/* ============ 首页专属样式：page-home ============ */
.page-home {
  --ph-progress-h: 3px;
  --ph-anchor-underline: 2px;
  background: var(--color-ice-50);
  overflow-x: hidden;
}

/* --- 通用内容容器 --- */
.page-home .ph-wrap {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

/* --- 纯 CSS 滚动进度条（渐进增强，不支持时宽度为 0） --- */
.page-home .ph-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: var(--ph-progress-h);
  background: linear-gradient(90deg, var(--color-glacier-600), var(--color-sun-500));
  z-index: 999;
  animation: ph-progress-grow linear both;
  animation-timeline: scroll(root);
}

@keyframes ph-progress-grow {
  from { width: 0; }
  to { width: 100%; }
}

/* ===== 海报式首屏 ===== */
.page-home .ph-hero {
  position: relative;
  overflow: hidden;
  background: var(--color-ice-50);
  padding-block: var(--space-6) var(--space-8);
  border-bottom: 1px solid var(--color-line-300);
}

.page-home .ph-hero__grid {
  display: grid;
  gap: var(--space-6);
  align-items: center;
}

.page-home .ph-hero__body {
  position: relative;
  z-index: 2;
}

.page-home .ph-hero__eyebrow {
  display: inline-block;
  margin: 0 0 var(--space-4);
  padding-left: var(--space-3);
  border-left: var(--ph-anchor-underline) solid var(--color-sun-500);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-glacier-600);
}

.page-home .ph-hero__titleline {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
}

.page-home .ph-hero__titleline h1 {
  margin: 0;
  font-size: var(--fs-h1);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--color-glacier-900);
  font-weight: var(--font-weight-heading);
}

.page-home .ph-hero__no {
  font-size: clamp(1rem, 2.4vw, 1.625rem);
  line-height: 1.1;
  font-weight: 900;
  color: var(--color-sun-500);
  text-align: right;
  white-space: nowrap;
}

.page-home .ph-hero__lead {
  margin: var(--space-4) 0 0;
  max-width: 46em;
  font-weight: var(--font-weight-body);
  line-height: var(--line-height);
  color: var(--color-ink-600);
}

.page-home .ph-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.page-home .ph-hero__figure {
  margin: 0;
  position: relative;
  z-index: 2;
  border: 1px solid var(--color-line-300);
  background: var(--color-white);
}

.page-home .ph-hero__figure img {
  display: block;
  width: 100%;
  max-height: 320px;
  height: auto;
  object-fit: cover;
}

/* 滑雪道曲线 SVG */
.page-home .ph-curve {
  position: absolute;
  z-index: 1;
  right: -8%;
  bottom: -10%;
  width: 90%;
  height: 70%;
  pointer-events: none;
  opacity: 0.5;
}

.page-home .ph-curve__a,
.page-home .ph-curve__b {
  fill: none;
  stroke-width: 2;
}

.page-home .ph-curve__a {
  stroke: var(--color-glacier-600);
  stroke-dasharray: 10 14;
}

.page-home .ph-curve__b {
  stroke: var(--color-sun-500);
  stroke-dasharray: 6 10;
  opacity: 0.78;
}

/* ===== 内容目录 ===== */
.page-home .ph-toc {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-line-300);
  padding-block: var(--space-6);
}

.page-home .ph-num {
  font-weight: 900;
  color: var(--color-sun-500);
  line-height: 1;
}

.page-home .ph-toc__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--space-3);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-line-300);
  margin-bottom: var(--space-4);
}

.page-home .ph-toc__head h2 {
  margin: 0;
  font-size: var(--fs-h3);
  font-weight: var(--font-weight-heading);
  color: var(--color-glacier-900);
}

.page-home .ph-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-home .ph-toc__list a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: 1px solid transparent;
  color: var(--color-ink-900);
  text-decoration: none;
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.page-home .ph-toc__list a:hover,
.page-home .ph-toc__list a:focus {
  border-color: var(--color-line-300);
  background-color: var(--color-ice-50);
  transform: translateX(4px);
}

.page-home .ph-toc__idx {
  min-width: 2em;
  font-weight: 900;
  color: var(--color-glacier-600);
}

.page-home .ph-toc__text {
  font-weight: 500;
}

/* ===== 四个核心入口 ===== */
.page-home .ph-gates {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-line-300);
  padding-block: var(--space-6);
}

.page-home .ph-gates__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-line-300);
}

.page-home .ph-gates__head h2 {
  margin: 0;
  font-size: var(--fs-h3);
  font-weight: var(--font-weight-heading);
  color: var(--color-glacier-900);
}

