/* ============================================================
   迷い星 · MyGO 主题样式
   配色：主题蓝 #3388BB + 深海蓝 + 浅蓝点缀，浅色主题
   ============================================================ */

:root {
  --c-bg: #f4f7fa;
  --c-surface: #ffffff;
  --c-primary: #1e5380;        /* 深海蓝 */
  --c-primary-deep: #163a58;
  --c-accent: #3388BB;         /* 主题蓝 */
  --c-accent-soft: #e2f1fa;
  --c-pink: #5aa7d6;           /* 浅蓝点缀 */
  --c-pink-soft: #e9f4fb;
  --c-text: #23283a;
  --c-text-soft: #5d6479;
  --c-text-faint: #8b92a8;
  --c-border: #e4e8f3;
  --c-hero1: #17405f;
  --c-hero2: #2f6ea0;
  --shadow-card: 0 1px 3px rgba(30, 83, 128, 0.06), 0 8px 24px rgba(30, 83, 128, 0.06);
  --shadow-hover: 0 4px 12px rgba(30, 83, 128, 0.10), 0 14px 34px rgba(30, 83, 128, 0.10);
  --radius: 14px;
  --font-ui: "Noto Sans JP", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
             "Helvetica Neue", Arial, sans-serif;
  --font-display: "Zen Old Mincho", "Noto Serif JP", "Noto Sans JP",
             "STSong", "SimSun", serif;
  --font-read: "Noto Serif JP", "Zen Old Mincho", "PingFang SC",
             "Microsoft YaHei", "STSong", serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-ui);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--c-accent); text-decoration: none; }
a:hover { color: var(--c-primary); }

.container { max-width: 1080px; margin: 0 auto; padding: 0 22px; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--c-border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 62px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--c-primary);
}
.brand-logo {
  width: 26px;
  height: 26px;
  border-radius: 6px;
  object-fit: cover;
  display: inline-block;
  flex-shrink: 0;
  transition: transform 0.35s ease;
}
.brand:hover .brand-logo { transform: rotate(8deg) scale(1.06); }
.brand-name {
  font-family: var(--font-display);
  font-size: 1.22rem;
  font-weight: 700;
  letter-spacing: 1px;
}
.site-nav { display: flex; gap: 6px; }
.nav-link {
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 0.95rem;
  color: var(--c-text-soft);
  transition: all 0.2s ease;
}
.nav-link:hover { color: var(--c-primary); background: var(--c-accent-soft); }
.nav-link.is-active { color: #fff; background: var(--c-primary); }

/* ---------- Hero 星空横幅 ---------- */
.hero {
  position: relative;
  overflow: hidden;
  margin: 26px 0 34px;
  padding: 64px 34px 60px;
  border-radius: 20px;
  text-align: center;
  color: #fff;
  background: linear-gradient(135deg, var(--c-hero1) 0%, var(--c-hero2) 58%, #3388bb 100%);
  box-shadow: var(--shadow-card);
}
.hero::after {
  content: "";
  position: absolute;
  inset: -10%;
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 50% at 18% 12%, rgba(90, 167, 214, 0.30), transparent 60%),
    radial-gradient(ellipse 55% 45% at 85% 88%, rgba(51, 136, 187, 0.45), transparent 62%);
  animation: drift 18s ease-in-out infinite;
}
@keyframes drift {
  0%, 100% { background-position: 18% 12%, 85% 88%; }
  50% { background-position: 24% 18%, 79% 82%; }
}
.hero-stars { position: absolute; inset: 0; pointer-events: none; }
.star {
  position: absolute;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 5px rgba(255, 255, 255, 0.7);
  animation: gentle var(--dur, 5.5s) ease-in-out infinite;
  animation-delay: var(--delay, 0s);
}
.star--blue { background: #a8d4f0; box-shadow: 0 0 7px rgba(168, 212, 240, 0.9); }
.star--pink { background: #f2c9dd; box-shadow: 0 0 7px rgba(242, 201, 221, 0.9); }
@keyframes gentle {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.9; }
}
.hero-eyebrow {
  position: relative;
  font-size: 0.88rem;
  letter-spacing: 3px;
  color: rgba(255, 255, 255, 0.72);
  text-transform: uppercase;
}
.hero-title {
  position: relative;
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-size: 2.9rem;
  font-weight: 700;
  letter-spacing: 6px;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.25);
}
.hero-slogan {
  position: relative;
  font-family: var(--font-display);
  font-size: 1.12rem;
  color: var(--c-pink);
  letter-spacing: 2px;
}
.hero-sub {
  position: relative;
  max-width: 560px;
  margin: 16px auto 0;
  font-size: 0.96rem;
  color: rgba(255, 255, 255, 0.78);
}

