/* ==========================================================================
   蓝冠娱乐 · MILE MARK「里程桩」design system
   board.css — components: hero road, km-stone heads, cards, route stops,
   spec sheets, guide signs, stats, FAQ, article, forms, CTA
   ========================================================================== */

/* ---------- hero --------------------------------------------------------- */

.lg-hero {
  position: relative;
  overflow: hidden;
  padding: 108px 0 84px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(1100px 520px at 78% -12%, rgba(245, 195, 59, 0.12), transparent 62%),
    linear-gradient(180deg, #101317 0%, #0d0f12 78%);
}

.lg-hero__in {
  position: relative;
  z-index: 3;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 28px;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  gap: 48px;
  align-items: end;
}

.lg-hero h1 { margin: 18px 0 22px; }

.lg-hero h1 span {
  display: block;
  color: var(--mark);
  font-size: 0.88em;
}

/* darken the road behind the copy so the beam never fights the text */
.lg-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(100deg, rgba(13, 15, 18, 0.94) 0%, rgba(13, 15, 18, 0.72) 38%, rgba(13, 15, 18, 0.18) 66%, transparent 82%);
}

.lg-hero .lg-lede { margin-bottom: 30px; }

.lg-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.lg-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px dashed var(--line-2);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--dim);
}

.lg-hero__meta b { color: var(--chalk); font-weight: 700; }

/* dash-cam overlay */
.lg-rec {
  position: absolute;
  z-index: 4;
  top: 26px;
  right: 28px;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 6px 12px;
  border: 1px solid rgba(226, 102, 60, 0.5);
  background: rgba(13, 15, 18, 0.7);
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  color: #f0b199;
}

.lg-rec::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--warn);
  animation: lg-blink 1.6s steps(1, end) infinite;
}

@keyframes lg-blink {
  0%, 55% { opacity: 1; }
  56%, 100% { opacity: 0.15; }
}

/* perspective road drawn with clip-paths only.
   Kept deliberately quiet: faded towards the horizon, masked at the sides,
   so it reads as scenery and never competes with the hero copy. */
.lg-road {
  position: absolute;
  inset: auto 0 0 0;
  height: 66%;
  z-index: 1;
  pointer-events: none;
  opacity: 0.6;
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 26%, #000 100%);
  mask-image: linear-gradient(180deg, transparent 0%, #000 26%, #000 100%);
}

.lg-road__surface {
  position: absolute;
  inset: 0;
  clip-path: polygon(46% 0, 54% 0, 100% 100%, 0 100%);
  background:
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.014) 0 45px, transparent 45px 90px),
    linear-gradient(180deg, rgba(15, 18, 22, 0) 0%, rgba(10, 12, 15, 0.9) 100%);
}

.lg-road__centre {
  position: absolute;
  left: 50%;
  bottom: 0;
  height: 100%;
  width: 24%;
  transform: translateX(-50%);
  clip-path: polygon(48.9% 0, 51.1% 0, 100% 100%, 0 100%);
  background-image: repeating-linear-gradient(180deg, rgba(245, 195, 59, 0.5) 0 11px, transparent 11px 38px);
  opacity: 0.85;
}

.lg-road__edge {
  position: absolute;
  bottom: 0;
  height: 100%;
  width: 13%;
  background: rgba(242, 239, 230, 0.12);
}

.lg-road__edge--l {
  left: 0;
  clip-path: polygon(87% 0, 88.6% 0, 100% 100%, 0 100%);
}

.lg-road__edge--r {
  right: 0;
  clip-path: polygon(11.4% 0, 13% 0, 100% 100%, 0 100%);
}

.lg-road__glow {
  position: absolute;
  left: 50%;
  bottom: -18%;
  width: 66%;
  height: 54%;
  transform: translateX(-50%);
  background: radial-gradient(ellipse at center, rgba(245, 195, 59, 0.1), transparent 68%);
}

/* telemetry HUD panel */
.lg-hud {
  position: relative;
  border: 1px solid var(--line-2);
  background: rgba(17, 20, 25, 0.86);
  padding: 22px;
  align-self: end;
}

.lg-hud::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  height: 3px;
  background-image: repeating-linear-gradient(90deg, var(--mark) 0 18px, transparent 18px 36px);
  opacity: 0.8;
}

.lg-hud__title {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.2em;
  color: var(--dim);
  text-transform: uppercase;
}

.lg-hud__rows { margin-top: 18px; }

.lg-hud__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 0.86rem;
  color: var(--mute);
}

.lg-hud__row:last-child { border-bottom: 0; }

.lg-hud__row b {
  font-family: var(--mono);
  font-size: 1.06rem;
  color: var(--mark);
  font-weight: 700;
}

