/* About page: original editorial layout for 通秒营销.
   Global navigation and footer remain shared with the rest of the website. */

.about-reference-page {
  --about-ink: #080d19;
  --about-paper: #ffffff;
  --about-soft: #f4f6f9;
  --about-gold: #e3b52e;
  --about-gold-deep: #a87500;
  --about-text: #111827;
  --about-copy: #4b5565;
  --about-line: #dfe4ec;
  background: var(--about-paper);
}

.about-reference-page .bg-grid,
.about-reference-page .bg-glow { display: none; }

/* Hero: a 15-year capability journey, not a decorative statistics panel. */
.about-reference-page .about-hero {
  position: relative;
  overflow: hidden;
  min-height: 570px;
  padding: 148px 0 88px;
  background: var(--about-ink);
  color: #fff;
}

.about-reference-page .about-hero::before {
  content: "";
  position: absolute;
  top: 64px;
  right: -120px;
  width: 640px;
  height: 640px;
  border: 1px solid rgba(227, 181, 46, 0.14);
  border-radius: 50%;
  box-shadow: 0 0 0 92px rgba(227, 181, 46, 0.035), 0 0 0 184px rgba(227, 181, 46, 0.018);
  pointer-events: none;
}

.about-reference-page .about-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(227, 181, 46, 0.7), transparent);
}

.about-reference-page .about-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(420px, 0.95fr);
  align-items: center;
  gap: clamp(64px, 7vw, 120px);
  width: min(1440px, calc(100% - 96px));
  margin: 0 auto;
  text-align: left;
}

.about-reference-page .about-hero-copy { max-width: 690px; }

.about-reference-page .about-title {
  margin: 0;
  color: #fff;
  font-size: clamp(58px, 5vw, 78px);
  font-weight: 760;
  line-height: 1.04;
  letter-spacing: -0.055em;
}

.about-reference-page .about-subtitle {
  margin: 18px 0 0;
  color: var(--about-gold);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.22em;
}

.about-reference-page .about-hero-lead {
  max-width: 620px;
  margin: 32px 0 0;
  color: rgba(235, 240, 249, 0.74);
  font-size: 18px;
  line-height: 1.9;
  text-wrap: pretty;
}

.about-reference-page .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

.about-reference-page .about-action {
  display: inline-flex;
  min-width: 154px;
  height: 50px;
  padding: 0 24px;
  align-items: center;
  justify-content: center;
  gap: 12px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 650;
  letter-spacing: 0.02em;
  transition: border-color 180ms ease, background-color 180ms ease, color 180ms ease;
}

.about-reference-page .about-action-primary {
  border-color: var(--about-gold);
  background: var(--about-gold);
  color: #171204;
}

.about-reference-page .about-action-primary:hover,
.about-reference-page .about-action-primary:focus-visible {
  border-color: #f0c94b;
  background: #f0c94b;
}

.about-reference-page .about-action-secondary {
  border-color: rgba(255, 255, 255, 0.28);
  color: #fff;
}

.about-reference-page .about-action-secondary:hover,
.about-reference-page .about-action-secondary:focus-visible {
  border-color: rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.06);
}

.about-reference-page .about-action:focus-visible,
.about-reference-page .jobs-more summary:focus-visible {
  outline: 3px solid rgba(49, 120, 221, 0.45);
  outline-offset: 3px;
}

.about-reference-page .about-hero-journey {
  position: relative;
  padding: 34px 0 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.about-reference-page .about-years {
  display: flex;
  align-items: flex-end;
  gap: 18px;
}

.about-reference-page .about-years strong {
  color: var(--about-gold);
  font-size: clamp(78px, 7vw, 106px);
  font-weight: 750;
  line-height: 0.8;
  letter-spacing: -0.07em;
}

.about-reference-page .about-years span {
  padding-bottom: 4px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 16px;
  font-weight: 650;
  letter-spacing: 0.08em;
}

