:root {
    color-scheme: light;
    --ink: #1d2523;
    --muted: #5d6a66;
    --paper: #f6f4ee;
    --panel: #fffdf7;
    --panel-soft: rgba(255, 253, 247, 0.78);
    --menu-panel: rgba(255, 253, 247, 0.96);
    --line: #d7d1c4;
    --accent: #0d6b57;
    --accent-dark: #074c3e;
    --warning: #a3421b;
    --body-gradient-a: rgba(13, 107, 87, 0.11);
    --body-gradient-b: #ece7db;
    --shadow: rgba(29, 37, 35, 0.12);
    --modal-shadow: rgba(29, 37, 35, 0.24);
    --overlay: rgba(29, 37, 35, 0.45);
    --notice-bg: rgba(13, 107, 87, 0.08);
    --notice-line: rgba(13, 107, 87, 0.28);
    --progress-bg: rgba(13, 107, 87, 0.12);
}

:root[data-theme="dark"] {
    color-scheme: dark;
    --ink: #edf4ee;
    --muted: #aab8b1;
    --paper: #111715;
    --panel: #18211e;
    --panel-soft: rgba(24, 33, 30, 0.84);
    --menu-panel: rgba(24, 33, 30, 0.98);
    --line: #33413c;
    --accent: #30c39b;
    --accent-dark: #82e6c6;
    --warning: #ff9b6d;
    --body-gradient-a: rgba(48, 195, 155, 0.12);
    --body-gradient-b: #0c1110;
    --shadow: rgba(0, 0, 0, 0.35);
    --modal-shadow: rgba(0, 0, 0, 0.5);
    --overlay: rgba(0, 0, 0, 0.62);
    --notice-bg: rgba(48, 195, 155, 0.1);
    --notice-line: rgba(48, 195, 155, 0.34);
    --progress-bg: rgba(48, 195, 155, 0.16);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    color: var(--ink);
    background:
        linear-gradient(135deg, var(--body-gradient-a), transparent 34%),
        linear-gradient(180deg, var(--paper), var(--body-gradient-b));
    font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", sans-serif;
    min-height: 100vh;
}

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

.site-header {
    align-items: center;
    border-bottom: 1px solid var(--line);
    display: flex;
    justify-content: space-between;
    padding: 18px clamp(18px, 4vw, 56px);
}

.brand {
    font-size: 24px;
    font-weight: 800;
}

.nav-toggle {
    display: none;
}

.nav-toggle-button {
    cursor: pointer;
    display: none;
    gap: 5px;
    padding: 8px;
}

.nav-toggle-button span {
    background: var(--ink);
    display: block;
    height: 2px;
    width: 24px;
}

.nav {
    align-items: center;
    display: flex;
    gap: 12px;
}

.nav form {
    margin: 0;
}

.nav button,
.nav a,
.nav summary {
    background: none;
    border: 0;
    color: var(--ink);
    cursor: pointer;
    font: inherit;
}

.nav-group {
    position: relative;
}

.nav-group summary {
    list-style: none;
    padding: 8px 2px;
}

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

.nav-group summary::after {
    color: var(--muted);
    content: "⌄";
    font-size: 13px;
    margin-left: 5px;
}

.nav-group[open] summary {
    color: var(--accent-dark);
    font-weight: 700;
}

.nav-menu {
    background: var(--menu-panel);
    border: 1px solid var(--line);
    box-shadow: 0 16px 44px var(--shadow);
    display: grid;
    gap: 2px;
    min-width: 150px;
    padding: 8px;
    position: absolute;
    right: 0;
    top: calc(100% + 10px);
    z-index: 30;
}

.nav-menu a {
    border: 0;
    color: var(--ink);
    padding: 10px 12px;
    white-space: nowrap;
}

.nav-menu a:hover {
    background: var(--notice-bg);
    color: var(--accent-dark);
}

.nav button[data-theme-toggle] {
    color: var(--accent-dark);
    font-weight: 700;
}

.nav-primary {
    border: 1px solid var(--ink);
    padding: 8px 14px;
}

.messages {
    margin: 18px auto 0;
    max-width: 980px;
    padding: 0 18px;
}

