@font-face {
  font-family: "LXGW WenKai Screen";
  src: local("LXGW WenKai Screen"), url("/fonts/LXGWWenKaiScreen.ttf") format("truetype");
  font-display: swap;
}

:root {
  --paper: #f5f4ef;
  --panel: #fffdf8;
  --ink: #1e1b16;
  --muted: #68645c;
  --hairline: #ded8ca;
  --hairline-strong: #b9b09f;
  --accent: #225c4d;
  --accent-soft: #e1ede6;
  --rust: #9d5631;
  --shadow: 0 16px 36px rgba(39, 35, 28, 0.09);
  --font-ui: "LXGW WenKai Screen", "Avenir Next", "Hiragino Sans", "PingFang SC", sans-serif;
  --font-title: "LXGW WenKai Screen", "Songti SC", "Noto Serif CJK SC", Georgia, serif;
  --font-reading: "LXGW WenKai Screen", "Iowan Old Style", Georgia, "Songti SC", serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-ui);
  letter-spacing: 0;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.loading-shell {
  display: grid;
  min-height: 100vh;
  place-items: center;
}

.loading-card {
  width: min(460px, calc(100vw - 40px));
  border: 1px solid var(--hairline);
  background: var(--panel);
  padding: 28px;
  box-shadow: var(--shadow);
}

.loading-card h1,
.topline h1,
.focus-card h2 {
  font-family: var(--font-title);
}

.focus-shell {
  min-height: 100vh;
  padding: 28px;
}

.topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin: 0 auto 16px;
  max-width: 1540px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.topline h1 {
  margin: 0;
  font-size: clamp(30px, 3.2vw, 46px);
  line-height: 1.02;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.search {
  width: min(380px, 38vw);
  height: 42px;
  border: 1px solid var(--hairline-strong);
  background: rgba(255, 250, 241, 0.72);
  color: var(--ink);
  padding: 0 13px;
  outline-color: var(--accent);
}

.icon-button {
  display: inline-grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid var(--hairline-strong);
  background: var(--panel);
  color: var(--muted);
}

.icon-button:disabled {
  cursor: default;
  opacity: 0.35;
}

.resume-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 42px;
  border: 1px solid var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
  padding: 0 13px;
}

.mode-badge {
  display: inline-grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--panel);
}

.resume-button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon-button.compact {
  width: 34px;
  height: 34px;
  align-self: center;
}

.icon-button:hover,
.icon-button.on {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}

.icon-button.refresh {
  color: var(--accent);
}

.icon-button svg,
.mode-badge svg,
.primary-action svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.meter-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  max-width: 1540px;
  margin: 0 auto 20px;
  border: 1px solid var(--hairline);
  background: var(--hairline);
}

.meter {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  min-height: 48px;
  background: rgba(255, 250, 241, 0.64);
  padding: 13px 16px;
}

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

.meter strong {
  font-family: var(--font-title);
  font-size: 22px;
  font-weight: 500;
}

.reading-layout {
  display: grid;
  grid-template-columns: 230px minmax(380px, 0.9fr) minmax(420px, 1.05fr);
  gap: 18px;
  max-width: 1540px;
  margin: 0 auto;
  align-items: start;
}

.library-rail,
.paper-list,
.paper-focus {
  min-width: 0;
}

.library-rail {
  display: grid;
  gap: 18px;
  position: sticky;
  top: 18px;
}

.rail-section {
  display: grid;
  gap: 5px;
}

.rail-title {
  margin: 0 0 4px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.rail-section.months {
  max-height: 360px;
  overflow: auto;
  padding-right: 4px;
  scrollbar-gutter: stable;
}

.rail-pill {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  min-height: 38px;
  border: 0;
  border-bottom: 1px solid var(--hairline);
  background: transparent;
  color: var(--ink);
  padding: 7px 2px;
  text-align: left;
}

.rail-pill span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.rail-pill strong {
  color: var(--muted);
  font-size: 12px;
}

.rail-pill.active {
  color: var(--accent);
}

.rail-pill.active strong {
  color: var(--accent);
}

.paper-list {
  display: grid;
  gap: 8px;
}

.list-loading-line {
  position: sticky;
  top: 0;
  z-index: 4;
  height: 3px;
  overflow: hidden;
  background: rgba(34, 92, 77, 0.12);
}

.list-loading-line::after {
  display: block;
  width: 38%;
  height: 100%;
  background: var(--accent);
  content: "";
  animation: loading-track 0.9s ease-in-out infinite;
}

