/* ============================================================
   智关通 · HS 编码智能查询 —— 苹果风格设计系统
   设计依据：ui-ux-pro-max(Trust&Authority) + apple-design + emil-design-eng + mobile-native
   ============================================================ */

:root {
  /* ---- 色彩：苹果灰阶 + 系统蓝 ---- */
  --bg: #f5f5f7;
  --bg-elevated: #ffffff;
  --fg: #1d1d1f;
  --fg-secondary: #6e6e73;
  --fg-tertiary: #86868b;
  --border: rgba(0, 0, 0, 0.08);
  --fill: rgba(0, 0, 0, 0.04);
  --accent: #007aff;
  --accent-strong: #0062cc;
  --accent-soft: rgba(0, 122, 255, 0.10);
  --success: #34c759;
  --danger: #ff3b30;
  --chip-bg: #ffffff;
  --glass: rgba(245, 245, 247, 0.72);
  --bubble-ai: #ffffff;
  --bubble-me: #007aff;
  --bubble-me-fg: #ffffff;

  /* ---- 圆角与阴影 ---- */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 22px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.04), 0 10px 28px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 8px rgba(0, 0, 0, 0.05), 0 20px 48px rgba(0, 0, 0, 0.10);

  /* ---- 字体 ---- */
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display",
    "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas,
    "Courier New", monospace;

  /* ---- 动效 ---- */
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-inout: cubic-bezier(0.77, 0, 0.175, 1);
  --t-fast: 120ms;
  --t-base: 200ms;
  --t-slow: 300ms;

  /* ---- 布局 ---- */
  --header-h: 52px;
  --max-w: 980px;

  color-scheme: light dark;
}

/* 深色主题：由页面右上角按钮手动切换（默认浅色） */
html[data-theme="dark"] {
  --bg: #000000;
  --bg-elevated: #1c1c1e;
  --fg: #f5f5f7;
  --fg-secondary: #a1a1a6;
  --fg-tertiary: #86868b;
  --border: rgba(255, 255, 255, 0.10);
  --fill: rgba(255, 255, 255, 0.08);
  --accent: #0a84ff;
  --accent-strong: #409cff;
  --accent-soft: rgba(10, 132, 255, 0.18);
  --chip-bg: #1c1c1e;
  --glass: rgba(18, 18, 20, 0.78);
  --bubble-ai: #1c1c1e;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 2px 6px rgba(0, 0, 0, 0.5), 0 12px 32px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 4px 10px rgba(0, 0, 0, 0.5), 0 24px 56px rgba(0, 0, 0, 0.6);
}

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

html {
  -webkit-tap-highlight-color: transparent;
  -webkit-text-size-adjust: 100%;
  overscroll-behavior: none;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  background: var(--bg);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background var(--t-base) var(--ease-out), color var(--t-base) var(--ease-out);
}

main { max-width: var(--max-w); margin: 0 auto; padding: 0 20px; }

button, input {
  font-family: inherit;
  font-size: 16px; /* ≥16px：防 iOS 聚焦自动缩放 */
  color: inherit;
}

button, a, [role="button"] {
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}

a { color: var(--accent); text-decoration: none; }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}
::selection { background: var(--accent-soft); }

.hidden { display: none !important; }
.muted { color: var(--fg-secondary); }

/* ---- 毛玻璃顶栏 ---- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: calc(env(safe-area-inset-top, 0px) + 0px) max(20px, env(safe-area-inset-right, 0px)) 0 max(20px, env(safe-area-inset-left, 0px));
  background: var(--glass);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  cursor: pointer;
  transition: opacity var(--t-base) var(--ease-out);
}
.brand:active { opacity: 0.6; }

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #007aff, #5856d6);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  box-shadow: 0 2px 6px rgba(0, 122, 255, 0.35);
}

.brand-name { font-weight: 700; font-size: 16px; letter-spacing: -0.01em; }
.brand-sub { font-size: 12px; color: var(--fg-secondary); font-weight: 400; }

.nav { display: flex; align-items: center; gap: 4px; }

.nav a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border-radius: 9px;
  color: var(--fg);
  font-size: 14px;
  font-weight: 500;
  transition: background var(--t-base) var(--ease-out), transform var(--t-fast) var(--ease-out);
}
.nav a:active { transform: scale(0.96); }
.nav a svg { width: 15px; height: 15px; }
.nav a.active { background: var(--accent-soft); color: var(--accent); }
.nav a:not(.active):hover { background: var(--fill); }

/* 主题切换按钮 */
.theme-toggle {
  width: 34px;
  height: 34px;
  margin-left: 6px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--fill);
  color: var(--fg);
  cursor: pointer;
  transition: transform var(--t-fast) var(--ease-out), background var(--t-base) var(--ease-out);
}
.theme-toggle:active { transform: scale(0.92); }
.theme-toggle svg { width: 17px; height: 17px; }
html[data-theme="light"] .icon-sun { display: none; }
html[data-theme="dark"] .icon-moon { display: none; }

/* ---- 视图切换 ---- */
.view { animation: viewIn var(--t-slow) var(--ease-out) both; }
@keyframes viewIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---- 首页 Hero ---- */
.hero {
  padding: 72px 0 40px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.hero-sub {
  margin: 14px auto 0;
  max-width: 560px;
  font-size: clamp(1rem, 2.4vw, 1.15rem);
  color: var(--fg-secondary);
  letter-spacing: 0;
}

/* ---- 查询模式分段控件（苹果 iOS 分段） ---- */
.seg {
  display: inline-flex;
  margin: 28px auto 0;
  padding: 3px;
  background: var(--fill);
  border-radius: 999px;
  position: relative;
}
.seg-btn {
  position: relative;
  border: none;
  background: transparent;
  padding: 9px 22px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--fg-secondary);
  cursor: pointer;
  transition: color var(--t-base) var(--ease-out), background var(--t-base) var(--ease-out);
  white-space: nowrap;
}
.seg-btn.active {
  background: var(--bg-elevated);
  color: var(--fg);
  font-weight: 600;
  box-shadow: var(--shadow-sm), 0 0 0 0.5px var(--border);
}
.seg-btn:active { transform: scale(0.97); }

/* ---- 模式面板 ---- */
.mode-panel { margin-top: 24px; }
.mode-hint {
  font-size: 13px;
  color: var(--fg-secondary);
  margin-top: 8px;
}

