.page-home {
  --home-pad: clamp(20px, 4vw, 44px);
  --home-line: rgba(23, 58, 94, 0.14);
  --home-focus: var(--bs-sand);
  background: var(--bs-mist);
  color: var(--bs-graphite);
  font-family: var(--bs-body);
  overflow-x: hidden;
}

.page-home a {
  color: inherit;
}

.page-home img {
  display: block;
  max-width: 100%;
  height: auto;
}

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

/* 首屏 */
.home-lead__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
  padding-block: clamp(34px, 6vw, 82px);
}

.home-lead__eyebrow {
  margin: 0;
  color: var(--bs-lake);
}

.home-lead__title {
  margin: 14px 0 0;
  font-family: var(--bs-heading);
  font-weight: 800;
  font-size: clamp(33px, 7vw, 66px);
  line-height: 1.06;
  letter-spacing: -0.03em;
  color: var(--bs-indigo-deep);
}

.home-lead__lede {
  margin: 20px 0 0;
  max-width: 32em;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.9;
}

.home-steps {
  margin-top: 32px;
}

.home-steps__caption {
  margin: 0 0 10px;
  font-family: var(--bs-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--bs-lake);
}

.home-steps__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.home-step {
  display: block;
  padding: 10px 0 12px;
  text-decoration: none;
  border-top: 1px solid var(--home-line);
}

.home-step__num {
  display: block;
  font-family: var(--bs-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--bs-lake);
}

.home-step__label {
  display: block;
  margin-top: 4px;
  font-family: var(--bs-heading);
  font-weight: 700;
  font-size: 16px;
  color: var(--bs-indigo-deep);
  transition: color 120ms var(--bs-ease);
}

.home-step__bar {
  display: block;
  position: relative;
  height: 2px;
  margin-top: 10px;
  background: var(--bs-line);
  overflow: hidden;
}

.home-step__bar::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 0;
  background: var(--bs-sand);
  transition: width 320ms var(--bs-ease);
}

.home-steps__item.is-done .home-step__bar::after {
  width: 100%;
}

.home-steps__item.is-active .home-step__bar::after {
  width: 46%;
}

.home-step:hover .home-step__label {
  color: var(--bs-lake);
}

.home-lead__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.95;
}

.home-lead__note p {
  margin: 0;
}

/* 深色目录块 */
.home-lead__index {
  background: var(--bs-indigo);
  color: var(--bs-white);
  border-top: 3px solid var(--bs-sand);
  padding-top: 22px;
}

.home-index__head {
  margin: 0 0 8px;
  padding-inline: var(--home-pad);
  font-family: var(--bs-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--bs-lake-soft);
}

.home-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: idx;
}

.home-index__list li {
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.home-index__link {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 2px 12px;
  padding: 14px var(--home-pad);
  text-decoration: none;
  font-family: var(--bs-heading);
  font-weight: 700;
  font-size: 16px;
  transition: background 120ms var(--bs-ease);
}

.home-index__link::before {
  counter-increment: idx;
  content: counter(idx, decimal-leading-zero);
  grid-row: 1 / span 2;
  padding-top: 3px;
  font-family: var(--bs-mono);
  font-size: 12px;
  font-weight: 400;
  color: var(--bs-sand);
}

.home-index__link span {
  grid-column: 2;
  display: block;
  font-family: var(--bs-body);
  font-weight: 400;
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.66);
}

.home-index__link:hover {
  background: rgba(255, 255, 255, 0.07);
}

.home-index__copy {
  margin: 0;
  padding: 14px var(--home-pad) 18px;
}

.home-copybtn {
  font-size: 12.5px;
  padding: 7px 12px;
  border: 1px solid rgba(169, 211, 216, 0.42);
  background: transparent;
  color: var(--bs-lake-soft);
  cursor: pointer;
}

.home-copybtn:hover {
  border-color: var(--bs-sand);
  color: var(--bs-sand);
}

.home-index__figure {
  margin: 16px 0 0;
}

/* 三步说明 */
.home-stepsnote {
  background: var(--bs-white);
  border-block: 1px solid var(--home-line);
  padding-block: clamp(32px, 5vw, 58px);
}

.home-stepsnote__intro {
  margin: 0 0 30px;
  max-width: 42em;
  font-size: 14.5px;
  line-height: 1.9;
}

.home-stepsnote__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.home-stepnote {
  border-left: 1px solid var(--home-line);
  padding-left: 18px;
}

.home-stepnote__num {
  margin: 0;
  font-family: var(--bs-mono);
  font-size: 26px;
  line-height: 1;
  color: var(--bs-lake-soft);
}

