:root {
  --bg: #f2f5f4;
  --surface: #ffffff;
  --surface-soft: #f7f9f8;
  --ink: #1d2a31;
  --muted: #64737a;
  --line: #dbe4e2;
  --brand: #1d6d5a;
  --brand-dark: #143f37;
  --accent: #d95740;
  --amber: #b9842a;
  --shadow: 0 1px 2px rgba(20, 38, 33, 0.06), 0 10px 28px rgba(20, 38, 33, 0.08);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
}

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

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

svg {
  display: block;
}

.app {
  min-height: calc(100vh - 112px);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.topbar-inner {
  max-width: 1180px;
  height: 64px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 17px;
  min-width: 0;
}

.brand-mark {
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  border-radius: var(--radius);
  display: grid;
  place-items: center;
  background: var(--brand);
  color: #fff;
  box-shadow: inset 0 -2px 0 rgba(0, 0, 0, 0.18);
}

.brand-mark svg {
  width: 20px;
  height: 20px;
}

.brand-name {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.top-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}

.search-box {
  width: min(320px, 44vw);
  height: 38px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
}

.search-box:focus-within {
  border-color: var(--brand);
  background: var(--surface);
}

.search-icon {
  width: 17px;
  height: 17px;
  flex: 0 0 17px;
  color: var(--muted);
}

.search-icon svg {
  width: 17px;
  height: 17px;
}

.search-box input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
}

.search-box input::placeholder {
  color: #93a0a6;
}

.icon-button {
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
}

.icon-button:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.icon-button svg {
  width: 18px;
  height: 18px;
}

.hero {
  position: relative;
  min-height: 276px;
  overflow: hidden;
  color: #fff;
  background-color: var(--brand-dark);
  background-size: cover;
  background-position: center;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(10, 36, 32, 0.76);
}

.hero-inner {
  position: relative;
  max-width: 1180px;
  margin: 0 auto;
  min-height: 276px;
  padding: 40px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.hero-copy {
  max-width: 720px;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  padding: 5px 10px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  color: #d7e8e1;
  background: rgba(255, 255, 255, 0.08);
}

.hero-copy h1 {
  margin: 0 0 10px;
  font-size: 34px;
  line-height: 1.25;
  letter-spacing: 0;
}

.hero-copy p {
  margin: 0;
  max-width: 640px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.86);
}

.hero-stats {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 26px;
}

.hero-stat {
  min-width: 72px;
}

.hero-stat strong {
  display: block;
  font-size: 22px;
  line-height: 1.2;
}

.hero-stat span {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.72);
}

.hero-avatar {
  flex: 0 0 auto;
  width: 122px;
  height: 122px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid rgba(255, 255, 255, 0.72);
  box-shadow: 0 12px 30px rgba(5, 22, 19, 0.3);
}

.hero-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.layout {
  max-width: 1180px;
  margin: 0 auto;
  padding: 30px 20px 64px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 28px;
}

.feed-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 18px;
}

.feed-head h2 {
  margin: 0;
  font-size: 21px;
  letter-spacing: 0;
}

.feed-head p {
  margin: 4px 0 0;
  font-size: 13px;
  color: var(--muted);
}

.segmented {
  display: inline-flex;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
}

.segmented button {
  min-height: 32px;
  padding: 0 13px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.segmented button.active {
  background: var(--surface);
  color: var(--brand);
  box-shadow: 0 1px 3px rgba(20, 38, 33, 0.12);
}

.post-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.post-card {
  display: flex;
  flex-direction: column;
  min-height: 252px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
  transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
}

.post-card:hover {
  transform: translateY(-2px);
  border-color: #c7d6d2;
  box-shadow: var(--shadow);
}

.card-accent {
  height: 5px;
  flex: 0 0 5px;
  background: var(--post-color, var(--brand));
}

.card-body {
  flex: 1;
  padding: 20px 22px 12px;
}

.card-kicker {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

.card-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  max-width: 70%;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--brand);
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-tag svg {
  width: 13px;
  height: 13px;
  flex: 0 0 13px;
}

.card-date {
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}

.card-body h3 {
  margin: 0 0 9px;
  font-size: 18px;
  line-height: 1.4;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.card-body h3 a:hover {
  color: var(--brand);
}

