/* ============================================
   SuperAI导航 superainav.com - 全站样式
   极简科技风 | 双主题 | 主色 #165DFF
   ============================================ */

:root {
  --primary: #165DFF;
  --primary-hover: #4080FF;
  --primary-weak: #E8F0FF;

  --bg: #F5F7FA;
  --bg-soft: #EDF1F7;
  --card: #FFFFFF;
  --card-hover: #FFFFFF;
  --text: #1D2129;
  --text-2: #4E5969;
  --text-3: #86909C;
  --border: #E5E9F0;
  --shadow: 0 1px 3px rgba(29, 33, 41, .05);
  --shadow-hover: 0 10px 28px rgba(29, 33, 41, .12);
  --nav-bg: rgba(255, 255, 255, .85);
  --pre-bg: #F2F5FA;

  --green: #00B42A;
  --green-bg: #E8FFEA;
  --orange: #F77234;
  --orange-bg: #FFF3E8;
  --purple: #722ED1;
  --purple-bg: #F5E8FF;
  --cyan: #0FC6C2;
  --cyan-bg: #E8FFFB;
  --red: #F53F3F;
  --gold: #F7BA1E;

  --radius: 12px;
  --radius-sm: 8px;
  --maxw: 1280px;

  /* 首字徽章 8 组配色（柔和底 + 深字） */
  --b0-fg: #165DFF; --b0-bg: #E8F0FF;
  --b1-fg: #7C4DDB; --b1-bg: #F3EDFF;
  --b2-fg: #D6356E; --b2-bg: #FFECF3;
  --b3-fg: #0F8F6D; --b3-bg: #E5F8F1;
  --b4-fg: #D94141; --b4-bg: #FFECEB;
  --b5-fg: #0A7FA0; --b5-bg: #E3F6FB;
  --b6-fg: #B85D06; --b6-bg: #FFF3E1;
  --b7-fg: #5B5BD6; --b7-bg: #EDEDFD;
}

html[data-theme="dark"] {
  --primary: #4080FF;
  --primary-hover: #6AA1FF;
  --primary-weak: rgba(64, 128, 255, .14);

  --bg: #0D1117;
  --bg-soft: #11161D;
  --card: #161D26;
  --card-hover: #182029;
  --text: #D3DAE3;
  --text-2: #9AA5B1;
  --text-3: #6E7A87;
  --border: #232C37;
  --shadow: 0 1px 3px rgba(0, 0, 0, .35);
  --shadow-hover: 0 10px 28px rgba(0, 0, 0, .5);
  --nav-bg: rgba(13, 17, 23, .85);
  --pre-bg: #10161E;

  --green: #4CDB7D;
  --green-bg: rgba(76, 219, 125, .12);
  --orange: #FF9A62;
  --orange-bg: rgba(255, 154, 98, .12);
  --purple: #B58AFF;
  --purple-bg: rgba(181, 138, 255, .12);
  --cyan: #4CE0DC;
  --cyan-bg: rgba(76, 224, 220, .12);

  /* 徽章深色适配：亮字 + 低饱和暗底 */
  --b0-fg: #6AA1FF; --b0-bg: rgba(64, 128, 255, .16);
  --b1-fg: #B58AFF; --b1-bg: rgba(181, 138, 255, .14);
  --b2-fg: #FF7BA3; --b2-bg: rgba(255, 123, 163, .13);
  --b3-fg: #4CDB7D; --b3-bg: rgba(76, 219, 125, .13);
  --b4-fg: #FF8A8A; --b4-bg: rgba(255, 138, 138, .12);
  --b5-fg: #4CE0DC; --b5-bg: rgba(76, 224, 220, .12);
  --b6-fg: #FFB35C; --b6-bg: rgba(255, 179, 92, .13);
  --b7-fg: #9D9DF0; --b7-bg: rgba(157, 157, 240, .13);
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
    "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 15px;
  transition: background .25s ease, color .25s ease;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
::selection { background: var(--primary); color: #fff; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
/* 窄容器：提示词库等阅读型页面，收窄提升聚焦感 */
.container-narrow { max-width: 920px; }

