/* 位跃产品页视觉令牌：深空背景搭配青绿色交互高光。 */
:root {
  --ink: #f3f7f5;
  --muted: #8b9b9e;
  --muted-strong: #b7c5c5;
  --background: #070b12;
  --surface: rgba(16, 25, 30, 0.75);
  --surface-solid: #101a1f;
  --line: rgba(156, 196, 194, 0.14);
  --line-strong: rgba(157, 212, 205, 0.3);
  --mint: #63e6c4;
  --mint-strong: #2bd5aa;
  --mint-soft: #b0f8e2;
  --violet: #9c87ff;
  --amber: #f5bc76;
  --danger: #ff8d7d;
  --content-width: 1180px;
  --radius-large: 28px;
  --radius-medium: 18px;
  --shadow-console: 0 32px 90px rgba(0, 0, 0, 0.48), 0 0 0 1px rgba(109, 235, 205, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 80% 4%, rgba(42, 117, 108, 0.13), transparent 28rem),
    radial-gradient(circle at 12% 62%, rgba(80, 48, 132, 0.09), transparent 27rem),
    var(--background);
  font-family: "Microsoft YaHei UI", "PingFang SC", "Noto Sans SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -3;
  pointer-events: none;
  content: "";
  opacity: 0.24;
  background-image: linear-gradient(rgba(130, 184, 181, 0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(130, 184, 181, 0.03) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: linear-gradient(to bottom, black, transparent 86%);
}

a {
  color: inherit;
  text-decoration: none;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  color: inherit;
  font: inherit;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 4px;
}

em {
  color: var(--mint);
  font-style: normal;
}

.container {
  width: min(calc(100% - 64px), var(--content-width));
  margin-inline: auto;
}

.ambient {
  position: absolute;
  z-index: -2;
  width: 32rem;
  height: 32rem;
  pointer-events: none;
  border-radius: 50%;
  filter: blur(4px);
  opacity: 0.3;
}

.ambient--top {
  top: 8rem;
  right: -15rem;
  background: radial-gradient(circle, rgba(71, 231, 194, 0.11), transparent 66%);
}

.ambient--bottom {
  bottom: 12rem;
  left: -20rem;
  background: radial-gradient(circle, rgba(149, 93, 246, 0.13), transparent 66%);
}

.noise {
  position: fixed;
  inset: 0;
  z-index: 20;
  pointer-events: none;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid transparent;
  background: rgba(7, 11, 18, 0.68);
  backdrop-filter: blur(18px);
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(7, 11, 18, 0.9);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 24px;
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
}

.brand-mark,
.footer-mark {
  display: grid;
  place-items: center;
  width: 31px;
  height: 31px;
  overflow: hidden;
  border: 1px solid rgba(116, 239, 207, 0.45);
  border-radius: 10px;
  background: linear-gradient(145deg, rgba(89, 231, 194, 0.22), rgba(33, 97, 95, 0.3));
  box-shadow: 0 0 18px rgba(71, 231, 194, 0.13);
}

.brand-mark img,
.footer-mark img {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand-copy strong {
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.brand-copy span {
  margin-top: 5px;
  color: var(--muted);
  font-size: 8px;
  letter-spacing: 0.26em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 38px;
  margin-left: auto;
  margin-right: 25px;
}

.main-nav a {
  position: relative;
  color: var(--muted-strong);
  font-size: 13px;
  transition: color 180ms ease;
}

.main-nav a::after {
  position: absolute;
  right: 0;
  bottom: -9px;
  left: 0;
  height: 1px;
  content: "";
  background: var(--mint);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.main-nav a:hover,
.main-nav a.is-active {
  color: var(--mint-soft);
}

.main-nav a:hover::after,
.main-nav a.is-active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 48px;
  padding: 0 19px;
  border: 1px solid transparent;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: border-color 180ms ease, background 180ms ease, color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button--nav {
  min-height: 38px;
  padding-inline: 16px;
  border-color: rgba(110, 222, 192, 0.3);
  background: rgba(67, 207, 172, 0.08);
  color: var(--mint-soft);
}

.button--nav:hover {
  border-color: rgba(110, 222, 192, 0.6);
  background: rgba(67, 207, 172, 0.16);
  box-shadow: 0 0 24px rgba(53, 221, 181, 0.13);
}

.button--primary {
  color: #06130f;
  background: linear-gradient(135deg, #9df6dc 0%, #5fe4c0 55%, #35c9a5 100%);
  box-shadow: 0 10px 30px rgba(65, 219, 180, 0.16), inset 0 1px rgba(255, 255, 255, 0.58);
}

