/* ============================================================
   KITESURF — a concept landing page for Cloudflare's agent-first
   stateless browser. Art direction: wind over water. Deep-water
   ink, foam type, hairline instrument chrome, one orange kite.
   ============================================================ */

/* ---------- tokens ---------- */
:root {
  --bg-0: #04070d;
  --bg-1: #060c15;
  --bg-2: #0a1523;
  --bg-3: #0e1c2d;

  --foam: #eaf3f9;
  --mist: #a9c0d0;
  --fog: #75909f;

  --cyan: #7fdcec;
  --cyan-bright: #b8f1fb;
  --cyan-dim: rgba(127, 220, 236, 0.55);

  --orange: #f6821f;
  --orange-bright: #ffa94d;
  --orange-soft: rgba(246, 130, 31, 0.14);

  --slate: #55708a;
  --amber: #e6b25a;

  --hair: rgba(151, 199, 222, 0.16);
  --hair-strong: rgba(151, 199, 222, 0.32);

  --paper: #eff5f9;
  --paper-2: #e3edf3;
  --ink-on-paper: #0b1b27;
  --muted-on-paper: #48626f;
  --hair-on-paper: rgba(11, 27, 39, 0.16);

  --wrap: 1180px;
  --pad: clamp(20px, 5vw, 72px);
  --sec-gap: clamp(6rem, 11vw, 10.5rem);

  --font-sans: "Instrument Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-serif: "Instrument Serif", "Iowan Old Style", Georgia, serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --ease-wind: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-lift: cubic-bezier(0.32, 1.5, 0.56, 1);
  --dur-1: 0.55s;
  --dur-2: 0.95s;

  --nav-h: 68px;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--bg-0);
  color: var(--foam);
  font-family: var(--font-sans);
  font-size: clamp(1.02rem, 0.42vw + 0.93rem, 1.17rem);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
img, svg, canvas { display: block; max-width: 100%; }
h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
::selection { background: rgba(246, 130, 31, 0.35); color: #fff; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 2px;
}
.skip-link {
  position: fixed; top: -60px; left: 16px; z-index: 200;
  background: var(--orange); color: #160a01;
  font-family: var(--font-mono); font-size: 0.8rem;
  padding: 0.6rem 1rem; border-radius: 4px;
  transition: top 0.25s var(--ease-wind);
}
.skip-link:focus { top: 12px; }

/* ---------- type utilities ---------- */
.kicker {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
  display: flex;
  align-items: center;
  gap: 0.9em;
}
.kicker::before {
  content: "";
  width: 34px; height: 1px;
  background: var(--cyan-dim);
  flex: none;
}
.kicker .idx { color: var(--fog); }

.display {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.04;
  letter-spacing: -0.015em;
  text-wrap: balance;
}
.display em {
  font-style: italic;
  color: var(--cyan-bright);
}
.h1 { font-size: clamp(3rem, 8.4vw, 6.9rem); }
.h2 { font-size: clamp(2.1rem, 4.8vw, 3.7rem); }
.h3 { font-size: clamp(1.3rem, 2.2vw, 1.7rem); line-height: 1.25; font-weight: 500; }

.lede {
  color: var(--mist);
  max-width: 62ch;
  font-size: clamp(1.05rem, 0.5vw + 0.95rem, 1.25rem);
}
.note {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  line-height: 1.8;
  letter-spacing: 0.02em;
  color: var(--fog);
}
.note strong { color: var(--mist); font-weight: 600; }

/* ---------- layout ---------- */
.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: var(--pad); }
section { position: relative; }
.section-pad { padding-block: clamp(4.5rem, 8vw, 7.5rem); }
.sec-head { display: grid; gap: 1.3rem; max-width: 780px; margin-bottom: clamp(2.5rem, 5vw, 4.5rem); }

/* corner-tick instrument frame */
.frame {
  position: relative;
  border: 1px solid var(--hair);
  background:
    linear-gradient(180deg, rgba(10, 21, 35, 0.5), rgba(6, 12, 21, 0.24));
}
.frame::before, .frame::after {
  content: "";
  position: absolute;
  width: 14px; height: 14px;
  pointer-events: none;
}
.frame::before {
  top: -1px; left: -1px;
  border-top: 1px solid var(--hair-strong);
  border-left: 1px solid var(--hair-strong);
}
.frame::after {
  bottom: -1px; right: -1px;
  border-bottom: 1px solid var(--hair-strong);
  border-right: 1px solid var(--hair-strong);
}

