/* ============================================================
   6.1.1 基准介绍（一级菜单「基准介绍」，单页只读）
   定位：体系介绍页 = 首页式落地页（2026-09-21 用户要求「类似首页介绍」→ 二次重设计）
   口径：docs/页面设计/6.1.1-基准介绍.md
   结构：hero（eyebrow + 页名 + 定位语 + 两个入口 + 四条关键数字 + 三层结构剖面图）
        + ① 体系框架（三层剖面 + 层间关系 + 横向标记侧栏）
        + ② 三层测试域（三张可点卡片：层名 / 域全称 / 定位 / 口径 / 规模）
        + ③ 标准能力维度（词表：序号 + 维度名 + 口径）
        + 页尾入口带
   视觉：全站浅蓝白科技风（底 #F4F7FE / 主色 #0F62FE / 蓝青渐变）；
        本页为首页式首屏，字号按首屏层级放宽，层级由字号、字重与墨色共同承担。
   ============================================================ */

/* ---------------- hero ---------------- */
.in-banner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 336px;
  column-gap: 30px;
  margin-top: 10px;
  padding: 56px 44px 0;
  border: 1px solid var(--line);
  border-radius: 16px;
  /* 2026-09-21 参考稿：底色更白、只留极淡网格与柔光（原蓝底渐变收浅） */
  background: linear-gradient(135deg, #FFFFFF 0%, #F6FAFF 46%, #F1FBFD 100%);
  box-shadow: 0 16px 38px rgba(12, 50, 140, 0.07);
  overflow: hidden;
  isolation: isolate;
}

/* 首屏顶部装饰：横线 + 节点 + 两支箭头指到虚线基线（对齐 / 度量的氛围，不参与阅读） */
.in-hero-rule {
  position: absolute;
  inset: 0 0 auto 0;
  z-index: 0;
  width: 100%;
  height: 60px;
  fill: none;
  stroke: #0F62FE;
  stroke-opacity: 0.15;
  stroke-width: 1.3;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.in-hero-rule circle { fill: #0F62FE; fill-opacity: 0.26; stroke: none; }
.in-hero-rule .is-dash { stroke-dasharray: 7 8; stroke-opacity: 0.11; }

/* 品牌标记：盾形方升标 + 名称（参考稿首行） */
.in-brand { display: flex; align-items: center; gap: 9px; margin-bottom: 16px; }
.in-brand-mark { width: 30px; height: 34px; flex: none; overflow: visible; }
.in-shield-body { fill: #fff; stroke: #0F62FE; stroke-width: 1.8; }
.in-shield-face { stroke: #0F62FE; stroke-width: 0.9; stroke-linejoin: round; }
.in-shield-face.is-top { fill: #EAF2FF; }
.in-shield-face.is-left { fill: #0A7BE0; fill-opacity: 0.82; }
.in-shield-face.is-right { fill: #0F62FE; }
.in-brand-txt { display: flex; align-items: baseline; gap: 8px; }
.in-brand-txt > b {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.in-brand-txt > i {
  padding-left: 8px;
  border-left: 1px solid var(--line);
  font-style: normal;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-4);
}
.in-banner::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, #0F62FE, #00A3C4 58%, rgba(15, 98, 254, 0));
}

/* 背景：蓝青柔光 + 细网格，向底部渐隐 */
.in-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    radial-gradient(620px 300px at 88% -26%, rgba(15, 98, 254, 0.22), transparent 66%),
    radial-gradient(520px 280px at 2% 118%, rgba(0, 163, 196, 0.18), transparent 68%),
    linear-gradient(to right, rgba(15, 98, 254, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15, 98, 254, 0.05) 1px, transparent 1px);
  background-size: auto, auto, 40px 40px, 40px 40px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, #000 58%, transparent 100%);
  mask-image: linear-gradient(180deg, #000 0%, #000 58%, transparent 100%);
}

/* 首屏文案 */
.in-banner-main { position: relative; z-index: 1; grid-column: 1; grid-row: 1; max-width: 660px; align-self: center; }
.in-banner-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 13px 4px 11px;
  border: 1px solid rgba(15, 98, 254, 0.22);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--blue-700);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
}
.in-banner-eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 0 3px rgba(15, 98, 254, 0.16);
}
.in-banner h1 {
  margin-top: 14px;
  font-family: var(--font-display);
  font-size: 46px;
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.035em;
  color: var(--ink);
}
/* 主标题双色（参考稿）：前半深墨、后半蓝渐变（文字裁切取渐变） */
.in-banner h1 .in-h1-b {
  margin-left: 2px;
  background: linear-gradient(100deg, #0F62FE, #0A7BE0 60%, #00A3C4);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.in-banner-lede {
  margin-top: 13px;
  max-width: 620px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-3);
}
.in-banner-acts { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }

/* 「统一三则」小字行（与参考稿的「度 / 量 / 衡」同一位置）：题库 / 维度 / 口径 */
.in-banner-unify {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}
.in-banner-unify li { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; }
.in-banner-unify li::before {
  content: '';
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--uc, var(--blue));
}
.in-banner-unify b { font-weight: 600; color: var(--ink-2); }
.in-banner-unify span { font-size: 11.5px; color: var(--ink-4); }
/* 按钮前置图标 */
.in-btn-ico { display: inline-flex; align-items: center; font-style: normal; }
.in-btn-ico svg { display: block; width: 14px; height: 14px; }

.in-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 20px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.88);
  font-family: inherit;
  font-size: 13.5px;
  color: var(--ink-2);
  cursor: pointer;
  transition: border-color 0.18s, color 0.18s, box-shadow 0.18s, transform 0.18s var(--ease);
}
.in-btn:hover {
  border-color: rgba(15, 98, 254, 0.45);
  color: var(--blue-700);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(15, 98, 254, 0.12);
}
.in-btn.is-primary {
  border-color: transparent;
  background: linear-gradient(120deg, #0F62FE, #0A7BE0);
  color: #fff;
  box-shadow: 0 8px 22px rgba(15, 98, 254, 0.28);
}
.in-btn.is-primary:hover { color: #fff; box-shadow: 0 12px 28px rgba(15, 98, 254, 0.34); }
.in-btn-arrow { font-style: normal; transition: transform 0.18s var(--ease); }
.in-btn:hover .in-btn-arrow { transform: translateX(3px); }

