:root {
  --page-bg: #EDE9DF;
  --text: #14181F;
  --text-soft: #4B5160;
  --card-bg: #FFFFFF;
  --line: rgba(20,24,31,0.14);
  --belt-blue: #2A5C8A;
  --belt-blue-deep: #163150;
  --belt-blue-tint: #E4EDF5;
  --alert-rust: #B5502A;
  --alert-rust-tint: #F5E6DD;
  --accent: #2A5C8A;
  --nav-bg: rgba(237,233,223,0.92);
  --plate-bg: #F7F4EC;
  --plate-line: #C9C2AE;
}
@media (prefers-color-scheme: dark) {
  :root {
    --page-bg: #10151C;
    --text: #E9E5DA;
    --text-soft: #A9AFBC;
    --card-bg: #1A2028;
    --line: rgba(233,229,218,0.16);
    --belt-blue: #6FA8D8;
    --belt-blue-deep: #9FC4E8;
    --belt-blue-tint: #1E2E3D;
    --alert-rust: #E08659;
    --alert-rust-tint: #3A281F;
    --accent: #6FA8D8;
    --nav-bg: rgba(16,21,28,0.88);
  }
}
html[data-theme="dark"] {
  --page-bg: #10151C;
  --text: #E9E5DA;
  --text-soft: #A9AFBC;
  --card-bg: #1A2028;
  --line: rgba(233,229,218,0.16);
  --belt-blue: #6FA8D8;
  --belt-blue-deep: #9FC4E8;
  --belt-blue-tint: #1E2E3D;
  --alert-rust: #E08659;
  --alert-rust-tint: #3A281F;
  --accent: #6FA8D8;
  --nav-bg: rgba(16,21,28,0.88);
}
html[data-theme="light"] {
  --page-bg: #EDE9DF;
  --text: #14181F;
  --text-soft: #4B5160;
  --card-bg: #FFFFFF;
  --line: rgba(20,24,31,0.14);
  --belt-blue: #2A5C8A;
  --belt-blue-deep: #163150;
  --belt-blue-tint: #E4EDF5;
  --alert-rust: #B5502A;
  --alert-rust-tint: #F5E6DD;
  --accent: #2A5C8A;
  --nav-bg: rgba(237,233,223,0.92);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
img, svg, video, iframe { max-width: 100%; height: auto; }
body {
  margin: 0;
  overflow-x: hidden;
  background: var(--page-bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

h1, h2, h3 {
  font-family: "Arial Narrow", "Roboto Condensed", "Segoe UI", sans-serif;
  text-wrap: balance;
  margin: 0;
  color: var(--text);
}

a { color: var(--accent); }
a:visited { color: var(--accent); }

code {
  font-family: "Cascadia Code", "SF Mono", ui-monospace, Consolas, monospace;
  font-size: 0.88em;
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0.1em 0.4em;
  color: var(--text);
}

.eyebrow {
  display: block;
  font-family: "Cascadia Code", "SF Mono", ui-monospace, Consolas, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.5rem;
}

header.top {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--nav-bg);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.top-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}
.top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.top-actions { display: flex; align-items: center; gap: 0.6rem; flex-shrink: 0; }
.brand { display: flex; align-items: center; gap: 0.75rem; text-decoration: none; min-width: 0; }
.brand-mark {
  width: 2.4rem; height: 2.4rem;
  object-fit: cover;
  object-position: center;
  border-radius: 50%;
  flex-shrink: 0;
  border: 1px solid var(--line);
  background: #10151C;
  display: block;
}
.brand-text .brand-title { margin: 0; font-size: 1.3rem; font-weight: 700; letter-spacing: 0.01em; }
.brand-text .eyebrow { margin: 0 0 0.15rem; }
nav { display: flex; align-items: center; gap: 1.1rem; flex-wrap: wrap; }
nav a {
  font-family: "Cascadia Code", "SF Mono", ui-monospace, Consolas, monospace;
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}
nav a:hover { color: var(--accent); border-color: var(--accent); }
nav a[aria-current="page"] { color: var(--accent); border-color: var(--accent); }

