* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  background:
    radial-gradient(circle at 50% 18%, rgba(122, 18, 24, 0.38), transparent 30%),
    linear-gradient(180deg, #050505 0%, #130d0d 50%, #020202 100%);
  color: #f4efe7;
}

.app {
  width: 100%;
  max-width: 430px;
  min-height: 100vh;
  margin: 0 auto;
  padding: 42px 26px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.screen {
  display: none;
  width: 100%;
}

.screen.active {
  display: block;
}

.meta,
.question-top {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  letter-spacing: 2px;
  color: rgba(244,239,231,0.48);
  margin-bottom: 42px;
}

h1 {
  font-size: 50px;
  line-height: 1;
  margin: 0 0 26px;
}

.subtitle {
  font-size: 14px;
  line-height: 1.9;
  color: rgba(244,239,231,0.72);
  margin-bottom: 34px;
}

.btn {
  width: 100%;
  height: 54px;
  border: none;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 3px;
  cursor: pointer;
}

.btn.light {
  background: #f4efe7;
  color: #111;
}

.btn.red {
  background: #9b1d24;
  color: #f4efe7;
}

.file-title {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 8px;
}

.file-subtitle {
  font-size: 12px;
  letter-spacing: 4px;
  color: rgba(244,239,231,0.42);
  margin-bottom: 36px;
}

.file-list {
  border-top: 1px solid rgba(244,239,231,0.16);
  margin-bottom: 34px;
}

.file-list div {
  display: flex;
  justify-content: space-between;
  padding: 16px 0;
  border-bottom: 1px solid rgba(244,239,231,0.16);
  font-size: 13px;
}

.file-list span {
  color: rgba(244,239,231,0.48);
}

.progress {
  width: 100%;
  height: 2px;
  background: rgba(244,239,231,0.14);
  margin-bottom: 44px;
}

#progressBar {
  height: 2px;
  width: 0%;
  background: #b31b28;
}

#questionText {
  font-size: 26px;
  line-height: 1.55;
  margin: 0 0 34px;
}

.options {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.option {
  width: 100%;
  padding: 16px;
  border: 1px solid rgba(244,239,231,0.18);
  background: rgba(0,0,0,0.2);
  color: rgba(244,239,231,0.84);
  text-align: left;
  border-radius: 6px;
  font-size: 14px;
  line-height: 1.5;
}

.option:active {
  border-color: #b31b28;
  transform: scale(0.99);
}

.result-label {
  font-size: 13px;
  letter-spacing: 4px;
  color: rgba(244,239,231,0.48);
  margin-bottom: 18px;
}

#resultName {
  font-size: 46px;
  margin: 0 0 24px;
}

.result-desc {
  font-size: 15px;
  line-height: 2;
  color: rgba(244,239,231,0.76);
  margin-bottom: 36px;
}