:root {
  --bg: #fbf6ed;
  --bg-alt: #f3eadb;
  --surface: #fffdf8;
  --surface-strong: #ffffff;
  --text: #15202b;
  --muted: #657080;
  --line: #e2d7c7;
  --line-strong: #c9bba6;
  --teal: #11736b;
  --teal-2: #0f8f87;
  --orange: #c66a35;
  --amber: #b36b00;
  --blue: #315ea8;
  --green: #247450;
  --purple: #7057a8;
  --danger: #a6493e;
  --shadow: 0 24px 60px rgba(36, 29, 18, 0.12);
  --shadow-soft: 0 12px 28px rgba(36, 29, 18, 0.08);
  --radius: 24px;
  --radius-sm: 15px;
  --max: 1120px;
}
* { box-sizing: border-box; }
html {
  overflow-x: clip;
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: radial-gradient(circle at top left, rgba(17,115,107,.10), transparent 34rem), var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", Inter, system-ui, sans-serif;
  line-height: 1.65;
  overflow-x: clip;
  word-break: keep-all;
}
@supports not (overflow: clip) {
  html,
  body { overflow-x: hidden; }
}
a { color: inherit; }
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace; }
.skip-link { position: fixed; top: 10px; left: 10px; z-index: 1000; transform: translateY(-160%); background: var(--text); color: #fff; padding: .7rem 1rem; border-radius: 999px; }
.skip-link:focus { transform: translateY(0); }
.scroll-progress { position: fixed; inset: 0 0 auto 0; height: 3px; z-index: 1001; }
.scroll-progress span { display: block; height: 100%; width: 0%; background: linear-gradient(90deg, var(--teal), var(--orange)); }
.site-header { position: sticky; top: 0; z-index: 900; backdrop-filter: blur(14px); background: rgba(251,246,237,.82); border-bottom: 1px solid rgba(226,215,199,.74); }
.nav-shell { max-width: var(--max); margin: 0 auto; padding: .72rem 1.2rem; display: flex; align-items: center; gap: 1rem; }
.brand { display: inline-flex; align-items: center; gap: .62rem; text-decoration: none; font-weight: 900; letter-spacing: -.02em; }
.brand-mark { display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 13px; background: var(--text); color: #fffaf1; font-size: .82rem; }
.brand-text { font-size: 1.02rem; }
.site-nav { margin-left: auto; display: flex; align-items: center; gap: .15rem; }
.site-nav a, .lang-switch a { text-decoration: none; color: var(--muted); font-size: .92rem; font-weight: 750; padding: .55rem .72rem; border-radius: 999px; }
.site-nav a:hover, .site-nav a.active, .lang-switch a:hover, .lang-switch a.active { color: var(--text); background: rgba(17,115,107,.09); }
.lang-switch { display: inline-flex; align-items: center; gap: .1rem; color: var(--line-strong); }
.nav-toggle { display: none; margin-left: auto; border: 1px solid var(--line); background: var(--surface); color: var(--text); border-radius: 999px; padding: .5rem .75rem; font-weight: 800; }
.contact-hero { max-width: var(--max); margin: 0 auto; padding: clamp(4rem, 8vw, 7.5rem) 1.2rem clamp(3rem, 6vw, 5rem); display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .82fr); gap: clamp(2rem, 6vw, 4.5rem); align-items: center; }
.hero-home { max-width: var(--max); margin: 0 auto; padding: clamp(4rem, 8vw, 7.5rem) 1.2rem clamp(3rem, 6vw, 5rem); display: flex; flex-direction: column; gap: 2.5rem; }
.hero-header { width: 100%; }
.hero-header h1 { font-size: clamp(2.4rem, 5.5vw, 4.8rem); line-height: 1.1; margin-bottom: 0; }
.hero-body { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .82fr); gap: clamp(2rem, 6vw, 4.5rem); align-items: center; }
.page-hero { max-width: var(--max); margin: 0 auto; padding: clamp(4rem, 8vw, 7rem) 1.2rem 2.5rem; }
.page-hero-content { max-width: 850px; }
.eyebrow { margin: 0 0 .75rem; color: var(--teal); font-size: .78rem; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(2.6rem, 6vw, 5.4rem); line-height: .98; letter-spacing: -.06em; margin-bottom: 1.1rem; }
h2 { font-size: clamp(2rem, 4.2vw, 3.4rem); line-height: 1.05; letter-spacing: -.05em; margin-bottom: .85rem; }
h3 { font-size: 1.34rem; line-height: 1.18; letter-spacing: -.03em; margin-bottom: .5rem; }
.hero-lead { font-size: clamp(1.12rem, 2vw, 1.36rem); line-height: 1.55; color: #33404d; }
p { color: var(--muted); }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; border-radius: 999px; padding: .72rem 1.05rem; font-weight: 850; text-decoration: none; border: 1px solid transparent; cursor: pointer; font: inherit; }
.button-primary { background: var(--teal); color: #fff; box-shadow: 0 12px 22px rgba(17,115,107,.18); }
.button-primary:hover { background: #0d625b; }
.button-secondary { background: rgba(255,253,248,.88); color: var(--text); border-color: var(--line); }
.button-secondary:hover { border-color: var(--line-strong); box-shadow: var(--shadow-soft); }
.section { max-width: var(--max); margin: 0 auto; padding: clamp(2.2rem, 6vw, 4.5rem) 1.2rem; }
.alt-section { max-width: none; background: linear-gradient(180deg, rgba(255,253,248,.32), rgba(243,234,219,.62)); border-block: 1px solid rgba(226,215,199,.55); }
.alt-section > .section-head, .alt-section > .mini-tech-grid { max-width: var(--max); margin-inline: auto; }
.section-head { max-width: 780px; margin-bottom: 1.5rem; }
.pillar-grid, .card-grid, .mini-tech-grid { display: grid; gap: 1rem; }
.pillar-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card-grid.tech-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card-grid.tech-grid.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.mini-tech-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.pillar-card, .tech-card, .mini-tech, .contact-card { background: rgba(255,253,248,.90); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-soft); }
.pillar-card { padding: 1.25rem; }
