.page-disclaimer {
  --tc-panel: rgba(20, 23, 27, 0.82);
  --tc-edge: rgba(47, 224, 214, 0.18);
  --tc-text: #cfc9c1;
  background: var(--fh-carbon);
  color: var(--fh-bone);
}

/* ---------- 首屏 ---------- */
.page-disclaimer .tc-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--fh-iron);
  background:
    linear-gradient(180deg, rgba(14, 107, 112, 0.34) 0%, rgba(10, 11, 13, 0.96) 78%),
    var(--fh-carbon);
}

.page-disclaimer .tc-hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.page-disclaimer .tc-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.28;
  filter: saturate(0.85) contrast(1.08);
}

.page-disclaimer .tc-hero__inner {
  position: relative;
  padding-top: clamp(22px, 5vw, 44px);
  padding-bottom: clamp(42px, 8vw, 96px);
}

.page-disclaimer .tc-hero__crumb {
  margin-bottom: clamp(26px, 5vw, 52px);
}

.page-disclaimer .fh-breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--fh-mist);
}

.page-disclaimer .fh-breadcrumb__item a {
  color: var(--fh-mist);
  text-decoration: none;
}

.page-disclaimer .fh-breadcrumb__item a:hover {
  color: var(--fh-cyan);
}

.page-disclaimer .fh-breadcrumb__item[aria-current="page"] {
  color: var(--fh-bone);
}

.page-disclaimer .fh-breadcrumb__sep {
  color: var(--fh-iron);
}

.page-disclaimer .tc-hero__eyebrow {
  margin: 0 0 14px;
  font-family: var(--fh-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--fh-cyan);
}

.page-disclaimer .tc-hero__title {
  margin: 0;
  font-size: clamp(2.7rem, 11vw, 6rem);
  font-weight: 900;
  line-height: 0.94;
  letter-spacing: -0.03em;
  color: var(--fh-bone);
  transform: skewX(-7deg);
  transform-origin: left bottom;
  text-shadow: 0 18px 60px rgba(0, 0, 0, 0.6);
}

.page-disclaimer .tc-hero__lead {
  max-width: 42em;
  margin: clamp(20px, 4vw, 34px) 0 0;
  font-size: clamp(0.95rem, 1.6vw, 1.08rem);
  line-height: 1.85;
  color: var(--tc-text);
}

.page-disclaimer .tc-hero__side {
  display: none;
}

/* ---------- 两栏主体 ---------- */
.page-disclaimer .tc-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 60px);
  padding-top: clamp(34px, 6vw, 76px);
  padding-bottom: clamp(52px, 9vw, 130px);
}

/* ---------- 左栏索引 ---------- */
.page-disclaimer .tc-rail__title {
  margin: 0 0 12px;
  font-family: var(--fh-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--fh-mist);
}

.page-disclaimer .tc-rail__nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: none;
}

.page-disclaimer .tc-rail__nav::-webkit-scrollbar {
  display: none;
}

.page-disclaimer .tc-rail__item {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 13px;
  border: 1px solid var(--fh-iron);
  background: rgba(20, 23, 27, 0.5);
  color: var(--fh-mist);
  font-size: 0.82rem;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.22s var(--fh-ease), border-color 0.22s var(--fh-ease), background 0.22s var(--fh-ease);
}

.page-disclaimer .tc-rail__item:hover {
  color: var(--fh-bone);
  border-color: rgba(47, 224, 214, 0.5);
}

.page-disclaimer .tc-rail__item.is-active {
  color: var(--fh-carbon);
  background: var(--fh-cyan);
  border-color: var(--fh-cyan);
}

.page-disclaimer .tc-rail__dot {
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  background: currentColor;
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.page-disclaimer .tc-rail__num {
  font-family: var(--fh-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.78rem;
  opacity: 0.85;
}

/* ---------- 条款正文 ---------- */
.page-disclaimer .tc-clauses {
  display: flex;
  flex-direction: column;
  gap: clamp(34px, 5vw, 62px);
  min-width: 0;
}

.page-disclaimer .tc-clause {
  border-top: 1px solid var(--tc-edge);
  padding-top: clamp(24px, 3.6vw, 40px);
  scroll-margin-top: calc(var(--fh-nav-h) + 32px);
}

.page-disclaimer .tc-clause__head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 18px;
}

.page-disclaimer .tc-clause__num {
  font-size: clamp(1.9rem, 5vw, 3rem);
  line-height: 1;
  color: var(--fh-flame);
  letter-spacing: -0.02em;
}

.page-disclaimer .tc-clause__title {
  margin: 0;
  font-size: clamp(1.4rem, 3.6vw, 2.15rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--fh-bone);
}

.page-disclaimer .tc-clause__body {
  max-width: 44em;
}

.page-disclaimer .tc-clause__body p {
  margin: 0 0 1.05em;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--tc-text);
}

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

.page-disclaimer .tc-clause__body--after {
  margin-top: 1.4rem;
}

/* 三类使用情形 */
.page-disclaimer .tc-usecases {
  display: grid;
  gap: 14px;
  margin-top: 1.6rem;
}

.page-disclaimer .tc-usecase {
  position: relative;
  padding: 22px 18px 24px;
  border: 1px solid var(--fh-iron);
  background: linear-gradient(158deg, var(--tc-panel) 0%, rgba(10, 11, 13, 0.62) 100%);
  transition: transform 0.25s var(--fh-ease), border-color 0.25s var(--fh-ease);
}

.page-disclaimer .tc-usecase::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 38px;
  height: 2px;
  background: var(--fh-flame);
}