@keyframes loading-track {
  from {
    transform: translateX(-120%);
  }
  to {
    transform: translateX(280%);
  }
}

.pager {
  position: sticky;
  top: 0;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border: 1px solid var(--hairline);
  background: rgba(244, 239, 230, 0.94);
  padding: 8px 10px;
  color: var(--muted);
  font-size: 13px;
  backdrop-filter: blur(6px);
}

.pager.bottom {
  position: static;
}

.pager-actions {
  display: inline-flex;
  gap: 6px;
}

.paper-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 78px;
  gap: 10px;
  border: 1px solid transparent;
  border-bottom-color: var(--hairline);
  background: transparent;
  padding: 9px 0 9px 12px;
  transition: background 120ms ease, border-color 120ms ease;
}

.paper-row.active {
  border-color: var(--hairline-strong);
  background: rgba(255, 250, 241, 0.62);
}

.paper-select {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 4px 12px;
  border: 0;
  background: transparent;
  color: inherit;
  padding: 0;
  text-align: left;
}

.paper-date {
  grid-row: span 2;
  color: var(--rust);
  font-family: Georgia, serif;
  font-size: 14px;
}

.paper-title {
  color: var(--ink);
  font-weight: 600;
  line-height: 1.32;
  text-wrap: pretty;
}

.paper-meta {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}

.row-actions {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
}

.skeleton-row {
  pointer-events: none;
}

.skeleton-date,
.skeleton-line,
.skeleton-icon {
  display: block;
  overflow: hidden;
  border-radius: 2px;
  background: linear-gradient(90deg, rgba(217, 204, 186, 0.45), rgba(255, 250, 241, 0.9), rgba(217, 204, 186, 0.45));
  background-size: 220% 100%;
  animation: skeleton-sweep 1.1s ease-in-out infinite;
}

.skeleton-date {
  grid-row: span 2;
  width: 70px;
  height: 16px;
  margin-top: 1px;
}

.skeleton-line.title {
  width: min(100%, 360px);
  height: 20px;
}

.skeleton-line.meta {
  width: min(72%, 260px);
  height: 13px;
}

.skeleton-icon {
  width: 34px;
  height: 34px;
  border: 1px solid rgba(189, 173, 150, 0.55);
}

@keyframes skeleton-sweep {
  from {
    background-position: 100% 0;
  }
  to {
    background-position: -120% 0;
  }
}

.focus-card {
  position: sticky;
  top: 18px;
  border: 1px solid var(--hairline-strong);
  background: var(--panel);
  box-shadow: var(--shadow);
  padding: 22px 24px;
}

.focus-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: start;
}

.focus-card h2 {
  margin: 0;
  font-size: clamp(22px, 2vw, 30px);
  line-height: 1.16;
  text-wrap: pretty;
}

.focus-tools {
  display: flex;
  gap: 8px;
}

.focus-meta {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 7px 12px;
  margin: 20px 0;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding: 13px 0;
  font-size: 13px;
}

.focus-meta dt {
  color: var(--muted);
}

.focus-meta dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.abstract-block p:last-child {
  margin: 0;
  color: #28241d;
  max-width: 74ch;
  font-family: var(--font-reading);
  font-size: 16.5px;
  line-height: 1.78;
  text-wrap: pretty;
}

.focus-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 18px 0 22px;
}

.primary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 44px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--panel);
  padding: 0 16px;
}

.primary-action:hover {
  background: #17493d;
}

.empty-state {
  border: 1px dashed var(--hairline-strong);
  background: rgba(255, 250, 241, 0.55);
  color: var(--muted);
  padding: 20px;
}

.toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 20;
  border: 1px solid var(--hairline-strong);
  background: var(--ink);
  color: var(--panel);
  padding: 10px 12px;
  box-shadow: var(--shadow);
}

@media (max-width: 1180px) {
  .reading-layout {
    grid-template-columns: 190px minmax(320px, 1fr);
  }

  .paper-focus {
    grid-column: 2;
  }
}

@media (max-width: 820px) {
  .focus-shell {
    padding: 18px;
  }

  .topline,
  .top-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .search {
    width: 100%;
  }

  .meter-strip,
  .reading-layout {
    grid-template-columns: 1fr;
  }

  .library-rail,
  .focus-card {
    position: static;
  }

  .library-rail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .paper-focus {
    grid-column: auto;
  }
}

@media (max-width: 540px) {
  .meter-strip,
  .library-rail {
    grid-template-columns: 1fr;
  }

  .paper-select {
    grid-template-columns: 1fr;
  }

  .paper-date {
    grid-row: auto;
  }
}