.fig-tag {
  position: absolute;
  top: 0.8rem; left: 1rem; right: 1rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fog);
  pointer-events: none;
}

/* ---------- reveal system (JS-gated) ---------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.9s var(--ease-wind),
    transform 0.9s var(--ease-wind);
  transition-delay: var(--d, 0s);
  will-change: opacity, transform;
}
html.js [data-reveal="left"]  { transform: translateX(-36px); }
html.js [data-reveal="right"] { transform: translateX(36px); }
html.js [data-reveal="fade"]  { transform: none; }
html.js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ---------- buttons & links ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-weight: 600;
  font-size: 0.98rem;
  letter-spacing: 0.01em;
  padding: 0.85em 1.5em;
  border-radius: 6px;
  text-decoration: none;
  border: 1px solid transparent;
  transition:
    transform 0.35s var(--ease-lift),
    box-shadow 0.35s var(--ease-wind),
    background-color 0.35s var(--ease-wind),
    border-color 0.35s var(--ease-wind),
    color 0.35s var(--ease-wind);
}
.btn .arr { transition: transform 0.35s var(--ease-lift); }
.btn:hover .arr { transform: translateX(4px); }
.btn--primary {
  background: var(--orange);
  color: #170b01;
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 34px -14px rgba(246, 130, 31, 0.55);
}
.btn--primary:active { transform: translateY(0); }
.btn--ghost {
  border-color: var(--hair-strong);
  color: var(--foam);
}
.btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan-bright);
  transform: translateY(-2px);
}

.lnk {
  color: var(--cyan-bright);
  text-decoration: none;
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 100% 1px;
  background-repeat: no-repeat;
  background-position: 0 100%;
  padding-bottom: 1px;
  transition: background-size 0.35s var(--ease-wind), color 0.3s;
}
.lnk:hover { background-size: 0% 1px; color: var(--foam); }

/* ============================================================
   HEADER
   ============================================================ */
.site-head {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background-color 0.4s, border-color 0.4s, backdrop-filter 0.4s;
  border-bottom: 1px solid transparent;
}
.site-head.is-solid {
  background: rgba(4, 7, 13, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--hair);
}
.site-head .wrap {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  font-family: var(--font-serif);
  font-size: 1.42rem;
  letter-spacing: 0.01em;
  color: var(--foam);
}
.wordmark .kite-glyph { transition: transform 0.6s var(--ease-lift); }
.wordmark:hover .kite-glyph { transform: translateY(-3px) rotate(-6deg); }
.site-nav { margin-left: auto; display: none; align-items: center; gap: 2rem; }
.site-nav a {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--mist);
  padding: 0.4em 0;
  position: relative;
  transition: color 0.3s;
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 100%; height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease-wind);
}
.site-nav a:hover, .site-nav a[aria-current="true"] { color: var(--cyan-bright); }
.site-nav a:hover::after, .site-nav a[aria-current="true"]::after { transform: scaleX(1); }
.head-cta { display: none; }
.head-cta .btn { padding: 0.62em 1.15em; font-size: 0.88rem; }

.menu-btn {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
  padding: 0.6em 0.9em;
  border: 1px solid var(--hair);
  border-radius: 5px;
}
.menu-btn:hover { color: var(--cyan-bright); border-color: var(--hair-strong); }
.menu-btn .bars { display: inline-grid; gap: 4px; }
.menu-btn .bars i { width: 16px; height: 1.5px; background: currentColor; transition: transform 0.35s var(--ease-wind), opacity 0.3s; }
.menu-btn[aria-expanded="true"] .bars i:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.menu-btn[aria-expanded="true"] .bars i:nth-child(2) { opacity: 0; }
.menu-btn[aria-expanded="true"] .bars i:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: var(--nav-h) 0 auto 0;
  z-index: 99;
  background: rgba(4, 7, 13, 0.97);
  border-bottom: 1px solid var(--hair);
  padding: 1.2rem var(--pad) 2rem;
  display: grid;
  gap: 0.2rem;
  transform: translateY(-12px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s var(--ease-wind), transform 0.35s var(--ease-wind), visibility 0s 0.35s;
}
.mobile-menu.is-open { opacity: 1; transform: none; visibility: visible; transition-delay: 0s; }
.mobile-menu a {
  text-decoration: none;
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--foam);
  padding: 0.55em 0.2em;
  border-bottom: 1px solid var(--hair);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.mobile-menu a .n { font-family: var(--font-mono); font-size: 0.7rem; color: var(--fog); letter-spacing: 0.2em; }
.mobile-menu a:hover { color: var(--cyan-bright); }

