/* =====================================================
   对不起 · imsorry.top — 全站样式
   夜色主题：把歉意轻轻放进夜里
   ===================================================== */

:root {
  --bg: #0d1220;
  --bg-2: #111a2e;
  --card: rgba(255, 255, 255, 0.045);
  --card-hover: rgba(255, 255, 255, 0.07);
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #e8e6e1;
  --muted: #98a1b3;
  --accent: #e9b384;
  --accent-deep: #d99a63;
  --accent-ink: #221812;
  --blue: #93a7c9;
  --rose: #d9a0a8;
  --sage: #a8c5a0;
  --danger: #e07a6a;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Source Han Serif CN", "STZhongsong", "SimSun", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  --radius: 16px;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  min-height: 100vh;
  overflow-x: hidden;
}

/* 夜空底色 + 微光 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(1000px 600px at 15% -10%, rgba(233, 179, 132, 0.09), transparent 60%),
    radial-gradient(900px 600px at 90% 10%, rgba(70, 100, 160, 0.14), transparent 60%),
    radial-gradient(1200px 800px at 50% 120%, rgba(60, 50, 100, 0.12), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
}

/* 星星（由 JS 生成） */
.stars {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}
.stars i {
  position: absolute;
  display: block;
  border-radius: 50%;
  background: #fff;
  opacity: 0.55;
  animation: twinkle var(--d, 4s) ease-in-out infinite;
  animation-delay: var(--dl, 0s);
}
@keyframes twinkle {
  0%, 100% { opacity: 0.15; transform: scale(0.8); }
  50%      { opacity: 0.7;  transform: scale(1); }
}

.container { width: min(1080px, 92%); margin: 0 auto; }
.page { position: relative; z-index: 1; min-height: calc(100vh - 220px); padding-bottom: 80px; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-deep); }
code {
  background: rgba(255, 255, 255, 0.07);
  padding: 1px 6px;
  border-radius: 6px;
  font-size: 0.9em;
}
.muted { color: var(--muted); }
.mt8 { margin-top: 8px; }
.mt16 { margin-top: 16px; }
.nowrap { white-space: nowrap; }
.hidden { display: none !important; }

/* ---------------- 导航 ---------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(13, 18, 32, 0.72);
  border-bottom: 1px solid var(--line);
}
.nav-in { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo {
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 2px;
}
.logo:hover { color: var(--text); }
.logo-dot { color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a { color: var(--muted); font-size: 15px; transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--accent); }
.nav-links a.nav-cta { color: var(--accent); }
.admin-user { color: var(--muted); font-size: 14px; margin-right: 6px; }

/* ---------------- 提示 ---------------- */
.notice {
  margin-top: 14px;
  padding: 10px 18px;
  border: 1px dashed rgba(233, 179, 132, 0.4);
  border-radius: 10px;
  color: var(--accent);
  font-size: 14px;
  background: rgba(233, 179, 132, 0.06);
}
.flash {
  margin: 18px 0;
  padding: 12px 18px;
  border-radius: 10px;
  font-size: 14.5px;
}
.flash p + p { margin-top: 4px; }
.flash-ok  { background: rgba(168, 197, 160, 0.1);  border: 1px solid rgba(168, 197, 160, 0.35);  color: #c3d8bd; }
.flash-err { background: rgba(224, 122, 106, 0.1);  border: 1px solid rgba(224, 122, 106, 0.4);   color: #eba99e; }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 15px;
  font-family: var(--sans);
  cursor: pointer;
  transition: all 0.22s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--accent); color: var(--accent-ink); font-weight: 600; }
.btn-primary:hover { background: var(--accent-deep); color: var(--accent-ink); transform: translateY(-1px); box-shadow: 0 6px 22px rgba(233, 179, 132, 0.25); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line-strong); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-lg { padding: 13px 30px; font-size: 16px; }
.btn-block { width: 100%; }

