/* 首屏精修：仅调整视觉质感，不改变页面结构与地图交互 */
.hero {
  position: relative;
  overflow: hidden;
  padding: 34px 0 86px;
  isolation: isolate;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -20% -10% 0;
  z-index: -2;
  background:
    radial-gradient(circle at 76% 38%, rgba(65, 184, 195, .09), transparent 28%),
    radial-gradient(circle at 18% 30%, rgba(88, 116, 181, .055), transparent 30%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: min(1180px, calc(100% - 40px));
  height: 1px;
  transform: translateX(-50%);
  background: linear-gradient(90deg, transparent, rgba(138, 172, 206, .16), transparent);
}

.hero-card {
  min-height: 680px;
  padding-top: 18px;
  padding-bottom: 18px;
}

.hero-copy {
  padding-left: 22px;
}

.hero-copy::after {
  inset: -100px -260px -100px -70px;
  background: linear-gradient(90deg, #070b14 38%, rgba(7, 11, 20, .93) 57%, rgba(7, 11, 20, .48) 76%, transparent 96%);
}

.tag {
  padding: 7px 12px;
  border-color: rgba(115, 240, 216, .28);
  background: rgba(115, 240, 216, .035);
  color: #8ce8d6;
  font-size: 11px;
  font-weight: 650;
  letter-spacing: .18em;
}

.hero h1 {
  max-width: 650px;
  margin: 27px 0 20px;
  font-size: clamp(48px, 5.25vw, 76px);
  font-weight: 850;
  line-height: .99;
  letter-spacing: -.055em;
  text-wrap: balance;
}

.hero h1 span {
  margin-top: 8px;
  background: linear-gradient(96deg, #91efde 2%, #70d9df 43%, #8caee8 92%);
  background-clip: text;
  -webkit-background-clip: text;
}

.hero p {
  max-width: 545px;
  margin: 0;
  color: #92a1b8;
  font-size: 15px;
  line-height: 1.9;
  letter-spacing: .01em;
}

.hero-map-summary {
  margin-top: 22px;
  padding: 9px 13px;
  border-left-color: rgba(115, 240, 216, .72);
  background: linear-gradient(90deg, rgba(115, 240, 216, .065), transparent 92%);
  color: #aebdd1;
}

.hero-map-summary i {
  width: 6px;
  height: 6px;
  box-shadow: 0 0 12px rgba(115, 240, 216, .8);
}

.actions {
  gap: 10px;
  margin: 30px 0 0;
}

.actions .btn {
  padding: 12px 21px;
  border-color: rgba(171, 193, 222, .18);
  background: rgba(255, 255, 255, .018);
  color: #c8d4e5;
  font-size: 14px;
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}

.actions .btn:hover {
  transform: translateY(-2px);
  border-color: rgba(115, 240, 216, .42);
  background: rgba(115, 240, 216, .045);
}

.actions .primary {
  border: 1px solid rgba(171, 255, 239, .5);
  background: linear-gradient(100deg, #82e7d4, #7db6dc);
  color: #071119;
  box-shadow: 0 10px 34px rgba(64, 177, 180, .13);
}

.proof {
  gap: 20px;
  max-width: 540px;
  margin-top: 38px;
}

.proof div {
  min-height: 66px;
  padding: 13px 0 0;
  border: 0;
  border-top: 1px solid rgba(155, 177, 207, .16);
  border-radius: 0;
  background: transparent;
}

.proof b {
  color: #e5edf8;
  font-size: 22px;
  font-weight: 760;
  letter-spacing: -.025em;
}

.proof small {
  display: block;
  margin-top: 3px;
  color: #6f8199;
  letter-spacing: .04em;
}

.map {
  background-image:
    linear-gradient(90deg, #070b14 0%, rgba(7, 11, 20, .76) 13%, transparent 36%),
    linear-gradient(180deg, rgba(7, 11, 20, .42), transparent 21%, transparent 76%, rgba(7, 11, 20, .58)),
    url('assets/china-project-map.png');
  filter: saturate(.86) contrast(.97);
}

.map::before {
  background:
    linear-gradient(90deg, rgba(7, 11, 20, .96), rgba(7, 11, 20, .42) 24%, transparent 46%),
    radial-gradient(circle at 70% 48%, transparent 0 36%, rgba(7, 11, 20, .1) 63%, rgba(7, 11, 20, .62) 100%);
}

.map-heading span {
  color: rgba(115, 240, 216, .66);
}

.map-heading b {
  color: #aebdd1;
  font-weight: 550;
}

@media (max-width: 1080px) {
  .hero { padding-top: 20px; }
  .hero-card { padding-top: 16px; }
  .hero-copy { padding-left: 18px; }
  .hero-copy::after {
    inset: -45px;
    background: linear-gradient(180deg, #070b14 73%, rgba(7, 11, 20, .78) 88%, transparent);
  }
}

@media (max-width: 620px) {
  .hero { padding: 18px 0 64px; }
  .hero h1 {
    margin-top: 22px;
    font-size: clamp(40px, 12vw, 54px);
    line-height: 1.02;
  }
  .proof { gap: 12px; margin-top: 30px; }
  .proof b { font-size: 18px; }
  .actions .btn { padding: 11px 17px; }
}