/* ============================================
   「东方编辑」— 个人博客设计系统
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Paper & ink */
    --paper: #f3ecd9;
    --paper-2: #e9dfc4;
    --paper-3: #fbf6e8;
    --ink: #1a1410;
    --ink-soft: #3d342a;
    --ink-mute: #8a7a5a;
    --ink-faint: #b5a886;

    /* Cinnabar (accent) */
    --cinnabar: #b8421f;
    --cinnabar-deep: #962f12;
    --cinnabar-soft: #e6c5b3;

    /* Rules & dividers */
    --rule: #c8b88e;
    --rule-soft: #ddd1a8;
    --rule-faint: #ece1bd;

    /* Functional */
    --bg-card: #faf3df;
    --bg-elevated: #fefae6;
    --shadow-soft: 0 1px 0 rgba(26, 20, 16, 0.04);
    --shadow-lift: 0 12px 40px -16px rgba(26, 20, 16, 0.18);

    /* Type */
    --font-display: "Fraunces", "Noto Serif SC", "Source Serif 4", Georgia, serif;
    --font-serif: "Source Serif 4", "Noto Serif SC", "Fraunces", Georgia, serif;
    --font-zh: "Noto Serif SC", "Source Serif 4", "Fraunces", Georgia, serif;
    --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

html {
    font-size: 17px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-zh);
    background-color: var(--paper);
    color: var(--ink);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: "kern", "liga", "calt";
    background-image:
        radial-gradient(at 20% 10%, rgba(184, 66, 31, 0.04) 0px, transparent 50%),
        radial-gradient(at 80% 90%, rgba(184, 66, 31, 0.03) 0px, transparent 50%),
        url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.4 0 0 0 0 0.3 0 0 0 0 0.1 0 0 0 0.05 0'/></filter><rect width='200' height='200' filter='url(%23n)'/></svg>");
    background-attachment: fixed;
}

::selection {
    background: var(--cinnabar);
    color: var(--paper-3);
}

a {
    color: var(--cinnabar);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--cinnabar-deep);
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 500;
    letter-spacing: -0.01em;
    color: var(--ink);
}

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
}

/* ============================================
   HEADER
   ============================================ */

.site-header {
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    background: var(--paper);
    padding: 1.25rem 0;
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(8px);
    background-color: rgba(243, 236, 217, 0.92);
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    font-style: italic;
    color: var(--ink);
    letter-spacing: -0.02em;
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.logo::before {
    content: "✦";
    color: var(--cinnabar);
    font-style: normal;
    font-size: 0.9rem;
}

.nav {
    display: flex;
    align-items: center;
    gap: 1.75rem;
    flex: 1;
    justify-content: flex-end;
}

.nav > a {
    color: var(--ink-soft);
    font-size: 0.95rem;
    font-weight: 400;
    position: relative;
    padding: 0.25rem 0;
}

.nav > a:not(.btn)::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--cinnabar);
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav > a:not(.btn):hover {
    color: var(--cinnabar);
}

.nav > a:not(.btn):hover::after {
    width: 100%;
}

.search-form {
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--rule);
    padding: 0.25rem 0;
    transition: border-color 0.2s ease;
}

.search-form:focus-within {
    border-color: var(--cinnabar);
}

.search-form input {
    border: none;
    background: transparent;
    outline: none;
    font-size: 0.9rem;
    width: 140px;
    padding: 0.1rem 0.25rem;
    color: var(--ink);
}

.search-form input::placeholder {
    color: var(--ink-mute);
    font-style: italic;
}

.search-form button {
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--ink-mute);
    padding: 0 0.35rem;
    transition: color 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.search-form button svg {
    width: 18px;
    height: 18px;
}

.search-form button:hover {
    color: var(--cinnabar);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.9rem;
    color: var(--ink-soft);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--cinnabar);
    color: var(--paper-3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.85rem;
    font-family: var(--font-display);
    font-style: italic;
}

.username {
    color: var(--ink);
    font-weight: 500;
}

.settings-link {
    color: var(--ink-mute);
    font-size: 0.85rem;
    border-left: 1px solid var(--rule);
    padding-left: 0.75rem;
}

.settings-link:hover {
    color: var(--cinnabar);
}

.logout-form {
    margin: 0;
}

.logout-form button {
    border: none;
    background: transparent;
    color: var(--ink-mute);
    cursor: pointer;
    font-size: 0.9rem;
    padding: 0.25rem 0;
    transition: color 0.2s ease;
}

