/* ============================================================
   万能工具箱 · 全局样式
   ============================================================ */

/* ---------- 设计变量 ---------- */
:root {
  --bg: #f5f6fb;
  --bg-card: #ffffff;
  --bg-soft: #f2f4f9;
  --bg-code: #f8fafc;
  --text: #111827;
  --text-2: #5b6478;
  --text-3: #98a0b3;
  --border: #e8eaf2;
  --border-strong: #d9dce8;

  --primary: #4f46e5;
  --primary-2: #9333ea;
  --primary-soft: rgba(79, 70, 229, 0.08);
  --ring: rgba(79, 70, 229, 0.16);
  --gradient: linear-gradient(135deg, var(--primary), var(--primary-2));

  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.04), 0 1px 3px rgba(16, 24, 40, 0.05);
  --shadow: 0 4px 12px -2px rgba(16, 24, 40, 0.06), 0 2px 6px -2px rgba(16, 24, 40, 0.04);
  --shadow-hover: 0 18px 36px -14px rgba(79, 70, 229, 0.32);
  --shadow-lg: 0 24px 56px -20px rgba(16, 24, 40, 0.22);

  --radius-sm: 10px;
  --radius: 14px;
  --radius-lg: 18px;
  --header-h: 64px;
  --header-bg: rgba(255, 255, 255, 0.76);
  --mono: "SFMono-Regular", "JetBrains Mono", Consolas, "Cascadia Mono", Menlo, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

html[data-theme="dark"] {
  --bg: #0a0c14;
  --bg-card: #131722;
  --bg-soft: #1b2030;
  --bg-code: #0e1220;
  --text: #e9ecf5;
  --text-2: #9aa3bd;
  --text-3: #6f7891;
  --border: #232a3d;
  --border-strong: #2e3750;

  --primary: #818cf8;
  --primary-2: #c084fc;
  --primary-soft: rgba(129, 140, 248, 0.13);
  --ring: rgba(129, 140, 248, 0.22);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3), 0 1px 3px rgba(0, 0, 0, 0.24);
  --shadow: 0 4px 14px -2px rgba(0, 0, 0, 0.4);
  --shadow-hover: 0 18px 36px -14px rgba(0, 0, 0, 0.65);
  --shadow-lg: 0 28px 60px -20px rgba(0, 0, 0, 0.7);

  --header-bg: rgba(10, 12, 20, 0.72);
}

/* ---------- 基础 ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--sans);
  font-size: 15px;
  background:
    radial-gradient(920px 520px at 6% -12%, rgba(99, 102, 241, 0.10), transparent 62%),
    radial-gradient(820px 480px at 96% -6%, rgba(192, 132, 252, 0.10), transparent 62%),
    var(--bg);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.25s, color 0.25s;
}
html[data-theme="dark"] body {
  background:
    radial-gradient(920px 520px at 6% -12%, rgba(99, 102, 241, 0.16), transparent 62%),
    radial-gradient(820px 480px at 96% -6%, rgba(168, 85, 247, 0.14), transparent 62%),
    var(--bg);
  background-attachment: fixed;
}
html[data-theme="dark"] .cat-nav a.active {
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  box-shadow: 0 8px 18px -10px rgba(0, 0, 0, 0.9);
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
img, svg { max-width: 100%; }
::selection { background: rgba(79, 70, 229, 0.22); }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 99px;
  border: 3px solid transparent;
  background-clip: content-box;
}
::-webkit-scrollbar-thumb:hover { background: var(--text-3); background-clip: content-box; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 14px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  flex-shrink: 0;
}
.logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: var(--gradient);
  box-shadow: 0 6px 14px -6px rgba(79, 70, 229, 0.7);
  flex-shrink: 0;
}
.logo-mark svg { width: 20px; height: 20px; display: block; }
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.2px;
  color: var(--text);
}
.logo-sub {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--text-3);
  margin-top: 2px;
}
.logo .badge {
  background: var(--gradient);
  color: #fff;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 99px;
  font-weight: 600;
}

.header-nav { display: flex; align-items: center; gap: 2px; margin-left: 8px; }
.header-nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
  padding: 8px 12px;
  border-radius: 9px;
  transition: background 0.16s, color 0.16s;
}
.header-nav a:hover { background: var(--bg-soft); color: var(--text); }
.header-nav a.active { color: var(--primary); background: var(--primary-soft); }

