:root {
  --navy-950: #07111f;
  --navy-900: #0b1626;
  --navy-800: #10243a;
  --cyan: #22d3ee;
  --orange: #ff9f43;
  --ink: #172537;
  --paper: #f7fafc;
  --surface: #eaf2f8;
  --muted: #91a4b7;
  --line: rgba(18, 43, 67, 0.13);
  --line-dark: rgba(234, 242, 248, 0.16);
  --shadow: 0 18px 50px rgba(7, 17, 31, 0.11);
  --radius: 18px;
  --shell: 1180px;
}

* { 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", sans-serif; line-height: 1.6; overflow-x: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--cyan); outline-offset: 4px; }

.section-shell, .nav-shell { width: min(var(--shell), calc(100% - 48px)); margin: 0 auto; }
.section { position: relative; padding: 112px 0; }
.section-dark { background: var(--navy-950); color: var(--surface); }
.section-light { background: var(--paper); }
.section-muted { background: var(--surface); }
.eyebrow { margin: 0 0 16px; color: var(--cyan); font-size: 0.73rem; font-weight: 800; letter-spacing: 0.16em; text-transform: uppercase; }
.eyebrow-dark { color: #0a879b; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.08; letter-spacing: -0.035em; }
h2 { max-width: 760px; margin-bottom: 22px; font-size: clamp(2rem, 4vw, 3.65rem); }
h3 { margin-bottom: 12px; font-size: 1.35rem; }
.section-heading { max-width: 820px; margin-bottom: 46px; }
.section-heading > p:last-child { max-width: 700px; margin-bottom: 0; color: var(--muted); font-size: 1.05rem; }
.split-heading { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr); gap: 64px; align-items: end; max-width: none; }
.section-dark .section-heading > p:last-child, .section-dark .split-heading > p:last-child { color: #b5c5d1; }

.site-header { position: sticky; top: 0; z-index: 20; background: rgba(7, 17, 31, 0.9); border-bottom: 1px solid rgba(234, 242, 248, 0.1); backdrop-filter: blur(18px); }
.nav-shell { display: flex; min-height: 72px; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--surface); font-size: 1rem; font-weight: 800; text-decoration: none; letter-spacing: 0.02em; }
.brand-mark { display: grid; width: 31px; height: 31px; place-items: center; border: 1px solid rgba(34, 211, 238, 0.75); color: var(--cyan); font-size: 0.67rem; letter-spacing: -0.08em; }
.site-nav { display: flex; align-items: center; gap: clamp(16px, 2.6vw, 34px); }
.site-nav a { color: #b5c5d1; font-size: 0.8rem; font-weight: 700; text-decoration: none; transition: color 180ms ease; }
.site-nav a:hover { color: var(--cyan); }
.menu-toggle { display: none; border: 0; background: transparent; padding: 8px; cursor: pointer; }
.menu-toggle span { display: block; width: 24px; height: 2px; margin: 4px; background: var(--surface); }

