/* ==========================================================================
   YITONG craft page — pinned WebGL assembly + QC card stack
   ========================================================================== */

.page-craft { --cr-seg: 92vh; --cr-x: max(var(--pad), calc((100vw - var(--container, 1240px)) / 2)); }

/* ---------- pinned stage ---------- */
.cr-scroller {
  position: relative;
  z-index: 2;
  height: calc(100vh + 8 * var(--cr-seg));
}
.cr-anchor {
  position: absolute;
  left: 0;
  top: calc(var(--k) * var(--cr-seg));
  width: 1px;
  height: 1px;
  pointer-events: none;
  scroll-margin-top: 0;
}
.cr-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100svh;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(90% 70% at 66% 46%, rgba(40, 72, 130, .34) 0%, rgba(12, 20, 36, .1) 48%, rgba(5, 7, 11, 0) 70%),
    linear-gradient(180deg, #06080d 0%, #070a11 52%, #05070b 100%);
}
#crCanvas {
  position: absolute;
  inset: 0;
  z-index: 0;
  display: block;
  width: 100%;
  height: 100%;
  outline: none;
  touch-action: pan-y;
  cursor: grab;
  opacity: 0;
  transition: opacity 1.2s ease;
}
#crCanvas.is-ready { opacity: 1; }
#crCanvas.is-dragging { cursor: grabbing; }
.cr-shade {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(5, 7, 11, .82) 0%, rgba(5, 7, 11, .45) 26%, rgba(5, 7, 11, 0) 46%),
    linear-gradient(0deg, rgba(5, 7, 11, .7) 0%, rgba(5, 7, 11, 0) 22%),
    linear-gradient(180deg, rgba(5, 7, 11, .55) 0%, rgba(5, 7, 11, 0) 16%);
}
.page-craft.no-webgl .cr-sticky {
  background:
    linear-gradient(90deg, rgba(5, 7, 11, .92) 0%, rgba(5, 7, 11, .5) 45%, rgba(5, 7, 11, .15) 100%),
    url("../media/evidence/factory-3.webp") center / cover no-repeat;
}

.cr-crumb {
  position: absolute;
  z-index: 3;
  left: var(--cr-x);
  top: 92px;
  margin: 0;
}
.cr-crumb a { color: inherit; text-decoration: none; }

/* ---------- intro ---------- */
.cr-intro {
  position: absolute;
  z-index: 3;
  left: var(--cr-x);
  top: 50%;
  width: min(660px, 50vw);
  transform: translate3d(0, calc(-50% + var(--iy, 0px)), 0);
  opacity: var(--io, 1);
  will-change: transform, opacity;
}
.cr-intro[hidden-by-scroll] { pointer-events: none; }
.cr-h1 {
  margin: 0 0 26px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.6rem, min(4.9vw, 8.6vh), 5rem);
  line-height: .98;
  letter-spacing: -.035em;
  color: var(--type-ink, #f4f6fa);
}
.cr-h1 .ln { display: block; overflow: hidden; padding: .02em 0 .1em; margin-bottom: -.06em; }
.cr-h1 .ln-in {
  display: inline-block;
  transform: translate3d(0, 112%, 0);
  animation: crLineUp 1.25s cubic-bezier(.16, 1, .3, 1) forwards;
  animation-delay: calc(.25s + var(--d, 0) * .12s);
}
.cr-h1 em {
  font-style: normal;
  background: linear-gradient(100deg, #a9cbff 0%, #7fe9ff 42%, #4d8dff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
:root[data-lang="zh"] .cr-h1 {
  font-family: var(--font-zh);
  font-weight: 900;
  font-size: clamp(2.4rem, min(4.5vw, 8vh), 4.5rem);
  line-height: 1.14;
  letter-spacing: .01em;
}
.cr-intro .pg-eyebrow,
.cr-intro-lead,
.cr-start {
  opacity: 0;
  animation: crFade 1s cubic-bezier(.16, 1, .3, 1) forwards;
}
.cr-intro .pg-eyebrow { animation-delay: .15s; }
.cr-intro-lead { animation-delay: .55s; }
.cr-start { animation-delay: .75s; }
.cr-intro-lead {
  max-width: 520px;
  margin: 0 0 34px;
  font-size: var(--prem-type-lead, 1.15rem);
  line-height: 1.75;
  color: #aeb7c8;
}
.cr-start {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 0;
  border: 0;
  background: none;
  color: #dbe6f7;
  font: 600 13px/1 var(--font-ui);
  letter-spacing: .12em;
  text-transform: uppercase;
  cursor: pointer;
}
:root[data-lang="zh"] .cr-start { letter-spacing: .08em; }
.cr-start-ring {
  position: relative;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(127, 178, 255, .45);
  box-shadow: 0 0 24px rgba(59, 130, 246, .25);
  transition: border-color .3s, box-shadow .3s;
}
.cr-start-ring i {
  width: 2px;
  height: 14px;
  border-radius: 2px;
  background: #7fe9ff;
  animation: crDrip 1.8s ease-in-out infinite;
}
.cr-start:hover .cr-start-ring { border-color: #7fe9ff; box-shadow: 0 0 34px rgba(127, 233, 255, .4); }
@keyframes crLineUp { to { transform: none; } }
@keyframes crFade { from { opacity: 0; transform: translate3d(0, 14px, 0); } to { opacity: 1; transform: none; } }
@keyframes crDrip {
  0% { transform: translateY(-6px) scaleY(.4); opacity: 0; }
  35% { opacity: 1; }
  100% { transform: translateY(8px) scaleY(1); opacity: 0; }
}

