:root {
  color-scheme: light;

  --paper: #f6f7f8;
  --surface: #ffffff;
  --surface-2: #eceef0;
  --ink: #0c0d0f;
  --ink-2: #43464c;
  --ink-3: #65686f;
  --rule: #d8dbe0;
  --rule-strong: #a7acb4;
  --control: #7a8089;

  --accent: #0b3ea8;
  --accent-ink: #082a78;
  --accent-soft: #e3e9f7;
  --nav-bg: #f6f7f8;

  --cat-llm: #0c6a61;
  --cat-ml: #7d4f0c;
  --cat-data: #0b3ea8;

  --font-sans: "Archivo", ui-sans-serif, system-ui, sans-serif;
  --font-serif: "IBM Plex Serif", Georgia, serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --t-micro: 0.8125rem;  --t-ui: 0.9375rem;  --t-body: 1.0625rem;  --t-h4: 1.25rem;  --t-h2: 2.125rem;  --t-h1: clamp(2.75rem, 8.2vw, 7.5rem);
  --max: 1280px;
  --rail: 12.5rem;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  color-scheme: dark;

  --paper: #15171b;
  --surface: #16181b;
  --surface-2: #1c1f23;
  --ink: #e9eaec;
  --ink-2: #a4a8ae;
  --ink-3: #868b93;
  --rule: #2a2e33;
  --rule-strong: #474c53;
  --control: #6b7077;

  --accent: #7ba1f0;
  --accent-ink: #a8c2f5;
  --accent-soft: #16203a;
  --nav-bg: #15171b;

  --cat-llm: #4fb3a5;
  --cat-ml: #cf9540;
  --cat-data: #7ba1f0;
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 76px;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: var(--t-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  font-variant-numeric: tabular-nums;
}

a {
  color: inherit;
  text-decoration: none;
}
ul,
ol {
  list-style: none;
}
img,
svg {
  max-width: 100%;
  display: block;
}
button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

p,
dd,
li,
td,
h1,
h2,
h3,
h4 {
  overflow-wrap: anywhere;
}

::selection {
  background: var(--accent);
  color: #fff;
}
[data-theme="dark"] ::selection {
  color: #0c0d0f;
}

.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 2.5rem;
}

.rail-grid {
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr);
  gap: 0 2.5rem;
}
.rail {
  position: sticky;
  top: 5.5rem;
  align-self: start;
  padding-top: 0.55rem;
  border-top: 1px solid var(--ink);
}
.rail-name {
  display: block;
  font-size: var(--t-ui);
  font-weight: 600;
  letter-spacing: -0.005em;
  color: var(--ink);
}
.rail-stat {
  display: block;
  margin-top: 0.45rem;
  font-size: var(--t-h2);
  font-weight: 600;
  letter-spacing: -0.028em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.rail-note {
  display: block;
  margin-top: 0.4rem;
  font-size: var(--t-micro);
  line-height: 1.5;
  color: var(--ink-3);
  max-width: 22ch;
}

.section {
  padding: 6rem 0;
  border-top: 1px solid var(--rule);
}
.section-flush {
  border-top: 0;
}
.section-title {
  font-size: var(--t-h2);
  font-weight: 600;
  letter-spacing: -0.022em;
  line-height: 1.12;
  margin-bottom: 1.75rem;
  font-variation-settings: "wdth" 100;
}
.section-sub {
  font-size: var(--t-h4);
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.2;
  margin: 4rem 0 1rem;
}
.nf-title {
  font-size: var(--t-h1);
  line-height: 1;
  letter-spacing: -0.035em;
  font-variation-settings: "wdth" 88;
  max-width: 16ch;
  margin-bottom: 1.5rem;
}
.section-lede {
  font-size: var(--t-h4);
  line-height: 1.5;
  color: var(--ink-2);
  max-width: 56ch;
  margin-bottom: 2.5rem;
}

.prose {
  max-width: 68ch;
  color: var(--ink-2);
  font-family: var(--font-serif);
  font-size: var(--t-body);
  line-height: 1.62;
}
.prose p + p {
  margin-top: 1.1em;
}
.prose strong {
  color: var(--ink);
  font-weight: 600;
}
code {
  font-family: var(--font-mono);
  font-size: 0.86em;
  color: var(--ink);
  background: var(--surface-2);
  padding: 0.1em 0.3em;
}

