/* ==========================================================================
   意中人 · 个人博客主样式
   字号: warm parchment + ink + wine; serif headings, sans body
   ========================================================================== */

:root {
    /* 色板 */
    --c-bg:          #f6f1e8;          /* 米色羊皮纸 */
    --c-bg-soft:     #efe8da;
    --c-card:        #fcfaf5;
    --c-ink:         #2b2622;          /* 墨色 */
    --c-ink-soft:    #5a5045;
    --c-muted:       #8c8074;
    --c-line:        #d9cdb8;
    --c-line-soft:   #e8dec9;
    --c-accent:      #8a2b3a;          /* 酒红 */
    --c-accent-soft: #b85a68;
    --c-accent-bg:   #f7e9eb;
    --c-gold:        #b5862a;
    --c-link:        #8a2b3a;
    --c-link-hover:  #6a1f2c;

    /* 字体 */
    --ff-serif: "Noto Serif SC", "Songti SC", "SimSun", "Source Han Serif SC", serif;
    --ff-sans:  "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
    --ff-brand: "Ma Shan Zheng", "Noto Serif SC", serif;

    /* 尺度 */
    --container:    1080px;
    --reading:      720px;
    --radius:       14px;
    --radius-sm:    8px;
    --shadow-1:     0 2px 6px rgba(43, 38, 34, .05);
    --shadow-2:     0 8px 28px rgba(43, 38, 34, .08);
    --shadow-3:     0 18px 48px rgba(43, 38, 34, .12);
    --ease:         cubic-bezier(.4, .2, .2, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    background-color: var(--c-bg);
    color: var(--c-ink);
    font-family: var(--ff-sans);
    font-size: 16px;
    line-height: 1.8;
    font-feature-settings: "palt";
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    background-image:
        radial-gradient(circle at 12% 0%, rgba(181, 134, 42, .05), transparent 35%),
        radial-gradient(circle at 88% 4%, rgba(138, 43, 58, .06), transparent 40%);
    background-attachment: fixed;
    min-height: 100vh;
}

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

a {
    color: var(--c-link);
    text-decoration: none;
    transition: color .2s var(--ease);
}
a:hover { color: var(--c-link-hover); }

::selection { background: var(--c-accent-bg); color: var(--c-ink); }

.skip-link {
    position: absolute;
    left: -999px; top: 8px;
    background: var(--c-accent);
    color: #fff;
    padding: 8px 14px;
    border-radius: 6px;
    z-index: 1000;
}
.skip-link:focus { left: 8px; }

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

/* ============ 顶栏 ============ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(246, 241, 232, 0.85);
    backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--c-line-soft);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--c-ink);
}
.brand:hover { color: var(--c-ink); }
.brand-mark {
    width: 42px; height: 42px;
    display: grid; place-items: center;
    background: linear-gradient(135deg, var(--c-accent) 0%, #6a1f2c 100%);
    color: #fff;
    font-family: var(--ff-brand);
    font-size: 28px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(138, 43, 58, .25);
    transform: rotate(-2deg);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name {
    font-family: var(--ff-serif);
    font-weight: 700;
    font-size: 22px;
    letter-spacing: 2px;
}
.brand-tagline {
    font-size: 11px;
    color: var(--c-muted);
    letter-spacing: 1px;
    margin-top: 2px;
}

.site-nav {
    display: flex;
    gap: 6px;
}
.site-nav a {
    color: var(--c-ink-soft);
    font-size: 15px;
    padding: 8px 14px;
    border-radius: 999px;
    position: relative;
    transition: background .2s var(--ease), color .2s var(--ease);
}
.site-nav a:hover { color: var(--c-ink); background: var(--c-bg-soft); }
.site-nav a.active {
    color: var(--c-accent);
    background: var(--c-accent-bg);
    font-weight: 500;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: 0;
    cursor: pointer;
    padding: 8px;
}
.nav-toggle span {
    width: 24px; height: 2px;
    background: var(--c-ink);
    border-radius: 2px;
    transition: transform .25s var(--ease), opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ 主区 ============ */
.site-main { padding: 48px 0 72px; }

.page-head {
    text-align: center;
    margin: 28px auto 56px;
    max-width: 720px;
}
.page-head h1 {
    font-family: var(--ff-serif);
    font-weight: 700;
    font-size: clamp(32px, 5vw, 52px);
    margin: 0 0 14px;
    letter-spacing: 4px;
    position: relative;
    display: inline-block;
}
.page-head h1::after {
    content: "";
    display: block;
    width: 60px; height: 2px;
    background: linear-gradient(90deg, transparent, var(--c-accent), transparent);
    margin: 18px auto 0;
}
.page-head .page-sub {
    color: var(--c-muted);
    font-size: 15px;
    letter-spacing: 1px;
}

/* ============ 首页 Hero ============ */
.hero {
    text-align: center;
    padding: 88px 24px 64px;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: "意";
    position: absolute;
    top: -40px;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--ff-brand);
    font-size: 360px;
    color: rgba(138, 43, 58, .04);
    pointer-events: none;
    line-height: 1;
    user-select: none;
}
.hero h1 {
    font-family: var(--ff-serif);
    font-weight: 900;
    font-size: clamp(40px, 8vw, 80px);
    margin: 0 0 20px;
    letter-spacing: 8px;
    background: linear-gradient(135deg, var(--c-ink) 0%, var(--c-accent) 60%, #6a1f2c 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
}
.hero .hero-sub {
    font-size: clamp(15px, 2vw, 19px);
    color: var(--c-ink-soft);
    letter-spacing: 4px;
    margin-bottom: 32px;
}
.hero .hero-desc {
    max-width: 560px;
    margin: 0 auto;
    color: var(--c-muted);
    line-height: 1.9;
    font-size: 15px;
}
.hero-meta {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-top: 48px;
    flex-wrap: wrap;
}
.hero-meta .meta-item {
    text-align: center;
}
.hero-meta .num {
    font-family: var(--ff-serif);
    font-size: 30px;
    color: var(--c-accent);
    font-weight: 700;
    line-height: 1;
}
.hero-meta .label {
    font-size: 12px;
    color: var(--c-muted);
    letter-spacing: 2px;
    margin-top: 6px;
}

/* ============ 文章卡片 ============ */
.post-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}
.post-card {
    background: var(--c-card);
    border: 1px solid var(--c-line-soft);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease);
    position: relative;
}
.post-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2);
    border-color: var(--c-accent-soft);
}
.post-card .card-cover {
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, var(--c-accent-bg), var(--c-bg-soft));
    display: grid;
    place-items: center;
    position: relative;
    overflow: hidden;
}
.post-card .card-cover img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform .4s var(--ease);
}
.post-card:hover .card-cover img { transform: scale(1.05); }
.post-card .card-cover .placeholder {
    font-family: var(--ff-brand);
    font-size: 60px;
    color: rgba(138, 43, 58, .35);
}
.post-card .card-body {
    padding: 22px 22px 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.post-card .card-date {
    font-size: 12px;
    color: var(--c-muted);
    letter-spacing: 1px;
    margin-bottom: 10px;
}
.post-card h2 {
    font-family: var(--ff-serif);
    font-size: 20px;
    line-height: 1.4;
    margin: 0 0 12px;
    letter-spacing: 1px;
}
.post-card h2 a { color: var(--c-ink); }
.post-card h2 a:hover { color: var(--c-accent); }
.post-card .card-excerpt {
    color: var(--c-ink-soft);
    font-size: 14px;
    line-height: 1.8;
    flex: 1;
    margin: 0 0 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.post-card .card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    color: var(--c-muted);
}
.post-card .card-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tag-chip {
    background: var(--c-bg-soft);
    color: var(--c-ink-soft);
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 11px;
    letter-spacing: .5px;
    transition: background .2s var(--ease), color .2s var(--ease);
}
.tag-chip:hover { background: var(--c-accent-bg); color: var(--c-accent); }
.read-more {
    color: var(--c-accent);
    font-size: 13px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap .2s var(--ease);
}
.read-more:hover { gap: 8px; }

