/* ============================================================
   ImageDesk · 亚马逊卖家一站式工具平台
   高端平台视觉：藏蓝 × 橙金，浅色 / 深色双主题
   ============================================================ */

:root {
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  /* ---- 浅色主题（默认） ---- */
  --navy-deep: #081a38;
  --navy-1: #0b2447;
  --navy-2: #16386b;

  --bg: #eef1f6;
  --surface: #ffffff;
  --surface-2: #f5f7fb;
  --border: #e2e7f0;
  --border-strong: #cdd6e4;

  --text: #14213c;
  --text-soft: #45526e;
  --muted: #7d88a1;

  --primary: #ec6d0e;
  --primary-strong: #d95f06;
  --primary-soft: rgba(236, 109, 14, 0.09);
  --primary-border: rgba(236, 109, 14, 0.32);
  --grad-cta: linear-gradient(135deg, #ff9226 0%, #f2610c 100%);

  --teal: #0e8f80;
  --teal-dim: #ddf5f0;
  --teal-border: rgba(14, 143, 128, 0.30);
  --danger: #cf3038;
  --danger-dim: rgba(207, 48, 56, 0.08);
  --danger-border: rgba(207, 48, 56, 0.28);

  --card-shadow: 0 10px 34px rgba(11, 36, 71, 0.08), 0 2px 8px rgba(11, 36, 71, 0.04);
  --card-shadow-hover: 0 16px 44px rgba(11, 36, 71, 0.13), 0 3px 10px rgba(11, 36, 71, 0.05);

  --hero-overlay-a: rgba(37, 99, 235, 0.28);
  --hero-overlay-b: rgba(242, 97, 12, 0.20);

  --particle-dot: rgba(23, 42, 79, 0.30);
  --particle-line: rgba(23, 42, 79, 0.10);
  --particle-glow-a: rgba(236, 109, 14, 0.07);
  --particle-glow-b: rgba(37, 99, 235, 0.08);

  --row-hover: rgba(20, 33, 60, 0.03);
  --dropzone-bg: rgba(11, 36, 71, 0.035);
  --dropzone-border: rgba(11, 36, 71, 0.30);
}

html[data-theme="dark"] {
  --navy-deep: #050d1d;
  --navy-1: #0a1830;
  --navy-2: #12264a;

  --bg: #0b1120;
  --surface: #111a2e;
  --surface-2: #16223b;
  --border: #24314f;
  --border-strong: #33436a;

  --text: #e9edf7;
  --text-soft: #c2cbdf;
  --muted: #8590ab;

  --primary: #ff9034;
  --primary-strong: #ff7d15;
  --primary-soft: rgba(255, 144, 52, 0.10);
  --primary-border: rgba(255, 144, 52, 0.38);
  --grad-cta: linear-gradient(135deg, #ff9d3f 0%, #ee620c 100%);

  --teal: #2dd4bf;
  --teal-dim: rgba(45, 212, 191, 0.12);
  --teal-border: rgba(45, 212, 191, 0.35);
  --danger: #f2555c;
  --danger-dim: rgba(242, 85, 92, 0.10);
  --danger-border: rgba(242, 85, 92, 0.35);

  --card-shadow: 0 10px 34px rgba(0, 0, 0, 0.35), 0 2px 8px rgba(0, 0, 0, 0.25);
  --card-shadow-hover: 0 16px 46px rgba(0, 0, 0, 0.45), 0 3px 10px rgba(0, 0, 0, 0.3);

  --hero-overlay-a: rgba(37, 99, 235, 0.18);
  --hero-overlay-b: rgba(242, 97, 12, 0.14);

  --particle-dot: rgba(190, 210, 245, 0.34);
  --particle-line: rgba(150, 180, 230, 0.10);
  --particle-glow-a: rgba(255, 144, 52, 0.08);
  --particle-glow-b: rgba(64, 140, 255, 0.10);

  --row-hover: rgba(255, 255, 255, 0.03);
  --dropzone-bg: rgba(255, 255, 255, 0.03);
  --dropzone-border: rgba(255, 255, 255, 0.22);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: transparent;
  color: var(--text);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

#bg-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  display: block;
  background: var(--bg);
  transition: background 0.25s ease;
  pointer-events: none;   /* 装饰背景不拦截鼠标：右键可正常弹出「重新加载」 */
}

#app {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

::selection { background: var(--primary); color: #fff; }

code {
  font-family: var(--font-mono);
  background: var(--primary-soft);
  color: var(--primary);
  padding: 0.08em 0.42em;
  border-radius: 5px;
  font-size: 0.9em;
}

button { font-family: inherit; }

/* ============================================================
   顶部导航 + 下拉菜单
   ============================================================ */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid var(--border);
}
html[data-theme="dark"] .site-nav { background: rgba(17, 26, 46, 0.82); }

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  min-height: 62px;
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text);
  flex-shrink: 0;
}
.brand-mark { display: block; }
.brand-divider { width: 1px; height: 22px; background: var(--border-strong); }
.brand-slogan { font-size: 12.5px; letter-spacing: 0.14em; color: var(--muted); white-space: nowrap; }

