:root {
    --retro-page: #f1f2ee;
    --retro-paper: #ffffff;
    --retro-green: #008f43;
    --retro-green-dark: #007335;
    --retro-red: #ff3030;
    --retro-blue: #009fe3;
    --retro-line: #aeb5af;
    --retro-soft-line: #d9ddd8;
    --retro-muted: #747a77;
    --retro-ink: #46504a;
    --retro-button: #18cf00;
    --retro-ui: Tahoma, Verdana, Arial, "Microsoft YaHei", sans-serif;
    --retro-content: SimSun, "宋体", "Microsoft YaHei", serif;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    min-width: 320px;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--retro-ink);
    background:
        radial-gradient(circle at 12px 12px, rgba(115, 125, 116, 0.08) 0 1px, transparent 1.5px) 0 0 / 24px 24px,
        var(--retro-page);
    font-family: var(--retro-content);
    font-size: 15px;
    line-height: 1.75;
}

button,
input,
textarea {
    font: inherit;
}

a {
    color: var(--retro-green);
    text-decoration: none;
}

a:hover {
    color: var(--retro-red);
}

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

.skip-link {
    position: fixed;
    z-index: 100;
    top: 10px;
    left: 10px;
    padding: 7px 12px;
    color: #fff;
    background: var(--retro-green-dark);
    transform: translateY(-150%);
}

.skip-link:focus {
    transform: translateY(0);
}

.back2004-icon {
    display: inline-flex;
    width: 1.25em;
    height: 1.25em;
    flex: 0 0 auto;
    vertical-align: -0.22em;
}

.back2004-icon svg {
    width: 100%;
    height: 100%;
}

.back2004-frame {
    display: flex;
    width: min(1360px, calc(100% - 28px));
    min-height: calc(100vh - 30px);
    margin: 14px auto;
    overflow: hidden;
    flex-direction: column;
    border: 1px dashed var(--retro-line);
    background: var(--retro-paper);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.8) inset;
}

.back2004-header {
    position: relative;
}

.back2004-banner {
    position: relative;
    display: block;
    height: clamp(112px, 12vw, 160px);
    overflow: hidden;
    border-bottom: 1px solid #a6aaa4;
    color: #fff;
    background: #eaf6d7 url("../img/header-botanical.jpg") center 57% / cover no-repeat;
}

.back2004-banner::before {
    position: absolute;
    inset: 0;
    content: "";
    background:
        linear-gradient(110deg, transparent 0 44%, rgba(255, 255, 255, 0.24) 44.2% 62%, transparent 62.2%),
        linear-gradient(to right, transparent 0 68%, rgba(255, 255, 255, 0.24) 68% 100%);
    pointer-events: none;
}

.back2004-banner::after {
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    height: 4px;
    content: "";
    background: linear-gradient(90deg, #ff4381 0 12.5%, #1fb5ff 12.5% 25%, #b9d700 25% 37.5%, #ffc11b 37.5% 50%, #ff572d 50% 62.5%, #b759dc 62.5% 75%, #18a62d 75% 87.5%, #00b878 87.5% 100%);
}

.back2004-brand,
.back2004-domain {
    position: absolute;
    z-index: 1;
    right: 18px;
    color: rgba(255, 255, 255, 0.96);
    font-family: var(--retro-ui);
    text-shadow: 0 1px 4px rgba(85, 118, 71, 0.52);
}

.back2004-brand {
    bottom: 15px;
    font-size: clamp(22px, 2.7vw, 34px);
    font-weight: 700;
    letter-spacing: -1px;
}

.back2004-domain {
    right: 20px;
    bottom: 5px;
    font-size: 10px;
}

.back2004-menu-toggle {
    display: none;
}

.back2004-nav {
    display: grid;
    min-height: 68px;
    grid-template-columns: repeat(8, minmax(0, 1fr));
    border-bottom: 1px dashed var(--retro-line);
}

.back2004-nav-item {
    position: relative;
    display: flex;
    min-width: 0;
    padding: 8px 4px 10px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    color: #555d58;
    border-right: 1px solid #c2c6c1;
    font-family: var(--retro-ui);
    line-height: 1.08;
    text-align: center;
    transition: color 130ms ease, background-color 130ms ease;
}

.back2004-nav-item:last-child {
    border-right: 0;
}

.back2004-nav-item::before {
    position: absolute;
    top: -1px;
    right: 0;
    left: 0;
    height: 3px;
    content: "";
    background: #ff4381;
}