.pillar-card span { display: inline-block; color: var(--teal); font-size: .78rem; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; margin-bottom: .7rem; }
.pillar-card p, .mini-tech p, .tech-card p { margin-bottom: .85rem; }
.text-link, .text-button { color: var(--teal); font-weight: 900; text-decoration: none; }
.text-button { border: 0; background: transparent; padding: 0; cursor: pointer; font: inherit; }
.text-link:hover, .text-button:hover { color: var(--orange); }
.tech-card { padding: 1.05rem; display: flex; flex-direction: column; min-height: 100%; }
.tech-card-top { min-height: 28px; margin-bottom: .5rem; }
.tech-subtitle { color: var(--teal); font-weight: 820; margin-top: -.2rem; }
.tech-card .image-placeholder.compact { margin-top: auto !important; }
.card-actions { padding-top: .7rem; }
.tech-card .card-actions { margin-top: 0; }
.pillar-card .card-actions, .contact-card .card-actions { margin-top: auto; }
.status-chip { display: inline-flex; align-items: center; gap: .35rem; padding: .27rem .56rem; border-radius: 999px; border: 1px solid rgba(17,115,107,.18); background: rgba(17,115,107,.08); color: var(--teal); font-size: .76rem; font-weight: 900; }
.status-operating { color: var(--green); border-color: rgba(36,116,80,.22); background: rgba(36,116,80,.09); }
.status-research { color: var(--purple); border-color: rgba(112,87,168,.22); background: rgba(112,87,168,.09); }
.status-prelaunch, .status-direction { color: var(--amber); border-color: rgba(179,107,0,.22); background: rgba(179,107,0,.09); }
.status-patent { color: var(--blue); border-color: rgba(49,94,168,.22); background: rgba(49,94,168,.09); }
.image-placeholder { position: relative; overflow: hidden; min-height: 280px; display: grid; place-items: end stretch; background: linear-gradient(135deg, rgba(17,115,107,.11), rgba(209,109,53,.11)), #fffaf1; border: 1px dashed var(--line-strong); border-radius: var(--radius); margin: 0; }
.image-placeholder.compact { min-height: 180px; border-radius: var(--radius-sm); margin-top: .75rem; }
.placeholder-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(21,32,43,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(21,32,43,.06) 1px, transparent 1px); background-size: 22px 22px; mask-image: linear-gradient(to bottom, rgba(0,0,0,.85), rgba(0,0,0,.16)); }
.image-placeholder figcaption { position: relative; padding: 1rem; width: 100%; background: linear-gradient(180deg, transparent, rgba(255,250,241,.96) 22%); }
.image-placeholder strong { display: block; color: var(--teal); font-size: .76rem; letter-spacing: .09em; text-transform: uppercase; margin-bottom: .25rem; }
.image-placeholder span { display: block; color: var(--muted); font-size: .89rem; line-height: 1.45; }
.hero-image-figure { overflow: hidden; margin: 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-soft); }
.hero-image-figure img { display: block; width: 100%; height: auto; aspect-ratio: 1448 / 1086; object-fit: contain; }
.card-asset-figure { overflow: hidden; margin: .75rem 0 0; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface); }
.card-asset-figure img { display: block; width: 100%; height: auto; aspect-ratio: 1672 / 941; object-fit: contain; }
.image-modal-trigger {
  appearance: none;
  display: block;
  width: 100%;
  border: 0;
  padding: 0;
  background: transparent;
  cursor: zoom-in;
}
.image-modal-trigger img { transition: transform .16s ease, filter .16s ease; }
.image-modal-trigger:hover img { transform: scale(1.01); filter: saturate(1.03); }
.image-modal-trigger:focus-visible { outline: 3px solid rgba(17,115,107,.18); outline-offset: -3px; }
.mini-tech { padding: 1rem; display: flex; flex-direction: column; }
.mini-tech .image-placeholder.compact { margin-top: auto !important; }
.mini-tech .card-asset-figure { margin-top: auto !important; }
.mini-tech-head { display: flex; justify-content: space-between; align-items: start; gap: .8rem; margin-bottom: .45rem; }
.mini-tech-head h3 { margin-bottom: 0; }
.mini-tech-head span { flex: 0 0 auto; border: 1px solid var(--line); border-radius: 999px; padding: .2rem .5rem; color: var(--muted); font-size: .74rem; font-weight: 850; }
.split-section { display: grid; grid-template-columns: .85fr 1.15fr; gap: 1.2rem; align-items: center; }
.code-window { background: #17202a; color: #f6efe4; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.code-window-bar { display: flex; gap: .35rem; padding: .8rem 1rem; background: #111820; }
.code-window-bar span { width: 11px; height: 11px; border-radius: 999px; background: #f0c843; }
.code-window-bar span:first-child { background:#e05a47; }
.code-window-bar span:last-child { background:#4eaa64; }
.code-window pre { margin: 0; padding: 1.2rem; overflow-x: auto; font-size: .92rem; white-space: pre-wrap; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255,253,248,.88); box-shadow: var(--shadow-soft); }
table { width: 100%; border-collapse: collapse; min-width: 760px; }
th, td { text-align: left; padding: .9rem 1rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--teal); font-size: .82rem; text-transform: uppercase; letter-spacing: .08em; background: rgba(17,115,107,.06); }
tr:last-child td { border-bottom: 0; }
.color-dot { display: inline-block; width: .75rem; height: .75rem; border-radius: 999px; margin-right: .45rem; vertical-align: middle; box-shadow: 0 0 0 2px rgba(0,0,0,.06); }
.color-blue{background:#3487ff}.color-red{background:#e34b4b}.color-orange{background:#f28c34}.color-grey{background:#8492a6}.color-teal{background:#0f8f87}.color-green{background:#4eaa64}.color-yellow{background:#f0c843}.color-white{background:#fff}.color-black{background:#111827}
