/* 样式全部挂在 .why-us 下，便于嵌入官网、避免污染全局 */

/* ── Section ── */
.why-us {
  --orange: #FF753B;
  --orange-deep: #E85F28;
  --orange-light: #FF9A68;
  --orange-glow: rgba(255, 117, 59, 0.55);
  --blue: #0062FD;
  --blue-deep: #004EDB;
  --blue-light: #3D8AFF;
  --blue-glow: rgba(0, 98, 253, 0.55);
  --bg-start: #F5F0ED;
  --bg-end: #DDE9F9;
  --text: #333;
  --text-muted: #333;

  max-width: 1440px;
  margin: 0 auto;
  padding: 72px 32px 96px;
  font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", sans-serif;
  background: linear-gradient(to right, var(--bg-start), var(--bg-end));
  color: var(--text);
  line-height: 1.5;
  overflow-x: clip;
  -webkit-text-size-adjust: 100%;
}

.why-us *,
.why-us *::before,
.why-us *::after {
  box-sizing: border-box;
}

.why-us h2,
.why-us h3,
.why-us h4,
.why-us p {
  margin: 0;
  padding: 0;
}

.why-us__header {
  /* 不用 <header>：官网常给 header 设 fixed/sticky 顶栏样式 */
  position: static;
  top: auto;
  left: auto;
  right: auto;
  z-index: auto;
  width: auto;
  text-align: center;
  margin-bottom: 56px;
}

.why-us__title {
  font-size: 24px;
  font-weight: 700;
  color: #1a1a1a;
  letter-spacing: 2px;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.why-us__subtitle {
  margin-top: 14px;
  font-size: clamp(12px, 1.3vw, 14px);
  color: var(--text-muted);
  line-height: 1.8;
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.8s ease 0.12s, transform 0.8s ease 0.12s;
}

.why-us.is-visible .why-us__title,
.why-us.is-visible .why-us__subtitle {
  opacity: 1;
  transform: translateY(0);
}

/* ── Body Grid ── */
.why-us__body {
  display: grid;
  grid-template-columns: minmax(200px, 1fr) minmax(500px, 660px) minmax(200px, 1fr);
  gap: 20px 28px;
  align-items: center;
}

/* ── Side text columns ── */
.why-us__col {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 52px;
  min-height: 400px;
}

.why-us__col--left { align-items: flex-end; text-align: left; }
.why-us__col--right { align-items: flex-start; text-align: left; }

.why-us__item {
  max-width: 300px;
  opacity: 0;
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.why-us__col--left .why-us__item { transform: translateX(-30px); }
.why-us__col--right .why-us__item { transform: translateX(30px); }

.why-us.is-visible .why-us__item {
  opacity: 1;
  transform: translateX(0);
}

.why-us.is-visible .why-us__col--left .why-us__item:nth-child(1) { transition-delay: 0.35s; }
.why-us.is-visible .why-us__col--left .why-us__item:nth-child(2) { transition-delay: 0.5s; }
.why-us.is-visible .why-us__col--left .why-us__item:nth-child(3) { transition-delay: 0.65s; }
.why-us.is-visible .why-us__col--right .why-us__item:nth-child(1) { transition-delay: 0.35s; }
.why-us.is-visible .why-us__col--right .why-us__item:nth-child(2) { transition-delay: 0.5s; }
.why-us.is-visible .why-us__col--right .why-us__item:nth-child(3) { transition-delay: 0.65s; }

.why-us__item.is-active .why-us__content h3 {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.why-us__content h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.4;
}

.why-us__item--orange .why-us__content h3 { color: var(--orange-deep); }
.why-us__item--blue .why-us__content h3 { color: var(--blue-deep); }

