:root {
  color-scheme: light;
  --app-bg: #f4f6f2;
  --surface: #ffffff;
  --ink: #202528;
  --muted: #697278;
  --line: #d8ddd6;
  --shadow: 0 18px 48px rgba(26, 31, 34, 0.16);
  --accent-main: #9f2842;
  --yellow: #f2c94c;
  --teal: #22a39f;
  --rose: #e15c75;
  --blue: #5b66f1;
  --violet: #8a63c7;
  --green: #75dd6b;
  --code-bg: #20262a;
  --pdf-target-width: calc(595px * var(--zoom, 1.66));
  --annotation-gutter: clamp(390px, 27vw, 560px);
  --reader-header-height: 64px;
}

* {
  box-sizing: border-box;
}

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

body {
  background: var(--app-bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body.is-mobile-overlay-locked {
  overflow: hidden;
  overscroll-behavior: none;
}

button,
textarea {
  font: inherit;
}

button {
  color: inherit;
}

.app-shell {
  min-height: 100vh;
}

.reader-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(240px, 1fr) auto minmax(420px, 1fr);
  align-items: center;
  gap: 18px;
  min-height: var(--reader-header-height);
  padding: 0 24px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.reader-title {
  justify-self: start;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  overflow: hidden;
}

.reader-title strong {
  flex: 0 0 auto;
  color: var(--accent-main);
  font-size: 1rem;
  font-weight: 850;
  letter-spacing: 0;
}

.reader-center-controls,
.reader-controls,
.zoom-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.reader-center-controls {
  justify-self: center;
  min-height: 40px;
  padding: 0 10px;
  border: 1px solid rgba(32, 37, 40, 0.1);
  border-radius: 10px;
  background: rgba(249, 250, 247, 0.78);
}

.reader-controls {
  justify-self: end;
}

.guide-info-button {
  display: inline-grid;
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid rgba(159, 40, 66, 0.24);
  border-radius: 9px;
  background: #fff8f9;
  color: var(--accent-main);
  cursor: pointer;
  font-size: 1.05rem;
  font-family: Georgia, "Times New Roman", serif;
  font-style: italic;
  font-weight: 900;
  line-height: 1;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.76);
}

.guide-info-button:hover {
  border-color: rgba(159, 40, 66, 0.42);
  background: rgba(159, 40, 66, 0.08);
}

.guide-info-button:focus-visible {
  border-color: rgba(159, 40, 66, 0.42);
  outline: 2px solid rgba(159, 40, 66, 0.16);
  outline-offset: 2px;
}

.page-jump {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #303638;
  font-size: 0.92rem;
  font-weight: 780;
  white-space: nowrap;
}

.page-input {
  width: 44px;
  height: 30px;
  border: 1px solid rgba(32, 37, 40, 0.16);
  border-radius: 7px;
  background: #ffffff;
  color: var(--ink);
  font: inherit;
  font-weight: 820;
  text-align: center;
}

.page-input:focus {
  border-color: rgba(159, 40, 66, 0.48);
  outline: 2px solid rgba(159, 40, 66, 0.16);
  outline-offset: 1px;
}

.toolbar-divider {
  width: 1px;
  height: 24px;
  background: rgba(32, 37, 40, 0.12);
}

.checkbox-control {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 720;
  white-space: nowrap;
}

.checkbox-control input {
  width: 17px;
  height: 17px;
  accent-color: var(--accent-main);
}

.secondary-button,
.tool-button,
.icon-button,
.close-all-button {
  display: inline-grid;
  place-items: center;
  border: 1px solid rgba(32, 37, 40, 0.14);
  border-radius: 8px;
  background: #ffffff;
  cursor: pointer;
  line-height: 1;
}

.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 36px;
  padding: 0 14px;
  color: #303638;
  font-size: 0.9rem;
  font-weight: 780;
  white-space: nowrap;
}

.button-icon {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.1;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.tool-button,
.icon-button {
  width: 36px;
  height: 36px;
}

.secondary-button:hover,
.tool-button:hover,
.icon-button:hover {
  border-color: rgba(159, 40, 66, 0.28);
  background: rgba(159, 40, 66, 0.07);
  color: var(--accent-main);
}

.close-all-button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 36px;
  padding: 0 7px 0 11px;
  border-color: rgba(159, 40, 66, 0.34);
  background: #fff6f7;
  color: #852139;
  font-size: 0.9rem;
  font-weight: 820;
  white-space: nowrap;
}

.close-all-button:hover {
  border-color: rgba(32, 37, 40, 0.58);
  background: var(--accent-main);
  color: #ffffff;
}

.close-all-button:disabled {
  border-color: rgba(32, 37, 40, 0.12);
  background: rgba(255, 255, 255, 0.64);
  color: rgba(105, 114, 120, 0.78);
  cursor: default;
}

