.page-about {
  --about-gold: #E8A838;
  --about-rose: #E5544D;
  background: var(--paper);
}

/* ===== 首屏 ===== */
.page-about .about-hero {
  position: relative;
  padding: 2.5rem 0 4.5rem;
  overflow: hidden;
  background: radial-gradient(ellipse at 84% 16%, rgba(232, 168, 56, 0.16) 0%, transparent 44%), radial-gradient(ellipse at 8% 86%, rgba(107, 181, 165, 0.14) 0%, transparent 48%), var(--paper);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, var(--spring) 0 25%, var(--summer) 25% 50%, var(--autumn) 50% 75%, var(--winter) 75% 100%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -3rem;
  bottom: -5rem;
  width: 17rem;
  height: 17rem;
  border-radius: 50%;
  background: linear-gradient(145deg, rgba(26, 26, 26, 0.07), rgba(26, 26, 26, 0.02));
  pointer-events: none;
}

.page-about .about-hero-inner {
  position: relative;
  z-index: 1;
}

.page-about .about-hero-eyebrow {
  margin: 0 0 1.1rem;
  font-family: var(--sans);
  font-size: 0.8125rem;
  letter-spacing: 0.24em;
  color: var(--muted);
}

.page-about .about-hero-title {
  margin: 0 0 1.2rem;
  font-family: var(--serif-display);
  font-weight: 700;
  font-size: clamp(2.5rem, 7vw, 4.8rem);
  line-height: 1.12;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-about .about-hero-lead {
  max-width: 40rem;
  margin: 0 0 2.6rem;
  font-family: var(--serif-text);
  font-size: 1.0625rem;
  line-height: 2;
  color: var(--ink);
}

.page-about .about-season-marks {
  display: flex;
  gap: 0.85rem;
}

.page-about .about-season-mark {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 0.375rem;
  transition: transform 0.25s ease;
}

.page-about .about-season-mark:hover {
  transform: rotate(16deg) scale(1.05);
}

.page-about .about-season-mark-spring { background: var(--spring); }
.page-about .about-season-mark-summer { background: var(--summer); }
.page-about .about-season-mark-autumn { background: var(--autumn); }
.page-about .about-season-mark-winter { background: var(--winter); }

/* ===== 品牌起源 ===== */
.page-about .about-origin {
  background: linear-gradient(180deg, var(--paper) 0%, rgba(107, 181, 165, 0.08) 100%);
}

.page-about .about-origin-grid {
  display: grid;
  gap: 2.2rem;
  margin-top: 2.6rem;
  align-items: center;
}

.page-about .about-origin-text {
  font-family: var(--serif-text);
  font-size: 1rem;
  line-height: 2.05;
  color: var(--ink);
}

.page-about .about-origin-text p {
  margin: 0 0 1.2rem;
}

.page-about .about-origin-figure {
  margin: 0;
  border-radius: 0.875rem;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.page-about .about-origin-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ===== 发展里程碑 ===== */
.page-about .about-milestones {
  background: linear-gradient(135deg, #1A1A1A 0%, #333333 100%);
  color: var(--paper);
}

.page-about .about-milestones .section-index,
.page-about .about-milestones .section-title {
  color: var(--paper);
}

.page-about .about-milestones .section-lead {
  color: rgba(248, 245, 239, 0.68);
}

.page-about .about-milestones-layout {
  margin-top: 2rem;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 2rem 0 0;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 0.75rem;
  top: 1.75rem;
  bottom: 1.5rem;
  width: 2px;
  background: linear-gradient(180deg, rgba(232, 168, 56, 0.9) 0%, rgba(232, 168, 56, 0.2) 100%);
}

.page-about .about-timeline-item {
  position: relative;
  padding: 0 0 2.4rem 2.65rem;
}

.page-about .about-timeline-item:last-child {
  padding-bottom: 0;
}

.page-about .about-timeline-marker {
  position: absolute;
  left: 0.3rem;
  top: 0.28rem;
  width: 0.875rem;
  height: 0.875rem;
  border: 3px solid var(--autumn);
  border-radius: 50%;
  background: #1A1A1A;
  box-shadow: 0 0 0 4px rgba(232, 168, 56, 0.16);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.page-about .about-timeline-item:hover .about-timeline-marker,
.page-about .about-timeline-item:focus-within .about-timeline-marker {
  transform: scale(1.18);
  border-color: #F4C968;
}