/* ---------- 顶部导航 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 20px;
  height: 60px; display: flex; align-items: center; gap: 18px;
}
.logo {
  display: flex; align-items: center; gap: 8px;
  font-size: 18px; font-weight: 700; color: var(--text);
  flex-shrink: 0;
}
.logo .logo-icon {
  width: 30px; height: 30px; border-radius: 8px;
  background: linear-gradient(135deg, #165DFF, #6AA1FF);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 700;
}
.logo em { font-style: normal; color: var(--primary); }

.nav-links { display: flex; align-items: center; gap: 2px; flex: 1; }
.nav-links a {
  padding: 6px 12px; border-radius: 8px;
  font-size: 14px; color: var(--text-2);
  transition: color .15s, background .15s;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--primary); background: var(--primary-weak); }
.nav-links a.active { color: var(--primary); font-weight: 600; background: var(--primary-weak); }

.nav-right { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

/* 导航内小搜索框（内页） */
.nav-search { position: relative; }
.nav-search input {
  width: 200px; height: 34px; padding: 0 12px 0 32px;
  border: 1px solid var(--border); border-radius: 17px;
  background: var(--bg); color: var(--text);
  font-size: 13px; outline: none;
  transition: border-color .15s, width .2s;
}
.nav-search input:focus { border-color: var(--primary); width: 240px; }
.nav-search .search-ico {
  position: absolute; left: 11px; top: 50%; transform: translateY(-50%);
  color: var(--text-3); pointer-events: none; display: flex;
}

.theme-btn {
  width: 34px; height: 34px; border-radius: 50%;
  border: 1px solid var(--border); background: var(--card);
  color: var(--text-2); display: flex; align-items: center; justify-content: center;
  transition: color .15s, border-color .15s, transform .15s;
}
.theme-btn:hover { color: var(--primary); border-color: var(--primary); transform: rotate(15deg); }
.theme-btn .ico-moon { display: none; }
html[data-theme="dark"] .theme-btn .ico-sun { display: none; }
html[data-theme="dark"] .theme-btn .ico-moon { display: flex; }

.menu-btn {
  display: none; width: 34px; height: 34px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--card);
  color: var(--text-2); align-items: center; justify-content: center;
}

/* ---------- 移动端菜单 ---------- */
.mobile-menu {
  display: none; border-top: 1px solid var(--border);
  padding: 10px 20px 16px; background: var(--nav-bg);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}
.mobile-menu.open { display: block; }
.mobile-menu .mm-search { position: relative; margin-bottom: 10px; }
.mobile-menu .mm-search input {
  width: 100%; height: 38px; padding: 0 12px 0 34px;
  border: 1px solid var(--border); border-radius: 10px;
  background: var(--bg); color: var(--text); font-size: 14px; outline: none;
}
.mobile-menu .mm-search .search-ico {
  position: absolute; left: 11px; top: 50%; transform: translateY(-50%);
  color: var(--text-3); display: flex;
}
.mobile-menu a {
  display: block; padding: 9px 10px; border-radius: 8px;
  font-size: 14px; color: var(--text-2);
}
.mobile-menu a.active { color: var(--primary); background: var(--primary-weak); font-weight: 600; }

/* ---------- 导航下拉：站点分类 ---------- */
.nav-drop { position: relative; }
.nav-drop-tt {
  display: flex; align-items: center; gap: 5px;
  padding: 6px 12px; border-radius: 8px;
  font-size: 14px; color: var(--text-2);
  cursor: pointer; user-select: none; white-space: nowrap;
  transition: color .15s, background .15s;
}
.nav-drop-tt:hover, .nav-drop-tt:focus-visible {
  color: var(--primary); background: var(--primary-weak); outline: none;
}
.nav-drop.active .nav-drop-tt {
  color: var(--primary); font-weight: 600; background: var(--primary-weak);
}
.nav-drop .caret { transition: transform .18s ease; }
.nav-drop:hover .caret, .nav-drop:focus-within .caret { transform: rotate(180deg); }
.drop-panel {
  position: absolute; top: calc(100% + 8px); left: 0; z-index: 90;
  min-width: 224px; padding: 6px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; box-shadow: var(--shadow-hover);
  opacity: 0; visibility: hidden; transform: translateY(6px);
  transition: opacity .18s ease, transform .18s ease, visibility .18s;
}
/* 悬停桥：鼠标从触发词移向面板时不穿过空隙导致菜单关闭 */
.drop-panel::before {
  content: ""; position: absolute; top: -10px; left: 0; right: 0; height: 10px;
}
.nav-drop:hover .drop-panel, .nav-drop:focus-within .drop-panel {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.dp-i {
  display: flex; align-items: center; gap: 9px;
  padding: 8px 10px; border-radius: 8px;
  font-size: 13.5px; color: var(--text-2);
  transition: background .15s, color .15s;
}
.dp-i:hover { background: var(--primary-weak); color: var(--primary); }
.dp-ico {
  width: 26px; height: 26px; border-radius: 7px; background: var(--bg-soft);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; flex-shrink: 0;
}
.dp-nm { font-weight: 500; }
.dp-n { margin-left: auto; font-size: 11.5px; color: var(--text-3); }

