/* ============================================================
   深读 DeepRead — 高保真原型样式
   ============================================================ */

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

html,
body {
  height: 100%;
  margin: 0;
}

body {
  background: #16171b;
  background-image: radial-gradient(
      1200px 700px at 20% -10%,
      #23262c 0%,
      transparent 60%
    ),
    radial-gradient(900px 600px at 100% 110%, #1e2126 0%, transparent 55%);
  color: #a8a49c;
  font-family: var(--font-ui);
  -webkit-font-smoothing: antialiased;
}

/* ---------- 工作台布局 ---------- */

.workbench {
  display: grid;
  grid-template-columns: 232px minmax(0, 1fr) 300px;
  gap: 28px;
  height: 100vh;
  padding: 24px 28px;
}

@media (max-width: 1180px) {
  .workbench {
    grid-template-columns: 200px minmax(0, 1fr);
  }
  .docs {
    display: none;
  }
}

/* ---------- 左侧导航 ---------- */

.rail {
  overflow-y: auto;
  padding-right: 6px;
}

.rail__brand {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 4px;
}

.rail__logo {
  font-family: var(--font-serif);
  font-size: 26px;
  letter-spacing: 4px;
  color: #f0ece3;
}

.rail__sub {
  font-size: 11px;
  letter-spacing: 1px;
  color: #6a665f;
}

.rail__tag {
  font-size: 11.5px;
  line-height: 1.7;
  color: #6e6a62;
  margin: 10px 0 22px;
  padding-left: 1px;
}

.rail__group {
  font-size: 10.5px;
  letter-spacing: 2px;
  color: #55514a;
  margin: 20px 0 8px;
  padding-left: 10px;
}

.rail__item {
  display: flex;
  align-items: center;
  gap: 9px;
  width: 100%;
  padding: 8px 10px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: #8d8880;
  font-family: inherit;
  font-size: 12.5px;
  text-align: left;
  cursor: pointer;
  transition: background var(--t-fast) var(--ease),
    color var(--t-fast) var(--ease);
}

.rail__item:hover {
  background: rgba(255, 255, 255, 0.04);
  color: #cdc8c0;
}

.rail__item.is-active {
  background: rgba(176, 74, 63, 0.14);
  color: #e7ded4;
}

.rail__item.is-active .rail__idx {
  color: var(--night-cinnabar);
}

.rail__idx {
  font-family: var(--font-mono);
  font-size: 10px;
  color: #57534c;
  width: 22px;
  flex: none;
}

/* ---------- 设备 ---------- */

.viewport {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  min-width: 0;
}

.device {
  position: relative;
  width: 390px;
  height: 844px;
  flex: none;
  border-radius: 52px;
  padding: 11px;
  background: linear-gradient(160deg, #3a3d44, #17181c 40%, #2b2e34);
  box-shadow: 0 40px 80px -20px rgba(0, 0, 0, 0.75),
    0 0 0 1px rgba(255, 255, 255, 0.06), inset 0 0 0 1px rgba(0, 0, 0, 0.6);
}

@media (max-height: 900px) {
  .device {
    transform: scale(0.86);
    transform-origin: center;
    margin: -60px 0;
  }
}

.device__screen {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 42px;
  overflow: hidden;
  background: var(--paper);
  isolation: isolate;
}

/* 灵动岛 */
.island {
  position: absolute;
  top: 11px;
  left: 50%;
  transform: translateX(-50%);
  width: 108px;
  height: 30px;
  border-radius: 16px;
  background: #0a0b0d;
  z-index: 90;
  pointer-events: none;
}

/* 状态栏 */
.statusbar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 30px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.2px;
  color: var(--ink);
  z-index: 80;
  pointer-events: none;
  transition: color var(--t-base) var(--ease);
}

.device[data-bar="light"] .statusbar {
  color: #ded9d0;
}

.statusbar__right {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
}

.bat {
  width: 22px;
  height: 11px;
  border: 1.2px solid currentColor;
  border-radius: 3px;
  opacity: 0.85;
  position: relative;
}
.bat::after {
  content: "";
  position: absolute;
  inset: 1.5px;
  right: 5px;
  background: currentColor;
  border-radius: 1px;
}

/* Home 指示条 */
.homebar {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 134px;
  height: 5px;
  border-radius: 3px;
  background: var(--ink);
  opacity: 0.25;
  z-index: 85;
  pointer-events: none;
}
.device[data-bar="light"] .homebar {
  background: #ded9d0;
  opacity: 0.4;
}

/* ---------- 屏幕容器 ---------- */

.screens {
  position: absolute;
  inset: 0;
}

.screen {
  position: absolute;
  inset: 0;
  overflow-y: auto;
  overflow-x: hidden;
  background: var(--paper);
  background-image: var(--noise);
  background-blend-mode: multiply;
  color: var(--ink);
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity var(--t-base) var(--ease),
    transform var(--t-base) var(--ease), visibility 0s linear var(--t-base);
  scrollbar-width: none;
}
.screen::-webkit-scrollbar {
  display: none;
}

.screen.is-active {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition: opacity var(--t-base) var(--ease),
    transform var(--t-base) var(--ease), visibility 0s;
}

.screen__pad {
  padding: 60px 24px 120px;
}

/* ---------- 通用组件 ---------- */

.kicker {
  font-size: 12.5px;
  color: var(--ink-40);
  letter-spacing: 0.6px;
}

.h1 {
  font-size: 28px;
  line-height: 1.28;
  font-weight: 600;
  letter-spacing: 0.4px;
  margin: 4px 0 0;
}

.h2 {
  font-size: 21px;
  line-height: 1.35;
  font-weight: 500;
  margin: 0;
}

.h3 {
  font-size: 16.5px;
  font-weight: 500;
  margin: 0;
  letter-spacing: 0.3px;
}

.body {
  font-size: 15px;
  line-height: 1.62;
  color: var(--ink);
  margin: 0;
}

.small {
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-60);
  margin: 0;
}

.tiny {
  font-size: 11.5px;
  line-height: 1.55;
  color: var(--ink-40);
  margin: 0;
}

.rule {
  height: 0;
  border-top: 0.5px solid var(--line);
  margin: 26px 0;
}

.row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.more {
  font-size: 12.5px;
  color: var(--ink-40);
  background: none;
  border: 0;
  font-family: inherit;
  cursor: pointer;
  padding: 0;
}

/* 墨点：砚的化身 */
.inkdot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--azurite);
  flex: none;
  display: inline-block;
  animation: breathe 2400ms ease-in-out infinite;
}

@keyframes breathe {
  0%,
  100% {
    opacity: 0.45;
    transform: scale(0.9);
  }
  50% {
    opacity: 1;
    transform: scale(1.1);
  }
}

