:root {
  --ink: #1c2a33;
  --ink-soft: #3d4f5c;
  --fog: #e7eef2;
  --paper: #f4f7f8;
  --jade: #2f6f66;
  --jade-deep: #1f4f49;
  --line: rgba(28, 42, 51, 0.12);
  --shadow: rgba(28, 42, 51, 0.08);
  --font-display: "LXGW WenKai", "霞鹜文楷", "Songti SC", "STSong", serif;
  --font-body: "LXGW WenKai", "霞鹜文楷", "Songti SC", "STSong", serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.75;
  background:
    radial-gradient(1200px 700px at 12% -10%, #d9e8e4 0%, transparent 55%),
    radial-gradient(900px 600px at 100% 8%, #d3dde6 0%, transparent 50%),
    linear-gradient(165deg, #eef4f6 0%, #e3ebef 45%, #dce6e4 100%);
  overflow-x: hidden;
}

.atmosphere {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.mist {
  position: absolute;
  width: 55vw;
  height: 55vw;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.35;
  animation: drift 18s ease-in-out infinite;
}

.mist-a {
  top: -10%;
  left: -8%;
  background: #b8d0c8;
}

.mist-b {
  right: -12%;
  bottom: 10%;
  background: #b4c4d4;
  animation-delay: -7s;
  animation-duration: 22s;
}

.grain {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.top,
main,
.site-footer {
  position: relative;
  z-index: 1;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.25rem 6vw 0;
}

.mark {
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.12em;
  color: var(--ink);
  text-decoration: none;
  opacity: 0;
  transform: translateY(-8px);
  animation: rise 0.9s ease forwards 0.15s;
  white-space: nowrap;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.25rem;
  opacity: 0;
  transform: translateY(-8px);
  animation: rise 0.9s ease forwards 0.28s;
}

.nav a {
  color: var(--ink-soft);
  text-decoration: none;
  letter-spacing: 0.08em;
  font-size: 0.95rem;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.nav a:hover,
.nav a:focus-visible,
.nav a[aria-current="page"] {
  color: var(--jade-deep);
  border-bottom-color: rgba(47, 111, 102, 0.45);
}

.hero {
  min-height: calc(100vh - 4rem);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: center;
  padding: 4vh 6vw 8vh;
}

.hero-copy {
  max-width: 34rem;
}

.brand {
  margin: 0 0 1.25rem;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.15;
  letter-spacing: 0.08em;
  color: var(--ink);
  opacity: 0;
  transform: translateY(18px);
  animation: rise 1s ease forwards 0.25s;
}

.headline {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.4vw, 1.85rem);
  font-weight: 400;
  line-height: 1.45;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  opacity: 0;
  transform: translateY(18px);
  animation: rise 1s ease forwards 0.45s;
}

.lead {
  margin: 0 0 2rem;
  max-width: 28rem;
  font-size: 1.05rem;
  color: var(--ink-soft);
  opacity: 0;
  transform: translateY(18px);
  animation: rise 1s ease forwards 0.6s;
}

.cta-row {
  opacity: 0;
  transform: translateY(18px);
  animation: rise 1s ease forwards 0.75s;
}

.cta {
  display: inline-block;
  padding: 0.85rem 1.6rem;
  color: var(--paper);
  background: var(--jade);
  text-decoration: none;
  letter-spacing: 0.12em;
  border-radius: 2px;
  transition: background 0.25s ease, transform 0.25s ease;
}

.cta:hover,
.cta:focus-visible {
  background: var(--jade-deep);
  transform: translateY(-1px);
}

.cta.ghost {
  margin-left: 0.85rem;
  color: var(--jade-deep);
  background: transparent;
  border: 1px solid rgba(47, 111, 102, 0.35);
}

.cta.ghost:hover,
.cta.ghost:focus-visible {
  background: rgba(47, 111, 102, 0.08);
  transform: translateY(-1px);
}

.kicker {
  margin: 0 0 0.65rem;
  font-size: 0.88rem;
  letter-spacing: 0.22em;
  color: var(--jade);
  opacity: 0;
  transform: translateY(18px);
  animation: rise 1s ease forwards 0.12s;
}