/* ============ 分页 ============ */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-top: 56px;
    flex-wrap: wrap;
}
.pagination a,
.pagination span {
    padding: 8px 18px;
    border-radius: 999px;
    font-size: 14px;
    transition: background .2s var(--ease), color .2s var(--ease);
}
.pagination a {
    background: var(--c-card);
    border: 1px solid var(--c-line);
    color: var(--c-ink-soft);
}
.pagination a:hover {
    background: var(--c-accent);
    color: #fff;
    border-color: var(--c-accent);
}
.pagination .disabled {
    color: var(--c-muted);
    opacity: .5;
    cursor: not-allowed;
}
.pagination .page-num {
    color: var(--c-muted);
    letter-spacing: 1px;
}

/* ============ 文章详情 ============ */
.article-wrap {
    max-width: var(--reading);
    margin: 0 auto;
}
.article-head {
    text-align: center;
    margin-bottom: 36px;
    padding-bottom: 28px;
    border-bottom: 1px dashed var(--c-line);
}
.article-head .meta-line {
    font-size: 13px;
    color: var(--c-muted);
    letter-spacing: 1px;
    margin-bottom: 16px;
}
.article-head .meta-line .dot { margin: 0 10px; color: var(--c-line); }
.article-head h1 {
    font-family: var(--ff-serif);
    font-size: clamp(28px, 4vw, 38px);
    line-height: 1.4;
    letter-spacing: 2px;
    margin: 0 0 18px;
}
.article-head .tag-list {
    display: flex; justify-content: center; gap: 8px; flex-wrap: wrap;
    margin-top: 16px;
}
.article-cover {
    width: calc(100% + 80px);
    margin-left: -40px;
    margin-right: -40px;
    aspect-ratio: 21/9;
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 40px;
    background: var(--c-bg-soft);
}
.article-cover img { width: 100%; height: 100%; object-fit: cover; }

.article-body {
    font-size: 17px;
    line-height: 2;
    color: var(--c-ink);
    letter-spacing: .4px;
}
.article-body p { margin: 0 0 1.4em; }
.article-body h2,
.article-body h3,
.article-body h4 {
    font-family: var(--ff-serif);
    line-height: 1.5;
    margin: 1.6em 0 .8em;
    letter-spacing: 1px;
}
.article-body h2 { font-size: 26px; padding-bottom: 8px; border-bottom: 1px solid var(--c-line-soft); }
.article-body h2::before {
    content: ""; display: inline-block;
    width: 4px; height: 22px;
    background: var(--c-accent); margin-right: 10px;
    vertical-align: -3px; border-radius: 2px;
}
.article-body h3 { font-size: 21px; }
.article-body h4 { font-size: 18px; }
.article-body a { text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.article-body img {
    border-radius: var(--radius-sm);
    margin: 1.5em auto;
    display: block;
    box-shadow: var(--shadow-1);
}
.article-body blockquote {
    margin: 1.5em 0;
    padding: 16px 20px 16px 24px;
    background: var(--c-bg-soft);
    border-left: 3px solid var(--c-accent);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--c-ink-soft);
    font-style: italic;
}
.article-body blockquote p { margin: .4em 0; }
.article-body ul,
.article-body ol {
    margin: 1em 0 1.4em;
    padding-left: 24px;
}
.article-body li { margin: .5em 0; }
.article-body ul li::marker { color: var(--c-accent); }
.article-body code {
    background: var(--c-bg-soft);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: .9em;
    color: var(--c-accent);
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}
.article-body pre {
    background: #2b2622;
    color: #f5efe6;
    padding: 18px 22px;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    margin: 1.6em 0;
    font-size: 14px;
    line-height: 1.7;
}
.article-body pre code {
    background: transparent;
    color: inherit;
    padding: 0;
    font-size: inherit;
}
.article-body hr {
    border: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--c-line), transparent);
    margin: 2.4em auto;
    position: relative;
}
.article-body hr::before {
    content: "❖";
    position: absolute;
    top: -12px; left: 50%;
    transform: translateX(-50%);
    background: var(--c-bg);
    padding: 0 12px;
    color: var(--c-accent);
    font-size: 14px;
}
.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5em 0;
    font-size: 15px;
}
.article-body th,
.article-body td {
    border: 1px solid var(--c-line);
    padding: 10px 14px;
    text-align: left;
}
.article-body th {
    background: var(--c-bg-soft);
    font-family: var(--ff-serif);
    font-weight: 600;
}

.article-foot {
    margin-top: 48px;
    padding-top: 28px;
    border-top: 1px solid var(--c-line-soft);
}
.article-share {
    text-align: center;
    font-size: 13px;
    color: var(--c-muted);
    letter-spacing: 2px;
}
.article-share::before,
.article-share::after {
    content: " · ";
    color: var(--c-line);
    margin: 0 8px;
}
.article-nav {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    margin-top: 32px;
}
.article-nav a {
    background: var(--c-card);
    border: 1px solid var(--c-line-soft);
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    max-width: 48%;
    transition: all .25s var(--ease);
}
.article-nav a:hover {
    border-color: var(--c-accent-soft);
    transform: translateY(-2px);
    box-shadow: var(--shadow-1);
}
.article-nav .nav-label {
    display: block;
    font-size: 11px;
    color: var(--c-muted);
    letter-spacing: 1px;
    margin-bottom: 4px;
}
.article-nav .nav-title {
    font-family: var(--ff-serif);
    color: var(--c-ink);
    font-size: 15px;
}
.article-nav .next { text-align: right; margin-left: auto; }

/* ============ 归档 ============ */
.archive-group {
    margin-bottom: 48px;
}
.archive-group h2 {
    font-family: var(--ff-serif);
    font-size: 22px;
    color: var(--c-ink-soft);
    margin: 0 0 18px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--c-line-soft);
    letter-spacing: 2px;
}
.archive-group h2 .month-count {
    float: right;
    font-size: 13px;
    color: var(--c-muted);
    letter-spacing: 1px;
    font-family: var(--ff-sans);
}
.archive-list { list-style: none; padding: 0; margin: 0; }
.archive-list li {
    padding: 10px 0;
    border-bottom: 1px dashed var(--c-line-soft);
    display: flex;
    align-items: baseline;
    gap: 20px;
    transition: padding .25s var(--ease);
}
.archive-list li:hover { padding-left: 8px; }
.archive-list .post-date {
    color: var(--c-muted);
    font-size: 13px;
    font-family: "SFMono-Regular", monospace;
    flex-shrink: 0;
    width: 110px;
    letter-spacing: 1px;
}
.archive-list .post-title {
    color: var(--c-ink);
    flex: 1;
}
.archive-list .post-title:hover { color: var(--c-accent); }

/* ============ 标签云 ============ */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
    max-width: 720px;
    margin: 0 auto;
}
.tag-cloud a {
    background: var(--c-card);
    border: 1px solid var(--c-line-soft);
    padding: 8px 18px;
    border-radius: 999px;
    color: var(--c-ink-soft);
    font-size: 15px;
    transition: all .2s var(--ease);
}
.tag-cloud a:hover {
    background: var(--c-accent);
    color: #fff;
    border-color: var(--c-accent);
    transform: translateY(-2px);
}
.tag-cloud .tag-count {
    font-size: 12px;
    color: var(--c-muted);
    margin-left: 6px;
}
.tag-cloud a:hover .tag-count { color: rgba(255,255,255,.7); }
.tag-cloud .size-1 { font-size: 14px; }
.tag-cloud .size-2 { font-size: 16px; }
.tag-cloud .size-3 { font-size: 18px; }
.tag-cloud .size-4 { font-size: 22px; font-family: var(--ff-serif); }