.lg-hud__foot {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.68rem;
  line-height: 1.9;
  color: var(--dim);
}

/* odometer digits */
.lg-odo {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-family: var(--mono);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.lg-odo b {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1;
  color: var(--chalk);
}

.lg-odo span {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--dim);
}

/* ---------- page head (sub pages) --------------------------------------- */

.lg-pagehead {
  position: relative;
  overflow: hidden;
  padding: 74px 0 56px;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(28, 122, 86, 0.1), transparent 78%),
    #101317;
}

.lg-pagehead__in {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 28px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  align-items: end;
}

.lg-pagehead h1 { font-size: clamp(2rem, 4.4vw, 3.2rem); margin: 14px 0 16px; }

.lg-pagehead .lg-lede { font-size: 1rem; }

.lg-pagehead__km {
  font-family: var(--mono);
  text-align: right;
  line-height: 1.2;
  color: var(--dim);
}

.lg-pagehead__km b {
  display: block;
  font-size: 2.6rem;
  color: var(--mark);
  letter-spacing: -0.03em;
}

.lg-pagehead__km span {
  font-size: 0.64rem;
  letter-spacing: 0.24em;
}

.lg-crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--dim);
}

.lg-crumbs a { color: var(--mute); }
.lg-crumbs a:hover { color: var(--mark); }
.lg-crumbs li + li::before { content: "/"; margin-right: 8px; color: var(--steel); }

/* ---------- km-stone section head --------------------------------------- */

.lg-head {
  display: flex;
  align-items: flex-start;
  gap: 22px;
  margin-bottom: 40px;
}

.lg-km {
  flex: 0 0 auto;
  width: 58px;
  padding-top: 8px;
  text-align: center;
}

.lg-km__post {
  position: relative;
  display: block;
  width: 44px;
  height: 56px;
  margin: 0 auto;
  background: var(--plate-2);
  border: 1px solid var(--line-2);
  border-radius: 20px 20px 2px 2px;
  font-family: var(--mono);
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--mark);
  line-height: 52px;
  white-space: nowrap;
  overflow: hidden;
}

.lg-km__post::after {
  content: "";
  position: absolute;
  left: 8px;
  right: 8px;
  bottom: 7px;
  height: 2px;
  background: var(--mark);
  opacity: 0.65;
}

.lg-km__scale {
  display: block;
  margin: 6px auto 0;
  width: 26px;
  height: 10px;
  background-image: repeating-linear-gradient(90deg, var(--line-2) 0 1px, transparent 1px 4px);
}

.lg-head__txt h2 { margin: 8px 0 12px; }
.lg-head__txt .lg-lede { font-size: 0.98rem; }

.lg-head--centre {
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.lg-head--centre .lg-head__txt .lg-lede { margin: 0 auto; }

/* ---------- cards -------------------------------------------------------- */

.lg-card {
  position: relative;
  padding: 26px 24px 28px;
  background: var(--plate);
  border: 1px solid var(--line);
  transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

.lg-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-image: repeating-linear-gradient(90deg, var(--mark) 0 16px, transparent 16px 32px);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.lg-card:hover {
  border-color: var(--line-2);
  background: var(--plate-2);
  transform: translateY(-3px);
}

.lg-card:hover::before { opacity: 1; }

.lg-card__tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mark);
  border: 1px solid rgba(245, 195, 59, 0.32);
  padding: 2px 8px;
}

.lg-card h3 { margin: 16px 0 10px; }

.lg-card p {
  font-size: 0.9rem;
  color: var(--mute);
}

.lg-card__no {
  position: absolute;
  top: 18px;
  right: 22px;
  font-family: var(--mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: rgba(242, 239, 230, 0.09);
  letter-spacing: -0.04em;
}

.lg-card__list {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--dim);
  line-height: 2;
}

.lg-card__list li::before {
  content: "—";
  margin-right: 8px;
  color: var(--mark);
}

.lg-card--flat { background: transparent; }
.lg-card--flat:hover { transform: none; background: var(--plate); }

/* ---------- route stops (timeline) -------------------------------------- */

.lg-route { position: relative; padding-left: 34px; }

.lg-route::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background-image: repeating-linear-gradient(180deg, var(--mark) 0 14px, transparent 14px 28px);
  opacity: 0.5;
}

.lg-stop {
  position: relative;
  padding: 0 0 30px 0;
}

.lg-stop:last-child { padding-bottom: 0; }

.lg-stop::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--asphalt);
  border: 2px solid var(--mark);
}

.lg-stop__meta {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  color: var(--dim);
  text-transform: uppercase;
}