.close-all-mark {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border: 1px solid rgba(32, 37, 40, 0.7);
  border-radius: 5px;
  background: #c72f34;
  color: #ffffff;
  font-size: 1rem;
  font-weight: 900;
  line-height: 1;
}

.close-all-button:disabled .close-all-mark {
  border-color: rgba(32, 37, 40, 0.18);
  background: rgba(159, 40, 66, 0.18);
  color: rgba(255, 255, 255, 0.82);
}

.tool-readout,
.open-count {
  color: #303638;
  font-size: 0.92rem;
  font-weight: 760;
}

.tool-readout {
  min-width: 62px;
  text-align: center;
}

.open-count {
  min-width: 60px;
  color: var(--muted);
  text-align: right;
}

.pdf-pane {
  min-height: calc(100vh - var(--reader-header-height));
  overflow-x: hidden;
  overflow-y: auto;
  background:
    linear-gradient(90deg, rgba(32, 37, 40, 0.045) 1px, transparent 1px) 0 0 / 32px 32px,
    #f2f4ef;
}

.viewer-stage {
  position: relative;
  min-height: calc(100vh - var(--reader-header-height));
  padding: 34px clamp(12px, 1vw, 22px) 90px;
}

.pages {
  display: grid;
  justify-items: start;
  gap: 28px;
  width: min(var(--pdf-target-width), calc(100vw - var(--annotation-gutter)));
}

.pdf-page {
  position: relative;
  width: 100%;
  min-width: min(100%, 440px);
  aspect-ratio: 595.276 / 841.89;
  background: #ffffff;
  box-shadow: 0 18px 42px rgba(26, 31, 34, 0.14);
  user-select: none;
}

.pdf-page img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
}

.text-layer,
.highlight-layer {
  position: absolute;
  inset: 0;
}

.text-layer {
  z-index: 1;
  overflow: hidden;
  color: transparent;
  -webkit-text-fill-color: transparent;
  pointer-events: none;
  user-select: text;
}

.pdf-text-line {
  position: absolute;
  display: block;
  overflow: visible;
  color: transparent;
  -webkit-text-fill-color: transparent;
  font-family: "Palatino", "Palatino Linotype", "Book Antiqua", "URW Palladio L", "P052", serif;
  font-weight: 400;
  line-height: 1;
  white-space: pre;
  pointer-events: none;
  user-select: text;
}

.pdf-text-word {
  display: inline;
  overflow: visible;
  color: transparent;
  -webkit-text-fill-color: transparent;
  font-family: "Palatino", "Palatino Linotype", "Book Antiqua", "URW Palladio L", "P052", serif;
  font-style: normal;
  font-weight: 400;
  line-height: 1;
  white-space: pre;
  pointer-events: none;
  user-select: text;
}

.pdf-text-word[data-font="serif-bold"] {
  font-weight: 700;
}

.pdf-text-word[data-font="serif-italic"] {
  font-style: italic;
}

.pdf-text-word[data-font="serif-bold-italic"] {
  font-style: italic;
  font-weight: 700;
}

.pdf-text-word[data-font="sans"],
.pdf-text-word[data-font="sans-bold"],
.pdf-text-word[data-font="sans-italic"] {
  font-family: "DejaVu Sans", Arial, Helvetica, sans-serif;
}

.pdf-text-word[data-font="sans-bold"] {
  font-weight: 700;
}

.pdf-text-word[data-font="sans-italic"] {
  font-style: italic;
}

.pdf-text-word[data-font="mono"],
.pdf-text-word[data-font="mono-bold"] {
  font-family: "Latin Modern Mono", "LM Mono", Consolas, "Courier New", monospace;
}

.pdf-text-word[data-font="mono-bold"] {
  font-weight: 700;
}

.pdf-text-word[data-font="math"] {
  font-style: italic;
}

.pdf-text-line::selection,
.pdf-text-word::selection {
  background: rgba(159, 40, 66, 0.18);
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.highlight-layer {
  z-index: 2;
}

.pdf-highlight {
  position: absolute;
  border: 1px solid color-mix(in srgb, var(--accent) 78%, #000);
  border-radius: 3px;
  background: color-mix(in srgb, var(--accent) 32%, transparent);
  cursor: pointer;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.3) inset;
}

.pdf-highlight:hover:not(.is-hover-suppressed),
.pdf-highlight:focus-visible:not(.is-hover-suppressed),
.pdf-highlight.is-hovered,
.pdf-highlight.is-active {
  border-color: color-mix(in srgb, var(--accent) 92%, #000);
  outline: none;
  background: color-mix(in srgb, var(--accent) 45%, transparent);
  box-shadow: inset 0 0 0 2px color-mix(in srgb, var(--accent) 88%, #000);
}

.connector-layer,
.floating-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.connector-layer {
  z-index: 8;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.connector-layer path {
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-dasharray: 4 6;
}

