/* ============================================================
 * 莫比乌斯 · 会生长的生产力系统 · 宣传页样式
 * 参考 Apple 官网：大字号、留白、暗亮章节交替、渐变点缀
 * ============================================================ */

:root {
  --bg-dark:   #000;
  --bg-dark-2: #030014;
  --bg-dark-3: #07071a;
  --bg-light:  #fbfbfd;
  --bg-light-2:#f5f5f7;
  --text-dark: #1d1d1f;
  --text-light:#f5f5f7;
  --muted-dark:#6e6e73;
  --muted-light:#a1a1a6;
  --brand-1: #22d3ee;
  --brand-2: #a78bfa;
  --brand-3: #f472b6;
  --grad-brand: linear-gradient(120deg, var(--brand-1) 0%, var(--brand-2) 50%, var(--brand-3) 100%);
  --max-w: 1080px;
  --max-w-narrow: 760px;
  --radius: 22px;
  --shadow-card: 0 30px 80px rgba(0,0,0,.25);
  --ease: cubic-bezier(.22, .61, .36, 1);
  --font-cn: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
             "PingFang SC", "Helvetica Neue", "Microsoft YaHei", "Source Han Sans CN",
             "Noto Sans CJK SC", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-cn);
  background: var(--bg-light);
  color: var(--text-dark);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: .01em;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

/* ---------- 顶部导航 ---------- */
.topnav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 2rem;
  height: 56px;
  padding: 0 1.5rem;
  background: rgba(0,0,0,.55);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  color: var(--text-light);
  transition: background .35s var(--ease), color .35s var(--ease);
}
.topnav.on-light {
  background: rgba(251,251,253,.78);
  color: var(--text-dark);
  border-bottom: 1px solid rgba(0,0,0,.06);
}
.topnav-brand {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: .08em;
}
.topnav-logo { width: 22px; height: 22px; }
.topnav-links {
  list-style: none;
  margin: 0 auto 0 0;
  padding: 0;
  display: flex;
  gap: 1.5rem;
  font-size: .85rem;
  opacity: .9;
}
.topnav-links a {
  padding: .35rem .15rem;
  border-bottom: 1px solid transparent;
  transition: border-color .25s var(--ease);
}
.topnav-links a:hover { border-bottom-color: currentColor; }
.topnav-id {
  font-size: .8rem;
  opacity: .8;
  font-variant-numeric: tabular-nums;
}
@media (max-width: 720px) {
  .topnav { gap: 1rem; padding: 0 1rem; }
  .topnav-links { display: none; }
}

/* ---------- 通用 section ---------- */
.section {
  position: relative;
  width: 100%;
  scroll-margin-top: 88px;
}
.section-padded { padding: 9rem 1.5rem; }
.section-dark  { background: var(--bg-dark); color: var(--text-light); }
.section-dark-2{ background: var(--bg-dark-2); color: var(--text-light); }
.section-light { background: var(--bg-light); color: var(--text-dark); }
.section-light-2{ background: var(--bg-light-2); color: var(--text-dark); }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
}
.container.narrow { max-width: var(--max-w-narrow); }
.center { text-align: center; }

/* ---------- 文字层级 ---------- */
.kicker {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--brand-2);
  margin: 0 0 1.2rem;
}
.kicker.light { color: var(--brand-1); font-size: 1.15rem; }

.display {
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -.01em;
  margin: 0 0 1.5rem;
}
.display.small { font-size: clamp(2rem, 4.5vw, 3.4rem); }
.display.light { color: var(--text-light); }
.display.xl { font-size: clamp(2.8rem, 7vw, 5.6rem); }

.lead {
  font-size: clamp(1.15rem, 1.8vw, 1.45rem);
  line-height: 1.55;
  font-weight: 400;
  margin: 0 0 1.4rem;
  letter-spacing: .012em;
}
.lead.light { color: rgba(245,245,247,.92); }

.body {
  font-size: 1.02rem;
  line-height: 1.7;
  margin: 0 0 1.2rem;
  color: var(--muted-dark);
}
.section-dark .body,
.section-dark-2 .body { color: rgba(245,245,247,.78); }

.muted { opacity: .55; }
.small { font-size: .9rem; }

.gradient-text {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.gradient-text-dark {
  background: linear-gradient(120deg, #0ea5b7 0%, #6d5bd0 50%, #db2777 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .85rem 1.6rem;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: .02em;
  transition: transform .25s var(--ease), background .25s var(--ease),
              color .25s var(--ease), box-shadow .25s var(--ease);
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--grad-brand);
  color: #0a0a18;
  font-weight: 600;
  box-shadow: 0 12px 32px rgba(167,139,250,.32);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 40px rgba(167,139,250,.4); }
.btn-ghost {
  background: transparent;
  color: inherit;
  border-color: rgba(255,255,255,.35);
}
.btn-ghost:hover { background: rgba(255,255,255,.08); transform: translateY(-2px); }

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 7rem 1.5rem 4rem;
  background: radial-gradient(ellipse at 50% 30%, #11062b 0%, #030014 60%, #000 100%);
  overflow: hidden;
}
#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: .9;
}
.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 1000px;
}
.hero-eyebrow {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--brand-2);
  margin: 0 0 1.5rem;
}
.hero-title {
  font-size: clamp(3.2rem, 10vw, 7.4rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.02em;
  margin: 0 0 1.8rem;
  color: var(--text-light);
}
.hero-title .line { display: block; }
.hero-sub {
  font-size: clamp(1.1rem, 2vw, 1.6rem);
  line-height: 1.55;
  font-weight: 300;
  color: rgba(245,245,247,.88);
  margin: 0 auto 2.6rem;
  max-width: 640px;
}
.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-cta .btn {
  min-width: 220px;
  min-height: 52px;
}
.prologue-thesis {
  font-size: clamp(1.3rem, 2.4vw, 1.85rem);
  font-weight: 700;
  line-height: 1.5;
  color: var(--text-dark);
  margin: 2.4rem 0 2.8rem;
  letter-spacing: -.005em;
}
.feature-media-stack {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
  align-items: stretch;
}
.feature-media-stack .media-placeholder {
  aspect-ratio: auto;
  min-height: 320px;
  padding: 1.2rem;
}
.feature-media-stack .research-fleet {
  margin: 0;
  max-width: none;
}

/* ---------- 概念对比 ---------- */
.concept-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.6rem;
  margin: 4rem 0 0;
}
@media (max-width: 760px) {
  .concept-grid { grid-template-columns: 1fr; }
}
.concept-card {
  border-radius: var(--radius);
  padding: 3rem 2rem;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  text-align: center;
  transition: transform .4s var(--ease), border-color .4s var(--ease);
}
.concept-card.highlight {
  background: linear-gradient(180deg, rgba(167,139,250,.12), rgba(34,211,238,.05));
  border-color: rgba(167,139,250,.4);
  box-shadow: 0 30px 80px rgba(167,139,250,.18);
}
.concept-card:hover { transform: translateY(-4px); }
.concept-3d {
  width: 100%;
  aspect-ratio: 16 / 10;
  margin-bottom: 1.5rem;
  border-radius: 14px;
  background: radial-gradient(circle at 50% 40%, rgba(167,139,250,.15), transparent 70%);
  position: relative;
  overflow: hidden;
}
.concept-3d canvas { display: block; width: 100% !important; height: 100% !important; }
.concept-card h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0 0 1rem;
  color: var(--text-light);
}
.concept-card p {
  color: rgba(245,245,247,.7);
  margin: 0 0 1rem;
  line-height: 1.65;
}

/* 流程图：感知 → 规划 → 执行 → 反思 ⋯ 归零 */
.loop-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: .35rem;
  margin-top: 1.4rem;
  font-size: .95rem;
  color: rgba(245,245,247,.75);
}
.loop-flow .node {
  padding: .35rem .75rem;
  border-radius: 999px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  white-space: nowrap;
}
.loop-flow .node.end {
  color: rgba(245,245,247,.4);
  text-decoration: line-through;
  text-decoration-color: rgba(244,114,182,.5);
}
.loop-flow .ellipsis {
  font-size: 1.2rem;
  letter-spacing: -.1em;
  color: rgba(167,139,250,.7);
  padding: 0 .15rem;
  animation: ellipsisBlink 2s ease-in-out infinite;
}
@keyframes ellipsisBlink {
  0%, 100% { opacity: .4; }
  50% { opacity: 1; }
}
.loop-flow .arrow {
  color: rgba(245,245,247,.3);
  font-style: normal;
  font-size: .9rem;
}
.loop-flow.mobius .node {
  background: rgba(167,139,250,.1);
  border-color: rgba(167,139,250,.25);
  color: rgba(245,245,247,.9);
}
.loop-flow.mobius .arrow {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 700;
}
.loop-flow.mobius .arrow.circ {
  font-size: 1.2rem;
  animation: circSpin 3s linear infinite;
  display: inline-block;
}
@keyframes circSpin {
  to { transform: rotate(360deg); }
}
.loop-flow.mobius .node.ascend {
  background: var(--grad-brand);
  color: #0a0a18;
  font-weight: 600;
  border-color: transparent;
  box-shadow: 0 8px 20px rgba(167,139,250,.4);
}

