow-md);
}

.quick-panel h2 {
    margin: 0;
    font-family: var(--font-heading);
    font-size: 1.28rem;
}

.quick-links {
    margin-top: 0.95rem;
    display: grid;
    gap: 0.6rem;
}

.quick-link {
    padding: 0.62rem 0.78rem;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.72);
    color: var(--ink-main);
    text-decoration: none;
    font-weight: 500;
    transition: transform 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.quick-link::after {
    content: "->";
    float: right;
    color: var(--primary-deep);
    font-size: 0.9rem;
}

.quick-link:hover {
    transform: translateX(4px);
    border-color: var(--line-strong);
    background: #fff;
}

.quick-note {
    margin: 1rem 0 0;
    padding-top: 1rem;
    border-top: 1px dashed var(--line);
    color: var(--ink-soft);
    font-size: 0.95rem;
    line-height: 1.65;
}

.catalog-panel {
    display: grid;
    gap: 1rem;
}

.panel-head {
    padding: 0.3rem 0.15rem 0.15rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-end;
    gap: 0.5rem 1rem;
}

.panel-head h2 {
    margin: 0;
    font-family: var(--font-heading);
    font-size: clamp(1.35rem, 2.2vw, 2rem);
}

.panel-hint {
    margin: 0;
    color: var(--ink-soft);
    font-size: 0.94rem;
}

.category-grid {
    display: grid;
    gap: 0.9rem;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.category-card {
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    background: var(--panel-solid);
    padding: 1rem;
    box-shadow: var(--shadow-md);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.category-card:hover {
    transform: translateY(-5px);
    border-color: var(--line-strong);
    box-shadow: 0 18px 34px rgba(16, 34, 26, 0.13);
}

.card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 0.8rem;
}

.card-head h3 {
    margin: 0;
    font-size: 1.1rem;
    font-family: var(--font-heading);
}

.card-pill {
    padding: 0.22rem 0.6rem;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--primary-deep);
    border: 1px solid rgba(14, 143, 112, 0.28);
    background: rgba(14, 143, 112, 0.08);
}

.article-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.46rem;
}

.article-item a {
    display: block;
    text-decoration: none;
    color: var(--ink-main);
    border-radius: 11px;
    padding: 0.48rem 0.64rem;
    line-height: 1.5;
    transition: background-color 0.2s ease, transform 0.2s ease, color 0.2s ease;
}

.article-item a::before {
    content: "- ";
    color: var(--accent);
}

.article-item a:hover {
    transform: translateX(4px);
    background: linear-gradient(90deg, rgba(14, 143, 112, 0.1), rgba(14, 143, 112, 0.04));
    color: var(--primary-deep);
}

.branch {
    border-radius: 12px;
    border: 1px dashed var(--line);
    background: rgba(255, 255, 255, 0.68);
    padding: 0.38rem 0.58rem;
}

.branch[open] {
    border-style: solid;
}

.branch summary {
    list-style: none;
    cursor: pointer;
    font-weight: 700;
    color: var(--ink-main);
    user-select: none;
}

.branch summary::-webkit-details-marker {
    display: none;
}

.branch summary::before {
    content: ">";
    margin-right: 0.36rem;
    color: var(--primary-deep);
    display: inline-block;
    transition: transform 0.2s ease;
}

.branch[open] summary::before {
    transform: rotate(90deg);
}

.nested-list {
    margin-top: 0.46rem;
}

.empty-state,
.root-files {
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--panel-solid);
    box-shadow: var(--shadow-md);
    padding: 1rem;
}

.empty-state p {
    margin: 0;
    color: var(--ink-soft);
    line-height: 1.65;
}

.empty-state code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background: rgba(14, 143, 112, 0.12);
    color: var(--primary-deep);
    padding: 0.12rem 0.4rem;
    border-radius: 6px;
}

.root-files h3 {
    margin: 0 0 0.65rem;
    font-family: var(--font-heading);
    font-size: 1.02rem;
}

@media (max-width: 1024px) {
    .content-layout {
        grid-template-columns: 1fr;
    }

    .quick-panel {
        position: static;
    }
}

@media (max-width: 720px) {
    .home-page {
        padding: 0.85rem;
    }

    .hero {
        padding: 1.2rem;
    }

    .hero-copy {
        line-height: 1.65;
    }

    .hero-actions {
        gap: 0.65rem;
    }

    .cta {
        width: 100%;
    }

    .panel-head {
        padding-left: 0;
        padding-right: 0;
    }

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

@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        animation: none;
    }

    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
    }
}