.message {
    background: var(--panel);
    border-left: 4px solid var(--accent);
    margin: 0 0 10px;
    padding: 12px 14px;
}

main {
    padding: clamp(24px, 5vw, 72px) clamp(18px, 4vw, 56px);
}

.site-footer {
    border-top: 1px solid var(--line);
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    padding: 24px clamp(18px, 4vw, 56px);
}

.site-footer a {
    color: var(--accent-dark);
}

.cookie-banner {
    align-items: center;
    background: var(--panel);
    border: 1px solid var(--line);
    bottom: 18px;
    box-shadow: 0 16px 50px var(--shadow);
    display: grid;
    gap: 16px;
    grid-template-columns: minmax(0, 1fr) auto;
    left: 18px;
    max-width: 760px;
    padding: 18px;
    position: fixed;
    z-index: 20;
}

.cookie-banner[hidden] {
    display: none;
}

.modal-backdrop {
    align-items: center;
    background: var(--overlay);
    display: grid;
    inset: 0;
    padding: 18px;
    position: fixed;
    z-index: 50;
}

.modal-backdrop[hidden] {
    display: none;
}

.modal-card {
    background: var(--panel);
    border: 1px solid var(--line);
    box-shadow: 0 24px 80px var(--modal-shadow);
    line-height: 1.75;
    margin: 0 auto;
    max-width: 680px;
    padding: clamp(22px, 4vw, 38px);
}

.modal-card h2 {
    font-size: clamp(28px, 5vw, 46px);
    margin: 8px 0 16px;
}

.modal-card p {
    color: var(--muted);
}

.modal-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 22px;
}

.cookie-banner p {
    color: var(--muted);
    line-height: 1.6;
    margin: 6px 0 0;
}

.cookie-actions {
    display: flex;
    gap: 10px;
}

.hero {
    align-items: center;
    display: grid;
    min-height: 44vh;
}

.hero h1,
.auth-panel h1,
.profile h1,
.page-heading h1,
.article-detail h1 {
    font-size: clamp(36px, 7vw, 82px);
    line-height: 1.02;
    margin: 8px 0 18px;
}

.eyebrow {
    color: var(--accent-dark);
    font-weight: 800;
    letter-spacing: 0;
    margin: 0;
}

.lead,
.auth-panel p,
.profile p,
.page-heading p {
    color: var(--muted);
    font-size: 18px;
    line-height: 1.8;
    max-width: 720px;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

.button {
    border: 1px solid var(--accent);
    cursor: pointer;
    display: inline-flex;
    font: inherit;
    font-weight: 700;
    justify-content: center;
    padding: 12px 18px;
}

.button.primary {
    background: var(--accent);
    color: white;
}

.button.secondary {
    background: transparent;
    color: var(--accent-dark);
}

.section-grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 36px;
}

.section-grid article,
.auth-panel,
.profile,
.article-card,
.empty-state,
.article-detail {
    background: var(--panel-soft);
    border: 1px solid var(--line);
    padding: clamp(22px, 4vw, 38px);
}

.section-grid span {
    color: var(--accent);
    font-weight: 900;
}

.section-grid h2 {
    margin: 12px 0;
}

.section-grid p {
    color: var(--muted);
    line-height: 1.7;
}

.auth-panel {
    margin: 0 auto;
    max-width: 560px;
}

.auth-panel.wide {
    max-width: 760px;
}

.form {
    display: grid;
    gap: 18px;
    margin-top: 28px;
}

.form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.form label {
    display: grid;
    gap: 8px;
}

.form input,
.form textarea,
.form select,
.search-form input {
    background: var(--panel);
    border: 1px solid var(--line);
    color: var(--ink);
    font: inherit;
    min-height: 46px;
    padding: 10px 12px;
}

.form textarea {
    line-height: 1.7;
    resize: vertical;
}

.form input[type="checkbox"] {
    min-height: auto;
    width: 18px;
}

.captcha-image {
    border: 1px solid var(--line);
    display: block;
    height: 48px;
    width: 150px;
}

.error,
.errorlist {
    color: var(--warning);
}

.profile {
    display: grid;
    gap: 28px;
    grid-template-columns: minmax(0, 1fr) minmax(260px, 380px);
}

.profile dl {
    display: grid;
    gap: 12px;
    margin: 0;
}

.profile dl div {
    border-bottom: 1px solid var(--line);
    padding-bottom: 12px;
}