/* ---------- 三重特性 ---------- */
.trinity-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.6rem;
  margin-top: 4rem;
}
@media (max-width: 880px) {
  .trinity-grid { grid-template-columns: 1fr; }
}
.trinity-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 3rem 2rem 2.5rem;
  text-align: center;
  border: 1px solid rgba(0,0,0,.06);
  box-shadow: 0 20px 50px rgba(0,0,0,.05);
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
  position: relative;
  overflow: hidden;
}
.trinity-card:hover { transform: translateY(-6px); box-shadow: 0 30px 80px rgba(0,0,0,.1); }
/* 合并进深色段后，trinity 卡片改用半透明深色底 */
.section-dark .trinity-card {
  background: rgba(255,255,255,.04);
  border-color: rgba(255,255,255,.08);
  box-shadow: 0 20px 50px rgba(0,0,0,.35);
}
.section-dark .trinity-card:hover {
  border-color: rgba(167,139,250,.35);
  box-shadow: 0 30px 80px rgba(167,139,250,.18);
}
.section-dark .trinity-card h3 { color: var(--text-light); }
.section-dark .trinity-card p { color: rgba(245,245,247,.72); }
.trinity-num {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .25em;
  color: var(--brand-2);
  margin-bottom: 1.5rem;
}
.trinity-3d {
  width: 100%;
  aspect-ratio: 4 / 3;
  margin-bottom: 1.5rem;
  border-radius: 14px;
  background:
    radial-gradient(circle at 50% 35%, rgba(167,139,250,.15), transparent 65%);
  position: relative;
  overflow: hidden;
}
.trinity-3d canvas { display: block; width: 100% !important; height: 100% !important; }
.trinity-card h3 {
  font-size: 1.35rem;
  font-weight: 600;
  margin: 0 0 .8rem;
  letter-spacing: .005em;
}
.trinity-card p { color: var(--muted-dark); line-height: 1.65; margin: 0; }

/* 合并段内的视觉过渡线（普通圆环对比 → 三重特性之间） */
.section-bridge {
  width: 100%;
  max-width: 320px;
  height: 1px;
  margin: 5rem auto 0;
  background: linear-gradient(90deg, transparent, rgba(167,139,250,.55), transparent);
  opacity: .8;
}

/* 分页标志：两段同色 section 之间的浅色分隔（特性总览 → 能力 ①） */
.page-divider {
  background: var(--bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.1rem;
  padding: 2.4rem 1rem;
}
.page-divider .divider-rule {
  width: clamp(80px, 22vw, 240px);
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(29, 29, 31, .15));
}
.page-divider .divider-rule:last-child {
  background: linear-gradient(90deg, rgba(29, 29, 31, .15), transparent);
}
.page-divider .divider-dots {
  display: inline-flex;
  gap: .4rem;
}
.page-divider .divider-dots i {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(29, 29, 31, .22);
}

/* ---------- 七大特性总览：章节卡片网格 ---------- */
.feature-toc {
  list-style: none;
  margin: 4rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
@media (max-width: 720px) { .feature-toc { grid-template-columns: 1fr; } }
.feature-toc li {
  display: block;
  transition: opacity .9s var(--ease), transform .9s var(--ease);
}
.feature-toc li:nth-child(1) { transition-delay: 0ms; }
.feature-toc li:nth-child(2) { transition-delay: 70ms; }
.feature-toc li:nth-child(3) { transition-delay: 140ms; }
.feature-toc li:nth-child(4) { transition-delay: 210ms; }
.feature-toc li:nth-child(5) { transition-delay: 280ms; }
.feature-toc li:nth-child(6) { transition-delay: 350ms; }
.feature-toc li:nth-child(7) { transition-delay: 420ms; }
.feature-toc a {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1.3rem;
  padding: 1.7rem 1.6rem;
  border-radius: 18px;
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.08);
  color: rgba(245,245,247,.88);
  overflow: hidden;
  transition: transform .35s var(--ease), border-color .35s var(--ease),
              box-shadow .35s var(--ease), background .35s var(--ease);
}
.feature-toc a::after {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--grad-brand);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .35s var(--ease);
}
.feature-toc a:hover,
.feature-toc a:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(167,139,250,.45);
  background: rgba(167,139,250,.06);
  box-shadow: 0 22px 50px rgba(167,139,250,.18);
}
.feature-toc a:hover::after,
.feature-toc a:focus-visible::after { transform: scaleX(1); }
.toc-ghost {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.04em;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(180deg, rgba(167,139,250,.4), rgba(34,211,238,.12));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: background .35s var(--ease);
}
.feature-toc a:hover .toc-ghost,
.feature-toc a:focus-visible .toc-ghost {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.toc-body {
  display: flex;
  flex-direction: column;
  gap: .25rem;
  min-width: 0;
}
.toc-title {
  font-size: 1.12rem;
  font-weight: 600;
  letter-spacing: .01em;
  line-height: 1.3;
}
.toc-meta {
  font-size: .8rem;
  color: rgba(245,245,247,.5);
  letter-spacing: .04em;
  font-weight: 400;
}
.toc-arrow {
  font-style: normal;
  font-size: 1.2rem;
  color: rgba(167,139,250,.5);
  transition: transform .35s var(--ease), color .35s var(--ease);
}
.feature-toc a:hover .toc-arrow,
.feature-toc a:focus-visible .toc-arrow {
  color: var(--brand-2);
  transform: translateX(6px);
}

/* 浅色章节里的 feature-toc：白底卡片 + 深色文字 */
.section-light .feature-toc a {
  background: #ffffff;
  border-color: rgba(0,0,0,.06);
  color: var(--text-dark);
  box-shadow: 0 6px 20px rgba(0,0,0,.04);
}
.section-light .feature-toc a:hover,
.section-light .feature-toc a:focus-visible {
  border-color: rgba(167,139,250,.45);
  background: #ffffff;
  box-shadow: 0 22px 50px rgba(167,139,250,.16);
}
.section-light .toc-meta { color: rgba(29,29,31,.55); }

/* ---------- 单个特性布局 ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.feature-grid.reverse .feature-text { order: 2; }
.feature-grid.reverse .feature-media { order: 1; }
@media (max-width: 880px) {
  .feature-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .feature-grid.reverse .feature-text,
  .feature-grid.reverse .feature-media { order: initial; }
}
.feature-head {
  text-align: center;
  margin-bottom: 4rem;
}

/* ---------- 媒体占位 ---------- */
.feature-media {
  margin: 0;
}
.media-placeholder {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(167,139,250,.16), rgba(34,211,238,.06) 60%, rgba(244,114,182,.12)),
    radial-gradient(circle at 30% 30%, rgba(167,139,250,.25), transparent 50%);
  border: 1px solid rgba(167,139,250,.25);
  box-shadow: 0 30px 80px rgba(0,0,0,.2);
}
.section-light .media-placeholder {
  background:
    linear-gradient(135deg, rgba(167,139,250,.1), rgba(34,211,238,.04) 60%, rgba(244,114,182,.1)),
    radial-gradient(circle at 30% 30%, rgba(167,139,250,.15), transparent 50%);
  border-color: rgba(167,139,250,.2);
}

.product-shot {
  margin: 3.2rem auto 0;
  max-width: 1120px;
}
.product-shot img,
.product-shot video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 8.6;
  object-fit: cover;
  object-position: center top;
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, .12);
  box-shadow: 0 32px 90px rgba(0, 0, 0, .28);
}
.product-shot figcaption {
  max-width: 760px;
  margin: 1rem auto 0;
  text-align: center;
  font-size: .92rem;
  line-height: 1.8;
}
.product-shot--dark img,
.product-shot--dark video {
  border-color: rgba(167, 139, 250, .28);
  box-shadow: 0 34px 100px rgba(0, 0, 0, .42), 0 0 60px rgba(88, 80, 236, .12);
}
.product-shot--dark figcaption {
  color: rgba(245, 245, 247, .66);
}
.product-shot--light img,
.product-shot--light video {
  border-color: rgba(29, 29, 31, .08);
  box-shadow: 0 30px 80px rgba(29, 29, 31, .16);
}
.product-shot--light figcaption {
  color: rgba(29, 29, 31, .62);
}
@media (max-width: 760px) {
  .product-shot { margin-top: 2.2rem; }
  .product-shot img,
  .product-shot video {
    aspect-ratio: 4 / 3;
    border-radius: 18px;
  }
  .product-shot figcaption {
    font-size: .84rem;
    padding: 0 .4rem;
  }
}
.media-hint {
  position: absolute;
  bottom: 12px; left: 50%;
  transform: translateX(-50%);
  font-size: .72rem;
  letter-spacing: .15em;
  color: rgba(255,255,255,.55);
  text-transform: uppercase;
  font-weight: 500;
}
.section-light .media-hint { color: rgba(29,29,31,.45); }

/* ===== 通用：流动虚线 / 状态点 / 节点脉冲 ===== */
.flow-anim {
  stroke-dashoffset: 0;
  animation: flowDash 1.4s linear infinite;
}
.flow-anim.d1 { animation-delay: -.2s; }
.flow-anim.d2 { animation-delay: -.4s; }
.flow-anim.d3 { animation-delay: -.6s; }
.flow-anim.d4 { animation-delay: -.8s; }
.flow-anim.d5 { animation-delay: -1.0s; }
.flow-anim.d6 { animation-delay: -.3s; }
.flow-anim.d7 { animation-delay: -.5s; }
@keyframes flowDash {
  to { stroke-dashoffset: -18; }
}
.status-dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #2dd4bf;
  box-shadow: 0 0 8px rgba(45,212,191,.7);
  animation: statusBlink 1.6s ease-in-out infinite;
}
@keyframes statusBlink {
  0%, 100% { opacity: .55; }
  50% { opacity: 1; }
}
.node-pulse {
  animation: nodeBlink 2s ease-in-out infinite;
}
.node-pulse.d1 { animation-delay: -.3s; }
.node-pulse.d2 { animation-delay: -.6s; }
.node-pulse.d3 { animation-delay: -.9s; }
.node-pulse.d4 { animation-delay: -1.2s; }
.node-pulse.d5 { animation-delay: -1.5s; }
@keyframes nodeBlink {
  0%, 100% { opacity: .55; transform: scale(1); transform-box: fill-box; transform-origin: center; }
  50% { opacity: 1; transform: scale(1.35); transform-box: fill-box; transform-origin: center; }
}
.core-pulse {
  transform-box: fill-box;
  transform-origin: center;
  animation: corePulse 2.4s ease-in-out infinite;
}
@keyframes corePulse {
  0%, 100% { opacity: .35; transform: scale(1); }
  50% { opacity: .9; transform: scale(1.08); }
}