/* ---------------- 首页 Hero ---------------- */
.hero { text-align: center; padding: 96px 20px 70px; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
  letter-spacing: 4px;
  padding: 7px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  margin-bottom: 34px;
}
.hero-title {
  font-family: var(--serif);
  font-size: clamp(64px, 12vw, 128px);
  font-weight: 700;
  letter-spacing: 6px;
  line-height: 1.15;
  background: linear-gradient(160deg, #f4e3cf 10%, var(--accent) 55%, #b98355 95%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-dot { -webkit-text-fill-color: var(--accent); }
.hero-sub {
  font-family: var(--serif);
  font-size: clamp(19px, 3vw, 24px);
  color: var(--text);
  margin-top: 18px;
  line-height: 2;
}
.hero-desc { color: var(--muted); margin-top: 12px; font-size: 15.5px; }
.hero-actions { display: flex; gap: 16px; justify-content: center; margin-top: 38px; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  gap: 56px;
  justify-content: center;
  margin-top: 58px;
  flex-wrap: wrap;
}
.stat strong {
  display: block;
  font-family: var(--serif);
  font-size: 34px;
  color: var(--accent);
  font-weight: 700;
}
.stat span { color: var(--muted); font-size: 13.5px; letter-spacing: 1px; }

/* ---------------- 区块标题 ---------------- */
.section-title {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 22px;
}
.section-head { display: flex; align-items: baseline; justify-content: space-between; }
.more-link { color: var(--muted); font-size: 14px; }
.more-link:hover { color: var(--accent); }
.types { padding: 40px 0 10px; }
.latest { padding: 44px 0 10px; }

/* 类型入口 */
.types-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.type-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 24px 22px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  transition: all 0.25s ease;
}
.type-card:hover { transform: translateY(-4px); border-color: rgba(233, 179, 132, 0.45); background: var(--card-hover); color: var(--text); }
.type-icon { color: var(--accent); margin-bottom: 6px; }
.type-card strong { font-family: var(--serif); font-size: 18px; letter-spacing: 1px; }
.type-desc { color: var(--muted); font-size: 13px; }

/* ---------------- 信件卡片 ---------------- */
.letter-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.letter {
  animation: fadeUp 0.5s ease both;
  height: 100%;
}
.letter:nth-child(2) { animation-delay: 0.06s; }
.letter:nth-child(3) { animation-delay: 0.12s; }
.letter:nth-child(4) { animation-delay: 0.18s; }
.letter:nth-child(5) { animation-delay: 0.24s; }
.letter:nth-child(6) { animation-delay: 0.3s; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: none; }
}
.letter-link {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 22px;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.025));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  transition: all 0.25s ease;
}
.letter-link:hover {
  transform: translateY(-4px);
  border-color: rgba(233, 179, 132, 0.4);
  box-shadow: var(--shadow);
  color: var(--text);
}
.letter-top { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; }
.letter-time { margin-left: auto; color: var(--muted); font-size: 12.5px; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  color: var(--muted);
}
.chip-person { color: var(--accent); border-color: rgba(233, 179, 132, 0.4); background: rgba(233, 179, 132, 0.07); }
.chip-event  { color: var(--sage);   border-color: rgba(168, 197, 160, 0.4); background: rgba(168, 197, 160, 0.07); }
.chip-past   { color: var(--blue);   border-color: rgba(147, 167, 201, 0.4); background: rgba(147, 167, 201, 0.07); }
.chip-self   { color: var(--rose);   border-color: rgba(217, 160, 168, 0.4); background: rgba(217, 160, 168, 0.07); }
.chip-lock   { color: var(--muted); }
.letter-salutation {
  font-family: var(--serif);
  color: var(--accent);
  font-size: 16px;
  margin-bottom: 8px;
}
.letter-body {
  font-family: var(--serif);
  font-size: 14.5px;
  line-height: 1.95;
  color: #cdd2dc;
  flex: 1;
}
.letter-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
}
.letter-from { color: var(--muted); }
.letter-hug { display: inline-flex; align-items: center; gap: 5px; color: var(--rose); }

