:root {
    --bg: #0a0c10;
    --panel: #11151c;
    --line: rgba(255, 255, 255, .09);
    --text: #d1d5db;
    --muted: #8d95a3;
    --title: #ffffff;
    --accent: #8b9bb4;
    --accent-strong: #c3cfdf;
    --danger: #d98a8a;
    --font: "Noto Serif SC", "Source Han Serif SC", "Songti SC", STSong, "SimSun", Georgia, serif;
    --sans: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.8;
}

a { color: var(--accent-strong); text-decoration: none; }
a:hover { color: var(--title); }

code, pre { font-family: "Cascadia Code", Consolas, monospace; font-size: .9em; }

/* ── 顶栏 ─────────────────────────────────────────────────────────────── */

.top {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(10, 12, 16, .92);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(12px);
}

.bar {
    max-width: 1040px;
    margin: 0 auto;
    padding: .85rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 1.4rem;
}

.brand {
    font-family: var(--sans);
    font-size: .8rem;
    letter-spacing: .32em;
    text-transform: uppercase;
    color: var(--title);
}

.links {
    display: flex;
    gap: 1.2rem;
    margin-left: auto;
    font-family: var(--sans);
    font-size: .88rem;
}

.links a { color: var(--muted); }
.links a:hover, .links a.on { color: var(--title); }
.links a.on { border-bottom: 1px solid var(--accent); }

.who {
    display: flex;
    align-items: center;
    gap: .7rem;
    font-family: var(--sans);
    font-size: .82rem;
    color: var(--muted);
}

.logout { margin: 0; }

/* ── 布局 ─────────────────────────────────────────────────────────────── */

.wrap {
    max-width: 860px;
    margin: 0 auto;
    padding: 2.4rem 1.25rem 5rem;
}

.wrap.wide { max-width: 1040px; }

.head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.6rem;
}

h1 { color: var(--title); font-size: 1.6rem; font-weight: 500; margin: 0; letter-spacing: .02em; }
h2 { color: var(--title); font-size: 1.05rem; font-weight: 500; margin: 0 0 1rem; letter-spacing: .06em; }

.sub { color: var(--muted); margin: -.4rem 0 1.6rem; font-size: .92rem; }
.muted { color: var(--muted); }
.eyebrow { font-family: var(--sans); letter-spacing: .3em; color: var(--accent); font-size: .72rem; margin: 0 0 .8rem; }

/* ── 按钮 / 链接 ──────────────────────────────────────────────────────── */

.btn {
    display: inline-block;
    padding: .55rem 1.1rem;
    border: 1px solid var(--accent);
    border-radius: .3rem;
    background: transparent;
    color: var(--title);
    font-family: var(--sans);
    font-size: .85rem;
    letter-spacing: .08em;
    cursor: pointer;
    transition: background-color .2s, color .2s;
}

.btn:hover { background: var(--accent); color: #0b0d11; }
.btn.small { padding: .35rem .8rem; font-size: .8rem; }
.btn[disabled] { opacity: .5; cursor: default; }

.link {
    border: 0;
    background: none;
    padding: 0;
    color: var(--accent-strong);
    font: inherit;
    cursor: pointer;
}

.link:hover { color: var(--title); }
.link.small { font-size: .82rem; }
.link.danger { color: var(--danger); }

/* ── 登录卡片 ─────────────────────────────────────────────────────────── */

.card {
    max-width: 420px;
    margin: 6vh auto 0;
    padding: 2.2rem;
    border: 1px solid var(--line);
    border-radius: .5rem;
    background: var(--panel);
}

.card.narrow { max-width: 400px; }
.card.center { text-align: center; margin-top: 14vh; }

form { margin: 0; }

label {
    display: block;
    margin-bottom: 1.1rem;
    font-family: var(--sans);
    font-size: .85rem;
    color: var(--muted);
}

input, textarea, select {
    display: block;
    width: 100%;
    margin-top: .4rem;
    padding: .6rem .7rem;
    border: 1px solid var(--line);
    border-radius: .3rem;
    background: #0d1015;
    color: var(--text);
    font-family: var(--sans);
    font-size: .95rem;
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--accent);
}

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

.hint {
    display: block;
    margin-top: .35rem;
    color: #6f7886;
    font-size: .78rem;
}

.msg {
    margin: 0 0 1rem;
    color: var(--danger);
    font-family: var(--sans);
    font-size: .85rem;
}

.msg.ok { color: #8fc99a; }

.foot { margin: 1.6rem 0 0; color: var(--muted); font-size: .85rem; font-family: var(--sans); }

