*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html,
body {
  width: 100vw;
  height: 100vh;
  display: flex;
  overflow: hidden;
  user-select: none;
  background-color: var(--color-bg, #0d0d0d);
  color: var(--color, #fff);
  overscroll-behavior-y: none;
  font-family: var(
    --font-family,
    "PingFang SC",
    "Microsoft YaHei",
    "Helvetica Neue",
    Helvetica,
    Arial,
    sans-serif
  );
  transition:
    background-color 0.3s,
    color 0.3s;
}
body {
  width: 100%;
  height: auto;
  min-height: 100vh;
  overflow-y: auto;
  padding: 0;
  margin: 0;
}
* {
  border-color: var(--color-border, #2b2b2b);
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb, #4a4a50)
    var(--scrollbar-track, transparent);
}
::-webkit-scrollbar {
  width: var(--scrollbar-size, 6px);
  height: var(--scrollbar-size, 6px);
  background-color: transparent;
}
::-webkit-scrollbar-thumb {
  background-color: var(--scrollbar-thumb, #4a4a50);
  border-radius: var(--scrollbar-radius, 0);
  background-clip: padding-box;
  border: 2px solid transparent;
  min-height: 36px;
}
::-webkit-scrollbar-thumb:hover {
  background-color: var(--scrollbar-thumb-hover, #696973);
}
::-webkit-scrollbar-track {
  background-color: transparent;
}
a {
  color: var(--color-primary, #315afd);
  text-decoration: none;
}
a:hover {
  color: var(--color-secondary, #999);
}

/* === Header === */
.seo-sticky-header {
  position: fixed;
  top: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 50px;
  padding: 0 12px;
  background: var(--color-bg, #0d0d0d);
  border-bottom: var(--border-width, 1px) solid var(--color-border, #2b2b2b);
  left: 0;
  right: 0;
}
.seo-sticky-header .header-left {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}
.seo-sticky-header .logo {
  width: 26px;
  height: 26px;
  border-radius: 0;
  border: var(--border-width, 1px) solid var(--color-border, #2b2b2b);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
  background: color-mix(
    in srgb,
    var(--color-primary, #315afd) 40%,
    transparent
  );
  border-color: color-mix(
    in srgb,
    var(--color-primary, #315afd) 50%,
    transparent
  );
}
.seo-sticky-header .logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.seo-sticky-header .brand {
  font-weight: 600;
  font-size: 14px;
  white-space: nowrap;
}
.seo-sticky-header .slogan {
  color: var(--color-secondary, #999);
  font-size: 11px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.seo-sticky-header .header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.seo-sticky-header .header-actions a {
  font-size: 12px;
  padding: 5px 12px;
  border-radius: 0;
  transition: all 0.15s;
  white-space: nowrap;
}
.seo-sticky-header .header-actions .hdr-original {
  color: var(--color, #fff);
  border: var(--border-width, 1px) solid var(--color-border, #2b2b2b);
}
.seo-sticky-header .header-actions .hdr-original:hover {
  background: var(--color-hover, #2b2b2e);
}
.seo-sticky-header .header-actions .hdr-app {
  background: var(--color-primary, #315afd);
  color: var(--color-active, #fff);
}
.seo-sticky-header .header-actions .hdr-app:hover {
  opacity: 0.85;
}
.seo-sticky-header .logo {
  width: 26px;
  height: 26px;
  border-radius: 0;
  border: var(--border-width, 1px) solid var(--color-border, #2b2b2b);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 12px;
  flex-shrink: 0;
  overflow: hidden;
  background: color-mix(
    in srgb,
    var(--color-primary, #315afd) 40%,
    transparent
  );
  border-color: color-mix(
    in srgb,
    var(--color-primary, #315afd) 50%,
    transparent
  );
}

.logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.seo-sticky-header .brand {
  font-weight: 600;
  font-size: 14px;
  white-space: nowrap;
}
.seo-sticky-header .slogan {
  color: var(--color-secondary, #999);
  font-size: 11px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* === Body Layout === */
.seo-body {
  display: flex;
  width: 100%;
}