.nav-dropdown { position: relative; display: inline-flex; align-items: center; }
.nav-dropdown-trigger {
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.28rem 0.55rem;
  cursor: pointer;
  font-family: "Cascadia Code", "SF Mono", ui-monospace, Consolas, monospace;
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-soft);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  line-height: 1;
}
.nav-dropdown-trigger:hover, .nav-dropdown-trigger.is-current { color: var(--accent); border-color: var(--accent); }
.nav-dropdown-arrow { font-size: 0.6rem; display: inline-block; transition: transform 0.15s ease; }
.nav-dropdown.open .nav-dropdown-arrow { transform: rotate(180deg); }
.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 0.7rem;
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: 0 12px 28px rgba(0,0,0,0.18);
  padding: 0.4rem;
  min-width: 220px;
  flex-direction: column;
  gap: 0.05rem;
  z-index: 40;
}
.nav-dropdown.open .nav-dropdown-menu { display: flex; }
.nav-dropdown-menu a {
  padding: 0.5rem 0.6rem;
  border-radius: 4px;
  border-bottom: none;
}
.nav-dropdown-menu a:hover, .nav-dropdown-menu a[aria-current="page"] {
  background: var(--belt-blue-tint);
  color: var(--belt-blue-deep);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 36px; height: 36px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 4px;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--text); border-radius: 1px; }
.nav-toggle:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

@media (max-width: 760px) {
  .top-inner { position: relative; }
  .nav-toggle { display: flex; }
  nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    background: var(--page-bg);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 12px 24px rgba(0,0,0,0.15);
    padding: 1rem 1.5rem 1.3rem;
    gap: 0.9rem;
    z-index: 30;
  }
  nav.open { display: flex; }
  nav a { font-size: 0.82rem; }
  .search-trigger-label-full { display: none; }
  .nav-dropdown { width: 100%; flex-direction: column; align-items: flex-start; }
  .nav-dropdown-trigger { width: auto; }
  .nav-dropdown-menu {
    position: static;
    margin-top: 0.5rem;
    margin-left: 0.8rem;
    background: none;
    border: none;
    box-shadow: none;
    padding: 0;
    min-width: 0;
  }
  .nav-dropdown-menu a { font-size: 0.82rem; }
  .diagram-modal { padding: 0.8rem; }
  .diagram-modal-inner { height: 78vh; }
  .diagram-modal .lightbox-close { top: -2.6rem; }
}
.theme-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  border: none;
  padding: 0;
  cursor: pointer;
  flex-shrink: 0;
}
.theme-switch-track {
  position: relative;
  width: 44px;
  height: 24px;
  border-radius: 999px;
  background: var(--line);
  border: 1px solid var(--line);
  transition: background 0.2s ease, border-color 0.2s ease;
}
.theme-switch[aria-checked="true"] .theme-switch-track {
  background: var(--accent);
  border-color: var(--accent);
}
.theme-switch-icon {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.68rem;
  line-height: 1;
  color: var(--text-soft);
  transition: opacity 0.2s ease;
}
.theme-switch-icon-sun { left: 5px; opacity: 1; }
.theme-switch-icon-moon { right: 5px; opacity: 0.45; }
.theme-switch[aria-checked="true"] .theme-switch-icon-sun { opacity: 0.45; }
.theme-switch[aria-checked="true"] .theme-switch-icon-moon { opacity: 1; color: #fff; }
.theme-switch-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--page-bg);
  box-shadow: 0 1px 3px rgba(0,0,0,0.35);
  transition: transform 0.2s ease;
}
.theme-switch[aria-checked="true"] .theme-switch-thumb { transform: translateX(20px); }
.theme-switch:hover .theme-switch-track { border-color: var(--accent); }
.theme-switch:focus-visible .theme-switch-track { outline: 2px solid var(--accent); outline-offset: 2px; }

main { max-width: 980px; margin: 0 auto; padding: 0 1.5rem; }

.hero { padding: 2.5rem 0 1.5rem; }
.hero-grid { display: flex; gap: 2.2rem; align-items: flex-start; flex-wrap: wrap; }
.hero-banner-figure { margin: 0; flex-shrink: 0; width: 280px; }
.hero-banner-link {
  display: block;
  width: 100%;
  padding: 0;
  margin: 0;
  background: none;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 10px 28px rgba(0,0,0,0.28);
  cursor: zoom-in;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.hero-banner-link:hover { transform: translateY(-3px); box-shadow: 0 14px 34px rgba(0,0,0,0.34); }
.hero-banner-link:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(8,10,14,0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem 1.5rem;
  z-index: 100;
  cursor: zoom-out;
}
.lightbox[hidden] { display: none; }
.lightbox-img { max-width: 92vw; max-height: 90vh; border-radius: 4px; box-shadow: 0 24px 70px rgba(0,0,0,0.55); }
.lightbox-close {
  position: absolute;
  top: 1.1rem; right: 1.3rem;
  width: 42px; height: 42px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.3);
  color: #fff;
  font-size: 1.15rem;
  cursor: pointer;
}
.lightbox-close:hover { background: rgba(255,255,255,0.18); }

