:root {
    --paper: #fffdf7;
    --ink: #171717;
    --muted: #5a5a5a;
    --line: #e6dcc8;
    --accent: #005f73;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
}

body {
    font-family: "Segoe UI", "Noto Sans SC", "Microsoft YaHei", sans-serif;
    color: var(--ink);
    background: #f7f2e8;
}

.shell {
    max-width: 900px;
    margin: 0 auto;
    padding: 16px;
}

.card {
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: 12px;
}

.hidden {
    display: none !important;
}

.welcome {
    min-height: calc(100vh - 32px);
    display: grid;
    place-items: center;
}

.welcome-content {
    padding: 40px 20px;
    text-align: center;
}

h1 {
    margin: 0;
    font-size: clamp(32px, 8vw, 56px);
}

.btn {
    margin-top: 24px;
    border: 0;
    border-radius: 999px;
    background: var(--accent);
    color: #fff;
    font-size: 14px;
    padding: 10px 18px;
    cursor: pointer;
}

.blog-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    padding: 12px 14px;
}

.blog-head h2 {
    margin: 0;
    font-size: 20px;
}

.posts-grid {
    display: grid;
    gap: 10px;
}

.post-item {
    width: 100%;
    text-align: left;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--paper);
    padding: 14px;
    cursor: pointer;
    color: inherit;
}

.post-title {
    display: block;
    font-weight: 700;
    margin: 0 0 6px;
}

.post-file {
    margin: 0;
    color: var(--muted);
    font-size: 12px;
}

.article-wrap {
    margin-top: 10px;
    padding: 14px;
}

.article-toolbar {
    margin-bottom: 8px;
}

.link-btn {
    border: 0;
    background: transparent;
    color: var(--accent);
    cursor: pointer;
    font-size: 13px;
    padding: 2px;
}

.article {
    line-height: 1.75;
}

.article h1,
.article h2,
.article h3 {
    margin: 1.2em 0 0.4em;
}

.article ul,
.article ol {
    padding-left: 1.2em;
}

.article p {
    margin: 0 0 1em;
}

.article code {
    background: #f3ead8;
    border-radius: 4px;
    padding: 0.1em 0.35em;
    font-family: Consolas, monospace;
}

.article pre {
    background: #f8f2e6;
    color: #2c2c2c;
    border: 1px solid #e5d5b7;
    border-radius: 8px;
    padding: 10px;
    overflow-x: auto;
}

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

.code-block-light {
    position: relative;
    padding-top: 34px;
}

.code-copy-btn {
    position: absolute;
    top: 6px;
    right: 6px;
    border: 1px solid #d9c59e;
    background: #fff9ed;
    color: #654a22;
    border-radius: 6px;
    font-size: 12px;
    padding: 3px 8px;
    cursor: pointer;
}

.empty {
    color: var(--muted);
    border: 1px dashed #ccb98f;
    border-radius: 8px;
    padding: 12px;
}

@media (max-width: 720px) {
    .welcome-content {
        padding: 28px 14px;
    }
}