.back2004-nav-item:nth-child(2)::before { background: #1fb5ff; }
.back2004-nav-item:nth-child(3)::before { background: #b9d700; }
.back2004-nav-item:nth-child(4)::before { background: #ffc11b; }
.back2004-nav-item:nth-child(5)::before { background: #ff572d; }
.back2004-nav-item:nth-child(6)::before { background: #b759dc; }
.back2004-nav-item:nth-child(7)::before { background: #18a62d; }
.back2004-nav-item:nth-child(8)::before { background: #00b878; }

.back2004-nav-item span {
    overflow: hidden;
    max-width: 100%;
    color: #686e6a;
    font-size: 12px;
    font-style: italic;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.back2004-nav-item strong {
    margin-top: 3px;
    font-size: clamp(13px, 1.25vw, 17px);
    font-weight: 400;
    white-space: nowrap;
}

.back2004-nav-item:hover,
.back2004-nav-item:focus-visible,
.back2004-nav-item.is-current {
    color: var(--retro-green);
    background: linear-gradient(to bottom, rgba(225, 248, 205, 0.7), transparent);
    outline: 0;
}

.back2004-main {
    display: flex;
    min-height: 520px;
    flex: 1;
    flex-direction: column;
}

.back2004-stage {
    display: grid;
    padding: 30px 30px 24px 18px;
    flex: 1;
    grid-template-columns: 82px minmax(0, 1fr);
    gap: 16px;
}

.news-rail {
    position: relative;
    min-height: 520px;
    overflow: hidden;
    color: var(--retro-blue);
}

.news-rail span {
    position: absolute;
    top: 12px;
    left: 8px;
    font-family: Arial Black, Impact, var(--retro-ui);
    font-size: 42px;
    font-style: italic;
    font-weight: 900;
    letter-spacing: -2px;
    line-height: 1;
    text-shadow: -7px 5px 0 rgba(0, 159, 227, 0.12), -13px 9px 0 rgba(0, 159, 227, 0.07);
    transform: rotate(90deg) translateY(-100%);
    transform-origin: top left;
}

.news-rail i {
    position: absolute;
    top: 188px;
    left: 33px;
    width: 46px;
    height: 92px;
    border-top: 1px dashed var(--retro-line);
    border-left: 1px dashed var(--retro-line);
    transform: skewY(-42deg);
}

.back2004-panels {
    display: grid;
    min-width: 0;
    align-items: stretch;
    grid-template-columns: minmax(420px, 1.04fr) minmax(360px, 0.96fr);
    gap: 18px;
}

.retro-panel {
    position: relative;
    min-width: 0;
    border: 1px dashed var(--retro-line);
    border-radius: 28px;
    background: #fff;
}

.news-list-panel,
.news-preview-panel {
    min-height: 520px;
}

.news-list-panel {
    display: flex;
    padding: 22px 20px 58px;
    flex-direction: column;
}

.news-list {
    display: grid;
    align-content: start;
}

.news-row {
    display: grid;
    min-height: 48px;
    padding: 5px 2px;
    align-items: center;
    color: var(--retro-green);
    border-bottom: 1px dotted rgba(174, 181, 175, 0.42);
    grid-template-columns: 40px 28px minmax(0, 1fr);
    gap: 6px;
    font-size: 14px;
    line-height: 1.35;
    transition: color 120ms ease, transform 120ms ease;
}

.news-row:last-child {
    border-bottom-color: transparent;
}

.news-row:hover,
.news-row:focus-visible,
.news-row.is-selected {
    color: var(--retro-red);
    outline: 0;
    transform: translateX(3px);
}

.news-sequence {
    color: #858a87;
    font-family: Georgia, "Times New Roman", serif;
    font-size: 13px;
}

.news-row .back2004-icon {
    width: 23px;
    height: 18px;
    color: #8f9791;
}

.news-row-copy {
    display: block;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.news-row time,
.news-row strong {
    font-weight: 400;
}

.news-row time {
    margin-right: 3px;
}

.retro-empty {
    padding: 80px 20px;
    color: var(--retro-green);
    text-align: center;
}

.retro-pagination {
    position: absolute;
    right: 18px;
    bottom: -18px;
    left: 18px;
    min-height: 42px;
}

.page-navigator,
.retro-pagination ol {
    display: flex;
    margin: 0;
    padding: 0;
    align-items: center;
    justify-content: flex-start;
    gap: 10px;
    list-style: none;
}

.page-navigator li a,
.page-navigator li span {
    display: grid;
    width: 36px;
    height: 36px;
    place-items: center;
    color: #063f00;
    border: 1px solid #22631a;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 28%, #8dff72 0 13%, var(--retro-button) 38%, #089500 72%, #064c00 100%);
    box-shadow: 0 2px 3px rgba(0, 0, 0, 0.36), inset 0 0 0 2px rgba(255, 255, 255, 0.45);
    font-family: var(--retro-ui);
    font-size: 11px;
}