.nav-links {
  display: flex;
  align-items: stretch;
  gap: 2px;
  margin-left: auto;
}

.nav-link {
  appearance: none;
  border: none;
  background: none;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-soft);
  padding: 20px 11px 17px;
  cursor: pointer;
  white-space: nowrap;
  position: relative;
  text-decoration: none;
  transition: color 0.16s ease;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 11px;
  right: 11px;
  bottom: 0;
  height: 3px;
  border-radius: 3px 3px 0 0;
  background: var(--grad-cta);
  transform: scaleX(0);
  transition: transform 0.18s ease;
}
.nav-link:hover { color: var(--text); }
.nav-link.active { color: var(--primary); }
.nav-link.active::after { transform: scaleX(1); }

/* 下拉（点击开合，由 app.js 控制 .open 类） */
.nav-drop { position: relative; display: flex; }
.drop-menu {
  position: absolute;
  top: calc(100% - 4px);
  left: 0;
  transform: translateY(6px);
  min-width: 230px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 13px;
  box-shadow: var(--card-shadow-hover);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.16s ease, transform 0.16s ease, visibility 0.16s;
  z-index: 60;
}
.nav-drop.open .drop-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.drop-head {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 7px 12px 5px;
}
.drop-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  border-radius: 9px;
  padding: 9px 12px;
  cursor: pointer;
  color: var(--text);
  text-decoration: none;
  transition: background 0.13s ease, color 0.13s ease;
}
.drop-item:hover { background: var(--primary-soft); color: var(--primary); }
.drop-item.active { background: var(--primary-soft); color: var(--primary); }
.drop-item .di { font-size: 16px; width: 22px; text-align: center; flex-shrink: 0; }
.drop-item b { font-size: 13px; font-weight: 650; display: block; }
.drop-item small { display: block; font-size: 10.5px; color: var(--muted); margin-top: 1px; }

.caret { font-size: 9px; opacity: 0.6; margin-left: 3px; display: inline-block; transition: transform 0.18s ease; }
.nav-drop.open .caret { transform: rotate(180deg); opacity: 1; }

.nav-right { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }

.safe-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--teal);
  background: var(--teal-dim);
  border: 1px solid var(--teal-border);
  border-radius: 999px;
  padding: 6px 12px;
  white-space: nowrap;
}

.theme-toggle {
  position: relative;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.theme-toggle:hover { border-color: var(--primary-border); transform: translateY(-1px); }
.theme-toggle .icon-sun,
.theme-toggle .icon-moon { position: absolute; transition: opacity 0.15s ease, transform 0.25s ease; }
.theme-toggle .icon-moon { opacity: 0; transform: rotate(-40deg) scale(0.6); }
html[data-theme="dark"] .theme-toggle { color: var(--teal); }
html[data-theme="dark"] .theme-toggle .icon-sun { opacity: 0; transform: rotate(40deg) scale(0.6); }
html[data-theme="dark"] .theme-toggle .icon-moon { opacity: 1; transform: rotate(0) scale(1); }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  background:
    radial-gradient(900px 340px at 12% -10%, var(--hero-overlay-a), transparent 62%),
    radial-gradient(800px 320px at 88% 0%, var(--hero-overlay-b), transparent 58%),
    linear-gradient(132deg, var(--navy-deep) 0%, var(--navy-1) 46%, var(--navy-2) 100%);
  color: #f4f7ff;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.045) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent 78%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent 78%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 1280px;
  margin: 0 auto;
  padding: 38px 24px 40px;
}
.hero-crumb {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: 12.5px;
  color: rgba(226, 234, 250, 0.72);
  margin-bottom: 16px;
}
.newtab-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11.5px;
  font-weight: 600;
  color: #ffd9ae;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.20);
  border-radius: 999px;
  padding: 4px 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: all 0.15s ease;
}
.newtab-link:hover { background: rgba(255, 255, 255, 0.16); transform: translateY(-1px); }

/* ---------- 首页 Hero 居中版式（工具页仍为左对齐） ---------- */
body.view-home .hero-inner { text-align: center; }
body.view-home .hero-crumb { justify-content: center; }
body.view-home .hero-sub {
  max-width: 840px;
  margin-left: auto;
  margin-right: auto;
}
body.view-home .hero-stats {
  justify-content: center;
  margin-left: auto;    /* hero-stats 为 grid(1fr 撑满)，需整体居中容器 */
  margin-right: auto;
}
.hero-crumb i { font-style: normal; margin: 0 7px; opacity: 0.55; }
.hero-crumb b { color: #ffd9ae; font-weight: 600; }
.hero h1 {
  margin: 0 0 14px;
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: 0.01em;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.25);
}
.grad-text {
  background: linear-gradient(100deg, #ffc46b 0%, #ff9226 45%, #ff7a3d 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.hero-sub {
  margin: 0 0 26px;
  max-width: 800px;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(222, 232, 248, 0.82);
}
.hero-sub strong { color: #ffd9ae; }
.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 14px;
  max-width: 900px;
}
.stat {
  display: flex;
  align-items: center;
  gap: 13px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 14px;
  padding: 13px 17px;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: transform 0.18s ease, background 0.18s ease;
}
.stat:hover { transform: translateY(-2px); background: rgba(255, 255, 255, 0.10); }
.stat b { font-family: var(--font-mono); font-size: 19px; font-weight: 700; color: #ffc46b; white-space: nowrap; }
.stat span { font-size: 11.5px; line-height: 1.55; color: rgba(222, 232, 248, 0.78); }

