:root {
  --blue: #2938a4;
  --blue-hover: #1e2a80;
  --link: #2440b3;
  --visited: #660099;
  --text: #333;
  --muted: #666;
  --border: #e3e3e3;
  --bg: #fff;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.home {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
}

.home-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-bottom: 18vh;
}

.logo {
  display: flex;
  align-items: center;
  gap: 4px;
  user-select: none;
  cursor: pointer;
}

.logo-mark {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #4e6ef2, #2938a4);
  color: #fff;
  font-size: 28px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(41, 56, 164, 0.28);
}

.logo-word {
  font-size: 52px;
  font-weight: 700;
  letter-spacing: 2px;
  color: #2938a4;
  line-height: 1;
}

.logo-word span:nth-child(1) { color: #2319dc; }
.logo-word span:nth-child(2) { color: #e10602; }
.logo-word span:nth-child(3) { color: #2319dc; }

.logo.small {
  gap: 6px;
}

.logo.small .logo-mark {
  width: 36px;
  height: 36px;
  font-size: 18px;
}

.logo.small .logo-word {
  font-size: 22px;
}

.search-box {
  margin-top: 28px;
  width: 652px;
  max-width: calc(100vw - 32px);
  position: relative;
}

.search-row {
  display: flex;
  height: 44px;
  border: 2px solid #c4c7ce;
  border-radius: 10px;
  overflow: hidden;
  background: #fff;
}

.search-row:focus-within {
  border-color: #4e6ef2;
  box-shadow: 0 0 0 1px rgba(78, 110, 242, 0.12);
}

.search-row input {
  flex: 1;
  border: 0;
  outline: 0;
  padding: 0 16px;
  font-size: 16px;
  color: #222;
  background: transparent;
}

.search-row button {
  width: 118px;
  border: 0;
  background: #4e6ef2;
  color: #fff;
  font-size: 17px;
  cursor: pointer;
}

.search-row button:hover {
  background: #4662d9;
}

.suggest {
  position: absolute;
  left: 0;
  right: 0;
  top: 46px;
  background: #fff;
  border: 1px solid #eee;
  border-radius: 8px;
  box-shadow: var(--shadow);
  z-index: 20;
  overflow: hidden;
}

.suggest li {
  list-style: none;
  margin: 0;
  padding: 10px 16px;
  cursor: pointer;
  font-size: 14px;
}

.suggest ul {
  margin: 0;
  padding: 6px 0;
}

.suggest li:hover,
.suggest li.active {
  background: #f5f5f6;
}

.hot-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 10px;
}

.results-page {
  min-height: 100vh;
  background: #fff;
  position: relative;
}

.account-bar {
  position: fixed;
  top: 14px;
  right: 20px;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
}

.account-name {
  color: #333;
}

.account-link {
  color: #315efb;
}

.account-btn {
  border: 1px solid #d7d9e0;
  background: #fff;
  color: #333;
  border-radius: 16px;
  padding: 5px 14px;
  cursor: pointer;
  font-size: 13px;
}

.account-btn:hover {
  border-color: #4e6ef2;
  color: #4e6ef2;
}

.account-btn.ghost {
  border: 0;
  background: transparent;
  color: #666;
  padding: 5px 0;
}

.login-mask {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
}

.login-dialog {
  width: 360px;
  max-width: calc(100vw - 32px);
  background: #fff;
  border-radius: 12px;
  padding: 22px 22px 18px;
  box-shadow: var(--shadow);
}

.login-dialog h3 {
  margin: 0 0 14px;
  font-size: 18px;
}

.login-dialog form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.login-dialog label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: #555;
}

.login-dialog input {
  border: 1px solid #d7d9e0;
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 14px;
}

.login-dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 4px;
}

.login-dialog-actions button {
  border: 0;
  background: #4e6ef2;
  color: #fff;
  border-radius: 8px;
  padding: 8px 14px;
  cursor: pointer;
}

.login-dialog-actions .ghost {
  background: #eef1fb;
  color: #315efb;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: #fff;
  border-bottom: 1px solid #f0f0f0;
  padding: 12px 24px 10px;
}

.topbar-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  max-width: 1120px;
}

.topbar .search-box {
  margin: 0;
  width: 640px;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 32px;
  max-width: 1120px;
  padding: 18px 24px 48px 184px;
}

.meta {
  color: #9195a3;
  font-size: 13px;
  margin-bottom: 16px;
}

.result {
  margin-bottom: 22px;
}

.result h3 {
  margin: 0 0 4px;
  font-size: 18px;
  font-weight: 400;
  line-height: 1.4;
}

.result h3 a {
  color: #2440b3;
}

.result h3 .plain-title {
  color: #222;
}

.result .url {
  color: #008000;
  font-size: 13px;
  margin-bottom: 4px;
  word-break: break-all;
}

.result .snippet {
  color: #555;
  font-size: 13px;
  line-height: 1.6;
}

.em {
  color: #c00;
  font-style: normal;
}

.pager {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.pager button {
  min-width: 36px;
  height: 36px;
  border: 1px solid #d7d9e0;
  background: #fff;
  border-radius: 6px;
  cursor: pointer;
}

.pager button.active,
.pager button:hover {
  border-color: #4e6ef2;
  color: #4e6ef2;
}

.side-card, .knowledge {
  border: 1px solid #f0f0f0;
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 16px;
}