.card-body p {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 22px 16px;
  border-top: 1px solid var(--line);
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}

.meta-item svg {
  width: 15px;
  height: 15px;
}

.like-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 62px;
  height: 32px;
  margin-left: auto;
  padding: 0 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.like-button svg {
  width: 15px;
  height: 15px;
}

.like-button:hover {
  border-color: #e6a79b;
  color: var(--accent);
}

.like-button.liked {
  border-color: #f0c0b7;
  background: #fff5f2;
  color: var(--accent);
}

.like-button.liked svg {
  fill: currentColor;
}

.empty-state {
  grid-column: 1 / -1;
  padding: 52px 20px;
  text-align: center;
  color: var(--muted);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.empty-state svg {
  width: 30px;
  height: 30px;
  margin: 0 auto 12px;
}

.empty-state h3 {
  margin: 0 0 6px;
  color: var(--ink);
  font-size: 17px;
}

.empty-state p {
  margin: 0;
  font-size: 13px;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.side-section {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.side-section h3 {
  margin: 0 0 14px;
  font-size: 14px;
  letter-spacing: 0;
  color: var(--ink);
}

.side-about p {
  margin: 0 0 14px;
  font-size: 13px;
  color: var(--muted);
}

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

.side-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12px;
  color: var(--ink);
  background: var(--surface-soft);
}

.side-link:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.side-link svg {
  width: 14px;
  height: 14px;
}

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

.tag-chip {
  min-height: 30px;
  padding: 0 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.tag-chip:hover,
.tag-chip.active {
  border-color: var(--brand);
  color: var(--brand);
  background: #eef6f2;
}

.recent-list {
  display: flex;
  flex-direction: column;
}

.recent-item {
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.recent-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.recent-item a {
  display: block;
  margin-bottom: 3px;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.recent-item a:hover {
  color: var(--brand);
}

.recent-item span {
  font-size: 12px;
  color: var(--muted);
}

.article {
  max-width: 880px;
  margin: 0 auto;
  padding: 30px 20px 64px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 22px;
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
}

.back-link:hover {
  color: var(--brand);
}

.back-link svg {
  width: 16px;
  height: 16px;
}

.article-head {
  margin-bottom: 20px;
}

.article-kicker {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.article-kicker .tag-chip {
  cursor: default;
  color: var(--brand);
  border-color: #cfe1da;
  background: #eef6f2;
}

.article-head h1 {
  margin: 0 0 12px;
  font-size: 32px;
  line-height: 1.3;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.article-summary {
  margin: 0;
  font-size: 15px;
  color: var(--muted);
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin-top: 14px;
  color: var(--muted);
  font-size: 13px;
}

.article-meta .meta-item svg {
  width: 16px;
  height: 16px;
}

.article-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.action-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 88px;
  height: 40px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
}

.action-button:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.action-button svg {
  width: 17px;
  height: 17px;
}

.action-button.liked {
  border-color: #f0c0b7;
  background: #fff5f2;
  color: var(--accent);
}

.action-button.liked svg {
  fill: currentColor;
}

.article-body {
  padding: 34px 38px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  font-size: 15px;
  line-height: 1.85;
  overflow-wrap: anywhere;
}

.article-body > :first-child {
  margin-top: 0;
}

.article-body > :last-child {
  margin-bottom: 0;
}

.article-body h1,
.article-body h2,
.article-body h3 {
  margin: 1.6em 0 0.7em;
  line-height: 1.35;
  letter-spacing: 0;
}

.article-body h1 {
  font-size: 26px;
}

.article-body h2 {
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  font-size: 22px;
}

.article-body h3 {
  font-size: 18px;
}

.article-body p {
  margin: 0 0 1.1em;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.1em;
  padding-left: 1.5em;
}

.article-body li {
  margin: 0.3em 0;
}

.article-body blockquote {
  margin: 1.2em 0;
  padding: 12px 18px;
  border-left: 4px solid var(--brand);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--surface-soft);
  color: #43555c;
}

.article-body code {
  padding: 0.18em 0.42em;
  border-radius: 5px;
  background: #e9f0ed;
  color: #174d40;
  font-family: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  font-size: 0.9em;
}