.why-us__content p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ══════════════════════════════════════
   中间核心图：左右大圆 + 上下矩形条 + 两侧轨道圆
   ══════════════════════════════════════ */
.why-us__diagram {
  position: relative;
  width: 100%;
  aspect-ratio: 1.55 / 1;
  max-width: 660px;
  margin: 0 auto;
  /* 尺寸变量：大圆直径 = 上矩形 + 下矩形 */
  --diag-aspect: 1.55;
  --side-n: 44;
  --orb-n: 26;
  --ring-n: 46;
  --side-inset: 7.5%;
  --side-size: 44%;
  --orb-r: 26%;
  --ring-r: 46%;
  /* 纯 CSS 对齐：随 diagram 缩放一起变，避免 JS 实测造成掉落跳动 */
  --orb-diameter: calc(var(--orb-n) * 2 * var(--side-n) * var(--diag-aspect) * 0.01%);
  --orb-top: calc(50% - var(--orb-diameter) / 2);
  /* 连接条左右：从圆心附近起止（约 0.38 倍直径内收） */
  --bridge-left: calc(
    var(--side-inset)
    + var(--side-n) * (50 - var(--orb-n)) * 0.01%
    + var(--orb-n) * 2 * var(--side-n) * 0.38 * 0.01%
  );
  --bridge-right: var(--bridge-left);
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.9s ease 0.15s, transform 0.9s ease 0.15s;
}

.why-us.is-visible .why-us__diagram {
  opacity: 1;
  transform: scale(1);
}

.why-us__glow-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

/* ── 上下圆角连接条：总高=大圆直径，两端收入圆内 ── */
.why-us__bridge {
  position: absolute;
  left: var(--bridge-left);
  right: var(--bridge-right);
  top: var(--orb-top);
  height: var(--orb-diameter);
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 0;
  pointer-events: none;
}

.why-us__bar {
  position: relative;
  width: 100%;
  height: 50%;
  flex: 0 0 50%;
  overflow: hidden;
  /* 圆角半径 = 半高，两端呈半圆，贴合大圆 */
  border-radius: 999px;
  opacity: 0;
  transform: scaleX(0.4);
  transition: opacity 0.7s ease, transform 0.7s ease;
  animation: bar-shimmer 2.8s ease-in-out infinite;
}

.why-us__bar--top {
  background: linear-gradient(
    90deg,
    rgba(255, 117, 59, 0.95) 0%,
    rgba(255, 154, 104, 0.75) 55%,
    rgba(255, 176, 136, 0.012) 100%
  );
}

.why-us__bar--bottom {
  background: linear-gradient(
    270deg,
    rgba(0, 98, 253, 0.95) 0%,
    rgba(61, 138, 255, 0.75) 55%,
    rgba(112, 168, 255, 0.012) 100%
  );
  animation-direction: reverse;
}

.why-us.is-visible .why-us__bar--top {
  opacity: 1;
  transform: scaleX(1);
  transition-delay: 0.45s;
}

.why-us.is-visible .why-us__bar--bottom {
  opacity: 1;
  transform: scaleX(1);
  transition-delay: 0.6s;
}

.why-us__bar-label {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  display: inline-flex;
  align-items: center;
  gap: 0px;
  font-size: clamp(10px, 1.1vw, 12px);
  font-weight: 600;
  color: #fff;
  letter-spacing: 1px;
  white-space: nowrap;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  z-index: 2;
}

/* 顶部条：文字右侧三角箭头，右实左透 */
.why-us__bar--top .why-us__bar-label::after {
  content: "";
  flex-shrink: 0;
  width: 1.6em;
  height: 1.85em;
  clip-path: polygon(0 0, 100% 50%, 0 100%);
  background: linear-gradient(
    to left,
    #fe681c 0%,
    rgba(254, 104, 28, 0) 100%
  );
}

/* 底部条：文字左侧三角箭头，左实右透 */
.why-us__bar--bottom .why-us__bar-label::before {
  content: "";
  flex-shrink: 0;
  width: 1.6em;
  height: 1.85em;
  clip-path: polygon(100% 0, 0 50%, 100% 100%);
  background: linear-gradient(
    to right,
    #0062fd 0%,
    rgba(0, 98, 253, 0) 100%
  );
}

@keyframes bar-shimmer {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(0.9); }
}

