.page-home {
  --home-gap: clamp(14px, 2vw, 22px);
  --home-pad: clamp(20px, 3.2vw, 46px);
  --home-num: clamp(52px, 6.6vw, 108px);
  --home-num-sm: clamp(32px, 4vw, 58px);
  --home-rule: 1px solid var(--line-strong);
}

.page-home h1,
.page-home h2,
.page-home h3,
.page-home p,
.page-home figure,
.page-home dl,
.page-home dd {
  margin: 0;
}

.page-home ul,
.page-home ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(15, 91, 216, .28);
  transition: border-color .16s ease, color .16s ease;
}

.page-home a:hover,
.page-home a:focus-visible {
  color: var(--blue-deep);
  border-bottom-color: var(--blue-deep);
}

.page-home section[id] {
  scroll-margin-top: calc(var(--header-space) + 32px);
}

.page-home .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.page-home .section__lede {
  max-width: 64ch;
  margin-top: 14px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--steel-500);
}

.page-home .section--dark .section__lede,
.page-home .section__eyebrow--dark {
  color: var(--dark-muted);
}

/* ---------- 快速跳转条 ---------- */
.page-home .jump {
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

.page-home .jump__inner {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px var(--gutter);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 18px;
}

.page-home .jump__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--steel-500);
}

.page-home .jump__link {
  font-size: 14px;
  color: var(--steel-700);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}

.page-home .jump__link:hover,
.page-home .jump__link:focus-visible {
  color: var(--blue);
  border-bottom-color: var(--blue);
}

/* ---------- 框景首屏 ---------- */
.page-home .hero {
  padding: clamp(20px, 3vw, 44px) 0 0;
}

.page-home .hero__frame {
  position: relative;
  padding: var(--home-pad);
  padding-left: calc(var(--home-pad) + 10px);
  background: var(--white);
  border: var(--home-rule);
  border-radius: var(--r-2);
  box-shadow: var(--shadow-1);
  overflow: hidden;
}

.page-home .hero__frame::before,
.page-home .hero__frame::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid var(--hot);
  pointer-events: none;
}

.page-home .hero__frame::before {
  top: 10px;
  right: 10px;
  border-left: 0;
  border-bottom: 0;
}

.page-home .hero__frame::after {
  bottom: 10px;
  left: 10px;
  border-right: 0;
  border-top: 0;
}

.page-home .hero__ticks {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 9px;
  background: repeating-linear-gradient(to right, var(--line-strong) 0 1px, transparent 1px 22px);
  opacity: .45;
  pointer-events: none;
}

.page-home .hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3vw, 42px);
  align-items: start;
}

.page-home .hero__eyebrow {
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--steel-500);
  margin-bottom: 16px;
}

.page-home .hero__eyebrow .mono {
  font-size: 15px;
  font-weight: 700;
  color: var(--hot);
  letter-spacing: 0;
}

.page-home .hero__lead h1 {
  max-width: 20ch;
}

.page-home .hero__intro {
  margin-top: 20px;
  max-width: 36em;
  font-size: 17px;
  line-height: 1.85;
  color: var(--steel-700);
}

.page-home .hero__actions {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-home .hero__visual .img-frame {
  margin: 0;
}

/* ---------- 首屏年限分层信息带 ---------- */
.page-home .hero__band {
  margin-top: clamp(26px, 3.2vw, 42px);
  display: grid;
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.page-home .band-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px 20px;
  padding: 16px 18px;
  background: var(--white);
  border-left: 3px solid var(--steel-700);
  transition: background-color .18s ease;
}

.page-home .band-row--core {
  border-left-color: var(--cyan);
}

.page-home .band-row--wear {
  border-left-color: var(--hot);
}

.page-home .band-row:hover {
  background: var(--paper);
}

.page-home .band-row__tag {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--steel-500);
}

.page-home .band-row__num {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-size: var(--home-num-sm);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--ink);
}

.page-home .band-row__unit {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--steel-500);
}

.page-home .band-row__desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--steel-700);
}

/* ---------- 报修节奏 ---------- */
.page-home .rhythm__grid {
  margin-top: clamp(26px, 3.4vw, 44px);
  gap: clamp(28px, 3.4vw, 56px);
}