.article-body pre {
  position: relative;
  margin: 1.2em 0;
  padding: 18px;
  overflow-x: auto;
  border-radius: var(--radius);
  background: #17242b;
  color: #e6edf1;
  line-height: 1.6;
}

.article-body pre code {
  padding: 0;
  background: transparent;
  color: inherit;
  font-size: 13px;
}

.article-body .highlight {
  background: #17242b;
}

.article-body table {
  width: 100%;
  margin: 1.2em 0;
  border-collapse: collapse;
  font-size: 14px;
}

.article-body th,
.article-body td {
  padding: 10px 12px;
  border: 1px solid var(--line);
  text-align: left;
}

.article-body th {
  background: var(--surface-soft);
  font-weight: 700;
}

.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
}

.obsidian-embed {
  display: block;
  margin: 1em 0;
  padding: 12px 14px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 13px;
}

.comments {
  margin-top: 26px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.comments-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.comments-head h2 {
  margin: 0;
  font-size: 19px;
  letter-spacing: 0;
}

.comments-head span {
  color: var(--muted);
  font-size: 13px;
}

.comment-form {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr) auto;
  gap: 10px;
  margin-bottom: 22px;
}

.comment-form input,
.comment-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-soft);
  color: var(--ink);
  outline: 0;
}

.comment-form input {
  height: 42px;
  padding: 0 12px;
}

.comment-form textarea {
  min-height: 86px;
  padding: 11px 12px;
  resize: vertical;
}

.comment-form input:focus,
.comment-form textarea:focus {
  border-color: var(--brand);
  background: var(--surface);
}

.comment-form button {
  align-self: stretch;
  min-width: 108px;
  border: 0;
  border-radius: var(--radius);
  background: var(--brand);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
}

.comment-form button:hover {
  background: #175c4b;
}

.comment-list {
  display: flex;
  flex-direction: column;
}

.comment-item {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 12px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.comment-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--brand);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
}

.comment-main {
  min-width: 0;
}

.comment-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 5px;
}

.comment-head strong {
  font-size: 13px;
}

.comment-head span {
  color: var(--muted);
  font-size: 12px;
}

.comment-delete {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  min-height: 28px;
  margin-left: auto;
  padding: 0 9px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.comment-delete:hover {
  border-color: #e6a79b;
  color: var(--accent);
}

.comment-delete:disabled {
  opacity: 0.5;
  cursor: default;
}

.comment-delete svg {
  width: 14px;
  height: 14px;
}

.comment-main p {
  margin: 0;
  font-size: 14px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.no-comments {
  padding: 24px 0 8px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

.footer {
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 22px 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
}

.footer-dot {
  color: #b6c2bf;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  z-index: 60;
  transform: translate(-50%, 16px);
  padding: 10px 16px;
  border-radius: var(--radius);
  background: var(--ink);
  color: #fff;
  font-size: 13px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.24);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.toast.visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .post-list {
    grid-template-columns: 1fr;
  }

  .article-body {
    padding: 26px 22px;
  }
}

@media (max-width: 640px) {
  .topbar-inner {
    padding: 0 14px;
    gap: 10px;
  }

  .brand-name {
    font-size: 15px;
  }

  .search-box {
    width: min(210px, 52vw);
  }

  .hero-inner {
    padding: 30px 18px;
    flex-direction: column-reverse;
    align-items: flex-start;
    gap: 18px;
  }

  .hero-avatar {
    width: 86px;
    height: 86px;
  }

  .hero-copy h1 {
    font-size: 27px;
  }

  .hero-copy p {
    font-size: 14px;
  }

  .hero-stats {
    gap: 14px;
  }

  .layout {
    padding: 22px 14px 48px;
  }

  .feed-head {
    align-items: flex-start;
  }

  .segmented {
    width: 100%;
  }

  .segmented button {
    flex: 1;
  }

  .article {
    padding: 22px 14px 48px;
  }

  .article-head h1 {
    font-size: 26px;
  }

  .article-body {
    padding: 22px 18px;
    font-size: 14px;
  }

  .article-body pre {
    padding: 14px;
  }

  .comments {
    padding: 18px;
  }

  .comment-form {
    grid-template-columns: 1fr;
  }

  .comment-form button {
    height: 42px;
  }
}