.button--primary:hover {
  box-shadow: 0 14px 36px rgba(65, 219, 180, 0.28), inset 0 1px rgba(255, 255, 255, 0.58);
}

.button--ghost {
  border-color: var(--line-strong);
  color: var(--muted-strong);
  background: rgba(11, 20, 24, 0.42);
}

.button--ghost:hover {
  border-color: rgba(157, 212, 205, 0.58);
  color: var(--mint-soft);
  background: rgba(24, 54, 54, 0.5);
}

.button-arrow {
  color: currentColor;
  font-size: 18px;
  font-weight: 400;
  line-height: 1;
}

.button-icon {
  display: grid;
  place-items: center;
  width: 19px;
  height: 19px;
}

.button-icon svg {
  width: 100%;
  height: 100%;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.89fr) minmax(0, 1.11fr);
  align-items: center;
  min-height: 660px;
  gap: 62px;
  padding-top: 65px;
  padding-bottom: 80px;
}

.hero-copy {
  position: relative;
  z-index: 1;
  padding-bottom: 20px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--mint);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 12px rgba(99, 230, 196, 0.9);
}

.hero h1 {
  max-width: 530px;
  margin: 23px 0 21px;
  color: var(--ink);
  font-size: clamp(43px, 5vw, 67px);
  font-weight: 650;
  letter-spacing: -0.075em;
  line-height: 1.12;
}

.hero h1 em {
  display: block;
  color: transparent;
  background: linear-gradient(100deg, #78ebc8 12%, #c1ffe9 48%, #8db5ff 94%);
  background-clip: text;
  -webkit-background-clip: text;
}

.hero-description {
  max-width: 445px;
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 33px;
}

.download-hint {
  min-height: 25px;
  margin: 16px 0 0;
  color: #688080;
  font-size: 11px;
  letter-spacing: 0.02em;
}

.download-hint.is-warning,
.download-status.is-warning {
  color: var(--amber);
}

.download-hint.is-ready,
.download-status.is-ready {
  color: var(--mint);
}

.hero-visual {
  position: relative;
  min-width: 0;
  padding: 24px 0 10px 17px;
}

.visual-glow {
  position: absolute;
  top: 20%;
  right: 0;
  width: 75%;
  height: 62%;
  pointer-events: none;
  border-radius: 50%;
  background: rgba(54, 208, 170, 0.14);
  filter: blur(70px);
}

.console-shell {
  position: relative;
  z-index: 1;
  overflow: hidden;
  border: 1px solid rgba(151, 227, 213, 0.21);
  border-radius: 16px;
  background: rgba(13, 23, 28, 0.88);
  box-shadow: var(--shadow-console);
  transform: perspective(1500px) rotateY(-2deg) rotateX(1deg);
  transition: transform 500ms ease, box-shadow 500ms ease;
}

.hero-visual:hover .console-shell {
  box-shadow: 0 38px 100px rgba(0, 0, 0, 0.54), 0 0 0 1px rgba(109, 235, 205, 0.16), 0 0 80px rgba(39, 174, 144, 0.08);
  transform: perspective(1500px) rotateY(0) rotateX(0) translateY(-4px);
}

.console-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 43px;
  padding: 0 15px;
  border-bottom: 1px solid rgba(159, 207, 201, 0.1);
  background: rgba(7, 15, 19, 0.73);
}

.window-controls {
  display: flex;
  gap: 6px;
  width: 80px;
}

.window-controls span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #334449;
}

.window-controls span:first-child {
  background: #d57b77;
}

.console-title {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: #afc2c0;
  font-size: 10px;
  letter-spacing: 0.08em;
}

.tiny-mark {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 8px var(--mint);
}

.console-version {
  width: 80px;
  color: #617478;
  font-size: 9px;
  text-align: right;
}

.console-version span {
  margin-left: 5px;
  color: var(--violet);
  font-size: 8px;
  letter-spacing: 0.12em;
}

.console-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 185px;
  min-height: 360px;
}

.map-panel {
  position: relative;
  min-width: 0;
  min-height: 360px;
  overflow: hidden;
  border-right: 1px solid rgba(159, 207, 201, 0.1);
  background: #14262b;
}

.map-panel::before {
  position: absolute;
  inset: -20%;
  content: "";
  opacity: 0.35;
  background: radial-gradient(ellipse at 68% 40%, rgba(74, 192, 168, 0.24), transparent 38%), radial-gradient(ellipse at 25% 78%, rgba(101, 79, 174, 0.2), transparent 44%);
}