.logout-form button:hover {
    color: var(--cinnabar);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-block;
    padding: 0.6rem 1.4rem;
    border: 1px solid var(--ink);
    background: transparent;
    color: var(--ink);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
    font-family: var(--font-zh);
    border-radius: 0;
}

.btn:hover {
    background: var(--ink);
    color: var(--paper-3);
}

.btn-primary {
    background: var(--cinnabar);
    color: var(--paper-3);
    border-color: var(--cinnabar);
}

.btn-primary:hover {
    background: var(--cinnabar-deep);
    border-color: var(--cinnabar-deep);
    color: var(--paper-3);
}

.btn-danger {
    border-color: var(--cinnabar);
    color: var(--cinnabar);
    background: transparent;
}

.btn-danger:hover {
    background: var(--cinnabar);
    color: var(--paper-3);
}

.btn-link {
    border: none;
    background: transparent;
    color: var(--ink-mute);
    cursor: pointer;
    font-size: 0.85rem;
    padding: 0;
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-color: var(--rule);
    font-family: inherit;
}

.btn-link:hover {
    color: var(--cinnabar);
    text-decoration-color: var(--cinnabar);
}

/* ============================================
   MAIN
   ============================================ */

.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 32px 6rem;
    min-height: calc(100vh - 200px);
    animation: fade-in 0.6s ease-out;
}

@keyframes fade-in {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

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

/* ============================================
   HOME — Masthead & Hero
   ============================================ */

.masthead {
    text-align: center;
    padding: 1rem 0 2rem;
    border-bottom: 1px solid var(--rule);
    margin-bottom: 1.5rem;
    position: relative;
}

.masthead::before, .masthead::after {
    content: "❦";
    position: absolute;
    color: var(--cinnabar);
    font-size: 0.9rem;
    top: 50%;
    transform: translateY(-50%);
}

.masthead::before { left: 0; }
.masthead::after { right: 0; }

.masthead-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    font-style: italic;
    color: var(--ink);
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.masthead-subtitle {
    font-family: var(--font-zh);
    color: var(--ink-mute);
    font-size: 0.95rem;
    margin-top: 0.75rem;
    letter-spacing: 0.1em;
    font-style: italic;
}

.masthead-meta {
    margin-top: 1rem;
    color: var(--ink-faint);
    font-size: 0.8rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    font-family: var(--font-mono);
}

/* ============================================
   CATEGORY BAR
   ============================================ */

.category-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    width: fit-content;
    margin: 0 auto 1.5rem;
    border-bottom: 1px solid var(--rule);
    padding: 0;
    justify-content: center;
}

.category-tab {
    padding: 0.85rem 1.5rem;
    color: var(--ink-soft);
    font-size: 0.9rem;
    text-decoration: none;
    position: relative;
    transition: color 0.2s ease;
    letter-spacing: 0.05em;
}

.category-tab::before {
    content: "·";
    color: var(--rule);
    position: absolute;
    left: -2px;
    top: 50%;
    transform: translateY(-50%);
}

.category-tab:first-child::before {
    display: none;
}

.category-tab:hover {
    color: var(--cinnabar);
}

.category-tab.active {
    color: var(--cinnabar);
    font-weight: 600;
}

.category-tab.active::after {
    content: "";
    position: absolute;
    bottom: -1px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 2px;
    background: var(--cinnabar);
}

/* ============================================
   POSTS GRID
   ============================================ */

.section-title {
    font-family: var(--font-display);
    font-size: 0.9rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--ink-mute);
    margin-bottom: 2rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--rule);
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.section-title .post-count {
    font-size: 0.8rem;
    color: var(--ink-faint);
    letter-spacing: 0.1em;
    text-transform: none;
    font-style: italic;
    font-family: var(--font-zh);
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem 3rem;
}

.posts-grid:has(.post-card:first-child:nth-child(2n+1):last-child) {
    grid-template-columns: 1fr;
}

.post-card {
    animation: fade-in-up 0.6s ease-out backwards;
}

.post-card:nth-child(1) { animation-delay: 0.05s; }
.post-card:nth-child(2) { animation-delay: 0.15s; }
.post-card:nth-child(3) { animation-delay: 0.25s; }
.post-card:nth-child(4) { animation-delay: 0.35s; }
.post-card:nth-child(5) { animation-delay: 0.45s; }
.post-card:nth-child(6) { animation-delay: 0.55s; }
.post-card:nth-child(n+7) { animation-delay: 0.65s; }