.page-home .ph-gates__grid {
  display: grid;
  gap: var(--space-3);
}

.page-home .ph-gate {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-5);
  text-decoration: none;
  border: 1px solid var(--color-line-300);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-home .ph-gate:hover,
.page-home .ph-gate:focus {
  transform: translate(-4px, -4px);
  box-shadow: 6px 6px 0 rgba(22, 122, 140, 0.12);
}

.page-home .ph-gate__idx {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.page-home .ph-gate__title {
  font-size: clamp(1.125rem, 2.2vw, 1.5rem);
  font-weight: 900;
  line-height: 1.3;
}

.page-home .ph-gate__desc {
  margin-top: auto;
  font-size: 0.9375rem;
  font-weight: 400;
}

.page-home .ph-gate--a {
  background: var(--color-sun-500);
  border-color: var(--color-sun-500);
  color: var(--color-white);
}

.page-home .ph-gate--a .ph-gate__idx {
  color: rgba(255, 255, 255, 0.85);
}

.page-home .ph-gate--b {
  background: var(--color-white);
  border-color: var(--color-line-300);
  color: var(--color-ink-900);
}

.page-home .ph-gate--b .ph-gate__idx {
  color: var(--color-sun-500);
}

.page-home .ph-gate--c {
  background: var(--color-ice-200);
  border-color: var(--color-ice-200);
  color: var(--color-glacier-900);
}

.page-home .ph-gate--c .ph-gate__idx {
  color: var(--color-glacier-600);
}

.page-home .ph-gate--d {
  background: var(--color-glacier-900);
  border-color: var(--color-glacier-900);
  color: var(--color-white);
}

.page-home .ph-gate--d .ph-gate__idx {
  color: var(--color-sun-500);
}

.page-home .ph-gate--d .ph-gate__desc {
  color: rgba(255, 255, 255, 0.78);
}

/* ===== 会员权益区 ===== */
.page-home .ph-benefits {
  background: var(--color-ice-200);
  border-bottom: 1px solid var(--color-line-300);
  padding-block: var(--space-8) var(--space-6);
}

.page-home .ph-kicker {
  margin: 0;
  font-size: 0.8125rem;
  font-weight: 900;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-glacier-600);
}

.page-home .ph-benefits__head {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.page-home .ph-benefits__head h2 {
  margin: 0;
  font-size: var(--fs-h2);
  font-weight: var(--font-weight-heading);
  color: var(--color-glacier-900);
}

.page-home .ph-benefits__head p {
  margin: 0;
  max-width: 42em;
  color: var(--color-ink-600);
}

.page-home .ph-benefits__grid {
  display: grid;
  gap: var(--space-3);
}

.page-home .ph-benefit {
  background: var(--color-white);
  border: 1px solid var(--color-line-300);
}

.page-home .ph-benefit summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  color: var(--color-glacier-900);
}

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

.page-home .ph-benefit[open] summary {
  border-bottom: 1px solid var(--color-line-300);
}

.page-home .ph-benefit__name {
  font-weight: 900;
}

.page-home .ph-benefit p {
  margin: 0;
  padding: var(--space-4) var(--space-5);
  font-size: 0.9375rem;
  line-height: var(--line-height);
  color: var(--color-ink-600);
}

.page-home .ph-benefits__figure {
  margin: var(--space-5) 0 0;
  border: 1px solid var(--color-line-300);
  background: var(--color-white);
}

.page-home .ph-benefits__figure img {
  display: block;
  width: 100%;
  height: auto;
}

/* ===== 个人中心速览 ===== */
.page-home .ph-account {
  background: var(--color-glacier-900);
  color: var(--color-white);
  border-bottom: 1px solid var(--color-line-300);
  padding-block: var(--space-8);
}

.page-home .ph-account__head {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.page-home .ph-account__head .ph-kicker {
  color: var(--color-sun-500);
}

.page-home .ph-account__head h2 {
  margin: 0;
  font-size: var(--fs-h2);
  font-weight: var(--font-weight-heading);
  color: var(--color-white);
}

.page-home .ph-account__head p {
  margin: 0;
  max-width: 44em;
  color: var(--color-ice-200);
}

.page-home .ph-account__grid {
  display: grid;
  gap: var(--space-4);
}

.page-home .ph-account__card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.18);
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.page-home .ph-account__card:hover {
  transform: translateY(-4px);
  background-color: rgba(255, 255, 255, 0.1);
}

.page-home .ph-account__card h3 {
  margin: 0;
  font-size: var(--fs-h3);
  font-weight: var(--font-weight-heading);
  color: var(--color-white);
}

