/* ── Page Loader (首屏加载动画) ── */
.page-loader {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: #111315;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: opacity .9s cubic-bezier(.4, 0, .2, 1);
}

.page-loader__video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-loader.is-hidden {
  opacity: 0;
  pointer-events: none;
}

body:has(.page-loader:not(.is-hidden)) {
  overflow: hidden;
}

#smooth-wrapper {
  overflow: hidden;
}

.page-progress {
  position: fixed;
  z-index: 70;
  left: 18px;
  top: 50%;
  display: none;
  align-items: center;
  gap: 9px;
  color: #8a908e;
  font: 10px/1 "Arial Narrow", sans-serif;
  letter-spacing: .08em;
  transform: translateY(-50%) rotate(90deg);
  transform-origin: center;
  pointer-events: none;
}

.page-progress__track {
  display: block;
  width: 72px;
  height: 1px;
  overflow: hidden;
  background: #555a59;
}

.page-progress__track i {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left;
}

.scene-label {
  max-width: 520px;
  color: #4a514d;
  font-size: clamp(15px, 1.15vw, 18px);
  font-weight: 650;
  line-height: 1.4;
  letter-spacing: .01em;
  text-wrap: balance;
}

.act-label {
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-size: 14px;
  font-weight: 650;
  letter-spacing: .02em;
}

.act-label b {
  color: var(--orange);
  font-size: 22px;
  letter-spacing: -.025em;
}

/* === Hero carousel ============================================ */
.hero-carousel {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 560px;
  background: var(--ink);
  color: var(--paper);
  overflow: hidden;
  isolation: isolate;
}

.hero-carousel__viewport {
  position: absolute;
  inset: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  display: grid;
  opacity: 0;
  visibility: hidden;
  transition: opacity 900ms cubic-bezier(.65, 0, .35, 1);
  pointer-events: none;
}

.hero-slide.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  z-index: 1;
}

.hero-slide__media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 0;
}

.hero-slide__veil {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(180deg,
      rgba(0, 0, 0, 0) 0%,
      rgba(0, 0, 0, 0) 35%,
      rgba(8, 10, 11, 0.55) 70%,
      rgba(8, 10, 11, 0.85) 100%),
    linear-gradient(90deg,
      rgba(0, 0, 0, 0.35) 0%,
      rgba(0, 0, 0, 0) 35%);
}

.hero-slide__content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: flex-start;
  align-self: end;
  justify-self: start;
  margin-inline: 0;
  margin-right: auto;
  text-align: left;
  padding-top: calc(var(--header-h) + clamp(28px, 6vh, 64px));
  padding-bottom: clamp(96px, 12vh, 144px);
  max-width: min(1200px, 85%);
}

.hero-slide:not(.is-active) .hero-slide__eyebrow,
.hero-slide:not(.is-active) .hero-slide__title,
.hero-slide:not(.is-active) .hero-slide__desc,
.hero-slide:not(.is-active) .hero-slide__cta {
  opacity: 0;
  filter: blur(16px);
  transform: translateY(24px);
}

.hero-slide__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--orange);
  font: 600 clamp(11px, .85vw, 13px)/1 "Arial Narrow", var(--font-body);
  letter-spacing: .14em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.hero-slide__eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
}

.hero-slide__title {
  font-family: var(--font-display);
  font-size: clamp(38px, 5.4vw, 86px);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -.03em;
  color: #fff;
  text-align: left;
  text-wrap: pretty;
  text-shadow: 0 6px 32px rgba(0, 0, 0, .35);
}

.hero-slide__title em {
  display: inline-block;
  color: var(--orange);
  font-style: normal;
}

.hero-slide__desc {
  margin-top: 18px;
  max-width: 560px;
  color: rgba(255, 255, 255, .82);
  font-size: clamp(14px, 1.05vw, 17px);
  line-height: 1.7;
}

.hero-slide__cta {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-top: 28px;
  padding: 14px 40px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 999px;
  background: rgba(17, 19, 21, 0.18);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background-color 220ms ease, border-color 220ms ease, color 220ms ease, transform 220ms ease;
}

.hero-slide__cta:hover {
  background: var(--orange);
  border-color: var(--orange);
  color: #ffffff;
  transform: translateY(-1px);
}

.hero-slide__cta b {
  font: 700 11px/1 "Arial Narrow", sans-serif;
  letter-spacing: .14em;
  opacity: .82;
}

.hero-slide__cta:hover b {
  opacity: 1;
}

/* === Hero carousel bottom controls (图2风格) === */
.hero-carousel__bottom-bar {
  position: absolute;
  z-index: 15;
  bottom: clamp(24px, 3.8vw, 36px);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 12px;
  pointer-events: auto;
}

.hero-carousel__dots {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgb(0, 0, 0, 0.15);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.hero-carousel__dot {
  appearance: none;
  width: 10px;
  height: 10px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgb(255, 255, 255);
  opacity: 0.65;
  cursor: pointer;
  transition: width 320ms cubic-bezier(0.2, 0.8, 0.2, 1),
    background-color 240ms ease,
    opacity 240ms ease,
    border-radius 320ms ease,
    transform 200ms ease;
}

.hero-carousel__dot:hover {
  opacity: 0.95;
  transform: scale(1.2);
  color: var(--orange, #f08200);
}

.hero-carousel__dot.is-active {
  width: 40px;
  height: 10px;
  border-radius: 999px;
  background: rgb(255, 255, 255);
  opacity: 1;
  transform: none;
}

.hero-carousel__play-toggle {
  appearance: none;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgb(0, 0, 0, 0.15);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  cursor: pointer;
  transition: background-color 220ms ease, color 220ms ease, transform 220ms ease;
}

.hero-carousel__play-toggle:hover {
  color: rgb(255, 255, 255);
  transform: scale(1.08);
}

.hero-carousel__play-toggle svg {
  width: 18px;
  height: 18px;
  display: block;
}

.hero-carousel__play-toggle.is-playing .icon-play {
  display: none;
}

.hero-carousel__play-toggle.is-playing .icon-pause {
  display: block;
}

.hero-carousel__play-toggle.is-paused .icon-play {
  display: block;
  transform: translateX(1px);
}

.hero-carousel__play-toggle.is-paused .icon-pause {
  display: none;
}

.hero-carousel__play-toggle:focus-visible,
.hero-carousel__dot:focus-visible {
  outline: 2px solid var(--orange, #f08200);
  outline-offset: 2px;
}

/* === Responsive hero carousel === */
@media (max-width: 1200px) {
  .hero-slide__content {
    max-width: min(720px, 70%);
    padding-bottom: clamp(72px, 10vh, 110px);
  }
}