/* ============ 关于页 ============ */
.about-wrap {
    max-width: var(--reading);
    margin: 0 auto;
    background: var(--c-card);
    padding: 48px;
    border-radius: var(--radius);
    border: 1px solid var(--c-line-soft);
    box-shadow: var(--shadow-1);
}
.about-wrap h2 {
    font-family: var(--ff-serif);
    color: var(--c-accent);
    font-size: 22px;
    margin: 32px 0 12px;
    letter-spacing: 2px;
}
.about-wrap h2:first-child { margin-top: 0; }
.about-wrap p {
    line-height: 2;
    color: var(--c-ink);
    margin: 0 0 1em;
}
.about-quote {
    text-align: center;
    font-family: var(--ff-serif);
    font-style: italic;
    color: var(--c-ink-soft);
    font-size: 18px;
    padding: 24px;
    border-top: 1px dashed var(--c-line);
    border-bottom: 1px dashed var(--c-line);
    margin: 32px 0;
    position: relative;
}
.about-quote::before {
    content: "“";
    font-size: 60px;
    color: var(--c-accent);
    opacity: .25;
    position: absolute;
    top: -10px; left: 50%;
    transform: translateX(-50%);
    font-family: var(--ff-serif);
}

/* ============ 空状态 ============ */
.empty-state {
    text-align: center;
    padding: 64px 24px;
    color: var(--c-muted);
}
.empty-state .icon {
    font-family: var(--ff-brand);
    font-size: 80px;
    color: rgba(138, 43, 58, .2);
    margin-bottom: 16px;
}
.empty-state h3 {
    font-family: var(--ff-serif);
    color: var(--c-ink-soft);
    margin: 0 0 8px;
}

/* ============ 404 ============ */
.error-page {
    text-align: center;
    padding: 80px 24px;
}
.error-page .error-code {
    font-family: var(--ff-serif);
    font-size: 120px;
    font-weight: 900;
    color: var(--c-accent);
    line-height: 1;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--c-accent), var(--c-gold));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.error-page h1 {
    font-family: var(--ff-serif);
    margin: 0 0 16px;
    color: var(--c-ink);
}
.error-page p { color: var(--c-muted); margin: 0 0 28px; }
.btn {
    display: inline-block;
    padding: 12px 28px;
    background: var(--c-accent);
    color: #fff !important;
    border-radius: 999px;
    font-size: 15px;
    letter-spacing: 1px;
    transition: all .25s var(--ease);
    border: 0;
    cursor: pointer;
    font-family: inherit;
}
.btn:hover {
    background: #6a1f2c;
    transform: translateY(-2px);
    box-shadow: var(--shadow-2);
}
.btn.outline {
    background: transparent;
    color: var(--c-ink) !important;
    border: 1px solid var(--c-line);
}
.btn.outline:hover {
    background: var(--c-bg-soft);
    box-shadow: none;
}

/* ============ 页脚 ============ */
.site-footer {
    background: linear-gradient(180deg, transparent 0%, rgba(217, 205, 184, .15) 100%);
    border-top: 1px solid var(--c-line-soft);
    padding: 48px 0 36px;
    margin-top: 32px;
}
.footer-inner {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 32px;
    align-items: center;
}
.footer-brand {
    display: flex;
    align-items: center;
    gap: 14px;
}
.footer-brand-mark {
    width: 36px; height: 36px;
    background: var(--c-accent);
    color: #fff;
    display: grid; place-items: center;
    font-family: var(--ff-brand);
    font-size: 24px;
    border-radius: 8px;
    transform: rotate(-2deg);
}
.footer-name {
    font-family: var(--ff-serif);
    font-weight: 700;
    color: var(--c-ink);
    letter-spacing: 2px;
    margin: 0;
}
.footer-tagline {
    font-size: 12px;
    color: var(--c-muted);
    margin: 2px 0 0;
}
.footer-nav {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}
.footer-nav a { color: var(--c-ink-soft); font-size: 14px; }
.footer-meta {
    text-align: right;
    font-size: 12px;
    color: var(--c-muted);
    line-height: 1.8;
}
.footer-meta p { margin: 0; }
.footer-domain a { color: var(--c-muted); }
.footer-domain a:hover { color: var(--c-accent); }
.icp-link {
    color: var(--c-muted);
    transition: color .2s var(--ease);
}
.icp-link:hover { color: var(--c-accent); }

/* ============ 回到顶部 ============ */
.to-top {
    position: fixed;
    right: 28px; bottom: 28px;
    width: 44px; height: 44px;
    background: var(--c-accent);
    color: #fff;
    border: 0;
    border-radius: 50%;
    cursor: pointer;
    display: grid; place-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity .3s var(--ease), transform .25s var(--ease), background .2s var(--ease);
    box-shadow: var(--shadow-2);
    z-index: 50;
}
.to-top.show { opacity: 1; pointer-events: auto; }
.to-top:hover { transform: translateY(-3px); background: #6a1f2c; }

/* ============ 响应式 ============ */
@media (max-width: 860px) {
    .post-list { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr; text-align: center; }
    .footer-meta { text-align: center; }
    .footer-brand { justify-content: center; }
    .article-cover {
        width: 100%;
        margin-left: 0;
        margin-right: 0;
    }
}
@media (max-width: 640px) {
    .nav-toggle { display: flex; }
    .site-nav {
        position: absolute;
        top: 72px; left: 0; right: 0;
        flex-direction: column;
        background: var(--c-bg);
        border-bottom: 1px solid var(--c-line);
        padding: 12px 24px;
        gap: 4px;
        transform: translateY(-110%);
        opacity: 0;
        pointer-events: none;
        transition: transform .3s var(--ease), opacity .3s var(--ease);
    }
    .site-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
    .site-nav a { padding: 10px 14px; }

    .hero { padding: 56px 16px 40px; }
    .hero-meta { gap: 24px; }

    .about-wrap { padding: 28px 20px; }

    .article-head .meta-line .dot { display: block; height: 6px; }

    .article-nav { flex-direction: column; }
    .article-nav a { max-width: 100%; }

    .archive-list .post-date { width: auto; }
    .archive-list li { flex-direction: column; gap: 4px; }
}

@media print {
    .site-header, .site-footer, .to-top, .article-share, .article-nav { display: none; }
    body { background: #fff; }
}

/* ============ 原版下载页 ============ */
.dl-disclaimer {
    max-width: 760px;
    margin: 0 auto 28px;
    padding: 22px 28px;
    background: var(--c-card);
    border: 1px solid var(--c-line-soft);
    border-left: 3px solid var(--c-accent);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-1);
}
.dl-disclaimer p {
    margin: 0 0 .6em;
    line-height: 1.9;
    color: var(--c-ink-soft);
    font-size: 14px;
}
.dl-disclaimer p:last-child { margin-bottom: 0; }
.dl-disclaimer a { color: var(--c-accent); }

.dl-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 28px;
    max-width: 1080px;
    margin: 0 auto;
    align-items: start;
}

/* —— 左侧栏：分类按钮 + 子类列表 —— */
.dl-side {
    position: sticky;
    top: 88px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 14px;
    background: var(--c-card);
    border: 1px solid var(--c-line-soft);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-1);
}
.dl-cats { display: flex; flex-direction: column; gap: 5px; }
.dl-catbtn {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px 14px;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--c-ink-soft);
    font-size: 14px;
    font-family: var(--ff-sans);
    text-align: left;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all .2s var(--ease);
}
.dl-catbtn:hover { background: var(--c-accent-bg); color: var(--c-accent); }
.dl-catbtn.active {
    background: var(--c-accent);
    border-color: var(--c-accent);
    color: #fff;
    box-shadow: 0 2px 8px rgba(138, 43, 58, .28);
}
.dl-catname { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.dl-catbadge {
    flex-shrink: 0;
    min-width: 28px;
    padding: 1px 7px;
    border-radius: 999px;
    background: var(--c-bg-soft);
    color: var(--c-muted);
    font-size: 11.5px;
    text-align: center;
    letter-spacing: 0;
}
.dl-catbtn:hover .dl-catbadge { background: #fff; color: var(--c-accent); }
.dl-catbtn.active .dl-catbadge { background: rgba(255, 255, 255, .22); color: #fff; }