/* ── 左右两侧（轨道圆 + 大圆 + 三个球）── */
.why-us__side {
  position: absolute;
  top: 50%;
  width: var(--side-size);
  aspect-ratio: 1;
  transform: translateY(-50%);
  z-index: 3;
}

.why-us__side--left { left: var(--side-inset); }
.why-us__side--right { right: var(--side-inset); }

/* 轨道圆环（完整圆圈，套在大圆外面；靠中间一侧渐隐） */
.why-us__ring {
  position: absolute;
  left: 50%;
  top: 50%;
  width: calc(var(--ring-r) * 2);
  height: calc(var(--ring-r) * 2);
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: none;
  z-index: 1;
  opacity: 0;
  transition: opacity 0.8s ease;
  /* 镂空成圆环，线宽约 2.5px */
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 2.5px), #000 calc(100% - 2.5px));
  mask: radial-gradient(farthest-side, transparent calc(100% - 2.5px), #000 calc(100% - 2.5px));
}

.why-us__side--left .why-us__ring {
  /* 左侧：外侧实色，越靠中间（右侧）越透明 */
  background: conic-gradient(
    from 0deg,
    rgba(255, 117, 59, 0.75) 0deg,
    rgba(255, 117, 59, 0.2) 60deg,
    rgba(255, 117, 59, 0) 90deg,
    rgba(255, 117, 59, 0.2) 120deg,
    rgba(255, 117, 59, 0.75) 180deg,
    rgba(255, 117, 59, 1) 270deg,
    rgba(255, 117, 59, 0.75) 360deg
  );
}

.why-us__side--right .why-us__ring {
  /* 右侧：外侧实色，越靠中间（左侧）越透明 */
  background: conic-gradient(
    from 0deg,
    rgba(0, 98, 253, 0.75) 0deg,
    rgba(0, 98, 253, 1) 90deg,
    rgba(0, 98, 253, 0.75) 180deg,
    rgba(0, 98, 253, 0.2) 240deg,
    rgba(0, 98, 253, 0) 270deg,
    rgba(0, 98, 253, 0.2) 300deg,
    rgba(0, 98, 253, 0.75) 360deg
  );
}

.why-us.is-visible .why-us__ring {
  opacity: 1;
}

.why-us.is-visible .why-us__side--left .why-us__ring { transition-delay: 0.35s; }
.why-us.is-visible .why-us__side--right .why-us__ring { transition-delay: 0.5s; }

/* 大圆 */
.why-us__orb {
  position: absolute;
  left: 50%;
  top: 50%;
  width: calc(var(--orb-r) * 2);
  height: calc(var(--orb-r) * 2);
  transform: translate(-50%, -50%);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
  z-index: 3;
}

.why-us__orb--orange {
  background:
    radial-gradient(circle at 38% 30%, rgba(255, 220, 190, 0.4) 0%, transparent 42%),
    radial-gradient(circle at 65% 75%, rgba(232, 70, 20, 0.35) 0%, transparent 48%),
    linear-gradient(150deg, #FFB088 0%, #FF753B 38%, #E85F28 72%, #D44E1A 100%);
  box-shadow:
    0 0 45px var(--orange-glow),
    0 0 90px rgba(232, 95, 40, 0.25),
    0 6px 28px rgba(232, 95, 40, 0.2),
    inset 0 -10px 28px rgba(255, 255, 255, 0.05),
    inset 0 4px 14px rgba(255, 255, 255, 0.08);
  animation: breathe-orange 4s ease-in-out infinite;
}

.why-us__orb--blue {
  background:
    radial-gradient(circle at 62% 30%, rgba(180, 210, 255, 0.35) 0%, transparent 42%),
    radial-gradient(circle at 35% 75%, rgba(0, 60, 200, 0.35) 0%, transparent 48%),
    linear-gradient(210deg, #70A8FF 0%, #0062FD 38%, #004EDB 72%, #003EC4 100%);
  box-shadow:
    0 0 45px var(--blue-glow),
    0 0 90px rgba(0, 78, 219, 0.28),
    0 6px 28px rgba(0, 78, 219, 0.22),
    inset 0 -10px 28px rgba(255, 255, 255, 0.05),
    inset 0 4px 14px rgba(255, 255, 255, 0.08);
  animation: breathe-blue 4s ease-in-out infinite 2s;
}

