/* ============================================================
   梦想孵化器 — 单页官网样式
   风格：技术实力派 / 数据感 / 未来感（深色 + 青蓝光效 + 动画）
   ============================================================ */

:root {
  --bg: #04070f;
  --bg-alt: #070d1a;
  --panel: rgba(148, 163, 184, 0.05);
  --panel-solid: #0a1120;
  --line: rgba(148, 163, 184, 0.14);
  --line-strong: rgba(34, 211, 238, 0.35);
  --cyan: #22d3ee;
  --blue: #3b82f6;
  --purple: #8b5cf6;
  --text: #e6edf7;
  --muted: #8ca0b8;
  --muted-dim: #5b6b82;
  --radius: 14px;
  --font: "Poppins", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --mono: "SF Mono", "JetBrains Mono", Consolas, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(34, 211, 238, 0.3); color: #fff; }

.container {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ============ 通用组件 ============ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 10px;
  font-family: var(--font);
  font-weight: 500;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease, background 0.25s ease;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(120deg, var(--cyan), var(--blue));
  color: #04121b;
  box-shadow: 0 0 0 1px rgba(34, 211, 238, 0.4), 0 8px 28px rgba(34, 211, 238, 0.25);
}

.btn-primary::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 40%, rgba(255, 255, 255, 0.45) 50%, transparent 60%);
  transform: translateX(-120%);
  transition: transform 0.6s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px rgba(34, 211, 238, 0.6), 0 12px 36px rgba(34, 211, 238, 0.4);
}

.btn-primary:hover::after { transform: translateX(120%); }

.btn-ghost {
  background: rgba(148, 163, 184, 0.06);
  border-color: var(--line);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: var(--line-strong);
  background: rgba(34, 211, 238, 0.08);
  transform: translateY(-2px);
}

.btn-sm { padding: 9px 18px; font-size: 14px; }
.btn-lg { padding: 14px 30px; font-size: 16px; }
.btn-block { width: 100%; }

.kicker {
  display: inline-block;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--cyan);
  margin-bottom: 18px;
  padding: 5px 14px;
  border: 1px solid rgba(34, 211, 238, 0.25);
  border-radius: 999px;
  background: rgba(34, 211, 238, 0.06);
}

.grad-text {
  background: linear-gradient(100deg, var(--cyan) 10%, var(--blue) 45%, var(--purple) 80%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradShift 6s linear infinite;
}

@keyframes gradShift {
  0% { background-position: 0% center; }
  100% { background-position: 200% center; }
}

.section { padding: 110px 0; position: relative; }
.section-alt { background: var(--bg-alt); }

.section-head {
  max-width: 720px;
  margin: 0 auto 64px;
  text-align: center;
}

.section-head h2 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0.01em;
}

.section-sub {
  margin-top: 18px;
  color: var(--muted);
  font-size: 16px;
}

.group-label {
  font-size: 15px;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.06em;
  margin: 56px 0 24px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.group-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--line), transparent);
}

.group-label:first-of-type { margin-top: 0; }

/* ============ 滚动渐显动画（JS 门控：无 JS 时内容默认可见） ============ */

html.js .reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
  transition-delay: calc(var(--d, 0) * 120ms);
}

html.js .reveal.visible { opacity: 1; transform: translateY(0); }

/* ============ 导航 ============ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: background 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease;
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(4, 7, 15, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 26px;
  height: 26px;
  flex: none;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  border-radius: 7px;
  transform: rotate(45deg);
  box-shadow: 0 0 16px rgba(34, 211, 238, 0.5);
  animation: markPulse 3.2s ease-in-out infinite;
}

@keyframes markPulse {
  0%, 100% { box-shadow: 0 0 10px rgba(34, 211, 238, 0.35); }
  50% { box-shadow: 0 0 22px rgba(34, 211, 238, 0.65); }
}

.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 16px; font-weight: 600; letter-spacing: 0.02em; }
.brand-text small { font-family: var(--mono); font-size: 10px; letter-spacing: 0.22em; color: var(--muted-dim); }