@media (max-width: 767px) {
  .hero-carousel {
    min-height: 520px;
  }

  .hero-slide__content {
    max-width: 100%;
    padding-top: calc(var(--header-h) + 24px);
    padding-bottom: 88px;
  }

  .hero-slide__title {
    font-size: clamp(34px, 9.4vw, 50px);
  }

  .hero-slide__desc {
    font-size: 13.5px;
    line-height: 1.65;
  }

  .hero-carousel__bottom-bar {
    bottom: 20px;
    gap: 10px;
  }

  .hero-carousel__dots {
    padding: 6px 12px;
    gap: 6px;
  }

  .hero-carousel__dot {
    width: 5px;
    height: 5px;
  }

  .hero-carousel__dot.is-active {
    width: 22px;
    height: 5px;
  }

  .hero-carousel__play-toggle {
    width: 28px;
    height: 28px;
  }

  .hero-carousel__play-toggle svg {
    width: 10px;
    height: 10px;
  }

  .hero-carousel__nav {
    right: 14px;
    gap: 12px;
    padding: 12px 8px;
  }

  .hero-dot {
    width: 9px;
    height: 9px;
  }

  .hero-dot.is-active {
    width: 9px;
    height: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-slide {
    transition: opacity 1ms linear;
  }

  .hero-dot {
    transition: none;
  }
}

.tech-paper {
  position: relative;
  background-color: var(--paper-tech);
  color: var(--ink);
  isolation: isolate;
}

/* .tech-paper::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: 0;
  right: 0;
  width: 36%;
  height: 100%;
  background: #e2e5e1;
  clip-path: polygon(28% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
} */

.machine-scene {
  position: relative;
  z-index: 2;
  background: rgb(245, 245, 247);
  color: #f4f6f5;
}

/* 第二屏底部 → 第三屏（案例深入）的柔和过渡 */
.machine-scene::after {
  content: "";
  position: absolute;
  z-index: 6;
  left: 0;
  right: 0;
  bottom: 0;
  height: clamp(72px, 11vh, 128px);
  pointer-events: none;
  background: linear-gradient(
    180deg,
    rgba(245, 245, 247, 0) 0%,
    rgba(245, 245, 247, 0.35) 42%,
    rgba(245, 245, 247, 0.82) 78%,
    rgb(245, 245, 247) 100%
  );
}

.machine-scene__pin {
  position: relative;
  height: 100vh;
  height: 100dvh;
  min-height: 640px;
  overflow: hidden;
  /* 1:1 精确对标图 1 易拉罐展厅的强对比舞台黑-灰聚光灯渐变背景 */
  background: radial-gradient(ellipse 75% 65% at 50% 38%, #ffffff 0%, #fafdff 30%, #eef3f5 62%, #c6cdcf 100%);
}

.machine-scene.is-detail-mode .machine-scene__pin {
  overscroll-behavior: none;
  background: radial-gradient(circle at 52% 36%, #ffffff 0%, #fafdff 58%, #c6cdcf 100%);
}

/* 舞台背景居中放大的白色 vi-logo.svg (透明度 0.15，z-index: 1) */
.machine-scene__bg-vi-logo {
  position: absolute;
  z-index: 1;
  top: 45%;
  left: 50%;
  width: min(85vw, 860px);
  transform: translate(-50%, -50%);
  opacity: 0.15 !important;
  pointer-events: none;
  user-select: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

.machine-scene__bg-vi-logo svg {
  width: 100%;
  height: auto;
  display: block;
}

.machine-scene__bg-vi-logo polygon,
.machine-scene__bg-vi-logo path {
  fill: #b9c0c2 !important;
}

.machine-scene__title {
  position: absolute;
  z-index: 4;
  top: calc(var(--header-h) + clamp(28px, 8vh, 80px));
  left: 50%;
  margin: 0;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(34px, 3.2vw, 52px);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -.02em;
  text-align: center;
  white-space: nowrap;
  transform: translateX(-50%);
  transition: opacity 280ms ease, transform 360ms cubic-bezier(.25, 1, .5, 1);
  pointer-events: none;
}

.machine-scene.is-detail-mode .machine-scene__title {
  opacity: 0;
  transform: translate(-50%, -12px);
}

.machine-canvas,
.machine-fallback {
  position: absolute;
  z-index: 2;
  inset: 0;
  width: 100%;
  height: 100%;
}

.machine-canvas {
  outline: none;
  pointer-events: none;
}

.machine-scene.is-interactive .machine-canvas {
  pointer-events: auto;
  touch-action: none;
  cursor: grab;
}

.machine-scene.is-dragging .machine-canvas {
  cursor: grabbing;
}

.machine-canvas:focus-visible {
  outline: 1px solid var(--orange);
  outline-offset: -10px;
}

.machine-fallback {
  object-fit: contain;
  object-position: 70% 52%;
  opacity: 1;
  filter: grayscale(.78) brightness(.82) contrast(1.08);
  pointer-events: none;
}

.machine-scene.is-webgl .machine-fallback {
  opacity: 0;
}

/* .machine-scene__grid {
  position: absolute;
  z-index: 1;
  top: 8%;
  right: -7vw;
  width: min(62vw, 1040px);
  aspect-ratio: 1;
  border: 1px solid rgba(218, 226, 225, .13);
  border-radius: 50%;
} */

/* .machine-scene__grid::before,
.machine-scene__grid::after {
  content: "";
  position: absolute;
}

.machine-scene__grid::before {
  inset: 17%;
  border: 1px solid rgba(218, 226, 225, .1);
  border-radius: 50%;
}

.machine-scene__grid::after {
  top: 50%;
  left: -18%;
  width: 136%;
  height: 1px;
  background: rgba(218, 226, 225, .1);
} */

/* ---------- Carousel state (multi-model horizontal selector) ---------- */
.machine-carousel {
  position: absolute;
  z-index: 4;
  right: 0;
  bottom: 24px;
  left: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
  padding: 0 var(--gutter) 36px;
  opacity: 0;
  transform: translateY(0);
  pointer-events: none;
  transition: opacity 320ms ease, transform 420ms cubic-bezier(.76, 0, .24, 1);
}

.machine-scene.is-webgl .machine-carousel {
  opacity: 1;
  pointer-events: auto;
}

.machine-scene.is-detail-mode .machine-carousel {
  opacity: 0;
  transform: translateY(24px);
  pointer-events: none;
}

.machine-carousel__arrow {
  position: absolute;
  top: 50%;
  z-index: 5;
  display: grid;
  place-content: center;
  width: 64px;
  height: 64px;
  padding: 0;
  background: rgba(12, 15, 16, .08);
  border: 1px solid rgba(218, 226, 225, .22);
  border-radius: 50%;
  color: #eef0ed;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  transform: translateY(-50%);
  transition: border-color 220ms ease, background-color 220ms ease, opacity 220ms ease;
}

