/* ============================================================
   ui.css — 年龄门 / 信标条 / Hero / 阶梯进度 / 订单摘要 / 吸底 CTA
   ============================================================ */

/* 年龄门显示时锁滚动 */
html.is-locked,
body.is-locked {
  overflow: hidden;
}

/* ---------------- 1. 年龄门 ---------------- */
.age-gate {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(6, 6, 10, 0.94);
  backdrop-filter: blur(6px);
}
.age-gate[hidden] { display: none; }

.age-gate__panel {
  width: min(100%, 460px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 22px;
  box-shadow: var(--shadow);
  text-align: center;
}
.age-gate__kicker {
  color: var(--brand);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.age-gate__title {
  font-size: 24px;
  line-height: 1.25;
  margin-bottom: 12px;
}
.age-gate__desc {
  color: var(--ink-dim);
  font-size: 14px;
  margin-bottom: 22px;
}
.age-gate__actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 14px;
}
.age-gate__fine {
  color: #7d7d8e;
  font-size: 12px;
  line-height: 1.5;
}

/* ---------------- 2. 信标条 ---------------- */
.beacon {
  background: #111119;
  border-bottom: 1px solid var(--line);
  padding-block: 9px;
  overflow: hidden;
}
.beacon__track {
  position: relative;
  height: 20px;
  max-width: var(--maxw);
  margin-inline: auto;
  text-align: center;
}
.beacon__msg {
  position: absolute;
  inset: 0;
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--ink-dim);
  opacity: 0;
  transition: opacity 0.45s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.beacon__msg.is-active { opacity: 1; }

/* ---------------- 3. Hero ---------------- */
.hero {
  display: grid;
  gap: 24px;
  padding-block: 24px 36px;
}
.hero__media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-soft);
  border: 1px solid var(--line);
}
.hero__img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.hero__badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--brand);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 6px 12px;
  border-radius: 999px;
}
.hero__eyebrow {
  color: var(--brand);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.hero__title {
  font-size: 27px;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}
.hero__sub {
  color: var(--ink-dim);
  font-size: 14.5px;
  margin-bottom: 18px;
}

/* 价格块 */
.price-block {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 10px;
  padding: 14px 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  margin-bottom: 18px;
}
.price-block__now {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
}
.price-block__unit {
  color: var(--ink-dim);
  font-size: 13px;
}
.price-block__bundle {
  flex: 1 1 100%;
  font-size: 13.5px;
  color: var(--ink-dim);
}
.price-block__bundle.is-on {
  color: var(--ok);
  font-weight: 600;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}
.hero__cta .btn { flex: 1 1 200px; }

.hero__points {
  display: grid;
  gap: 8px;
  font-size: 13.5px;
  color: var(--ink-dim);
}
.hero__points li {
  position: relative;
  padding-left: 22px;
}
.hero__points li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--ok);
  font-weight: 700;
}

/* ---------------- 4. 阶梯进度 ---------------- */
.tiers__head { margin-bottom: 18px; }
.tiers__title {
  font-size: 22px;
  line-height: 1.25;
  margin-bottom: 6px;
}
.tiers__note {
  color: var(--ink-dim);
  font-size: 13.5px;
}
.tiers__meter {
  position: relative;
  padding-top: 4px;
  margin-bottom: 12px;
}
.tiers__rail {
  height: 10px;
  border-radius: 999px;
  background: var(--panel-2);
  overflow: hidden;
}
.tiers__fill {
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, #ff3d71, #ffd166);
  transition: width 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.tiers__marks {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  margin-top: 10px;
  text-align: center;
}
.tiers__mark {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 8px 4px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--bg-soft);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}
.tiers__mark-qty {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
}
.tiers__mark-pct {
  font-size: 11.5px;
  font-style: normal;
  color: var(--ink-dim);
}
.tiers__mark.is-reached {
  border-color: rgba(61, 220, 151, 0.55);
  background: rgba(61, 220, 151, 0.1);
}
.tiers__mark.is-reached .tiers__mark-pct { color: var(--ok); }
.tiers__mark.is-next {
  border-color: rgba(255, 209, 102, 0.55);
}
.tiers__mark.is-next .tiers__mark-pct { color: var(--accent); }
.tiers__hint {
  font-size: 13.5px;
  color: var(--ink-dim);
}

/* ---------------- 订单摘要 ---------------- */
.summary__box {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 16px;
}
.summary__row--items {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}
.summary__empty { color: var(--ink-dim); font-size: 14px; }
.summary__chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 13px;
}
.summary__chip-qty {
  color: var(--brand);
  font-weight: 700;
}
.summary__list {
  display: grid;
  gap: 2px;
  margin-bottom: 14px;
}
.summary__line {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 7px 0;
  font-size: 14px;
  border-bottom: 1px solid rgba(44, 44, 58, 0.6);
}
.summary__line dt { color: var(--ink-dim); }
.summary__line dd {
  font-weight: 600;
  text-align: right;
  white-space: nowrap;
}
.summary__line.is-discount dd { color: var(--ok); }
.summary__line.is-muted dd { color: var(--ink-dim); font-weight: 500; }
.summary__line.is-total {
  border-bottom: 0;
  padding-top: 12px;
  font-size: 16px;
}
.summary__line.is-total dt { color: var(--ink); font-weight: 600; }
.summary__line.is-total dd { font-size: 20px; font-weight: 800; }
.summary__line.is-insurance {
  font-size: 12.5px;
  border-bottom: 0;
  padding-top: 2px;
}
.summary__warn {
  display: none;
  margin-bottom: 12px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  background: rgba(255, 61, 113, 0.12);
  border: 1px solid rgba(255, 61, 113, 0.4);
  color: #ffb3c7;
  font-size: 13px;
}
.summary__warn.is-on { display: block; }
.summary__fine {
  color: var(--ink-dim);
  font-size: 12px;
  line-height: 1.55;
  margin-top: 12px;
}
.btn.is-unavailable {
  opacity: 0.5;
  pointer-events: none;
}
.btn.is-busy {
  opacity: 0.8;
  pointer-events: none;
}

/* ---------------- 吸底 CTA ---------------- */
.sticky-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px calc(10px + env(safe-area-inset-bottom, 0px));
  background: rgba(17, 17, 25, 0.96);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--line);
  transform: translateY(110%);
  transition: transform 0.25s ease;
}
.sticky-cta.is-active { transform: translateY(0); }
.sticky-cta__info {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
  min-width: 0;
}
.sticky-cta__items {
  font-size: 12px;
  color: var(--ink-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sticky-cta__total {
  font-size: 17px;
  font-weight: 800;
}
.sticky-cta .btn {
  flex: 1 1 auto;
  max-width: 220px;
  margin-left: auto;
}

/* 吸底条激活时给页脚留出空间 */
body { padding-bottom: var(--sticky-h, 0px); }

/* ---------------- toast ---------------- */
.toast.is-out {
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

/* ---------------- 响应式 ---------------- */
@media (min-width: 768px) {
  .age-gate__actions { flex-direction: row; }
  .age-gate__actions .btn { flex: 1; }

  .hero {
    grid-template-columns: 1.05fr 1fr;
    align-items: center;
    gap: 36px;
    padding-block: 40px 56px;
  }
  .hero__title { font-size: 36px; }
  .hero__sub { font-size: 15.5px; }
  .price-block__now { font-size: 36px; }

  .tiers__marks { gap: 12px; }

  /* 桌面端用页脚 CTA 即可，隐藏吸底条 */
  .sticky-cta { display: none; }
  body { padding-bottom: 0; }
}

@media (min-width: 1024px) {
  .hero__title { font-size: 42px; }
}