.nav-links { display: flex; gap: 30px; }

.nav-links a {
  font-size: 14.5px;
  color: var(--muted);
  position: relative;
  transition: color 0.25s ease;
  padding: 4px 0;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active { color: var(--text); }

.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }

.nav-actions { display: flex; align-items: center; gap: 14px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px 8px;
  cursor: pointer;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ Hero ============ */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 140px 0 80px;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(34, 211, 238, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 211, 238, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 65% at 50% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 65% at 50% 40%, #000 30%, transparent 75%);
}

.hero::before {
  content: "";
  position: absolute;
  width: 720px;
  height: 720px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.09), transparent 65%);
  top: -180px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 0;
  animation: glowDrift 9s ease-in-out infinite alternate;
}

@keyframes glowDrift {
  from { transform: translateX(-58%) scale(1); }
  to { transform: translateX(-42%) scale(1.12); }
}

.hero-inner { position: relative; z-index: 2; text-align: center; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  border: 1px solid rgba(34, 211, 238, 0.3);
  background: rgba(34, 211, 238, 0.06);
  padding: 8px 18px;
  border-radius: 999px;
  margin-bottom: 34px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  animation: pulse 2s ease-out infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(34, 211, 238, 0.6); }
  100% { box-shadow: 0 0 0 12px rgba(34, 211, 238, 0); }
}

.hero-title {
  font-size: clamp(34px, 5.6vw, 62px);
  font-weight: 600;
  line-height: 1.24;
  letter-spacing: 0.01em;
  margin-bottom: 28px;
}

.hero-sub {
  max-width: 760px;
  margin: 0 auto 42px;
  color: var(--muted);
  font-size: clamp(15px, 1.6vw, 17.5px);
  line-height: 1.9;
}

.hero-cta {
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 74px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(10, 17, 32, 0.55);
  backdrop-filter: blur(8px);
  padding: 30px 20px;
  position: relative;
  overflow: hidden;
}

.hero-stats::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(34, 211, 238, 0.07), transparent);
  animation: statSweep 5.5s ease-in-out infinite;
}

@keyframes statSweep {
  0% { left: -60%; }
  55%, 100% { left: 130%; }
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
}

.stat + .stat { border-left: 1px solid var(--line); }

.stat-num {
  font-family: var(--mono);
  font-size: clamp(30px, 3.4vw, 44px);
  font-weight: 600;
  background: linear-gradient(180deg, #fff, var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-variant-numeric: tabular-nums;
}

.stat-label { font-size: 13.5px; color: var(--muted); }

.hero-scanline {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0.55;
  animation: scanGlow 4s ease-in-out infinite;
  z-index: 2;
}

@keyframes scanGlow {
  0%, 100% { opacity: 0.15; }
  50% { opacity: 0.7; }
}

/* ============ 孵化模式 ============ */

.compare {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-solid);
  margin-bottom: 56px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.compare-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 15px;
}

.compare-table th,
.compare-table td {
  padding: 18px 22px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}

.compare-table thead th {
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  background: rgba(148, 163, 184, 0.05);
  letter-spacing: 0.04em;
}

.compare-table thead th.compare-us {
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.07);
}

.compare-table tbody tr:last-child td { border-bottom: none; }

.compare-table tbody tr { transition: background 0.25s ease; }
.compare-table tbody tr:hover { background: rgba(34, 211, 238, 0.04); }

.compare-dim {
  font-weight: 500;
  color: var(--muted);
  white-space: nowrap;
  font-size: 14px;
}

.compare-table td:not(.compare-us) { color: var(--muted); }

.compare-us {
  color: var(--text) !important;
  font-weight: 500;
  background: rgba(34, 211, 238, 0.045);
  border-left: 1px solid rgba(34, 211, 238, 0.18);
  border-right: 1px solid rgba(34, 211, 238, 0.18);
}

