.page-home {
  position: relative;
  isolation: isolate;
  overflow-x: clip;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
  padding-bottom: clamp(2.5rem, 7vw, 5rem);
}

.page-home::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(157, 176, 191, .08) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(157, 176, 191, .08) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, .45) 45%, transparent 88%);
  mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, .45) 45%, transparent 88%);
}

.page-home::after {
  content: "";
  position: absolute;
  top: -20vw;
  right: -14vw;
  width: 62vw;
  height: 62vw;
  max-width: 760px;
  max-height: 760px;
  border-radius: 50%;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(circle, rgba(215, 38, 61, .16), transparent 66%);
  filter: blur(12px);
}

.page-home > * {
  position: relative;
  z-index: 1;
}

.page-home section[id] {
  scroll-margin-top: 96px;
}

/* ---------- 页面上下文条 ---------- */

.home-ctx {
  padding-block: clamp(.85rem, 2vw, 1.35rem) 0;
}

.home-ctx__in {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .5rem 1.25rem;
  padding-bottom: .8rem;
  border-bottom: 1px solid var(--line);
}

.home-ctx__path {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--mist);
}

.home-ctx__brand {
  color: var(--paper);
}

.home-ctx__sep {
  color: var(--red);
}

.home-ctx__meta {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--mist);
}

.home-ctx__meta-sep {
  color: var(--slate);
}

/* ---------- 首屏 ---------- */

.home-hero {
  padding-block: clamp(1.6rem, 4.5vw, 3.2rem) clamp(2.4rem, 6vw, 4rem);
}

.home-hero__shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem, 4vw, 2.6rem);
  align-items: start;
}

.home-hero__title {
  margin: .55rem 0 0;
  font-size: clamp(2.6rem, 8.6vw, 5.1rem);
  line-height: .94;
  letter-spacing: -.035em;
  font-weight: 900;
}

.home-hero__title-thin {
  display: block;
  font-size: .5em;
  font-weight: 300;
  line-height: 1.15;
  letter-spacing: -.005em;
  color: var(--mist);
  margin-bottom: .12em;
}

.home-hero__title-heavy {
  display: block;
  color: var(--paper);
}

.home-hero__claim {
  margin: .95rem 0 0;
  font-size: clamp(.98rem, 2.3vw, 1.22rem);
  font-weight: 500;
  line-height: 1.5;
  color: var(--amber);
}

.home-hero__lede {
  margin: 1rem 0 0;
  max-width: 56ch;
  font-size: clamp(.93rem, 1.9vw, 1.04rem);
  line-height: 1.85;
  color: var(--mist);
}

.home-hero__index {
  margin: clamp(1.5rem, 3.5vw, 2.1rem) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--line);
}

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

.home-hero__index a {
  display: flex;
  align-items: center;
  gap: .8rem;
  min-height: 48px;
  padding: .5rem .2rem;
  color: var(--paper);
  text-decoration: none;
  font-size: .95rem;
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.home-hero__index a .mono {
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--red);
  min-width: 1.6em;
}

.home-hero__index a:hover,
.home-hero__index a:focus-visible {
  color: var(--amber);
  padding-left: .55rem;
}

/* 首屏仪表板卡 */

.home-hero__panel {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--ink-2);
  box-shadow: 0 28px 64px -44px rgba(0, 0, 0, .95);
}

.home-hero__panel-media {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.home-hero__panel-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .3;
}

.home-hero__panel-body {
  position: relative;
  z-index: 1;
  padding: clamp(1.15rem, 3vw, 1.75rem);
  background: linear-gradient(158deg, rgba(10, 26, 42, .74), rgba(10, 26, 42, .93));
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.home-hero__panel-cap {
  margin: 0;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--amber);
}

.home-hero__panel-title {
  margin: .55rem 0 1rem;
  font-size: clamp(1.12rem, 2.6vw, 1.38rem);
  font-weight: 700;
  line-height: 1.35;
  color: var(--paper);
}

.home-meter {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .2rem;
}

.home-meter__link {
  display: grid;
  grid-template-columns: 20px 1fr auto;
  grid-template-areas:
    "icon label val"
    "icon track track";
  align-items: center;
  gap: .35rem .65rem;
  min-height: 48px;
  padding: .55rem .3rem;
  color: var(--paper);
  text-decoration: none;
  border-top: 1px solid var(--line);
  transition: background var(--dur) var(--ease);
}

.home-meter__link:hover,
.home-meter__link:focus-visible {
  background: rgba(227, 169, 63, .08);
}

.home-meter__icon {
  grid-area: icon;
  display: inline-flex;
  color: var(--mist);
}

.home-meter__label {
  grid-area: label;
  font-size: .95rem;
  font-weight: 500;
}