.ln {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  text-decoration-color: color-mix(in srgb, var(--accent) 45%, transparent);
  transition: color 0.15s var(--ease), text-decoration-color 0.15s var(--ease);
}
.ln:hover {
  text-decoration-color: var(--accent);
}
.ln-plain {
  color: var(--ink-2);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  text-decoration-color: var(--rule-strong);
  transition: color 0.15s var(--ease), text-decoration-color 0.15s var(--ease);
}
.ln-plain:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

.brand,
.hero-actions a,
.ln,
.ln-plain,
.tbl .c-name a,
.tbl .c-links a,
.ref-title,
.ref-venue a,
.spec-row dd a,
.footer-meta a,
.crumb a,
.case-nav a {
  display: inline-block;
  padding-block: 0.25rem;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--rule);
}
.nav-in {
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.brand {
  font-size: var(--t-body);
  font-weight: 600;
  letter-spacing: -0.015em;
  white-space: nowrap;
  font-variation-settings: "wdth" 92;
  transition: color 0.15s var(--ease);
}
.brand:hover {
  color: var(--accent);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.nav-links a {
  font-size: var(--t-ui);
  color: var(--ink-2);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
  text-decoration-color: transparent;
  padding: 0.3rem 0;
  transition: color 0.15s var(--ease), text-decoration-color 0.15s var(--ease);
}
.nav-links a:hover {
  color: var(--ink);
  text-decoration-color: var(--rule-strong);
}
.nav-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.nav-ext {
  display: flex;
  gap: 0.9rem;
  font-size: var(--t-ui);
  color: var(--ink-3);
}
.nav-ext a {
  padding: 0.4rem 0;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
  text-decoration-color: transparent;
  transition: color 0.15s var(--ease), text-decoration-color 0.15s var(--ease);
}
.nav-ext a:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}
.nav-resume {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  font-size: var(--t-ui);
  font-weight: 500;
  color: var(--ink);
  border: 1px solid var(--control);
  border-radius: 3px;
  padding: 0.3rem 0.7rem;
  transition: color 0.15s var(--ease), border-color 0.15s var(--ease);
}
.nav-resume-m {
  display: none;
}
.nav-resume:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.icon-btn {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--control);
  border-radius: 3px;
  color: var(--ink-3);
  transition: color 0.15s var(--ease), border-color 0.15s var(--ease);
}
.icon-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.icon-btn .i-sun {
  display: none;
}
[data-theme="dark"] .icon-btn .i-sun {
  display: block;
}
[data-theme="dark"] .icon-btn .i-moon {
  display: none;
}
.hamburger {
  display: none;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--control);
  border-radius: 3px;
  color: var(--ink-2);
}

.hero {
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1.5rem;
}
.hero-top {
  padding-top: clamp(3rem, 7vw, 5.5rem);
  padding-bottom: clamp(2rem, 4vw, 3rem);
}

.hero-stage {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
}
.hero-say {
  min-width: 0;
}
.hero-id {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 1.1rem;
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
  font-size: var(--t-ui);
  color: var(--ink-3);
}
.hero-id b {
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.hero h1 {
  font-size: var(--t-h1);
  font-weight: 600;
  line-height: 0.94;
  letter-spacing: -0.035em;
  font-variation-settings: "wdth" 70;
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
}
.hero-sub {
  font-size: var(--t-h4);
  line-height: 1.5;
  color: var(--ink-2);
  max-width: 50ch;
}

.hero-plate {
  position: relative;
  width: 100%;
}
.hero-plate .shot {
  aspect-ratio: 16 / 9;
  background: var(--surface-2);
}
.plate {
  display: block;
  position: relative;
}
.plate-caption {
  display: block;
  margin-top: 0.55rem;
  max-width: 46ch;
  font-size: var(--t-micro);
  line-height: 1.5;
  color: var(--ink-3);
}

.hero-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 1.6rem;
  font-size: var(--t-ui);
  margin-top: 1.75rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.6rem;
  font-size: var(--t-ui);
  margin-top: 2rem;
}

@media (min-width: 861px) {
  .hero-stage {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    gap: clamp(1.75rem, 3vw, 3rem);
    align-items: start;
  }
  .hero h1 {
    font-size: clamp(2.75rem, 6vw, 6rem);
  }
}

.frame {
  display: block;
  border: 1px solid var(--rule);
  background: var(--surface);
  overflow: hidden;
  transition: border-color 0.15s var(--ease);
}
.frame:hover {
  border-color: var(--accent);
}

.shot {
  display: block;
  position: relative;
  overflow: hidden;
  background: var(--surface-2);
}
.shot img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}
.shot picture {
  display: block;
}

