/* ============ 使用协议页 · 页面专属样式 ============ */
.page-disclaimer {
  --dsc-on-paper: #26344B;
  --dsc-on-paper-soft: #5A6E8C;
  --dsc-card-line: rgba(36, 80, 155, .22);
  --dsc-grid-line: rgba(36, 80, 155, .30);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-disclaimer .dsc-hero {
  position: relative;
  overflow: hidden;
  padding: var(--s-2) 0 var(--s-1);
  background: var(--ink-900);
}

.page-disclaimer .dsc-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--dsc-grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--dsc-grid-line) 1px, transparent 1px);
  background-size: 58px 58px;
  opacity: .38;
  pointer-events: none;
}

.page-disclaimer .dsc-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  top: -34%;
  width: min(640px, 92vw);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 84, 42, .26), rgba(232, 84, 42, 0) 68%);
  pointer-events: none;
}

.page-disclaimer .dsc-hero .wrap {
  position: relative;
  z-index: 1;
}

.page-disclaimer .dsc-hero__grid {
  display: grid;
  gap: var(--s-2);
  margin-top: var(--s-1);
}

.page-disclaimer .dsc-hero__lead {
  max-width: 64ch;
}

.page-disclaimer .dsc-hero .eyebrow {
  color: var(--accent-hi);
}

.page-disclaimer .dsc-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 7vw, 56px);
  line-height: 1.05;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-disclaimer .dsc-hero__lead .lede {
  margin: 16px 0 0;
  font-size: 17px;
  line-height: 1.75;
  color: var(--text-body);
}

.page-disclaimer .dsc-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .dsc-hero__chips .chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 13px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-soft);
  background: rgba(22, 57, 111, .55);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--text-body);
}

.page-disclaimer .dsc-hero__chips .chip--state {
  color: var(--state);
  border-color: rgba(34, 211, 208, .45);
}

.page-disclaimer .dsc-hero__art {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg) var(--r-md) var(--r-md) var(--r-lg);
  background: var(--ink-800);
}

.page-disclaimer .dsc-hero__art img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.page-disclaimer .dsc-hero__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(118deg, rgba(7, 22, 51, .68), rgba(7, 22, 51, 0) 58%);
  pointer-events: none;
}

.page-disclaimer .dsc-hero__cap {
  position: absolute;
  left: 16px;
  bottom: 12px;
  margin: 0;
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--muted);
}

/* ---------- 速览条 ---------- */
.page-disclaimer .dsc-brief {
  padding: var(--s-1) 0;
  background: var(--ink-800);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-disclaimer .dsc-brief .eyebrow {
  color: var(--state);
}

.page-disclaimer .dsc-brief__title {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 4.4vw, 28px);
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-disclaimer .dsc-brief__list {
  display: grid;
  gap: 0;
  margin: var(--s-1) 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .dsc-brief__item {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-body);
}

.page-disclaimer .dsc-brief__item:last-child {
  border-bottom: 0;
}

.page-disclaimer .dsc-brief__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--accent-hi);
}

/* ---------- 条款区（浅色阅读底） ---------- */
.page-disclaimer .dsc-terms {
  padding: var(--s-2) 0 var(--s-3);
  background: var(--paper);
  color: var(--text-dark);
}

.page-disclaimer .dsc-terms__eyebrow {
  color: var(--accent);
}

.page-disclaimer .dsc-terms__title {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(24px, 4.6vw, 32px);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--text-dark);
}

.page-disclaimer .dsc-terms__sub {
  max-width: 58ch;
  margin: 12px 0 var(--s-2);
  font-size: 15px;
  line-height: 1.75;
  color: var(--dsc-on-paper-soft);
}

.page-disclaimer .dsc-doc {
  display: grid;
  gap: var(--s-2);
}

/* 目录 */
.page-disclaimer .dsc-toc__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--dsc-on-paper-soft);
}

.page-disclaimer .dsc-toc__list {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .dsc-toc__link {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 8px 10px;
  border-left: 2px solid transparent;
  border-radius: 0 var(--r-md) var(--r-md) 0;
  font-size: 14px;
  line-height: 1.5;
  color: #3B4E6B;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-disclaimer .dsc-toc__link:hover,
.page-disclaimer .dsc-toc__link:focus-visible,
.page-disclaimer .dsc-toc__link[aria-current="true"] {
  border-left-color: var(--accent);
  background: rgba(232, 84, 42, .07);
  color: var(--text-dark);
}