/* === Sidebar === */
.seo-sidebar {
  width: 50px;
  flex-shrink: 0;
  border-right: var(--border-width, 1px) solid var(--color-border, #2b2b2b);
  padding: var(--padding, 10px) 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  background: var(--color-bg, #0d0d0d);
  padding-top: 50px;
}
.seo-sidebar a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 0;
  font-size: 11px;
  color: var(--color-secondary, #999);
  transition: all 0.15s;
}
.seo-sidebar a:hover {
  background: var(--color-hover, #2b2b2e);
  color: var(--color, #fff);
}
.seo-sidebar a.current {
  background: var(--color-primary, #315afd);
  color: var(--color-active, #fff);
}
.seo-sidebar .sep {
  width: 20px;
  height: var(--border-width, 1px);
  background: var(--color-border, #2b2b2b);
  margin: 6px 0;
}

/* === Feeds List (random) === */
.seo-feeds-list {
  width: 180px;
  flex-shrink: 0;
  border-right: var(--border-width, 1px) solid var(--color-border, #2b2b2b);
  padding: var(--padding-small, 6px) var(--padding, 10px);
  overflow-y: auto;
  padding-top: 50px;
}
.seo-feeds-list h2 {
  font-size: 10px;
  color: var(--color-secondary, #999);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--padding-small, 6px);
  font-weight: 600;
  padding: var(--padding, 10px) 0;
  display: none;
}
.seo-feed-card {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 0;
  margin-bottom: 2px;
  transition: all 0.15s;
}
.seo-feed-card:hover {
  background: var(--color-hover, #2b2b2e);
}
.seo-feed-card .favi {
  width: 20px;
  height: 20px;
  border-radius: 0;
  border: var(--border-width, 1px) solid var(--color-border, #2b2b2b);
  flex-shrink: 0;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  color: var(--color-secondary, #999);
  background: color-mix(
    in srgb,
    var(--color-primary, #315afd) 30%,
    transparent
  );
  border-color: color-mix(
    in srgb,
    var(--color-primary, #315afd) 40%,
    transparent
  );
}
.seo-feed-card .favi img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.seo-feed-card .fname {
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.3;
  color: var(--color, #fff);
}

/* === URL List === */
.seo-url-list {
  width: 220px;
  flex-shrink: 0;
  border-right: var(--border-width, 1px) solid var(--color-border, #2b2b2b);
  padding: var(--padding-small, 6px) var(--padding, 10px);
  overflow-y: auto;
  padding-top: 50px;
}
.seo-url-list h2 {
  font-size: 10px;
  color: var(--color-secondary, #999);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--padding-small, 6px);
  font-weight: 600;
  padding: var(--padding, 10px) 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: none;
}
.seo-url-item {
  display: block;
  padding: 6px 8px;
  border-radius: 0;
  margin-bottom: 1px;
  transition: all 0.15s;
}
.seo-url-item:hover {
  background: var(--color-hover, #2b2b2e);
}
.seo-url-item .utitle {
  font-size: 13px;
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  color: var(--color, #ccc);
}
.seo-url-item .utitle.current {
  font-weight: 600;
  color: var(--color, #fff);
}
.seo-url-item .udate {
  font-size: 11px;
  color: var(--color-secondary, #666);
  margin-top: 2px;
}

/* === Details — article === */
.seo-details {
  flex: 1;
  min-width: 0;
  overflow-y: auto;
}
.seo-article {
  padding: var(--padding-large, 16px) calc(var(--padding, 10px) * 2);
  padding-top: 50px;
}
.seo-article .title-box {
  padding: var(--padding-large, 16px) 0;
  border-bottom: var(--border-width, 1px) solid var(--color-border, #2b2b2b);
  margin-bottom: calc(var(--padding, 10px) * 1.5);
}
.seo-article .title-box .title {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: var(--padding, 10px);
  color: var(--color, #fff);
}
.seo-article .title-box .infos {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--color-secondary, #999);
  flex-wrap: wrap;
}
.seo-article .title-box .infos .author {
  color: var(--color-primary, #315afd);
}
.seo-article .title-box .infos .sep {
  color: var(--color-border, #2b2b2b);
}
.seo-article .title-box .infos .feed-name {
  color: var(--color-primary, #315afd);
}