.inkdot--lg {
  width: 11px;
  height: 11px;
}

/* AI 推荐理由 */
.reason {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-top: 14px;
}

.reason .inkdot {
  margin-top: 7px;
}

.reason p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink);
  font-family: var(--font-serif);
}

.reason em {
  font-style: normal;
  color: var(--cinnabar);
}

/* 按钮 */
.btn {
  height: 44px;
  padding: 0 20px;
  border-radius: var(--r-btn);
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  font-family: inherit;
  font-size: 14.5px;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: background var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

.btn:active {
  transform: scale(0.985);
}

.btn--outline {
  border-color: rgba(176, 74, 63, 0.45);
  color: var(--cinnabar);
}
.btn--outline:hover {
  background: var(--cinnabar-soft);
}

.btn--primary {
  background: var(--cinnabar);
  border-color: var(--cinnabar);
  color: #fbf7f1;
  width: 100%;
}
.btn--primary:hover {
  background: #9d4038;
}

.btn--sm {
  height: 34px;
  padding: 0 14px;
  font-size: 12.5px;
  border-radius: 7px;
}

.link {
  background: none;
  border: 0;
  padding: 0;
  font-family: inherit;
  font-size: 13.5px;
  color: var(--ink-60);
  cursor: pointer;
  border-bottom: 0.5px solid var(--ink-20);
  padding-bottom: 2px;
}
.link:hover {
  color: var(--cinnabar);
  border-color: var(--cinnabar);
}

/* 头像 */
.avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: linear-gradient(140deg, #cdbfa6, #8e8272);
  border: 0.5px solid rgba(0, 0, 0, 0.12);
  flex: none;
}

/* ---------- 书籍封面与书脊 ---------- */

.cover {
  position: relative;
  border-radius: 3px 6px 6px 3px;
  overflow: hidden;
  color: #f4efe6;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 14px 12px;
  font-family: var(--font-serif);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1);
  flex: none;
}

.cover::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 7px;
  background: linear-gradient(
    90deg,
    rgba(0, 0, 0, 0.35),
    rgba(255, 255, 255, 0.13) 60%,
    rgba(0, 0, 0, 0.12)
  );
}

.cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--noise);
  opacity: 0.12;
  mix-blend-mode: overlay;
  pointer-events: none;
}

.cover__t {
  font-size: 19px;
  line-height: 1.25;
  letter-spacing: 2px;
  writing-mode: vertical-rl;
  align-self: flex-start;
  margin-left: 6px;
}

.cover__a {
  font-size: 9.5px;
  letter-spacing: 1px;
  opacity: 0.72;
  align-self: flex-end;
}

.cover--hero {
  width: 168px;
  height: 246px;
  transform: rotate(-2.5deg);
}

.cover--md {
  width: 76px;
  height: 112px;
}

.cover--sm {
  width: 52px;
  height: 76px;
  padding: 8px 6px;
}
.cover--sm .cover__t {
  font-size: 12px;
  letter-spacing: 1px;
}
.cover--sm .cover__a {
  display: none;
}

/* 书脊 */
.spinewall {
  display: flex;
  gap: 3px;
  overflow-x: auto;
  padding: 14px 0 4px;
  scrollbar-width: none;
  align-items: flex-end;
}
.spinewall::-webkit-scrollbar {
  display: none;
}

.spine {
  position: relative;
  width: 34px;
  border: 0;
  border-radius: 2px 2px 1px 1px;
  padding: 12px 0 10px;
  color: #f2ece1;
  font-family: var(--font-serif);
  font-size: 12.5px;
  letter-spacing: 2.5px;
  writing-mode: vertical-rl;
  text-align: start;
  display: flex;
  justify-content: flex-start;
  cursor: pointer;
  flex: none;
  transition: transform var(--t-base) var(--ease),
    filter var(--t-base) var(--ease);
  box-shadow: inset -4px 0 8px -4px rgba(0, 0, 0, 0.5),
    inset 4px 0 6px -4px rgba(255, 255, 255, 0.18);
}

.spine::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--noise);
  opacity: 0.14;
  mix-blend-mode: overlay;
  border-radius: inherit;
}

.spine:hover {
  transform: translateY(-9px);
  filter: brightness(1.08);
}

.shelfboard {
  height: 7px;
  border-radius: 2px;
  background: linear-gradient(180deg, #cbbda3, #9d8f77);
  box-shadow: 0 3px 7px -2px rgba(0, 0, 0, 0.28);
  margin-bottom: 16px;
}

/* ============================================================
   发现 · AI 荐书信息流（交互按备忘录；视觉保持纸与墨）
   ============================================================ */

.home-top {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  height: 104px;
  padding: 52px 24px 10px;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(14px) saturate(1.1);
  border-bottom: 0.5px solid transparent;
}

.home-top__greet {
  margin: 1px 0 0;
  font-size: 14px;
  color: var(--ink);
  letter-spacing: 0.3px;
}

.home-feed {
  padding: 8px 0 20px;
}

.home-book {
  position: relative;
  padding: 18px 0 28px;
  border-bottom: 0.5px solid var(--line);
}
.home-book:last-child {
  border-bottom: 0;
}

/* 图书信息区：与媒资分离，展开不挤压卡片布局宽度 */
.home-info {
  padding: 0 24px;
  min-height: 118px;
}

.home-tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 1.5px;
  color: var(--cinnabar);
  border: 0.5px solid rgba(176, 74, 63, 0.35);
  border-radius: 4px;
  padding: 2px 8px;
  margin-bottom: 10px;
}

.home-info__title {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 500;
  letter-spacing: 1.5px;
  margin: 0 0 6px;
}

.home-info__by {
  font-size: 12.5px;
  color: var(--ink-60);
  margin: 0 0 10px;
  letter-spacing: 0.3px;
}

.home-blurb {
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-60);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.home-blurb.is-open {
  display: block;
  -webkit-line-clamp: unset;
  overflow: visible;
}

.home-expand {
  background: none;
  border: 0;
  padding: 0;
  margin-top: 6px;
  font-family: inherit;
  font-size: 12.5px;
  color: var(--cinnabar);
  letter-spacing: 0.5px;
  cursor: pointer;
}

/* 媒资轨：居中 snap + peek + 非选中缩小 */
.home-track-wrap {
  margin-top: 16px;
  position: relative;
}

.home-track {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding-inline: calc(50% - 120px);
  -webkit-overflow-scrolling: touch;
  padding: 10px calc(50% - 120px);
  scrollbar-width: none;
  cursor: grab;
}
.home-track::-webkit-scrollbar {
  display: none;
}
.home-track.is-dragging {
  cursor: grabbing;
  scroll-behavior: auto;
}