/* ===== feat-1: 7×24 项目运行热力图 ===== */
.media-heatmap { padding: 1.6rem; }
.heatmap-card {
  width: 100%;
  background: linear-gradient(180deg, rgba(255,255,255,.6), rgba(255,255,255,.3));
  border: 1px solid rgba(15,23,42,.08);
  border-radius: 16px;
  padding: 1.4rem;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.7);
}
.section-dark .heatmap-card {
  background: #ffffff;
  border-color: rgba(255,255,255,.5);
  box-shadow: 0 10px 30px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.7);
}
.heatmap-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1.1rem;
}
.heatmap-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-dark);
}
.heatmap-sub {
  font-size: .8rem;
  color: var(--muted-dark);
  margin-top: .2rem;
}
.heatmap-badge {
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .1em;
  color: #047857;
  background: rgba(45,212,191,.15);
  border: 1px solid rgba(45,212,191,.35);
  padding: .3rem .65rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: .35rem;
}
.heatmap-badge .badge-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #2dd4bf;
  box-shadow: 0 0 6px rgba(45,212,191,.8);
  animation: statusBlink 1.4s ease-in-out infinite;
}
.heatmap-card {
  position: relative;
}
.heatmap-axis-y {
  position: absolute;
  left: 8px;
  top: 76px;
  display: grid;
  grid-template-rows: repeat(7, 1fr);
  height: 134px;
  font-size: .65rem;
  color: var(--muted-dark);
  opacity: .6;
}
.heatmap-axis-y span {
  display: flex;
  align-items: center;
  height: 19px;
}
.heatmap-grid {
  display: grid;
  grid-template-columns: repeat(24, 1fr);
  grid-template-rows: repeat(7, 1fr);
  gap: 3px;
  margin: 0 0 .55rem 1.05rem;
  height: 134px;
}
.heatmap-cell {
  border-radius: 3px;
  background: rgba(15,23,42,.05);
  transition: opacity .3s var(--ease), transform .3s var(--ease);
}
.heatmap-cell.p1 { background: linear-gradient(135deg, #5eead4, #2dd4bf); }
.heatmap-cell.p2 { background: linear-gradient(135deg, #a5b4fc, #818cf8); }
.heatmap-cell.p3 { background: linear-gradient(135deg, #fda4af, #fb7185); }
.heatmap-cell.p4 { background: linear-gradient(135deg, #fde68a, #facc15); }
.heatmap-cell.breathe { animation: heatBreath 3s ease-in-out infinite; }
@keyframes heatBreath {
  0%, 100% { opacity: .82; }
  50% { opacity: 1; transform: scale(1.08); transform-box: fill-box; transform-origin: center; }
}
.heatmap-axis-x {
  display: flex;
  justify-content: space-between;
  margin: 0 0 1rem 1.05rem;
  font-size: .65rem;
  color: var(--muted-dark);
  opacity: .6;
  font-variant-numeric: tabular-nums;
}
.heatmap-legend {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  padding-top: .8rem;
  border-top: 1px dashed rgba(15,23,42,.1);
  font-size: .76rem;
  color: var(--text-dark);
}
.legend-item {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
}
.legend-dot {
  width: 10px; height: 10px;
  border-radius: 3px;
}
.legend-dot.p1 { background: linear-gradient(135deg, #5eead4, #2dd4bf); }
.legend-dot.p2 { background: linear-gradient(135deg, #a5b4fc, #818cf8); }
.legend-dot.p3 { background: linear-gradient(135deg, #fda4af, #fb7185); }
.legend-dot.p4 { background: linear-gradient(135deg, #fde68a, #facc15); }

/* ===== feat-2 自进化：三层同心闭环（核心球 + L1/L2/L3 三环） ===== */
/* ===== feat-4 智能体编队：四工作站围绕共享黑板 hub-and-spoke ===== */
.media-evolve,
.media-fleet {
  padding: 1.4rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  overflow: visible;
}

/* ---------- feat-2 同心闭环 ---------- */
.evolve-orbit {
  position: relative;
  width: 100%;
  max-width: 340px;
  aspect-ratio: 1 / 1;
}
.orbit-ring {
  position: absolute;
  border-radius: 50%;
  border-style: solid;
  border-width: 1.4px;
  pointer-events: none;
}
.orbit-l3 {
  inset: 0;
  border-color: rgba(251, 113, 133, .42);
  box-shadow: inset 0 0 50px rgba(251, 113, 133, .08), 0 0 36px rgba(251, 113, 133, .08);
}
.orbit-l2 {
  inset: 14%;
  border-color: rgba(167, 139, 250, .48);
  box-shadow: inset 0 0 38px rgba(167, 139, 250, .12), 0 0 28px rgba(167, 139, 250, .1);
}
.orbit-l1 {
  inset: 28%;
  border-color: rgba(94, 234, 212, .55);
  box-shadow: inset 0 0 30px rgba(94, 234, 212, .14), 0 0 22px rgba(94, 234, 212, .12);
}
/* 沿环跑的光点（包一层旋转壳，避免连节点一起转） */
.orbit-tracer-wrap {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.orbit-l3 .orbit-tracer-wrap { animation: orbit-spin-cw  18s linear infinite; }
.orbit-l2 .orbit-tracer-wrap { animation: orbit-spin-ccw 13s linear infinite; }
.orbit-l1 .orbit-tracer-wrap { animation: orbit-spin-cw  9s  linear infinite; }
.orbit-tracer {
  position: absolute;
  top: -3.5px;
  left: 50%;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 10px currentColor, 0 0 18px currentColor;
  transform: translateX(-50%);
}
.orbit-l3 .orbit-tracer { color: #fb7185; }
.orbit-l2 .orbit-tracer { color: #c4b5fd; }
.orbit-l1 .orbit-tracer { color: #5eead4; }
@keyframes orbit-spin-cw  { to { transform: rotate(360deg); } }
@keyframes orbit-spin-ccw { to { transform: rotate(-360deg); } }

/* 三层闭环节点：按各自环边分散 120° 角，避免重叠且不挡核心；轮流高亮 L1 → L2 → L3 */
.orbit-node {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .14rem;
  padding: .5rem .76rem .55rem;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(26, 10, 48, .92), rgba(10, 10, 24, .92));
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, .35);
  text-align: center;
  min-width: 110px;
  z-index: 3;
  /* 颜色变量：每层各自覆盖；默认 = L1 配色 */
  --c-tint-1: rgba(45, 212, 191, .35);
  --c-tint-2: rgba(129, 140, 248, .25);
  --c-glow:   rgba(94, 234, 212, .6);
  --c-edge:   rgba(94, 234, 212, .9);
  --c-tag:    #5eead4;
  --c-pulse:  #5eead4;
}
.orbit-node.on-l3 {
  /* 外环 330°（左上） */
  top: 7%;
  left: 25%;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(251, 113, 133, .45);
  animation: node-cycle-l3 6s ease-in-out infinite;
  --c-tint-1: rgba(251, 113, 133, .35);
  --c-tint-2: rgba(244, 114, 182, .25);
  --c-glow:   rgba(251, 113, 133, .6);
  --c-edge:   rgba(251, 113, 133, .9);
  --c-tag:    #fda4af;
  --c-pulse:  #fb7185;
}
.orbit-node.on-l2 {
  /* 中环 210°（左下） */
  top: 81%;
  left: 32%;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(167, 139, 250, .5);
  animation: node-cycle-l2 6s ease-in-out infinite;
  --c-tint-1: rgba(167, 139, 250, .38);
  --c-tint-2: rgba(129, 140, 248, .25);
  --c-glow:   rgba(167, 139, 250, .6);
  --c-edge:   rgba(167, 139, 250, .9);
  --c-tag:    #c4b5fd;
  --c-pulse:  #a78bfa;
}
.orbit-node.on-l1 {
  /* 内环 90°（右） */
  top: 50%;
  left: 72%;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(94, 234, 212, .55);
  animation: node-cycle-l1 6s ease-in-out infinite;
}

/* 三个独立 keyframe：每层高亮在周期的不同 1/3 段，避免 delay 错位导致顺序乱 */
@keyframes node-cycle-l1 {
  0%, 3% {
    background: linear-gradient(135deg, var(--c-tint-1), var(--c-tint-2));
    box-shadow: 0 12px 32px var(--c-glow), 0 0 0 1.5px var(--c-edge) inset;
    transform: translate(-50%, -50%) scale(1.08);
  }
  30%, 100% {
    background: linear-gradient(135deg, rgba(26, 10, 48, .92), rgba(10, 10, 24, .92));
    box-shadow: 0 6px 18px rgba(0, 0, 0, .35);
    transform: translate(-50%, -50%) scale(1);
  }
}
@keyframes node-cycle-l2 {
  0%, 33% {
    background: linear-gradient(135deg, rgba(26, 10, 48, .92), rgba(10, 10, 24, .92));
    box-shadow: 0 6px 18px rgba(0, 0, 0, .35);
    transform: translate(-50%, -50%) scale(1);
  }
  36%, 63% {
    background: linear-gradient(135deg, var(--c-tint-1), var(--c-tint-2));
    box-shadow: 0 12px 32px var(--c-glow), 0 0 0 1.5px var(--c-edge) inset;
    transform: translate(-50%, -50%) scale(1.08);
  }
  66%, 100% {
    background: linear-gradient(135deg, rgba(26, 10, 48, .92), rgba(10, 10, 24, .92));
    box-shadow: 0 6px 18px rgba(0, 0, 0, .35);
    transform: translate(-50%, -50%) scale(1);
  }
}
@keyframes node-cycle-l3 {
  0%, 66% {
    background: linear-gradient(135deg, rgba(26, 10, 48, .92), rgba(10, 10, 24, .92));
    box-shadow: 0 6px 18px rgba(0, 0, 0, .35);
    transform: translate(-50%, -50%) scale(1);
  }
  69%, 96% {
    background: linear-gradient(135deg, var(--c-tint-1), var(--c-tint-2));
    box-shadow: 0 12px 32px var(--c-glow), 0 0 0 1.5px var(--c-edge) inset;
    transform: translate(-50%, -50%) scale(1.08);
  }
  100% {
    background: linear-gradient(135deg, rgba(26, 10, 48, .92), rgba(10, 10, 24, .92));
    box-shadow: 0 6px 18px rgba(0, 0, 0, .35);
    transform: translate(-50%, -50%) scale(1);
  }
}

