/* ============================================================
   熟稔于纸 · 宣纸水墨设计系统
   亮色为默认;prefers-color-scheme: dark 自动切换
   ============================================================ */
:root {
  color-scheme: light;

  --bg: #f2ede3;
  --bg-soft: #eae3d5;
  --card: rgba(255, 252, 244, .78);
  --card-solid: #fffdf6;
  --text: #37322a;
  --muted: #918a7b;
  --ink: #37322a;
  --accent: #9e3b33;
  --accent-dark: #822e27;
  --accent-soft: rgba(158, 59, 51, .10);
  --danger: #a5433b;
  --danger-soft: rgba(165, 67, 59, .12);
  --border: rgba(55, 50, 42, .12);
  --border-strong: rgba(55, 50, 42, .24);
  --shadow: 0 1px 2px rgba(87, 74, 55, .06), 0 10px 26px -14px rgba(87, 74, 55, .25);
  --shadow-hover: 0 2px 4px rgba(87, 74, 55, .07), 0 18px 38px -16px rgba(87, 74, 55, .34);
  --ring: 0 0 0 3px rgba(158, 59, 51, .16);
  --radius: 4px;
  --radius-sm: 3px;

  --serif: "Songti SC", "Noto Serif SC", "Noto Serif CJK SC", "STSong",
           "SimSun", "Source Han Serif SC", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC",
          "Microsoft YaHei", "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #191614;
    --bg-soft: #221e1a;
    --card: rgba(43, 38, 33, .82);
    --card-solid: #2b2621;
    --text: #e8e2d4;
    --muted: #95897a;
    --ink: #e8e2d4;
    --accent: #c96b5f;
    --accent-dark: #dd887d;
    --accent-soft: rgba(201, 107, 95, .14);
    --danger: #cf6f63;
    --danger-soft: rgba(207, 111, 99, .16);
    --border: rgba(232, 226, 212, .10);
    --border-strong: rgba(232, 226, 212, .22);
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 10px 28px -14px rgba(0, 0, 0, .65);
    --shadow-hover: 0 2px 6px rgba(0, 0, 0, .45), 0 18px 40px -16px rgba(0, 0, 0, .75);
    --ring: 0 0 0 3px rgba(201, 107, 95, .22);
  }
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--serif);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  padding: 56px 24px 80px;
  transition: background .3s ease, color .3s ease;
  position: relative;
}

/* ---------------- 宣纸纹理 ---------------- */
.paper-texture {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    radial-gradient(ellipse 900px 500px at 12% -4%, var(--accent-soft), transparent 62%),
    radial-gradient(ellipse 800px 560px at 92% 6%, rgba(112, 111, 90, .08), transparent 60%),
    radial-gradient(ellipse 1000px 600px at 50% 110%, rgba(112, 111, 90, .07), transparent 62%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.55 0 0 0 0 0.52 0 0 0 0 0.44 0 0 0 0.055 0'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

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

::selection { background: var(--accent-soft); }

/* ---------------- 题首 ---------------- */
header { text-align: center; margin-bottom: 52px; position: relative; }

.masthead {
  display: inline-flex; align-items: center; gap: 20px;
}
.site-title {
  font-size: 42px; font-weight: 700; letter-spacing: 12px;
  text-indent: 12px;  /* 抵消末字右侧字距,保持视觉居中 */
  font-family: var(--serif);
  color: var(--ink);
}
.seal {
  flex: none;
  width: 46px; height: 46px; border-radius: 7px;
  background: var(--accent); color: #f6efe2;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; font-weight: 700;
  box-shadow: 0 3px 10px -3px rgba(158, 59, 51, .5);
  transform: rotate(3deg);
}
.motto-l {
  font-size: 12px; color: var(--muted); letter-spacing: 3px;
  writing-mode: vertical-rl; line-height: 1;
  padding: 4px 0;
}
.motto-sub {
  margin-top: 18px; font-size: 14px; color: var(--muted);
  letter-spacing: 6px; text-indent: 6px;
}
.brush-rule {
  width: 56px; height: 3px; margin: 22px auto 0; border-radius: 2px;
  background: var(--accent);
  opacity: .55;
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 56 3' preserveAspectRatio='none'%3E%3Cpath d='M0 1.5 Q 10 0.4 20 1.5 T 40 1.5 T 56 1.2 L 56 3 L 0 3 Z' fill='%23000'/%3E%3C/svg%3E");
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 56 3' preserveAspectRatio='none'%3E%3Cpath d='M0 1.5 Q 10 0.4 20 1.5 T 40 1.5 T 56 1.2 L 56 3 L 0 3 Z' fill='%23000'/%3E%3C/svg%3E");
  mask-size: 100% 100%; -webkit-mask-size: 100% 100%;
}