.profile dt {
    color: var(--muted);
    font-size: 14px;
}

.profile dd {
    margin: 5px 0 0;
}

.avatar-preview {
    border: 1px solid var(--line);
    display: block;
    height: 112px;
    margin-bottom: 20px;
    object-fit: cover;
    width: 112px;
}

.content-band,
.page-heading {
    margin-top: 54px;
}

.section-title {
    margin-bottom: 20px;
}

.section-title h2 {
    font-size: clamp(28px, 4vw, 46px);
    margin: 8px 0 0;
}

.article-grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.article-card h2,
.article-card h3 {
    font-size: 24px;
    line-height: 1.25;
    margin: 10px 0;
}

.article-card p,
.article-body {
    color: var(--muted);
    line-height: 1.8;
}

.meta {
    color: var(--accent-dark);
    font-size: 14px;
    font-weight: 700;
    margin: 0;
}

.tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.tag-row span {
    border: 1px solid var(--line);
    color: var(--accent-dark);
    font-size: 13px;
    padding: 5px 8px;
}

.empty-state {
    align-items: flex-start;
    display: grid;
    gap: 16px;
}

.article-detail {
    margin: 0 auto;
    max-width: 880px;
}

.legal-page {
    background: var(--panel-soft);
    border: 1px solid var(--line);
    line-height: 1.8;
    margin: 0 auto;
    max-width: 920px;
    padding: clamp(24px, 5vw, 54px);
}

.legal-page h1 {
    font-size: clamp(36px, 8vw, 72px);
    line-height: 1.05;
    margin: 8px 0 24px;
}

.legal-page h2 {
    margin-top: 28px;
}

.legal-page p {
    color: var(--muted);
}

.notice-box {
    background: var(--notice-bg);
    border: 1px solid var(--notice-line);
    margin: 22px 0;
    padding: 18px;
}

.notice-box p {
    color: var(--ink);
}

.stats-grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 22px;
}

.stat-card {
    background: var(--panel-soft);
    border: 1px solid var(--line);
    padding: 22px;
}

.stat-card strong {
    display: block;
    font-size: clamp(28px, 5vw, 48px);
    line-height: 1;
    margin-top: 8px;
}

.progress-track {
    background: var(--progress-bg);
    border: 1px solid var(--line);
    height: 14px;
    margin: 16px 0;
    overflow: hidden;
}

.progress-track span {
    background: linear-gradient(90deg, var(--accent), #d4a638);
    display: block;
    height: 100%;
}

.level-badge {
    border: 1px solid var(--accent);
    color: var(--accent-dark);
    display: inline-flex;
    font-size: 12px;
    font-weight: 800;
    margin-left: 6px;
    padding: 2px 6px;
    vertical-align: middle;
}

.article-body {
    border-top: 1px solid var(--line);
    margin-top: 28px;
    padding-top: 24px;
}

.image-gallery {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 24px;
}

.image-gallery figure {
    margin: 0;
}

.image-gallery img,
.article-thumb {
    border: 1px solid var(--line);
    display: block;
    height: auto;
    width: 100%;
}

.article-thumb {
    aspect-ratio: 16 / 10;
    margin: 14px 0;
    object-fit: cover;
}

.inline-action {
    margin-top: 32px;
}

.engagement-bar {
    border-top: 1px solid var(--line);
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 28px;
    padding-top: 24px;
}

.engagement-bar form {
    margin: 0;
}

.comments {
    border-top: 1px solid var(--line);
    margin-top: 28px;
    padding-top: 24px;
}

.comments h2 {
    margin-top: 0;
}

.comment {
    border-top: 1px solid var(--line);
    padding: 18px 0;
}

.comment p {
    color: var(--muted);
    line-height: 1.7;
}

.comment-actions {
    align-items: center;
    display: flex;
    gap: 12px;
}

.comment-actions form {
    margin: 0;
}

.comment-actions button,
.comment-actions a {
    background: none;
    border: 0;
    color: var(--accent-dark);
    cursor: pointer;
    font: inherit;
    padding: 0;
}

.muted {
    color: var(--muted);
}

.search-layout {
    display: grid;
    gap: 24px;
    grid-template-columns: minmax(0, 1fr) 320px;
}

.security-grid {
    display: grid;
    gap: 24px;
    grid-template-columns: minmax(0, 1fr) 320px;
}