.post-link {
    display: block;
    color: inherit;
    text-decoration: none;
}

.post-link:hover .post-title {
    color: var(--cinnabar);
}

.post-card .post-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    line-height: 1.25;
    font-weight: 500;
    margin-bottom: 0.75rem;
    transition: color 0.2s ease;
    letter-spacing: -0.01em;
}

.post-excerpt {
    color: var(--ink-soft);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    color: var(--ink-mute);
    font-size: 0.8rem;
    font-family: var(--font-mono);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    align-items: center;
    margin-top: 1rem;
}

.post-meta .date {
    color: var(--cinnabar);
    font-weight: 500;
}

.post-taxonomy {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    margin: 0.75rem 0;
}

.category-badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    background: transparent;
    color: var(--cinnabar);
    border: 1px solid var(--cinnabar);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-decoration: none;
    font-family: var(--font-mono);
    transition: all 0.2s ease;
}

.category-badge:hover {
    background: var(--cinnabar);
    color: var(--paper-3);
}

.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.tag-pill {
    color: var(--ink-mute);
    font-size: 0.8rem;
    font-style: italic;
    text-decoration: none;
    transition: color 0.2s ease;
    font-family: var(--font-display);
}

.tag-pill::before {
    content: "#";
    color: var(--ink-faint);
    margin-right: 1px;
}

.tag-pill:hover {
    color: var(--cinnabar);
}

/* ============================================
   PAGINATION
   ============================================ */

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--rule);
}

.page-numbers {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    margin: 0 0.5rem;
}

.page-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2.25rem;
    height: 2.25rem;
    padding: 0 0.5rem;
    color: var(--ink-soft);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    border: 1px solid transparent;
    transition: all 0.2s ease;
}

.page-num:hover {
    color: var(--cinnabar);
    border-color: var(--rule);
}

.page-current {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2.25rem;
    height: 2.25rem;
    padding: 0 0.5rem;
    color: var(--paper-3);
    background: var(--cinnabar);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 500;
}

.page-ellipsis {
    color: var(--ink-faint);
    padding: 0 0.25rem;
    font-family: var(--font-mono);
    user-select: none;
}

.page-prev, .page-next {
    font-size: 0.85rem;
    padding: 0.5rem 1rem;
}

.page-jump {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin-left: 0.5rem;
    padding-left: 0.75rem;
    border-left: 1px solid var(--rule-soft);
}

.page-jump input[type="number"] {
    width: 4rem;
    height: 2.25rem;
    padding: 0 0.5rem;
    border: 1px solid var(--rule);
    background: var(--paper-3);
    color: var(--ink);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    text-align: center;
    -moz-appearance: textfield;
    border-radius: 0;
}

.page-jump input[type="number"]::-webkit-outer-spin-button,
.page-jump input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.page-jump input[type="number"]:focus {
    outline: none;
    border-color: var(--cinnabar);
}

.page-jump button {
    height: 2.25rem;
    padding: 0 0.85rem;
    font-size: 0.8rem;
    letter-spacing: 0.1em;
}

.page-info {
    color: var(--ink-mute);
    font-size: 0.85rem;
    font-family: var(--font-mono);
    letter-spacing: 0.1em;
}

@media (max-width: 768px) {
    .pagination {
        gap: 0.4rem;
    }

    .page-num, .page-current {
        min-width: 2rem;
        height: 2rem;
        font-size: 0.8rem;
    }

    .page-prev, .page-next {
        font-size: 0.75rem;
        padding: 0.4rem 0.6rem;
    }

    .page-jump {
        margin-left: 0;
        padding-left: 0;
        border-left: none;
        width: 100%;
        justify-content: center;
        margin-top: 0.5rem;
    }
}

/* ============================================
   EMPTY STATE
   ============================================ */

.empty-state {
    text-align: center;
    padding: 5rem 2rem;
    border: 1px dashed var(--rule);
    background: var(--paper-3);
}

.empty-state p {
    color: var(--ink-mute);
    font-style: italic;
    font-size: 1.05rem;
    margin-bottom: 1.5rem;
}