.video-modal {
  position: fixed;
  inset: 0;
  background: rgba(8,10,14,0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem 1.2rem;
  z-index: 100;
}
.video-modal[hidden] { display: none; }
.video-modal-inner { position: relative; width: 100%; max-width: 960px; }
.video-modal-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000;
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 24px 70px rgba(0,0,0,0.55);
}
.video-modal-frame iframe { width: 100%; height: 100%; border: 0; display: block; }
.video-modal .lightbox-close { top: -3rem; right: 0; }

.diagram-modal {
  position: fixed;
  inset: 0;
  background: rgba(8,10,14,0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.2rem;
  z-index: 100;
}
.diagram-modal[hidden] { display: none; }
.diagram-modal-inner { position: relative; width: 100%; max-width: 1100px; height: 88vh; display: flex; }
.diagram-modal-frame {
  flex: 1;
  min-width: 0;
  background: #F7F4EC;
  border: 1px solid #C9C2AE;
  border-radius: 6px;
  overflow: hidden;
  position: relative;
  touch-action: none;
  cursor: grab;
}
.diagram-modal-frame.is-panning { cursor: grabbing; }
.diagram-modal-frame svg {
  width: 100% !important;
  height: 100% !important;
  max-width: none !important;
  display: block;
  transform-origin: center center;
  transition: transform 0.08s ease-out;
  user-select: none;
  -webkit-user-drag: none;
}
.diagram-modal .lightbox-close { top: -3rem; right: 0; }
.diagram-modal-zoom-controls {
  position: absolute;
  bottom: 0.8rem;
  right: 0.8rem;
  z-index: 2;
  display: flex;
  gap: 0.3rem;
  background: rgba(20,24,31,0.72);
  border-radius: 6px;
  padding: 0.3rem;
}
.diagram-zoom-btn {
  min-width: 2.3rem;
  height: 2.3rem;
  padding: 0 0.5rem;
  border: none;
  border-radius: 4px;
  background: rgba(255,255,255,0.14);
  color: #fff;
  font-size: 1rem;
  font-family: "Cascadia Code", "SF Mono", ui-monospace, Consolas, monospace;
  cursor: pointer;
}
.diagram-zoom-btn:hover { background: rgba(255,255,255,0.28); }
.diagram-zoom-btn:active { background: rgba(255,255,255,0.4); }
#diagram-zoom-level { min-width: 3.4rem; }

figure.plate.diagram-zoomable { cursor: zoom-in; position: relative; transition: box-shadow 0.15s ease; }
figure.plate.diagram-zoomable:hover { box-shadow: 0 6px 18px rgba(0,0,0,0.12); }
figure.plate.diagram-zoomable::after {
  content: "🔍 ampliar";
  position: absolute;
  top: 0.6rem; right: 0.7rem;
  font-size: 0.68rem;
  font-family: "Cascadia Code", "SF Mono", ui-monospace, Consolas, monospace;
  color: #4B5160;
  background: rgba(255,255,255,0.85);
  border: 1px solid #C9C2AE;
  border-radius: 3px;
  padding: 0.15rem 0.45rem;
  opacity: 0.7;
  pointer-events: none;
}
figure.plate.diagram-zoomable:hover::after { opacity: 1; }

.hero-banner { width: 100%; height: auto; display: block; }
.hero-banner-figure figcaption {
  margin-top: 0.6rem;
  font-family: "Cascadia Code", "SF Mono", ui-monospace, Consolas, monospace;
  font-size: 0.72rem;
  color: var(--text-soft);
  text-align: center;
}
.hero-text { flex: 1; min-width: 300px; max-width: 620px; }
.hero-text h1 { font-size: 2rem; margin: 0 0 0.7rem; }
.lede { font-size: 1.08rem; color: var(--text-soft); margin: 0 0 1.4rem; }

.legend { list-style: none; display: flex; gap: 0.9rem; flex-wrap: wrap; padding: 0; margin: 0; }
.chip {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.45rem 0.8rem;
  border-radius: 3px;
  font-size: 0.85rem;
  border: 1px solid var(--line);
}
.chip .icon { width: 1.5rem; height: 1rem; flex-shrink: 0; }
.chip-a { background: var(--belt-blue-tint); color: var(--belt-blue-deep); }
.chip-b { background: var(--belt-blue-tint); color: var(--belt-blue-deep); }
.chip-c { background: var(--alert-rust-tint); color: var(--alert-rust); }
.chip strong { font-weight: 700; }

