.page-home {
  --ph-gap: clamp(28px, 5vw, 64px);
  --ph-pad: clamp(16px, 4vw, 40px);
  max-width: 1440px;
  margin-inline: auto;
  padding: clamp(20px, 4vw, 48px) var(--ph-pad) clamp(48px, 8vw, 104px);
  color: var(--paper);
  font-family: var(--font-body);
  line-height: 1.75;
}

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

.page-home a {
  color: inherit;
}

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

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

.page-home .mono {
  font-family: var(--font-mono);
}

.page-home .label {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

/* ============ 首屏 ============ */
.page-home .hero {
  position: relative;
  display: grid;
  gap: var(--ph-gap);
  padding-block: clamp(12px, 3vw, 36px) clamp(36px, 6vw, 80px);
  border-bottom: 1px solid var(--line);
}

.page-home .hero__eyebrow {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lime);
  margin-block-end: clamp(18px, 3vw, 30px);
}

.page-home .hero__title {
  font-family: var(--font-head);
  font-weight: 200;
  font-size: clamp(40px, 9.5vw, 88px);
  line-height: 0.94;
  letter-spacing: -0.02em;
  margin-block-end: clamp(18px, 3vw, 28px);
  color: var(--paper);
}

.page-home .hero__title span {
  display: block;
  color: var(--lime);
}

.page-home .hero__lede {
  max-width: 46ch;
  font-size: clamp(15px, 1.6vw, 17px);
  color: rgba(241, 246, 238, 0.82);
  margin-block-end: clamp(26px, 4vw, 42px);
}

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

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

.page-home .hero__index a {
  position: relative;
  display: grid;
  grid-template-columns: 48px 1fr auto;
  grid-template-areas:
    "code name arrow"
    "code desc arrow";
  align-items: center;
  gap: 2px 14px;
  padding: 14px 4px;
  text-decoration: none;
  transition: background-color 0.24s var(--ease), padding-inline-start 0.24s var(--ease);
}

.page-home .hero__index a:hover,
.page-home .hero__index a:focus-visible {
  background: rgba(198, 255, 61, 0.08);
  padding-inline-start: 12px;
}

.page-home .hero__index a:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
}

.page-home .hero__code {
  grid-area: code;
  font-size: 15px;
  color: var(--lime);
  letter-spacing: 0.06em;
}

.page-home .hero__name {
  grid-area: name;
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(20px, 2.4vw, 24px);
  letter-spacing: 0.01em;
}

.page-home .hero__desc {
  grid-area: desc;
  font-size: 13px;
  color: var(--gray);
  line-height: 1.6;
}

.page-home .hero__arrow {
  grid-area: arrow;
  color: var(--orange);
  font-size: 18px;
  transition: transform 0.24s var(--ease);
}

.page-home .hero__index a:hover .hero__arrow {
  transform: translateX(4px);
}

.page-home .hero__art {
  position: relative;
  border: 1px solid var(--line);
  background: var(--ink-deep);
}

.page-home .hero__art img {
  width: 100%;
  object-fit: cover;
}

.page-home .hero__cap {
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray);
  padding: 10px 14px;
  border-top: 1px solid var(--line);
}

/* ============ 章节通用头部 ============ */
.page-home .topohead,
.page-home .verhead,
.page-home .fbhead,
.page-home .coordhead {
  display: grid;
  gap: 10px;
  padding-block-end: clamp(20px, 3vw, 32px);
}

.page-home .topohead__num,
.page-home .verhead__num,
.page-home .fbhead__num,
.page-home .coordhead__num,
.page-home .region__num {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--lime);
}

.page-home .topohead__title,
.page-home .verhead__title,
.page-home .fbhead__title,
.page-home .coordhead__title,
.page-home .region__title {
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(28px, 4.4vw, 46px);
  line-height: 1.06;
  letter-spacing: -0.015em;
}

.page-home .topohead__lede,
.page-home .verhead__lede,
.page-home .fbhead__lede,
.page-home .coordhead__lede {
  max-width: 62ch;
  font-size: 15px;
  color: rgba(241, 246, 238, 0.76);
}

/* ============ 三板块拓扑 ============ */
.page-home .topology {
  padding-block: clamp(48px, 8vw, 96px);
  border-bottom: 1px solid var(--line);
}

.page-home .topo__figure {
  margin-block-end: clamp(28px, 4vw, 48px);
  border: 1px solid var(--line);
  background: var(--ink-deep);
}

.page-home .topo__figure img {
  width: 100%;
  object-fit: cover;
}

.page-home .topo__list {
  display: grid;
  gap: 0;
}

.page-home .topo__item {
  position: relative;
  padding: clamp(22px, 3vw, 32px) 0 clamp(22px, 3vw, 32px) clamp(18px, 2.4vw, 28px);
  border-top: 1px solid var(--line);
  border-left: 2px solid var(--gray);
  transition: border-left-color 0.3s var(--ease), background-color 0.3s var(--ease);
}