.page-navigator li.current a,
.page-navigator li.current span {
    color: var(--retro-green-dark);
    border-color: transparent;
    background: transparent;
    box-shadow: none;
}

.page-navigator .back2004-icon {
    width: 21px;
    height: 21px;
}

.news-preview-panel {
    padding: 30px 28px 70px;
    color: var(--retro-green);
}

.news-preview-panel h1,
.retro-article-header h1 {
    margin: 0 0 24px;
    color: var(--retro-green);
    font-family: var(--retro-content);
    font-size: 17px;
    font-weight: 700;
    line-height: 1.55;
}

.news-preview-panel h1 a {
    color: inherit;
}

.news-preview-copy {
    min-height: 250px;
    white-space: pre-line;
    font-size: 16px;
    line-height: 1.9;
}

.news-preview-copy::first-letter {
    font-size: 1.18em;
}

.read-entry {
    display: inline-flex;
    margin-top: 22px;
    align-items: center;
    color: var(--retro-green);
    gap: 5px;
    font-family: var(--retro-ui);
    font-size: 12px;
    font-weight: 700;
}

.read-entry .back2004-icon {
    width: 16px;
    height: 16px;
}

.preview-scroll-controls {
    position: absolute;
    right: 18px;
    bottom: -18px;
    display: flex;
    gap: 10px;
}

.round-control {
    display: grid;
    width: 36px;
    height: 36px;
    padding: 0;
    cursor: pointer;
    place-items: center;
    color: #063f00;
    border: 1px solid #22631a;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 28%, #8dff72 0 13%, var(--retro-button) 38%, #089500 72%, #064c00 100%);
    box-shadow: 0 2px 3px rgba(0, 0, 0, 0.36), inset 0 0 0 2px rgba(255, 255, 255, 0.45);
}

.round-control:hover,
.round-control:focus-visible {
    filter: brightness(1.12);
    outline: 2px solid rgba(0, 159, 227, 0.4);
    outline-offset: 2px;
}

.round-control .back2004-icon {
    width: 22px;
    height: 22px;
}

.archive-summary,
.error-message {
    min-height: 520px;
    padding: 48px 36px;
    color: var(--retro-green);
}

.archive-kicker,
.article-index-code {
    margin: 0 0 8px;
    color: var(--retro-blue);
    font-family: var(--retro-ui);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.12em;
}

.archive-summary h1,
.error-message h1 {
    margin: 0 0 20px;
    font-size: 24px;
    font-weight: 400;
}

.article-panels {
    grid-template-columns: minmax(250px, 0.72fr) minmax(520px, 1.28fr);
}

.article-index-panel {
    min-height: 620px;
    padding: 34px 24px 64px;
    color: var(--retro-green);
}

.article-index-panel > time {
    font-size: 12px;
}

.article-index-panel h2 {
    margin: 12px 0 28px;
    font-size: 19px;
    font-weight: 400;
    line-height: 1.55;
}

.article-index-panel p {
    font-size: 13px;
}

.article-meta-list {
    margin: 0 0 30px;
    font-size: 12px;
}

.article-meta-list div {
    display: grid;
    padding: 8px 0;
    border-bottom: 1px dotted var(--retro-soft-line);
    grid-template-columns: 56px minmax(0, 1fr);
}

.article-meta-list dt {
    color: var(--retro-muted);
}

.article-meta-list dd {
    margin: 0;
}

.article-near {
    display: grid;
    margin: 20px 0;
    gap: 18px;
    font-size: 12px;
}

.article-near span {
    display: flex;
    margin-bottom: 4px;
    align-items: center;
    color: var(--retro-muted);
    gap: 4px;
    font-family: var(--retro-ui);
}

.article-near .back2004-icon {
    width: 14px;
    height: 14px;
}

.article-content-panel {
    min-height: 620px;
    padding: 38px 38px 76px;
    color: #165d3a;
}

.retro-article-header {
    padding-bottom: 14px;
    border-bottom: 1px dotted var(--retro-soft-line);
}

.retro-article-header h1 {
    margin: 0;
    font-size: 20px;
}

.retro-article-header h1 span {
    font-size: 14px;
}

.retro-article-body {
    overflow-wrap: anywhere;
    padding-top: 16px;
    font-size: 15px;
    line-height: 1.95;
}

