/* ---------- Booking flow ---------- */
body.book { background: var(--gray-100); }

.bk-header {
  background: var(--white); border-bottom: 1px solid var(--gray-200);
  position: sticky; top: 0; z-index: 50;
}
.bk-header__inner {
  max-width: 720px; margin: 0 auto; padding: 12px 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.bk-header img { height: 56px; width: auto; }
.bk-header a.bk-call { font-family: var(--ff-display); font-weight: 600; font-size: 0.9rem; color: var(--blue-deep); white-space: nowrap; }

.bk-progress { height: 4px; background: var(--gray-200); }
.bk-progress__bar { height: 100%; width: 0; background: var(--blue); transition: width 0.35s ease; }

.bk-wrap { max-width: 720px; margin: 0 auto; padding: 26px 20px 80px; }

.bk-back {
  background: none; border: none; cursor: pointer; padding: 6px 0; margin-bottom: 10px;
  font-family: var(--ff-body); font-size: 0.92rem; color: var(--gray-500);
}
.bk-back:hover { color: var(--blue-deep); }
.bk-back[hidden] { display: none; }

.bk-summary {
  background: var(--navy); color: var(--white);
  border-radius: var(--radius-sm); padding: 14px 18px; margin-bottom: 22px;
  display: flex; align-items: baseline; justify-content: space-between; gap: 14px; flex-wrap: wrap;
}
.bk-summary__what { font-size: 0.92rem; }
.bk-summary__what .zh { color: rgba(255,255,255,0.6); }
.bk-summary__price { font-family: var(--ff-display); font-weight: 800; font-size: 1.3rem; color: var(--yellow); white-space: nowrap; }
.bk-summary[hidden] { display: none; }

.bk-step[hidden] { display: none; }
.bk-step h1 {
  font-size: clamp(1.5rem, 4.5vw, 2.05rem); font-weight: 800; color: var(--navy);
  margin-bottom: 6px; line-height: 1.2;
}
.bk-step h1 .zh { font-size: 0.55em; font-weight: 500; margin-top: 6px; }
.bk-step__hint { color: var(--gray-500); font-size: 0.94rem; margin-bottom: 22px; }

.bk-options { display: grid; gap: 12px; }
.bk-opt {
  display: flex; align-items: center; gap: 14px; width: 100%; text-align: left;
  background: var(--white); border: 2px solid var(--gray-200); border-radius: var(--radius);
  padding: 18px 20px; cursor: pointer; font-family: var(--ff-body);
  transition: border-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}
.bk-opt:hover { border-color: var(--blue); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.bk-opt.is-on { border-color: var(--blue-deep); background: var(--blue-pale); }
.bk-opt__body { flex: 1 1 auto; min-width: 0; }
.bk-opt__t { display: block; font-family: var(--ff-display); font-weight: 700; font-size: 1.02rem; color: var(--navy); }
.bk-opt__zh { display: block; font-family: var(--ff-zh); font-size: 0.86rem; color: var(--gray-500); margin-top: 2px; }
.bk-opt__note { display: block; font-size: 0.85rem; color: var(--gray-500); margin-top: 6px; line-height: 1.45; }
.bk-opt__price {
  flex: 0 0 auto; font-family: var(--ff-display); font-weight: 700;
  font-size: 1rem; color: var(--blue-deep); white-space: nowrap;
}
.bk-opt__tick {
  flex: 0 0 auto; width: 24px; height: 24px; border-radius: 6px;
  border: 2px solid var(--gray-200); display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem; color: transparent;
}
.bk-opt.is-on .bk-opt__tick { background: var(--blue-deep); border-color: var(--blue-deep); color: var(--white); }

.bk-actions { margin-top: 26px; display: flex; gap: 12px; flex-wrap: wrap; }

/* terminal / answer cards */
.bk-card {
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--radius); padding: 28px 26px; margin-bottom: 18px;
}
.bk-card h2 { font-size: 1.25rem; color: var(--navy); margin-bottom: 8px; }
.bk-card p { color: var(--gray-700); line-height: 1.6; font-size: 0.96rem; }
.bk-card .zh { color: var(--gray-500); }
.bk-tiers { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; margin: 18px 0 6px; }
.bk-tier { background: var(--gray-100); border-radius: var(--radius-sm); padding: 14px 10px; text-align: center; }
.bk-tier b { display: block; font-family: var(--ff-display); font-size: 0.82rem; color: var(--navy); letter-spacing: 0.05em; text-transform: uppercase; }
.bk-tier span { display: block; font-family: var(--ff-display); font-weight: 800; font-size: 1.2rem; color: var(--blue-deep); margin-top: 4px; }

.bk-facts { margin-top: 18px; display: flex; flex-direction: column; gap: 10px; }
.bk-fact { display: flex; gap: 10px; font-size: 0.93rem; color: var(--gray-700); }
.bk-fact b { color: var(--navy); font-family: var(--ff-display); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; min-width: 74px; }

/* form */
.bk-form { display: grid; gap: 14px; }
.bk-form input {
  width: 100%; padding: 15px 16px; border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm); font-family: var(--ff-body); font-size: 1rem; background: var(--white);
}
.bk-form input:focus { outline: 2px solid var(--blue); outline-offset: -1px; border-color: transparent; }
.bk-hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.bk-or { text-align: center; color: var(--gray-500); font-size: 0.86rem; margin: 22px 0 14px; }
.bk-direct { display: grid; gap: 10px; }
.bk-wa, .bk-wechat {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  padding: 15px 20px; border-radius: 999px; font-family: var(--ff-display); font-weight: 600; font-size: 0.97rem;
}
.bk-wa { background: #25D366; color: #fff; }
.bk-wa:hover { filter: brightness(0.94); }
.bk-wechat { background: var(--white); border: 2px solid var(--gray-200); color: var(--navy); }
.bk-wechat b { font-family: var(--ff-body); user-select: all; }

.bk-done { text-align: center; padding: 30px 0; }
.bk-done__mark { font-size: 2.6rem; }
.bk-done h2 { font-size: 1.5rem; color: var(--navy); margin: 10px 0 8px; }

.bk-note { font-size: 0.84rem; color: var(--gray-500); margin-top: 16px; text-align: center; }
.bk-note a { color: var(--blue-deep); font-weight: 600; }

@media (max-width: 560px) {
  .bk-tiers { grid-template-columns: 1fr; }
  .bk-opt { padding: 16px; gap: 12px; }
  .bk-summary { padding: 12px 14px; }
}