.preview-card {
  width: min(320px, 88%);
  padding: 1.5rem 1.45rem 1.25rem;
  background: linear-gradient(160deg, #fbfcfd 0%, #eef3f5 100%);
  border: 1px solid var(--line);
  box-shadow: 0 18px 40px var(--shadow);
  transform: rotate(1.5deg);
}

.preview-group {
  margin: 0 0 0.85rem;
  font-size: 0.9rem;
  letter-spacing: 0.16em;
  color: var(--jade);
}

.preview-name {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: 1.55rem;
  letter-spacing: 0.12em;
}

.preview-stats {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.75rem;
  color: var(--ink-soft);
}

.preview-stats .remain {
  color: var(--jade-deep);
  letter-spacing: 0.04em;
}

.preview-time,
.preview-auto {
  margin: 0 0 0.4rem;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

.preview-auto {
  margin-bottom: 1.1rem;
  color: var(--jade);
}

.preview-actions {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  border-top: 1px solid var(--line);
  padding-top: 0.85rem;
  text-align: center;
  letter-spacing: 0.12em;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.search-panel {
  margin-top: 1.75rem;
  padding: 1.35rem 1.4rem 1.4rem;
  background: linear-gradient(160deg, #fbfcfd 0%, #eef3f5 100%);
  border: 1px solid var(--line);
  box-shadow: 0 12px 28px var(--shadow);
}

.search-label {
  margin: 0 0 0.35rem;
  font-size: 0.88rem;
  letter-spacing: 0.18em;
  color: var(--jade);
}

.search-name {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2rem);
  letter-spacing: 0.16em;
}

.copy-name {
  padding: 0.7rem 1.25rem;
  color: var(--paper);
  background: var(--jade);
  border: 0;
  border-radius: 2px;
  font: inherit;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: background 0.25s ease, transform 0.25s ease;
}

.copy-name:hover,
.copy-name:focus-visible {
  background: var(--jade-deep);
  transform: translateY(-1px);
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 320px;
  opacity: 0;
  transform: translateY(24px) scale(0.98);
  animation: rise 1.15s ease forwards 0.55s;
}

.desk {
  position: relative;
  width: min(420px, 86%);
  aspect-ratio: 5 / 4;
}

.page {
  position: absolute;
  inset: 12% 10% 18% 14%;
  background: linear-gradient(145deg, #fbfcfd 0%, #eef3f5 100%);
  border: 1px solid var(--line);
  box-shadow: 0 18px 40px var(--shadow);
}

.page-back {
  transform: rotate(-4deg) translate(-10px, 8px);
  background: #e8eef1;
}

.page-front {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  padding: 14% 12%;
  transform: rotate(2deg);
}

.rule {
  display: block;
  height: 2px;
  width: 78%;
  background: rgba(47, 111, 102, 0.28);
}

.rule.short {
  width: 48%;
}

.ink-dot {
  width: 10px;
  height: 10px;
  margin-top: 0.4rem;
  border-radius: 50%;
  background: var(--jade);
  animation: pulse 3.6s ease-in-out infinite;
}

.pen {
  position: absolute;
  right: 6%;
  bottom: 8%;
  width: 58%;
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(90deg, #24343d 0%, #3b5360 55%, #c9a66b 56%, #e5d2a8 100%);
  transform: rotate(-28deg);
  box-shadow: 0 8px 16px var(--shadow);
}

.block {
  max-width: 42rem;
  margin: 0 auto;
  padding: 0 6vw 9vh;
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.block.in-view {
  opacity: 1;
  transform: none;
}

.eyebrow {
  margin: 0 0 0.65rem;
  font-size: 0.88rem;
  letter-spacing: 0.22em;
  color: var(--jade);
}

.block h2 {
  margin: 0 0 1.1rem;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 2.6vw, 1.95rem);
  font-weight: 400;
  letter-spacing: 0.1em;
}

