:root {
    --bg: #070a12;
    --bg-soft: #0d1220;
    --panel: #111827;
    --panel-2: #151d2e;
    --line: rgba(148, 176, 255, 0.12);
    --text: #dbe5f5;
    --muted: #8b9bb6;
    --neon-cyan: #35e6f0;
    --neon-violet: #a974ff;
    --neon-pink: #ff5d8f;
    --radius: 14px;
    --mono: ui-monospace, SFMono-Regular, "Cascadia Mono", Consolas, "Courier New", monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    min-height: 100vh;
    color: var(--text);
    font: 16px/1.75 "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
    background:
        radial-gradient(900px 460px at 12% -8%, rgba(53, 230, 240, 0.14), transparent 60%),
        radial-gradient(760px 420px at 92% 0%, rgba(169, 116, 255, 0.14), transparent 62%),
        linear-gradient(180deg, var(--bg-soft), var(--bg) 380px),
        repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.022) 0 1px, transparent 1px 46px),
        repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.022) 0 1px, transparent 1px 46px),
        var(--bg);
    background-attachment: fixed;
}

a { color: var(--neon-cyan); text-decoration: none; }
a:hover { text-decoration: underline; }

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

/* ---------- header ---------- */
.site-head {
    position: sticky;
    top: 0;
    z-index: 30;
    backdrop-filter: blur(14px);
    background: rgba(7, 10, 18, 0.78);
    border-bottom: 1px solid var(--line);
}

.head-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    gap: 22px;
}

.brand { display: flex; align-items: center; gap: 10px; color: var(--text); }
.brand:hover { text-decoration: none; }

.brand-mark {
    font-family: var(--mono);
    font-size: 13px;
    letter-spacing: -1px;
    color: var(--neon-cyan);
    text-shadow: 0 0 12px rgba(53, 230, 240, 0.75);
}

.brand-text { font-weight: 700; letter-spacing: .04em; }

.nav { display: flex; gap: 18px; font-size: 14px; }
.nav a { color: var(--muted); }
.nav a:hover { color: var(--text); text-decoration: none; }

.search { margin-left: auto; }
.search input {
    width: 210px;
    padding: 8px 12px;
    color: var(--text);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--line);
    border-radius: 999px;
    outline: none;
    font-size: 13px;
}
.search input:focus { border-color: rgba(53, 230, 240, 0.6); box-shadow: 0 0 0 3px rgba(53, 230, 240, 0.12); }

/* ---------- layout ---------- */
.shell { max-width: 1180px; margin: 0 auto; padding: 30px 20px 60px; }

.cols { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 28px; align-items: start; }
.col-main { min-width: 0; }
.col-side { position: sticky; top: 84px; display: grid; gap: 18px; }

/* ---------- hero ---------- */
.hero {
    padding: 34px 30px 30px;
    margin-bottom: 26px;
    border: 1px solid var(--line);
    border-radius: calc(var(--radius) + 4px);
    background: linear-gradient(135deg, rgba(53, 230, 240, 0.09), rgba(169, 116, 255, 0.07) 45%, rgba(255, 255, 255, 0.02));
    overflow: hidden;
    position: relative;
}
.hero::after {
    content: "";
    position: absolute;
    inset: auto -40% -80% auto;
    width: 60%;
    height: 220px;
    background: radial-gradient(closest-side, rgba(53, 230, 240, 0.22), transparent);
    filter: blur(10px);
}
.hero-kicker { margin: 0; font-family: var(--mono); font-size: 11px; letter-spacing: .22em; color: var(--neon-cyan); text-transform: uppercase; }
.hero-title { margin: 10px 0 6px; font-size: 30px; line-height: 1.3; letter-spacing: .01em; }
.hero-title em {
    font-style: normal;
    background: linear-gradient(90deg, var(--neon-cyan), var(--neon-violet));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.hero-desc { margin: 0; color: var(--muted); font-size: 14px; }

/* ---------- cards ---------- */
.cards { display: grid; gap: 18px; }

.card {
    display: grid;
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 18px;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.01));
    transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.card:hover {
    transform: translateY(-3px);
    border-color: rgba(53, 230, 240, 0.42);
    box-shadow: 0 16px 40px -22px rgba(53, 230, 240, 0.55);
}
.card-cover { border-radius: 10px; overflow: hidden; align-self: stretch; }
.card-cover img { width: 100%; height: 100%; object-fit: cover; }
.card-body { min-width: 0; }
.card-title { margin: 2px 0 8px; font-size: 19px; line-height: 1.45; }
.card-title a { color: var(--text); }
.card-title a:hover { color: var(--neon-cyan); text-decoration: none; }
.card-excerpt { margin: 0 0 12px; color: var(--muted); font-size: 14px; }
.card-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 12px; color: var(--muted); }
.card-views { margin-left: auto; font-family: var(--mono); }

.chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 9px;
    font-family: var(--mono);
    font-size: 11.5px;
    color: #b8d8ff;
    background: rgba(96, 165, 250, 0.1);
    border: 1px solid rgba(96, 165, 250, 0.25);
    border-radius: 999px;
}
.chip:hover { color: var(--neon-cyan); border-color: rgba(53, 230, 240, 0.5); text-decoration: none; }
.chip-tag { color: #d8c6ff; background: rgba(169, 116, 255, 0.12); border-color: rgba(169, 116, 255, 0.28); }
.chip i { font-style: normal; opacity: .6; }

/* ---------- sidebar ---------- */
.widget { padding: 16px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255, 255, 255, 0.022); }
.widget-title { margin: 0 0 12px; font-size: 13px; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
.hot-list { margin: 0; padding: 0; list-style: none; counter-reset: hot; display: grid; gap: 10px; }
.hot-list li { display: flex; gap: 10px; align-items: baseline; font-size: 14px; }
.hot-list li::before { counter-increment: hot; content: counter(hot, decimal-leading-zero); font-family: var(--mono); font-size: 12px; color: var(--neon-violet); }
.hot-list a { color: var(--text); flex: 1; min-width: 0; }
.hot-list a:hover { color: var(--neon-cyan); }
.hot-list span { font-family: var(--mono); font-size: 11px; color: var(--muted); }
.chip-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.quick-links { display: flex; gap: 14px; font-size: 14px; }

/* ---------- page heads / archive ---------- */
.page-head { margin-bottom: 18px; }
.page-heading { margin: 0 0 4px; font-size: 24px; }
.page-note { margin: 0; color: var(--muted); font-size: 14px; }

.archive { display: grid; gap: 26px; }
.archive-label { margin: 0 0 10px; font-size: 15px; font-family: var(--mono); color: var(--neon-cyan); letter-spacing: .08em; }
.archive-label i { font-style: normal; color: var(--muted); margin-left: 8px; }
.archive-list { margin: 0; padding: 0 0 0 16px; list-style: none; border-left: 1px solid var(--line); display: grid; gap: 8px; }
.archive-list li { display: flex; gap: 12px; align-items: baseline; }
.archive-list time { font-family: var(--mono); font-size: 12px; color: var(--muted); }
.archive-list a { color: var(--text); }
.archive-list a:hover { color: var(--neon-cyan); }
.archive-views { margin-left: auto; font-size: 12px; color: var(--muted); }

/* ---------- post ---------- */
.post { padding: 30px 32px 34px; border: 1px solid var(--line); border-radius: calc(var(--radius) + 4px); background: rgba(255, 255, 255, 0.025); }
.post-head { margin-bottom: 22px; }
.post-title { margin: 0 0 10px; font-size: 29px; line-height: 1.35; }
.post-meta { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; font-size: 13px; color: var(--muted); }
.post-cover { margin: 0 0 22px; border-radius: 12px; overflow: hidden; border: 1px solid var(--line); }
.post-lead { margin: 0 0 22px; padding: 14px 16px; font-size: 15px; color: #cfe2ff; border-left: 3px solid var(--neon-cyan); background: rgba(53, 230, 240, 0.06); border-radius: 0 10px 10px 0; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--line); }

.post-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 26px; }
.post-nav-link { display: block; padding: 13px 15px; font-size: 14px; color: var(--text); border: 1px solid var(--line); border-radius: 12px; background: rgba(255, 255, 255, 0.02); }
.post-nav-link:hover { border-color: rgba(53, 230, 240, 0.45); text-decoration: none; }
.post-nav-link span { display: block; font-size: 11px; color: var(--muted); letter-spacing: .1em; }
.post-nav-next { text-align: right; }

.related { margin-top: 30px; }
.section-title { margin: 0 0 12px; font-size: 16px; letter-spacing: .06em; color: var(--muted); text-transform: uppercase; }
.related ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 9px; }
.related li { display: flex; gap: 12px; align-items: baseline; }
.related time { margin-left: auto; font-family: var(--mono); font-size: 12px; color: var(--muted); }

