/* app: expectation bands — full-bleed stripes + inner cards, not circular path */
html {
  scroll-behavior: auto;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Noto Sans SC", "Microsoft YaHei UI", sans-serif;
  background: #ECEFF1;
  color: #37474F;
  line-height: 1.7;
}

.topbar {
  background: #37474F;
  color: #ECEFF1;
}

.topbar-box {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 16px 0 14px;
}

.topbar .name {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.topbar nav {
  margin-top: 10px;
}

.topbar nav ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(88px, 1fr));
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.topbar nav a {
  display: block;
  padding: 6px 4px;
  color: #ECEFF1;
  text-align: center;
  font-size: 0.82rem;
  text-decoration: none;
  border-bottom: 2px solid transparent;
}

.topbar nav a:hover {
  border-bottom-color: #FF7043;
}

.hero-slab {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 24px;
}

.hero-slab h1 {
  margin: 0 0 16px;
  font-size: 2rem;
  line-height: 1.3;
  color: #37474F;
}

.hero-slab p {
  margin: 0 0 10px;
  max-width: 40rem;
}

.band {
  padding: 36px 0 40px;
}

.band-in {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.band h2 {
  margin: 0 0 18px;
  font-size: 1.4rem;
}

.band-can {
  background: #2E7D32;
  color: #FFFFFF;
}

.band-mid {
  background: #FF7043;
  color: #3E2723;
}

.band-mid h2,
.band-mid h3 {
  color: #3E2723;
}

.band-no {
  background: #37474F;
  color: #ECEFF1;
}

.trio {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.trio article {
  padding: 16px 16px 14px;
  background: rgba(255, 255, 255, 0.14);
}

.band-mid .trio article {
  background: #FFF3E0;
}

.band-no .trio article {
  background: rgba(236, 239, 241, 0.08);
}

.trio svg {
  width: 30px;
  height: 30px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.7;
}

.trio h3 {
  margin: 10px 0 8px;
  font-size: 1.02rem;
}

.trio p {
  margin: 0;
  font-size: 0.94rem;
}

.plain {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 36px 0;
}

.plain h2 {
  margin: 0 0 14px;
  font-size: 1.4rem;
  color: #37474F;
}

.plain p {
  margin: 0 0 12px;
}

.degree {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  background: #FFFFFF;
}

.degree th,
.degree td {
  border: 1px solid #CFD8DC;
  padding: 11px 12px;
  text-align: left;
  vertical-align: top;
}

.degree thead th {
  background: #37474F;
  color: #FFFFFF;
}

.degree tbody th {
  width: 22%;
  background: #FFF3E0;
  font-weight: 600;
}

.twin {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin: 18px 0;
  border: 1px solid #CFD8DC;
}

.twin section {
  padding: 18px 20px;
  background: #FFFFFF;
}

.twin section + section {
  border-left: 1px solid #CFD8DC;
  background: #FFF3E0;
}

.twin h3 {
  margin: 0 0 10px;
  font-size: 1.05rem;
}

.twin p {
  margin: 0 0 10px;
}

.ladder {
  list-style: none;
  margin: 18px 0 8px;
  padding: 0;
  counter-reset: rung;
}

.ladder li {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 16px;
  margin: 0 0 12px;
  background: #FFFFFF;
  padding: 14px 16px;
}

.ladder li::before {
  counter-increment: rung;
  content: "步骤 " counter(rung);
  font-weight: 700;
  color: #FF7043;
  align-self: start;
}

.qna {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.qna article {
  padding: 16px 0;
  border-top: 1px dashed #B0BEC5;
}

.qna h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.qna p {
  margin: 0;
}

.foot {
  background: #37474F;
  color: #ECEFF1;
  padding: 26px 0 30px;
}

.foot-box {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.foot p {
  margin: 0 0 8px;
  font-size: 0.9rem;
}

@media (max-width: 800px) {
  .trio,
  .twin {
    grid-template-columns: 1fr;
  }

  .twin section + section {
    border-left: 0;
    border-top: 1px solid #CFD8DC;
  }

  .ladder li {
    grid-template-columns: 1fr;
  }
}