:root {
  --ink: #213332;
  --ink-soft: #526462;
  --blue: #477a92;
  --blue-soft: #dcebf0;
  --green: #3f755c;
  --green-soft: #e1eee8;
  --violet: #75658f;
  --paper: #ffffff;
  --wash: #f5f9f8;
  --line: rgba(54, 92, 84, 0.14);
  --shadow: 0 18px 48px rgba(42, 70, 67, 0.10);
  --font-serif: "Noto Serif SC", "Noto Serif", Georgia, serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 500;
  line-height: 1.78;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

main {
  overflow: clip;
}

.page-shell {
  width: min(1240px, calc(100% - 64px));
  margin: 0 auto;
}

.text-shell {
  width: min(1080px, calc(100% - 64px));
}

.hero {
  position: relative;
  isolation: isolate;
  min-height: 760px;
  padding: 34px 32px 152px;
  overflow: hidden;
  background: #f4f8f7;
}

.hero::before {
  content: "";
  position: absolute;
  z-index: -2;
  inset: auto -8% -18% 28%;
  height: 58%;
  background: rgba(208, 229, 234, 0.62);
  clip-path: polygon(5% 28%, 100% 0, 100% 100%, 0 100%);
}

.hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  right: -5%;
  bottom: -10%;
  width: 62%;
  height: 42%;
  background: rgba(215, 233, 224, 0.66);
  clip-path: polygon(16% 24%, 100% 0, 100% 100%, 0 100%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: min(1260px, 100%);
  margin: 0 auto;
  text-align: center;
}

.home-link {
  position: absolute;
  top: 0;
  left: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  color: #45615d;
  font-size: 0.88rem;
  font-weight: 700;
  transition: color 180ms ease, transform 180ms ease;
}

.home-link svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.home-link:hover {
  color: var(--blue);
  transform: translateX(-3px);
}

.status-line {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 34px;
  margin-top: 60px;
  color: #526d69;
  font-size: 0.86rem;
  font-weight: 750;
}

.status-mark {
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--violet);
  transform: rotate(45deg);
}

.status-separator {
  width: 22px;
  height: 1px;
  background: rgba(63, 117, 92, 0.38);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 1210px;
  margin: 24px auto 30px;
  color: #1f3434;
  font-size: 3.35rem;
  font-weight: 750;
  letter-spacing: 0;
  line-height: 1.24;
}

h1 span {
  display: block;
}

.authors {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  margin: 0 auto 18px;
  color: #384e4b;
  font-size: 1.16rem;
  font-weight: 570;
  line-height: 1.9;
}

.authors a {
  color: #356b80;
  font-weight: 750;
  text-decoration: underline;
  text-decoration-color: rgba(53, 107, 128, 0.32);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.authors sup,
.institutions sup,
.author-note sup {
  position: relative;
  top: -0.2em;
  margin-left: 2px;
  color: var(--green);
  font-size: 0.66em;
  font-weight: 750;
}

.institutions {
  max-width: 1130px;
  margin: 0 auto;
  color: #60706e;
  font-size: 0.9rem;
  line-height: 1.7;
}

.institutions p {
  margin-bottom: 3px;
}

.author-note {
  margin: 8px 0 28px;
  color: #6d7b79;
  font-size: 0.82rem;
}

.link-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.project-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  width: 132px;
  min-height: 46px;
  padding: 0 16px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.78);
  color: #385b57;
  box-shadow: 0 7px 22px rgba(53, 83, 78, 0.08);
  font-size: 0.9rem;
  font-weight: 750;
  transition: color 180ms ease, background 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.project-link svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.project-link:hover {
  color: #315f73;
  background: #ffffff;
  box-shadow: 0 10px 28px rgba(53, 83, 78, 0.13);
  transform: translateY(-2px);
}

.bridge-field {
  position: absolute;
  z-index: -1;
  inset: 0;
  pointer-events: none;
}

.bridge-path {
  position: absolute;
  display: block;
  border: 1px solid rgba(68, 116, 133, 0.13);
  border-left-color: transparent;
  border-bottom-color: transparent;
  border-radius: 50%;
  transform: rotate(-7deg);
}

.bridge-path--one {
  top: 9%;
  left: -15%;
  width: 72%;
  height: 34%;
}

.bridge-path--two {
  top: 26%;
  right: -19%;
  width: 78%;
  height: 46%;
  border-color: rgba(63, 117, 92, 0.12);
  border-right-color: transparent;
  transform: rotate(11deg);
}