.map-toolbar {
  position: absolute;
  top: 15px;
  right: 15px;
  left: 15px;
  z-index: 5;
  display: flex;
  gap: 8px;
}

.map-search {
  display: flex;
  align-items: center;
  min-width: 0;
  height: 34px;
  flex: 1;
  gap: 8px;
  padding: 0 9px;
  border: 1px solid rgba(171, 218, 210, 0.17);
  border-radius: 7px;
  color: #789092;
  background: rgba(7, 16, 20, 0.8);
  box-shadow: 0 5px 18px rgba(0, 0, 0, 0.12);
  font-size: 9px;
}

.map-search svg {
  width: 14px;
  flex: none;
}

.map-search span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

kbd {
  margin-left: auto;
  padding: 2px 4px;
  border: 1px solid rgba(149, 201, 194, 0.16);
  border-radius: 3px;
  color: #5d7679;
  font: inherit;
  font-size: 8px;
}

.map-tool {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex: none;
  border: 1px solid rgba(171, 218, 210, 0.17);
  border-radius: 7px;
  color: #8fb8b2;
  background: rgba(7, 16, 20, 0.8);
  cursor: default;
}

.map-tool svg {
  width: 16px;
}

.map-grid {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background-image: linear-gradient(rgba(138, 196, 188, 0.1) 1px, transparent 1px), linear-gradient(90deg, rgba(138, 196, 188, 0.1) 1px, transparent 1px);
  background-position: center;
  background-size: 51px 51px;
  mask-image: linear-gradient(to bottom, transparent 0, black 15%, black 89%, transparent 100%);
}

.map-grid::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(105deg, transparent 20%, rgba(105, 242, 207, 0.08) 50%, transparent 80%);
  transform: translateX(-100%);
  animation: map-scan 7s ease-in-out infinite;
}

.map-contour,
.map-road,
.map-route,
.map-route-line {
  position: absolute;
  pointer-events: none;
}

.map-contour {
  border: 1px solid rgba(97, 178, 163, 0.18);
  border-radius: 44% 56% 39% 61%;
  transform: rotate(-24deg);
}

.map-contour--one { top: 37%; left: 18%; width: 47%; height: 52%; }
.map-contour--two { top: 47%; left: 30%; width: 43%; height: 48%; transform: rotate(15deg); opacity: 0.72; }
.map-contour--three { top: 15%; right: -7%; width: 48%; height: 51%; transform: rotate(-42deg); opacity: 0.62; }

.map-road {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(141, 185, 177, 0.28), transparent);
  transform-origin: left;
}

.map-road--one { top: 49%; left: 0; width: 100%; transform: rotate(15deg); }
.map-road--two { top: 72%; left: 4%; width: 78%; transform: rotate(-29deg); }
.map-road--three { top: 34%; left: 20%; width: 82%; transform: rotate(-55deg); opacity: 0.65; }

.map-route {
  top: 52%;
  left: 24%;
  width: 55%;
  height: 2px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 8px var(--mint), 0 0 22px rgba(99, 230, 196, 0.7);
  transform: rotate(-29deg);
  transform-origin: left center;
}

.map-route::before,
.map-route::after {
  position: absolute;
  top: -3px;
  width: 8px;
  height: 8px;
  border: 1px solid rgba(145, 246, 215, 0.62);
  border-radius: 50%;
  content: "";
  background: #1a7a6a;
}

.map-route::before { left: 0; }
.map-route::after { right: 0; }

.map-route-line {
  top: 44%;
  left: 19%;
  width: 64%;
  height: 18%;
  border-top: 1px dashed rgba(104, 229, 195, 0.45);
  border-right: 1px dashed rgba(104, 229, 195, 0.45);
  border-radius: 0 100% 0 0;
  transform: rotate(-10deg);
}

.map-pin {
  position: absolute;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 16px;
  height: 16px;
  border: 1px solid rgba(197, 255, 237, 0.82);
  border-radius: 50% 50% 50% 0;
  background: rgba(34, 181, 145, 0.85);
  box-shadow: 0 0 0 5px rgba(80, 225, 188, 0.12), 0 0 19px rgba(80, 225, 188, 0.8);
  transform: rotate(-45deg);
}

.map-pin span {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #e4fff6;
  transform: rotate(45deg);
}