.section-lead,
.prose {
  margin: 0 0 1.1rem;
  color: var(--ink-soft);
}

.section-lead {
  margin-bottom: 1.75rem;
}

.topic-list,
.note-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.topic-list li {
  display: grid;
  grid-template-columns: minmax(7rem, 9.5rem) 1fr;
  gap: 1rem 1.5rem;
  padding: 1.15rem 0;
  border-top: 1px solid var(--line);
}

.topic-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.topic-name {
  letter-spacing: 0.08em;
  color: var(--ink);
}

.topic-desc {
  color: var(--ink-soft);
}

.note-list li {
  padding: 1.35rem 0 1.5rem;
  border-top: 1px solid var(--line);
}

.note-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.note-list time {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  color: var(--jade);
}

.note-list h3 {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 400;
  letter-spacing: 0.06em;
}

.note-list h3 a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.note-list h3 a:hover,
.note-list h3 a:focus-visible {
  color: var(--jade-deep);
  border-bottom-color: rgba(47, 111, 102, 0.45);
}

.note-list p {
  margin: 0;
  color: var(--ink-soft);
}

.quote {
  margin: 2rem 0 0;
  padding: 1.25rem 0 1.25rem 1.25rem;
  border-left: 2px solid rgba(47, 111, 102, 0.45);
}

.quote p {
  margin: 0;
  font-size: 1.15rem;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.article {
  max-width: 42rem;
  margin: 0 auto;
  padding: 8vh 6vw 11vh;
}

.article h1 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.15rem);
  font-weight: 400;
  letter-spacing: 0.1em;
  line-height: 1.4;
}

.article-meta {
  margin: 0 0 2.1rem;
  font-size: 0.92rem;
  letter-spacing: 0.12em;
  color: var(--jade);
}

.article-body p {
  margin: 0 0 1.2rem;
  color: var(--ink-soft);
}

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

.article-body img,
.preview-article img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 0.35rem 0;
  border: 1px solid var(--line);
  background: #fbfcfd;
}

.article-body p.article-figure {
  margin: 1.35rem 0;
}

.article-back {
  margin: 2.6rem 0 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.article-back a {
  color: var(--jade-deep);
  text-decoration: none;
  letter-spacing: 0.08em;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.article-back a:hover,
.article-back a:focus-visible {
  border-bottom-color: rgba(47, 111, 102, 0.45);
}

.admin-wrap {
  max-width: 42rem;
  margin: 0 auto;
  padding: 6vh 6vw 10vh;
}

.admin-wrap.is-wide {
  max-width: 88rem;
}

.admin-wrap h1 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 2.6vw, 1.95rem);
  font-weight: 400;
  letter-spacing: 0.1em;
}

.admin-card {
  padding: 0;
}

.admin-toolbar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.admin-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.editor-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 1.75rem;
  align-items: start;
}

.editor-form {
  min-width: 0;
}

.field {
  display: flex;
  flex-direction: column;
  width: 100%;
  margin: 0 0 1.15rem;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 10.5rem;
  gap: 1rem;
}

.field span {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  color: var(--jade);
}

.field-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.4rem;
}

.field-head span {
  margin-bottom: 0;
}

.btn-text {
  padding: 0;
  border: 0;
  background: none;
  color: var(--jade-deep);
  font: inherit;
  letter-spacing: 0.08em;
  cursor: pointer;
}

.btn-text:hover,
.btn-text:focus-visible {
  text-decoration: underline;
}

.field-hint {
  margin-top: 0.4rem;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

.field input,
.field textarea,
.field select {
  display: block;
  width: 100%;
  max-width: 100%;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: #fbfcfd;
  color: var(--ink);
  font: inherit;
  line-height: 1.7;
}

.field textarea.excerpt-input {
  min-height: 4.5rem;
  resize: vertical;
}

.field textarea.body-input {
  min-height: 28rem;
  line-height: 1.85;
  resize: vertical;
}