.phase-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
  gap: 1rem;
  margin: 1.4rem 0 1.8rem;
}
.phase-card {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-left: 3px solid var(--belt-blue);
  border-radius: 4px;
  padding: 0.9rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.phase-card.phase-c { border-left-color: var(--alert-rust); }
.phase-tag {
  font-family: "Cascadia Code", "SF Mono", ui-monospace, Consolas, monospace;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
  color: var(--accent);
}
.phase-question { font-style: italic; font-size: 0.86rem; color: var(--text); margin: 0; }
.phase-desc { font-size: 0.84rem; color: var(--text-soft); margin: 0; }

.page-title { padding: 2.2rem 0 0.4rem; }
.page-title .eyebrow { margin-bottom: 0.6rem; }
.page-title h1 { font-size: 2rem; margin-bottom: 0.6rem; }
.page-title p { color: var(--text-soft); max-width: 62ch; font-size: 1.02rem; }

.block { padding: 2.6rem 0; border-top: 1px solid var(--line); max-width: 720px; }
.block h2 { font-size: 1.7rem; margin-bottom: 0.6rem; }
.block > p { color: var(--text-soft); max-width: 62ch; }

figure.plate {
  background: var(--plate-bg);
  border: 1px solid var(--plate-line);
  border-top: 3px solid var(--belt-blue-deep);
  border-radius: 3px;
  margin: 1.6rem 0 0;
  padding: 1.4rem 1.2rem 1rem;
  max-width: 720px;
  background-image:
    linear-gradient(to right, rgba(20,24,31,0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(20,24,31,0.05) 1px, transparent 1px);
  background-size: 24px 24px;
}
figure.plate.wide { max-width: none; }
.variant-card {
  background: var(--plate-bg);
  border: 1px solid var(--plate-line);
  border-top: 3px solid var(--belt-blue-deep);
  border-radius: 3px;
  padding: 1.2rem 1.2rem 1rem;
  margin-top: 1.6rem;
}
.variant-card h3 { font-size: 1rem; margin: 0 0 0.6rem; color: #14181F; }
.variant-card p { margin: 0 0 1rem; color: #33394A; font-size: 0.95rem; }
.variant-card ol, .variant-card ul { margin: 0 0 1rem; padding-left: 1.2rem; color: #33394A; font-size: 0.95rem; }
.variant-card li { color: #33394A; }
.variant-card strong { color: #14181F; }
.variant-card .physics h3 { color: #4B5160; }
.variant-card .physics-grid strong { color: var(--text); }
.variant-card .physics-grid span { color: var(--text-soft); }
.variant-card .yt-link.tech-name-trigger { color: #14181F; }
.variant-card .yt-link.tech-name-trigger:hover { color: var(--accent); }
figure.plate .mermaid { overflow-x: auto; display: block; }
figure.plate pre.mermaid { margin: 0; background: transparent; }
figcaption {
  margin-top: 0.9rem;
  padding-top: 0.7rem;
  border-top: 1px solid var(--plate-line);
  font-family: "Cascadia Code", "SF Mono", ui-monospace, Consolas, monospace;
  font-size: 0.76rem;
  color: #4B5160;
  letter-spacing: 0.01em;
}

.warmup-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(230px, 100%), 1fr)); gap: 1.4rem; }
.warmup-grid h3 { font-size: 0.95rem; margin-bottom: 0.6rem; color: #14181F; }
.warmup-grid h3 span { font-family: "Cascadia Code", monospace; font-size: 0.72rem; color: #4B5160; font-weight: 400; margin-left: 0.3rem; }
.warmup-grid ol { margin: 0; padding-left: 1.2rem; font-size: 0.85rem; color: #4B5160; display: flex; flex-direction: column; gap: 0.4rem; }
.warmup-grid ol em { color: #2A5C8A; font-style: normal; font-size: 0.78rem; }
.warmup-grid > div > p { font-size: 0.85rem; color: #4B5160; margin: 0 0 0.6rem; }
.chain {
  font-family: "Cascadia Code", "SF Mono", ui-monospace, Consolas, monospace;
  font-size: 0.85rem;
  background: #ffffff;
  border: 1px solid #C9C2AE;
  border-radius: 3px;
  padding: 0.65rem 0.85rem;
  color: #14181F !important;
}
.chain-note { font-size: 0.76rem !important; color: #8A8577 !important; margin-top: 0.5rem !important; }

