.page-about {
  --tl-line: linear-gradient(180deg, var(--c-red) 0%, var(--c-blue) 55%, var(--c-green) 100%);
}

/* ===== Hero ===== */
.page-about .about-hero {
  position: relative;
  padding: 112px 0 56px;
  overflow: hidden;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: -15%;
  width: 70%;
  height: 100%;
  background: linear-gradient(135deg, transparent 20%, rgba(29, 111, 242, 0.15) 60%, rgba(230, 57, 70, 0.12) 100%);
  transform: skewX(-12deg);
  pointer-events: none;
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: 0;
  left: -10%;
  width: 45%;
  height: 100%;
  background: repeating-linear-gradient(115deg, transparent 0 18px, rgba(183, 227, 26, 0.04) 18px 20px);
  pointer-events: none;
}
.page-about .about-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--c-silver);
  text-transform: uppercase;
  margin: 0 0 16px;
}
.page-about .about-eyebrow-line {
  display: inline-block;
  width: 32px;
  height: 3px;
  background: var(--c-red);
  border-radius: 2px;
}
.page-about .about-hero .display-title {
  font-size: clamp(2.4rem, 8vw, 4rem);
  line-height: 1.08;
  font-weight: 900;
  transform: skewX(-6deg);
  margin: 0 0 8px;
}
.page-about .about-hero-lead {
  font-size: clamp(1.1rem, 3.4vw, 1.6rem);
  font-weight: 700;
  color: var(--c-text);
  margin: 0 0 16px;
  line-height: 1.4;
}
.page-about .about-hero-desc {
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-silver);
  max-width: 30em;
  margin: 0 0 28px;
}
.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}
.page-about .about-hero-visual {
  position: relative;
  margin-top: 36px;
}
.page-about .about-hero-visual::after {
  content: "";
  position: absolute;
  right: -8px;
  bottom: -8px;
  width: 56px;
  height: 56px;
  border-right: 4px solid var(--c-green);
  border-bottom: 4px solid var(--c-red);
  border-radius: 4px;
  pointer-events: none;
}
.page-about .about-hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-float);
}

/* ===== Origin ===== */
.page-about .about-origin {
  padding-top: 24px;
  padding-bottom: 40px;
}
.page-about .about-origin-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}
.page-about .about-origin-text p + p {
  margin-top: 16px;
}
.page-about .about-origin-aside {
  display: flex;
  align-items: flex-start;
  gap: 20px;
}
.page-about .about-origin-num {
  font-family: var(--font-num);
  font-size: 72px;
  font-weight: 700;
  font-style: italic;
  line-height: 0.9;
  color: rgba(230, 57, 70, 0.14);
  -webkit-text-stroke: 2px var(--c-red);
  transform: skewX(-6deg);
  flex-shrink: 0;
}
.page-about .about-origin-aside .card {
  padding: 20px 24px;
}