.header-search { flex: 1; max-width: 360px; margin-left: auto; position: relative; min-width: 0; }
.header-search input {
  width: 100%;
  height: 40px;
  padding: 0 14px 0 38px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--bg-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2398a0b3' stroke-width='2' stroke-linecap='round'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cpath d='m20 20-3.6-3.6'/%3E%3C/svg%3E") no-repeat 13px center;
  background-size: 16px;
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: border-color 0.18s, box-shadow 0.18s, background-color 0.18s;
}
.header-search input::placeholder { color: var(--text-3); }
.header-search input:focus {
  border-color: var(--primary);
  background-color: var(--bg-card);
  box-shadow: 0 0 0 4px var(--ring);
}
.header-search input::-webkit-search-cancel-button { -webkit-appearance: none; }

.search-suggest {
  position: absolute;
  top: 48px;
  left: 0;
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 6px;
  overflow: hidden auto;
  max-height: 340px;
  display: none;
  z-index: 120;
}
.search-suggest.open { display: block; animation: pop 0.14s ease-out; }
.search-suggest a {
  display: flex;
  gap: 11px;
  padding: 9px 11px;
  border-radius: 9px;
  font-size: 14px;
  align-items: center;
  transition: background 0.14s;
}
.search-suggest a:hover { background: var(--bg-soft); }
.search-suggest a > span:first-child {
  width: 26px;
  text-align: center;
  font-size: 16px;
  flex-shrink: 0;
}
.search-suggest a b { font-weight: 600; display: block; line-height: 1.35; }
.search-suggest a small {
  display: block;
  color: var(--text-3);
  font-size: 12px;
  line-height: 1.35;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 11px;
  flex-shrink: 0;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  color: var(--text-2);
  display: grid;
  place-items: center;
  transition: background 0.16s, color 0.16s, border-color 0.16s, transform 0.2s;
}
.theme-toggle:hover { color: var(--primary); border-color: var(--primary); transform: rotate(12deg); }
.theme-toggle svg { width: 18px; height: 18px; }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative;
  text-align: center;
  padding: clamp(56px, 8vw, 88px) 24px 44px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: -140px 0 auto 0;
  height: 420px;
  background:
    radial-gradient(420px 200px at 28% 40%, rgba(99, 102, 241, 0.18), transparent 70%),
    radial-gradient(420px 200px at 72% 30%, rgba(192, 132, 252, 0.18), transparent 70%);
  filter: blur(10px);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--border-strong) 1px, transparent 1px);
  background-size: 24px 24px;
  -webkit-mask-image: radial-gradient(ellipse 55% 60% at 50% 30%, #000 10%, transparent 72%);
  mask-image: radial-gradient(ellipse 55% 60% at 50% 30%, #000 10%, transparent 72%);
  opacity: 0.55;
  pointer-events: none;
}
.hero > * { position: relative; z-index: 1; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-2);
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 6px 14px 6px 10px;
  border-radius: 99px;
  box-shadow: var(--shadow-sm);
}
.hero-badge .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.16);
  animation: pulse 2.4s ease-in-out infinite;
}
.hero h1 {
  margin-top: 20px;
  font-size: clamp(36px, 6vw, 58px);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -1.5px;
  background: linear-gradient(135deg, var(--text) 18%, var(--primary) 62%, var(--primary-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lead {
  color: var(--text-2);
  margin: 16px auto 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.75;
  max-width: 640px;
}
.hero-actions {
  margin-top: 26px;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}
.hero-actions a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-2);
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 8px 15px;
  border-radius: 99px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.18s, border-color 0.18s, color 0.18s, box-shadow 0.18s;
}
.hero-actions a:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: var(--shadow);
}
.hero-actions a .arr { color: var(--text-3); font-size: 12px; }

.hero .stats {
  margin: 30px auto 0;
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0;
  font-size: 13px;
  color: var(--text-2);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 9px 6px;
  box-shadow: var(--shadow-sm);
}
.hero .stats span {
  display: inline-flex;
  align-items: baseline;
  gap: 5px;
  padding: 0 16px;
  border-right: 1px solid var(--border);
}
.hero .stats span:last-child { border-right: none; }
.hero .stats b { font-size: 15px; font-weight: 750; color: var(--text); }