.page-home .topo__item:hover {
  background: rgba(255, 255, 255, 0.02);
}

.page-home .topo__item--member {
  border-left-color: var(--indigo-lit);
}

.page-home .topo__item--content {
  border-left-color: var(--wine-lit);
}

.page-home .topo__item--help {
  border-left-color: var(--lime);
}

.page-home .topo__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-block-end: 10px;
}

.page-home .topo__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gray);
}

.page-home .topo__item--member .topo__dot {
  background: var(--indigo-lit);
}

.page-home .topo__item--content .topo__dot {
  background: var(--wine-lit);
}

.page-home .topo__item--help .topo__dot {
  background: var(--lime);
}

.page-home .topo__code {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gray);
}

.page-home .topo__tag {
  color: var(--gray);
}

.page-home .topo__name {
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.15;
  margin-block-end: 10px;
}

.page-home .topo__text {
  max-width: 58ch;
  font-size: 15px;
  color: rgba(241, 246, 238, 0.78);
  margin-block-end: 14px;
}

.page-home .topo__link {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 122, 61, 0.45);
  padding-block-end: 2px;
  transition: border-color 0.24s var(--ease), color 0.24s var(--ease);
}

.page-home .topo__link:hover,
.page-home .topo__link:focus-visible {
  color: var(--orange-soft);
  border-bottom-color: var(--orange-soft);
}

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

/* ============ 版本节律 ============ */
.page-home .version {
  padding-block: clamp(48px, 8vw, 96px);
  border-bottom: 1px solid var(--line);
}

.page-home .version__grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-home .version__stat {
  padding: clamp(20px, 3vw, 30px);
  background: var(--paper);
  color: var(--ink);
}

.page-home .version__statlabel {
  color: var(--ink-mid);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.page-home .version__statnum {
  font-size: clamp(56px, 9vw, 82px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin-block: 8px 2px;
}

.page-home .version__statunit {
  font-size: 14px;
  color: var(--ink-mid);
  margin-block-end: 22px;
}

.page-home .version__bars {
  display: grid;
  gap: 10px;
}

.page-home .version__bars li {
  display: grid;
  grid-template-columns: 74px 1fr 34px;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  color: var(--ink-mid);
}

.page-home .version__bar {
  display: block;
  height: 6px;
  background: rgba(15, 61, 46, 0.14);
  overflow: hidden;
}

.page-home .version__bar i {
  display: block;
  height: 100%;
  background: var(--ink);
}

.page-home .version__barnum {
  text-align: right;
  color: var(--ink);
  font-size: 12.5px;
}

.page-home .version__steps {
  display: grid;
  gap: 0;
  border-left: 1px solid var(--line-strong);
  padding-inline-start: clamp(16px, 2.4vw, 26px);
}

.page-home .version__steps li {
  position: relative;
  padding-block: 14px;
}

.page-home .version__steps li + li {
  border-top: 1px solid var(--line-soft);
}

.page-home .version__steps li::before {
  content: "";
  position: absolute;
  left: calc(clamp(16px, 2.4vw, 26px) * -1 - 3.5px);
  top: 22px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gray);
}

.page-home .version__steps li.is-current::before {
  background: var(--lime);
  box-shadow: 0 0 0 4px rgba(198, 255, 61, 0.18);
}

.page-home .version__stepcode {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
  margin-block-end: 4px;
}

.page-home .version__steps li.is-current .version__stepcode {
  color: var(--lime);
}

.page-home .version__steps p {
  max-width: 56ch;
  font-size: 14.5px;
  color: rgba(241, 246, 238, 0.78);
}

.page-home .version__note {
  margin-block-start: 22px;
  padding-block-start: 18px;
  border-top: 1px solid var(--line);
  max-width: 58ch;
  font-size: 14px;
  color: var(--gray);
}

.page-home .version__seal {
  align-self: start;
  border: 1px solid var(--line);
  background: var(--ink-deep);
}

.page-home .version__seal img {
  width: 100%;
  object-fit: cover;
}

/* ============ 苹果端反馈时间轴 ============ */
.page-home .feedback {
  padding-block: clamp(48px, 8vw, 96px);
  border-bottom: 1px solid var(--line);
}

.page-home .tl {
  display: grid;
  gap: 0;
}

.page-home .tl__item {
  position: relative;
  padding-block: clamp(18px, 2.6vw, 26px) clamp(18px, 2.6vw, 26px);
  padding-inline-start: clamp(22px, 3vw, 34px);
  border-top: 1px solid var(--line);
}

.page-home .tl__item::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--line-strong);
}

.page-home .tl__dot {
  position: absolute;
  left: 0;
  top: calc(clamp(18px, 2.6vw, 26px) + 8px);
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 122, 61, 0.16);
}

.page-home .tl__item.is-live .tl__dot {
  background: var(--lime);
  box-shadow: 0 0 0 4px rgba(198, 255, 61, 0.2);
}

.page-home .tl__tick {
  display: block;
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--gray);
  margin-block-end: 6px;
}

.page-home .tl__title {
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.2;
  margin-block-end: 6px;
}