/* ---------- 工具类 & 首页分类区块 ---------- */
.sr-only {
  position: absolute; width: 1px; height: 1px; margin: -1px;
  padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0);
  white-space: nowrap; border: 0;
}
.cb-ico {
  display: inline-flex; align-items: center; justify-content: center;
  width: 24px; height: 24px; border-radius: 7px; background: var(--bg-soft);
  font-size: 13px; margin-right: 8px; vertical-align: -4px;
}
.cat-block { scroll-margin-top: 76px; }
.section-head a.more { cursor: pointer; }

/* 提示词页：横向分类药丸导航（替代侧栏） */
.prompt-nav {
  position: sticky; top: 61px; z-index: 20;
  display: flex; gap: 8px; overflow-x: auto;
  padding: 10px 2px; margin-bottom: 6px;
  background: var(--bg); scrollbar-width: none;
  box-shadow: 0 8px 10px -12px rgba(0, 0, 0, .18);
}
.prompt-nav::-webkit-scrollbar { display: none; }
.pn-i {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: 17px; border: 1px solid var(--border);
  background: var(--card); color: var(--text-2); font-size: 13px;
  white-space: nowrap; flex-shrink: 0;
  transition: color .15s, border-color .15s;
}
.pn-i:hover { color: var(--primary); border-color: var(--primary); }
.pn-n { font-size: 11px; color: var(--text-3); }
.section[id^="g-"] { scroll-margin-top: 148px; }

/* ---------- 区块标题 ---------- */
.section { padding: 20px 0 4px; }
.section-head {
  display: flex; align-items: baseline; gap: 10px; margin-bottom: 11px;
}
.section-head h2 { font-size: 16.5px; font-weight: 700; color: var(--text); }
.section-head .more {
  margin-left: auto; font-size: 12.5px; color: var(--text-3);
  transition: color .15s;
}
.section-head .more:hover { color: var(--primary); }

/* ---------- 两栏外壳：左侧分类目录 + 内容列 ---------- */
.shell { padding-top: 76px; }
.shell-grid {
  display: grid; grid-template-columns: 216px minmax(0, 1fr);
  gap: 24px; align-items: start;
}
.side {
  position: sticky; top: 76px;
  padding: 4px 0;
  max-height: calc(100vh - 96px); overflow-y: auto;
  overscroll-behavior: contain;
}
.side-nav { display: flex; flex-direction: column; }
.side-tt {
  font-size: 12px; font-weight: 600; color: var(--text-3);
  letter-spacing: .5px; padding: 10px 12px 6px;
}
.side-i {
  display: flex; align-items: center; gap: 9px;
  padding: 9px 12px; border-radius: 8px;
  font-size: 13.5px; color: var(--text-2);
  transition: background .15s, color .15s;
}
.side-i:hover { background: var(--primary-weak); color: var(--primary); }
.side-i.active { background: var(--primary-weak); color: var(--primary); font-weight: 600; }
.side-ico {
  width: 22px; height: 22px; border-radius: 6px; background: var(--bg-soft);
  display: flex; align-items: center; justify-content: center;
  font-size: 12.5px; flex-shrink: 0;
}
.side-nm {
  flex: 1; min-width: 0;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.side-n { font-size: 11.5px; color: var(--text-3); font-weight: 400; }
.side-i.active .side-n { color: var(--primary); }