.top-actions { position: absolute; top: -12px; right: 0; display: flex; gap: 8px; }
.inline-form { display: inline; }

/* ---------------- 按钮 ---------------- */
.btn, .topbtn, button {
  font-family: var(--serif);
  -webkit-tap-highlight-color: transparent;
}
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 8px 18px; border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 500; cursor: pointer;
  border: 1px solid var(--border-strong); background: var(--card-solid);
  color: var(--text); text-decoration: none;
  transition: border-color .15s, background .15s, color .15s, box-shadow .15s, transform .1s;
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn:active { transform: scale(.97); }
.btn:focus-visible { outline: none; box-shadow: var(--ring); }
.btn.primary {
  background: var(--accent); border-color: var(--accent); color: #f6efe2;
  box-shadow: 0 4px 12px -4px rgba(158, 59, 51, .5);
}
.btn.primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); color: #f6efe2; }
.btn.danger { background: var(--danger); border-color: var(--danger); color: #f6efe2; }
.btn.danger:hover { opacity: .9; color: #f6efe2; }
.btn.danger-ghost {
  background: transparent; border-color: var(--border-strong); color: var(--muted);
}
.btn.danger-ghost:hover { color: var(--danger); border-color: var(--danger); background: var(--danger-soft); }
.btn.sm { padding: 4px 10px; font-size: 12px; border-radius: var(--radius-sm); }
.topbtn {
  font-size: 12px; color: var(--muted); background: var(--card);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 6px 14px; cursor: pointer; text-decoration: none;
  letter-spacing: 2px;
  display: inline-flex; align-items: center; justify-content: center;
  transition: color .15s, border-color .15s;
}
.topbtn:hover { color: var(--accent); border-color: var(--accent); }
.topbtn:focus-visible { outline: none; box-shadow: var(--ring); }
.topbtn.theme-btn { padding: 6px 9px; letter-spacing: 0; }

/* ---------------- 搜索 ---------------- */
.search-wrap { max-width: 460px; margin: 0 auto 40px; position: relative; }
.search-wrap .search-icon {
  position: absolute; left: 15px; top: 24px; transform: translateY(-50%);
  color: var(--muted); pointer-events: none;
}
#search {
  width: 100%; padding: 12px 40px 12px 42px; font-size: 14px; font-family: var(--serif);
  border: none; border-bottom: 1px solid var(--border-strong);
  border-radius: 0;
  background: transparent; color: var(--text); outline: none;
  letter-spacing: 1px;
  transition: border-color .15s, box-shadow .15s;
}
/* 隐藏 WebKit/IE 对 type=search 自带的清除按钮,避免与本页清除按钮重复 */
#search::-webkit-search-cancel-button,
#search::-webkit-search-decoration { -webkit-appearance: none; appearance: none; }
#search::-ms-clear { display: none; }
#search::placeholder { color: var(--muted); opacity: .85; }
#search:focus { border-color: var(--accent); box-shadow: 0 1px 0 0 var(--accent); }
#searchClear {
  display: none; position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  width: 24px; height: 24px; border-radius: 50%; border: none;
  background: var(--bg-soft); color: var(--muted); font-size: 12px; cursor: pointer;
}
#searchClear:hover { color: var(--danger); }
#searchClear.show { display: block; }