/* ---- 国家选择按钮行 ---- */
.country-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  position: relative;
}
.country-row.compact { margin-top: 18px; }
.country-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  color: var(--fg);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out), transform var(--t-fast) var(--ease-out);
}
.country-btn:hover { border-color: var(--accent); }
.country-btn:active { transform: scale(0.97); }
.country-btn .flag { font-size: 17px; line-height: 1; }
.country-btn .cname { white-space: nowrap; }
.country-btn .chev { width: 9px; height: 6px; color: var(--fg-tertiary); transition: transform var(--t-base) var(--ease-out); }
.country-btn[aria-expanded="true"] .chev { transform: rotate(180deg); }
.swap-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  border-radius: 999px;
  color: var(--fg-secondary);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--t-base) var(--ease-out), transform var(--t-fast) var(--ease-out), color var(--t-base) var(--ease-out);
}
.swap-btn:hover { color: var(--accent); border-color: var(--accent); }
.swap-btn:active { transform: scale(0.93) rotate(180deg); }
.swap-btn svg { width: 15px; height: 15px; }
.route-arrow { color: var(--fg-tertiary); font-size: 14px; flex: none; }

/* ---- 国家下拉弹层（毛玻璃） ---- */
.country-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  min-width: 240px;
  max-width: 86vw;
  max-height: 320px;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--glass);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
  padding: 6px;
  z-index: 60;
  transform-origin: top center;
  animation: ddIn 160ms var(--ease-out) both;
  /* 取消滚动条：视觉上完全隐藏，触控滚动仍可用 */
  scrollbar-width: none;
}
.country-dropdown::-webkit-scrollbar { display: none; }
.country-dropdown::-webkit-scrollbar-track { display: none; }
.country-dropdown::-webkit-scrollbar-thumb { display: none; }
@keyframes ddIn {
  from { opacity: 0; transform: translateX(-50%) scale(0.96); }
  to { opacity: 1; transform: translateX(-50%) scale(1); }
}
.dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border: none;
  background: transparent;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--fg);
  text-align: left;
  cursor: pointer;
  transition: background var(--t-fast) var(--ease-out);
}
.dropdown-item:hover { background: var(--fill); }
.dropdown-item .flag { font-size: 16px; line-height: 1; }
.dropdown-item .nm { flex: 1; }
.dropdown-item .tag {
  font-size: 11px;
  color: var(--fg-tertiary);
  font-weight: 400;
}
.dropdown-item.selected {
  color: var(--accent);
  font-weight: 600;
}
.dropdown-item.selected::after {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  margin-left: 2px;
}
@media (hover: hover) and (pointer: fine) {
  .dropdown-item:hover { background: var(--fill); }
}

/* ---- 建设中弹窗（苹果风格 modal） ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(0, 0, 0, 0.4);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  animation: ovIn 200ms var(--ease-out) both;
}
@keyframes ovIn { from { opacity: 0; } to { opacity: 1; } }
.modal-card {
  width: 100%;
  max-width: 340px;
  background: var(--bg-elevated);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-lg);
  padding: 26px 24px 20px;
  text-align: center;
  animation: cardIn 240ms var(--ease-out) both;
}
@keyframes cardIn {
  from { opacity: 0; transform: scale(0.94) translateY(6px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}
.modal-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-icon svg { width: 24px; height: 24px; }
.modal-card h3 { font-size: 17px; font-weight: 600; letter-spacing: -0.01em; margin-bottom: 6px; }
.modal-card p { font-size: 14px; color: var(--fg-secondary); line-height: 1.6; }
.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}
.modal-actions button,
.modal-actions a {
  flex: 1;
  height: 42px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: transform var(--t-fast) var(--ease-out), background var(--t-base) var(--ease-out), opacity var(--t-base) var(--ease-out);
}
.modal-actions button:active,
.modal-actions a:active { transform: scale(0.97); }
.btn-ghost {
  background: var(--fill);
  border: none;
  color: var(--fg);
}
.btn-ghost:hover { opacity: 0.85; }
.btn-primary {
  background: var(--accent);
  border: none;
  color: #fff;
}
.btn-primary:hover { background: var(--accent-strong); }
@media (prefers-reduced-motion: reduce) {
  .modal-card, .country-dropdown { animation: none; }
  .modal-overlay { animation: none; }
}

.route-badge {
  font-size: 13px;
  color: var(--fg-secondary);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 12px;
  white-space: nowrap;
  cursor: pointer;
  transition: border-color var(--t-base) var(--ease-out);
}
.route-badge:hover { border-color: var(--accent); }

/* 搜索框 */
.search-box {
  margin: 34px auto 0;
  max-width: 600px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 6px 6px 18px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--t-base) var(--ease-out), border-color var(--t-base) var(--ease-out);
}
.search-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft), var(--shadow-md);
}
.search-box svg.search-ico { width: 18px; height: 18px; color: var(--fg-tertiary); flex: none; }

.search-box input {
  flex: 1;
  min-width: 0;
  border: none;
  outline: none;
  background: transparent;
  height: 42px;
}
.search-box input::placeholder { color: var(--fg-tertiary); }

.search-box button {
  flex: none;
  height: 42px;
  padding: 0 24px;
  border: none;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: transform var(--t-fast) var(--ease-out), background var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out);
  box-shadow: 0 2px 8px rgba(0, 122, 255, 0.3);
}
.search-box button:active { transform: scale(0.97); }

/* 热门 chips */
.chips {
  margin: 22px auto 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}
.chip-label { font-size: 13px; color: var(--fg-tertiary); align-self: center; }

.chip {
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--chip-bg);
  color: var(--fg-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: transform var(--t-fast) var(--ease-out), border-color var(--t-base) var(--ease-out), color var(--t-base) var(--ease-out);
}
.chip:active { transform: scale(0.96); }

/* AI 入口 */
.ai-entry {
  margin: 30px auto 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--fg);
  font-size: 14px;
  font-weight: 500;
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-fast) var(--ease-out), box-shadow var(--t-base) var(--ease-out), border-color var(--t-base) var(--ease-out);
}
.ai-entry svg { width: 15px; height: 15px; color: var(--accent); }
.ai-entry:active { transform: scale(0.97); }

/* 特性卡片 */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding: 20px 0 72px;
}

