@font-face {
  font-family: "Mistrully";
  src: url("./Mistrully.otf") format("opentype");
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

:root {
    --primary: #d97706;
    --primary-light: #f59e0b;
    --primary-dark: #b45309;
    --primary-50: #fffbeb;
    --primary-100: #fef3c7;
    --secondary: #f59e0b;
    --secondary-light: #fbbf24;
    --accent: #10b981;
    --accent-light: #34d399;

    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    --white: #ffffff;
    --black: #000000;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --font-hand: 'Caveat', cursive;

    /* Annotation ink colors */
    --ink-red: #dc2626;
    --ink-blue: #2563eb;
    --ink-green: #16a34a;
    --highlighter-yellow: rgba(250, 204, 21, 0.35);
    --highlighter-green: rgba(74, 222, 128, 0.25);
    --highlighter-pink: rgba(244, 114, 182, 0.25);
    --paper-line: rgba(59,130,246,0.06);

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0,0,0,0.15);
    --shadow-glow: 0 0 40px rgba(217,119,6,0.15);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

    --container-max: 1200px;
    --section-padding: 120px;
}

/* === Reset & Base === */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    color: var(--gray-800);
    background: var(--white);
    line-height: 1.7;
    overflow-x: hidden;
}

/* Ink trail canvas */
#inkTrailCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

/* === Container === */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* === Section === */
.section {
    padding: var(--section-padding) 0;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    font-family: var(--font-hand);
    text-transform: none;
    letter-spacing: 0.02em;
    color: var(--ink-red);
    background: transparent;
    padding: 4px 0;
    border-radius: 0;
    margin-bottom: 16px;
    border-bottom: 2px solid rgba(220,38,38,0.2);
}

.section-label i {
    font-size: 0.8em;
    opacity: 0.7;
}

.hand-underline {
    display: flex;
    justify-content: center;
    margin-top: -4px;
    margin-bottom: 4px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
    position: relative;
}

.section-desc {
    font-size: 1.15rem;
    color: var(--gray-500);
    max-width: 640px;
    margin: 0 auto;
    line-height: 1.6;
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-sans);
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    white-space: nowrap;
}

.btn i {
    font-size: 0.9em;
}

.btn-sm {
    font-size: 0.85rem;
    padding: 8px 16px;
}

.btn-lg {
    font-size: 1rem;
    padding: 14px 28px;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-dark {
    background: var(--gray-900);
    color: var(--white);
    border-color: var(--gray-900);
}

.btn-dark:hover {
    background: var(--gray-700);
    border-color: var(--gray-700);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--gray-700);
    border-color: var(--gray-300);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

.btn-white {
    background: var(--white);
    color: var(--gray-900);
    border-color: var(--white);
    box-shadow: var(--shadow-lg);
}

.btn-white:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.btn-outline-white {
    background: transparent;
    color: var(--white);
    border-color: rgba(255,255,255,0.4);
}

.btn-outline-white:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.8);
    transform: translateY(-2px);
}

.btn-ghost {
    background: transparent;
    color: rgba(255,255,255,0.9);
    border-color: transparent;
}

.btn-ghost:hover {
    color: var(--white);
    background: rgba(255,255,255,0.08);
}

.btn-ghost-dark {
    background: transparent;
    color: var(--gray-600);
    border-color: transparent;
}

.btn-ghost-dark:hover {
    color: var(--gray-900);
    background: rgba(0,0,0,0.05);
}

/* === Navigation === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    padding: 10px 0;
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 36px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--gray-900);
    transition: var(--transition);
}

.navbar.scrolled .nav-logo {
    color: var(--gray-900);
}

.nav-logo .logo-annotate,
.nav-logo .logo-gpt {
    color: var(--gray-900);
    transition: var(--transition);
}

.navbar.scrolled .logo-annotate,
.navbar.scrolled .logo-gpt {
    color: var(--gray-900);
}

.logo-blob-wrap {
    position: relative;
    display: inline-flex;
    align-items: baseline;
    padding: 2px 6px 4px 2px;
    line-height: 1;
    font-size: 2rem;
}

.logo-container {
    position: relative;
    width: fit-content;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    padding: 5% 0;
}

.logo-container .logo-blob-wrap {
    width: 100%;
    height: 100%;
    font-size: clamp(3rem, 16vw, 10rem);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.logo-pen {
    position: absolute;
    bottom: -5%;
    left: -25%;
    width: 40%;
    height: 150%;
}

.logo-blob {
    position: absolute;
    bottom: -5%;
    left: -5%;
    width: 120%;
    height: 120%;
    object-fit: contain;
    opacity: 0.5;
    pointer-events: none;
    z-index: 0;
    transform: scale(1.2);
}

.logo-annotate {
    font-family: 'Mistrully';
    font-size: 1em;
    font-weight: 300;
    position: relative;
    z-index: 1;
    line-height: 1;
}