/* ===== Timeline ===== */
.page-about .about-timeline {
  position: relative;
  padding-top: 40px;
  padding-bottom: 56px;
}
.page-about .about-timeline-head {
  margin-bottom: 32px;
}
.page-about .about-timeline-list {
  position: relative;
  margin: 0;
  padding-left: 32px;
}
.page-about .about-timeline-list::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 20px;
  width: 3px;
  border-radius: 3px;
  background: var(--tl-line);
}
.page-about .about-tl-node {
  position: relative;
  padding: 0 0 28px;
}
.page-about .about-tl-marker {
  position: absolute;
  left: 1px;
  top: 26px;
  width: 16px;
  height: 16px;
  border-radius: 3px;
  transform: rotate(45deg);
  background: var(--c-blue);
  box-shadow: 0 0 0 4px rgba(13, 27, 42, 0.75);
  z-index: 2;
}
.page-about .about-tl-node:nth-child(1) .about-tl-marker {
  background: var(--c-red);
}
.page-about .about-tl-node:nth-child(2) .about-tl-marker {
  background: var(--c-blue);
}
.page-about .about-tl-node:nth-child(3) .about-tl-marker {
  background: var(--c-green);
}
.page-about .about-tl-node:nth-child(4) .about-tl-marker {
  background: var(--c-blue);
}
.page-about .about-tl-node:nth-child(5) .about-tl-marker {
  background: var(--c-orange);
}
.page-about .about-tl-node:nth-child(6) .about-tl-marker {
  background: var(--c-green);
  box-shadow: 0 0 0 4px rgba(13, 27, 42, 0.75), 0 0 16px rgba(183, 227, 26, 0.55);
}
.page-about .about-tl-card {
  background: rgba(27, 38, 59, 0.55);
  border: 1px solid rgba(197, 198, 199, 0.12);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  box-shadow: var(--shadow-card);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}
.page-about .about-tl-card:hover {
  border-color: rgba(183, 227, 26, 0.25);
}
.page-about .about-tl-year {
  font-family: var(--font-num);
  font-size: 32px;
  font-weight: 700;
  font-style: italic;
  line-height: 1;
  color: var(--c-text);
  transform: skewX(-6deg);
  margin-bottom: 8px;
}
.page-about .about-tl-card h3 {
  font-size: 18px;
  font-weight: 800;
  margin: 0 0 8px;
}
.page-about .about-tl-card p {
  font-size: 15px;
  line-height: 1.65;
  color: rgba(245, 240, 225, 0.85);
  margin: 0 0 12px;
}
.page-about .about-tl-img {
  margin: 12px 0;
}
.page-about .about-tl-img img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-md);
}

/* ===== Philosophy ===== */
.page-about .about-philosophy {
  position: relative;
  padding-top: 40px;
  padding-bottom: 56px;
  overflow: hidden;
}
.page-about .about-philosophy-banner {
  position: relative;
  margin: 32px 0 48px;
  padding: 32px 24px;
  background: linear-gradient(135deg, var(--c-surface), var(--c-bg) 65%, rgba(230, 57, 70, 0.12));
  border-left: 5px solid var(--c-red);
  border-right: 5px solid var(--c-blue);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.page-about .about-philosophy-banner::after {
  content: "GOAL";
  position: absolute;
  right: 16px;
  bottom: -8px;
  font-family: var(--font-num);
  font-size: 96px;
  font-weight: 900;
  font-style: italic;
  letter-spacing: 0.02em;
  color: rgba(255, 255, 255, 0.04);
  line-height: 1;
  transform: skewX(-6deg);
  pointer-events: none;
}
.page-about .about-philosophy-main {
  font-size: clamp(1.8rem, 6vw, 3rem);
  font-weight: 900;
  line-height: 1.3;
  color: var(--c-text);
  transform: skewX(-6deg);
  margin: 0 0 12px;
  position: relative;
  z-index: 1;
}
.page-about .about-philosophy-sub {
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-silver);
  max-width: 36em;
  margin: 0;
  position: relative;
  z-index: 1;
}
.page-about .about-philosophy-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
.page-about .about-philosophy-item {
  position: relative;
  padding: 24px;
  background: rgba(27, 38, 59, 0.5);
  border-radius: var(--radius-md);
  border: 1px solid rgba(197, 198, 199, 0.1);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.page-about .about-philosophy-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-float);
}
.page-about .about-philosophy-num {
  font-family: var(--font-num);
  font-size: 56px;
  font-weight: 700;
  font-style: italic;
  line-height: 1;
  color: var(--c-red);
  opacity: 0.8;
  transform: skewX(-6deg);
  margin-bottom: 12px;
}
.page-about .about-philosophy-item h3 {
  font-size: 20px;
  font-weight: 800;
  margin: 0 0 8px;
}
.page-about .about-philosophy-item p {
  font-size: 15px;
  line-height: 1.7;
  color: rgba(245, 240, 225, 0.82);
  margin: 0;
}