.map-pin--start { top: 56%; left: 22%; }
.map-pin--target { top: 31%; left: 66%; background: rgba(129, 104, 226, 0.9); box-shadow: 0 0 0 5px rgba(155, 130, 255, 0.12), 0 0 19px rgba(155, 130, 255, 0.8); }

.map-coordinate {
  position: absolute;
  z-index: 3;
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 6px 8px;
  border: 1px solid rgba(160, 213, 205, 0.15);
  border-radius: 5px;
  background: rgba(6, 19, 21, 0.82);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.12);
  line-height: 1.25;
}

.map-coordinate span { color: #6e8c8e; font-size: 7px; }
.map-coordinate strong { color: #c0e9df; font-size: 8px; font-weight: 600; letter-spacing: 0.03em; }
.map-coordinate--start { top: 63%; left: 14%; }
.map-coordinate--target { top: 20%; left: 59%; }

.map-scale {
  position: absolute;
  right: 14px;
  bottom: 14px;
  display: flex;
  align-items: flex-end;
  gap: 6px;
  color: #6c8b8c;
  font-size: 8px;
}

.map-scale span {
  width: 34px;
  height: 5px;
  border: 1px solid rgba(173, 215, 208, 0.52);
  border-top: 0;
}

.map-float {
  position: absolute;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid rgba(148, 217, 203, 0.2);
  border-radius: 8px;
  background: rgba(8, 22, 24, 0.86);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.map-float small,
.map-float strong {
  display: block;
  line-height: 1.3;
}

.map-float small { color: #749090; font-size: 7px; }
.map-float strong { color: #c9ece3; font-size: 9px; font-weight: 600; }
.map-float--route { right: 15px; bottom: 16px; }
.map-float--location { top: 94px; left: 16px; padding: 7px 9px; }
.float-icon { color: var(--mint); font-size: 21px; line-height: 0.7; }
.float-status { margin-left: 5px; color: var(--mint); font-size: 7px; }

.location-pulse {
  position: relative;
  display: grid;
  place-items: center;
  width: 17px;
  height: 17px;
  border: 1px solid rgba(106, 235, 201, 0.45);
  border-radius: 50%;
}

.location-pulse::before {
  position: absolute;
  inset: -4px;
  border: 1px solid rgba(106, 235, 201, 0.2);
  border-radius: inherit;
  content: "";
  animation: pulse 2.1s ease-out infinite;
}

.location-pulse i { width: 5px; height: 5px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 9px var(--mint); }

.device-panel {
  padding: 17px 14px 13px;
  background: rgba(8, 17, 21, 0.82);
}

.device-panel-heading,
.panel-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.device-panel-heading {
  color: #bdcecc;
  font-size: 10px;
  font-weight: 600;
}

.panel-menu { color: #5f7578; letter-spacing: 0.1em; }

.device-status-card {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  padding: 9px 8px;
  border: 1px solid rgba(139, 198, 188, 0.13);
  border-radius: 7px;
  background: rgba(28, 55, 55, 0.36);
}

.device-avatar {
  display: grid;
  place-items: center;
  width: 26px;
  height: 30px;
  border-radius: 5px;
  color: var(--mint);
  background: rgba(74, 218, 179, 0.12);
}

.device-avatar svg { width: 17px; }
.device-name { min-width: 0; flex: 1; }
.device-name strong, .device-name span { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.device-name strong { color: #c9dfdc; font-size: 9px; font-weight: 600; }
.device-name span { margin-top: 2px; color: var(--mint); font-size: 7px; }
.device-name i { display: inline-block; width: 4px; height: 4px; margin-right: 4px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 6px var(--mint); }
.device-more { color: #698083; font-size: 17px; }
.panel-divider { height: 1px; margin: 17px 0; background: rgba(152, 205, 197, 0.1); }
.panel-label { color: #617779; font-size: 8px; letter-spacing: 0.06em; }
.panel-label--spaced { margin-top: 18px; }

.coordinate-reading {
  display: flex;
  align-items: baseline;
  gap: 2px;
  margin-top: 7px;
  color: #bcd7d2;
  font-variant-numeric: tabular-nums;
}

.coordinate-reading strong { font-size: 13px; font-weight: 500; letter-spacing: -0.05em; }
.coordinate-reading span { margin-right: 4px; color: #6f9290; font-size: 7px; }

.mode-switch {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3px;
  margin-top: 7px;
  padding: 3px;
  border-radius: 6px;
  background: rgba(16, 35, 36, 0.8);
}