/* ---------- 布局与分类 ---------- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; width: 100%; }
.layout {
  display: flex;
  gap: 30px;
  padding: 34px 0 64px;
  align-items: flex-start;
  scroll-margin-top: calc(var(--header-h) + 16px);
}
.cat-nav {
  position: sticky;
  top: calc(var(--header-h) + 18px);
  width: 200px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.cat-nav::before {
  content: "工具分类";
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--text-3);
  padding: 6px 10px 8px;
}
.cat-nav a {
  padding: 9px 11px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
  display: flex;
  align-items: center;
  gap: 9px;
  transition: background 0.15s, color 0.15s;
}
.cat-nav a .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent, var(--text-3));
  flex-shrink: 0;
  opacity: 0.85;
}
.cat-nav a:hover { background: var(--bg-soft); color: var(--text); }
.cat-nav a.active {
  background: var(--gradient);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 8px 18px -10px rgba(79, 70, 229, 0.9);
}
.cat-nav a.active .dot { background: #fff; opacity: 1; }
.tools-area { flex: 1; min-width: 0; }

.cat-block {
  margin-bottom: 40px;
  scroll-margin-top: calc(var(--header-h) + 20px);
  --accent: var(--primary);
  --accent-soft: var(--primary-soft);
}
.cat-block:last-child { margin-bottom: 0; }
.cat-block h2 {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.2px;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 9px;
}
.cat-block h2::before {
  content: "";
  width: 4px;
  height: 16px;
  border-radius: 99px;
  background: var(--accent);
  flex-shrink: 0;
}
.cat-block h2 .count {
  font-size: 12px;
  color: var(--text-3);
  font-weight: 600;
  background: var(--bg-soft);
  border-radius: 99px;
  padding: 1px 9px;
  margin-left: 2px;
}

/* 分类配色 */
.cat-block[data-cat="json"]     { --accent: #6366f1; --accent-soft: rgba(99, 102, 241, 0.10); }
.cat-block[data-cat="encode"]   { --accent: #0ea5e9; --accent-soft: rgba(14, 165, 233, 0.10); }
.cat-block[data-cat="generate"] { --accent: #f59e0b; --accent-soft: rgba(245, 158, 11, 0.12); }
.cat-block[data-cat="convert"]  { --accent: #10b981; --accent-soft: rgba(16, 185, 129, 0.11); }
.cat-block[data-cat="text"]     { --accent: #8b5cf6; --accent-soft: rgba(139, 92, 246, 0.11); }
.cat-block[data-cat="image"]    { --accent: #ec4899; --accent-soft: rgba(236, 72, 153, 0.10); }
.cat-block[data-cat="media"]    { --accent: #f43f5e; --accent-soft: rgba(244, 63, 94, 0.10); }
html[data-theme="dark"] .cat-block[data-cat="json"]     { --accent: #818cf8; --accent-soft: rgba(129, 140, 248, 0.16); }
html[data-theme="dark"] .cat-block[data-cat="encode"]   { --accent: #38bdf8; --accent-soft: rgba(56, 189, 248, 0.15); }
html[data-theme="dark"] .cat-block[data-cat="generate"] { --accent: #fbbf24; --accent-soft: rgba(251, 191, 36, 0.15); }
html[data-theme="dark"] .cat-block[data-cat="convert"]  { --accent: #34d399; --accent-soft: rgba(52, 211, 153, 0.15); }
html[data-theme="dark"] .cat-block[data-cat="text"]     { --accent: #a78bfa; --accent-soft: rgba(167, 139, 250, 0.16); }
html[data-theme="dark"] .cat-block[data-cat="image"]    { --accent: #f472b6; --accent-soft: rgba(244, 114, 182, 0.16); }
html[data-theme="dark"] .cat-block[data-cat="media"]    { --accent: #fb7185; --accent-soft: rgba(251, 113, 133, 0.16); }

/* 分类导航色点 */
.cat-nav a[data-cat="json"]     { --accent: #6366f1; }
.cat-nav a[data-cat="encode"]   { --accent: #0ea5e9; }
.cat-nav a[data-cat="generate"] { --accent: #f59e0b; }
.cat-nav a[data-cat="convert"]  { --accent: #10b981; }
.cat-nav a[data-cat="text"]     { --accent: #8b5cf6; }
.cat-nav a[data-cat="image"]    { --accent: #ec4899; }
.cat-nav a[data-cat="media"]    { --accent: #f43f5e; }
.cat-nav a[data-cat="all"]      { --accent: var(--text-3); }
.cat-nav a.active               { --accent: #fff; }