.page-disclaimer .tc-usecase:hover {
  transform: translateY(-6px);
  border-color: rgba(47, 224, 214, 0.55);
}

.page-disclaimer .tc-usecase--amber::after {
  background: var(--fh-amber);
}

.page-disclaimer .tc-usecase--hot::after {
  background: var(--fh-ember);
}

.page-disclaimer .tc-usecase__label {
  margin: 0 0 10px;
  font-family: var(--fh-font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--fh-cyan);
}

.page-disclaimer .tc-usecase--amber .tc-usecase__label {
  color: var(--fh-amber);
}

.page-disclaimer .tc-usecase--hot .tc-usecase__label {
  color: var(--fh-flame);
}

.page-disclaimer .tc-usecase__text {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--tc-text);
}

/* 受限行为列表 */
.page-disclaimer .tc-rules {
  list-style: none;
  margin: 1.3rem 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  max-width: 44em;
}

.page-disclaimer .tc-rules li {
  position: relative;
  padding-left: 24px;
  font-size: 0.97rem;
  line-height: 1.75;
  color: var(--tc-text);
}

.page-disclaimer .tc-rules li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.76em;
  width: 13px;
  height: 1px;
  background: var(--fh-cyan);
}

/* ---------- 收口联系块 ---------- */
.page-disclaimer .tc-contact {
  margin-top: clamp(34px, 5vw, 60px);
  padding: clamp(22px, 3.4vw, 34px);
  border: 1px solid var(--fh-iron);
  border-left: 3px solid var(--fh-flame);
  background:
    linear-gradient(120deg, rgba(194, 21, 27, 0.14) 0%, rgba(14, 107, 112, 0.12) 60%, rgba(10, 11, 13, 0.4) 100%),
    var(--fh-ink);
}

.page-disclaimer .tc-contact__kicker {
  margin: 0 0 18px;
  font-family: var(--fh-font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--fh-amber);
}

.page-disclaimer .tc-contact__grid {
  display: grid;
  gap: 12px;
}

.page-disclaimer .tc-contact__card {
  position: relative;
  display: grid;
  gap: 6px;
  padding: 18px 44px 18px 18px;
  border: 1px solid var(--fh-iron);
  background: rgba(10, 11, 13, 0.6);
  text-decoration: none;
  transition: transform 0.25s var(--fh-ease), border-color 0.25s var(--fh-ease);
}

.page-disclaimer .tc-contact__card:hover {
  transform: translateY(-4px);
  border-color: var(--fh-cyan);
}

.page-disclaimer .tc-contact__name {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--fh-bone);
}

.page-disclaimer .tc-contact__desc {
  font-size: 0.86rem;
  line-height: 1.65;
  color: var(--fh-mist);
}

.page-disclaimer .tc-contact__arrow {
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--fh-font-mono);
  color: var(--fh-flame);
}

.page-disclaimer .tc-contact__meta {
  margin: 22px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--fh-iron);
  display: grid;
  gap: 10px;
}

.page-disclaimer .tc-contact__meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: baseline;
}

.page-disclaimer .tc-contact__meta-row dt {
  font-family: var(--fh-font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  color: var(--fh-mist);
  min-width: 5.5em;
}

.page-disclaimer .tc-contact__meta-row dd {
  margin: 0;
  font-size: 0.94rem;
  color: var(--fh-bone);
  font-variant-numeric: tabular-nums;
}

.page-disclaimer .tc-contact__meta-row dd a {
  color: var(--fh-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 224, 214, 0.35);
}

.page-disclaimer .tc-contact__meta-row dd a:hover {
  color: var(--fh-amber);
  border-bottom-color: var(--fh-amber);
}

.page-disclaimer .tc-contact__note {
  margin: 18px 0 0;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--fh-mist);
}

.page-disclaimer .tc-contact__note a {
  color: var(--fh-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 224, 214, 0.35);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-disclaimer .tc-usecases {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-disclaimer .tc-contact__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .page-disclaimer .tc-body {
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
  }

  .page-disclaimer .tc-rail {
    position: sticky;
    top: calc(var(--fh-nav-h) + 28px);
    align-self: start;
    border-right: 1px solid var(--fh-iron);
    padding-right: 20px;
  }

  .page-disclaimer .tc-rail__nav {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
    gap: 6px;
  }

  .page-disclaimer .tc-rail__item {
    width: 100%;
    justify-content: flex-start;
    white-space: normal;
    border-color: transparent;
    border-left: 2px solid var(--fh-iron);
    background: transparent;
    padding: 8px 10px 8px 12px;
  }

  .page-disclaimer .tc-rail__item.is-active {
    background: transparent;
    border-color: var(--fh-cyan);
    border-left-color: var(--fh-cyan);
    color: var(--fh-cyan);
  }

  .page-disclaimer .tc-hero__inner {
    padding-left: clamp(0px, 2vw, 28px);
  }

  .page-disclaimer .tc-hero__side {
    display: block;
    position: absolute;
    right: clamp(18px, 4vw, 54px);
    bottom: clamp(38px, 6vw, 86px);
    margin: 0;
    writing-mode: vertical-rl;
    font-size: 12px;
    letter-spacing: 0.32em;
    color: var(--fh-mist);
  }
}

@media (min-width: 1200px) {
  .page-disclaimer .tc-body {
    grid-template-columns: 268px minmax(0, 1fr);
  }

  .page-disclaimer .tc-clause__head {
    gap: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .tc-usecase,
  .page-disclaimer .tc-contact__card,
  .page-disclaimer .tc-rail__item {
    transition: none;
  }

  .page-disclaimer .tc-usecase:hover,
  .page-disclaimer .tc-contact__card:hover {
    transform: none;
  }
}