.home-slide {
  position: relative;
  flex: none;
  width: 240px;
  height: 360px;
  border-radius: 12px;
  overflow: hidden;
  scroll-snap-align: center;
  border: 0.5px solid var(--line);
  background: var(--paper-2);
  transform: scale(0.85);
  opacity: 0.55;
  transition: transform 320ms var(--ease), opacity 320ms var(--ease);
  isolation: isolate;
}
.home-slide.is-active {
  transform: scale(1);
  opacity: 1;
}

.home-slide--cover {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 20px 16px;
  color: #f4efe6;
  font-family: var(--font-serif);
  cursor: pointer;
  box-shadow: inset 8px 0 14px -10px rgba(0, 0, 0, 0.45);
}
.home-slide--cover::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--noise);
  opacity: 0.14;
  mix-blend-mode: overlay;
  pointer-events: none;
}
.home-slide__t {
  font-size: 28px;
  letter-spacing: 4px;
  writing-mode: vertical-rl;
  position: relative;
  z-index: 1;
}
.home-slide__a {
  font-size: 11px;
  letter-spacing: 2px;
  opacity: 0.72;
  align-self: flex-end;
  position: relative;
  z-index: 1;
}
.home-slide__badge {
  position: absolute;
  top: 12px;
  right: 12px;
  font-size: 10.5px;
  letter-spacing: 1px;
  color: rgba(244, 239, 230, 0.78);
  border: 0.5px solid rgba(244, 239, 230, 0.28);
  border-radius: 10px;
  padding: 3px 8px;
  z-index: 1;
  font-family: var(--font-ui);
}

.home-slide--video {
  cursor: pointer;
}
.home-slide__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}
.home-slide--video::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    transparent 48%,
    rgba(20, 22, 26, 0.7) 100%
  );
  pointer-events: none;
}
.home-slide video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 420ms var(--ease);
  z-index: 1;
}
.home-slide video.is-ready {
  opacity: 1;
}
.home-slide__play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 0;
  background: rgba(247, 244, 237, 0.92);
  color: var(--ink);
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-left: 3px;
  z-index: 3;
  pointer-events: none;
  box-shadow: 0 8px 22px -8px rgba(0, 0, 0, 0.45);
  transition: opacity 280ms var(--ease);
}
.home-slide.is-playing .home-slide__play {
  opacity: 0;
}
.home-slide__vmeta {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 14px;
  z-index: 3;
  color: #f4efe6;
}
.home-slide__vmeta strong {
  display: block;
  font-size: 13.5px;
  font-weight: 500;
  margin-bottom: 3px;
}
.home-slide__vmeta span {
  font-size: 11px;
  opacity: 0.72;
}
.home-slide__dur {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 3;
  font-size: 11px;
  color: #f4efe6;
  background: rgba(20, 22, 26, 0.55);
  backdrop-filter: blur(6px);
  border-radius: 8px;
  padding: 3px 8px;
  font-family: var(--font-mono);
}

.home-dots {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin: 12px 0 0;
  min-height: 8px;
}
.home-dots i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--ink-20);
  transition: all var(--t-fast) var(--ease);
}
.home-dots i.is-on {
  background: var(--cinnabar);
  width: 14px;
  border-radius: 3px;
}

.home-reason {
  padding: 16px 24px 0;
}
.home-acts {
  display: flex;
  gap: 11px;
  padding: 14px 24px 0;
}

.home-more {
  padding: 8px 24px 120px;
}

/* ---------- 全屏播放页 ---------- */

.player {
  position: absolute;
  inset: 0;
  z-index: 100;
  background: #14161a;
  color: #d6d2c8;
  overflow: hidden;
  animation: fadeUp 280ms var(--ease) both;
  touch-action: pan-y;
}
.player[hidden] {
  display: none;
}

.player__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: blur(28px) saturate(1.1);
  transform: scale(1.12);
  opacity: 0.45;
  pointer-events: none;
}
.player__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(20, 22, 26, 0.55) 0%,
    rgba(20, 22, 26, 0.2) 40%,
    rgba(20, 22, 26, 0.85) 100%
  );
}

.player__back {
  position: absolute;
  top: 54px;
  left: 16px;
  z-index: 5;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 0.5px solid rgba(214, 210, 200, 0.22);
  background: rgba(247, 244, 237, 0.12);
  backdrop-filter: blur(10px);
  color: #eae5dc;
  font-size: 16px;
  cursor: pointer;
}

.player__info {
  position: absolute;
  top: 100px;
  left: 18px;
  right: 86px;
  z-index: 4;
}

.player__live {
  display: inline-block;
  font-size: 10.5px;
  letter-spacing: 1.5px;
  color: #c9a227;
  border: 0.5px solid rgba(201, 162, 39, 0.4);
  border-radius: 4px;
  padding: 2px 7px;
  margin-bottom: 10px;
}

.player__title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 1px;
  margin: 0 0 6px;
  color: #f0ece3;
}

.player__meta {
  font-size: 12px;
  color: rgba(214, 210, 200, 0.65);
  margin: 0 0 10px;
}

.player__blurb {
  font-family: var(--font-serif);
  font-size: 13px;
  line-height: 1.65;
  color: rgba(214, 210, 200, 0.78);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.player__side {
  position: absolute;
  right: 12px;
  bottom: 140px;
  z-index: 5;
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
}

.player__act {
  background: none;
  border: 0;
  color: #eae5dc;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  font-family: inherit;
  padding: 0;
}
.player__act span {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(247, 244, 237, 0.12);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}
.player__act small {
  font-size: 10.5px;
  color: rgba(214, 210, 200, 0.7);
}

.player__ai {
  background: none;
  border: 0;
  color: #7ba3c9;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  font-family: inherit;
  padding: 0;
  margin-top: 4px;
}
.player__ai .inkdot {
  animation: breathe 1800ms ease-in-out infinite;
  box-shadow: 0 0 0 0 rgba(123, 163, 201, 0.45);
}
.player__ai small {
  font-size: 10.5px;
  letter-spacing: 0.5px;
}

.player__stage {
  position: absolute;
  left: 50%;
  top: 52%;
  transform: translate(-50%, -50%);
  width: min(260px, 70%);
  aspect-ratio: 2 / 3;
  border-radius: 12px;
  overflow: hidden;
  border: 0.5px solid rgba(214, 210, 200, 0.16);
  background: #0a0b0d;
  z-index: 2;
}

.player__stage video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.player__poster {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-size: cover;
  background-position: center;
  transition: opacity 280ms var(--ease);
}
.player__poster.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.player__play {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  border: 0;
  background: rgba(247, 244, 237, 0.92);
  color: #23201c;
  font-size: 18px;
  padding-left: 3px;
  cursor: pointer;
}