.hero { min-height: 760px; display: grid; align-items: center; overflow: hidden; }
.hero::before { position: absolute; inset: 0; content: ""; background: radial-gradient(circle at 75% 20%, rgba(34, 211, 238, 0.13), transparent 32%), radial-gradient(circle at 10% 75%, rgba(255, 159, 67, 0.1), transparent 30%); pointer-events: none; }
.hero::after { position: absolute; inset: 0; content: ""; opacity: 0.16; background-image: linear-gradient(rgba(34,211,238,0.2) 1px, transparent 1px), linear-gradient(90deg, rgba(34,211,238,0.2) 1px, transparent 1px); background-size: 66px 66px; mask-image: linear-gradient(to bottom, black, transparent 85%); pointer-events: none; }
.hero-grid { position: absolute; inset: auto -10% 7% 36%; height: 34%; border: 1px solid rgba(34, 211, 238, 0.25); transform: perspective(700px) rotateX(60deg) rotateZ(-6deg); opacity: 0.4; }
.hero-orbit { position: absolute; width: 420px; height: 180px; border: 1px solid rgba(255, 159, 67, 0.26); border-radius: 50%; transform: rotate(-18deg); }
.hero-orbit-one { right: 2%; top: 27%; }
.hero-orbit-two { right: 7%; top: 32%; width: 340px; transform: rotate(20deg); border-color: rgba(34, 211, 238, 0.3); }
.hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(330px, 0.7fr); gap: 40px; align-items: center; padding-top: 76px; padding-bottom: 72px; }
.hero-copy { max-width: 100%; }
.hero h1 { max-width: 100%; margin-bottom: 28px; color: #f6fbff; font-size: clamp(2.25rem, 2.6vw, 3.05rem); letter-spacing: -0.055em; }
.hero-lede { max-width: 610px; margin-bottom: 28px; color: #bdcedb; font-size: 1.16rem; }
.authors { color: #dce8ef; font-size: 0.94rem; }
.authors p { margin-bottom: 5px; }
.authors .affiliations { margin-top: 14px; color: var(--cyan); font-weight: 700; }
.authors .author-note { color: var(--muted); font-size: 0.82rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.button { display: inline-flex; min-height: 44px; align-items: center; gap: 9px; border: 1px solid transparent; border-radius: 999px; padding: 10px 17px; font: inherit; font-size: 0.82rem; font-weight: 800; text-decoration: none; cursor: pointer; }
.button-primary { border-color: var(--cyan); background: var(--cyan); color: var(--navy-950); }
.button-primary:hover { background: #7be7f6; }
.button-ghost { border-color: rgba(234,242,248,0.3); background: transparent; color: var(--surface); }
.button-ghost:hover { border-color: var(--cyan); background: transparent; color: var(--cyan); }
.button-disabled { border-color: rgba(234,242,248,0.12); background: rgba(234,242,248,0.05); color: #637687; cursor: not-allowed; }
.button-disabled span { font-size: 0.63rem; font-weight: 500; opacity: 0.8; }
.hero-figure-wrap { position: relative; }
.hero-figure { position: relative; margin: 0; padding: 13px; border: 1px solid rgba(34, 211, 238, 0.32); border-radius: 22px; background: rgba(10, 26, 43, 0.8); box-shadow: 0 25px 70px rgba(0, 0, 0, 0.3); transform: rotate(1.5deg); }
.hero-figure img { width: 100%; aspect-ratio: 1.6; object-fit: contain; border-radius: 12px; background: #fff; }
figcaption { margin-top: 12px; color: var(--muted); font-size: 0.78rem; line-height: 1.45; }
.hero-figure figcaption { padding: 0 4px 2px; color: #9db0bd; }
.hero-chip { position: absolute; border: 1px solid rgba(255,159,67,0.75); border-radius: 999px; background: rgba(7,17,31,0.9); padding: 7px 11px; color: var(--orange); font-size: 0.68rem; font-weight: 800; letter-spacing: 0.05em; text-transform: uppercase; box-shadow: 0 10px 25px rgba(0,0,0,0.25); }
.chip-one { top: -15px; right: 18px; }
.chip-two { bottom: -15px; left: 18px; border-color: rgba(34,211,238,0.7); color: var(--cyan); }
.scroll-cue { position: absolute; z-index: 2; right: 0; bottom: 25px; left: 0; display: flex; justify-content: center; align-items: center; gap: 9px; color: #6f8595; font-size: 0.68rem; letter-spacing: 0.13em; text-transform: uppercase; }
.scroll-cue span { display: block; width: 6px; height: 6px; border-radius: 50%; background: var(--orange); }

.intro-section { padding-top: 105px; padding-bottom: 76px; }
.intro-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, 0.86fr); gap: 80px; align-items: start; }
.intro-grid h2 { max-width: 650px; }
.intro-text { max-width: 540px; color: #53687a; font-size: 1.02rem; }
.intro-text em { color: #0a879b; font-style: normal; font-weight: 800; }
.stats-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin-top: 78px; }
.stat-card { min-height: 126px; display: flex; flex-direction: column; justify-content: space-between; border-top: 2px solid var(--cyan); padding: 18px 16px; background: #fff; box-shadow: var(--shadow); }
.stat-card:nth-child(2n) { border-color: var(--orange); }
.stat-card strong { color: var(--navy-900); font-size: clamp(1.45rem, 2.3vw, 2.1rem); letter-spacing: -0.06em; }
.stat-card span { color: #6f8291; font-size: 0.73rem; font-weight: 700; text-transform: uppercase; }