/* ---------------- 表单 ---------------- */
.form-page { max-width: 760px; }
.form-head { margin-bottom: 30px; }
.form-head h1 {
  font-family: var(--serif);
  font-size: 32px;
  letter-spacing: 2px;
  margin-bottom: 8px;
}
.fs { border: none; margin: 26px 0; }
.fs legend {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: 1px;
}
.radio-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.write-form .radio-row[data-no-grid], .write-form fieldset:first-of-type .radio-row { grid-template-columns: repeat(4, 1fr); }
.radio-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px;
  background: var(--card);
  border: 1.5px solid var(--line);
  border-radius: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}
.radio-card:hover { border-color: var(--line-strong); }
.radio-card.checked { border-color: var(--accent); background: rgba(233, 179, 132, 0.07); }
.radio-card input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.radio-card strong { font-size: 15px; }
.radio-card .type-icon { color: var(--accent); margin-bottom: 4px; }
.radio-card span { color: var(--muted); font-size: 12.5px; line-height: 1.6; }

.field { display: block; margin-bottom: 18px; }
.field-label, .field > span { display: block; font-size: 14px; color: var(--text); margin-bottom: 8px; letter-spacing: 0.5px; }
.field-hint { color: var(--muted); font-size: 12.5px; margin-top: 6px; }
input[type="text"], input[type="password"], input[type="search"], textarea, select {
  width: 100%;
  padding: 11px 15px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  color: var(--text);
  font-size: 15px;
  font-family: var(--sans);
  transition: border-color 0.2s, background 0.2s;
  outline: none;
}
input:focus, textarea:focus { border-color: var(--accent); background: rgba(255, 255, 255, 0.07); }
input::placeholder, textarea::placeholder { color: rgba(152, 161, 179, 0.55); }
textarea { resize: vertical; line-height: 1.9; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.grid-2 .field { margin-bottom: 14px; }
.check-line { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--text); cursor: pointer; margin: 10px 0; }
.check-line input { margin-top: 6px; accent-color: var(--accent); }
.check-line strong { color: var(--danger); }
input[type="file"] { padding: 9px 14px; background: rgba(255,255,255,0.05); border: 1px dashed var(--line-strong); border-radius: 10px; color: var(--text); width: 100%; }

/* 信纸书写区 */
.letter-paper {
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 26px 26px 18px;
  margin: 24px 0;
  box-shadow: var(--shadow);
}
.paper-salutation {
  font-family: var(--serif);
  font-size: 19px;
  color: var(--accent);
  letter-spacing: 1px;
  margin-bottom: 14px;
  min-height: 28px;
}
.letter-paper textarea {
  background: transparent;
  border: none;
  padding: 0;
  font-family: var(--serif);
  font-size: 16px;
  min-height: 240px;
  color: #dfe3ea;
}
.letter-paper textarea:focus { background: transparent; }
.paper-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px dashed var(--line);
  padding-top: 14px;
  margin-top: 10px;
}
.paper-sign { max-width: 240px; font-family: var(--serif); }
.char-count { color: var(--muted); font-size: 12.5px; white-space: nowrap; }
.form-actions { display: flex; gap: 14px; margin-top: 28px; }

/* ---------------- 歉意墙 ---------------- */
.wall-page { padding-top: 50px; }
.wall-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 26px;
}
.tabs { display: flex; gap: 8px; flex-wrap: wrap; }
.tab {
  padding: 7px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  transition: all 0.2s;
}
.tab em { font-style: normal; font-size: 12px; opacity: 0.7; margin-left: 3px; }
.tab:hover { border-color: var(--line-strong); color: var(--text); }
.tab.active { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
.search { display: flex; gap: 8px; }
.search input { width: 220px; padding: 8px 14px; font-size: 14px; }
.search .btn { padding: 8px 18px; font-size: 14px; }
.search-result { margin-bottom: 18px; font-size: 14px; }

.empty {
  text-align: center;
  padding: 70px 20px;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}
.empty svg { color: rgba(233, 179, 132, 0.5); }

.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 40px; }
.pg {
  min-width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 10px;
  border-radius: 10px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  transition: all 0.2s;
}
.pg:hover { border-color: var(--accent); color: var(--accent); }
.pg.current { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
.pg-dots { color: var(--muted); align-self: center; }