.logo-gpt {
    font-family: 'Inter', sans-serif;
    font-size: 0.35em;
    font-weight: 800;
    position: relative;
    z-index: 1;
    margin-left: 0.05em;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    align-self: flex-end;
    margin-bottom: 0.05em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--gray-500);
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--gray-900);
    background: rgba(0,0,0,0.05);
}

.navbar.scrolled .nav-links a {
    color: var(--gray-500);
}

.navbar.scrolled .nav-links a:hover {
    color: var(--primary);
    background: var(--primary-50);
}

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

.navbar:not(.scrolled) .nav-actions .btn-outline {
    color: var(--gray-700);
    border-color: var(--gray-300);
}

.navbar:not(.scrolled) .nav-actions .btn-outline:hover {
    color: var(--gray-900);
    border-color: var(--gray-500);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    margin-left: auto;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: var(--transition);
}

.navbar.scrolled .nav-toggle span {
    background: var(--gray-700);
}

/* === Hero === */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    /* Warm parchment / aged-paper base — lightened for readability */
    background:
        linear-gradient(175deg, #fdfcfa 0%, #faf8f4 30%, #f7f4ef 60%, #f3efe8 100%);
}

/* Ruled notebook lines */
.hero-gradient::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        /* Horizontal ruled lines */
        repeating-linear-gradient(
            to bottom,
            transparent,
            transparent 31px,
            rgba(100, 130, 180, 0.12) 31px,
            rgba(100, 130, 180, 0.12) 32px
        ),
        /* Red margin line */
        linear-gradient(to right,
            transparent 7.5%,
            rgba(220, 50, 50, 0.18) 7.5%,
            rgba(220, 50, 50, 0.18) calc(7.5% + 1.5px),
            transparent calc(7.5% + 1.5px)
        );
    pointer-events: none;
}

/* Subtle texture overlay */
.hero-gradient::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
        /* Fold crease */
        linear-gradient(to right, transparent 49.5%, rgba(0,0,0,0.03) 49.8%, rgba(0,0,0,0.05) 50%, rgba(0,0,0,0.03) 50.2%, transparent 50.5%),
        /* Slight vignette on edges for depth */
        radial-gradient(ellipse at center, transparent 50%, rgba(180, 160, 130, 0.15) 100%);
    pointer-events: none;
}

#heroCanvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 1;
}

canvas.pdf-blur {
  filter: blur(3px);
  transform: scale(1.02);
  transition: filter 0.35s ease;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 120px 24px 80px;
    max-width: 900px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255,255,255,0.6);
    border: 1px solid rgba(0,0,0,0.08);
    backdrop-filter: blur(10px);
    padding: 8px 20px;
    border-radius: var(--radius-full);
    color: var(--gray-700);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 36px;
}

.hero-badge i {
    color: var(--ink-red);
    font-size: 0.9rem;
}

.hero-title {
    font-size: clamp(3.5rem, 8vw, 6rem);
    font-weight: 900;
    line-height: 1;
    margin-bottom: 24px;
    letter-spacing: -0.03em;
}

.title-annotate {
    color: var(--gray-900);
}

.title-gpt {
    background: linear-gradient(135deg, var(--ink-red), #c2410c);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.15rem, 2.5vw, 1.5rem);
    color: var(--gray-600);
    font-weight: 400;
    line-height: 1.5;
    margin-bottom: 20px;
}

.highlight-text {
    color: var(--gray-900);
    font-weight: 600;
}

.hero-authors {
    font-size: 1.05rem;
    color: var(--gray-600);
    font-weight: 500;
    margin-bottom: 4px;
}

.hero-affiliation {
    font-size: 0.9rem;
    color: var(--gray-400);
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
}

/* Social share icons in hero: ensure SVG fills the clickable circle and hover doesn't cover it */
.social-share {
    display: flex;
    gap: 10px;
    justify-content: center;
    align-items: center;
}

/* Share popup wrapper and toggle button */
.share-container {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.share-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    position: relative;
}


#shareToggle {
    margin-top: 24px;
    margin-bottom: 50px;
}

.share-popup {
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    padding: 10px;
    box-shadow: var(--shadow-xl);
    display: none;
    z-index: 100;
}

.share-popup[aria-hidden="false"],
.share-popup.open {
    display: block;
}

.share-popup::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 14px;
    height: 8px;
    background: transparent;
}

/* Visually hidden helper */
.visually-hidden { position: absolute !important; height: 1px; width: 1px; overflow: hidden; clip: rect(1px, 1px, 1px, 1px); white-space: nowrap; }

.social-circle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: transparent;
    border: 1px solid var(--gray-200);
    padding: 0;
    box-shadow: var(--shadow-sm);
    transition: transform 160ms ease, box-shadow 160ms ease;
    overflow: hidden;
}

.social-circle img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    border-radius: 50%;
    transition: transform 180ms ease, filter 180ms ease;
}

.social-circle:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.social-circle:hover img {
    transform: scale(1.02);
    filter: none;
}