@media (min-width: 1024px) {
  .site-nav { display: flex; }
  .head-cta { display: block; }
  .menu-btn, .mobile-menu { display: none; }
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  padding-top: calc(var(--nav-h) + clamp(3rem, 9vh, 7rem));
  overflow: clip;
}
#wind-canvas {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.hero-windlines {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}
.hero-windlines path {
  fill: none;
  stroke: var(--cyan-dim);
  stroke-width: 1;
  opacity: 0.35;
}
.hero-windlines .wl-2 { opacity: 0.2; }
.hero-windlines .wl-3 { opacity: 0.12; }
.hero-kite {
  offset-path: path("M -60 140 C 220 40, 560 10, 980 96 C 1260 154, 1560 120, 1900 30");
  offset-rotate: 0deg;
  animation: kite-drift 26s linear infinite;
}
@keyframes kite-drift {
  0%   { offset-distance: 0%; }
  100% { offset-distance: 100%; }
}
.hero-kite svg { overflow: visible; }
.hero-kite .body { animation: kite-bob 5.2s ease-in-out infinite; transform-origin: 50% 60%; }
@keyframes kite-bob {
  0%, 100% { transform: translateY(0) rotate(2deg); }
  50% { transform: translateY(-12px) rotate(-3deg); }
}
@media (prefers-reduced-motion: reduce) {
  .hero-kite { animation: none; offset-distance: 34%; }
  .hero-kite .body { animation: none; }
}

.hero-inner { display: grid; gap: 2.2rem; }
.hero-title { max-width: 13ch; }
.hero-lede { max-width: 56ch; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 0.9rem; align-items: center; }

.hero-meta {
  margin-top: auto;
  padding-block: 1.6rem 2.2rem;
}
.hero-meta .strip {
  border-top: 1px solid var(--hair);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--hair);
}
.hero-meta .cell {
  background: var(--bg-0);
  padding: 1.05rem 1.1rem 1rem;
  display: grid;
  gap: 0.25rem;
  transition: background-color 0.35s;
}
.hero-meta .cell:hover { background: var(--bg-1); }
.hero-meta .cell b {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(1rem, 2.4vw, 1.35rem);
  color: var(--foam);
  letter-spacing: 0.01em;
}
.hero-meta .cell span {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fog);
}
.hero-meta .cell.hot b { color: var(--orange-bright); }
@media (min-width: 860px) {
  .hero-meta .strip { grid-template-columns: repeat(4, 1fr); }
}

.scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 110px;
  transform: translateX(-50%);
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--fog);
  transition: opacity 0.5s;
}
@media (min-width: 1024px) { .scroll-cue { display: flex; } }
.scroll-cue .line {
  width: 1px; height: 44px;
  background: linear-gradient(var(--cyan), transparent);
  overflow: hidden;
  position: relative;
}
.scroll-cue .line::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--bg-0);
  animation: cue-fall 2.2s var(--ease-wind) infinite;
}
@keyframes cue-fall {
  0% { transform: translateY(-100%); }
  60%, 100% { transform: translateY(100%); }
}
@media (prefers-reduced-motion: reduce) { .scroll-cue .line::after { animation: none; } }

/* ============================================================
   CONCEPT — the trade
   ============================================================ */
.concept-lede-quote {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3.2vw, 2.5rem);
  line-height: 1.28;
  color: var(--foam);
  max-width: 24ch;
}
.concept-lede-quote em { font-style: italic; color: var(--cyan-bright); }