.quad-diagram { width: 220px; height: auto; flex-shrink: 0; }
.quad-body { fill: none; stroke: #8A8577; stroke-width: 2; }
.quad-highlight { fill: #2A5C8A; opacity: 0.25; }
.quad-axis { stroke: #8A8577; stroke-width: 1.5; stroke-dasharray: 4 3; }
.quad-label { font-size: 12px; font-family: "Cascadia Code", monospace; fill: #4B5160; text-anchor: middle; }

.kesa-wrap { display: flex; align-items: center; gap: 1.4rem; flex-wrap: wrap; }
.kesa-diagram { width: 220px; height: auto; flex-shrink: 0; }
.kesa-legend { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.6rem; flex: 1; min-width: 220px; }
.kesa-legend li { font-size: 0.85rem; color: #4B5160; }
.kesa-legend strong { color: #14181F; }
.kd-defender { fill: none; stroke: #8A8577; stroke-width: 2.5; }
.kd-attacker { fill: #2A5C8A; opacity: 0.88; }
.kd-leg { fill: none; stroke: #2A5C8A; stroke-width: 4; stroke-linecap: round; }
.kd-arm { stroke: #B5502A; stroke-width: 3; stroke-linecap: round; }
.kd-arm-hand { fill: #B5502A; }
.kd-badge { fill: #163150; }
.kd-num { fill: #ffffff; font-size: 11px; font-family: "Cascadia Code", monospace; text-anchor: middle; }

.photo-row { display: flex; gap: 1rem; flex-wrap: wrap; }
.photo-item { flex: 1; min-width: 160px; display: flex; flex-direction: column; gap: 0.5rem; }
.photo-item.wide { min-width: 240px; }
.photo-item img {
  width: 100%;
  height: auto;
  border-radius: 3px;
  border: 1px solid #C9C2AE;
  display: block;
}
.zoomable { cursor: zoom-in; transition: opacity 0.15s ease; }
.zoomable:hover { opacity: 0.88; }
.photo-item span { font-size: 0.78rem; color: #4B5160; line-height: 1.4; }

figure.plate.proposal {
  border-style: dashed;
  border-color: #B5502A;
  border-top-color: #B5502A;
  position: relative;
  padding-top: 2.2rem;
}
.proposal-tag {
  position: absolute;
  top: 0.7rem;
  left: 1.2rem;
  font-family: "Cascadia Code", "SF Mono", ui-monospace, Consolas, monospace;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #B5502A;
  background: #F5E6DD;
  padding: 0.2rem 0.5rem;
  border-radius: 2px;
}

.yt-group {
  margin: 2rem 0 1.8rem;
  padding: 1.4rem 1.5rem 1.6rem;
  background: var(--belt-blue-tint);
  border: 1px solid var(--belt-blue);
  border-left: 4px solid var(--belt-blue-deep);
  border-radius: 6px;
  scroll-margin-top: 5rem;
}
.yt-group h3 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: var(--belt-blue-deep);
  display: flex;
  align-items: center;
  gap: 0.55rem;
}
.yt-group h3::before { content: "▶"; font-size: 1rem; }

.video-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  padding: 0.55rem 1rem;
  background: var(--belt-blue-tint);
  border: 1px solid var(--belt-blue);
  border-radius: 30px;
  font-size: 0.85rem;
  color: var(--belt-blue-deep);
  text-decoration: none;
  font-weight: 600;
}
.video-cta:hover { background: var(--belt-blue); color: #fff; }
.yt-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr)); gap: 1.2rem; }
.yt-facade {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #000;
  border-radius: 5px;
  overflow: hidden;
  cursor: pointer;
  border: 1px solid var(--line);
}
.yt-facade img { width: 100%; height: 100%; object-fit: cover; display: block; opacity: 0.82; }
.yt-facade:hover img { opacity: 0.95; }
.yt-play {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 64px; height: 64px;
  border-radius: 50%;
  background: rgba(20,24,31,0.65);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  pointer-events: none;
}
.yt-title {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 0.6rem 0.7rem;
  background: linear-gradient(transparent, rgba(0,0,0,0.88));
  color: #fff;
  font-size: 0.82rem;
  line-height: 1.35;
  pointer-events: none;
}
.yt-facade iframe { width: 100%; height: 100%; border: 0; display: block; }
.yt-facade:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.glossary-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr)); gap: 1.6rem; margin-top: 1rem; }
.glossary-grid h3 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-soft); margin-bottom: 0.7rem; }
.glossary-list { display: flex; flex-direction: column; gap: 0.7rem; }
.glossary-item dt { font-weight: 700; font-size: 0.88rem; color: var(--text); }
.glossary-item dd { margin: 0.15rem 0 0; font-size: 0.82rem; color: var(--text-soft); }