/* ============================================================
   双栏布局
   ============================================================ */
.layout {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 30px clamp(20px, 4.5vw, 60px) 10px;
  flex: 1;
}
.main-col { min-width: 0; max-width: 1180px; margin: 0 auto; }

/* ============================================================
   工具卡片（工具页容器）
   ============================================================ */
.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--card-shadow);
  padding: 26px 26px 24px;
  margin-bottom: 26px;
}
.tool-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.tool-title { display: flex; gap: 14px; align-items: flex-start; min-width: 0; }
.tool-ico {
  width: 46px; height: 46px; flex-shrink: 0;
  border-radius: 13px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  color: #fff;
  background: var(--grad-cta);
  box-shadow: 0 6px 16px rgba(242, 97, 12, 0.32);
}
.tool-title h2 { margin: 1px 0 5px; font-size: 19px; font-weight: 750; }
.tool-title p { margin: 0; font-size: 13px; line-height: 1.75; color: var(--muted); }
.tool-flag {
  flex-shrink: 0; font-size: 11.5px; font-weight: 700; letter-spacing: 0.06em;
  color: var(--primary); background: var(--primary-soft);
  border: 1px solid var(--primary-border);
  border-radius: 999px; padding: 5px 12px; margin-top: 3px;
}
.tool-flag.alt { color: var(--teal); background: var(--teal-dim); border-color: var(--teal-border); }

.policy-banner {
  font-size: 13px; line-height: 1.85; color: var(--text-soft);
  background: var(--primary-soft);
  border: 1px solid var(--primary-border);
  border-radius: 12px;
  padding: 13px 16px;
  margin-bottom: 18px;
}
.policy-banner b { color: var(--primary); }
.policy-banner u { text-decoration-color: var(--primary); text-underline-offset: 3px; }
.policy-banner.neutral { background: var(--surface-2); border-color: var(--border); }
.policy-banner.warn { background: var(--danger-dim); border-color: var(--danger-border); color: var(--danger); }
.policy-banner.warn strong { color: var(--danger); }

/* ---------- 表单 ---------- */
.toolbar { display: flex; gap: 18px 26px; flex-wrap: wrap; align-items: flex-end; margin-bottom: 8px; }
.field {
  display: flex; flex-direction: column; gap: 7px;
  font-size: 12.5px; font-weight: 550; color: var(--muted);
  min-width: 210px;
}
.field-sm { min-width: 150px; flex: 0 1 auto; }
.field b { color: var(--primary); font-family: var(--font-mono); }
.field input[type="text"],
.field input[type="number"],
.field select {
  font-family: var(--font-body);
  font-size: 13px; color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 9px;
  padding: 9px 11px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.field input[type="text"]:focus,
.field input[type="number"]:focus,
.field select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.field input[type="range"] { accent-color: var(--primary); cursor: pointer; }

.field-check { display: flex; align-items: center; gap: 9px; cursor: pointer; padding-bottom: 9px; }
.field-check input[type="checkbox"], .field-check input[type="radio"] {
  width: 17px; height: 17px; accent-color: var(--primary); cursor: pointer; flex-shrink: 0;
}
.field-check span { font-size: 13px; font-weight: 600; color: var(--text); }

.field-note-line { font-size: 12px; color: var(--muted); line-height: 1.7; margin: 2px 0 16px; }

/* 大文本框 */
.tt {
  width: 100%;
  min-height: 170px;
  resize: vertical;
  font-family: var(--font-body);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  padding: 13px 15px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.tt:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); background: var(--surface); }
.tt.mono { font-family: var(--font-mono); font-size: 12.5px; }

.opt-row { display: flex; gap: 12px 22px; flex-wrap: wrap; align-items: center; margin: 12px 0 16px; }
.opt-row .sep { width: 1px; align-self: stretch; background: var(--border); }

.btn-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-top: 14px; }

/* ---------- 按钮 ---------- */
.action-bar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.btn {
  font-weight: 700; font-size: 13.5px;
  border-radius: 11px; padding: 11px 22px;
  cursor: pointer; border: 1px solid transparent;
  transition: transform 0.1s ease, box-shadow 0.15s ease, opacity 0.15s ease, background 0.15s ease;
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.45; cursor: default; }
.btn-primary { background: var(--grad-cta); color: #fff; box-shadow: 0 8px 20px rgba(242, 97, 12, 0.30); }
.btn-primary:hover:not(:disabled) { box-shadow: 0 10px 26px rgba(242, 97, 12, 0.42); transform: translateY(-1px); }
.btn-ghost { background: transparent; border-color: var(--teal-border); color: var(--teal); }
.btn-ghost:hover:not(:disabled) { background: var(--teal-dim); }
.btn-text { background: none; color: var(--muted); }
.btn-text:hover:not(:disabled) { color: var(--danger); }
.btn.sm { padding: 8px 15px; font-size: 12.5px; border-radius: 9px; }