.lg-stop h3 { margin: 6px 0 8px; font-size: 1.08rem; }

.lg-stop p {
  font-size: 0.9rem;
  color: var(--mute);
  max-width: 66ch;
}

/* ---------- spec sheet --------------------------------------------------- */

.lg-spec {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.lg-spec caption {
  text-align: left;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--dim);
  padding-bottom: 12px;
}

.lg-spec th,
.lg-spec td {
  text-align: left;
  padding: 13px 14px 13px 0;
  border-bottom: 1px dashed var(--line);
  vertical-align: top;
}

.lg-spec th {
  width: 30%;
  font-weight: 600;
  color: var(--mute);
  font-size: 0.84rem;
}

.lg-spec td { color: var(--chalk); }

.lg-spec td b {
  font-family: var(--mono);
  color: var(--mark);
  font-weight: 700;
}

.lg-spec--row th { width: auto; border-bottom: 1px solid var(--line); }

.lg-spec tr:hover td { background: rgba(255, 255, 255, 0.02); }

/* ---------- guide sign callout ------------------------------------------ */

.lg-sign {
  position: relative;
  padding: 24px 26px;
  background: rgba(28, 122, 86, 0.14);
  border: 1px solid rgba(28, 122, 86, 0.5);
  border-left: 4px solid var(--sign);
}

.lg-sign__top {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: #7fd3ac;
  margin-bottom: 8px;
}

.lg-sign p { font-size: 0.9rem; color: #d6e3da; }
.lg-sign strong { color: #fff; }

.lg-sign--warn {
  background: rgba(226, 102, 60, 0.1);
  border-color: rgba(226, 102, 60, 0.45);
  border-left-color: var(--warn);
}

.lg-sign--warn .lg-sign__top { color: #f0b199; }
.lg-sign--warn p { color: #ecd8d0; }

/* ---------- stats / kpi -------------------------------------------------- */

.lg-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.lg-stat {
  background: var(--tarmac);
  padding: 24px 22px 26px;
}

.lg-stat__num {
  font-family: var(--mono);
  font-size: clamp(1.8rem, 3.4vw, 2.5rem);
  font-weight: 700;
  color: var(--mark);
  letter-spacing: -0.04em;
  line-height: 1;
}

.lg-stat__num small { font-size: 0.8rem; letter-spacing: 0.08em; margin-left: 4px; }

.lg-stat__label {
  margin-top: 10px;
  font-size: 0.8rem;
  color: var(--mute);
}

/* ---------- checklist ---------------------------------------------------- */

.lg-check { display: grid; gap: 12px; }

.lg-check li {
  position: relative;
  padding-left: 30px;
  font-size: 0.9rem;
  color: var(--mute);
}

.lg-check li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 16px;
  height: 2px;
  background: var(--mark);
  box-shadow: 0 4px 0 rgba(245, 195, 59, 0.4);
}

.lg-check li b { color: var(--chalk); font-weight: 600; }

.lg-check--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 32px; }

/* ---------- quote -------------------------------------------------------- */

.lg-quote {
  position: relative;
  padding: 30px 30px 30px 34px;
  border-left: 3px solid var(--mark);
  background: var(--plate);
}

.lg-quote p {
  font-size: 1.06rem;
  line-height: 1.7;
  color: var(--chalk);
}

.lg-quote footer {
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--dim);
}

/* ---------- FAQ ---------------------------------------------------------- */

.lg-faq { border-top: 1px solid var(--line); }

.lg-faq details {
  border-bottom: 1px solid var(--line);
  padding: 4px 0;
}

.lg-faq summary {
  position: relative;
  padding: 18px 46px 18px 0;
  font-size: 0.98rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

.lg-faq summary::-webkit-details-marker { display: none; }

.lg-faq summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--mono);
  font-size: 1.1rem;
  color: var(--mark);
}

.lg-faq details[open] summary::after { content: "−"; }

.lg-faq details p {
  padding: 0 46px 20px 0;
  font-size: 0.9rem;
  color: var(--mute);
}

/* ---------- article prose ------------------------------------------------ */

.lg-article { max-width: 74ch; }

.lg-article p {
  margin: 0 0 20px;
  color: #d8d6cd;
  font-size: 1rem;
  line-height: 1.9;
}

.lg-article h2 {
  font-size: 1.42rem;
  margin: 40px 0 16px;
  padding-top: 18px;
  border-top: 1px dashed var(--line);
}

.lg-article h3 { font-size: 1.1rem; margin: 28px 0 12px; }

.lg-article ul { margin: 0 0 22px; }

.lg-article ul li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
  color: #cbc9c0;
  font-size: 0.96rem;
}

