/* =====================================================================
   设计系统基础层
   变量 → 基础重置 → 排版 → 通用组件
   响应式断点：1440 / 1200 / 980 / 720 / 480
   ===================================================================== */

:root {
  /* 品牌色 */
  --c-primary: #2f6bff;
  --c-primary-dark: #1f4fd0;
  --c-primary-light: #5b8cff;
  --c-accent: #00c2a8;
  --c-accent-2: #7c5cff;
  --c-warm: #ff8a3d;

  /* 中性色 */
  --c-bg: #f6f8fc;
  --c-surface: #ffffff;
  --c-surface-2: #f0f3f9;
  --c-border: #e3e8f0;
  --c-text: #0f1729;
  --c-text-2: #4a5568;
  --c-text-3: #8592a6;
  --c-dark: #0b1120;
  --c-dark-2: #141c30;

  /* 语义色 */
  --c-ok: #12b76a;
  --c-warn: #f79009;
  --c-error: #f04438;
  --c-info: #2f6bff;

  /* 渐变 */
  --g-brand: linear-gradient(135deg, #2f6bff 0%, #7c5cff 55%, #00c2a8 100%);
  --g-dark: linear-gradient(150deg, #0b1120 0%, #16203a 60%, #1d2b4d 100%);
  --g-text: linear-gradient(92deg, #ffffff 10%, #b9cbff 55%, #7ef0dd 100%);

  /* 圆角 */
  --r-xs: 6px;
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;
  --r-full: 999px;

  /* 阴影 */
  --sh-sm: 0 1px 2px rgba(15, 23, 41, .06), 0 2px 6px rgba(15, 23, 41, .04);
  --sh-md: 0 4px 12px rgba(15, 23, 41, .08), 0 12px 28px rgba(15, 23, 41, .06);
  --sh-lg: 0 12px 32px rgba(15, 23, 41, .12), 0 32px 64px rgba(15, 23, 41, .08);
  --sh-brand: 0 8px 24px rgba(47, 107, 255, .28);

  /* 间距 */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;
  --sp-7: 48px;
  --sp-8: 64px;
  --sp-9: 96px;

  /* 布局 */
  --container: 1200px;
  --container-wide: 1360px;
  --nav-h: 68px;

  /* 动效（可被后台配置覆盖） */
  --ease: cubic-bezier(.22, .61, .36, 1);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --dur-fast: 180ms;
  --dur: 320ms;
  --dur-slow: 560ms;

  --z-nav: 100;
  --z-drop: 200;
  --z-modal: 300;
  --z-toast: 400;
  --z-cursor: 500;
}

/* ------------------------------ 重置 ------------------------------ */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
}

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
}

h1, h2, h3, h4, h5, p, figure, ul, ol, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; padding: 0; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }
:focus-visible { outline: 2px solid var(--c-primary); outline-offset: 3px; border-radius: 4px; }

/* ------------------------------ 排版 ------------------------------ */
.h-display { font-size: clamp(2.2rem, 5.4vw, 4rem); line-height: 1.14; letter-spacing: -.02em; font-weight: 800; }
.h1 { font-size: clamp(1.9rem, 3.8vw, 3rem); line-height: 1.2; letter-spacing: -.015em; font-weight: 750; }
.h2 { font-size: clamp(1.5rem, 2.6vw, 2.15rem); line-height: 1.28; letter-spacing: -.01em; font-weight: 700; }
.h3 { font-size: clamp(1.15rem, 1.8vw, 1.45rem); line-height: 1.38; font-weight: 680; }
.h4 { font-size: 1.05rem; line-height: 1.45; font-weight: 650; }
.lead { font-size: clamp(1rem, 1.35vw, 1.15rem); color: var(--c-text-2); line-height: 1.8; }
.body { color: var(--c-text-2); }
.small { font-size: .875rem; }
.tiny { font-size: .78rem; }
.muted { color: var(--c-text-3); }
.strong { font-weight: 700; }
.mono { font-family: "SF Mono", "Cascadia Code", Consolas, "Courier New", monospace; font-variant-numeric: tabular-nums; }
.nowrap { white-space: nowrap; }
.center { text-align: center; }
.grad-text {
  background: var(--g-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.clamp-2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.clamp-3 { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

