/* 耐驰狮 v2 —— 能源控制室：墨黑底、充电绿、等宽数据标注、工程网格 */
:root {
  --ink: #0a0d0c;
  --ink-2: #0f1412;
  --panel: #131a17;
  --panel-2: #18201c;
  --line: rgba(232, 240, 234, .09);
  --line-2: rgba(232, 240, 234, .16);
  --text: #e9eee9;
  --muted: #8e9a93;
  --dim: #5d6862;
  --volt: #c5f24a;          /* 充电绿：唯一强调色 */
  --volt-ink: #10170a;
  --volt-dim: rgba(197, 242, 74, .14);
  --paper: #eef0ea;
  --paper-2: #e3e6de;
  --paper-ink: #121614;
  --paper-muted: #5b645e;
  --todo: #ffd75e;
  --r: 6px;
  --wrap: 1240px;
  --sans: "HarmonyOS Sans SC", "PingFang SC", "MiSans", "Microsoft YaHei", "Source Han Sans SC", system-ui, sans-serif;
  --mono: "JetBrains Mono", "SF Mono", "Cascadia Mono", Consolas, ui-monospace, monospace;
  --num: "Bahnschrift", "DIN Alternate", "DIN Pro", "Roboto Condensed", var(--sans);
  --ease: cubic-bezier(.2, .7, .1, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 72px; }
body { font-family: var(--sans); background: var(--ink); color: var(--text); line-height: 1.7; font-size: 16px; overflow-x: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font: inherit; color: inherit; }
::selection { background: var(--volt); color: var(--volt-ink); }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 32px; }
.mono { font-family: var(--mono); letter-spacing: .02em; }

/* 工程网格背景 */
.grid-bg { position: relative; isolation: isolate; }
.grid-bg::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at 60% 40%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at 60% 40%, #000 30%, transparent 80%);
}

/* 占位 */
.todo {
  display: inline-block; font-size: .82em; line-height: 1.6; padding: 1px 8px; border-radius: 3px;
  color: #3d2f00; background: var(--todo); font-weight: 500;
}
.todo::before { content: "待补充 · "; font-weight: 700; }
.todo.confirm::before { content: "待确认 · "; }

/* ============ Header ============ */
.header { position: fixed; inset: 0 0 auto; z-index: 100; transition: background .3s, border-color .3s, backdrop-filter .3s; border-bottom: 1px solid transparent; }
.header.solid { background: rgba(10, 13, 12, .82); backdrop-filter: blur(14px) saturate(1.3); -webkit-backdrop-filter: blur(14px) saturate(1.3); border-color: var(--line); }
.header .wrap { display: flex; align-items: center; height: 68px; gap: 28px; }
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand img { width: 32px; }
.brand b { font-size: 17px; letter-spacing: .12em; font-weight: 700; }
.brand small { display: block; font-family: var(--mono); font-size: 9.5px; color: var(--muted); letter-spacing: .12em; line-height: 1.2; }
.nav { display: flex; gap: 26px; margin-left: auto; font-size: 14px; color: var(--muted); }
.nav a { position: relative; padding: 4px 0; transition: color .2s; }
.nav a::after { content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 1px; background: var(--volt); transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease); }
.nav a:hover { color: var(--text); }
.nav a:hover::after { transform: scaleX(1); }
.h-cta { display: inline-flex; align-items: center; gap: 8px; font-family: var(--num); font-size: 15px; font-weight: 600; padding: 8px 16px; border-radius: 999px; background: var(--volt); color: var(--volt-ink); white-space: nowrap; transition: transform .2s; }
.h-cta:hover { transform: translateY(-1px); }
.h-cta svg { width: 14px; height: 14px; }
.menu-btn { display: none; margin-left: auto; width: 44px; height: 44px; border: 0; background: none; cursor: pointer; }
.menu-btn span { display: block; width: 22px; height: 1.5px; background: var(--text); margin: 6px auto; transition: .25s var(--ease); }

/* ============ Buttons ============ */
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 24px; border-radius: 999px; font-size: 15px; font-weight: 600; border: 1px solid transparent; transition: transform .2s var(--ease), background .2s, border-color .2s; cursor: pointer; }
.btn svg { width: 16px; height: 16px; transition: transform .25s var(--ease); }
.btn:hover svg { transform: translateX(3px); }
.btn-volt { background: var(--volt); color: var(--volt-ink); }
.btn-volt:hover { transform: translateY(-2px); }
.btn-ghost { border-color: var(--line-2); color: var(--text); }
.btn-ghost:hover { border-color: var(--text); }

