:root,
[data-theme="light"] {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.92rem, 0.84rem + 0.22vw, 1rem);
  --text-base: clamp(1rem, 0.96rem + 0.18vw, 1.08rem);
  --text-lg: clamp(1.15rem, 1.02rem + 0.55vw, 1.4rem);
  --text-xl: clamp(1.55rem, 1.22rem + 1.1vw, 2.2rem);
  --text-2xl: clamp(2.45rem, 1.7rem + 2.5vw, 4.4rem);
  --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;
  --color-bg: #f7f5f0;
  --color-surface: #fbfaf7;
  --color-surface-2: #f1eee7;
  --color-border: rgba(33,31,25,.11);
  --color-divider: rgba(33,31,25,.08);
  --color-text: #211f19;
  --color-text-muted: #666159;
  --color-text-faint: #8c867d;
  --color-primary: #0d5d63;
  --color-primary-soft: rgba(13,93,99,.12);
  --color-text-inverse: #f8f7f4;
  --shadow-sm: 0 1px 2px rgba(20,17,12,.05), 0 10px 24px rgba(20,17,12,.03);
  --radius-sm: .55rem;
  --radius-md: .95rem;
  --radius-lg: 1.35rem;
  --radius-xl: 1.8rem;
  --radius-full: 999px;
  --font-body: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  --font-display: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  --content: 1240px;
  --toc-width: 240px;
  --header-height: 78px;
}
[data-theme="dark"] {
  --color-bg: #161513;
  --color-surface: #1d1c1a;
  --color-surface-2: #24211f;
  --color-border: rgba(232,227,218,.12);
  --color-divider: rgba(232,227,218,.08);
  --color-text: #e8e3da;
  --color-text-muted: #b9b1a6;
  --color-text-faint: #8e877d;
  --color-primary: #79b7c0;
  --color-primary-soft: rgba(121,183,192,.12);
  --color-text-inverse: #11110f;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.25), 0 14px 30px rgba(0,0,0,.16);
}
*,*::before,*::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 5.5rem; }
body { margin: 0; min-height: 100dvh; background: var(--color-bg); color: var(--color-text); font-family: var(--font-body); font-size: var(--text-base); line-height: 1.65; }
a { text-decoration: none; color: inherit; }
img,svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; }
h1,h2,h3 { margin: 0; font-family: var(--font-display); line-height: 1.03; letter-spacing: -.04em; text-wrap: balance; }
h1 { font-size: var(--text-2xl); max-width: 10ch; }
h2 { font-size: var(--text-xl); }
h3 { font-size: clamp(1.2rem, 1.02rem + .35vw, 1.42rem); }
.container { width: min(calc(100% - 2rem), var(--content)); margin-inline: auto; }
.site-header { position: sticky; top: 0; z-index: 60; background: color-mix(in srgb, var(--color-bg) 88%, transparent); backdrop-filter: blur(16px); border-bottom: 1px solid var(--color-divider); transition: transform .9s cubic-bezier(.2,.8,.2,1), opacity .9s cubic-bezier(.2,.8,.2,1), box-shadow .9s ease; }
.site-header.header-hidden { transform: translateY(-112%); opacity: .9; box-shadow: none; }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); min-height: var(--header-height); position: relative; }
.brand { display: inline-flex; align-items: center; gap: var(--space-3); }
.brand-mark { width: 42px; height: 42px; border-radius: 14px; background: var(--color-text); color: var(--color-bg); display: grid; place-items: center; box-shadow: var(--shadow-sm); }
.brand-copy small { display: block; font-size: var(--text-xs); text-transform: uppercase; letter-spacing: .08em; color: var(--color-text-muted); font-weight: 700; }
.brand-copy strong { display: block; font-size: var(--text-sm); font-weight: 700; }
.desktop-nav { display: none; gap: var(--space-5); align-items: center; }
.desktop-nav a,.menu-panel a,.toc-group-title,.toc-sublist a { position: relative; }
.desktop-nav a { font-size: var(--text-sm); color: var(--color-text-muted); padding: .25rem 0; }
.desktop-nav a::after,.menu-panel a::after,.toc-group-title::after,.toc-sublist a::after { content: ""; position: absolute; left: 0; bottom: -.18rem; width: 100%; height: 2px; background: var(--color-primary); transform: scaleX(0); transform-origin: left; transition: .18s ease; }
.desktop-nav a.active,.menu-panel a.active { color: var(--color-primary); font-weight: 700; }
.desktop-nav a.active::after,.menu-panel a.active::after,.toc-group-title.active::after,.toc-sublist a.active::after { transform: scaleX(1); }
.header-actions { display: flex; align-items: center; gap: var(--space-3); }
.theme-toggle,.menu-toggle { width: 44px; height: 44px; border: 1px solid var(--color-border); border-radius: var(--radius-full); background: var(--color-surface); display: grid; place-items: center; }
.menu-panel { display: none; position: absolute; left: 1rem; right: 1rem; top: calc(100% + .5rem); padding: var(--space-4); background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.menu-panel.open { display: grid; gap: var(--space-2); }
.menu-panel a { padding: .85rem 0; border-radius: 0; background: transparent; font-weight: 600; color: var(--color-text-muted); }
.page-shell { display: block; }
.toc { display: none; }
.main-column { min-width: 0; }
.hero { padding: clamp(var(--space-12), 11vw, var(--space-24)) 0 var(--space-12); }
.hero-wrap { display: grid; gap: var(--space-8); align-items: end; }