.trade {
  display: grid;
  gap: 1px;
  background: var(--hair);
  border-block: 1px solid var(--hair);
}
@media (min-width: 920px) {
  .trade { grid-template-columns: 1.15fr 0.85fr; border: 1px solid var(--hair); }
}
.trade-col { background: var(--bg-0); padding: clamp(1.6rem, 3.5vw, 3rem); }
.trade-col h3 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-bottom: 1.6rem;
}
.trade-keeps h3 { color: var(--cyan); }
.trade-drops h3 { color: var(--fog); }

.trade-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.4rem 1.1rem;
  padding: 0.85rem 0.4rem;
  border-top: 1px solid var(--hair);
  transition: background-color 0.3s, padding-left 0.35s var(--ease-wind);
}
.trade-item:hover { background: rgba(127, 220, 236, 0.04); padding-left: 0.9rem; }
.trade-item .term {
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--foam);
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
}
.trade-item .term .tick {
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}
.trade-item .why { grid-column: 2; color: var(--fog); font-size: 0.92rem; line-height: 1.55; }
@media (min-width: 640px) { .trade-item .why { grid-column: 1 / -1; padding-left: 0; } }

.trade-drops .trade-item { position: relative; }
.trade-drops .trade-item .term {
  color: var(--mist);
  text-decoration: line-through;
  text-decoration-color: rgba(246, 130, 31, 0.6);
  text-decoration-thickness: 1.5px;
}
.trade-drops .trade-item .tag {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fog);
  border: 1px solid var(--hair);
  padding: 0.25em 0.7em;
  border-radius: 99px;
  transition: color 0.35s, border-color 0.35s, transform 0.5s var(--ease-lift);
}
.trade-drops .trade-item:hover .tag {
  color: var(--orange-bright);
  border-color: rgba(246, 130, 31, 0.5);
  transform: translateY(-2px);
}
.trade-drops .trade-item:hover { background: rgba(246, 130, 31, 0.03); }
.trade-drops .trade-item .why { font-size: 0.9rem; }

/* ============================================================
   LIFECYCLE — ephemeral engine
   ============================================================ */
.lifecycle-grid {
  display: grid;
  gap: clamp(2.5rem, 5vw, 4.5rem);
}
@media (min-width: 1024px) {
  .lifecycle-grid { grid-template-columns: 1.25fr 0.75fr; align-items: start; }
}
.stage-shell { padding-top: 3.2rem; }
#lifecycle-stage { width: 100%; height: auto; }
#lifecycle-stage .axis { stroke: var(--hair-strong); stroke-width: 1; }
#lifecycle-stage .gridline { stroke: var(--hair); stroke-width: 1; stroke-dasharray: 2 6; }
#lifecycle-stage text {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  fill: var(--fog);
  text-transform: uppercase;
}
#lifecycle-stage .phase-zone rect { fill: rgba(127, 220, 236, 0.045); }
#lifecycle-stage .phase-zone line { stroke: var(--hair); }

.phases {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--hair);
  margin-top: 1.4rem;
}
.phase {
  padding: 1.1rem 0.9rem 0.4rem;
  border-left: 1px solid var(--hair);
  display: grid;
  gap: 0.35rem;
}
.phase:first-child { border-left: 0; padding-left: 0.2rem; }
.phase b {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fog);
  transition: color 0.3s;
}
.phase span { font-size: 0.82rem; color: var(--fog); line-height: 1.5; }
.phase .t { color: var(--fog); font-family: var(--font-mono); font-size: 0.66rem; }
.phase.is-active b { color: var(--cyan-bright); }
.phase.is-active span { color: var(--mist); }

.stage-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 1.1rem;
}
.replay-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55em;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
  border: 1px solid var(--hair);
  border-radius: 5px;
  padding: 0.55em 1em;
  transition: color 0.3s, border-color 0.3s, transform 0.35s var(--ease-lift);
}
.replay-btn:hover { color: var(--cyan-bright); border-color: var(--hair-strong); transform: translateY(-1px); }
.engine-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--fog);
  text-transform: uppercase;
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
}
.engine-count b {
  font-size: 1.6rem;
  color: var(--orange-bright);
  font-weight: 600;
  transition: color 0.4s;
}
.engine-count b.zero { color: var(--fog); }