/* 同步：环边在对应层高亮时也变亮 */
.orbit-ring.orbit-l1 { animation: ring-glow-l1 6s ease-in-out infinite; }
.orbit-ring.orbit-l2 { animation: ring-glow-l2 6s ease-in-out infinite; }
.orbit-ring.orbit-l3 { animation: ring-glow-l3 6s ease-in-out infinite; }
@keyframes ring-glow-l1 {
  0%, 3% {
    border-color: rgba(94, 234, 212, .95);
    box-shadow: inset 0 0 50px rgba(94, 234, 212, .35), 0 0 36px rgba(94, 234, 212, .35);
  }
  30%, 100% {
    border-color: rgba(94, 234, 212, .55);
    box-shadow: inset 0 0 30px rgba(94, 234, 212, .14), 0 0 22px rgba(94, 234, 212, .12);
  }
}
@keyframes ring-glow-l2 {
  0%, 33% {
    border-color: rgba(167, 139, 250, .48);
    box-shadow: inset 0 0 38px rgba(167, 139, 250, .12), 0 0 28px rgba(167, 139, 250, .1);
  }
  36%, 63% {
    border-color: rgba(167, 139, 250, .95);
    box-shadow: inset 0 0 50px rgba(167, 139, 250, .35), 0 0 36px rgba(167, 139, 250, .35);
  }
  66%, 100% {
    border-color: rgba(167, 139, 250, .48);
    box-shadow: inset 0 0 38px rgba(167, 139, 250, .12), 0 0 28px rgba(167, 139, 250, .1);
  }
}
@keyframes ring-glow-l3 {
  0%, 66% {
    border-color: rgba(251, 113, 133, .42);
    box-shadow: inset 0 0 50px rgba(251, 113, 133, .08), 0 0 36px rgba(251, 113, 133, .08);
  }
  69%, 96% {
    border-color: rgba(251, 113, 133, .95);
    box-shadow: inset 0 0 50px rgba(251, 113, 133, .3), 0 0 36px rgba(251, 113, 133, .3);
  }
  100% {
    border-color: rgba(251, 113, 133, .42);
    box-shadow: inset 0 0 50px rgba(251, 113, 133, .08), 0 0 36px rgba(251, 113, 133, .08);
  }
}

.node-tag {
  font-size: .56rem;
  font-weight: 700;
  letter-spacing: .1em;
  white-space: nowrap;
  color: var(--c-tag);
}
.node-note {
  font-size: .6rem;
  color: rgba(245, 245, 247, .78);
  letter-spacing: .02em;
  white-space: nowrap;
}
.node-pulse {
  position: absolute;
  top: 7px;
  right: 7px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--c-pulse);
  box-shadow: 0 0 10px var(--c-pulse), 0 0 18px var(--c-pulse);
  opacity: 0;
}
.on-l1 .node-pulse { animation: pulse-cycle-l1 6s ease-in-out infinite; }
.on-l2 .node-pulse { animation: pulse-cycle-l2 6s ease-in-out infinite; }
.on-l3 .node-pulse { animation: pulse-cycle-l3 6s ease-in-out infinite; }
@keyframes pulse-cycle-l1 {
  0%, 3%   { opacity: 1; transform: scale(1.3); }
  30%, 100% { opacity: 0; transform: scale(.4); }
}
@keyframes pulse-cycle-l2 {
  0%, 33%   { opacity: 0; transform: scale(.4); }
  36%, 63%  { opacity: 1; transform: scale(1.3); }
  66%, 100% { opacity: 0; transform: scale(.4); }
}
@keyframes pulse-cycle-l3 {
  0%, 66%   { opacity: 0; transform: scale(.4); }
  69%, 96%  { opacity: 1; transform: scale(1.3); }
  100%      { opacity: 0; transform: scale(.4); }
}

/* 中央核心球（莫比乌斯自身） */
.orbit-core {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .4rem;
  z-index: 2;
}
.mo-avatar--sm {
  width: 64px;
  height: 64px;
  font-size: 64px;
}
.core-tag {
  font-size: .58rem;
  font-weight: 700;
  letter-spacing: .14em;
  padding: .2rem .6rem;
  border-radius: 999px;
  color: #0a0a18;
  background: var(--grad-brand);
  box-shadow: 0 4px 14px rgba(167, 139, 250, .45);
  white-space: nowrap;
}

/* 外环粒子定期坍缩到核心（产出被吸收为新版本） */
.collapse-particle {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 1;
  animation: collapse-in 4.8s cubic-bezier(.4, .05, .7, 1) infinite;
}
.collapse-particle.cp1 { background: #fb7185; box-shadow: 0 0 8px #fb7185; --start: 0deg;   animation-delay: 0s; }
.collapse-particle.cp2 { background: #c4b5fd; box-shadow: 0 0 8px #c4b5fd; --start: 90deg;  animation-delay: -1.2s; }
.collapse-particle.cp3 { background: #5eead4; box-shadow: 0 0 8px #5eead4; --start: 180deg; animation-delay: -2.4s; }
.collapse-particle.cp4 { background: #fde68a; box-shadow: 0 0 8px #fde68a; --start: 270deg; animation-delay: -3.6s; }
@keyframes collapse-in {
  0% {
    transform: translate(-50%, -50%) rotate(var(--start)) translateY(-150px) scale(1);
    opacity: 0;
  }
  18% { opacity: 1; }
  82% { opacity: 1; }
  100% {
    transform: translate(-50%, -50%) rotate(var(--start)) translateY(-30px) scale(.35);
    opacity: 0;
  }
}

/* ---------- feat-4 编队：静态卡片网格（仿 feat-3 pillars-grid） ---------- */
.media-fleet {
  padding: 1.6rem 1.4rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: visible;
}
.research-fleet {
  width: 100%;
  max-width: 1080px;
  margin: 3rem auto 0;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.fleet-banner {
  position: relative;
  text-align: center;
  padding: .85rem 1.1rem .95rem;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(167, 139, 250, .14), rgba(45, 212, 191, .06));
  border: 1px solid rgba(167, 139, 250, .42);
  overflow: hidden;
}
.fleet-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(167, 139, 250, .15), transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(94, 234, 212, .12), transparent 50%);
  pointer-events: none;
}
.banner-tag {
  display: block;
  font-size: .54rem;
  letter-spacing: .2em;
  color: rgba(94, 234, 212, .85);
  margin-bottom: .28rem;
  font-weight: 700;
  position: relative;
}
.banner-title {
  display: block;
  font-size: .98rem;
  font-weight: 800;
  color: #f1f5f9;
  letter-spacing: .04em;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
}
.banner-meta {
  display: block;
  font-size: .65rem;
  color: rgba(245, 245, 247, .62);
  margin-top: .3rem;
  line-height: 1.5;
  position: relative;
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: .9rem;
}
.research-card {
  display: flex;
  flex-direction: column;
  gap: .75rem;
  padding: 1.1rem 1rem 1.05rem;
  border-radius: 14px;
  background: linear-gradient(160deg, rgba(255, 255, 255, .045), rgba(255, 255, 255, .015));
  border: 1px solid rgba(255, 255, 255, .1);
  backdrop-filter: blur(8px);
  transition: transform .4s var(--ease), border-color .4s var(--ease), box-shadow .4s var(--ease), background .4s var(--ease);
}
.research-card:hover {
  transform: translateY(-4px);
  border-color: rgba(167, 139, 250, .5);
  background: linear-gradient(160deg, rgba(167, 139, 250, .1), rgba(94, 234, 212, .04));
  box-shadow: 0 16px 36px rgba(167, 139, 250, .18);
}
.research-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .08rem;
  background: linear-gradient(135deg, rgba(45, 212, 191, .25), rgba(129, 140, 248, .2));
  border: 1.5px solid rgba(94, 234, 212, .55);
  flex: none;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .1);
}
.research-icon .ic-en {
  font-size: .68rem;
  font-weight: 800;
  color: #5eead4;
  letter-spacing: .06em;
  text-transform: uppercase;
  line-height: 1;
}
.research-icon .ic-cn {
  font-size: .58rem;
  font-weight: 600;
  color: rgba(245, 245, 247, .85);
  letter-spacing: .12em;
  line-height: 1;
}
.research-card:nth-child(4n+2) .research-icon {
  background: linear-gradient(135deg, rgba(129, 140, 248, .26), rgba(94, 234, 212, .16));
  border-color: rgba(129, 140, 248, .55);
}
.research-card:nth-child(4n+2) .research-icon .ic-en { color: #a5b4fc; }
.research-card:nth-child(4n+3) .research-icon {
  background: linear-gradient(135deg, rgba(167, 139, 250, .28), rgba(129, 140, 248, .16));
  border-color: rgba(167, 139, 250, .55);
}
.research-card:nth-child(4n+3) .research-icon .ic-en { color: #c4b5fd; }
.research-card:nth-child(4n+4) .research-icon {
  background: linear-gradient(135deg, rgba(251, 113, 133, .26), rgba(167, 139, 250, .16));
  border-color: rgba(251, 113, 133, .55);
}
.research-card:nth-child(4n+4) .research-icon .ic-en { color: #fda4af; }
.research-body { min-width: 0; flex: 1; }
.research-body h4 {
  margin: 0 0 .25rem;
  font-size: .92rem;
  font-weight: 700;
  color: #f1f5f9;
  letter-spacing: .02em;
}
.research-body p {
  margin: 0;
  font-size: .7rem;
  color: rgba(245, 245, 247, .68);
  line-height: 1.55;
}

