:root {
  --bg: #f6f7f9;
  --paper: #fff;
  --ink: #202d36;
  --muted: #63717d;
  --accent: #305165;
  --line: #e0e5e9;
  --wash: #eef3f6;
  --note: #fbf3e7;
  --note-ink: #725525;
  --font: "PingFang SC","Microsoft YaHei","Noto Sans CJK SC",-apple-system,BlinkMacSystemFont,sans-serif;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
}

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  cursor: pointer;
  color: inherit;
}

button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 3px solid #658ca3;
  outline-offset: 4px;
}

a {
  color: inherit;
}

svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.skip {
  position: absolute;
  left: 16px;
  top: -100px;
  background: white;
  padding: 14px;
  z-index: 20;
}

.skip:focus {
  top: 12px;
}

.masthead {
  background: white;
  border-bottom: 1px solid var(--line);
}

.masthead-inner {
  max-width: 1160px;
  min-height: 76px;
  margin: auto;
  display: flex;
  align-items: center;
  padding: 0 32px;
  gap: 28px;
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 19px;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: .025em;
}

.wordmark svg {
  width: 25px;
  height: 25px;
  color: var(--accent);
}

.masthead-caption {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .05em;
}

.quiet-button {
  margin-left: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--line);
  background: white;
  border-radius: 7px;
  padding: 0 14px;
  min-height: 44px;
  font-size: 12px;
}

.quiet-button:hover {
  background: var(--wash);
  border-color: #a4b7c4;
}

.page {
  max-width: 1160px;
  margin: auto;
  padding: 0 32px;
}

.edition {
  padding: 36px 0 29px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 22px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--muted);
  margin: 0 0 12px;
  font-weight: 500;
}

h1 {
  font-family: var(--font);
  font-size: 32px;
  line-height: 1.45;
  font-weight: 600;
  letter-spacing: .015em;
  margin: 0;
}

.edition-intro {
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  margin: 10px 0 0;
}

.edition-meta {
  display: flex;
  flex-direction: column;
  gap: 9px;
  align-items: flex-end;
  color: var(--muted);
  font-size: 11px;
  white-space: nowrap;
}

.preview-dot:before {
  content: "";
  width: 5px;
  height: 5px;
  display: inline-block;
  background: #8295a1;
  border-radius: 50%;
  margin-right: 7px;
}

.reading-layout {
  display: grid;
  grid-template-columns: 210px minmax(0,1fr);
  align-items: start;
  gap: 40px;
  padding-top: 27px;
}

.directory {
  position: sticky;
  top: 24px;
}

.directory-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 0 0 10px;
}

.directory-head h2 {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
}

.directory-head>span {
  font-size: 11px;
  color: var(--muted);
}

.preference-summary {
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
  margin: 0 0 17px;
}

.category-tab {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 12px;
  min-height: 47px;
  margin-bottom: 4px;
  border: 1px solid transparent;
  background: none;
  border-radius: 7px;
  text-align: left;
  padding: 10px 13px;
  font-size: 13px;
  white-space: nowrap;
  transition: background .16s;
}

.category-tab:hover {
  background: var(--wash);
}

.category-tab.active {
  background: white;
  border-color: var(--line);
  font-weight: 600;
}

.category-tab .tab-count {
  font-size: 11px;
  font-weight: 400;
  color: var(--muted);
}

.directory-note {
  border-top: 1px solid var(--line);
  margin-top: 25px;
  padding-top: 14px;
}

.directory-note p {
  font-size: 11px;
  line-height: 1.9;
  color: var(--muted);
}

.feed-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 24px;
  margin: 0 0 12px;
  font-size: 13px;
  font-weight: 600;
}

.feed-toolbar>span:last-child {
  font-size: 11px;
  color: var(--muted);
  font-weight: 400;
}

.news-section {
  margin-bottom: 36px;
  scroll-margin-top: 18px;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 14px;
}

.section-header h2 {
  font-size: 20px;
  line-height: 1.5;
  font-weight: 600;
  letter-spacing: .01em;
  margin: 0;
}

.section-count {
  font-size: 11px;
  color: var(--muted);
}

.section-time {
  font-size: 11px;
  color: var(--muted);
  margin-left: auto;
}

.news-list {
  background: white;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}