/* ---------- 工具卡片（横向紧凑小卡） ---------- */
.tool-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(178px, 1fr)); gap: 10px;
}
.tool-card {
  position: relative;
  display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 2px 9px; align-items: center;
  padding: 10px 11px 9px; border-radius: 11px;
  background: var(--card); border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: transform .16s ease, box-shadow .16s ease, border-color .16s;
}
.tool-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(22, 93, 255, .4);
}
.tool-card .tool-link {
  position: absolute; inset: 0; z-index: 1; border-radius: 12px;
}
.t-badge {
  grid-column: 1; grid-row: 1;
  position: relative; overflow: hidden;
  width: 34px; height: 34px; border-radius: 9px;
  display: grid; place-items: center;
  font-size: 14px; font-weight: 700; user-select: none;
  background: var(--b0-bg); color: var(--b0-fg);
}
/* 有本地图标时，图覆盖首字徽章；无图标的站自然露出首字 */
.t-badge img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; border-radius: inherit;
}
.t-badge[data-c="0"] { background: var(--b0-bg); color: var(--b0-fg); }
.t-badge[data-c="1"] { background: var(--b1-bg); color: var(--b1-fg); }
.t-badge[data-c="2"] { background: var(--b2-bg); color: var(--b2-fg); }
.t-badge[data-c="3"] { background: var(--b3-bg); color: var(--b3-fg); }
.t-badge[data-c="4"] { background: var(--b4-bg); color: var(--b4-fg); }
.t-badge[data-c="5"] { background: var(--b5-bg); color: var(--b5-fg); }
.t-badge[data-c="6"] { background: var(--b6-bg); color: var(--b6-fg); }
.t-badge[data-c="7"] { background: var(--b7-bg); color: var(--b7-fg); }
.t-body { grid-column: 2; grid-row: 1; min-width: 0; }
.tool-card .tool-name {
  font-size: 13.5px; font-weight: 600; color: var(--text); line-height: 1.35;
  display: flex; align-items: center; gap: 5px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.tool-card .tool-name .ext-ico {
  margin-left: auto; color: var(--primary); flex-shrink: 0;
  opacity: 0; transition: opacity .16s;
}
.tool-card:hover .tool-name .ext-ico { opacity: 1; }
.tool-card .tool-desc {
  font-size: 11.5px; color: var(--text-2); line-height: 1.45; margin-top: 1px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.tool-meta {
  grid-column: 1 / -1; grid-row: 2;
  display: flex; align-items: center; flex-wrap: wrap; gap: 4px 5px;
  row-gap: 3px;
  margin-top: 5px;
  font-size: 10.5px; color: var(--text-3);
}
.tool-tags { display: flex; flex-wrap: wrap; gap: 4px; min-width: 0; overflow: hidden; }
.tag {
  font-size: 9.5px; padding: 1px 5px; border-radius: 4px;
  color: var(--text-3); background: var(--bg-soft);
  border: 1px solid var(--border); white-space: nowrap;
}
.tag-access-direct { color: var(--green); background: var(--green-bg); border-color: transparent; }
.tag-access-proxy { color: var(--orange); background: var(--orange-bg); border-color: transparent; }
.tag-price-free { color: var(--primary); background: var(--primary-weak); border-color: transparent; }
.tag-price-freemium { color: var(--cyan); background: var(--cyan-bg); border-color: transparent; }
.tag-price-paid { color: var(--purple); background: var(--purple-bg); border-color: transparent; }
.tool-star { margin-left: auto; color: var(--gold); font-weight: 500; white-space: nowrap; font-size: 10.5px; }
.tool-meta time { white-space: nowrap; letter-spacing: .2px; font-size: 10px; }

/* ---------- 分类页 ---------- */
.page-hero {
  padding: 26px 0 0;
}
.page-hero .ph-inner { padding: 0; }
.breadcrumb { font-size: 12.5px; color: var(--text-3); margin-bottom: 8px; }
.breadcrumb a { color: var(--text-3); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { margin: 0 6px; }
.page-hero h1 { font-size: 20px; font-weight: 700; color: var(--text); }
.page-hero .ph-desc { margin-top: 4px; font-size: 12.5px; color: var(--text-2); }

.filter-bar {
  margin-top: 14px; padding: 2px 0;
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
}
.filter-btn {
  padding: 6px 16px; border-radius: 17px; border: 1px solid var(--border);
  background: var(--card); color: var(--text-2); font-size: 13px;
  transition: all .15s;
}
.filter-btn:hover { color: var(--primary); border-color: var(--primary); }
.filter-btn.active {
  background: var(--primary); border-color: var(--primary);
  color: #fff; font-weight: 600;
}
.filter-count { margin-left: auto; font-size: 12px; color: var(--text-3); }