/* ===== 拓扑版（首席 / 流水线 / 算力 / 共享黑板） ===== */
.fleet-topo {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: .35rem;
}
.topo-layer {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: .8rem;
}
.topo-chief {
  padding: .25rem 0 .15rem;
}
.topo-chief .research-card {
  max-width: 280px;
  flex-direction: row;
  align-items: center;
  gap: .85rem;
  padding: .85rem 1.15rem;
  background: linear-gradient(135deg, rgba(167, 139, 250, .18), rgba(34, 211, 238, .08));
  border: 1.5px solid rgba(167, 139, 250, .55);
  box-shadow: 0 0 26px rgba(167, 139, 250, .22);
}
.topo-chief .research-icon {
  width: 52px; height: 52px;
}
.topo-chief .research-body h4 { font-size: .98rem; }
.topo-chief .research-body p { font-size: .72rem; }

.topo-pair {
  gap: 1.4rem;
}
.topo-pair .research-card {
  max-width: 260px;
  flex: 0 1 260px;
}

.topo-pipeline {
  gap: .35rem;
  flex-wrap: nowrap;
}
.topo-pipeline .research-card {
  flex: 1 1 0;
  min-width: 0;
  padding: .65rem .55rem .6rem;
  gap: .4rem;
  align-items: center;
  flex-direction: column;
  text-align: center;
}
.topo-pipeline .research-icon {
  width: 42px; height: 42px;
  border-radius: 11px;
}
.topo-pipeline .research-icon .ic-en { font-size: .6rem; }
.topo-pipeline .research-icon .ic-cn { font-size: .52rem; }
.topo-pipeline .research-body h4 { font-size: .8rem; margin: 0; }
.topo-pipeline .research-body p { font-size: .62rem; line-height: 1.4; }

.topo-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  align-self: center;
  font-size: 1rem;
  font-weight: 800;
  color: rgba(167, 139, 250, .8);
  text-shadow: 0 0 12px rgba(167, 139, 250, .55);
  animation: topoArrowPulse 2.2s ease-in-out infinite;
}
@keyframes topoArrowPulse {
  0%, 100% { opacity: .55; transform: translateX(0); }
  50%      { opacity: 1;   transform: translateX(2px); }
}

.topo-trunk {
  width: 1px;
  height: 18px;
  margin: 0 auto;
  background: linear-gradient(180deg, rgba(167, 139, 250, .65), rgba(167, 139, 250, .1));
}
.topo-trunk--dashed {
  width: 100%;
  height: 1px;
  background: none;
  border-top: 1px dashed rgba(94, 234, 212, .35);
  margin: .25rem auto;
}

/* 算力群体层 */
.topo-compute {
  flex-direction: column;
  gap: .55rem;
  padding: .6rem 0 .2rem;
}
.compute-label {
  font-size: .56rem;
  font-weight: 700;
  letter-spacing: .22em;
  color: rgba(94, 234, 212, .75);
  text-align: center;
}
.compute-nodes {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: .6rem;
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
}
.compute-node {
  position: relative;
  padding: .45rem .6rem .4rem;
  border-radius: 10px;
  background: linear-gradient(160deg, rgba(255, 255, 255, .05), rgba(255, 255, 255, .015));
  border: 1px solid rgba(94, 234, 212, .35);
  display: flex;
  flex-direction: column;
  gap: .1rem;
  overflow: hidden;
}
.compute-node::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(94, 234, 212, .12), transparent 70%);
  pointer-events: none;
  opacity: .6;
}
.compute-node .cn-name {
  font-size: .76rem;
  font-weight: 800;
  color: #f1f5f9;
  letter-spacing: .02em;
  position: relative;
}
.compute-node .cn-sub {
  font-size: .58rem;
  color: rgba(245, 245, 245, .55);
  letter-spacing: .04em;
  position: relative;
}
.compute-node .cn-dot {
  position: absolute;
  top: 8px;
  right: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  animation: computeDotPulse 2.4s ease-in-out infinite;
}
.cn-dot--cyan { background: #22d3ee; box-shadow: 0 0 8px #22d3ee; }
.cn-dot--indigo { background: #818cf8; box-shadow: 0 0 8px #818cf8; animation-delay: .8s; }
@keyframes computeDotPulse {
  0%, 100% { opacity: .4; transform: scale(.85); }
  50%      { opacity: 1;  transform: scale(1.1); }
}

/* 共享黑板 */
.shared-board {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .85rem;
  padding: .85rem 1.2rem;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(34, 211, 238, .1), rgba(167, 139, 250, .08));
  border: 1.5px dashed rgba(94, 234, 212, .5);
  overflow: hidden;
  margin-top: .2rem;
}
.shared-board::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(94, 234, 212, .08), transparent);
  background-size: 200% 100%;
  animation: sharedBoardFlow 6s linear infinite;
  pointer-events: none;
}
@keyframes sharedBoardFlow {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
.board-pulse {
  width: 8px; height: 8px; border-radius: 50%;
  background: #5eead4;
  box-shadow: 0 0 12px #5eead4;
  animation: computeDotPulse 1.8s ease-in-out infinite;
  flex: 0 0 auto;
}
.board-label {
  font-size: .6rem;
  font-weight: 800;
  letter-spacing: .22em;
  color: #5eead4;
  position: relative;
}
.board-text {
  font-size: .72rem;
  color: rgba(245, 245, 245, .82);
  letter-spacing: .02em;
  line-height: 1.5;
  position: relative;
}

@media (max-width: 880px) {
  .topo-pipeline { flex-wrap: wrap; justify-content: center; }
  .topo-pipeline .research-card { flex: 0 1 calc(33% - .5rem); min-width: 90px; }
  .topo-arrow { display: none; }
  .compute-nodes { grid-template-columns: repeat(2, 1fr); }
  .topo-chief .research-card { max-width: 100%; }
  .topo-pair { flex-direction: column; gap: .6rem; }
  .topo-pair .research-card { max-width: 100%; }
  .shared-board { flex-direction: column; gap: .35rem; text-align: center; }
}

/* 共享 caption（仅 ② 用，④ 已静态化） */
.orbit-caption {
  display: flex;
  align-items: center;
  gap: .65rem;
  flex-wrap: wrap;
  justify-content: center;
}
.caption-pill {
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .08em;
  padding: .25rem .65rem;
  border-radius: 999px;
  color: #0a0a18;
  background: var(--grad-brand);
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  box-shadow: 0 4px 14px rgba(167, 139, 250, .35);
}
.caption-pill .status-dot { background: #0a0a18 !important; }
.caption-text {
  font-size: .72rem;
  color: rgba(245, 245, 247, .7);
  letter-spacing: .04em;
}
@media (max-width: 1100px) {
  .research-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .evolve-orbit { max-width: 280px; }
  .research-grid { grid-template-columns: 1fr; }
  .research-fleet { margin-top: 2rem; }
  .media-fleet { padding: 1.2rem 1rem; }
  .mo-avatar--sm { width: 52px; height: 52px; font-size: 52px; }
}

/* ===== feat-5: 算力集群拓扑 ===== */
.media-cluster { padding: 1rem; display: flex; flex-direction: column; gap: .8rem; }
.cluster-svg {
  width: 100%;
  height: auto;
  max-height: 380px;
}
.cluster-tag {
  display: flex;
  gap: .55rem;
  justify-content: center;
  flex-wrap: wrap;
}
.tag-pill {
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--text-dark);
  background: rgba(255,255,255,.7);
  border: 1px solid rgba(15,23,42,.1);
  padding: .35rem .7rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: .35rem;
}
.tag-pill .status-dot { width: 6px; height: 6px; }