.feat {
  padding: 26px 24px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out);
}
.feat svg { width: 26px; height: 26px; color: var(--accent); margin-bottom: 14px; }
.feat h3 { font-size: 16px; font-weight: 600; letter-spacing: -0.01em; margin-bottom: 6px; }
.feat p { font-size: 14px; color: var(--fg-secondary); line-height: 1.6; }

/* ---- 搜索页 ---- */
.subbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 0 14px;
  flex-wrap: wrap;
}
.subbar .search-box {
  margin: 0;
  max-width: 460px;
  flex: 1 1 280px;
  padding-left: 14px;
}
.subbar .search-box button { height: 38px; padding: 0 18px; font-size: 14px; }
.subbar .search-box input { height: 38px; }
#result-count { font-size: 13px; color: var(--fg-secondary); white-space: nowrap; }
.subbar .route-badge { margin-left: auto; }

/* 结果列表 */
.result-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 0 0 64px;
}

.result-item {
  padding: 14px 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out), border-color var(--t-base) var(--ease-out);
  animation: itemIn 320ms var(--ease-out) both;
}
@keyframes itemIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}
.result-item:active { transform: scale(0.99); }

/* 第一行：编码（左）+ 税率胶囊（右） */
.result-item .r-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 6px;
}
.result-item .code {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.02em;
  flex: none;
}
.result-item .rate {
  flex: none;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}
/* 第二行起：名称（中文大字 + 英文小字，独立整行，不再被税率挤压） */
.result-item .nm {
  display: block;
  font-size: 14.5px;
  line-height: 1.5;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}
.result-item .zh-name {
  display: block;
  font-weight: 600;
  color: var(--fg);
}
.result-item .en-name {
  display: block;
  font-size: 12.5px;
  color: var(--fg-secondary);
  margin-top: 2px;
}
.result-item .meta { display: none; }

/* ---- 详情页 ---- */
.back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--fg);
  font-size: 14px;
  padding: 6px 10px;
  border-radius: 8px;
  transition: background var(--t-base) var(--ease-out);
}
.back svg { width: 15px; height: 15px; }

.detail-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  padding: 28px;
  margin-bottom: 16px;
}

.code-big {
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 5vw, 2.2rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--accent);
}
.name-big {
  margin-top: 10px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.55;
  letter-spacing: -0.01em;
}

.dest-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 3px 10px;
  margin-bottom: 14px;
}
.name-sub {
  margin-top: 8px;
  font-size: 13px;
  color: var(--fg-secondary);
  line-height: 1.6;
}

.rate-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-top: 22px;
}
.rate-cell {
  padding: 16px 18px;
  background: var(--fill);
  border-radius: var(--r-md);
}
.rate-cell .k { font-size: 12px; color: var(--fg-secondary); margin-bottom: 4px; }
.rate-cell .v { font-size: 20px; font-weight: 700; letter-spacing: -0.01em; font-variant-numeric: tabular-nums; }

.detail-card h2 { font-size: 15px; font-weight: 600; margin-bottom: 10px; }
.raw-block {
  font-size: 13px;
  color: var(--fg-secondary);
  line-height: 1.7;
  background: var(--fill);
  border-radius: var(--r-sm);
  padding: 14px 16px;
  word-break: break-all;
}

.tip {
  margin: 4px 0 64px;
  font-size: 13px;
  color: var(--fg-tertiary);
  line-height: 1.6;
}

/* ---- AI 归类 ---- */
.chat-head { padding: 22px 0 12px; }
.chat-head h2 { font-size: 22px; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 6px; }
.chat-head p { font-size: 13px; }

.chat-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 8px 0 16px;
  max-height: 56vh;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.msg { display: flex; }
.msg.me { justify-content: flex-end; }

.bubble {
  max-width: 78%;
  padding: 11px 16px;
  border-radius: 18px;
  font-size: 15px;
  line-height: 1.55;
  animation: bubbleIn 260ms var(--ease-out) both;
}
@keyframes bubbleIn {
  from { opacity: 0; transform: translateY(6px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.msg.ai .bubble {
  background: var(--bubble-ai);
  border: 1px solid var(--border);
  border-bottom-left-radius: 6px;
  box-shadow: var(--shadow-sm);
}
.msg.me .bubble {
  background: var(--bubble-me);
  color: var(--bubble-me-fg);
  border-bottom-right-radius: 6px;
}

/* AI 候选卡片 */
.cand {
  display: block;
  width: 100%;
  text-align: left;
  padding: 12px 14px;
  margin-top: 8px;
  background: var(--fill);
  border-radius: var(--r-md);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: transform var(--t-fast) var(--ease-out), border-color var(--t-base) var(--ease-out), background var(--t-base) var(--ease-out);
}
.cand:active { transform: scale(0.98); }
.cand .c-code { font-family: var(--font-mono); font-weight: 700; color: var(--accent); font-size: 15px; }
.cand .c-name { font-size: 14px; margin-left: 8px; }
.cand .c-score {
  float: right;
  font-size: 12px;
  color: var(--success);
  font-weight: 600;
}
.cand .c-infer {
  float: right;
  margin-right: 8px;
  font-size: 11px;
  font-weight: 700;
  padding: 1px 7px;
  border-radius: 6px;
  background: rgba(255, 149, 0, 0.14);
  color: #e07b00;
}
.cand .c-reason { font-size: 12.5px; color: var(--fg-secondary); margin-top: 6px; line-height: 1.6; }

.chat-note { font-size: 12px; color: var(--fg-tertiary); margin-top: 10px; }

/* AI 归类配额提示（消息样式，不弹窗） */
.chat-quota {
  padding: 4px 2px;
}
.chat-quota-title {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--fg);
  margin-bottom: 4px;
}
.chat-quota-desc {
  font-size: 13px;
  line-height: 1.6;
  color: var(--fg-secondary);
}
.chat-quota-link {
  display: inline-flex;
  align-items: center;
  margin-top: 10px;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: transform var(--t-fast) var(--ease-out), background var(--t-base) var(--ease-out);
}
.chat-quota-link:hover { background: var(--accent-strong); }
.chat-quota-link:active { transform: scale(0.97); }