.home-meter__val {
  grid-area: val;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--amber);
}

.home-meter__track {
  grid-area: track;
  display: block;
  height: 3px;
  border-radius: 2px;
  background: rgba(157, 176, 191, .18);
  overflow: hidden;
}

.home-meter__bar {
  display: block;
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--red), var(--amber));
}

.home-meter li:nth-child(1) .home-meter__bar { width: 100%; }
.home-meter li:nth-child(2) .home-meter__bar { width: 71%; }
.home-meter li:nth-child(3) .home-meter__bar { width: 86%; }

.home-hero__panel-btn {
  margin-top: 1.15rem;
  width: 100%;
  justify-content: center;
}

/* ---------- 区块公共 ---------- */

.home-stack,
.home-chg,
.home-path,
.home-quick {
  padding-block: clamp(2.4rem, 6.5vw, 4.4rem);
}

.home-stack,
.home-chg,
.home-path {
  border-top: 1px solid var(--line);
}

.home-stack__head,
.home-chg__head,
.home-path__head {
  max-width: 68ch;
  margin-bottom: clamp(1.4rem, 3.5vw, 2.2rem);
}

.home-stack__title,
.home-chg__title,
.home-path__title {
  margin: .5rem 0 0;
  font-size: clamp(1.5rem, 4vw, 2.35rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -.012em;
  color: var(--paper);
}

.home-stack__lede,
.home-chg__lede,
.home-path__lede {
  margin: .9rem 0 0;
  max-width: 62ch;
  font-size: clamp(.92rem, 1.8vw, 1rem);
  line-height: 1.82;
  color: var(--mist);
}

/* ---------- 服务清单 ---------- */

.home-stack__tabs {
  margin-top: 1.2rem;
}

.home-stack .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  padding-bottom: .75rem;
  margin-bottom: 1.1rem;
  border-bottom: 1px solid var(--line);
}

.home-stack .tabs__btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  min-height: 44px;
  padding: .5rem .95rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--mist);
  font-family: var(--font-sans);
  font-size: .92rem;
  font-weight: 500;
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.home-stack .tabs__btn .mono {
  font-size: .76rem;
  letter-spacing: .08em;
  color: var(--red);
}

.home-stack .tabs__btn:hover {
  color: var(--paper);
  border-color: var(--line-strong);
}

.home-stack .tabs__btn[aria-selected="true"] {
  color: var(--paper);
  border-color: var(--line-red);
  background: rgba(215, 38, 61, .13);
}

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

.home-stack .tabs__panel:focus-visible {
  outline: none;
}

.home-stack__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
}

.home-stack__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .2rem .85rem;
  padding: .85rem .2rem;
  border-top: 1px solid var(--line);
}

.home-stack__item:first-child {
  border-top-color: var(--line-strong);
}

.home-stack__no {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--amber);
  padding-top: .22rem;
}

.home-stack__name {
  display: block;
  font-size: .97rem;
  font-weight: 500;
  line-height: 1.55;
  color: var(--paper);
}

.home-stack__desc {
  display: block;
  margin-top: .28rem;
  font-size: .86rem;
  line-height: 1.72;
  color: var(--mist);
}

.home-stack__foot {
  margin: 1.3rem 0 0;
}

/* ---------- 抽象图 ---------- */

.home-shot {
  margin: 0;
}

.home-shot img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--ink-2);
}

.home-shot figcaption {
  margin-top: .65rem;
  font-family: var(--font-mono);
  font-size: .71rem;
  letter-spacing: .08em;
  line-height: 1.6;
  color: var(--mist);
}

.home-stack__figure {
  margin-top: clamp(1.6rem, 4vw, 2.5rem);
}

.home-path__figure {
  margin-top: clamp(1.6rem, 4vw, 2.4rem);
}

/* ---------- 维护时间轴 ---------- */

.home-chg__track {
  position: relative;
  overflow: hidden;
  padding: clamp(1.15rem, 3vw, 1.9rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-2);
}

.home-chg__track-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.home-chg__track-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .22;
}

.home-chg__nodes {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.15rem;
}

.home-chg__node {
  position: relative;
  padding-left: 1.6rem;
  border-radius: var(--radius-sm);
  transition: color var(--dur) var(--ease);
}

.home-chg__node:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 4px;
}

.home-chg__dot {
  position: absolute;
  left: 0;
  top: .35rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(227, 169, 63, .16);
}

.home-chg__when {
  display: block;
  font-size: .71rem;
  letter-spacing: .12em;
  color: var(--red-soft);
}

.home-chg__what {
  margin: .35rem 0 0;
  font-size: .98rem;
  font-weight: 500;
  line-height: 1.5;
  color: var(--paper);
}