.bridge-path--three {
  bottom: 4%;
  left: 12%;
  width: 64%;
  height: 28%;
  border-color: rgba(117, 101, 143, 0.10);
  border-top-color: transparent;
  transform: rotate(4deg);
}

.bridge-node {
  position: absolute;
  display: block;
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: rgba(71, 122, 146, 0.34);
  transform: rotate(45deg);
}

.bridge-node--one {
  top: 18%;
  left: 11%;
}

.bridge-node--two {
  top: 32%;
  right: 12%;
  background: rgba(63, 117, 92, 0.32);
}

.bridge-node--three {
  bottom: 22%;
  left: 24%;
  background: rgba(117, 101, 143, 0.27);
}

.bridge-node--four {
  right: 27%;
  bottom: 13%;
  width: 6px;
  height: 6px;
  background: rgba(71, 122, 146, 0.24);
}

.opening-figure {
  position: relative;
  z-index: 4;
  margin-top: -98px;
  padding: 0 0 72px;
  background: #ffffff;
}

.paper-figure {
  position: relative;
  margin: 0;
  text-align: center;
}

.framework-figure {
  padding: 24px 24px 0;
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.framework-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 3px;
  transform-origin: center;
  transition: transform 300ms ease, filter 300ms ease;
}

.framework-figure::after {
  content: "";
  position: absolute;
  top: 24px;
  bottom: 72px;
  left: -18%;
  width: 13%;
  background: rgba(255, 255, 255, 0.62);
  filter: blur(8px);
  opacity: 0;
  pointer-events: none;
  transform: skewX(-12deg);
}

.framework-figure:hover img {
  transform: scale(1.025);
  filter: saturate(1.04) contrast(1.015);
}

.framework-figure:hover::after {
  opacity: 1;
  animation: figure-shine 900ms ease-out both;
}

@keyframes figure-shine {
  from { left: -18%; }
  to { left: 105%; }
}

figcaption {
  max-width: 1040px;
  margin: 20px auto 0;
  padding: 0 8px 23px;
  color: #61706f;
  font-size: 0.9rem;
  line-height: 1.65;
  text-align: left;
}

figcaption strong {
  color: #334d49;
}

.content-section {
  position: relative;
  padding: 86px 0;
  background: #ffffff;
}

.content-section--method {
  padding-top: 106px;
  background: #f6f9f8;
}

.content-section--method::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 86px;
  background: linear-gradient(to bottom, #ffffff, #f6f9f8);
}

.content-section--bibtex {
  padding-top: 104px;
  padding-bottom: 110px;
  background: #eef5f3;
}

.content-section--bibtex::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 88px;
  background: linear-gradient(to bottom, #f6f9f8, #eef5f3);
}

.section-heading {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 18px;
  margin-bottom: 28px;
}

.section-heading > span {
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 800;
}

.section-heading h2 {
  margin: 0;
  color: #203b38;
  font-size: 2.15rem;
  font-weight: 750;
  letter-spacing: 0;
  line-height: 1.28;
}

.lead-copy,
.section-copy {
  margin-bottom: 0;
  color: #445653;
  font-size: 1.08rem;
  line-height: 1.9;
  text-align: justify;
}

.lead-copy strong,
.section-copy strong {
  color: #315f58;
}

.method-steps {
  margin: 46px 0 44px;
  padding: 0;
  list-style: none;
}

.method-steps li {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.method-steps li:last-child {
  border-bottom: 1px solid var(--line);
}

.step-index {
  color: var(--violet);
  font-size: 0.78rem;
  font-weight: 800;
}

.method-steps h3 {
  margin-bottom: 6px;
  color: #2d4a46;
  font-size: 1.16rem;
  font-weight: 750;
  letter-spacing: 0;
}

.method-steps p {
  margin-bottom: 0;
  color: #60706d;
  font-size: 0.96rem;
  line-height: 1.7;
}

.contributions {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.contributions li {
  position: relative;
  padding-left: 29px;
  color: #435653;
  font-size: 1rem;
  line-height: 1.75;
}

.contributions li::before {
  content: "";
  position: absolute;
  top: 0.78em;
  left: 2px;
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: var(--green);
  transform: rotate(45deg) translateY(-50%);
}