/* ---------- prose ---------- */
.prose { font-size: 16.5px; }
.prose h2, .prose h3 { margin: 34px 0 14px; line-height: 1.4; }
.prose h2 { padding-left: 12px; font-size: 22px; border-left: 3px solid var(--neon-violet); }
.prose h3 { font-size: 18px; }
.prose p { margin: 0 0 16px; }
.prose ul, .prose ol { margin: 0 0 16px; padding-left: 24px; }
.prose li { margin: 5px 0; }
.prose hr { margin: 30px 0; border: none; border-top: 1px solid var(--line); }
.prose a { border-bottom: 1px solid rgba(53, 230, 240, 0.4); }
.prose a:hover { text-decoration: none; background: rgba(53, 230, 240, 0.08); }
.prose blockquote { margin: 0 0 16px; padding: 12px 18px; color: #c7d6ee; border-left: 3px solid var(--neon-cyan); background: rgba(255, 255, 255, 0.03); border-radius: 0 10px 10px 0; }
.prose blockquote p:last-child { margin-bottom: 0; }
.prose img { margin: 18px 0; border-radius: 12px; border: 1px solid var(--line); }
.prose code { padding: 2px 6px; font-family: var(--mono); font-size: 14px; color: #ffd9a8; background: rgba(255, 180, 80, 0.1); border-radius: 5px; }
.prose pre { margin: 0 0 18px; padding: 16px 18px; overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; background: #0a0f1a; }
.prose pre code { padding: 0; font-size: 13.5px; color: #d6e4ff; background: none; }
.prose table { width: 100%; margin: 0 0 18px; border-collapse: collapse; font-size: 14.5px; }
.prose th, .prose td { padding: 9px 12px; border: 1px solid var(--line); }
.prose th { color: #bcd3f2; background: rgba(255, 255, 255, 0.04); }
.prose mark { padding: 1px 5px; border-radius: 4px; background: rgba(169, 116, 255, 0.35); color: #fff; }

/* ---------- pager / empty / flash ---------- */
.pager { display: flex; gap: 14px; align-items: center; justify-content: center; margin-top: 28px; font-size: 14px; }
.pager-info { font-family: var(--mono); color: var(--muted); }
.pager-item { padding: 8px 16px; border: 1px solid var(--line); border-radius: 999px; color: var(--text); }
.pager-item:hover { border-color: rgba(53, 230, 240, 0.5); text-decoration: none; }

.empty { padding: 40px 20px; text-align: center; color: var(--muted); border: 1px dashed var(--line); border-radius: var(--radius); }

.notfound { padding: 70px 20px; text-align: center; }
.notfound-code { margin: 0; font-family: var(--mono); font-size: 66px; color: var(--neon-cyan); text-shadow: 0 0 26px rgba(53, 230, 240, 0.5); }

.flash { max-width: 1180px; margin: 0 auto 18px; padding: 12px 16px; border-radius: 10px; font-size: 14px; }
.flash-ok { color: #a7f3d0; background: rgba(16, 185, 129, 0.12); border: 1px solid rgba(16, 185, 129, 0.3); }
.flash-err { color: #fecdd3; background: rgba(244, 63, 94, 0.12); border: 1px solid rgba(244, 63, 94, 0.3); }

/* ---------- buttons / forms ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 9px 16px;
    font-size: 14px;
    font-family: inherit;
    color: var(--text);
    cursor: pointer;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.04);
    transition: border-color .16s ease, transform .16s ease;
}
.btn:hover { text-decoration: none; border-color: rgba(53, 230, 240, 0.5); }
.btn-primary { color: #04121a; font-weight: 600; background: linear-gradient(90deg, var(--neon-cyan), #7dd3fc); border-color: transparent; }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 12px 26px -14px rgba(53, 230, 240, 0.8); }
.btn-ghost { color: var(--muted); }
.btn-danger { color: #ff8fa8; border-color: rgba(255, 93, 143, 0.4); }
.btn-mini { padding: 5px 10px; font-size: 12.5px; }
.btn-block { width: 100%; }

.field { display: block; margin-bottom: 14px; }
.field > span { display: block; margin-bottom: 6px; font-size: 12.5px; letter-spacing: .06em; color: var(--muted); }
.field input, .field select, .field textarea {
    width: 100%;
    padding: 10px 12px;
    font-size: 14px;
    font-family: inherit;
    color: var(--text);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--line);
    border-radius: 10px;
    outline: none;
}
.field textarea { resize: vertical; line-height: 1.7; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: rgba(53, 230, 240, 0.6); box-shadow: 0 0 0 3px rgba(53, 230, 240, 0.1); }
#f-content { font-family: var(--mono); font-size: 14px; }