/* ---------- stage panels ---------- */
.cr-panels {
  position: absolute;
  z-index: 3;
  left: var(--cr-x);
  top: 50%;
  width: min(440px, 34vw);
  pointer-events: none;
}
.cr-panel {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  transform: translateY(-50%);
  visibility: hidden;
}
.cr-panel.is-active { visibility: visible; pointer-events: auto; }
.cr-panel.is-leaving { visibility: visible; }
.cr-panel > * {
  opacity: 0;
  transform: translate3d(0, 22px, 0);
  filter: blur(4px);
  transition: opacity .45s ease, transform .6s cubic-bezier(.16, 1, .3, 1), filter .45s ease;
}
.cr-panel.is-leaving > * {
  opacity: 0;
  transform: translate3d(0, -16px, 0);
  filter: blur(4px);
  transition-duration: .32s;
}
.cr-panel.is-active > * {
  opacity: 1;
  transform: none;
  filter: none;
  transition: opacity .7s ease, transform 1s cubic-bezier(.16, 1, .3, 1), filter .7s ease;
}
.cr-panel.is-active > :nth-child(1) { transition-delay: .06s; }
.cr-panel.is-active > :nth-child(2) { transition-delay: .12s; }
.cr-panel.is-active > :nth-child(3) { transition-delay: .2s; }
.cr-panel.is-active > :nth-child(4) { transition-delay: .28s; }
.cr-idx {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 18px;
  font: 500 12px/1 var(--font-mono);
  letter-spacing: .16em;
  color: #6f7c95;
}
.cr-idx b {
  font: 700 44px/1 var(--font-display);
  letter-spacing: -.03em;
  background: linear-gradient(180deg, #fff 10%, #7fb2ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.cr-idx i {
  margin-left: 6px;
  padding: 5px 9px;
  border-radius: 999px;
  border: 1px solid rgba(127, 233, 255, .3);
  font-style: normal;
  font-size: 10.5px;
  color: #7fe9ff;
  text-transform: uppercase;
}
.cr-title {
  margin: 0 0 16px;
  font: 700 clamp(2rem, 3.2vw, 3rem)/1.06 var(--font-display);
  letter-spacing: -.028em;
  color: #f4f7fc;
  text-wrap: balance;
}
:root[data-lang="zh"] .cr-title { font-family: var(--font-zh); font-weight: 900; letter-spacing: .01em; line-height: 1.2; }
.cr-desc {
  margin: 0 0 24px;
  font-size: 16.5px;
  line-height: 1.75;
  color: #b3bccc;
}
.cr-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.cr-specs li {
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, .1);
  background: rgba(10, 16, 28, .55);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  font: 500 11.5px/1.35 var(--font-mono);
  letter-spacing: .04em;
  color: #cfe0f7;
}
.cr-outro-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- HUD ---------- */
.cr-hud {
  position: absolute;
  z-index: 3;
  right: var(--cr-x);
  top: 92px;
  width: 232px;
  padding: 14px 16px 16px;
  border-radius: 14px;
  background: linear-gradient(165deg, rgba(16, 24, 38, .62), rgba(8, 12, 20, .5));
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  backdrop-filter: blur(12px) saturate(140%);
  border: 1px solid rgba(255, 255, 255, .1);
  font-family: var(--font-mono);
  color: #8fa0bb;
  opacity: 0;
  transform: translate3d(0, -8px, 0);
  transition: opacity .6s ease, transform .8s cubic-bezier(.16, 1, .3, 1);
}
.cr-hud.is-on { opacity: 1; transform: none; }
.cr-hud-top { display: flex; justify-content: space-between; font-size: 10.5px; letter-spacing: .16em; }
.cr-hud-top span:last-child { color: #cfe0f7; }
.cr-hud-label { margin-top: 14px; font-size: 10.5px; letter-spacing: .18em; color: #7fe9ff; text-transform: uppercase; }
.cr-hud-value {
  margin-top: 6px;
  font: 600 26px/1.1 var(--font-ui);
  letter-spacing: -.01em;
  color: #f3f7fd;
  font-variant-numeric: tabular-nums;
}
.cr-hud-value.is-pass { color: #7fffc4; text-shadow: 0 0 18px rgba(127, 255, 196, .45); }
.cr-hud-bar { position: relative; height: 2px; margin-top: 12px; background: rgba(255, 255, 255, .08); border-radius: 2px; overflow: hidden; }
.cr-hud-bar i {
  position: absolute;
  inset: 0;
  transform-origin: left center;
  transform: scaleX(0);
  background: linear-gradient(90deg, #3b82f6, #7fe9ff);
}

