:root {
  --bg: #0a0a0a;
  --bg2: #141414;
  --line: #262626;
  --text: #f5f5f0;
  --mute: #8a8a85;
  --acid: #d4ff3a;
  --pad: 22px;
  --num: "DIN Alternate", "Bahnschrift", "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  background: var(--bg); color: var(--text);
  font: 15px/1.6 -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}
img, video { display: block; width: 100%; height: 100%; object-fit: cover; }
ol, ul { list-style: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
em { font-style: normal; color: var(--acid); }
h1, h2, h3 { font-weight: 900; letter-spacing: -0.02em; line-height: 1.12; }

.sample-bar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 50;
  padding: 6px calc(var(--pad) + env(safe-area-inset-right)) calc(6px + env(safe-area-inset-bottom));
  background: #ff3b30; color: #fff; font-size: 12px; text-align: center;
}

/* 顶部 */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between;
  padding: calc(14px + env(safe-area-inset-top)) var(--pad) 14px;
  background: rgba(10, 10, 10, 0.92);
  border-bottom: 1px solid var(--line);
}
.logo { font-weight: 900; font-size: 17px; letter-spacing: 0.04em; }
.logo span { margin-left: 8px; font: 700 10px var(--num); letter-spacing: 0.2em; color: var(--mute); }
.nav-cta {
  padding: 7px 14px; border-radius: 99px; background: var(--acid); color: #000;
  font-size: 13px; font-weight: 700; text-decoration: none;
}

/* 首屏 */
.hero { position: relative; min-height: 100svh; display: flex; align-items: flex-end; overflow: hidden; }
.hero-media { position: absolute; inset: 0; }
.hero-media::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(rgba(10, 10, 10, 0.3) 30%, var(--bg) 92%);
}
.hero-body { position: relative; width: 100%; padding: 110px var(--pad) 36px; }
.kicker { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--mute); letter-spacing: 0.1em; }
.live-dot { width: 8px; height: 8px; border-radius: 50%; background: #ff2d55; animation: blink 1.4s infinite; }
@keyframes blink { 50% { opacity: 0.25; } }
.hero h1 { margin: 14px 0 16px; font-size: clamp(46px, 13vw, 96px); }
.lead { max-width: 30em; color: #c9c9c4; }
.stats { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 10px; margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--line); }
.stat strong { font: 700 clamp(30px, 9vw, 64px)/1 var(--num); color: var(--acid); letter-spacing: -0.03em; }
.stat .suf { font: 700 clamp(13px, 3.6vw, 22px) var(--num); color: var(--acid); }
.stat p { margin-top: 6px; font-size: 12px; color: var(--mute); line-height: 1.4; }

/* 行业滚动条 */
.ticker { overflow: hidden; padding: 14px 0; border-block: 1px solid var(--line); background: var(--acid); color: #000; }
.ticker-track { display: flex; width: max-content; animation: scroll 28s linear infinite; }
.ticker span { padding: 0 18px; font-size: 15px; font-weight: 900; white-space: nowrap; }
.ticker span::after { content: "✦"; margin-left: 36px; }
@keyframes scroll { to { transform: translateX(-50%); } }

/* 通用段落 */
section:not(.hero) { padding: 80px var(--pad); }
.sec-head { margin-bottom: 32px; }
.sec-no { font: 700 12px var(--num); letter-spacing: 0.16em; color: var(--mute); margin-bottom: 14px; }
.sec-note { margin-top: 14px; font-size: 13px; color: var(--mute); }
.sec-head h2, .contact h2 { font-size: clamp(34px, 9.6vw, 64px); }
.media-ph {
  display: grid; place-items: center; width: 100%; height: 100%; min-height: 220px;
  background: repeating-linear-gradient(135deg, #151515 0 14px, #1b1b1b 14px 28px);
  color: #555; font-size: 13px;
}