/* ------------------------------ 布局 ------------------------------ */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--sp-5); }
.container-wide { width: 100%; max-width: var(--container-wide); margin: 0 auto; padding: 0 var(--sp-5); }
.section { padding: clamp(48px, 7vw, 96px) 0; position: relative; }
.section-tight { padding: clamp(36px, 5vw, 64px) 0; }
.grid { display: grid; gap: var(--sp-5); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.flex-wrap { flex-wrap: wrap; }
.gap-2 { gap: var(--sp-2); } .gap-3 { gap: var(--sp-3); }
.gap-4 { gap: var(--sp-4); } .gap-5 { gap: var(--sp-5); }
.gap-6 { gap: var(--sp-6); }
.mt-3 { margin-top: var(--sp-3); } .mt-4 { margin-top: var(--sp-4); }
.mt-5 { margin-top: var(--sp-5); } .mt-6 { margin-top: var(--sp-6); }
.mb-3 { margin-bottom: var(--sp-3); } .mb-4 { margin-bottom: var(--sp-4); }
.mb-5 { margin-bottom: var(--sp-5); } .mb-6 { margin-bottom: var(--sp-6); }

/* ------------------------------ 徽标 ------------------------------ */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; border-radius: var(--r-full);
  font-size: .78rem; font-weight: 600; line-height: 1.6;
  background: var(--c-surface-2); color: var(--c-text-2);
  border: 1px solid var(--c-border);
}
.badge-primary { background: rgba(47,107,255,.1); color: var(--c-primary); border-color: rgba(47,107,255,.22); }
.badge-accent { background: rgba(0,194,168,.12); color: #00806f; border-color: rgba(0,194,168,.25); }
.badge-warn { background: rgba(247,144,9,.12); color: #b25e00; border-color: rgba(247,144,9,.25); }
.badge-error { background: rgba(240,68,56,.1); color: var(--c-error); border-color: rgba(240,68,56,.22); }
.badge-ok { background: rgba(18,183,106,.12); color: #087443; border-color: rgba(18,183,106,.25); }
.badge-dot::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

/* ------------------------------ 按钮 ------------------------------ */
.btn {
  --btn-bg: var(--c-primary);
  --btn-fg: #fff;
  position: relative; overflow: hidden;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 24px; border-radius: var(--r-sm);
  font-size: .95rem; font-weight: 600; line-height: 1.4;
  background: var(--btn-bg); color: var(--btn-fg);
  border: 1px solid transparent;
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease),
              background-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
  will-change: transform;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--sh-brand); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: .55; cursor: not-allowed; transform: none; box-shadow: none; }
.btn-primary { --btn-bg: var(--c-primary); }
.btn-gradient { --btn-bg: var(--g-brand); background: var(--g-brand); }
.btn-ghost { --btn-bg: transparent; --btn-fg: var(--c-text); border-color: var(--c-border); background: var(--c-surface); }
.btn-ghost:hover { --btn-fg: var(--c-primary); border-color: var(--c-primary); box-shadow: var(--sh-sm); }
.btn-outline { --btn-bg: transparent; --btn-fg: var(--c-primary); border-color: rgba(47,107,255,.4); }
.btn-outline:hover { background: rgba(47,107,255,.08); box-shadow: none; }
.btn-light { --btn-bg: rgba(255,255,255,.12); --btn-fg: #fff; border-color: rgba(255,255,255,.28); backdrop-filter: blur(8px); }
.btn-light:hover { --btn-bg: rgba(255,255,255,.2); box-shadow: none; }
.btn-sm { padding: 8px 16px; font-size: .875rem; }
.btn-lg { padding: 15px 32px; font-size: 1.02rem; border-radius: var(--r-md); }
.btn-block { display: flex; width: 100%; }
.btn-icon { padding: 10px; width: 40px; height: 40px; }