/* ---------- hotspots ---------- */
.cr-hots { position: absolute; inset: 0; z-index: 2; pointer-events: none; }
.cr-hot {
  position: absolute;
  left: 0;
  top: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0;
  border: 0;
  background: none;
  color: #e6eefb;
  font: 500 12px/1.2 var(--font-ui);
  letter-spacing: .02em;
  text-align: left;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translate3d(-9999px, -9999px, 0);
  will-change: transform, opacity;
}
.cr-hot.is-on { visibility: visible; pointer-events: auto; }
.cr-hot i {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-left: -7px;
  border-radius: 50%;
  background: radial-gradient(circle, #eaffff 0 28%, #7fe9ff 30% 52%, rgba(127, 233, 255, .15) 54%);
  box-shadow: 0 0 14px rgba(127, 233, 255, .7);
}
.cr-hot i::after {
  content: '';
  position: absolute;
  inset: -7px;
  border-radius: 50%;
  border: 1px solid rgba(127, 233, 255, .6);
  animation: crPing 2.2s ease-out infinite;
}
.cr-hot-label {
  position: relative;
  padding: 7px 11px;
  border-radius: 999px;
  background: rgba(8, 13, 22, .72);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(127, 233, 255, .28);
  white-space: nowrap;
  transition: border-color .3s, background .3s;
}
.cr-hot-label::before {
  content: '';
  position: absolute;
  right: 100%;
  top: 50%;
  width: 10px;
  height: 1px;
  background: rgba(127, 233, 255, .5);
}
.cr-hot:hover .cr-hot-label,
.cr-hot.is-open .cr-hot-label { border-color: rgba(127, 233, 255, .7); background: rgba(14, 30, 48, .85); }
.cr-hot-pop {
  position: absolute;
  left: 16px;
  top: calc(100% + 10px);
  width: 250px;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(8, 13, 22, .9);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(127, 233, 255, .3);
  box-shadow: 0 18px 40px rgba(0, 0, 0, .45);
  font: 400 12.5px/1.6 var(--font-body);
  letter-spacing: 0;
  color: #c7d3e6;
  white-space: normal;
  opacity: 0;
  transform: translate3d(0, -6px, 0);
  pointer-events: none;
  transition: opacity .3s ease, transform .4s cubic-bezier(.16, 1, .3, 1);
}
.cr-hot.is-open .cr-hot-pop { opacity: 1; transform: none; }
@keyframes crPing {
  0% { transform: scale(.5); opacity: .9; }
  100% { transform: scale(1.7); opacity: 0; }
}

