/* ====== 关于我们页样式 ====== */

/* ====== Hero ====== */
.about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(7rem, 14vw, 10rem) 0 clamp(3rem, 6vw, 5rem);
  background: linear-gradient(168deg, #020617 0%, #0f172a 30%, #1e1b4b 65%, #0c0a1d 100%);
  color: #e2e8f0;
}

.about-hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 50% 45% at 20% 30%, rgba(6, 182, 212, 0.1), transparent 50%),
    radial-gradient(ellipse 45% 40% at 80% 70%, rgba(168, 85, 247, 0.08), transparent 50%);
}

.about-hero__grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.2;
  background-image:
    linear-gradient(rgba(99, 102, 241, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 102, 241, 0.08) 1px, transparent 1px);
  background-size: 56px 56px;
}

.about-hero__orbs {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.about-hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
}

.about-hero__orb--1 {
  width: 320px;
  height: 320px;
  top: -5%;
  right: 10%;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.3), transparent 65%);
  animation: about-orb-float 12s ease-in-out infinite alternate;
}

.about-hero__orb--2 {
  width: 260px;
  height: 260px;
  bottom: 5%;
  left: 5%;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.25), transparent 65%);
  animation: about-orb-float 10s ease-in-out 2s infinite alternate-reverse;
}

@keyframes about-orb-float {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(25px, -20px) scale(1.12); }
}

.about-hero__inner {
  position: relative;
  z-index: 1;
  text-align: center;
}

.about-hero__eyebrow {
  display: inline-block;
  font-family: ui-monospace, "Cascadia Code", "Consolas", monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--neo-cyan);
  padding: 0.25rem 0.85rem;
  border: 1px solid rgba(34, 211, 238, 0.3);
  border-radius: 4px;
  background: rgba(34, 211, 238, 0.08);
  margin-bottom: 1.5rem;
}

.about-hero__title {
  margin: 0 0 1.25rem;
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 900;
  color: #fff;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.about-hero__lead {
  max-width: 44rem;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.8;
  color: #94a3b8;
}

/* ====== 通用区段 ====== */
.about-section {
  padding: clamp(3rem, 6vw, 5rem) 0;
}

.about-section__header {
  text-align: center;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.about-section__tag {
  display: inline-block;
  font-family: ui-monospace, "Cascadia Code", "Consolas", monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 0.2rem 0.7rem;
  border: 1px solid rgba(6, 182, 212, 0.2);
  border-radius: 4px;
  background: rgba(6, 182, 212, 0.06);
  margin-bottom: 0.85rem;
}

.about-section__title {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 900;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.about-section__desc {
  max-width: 38rem;
  margin: 0.75rem auto 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

/* ====== 产品定位 Mission ====== */
.about-mission {
  background: linear-gradient(180deg, #f0fdfa 0%, #ecfeff 50%, #f8fafc 100%);
}

.about-mission__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

@media (max-width: 768px) {
  .about-mission__grid {
    grid-template-columns: 1fr;
  }
}

.about-mission__text p {
  margin: 0 0 1rem;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.about-mission__text strong {
  color: var(--ink);
  font-weight: 700;
}

.about-mission__visual {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.about-mission__card {
  padding: 1.25rem 1.5rem;
  border-radius: 14px;
  background: #fff;
  border: 1px solid rgba(6, 182, 212, 0.12);
  box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.2s;
}

.about-mission__card:hover {
  border-color: rgba(6, 182, 212, 0.35);
  box-shadow: 0 8px 24px rgba(6, 182, 212, 0.08);
  transform: translateY(-2px);
}

.about-mission__card-icon {
  font-size: 28px;
  flex-shrink: 0;
}

.about-mission__card-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.about-mission__card strong {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  margin-top: 0.15rem;
}

/* ====== 核心能力 ====== */
.about-capabilities {
  background: linear-gradient(180deg, #f8fafc 0%, #fff 40%, #f5f3ff 100%);
}

.about-cap__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.25rem;
}

@media (max-width: 1024px) {
  .about-cap__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 640px) {
  .about-cap__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.about-cap__item {
  padding: 1.5rem 1.25rem;
  border-radius: 14px;
  background: #fff;
  border: 1px solid rgba(14, 165, 233, 0.1);
  box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1), transform 0.6s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.25s, box-shadow 0.25s;
}

.about-cap__item.about-revealed {
  opacity: 1;
  transform: translateY(0);
}

.about-cap__item:hover {
  border-color: rgba(6, 182, 212, 0.3);
  box-shadow: 0 8px 28px rgba(6, 182, 212, 0.09);
}

.about-cap__item--accent {
  background: linear-gradient(145deg, rgba(6, 182, 212, 0.04), rgba(99, 102, 241, 0.04));
  border-color: rgba(6, 182, 212, 0.18);
}

.about-cap__num {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  color: rgba(6, 182, 212, 0.2);
  margin-bottom: 0.5rem;
  line-height: 1;
}

.about-cap__item h3 {
  margin: 0 0 0.5rem;
  font-size: 15px;
  font-weight: 800;
  color: var(--ink);
}

.about-cap__item p {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ====== 数据实力 ====== */
.about-stats {
  background: linear-gradient(168deg, #020617 0%, #0f172a 40%, #1e1b4b 100%);
  color: #e2e8f0;
}