@keyframes breathe-orange {
  0%, 100% { transform: translate(-50%, -50%) scale(1); }
  50% { transform: translate(-50%, -50%) scale(1.035); }
}

@keyframes breathe-blue {
  0%, 100% { transform: translate(-50%, -50%) scale(1); }
  50% { transform: translate(-50%, -50%) scale(1.035); }
}

.why-us__orb h4 {
  font-size: clamp(14px, 2vw, 20px);
  font-weight: 400;
  letter-spacing: 2px;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
  line-height: 1.3;
}

.why-us__orb-en {
  margin-top: 3px;
  font-size: clamp(8px, 0.9vw, 10px);
  opacity: 0.88;
}

.why-us__orb-tag {
  margin-top: 8px;
  padding: 3px 12px;
  border-radius: 20px;
  font-size: 10px;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.35);
}

/* 轨道上的三个小球（沿圆环角度定位） */
.why-us__node-slot {
  position: absolute;
  inset: 0;
  transform: rotate(var(--angle));
  pointer-events: none;
  z-index: 4;
}

.why-us__node {
  position: absolute;
  top: calc(50% - var(--ring-r));
  left: 50%;
  width: clamp(34px, 5vw, 44px);
  height: clamp(34px, 5vw, 44px);
  transform: translate(-50%, -50%) rotate(calc(-1 * var(--angle)));
  border-radius: 50%;
  border: none;
  color: #fff;
  font-size: clamp(14px, 1.8vw, 18px);
  font-weight: 400;
  font-family: inherit;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: auto;
  opacity: 0;
  transform: translate(-50%, -50%) rotate(calc(-1 * var(--angle))) scale(0.4);
  transition: opacity 0.5s ease, transform 0.5s ease, box-shadow 0.3s ease;
}

.why-us.is-visible .why-us__node {
  opacity: 1;
  transform: translate(-50%, -50%) rotate(calc(-1 * var(--angle))) scale(1);
}

.why-us__side--left .why-us__node-slot:nth-child(4) .why-us__node { transition-delay: 0.65s; }
.why-us__side--left .why-us__node-slot:nth-child(5) .why-us__node { transition-delay: 0.78s; }
.why-us__side--left .why-us__node-slot:nth-child(6) .why-us__node { transition-delay: 0.91s; }
.why-us__side--right .why-us__node-slot:nth-child(4) .why-us__node { transition-delay: 0.65s; }
.why-us__side--right .why-us__node-slot:nth-child(5) .why-us__node { transition-delay: 0.78s; }
.why-us__side--right .why-us__node-slot:nth-child(6) .why-us__node { transition-delay: 0.91s; }

.why-us__node--orange {
  background: linear-gradient(145deg, var(--orange-light), var(--orange-deep));
  box-shadow: 0 3px 14px rgba(255, 117, 59, 0.5);
}

.why-us__node--blue {
  background: linear-gradient(145deg, var(--blue-light), var(--blue-deep));
  box-shadow: 0 3px 14px rgba(0, 98, 253, 0.5);
}

.why-us__node.is-active,
.why-us__node:hover {
  transform: translate(-50%, -50%) rotate(calc(-1 * var(--angle))) scale(1.15);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.18);
}

/* ── Responsive：1024 平板布局 / 768 手机微调 ── */
@media (max-width: 1024px) {
  .why-us {
    padding: 56px 16px 72px;
    background: linear-gradient(to bottom, var(--bg-start), var(--bg-end));
  }

