/* ============ 四季首页 · page-home ============ */

.page-home {
  --home-gap: clamp(14px, 2vw, 22px);
  --season: var(--electric);
}

/* ---- 通用小元件 ---- */
.page-home .home-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--ink-soft);
}

.page-home .home-eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--season);
}

.page-home .home-h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 38px);
  font-weight: 600;
  line-height: 1.28;
  letter-spacing: .01em;
  color: var(--ink);
}

.page-home .home-section-lead {
  max-width: 62ch;
  margin: 12px 0 0;
  font-size: clamp(15px, 1.3vw, 16.5px);
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-home .home-arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  align-self: flex-start;
  padding-bottom: 2px;
  font-size: 14px;
  color: var(--electric);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease, color .2s ease;
}

.page-home .home-arrow-link::after {
  content: "→";
  transition: transform .2s ease;
}

.page-home .home-arrow-link:hover {
  border-color: currentColor;
}

.page-home .home-arrow-link:hover::after {
  transform: translateX(4px);
}

.page-home .home-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 24px;
  font-family: var(--font-body);
  font-size: 15px;
  text-decoration: none;
  border: 1px solid transparent;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  transition: background-color .22s ease, color .22s ease, border-color .22s ease;
}

.page-home .home-btn--solid {
  background: var(--ink);
  color: var(--paper);
}

.page-home .home-btn--solid:hover {
  background: var(--electric);
  color: #FFFFFF;
}

.page-home .home-btn--line {
  color: var(--ink);
  border-color: var(--rule);
}

.page-home .home-btn--line:hover {
  color: var(--electric);
  border-color: var(--electric);
}

/* ---- 首屏拼贴 ---- */
.page-home .home-hero {
  padding-block: clamp(20px, 3.4vw, 42px) clamp(26px, 4vw, 50px);
}

.page-home .home-crumb {
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--ink-soft);
}

.page-home .home-hero__grid {
  display: grid;
  gap: var(--home-gap);
  grid-template-columns: minmax(0, 1fr);
}

.page-home .home-hero__fig {
  position: relative;
  overflow: hidden;
  background: linear-gradient(145deg, var(--spring-soft), var(--spring));
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
}

.page-home .home-hero__fig img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-home .home-hero__intro {
  display: flex;
  flex-direction: column;
  gap: clamp(12px, 1.6vw, 18px);
  padding: clamp(22px, 3.2vw, 40px);
  background: var(--white);
  border: 1px solid var(--rule-soft);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-home .home-hero__intro h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(30px, 5.4vw, 58px);
  font-weight: 600;
  line-height: 1.16;
  letter-spacing: .01em;
  color: var(--ink);
}

.page-home .home-hero__lead {
  max-width: 46ch;
  margin: 0;
  font-size: clamp(15px, 1.35vw, 17px);
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-home .home-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(4px, 1vw, 10px);
}

.page-home .home-hero__index {
  padding: clamp(18px, 2.6vw, 30px);
  background: var(--mist);
  border-left: 3px solid var(--electric);
}

.page-home .home-hero__index-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .16em;
  color: var(--ink-soft);
}

.page-home .home-steps {
  display: grid;
  gap: 10px;
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.page-home .home-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink);
}

.page-home .home-steps__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--electric);
}

.page-home .home-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  height: 5px;
  margin-top: clamp(20px, 3vw, 34px);
  overflow: hidden;
  border-radius: 3px;
}

.page-home .home-flow__seg {
  display: block;
}

.page-home .home-flow__seg--spring { background: var(--spring); }
.page-home .home-flow__seg--summer { background: var(--summer); }
.page-home .home-flow__seg--autumn { background: var(--autumn); }
.page-home .home-flow__seg--winter { background: var(--winter-deep); }

/* ---- 入口索引带 ---- */
.page-home .entry-band {
  padding-block: clamp(38px, 6vw, 76px);
  background: var(--mist);
}