/* 聊天输入 */
.chat-input {
  display: flex;
  gap: 8px;
  padding: 10px 0 40px;
}
.chat-input input {
  flex: 1;
  height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  outline: none;
  transition: border-color var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out);
}
.chat-input input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.chat-input button {
  flex: none;
  height: 46px;
  padding: 0 22px;
  border: none;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--t-fast) var(--ease-out), background var(--t-base) var(--ease-out);
}
.chat-input button:active { transform: scale(0.97); }

/* ---- 导航认证区 ---- */
.nav-auth { display: flex; align-items: center; margin-left: 2px; }
.login-btn {
  display: inline-flex; align-items: center; gap: 5px;
  height: 30px; padding: 0 14px;
  border: none; border-radius: 980px;
  background: var(--accent); color: #fff;
  font-size: 13.5px; font-weight: 600;
  cursor: pointer;
  transition: transform 160ms var(--ease-out), background var(--t-base) var(--ease-out);
}
.login-btn svg { width: 14px; height: 14px; }
.login-btn:active { transform: scale(0.96); }

.user-chip { position: relative; }
.user-btn {
  display: inline-flex; align-items: center; gap: 6px;
  height: 30px; padding: 0 8px 0 4px;
  border: none; border-radius: 980px; background: transparent;
  font-size: 13.5px; font-weight: 600; color: var(--fg);
  cursor: pointer;
  transition: transform 160ms var(--ease-out), background var(--t-base) var(--ease-out);
}
.user-btn .avatar {
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--accent); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700;
}
.user-btn .chev { width: 9px; height: 6px; opacity: 0.6; }
.user-btn:active { transform: scale(0.96); }
.user-menu {
  position: absolute; right: 0; top: calc(100% + 6px);
  min-width: 208px;
  background: var(--chip-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  padding: 6px;
  transform-origin: top right;
  animation: menu-in 180ms var(--ease-out);
  z-index: 60;
}
@keyframes menu-in {
  from { opacity: 0; transform: scale(0.95) translateY(-4px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}
.user-menu-head { padding: 8px 12px; border-bottom: 1px solid var(--border); margin-bottom: 6px; }
.user-menu-head .um-email { display: block; font-size: 13px; font-weight: 600; color: var(--fg); overflow: hidden; text-overflow: ellipsis; }
.user-menu-head .um-role { display: block; font-size: 11.5px; color: var(--fg-tertiary); margin-top: 1px; }
.um-item {
  display: flex; align-items: center; gap: 8px;
  width: 100%; padding: 9px 12px;
  border: none; border-radius: 9px; background: transparent;
  font-size: 13.5px; color: var(--fg); text-align: left;
  cursor: pointer;
  transition: background var(--t-fast) var(--ease-out);
}
.um-item svg { width: 15px; height: 15px; opacity: 0.7; }
.um-item:active { background: var(--fill); transform: scale(0.98); }
#um-logout { color: var(--danger); }

/* ---- 登录 / 注册 ---- */
.auth-wrap {
  min-height: calc(100dvh - var(--header-h) - 40px);
  display: flex; align-items: center; justify-content: center;
  padding: 40px 0 72px;
}
.auth-card {
  width: 100%; max-width: 400px;
  background: var(--glass);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-lg);
  padding: 28px 28px 32px;
  animation: auth-in 260ms var(--ease-out);
}
@keyframes auth-in {
  from { opacity: 0; transform: translateY(8px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.auth-required {
  display: flex; align-items: center; gap: 8px;
  margin: 0 0 14px; padding: 10px 14px;
  border-radius: 10px;
  background: var(--accent-soft); color: var(--accent);
  font-size: 13px; font-weight: 600;
}
.auth-required svg { width: 18px; height: 18px; flex: none; }

.auth-seg {
  display: flex; padding: 3px; margin-bottom: 22px;
  background: var(--fill); border-radius: 10px;
}
.auth-seg-btn {
  flex: 1; height: 34px; border: none; border-radius: 8px;
  background: transparent; font-size: 14px; font-weight: 600;
  color: var(--fg-secondary); cursor: pointer;
  transition: background 200ms var(--ease-out), color 200ms var(--ease-out);
}
.auth-seg-btn.active {
  background: var(--chip-bg); color: var(--fg);
  box-shadow: var(--shadow-sm);
}
.auth-seg-btn:active { transform: scale(0.98); }
.auth-form .field { margin-bottom: 16px; }
.auth-form label {
  display: block; font-size: 13px; font-weight: 600;
  color: var(--fg-secondary); margin-bottom: 6px;
}
.auth-form label .opt { font-weight: 400; color: var(--fg-tertiary); }
.auth-form input[type="email"],
.auth-form input[type="password"],
.auth-form input[type="text"] {
  width: 100%; height: 44px; padding: 0 14px;
  background: var(--bg-elevated);
  border: 1px solid var(--border); border-radius: 10px;
  outline: none;
  transition: border-color var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out);
}
.auth-form input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3.5px var(--accent-soft);
}
.captcha-row { display: flex; gap: 10px; }
.captcha-row input { flex: 1; }
.captcha-img {
  flex: none; width: 130px; height: 44px; padding: 3px;
  background: var(--bg-elevated);
  border: 1px solid var(--border); border-radius: 10px;
  cursor: pointer; overflow: hidden;
  transition: transform 160ms var(--ease-out), border-color var(--t-base) var(--ease-out);
}
.captcha-img img { width: 100%; height: 100%; object-fit: contain; display: block; }
.captcha-img:active { transform: scale(0.97); }
.auth-row { display: flex; align-items: center; justify-content: flex-start; margin: 14px 0 6px; }
.remember {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13.5px; color: var(--fg-secondary); cursor: pointer;
}
.remember input { position: absolute; opacity: 0; width: 0; height: 0; }
.remember .checkmark {
  width: 18px; height: 18px; flex: none;
  border: 1.5px solid var(--fg-tertiary); border-radius: 6px;
  display: inline-flex; align-items: center; justify-content: center;
  transition: background var(--t-fast) var(--ease-out), border-color var(--t-fast) var(--ease-out);
}
.remember input:checked + .checkmark {
  background: var(--accent); border-color: var(--accent);
}
.remember input:checked + .checkmark::after {
  content: ""; width: 9px; height: 5px;
  border: 2px solid #fff; border-top: none; border-right: none;
  transform: rotate(-45deg) scale(1);
  margin-top: -2px;
  animation: check-pop 160ms var(--ease-out);
}
@keyframes check-pop {
  from { transform: rotate(-45deg) scale(0.5); opacity: 0.3; }
  to { transform: rotate(-45deg) scale(1); opacity: 1; }
}
.auth-error {
  min-height: 18px; margin: 6px 0 2px;
  font-size: 13px; color: var(--danger);
}
.auth-error.shake { animation: shake 380ms var(--ease-out); }
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  55% { transform: translateX(4px); }
  80% { transform: translateX(-2px); }
}
.auth-submit {
  width: 100%; height: 46px; margin-top: 10px;
  border: none; border-radius: 12px;
  background: var(--accent); color: #fff;
  font-size: 15.5px; font-weight: 600; letter-spacing: 0.04em;
  cursor: pointer;
  transition: transform 160ms var(--ease-out), background var(--t-base) var(--ease-out);
}
.auth-submit:active { transform: scale(0.97); }
.auth-submit:disabled { opacity: 0.6; cursor: default; }