.page-home .ph-account__card p {
  margin: 0;
  line-height: var(--line-height);
  color: var(--color-ice-200);
}

.page-home .ph-account__card a {
  margin-top: auto;
  color: var(--color-sun-100);
  font-weight: 700;
  text-decoration: none;
}

.page-home .ph-account__card a:hover {
  text-decoration: underline;
}

.page-home .ph-account__figure {
  margin: 0;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
}

.page-home .ph-account__figure img {
  display: block;
  width: 100%;
  height: auto;
}

/* ===== PC端回访记录 ===== */
.page-home .ph-pc {
  background: var(--color-ice-50);
  border-bottom: 1px solid var(--color-line-300);
  padding-block: var(--space-8);
}

.page-home .ph-pc__head {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.page-home .ph-pc__head h2 {
  margin: 0;
  font-size: var(--fs-h2);
  font-weight: var(--font-weight-heading);
  color: var(--color-glacier-900);
}

.page-home .ph-pc__head p {
  margin: 0;
  max-width: 44em;
  color: var(--color-ink-600);
}

.page-home .ph-pc__list {
  list-style: none;
  margin: 0 0 var(--space-5);
  padding: 0;
  display: grid;
  gap: var(--space-3);
}

.page-home .ph-pc__list li {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-4);
  background: var(--color-white);
  border-left: 4px solid var(--color-glacier-600);
  border-bottom: 1px solid var(--color-line-300);
}

.page-home .ph-pc__list b {
  font-weight: 900;
  color: var(--color-glacier-900);
}

.page-home .ph-pc__list span {
  font-size: 0.9375rem;
  color: var(--color-ink-600);
}

.page-home .ph-pc__figure {
  margin: 0;
  border: 1px solid var(--color-line-300);
  background: var(--color-white);
}

.page-home .ph-pc__figure img {
  display: block;
  width: 100%;
  height: auto;
}

/* ===== 延伸阅读 ===== */
.page-home .ph-extras {
  background: var(--color-white);
  padding-block: var(--space-8);
}

.page-home .ph-extras__grid {
  display: grid;
  gap: var(--space-4);
}

.page-home .ph-extras__card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
  border: 1px solid var(--color-line-300);
  border-top: 4px solid var(--color-sun-500);
  transition: box-shadow 0.2s ease;
}

.page-home .ph-extras__card:hover {
  box-shadow: 0 10px 20px rgba(14, 46, 56, 0.06);
}

.page-home .ph-extras__card h3 {
  margin: 0;
  font-size: var(--fs-h3);
  font-weight: var(--font-weight-heading);
  color: var(--color-glacier-900);
}

.page-home .ph-extras__card p {
  margin: 0;
  line-height: var(--line-height);
  color: var(--color-ink-600);
}

.page-home .ph-extras__card a {
  margin-top: auto;
  color: var(--color-glacier-600);
  font-weight: 900;
  text-decoration: none;
}

.page-home .ph-extras__card a:hover {
  text-decoration: underline;
}

/* ===== 中屏：720px ===== */
@media (min-width: 720px) {
  .page-home .ph-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
    gap: var(--space-6);
  }

  .page-home .ph-hero__figure img {
    max-height: 440px;
  }

  .page-home .ph-gates__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-home .ph-benefits__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-home .ph-account__grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .page-home .ph-account__card--a {
    grid-column: 1;
  }

  .page-home .ph-account__figure {
    grid-column: 2;
    grid-row: 1 / span 2;
  }

  .page-home .ph-account__card--b {
    grid-column: 1;
  }

  .page-home .ph-pc__body {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-5);
    align-items: center;
  }

  .page-home .ph-pc__list {
    margin: 0;
  }

  .page-home .ph-extras__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-home .ph-curve {
    width: 70%;
    height: 80%;
  }
}

/* ===== 宽屏：992px ===== */
@media (min-width: 992px) {
  .page-home .ph-hero {
    padding-block: var(--space-8);
  }

  .page-home .ph-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
    gap: var(--space-8);
  }

  .page-home .ph-hero__figure img {
    max-height: 560px;
  }

  .page-home .ph-toc__list {
    grid-template-columns: repeat(6, 1fr);
  }

  .page-home .ph-toc__list a {
    flex-direction: column;
    align-items: flex-start;
    transform: none;
  }

  .page-home .ph-toc__list a:hover,
  .page-home .ph-toc__list a:focus {
    transform: translateY(-3px);
  }

  .page-home .ph-benefits__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-home .ph-account__grid {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.85fr);
    align-items: center;
  }

  .page-home .ph-pc__body {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.9fr);
  }
}