/* 战绩墙：TOP10 和近期案例，每家方块样式一样 */
.wall-list { display: grid; grid-template-columns: 1fr 1fr; grid-auto-rows: 1fr; gap: 10px; }
.tile {
  display: flex; flex-direction: column; justify-content: space-between; gap: 18px;
  min-height: 156px; padding: 16px; border: 1px solid var(--line); border-radius: 14px; background: var(--bg2);
}
.t-top { display: flex; align-items: center; justify-content: space-between; gap: 6px; min-height: 18px; }
.t-badge { flex: none; padding: 1px 7px; border-radius: 99px; background: var(--acid); color: #000; font-size: 10px; font-weight: 900; }
.t-ind { font-size: 11px; color: var(--mute); }
.t-num { font: 700 clamp(46px, 14vw, 72px)/0.85 var(--num); color: var(--acid); letter-spacing: -0.05em; }
.t-num small { margin-left: 3px; font-size: 0.3em; letter-spacing: 0; }
.tile h3 { font-size: 15px; line-height: 1.3; }
.t-round { display: block; margin-top: 2px; font-size: 12px; font-weight: 500; color: var(--mute); }

.sub-head {
  display: flex; align-items: center; gap: 12px; margin: 48px 0 16px;
  font-size: 20px; font-weight: 900;
}
.sub-head::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.wall-sm .tile { min-height: 118px; gap: 12px; padding: 14px; }
.wall-sm .t-num { font-size: clamp(34px, 10vw, 48px); }
.wall-sm h3 { font-size: 14px; }

/* 服务城市：斜 45 度的立体中国版图 */
.cities { overflow: hidden; }
.map-stage { position: relative; height: 270px; margin: -30px calc(var(--pad) * -1) -40px; perspective: 1100px; }
.map-stage::after {
  content: ""; position: absolute; inset: auto 0 0; height: 30%;
  background: linear-gradient(rgba(10, 10, 10, 0), var(--bg)); pointer-events: none;
}
.map-plane {
  position: absolute; left: 50%; top: 50%; width: 280px; aspect-ratio: 1000 / 927;
  transform: translate(-50%, -50%) rotateX(52deg) rotateZ(22deg); transform-style: preserve-3d;
}
/* 进场：从正上方俯视转到右侧斜看并放大，之后缓慢左右摆动 */
#mapStage.reveal:not(.in) .map-plane { transform: translate(-50%, -50%) rotateX(8deg) rotateZ(0deg) scale(0.8); }
#mapStage.in .map-plane {
  animation: map-in 1.4s cubic-bezier(0.3, 0.8, 0.2, 1) both, map-sway 9s ease-in-out 1.4s infinite alternate;
}
@keyframes map-in {
  from { transform: translate(-50%, -50%) rotateX(8deg) rotateZ(0deg) scale(0.8); }
  to { transform: translate(-50%, -50%) rotateX(52deg) rotateZ(22deg) scale(1); }
}
@keyframes map-sway {
  from { transform: translate(-50%, -50%) rotateX(52deg) rotateZ(22deg); }
  to { transform: translate(-50%, -50%) rotateX(46deg) rotateZ(12deg); }
}
.map-floor {
  position: absolute; inset: -14%;
  background-image:
    linear-gradient(rgba(212, 255, 58, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212, 255, 58, 0.12) 1px, transparent 1px);
  background-size: 24px 24px;
  -webkit-mask-image: radial-gradient(closest-side, #000 40%, transparent);
  mask-image: radial-gradient(closest-side, #000 40%, transparent);
  transform: translateZ(-20px);
}
.map-layer { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; }
.map-depth:nth-of-type(1) { transform: translateZ(-16px); filter: drop-shadow(0 16px 16px rgba(0, 0, 0, 0.85)); }
.map-depth:nth-of-type(2) { transform: translateZ(-12px); }
.map-depth:nth-of-type(3) { transform: translateZ(-8px); }
.map-depth:nth-of-type(4) { transform: translateZ(-4px); }
.map-face { filter: drop-shadow(0 0 6px rgba(212, 255, 58, 0.25)); }

/* 郑州到各城市的弧线：进入屏幕后从郑州一条条画出去 */
.map-lines { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; transform: translateZ(1px); }
.map-lines path {
  fill: none; stroke: var(--acid); stroke-width: 3; stroke-opacity: 0.5; stroke-linecap: round;
  stroke-dasharray: 1; stroke-dashoffset: 0;
  transition: stroke-dashoffset var(--t) cubic-bezier(0.4, 0, 0.2, 1) var(--d);
}
#mapStage.reveal:not(.in) .map-lines path { stroke-dashoffset: 1; }

