/* ================= 首页 ================= */
.page-home {
  --ph-lift: 0 22px 48px -32px rgba(22, 33, 30, .5);
  display: block;
}

/* ---------- 有机色块装饰 ---------- */
.page-home .ph-blob {
  position: absolute;
  border-radius: 46% 54% 62% 38% / 43% 44% 56% 57%;
  pointer-events: none;
  z-index: 1;
}
.page-home .ph-blob--a {
  width: 240px;
  height: 240px;
  top: -70px;
  right: -50px;
  background: radial-gradient(circle at 35% 35%, rgba(191, 227, 214, .95), rgba(191, 227, 214, .18));
}
.page-home .ph-blob--b {
  width: 170px;
  height: 170px;
  bottom: -50px;
  left: -40px;
  background: radial-gradient(circle at 60% 40%, rgba(224, 138, 60, .3), rgba(224, 138, 60, .04));
}

/* ---------- 封面首屏 ---------- */
.page-home .ph-hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding: calc(var(--header-h) + 40px) 0 44px;
}
.page-home .ph-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(118% 86% at 88% 4%, rgba(191, 227, 214, .92), rgba(191, 227, 214, 0) 62%),
    radial-gradient(86% 66% at 2% 98%, rgba(224, 138, 60, .17), rgba(224, 138, 60, 0) 62%),
    linear-gradient(180deg, #FDFBF6 0%, #F6F3EA 100%);
}
.page-home .ph-hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 30px;
  align-content: start;
}
.page-home .ph-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--grass-600);
}
.page-home .ph-hero__eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--grass-600);
  flex: none;
}
.page-home .ph-hero__title {
  margin: 16px 0 0;
  font-size: clamp(34px, 8.6vw, 62px);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -0.012em;
  color: var(--ink-900);
  max-width: 620px;
}
.page-home .ph-hero__lede {
  margin: 20px 0 26px;
  font-size: 17px;
  line-height: 1.82;
  color: var(--ink-700);
  max-width: 34em;
}
.page-home .ph-hero__figure {
  margin: 0;
  border-radius: 26px 26px 26px 10px;
  overflow: hidden;
  aspect-ratio: 4 / 5;
  box-shadow: var(--shadow-soft);
  max-width: 420px;
}
.page-home .ph-hero__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 入口导引点 */
.page-home .ph-entry {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  max-width: 100%;
  padding: 13px 20px 13px 17px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: var(--grass-600);
  color: #FBF8F1;
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  box-shadow: var(--shadow-soft);
  transition: background-color 200ms var(--ease), transform 200ms var(--ease),
              box-shadow 200ms var(--ease);
}
.page-home .ph-entry:hover,
.page-home .ph-entry:focus-visible {
  background: var(--grass-700);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
}
.page-home .ph-entry__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex: none;
  background: var(--dune-500);
  box-shadow: 0 0 0 4px rgba(224, 138, 60, .3);
  animation: ph-pulse 2.6s ease-in-out infinite;
}
.page-home .ph-entry__label {
  white-space: nowrap;
}
.page-home .ph-entry__more {
  display: inline-block;
  overflow: hidden;
  white-space: nowrap;
  max-width: 0;
  opacity: 0;
  font-size: 14px;
  font-weight: 500;
  color: rgba(251, 248, 241, .88);
  transition: max-width 220ms var(--ease), opacity 220ms var(--ease),
              margin-left 220ms var(--ease);
}
.page-home .ph-entry:hover .ph-entry__more,
.page-home .ph-entry:focus-visible .ph-entry__more {
  max-width: 280px;
  margin-left: 4px;
  opacity: 1;
}
@keyframes ph-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.18); opacity: .76; }
}

/* ---------- 通用章节 ---------- */
.page-home .ph-sec {
  position: relative;
  padding: 62px 0;
}
.page-home .ph-sechead {
  margin-bottom: 32px;
}
.page-home .nx-sec-num {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--grass-600);
}
.page-home .nx-sec-title {
  margin: 8px 0 0;
  font-size: clamp(24px, 4.8vw, 34px);
  line-height: 1.32;
  font-weight: 800;
  color: var(--ink-900);
}
.page-home .nx-sec-note {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-700);
  max-width: 44em;
}
.page-home .ph-num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

