:root {
    color-scheme: light;
    --bg: #f4f1ec;
    --bg-alt: #ebe6de;
    --surface: #ffffff;
    --panel: #fdfbf7;
    --text: #1b1c1f;
    --muted: #5f646c;
    --accent: #8a1f28;
    --accent-2: #2ec4b6;
    --border: #e5e0d8;
    --shadow: 0 24px 60px rgba(20, 20, 20, 0.15);
    --radius: 18px;
    --container: 1100px;
}

[data-theme="dark"] {
    color-scheme: dark;
    --bg: #0f1215;
    --bg-alt: #15191f;
    --surface: #171b20;
    --panel: #1f252b;
    --text: #f3f4f6;
    --muted: #a3abb5;
    --accent: #b12a36;
    --accent-2: #3ad1c2;
    --border: #2b323a;
    --shadow: 0 26px 70px rgba(0, 0, 0, 0.45);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Space Grotesk", "Sora", "Noto Sans", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    position: relative;
    display: flex;
    flex-direction: column;
}

body::before,
body::after {
    content: "";
    position: fixed;
    width: 480px;
    height: 480px;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
    z-index: -1;
}

body::before {
    background: radial-gradient(circle, rgba(138, 31, 40, 0.4), transparent 70%);
    top: -120px;
    left: -140px;
}

body::after {
    background: radial-gradient(circle, rgba(46, 196, 182, 0.4), transparent 70%);
    bottom: -160px;
    right: -120px;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

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

.main {
    padding-top: 96px;
    flex: 1 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}

[data-theme="dark"] .site-header {
    background: rgba(15, 18, 21, 0.7);
}

.nav-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 0;
}

.logo {
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.nav {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-link {
    font-size: 0.95rem;
    padding: 6px 12px;
    border-radius: 999px;
    color: var(--muted);
    transition: all 0.25s ease;
}

.nav-link:hover,
.nav-link.is-active {
    color: var(--text);
    background: var(--surface);
    box-shadow: var(--shadow);
}

.nav-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

.chip {
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 6px 12px;
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    font-weight: 500;
    transition: all 0.25s ease;
}

.chip:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.chip.icon {
    min-width: 40px;
    height: 40px;
    padding: 0 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    position: relative;
    overflow: hidden;
}

.chip.icon.dual {
    padding: 0 12px;
}

.chip-icon {
    width: 18px;
    height: 18px;
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.chip.icon:hover .chip-icon {
    transform: rotate(-8deg) scale(1.05);
}

.chip.is-animating .chip-icon {
    animation: toggle-pop 0.45s ease;
}

.theme-toggle .chip-icon.sun,
.theme-toggle .chip-icon.moon {
    opacity: 0.5;
    transform: scale(0.85);
}

[data-theme="light"] .theme-toggle .chip-icon.sun,
[data-theme="dark"] .theme-toggle .chip-icon.moon {
    opacity: 1;
    transform: scale(1);
    color: var(--accent);
}

.lang-toggle .lang-tag {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    opacity: 0.4;
    transform: scale(0.9);
    width: auto;
    height: auto;
}

.lang-toggle[data-lang="en"] .lang-en,
.lang-toggle[data-lang="zh"] .lang-zh {
    opacity: 1;
    transform: scale(1);
    color: var(--accent);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    border: 0;
    background: transparent;
    cursor: pointer;
}

.nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--text);
}

.hero {
    padding: 70px 0 80px;
}

.hero-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px;
    align-items: center;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.3em;
    font-size: 0.75rem;
    color: var(--accent);
    font-weight: 600;
}

.hero h1 {
    font-size: clamp(2.6rem, 5vw, 3.8rem);
    line-height: 1.05;
    margin: 12px 0 16px;
}

.hero-sub {
    font-size: 1.1rem;
    color: var(--muted);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 24px;
}

.button {
    padding: 12px 22px;
    border-radius: 999px;
    border: none;
    background: var(--accent);
    color: #fff;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

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

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

.hero-card {
    position: relative;
    border-radius: var(--radius);
    background: linear-gradient(140deg, rgba(46, 196, 182, 0.2), rgba(138, 31, 40, 0.2));
    padding: 28px;
    overflow: hidden;
    box-shadow: var(--shadow);
    animation: float 6s ease-in-out infinite;
}

.hero-card-inner {
    position: relative;
    z-index: 1;
    background: var(--surface);
    border-radius: calc(var(--radius) - 6px);
    padding: 24px;
}

.hero-card h3 {
    margin-top: 0;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.hero-tags span {
    padding: 4px 10px;
    border-radius: 999px;
    border: 1px solid var(--border);
    font-size: 0.8rem;
}

.glow {
    position: absolute;
    inset: -40% 0 0 -40%;
    background: radial-gradient(circle, rgba(138, 31, 40, 0.35), transparent 70%);
}

.section {
    padding: 70px 0;
}

.section-head {
    margin-bottom: 32px;
}

.section-head p {
    color: var(--muted);
}

.split {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px;
    align-items: center;
}

.panel {
    background: var(--panel);
    padding: 24px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

.feature-card {
    padding: 24px;
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: transform 0.25s ease;
}

.feature-card:hover {
    transform: translateY(-6px);
}

.callout {
    background: var(--surface);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.callout-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.site-footer {
    padding: 40px 0 24px;
    border-top: 1px solid var(--border);
    background: var(--bg-alt);
}