.page-home .rhythm__list {
  position: relative;
  padding-left: 30px;
  display: grid;
  gap: clamp(18px, 2.4vw, 26px);
}

.page-home .rhythm__list::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--line-strong);
}

.page-home .rhythm__step {
  position: relative;
}

.page-home .rhythm__step::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 7px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--blue);
  transition: background-color .18s ease, border-color .18s ease;
}

.page-home .rhythm__step:hover::before {
  background: var(--blue);
}

.page-home .rhythm__step--hot::before {
  border-color: var(--hot);
}

.page-home .rhythm__step--hot:hover::before {
  background: var(--hot);
}

.page-home .rhythm__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.page-home .rhythm__no {
  font-size: 13px;
  font-weight: 700;
  color: var(--steel-500);
  letter-spacing: .06em;
}

.page-home .rhythm__step p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--steel-700);
  max-width: 46em;
}

.page-home .rhythm__wave {
  margin-top: clamp(22px, 3vw, 34px);
  padding: 18px 16px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-2);
}

.page-home .wave {
  display: block;
  width: 100%;
  height: auto;
  color: var(--steel-500);
}

.page-home .wave__baseline {
  stroke: currentColor;
  stroke-width: 1;
  opacity: .35;
}

.page-home .wave__tick {
  stroke: currentColor;
  stroke-width: 1;
  opacity: .4;
}

.page-home .wave__trace {
  fill: none;
  stroke: var(--hot);
  stroke-width: 2;
}

.page-home .wave__node {
  fill: var(--hot);
}

.page-home .rhythm__aside .img-frame {
  margin: 0;
}

/* ---------- 按部件查年限 ---------- */
.page-home .warranty__grid {
  margin-top: clamp(26px, 3.4vw, 44px);
  gap: clamp(28px, 3.4vw, 56px);
}

.page-home .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 24px;
}

.page-home .tabs__btn {
  appearance: none;
  margin-bottom: -1px;
  padding: 10px 18px;
  font: inherit;
  font-size: 15px;
  font-weight: 500;
  color: var(--steel-500);
  background: transparent;
  border: 1px solid transparent;
  border-bottom: none;
  border-radius: var(--r-2) var(--r-2) 0 0;
  cursor: pointer;
  transition: color .16s ease, background-color .16s ease, border-color .16s ease;
}

.page-home .tabs__btn:hover {
  color: var(--ink);
}

.page-home .tabs__btn[aria-selected="true"] {
  color: var(--ink);
  background: var(--white);
  border-color: var(--line);
  border-bottom-color: var(--white);
}

.page-home .tabs__btn:focus-visible {
  outline: 2px solid var(--hot);
  outline-offset: 2px;
}

.page-home .tabs__panel {
  padding: 4px 0 0;
}

.page-home .warranty__num {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: var(--home-num);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.04em;
  color: var(--ink);
}

.page-home .warranty__unit {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--steel-500);
}

.page-home .warranty__note {
  margin-top: 16px;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--steel-700);
}

.page-home .warranty__list {
  margin-top: 18px;
  display: grid;
  gap: 10px;
}

.page-home .warranty__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--steel-700);
}

.page-home .warranty__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 8px;
  height: 2px;
  background: var(--blue);
}

.page-home .warranty__parts {
  padding: 24px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-2);
}

.page-home .warranty__parts .t-h3 {
  margin-bottom: 18px;
}

.page-home .parts__group {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--steel-500);
}

.page-home .parts__dot {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: var(--cyan);
}

.page-home .parts__dot--hot {
  background: var(--hot);
}

.page-home .parts__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.page-home .parts__list li {
  padding: 5px 12px;
  font-size: 14px;
  color: var(--steel-700);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r-1);
}

.page-home .warranty__parts .btn {
  margin-bottom: 12px;
}

.page-home .warranty__hint {
  font-size: 13px;
  line-height: 1.75;
  color: var(--steel-500);
}

.page-home .warranty__figure {
  margin-top: clamp(28px, 3.6vw, 48px);
}

/* ---------- 在线工具 ---------- */
.page-home .tools {
  margin-top: clamp(26px, 3.4vw, 44px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--home-gap);
}

.page-home .tools__card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 28px 24px 24px;
  height: 100%;
}

