.page-home {
  --home-cut: 20px;
  --home-band: rgba(255, 106, 31, 0.09);
  position: relative;
  isolation: isolate;
  overflow-x: clip;
  background: var(--void);
  color: var(--ice);
}

.page-home::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(51, 214, 208, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(51, 214, 208, 0.055) 1px, transparent 1px);
  background-size: 64px 64px;
}

/* ---------- 首屏 ---------- */
.heat-hero {
  position: relative;
  border-top: 1px solid var(--line);
}

.heat-hero__inner {
  position: relative;
  display: grid;
  gap: 26px;
  padding-block: clamp(26px, 5vw, 54px) clamp(40px, 6vw, 76px);
}

.heat-hero__inner::before {
  content: "";
  position: absolute;
  top: -14%;
  right: -34%;
  width: min(680px, 108vw);
  aspect-ratio: 1;
  border-radius: 50%;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 50%, rgba(255, 106, 31, 0.36) 0%, rgba(226, 38, 59, 0.18) 38%, rgba(11, 13, 16, 0) 68%);
  animation: home-breathe 6s ease-in-out infinite;
}

.heat-hero__inner:hover::before {
  animation-duration: 3s;
}

@keyframes home-breathe {
  0%, 100% { transform: scale(1); opacity: 0.82; }
  50% { transform: scale(1.08); opacity: 1; }
}

.heat-hero__spine {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.26em;
  color: var(--ember);
  border-top: 2px solid var(--lava);
  padding-top: 10px;
}

.heat-hero__coord {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.heat-hero__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6vw, 54px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--ice);
}

.heat-hero__title em {
  font-style: normal;
  color: var(--lava);
  text-shadow: 0 0 26px rgba(255, 106, 31, 0.42);
}

.heat-hero__lede {
  margin: 0 0 22px;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.82;
  color: var(--ash);
}

.heat-hero__act {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.heat-hero__art {
  margin: 0;
  position: relative;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--line-warm);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--home-cut)), calc(100% - var(--home-cut)) 100%, 0 100%);
}

.heat-hero__art img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-width: 100%;
}

/* 数据台 */
.stat-dial {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.stat {
  padding: 16px 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.stat:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px var(--lava), 0 10px 26px rgba(255, 106, 31, 0.16);
}

.stat--pulse {
  background-image: linear-gradient(160deg, rgba(255, 106, 31, 0.16), rgba(22, 25, 31, 0) 62%);
}

.stat__label {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.stat__val {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(28px, 6vw, 40px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--ice);
}

.stat__val--word {
  font-size: clamp(20px, 4.4vw, 26px);
  color: var(--ember);
  letter-spacing: 0.02em;
}

.stat__unit {
  margin-left: 4px;
  font-size: 13px;
  font-weight: 400;
  color: var(--ash);
}

.stat__more {
  margin-top: 6px;
  border-top: 1px dashed var(--line);
  padding-top: 8px;
}

.stat__more summary {
  list-style: none;
  cursor: pointer;
  font-size: 12px;
  color: var(--cyan);
  letter-spacing: 0.06em;
}

.stat__more summary::-webkit-details-marker {
  display: none;
}

.stat__more summary::before {
  content: "+ ";
  font-family: var(--font-mono);
}

.stat__more[open] summary::before {
  content: "− ";
}

.stat__more p {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--ash);
}

/* ---------- 城市坐标导航台 ---------- */
.coords {
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(22, 25, 31, 0.72), rgba(11, 13, 16, 0));
}

.coords__inner {
  display: grid;
  gap: 30px;
  padding-block: clamp(40px, 6vw, 76px);
}

.coords__title {
  margin: 10px 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 4.4vw, 38px);
  line-height: 1.24;
  color: var(--ice);
}

.coords__lede {
  margin: 0 0 16px;
  max-width: 50ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--ash);
}

.coords__jump {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--lava);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.12s ease;
}

.coords__jump:hover,
.coords__jump:focus-visible {
  border-bottom-color: var(--lava);
}

.coords__body {
  display: grid;
  gap: 26px;
}

.cat-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.cat-list__item {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 10px 12px;
  font-size: 14px;
  color: var(--ice);
  text-decoration: none;
  background: var(--slate);
  border-left: 2px solid var(--line);
  transition: border-color 0.14s ease, background 0.14s ease, color 0.14s ease;
}

.cat-list__item:hover,
.cat-list__item:focus-visible {
  border-left-color: var(--lava);
  background: rgba(255, 106, 31, 0.11);
  color: var(--ember);
}

.cat-list__idx {
  font-size: 11px;
  color: var(--cyan);
}

.coord-map-wrap {
  position: relative;
  padding: 10px;
  border: 1px solid var(--line);
  background: radial-gradient(circle at 50% 50%, rgba(255, 106, 31, 0.14), rgba(11, 13, 16, 0) 66%);
}