.physics { margin-top: 1.8rem; }
.physics h3 { font-size: 1rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-soft); margin-bottom: 0.9rem; }
.physics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(200px, 100%), 1fr));
  gap: 0.9rem;
}
.physics-grid > div {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0.85rem 0.95rem;
  display: flex; flex-direction: column; gap: 0.3rem;
}
.physics-grid strong { font-size: 0.92rem; }
.physics-grid span { font-size: 0.84rem; color: var(--text-soft); }

.principles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(210px, 100%), 1fr));
  gap: 1rem;
  margin-top: 1.6rem;
}
.pcard {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1.1rem 1.1rem 1.2rem;
  position: relative;
}
.pnum {
  font-family: "Cascadia Code", "SF Mono", ui-monospace, Consolas, monospace;
  font-size: 0.78rem;
  color: var(--accent);
  display: block;
  margin-bottom: 0.4rem;
}
.pcard h3 { font-size: 1.02rem; margin-bottom: 0.35rem; }
.pcard p { margin: 0; font-size: 0.88rem; color: var(--text-soft); }

.refs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(240px, 100%), 1fr));
  gap: 1rem;
  margin-top: 1.6rem;
}
.rcard {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-left: 3px solid var(--belt-blue);
  border-radius: 3px;
  padding: 1rem 1.1rem;
  display: flex; flex-direction: column; gap: 0.5rem;
}
.rcard.muted { border-left-color: var(--alert-rust); }
.rcard h3 { font-size: 0.95rem; }
.rcard p { margin: 0; font-size: 0.85rem; color: var(--text-soft); }
.rcard a {
  font-size: 0.8rem;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  width: fit-content;
}
.rcard a:hover { opacity: 0.75; }

.sys-nav {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(240px, 100%), 1fr));
  gap: 1rem;
  margin-top: 1.6rem;
}
.sys-card {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-left: 3px solid var(--belt-blue);
  border-radius: 3px;
  padding: 1rem 1.1rem;
  display: flex; flex-direction: column; gap: 0.5rem;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.sys-card:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(0,0,0,0.12); }
.sys-card h3 { font-size: 0.98rem; color: var(--text); }
.sys-card p { margin: 0; font-size: 0.85rem; color: var(--text-soft); }
.sys-card .sys-tag {
  font-family: "Cascadia Code", "SF Mono", ui-monospace, Consolas, monospace;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}
.sys-card.muted { border-left-color: var(--alert-rust); opacity: 0.75; }

.table-wrap { overflow-x: auto; margin: 1.4rem 0 0; }
.tech-table { border-collapse: collapse; width: 100%; min-width: 480px; font-size: 0.86rem; }
.tech-table caption {
  caption-side: top;
  text-align: left;
  font-family: "Arial Narrow", "Roboto Condensed", sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  padding-bottom: 0.5rem;
}
.tech-table th {
  text-align: left;
  font-family: "Cascadia Code", "SF Mono", ui-monospace, Consolas, monospace;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-soft);
  border-bottom: 1px solid var(--line);
  padding: 0.5rem 0.7rem;
}
.tech-table td {
  padding: 0.5rem 0.7rem;
  border-bottom: 1px solid var(--line);
  color: var(--text);
  vertical-align: top;
}
.tech-table tr:last-child td { border-bottom: none; }
.tech-table tr.core { background: var(--belt-blue-tint); }
.tech-table tr.core td { font-weight: 700; }
.tech-table tbody tr.tech-row-clickable { cursor: pointer; }
.tech-table tbody tr.tech-row-clickable:hover td { background: var(--card-bg); }
.tech-table tbody tr.tech-row-clickable.core:hover td { background: var(--belt-blue-tint); filter: brightness(1.08); }
.tech-table td.num { color: var(--text-soft); font-family: "Cascadia Code", monospace; font-size: 0.78rem; width: 2.2rem; }
.tech-table td.vid { width: 2.4rem; text-align: center; }
.yt-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px; height: 26px;
  border-radius: 50%;
  background: var(--belt-blue-tint);
  color: var(--belt-blue-deep);
  text-decoration: none;
  font-size: 0.7rem;
  cursor: pointer;
  border: 1px solid var(--line);
}
.yt-link:hover { background: var(--accent); color: #fff; }
.yt-link:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.yt-link.tech-name-trigger {
  display: inline;
  width: auto;
  height: auto;
  border-radius: 0;
  border: none;
  background: none;
  color: var(--text);
  font-size: inherit;
  text-decoration: none;
}
.yt-link.tech-name-trigger::after {
  content: "▶";
  margin-left: 0.4em;
  font-size: 0.7em;
  color: var(--accent);
}
.yt-link.tech-name-trigger:hover { background: none; color: var(--accent); text-decoration: underline; }
.tech-table tr.core .yt-link.tech-name-trigger { color: var(--text); }
.tech-table tr.core .yt-link.tech-name-trigger:hover { color: var(--accent); }
@media (max-width: 640px) {
  .tech-table { min-width: 0; }
  .tech-table th:last-child, .tech-table td.vid { display: none; }
  .tech-table th:nth-child(3), .tech-table td:nth-child(3) { display: none; }
  .tech-table th, .tech-table td { padding: 0.55rem 0.5rem; }
}