.player__scrub {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 78px;
  z-index: 5;
}

.player__time {
  position: absolute;
  left: 50%;
  bottom: 22px;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 12px;
  color: #eae5dc;
  background: rgba(20, 22, 26, 0.7);
  backdrop-filter: blur(8px);
  padding: 4px 10px;
  border-radius: 10px;
  white-space: nowrap;
}

.player__scrub input[type="range"] {
  width: 100%;
  height: 3px;
  appearance: none;
  background: rgba(214, 210, 200, 0.28);
  border-radius: 2px;
  outline: none;
  accent-color: #c4645a;
}
.player__scrub input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #f0ece3;
  cursor: pointer;
}

.player__offer {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 108px;
  z-index: 6;
  animation: cardUp 520ms var(--ease) both;
}
.player__offer-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 12px;
  background: rgba(247, 244, 237, 0.94);
  color: var(--ink);
  border: 0.5px solid rgba(227, 220, 207, 0.8);
}
.player__offer-card strong {
  font-family: var(--font-serif);
  font-size: 15px;
}
.player__offer-card p {
  margin: 4px 0 0;
  font-size: 12.5px;
  color: var(--ink-60);
  line-height: 1.55;
}
.player__offer-acts {
  display: flex;
  gap: 10px;
}

.player__hint {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 36px;
  text-align: center;
  font-size: 11px;
  letter-spacing: 1px;
  color: rgba(214, 210, 200, 0.4);
  z-index: 4;
  margin: 0;
  pointer-events: none;
}

/* ---------- 不适度滑块 ---------- */

.slider {
  position: relative;
  height: 30px;
  display: flex;
  align-items: center;
  margin: 12px 0 4px;
}

.slider__track {
  height: 2px;
  flex: 1;
  border-radius: 2px;
  background: linear-gradient(
    90deg,
    var(--line),
    rgba(176, 74, 63, 0.55)
  );
  position: relative;
}

.slider__knob {
  position: absolute;
  top: 50%;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--paper);
  border: 1.5px solid var(--cinnabar);
  transform: translate(-50%, -50%);
  cursor: grab;
  transition: left var(--t-fast) var(--ease);
}

.slider__labels {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--ink-40);
}

/* ---------- 顶栏 ---------- */

.appbar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  height: 104px;
  padding: 52px 24px 8px;
  background: linear-gradient(
    180deg,
    var(--paper) 84%,
    rgba(247, 244, 237, 0)
  );
}

.appbar__icon {
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  color: var(--ink-60);
  font-size: 17px;
  line-height: 1;
  font-family: inherit;
}

/* ---------- 底部 Tab ---------- */

.tabbar {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 76px;
  display: flex;
  align-items: flex-start;
  padding-top: 11px;
  background: rgba(247, 244, 237, 0.9);
  backdrop-filter: blur(18px) saturate(1.2);
  border-top: 0.5px solid var(--line);
  z-index: 60;
  transition: transform var(--t-base) var(--ease),
    opacity var(--t-base) var(--ease);
}

.tabbar.is-hidden {
  transform: translateY(100%);
  opacity: 0;
  pointer-events: none;
}

.tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  background: none;
  border: 0;
  cursor: pointer;
  font-family: inherit;
  font-size: 12.5px;
  color: var(--ink-40);
  letter-spacing: 1.5px;
  transition: color var(--t-fast) var(--ease);
  padding: 0;
}

.tab.is-active {
  color: var(--ink);
}

.tab__mark {
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: transparent;
  transition: background var(--t-fast) var(--ease);
}

.tab.is-active .tab__mark {
  background: var(--cinnabar);
}

/* ============================================================
   引导页
   ============================================================ */

.onb {
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 40px;
}

.screen--dark {
  background: var(--night);
  color: var(--night-ink);
}

.onb__vert {
  writing-mode: vertical-rl;
  font-family: var(--font-serif);
  font-size: 22px;
  line-height: 2;
  letter-spacing: 6px;
  color: var(--night-ink);
  align-self: center;
  height: 300px;
  animation: fadeUp 1600ms var(--ease) both;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.onb__choices {
  display: flex;
  gap: 14px;
  justify-content: center;
  margin-top: 46px;
}

.onb__choice {
  padding: 10px 22px;
  border-radius: 20px;
  border: 0.5px solid rgba(214, 210, 200, 0.28);
  background: transparent;
  color: rgba(214, 210, 200, 0.8);
  font-family: var(--font-serif);
  font-size: 14px;
  letter-spacing: 2px;
  cursor: pointer;
  transition: all var(--t-base) var(--ease);
}
.onb__choice:hover {
  border-color: var(--night-cinnabar);
  color: #e8ddd6;
}

.onb__q {
  font-family: var(--font-serif);
  font-size: 22px;
  line-height: 1.75;
  letter-spacing: 1px;
  margin: 0 0 8px;
}

.field {
  width: 100%;
  border: 0;
  border-bottom: 0.5px solid var(--line);
  background: transparent;
  padding: 12px 2px;
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--ink);
  outline: none;
}
.field::placeholder {
  color: var(--ink-20);
}
.field:focus {
  border-color: var(--cinnabar);
}

textarea.field {
  min-height: 130px;
  resize: none;
  line-height: 1.8;
  border: 0.5px solid var(--line);
  border-radius: var(--r-field);
  padding: 14px;
}

/* ============================================================
   书籍详情
   ============================================================ */

.detail__hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 8px;
}

.detail__title {
  font-family: var(--font-serif);
  font-size: 25px;
  letter-spacing: 2px;
  margin: 22px 0 6px;
}

.aiblock {
  background: var(--paper-2);
  border: 0.5px solid var(--line);
  border-radius: var(--r-card);
  padding: 16px 16px 18px;
}

.aiblock__head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.aiblock__head span {
  font-size: 13px;
  color: var(--azurite);
  letter-spacing: 1px;
}

.aiblock p {
  font-family: var(--font-serif);
  font-size: 14.5px;
  line-height: 1.85;
  margin: 0;
}

/* 书脉预览 */
.spinemini {
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 2;
  color: var(--ink-60);
  background: var(--paper-2);
  border: 0.5px solid var(--line);
  border-radius: var(--r-card);
  padding: 14px 16px;
  white-space: pre;
  overflow-x: auto;
}

.relbook {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 0.5px solid var(--line);
  font-size: 14px;
}
.relbook__dash {
  flex: 1;
  height: 0;
  border-top: 1px dashed var(--ink-20);
}
.relbook__tag {
  font-size: 11.5px;
  letter-spacing: 0.5px;
}
.relbook__tag--near {
  color: var(--azurite);
}
.relbook__tag--clash {
  color: var(--cinnabar);
}