.dl-subarea { display: flex; flex-direction: column; gap: 8px; }
.dl-sublabel {
    font-size: 12px;
    color: var(--c-muted);
    letter-spacing: 3px;
    padding-bottom: 6px;
    border-bottom: 1px dashed var(--c-line-soft);
}
.dl-sublist {
    display: flex;
    flex-direction: column;
    gap: 2px;
    max-height: 40vh;
    overflow-y: auto;
    padding-right: 4px;
}
.dl-subbtn {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--c-ink-soft);
    font-size: 13px;
    font-family: var(--ff-sans);
    text-align: left;
    cursor: pointer;
    transition: all .15s var(--ease);
}
.dl-subbtn:hover { background: var(--c-accent-bg); color: var(--c-accent); }
.dl-subbtn.active { background: var(--c-accent-bg); color: var(--c-accent); font-weight: 600; }
.dl-subname { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.dl-subcount { flex-shrink: 0; font-size: 11.5px; color: var(--c-muted); }
.dl-subbtn.active .dl-subcount { color: var(--c-accent-soft); }
.dl-subselect { display: none; }

/* —— 右侧主区：搜索 + 语言过滤 + 条目列表 —— */
.dl-main { min-width: 0; }
.dl-toolbar { margin-bottom: 12px; }
.dl-search {
    width: 100%;
    padding: 12px 18px;
    border: 1px solid var(--c-line);
    border-radius: 999px;
    background: var(--c-card);
    color: var(--c-ink);
    font-size: 15px;
    font-family: var(--ff-sans);
    outline: none;
    transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.dl-search:focus {
    border-color: var(--c-accent);
    box-shadow: 0 0 0 3px var(--c-accent-bg);
}
.dl-info {
    margin-bottom: 12px;
    font-size: 13px;
    color: var(--c-muted);
    letter-spacing: .5px;
}

.dl-langbar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}
.dl-langbar[hidden] { display: none; }
.dl-langchip {
    padding: 5px 14px;
    border: 1px solid var(--c-line);
    border-radius: 999px;
    background: var(--c-card);
    color: var(--c-ink-soft);
    font-size: 12.5px;
    font-family: var(--ff-sans);
    letter-spacing: .5px;
    cursor: pointer;
    transition: all .2s var(--ease);
}
.dl-langchip:hover { border-color: var(--c-accent-soft); color: var(--c-accent); }
.dl-langchip.active {
    background: var(--c-accent);
    border-color: var(--c-accent);
    color: #fff;
}

.dl-list {
    background: var(--c-card);
    border: 1px solid var(--c-line-soft);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-1);
    overflow: hidden;
}
.dl-entry { border-bottom: 1px dashed var(--c-line-soft); }
.dl-entry:last-child { border-bottom: none; }
.dl-entry-head {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 13px 18px;
    border: none;
    background: transparent;
    color: var(--c-ink);
    font-size: 14.5px;
    font-family: var(--ff-sans);
    text-align: left;
    cursor: pointer;
    transition: background .2s var(--ease);
}
.dl-entry-head:hover { background: var(--c-accent-bg); }
.dl-entry-arrow {
    flex-shrink: 0;
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--c-accent);
    border-bottom: 2px solid var(--c-accent);
    transform: rotate(-45deg);
    transition: transform .2s var(--ease);
}
.dl-entry.open .dl-entry-arrow { transform: rotate(45deg); }
.dl-entry-name {
    flex: 1;
    min-width: 0;
    font-weight: 600;
    line-height: 1.5;
    word-break: break-word;
}
.dl-entry-path {
    flex-shrink: 0;
    max-width: 260px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 12px;
    color: var(--c-muted);
}
.dl-entry-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.dl-meta-lang {
    padding: 1px 8px;
    border-radius: 999px;
    background: var(--c-accent-bg);
    color: var(--c-accent);
    font-size: 11.5px;
    letter-spacing: .5px;
    white-space: nowrap;
}
.dl-meta-size {
    color: var(--c-gold);
    font-size: 12px;
    font-family: "SFMono-Regular", Consolas, monospace;
    white-space: nowrap;
}

/* —— 展开详情（等宽字体） —— */
.dl-detail {
    display: none;
    padding: 4px 18px 16px 38px;
    background: var(--c-bg-soft);
}
.dl-entry.open .dl-detail { display: block; }
.dl-detail-row {
    display: flex;
    align-items: baseline;
    gap: 12px;
    padding: 7px 0;
    border-bottom: 1px dashed var(--c-line-soft);
    font-size: 13px;
}
.dl-dlabel {
    flex-shrink: 0;
    width: 52px;
    color: var(--c-muted);
    font-size: 12px;
    letter-spacing: 2px;
}
.dl-dval { color: var(--c-ink-soft); }
.dl-mono {
    font-family: "SFMono-Regular", Consolas, "Courier New", monospace;
    font-size: 12.5px;
    color: var(--c-ink-soft);
    word-break: break-all;
}
.dl-sha {
    cursor: pointer;
    border-bottom: 1px dashed var(--c-accent-soft);
    transition: color .2s var(--ease);
}
.dl-sha:hover { color: var(--c-accent); }
.dl-sha.copied { color: #4a7c4e; border-bottom-color: transparent; }
.dl-detail-actions { padding-top: 12px; }

.dl-copy {
    padding: 7px 16px;
    border: 1px solid var(--c-accent);
    background: transparent;
    color: var(--c-accent);
    border-radius: 999px;
    font-size: 12.5px;
    font-family: var(--ff-sans);
    letter-spacing: .5px;
    cursor: pointer;
    transition: all .2s var(--ease);
}
.dl-copy:hover { background: var(--c-accent); color: #fff; }
.dl-copy.copied {
    background: #4a7c4e;
    border-color: #4a7c4e;
    color: #fff;
}

.dl-empty {
    padding: 48px 20px;
    text-align: center;
    color: var(--c-muted);
    font-size: 14px;
    letter-spacing: 1px;
}

.dl-footer-note {
    max-width: 1080px;
    margin: 32px auto 0;
    padding-top: 20px;
    border-top: 1px dashed var(--c-line-soft);
    text-align: center;
    color: var(--c-muted);
    font-size: 13px;
}
.dl-footer-note a { color: var(--c-accent); }

@media (max-width: 860px) {
    .dl-layout { grid-template-columns: 1fr; gap: 18px; }
    .dl-side {
        position: static;
        gap: 12px;
        padding: 12px;
    }
    /* 分类变为顶部横向滚动 chip 行 */
    .dl-cats {
        flex-direction: row;
        gap: 8px;
        overflow-x: auto;
        padding-bottom: 10px;
        border-bottom: 1px dashed var(--c-line-soft);
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    .dl-cats::-webkit-scrollbar { display: none; }
    .dl-catbtn {
        flex-shrink: 0;
        width: auto;
        padding: 7px 14px;
        border-color: var(--c-line-soft);
        background: var(--c-card);
        font-size: 13px;
    }
    .dl-catbtn.active { border-color: var(--c-accent); }
    /* 子类变为下拉框 */
    .dl-sublabel, .dl-sublist { display: none; }
    .dl-subselect {
        display: block;
        width: 100%;
        padding: 10px 12px;
        border: 1px solid var(--c-line);
        border-radius: var(--radius-sm);
        background: var(--c-card);
        color: var(--c-ink);
        font-size: 14px;
        font-family: var(--ff-sans);
    }
    .dl-entry-head { flex-wrap: wrap; }
    .dl-entry-path { display: none; }
    .dl-entry-meta { width: 100%; padding-left: 20px; }
    .dl-detail { padding-left: 18px; }
}