.section-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1.4rem 0 0;
  padding: 1rem;
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 4px;
}
.section-nav a {
  font-family: "Cascadia Code", "SF Mono", ui-monospace, Consolas, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.03em;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.section-nav a:hover { border-color: var(--accent); }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.glossario-page main { max-width: 1180px; }
.glossario-layout { display: flex; align-items: flex-start; gap: 2.2rem; }
.glossario-sidebar {
  flex: 0 0 220px;
  position: sticky;
  top: 7.8rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.glossario-sidebar .section-nav {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  margin: 0;
}
.glossario-sidebar .section-nav a {
  padding: 0.4rem 0.55rem;
  border-radius: 4px;
  border-bottom: none;
}
.glossario-sidebar .section-nav a:hover,
.glossario-sidebar .section-nav a.is-active {
  background: var(--belt-blue-tint);
  color: var(--belt-blue-deep);
}
.glossario-content { flex: 1; min-width: 0; }
.glossario-content .block { max-width: none; }

.search-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.4rem 0.65rem;
  font-size: 0.74rem;
  font-family: "Cascadia Code", "SF Mono", ui-monospace, Consolas, monospace;
  letter-spacing: 0.03em;
  color: var(--text-soft);
  cursor: pointer;
}
.search-trigger:hover { border-color: var(--accent); color: var(--accent); }
.search-trigger:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.search-trigger kbd {
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0 0.35rem;
  font-size: 0.68rem;
  font-family: inherit;
}

.search-palette {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: rgba(8,10,14,0.6);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 10vh 1.2rem 2rem;
}
.search-palette[hidden] { display: none; }
.search-palette-inner {
  width: 100%;
  max-width: 560px;
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 24px 60px rgba(0,0,0,0.4);
  display: flex;
  flex-direction: column;
  max-height: 68vh;
  overflow: hidden;
}
.search-palette-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--line);
  flex-shrink: 0;
}
.search-palette-icon { font-size: 1rem; color: var(--text-soft); }
#palette-search {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  font-size: 1rem;
  color: var(--text);
  outline: none;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
#palette-search::placeholder { color: var(--text-soft); }
.search-palette-header .lightbox-close {
  position: static;
  background: none;
  border: none;
  color: var(--text-soft);
  font-size: 0.85rem;
  cursor: pointer;
  padding: 0.2rem;
}
.search-palette-results { overflow-y: auto; padding: 0.4rem; }

.tech-suggestion {
  display: flex;
  flex-direction: column;
  width: 100%;
  text-align: left;
  gap: 0.1rem;
  background: none;
  border: none;
  border-radius: 3px;
  padding: 0.55rem 0.6rem;
  cursor: pointer;
  font-family: inherit;
}
.tech-suggestion:hover, .tech-suggestion.is-active { background: var(--belt-blue-tint); }
.tech-suggestion-jp { font-size: 0.9rem; color: var(--text); font-weight: 600; }
.tech-suggestion-west { font-size: 0.78rem; color: var(--text-soft); }
.tech-suggestions-empty { font-size: 0.85rem; color: var(--text-soft); padding: 0.6rem 0.6rem; }

.tech-table tbody tr.tech-highlight td {
  background: #F0DEA0;
  color: #2A2410;
}
.tech-table tbody tr.tech-highlight td:nth-child(2),
.tech-table tbody tr.tech-highlight td:nth-child(4) {
  text-decoration: underline;
  text-decoration-color: #8A6D1C;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}
.tech-table tbody tr.tech-highlight .yt-link:not(.tech-name-trigger) {
  background: #FBEFC0;
  color: #163150;
  border-color: #8A6D1C;
}
.tech-table tbody tr.tech-highlight .yt-link:not(.tech-name-trigger):hover { background: var(--accent); color: #fff; }
.tech-table tbody tr.tech-highlight .yt-link.tech-name-trigger { color: #2A2410; }
.tech-table tbody tr.tech-highlight .yt-link.tech-name-trigger:hover { color: var(--accent); }