.avatars {
  display: flex;
}
.avatars .avatar {
  width: 24px;
  height: 24px;
  margin-left: -7px;
  border: 1.5px solid var(--paper);
}
.avatars .avatar:first-child {
  margin-left: 0;
}

/* ============================================================
   阅读器
   ============================================================ */

.reader {
  background: var(--rd-bg);
  color: var(--rd-text);
  overflow: hidden;
  padding: 0;
}

.reader::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--noise);
  opacity: var(--rd-noise);
  pointer-events: none;
  z-index: 1;
}

.rd__scroll {
  position: absolute;
  inset: 0;
  overflow-y: auto;
  scrollbar-width: none;
  padding: 64px 24px 120px;
}

/* 上下渐隐，让文字不撞状态栏与页脚 */
.rd__fade {
  position: absolute;
  left: 0;
  right: 0;
  z-index: 12;
  pointer-events: none;
}
.rd__fade--top {
  top: 0;
  height: 58px;
  background: linear-gradient(
    180deg,
    var(--rd-bg) 42%,
    color-mix(in srgb, var(--rd-bg) 0%, transparent)
  );
}
.rd__fade--bot {
  bottom: 0;
  height: 112px;
  background: linear-gradient(
    0deg,
    var(--rd-bg) 52%,
    color-mix(in srgb, var(--rd-bg) 0%, transparent)
  );
}
.rd__scroll::-webkit-scrollbar {
  display: none;
}

.rd__chap {
  font-size: 16.5px;
  font-weight: 500;
  letter-spacing: 2.5px;
  margin: 22px 0 34px;
  font-family: var(--font-serif);
}

.rd__body p {
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.85;
  letter-spacing: 0.02em;
  text-align: justify;
  text-indent: 2em;
  margin: 0 0 0.9em;
  color: var(--rd-text);
  transition: font-size var(--t-base) var(--ease),
    line-height var(--t-base) var(--ease);
}

.rd__body[data-font="kai"] p,
.rd__body[data-font="kai"] .rd__chap {
  font-family: var(--font-kai);
}
.rd__body[data-font="hei"] p {
  font-family: var(--font-hei);
}
.rd__body[data-font="round"] p {
  font-family: var(--font-round);
}

/* 朱砂划线：手绘感下划线，字色不变 */
.hl {
  background-image: linear-gradient(
    var(--rd-accent),
    var(--rd-accent)
  );
  background-repeat: no-repeat;
  background-size: 100% 1.5px;
  background-position: 0 1.12em;
  padding-bottom: 2px;
  cursor: pointer;
}

/* 可长按的术语 */
.term {
  border-bottom: 1px dotted var(--rd-ai);
  cursor: pointer;
  padding-bottom: 1px;
}
.term.is-sel {
  background: rgba(62, 92, 118, 0.16);
  border-radius: 2px;
}

/* 页边同伴批注 */
.marginnote {
  border-left: 1.5px solid var(--rd-line);
  padding: 2px 0 2px 10px;
  margin: 14px 0 18px 6px;
  font-size: 11.5px;
  line-height: 1.65;
  color: var(--rd-dim);
  font-family: var(--font-ui);
  cursor: pointer;
  max-height: 20px;
  overflow: hidden;
  text-indent: 0;
  -webkit-mask-image: linear-gradient(90deg, #000 72%, transparent);
  mask-image: linear-gradient(90deg, #000 72%, transparent);
  transition: max-height var(--t-slow) var(--ease),
    color var(--t-base) var(--ease);
}
.marginnote.is-open {
  max-height: 200px;
  color: var(--rd-text);
  border-left-color: var(--rd-accent);
  -webkit-mask-image: none;
  mask-image: none;
}

/* 回声光点 */
.echodot {
  position: absolute;
  right: 9px;
  top: 470px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--rd-ai);
  border: 0;
  padding: 0;
  cursor: pointer;
  z-index: 20;
  animation: echoIn 1200ms var(--ease) both,
    breathe 2400ms ease-in-out 1200ms infinite;
}

@keyframes echoIn {
  from {
    opacity: 0;
    transform: scale(0.4);
  }
  to {
    opacity: 0.4;
    transform: scale(1);
  }
}

/* 章节终止符与页脚 */
.rd__end {
  text-align: center;
  color: var(--rd-dim);
  margin: 34px 0 40px;
  font-size: 13px;
}

.rd__foot {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 26px;
  text-align: center;
  font-size: 11.5px;
  letter-spacing: 1px;
  color: var(--rd-dim);
  z-index: 15;
  transition: opacity var(--t-base) var(--ease);
  pointer-events: none;
}
.reader.is-chrome .rd__foot {
  opacity: 0;
}

/* 阅读器顶栏 / 底栏 */
.rd__top,
.rd__bot {
  position: absolute;
  left: 0;
  right: 0;
  z-index: 55;
  background: color-mix(in srgb, var(--rd-bg) 92%, transparent);
  backdrop-filter: blur(14px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-base) var(--ease),
    transform var(--t-base) var(--ease);
}

.rd__top {
  top: 0;
  height: 92px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 0 20px 12px;
  border-bottom: 0.5px solid var(--rd-line);
  transform: translateY(-3px);
}

.rd__bot {
  bottom: 0;
  padding: 14px 20px 30px;
  border-top: 0.5px solid var(--rd-line);
  transform: translateY(3px);
}

.reader.is-chrome .rd__top,
.reader.is-chrome .rd__bot {
  opacity: 1;
  pointer-events: auto;
  transform: none;
}

.rd__icon {
  background: none;
  border: 0;
  color: var(--rd-text);
  font-family: inherit;
  font-size: 15px;
  cursor: pointer;
  padding: 4px 6px;
  opacity: 0.85;
}
.rd__icon:hover {
  opacity: 1;
  color: var(--rd-accent);
}

.rd__title {
  font-size: 13.5px;
  letter-spacing: 1px;
  color: var(--rd-dim);
}

.rd__progress {
  height: 2px;
  background: var(--rd-line);
  border-radius: 2px;
  position: relative;
  margin-bottom: 16px;
}
.rd__progress i {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 42%;
  background: var(--rd-accent);
  border-radius: 2px;
}
.rd__progress b {
  position: absolute;
  left: 42%;
  top: 50%;
  width: 8px;
  height: 8px;
  margin: -4px 0 0 -4px;
  border-radius: 50%;
  background: var(--rd-accent);
}

.rd__actions {
  display: flex;
  justify-content: space-between;
}
.rd__actions button {
  background: none;
  border: 0;
  color: var(--rd-dim);
  font-family: inherit;
  font-size: 13px;
  letter-spacing: 1px;
  cursor: pointer;
  padding: 2px 8px;
}
.rd__actions button:hover {
  color: var(--rd-accent);
}