.cta-band { text-align: center; }
.cta-band > div { max-width: 760px; margin: 0 auto; padding: 2.2rem; border-radius: calc(var(--radius) + 8px); background: linear-gradient(135deg, rgba(17,115,107,.12), rgba(209,109,53,.12)); border: 1px solid var(--line); }
.site-footer { border-top: 1px solid rgba(226,215,199,.8); padding: 1.25rem 1.2rem; background: rgba(255,253,248,.58); }
.footer-minimal { max-width: var(--max); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; color: var(--muted); font-size: .9rem; }
.footer-brand-stack { display: grid; gap: .18rem; }
.footer-brand { color: var(--text); text-decoration: none; font-weight: 900; }
.footer-founder {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--teal);
  cursor: pointer;
  font: inherit;
  font-weight: 900;
  justify-self: start;
  padding: 0;
}
.footer-founder:hover,
.footer-founder:focus-visible { color: var(--orange); outline: none; text-decoration: underline; text-underline-offset: .22em; }
.founder-dialog {
  width: min(620px, calc(100vw - 2rem));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0;
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow);
}
.founder-dialog::backdrop { background: rgba(21,32,43,.42); backdrop-filter: blur(6px); }
.founder-dialog-shell { padding: clamp(1.15rem, 3vw, 1.65rem); }
.founder-dialog-head { display: flex; align-items: start; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.founder-dialog-head h2 { margin: 0; font-size: clamp(1.7rem, 4vw, 2.35rem); }
.founder-dialog-close {
  appearance: none;
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255,253,248,.86);
  color: var(--text);
  cursor: pointer;
  font-size: 1.35rem;
  line-height: 1;
}
.founder-dialog-close:hover,
.founder-dialog-close:focus-visible { border-color: var(--line-strong); background: #fffaf1; outline: 3px solid rgba(17,115,107,.14); }
.founder-dialog-body { display: grid; gap: .9rem; }
.founder-dialog-body p { margin: 0; }
.image-modal-dialog {
  width: min(1180px, calc(100vw - 2rem));
  max-height: calc(100dvh - 2rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0;
  background: var(--surface-strong);
  color: var(--text);
  box-shadow: var(--shadow);
}
.image-modal-dialog::backdrop { background: rgba(21,32,43,.58); backdrop-filter: blur(8px); }
.image-modal-shell { display: grid; grid-template-rows: auto minmax(0, 1fr); max-height: calc(100dvh - 2rem); }
.image-modal-head {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1rem;
  padding: .7rem;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}
.image-modal-close {
  appearance: none;
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255,253,248,.86);
  color: var(--text);
  cursor: pointer;
  font-size: 1.35rem;
  line-height: 1;
}
.image-modal-close:hover,
.image-modal-close:focus-visible { border-color: var(--line-strong); background: var(--surface-strong); outline: 3px solid rgba(17,115,107,.14); }
.image-modal-frame {
  min-width: 0;
  min-height: 0;
  overflow: auto;
  padding: clamp(.75rem, 2vw, 1rem);
  background: var(--surface-strong);
}
.image-modal-frame img {
  display: block;
  width: 100%;
  height: auto;
  max-height: calc(100dvh - 7rem);
  object-fit: contain;
}
.founder-credential-list {
  display: grid;
  gap: .55rem;
  margin: .1rem 0 0;
  padding: 0;
  list-style: none;
}
.founder-credential-list li {
  padding-left: .9rem;
  border-left: 3px solid rgba(17,115,107,.24);
  color: var(--muted);
}
.not-found { max-width: 760px; margin: 0 auto; min-height: 100vh; display: grid; place-items: center; padding: 1rem; }


.reveal { opacity: 0; transform: translateY(16px); transition: opacity .48s ease, transform .48s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
.status-development { color: var(--blue); border-color: rgba(49,94,168,.22); background: rgba(49,94,168,.09); }
.status-improving,
.status-operating_dev { color: #075c61; border-color: rgba(7,92,97,.22); background: rgba(7,92,97,.09); }
.status-platform { color: #475569; border-color: rgba(71,85,105,.22); background: rgba(71,85,105,.09); }

/* Compact image placeholders inside technology cards */
.card-image-placeholder {
  margin: 1rem 0 .25rem;
  min-height: 156px;
  border: 1.5px dashed var(--line-strong);
  border-radius: 18px;
  padding: 1rem;
  background: linear-gradient(135deg, rgba(17,115,107,.075), rgba(209,109,53,.08)), rgba(255,255,255,.58);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: .65rem;
}
.card-image-placeholder strong { display: block; font-size: .92rem; color: var(--text); letter-spacing: -.015em; }
.card-image-placeholder span { display: block; color: var(--muted); font-size: .85rem; line-height: 1.5; }
.card-image-placeholder em { width: fit-content; font-style: normal; font-size: .72rem; font-weight: 850; color: var(--teal); background: rgba(255,255,255,.78); border: 1px solid var(--line); border-radius: 999px; padding: .18rem .52rem; }

/* Full-screen VS Code-style detail workspace */
body.detail-lock { overflow: hidden; }
.detail-root {
  position: fixed;
  inset: 0;
  z-index: 5000;
  display: none;
  grid-template-rows: minmax(0, 1fr);
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  background: #fffaf1;
  color: var(--text);
}
.detail-root.is-open { display: grid; }
.detail-topbar {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: .85rem;
  padding: .55rem .82rem;
  background: #15202b;
  color: #fffaf1;
  border-bottom: 1px solid rgba(255,255,255,.12);
}
.window-dots { display: flex; gap: .42rem; padding: 0 .18rem; }
.window-dots span { width: 12px; height: 12px; border-radius: 999px; background: #f0c843; box-shadow: 0 0 0 1px rgba(0,0,0,.18) inset; }
