/* ======================================================
   安全與信任 — 首頁三欄卡 + 精簡區塊 + 全螢幕完整說明頁
   ====================================================== */

/* ---------- 首頁區塊 ---------- */
.lx-sec { background: var(--lx-canvas); }

.lx-sec-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 12px;
}
.lx-sec-card {
  background: var(--lx-surface);
  border: 1px solid var(--lx-border-strong);
  border-top: 3px solid var(--lx-gold);
  padding: 32px 28px 26px;
  display: flex; flex-direction: column;
}
.lx-sec-card-n {
  font-family: var(--lx-font-mono);
  font-size: 11px; font-weight: 700; letter-spacing: 3px;
  color: var(--lx-gold);
  margin-bottom: 14px;
}
.lx-sec .lx-sec-card h3 {
  font-size: 1.15rem; font-weight: 500; letter-spacing: 3px;
  color: var(--lx-ink-1);
  margin: 0 0 16px;
}
.lx-sec-card p {
  font-size: 14px; line-height: 1.95; letter-spacing: 1px;
  color: var(--lx-ink-3);
  margin: 0 0 20px;
}
.lx-sec-card ul {
  list-style: none; margin: auto 0 0; padding: 18px 0 0;
  border-top: 1px solid var(--lx-border);
}
.lx-sec-card li {
  position: relative; padding-left: 16px; margin-bottom: 8px;
  font-size: 13px; line-height: 1.8; letter-spacing: 1px; color: var(--lx-ink-2);
}
.lx-sec-card li::before {
  content: ''; position: absolute; left: 0; top: 11px;
  width: 6px; height: 1px; background: var(--lx-gold);
}

/* 精簡區塊 */
.lx-sec-brief {
  margin-top: 24px;
  background: var(--lx-ink-1);
  color: #fff;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
}
.lx-sec-brief-body { padding: 42px 44px; }
.lx-sec .lx-sec-brief-body h3 {
  font-size: 1.35rem; font-weight: 500; letter-spacing: 4px;
  color: #fff; margin: 0 0 18px;
}
.lx-sec-brief-body p {
  font-size: 14.5px; line-height: 2.05; letter-spacing: 1px;
  color: rgba(255,255,255,0.72);
  margin: 0 0 28px;
}
.lx-sec-brief .lx-trial-btn { border-color: rgba(255,255,255,0.35); color: #fff; }
.lx-sec-brief .lx-trial-btn:hover { border-color: var(--lx-gold); color: var(--lx-gold); }

.lx-sec-mechs {
  padding: 42px 44px;
  border-left: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.03);
}
.lx-sec-mechs-label {
  display: block;
  font-size: 12px; letter-spacing: 3px; color: var(--lx-gold-soft); font-weight: 500;
  margin-bottom: 18px;
}
.lx-sec-mechs ul {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 18px;
}
.lx-sec-mechs li {
  position: relative; padding-left: 18px;
  font-size: 12.5px; line-height: 1.7; letter-spacing: 1px; color: rgba(255,255,255,0.85);
}
.lx-sec-mechs li::before {
  content: '✓'; position: absolute; left: 0; top: 0;
  color: var(--lx-gold); font-size: 12px;
}

/* ---------- 全螢幕頁（沿用 .lx-cmp 的容器樣式） ---------- */
.lx-secpage-body {
  max-width: var(--lx-container-max); margin: 0 auto;
  padding: 0 var(--lx-gutter);
}

/* 共通機制 ／ 智慧 BIM 圖台 ／ IPCS 智慧工地 三段的分隔標題 */
.lx-cmp .lx-secpage-group {
  margin: 44px 0 0;
  padding: 14px 20px;
  background: var(--lx-ink-1);
  color: var(--lx-gold-soft);
  font-size: 1rem; letter-spacing: 4px; font-weight: 500;
}
.lx-cmp .lx-secpage-group:first-child { margin-top: 0; }

.lx-secpage-sec {
  display: grid; grid-template-columns: 72px 1fr; gap: 26px;
  padding: 34px 0;
  border-top: 1px solid var(--lx-border);
}
.lx-secpage-group + .lx-secpage-sec { border-top: 0; }
.lx-secpage-n {
  font-family: var(--lx-font-mono);
  font-size: 13px; font-weight: 700; letter-spacing: 2px;
  color: #fff; background: var(--lx-gold);
  align-self: start;
  padding: 7px 0; text-align: center;
}
.lx-cmp .lx-secpage-sec h2 {
  font-size: 1.2rem; font-weight: 500; letter-spacing: 3px;
  color: var(--lx-ink-1);
  margin: 0 0 16px;
}
.lx-secpage-sec-body p {
  font-size: 14.5px; line-height: 2.05; letter-spacing: 1.1px;
  color: var(--lx-ink-3);
  margin: 0 0 12px;
}
.lx-secpage-foot {
  border-left: 2px solid var(--lx-gold);
  padding-left: 14px;
  color: var(--lx-ink-2) !important;
  margin-top: 18px !important;
}