.page-home .tools__card .t-h3 {
  margin-top: 4px;
}

.page-home .tools__card p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--steel-700);
}

.page-home .tools__card .btn {
  align-self: flex-start;
  margin-top: auto;
  padding-top: 0;
}

.page-home .tools__card--lead {
  padding-bottom: 28px;
}

/* ---------- 服务半径与合作规模 ---------- */
.page-home .network__grid {
  gap: clamp(28px, 3.4vw, 56px);
  align-items: start;
}

.page-home .network__copy .section__title {
  max-width: 22ch;
}

.page-home .network__lede {
  margin-top: 20px;
  max-width: 46em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--dark-muted);
}

.page-home .network__stats {
  margin-top: clamp(26px, 3.4vw, 40px);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 16px;
}

.page-home .stat {
  padding-top: 12px;
  border-top: 1px solid var(--line-dark);
}

.page-home .stat__value {
  display: flex;
  align-items: baseline;
  gap: 4px;
  font-size: clamp(28px, 3.4vw, 46px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--white);
}

.page-home .stat__unit {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--hot);
}

.page-home .stat__label {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--dark-muted);
}

.page-home .network__visual .img-frame {
  margin: 0;
}

/* ---------- 高频场景快答 ---------- */
.page-home .faq {
  margin-top: clamp(24px, 3vw, 36px);
  border-top: 1px solid var(--line-strong);
}

.page-home .faq__item {
  border-bottom: 1px solid var(--line);
}

.page-home .faq__trigger {
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 22px 0;
  font: inherit;
  font-size: clamp(16px, 1.6vw, 19px);
  font-weight: 500;
  line-height: 1.6;
  color: var(--ink);
  text-align: left;
  background: transparent;
  border: 0;
  cursor: pointer;
  transition: color .16s ease;
}

.page-home .faq__trigger:hover {
  color: var(--blue);
}

.page-home .faq__trigger:focus-visible {
  outline: 2px solid var(--hot);
  outline-offset: 3px;
}

.page-home .disclosure__sign {
  flex: none;
  position: relative;
  width: 20px;
  height: 20px;
  margin-top: 4px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  transition: border-color .18s ease;
}

.page-home .disclosure__sign::before,
.page-home .disclosure__sign::after {
  content: "";
  position: absolute;
  background: var(--steel-700);
  transition: transform .18s ease;
}

.page-home .disclosure__sign::before {
  left: 4px;
  right: 4px;
  top: 9px;
  height: 1px;
}

.page-home .disclosure__sign::after {
  top: 4px;
  bottom: 4px;
  left: 9px;
  width: 1px;
}

.page-home .faq__trigger[aria-expanded="true"] .disclosure__sign {
  border-color: var(--hot);
}

.page-home .faq__trigger[aria-expanded="true"] .disclosure__sign::after {
  transform: scaleY(0);
}

.page-home .faq__panel {
  padding: 0 0 24px;
}

.page-home .faq__panel p {
  max-width: 60em;
  font-size: 15px;
  line-height: 1.9;
  color: var(--steel-700);
}

.page-home .faq__more {
  margin-top: 26px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--steel-500);
}

/* ---------- 响应式 ---------- */
@media (min-width: 800px) {
  .page-home .band-row {
    grid-template-columns: 118px 190px minmax(0, 1fr);
    align-items: center;
    padding: 18px 24px;
  }

  .page-home .band-row__desc {
    padding-left: 20px;
    border-left: 1px solid var(--line-soft);
  }
}

@media (min-width: 900px) {
  .page-home .hero__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 60px);
  }

  .page-home .tools {
    grid-template-columns: 1.3fr 1fr 1fr;
  }

  .page-home .network__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px 20px;
  }
}

@media (max-width: 759px) {
  .page-home .hero__frame::before,
  .page-home .hero__frame::after {
    display: none;
  }

  .page-home .warranty__grid,
  .page-home .rhythm__grid,
  .page-home .network__grid {
    gap: 28px;
  }

  .page-home .jump__label {
    width: 100%;
  }

  .page-home .stat__value {
    font-size: clamp(26px, 8vw, 34px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home *,
  .page-home *::before,
  .page-home *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}