.shot-natural {
  display: block;
  position: relative;
  overflow: hidden;
  background: var(--surface-2);
}
.shot-natural picture,
.shot-natural img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cap-note {
  display: block;
  font-size: var(--t-micro);
  line-height: 1.55;
  color: var(--ink-3);
  padding: 0.6rem 0.8rem;
  border-top: 1px solid var(--rule);
  max-width: 78ch;
}

[data-cat="llm"] { --cat: var(--cat-llm); }
[data-cat="ml"] { --cat: var(--cat-ml); }
[data-cat="data"] { --cat: var(--cat-data); }

.feat {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 1.5rem clamp(1.5rem, 3vw, 2.5rem);
  align-items: start;
  padding: 2rem 0;
  border-bottom: 1px solid var(--rule);
}
.feat:first-child {
  padding-top: 0;
}
@media (min-width: 861px) {
  #featured .feat:nth-child(even) .feat-media {
    order: 2;
  }
}
.feat-media .shot {
  aspect-ratio: 16 / 9;
}
.feat-media .plate-caption {
  max-width: none;
}
.feat-meta {
  font-size: var(--t-micro);
  color: var(--cat, var(--ink-3));
  margin-bottom: 0.6rem;
}
.feat-body h3 {
  font-size: clamp(1.375rem, 2.3vw, 1.9375rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.12;
  font-variation-settings: "wdth" 82;
  text-wrap: balance;
  margin-bottom: 0.75rem;
}
.feat-body h3 a:hover {
  color: var(--accent);
}
.feat-text {
  font-size: var(--t-body);
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 54ch;
}
.feat-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.5rem;
  margin-top: 1.25rem;
  font-size: var(--t-ui);
}

.tbl {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}
.tbl thead th {
  font-size: var(--t-micro);
  font-weight: 500;
  color: var(--ink-3);
  padding: 0 1rem 0.55rem 0;
  border-bottom: 1px solid var(--ink);
  white-space: nowrap;
}
.tbl tbody tr {
  border-bottom: 1px solid var(--rule);
}
.tbl tbody td {
  padding: 0.85rem 1rem 0.85rem 0;
  vertical-align: top;
}
.tbl .c-year {
  font-size: var(--t-ui);
  color: var(--ink-3);
  white-space: nowrap;
  width: 1%;
}
.tbl .c-name {
  width: 24%;
}
.tbl .c-name .cat {
  display: block;
  font-size: var(--t-micro);
  color: var(--cat, var(--ink-3));
  margin-top: 0.15rem;
}
.tbl .c-name a {
  display: inline-block;
  font-size: var(--t-ui);
  font-weight: 500;
  line-height: 1.35;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  text-decoration-color: transparent;
  transition: color 0.15s var(--ease), text-decoration-color 0.15s var(--ease);
}
.tbl .c-name a:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}
.tbl .c-desc {
  color: var(--ink-2);
  font-size: var(--t-ui);
  line-height: 1.5;
  padding-right: 2rem;
}
.tbl .c-links {
  width: 1%;
  white-space: nowrap;
  text-align: right;
  font-size: var(--t-micro);
}
.tbl .c-links a {
  display: inline-block;
  padding: 0.3rem 0;
  color: var(--ink-3);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  text-decoration-color: transparent;
  transition: color 0.15s var(--ease), text-decoration-color 0.15s var(--ease);
}
.tbl .c-links a:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}
.tbl .c-links span + span {
  margin-left: 0.8rem;
}
.tbl tbody tr:hover .c-desc {
  color: var(--ink);
}
.tbl .emptyrow td {
  padding: 1.5rem 0;
  font-size: var(--t-ui);
  color: var(--ink-2);
}
.flt {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.5rem;
  margin-bottom: 1rem;
  font-size: var(--t-ui);
}
.flt button {
  display: inline-block;
  padding-block: 0.25rem;
  color: var(--ink-3);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
  text-decoration-color: transparent;
  transition: color 0.15s var(--ease), text-decoration-color 0.15s var(--ease);
}
.flt button:hover {
  color: var(--ink);
  text-decoration-color: var(--rule-strong);
}
.flt button[aria-pressed="true"] {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