.machine-carousel__arrow--prev {
  left: var(--gutter);
}

.machine-carousel__arrow--next {
  right: var(--gutter);
}

.machine-carousel__arrow svg {
  width: 28px;
  height: 28px;
  display: block;
  transition: transform 220ms ease;
}

.machine-carousel__arrow--prev:hover svg {
  transform: translateX(-3px);
}

.machine-carousel__arrow--next:hover svg {
  transform: translateX(3px);
}

.machine-carousel__arrow:hover {
  background: rgba(240, 130, 0, 1);
  border-color: var(--orange);
}

.machine-carousel__arrow:focus-visible {
  outline: 1px solid var(--orange);
  outline-offset: 2px;
}

.machine-carousel__arrow[disabled] {
  opacity: .3;
  pointer-events: none;
}

.machine-scene.is-detail-mode .machine-carousel__arrow {
  opacity: 0;
  pointer-events: none;
}

.machine-carousel__track {
  color: #111315;
  font-size: clamp(24px, 3.0vw, 40px);

  letter-spacing: -.02em;
  text-align: center;
  line-height: 1.1;
}

.machine-carousel__dots {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  pointer-events: auto;
}

.machine-carousel__dot {
  appearance: none;
  width: 10px;
  height: 10px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: #ffffff;
  opacity: 0.65;
  cursor: pointer;
  transition: width 320ms cubic-bezier(0.2, 0.8, 0.2, 1),
    background-color 240ms ease,
    opacity 240ms ease,
    border-radius 320ms ease,
    transform 200ms ease;
}

.machine-carousel__dot:hover {
  opacity: 0.95;
  transform: scale(1.2);
}

.machine-carousel__dot.is-active {
  width: 40px;
  height: 10px;
  border-radius: 999px;
  background: #ffffff;
  opacity: 1;
  transform: none;
}

/* ---------- Detail state (single model deep dive) ---------- */
.machine-detail {
  position: absolute;
  z-index: 4;
  inset: 0;
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: opacity 360ms ease, transform 420ms cubic-bezier(.76, 0, .24, 1);
}

.machine-scene.is-detail-mode .machine-detail {
  opacity: 1;
  transform: translateY(0);
}

.machine-detail>* {
  pointer-events: none;
}

.machine-scene.is-detail-mode .machine-detail__back,
.machine-scene.is-detail-mode .machine-parts,
.machine-scene.is-detail-mode .machine-detail__panel {
  pointer-events: auto;
}

.machine-detail__back {
  position: absolute;
  top: calc(var(--header-h) + 38px);
  left: var(--gutter);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: rgb(203 215 221 / 5%);
  border: 1px solid rgba(218, 226, 225, .65);
  border-radius: 999px;
  color: #666666;
  font: 13px/1 inherit;
  cursor: pointer;
  transition: border-color 220ms ease, background-color 220ms ease;
}

/* .machine-detail__back:hover {
  border-color: var(--orange);
  background: rgba(240, 130, 0, .14);
} */

.machine-detail__back:focus-visible {
  outline: 1px solid var(--orange);
  outline-offset: 2px;
}

.machine-detail__back-en {
  color: #9fa8a4;
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.machine-detail__name {
  position: absolute;
  top: calc(var(--header-h) + 110px);
  left: var(--gutter);
  max-width: 400px;
  color: var(--ink);
  font: 24px/1.5 "Arial Narrow", sans-serif;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-weight: 700;
}

.machine-parts {
  position: absolute;
  top: clamp(210px, 29vh, 280px);
  left: var(--gutter);
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: min(238px, 20vw);
  background: transparent;
  color: var(--ink);
}

.machine-parts li {
  border: 0;
}

.machine-parts button {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 10px;
  align-items: center;
  width: 100%;
  min-height: 44px;
  padding: 7px 15px 7px 8px;
  border: 1px solid rgba(17, 19, 21, .09);
  border-radius: 999px;
  background: rgba(255, 255, 255, .86);
  color: inherit;
  font: 600 14px/1.2 var(--font-body);
  text-align: left;
  cursor: pointer;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease;
}

.machine-parts button:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

.machine-parts b {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(17, 19, 21, .08);
  color: #555c59;
  font: 700 10px/1 "Arial Narrow", sans-serif;
  transition: background-color 180ms ease, color 180ms ease;
}

.machine-parts li.is-active {
  color: var(--ink);
}

.machine-parts li.is-active button {
  border-color: rgba(240, 130, 0);
  background: #fff;
}

.machine-parts li.is-active b {
  background: var(--orange);
  color: #fff;
}

.machine-detail__panel {
  position: absolute;
  z-index: 5;
  top: clamp(210px, 29vh, 280px);
  right: var(--gutter);
  width: min(320px, 30vw);
  padding: 26px 28px 24px;
  background: #fff;
  border: 0;
  border-top: 3px solid var(--orange);
  opacity: 0;
  visibility: hidden;
  box-shadow: 2px 2px 40px rgba(0, 0, 0, 0.08);
}

.machine-detail__panel.is-visible {
  opacity: 1;
  visibility: visible;
}

.machine-detail__panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.machine-detail__panel-head span {
  color: #626966;
  font: 600 11px/1.4 "Arial Narrow", var(--font-body);
  letter-spacing: .09em;
}

.machine-detail__panel-head b {
  color: var(--orange);
  font: 700 15px/1 "Arial Narrow", sans-serif;
  letter-spacing: .12em;
}

.machine-detail__panel h3 {
  margin-top: 20px;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(26px, 2.4vw, 36px);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: -.02em;
  text-wrap: balance;
}

.machine-detail__panel>p:not(.machine-detail__panel-hint) {
  margin-top: 15px;
  color: #4e5552;
  font-size: 14px;
  line-height: 1.8;
  text-wrap: pretty;
}

.machine-detail__panel-hint {
  margin-top: 22px;
  padding-top: 14px;
  border-top: 1px solid rgba(17, 19, 21, .12);
  color: #6a716e;
  font-size: 11px;
  line-height: 1.6;
}

.machine-interaction-note {
  position: absolute;
  z-index: 5;
  right: var(--gutter);
  top: 100px;
  display: flex;
  gap: 24px;
  color: #999999;
  font: 12px/1.2 "Arial Narrow", sans-serif;
  letter-spacing: .13em;
  text-transform: uppercase;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 280ms ease, transform 280ms ease, visibility 0s linear 280ms;
  pointer-events: none;
}

.machine-scene.is-detail-mode .machine-interaction-note {
  opacity: .6;
  visibility: visible;
  transform: translateY(0);
  transition-delay: 0s;
}