/* Keep brand-specific subtle borders, but avoid overwriting the SVG artwork on hover */
.social-circle.facebook { border-color: rgba(24,119,242,0.16); }
.social-circle.x { border-color: rgba(29,161,242,0.16); }
.social-circle.reddit { border-color: rgba(255,69,0,0.16); }
.social-circle.linkedin { border-color: rgba(10,102,194,0.16); }
.social-circle.tumblr { border-color: rgba(53,70,92,0.16); }

/* Focus states for accessibility */
.social-circle:focus {
    outline: none;
    box-shadow: 0 0 0 4px rgba(217,119,6,0.12), var(--shadow-lg);
}

@media (max-width: 480px) {
    .social-circle { width: 40px; height: 40px; }
}

.ref {
    color: var(--primary-light);
    font-weight: 500;
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 36px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--gray-400);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--gray-400), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.7); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* === Paper texture background === */
.paper-bg,
.abstract,
.contributions,
.interface,
.comparison,
.discussion {
    background-image:
        repeating-linear-gradient(
            transparent,
            transparent 31px,
            var(--paper-line) 31px,
            var(--paper-line) 32px
        );
    background-size: 100% 32px;
}

/* Red margin line (like college-ruled paper) */
.abstract .container,
.contributions .container {
    border-left: 2px solid rgba(220,38,38,0.08);
    padding-left: 32px;
}

/* === Teaser === */
.teaser {
    padding: 80px 0;
    background: var(--gray-50);
}

.teaser-wrapper {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-200);
}

.teaser-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.figure-image-pair {
    display: flex;
    gap: 16px;
    width: 100%;
}

.figure-image-pair .figure-image {
    flex: 1;
    min-width: 0;
}

.teaser-caption {
    padding: 20px 28px;
    font-size: 0.9rem;
    color: var(--gray-500);
    line-height: 1.6;
    border-top: 1px solid var(--gray-100);
}

.teaser-caption strong {
    color: var(--gray-700);
}

/* === Demo Video === */
.demo {
    padding: 80px 0;
    background: var(--white);
}

.demo-video-wrapper {
    max-width: 960px;
    margin: 0 auto;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-200);
    background: var(--black);
}

.demo-video {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-xl);
}

/* === Abstract === */
.abstract {
    background: var(--white);
}

.abstract-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.abstract-icon {
    font-size: 2.5rem;
    color: var(--primary-100);
    margin-bottom: 24px;
    text-align: center;
}

/* Margin notes — handwritten decorations */
.margin-note {
    position: absolute;
    font-family: var(--font-hand);
    color: var(--ink-red);
    opacity: 0.55;
    pointer-events: none;
    white-space: nowrap;
    transition: opacity 0.3s ease;
    z-index: 20;
}

.abstract-content:hover .margin-note,
.challenge-grid:hover .margin-note,
.solution-box:hover .margin-note,
.contributions-grid:hover .margin-note,
.pipeline:hover .margin-note,
.interface-item:hover .margin-note,
.annotation-taxonomy:hover .margin-note,
.workflows-section:hover .margin-note,
.comparison-visual:hover .margin-note,
.beyond-card:hover .margin-note,
.implication-card:hover .margin-note,
.finding-card:hover .margin-note,
.system-figure:hover .margin-note,
.results-figure:hover .margin-note {
    opacity: 0.85;
}

.margin-note-left {
    left: -80px;
    top: 80px;
    display: flex;
    align-items: center;
    gap: 4px;
    transform: rotate(-3deg);
    font-size: 1rem;
}

/* Right-side margin notes */
.margin-note-right {
    right: -70px;
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 1rem;
}

/* Top-right corner notes */
.margin-note-topright {
    right: -10px;
    top: -10px;
    transform: rotate(2deg);
    font-size: 0.95rem;
}

/* Bottom-right notes */
.margin-note-bottomright {
    right: -10px;
    bottom: 10px;
    transform: rotate(-1deg);
    font-size: 0.95rem;
}

/* Inline margin notes (no absolute positioning) */
.margin-note-inline {
    position: relative;
    display: inline-block;
    font-family: var(--font-hand);
    color: var(--ink-red);
    opacity: 0.6;
    font-size: 0.95rem;
    font-weight: 600;
    margin-left: 8px;
    transform: rotate(-2deg);
    pointer-events: none;
}

/* Arrow decorations for margin notes */
.margin-note-arrow {
    font-size: 1.2rem;
    line-height: 1;
    margin-right: 3px;
}

/* Underline style note */
.margin-note-underline {
    border-bottom: 2px wavy var(--ink-red);
    padding-bottom: 1px;
}

/* Star marker */
.margin-note-star::before {
    content: '\2605';
    margin-right: 4px;
    font-size: 0.9em;
}

.margin-note-bracket {
    font-size: 2rem;
    line-height: 1;
    font-weight: 300;
}

.margin-note-text {
    font-size: 1.1rem;
    font-weight: 600;
}

.abstract-text {
    font-size: 1.1rem;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 20px;
}