.lifecycle-copy { display: grid; gap: 1.6rem; align-content: start; }
.principle {
  border-left: 1px solid var(--hair-strong);
  padding-left: 1.3rem;
  display: grid;
  gap: 0.45rem;
}
.principle h4 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}
.principle p { color: var(--mist); font-size: 0.96rem; line-height: 1.6; }

.arch-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 0.4rem;
}
.chip {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--mist);
  border: 1px solid var(--hair);
  border-radius: 4px;
  padding: 0.45em 0.8em;
  transition: color 0.3s, border-color 0.3s, transform 0.4s var(--ease-lift);
}
.chip:hover { color: var(--cyan-bright); border-color: var(--hair-strong); transform: translateY(-2px); }

/* ============================================================
   BENCHMARKS
   ============================================================ */
.bench-headrow {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 2.2rem;
}
.big-ratio {
  display: grid;
  gap: 0.3rem;
}
.big-ratio .num {
  font-family: var(--font-serif);
  font-size: clamp(3.4rem, 9vw, 7rem);
  line-height: 0.95;
  color: var(--orange-bright);
  letter-spacing: -0.02em;
}
.big-ratio .num sub {
  font-family: var(--font-mono);
  font-size: 0.22em;
  color: var(--fog);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  vertical-align: baseline;
}
.big-ratio .lbl {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fog);
}

.task-tabs { display: inline-flex; border: 1px solid var(--hair); border-radius: 6px; overflow: hidden; }
.task-tabs .tab {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fog);
  padding: 0.75em 1.3em;
  position: relative;
  transition: color 0.3s, background-color 0.3s;
}
.task-tabs .tab + .tab { border-left: 1px solid var(--hair); }
.task-tabs .tab:hover { color: var(--mist); }
.task-tabs .tab[aria-selected="true"] {
  color: #170b01;
  background: var(--cyan);
  font-weight: 600;
}
.task-tabs .tab:focus-visible { outline-offset: -3px; }

.bench-panel { padding: clamp(1.8rem, 4vw, 3.2rem); }
.metric-group { padding-block: 1.9rem; border-top: 1px solid var(--hair); }
.metric-group:first-of-type { border-top: 0; padding-top: 0.6rem; }
.metric-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem 1rem;
  margin-bottom: 1.15rem;
}
.metric-head h4 {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--foam);
}
.metric-head .unit { font-family: var(--font-mono); font-size: 0.68rem; color: var(--fog); letter-spacing: 0.1em; }
.ratio-chip {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  padding: 0.35em 0.8em;
  border-radius: 99px;
  border: 1px solid rgba(246, 130, 31, 0.45);
  color: var(--orange-bright);
  background: var(--orange-soft);
  white-space: nowrap;
}
.ratio-chip.cold { border-color: var(--hair-strong); color: var(--fog); background: transparent; }

.bar-row { display: grid; grid-template-columns: 6.4rem 1fr; gap: 0.5rem 1rem; align-items: center; padding: 0.5rem 0; }
.bar-row .who {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
  display: flex;
  align-items: center;
  gap: 0.55rem;
}
.bar-row .swatch { width: 9px; height: 9px; border-radius: 1px; flex: none; }
.bar-row.ks .swatch { background: var(--orange); }
.bar-row.cr .swatch { background: var(--slate); }
.bar-track {
  position: relative;
  height: 30px;
  background: rgba(151, 199, 222, 0.06);
  border: 1px solid var(--hair);
  border-radius: 3px;
  overflow: hidden;
}
.bar-fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--w, 0%);
  transform-origin: left;
  transition: width 1.1s var(--ease-wind);
}
.bar-row.ks .bar-fill { background: linear-gradient(90deg, rgba(246, 130, 31, 0.55), rgba(246, 130, 31, 0.9)); }
.bar-row.cr .bar-fill { background: rgba(85, 112, 138, 0.45); }
.bar-val {
  position: absolute;
  right: 8px; top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--foam);
  white-space: nowrap;
  mix-blend-mode: difference;
}
.metric-note { font-size: 0.86rem; color: var(--fog); margin-top: 0.7rem; line-height: 1.55; max-width: 60ch; }
.metric-note b { color: var(--mist); font-weight: 600; }