/* ---------- steps ---------- */
.cr-steps {
  position: absolute;
  z-index: 4;
  left: 50%;
  bottom: 26px;
  display: flex;
  gap: 4px;
  padding: 6px 6px 10px;
  border-radius: 18px;
  background: rgba(9, 13, 21, .62);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  backdrop-filter: blur(16px) saturate(150%);
  border: 1px solid rgba(255, 255, 255, .1);
  box-shadow: 0 20px 50px rgba(0, 0, 0, .4);
  transform: translateX(-50%);
}
.cr-steps button {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: #8793a8;
  font: 500 12.5px/1 var(--font-ui);
  letter-spacing: .02em;
  white-space: nowrap;
  cursor: pointer;
  transition: color .35s ease, background .35s ease, box-shadow .35s ease;
}
.cr-steps button b { font: 500 10.5px/1 var(--font-mono); color: #56637a; transition: color .35s ease; }
.cr-steps button:hover { color: #dbe6f7; background: rgba(255, 255, 255, .05); }
.cr-steps button.is-done b { color: #7fb2ff; }
.cr-steps button.is-active {
  color: #fff;
  background: rgba(59, 130, 246, .2);
  box-shadow: inset 0 0 0 1px rgba(127, 178, 255, .42);
}
.cr-steps button.is-active b { color: #7fe9ff; }
.cr-steps-track {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: rgba(255, 255, 255, .06);
  overflow: hidden;
}
.cr-steps-track i {
  position: absolute;
  inset: 0;
  transform-origin: left center;
  transform: scaleX(0);
  background: linear-gradient(90deg, #3b82f6, #7fe9ff);
  box-shadow: 0 0 10px rgba(127, 233, 255, .6);
}

.cr-hint {
  position: absolute;
  z-index: 3;
  right: var(--cr-x);
  bottom: 38px;
  display: flex;
  align-items: center;
  gap: 10px;
  font: 500 11px/1 var(--font-mono);
  letter-spacing: .12em;
  color: #6f7c95;
  text-transform: uppercase;
  transition: opacity .6s ease;
}
.cr-hint-mouse {
  position: relative;
  width: 16px;
  height: 24px;
  border-radius: 9px;
  border: 1px solid rgba(255, 255, 255, .28);
}
.cr-hint-mouse i {
  position: absolute;
  left: 50%;
  top: 5px;
  width: 2px;
  height: 5px;
  margin-left: -1px;
  border-radius: 1px;
  background: #7fb2ff;
  animation: crWheel 1.8s ease-in-out infinite;
}
@keyframes crWheel {
  0% { transform: translateY(0); opacity: 0; }
  30% { opacity: 1; }
  100% { transform: translateY(8px); opacity: 0; }
}

/* ---------- QC card stack ---------- */
.qc-wrap {
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
}
.qc-tabs { position: relative; display: flex; flex-direction: column; gap: 2px; }
.qc-tabs button {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 11px 14px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: #7d889d;
  font: 500 14px/1.3 var(--font-ui);
  text-align: left;
  cursor: pointer;
  transition: color .3s ease, background .3s ease;
}
.qc-tabs button b { font: 500 11px/1 var(--font-mono); color: #4f5b70; transition: color .3s; }
.qc-tabs button::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 2px;
  height: 0;
  border-radius: 2px;
  background: linear-gradient(180deg, #3b82f6, #7fe9ff);
  transform: translateY(-50%);
  transition: height .4s cubic-bezier(.16, 1, .3, 1);
}
.qc-tabs button:hover { color: #d6e1f2; background: rgba(255, 255, 255, .03); }
.qc-tabs button.is-active { color: #fff; background: rgba(59, 130, 246, .12); }
.qc-tabs button.is-active b { color: #7fe9ff; }
.qc-tabs button.is-active::before { height: 60%; }