.floating-layer {
  z-index: 9;
}

.floating-layer.is-arranging .annotation-card {
  transition: transform 160ms ease-out;
}

.floating-layer.is-arranging .annotation-card.is-entering {
  transition: none;
}

.annotation-card {
  position: absolute;
  width: min(360px, calc(100vw - 40px));
  max-height: min(620px, calc(100vh - 128px));
  overflow: auto;
  border: 1px solid color-mix(in srgb, var(--card-accent, var(--teal)) 32%, rgba(32, 37, 40, 0.16));
  border-top: 5px solid var(--card-accent, var(--teal));
  border-bottom: 2px solid color-mix(in srgb, var(--card-accent, var(--teal)) 34%, rgba(32, 37, 40, 0.08));
  border-radius: 8px;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--card-accent, var(--teal)) 4%, #ffffff), #ffffff 150px),
    #ffffff;
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.74),
    inset 4px 0 0 color-mix(in srgb, var(--card-accent, var(--teal)) 16%, transparent),
    0 18px 46px rgba(26, 31, 34, 0.14);
  pointer-events: auto;
  scrollbar-gutter: stable;
}

.annotation-card.is-selected {
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.74),
    inset 4px 0 0 color-mix(in srgb, var(--card-accent, var(--teal)) 20%, transparent),
    0 0 0 2px color-mix(in srgb, var(--card-accent, var(--teal)) 34%, transparent),
    0 22px 52px rgba(26, 31, 34, 0.17);
}

.annotation-card-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 17px 18px 14px 20px;
  border-bottom: 1px solid color-mix(in srgb, var(--card-accent, var(--teal)) 18%, rgba(32, 37, 40, 0.1));
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--card-accent, var(--teal)) 7%, transparent), transparent 64%),
    #ffffff;
  backdrop-filter: blur(10px);
}

.annotation-card-header > div:first-child {
  min-width: 0;
}

.annotation-type,
.eyebrow {
  margin: 0;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 820;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.annotation-card h2 {
  margin: 4px 0 0;
  font-size: 1.06rem;
  line-height: 1.22;
  letter-spacing: 0;
}

.card-close,
.icon-button {
  flex: 0 0 auto;
}

.annotation-card-actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 8px;
}

.annotation-nav-button {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid color-mix(in srgb, var(--card-accent, var(--teal)) 34%, rgba(32, 37, 40, 0.14));
  border-radius: 8px;
  background: color-mix(in srgb, var(--card-accent, var(--teal)) 8%, #ffffff);
  color: color-mix(in srgb, var(--card-accent, var(--teal)) 70%, #202528);
  cursor: pointer;
}

.annotation-nav-button svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.annotation-nav-button:hover,
.annotation-nav-button:focus-visible {
  border-color: color-mix(in srgb, var(--card-accent, var(--teal)) 62%, rgba(32, 37, 40, 0.18));
  background: color-mix(in srgb, var(--card-accent, var(--teal)) 16%, #ffffff);
  color: color-mix(in srgb, var(--card-accent, var(--teal)) 82%, #121617);
}

.annotation-nav-button:disabled {
  border-color: rgba(32, 37, 40, 0.1);
  background: rgba(32, 37, 40, 0.04);
  color: rgba(32, 37, 40, 0.28);
  cursor: default;
}

@media (prefers-reduced-motion: reduce) {
  .floating-layer.is-arranging .annotation-card {
    transition: none;
  }
}

.card-close {
  width: 38px;
  height: 38px;
  border-color: rgba(32, 37, 40, 0.82);
  background: #c72f34;
  color: #ffffff;
  font-size: 1.25rem;
  font-weight: 900;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.38) inset;
}

.card-close:hover,
.card-close:focus-visible {
  border-color: #141718;
  background: #a9141f;
  color: #ffffff;
}

.annotation-body {
  position: relative;
  z-index: 0;
  padding: 17px 18px 18px 20px;
  color: #273034;
}

.annotation-body p,
.annotation-body li {
  font-size: 0.94rem;
  line-height: 1.55;
}

.annotation-body p {
  margin: 0 0 13px;
}

.annotation-body blockquote {
  position: relative;
  isolation: isolate;
  margin: 17px 0 18px;
  padding: 15px 18px 15px 24px;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--card-accent, var(--teal)) 24%, rgba(32, 37, 40, 0.13));
  border-radius: 8px;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--card-accent, var(--teal)) 12%, transparent), transparent 76%),
    color-mix(in srgb, var(--card-accent, var(--teal)) 5%, #ffffff);
  box-shadow:
    inset 5px 0 0 var(--card-accent, var(--teal)),
    inset 0 1px 0 rgba(255, 255, 255, 0.72);
}

