/* ==========================================================================
   Landing Page — 對外功能說明頁
   延續全站設計代幣（tokens.css）與 G01 品牌語彙，非另立新視覺系統。
   ========================================================================== */

.landing { background: var(--c-page); }

.landing a { text-decoration: none; }

/* ---------- 頂列 ---------- */
.lnav {
  max-width: 1160px;
  margin: 0 auto;
  padding: 26px 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.lnav__brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-size: 17px;
  font-weight: 700;
  color: var(--c-ink);
}

.lnav__links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--c-muted);
}

.lnav__links a:hover { color: var(--c-teal-700); }

.lnav__cta {
  display: inline-flex;
  align-items: center;
  height: 42px;
  padding: 0 20px;
  border-radius: var(--r-pill);
  background: var(--c-teal-800);
  color: #fff;
  font-size: 14.5px;
  font-weight: 700;
  transition: background .16s ease;
}

.lnav__cta:hover { background: #004E58; }

/* ---------- Hero ---------- */
.lhero {
  max-width: 1160px;
  margin: 0 auto;
  padding: 84px 24px 56px;
}

.lhero__inner { max-width: 760px; }

.lhero__eyebrow {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .07em;
  color: var(--c-teal-600);
  text-transform: uppercase;
}

.lhero__title {
  margin: 16px 0 0;
  font-size: 52px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--c-ink);
}

.lhero__desc {
  margin: 22px 0 0;
  font-size: 18px;
  line-height: 1.75;
  color: var(--c-muted);
  max-width: 64ch;
}

.lhero__actions {
  margin-top: 36px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.lhero__btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  height: 54px;
  padding: 0 28px;
  border-radius: var(--r-pill);
  font-size: 16px;
  font-weight: 700;
}

.lhero__btn--primary {
  background: var(--c-teal-800);
  color: #fff;
  transition: background .16s ease;
}

.lhero__btn--primary:hover { background: #004E58; }

.lhero__btn--ghost {
  color: var(--c-teal-800);
  border: 1.5px solid var(--c-border);
  transition: border-color .16s ease, background .16s ease;
}

.lhero__btn--ghost:hover { border-color: var(--c-teal-400); background: var(--c-teal-050); }

/* ---------- 統計列 ---------- */
.lstats {
  margin: 56px 0 0;
  padding-top: 40px;
  border-top: 1px solid var(--c-border);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.lstats__item { margin: 0; }

.lstats__num {
  font-size: 36px;
  font-weight: 800;
  color: var(--c-teal-700);
  letter-spacing: -.01em;
  font-variant-numeric: tabular-nums;
}

.lstats__label {
  margin: 4px 0 0;
  font-size: 13.5px;
  color: var(--c-muted);
  line-height: 1.5;
}

/* ---------- 信任三要素 ---------- */
.ltrust {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px 64px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.ltrust__item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 22px 24px;
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  background: var(--c-surface);
}

.ltrust__icon {
  flex: none;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--c-teal-050);
}

.ltrust__title { font-size: 16px; font-weight: 700; color: var(--c-ink); }
.ltrust__desc { margin-top: 2px; font-size: 13.5px; color: var(--c-muted); }

/* ---------- 解決什麼問題 ---------- */
.lproblems {
  max-width: 1160px;
  margin: 0 auto;
  padding: 20px 24px 68px;
}

.lproblems__grid {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.lproblems__card {
  padding: 22px 24px;
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  background: var(--c-surface);
}

.lproblems__q, .lproblems__a {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--c-ink);
}

.lproblems__a { margin-top: 12px; }

.lproblems__tag {
  flex: none;
  margin-top: 1px;
  font-size: 12px;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: var(--r-pill);
  white-space: nowrap;
}

.lproblems__tag--pain { color: #A8660A; background: var(--c-amber-bg); }
.lproblems__tag--fix { color: var(--c-teal-700); background: var(--c-teal-050); }

/* ---------- 應用情境 ---------- */
.lscenarios {
  max-width: 1160px;
  margin: 0 auto;
  padding: 20px 24px 68px;
}

.lscenarios__list {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.lscenarios__card {
  padding: 26px 26px 24px;
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-teal-500);
  border-radius: var(--r-lg);
  background: var(--c-surface);
}

.lscenarios__tag {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .03em;
  color: var(--c-teal-700);
  text-transform: uppercase;
}

.lscenarios__text {
  margin-top: 10px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--c-muted);
}

/* ---------- 核心能力 ---------- */
.lcaps {
  max-width: 1160px;
  margin: 0 auto;
  padding: 20px 24px 68px;
}

.lcaps__grid {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.lcaps__card {
  padding: 20px 20px 22px;
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-teal-500);
  border-radius: var(--r-md);
  background: var(--c-surface);
}

.lcaps__name { font-size: 15.5px; font-weight: 700; color: var(--c-ink); }

.lcaps__desc {
  margin-top: 7px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-muted);
}

/* ---------- 應用網格 ---------- */
.lapps {
  max-width: 1160px;
  margin: 0 auto;
  padding: 20px 24px 68px;
}

.lapps__head { max-width: 640px; }

.lapps__head h2 {
  font-size: 30px;
  font-weight: 800;
  color: var(--c-ink);
  letter-spacing: -.005em;
}

.lapps__sub {
  margin-top: 10px;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--c-muted);
}

.lapps__grid {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.lapps__card {
  padding: 24px 22px;
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  background: var(--c-surface);
}

