/* ---------- Tokens ---------- */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 4.75rem);

  --space-1: .25rem; --space-2: .5rem; --space-3: .75rem; --space-4: 1rem; --space-5: 1.25rem;
  --space-6: 1.5rem; --space-8: 2rem; --space-10: 2.5rem; --space-12: 3rem; --space-16: 4rem;
  --space-20: 5rem; --space-24: 6rem; --space-32: 8rem;

  --radius-sm: .25rem; --radius-md: .5rem; --radius-lg: .75rem;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-interactive: 180ms var(--ease);

  --font-display: 'General Sans', 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'General Sans', 'Noto Sans SC', 'Helvetica Neue', sans-serif;
  --font-mono: 'General Sans', 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;

  --content-wide: 1240px;
}

:root, [data-theme='light'] {
  --color-bg: #f6f4ef;
  --color-surface: #fbfaf7;
  --color-surface-offset: #efece5;
  --color-border: oklch(0.25 0.03 300 / 0.14);
  --color-divider: oklch(0.25 0.03 300 / 0.09);
  --color-text: #1f1b27;
  --color-text-muted: #5f5a68;
  --color-text-faint: #9a96a1;
  --color-primary: #472f71;
  --color-primary-hover: #36235a;
  --color-primary-soft: #e7e1f0;
  --color-on-primary: #f8f6fb;
  --color-ink-band: #241a35;
  --color-on-ink: #ece7f4;
  --shadow-md: 0 6px 24px oklch(0.25 0.04 300 / 0.08);
}

[data-theme='dark'] {
  --color-bg: #141219;
  --color-surface: #1b1822;
  --color-surface-offset: #211d2a;
  --color-border: oklch(0.9 0.02 300 / 0.12);
  --color-divider: oklch(0.9 0.02 300 / 0.07);
  --color-text: #e6e2ec;
  --color-text-muted: #a49eae;
  --color-text-faint: #6e6878;
  --color-primary: #bfa9e8;
  --color-primary-hover: #d3c3f1;
  --color-primary-soft: #2c2440;
  --color-on-primary: #1a1424;
  --color-ink-band: #0e0c13;
  --color-on-ink: #e6e2ec;
  --shadow-md: 0 6px 24px oklch(0 0 0 / 0.35);
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-text-size-adjust: none; text-size-adjust: none;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth; scroll-padding-top: var(--space-24);
}
body {
  min-height: 100dvh; font-family: var(--font-body); font-size: var(--text-base);
  line-height: 1.6; color: var(--color-text); background: var(--color-bg);
  transition: background-color 300ms var(--ease), color 300ms var(--ease);
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
ol, ul { list-style: none; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.15; font-weight: 500; }
p { text-wrap: pretty; }
::selection { background: var(--color-primary); color: var(--color-on-primary); }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: 2px; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}

.wrap { width: min(100% - 2 * clamp(var(--space-5), 4vw, var(--space-12)), var(--content-wide)); margin-inline: auto; }
.mono { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: .02em; }
.eyebrow {
  font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase;
  letter-spacing: .12em; color: var(--color-primary); margin-bottom: var(--space-4);
}
.skip { position: absolute; left: -999px; top: var(--space-2); background: var(--color-primary); color: var(--color-on-primary); padding: var(--space-2) var(--space-4); z-index: 100; border-radius: var(--radius-sm); }
.skip:focus { left: var(--space-4); }

/* Chinese mode: tighter tracking, serif display */
html[lang='zh-CN'] { --font-display: 'Noto Sans SC', 'General Sans', sans-serif; --font-body: 'Noto Sans SC', 'General Sans', sans-serif; --font-mono: 'Noto Sans SC', 'General Sans', sans-serif; }
html[lang='zh-CN'] .eyebrow { letter-spacing: .06em; }
html[lang='zh-CN'] body { line-height: 1.75; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  min-height: 48px; padding: 0 var(--space-6); border-radius: var(--radius-sm); border: 0;
  background: var(--color-primary); color: var(--color-on-primary);
  font-size: var(--text-sm); font-weight: 500; cursor: pointer; white-space: nowrap;
  transition: background-color var(--transition-interactive), transform var(--transition-interactive);
}
.btn:hover { background: var(--color-primary-hover); }
.btn:active { transform: translateY(1px); }
.btn--sm { min-height: 40px; padding: 0 var(--space-4); }
.link-arrow { font-size: var(--text-sm); font-weight: 500; display: inline-flex; gap: var(--space-2); align-items: center; min-height: 48px; border-bottom: 1px solid transparent; transition: color var(--transition-interactive); }
.link-arrow:hover { color: var(--color-primary); }
.link-arrow span[aria-hidden] { transition: transform var(--transition-interactive); }
.link-arrow:hover span[aria-hidden] { transform: translateX(4px); }