/* ---------- 01 三条主线 ---------- */
.page-home .ph-lines {
  display: grid;
  gap: 20px;
}
.page-home .ph-lines__card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 28px 26px 26px;
  border: 1px solid var(--line-300);
  border-radius: 24px;
  background: var(--paper-100);
  box-shadow: var(--shadow-soft);
  transition: transform 200ms var(--ease), box-shadow 200ms var(--ease),
              border-color 200ms var(--ease);
}
.page-home .ph-lines__card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
  border-color: var(--grass-200);
}
.page-home .ph-lines__figure {
  margin: 0 0 4px;
  border-radius: 16px;
  overflow: hidden;
  aspect-ratio: 5 / 4;
}
.page-home .ph-lines__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-home .ph-lines__eyebrow {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--grass-600);
}
.page-home .ph-lines__title {
  margin: 0;
  font-size: 21px;
  line-height: 1.48;
  font-weight: 700;
  color: var(--ink-900);
}
.page-home .ph-lines__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-700);
}
.page-home .ph-lines__link {
  margin-top: auto;
  padding-top: 10px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 700;
  color: var(--grass-600);
  text-decoration: none;
}
.page-home .ph-lines__link::after {
  content: "→";
  transition: transform 200ms var(--ease);
}
.page-home .ph-lines__link:hover::after,
.page-home .ph-lines__link:focus-visible::after {
  transform: translateX(3px);
}

/* ---------- 02 为什么选小鸟 ---------- */
.page-home .ph-why {
  display: grid;
  gap: 34px;
}
.page-home .ph-why__main {
  display: grid;
}
.page-home .ph-why__item {
  display: grid;
  gap: 10px;
  padding: 24px 0;
  border-top: 1px solid var(--line-300);
}
.page-home .ph-why__item:first-child {
  border-top: 0;
  padding-top: 0;
}
.page-home .ph-why__item:last-child {
  padding-bottom: 0;
}
.page-home .ph-why__title {
  margin: 0;
  font-size: 20px;
  line-height: 1.5;
  font-weight: 700;
  color: var(--ink-900);
}
.page-home .ph-why__title::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 10px;
  border-radius: 50%;
  background: var(--dune-500);
  vertical-align: middle;
  transform: translateY(-2px);
}
.page-home .ph-why__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--ink-700);
}
.page-home .ph-why__aside {
  padding: 28px 26px;
  border-radius: 24px;
  border: 1px solid rgba(30, 138, 110, .18);
  background: linear-gradient(160deg, rgba(191, 227, 214, .55), rgba(251, 248, 241, .92));
}
.page-home .ph-aside__kicker {
  margin: 0 0 20px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--grass-700);
}
.page-home .ph-aside__stat {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-900);
}
.page-home .ph-aside__stat .ph-num {
  font-size: 26px;
  color: var(--grass-700);
  margin-right: 2px;
}
.page-home .ph-aside__desc {
  margin: 7px 0 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--ink-700);
}
.page-home .ph-aside__hr {
  margin: 20px 0;
  border: 0;
  border-top: 1px dashed rgba(30, 138, 110, .3);
}

/* ---------- 03 会员与说明 ---------- */
.page-home .ph-tiers {
  display: grid;
  gap: 18px;
}
.page-home .ph-tier {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 26px 24px 28px;
  border: 1px solid var(--line-300);
  border-radius: 22px;
  background: var(--paper-100);
  transition: transform 200ms var(--ease), box-shadow 200ms var(--ease),
              border-color 200ms var(--ease);
}
.page-home .ph-tier:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
  border-color: var(--grass-200);
}
.page-home .ph-tier--mid {
  border-color: transparent;
  background: linear-gradient(168deg, #1E8A6E, #17705A);
  box-shadow: var(--shadow-lift);
}
.page-home .ph-tier__name {
  margin: 0;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: .02em;
  color: var(--ink-900);
}
.page-home .ph-tier__for {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--grass-700);
}
.page-home .ph-tier__list {
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}
.page-home .ph-tier__list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink-700);
}
.page-home .ph-tier__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--grass-200);
}
.page-home .ph-tier--mid .ph-tier__name,
.page-home .ph-tier--mid .ph-tier__for {
  color: #FBF8F1;
}
.page-home .ph-tier--mid .ph-tier__list li {
  color: rgba(251, 248, 241, .9);
}
.page-home .ph-tier--mid .ph-tier__list li::before {
  background: var(--dune-500);
}

