/* ===== 使用声明页 · page-disclaimer ===== */
.page-disclaimer {
  --disc-num-col: 84px;
  --disc-hairline: var(--gray-300);
  --disc-pad: clamp(20px, 2.4vw, 30px);
  overflow-x: hidden;
}

/* ---------- 页头 ---------- */
.page-disclaimer .notice-top {
  padding: clamp(96px, 12vw, 140px) 0 0;
}

.page-disclaimer .notice-top__main {
  display: grid;
  gap: 32px;
  margin-top: 28px;
}

.page-disclaimer .notice-top__lead {
  max-width: 62ch;
}

.page-disclaimer .notice-top__lead h1 {
  margin: 18px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.2rem, 5.4vw, 3.6rem);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-disclaimer .notice-top__lead h1::after {
  content: "";
  display: block;
  width: 64px;
  height: 4px;
  margin-top: 20px;
  background: var(--ink-900);
}

.page-disclaimer .notice-top__lead p {
  margin: 20px 0 0;
  font-size: var(--fs-body);
  line-height: 1.8;
  color: var(--gray-500);
}

.page-disclaimer .notice-facts {
  margin: 0;
  border-top: 1px solid var(--disc-hairline);
}

.page-disclaimer .notice-facts__row {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--disc-hairline);
}

.page-disclaimer .notice-facts dt {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.06em;
  color: var(--gray-500);
}

.page-disclaimer .notice-facts dd {
  margin: 0;
  font-size: var(--fs-small);
  color: var(--ink-900);
}

.page-disclaimer .notice-banner {
  margin: 36px 0 0;
  overflow: hidden;
  border: 1px solid var(--disc-hairline);
  border-radius: var(--radius-m);
  background: var(--gray-100);
  aspect-ratio: 1200 / 420;
}

.page-disclaimer .notice-banner img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 条款刻度带 ---------- */
.page-disclaimer .notice-scale {
  position: sticky;
  top: 78px;
  z-index: 30;
  margin-top: 32px;
  border-top: 1px solid var(--disc-hairline);
  border-bottom: 1px solid var(--disc-hairline);
  background: rgba(251, 250, 247, 0.94);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.page-disclaimer .notice-scale__inner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-disclaimer .notice-scale__inner::-webkit-scrollbar {
  display: none;
}

.page-disclaimer .notice-scale__label {
  flex: 0 0 auto;
  padding-right: 14px;
  border-right: 1px solid var(--disc-hairline);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.14em;
  color: var(--gray-500);
}

.page-disclaimer .notice-scale__list {
  display: flex;
  flex: 0 0 auto;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .notice-scale__list a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border: 1px solid var(--disc-hairline);
  border-radius: var(--radius-pill);
  font-size: var(--fs-small);
  color: var(--gray-500);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease),
    background var(--t-fast) var(--ease);
}

.page-disclaimer .notice-scale__list a:hover,
.page-disclaimer .notice-scale__list a:focus-visible {
  border-color: var(--signal);
  background: rgba(255, 90, 31, 0.08);
  color: var(--ink-900);
}

.page-disclaimer .notice-scale__num {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.04em;
  color: var(--signal);
}

/* ---------- 条款台账 ---------- */
.page-disclaimer .clause-stack {
  margin: 40px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--disc-hairline);
}

.page-disclaimer .clause {
  display: grid;
  grid-template-columns: var(--disc-num-col) minmax(0, 1fr);
  border-bottom: 1px solid var(--disc-hairline);
}

.page-disclaimer .clause__num {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 30px 10px 0;
  background: var(--gray-100);
  border-right: 1px solid var(--disc-hairline);
  font-family: var(--font-mono);
  font-size: 1.5rem;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--ink-700);
}

.page-disclaimer .clause__box > summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: var(--disc-pad) clamp(18px, 2.6vw, 32px);
  cursor: pointer;
  transition: background var(--t-fast) var(--ease);
}

.page-disclaimer .clause__box > summary::-webkit-details-marker {
  display: none;
}

.page-disclaimer .clause__box > summary:hover {
  background: rgba(11, 12, 14, 0.035);
}

.page-disclaimer .clause__box > summary:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: -2px;
}