.progress-wrap { display: flex; align-items: center; gap: 12px; flex: 1; min-width: 180px; }
.progress-track {
  flex: 1; height: 7px; min-width: 90px;
  border-radius: 99px; background: var(--surface-2);
  border: 1px solid var(--border); overflow: hidden;
}
.progress-track i {
  display: block; height: 100%; width: 0%;
  border-radius: 99px; background: var(--grad-cta);
  transition: width 0.25s ease;
}
.progress-text { font-family: var(--font-mono); font-size: 11.5px; color: var(--muted); white-space: nowrap; }

/* ---------- Dropzone / 文件表（图片工具） ---------- */
.dropzone {
  border: 2px dashed var(--dropzone-border);
  border-radius: 16px;
  background: var(--dropzone-bg);
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.16s ease, background 0.16s ease, transform 0.16s ease, box-shadow 0.16s ease;
  margin-bottom: 12px;
}
.dropzone:hover, .dropzone.drag-over {
  border-color: var(--primary);
  background: var(--primary-soft);
  box-shadow: 0 0 0 5px var(--primary-soft);
}
.dropzone.drag-over { transform: scale(1.006); }
.dropzone-icon {
  width: 52px; height: 52px; margin: 0 auto 12px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--primary);
  border: 1.5px solid var(--primary-border);
  background: var(--surface);
  box-shadow: 0 4px 14px rgba(11, 36, 71, 0.06);
}
.dz-main { margin: 2px 0 6px; font-size: 15px; font-weight: 650; color: var(--text); }
.dz-sub { margin: 0; font-size: 12.5px; color: var(--muted); }

.format-warning {
  font-size: 12.5px; line-height: 1.7; color: var(--danger);
  background: var(--danger-dim);
  border: 1px solid var(--danger-border);
  border-radius: 10px;
  padding: 10px 14px;
  margin-bottom: 16px;
  word-break: break-all;
}
.format-warning .fname { font-family: var(--font-mono); font-size: 11.5px; }

.list-wrap { border: 1px solid var(--border); border-radius: 13px; overflow: auto; margin-bottom: 16px; background: var(--surface); }
.file-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.file-table th {
  text-align: left; font-size: 11px; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted); background: var(--surface-2);
  padding: 11px 14px; border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.file-table td { padding: 10px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; color: var(--text-soft); }
.file-table tr:last-child td { border-bottom: none; }
.file-table tbody tr { transition: background 0.12s ease; }
.file-table tbody tr:hover { background: var(--row-hover); }
.fname { font-family: var(--font-mono); font-size: 12.5px; color: var(--text); word-break: break-all; }

.chip {
  display: inline-flex; align-items: center; gap: 5px;
  font-family: var(--font-mono); font-size: 11px;
  padding: 3px 10px; border-radius: 999px;
  border: 1px solid var(--border-strong);
  color: var(--muted); white-space: nowrap; margin: 2px 3px 2px 0;
}
.chip.pending { color: var(--muted); }
.chip.done { color: var(--teal); border-color: var(--teal-border); background: var(--teal-dim); }
.chip.error { color: var(--danger); border-color: var(--danger-border); background: var(--danger-dim); }
.chip.processing { color: var(--primary); border-color: var(--primary-border); background: var(--primary-soft); }
.chip.hot { color: var(--danger); border-color: var(--danger-border); background: var(--danger-dim); font-weight: 700; }
.chip.mid { color: var(--primary); border-color: var(--primary-border); background: var(--primary-soft); font-weight: 700; }

.row-btn {
  font-size: 12.5px; font-weight: 650; color: var(--teal);
  background: none; border: none; cursor: pointer;
  padding: 2px 4px; border-radius: 6px;
  transition: background 0.12s ease;
}
.row-btn:hover:not(:disabled) { background: var(--teal-dim); }
.row-btn:disabled { color: var(--muted); opacity: 0.55; cursor: default; }
.row-remove { color: var(--danger); margin-left: 8px; }
.row-remove:hover:not(:disabled) { background: var(--danger-dim); }

/* ============================================================
   首页：分类目录 & 工具卡片网格
   ============================================================ */
.cat-block { margin-bottom: 22px; }
.cat-head {
  display: flex; align-items: baseline; gap: 10px;
  margin: 0 0 12px; padding-bottom: 8px;
  border-bottom: 1px dashed var(--border);
}
.cat-head .ci { font-size: 17px; }
.cat-head h4 { margin: 0; font-size: 15px; font-weight: 750; }
.cat-head small { font-size: 11.5px; color: var(--muted); }

