/* ========== PAGE: about 品牌档案 ========== */

.page-about {
  --about-mono: var(--font-mono);
  --about-glow-blue: rgba(0, 180, 255, 0.20);
  background: var(--c-bg);
  color: var(--c-text);
  overflow-x: hidden;
}

.page-about .container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

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

.page-about .section-head {
  display: flex;
  gap: clamp(14px, 2vw, 24px);
  align-items: flex-start;
  margin-bottom: clamp(32px, 5vw, 56px);
}

.page-about .section-index {
  font-family: var(--about-mono);
  font-size: clamp(20px, 3vw, 32px);
  font-weight: 700;
  color: var(--c-secondary);
  line-height: 1;
  flex-shrink: 0;
  padding-top: 6px;
}

.page-about .section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4.5vw, 46px);
  line-height: 1.08;
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}

.page-about .section-desc {
  color: var(--c-text-mid);
  font-size: 15px;
  line-height: 1.7;
  margin: 0;
}

/* ---------- Hero 首屏 ---------- */

.about-hero {
  position: relative;
  padding: clamp(48px, 7vw, 96px) 0 clamp(40px, 6vw, 72px);
  background:
    radial-gradient(ellipse 80% 60% at 72% 18%, rgba(0, 180, 255, 0.16), transparent 62%),
    linear-gradient(135deg, var(--c-bg) 0%, #0D1526 58%, var(--c-bg) 100%);
  border-bottom: 1px solid var(--c-border);
}

.about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(90deg, transparent 0, transparent 96px, rgba(0, 180, 255, 0.025) 96px, rgba(0, 180, 255, 0.025) 97px);
  pointer-events: none;
  z-index: 0;
}

.about-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
}

.about-hero-copy {
  order: 2;
}

.about-hero-visual {
  order: 1;
  position: relative;
  max-width: 360px;
  margin-inline: auto;
}

.about-hero-img {
  width: 100%;
  border-radius: 4px;
  border: 1px solid var(--c-border);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

.about-hero-visual::after {
  content: "";
  position: absolute;
  right: -14px;
  bottom: -14px;
  width: 60%;
  height: 60%;
  border-right: 2px solid var(--c-primary);
  border-bottom: 2px solid var(--c-secondary);
  border-radius: 0 0 6px 0;
  z-index: -1;
  opacity: 0.6;
}

.about-hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--about-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-text-mid);
  border: 1px solid var(--c-border);
  padding: 8px 14px;
  margin-bottom: clamp(20px, 3vw, 32px);
  background: rgba(17, 24, 39, 0.6);
}

.about-hero-live {
  width: 8px;
  height: 8px;
  background: var(--c-secondary);
  border-radius: 50%;
  animation: about-pulse 1.6s ease-in-out infinite;
}

@keyframes about-pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(57, 255, 20, 0.55); }
  50% { opacity: 0.72; box-shadow: 0 0 0 7px rgba(57, 255, 20, 0); }
}

.about-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(38px, 6vw, 72px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0 0 20px;
}

.about-hero-sub {
  display: block;
  margin-top: 10px;
  background: linear-gradient(92deg, var(--c-primary) 0%, var(--c-secondary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-size: clamp(20px, 3vw, 34px);
  letter-spacing: -0.01em;
}

.about-hero-lead {
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.8;
  color: var(--c-text-mid);
  max-width: 640px;
  margin: 0 0 28px;
}

.about-hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  max-width: 520px;
  margin-bottom: 28px;
}

.about-hero-stat {
  background: rgba(17, 24, 39, 0.72);
  border: 1px solid var(--c-border);
  border-left: 2px solid var(--c-primary);
  padding: 14px 12px;
  border-radius: 2px;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.about-hero-stat:hover {
  border-left-color: var(--c-secondary);
  background: rgba(26, 34, 52, 0.85);
}

.about-hero-stat-num {
  display: block;
  font-family: var(--about-mono);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  color: var(--c-text);
  line-height: 1.1;
}