/* ===== feat-6: 小莫多端对话 ===== */
.media-dialog { padding: 1.2rem; }
.dialog-stage {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: .9rem;
  width: 100%;
}
@media (max-width: 720px) {
  .dialog-stage { grid-template-columns: 1fr; gap: .6rem; }
  .dialog-flow { display: none; }
}
.dialog-phone {
  width: 150px;
  background: linear-gradient(180deg, #1a1a2e, #0a0a18);
  border: 1.5px solid rgba(167,139,250,.5);
  border-radius: 22px;
  padding: 8px;
  position: relative;
  box-shadow: 0 22px 48px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.06);
}
.phone-notch {
  position: absolute;
  top: 8px; left: 50%;
  transform: translateX(-50%);
  width: 48px; height: 6px;
  background: #000;
  border-radius: 999px;
  z-index: 2;
}
.phone-screen {
  background: linear-gradient(160deg, #1c0a30, #050018);
  border-radius: 14px;
  padding: 1.4rem .55rem .55rem;
  min-height: 200px;
  display: flex;
  flex-direction: column;
  gap: .55rem;
}
.phone-header {
  display: flex;
  align-items: center;
  gap: .45rem;
  padding: 0 .2rem .5rem;
  border-bottom: 1px solid rgba(255,255,255,.06);
  margin-bottom: .3rem;
}
.mo-avatar {
  position: relative;
  display: inline-block;
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  font-size: 30px;
  border-radius: 9999px;
  isolation: isolate;
  overflow: visible;
  transform-origin: 50% 50%;
  animation: mo-life-float 10.5s ease-in-out infinite;
}
.mo-avatar__field,
.mo-avatar__ring,
.mo-avatar__core,
.mo-avatar__particle {
  position: absolute;
  border-radius: 9999px;
  pointer-events: none;
}
.mo-avatar__field {
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(circle at 35% 29%, rgba(255, 255, 255, .96) 0 5%, transparent 16%),
    radial-gradient(circle at 62% 56%, rgba(20, 184, 166, .64) 0 10%, transparent 38%),
    radial-gradient(circle at 35% 70%, rgba(251, 113, 133, .46) 0 8%, transparent 33%),
    radial-gradient(circle at 72% 28%, rgba(250, 204, 21, .42) 0 7%, transparent 30%),
    conic-gradient(from 140deg, rgba(56, 189, 248, .88), rgba(129, 140, 248, .82), rgba(236, 72, 153, .58), rgba(45, 212, 191, .92), rgba(56, 189, 248, .88));
  box-shadow:
    inset 0 0 .34em rgba(255, 255, 255, .32),
    inset 0 -.14em .32em rgba(15, 23, 42, .30),
    0 0 .36em rgba(125, 211, 252, .38),
    0 0 .72em rgba(45, 212, 191, .20);
  animation: mo-field-breathe 7.4s ease-in-out infinite;
}
.mo-avatar__ring {
  z-index: 1;
  opacity: .62;
  border: 1px solid rgba(224, 242, 254, .34);
  box-shadow: 0 0 .3em rgba(125, 211, 252, .18);
}
.mo-avatar__ring--outer {
  inset: 8%;
  border-radius: 46% 54% 42% 58% / 55% 42% 58% 45%;
  animation: mo-ring-turn 13s linear infinite;
}
.mo-avatar__ring--inner {
  inset: 25%;
  border-radius: 58% 42% 54% 46% / 43% 57% 41% 59%;
  border-color: rgba(253, 186, 116, .38);
  animation: mo-ring-turn-reverse 9.5s linear infinite;
}
.mo-avatar__core {
  z-index: 2;
  left: 36%;
  top: 34%;
  width: .28em;
  height: .28em;
  background:
    radial-gradient(circle, rgba(255, 255, 255, 1) 0 22%, rgba(165, 243, 252, .92) 23% 46%, rgba(56, 189, 248, .24) 47% 100%);
  box-shadow:
    0 0 .18em rgba(255, 255, 255, .78),
    0 0 .42em rgba(125, 211, 252, .58),
    0 0 .74em rgba(45, 212, 191, .36);
  animation: mo-core-pulse 5.8s ease-in-out infinite;
}
.mo-avatar__particle {
  z-index: 2;
  width: .07em;
  height: .07em;
  background: rgba(224, 242, 254, .95);
  box-shadow: 0 0 .16em currentColor, 0 0 .28em currentColor;
  animation-duration: 8.8s;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
}
.mo-avatar__particle--1  { left: 47%; top: 5%;  color: #e0f2fe; animation-name: mo-particle-drift-a; animation-delay: -1.1s; }
.mo-avatar__particle--2  { left: 63%; top: 10%; width: .055em; height: .055em; color: #a7f3d0; animation-name: mo-particle-drift-b; animation-delay: -4.3s; }
.mo-avatar__particle--3  { left: 75%; top: 22%; color: #fde68a; animation-name: mo-particle-drift-c; animation-delay: -2.6s; }
.mo-avatar__particle--4  { left: 86%; top: 42%; width: .052em; height: .052em; color: #bae6fd; animation-name: mo-particle-drift-b; animation-delay: -6.1s; }
.mo-avatar__particle--5  { left: 76%; top: 66%; width: .08em;  height: .08em;  color: #fda4af; animation-name: mo-particle-drift-a; animation-delay: -3.7s; }
.mo-avatar__particle--6  { left: 60%; top: 80%; color: #99f6e4; animation-name: mo-particle-drift-c; animation-delay: -5.2s; }
.mo-avatar__particle--7  { left: 42%; top: 86%; width: .052em; height: .052em; color: #bfdbfe; animation-name: mo-particle-drift-b; animation-delay: -7.4s; }
.mo-avatar__particle--8  { left: 22%; top: 76%; color: #c4b5fd; animation-name: mo-particle-drift-a; animation-delay: -2.1s; }
.mo-avatar__particle--9  { left: 10%; top: 57%; width: .06em;  height: .06em;  color: #fed7aa; animation-name: mo-particle-drift-c; animation-delay: -6.8s; }
.mo-avatar__particle--10 { left: 8%;  top: 36%; color: #67e8f9; animation-name: mo-particle-drift-b; animation-delay: -1.8s; }
.mo-avatar__particle--11 { left: 18%; top: 18%; width: .055em; height: .055em; color: #fbcfe8; animation-name: mo-particle-drift-c; animation-delay: -5.8s; }
.mo-avatar__particle--12 { left: 32%; top: 11%; color: #bbf7d0; animation-name: mo-particle-drift-a; animation-delay: -3.1s; }
@keyframes mo-life-float {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1) rotate(0deg); }
  25%      { transform: translate3d(.035em, -.045em, 0) scale(1.025) rotate(1.5deg); }
  52%      { transform: translate3d(-.025em, .025em, 0) scale(.985) rotate(-1deg); }
  78%      { transform: translate3d(.025em, .04em, 0) scale(1.015) rotate(.8deg); }
}
@keyframes mo-field-breathe {
  0%, 100% { opacity: .92; filter: saturate(1.18) brightness(1); transform: scale(.98); border-radius: 50%; }
  35%      { opacity: 1;   filter: saturate(1.38) brightness(1.08); transform: scale(1.035); border-radius: 45% 55% 48% 52% / 56% 46% 54% 44%; }
  70%      { opacity: .86; filter: saturate(1.08) brightness(.98); transform: scale(1.005); border-radius: 56% 44% 57% 43% / 45% 58% 42% 55%; }
}
@keyframes mo-ring-turn         { to { transform: rotate(360deg); } }
@keyframes mo-ring-turn-reverse { to { transform: rotate(-360deg); } }
@keyframes mo-core-pulse {
  0%, 100% { transform: translate3d(0, 0, 0) scale(.94); opacity: .86; }
  42%      { transform: translate3d(.035em, -.02em, 0) scale(1.18); opacity: 1; }
  72%      { transform: translate3d(-.02em, .035em, 0) scale(1.02); opacity: .92; }
}
@keyframes mo-particle-drift-a {
  0%, 100% { transform: translate3d(0, 0, 0) scale(.82); opacity: .42; }
  38%      { transform: translate3d(.08em, -.055em, 0) scale(1.28); opacity: 1; }
  70%      { transform: translate3d(-.05em, .07em, 0) scale(.96); opacity: .66; }
}
@keyframes mo-particle-drift-b {
  0%, 100% { transform: translate3d(0, 0, 0) scale(.9); opacity: .5; }
  33%      { transform: translate3d(-.07em, -.035em, 0) scale(1.16); opacity: .92; }
  68%      { transform: translate3d(.06em, .075em, 0) scale(.84); opacity: .55; }
}
@keyframes mo-particle-drift-c {
  0%, 100% { transform: translate3d(0, 0, 0) scale(.78); opacity: .38; }
  45%      { transform: translate3d(.045em, .08em, 0) scale(1.22); opacity: .96; }
  76%      { transform: translate3d(-.075em, -.045em, 0) scale(.94); opacity: .62; }
}
.mo-name {
  font-size: .8rem;
  font-weight: 600;
  color: #f1f5f9;
}
.mo-status {
  font-size: .65rem;
  color: #5eead4;
  display: flex;
  align-items: center;
  gap: .25rem;
}
.mo-status .status-dot { width: 5px; height: 5px; }
.phone-msg {
  padding: .42rem .55rem;
  border-radius: 12px;
  font-size: .72rem;
  line-height: 1.45;
}
.phone-msg .msg-meta {
  display: block;
  font-size: .58rem;
  opacity: .55;
  margin-bottom: .15rem;
}
.phone-msg.user {
  background: rgba(255,255,255,.06);
  color: #e2e8f0;
  border-bottom-right-radius: 4px;
  align-self: flex-end;
}
.phone-msg.mo {
  background: linear-gradient(135deg, rgba(45,212,191,.18), rgba(129,140,248,.18));
  border: 1px solid rgba(45,212,191,.3);
  color: #ecfeff;
  border-bottom-left-radius: 4px;
  align-self: flex-start;
  display: flex;
  align-items: center;
  gap: .4rem;
  flex-wrap: wrap;
}
.mo-wave {
  display: inline-flex;
  gap: 2px;
  align-items: center;
  height: 14px;
}
.mo-wave span {
  width: 2px;
  background: linear-gradient(180deg, #5eead4, #2dd4bf);
  border-radius: 1px;
  animation: wave 1s ease-in-out infinite;
}
.mo-wave span:nth-child(1) { height: 4px; animation-delay: 0s; }
.mo-wave span:nth-child(2) { height: 10px; animation-delay: .12s; }
.mo-wave span:nth-child(3) { height: 14px; animation-delay: .24s; }
.mo-wave span:nth-child(4) { height: 10px; animation-delay: .36s; }
.mo-wave span:nth-child(5) { height: 4px; animation-delay: .48s; }
@keyframes wave {
  0%, 100% { transform: scaleY(.4); opacity: .6; }
  50% { transform: scaleY(1); opacity: 1; }
}

.dialog-flow {
  position: relative;
  height: 60px;
  min-width: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.flow-line {
  position: absolute;
  top: 50%;
  left: 0; right: 14px;
  height: 2px;
  background: linear-gradient(90deg, rgba(167,139,250,.1), rgba(167,139,250,.6), rgba(167,139,250,.1));
  border-radius: 1px;
}
.flow-particle {
  position: absolute;
  top: 50%;
  width: 8px; height: 8px;
  border-radius: 50%;
  transform: translateY(-50%);
  animation: particleRun 2s linear infinite;
}
.flow-particle.p1 { background: #2dd4bf; box-shadow: 0 0 8px #2dd4bf; animation-delay: 0s; }
.flow-particle.p2 { background: #818cf8; box-shadow: 0 0 8px #818cf8; animation-delay: -.66s; }
.flow-particle.p3 { background: #fb7185; box-shadow: 0 0 8px #fb7185; animation-delay: -1.33s; }
@keyframes particleRun {
  0% { left: 0; opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { left: calc(100% - 22px); opacity: 0; }
}
.flow-arrow {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(167,139,250,.8);
  font-size: 1rem;
  animation: arrowGlow 1.6s ease-in-out infinite;
}
@keyframes arrowGlow {
  0%, 100% { opacity: .5; }
  50% { opacity: 1; }
}

