:root {
  --brand-dark: #0f0e0d;
  --brand-dark-soft: #171411;
  --brand-paper: #f3f1ec;
  --brand-paper-raised: #fbfaf7;
  --brand-ink: #1d1918;
  --brand-accent: #ff6422;
  --brand-dark-muted: rgba(243, 241, 236, .66);
  --brand-light-muted: rgba(29, 25, 24, .66);
  --brand-dark-line: rgba(243, 241, 236, .15);
  --brand-light-line: rgba(29, 25, 24, .15);
  --brand-frame: 1440px;
  --brand-gutter: clamp(1.25rem, 4vw, 4.5rem);
  --brand-header-height: 4.75rem;
  --brand-serif: "Times New Roman", Georgia, "Songti SC", SimSun, serif;
  --brand-sans: "Microsoft YaHei", "Noto Sans CJK SC", "PingFang SC", Arial, sans-serif;
  --brand-display-en: clamp(4rem, 7vw, 7.5rem);
  --brand-display-zh: clamp(3.5rem, 6vw, 6.5rem);

  /* Map the existing page vocabularies onto one shared brand system. */
  --ml-bg: var(--brand-dark);
  --ml-orange: var(--brand-accent);
  --ml-orange-soft: #ff8a5b;
  --ml-white: var(--brand-paper);
  --ml-muted: var(--brand-dark-muted);
  --ml-line: var(--brand-dark-line);
  --ml-mono: var(--brand-serif);
  --ml-sans: var(--brand-sans);

  --refined-bg: var(--brand-dark);
  --refined-paper: var(--brand-paper);
  --refined-muted: var(--brand-dark-muted);
  --refined-line: var(--brand-dark-line);
  --refined-accent: var(--brand-accent);
  --refined-pad: var(--brand-gutter);

  --work-bg: var(--brand-dark);
  --work-white: var(--brand-paper);
  --work-muted: var(--brand-dark-muted);
  --work-line: var(--brand-dark-line);
  --work-orange: var(--brand-accent);
  --work-mono: var(--brand-serif);
  --work-sans: var(--brand-sans);

  --stats-bg: var(--brand-dark);
  --stats-white: var(--brand-paper);
  --stats-soft: rgba(243, 241, 236, .8);
  --stats-muted: var(--brand-dark-muted);
  --stats-line: var(--brand-dark-line);
  --stats-orange: var(--brand-accent);
  --stats-mono: var(--brand-serif);
  --stats-sans: var(--brand-sans);

  --interaction-bg: var(--brand-dark);
  --interaction-white: var(--brand-paper);
  --interaction-soft: rgba(243, 241, 236, .8);
  --interaction-muted: var(--brand-dark-muted);
  --interaction-line: var(--brand-dark-line);
  --interaction-orange: var(--brand-accent);
  --interaction-frame: var(--brand-frame);
  --interaction-gutter: var(--brand-gutter);
  --interaction-serif: var(--brand-serif);
  --interaction-sans: var(--brand-sans);

  --about-detail-bg: var(--brand-paper);
  --about-detail-ink: var(--brand-ink);
  --about-detail-muted: #6f6966;
  --about-detail-line: var(--brand-light-line);
  --about-detail-orange: var(--brand-accent);
  --about-detail-serif: var(--brand-serif);
  --about-detail-sans: var(--brand-sans);
  --about-detail-frame: var(--brand-frame);
  --about-detail-gutter: var(--brand-gutter);

  --site-accent: var(--brand-accent);
  --site-ink: var(--brand-dark);
  --site-paper: var(--brand-paper);
  --site-line: var(--brand-dark-line);
}

html {
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--brand-sans);
}

::selection {
  background: var(--brand-accent);
  color: var(--brand-dark);
}

/* Shared identity and navigation scale. */
.ml-mark,
.refined-brand,
.recognitions-brand,
.work-nav-brand,
.stats-brand,
.interaction-brand,
.work-logo,
.about-detail-brand {
  font-family: var(--brand-serif);
  font-size: clamp(1.45rem, 2vw, 1.9rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.075em;
}

.ml-nav,
.page-nav,
.recognitions-nav,
.work-site-nav,
.stats-back,
.interaction-back,
.work-menu,
.about-detail-header {
  font-family: var(--brand-sans);
  font-size: .8rem;
  letter-spacing: .015em;
}

.ml-nav,
.page-nav,
.recognitions-nav,
.work-site-nav {
  gap: clamp(1.25rem, 2.4vw, 2.5rem);
}

.ml-nav a,
.page-nav a,
.recognitions-nav a,
.work-site-nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.ml-nav a.is-active,
.page-nav a.is-active,
.recognitions-nav a.is-active,
.work-site-nav a.is-active {
  color: var(--brand-accent);
}