.annotation-body blockquote::before {
  content: "“";
  position: absolute;
  top: -18px;
  right: 14px;
  color: color-mix(in srgb, var(--card-accent, var(--teal)) 18%, transparent);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 5.2rem;
  font-weight: 700;
  line-height: 1;
  pointer-events: none;
}

.annotation-body blockquote p,
.annotation-body blockquote li {
  position: relative;
  z-index: 1;
  font-size: 0.93rem;
  line-height: 1.55;
}

.annotation-body blockquote p {
  margin: 0 0 11px;
}

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

.annotation-body ul {
  margin: 8px 0 14px;
  padding-left: 20px;
}

.annotation-body strong {
  font-weight: 830;
}

.annotation-body a {
  color: #0f756f;
  font-weight: 760;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.16em;
}

.annotation-body mark {
  padding: 0.08em 0.22em;
  border-radius: 4px;
  background: #fff0a6;
}

.annotation-body .callout {
  margin: 14px 0;
  padding: 12px 13px;
  border-left: 4px solid var(--card-accent, var(--teal));
  border-radius: 0 8px 8px 0;
  background: color-mix(in srgb, var(--card-accent, var(--teal)) 12%, #ffffff);
}

.annotation-body pre {
  position: relative;
  margin: 14px 0;
  padding: 14px;
  overflow: auto;
  border-radius: 8px;
  background: var(--code-bg);
  color: #f3f7f7;
  font-size: 0.82rem;
  line-height: 1.5;
  white-space: pre;
  tab-size: 4;
}

.annotation-body code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

.annotation-body pre.is-highlighted-code {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.035), transparent 44px),
    #1f262a;
}

.annotation-body pre.is-highlighted-code code {
  color: #e8edf0;
  text-shadow: none;
}

.annotation-body .token.comment,
.annotation-body .token.prolog,
.annotation-body .token.doctype,
.annotation-body .token.cdata {
  color: #84919a;
  font-style: italic;
}

.annotation-body .token.keyword {
  color: #ff8f9c;
  font-weight: 760;
}

.annotation-body .token.function,
.annotation-body .token.class-name {
  color: #7fd7ff;
}

.annotation-body .token.builtin {
  color: #c5a7ff;
}

.annotation-body .token.decorator,
.annotation-body .token.property,
.annotation-body .token.attr-name,
.annotation-body .token.variable {
  color: #ffd37a;
}

.annotation-body .token.string,
.annotation-body .token.char {
  color: #9ee493;
}

.annotation-body .token.number,
.annotation-body .token.boolean,
.annotation-body .token.constant {
  color: #f7c873;
}

.annotation-body .token.operator,
.annotation-body .token.punctuation {
  color: #aeb8bd;
}

.annotation-body :not(pre) > code {
  padding: 0.12em 0.35em;
  border-radius: 4px;
  background: rgba(32, 37, 40, 0.08);
}

.annotation-body .table-scroll {
  width: 100%;
  max-width: 100%;
  margin: 14px 0;
  overflow-x: auto;
  border: 1px solid rgba(32, 37, 40, 0.13);
  border-radius: 8px;
  background: #ffffff;
}

.annotation-body table {
  width: 100%;
  min-width: 650px;
  border-collapse: separate;
  border-spacing: 0;
  background: #ffffff;
}

.annotation-body th,
.annotation-body td {
  padding: 9px 10px;
  border-right: 1px solid rgba(32, 37, 40, 0.1);
  border-bottom: 1px solid rgba(32, 37, 40, 0.1);
  color: #273034;
  font-size: 0.78rem;
  line-height: 1.35;
  text-align: left;
  vertical-align: top;
}

.annotation-body th {
  background: color-mix(in srgb, var(--card-accent, var(--teal)) 8%, #ffffff);
  color: #202528;
  font-weight: 800;
}

.annotation-body th:last-child,
.annotation-body td:last-child {
  border-right: 0;
}

.annotation-body tbody tr:nth-child(even) td {
  background: rgba(32, 37, 40, 0.025);
}

.annotation-body tr:last-child td {
  border-bottom: 0;
}

.annotation-body .math-inline {
  display: inline-block;
  pointer-events: none;
  user-select: none;
  vertical-align: -0.16em;
}

.annotation-body .math-inline.is-wide {
  display: block;
  max-width: 100%;
  margin: 10px 0;
  overflow-x: auto;
  overflow-y: hidden;
  vertical-align: middle;
}

.annotation-body .math-display {
  display: block;
  max-width: 100%;
  margin: 13px 0;
  overflow-x: auto;
  overflow-y: hidden;
  pointer-events: none;
  user-select: none;
}

.annotation-body .katex {
  color: currentColor;
  font-size: 1em;
}

.annotation-body .katex * {
  user-select: none;
}

.annotation-body .math-inline.is-wide .katex-display,
.annotation-body .math-display .katex-display {
  margin: 0;
  width: max-content;
}