/* ============ 动画 ============ */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}
.fade-up {
    animation: fadeUp .6s var(--ease) both;
}
.fade-up:nth-child(1) { animation-delay: .05s; }
.fade-up:nth-child(2) { animation-delay: .1s; }
.fade-up:nth-child(3) { animation-delay: .15s; }
.fade-up:nth-child(4) { animation-delay: .2s; }
.fade-up:nth-child(5) { animation-delay: .25s; }
.fade-up:nth-child(6) { animation-delay: .3s; }
.fade-up:nth-child(7) { animation-delay: .35s; }
.fade-up:nth-child(8) { animation-delay: .4s; }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ============ 杞欢浠撳簱椤?- 涓嬭浇閾炬帴 ============ */
.sw-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.sw-link {
    display: inline-block;
    padding: 5px 14px;
    background: var(--c-accent-bg);
    color: var(--c-accent);
    border: 1px solid var(--c-accent-soft);
    border-radius: 6px;
    font-size: 13px;
    text-decoration: none;
    transition: all .2s var(--ease);
}
.sw-link:hover {
    background: var(--c-accent);
    color: #fff;
    border-color: var(--c-accent);
}
/* ============ 友情链接（前台首页 · 仅显示 Logo） ============ */
.friend-links-section {
    margin-top: 72px;
    padding-top: 8px;
}
.friend-links {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
    gap: 16px;
}
.friend-link-card {
    display: grid;
    place-items: center;
    padding: 18px 12px;
    background: var(--c-bg-soft);
    border: 1px solid var(--c-line-soft);
    border-radius: 10px;
    text-decoration: none;
    color: var(--c-ink);
    transition: all .25s var(--ease);
}
.friend-link-card:hover {
    transform: translateY(-3px);
    border-color: var(--c-accent-soft);
    box-shadow: var(--shadow-2);
    color: var(--c-accent);
}
.friend-link-logo {
    width: 44px;
    height: 44px;
    object-fit: contain;
    border-radius: 8px;
    background: #fff;
}
.friend-link-mark {
    width: 44px; height: 44px;
    background: var(--c-accent);
    color: #fff;
    display: grid;
    place-items: center;
    font-family: var(--ff-brand);
    font-size: 22px;
    border-radius: 8px;
}
@media (max-width: 860px) {
    .friend-links { grid-template-columns: repeat(3, 1fr); }
}
/* ============ 给未来写封信 / 时光信箱 ============ */
.letter-page { max-width: 760px; }

/* 信封装饰 */
.letter-envelope {
    position: relative;
    margin: -20px auto 36px;
    max-width: 420px;
    height: 96px;
    background: linear-gradient(135deg, rgba(217, 205, 184, .35), rgba(217, 205, 184, .12));
    border: 1px solid var(--c-line-soft);
    border-radius: 10px;
    overflow: hidden;
}
.letter-envelope::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(to right bottom, transparent 49.6%, var(--c-line-soft) 49.6%, var(--c-line-soft) 50.4%, transparent 50.4%),
        linear-gradient(to left bottom,  transparent 49.6%, var(--c-line-soft) 49.6%, var(--c-line-soft) 50.4%, transparent 50.4%);
    opacity: .6;
}
.letter-envelope .stamp {
    position: absolute;
    right: 16px; top: 16px;
    width: 46px; height: 54px;
    background: var(--c-accent);
    color: #fff;
    display: grid; place-items: center;
    font-family: var(--ff-brand);
    font-size: 28px;
    border-radius: 6px;
    transform: rotate(3deg);
    box-shadow: var(--shadow-1);
}
.letter-envelope .postmark {
    position: absolute;
    right: 70px; top: 26px;
    font-family: monospace;
    font-size: 12px;
    color: var(--c-muted);
    border: 1.5px dashed var(--c-muted);
    border-radius: 50%;
    padding: 8px 6px;
    transform: rotate(-8deg);
    opacity: .75;
}

/* 表单 */
.letter-form {
    background: var(--c-bg-soft);
    border: 1px solid var(--c-line-soft);
    border-radius: 12px;
    padding: 32px 34px;
}
.letter-field { margin-bottom: 22px; }
.letter-field:last-child { margin-bottom: 0; }
.letter-field label {
    display: block;
    font-size: 14px;
    color: var(--c-ink);
    margin-bottom: 8px;
    letter-spacing: 1px;
}
.letter-field input[type="text"],
.letter-field input[type="email"],
.letter-field input[type="number"],
.letter-field input[type="datetime-local"],
.letter-field textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--c-line);
    border-radius: 8px;
    background: #fff;
    font-size: 14px;
    font-family: var(--ff-body);
    color: var(--c-ink);
    transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.letter-field textarea {
    /* 信纸横线效果 */
    background-image: repeating-linear-gradient(
        transparent, transparent 27px,
        rgba(138, 43, 58, .06) 27px, rgba(138, 43, 58, .06) 28px
    );
    line-height: 28px;
    resize: vertical;
    min-height: 200px;
}
.letter-field input:focus,
.letter-field textarea:focus {
    outline: none;
    border-color: var(--c-accent);
    box-shadow: 0 0 0 3px var(--c-accent-bg);
}
.letter-field small {
    display: block;
    margin-top: 6px;
    font-size: 12px;
    color: var(--c-muted);
}
.letter-field-captcha input { width: 140px; }
.letter-field-inline label { margin-bottom: 0; }

/* 公开开关 */
.letter-switch {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    user-select: none;
}
.letter-switch input { display: none; }
.letter-switch-track {
    width: 42px; height: 24px;
    background: #cfc6b8;
    border-radius: 12px;
    position: relative;
    transition: background .2s var(--ease);
    flex-shrink: 0;
}
.letter-switch-track::after {
    content: "";
    position: absolute;
    top: 3px; left: 3px;
    width: 18px; height: 18px;
    background: #fff;
    border-radius: 50%;
    transition: transform .2s var(--ease);
    box-shadow: 0 1px 3px rgba(0,0,0,.2);
}
.letter-switch input:checked + .letter-switch-track { background: var(--c-accent); }
.letter-switch input:checked + .letter-switch-track::after { transform: translateX(18px); }
.letter-switch-text {
    font-size: 13px;
    color: var(--c-ink-soft);
    line-height: 1.6;
}
.letter-actions { margin-top: 26px; text-align: center; }
.letter-submit {
    padding: 12px 44px;
    font-size: 15px;
    letter-spacing: 2px;
}

/* 表单错误 */
.letter-errors {
    background: #f7e9eb;
    border: 1px solid #e5c2c7;
    color: #8a2b3a;
    border-radius: 10px;
    padding: 14px 20px;
    margin-bottom: 22px;
}
.letter-errors p { margin: 4px 0; font-size: 14px; }

/* 寄出成功 */
.letter-sent {
    text-align: center;
    background: var(--c-bg-soft);
    border: 1px solid var(--c-line-soft);
    border-radius: 12px;
    padding: 44px 32px;
}
.letter-sent-seal {
    width: 64px; height: 64px;
    margin: 0 auto 18px;
    background: var(--c-accent);
    color: #fff;
    display: grid; place-items: center;
    font-family: var(--ff-brand);
    font-size: 32px;
    border-radius: 50%;
    transform: rotate(-6deg);
    box-shadow: var(--shadow-2);
}
.letter-sent h2 {
    font-family: var(--ff-serif);
    font-size: 22px;
    margin: 0 0 10px;
    color: var(--c-ink);
}
.letter-sent-meta {
    color: var(--c-ink-soft);
    font-size: 14px;
    margin: 0 0 22px;
}
.letter-sent-token {
    max-width: 560px;
    margin: 0 auto 22px;
    text-align: left;
    background: #fff;
    border: 1px dashed var(--c-accent-soft);
    border-radius: 10px;
    padding: 14px 18px;
}
.letter-sent-token p {
    margin: 0 0 8px;
    font-size: 13px;
    color: var(--c-ink-soft);
}
.letter-sent-token input {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--c-line);
    border-radius: 6px;
    font-size: 12px;
    font-family: monospace;
    color: var(--c-ink);
    background: var(--c-bg-soft);
}
.letter-sent-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}
.letter-note {
    margin-top: 22px;
    text-align: center;
    font-size: 12px;
    color: var(--c-muted);
    line-height: 1.8;
}
.letter-note a { color: var(--c-accent); }