.about-reference-page .about-journey-track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 40px;
}

.about-reference-page .about-journey-track::before {
  content: "";
  position: absolute;
  top: 5px;
  right: 8%;
  left: 8%;
  height: 1px;
  background: rgba(255, 255, 255, 0.25);
}

.about-reference-page .about-journey-track span {
  position: relative;
  padding-top: 20px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-align: center;
}

.about-reference-page .about-journey-track span::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: 11px;
  height: 11px;
  border: 2px solid var(--about-ink);
  border-radius: 50%;
  background: var(--about-gold);
  box-shadow: 0 0 0 1px rgba(227, 181, 46, 0.7);
  transform: translateX(-50%);
}

.about-reference-page .about-hero-journey > p {
  max-width: 500px;
  margin: 34px 0 0;
  color: rgba(235, 240, 249, 0.62);
  font-size: 14px;
  line-height: 1.8;
}

/* Company introduction: editorial statement plus evidence. */
.about-reference-page .about-who {
  position: relative;
  z-index: 1;
  padding: 112px 0 124px;
  background: var(--about-paper);
  color: var(--about-text);
}

.about-reference-page .about-who-inner {
  width: min(1440px, calc(100% - 96px));
  margin: 0 auto;
}

.about-reference-page .about-who-head {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(64px, 8vw, 132px);
  align-items: start;
  margin: 0 0 86px;
  text-align: left;
}

.about-reference-page .about-statement {
  position: relative;
  margin: 0;
  padding-top: 30px;
  color: var(--about-text);
  font-size: clamp(36px, 3.2vw, 50px);
  font-weight: 750;
  line-height: 1.28;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

.about-reference-page .about-statement::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 62px;
  height: 3px;
  background: var(--about-gold);
}

.about-reference-page .about-who-intro {
  color: var(--about-copy);
  font-size: 17px;
  line-height: 1.95;
  letter-spacing: 0.01em;
}

.about-reference-page .about-who-intro p { text-wrap: pretty; }
.about-reference-page .about-who-intro p + p { margin-top: 20px; }

.about-reference-page .about-capabilities {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 34px;
  align-items: start;
}

.about-reference-page .about-capability {
  min-width: 0;
  text-align: left;
}

.about-reference-page .about-capability-visual {
  overflow: hidden;
  width: 100%;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--about-line);
  border-radius: 6px;
  background: var(--about-soft);
}

.about-reference-page .about-capability-visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 500ms cubic-bezier(0.16, 1, 0.3, 1);
}

.about-reference-page .about-capability:hover .about-capability-visual img { transform: scale(1.018); }

.about-reference-page .about-capability-tag {
  display: block;
  margin-top: 24px;
  color: var(--about-gold-deep);
  font-size: 12px;
  font-weight: 720;
  letter-spacing: 0.14em;
}

.about-reference-page .about-capability h3 {
  margin: 8px 0 0;
  color: var(--about-text);
  font-size: 28px;
  font-weight: 740;
  line-height: 1.3;
  letter-spacing: -0.03em;
}

.about-reference-page .about-capability > p {
  max-width: none;
  margin: 16px 0 0;
  color: var(--about-copy);
  font-size: 15px;
  line-height: 1.85;
  text-align: left;
}

/* Shared section rhythm. */
.about-reference-page .about-section {
  width: min(1440px, calc(100% - 96px));
  max-width: none;
  margin: 0 auto;
  padding: 112px 0;
}

.about-reference-page .about-section .section-head-center {
  max-width: 800px;
  margin: 0 0 58px;
  text-align: left;
}

.about-reference-page .about-section .section-title {
  margin: 0;
  color: var(--about-text);
  font-size: clamp(38px, 3.4vw, 52px);
  font-weight: 750;
  line-height: 1.18;
  letter-spacing: -0.045em;
}

.about-reference-page .about-section .section-title::before {
  width: 58px;
  height: 3px;
  margin: 0 0 24px;
  background: var(--about-gold);
}