/* ============ Hero ============ */
.hero { min-height: min(100vh, 940px); min-height: min(100svh, 940px); padding: 120px 0 0; display: flex; flex-direction: column; }
.hero > .wrap { width: 100%; }
.hero-main { flex: 1; display: grid; grid-template-columns: 1fr 1.08fr; gap: 40px; align-items: center; }
.kicker { display: inline-flex; align-items: center; gap: 10px; font-family: var(--mono); font-size: 12px; color: var(--volt); letter-spacing: .18em; padding: 6px 12px; border: 1px solid var(--volt-dim); border-radius: 999px; margin-bottom: 28px; }
.kicker i { width: 6px; height: 6px; border-radius: 50%; background: var(--volt); animation: blink 1.6s infinite; }
@keyframes blink { 50% { opacity: .25; } }
.hero h1 { font-size: clamp(38px, 5.2vw, 76px); line-height: 1.12; font-weight: 700; letter-spacing: -.01em; }
.hero h1 .hl { color: var(--volt); }
.hero h1 .line { display: block; overflow: hidden; }
.hero h1 .line > span { display: inline-block; transform: translateY(105%); animation: rise 1s var(--ease) forwards; }
.hero h1 .line:nth-child(2) > span { animation-delay: .1s; }
.hero h1 .line:nth-child(3) > span { animation-delay: .2s; }
@keyframes rise { to { transform: none; } }
.hero .lead { color: var(--muted); font-size: 17px; max-width: 30em; margin: 28px 0 36px; opacity: 0; animation: fade .9s .45s var(--ease) forwards; }
.hero .btns { display: flex; gap: 12px; flex-wrap: wrap; opacity: 0; animation: fade .9s .6s var(--ease) forwards; }
@keyframes fade { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

/* 子母桩功率分配示意 */
.sim { position: relative; opacity: 0; animation: fade 1.2s .3s var(--ease) forwards; }
.sim svg { width: 100%; height: auto; overflow: visible; }
.sim .tag { position: absolute; font-family: var(--mono); font-size: 11px; color: var(--dim); letter-spacing: .1em; }
.sim .tag.tl { top: -6px; left: 0; }
.sim .tag.br { bottom: -18px; right: 0; }
.sim-total { font-family: var(--num); }
.cable { fill: none; stroke: var(--line-2); stroke-width: 2; }
.flow { fill: none; stroke: var(--volt); stroke-width: 2; stroke-dasharray: 4 12; stroke-linecap: round; animation: flow 1s linear infinite; opacity: 0; transition: opacity .5s; }
.flow.on { opacity: 1; }
.flow.input { opacity: 1; animation-duration: .7s; }
@keyframes flow { to { stroke-dashoffset: -32; } }
.bay { fill: none; stroke: var(--line-2); stroke-dasharray: 5 5; }
.bay-no { font-family: var(--mono); font-size: 10px; fill: var(--dim); letter-spacing: .1em; }
.car { transition: transform 1.2s var(--ease), opacity .8s; }
.car.away { transform: translateY(150px); opacity: 0; }
.car-body { fill: #222b27; stroke: #36423c; }
.car-glass { fill: #0d1210; }
.soc-bar-bg { fill: #0d1210; }
.soc-bar { fill: var(--volt); transition: width .8s linear; }
.kw { font-family: var(--num); font-size: 17px; font-weight: 600; fill: var(--text); transition: fill .3s; }
.kw.idle { fill: var(--dim); }
.kw-unit { font-family: var(--mono); font-size: 9px; fill: var(--muted); }
.soc-t { font-family: var(--mono); font-size: 11px; fill: var(--text); }
.term-body { fill: #d9ddd6; }
.term-screen { fill: #0d1210; }
.term-led { fill: var(--dim); transition: fill .3s; }
.term-led.on { fill: var(--volt); }
.host-body { fill: #e3e6df; }
.host-vent { stroke: #b9beb6; stroke-width: 1.4; }
.lbl { font-family: var(--mono); font-size: 10.5px; fill: var(--muted); letter-spacing: .08em; }
.lbl-b { font-family: var(--num); font-size: 22px; font-weight: 600; fill: var(--text); }

