:root {
  --portal-bg: #f3f7fb;
  --portal-surface: #ffffff;
  --portal-surface-soft: #f7fbff;
  --portal-border: #d7e3f1;
  --portal-text: #142235;
  --portal-muted: #5b6b88;
  --portal-primary: #1f6feb;
  --portal-primary-dark: #194fb6;
  --portal-primary-soft: rgba(31, 111, 235, 0.12);
  --portal-success: #0f766e;
  --portal-success-soft: #dff7f1;
  --portal-warning: #8a5a00;
  --portal-warning-soft: #fff7e6;
  --portal-shadow: 0 18px 42px rgba(20, 34, 53, 0.08);
  --portal-radius-xl: 24px;
  --portal-radius-lg: 18px;
  --portal-radius-md: 14px;
}

* {
  box-sizing: border-box;
}

body {
  color: var(--portal-text);
}

a {
  color: var(--portal-primary);
}

a:hover {
  color: var(--portal-primary-dark);
}

.portal-panel {
  background: var(--portal-surface);
  border: 1px solid var(--portal-border);
  border-radius: var(--portal-radius-xl);
  box-shadow: var(--portal-shadow);
}

.portal-eyebrow {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--portal-success-soft);
  color: var(--portal-success);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.portal-muted {
  color: var(--portal-muted);
}

.portal-button,
.portal-button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: var(--portal-radius-md);
  text-decoration: none;
  font-weight: 700;
  border: none;
  cursor: pointer;
}

.portal-button {
  background: var(--portal-primary);
  color: #fff;
}

.portal-button:hover {
  background: var(--portal-primary-dark);
  color: #fff;
}

.portal-button-secondary {
  background: #edf3ff;
  color: var(--portal-primary-dark);
}

.portal-button-secondary:hover {
  background: #dfeaff;
  color: var(--portal-primary-dark);
}

.portal-field input,
.portal-field textarea,
.portal-field select {
  width: 100%;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid #cfd7e6;
  font-size: 14px;
  background: #fff;
  color: var(--portal-text);
}

.portal-field input:focus,
.portal-field textarea:focus,
.portal-field select:focus {
  outline: none;
  border-color: var(--portal-primary);
  box-shadow: 0 0 0 4px var(--portal-primary-soft);
}

.portal-helper {
  color: var(--portal-muted);
  font-size: 12px;
  line-height: 1.6;
}

.portal-notice {
  padding: 16px 18px;
  border-radius: 16px;
  background: var(--portal-warning-soft);
  border: 1px solid #f4d39b;
  color: var(--portal-warning);
  line-height: 1.7;
}

.portal-status-grid {
  display: grid;
  gap: 12px;
}

.portal-status-item {
  padding: 14px 16px;
  border-radius: 16px;
  background: var(--portal-surface-soft);
  border: 1px solid var(--portal-border);
}

.global-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(14,26,43,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.08);
  padding: 12px 20px;
}

.global-nav-inner {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.global-nav-brand {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
}

.global-nav-links {
  display: flex;
  gap: 20px;
  align-items: center;
}

.global-nav-link {
  color: #d8e4f8;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
}

.global-nav-link:hover {
  color: #fff;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--portal-primary);
  outline-offset: 2px;
}

@media (max-width: 768px) {
  .global-nav {
    padding: 10px 14px;
  }
  .global-nav-brand {
    font-size: 16px;
  }
  .global-nav-links {
    gap: 12px;
  }
  .global-nav-link {
    font-size: 13px;
  }
}

/* ============================================================
   通用状态组件库（2026-06-26 第一阶段 P1-2）
   覆盖：loading / skeleton / empty / error / toast / spinner
   所有用户端页面可直接 <div class="state-..."> 引用。
   ============================================================ */

/* —— Loading 容器 —— */
.state-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 36px 18px;
  text-align: center;
  color: #5b6b88;
  background: #f8fbff;
  border: 1px solid #d7e3f1;
  border-radius: 16px;
}
.state-loading__spinner {
  width: 28px;
  height: 28px;
  border: 3px solid #dbe7f5;
  border-top-color: #1f6feb;
  border-radius: 50%;
  animation: state-spin 0.9s linear infinite;
}
.state-loading__text {
  font-size: 14px;
  line-height: 1.6;
  margin: 0;
}
@keyframes state-spin {
  to { transform: rotate(360deg); }
}
@media (prefers-reduced-motion: reduce) {
  .state-loading__spinner {
    animation-duration: 2.5s;
  }
}

/* —— Skeleton 占位（首屏数据未到时用）—— */
.state-skeleton {
  display: block;
  padding: 18px;
  background: #f4f7fb;
  border: 1px solid #e1e8f3;
  border-radius: 14px;
}
.state-skeleton__line {
  display: block;
  height: 14px;
  margin: 10px 0;
  border-radius: 7px;
  background: linear-gradient(90deg, #e6ecf5 0%, #f3f6fb 50%, #e6ecf5 100%);
  background-size: 200% 100%;
  animation: state-shimmer 1.4s ease-in-out infinite;
}
.state-skeleton__line--short { width: 38%; }
.state-skeleton__line--mid   { width: 64%; }
.state-skeleton__line--long  { width: 90%; }
@keyframes state-shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
@media (prefers-reduced-motion: reduce) {
  .state-skeleton__line {
    animation: none;
    background: #e6ecf5;
  }
}

/* —— Empty 空状态 —— */
.state-empty {
  padding: 28px 20px;
  border-radius: 16px;
  background: #f8fbff;
  border: 1px solid #d7e3f1;
  color: #5b6b88;
  text-align: center;
}
.state-empty__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: #2c3e5b;
}
.state-empty__hint {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
}

/* —— Error 错误状态 —— */
.state-error {
  padding: 20px 18px;
  border-radius: 14px;
  background: #fff5f5;
  border: 1px solid #f5c2c7;
  color: #b42318;
}
.state-error__title {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
}
.state-error__hint {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: #8a1f15;
}
.state-error a {
  color: #b42318;
  text-decoration: underline;
}

/* —— Toast（全局，aria-live=polite）—— */
.state-toast-stack {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 9999;
  pointer-events: none;
}
.state-toast {
  pointer-events: auto;
  min-width: 220px;
  max-width: 90vw;
  padding: 10px 14px;
  border-radius: 10px;
  background: rgba(20, 34, 53, .92);
  color: #fff;
  font-size: 13px;
  line-height: 1.5;
  box-shadow: 0 12px 30px rgba(20, 34, 53, .18);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .2s ease, transform .2s ease;
}
.state-toast--visible {
  opacity: 1;
  transform: translateY(0);
}
.state-toast--success { background: #1f7a4d; }
.state-toast--error   { background: #b42318; }
.state-toast--info    { background: #1f6feb; }

/* —— 工具类：sr-only（可访问性配套）—— */
.state-sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}