.abstract-text strong {
    color: var(--gray-800);
    font-weight: 600;
}

.abstract-text em {
    color: var(--primary-dark);
    font-style: italic;
}

.keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 32px;
    justify-content: center;
}

.keyword {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 500;
    font-family: var(--font-hand);
    color: var(--gray-700);
    background: var(--highlighter-yellow);
    padding: 4px 12px;
    border-radius: 2px;
    border: none;
    transform: rotate(var(--keyword-rotate, 0deg));
    transition: var(--transition);
}

.keyword:nth-child(1) { --keyword-rotate: -1deg; }
.keyword:nth-child(2) { --keyword-rotate: 0.5deg; }
.keyword:nth-child(3) { --keyword-rotate: -0.8deg; background: var(--highlighter-green); }
.keyword:nth-child(4) { --keyword-rotate: 1.2deg; }
.keyword:nth-child(5) { --keyword-rotate: -0.3deg; background: var(--highlighter-pink); }
.keyword:nth-child(6) { --keyword-rotate: 0.8deg; background: var(--highlighter-green); }

.keyword:hover {
    transform: rotate(0deg) scale(1.08);
}

/* === Motivation / Challenges === */
.motivation {
    background: var(--gray-50);
}

.challenge-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.challenge-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.challenge-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--gray-300);
}

.challenge-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 2px solid var(--ink-red);
    border-radius: var(--radius-full);
    font-size: 1.5rem;
    color: var(--ink-red);
    position: relative;
}

/* Hand-drawn circle effect on challenge icons */
.challenge-icon::after {
    content: '';
    position: absolute;
    inset: -4px;
    border: 2px dashed rgba(220,38,38,0.2);
    border-radius: var(--radius-full);
    transform: rotate(5deg);
}

.challenge-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}

.challenge-card p {
    font-size: 0.95rem;
    color: var(--gray-500);
    line-height: 1.6;
}

.motivation-solution {
    text-align: center;
}

.solution-arrow {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 24px;
    animation: arrowBounce 2s ease-in-out infinite;
}

@keyframes arrowBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(8px); }
}

.solution-box {
    max-width: 800px;
    margin: 0 auto;
    background: linear-gradient(135deg, var(--primary-50), #fef3c7);
    border: 1px solid var(--primary-100);
    border-radius: var(--radius-lg);
    padding: 36px 40px;
    text-align: left;
}

.solution-box h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 12px;
}

.solution-box h3 i {
    margin-right: 8px;
    color: var(--secondary);
}

.solution-box p {
    font-size: 1rem;
    color: var(--gray-700);
    line-height: 1.7;
}

/* === Contributions === */
.contributions {
    background: var(--white);
}

.contributions-grid {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contribution-card {
    display: flex;
    align-items: center;
    gap: 32px;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    padding: 36px 40px;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.contribution-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--primary);
    border-radius: 0 4px 4px 0;
    opacity: 0;
    transition: var(--transition);
}

.contribution-card:hover {
    border-color: var(--primary-100);
    box-shadow: var(--shadow-md);
}

.contribution-card:hover::before {
    opacity: 1;
}

.contribution-number {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary-100);
    font-family: var(--font-mono);
    flex-shrink: 0;
    line-height: 1;
}

/* Circled annotation numbers — like hand-drawn circles */
.annotation-circled {
    position: relative;
    color: var(--ink-red) !important;
    font-family: var(--font-hand) !important;
    font-size: 2rem !important;
}

.annotation-circled::before {
    content: '';
    position: absolute;
    inset: -10px -14px;
    border: 2.5px solid var(--ink-red);
    border-radius: 50%;
    opacity: 0.35;
    transform: rotate(-3deg);
}

.annotation-circled::after {
    content: '';
    position: absolute;
    inset: -8px -12px;
    border: 1.5px solid var(--ink-red);
    border-radius: 50% 48% 52% 50%;
    opacity: 0.15;
    transform: rotate(4deg);
}

.contribution-content {
    flex: 1;
}

.contribution-content h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.contribution-content p {
    font-size: 0.95rem;
    color: var(--gray-500);
    line-height: 1.6;
}

.contribution-icon {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: var(--white);
    border-radius: var(--radius-md);
    font-size: 1.3rem;
}

/* === System / Pipeline === */
.system {
    background: var(--gray-50);
}

.pipeline {
    max-width: 700px;
    margin: 0 auto 64px;
}

.pipeline-step {
    display: flex;
    align-items: flex-start;
    gap: 24px;
}

.step-marker {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: var(--white);
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: 1.1rem;
    box-shadow: 0 0 0 6px var(--primary-50);
}

.step-content h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
    margin-top: 2px;
}

.step-content p {
    font-size: 0.95rem;
    color: var(--gray-500);
    line-height: 1.6;
}

.pipeline-connector {
    width: 2px;
    height: 32px;
    background: linear-gradient(to bottom, var(--primary-light), var(--primary-100));
    margin-left: 23px;
    position: relative;
}