.page-disclaimer .clause__title {
  font-family: var(--font-sans);
  font-size: var(--fs-h3);
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink-900);
}

.page-disclaimer .clause__indicator {
  position: relative;
  flex: 0 0 auto;
  width: 24px;
  height: 24px;
  border: 1px solid var(--disc-hairline);
  border-radius: 50%;
  background: var(--paper);
  transition: border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-disclaimer .clause__indicator::before,
.page-disclaimer .clause__indicator::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 10px;
  height: 1.5px;
  background: var(--gray-500);
  transition: transform var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-disclaimer .clause__indicator::before {
  transform: translate(-50%, -50%);
}

.page-disclaimer .clause__indicator::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-disclaimer .clause__box[open] .clause__indicator {
  border-color: var(--signal);
  background: rgba(255, 90, 31, 0.12);
}

.page-disclaimer .clause__box[open] .clause__indicator::before,
.page-disclaimer .clause__box[open] .clause__indicator::after {
  background: var(--signal);
}

.page-disclaimer .clause__box[open] .clause__indicator::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.page-disclaimer .clause__body {
  max-width: 62ch;
  padding: 0 clamp(18px, 2.6vw, 32px) calc(var(--disc-pad) + 6px);
}

.page-disclaimer .clause__body p {
  margin: 0 0 18px;
  font-size: var(--fs-body);
  line-height: 1.8;
  color: var(--gray-500);
}

.page-disclaimer .clause__body a {
  color: var(--volt);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-disclaimer .clause__body a:hover {
  color: var(--signal);
}

.page-disclaimer .clause__list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .clause__list li {
  position: relative;
  padding-left: 22px;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--gray-500);
}

.page-disclaimer .clause__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 10px;
  height: 2px;
  background: var(--signal);
}

.page-disclaimer .clause-back {
  margin: 26px 0 0;
  text-align: right;
}

.page-disclaimer .clause-back a {
  display: inline-block;
  padding-bottom: 2px;
  border-bottom: 1px dashed var(--disc-hairline);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.06em;
  color: var(--gray-500);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-disclaimer .clause-back a:hover,
.page-disclaimer .clause-back a:focus-visible {
  border-color: var(--signal);
  color: var(--signal);
}

/* ---------- 底部帮助 ---------- */
.page-disclaimer .notice-help {
  margin-top: 72px;
  padding: clamp(40px, 5vw, 64px) 0;
  background: var(--ink-900);
}

.page-disclaimer .notice-help__inner {
  display: grid;
  gap: 28px;
}

.page-disclaimer .notice-help h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-h2);
  line-height: 1.15;
  color: var(--paper);
}

.page-disclaimer .notice-help p {
  margin: 0;
  max-width: 46ch;
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--gray-300);
}

.page-disclaimer .notice-help__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-disclaimer .notice-help .btn-outline {
  color: var(--paper);
  border-color: rgba(251, 250, 247, 0.32);
  background: transparent;
}

.page-disclaimer .notice-help .btn-outline:hover,
.page-disclaimer .notice-help .btn-outline:focus-visible {
  border-color: var(--paper);
  background: rgba(251, 250, 247, 0.1);
}

/* ---------- 响应式 ---------- */
@media (min-width: 860px) {
  .page-disclaimer .notice-top__main {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 64px);
    align-items: start;
  }

  .page-disclaimer .notice-help__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (max-width: 760px) {
  .page-disclaimer .notice-scale {
    top: 68px;
  }

  .page-disclaimer .clause {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-disclaimer .clause__num {
    justify-content: flex-start;
    align-items: center;
    padding: 18px 18px 0;
    background: transparent;
    border-right: none;
    font-size: 0.9375rem;
    letter-spacing: 0.1em;
    color: var(--signal);
  }

  .page-disclaimer .clause__box > summary {
    padding: 10px 18px 20px;
  }

  .page-disclaimer .clause__body {
    padding: 0 18px 24px;
  }

  .page-disclaimer .notice-banner {
    margin-top: 28px;
    aspect-ratio: 16 / 9;
  }

  .page-disclaimer .clause-back {
    text-align: left;
  }
}

@media (max-width: 420px) {
  .page-disclaimer .notice-facts__row {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .page-disclaimer .notice-help__links .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer * {
    transition-duration: 1ms !important;
  }
}