.compare-table tbody tr:last-child .compare-us {
  border-bottom: 1px solid rgba(34, 211, 238, 0.18);
}

.split {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 24px;
  align-items: stretch;
}

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-solid);
  padding: 30px;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.panel:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  box-shadow: 0 16px 44px rgba(2, 8, 20, 0.6);
}

.panel-us {
  border-color: rgba(34, 211, 238, 0.28);
  background: linear-gradient(160deg, rgba(34, 211, 238, 0.07), rgba(10, 17, 32, 0.9) 45%);
}

.panel-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 22px;
}

.panel-icon {
  width: 46px;
  height: 46px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: rgba(34, 211, 238, 0.08);
  border: 1px solid rgba(34, 211, 238, 0.22);
  color: var(--cyan);
}

.panel-expert .panel-icon {
  background: rgba(139, 92, 246, 0.08);
  border-color: rgba(139, 92, 246, 0.25);
  color: var(--purple);
}

.panel-head h3 { font-size: 19px; font-weight: 600; }

.panel-tag {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted-dim);
  letter-spacing: 0.05em;
}

.panel-list li {
  padding: 11px 0 11px 26px;
  position: relative;
  color: var(--muted);
  font-size: 15px;
  border-bottom: 1px dashed var(--line);
}

.panel-list li:last-child { border-bottom: none; }

.panel-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 19px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--purple);
  transform: rotate(45deg);
}

.panel-us .panel-list li::before { background: var(--cyan); }
.panel-us .panel-list li { color: var(--text); }

.panel-link {
  display: grid;
  place-items: center;
}

.plus-sign {
  font-size: 30px;
  font-weight: 300;
  color: var(--cyan);
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(34, 211, 238, 0.35);
  border-radius: 50%;
  animation: plusSpin 8s linear infinite;
}

@keyframes plusSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ============ 能力底座 ============ */

.grid { display: grid; gap: 22px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

.cap-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-solid);
  padding: 26px 24px;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.cap-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.cap-card:hover {
  transform: translateY(-6px);
  border-color: var(--line-strong);
  box-shadow: 0 18px 48px rgba(2, 8, 20, 0.65), 0 0 0 1px rgba(34, 211, 238, 0.12);
}

.cap-card:hover::before { transform: scaleX(1); }

.cap-icon {
  display: block;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  margin-bottom: 18px;
  background-repeat: no-repeat;
  background-position: center;
  background-size: 22px;
  border: 1px solid rgba(34, 211, 238, 0.22);
  background-color: rgba(34, 211, 238, 0.07);
}

.icon-dev {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='22' height='22' viewBox='0 0 24 24' fill='none' stroke='%2322d3ee' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='16 18 22 12 16 6'/%3E%3Cpolyline points='8 6 2 12 8 18'/%3E%3C/svg%3E");
}

.icon-ai {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='22' height='22' viewBox='0 0 24 24' fill='none' stroke='%2322d3ee' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 2a4 4 0 0 1 4 4v1a4 4 0 0 1 0 8v1a4 4 0 0 1-8 0v-1a4 4 0 0 1 0-8V6a4 4 0 0 1 4-4z'/%3E%3Cpath d='M12 18v4'/%3E%3C/svg%3E");
}

.icon-ops {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='22' height='22' viewBox='0 0 24 24' fill='none' stroke='%2322d3ee' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='2' y='3' width='20' height='6' rx='2'/%3E%3Crect x='2' y='15' width='20' height='6' rx='2'/%3E%3Cpath d='M6 6h.01M6 18h.01'/%3E%3C/svg%3E");
}

.icon-media {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='22' height='22' viewBox='0 0 24 24' fill='none' stroke='%2322d3ee' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 11l18-5v12L3 13v-2z'/%3E%3Cpath d='M11.6 16.8a3 3 0 1 1-5.8-1.6'/%3E%3C/svg%3E");
}