.coord-map {
  display: block;
  width: 100%;
  height: auto;
}

.coord-map__ring {
  fill: none;
}

.coord-map__ring--out {
  stroke: rgba(51, 214, 208, 0.22);
  stroke-dasharray: 3 8;
}

.coord-map__ring--in {
  stroke: rgba(51, 214, 208, 0.14);
}

.coord-map__spoke {
  stroke: rgba(51, 214, 208, 0.2);
  stroke-width: 1;
}

.coord-map__core {
  fill: var(--lava);
}

.coord-map__core-halo {
  fill: none;
  stroke: rgba(255, 106, 31, 0.45);
  stroke-width: 1.5;
  stroke-dasharray: 4 6;
}

.coord-map__node circle {
  fill: var(--ember);
  stroke: rgba(11, 13, 16, 0.9);
  stroke-width: 2;
}

.coord-map__node:hover circle {
  fill: var(--lava);
}

.coord-map__label {
  font-family: var(--font-body);
  font-size: 17px;
  fill: var(--ice);
  letter-spacing: 0.06em;
}

.coord-map__legend {
  margin: 6px 0 0;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ash);
  text-align: right;
}

/* ---------- 价格表 ---------- */
.pricing {
  border-top: 1px solid var(--line);
}

.pricing__inner {
  display: grid;
  gap: 28px;
  padding-block: clamp(40px, 6vw, 76px);
}

.pricing__art {
  margin: 0;
  order: 2;
  border: 1px solid var(--line-warm);
  clip-path: polygon(0 0, 100% 0, 100% 100%, var(--home-cut) 100%, 0 calc(100% - var(--home-cut)));
  overflow: hidden;
}

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

.pricing__cap {
  margin: 0;
  padding: 10px 14px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ember);
  background: var(--slate);
  border-top: 1px solid var(--line-warm);
}

.pricing__copy {
  order: 1;
}

.pricing__title {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 4.2vw, 34px);
  line-height: 1.28;
  color: var(--ice);
}

.pricing__copy > p {
  margin: 0 0 20px;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--ash);
}

.tier-list {
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--line);
}

.tier-list__item {
  display: grid;
  grid-template-columns: 42px 84px minmax(0, 1fr);
  align-items: baseline;
  gap: 10px;
  padding: 12px 14px;
  background: var(--slate);
  transition: background 0.14s ease;
}

.tier-list__item:hover {
  background: rgba(255, 106, 31, 0.09);
}

.tier-list__tag {
  font-size: 11px;
  color: var(--lava);
  letter-spacing: 0.1em;
}

.tier-list__name {
  font-size: 14px;
  font-weight: 700;
  color: var(--ice);
}

.tier-list__desc {
  font-size: 13px;
  line-height: 1.68;
  color: var(--ash);
}

/* ---------- 三步上手 ---------- */
.steps {
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(22, 25, 31, 0.7), rgba(11, 13, 16, 0));
}

.steps__inner {
  display: grid;
  gap: 26px;
  padding-block: clamp(40px, 6vw, 76px);
}

.steps__title {
  margin: 10px 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 4.4vw, 38px);
  line-height: 1.24;
  color: var(--ice);
}

.steps__lede {
  margin: 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--ash);
}

.steps__track {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 18px;
}

.steps__item {
  position: relative;
  padding: 18px 0 0;
  border-top: 1px solid var(--line);
  background-image: linear-gradient(90deg, rgba(255, 106, 31, 0.5), rgba(255, 106, 31, 0) 42%);
  background-repeat: no-repeat;
  background-size: 100% 2px;
  background-position: top left;
}

.steps__num {
  display: block;
  font-size: 26px;
  font-weight: 700;
  color: var(--lava);
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}

.steps__name {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ice);
}

.steps__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--ash);
}

.steps__foot {
  display: grid;
  gap: 20px;
}

.steps__art {
  margin: 0;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--home-cut)), calc(100% - var(--home-cut)) 100%, 0 100%);
}

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

.steps__links p {
  margin: 0 0 10px;
  font-size: 13px;
  color: var(--ash);
}

.steps__link {
  display: block;
  padding: 10px 0;
  font-size: 14px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color 0.12s ease, border-color 0.12s ease;
}

.steps__link:hover,
.steps__link:focus-visible {
  color: var(--lava);
  border-bottom-color: var(--lava);
}

/* ---------- 维护节奏 ---------- */
.pulse {
  border-block: 1px solid var(--line-warm);
  background:
    linear-gradient(104deg, rgba(255, 106, 31, 0.2), rgba(226, 38, 59, 0.1) 52%, rgba(51, 214, 208, 0.08));
}