.dialog-products {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  min-width: 130px;
}
.product-card {
  display: flex;
  align-items: center;
  gap: .55rem;
  padding: .55rem .7rem;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 10px;
  transition: transform .35s var(--ease), border-color .35s var(--ease);
  animation: productIn .6s var(--ease) backwards;
}
.product-card:nth-child(1) { animation-delay: .1s; }
.product-card:nth-child(2) { animation-delay: .25s; }
.product-card:nth-child(3) { animation-delay: .4s; }
@keyframes productIn {
  from { opacity: 0; transform: translateX(8px); }
  to { opacity: 1; transform: translateX(0); }
}
.product-card:hover {
  transform: translateX(-3px);
  border-color: rgba(167,139,250,.5);
}
.product-icon {
  width: 26px; height: 26px;
  border-radius: 7px;
  background: linear-gradient(135deg, rgba(45,212,191,.25), rgba(129,140,248,.2));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #5eead4;
  flex: none;
}
.product-icon svg { width: 14px; height: 14px; }
.product-name {
  font-size: .8rem;
  font-weight: 600;
  color: #f1f5f9;
  flex: 1;
}
.product-tag {
  font-size: .62rem;
  color: rgba(167,139,250,.8);
  background: rgba(167,139,250,.1);
  padding: .12rem .42rem;
  border-radius: 999px;
  letter-spacing: .03em;
}
.dialog-caption {
  text-align: center;
  margin-top: 1rem;
  font-size: .76rem;
  color: rgba(245,245,247,.55);
  letter-spacing: .06em;
}

/* 自主孵化：真实扩展卡片 */
.incubate-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.3rem;
  margin: 4rem 0 0;
}
.incubate-grid--center {
  margin: 3rem auto 0;
  max-width: 1080px;
  justify-content: center;
}
@media (max-width: 1180px) { .incubate-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 760px) { .incubate-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .incubate-grid { grid-template-columns: 1fr; } }

/* ===== 视频展示页 ===== */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.8rem;
  margin: 4rem 0 0;
}
@media (max-width: 880px) { .showcase-grid { grid-template-columns: 1fr; } }

.showcase-card {
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, .04);
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 20px;
  padding: 1.4rem;
  transition: transform .35s var(--ease), border-color .35s var(--ease),
              box-shadow .35s var(--ease);
}
.showcase-card:hover {
  transform: translateY(-6px);
  border-color: rgba(167, 139, 250, .4);
  box-shadow: 0 30px 70px rgba(167, 139, 250, .18);
}
.showcase-video {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 14px;
  overflow: hidden;
  background: #05030f;
  margin-bottom: 1.2rem;
  border: 1px solid rgba(167, 139, 250, .25);
}
.showcase-video video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  background: transparent;
  object-fit: cover;
}
.showcase-video.placeholder::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 30%, rgba(45, 212, 191, .22), transparent 55%),
    radial-gradient(circle at 75% 65%, rgba(244, 114, 182, .18), transparent 55%),
    linear-gradient(135deg, #0a0a18 0%, #1a0a30 100%);
  z-index: 0;
}
.showcase-video.placeholder::after {
  content: "▶ 视频待接入";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .9rem;
  letter-spacing: .12em;
  color: rgba(245, 245, 247, .55);
  z-index: 1;
  pointer-events: none;
}
.showcase-video video[src] ~ .showcase-badge,
.showcase-video:not(.placeholder) .showcase-badge { /* badge 始终显示，但视频接入后提升对比度 */ }

.showcase-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 3;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  padding: .32rem .7rem;
  border-radius: 999px;
  color: #0a0a18;
  background: var(--grad-brand);
  box-shadow: 0 6px 16px rgba(167, 139, 250, .35);
}

.showcase-card h3 {
  font-size: 1.18rem;
  font-weight: 600;
  margin: 0 0 .65rem;
  color: var(--text-light);
  letter-spacing: .005em;
  line-height: 1.4;
}
.showcase-card p {
  margin: 0;
  color: rgba(245, 245, 247, .72);
  line-height: 1.7;
  font-size: .94rem;
}

/* 浅色章节里的展示卡：白底 + 深色文字 */
.section-light .showcase-card {
  background: #ffffff;
  border-color: rgba(0,0,0,.06);
  box-shadow: 0 10px 32px rgba(0,0,0,.05);
}
.section-light .showcase-card:hover {
  border-color: rgba(167,139,250,.4);
  box-shadow: 0 30px 70px rgba(167,139,250,.16);
}
.section-light .showcase-card h3 { color: var(--text-dark); }
.section-light .showcase-card p { color: rgba(29,29,31,.68); }

.ext-card {
  display: flex;
  flex-direction: column;
  padding: 1.6rem 1.4rem 1.3rem;
  background: #fff;
  border-radius: 20px;
  border: 1px solid rgba(0,0,0,.05);
  box-shadow: 0 10px 28px rgba(0,0,0,.05);
  color: var(--text-dark);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease),
              border-color .35s var(--ease);
  position: relative;
  overflow: hidden;
}
.ext-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--grad-brand);
  opacity: 0;
  transition: opacity .35s var(--ease);
}
.ext-card:hover {
  transform: translateY(-8px);
  border-color: rgba(167,139,250,.3);
  box-shadow: 0 28px 60px rgba(167,139,250,.18);
}
.ext-card:hover::before { opacity: 1; }

.ext-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(167,139,250,.12), rgba(34,211,238,.06));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.1rem;
  overflow: hidden;
}
.ext-icon img,
.ext-icon svg {
  width: 36px;
  height: 36px;
  display: block;
}
.ext-card h4 {
  font-size: 1.08rem;
  font-weight: 600;
  margin: 0 0 .55rem;
  letter-spacing: .01em;
  line-height: 1.35;
}
.ext-card p {
  font-size: .88rem;
  line-height: 1.6;
  color: var(--muted-dark);
  margin: 0;
  flex: 1;
}
.ext-cta {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  font-size: .85rem;
  font-weight: 600;
  letter-spacing: .03em;
  color: var(--brand-2);
  border-top: 1px solid rgba(0,0,0,.06);
  padding-top: .85rem;
  margin: 0;
}
.ext-cta i {
  font-style: normal;
  transition: transform .25s var(--ease);
}
.ext-card:hover .ext-cta i { transform: translate(2px, -2px); }

/* ---------- L1/L2/L3 列表 ---------- */
.tier-list {
  list-style: none;
  padding: 0;
  margin: 2rem 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.tier-list li {
  padding: 1.2rem 1.4rem;
  border-radius: 14px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
}
.tier-tag {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .15em;
  margin-bottom: .5rem;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.tier-list p {
  margin: 0;
  color: rgba(245,245,247,.82);
  line-height: 1.65;
}

/* ---------- 团队协作 4 支柱 ---------- */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 4rem;
}
@media (max-width: 760px) { .pillars-grid { grid-template-columns: 1fr; } }
.pillar {
  background: #fff;
  border-radius: var(--radius);
  padding: 2.5rem;
  border: 1px solid rgba(0,0,0,.06);
  box-shadow: 0 16px 40px rgba(0,0,0,.04);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.pillar:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 60px rgba(167,139,250,.12);
}
.pillar-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 1.2rem;
  color: var(--brand-2);
}
.pillar-icon svg { width: 100%; height: 100%; }
.pillar h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin: 0 0 .8rem;
}
.pillar p { color: var(--muted-dark); line-height: 1.65; margin: 0; }

/* ---------- Finale ---------- */
.finale {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse at 50% 50%, #11062b 0%, #030014 70%, #000 100%);
}
#finale-canvas {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  z-index: 0;
  opacity: .85;
}
.finale .container { position: relative; z-index: 2; }

/* ---------- Footer ---------- */
.footer {
  background: #000;
  color: rgba(245,245,247,.6);
  padding: 4rem 1.5rem 3rem;
  text-align: center;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .8rem;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: .6rem;
  color: var(--text-light);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: .08em;
}
.footer-logo { width: 24px; height: 24px; }
.footer-tagline {
  margin: .4rem 0 0;
  font-size: .9rem;
  letter-spacing: .2em;
  opacity: .85;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: .55rem;
}
.footer-tagline a {
  color: inherit;
  text-decoration: none;
  padding: .15rem .1rem;
  border-radius: 6px;
  transition: color .3s var(--ease), background .3s var(--ease);
}
.footer-tagline a:hover,
.footer-tagline a:focus-visible {
  color: var(--brand-2);
  background: rgba(167, 139, 250, .08);
}
.footer-tagline .dot {
  opacity: .5;
  font-weight: 400;
}

/* footer 关键词 + hover 卡片 */
.footer-keyword {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: .15rem .35rem;
  border-radius: 6px;
  cursor: pointer;
  outline: none;
  transition: color .3s var(--ease), background .3s var(--ease);
}
.footer-keyword:hover,
.footer-keyword:focus-visible {
  color: var(--brand-2);
  background: rgba(167, 139, 250, .1);
}
.footer-keyword-name {
  font-weight: 600;
  letter-spacing: .12em;
}
.footer-keyword-card {
  position: absolute;
  bottom: calc(100% + .6rem);
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  width: 280px;
  max-width: 80vw;
  padding: .85rem 1rem;
  border-radius: 12px;
  background: linear-gradient(160deg, #1a1326, #0d0a18);
  color: rgba(245, 245, 247, .85);
  font-size: .72rem;
  font-weight: 400;
  letter-spacing: .02em;
  line-height: 1.65;
  text-align: left;
  border: 1px solid rgba(167, 139, 250, .35);
  box-shadow: 0 18px 40px rgba(0, 0, 0, .5), 0 0 24px rgba(167, 139, 250, .12);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .25s var(--ease), transform .25s var(--ease), visibility .25s var(--ease);
  z-index: 50;
}
.footer-keyword-card::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: #1a1326;
}
.footer-keyword:hover .footer-keyword-card,
.footer-keyword:focus-visible .footer-keyword-card,
.footer-keyword:focus-within .footer-keyword-card {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.footer-copy {
  margin: 1rem 0 0;
  font-size: .8rem;
  opacity: .5;
}
.footer-copy a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px dashed rgba(255, 255, 255, .35);
  padding-bottom: 1px;
  transition: color .25s var(--ease), border-color .25s var(--ease), opacity .25s var(--ease);
}
.footer-copy a:hover,
.footer-copy a:focus-visible {
  color: var(--brand-2);
  border-bottom-color: var(--brand-2);
  opacity: 1;
}
.footer-contact {
  margin: .55rem 0 0;
  font-size: .82rem;
  opacity: .65;
  letter-spacing: .04em;
}
.footer-contact a {
  color: var(--brand-2);
  text-decoration: none;
  transition: color .3s var(--ease), opacity .3s var(--ease);
}
.footer-contact a:hover,
.footer-contact a:focus-visible {
  color: var(--brand-1);
  opacity: 1;
}