.section-wide {
  padding: clamp(4.5rem, 8vw, 7rem) 0;
}
.section-head {
  font-size: var(--t-h2);
  font-weight: 600;
  letter-spacing: -0.022em;
  line-height: 1.1;
  margin-bottom: clamp(2rem, 4vw, 3rem);
  font-variation-settings: "wdth" 88;
}
.jobs {
  border-top: 1px solid var(--ink);
  padding-top: 0.5rem;
}
.job {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 1.5rem clamp(2rem, 5vw, 5rem);
  padding: clamp(2rem, 3.5vw, 2.75rem) 0;
  align-items: start;
}
.job-lede h3 {
  font-size: clamp(1.375rem, 2.3vw, 1.9375rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.12;
  font-variation-settings: "wdth" 82;
  text-wrap: balance;
}
.job-when {
  font-size: var(--t-micro);
  color: var(--ink-3);
  margin-top: 0.6rem;
}
.job-points {
  list-style: none;
  margin: 0;
  display: grid;
  gap: 0.5rem;
  font-size: var(--t-body);
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 58ch;
}
.job-points li {
  position: relative;
  padding-left: 1.2rem;
}
.job-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--rule-strong);
}
.job-terms,
.feat-terms {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1rem;
}
.job-terms span,
.feat-terms span {
  font-size: var(--t-ui);
  line-height: 1.5;
  color: var(--ink-2);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 0.15rem 0.5rem;
}

.tools {
  max-width: 82ch;
  border-top: 1px solid var(--ink);
}
.tool {
  display: grid;
  grid-template-columns: 10.5rem minmax(0, 1fr);
  gap: 0.5rem 1.75rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--rule);
}
.tool dt {
  font-size: var(--t-ui);
  font-weight: 600;
  letter-spacing: -0.008em;
}
.tool dd {
  font-size: var(--t-ui);
  line-height: 1.55;
  color: var(--ink-2);
}

.refs {
  counter-reset: ref;
}
.ref {
  counter-increment: ref;
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr) auto;
  gap: 1.25rem;
  padding: 1.05rem 0;
  border-bottom: 1px solid var(--rule);
  align-items: baseline;
}
.ref::before {
  content: counter(ref) ".";
  font-size: var(--t-micro);
  color: var(--ink-3);
}
.ref-body {
  max-width: 68ch;
}
.ref-title {
  display: block;
  font-family: var(--font-serif);
  font-size: var(--t-body);
  line-height: 1.45;
  padding-left: 1.5rem;
  text-indent: -1.5rem;
  color: var(--ink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  text-decoration-color: var(--rule-strong);
  transition: text-decoration-color 0.15s var(--ease);
}
.ref-title:hover {
  text-decoration-color: var(--accent);
}
.ref-venue {
  display: block;
  font-size: var(--t-micro);
  color: var(--ink-3);
  margin-top: 0.3rem;
  padding-left: 1.5rem;
}
.ref-venue a {
  color: var(--ink-3);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  text-decoration-color: var(--rule);
  padding-inline: 0.15rem;
}
.ref-venue a:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}
.ref-cites {
  font-size: var(--t-micro);
  color: var(--ink-3);
  white-space: nowrap;
  text-align: right;
}
.ref-cites b {
  font-weight: 500;
  color: var(--ink-2);
}

.footer {
  border-top: 1px solid var(--ink);
  padding: 5rem 0 2.5rem;
}
.footer-mail {
  font-size: clamp(1.375rem, 5.5vw, 2.75rem);
  overflow-wrap: anywhere;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-variation-settings: "wdth" 90;
  margin-bottom: 1.1rem;
  display: block;
  width: fit-content;
  color: var(--ink);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.14em;
  text-decoration-color: var(--accent);
  transition: color 0.15s var(--ease);
}
.footer-mail:hover {
  color: var(--accent);
}
.footer .prose {
  font-size: var(--t-ui);
  max-width: 60ch;
}
.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.75rem;
  font-size: var(--t-ui);
  margin-top: 3.5rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--rule);
}
.footer-meta a {
  color: var(--ink-2);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  text-decoration-color: var(--rule-strong);
  transition: color 0.15s var(--ease), text-decoration-color 0.15s var(--ease);
}
.footer-meta a:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}
.footer-bottom {
  margin-top: 1.5rem;
  font-size: var(--t-micro);
  color: var(--ink-3);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}

.crumb {
  font-size: var(--t-ui);
  color: var(--ink-3);
  padding: 1.75rem 0 0;
}
.crumb a {
  color: var(--ink-2);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  text-decoration-color: var(--rule-strong);
}
.crumb a:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