/* ---- 管理后台 ---- */
.admin-wrap { max-width: 760px; margin: 0 auto 72px; padding: 32px 0 0; }
.admin-head { margin-bottom: 24px; }
.admin-head h2 { font-size: 24px; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 6px; }
.admin-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  padding: 24px;
  margin-bottom: 18px;
  animation: auth-in 240ms var(--ease-out);
}
.admin-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 16px; letter-spacing: -0.01em; }
.admin-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.admin-seg {
  display: flex; padding: 3px; gap: 2px;
  background: var(--fill); border-radius: 10px;
}
.admin-seg button {
  flex: 1; height: 36px; border: none; border-radius: 8px;
  background: transparent; font-size: 13px; font-weight: 600;
  color: var(--fg-secondary); cursor: pointer;
  transition: background 200ms var(--ease-out), color 200ms var(--ease-out);
}
.admin-seg button.active { background: var(--chip-bg); color: var(--fg); box-shadow: var(--shadow-sm); }
.admin-seg button:active { transform: scale(0.98); }
.file-drop {
  display: flex; align-items: center; gap: 10px;
  height: 44px; padding: 0 14px;
  border: 1.5px dashed var(--fg-tertiary); border-radius: 10px;
  color: var(--fg-secondary); font-size: 13px;
  cursor: pointer;
  transition: border-color var(--t-base) var(--ease-out), background var(--t-base) var(--ease-out);
}
.file-drop svg { width: 18px; height: 18px; opacity: 0.6; flex: none; }
.file-drop:active { transform: scale(0.99); }
.admin-actions { display: flex; gap: 12px; margin-top: 18px; }
.admin-actions .btn-primary {
  height: 42px; padding: 0 20px; border: none; border-radius: 10px;
  background: var(--accent); color: #fff; font-size: 14px; font-weight: 600;
  cursor: pointer;
  transition: transform 160ms var(--ease-out), background var(--t-base) var(--ease-out);
}
.admin-actions .btn-primary:active { transform: scale(0.97); }
.admin-actions .btn-primary:disabled { opacity: 0.5; cursor: default; }
.admin-actions .btn-ghost {
  height: 42px; padding: 0 20px; border: 1px solid var(--border); border-radius: 10px;
  background: transparent; color: var(--fg); font-size: 14px; font-weight: 600;
  cursor: pointer;
  transition: transform 160ms var(--ease-out), background var(--t-base) var(--ease-out);
}
.admin-actions .btn-ghost:active { transform: scale(0.97); }
.admin-actions .btn-ghost:disabled { opacity: 0.5; cursor: default; }
.admin-report, .admin-diff {
  margin-top: 16px; padding: 14px 16px;
  background: var(--accent-soft); border-radius: 10px;
  font-size: 13px; line-height: 1.6;
}
.rep-title { font-weight: 700; margin-bottom: 4px; }
.rep-stats { color: var(--fg); }
.rep-err { color: var(--danger); margin-top: 6px; }
.rep-warn { color: #d97706; margin-top: 4px; }
.rep-detail { color: var(--fg-secondary); margin-top: 4px; overflow-wrap: anywhere; }
.admin-versions { display: flex; flex-direction: column; gap: 8px; }
.v-item {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  padding: 10px 14px;
  border: 1px solid var(--border); border-radius: 10px;
  background: var(--bg);
  font-size: 13px;
}
.v-label { font-weight: 700; font-family: var(--font-mono); font-size: 13.5px; }
.v-scope {
  font-size: 11px; padding: 2px 8px; border-radius: 6px;
  background: var(--fill); color: var(--fg-secondary);
}
.v-status { font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 6px; }
.v-status.pub { background: rgba(52, 199, 89, 0.14); color: var(--success); }
.v-status.draft { background: var(--accent-soft); color: var(--accent); }
.v-meta { color: var(--fg-tertiary); font-size: 12px; margin-left: auto; }

/* 一键更新（自动获取官方税则） */
.fetch-row { display: flex; flex-direction: column; gap: 12px; }
.fetch-item {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--border); border-radius: 12px;
  background: var(--bg);
}
.fetch-flag { font-size: 26px; flex: none; line-height: 1; }
.fetch-main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.fetch-main b { font-size: 14.5px; font-weight: 700; }
.fetch-main .muted { font-size: 12px; color: var(--fg-tertiary); line-height: 1.45; }
.fetch-btn {
  flex: none; height: 38px; padding: 0 16px;
  border: none; border-radius: 999px;
  background: var(--accent); color: #fff;
  font-size: 13.5px; font-weight: 600; cursor: pointer;
  transition: transform 160ms var(--ease-out), background var(--t-base) var(--ease-out), opacity var(--t-base) var(--ease-out);
}
.fetch-btn:active { transform: scale(0.97); }
.fetch-btn:hover { background: var(--accent-strong); }
.fetch-btn:disabled { opacity: 0.6; cursor: default; }
.fetch-cn-row { display: flex; gap: 10px; padding: 0 2px; }
.fetch-cn-row input {
  flex: 1; height: 42px; padding: 0 14px;
  border: 1px solid var(--border); border-radius: 10px;
  background: var(--bg); color: var(--fg);
  font-size: 13.5px; min-width: 0;
}
.fetch-cn-row input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.rep-actions { margin-top: 12px; }
.rep-actions .btn-primary {
  height: 40px; padding: 0 18px; border: none; border-radius: 999px;
  background: var(--accent); color: #fff; font-size: 13.5px; font-weight: 600;
  cursor: pointer;
  transition: transform 160ms var(--ease-out), background var(--t-base) var(--ease-out);
}
.rep-actions .btn-primary:active { transform: scale(0.97); }
@media (max-width: 560px) {
  .fetch-item { flex-wrap: wrap; }
  .fetch-flag { font-size: 22px; }
  .fetch-btn { width: 100%; }
  .fetch-cn-row { flex-direction: column; }
  .fetch-cn-row .fetch-btn { width: 100%; }
}