.qc-stage-wrap { position: relative; }
.qc-stage {
  position: relative;
  height: 580px;
  outline: none;
  perspective: 1600px;
  touch-action: pan-y;
  user-select: none;
  -webkit-user-select: none;
  cursor: grab;
}
.qc-stage.is-dragging { cursor: grabbing; }
.qc-stage:focus-visible { outline: 2px solid rgba(127, 178, 255, .6); outline-offset: 8px; border-radius: 24px; }
.qc-card {
  position: absolute;
  left: 50%;
  top: 0;
  width: min(440px, 100%);
  height: 100%;
  margin-left: calc(min(440px, 100%) / -2);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: 24px;
  background: linear-gradient(165deg, rgba(26, 36, 54, .96), rgba(11, 16, 26, .98));
  border: 1px solid rgba(255, 255, 255, .1);
  box-shadow: 0 40px 80px rgba(0, 0, 0, .45), inset 0 1px 0 rgba(255, 255, 255, .06);
  transform-origin: 50% 100%;
  will-change: transform, opacity;
  backface-visibility: hidden;
}
.qc-card.is-front { border-color: rgba(127, 178, 255, .32); }
.qc-dim {
  position: absolute;
  inset: 0;
  z-index: 3;
  border-radius: inherit;
  background: #05080e;
  opacity: 0;
  pointer-events: none;
  will-change: opacity;
}
.qc-photo { position: relative; flex: none; height: 200px; margin: 0; overflow: hidden; }
.qc-photo img { display: block; width: 100%; height: 100%; object-fit: cover; pointer-events: none; }
.qc-photo::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 16, 26, 0) 40%, rgba(11, 16, 26, .92) 100%);
}
.qc-photo figcaption {
  position: absolute;
  z-index: 1;
  right: 14px;
  top: 14px;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(7, 9, 13, .6);
  border: 1px solid rgba(255, 255, 255, .16);
  font: 500 10.5px/1 var(--font-mono);
  letter-spacing: .12em;
  color: #cfe0f7;
  text-transform: uppercase;
}
.qc-body { display: flex; flex: 1; flex-direction: column; padding: 4px 28px 26px; }
.qc-kicker { display: flex; align-items: baseline; gap: 12px; margin: 0 0 10px; font: 500 11px/1 var(--font-mono); letter-spacing: .16em; color: rgba(127, 178, 255, .85); }
.qc-kicker b {
  font: 700 38px/1 var(--font-display);
  letter-spacing: -.03em;
  background: linear-gradient(180deg, #fff 15%, #7fb2ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.qc-body h3 { margin: 0 0 10px; font: 700 23px/1.25 var(--font-display); color: #f3f6fb; }
:root[data-lang="zh"] .qc-body h3 { font-family: var(--font-zh); }
.qc-desc { margin: 0 0 18px; font-size: 14.5px; line-height: 1.7; color: #9ea9bd; }
.qc-meta { margin: auto 0 0; display: grid; gap: 0; }
.qc-meta > div { display: grid; grid-template-columns: 88px minmax(0, 1fr); gap: 12px; padding: 10px 0; border-top: 1px solid rgba(255, 255, 255, .07); }
.qc-meta dt { font: 500 10.5px/1.6 var(--font-mono); letter-spacing: .14em; color: #6f7c95; text-transform: uppercase; }
.qc-meta dd { margin: 0; font-size: 13.5px; line-height: 1.5; color: #dde6f3; }
.qc-ctrl {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 26px;
}
.qc-nav {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .16);
  background: rgba(255, 255, 255, .04);
  color: #e6eefb;
  font-size: 18px;
  cursor: pointer;
  transition: background .3s, border-color .3s, transform .3s;
}
.qc-nav:hover { background: rgba(59, 130, 246, .22); border-color: rgba(127, 178, 255, .55); }
.qc-nav:active { transform: scale(.94); }
.qc-count { min-width: 76px; text-align: center; font: 500 13px/1 var(--font-mono); letter-spacing: .12em; color: #6f7c95; }
.qc-count b { color: #f3f6fb; font-weight: 500; }
.qc-drag { font: 500 11px/1 var(--font-mono); letter-spacing: .12em; color: #56637a; text-transform: uppercase; }
.qc-foot { max-width: 820px; margin: 44px 0 0; font-size: 12.5px; line-height: 1.7; color: #6f7c95; }

/* ---------- proof ---------- */
.cr-proof-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.cr-proof-card {
  position: relative;
  display: block;
  height: 280px;
  overflow: hidden;
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, .09);
  background: #0d1119;
  text-decoration: none;
  transition: border-color .4s ease, transform .6s cubic-bezier(.22, 1, .36, 1);
}
.cr-proof-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .55;
  transition: transform 1.1s cubic-bezier(.22, 1, .36, 1), opacity .5s ease;
}
.cr-proof-card img.cr-proof-cert { object-fit: contain; padding: 22px 22px 90px; opacity: .8; transform: rotate(-3deg); }
.cr-proof-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 9, 13, .1) 0%, rgba(7, 9, 13, .88) 78%);
}
.cr-proof-body {
  position: absolute;
  z-index: 1;
  left: 24px;
  right: 24px;
  bottom: 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: #9cc4ff;
  font: 600 13.5px/1.3 var(--font-ui);
}
.cr-proof-body small { font-size: 10.5px; font-weight: 500; letter-spacing: .16em; color: #7fe9ff; }
.cr-proof-body b { font: 700 22px/1.2 var(--font-display); color: #f3f6fb; }
:root[data-lang="zh"] .cr-proof-body b { font-family: var(--font-zh); }
.cr-proof-card:hover { border-color: rgba(127, 178, 255, .4); transform: translateY(-4px); }
.cr-proof-card:hover img { transform: scale(1.06); opacity: .7; }
.cr-proof-card:hover img.cr-proof-cert { transform: rotate(0) scale(1.04); }