.news-card+.news-card {
  border-top: 1px solid var(--line);
}

.platform-logo {
  width: 21px;
  height: 21px;
  display: inline-flex;
  flex: none;
  align-items: center;
  justify-content: center;
  border: 1px solid #e1e5e8;
  background: white;
  border-radius: 5px;
  font: 600 11px var(--font);
  color: #495b66;
  line-height: 1;
}

.platform-logo.x {
  background: #161b20;
  color: white;
  border-color: #161b20;
  font-size: 12px;
}

.platform-logo.reddit {
  background: #f4521a;
  color: white;
  border-color: #f4521a;
  border-radius: 50%;
  font-weight: 700;
}

.platform-logo.github {
  background: #202b33;
  color: white;
  border-color: #202b33;
}

.platform-logo.github svg {
  width: 15px;
  height: 15px;
  fill: currentColor;
  stroke: none;
}

.platform-logo.youtube {
  background: #dc2626;
  color: white;
  border-color: #dc2626;
  font-size: 9px;
}

.platform-logo.wechat {
  background: #148c4c;
  color: white;
  border-color: #148c4c;
}

.page-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 0 0 32px;
  margin-top: 20px;
  font-size: 11px;
  line-height: 1.9;
  color: var(--muted);
}

.corner-watermark {
  position: fixed;
  bottom: 10px;
  right: 16px;
  font-size: 9px;
  letter-spacing: .35em;
  color: #71848f;
  font-weight: 500;
  pointer-events: none;
  background: #f6f7f9de;
  padding: 3px 5px;
  border-radius: 3px;
}

.load-note {
  font-size: 14px;
  color: var(--muted);
}

.empty-state {
  background: white;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 38px;
  text-align: center;
}

.empty-state h2 {
  font-size: 22px;
}

.empty-state p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.empty-state button {
  margin: 20px auto 0;
}

dialog {
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  color: var(--ink);
  max-width: 640px;
  width: calc(100% - 28px);
  max-height: calc(100dvh - 28px);
  box-shadow: 0 20px 100px #18304120;
}

dialog::backdrop {
  background: #21364045;
  backdrop-filter: blur(3px);
}

dialog form {
  padding: 30px 32px;
}

.dialog-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.dialog-heading .eyebrow {
  margin: 0;
}

.icon-button {
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  border-radius: 6px;
  font-size: 27px;
  color: var(--muted);
}

.icon-button:hover {
  background: var(--wash);
}

dialog h2 {
  font-size: 25px;
  line-height: 1.5;
  font-weight: 600;
  margin: 0;
}

.dialog-intro {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.8;
  margin: 10px 0 22px;
}

.category-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.category-choice {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 12px;
  border: 1px solid var(--line);
  border-radius: 7px;
  cursor: pointer;
  min-height: 73px;
}

.category-choice:has(input:checked) {
  border-color: #819dac;
  background: #f3f7f9;
}

.category-choice input {
  accent-color: var(--accent);
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.category-name {
  font-size: 13px;
  font-weight: 500;
  display: block;
}

.category-desc {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.6;
  display: block;
  margin-top: 5px;
}

.selection-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 10px 0 18px;
  color: var(--muted);
  font-size: 12px;
}

.selection-row button {
  border: 0;
  background: transparent;
  color: var(--accent);
  min-height: 44px;
  padding: 0;
}

.dialog-foot {
  border-top: 1px solid var(--line);
  padding-top: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.dialog-foot p {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.8;
  max-width: 215px;
  margin: 0;
}

.primary-button {
  border: 0;
  border-radius: 7px;
  background: var(--accent);
  color: white;
  min-height: 46px;
  padding: 0 19px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  font-size: 13px;
  white-space: nowrap;
}

.primary-button:hover {
  background: #203e50;
}

.error {
  font-size: 13px;
  color: #9a3434;
}

.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--ink);
  color: white;
  padding: 12px 20px;
  font-size: 13px;
  border-radius: 8px;
  z-index: 5;
  max-width: calc(100% - 32px);
}

@media (max-width:960px) {
  .page,
.masthead-inner {
    padding-left: 24px;
    padding-right: 24px;
  }