.page-home .entry-band__lead {
  max-width: 56ch;
  margin: 12px 0 clamp(24px, 3.5vw, 40px);
  font-size: clamp(15px, 1.3vw, 16.5px);
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-home .entry-list {
  display: grid;
  gap: var(--home-gap);
  align-items: start;
  grid-template-columns: minmax(0, 1fr);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .entry-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 2.4vw, 28px);
  background: var(--paper);
  border: 1px solid var(--rule-soft);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
  transition: background-color .22s ease, border-color .22s ease;
}

.page-home .entry-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 40px;
  height: 3px;
  background: var(--season);
  transition: width .3s ease;
}

.page-home .entry-card:hover {
  background: var(--white);
  border-color: var(--electric);
}

.page-home .entry-card:hover::after {
  width: 100%;
}

.page-home .entry-card:nth-child(1) { --season: var(--spring); }
.page-home .entry-card:nth-child(2) { --season: var(--summer); }
.page-home .entry-card:nth-child(3) { --season: var(--autumn); }
.page-home .entry-card:nth-child(4) { --season: var(--winter-deep); }

.page-home .entry-card__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--season);
}

.page-home .entry-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 600;
  line-height: 1.4;
}

.page-home .entry-card__title a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}

.page-home .entry-card__title a:hover {
  color: var(--electric);
  border-color: currentColor;
}

.page-home .entry-card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-soft);
  word-break: break-word;
}

/* ---- 四季章节 ---- */
.page-home .season-section {
  padding-block: clamp(40px, 6vw, 82px);
}

.page-home .season-grid {
  display: grid;
  gap: var(--home-gap);
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(24px, 3.5vw, 42px);
}

.page-home .season-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(22px, 2.8vw, 34px);
  border: 1px solid var(--rule-soft);
  overflow: hidden;
  transition: border-color .22s ease;
}

.page-home .season-card:hover {
  border-color: var(--season);
}

.page-home .season-card--spring {
  --season: var(--spring);
  background: linear-gradient(150deg, rgba(127, 181, 154, .16), var(--paper) 68%);
}

.page-home .season-card--summer {
  --season: var(--summer);
  background: linear-gradient(150deg, rgba(47, 127, 158, .14), var(--paper) 68%);
}

.page-home .season-card--autumn {
  --season: var(--autumn);
  background: linear-gradient(150deg, rgba(217, 154, 61, .16), var(--paper) 68%);
}

.page-home .season-card--winter {
  --season: var(--winter-deep);
  background: linear-gradient(150deg, rgba(44, 58, 94, .12), var(--winter) 70%);
}

.page-home .season-card__mark {
  font-family: var(--font-display);
  font-size: 30px;
  line-height: 1;
  color: var(--season);
}

.page-home .season-card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2vw, 23px);
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
}

.page-home .season-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-home .season-card__figure {
  margin: 0 0 4px;
  overflow: hidden;
  background: linear-gradient(150deg, var(--summer), var(--summer-soft));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-home .season-card__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  max-width: 100%;
  object-fit: cover;
}

/* ---- 服务路径 ---- */
.page-home .path-section {
  padding-block: clamp(40px, 6vw, 82px);
}

.page-home .path-layout {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(24px, 3.5vw, 42px);
}

.page-home .path-steps {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .path-step {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 2vw, 22px);
  align-items: start;
  padding-bottom: clamp(18px, 2.4vw, 26px);
}

.page-home .path-step::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 46px;
  bottom: 0;
  width: 1px;
  background: var(--rule);
}

.page-home .path-step:last-child {
  padding-bottom: 0;
}

.page-home .path-step:last-child::before {
  display: none;
}

.page-home .path-step__no {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 41px;
  height: 41px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 50%;
  transition: color .22s ease, border-color .22s ease, background-color .22s ease;
}

.page-home .path-step:nth-child(1) .path-step__no { border-color: var(--spring); color: var(--spring); }
.page-home .path-step:nth-child(2) .path-step__no { border-color: var(--summer); color: var(--summer); }
.page-home .path-step:nth-child(3) .path-step__no { border-color: var(--autumn); color: var(--autumn); }
.page-home .path-step:nth-child(4) .path-step__no { border-color: var(--winter-deep); color: var(--winter-deep); }