@media (max-width: 900px) {
  .glossario-layout { flex-direction: column; gap: 0; }
  .glossario-sidebar { display: none; }
}

.planner-toolbar { display: flex; flex-wrap: wrap; gap: 0.7rem; margin: 1.4rem 0 1.6rem; }
.planner-layout { display: flex; gap: 1.6rem; align-items: flex-start; }
.planner-bank {
  flex: 0 0 240px;
  position: sticky;
  top: 6.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.planner-hint { font-size: 0.78rem; color: var(--text-soft); margin: 0 0 0.2rem; }
.planner-cards { display: flex; flex-direction: column; gap: 0.5rem; }
.planner-card {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-left: 3px solid var(--belt-blue);
  border-radius: 4px;
  padding: 0.55rem 0.7rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  user-select: none;
}
.planner-card:hover { border-color: var(--accent); }
.planner-card.is-selected {
  border-color: var(--accent);
  background: var(--belt-blue-tint);
  box-shadow: 0 0 0 2px var(--accent) inset;
}
.planner-card-tag {
  font-family: "Cascadia Code", "SF Mono", ui-monospace, Consolas, monospace;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
}
.planner-card-title { font-size: 0.86rem; font-weight: 600; color: var(--text); }
.planner-card-link {
  font-size: 0.72rem;
  color: var(--text-soft);
  text-decoration: none;
  align-self: flex-start;
}
.planner-card-link:hover { color: var(--accent); text-decoration: underline; }
.planner-card.muted { opacity: 0.55; cursor: not-allowed; }

.planner-weeks {
  flex: 1;
  min-width: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(220px, 100%), 1fr));
  gap: 1rem;
  align-content: start;
}
.planner-week {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  min-height: 120px;
}
.planner-week-header { display: flex; align-items: center; gap: 0.4rem; }
.planner-week-title {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: none;
  border-bottom: 1px dashed var(--line);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text);
  padding: 0.15rem 0;
  font-family: inherit;
}
.planner-week-title:focus { outline: none; border-bottom-color: var(--accent); }
.planner-week-remove {
  background: none;
  border: none;
  color: var(--text-soft);
  cursor: pointer;
  font-size: 0.8rem;
  flex-shrink: 0;
}
.planner-week-remove:hover { color: var(--alert-rust); }
.planner-week-drop {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  min-height: 60px;
  border: 2px dashed transparent;
  border-radius: 4px;
  padding: 0.3rem;
  transition: border-color 0.15s ease, background 0.15s ease;
  cursor: pointer;
}
.planner-week-drop.is-dragover { border-color: var(--accent); background: var(--belt-blue-tint); }
.planner-week-drop:empty::before {
  content: "clique num sistema e depois aqui";
  font-size: 0.72rem;
  color: var(--text-soft);
  font-style: italic;
  pointer-events: none;
}
.planner-chip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.4rem;
  background: var(--belt-blue-tint);
  border: 1px solid var(--belt-blue);
  border-radius: 4px;
  padding: 0.35rem 0.5rem;
  font-size: 0.8rem;
  color: var(--belt-blue-deep);
}
.planner-chip button {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  font-size: 0.75rem;
  opacity: 0.7;
  flex-shrink: 0;
}
.planner-chip button:hover { opacity: 1; }

@media (max-width: 760px) {
  .planner-layout { flex-direction: column; }
  .planner-bank { position: static; flex: none; width: 100%; }
}

#planner-print-view { display: none; }
#planner-print-view h2 { margin: 0 0 0.3rem; color: #14181F; }
#planner-print-view p { margin: 0 0 1rem; color: #4B5160; font-size: 0.85rem; }
#planner-print-view table { width: 100%; border-collapse: collapse; }
#planner-print-view th, #planner-print-view td {
  border: 1px solid #999;
  padding: 0.55rem 0.7rem;
  text-align: left;
  font-size: 0.92rem;
  vertical-align: top;
  color: #14181F;
}
#planner-print-view th { background: #E4EDF5; }
#planner-print-view tr:nth-child(even) td { background: #F7F4EC; }

@media print {
  body * { visibility: hidden; }
  #planner-print-view, #planner-print-view * { visibility: visible; }
  #planner-print-view {
    display: block !important;
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
  }
}

footer {
  max-width: 980px;
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
  font-size: 0.82rem;
  color: var(--text-soft);
  border-top: 1px solid var(--line);
}

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