.window-dots span:first-child { background: #e05a47; }
.window-dots span:last-child { background: #4eaa64; }
.workspace-title { min-width: 0; display: grid; gap: .06rem; }
.workspace-title strong { min-width: 0; display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: .98rem; line-height: 1.16; letter-spacing: -.02em; }
.workspace-title span { min-width: 0; display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: rgba(255,250,241,.65); font-size: .78rem; }
.workspace-close {
  position: fixed;
  top: .65rem;
  right: .65rem;
  z-index: 5;
  appearance: none;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 10px;
  background: rgba(255,255,255,.08);
  color: #fffaf1;
  cursor: pointer;
  font-size: 1.45rem;
  line-height: 1;
  transition: background .14s ease, transform .14s ease;
}
.workspace-close:hover,
.workspace-close:focus-visible { background: rgba(224,90,71,.38); border-color: rgba(224,90,71,.58); transform: translateY(-1px); outline: none; }
.workspace-body { min-width: 0; min-height: 0; display: grid; grid-template-columns: 236px minmax(0, 1fr); }
.workspace-sidebar {
  min-width: 0;
  min-height: 0;
  overflow-y: auto;
  background: #1d2936;
  color: rgba(255,250,241,.82);
  border-right: 1px solid rgba(255,255,255,.1);
  padding: .72rem .55rem;
}
.sidebar-title { padding: .52rem .68rem .68rem; color: rgba(255,250,241,.5); font-size: .72rem; line-height: 1; font-weight: 950; letter-spacing: .14em; text-transform: uppercase; }
.sidebar-list { display: grid; gap: .28rem; }
.sidebar-item {
  appearance: none;
  width: 100%;
  display: grid;
  gap: .18rem;
  text-align: left;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: rgba(255,250,241,.82);
  padding: .72rem .72rem .72rem .82rem;
  cursor: pointer;
  transition: background .12s ease, color .12s ease, box-shadow .12s ease;
}
.sidebar-item:hover,
.sidebar-item:focus-visible { background: rgba(255,255,255,.08); color: #fff; outline: none; }
.sidebar-item.active { color: #fff; background: rgba(17,143,135,.2); box-shadow: inset 3px 0 0 #6fd6ca; }
.sidebar-item strong { display: block; font-size: .96rem; font-weight: 950; line-height: 1.22; letter-spacing: -.015em; }
.sidebar-item span { display: block; color: rgba(255,250,241,.54); font-size: .72rem; line-height: 1.28; }
.workspace-main {
  min-width: 0;
  min-height: 0;
  overflow-y: auto;
  outline: none;
  padding: 1.25rem clamp(1rem, 3vw, 2.4rem) 2.6rem;
  background:
    linear-gradient(90deg, rgba(21,32,43,.035) 1px, transparent 1px) 0 0 / 24px 24px,
    linear-gradient(0deg, rgba(21,32,43,.024) 1px, transparent 1px) 0 0 / 24px 24px,
    #fffaf1;
}
.workspace-document { max-width: 920px; }
.file-tab {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  max-width: 100%;
  padding: .48rem .72rem;
  border: 1px solid var(--line);
  border-bottom: 0;
  border-radius: 13px 13px 0 0;
  background: #fffdf8;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: .82rem;
  font-weight: 800;
}
.doc-head {
  border: 1px solid var(--line);
  border-radius: 0 var(--radius) 0 0;
  background: linear-gradient(135deg, rgba(17,115,107,.08), rgba(255,253,248,.94));
  padding: clamp(1.1rem, 3vw, 1.75rem);
}
.doc-head h2 { margin: 0 0 .65rem; font-size: clamp(2rem, 4vw, 3.55rem); line-height: 1.04; }
.doc-head p { color: var(--muted); max-width: 760px; }
.doc-sections {
  display: grid;
  gap: .9rem;
  padding: clamp(1rem, 2.4vw, 1.55rem);
  border: 1px solid var(--line);
  border-top: 0;
  border-radius: 0 0 var(--radius) var(--radius);
  background: rgba(255,253,248,.94);
  box-shadow: var(--shadow-soft);
}
.doc-block { border: 1px solid var(--line); border-radius: var(--radius-sm); background: rgba(255,255,255,.64); padding: 1rem 1.08rem; }
.doc-block h3 { margin: 0 0 .42rem; color: var(--text); font-size: 1.04rem; letter-spacing: -.02em; }
.doc-block p { margin: 0; max-width: 760px; color: var(--muted); }
.doc-block ul { margin: .1rem 0 0; padding-left: 1.1rem; color: var(--muted); }
.doc-block li { margin: .3rem 0; }
.doc-placeholder { border-style: dashed; background: linear-gradient(135deg, rgba(17,115,107,.075), rgba(255,253,248,.94)); }

/* Contact page */
.contact-section { padding-top: 1.4rem; }
.contact-layout { display: grid; grid-template-columns: minmax(260px, .72fr) minmax(0, 1.28fr); gap: clamp(1rem, 3vw, 1.5rem); align-items: stretch; }
.contact-copy-card, .contact-panel { border: 1px solid var(--line); border-radius: 28px; box-shadow: var(--shadow-soft); }
.contact-copy-card { background: radial-gradient(circle at top left, rgba(255,255,255,.18), transparent 18rem), linear-gradient(145deg, #15202b, #163d43 58%, #11736b); color: #fffaf1; padding: clamp(1.35rem, 3vw, 2rem); min-height: 100%; display: flex; flex-direction: column; justify-content: space-between; gap: 2rem; overflow: hidden; position: relative; }
.contact-copy-card::after { content: ""; position: absolute; width: 260px; height: 260px; right: -90px; bottom: -100px; border-radius: 999px; background: rgba(255,255,255,.09); }
.contact-copy-card > * { position: relative; z-index: 1; }
.contact-copy-card .eyebrow { color: rgba(255,250,241,.72); }
.contact-copy-card h2 { margin: 0 0 1rem; font-size: clamp(1.8rem, 3.3vw, 2.75rem); }
.contact-copy-card p { color: rgba(255,250,241,.78); margin: 0; }
.contact-direct { display: grid; gap: .35rem; padding-top: 1.25rem; border-top: 1px solid rgba(255,255,255,.18); }
.contact-direct span { color: rgba(255,250,241,.56); font-size: .8rem; font-weight: 850; text-transform: uppercase; letter-spacing: .11em; }