.mode-switch span { padding: 4px 0; border-radius: 4px; color: #658081; font-size: 8px; text-align: center; }
.mode-switch .is-active { color: #a6f3de; background: rgba(70, 201, 164, 0.19); }

.console-action {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 30px;
  gap: 6px;
  margin-top: 18px;
  border: 0;
  border-radius: 5px;
  color: #0b2520;
  background: var(--mint);
  font-size: 9px;
  font-weight: 700;
}

.action-dot { width: 5px; height: 5px; border-radius: 50%; background: #0d5948; }
.panel-footer { margin-top: 10px; color: #50696c; font-size: 7px; }
.panel-footer span:first-child { color: #72bb9f; }

.visual-caption {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 15px;
  color: #597274;
  font-size: 9px;
  letter-spacing: 0.1em;
}

.caption-line { display: inline-block; width: 30px; height: 1px; background: rgba(98, 229, 194, 0.45); }

.signal-strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(13, 22, 26, 0.48);
}

.signal-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  min-height: 81px;
}

.signal-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-right: 30px;
  border-right: 1px solid var(--line);
  color: var(--muted-strong);
  font-size: 12px;
}

.signal-item:not(:first-child) { padding-left: 30px; }
.signal-item:last-of-type { border-right: 0; }
.signal-index { color: var(--mint); font: 10px/1 "Segoe UI", sans-serif; letter-spacing: 0.08em; }
.signal-decoration { position: absolute; right: -40px; bottom: -1px; width: 78px; height: 1px; background: linear-gradient(90deg, transparent, var(--mint)); }

.section { padding-top: 142px; }

.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 45px;
  margin-bottom: 47px;
}

.section-heading h2 {
  margin: 18px 0 0;
  color: var(--ink);
  font-size: clamp(33px, 4.1vw, 50px);
  font-weight: 600;
  letter-spacing: -0.065em;
  line-height: 1.2;
}

.section-heading h2 em { color: transparent; background: linear-gradient(100deg, var(--mint), #a4bcff); background-clip: text; -webkit-background-clip: text; }
.section-heading > p { max-width: 300px; margin: 0 0 4px; color: var(--muted); font-size: 13px; line-height: 1.85; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
}

.feature-card {
  position: relative;
  min-height: 390px;
  overflow: hidden;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-medium);
  background: linear-gradient(145deg, rgba(21, 36, 40, 0.9), rgba(11, 20, 25, 0.8));
  transition: border-color 250ms ease, transform 250ms ease, box-shadow 250ms ease;
}

.feature-card:hover { border-color: rgba(143, 222, 207, 0.38); transform: translateY(-6px); box-shadow: 0 20px 44px rgba(0, 0, 0, 0.25); }
.feature-card::before { position: absolute; top: -100px; right: -80px; width: 230px; height: 230px; border-radius: 50%; content: ""; opacity: 0.12; filter: blur(10px); }
.feature-card--mint::before { background: var(--mint); }
.feature-card--violet::before { background: var(--violet); }
.feature-card--amber::before { background: var(--amber); }
.card-topline { display: flex; justify-content: space-between; color: #647a7c; font: 9px/1 "Segoe UI", sans-serif; letter-spacing: 0.13em; text-transform: uppercase; }
.card-corner { color: var(--muted-strong); font-size: 15px; line-height: 0.5; }
.feature-icon { display: grid; place-items: center; width: 51px; height: 51px; margin-top: 48px; border: 1px solid currentColor; border-radius: 15px; background: rgba(63, 198, 166, 0.09); }
.feature-card--mint .feature-icon { color: var(--mint); }
.feature-card--violet .feature-icon { color: var(--violet); background: rgba(141, 113, 236, 0.09); }
.feature-card--amber .feature-icon { color: var(--amber); background: rgba(239, 174, 96, 0.09); }
.feature-icon svg { width: 31px; height: 31px; }
.feature-card h3 { margin: 24px 0 10px; color: #dfeae8; font-size: 20px; font-weight: 600; letter-spacing: -0.04em; }
.feature-card p { max-width: 240px; margin: 0; color: var(--muted); font-size: 12px; line-height: 1.85; }