.tile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(215px, 1fr));
  gap: 13px;
}
.tool-tile {
  display: flex; gap: 12px; align-items: flex-start;
  text-align: left;
  text-decoration: none;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 15px 15px 13px;
  cursor: pointer;
  box-shadow: var(--card-shadow);
  transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
}
.tool-tile:hover {
  transform: translateY(-3px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--primary-border);
}
.tile-ico {
  width: 42px; height: 42px; flex-shrink: 0;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 21px;
  background: var(--surface-2);
  border: 1px solid var(--border);
}
.tool-tile:hover .tile-ico { background: var(--primary-soft); border-color: var(--primary-border); }
.tile-txt { min-width: 0; }
.tile-txt b { display: block; font-size: 14px; font-weight: 700; margin-bottom: 4px; color: var(--text); }
.tile-txt small {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-size: 11.5px; line-height: 1.6; color: var(--muted);
}
.tile-hot {
  float: right;
  font-size: 10px; font-weight: 800; color: var(--danger);
  background: var(--danger-dim); border: 1px solid var(--danger-border);
  padding: 1px 7px; border-radius: 99px; margin-left: 6px;
}

/* ============================================================
   内容区（亮点 / 步骤 / FAQ）
   ============================================================ */
.content-block { margin: 6px 0 30px; }
.block-title {
  font-size: 18px; font-weight: 750;
  margin: 0 0 16px; padding-left: 12px; position: relative;
}
.block-title::before {
  content: ""; position: absolute; left: 0; top: 3px; bottom: 3px;
  width: 4px; border-radius: 4px; background: var(--grad-cta);
}
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }
.feature-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 15px; padding: 20px;
  box-shadow: var(--card-shadow);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.feature-card:hover { transform: translateY(-3px); box-shadow: var(--card-shadow-hover); }
.feature-card .f-ico { font-size: 24px; display: block; margin-bottom: 10px; }
.feature-card h4 { margin: 0 0 7px; font-size: 14.5px; font-weight: 700; }
.feature-card p { margin: 0; font-size: 12.5px; line-height: 1.8; color: var(--muted); }

.steps-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; }
.step-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 15px; padding: 18px 18px 16px;
  box-shadow: var(--card-shadow);
}
.step-card i {
  font-style: normal; font-family: var(--font-mono);
  font-size: 24px; font-weight: 700;
  background: linear-gradient(135deg, #ffb35c, #f2610c);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.step-card h4 { margin: 6px 0; font-size: 14.5px; font-weight: 700; }
.step-card p { margin: 0; font-size: 12.5px; line-height: 1.75; color: var(--muted); }

.faq-list { display: grid; gap: 10px; }
.faq-item {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 13px; padding: 0 18px;
  box-shadow: var(--card-shadow); overflow: hidden;
}
.faq-item summary {
  cursor: pointer; font-size: 14px; font-weight: 650; color: var(--text);
  list-style: none; padding: 15px 30px 15px 0; position: relative;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; position: absolute; right: 2px; top: 50%;
  transform: translateY(-50%);
  font-size: 18px; font-weight: 500; color: var(--primary);
  transition: transform 0.18s ease;
}
.faq-item[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq-item p { margin: 0 0 15px; font-size: 13px; line-height: 1.9; color: var(--text-soft); }

/* ============================================================
   工具通用结果组件
   ============================================================ */
.result-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 13px;
  padding: 16px 18px;
  margin-top: 16px;
}
.result-main {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 700;
  color: var(--primary);
  word-break: break-all;
  line-height: 1.35;
}
.result-sub { font-size: 12.5px; color: var(--muted); margin-top: 6px; line-height: 1.7; }

.stat-boxes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 11px;
  margin: 14px 0;
}
.stat-box {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
}
.stat-box b { display: block; font-family: var(--font-mono); font-size: 19px; font-weight: 750; color: var(--primary); }
.stat-box span { font-size: 11.5px; color: var(--muted); }
.stat-box.good b { color: var(--teal); }
.stat-box.bad b { color: var(--danger); }

.kv-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.kv-table td { padding: 8px 10px; border-bottom: 1px dashed var(--border); color: var(--text-soft); }
.kv-table td:last-child { text-align: right; font-family: var(--font-mono); color: var(--text); font-weight: 600; }
.kv-table tr:last-child td { border-bottom: none; }

.bar-row { display: flex; align-items: center; gap: 10px; padding: 5px 0; font-size: 12.5px; }
.bar-row .bw {
  flex: 1; height: 14px;
  background: var(--surface-2);
  border-radius: 99px; overflow: hidden;
  border: 1px solid var(--border);
}
.bar-row .bw i { display: block; height: 100%; background: var(--grad-cta); border-radius: 99px; min-width: 2px; }
.bar-row .bn { width: 34%; text-align: right; font-family: var(--font-mono); color: var(--muted); font-size: 11.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bar-row .bl { width: 30%; font-weight: 600; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.mini-note { font-size: 11.5px; color: var(--muted); line-height: 1.7; margin-top: 10px; }

/* Emoji 网格 */
.emoji-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(46px, 1fr));
  gap: 6px;
  max-height: 430px;
  overflow-y: auto;
  padding: 4px;
}
.emoji-cell {
  aspect-ratio: 1;
  display: flex; align-items: center; justify-content: center;
  font-size: 23px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.12s ease, border-color 0.12s ease, background 0.12s ease;
}
.emoji-cell:hover { transform: scale(1.16); border-color: var(--primary); background: var(--primary-soft); z-index: 2; }