.contact-direct a { color: #fffaf1; text-decoration: none; font-weight: 900; overflow-wrap: anywhere; }
.contact-panel { background: rgba(255,253,248,.94); padding: clamp(1.1rem, 3vw, 1.7rem); }
.contact-form { display: grid; gap: 1.15rem; }
.topic-fieldset { border: 0; padding: 0; margin: 0; }
.topic-fieldset legend, .form-field label { display: block; margin: 0 0 .45rem; font-weight: 900; color: var(--text); font-size: .92rem; }
.topic-options { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .62rem; }
.topic-option { min-height: 58px; position: relative; display: flex; align-items: center; justify-content: center; text-align: center; border: 1px solid var(--line-strong); border-radius: 16px; background: #fffdf8; color: var(--muted); font-weight: 900; padding: .72rem .75rem; cursor: pointer; transition: background .16s ease, color .16s ease, border-color .16s ease, box-shadow .16s ease, transform .16s ease; }
.topic-option:hover { transform: translateY(-1px); border-color: rgba(17,115,107,.55); box-shadow: 0 8px 18px rgba(36,29,18,.06); }
.topic-option input { position: absolute; opacity: 0; pointer-events: none; }
.topic-option:has(input:checked) { color: #fffaf1; background: linear-gradient(135deg, #15202b, #11736b); border-color: #11736b; box-shadow: 0 10px 24px rgba(17,115,107,.18); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .9rem; }
.form-field { min-width: 0; }
.form-field.full { grid-column: 1 / -1; }
.form-field input, .form-field select, .form-field textarea { display: block; width: 100%; min-height: 52px; border: 1px solid var(--line-strong); border-radius: 16px; background: #fffdf8; color: var(--text); padding: .9rem .98rem; font: inherit; line-height: 1.42; box-shadow: 0 1px 0 rgba(255,255,255,.86) inset; }
.form-field textarea { min-height: 188px; resize: vertical; }
.form-field input::placeholder, .form-field textarea::placeholder { color: #9b9b93; }
.form-field input:focus, .form-field select:focus, .form-field textarea:focus, .topic-option:focus-within { outline: 3px solid rgba(17,115,107,.18); border-color: var(--teal); }
.form-help { display: block; margin-top: .45rem; color: var(--muted); font-size: .86rem; }
.form-actions { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; padding-top: .35rem; }
.form-note { color: var(--muted); font-size: .88rem; margin: 0; }

@media (max-width: 980px) {
  .hero-body, .split-section, .contact-layout { grid-template-columns: 1fr; }
  .card-grid.three, .card-grid.four, .card-grid.two, .pillar-grid, .principle-grid, .contact-grid, .timeline, .card-grid.tech-grid, .mini-tech-grid { grid-template-columns: 1fr 1fr; }
  .site-nav { justify-content: flex-end; }
}
@media (max-width: 760px) {
  .hero-body { display: flex; flex-direction: column; }
  .hero-visual { order: -1; }
  .nav-shell { flex-wrap: wrap; }
  .nav-toggle { display: inline-flex; margin-left: auto; }
  .lang-switch { order: 3; }
  .site-nav { display: none; flex-basis: 100%; order: 4; flex-direction: column; align-items: stretch; background: rgba(255,253,248,.92); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: .4rem; }
  .site-nav.open { display: flex; }
  .site-nav a { border-radius: 12px; }
  h1 { font-size: clamp(2.1rem, 12vw, 3.2rem); }
  .card-grid.three, .card-grid.four, .card-grid.two, .pillar-grid, .principle-grid, .contact-grid, .timeline, .card-grid.tech-grid, .mini-tech-grid { grid-template-columns: 1fr; }
  .mini-card-list > div { grid-template-columns: 1fr; }
  .footer-minimal { align-items: flex-start; flex-direction: column; }
  .detail-topbar { grid-template-columns: minmax(0, 1fr) auto; }
  .window-dots { display: none; }
  .workspace-body { grid-template-columns: 1fr; grid-template-rows: 104px minmax(0, 1fr); }
  .workspace-sidebar { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.1); overflow-x: auto; overflow-y: hidden; padding: .45rem; }
  .sidebar-title { display: none; }
  .sidebar-list { display: flex; gap: .4rem; }
  .sidebar-item { width: 176px; min-width: 176px; padding: .62rem .7rem; }
  .sidebar-item.active { box-shadow: inset 0 -3px 0 #6fd6ca; }
  .sidebar-item span { display: none; }
  .workspace-main { padding: .85rem .85rem 1.6rem; }
  .contact-copy-card::after { display: none; }
  .topic-options { grid-template-columns: 1fr 1fr; }
  .form-grid { grid-template-columns: 1fr; }
}
@media (max-width: 460px) { .topic-options { grid-template-columns: 1fr; } .contact-copy-card, .contact-panel { border-radius: 22px; } }
@supports not selector(:has(*)) { .topic-option input:checked + span { color: var(--teal); } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; } .reveal { opacity: 1; transform: none; } }

/* v3-final: classes used by detail-workspace.js */
body.detail-lock {
  overflow: hidden;
}
body.detail-lock .site-header,
body.detail-lock .scroll-progress {
  display: none;
}
.detail-root {
  position: fixed;
  inset: 0;
  z-index: 6000;
  display: none;
  grid-template-rows: minmax(0, 1fr);
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  background: #101820;
  color: var(--text);
}
.detail-root.is-open {
  display: grid;
}
.detail-topbar {
  min-width: 0;
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) 46px;
  align-items: center;
  gap: .75rem;
  padding: 0 .55rem;
  background: #182331;
  color: #fffaf1;
  border-bottom: 1px solid rgba(255,255,255,.10);
}
.window-dots {
  display: flex;
  align-items: center;
  gap: .42rem;
  padding-left: .4rem;
}
.window-dots span {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: #f0c843;
  box-shadow: 0 0 0 1px rgba(0,0,0,.18) inset;
}
.window-dots span:first-child { background: #e05a47; }