/* ---------- responsive ---------- */
@media (max-width: 1100px) {
  .cr-steps button span { display: none; }
  .cr-steps button { padding: 10px 12px; }
  .cr-steps button.is-active span { display: inline; }
}
@media (max-width: 900px) {
  .qc-wrap { grid-template-columns: 1fr; }
  .qc-tabs {
    flex-direction: row;
    overflow-x: auto;
    gap: 6px;
    padding-bottom: 6px;
    scrollbar-width: none;
  }
  .qc-tabs::-webkit-scrollbar { display: none; }
  .qc-tabs button { flex: none; padding: 9px 12px; border: 1px solid rgba(255, 255, 255, .08); }
  .qc-tabs button::before { display: none; }
  .cr-proof-grid { grid-template-columns: 1fr; }
  .cr-proof-card { height: 220px; }
}
@media (max-width: 760px) {
  .page-craft { --cr-seg: 80vh; }
  .cr-shade {
    background:
      linear-gradient(0deg, rgba(5, 7, 11, .94) 0%, rgba(5, 7, 11, .72) 34%, rgba(5, 7, 11, 0) 58%),
      linear-gradient(180deg, rgba(5, 7, 11, .6) 0%, rgba(5, 7, 11, 0) 18%);
  }
  .cr-crumb { top: 80px; }
  .cr-intro { top: auto; bottom: 108px; width: auto; right: var(--pad); transform: translate3d(0, var(--iy, 0px), 0); }
  .cr-h1 { font-size: clamp(2.2rem, 10vw, 3rem); margin-bottom: 16px; }
  :root[data-lang="zh"] .cr-h1 { font-size: clamp(2rem, 9vw, 2.7rem); }
  .cr-intro-lead { font-size: 14.5px; margin-bottom: 20px; }
  .cr-panels { top: auto; bottom: 96px; left: var(--pad); right: var(--pad); width: auto; }
  .cr-panel { top: auto; bottom: 0; transform: none; }
  .cr-idx { margin-bottom: 10px; }
  .cr-idx b { font-size: 30px; }
  .cr-title { font-size: 26px; margin-bottom: 10px; }
  .cr-desc { font-size: 14px; margin-bottom: 14px; }
  .cr-specs li { font-size: 10.5px; padding: 6px 9px; }
  .cr-hud { top: 76px; right: var(--pad); width: auto; min-width: 150px; padding: 10px 12px; }
  .cr-hud-top { display: none; }
  .cr-hud-label { margin-top: 0; font-size: 9.5px; }
  .cr-hud-value { font-size: 18px; }
  .cr-hint { display: none; }
  .cr-steps { bottom: 18px; max-width: calc(100vw - 24px); }
  .cr-steps button { padding: 10px 10px; }
  .cr-steps button.is-active span { display: none; }
  .cr-hot-label { font-size: 11px; padding: 6px 9px; }
  .cr-hot:not(.is-open) .cr-hot-label { display: none; }
  .cr-hot-pop { width: 210px; }
  .qc-stage { height: 560px; }
  .qc-card { width: min(360px, 88vw); margin-left: calc(min(360px, 88vw) / -2); }
  .qc-photo { height: 160px; }
  .qc-body { padding: 2px 20px 20px; }
  .qc-drag { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .cr-h1 .ln-in,
  .cr-intro .pg-eyebrow,
  .cr-intro-lead,
  .cr-start { animation: none !important; opacity: 1 !important; transform: none !important; }
  .cr-panel > *,
  .cr-panel.is-active > * { transition: opacity .2s ease !important; transform: none !important; filter: none !important; }
}