.case-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
  gap: 2.5rem 3rem;
  align-items: start;
  padding: 2.5rem 0 3rem;
  border-bottom: 1px solid var(--ink);
}
.case-lede {
  min-width: 0;
}
.case-meta {
  font-size: var(--t-ui);
  color: var(--cat, var(--ink-3));
  margin-top: 1rem;
  padding-top: 0.5rem;
  border-top: 2px solid var(--cat, var(--rule));
}
.case-media {
  margin-top: 0;
}
@media (max-width: 860px) {
  .case-hero {
    grid-template-columns: minmax(0, 1fr);
  }
}
.case-hero h1 {
  font-size: clamp(1.75rem, 3.4vw, 2.75rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.035em;
  font-variation-settings: "wdth" 88;
  margin-bottom: 1.1rem;
  max-width: 18ch;
}
.case-tagline {
  font-family: var(--font-serif);
  font-size: var(--t-h4);
  line-height: 1.5;
  color: var(--ink-2);
  max-width: 58ch;
  margin-bottom: 1.75rem;
}
.case-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem;
  font-size: var(--t-ui);
  margin-bottom: 0.75rem;
}
.case-toc {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 1.25rem;
  font-size: var(--t-ui);
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
}
.case-toc span {
  color: var(--ink-3);
}
.case-toc ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
}
.case-toc a {
  display: inline-block;
  padding-block: 0.25rem;
  color: var(--ink-2);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  text-decoration-color: var(--rule-strong);
  transition: color 0.15s var(--ease), text-decoration-color 0.15s var(--ease);
}
.case-toc a:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

.spec {
  border-top: 1px solid var(--ink);
}
.spec-row {
  display: grid;
  grid-template-columns: 9rem minmax(0, 1fr);
  gap: 1.5rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--rule);
  align-items: baseline;
}
.spec-row dt {
  font-size: var(--t-ui);
  color: var(--ink-3);
}
.spec-row dd {
  font-size: var(--t-ui);
  color: var(--ink);
  overflow-wrap: anywhere;
}
.spec-row dd .u {
  color: var(--ink-3);
}
.spec-row dd a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  text-decoration-color: color-mix(in srgb, var(--accent) 45%, transparent);
}
.spec-row dd a:hover {
  text-decoration-color: var(--accent);
}

.metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 0 2.75rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--rule);
}
.metrics .m-k {
  font-family: var(--font-mono);
  font-size: var(--t-h4);
  font-weight: 500;
  line-height: 1.1;
  color: var(--ink);
}
.metrics .m-v {
  font-size: var(--t-micro);
  color: var(--ink-3);
  margin-top: 0.2rem;
}

.case-block {
  padding: 3.5rem 0;
  border-bottom: 1px solid var(--rule);
}
.case-block:last-of-type {
  border-bottom: none;
}
.cols2 {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 3.5rem;
}
.cols2 h3 {
  font-size: var(--t-ui);
  font-weight: 600;
  letter-spacing: 0;
  margin-bottom: 0.6rem;
}

.steps {
  border-top: 1px solid var(--ink);
  counter-reset: step;
}
.step {
  display: grid;
  grid-template-columns: 2.25rem minmax(0, 1fr);
  gap: 1rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--rule);
}
.step > div {
  max-width: 76ch;
}
.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: var(--t-micro);
  color: var(--ink-3);
}
.step h3 {
  font-size: var(--t-h4);
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.25;
  margin-bottom: 0.45rem;
  font-variation-settings: "wdth" 96;
}
.step p {
  font-family: var(--font-serif);
  color: var(--ink-2);
  font-size: var(--t-body);
  line-height: 1.55;
}

.verdict {
  margin-top: 2.5rem;
  max-width: 76ch;
  border: 1px solid var(--ink);
  background: var(--surface);
  padding: 1.5rem 1.75rem;
}
.verdict h3 {
  font-size: var(--t-ui);
  font-weight: 600;
  margin-bottom: 0.6rem;
}
.verdict p {
  font-family: var(--font-serif);
  color: var(--ink);
  font-size: var(--t-body);
  line-height: 1.62;
}