.challenge-section { overflow: hidden; }
.challenge-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.challenge-card { min-height: 285px; position: relative; display: flex; flex-direction: column; align-items: flex-start; border: 1px solid var(--line-dark); border-radius: var(--radius); padding: 29px; background: linear-gradient(145deg, rgba(16,36,58,0.94), rgba(10,23,39,0.94)); }
.challenge-card:nth-child(2) { transform: translateY(28px); }
.challenge-card:hover { border-color: rgba(34,211,238,0.52); }
.card-index { margin-bottom: 34px; color: var(--orange); font-size: 0.75rem; font-weight: 800; letter-spacing: 0.12em; }
.challenge-card h3 { color: #f0f7fb; }
.challenge-card p { margin-bottom: 24px; color: #a7bac8; font-size: 0.93rem; }
.evidence-tag { margin-top: auto; color: var(--cyan); font-size: 0.72rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; }

.wide-figure { margin: 0; }
.wide-figure img { width: 100%; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
.dataset-grid { display: grid; grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr); gap: 64px; align-items: center; margin-top: 64px; }
.split-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 24px; }
.split-stats > div { display: flex; flex-direction: column; border-left: 2px solid var(--cyan); padding-left: 13px; }
.split-stats > div:nth-child(2) { border-color: var(--orange); }
.split-stats > div:nth-child(3) { border-color: #667cf5; }
.split-stats strong { font-size: 1.8rem; letter-spacing: -0.06em; }
.split-stats span { color: #718493; font-size: 0.72rem; font-weight: 800; text-transform: uppercase; }
.dataset-copy > p { color: #53687a; }
.mini-note { display: flex; align-items: center; gap: 9px; margin-top: 13px; color: #53687a; font-size: 0.82rem; font-weight: 700; }
.dot { width: 8px; height: 8px; border-radius: 50%; }
.dot-cyan { background: var(--cyan); }
.dot-orange { background: var(--orange); }
.pipeline-figure { margin: 0; }
.pipeline-figure img { padding: 12px; }

.taxonomy-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.taxonomy-panel { border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); box-shadow: 0 10px 30px rgba(7,17,31,0.04); }
.taxonomy-panel summary { display: grid; grid-template-columns: auto 1fr auto; gap: 16px; align-items: center; padding: 24px; cursor: pointer; list-style: none; }
.taxonomy-panel summary::-webkit-details-marker { display: none; }
.taxonomy-level { display: grid; width: 46px; height: 46px; place-items: center; border-radius: 50%; background: rgba(34,211,238,0.15); color: #087f92; font-size: 0.78rem; font-weight: 900; }
.taxonomy-level-orange { background: rgba(255,159,67,0.15); color: #ae5e14; }
.taxonomy-panel summary strong, .taxonomy-panel summary small { display: block; }
.taxonomy-panel summary strong { font-size: 1.2rem; }
.taxonomy-panel summary small { margin-top: 3px; color: #718493; font-size: 0.8rem; }
.summary-mark { color: #718493; font-size: 1.4rem; transition: transform 180ms ease; }
.taxonomy-panel[open] .summary-mark { transform: rotate(45deg); }
.taxonomy-items { display: flex; flex-wrap: wrap; gap: 8px; border-top: 1px solid var(--line); padding: 20px 24px 24px; }
.taxonomy-items span { border: 1px solid var(--line); border-radius: 999px; padding: 8px 11px; color: #53687a; font-size: 0.78rem; }

.benchmark-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.benchmark-card { min-height: 285px; border: 1px solid var(--line-dark); border-radius: var(--radius); padding: 31px; background: var(--navy-900); }
.benchmark-card-cyan { border-top: 3px solid var(--cyan); }
.benchmark-card-orange { border-top: 3px solid var(--orange); }
.benchmark-label { margin-bottom: 33px; color: var(--cyan); font-size: 0.73rem; font-weight: 900; letter-spacing: 0.14em; text-transform: uppercase; }
.benchmark-card-orange .benchmark-label { color: var(--orange); }
.benchmark-card h3 { color: #f2f8fb; font-size: 1.75rem; }
.benchmark-card p { color: #9eb1bf; }
.benchmark-card strong { display: block; margin-top: 34px; color: #eaf2f8; font-size: 1.4rem; }
.protocol-strip { display: flex; flex-wrap: wrap; gap: 15px; align-items: center; margin-top: 30px; color: #91a4b7; font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.08em; }
.protocol-strip span { display: inline-grid; width: 22px; height: 22px; place-items: center; border-radius: 50%; background: rgba(34,211,238,0.15); color: var(--cyan); font-size: 0.65rem; }

