/* ===== 使用说明 · 页面作用域 page-disclaimer ===== */

.page-disclaimer {
  --disc-shadow: 0 26px 46px -30px rgba(0, 0, 0, .95);
  --disc-diag: rgba(76, 175, 109, .42);
  background: var(--bg);
  color: var(--fg);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */

.page-disclaimer .dis-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(2.25rem, 6vw, 4rem) 0 clamp(2.5rem, 6vw, 4rem);
  background: linear-gradient(180deg, var(--bg-sunken) 0%, var(--bg) 82%);
}

.page-disclaimer .dis-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--rule) 1px, transparent 1px),
    linear-gradient(to bottom, var(--rule) 1px, transparent 1px);
  background-size: 76px 76px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
}

.page-disclaimer .breadcrumb {
  margin-bottom: clamp(1.75rem, 4vw, 3rem);
}

.page-disclaimer .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .55rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .05em;
  color: var(--fg-faint);
}

.page-disclaimer .breadcrumb a {
  color: var(--fg-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}

.page-disclaimer .breadcrumb a:hover {
  color: var(--pitch-bright);
  border-bottom-color: var(--pitch-bright);
}

.page-disclaimer .dis-title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(3rem, 11vw, 6.5rem);
  line-height: .92;
  letter-spacing: -.015em;
  margin: .18em 0 .34em;
  color: var(--fg);
}

.page-disclaimer .dis-lede {
  max-width: 54ch;
  margin: 0;
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  line-height: 1.85;
  color: var(--fg-muted);
}

.page-disclaimer .dis-banner {
  position: relative;
  margin: clamp(2rem, 5vw, 3.25rem) 0 0;
  overflow: hidden;
  background: var(--bg-raised);
  clip-path: polygon(0 0, calc(100% - clamp(24px, 4vw, 56px)) 0, 100% clamp(24px, 4vw, 56px), 100% 100%, 0 100%);
}

.page-disclaimer .dis-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2.6 / 1;
  object-fit: cover;
  opacity: .9;
}

/* ---------- 条款章节 ---------- */

.page-disclaimer .dis-terms {
  padding: clamp(3rem, 8vw, 6rem) 0 clamp(3.5rem, 9vw, 6.5rem);
  background: var(--bg);
}

.page-disclaimer .dis-terms .section-title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.9rem, 5.5vw, 3.1rem);
  line-height: 1.04;
  letter-spacing: -.01em;
  margin: .3em 0 .7rem;
}

.page-disclaimer .clause-list {
  list-style: none;
  margin: clamp(2rem, 5vw, 3.5rem) 0 0;
  padding: 0;
  display: grid;
  gap: clamp(.85rem, 2vw, 1.25rem);
}

.page-disclaimer .clause {
  position: relative;
  display: grid;
  gap: .35rem;
  padding: clamp(1.4rem, 4vw, 2.4rem) clamp(1.15rem, 3vw, 2.4rem);
  background: var(--bg-raised);
  transition: transform .32s cubic-bezier(.2, .7, .3, 1),
              background-color .32s ease,
              box-shadow .32s ease;
}

.page-disclaimer .clause::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--pitch-bright), rgba(76, 175, 109, .12));
  opacity: .75;
  transition: opacity .32s ease;
  pointer-events: none;
}

.page-disclaimer .clause::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: clamp(20px, 3vw, 32px);
  height: clamp(20px, 3vw, 32px);
  background: var(--bg);
  clip-path: polygon(0 0, 100% 0, 100% 100%);
  pointer-events: none;
}

.page-disclaimer .clause:hover,
.page-disclaimer .clause:focus-within {
  background: var(--bg-raised);
  transform: translateY(-4px);
  box-shadow: var(--disc-shadow);
}

.page-disclaimer .clause:hover::before,
.page-disclaimer .clause:focus-within::before {
  opacity: 1;
}

.page-disclaimer .clause__index {
  display: flex;
  align-items: baseline;
}

.page-disclaimer .clause__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 5vw, 2.4rem);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--amber);
  transform-origin: left center;
  transition: transform .34s cubic-bezier(.2, .7, .3, 1), color .34s ease;
}

.page-disclaimer .clause:hover .clause__num,
.page-disclaimer .clause:focus-within .clause__num {
  color: var(--pitch-bright);
  transform: scale(1.18);
}

.page-disclaimer .clause__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.3rem, 3.6vw, 1.72rem);
  line-height: 1.24;
  letter-spacing: .005em;
  margin: 0 0 .7rem;
  color: var(--fg);
}

.page-disclaimer .clause__text {
  max-width: 64ch;
  margin: 0 0 .9rem;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--fg-muted);
}

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

.page-disclaimer .clause__text a {
  color: var(--pitch-bright);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color .2s ease;
}

.page-disclaimer .clause__text a:hover {
  color: var(--amber);
}

.page-disclaimer .kbd-term {
  font-family: var(--font-mono);
  font-size: .92em;
  color: var(--amber);
  border-bottom: 1px dashed rgba(242, 169, 59, .55);
}

.page-disclaimer a:focus-visible,
.page-disclaimer .btn:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

/* ---------- 结尾区块 ---------- */

.page-disclaimer .dis-outro {
  position: relative;
  isolation: isolate;
  padding: clamp(3rem, 8vw, 5.5rem) 0 clamp(3.5rem, 9vw, 6rem);
  background: var(--bg-sunken);
  border-top: 1px solid var(--rule);
  overflow: hidden;
}

.page-disclaimer .dis-outro::before {
  content: "";
  position: absolute;
  top: 46%;
  left: -12%;
  width: 124%;
  height: 1px;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, var(--pitch-bright), var(--amber), transparent);
  transform: rotate(-3.4deg);
  opacity: .32;
}

.page-disclaimer .dis-outro::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 170px;
  z-index: -1;
  pointer-events: none;
  background-image: linear-gradient(to right, var(--rule) 1px, transparent 1px);
  background-size: 76px 100%;
  -webkit-mask-image: linear-gradient(0deg, #000, transparent);
  mask-image: linear-gradient(0deg, #000, transparent);
}

.page-disclaimer .dis-outro .section-title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.85rem, 5.4vw, 2.9rem);
  line-height: 1.06;
  letter-spacing: -.01em;
  margin: .3em 0 .8rem;
}

.page-disclaimer .dis-outro .prose {
  max-width: 58ch;
  color: var(--fg-muted);
  line-height: 1.85;
}

.page-disclaimer .dis-outro__links {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0;
}

/* ---------- 断点 ---------- */

@media (min-width: 880px) {
  .page-disclaimer .clause {
    grid-template-columns: 148px 1fr;
    column-gap: clamp(1.5rem, 4vw, 3rem);
    align-items: start;
  }

  .page-disclaimer .clause__index {
    justify-content: flex-start;
  }
}

@media (max-width: 560px) {
  .page-disclaimer .dis-banner {
    clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
  }

  .page-disclaimer .dis-banner img {
    aspect-ratio: 16 / 9;
  }

  .page-disclaimer .dis-outro__links .btn {
    flex: 1 1 100%;
    justify-content: center;
  }
}