:root {
  color-scheme: light;
  --bg: #f5f7f2;
  --surface: #ffffff;
  --surface-soft: #f0f6f3;
  --line: #d7dfd8;
  --text: #1e2825;
  --muted: #65736f;
  --teal: #08756d;
  --teal-dark: #075f5b;
  --amber: #d99a21;
  --coral: #d86243;
  --blue: #2c6fbd;
  --ink-soft: #31443f;
  --shadow: 0 16px 34px rgba(33, 47, 42, 0.11);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.65;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(8, 117, 109, 0.08), transparent 38%),
    linear-gradient(180deg, rgba(217, 154, 33, 0.08), transparent 44%);
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.topline {
  width: min(1180px, calc(100% - 28px));
  min-height: 76px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 260px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  background: var(--teal);
  color: #ffffff;
  border-radius: var(--radius);
  font-size: 1.35rem;
  font-weight: 800;
  box-shadow: inset 0 -8px 18px rgba(0, 0, 0, 0.18);
}

.brand strong {
  display: block;
  line-height: 1.1;
  font-size: 1.18rem;
  letter-spacing: 0;
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 0.77rem;
  line-height: 1.35;
  margin-top: 3px;
}

.search {
  width: min(430px, 100%);
  height: 44px;
  display: grid;
  grid-template-columns: 1fr 44px;
  background: #f7faf8;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.search input {
  min-width: 0;
  border: 0;
  background: transparent;
  color: var(--text);
  padding: 0 14px;
  outline: none;
}

.search input:focus {
  box-shadow: inset 0 0 0 2px rgba(8, 117, 109, 0.18);
}

.search button {
  display: grid;
  place-items: center;
  border: 0;
  background: var(--teal);
  color: #ffffff;
  font-size: 1.45rem;
  line-height: 1;
}

.category-nav {
  width: min(1180px, calc(100% - 28px));
  margin: 0 auto;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 0 0 12px;
  scrollbar-width: thin;
}

.category-button {
  flex: 0 0 auto;
  min-height: 34px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink-soft);
  border-radius: 999px;
  padding: 6px 14px;
  font-weight: 700;
  font-size: 0.9rem;
}

.category-button.is-active {
  background: var(--teal-dark);
  border-color: var(--teal-dark);
  color: #ffffff;
}

.page-shell {
  width: min(1180px, calc(100% - 28px));
  margin: 18px auto 54px;
}

.notice {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 13px;
  background: #fff9ea;
  border: 1px solid rgba(217, 154, 33, 0.34);
  border-radius: var(--radius);
  color: #5c4619;
  font-size: 0.88rem;
}

.notice strong {
  color: #8a5a00;
  text-transform: uppercase;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 22px;
  margin-top: 18px;
  align-items: start;
}

.content-area,
.sidebar {
  min-width: 0;
}

.feature {
  position: relative;
  min-height: 278px;
  overflow: hidden;
  border-radius: var(--radius);
  background: #18322e;
  box-shadow: var(--shadow);
}

.feature img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  transition: transform 180ms ease;
}

.feature::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(16, 34, 31, 0.82), rgba(16, 34, 31, 0.44) 48%, rgba(16, 34, 31, 0.04)),
    linear-gradient(0deg, rgba(16, 34, 31, 0.24), rgba(16, 34, 31, 0));
}

.feature-link {
  display: block;
  min-height: inherit;
  color: inherit;
  text-decoration: none;
}

.feature-link:hover img {
  transform: scale(1.025);
}

.feature-link:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 3px;
}

.feature-copy {
  position: relative;
  z-index: 1;
  width: min(520px, calc(100% - 32px));
  padding: 30px;
  color: #ffffff;
}

.eyebrow,
.section-kicker {
  display: inline-flex;
  align-items: center;
  color: var(--amber);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.feature h1 {
  margin: 10px 0 10px;
  font-size: clamp(1.58rem, 3vw, 2.55rem);
  line-height: 1.18;
  letter-spacing: 0;
}

.feature p {
  max-width: 470px;
  margin: 0;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
}

.feature-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.78rem;
  font-weight: 800;
}

.feature-meta span {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 4px 10px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
}