.machine-scene.is-releasing .machine-parts {
  opacity: 0;
  transform: translateY(102%);
}

.machine-scene.is-releasing .machine-interaction-note {
  opacity: 0;
  transform: translateY(10px);
}

.machine-scene.is-releasing .machine-scene__grid {
  opacity: .28;
  transition: opacity 420ms ease;
}

.machine-status {
  position: absolute;
  z-index: 6;
  right: var(--gutter);
  top: calc(var(--header-h) + 18px);
  display: grid;
  place-content: center;
  width: 148px;
  min-height: 108px;
  padding: 0;
  background: transparent;
  border: 0;
  color: #f0f3f1;
  text-align: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(-10px);
  transition: color 220ms ease, opacity 280ms ease, transform 360ms ease;
  pointer-events: none;
}

.machine-status::before,
.machine-status::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: 50%;
  left: 50%;
  width: 90px;
  aspect-ratio: 1;
  border: 1px solid var(--orange);
  border-radius: 50%;
  opacity: 0;
  transform: translate(-50%, -50%) scale(.42);
  pointer-events: none;
}

.machine-scene.is-interactive:not(.is-gate-released) .machine-status::before,
.machine-scene.is-interactive:not(.is-gate-released) .machine-status::after {
  animation: machine-status-ring 2.6s cubic-bezier(.22, .61, .36, 1) infinite;
}

.machine-scene.is-interactive:not(.is-gate-released) .machine-status::after {
  animation-delay: -1.3s;
}

@keyframes machine-status-ring {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(.42);
  }

  14% {
    opacity: .82;
  }

  72% {
    opacity: .18;
  }

  100% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(1.58);
  }
}

.machine-status__label {
  position: relative;
  z-index: 1;
  font-size: 18px;
  font-weight: 650;
  letter-spacing: .02em;
}

.machine-status__en {
  position: relative;
  z-index: 1;
  margin-top: 8px;
  color: #9fa8a4;
  font: 10px/1 "Arial Narrow", sans-serif;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.machine-scene.is-interactive .machine-status {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.machine-scene.is-releasing .machine-status {
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
}

.machine-scene.is-gate-released .machine-status {
  opacity: 0;
  pointer-events: none;
}

.machine-status:focus-visible {
  outline: 1px solid var(--orange);
  outline-offset: 2px;
}

.machine-load-status {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.case-story {
  position: relative;
  z-index: 3;
  background: rgba(245, 245, 247);

}

.title-black {
  color: var(--ink) !important;
}

.case-sequence__pin {
  position: relative;
  width: 100%;
  height: 100svh;
  min-height: 650px;
  overflow: hidden;
  isolation: isolate;

}

/* 左右空白命中层：与中间舞台解耦，仅拦截侧边滚轮 */
.case-sequence__side {
  position: absolute;
  z-index: 20;
  top: 0;
  bottom: 0;
  width: var(--gutter);
  pointer-events: auto;
  background: transparent;
}

.case-sequence__side--left {
  left: 0;
}

.case-sequence__side--right {
  right: 0;
}

@media (pointer: coarse) {
  .case-sequence__side {
    display: none;
  }
}

/* .case-sequence__pin::before {
  content: "";
  position: absolute;
  z-index: 1;
  inset: 0;
  background: linear-gradient(115deg, transparent 0 52%, rgba(255, 255, 255, .018) 52% 67%, transparent 67%);
  pointer-events: none;
} */

.case-sequence__grid {
  position: absolute;
  z-index: 2;
  inset: 0;
  pointer-events: none;
}

.case-grid-line {
  position: absolute;
  display: block;
  background: rgba(147, 157, 160, .32);
  transform-origin: top left;
}

.case-grid-line--v1,
.case-grid-line--v2,
.case-grid-line--v3 {
  top: 0;
  bottom: 0;
  width: 1px;
}

.case-grid-line--v1 {
  left: var(--gutter);
}

.case-grid-line--v2 {
  left: 50%;
}

.case-grid-line--v3 {
  right: var(--gutter);
}

.case-grid-line--h1,
.case-grid-line--h2 {
  left: 0;
  right: 0;
  height: 1px;
}

.case-grid-line--h1 {
  top: 26%;
}

.case-grid-line--h2 {
  top: 76%;
}

.case-grid-node {
  position: absolute;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #7d878a;
  transform: translate(-50%, -50%);
}

.case-grid-node--1 {
  top: 26%;
  left: var(--gutter);
}

.case-grid-node--2 {
  top: 26%;
  left: 50%;
}

.case-grid-node--3 {
  top: 26%;
  left: calc(100% - var(--gutter));
}

.case-grid-node--4 {
  top: 76%;
  left: var(--gutter);
}

.case-grid-node--5 {
  top: 76%;
  left: 50%;
}

.case-grid-node--6 {
  top: 76%;
  left: calc(100% - var(--gutter));
}

.case-sequence__intro {
  position: absolute;
  z-index: 6;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: calc(var(--header-h) + 4vh);
  padding-bottom: 8vh;
  overflow: hidden;
}

/* 开场中间居中放大的白色 vi-logo.svg (透明度 0.2) */
.case-intro__bg-vi-logo {
  position: absolute;
  z-index: 1;
  top: 52%;
  left: 52%;
  width: min(72vw, 590px);
  transform: translate(-50%, -50%);
  opacity: 0.08 !important;
  pointer-events: none;
  user-select: none;
}

.case-intro__bg-vi-logo svg {
  width: 100%;
  height: auto;
  display: block;
}

.case-intro__bg-vi-logo path,
.case-intro__bg-vi-logo polygon {
  fill: #b9c0c2 !important;
}

/* 右下角白色 logo.svg (宽度 220px) */
.case-intro__bg-brand-logo {
  position: absolute;
  z-index: 1;
  right: clamp(24px, 6vw, 88px);
  top: 20%;
  width: min(60px);
  opacity: 0.85;
  pointer-events: none;
  user-select: none;
}

.case-intro__bg-brand-logo svg,
.case-intro__bg-brand-logo img {
  width: 100%;
  height: auto;
  display: block;
}

/* 保证文字位于背景 SVG 上方 (z-index: 3) */
.case-sequence__intro .scene-label,
.case-sequence__intro h2,
.case-sequence__intro .case-sequence__instruction {
  position: relative;
  z-index: 3;
}

.case-sequence__intro .scene-label {
  color: #a7adaf;
}

.case-sequence__intro h2 {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  margin-top: clamp(28px, 4.5vh, 54px);
  font-size: clamp(52px, 4.6vw, 92px);
  font-family: var(--font-display);
  font-weight: 400 !important;
  line-height: 1;
  letter-spacing: -.065em;
}