.bibtex-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 20px;
}

.bibtex-heading .section-heading {
  margin-bottom: 0;
}

.copy-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 104px;
  min-height: 42px;
  padding: 0 15px;
  border: 0;
  border-radius: 6px;
  background: #ffffff;
  color: #3c655e;
  box-shadow: 0 6px 18px rgba(48, 82, 76, 0.09);
  cursor: pointer;
  font-size: 0.86rem;
  font-weight: 750;
  transition: color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.copy-button:hover {
  color: var(--blue);
  box-shadow: 0 9px 22px rgba(48, 82, 76, 0.13);
  transform: translateY(-1px);
}

.copy-button svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.copy-button .check-icon {
  display: none;
}

.copy-button.is-copied .copy-icon {
  display: none;
}

.copy-button.is-copied .check-icon {
  display: block;
}

pre {
  margin: 0;
  padding: 26px 28px;
  overflow-x: auto;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
  color: #2e4844;
  box-shadow: 0 10px 30px rgba(48, 82, 76, 0.07);
  font-family: Consolas, "SFMono-Regular", monospace;
  font-size: 0.91rem;
  line-height: 1.7;
  white-space: pre;
}

.copy-status {
  min-height: 24px;
  margin: 10px 0 0;
  color: #55716d;
  font-size: 0.82rem;
  text-align: right;
}

:focus-visible {
  outline: 2px solid rgba(71, 122, 146, 0.62);
  outline-offset: 4px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 980px) {
  .hero {
    min-height: 720px;
    padding-right: 24px;
    padding-left: 24px;
  }

  h1 {
    font-size: 2.75rem;
  }

  .authors {
    font-size: 1.06rem;
  }

  .author-line {
    display: contents;
  }

  .framework-figure {
    padding: 18px 18px 0;
  }

  .content-section {
    padding-top: 72px;
    padding-bottom: 72px;
  }
}

@media (max-width: 700px) {
  body {
    font-size: 16px;
  }

  .page-shell,
  .text-shell {
    width: min(100% - 32px, 1080px);
  }

  .hero {
    min-height: 0;
    padding: 22px 16px 120px;
  }

  .home-link {
    position: static;
    justify-content: flex-start;
    width: 100%;
  }

  .status-line {
    margin-top: 34px;
    font-size: 0.78rem;
  }

  h1 {
    margin-top: 18px;
    margin-bottom: 24px;
    font-size: 2.02rem;
    line-height: 1.3;
  }

  h1 span {
    display: inline;
  }

  .authors {
    display: block;
    font-size: 0.98rem;
    line-height: 1.85;
  }

  .institutions {
    font-size: 0.78rem;
  }

  .project-link {
    width: 112px;
    min-height: 44px;
    padding: 0 12px;
    font-size: 0.82rem;
  }

  .opening-figure {
    margin-top: -72px;
    padding-bottom: 48px;
  }

  .framework-figure {
    padding: 10px 10px 0;
    border-radius: 6px;
    box-shadow: 0 12px 32px rgba(42, 70, 67, 0.09);
  }

  figcaption {
    margin-top: 14px;
    padding-right: 3px;
    padding-bottom: 13px;
    padding-left: 3px;
    font-size: 0.78rem;
    line-height: 1.58;
  }

  .content-section {
    padding: 58px 0;
  }

  .content-section--method,
  .content-section--bibtex {
    padding-top: 76px;
  }

  .section-heading {
    gap: 12px;
    margin-bottom: 22px;
  }

  .section-heading h2 {
    font-size: 1.7rem;
  }

  .lead-copy,
  .section-copy {
    font-size: 0.98rem;
    line-height: 1.82;
    text-align: left;
  }

  .method-steps {
    margin-top: 34px;
    margin-bottom: 34px;
  }

  .method-steps li {
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 12px;
    padding: 20px 0;
  }

  .method-steps h3 {
    font-size: 1.04rem;
  }

  .method-steps p,
  .contributions li {
    font-size: 0.9rem;
  }

  .bibtex-heading {
    align-items: flex-end;
  }

  .copy-button {
    min-width: 44px;
    padding: 0 12px;
  }

  .copy-button span {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
  }

  pre {
    padding: 20px;
    font-size: 0.78rem;
    line-height: 1.62;
  }
}

@media (max-width: 430px) {
  h1 {
    font-size: 1.72rem;
  }

  .link-row {
    gap: 8px;
  }

  .project-link {
    width: 98px;
  }
}