.retro-article-body h1,
.retro-article-body h2,
.retro-article-body h3,
.retro-article-body h4 {
    color: var(--retro-green-dark);
    line-height: 1.5;
}

.retro-article-body h1 { font-size: 24px; }
.retro-article-body h2 { font-size: 21px; }
.retro-article-body h3 { font-size: 18px; }
.retro-article-body h4 { font-size: 16px; }

.retro-article-body img {
    height: auto;
    margin: 20px auto;
    border: 1px dashed var(--retro-line);
    padding: 4px;
}

.retro-article-body blockquote {
    margin: 18px 0;
    padding: 8px 18px;
    color: #47735d;
    border-left: 3px solid #8bd548;
    background: #f6fced;
}

.retro-article-body pre,
.retro-article-body code {
    font-family: Consolas, "Cascadia Mono", monospace;
}

.retro-article-body code {
    padding: 0.12em 0.35em;
    color: #9d2132;
    background: #f2f5ef;
}

.retro-article-body pre {
    max-width: 100%;
    overflow: auto;
    padding: 14px 16px;
    color: #e9ffe8;
    border: 1px dashed #7d9d79;
    background: #203529;
    line-height: 1.55;
}

.retro-article-body pre code {
    padding: 0;
    color: inherit;
    background: transparent;
}

.retro-article-body table {
    display: block;
    width: max-content;
    max-width: 100%;
    overflow-x: auto;
    border-collapse: collapse;
}

.retro-article-body th,
.retro-article-body td {
    padding: 7px 10px;
    border: 1px dashed var(--retro-line);
}

.retro-article-body th {
    background: #f0f9e6;
}

.retro-article-tags {
    margin-top: 30px;
    padding-top: 12px;
    border-top: 1px dotted var(--retro-soft-line);
    font-size: 12px;
}

.retro-article-tags > span {
    margin-right: 8px;
    color: var(--retro-blue);
    font-family: var(--retro-ui);
    font-weight: 700;
}

.retro-comments {
    margin-top: 36px;
    padding-top: 18px;
    border-top: 1px dashed var(--retro-line);
}

.retro-comments > h2,
.retro-respond > h2 {
    color: var(--retro-green);
    font-size: 17px;
    font-weight: 400;
}

.retro-comments ol,
.retro-comments ul {
    padding-left: 24px;
}

.retro-comments .comment-list {
    padding: 0;
    list-style: none;
}

.retro-comments .comment-body {
    margin: 14px 0;
    padding: 12px 14px;
    border: 1px dotted var(--retro-soft-line);
    background: #fbfefa;
}

.retro-comments .comment-author .avatar {
    width: 32px;
    height: 32px;
    margin-right: 8px;
    float: left;
    border-radius: 50%;
}

.retro-comments .comment-meta {
    color: var(--retro-muted);
    font-size: 11px;
}

.retro-comment-form,
.retro-comment-fields {
    display: grid;
    gap: 12px;
}

.retro-comment-fields {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.retro-comment-form label {
    display: grid;
    color: var(--retro-green-dark);
    gap: 4px;
    font-size: 12px;
}

.retro-comment-form input,
.retro-comment-form textarea {
    width: 100%;
    padding: 8px 10px;
    color: var(--retro-ink);
    border: 1px dashed var(--retro-line);
    border-radius: 0;
    background: #fff;
    outline: 0;
}

.retro-comment-form input:focus,
.retro-comment-form textarea:focus {
    border-color: var(--retro-green);
    box-shadow: 0 0 0 2px rgba(24, 207, 0, 0.12);
}

.retro-comment-form button {
    justify-self: start;
    display: inline-flex;
    padding: 7px 13px;
    cursor: pointer;
    align-items: center;
    color: #fff;
    border: 1px solid var(--retro-green-dark);
    background: var(--retro-green);
    gap: 4px;
    font-family: var(--retro-ui);
    font-size: 12px;
}

.retro-comment-form button .back2004-icon {
    width: 14px;
    height: 14px;
}

.error-panels {
    grid-template-columns: minmax(260px, 0.8fr) minmax(420px, 1.2fr);
}

.error-code {
    display: flex;
    min-height: 520px;
    padding: 50px 36px;
    align-items: flex-start;
    color: var(--retro-red);
    gap: 14px;
}

.error-code strong {
    color: var(--retro-muted);
}

.error-code .back2004-icon {
    color: #89918b;
}

.back2004-footer {
    display: grid;
    padding: 8px 18px 10px;
    align-items: center;
    color: #80a5bb;
    border-top: 1px dashed var(--retro-soft-line);
    grid-template-columns: 1fr auto 1fr;
    gap: 12px;
    font-family: var(--retro-ui);
    font-size: 10px;
    text-align: center;
}