/* ---------- 两栏布局 ---------- */
.layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 30px;
  align-items: start;
}
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin: 4px 0 16px;
  padding-left: 2px;
}
.section-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--c-primary);
  position: relative;
  padding-left: 13px;
}
.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 20px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--c-accent), var(--c-pink));
}
.section-count { font-size: 0.86rem; color: var(--c-text-faint); }

/* ---------- 文章卡片 ---------- */
.post-card {
  position: relative;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 22px 24px 20px;
  margin-bottom: 18px;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.post-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.post-card-link {
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: var(--radius);
  color: transparent;
  text-decoration: none;
}
.post-card-link:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 2px;
}
.post-card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.84rem;
  color: var(--c-text-faint);
}
.dot { color: var(--c-pink); }
.post-card-title { margin: 8px 0 8px; font-family: var(--font-display); font-size: 1.22rem; line-height: 1.45; color: var(--c-text); }
.post-card-title a { color: var(--c-text); }
.post-card-title a:hover { color: var(--c-accent); }
.post-card-excerpt {
  color: var(--c-text-soft);
  font-size: 0.94rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-card-tags { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 8px; }
.post-card-tags .tag-chip { position: relative; z-index: 3; }

/* ---------- 标签 ---------- */
.tag-chip {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 999px;
  font-size: 0.8rem;
  background: var(--c-accent-soft);
  color: var(--c-accent);
  border: 1px solid transparent;
  transition: all 0.2s ease;
}
.tag-chip:hover {
  background: var(--c-accent);
  color: #fff;
}
.tag-chip-lg { padding: 5px 16px; font-size: 0.88rem; }

/* ---------- 侧栏 ---------- */
.sidebar { position: sticky; top: 84px; display: flex; flex-direction: column; gap: 18px; }
.side-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-card);
}
.side-title {
  font-size: 0.95rem;
  color: var(--c-primary);
  margin-bottom: 13px;
  padding-bottom: 9px;
  border-bottom: 1px dashed var(--c-border);
  letter-spacing: 1px;
}
.side-avatar {
  width: 64px;
  height: 64px;
  margin: 0 auto 10px;
  display: block;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid #fff;
  box-shadow: 0 4px 12px rgba(51, 136, 187, 0.25);
}
.side-name { text-align: center; font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; color: var(--c-primary); }
.side-bio { margin-top: 8px; font-size: 0.87rem; color: var(--c-text-soft); text-align: center; }
.side-link {
  display: block;
  margin-top: 12px;
  text-align: center;
  font-size: 0.86rem;
  color: var(--c-accent);
}
.cloud { line-height: 2.1; }
.cloud-tag {
  display: inline-block;
  margin: 2px 6px 2px 0;
  color: var(--c-accent);
  white-space: nowrap;
}
.cloud-tag:hover { color: var(--c-primary); }
.cloud-count { margin-left: 3px; font-size: 0.74em; color: var(--c-text-faint); }
.side-quote {
  background: linear-gradient(135deg, var(--c-accent-soft), var(--c-pink-soft));
  border-color: transparent;
}
.quote-jp { font-family: var(--font-display); font-size: 1rem; color: var(--c-primary); font-weight: 600; }
.quote-cn { margin-top: 6px; font-size: 0.85rem; color: var(--c-text-soft); }

/* ---------- 文章详情 ---------- */
.post-page {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 20px;
  box-shadow: var(--shadow-card);
  margin: 26px 0;
  overflow: hidden;
}
.post-header {
  padding: 42px 46px 28px;
  background: linear-gradient(180deg, var(--c-accent-soft), transparent 88%);
  border-bottom: 1px solid var(--c-border);
}
.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.86rem;
  color: var(--c-text-faint);
}
.post-title {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-size: 2rem;
  line-height: 1.35;
  color: var(--c-primary);
}
.post-tags { display: flex; flex-wrap: wrap; gap: 8px; }