/* ---------- 滚动揭示动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .9s var(--ease), transform .9s var(--ease);
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ===== 人机物智算协同（静态 SVG 海报） ===== */
.synergy-poster {
  position: relative;
  margin: 3rem auto 2rem;
  max-width: 1180px;
  border-radius: 24px;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(255, 255, 255, .03), rgba(255, 255, 255, .01));
  border: 1px solid rgba(167, 139, 250, .25);
  box-shadow:
    0 24px 60px rgba(0, 0, 0, .45),
    0 0 40px rgba(34, 211, 238, .08),
    inset 0 0 0 1px rgba(255, 255, 255, .03);
  aspect-ratio: 16 / 9;
}
.synergy-poster::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: radial-gradient(circle at 50% 0%, rgba(167, 139, 250, .12), transparent 60%);
}
.synergy-poster img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
@media (max-width: 880px) {
  .synergy-poster { aspect-ratio: 4 / 3; border-radius: 16px; }
}

/* Research spotlight：首页底部全宽自动播放视频 */
.research-spotlight-video {
  position: relative;
  width: 100%;
  max-width: 1280px;
  margin: 3rem auto 0;
  aspect-ratio: 16 / 9;
  border-radius: 22px;
  overflow: hidden;
  background: #05030f;
  border: 1px solid rgba(167, 139, 250, .25);
  box-shadow: 0 40px 90px rgba(0, 0, 0, .45),
              0 0 0 1px rgba(255, 255, 255, .03) inset;
}
.research-spotlight-video video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  background: transparent;
  object-fit: cover;
}
@media (max-width: 720px) {
  .research-spotlight-video { border-radius: 16px; }
}

/* Hero 演示视频：自动播放、循环、静音 */
.hero-demo-video {
  position: relative;
  width: 100%;
  max-width: 1100px;
  margin: 3.5rem auto 0;
  aspect-ratio: 16 / 9;
  border-radius: 18px;
  overflow: hidden;
  background: #05030f;
  border: 1px solid rgba(167, 139, 250, .28);
  box-shadow: 0 30px 80px rgba(124, 58, 237, .28),
              0 0 0 1px rgba(255, 255, 255, .04) inset;
}
.hero-demo-video video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  background: transparent;
  object-fit: cover;
}
@media (max-width: 720px) {
  .hero-demo-video { border-radius: 14px; margin-top: 2.4rem; }
}

/* feat-4 cluster 动画在 feature-media 内的展示 */
.feature-media .media-placeholder.media-cluster {
  aspect-ratio: auto;
  min-height: 0;
  padding: 1rem;
  margin: 0;
}
.feature-media .cluster-svg {
  display: block;
  width: 100%;
  height: auto;
  max-height: 360px;
}
@media (max-width: 880px) {
  .feature-media .cluster-svg { max-height: 320px; }
}

/* ============================================================
 * 新增：#prologue 时代之问 panel（参考 mobicus，配色对齐 mobius-home）
 * ============================================================ */
#prologue .section-head {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 3rem;
  align-items: end;
  margin-bottom: 3.5rem;
}
@media (max-width: 820px) {
  #prologue .section-head { grid-template-columns: 1fr; gap: 1.4rem; }
}
#prologue .section-head-title .kicker { margin-bottom: 1rem; }
#prologue .section-head-title .display {
  font-size: clamp(2.2rem, 4.6vw, 3.6rem);
  margin: 0;
}
#prologue .section-head-lead {
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  line-height: 1.65;
  color: var(--muted-dark);
  margin: 0;
  padding-bottom: .4rem;
}

#prologue .problem-layout {
  border-radius: var(--radius);
  background: linear-gradient(180deg, #ffffff 0%, #f5f5f7 100%);
  border: 1px solid rgba(0,0,0,.06);
  box-shadow: 0 30px 80px rgba(167,139,250,.10), 0 2px 6px rgba(0,0,0,.04);
  padding: 2.6rem 2.4rem;
}
#prologue .problem-band {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 2rem;
  align-items: center;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(0,0,0,.07);
  margin-bottom: 2rem;
}
@media (max-width: 760px) {
  #prologue .problem-layout { padding: 1.6rem 1.2rem; }
  #prologue .problem-band { grid-template-columns: 1fr; gap: 1.2rem; }
}
#prologue .problem-band-text h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 .7rem;
  color: var(--text-dark);
  letter-spacing: -.005em;
}
#prologue .problem-band-text p {
  font-size: .98rem;
  line-height: 1.65;
  color: var(--muted-dark);
  margin: 0;
}
#prologue .problem-pills {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
  justify-content: flex-start;
}
@media (max-width: 760px) {
  #prologue .problem-pills { justify-content: stretch; }
}
#prologue .chip {
  display: inline-flex;
  align-items: center;
  padding: .4rem .9rem;
  border-radius: 999px;
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .01em;
  border: 1px solid transparent;
  background: rgba(0,0,0,.04);
  color: var(--text-dark);
}
#prologue .chip.pill-cyan {
  background: rgba(34,211,238,.10);
  color: #0ea5b7;
  border-color: rgba(34,211,238,.30);
}
#prologue .chip.pill-violet {
  background: rgba(167,139,250,.12);
  color: #6d5bd0;
  border-color: rgba(167,139,250,.32);
}
#prologue .chip.pill-pink {
  background: rgba(244,114,182,.12);
  color: #db2777;
  border-color: rgba(244,114,182,.32);
}
#prologue .chip.pill-indigo {
  background: rgba(99,102,241,.10);
  color: #4f46e5;
  border-color: rgba(99,102,241,.30);
}

#prologue .cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
}
@media (max-width: 820px) {
  #prologue .cards { grid-template-columns: 1fr; }
}
#prologue .info-card {
  background: #ffffff;
  border-radius: 16px;
  padding: 1.5rem 1.4rem;
  border: 1px solid rgba(0,0,0,.07);
  box-shadow: 0 6px 18px rgba(0,0,0,.04);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
#prologue .info-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 30px rgba(0,0,0,.08);
}
#prologue .info-card strong {
  display: block;
  font-size: 1.02rem;
  font-weight: 700;
  margin-bottom: .55rem;
  color: var(--text-dark);
}
#prologue .info-card p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.6;
  color: var(--muted-dark);
}
#prologue .info-card--accent {
  background: linear-gradient(180deg, rgba(167,139,250,.10), rgba(34,211,238,.05));
  border-color: rgba(167,139,250,.35);
  box-shadow: 0 12px 32px rgba(167,139,250,.14);
}
#prologue .info-card--accent strong {
  background: linear-gradient(120deg, #0ea5b7 0%, #6d5bd0 50%, #db2777 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ============================================================
 * 新增：右侧 Apple 风滚动目录（TOC）
 * ============================================================ */
.page-toc {
  position: fixed;
  right: 32px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 90;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 8px;
  border-radius: 14px;
  background: rgba(255,255,255,.04);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  pointer-events: auto;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  scrollbar-width: none;
}
.page-toc::-webkit-scrollbar { display: none; }
.page-toc.on-light {
  background: rgba(0,0,0,.025);
}
.page-toc-item {
  display: block;
  padding: 6px 14px;
  font-size: 13px;
  line-height: 1.4;
  letter-spacing: .02em;
  color: rgba(255,255,255,.5);
  border-left: 2px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  transition: color .25s var(--ease),
              border-color .25s var(--ease),
              transform .25s var(--ease),
              font-size .25s var(--ease);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 200px;
}
.page-toc-item:hover { color: rgba(255,255,255,.85); }
.page-toc.on-light .page-toc-item { color: rgba(0,0,0,.5); }
.page-toc.on-light .page-toc-item:hover { color: rgba(0,0,0,.85); }

.page-toc-item.is-active {
  color: rgba(255,255,255,.95) !important;
  font-size: 14px;
  font-weight: 600;
  border-left-color: var(--brand-2);
  background: linear-gradient(90deg, rgba(167,139,250,.12), transparent 80%);
  transform: translateX(2px);
}
.page-toc.on-light .page-toc-item.is-active {
  color: var(--text-dark) !important;
  background: linear-gradient(90deg, rgba(167,139,250,.10), transparent 80%);
}

@media (max-width: 1024px) {
  .page-toc { display: none; }
}

/* ============================================================
 * 新增：finale 重构 —— 容纳「莫比乌斯命名」+ 尾声
 * ============================================================ */
.finale {
  flex-direction: column;
  justify-content: center;
  gap: 5rem;
  min-height: 90vh;
  padding-top: 7rem;
  padding-bottom: 7rem;
}
.finale .container { width: 100%; }
.finale-naming-head {
  text-align: center;
  margin-bottom: 3.5rem;
}
.finale-naming-head .kicker { margin-bottom: 1rem; }
.finale-naming-head .display {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  margin: 0;
}
.finale-naming-body {
  text-align: left;
}
.finale-naming-body > .concept-grid { margin-top: 3rem; }
.finale-tail { text-align: center; }