/* ---- 关于 ---- */
.about-card {
  max-width: 640px;
  margin: 24px auto 72px;
  padding: 32px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
}
.about-card h2 { font-size: 22px; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 16px; }
.about-card p { font-size: 14.5px; line-height: 1.7; margin-bottom: 12px; color: var(--fg-secondary); }
.about-card b { color: var(--fg); font-weight: 600; }

/* ---- Footer ---- */
.footer {
  padding: 20px max(20px, env(safe-area-inset-right, 0px)) calc(20px + env(safe-area-inset-bottom, 0px)) max(20px, env(safe-area-inset-left, 0px));
  text-align: center;
  font-size: 12px;
  color: var(--fg-tertiary);
  border-top: 1px solid var(--border);
}

/* ---- 空状态 ---- */
.empty { text-align: center; padding: 60px 0 80px; }
.empty p { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.empty .muted { font-size: 14px; font-weight: 400; }

/* ---- Hover 态：仅精确指针设备 ---- */
@media (hover: hover) and (pointer: fine) {
  .chip:hover { border-color: var(--accent); color: var(--accent); }
  .ai-entry:hover { border-color: var(--accent); box-shadow: var(--shadow-md); transform: translateY(-1px); }
  .feat:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
  .result-item:hover { border-color: var(--accent); box-shadow: var(--shadow-md); transform: translateY(-1px); }
  .cand:hover { border-color: var(--accent); background: var(--accent-soft); }
  .nav a:hover { background: var(--fill); }
  .back:hover { background: var(--fill); }
  .search-box button:hover { background: var(--accent-strong); }
  .chat-input button:hover { background: var(--accent-strong); }
  .login-btn:hover { background: var(--accent-strong); }
  .user-btn:hover { background: var(--fill); }
  .captcha-img:hover { border-color: var(--accent); }
  .auth-seg-btn:hover { color: var(--fg); }
  .file-drop:hover { border-color: var(--accent); background: var(--accent-soft); }
  .admin-seg button:hover { color: var(--fg); }
}

/* ---- 订阅系统（套餐徽标 / 配额条 / 会员页 / 升级弹窗） ---- */
.plan-badge {
  display: inline-block;
  flex: none;
  padding: 2px 8px;
  margin-left: 6px;
  border-radius: 999px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.5;
}
.plan-badge.p-free { background: var(--fill); color: var(--fg-secondary); }
.plan-badge.p-vip { background: linear-gradient(135deg, #d4a017, #f0c75e); color: #fff; }
.plan-badge.p-svip { background: linear-gradient(135deg, #7a5cff, #b79aff); color: #fff; }

.quota-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 10px 0 14px;
  padding: 8px 12px;
  border-radius: 10px;
  background: var(--fill);
  border: 1px solid var(--border);
  font-size: 12.5px;
  color: var(--fg-secondary);
}
.quota-bar .qb-label { flex: none; font-weight: 600; color: var(--fg); }
.quota-bar .qb-track {
  flex: 1;
  height: 6px;
  border-radius: 999px;
  background: var(--border);
  overflow: hidden;
}
.quota-bar .qb-fill {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: var(--accent);
  transition: width 300ms var(--ease-out);
}
.quota-bar .qb-num { flex: none; font-variant-numeric: tabular-nums; }
.quota-bar .qb-up {
  flex: none;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--on-accent);
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
}
.quota-bar .qb-up:active { transform: scale(0.96); }

/* 会员页 */
.plans-hero { text-align: center; padding: 36px 0 8px; }
.plans-hero h2 { font-size: 26px; letter-spacing: -0.02em; }
.plans-hero .muted { margin-top: 4px; }
.plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  max-width: 860px;
  margin: 26px auto 0;
}
.plan-card {
  position: relative;
  padding: 22px 20px 18px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-base) var(--ease-out), border-color var(--t-base) var(--ease-out);
}
.plan-card.hot { border-color: var(--accent); box-shadow: 0 8px 28px rgba(0, 0, 0, 0.08); }
.plan-card.current { outline: 2px solid var(--accent); outline-offset: 2px; }
.plan-card .pc-tag {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  padding: 3px 12px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--on-accent);
  font-size: 11px;
  font-weight: 700;
}
.plan-card .pc-head h3 { font-size: 18px; letter-spacing: -0.01em; }
.plan-card .pc-price { margin-top: 6px; display: flex; align-items: baseline; gap: 4px; }
.plan-card .pc-amt { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; }
.plan-card .pc-per { font-size: 13px; color: var(--fg-secondary); }
.plan-card .pc-list { margin: 16px 0; padding: 0; list-style: none; }
.plan-card .pc-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 0;
  font-size: 13.5px;
  color: var(--fg);
}
.plan-card .pc-list li b { font-weight: 700; }
.plan-card .pc-list li .pc-x { color: var(--fg-secondary); text-decoration: line-through; }
.plan-card .pc-foot { display: flex; justify-content: center; }
.plan-card .pc-btn {
  display: inline-block;
  width: 100%;
  padding: 10px 0;
  text-align: center;
  border-radius: 12px;
  background: var(--accent);
  color: var(--on-accent);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: transform var(--t-fast) var(--ease-out);
}
.plan-card .pc-btn:active { transform: scale(0.97); }
.plan-card .pc-cur {
  display: inline-block;
  width: 100%;
  padding: 10px 0;
  text-align: center;
  border-radius: 12px;
  border: 1px solid var(--border);
  color: var(--fg-secondary);
  font-size: 13.5px;
  font-weight: 600;
}
.plans-note {
  max-width: 720px;
  margin: 24px auto 0;
  text-align: center;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--fg-secondary);
}