.page-home .path-step:hover .path-step__no {
  background: var(--white);
  border-color: var(--electric);
  color: var(--electric);
}

.page-home .path-step__body h3 {
  margin: 6px 0 6px;
  font-family: var(--font-display);
  font-size: clamp(17px, 1.9vw, 21px);
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
}

.page-home .path-step__body p {
  margin: 0;
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-home .path-figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  background: linear-gradient(160deg, var(--autumn-soft), var(--autumn));
  clip-path: polygon(22px 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%, 0 22px);
}

.page-home .path-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  max-width: 100%;
  object-fit: cover;
}

.page-home .path-figure figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 28px 18px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: #FFFFFF;
  background: linear-gradient(to top, rgba(30, 38, 36, .74), rgba(30, 38, 36, 0));
}

/* ---- 面板反馈 ---- */
.page-home .feedback {
  padding-block: clamp(40px, 6vw, 82px);
}

.page-home .feedback__layout {
  display: grid;
  gap: clamp(22px, 3.5vw, 44px);
  align-items: center;
  grid-template-columns: minmax(0, 1fr);
}

.page-home .feedback__figure {
  margin: 0;
  overflow: hidden;
  background: linear-gradient(160deg, var(--winter), var(--winter-deep));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-home .feedback__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  max-width: 100%;
  object-fit: cover;
}

.page-home .feedback__details {
  margin: clamp(16px, 2.4vw, 24px) 0 clamp(14px, 2vw, 20px);
  background: var(--white);
  border: 1px solid var(--rule);
}

.page-home .feedback__details summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  transition: background-color .2s ease;
}

.page-home .feedback__details summary::-webkit-details-marker {
  display: none;
}

.page-home .feedback__details summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--electric);
}

.page-home .feedback__details[open] summary::after {
  content: "–";
}

.page-home .feedback__details summary:hover {
  background: var(--mist);
}

.page-home .feedback__list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0 18px 18px;
  list-style: none;
}

.page-home .feedback__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-home .feedback__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 8px;
  height: 1px;
  background: var(--electric);
}

/* ---- 信任与备案 ---- */
.page-home .trust-band {
  padding-block: clamp(42px, 6vw, 84px);
  background: linear-gradient(180deg, var(--paper) 0%, var(--winter) 100%);
  border-top: 1px solid var(--rule-soft);
}

.page-home .trust-stats {
  display: grid;
  gap: clamp(18px, 3vw, 34px);
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: clamp(24px, 3.5vw, 38px) 0;
  padding: 0;
}

.page-home .trust-stat {
  display: flex;
  flex-direction: column-reverse;
  gap: 6px;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
}

.page-home .trust-stat dd {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 600;
  line-height: 1.1;
  color: var(--ink);
}

.page-home .trust-stat dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ink-soft);
}

.page-home .trust-note {
  max-width: 68ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-home .trust-filing {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--ink-soft);
}

/* ---- 响应式 ---- */
@media (min-width: 640px) {
  .page-home .entry-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 700px) {
  .page-home .season-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-home .home-hero__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    grid-template-areas:
      "fig intro"
      "fig index";
    align-items: stretch;
  }

  .page-home .home-hero__fig { grid-area: fig; }
  .page-home .home-hero__intro { grid-area: intro; }
  .page-home .home-hero__index { grid-area: index; }

  .page-home .home-hero__fig img {
    aspect-ratio: auto;
    min-height: 360px;
  }

  .page-home .path-layout {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  }

  .page-home .feedback__layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  }
}

@media (min-width: 1040px) {
  .page-home .entry-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-home .entry-card:nth-child(even) {
    margin-top: 26px;
  }

  .page-home .season-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .page-home .season-card--spring { grid-column: 1 / span 5; }
  .page-home .season-card--summer { grid-column: 6 / span 7; }
  .page-home .season-card--autumn { grid-column: 1 / span 5; }
  .page-home .season-card--winter { grid-column: 7 / span 6; }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .home-arrow-link::after,
  .page-home .entry-card::after,
  .page-home .home-btn,
  .page-home .entry-card,
  .page-home .season-card,
  .page-home .path-step__no {
    transition: none;
  }
}