/* ---------- 提示词页 ---------- */
.prompt-card {
  display: flex; flex-direction: column; gap: 8px;
  padding: 16px; border-radius: 10px;
  background: var(--card); border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: transform .16s ease, box-shadow .16s ease, border-color .16s;
}
.prompt-card:hover {
  transform: translateY(-3px); box-shadow: var(--shadow-hover);
  border-color: rgba(22, 93, 255, .35);
}
.prompt-card h3 { font-size: 15px; font-weight: 700; color: var(--text); }
.prompt-scene {
  font-size: 11.5px; color: var(--text-3);
  display: flex; align-items: center; gap: 6px;
}
.prompt-scene .tag { flex-shrink: 0; }
.prompt-content {
  font-family: inherit; font-size: 12.5px; line-height: 1.65;
  color: var(--text-2); background: var(--pre-bg);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 12px; white-space: pre-wrap; word-break: break-word;
  max-height: 170px; overflow-y: auto;
  scrollbar-width: thin; scrollbar-color: var(--border) transparent;
}
.prompt-content::-webkit-scrollbar { width: 6px; }
.prompt-content::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
.prompt-content::-webkit-scrollbar-track { background: transparent; }
.prompt-foot {
  display: flex; align-items: center; gap: 10px; margin-top: auto;
}
.copy-btn {
  padding: 6px 14px; border: none; border-radius: var(--radius-sm);
  background: var(--primary); color: #fff; font-size: 12.5px; font-weight: 600;
  display: flex; align-items: center; gap: 5px;
  transition: background .15s;
}
.copy-btn:hover { background: var(--primary-hover); }
.copy-btn.copied { background: var(--green); }
.prompt-tip {
  font-size: 11.5px; color: var(--text-3);
  display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical;
  overflow: hidden;
}
.prompt-group-title {
  display: flex; align-items: center; gap: 8px;
  margin: 24px 0 12px; font-size: 17px; font-weight: 700; color: var(--text);
}
.prompt-group-title::after {
  content: ""; flex: 1; height: 1px; background: var(--border);
}
.prompt-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px;
}

/* ---------- 提交页表单 ---------- */
.submit-wrap {
  max-width: 640px; margin: 0 auto;
  padding: 26px 26px 34px; border-radius: var(--radius);
  background: var(--card); border: 1px solid var(--border); box-shadow: var(--shadow);
}
.submit-wrap .form-tip {
  padding: 12px 14px; border-radius: var(--radius-sm);
  background: var(--primary-weak); color: var(--text-2); font-size: 13px;
  margin-bottom: 20px; line-height: 1.7;
}
.form-item { margin-bottom: 16px; }
.form-item label {
  display: block; font-size: 13px; font-weight: 600;
  color: var(--text); margin-bottom: 6px;
}
.form-item label .req { color: var(--red); margin-left: 2px; }
.form-item input, .form-item select, .form-item textarea {
  width: 100%; padding: 10px 12px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--bg); color: var(--text); font-size: 14px;
  font-family: inherit; outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.form-item input:focus, .form-item select:focus, .form-item textarea:focus {
  border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-weak);
}
.form-item textarea { resize: vertical; min-height: 84px; }
.form-actions { display: flex; gap: 10px; margin-top: 22px; flex-wrap: wrap; }
.btn-primary {
  padding: 11px 26px; border: none; border-radius: var(--radius-sm);
  background: var(--primary); color: #fff; font-size: 14px; font-weight: 600;
  transition: background .15s;
}
.btn-primary:hover { background: var(--primary-hover); }
.btn-ghost {
  padding: 11px 26px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--card);
  color: var(--text-2); font-size: 14px;
  transition: color .15s, border-color .15s;
}
.btn-ghost:hover { color: var(--primary); border-color: var(--primary); }

/* ---------- 关于页 ---------- */
.about-wrap { max-width: 780px; margin: 0 auto; }
.about-card {
  padding: 26px 28px; margin-bottom: 18px;
  border-radius: var(--radius); background: var(--card);
  border: 1px solid var(--border); box-shadow: var(--shadow);
}
.about-card h2 {
  font-size: 18px; font-weight: 700; color: var(--text);
  margin-bottom: 12px; display: flex; align-items: center; gap: 8px;
  scroll-margin-top: 80px;
}
.about-card p, .about-card li {
  font-size: 14px; color: var(--text-2); line-height: 1.85;
}
.about-card ul, .about-card ol { padding-left: 20px; }
.about-card li { margin-bottom: 6px; }
.about-card strong { color: var(--text); }
.about-card a { color: var(--primary); }