.pulse__inner {
  display: grid;
  gap: 26px;
  padding-block: clamp(36px, 5.5vw, 64px);
}

.pulse__title {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 4.2vw, 34px);
  line-height: 1.26;
  color: var(--ice);
}

.pulse__lede {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.82;
  color: rgba(232, 241, 244, 0.82);
}

.pulse__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
}

.pulse__stat {
  padding: 14px 16px;
  background: rgba(11, 13, 16, 0.62);
  border-left: 2px solid var(--lava);
}

.pulse__stat dt {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  margin-bottom: 6px;
}

.pulse__stat dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(24px, 5vw, 34px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--ice);
}

.pulse__stat dd span {
  margin-left: 4px;
  font-size: 12px;
  font-weight: 400;
  color: var(--ash);
}

.pulse__cta {
  justify-self: start;
}

/* ---------- 快捷索引 ---------- */
.quick {
  border-bottom: 1px solid var(--line);
}

.quick__inner {
  display: grid;
  gap: 24px;
  padding-block: clamp(40px, 6vw, 76px);
}

.quick__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 4.4vw, 36px);
  line-height: 1.24;
  color: var(--ice);
}

.quick__grid {
  display: grid;
  gap: 1px;
  background: var(--line);
}

.quick__item {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  grid-template-areas:
    "num name"
    "num desc";
  align-items: baseline;
  gap: 2px 12px;
  padding: 18px 16px;
  background: var(--void);
  text-decoration: none;
  transition: background 0.16s ease;
}

.quick__item:hover,
.quick__item:focus-visible {
  background: var(--slate);
}

.quick__num {
  grid-area: num;
  font-size: 12px;
  color: var(--lava);
  letter-spacing: 0.08em;
}

.quick__name {
  grid-area: name;
  font-size: 18px;
  font-weight: 700;
  color: var(--ice);
}

.quick__item:hover .quick__name,
.quick__item:focus-visible .quick__name {
  color: var(--ember);
}

.quick__desc {
  grid-area: desc;
  font-size: 13px;
  line-height: 1.72;
  color: var(--ash);
  margin-top: 6px;
}

.quick__back {
  justify-self: start;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 4px;
  transition: color 0.12s ease, border-color 0.12s ease;
}

.quick__back:hover,
.quick__back:focus-visible {
  color: var(--lava);
  border-bottom-color: var(--lava);
}

/* ---------- 地域横幅 ---------- */
.province-band {
  position: relative;
  padding-top: clamp(30px, 5vw, 52px);
}

.province-band__title {
  margin: 0 auto 16px;
  padding-inline: 18px;
  max-width: 1180px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(16px, 2.4vw, 20px);
  letter-spacing: 0.06em;
  color: var(--ember);
}

.province-band img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  opacity: 0.85;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .stat-dial {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .stat:nth-child(2) {
    transform: translateY(14px);
  }

  .stat:nth-child(4) {
    transform: translateY(10px);
  }

  .stat:nth-child(2):hover,
  .stat:nth-child(4):hover {
    transform: translateY(11px);
  }

  .cat-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .quick__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pulse__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 820px) {
  .steps__track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .steps__foot {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: center;
    gap: 28px;
  }
}

@media (min-width: 900px) {
  .pricing__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    column-gap: 46px;
    align-items: center;
  }

  .pricing__art {
    order: 1;
  }

  .pricing__copy {
    order: 2;
  }

  .coords__body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
    gap: 30px;
  }

  .cat-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .coords__inner {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
    column-gap: 48px;
    align-items: start;
  }

  .coords__head {
    grid-column: 1;
  }

  .coords__body {
    grid-column: 2;
  }

  .quick__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .heat-hero__inner {
    grid-template-columns: 64px minmax(0, 1.05fr) minmax(0, 0.95fr);
    grid-template-areas:
      "spine copy art"
      "dial  dial dial";
    column-gap: 34px;
    row-gap: 46px;
    align-items: start;
  }

  .heat-hero__spine {
    grid-area: spine;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    border-top: 0;
    border-left: 2px solid var(--lava);
    padding: 0 0 0 12px;
    max-height: 320px;
    letter-spacing: 0.34em;
    font-size: 14px;
  }

  .heat-hero__copy {
    grid-area: copy;
  }

  .heat-hero__art {
    grid-area: art;
  }

  .stat-dial {
    grid-area: dial;
  }

  .heat-hero__inner::before {
    top: -24%;
    right: -18%;
    width: min(760px, 62vw);
  }
}

@media (prefers-reduced-motion: reduce) {
  .heat-hero__inner::before {
    animation: none;
  }

  .stat,
  .cat-list__item,
  .quick__item {
    transition: none;
  }

  .stat:hover,
  .stat:nth-child(2):hover,
  .stat:nth-child(4):hover {
    transform: none;
  }
}
<<<END>>>