.engine-bar {
  display: flex; justify-content: center; gap: 6px; margin-top: 12px;
}
.engine-bar .engine {
  padding: 4px 14px; font-size: 12px; font-family: var(--serif); cursor: pointer;
  border: none; border-bottom: 1px solid transparent; border-radius: 0;
  background: transparent; color: var(--muted);
  letter-spacing: 2px;
  transition: color .15s, border-color .15s;
}
.engine-bar .engine:hover { color: var(--text); }
.engine-bar .engine.active {
  color: var(--accent); border-bottom-color: var(--accent); font-weight: 600;
}

.no-result {
  display: none; text-align: center; padding: 48px 0; color: var(--muted);
  font-size: 14px; letter-spacing: 4px;
}
.no-result.show { display: block; }

/* ---------------- 搜索联想 ---------------- */
.suggest {
  display: none; position: absolute; top: calc(100% + 2px); left: 0; right: 0;
  z-index: 60; overflow: hidden;
  background: var(--card-solid); border: 1px solid var(--border);
  border-radius: 6px; box-shadow: var(--shadow-hover);
}
.suggest.show { display: block; }
.suggest .s-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 14px; cursor: pointer;
  color: var(--text); text-decoration: none; font-size: 13.5px;
}
.suggest .s-item .s-ico {
  flex: none; width: 24px; height: 24px; border-radius: 3px;
  background: var(--accent-soft); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700;
}
/* 在线联想词的"搜"字印用墨色区分 */
.suggest .s-item.s-word .s-ico { background: var(--bg-soft); color: var(--muted); }
.suggest .s-item .s-name {
  font-weight: 700; letter-spacing: .5px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.suggest .s-item .s-desc {
  min-width: 0; flex: 1; font-size: 12px; color: var(--muted); text-align: right;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.suggest .s-item:hover, .suggest .s-item.sel { background: var(--accent-soft); }
.suggest .s-web {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  padding: 8px 14px; border-top: 1px solid var(--border);
  font-size: 12.5px; color: var(--muted); cursor: pointer; text-decoration: none;
}
.suggest .s-web:hover { color: var(--accent); background: var(--accent-soft); }
.suggest .s-web b { color: var(--accent); font-weight: 700; }
.suggest .s-empty {
  padding: 12px 14px; font-size: 12.5px; color: var(--muted); text-align: center;
  letter-spacing: 1px;
}

/* ---------------- 分组 ---------------- */
section { margin-bottom: 48px; }

/* 首页分组双栏左右布局 */
#sections {
  display: grid; grid-template-columns: 1fr 1fr;
  column-gap: 32px; row-gap: 28px; align-items: start;
}
#sections .group-block { margin-bottom: 0; min-width: 0; }
/* 分组数为奇数时,最后一组横跨两栏 */
#sections .group-block:last-child:nth-child(odd) { grid-column: 1 / -1; }
@media (max-width: 860px) {
  #sections { grid-template-columns: 1fr; row-gap: 0; }
  #sections .group-block { margin-bottom: 48px; }
  #sections .group-block:last-child { margin-bottom: 0; }
}
.group-title {
  display: flex; align-items: center; gap: 12px; margin-bottom: 18px;
}
.g-mark {
  flex: none; width: 26px; height: 26px; border-radius: 4px;
  background: var(--ink); color: var(--bg);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700;
}
.group-title h2 {
  font-size: 17px; font-weight: 700; letter-spacing: 4px;
  font-family: var(--serif); color: var(--ink);
}
.group-title .gline {
  flex: 1; height: 1px;
  background: linear-gradient(90deg, var(--border-strong), transparent);
}
.gops { display: none; gap: 6px; }
.editmode .gops { display: flex; }
.empty-group { font-size: 13px; color: var(--muted); padding: 4px 2px; }

