.page-home {
  --home-hair: 1px solid var(--line-700);
  background: var(--ink-950);
  color: var(--paper-100);
}

/* ---------- 首屏框景 ---------- */
.page-home .hero {
  position: relative;
  padding: 44px 0 0;
  overflow: hidden;
  border-bottom: var(--home-hair);
  background-image: repeating-linear-gradient(
    0deg,
    rgba(143, 166, 194, 0.06) 0,
    rgba(143, 166, 194, 0.06) 1px,
    transparent 1px,
    transparent 9px
  );
}

.page-home .hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -12%;
  width: 72%;
  height: 150%;
  background: radial-gradient(circle at 68% 32%, rgba(45, 125, 255, 0.22), transparent 64%);
  pointer-events: none;
}

.page-home .hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 34px;
  align-items: center;
}

.page-home .hero__eyebrow {
  margin: 0;
  color: var(--amber-500);
}

.page-home .hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(36px, 7.6vw, 74px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: #fff;
}

.page-home .hero__lede {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.78;
  color: var(--steel-400);
}

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

.page-home .hero__main {
  min-height: 52px;
  padding-inline: 24px;
  font-size: 16px;
  letter-spacing: 0.01em;
}

.page-home .hero__main:focus-visible {
  outline: 2px solid var(--amber-500);
  outline-offset: 3px;
}

.page-home .hero__frame {
  position: relative;
  margin: 0;
  padding: 10px 10px 14px;
  border: var(--home-hair);
  background: linear-gradient(150deg, rgba(45, 125, 255, 0.18), rgba(4, 11, 20, 0.45));
  clip-path: polygon(0 0, 100% 0, 100% 100%, 11% 100%);
}

.page-home .hero__frame::before {
  content: "";
  position: absolute;
  top: 20px;
  left: 20px;
  width: 26px;
  height: 26px;
  border-top: 2px solid var(--amber-500);
  border-left: 2px solid var(--amber-500);
}

.page-home .hero__frame::after {
  content: "";
  position: absolute;
  right: 24px;
  bottom: 30px;
  width: 26px;
  height: 26px;
  border-right: 2px solid var(--blue-500);
  border-bottom: 2px solid var(--blue-500);
}

.page-home .hero__frame img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border: var(--home-hair);
  background: var(--ink-900);
}

.page-home .hero__cap {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--steel-400);
}

/* ---------- 首屏数据带 ---------- */
.page-home .databan {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 40px 0 0;
  padding: 0;
  background: var(--line-700);
  border: var(--home-hair);
  border-bottom: none;
}

.page-home .databan__cell {
  background: var(--ink-900);
  padding: 14px 16px 16px;
}

.page-home .databan dt {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--steel-400);
}

.page-home .databan dd {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--paper-100);
}

/* ---------- 说明区 ---------- */
.page-home .note {
  padding: 64px 0;
  border-bottom: var(--home-hair);
}

.page-home .note__grid {
  display: grid;
  gap: 26px;
}

.page-home .note__lead .label {
  display: block;
  color: var(--blue-500);
}

.page-home .note__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(25px, 3.4vw, 38px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: #fff;
}

.page-home .note__body p {
  margin: 0 0 16px;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.82;
  color: var(--steel-400);
}

.page-home .note__body p:last-child {
  margin-bottom: 0;
}

/* ---------- 通用章节头 ---------- */
.page-home .sec-head {
  max-width: 42em;
}

.page-home .sec-head .label {
  display: block;
  color: var(--amber-500);
}

.page-home .sec-title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 4vw, 44px);
  line-height: 1.14;
  letter-spacing: -0.015em;
  color: #fff;
}

.page-home .sec-lede {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--steel-400);
}

/* ---------- 登录三步 ---------- */
.page-home .login {
  padding: 64px 0;
  border-bottom: var(--home-hair);
}

.page-home .login__grid {
  display: grid;
  gap: 32px;
  margin-top: 36px;
}

.page-home .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-700);
  border-top: var(--home-hair);
  border-bottom: var(--home-hair);
}

.page-home .steps__item {
  position: relative;
  padding: 20px 20px 22px;
  background: var(--ink-950);
  border-left: 2px solid transparent;
  transition: border-color var(--ease), background-color var(--ease);
}

.page-home .steps__item:hover,
.page-home .steps__item:focus-within {
  border-left-color: var(--amber-500);
  background: var(--ink-900);
}

.page-home .steps__idx {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--amber-500);
}

.page-home .steps__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.36;
  color: #fff;
}

.page-home .steps__desc {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.76;
  color: var(--steel-400);
}