/* —— 时光信箱信墙 —— */
.letters-page { max-width: 760px; }
.letter-token-tip {
    text-align: center;
    font-size: 14px;
    color: var(--c-ink-soft);
    background: var(--c-accent-bg);
    border: 1px dashed var(--c-accent-soft);
    border-radius: 10px;
    padding: 12px 18px;
    margin-bottom: 26px;
}
.letter-token-invalid {
    background: #f7e9eb;
    border-color: #e5c2c7;
    color: #8a2b3a;
}
.letters-wall-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin: 0 0 22px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--c-line-soft);
}
.letters-wall-head p {
    margin: 0;
    font-size: 14px;
    color: var(--c-muted);
}
.letters-wall {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

/* 信卡片 */
.letter-card {
    background: var(--c-bg-soft);
    border: 1px solid var(--c-line-soft);
    border-radius: 12px;
    padding: 22px 26px;
    transition: all .25s var(--ease);
}
.letter-card:hover {
    border-color: var(--c-accent-soft);
    box-shadow: var(--shadow-1);
}
.letter-card-head {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}
.letter-card-mark {
    width: 40px; height: 40px;
    flex-shrink: 0;
    display: grid; place-items: center;
    font-family: var(--ff-brand);
    font-size: 22px;
    border-radius: 8px;
}
.letter-sealed .letter-card-mark {
    background: #d9cdb8;
    color: #6d5f4b;
    transform: rotate(-3deg);
}
.letter-opened .letter-card-mark {
    background: var(--c-accent);
    color: #fff;
    transform: rotate(3deg);
}
.letter-card-title {
    font-family: var(--ff-serif);
    font-size: 17px;
    font-weight: 700;
    margin: 0 0 4px;
    color: var(--c-ink);
}
.letter-card-meta {
    margin: 0;
    font-size: 12px;
    color: var(--c-muted);
}
.letter-card-body {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px dashed var(--c-line-soft);
    font-size: 14px;
    line-height: 2;
    color: var(--c-ink-soft);
    /* 信纸横线效果 */
    background-image: repeating-linear-gradient(
        transparent, transparent 27px,
        rgba(138, 43, 58, .05) 27px, rgba(138, 43, 58, .05) 28px
    );
    line-height: 28px;
    word-break: break-word;
}
.letter-card-sealed-note {
    margin-top: 14px;
    font-size: 13px;
    color: var(--c-muted);
    font-style: italic;
}
.letter-card-sealed-note p { margin: 0; }

@media (max-width: 640px) {
    .letter-form { padding: 22px 18px; }
    .letter-envelope { max-width: 100%; }
    .letters-wall-head { flex-direction: column; align-items: flex-start; }
}
/* ============ 给未来写封信 · 信纸样式 ============ */
.page-letter { /* body 级不再限宽，居中交给 .letter-page */ }

/* —— 信纸本体 —— */
.letter-paper {
    position: relative;
    margin-top: 32px;
    padding: 36px 48px 40px;
    background: #fbf7f1;
    background-image:
        radial-gradient(circle at 10% 5%, rgba(138, 43, 58, .04), transparent 40%),
        radial-gradient(circle at 90% 95%, rgba(138, 43, 58, .03), transparent 40%);
    border-radius: 4px;
    box-shadow:
        0 1px 3px rgba(0,0,0,.04),
        0 12px 36px -12px rgba(138,43,58,.18),
        inset 0 0 0 1px rgba(138,43,58,.06);
    overflow: hidden;
}
/* 红色横线（信纸线） */
.letter-paper-lines {
    position: absolute;
    inset: 80px 0 80px 0;
    background-image: repeating-linear-gradient(
        transparent,
        transparent 31px,
        rgba(138, 43, 58, .18) 31px,
        rgba(138, 43, 58, .18) 32px
    );
    pointer-events: none;
    z-index: 0;
}
/* 左侧装订红竖线 */
.letter-paper-margin {
    position: absolute;
    top: 0; bottom: 0;
    left: 72px;
    width: 1px;
    background: rgba(138, 43, 58, .22);
    pointer-events: none;
    z-index: 0;
}

/* —— 信封头 —— */
.letter-head {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding-bottom: 14px;
    border-bottom: 1px solid rgba(138, 43, 58, .2);
    margin-bottom: 22px;
}
.letter-from-label {
    display: block;
    font-size: 11px;
    color: var(--c-muted);
    letter-spacing: 4px;
    margin-bottom: 4px;
}
.letter-from-name {
    font-family: var(--ff-brand);
    font-size: 20px;
    color: var(--c-accent);
    letter-spacing: 2px;
}
.letter-date {
    font-family: "Ma Shan Zheng", "Noto Serif SC", serif;
    font-size: 28px;
    color: rgba(138, 43, 58, .75);
    letter-spacing: 1px;
    transform: rotate(-1deg);
}

/* —— 写信抬头（寄往 / 亲爱的） —— */
.letter-dear {
    position: relative;
    z-index: 1;
    margin-bottom: 6px;
}
.letter-dear-row,
.letter-dear-name {
    display: flex;
    align-items: baseline;
    gap: 6px;
    margin-bottom: 4px;
    font-family: var(--ff-serif);
}
.letter-label-light {
    font-size: 13px;
    color: var(--c-muted);
    letter-spacing: 2px;
    flex-shrink: 0;
}
.letter-tip {
    font-size: 11px;
    color: var(--c-muted);
    margin-left: 6px;
}
.letter-punct {
    font-family: var(--ff-serif);
    font-size: 16px;
    color: var(--c-ink);
    margin-left: -2px;
}
.letter-input-inline {
    border: none;
    background: transparent;
    border-bottom: 1px dashed rgba(138, 43, 58, .35);
    padding: 2px 6px;
    font-size: 14px;
    font-family: var(--ff-serif);
    color: var(--c-ink);
    outline: none;
    width: 200px;
    transition: border-color .2s var(--ease);
}
.letter-input-inline:focus {
    border-bottom-color: var(--c-accent);
    border-bottom-style: solid;
}
.letter-title-input {
    width: 320px;
    font-size: 17px;
    font-weight: 700;
    font-family: var(--ff-serif);
    color: var(--c-accent);
}

/* —— 信纸正文（透明叠在红线上） —— */
.letter-body-wrap {
    position: relative;
    z-index: 1;
    margin-top: 12px;
    margin-left: 48px;   /* 避开装订红竖线 */
}
.letter-textarea {
    width: 100%;
    min-height: 220px;
    border: none;
    background: transparent;
    padding: 0;
    font-family: "Noto Serif SC", "PingFang SC", serif;
    font-size: 16px;
    line-height: 32px;   /* 与红线对齐 */
    color: var(--c-ink);
    resize: vertical;
    outline: none;
    caret-color: var(--c-accent);
}
.letter-textarea::placeholder {
    color: rgba(138, 43, 58, .25);
    font-style: italic;
}
.letter-chars {
    position: absolute;
    right: 0;
    bottom: -22px;
    font-size: 11px;
    color: var(--c-muted);
}

/* —— 落款 —— */
.letter-sign {
    position: relative;
    z-index: 1;
    margin-top: 28px;
    margin-left: 48px;
    padding-bottom: 12px;
}
.letter-sign-row {
    display: flex;
    align-items: baseline;
    gap: 8px;
    font-family: var(--ff-serif);
}
.letter-sign-me {
    font-family: "Ma Shan Zheng", "Noto Serif SC", serif;
    font-size: 22px;
    color: var(--c-accent);
    transform: rotate(-3deg);
}