/* ============================================
   POST DETAIL
   ============================================ */

.post-detail {
    max-width: 760px;
    margin: 0 auto;
    padding: 0.5rem 0;
    animation: fade-in 0.6s ease-out;
}

.post-header {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--rule);
    position: relative;
}

.post-header::after {
    content: "❦";
    display: block;
    text-align: center;
    color: var(--cinnabar);
    margin-top: 1.5rem;
    font-size: 0.9rem;
}

.post-header .post-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.75rem);
    line-height: 1.2;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
}

.post-header .post-taxonomy {
    justify-content: center;
    margin-bottom: 1.5rem;
}

.post-header .post-meta {
    justify-content: center;
    gap: 2rem;
}

.post-content {
    font-family: var(--font-zh);
    font-size: 1.1rem;
    line-height: 1.85;
    color: var(--ink);
}

.post-content > * + * {
    margin-top: 1.5em;
}

.post-content h1, .post-content h2, .post-content h3, .post-content h4 {
    font-family: var(--font-display);
    margin-top: 2.5em;
    margin-bottom: 0.75em;
    line-height: 1.3;
}

.post-content h2 {
    font-size: 1.65rem;
    border-bottom: 1px solid var(--rule-soft);
    padding-bottom: 0.3em;
}

.post-content h3 {
    font-size: 1.3rem;
    color: var(--cinnabar);
}

.post-content p {
    text-align: justify;
    text-indent: 2em;
}

.post-content p:first-of-type::first-letter {
    font-family: var(--font-display);
    font-size: 4em;
    float: left;
    line-height: 0.85;
    margin: 0.1em 0.15em 0 0;
    color: var(--cinnabar);
    font-weight: 600;
}

.post-content a {
    color: var(--cinnabar);
    text-decoration: none;
    border-bottom: 1px solid var(--cinnabar-soft);
    transition: border-color 0.2s ease;
}

.post-content a:hover {
    border-bottom-color: var(--cinnabar);
}

.post-content blockquote {
    border-left: 3px solid var(--cinnabar);
    padding: 0.5em 0 0.5em 1.5em;
    margin: 2em 0;
    color: var(--ink-soft);
    font-style: italic;
    font-family: var(--font-display);
    background: linear-gradient(to right, var(--paper-3), transparent 50%);
}

.post-content code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background: var(--paper-2);
    padding: 0.1em 0.4em;
    border: 1px solid var(--rule-faint);
    color: var(--cinnabar-deep);
}

.post-content pre {
    background: var(--ink);
    color: #e8d9b3;
    padding: 1.5em;
    overflow-x: auto;
    margin: 2em 0;
    font-size: 0.85rem;
    line-height: 1.6;
    border-left: 3px solid var(--cinnabar);
}

.post-content pre code {
    background: transparent;
    border: none;
    padding: 0;
    color: inherit;
}

.post-content img {
    margin: 2em auto;
    border: 1px solid var(--rule);
    box-shadow: var(--shadow-soft);
}

.post-content hr {
    border: none;
    text-align: center;
    margin: 3em 0;
}

.post-content hr::after {
    content: "❦ ❦ ❦";
    color: var(--cinnabar);
    letter-spacing: 0.5em;
    font-size: 0.9rem;
}

.post-content ul, .post-content ol {
    padding-left: 1.5em;
}

.post-content li {
    margin: 0.5em 0;
}

.post-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
}

/* ============================================
   ROLE BADGE
   ============================================ */

.role-badge {
    display: inline-block;
    padding: 0.1rem 0.5rem;
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    font-family: var(--font-mono);
    border: 1px solid;
    line-height: 1.4;
    margin-left: 0.4rem;
}

.role-badge.role-admin {
    color: var(--paper-3);
    background: var(--cinnabar);
    border-color: var(--cinnabar);
}

.role-badge.role-vip {
    color: var(--cinnabar);
    background: transparent;
    border-color: var(--cinnabar);
}

.post-back {
    display: inline-block;
    color: var(--ink-mute);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    text-decoration: none;
    transition: color 0.2s ease;
    letter-spacing: 0.05em;
}