.post-body {
  padding: 30px 46px 40px;
  font-family: var(--font-read);
  font-size: 1.05rem;
  line-height: 1.95;
}
.post-body > :first-child { margin-top: 0; }
.post-body h2 {
  margin: 34px 0 14px;
  font-size: 1.45rem;
  color: var(--c-primary);
  padding-left: 13px;
  position: relative;
}
.post-body h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 5px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--c-accent), var(--c-pink));
}
.post-body h3 { margin: 26px 0 10px; font-size: 1.2rem; color: var(--c-primary); }
.post-body p { margin: 12px 0; color: var(--c-text); }
.post-body strong { color: var(--c-primary); }
.post-body em { color: var(--c-accent); }
.post-body a { text-decoration: underline; text-underline-offset: 3px; }
.post-body ul, .post-body ol { margin: 12px 0 12px 4px; padding-left: 24px; }
.post-body li { margin: 6px 0; }
.post-body li::marker { color: var(--c-accent); }

.post-body img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 22px auto;
  border-radius: 12px;
  box-shadow: var(--shadow-card);
}
.post-body blockquote {
  margin: 18px 0;
  padding: 12px 20px;
  border-left: 4px solid var(--c-pink);
  background: var(--c-pink-soft);
  border-radius: 0 10px 10px 0;
  color: var(--c-text-soft);
}
.post-body blockquote p { margin: 4px 0; }

.post-body code {
  font-family: var(--mono);
  font-size: 0.88em;
  padding: 2px 7px;
  border-radius: 6px;
  background: var(--c-accent-soft);
  color: #2c6ea6;
}
.post-body pre {
  margin: 18px 0;
  padding: 18px 20px;
  border-radius: 12px;
  background: var(--c-primary-deep);
  overflow-x: auto;
  line-height: 1.6;
}
.post-body pre code {
  background: none;
  color: #dfe4ff;
  padding: 0;
  font-size: 0.9rem;
}

.post-body table {
  width: 100%;
  margin: 18px 0;
  border-collapse: collapse;
  font-size: 0.94rem;
}
.post-body th, .post-body td {
  border: 1px solid var(--c-border);
  padding: 10px 14px;
  text-align: left;
}
.post-body th {
  background: var(--c-accent-soft);
  color: var(--c-primary);
  font-weight: 600;
}
.post-body tr:nth-child(even) td { background: #fafafd; }

.post-body hr { margin: 30px 0; border: 0; border-top: 1px dashed var(--c-border); }

.post-footer {
  padding: 22px 46px 30px;
  border-top: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.back-link {
  display: inline-block;
  padding: 8px 20px;
  border-radius: 999px;
  border: 1px solid var(--c-accent);
  color: var(--c-accent);
  font-size: 0.9rem;
  transition: all 0.2s ease;
}
.back-link:hover { background: var(--c-accent); color: #fff; }
.post-nav { display: flex; gap: 12px; flex: 1; }
.post-nav-item {
  display: block;
  flex: 1;
  padding: 12px 16px;
  border: 1px solid var(--c-border);
  border-radius: 12px;
  background: #fafbfe;
  transition: all 0.2s ease;
  min-width: 0;
}
.post-nav-item:hover { border-color: var(--c-accent); background: var(--c-accent-soft); }
.post-nav-right { text-align: right; }
.post-nav-label { display: block; font-size: 0.78rem; color: var(--c-text-faint); }
.post-nav-title {
  display: block;
  margin-top: 3px;
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--c-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.post-nav-item.is-empty { visibility: hidden; }

/* ---------- 标签页 / 列表页头 ---------- */
.page-head { margin: 34px 0 22px; }
.page-title { font-family: var(--font-display); font-size: 1.8rem; color: var(--c-primary); }
.page-desc { margin-top: 6px; color: var(--c-text-soft); font-size: 0.95rem; }
.tag-block { margin-bottom: 30px; }
.tag-block-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 14px;
  padding-left: 2px;
}
.tag-block-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--c-primary);
  position: relative;
  padding-left: 13px;
}
.tag-block-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 18px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--c-accent), var(--c-pink));
}
.back-line { margin: 8px 0 40px; }