.home-stepnote__title {
  margin: 10px 0 8px;
  font-family: var(--bs-heading);
  font-weight: 700;
  font-size: 17px;
  color: var(--bs-indigo-deep);
}

.home-stepnote__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.85;
}

/* 标签矩阵 */
.home-tags {
  padding-block: clamp(46px, 7vw, 94px);
}

.home-tags__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-bottom: 30px;
}

.home-tags__eyebrow {
  margin: 0;
  color: var(--bs-lake);
}

.home-tags__title {
  margin: 12px 0 0;
  font-family: var(--bs-heading);
  font-weight: 800;
  font-size: clamp(26px, 3.6vw, 42px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--bs-indigo-deep);
}

.home-tags__lede {
  margin: 0;
  max-width: 38em;
  font-size: 14.5px;
  line-height: 1.9;
}

.home-tags__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.home-tags__main {
  min-width: 0;
}

.home-tags__filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.home-tags__filter .bs-filter__btn {
  appearance: none;
  font: inherit;
  font-size: 13px;
  letter-spacing: 0.05em;
  padding: 8px 14px;
  background: var(--bs-white);
  border: 1px solid var(--home-line);
  color: var(--bs-indigo-deep);
  cursor: pointer;
  transition: background 120ms var(--bs-ease), border-color 120ms var(--bs-ease);
}

.home-tags__filter .bs-filter__btn:hover {
  border-color: var(--bs-lake);
}

.home-tags__filter .bs-filter__btn.is-active {
  background: var(--bs-sand);
  border-color: var(--bs-sand);
  color: var(--bs-indigo-deep);
  font-weight: 700;
}

.home-tags__status {
  margin: 10px 0 0;
  font-family: var(--bs-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--bs-lake);
  min-height: 1em;
}

.home-tags__list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.home-tag {
  min-width: 0;
}

.home-tag[hidden],
.home-tag.is-hidden {
  display: none;
}

.home-tag__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 3px 12px;
  padding: 14px 16px;
  background: var(--bs-white);
  border: 1px solid var(--home-line);
  text-decoration: none;
  transition: border-color 120ms var(--bs-ease);
}

.home-tag__link:hover {
  border-color: var(--bs-lake);
}

.home-tag__badge {
  grid-row: span 2;
  align-self: start;
  padding: 4px 8px;
  font-family: var(--bs-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  background: var(--bs-lake-soft);
  color: var(--bs-indigo-deep);
}

.home-tag[data-filter-tags="注册"] .home-tag__badge {
  background: var(--bs-sand);
  color: var(--bs-indigo-deep);
}

.home-tag[data-filter-tags="入口"] .home-tag__badge {
  background: var(--bs-lake);
  color: var(--bs-white);
}

.home-tag[data-filter-tags="标签"] .home-tag__badge {
  background: var(--bs-indigo);
  color: var(--bs-white);
}

.home-tag__name {
  font-family: var(--bs-heading);
  font-weight: 700;
  font-size: 15px;
  color: var(--bs-indigo-deep);
}

.home-tag__desc {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--bs-graphite);
}

.home-tags__figure {
  margin: 0;
  border-top: 2px solid var(--bs-lake-soft);
  background: var(--bs-white);
}

/* 地貌纹理带 */
.home-ridge {
  margin: 0;
}

.home-ridge img {
  width: 100%;
  height: clamp(150px, 20vw, 260px);
  object-fit: cover;
}

/* 桌面端理由 */
.home-desktop {
  background: var(--bs-white);
  border-block: 1px solid var(--home-line);
  padding-block: clamp(46px, 7vw, 90px);
}

.home-desktop__head {
  max-width: 44em;
  margin-bottom: 32px;
}

.home-desktop__eyebrow {
  margin: 0;
  color: var(--bs-lake);
}

.home-desktop__title {
  margin: 12px 0 0;
  font-family: var(--bs-heading);
  font-weight: 800;
  font-size: clamp(26px, 3.6vw, 42px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--bs-indigo-deep);
}

.home-desktop__lede {
  margin: 16px 0 0;
  font-size: 14.5px;
  line-height: 1.9;
}

.home-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border-top: 1px solid var(--home-line);
}

.home-fact {
  padding: 22px 0;
  border-bottom: 1px solid var(--home-line);
}

.home-fact__num {
  margin: 0;
  font-family: var(--bs-mono);
  font-size: clamp(30px, 4vw, 42px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--bs-indigo);
}

.home-fact__num span {
  margin-left: 4px;
  font-size: 13px;
  color: var(--bs-lake);
}

