/* ==========================================================================
   蓝冠娱乐 · MILE MARK「里程桩」design system
   route.css — tokens / reset / type / page shell (top bar, gauge, footer)
   Prefix: lg-
   Zero images, zero external fonts, zero framework.
   ========================================================================== */

:root {
  --asphalt: #0d0f12;
  --tarmac: #14171c;
  --plate: #191d24;
  --plate-2: #21262e;
  --steel: #2b323c;
  --chalk: #f2efe6;
  --mute: #a8a9a1;
  --dim: #74797f;
  --mark: #f5c33b;
  --mark-deep: #c1922a;
  --sign: #1c7a56;
  --warn: #e2663c;
  --line: rgba(242, 239, 230, 0.13);
  --line-2: rgba(242, 239, 230, 0.26);
  --wrap: 1240px;
  --mono: "Consolas", "SFMono-Regular", "Courier New", monospace;
  --sans: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 108px;
}

body {
  margin: 0;
  background: var(--asphalt);
  color: var(--chalk);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.78;
  -webkit-font-smoothing: antialiased;
  background-image: repeating-linear-gradient(114deg, rgba(255, 255, 255, 0.015) 0 2px, transparent 2px 10px);
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
p { margin: 0; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.4rem, 6vw, 4.6rem); }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.7rem); }
h3 { font-size: 1.18rem; }
h4 { font-size: 1rem; }

::selection { background: var(--mark); color: #101215; }

:focus-visible {
  outline: 2px solid var(--mark);
  outline-offset: 3px;
}

/* ---------- layout ------------------------------------------------------- */

.lg-wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 28px;
}

.lg-sec {
  position: relative;
  padding: 96px 0;
  border-top: 1px solid var(--line);
}

.lg-sec--flush { border-top: 0; }
.lg-sec--tight { padding: 64px 0; }
.lg-sec--plate { background: var(--tarmac); }

.lg-grid {
  display: grid;
  gap: 28px;
}

.lg-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.lg-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.lg-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.lg-grid--main { grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); }

.lg-stack > * + * { margin-top: 18px; }

/* ---------- type --------------------------------------------------------- */

.lg-eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--mark);
}

.lg-lede {
  max-width: 62ch;
  color: var(--mute);
  font-size: 1.06rem;
}

.lg-note {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--dim);
}

.lg-body p + p { margin-top: 14px; }

.lg-body strong { color: var(--chalk); }
.lg-body em { font-style: normal; color: var(--mark); }

.lg-mark {
  color: var(--mark);
}

.lg-rule {
  height: 1px;
  background: var(--line);
  border: 0;
  margin: 0;
}

/* dashed centre line — the repeating motif of the whole system */
.lg-lane {
  height: 6px;
  background-image: repeating-linear-gradient(90deg, var(--mark) 0 26px, transparent 26px 52px);
  opacity: 0.55;
}

/* ---------- buttons ------------------------------------------------------ */

.lg-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 24px;
  background: var(--mark);
  color: #111317;
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  border: 1px solid var(--mark);
  transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease;
}

.lg-btn::after {
  content: "→";
  font-family: var(--mono);
  font-size: 0.9rem;
}

.lg-btn:hover {
  background: transparent;
  color: var(--mark);
}

.lg-btn--line {
  background: transparent;
  border-color: var(--line-2);
  color: var(--chalk);
}

.lg-btn--line:hover {
  border-color: var(--mark);
  color: var(--mark);
  background: transparent;
}

.lg-btn--line::after { content: none; }

.lg-btn--sm { padding: 9px 16px; font-size: 0.82rem; }

.lg-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mark);
  border-bottom: 1px solid transparent;
  transition: border-color 0.18s ease;
}

.lg-link:hover { border-color: var(--mark); }

/* ---------- top bar ------------------------------------------------------ */

.lg-bar {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(13, 15, 18, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.lg-bar__in {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 28px;
  height: 78px;
  display: flex;
  align-items: center;
  gap: 26px;
}

.lg-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}

.lg-brand__mark {
  position: relative;
  width: 30px;
  height: 38px;
  background: var(--mark);
  border-radius: 15px 15px 2px 2px;
  display: block;
}

.lg-brand__mark i {
  position: absolute;
  left: 6px;
  right: 6px;
  bottom: 9px;
  height: 2px;
  background: #111317;
  box-shadow: 0 -5px 0 #111317, 0 -10px 0 rgba(17, 19, 23, 0.45);
}

.lg-brand__txt {
  display: block;
  font-size: 1.14rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  line-height: 1.1;
}

.lg-brand__txt em {
  display: block;
  font-family: var(--mono);
  font-style: normal;
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--dim);
  margin-top: 3px;
}

.lg-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.lg-nav a {
  position: relative;
  padding: 8px 12px;
  font-size: 0.9rem;
  color: var(--mute);
  transition: color 0.16s ease;
}

.lg-nav a:hover { color: var(--chalk); }

.lg-nav a[aria-current="page"] { color: var(--chalk); }

.lg-nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 0;
  height: 2px;
  background: var(--mark);
}