.method-flow { display: flex; align-items: stretch; gap: 10px; margin: 66px 0 70px; }
.method-step { flex: 1; min-height: 210px; display: flex; flex-direction: column; border: 1px solid var(--line); border-top: 3px solid var(--cyan); border-radius: 14px; padding: 20px; background: #fff; box-shadow: 0 12px 32px rgba(7,17,31,0.05); }
.method-step:nth-of-type(5) { border-top-color: var(--orange); }
.method-step span { margin-bottom: 28px; color: #0a879b; font-size: 0.72rem; font-weight: 900; letter-spacing: 0.11em; }
.method-step-final { border-color: rgba(255,159,67,0.5); background: #fffaf4; }
.method-step-final span { color: #ae5e14; }
.method-step strong { margin-bottom: 10px; font-size: 1rem; line-height: 1.2; }
.method-step small { margin-top: auto; color: #718493; font-size: 0.76rem; line-height: 1.5; }
.method-connector { display: grid; place-items: center; width: 17px; color: var(--orange); font-size: 1.25rem; }
.method-figure { max-width: 1040px; margin: 0 auto; }

.results-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; margin-bottom: 48px; }
.result-metric { min-height: 190px; border: 1px solid var(--line-dark); border-radius: var(--radius); padding: 24px; background: rgba(16,36,58,0.8); }
.result-metric strong { display: block; margin-bottom: 17px; color: var(--cyan); font-size: clamp(2.4rem, 4vw, 4rem); letter-spacing: -0.08em; }
.result-metric-accent strong { color: var(--orange); }
.result-metric span, .result-metric small { display: block; }
.result-metric span { color: #eaf2f8; font-weight: 700; }
.result-metric small { margin-top: 7px; color: #91a4b7; font-size: 0.78rem; }
.comparison-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; }
.comparison-card, .gap-card { border: 1px solid var(--line-dark); border-radius: var(--radius); padding: 27px; background: rgba(11,22,38,0.72); }
.comparison-title { display: flex; justify-content: space-between; gap: 15px; margin-bottom: 27px; color: #91a4b7; font-size: 0.72rem; font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; }
.comparison-row { display: grid; grid-template-columns: 145px 1fr auto; gap: 14px; align-items: center; margin: 21px 0; color: #c5d3dc; font-size: 0.83rem; }
.comparison-row i { position: relative; display: block; height: 8px; border-radius: 99px; background: #1b354d; overflow: hidden; }
.comparison-row i::after { position: absolute; inset: 0 auto 0 0; width: var(--bar); content: ""; border-radius: inherit; background: var(--cyan); }
.comparison-row b { color: #91a4b7; font-size: 0.7rem; font-weight: 700; }
.comparison-row.is-highlight i::after { background: var(--orange); }
.comparison-row.is-highlight span, .comparison-row.is-highlight b { color: var(--orange); }
.gap-values { display: grid; grid-template-columns: 1fr auto 1fr; gap: 16px; align-items: center; text-align: center; }
.gap-values strong, .gap-values span { display: block; }
.gap-values strong { color: var(--cyan); font-size: clamp(2rem, 4vw, 3.25rem); letter-spacing: -0.08em; }
.gap-values > div:last-child strong { color: var(--orange); }
.gap-values span { color: #9eb1bf; font-size: 0.72rem; font-weight: 800; text-transform: uppercase; }
.gap-arrow { color: #91a4b7; font-size: 0.71rem; font-weight: 800; white-space: nowrap; }
.gap-card p { margin: 28px 0 0; color: #a8bac7; font-size: 0.85rem; }

.examples-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.example-card { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: 0 12px 35px rgba(7,17,31,0.07); }
.example-card img { width: 100%; aspect-ratio: 1.6; object-fit: contain; background: #fff; border-bottom: 1px solid var(--line); }
.example-body { padding: 22px; }
.example-body > span { color: #0a879b; font-size: 0.69rem; font-weight: 900; letter-spacing: 0.11em; text-transform: uppercase; }
.example-body h3 { margin: 9px 0 9px; font-size: 1.15rem; letter-spacing: -0.02em; }
.example-body p { min-height: 48px; margin-bottom: 16px; color: #53687a; font-size: 0.86rem; }
.example-body small { color: #8a9aa6; font-size: 0.75rem; }