/* ---------------- hero 剖面图：三层结构（等距倾斜三板 + 纵向标记带 + 基准板） ---------------- */
.in-fig {
  position: relative;
  z-index: 1;
  grid-column: 2;
  grid-row: 1;
  align-self: center;
  margin: 6px 0 0 10px;
  height: 214px;
  pointer-events: none;
}
/* 三层板单独旋转倾斜（环 / 尺 / 投影 / 图下小字保持正立） */
.in-fig-plates {
  position: absolute;
  inset: 10px 22px 50px 30px;
  transform: rotate(-12deg) skewX(6deg);
  transform-origin: 50% 50%;
}
/* 度量衡母题：虚线双环 + 左缘竖刻度尺（含指示标）+ 底部投影 + 图下小字 */
.in-fig-rings {
  position: absolute;
  inset: 4px 10px 54px 26px;
  border: 1px dashed rgba(15, 98, 254, 0.28);
  border-radius: 50%;
}
.in-fig-rings::after {
  content: '';
  position: absolute;
  inset: 13%;
  border: 1px dashed rgba(15, 98, 254, 0.15);
  border-radius: 50%;
}
.in-fig-scale {
  position: absolute;
  left: 2px;
  top: 26px;
  bottom: 62px;
  width: 1px;
  background: rgba(15, 98, 254, 0.38);
}
.in-fig-scale::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 8px;
  background-image:
    repeating-linear-gradient(to bottom, rgba(15, 98, 254, 0.38) 0 1px, transparent 1px 12px),
    repeating-linear-gradient(to bottom, rgba(15, 98, 254, 0.2) 0 1px, transparent 1px 6px);
  background-size: 8px 100%, 4px 100%;
  background-repeat: no-repeat;
}
.in-fig-scale::after {
  content: '';
  position: absolute;
  left: -3px;
  top: 45%;
  width: 0;
  height: 0;
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  border-left: 6px solid #0F62FE;
}
.in-fig-shadow {
  position: absolute;
  left: 20%;
  right: 2%;
  bottom: 26px;
  height: 18px;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(15, 98, 254, 0.2), rgba(15, 98, 254, 0));
}
.in-fig-cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  text-align: center;
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--ink-4);
  white-space: nowrap;
}
.in-fig-rings,
.in-fig-scale,
.in-fig-shadow,
.in-fig-cap { animation: in-fig-fade 0.8s var(--ease) both; }
@keyframes in-fig-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}
.in-fig-plane {
  position: absolute;
  left: 62px;
  right: 0;
  height: 38px;
  border: 1px solid rgba(15, 98, 254, 0.2);
  border-radius: 9px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.95), rgba(15, 98, 254, 0.08));
  box-shadow: 0 12px 26px rgba(15, 98, 254, 0.12);
  animation: in-fig-in 0.72s var(--ease) both;
}
.in-fig-plane > i {
  position: absolute;
  top: 50%;
  left: 13px;
  width: 7px;
  height: 7px;
  margin-top: -3.5px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.85);
}
/* 板面内的「一行内容」示意 */
.in-fig-plane::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 28px;
  width: 52%;
  height: 3px;
  margin-top: -1.5px;
  border-radius: 2px;
  background: color-mix(in srgb, currentColor 22%, transparent);
}
.in-fig-code {
  position: absolute;
  top: 50%;
  right: 12px;
  transform: translateY(-50%);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: rgba(15, 98, 254, 0.5);
}
.in-fig-plane.is-l1 { top: 2px; left: 82px; color: #0F62FE; animation-delay: 0.06s; }
.in-fig-plane.is-l2 { top: 56px; left: 41px; color: #00A3C4; animation-delay: 0.14s; }
.in-fig-plane.is-l3 { top: 110px; left: 0; color: #5C4EE5; animation-delay: 0.22s; }
/* 纵向标记带：横向标记（安全合规 → 成熟度）跨三层的示意 */
.in-fig-mark {
  position: absolute;
  top: -16px;
  bottom: 16px;
  right: 92px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg,
    rgba(232, 69, 44, 0) 0%, rgba(232, 69, 44, 0.55) 26%,
    rgba(14, 159, 110, 0.5) 74%, rgba(14, 159, 110, 0) 100%);
  animation: in-fig-band 0.8s var(--ease) both;
}
/* 基准板（底板）：刻度感，示意三层有共同的度量基准 */
.in-fig-base {
  position: absolute;
  left: -28px;
  right: -12px;
  bottom: -6px;
  height: 12px;
  border-radius: 4px;
  background: linear-gradient(90deg, rgba(15, 98, 254, 0.05), rgba(15, 98, 254, 0.16));
}
.in-fig-base::before {
  content: '';
  position: absolute;
  inset: -5px 0 auto 0;
  height: 5px;
  background-image: repeating-linear-gradient(90deg,
    rgba(15, 98, 254, 0.28) 0 1px, transparent 1px 14px);
}

/* 关键数字横条：与首屏齐宽，上缘一条细线 */
.in-banner-stats {
  position: relative;
  z-index: 1;
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 36px -44px 0;
  padding: 0 44px;
  list-style: none;
  border-top: 1px solid rgba(15, 98, 254, 0.14);
  background: rgba(255, 255, 255, 0.6);
}
.in-banner-stats li { position: relative; padding: 20px 0 24px; }
.in-banner-stats li + li::before {
  content: '';
  position: absolute;
  top: 20px;
  bottom: 24px;
  left: 0;
  width: 1px;
  background: linear-gradient(180deg,
    rgba(15, 98, 254, 0), rgba(15, 98, 254, 0.18) 30%,
    rgba(15, 98, 254, 0.18) 70%, rgba(15, 98, 254, 0));
}
.in-banner-stats b {
  display: block;
  font-size: 36px;
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.035em;
  color: var(--blue-700);
}
.in-stat-k { display: block; margin-top: 7px; font-size: 12.5px; color: var(--ink-2); }
.in-stat-n { display: block; margin-top: 2px; font-size: 11px; color: var(--ink-4); }

/* ---------------- 分节 ---------------- */
.in-sec {
  margin-top: 18px;
  padding: 24px 26px 26px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 1px 2px rgba(11, 27, 51, 0.04), 0 12px 30px rgba(11, 27, 51, 0.035);
}
.in-sec-head { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.in-sec-idx {
  display: inline-grid;
  place-items: center;
  width: 26px;
  height: 26px;
  flex: none;
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(15, 98, 254, 0.14), rgba(0, 163, 196, 0.12));
  color: var(--blue-700);
  font-size: 11px;
  font-weight: 600;
}
.in-sec-head h2 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.in-sec-head .in-note { font-size: 12px; color: var(--ink-4); }

