:root {
 --ink: #202124;
 --muted: #5f6368;
 --line: #dfe3e8;
 --paper: #ffffff;
 --soft: #f6f8fb;
 --purple: #7C3AED;
 --purple-soft: #F3EFFF;
 --green: #2e7d52;
 --shadow: 0 12px 32px rgba(32, 33, 36, 0.08);
}

* {
 box-sizing: border-box;
}

html {
 scroll-behavior: smooth;
}

body {
 margin: 0;
 background: var(--paper);
 color: var(--ink);
 font-family:
 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
 line-height: 1.6;
}

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

a:hover {
 text-decoration: underline;
}

img {
 display: block;
 width: 100%;
}

.paper-width {
 width: min(1120px, calc(100% - 36px));
 margin: 0 auto;
}

.topbar {
 position: sticky;
 top: 0;
 z-index: 20;
 display: flex;
 align-items: center;
 justify-content: space-between;
 gap: 24px;
 padding: 12px max(18px, calc((100vw - 1120px) / 2));
 background: rgba(255, 255, 255, 0.94);
 border-bottom: 1px solid var(--line);
 backdrop-filter: blur(10px);
}

.brand {
 display: flex;
 align-items: center;
 color: var(--ink);
 font-weight: 800;
}

.brand-icon {
 width: 22px;
 height: 22px;
 margin-right: 6px;
 object-fit: contain;
}

.topbar nav {
 display: flex;
 align-items: center;
 gap: 18px;
 font-size: 14px;
}

.hero {
 padding: 72px 0 28px;
 text-align: center;
}

h1,
h2,
h3 {
 line-height: 1.18;
 letter-spacing: 0;
}

h1 {
 max-width: 980px;
 margin: 0 auto;
 font-size: clamp(22px, 3.2vw, 36px);
 font-weight: 800;
}

.subtitle {
 max-width: 830px;
 margin: 20px auto 0;
 color: var(--muted);
 font-size: 20px;
}

.authors {
 display: flex;
 flex-wrap: wrap;
 justify-content: center;
 align-items: baseline;
 gap: 4px 12px;
 margin: 28px auto 0;
 max-width: 980px;
 font-size: 16px;
 line-height: 1.35;
}

.authors span {
 display: inline-block;
 min-height: 1.35em;
}

.authors sup {
 line-height: 0;
}

.affiliations {
 max-width: 960px;
 margin: 18px auto 0;
 color: var(--muted);
 font-size: 14px;
}

.affiliations p {
 margin: 4px 0;
}

.actions {
 display: flex;
 flex-wrap: wrap;
 justify-content: center;
 gap: 12px;
 margin-top: 28px;
}

.button {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 min-height: 42px;
 padding: 0 18px;
 border: 1px solid var(--line);
 border-radius: 8px;
 color: var(--ink);
 font-weight: 700;
 background: var(--paper);
 transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.button:hover {
 transform: translateY(-1px);
 box-shadow: 0 4px 12px rgba(32, 33, 36, 0.1);
 text-decoration: none;
}

.button.primary {
 background: var(--purple);
 border-color: var(--purple);
 color: #ffffff;
}

.teaser {
 margin-top: 10px;
}

.teaser.paper-width {
 width: min(820px, calc(100% - 36px));
}

.teaser img,
.paper-figure img {
 border: 1px solid var(--line);
 border-radius: 10px;
 background: var(--soft);
 box-shadow: var(--shadow);
 transition: transform 0.3s ease;
}

.teaser img:hover {
 transform: scale(1.02);
}

.paper-figure {
 margin: 28px 0 0;
}

.section {
 padding: 54px 0;
 border-top: 1px solid var(--line);
}

.section h2 {
 margin: 0 0 16px;
 font-size: 30px;
 padding-left: 14px;
 border-left: 4px solid var(--purple);
}

.section > p {
 max-width: 1040px;
 margin: 0 0 14px;
 color: #34383d;
}

.note {
 color: var(--muted) !important;
 font-size: 14px;
}

.footer {
 padding: 32px 0 54px;
 color: var(--muted);
 border-top: 1px solid var(--line);
 font-size: 14px;
}

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

 .topbar nav {
 flex-wrap: wrap;
 gap: 10px 14px;
 }

 .hero {
 padding-top: 44px;
 }
}

@media (max-width: 560px) {
 .paper-width {
 width: min(100% - 24px, 1120px);
 }

 h1 {
 font-size: 32px;
 }

 .subtitle {
 font-size: 17px;
 }
}