/* ===== Now / Data ===== */
.page-about .about-now {
  padding-top: 40px;
  padding-bottom: 56px;
}
.page-about .about-now-head {
  margin-bottom: 32px;
}
.page-about .about-now-head .arrow-link {
  margin-top: 12px;
  display: inline-block;
}
.page-about .bento-item {
  padding: 24px;
  min-height: 150px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}
.page-about .about-stat-label {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-silver);
  margin: 0 0 8px;
}
.page-about .stat-num {
  font-size: 48px;
  line-height: 1;
  font-weight: 700;
  color: var(--c-text);
  font-family: var(--font-num);
  font-style: italic;
  transform: skewX(-6deg);
  margin: 0 0 10px;
}
.page-about .bento-item p:last-child {
  font-size: 14px;
  color: rgba(245, 240, 225, 0.72);
  margin: 0;
  line-height: 1.6;
}
.page-about .about-now-visual {
  position: relative;
  margin-top: 32px;
}
.page-about .about-now-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(230, 57, 70, 0.14), transparent 50%, rgba(29, 111, 242, 0.14));
  border-radius: var(--radius-lg);
  pointer-events: none;
  z-index: 1;
}
.page-about .about-now-visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}
.page-about .about-trust {
  margin-top: 32px;
  padding: 24px;
  background: rgba(183, 227, 26, 0.06);
  border-left: 4px solid var(--c-green);
}
.page-about .about-trust p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-text);
}

/* ===== 移动端 Bento 网格堆叠 ===== */
@media (max-width: 768px) {
  .page-about .bento-item--span-3,
  .page-about .bento-item--span-4,
  .page-about .bento-item--span-5,
  .page-about .bento-item--span-6,
  .page-about .bento-item--span-7,
  .page-about .bento-item--span-8,
  .page-about .bento-item--span-12 {
    grid-column: 1 / -1;
  }
}

/* ===== 桌面端 ===== */
@media (min-width: 769px) {
  .page-about .about-hero-grid {
    display: grid;
    grid-template-columns: 5.2fr 6.8fr;
    align-items: center;
    gap: 56px;
  }
  .page-about .about-hero-visual {
    margin-top: 0;
  }

  .page-about .about-origin {
    padding-top: 32px;
    padding-bottom: 64px;
  }
  .page-about .about-origin-grid {
    display: grid;
    grid-template-columns: 7fr 4fr;
    gap: 64px;
    align-items: start;
  }
  .page-about .about-origin-aside {
    display: block;
    padding-top: 12px;
  }
  .page-about .about-origin-num {
    font-size: 120px;
    margin-bottom: 16px;
  }

  .page-about .about-timeline {
    padding-top: 56px;
    padding-bottom: 64px;
  }
  .page-about .about-timeline-list {
    padding-left: 0;
  }
  .page-about .about-timeline-list::before {
    left: 50%;
    transform: translateX(-50%);
  }
  .page-about .about-tl-node {
    width: 50%;
    padding: 0 64px 48px 0;
  }
  .page-about .about-tl-node:nth-child(even) {
    margin-left: 50%;
    padding: 0 0 48px 64px;
  }
  .page-about .about-tl-node:nth-child(odd) .about-tl-marker {
    left: auto;
    right: -8px;
  }
  .page-about .about-tl-node:nth-child(even) .about-tl-marker {
    left: -8px;
    right: auto;
  }
  .page-about .about-tl-card {
    padding: 26px 28px;
  }
  .page-about .about-tl-year {
    font-size: 40px;
  }

  .page-about .about-philosophy {
    padding-top: 56px;
    padding-bottom: 64px;
  }
  .page-about .about-philosophy-banner {
    padding: 48px 48px;
  }
  .page-about .about-philosophy-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }
  .page-about .about-philosophy-item {
    padding: 32px 28px;
  }

  .page-about .about-now {
    padding-top: 56px;
    padding-bottom: 56px;
  }
  .page-about .about-now-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
  }
  .page-about .about-now-head .arrow-link {
    margin-top: 0;
    margin-bottom: 6px;
  }
  .page-about .stat-num {
    font-size: 56px;
  }
  .page-about .bento-item {
    min-height: 170px;
  }
  .page-about .about-trust {
    padding: 28px 32px;
  }
}