.post-back:hover {
    color: var(--cinnabar);
}

.scroll-top {
    position: fixed;
    /* 关键：max-width 760px 居中文章 + 1rem gap + 2rem 按钮宽 = 文章右边沿外侧 */
    right: max(1rem, calc(50% - 380px - 2rem - 1rem));
    bottom: 2rem;
    width: 2rem;
    height: 2rem;
    border: 1px solid var(--ink);
    background: var(--paper-3);
    color: var(--ink);
    cursor: pointer;
    font-size: 0.9rem;
    font-family: var(--font-display);
    display: none;
    align-items: center;
    justify-content: center;
    line-height: 1;
    transition: all 0.2s ease;
    z-index: 40;
    box-shadow: var(--shadow-soft);
}

.scroll-top:hover {
    background: var(--ink);
    color: var(--paper-3);
    border-color: var(--ink);
}

.scroll-top.visible {
    display: flex;
}

@media (max-width: 768px) {
    .scroll-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 1.85rem;
        height: 1.85rem;
        font-size: 0.85rem;
    }
}

.comments-section {
    max-width: 760px;
    margin: 4rem auto 0;
    padding-top: 3rem;
    border-top: 2px double var(--rule);
}

.comments-section h2 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    margin-bottom: 2rem;
    color: var(--ink);
    font-style: italic;
}

.comment-form textarea {
    width: 100%;
    min-height: 100px;
    padding: 1rem;
    border: 1px solid var(--rule);
    background: var(--paper-3);
    font-family: var(--font-zh);
    font-size: 1rem;
    line-height: 1.6;
    resize: vertical;
    margin-bottom: 1rem;
    transition: border-color 0.2s ease;
}

.comment-form textarea:focus {
    outline: none;
    border-color: var(--cinnabar);
}

.login-prompt {
    color: var(--ink-mute);
    font-style: italic;
    padding: 1.5rem;
    background: var(--paper-3);
    border-left: 3px solid var(--cinnabar);
    margin-bottom: 2rem;
}

.login-prompt a {
    color: var(--cinnabar);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.comment {
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--rule-soft);
}

/* 后面紧跟 .comment-replies（即有子评论）的 .comment 不显示底边线，避免折叠按钮下方出现短横线 */
.comment:has(+ .comment-replies) {
    border-bottom: none;
}

.comment-header {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}

.comment-author {
    font-weight: 600;
    color: var(--ink);
    font-family: var(--font-display);
}

.comment-date {
    color: var(--ink-mute);
    font-size: 0.8rem;
    font-family: var(--font-mono);
}

.comment-actions {
    display: flex;
    gap: 1rem;
    margin-left: auto;
}

.comment-content {
    color: var(--ink-soft);
    line-height: 1.7;
    white-space: pre-wrap;
}

/* 嵌套回复：每层 .comment-replies 缩进 + 淡左边竖线（递归累计形成阶梯式，参考 Reddit/YouTube 风） */
.comment-replies {
    margin-left: 1em;
    border-left: 1px solid var(--rule-soft);
    padding-left: 1em;
}

/* 折叠按钮：只显示箭头，居中、加点淡色 */
.comment-toggle {
    font-size: 1.1rem;
    color: var(--ink-mute);
    margin: 0.25em 0 0 0.5em;
    line-height: 1;
}



.edit-textarea {
    width: 100%;
    min-height: 80px;
    padding: 0.75rem;
    border: 1px solid var(--rule);
    background: var(--paper-3);
    font-family: var(--font-zh);
    margin-bottom: 0.5rem;
}

.form-actions {
    display: flex;
    gap: 0.5rem;
}

/* ============================================
   FORMS (Auth & Settings & Editor)
   ============================================ */

.auth-page {
    max-width: 480px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.auth-card {
    background: var(--paper-3);
    border: 1px solid var(--rule);
    padding: 3rem 2.5rem;
    position: relative;
}

.auth-card::before {
    content: "";
    position: absolute;
    inset: 8px;
    border: 1px solid var(--rule-soft);
    pointer-events: none;
}

.auth-card h1 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
    text-align: center;
    font-style: italic;
}

.auth-card .subtitle {
    text-align: center;
    color: var(--ink-mute);
    font-size: 0.9rem;
    margin-bottom: 2rem;
    font-style: italic;
    letter-spacing: 0.05em;
}

.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
    color: var(--ink-mute);
    font-size: 0.9rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--ink-mute);
    margin-bottom: 0.4rem;
    font-family: var(--font-mono);
    font-weight: 500;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="file"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.7rem 0.9rem;
    border: 1px solid var(--rule);
    background: var(--paper);
    color: var(--ink);
    font-size: 1rem;
    font-family: var(--font-zh);
    transition: all 0.2s ease;
    border-radius: 0;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--cinnabar);
    background: var(--paper-3);
}