/* ---------- 工具卡片 ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(252px, 1fr));
  gap: 16px;
}
.tool-card {
  --accent: var(--primary);
  --accent-soft: var(--primary-soft);
  position: relative;
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  box-shadow: var(--shadow-sm);
  transition: transform 0.22s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.22s, border-color 0.22s;
}
.tool-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(280px 130px at 100% 0%, var(--accent-soft), transparent 72%);
  opacity: 0;
  transition: opacity 0.22s;
  pointer-events: none;
}
.tool-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
  box-shadow: var(--shadow-hover);
}
.tool-card:hover::before { opacity: 1; }
.tool-card .icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  flex-shrink: 0;
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 18%, transparent);
  display: grid;
  place-items: center;
  font-size: 21px;
  font-weight: 700;
  color: var(--accent);
  transition: transform 0.22s cubic-bezier(0.22, 1, 0.36, 1);
}
.tool-card:hover .icon { transform: scale(1.06) rotate(-2deg); }
.tool-card h3 {
  font-size: 15px;
  font-weight: 650;
  letter-spacing: -0.1px;
  margin-top: 1px;
  position: relative;
}
.tool-card p {
  font-size: 12.8px;
  color: var(--text-2);
  margin-top: 5px;
  line-height: 1.55;
  position: relative;
}

.no-result {
  text-align: center;
  color: var(--text-2);
  padding: 56px 20px;
  display: none;
  background: var(--bg-card);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-lg);
}
.no-result p:first-child { font-size: 38px; margin-bottom: 6px; opacity: 0.8; }

/* ---------- 页脚 ---------- */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-card) 55%, transparent);
  padding: 40px 0 26px;
  font-size: 13px;
  color: var(--text-2);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 28px 48px;
}
.footer-brand { display: flex; gap: 12px; align-items: flex-start; max-width: 320px; }
.footer-brand b { display: block; font-size: 15px; color: var(--text); letter-spacing: -0.2px; }
.footer-brand p { margin-top: 4px; line-height: 1.6; color: var(--text-3); }
.footer-col { display: flex; flex-direction: column; gap: 8px; }
.footer-col h4 {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--text-3);
  margin-bottom: 2px;
}
.footer-col a { color: var(--text-2); transition: color 0.15s; }
.footer-col a:hover { color: var(--primary); }
.footer-bottom {
  max-width: 1200px;
  margin: 28px auto 0;
  padding: 18px 24px 0;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: var(--text-3);
}
.site-footer .links {
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.site-footer a:hover { color: var(--primary); }

/* ---------- 工具页通用 ---------- */
.page-head { padding: 38px 0 22px; }
.breadcrumb { font-size: 13px; color: var(--text-3); margin-bottom: 12px; }
.breadcrumb a { transition: color 0.15s; }
.breadcrumb a:hover { color: var(--primary); }
.page-head h1 {
  font-size: clamp(23px, 3vw, 29px);
  font-weight: 800;
  letter-spacing: -0.6px;
  display: flex;
  align-items: center;
  gap: 10px;
  line-height: 1.3;
}
.page-head .desc {
  color: var(--text-2);
  margin-top: 8px;
  font-size: 14.5px;
  line-height: 1.7;
  max-width: 780px;
}

.panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 18px;
}
.panel h3 {
  font-size: 14.5px;
  font-weight: 650;
  color: var(--text);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  letter-spacing: -0.1px;
}
.panel h3 > .btn:first-of-type { margin-left: auto; }
.row { display: flex; gap: 16px; flex-wrap: wrap; }
.row > * { flex: 1; min-width: 240px; }

label.field {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-2);
  margin-bottom: 7px;
  letter-spacing: 0.01em;
}
label.field b { color: var(--primary); font-weight: 700; }

textarea,
input[type="text"],
input[type="number"],
input[type="search"],
input[type="password"],
select {
  width: 100%;
  height: 42px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  padding: 9px 13px;
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.16s, box-shadow 0.16s, background-color 0.16s;
}
textarea {
  height: auto;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.7;
  resize: vertical;
  min-height: 140px;
  padding: 12px 14px;
}
select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2398a0b3' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 34px;
}
input[type="color"] { padding: 4px; cursor: pointer; }
input[type="range"] { accent-color: var(--primary); height: 24px; cursor: pointer; }
input[type="checkbox"] { accent-color: var(--primary); width: 15px; height: 15px; cursor: pointer; }