/* ---------- Header ---------- */
.header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent; transition: border-color 300ms var(--ease);
}
.header.is-scrolled { border-bottom-color: var(--color-divider); }
.header__inner { display: flex; align-items: center; gap: var(--space-8); min-height: 76px; }
.brand { display: flex; align-items: center; gap: var(--space-3); color: var(--color-primary); }
.brand__logo { height: 44px; width: auto; max-width: none; }
.brand__logo--dark { display: none; }
[data-theme='dark'] .brand__logo--light { display: none; }
[data-theme='dark'] .brand__logo--dark { display: block; }
.nav { display: flex; gap: var(--space-6); margin-left: auto; }
.nav a { font-size: var(--text-sm); color: var(--color-text-muted); transition: color var(--transition-interactive); padding-block: var(--space-2); }
.nav a:hover { color: var(--color-text); }
.header__tools { display: flex; align-items: center; gap: var(--space-2); }
.lang, .icon-btn {
  min-width: 44px; height: 44px; display: grid; place-items: center; border-radius: var(--radius-sm);
  background: transparent; border: 1px solid var(--color-border); cursor: pointer; font-size: var(--text-sm);
  transition: background-color var(--transition-interactive);
}
.lang { padding-inline: var(--space-3); font-family: 'Noto Sans SC', var(--font-body); }

.menu-btn { display: none; }
.lang:hover, .icon-btn:hover { background: var(--color-surface-offset); }

/* ---------- Hero ---------- */
.hero { padding-block: clamp(var(--space-12), 7vw, var(--space-24)) clamp(var(--space-10), 5vw, var(--space-16)); }
.hero__grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: clamp(var(--space-10), 6vw, var(--space-20)); align-items: center; }
.hero__title { font-family: var(--font-display); font-size: var(--text-3xl); line-height: 1.04; letter-spacing: -0.02em; font-weight: 600; max-width: 14ch; }
html[lang='zh-CN'] .hero__title { max-width: 13em; font-size: var(--text-2xl); line-height: 1.3; letter-spacing: 0; font-weight: 500; }
.hero__lede { margin-top: var(--space-6); max-width: 52ch; color: var(--color-text-muted); }
.hero__actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-6); margin-top: var(--space-8); }

.pk { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-5) var(--space-5) var(--space-4); box-shadow: var(--shadow-md); }
.pk__head { display: flex; justify-content: space-between; color: var(--color-text-muted); padding-bottom: var(--space-3); border-bottom: 1px solid var(--color-divider); }
.pk__tag { color: var(--color-primary); }
.pk__svg { width: 100%; height: auto; margin-top: var(--space-2); overflow: visible; }
.pk__grid line { stroke: var(--color-divider); stroke-width: 1; }
.pk__grid line:nth-child(-n+2) { stroke: var(--color-border); }
.pk__axis text { fill: var(--color-text-faint); font-size: 11px; }
.pk__curve { fill: none; stroke: var(--color-primary); stroke-width: 2.25; stroke-linecap: round; stroke-dasharray: 700; stroke-dashoffset: 700; animation: draw 2.2s var(--ease) .3s forwards; }
.pk__auc { fill: var(--color-primary); opacity: 0; animation: fade .8s ease 1.9s forwards; }
.pk__pts circle { fill: var(--color-surface); stroke: var(--color-primary); stroke-width: 1.75; opacity: 0; animation: fade .4s ease forwards; }
.pk__pts circle:nth-child(1){animation-delay:.6s}.pk__pts circle:nth-child(2){animation-delay:.75s}.pk__pts circle:nth-child(3){animation-delay:.9s}.pk__pts circle:nth-child(4){animation-delay:1.05s}
.pk__pts circle:nth-child(5){animation-delay:1.2s}.pk__pts circle:nth-child(6){animation-delay:1.4s}.pk__pts circle:nth-child(7){animation-delay:1.6s}.pk__pts circle:nth-child(8){animation-delay:1.8s}
.pk__notes { opacity: 0; animation: fade .6s ease 2.1s forwards; }
.pk__notes text { fill: var(--color-text); font-size: 12px; }
.pk__drop { stroke: var(--color-primary); stroke-dasharray: 3 4; opacity: .5; }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes fade { to { opacity: 1; } }
.pk__auc { animation-name: fadeAuc; } @keyframes fadeAuc { to { opacity: .08; } }
.pk__cap { margin-top: var(--space-2); font-size: var(--text-xs); color: var(--color-text-muted); }

