/* page-specific styles */

/* ───────────── ABOUT PAGE ───────────── */
.about-story { padding: 100px var(--pad-x) 60px; }
.about-story-grid {
  display: grid; grid-template-columns: 1fr 1.4fr; gap: 80px;
}
.about-quote-block {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; padding: 28px; margin-bottom: 28px;
  border-left: 4px solid var(--accent);
}
.about-quote-en {
  font-family: var(--mono); font-size: 14px;
  color: var(--accent-dark); letter-spacing: .02em; font-weight: 500;
  margin-bottom: 8px;
}
.about-quote-zh {
  font-weight: 600; color: var(--ink);
  letter-spacing: -.01em; line-height: 1.4;
}
.about-p {
  line-height: 1.8; color: var(--ink); opacity: .9;
  margin-bottom: 22px;
}
.about-p:last-child { margin-bottom: 0; }
.about-p b { color: var(--accent-dark); font-weight: 600; }

.about-pillars-section {
  padding: 100px var(--pad-x);
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.pillars-grid {
  margin-top: 56px;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
}
.pillar-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; padding: 36px;
  display: flex; flex-direction: column;
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
.pillar-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 16px 36px -20px rgba(10,10,10,.12);
}
.pillar-card-n {
  font-family: var(--mono); font-size: 16px; font-weight: 600;
  color: var(--accent); letter-spacing: .16em; margin-bottom: 28px;
}
.pillar-card-t {
  font-weight: 600; letter-spacing: -.015em;
  margin-bottom: 16px; color: var(--ink);
}
.pillar-card-d {
  line-height: 1.7; color: var(--muted);
  margin-bottom: 24px;
}
.pillar-card-d b { color: var(--ink); }
.pillar-card-stat {
  display: flex; align-items: baseline; gap: 10px;
  margin-top: auto;
  padding-top: 20px; border-top: 1px solid var(--border);
}
.ps-v {
  font-size: 42px; font-weight: 700; color: var(--accent-dark);
  letter-spacing: -.02em; line-height: 1;
}
.ps-k {
  font-family: var(--mono); font-size: 14px;
  color: var(--muted); letter-spacing: .04em;
}

/* SDLC flow */
.about-sdlc { padding: 100px var(--pad-x); }
.sdlc-grid {
  margin-top: 48px;
  display: grid; grid-template-columns: repeat(5, 1fr);
  background: var(--surface);
  border: 1px solid var(--border); border-radius: 16px; overflow: hidden;
}
.sdlc-step {
  padding: 32px 24px;
  position: relative;
  border-right: 1px solid var(--border);
}
.sdlc-step:last-child { border-right: 0; }
.sdlc-step-n {
  font-family: var(--mono); font-size: 12px; font-weight: 600;
  color: var(--accent); letter-spacing: .14em; margin-bottom: 16px;
}
.sdlc-step-t {
  font-weight: 600; margin-bottom: 12px;
  color: var(--ink); letter-spacing: -.01em;
}
.sdlc-step-d {
  line-height: 1.6; color: var(--muted);
}
.sdlc-step:not(:last-child)::after {
  content: ""; position: absolute; right: -8px; top: 50%;
  width: 14px; height: 14px; background: var(--surface);
  border-right: 1px solid var(--border); border-top: 1px solid var(--border);
  transform: translateY(-50%) rotate(45deg); z-index: 1;
}

/* About cross-industry */
.about-industries {
  padding: 100px var(--pad-x);
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}
.industry-grid {
  margin-top: 56px;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
}
.industry-tag {
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  display: flex; flex-direction: column; gap: 14px;
}
.industry-head {
  display: flex; align-items: center; gap: 16px;
}
.industry-icon {
  width: 56px; height: 56px; border-radius: 14px;
  background: var(--accent-soft); color: var(--accent-dark);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.industry-icon svg { width: 30px; height: 30px; display: block; }
.industry-tag-t {
  font-weight: 600; color: var(--ink);
  letter-spacing: -.01em; line-height: 1.3;
}
.industry-tag-d {
  color: var(--muted); line-height: 1.6;
}

.about-title .ln { display: block; }

/* ───────────── RESPONSIVE ───────────── */
@media (max-width: 1024px) {
  .about-story-grid { grid-template-columns: 1fr; gap: 36px; }
  .pillars-grid { grid-template-columns: 1fr; }
  .industry-grid { grid-template-columns: repeat(2, 1fr); }
  .sdlc-grid { grid-template-columns: 1fr 1fr; }
  .sdlc-step { border-right: 0; border-bottom: 1px solid var(--border); }
  .sdlc-step:not(:last-child)::after { display: none; }
}

@media (max-width: 720px) {
  .about-quote-block { padding: 22px 20px; }
  .about-quote-zh { line-height: 1.6; }
  .about-story, .about-pillars-section, .about-sdlc, .about-industries { padding: 56px var(--pad-x); }
  .sdlc-grid { grid-template-columns: 1fr; }
  .pillar-card { padding: 24px; }

  /* 16px minimum */
  .about-quote-en, .pillar-card-n, .sdlc-step-n, .sdlc-step-t { font-size: 16px; }
}

@media (max-width: 375px) {
  .about-quote-zh { line-height: 1.65; }
  .about-story, .about-pillars-section, .about-sdlc, .about-industries { padding: 44px var(--pad-x); }
}