.lg-article ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 10px;
  height: 2px;
  background: var(--mark);
}

.lg-article blockquote {
  margin: 26px 0;
  padding: 20px 24px;
  border-left: 3px solid var(--mark);
  background: var(--plate);
  color: var(--mute);
  font-size: 0.96rem;
}

.lg-article__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-bottom: 26px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--dim);
}

.lg-tags { display: flex; flex-wrap: wrap; gap: 8px; }

.lg-tags li {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  color: var(--mute);
  border: 1px solid var(--line-2);
  padding: 4px 10px;
}

/* ---------- form --------------------------------------------------------- */

.lg-form { display: grid; gap: 18px; }

.lg-field { display: grid; gap: 7px; }

.lg-field label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dim);
}

.lg-field input,
.lg-field select,
.lg-field textarea {
  width: 100%;
  padding: 12px 14px;
  background: #0f1216;
  border: 1px solid var(--line-2);
  color: var(--chalk);
  font-family: var(--sans);
  font-size: 0.92rem;
  appearance: none;
  border-radius: 0;
  transition: border-color 0.16s ease;
}

.lg-field textarea { min-height: 118px; resize: vertical; }

.lg-field input:focus,
.lg-field select:focus,
.lg-field textarea:focus {
  outline: none;
  border-color: var(--mark);
}

.lg-field--half { grid-column: span 1; }

.lg-form__row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.lg-form__note {
  font-family: var(--mono);
  font-size: 0.68rem;
  line-height: 1.9;
  color: var(--dim);
}

/* ---------- contact blocks ---------------------------------------------- */

.lg-contact { display: grid; gap: 2px; }

.lg-contact__row {
  display: grid;
  grid-template-columns: 128px minmax(0, 1fr);
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 0.92rem;
}

.lg-contact__row dt {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dim);
  padding-top: 4px;
}

.lg-contact__row dd { margin: 0; color: var(--chalk); }
.lg-contact__row dd span { color: var(--mute); }

/* ---------- CTA band ----------------------------------------------------- */

.lg-cta {
  position: relative;
  overflow: hidden;
  padding: 64px 0;
  background:
    repeating-linear-gradient(135deg, rgba(245, 195, 59, 0.05) 0 12px, transparent 12px 24px),
    var(--plate);
  border-top: 1px solid var(--line-2);
  border-bottom: 1px solid var(--line-2);
}

.lg-cta__in {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 26px;
  align-items: center;
  justify-content: space-between;
}

.lg-cta h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); margin-bottom: 10px; }
.lg-cta p { color: var(--mute); font-size: 0.94rem; max-width: 60ch; }

.lg-cta__acts { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- misc --------------------------------------------------------- */

.lg-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 4px 10px;
  border: 1px solid var(--line-2);
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  color: var(--mute);
}

.lg-badge::before {
  content: "";
  width: 5px;
  height: 5px;
  background: var(--mark);
}

.lg-mono { font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.06em; color: var(--dim); }

.lg-split {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.lg-mt-s { margin-top: 14px; }
.lg-mt-m { margin-top: 26px; }
.lg-mt-l { margin-top: 40px; }
.lg-mb { margin-bottom: 18px; }

.lg-figure {
  position: relative;
  border: 1px solid var(--line);
  background: var(--tarmac);
  padding: 22px;
}

.lg-figure__cap {
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  color: var(--dim);
}

/* lane divider inside sections */
.lg-divider {
  height: 1px;
  margin: 46px 0;
  background-image: repeating-linear-gradient(90deg, var(--line-2) 0 28px, transparent 28px 56px);
}

/* ---------- responsive --------------------------------------------------- */

@media (max-width: 1080px) {
  .lg-hero__in { grid-template-columns: minmax(0, 1fr); gap: 34px; }
  .lg-hud { max-width: 460px; }
  .lg-pagehead__km { display: none; }
  .lg-pagehead__in { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 860px) {
  .lg-hero { padding: 78px 0 62px; }
  .lg-rec { top: 16px; right: 20px; }
  .lg-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lg-check--2 { grid-template-columns: minmax(0, 1fr); }
  .lg-form__row { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 640px) {
  .lg-head { gap: 14px; }
  .lg-km { width: 44px; }
  .lg-km__post { width: 38px; height: 48px; line-height: 44px; font-size: 0.78rem; }
  .lg-stats { grid-template-columns: minmax(0, 1fr); }
  .lg-contact__row { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .lg-article { max-width: 100%; }
  .lg-cta__in { flex-direction: column; align-items: flex-start; }
  .lg-road { height: 62%; }
  .lg-article h2 { font-size: 1.24rem; }
}