/* ---------- 搜索结果区 ---------- */
#search-results { padding: 84px 0 30px; }
#search-results .sr-head {
  display: flex; align-items: baseline; gap: 10px; margin: 8px 0 16px;
}
#search-results .sr-head h2 { font-size: 20px; color: var(--text); }
#search-results .sr-head .sr-count { font-size: 13px; color: var(--text-3); }
.sr-empty {
  padding: 60px 0; text-align: center; color: var(--text-3); font-size: 14px;
}
.sr-empty .big { font-size: 40px; margin-bottom: 12px; }

.no-result-tip {
  grid-column: 1 / -1; padding: 40px 0; text-align: center;
  color: var(--text-3); font-size: 14px;
}

/* ---------- 空状态提示 ---------- */
main.hidden-by-search { display: none; }

/* ---------- 页脚 ---------- */
footer {
  margin-top: 36px; border-top: 1px solid var(--border);
  background: var(--bg-soft);
}
.footer-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 36px 20px 0;
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 30px;
}
.footer-brand .logo { margin-bottom: 12px; }
.footer-brand p { font-size: 13px; color: var(--text-3); line-height: 1.8; max-width: 320px; }
.footer-col h4 { font-size: 14px; color: var(--text); margin-bottom: 12px; font-weight: 600; }
.footer-col a {
  display: block; font-size: 13px; color: var(--text-3);
  padding: 4px 0; transition: color .15s;
}
.footer-col a:hover { color: var(--primary); }
.footer-bottom {
  max-width: var(--maxw); margin: 0 auto; padding: 20px;
  border-top: 1px solid var(--border); margin-top: 30px;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 8px; font-size: 12px; color: var(--text-3);
}
.footer-bottom a { color: var(--text-3); }
.footer-bottom a:hover { color: var(--primary); }

/* ---------- Toast ---------- */
#toast {
  position: fixed; left: 50%; bottom: 44px; transform: translateX(-50%) translateY(16px);
  z-index: 999; padding: 10px 22px; border-radius: 22px;
  background: var(--text); color: var(--bg);
  font-size: 13px; box-shadow: var(--shadow-hover);
  opacity: 0; pointer-events: none;
  transition: opacity .22s ease, transform .22s ease;
}
html[data-theme="dark"] #toast { background: #2A3542; color: #D3DAE3; }
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- 404 ---------- */
.nf-wrap { min-height: 70vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 100px 20px 40px; }
.nf-code { font-size: 72px; font-weight: 800; color: var(--primary); }
.nf-wrap h1 { font-size: 22px; margin: 10px 0 8px; color: var(--text); }
.nf-wrap p { color: var(--text-3); font-size: 14px; margin-bottom: 24px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .nav-search input { width: 160px; }
  .nav-search input:focus { width: 180px; }
}

@media (max-width: 960px) {
  /* 窄屏收起左侧分类目录，改由顶部导航下拉 / 移动端菜单承担 */
  .shell-grid { grid-template-columns: minmax(0, 1fr); }
  .side { display: none; }
}

@media (max-width: 768px) {
  .nav-links, .nav-search { display: none; }
  .menu-btn { display: flex; }
  .section-head h2 { font-size: 15.5px; }
  .page-hero h1 { font-size: 18px; }
  .prompt-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 22px; }
  .filter-bar { margin-top: 10px; }
  .tool-grid { gap: 10px; }
  .tool-card { grid-template-columns: 32px minmax(0, 1fr); min-height: 68px; padding: 9px 11px 7px; }
  .t-badge { width: 32px; height: 32px; border-radius: 9px; font-size: 14px; }
}

@media (max-width: 560px) {
  .form-actions .btn-primary, .form-actions .btn-ghost { flex: 1; text-align: center; }
  .tool-meta { flex-wrap: wrap; row-gap: 4px; }
  .tool-star { margin-left: 0; }
}

/* 横向溢出保护（只加裁剪，不改 max-width——否则会覆盖容器宽度上限） */
body, .nav-inner, .container { overflow-x: clip; }