.form-group textarea {
    min-height: 300px;
    line-height: 1.7;
    resize: vertical;
    font-family: var(--font-mono);
    font-size: 0.95rem;
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'><path d='M2 4l4 4 4-4' stroke='%231a1410' fill='none' stroke-width='1.5'/></svg>");
    background-repeat: no-repeat;
    background-position: right 0.9rem center;
    padding-right: 2.5rem;
}

.form-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 2rem;
}

.alert {
    padding: 0.75rem 1rem;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    border-left: 3px solid;
}

.alert-error {
    background: rgba(184, 66, 31, 0.08);
    border-color: var(--cinnabar);
    color: var(--cinnabar-deep);
}

.alert-success {
    background: rgba(46, 109, 64, 0.08);
    border-color: #2e6d40;
    color: #1e4a2a;
}

/* ============================================
   EDITOR PAGE
   ============================================ */

.editor-page {
    max-width: 820px;
    margin: 0 auto;
    padding: 2rem 0;
}

.editor-page h1 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-style: italic;
    margin-bottom: 2rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--rule);
}

.editor-form .form-group {
    margin-bottom: 1.75rem;
}

.editor-form .form-group label {
    font-size: 0.75rem;
}

/* ============================================
   ADMIN
   ============================================ */

.admin-page {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem 0;
}

.admin-page h1 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-style: italic;
    margin-bottom: 2rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--rule);
}

.admin-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: var(--paper-3);
    border: 1px solid var(--rule);
    padding: 2rem 1.5rem;
    text-align: center;
    position: relative;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.stat-card h3 {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 600;
    color: var(--cinnabar);
    line-height: 1;
    margin-bottom: 0.5rem;
    font-style: italic;
}

.stat-card p {
    color: var(--ink-mute);
    font-size: 0.85rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 1.25rem;
    font-family: var(--font-mono);
}

.admin-nav {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    border-top: 1px solid var(--rule);
    padding-top: 2rem;
}

.admin-nav-btn {
    padding: 0.7rem 1.4rem;
    border: 1px solid var(--ink);
    color: var(--ink);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.admin-nav-btn:hover {
    background: var(--ink);
    color: var(--paper-3);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--paper-3);
    border: 1px solid var(--rule);
    font-size: 0.9rem;
}

.admin-table th {
    background: var(--paper-2);
    color: var(--ink-soft);
    text-align: left;
    padding: 0.85rem 1rem;
    font-weight: 600;
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    font-family: var(--font-mono);
    border-bottom: 1px solid var(--rule);
}

.admin-table td {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--rule-soft);
    color: var(--ink-soft);
    vertical-align: middle;
}

.admin-table tr:last-child td {
    border-bottom: none;
}

.admin-table tr:hover {
    background: var(--paper-2);
}

.admin-table a {
    color: var(--cinnabar);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-color: var(--cinnabar-soft);
}

.admin-table a:hover {
    text-decoration-color: var(--cinnabar);
}

.admin-table .comment-content {
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.admin-table select {
    padding: 0.4rem 1.5rem 0.4rem 0.6rem;
    border: 1px solid var(--rule);
    background: var(--paper);
    font-size: 0.85rem;
    cursor: pointer;
    font-family: var(--font-zh);
    appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 12 12'><path d='M2 4l4 4 4-4' stroke='%231a1410' fill='none' stroke-width='1.5'/></svg>");
    background-repeat: no-repeat;
    background-position: right 0.5rem center;
}

.text-muted {
    color: var(--ink-faint);
    font-style: italic;
    font-size: 0.85rem;
}

/* ============================================
   ERROR PAGE
   ============================================ */

.error-page {
    text-align: center;
    padding: 5rem 2rem;
    max-width: 500px;
    margin: 0 auto;
}

.error-page h1 {
    font-family: var(--font-display);
    font-size: 7rem;
    font-style: italic;
    color: var(--cinnabar);
    line-height: 1;
    margin-bottom: 1rem;
    font-weight: 600;
}

.error-page p {
    color: var(--ink-mute);
    font-size: 1.1rem;
    font-style: italic;
    margin-bottom: 2rem;
}

/* ============================================
   IMPORT (Markdown batch import)
   ============================================ */