.creds { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: clamp(var(--space-12), 6vw, var(--space-20)); border-top: 1px solid var(--color-border); }
.creds > div { padding: var(--space-5) var(--space-5) 0 0; }
.creds > div + div { padding-left: var(--space-5); border-left: 1px solid var(--color-divider); }
.creds dt { font-family: var(--font-display); font-size: var(--text-lg); font-weight: 500; }
.creds dd { font-size: var(--text-sm); color: var(--color-text-muted); margin-top: var(--space-1); }

/* ---------- Full-bleed ---------- */
.bleed img { width: 100%; height: clamp(280px, 52vw, 680px); object-fit: cover; object-position: 50% 62%; }

/* ---------- Sections ---------- */
.section { padding-block: clamp(var(--space-16), 9vw, var(--space-32)); }
.section__head { max-width: 760px; margin-bottom: clamp(var(--space-10), 5vw, var(--space-16)); }
.section__head--split { max-width: none; display: grid; grid-template-columns: 1.3fr 1fr; gap: var(--space-12); align-items: end; }
.section__title { font-family: var(--font-display); font-size: var(--text-2xl); font-weight: 600; letter-spacing: -0.015em; }
html[lang='zh-CN'] .section__title { font-size: var(--text-xl); font-weight: 500; letter-spacing: 0; line-height: 1.4; }
.section__intro { color: var(--color-text-muted); max-width: 46ch; }

/* Services */
.svc-groups { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(var(--space-10), 6vw, var(--space-20)); }
.svc-group__label { color: var(--color-text-muted); text-transform: uppercase; letter-spacing: .12em; padding-bottom: var(--space-4); border-bottom: 1px solid var(--color-text); font-weight: 500; }
.svc-list li { display: grid; grid-template-columns: 3rem 1fr; gap: var(--space-4); padding-block: var(--space-6); border-bottom: 1px solid var(--color-divider); }
.svc__n { color: var(--color-primary); padding-top: .35em; }
.svc-list h4 { font-size: var(--text-lg); font-weight: 500; font-family: var(--font-body); margin-bottom: var(--space-2); }
.svc-list p { color: var(--color-text-muted); font-size: var(--text-base); max-width: 48ch; }

.focus { margin-top: clamp(var(--space-12), 6vw, var(--space-20)); display: grid; grid-template-columns: 12rem 1fr; gap: var(--space-6); align-items: start; }
.focus__label { color: var(--color-text-muted); text-transform: uppercase; letter-spacing: .12em; padding-top: var(--space-2); }
.tags { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.tags li { font-size: var(--text-sm); padding: var(--space-2) var(--space-4); border: 1px solid var(--color-border); border-radius: 999px; background: var(--color-surface); }

/* Approach */
.approach { background: var(--color-surface-offset); }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); counter-reset: s; }
.steps li { padding: var(--space-6) var(--space-6) var(--space-2) 0; border-top: 2px solid var(--color-primary); position: relative; }
.steps li + li { padding-left: var(--space-6); }
.steps li + li::before { content: ''; position: absolute; left: 0; top: var(--space-6); bottom: 0; width: 1px; background: var(--color-border); }
.step__n { color: var(--color-primary); }
.steps h3 { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 600; margin: var(--space-3) 0 var(--space-3); }
.steps p { color: var(--color-text-muted); font-size: var(--text-base); }