.hero-strip { border-top: 1px solid var(--line); margin-top: 56px; }
.hero-strip ul { display: grid; grid-template-columns: repeat(6, 1fr); }
.hero-strip li { padding: 22px 18px 26px 0; border-right: 1px solid var(--line); }
.hero-strip li + li { padding-left: 18px; }
.hero-strip li:last-child { border-right: 0; }
.hero-strip b { display: block; font-family: var(--num); font-size: clamp(24px, 2.4vw, 34px); font-weight: 600; line-height: 1.15; }
.hero-strip b small { font-size: .5em; color: var(--muted); margin-left: 2px; font-weight: 500; }
.hero-strip li > span { font-size: 12.5px; color: var(--muted); }

/* ============ Marquee ============ */
.marquee { border-block: 1px solid var(--line); overflow: hidden; background: var(--ink-2); }
.marquee-track { display: flex; width: max-content; animation: marq 40s linear infinite; }
.marquee-track span { display: inline-flex; align-items: center; gap: 22px; padding: 18px 22px; font-size: 15px; color: var(--muted); white-space: nowrap; }
.marquee-track span::after { content: ""; width: 7px; height: 7px; background: var(--volt); transform: rotate(45deg); }
@keyframes marq { to { transform: translateX(-50%); } }

/* ============ Section 通用 ============ */
section { padding: 128px 0; position: relative; }
.s-head { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: end; margin-bottom: 64px; }
.s-no { display: flex; align-items: center; gap: 12px; font-family: var(--mono); font-size: 12px; letter-spacing: .2em; color: var(--volt); margin-bottom: 18px; }
.s-no::before { content: ""; width: 28px; height: 1px; background: currentColor; }
.s-head h2 { font-size: clamp(30px, 3.6vw, 52px); line-height: 1.18; font-weight: 700; letter-spacing: -.01em; }
.s-head > p { color: var(--muted); font-size: 16px; max-width: 32em; justify-self: end; }

.light { background: var(--paper); color: var(--paper-ink); }
.light .s-head > p, .light .muted { color: var(--paper-muted); }
.light .s-no { color: #4b7a00; }

/* 滚动渐显 */
.rv { opacity: 0; transform: translateY(28px); transition: opacity .9s var(--ease), transform .9s var(--ease); transition-delay: var(--d, 0s); }
.rv.in { opacity: 1; transform: none; }

/* ============ About ============ */
.about-top { display: grid; grid-template-columns: 1.25fr 1fr; gap: 56px; align-items: stretch; }
.about-photo { position: relative; border-radius: var(--r); overflow: hidden; min-height: 420px; }
.about-photo::after { content: ""; position: absolute; inset: 0; background: var(--volt); transform-origin: top; transition: transform 1.3s var(--ease); }
.about-photo.in::after { transform: scaleY(0); }
.about-photo img { position: absolute; inset: -8% 0; width: 100%; height: 116%; object-fit: cover; will-change: transform; }
.about-photo figcaption { z-index: 1; position: absolute; left: 16px; bottom: 14px; font-family: var(--mono); font-size: 11px; letter-spacing: .14em; color: #fff; background: rgba(0, 0, 0, .45); padding: 4px 10px; border-radius: 3px; }
.about-text p { color: var(--muted); margin-bottom: 1.1em; text-align: justify; }
.about-text p:first-child { color: var(--text); font-size: 19px; line-height: 1.7; }
.about-text .sign { margin-top: 28px; font-size: 26px; font-weight: 700; letter-spacing: .4em; }
.about-text .sign small { display: block; font-family: var(--mono); font-size: 11px; letter-spacing: .2em; color: var(--dim); font-weight: 400; margin-top: 4px; }

.mvv { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; margin-top: 72px; }
.mvv > div { background: var(--ink); padding: 32px 28px 36px; transition: background .3s; }
.mvv > div:hover { background: var(--panel); }
.mvv .k { font-family: var(--mono); font-size: 11px; color: var(--volt); letter-spacing: .2em; }
.mvv h3 { font-size: 20px; margin: 12px 0 8px; }
.mvv p { color: var(--muted); font-size: 15px; }

.biz-row { margin-top: 72px; }
.biz-row h3 { font-size: 15px; color: var(--muted); font-weight: 500; margin-bottom: 18px; }
.biz { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.biz li { position: relative; border: 1px solid var(--line); border-radius: var(--r); padding: 22px 20px 24px; overflow: hidden; transition: border-color .3s, transform .3s var(--ease); }
.biz li:hover { border-color: var(--volt); transform: translateY(-4px); }
.biz li::after { content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: 100%; background: var(--volt); transform: scaleX(0); transform-origin: left; transition: transform .5s var(--ease); }
.biz li:hover::after { transform: scaleX(1); }
.biz .n { font-family: var(--mono); font-size: 11px; color: var(--dim); }
.biz b { display: block; font-size: 17px; margin-top: 26px; }