/* Ink drip effect on pipeline connectors */
.pipeline-connector::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: -2px;
    width: 6px;
    height: 6px;
    background: var(--primary-light);
    border-radius: 50%;
    opacity: 0.4;
}

/* === System Figure === */
.system-figure,
.results-figure,
.beyond-figure,
.comparison-visual {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-200);
}

/* Containers without margin notes get overflow hidden directly */
.beyond-figure {
    overflow: visible;
}

/* Containers with margin notes stay overflow visible;
   the canvas self-clips its corners instead */
.system-figure,
.results-figure,
.comparison-visual {
    overflow: visible;
}

.figure-image {
    width: 100%;
    display: block;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.figure-caption {
    padding: 18px 28px;
    font-size: 0.9rem;
    color: var(--gray-500);
    line-height: 1.6;
    border-top: 1px solid var(--gray-100);
}

.figure-caption strong {
    color: var(--gray-700);
}

.figure-caption em {
    color: var(--gray-600);
}

/* === Interface Gallery === */
.interface {
    background: var(--white);
}

.interface-gallery {
    display: flex;
    flex-direction: column;
    gap: 80px;
}

.interface-item {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
    align-items: center;
}

.interface-item.reverse {
    grid-template-columns: 1fr 1.2fr;
}

.interface-item.reverse .interface-img-wrapper {
    order: 2;
}

.interface-item.reverse .interface-info {
    order: 1;
}

.interface-img-wrapper {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-200);
}

.interface-img-wrapper .figure-image {
    border-radius: var(--radius-lg);
}

.interface-img-wrapper img {
    width: 100%;
    border-radius: var(--radius-lg);
    transition: transform 0.5s ease;
}

.interface-img-wrapper:hover img {
    transform: scale(1.02);
}

.interface-info h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 16px;
}

.interface-info p {
    font-size: 1rem;
    color: var(--gray-500);
    line-height: 1.7;
}

.state-badge,
.rating-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.state-waiting { background: #fef3c7; color: #92400e; }
.state-processing { background: #fed7aa; color: #9a3412; }
.state-done { background: #d1fae5; color: #065f46; }

.rating-badge.accept { background: #d1fae5; color: #065f46; }
.rating-badge.helpful { background: #fef3c7; color: #92400e; }
.rating-badge.reject { background: #fee2e2; color: #991b1b; }

/* === Results === */
.results {
    background: var(--gray-50);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    margin-bottom: 64px;
}

.stat-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-100);
}

.stat-value {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 8px;
    font-family: var(--font-hand);
}

.stat-label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 4px;
}

.stat-detail {
    font-size: 0.8rem;
    color: var(--gray-400);
}

.detail-counter {
    font-family: var(--font-hand);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--primary);
}

.stat-card-wide {
    grid-column: span 2;
}

.stat-triple {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    gap: 32px;
}

.stat-triple-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 60px;
}

.stat-triple-item .stat-value {
    font-size: 3rem;
}

.stat-sublabel {
    font-size: 0.8rem;
    font-weight: 400;
    margin-top: 4px;
    color: var(--gray-400);
}

.stat-sublabel.accept {
    color: var(--gray-400);
}

.stat-sublabel.reject {
    color: var(--gray-400);
}

.stat-sublabel.helpful {
    color: var(--gray-400);
}

/* === Annotation Taxonomy === */
.annotation-taxonomy {
    margin-bottom: 72px;
    padding: 48px;
    background: var(--white);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    position: relative;
}

.taxonomy-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}

.taxonomy-title i {
    color: var(--ink-red);
    margin-right: 8px;
    font-size: 1.3rem;
}

.taxonomy-intro {
    font-size: 1rem;
    color: var(--gray-500);
    line-height: 1.7;
    margin-bottom: 36px;
    max-width: 800px;
}

.taxonomy-dimensions {
    display: flex;
    flex-direction: column;
    gap: 48px;
}

.dimension-label {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.dimension-range {
    font-family: var(--font-hand);
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--ink-red);
    opacity: 0.7;
}

.dimension-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.taxonomy-card {
    padding: 24px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.taxonomy-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.taxonomy-card.telegraphic {
    border-left: 4px solid var(--highlighter-yellow);
    background: linear-gradient(135deg, rgba(251,191,36,0.04), transparent);
}

.taxonomy-card.explicit {
    border-left: 4px solid var(--ink-blue);
    background: linear-gradient(135deg, rgba(37,99,235,0.04), transparent);
}

.taxonomy-card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.taxonomy-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-size: 1rem;
}

.taxonomy-card.telegraphic .taxonomy-icon {
    background: rgba(251,191,36,0.15);
    color: #b45309;
}

.taxonomy-card.explicit .taxonomy-icon {
    background: rgba(37,99,235,0.1);
    color: var(--ink-blue);
}

.taxonomy-card-title {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--gray-800);
}

.taxonomy-card-desc {
    font-size: 0.9rem;
    color: var(--gray-500);
    line-height: 1.6;
    margin-bottom: 14px;
}