.ml-header,
.refined-page .page-header,
.refined-page .recognitions-header,
.work-page .work-header {
  top: 0;
  right: auto;
  left: 50%;
  width: min(100%, var(--brand-frame));
  min-height: var(--brand-header-height);
  margin: 0;
  padding: 0 var(--brand-gutter);
  align-items: center;
  transform: translateX(-50%);
}

.work-page .work-header {
  position: fixed;
  z-index: 30;
  display: flex;
  justify-content: space-between;
  color: var(--brand-paper);
}

.work-nav-brand {
  color: var(--brand-paper);
  text-decoration: none;
}

.work-nav-brand sup {
  margin-left: .15rem;
  font-size: .42em;
  font-weight: 400;
  letter-spacing: 0;
  vertical-align: top;
}

.work-page .background-brand {
  display: none;
}

/* Two deliberate surfaces: dark for identity/work, warm paper for growth/personality. */
.refined-page.about-editorial-page {
  --about-bg: var(--brand-paper);
  --about-paper: var(--brand-paper-raised);
  --about-ink: var(--brand-ink);
  --about-muted: var(--brand-light-muted);
}

.refined-page.experience-timeline-page {
  --experience-bg: var(--brand-paper);
  --experience-ink: var(--brand-ink);
  --experience-muted: rgba(29, 25, 24, .45);
  --experience-line: rgba(29, 25, 24, .16);
}

.refined-page.about-editorial-page .recognitions-header {
  background: linear-gradient(180deg, rgba(243, 241, 236, .98), rgba(243, 241, 236, .86) 58%, rgba(243, 241, 236, 0));
}

.refined-page.experience-timeline-page .page-header {
  background: linear-gradient(180deg, rgba(243, 241, 236, .98), rgba(243, 241, 236, .86) 58%, rgba(243, 241, 236, 0));
}

/* A single display voice for English; Chinese headings retain a clean sans voice. */
.ml-name-wrap h1,
.experience-hero h1,
.about-hero h1,
.contact-intro h1,
.about-statement p,
.portfolio-word,
.project-card h2,
.interaction-hero h1,
.interaction-section-heading h2 {
  font-family: var(--brand-serif);
  font-weight: 400;
}

.experience-hero h1,
.about-hero h1,
.contact-intro h1 {
  font-size: var(--brand-display-en);
  line-height: .92;
  letter-spacing: -.06em;
}

.experience-eyebrow,
.about-eyebrow,
.contact-eyebrow,
.experience-text,
.about-intro,
.about-story-caption,
.contact-details,
.contact-status {
  font-family: var(--brand-sans);
}

.experience-text h2,
.about-story-caption h2,
.stats-hero h1,
.visual-project-page .detail-copy h1 {
  font-family: var(--brand-sans);
}

.experience-copy time,
.experience-text span,
.about-story-caption span,
.eyebrow,
.hero-period,
.interaction-eyebrow,
.interaction-period,
.interaction-series,
.work-kicker,
.detail-series,
.detail-tags,
.section-kicker,
.interaction-section-label,
.card-eyebrow {
  font-family: var(--brand-serif);
}

.about-main,
.experience-timeline {
  width: min(calc(100% - (2 * var(--brand-gutter))), var(--brand-frame));
}

.about-main {
  padding-right: 0;
  padding-left: 0;
}

.experience-hero,
.about-hero {
  min-height: clamp(30rem, 66vh, 44rem);
}

/* Orange is an accent, not a second headline color. */
.stats-hero h1 em {
  color: var(--brand-accent);
}

.interaction-hero h1 em {
  color: var(--brand-accent);
  font-style: normal;
}

.interaction-hero h1 span,
.interaction-hero h1 em {
  display: inline;
}

.interaction-hero h1 > span {
  display: block;
}

.interaction-hero h1 > span:last-child {
  color: var(--interaction-white);
}

.main-site-home .black-field {
  left: 6vw;
  clip-path: polygon(7% 0, 100% 0, 100% 100%, 0 100%, 0 8%);
}

/* Bring the detail headers into the same frame and navigation rhythm. */
.stats-header {
  min-height: var(--brand-header-height);
  padding: 0 var(--brand-gutter);
}

.interaction-header,
.visual-project-page .work-header {
  width: min(calc(100% - (2 * var(--brand-gutter))), var(--brand-frame));
  min-height: var(--brand-header-height);
}

.stats-header,
.interaction-header,
.visual-project-page .work-header {
  border-bottom-color: var(--brand-dark-line);
  background: rgba(15, 14, 13, .86);
}

.stats-main,
.interaction-main {
  max-width: var(--brand-frame);
  padding-right: var(--brand-gutter);
  padding-left: var(--brand-gutter);
}