/* ---------- 浮层通用 ---------- */

.veil {
  position: absolute;
  inset: 0;
  background: rgba(20, 22, 26, 0.32);
  backdrop-filter: blur(2px);
  opacity: 0;
  visibility: hidden;
  z-index: 65;
  transition: opacity var(--t-base) var(--ease),
    visibility 0s linear var(--t-base);
}
.veil.is-on {
  opacity: 1;
  visibility: visible;
  transition: opacity var(--t-base) var(--ease), visibility 0s;
}

.sheet {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 70;
  background: var(--rd-bg-2);
  border-top: 0.5px solid var(--rd-line);
  border-radius: var(--r-sheet) var(--r-sheet) 0 0;
  padding: 14px 22px 34px;
  transform: translateY(102%);
  transition: transform 400ms var(--ease);
  max-height: 78%;
  overflow-y: auto;
  scrollbar-width: none;
}
.sheet::-webkit-scrollbar {
  display: none;
}
.sheet.is-on {
  transform: none;
}

.sheet__grab {
  width: 34px;
  height: 4px;
  border-radius: 2px;
  background: var(--rd-line);
  margin: 0 auto 16px;
}

.sheet__close {
  position: absolute;
  right: 18px;
  top: 18px;
  background: none;
  border: 0;
  color: var(--rd-dim);
  font-size: 15px;
  cursor: pointer;
  font-family: inherit;
}

/* 选中文字菜单 */
.selmenu {
  position: absolute;
  left: 22px;
  right: 22px;
  top: 316px;
  z-index: 72;
  background: rgba(28, 30, 34, 0.94);
  backdrop-filter: blur(14px);
  border-radius: 12px;
  padding: 4px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px) scale(0.97);
  transform-origin: top center;
  transition: all 260ms var(--ease);
  box-shadow: 0 14px 30px -12px rgba(0, 0, 0, 0.6);
}
.selmenu.is-on {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.selmenu__primary {
  display: flex;
  align-items: center;
  gap: 9px;
  width: 100%;
  background: none;
  border: 0;
  color: #eae5dc;
  font-family: inherit;
  font-size: 14px;
  padding: 12px 14px;
  border-radius: 9px;
  cursor: pointer;
  text-align: left;
}
.selmenu__primary:hover {
  background: rgba(255, 255, 255, 0.07);
}
.selmenu__primary .inkdot {
  background: var(--night-azurite);
}

.selmenu__div {
  height: 0.5px;
  background: rgba(255, 255, 255, 0.12);
  margin: 3px 12px;
}

.selmenu__row {
  display: flex;
}
.selmenu__row button {
  flex: 1;
  background: none;
  border: 0;
  color: #c8c3ba;
  font-family: inherit;
  font-size: 12.5px;
  padding: 11px 4px;
  border-radius: 8px;
  cursor: pointer;
}
.selmenu__row button:hover {
  background: rgba(255, 255, 255, 0.07);
  color: #eae5dc;
}

.selmenu__arrow {
  position: absolute;
  top: -6px;
  left: 96px;
  width: 12px;
  height: 12px;
  background: rgba(28, 30, 34, 0.94);
  transform: rotate(45deg);
  border-radius: 2px;
}

/* 概念卡 */
.concept__label {
  font-size: 12.5px;
  color: var(--rd-ai);
  letter-spacing: 1px;
  margin: 2px 0 14px;
}
.concept h4 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 500;
  margin: 0;
  letter-spacing: 1px;
  color: var(--rd-text);
}
.concept p {
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.78;
  color: var(--rd-text);
  margin: 0 0 12px;
}
.concept .muted {
  color: var(--rd-dim);
  font-size: 14px;
}

.chiprow {
  display: flex;
  gap: 9px;
  margin-top: 18px;
}
.chip {
  flex: 1;
  height: 38px;
  border-radius: 8px;
  border: 0.5px solid var(--rd-line);
  background: transparent;
  color: var(--rd-text);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
  transition: all var(--t-fast) var(--ease);
}
.chip:hover {
  border-color: var(--rd-accent);
  color: var(--rd-accent);
}

/* 墨滴思考动画 */
.thinking {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--rd-dim);
  font-size: 13px;
  padding: 6px 0 2px;
}
.thinking i {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    var(--rd-ai) 0%,
    rgba(62, 92, 118, 0.35) 45%,
    transparent 72%
  );
  animation: bloom 900ms ease-in-out infinite;
}
@keyframes bloom {
  0%,
  100% {
    transform: scale(0.55);
    opacity: 0.9;
  }
  50% {
    transform: scale(1.15);
    opacity: 0.45;
  }
}

/* 书脉图 */
.spinemap {
  position: absolute;
  inset: 0;
  z-index: 68;
  background: color-mix(in srgb, var(--rd-bg) 82%, transparent);
  backdrop-filter: blur(20px);
  padding: 70px 22px 26px;
  opacity: 0;
  visibility: hidden;
  transform: translateX(16px);
  transition: all 400ms var(--ease);
  display: flex;
  flex-direction: column;
}
.spinemap.is-on {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.spinemap svg {
  width: 100%;
  flex: 1;
}

.node-done {
  fill: var(--rd-accent);
}
.node-todo {
  fill: none;
  stroke: var(--rd-dim);
  stroke-dasharray: 2 3;
  opacity: 0.5;
}
.edge {
  stroke: var(--rd-ai);
  stroke-width: 1;
  opacity: 0.5;
}
.edge-todo {
  stroke: var(--rd-dim);
  stroke-width: 1;
  stroke-dasharray: 3 4;
  opacity: 0.3;
}
.nlabel {
  fill: var(--rd-text);
  font-size: 11px;
  font-family: var(--font-ui);
}
.nlabel-todo {
  fill: var(--rd-dim);
  font-size: 11px;
  opacity: 0.55;
  filter: blur(1.6px);
}
.pulse {
  fill: none;
  stroke: var(--rd-accent);
  stroke-width: 1;
  animation: ring 2400ms ease-out infinite;
}
@keyframes ring {
  0% {
    r: 6;
    opacity: 0.9;
  }
  100% {
    r: 17;
    opacity: 0;
  }
}

.segmented {
  display: flex;
  gap: 4px;
  padding: 3px;
  border-radius: 9px;
  background: var(--paper-2);
  border: 0.5px solid var(--line);
}
.segmented button {
  flex: 1;
  height: 30px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--ink-60);
  font-family: inherit;
  font-size: 12.5px;
  cursor: pointer;
  transition: all var(--t-fast) var(--ease);
}
.segmented button.is-active {
  background: var(--paper);
  color: var(--ink);
  box-shadow: 0 0 0 0.5px var(--line);
}