.annotation-body figure {
  margin: 16px 0 4px;
}

.annotation-body .annotation-media-pair {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
  align-items: center;
  gap: 16px;
  margin: 16px 0;
}

.annotation-body .annotation-media-pair p,
.annotation-body .annotation-media-pair figure {
  margin: 0;
}

.annotation-body .annotation-media-pair img {
  max-height: min(360px, 44vh);
}

.annotation-body img {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: min(460px, 56vh);
  margin-right: auto;
  margin-left: auto;
  border: 1px solid rgba(32, 37, 40, 0.12);
  border-radius: 6px;
  background: #f9faf7;
  object-fit: contain;
}

.annotation-body img.is-zoomable {
  cursor: zoom-in;
  transition: border-color 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

.annotation-body img.is-zoomable:hover {
  border-color: color-mix(in srgb, var(--card-accent, var(--teal)) 44%, rgba(32, 37, 40, 0.12));
  box-shadow: 0 10px 28px rgba(32, 37, 40, 0.12);
}

.annotation-body img.is-zoomable:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--card-accent, var(--teal)) 44%, transparent);
  outline-offset: 4px;
}

.annotation-body img[src$="002-modeling-capability-residual-stream.png"] {
  max-height: min(320px, 39vh);
}

.annotation-body img[src$="003-future-hardware-efficiency-nvidia-compute-specs.png"],
.annotation-body img[src$="003-future-hardware-efficiency-blackwell-specs.png"] {
  max-height: min(360px, 44vh);
}

.annotation-body img[src$="036-fp4-scale-absorption-fp8-scaling.png"] {
  max-height: min(330px, 40vh);
}

.annotation-body figcaption {
  margin-top: 7px;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.35;
}

.notes-drawer {
  position: fixed;
  top: var(--notes-drawer-top, calc(var(--reader-header-height) + 8px));
  right: auto;
  left: var(--notes-drawer-left, auto);
  z-index: 30;
  flex-direction: column;
  width: min(640px, calc(100vw - 36px));
  max-height: calc(100vh - var(--reader-header-height) - 26px);
  overflow: visible;
  padding: 0;
  border: 1px solid rgba(32, 37, 40, 0.13);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.97);
  box-shadow: var(--shadow);
  display: none;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-6px);
  transform-origin: var(--notes-drawer-origin, 50% 0);
  transition: opacity 120ms ease, transform 120ms ease;
  visibility: hidden;
  overscroll-behavior: contain;
}

.notes-drawer::before,
.notes-drawer::after {
  content: "";
  position: absolute;
  left: var(--notes-drawer-caret-x, 50%);
  pointer-events: none;
}

.notes-drawer::before {
  top: -9px;
  margin-left: -10px;
  border-right: 10px solid transparent;
  border-bottom: 10px solid rgba(32, 37, 40, 0.13);
  border-left: 10px solid transparent;
}

.notes-drawer::after {
  top: -8px;
  margin-left: -9px;
  border-right: 9px solid transparent;
  border-bottom: 9px solid rgba(255, 255, 255, 0.97);
  border-left: 9px solid transparent;
}

.notes-drawer.is-open {
  display: flex;
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
  visibility: visible;
}

.guide-disclosure {
  position: fixed;
  top: var(--guide-disclosure-top, calc(var(--reader-header-height) + 8px));
  left: var(--guide-disclosure-left, 18px);
  z-index: 35;
  display: none;
  flex-direction: column;
  width: min(620px, calc(100vw - 36px));
  max-height: calc(100vh - var(--reader-header-height) - 26px);
  overflow: visible;
  padding: 0;
  border: 1px solid rgba(32, 37, 40, 0.13);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-6px);
  transform-origin: var(--guide-disclosure-origin, 50% 0);
  transition: opacity 120ms ease, transform 120ms ease;
  visibility: hidden;
  overscroll-behavior: contain;
}

.guide-disclosure::before,
.guide-disclosure::after {
  content: "";
  position: absolute;
  left: var(--guide-disclosure-caret-x, 24px);
  pointer-events: none;
}

.guide-disclosure::before {
  top: -9px;
  margin-left: -10px;
  border-right: 10px solid transparent;
  border-bottom: 10px solid rgba(32, 37, 40, 0.13);
  border-left: 10px solid transparent;
}

.guide-disclosure::after {
  top: -8px;
  margin-left: -9px;
  border-right: 9px solid transparent;
  border-bottom: 9px solid rgba(255, 255, 255, 0.98);
  border-left: 9px solid transparent;
}

.guide-disclosure.is-open {
  display: flex;
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
  visibility: visible;
}

.guide-disclosure-header {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 20px 16px;
  border-bottom: 1px solid rgba(32, 37, 40, 0.1);
  background:
    linear-gradient(90deg, rgba(159, 40, 66, 0.07), transparent 58%),
    linear-gradient(180deg, rgba(249, 250, 247, 0.94), rgba(255, 255, 255, 0.96));
}