.about-hero-stat-label {
  display: block;
  font-size: 12px;
  color: var(--c-text-low);
  margin-top: 4px;
  letter-spacing: 0.02em;
}

.about-hero-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin: 0;
  font-family: var(--about-mono);
  font-size: 13px;
}

.about-hero-nav a {
  color: var(--c-text-mid);
  text-decoration: none;
  border-bottom: 1px dashed var(--c-border);
  padding-bottom: 2px;
  transition: color 0.3s ease, border-color 0.3s ease;
}

.about-hero-nav a:hover {
  color: var(--c-secondary);
  border-color: var(--c-secondary);
}

.about-hero-stripe {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 3px;
  background: linear-gradient(90deg, var(--c-primary) 0%, var(--c-secondary) 55%, transparent 100%);
  opacity: 0.9;
}

/* ---------- 品牌故事 ---------- */

.about-story {
  padding: var(--section-space) 0;
  background: var(--c-bg);
}

.about-story-grid {
  max-width: 880px;
  margin-left: auto;
  margin-right: auto;
}

.about-timeline {
  position: relative;
  margin: 0;
  padding-left: clamp(18px, 3vw, 28px);
}

.about-timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--c-primary), var(--c-secondary), var(--c-border) 90%);
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  margin-bottom: clamp(18px, 2.5vw, 28px);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--c-border);
  border-radius: 4px;
  padding: clamp(16px, 2vw, 22px) clamp(14px, 2vw, 22px);
  transition: border-color 0.35s ease, box-shadow 0.35s ease, transform 0.35s ease;
}

.timeline-item:hover {
  border-color: rgba(0, 180, 255, 0.5);
  box-shadow: 0 0 28px var(--c-glow);
  transform: translateX(4px);
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: calc(-1 * clamp(18px, 3vw, 28px) - 9px);
  top: 22px;
  width: 14px;
  height: 14px;
  background: var(--c-bg);
  border: 3px solid var(--c-secondary);
  border-radius: 50%;
  box-shadow: 0 0 14px rgba(57, 255, 20, 0.4);
}

.timeline-marker {
  font-family: var(--about-mono);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  color: var(--c-primary);
  line-height: 1;
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}

.timeline-body h3 {
  font-size: clamp(17px, 2vw, 20px);
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.timeline-body p {
  margin: 0;
  color: var(--c-text-mid);
  font-size: 14px;
  line-height: 1.75;
}

/* ---------- 数据能力 ---------- */

.about-data {
  position: relative;
  padding: var(--section-space) 0;
  background: linear-gradient(180deg, var(--c-bg) 0%, var(--c-surface) 100%);
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}

.about-data-band {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--c-secondary), transparent);
  opacity: 0.7;
}

.about-data-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  margin-bottom: clamp(24px, 3vw, 36px);
}

.about-data-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.data-stat {
  position: relative;
  background: rgba(10, 14, 23, 0.72);
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-secondary);
  padding: clamp(16px, 2vw, 22px);
  border-radius: 2px;
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.data-stat:hover {
  transform: translateX(6px);
  border-left-color: var(--c-primary);
}

.data-stat-num {
  display: block;
  font-family: var(--about-mono);
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 700;
  line-height: 1;
  color: var(--c-text);
}

.data-stat-tag {
  display: inline-block;
  margin-top: 8px;
  padding: 4px 10px;
  font-family: var(--about-mono);
  font-size: 12px;
  color: var(--c-primary);
  background: rgba(0, 180, 255, 0.08);
  border: 1px solid rgba(0, 180, 255, 0.2);
  border-radius: 2px;
}

.data-stat-desc {
  display: block;
  margin-top: 10px;
  color: var(--c-text-mid);
  font-size: 14px;
  line-height: 1.7;
}

.about-data-chart {
  position: relative;
  border: 1px solid var(--c-border);
  border-radius: 4px;
  background: var(--c-bg);
  overflow: hidden;
}