.page-home .ph-member__foot {
  display: grid;
  gap: 28px;
  margin-top: 44px;
  padding-top: 34px;
  border-top: 1px solid var(--line-300);
}
.page-home .ph-member__lead {
  margin: 0 0 16px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink-900);
}
.page-home .ph-member__tags {
  margin-bottom: 18px;
}
.page-home .ph-member__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--ink-700);
  max-width: 34em;
}
.page-home .ph-member__text a,
.page-home .ph-archive__cap a,
.page-home .ph-close__meta a {
  color: var(--grass-600);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-home .ph-member__figure {
  margin: 0;
  border-radius: 22px;
  overflow: hidden;
  aspect-ratio: 1 / 1;
  box-shadow: var(--shadow-soft);
  max-width: 420px;
}
.page-home .ph-member__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 04 归档提要 ---------- */
.page-home .ph-sec--archive {
  background: linear-gradient(180deg, rgba(191, 227, 214, .32), rgba(191, 227, 214, 0) 82%);
}
.page-home .ph-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 4px;
  margin: 0 0 32px;
  padding: 26px 10px;
  border: 1px solid var(--line-300);
  border-radius: 22px;
  background: rgba(251, 248, 241, .8);
}
.page-home .ph-stats__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 0 6px;
  text-align: center;
}
.page-home .ph-stats__item + .ph-stats__item {
  border-left: 1px solid var(--line-300);
}
.page-home .ph-num--xl {
  font-family: var(--font-mono);
  font-size: clamp(32px, 7.6vw, 54px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--grass-600);
}
.page-home .ph-stats__lb {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-700);
}
.page-home .ph-archive__figure {
  margin: 0;
  border-radius: 26px;
  overflow: hidden;
  border: 1px solid var(--line-300);
  box-shadow: var(--shadow-soft);
}
.page-home .ph-archive__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.page-home .ph-archive__cap {
  padding: 16px 20px 18px;
  border-top: 1px solid var(--line-300);
  background: var(--paper-100);
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink-700);
}

/* ---------- 05 收尾 ---------- */
.page-home .ph-sec--close {
  padding-bottom: 90px;
}
.page-home .ph-close {
  position: relative;
  overflow: hidden;
  padding: 40px 26px 42px;
  border-radius: 28px;
  background: linear-gradient(142deg, rgba(191, 227, 214, .62), rgba(126, 184, 216, .24) 68%, rgba(224, 138, 60, .14));
}
.page-home .ph-close::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -90px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(30, 138, 110, .18), rgba(30, 138, 110, 0) 70%);
  pointer-events: none;
}
.page-home .ph-close__body {
  position: relative;
  z-index: 1;
  max-width: 640px;
}
.page-home .ph-close__text {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.82;
  color: var(--ink-700);
}
.page-home .ph-close__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 26px 0 18px;
}
.page-home .ph-close__meta {
  margin: 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--ink-700);
}

/* ---------- 媒体查询 ---------- */
@media (min-width: 640px) {
  .page-home .ph-hero {
    padding-top: calc(var(--header-h) + 60px);
    padding-bottom: 58px;
  }
  .page-home .ph-sec {
    padding: 78px 0;
  }
  .page-home .ph-sechead {
    margin-bottom: 40px;
  }
  .page-home .ph-blob--a {
    width: 340px;
    height: 340px;
    right: -70px;
  }
  .page-home .ph-blob--b {
    width: 220px;
    height: 220px;
  }
  .page-home .ph-close {
    padding: 52px 46px 54px;
  }
  .page-home .ph-archive__figure img {
    aspect-ratio: 16 / 10;
  }
}

@media (min-width: 760px) {
  .page-home .ph-lines {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-home .ph-tiers {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
    gap: 20px;
  }
  .page-home .ph-tier--mid {
    transform: translateY(-14px);
    padding-top: 34px;
    padding-bottom: 36px;
  }
  .page-home .ph-tier--mid:hover {
    transform: translateY(-16px);
  }
  .page-home .ph-member__figure {
    max-width: 100%;
  }
}

@media (min-width: 900px) {
  .page-home .ph-hero {
    padding-top: calc(var(--header-h) + 84px);
    padding-bottom: 72px;
  }
  .page-home .ph-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 48px;
    align-items: end;
  }
  .page-home .ph-hero__figure {
    margin-bottom: -58px;
    max-width: 100%;
  }
  .page-home .ph-sec {
    padding: 96px 0;
  }
  .page-home .ph-why {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 56px;
    align-items: start;
  }
  .page-home .ph-member__foot {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 48px;
    align-items: center;
  }
}

@media (min-width: 1060px) {
  .page-home .ph-lines {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr) minmax(0, .92fr);
    align-items: start;
    gap: 24px;
  }
  .page-home .ph-lines__card--case {
    margin-top: 46px;
  }
  .page-home .ph-lines__card--upd {
    margin-top: 94px;
  }
}

@media (max-width: 639px) {
  .page-home .ph-entry__more {
    display: none;
  }
  .page-home .ph-hero__figure {
    aspect-ratio: 3 / 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .ph-entry,
  .page-home .ph-entry__more,
  .page-home .ph-lines__card,
  .page-home .ph-lines__link::after,
  .page-home .ph-tier {
    transition: none;
  }
  .page-home .ph-entry__dot {
    animation: none;
  }
}