/* ---------------- 卡片(基础行式,供后台编辑用) ---------------- */
.grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 14px;
}
.card {
  display: flex; flex-direction: column; gap: 10px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px 16px 13px; text-decoration: none;
  color: inherit; position: relative;
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  transition: transform .18s ease, box-shadow .18s ease,
              border-color .18s ease, opacity .15s ease;
}
/* 左上角斜折角 */
.card::before {
  content: ""; position: absolute; top: 0; left: 0;
  border-width: 9px 9px 0 0;
  border-style: solid;
  border-color: var(--bg-soft) transparent transparent var(--bg-soft);
  border-radius: 2px 0 0 0;
  transition: border-color .18s ease;
  filter: drop-shadow(1px 1px 1px rgba(87, 74, 55, .12));
}
a.card:hover, .admin-grid .card:hover {
  transform: translateY(-3px);
  border-color: rgba(158, 59, 51, .40);
  box-shadow: var(--shadow-hover);
}
a.card:hover::before, .admin-grid .card:hover::before {
  border-color: var(--accent) transparent transparent var(--accent);
}
.card-row { display: flex; align-items: center; gap: 12px; }
.favico {
  flex: none; width: 40px; height: 40px; border-radius: 3px;
  background: var(--accent-soft); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 19px; font-weight: 700;
  transition: transform .18s ease;
}
a.card:hover .favico, .admin-grid .card:hover .favico { transform: scale(1.06); }
.card-txt { min-width: 0; }
.card .name {
  font-size: 14px; font-weight: 700; letter-spacing: 1px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.card .desc {
  margin-top: 2px; font-size: 12px; color: var(--muted);
  letter-spacing: .5px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.card .url-host {
  font-size: 11px; color: var(--muted); opacity: .7;
  font-family: var(--sans);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

/* 首页小方块(仅作用首页 #sections,后台不受影响) */
#sections .grid {
  grid-template-columns: repeat(auto-fill, minmax(118px, 1fr));
  gap: 14px;
}
#sections .card {
  flex-direction: column; align-items: center; gap: 10px;
  padding: 18px 10px 14px;
}
#sections .card .name {
  display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2;
  max-width: 100%; text-align: center; line-height: 1.5;
  word-break: break-all; overflow: hidden;
  min-height: 2.9em;
}

/* 卡片上的操作按钮(编辑模式) */
.card .ops { display: none; gap: 6px; }
.editmode .card .ops { display: flex; }

/* ---------------- 图标占位色板(墨彩) ---------------- */
.tone-0 { background: rgba(158,59,51,.12);  color: #9e3b33; }
.tone-1 { background: rgba(112,111,74,.13); color: #6e6d3d; }
.tone-2 { background: rgba(138,96,58,.13);  color: #8a603a; }
.tone-3 { background: rgba(74,84,120,.12);  color: #4a5478; }
.tone-4 { background: rgba(138,74,105,.12); color: #8a4a69; }
.tone-5 { background: rgba(62,104,94,.12);  color: #3e685e; }
@media (prefers-color-scheme: dark) {
  .tone-0 { background: rgba(201,107,95,.16); color: #d98d82; }
  .tone-1 { background: rgba(158,158,102,.16); color: #c0c084; }
  .tone-2 { background: rgba(190,140,95,.16); color: #d3a678; }
  .tone-3 { background: rgba(120,133,180,.16); color: #a3b0da; }
  .tone-4 { background: rgba(180,110,150,.16); color: #d49cc0; }
  .tone-5 { background: rgba(95,145,130,.16); color: #84c0ae; }
}

/* 手动夜间模式(覆盖系统设置) */
:root[data-theme="dark"] {
  --bg: #191614;
  --bg-soft: #221e1a;
  --card: rgba(43, 38, 33, .82);
  --card-solid: #2b2621;
  --text: #e8e2d4;
  --muted: #95897a;
  --ink: #e8e2d4;
  --accent: #c96b5f;
  --accent-dark: #dd887d;
  --accent-soft: rgba(201, 107, 95, .14);
  --danger: #cf6f63;
  --danger-soft: rgba(207, 111, 99, .16);
  --border: rgba(232, 226, 212, .10);
  --border-strong: rgba(232, 226, 212, .22);
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 10px 28px -14px rgba(0, 0, 0, .65);
  --shadow-hover: 0 2px 6px rgba(0, 0, 0, .45), 0 18px 40px -16px rgba(0, 0, 0, .75);
  --ring: 0 0 0 3px rgba(201, 107, 95, .22);
}
:root[data-theme="dark"] .tone-0 { background: rgba(201,107,95,.16); color: #d98d82; }
:root[data-theme="dark"] .tone-1 { background: rgba(158,158,102,.16); color: #c0c084; }
:root[data-theme="dark"] .tone-2 { background: rgba(190,140,95,.16); color: #d3a678; }
:root[data-theme="dark"] .tone-3 { background: rgba(120,133,180,.16); color: #a3b0da; }
:root[data-theme="dark"] .tone-4 { background: rgba(180,110,150,.16); color: #d49cc0; }
:root[data-theme="dark"] .tone-5 { background: rgba(95,145,130,.16); color: #84c0ae; }