.case-sequence__intro h2 span {
  display: block;
}

.case-sequence__intro h2 span:nth-child(2) {
  margin-left: 12vw;
}

.case-sequence__intro h2 em {
  margin-top: clamp(24px, 4vh, 46px);
  margin-left: 40vw;
  color: #939b9d;
  font-size: .42em;
  font-style: normal;
  font-weight: 500;
  letter-spacing: -.025em;
}

.case-sequence__intro h2 strong {
  margin-left: 40vw;
  color: var(--orange);
  font-weight: 650;
}

.case-sequence__lead {
  position: absolute !important;
  z-index: 3;
  left: var(--gutter);
  bottom: clamp(28px, 6vh, 60px);
  width: min(42vw, 540px);
  color: #9a9fa0;
  font-size: clamp(13px, 0.95vw, 15px);
  line-height: 1.75;
}

.case-sequence__instruction {
  position: relative;
  margin-top: clamp(28px, 4vh, 46px);
  margin-left: 12vw;
  display: flex;
  align-items: center;
  gap: 16px;
  color: #9a9fa0;
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-weight: 300 !important;
}

.case-sequence__instruction span {
  color: var(--orange);
}

.case-sequence__instruction i {
  width: clamp(44px, 5vw, 82px);
  height: 1px;
  background: #9a9fa0;
}

.case-scene {
  position: absolute;
  z-index: 4;
  inset: 0;
  visibility: hidden;
  opacity: 0;
}

.case-scene__media {
  position: absolute;
  z-index: 1;
  margin: 0;
  overflow: hidden;
  background: #161a1c;
  will-change: transform, opacity;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform: translate3d(0, 0, 0);
}

.case-scene__media::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, .16);
  background: linear-gradient(180deg, rgba(4, 6, 7, .02), rgba(4, 6, 7, .22));
  pointer-events: none;
}

.case-scene__media picture {
  display: block;
  width: 100%;
  height: 100%;
}

.case-scene__media img,
.case-scene__media video {
  display: block;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  image-rendering: -webkit-optimize-contrast;
  transform: translate3d(0, 0, 0);
}

.case-scene__copy {
  position: absolute;
  z-index: 3;
  width: min(37vw, 630px);
  will-change: transform, opacity;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform: translateZ(0);
}

.case-scene__step {
  display: flex;
  align-items: baseline;
  gap: 14px;
  color: #afb6b7;
  font-size: clamp(14px, 1vw, 17px);
  font-weight: 400;
}

.case-scene__step b {
  color: var(--orange);
  font-size: clamp(20px, 1.65vw, 28px);
  letter-spacing: -.035em;
}

.case-scene__copy h3 {
  margin-top: clamp(26px, 4.2vh, 48px);
  font-size: clamp(42px, 4.2vw, 72px);
  line-height: 1.1;
  letter-spacing: -.045em;
  font-family: var(--font-display);
  font-weight: 400 !important;
}

.case-scene__copy>p:last-child {
  margin-top: clamp(22px, 3.3vh, 38px);
  max-width: 530px;
  color: #9a9fa0;
  font-size: clamp(15px, 1.12vw, 18px);
  line-height: 1.75;

}

.case-scene__depth {
  position: absolute;
  z-index: 4;
  right: var(--gutter);
  top: calc(var(--header-h) + 30px);
  color: #7b8385;
  font: 10px/1 "Arial Narrow", sans-serif;
  letter-spacing: .14em;
}

.case-scene--whole .case-scene__media {
  top: 26%;
  left: var(--gutter);
  width: 40.5%;
  height: 50%;
}

.case-scene--whole .case-scene__copy {
  top: 35%;
  right: var(--gutter);
}

.case-scene--whole .case-scene__media img {
  object-position: 52% 50%;
}

.case-scene--mechanism .case-scene__media {
  top: 26%;
  right: var(--gutter);
  width: 40.5%;
  height: 50%;
}

.case-scene--mechanism .case-scene__copy {
  top: 31%;
  left: var(--gutter);
  width: min(38vw, 630px);
}

.case-scene--mechanism .case-scene__media img {
  object-position: 52% 48%;
}

.case-scene--process .case-scene__media {
  top: 15%;
  left: var(--gutter);
  width: calc(100% - var(--gutter) * 2);
  height: 72%;
}

.case-scene--process .case-scene__media::after {
  background: linear-gradient(90deg, rgba(5, 7, 8, .62), rgba(5, 7, 8, .02) 60%, rgba(5, 7, 8, .18));
}

.case-scene--process .case-scene__copy {
  top: 32%;
  left: 20%;
  width: min(40vw, 650px);
}

.case-scene--process .case-scene__copy>p:last-child {
  color: #e0e3e2;
}

.case-scene--control .case-scene__media {
  top: 26%;
  left: var(--gutter);
  width: 40.5%;
  height: 50%;
}


.case-scene--control .case-scene__copy {
  top: 31%;
  right: var(--gutter);
  width: min(38vw, 620px);
}

.case-scene--control .case-scene__media img {
  object-position: 54% 45%;
}

.case-scene--film .case-scene__media {
  top: 15%;
  left: var(--gutter);
  width: calc(100% - var(--gutter) * 2);
  height: 72%;
}

.case-scene--film .case-scene__media::after {
  background: linear-gradient(90deg, rgba(5, 7, 8, .62), rgba(5, 7, 8, .02) 60%, rgba(5, 7, 8, .18));
}

.case-scene--film .case-scene__copy {
  top: 32%;
  left: 20%;
  width: min(40vw, 650px);
}

.case-scene--film .case-scene__copy>p:last-child {
  color: #e0e3e2;
}

.case-scene__film-note {
  position: absolute;
  z-index: 4;
  right: calc(var(--gutter) + 22px);
  bottom: 13%;
  display: flex;
  align-items: center;
  gap: 14px;
  color: #e3e6e5;
  font: 11px/1 "Arial Narrow", sans-serif;
  letter-spacing: .12em;
}

.case-scene__film-note i {
  width: 84px;
  height: 1px;
  background: var(--orange);
}

.case-sequence__chapters {
  position: absolute;
  z-index: 8;
  right: var(--gutter);
  bottom: 0;
  left: var(--gutter);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(158, 167, 169, .38);
  list-style: none;
}

.case-sequence__chapters li {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 58px;
  padding: 0 clamp(10px, 1.2vw, 22px);
  border-right: 1px solid rgba(158, 167, 169, .24);
  color: #6f7779;
  font-size: 13px;
  transition: color 180ms ease, background-color 180ms ease;
}

.case-sequence__chapters li:first-child {
  border-left: 1px solid rgba(158, 167, 169, .24);
}

.case-sequence__chapters li b {
  color: #7f8587;
  font: 10px/1 "Arial Narrow", sans-serif;
}