.lapps__icon {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  background: var(--c-teal-050);
}

.lapps__code {
  margin-top: 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--c-teal-600);
}

.lapps__name {
  margin-top: 3px;
  font-size: 17px;
  font-weight: 700;
  color: var(--c-ink);
}

.lapps__desc {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--c-muted);
}

/* ---------- 安全與合規 ---------- */
.lsecurity {
  max-width: 1160px;
  margin: 0 auto;
  padding: 20px 24px 68px;
}

.lsecurity__grid {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.lsecurity__card {
  padding: 24px 22px;
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  background: var(--c-surface);
}

.lsecurity__icon {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  background: var(--c-teal-050);
}

.lsecurity__title {
  margin-top: 14px;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-ink);
}

.lsecurity__desc {
  margin-top: 7px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--c-muted);
}

/* ---------- 流程 ---------- */
.lflow {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px 76px;
}

.lflow h2 {
  font-size: 26px;
  font-weight: 800;
  color: var(--c-ink);
  max-width: 640px;
  letter-spacing: -.005em;
}

.lflow__list {
  margin-top: 30px;
  padding: 26px 30px;
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  background: var(--c-surface);
  display: flex;
  align-items: center;
  list-style: none;
}

.lflow__item {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--c-muted);
}

.lflow__item::after {
  content: "";
  position: absolute;
  left: 0;
  right: -100%;
  top: 50%;
  height: 1.5px;
  background: var(--c-border);
  z-index: 0;
}

.lflow__item--end::after { display: none; }

.lflow__dot {
  position: relative;
  z-index: 1;
  flex: none;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: 2px solid var(--c-teal-500);
  background: var(--c-page);
}

/* ---------- 頁尾 ---------- */
.lfoot {
  max-width: 1160px;
  margin: 0 auto;
  padding: 56px 24px 30px;
  border-top: 1px solid var(--c-border);
}

.lfoot__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 36px;
}

.lfoot__h {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--c-ink);
  text-transform: uppercase;
}

.lfoot__text {
  margin-top: 12px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--c-muted);
  max-width: 46ch;
}

.lfoot__list { margin-top: 12px; display: flex; flex-direction: column; gap: 9px; }

.lfoot__list li { font-size: 13.5px; color: var(--c-muted); }

.lfoot__row {
  padding-top: 24px;
  border-top: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 13.5px;
  color: var(--c-muted);
}

.lfoot__item { display: inline-flex; align-items: center; gap: 8px; }

.lfoot__version { margin-left: auto; letter-spacing: .04em; }

.lfoot__note {
  margin-top: 14px;
  font-size: 13px;
  color: var(--c-muted-2);
}

.lfoot__note a { color: var(--c-teal-700); }
.lfoot__note a:hover { text-decoration: underline; }

/* ---------- 響應式 ---------- */
@media (max-width: 900px) {
  .lhero__title { font-size: 38px; }
  .lstats { grid-template-columns: repeat(2, 1fr); gap: 24px 20px; }
  .ltrust { grid-template-columns: 1fr; }
  .lproblems__grid { grid-template-columns: 1fr; }
  .lcaps__grid { grid-template-columns: repeat(2, 1fr); }
  .lapps__grid { grid-template-columns: repeat(2, 1fr); }
  .lsecurity__grid { grid-template-columns: repeat(2, 1fr); }
  .lscenarios__list { grid-template-columns: 1fr; }
  .lflow__list { flex-wrap: wrap; gap: 16px 0; }
  .lflow__item { flex: 1 1 33%; }
  .lflow__item::after { display: none; }
  .lfoot__grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .lfoot__col:first-child { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .lnav { padding: 20px 16px 0; flex-wrap: wrap; gap: 12px; }
  .lnav__links { order: 3; width: 100%; gap: 20px; }
  .lhero { padding: 40px 16px 40px; }
  .lhero__title { font-size: 30px; }
  .lhero__desc { font-size: 16px; }
  .lhero__actions { flex-direction: column; align-items: stretch; }
  .lhero__btn { justify-content: center; }
  .lstats { grid-template-columns: 1fr 1fr; margin-top: 40px; padding-top: 28px; }
  .lstats__num { font-size: 28px; }
  .ltrust { padding: 0 16px 48px; }
  .lproblems { padding: 12px 16px 48px; }
  .lproblems__grid { margin-top: 24px; }
  .lcaps { padding: 12px 16px 48px; }
  .lcaps__grid { grid-template-columns: 1fr; margin-top: 24px; }
  .lapps { padding: 12px 16px 48px; }
  .lapps__head h2 { font-size: 24px; }
  .lapps__grid { grid-template-columns: 1fr; margin-top: 24px; }
  .lscenarios { padding: 12px 16px 48px; }
  .lscenarios__list { grid-template-columns: 1fr; margin-top: 24px; }
  .lsecurity { padding: 12px 16px 48px; }
  .lsecurity__grid { grid-template-columns: 1fr; margin-top: 24px; }
  .lflow { padding: 0 16px 56px; }
  .lflow__item { flex: 1 1 50%; }
  .lfoot { padding: 40px 16px 30px; }
  .lfoot__grid { grid-template-columns: 1fr; gap: 28px; padding-bottom: 28px; }
  .lfoot__col:first-child { grid-column: auto; }
  .lfoot__row { flex-wrap: wrap; gap: 10px 18px; }
  .lfoot__version { margin-left: 0; width: 100%; }
}