.import-form-wrap {
    max-width: 720px;
    margin: 0 auto;
    padding: 2.5rem;
    background: var(--paper-3);
    border: 1px solid var(--rule);
}

.import-form-wrap .subtitle {
    text-align: center;
    color: var(--ink-mute);
    font-style: italic;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.import-hint {
    text-align: center;
    color: var(--ink-mute);
    font-size: 0.85rem;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.import-hint code {
    font-family: var(--font-mono);
    background: var(--paper-2);
    padding: 0.05em 0.4em;
    font-size: 0.85em;
    color: var(--cinnabar);
    margin: 0 0.15em;
}

.import-form input[type="file"] {
    width: 100%;
    padding: 1rem;
    border: 1px dashed var(--rule);
    background: var(--paper);
    color: var(--ink-soft);
    font-family: var(--font-zh);
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.import-form input[type="file"]:hover {
    border-color: var(--cinnabar);
}

.form-hint {
    display: block;
    margin-top: 0.4rem;
    color: var(--ink-faint);
    font-size: 0.8rem;
    font-style: italic;
    font-family: var(--font-zh);
}

.import-form .form-actions {
    margin-top: 2rem;
    justify-content: center;
}

.import-form .btn-primary {
    padding: 0.7rem 2.5rem;
    letter-spacing: 0.15em;
}

.import-example {
    margin-top: 2rem;
    border-top: 1px solid var(--rule-soft);
    padding-top: 1.5rem;
}

.import-example summary {
    color: var(--ink-mute);
    font-size: 0.9rem;
    cursor: pointer;
    font-style: italic;
    letter-spacing: 0.05em;
    padding: 0.25rem 0;
}

.import-example summary:hover {
    color: var(--cinnabar);
}

.import-example pre {
    background: var(--ink);
    color: #e8d9b3;
    padding: 1.5em;
    margin-top: 1rem;
    font-size: 0.85rem;
    line-height: 1.6;
    border-left: 3px solid var(--cinnabar);
    overflow-x: auto;
}

.import-results {
    margin-top: 1rem;
}

.import-summary {
    text-align: center;
    font-size: 1.05rem;
    color: var(--ink-soft);
    margin-bottom: 2rem;
    padding: 1rem;
    background: var(--paper-3);
    border: 1px solid var(--rule);
    font-family: var(--font-zh);
}

.import-summary .count-ok { color: #1e4a2a; font-style: italic; }
.import-summary .count-fail { color: var(--cinnabar); font-style: italic; }

.import-table .status-badge {
    display: inline-block;
    padding: 0.15rem 0.6rem;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    font-family: var(--font-mono);
    border: 1px solid;
}

.import-table .status-ok {
    color: #1e4a2a;
    border-color: #2e6d40;
    background: rgba(46, 109, 64, 0.08);
}

.import-table .status-fail {
    color: var(--cinnabar);
    border-color: var(--cinnabar);
    background: rgba(184, 66, 31, 0.08);
}

.import-table .error-msg {
    color: var(--cinnabar-deep);
    font-size: 0.85rem;
    font-style: italic;
}

.import-table code {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    background: var(--paper-2);
    padding: 0.05em 0.4em;
    color: var(--ink-soft);
}

.import-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--rule);
}

.site-footer {
    border-top: 1px solid var(--rule);
    padding: 1rem 0;
    margin-top: 4rem;
    background: var(--paper-2);
}

.footer-inner {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
    text-align: center;
    color: var(--ink-mute);
    font-size: 0.85rem;
    font-family: var(--font-mono);
    letter-spacing: 0.05em;
}

.footer-inner::before,
.footer-inner::after {
    content: "❦";
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: var(--cinnabar);
    font-size: 0.9rem;
}

.footer-inner::before { left: 32px; }
.footer-inner::after { right: 32px; }

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 900px) {
    .posts-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

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

@media (max-width: 768px) {
    html { font-size: 16px; }

    .header-inner {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }

    .nav {
        flex-wrap: wrap;
        gap: 1rem;
        justify-content: center;
    }

    .logo { justify-content: center; }

    .main-content { padding: 2rem 16px 4rem; }

    .category-bar { font-size: 0.85rem; }
    .category-tab { padding: 0.7rem 1rem; }

    .masthead-title { font-size: 1.75rem; }

    .post-content { font-size: 1rem; }
    .post-content p:first-of-type::first-letter { font-size: 3em; }

    .post-meta { gap: 1rem; }
}