/* runway (task slider) */
.runway { margin-top: 2.6rem; padding: clamp(1.4rem, 3vw, 2.2rem); }
.runway-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.8rem;
  margin-bottom: 1.4rem;
}
.runway-head h4 {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}
.runway input[type="range"] {
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  height: 26px;
  background: transparent;
  cursor: pointer;
}
.runway input[type="range"]:focus-visible { outline-offset: 6px; }
.runway input[type="range"]::-webkit-slider-runnable-track {
  height: 2px;
  background: linear-gradient(90deg, var(--cyan) var(--fill, 10%), var(--hair) var(--fill, 10%));
}
.runway input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px;
  margin-top: -8px;
  border-radius: 2px;
  background: var(--orange);
  border: 1px solid #ffd9b3;
  box-shadow: 0 0 0 5px rgba(246, 130, 31, 0.18);
  transition: transform 0.2s var(--ease-lift), box-shadow 0.2s;
}
.runway input[type="range"]:hover::-webkit-slider-thumb { transform: scale(1.15); }
.runway input[type="range"]::-moz-range-track {
  height: 2px;
  background: var(--hair);
}
.runway input[type="range"]::-moz-range-progress { height: 2px; background: var(--cyan); }
.runway input[type="range"]::-moz-range-thumb {
  width: 16px; height: 16px; border-radius: 2px;
  background: var(--orange); border: 1px solid #ffd9b3;
  box-shadow: 0 0 0 5px rgba(246, 130, 31, 0.18);
}
.runway-scale {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  color: var(--fog);
  margin-top: 0.35rem;
}
.runway-reads {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
  margin-top: 1.5rem;
}
.read-cell { background: var(--bg-0); padding: 1.1rem 1.2rem; display: grid; gap: 0.3rem; }
.read-cell .k {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fog);
}
.read-cell .v {
  font-family: var(--font-mono);
  font-size: clamp(1.15rem, 2.6vw, 1.7rem);
  font-weight: 600;
  color: var(--foam);
}
.read-cell.ks .v { color: var(--orange-bright); }
.read-cell .d { font-size: 0.78rem; color: var(--fog); font-family: var(--font-mono); }
@media (min-width: 760px) { .runway-reads { grid-template-columns: repeat(4, 1fr); } }

/* ============================================================
   STANDARDS — instrument panel
   ============================================================ */
.wpt-hero { display: flex; flex-wrap: wrap; align-items: baseline; gap: 1.6rem; margin-bottom: 2.6rem; }
.wpt-count { display: grid; }
.wpt-count .num {
  font-family: var(--font-serif);
  font-size: clamp(3.2rem, 8vw, 6.4rem);
  line-height: 1;
  color: var(--foam);
  letter-spacing: -0.02em;
  font-variant-numeric: lining-nums;
}
.wpt-count .num sup {
  font-family: var(--font-mono);
  font-size: 0.3em;
  color: var(--orange-bright);
  top: -0.9em;
  position: relative;
}
.wpt-count .lbl { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--fog); margin-top: 0.4rem; }

.gauge-panel { padding: clamp(1.6rem, 3.5vw, 3rem); }
.gauges {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1rem, 2.5vw, 1.8rem);
}
@media (min-width: 700px) { .gauges { grid-template-columns: repeat(4, 1fr); } }
.gauge {
  position: relative;
  text-align: center;
  padding: 1rem 0.4rem 0.8rem;
  border-radius: 6px;
  transition: background-color 0.3s, transform 0.4s var(--ease-lift);
  cursor: default;
}
.gauge:hover, .gauge:focus-visible {
  background: rgba(127, 220, 236, 0.05);
  transform: translateY(-3px);
}
.gauge svg { width: 100%; height: auto; margin-inline: auto; }
.gauge .g-track { stroke: rgba(151, 199, 222, 0.14); }
.gauge .g-zone { stroke: rgba(151, 199, 222, 0.1); }
.gauge .g-arc { stroke: var(--cyan); transition: stroke 0.4s; }
.gauge.is-low .g-arc { stroke: var(--amber); }
.gauge .g-needle { stroke: var(--foam); }
.gauge .g-hub { fill: var(--foam); }
.gauge .g-num {
  font-family: var(--font-mono);
  font-size: 21px;
  font-weight: 600;
  fill: var(--foam);
  letter-spacing: 0.02em;
}
.gauge .g-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  fill: var(--fog);
  text-transform: uppercase;
}
.gauge-detail {
  min-height: 3.2em;
  margin-top: 1.6rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--hair);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  line-height: 1.7;
  color: var(--mist);
  letter-spacing: 0.02em;
}
.gauge-detail b { color: var(--cyan-bright); font-weight: 600; }