.taxonomy-counts {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.count-pill {
    font-size: 0.72rem;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    letter-spacing: 0.02em;
}

.count-pill.baseline {
    background: var(--gray-100);
    color: var(--gray-600);
}

.count-pill.annotategpt {
    background: rgba(79,70,229,0.1);
    color: var(--primary-dark);
}

.count-pill.inferred {
    background: rgba(251,191,36,0.15);
    color: #92400e;
}

.count-pill.generated {
    background: rgba(16,185,129,0.12);
    color: #065f46;
}

.purpose-category .taxonomy-counts {
    margin-top: 10px;
}

/* Purpose Grid */
.purpose-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
}

.purpose-category {
    padding: 20px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    background: var(--white);
    transition: var(--transition);
}

.purpose-category:hover {
    border-color: var(--primary-100);
    box-shadow: var(--shadow-sm);
}

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

.purpose-header h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--gray-800);
    margin: 0;
}

.purpose-total {
    font-weight: 600;
    color: var(--gray-400);
    margin-left: auto;
    font-family: var(--font-hand);
    font-size: 0.85rem;
}

.purpose-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.purpose-dot.micro {
    background: var(--ink-red);
}

.purpose-dot.mid {
    background: var(--primary);
}

.purpose-dot.macro {
    background: var(--ink-green);
}

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

.purpose-subs li {
    font-size: 0.85rem;
    color: var(--gray-500);
    line-height: 1.5;
    padding: 4px 0;
    padding-left: 18px;
    position: relative;
}

.purpose-subs li::before {
    content: '\2022';
    position: absolute;
    left: 4px;
    color: var(--gray-300);
}

/* Purpose Spectrum */
.purpose-spectrum {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px dashed var(--gray-200);
}

.spectrum-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--gray-400);
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.spectrum-bar {
    flex: 1;
    height: 6px;
    background: var(--gray-100);
    border-radius: var(--radius-full);
    position: relative;
    overflow: hidden;
}

.spectrum-fill {
    position: absolute;
    inset: 0;
    border-radius: var(--radius-full);
    background: linear-gradient(90deg, var(--ink-red), var(--primary), var(--ink-green));
    opacity: 0.6;
}

/* === Workflows Section === */
.workflows-section {
    margin-bottom: 72px;
    padding: 48px;
    background: var(--white);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
}

.workflow-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.workflow-group-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 6px;
}

.workflow-group-title i {
    color: var(--primary);
    margin-right: 6px;
}

.workflow-group-desc {
    font-size: 0.85rem;
    color: var(--gray-400);
    margin-bottom: 20px;
}

.workflow-item {
    padding: 18px;
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-100);
    margin-bottom: 12px;
    transition: var(--transition);
}

.workflow-item:hover {
    border-color: var(--primary-100);
    background: rgba(79,70,229,0.02);
}

.workflow-flow {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.wf-step {
    font-size: 0.82rem;
    font-weight: 700;
    padding: 4px 14px;
    border-radius: var(--radius-full);
    background: var(--gray-100);
    color: var(--gray-700);
    letter-spacing: 0.02em;
}

.wf-step.accent {
    background: var(--primary-50);
    color: var(--primary-dark);
}

.wf-arrow {
    color: var(--gray-300);
    font-size: 0.9rem;
}

.workflow-meta p {
    font-size: 0.85rem;
    color: var(--gray-500);
    line-height: 1.5;
    margin: 0;
}

.wf-participants {
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-bottom: 4px;
    font-family: var(--font-hand);
    font-size: 0.85rem;
}

.workflow-figure {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-200);
}

/* === Findings === */
.findings {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 64px;
}

.finding-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.finding-card:hover {
    border-color: var(--primary-100);
    box-shadow: var(--shadow-md);
}

.finding-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-50);
    color: var(--primary);
    border-radius: var(--radius-md);
    font-size: 1.2rem;
    margin-bottom: 16px;
}

.finding-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 10px;
}

.finding-card p {
    font-size: 0.93rem;
    color: var(--gray-500);
    line-height: 1.6;
}

/* Participant quotes — styled as handwritten margin comments */
.participant-quote {
    font-family: var(--font-hand);
    font-size: 1.05rem;
    color: var(--ink-blue);
    margin-top: 12px;
    padding: 8px 14px;
    background: rgba(37,99,235,0.04);
    border-left: 3px solid rgba(37,99,235,0.25);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-style: normal;
    line-height: 1.5;
}

.participant-quote cite {
    font-size: 0.85rem;
    color: var(--gray-400);
    font-style: normal;
}

/* Strikethrough annotation effect */
.strikethrough-text {
    position: relative;
    color: var(--gray-600);
    font-family: var(--font-hand);
    font-size: 1.05em;
}

/* === Comparison === */
.comparison {
    background: var(--white);
}

/* === Beyond Education === */
.beyond {
    background: var(--gray-50);
}

.beyond-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.beyond-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 36px 32px;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.beyond-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-100);
}