.guide-disclosure-header h1 {
  margin: 4px 0 0;
  font-size: 1.32rem;
  line-height: 1.14;
  letter-spacing: 0;
}

.guide-disclosure-body {
  display: grid;
  gap: 16px;
  min-height: 0;
  overflow: auto;
  padding: 18px 20px 20px;
}

.disclosure-section {
  display: grid;
  gap: 9px;
}

.disclosure-section h2 {
  margin: 0;
  color: #2a3034;
  font-size: 0.98rem;
  font-weight: 840;
  letter-spacing: 0;
}

.disclosure-section p {
  margin: 0;
  color: #30383d;
  font-size: 0.94rem;
  line-height: 1.55;
}

.disclosure-section a {
  color: #0c7b72;
  font-weight: 780;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.social-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(142px, 178px));
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  width: 100%;
  min-width: 0;
  min-height: 36px;
  padding: 7px 10px;
  border: 1px solid rgba(32, 37, 40, 0.12);
  border-radius: 8px;
  background: rgba(249, 250, 247, 0.86);
  color: #303638;
  font-size: 0.9rem;
  font-weight: 780;
  text-decoration: none;
  transition: border-color 130ms ease, background 130ms ease, transform 130ms ease;
}

.social-link span:last-child {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.social-link:hover,
.social-link:focus-visible {
  border-color: rgba(159, 40, 66, 0.26);
  background: rgba(159, 40, 66, 0.07);
  color: var(--accent-main);
}

.social-link:focus-visible {
  outline: 2px solid rgba(159, 40, 66, 0.16);
  outline-offset: 2px;
}

.social-mark,
.social-link img {
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  border-radius: 7px;
}

.social-mark {
  display: inline-grid;
  place-items: center;
  background: #15191c;
  color: #ffffff;
  font-size: 0.78rem;
  font-weight: 880;
  letter-spacing: 0;
}

.social-mark-linkedin {
  background: #0a66c2;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.74rem;
}

.social-link img {
  object-fit: cover;
  border: 1px solid rgba(32, 37, 40, 0.12);
}

.project-status {
  position: relative;
  padding: 13px 15px 13px 18px;
  border: 1px solid rgba(32, 37, 40, 0.1);
  border-radius: 8px;
  background:
    linear-gradient(90deg, rgba(34, 163, 159, 0.1), transparent 58%),
    rgba(249, 250, 247, 0.88);
  box-shadow: inset 4px 0 0 var(--teal);
}

.drawer-header {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 20px 16px;
  border-bottom: 1px solid rgba(32, 37, 40, 0.1);
  background: linear-gradient(180deg, rgba(249, 250, 247, 0.92), rgba(255, 255, 255, 0.94));
}

.drawer-header h1 {
  margin: 4px 0 0;
  font-size: 1.35rem;
  line-height: 1.15;
  letter-spacing: 0;
}

.note-search {
  display: grid;
  gap: 8px;
  padding: 14px 14px 12px;
  border-bottom: 1px solid rgba(32, 37, 40, 0.09);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(249, 250, 247, 0.82));
}

.note-search-field {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr) 30px;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 8px 0 12px;
  border: 1px solid rgba(32, 37, 40, 0.14);
  border-radius: 8px;
  background: #ffffff;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.74) inset,
    0 8px 18px rgba(26, 31, 34, 0.04);
  transition: border-color 130ms ease, box-shadow 130ms ease;
}

.note-search-field:focus-within {
  border-color: rgba(164, 33, 61, 0.42);
  box-shadow:
    0 0 0 3px rgba(164, 33, 61, 0.09),
    0 1px 0 rgba(255, 255, 255, 0.74) inset;
}

.note-search-icon {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: var(--muted);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.note-search input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 0.92rem;
  font-weight: 720;
}

.note-search input::placeholder {
  color: color-mix(in srgb, var(--muted) 74%, #ffffff);
}

.note-search input::-webkit-search-cancel-button {
  appearance: none;
  -webkit-appearance: none;
}

.note-search-clear {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid rgba(32, 37, 40, 0.12);
  border-radius: 7px;
  background: rgba(249, 250, 247, 0.96);
  color: var(--muted);
  cursor: pointer;
  font-size: 1.05rem;
  font-weight: 820;
  line-height: 1;
}

.note-search-clear:hover {
  border-color: rgba(164, 33, 61, 0.28);
  color: var(--accent-strong);
}

.note-search-clear[hidden] {
  display: none;
}

.note-search-summary {
  min-height: 16px;
  margin: 0;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 760;
}

.note-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 14px;
  -webkit-overflow-scrolling: touch;
}