.auth-card { max-width: 400px; margin: 40px auto; padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255, 255, 255, 0.03); }
.auth-title { margin: 0 0 6px; font-size: 21px; }
.auth-note, .auth-foot { margin: 0 0 16px; font-size: 13px; color: var(--muted); }
.auth-error { margin: 0 0 14px; padding: 9px 12px; font-size: 13px; color: #fecdd3; background: rgba(244, 63, 94, 0.12); border-radius: 8px; }

/* ---------- admin ---------- */
.admin-wrap { display: grid; gap: 20px; }
.admin-bar { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; justify-content: space-between; }
.admin-h1 { margin: 0; font-size: 21px; }
.admin-bar-actions { display: flex; flex-wrap: wrap; gap: 10px; }

.stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; }
.stat { padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; background: rgba(255, 255, 255, 0.03); }
.stat span { display: block; font-size: 12px; letter-spacing: .08em; color: var(--muted); }
.stat b { font-family: var(--mono); font-size: 22px; color: var(--neon-cyan); }

.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th, .table td { padding: 11px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.table th { font-size: 12px; letter-spacing: .08em; color: var(--muted); text-transform: uppercase; }
.table a { color: var(--text); }
.table a:hover { color: var(--neon-cyan); }
.td-title code { display: block; margin-top: 3px; font-family: var(--mono); font-size: 11.5px; color: var(--muted); }
.td-tags i { font-style: normal; font-family: var(--mono); font-size: 11.5px; color: #c9b4ff; margin-right: 6px; }
.td-act { white-space: nowrap; }
.inline { display: inline; }
.badge { padding: 2px 8px; font-size: 11.5px; border-radius: 999px; }
.badge-published { color: #a7f3d0; background: rgba(16, 185, 129, 0.14); }
.badge-draft { color: #fcd9a0; background: rgba(245, 158, 11, 0.14); }
.logout-form { justify-self: start; }

.editor-grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 20px; align-items: start; }
.editor-main { display: grid; gap: 10px; }
.editor-side { padding: 16px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255, 255, 255, 0.03); }
.field-grow textarea { min-height: 460px; }

.md-toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; padding: 8px; border: 1px solid var(--line); border-radius: 10px; background: rgba(255, 255, 255, 0.03); }
.md-toolbar button { padding: 5px 11px; font-size: 12.5px; color: var(--text); cursor: pointer; border: 1px solid var(--line); border-radius: 8px; background: rgba(255, 255, 255, 0.04); font-family: inherit; }
.md-toolbar button:hover { border-color: rgba(53, 230, 240, 0.5); }
.md-hint { margin-left: auto; font-family: var(--mono); font-size: 11.5px; color: var(--muted); }

.preview { padding: 18px 20px; border: 1px dashed var(--line); border-radius: 12px; background: rgba(0, 0, 0, 0.2); }
.preview[hidden] { display: none; }

.settings-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 18px; }
.panel-form { padding: 20px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255, 255, 255, 0.03); align-self: start; }
.form-h2 { margin: 0 0 14px; font-size: 16px; }
.form-note { margin: 0 0 14px; font-size: 13px; color: var(--muted); }

/* ---------- footer ---------- */
.site-foot { border-top: 1px solid var(--line); background: rgba(7, 10, 18, 0.6); }
.foot-inner { max-width: 1180px; margin: 0 auto; padding: 20px; display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; font-size: 13px; color: var(--muted); }

/* ---------- responsive ---------- */
@media (max-width: 1000px) {
    .cols, .editor-grid { grid-template-columns: minmax(0, 1fr); }
    .col-side { position: static; }
}

@media (max-width: 640px) {
    .head-inner { flex-wrap: wrap; gap: 12px; }
    .search { margin-left: 0; width: 100%; }
    .search input { width: 100%; }
    .nav { order: 3; }
    .hero { padding: 24px 20px; }
    .hero-title { font-size: 24px; }
    .card { grid-template-columns: minmax(0, 1fr); }
    .card-cover img { max-height: 170px; }
    .post { padding: 22px 18px 26px; }
    .post-title { font-size: 23px; }
    .post-nav { grid-template-columns: 1fr; }
    .table { font-size: 13px; }
    .table td:nth-child(4), .table th:nth-child(4) { display: none; }
}