/* ---- 消息与用户管理（P7） ---- */
.nav-ico-wrap { position: relative; display: inline-flex; }
.nav-dot {
  position: absolute; top: -2px; right: -4px;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--danger);
  box-shadow: 0 0 0 2px var(--glass);
}
.user-menu .um-item { display: flex; align-items: center; gap: 8px; }
.um-badge {
  margin-left: auto; min-width: 18px; height: 18px; padding: 0 5px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 999px; background: var(--danger); color: #fff;
  font-size: 11px; font-weight: 700; line-height: 1;
}

.msg-wrap { max-width: 760px; margin: 0 auto 72px; padding: 32px 0 0; }
.msg-head { margin-bottom: 20px; }
.msg-head h2 { font-size: 24px; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 6px; }
.msg-toolbar { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.msg-toolbar .admin-seg { width: 220px; flex: none; }
.msg-toolbar .btn-ghost { height: 42px; padding: 0 18px; margin-left: auto; }

.msg-compose {
  background: var(--bg-elevated);
  border: 1px solid var(--border); border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  padding: 18px; margin-bottom: 18px;
  animation: msgIn 200ms var(--ease-out) both;
}
.msg-compose .field { margin-bottom: 12px; }
.msg-compose label { display: block; font-size: 13px; font-weight: 600; color: var(--fg-secondary); margin-bottom: 6px; }
.msg-compose input[type="text"] {
  width: 100%; height: 42px; padding: 0 12px;
  background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 10px;
  outline: none; font-size: 14px; color: var(--fg);
  transition: border-color var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out);
}
.msg-compose textarea {
  width: 100%; padding: 12px; resize: vertical;
  background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 10px;
  outline: none; font-size: 14.5px; line-height: 1.6; color: var(--fg); font-family: inherit;
  transition: border-color var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out);
}
.msg-compose input:focus, .msg-compose textarea:focus,
.admin-panel .field input:focus, .admin-panel textarea:focus,
.admin-panel .field select:focus, .admin-search input:focus, .act-row input:focus, .act-row select:focus {
  border-color: var(--accent); box-shadow: 0 0 0 3.5px var(--accent-soft);
}
.msg-compose-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 4px; }
.msg-compose-actions .btn-ghost, .msg-compose-actions .btn-primary { height: 40px; padding: 0 18px; }

.msg-list { display: flex; flex-direction: column; gap: 10px; }
.msg-item {
  background: var(--bg-elevated);
  border: 1px solid var(--border); border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  padding: 15px 17px; cursor: pointer;
  transition: transform 160ms var(--ease-out), border-color var(--t-base) var(--ease-out);
  animation: msgIn 220ms var(--ease-out) both;
}
.msg-item:active { transform: scale(0.99); }
.msg-item.unread { border-color: var(--accent); }
.msg-item-top { display: flex; align-items: center; gap: 8px; }
.msg-kind {
  flex: none; font-size: 11px; font-weight: 700; letter-spacing: 0.02em;
  padding: 2px 7px; border-radius: 6px;
  background: var(--accent-soft); color: var(--accent);
}
.msg-kind.k-grant { background: linear-gradient(135deg, #d4a017, #f0c75e); color: #fff; }
.msg-kind.k-ticket { background: var(--fill); color: var(--fg-secondary); }
.msg-kind.k-out { background: var(--fill); color: var(--fg-secondary); }
.msg-title {
  flex: 1; min-width: 0; font-size: 14.5px; font-weight: 600;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.msg-dot { flex: none; width: 8px; height: 8px; border-radius: 50%; background: var(--danger); }
.msg-time { flex: none; font-size: 12px; color: var(--fg-tertiary); }
.msg-preview {
  margin-top: 6px; font-size: 13.5px; line-height: 1.55; color: var(--fg-secondary);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.msg-meta { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 10px; font-size: 12px; color: var(--fg-tertiary); }
.msg-meta .att-chip { display: inline-flex; align-items: center; gap: 3px; }
@keyframes msgIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.msg-modal { max-width: 560px; width: 100%; position: relative; text-align: left; }
.modal-close-x {
  position: absolute; top: 12px; right: 12px;
  width: 32px; height: 32px; border: none; border-radius: 50%;
  background: var(--fill); color: var(--fg-secondary);
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: transform 140ms var(--ease-out), background var(--t-base) var(--ease-out);
}
.modal-close-x svg { width: 16px; height: 16px; }
.modal-close-x:active { transform: scale(0.92); }
.msg-modal-meta { font-size: 12.5px; color: var(--fg-tertiary); margin-bottom: 12px; }
.msg-modal-body { font-size: 14.5px; line-height: 1.7; color: var(--fg); white-space: pre-wrap; word-break: break-word; }
.msg-modal-atts { display: flex; flex-direction: column; gap: 10px; margin-top: 16px; }
.msg-modal-atts:empty { margin-top: 0; }
.att-row {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  background: var(--fill); border: 1px solid var(--border); border-radius: 10px;
  font-size: 13px; color: var(--fg);
}
.att-thumb { width: 44px; height: 44px; flex: none; border-radius: 8px; object-fit: cover; background: var(--chip-bg); }
.att-row .att-main { flex: 1; min-width: 0; }
.att-row .att-sub { font-size: 12px; color: var(--fg-tertiary); }
.grant-card {
  display: flex; align-items: center; gap: 12px;
  padding: 14px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(212, 160, 23, 0.16), rgba(240, 199, 94, 0.10));
  border: 1px solid rgba(212, 160, 23, 0.35);
}
.grant-card.g-svip { background: linear-gradient(135deg, rgba(122, 92, 255, 0.16), rgba(183, 154, 255, 0.10)); border-color: rgba(122, 92, 255, 0.35); }
.grant-card .g-main { flex: 1; min-width: 0; }
.grant-card .g-name { font-size: 14.5px; font-weight: 700; }
.grant-card .g-sub { font-size: 12.5px; color: var(--fg-secondary); margin-top: 2px; }