.stats-hero h1 {
  font-size: clamp(4.5rem, 8vw, 8.5rem);
  font-weight: 500;
  line-height: .88;
  letter-spacing: -.065em;
}

.visual-project-page .detail-copy h1 {
  font-size: var(--brand-display-zh);
  font-weight: 500;
  line-height: .96;
  letter-spacing: -.065em;
}

.interaction-hero h1 {
  font-size: var(--brand-display-en);
  line-height: .86;
  letter-spacing: -.07em;
}

.intro-copy,
.interaction-description,
.visual-project-page [data-detail-description],
.stat-copy span,
.card-copy,
.visual-project-page .accordion-panel p {
  color: var(--brand-dark-muted);
}

.about-detail-copy h1,
.about-detail-story-copy h2,
.about-detail-note-grid h2 {
  font-family: var(--brand-serif);
  font-weight: 400;
}

.about-detail-copy h1 em {
  color: inherit;
}

.about-detail-copy,
.about-detail-intro,
.about-detail-story-copy > p:last-child,
.about-detail-note-grid p {
  font-family: var(--brand-sans);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--brand-accent);
  outline-offset: 4px;
}

@media (max-width: 820px) {
  .experience-hero h1,
  .about-hero h1,
  .contact-intro h1 {
    font-size: clamp(3.2rem, 13vw, 5.25rem);
  }

  .stats-hero h1 {
    font-size: clamp(3.6rem, 14vw, 6.25rem);
  }

  .visual-project-page .detail-copy h1 {
    font-size: clamp(3.25rem, 14vw, 5.25rem);
  }

  .interaction-hero h1 {
    font-size: clamp(3.6rem, 16vw, 5.5rem);
  }
}

@media (max-width: 760px) {
  .ml-header,
  .refined-page .page-header,
  .refined-page .recognitions-header,
  .work-page .work-header {
    right: 0;
    left: 0;
    width: 100%;
    min-height: var(--brand-header-height);
    padding: .9rem 1.25rem;
    transform: none;
  }

  .main-site-home .black-field {
    left: 0;
    clip-path: none;
  }

  .about-main,
  .experience-timeline {
    width: calc(100% - 2.5rem);
  }

  .site-menu-open .work-nav-brand,
  .site-menu-open .refined-brand,
  .site-menu-open .recognitions-brand,
  .site-menu-open .ml-mark {
    color: var(--brand-paper) !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
  }
}

/* Shared project-detail hero rhythm: audit, finance, and Kingdee. */
.stats-title-wrap,
.interaction-hero-copy,
.visual-project-page .detail-copy {
  display: flex;
  width: 100%;
  justify-content: center;
}

.stats-hero h1,
.interaction-hero h1,
.visual-project-page .detail-copy h1 {
  max-width: none;
  margin: 0;
  font-family: var(--brand-sans);
  font-size: var(--brand-display-zh);
  font-weight: 500;
  line-height: .96;
  letter-spacing: -.065em;
  text-align: center;
}

.stats-hero-layout,
.interaction-hero-layout,
.visual-project-page .detail-hero-layout {
  padding-top: clamp(5rem, 9vw, 8rem);
  padding-bottom: clamp(4rem, 7vw, 6rem);
}

.stats-hero-copy,
.interaction-hero-note,
.visual-project-page .detail-note-copy {
  width: 100%;
  align-items: center;
  gap: clamp(2.25rem, 4vw, 3.25rem);
  margin-top: clamp(2.5rem, 5vw, 4rem);
}

.stats-hero-copy .intro-copy,
.interaction-description,
.visual-project-page [data-detail-description] {
  max-width: 40rem;
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.stats-project-meta,
.interaction-project-meta,
.visual-project-page .detail-tags {
  display: grid;
  width: min(100%, 38rem);
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.stats-project-meta > span,
.interaction-project-meta > span,
.visual-project-page .detail-tags > span {
  display: grid;
  justify-items: center;
  gap: .65rem;
  padding: 0 clamp(1.5rem, 4vw, 3.5rem);
}

.stats-project-meta > span + span,
.interaction-project-meta > span + span,
.visual-project-page .detail-tags > span + span {
  border-left: 1px solid var(--brand-dark-line);
}

@media (max-width: 560px) {
  .stats-hero h1,
  .interaction-hero h1,
  .visual-project-page .detail-copy h1 {
    font-size: clamp(3.5rem, 16vw, 5rem);
  }

  .stats-hero-layout,
  .interaction-hero-layout,
  .visual-project-page .detail-hero-layout {
    padding-top: 4.5rem;
    padding-bottom: 4rem;
  }

  .stats-project-meta > span,
  .interaction-project-meta > span,
  .visual-project-page .detail-tags > span {
    padding: 0 1rem;
  }
}