.lx-secpage-list {
  background: var(--lx-surface-alt);
  border: 1px solid var(--lx-border);
  padding: 20px 22px;
  margin: 18px 0 6px;
}
.lx-secpage-list-label {
  display: block;
  font-size: 12px; letter-spacing: 2.5px; color: var(--lx-ink-2); font-weight: 500;
  margin-bottom: 12px;
}
.lx-secpage-list ul {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 8px 22px;
}
.lx-secpage-list li {
  position: relative; padding-left: 16px;
  font-size: 13.5px; line-height: 1.85; letter-spacing: 1px; color: var(--lx-ink-3);
}
.lx-secpage-list li::before {
  content: ''; position: absolute; left: 0; top: 12px;
  width: 6px; height: 1px; background: var(--lx-gold);
}

.lx-secpage-roles { margin: 18px 0 0; }
.lx-secpage-roles > div {
  display: grid; grid-template-columns: 160px 1fr; gap: 16px;
  padding: 11px 0;
  border-top: 1px solid var(--lx-border);
}
.lx-secpage-roles > div:first-child { border-top: 0; }
.lx-secpage-roles dt {
  font-size: 13.5px; letter-spacing: 1.5px; font-weight: 500; color: var(--lx-ink-2);
}
.lx-secpage-roles dd {
  margin: 0; font-size: 13.5px; line-height: 1.85; letter-spacing: 1px; color: var(--lx-ink-3);
}

.lx-secpage-quote {
  background: var(--lx-ink-1);
  padding: 38px 42px;
  margin: 40px 0 0;
}
.lx-secpage-quote b {
  display: block;
  font-size: 1.2rem; font-weight: 500; letter-spacing: 4px;
  color: var(--lx-gold-soft);
  margin-bottom: 16px;
}
.lx-secpage-quote p {
  margin: 0;
  font-size: 14.5px; line-height: 2.05; letter-spacing: 1.1px;
  color: rgba(255,255,255,0.72);
}

/* FAQ 手風琴 */
.lx-secpage .lx-cmp-h2 { padding: 0; margin-top: 66px; }
.lx-secpage-faq {
  border-top: 1px solid var(--lx-border-strong);
}
.lx-faq-item { border-bottom: 1px solid var(--lx-border-strong); }
.lx-faq-q {
  width: 100%;
  display: grid; grid-template-columns: 54px 1fr 28px; align-items: baseline; gap: 12px;
  background: transparent; border: 0; cursor: pointer;
  padding: 20px 4px;
  text-align: left;
}
.lx-faq-q em {
  font-style: normal; font-family: var(--lx-font-mono);
  font-size: 12px; font-weight: 700; letter-spacing: 1.5px; color: var(--lx-gold);
}
.lx-faq-q span {
  font-size: 15px; line-height: 1.7; letter-spacing: 1.5px; color: var(--lx-ink-2); font-weight: 500;
}
.lx-faq-q i {
  font-style: normal; font-size: 19px; color: var(--lx-ink-4); text-align: right;
  transition: color var(--lx-dur-base);
}
.lx-faq-q:hover span, .lx-faq-item.is-open .lx-faq-q span { color: var(--lx-gold); }
.lx-faq-q:hover i, .lx-faq-item.is-open .lx-faq-q i { color: var(--lx-gold); }

.lx-faq-a {
  display: grid; grid-template-rows: 0fr;
  transition: grid-template-rows 380ms var(--lx-ease-standard);
}
.lx-faq-item.is-open .lx-faq-a { grid-template-rows: 1fr; }
.lx-faq-a > p {
  overflow: hidden;
  margin: 0;
  padding: 0 28px 0 66px;
  font-size: 14px; line-height: 2; letter-spacing: 1.1px; color: var(--lx-ink-3);
}
.lx-faq-item.is-open .lx-faq-a > p { padding-bottom: 22px; }

/* ---------- RWD ---------- */
@media (max-width: 1100px) {
  .lx-sec-cards { grid-template-columns: 1fr; }
  .lx-sec-brief { grid-template-columns: 1fr; }
  .lx-sec-mechs { border-left: 0; border-top: 1px solid rgba(255,255,255,0.14); }
}
@media (max-width: 820px) {
  .lx-sec-brief-body, .lx-sec-mechs { padding: 32px 26px; }
  .lx-sec-mechs ul { grid-template-columns: 1fr; }
  .lx-secpage-sec { grid-template-columns: 1fr; gap: 16px; }
  .lx-secpage-n { justify-self: start; padding: 6px 14px; }
  .lx-secpage-roles > div { grid-template-columns: 1fr; gap: 4px; }
  .lx-secpage-quote { padding: 30px 26px; }
  .lx-faq-q { grid-template-columns: 42px 1fr 24px; gap: 8px; }
  .lx-faq-a > p { padding-left: 50px; padding-right: 8px; }
}