:root {
  --page-bg: #eef3f6;
  --header: #293f53;
  --header-dark: #22384d;
  --blue: #3498db;
  --blue-dark: #1776ba;
  --link: #126eb3;
  --teal: #1abc9c;
  --side: #334f6b;
  --line: #e7edf1;
  --text: #18314a;
  --muted: #5f7180;
  --soft: #f7fafc;
  --answer: #3498db;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--page-bg);
}

body {
  margin: 0;
  color: var(--text);
  background: var(--page-bg);
  font: 14px/1.55 "Segoe UI", "Microsoft JhengHei", Arial, sans-serif;
  letter-spacing: 0;
}

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

a:hover {
  text-decoration: underline;
}

button,
input {
  font: inherit;
}

.site-header {
  min-height: 98px;
  background: var(--header);
  border-top: 3px solid #182939;
}

.site-header-inner {
  display: grid;
  grid-template-columns: 280px minmax(80px, 1fr) auto;
  align-items: center;
  width: min(1024px, calc(100% - 28px));
  min-height: 95px;
  margin: 0 auto;
}

.site-logo {
  display: inline-flex;
  align-items: center;
}

.site-logo img {
  display: block;
  width: 275px;
  max-width: 100%;
  height: auto;
}

.top-nav {
  display: flex;
  align-self: stretch;
}

.nav-item {
  display: grid;
  place-items: center;
  min-width: 62px;
  padding: 10px 12px;
  color: #fff;
  background: var(--header-dark);
  border-left: 1px solid rgba(255, 255, 255, .12);
  font-size: 14px;
  font-weight: 700;
}

.nav-item:hover {
  background: #2f516f;
  text-decoration: none;
}

.nav-icon {
  display: block;
  line-height: 1;
  font-size: 27px;
  font-weight: 800;
}

.site-wrap {
  display: grid;
  grid-template-columns: minmax(0, 762px) 256px;
  gap: 6px;
  width: min(1024px, calc(100% - 28px));
  margin: 20px auto 44px;
}

.content-column,
.side-column {
  min-width: 0;
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 52px;
  padding: 0 20px;
  color: #fff;
  background: var(--blue);
}

.section-heading h1 {
  margin: 0;
  font-size: 25px;
  line-height: 1;
  font-weight: 800;
}

.rss-mark,
.rss-small {
  width: 20px;
  height: 20px;
  border: 4px solid currentColor;
  border-left-color: transparent;
  border-bottom-color: transparent;
  border-radius: 50%;
  color: #d7efff;
  transform: rotate(-45deg);
}

.rss-small {
  width: 15px;
  height: 15px;
  border-width: 3px;
  color: var(--link);
}

.result-strip {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 12px;
  color: #6d7d8a;
  background: #fff;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
}

.question-list {
  display: grid;
  gap: 5px;
}

.question-card {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  min-height: 96px;
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.question-card:hover {
  background: #fbfdff;
}

.stat-grid {
  display: grid;
  grid-template-columns: 68px 65px;
  grid-template-rows: 66px 24px;
  padding: 10px 0 0 10px;
}

.vote-box {
  display: grid;
  justify-items: center;
  align-content: start;
  gap: 1px;
  color: #234760;
  background: #f1f5f7;
}

.vote-box strong,
.answer-box strong {
  font-size: 23px;
  line-height: 1.05;
  font-weight: 400;
}

.vote-box span,
.answer-box span {
  font-size: 12px;
}

.arrow-up,
.arrow-down {
  width: 0;
  height: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
}

.arrow-up {
  border-bottom: 10px solid #3c7fb4;
}

.arrow-down {
  border-top: 10px solid #d5dde2;
}

.answer-box {
  display: grid;
  justify-items: center;
  align-content: center;
  color: #fff;
  background: var(--answer);
}

.view-count {
  grid-column: 1 / 3;
  align-self: end;
  padding-left: 34px;
  color: #15365b;
  font-size: 12px;
  white-space: nowrap;
}

.question-summary {
  padding: 14px 12px 10px;
  min-width: 0;
}

.question-summary h2 {
  margin: 0 0 5px;
  font-size: 18px;
  line-height: 1.35;
  font-weight: 800;
}