/* ---------------- 详情页 ---------------- */
.detail-page { max-width: 760px; padding-top: 50px; }
.letter-full {
  padding: 44px 46px;
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  border: 1px solid var(--line-strong);
  border-radius: 20px;
  box-shadow: var(--shadow);
}
.letter-title {
  font-family: var(--serif);
  font-size: 24px;
  margin: 10px 0 4px;
  letter-spacing: 1px;
}
.letter-full .letter-salutation { font-size: 20px; margin: 22px 0 14px; }
.letter-content {
  font-family: var(--serif);
  font-size: 16.5px;
  line-height: 2.15;
  color: #d6dae2;
  word-break: break-word;
}
.letter-sign {
  font-family: var(--serif);
  text-align: right;
  color: var(--muted);
  margin-top: 26px;
  font-size: 15px;
}
.letter-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px dashed var(--line);
  flex-wrap: wrap;
}
.react-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--text);
  font-size: 14.5px;
  font-family: var(--sans);
  cursor: pointer;
  transition: all 0.22s;
}
.react-btn:hover { border-color: var(--rose); color: var(--rose); transform: translateY(-1px); }
.react-btn.reacted { background: rgba(217, 160, 168, 0.14); border-color: var(--rose); color: var(--rose); }
.react-btn.pop { animation: pop 0.35s ease; }
@keyframes pop {
  0% { transform: scale(1); }
  40% { transform: scale(1.12); }
  100% { transform: scale(1); }
}
.react-num { font-style: normal; font-weight: 600; }
.letter-views { margin-left: auto; display: inline-flex; align-items: center; gap: 6px; color: var(--muted); font-size: 13px; }
.detail-after { display: flex; gap: 14px; margin: 26px 0; flex-wrap: wrap; }
.private-guard { border: 1px solid var(--line-strong); border-radius: 20px; background: var(--card); max-width: 560px; margin: 60px auto; }
.related { margin-top: 46px; }

/* ---------------- CTA ---------------- */
.cta-band {
  margin: 70px auto 30px;
  text-align: center;
  padding: 44px 24px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: linear-gradient(160deg, rgba(233, 179, 132, 0.07), rgba(70, 100, 160, 0.06));
}
.cta-text {
  font-family: var(--serif);
  font-size: 21px;
  letter-spacing: 1px;
  margin-bottom: 20px;
}

/* ---------------- 页脚 ---------------- */
.footer {
  border-top: 1px solid var(--line);
  padding: 34px 0 40px;
  position: relative;
  z-index: 1;
  background: rgba(13, 18, 32, 0.6);
}
.footer-quote {
  font-family: var(--serif);
  color: var(--muted);
  text-align: center;
  font-size: 14.5px;
  letter-spacing: 2px;
}
.footer-meta { text-align: center; color: rgba(152, 161, 179, 0.65); font-size: 13px; margin-top: 10px; }
.footer-meta .sep { margin: 0 8px; opacity: 0.5; }
.footer-meta a { color: rgba(152, 161, 179, 0.8); }
.footer-meta a:hover { color: var(--accent); }
.footer-admin { opacity: 0.65; }

/* ---------------- 安装页 / 登录页 ---------------- */
.install-page, .login-body { display: flex; flex-direction: column; align-items: center; padding: 60px 20px 80px; }
.install-wrap { width: min(720px, 100%); position: relative; z-index: 1; }
.login-wrap { width: min(400px, 100%); margin-top: 8vh; position: relative; z-index: 1; text-align: center; }
.install-logo {
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 700;
  letter-spacing: 3px;
}
.install-logo .logo-dot { color: var(--accent); }
.install-sub { color: var(--muted); letter-spacing: 4px; font-size: 13px; margin: 6px 0 28px; }
.login-back { margin-top: 18px; }
.login-back a { color: var(--muted); }
.login-body .panel { text-align: left; }