/* field log */
.fieldlog { margin-top: 2.8rem; }
.fieldlog h4 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--fog);
  margin-bottom: 0.9rem;
  display: flex;
  gap: 0.9em;
  align-items: center;
}
.fieldlog h4::after { content: ""; height: 1px; flex: 1; background: var(--hair); }
.log-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.4rem 1.2rem;
  padding: 0.8rem 0.5rem;
  border-bottom: 1px solid var(--hair);
  transition: background-color 0.3s, padding-left 0.35s var(--ease-wind);
}
.log-row:hover { background: rgba(127, 220, 236, 0.04); padding-left: 1rem; }
.log-row .site { font-family: var(--font-mono); font-size: 0.86rem; color: var(--foam); letter-spacing: 0.01em; }
.log-row .site span { color: var(--fog); }
.log-row .status {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  border: 1px solid rgba(127, 220, 236, 0.35);
  border-radius: 3px;
  padding: 0.3em 0.7em;
  white-space: nowrap;
  align-self: center;
}
.log-row .status.fun { color: var(--orange-bright); border-color: rgba(246, 130, 31, 0.45); }
.log-row .status.part { color: var(--mist); border-color: var(--hair-strong); }
.log-row .note-line { grid-column: 1 / -1; font-size: 0.8rem; color: var(--fog); }

/* ============================================================
   HONESTY — daylight
   ============================================================ */
.daylight {
  background:
    radial-gradient(120% 90% at 80% -10%, rgba(127, 220, 236, 0.16), transparent 55%),
    linear-gradient(180deg, var(--paper) 0%, #e9f2f7 100%);
  color: var(--ink-on-paper);
}
.daylight .kicker { color: #9a4d08; }
.daylight .kicker::before { background: rgba(154, 77, 8, 0.5); }
.daylight .kicker .idx { color: #526b7a; }
.daylight .display em { color: #0e5e74; }
.daylight .lede { color: var(--muted-on-paper); }
.daylight .note { color: #465d6d; }
.daylight .note strong { color: #35505f; }

.limit-list { border-top: 1px solid var(--hair-on-paper); }
.limit {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.3rem 2rem;
  padding: clamp(1.3rem, 2.6vw, 2rem) 0.5rem;
  border-bottom: 1px solid var(--hair-on-paper);
  transition: background-color 0.3s, padding-left 0.4s var(--ease-wind);
}
.limit:hover { background: rgba(11, 27, 39, 0.035); padding-left: 1.2rem; }
.limit .no {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: #526b7a;
  padding-top: 0.45rem;
}
.limit h3 {
  font-family: var(--font-serif);
  font-size: clamp(1.35rem, 2.6vw, 1.9rem);
  font-weight: 400;
  line-height: 1.2;
}
.limit p { grid-column: 2; color: var(--muted-on-paper); font-size: 0.98rem; line-height: 1.62; max-width: 58ch; }
.limit p b { color: var(--ink-on-paper); font-weight: 600; }
@media (max-width: 620px) {
  .limit { grid-template-columns: 1fr; }
  .limit p { grid-column: 1; }
  .limit .no { padding-top: 0; }
}

.daylight-close {
  margin-top: 2.6rem;
  display: grid;
  gap: 1rem;
  max-width: 70ch;
}
.daylight-close .word {
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 2.6vw, 1.9rem);
  line-height: 1.35;
  color: var(--ink-on-paper);
}
.daylight-close .word em { font-style: italic; color: #0e5e74; }

/* ============================================================
   CODE
   ============================================================ */
.code-tabs { display: flex; gap: 0.55rem; flex-wrap: wrap; margin-bottom: 1.6rem; }
.code-tabs .tab {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fog);
  border: 1px solid var(--hair);
  border-radius: 5px;
  padding: 0.7em 1.1em;
  transition: color 0.3s, border-color 0.3s, background-color 0.3s, transform 0.35s var(--ease-lift);
}
.code-tabs .tab:hover { color: var(--mist); transform: translateY(-1px); }
.code-tabs .tab[aria-selected="true"] {
  color: var(--cyan-bright);
  border-color: rgba(127, 220, 236, 0.55);
  background: rgba(127, 220, 236, 0.07);
}
.code-tabs .tab:focus-visible { outline-offset: 3px; }