.back2004-footer p {
    margin: 0;
}

.footer-ornament {
    overflow: hidden;
    color: #8e9690;
    font-family: Georgia, serif;
    font-size: 20px;
    letter-spacing: 3px;
    white-space: nowrap;
}

.footer-ornament:last-child {
    text-align: right;
}

@media (max-width: 980px) {
    .back2004-frame {
        width: calc(100% - 18px);
        margin: 9px auto;
    }

    .back2004-nav-item strong {
        font-size: 12px;
    }

    .back2004-stage {
        padding-right: 18px;
        grid-template-columns: 58px minmax(0, 1fr);
        gap: 10px;
    }

    .news-rail span {
        font-size: 29px;
    }

    .back2004-panels,
    .article-panels {
        grid-template-columns: minmax(0, 1fr);
    }

    .news-list-panel,
    .news-preview-panel,
    .archive-summary,
    .article-index-panel,
    .article-content-panel,
    .error-code,
    .error-message {
        min-height: auto;
    }

    .article-index-panel {
        display: grid;
        grid-template-columns: minmax(0, 1fr) minmax(220px, 0.8fr);
        column-gap: 26px;
    }

    .article-index-panel .article-index-code,
    .article-index-panel > time,
    .article-index-panel > h2 {
        grid-column: 1;
    }

    .article-index-panel .article-meta-list,
    .article-index-panel > p {
        grid-column: 1;
    }

    .article-index-panel .article-near {
        grid-column: 2;
        grid-row: 1 / span 4;
    }

    .article-index-panel > .read-entry {
        grid-column: 2;
    }
}

@media (max-width: 720px) {
    body {
        background: #fff;
        font-size: 14px;
    }

    .back2004-frame {
        width: 100%;
        min-height: 100vh;
        margin: 0;
        border-width: 0;
    }

    .back2004-banner {
        height: 102px;
        background-position: 37% center;
    }

    .back2004-brand {
        right: 12px;
        bottom: 13px;
        font-size: 24px;
    }

    .back2004-domain {
        right: 13px;
    }

    .back2004-menu-toggle {
        display: flex;
        width: 100%;
        min-height: 44px;
        padding: 0 14px;
        cursor: pointer;
        align-items: center;
        justify-content: center;
        color: var(--retro-green-dark);
        border: 0;
        border-bottom: 1px dashed var(--retro-line);
        background: #fbfff8;
        gap: 7px;
        font-family: var(--retro-ui);
        font-size: 13px;
    }

    .back2004-menu-toggle .back2004-icon {
        width: 18px;
        height: 18px;
    }

    .back2004-nav {
        display: none;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .back2004-nav.is-open {
        display: grid;
    }

    .back2004-nav-item {
        min-height: 54px;
        border-bottom: 1px solid var(--retro-soft-line);
    }

    .back2004-nav-item:nth-child(2n) {
        border-right: 0;
    }

    .back2004-nav-item strong {
        font-size: 14px;
    }

    .back2004-stage {
        display: block;
        padding: 18px 12px 32px;
    }

    .news-rail {
        display: flex;
        min-height: 38px;
        padding: 0 6px;
        align-items: center;
    }

    .news-rail span {
        position: static;
        font-size: 26px;
        transform: none;
    }

    .news-rail i {
        position: static;
        width: 100%;
        height: 1px;
        margin-left: 14px;
        border: 0;
        border-top: 1px dashed var(--retro-line);
        transform: none;
    }

    .back2004-panels {
        gap: 24px;
    }

    .retro-panel {
        border-radius: 20px;
    }

    .news-list-panel {
        padding: 15px 12px 50px;
    }

    .news-row {
        min-height: 48px;
        grid-template-columns: 34px 22px minmax(0, 1fr);
        gap: 4px;
    }

    .news-row-copy {
        white-space: normal;
    }

    .news-row-copy time {
        display: block;
        font-size: 11px;
    }

    .news-preview-panel,
    .archive-summary,
    .error-message,
    .article-content-panel {
        padding: 24px 20px 64px;
    }

    .news-preview-copy {
        min-height: 0;
    }

    .article-index-panel {
        display: block;
        padding: 24px 20px 44px;
    }

    .retro-comment-fields {
        grid-template-columns: 1fr;
    }

    .error-panels {
        grid-template-columns: 1fr;
    }

    .error-code {
        padding: 28px 22px;
    }

    .back2004-footer {
        display: block;
        padding: 10px 16px 14px;
    }

    .footer-ornament {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

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