.knowledge h2 {
  margin: 0 0 8px;
  font-size: 20px;
}

.knowledge p {
  margin: 0;
  color: #555;
  font-size: 13px;
  line-height: 1.7;
}

.knowledge .source {
  margin-top: 10px;
  font-size: 12px;
  color: #9195a3;
}

.related {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.related span {
  background: #f5f5f6;
  border-radius: 16px;
  padding: 6px 12px;
  font-size: 13px;
  cursor: pointer;
}

.related span:hover {
  background: #ececf1;
}

.empty {
  padding: 40px 0;
  color: #666;
}

.empty b {
  color: #c00;
}

.admin-page {
  min-height: 100vh;
  background: #f7f8fb;
}

.admin-top {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 24px;
  background: #fff;
  border-bottom: 1px solid #eef0f5;
}

.admin-brand {
  font-weight: 700;
  color: #2319dc;
  font-size: 18px;
}

.admin-top h1 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  flex: 1;
}

.admin-user {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: #666;
}

.admin-user .ghost {
  border: 0;
  background: #eef1fb;
  color: #315efb;
  border-radius: 8px;
  padding: 6px 12px;
  cursor: pointer;
}

.login-wrap {
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
}

.login-card {
  width: 360px;
  max-width: 100%;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.login-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: #555;
}

.login-form input {
  border: 1px solid #d7d9e0;
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 14px;
}

.login-form button {
  border: 0;
  background: #4e6ef2;
  color: #fff;
  border-radius: 8px;
  padding: 10px 14px;
  cursor: pointer;
  margin-top: 4px;
}

.admin-main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 16px 48px;
}

.admin-card {
  background: #fff;
  border: 1px solid #eef0f5;
  border-radius: 12px;
  padding: 18px;
  margin-bottom: 16px;
}

.admin-card h2 {
  margin: 0 0 14px;
  font-size: 16px;
}

.admin-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 16px;
}

.admin-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: #555;
}

.admin-form .full {
  grid-column: 1 / -1;
}

.admin-form input,
.admin-form textarea {
  border: 1px solid #d7d9e0;
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 14px;
  font-family: inherit;
}

.admin-form select {
  border: 1px solid #d7d9e0;
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 14px;
  font-family: inherit;
  background: #fff;
}

.admin-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.admin-tabs button {
  border: 1px solid #e2e5ee;
  background: #fff;
  color: #555;
  border-radius: 8px;
  padding: 8px 18px;
  cursor: pointer;
  font-size: 14px;
}

.admin-tabs button.active {
  border-color: #4e6ef2;
  color: #315efb;
  background: #eef1fb;
  font-weight: 600;
}

.admin-actions {
  grid-column: 1 / -1;
  display: flex;
  gap: 8px;
}

.admin-actions button,
.admin-toolbar button,
.admin-table button {
  border: 0;
  background: #4e6ef2;
  color: #fff;
  border-radius: 8px;
  padding: 8px 14px;
  cursor: pointer;
}

.admin-actions .ghost,
.admin-table button {
  background: #eef1fb;
  color: #315efb;
}

.admin-table .danger {
  background: #fdecec;
  color: #d92b2b;
}

.admin-io {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding-bottom: 12px;
  margin-bottom: 12px;
  border-bottom: 1px dashed #e8eaf0;
}

.io-btn {
  border: 0;
  background: #4e6ef2;
  color: #fff;
  border-radius: 8px;
  padding: 8px 14px;
  cursor: pointer;
  font-size: 13px;
}

.io-btn:hover {
  background: #4662d9;
  text-decoration: none;
}

.io-import {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.io-import select,
.io-import input[type="file"] {
  border: 1px solid #d7d9e0;
  border-radius: 8px;
  padding: 6px 8px;
  font-size: 13px;
  background: #fff;
}

.io-import button {
  border: 0;
  background: #eef1fb;
  color: #315efb;
  border-radius: 8px;
  padding: 8px 14px;
  cursor: pointer;
  font-size: 13px;
}

.admin-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.admin-toolbar form {
  display: flex;
  gap: 8px;
  flex: 1;
}

.admin-toolbar input {
  flex: 1;
  border: 1px solid #d7d9e0;
  border-radius: 8px;
  padding: 8px 10px;
}

.admin-count {
  color: #9195a3;
  font-size: 13px;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.admin-table th,
.admin-table td {
  border-bottom: 1px solid #f0f0f0;
  text-align: left;
  padding: 10px 8px;
  vertical-align: top;
}

.admin-table .url-cell {
  max-width: 260px;
  word-break: break-all;
}

.admin-table .empty-cell {
  text-align: center;
  color: #9195a3;
  padding: 24px 8px;
}

.page-info {
  align-self: center;
  color: #666;
  font-size: 13px;
}

.admin-msg {
  margin-bottom: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 13px;
}

.admin-msg.ok {
  background: #e9f8ee;
  color: #1e8e3e;
}

.admin-msg.err {
  background: #fdecec;
  color: #d92b2b;
}

@media (max-width: 980px) {
  .home-main { padding-bottom: 10vh; }
  .layout { padding-left: 16px; padding-right: 16px; }
  .layout { grid-template-columns: 1fr; }
  .topbar-inner { flex-wrap: wrap; }
  .topbar .search-box { width: 100%; }
  .admin-form { grid-template-columns: 1fr; }
}