textarea:focus,
input:focus,
select:focus {
  border-color: var(--primary);
  background: var(--bg-card);
  box-shadow: 0 0 0 4px var(--ring);
}
textarea::placeholder, input::placeholder { color: var(--text-3); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 38px;
  padding: 0 16px;
  border: 1px solid var(--border-strong);
  background: var(--bg-card);
  color: var(--text);
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 550;
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
  transition: transform 0.16s, border-color 0.16s, color 0.16s, background 0.16s, box-shadow 0.16s;
}
.btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-soft);
  transform: translateY(-1px);
}
.btn:active { transform: translateY(0); }
.btn.primary {
  background: var(--gradient);
  border-color: transparent;
  color: #fff;
  font-weight: 650;
  box-shadow: 0 8px 18px -10px rgba(79, 70, 229, 0.85);
}
.btn.primary:hover {
  color: #fff;
  filter: brightness(1.06);
  box-shadow: 0 10px 22px -10px rgba(79, 70, 229, 0.95);
}
html[data-theme="dark"] .btn.primary {
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  box-shadow: 0 8px 18px -10px rgba(0, 0, 0, 0.8);
}
.btn:disabled, .btn[disabled] { opacity: 0.55; cursor: not-allowed; transform: none; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 14px; align-items: center; }
.btn.sm { height: 28px; padding: 0 10px; font-size: 12px; border-radius: 8px; box-shadow: none; }
.panel h3 .btn.sm { vertical-align: middle; }

.output {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font-family: var(--mono);
  font-size: 13px;
  white-space: pre-wrap;
  word-break: break-all;
  min-height: 60px;
  max-height: 480px;
  overflow: auto;
  line-height: 1.7;
}
.output:empty::before { content: "结果将显示在这里…"; color: var(--text-3); }

.msg {
  font-size: 13px;
  padding: 9px 13px;
  border-radius: var(--radius-sm);
  margin-top: 12px;
  display: none;
  border: 1px solid transparent;
  line-height: 1.5;
}
.msg.ok { display: block; background: rgba(34, 197, 94, 0.10); color: #15803d; border-color: rgba(34, 197, 94, 0.22); }
.msg.err { display: block; background: rgba(239, 68, 68, 0.09); color: #dc2626; border-color: rgba(239, 68, 68, 0.2); }
html[data-theme="dark"] .msg.ok { color: #4ade80; background: rgba(74, 222, 128, 0.10); border-color: rgba(74, 222, 128, 0.22); }
html[data-theme="dark"] .msg.err { color: #f87171; background: rgba(248, 113, 113, 0.10); border-color: rgba(248, 113, 113, 0.22); }

.kv { display: grid; grid-template-columns: 140px 1fr; gap: 10px 16px; font-size: 14px; }
.kv dt { color: var(--text-2); font-size: 13.5px; }
.kv dd { font-family: var(--mono); font-size: 13px; word-break: break-all; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  font-family: var(--mono);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.table th, .table td {
  border-bottom: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}
.table th {
  background: var(--bg-soft);
  color: var(--text-2);
  font-weight: 600;
  font-family: var(--sans);
  font-size: 12.5px;
  white-space: nowrap;
}
.table tbody tr { transition: background 0.14s; }
.table tbody tr:hover { background: color-mix(in srgb, var(--bg-soft) 70%, transparent); }
.table tbody tr:last-child td { border-bottom: none; }

.diff-add { background: rgba(34, 197, 94, 0.15); }
.diff-del { background: rgba(239, 68, 68, 0.15); }
.diff-chg { background: rgba(234, 179, 8, 0.18); }
mark {
  background: rgba(250, 204, 21, 0.4);
  border-radius: 3px;
  padding: 0 2px;
  color: inherit;
  outline: 1px solid rgba(234, 179, 8, 0.35);
}
html[data-theme="dark"] mark {
  background: rgba(250, 204, 21, 0.2);
  color: #fde68a;
  outline-color: rgba(250, 204, 21, 0.45);
}