.window-dots span:last-child { background: #4eaa64; }
.workspace-title {
  min-width: 0;
  display: grid;
  gap: .02rem;
  text-align: center;
}
.workspace-title strong {
  min-width: 0;
  color: #fffaf1;
  font-size: .92rem;
  line-height: 1.18;
  letter-spacing: -.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.workspace-title span {
  min-width: 0;
  color: rgba(255,250,241,.60);
  font-size: .72rem;
  line-height: 1.15;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.workspace-close {
  justify-self: end;
  position: fixed;
  top: .65rem;
  right: .65rem;
  z-index: 5;
  appearance: none;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 8px;
  background: rgba(255,255,255,.07);
  color: #fffaf1;
  cursor: pointer;
  font-size: 1.45rem;
  line-height: 1;
}
.workspace-close:hover,
.workspace-close:focus-visible {
  background: rgba(224,90,71,.32);
  border-color: rgba(224,90,71,.58);
  outline: none;
}
.workspace-body {
  position: relative;
  min-width: 0;
  min-height: 0;
  display: grid;
  grid-template-columns: clamp(220px, 21vw, 300px) minmax(0, 1fr);
}
.workspace-sidebar {
  min-width: 0;
  min-height: 0;
  overflow-y: auto;
  background: #202d3a;
  color: rgba(255,250,241,.80);
  border-right: 1px solid rgba(255,255,255,.10);
  padding: .72rem .58rem 1.2rem;
}
.sidebar-title {
  padding: .45rem .65rem .72rem;
  color: rgba(255,250,241,.48);
  font-size: .72rem;
  font-weight: 950;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.sidebar-list {
  display: grid;
  gap: .25rem;
}
.sidebar-item {
  appearance: none;
  width: 100%;
  display: grid;
  gap: .18rem;
  border: 0;
  border-radius: 11px;
  background: transparent;
  color: rgba(255,250,241,.76);
  text-align: left;
  padding: .72rem .75rem .72rem .85rem;
  cursor: pointer;
  transition: background .12s ease, color .12s ease, box-shadow .12s ease;
}
.sidebar-item:hover,
.sidebar-item:focus-visible {
  background: rgba(255,255,255,.075);
  color: #fffaf1;
  outline: none;
}
.sidebar-item.active,
.sidebar-item[aria-selected="true"] {
  background: rgba(17,143,135,.27);
  color: #fffaf1;
  box-shadow: inset 3px 0 0 #21b7ad;
}
.sidebar-item strong {
  display: block;
  font-size: .94rem;
  line-height: 1.22;
  font-weight: 950;
  letter-spacing: -.015em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sidebar-item span {
  display: block;
  color: rgba(255,250,241,.52);
  font-size: .72rem;
  line-height: 1.28;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.workspace-main {
  min-width: 0;
  min-height: 0;
  overflow-y: auto;
  outline: none;
  padding: 1.4rem clamp(1rem, 3vw, 2.6rem) 2.8rem;
  background:
    linear-gradient(90deg, rgba(21,32,43,.035) 1px, transparent 1px) 0 0 / 24px 24px,
    linear-gradient(0deg, rgba(21,32,43,.024) 1px, transparent 1px) 0 0 / 24px 24px,
    #fffaf1;
}
.workspace-document {
  max-width: 940px;
}
.file-tab {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  max-width: 100%;
  padding: .5rem .76rem;
  border: 1px solid var(--line);
  border-bottom: 0;
  border-radius: 13px 13px 0 0;
  background: #fffdf8;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: .82rem;
  font-weight: 800;
}
.file-tab > span:first-child {
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.doc-head {
  border: 1px solid var(--line);
  border-radius: 0 var(--radius) var(--radius) var(--radius);
  background: rgba(255,253,248,.95);
  box-shadow: var(--shadow-soft);
  padding: clamp(1.15rem, 3vw, 1.85rem);
}
.doc-head .eyebrow {
  margin-bottom: .65rem;
}
.doc-head h2 {
  margin: 0 0 .55rem;
  font-size: clamp(2.05rem, 4vw, 3.7rem);
  line-height: 1.02;
  letter-spacing: -.055em;
}
.doc-head .hero-lead {
  margin: 0 0 .6rem;
}
.doc-head p:not(.eyebrow):not(.hero-lead) {
  margin: 0;
  max-width: 820px;
  color: var(--muted);
}
.doc-sections {
  display: grid;
  gap: .9rem;
  margin-top: 1rem;
}
.doc-block {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255,253,248,.90);
  box-shadow: 0 1px 0 rgba(255,255,255,.76) inset;
  padding: 1.05rem 1.15rem;
}
.doc-block h3 {
  margin: 0 0 .42rem;
  font-size: 1.06rem;
  letter-spacing: -.02em;
}
.doc-block p {
  margin: 0;
  max-width: 820px;
  color: var(--muted);
}
.doc-block ul {
  margin: .4rem 0 0;
  padding-left: 1.2rem;
  color: var(--muted);
}
.doc-placeholder {
  border-style: dashed;
  background: linear-gradient(135deg, rgba(17,115,107,.08), rgba(255,253,248,.94));
}
@media (max-width: 760px) {
  .detail-topbar {
    grid-template-columns: minmax(0, 1fr) 42px;
    padding-left: .8rem;
  }
  .window-dots {
    display: none;
  }
  .workspace-title {
    text-align: left;
  }
  .workspace-body {
    grid-template-columns: minmax(116px, 34vw) minmax(0, 1fr);
  }
  .workspace-sidebar {
    padding: .52rem .38rem;
  }
  .sidebar-title {
    display: none;
  }
  .sidebar-item {
    padding: .6rem .48rem;
  }
  .sidebar-item strong {
    font-size: .78rem;
    white-space: normal;
  }
  .sidebar-item span {
    display: none;
  }
  .workspace-main {
    padding: .85rem .75rem 2rem;
  }
  .doc-head h2 {
    font-size: clamp(1.5rem, 7vw, 2.1rem);
  }
  .file-tab {
    max-width: 100%;
  }
}

/* Contact form variant used by contact/index.html */
.contact-page-wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(2.5rem, 6vw, 4.6rem) 1.2rem clamp(4rem, 8vw, 6rem);
}
.contact-shell-v3 {
  display: grid;
  grid-template-columns: minmax(280px, .82fr) minmax(420px, 1.18fr);
  gap: clamp(1.25rem, 3.5vw, 2.5rem);
  align-items: start;
}
.contact-shell-v3 .contact-copy-card {
  position: sticky;
  top: 92px;
  border-radius: 30px;