/* 主题切换按钮 */
.theme-btn svg { display: block; }
.theme-btn .icon-sun { display: none; }
:root[data-theme="dark"] .theme-btn .icon-sun { display: block; }
:root[data-theme="dark"] .theme-btn .icon-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .theme-btn .icon-sun { display: block; }
  :root:not([data-theme]) .theme-btn .icon-moon { display: none; }
  :root[data-theme="light"] .theme-btn .icon-sun { display: none; }
  :root[data-theme="light"] .theme-btn .icon-moon { display: block; }
}

/* ---------------- 登录页(信笺纸) ---------------- */
/* 整页不产生滚动条:纸面高度用 vh 拟合到视口内,备案号固定在页面底部 */
body.page-login {
  padding: 0;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.login-wrap {
  flex: 1; min-height: 0;
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
}
/* 登录框 = 一张信笺纸,叠在另一张垫纸上
   纸面占视口约 3/4(宽与高各约 75%),内容限制在舒适阅读宽度内 */
.login-box {
  position: relative;
  width: 75vw; height: 74vh; max-width: 1400px; max-height: 100%;
  display: flex; flex-direction: column; justify-content: center;
  text-align: center;
  padding: 40px clamp(28px, 6vw, 96px);
  isolation: isolate; transform-origin: 80% 45%;
  animation: paper-in .8s cubic-bezier(.25,.8,.3,1.05) both,
             paper-dip .3s ease 1.12s;
}
/* 正文内容收窄,保持信笺的疏朗感 */
.login-box form,
.login-box .sub,
.login-box .login-tip,
.login-box .flash {
  width: 100%; max-width: 420px; margin-left: auto; margin-right: auto;
}
/* 纸面 */
.login-box::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: var(--card-solid); border: 1px solid var(--border);
  border-radius: 8px;
}
/* 垫在下层的纸,微微错位 */
.login-box::before {
  content: ""; position: absolute; inset: 0; z-index: -2;
  background: var(--bg-soft); border: 1px solid var(--border);
  border-radius: 8px;
  transform: rotate(-2.4deg) translate(12px, 9px);
  animation: backpaper-in .7s ease .3s both;
}
@keyframes paper-in {
  0% {
    opacity: 0;
    transform: perspective(1200px) rotateY(-46deg) translateX(46px) translateZ(-140px);
    box-shadow: 0 34px 70px -24px rgba(87, 74, 55, .5);
  }
  62% {
    opacity: 1;
    transform: perspective(1200px) rotateY(7deg) translateX(-7px) translateZ(4px);
    box-shadow: 0 16px 34px -18px rgba(87, 74, 55, .4);
  }
  100% {
    opacity: 1;
    transform: perspective(1200px) rotateY(0) translateX(0) translateZ(0);
    box-shadow: var(--shadow);
  }
}
@keyframes backpaper-in { from { opacity: 0; } to { opacity: 1; } }
/* 落章瞬间纸面轻沉一下 */
@keyframes paper-dip {
  0%, 100% { transform: perspective(1200px) translateY(0); }
  45%      { transform: perspective(1200px) translateY(4px); }
}
/* 密码错误:纸面被叩两下 */
@keyframes paper-shake {
  0%, 100% { transform: translateX(0); }
  20%      { transform: translateX(-8px) rotate(-.4deg); }
  60%      { transform: translateX(8px) rotate(.4deg); }
}
.login-box.shake {
  animation: paper-in .8s cubic-bezier(.25,.8,.3,1.05) both,
             paper-shake .38s ease 1.15s 2;
}