.reader .segmented {
  background: color-mix(in srgb, var(--rd-bg-2) 90%, transparent);
  border-color: var(--rd-line);
}
.reader .segmented button {
  color: var(--rd-dim);
}
.reader .segmented button.is-active {
  background: var(--rd-bg);
  color: var(--rd-text);
  box-shadow: 0 0 0 0.5px var(--rd-line);
}

/* 章末苏格拉底问卡 */
.socratic {
  background: var(--rd-bg-2);
  border: 0.5px solid var(--rd-line);
  border-radius: var(--r-card);
  padding: 20px 20px 18px;
  margin-top: 8px;
  animation: cardUp 620ms var(--ease) both;
}

@keyframes cardUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.socratic__head {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  color: var(--rd-dim);
  margin-bottom: 16px;
}

.socratic__q {
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.8;
  margin: 0 0 10px;
  color: var(--rd-text);
  text-indent: 0;
  text-align: left;
}

.socratic__input {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  border: 0.5px solid var(--rd-line);
  border-radius: var(--r-field);
  padding: 10px 12px;
  background: var(--rd-bg);
}
.socratic__input input {
  flex: 1;
  border: 0;
  background: none;
  outline: none;
  font-family: inherit;
  font-size: 14px;
  color: var(--rd-text);
}
.socratic__input input::placeholder {
  color: var(--rd-dim);
}
.socratic__send {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 0;
  background: var(--rd-accent);
  color: #fff;
  cursor: pointer;
  font-size: 13px;
}

.socratic__skip {
  display: block;
  width: 100%;
  margin-top: 16px;
  background: none;
  border: 0;
  color: var(--rd-dim);
  font-family: inherit;
  font-size: 13.5px;
  letter-spacing: 1px;
  cursor: pointer;
  padding: 6px;
}
.socratic__skip:hover {
  color: var(--rd-text);
}

.socratic__saved {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  color: var(--rd-ai);
  margin-top: 16px;
}

.userreply {
  text-indent: 0;
  background: var(--rd-bg);
  border: 0.5px solid var(--rd-line);
  border-radius: var(--r-card);
  padding: 14px 16px;
  margin-top: 12px;
  font-size: 14.5px;
  line-height: 1.72;
  font-family: var(--font-serif);
  animation: cardUp 420ms var(--ease) both;
}

/* 排版设置 */
.typo__label {
  font-size: 12.5px;
  color: var(--rd-dim);
  letter-spacing: 1px;
  margin: 18px 0 9px;
}

.themedots {
  display: flex;
  gap: 14px;
}
.themedot {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1.5px solid transparent;
  cursor: pointer;
  position: relative;
  padding: 0;
  font-family: var(--font-serif);
  font-size: 13px;
  transition: border-color var(--t-fast) var(--ease);
}
.themedot.is-active {
  border-color: var(--rd-accent);
}

.stepper {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 9px 0;
}
.stepper span:first-child {
  font-size: 12.5px;
  color: var(--rd-dim);
  width: 44px;
  flex: none;
}
.stepper input[type="range"] {
  flex: 1;
  accent-color: var(--rd-accent);
  height: 2px;
}

.switchrow {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  border-top: 0.5px solid var(--rd-line);
  font-size: 14px;
  color: var(--rd-text);
}

.sw {
  width: 42px;
  height: 25px;
  border-radius: 13px;
  border: 0;
  background: var(--rd-line);
  position: relative;
  cursor: pointer;
  transition: background var(--t-base) var(--ease);
  flex: none;
}
.sw::after {
  content: "";
  position: absolute;
  top: 2.5px;
  left: 2.5px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #fff;
  transition: transform var(--t-base) var(--ease);
}
.sw.is-on {
  background: var(--rd-accent);
}
.sw.is-on::after {
  transform: translateX(17px);
}

/* 回声弹层 */
.echo__from {
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--rd-ai);
  margin-bottom: 18px;
}
.quotebox {
  border-left: 1.5px solid var(--rd-accent);
  padding-left: 13px;
  margin: 0 0 16px;
}
.quotebox p {
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.7;
  margin: 0 0 5px;
  color: var(--rd-text);
}
.quotebox cite {
  font-style: normal;
  font-size: 11.5px;
  color: var(--rd-dim);
}
.quotebox--old {
  border-left-color: var(--rd-ai);
}

/* ============================================================
   书房
   ============================================================ */

.readcard {
  display: flex;
  gap: 15px;
  padding: 16px;
  border: 0.5px solid var(--line);
  border-radius: var(--r-card);
  background: var(--paper-2);
  margin-bottom: 12px;
  cursor: pointer;
  transition: border-color var(--t-fast) var(--ease);
}
.readcard:hover {
  border-color: rgba(176, 74, 63, 0.4);
}

.bar {
  height: 3px;
  border-radius: 2px;
  background: var(--line);
  position: relative;
  margin: 10px 0 9px;
}
.bar i {
  position: absolute;
  inset: 0 auto 0 0;
  background: var(--cinnabar);
  border-radius: 2px;
}

.recall {
  font-family: var(--font-serif);
  font-size: 12.5px;
  line-height: 1.62;
  color: var(--ink-60);
  border-left: 1.5px solid var(--cinnabar);
  padding-left: 9px;
}

.nudge {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background: rgba(201, 162, 39, 0.09);
  border: 0.5px solid rgba(201, 162, 39, 0.3);
  border-radius: var(--r-card);
  padding: 13px 15px;
  font-size: 13.5px;
  line-height: 1.6;
}

.counts {
  display: flex;
  gap: 22px;
  font-size: 13px;
  color: var(--ink-60);
}
.counts b {
  font-weight: 500;
  color: var(--ink);
}

/* ============================================================
   共读
   ============================================================ */

.room {
  border: 0.5px solid var(--line);
  border-radius: var(--r-card);
  padding: 16px;
  background: var(--paper-2);
  margin-bottom: 12px;
  cursor: pointer;
  transition: border-color var(--t-fast) var(--ease);
}
.room:hover {
  border-color: rgba(176, 74, 63, 0.4);
}

.topic {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin: 12px 0;
}
.topic p {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.7;
}

.locked {
  position: relative;
  border-radius: 8px;
  padding: 11px 13px;
  background: var(--paper-3);
  font-size: 12.5px;
  color: var(--ink-40);
  display: flex;
  gap: 8px;
  align-items: center;
}

.annot {
  padding: 18px 0;
  border-bottom: 0.5px solid var(--line);
}

.annot__head {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 11px;
}
.annot__name {
  font-size: 13.5px;
  color: var(--ink);
}
.annot__loc {
  margin-left: auto;
  font-size: 11.5px;
  color: var(--ink-40);
}