  border: 1px solid rgba(21,32,43,.12);
  background:
    radial-gradient(circle at 12% 0%, rgba(255,255,255,.16), transparent 16rem),
    linear-gradient(145deg, #15202b, #163d43 58%, #11736b);
  color: #fffaf1;
  box-shadow: var(--shadow-soft);
  padding: clamp(1.4rem, 3vw, 2.1rem);
}
.contact-shell-v3 .contact-copy-card .eyebrow { color: rgba(255,250,241,.68); }
.contact-shell-v3 .contact-copy-card h1 {
  margin: 0 0 .9rem;
  font-size: clamp(2.1rem, 4.4vw, 4rem);
}
.contact-shell-v3 .contact-copy-card p { color: rgba(255,250,241,.78); }
.contact-shell-v3 .contact-direct { border-top-color: rgba(255,255,255,.18); }
.contact-shell-v3 .contact-direct span { color: rgba(255,250,241,.56); }
.contact-shell-v3 .contact-direct a { color: #fffaf1; }
.contact-form-card {
  border: 1px solid var(--line);
  border-radius: 30px;
  background: rgba(255,253,248,.96);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.contact-form-card-head {
  padding: clamp(1.2rem, 3vw, 1.65rem);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(17,115,107,.09), rgba(255,253,248,.95));
}
.contact-form-card-head h2 { margin: 0 0 .35rem; font-size: clamp(1.4rem, 2.4vw, 2.05rem); }
.contact-form-card-head p { margin: 0; color: var(--muted); }
.contact-form-v3 {
  display: grid;
  gap: 1.2rem;
  padding: clamp(1.2rem, 3vw, 1.7rem);
}
.topic-picker { display: grid; gap: .7rem; }
.topic-picker-label,
.field-label { color: var(--text); font-size: .88rem; font-weight: 950; }
.topic-options-v3 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .72rem; }
.topic-option {
  position: relative;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .2rem .6rem;
  min-height: 54px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fffaf1;
  padding: .75rem 1rem;
  cursor: pointer;
  text-align: left;
  transition: border-color .15s ease, box-shadow .15s ease, background .15s ease, transform .15s ease;
}
.topic-option:hover { transform: translateY(-1px); border-color: var(--line-strong); box-shadow: var(--shadow-soft); }
.topic-option input { position: absolute; left: 0.75rem; top: 50%; transform: translateY(-50%); width: 1.05rem; height: 1.05rem; accent-color: var(--teal); }
.topic-option strong { color: var(--text); line-height: 1.25; flex: 0 0 130px; text-align: left; }
.topic-option span { color: var(--muted); font-size: .83rem; line-height: 1.25; flex: 1; text-align: left; }
.topic-option:has(input:checked) { border-color: rgba(17,115,107,.72); background: rgba(17,115,107,.075); box-shadow: 0 0 0 4px rgba(17,115,107,.08); }
.form-row-v3 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .95rem; }
.field-v3 { display: grid; gap: .42rem; }
.input-v3,
.textarea-v3,
.select-v3 {
  width: 100%;
  min-height: 52px;
  border: 1px solid var(--line-strong);
  border-radius: 15px;
  background: #fffaf1;
  color: var(--text);
  font: inherit;
  padding: .85rem .95rem;
  outline: none;
  transition: border-color .15s ease, box-shadow .15s ease, background .15s ease;
}
.textarea-v3 { min-height: 220px; resize: vertical; line-height: 1.55; }
.input-v3:focus,
.textarea-v3:focus,
.select-v3:focus { border-color: var(--teal); background: #fffdf8; box-shadow: 0 0 0 4px rgba(17,115,107,.12); }
.consent-row { display: flex; align-items: flex-start; gap: .75rem; padding: .9rem 1rem; border: 1px solid var(--line); border-radius: 15px; background: rgba(255,253,248,.9); }
.consent-checkbox { flex: 0 0 auto; width: 1.05rem; height: 1.05rem; margin-top: .15rem; accent-color: var(--teal); }
.consent-copy { color: var(--muted); font-size: .9rem; line-height: 1.5; }
.consent-row:has(.consent-checkbox:focus-visible) { border-color: var(--teal); box-shadow: 0 0 0 4px rgba(17,115,107,.12); }
.form-footer-v3 { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-top: .25rem; flex-wrap: wrap; }
.form-disclaimer-v3 { margin: 0; color: var(--muted); font-size: .86rem; max-width: 460px; }
.form-status-v3 {
  min-height: 1.5rem;
  margin: 0;
  color: var(--muted);
  font-size: .9rem;
  font-weight: 800;
}
.form-status-v3[data-state="pending"] { color: var(--teal); }
.form-status-v3[data-state="success"] { color: var(--green); }
.form-status-v3[data-state="error"] { color: var(--danger); }
.button:disabled {
  cursor: not-allowed;
  opacity: .62;
}
.contact-honeypot {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  border: 0;
  padding: 0;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  overflow: hidden;
  white-space: nowrap;
}
.button-large { min-height: 52px; padding-left: 1.35rem; padding-right: 1.35rem; }
@media (max-width: 900px) {
  .contact-shell-v3 { grid-template-columns: 1fr; }
  .contact-shell-v3 .contact-copy-card { position: static; }
}
@media (max-width: 760px) {
  .topic-options-v3,
  .form-row-v3 { grid-template-columns: 1fr; }
  .form-footer-v3 { align-items: stretch; }
  .form-footer-v3 .button { width: 100%; }
}

/* v4: global VS Code-style detail workspace with folder tree */
.detail-root {
  grid-template-rows: minmax(0, 1fr);
  background: #101820;
}
.detail-topbar {
  grid-template-columns: minmax(0, 1fr) 44px;
  padding: 0 .5rem 0 clamp(.9rem, 1.8vw, 1.25rem);
  background: #172230;
}
.workspace-title {
  text-align: left;
  gap: .03rem;
}
.workspace-title strong { font-size: .95rem; }
.workspace-title span { font-size: .74rem; color: rgba(255,250,241,.62); }
.workspace-close {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: rgba(23,34,48,.92);
  border-color: rgba(255,255,255,.18);
  color: #fffaf1;
  box-shadow: 0 10px 28px rgba(0,0,0,.22);
}
.workspace-body {
  grid-template-columns: clamp(270px, 25vw, 360px) minmax(0, 1fr);