  .why-us__header {
    margin-bottom: 28px;
  }

  /* 中间图：双圆改为上下结构 */
  .why-us__diagram {
    max-width: 340px;
    width: 100%;
    aspect-ratio: 1 / 1.26;
    --diag-aspect: 0.794;
    --side-n: 68;
    --orb-n: 27;
    --ring-n: 45;
    --side-size: 68%;
    --orb-r: 27%;
    --ring-r: 45%;
    /* 与圆环贴边位移一致，供连接条定位 */
    --side-inset: calc(var(--side-n) * var(--diag-aspect) * (var(--ring-n) - 50) * 0.01%);
    /* 大圆直径：相对宽度 / 相对高度 */
    --orb-d-w: calc(var(--orb-n) * 2 * var(--side-n) * 0.01%);
    --orb-d-h: calc(var(--orb-n) * 2 * var(--side-n) * var(--diag-aspect) * 0.01%);
    /* 连接条起止：与电脑端一致，两端收入圆内（约 0.38 倍直径） */
    --bridge-top: calc(
      var(--side-inset)
      + var(--side-n) * var(--diag-aspect) * (50 - var(--orb-n)) * 0.01%
      + var(--orb-n) * 2 * var(--side-n) * var(--diag-aspect) * 0.38 * 0.01%
    );
    --bridge-bottom: var(--bridge-top);
    overflow: visible;
  }

  /* 橙圆在上、蓝圆在下；用 translate 让轨道圆环外缘贴齐上下边 */
  .why-us__side {
    left: 50%;
    right: auto;
    width: var(--side-size);
  }

  .why-us__side--left {
    top: 0;
    bottom: auto;
    /* (ring-n - 50)%：把圆环外缘移到容器顶边 */
    transform: translateX(-50%) translateY(calc((var(--ring-n) - 50) * 1%));
  }

  .why-us__side--right {
    top: auto;
    bottom: 0;
    /* (50 - ring-n)%：把圆环外缘移到容器底边 */
    transform: translateX(-50%) translateY(calc((50 - var(--ring-n)) * 1%));
  }

  /* 竖向连接区：左右两根竖条，两端伸进圆内（圆盖住圆角，与电脑端一致） */
  .why-us__bridge {
    left: 50%;
    right: auto;
    top: var(--bridge-top);
    bottom: var(--bridge-bottom);
    width: var(--orb-d-w);
    height: auto;
    transform: translateX(-50%);
    flex-direction: row;
    gap: 0;
    border: none;
    outline: none;
    overflow: visible;
    border-radius: 0;
  }

  .why-us__bar {
    width: 50%;
    height: 100%;
    flex: 0 0 50%;
    transform: scaleY(0.4);
    border: none;
    outline: none;
    box-shadow: none;
  }

  .why-us.is-visible .why-us__bar--top,
  .why-us.is-visible .why-us__bar--bottom {
    transform: scaleY(1);
  }

  /* 左条：只圆左侧；上下圆角伸进大圆后被盖住 */
  .why-us__bar--top {
    border-radius: 20px 0 0 20px;
    background: linear-gradient(
      180deg,
      rgba(255, 117, 59, 0.95) 0%,
      rgba(255, 154, 104, 0.75) 55%,
      rgba(255, 176, 136, 0.012) 100%
    );
  }

  /* 右条：只圆右侧 */
  .why-us__bar--bottom {
    border-radius: 0 20px 20px 0;
    background: linear-gradient(
      0deg,
      rgba(0, 98, 253, 0.95) 0%,
      rgba(61, 138, 255, 0.75) 55%,
      rgba(112, 168, 255, 0.012) 100%
    );
  }

  /* 竖排文字：主轴自上而下，::before 在上、::after 在下 */
  .why-us__bar-label {
    gap: 6px;
    font-size: 11px;
    letter-spacing: 3px;
    writing-mode: vertical-rl;
    text-orientation: upright;
    flex-direction: row;
  }

  .why-us__bar--top .why-us__bar-label,
  .why-us__bar--bottom .why-us__bar-label {
    flex-direction: row;
  }

  /* 橙条：箭头在文字下方，朝下 */
  .why-us__bar--top .why-us__bar-label::after {
    width: 1.55em;
    height: 1em;
    clip-path: polygon(0 0, 100% 0, 50% 100%);
    background: linear-gradient(
      to top,
      #fe681c 0%,
      rgba(254, 104, 28, 0) 100%
    );
  }