.case-sequence__chapters li.is-active {
  background: rgba(240, 130, 0, .11);
  color: #f2f4f3;
}

.case-sequence__chapters li.is-active b {
  color: var(--orange);
}

.case-sequence__progress {
  position: absolute;
  z-index: 10;
  right: 0;
  bottom: 0;
  left: 0;
  height: 6px;
  background: #272c2e;
}

.case-sequence__progress i {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, #f08200, #da4f32 28%, #285fb0 58%, #12805e 82%, #e9a11a);
  transform: scaleX(0);
  transform-origin: left;
}

/* ---------- Section: Platform (White/Light modern grid design as Image 2) ---------- */
.platform {
  position: relative;
  z-index: 4;
  background: #f4f6f5;
  background-image: radial-gradient(rgba(0, 0, 0, 0.08) 1px, transparent 1px);
  background-size: 24px 24px;
  color: #111415;
  padding-top: clamp(80px, 20vh, 240px);
  padding-bottom: clamp(80px, 20vh, 240px);
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.platform__inner {
  display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(320px, 1.4fr);
  gap: clamp(40px, 5.5vw, 85px);
  align-items: center;
}

.platform__header {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.platform__header-logo {
  width: 240px;
  max-width: 100%;
  margin-bottom: 72px;
}

.platform__header-logo img {
  display: block;
  width: 100%;
  height: auto;
}

.platform__header .scene-label {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--orange);
  font: 13px/1.2 "Arial Narrow", sans-serif;
  letter-spacing: .14em;
  text-transform: uppercase;
  margin-bottom: 18px;
  font-weight: 600;
}

.scene-label__vi-icon {
  width: 24px;
  height: 24px;
  object-fit: contain;
  display: inline-block;
  flex-shrink: 0;
}

.platform__header h2 {
  font-size: clamp(34px, 3.6vw, 58px);
  line-height: 1.15;
  letter-spacing: -.03em;
  color: #111415;
  margin-bottom: 22px;
}

.platform__lead {
  font-size: clamp(14px, 1.05vw, 17px);
  line-height: 1.75;
  color: #595656;
  max-width: 480px;
}

/* 2x2 网格卡片 */
.platform-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

/* 旧卡片水印保留在结构中但不再显示，品牌 Logo 已移至左侧标题栏。 */
.platform-grid__bg-logo {
  display: none;
}

.platform-grid__bg-logo img,
.platform-grid__bg-logo svg {
  width: 100%;
  height: auto;
  display: block;
}

.platform-card {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  padding: clamp(26px, 3.5vw, 48px);
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(12px);
  /* border: 1px solid rgba(0, 0, 0, 0.08); */
  border-radius: 16px;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  border: none;
  font: inherit;
  text-align: left;
  width: 100%;
  transition: background-color 280ms ease, border-color 280ms ease, transform 280ms ease;
  /* 规则限制：不使用 box-shadow 投影 */
}

/* Hover 状态：高亮变纯白色背景，边框高亮，图标变主色 */
.platform-card:hover {
  background: #ffffff;
  border-color: rgba(240, 130, 0, 0.45);
}

.platform-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.04);
  color: #4a504e;
  margin-bottom: 24px;
  transition: color 280ms ease, background-color 280ms ease;
}

.platform-card:hover .platform-card__icon {
  background: rgba(240, 130, 0, 0.1);
  color: var(--orange);
}

.platform-card__title {
  font-size: clamp(18px, 1.3vw, 22px);
  font-weight: 700;
  color: #111415;
  margin-bottom: 12px;
  line-height: 1.3;
}

.platform-card__desc {
  font-size: clamp(13px, 0.95vw, 15px);
  line-height: 1.65;
  color: #666666;
  margin: 0;
}

/* ── 微信小程序扫码弹窗 ── */
.miniapp-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100vw;
  height: 100vh;
  max-width: 100vw;
  max-height: 100vh;
  margin: 0;
  padding: 24px;
  border: 0;
  background: transparent;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 260ms ease, visibility 260ms ease;
}

.miniapp-modal[open],
.miniapp-modal.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.miniapp-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(14, 18, 20, 0.65);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.miniapp-modal__panel {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: min(92vw, 380px);
  padding: 36px 32px 32px;
  border-radius: 20px;
  background: #ffffff;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.2), 0 0 0 1px rgba(0, 0, 0, 0.05);
  text-align: center;
  transform: scale(0.92) translateY(10px);
  transition: transform 300ms cubic-bezier(0.16, 1, 0.3, 1);
}

.miniapp-modal[open] .miniapp-modal__panel,
.miniapp-modal.is-active .miniapp-modal__panel {
  transform: scale(1) translateY(0);
}

.miniapp-modal__close {
  position: absolute;
  top: 16px;
  right: 16px;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 0;
  border-radius: 50%;
  background: #f2f4f3;
  color: #666;
  cursor: pointer;
  transition: background-color 200ms ease, color 200ms ease, transform 200ms ease;
}

.miniapp-modal__close:hover {
  background: #e4e7e6;
  color: #111;
  transform: rotate(90deg);
}

.miniapp-modal__badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(240, 130, 0, 0.1);
  color: var(--orange);
  font: 700 11px/1.2 var(--font-body);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.miniapp-modal__title {
  font-size: 22px;
  font-weight: 700;
  color: #111415;
  margin: 0 0 20px;
  line-height: 1.25;
}

.miniapp-modal__qr-wrap {
  display: grid;
  place-items: center;
  width: 210px;
  height: 210px;
  padding: 12px;
  border-radius: 16px;
  background: #fafbfa;
  border: 1px solid #e8ece9;
  margin-bottom: 18px;
}

.miniapp-modal__qrcode {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 8px;
  display: block;
}

.miniapp-modal__hint {
  font-size: 16px;
  font-weight: 700;
  color: #111415;
  margin: 0 0 6px;
  letter-spacing: 0.02em;
}

.miniapp-modal__subhint {
  font-size: 12px;
  color: #888d8b;
  margin: 0;
  line-height: 1.5;
}

.trust {
  z-index: 3;
  overflow: hidden;
  background: #e8eae7;
}

.trust::after {
  width: 34%;
  background: #d8ded9;
  clip-path: none;
}

.trust__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.4fr .6fr;
  gap: clamp(50px, 10vw, 190px);
  align-items: end;
  min-height: 92svh;
  padding-top: var(--section-pad);
  padding-bottom: var(--section-pad);
}

.trust h2 {
  margin-top: 46px;
  max-width: 820px;
  font-size: clamp(52px, 6.4vw, 96px);
  line-height: .94;
  letter-spacing: -.035em;
}

.trust__ledger {
  display: grid;
  gap: 0;
  margin: 0;
  border-top: 1px solid #8b938e;
}