}
.workspace-sidebar {
  padding: 0;
  background: #1c2936;
  border-right: 1px solid rgba(255,255,255,.12);
}
.sidebar-header {
  position: sticky;
  top: 0;
  z-index: 2;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  align-items: center;
  gap: .6rem;
  padding: .72rem .74rem;
  background: #202f3e;
  border-bottom: 1px solid rgba(255,255,255,.10);
}
.sidebar-back {
  appearance: none;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 9px;
  background: rgba(255,255,255,.07);
  color: #fffaf1;
  cursor: pointer;
  font-size: 1.65rem;
  font-weight: 900;
  line-height: 1;
}
.sidebar-back:hover,
.sidebar-back:focus-visible {
  background: rgba(255,255,255,.13);
  border-color: rgba(255,255,255,.28);
  outline: none;
}
.sidebar-head-text { min-width: 0; display: grid; gap: .05rem; }
.sidebar-head-text span {
  color: rgba(255,250,241,.46);
  font-size: .68rem;
  font-weight: 950;
  letter-spacing: .14em;
}
.sidebar-head-text strong {
  min-width: 0;
  color: #fffaf1;
  font-size: .94rem;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sidebar-tree {
  display: grid;
  gap: .45rem;
  padding: .7rem .58rem 1.25rem;
}
.sidebar-folder {
  display: grid;
  gap: .22rem;
}
.folder-toggle {
  appearance: none;
  width: 100%;
  min-height: 34px;
  display: grid;
  grid-template-columns: 18px 22px minmax(0, 1fr) auto;
  align-items: center;
  gap: .24rem;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: rgba(255,250,241,.86);
  text-align: left;
  cursor: pointer;
  padding: .43rem .55rem;
  font: inherit;
}
.folder-toggle:hover,
.folder-toggle:focus-visible {
  background: rgba(255,255,255,.075);
  outline: none;
}
.folder-caret {
  color: rgba(255,250,241,.58);
  font-size: .86rem;
  line-height: 1;
}
.folder-icon { font-size: .88rem; line-height: 1; filter: saturate(.82); }
.folder-name {
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  font-size: .82rem;
  font-weight: 900;
  letter-spacing: -.01em;
}
.folder-count {
  color: rgba(255,250,241,.45);
  font-size: .68rem;
  font-weight: 850;
  border: 1px solid rgba(255,255,255,.10);
  border-radius: 999px;
  padding: .02rem .38rem;
}
.folder-list {
  display: grid;
  gap: .14rem;
  padding-left: .58rem;
  margin-left: .78rem;
  border-left: 1px solid rgba(255,255,255,.10);
}
.sidebar-folder.is-closed .folder-list { display: none; }
.sidebar-item {
  grid-template-columns: 18px minmax(0, 1fr);
  align-items: start;
  gap: .26rem;
  padding: .52rem .58rem .52rem .45rem;
  border-radius: 9px;
}
.sidebar-item .file-icon {
  color: rgba(255,250,241,.42);
  font-size: .74rem;
  line-height: 1.28;
  padding-top: .12rem;
}
.sidebar-file-text {
  min-width: 0;
  display: grid;
  gap: .08rem;
}
.sidebar-item strong { font-size: .84rem; }
.sidebar-item span span,
.sidebar-file-text > span {
  color: rgba(255,250,241,.50);
  font-size: .68rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sidebar-item[aria-selected="true"] .file-icon { color: #6fd6ca; }
.workspace-main {
  padding: 1.4rem clamp(1.1rem, 3.4vw, 3.1rem) 3.2rem;
}
.workspace-document {
  max-width: 1120px;
}
.doc-head {
  border-radius: 0 var(--radius) var(--radius) var(--radius);
}
.doc-hero-image { margin-top: 1rem; }
.doc-hero-image .detail-image-placeholder {
  min-height: clamp(260px, 34vw, 430px);
}
.doc-image-section {
  margin-top: 1.05rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255,253,248,.94);
  box-shadow: var(--shadow-soft);
  padding: clamp(1rem, 2.4vw, 1.35rem);
}
.doc-image-section h3 {
  margin: 0 0 .85rem;
  font-size: 1.18rem;
}
.detail-image-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .9rem;
}
.detail-image-placeholder {
  min-height: 240px;
  margin: 0;
  border-radius: 18px;
  background:
    radial-gradient(circle at 18% 12%, rgba(17,115,107,.13), transparent 19rem),
    linear-gradient(135deg, rgba(17,115,107,.10), rgba(198,106,53,.10)),
    #fffaf1;
}
.detail-image-placeholder figcaption {
  padding: 1.05rem;
}
.detail-image-placeholder strong {
  font-size: .75rem;
  letter-spacing: .1em;
}
.detail-image-placeholder span {
  font-size: .88rem;
  line-height: 1.46;
}
.doc-block {
  padding: 1.08rem 1.2rem;
}
@media (max-width: 860px) {
  .workspace-body {
    grid-template-columns: minmax(176px, 42vw) minmax(0, 1fr);
  }
  .sidebar-header {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: .48rem;
    padding: .62rem .54rem;
  }
  .sidebar-back { width: 31px; height: 31px; }
  .sidebar-head-text span { display: none; }
  .sidebar-tree { padding: .55rem .38rem 1rem; }
  .folder-toggle {
    grid-template-columns: 14px minmax(0, 1fr);
    gap: .24rem;
    padding: .42rem .44rem;
  }
  .folder-icon,
  .folder-count { display: none; }
  .folder-name { font-size: .75rem; white-space: normal; }
  .folder-list {
    padding-left: .32rem;
    margin-left: .38rem;
  }
  .sidebar-item {
    grid-template-columns: minmax(0, 1fr);
    padding: .52rem .42rem;
  }
  .sidebar-item .file-icon { display: none; }
  .sidebar-item strong { font-size: .75rem; white-space: normal; }
  .sidebar-file-text > span { display: none; }
  .workspace-main { padding: .85rem .72rem 2rem; }
  .detail-image-grid { grid-template-columns: 1fr; }
  .doc-hero-image .detail-image-placeholder,
  .detail-image-placeholder { min-height: 210px; }
}
@media (max-width: 560px) {
  .workspace-body { grid-template-columns: 132px minmax(0, 1fr); }
  .detail-topbar { padding-left: .65rem; }
  .workspace-title span { display: none; }
  .sidebar-head-text strong { font-size: .76rem; }
  .doc-head h2 { font-size: clamp(1.45rem, 8vw, 2rem); }
  .file-tab { font-size: .7rem; }
}