.about-reference-page .about-section .section-sub {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--about-copy);
  font-size: 16px;
  line-height: 1.8;
}

/* Team as one connected delivery system instead of four unrelated cards. */
.about-reference-page #team {
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}

.about-reference-page #team .team-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}

.about-reference-page #team .team-card,
.about-reference-page #team .team-card:hover {
  position: relative;
  min-height: 250px;
  padding: 34px 30px 32px;
  border: 0;
  border-right: 1px solid var(--about-line);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  transform: none;
}

.about-reference-page #team .team-card:last-child { border-right: 0; }

.about-reference-page #team .team-card::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 30px;
  width: 11px;
  height: 11px;
  border: 2px solid #fff;
  border-radius: 50%;
  background: var(--about-gold);
  box-shadow: 0 0 0 1px var(--about-gold);
  opacity: 1;
}

.about-reference-page #team .team-card-head {
  align-items: flex-start;
  margin-bottom: 22px;
}

.about-reference-page #team .team-card-icon {
  width: 42px;
  height: 42px;
  border: 1px solid rgba(168, 117, 0, 0.25);
  border-radius: 50%;
  background: #fff8e7;
  color: var(--about-gold-deep);
}

.about-reference-page #team .team-card-icon svg { stroke: currentColor; }

.about-reference-page #team .team-card-title {
  color: var(--about-text);
  font-size: 21px;
  font-weight: 720;
}

.about-reference-page #team .team-card-desc {
  color: var(--about-copy);
  font-size: 14px;
  line-height: 1.85;
}

/* Recruitment is secondary: three key roles, with the rest available on demand. */
.about-reference-page #join { padding-bottom: 124px; }

.about-reference-page #join .jobs-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin: 0;
}

.about-reference-page #join .job-card,
.about-reference-page #join .job-card:hover,
.about-reference-page #join .job-card:focus-within {
  min-height: 378px;
  padding: 30px 28px 26px;
  border: 1px solid var(--about-line) !important;
  border-radius: 6px !important;
  background: #fff;
  box-shadow: none !important;
  transform: none !important;
}

.about-reference-page #join .job-card:hover,
.about-reference-page #join .job-card:focus-within {
  border-color: rgba(168, 117, 0, 0.5) !important;
  background: #fffdf8;
}

.about-reference-page #join .job-icon {
  border-radius: 50%;
  background: var(--about-gold);
  color: #171204;
}

.about-reference-page #join .job-title {
  color: var(--about-text);
  font-size: 22px;
  line-height: 1.35;
}

.about-reference-page #join .job-meta {
  color: #737b89;
  font-size: 12px;
  line-height: 1.7;
}

.about-reference-page #join .job-desc {
  display: block;
  overflow: visible;
  max-height: none;
  color: var(--about-copy);
  font-size: 14px;
  line-height: 1.8;
  -webkit-line-clamp: unset;
  line-clamp: unset;
}

.about-reference-page #join .job-requirements {
  display: block;
  overflow: visible;
  max-height: none;
  -webkit-line-clamp: unset;
  line-clamp: unset;
}

.about-reference-page #join .job-requirements li {
  color: var(--about-copy);
  font-size: 12px;
  line-height: 1.7;
}

.about-reference-page #join .job-requirements li::before { background: var(--about-gold); }

.about-reference-page #join .job-apply {
  align-self: flex-start;
  width: auto;
  min-width: 132px;
  height: 46px;
  padding: 0 20px;
  border: 1px solid rgba(168, 117, 0, 0.45);
  border-radius: 4px !important;
  background: transparent;
  color: #6d4a00;
  font-family: inherit;
  font-size: 14px;
  font-weight: 650;
  box-shadow: none !important;
  transform: none !important;
}

.about-reference-page #join .job-apply:hover,
.about-reference-page #join .job-apply:focus-visible {
  border-color: var(--about-gold);
  background: var(--about-gold);
  color: #171204;
}