.beyond-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #fef3c7, #fde68a);
    color: var(--primary);
    border-radius: var(--radius-md);
    font-size: 1.4rem;
    margin-bottom: 20px;
}

.beyond-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}

.beyond-card p {
    font-size: 0.95rem;
    color: var(--gray-500);
    line-height: 1.6;
}

/* === Discussion / Implications === */
.discussion {
    background: var(--white);
}

.implications-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.implication-card {
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    padding: 36px 32px;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.implication-card:hover {
    border-color: var(--primary-100);
    box-shadow: var(--shadow-md);
}

.implication-number {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--primary-100);
    font-family: var(--font-mono);
    margin-bottom: 16px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.implication-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 10px;
}

.implication-card p {
    font-size: 0.93rem;
    color: var(--gray-500);
    line-height: 1.6;
}

/* === Team === */
.team {
    background: var(--gray-50);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.team-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px 28px;
    text-align: center;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.team-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-100);
}

.team-avatar {
    width: 100px;
    height: 100px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    border-radius: var(--radius-full);
    font-size: 2rem;
    overflow: hidden;
}

.team-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-full);
}

.team-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
    font-family: var(--font-hand);
}

.team-role {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--primary);
    margin-bottom: 4px;
}

.team-affiliation {
    font-size: 0.85rem;
    color: var(--gray-400);
    margin-bottom: 16px;
}

.team-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.team-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--gray-100);
    color: var(--gray-500);
    font-size: 1.05rem;
    transition: var(--transition);
}

.team-link:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
}

.team-link[title="ORCID"]:hover {
    background: #a6ce39;
}

.team-link[title="LinkedIn"]:hover {
    background: #0a66c2;
}

.team-link[title="Google Scholar"]:hover {
    background: #4285f4;
}

.team-link[title="GitHub"]:hover {
    background: #333;
}

.team-link[title="Website"]:hover {
    background: var(--primary-dark);
}

/* === Citation === */
.citation {
    background: linear-gradient(135deg, #1a1612, #3d3022);
    color: var(--white);
}

.citation .section-label {
    background: rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.8);
}

.citation .section-title {
    color: var(--white);
}

.citation-block {
    position: relative;
    max-width: 720px;
    margin: 0 auto 48px;
    background: rgba(0,0,0,0.3);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-lg);
    padding: 28px 32px;
    padding-right: 140px;
}

.citation-text {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: rgba(255,255,255,0.8);
    line-height: 1.7;
    white-space: pre-wrap;
    word-break: break-word;
}

.btn-copy {
    position: absolute;
    top: 28px;
    right: 28px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    color: rgba(255,255,255,0.8);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-copy:hover {
    background: rgba(255,255,255,0.2);
    color: var(--white);
}

.btn-copy.copied {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--white);
}

/* Citation format controls */
.citation-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}
.citation-controls .citation-label {
    color: rgba(255,255,255,0.75);
    font-size: 0.85rem;
    margin-right: 6px;
}
.citation-options {
    display: inline-flex;
    gap: 0.5rem;
    background: rgba(255,255,255,0.03);
    padding: 4px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.04);
}
.citation-option {
    background: transparent;
    border: none;
    color: rgba(255,255,255,0.85);
    padding: 6px 10px;
    border-radius: 6px;
    cursor: pointer;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    transition: background 180ms, color 180ms, transform 120ms;
}
.citation-option:hover {
    background: rgba(255,255,255,0.06);
    transform: translateY(-1px);
}
.citation-option.active {
    background: rgba(255,255,255,0.12);
    color: var(--white);
    box-shadow: 0 4px 12px rgba(0,0,0,0.35);
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
}

.citation .btn-outline {
    color: rgba(255,255,255,0.8);
    border-color: rgba(255,255,255,0.3);
}

.citation .btn-outline:hover {
    border-color: rgba(255,255,255,0.6);
    color: var(--white);
    background: rgba(255,255,255,0.08);
}

/* === Footer === */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 48px 0;
}

.footer-content {
    text-align: center;
}

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 12px;
}

.footer .logo-text {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--white);
}

.footer-logo .logo-annotate,
.footer-logo .logo-gpt {
    color: var(--white);
}

.footer-conference {
    font-size: 0.9rem;
    margin-bottom: 16px;
    color: var(--gray-500);
}

.footer-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 16px;
    font-size: 0.85rem;
    flex-wrap: wrap;
}

.footer-links a:hover {
    color: var(--primary-light);
}

.footer-divider {
    color: var(--gray-600);
}

.footer-license {
    font-size: 0.8rem;
    color: var(--gray-500);
    margin-bottom: 6px;
}

.footer-license a {
    color: var(--gray-400);
    text-decoration: underline;
    text-decoration-color: var(--gray-600);
}

.footer-license a:hover {
    color: var(--primary-light);
}

.footer-copy {
    font-size: 0.75rem;
    color: var(--gray-600);
}

/* === Reveal / Animations === */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }
.delay-3 { animation-delay: 0.45s; }