.home-chg__note {
  margin: .4rem 0 0;
  font-size: .84rem;
  line-height: 1.7;
  color: var(--mist);
  transition: color var(--dur) var(--ease);
}

.home-chg__node:hover .home-chg__note,
.home-chg__node:focus-visible .home-chg__note {
  color: var(--paper);
}

.home-chg__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .8rem 1.3rem;
  margin: clamp(1.2rem, 3vw, 1.7rem) 0 0;
}

.home-chg__foot .mono {
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--mist);
}

/* ---------- 双端路径 ---------- */

.home-path__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1rem, 2.5vw, 1.5rem);
}

.home-path__card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .7rem;
  padding: clamp(1.2rem, 3vw, 1.8rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(155deg, rgba(18, 41, 61, .92), rgba(10, 26, 42, .96));
}

.home-path__card::before {
  content: "";
  position: absolute;
  top: 0;
  left: clamp(1.2rem, 3vw, 1.8rem);
  width: 54px;
  height: 2px;
  border-radius: 2px;
  background: var(--amber);
}

.home-path__card--ios {
  border-color: var(--line-red);
}

.home-path__card--ios::before {
  background: var(--red);
}

.home-path__no {
  margin: 0;
  font-size: .71rem;
  letter-spacing: .14em;
  color: var(--amber);
}

.home-path__card--ios .home-path__no {
  color: var(--red-soft);
}

.home-path__name {
  margin: 0;
  font-size: clamp(1.3rem, 3.4vw, 1.7rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--paper);
}

.home-path__scene {
  margin: 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--mist);
}

.home-path__steps {
  margin: .2rem 0 .4rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .55rem;
}

.home-path__steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .6rem;
  font-size: .9rem;
  line-height: 1.68;
  color: var(--paper);
}

.home-path__steps .mono {
  font-size: .73rem;
  padding-top: .2rem;
  color: var(--amber);
}

.home-path__card--ios .home-path__steps .mono {
  color: var(--clay);
}

.home-path__card .btn {
  align-self: flex-start;
  margin-top: auto;
}

/* ---------- 老用户通道 ---------- */

.home-quick__bar {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.2rem;
  padding: clamp(1.3rem, 3.5vw, 2rem);
  border: 1px solid var(--line-red);
  border-radius: var(--radius);
  background:
    linear-gradient(118deg, rgba(215, 38, 61, .18), rgba(10, 26, 42, .9) 55%, rgba(227, 169, 63, .12));
}

.home-quick__title {
  margin: .5rem 0 0;
  font-size: clamp(1.45rem, 4vw, 2.05rem);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -.01em;
  color: var(--paper);
}

.home-quick__lede {
  margin: .8rem 0 0;
  max-width: 52ch;
  font-size: .93rem;
  line-height: 1.82;
  color: var(--mist);
}

.home-quick__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
}

.home-quick__more {
  display: flex;
  flex-wrap: wrap;
  gap: .3rem 1.6rem;
  margin-top: .9rem;
}

.home-quick__more-link {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  min-height: 44px;
  padding: .2rem 0;
  font-size: .89rem;
  color: var(--mist);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.home-quick__more-link .mono {
  color: var(--red-soft);
}

.home-quick__more-link:hover,
.home-quick__more-link:focus-visible {
  color: var(--amber);
}

/* ---------- 断点 ---------- */

@media (min-width: 560px) {
  .home-hero__index {
    grid-template-columns: 1fr 1fr;
    column-gap: clamp(1rem, 3vw, 2rem);
  }
}

@media (min-width: 720px) {
  .home-stack__list {
    grid-template-columns: 1fr 1fr;
    column-gap: clamp(1.2rem, 3vw, 2.4rem);
  }

  .home-stack__item:nth-child(2) {
    border-top-color: var(--line-strong);
  }
}

@media (min-width: 820px) {
  .home-path__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 860px) {
  .home-chg__nodes {
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
  }

  .home-chg__nodes::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 11px;
    height: 1px;
    background: linear-gradient(90deg, rgba(215, 38, 61, .55), rgba(227, 169, 63, .55));
  }

  .home-chg__node {
    padding: 1.6rem .95rem 0;
  }

  .home-chg__dot {
    top: .95rem;
    left: .95rem;
  }

  .home-quick__bar {
    grid-template-columns: 1.5fr auto;
    align-items: center;
    gap: 2rem;
  }

  .home-quick__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 960px) {
  .home-hero__shell {
    grid-template-columns: 7fr 5fr;
    gap: clamp(1.5rem, 3vw, 2.8rem);
  }

  .home-hero__panel-body {
    padding: clamp(1.4rem, 2.2vw, 1.9rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home * {
    transition-duration: .01ms !important;
  }
}
<<<END>>>