.diagram {
  border: 1px solid var(--rule);
  background: var(--surface);
}
.diagram-scroll {
  overflow-x: auto;
  padding: 1.5rem 0.75rem;
}
.diagram svg {
  width: 100%;
  height: auto;
  min-width: 860px;
  display: block;
  overflow: visible;
}
.dia .n {
  fill: var(--surface);
  stroke: var(--ink-3);
  stroke-width: 1.5;
}
.dia .n-store {
  fill: var(--surface-2);
}
.dia .n-key {
  fill: var(--accent-soft);
  stroke: var(--accent);
}
.dia text {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  fill: var(--ink);
  dominant-baseline: middle;
}
.dia .t-key {
  fill: var(--accent-ink);
}
.dia .t-group {
  font-size: 13px;
  fill: var(--ink-2);
}
.dia .edge {
  fill: none;
  stroke: var(--ink-3);
  stroke-width: 1.5;
}
.dia .edge-key {
  stroke: var(--accent);
  stroke-dasharray: 7 5;
  animation: flow 1.1s linear 1 both;
}
@keyframes flow {
  from { stroke-dashoffset: 24; }
  to { stroke-dashoffset: 0; }
}
.dia .edge-lbl {
  font-size: 13px;
  fill: var(--ink-2);
}
.dia .mk {
  fill: var(--ink-3);
}
.dia .mkk {
  fill: var(--accent);
}
.dia .rule-h {
  stroke: var(--rule-strong);
  stroke-width: 1;
}
.dia .dash {
  fill: none;
  stroke: var(--ink-3);
  stroke-width: 1.5;
  stroke-dasharray: 3 3;
}

.case-nav {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding: 2.5rem 0;
  flex-wrap: wrap;
}
.case-nav a {
  display: inline-block;
  font-size: var(--t-ui);
  color: var(--ink-2);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  text-decoration-color: var(--rule-strong);
  transition: color 0.15s var(--ease), text-decoration-color 0.15s var(--ease);
}
.case-nav a:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}
.case-nav .dir {
  display: block;
  font-size: var(--t-micro);
  color: var(--ink-3);
  margin-bottom: 0.25rem;
  text-decoration: none;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3.5rem;
  z-index: 9999;
  background: var(--ink);
  color: var(--paper);
  font-size: var(--t-ui);
  padding: 0.6rem 1rem;
  transition: top 0.15s var(--ease);
}
.skip-link:focus {
  top: 0;
}
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 1100px) {
  :root {
    --rail: 10rem;
  }
  .rail-grid,
  .job {
    gap: 0 1.75rem;
  }
}

@media (max-width: 960px) {
  .nav-links {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    background: var(--nav-bg);
    border-bottom: 1px solid var(--rule);
    padding: 1.25rem 2.5rem 1.75rem;
    transform: translateY(-140%);
    transition: transform 0.2s var(--ease);
  }
  .nav-links.open {
    transform: translateY(0);
  }
  .hamburger {
    display: inline-flex;
  }
  .nav-resume {
    display: none;
  }
  .nav-resume-m {
    display: block;
  }
}

@media (max-width: 860px) {
  .rail-grid,
  .job {
    grid-template-columns: minmax(0, 1fr);
  }
  .rail {
    position: static;
    margin-bottom: 1.5rem;
  }
  .feat {
    grid-template-columns: minmax(0, 1fr);
  }
  .cols2 {
    grid-template-columns: minmax(0, 1fr);
    gap: 2rem;
  }
  .spec-row {
    grid-template-columns: 7rem minmax(0, 1fr);
  }
  .tbl thead {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }
  .tbl tbody tr {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    grid-template-areas: "year name" "desc desc" "links links";
    gap: 0.3rem 0.8rem;
    padding: 1rem 0;
  }
  .tbl tbody td {
    padding: 0;
  }
  .tbl .c-year {
    grid-area: year;
    width: auto;
    align-self: center;
  }
  .tbl .c-name {
    grid-area: name;
    width: auto;
  }
  .tbl .c-desc {
    grid-area: desc;
    width: auto;
    padding-right: 0;
  }
  .tbl .c-links {
    grid-area: links;
    width: auto;
    text-align: left;
    padding-top: 0.15rem;
  }
  .tbl tbody tr.emptyrow {
    display: block;
  }
  .tbl tbody tr.emptyrow td {
    padding: 1rem 0 0.4rem;
  }
  .ref {
    grid-template-columns: 2rem minmax(0, 1fr);
  }
  .ref-cites {
    grid-column: 2;
    text-align: left;
  }
}

@media (max-width: 640px) {
  .wrap {
    padding: 0 1.25rem;
  }
  .section {
    padding: 4rem 0;
  }
  .nav-right {
    gap: 0.6rem;
  }
  .nav-ext {
    display: none;
  }
  .spec-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.2rem;
  }
  .tool {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media print {
  .nav,
  .crumb,
  .case-nav,
  .footer {
    display: none;
  }
  body {
    background: #fff;
  }
  .section,
  .case-block {
    break-inside: avoid;
  }
}