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* === Hero scribble decoration === */
.hero-scribble {
    margin: 0 auto;
    display: block;
}

/* Highlighter mark effect in hero */
.highlighter-mark {
    background: linear-gradient(
        104deg,
        rgba(251,191,36,0) 0.9%,
        rgba(251,191,36,0.3) 2.4%,
        rgba(251,191,36,0.2) 5.8%,
        rgba(251,191,36,0.18) 93%,
        rgba(251,191,36,0.25) 96%,
        rgba(251,191,36,0) 98%
    );
    padding: 2px 6px;
    border-radius: 4px;
    -webkit-box-decoration-break: clone;
    box-decoration-break: clone;
}

/* Annotation-style figure frames — looks like taped-on paper */
.teaser-wrapper,
.demo-video-wrapper,
.system-figure,
.results-figure,
.beyond-figure,
.comparison-visual,
.workflow-figure,
.interface-img-wrapper {
    position: relative;
}

.results-figure {
    padding: 24px;
}

.teaser-wrapper::before,
.demo-video-wrapper::before,
.system-figure::before,
.results-figure::before,
.beyond-figure::before,
.comparison-visual::before,
.workflow-figure::before,
.interface-img-wrapper::before {
    content: '';
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%) rotate(1.5deg);
    width: 90px;
    height: 26px;
    background:
        /* Frosted semi-transparent tape body */
        linear-gradient(
            180deg,
            rgba(255,255,240,0.55) 0%,
            rgba(250,245,215,0.45) 40%,
            rgba(245,240,200,0.5) 100%
        );
    /* Tape edges: soft top/bottom with slightly rough left/right */
    border-top: 1px solid rgba(255,255,255,0.6);
    border-bottom: 1px solid rgba(210,195,140,0.3);
    border-left: 1px solid rgba(230,220,170,0.25);
    border-right: 1px solid rgba(230,220,170,0.25);
    border-radius: 1px;
    box-shadow:
        0 1px 3px rgba(180,160,100,0.15),
        inset 0 0 8px rgba(255,255,230,0.3);
    backdrop-filter: blur(1px);
    -webkit-backdrop-filter: blur(1px);
    z-index: 2;
    pointer-events: none;
}

/* Slight shine / crease across the tape */
.teaser-wrapper::after,
.demo-video-wrapper::after,
.system-figure::after,
.results-figure::after,
.beyond-figure::after,
.comparison-visual::after,
.workflow-figure::after,
.interface-img-wrapper::after {
    content: '';
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%) rotate(1.5deg);
    width: 86px;
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255,255,255,0.7) 20%,
        rgba(255,255,255,0.5) 50%,
        rgba(255,255,255,0.7) 80%,
        transparent 100%
    );
    z-index: 3;
    pointer-events: none;
}

/* Subtle ruled lines on finding cards */
.finding-card {
    background-image:
        repeating-linear-gradient(
            transparent,
            transparent 27px,
            rgba(59,130,246,0.04) 27px,
            rgba(59,130,246,0.04) 28px
        );
    background-size: 100% 28px;
}

/* === Responsive === */
@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }

    .challenge-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto 48px;
    }

    .interface-item,
    .interface-item.reverse {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .interface-item.reverse .interface-img-wrapper,
    .interface-item.reverse .interface-info {
        order: unset;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1024px) {
    :root {
        --section-padding: 64px;
    }

    .nav-links,
    .nav-actions {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .margin-note { display: none; }

    .abstract .container,
    .contributions .container {
        padding-left: 24px;
        border-left: none;
    }

    /* Mobile menu */
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        padding: 16px 24px;
        box-shadow: var(--shadow-lg);
        border-bottom: 1px solid var(--gray-200);
    }

    .nav-links.active a {
        color: var(--gray-700) !important;
        padding: 12px 16px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .hero-actions .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }

    .contribution-card {
        flex-direction: column;
        text-align: center;
        padding: 28px 24px;
    }

    .contribution-icon {
        order: -1;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .stat-card-wide {
        grid-column: span 2;
    }

    .stat-triple {
        gap: 20px;
    }

    .stat-value {
        font-size: 2.2rem;
    }

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

    .dimension-cards {
        grid-template-columns: 1fr;
    }

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

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

    .annotation-taxonomy,
    .workflows-section {
        padding: 24px;
    }

    .purpose-spectrum {
        flex-direction: column;
        align-items: stretch;
    }

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

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

    .team-grid {
        grid-template-columns: 1fr;
        max-width: 360px;
        margin: 0 auto;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .citation-block {
        padding-right: 32px;
    }

    .btn-copy {
        position: relative;
        top: auto;
        right: auto;
        margin-top: 16px;
    }

    .cta-actions {
        flex-direction: column;
        align-items: center;
    }

    .cta-actions .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 3rem;
    }

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

    .stat-card {
        padding: 24px 16px;
    }

    .footer-links {
        flex-direction: column;
        gap: 6px;
    }

    .footer-divider {
        display: none;
    }
}