.editor-preview {
  position: sticky;
  top: 1.25rem;
  min-width: 0;
  max-height: calc(100vh - 2.5rem);
  overflow: auto;
  padding: 1.35rem 1.45rem 1.6rem;
  background: linear-gradient(160deg, #fbfcfd 0%, #eef3f5 100%);
  border: 1px solid var(--line);
  box-shadow: 0 12px 28px var(--shadow);
}

.preview-article h2 {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  line-height: 1.4;
}

.preview-excerpt {
  margin: 0 0 1rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px dashed var(--line);
  font-size: 0.95rem;
  color: var(--ink-soft);
}

.preview-empty {
  opacity: 0.55;
}

.admin-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.admin-list li {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem 0;
  border-top: 1px solid var(--line);
}

.admin-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.list-main {
  min-width: 0;
  flex: 1;
}

.admin-list time {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.88rem;
  letter-spacing: 0.1em;
  color: var(--jade);
}

.admin-list strong {
  display: inline-block;
  margin-right: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.06em;
}

.admin-list .badge {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.list-excerpt {
  margin: 0.45rem 0 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.list-ops {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: 0.55rem;
}

.list-link,
.admin-list button {
  padding: 0.45rem 0.9rem;
  border: 1px solid rgba(47, 111, 102, 0.35);
  background: transparent;
  color: var(--jade-deep);
  font: inherit;
  letter-spacing: 0.08em;
  text-decoration: none;
  cursor: pointer;
}

.list-muted {
  padding: 0.45rem 0.4rem;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.list-link:hover,
.list-link:focus-visible,
.admin-list button:hover,
.admin-list button:focus-visible {
  background: rgba(47, 111, 102, 0.08);
}

.admin-msg {
  margin: 1rem 0 0;
  color: var(--jade-deep);
}

.admin-msg.error {
  color: #8a3b3b;
}

.cta.danger {
  background: transparent;
  color: #8a3b3b;
  border: 1px solid rgba(138, 59, 59, 0.35);
}

.cta.danger:hover,
.cta.danger:focus-visible {
  background: rgba(138, 59, 59, 0.08);
}

.closing {
  padding-bottom: 11vh;
}

.site-footer {
  padding: 2.5rem 6vw 2rem;
  border-top: 1px solid var(--line);
  text-align: center;
}

.site-name {
  margin: 0 0 0.35rem;
  letter-spacing: 0.18em;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

.footer-copy {
  margin: 0 0 0.75rem;
  font-size: 0.88rem;
  color: var(--ink-soft);
  opacity: 0.85;
}

.footer-copy a {
  color: var(--jade-deep);
  text-decoration: none;
  letter-spacing: 0.04em;
}

.footer-copy a:hover,
.footer-copy a:focus-visible {
  text-decoration: underline;
}

.beian {
  margin: 0;
  font-size: 0.85rem;
}

.beian a {
  color: var(--ink-soft);
  text-decoration: none;
  letter-spacing: 0.04em;
}

.beian a:hover,
.beian a:focus-visible {
  color: var(--jade-deep);
  text-decoration: underline;
}

@keyframes rise {
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes drift {
  0%,
  100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(24px, -18px);
  }
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.85;
  }
  50% {
    transform: scale(1.25);
    opacity: 1;
  }
}

@media (max-width: 860px) {
  .top {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 6vh;
    padding-bottom: 4vh;
  }

  .hero-visual {
    order: -1;
    min-height: 240px;
  }

  .cta.ghost {
    margin-left: 0;
    margin-top: 0.75rem;
  }

  .cta-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
  }

  .desk {
    width: min(300px, 78%);
  }

  .brand {
    letter-spacing: 0.06em;
  }

  .topic-list li {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

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

  .admin-wrap.is-wide {
    max-width: 42rem;
  }

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

  .editor-preview {
    position: static;
    max-height: none;
  }

  body {
    font-size: 17px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mist,
  .ink-dot,
  .mark,
  .nav,
  .brand,
  .headline,
  .lead,
  .cta-row,
  .hero-visual,
  .kicker {
    animation: none;
    opacity: 1;
    transform: none;
  }

  .block {
    opacity: 1;
    transform: none;
    transition: none;
  }

  html {
    scroll-behavior: auto;
  }
}