.annot__quote {
  border-left: 1.5px solid var(--cinnabar);
  padding-left: 11px;
  font-family: var(--font-serif);
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink-60);
  margin-bottom: 11px;
}

.annot__text {
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.8;
  margin: 0;
}

.annot__acts {
  display: flex;
  gap: 18px;
  margin-top: 12px;
  font-size: 12.5px;
  color: var(--ink-40);
}
.annot__acts button {
  background: none;
  border: 0;
  padding: 0;
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  cursor: pointer;
}
.annot__acts button:hover {
  color: var(--cinnabar);
}

.composer {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 20px 30px;
  background: rgba(247, 244, 237, 0.94);
  backdrop-filter: blur(16px);
  border-top: 0.5px solid var(--line);
  z-index: 50;
}
.composer__box {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 0.5px solid var(--line);
  border-radius: 20px;
  padding: 9px 14px;
  background: var(--paper);
  font-size: 14px;
  color: var(--ink-40);
}

/* ============================================================
   洞见
   ============================================================ */

.tl {
  border-left: 0;
}

.tl__day {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 26px 0 16px;
  font-size: 12px;
  color: var(--ink-40);
  letter-spacing: 1px;
}
.tl__day::before,
.tl__day::after {
  content: "";
  flex: 1;
  height: 0;
  border-top: 0.5px solid var(--line);
}

.tl__hl {
  border-left: 1.5px solid var(--cinnabar);
  padding-left: 13px;
  margin-bottom: 16px;
}
.tl__hl p {
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.72;
  margin: 0 0 5px;
}
.tl__src {
  font-size: 11.5px;
  color: var(--ink-40);
}

.tl__idea {
  padding-left: 14px;
  margin-bottom: 18px;
  font-family: var(--font-serif);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-60);
}
.tl__idea::before {
  content: "✎ ";
  color: var(--ink-40);
}

.tl__ai {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 12px 14px;
  border: 0.5px solid var(--line);
  border-radius: var(--r-card);
  background: var(--paper-2);
  font-size: 13.5px;
  margin-bottom: 18px;
  cursor: pointer;
}

.tl__echo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--azurite);
  margin-bottom: 8px;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  border-radius: 8px;
  background: var(--cinnabar);
  color: #fff;
  font-size: 10px;
  margin-left: 5px;
}

/* 卡片库 */
.cardgrid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 11px;
}
.notecard {
  border: 0.5px solid var(--line);
  border-radius: var(--r-card);
  padding: 13px;
  background: var(--paper-2);
  cursor: pointer;
  transition: all var(--t-fast) var(--ease);
  position: relative;
}
.notecard.is-sel {
  border-color: var(--cinnabar);
  background: var(--cinnabar-soft);
}
.notecard p {
  font-family: var(--font-serif);
  font-size: 13.5px;
  line-height: 1.7;
  margin: 0 0 9px;
}
.notecard span {
  font-size: 11px;
  color: var(--ink-40);
}

/* 图谱 */
.graphwrap {
  position: relative;
  background: var(--night);
  border-radius: var(--r-card);
  overflow: hidden;
  height: 400px;
}
.graphwrap canvas {
  display: block;
  width: 100%;
  height: 100%;
}
.graphstat {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 12px;
  text-align: center;
  font-size: 11px;
  color: rgba(214, 210, 200, 0.5);
  font-family: var(--font-mono);
  letter-spacing: 0.5px;
}
.graphfab {
  position: absolute;
  right: 12px;
  top: 12px;
  height: 34px;
  padding: 0 14px;
  border-radius: 17px;
  border: 0.5px solid rgba(123, 163, 201, 0.5);
  background: rgba(20, 22, 26, 0.7);
  backdrop-filter: blur(8px);
  color: var(--night-azurite);
  font-family: inherit;
  font-size: 12px;
  cursor: pointer;
}

/* 输出台 */
.studiogrid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 11px;
  margin: 14px 0 22px;
}
.studiobtn {
  height: 74px;
  border: 0.5px solid var(--line);
  border-radius: var(--r-card);
  background: var(--paper-2);
  font-family: inherit;
  font-size: 14.5px;
  color: var(--ink);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: all var(--t-fast) var(--ease);
}
.studiobtn:hover {
  border-color: var(--cinnabar);
  color: var(--cinnabar);
}
.studiobtn small {
  font-size: 10.5px;
  color: var(--ink-40);
}
.studiobtn:hover small {
  color: rgba(176, 74, 63, 0.7);
}

/* ============================================================
   年鉴
   ============================================================ */

.annual {
  padding: 26px 42px 130px;
  text-align: center;
  font-family: var(--font-serif);
}
.annual__yr {
  font-size: 22px;
  letter-spacing: 8px;
  color: var(--ink-60);
  margin-bottom: 54px;
}
.annual__line {
  font-size: 19px;
  line-height: 2.2;
  letter-spacing: 2px;
  margin: 0 0 12px;
}
.annual__dim {
  font-size: 15px;
  color: var(--ink-60);
  letter-spacing: 1px;
}
.annual__motif {
  font-size: 21px;
  line-height: 2;
  letter-spacing: 2px;
  color: var(--cinnabar);
  margin: 18px 0;
}
.annual__rule {
  height: 0;
  border-top: 0.5px solid var(--line);
  margin: 44px 0;
}
.annual__next {
  margin-top: 46px;
  font-size: 14px;
  letter-spacing: 4px;
  color: var(--ink-40);
  background: none;
  border: 0;
  cursor: pointer;
  font-family: inherit;
}

/* ============================================================
   右侧说明栏
   ============================================================ */

.docs {
  overflow-y: auto;
  padding: 6px 4px 6px 0;
}

.docs h3 {
  font-size: 13px;
  color: #ded8ce;
  margin: 0 0 4px;
  letter-spacing: 0.5px;
}

.docs__sub {
  font-size: 11px;
  color: #635f58;
  margin: 0 0 18px;
  letter-spacing: 1px;
}

.docs__item {
  border-left: 1.5px solid #33363c;
  padding: 2px 0 2px 13px;
  margin-bottom: 18px;
}
.docs__item strong {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: #b8b2a8;
  margin-bottom: 5px;
}
.docs__item p {
  margin: 0;
  font-size: 11.5px;
  line-height: 1.75;
  color: #7d786f;
}
.docs__item--key {
  border-left-color: var(--night-cinnabar);
}
.docs__item--ai {
  border-left-color: var(--night-azurite);
}

.hintbar {
  font-size: 11.5px;
  color: #6b675f;
  letter-spacing: 0.5px;
  text-align: center;
  min-height: 17px;
}
.hintbar b {
  color: #a29c93;
  font-weight: 500;
}