/* === Content body (from UrlDetails CSS) === */
.seo-content {
  padding: 0;
  line-height: 1.5;
  word-wrap: break-word;
  overflow-wrap: anywhere;
  padding-top: 50px;
}
.seo-content
  :where(
    p,
    ul,
    ol,
    blockquote,
    table,
    hr,
    pre,
    figure,
    dl,
    iframe,
    video,
    audio
  ) {
  margin-bottom: calc(var(--padding, 10px) * 1.5);
}
.seo-content
  :where(
    p,
    ul,
    ol,
    blockquote,
    table,
    hr,
    pre,
    figure,
    dl,
    iframe,
    video,
    audio
  ):last-child {
  margin-bottom: 0;
}
.seo-content img {
  max-width: 100%;
  height: auto;
  display: block;
  margin-bottom: var(--padding, 10px);
}
.seo-content figure:not(:has(> pre)) {
  width: 100%;
  max-width: 100%;
  margin: calc(var(--padding, 10px) * 1.5) 0;
  display: flex;
  align-items: center;
  gap: calc(var(--padding, 10px) / 2);
  flex-direction: column;
  overflow-x: auto;
}
.seo-content figure img {
  flex-shrink: 0;
  width: auto;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
}
.seo-content figcaption {
  width: 100%;
  color: var(--color-secondary, #999);
  text-align: center;
  word-break: break-word;
  font-size: 14px;
  line-height: 1.6;
}
.seo-content figcaption:empty {
  display: none;
}
.seo-content h1 {
  font-size: 32px;
  font-weight: 700;
  margin: 0.4em 0;
}
.seo-content h2 {
  font-size: 28px;
  font-weight: 700;
  margin: 0.45em 0;
}
.seo-content h3 {
  font-size: 24px;
  font-weight: 700;
  margin: 0.5em 0;
}
.seo-content h4 {
  font-size: 20px;
  font-weight: 700;
  margin: 0.6em 0;
}
.seo-content h5 {
  font-size: 16px;
  font-weight: 700;
  margin: 0.7em 0;
}
.seo-content h6 {
  font-size: 14px;
  font-weight: 700;
  margin: 0.8em 0;
}
.seo-content p {
  margin-bottom: calc(var(--padding, 10px) * 1.5);
  overflow-wrap: anywhere;
  line-height: 1.5;
}
.seo-content > div > p {
  margin-bottom: calc(var(--padding, 10px) * 2);
}
.seo-content a {
  text-underline-offset: 2px;
  overflow-wrap: anywhere;
  text-decoration: underline;
  color: var(--color-primary, #315afd) !important;
}
.seo-content a:hover {
  color: var(--color-secondary, #999) !important;
}
.seo-content strong,
.seo-content b {
  font-weight: 600;
}
.seo-content em,
.seo-content i {
  font-style: italic;
}
.seo-content blockquote {
  border-left: var(--border-width, 1px) solid var(--color-border, #2b2b2b);
  color: var(--color, #fff);
  background: var(--color-hover, #2b2b2e);
  padding: var(--padding, 10px) calc(var(--padding, 10px) * 1.2);
  border-radius: 0;
  margin: 15px 0;
}
.seo-content blockquote > :last-child {
  margin-bottom: 0;
}
.seo-content u {
  text-decoration: underline;
}
.seo-content ul {
  padding-left: calc(var(--padding, 10px) * 2);
  margin-left: var(--padding, 10px);
  list-style: outside;
}
.seo-content ol {
  padding-left: calc(var(--padding, 10px) * 2);
  margin-left: var(--padding, 10px);
  list-style: decimal;
}
.seo-content li {
  margin-bottom: calc(var(--padding, 10px) / 2);
  overflow-wrap: anywhere;
  line-height: 1.6;
}
.seo-content li > ul,
.seo-content li > ol {
  margin-top: calc(var(--padding, 10px) / 2);
  margin-bottom: 0;
}
.seo-content code {
  border: var(--border-width, 1px) solid var(--color-border, #2b2b2b);
  border-radius: 0;
  padding: 2px 4px;
  font-family: "Source Code Pro", "Courier New", Consolas, monospace;
  font-size: 14px;
  background: var(--color-hover, #2b2b2e);
  color: var(--color, #fff);
}
.seo-content pre {
  background: var(--color-hover, #2b2b2e);
  border: var(--border-width, 1px) solid var(--color-border, #2b2b2b);
  border-radius: 0;
  padding: var(--padding, 10px);
  margin-bottom: var(--padding, 10px);
  font-family: "Source Code Pro", "Courier New", Consolas, monospace;
  font-size: 14px;
  line-height: 1.6;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}
.seo-content pre code {
  background: transparent;
  border: none;
  padding: 0;
}
.seo-content code.hljs {
  background: transparent;
  padding: 0;
}
.seo-content .hljs {
  color: #e6edf3;
  background: transparent;
}
.seo-content .hljs-comment,
.seo-content .hljs-quote {
  color: #8b949e;
  font-style: italic;
}
.seo-content .hljs-keyword,
.seo-content .hljs-selector-tag,
.seo-content .hljs-literal,
.seo-content .hljs-name,
.seo-content .hljs-operator,
.seo-content .hljs-built_in,
.seo-content .hljs-doctag {
  color: #ff7b72;
  font-weight: 600;
}
.seo-content .hljs-type,
.seo-content .hljs-class .hljs-title,
.seo-content .hljs-title,
.seo-content .hljs-title.class_,
.seo-content .hljs-title.function_ {
  color: #d2a8ff;
}
.seo-content .hljs-string,
.seo-content .hljs-regexp,
.seo-content .hljs-symbol,
.seo-content .hljs-bullet,
.seo-content .hljs-link,
.seo-content .hljs-template-variable,
.seo-content .hljs-variable,
.seo-content .hljs-variable.language_ {
  color: #a5d6ff;
}
.seo-content .hljs-number,
.seo-content .hljs-attr,
.seo-content .hljs-attribute,
.seo-content .hljs-property,
.seo-content .hljs-params,
.seo-content .hljs-meta,
.seo-content .hljs-subst {
  color: #79c0ff;
}
.seo-content .hljs-tag,
.seo-content .hljs-punctuation {
  color: #c9d1d9;
}
.seo-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: calc(var(--padding, 10px) * 1.5);
}
.seo-content caption {
  caption-side: bottom;
  padding-top: calc(var(--padding, 10px) / 1.5);
  color: var(--color-secondary, #999);
  text-align: left;
  font-size: 14px;
  line-height: 1.6;
}
.seo-content thead {
  border-bottom: calc(var(--border-width, 1px) * 2) solid
    var(--color-border, #2b2b2b);
}
.seo-content th,
.seo-content td {
  border: var(--border-width, 1px) solid var(--color-border, #2b2b2b);
  padding: calc(var(--padding, 10px) * 0.75) var(--padding, 10px);
  text-align: left;
  vertical-align: top;
  line-height: 1.6;
}
.seo-content th {
  background: var(--color-hover, #2b2b2e);
  font-weight: 600;
  white-space: nowrap;
}
.seo-content tbody tr:nth-child(2n) {
  background: var(--color-hover, #2b2b2e);
}
.seo-content hr {
  border: none;
  border-top: var(--border-width, 1px) solid var(--color-border, #2b2b2b);
  margin: calc(var(--padding, 10px) * 2) 0;
}
.seo-content iframe,
.seo-content video,
.seo-content audio {
  max-width: 100%;
  display: block;
}
.seo-content iframe {
  border: 0;
  width: 100%;
}
.seo-content audio {
  width: 100%;
}
.seo-content span {
  display: inline;
}
.seo-content dl {
  margin-left: 0;
}
.seo-content dt {
  margin-bottom: calc(var(--padding, 10px) / 3);
  font-weight: 600;
}
.seo-content dd {
  margin-left: calc(var(--padding, 10px) * 1.5);
  margin-bottom: calc(var(--padding, 10px) / 1.5);
}
.seo-content mark {
  background: var(--color-hover, #2b2b2e);
  color: var(--color, #fff);
  border-radius: 0;
  padding: 0 2px;
}
.seo-content small {
  color: var(--color-secondary, #999);
  font-size: 12px;
}
.seo-content sup,
.seo-content sub {
  vertical-align: baseline;
  font-size: 12px;
  line-height: 0;
  position: relative;
}
.seo-content sup {
  top: -0.5em;
}
.seo-content sub {
  bottom: -0.25em;
}