.code-panel { padding-top: 4.4rem; }
.code-panel[hidden] { display: none; }
.code-head {
  position: absolute;
  top: 0.9rem; left: 1rem; right: 1rem;
  display: flex;
  align-items: center;
  gap: 0.9rem;
}
.code-head .method {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--orange-bright);
  border: 1px solid rgba(246, 130, 31, 0.5);
  border-radius: 4px;
  padding: 0.3em 0.7em;
}
.code-head .path {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--mist);
  letter-spacing: 0.04em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.copy-btn {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
  border: 1px solid var(--hair);
  border-radius: 4px;
  padding: 0.45em 0.85em;
  flex: none;
  transition: color 0.3s, border-color 0.3s, background-color 0.3s;
}
.copy-btn:hover { color: var(--cyan-bright); border-color: var(--hair-strong); }
.copy-btn.is-copied {
  color: #062018;
  background: var(--cyan);
  border-color: var(--cyan);
}

pre.code {
  margin: 0;
  padding: 1.4rem 1.5rem 1.6rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: clamp(0.78rem, 0.55vw + 0.66rem, 0.9rem);
  line-height: 1.85;
  color: #c8dce8;
  tab-size: 2;
}
pre.code code { white-space: pre; }
.tk-c { color: #5c7387; font-style: italic; }
.tk-k { color: var(--cyan-bright); }
.tk-s { color: #f2c091; }
.tk-n { color: #ffcf9e; }
.tk-f { color: #d9ecf5; }
.tk-p { color: #7d95a7; }
.tk-v { color: #ffd9b0; }
.tk-u { color: #9fe3f0; }
.tk-switch {
  color: var(--orange-bright);
  background: var(--orange-soft);
  border-radius: 3px;
  padding: 0.08em 0.3em;
  margin: -0.08em -0.3em;
  box-shadow: inset 0 -1px 0 rgba(246, 130, 31, 0.6);
}
.code-caption {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 2rem;
  margin-top: 1.2rem;
}
.code-caption p { font-size: 0.9rem; color: var(--fog); max-width: 72ch; line-height: 1.6; }
.code-caption p b { color: var(--mist); font-weight: 600; }
.code-caption p .mono { font-family: var(--font-mono); font-size: 0.82em; color: var(--orange-bright); }

/* ============================================================
   CTA + FOOTER
   ============================================================ */
.cta { text-align: left; overflow: clip; position: relative; }
.cta .display { max-width: 16ch; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2.4rem; }
.cta-note { margin-top: 1.6rem; font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--fog); display: flex; gap: 0.8em; align-items: center; }
.cta-note::before { content: ""; width: 22px; height: 1px; background: var(--orange); }
.cta-kite { position: absolute; right: clamp(-60px, -2vw, 0px); top: 50%; transform: translateY(-50%); opacity: 0.9; pointer-events: none; }
@media (max-width: 860px) { .cta-kite { display: none; } }

.site-foot { border-top: 1px solid var(--hair); padding-block: 3rem 2.4rem; }
.foot-grid { display: grid; gap: 2.2rem; }
@media (min-width: 860px) { .foot-grid { grid-template-columns: 1fr auto; align-items: end; } }
.foot-links { display: flex; flex-wrap: wrap; gap: 0.6rem 2rem; }
.foot-links a {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.3s;
}
.foot-links a:hover { color: var(--cyan-bright); }
.foot-fine { margin-top: 2rem; display: grid; gap: 0.5rem; }

/* wind divider between sections */
.windline { margin: 0 auto; max-width: var(--wrap); padding-inline: var(--pad); }
.windline svg { width: 100%; height: 34px; overflow: visible; }
.windline path { fill: none; stroke: var(--hair-strong); stroke-width: 1; }
.windline circle { fill: var(--orange); }
.windline .dot { fill: var(--cyan); opacity: 0.6; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001s !important; animation-iteration-count: 1 !important; transition-duration: 0.001s !important; }
}