.emoji-cats { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.emoji-cat-btn {
  border: 1px solid var(--border-strong);
  background: var(--surface-2);
  color: var(--text-soft);
  border-radius: 999px;
  padding: 7px 14px;
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.14s ease;
}
.emoji-cat-btn.active { background: var(--grad-cta); color: #fff; border-color: transparent; }

/* ChatGPT 提示词卡片 */
.prompt-list { display: grid; gap: 11px; }
.prompt-card {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 13px;
  padding: 14px 16px;
  transition: border-color 0.15s ease;
}
.prompt-card:hover { border-color: var(--primary-border); }
.prompt-card h4 { margin: 0 0 8px; font-size: 13.5px; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.prompt-card pre {
  margin: 0 0 10px;
  font-family: var(--font-body);
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--text-soft);
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 120px;
  overflow: hidden;
  position: relative;
}

/* 可视化编辑器 */
.editor-toolbar {
  display: flex; flex-wrap: wrap; gap: 5px;
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  border-bottom: none;
  border-radius: 12px 12px 0 0;
  padding: 8px 10px;
}
.ed-btn {
  min-width: 30px; height: 30px;
  border: 1px solid transparent;
  background: none;
  border-radius: 7px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-soft);
  padding: 0 8px;
  transition: all 0.12s ease;
}
.ed-btn:hover { background: var(--primary-soft); color: var(--primary); border-color: var(--primary-border); }
.ed-sep { width: 1px; background: var(--border-strong); margin: 3px 4px; }

.ed-content {
  min-height: 320px;
  max-height: 620px;
  overflow-y: auto;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 0 0 12px 12px;
  padding: 22px 26px;
  font-size: 14.5px;
  line-height: 1.9;
  outline: none;
  word-break: break-word;
}
.ed-content:empty::before { content: attr(data-placeholder); color: var(--muted); }
.ed-content p { margin: 0 0 0.6em; }
.ed-content ul, .ed-content ol { margin: 0 0 0.6em; padding-left: 24px; }
.ed-source {
  display: none;
  width: 100%;
  min-height: 340px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 0 0 12px 12px;
  padding: 16px;
  outline: none;
  resize: vertical;
  color: var(--text);
}
.editor-wrap.source-mode .ed-content { display: none; }
.editor-wrap.source-mode .ed-source { display: block; }
.editor-wrap.source-mode .editor-toolbar { display: none; }

/* 编辑器选项卡（可视化 / 源码） */
.ed-tabs {
  display: flex; align-items: center; gap: 6px;
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  border-bottom: none;
  border-radius: 12px 12px 0 0;
  padding: 6px 8px 0;
}
.ed-tab {
  padding: 7px 16px;
  border: 1px solid transparent;
  border-bottom: none;
  border-radius: 9px 9px 0 0;
  background: none;
  cursor: pointer;
  font-size: 13px; font-weight: 600;
  color: var(--muted);
  transition: all 0.12s ease;
}
.ed-tab:hover { color: var(--primary); }
.ed-tab.active {
  background: var(--surface);
  border-color: var(--border-strong);
  color: var(--primary);
  margin-bottom: -1px;
}
.ed-tab-tip {
  margin-left: auto;
  font-size: 11px; color: var(--muted);
  padding: 0 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
/* 选项卡与工具栏/内容区衔接：源码模式下直接接内容区 */
.editor-wrap .editor-toolbar { border-radius: 0; }
.editor-wrap.source-mode .ed-source { border-radius: 0 0 12px 12px; }

/* 编辑器自定义右键菜单 */
.ed-ctx {
  position: fixed;
  z-index: 999;
  min-width: 150px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 14px 40px rgba(8, 26, 56, 0.25);
  padding: 5px;
  display: none;
}
.ed-ctx.show { display: block; }
.ed-ctx button {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 12px;
  border: none;
  background: none;
  border-radius: 7px;
  cursor: pointer;
  font-size: 12.5px;
  color: var(--text);
  text-align: left;
  transition: background 0.1s ease;
}
.ed-ctx button:hover { background: var(--primary-soft); color: var(--primary); }
.ed-ctx .ed-ctx-sep { height: 1px; background: var(--border); margin: 4px 8px; }

/* 常用符号条：固定在编辑器下方，常显 */
.ed-symbols-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 10px;
}
.ed-symbols-label {
  flex-shrink: 0;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-soft);
  padding-top: 7px;
  white-space: nowrap;
}
.ed-symbols {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  flex: 1;
  min-width: 0;
}
.ed-sym {
  min-width: 28px; height: 28px;
  padding: 0 5px;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text);
  line-height: 1;
  transition: all 0.12s ease;
}
.ed-sym:hover { background: var(--primary-soft); color: var(--primary); border-color: var(--primary-border); }

/* 可视化编辑器：示例文字态（点击/粘贴后自动清空） */
.ed-content.ed-demo, .ed-content.ed-demo * { color: var(--muted); }
.ed-content.ed-demo .ed-demo-tip {
  font-size: 12px;
  letter-spacing: 0.03em;
  border-bottom: 1px dashed var(--border-strong);
  padding-bottom: 6px;
  margin-bottom: 10px;
}