.trust__ledger div {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 22px;
  padding: 20px 0;
  border-bottom: 1px solid #aeb5b0;
}

.trust__ledger dt {
  color: #59615c;
  font-size: 13px;
  font-weight: 700;
}

.trust__ledger dd {
  margin: 0;
  color: #252a27;
  font-size: clamp(16px, 1.2vw, 19px);
  line-height: 1.65;
}

.trust__rail {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 26px;
  width: max-content;
  padding: 19px 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  color: var(--ink);
  font: 13px/1 "Arial Narrow", sans-serif;
  letter-spacing: .14em;
}

.trust__rail span:first-child {
  margin-left: var(--gutter);
}

.trust__rail i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange);
}

.contact {
  position: relative;
  z-index: 4;
  overflow: hidden;
  background: #214f8d;
  color: var(--paper);
}

.contact__shape {
  position: absolute;
  right: -18vw;
  top: -30vw;
  width: 46vw;
  height: 46vw;
  min-width: 420px;
  min-height: 420px;
  border: clamp(50px, 6vw, 110px) solid var(--yellow);
  border-radius: 50%;
}

.contact__shape::after {
  content: "";
  position: absolute;
  inset: 20%;
  border: 1px solid var(--paper);
  border-radius: 50%;
}

.contact__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.5fr .5fr;
  gap: 60px;
  align-items: end;
  min-height: 100svh;
  padding-top: var(--section-pad);
  padding-bottom: var(--section-pad);
}

.contact .scene-label {
  position: absolute;
  top: var(--section-pad);
  left: var(--gutter);
  color: var(--yellow);
}

.contact h2 {
  max-width: 900px;
  font-size: clamp(52px, 6.4vw, 96px);
  line-height: .94;
  letter-spacing: -.035em;
}

.contact__actions {
  position: relative;
  z-index: 2;
  max-width: 430px;
}

.contact__actions>p:first-child {
  color: #edf2ff;
  font-size: clamp(17px, 1.25vw, 20px);
  line-height: 1.8;
}

.contact__meta {
  margin-top: 20px;
  color: #cddcf1;
  font-size: 13px;
  line-height: 1.6;
}

.text-action {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 62px;
  margin-top: 34px;
  padding: 0 18px;
  border: 1px solid var(--paper);
  background: transparent;
  color: var(--paper);
  cursor: pointer;
  transition: background-color 200ms ease, border-color 200ms ease, color 200ms ease, transform 120ms ease;
}

.text-action b {
  color: var(--yellow);
  font-size: 24px;
  font-weight: 400;
}

.text-action:active {
  transform: translateY(1px);
}

.copy-feedback {
  min-height: 1.5em;
  margin-top: 12px;
  color: var(--yellow);
  font-size: 12px;
}

@media (pointer: fine) and (hover: hover) {
  .machine-status:hover {
    color: var(--orange);
  }

  .machine-status:hover::before,
  .machine-status:hover::after {
    border-color: #ff9d2e;
    animation-duration: 1.8s;
  }

  .machine-parts li:not(.is-active):hover button {
    border-color: rgba(240, 130, 0);
    background: #fff;
    /* color: var(--ink); */
  }

  /* .machine-parts li:not(.is-active):hover b {
    background: rgba(240, 130, 0, .14);
    color: #9a5200;
  } */

  .text-action:hover {
    background: var(--yellow);
    border-color: var(--yellow);
    color: var(--ink);
  }

  .text-action:hover b {
    color: var(--ink);
  }
}

@media (min-width: 768px) {
  .page-progress {
    display: flex;
  }
}

@media (max-width: 900px) {
  .machine-fallback {
    transform: translateX(12%);
  }

  .trust__inner {
    grid-template-columns: 1fr;
    align-content: center;
  }

  .contact__inner {
    grid-template-columns: 1fr;
    align-content: end;
  }

  .contact__actions {
    margin-left: auto;
  }
}

@media (min-width: 768px) and (max-width: 900px) {
  .case-scene--process .case-scene__copy {
    width: min(52vw, 500px);
  }

  .case-scene--process .case-scene__copy h3 {
    font-size: clamp(38px, 5vw, 50px);
  }
}

@media (max-width: 767px) {
  .machine-detail {
    z-index: 7;
  }

  .machine-scene__pin {
    height: 100svh;
    height: 100dvh;
    min-height: 680px;
  }

  .machine-canvas {
    inset: 0;
    height: 100%;
    transform: none;
  }

  .machine-fallback {
    top: 42%;
    height: 49%;
    transform: none;
    object-position: 50% 70%;
  }

  .machine-scene__grid {
    top: 31%;
    right: -35%;
    width: 125vw;
  }

  .machine-scene__title {
    top: calc(var(--header-h) + 40px);
    font-size: 32px;
  }

  .machine-status {
    top: calc(var(--header-h) + 4px);
    right: 6px;
    bottom: auto;
    width: 108px;
    min-height: 82px;
  }

  .machine-status::before,
  .machine-status::after {
    width: 68px;
  }

  .machine-status__label {
    font-size: 13px;
  }

  .machine-interaction-note {
    right: 20px;
    top: 108px;
    flex-direction: column;
    gap: 4px;
    font-size: 10px;
  }

  .machine-carousel {
    padding: 0 16px 22px;
    gap: 14px;
  }

  .machine-carousel__arrow {
    width: 40px;
    height: 40px;
    font-size: 18px;
  }

  .machine-carousel__arrow--prev {
    left: 8px;
  }

  .machine-carousel__arrow--next {
    right: 8px;
  }

  .machine-carousel__rail {
    gap: 14px;
  }

  .machine-detail__back {
    top: calc(var(--header-h) + 40px);
    left: 16px;
    padding: 8px 14px;
    font-size: 12px;
  }

  .machine-detail__name {
    top: calc(var(--header-h) + 100px);
    left: 16px;
    max-width: 220px;
    line-height: 1.2;
  }

  .machine-detail__panel {
    top: auto;
    right: 16px;
    bottom: 82px;
    left: 16px;
    width: auto;
    padding: 16px 18px;
  }

  .machine-parts {
    top: auto;
    right: 16px;
    bottom: 16px;
    left: 16px;
    flex-direction: row;
    gap: 6px;
    width: auto;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scrollbar-width: none;
  }

  .machine-parts::-webkit-scrollbar {
    display: none;
  }

  .machine-parts li {
    flex: 0 0 auto;
  }

  .machine-parts button {
    min-height: 44px;
    width: auto;
    padding: 7px 14px 7px 8px;
  }

