.page-disclaimer {
  --proto-accent: var(--indigo-600);
  --proto-edge: clamp(18px, 4vw, 34px);
  background-color: var(--paper-100);
  color: var(--paper-text);
}

/* ---------- 首屏 ---------- */
.page-disclaimer .proto-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(52px, 9vw, 104px) 0 clamp(38px, 6vw, 68px);
  background:
    radial-gradient(120% 110% at 84% 8%, rgba(47, 227, 224, 0.16), transparent 58%),
    var(--ink-950);
  color: var(--ink-text);
}

.page-disclaimer .proto-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
  filter: grayscale(0.35) contrast(1.15);
  pointer-events: none;
}

.page-disclaimer .proto-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(47, 227, 224, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(47, 227, 224, 0.07) 1px, transparent 1px);
  background-size: 72px 72px;
}

.page-disclaimer .proto-hero__inner {
  position: relative;
  z-index: 2;
}

.page-disclaimer .proto-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: rgba(232, 237, 247, 0.62);
}

.page-disclaimer .proto-crumb li {
  display: flex;
  align-items: center;
}

.page-disclaimer .proto-crumb li + li::before {
  content: "/";
  margin: 0 8px;
  color: rgba(47, 227, 224, 0.45);
}

.page-disclaimer .proto-crumb a {
  color: var(--cyan-400);
  text-decoration: none;
}

.page-disclaimer .proto-crumb a:hover,
.page-disclaimer .proto-crumb a:focus-visible {
  text-decoration: underline;
}

.page-disclaimer .proto-hero .eyebrow {
  color: var(--cyan-400);
  margin: 0;
}

.page-disclaimer .proto-hero h1 {
  margin: 14px 0 0;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-h1);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: #FFFFFF;
}

.page-disclaimer .proto-hero .lede {
  margin: 20px 0 0;
  max-width: 58ch;
  font-family: var(--font-editorial);
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  line-height: 1.85;
  color: rgba(232, 237, 247, 0.86);
}

/* ---------- 主体容器 ---------- */
.page-disclaimer .proto-body {
  padding: clamp(36px, 6vw, 72px) 0 clamp(56px, 8vw, 104px);
}

.page-disclaimer .proto-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 5vw, 56px);
  align-items: start;
}

/* ---------- 条款索引 ---------- */
.page-disclaimer .proto-toc {
  order: -1;
  padding: 16px 18px 18px;
  border-top: 2px solid var(--proto-accent);
  background: rgba(16, 26, 71, 0.045);
}

.page-disclaimer .proto-toc__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate-500);
}

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

.page-disclaimer .proto-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 7px 0;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--paper-text);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 160ms ease, border-color 160ms ease;
}

.page-disclaimer .proto-toc__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--slate-500);
  transition: color 160ms ease;
}

.page-disclaimer .proto-toc__list a:hover,
.page-disclaimer .proto-toc__list a:focus-visible {
  color: var(--proto-accent);
  border-bottom-color: var(--orange-500);
}

.page-disclaimer .proto-toc__list a:hover .proto-toc__num,
.page-disclaimer .proto-toc__list a:focus-visible .proto-toc__num {
  color: var(--orange-500);
}

.page-disclaimer .proto-toc__cross {
  display: grid;
  gap: 6px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line-paper);
}

.page-disclaimer .proto-toc__cross a {
  justify-self: start;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--proto-accent);
  text-decoration: none;
  border-bottom: 1px solid var(--paper-300);
  padding-bottom: 1px;
  transition: border-color 160ms ease;
}

.page-disclaimer .proto-toc__cross a:hover,
.page-disclaimer .proto-toc__cross a:focus-visible {
  border-bottom-color: var(--orange-500);
}

/* ---------- 条款正文 ---------- */
.page-disclaimer .proto-clause {
  position: relative;
  padding: clamp(26px, 5vw, 38px) 0;
  padding-left: var(--proto-edge);
  border-top: 1px solid var(--line-paper);
  scroll-margin-top: 120px;
}

.page-disclaimer .proto-clause::before {
  content: "";
  position: absolute;
  left: 0;
  top: clamp(26px, 5vw, 38px);
  bottom: clamp(26px, 5vw, 38px);
  width: 2px;
  background: var(--paper-300);
}

.page-disclaimer .proto-clause--key::before {
  width: 3px;
  background: var(--orange-500);
}

.page-disclaimer .proto-clause--data::before {
  width: 3px;
  background: var(--grass-500);
}

.page-disclaimer .proto-clause__num {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 1.65rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--slate-500);
}

.page-disclaimer .proto-clause--key .proto-clause__num {
  color: var(--orange-500);
}

.page-disclaimer .proto-clause--data .proto-clause__num {
  color: var(--grass-500);
}

.page-disclaimer .proto-clause__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-h3);
  line-height: 1.4;
  letter-spacing: -0.005em;
  color: var(--paper-text);
}

.page-disclaimer .proto-clause__text {
  margin-top: 12px;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--paper-text);
}

.page-disclaimer .proto-clause__text p + p {
  margin-top: 12px;
}

.page-disclaimer .proto-clause__text ul {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .proto-clause__text li {
  position: relative;
  margin-top: 8px;
  padding-left: 18px;
  line-height: 1.75;
}

.page-disclaimer .proto-clause__text li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 7px;
  height: 2px;
  background: var(--proto-accent);
}

.page-disclaimer .proto-clause__text .link-inline {
  color: var(--proto-accent);
  text-decoration: none;
  border-bottom: 1px solid var(--paper-300);
}

.page-disclaimer .proto-clause__text .link-inline:hover,
.page-disclaimer .proto-clause__text .link-inline:focus-visible {
  border-bottom-color: var(--orange-500);
}

/* ---------- 引用示例 ---------- */
.page-disclaimer .proto-cite {
  margin-top: 20px;
  padding: 16px 18px 18px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--paper-300);
  border-left: 3px solid var(--proto-accent);
}

.page-disclaimer .proto-cite__tag {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slate-500);
}

.page-disclaimer .proto-cite__line {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.8;
  color: var(--paper-text);
  overflow-wrap: anywhere;
}

/* ---------- 平板以上的条款网格 ---------- */
@media (min-width: 760px) {
  .page-disclaimer .proto-clause {
    display: grid;
    grid-template-columns: 76px minmax(0, 1fr);
    column-gap: clamp(12px, 2vw, 24px);
    padding-left: clamp(28px, 3.4vw, 44px);
  }

  .page-disclaimer .proto-clause__num {
    grid-column: 1;
    grid-row: 1 / span 2;
    margin: 0;
    font-size: clamp(2rem, 3.2vw, 2.6rem);
  }

  .page-disclaimer .proto-clause__title {
    grid-column: 2;
    grid-row: 1;
  }

  .page-disclaimer .proto-clause__text {
    grid-column: 2;
    grid-row: 2;
    margin-top: 12px;
  }
}

/* ---------- 桌面端双栏 ---------- */
@media (min-width: 960px) {
  .page-disclaimer .proto-layout {
    grid-template-columns: minmax(0, 1fr) 248px;
    gap: clamp(36px, 5vw, 72px);
  }

  .page-disclaimer .proto-toc {
    order: 0;
    position: sticky;
    top: 112px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .proto-toc__list a,
  .page-disclaimer .proto-toc__num,
  .page-disclaimer .proto-toc__cross a {
    transition: none;
  }
}