.page-disclaimer .dsc-toc__idx {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--accent);
}

/* 折叠条款 */
.page-disclaimer .term {
  margin-bottom: 14px;
  border: 1px solid var(--dsc-card-line);
  border-radius: var(--r-md);
  background: #FFFFFF;
  overflow: hidden;
  transition: border-color var(--dur) var(--ease);
}

.page-disclaimer .term:last-child {
  margin-bottom: 0;
}

.page-disclaimer .term[open],
.page-disclaimer .term:hover {
  border-color: rgba(232, 84, 42, .42);
}

.page-disclaimer .term__head {
  position: relative;
  display: flex;
  gap: 14px;
  align-items: center;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

.page-disclaimer .term__head::-webkit-details-marker {
  display: none;
}

.page-disclaimer .term__head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 260ms var(--ease);
}

.page-disclaimer .term[open] > .term__head::before {
  transform: scaleY(1);
}

.page-disclaimer .term__head:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.page-disclaimer .term__idx {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .05em;
  color: var(--accent);
}

.page-disclaimer .term__title {
  flex: 1 1 auto;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-dark);
}

.page-disclaimer .term__sign {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
}

.page-disclaimer .term__sign::before,
.page-disclaimer .term__sign::after {
  content: "";
  position: absolute;
  background: var(--ink-700);
  border-radius: 2px;
  transition: transform 260ms var(--ease), opacity 260ms var(--ease);
}

.page-disclaimer .term__sign::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-disclaimer .term__sign::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}

.page-disclaimer .term[open] .term__sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-disclaimer .term__body {
  padding: 0 18px 20px;
}

.page-disclaimer .term__body p {
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--dsc-on-paper);
}

.page-disclaimer .term__body p:last-child {
  margin-bottom: 0;
}

.page-disclaimer .term__body .mono {
  font-family: var(--font-mono);
  font-size: .94em;
  letter-spacing: .01em;
  color: var(--ink-700);
  padding: 1px 3px;
  border-radius: 4px;
  background: rgba(36, 80, 155, .09);
}

.page-disclaimer .term__list {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .term__list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--dsc-on-paper);
}

.page-disclaimer .term__list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* ---------- 延伸链接条 ---------- */
.page-disclaimer .dsc-next {
  padding: var(--s-2) 0;
  background: var(--ink-900);
  border-top: 1px solid var(--line-soft);
}

.page-disclaimer .dsc-next__label {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--muted);
}

.page-disclaimer .dsc-next__list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 30px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .dsc-next__link {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  align-items: baseline;
  padding-bottom: 5px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-body);
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-disclaimer .dsc-next__link:hover,
.page-disclaimer .dsc-next__link:focus-visible {
  color: var(--white);
  border-bottom-color: var(--accent);
}

.page-disclaimer .dsc-next__desc {
  font-size: 13px;
  font-weight: 400;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-disclaimer .dsc-brief__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--s-2);
  }

  .page-disclaimer .dsc-brief__item:nth-last-child(-n+2) {
    border-bottom: 0;
  }
}

@media (min-width: 900px) {
  .page-disclaimer .dsc-hero {
    padding: var(--s-3) 0 var(--s-2);
  }

  .page-disclaimer .dsc-hero__art img {
    aspect-ratio: 10 / 3;
  }

  .page-disclaimer .dsc-doc {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: var(--s-3);
    align-items: start;
  }

  .page-disclaimer .dsc-aside {
    position: sticky;
    top: calc(var(--bar-h) + 20px);
  }

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

  .page-disclaimer .term__body {
    padding: 0 24px 24px 47px;
  }
}

@media (min-width: 1040px) {
  .page-disclaimer .dsc-terms {
    padding-top: var(--s-3);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .term__head::before,
  .page-disclaimer .term__sign::before,
  .page-disclaimer .term__sign::after,
  .page-disclaimer .dsc-toc__link,
  .page-disclaimer .dsc-next__link {
    transition: none;
  }
}