.about-data-chart img {
  width: 100%;
}

.about-data-chart::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 180, 255, 0.08), transparent 40%);
  pointer-events: none;
}

.about-data-note {
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-text-mid);
  border-top: 1px solid var(--c-border);
  padding-top: 24px;
  margin: 0;
  max-width: 820px;
}

.about-inline-link {
  display: inline-block;
  margin-left: 12px;
  color: var(--c-secondary);
  text-decoration: none;
  font-family: var(--about-mono);
  font-size: 13px;
  border-bottom: 1px solid rgba(57, 255, 20, 0.35);
  padding-bottom: 2px;
  transition: border-color 0.3s ease;
}

.about-inline-link:hover {
  border-bottom-color: var(--c-secondary);
}

/* ---------- 服务承诺 ---------- */

.about-commitment {
  padding: var(--section-space) 0;
  background: var(--c-bg);
}

.about-commitment-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 20px);
}

.commitment-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px 20px;
  border: 1px solid var(--c-border);
  border-radius: 4px;
  background: rgba(17, 24, 39, 0.5);
  padding: clamp(20px, 3vw, 30px);
  transition: box-shadow 0.35s ease, border-color 0.35s ease;
}

.commitment-row:hover {
  border-color: rgba(0, 180, 255, 0.4);
  box-shadow: 0 0 30px var(--c-glow);
}

.commitment-row-num {
  font-family: var(--about-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--c-accent);
  line-height: 1;
}

.commitment-row-body h3 {
  font-size: clamp(18px, 2.2vw, 23px);
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}

.commitment-row-body p {
  margin: 0;
  color: var(--c-text-mid);
  font-size: 15px;
  line-height: 1.8;
}

.commitment-row-tag {
  justify-self: start;
  font-family: var(--about-mono);
  font-size: 12px;
  color: var(--c-primary);
  border: 1px solid rgba(0, 180, 255, 0.25);
  background: rgba(0, 180, 255, 0.06);
  padding: 5px 12px;
  border-radius: 2px;
  letter-spacing: 0.04em;
}

.about-commitment-more {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 32px;
}

.about-commitment-more a {
  color: var(--c-secondary);
  text-decoration: none;
  font-family: var(--about-mono);
  font-size: 14px;
  border-bottom: 1px solid rgba(57, 255, 20, 0.4);
  padding-bottom: 3px;
  transition: color 0.3s ease, border-color 0.3s ease;
}

.about-commitment-more a:hover {
  color: var(--c-text);
  border-color: var(--c-text-mid);
}

/* ---------- 资质认证 ---------- */

.about-certification {
  padding: var(--section-space) 0;
  background: linear-gradient(160deg, var(--c-surface) 0%, var(--c-bg) 70%);
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}

.about-cert-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 20px);
}

.about-cert-card {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  border: 1px solid var(--c-border);
  border-radius: 4px;
  background: rgba(10, 14, 23, 0.66);
  padding: clamp(20px, 2.5vw, 28px);
  transition: border-color 0.35s ease, box-shadow 0.35s ease;
}

.about-cert-card:hover {
  border-color: rgba(255, 215, 0, 0.45);
  box-shadow: 0 0 24px rgba(255, 215, 0, 0.08);
}

.about-cert-symbol {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 3px;
  font-family: var(--about-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--c-accent);
  background: rgba(255, 215, 0, 0.07);
  border: 1px solid rgba(255, 215, 0, 0.25);
}

.about-cert-body h3 {
  font-size: clamp(16px, 1.8vw, 19px);
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.about-cert-body p {
  margin: 0;
  color: var(--c-text-mid);
  font-size: 14px;
  line-height: 1.7;
}

.about-cert-note {
  margin-top: 28px;
  font-size: 13px;
  color: var(--c-text-low);
  line-height: 1.7;
  border-left: 2px solid var(--c-accent);
  padding-left: 14px;
  max-width: 720px;
}