/* ---------- 关于页 ---------- */
.about-page { margin: 26px 0 40px; }
.about-head {
  text-align: center;
  padding: 46px 20px 34px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 20px;
  box-shadow: var(--shadow-card);
}
.about-avatar {
  width: 96px;
  height: 96px;
  margin: 0 auto 14px;
  display: block;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid #fff;
  box-shadow: 0 8px 22px rgba(51, 136, 187, 0.35);
}
.about-tagline { margin-top: 6px; font-family: var(--font-display); color: var(--c-text-faint); font-size: 0.92rem; }
.about-body {
  margin-top: 22px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 20px;
  box-shadow: var(--shadow-card);
  padding: 30px 38px 38px;
}
.about-block { margin-bottom: 30px; }
.about-block:last-child { margin-bottom: 0; }
.about-block h2 {
  font-size: 1.2rem;
  color: var(--c-primary);
  margin-bottom: 12px;
  padding-left: 13px;
  position: relative;
}
.about-block h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 17px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--c-accent), var(--c-pink));
}
.about-block p { margin: 10px 0; color: var(--c-text-soft); }
.about-list { padding-left: 22px; }
.about-list li { margin: 8px 0; }
.about-list li::marker { color: var(--c-accent); }
.about-links a { color: var(--c-accent); }
.about-links a:hover { color: var(--c-primary); text-decoration: underline; text-underline-offset: 3px; }

/* ---------- 页面过渡与加载动画 ---------- */
@keyframes pageIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
.page-enter { animation: pageIn 0.35s ease both; }

@keyframes bootSpin {
  0%, 100% { transform: rotate(0deg) scale(1); opacity: 0.45; }
  50% { transform: rotate(180deg) scale(1.15); opacity: 1; }
}
.boot-star {
  display: inline-flex;
  color: var(--c-accent);
  animation: bootSpin 1.4s ease-in-out infinite;
}
.boot-loading-text {
  animation: bootFade 1.2s ease-in-out infinite;
}
@keyframes bootFade {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

@keyframes navPop {
  0% { transform: scale(0.92); }
  60% { transform: scale(1.06); }
  100% { transform: scale(1); }
}
.nav-link.is-active { animation: navPop 0.28s ease; }

@media (prefers-reduced-motion: reduce) {
  .page-enter, .boot-star, .boot-loading-text, .nav-link.is-active, .star, .hero::after { animation: none; }
}

/* ---------- 404 ---------- */
.notfound { text-align: center; padding: 90px 20px; }
.boot-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 110px 20px;
  color: var(--c-text-faint);
  letter-spacing: 2px;
}
.notfound-title {
  font-family: var(--font-display);
  font-size: 4.6rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--c-accent), var(--c-pink));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.notfound-msg { margin: 12px 0 26px; color: var(--c-text-soft); }

/* ---------- 页脚 ---------- */
.site-footer {
  margin-top: 46px;
  border-top: 1px solid var(--c-border);
  background: var(--c-surface);
}
.footer-inner { padding: 30px 22px 34px; text-align: center; }
.footer-slogan { font-family: var(--font-display); color: var(--c-primary); font-weight: 600; letter-spacing: 1px; }
.footer-meta { margin-top: 8px; font-size: 0.85rem; color: var(--c-text-faint); }