.page-about .about-timeline-year {
  display: inline-block;
  margin-bottom: 0.6rem;
  padding: 0.22rem 0.7rem;
  font-family: var(--sans);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--autumn);
  border: 1px solid rgba(232, 168, 56, 0.5);
  border-radius: 999px;
  background: rgba(232, 168, 56, 0.08);
  transition: background 0.25s ease;
}

.page-about .about-timeline-item:hover .about-timeline-year {
  background: rgba(232, 168, 56, 0.16);
}

.page-about .about-timeline-title {
  margin: 0 0 0.5rem;
  font-family: var(--serif-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-version {
  font-family: var(--sans);
  font-size: 0.95em;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--summer);
}

.page-about .about-timeline-text {
  margin: 0;
  font-family: var(--serif-text);
  font-size: 0.95rem;
  line-height: 1.85;
  color: rgba(248, 245, 239, 0.7);
}

.page-about .about-milestones-figure {
  margin: 2.5rem 0 0;
  border-radius: 0.875rem;
  overflow: hidden;
  border: 1px solid rgba(248, 245, 239, 0.16);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.3);
}

.page-about .about-milestones-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ===== 团队与理念 ===== */
.page-about .about-team {
  background: radial-gradient(ellipse at 8% 18%, rgba(123, 155, 184, 0.1) 0%, transparent 44%), var(--paper);
}

.page-about .about-team-grid {
  display: grid;
  gap: 2.2rem;
  margin-top: 2.6rem;
  align-items: center;
}

.page-about .about-team-figure {
  margin: 0;
  border-radius: 0.875rem;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.page-about .about-team-figure img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-team-paragraph {
  margin: 0 0 1.1rem;
  font-family: var(--serif-text);
  font-size: 1rem;
  line-height: 2.05;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.1rem 1.5rem;
  margin: 1.7rem 0 1.9rem;
  padding: 1.2rem 1.35rem;
  background: rgba(123, 155, 184, 0.1);
  border-left: 4px solid var(--winter);
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.page-about .about-stat-num {
  font-family: var(--serif-display);
  font-size: 1.7rem;
  line-height: 1.15;
  color: var(--ink);
}

.page-about .about-stat-label {
  font-family: var(--sans);
  font-size: 0.781rem;
  letter-spacing: 0.05em;
  color: var(--muted);
}

/* ===== 品牌核心板块 ===== */
.page-about .about-cores {
  background: linear-gradient(180deg, rgba(123, 155, 184, 0.08) 0%, var(--paper) 100%);
}

.page-about .about-core-grid {
  display: grid;
  gap: 1.5rem;
  margin-top: 2.6rem;
}

.page-about .about-core-card {
  position: relative;
  padding: 2rem 1.75rem;
  border-radius: 0.875rem;
  background: var(--glass);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.page-about .about-core-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 44px rgba(26, 26, 26, 0.12);
}

.page-about .about-core-card-summer {
  border-top: 4px solid var(--summer);
}

.page-about .about-core-card-spring {
  border-top: 4px solid var(--spring);
}

.page-about .about-core-tag {
  margin-bottom: 1rem;
}

/* ===== 联系邀请 ===== */
.page-about .about-cta {
  padding: 4rem 0;
  background: radial-gradient(ellipse at 50% 120%, rgba(232, 168, 56, 0.14) 0%, transparent 50%), linear-gradient(135deg, #1A1A1A 0%, #333333 100%);
  color: var(--paper);
}

.page-about .about-cta-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
  text-align: center;
}

.page-about .about-cta-title {
  margin: 0;
  font-family: var(--serif-display);
  font-size: clamp(1.55rem, 3.4vw, 2.3rem);
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-cta-text {
  margin: 0;
  font-family: var(--serif-text);
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(248, 245, 239, 0.74);
}

.page-about .about-trust-note {
  margin-top: 1.4rem;
  color: rgba(248, 245, 239, 0.5);
  font-size: 0.8125rem;
}

/* ===== 桌面端适配 ===== */
@media (min-width: 48rem) {
  .page-about .about-hero {
    padding-top: 3.5rem;
    padding-bottom: 6rem;
  }

  .page-about .about-origin-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3.5rem;
  }

  .page-about .about-milestones-layout {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3.5rem;
    align-items: center;
  }

  .page-about .about-timeline {
    padding-top: 0;
  }

  .page-about .about-milestones-figure {
    margin-top: 0;
  }

  .page-about .about-team-grid {
    grid-template-columns: 0.95fr 1.05fr;
    gap: 3.5rem;
  }

  .page-about .about-stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-core-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }
}