/* Track record */
.figures { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--color-text); }
.figures > div { padding: var(--space-6) var(--space-6) var(--space-6) 0; }
.figures > div + div { padding-left: var(--space-6); border-left: 1px solid var(--color-divider); }
.figures dt { font-family: var(--font-display); font-size: var(--text-2xl); line-height: 1; color: var(--color-primary); font-weight: 600; letter-spacing: -0.02em; }
.figures dd { margin-top: var(--space-3); font-size: var(--text-sm); color: var(--color-text-muted); max-width: 26ch; }
.programs { margin-top: clamp(var(--space-10), 5vw, var(--space-16)); display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-6) clamp(var(--space-10), 6vw, var(--space-20)); }
.programs__label { text-transform: uppercase; letter-spacing: .12em; color: var(--color-text-muted); font-weight: 500; padding-bottom: var(--space-3); border-bottom: 1px solid var(--color-border); }
.programs ul li { padding-block: var(--space-3); border-bottom: 1px solid var(--color-divider); color: var(--color-text-muted); }
.programs ul li strong { color: var(--color-text); font-weight: 500; margin-right: var(--space-1); }
.programs__note { margin-top: var(--space-4); font-size: var(--text-sm); color: var(--color-text-muted); max-width: 48ch; }
.programs__foot { grid-column: 1 / -1; font-size: var(--text-xs); color: var(--color-text-faint); }

/* Timeline */
.timeline__label { margin-top: var(--space-12); text-transform: uppercase; letter-spacing: .12em; color: var(--color-text-muted); font-weight: 500; padding-bottom: var(--space-3); border-bottom: 1px solid var(--color-border); }
.timeline li { display: grid; grid-template-columns: 9rem 1fr; gap: var(--space-6); padding-block: var(--space-4); border-bottom: 1px solid var(--color-divider); }
.timeline__yr { color: var(--color-primary); padding-top: .2em; }
.timeline li div { display: grid; gap: var(--space-1); }
.timeline li strong { font-weight: 500; }
.timeline li span:not(.timeline__yr) { color: var(--color-text-muted); font-size: var(--text-sm); }

/* Publications */
.about { border-top: 1px solid var(--color-divider); }
.pubs__grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: clamp(var(--space-10), 6vw, var(--space-20)); align-items: start; }
.pubs__label { text-transform: uppercase; letter-spacing: .12em; color: var(--color-text-muted); font-weight: 500; padding-bottom: var(--space-3); border-bottom: 1px solid var(--color-text); }
.pubs__label:not(:first-child) { margin-top: var(--space-12); }
.refs { counter-reset: ref; }
.ref { counter-increment: ref; display: grid; grid-template-columns: 2.5rem 1fr; padding-block: var(--space-5); border-bottom: 1px solid var(--color-divider); }
.ref::before { content: counter(ref, decimal-leading-zero); font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-primary); padding-top: .3em; grid-row: span 2; }
.ref__cite { font-size: var(--text-base); color: var(--color-text-muted); }
.ref__cite b { color: var(--color-text); font-weight: 600; }
.ref__cite i { color: var(--color-text); }
.ref__note { margin-top: var(--space-2); font-size: var(--text-sm); color: var(--color-primary); }
.ref--feature .ref__cite { font-family: var(--font-display); font-size: var(--text-lg); line-height: 1.45; color: var(--color-text); font-weight: 500; }
html[lang='zh-CN'] .ref--feature .ref__cite { font-family: var(--font-display); }
.pubs__more { margin-top: var(--space-6); color: var(--color-primary); }
.talks li { display: grid; grid-template-columns: 3.5rem 1fr; gap: var(--space-4); padding-block: var(--space-4); border-bottom: 1px solid var(--color-divider); }
.talks__yr { color: var(--color-primary); padding-top: .2em; }
.talks li div { display: grid; gap: var(--space-1); }
.talks strong { font-weight: 500; font-size: var(--text-base); line-height: 1.35; }
.talks li span:not(.talks__yr) { font-size: var(--text-sm); color: var(--color-text-muted); }
.pubs__editorial { margin-top: var(--space-10); }

