.page-home {
  --home-cut: 18px;
  --home-rail-w: 188px;
  padding-bottom: var(--sp-7);
}

/* ---------- 布局骨架 ---------- */
.page-home .home-layout {
  display: grid;
  gap: var(--sp-4);
  align-items: start;
  padding-top: var(--sp-3);
}

@media (min-width: 1024px) {
  .page-home .home-layout {
    grid-template-columns: var(--home-rail-w) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 72px);
  }
}

.page-home .home-col {
  min-width: 0;
}

/* ---------- 左侧锚点带 ---------- */
.page-home .rail {
  display: none;
}

@media (min-width: 1024px) {
  .page-home .rail {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 32px);
    padding-left: var(--sp-2);
    border-left: 1px solid var(--ink-700);
  }

  .page-home .rail__label {
    margin: 0 0 var(--sp-2);
    font-family: var(--font-mono);
    font-size: var(--fs-12);
    letter-spacing: 0.16em;
    color: var(--ash);
  }

  .page-home .rail__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 2px;
  }

  .page-home .rail__link {
    display: flex;
    gap: var(--sp-1);
    align-items: baseline;
    padding: 6px 0;
    font-size: var(--fs-14);
    line-height: 1.5;
    color: var(--ash);
    text-decoration: none;
    transition: color 0.2s var(--ease);
  }

  .page-home .rail__link:hover {
    color: var(--paper);
  }

  .page-home .rail__link.is-active,
  .page-home .rail__link.is-active .rail__idx {
    color: var(--gold);
  }

  .page-home .rail__idx {
    font-size: var(--fs-12);
    color: var(--ink-600);
    transition: color 0.2s var(--ease);
  }
}

/* ---------- 首屏 ---------- */
.page-home .home-hero {
  display: grid;
  gap: var(--sp-4);
  padding-block: var(--sp-2) var(--sp-5);
}

@media (min-width: 900px) {
  .page-home .home-hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: var(--sp-5);
    align-items: center;
  }
}

.page-home .home-hero__title {
  margin: var(--sp-2) 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 1.15rem + 2.5vw, 2.5rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-home .home-hero__lede {
  margin: var(--sp-3) 0 0;
  max-width: 40ch;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--ash);
}

.page-home .home-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}

.page-home .home-hero__metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: var(--sp-4) 0 0;
  padding: 1px;
  background: var(--ink-700);
}

@media (min-width: 600px) {
  .page-home .home-hero__metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-home .home-metric {
  background: var(--ink-900);
  padding: var(--sp-2);
}

.page-home .home-metric__key {
  margin: 0;
  font-size: var(--fs-12);
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--ash);
}

.page-home .home-metric__val {
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-22);
  font-weight: 600;
  line-height: 1.2;
  color: var(--gold);
}

.page-home .home-hero__topo {
  position: relative;
  margin: 0;
  padding: var(--sp-3) var(--sp-3) var(--sp-2);
  background: linear-gradient(158deg, var(--ink-800) 0%, var(--ink-900) 72%);
  clip-path: polygon(0 var(--home-cut), var(--home-cut) 0, 100% 0, 100% 100%, 0 100%);
}

.page-home .home-hero__topo img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.page-home .home-hero__topo .media__caption {
  margin-top: var(--sp-2);
  padding-left: var(--sp-1);
  border-left: 1px solid var(--gold-deep);
  font-size: var(--fs-12);
  line-height: 1.65;
  color: var(--ash);
}

/* ---------- 章节通用 ---------- */
.page-home .home-col > .section {
  border-top: 1px solid var(--ink-700);
  padding-block: var(--sp-6);
}

.page-home .home-col > .home-hero + .section {
  border-top: 0;
}

.page-home .section__head {
  max-width: 64ch;
  margin-bottom: var(--sp-5);
}

.page-home .section__title {
  font-size: clamp(1.375rem, 1.05rem + 1.4vw, 1.75rem);
}

.page-home .home-inline-action {
  margin-top: var(--sp-4);
}

/* ---------- 栏目总览 ---------- */
.page-home .home-channels {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--ink-700);
  border: 1px solid var(--ink-700);
}

@media (min-width: 620px) {
  .page-home .home-channels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-home .home-channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-home .home-channel {
  position: relative;
  padding: var(--sp-3);
  background: var(--ink-900);
  transition: background 0.24s var(--ease);
}

.page-home .home-channel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), rgba(201, 162, 39, 0));
  transition: width 0.32s var(--ease);
}

.page-home .home-channel:hover {
  background: var(--ink-850);
}

.page-home .home-channel:hover::before {
  width: 72px;
}

.page-home .home-channel__idx {
  margin: 0;
  font-size: var(--fs-12);
  letter-spacing: 0.18em;
  color: var(--gold-deep);
}

.page-home .home-channel__title {
  margin: var(--sp-2) 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-18);
  line-height: 1.35;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-home .home-channel__text {
  margin: var(--sp-1) 0 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--ash);
}

.page-home .home-channel__meta {
  margin: var(--sp-3) 0 0;
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
  color: var(--celadon-soft);
}

.page-home .home-channel__link {
  display: inline-block;
  margin-top: var(--sp-2);
  font-size: var(--fs-14);
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease);
}

.page-home .home-channel__link:hover {
  border-bottom-color: var(--gold);
}

/* ---------- 三步上手 ---------- */
.page-home .home-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--sp-3);
}