/* === Redirect Modal === */
.seo-redirect-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}
.seo-redirect-modal {
  background: var(--color-bg, #0d0d0d);
  border: var(--border-width, 1px) solid var(--color-border, #2b2b2b);
  padding: 36px 40px 28px;
  text-align: center;
  max-width: 360px;
  width: 90%;
}
.seo-redirect-icon {
  margin-bottom: 16px;
}
.seo-redirect-icon svg {
  display: block;
  margin: 0 auto;
}
.seo-redirect-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color, #fff);
}
.seo-redirect-countdown {
  font-size: 56px;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 8px;
  color: var(--color-primary, #315afd);
  font-variant-numeric: tabular-nums;
}
.seo-redirect-desc {
  font-size: 13px;
  color: var(--color-secondary, #999);
  margin-bottom: 24px;
}
.seo-redirect-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
}
.seo-redirect-btn {
  padding: 8px 24px;
  font-size: 14px;
  font-family: inherit;
  border: 0;
  cursor: pointer;
  transition: opacity 0.15s;
}
.seo-redirect-btn.primary {
  background: var(--color-primary, #315afd);
  color: var(--color-active, #fff);
}
.seo-redirect-btn.cancel {
  background: transparent;
  color: var(--color-secondary, #999);
  border: var(--border-width, 1px) solid var(--color-border, #2b2b2b);
}
.seo-redirect-btn:hover {
  opacity: 0.85;
}
.seo-content dl {
  margin-left: 0;
}
.seo-content dt {
  margin-bottom: calc(var(--padding, 10px) / 3);
  font-weight: 600;
}
.seo-content dd {
  margin-left: calc(var(--padding, 10px) * 1.5);
  margin-bottom: calc(var(--padding, 10px) / 1.5);
}
.seo-content mark {
  background: var(--color-hover, #2b2b2e);
  color: var(--color, #fff);
  border-radius: 0;
  padding: 0 2px;
}
.seo-content small {
  color: var(--color-secondary, #999);
  font-size: 12px;
}
.seo-content sup,
.seo-content sub {
  vertical-align: baseline;
  font-size: 12px;
  line-height: 0;
  position: relative;
}
.seo-content sup {
  top: -0.5em;
}
.seo-content sub {
  bottom: -0.25em;
}