  .reading-layout {
    grid-template-columns: 170px minmax(0,1fr);
    gap: 24px;
  }

  .category-tab {
    padding: 10px;
  }
}

@media (max-width:720px) {
  .masthead-inner {
    min-height: 65px;
    padding: 0 18px;
  }

  .masthead-caption {
    display: none;
  }

  .wordmark {
    font-size: 18px;
    gap: 9px;
  }

  .wordmark svg {
    width: 23px;
    height: 23px;
  }

  .quiet-button {
    padding: 0 11px;
    font-size: 12px;
  }

  .quiet-button svg {
    width: 17px;
  }

  .page {
    padding: 0 18px;
  }

  .edition {
    padding: 25px 0 23px;
    display: block;
  }

  h1 {
    font-size: 28px;
    line-height: 1.45;
  }

  .eyebrow {
    font-size: 11px;
  }

  .edition-intro {
    font-size: 13px;
    margin-top: 8px;
  }

  .edition-meta {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    margin-top: 16px;
    font-size: 10px;
  }

  .reading-layout {
    display: block;
    padding-top: 0;
  }

  .directory {
    position: sticky;
    top: 0;
    background: var(--bg);
    z-index: 2;
    padding: 12px 0 10px;
    border-bottom: 1px solid var(--line);
    margin-bottom: 20px;
  }

  .directory-head,
.preference-summary,
.directory-note {
    display: none;
  }

  #category-nav {
    display: flex;
    gap: 7px;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    padding: 3px 2px 7px;
    scrollbar-width: thin;
    scrollbar-color: #d4dce2 transparent;
  }

  .category-tab {
    width: auto;
    flex-shrink: 0;
    min-height: 44px;
    gap: 8px;
    margin: 0;
    padding: 9px 12px;
    font-size: 12px;
    border-color: var(--line);
    background: #f9fafb;
  }

  .category-tab.active {
    background: var(--ink);
    color: white;
    border-color: var(--ink);
  }

  .category-tab.active .tab-count {
    color: #e4e9ed;
  }

  .category-tab .tab-count {
    font-size: 10px;
  }

  .feed-toolbar {
    font-size: 12px;
    margin-bottom: 9px;
  }

  .section-header {
    margin-bottom: 11px;
    gap: 9px;
  }

  .section-header h2 {
    font-size: 19px;
  }

  .section-count,
.section-time {
    font-size: 10px;
  }

  .news-list {
    border-radius: 8px;
  }

  .news-section {
    margin-bottom: 29px;
  }

  .page-footer {
    display: block;
    margin-top: 10px;
    padding-bottom: 32px;
  }

  .page-footer>span {
    display: block;
  }

  .corner-watermark {
    right: 10px;
    bottom: 7px;
    font-size: 8px;
  }

  dialog form {
    padding: 20px 18px;
  }

  dialog h2 {
    font-size: 23px;
  }

  .dialog-intro {
    font-size: 12px;
    margin-bottom: 20px;
  }

  .category-grid {
    gap: 8px;
  }

  .category-choice {
    padding: 12px 9px;
    gap: 8px;
    min-height: 77px;
  }

  .category-name {
    font-size: 12px;
  }

  .category-desc {
    font-size: 10px;
  }

  .dialog-foot p {
    max-width: 155px;
  }

  .primary-button {
    padding: 0 15px;
    gap: 14px;
  }

  .toast {
    font-size: 12px;
    text-align: center;
  }
}

@media (max-width:360px) {
  .page {
    padding: 0 12px;
  }

  .category-choice {
    padding: 10px 7px;
  }

  .category-desc {
    font-size: 10px;
  }

  .dialog-foot {
    gap: 10px;
  }

  .dialog-foot p {
    max-width: 125px;
  }
}

@media (prefers-reduced-motion:reduce) {
  * {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}

@media (max-width:720px) {
  #news-feed {
    scroll-margin-top: 90px;
  }
}

.daily-summary {
  margin: 28px 0 4px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 25px 28px;
}

.summary-heading {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 17px;
}

.summary-heading h2 {
  font-size: 21px;
  line-height: 1.5;
  margin: 0;
  font-weight: 600;
}