.note-chip {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  width: 100%;
  min-width: 0;
  min-height: 68px;
  padding: 12px 13px 12px 18px;
  border: 1px solid rgba(32, 37, 40, 0.12);
  border-radius: 8px;
  overflow: hidden;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--accent) 7%, transparent), transparent 42%),
    #ffffff;
  cursor: pointer;
  text-align: left;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.7) inset;
  transition: border-color 120ms ease, box-shadow 120ms ease, transform 120ms ease;
}

.note-chip::before {
  content: "";
  position: absolute;
  top: -1px;
  bottom: -1px;
  left: -1px;
  width: 6px;
  border-radius: 8px 0 0 8px;
  background: var(--accent);
}

.note-chip:hover {
  border-color: color-mix(in srgb, var(--accent) 48%, rgba(32, 37, 40, 0.18));
  box-shadow: 0 12px 28px rgba(26, 31, 34, 0.09);
  transform: translateY(-1px);
}

.note-chip-main {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
}

.note-chip-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.note-chip strong {
  flex: 1 1 auto;
  display: block;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.98rem;
  line-height: 1.2;
}

.note-chip-match-count {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 0 8px;
  border: 1px solid rgba(32, 37, 40, 0.1);
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 10%, #ffffff);
  color: color-mix(in srgb, var(--accent) 74%, #202528);
  font-size: 0.7rem;
  font-weight: 830;
  letter-spacing: 0;
  white-space: nowrap;
}

.note-chip-open-state {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 0 8px;
  border: 1px solid color-mix(in srgb, var(--accent) 45%, rgba(32, 37, 40, 0.12));
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 14%, #ffffff);
  color: color-mix(in srgb, var(--accent) 76%, #202528);
  font-size: 0.72rem;
  font-weight: 860;
  letter-spacing: 0;
}

.note-chip-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 5px;
}

.note-chip-meta span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 750;
}

.note-chip-meta span + span::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  margin: 0 6px 1px 0;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 62%, var(--muted));
}

.note-chip-snippet {
  display: -webkit-box;
  margin-top: 10px;
  max-height: calc(2 * 1.42em + 2px);
  overflow: hidden;
  color: color-mix(in srgb, var(--ink) 82%, var(--muted));
  font-size: 0.86rem;
  font-weight: 610;
  line-height: 1.42;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.note-chip-snippet mark {
  padding: 0 2px;
  border-radius: 4px;
  background: color-mix(in srgb, var(--accent) 28%, #fff4a8);
  color: color-mix(in srgb, var(--accent) 62%, #202528);
  font-weight: 860;
}

.note-chip.is-search-result {
  min-height: 116px;
  padding-top: 14px;
  padding-bottom: 15px;
  align-items: flex-start;
}

.note-list.is-searching {
  gap: 10px;
}

.note-search-empty {
  display: grid;
  gap: 5px;
  min-height: 116px;
  place-content: center;
  padding: 18px;
  border: 1px dashed rgba(32, 37, 40, 0.18);
  border-radius: 8px;
  background: rgba(249, 250, 247, 0.72);
  text-align: center;
}

.note-search-empty strong {
  color: var(--ink);
  font-size: 0.98rem;
}

.note-search-empty span {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 650;
}

.note-chip.is-open {
  border-color: color-mix(in srgb, var(--accent) 54%, rgba(32, 37, 40, 0.14));
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--accent) 12%, transparent), transparent 50%),
    #ffffff;
}

.note-chip.is-active {
  border-color: color-mix(in srgb, var(--accent) 62%, #000);
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--accent) 13%, transparent), transparent 48%),
    #ffffff;
  box-shadow: inset 0 0 0 2px color-mix(in srgb, var(--accent) 54%, transparent), 0 1px 0 rgba(255, 255, 255, 0.7) inset;
}

body.is-lightbox-open {
  overflow: hidden;
}

.image-lightbox {
  position: fixed;
  inset: 0;
  z-index: 5000;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(18, 23, 26, 0.72);
  opacity: 0;
  backdrop-filter: blur(8px);
  transition: opacity 140ms ease;
}

.image-lightbox[hidden] {
  display: none;
}

.image-lightbox.is-open {
  opacity: 1;
}

.image-lightbox-panel {
  position: relative;
  display: grid;
  gap: 12px;
  justify-items: end;
  max-width: min(1280px, calc(100vw - 48px));
  max-height: calc(100dvh - 48px);
}

.image-lightbox-figure {
  display: grid;
  gap: 10px;
  margin: 0;
  min-height: 0;
}

.image-lightbox-figure img {
  display: block;
  width: auto;
  height: auto;
  max-width: min(1280px, calc(100vw - 48px));
  max-height: calc(100dvh - 156px);
  object-fit: contain;
  border: 1px solid rgba(255, 255, 255, 0.58);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 26px 80px rgba(0, 0, 0, 0.34);
}