/* UPC 条码画布 */
.upc-canvas-wrap {
  display: flex; flex-wrap: wrap; gap: 14px;
  margin-top: 14px;
}
.upc-item { text-align: center; }
.upc-item canvas {
  background: #fff;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
}
.upc-item p { margin: 5px 0 0; font-family: var(--font-mono); font-size: 12px; color: var(--text-soft); }

/* 侵权高亮 */
.ipr-highlight {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  font-size: 13.5px;
  line-height: 2;
  word-break: break-word;
}
.ipr-highlight mark {
  background: var(--danger-dim);
  color: var(--danger);
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 5px;
  border: 1px solid var(--danger-border);
}
.ipr-highlight mark.mid { background: var(--primary-soft); color: var(--primary); border-color: var(--primary-border); }

/* ============================================================
   右侧边栏
   ============================================================ */
.widget {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--card-shadow);
  padding: 18px 18px 16px;
}
.widget-title {
  margin: 0 0 13px;
  font-size: 13.5px; font-weight: 750; letter-spacing: 0.04em;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.widget-list { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 9px; }
.widget-list li {
  position: relative; padding-left: 16px;
  font-size: 12.5px; line-height: 1.7; color: var(--text-soft);
}
.widget-list li::before {
  content: ""; position: absolute; left: 2px; top: 9px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--primary); opacity: 0.75;
}
.widget-list li strong { color: var(--primary); }
.widget-list.check li::before {
  width: 12px; height: 7px;
  border-left: 2px solid var(--teal);
  border-bottom: 2px solid var(--teal);
  border-radius: 0; background: none;
  transform: rotate(-45deg); top: 8px; opacity: 1;
}

.accent-widget {
  background: linear-gradient(150deg, var(--navy-1), var(--navy-2));
  border-color: transparent;
  color: #dbe5f5;
}
.accent-widget .widget-title { color: #ffd9ae; border-bottom-color: rgba(255, 255, 255, 0.14); }
.accent-widget .widget-list li { color: rgba(222, 232, 248, 0.85); }
.accent-widget .widget-list li::before { background: #ffb35c; }
.accent-widget .widget-list li strong { color: #ffc46b; }

.contact-widget p { margin: 0 0 7px; font-size: 12.5px; color: var(--muted); }
.contact-widget .wechat { font-size: 13px; color: var(--text); }
.contact-widget .wechat b { font-family: var(--font-mono); color: var(--primary); font-size: 14px; letter-spacing: 0.03em; }
.contact-widget .free-tag {
  display: inline-block; margin-top: 4px;
  font-size: 11px; font-weight: 700; color: var(--teal);
  background: var(--teal-dim); border: 1px solid var(--teal-border);
  border-radius: 999px; padding: 3px 11px;
}

/* ============================================================
   遮罩（窄屏下反馈表单模态用）
   ============================================================ */
#dock-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(6, 16, 34, 0.5);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  z-index: 88;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease;
}
/* 遮罩仅在窄屏生效：桌面端联系面板不遮挡页面交互 */

/* ---------- 右侧图标式联系栏（悬停弹出二维码，极小占位） ---------- */
.contact-rail {
  position: fixed;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 85;
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.cb-item { position: relative; }
.cb-btn {
  width: 46px;
  padding: 7px 0 5px;
  border-radius: 13px;
  border: 1px solid var(--border);
  background: var(--surface);
  cursor: pointer;
  font-size: 19px;
  line-height: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  box-shadow: var(--card-shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}
.cb-label { font-size: 10px; font-weight: 700; color: var(--text-soft); letter-spacing: 0.03em; }
.cb-item:hover .cb-btn,
.cb-btn:focus-visible {
  transform: translateX(-3px);
  box-shadow: 0 10px 26px rgba(8, 26, 56, 0.22);
}
.cb-wx:hover, .cb-wx:focus-visible { border-color: #34d399; }
.cb-qq:hover, .cb-qq:focus-visible { border-color: #60a5fa; }
.cb-fb:hover, .cb-fb:focus-visible { border-color: var(--primary-border); }

/* 悬停弹出层 */
.cb-pop {
  position: absolute;
  right: calc(100% + 14px);
  top: 50%;
  transform: translateY(-50%) translateX(8px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 18px 48px rgba(8, 26, 56, 0.28);
  padding: 12px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
}
.cb-pop.qr { text-align: center; width: 178px; }
.cb-pop.qr img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 10px;
  background: #fff;
  display: block;
  margin-bottom: 8px;
}
.cb-pop.qr b { font-family: var(--font-mono); font-size: 13px; color: var(--primary); display: block; }
.cb-pop.qr small { font-size: 11px; color: var(--muted); }
.cb-pop.txt { padding: 10px 14px; white-space: nowrap; }
.cb-pop.txt b { display: block; font-size: 12.5px; }
.cb-pop.txt small { font-size: 11px; color: var(--muted); }
.cb-item:hover .cb-pop,
.cb-item:focus-within .cb-pop {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(-50%) translateX(0);
}