  /* 蓝条：箭头在文字上方，朝上 */
  .why-us__bar--bottom .why-us__bar-label::before {
    width: 1.55em;
    height: 1em;
    clip-path: polygon(50% 0, 100% 100%, 0 100%);
    background: linear-gradient(
      to bottom,
      #0062fd 0%,
      rgba(0, 98, 253, 0) 100%
    );
  }

  /* 轨道渐隐：外侧实、朝中间（相接侧）透明 */
  .why-us__side--left .why-us__ring {
    /* 上圆：上方实色，朝下（接蓝圆）渐隐 */
    background: conic-gradient(
      from 0deg,
      rgba(255, 117, 59, 1) 0deg,
      rgba(255, 117, 59, 0.85) 50deg,
      rgba(255, 117, 59, 0.35) 100deg,
      rgba(255, 117, 59, 0) 180deg,
      rgba(255, 117, 59, 0.35) 260deg,
      rgba(255, 117, 59, 0.85) 310deg,
      rgba(255, 117, 59, 1) 360deg
    );
  }

  .why-us__side--right .why-us__ring {
    /* 下圆：下方实色，朝上（接橙圆）渐隐 */
    background: conic-gradient(
      from 0deg,
      rgba(0, 98, 253, 0) 0deg,
      rgba(0, 98, 253, 0.35) 100deg,
      rgba(0, 98, 253, 0.85) 150deg,
      rgba(0, 98, 253, 1) 180deg,
      rgba(0, 98, 253, 0.85) 210deg,
      rgba(0, 98, 253, 0.35) 260deg,
      rgba(0, 98, 253, 0) 360deg
    );
  }

  /* 节点改到外侧弧：上圆靠上、下圆靠下 */
  .why-us__side--left .why-us__node-slot:nth-child(3) { --angle: -55deg !important; } /* 01 左上 */
  .why-us__side--left .why-us__node-slot:nth-child(4) { --angle: 0deg !important; }    /* 02 正上 */
  .why-us__side--left .why-us__node-slot:nth-child(5) { --angle: 55deg !important; }  /* 03 右上 */
  .why-us__side--right .why-us__node-slot:nth-child(3) { --angle: -125deg !important; } /* 04 左下 */
  .why-us__side--right .why-us__node-slot:nth-child(4) { --angle: 180deg !important; }  /* 05 正下 */
  .why-us__side--right .why-us__node-slot:nth-child(5) { --angle: 125deg !important; }  /* 06 右下 */

  /* ── 6 条文案环绕核心图 ──
           02
      01  图  03
      04  图  06
           05
  */
  .why-us__body {
    display: grid;
    grid-template-columns: minmax(64px, 1fr) minmax(240px, 340px) minmax(64px, 1fr);
    grid-template-rows: auto auto auto auto;
    grid-template-areas:
      ".   n02 ."
      "n01 dia n03"
      "n04 dia n06"
      ".   n05 .";
    gap: 10px 0;
    align-items: center;
    justify-items: stretch;
  }

  .why-us__diagram {
    grid-area: dia;
    width: 100%;
    margin-block: 18px;
    justify-self: center;
  }

  .why-us__col {
    display: contents;
  }

  .why-us__item {
    max-width: 100%;
    width: 100%;
    padding: 0;
    background: none;
    border-radius: 0;
    display: block;
    transform: translateY(12px);
  }

  .why-us__col--left .why-us__item,
  .why-us__col--right .why-us__item {
    transform: translateY(12px);
  }

  .why-us.is-visible .why-us__item {
    transform: translateY(0);
  }

  /* 环绕时编号已在图上，隐藏文案侧圆点；正文最多 4 行，超出省略 */
  .why-us__item::before {
    display: none;
  }

  .why-us__content h3 {
    font-size: 13px;
    margin-bottom: 4px;
    line-height: 1.45;
    letter-spacing: 0.5px;
  }