/* ============================================
   v7 视觉升级层（2026-10-03）
   顶部氛围光 / 分类彩色体系 / 渐变按钮 / 胶囊入口 /
   卡片细节 / 返回顶部 —— 追加层，不破坏上方旧规则
   ============================================ */

/* 顶部淡蓝氛围光，让页面不再是一块平灰 */
body::before {
  content: ""; position: fixed; top: 0; left: 0; right: 0; height: 420px;
  background: linear-gradient(180deg, rgba(22, 93, 255, .055), rgba(22, 93, 255, 0));
  pointer-events: none; z-index: 0;
}
html[data-theme="dark"] body::before {
  background: linear-gradient(180deg, rgba(64, 128, 255, .08), rgba(64, 128, 255, 0));
}

/* 主操作按钮统一渐变 */
.btn-primary, .copy-btn { background: linear-gradient(135deg, var(--primary), #4080FF); }
.btn-primary:hover, .copy-btn:hover { background: linear-gradient(135deg, var(--primary-hover), #5B8CFF); }
.copy-btn.copied { background: var(--green); }

/* 分类彩色体系：左目录 / 右侧区块头图标按分类着色（badge 色板自带深浅适配） */
.side-ico, .cb-ico { transition: background .15s, color .15s; }
.side-i[href="#text"] .side-ico,      .cat-block#text .cb-ico      { background: var(--b0-bg); color: var(--b0-fg); }
.side-i[href="#image"] .side-ico,     .cat-block#image .cb-ico     { background: var(--b1-bg); color: var(--b1-fg); }
.side-i[href="#video"] .side-ico,     .cat-block#video .cb-ico     { background: var(--b2-bg); color: var(--b2-fg); }
.side-i[href="#office"] .side-ico,    .cat-block#office .cb-ico    { background: var(--b3-bg); color: var(--b3-fg); }
.side-i[href="#dev"] .side-ico,       .cat-block#dev .cb-ico       { background: var(--b6-bg); color: var(--b6-fg); }
.side-i[href="#agent"] .side-ico,     .cat-block#agent .cb-ico     { background: var(--b5-bg); color: var(--b5-fg); }
.side-i[href="#search"] .side-ico,    .cat-block#search .cb-ico    { background: var(--b4-bg); color: var(--b4-fg); }
.side-i[href="#translate"] .side-ico, .cat-block#translate .cb-ico { background: var(--b7-bg); color: var(--b7-fg); }

/* 左目录激活项：左侧 3px 竖条指示器 */
.side-i { position: relative; }
.side-i.active::before {
  content: ""; position: absolute; left: 0; top: 22%; bottom: 22%;
  width: 3px; border-radius: 2px; background: var(--primary);
}

/* 区块头「全部 N 个」改胶囊按钮 */
.section-head a.more {
  padding: 4px 12px; border-radius: 14px;
  border: 1px solid var(--border); background: var(--card);
  transition: color .15s, border-color .15s, background .15s;
}
.section-head a.more:hover { color: var(--primary); border-color: var(--primary); background: var(--primary-weak); }

/* 区块标题更醒目 */
.section-head h2 { font-size: 17px; }

/* 徽章细节：内描边 + hover 微放大 */
.t-badge { box-shadow: inset 0 0 0 1px rgba(29, 33, 41, .05); transition: transform .16s ease; }
html[data-theme="dark"] .t-badge { box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .07); }
.tool-card:hover .t-badge { transform: scale(1.06); }

/* 星级金色，提升精致感 */
.tool-star { color: var(--gold); }

/* 内页头部：淡蓝渐变 + 底部分隔线，头部有记忆点 */
.page-hero {
  padding: 30px 0 22px;
  background: linear-gradient(180deg, rgba(22, 93, 255, .05), rgba(22, 93, 255, 0));
  border-bottom: 1px solid var(--border);
}
html[data-theme="dark"] .page-hero {
  background: linear-gradient(180deg, rgba(64, 128, 255, .09), rgba(64, 128, 255, 0));
}
.page-hero h1 { font-size: 22px; letter-spacing: .2px; }
.page-hero .ph-desc { font-size: 13px; }
.filter-bar { margin-top: 18px; }

