.page-home {
  background: var(--color-background);
  overflow-x: hidden;
}

/* ===== 首屏 ===== */
.page-home .page-home-hero {
  position: relative;
  padding: 56px 0 72px;
  background: linear-gradient(120deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-text-light);
  overflow: hidden;
}

.page-home .page-home-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: -6%;
  width: 44%;
  height: 100%;
  background: repeating-linear-gradient(-55deg, transparent 0 14px, rgba(200, 241, 53, 0.06) 14px 15px);
  clip-path: polygon(14% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-home .page-home-hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}

.page-home .page-home-hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.page-home .page-home-hero-index {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: rgba(245, 240, 230, 0.64);
  text-transform: uppercase;
}

.page-home .page-home-hero-title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(52px, 12vw, 112px);
  line-height: 0.92;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.page-home .page-home-hero-title-small {
  display: block;
  margin-bottom: 14px;
  font-family: var(--font-body);
  font-size: clamp(15px, 2.4vw, 22px);
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-neon);
  text-transform: uppercase;
}

.page-home .page-home-hero-title-main {
  display: block;
  color: var(--color-text-light);
}

.page-home .page-home-hero-title-accent {
  display: inline-block;
  color: rgba(200, 241, 53, 0.16);
  -webkit-text-stroke: 2px var(--color-neon);
}

.page-home .page-home-hero-lead {
  max-width: 640px;
  font-size: clamp(15px, 2vw, 18px);
  color: rgba(245, 240, 230, 0.86);
  line-height: 1.75;
}

.page-home .page-home-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 24px;
}

.page-home .page-home-login {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

.page-home .page-home-login-panel {
  background: rgba(6, 14, 26, 0.72);
  border-left: 4px solid var(--color-neon);
  padding: 16px;
  max-width: 460px;
  font-size: 14px;
  line-height: 1.7;
}

.page-home .page-home-login-panel .feedback-title {
  margin-bottom: 6px;
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-neon);
}

.page-home .page-home-login-panel p:not(.feedback-title) {
  margin: 0 0 12px;
  color: rgba(245, 240, 230, 0.84);
}

.page-home .page-home-hero-media {
  position: relative;
  filter: drop-shadow(14px 14px 0 rgba(200, 241, 53, 0.18));
}

.page-home .page-home-hero-media-frame {
  position: relative;
  overflow: hidden;
  clip-path: polygon(5% 0, 100% 0, 95% 100%, 0 100%);
  background: var(--color-primary-light);
}

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

/* ===== 章节预览 ===== */
.page-home .page-home-preview {
  padding: 72px 0 80px;
  background: var(--color-background);
}

.page-home .page-home-preview .section-header {
  margin-bottom: 36px;
}

.page-home .page-home-preview-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-home .page-home-preview-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 230px;
  padding: 24px 20px;
  border: 2px solid var(--color-primary);
  border-radius: 0;
  background: var(--color-background);
  box-shadow: 8px 8px 0 var(--color-background-alt);
  overflow: hidden;
  transition: transform 0.28s ease, box-shadow 0.28s ease;
}

.page-home .page-home-preview-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(200, 241, 53, 0.24), transparent 58%);
  clip-path: polygon(0 0, 100% 0, 100% 34%, 0 62%);
  opacity: 0;
  transition: opacity 0.24s ease;
  pointer-events: none;
}

.page-home .page-home-preview-card:hover,
.page-home .page-home-preview-card:focus-within {
  transform: translate(-4px, -4px);
  box-shadow: 12px 12px 0 var(--color-background-alt);
}

.page-home .page-home-preview-card:hover::before {
  opacity: 1;
}

.page-home .page-home-preview-index {
  position: relative;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: clamp(36px, 6vw, 46px);
  line-height: 0.9;
  font-weight: 700;
  color: rgba(27, 58, 92, 0.18);
  -webkit-text-stroke: 1.5px var(--color-primary-light);
}

.page-home .page-home-preview-title {
  position: relative;
  z-index: 1;
  margin: 0;
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text-dark);
}

.page-home .page-home-preview-desc {
  position: relative;
  z-index: 1;
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-secondary);
  flex: 1 0 auto;
}