/* Legal page */
.legal { padding-block: clamp(var(--space-12), 7vw, var(--space-24)); }
.legal__wrap { max-width: 760px; }
.legal__title { font-family: var(--font-display); font-size: var(--text-2xl); font-weight: 600; letter-spacing: -0.015em; }
html[lang='zh-CN'] .legal__title { font-size: var(--text-xl); font-weight: 500; }
.legal__date { color: var(--color-text-muted); margin-top: var(--space-4); padding-bottom: var(--space-8); border-bottom: 1px solid var(--color-border); }
.legal__sec { padding-block: var(--space-8); border-bottom: 1px solid var(--color-divider); }
.legal__sec h2 { font-size: var(--text-lg); font-weight: 600; margin-bottom: var(--space-3); }
.legal__sec p { color: var(--color-text-muted); max-width: 68ch; }
.legal__sec p + p { margin-top: var(--space-3); }
.legal__sec a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 3px; }
.legal__back { margin-top: var(--space-8); color: var(--color-primary); }

/* Automation band */
.band { position: relative; display: grid; grid-template-columns: 1.4fr 1fr; background: var(--color-ink-band); color: var(--color-on-ink); }
.band__img { width: 100%; height: 100%; min-height: 420px; object-fit: cover; }
.band__panel { padding: clamp(var(--space-10), 6vw, var(--space-24)) clamp(var(--space-6), 5vw, var(--space-20)); align-self: center; max-width: 560px; }
.band .eyebrow { color: #c9b8ec; }
.band__title { font-family: var(--font-display); font-size: var(--text-2xl); font-weight: 600; letter-spacing: -0.015em; margin-bottom: var(--space-6); }
html[lang='zh-CN'] .band__title { font-size: var(--text-xl); font-weight: 500; line-height: 1.4; }
.band p:not(.eyebrow) { color: color-mix(in oklab, var(--color-on-ink) 78%, transparent); }

/* About */
.about__grid { display: grid; grid-template-columns: 1.35fr 1fr; gap: clamp(var(--space-10), 7vw, var(--space-24)); align-items: start; }
.about__lede { font-size: var(--text-lg); line-height: 1.5; margin: var(--space-6) 0 var(--space-4); max-width: 40ch; }
.about__main > p:not(.eyebrow):not(.about__lede) { color: var(--color-text-muted); max-width: 60ch; }
.exp { margin-top: var(--space-12); border-top: 1px solid var(--color-border); }
.exp > div { display: grid; grid-template-columns: 9rem 1fr; gap: var(--space-6); padding-block: var(--space-5); border-bottom: 1px solid var(--color-divider); }
.exp dt { font-family: var(--font-mono); font-size: var(--text-sm); color: var(--color-primary); font-weight: 500; }
.exp dd { color: var(--color-text-muted); }
.about__side { position: sticky; top: 110px; }
.about__side img { border-radius: var(--radius-md); aspect-ratio: 4 / 5; object-fit: cover; object-position: 50% 20%; width: 100%; background: #e9e9ea; }
.about__li { margin-top: var(--space-5); color: var(--color-primary); }
.about__li svg { margin-right: var(--space-1); }
a.icon-btn { color: var(--color-text-muted); }
a.icon-btn:hover { color: var(--color-primary); }
.service-note { margin-top: var(--space-6); padding: var(--space-6); background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); }
.service-note h3 { text-transform: uppercase; letter-spacing: .12em; color: var(--color-primary); margin-bottom: var(--space-3); font-weight: 500; }
.service-note p { font-size: var(--text-sm); color: var(--color-text-muted); }
.service-note__orgs { margin-top: var(--space-4); color: var(--color-text) !important; }

/* Contact */
.contact { border-top: 1px solid var(--color-divider); }
.contact__grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: clamp(var(--space-10), 7vw, var(--space-24)); }
.contact__intro > p:not(.eyebrow) { color: var(--color-text-muted); margin-top: var(--space-5); max-width: 40ch; }
.contact__list { margin-top: var(--space-10); border-top: 1px solid var(--color-border); }
.contact__list li { display: grid; grid-template-columns: 7rem 1fr; padding-block: var(--space-4); border-bottom: 1px solid var(--color-divider); align-items: baseline; }
.contact__list .mono { color: var(--color-text-muted); text-transform: uppercase; letter-spacing: .1em; }
.contact__list a:hover { color: var(--color-primary); }