/* ---------------- ① 体系框架 ---------------- */
.in-frame-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 248px;
  gap: 18px;
  align-items: start;
}
/* 层色：L1 蓝 / L2 青 / L3 紫 */
.in-frame-row.is-l1 { --lc: #0F62FE; }
.in-frame-row.is-l2 { --lc: #00A3C4; }
.in-frame-row.is-l3 { --lc: #5C4EE5; }
.in-frame-rows { display: flex; flex-direction: column; min-width: 0; }
.in-frame-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 15px 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--lc);
  border-radius: 10px;
  background: linear-gradient(90deg, color-mix(in srgb, var(--lc) 7%, #fff) 0%, #fff 46%);
  transition: transform 0.18s var(--ease), box-shadow 0.18s;
}
.in-frame-row:hover { transform: translateX(2px); box-shadow: 0 10px 24px rgba(12, 50, 140, 0.08); }
.in-frame-lv {
  flex: none;
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 24px;
  border-radius: 6px;
  background: color-mix(in srgb, var(--lc) 12%, #fff);
  color: var(--lc);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.in-frame-body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.in-frame-name {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}
.in-frame-desc { font-size: 12.5px; line-height: 1.6; color: var(--ink-3); }
.in-frame-val {
  flex: none;
  font-size: 28px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--lc);
}
/* 层间关系：一条短竖线 + 关系说明 */
.in-frame-link { display: flex; align-items: center; gap: 10px; padding: 6px 0; }
.in-frame-link-line {
  width: 2px;
  height: 18px;
  margin-left: 15px;
  border-radius: 2px;
  background: linear-gradient(180deg,
    rgba(15, 98, 254, 0.08), rgba(15, 98, 254, 0.42), rgba(15, 98, 254, 0.08));
}
.in-frame-link-text { font-size: 11.5px; color: var(--ink-4); }

/* 横向标记侧栏：不占分层席位 */
.in-frame-side {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 16px 16px 15px 18px;
  border: 1px dashed var(--line);
  border-left: 2px solid rgba(15, 98, 254, 0.22);
  border-radius: 10px;
  background: linear-gradient(180deg, #FBFDFF, #F5F9FF);
}
.in-side-label {
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--ink-4);
}
.in-mark {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  font-size: 12px;
  color: var(--ink-2);
}
.in-mark-dot { flex: none; width: 6px; height: 6px; border-radius: 50%; background: var(--mc, var(--ink-4)); }
.in-side-note { margin-top: 2px; font-size: 11px; line-height: 1.65; color: var(--ink-4); }

/* ---------------- ② 三个测试域 ---------------- */
.in-domains { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.in-domain {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 18px 20px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(180deg, color-mix(in srgb, var(--dc) 6%, #fff) 0%, #fff 48%);
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.2s var(--ease), border-color 0.2s, box-shadow 0.2s;
}
.in-domain::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--dc), color-mix(in srgb, var(--dc) 22%, transparent));
}
.in-domain:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--dc) 40%, var(--line));
  box-shadow: 0 18px 38px rgba(12, 50, 140, 0.14);
}
.in-domain-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
/* 层名（能力层 / 任务层 / 场景层）：体系说明用，仅在本页与文档呈现 */
.in-domain-layer {
  padding: 3px 9px;
  border: 1px solid color-mix(in srgb, var(--dc) 24%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--dc) 10%, #fff);
  color: var(--dc);
  font-size: 11px;
  letter-spacing: 0.04em;
}
.in-domain-idx {
  font-size: 22px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--dc);
  opacity: 0.2;
}
.in-domain-head { display: flex; align-items: center; gap: 9px; }
.in-domain-dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--dc);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--dc) 14%, transparent);
}
.in-domain-name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.in-domain-pos {
  align-self: flex-start;
  padding: 3px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--dc) 10%, transparent);
  color: var(--dc);
  font-size: 11.5px;
}
.in-domain-intro { font-size: 12.5px; line-height: 1.72; color: var(--ink-3); }
.in-domain-scale { font-size: 12.5px; color: var(--ink-2); }
.in-domain-ft {
  display: flex;
  align-items: center;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--line-2);
}
.in-domain-ft i {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-style: normal;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--dc);
  transition: gap 0.18s var(--ease);
}
.in-domain:hover .in-domain-ft i { gap: 10px; }