  .why-us__content p {
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 4;
    line-clamp: 4;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 11px;
    line-height: 1.5;
    color: var(--text-muted);
  }

  .why-us__item[data-node="01"] {
    grid-area: n01;
    text-align: left;
    align-self: end;
    justify-self: end;
    width: min(100%, 7.6em);
    max-width: 100%;
    padding-bottom: 0;
    margin-right: -14px;
    position: relative;
    z-index: 4;
  }

  .why-us__item[data-node="02"] {
    grid-area: n02;
    text-align: center;
    max-width: 200px;
    justify-self: center;
    position: relative;
    z-index: 4;
    margin-bottom: 6px;
  }

  .why-us__item[data-node="03"] {
    grid-area: n03;
    text-align: left;
    align-self: end;
    justify-self: start;
    width: auto;
    max-width: 100%;
    padding-bottom: 0;
    margin-left: -14px;
    position: relative;
    z-index: 4;
  }

  .why-us__item[data-node="04"] {
    grid-area: n04;
    text-align: left;
    align-self: start;
    justify-self: end;
    width: min(100%, 7.6em);
    max-width: 100%;
    padding-top: 0;
    margin-top: 40px;
    margin-right: -14px;
    position: relative;
    z-index: 4;
  }

  .why-us__item[data-node="05"] {
    grid-area: n05;
    text-align: center;
    max-width: 200px;
    justify-self: center;
    position: relative;
    z-index: 4;
    margin-top: 6px;
  }

  .why-us__item[data-node="06"] {
    grid-area: n06;
    text-align: left;
    align-self: start;
    justify-self: start;
    width: auto;
    max-width: 100%;
    padding-top: 0;
    margin-top: 40px;
    margin-left: -14px;
    position: relative;
    z-index: 4;
  }

  .why-us.is-visible .why-us__item[data-node="01"] { transition-delay: 0.3s; }
  .why-us.is-visible .why-us__item[data-node="02"] { transition-delay: 0.38s; }
  .why-us.is-visible .why-us__item[data-node="03"] { transition-delay: 0.46s; }
  .why-us.is-visible .why-us__item[data-node="04"] { transition-delay: 0.54s; }
  .why-us.is-visible .why-us__item[data-node="05"] { transition-delay: 0.62s; }
  .why-us.is-visible .why-us__item[data-node="06"] { transition-delay: 0.7s; }
}

@media (max-width: 768px) {
  .why-us { padding: 40px 12px 56px; }

  .why-us__body {
    grid-template-columns: minmax(52px, 1fr) minmax(200px, 280px) minmax(52px, 1fr);
    gap: 8px 0;
  }

  .why-us__diagram {
    max-width: 280px;
    margin-block: 14px;
    --side-n: 70;
    --orb-n: 27;
    --ring-n: 45;
    --side-size: 70%;
    --orb-r: 27%;
    --ring-r: 45%;
  }

  .why-us__orb h4 {
    font-size: 13px;
    letter-spacing: 1px;
  }

  .why-us__orb-en {
    font-size: 8px;
  }

  .why-us__orb-tag {
    margin-top: 4px;
    padding: 2px 8px;
    font-size: 9px;
  }

  .why-us__bar-label {
    font-size: 10px;
    letter-spacing: 2px;
  }

  .why-us__bar--top .why-us__bar-label::after,
  .why-us__bar--bottom .why-us__bar-label::before {
    width: 1.4em;
    height: 0.9em;
  }

  .why-us__content h3 {
    font-size: 12px;
    letter-spacing: 0;
  }

  .why-us__content p {
    font-size: 10.5px;
  }

  .why-us__node {
    width: 28px;
    height: 28px;
    font-size: 11px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .why-us__bar--top,
  .why-us__bar--bottom { animation: none; }
  .why-us__orb--orange,
  .why-us__orb--blue { animation: none; }
  .why-us__title, .why-us__subtitle, .why-us__item,
  .why-us__diagram, .why-us__node, .why-us__bar, .why-us__ring {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .why-us__orb { transform: translate(-50%, -50%) !important; }
}