/* 涟漪反馈 */
.ripple-ink {
  position: absolute; border-radius: 50%; transform: scale(0);
  background: rgba(255,255,255,.45); pointer-events: none;
  animation: rippleOut 560ms var(--ease-out) forwards;
}
.btn-ghost .ripple-ink, .btn-outline .ripple-ink { background: rgba(47,107,255,.22); }
@keyframes rippleOut { to { transform: scale(2.6); opacity: 0; } }

/* ------------------------------ 卡片 ------------------------------ */
.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: var(--sp-5);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.card-hover:hover { transform: translateY(-4px); box-shadow: var(--sh-md); border-color: rgba(47,107,255,.3); }
.card-pad-lg { padding: var(--sp-6); }
.card-glass {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.14);
  backdrop-filter: blur(14px);
}

/* ------------------------------ 表单 ------------------------------ */
.field { display: flex; flex-direction: column; gap: 6px; }
.label { font-size: .875rem; font-weight: 600; color: var(--c-text); }
.label .req { color: var(--c-error); margin-left: 2px; }
.input, .select, .textarea {
  width: 100%; padding: 11px 14px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-sm);
  font-size: .95rem;
  transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.input:focus, .select:focus, .textarea:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(47,107,255,.14);
}
.input::placeholder, .textarea::placeholder { color: var(--c-text-3); }
.textarea { min-height: 120px; resize: vertical; line-height: 1.7; }
.select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%238592a6' d='M1 1l5 5 5-5'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 36px; }
.field-error .input, .field-error .select, .field-error .textarea { border-color: var(--c-error); }
.err-msg { font-size: .8rem; color: var(--c-error); min-height: 1em; }
.hint { font-size: .8rem; color: var(--c-text-3); }

.checkbox, .radio { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; font-size: .92rem; }
.checkbox input, .radio input { width: 16px; height: 16px; accent-color: var(--c-primary); cursor: pointer; }

/* ------------------------------ 表格 ------------------------------ */
.table-wrap { overflow-x: auto; border: 1px solid var(--c-border); border-radius: var(--r-md); background: var(--c-surface); }
.table { width: 100%; font-size: .9rem; }
.table th, .table td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--c-border); vertical-align: middle; }
.table th { background: var(--c-surface-2); font-weight: 650; color: var(--c-text-2); font-size: .82rem; white-space: nowrap; }
.table tbody tr { transition: background var(--dur-fast) var(--ease); }
.table tbody tr:hover { background: rgba(47,107,255,.035); }
.table tbody tr:last-child td { border-bottom: none; }

/* ------------------------------ 其他 ------------------------------ */
.divider { height: 1px; background: var(--c-border); border: 0; margin: var(--sp-5) 0; }
.empty { padding: var(--sp-8) var(--sp-5); text-align: center; color: var(--c-text-3); }
.empty-icon { font-size: 2.4rem; opacity: .4; margin-bottom: var(--sp-3); }

/* ---------------------------- 统一状态块 ----------------------------
   加载中 / 空数据 / 请求失败 / 无权限 / 网络异常
   前台、会员中心、后台共用，保证文案与视觉一致 */
.state-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: var(--sp-8) var(--sp-5);
  text-align: center;
  color: var(--c-text-3);
}
.state-glyph { font-size: 2.2rem; opacity: .45; line-height: 1; margin-bottom: var(--sp-2); }
.state-title { font-size: .96rem; font-weight: 600; color: var(--c-text-2); margin: 0; }
.state-desc { font-size: .86rem; color: var(--c-text-3); margin: 0; max-width: 32em; line-height: 1.7; }
.state-action { margin-top: var(--sp-3); }
.state-block.is-error .state-title { color: var(--c-error); }
.state-block.is-offline .state-title { color: var(--c-warn); }
.state-block.is-forbidden .state-title { color: var(--c-text-2); }