.login-box .masthead { justify-content: center; }
/* 墨迹显影 */
.login-box .site-title {
  font-size: clamp(34px, 4.4vw, 60px); letter-spacing: 12px; text-indent: 12px;
  animation: ink-reveal .65s ease .8s both;
}
@keyframes ink-reveal {
  from { opacity: 0; filter: blur(7px); transform: scale(1.04); }
  to   { opacity: 1; filter: blur(0);  transform: scale(1); }
}
/* 落章 */
.login-box .seal {
  width: clamp(40px, 3.4vw, 52px); height: clamp(40px, 3.4vw, 52px);
  font-size: clamp(20px, 1.7vw, 26px);
  animation: seal-stamp .4s cubic-bezier(.34,1.45,.6,1) .95s both;
}
@keyframes seal-stamp {
  0%   { opacity: 0; transform: rotate(9deg) scale(1.7); }
  55%  { opacity: 1; transform: rotate(2.4deg) scale(.94); }
  80%  { transform: rotate(3.2deg) scale(1.03); }
  100% { opacity: 1; transform: rotate(3deg) scale(1); }
}
@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}
.login-box .sub {
  color: var(--muted); font-size: clamp(13px, 1.05vw, 16px); letter-spacing: 2px;
  margin: 26px auto 0;
  line-height: 2.2;
  animation: rise .5s ease 1.15s both;
}
/* 笔触一笔画出 */
.login-box .brush-rule {
  width: 76px; margin: 28px auto 0; transform-origin: 50% 50%;
  animation: rule-draw .5s ease 1.32s both;
}
@keyframes rule-draw {
  from { transform: scaleX(0); opacity: 0; }
  to   { transform: scaleX(1); opacity: .55; }
}
.login-box form { animation: rise .5s ease 1.4s both; }
.login-box .login-tip { animation: rise .5s ease 1.55s both; }
.login-box .flash { animation: rise .45s ease 1.3s both; }

.login-box input {
  width: 100%; padding: 14px 16px; font-size: 16px; font-family: var(--serif);
  border: none; border-bottom: 1px solid var(--border-strong);
  border-radius: 0;
  outline: none; background-color: transparent; color: var(--text); text-align: center;
  letter-spacing: 3px; caret-color: var(--accent);
  /* 聚焦时墨线自中央向两侧晕开 */
  background-image: linear-gradient(var(--accent), var(--accent));
  background-repeat: no-repeat; background-position: 50% 100%;
  background-size: 0% 2px;
  transition: background-size .35s ease;
}
.login-box input:focus { background-size: 100% 2px; }
.login-box button {
  margin-top: 26px; width: 100%; padding: 13px; font-size: 15px;
  background: var(--accent); color: #f6efe2; border: none;
  border-radius: var(--radius-sm); cursor: pointer; font-weight: 500;
  letter-spacing: 8px; text-indent: 8px;
  transition: background .15s, transform .15s, box-shadow .15s;
}
.login-box button:hover {
  background: var(--accent-dark); transform: translateY(-2px);
  box-shadow: 0 8px 18px -6px rgba(158,59,51,.55);
}
.login-box button:active { transform: translateY(0) scale(.98); }
.flash { margin-top: 12px; font-size: 13px; color: var(--danger); min-height: 18px; }
.login-tip { margin-top: 22px; font-size: 12px; color: var(--muted); opacity: .7; letter-spacing: 2px; }

/* 提交离开:翻过这一页 */
body.page-leaving .login-wrap { pointer-events: none; }
body.page-leaving .login-box { animation: paper-leave .34s ease-in both; }
@keyframes paper-leave {
  to { opacity: 0; transform: perspective(1200px) rotateY(30deg) translate(-64px, -48px); }
}

/* 减弱动态效果:全部动效禁用 */
@media (prefers-reduced-motion: reduce) {
  .login-box, .login-box::before, .login-box::after, .login-box .site-title,
  .login-box .seal, .login-box .sub, .login-box .brush-rule,
  .login-box form, .login-box .login-tip, .login-box .flash,
  body.page-leaving .login-box { animation: none !important; }
  body.page-leaving .login-box { opacity: .3; transition: opacity .2s ease; }
}