.home-fact__label {
  margin: 12px 0 6px;
  font-family: var(--bs-heading);
  font-weight: 700;
  font-size: 14px;
  color: var(--bs-indigo-deep);
}

.home-fact__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
}

.home-proof {
  margin-top: 32px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  padding: 22px 22px;
  background: var(--bs-lake-soft);
}

.home-proof__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--bs-indigo-deep);
}

.home-proof__link {
  justify-self: start;
}

/* 升级记录 */
.home-log {
  background: var(--bs-indigo-deep);
  color: var(--bs-white);
  padding-block: clamp(46px, 7vw, 94px);
}

.home-log__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

.home-log__eyebrow {
  margin: 0;
  color: var(--bs-lake-soft);
}

.home-log__title {
  margin: 12px 0 0;
  font-family: var(--bs-heading);
  font-weight: 800;
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--bs-white);
}

.home-log__text {
  margin: 16px 0 0;
  font-size: 14.5px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.78);
}

.home-log__figure {
  margin: 26px 0 0;
}

.home-log__more {
  display: inline-block;
  margin-top: 20px;
  padding-bottom: 3px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--bs-sand);
  text-decoration: none;
  border-bottom: 1px solid rgba(217, 164, 65, 0.5);
}

.home-log__more:hover {
  color: var(--bs-white);
  border-bottom-color: var(--bs-white);
}

.home-log__body {
  min-width: 0;
}

.home-log__item {
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.home-log__heading {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.home-log__trigger {
  width: 100%;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 4px 14px;
  padding: 18px 0;
  background: none;
  border: 0;
  color: inherit;
  text-align: left;
  font: inherit;
  cursor: pointer;
}

.home-log__ver {
  font-family: var(--bs-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--bs-sand);
  white-space: nowrap;
}

.home-log__title {
  font-family: var(--bs-heading);
  font-weight: 700;
  font-size: 16px;
  color: var(--bs-white);
}

.home-log__date {
  font-family: var(--bs-mono);
  font-size: 11.5px;
  color: rgba(255, 255, 255, 0.55);
  white-space: nowrap;
}

.home-log__trigger:hover .home-log__title {
  color: var(--bs-sand);
}

.home-log__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 220ms var(--bs-ease);
}

.home-log__item[data-open] .home-log__panel {
  grid-template-rows: 1fr;
}

.home-log__panelinner {
  overflow: hidden;
  min-height: 0;
}

.home-log__meta {
  margin: 0;
  padding: 0 0 20px;
  display: grid;
  gap: 10px;
}

.home-log__meta div {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 12px;
}

.home-log__meta dt {
  padding-top: 2px;
  font-family: var(--bs-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--bs-lake-soft);
}

.home-log__meta dd {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.82);
}

.home-log__feedback {
  margin-top: 30px;
  padding-left: 18px;
  border-left: 2px solid var(--bs-sand);
}

.home-log__fbtext {
  margin: 0 0 16px;
  font-size: 13.5px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.78);
}

.home-log__fbbtn {
  padding: 11px 20px;
  background: var(--bs-sand);
  border: 1px solid var(--bs-sand);
  color: var(--bs-indigo-deep);
  font-weight: 700;
  text-decoration: none;
}

.home-log__fbbtn:hover {
  background: var(--bs-white);
  border-color: var(--bs-white);
}

/* 响应式 */
@media (min-width: 620px) {
  .home-tags__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .home-stepsnote__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 30px;
  }

  .home-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-bottom: 1px solid var(--home-line);
  }

  .home-fact {
    border-bottom: 0;
    border-right: 1px solid var(--home-line);
    padding: 24px 24px 24px 0;
  }

  .home-fact + .home-fact {
    padding-left: 24px;
  }

  .home-fact:last-child {
    border-right: 0;
    padding-right: 0;
  }

  .home-proof {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 28px;
    padding: 24px 28px;
  }
}

@media (min-width: 900px) {
  .home-lead__grid {
    grid-template-columns: 5fr 2.4fr 4.6fr;
    gap: 44px;
    align-items: start;
  }

  .home-lead__note {
    padding-top: 12px;
  }

  .home-tags__head {
    grid-template-columns: 1.25fr 1fr;
    align-items: end;
    gap: 40px;
  }
}

@media (min-width: 980px) {
  .home-tags__body {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .home-log__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 56px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .home-step__bar::after,
  .page-home .home-step__label,
  .page-home .home-log__panel,
  .page-home .home-index__link,
  .page-home .home-tag__link {
    transition-duration: 1ms;
  }
}