.search-form {
    display: grid;
    gap: 12px;
    grid-template-columns: minmax(0, 1fr) auto;
    margin-bottom: 20px;
}

.search-results {
    margin-top: 18px;
}

.side-panel {
    display: grid;
    gap: 18px;
}

.side-panel section {
    background: var(--panel-soft);
    border: 1px solid var(--line);
    padding: 22px;
}

.side-panel h2 {
    margin-top: 0;
}

.side-panel a {
    color: var(--accent-dark);
    display: block;
    line-height: 1.8;
}

.review-list,
.user-list {
    display: grid;
    gap: 14px;
}

.review-row,
.notification-row,
.user-row {
    align-items: center;
    background: var(--panel-soft);
    border: 1px solid var(--line);
    display: grid;
    gap: 18px;
    grid-template-columns: minmax(0, 1fr) auto;
    padding: 24px;
}

.review-row h2,
.notification-row h2,
.user-row h2 {
    margin: 8px 0;
}

.review-row p,
.notification-row p,
.user-row p {
    color: var(--muted);
    line-height: 1.7;
    margin-bottom: 0;
}

.notification-list {
    display: grid;
    gap: 14px;
    margin-top: 18px;
}

.notification-row.is-unread {
    border-color: var(--accent);
}

.pagination {
    align-items: center;
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-top: 28px;
}

.pagination span {
    color: var(--muted);
}

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

.review-actions form,
.moderation-panel form {
    margin: 0;
}

.moderation-panel {
    border-top: 1px solid var(--line);
    display: grid;
    gap: 20px;
    margin-top: 28px;
    padding-top: 24px;
}

.audit-list {
    border-top: 1px solid var(--line);
    margin-top: 28px;
    padding-top: 24px;
}

.audit-list p {
    color: var(--muted);
    line-height: 1.7;
}

@media (max-width: 760px) {
    .site-header {
        align-items: center;
        display: grid;
        grid-template-columns: 1fr auto;
        padding: 14px 18px;
    }

    .brand {
        font-size: 22px;
    }

    .nav-toggle-button {
        display: grid;
    }

    .nav {
        align-items: stretch;
        background: var(--menu-panel);
        border-top: 1px solid var(--line);
        display: none;
        gap: 0;
        grid-column: 1 / -1;
        margin-top: 14px;
        padding-top: 8px;
    }

    .nav-toggle:checked ~ .nav {
        display: grid;
    }

    .nav a,
    .nav button,
    .nav summary {
        border-bottom: 1px solid var(--line);
        min-height: 44px;
        padding: 12px 0;
        text-align: left;
        width: 100%;
    }

    .nav-group {
        display: grid;
    }

    .nav-group summary {
        display: block;
    }

    .nav-menu {
        background: transparent;
        border: 0;
        box-shadow: none;
        padding: 0 0 0 14px;
        position: static;
    }

    .nav-menu a {
        padding: 12px 0;
        white-space: normal;
    }

    .nav-primary {
        border-left: 0;
        border-right: 0;
        border-top: 0;
        padding-left: 0;
        padding-right: 0;
    }

    main {
        padding: 26px 16px;
    }

    .hero {
        min-height: auto;
    }

    .hero h1,
    .auth-panel h1,
    .profile h1,
    .page-heading h1,
    .article-detail h1 {
        font-size: clamp(36px, 14vw, 58px);
    }

    .button {
        min-height: 44px;
        width: 100%;
    }

    .engagement-bar {
        display: grid;
        grid-template-columns: 1fr;
    }

    .engagement-bar form {
        width: 100%;
    }

    .section-grid,
    .stats-grid,
    .profile,
    .article-grid,
    .image-gallery,
    .search-layout,
    .search-form,
    .security-grid,
    .review-row,
    .notification-row,
    .user-row {
        grid-template-columns: 1fr;
    }

    .review-actions {
        align-items: stretch;
        flex-direction: column;
    }

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

    .site-footer,
    .cookie-banner,
    .cookie-actions {
        align-items: stretch;
        grid-template-columns: 1fr;
    }

    .cookie-banner {
        bottom: 12px;
        left: 12px;
        right: 12px;
    }

    .cookie-actions,
    .modal-actions {
        display: grid;
    }
}