.page-home .page-home-preview-link {
  position: relative;
  z-index: 1;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-accent-terracotta);
  text-decoration: none;
  border-bottom: 2px solid var(--color-accent-terracotta);
  padding-bottom: 2px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-home .page-home-preview-link:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.page-home .page-home-preview-card-wide {
  background: var(--color-background-alt);
}

.page-home .page-home-preview-media {
  overflow: hidden;
  border: 2px solid var(--color-primary);
  margin: 4px 0 2px;
}

.page-home .page-home-preview-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.page-home .page-home-preview-card:hover .page-home-preview-media img {
  transform: scale(1.04);
}

@media (max-width: 639px) {
  .page-home .page-home-preview-grid {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 16px;
    padding-bottom: 16px;
    margin-right: -16px;
  }

  .page-home .page-home-preview-card {
    flex: 0 0 86%;
    scroll-snap-align: start;
    min-height: 240px;
  }

  .page-home .page-home-preview-card-wide {
    flex: 0 0 92%;
  }
}

@media (min-width: 640px) {
  .page-home .page-home-preview-grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-home .page-home-preview-card-wide {
    grid-column: span 2;
  }
}

@media (min-width: 1024px) {
  .page-home .page-home-preview-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ===== 数据实力 ===== */
.page-home .page-home-data {
  position: relative;
  padding: 88px 0;
  background: var(--color-primary-dark);
  color: var(--color-text-light);
  overflow: hidden;
}

.page-home .page-home-data::after {
  content: "";
  position: absolute;
  right: -10%;
  bottom: -20%;
  width: 60%;
  height: 60%;
  background: radial-gradient(circle at center, rgba(200, 241, 53, 0.1), transparent 68%);
  pointer-events: none;
}

.page-home .page-home-data-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.14;
}

.page-home .page-home-data-bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-home .page-home-data-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.page-home .page-home-data .section-header {
  margin-bottom: 8px;
}

.page-home .page-home-data .section-title,
.page-home .page-home-feedback .section-title {
  color: var(--color-text-light);
}

.page-home .page-home-data .section-index,
.page-home .page-home-feedback .section-index {
  color: var(--color-neon);
}

.page-home .page-home-data-copy .lead {
  margin-top: 20px;
  color: rgba(245, 240, 230, 0.82);
}

.page-home .page-home-data-big {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin-top: 12px;
}

.page-home .page-home-data-big .data-num {
  font-family: var(--font-display);
  font-size: clamp(120px, 24vw, 220px);
  line-height: 0.85;
  color: var(--color-neon);
  text-shadow: 8px 8px 0 var(--color-primary-light);
}

.page-home .page-home-data-big-label {
  max-width: 220px;
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-text-light);
}

.page-home .page-home-sync {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px dashed rgba(245, 240, 230, 0.3);
}

.page-home .page-home-sync span {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: rgba(245, 240, 230, 0.76);
}

.page-home .page-home-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

@media (min-width: 640px) {
  .page-home .page-home-stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

.page-home .page-home-stat {
  position: relative;
  padding: 20px 16px 16px;
  background: rgba(245, 240, 230, 0.06);
  border-top: 3px solid var(--color-accent-terracotta);
}

.page-home .page-home-stat::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 16px;
  height: 16px;
  background: var(--color-neon);
  opacity: 0.6;
}

.page-home .page-home-stat .data-num {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: clamp(26px, 4.4vw, 40px);
  font-weight: 700;
  color: var(--color-highlight);
}

.page-home .page-home-stat-label {
  font-size: 13px;
  line-height: 1.45;
  color: rgba(245, 240, 230, 0.8);
}

/* ===== 会员引导 ===== */
.page-home .page-home-member {
  padding: 88px 0;
  background: var(--color-background-alt);
}

.page-home .page-home-member-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

.page-home .page-home-member-device {
  position: relative;
  max-width: 340px;
  margin: 0 auto;
  filter: drop-shadow(14px 14px 0 rgba(11, 29, 58, 0.16));
}

.page-home .page-home-member-device::before {
  content: "";
  position: absolute;
  top: 16px;
  right: -16px;
  width: 100%;
  height: 100%;
  background: var(--color-neon);
  z-index: 0;
}