.page-home .tl__text {
  max-width: 54ch;
  font-size: 14.5px;
  color: rgba(241, 246, 238, 0.76);
}

.page-home .feedback__more {
  margin-block-start: clamp(24px, 4vw, 40px);
}

/* ============ 广东属地 ============ */
.page-home .region {
  position: relative;
  margin-block: clamp(48px, 8vw, 96px) 0;
  border: 1px solid var(--line);
  background: var(--ink-deep);
  overflow: hidden;
}

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

.page-home .region__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 42, 32, 0.35) 0%, rgba(10, 42, 32, 0.92) 88%);
}

.page-home .region__media img {
  width: 100%;
  object-fit: cover;
}

.page-home .region__body {
  position: relative;
  padding: clamp(22px, 4vw, 48px);
  margin-block-start: clamp(-90px, -7vw, -40px);
}

.page-home .region__title {
  margin-block: 10px 14px;
  color: var(--paper);
}

.page-home .region__text {
  max-width: 60ch;
  font-size: 15px;
  color: rgba(241, 246, 238, 0.8);
}

.page-home .region__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-block: clamp(22px, 3vw, 32px);
  padding-block: 18px;
  border-block: 1px solid var(--line);
}

.page-home .region__facts dt {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray);
  margin-block-end: 6px;
}

.page-home .region__facts dd {
  font-size: clamp(20px, 2.6vw, 26px);
  color: var(--lime);
  letter-spacing: -0.01em;
}

.page-home .region__meta {
  font-size: 13.5px;
  color: var(--gray);
  line-height: 1.9;
}

/* ============ 坐标索引 ============ */
.page-home .coord {
  padding-block: clamp(48px, 8vw, 96px) 0;
}

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

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

.page-home .coord__list a {
  display: grid;
  grid-template-columns: 46px 1fr;
  grid-template-areas:
    "code name"
    "code use";
  gap: 2px 14px;
  padding: 14px 4px;
  text-decoration: none;
  transition: background-color 0.24s var(--ease), padding-inline-start 0.24s var(--ease);
}

.page-home .coord__list a:hover,
.page-home .coord__list a:focus-visible {
  background: rgba(198, 255, 61, 0.08);
  padding-inline-start: 12px;
}

.page-home .coord__list a:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
}

.page-home .coord__code {
  grid-area: code;
  align-self: start;
  padding-block-start: 4px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--lime);
}

.page-home .coord__name {
  grid-area: name;
  font-family: var(--font-head);
  font-weight: 300;
  font-size: 21px;
  line-height: 1.2;
}

.page-home .coord__use {
  grid-area: use;
  font-size: 13px;
  color: var(--gray);
  line-height: 1.6;
}

.page-home .coord__cta {
  margin-block-start: clamp(28px, 4vw, 44px);
}

.page-home .coord__cta .btn {
  display: inline-block;
}

/* ============ 响应式 ============ */
@media (min-width: 720px) {
  .page-home .topo__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 clamp(18px, 2.4vw, 30px);
  }

  .page-home .topo__item {
    padding-inline-start: 0;
    border-left: 0;
    border-top-width: 2px;
  }

  .page-home .tl {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0 clamp(16px, 2vw, 26px);
  }

  .page-home .tl__item {
    padding-inline-start: 0;
    padding-block-start: clamp(24px, 3vw, 34px);
    border-top-width: 2px;
  }

  .page-home .tl__item::before {
    display: none;
  }

  .page-home .tl__dot {
    left: 0;
    top: -5px;
  }

  .page-home .coord__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(20px, 3vw, 40px);
  }
}

@media (min-width: 960px) {
  .page-home .hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-home .hero__art {
    align-self: stretch;
  }

  .page-home .hero__art img {
    height: 100%;
  }

  .page-home .version__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 6fr) minmax(0, 3fr);
    align-items: start;
  }

  .page-home .region {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: end;
  }

  .page-home .region__media {
    height: 100%;
  }

  .page-home .region__media img {
    height: 100%;
    object-fit: cover;
  }

  .page-home .region__media::after {
    background: linear-gradient(90deg, rgba(10, 42, 32, 0.5) 0%, rgba(10, 42, 32, 0.95) 70%);
  }

  .page-home .region__body {
    margin-block-start: 0;
    padding: clamp(34px, 4vw, 60px);
  }

  .page-home .coord__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-home .coord__list a {
    grid-template-columns: 1fr;
    grid-template-areas:
      "code"
      "name"
      "use";
    gap: 6px;
    padding: 18px 4px 22px;
    border-left: 1px solid var(--line-soft);
    padding-inline-start: 16px;
  }

  .page-home .coord__list li:first-child a {
    border-left: 0;
    padding-inline-start: 4px;
  }

  .page-home .coord__list a:hover,
  .page-home .coord__list a:focus-visible {
    padding-inline-start: 22px;
  }

  .page-home .coord__list li:first-child a:hover,
  .page-home .coord__list li:first-child a:focus-visible {
    padding-inline-start: 4px;
  }

  .page-home .coord__code {
    padding-block-start: 0;
  }
}