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 14px;
  margin: 24px 0 12px;
}

.toolbar h2,
.side-block h2,
.thread-detail h1,
.thread-detail h2 {
  margin: 0;
  color: var(--text);
  letter-spacing: 0;
}

.toolbar h2 {
  font-size: 1.34rem;
}

.section-kicker {
  margin: 0 0 2px;
  color: var(--coral);
}

.sort-label {
  display: grid;
  gap: 4px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.sort-label select {
  height: 38px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  border-radius: var(--radius);
  padding: 0 34px 0 10px;
}

.article-list {
  display: grid;
  gap: 12px;
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
  padding: 12px 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.pagination p {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
}

.page-buttons {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

.page-button {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid #dce6df;
  background: #fafcfb;
  color: var(--ink-soft);
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 900;
  line-height: 1;
  cursor: pointer;
}

.page-button:hover {
  border-color: rgba(8, 117, 109, 0.5);
  color: var(--teal-dark);
}

.page-button.is-active {
  background: var(--teal);
  border-color: var(--teal);
  color: #ffffff;
}

.page-button:disabled {
  cursor: not-allowed;
  opacity: 0.4;
}

.article-card {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 14px;
  padding: 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 8px 18px rgba(31, 45, 39, 0.05);
}

.article-card:hover {
  border-color: rgba(8, 117, 109, 0.42);
}

.article-thumb {
  display: block;
  min-width: 0;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none;
}

.article-thumb img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  transition: transform 160ms ease;
}

.article-card:hover .article-thumb img {
  transform: scale(1.035);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.78rem;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 2px 8px;
  border-radius: 999px;
  background: #fff1dc;
  color: #8a5200;
  font-weight: 800;
  font-size: 0.75rem;
}

.pill.warn {
  background: #e7f5ee;
  color: #0b6a4d;
}

.article-card h3 {
  margin: 7px 0 5px;
  font-size: 1.04rem;
  line-height: 1.38;
  letter-spacing: 0;
}

.article-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.article-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.mini-tag,
.tag-button {
  border: 1px solid #dce6df;
  background: #fafcfb;
  color: var(--ink-soft);
  border-radius: 999px;
  padding: 3px 8px;
  font-size: 0.75rem;
  font-weight: 700;
}

.thread-detail {
  margin-top: 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.thread-head {
  padding: 18px 18px 14px;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(8, 117, 109, 0.1), rgba(217, 154, 33, 0.08)),
    #ffffff;
}

.thread-head h1,
.thread-head h2 {
  margin: 8px 0 8px;
  font-size: 1.34rem;
  line-height: 1.36;
}

.thread-cover {
  width: 100%;
  aspect-ratio: 16 / 8;
  display: block;
  object-fit: cover;
  margin: 12px 0;
  border: 1px solid rgba(8, 117, 109, 0.16);
  border-radius: var(--radius);
}

.thread-summary {
  margin: 0;
  color: var(--ink-soft);
}

.thread-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.stat {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  padding: 4px 9px;
  border: 1px solid #d9e5df;
  background: rgba(255, 255, 255, 0.74);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
}

.source-stat {
  color: var(--teal-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.back-link {
  margin: 0 0 12px;
  color: var(--teal-dark);
  font-size: 0.9rem;
  font-weight: 800;
}

.res-list {
  margin: 0;
  padding: 14px 18px 18px;
  list-style: none;
}

.res {
  padding: 13px 0;
  border-bottom: 1px solid #edf1ed;
}

.res:last-child {
  border-bottom: 0;
}

.res-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  color: #83908c;
  font-size: 0.72rem;
  font-weight: 600;
}

.res-meta .res-no {
  color: #5e6d68;
  font-weight: 800;
}

.res-meta .id {
  color: #9aa5a1;
  font-weight: 500;
}

.res-meta time {
  color: #9aa5a1;
  font-weight: 500;
}

.res p {
  margin: 6px 0 0;
  color: #1e2926;
  white-space: pre-wrap;
}

.res.is-pick {
  margin-inline: -8px;
  padding: 13px 8px;
  background: #fff8e8;
  border: 1px solid rgba(217, 154, 33, 0.28);
  border-radius: var(--radius);
}