/* ---------------- 对话框 ---------------- */
dialog {
  border: 1px solid var(--border); border-radius: 6px; padding: 26px;
  background: var(--card-solid); color: var(--text); min-width: 340px; max-width: 92vw;
  box-shadow: var(--shadow-hover);
}
dialog::backdrop { background: rgba(26, 22, 18, .5); backdrop-filter: blur(3px); }
dialog h3 { font-size: 16px; margin-bottom: 18px; letter-spacing: 2px; }
dialog label { display: block; font-size: 12px; color: var(--muted); margin: 14px 0 5px; }
dialog input, dialog select {
  width: 100%; padding: 10px 12px; font-size: 14px; font-family: var(--serif);
  border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  outline: none; background: var(--bg-soft); color: var(--text);
  transition: border-color .15s, box-shadow .15s;
}
dialog input:focus, dialog select:focus { border-color: var(--accent); box-shadow: var(--ring); }
.dlg-ops { margin-top: 24px; display: flex; gap: 10px; justify-content: flex-end; }
.dlg-error { margin-top: 10px; font-size: 12px; color: var(--danger); min-height: 16px; }

/* ---------------- 后台 ---------------- */
.admin-hint {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  margin: -20px 0 30px; font-size: 12px; color: var(--muted); letter-spacing: 1px;
}
.admin-hint .dot-badge {
  background: var(--accent-soft); color: var(--accent);
  font-size: 11px; padding: 3px 12px; border-radius: var(--radius-sm);
}
.add-group-row { text-align: center; margin-top: -12px; }
.pwd-row { text-align: center; margin-top: 40px; }
.danger-zone { margin-top: 14px; }

/* 拖拽 */
.card.dragging { opacity: .35; }
.grid.drag-over { outline: 2px dashed var(--accent); outline-offset: 4px; border-radius: var(--radius); }
body.admin-dragging, body.admin-dragging * { cursor: grabbing !important; }

/* ---------------- 提示条 ---------------- */
#toast {
  position: fixed; left: 50%; bottom: 40px; transform: translateX(-50%) translateY(6px);
  background: var(--ink); color: var(--bg);
  font-size: 13px; padding: 10px 22px; border-radius: var(--radius-sm);
  letter-spacing: 2px;
  opacity: 0; pointer-events: none; transition: opacity .25s ease, transform .25s ease;
  z-index: 300; box-shadow: var(--shadow-hover); max-width: 80vw;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

footer {
  text-align: center; margin-top: 40px; font-size: 12px;
  color: var(--muted); letter-spacing: 4px; opacity: .85;
}
.foot-sep { margin: 0 8px; opacity: .6; }

/* 备案号 */
.beian {
  display: inline-block; margin-top: 10px; font-size: 11px;
  letter-spacing: 2px; color: var(--muted); opacity: .75;
  text-decoration: none; transition: opacity .15s, color .15s;
  font-family: "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
}
.beian:hover { opacity: 1; color: var(--accent); }

/* 页面底部版权/备案条(纸外) */
.site-foot {
  flex: none;
  text-align: center;
  padding: 0 16px 18px;
  font-size: 11px; letter-spacing: 3px; color: var(--muted); opacity: .8;
}
.site-foot .beian { margin-top: 0; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 900px) {
  /* 窄屏:纸面铺满可用宽度,高度仍按视口拟合,保持无滚动条 */
  body.page-login { height: auto; min-height: 100dvh; overflow-y: auto; overflow-x: hidden; }
  .login-box {
    width: 100%; height: auto; min-height: 0; max-height: none;
    padding: 40px clamp(20px, 7vw, 52px) 36px;
  }
  /* 垫纸在窄屏会溢出视口,收小错位量 */
  .login-box::before { transform: rotate(-1.2deg) translate(4px, 5px); }
  .login-box form,
  .login-box .sub,
  .login-box .login-tip,
  .login-box .flash { max-width: 340px; }
  .login-wrap { padding: 16px; flex: 1; }
}