/* —— 底部附加区 —— */
.letter-extras {
    position: relative;
    z-index: 1;
    margin-top: 20px;
    padding-top: 18px;
    border-top: 1px dashed rgba(138, 43, 58, .15);
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.letter-extra-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: var(--c-ink-soft);
}
.letter-extra-label {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--c-muted);
    letter-spacing: 1px;
}
.letter-extra-label input[type="checkbox"] {
    accent-color: var(--c-accent);
}
.letter-extra-input {
    border: 1px solid rgba(138, 43, 58, .18);
    background: rgba(255,255,255,.55);
    border-radius: 4px;
    padding: 4px 10px;
    font-size: 13px;
    color: var(--c-ink);
    width: 220px;
    outline: none;
    transition: border-color .2s var(--ease);
}
.letter-extra-input:focus {
    border-color: var(--c-accent);
    background: #fff;
}
.letter-captcha-q {
    font-family: monospace;
    color: var(--c-accent);
}
.letter-captcha-input {
    width: 90px;
}
.letter-tip-sm {
    font-size: 11px;
    color: var(--c-muted);
}

/* —— 封口印章按钮 —— */
.letter-seal-btn {
    position: absolute;
    right: 32px;
    bottom: 28px;
    z-index: 2;
    width: 76px;
    height: 76px;
    border-radius: 50%;
    border: 3px solid var(--c-accent);
    background: #fff;
    cursor: pointer;
    display: grid;
    place-items: center;
    transition: transform .2s var(--ease), background .2s var(--ease);
    font-family: "Ma Shan Zheng", var(--ff-serif);
    font-size: 26px;
    color: var(--c-accent);
    box-shadow: 0 4px 16px rgba(138,43,58,.2);
    transform: rotate(-8deg);
}
.letter-seal-btn:hover {
    background: var(--c-accent);
    color: #fff;
    transform: rotate(-6deg) scale(1.05);
    box-shadow: 0 6px 22px rgba(138,43,58,.35);
}
.letter-seal-btn:active {
    transform: rotate(-8deg) scale(.97);
}
.letter-seal-text {
    display: block;
    position: absolute;
    bottom: -18px;
    font-size: 11px;
    color: var(--c-accent);
    letter-spacing: 3px;
    font-family: var(--ff-body);
}

/* —— 错误条 —— */
.letter-errors {
    background: #f7e9eb;
    border: 1px solid #e5c2c7;
    color: #8a2b3a;
    border-radius: 6px;
    padding: 12px 18px;
    margin-bottom: 18px;
    font-size: 13px;
    line-height: 1.8;
}
.letter-errors p { margin: 0; }

/* —— 寄出成功 —— */
.letter-sent {
    text-align: center;
    margin-top: 32px;
    padding: 48px 32px 44px;
    background: #fbf7f1;
    border: 1px solid rgba(138, 43, 58, .15);
    border-radius: 4px;
    box-shadow: 0 12px 36px -12px rgba(138,43,58,.18);
    position: relative;
}
.letter-sent::before,
.letter-sent::after {
    content: "";
    position: absolute;
    width: 32px;
    height: 32px;
    border: 1px solid rgba(138, 43, 58, .15);
    background: #fff;
}
.letter-sent::before { top: -8px; left: -8px; transform: rotate(45deg); }
.letter-sent::after  { bottom: -8px; right: -8px; transform: rotate(45deg); }
.letter-sent-seal {
    width: 68px; height: 68px;
    margin: 0 auto 18px;
    border-radius: 50%;
    border: 3px solid var(--c-accent);
    background: #fff;
    display: grid; place-items: center;
    font-family: "Ma Shan Zheng", var(--ff-serif);
    font-size: 30px;
    color: var(--c-accent);
    transform: rotate(-10deg);
    box-shadow: 0 4px 14px rgba(138,43,58,.2);
}
.letter-sent h2 {
    font-family: var(--ff-serif);
    font-size: 20px;
    margin: 0 0 10px;
    color: var(--c-ink);
}
.letter-sent-meta {
    color: var(--c-ink-soft);
    font-size: 14px;
    margin: 0 0 22px;
}
.letter-sent-token {
    max-width: 520px;
    margin: 0 auto 22px;
    text-align: left;
    background: #fff;
    border: 1px dashed rgba(138, 43, 58, .3);
    border-radius: 4px;
    padding: 14px 18px;
}
.letter-sent-token p {
    margin: 0 0 8px;
    font-size: 12px;
    color: var(--c-ink-soft);
}
.letter-sent-token input {
    width: 100%;
    padding: 6px 8px;
    border: 1px solid rgba(138, 43, 58, .12);
    border-radius: 4px;
    font-size: 12px;
    font-family: monospace;
    color: var(--c-ink);
    background: #fbf7f1;
}
.letter-sent-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* —— 说明 —— */
.letter-note {
    margin-top: 28px;
    text-align: center;
    font-size: 12px;
    color: var(--c-muted);
    line-height: 1.8;
}
.letter-note a { color: var(--c-accent); }

/* —— 响应式 —— */
@media (max-width: 640px) {
    .letter-paper { padding: 24px 22px 70px; }
    .letter-paper-margin { left: 40px; }
    .letter-dear-row, .letter-dear-name { flex-wrap: wrap; }
    .letter-title-input, .letter-input-inline { width: 100%; }
    .letter-body-wrap { margin-left: 32px; }
    .letter-seal-btn { right: 20px; bottom: 18px; width: 60px; height: 60px; font-size: 22px; }
}
/* ============ 原版下载 · 卡片网格 + 详情抽屉 ============ */
.dl-page .dl-toolbar {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 18px;
}
.dl-page .dl-search { flex: 1; min-width: 0; }

.dl-viewswitch {
    display: inline-flex;
    background: var(--c-bg-soft);
    border: 1px solid var(--c-line-soft);
    border-radius: 8px;
    padding: 3px;
    flex-shrink: 0;
}
.dl-vs-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 14px;
    border: none;
    background: transparent;
    color: var(--c-ink-soft);
    font-size: 13px;
    border-radius: 6px;
    cursor: pointer;
    transition: all .2s var(--ease);
}
.dl-vs-btn:hover { color: var(--c-accent); }
.dl-vs-btn.active {
    background: #fff;
    color: var(--c-accent);
    box-shadow: 0 1px 4px rgba(0,0,0,.06);
}

/* —— 卡片网格视图 —— */
.dl-list--grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
    padding: 4px 2px 12px;
}
.dl-list--list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.dl-card {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    text-align: left;
    background: #fff;
    border: 1px solid var(--c-line-soft);
    border-radius: 10px;
    padding: 18px 16px 18px 18px;
    cursor: pointer;
    transition: all .22s var(--ease);
    font: inherit;
    color: inherit;
    box-shadow: 0 1px 2px rgba(0,0,0,.02);
}
.dl-card:hover {
    transform: translateY(-2px);
    border-color: var(--c-accent-soft);
    box-shadow: 0 8px 24px -10px rgba(138,43,58,.25);
}
.dl-card-icon {
    flex-shrink: 0;
    width: 64px; height: 64px;
    display: grid;
    place-items: center;
    background: var(--c-bg-soft);
    border-radius: 12px;
}
.dl-card-icon .dl-svg { display: block; }
.dl-card-body { min-width: 0; flex: 1; }
.dl-card-title {
    margin: 0 0 6px;
    font-family: var(--ff-serif);
    font-size: 15px;
    font-weight: 700;
    color: var(--c-ink);
    line-height: 1.35;
    /* 最多两行 */
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.dl-card-sample {
    margin: 0 0 8px;
    font-size: 12px;
    color: var(--c-muted);
    line-height: 1.5;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.dl-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 12px;
    color: var(--c-ink-soft);
}
.dl-card-meta span { white-space: nowrap; }