.form { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: clamp(var(--space-6), 4vw, var(--space-10)); display: grid; gap: var(--space-5); align-self: start; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); }
.field { display: grid; gap: var(--space-2); }
.field label { font-size: var(--text-sm); font-weight: 500; }
.field input, .field select, .field textarea {
  width: 100%; min-height: 48px; padding: var(--space-3) var(--space-4); border-radius: var(--radius-sm);
  border: 1px solid var(--color-border); background: var(--color-bg); font-size: var(--text-base);
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.field textarea { resize: vertical; min-height: 140px; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px color-mix(in oklab, var(--color-primary) 18%, transparent); }
.field [aria-invalid='true'] { border-color: #a1324a; }
.form__foot { display: flex; justify-content: space-between; align-items: center; gap: var(--space-6); flex-wrap: wrap; }
.form__privacy { font-size: var(--text-xs); color: var(--color-text-muted); max-width: 44ch; }
.form__privacy a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 3px; }
.form__error { font-size: var(--text-sm); color: #a1324a; }
[data-theme='dark'] .form__error { color: #f08aa0; }
.form__ok { font-size: var(--text-sm); color: var(--color-primary); padding: var(--space-3) var(--space-4); background: var(--color-primary-soft); border-radius: var(--radius-sm); }

/* Footer */
.footer { background: var(--color-ink-band); color: var(--color-on-ink); padding-block: var(--space-16) var(--space-10); }
.footer__inner { display: grid; grid-template-columns: 1.5fr 1fr; gap: var(--space-10); }
.footer__brand { display: flex; flex-direction: column; gap: var(--space-4); color: var(--color-on-ink); }
.footer__logo { height: 56px; width: auto; max-width: none; align-self: flex-start; }
.footer__entity { font-weight: 500; color: var(--color-on-ink) !important; }
.footer__brand p { font-size: var(--text-sm); color: color-mix(in oklab, var(--color-on-ink) 70%, transparent); max-width: 32ch; }
.footer__nav { display: flex; flex-wrap: wrap; gap: var(--space-3) var(--space-8); align-content: start; justify-self: end; }
.footer__nav a { font-size: var(--text-sm); }
.footer__nav a:hover { color: #c9b8ec; }
.footer__disclaimer { grid-column: 1 / -1; font-size: var(--text-xs); color: color-mix(in oklab, var(--color-on-ink) 60%, transparent); max-width: 90ch; }
.footer__legal a { text-decoration: underline; text-underline-offset: 3px; margin-left: var(--space-3); }
.footer__legal a:hover { color: #c9b8ec; }
.footer__legal { grid-column: 1 / -1; font-size: var(--text-xs); color: color-mix(in oklab, var(--color-on-ink) 55%, transparent); padding-top: var(--space-8); border-top: 1px solid oklch(1 0 0 / 0.1); }

/* Reveal */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1180px) {
  .nav { gap: var(--space-4); }
}
@media (max-width: 900px) {
  .menu-btn { display: grid; }
  .nav { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; gap: 0; margin: 0;
    background: var(--color-bg); border-bottom: 1px solid var(--color-divider); padding: var(--space-2) clamp(var(--space-5), 4vw, var(--space-12)) var(--space-4); }
  .nav.is-open { display: flex; }
  .nav a { padding-block: var(--space-3); font-size: var(--text-base); color: var(--color-text); border-bottom: 1px solid var(--color-divider); }
  .header__tools { margin-left: auto; }
  .hero__grid, .svc-groups, .about__grid, .contact__grid, .section__head--split { grid-template-columns: 1fr; }
  .section__head--split { gap: var(--space-4); }
  .creds { grid-template-columns: 1fr 1fr; }
  .creds > div:nth-child(3) { padding-left: 0; border-left: 0; }
  .creds > div:nth-child(n+3) { border-top: 1px solid var(--color-divider); margin-top: var(--space-5); }
  .steps { grid-template-columns: 1fr 1fr; row-gap: var(--space-8); }
  .steps li:nth-child(3) { padding-left: 0; } .steps li:nth-child(3)::before { display: none; }
  .band { grid-template-columns: 1fr; }
  .band__img { min-height: 260px; max-height: 360px; }
  .about__side { position: static; }
  .about__side { max-width: 420px; order: -1; }
  .about__side { display: contents; }
  .about__side img { order: -1; max-width: 420px; }
  .service-note { margin-top: 0; }
  .about__side img { aspect-ratio: 1 / 1; }
  .focus { grid-template-columns: 1fr; gap: var(--space-3); }
  .figures { grid-template-columns: 1fr 1fr; }
  .figures > div:nth-child(3) { padding-left: 0; border-left: 0; }
  .figures > div:nth-child(n+3) { border-top: 1px solid var(--color-divider); }
  .programs { grid-template-columns: 1fr; }
  .pubs__grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .header__inner { gap: var(--space-3); min-height: 64px; }
  .brand__logo { height: 34px; }
  .btn--sm { display: none; }
  .header__tools > a.icon-btn { display: none; }
  .field-row { grid-template-columns: 1fr; }
  .creds dt { font-size: var(--text-base); }
  .steps { grid-template-columns: 1fr; }
  .steps li + li { padding-left: 0; } .steps li + li::before { display: none; }
  .exp > div, .timeline li { grid-template-columns: 1fr; gap: var(--space-1); }
  .figures { grid-template-columns: 1fr; }
  .figures > div, .figures > div + div { padding-left: 0; border-left: 0; }
  .figures > div + div { border-top: 1px solid var(--color-divider); }
  .contact__list li { grid-template-columns: 1fr; gap: var(--space-1); }
  .footer__inner { grid-template-columns: 1fr; } .footer__nav { justify-self: start; }
  .form__foot .btn { width: 100%; }
}