.ai-label {
  display: inline-flex;
  font-size: 10px;
  line-height: 1.6;
  padding: 3px 7px;
  color: #725525;
  background: var(--note);
  border: 1px solid #eedfc8;
  border-radius: 4px;
  font-weight: 400;
}

.overview-text {
  max-width: 930px;
}

.overview-text p {
  font-size: 15px;
  line-height: 1.9;
  color: #34424c;
  margin: 0 0 11px;
}

.summary-details {
  border-top: 1px solid var(--line);
  margin-top: 16px;
  padding-top: 3px;
}

.summary-details summary {
  font-size: 12px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--accent);
  cursor: pointer;
  list-style: none;
}

.summary-details summary::-webkit-details-marker {
  display: none;
}

.summary-details dl {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 28px;
  margin: 10px 0 18px;
}

.summary-details dt {
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 6px;
}

.summary-details dd {
  font-size: 13px;
  line-height: 1.9;
  color: var(--muted);
  margin: 0;
}

.summary-scope {
  font-size: 10px;
  line-height: 1.8;
  color: var(--muted);
  margin: 10px 0 0;
}

@media (max-width:720px) {
  .daily-summary {
    padding: 20px 19px;
    margin-top: 22px;
  }

  .summary-heading h2 {
    font-size: 20px;
  }

  .overview-text p {
    font-size: 14px;
    line-height: 1.95;
    margin-bottom: 12px;
  }

  .summary-details dl {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .reading-layout {
    padding-top: 0;
  }
}

.feed-story {
  padding: 27px 29px;
}

.feed-story:hover {
  background: white;
}

.feed-story h3 {
  font-size: 22px;
  line-height: 1.55;
  margin: 11px 0 5px;
  font-weight: 600;
}

.story-kind {
  display: inline-block;
  font-size: 10px;
  line-height: 1.6;
  padding: 4px 9px;
  border-radius: 20px;
  background: #edf0f3;
  color: #596676;
  font-weight: 600;
  letter-spacing: .05em;
}

.story-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 44px;
  font-size: 12px;
  color: #697782;
  margin-bottom: 8px;
}

.story-source {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  text-decoration: none;
}

.story-source:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.story-source>span:last-child {
  font-size: 11px;
  color: #83909a;
}

.story-meta .platform-logo {
  border: 0;
  background: transparent;
  color: #485c6a;
  border-radius: 0;
  font-size: 15px;
  width: 19px;
  height: 21px;
}

.story-meta .platform-logo.reddit {
  color: #e44b1c;
}

.story-meta .platform-logo.github {
  color: #222c33;
}

.story-meta .platform-logo.wechat {
  color: #168e50;
}

.story-meta .platform-logo.youtube {
  color: #d92828;
}

.meta-dot {
  color: #a5aeb5;
}

.story-body p {
  font-size: 16px;
  line-height: 1.9;
  color: #34424c;
  margin: 0 0 13px;
  overflow-wrap: anywhere;
}

.story-body p:last-child {
  margin-bottom: 0;
}

.news-media {
  margin: 12px 0 20px;
}

.news-media img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 9px;
  background: #f3f5f7;
}

.news-media figcaption {
  font-size: 10px;
  line-height: 1.7;
  color: var(--muted);
  margin-top: 8px;
}

.feed-toolbar {
  margin-bottom: 22px;
}

.summary-scope {
  margin-top: 8px;
}

.news-list {
  border-radius: 10px;
}

@media (max-width:720px) {
  .feed-story {
    padding: 22px 19px;
  }

  .feed-story h3 {
    font-size: 21px;
    line-height: 1.6;
    margin: 10px 0 4px;
  }

  .story-body p {
    font-size: 16px;
    line-height: 1.95;
    margin-bottom: 13px;
  }

  .story-meta {
    font-size: 11px;
    gap: 7px;
    margin-bottom: 7px;
  }

  .story-kind {
    font-size: 10px;
    padding: 4px 9px;
  }

  .news-media {
    margin: 10px 0 19px;
  }

  .news-media img {
    border-radius: 8px;
  }

  .feed-toolbar {
    margin-bottom: 20px;
  }

  .section-time {
    font-size: 10px;
  }
}