@media (max-width: 640px) {
  body { padding: 40px 16px 56px; }
  .site-title { font-size: 30px; letter-spacing: 8px; text-indent: 8px; }
  .seal { width: 38px; height: 38px; font-size: 19px; }
  .masthead { gap: 14px; }
  .motto-l { display: none; }
  .motto-sub { font-size: 12px; letter-spacing: 4px; text-indent: 4px; }
  #sections .grid { grid-template-columns: repeat(auto-fill, minmax(102px, 1fr)); gap: 12px; }
  #sections .card { padding: 15px 8px 12px; }
  .favico { width: 38px; height: 38px; font-size: 18px; }
  #sections .card .name { font-size: 13px; }
  .search-wrap { margin-bottom: 30px; }
  dialog { min-width: 0; width: 92vw; }
}

/* ============================================================
   后台 · 就地编辑模式
   ============================================================ */

/* 顶部固定保存条 */
.save-bar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: center; gap: 12px;
  margin: -8px 0 30px; padding: 10px 16px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}
.save-bar .save-state { font-size: 12px; color: var(--muted); letter-spacing: 1px; }
.save-bar .save-state.dirty { color: var(--accent); font-weight: 600; }

/* 分组标题:名称直接可点改 */
.admin-root .group-title h2[contenteditable="true"] {
  outline: none; border-radius: 6px; padding: 2px 6px; margin: -2px -6px;
  cursor: text; min-width: 2em;
  transition: background .15s, box-shadow .15s;
}
.admin-root .group-title h2[contenteditable="true"]:hover { background: var(--accent-soft); }
.admin-root .group-title h2[contenteditable="true"]:focus {
  background: var(--card-solid); box-shadow: var(--ring);
}

/* 卡片字段就地编辑 */
.admin-grid .card[contenteditable] { outline: none; }
.admin-grid .editable {
  border-radius: 6px; padding: 1px 5px; margin: -1px -5px;
  cursor: text; transition: background .15s, box-shadow .15s;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.admin-grid .editable:hover { background: var(--accent-soft); }
.admin-grid .editable:focus {
  outline: none; background: var(--card-solid);
  box-shadow: var(--ring); white-space: normal;
}
.admin-grid .editable.empty::before {
  content: attr(data-placeholder); color: var(--muted); opacity: .7;
}

/* 删除按钮:编辑态悬浮于卡片右上角 */
.admin-grid .card .ops {
  position: absolute; top: 8px; right: 8px; display: flex; gap: 6px;
  opacity: 0; transition: opacity .15s ease;
}
.admin-grid .card { position: relative; }
.admin-grid .card:hover .ops { opacity: 1; }

/* 拖拽手柄(避开文字选择) */
.drag-handle {
  position: absolute; left: 10px; bottom: 8px;
  display: flex; gap: 3px; padding: 4px 3px;
  cursor: grab; touch-action: none; color: var(--muted);
  opacity: .45; transition: opacity .15s;
  border-radius: 6px;
}
.drag-handle:hover { opacity: 1; color: var(--accent); }
.drag-handle .bar { width: 3px; height: 13px; background: currentColor; border-radius: 2px; }
body.admin-dragging .drag-handle { cursor: grabbing; }

/* 新建卡片(虚线占位) */
.add-card {
  display: flex; align-items: center; justify-content: center;
  border: 1.5px dashed var(--border-strong); border-radius: var(--radius);
  min-height: 72px; cursor: pointer; color: var(--muted); font-size: 13px;
  background: transparent;
  transition: color .15s, border-color .15s, background .15s;
}
.add-card:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }

/* 新建分组行(虚线长条) */
.add-group-row {
  margin-top: -6px; border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius); padding: 12px; text-align: center;
  color: var(--muted); font-size: 13px; cursor: pointer;
  transition: color .15s, border-color .15s, background .15s;
}
.add-group-row:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }

/* 底部工具行 */
.admin-tools { display: flex; justify-content: center; gap: 10px; margin-top: 36px; }

/* 移动端保存条 */
@media (max-width: 640px) {
  .save-bar { position: fixed; left: 50%; transform: translateX(-50%); bottom: 18px; top: auto; margin: 0; width: max-content; }
}