.about-stats .about-section__tag {
  color: var(--neo-cyan);
  border-color: rgba(34, 211, 238, 0.3);
  background: rgba(34, 211, 238, 0.08);
}

.about-stats .about-section__title {
  color: #fff;
}

.about-stats__grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1.5rem;
  text-align: center;
}

@media (max-width: 860px) {
  .about-stats__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 480px) {
  .about-stats__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.about-stats__item {
  padding: 1.5rem 0.5rem;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(99, 102, 241, 0.15);
}

.about-stats__number {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 700;
  color: var(--neo-cyan);
  line-height: 1;
  display: inline;
}

.about-stats__unit {
  display: inline;
  font-size: 14px;
  font-weight: 600;
  color: var(--neo-cyan);
  opacity: 0.7;
  margin-left: 2px;
}

.about-stats__label {
  margin-top: 0.6rem;
  font-size: 13px;
  font-weight: 500;
  color: #94a3b8;
}

/* ====== 核心优势 ====== */
.about-advantages {
  background: linear-gradient(180deg, #f0fdfa 0%, #fff 60%, #ecfeff 100%);
}

.about-adv__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (max-width: 768px) {
  .about-adv__grid {
    grid-template-columns: 1fr;
  }
}

.about-adv__card {
  padding: 2rem 1.75rem;
  border-radius: 16px;
  background: #fff;
  border: 1px solid rgba(14, 165, 233, 0.1);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.05);
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1), transform 0.6s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.3s, box-shadow 0.3s;
}

.about-adv__card.about-revealed {
  opacity: 1;
  transform: translateY(0);
}

.about-adv__card:hover {
  border-color: rgba(6, 182, 212, 0.3);
  box-shadow: 0 12px 36px rgba(6, 182, 212, 0.1);
}

.about-adv__icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.08), rgba(99, 102, 241, 0.08));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.about-adv__card h3 {
  margin: 0 0 0.65rem;
  font-size: 17px;
  font-weight: 800;
  color: var(--ink);
}

.about-adv__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ====== 发展历程 Timeline ====== */
.about-timeline {
  background: linear-gradient(180deg, #f8fafc 0%, #fff 50%, #f0fdfa 100%);
}

.about-tl {
  position: relative;
  max-width: 680px;
  margin: 0 auto;
  padding-left: 2.5rem;
}

.about-tl__line {
  position: absolute;
  left: 11px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, rgba(6, 182, 212, 0.35), rgba(99, 102, 241, 0.2), rgba(168, 85, 247, 0.15));
  border-radius: 2px;
}

.about-tl__item {
  position: relative;
  padding-bottom: 2rem;
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1), transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.about-tl__item.about-revealed {
  opacity: 1;
  transform: translateX(0);
}

.about-tl__item:last-child {
  padding-bottom: 0;
}

.about-tl__dot {
  position: absolute;
  left: -2.5rem;
  top: 0.25rem;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, #06b6d4, #6366f1);
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px rgba(6, 182, 212, 0.2), 0 2px 8px rgba(6, 182, 212, 0.15);
}

.about-tl__card {
  padding: 1.25rem 1.5rem;
  border-radius: 14px;
  background: #fff;
  border: 1px solid rgba(14, 165, 233, 0.1);
  box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
}

.about-tl__year {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  background: rgba(6, 182, 212, 0.08);
  padding: 0.12rem 0.6rem;
  border-radius: 6px;
  margin-bottom: 0.4rem;
}

.about-tl__card h3 {
  margin: 0.25rem 0 0.4rem;
  font-size: 16px;
  font-weight: 800;
  color: var(--ink);
}

.about-tl__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ====== 服务承诺 ====== */
.about-promise {
  background: linear-gradient(180deg, #ecfeff 0%, #f0fdfa 50%, #f8fafc 100%);
}

.about-promise__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (max-width: 640px) {
  .about-promise__grid {
    grid-template-columns: 1fr;
  }
}

.about-promise__card {
  padding: 2rem 1.75rem;
  border-radius: 16px;
  text-align: center;
  background: #fff;
  border: 1px solid rgba(6, 182, 212, 0.12);
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1), transform 0.6s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.25s, box-shadow 0.25s;
}

.about-promise__card.about-revealed {
  opacity: 1;
  transform: translateY(0);
}

.about-promise__card:hover {
  border-color: rgba(6, 182, 212, 0.3);
  box-shadow: 0 8px 28px rgba(6, 182, 212, 0.09);
}

.about-promise__icon {
  font-size: 36px;
  margin-bottom: 1rem;
}

.about-promise__card h3 {
  margin: 0 0 0.6rem;
  font-size: 17px;
  font-weight: 800;
  color: var(--ink);
}

.about-promise__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ====== CTA 按钮组 ====== */
.about-cta__btns {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ====== 无障碍 ====== */
@media (prefers-reduced-motion: reduce) {
  .about-cap__item,
  .about-adv__card,
  .about-tl__item,
  .about-promise__card {
    opacity: 1;
    transform: none;
    transition: border-color 0.3s, box-shadow 0.3s;
  }

  .about-hero__orb {
    animation: none;
  }
}