.hero-wrap--solo {
  grid-template-columns: minmax(0, 1fr);
}

@media (min-width: 820px) {
  .hero-wrap--solo {
    grid-template-columns: minmax(0, 1fr);
  }
}

.hero-wrap--solo > div:first-child {
  width: 100%;
  max-width: none;
}

.hero-wrap--solo h1 {
  max-width: none;
}

.hero-wrap--solo .lead {
  max-width: 72ch;
}

@media (min-width: 1120px) {
  .hero-wrap--solo {
    margin-right: calc(-1 * (var(--toc-width) + clamp(2rem, 4vw, 4rem)));
  }
}

.eyebrow { display: inline-flex; align-items: center; gap: var(--space-2); padding: .45rem .8rem; border-radius: var(--radius-full); background: var(--color-primary-soft); color: var(--color-primary); font-size: var(--text-xs); font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.lead { max-width: 58ch; margin: var(--space-5) 0 0; color: var(--color-text-muted); }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-6); }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: .9rem 1.15rem; border-radius: var(--radius-full); font-size: var(--text-sm); font-weight: 700; border: 1px solid transparent; }
.btn-primary { background: var(--color-text); color: var(--color-bg); }
.btn-secondary { display: inline-block; margin-bottom: 2rem; background: var(--color-surface); border-color: var(--color-border); }
.hero-side { padding: var(--space-6); background: linear-gradient(180deg, var(--color-surface), var(--color-surface-2)); border: 1px solid var(--color-border); border-radius: var(--radius-xl); box-shadow: var(--shadow-sm); }
.hero-side p { margin: var(--space-3) 0 0; color: var(--color-text-muted); }
.hero-stats { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: var(--space-3); margin-top: var(--space-5); }
.hero-stat { padding: var(--space-4); background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); }
.hero-stat strong { display: block; font-size: clamp(1.45rem, 1.1rem + .8vw, 1.95rem); font-family: var(--font-display); }
.hero-stat span { display: block; margin-top: var(--space-1); font-size: var(--text-xs); line-height: 1.5; color: var(--color-text-muted); }
.content-section { padding: var(--space-12) 0; border-top: 1px solid var(--color-divider); }
.section-block { display: grid; gap: var(--space-5); }
.section-block p { margin: 0; color: var(--color-text-muted); max-width: 60ch; }
.kicker { font-size: var(--text-xs); font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--color-primary); }
.simple-list { display: grid; gap: var(--space-3); margin-top: var(--space-2); }
.simple-item { padding: var(--space-5) 0; border-top: 1px solid var(--color-divider); }
.simple-item:first-child { border-top: none; padding-top: 0; }
.simple-item p { margin: var(--space-2) 0 0; color: var(--color-text-muted); max-width: 62ch; }
.focus-columns { display: grid; gap: var(--space-4); margin-top: var(--space-4); }
.focus-card,.project-card,.about-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.focus-card {padding: var(--space-5);  display: flex;  flex-direction: column;}
.focus-card h3 {  min-height: 3.2em;}
.focus-card > p {  margin-top: var(--space-4);  min-height: 7.5em;  color: var(--color-text-muted);}
.focus-card .focus-list {  margin-top: var(--space-4);}
.focus-list,.about-list,.project-points { margin: var(--space-3) 0 0; padding: 0; list-style: none; }
.focus-list li,.about-list li,.project-points li { position: relative; padding-left: 1.1rem; margin-top: var(--space-2); color: var(--color-text-muted); }
.focus-list li::before,.about-list li::before,.project-points li::before { content: ""; position: absolute; left: 0; top: .72em; width: 6px; height: 6px; border-radius: 50%; background: var(--color-primary); }
.projects-list { display: grid; gap: var(--space-4); margin-top: var(--space-4); }
.project-card { padding: var(--space-5); scroll-margin-top: 6.5rem; }
.project-card p { margin: var(--space-3) 0 0; color: var(--color-text-muted); }
.project-top { display: flex; justify-content: space-between; gap: var(--space-3); align-items: flex-start; }
.tag { display: inline-flex; padding: .42rem .72rem; border-radius: var(--radius-full); background: var(--color-surface-2); border: 1px solid var(--color-border); font-size: var(--text-xs); color: var(--color-text-muted); }
.stack { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-4); }
.about-card { padding: var(--space-6); margin-top: var(--space-4); }
.about-card p { margin: var(--space-3) 0 0; color: var(--color-text-muted); max-width: 62ch; }