.question-summary h2 a {
  color: var(--link);
}

.question-excerpt {
  margin: 4px 0 5px;
  color: #526a7c;
  font-size: 13px;
  overflow-wrap: anywhere;
}

.question-meta,
.answer-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  color: #12355b;
  font-size: 12px;
}

.question-meta span {
  margin-right: 4px;
}

.question-meta strong {
  font-weight: 800;
}

.category-chip {
  display: inline-block;
  margin-top: 5px;
  padding: 2px 9px;
  color: #fff;
  background: #ff8a1d;
  font-size: 12px;
  font-weight: 700;
}

.search-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 44px;
  height: 51px;
  padding: 7px;
  background: var(--teal);
}

.search-panel input {
  min-width: 0;
  border: 0;
  padding: 0 10px;
  color: var(--text);
  background: #fff;
  outline: 0;
}

.search-panel button {
  border: 0;
  color: #fff;
  background: #178b77;
  font-size: 21px;
  cursor: pointer;
}

.notice-panel {
  padding: 18px 20px;
  color: #fff;
  background: var(--side);
  font-size: 15px;
}

.notice-panel p {
  margin: 0 0 4px;
  font-weight: 700;
}

.side-panel {
  margin-top: 5px;
  padding: 22px 20px;
  background: #fff;
}

.category-list {
  display: grid;
}

.category-button {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--line);
  padding: 4px 0;
  color: var(--link);
  background: transparent;
  text-align: left;
  cursor: pointer;
}

.category-button span:last-child {
  color: #5d6d7a;
  font-size: 12px;
}

.category-button.active,
.category-button:hover {
  color: var(--blue-dark);
  font-weight: 800;
}

.feed-panel a {
  display: inline-flex;
  align-items: center;
  gap: 9px;
}

.breadcrumb {
  display: inline-block;
  margin: 0 0 10px;
  font-weight: 700;
}

.question-main {
  padding: 18px;
  background: #fff;
}

.question-main h1 {
  margin: 0 0 8px;
  color: var(--link);
  font-size: 28px;
  line-height: 1.25;
  font-weight: 800;
}

.question-main h2 {
  margin: 24px 0 12px;
  font-size: 22px;
  color: var(--text);
}

.question-body,
.post-body,
.answer {
  overflow-wrap: anywhere;
}

.post-body {
  margin-top: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.post-body img {
  max-width: 100%;
  height: auto !important;
}

.post-body table {
  max-width: 100%;
  border-collapse: collapse;
}

.post-body td,
.post-body th {
  border: 1px solid var(--line);
  padding: 6px;
}

.answers {
  display: grid;
  gap: 14px;
}

.answer {
  padding: 14px 16px;
  background: #f9fbfd;
  border: 1px solid var(--line);
}

.answer .post-body {
  margin-top: 8px;
  padding-top: 10px;
}

.info-panel h3,
.related-panel h3 {
  margin: 0 0 12px;
  color: var(--text);
  font-size: 16px;
}

.info-panel dl {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 7px 10px;
  margin: 0;
}

.info-panel dt {
  color: var(--muted);
}

.info-panel dd {
  margin: 0;
}

.related-list {
  display: grid;
  gap: 10px;
}

.related-link {
  display: grid;
  gap: 2px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.related-link small,
.empty {
  color: var(--muted);
}

@media (max-width: 900px) {
  .site-header-inner {
    grid-template-columns: 1fr auto;
  }

  .site-wrap {
    grid-template-columns: 1fr;
  }

  .side-column {
    order: -1;
  }
}

@media (max-width: 620px) {
  .site-header {
    min-height: 0;
  }

  .site-header-inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 10px 0;
  }

  .site-logo img {
    width: 245px;
  }

  .top-nav {
    width: 100%;
  }

  .nav-item {
    flex: 1;
    min-width: 0;
  }

  .question-card {
    grid-template-columns: 96px minmax(0, 1fr);
  }

  .stat-grid {
    grid-template-columns: 48px 48px;
    padding-left: 0;
  }

  .view-count {
    padding-left: 12px;
  }

  .question-summary h2 {
    font-size: 16px;
  }
}