.about-reference-page .jobs-more { margin-top: 34px; }

.about-reference-page .jobs-more summary {
  display: flex;
  width: fit-content;
  min-width: 218px;
  height: 48px;
  margin: 0 auto;
  padding: 0 20px;
  align-items: center;
  justify-content: center;
  gap: 14px;
  border: 1px solid rgba(168, 117, 0, 0.45);
  border-radius: 4px;
  color: #6d4a00;
  font-size: 14px;
  font-weight: 650;
  cursor: pointer;
  list-style: none;
}

.about-reference-page .jobs-more summary::-webkit-details-marker { display: none; }

.about-reference-page .jobs-more summary:hover {
  border-color: var(--about-gold);
  background: #fff8e7;
}

.about-reference-page .jobs-more summary span {
  font-size: 21px;
  font-weight: 400;
  line-height: 1;
  transition: transform 180ms ease;
}

.about-reference-page .jobs-more[open] summary span { transform: rotate(45deg); }
.about-reference-page #join .jobs-grid-more { margin-top: 34px; }

/* Closing conversion point. */
.about-reference-page .about-contact {
  position: relative;
  overflow: hidden;
  background: var(--about-ink);
  color: #fff;
}

.about-reference-page .about-contact::after {
  content: "";
  position: absolute;
  top: -180px;
  right: -100px;
  width: 420px;
  height: 420px;
  border: 1px solid rgba(227, 181, 46, 0.15);
  border-radius: 50%;
}

.about-reference-page .about-contact-inner {
  position: relative;
  z-index: 1;
  display: flex;
  width: min(1440px, calc(100% - 96px));
  min-height: 290px;
  margin: 0 auto;
  padding: 76px 0;
  align-items: center;
  justify-content: space-between;
  gap: 56px;
}

.about-reference-page .about-contact h2 {
  margin: 0;
  color: #fff;
  font-size: clamp(36px, 3.2vw, 50px);
  font-weight: 740;
  line-height: 1.2;
  letter-spacing: -0.045em;
}

.about-reference-page .about-contact p {
  max-width: 750px;
  margin: 18px 0 0;
  color: rgba(235, 240, 249, 0.68);
  font-size: 16px;
  line-height: 1.8;
}

@media (prefers-reduced-motion: no-preference) {
  .about-reference-page .about-hero-copy,
  .about-reference-page .about-hero-journey {
    animation: about-rise 620ms cubic-bezier(0.16, 1, 0.3, 1) both;
  }
  .about-reference-page .about-hero-journey { animation-delay: 90ms; }
}

@keyframes about-rise {
  from { opacity: 0.92; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 1080px) {
  .about-reference-page .about-hero-inner {
    grid-template-columns: minmax(0, 1fr) minmax(360px, 0.8fr);
    gap: 48px;
    width: min(100% - 56px, 960px);
  }

  .about-reference-page .about-who-inner,
  .about-reference-page .about-section,
  .about-reference-page .about-contact-inner { width: min(100% - 56px, 960px); }

  .about-reference-page .about-who-head { gap: 54px; }
  .about-reference-page .about-capabilities { gap: 24px; }

  .about-reference-page #team .team-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .about-reference-page #team .team-card:nth-child(2) { border-right: 0; }
  .about-reference-page #team .team-card:nth-child(-n + 2) { border-bottom: 1px solid var(--about-line); }
  .about-reference-page #join .jobs-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 820px) {
  .about-reference-page .about-hero {
    min-height: 0;
    padding: 120px 0 76px;
  }

  .about-reference-page .about-hero-inner {
    grid-template-columns: 1fr;
    gap: 70px;
  }

  .about-reference-page .about-hero-journey { max-width: 560px; }
  .about-reference-page .about-who { padding: 84px 0 94px; }