/* 城市光点：线到了再亮，外圈持续脉冲 */
.map-dots { position: absolute; inset: 0; transform: translateZ(1.5px); }
.map-dots .hub {
  width: 12px; height: 12px; margin: -6px 0 0 -6px; background: #fff;
  box-shadow: 0 0 0 3px rgba(212, 255, 58, 0.5), 0 0 16px 4px rgba(212, 255, 58, 0.9);
}
.map-dots i {
  position: absolute; width: 5px; height: 5px; margin: -2.5px 0 0 -2.5px; border-radius: 50%;
  background: var(--acid); box-shadow: 0 0 6px 1px rgba(212, 255, 58, 0.8);
  opacity: 0; transform: scale(0);
  transition: opacity 0.4s var(--d), transform 0.5s cubic-bezier(0.3, 1.6, 0.5, 1) var(--d);
}
.map-dots i::after {
  content: ""; position: absolute; inset: -4px; border: 1px solid var(--acid); border-radius: 50%;
  opacity: 0; animation: ping 2.4s ease-out infinite; animation-delay: var(--d);
}
@keyframes ping { 0% { transform: scale(0.4); opacity: 0.9; } 100% { transform: scale(2.4); opacity: 0; } }
#mapStage.reveal { opacity: 1; transform: none; }
#mapStage.reveal:not(.in) .map-dots i::after { animation: none; }
#mapStage:not(.reveal) .map-dots i, #mapStage.in .map-dots i { opacity: 1; transform: none; }

.coverage { display: grid; grid-template-columns: auto auto; justify-content: start; gap: 0 36px; margin-top: 22px; }
.coverage p { color: var(--acid); }
.coverage b { font: 700 clamp(52px, 15vw, 96px)/0.9 var(--num); letter-spacing: -0.04em; }
.coverage i { font: 700 26px var(--num); font-style: normal; margin-left: 2px; }
.coverage span { display: block; margin-top: 8px; font-size: 15px; font-weight: 700; color: var(--text); }
.city-ticker { overflow: hidden; margin: 8px calc(var(--pad) * -1) 0; padding: 12px 0; border-block: 1px solid var(--line); }
.city-ticker .ticker-track { animation-duration: 120s; }
.city-ticker span { padding: 0 14px; font-size: 14px; color: var(--mute); white-space: nowrap; }

/* 重点案例：直播截图，手机两张一行 */
.feat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px 10px; }
.feat-media {
  position: relative; aspect-ratio: 9 / 16; overflow: hidden; border-radius: 14px;
  background: var(--bg2); border: 1px solid var(--line);
}
.feat-media img { object-position: top; }
.feat-media .media-ph { min-height: 0; }
.feat-tag {
  position: absolute; left: 8px; bottom: 8px; max-width: calc(100% - 16px);
  padding: 3px 8px; border-radius: 99px; background: rgba(0, 0, 0, 0.72); color: var(--acid);
  font-size: 11px; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.feat-body { padding-top: 10px; }
.feat h3 { font-size: 14px; line-height: 1.35; }
.feat-sales { margin-top: 8px; }
.feat-sales span { display: block; font-size: 11px; color: var(--mute); }
.feat-sales b { display: block; margin-top: 2px; font: 700 34px/1 var(--num); color: var(--acid); letter-spacing: -0.03em; }
.feat-extra { display: flex; gap: 14px; margin-top: 8px; padding-top: 8px; border-top: 1px solid var(--line); }
.feat-extra span { display: block; font-size: 11px; color: var(--mute); }
.feat-extra b { font: 700 15px var(--num); }

/* 更多直播现场：只放截图，手机 3 张一行 */
.shot-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.shot-grid li {
  aspect-ratio: 9 / 16; overflow: hidden; border-radius: 10px;
  background: var(--bg2); border: 1px solid var(--line);
}
.shot-grid img { object-position: top; }
.shot-grid .media-ph { min-height: 0; font-size: 11px; }