.footer-meta {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 0;
    font-size: 0.85rem;
    color: var(--muted);
}

.login-section {
    padding: 70px 0 90px;
}

.login-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 36px;
    align-items: center;
}

.login-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow);
    display: grid;
    gap: 14px;
}

.login-card label {
    font-weight: 600;
}

.login-card input {
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--panel);
    color: var(--text);
}

.turnstile-wrap {
    margin: 6px 0;
}

.login-note {
    margin-top: 16px;
    padding: 12px 16px;
    border-left: 3px solid var(--accent-2);
    background: rgba(46, 196, 182, 0.08);
    border-radius: 12px;
}

.alert {
    padding: 10px 12px;
    border-radius: 12px;
    font-weight: 500;
}

.alert.error {
    background: rgba(138, 31, 40, 0.15);
    color: var(--text);
}

.alert.success {
    background: rgba(46, 196, 182, 0.15);
    color: var(--text);
}

.login-help {
    color: var(--muted);
    font-size: 0.9rem;
}

.dashboard-hero {
    padding: 70px 0 90px;
}

.dashboard-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow);
    display: grid;
    gap: 20px;
}

.dashboard-tabs {
    margin-top: -50px;
    margin-bottom: 30px;
}

.tab-list {
    display: inline-flex;
    gap: 10px;
    padding: 8px;
    border-radius: 999px;
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.tab {
    border: 0;
    background: transparent;
    color: var(--muted);
    padding: 8px 18px;
    border-radius: 999px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.tab.is-active {
    background: var(--accent);
    color: #fff;
}

.dashboard-pane {
    display: none;
    padding-bottom: 40px;
    animation: fade-slide 0.35s ease;
}

.dashboard-pane.is-active {
    display: block;
}

.product-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

.product-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: flex-start;
}

.product-filename {
    font-size: 0.85rem;
    color: var(--muted);
}

.admin-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 24px;
    align-items: start;
}

.admin-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    display: grid;
    gap: 16px;
}

.admin-card h3 {
    margin: 0;
}

.admin-password {
    display: grid;
    gap: 12px;
    border-top: 1px solid var(--border);
    padding-top: 16px;
}

.admin-password h4 {
    margin: 0;
}

.admin-form {
    display: grid;
    gap: 12px;
}

.admin-form label {
    font-weight: 600;
}

.admin-form input {
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--panel);
    color: var(--text);
}

.admin-result-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.admin-result-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.admin-result-grid span {
    font-size: 0.75rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

.admin-result-grid strong {
    display: block;
    font-size: 0.95rem;
    word-break: break-word;
}

.admin-field-wide {
    grid-column: 1 / -1;
}

.mono {
    font-family: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    font-size: 0.85rem;
}

.admin-actions {
    margin-top: 4px;
}

.dashboard-changelog {
    margin-top: 28px;
}

.dashboard-changelog .section-head {
    margin-bottom: 16px;
}

.changelog-grid {
    display: grid;
    gap: 18px;
}

.changelog-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-left: 4px solid var(--accent);
    border-radius: var(--radius);
    padding: 18px 20px;
    box-shadow: var(--shadow);
}

.changelog-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 12px;
}

.changelog-date {
    font-size: 0.7rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--muted);
}

.changelog-title {
    margin: 0;
    font-size: 1.05rem;
}

.changelog-items {
    margin: 12px 0 0;
    padding-left: 18px;
    color: var(--muted);
}

.changelog-items li {
    margin-bottom: 6px;
}

.user-meta {
    display: flex;
    align-items: center;
    gap: 14px;
}

.user-meta h3 {
    margin: 0;
    line-height: 1.1;
}

.avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #fff;
    display: grid;
    place-items: center;
    font-weight: 700;
}

.user-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 4px;
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 999px;
    border: 1px solid var(--border);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    background: var(--panel);
}

.tag.role {
    border-color: rgba(46, 196, 182, 0.5);
}

.tag.status {
    border-color: rgba(138, 31, 40, 0.5);
}

.meta-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.meta-grid.single {
    grid-template-columns: minmax(0, 1fr);
}

.meta-grid span {
    font-size: 0.8rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.16em;
}

.meta-grid strong {
    font-size: 1rem;
}

.action-row {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

.action-row form {
    margin: 0;
}

.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

@keyframes float {
    0%,
    100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes toggle-pop {
    0% {
        transform: scale(1) rotate(0deg);
    }
    40% {
        transform: scale(0.85) rotate(-12deg);
    }
    100% {
        transform: scale(1) rotate(0deg);
    }
}

@keyframes fade-slide {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

    .callout-inner,
    .footer-meta {
        flex-direction: column;
        align-items: flex-start;
    }

    .nav {
        position: absolute;
        right: 4%;
        top: 68px;
        background: var(--surface);
        border-radius: var(--radius);
        padding: 16px;
        flex-direction: column;
        box-shadow: var(--shadow);
        opacity: 0;
        pointer-events: none;
        transform: translateY(-12px);
        transition: all 0.2s ease;
    }

    body.nav-open .nav {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0);
    }

    .nav-toggle {
        display: flex;
    }

    .tab-list {
        width: 100%;
        justify-content: space-between;
    }

    .product-card {
        align-items: flex-start;
    }

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

    .action-row {
        flex-direction: column;
        align-items: stretch;
    }

    .action-row .button {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .hero-card {
        animation: none;
    }
}