.state-spinner {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 2px solid var(--c-border);
  border-top-color: var(--c-primary);
  animation: state-spin .8s linear infinite;
  margin-bottom: var(--sp-2);
}
@keyframes state-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  .state-spinner { animation-duration: 2.4s; }
}

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--c-border); overflow-x: auto; }
.tab {
  padding: 11px 18px; font-size: .92rem; font-weight: 600; color: var(--c-text-2);
  border-bottom: 2px solid transparent; white-space: nowrap;
  transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.tab:hover { color: var(--c-text); }
.tab.active { color: var(--c-primary); border-bottom-color: var(--c-primary); }
.pill-group { display: inline-flex; gap: 6px; flex-wrap: wrap; }
.pill {
  padding: 6px 14px; border-radius: var(--r-full); font-size: .85rem; font-weight: 550;
  background: var(--c-surface-2); color: var(--c-text-2); border: 1px solid transparent;
  transition: all var(--dur-fast) var(--ease);
}
.pill:hover { background: rgba(47,107,255,.1); color: var(--c-primary); }
.pill.active { background: var(--c-primary); color: #fff; }
.progress { height: 6px; background: var(--c-surface-2); border-radius: var(--r-full); overflow: hidden; }
.progress-bar { height: 100%; background: var(--g-brand); border-radius: var(--r-full); transition: width var(--dur-slow) var(--ease-out); }
.toast-host { position: fixed; top: 84px; right: 20px; z-index: var(--z-toast); display: flex; flex-direction: column; gap: 10px; pointer-events: none; }
.toast {
  min-width: 240px; max-width: 380px; padding: 13px 16px;
  background: var(--c-surface); border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-primary);
  border-radius: var(--r-sm); box-shadow: var(--sh-md);
  font-size: .9rem; pointer-events: auto;
  animation: toastIn 320ms var(--ease-out);
}
.toast.ok { border-left-color: var(--c-ok); }
.toast.err { border-left-color: var(--c-error); }
.toast.warn { border-left-color: var(--c-warn); }
@keyframes toastIn { from { opacity: 0; transform: translateX(24px); } }
.toast.out { animation: toastOut 260ms var(--ease) forwards; }
@keyframes toastOut { to { opacity: 0; transform: translateX(24px); } }
.skeleton {
  background: linear-gradient(90deg, var(--c-surface-2) 25%, #e9eef6 50%, var(--c-surface-2) 75%);
  background-size: 200% 100%; animation: shimmer 1.4s infinite; border-radius: var(--r-sm);
}
@keyframes shimmer { to { background-position: -200% 0; } }

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--c-surface-2); }
::-webkit-scrollbar-thumb { background: #c8d2e2; border-radius: 6px; border: 2px solid var(--c-surface-2); }
::-webkit-scrollbar-thumb:hover { background: #a9b6cc; }

/* ------------------------------ 响应式 ------------------------------ */
@media (max-width: 1200px) {
  .grid-4 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 980px) {
  :root { --nav-h: 60px; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .container, .container-wide { padding: 0 var(--sp-4); }
}
@media (max-width: 720px) {
  body { font-size: 15px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: minmax(0, 1fr); }
  .section { padding: 44px 0; }
  .card { padding: var(--sp-4); border-radius: var(--r-md); }
  .toast-host { top: auto; bottom: 20px; left: 16px; right: 16px; }
  .toast { min-width: 0; max-width: none; }
}
@media (max-width: 480px) {
  .container, .container-wide { padding: 0 16px; }
  .btn { padding: 11px 18px; }
  /* 图标按钮必须还原 padding：上面的 .btn 规则会把内容区压到 4px，
     内联 SVG 随之被 flex 压成 2px 竖线（后台汉堡菜单曾因此渲染成一根竖线） */
  .btn-icon { padding: 10px; }
  /* 图标本身不参与收缩 */
  .btn svg { flex-shrink: 0; }
  .h-display { font-size: 2rem; }
}

/* 打印 */
@media print {
  .nav, .footer, .announce, .btn { display: none !important; }
  body { background: #fff; }
}