.card-visual { position: absolute; right: 26px; bottom: 24px; width: 106px; height: 76px; opacity: 0.63; }
.card-visual::before, .card-visual::after { position: absolute; content: ""; }
.card-visual--target::before { inset: 7px 15px 9px 14px; border: 1px solid rgba(100, 229, 195, 0.46); border-radius: 50%; box-shadow: 0 0 0 12px rgba(100, 229, 195, 0.04), 0 0 0 25px rgba(100, 229, 195, 0.035); }
.card-visual--target::after { top: 24px; left: 52px; width: 1px; height: 27px; background: rgba(100, 229, 195, 0.7); transform: rotate(45deg); }
.card-visual--target span { position: absolute; top: 38px; left: 48px; z-index: 1; width: 9px; height: 9px; border: 2px solid var(--mint); border-radius: 50% 50% 50% 0; background: #14292b; transform: rotate(-45deg); }
.card-visual--target i, .card-visual--target b { position: absolute; bottom: 0; width: 1px; height: 8px; background: rgba(100, 229, 195, 0.4); }
.card-visual--target i { left: 17px; } .card-visual--target b { right: 20px; }
.card-visual--route::before { top: 20px; left: 6px; width: 93px; height: 36px; border-top: 1px solid var(--violet); border-radius: 50%; transform: rotate(-24deg); box-shadow: 0 -9px 0 -8px rgba(156, 135, 255, 0.45), 0 9px 0 -8px rgba(156, 135, 255, 0.35); }
.card-visual--route::after { bottom: 9px; left: 0; width: 105px; border-top: 1px dashed rgba(156, 135, 255, 0.35); }
.card-visual--route span, .card-visual--route i { position: absolute; width: 7px; height: 7px; border: 1px solid #d8d0ff; border-radius: 50%; background: #211b4a; }
.card-visual--route span { top: 38px; left: 7px; } .card-visual--route i { top: 9px; right: 4px; }
.card-visual--route b { position: absolute; top: 20px; right: 32px; width: 5px; height: 5px; border-radius: 50%; background: var(--violet); box-shadow: 0 0 10px var(--violet); }
.card-visual--device::before { bottom: 8px; left: 4px; width: 34px; height: 49px; border: 1px solid rgba(245, 188, 118, 0.7); border-radius: 6px; }
.card-visual--device::after { bottom: 30px; left: 37px; width: 63px; height: 1px; border-top: 1px dashed rgba(245, 188, 118, 0.58); }
.card-visual--device span { position: absolute; right: 1px; bottom: 8px; width: 32px; height: 32px; border: 1px solid rgba(245, 188, 118, 0.58); border-radius: 50%; }
.card-visual--device span::before { position: absolute; top: 8px; left: 8px; width: 14px; height: 14px; border: 1px solid var(--amber); border-radius: 50%; content: ""; box-shadow: 0 0 12px rgba(245, 188, 118, 0.38); }
.card-visual--device i { position: absolute; bottom: 31px; left: 19px; width: 5px; height: 5px; border-radius: 50%; background: var(--amber); }
.card-visual--device b { position: absolute; right: 14px; bottom: 23px; width: 5px; height: 5px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 8px var(--amber); }

.workflow-section {
  position: relative;
  margin-top: 142px;
  padding-bottom: 139px;
  background: linear-gradient(180deg, transparent, rgba(18, 31, 34, 0.45) 20%, rgba(18, 31, 34, 0.45) 82%, transparent);
}

.workflow-section::before { position: absolute; top: 0; left: 50%; width: 1px; height: 100%; content: ""; background: linear-gradient(transparent, rgba(99, 230, 196, 0.08), transparent); }
.section-heading--center { align-items: flex-end; }
.workflow-grid { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.workflow-line { position: absolute; top: 25px; right: 11%; left: 11%; height: 1px; background: linear-gradient(90deg, transparent, rgba(111, 214, 190, 0.42) 18%, rgba(111, 214, 190, 0.42) 82%, transparent); }
.workflow-step { position: relative; }
.step-number { display: grid; place-items: center; width: 51px; height: 51px; border: 1px solid rgba(96, 231, 195, 0.57); border-radius: 50%; color: var(--mint); background: #0d191d; box-shadow: 0 0 0 9px rgba(38, 110, 94, 0.09); font: 11px/1 "Segoe UI", sans-serif; }
.workflow-step h3 { margin: 29px 0 9px; color: #d9e5e2; font-size: 16px; font-weight: 600; }
.workflow-step p { max-width: 190px; margin: 0; color: var(--muted); font-size: 11px; line-height: 1.8; }
.workflow-note { display: flex; align-items: center; gap: 10px; max-width: 535px; margin-top: 63px; padding: 13px 17px; border: 1px solid rgba(245, 188, 118, 0.18); border-radius: 8px; color: #a89075; background: rgba(84, 57, 30, 0.12); font-size: 11px; }
.note-icon { display: grid; place-items: center; width: 17px; height: 17px; flex: none; border: 1px solid rgba(245, 188, 118, 0.58); border-radius: 50%; color: var(--amber); font: 11px/1 Georgia, serif; }