.cap-card h4 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: 0.01em;
}

.cap-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.75;
}

.cap-sediment {
  background: linear-gradient(165deg, rgba(139, 92, 246, 0.08), var(--panel-solid) 55%);
  border-color: rgba(139, 92, 246, 0.22);
}

.cap-sediment:hover {
  border-color: rgba(139, 92, 246, 0.5);
  box-shadow: 0 18px 48px rgba(2, 8, 20, 0.65), 0 0 0 1px rgba(139, 92, 246, 0.18);
}

.cap-sediment::before { background: linear-gradient(90deg, var(--purple), var(--cyan)); }

.sed-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--purple);
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.28);
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 14px;
  letter-spacing: 0.03em;
}

/* ============ 孵化飞轮 ============ */

.flywheel-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.flywheel-visual {
  display: grid;
  place-items: center;
}

.flywheel-svg {
  width: 100%;
  max-width: 430px;
  height: auto;
  filter: drop-shadow(0 0 24px rgba(34, 211, 238, 0.12));
}

.fly-item {
  display: flex;
  gap: 20px;
  padding: 24px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-solid);
  margin-bottom: 20px;
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.fly-item:last-child { margin-bottom: 0; }

.fly-item:hover {
  transform: translateX(6px);
  border-color: var(--line-strong);
}

.fly-num {
  font-family: var(--mono);
  font-size: 22px;
  font-weight: 600;
  color: var(--cyan);
  flex: none;
  line-height: 1.2;
}

.fly-item h4 { font-size: 17px; font-weight: 600; margin-bottom: 6px; }
.fly-item p { font-size: 14px; color: var(--muted); line-height: 1.7; }

/* ============ 在孵项目 ============ */

.proj-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-solid);
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.proj-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 0%), rgba(34, 211, 238, 0.07), transparent 45%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.proj-card:hover {
  transform: translateY(-6px);
  border-color: var(--line-strong);
  box-shadow: 0 18px 48px rgba(2, 8, 20, 0.65);
}

.proj-card:hover::after { opacity: 1; }

.proj-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.proj-tag {
  font-size: 12.5px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 999px;
  letter-spacing: 0.04em;
}

.tag-ai { color: #22d3ee; background: rgba(34, 211, 238, 0.1); border: 1px solid rgba(34, 211, 238, 0.3); }
.tag-trade { color: #60a5fa; background: rgba(59, 130, 246, 0.12); border: 1px solid rgba(59, 130, 246, 0.32); }
.tag-agri { color: #f0883e; background: rgba(240, 136, 62, 0.1); border: 1px solid rgba(240, 136, 62, 0.3); }
.tag-ops { color: #f45d8c; background: rgba(244, 93, 140, 0.1); border: 1px solid rgba(244, 93, 140, 0.3); }
.tag-chain { color: #3ecf8e; background: rgba(62, 207, 142, 0.1); border: 1px solid rgba(62, 207, 142, 0.3); }

.proj-no {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted-dim);
  letter-spacing: 0.1em;
}

.proj-card h3 {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.proj-card > p {
  font-size: 14.5px;
  color: var(--muted);
  line-height: 1.8;
  flex: 1;
}

.proj-foot {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
}

.proj-sed { color: var(--muted-dim); font-family: var(--mono); letter-spacing: 0.05em; }

.proj-sed-val {
  color: var(--cyan);
  font-weight: 500;
}

.proj-sed-val::before {
  content: "→ ";
  color: var(--muted-dim);
}

/* ============ 信任背书 ============ */

.trust {
  padding: 70px 0;
  border-block: 1px solid var(--line);
  background:
    radial-gradient(600px 200px at 50% 0%, rgba(34, 211, 238, 0.06), transparent),
    var(--bg);
}

.trust-item {
  text-align: center;
  padding: 10px 16px;
}

.trust-item h4 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}

.trust-item h4::before {
  content: "▹ ";
  color: var(--cyan);
}

.trust-item p {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.02em;
  line-height: 1.8;
}