.quote {
  color: var(--blue);
  font-weight: 800;
}

.thread-conclusion {
  padding: 18px;
  border-top: 1px solid var(--line);
  background: #f8fbf9;
}

.thread-conclusion h2 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.thread-conclusion p {
  margin: 0;
  color: var(--ink-soft);
  font-weight: 600;
}

.sidebar {
  position: sticky;
  top: 106px;
  display: grid;
  gap: 14px;
}

.side-block {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 15px;
  box-shadow: 0 8px 18px rgba(31, 45, 39, 0.05);
}

.side-block h2 {
  font-size: 1rem;
  padding-bottom: 10px;
  border-bottom: 1px solid #edf1ed;
}

.ranking-list {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.ranking-list button,
.ranking-list a {
  width: 100%;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  border: 0;
  background: transparent;
  color: var(--text);
  padding: 8px 0;
  text-align: left;
  text-decoration: none;
}

.rank-no {
  position: relative;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid #d7e2dc;
  border-radius: 50%;
  background:
    linear-gradient(180deg, #ffffff, #edf5f2);
  color: var(--teal-dark);
  font-weight: 900;
  font-size: 0.86rem;
  line-height: 1;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.9),
    0 6px 14px rgba(32, 48, 43, 0.08);
}

.ranking-list .rank-no {
  display: grid;
  margin-top: 0;
  color: var(--teal-dark);
  font-size: 0.86rem;
  line-height: 1;
}

.rank-no::after {
  content: "";
  position: absolute;
  inset: 4px;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: inherit;
  pointer-events: none;
}

.ranking-list li:nth-child(1) .rank-no {
  border-color: #d99a21;
  background: linear-gradient(180deg, #ffe7a7, #d99a21);
  color: #4d3500;
}

.ranking-list li:nth-child(2) .rank-no {
  border-color: #9aa7ae;
  background: linear-gradient(180deg, #edf2f4, #b4c0c5);
  color: #2e4244;
}

.ranking-list li:nth-child(3) .rank-no {
  border-color: #c46e4b;
  background: linear-gradient(180deg, #ffd8bf, #d86243);
  color: #4a2114;
}

.ranking-list strong {
  display: block;
  font-size: 0.87rem;
  line-height: 1.42;
}

.ranking-list a > span:not(.rank-no),
.ranking-list button > span:not(.rank-no) {
  display: block;
  color: var(--muted);
  font-size: 0.74rem;
  margin-top: 2px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.tag-button {
  cursor: pointer;
}

.tag-button:hover,
.mini-tag:hover {
  border-color: rgba(8, 117, 109, 0.5);
  color: var(--teal-dark);
}

.empty-state {
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #ffffff;
  color: var(--muted);
  padding: 22px 14px;
  text-align: center;
}

.site-footer p {
  margin: 0 0 8px;
  font-size: 0.82rem;
}

.site-footer nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 0.84rem;
  font-weight: 700;
}

@media (max-width: 900px) {
  .topline {
    min-height: 92px;
    padding: 12px 0;
    align-items: stretch;
    flex-direction: column;
  }

  .brand {
    min-width: 0;
  }

  .search {
    width: 100%;
  }

  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    grid-template-columns: 1fr 1fr;
  }

}

@media (max-width: 640px) {
  .page-shell,
  .topline,
  .category-nav {
    width: min(100% - 18px, 1180px);
  }

  .notice {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .feature {
    min-height: 330px;
  }

  .feature-copy {
    width: 100%;
    padding: 24px 18px;
  }

  .feature::after {
    background: linear-gradient(90deg, rgba(16, 34, 31, 0.86), rgba(16, 34, 31, 0.36));
  }

  .toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .sort-label select {
    width: 100%;
  }

  .article-card {
    grid-template-columns: 1fr;
  }

  .article-thumb {
    width: 100%;
  }

  .pagination {
    align-items: stretch;
    flex-direction: column;
  }

  .page-buttons {
    justify-content: center;
  }

  .sidebar {
    grid-template-columns: 1fr;
  }

  .thread-head,
  .res-list {
    padding-left: 14px;
    padding-right: 14px;
  }
}