/* === Actions === */
.seo-actions {
  margin-top: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: var(--padding-large, 16px);
  border-top: var(--border-width, 1px) solid var(--color-border, #2b2b2b);
}
.seo-actions a {
  display: inline-flex;
  align-items: center;
  padding: 7px 16px;
  font-size: 13px;
  transition: all 0.15s;
}
.seo-actions a.seo-original {
  border: var(--border-width, 1px) solid var(--color-border, #2b2b2b);
  color: var(--color, #fff) !important;
  text-decoration: none;
}
.seo-actions a.seo-original:hover {
  background: var(--color-hover, #2b2b2e);
}
.seo-actions a.seo-app {
  background: var(--color-primary, #315afd);
  color: var(--color-active, #fff) !important;
  text-decoration: none;
}
.seo-actions a.seo-app:hover {
  opacity: 0.85;
}

/* === Footer === */
.seo-footer {
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
  border-top: var(--border-width, 1px) solid var(--color-border, #2b2b2b);
  font-size: 12px;
  color: var(--color-secondary, #666);
  gap: 20px;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  background: #0d0d0d;
}
.seo-footer a {
  color: var(--color-secondary, #666);
}
.seo-footer a:hover {
  color: var(--color, --#fff);
}

.seo-aggregation-notice {
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  margin-top: 30px;
  padding: 10px;
  font-size: 12px;
}

.seo-copyright-notice {
  border: 1px solid #555;
  color: #999;
  margin-top: 30px;
  padding: 10px;
  font-size: 12px;
}