.page-home .page-home-member-device img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 2;
  object-fit: cover;
  border: 3px solid var(--color-primary);
  background: var(--color-background);
}

.page-home .page-home-member-copy .section-header {
  margin-bottom: 12px;
}

.page-home .page-home-member-copy .lead {
  color: var(--color-text-dark);
}

.page-home .page-home-member-steps {
  list-style: none;
  counter-reset: member-step;
  margin: 24px 0;
  padding: 0;
}

.page-home .page-home-member-steps li {
  counter-increment: member-step;
  position: relative;
  padding: 10px 0 10px 52px;
  border-bottom: 1px dashed rgba(11, 29, 58, 0.22);
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text-dark);
}

.page-home .page-home-member-steps li::before {
  content: counter(member-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 8px;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-accent-terracotta);
}

.page-home .page-home-member-tip {
  margin: 0 0 28px;
  padding: 14px 16px;
  background: var(--color-background);
  border-left: 4px solid var(--color-neon);
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-secondary);
}

.page-home .page-home-member-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.page-home .page-home-member-more {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-accent-moss);
  text-decoration: none;
  border-bottom: 2px solid var(--color-accent-moss);
}

/* ===== 反馈与下一步 ===== */
.page-home .page-home-feedback {
  position: relative;
  padding: 88px 0;
  background: var(--color-primary);
  color: var(--color-text-light);
  overflow: hidden;
}

.page-home .page-home-feedback::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 30%;
  background: repeating-linear-gradient(-55deg, transparent 0 20px, rgba(200, 241, 53, 0.04) 20px 21px);
  pointer-events: none;
}

.page-home .page-home-feedback-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-home .page-home-feedback-copy .lead {
  color: rgba(245, 240, 230, 0.84);
}

.page-home .page-home-feedback-contacts {
  margin: 24px 0 28px;
  padding-top: 18px;
  border-top: 1px solid rgba(245, 240, 230, 0.28);
}

.page-home .page-home-feedback-contacts p {
  margin: 6px 0;
  font-family: var(--font-mono);
  font-size: 14px;
  color: rgba(245, 240, 230, 0.82);
  line-height: 1.8;
}

.page-home .page-home-feedback-card {
  border: 2px solid var(--color-neon);
  background: rgba(6, 14, 26, 0.68);
  padding: 26px 22px;
  color: var(--color-text-light);
}

.page-home .page-home-feedback-card .feedback-title {
  margin-bottom: 8px;
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-neon);
}

.page-home .page-home-feedback-card-desc {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(245, 240, 230, 0.8);
}

.page-home .page-home-feedback-card .feedback-demo {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px dashed rgba(245, 240, 230, 0.3);
}

.page-home .page-home-feedback-card .feedback-label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: rgba(245, 240, 230, 0.78);
}

.page-home .page-home-feedback-card .feedback-field {
  display: block;
  width: 100%;
  box-sizing: border-box;
  padding: 12px;
  background: var(--color-primary-dark);
  border: 1px solid rgba(245, 240, 230, 0.4);
  color: var(--color-text-light);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.5;
  margin-bottom: 14px;
  resize: vertical;
}

.page-home .page-home-feedback-card .feedback-tip {
  display: block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-neon);
}

/* ===== 桌面断点 ===== */
@media (min-width: 1024px) {
  .page-home .page-home-hero {
    padding: 72px 0 88px;
  }

  .page-home .page-home-hero-grid {
    grid-template-columns: 5fr 7fr;
    gap: 40px;
  }

  .page-home .page-home-hero-actions {
    margin-top: 28px;
  }

  .page-home .page-home-data-grid {
    grid-template-columns: 5fr 7fr;
    gap: 64px;
    align-items: center;
  }

  .page-home .page-home-data-big .data-num {
    font-size: 220px;
  }

  .page-home .page-home-member-grid {
    grid-template-columns: 5fr 7fr;
    gap: 56px;
  }

  .page-home .page-home-feedback-grid {
    grid-template-columns: 6fr 6fr;
    gap: 48px;
  }
}