.lg-bar__act {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.lg-burger {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 8px 0 8px 10px;
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--mute);
}

.lg-burger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--chalk);
  position: relative;
}

.lg-burger span:nth-child(2) { opacity: 0.7; }
.lg-burger span:nth-child(3) { opacity: 0.4; }
.lg-burger em { font-style: normal; }

/* scroll gauge under the bar */
.lg-gauge {
  position: relative;
  height: 3px;
  background: rgba(242, 239, 230, 0.08);
}

.lg-gauge__fill {
  display: block;
  height: 100%;
  width: 0;
  background: var(--mark);
  transition: width 0.12s linear;
}

.lg-gauge__km {
  position: absolute;
  right: max(28px, calc((100vw - var(--wrap)) / 2 + 28px));
  top: 8px;
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  color: var(--dim);
  background: var(--asphalt);
  padding: 0 4px;
}

/* ---------- right telemetry dock ---------------------------------------- */

.lg-dock {
  position: fixed;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 40;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 14px;
  pointer-events: none;
}

.lg-dock__label {
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.24em;
  color: var(--dim);
  writing-mode: vertical-rl;
}

.lg-dock ol {
  display: flex;
  flex-direction: column;
  gap: 12px;
  pointer-events: auto;
}

.lg-dock a {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--dim);
  transition: color 0.16s ease;
}

.lg-dock a::after {
  content: "";
  width: 12px;
  height: 2px;
  background: currentColor;
  transition: width 0.18s ease;
}

.lg-dock a:hover,
.lg-dock a.is-on { color: var(--mark); }
.lg-dock a.is-on::after { width: 26px; }

/* ---------- footer ------------------------------------------------------- */

.lg-foot {
  border-top: 1px solid var(--line);
  background: #0a0c0e;
}

.lg-foot__sign {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  justify-content: space-between;
  padding: 14px 28px;
  background: var(--sign);
  color: #eef6f0;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.lg-foot__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 0.7fr));
  gap: 36px;
  padding-top: 64px;
  padding-bottom: 48px;
}

.lg-foot__logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.lg-foot__desc {
  margin-top: 14px;
  max-width: 44ch;
  font-size: 0.88rem;
  color: var(--mute);
}

.lg-foot__meta {
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--dim);
  line-height: 2;
}

.lg-foot__col h3 {
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 16px;
}

.lg-foot__col li + li { margin-top: 9px; }

.lg-foot__col a {
  font-size: 0.88rem;
  color: var(--mute);
  transition: color 0.16s ease;
}

.lg-foot__col a:hover { color: var(--mark); }

.lg-foot__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 28px;
  justify-content: space-between;
  align-items: center;
  padding-top: 22px;
  padding-bottom: 34px;
  border-top: 1px solid var(--line);
}

.lg-foot__legal ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.lg-foot__legal a {
  font-size: 0.76rem;
  color: var(--dim);
}

.lg-foot__legal a:hover { color: var(--mark); }

.lg-foot__copy {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  color: var(--dim);
}

/* ---------- skip link ---------------------------------------------------- */

.lg-skip {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 99;
  padding: 10px 18px;
  background: var(--mark);
  color: #111317;
  font-size: 0.84rem;
  font-weight: 700;
  transition: top 0.2s ease;
}

.lg-skip:focus { top: 12px; }

/* ---------- reveal ------------------------------------------------------- */

.lg-reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.lg-reveal.is-in {
  opacity: 1;
  transform: none;
}

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

@media (max-width: 1180px) {
  .lg-dock { display: none; }
  .lg-nav a { padding: 8px 9px; font-size: 0.85rem; }
}

@media (max-width: 980px) {
  .lg-sec { padding: 72px 0; }
  .lg-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lg-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lg-grid--main { grid-template-columns: minmax(0, 1fr); }
  .lg-foot__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); padding-top: 48px; }
}

@media (max-width: 860px) {
  .lg-bar__in { height: 66px; gap: 14px; }
  .lg-nav {
    position: fixed;
    inset: 66px 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 10px 20px 24px;
    background: rgba(11, 13, 16, 0.98);
    border-bottom: 1px solid var(--line);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  }
  .lg-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .lg-nav a {
    padding: 13px 4px;
    font-size: 1rem;
    border-bottom: 1px solid var(--line);
  }
  .lg-nav a[aria-current="page"]::after { display: none; }
  .lg-bar__act { display: none; }
  .lg-burger { display: flex; }
  .lg-gauge__km { display: none; }
}

@media (max-width: 640px) {
  .lg-wrap { padding: 0 20px; }
  .lg-sec { padding: 56px 0; }
  .lg-grid--2,
  .lg-grid--3,
  .lg-grid--4 { grid-template-columns: minmax(0, 1fr); }
  .lg-foot__grid { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .lg-foot__legal { flex-direction: column; align-items: flex-start; }
  .lg-bar__in { padding: 0 20px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  .lg-reveal { opacity: 1; transform: none; }
}