.panel {
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.025));
  border: 1px solid var(--line-strong);
  border-radius: 20px;
  padding: 34px;
  box-shadow: var(--shadow);
}
.panel + .panel { margin-top: 20px; }
.panel h2 {
  font-family: var(--serif);
  font-size: 21px;
  letter-spacing: 1px;
  margin-bottom: 18px;
}
.panel fieldset { border: none; margin-bottom: 20px; }
.panel legend {
  font-size: 14px;
  color: var(--accent);
  letter-spacing: 2px;
  margin-bottom: 12px;
  font-weight: 600;
}
.install-form fieldset { padding-bottom: 6px; }
.install-form legend { display: block; }
.env-table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.env-table td { padding: 10px 8px; border-bottom: 1px solid var(--line); }
.env-status { width: 90px; font-weight: 600; }
.env-note { color: var(--muted); font-size: 12.5px; text-align: right; }
tr.ok .env-status { color: var(--sage); }
tr.fail .env-status { color: var(--danger); }
.install-error {
  background: rgba(224, 122, 106, 0.1);
  border: 1px solid rgba(224, 122, 106, 0.4);
  border-radius: 10px;
  color: #eba99e;
  padding: 12px 16px;
  font-size: 14px;
}
.install-error p + p { margin-top: 4px; }
.install-tips {
  margin-top: 20px;
  padding: 16px 18px;
  border: 1px dashed rgba(233, 179, 132, 0.4);
  border-radius: 12px;
  font-size: 13.5px;
  color: var(--muted);
  background: rgba(233, 179, 132, 0.04);
}
.install-tips p + p { margin-top: 4px; }
.done-list { margin: 14px 0 4px 20px; line-height: 2.2; }

/* ---------------- 后台 ---------------- */
.admin-body { background: var(--bg); }
.admin-page { padding: 40px 0 80px; }
.admin-nav { margin-bottom: 10px; }
.admin-page .container { max-width: 1180px; }
.stat-cards { display: grid; grid-template-columns: repeat(7, 1fr); gap: 12px; margin-bottom: 30px; }
.stat-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px 14px;
  text-align: center;
}
.stat-card strong { display: block; font-family: var(--serif); font-size: 26px; color: var(--accent); }
.stat-card span { color: var(--muted); font-size: 12.5px; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 14px; }
.admin-table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 860px; }
.admin-table th {
  text-align: left;
  padding: 12px 14px;
  color: var(--muted);
  font-weight: 500;
  font-size: 13px;
  border-bottom: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.03);
  white-space: nowrap;
}
.admin-table td { padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.admin-table tbody tr:hover { background: rgba(255, 255, 255, 0.025); }
.admin-table tbody tr:last-child td { border-bottom: none; }
.row-hidden { opacity: 0.45; }
.td-content { max-width: 320px; }
.row-actions { display: flex; gap: 10px; align-items: center; }
.row-actions a, .link-btn {
  background: none;
  border: none;
  padding: 0;
  font-size: 13.5px;
  color: var(--blue);
  cursor: pointer;
  font-family: var(--sans);
}
.row-actions a:hover, .link-btn:hover { color: var(--accent); }
.link-btn.danger { color: var(--danger); }
.link-btn.danger:hover { color: #f0937f; }
.inline-form { display: inline; }
.tag { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; border: 1px solid var(--line-strong); }
.tag-public  { color: var(--sage);   border-color: rgba(168, 197, 160, 0.45); }
.tag-private { color: var(--blue);   border-color: rgba(147, 167, 201, 0.45); }
.tag-hidden  { color: var(--danger); border-color: rgba(224, 122, 106, 0.45); }
.settings-page { max-width: 680px; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 960px) {
  .letter-grid { grid-template-columns: repeat(2, 1fr); }
  .types-grid { grid-template-columns: repeat(2, 1fr); }
  .write-form fieldset:first-of-type .radio-row { grid-template-columns: repeat(2, 1fr); }
  .stat-cards { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 620px) {
  .letter-grid { grid-template-columns: 1fr; }
  .radio-row { grid-template-columns: 1fr !important; }
  .hero { padding: 64px 16px 50px; }
  .hero-stats { gap: 30px; }
  .hero-title { letter-spacing: 2px; }
  .letter-full { padding: 30px 22px; }
  .stat-cards { grid-template-columns: repeat(2, 1fr); }
  .grid-2 { grid-template-columns: 1fr; }
  .wall-toolbar { flex-direction: column; align-items: stretch; }
  .search input { width: 100%; flex: 1; }
  .nav-links { gap: 16px; }
  .nav-links a { font-size: 14px; }
}