/* ---------------- ③ 标准能力维度（词表） ---------------- */
.in-dims {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 28px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.in-dim {
  display: flex;
  align-items: baseline;
  gap: 13px;
  padding: 13px 2px;
  border-top: 1px solid var(--line-2);
}
.in-dim:first-child,
.in-dim:nth-child(2) { border-top-color: transparent; }
.in-dim-idx {
  flex: none;
  width: 22px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--blue);
  opacity: 0.72;
}
.in-dim-body { min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.in-dim-name {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}
.in-dim-note { font-size: 12px; line-height: 1.65; color: var(--ink-4); }
.in-dim-empty { font-size: 12.5px; color: var(--ink-4); }

/* ---------------- 页尾入口带 ---------------- */
.in-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 18px;
  padding: 20px 26px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(120deg, #EAF2FF 0%, #F4FAFF 52%, #E9F6FA 100%);
  box-shadow: 0 12px 30px rgba(12, 50, 140, 0.06);
}
.in-cta-text b {
  display: block;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}
.in-cta-text span { display: block; margin-top: 5px; font-size: 12.5px; color: var(--ink-3); }
.in-cta-acts { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------------- 入场动效 ---------------- */
@keyframes in-rise {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}
@keyframes in-fig-in {
  from { opacity: 0; transform: translateX(26px); }
  to { opacity: 1; transform: none; }
}
@keyframes in-fig-band {
  from { opacity: 0; transform: scaleY(0.4); }
  to { opacity: 1; transform: none; }
}

.in-brand,
.in-banner-eyebrow,
.in-banner h1,
.in-banner-lede,
.in-banner-acts,
.in-banner-unify { animation: in-rise 0.6s var(--ease) both; }
.in-brand { animation-delay: 0.02s; }
.in-banner h1 { animation-delay: 0.06s; }
.in-banner-lede { animation-delay: 0.12s; }
.in-banner-acts { animation-delay: 0.18s; }
.in-banner-unify { animation-delay: 0.24s; }

.in-banner-stats li { animation: in-rise 0.6s var(--ease) both; }
.in-banner-stats li:nth-child(1) { animation-delay: 0.22s; }
.in-banner-stats li:nth-child(2) { animation-delay: 0.27s; }
.in-banner-stats li:nth-child(3) { animation-delay: 0.32s; }
.in-banner-stats li:nth-child(4) { animation-delay: 0.37s; }

/* 分节默认可见；进入视野时由 JS 追加 .is-in 触发一次渐显 */
.in-sec.is-in,
.in-cta.is-in { animation: in-rise 0.56s var(--ease) both; }

@media (prefers-reduced-motion: reduce) {
  .in-banner *,
  .in-banner,
  .in-sec,
  .in-cta,
  .in-frame-row,
  .in-domain,
  .in-dim,
  .in-btn { animation: none !important; transition: none !important; }
}

/* ---------------- 窄屏 ---------------- */
@media (max-width: 1180px) {
  .in-banner {
    grid-template-columns: minmax(0, 1fr);
    padding: 32px 30px 0;
  }
  .in-fig { display: none; }
  .in-banner-main { max-width: none; }
  .in-banner-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin: 28px -30px 0;
    padding: 0 30px;
  }
  .in-banner-stats li + li::before { display: none; }
  .in-banner-stats li { padding: 16px 0 18px; }
  .in-banner-stats b { font-size: 31px; }
  .in-frame-wrap { grid-template-columns: minmax(0, 1fr); }
  .in-domains { grid-template-columns: minmax(0, 1fr); }
  .in-cta { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 900px) {
  .in-banner { padding: 26px 22px 0; }
  .in-hero-rule { display: none; }
  .in-brand-txt > i { display: none; }
  .in-banner h1 { font-size: 31px; }
  .in-banner-unify { gap: 6px 16px; }
  .in-banner-lede { font-size: 14px; }
  .in-banner-stats { padding: 0 22px; margin-left: -22px; margin-right: -22px; }
  .in-banner-stats b { font-size: 26px; }
  .in-sec { padding: 20px 18px 22px; }
  .in-dims { grid-template-columns: minmax(0, 1fr); }
  .in-dim:first-child { border-top-color: var(--line-2); }
  .in-dim:nth-child(2) { border-top-color: var(--line-2); }
}