@media (min-width: 780px) {
  .page-home .home-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-home .home-step {
  position: relative;
  padding: var(--sp-3);
  background: linear-gradient(180deg, var(--ink-800), var(--ink-850));
  border-left: 2px solid var(--celadon);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-home .home-step__idx {
  display: block;
  margin-bottom: var(--sp-1);
  font-size: var(--fs-12);
  letter-spacing: 0.18em;
  color: var(--celadon-soft);
}

.page-home .home-step__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-18);
  color: var(--paper);
}

.page-home .home-step__text {
  margin: var(--sp-1) 0 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--ash);
}

.page-home .home-steps__figure {
  margin: var(--sp-4) 0 0;
  padding: var(--sp-2);
  border: 1px solid var(--ink-700);
}

.page-home .home-steps__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1200 / 760;
  object-fit: cover;
}

/* ---------- 常用页面矩阵 ---------- */
.page-home .home-matrix {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--sp-2);
}

@media (min-width: 640px) {
  .page-home .home-matrix {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-home .home-matrix {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-home .home-save {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: var(--sp-3);
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  text-decoration: none;
  transition: border-color 0.24s var(--ease), background 0.24s var(--ease), transform 0.24s var(--ease);
}

.page-home .home-save:hover,
.page-home .home-save:focus-visible {
  border-color: var(--gold);
  background: var(--ink-850);
  transform: translateY(-3px);
}

.page-home .home-save::after {
  content: "→";
  position: absolute;
  right: var(--sp-3);
  top: var(--sp-3);
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  color: var(--ink-600);
  transition: color 0.24s var(--ease), transform 0.24s var(--ease);
}

.page-home .home-save:hover::after {
  color: var(--gold);
  transform: translateX(3px);
}

.page-home .home-save__cat {
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--celadon-soft);
}

.page-home .home-save__title {
  padding-right: var(--sp-3);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-16);
  line-height: 1.45;
  color: var(--paper);
}

.page-home .home-save__text {
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--ash);
}

.page-home .home-matrix__figure {
  margin: var(--sp-5) 0 0;
  border-top: 1px solid var(--ink-700);
  padding-top: var(--sp-3);
}

.page-home .home-matrix__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: clamp(180px, 26vw, 300px);
  object-fit: cover;
  opacity: 0.92;
}

/* ---------- 移动端入口 ---------- */
.page-home .home-mobile {
  display: grid;
  gap: var(--sp-4);
}

@media (min-width: 900px) {
  .page-home .home-mobile {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.55fr);
    gap: var(--sp-5);
    align-items: center;
  }
}

.page-home .home-mobile .section__head {
  margin-bottom: 0;
}

.page-home .home-mobile__body {
  max-width: 58ch;
}

.page-home .home-mobile__text {
  margin: var(--sp-3) 0 0;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--ash);
}

.page-home .home-mobile__list {
  list-style: none;
  margin: var(--sp-3) 0 0;
  padding: 0;
  display: grid;
  gap: var(--sp-1);
}

.page-home .home-mobile__list li {
  position: relative;
  padding-left: var(--sp-3);
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--ash);
}

.page-home .home-mobile__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 10px;
  height: 1px;
  background: var(--gold);
}

.page-home .home-mobile__figure {
  margin: 0;
  justify-self: center;
  width: 100%;
  max-width: 320px;
  padding: var(--sp-2);
  background: linear-gradient(160deg, var(--ink-800), var(--ink-900));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.page-home .home-mobile__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 900 / 1200;
  object-fit: cover;
}

/* ---------- 速度变化 ---------- */
.page-home .home-perf {
  display: grid;
  gap: 1px;
  padding: 1px;
  background: var(--ink-700);
}

@media (min-width: 640px) {
  .page-home .home-perf {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-home .home-perf__stat {
  background: var(--ink-900);
  padding: var(--sp-3);
}

.page-home .home-perf__num {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(1.75rem, 1.15rem + 2vw, 2.5rem);
  line-height: 1.1;
  color: var(--gold-bright);
}

.page-home .home-perf__num span {
  margin-left: 2px;
  font-size: var(--fs-16);
  color: var(--gold);
}

.page-home .home-perf__key {
  margin: var(--sp-1) 0 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--ash);
}

/* ---------- 更新节奏与联络 ---------- */
.page-home .home-cadence {
  display: grid;
  gap: var(--sp-3);
}

@media (min-width: 860px) {
  .page-home .home-cadence {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-home .home-contact-line {
  display: grid;
  gap: var(--sp-3);
  margin-top: var(--sp-4);
  padding: var(--sp-3);
  background: linear-gradient(120deg, var(--ink-800), var(--ink-900));
  border-left: 2px solid var(--gold);
}

@media (min-width: 760px) {
  .page-home .home-contact-line {
    grid-template-columns: repeat(3, minmax(0, 1fr)) auto;
    align-items: center;
    gap: var(--sp-4);
  }
}

.page-home .home-contact-line__key {
  margin: 0;
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--ash);
}

.page-home .home-contact-line__val {
  margin: 4px 0 0;
  font-size: var(--fs-16);
  color: var(--paper);
  word-break: break-all;
}

.page-home .home-contact-line__copy {
  margin-top: 4px;
  word-break: break-all;
}

.page-home .home-contact-line__action {
  justify-self: start;
}

/* ---------- 窄屏兜底 ---------- */
@media (max-width: 480px) {
  .page-home .home-hero__metrics {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-home .home-metric__val {
    font-size: var(--fs-18);
  }

  .page-home .home-channel,
  .page-home .home-save,
  .page-home .home-step,
  .page-home .home-contact-line {
    padding: var(--sp-2);
  }
}