/* ---------- 写作台 ---------- */
.write-page { margin: 26px 0 40px; }
.write-head { margin-bottom: 18px; }
.write-layout {
  display: grid;
  grid-template-columns: 264px 1fr 1fr;
  gap: 20px;
  align-items: start;
}
.write-layout.is-hint-hidden { grid-template-columns: 1fr 1fr; }
.write-edit {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.write-field { display: flex; flex-direction: column; gap: 6px; }
.write-field > span { font-size: 0.86rem; color: var(--c-text-soft); font-weight: 500; }
.write-field input,
.write-field textarea {
  font-family: var(--font-ui);
  font-size: 0.95rem;
  color: var(--c-text);
  background: #fafbfe;
  border: 1px solid var(--c-border);
  border-radius: 9px;
  padding: 9px 12px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.write-field input:focus,
.write-field textarea:focus {
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(51, 136, 187, 0.14);
}
.write-hint-toggle {
  align-self: flex-start;
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--c-accent);
  background: var(--c-accent-soft);
  border: 0;
  padding: 5px 14px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.2s ease;
  white-space: nowrap;
}
.write-hint-toggle:hover { background: #d5e7f3; }
.write-hint-panel {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  position: sticky;
  top: 84px;
}
.write-hint-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 14px;
  border-bottom: 1px solid var(--c-border);
  background: #fafbfe;
}
.write-hint-head > span { font-size: 0.88rem; font-weight: 500; color: var(--c-primary); }
.write-hint-body { padding: 12px 14px 16px; max-height: 560px; overflow-y: auto; }
.hint-item { padding: 10px 0; border-bottom: 1px dashed var(--c-border); }
.hint-item:last-child { border-bottom: 0; padding-bottom: 2px; }
.hint-item h4 {
  margin: 0 0 6px;
  font-family: var(--font-ui);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--c-text-soft);
}
.hint-item pre {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.76rem;
  line-height: 1.6;
  color: var(--c-primary);
  background: var(--c-accent-soft);
  border-radius: 7px;
  padding: 7px 10px;
  white-space: pre-wrap;
  word-break: break-all;
}
.hint-demo {
  margin-top: 7px;
  border: 1px solid var(--c-border);
  border-radius: 7px;
  padding: 8px 10px;
  background: #fff;
  font-size: 0.8rem;
  line-height: 1.6;
}
.hint-demo > :first-child { margin-top: 0; }
.hint-demo h1, .hint-demo h2, .hint-demo h3 {
  margin: 3px 0;
  font-size: 0.95em;
  font-weight: 700;
  color: var(--c-primary);
}
.hint-demo p { margin: 2px 0; color: var(--c-text); }
.hint-demo strong { color: var(--c-primary); }
.hint-demo em { color: var(--c-accent); }
.hint-demo del { color: var(--c-text-faint); }
.hint-demo code {
  font-family: var(--mono);
  font-size: 0.85em;
  padding: 0 4px;
  border-radius: 4px;
  background: var(--c-accent-soft);
  color: var(--c-primary);
}
.hint-demo a { color: var(--c-accent); }
.hint-demo ul, .hint-demo ol { margin: 2px 0; padding-left: 18px; }
.hint-demo li { margin: 1px 0; }
.hint-demo blockquote {
  margin: 3px 0;
  padding: 2px 10px;
  border-left: 3px solid var(--c-pink);
  background: var(--c-pink-soft);
  border-radius: 0 6px 6px 0;
  color: var(--c-text-soft);
}
.hint-demo blockquote p { margin: 0; }
.hint-demo pre {
  margin: 3px 0;
  padding: 6px 8px;
  background: var(--c-primary-deep);
  color: #dfe4ff;
  border-radius: 6px;
  font-size: 0.74rem;
  line-height: 1.5;
  overflow-x: auto;
}
.hint-demo pre code { background: none; color: inherit; padding: 0; }
.hint-demo table { margin: 3px 0; border-collapse: collapse; font-size: 0.72rem; }
.hint-demo th, .hint-demo td { border: 1px solid var(--c-border); padding: 2px 8px; text-align: left; }
.hint-demo th { background: var(--c-accent-soft); color: var(--c-primary); font-weight: 500; }
.hint-demo hr { border: 0; border-top: 1px dashed var(--c-border); margin: 4px 0; }
.hint-note { margin: 5px 0 0; font-size: 0.74rem; color: var(--c-text-faint); }
.write-row { display: grid; grid-template-columns: 1fr 1.4fr; gap: 14px; }
.write-field-grow { flex: 1; display: flex; }
.write-field-grow textarea {
  flex: 1;
  min-height: 320px;
  resize: vertical;
  line-height: 1.8;
  font-family: var(--font-read);
}
.write-preview {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  position: sticky;
  top: 84px;
}