/* ---------- 团队与文化 ---------- */

.about-team {
  padding: var(--section-space) 0;
  background: var(--c-bg);
}

.about-team-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 56px);
  align-items: center;
}

.about-team-copy > p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-text-mid);
  margin: 0 0 20px;
}

.about-team-points {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.about-team-points li {
  position: relative;
  padding-left: 20px;
  color: var(--c-text);
  font-size: 14px;
  line-height: 1.7;
  border-bottom: 1px dashed var(--c-border);
  padding-bottom: 10px;
}

.about-team-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  background: var(--c-primary);
  transform: rotate(45deg);
  box-shadow: 0 0 8px rgba(0, 180, 255, 0.4);
}

.about-team-link {
  display: inline-block;
  color: var(--c-secondary);
  text-decoration: none;
  font-family: var(--about-mono);
  font-size: 14px;
  border: 1px solid rgba(57, 255, 20, 0.35);
  padding: 10px 18px;
  border-radius: 2px;
  transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.about-team-link:hover {
  background: rgba(57, 255, 20, 0.08);
  border-color: var(--c-secondary);
  color: var(--c-text);
}

.about-team-visual {
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--c-border);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

.about-team-visual img {
  width: 100%;
}

.about-team-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 40%, rgba(57, 255, 20, 0.08) 50%, transparent 60%);
  background-size: 250% 100%;
  animation: about-scan 4s ease-in-out infinite;
  pointer-events: none;
}

@keyframes about-scan {
  0% { background-position: 120% 0; }
  100% { background-position: -80% 0; }
}

/* ---------- 底部信任区 ---------- */

.about-trust {
  padding: clamp(40px, 5vw, 64px) 0;
  background:
    radial-gradient(ellipse 50% 100% at 50% 100%, rgba(0, 180, 255, 0.10), transparent 70%),
    var(--c-surface);
  border-top: 1px solid var(--c-border);
}

.about-trust-inner {
  text-align: center;
}

.about-trust-text {
  font-size: clamp(15px, 1.8vw, 18px);
  line-height: 1.8;
  color: var(--c-text-mid);
  max-width: 760px;
  margin: 0 auto 24px;
}

.about-trust-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
  margin: 0;
}

.about-trust-links a {
  color: var(--c-primary);
  text-decoration: none;
  font-family: var(--about-mono);
  font-size: 14px;
  border-bottom: 1px solid rgba(0, 180, 255, 0.4);
  padding-bottom: 3px;
  transition: color 0.3s ease, border-color 0.3s ease;
}

.about-trust-links a:hover {
  color: var(--c-secondary);
  border-color: var(--c-secondary);
}

/* ---------- 桌面端调整 ---------- */

@media (min-width: 768px) {
  .about-hero-inner {
    grid-template-columns: 1.1fr 0.9fr;
  }
  .about-hero-copy {
    order: 1;
  }
  .about-hero-visual {
    order: 2;
    max-width: 440px;
    margin-left: auto;
  }
  .about-hero-stats {
    gap: 16px;
  }
  .about-data-stats {
    grid-template-columns: 1fr;
  }
  .about-commitment-list {
    gap: 16px;
  }
  .commitment-row {
    grid-template-columns: 56px 1fr auto;
    align-items: start;
  }
  .commitment-row-tag {
    margin-top: 4px;
  }
  .about-cert-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .about-team-layout {
    grid-template-columns: 1fr 1fr;
  }
  .about-team-copy {
    order: 1;
  }
  .about-team-visual {
    order: 2;
  }
}

@media (min-width: 1024px) {
  .about-data-panel {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
  .about-timeline {
    padding-left: 36px;
  }
  .timeline-item::before {
    left: -41px;
  }
  .about-cert-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .about-team-layout {
    gap: 72px;
  }
  .about-hero-lead {
    max-width: 620px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}