.footer__brand p.footer__tagline { font-family: var(--font-body); font-weight: 500; font-size: var(--text-base); letter-spacing: .02em; color: var(--color-on-ink); }
.eyebrow.tagline { font-family: var(--font-body); font-size: var(--text-sm); font-weight: 600; text-transform: none; letter-spacing: .04em; }
.awards { margin-top: var(--space-12); }
.awards__list { display: grid; grid-template-columns: 1fr 1fr; column-gap: var(--space-12); }
@media (max-width: 760px) { .awards__list { grid-template-columns: 1fr; } }
.band__proof { margin-top: var(--space-4); font-size: var(--text-sm); color: color-mix(in oklab, var(--color-on-ink) 75%, transparent); }

/* Sans-serif labels (formerly monospace) */
.mono, .eyebrow, .ref::before, .exp dt, .timeline__yr, .talks__yr { font-variant-numeric: tabular-nums; }
.mono { letter-spacing: .04em; font-weight: 500; }

/* ---------- Multi-page ---------- */
.page > section:first-child { border-top: 0; }
.page:not(.page--index) > section:first-child { padding-top: clamp(var(--space-12), 6vw, var(--space-20)); }
.nav a[aria-current='page'] { color: var(--color-primary); text-decoration: underline; text-underline-offset: 6px; text-decoration-thickness: 2px; }
.explore { border-top: 1px solid var(--color-divider); }
.explore__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-5); }
.xcard { position: relative; display: flex; flex-direction: column; gap: var(--space-3); padding: var(--space-6); border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); color: var(--color-text); text-decoration: none; transition: border-color .2s, transform .2s, box-shadow .2s; }
.xcard:hover { border-color: var(--color-primary); transform: translateY(-2px); box-shadow: 0 10px 30px -18px rgba(36,26,53,.35); }
.xcard__n { color: var(--color-primary); }
.xcard h3 { font-size: var(--text-lg); font-weight: 600; }
.xcard p { font-size: var(--text-sm); color: var(--color-text-muted); flex: 1; }
.xcard__go { color: var(--color-primary); font-size: var(--text-lg); }
.cta-strip { background: var(--color-ink-band); color: var(--color-on-ink); padding-block: clamp(var(--space-10), 5vw, var(--space-16)); }
.cta-strip__inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-6); flex-wrap: wrap; }
.cta-strip__title { font-size: var(--text-xl); font-weight: 600; letter-spacing: -0.01em; max-width: 28ch; }
.cta-strip .btn { background: #c9b8ec; color: #241a35; }
.cta-strip .btn:hover { background: #ffffff; }
.cta-strip + .footer { border-top: 1px solid rgba(255,255,255,.08); }
@media (max-width: 1000px) { .explore__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .explore__grid { grid-template-columns: 1fr; } }

/* Offices */
.offices { display: grid; grid-template-columns: 1fr; gap: var(--space-8); margin-top: var(--space-10); }
.office__title { font-size: var(--text-sm); font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--color-primary); margin-bottom: var(--space-3); }
.contact__list--office { margin-top: 0; }