#contact-panel {
  position: fixed;
  right: 14px;
  top: 50%;
  width: min(310px, 94vw);
  max-height: min(78vh, 600px);   /* 按需呼出的小型表单卡，不占常驻空间 */
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  z-index: 90;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  visibility: hidden;
  transform: translate(130%, -50%);
  transition: transform 0.26s cubic-bezier(0.22, 0.8, 0.36, 1), visibility 0.26s;
  box-shadow: 0 24px 70px rgba(8, 26, 56, 0.28);
}
body.contact-open #contact-panel { visibility: visible; transform: translate(0, -50%); }

.cp-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 11px 13px;
  border-bottom: 1px solid var(--border);
}
.cp-head b { font-size: 13.5px; }
.cp-close {
  width: 28px; height: 28px;
  border-radius: 8px;
  border: 1px solid var(--border-strong);
  background: var(--surface-2);
  color: var(--muted);
  cursor: pointer;
  font-size: 12.5px;
  transition: all 0.13s ease;
}
.cp-close:hover { color: var(--danger); border-color: var(--danger-border); background: var(--danger-dim); }

.cp-body { flex: 1; overflow-y: auto; padding: 13px 14px 16px; }
.cp-note {
  font-size: 11.5px;
  color: var(--muted);
  line-height: 1.75;
  margin-top: 10px;
}
.cp-char-count {
  text-align: right;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  margin-top: -6px;
  margin-bottom: 8px;
}

.cp-foot {
  padding: 10px 18px 14px;
  border-top: 1px solid var(--border);
  font-size: 11px;
  line-height: 1.7;
  color: var(--muted);
}
.cp-foot b { color: var(--teal); }

/* ---------- 窄屏（≤1120px）：联系表单改为居中模态卡 ---------- */
@media (max-width: 1120px) {
  #contact-panel {
    right: auto;
    left: 50%;
    top: 50%;
    width: min(320px, 92vw);
    max-height: min(78vh, 640px);
    border-radius: 16px;
    transform: translate(-50%, -50%) scale(0.96);
    box-shadow: 0 30px 80px rgba(8, 26, 56, 0.35);
  }
  body.contact-open #contact-panel {
    transform: translate(-50%, -50%) scale(1);
  }
}

/* ============================================================
   Toast 轻提示
   ============================================================ */
#toast-wrap {
  position: fixed;
  top: 74px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  pointer-events: none;
}
.toast {
  background: var(--navy-1);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  border-radius: 999px;
  padding: 10px 22px;
  box-shadow: 0 10px 30px rgba(8, 26, 56, 0.35);
  animation: toast-in 0.22s ease;
  border: 1px solid rgba(255, 255, 255, 0.14);
}
.toast.ok::before { content: "✓ "; color: #2dd4bf; }
.toast.err::before { content: "✗ "; color: #ff8a8a; }
@keyframes toast-in {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  margin-top: 34px;
  background: linear-gradient(160deg, var(--navy-deep), var(--navy-1) 70%);
  color: #c6d2e6;
}
.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 44px 24px 30px;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 30px;
}
.footer-brand { display: flex; align-items: flex-start; gap: 13px; }
.footer-brand strong { font-size: 15.5px; color: #ffffff; letter-spacing: 0.03em; }
.footer-brand p { margin: 6px 0 0; font-size: 12.5px; line-height: 1.75; color: rgba(198, 210, 230, 0.75); max-width: 34ch; }
.footer-col h4 {
  margin: 4px 0 13px;
  font-size: 11.5px; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: #ffb35c;
}
.footer-col p { margin: 0 0 7px; font-size: 12.5px; line-height: 1.7; color: rgba(198, 210, 230, 0.72); }
.footer-link {
  display: block;
  background: none; border: none;
  padding: 0 0 10px;
  font-size: 13px;
  color: rgba(222, 232, 248, 0.85);
  cursor: pointer; text-align: left;
  text-decoration: none;
  transition: color 0.15s ease, transform 0.15s ease;
}
.footer-link:hover { color: #ffb35c; transform: translateX(2px); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.09);
  padding: 16px 24px;
  max-width: 1280px;
  margin: 0 auto;
  font-size: 11.5px;
  letter-spacing: 0.02em;
  color: rgba(198, 210, 230, 0.55);
  text-align: center;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1120px) {
  /* 窄屏：顶部分类下拉收起，移动端可通过首页目录/页脚进入工具 */
  .nav-links { display: none; }
  .brand-slogan, .safe-pill { display: none; }
  /* 窄屏下反馈表单为模态：显示遮罩并拦截下层点击 */
  body.contact-open #dock-backdrop { opacity: 1; pointer-events: auto; }
}
@media (max-width: 720px) {
  .nav-inner { gap: 10px; padding: 0 12px; }
  .nav-link { padding: 16px 9px 14px; font-size: 13px; }
  .hero-inner { padding: 28px 16px 32px; }
  .layout { padding: 20px 14px 6px; }
  .tool-card { padding: 18px 16px; border-radius: 14px; }
  .tool-flag { display: none; }
  .file-table { font-size: 12px; }
  .footer-inner { grid-template-columns: 1fr 1fr; padding: 32px 16px 22px; }
  .footer-brand { grid-column: 1 / -1; }
  .result-main { font-size: 22px; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}