.write-preview-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-bottom: 1px solid var(--c-border);
  background: #fafbfe;
}
.write-preview-title { font-size: 0.92rem; font-weight: 500; color: var(--c-primary); }
.write-preview-hint { margin-right: auto; font-size: 0.8rem; color: var(--c-text-faint); }
.write-preview-body {
  padding: 22px 26px 26px;
  max-height: 560px;
  overflow-y: auto;
}
.write-empty { color: var(--c-text-faint); }
.write-bar {
  margin-top: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.write-btn {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  padding: 9px 20px;
  border-radius: 999px;
  border: 1px solid var(--c-border);
  background: var(--c-surface);
  color: var(--c-text-soft);
  cursor: pointer;
  transition: all 0.2s ease;
}
.write-btn:hover { border-color: var(--c-accent); color: var(--c-accent); }
.write-btn-primary {
  margin-left: auto;
  background: var(--c-accent);
  border-color: var(--c-accent);
  color: #fff;
  font-weight: 600;
}
.write-btn-primary:hover { background: #2a73a3; color: #fff; }
.write-btn-sm { padding: 6px 14px; font-size: 0.82rem; }
.write-bar-note { font-size: 0.82rem; color: var(--c-text-faint); }
.write-bar-note code {
  font-family: var(--mono);
  font-size: 0.86em;
  padding: 1px 6px;
  border-radius: 5px;
  background: var(--c-accent-soft);
  color: var(--c-primary);
}
.write-preview-flag {
  display: inline-block;
  padding: 1px 9px;
  border-radius: 999px;
  font-size: 0.74rem;
  color: #fff;
  background: var(--c-accent);
  margin-right: 4px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .write-layout,
  .write-layout.is-hint-hidden { grid-template-columns: 1fr; }
  .write-preview { position: static; }
  .write-hint-panel { position: static; max-height: none; }
}
@media (max-width: 640px) {
  .container { padding: 0 14px; }
  .header-inner { height: 56px; }
  .brand-name { font-size: 1.08rem; letter-spacing: 0.5px; }
  .site-nav { gap: 3px; }
  .nav-link { padding: 6px 10px; font-size: 0.88rem; }
  .hero { padding: 38px 18px 36px; margin: 14px 0 22px; border-radius: 16px; }
  .hero-eyebrow { font-size: 0.8rem; letter-spacing: 2px; }
  .hero-title { font-size: 1.8rem; letter-spacing: 3px; }
  .hero-slogan { font-size: 0.95rem; letter-spacing: 1px; }
  .hero-sub { font-size: 0.87rem; margin-top: 12px; }
  .section-title { font-size: 1.18rem; }
  .post-card { padding: 18px 18px 16px; margin-bottom: 14px; }
  .post-card-title { font-size: 1.12rem; }
  .post-card-excerpt { font-size: 0.9rem; }
  .post-header { padding: 24px 18px 18px; }
  .post-body { padding: 18px 18px 26px; font-size: 1rem; }
  .post-body table { display: block; overflow-x: auto; white-space: nowrap; }
  .post-footer { padding: 16px 18px 22px; }
  .post-title { font-size: 1.4rem; }
  .post-meta { font-size: 0.8rem; }
  .page-head { margin: 24px 0 16px; }
  .page-title { font-size: 1.5rem; }
  .tag-block-title { font-size: 1.15rem; }
  .sidebar { gap: 14px; }
  .side-card { padding: 16px; }
  .about-head { padding: 32px 16px 24px; }
  .about-avatar { width: 80px; height: 80px; }
  .about-body { padding: 20px 16px 24px; }
  .notfound { padding: 60px 16px; }
  .notfound-title { font-size: 3.4rem; }
  .post-nav { flex-direction: column; width: 100%; min-width: 0; }
  .post-nav-right { text-align: left; }
  .post-footer { flex-direction: column; align-items: stretch; gap: 12px; padding: 16px 20px 22px; }
  .back-link { align-self: flex-start; }
  .post-nav-item { width: 100%; padding: 11px 16px; }
  .post-nav-title { font-size: 0.86rem; }
  .write-preview-head { flex-wrap: wrap; }
  .write-edit { padding: 16px; }
  .write-row { grid-template-columns: 1fr; }
  .write-field-grow textarea { min-height: 240px; }
  .write-preview-body { max-height: none; }
  .write-bar { flex-direction: column; align-items: stretch; }
  .write-btn-primary { margin-left: 0; }
  .write-bar-note { order: -1; }
  .footer-inner { padding: 24px 14px 28px; }
}
@media (max-width: 400px) {
  .header-inner { height: 52px; }
  .brand-logo { width: 20px; height: 20px; border-radius: 5px; }
  .brand-name { font-size: 0.92rem; }
  .site-nav { gap: 0; }
  .nav-link { padding: 4px 7px; font-size: 0.8rem; }
  .hero { padding: 32px 14px 30px; }
  .hero-title { font-size: 1.55rem; letter-spacing: 2px; }
  .hero-slogan { font-size: 0.88rem; }
  .post-title { font-size: 1.3rem; }
  .tag-chip { padding: 2px 10px; font-size: 0.76rem; }
}