  .about-reference-page .about-who-head {
    grid-template-columns: 1fr;
    gap: 38px;
    margin-bottom: 66px;
  }

  .about-reference-page .about-statement { max-width: 680px; }

  .about-reference-page .about-capabilities {
    grid-template-columns: 1fr;
    gap: 58px;
  }

  .about-reference-page .about-capability {
    display: grid;
    grid-template-columns: minmax(280px, 0.9fr) minmax(0, 1.1fr);
    grid-template-rows: auto auto 1fr;
    column-gap: 30px;
  }

  .about-reference-page .about-capability-visual { grid-row: 1 / span 3; }
  .about-reference-page .about-capability-tag { margin-top: 6px; }
  .about-reference-page .about-section { padding: 84px 0; }

  .about-reference-page .about-contact-inner {
    min-height: 0;
    padding: 70px 0;
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 620px) {
  .about-reference-page .about-hero { padding: 96px 0 62px; }

  .about-reference-page .about-hero::before {
    top: 320px;
    right: -260px;
    width: 520px;
    height: 520px;
  }

  .about-reference-page .about-hero-inner,
  .about-reference-page .about-who-inner,
  .about-reference-page .about-section,
  .about-reference-page .about-contact-inner { width: calc(100% - 32px); }

  .about-reference-page .about-title { font-size: 46px; }

  .about-reference-page .about-subtitle {
    margin-top: 14px;
    font-size: 13px;
  }

  .about-reference-page .about-hero-lead {
    margin-top: 24px;
    font-size: 16px;
    line-height: 1.8;
  }

  .about-reference-page .about-hero-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 30px;
  }

  .about-reference-page .about-action {
    min-width: 0;
    height: 48px;
    padding: 0 14px;
    font-size: 14px;
  }

  .about-reference-page .about-hero-journey { padding: 28px 0 24px; }
  .about-reference-page .about-years strong { font-size: 72px; }
  .about-reference-page .about-years span { font-size: 14px; }
  .about-reference-page .about-journey-track { margin-top: 34px; }

  .about-reference-page .about-journey-track span {
    font-size: 11px;
    letter-spacing: 0.04em;
  }

  .about-reference-page .about-who { padding: 70px 0 78px; }

  .about-reference-page .about-statement {
    padding-top: 24px;
    font-size: 32px;
    line-height: 1.34;
  }

  .about-reference-page .about-who-intro {
    font-size: 15px;
    line-height: 1.85;
  }

  .about-reference-page .about-capabilities { gap: 52px; }
  .about-reference-page .about-capability { display: block; }
  .about-reference-page .about-capability-tag { margin-top: 20px; }
  .about-reference-page .about-capability h3 { font-size: 25px; }
  .about-reference-page .about-section { padding: 72px 0; }
  .about-reference-page .about-section .section-head-center { margin-bottom: 42px; }
  .about-reference-page .about-section .section-title { font-size: 34px; }
  .about-reference-page .about-section .section-sub { font-size: 15px; }
  .about-reference-page #team .team-grid { grid-template-columns: 1fr; }

  .about-reference-page #team .team-card,
  .about-reference-page #team .team-card:hover {
    min-height: 0;
    padding: 28px 22px;
    border-right: 0;
    border-bottom: 1px solid var(--about-line);
  }

  .about-reference-page #team .team-card:last-child { border-bottom: 0; }
  .about-reference-page #team .team-card::before { left: 22px; }
  .about-reference-page #join .jobs-grid { grid-template-columns: 1fr; }

  .about-reference-page #join .job-card,
  .about-reference-page #join .job-card:hover,
  .about-reference-page #join .job-card:focus-within {
    min-height: 0;
    padding: 24px 20px 22px;
  }

  .about-reference-page .jobs-more summary { width: 100%; }

  .about-reference-page .about-contact-inner {
    padding: 60px 0;
    gap: 32px;
  }

  .about-reference-page .about-contact h2 { font-size: 34px; }
}