.page-home .login__figure {
  margin: 0;
}

/* ---------- 案例档案 ---------- */
.page-home .cases {
  padding: 64px 0;
  border-bottom: var(--home-hair);
  background:
    linear-gradient(200deg, rgba(45, 125, 255, 0.1), transparent 46%),
    var(--ink-900);
}

.page-home .cases__grid {
  display: grid;
  gap: 32px;
  align-items: center;
}

.page-home .cases__figure {
  margin: 0;
}

.page-home .cases__body .label {
  display: block;
  color: var(--amber-500);
}

.page-home .cases__text {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.82;
  color: var(--steel-400);
}

.page-home .tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
}

.page-home .tags li {
  padding: 5px 10px;
  border: var(--home-hair);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--steel-400);
  transition: color var(--ease), border-color var(--ease);
}

.page-home .tags li:hover {
  border-color: var(--amber-500);
  color: var(--paper-100);
}

.page-home .cases__more {
  margin: 26px 0 0;
}

/* ---------- 下载闸口 ---------- */
.page-home .gate {
  position: relative;
  padding: 64px 0;
  border-bottom: var(--home-hair);
}

.page-home .gate::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 140px;
  background: linear-gradient(180deg, rgba(255, 158, 44, 0.12), transparent);
  clip-path: polygon(0 0, 100% 0, 100% 34%, 0 100%);
  pointer-events: none;
}

.page-home .gate__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 32px;
}

.page-home .gate__figure {
  margin: 0;
}

.page-home .gate__body .label {
  display: block;
  color: var(--amber-500);
}

.page-home .gate__text {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.82;
  color: var(--steel-400);
}

.page-home .versions {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  border-top: var(--home-hair);
}

.page-home .versions li {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: var(--home-hair);
}

.page-home .versions__name {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--amber-500);
}

.page-home .versions__desc {
  font-size: 15px;
  line-height: 1.7;
  color: var(--steel-400);
}

.page-home .gate__more {
  margin: 26px 0 0;
}

/* ---------- 更新节奏 ---------- */
.page-home .cadence {
  padding: 64px 0;
  border-bottom: var(--home-hair);
  background: var(--ink-900);
}

.page-home .cadence__list {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  border-top: var(--home-hair);
}

.page-home .cadence__item {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: var(--home-hair);
}

.page-home .cadence__num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--blue-500);
}

.page-home .cadence__label {
  font-size: 15px;
  line-height: 1.7;
  color: var(--steel-400);
}

/* ---------- 服务台 ---------- */
.page-home .help {
  padding: 64px 0 72px;
}

.page-home .help__grid {
  display: grid;
  gap: 28px;
}

.page-home .help__body .label {
  display: block;
  color: var(--blue-500);
}

.page-home .help__text {
  margin: 16px 0 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.82;
  color: var(--steel-400);
}

.page-home .help__links {
  border-top: var(--home-hair);
}

.page-home .helplink {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  border-bottom: var(--home-hair);
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--paper-100);
  text-decoration: none;
  transition: color var(--ease);
}

.page-home .helplink::after {
  content: "→";
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--amber-500);
  transition: transform var(--ease);
}

.page-home .helplink:hover,
.page-home .helplink:focus-visible {
  color: var(--blue-500);
}

.page-home .helplink:hover::after,
.page-home .helplink:focus-visible::after {
  transform: translateX(4px);
}

.page-home .helplink:focus-visible {
  outline: 2px solid var(--amber-500);
  outline-offset: 2px;
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-home .databan {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-home .cadence__item {
    grid-template-columns: 180px minmax(0, 1fr);
    align-items: baseline;
    gap: 20px;
  }
}

@media (min-width: 900px) {
  .page-home .hero {
    padding-top: 64px;
  }

  .page-home .hero__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 48px;
  }

  .page-home .hero__frame {
    transform: translateY(4px);
  }

  .page-home .note {
    padding: 96px 0;
  }

  .page-home .note__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: 56px;
    align-items: start;
  }

  .page-home .login,
  .page-home .cases,
  .page-home .gate,
  .page-home .cadence {
    padding: 96px 0;
  }

  .page-home .login__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }

  .page-home .cases__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 52px;
  }

  .page-home .gate__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 52px;
    align-items: start;
  }

  .page-home .versions li {
    grid-template-columns: 190px minmax(0, 1fr);
    align-items: baseline;
    gap: 20px;
  }

  .page-home .help {
    padding: 96px 0 104px;
  }

  .page-home .help__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 56px;
    align-items: start;
  }

  .page-home .help__links {
    border-top: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .steps__item,
  .page-home .helplink,
  .page-home .helplink::after,
  .page-home .tags li {
    transition: none;
  }

  .page-home .helplink:hover::after,
  .page-home .helplink:focus-visible::after {
    transform: none;
  }
}
<<<END>>>