  .machine-detail__panel h3 {
    font-size: 25px;
  }

  .machine-detail__panel-hint {
    display: none;
  }

  .case-sequence__pin {
    min-height: 620px;
  }

  .case-grid-line--v1 {
    left: 20px;
  }

  .case-grid-line--v3 {
    right: 20px;
  }

  .case-grid-line--v2 {
    left: 52%;
  }

  .case-grid-line--h1 {
    top: 34%;
  }

  .case-grid-line--h2 {
    top: 78%;
  }

  .case-grid-node--1 {
    top: 34%;
    left: 20px;
  }

  .case-grid-node--2 {
    top: 34%;
    left: 52%;
  }

  .case-grid-node--3 {
    top: 34%;
    left: calc(100% - 20px);
  }

  .case-grid-node--4 {
    top: 78%;
    left: 20px;
  }

  .case-grid-node--5 {
    top: 78%;
    left: 52%;
  }

  .case-grid-node--6 {
    top: 78%;
    left: calc(100% - 20px);
  }

  .case-sequence__intro {
    justify-content: flex-start;
    padding-top: calc(var(--header-h) + 11vh);
  }

  .case-sequence__intro h2 {
    margin-top: 18vh;
    font-size: 40px;
    line-height: 1;
  }

  .case-sequence__intro h2 span:nth-child(2) {
    margin-left: 0vw;
    margin-top: 12px;
  }

  .case-sequence__intro h2 em {
    margin-top: 5vh;
    margin-left: 4vw;
    font-size: .37em;
  }

  .case-sequence__intro h2 strong {
    margin-left: 4vw;
    color: var(--orange);
  }

  .case-sequence__lead {
    top: auto;
    right: 20px;
    bottom: 16vh;
    width: calc(100% - 64px);
    max-width: 390px;
    font-size: 15px;
  }

  .case-sequence__instruction {
    left: 20px;
    bottom: 1vh;
    font-size: 9px;
  }

  .case-scene {
    display: flex;
    flex-direction: column;
    padding: calc(var(--header-h) + 18px) 20px 68px;
  }

  .case-scene__media,
  .case-scene--whole .case-scene__media,
  .case-scene--mechanism .case-scene__media,
  .case-scene--process .case-scene__media,
  .case-scene--control .case-scene__media {
    position: relative;
    top: auto;
    right: auto;
    bottom: auto;
    left: auto;
    z-index: 1;
    order: 2;
    flex: 1 1 auto;
    width: 100%;
    min-height: 0;
    height: auto;
    margin-top: 14px;
  }

  .case-scene__copy,
  .case-scene--whole .case-scene__copy,
  .case-scene--mechanism .case-scene__copy,
  .case-scene--process .case-scene__copy,
  .case-scene--control .case-scene__copy {
    position: relative;
    top: auto;
    right: auto;
    left: auto;
    z-index: 2;
    order: 1;
    flex: 0 0 auto;
    width: auto;
    max-width: none;
  }

  .case-scene__copy h3 {
    margin-top: 12px;
    font-size: clamp(28px, 7.6vw, 40px);
    line-height: 1.12;
  }
  .case-scene--process .case-scene__copy h3 {
    color: #111315;
  }
   .case-scene--process .case-scene__copy>p:last-child {
    color: #9a9fa0;
  }

  .case-scene__copy>p:last-child {
    margin-top: 10px;
    max-width: none;
    font-size: 13px;
    line-height: 1.55;
  }

  .case-scene__step {
    font-size: 12px;
  }

  .case-scene__step b {
    font-size: 17px;
  }

  .case-scene__depth {
    display: none;
  }

  .case-scene--process .case-scene__media::after {
    background: linear-gradient(180deg, rgba(5, 7, 8, .08), rgba(5, 7, 8, .28));
  }

  /* 05 运行：保持图上叠字，不走上下流式布局 */
  .case-scene--film {
    display: block;
    padding: 0;
  }

  .case-scene--film .case-scene__media {
    position: absolute;
    top: calc(var(--header-h) + 10px);
    right: 20px;
    bottom: 62px;
    left: 20px;
    z-index: 1;
    order: unset;
    flex: none;
    width: auto;
    height: auto;
    margin-top: 0;
  }

  .case-scene--film .case-scene__media::after {
    background: linear-gradient(180deg, rgba(2, 4, 5, .28), rgba(2, 4, 5, .78));
  }

  .case-scene--film .case-scene__copy {
    position: absolute;
    top: auto;
    right: 42px;
    bottom: 104px;
    left: 42px;
    z-index: 3;
    order: unset;
    width: auto;
    flex: none;
  }

  .case-scene--film .case-scene__copy h3 {
    font-size: clamp(36px, 10.2vw, 50px);
  }

  .case-scene--film .case-scene__copy>p:last-child {
    max-width: 300px;
    color: #e4e7e6;
  }

  .case-scene__film-note {
    right: 42px;
    bottom: 78px;
    font-size: 9px;
  }

  .case-scene__film-note i {
    width: 44px;
  }

  .case-sequence__chapters {
    right: 20px;
    left: 20px;
  }

  .case-sequence__chapters li {
    justify-content: center;
    min-height: 52px;
    padding: 0 5px;
    border-right-color: rgba(158, 167, 169, .18);
  }

  .case-sequence__chapters li span {
    display: none;
  }

  .case-sequence__chapters li b {
    font-size: 9px;
  }

  .platform__inner {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .platform-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .trust__inner {
    grid-template-columns: 1fr;
    min-height: 90svh;
  }

  .trust h2 {
    font-size: clamp(52px, 15vw, 72px);
  }

  .trust__ledger {
    width: 92%;
    margin-left: auto;
  }

  .trust__rail {
    font-size: 10px;
  }

  .contact__shape {
    right: -260px;
    top: -190px;
  }

  .contact__inner {
    grid-template-columns: 1fr;
    min-height: 94svh;
    align-content: end;
  }

  .contact h2 {
    font-size: clamp(46px, 12.4vw, 60px);
    line-height: 1;
    letter-spacing: -.035em;
  }

  .contact__actions {
    margin-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .machine-scene__pin {
    min-height: 100svh;
  }

  .machine-fallback {
    opacity: 1 !important;
  }

  .machine-canvas {
    display: none;
  }

  .case-sequence__pin {
    height: auto;
    min-height: 0;
    overflow: visible;
  }

  .case-sequence__grid,
  .case-sequence__chapters,
  .case-sequence__progress {
    display: none;
  }

  .case-sequence__intro {
    position: relative;
    min-height: 88svh;
  }

  .case-scene {
    position: relative;
    min-height: 100svh;
    visibility: visible;
    opacity: 1;
  }

  .machine-scene.is-interactive:not(.is-gate-released) .machine-status::before {
    animation: none;
    opacity: .68;
    transform: translate(-50%, -50%) scale(1);
  }

  .machine-status::after {
    display: none;
  }
}