.swatch {
  width: 100%;
  height: 96px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06), var(--shadow-sm);
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  border-radius: 99px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  font-size: 12.5px;
  color: var(--text-2);
  margin: 2px 6px 2px 0;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background 0.15s, transform 0.15s;
}
.chip:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-soft);
  transform: translateY(-1px);
}

.drop-zone {
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius);
  padding: 44px 20px;
  text-align: center;
  color: var(--text-2);
  background: color-mix(in srgb, var(--bg-soft) 45%, transparent);
  transition: border-color 0.2s, background 0.2s, color 0.2s;
  cursor: pointer;
  font-size: 14px;
}
.drop-zone:hover, .drop-zone.drag {
  border-color: var(--primary);
  background: var(--primary-soft);
  color: var(--primary);
}
img.preview {
  max-width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  display: block;
}
canvas.preview {
  max-width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
  display: block;
}
canvas { max-width: 100%; }

/* 密码列表 */
.pw {
  font-family: var(--mono);
  font-size: 13px;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.14s, border-color 0.14s, color 0.14s;
}
.pw:hover { background: var(--primary-soft); border-color: var(--primary-soft); color: var(--primary); }

/* 音视频进度 */
.prog-wrap { margin-top: 14px; }
.prog-bar { box-shadow: 0 0 12px -2px var(--primary); }
.prog-text { font-variant-numeric: tabular-nums; }

/* Toast */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(16px);
  background: var(--text);
  color: var(--bg-card);
  padding: 10px 20px;
  border-radius: 99px;
  font-size: 13.5px;
  font-weight: 500;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.24s, transform 0.24s;
  box-shadow: var(--shadow-lg);
  z-index: 999;
  max-width: calc(100vw - 40px);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- 动画 ---------- */
@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pop {
  from { opacity: 0; transform: translateY(-4px) scale(0.99); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.18); }
  50% { box-shadow: 0 0 0 6px rgba(34, 197, 94, 0.06); }
}
.cat-block { animation: rise 0.42s cubic-bezier(0.22, 1, 0.36, 1) both; }
.tool-card { animation: rise 0.42s cubic-bezier(0.22, 1, 0.36, 1) both; animation-delay: calc(var(--i, 0) * 18ms); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .header-nav { display: none; }
  .header-search { max-width: none; }
  .logo-text { font-size: 15px; }
}
@media (max-width: 860px) {
  .layout { flex-direction: column; gap: 22px; padding: 24px 0 48px; }
  .cat-nav {
    position: static;
    width: 100%;
    flex-direction: row;
    overflow-x: auto;
    padding: 8px;
    gap: 4px;
    border-radius: var(--radius);
  }
  .cat-nav::before { display: none; }
  .cat-nav a { white-space: nowrap; padding: 8px 12px; }
  .cat-nav a .dot { display: none; }
  .hero { padding: 48px 20px 34px; }
  .hero .stats span { padding: 0 12px; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(215px, 1fr)); }
  .footer-inner { flex-direction: column; }
  .panel { padding: 18px; }
}
@media (max-width: 560px) {
  body { font-size: 14.5px; }
  .container { padding: 0 16px; }
  .header-inner { padding: 0 14px; gap: 10px; }
  .logo-mark { width: 32px; height: 32px; }
  .logo-sub { display: none; }
  .header-search input { height: 38px; font-size: 13.5px; padding-left: 34px; background-position: 11px center; background-size: 15px; }
  .theme-toggle { width: 38px; height: 38px; }
  .hero h1 { letter-spacing: -1px; }
  .hero .stats { border-radius: var(--radius); padding: 10px 4px; }
  .hero .stats span { border-right: none; padding: 2px 10px; }
  .grid { grid-template-columns: 1fr; }
  .row > * { min-width: 100%; }
  .cat-block { margin-bottom: 32px; }
  .kv { grid-template-columns: 106px 1fr; gap: 8px 12px; }
  .panel { padding: 16px; border-radius: var(--radius); }
  .page-head { padding: 26px 0 16px; }
  .page-head .desc { font-size: 14px; }
  .table th, .table td { padding: 9px 10px; }
  .footer-bottom { flex-direction: column; gap: 6px; }
  .search-suggest {
    position: fixed;
    top: calc(var(--header-h) + 6px);
    left: 12px;
    right: 12px;
    max-height: 62vh;
  }
}
@media (max-width: 400px) {
  .logo-text { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}