/* 工作现场：花絮照片墙，一行 5 张 */
.bts-head { margin-top: 56px; }
.bts-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 4px; }
.bts-grid li { aspect-ratio: 1; overflow: hidden; border-radius: 6px; background: var(--bg2); }
.bts-grid img { filter: grayscale(1) contrast(1.05); transition: filter 0.4s, transform 0.6s; }
@media (hover: hover) {
  .bts-grid li:hover img { filter: none; transform: scale(1.06); }
}

/* 我们做什么 */
.flow { background: var(--bg2); }
.steps li { display: flex; gap: 18px; padding: 20px 0; border-top: 1px solid var(--line); }
.steps b { flex: none; width: 34px; font: 700 15px var(--num); color: var(--acid); padding-top: 4px; }
.steps h3 { font-size: 21px; }
.steps p { margin-top: 4px; color: var(--mute); font-size: 14px; }

/* 团队 */
.team-media { aspect-ratio: 4 / 5; overflow: hidden; border-radius: 16px; margin-bottom: 8px; }
.team-media .media-ph { min-height: 0; }
.roles li { padding: 18px 0; border-bottom: 1px solid var(--line); }
.roles h3 { font-size: 21px; }
.roles p { color: var(--mute); font-size: 14px; margin-top: 2px; }
.system { margin-top: 32px; padding: 26px 22px; border-radius: 16px; background: var(--acid); color: #000; }
.system .tag { display: inline-block; padding: 2px 9px; border: 1.5px solid #000; border-radius: 99px; font-size: 12px; font-weight: 700; }
.system h3 { font-size: 34px; line-height: 1.15; margin: 0 0 12px; }
.system p:last-child { font-size: 15px; font-weight: 700; }

/* 联系 */
.contact { text-align: center; padding-bottom: 100px !important; }
.contact > p { margin-top: 14px; color: #c9c9c4; }
.qr {
  display: grid; place-items: center; width: 200px; height: 200px; margin: 30px auto 12px;
  padding: 12px; border-radius: 16px; background: #fff; color: #999; font-size: 13px; line-height: 1.5;
}
.qr img { object-fit: contain; }
.qr-tip { font-size: 12px; color: var(--mute); }
.foot { padding: 28px var(--pad) calc(60px + env(safe-area-inset-bottom)); border-top: 1px solid var(--line); text-align: center; font-size: 12px; color: var(--mute); line-height: 2; }

/* 进场动画 */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s, transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1); }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* 电脑端：内容居中，案例并排 */
@media (min-width: 900px) {
  :root { --pad: max(48px, calc((100vw - 1120px) / 2)); }
  section:not(.hero) { padding-block: 120px; }
  .hero-body { padding-bottom: 64px; }
  .stats { max-width: 720px; }
  .wall-list { grid-template-columns: repeat(5, 1fr); gap: 14px; }
  .tile { min-height: 190px; }
  .t-num { font-size: 72px; }
  .wall-sm { grid-template-columns: repeat(6, 1fr); }
  .wall-sm .tile { min-height: 140px; }
  .wall-sm .t-num { font-size: 44px; }
  .map-stage { height: 560px; margin: -40px 0 -60px; }
  .map-plane { width: 680px; }
  .map-dots i { width: 8px; height: 8px; margin: -4px 0 0 -4px; }
  .city-ticker { margin-inline: 0; }
  .feat-grid { grid-template-columns: repeat(4, 1fr); gap: 28px 20px; }
  .feat h3 { font-size: 17px; }
  .feat-sales b { font-size: 44px; }
  .steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px; }
  .steps li { flex-direction: column; gap: 10px; }
  .team { display: grid; grid-template-columns: 1fr 1fr; column-gap: 56px; align-items: start; }
  .team .sec-head { grid-column: 1 / -1; }
  .team .bts-head, .bts-grid { grid-column: 1 / -1; }
  .bts-grid { gap: 8px; }
  .bts-grid li { border-radius: 10px; }
  .shot-grid { grid-template-columns: repeat(6, 1fr); gap: 14px; }
  .team-media { grid-row: span 2; aspect-ratio: 4 / 5; }
}