.bibtex-grid { display: grid; grid-template-columns: minmax(250px, 0.66fr) minmax(0, 1.34fr); gap: 80px; align-items: center; }
.bibtex-grid p { color: #53687a; }
.bibtex-grid a { color: #087f92; font-weight: 800; }
.bibtex-box { overflow: hidden; border: 1px solid #17304a; border-radius: var(--radius); background: var(--navy-950); box-shadow: var(--shadow); }
.bibtex-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 15px; border-bottom: 1px solid var(--line-dark); padding: 13px 17px; color: #91a4b7; font-size: 0.72rem; font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; }
.copy-button { border: 1px solid rgba(34,211,238,0.45); border-radius: 999px; background: transparent; padding: 7px 11px; color: var(--cyan); font: inherit; font-size: 0.7rem; font-weight: 800; cursor: pointer; }
.copy-button:hover { background: rgba(34,211,238,0.1); }
.copy-button:disabled { opacity: 0.45; cursor: not-allowed; }
.bibtex-box pre { max-height: 250px; overflow: auto; margin: 0; padding: 21px; color: #d4e3eb; font: 0.76rem/1.7 "SFMono-Regular", Consolas, "Liberation Mono", monospace; white-space: pre; }
.copy-status { min-height: 21px; margin: 0; padding: 0 21px 15px; color: var(--orange) !important; font-size: 0.74rem; }

.site-footer { background: #050c16; color: #91a4b7; }
.footer-inner { display: flex; justify-content: space-between; gap: 25px; padding-top: 28px; padding-bottom: 28px; font-size: 0.75rem; }
.footer-inner div { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.footer-inner strong { color: #eaf2f8; }
.footer-inner a { color: var(--cyan); font-weight: 800; text-decoration: none; }

@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-copy { max-width: 850px; }
  .hero-figure-wrap { max-width: 680px; margin: 0 auto; }
  .stats-grid { grid-template-columns: repeat(3, 1fr); }
  .intro-grid, .dataset-grid, .bibtex-grid { gap: 45px; }
  .method-flow { flex-wrap: wrap; }
  .method-step { flex: 1 1 calc(33.33% - 40px); min-height: 180px; }
  .method-connector { display: none; }
}

@media (max-width: 760px) {
  .section-shell, .nav-shell { width: min(var(--shell), calc(100% - 32px)); }
  .section { padding: 78px 0; }
  .site-header { position: relative; }
  .nav-shell { min-height: 64px; }
  .menu-toggle { display: block; }
  .site-nav { position: absolute; top: 64px; right: 16px; left: 16px; display: none; flex-direction: column; align-items: stretch; gap: 0; border: 1px solid var(--line-dark); border-radius: 13px; padding: 8px; background: rgba(11,22,38,0.98); box-shadow: var(--shadow); }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 13px 14px; }
  .hero { min-height: 0; }
  .hero-inner { padding-top: 68px; padding-bottom: 72px; }
  .hero h1 { font-size: clamp(1.05rem, 4.5vw, 2.15rem); white-space: nowrap; }
  .hero-lede { font-size: 1rem; }
  .hero-figure { transform: none; }
  .hero-chip { display: none; }
  .scroll-cue { display: none; }
  .intro-grid, .split-heading, .dataset-grid, .taxonomy-grid, .benchmark-grid, .comparison-grid, .bibtex-grid { grid-template-columns: 1fr; }
  .intro-grid { gap: 25px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); margin-top: 48px; }
  .challenge-grid, .examples-grid { grid-template-columns: repeat(2, 1fr); }
  .challenge-card:nth-child(2) { transform: none; }
  .dataset-grid { gap: 35px; }
  .method-step { flex-basis: calc(50% - 12px); }
  .results-metrics { grid-template-columns: 1fr; }
  .gap-values { gap: 8px; }
  .footer-inner { flex-direction: column; }
}

@media (max-width: 480px) {
  .section { padding: 65px 0; }
  h2 { font-size: 2.15rem; }
  .hero h1 { font-size: 1.05rem; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .button { justify-content: center; }
  .stats-grid, .challenge-grid, .examples-grid { grid-template-columns: 1fr; }
  .stat-card { min-height: 104px; }
  .split-stats { grid-template-columns: 1fr; gap: 15px; }
  .method-step { flex-basis: 100%; min-height: 150px; }
  .comparison-row { grid-template-columns: 1fr; gap: 7px; }
  .comparison-row b { text-align: right; }
  .gap-values { grid-template-columns: 1fr; gap: 15px; }
  .gap-arrow { transform: rotate(90deg); }
  .bibtex-toolbar { align-items: flex-start; flex-direction: column; }
}