.image-lightbox-figure figcaption {
  max-width: min(960px, calc(100vw - 72px));
  justify-self: center;
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.86rem;
  font-weight: 650;
  line-height: 1.35;
  text-align: center;
}

.image-lightbox-close {
  position: static;
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border: 2px solid #2e2325;
  border-radius: 8px;
  background: #cf2f38;
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.24);
  cursor: pointer;
  font-size: 2rem;
  font-weight: 900;
  line-height: 1;
}

.image-lightbox-close:hover,
.image-lightbox-close:focus-visible {
  background: #b92731;
  outline: 3px solid rgba(255, 255, 255, 0.72);
  outline-offset: 3px;
}

@media (max-width: 980px) {
  .reader-header {
    grid-template-columns: 1fr;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
  }

  .reader-title,
  .reader-center-controls,
  .reader-controls {
    width: 100%;
  }

  .reader-center-controls {
    justify-content: center;
  }

  .reader-controls {
    gap: 6px;
    justify-content: space-between;
  }

  .viewer-stage {
    padding: 20px 10px 70px;
  }

  .pages {
    justify-items: center;
  }

  .pdf-page {
    width: min(calc(100vw - 20px), var(--pdf-target-width));
    min-width: 0;
  }

  .annotation-card {
    max-height: 460px;
  }

  .notes-drawer {
    right: auto;
    width: calc(100vw - 24px);
    max-height: calc(100vh - var(--notes-drawer-top, 142px) - 12px);
  }
}

@media (max-width: 640px) {
  html,
  body {
    overflow-x: hidden;
  }

  .reader-header {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    display: grid;
    grid-template-columns: 44px minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: 10px;
    min-height: var(--reader-header-height);
    padding: 8px 10px;
    transition:
      transform 340ms cubic-bezier(0.4, 0, 0.2, 1),
      opacity 300ms ease;
  }

  .reader-title {
    display: flex;
    justify-self: stretch;
    width: 44px;
    min-width: 44px;
    overflow: visible;
  }

  .reader-title strong {
    display: none;
  }

  .guide-info-button {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    font-size: 1.14rem;
  }

  .reader-center-controls,
  .reader-controls {
    width: 100%;
    max-width: none;
  }

  .reader-center-controls .toolbar-divider,
  .reader-center-controls .zoom-controls,
  .reader-controls .checkbox-control,
  .reader-controls .open-count,
  .reader-controls .close-all-button {
    display: none;
  }

  .reader-center-controls {
    justify-self: stretch;
    justify-content: center;
    min-width: 0;
    min-height: 44px;
    padding: 0 8px;
  }

  .page-jump {
    justify-content: center;
    width: 100%;
    gap: 5px;
  }

  .page-input {
    width: 38px;
  }

  .reader-controls {
    justify-self: stretch;
    justify-content: stretch;
  }

  .secondary-button {
    width: 100%;
    min-height: 44px;
  }

  .pdf-pane {
    min-height: 100vh;
    padding-top: var(--reader-header-height);
  }

  .viewer-stage {
    min-height: 100vh;
    overflow: hidden;
    padding: 0 0 70px;
  }

  .pages {
    width: 126vw;
    margin-left: 50%;
    transform: translateX(-50%);
    justify-items: center;
  }

  .pdf-page {
    width: 100%;
    max-width: none;
    box-shadow: none;
  }

  .annotation-card {
    width: 94.5vw;
    max-width: none;
    max-height: calc(100dvh - var(--reader-viewport-top, 0px) - 28px);
  }

  .notes-drawer {
    width: 95vw;
    max-height: calc(100dvh - var(--notes-drawer-top, 64px) - 8px);
  }

  .guide-disclosure {
    width: 95vw;
    max-height: calc(100dvh - var(--guide-disclosure-top, 64px) - 8px);
  }

  .guide-disclosure-header {
    padding: 17px 16px 14px;
  }

  .guide-disclosure-body {
    overflow: hidden;
    padding: 15px 16px 17px;
  }

  .social-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }

  .social-link {
    min-height: 42px;
    padding: 7px 8px;
    font-size: 0.86rem;
  }

  .social-link:nth-child(3):last-child {
    grid-column: 1 / -1;
    justify-self: center;
    width: calc((100% - 8px) / 2);
  }

  body.mobile-header-hidden .reader-header {
    opacity: 0;
    pointer-events: none;
    transform: translateY(calc(-100% - 1px));
  }

  body.has-open-card .reader-header {
    opacity: 0;
    pointer-events: none;
    transform: translateY(calc(-100% - 1px));
  }

  .image-lightbox {
    padding: 12px;
  }

  .image-lightbox-panel,
  .image-lightbox-figure img {
    max-width: calc(100vw - 24px);
  }

  .image-lightbox-figure img {
    max-height: calc(100dvh - 120px);
  }

  .image-lightbox-close {
    width: 44px;
    height: 44px;
  }
}