/* ============ 合作流程 ============ */

.steps {
  display: flex;
  align-items: stretch;
  gap: 14px;
}

.step {
  flex: 1;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-solid);
  padding: 30px 26px;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.step:hover {
  transform: translateY(-5px);
  border-color: var(--line-strong);
  box-shadow: 0 16px 44px rgba(2, 8, 20, 0.6);
}

.step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--blue), var(--purple));
  opacity: 0.75;
}

.step-num {
  font-family: var(--mono);
  font-size: 30px;
  font-weight: 600;
  background: linear-gradient(180deg, #fff, rgba(34, 211, 238, 0.65));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block;
  margin-bottom: 14px;
}

.step h4 { font-size: 17px; font-weight: 600; margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--muted); line-height: 1.75; }

.step-arrow {
  display: grid;
  place-items: center;
  flex: none;
  color: var(--muted-dim);
  animation: arrowNudge 2.4s ease-in-out infinite;
}

@keyframes arrowNudge {
  0%, 100% { transform: translateX(0); opacity: 0.5; }
  50% { transform: translateX(5px); opacity: 1; }
}

/* ============ 合作入口 ============ */

.section-contact {
  background:
    radial-gradient(800px 320px at 50% 100%, rgba(34, 211, 238, 0.08), transparent),
    var(--bg-alt);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 28px;
  align-items: start;
}

.contact-form {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-solid);
  padding: 34px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-field label {
  font-size: 13.5px;
  color: var(--muted);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.form-field input,
.form-field textarea {
  background: rgba(4, 7, 15, 0.7);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 16px;
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
  resize: vertical;
}

.form-field input::placeholder,
.form-field textarea::placeholder { color: var(--muted-dim); }

.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.12);
  background: rgba(4, 7, 15, 0.9);
}

.form-note {
  font-size: 13px;
  color: var(--muted-dim);
  text-align: center;
}

.contact-aside {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.contact-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-solid);
  padding: 28px 26px;
}

.contact-card h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.contact-card h4::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.contact-line {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 14px;
}

.contact-line:last-child { border-bottom: none; }

.ci {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  flex: none;
}

.contact-card-glow {
  border-color: rgba(34, 211, 238, 0.28);
  background: linear-gradient(160deg, rgba(34, 211, 238, 0.07), var(--panel-solid) 55%);
}

.contact-want li {
  padding: 9px 0 9px 24px;
  position: relative;
  font-size: 14px;
  color: var(--muted);
}

.contact-want li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 17px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  border: 1.5px solid var(--cyan);
}

/* ============ Footer ============ */

.footer {
  border-top: 1px solid var(--line);
  padding: 46px 0 40px;
  background: var(--bg);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  text-align: center;
}

.footer-slogan {
  font-size: 14px;
  color: var(--muted);
}

.footer-copy {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted-dim);
  letter-spacing: 0.04em;
}

/* ============ 响应式 ============ */

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-5 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .flywheel-layout { grid-template-columns: 1fr; gap: 40px; }
  .flywheel-visual { order: 2; }
  .steps { flex-wrap: wrap; }
  .step { flex: 1 1 44%; }
  .step-arrow { display: none; }
  .contact-layout { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 80px 0; }
  .nav-links {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(4, 7, 15, 0.97);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    padding: 10px 24px 20px;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s ease;
  }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 13px 0; border-bottom: 1px dashed var(--line); }
  .nav-links a::after { display: none; }
  .nav-toggle { display: flex; }
  .nav-actions .btn-primary { display: none; }
  .hero { padding-top: 120px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 26px 12px; }
  .stat:nth-child(3) { border-left: none; }
  .split { grid-template-columns: 1fr; }
  .panel-link { padding: 4px 0; }
  .grid-3 { grid-template-columns: 1fr; }
  .step { flex: 1 1 100%; }
  .form-row { grid-template-columns: 1fr; }
  .compare-table { font-size: 13.5px; }
  .compare-table th, .compare-table td { padding: 13px 14px; }
}

/* ============ 动效降级 ============ */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html.js .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}