/* ── 列表 ─────────────────────────────────────────────────────────────── */

.tabs { display: flex; gap: 1.4rem; font-family: var(--sans); font-size: .95rem; }
.tabs a { color: var(--muted); padding-bottom: .3rem; }
.tabs a.on { color: var(--title); border-bottom: 1px solid var(--accent); }

.list { list-style: none; margin: 0; padding: 0; }

.row {
    padding: 1.15rem 0;
    border-bottom: 1px solid var(--line);
}

.row-title { color: var(--title); font-size: 1.05rem; }

.row-excerpt {
    margin: .35rem 0 .45rem;
    color: var(--muted);
    font-size: .88rem;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.row-meta { margin: 0; color: #6f7886; font-family: var(--sans); font-size: .78rem; }

.pin {
    display: inline-block;
    margin-right: .5rem;
    padding: 0 .4rem;
    border: 1px solid var(--line);
    border-radius: .2rem;
    color: var(--accent);
    font-family: var(--sans);
    font-size: .68rem;
    vertical-align: middle;
}

.empty {
    padding: 2rem 0;
    color: var(--muted);
    list-style: none;
}

/* ── 帖子 ─────────────────────────────────────────────────────────────── */

.crumbs { margin: 0 0 1.4rem; font-family: var(--sans); font-size: .82rem; }

.post {
    padding-bottom: 1.6rem;
    border-bottom: 1px solid var(--line);
}

.post h1 { font-size: 1.75rem; line-height: 1.45; margin-bottom: .5rem; }

.post-meta { margin: 0 0 1.6rem; color: #6f7886; font-family: var(--sans); font-size: .8rem; }

.actions {
    display: flex;
    gap: 1.2rem;
    margin-top: 1.6rem;
    font-family: var(--sans);
    font-size: .85rem;
    align-items: center;
}

.md p { margin: 0 0 1.1em; }
.md h2, .md h3, .md h4 { color: var(--title); margin: 1.8em 0 .6em; }
.md ul, .md ol { padding-left: 1.4em; margin: 0 0 1.1em; }
.md li { margin-bottom: .3em; }
.md blockquote {
    margin: 0 0 1.1em;
    padding: .2em 1em;
    border-left: 2px solid var(--accent);
    color: var(--muted);
}
.md blockquote p { margin: .3em 0; }
.md pre {
    margin: 0 0 1.1em;
    padding: .9rem 1rem;
    border: 1px solid var(--line);
    border-radius: .3rem;
    background: #0d1015;
    overflow-x: auto;
}
.md code { color: var(--accent-strong); }
.md pre code { color: var(--text); }
.md hr { border: 0; border-top: 1px solid var(--line); margin: 1.8em 0; }
.md a { text-decoration: underline; text-underline-offset: .2em; }

/* ── 评论 ─────────────────────────────────────────────────────────────── */

.replies { margin-top: 2.4rem; }

.reply-list { list-style: none; margin: 0 0 2.2rem; padding: 0; }

.reply {
    padding: 1.1rem 0;
    border-bottom: 1px solid var(--line);
}

.reply-meta { margin: 0 0 .5rem; color: #6f7886; font-family: var(--sans); font-size: .78rem; }
.reply.deleted p { margin: 0; }

.reply-form { max-width: 100%; }

/* ── 面板 / 表格 ──────────────────────────────────────────────────────── */

.panel {
    padding: 1.6rem;
    margin-bottom: 1.4rem;
    border: 1px solid var(--line);
    border-radius: .4rem;
    background: var(--panel);
}

.panel form { max-width: 420px; }

.table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--sans);
    font-size: .85rem;
}

.table th, .table td {
    padding: .7rem .6rem;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: middle;
}

.table th { color: var(--muted); font-weight: 400; font-size: .78rem; letter-spacing: .06em; }
.table td.ops { white-space: nowrap; }
.table td.ops .link { margin-right: .8rem; }
.bad { color: var(--danger); }

.reset-link { word-break: break-all; color: var(--accent-strong); }

.editor { max-width: 100%; }
.row-actions { display: flex; align-items: center; gap: 1.2rem; }

.inline { display: inline; }

/* ── 响应式 ───────────────────────────────────────────────────────────── */

@media (max-width: 720px) {
    .bar { flex-wrap: wrap; gap: .7rem 1rem; }
    .links { order: 3; width: 100%; margin-left: 0; overflow-x: auto; padding-bottom: .2rem; }
    .who { margin-left: auto; }
    .wrap { padding-top: 1.6rem; }
    .card { margin-top: 2rem; padding: 1.6rem; }
    .table { display: block; overflow-x: auto; white-space: nowrap; }
    .post h1 { font-size: 1.4rem; }
}