/* —— 详情抽屉 —— */
.dl-drawer {
    position: fixed;
    inset: 0;
    z-index: 90;
    pointer-events: none;
}
.dl-drawer.is-open { pointer-events: auto; }
.dl-drawer-mask {
    position: absolute;
    inset: 0;
    background: rgba(22, 18, 18, .48);
    opacity: 0;
    transition: opacity .25s var(--ease);
}
.dl-drawer.is-open .dl-drawer-mask { opacity: 1; }

.dl-drawer-panel {
    position: absolute;
    top: 0; right: 0; bottom: 0;
    width: min(820px, 94vw);
    background: #fbf7f1;
    box-shadow: -12px 0 40px rgba(0,0,0,.25);
    transform: translateX(100%);
    transition: transform .3s var(--ease);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border-left: 1px solid rgba(138,43,58,.15);
}
.dl-drawer.is-open .dl-drawer-panel { transform: translateX(0); }

.dl-drawer-close {
    position: absolute;
    top: 14px; right: 14px;
    z-index: 5;
    width: 36px; height: 36px;
    display: grid; place-items: center;
    background: #fff;
    border: 1px solid var(--c-line-soft);
    border-radius: 50%;
    cursor: pointer;
    color: var(--c-ink-soft);
    transition: all .2s var(--ease);
    box-shadow: 0 2px 6px rgba(0,0,0,.06);
}
.dl-drawer-close:hover { color: var(--c-accent); border-color: var(--c-accent-soft); transform: rotate(90deg); }

.dl-drawer-hero {
    padding: 36px 36px 24px 40px;
    display: flex;
    gap: 20px;
    align-items: center;
    background: #fff;
    border-bottom: 1px solid rgba(138,43,58,.1);
}
.dl-drawer-icon {
    width: 76px; height: 76px;
    flex-shrink: 0;
    display: grid; place-items: center;
    background: var(--c-bg-soft);
    border-radius: 14px;
    padding: 8px;
}
.dl-drawer-icon .dl-svg { width: 64px; height: 64px; }
.dl-drawer-title h2 {
    margin: 0 0 6px;
    font-family: var(--ff-serif);
    font-size: 22px;
    font-weight: 700;
    color: var(--c-ink);
    line-height: 1.3;
}
.dl-drawer-crumbs {
    margin: 0;
    font-size: 13px;
    color: var(--c-muted);
    letter-spacing: 0;
}

.dl-drawer-summary {
    padding: 22px 40px 20px;
    background: #fff;
    border-bottom: 1px solid rgba(138,43,58,.1);
    position: relative;
}
.dl-drawer-summary > h3 {
    margin: 0 0 14px;
    font-family: var(--ff-serif);
    font-size: 15px;
    color: var(--c-accent);
    letter-spacing: 3px;
    position: relative;
    padding-left: 12px;
}
.dl-drawer-summary > h3::before {
    content: "";
    position: absolute;
    left: 0; top: 4px; bottom: 4px;
    width: 3px;
    background: var(--c-accent);
    border-radius: 2px;
}
.dl-drawer-summary dl {
    display: grid;
    grid-template-columns: 90px 1fr;
    row-gap: 8px;
    column-gap: 16px;
    margin: 0;
    font-size: 14px;
}
.dl-drawer-summary dt {
    color: var(--c-muted);
    letter-spacing: 1px;
    margin: 0;
}
.dl-drawer-summary dd {
    color: var(--c-ink);
    margin: 0;
    font-weight: 500;
    word-break: break-all;
}
.dl-drawer-summary .btn.outline {
    position: absolute;
    right: 32px;
    top: 20px;
}

.dl-drawer-notice {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 16px 32px 0;
    padding: 12px 16px;
    background: #FBF0C4;
    color: #6A4E00;
    font-size: 13px;
    border-radius: 8px;
    line-height: 1.6;
}

.dl-drawer-files {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    padding: 18px 32px 24px;
    min-height: 0;
}
.dl-drawer-files-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}
.dl-drawer-files-head h3 {
    margin: 0;
    font-family: var(--ff-serif);
    font-size: 15px;
    color: var(--c-accent);
    letter-spacing: 3px;
    position: relative;
    padding-left: 12px;
}
.dl-drawer-files-head h3::before {
    content: "";
    position: absolute;
    left: 0; top: 4px; bottom: 4px;
    width: 3px;
    background: var(--c-accent);
    border-radius: 2px;
}
.dl-chk {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--c-ink-soft);
    cursor: pointer;
    user-select: none;
}
.dl-chk input { accent-color: var(--c-accent); }

.dl-drawer-table {
    flex: 1;
    overflow: auto;
    background: #fff;
    border: 1px solid rgba(138,43,58,.12);
    border-radius: 8px;
}
.dl-drawer-table table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    min-width: 700px;
}
.dl-drawer-table thead {
    position: sticky;
    top: 0;
    z-index: 2;
    background: var(--c-accent-bg);
}
.dl-drawer-table thead th {
    text-align: left;
    padding: 10px 12px;
    font-weight: 600;
    color: var(--c-accent);
    font-size: 12px;
    letter-spacing: 1px;
    border-bottom: 1px solid var(--c-accent-soft);
    white-space: nowrap;
}
.dl-drawer-table tbody tr {
    transition: background .15s var(--ease);
}
.dl-drawer-table tbody tr:nth-child(even) { background: #fdf9f4; }
.dl-drawer-table tbody tr:hover { background: #f7e9eb; }
.dl-drawer-table tbody td {
    padding: 10px 12px;
    border-bottom: 1px solid rgba(138,43,58,.06);
    vertical-align: top;
}
.dl-f-name {
    max-width: 380px;
    word-break: break-all;
}
.dl-f-name-line {
    font-family: monospace;
    font-size: 12px;
    line-height: 1.5;
    color: var(--c-ink);
}
.dl-f-name-sub {
    margin-top: 4px;
    font-size: 11px;
    color: var(--c-muted);
    line-height: 1.4;
}
.dl-f-sha {
    margin-top: 6px;
    font-family: monospace;
    font-size: 11px;
    color: var(--c-muted);
    background: var(--c-bg-soft);
    padding: 4px 8px;
    border-radius: 4px;
    word-break: break-all;
}

.dl-linkbtn {
    display: inline-block;
    padding: 4px 10px;
    background: var(--c-accent-bg);
    color: var(--c-accent);
    border: 1px solid var(--c-accent-soft);
    border-radius: 5px;
    font-size: 12px;
    cursor: pointer;
    transition: all .18s var(--ease);
    white-space: nowrap;
}
.dl-linkbtn:hover {
    background: var(--c-accent);
    color: #fff;
    border-color: var(--c-accent);
}
.dl-linkbtn.copied {
    background: #2e8b57;
    color: #fff;
    border-color: #2e8b57;
}
.dl-copy-ed2k {
    background: var(--c-accent);
    color: #fff;
    border-color: var(--c-accent);
}
.dl-copy-ed2k:hover {
    filter: brightness(1.08);
}

/* —— 响应式 —— */
@media (max-width: 760px) {
    .dl-page .dl-toolbar { flex-direction: column; align-items: stretch; }
    .dl-list--grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; }
    .dl-card { padding: 14px 12px; gap: 10px; }
    .dl-card-icon { width: 52px; height: 52px; }
    .dl-card-icon .dl-svg { width: 40px; height: 40px; }
    .dl-drawer-hero { padding: 28px 20px 18px; flex-direction: column; align-items: flex-start; }
    .dl-drawer-summary { padding: 18px 20px; }
    .dl-drawer-summary .btn.outline { position: static; margin-top: 10px; }
    .dl-drawer-files { padding: 14px 20px 20px; }
    .dl-drawer-summary dl { grid-template-columns: 76px 1fr; column-gap: 10px; }
}