.download-section { padding-top: 2px; padding-bottom: 127px; }
.download-card { position: relative; display: flex; align-items: center; justify-content: space-between; min-height: 305px; overflow: hidden; padding: 54px 68px; border: 1px solid rgba(105, 229, 195, 0.3); border-radius: var(--radius-large); background: radial-gradient(circle at 80% 40%, rgba(51, 207, 172, 0.18), transparent 29%), linear-gradient(110deg, rgba(18, 48, 48, 0.82), rgba(13, 29, 34, 0.8) 55%, rgba(17, 47, 49, 0.6)); box-shadow: 0 20px 70px rgba(31, 169, 137, 0.08); }
.download-card::before { position: absolute; top: -170px; right: 115px; width: 370px; height: 370px; border: 1px solid rgba(108, 230, 198, 0.16); border-radius: 50%; content: ""; box-shadow: 0 0 0 28px rgba(108, 230, 198, 0.035), 0 0 0 66px rgba(108, 230, 198, 0.025); }
.download-card::after { position: absolute; right: 0; bottom: -1px; width: 50%; height: 1px; content: ""; background: linear-gradient(90deg, transparent, var(--mint)); }
.download-scanline { position: absolute; top: 0; bottom: 0; left: 50%; width: 1px; opacity: 0.45; background: linear-gradient(transparent, var(--mint), transparent); }
.download-copy { position: relative; z-index: 1; }
.download-copy h2 { margin: 17px 0 14px; color: var(--ink); font-size: clamp(30px, 3.4vw, 43px); font-weight: 600; letter-spacing: -0.07em; line-height: 1.2; }
.download-copy h2 em { color: transparent; background: linear-gradient(100deg, #8deed0, #afc5ff); background-clip: text; -webkit-background-clip: text; }
.download-copy p { margin: 0; color: var(--muted); font-size: 12px; }
.download-meta { display: flex; flex-wrap: wrap; gap: 20px; margin-top: 28px; color: #789391; font-size: 10px; }
.download-meta span { display: inline-flex; align-items: center; gap: 7px; }
.download-meta i { width: 4px; height: 4px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 6px var(--mint); }
.download-action { position: relative; z-index: 1; display: flex; min-width: 245px; flex-direction: column; align-items: center; }
.download-orbit { position: absolute; top: -87px; left: 50%; width: 180px; height: 180px; pointer-events: none; border: 1px solid rgba(117, 231, 201, 0.15); border-radius: 50%; transform: translateX(-50%) rotate(-27deg); }
.download-orbit::before { position: absolute; inset: 18px; border: 1px dashed rgba(117, 231, 201, 0.2); border-radius: 50%; content: ""; }
.download-orbit span { position: absolute; top: 19px; left: 22px; width: 5px; height: 5px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 11px var(--mint); }
.download-orbit i { position: absolute; right: 23px; bottom: 30px; width: 4px; height: 4px; border-radius: 50%; background: var(--violet); box-shadow: 0 0 10px var(--violet); }
.button--download { min-width: 230px; min-height: 54px; }
.download-status { min-height: 21px; margin: 13px 0 0; color: #75928f; font-size: 10px; text-align: center; }

.site-footer { border-top: 1px solid var(--line); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; min-height: 89px; gap: 20px; color: #607578; font-size: 10px; }
.footer-brand { color: #a0b5b2; font-size: 11px; }
.footer-mark { width: 23px; height: 23px; border-radius: 7px; }
.footer-mark img { width: 18px; height: 18px; }
.footer-inner p { margin: 0; }

/* 只有脚本可用时才启用初始隐藏，禁用脚本时页面内容保持直接可读。 */
html.js-enabled [data-reveal] { opacity: 0; transform: translateY(19px); transition: opacity 700ms ease, transform 700ms cubic-bezier(0.2, 0.75, 0.25, 1); }
html.js-enabled [data-reveal].is-visible { opacity: 1; transform: translateY(0); }
[data-reveal-delay="100"] { transition-delay: 100ms; }
[data-reveal-delay="120"] { transition-delay: 120ms; }
[data-reveal-delay="200"] { transition-delay: 200ms; }
[data-reveal-delay="300"] { transition-delay: 300ms; }