/* 导航搜索框提亮 */
.nav-search input { background: var(--card); }

/* 提示词卡片微调 */
.prompt-card { border-radius: 12px; }
.prompt-card h3 { font-size: 15.5px; }
.prompt-scene .tag { background: var(--primary-weak); color: var(--primary); border-color: transparent; }

/* 返回顶部 */
#back-top {
  position: fixed; right: 22px; bottom: 32px; z-index: 90;
  width: 40px; height: 40px; border-radius: 50%;
  border: 1px solid var(--border); background: var(--card);
  color: var(--text-2); box-shadow: var(--shadow-hover);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: opacity .2s, transform .2s, visibility .2s, color .15s, border-color .15s;
}
#back-top.show { opacity: 1; visibility: visible; transform: none; }
#back-top:hover { color: var(--primary); border-color: var(--primary); }

@media (max-width: 768px) {
  .page-hero h1 { font-size: 18px; }
  #back-top { right: 14px; bottom: 24px; }
}

/* ============================================
   v8 重设计层（2026-10 深夜，参考 ai-bot.cn / faxianai.com / aigc.cn）
   首页大搜索区 / 卡片网格密化 / 品牌渐变顶条
   ============================================ */

/* 品牌渐变顶条（aigc.cn 风格，3px 提升品牌感） */
.nav::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, #165DFF, #722ED1 30%, #0FC6C2 60%, #F77234);
  opacity: .85;
}

/* 首页大搜索区（横跨全宽，侧栏从其下方开始） */
.home-hero {
  /* hero 在 .shell 外，需自留固定导航(61px)的高度，否则标题被盖住 */
  padding: 96px 20px 30px; text-align: center;
}
.hh-brand {
  font-size: 34px; font-weight: 800; letter-spacing: .5px; color: var(--text);
  line-height: 1.2;
}
.hh-brand em { font-style: normal; color: var(--primary); }
.hh-sub {
  margin-top: 8px; font-size: 13.5px; color: var(--text-3);
}
.hh-search {
  position: relative; max-width: 520px; margin: 20px auto 0;
}
.hh-search input {
  width: 100%; height: 48px; padding: 0 88px 0 44px;
  border: 1px solid var(--border); border-radius: 24px;
  background: var(--card); color: var(--text); font-size: 14.5px;
  outline: none; box-shadow: var(--shadow);
  transition: border-color .15s, box-shadow .15s;
}
.hh-search input:focus {
  border-color: var(--primary); box-shadow: 0 0 0 4px var(--primary-weak);
}
.hh-search .search-ico {
  position: absolute; left: 17px; top: 50%; transform: translateY(-50%);
  width: 18px; height: 18px; color: var(--text-3); pointer-events: none; display: flex;
}
.hh-go {
  position: absolute; right: 5px; top: 5px; bottom: 5px;
  padding: 0 22px; border: none; border-radius: 19px;
  background: linear-gradient(135deg, var(--primary), #4080FF);
  color: #fff; font-size: 13.5px; font-weight: 600;
  transition: background .15s;
}
.hh-go:hover { background: linear-gradient(135deg, var(--primary-hover), #5B8CFF); }
.hh-chips {
  margin-top: 14px; display: flex; justify-content: center; gap: 8px; flex-wrap: wrap;
}
.hh-chip {
  padding: 5px 14px; border-radius: 15px;
  border: 1px solid var(--border); background: var(--card);
  color: var(--text-2); font-size: 12.5px;
  transition: color .15s, border-color .15s, background .15s;
}
.hh-chip:hover { color: var(--primary); border-color: var(--primary); background: var(--primary-weak); }

@media (max-width: 768px) {
  .home-hero { padding: 78px 16px 22px; }
  .hh-brand { font-size: 26px; }
  .hh-sub { font-size: 12px; }
  .hh-search { max-width: 100%; }
  /* 移动端卡片 2 列（mini 卡） */
  .tool-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .tool-card { padding: 9px 10px 8px; }
  .hh-search input { height: 44px; padding-right: 76px; }
}

/* 展示型邮箱（不发邮件，纯展示便于复制） */
.mail-text {
  font-family: Consolas, Menlo, monospace; font-size: 15px; letter-spacing: .3px;
  color: var(--primary); background: var(--primary-weak);
  padding: 2px 10px; border-radius: 6px;
}
.mail-tip { font-size: 12.5px; color: var(--text-3); margin-left: 6px; }