.contact-box { margin-top: var(--space-4); padding: var(--space-6); background: var(--color-surface); color: var(--color-text); border: 1px solid var(--color-border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); position: relative; overflow: hidden; }
.contact-box::after { display: none; }
.contact-box p { margin: var(--space-3) 0 0; max-width: 62ch; color: var(--color-text-muted); }
.contact-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-6); }
.contact-actions .btn-secondary { background: var(--color-surface); border-color: var(--color-border); color: var(--color-text); }

.site-footer { padding: var(--space-8) 0 var(--space-10); border-top: 1px solid var(--color-divider); }
.footer-inner { display: flex; flex-direction: column; gap: var(--space-3); font-size: var(--text-sm); color: var(--color-text-muted); }
.footer-links { display: flex; flex-wrap: wrap; gap: var(--space-4); }
.toc-nav { position: sticky; top: calc(var(--header-height) + 1.5rem); padding-top: var(--space-6); }
.toc-title { font-size: var(--text-xs); font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--color-text-faint); margin-bottom: var(--space-4); }
.toc-groups { display: grid; gap: var(--space-4); }
.toc-group { padding-left: var(--space-4); border-left: 1px solid var(--color-divider); }
.toc-group.collapsed .toc-sublist { display: none; }
.toc-group:not(.collapsed) .toc-group-title { color: var(--color-primary); }
.toc-group:not(.collapsed) .toc-group-title::after { transform: scaleX(1); }
.toc-group-title { display: inline-block; font-size: var(--text-sm); font-weight: 600; color: var(--color-text-muted); padding-bottom: .1rem; }
.toc-group-title.active { color: var(--color-primary); font-weight: 700; }
.toc-sublist { list-style: none; margin: var(--space-3) 0 0; padding: 0; display: grid; gap: var(--space-2); }
.toc-sublist a { display: inline-block; font-size: var(--text-xs); color: var(--color-text-faint); padding-bottom: .08rem; }
.toc-sublist a.active { color: var(--color-primary); font-weight: 700; }
[data-theme="light"] .btn-primary { background: var(--color-text); color: var(--color-bg); }
[data-theme="dark"] .btn-primary { background: var(--color-text); color: var(--color-bg); }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; }
@media (min-width: 820px) {
  .desktop-nav { display: flex; }
  .menu-toggle,.menu-panel { display: none !important; }
  .hero-wrap { grid-template-columns: minmax(0,1.12fr) minmax(320px,.88fr); }
  .focus-columns { grid-template-columns: repeat(3,minmax(0,1fr)); }
  .footer-inner { flex-direction: row; justify-content: space-between; align-items: center; }
}
@media (min-width: 1120px) {
  .page-shell { display: grid; grid-template-columns: var(--toc-width) minmax(0,1fr); gap: clamp(2rem,4vw,4rem); }
  .toc { display: block; }
}
@media (max-width: 819px) {
  .project-top { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,*::before,*::after { transition: none !important; animation: none !important; }
}

/*
#back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20%;
  z-index: 1000;
}
*/

.show-email {
    background: none;
    border: none;
    padding: 0;
    margin: 0;
    font: inherit; 
    color: inherit;
    cursor: pointer;
}