@keyframes map-scan { 0%, 20% { transform: translateX(-100%); opacity: 0; } 40%, 68% { transform: translateX(100%); opacity: 1; } 80%, 100% { transform: translateX(100%); opacity: 0; } }
@keyframes pulse { 0% { opacity: 0.8; transform: scale(0.65); } 70%, 100% { opacity: 0; transform: scale(1.35); } }

@media (max-width: 960px) {
  .container { width: min(calc(100% - 40px), var(--content-width)); }
  .hero { grid-template-columns: 1fr; gap: 35px; padding-top: 75px; }
  .hero-copy { padding-bottom: 0; }
  .hero-description { max-width: 580px; }
  .hero-visual { max-width: 720px; padding-left: 0; }
  .section { padding-top: 100px; }
  .section-heading { align-items: flex-start; flex-direction: column; gap: 24px; }
  .section-heading > p { max-width: 520px; }
  .workflow-section { margin-top: 100px; }
  .download-card { padding: 47px; }
}

@media (max-width: 720px) {
  .container { width: min(calc(100% - 32px), var(--content-width)); }
  .header-inner { min-height: 67px; }
  .main-nav { display: none; }
  .button--nav { min-height: 35px; padding-inline: 12px; font-size: 11px; }
  .brand-mark { width: 29px; height: 29px; }
  .hero { min-height: auto; gap: 32px; padding-top: 58px; padding-bottom: 57px; }
  .hero h1 { margin-top: 18px; font-size: clamp(38px, 12vw, 54px); }
  .hero-description { font-size: 14px; line-height: 1.8; }
  .hero-actions { align-items: stretch; flex-direction: column; max-width: 330px; }
  .button { width: 100%; }
  .hero-visual { padding-top: 9px; }
  .console-shell { transform: none; }
  .console-body { grid-template-columns: 1fr; }
  .map-panel { min-height: 325px; border-right: 0; border-bottom: 1px solid rgba(159, 207, 201, 0.1); }
  .device-panel { min-height: auto; padding: 14px; }
  .device-panel-heading { display: none; }
  .device-status-card { margin-top: 0; }
  .panel-divider, .panel-label--spaced, .coordinate-reading, .mode-switch, .console-action, .panel-footer { display: none; }
  .signal-grid { grid-template-columns: repeat(2, 1fr); min-height: auto; padding-block: 15px; }
  .signal-item { min-height: 39px; padding-right: 12px; border-right: 0; font-size: 11px; }
  .signal-item:not(:first-child) { padding-left: 12px; }
  .signal-item:nth-child(odd) { border-right: 1px solid var(--line); }
  .signal-item:nth-child(-n + 2) { border-bottom: 1px solid var(--line); }
  .signal-decoration { display: none; }
  .section { padding-top: 84px; }
  .section-heading { margin-bottom: 32px; }
  .section-heading h2 { font-size: 35px; }
  .feature-grid { grid-template-columns: 1fr; gap: 12px; }
  .feature-card { min-height: 325px; }
  .feature-icon { margin-top: 32px; }
  .workflow-section { margin-top: 84px; padding-bottom: 84px; }
  .workflow-section::before { display: none; }
  .workflow-grid { grid-template-columns: 1fr; gap: 28px; padding-left: 8px; }
  .workflow-line { top: 25px; right: auto; bottom: 26px; left: 33px; width: 1px; height: auto; background: linear-gradient(transparent, rgba(111, 214, 190, 0.42), transparent); }
  .workflow-step { display: grid; grid-template-columns: 51px 1fr; column-gap: 19px; align-items: center; }
  .workflow-step h3 { margin: 0 0 4px; }
  .workflow-step p { grid-column: 2; }
  .workflow-note { align-items: flex-start; margin-top: 40px; font-size: 10px; }
  .download-section { padding-bottom: 84px; }
  .download-card { align-items: flex-start; flex-direction: column; gap: 52px; padding: 40px 25px 34px; }
  .download-scanline { display: none; }
  .download-copy h2 { font-size: 35px; }
  .download-meta { gap: 12px; }
  .download-action { width: 100%; min-width: 0; align-items: stretch; }
  .download-orbit { top: -75px; right: -30px; left: auto; width: 150px; height: 150px; transform: rotate(-27deg); }
  .button--download { width: 100%; }
  .site-footer { padding-block: 23px; }
  .footer-inner { align-items: flex-start; flex-direction: column; min-height: auto; gap: 11px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  html.js-enabled [data-reveal] { opacity: 1; transform: none; }
}