.admin-tabs { margin-bottom: 18px; }
.admin-panel { animation: msgIn 200ms var(--ease-out) both; }
.admin-panel .field { margin-bottom: 0; }
.admin-panel .field label { display: block; font-size: 13px; font-weight: 600; color: var(--fg-secondary); margin-bottom: 6px; }
.admin-panel .field input[type="text"],
.admin-panel .field input[type="number"],
.admin-panel .field input[type="search"],
.admin-panel .field input[type="datetime-local"],
.admin-panel .field input[type="file"],
.admin-panel .field select {
  width: 100%; height: 42px; padding: 0 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border); border-radius: 10px;
  outline: none; font-size: 14px; color: var(--fg);
  transition: border-color var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out);
}
.admin-panel .field input[type="file"] { padding: 9px 10px; font-size: 13px; }
.admin-panel textarea {
  width: 100%; padding: 12px; margin-top: 14px; resize: vertical;
  background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 10px;
  outline: none; font-size: 14.5px; line-height: 1.6; color: var(--fg); font-family: inherit;
  transition: border-color var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out);
}
.admin-search { display: flex; gap: 10px; margin-bottom: 14px; }
.admin-search input {
  flex: 1; min-width: 0; height: 40px; padding: 0 12px;
  background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 10px;
  outline: none; font-size: 14px; color: var(--fg);
  transition: border-color var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out);
}
.admin-search .btn-ghost { height: 40px; padding: 0 16px; flex: none; }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.data-table { width: 100%; border-collapse: collapse; font-size: 13px; white-space: nowrap; }
.data-table th {
  text-align: left; font-size: 12px; font-weight: 600; color: var(--fg-secondary);
  padding: 8px 10px; border-bottom: 1px solid var(--border);
}
.data-table td { padding: 11px 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.data-table tr:last-child td { border-bottom: none; }
.data-table tbody tr.clickable { cursor: pointer; transition: background var(--t-fast) var(--ease-out); }
.data-table tbody tr.clickable:active { background: var(--fill); }
.data-table .u-name { font-weight: 600; }
.data-table .u-mail { font-size: 12px; color: var(--fg-tertiary); }
.status-pill { font-size: 11.5px; font-weight: 600; padding: 2px 8px; border-radius: 999px; }
.status-pill.s-active { background: rgba(52, 199, 89, 0.14); color: #1f9d47; }
.status-pill.s-disabled { background: rgba(255, 59, 48, 0.12); color: var(--danger); }
.status-pill.s-admin { background: var(--accent-soft); color: var(--accent); }
.status-pill.s-expired { background: var(--fill); color: var(--fg-tertiary); }
html[data-theme="dark"] .status-pill.s-active { color: var(--success); }

.back-btn { margin-bottom: 14px; height: 38px; padding: 0 16px; }
.detail-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(148px, 1fr)); gap: 12px; margin-bottom: 16px; }
.kv { background: var(--fill); border-radius: 10px; padding: 10px 12px; min-width: 0; }
.kv .k { font-size: 11.5px; color: var(--fg-tertiary); margin-bottom: 4px; }
.kv .v { font-size: 14px; font-weight: 600; word-break: break-all; }
.act-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 10px; }
.act-row input, .act-row select {
  height: 38px; padding: 0 10px;
  background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 9px;
  outline: none; font-size: 13px; color: var(--fg);
  transition: border-color var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out);
}
.mini-btn {
  height: 38px; padding: 0 15px; border: none; border-radius: 9px;
  background: var(--fill); color: var(--fg);
  font-size: 13px; font-weight: 600; cursor: pointer;
  transition: transform 150ms var(--ease-out), background var(--t-base) var(--ease-out);
}
.mini-btn:active { transform: scale(0.96); }
.mini-btn.primary { background: var(--accent); color: #fff; }
.mini-btn.danger { background: rgba(255, 59, 48, 0.10); color: var(--danger); }
.mini-btn:disabled { opacity: 0.5; cursor: default; }
.usage-bars { display: flex; flex-direction: column; gap: 7px; margin-top: 4px; }
.usage-row { display: flex; align-items: center; gap: 10px; font-size: 12.5px; }
.usage-row .d { width: 84px; flex: none; color: var(--fg-secondary); }
.usage-bar { flex: 1; height: 6px; border-radius: 3px; background: var(--fill); overflow: hidden; }
.usage-bar > i { display: block; height: 100%; border-radius: 3px; background: var(--accent); transition: width 240ms var(--ease-out); }
.usage-row .n { width: 58px; flex: none; text-align: right; color: var(--fg-secondary); }
.log-list { display: flex; flex-direction: column; gap: 8px; max-height: 440px; overflow-y: auto; }
.log-item { border-left: 2px solid var(--border); padding: 6px 0 6px 12px; font-size: 12.5px; }
.log-item .la { font-weight: 600; }
.log-item .ld { color: var(--fg-secondary); word-break: break-all; }
.log-item .lt { color: var(--fg-tertiary); font-size: 11.5px; margin-top: 2px; }

.toast {
  position: fixed; left: 50%; bottom: 28px; z-index: 90;
  max-width: min(88vw, 420px);
  padding: 11px 18px;
  border-radius: 999px;
  background: rgba(29, 29, 31, 0.92);
  color: #fff;
  font-size: 13.5px; font-weight: 500;
  text-align: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translate(-50%, 10px);
  pointer-events: none;
  transition: opacity 200ms var(--ease-out), transform 200ms var(--ease-out);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.bad { background: rgba(215, 38, 30, 0.95); }
html[data-theme="dark"] .toast { background: rgba(240, 240, 245, 0.94); color: #1d1d1f; }
html[data-theme="dark"] .toast.bad { background: rgba(255, 69, 58, 0.95); color: #fff; }

@media (hover: hover) and (pointer: fine) {
  .msg-item:hover { border-color: var(--fg-tertiary); }
  .data-table tbody tr.clickable:hover { background: var(--fill); }
  .mini-btn:hover { background: var(--border); }
  .mini-btn.primary:hover { background: var(--accent-strong); }
  .modal-close-x:hover { background: var(--border); }
}

/* ---- 响应式 ---- */
@media (max-width: 768px) {
  .features { grid-template-columns: 1fr; padding-bottom: 48px; }
  .hero { padding: 52px 0 30px; }
  .brand-sub { display: none; }
  .result-item .rate { margin-left: auto; }
  .result-item .nm { -webkit-line-clamp: 3; }
  .bubble { max-width: 88%; }
  .detail-card { padding: 22px; }
}

@media (max-width: 480px) {
  main { padding: 0 14px; }
  .subbar { flex-direction: column; align-items: stretch; }
  .search-box { padding-left: 14px; }
}

/* ---- 减少动态效果 ---- */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

@media (prefers-reduced-transparency: reduce) {
  .topbar { background: var(--bg); -webkit-backdrop-filter: none; backdrop-filter: none; }
}