:root {
    --bg-0: #f6f7f9;
    --bg-1: #ffffff;
    --surface: #ffffff;
    --panel: #f9fafb;
    --border: #e5e7eb;
    --text: #1f2937;
    --muted: #6b7280;
    --primary-700: #1d4ed8;
    --primary-600: #2563eb;
    --primary-500: #3b82f6;
    --primary-400: #60a5fa;
    --primary: var(--primary-500);
    --primary-rgb: 59,130,246;
    --card-radius: 18px;
    --gap: 14px;
    --shadow: 0 8px 20px rgba(0, 0, 0, .08)
}

* {
    box-sizing: border-box
}

html,
body {
    height: 100%
}

body {
    margin: 0;
    color: var(--text);
    font: 16px -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    background-image: linear-gradient(to left, rgba(255, 0, 149, 0.2), rgba(0, 247, 255, 0.2));
}

.page-header {
    padding: 22px 0 8px;
    display: flex;
    justify-content: center
}

.container {
    width: 100%;
    max-width: 960px;
    margin: 0 auto;
    padding: 0 16px
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    border-radius: 20px;
    padding: 12px 16px;
    box-shadow: var(--shadow);
    width: 100%;
    background-image: linear-gradient(135deg, var(--surface), var(--panel));
}

.brand-mark {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px
}

.brand-text h1 {
    font-size: 20px;
    margin: 0
}

.brand-text p {
    margin: 2px 0 0;
    color: var(--muted);
    font-size: 14px
}

.page-main {
    padding: 10px 0 24px
}

.about-card {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 14px;
    padding: 18px;
    border-radius: 20px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    background-image: linear-gradient(135deg, var(--surface), var(--panel));
}

.about-title {
    font-size: 18px;
    margin: 0 0 4px;
    font-weight: 700
}

.about-desc {
    color: var(--muted);
    line-height: 1.6;
    margin: 0
}

.about-list {
    margin: 0;
    padding-left: 18px;
    color: #374151
}

.about-list li {
    margin: 6px 0
}

.shortcut-grid {
    display: grid;
    gap: var(--gap);
    grid-template-columns: repeat(2, 1fr);
}

.shortcut-card {
    background-image: linear-gradient(135deg, var(--surface), var(--panel));
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-radius: var(--card-radius);
    padding: 16px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    min-height: 120px;
    overflow: hidden
}

.shortcut-card .left {
    display: flex;
    align-items: center;
    gap: 12px
}

.shortcut-card .icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(var(--primary-rgb), .10);
    display: grid;
    place-items: center
}

.shortcut-card .icon svg {
    width: 28px;
    height: 28px
}

.shortcut-card .title {
    font-weight: 600
}

.shortcut-card .desc {
    color: var(--muted);
    font-size: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden
}

.shortcut-card .btn {
    align-self: center
}

.btn {
    appearance: none;
    border: 0;
    border-radius: 999px;
    padding: 10px 16px;
    font-weight: 600;
    cursor: pointer;
    background: linear-gradient(90deg, var(--primary-600), var(--primary-500));
    color: white
}
.btn:hover {background: linear-gradient(90deg, var(--primary-700), var(--primary-600))}
.btn:disabled {opacity: .6; cursor: not-allowed}
.btn:focus-visible {outline: 2px solid var(--primary-500); outline-offset: 2px}

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

.version-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px
}

.version-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    background: var(--surface);
}

.version-item .meta {
    display: flex;
    flex-direction: column;
    gap: 4px
}

.version-item .meta .name {
    font-weight: 600
}

.version-item .meta .info {
    color: var(--muted);
    font-size: 13px
}

.modal {
    position: fixed;
    inset: 0;
    display: none
}

.modal.show {
    display: block
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, .35)
}

.modal-content {
    position: relative;
    margin: 8vh auto;
    background: var(--panel);
    border-radius: 16px;
    max-width: 720px;
    padding: 16px;
    box-shadow: var(--shadow)
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px
}

.page-footer {
    padding: 20px;
    color: #6b7280;
    text-align: center
}

.skeleton {
    background: linear-gradient(90deg, #e5e7eb 25%, #f3f4f6 37%, #e5e7eb 63%);
    background-size: 400% 100%;
    animation: s 1.4s ease infinite
}

@keyframes s {
    0% {
        background-position: 100% 0
    }

    100% {
        background-position: -100% 0
    }
}

@media (max-width:720px) {
    .shortcut-grid {
        grid-template-columns: 1fr
    }

    .shortcut-card {
        min-height: 110px
    }
}

@media (prefers-color-scheme: dark) {
    :root {--bg-0:#0e0f10;--bg-1:#111213;--surface:#1c1d20;--panel:#202226;--border:#2a2c31;--text:#e5e7eb;--muted:#a3a3a3}
    body {color: var(--text); background-image: linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 100%)}
    .brand {background-image: linear-gradient(135deg, var(--surface), var(--panel))}
    .shortcut-card {background-image: linear-gradient(135deg, var(--surface), var(--panel)); border-color: var(--border)}
    .version-item {background: var(--surface)}
    .modal-content {background: var(--panel)}
}