.chain { margin-top: 56px; position: relative; display: grid; grid-template-columns: repeat(6, 1fr); }
.chain::before { content: ""; position: absolute; left: 0; right: 0; top: 7px; height: 1px; background: var(--line-2); }
.chain::after { content: ""; position: absolute; left: 0; top: 7px; height: 1px; width: 100%; background: var(--volt); transform: scaleX(0); transform-origin: left; transition: transform 2.2s var(--ease); }
.chain.in::after { transform: scaleX(1); }
.chain li { position: relative; padding-top: 30px; }
.chain li::before { content: ""; position: absolute; top: 2px; left: 0; width: 11px; height: 11px; border-radius: 50%; background: var(--ink); border: 1.5px solid var(--line-2); transition: border-color .3s, background .3s; transition-delay: calc(var(--i) * .3s + .2s); }
.chain.in li::before { border-color: var(--volt); background: var(--volt); }
.chain small { font-family: var(--mono); font-size: 11px; color: var(--dim); letter-spacing: .12em; }
.chain b { display: block; font-size: 17px; font-weight: 600; margin-top: 2px; }

/* ============ Flagship 子母桩 ============ */
.flag { background: var(--ink-2); border-block: 1px solid var(--line); }
.flag-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 64px; align-items: start; }
.stage { position: sticky; top: 100px; border-radius: 10px; background: linear-gradient(180deg, #f3f5ef 0%, #e2e6dd 80%, #cdd2c7 80.4%, #c6cbc0 100%); padding: 56px 32px 0; overflow: hidden; }
.stage-pics { display: flex; justify-content: center; align-items: flex-end; gap: 4%; }
.stage-pics img { mix-blend-mode: multiply; }
.stage-pics .host { width: 55%; }
.stage-pics .term { width: 40%; }
.hot { position: absolute; z-index: 2; display: flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 11px; color: var(--paper-ink); letter-spacing: .06em; }
.hot i { width: 10px; height: 10px; border-radius: 50%; background: var(--paper-ink); box-shadow: 0 0 0 0 rgba(18, 22, 20, .4); animation: ping 2s infinite; }
@keyframes ping { 70% { box-shadow: 0 0 0 10px rgba(18, 22, 20, 0); } 100% { box-shadow: 0 0 0 0 rgba(18, 22, 20, 0); } }
.hot.h1 { left: 9%; top: 18px; }
.hot.h2 { right: 7%; top: 18px; }
.stage-cap { display: flex; justify-content: space-between; color: var(--paper-muted); font-family: var(--mono); font-size: 11px; padding: 14px 0 16px; letter-spacing: .08em; }

.flag h3 { font-size: clamp(26px, 2.6vw, 36px); line-height: 1.3; }
.flag .fmodel { font-family: var(--mono); font-size: 13px; color: var(--muted); margin: 10px 0 32px; }
.toggle { display: inline-flex; padding: 4px; border: 1px solid var(--line-2); border-radius: 999px; margin-bottom: 28px; }
.toggle button { border: 0; background: none; padding: 8px 20px; border-radius: 999px; font-family: var(--num); font-size: 15px; font-weight: 600; cursor: pointer; color: var(--muted); transition: background .25s, color .25s; }
.toggle button[aria-pressed="true"] { background: var(--volt); color: var(--volt-ink); }
.big-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; margin-bottom: 36px; }
.big-metrics div { background: var(--ink-2); padding: 18px 18px 20px; }
.big-metrics b { display: block; font-family: var(--num); font-size: 34px; font-weight: 600; line-height: 1.1; }
.big-metrics b small { font-size: 14px; color: var(--muted); margin-left: 3px; font-weight: 500; }
.big-metrics div > span { font-size: 12.5px; color: var(--muted); }
.feats { display: grid; grid-template-columns: 1fr 1fr; gap: 28px 32px; margin-bottom: 40px; }
.feats li { display: grid; grid-template-columns: 40px 1fr; gap: 14px; }
.ico { width: 40px; height: 40px; border-radius: 8px; border: 1px solid var(--line-2); display: grid; place-items: center; color: var(--volt); }
.ico svg { width: 20px; height: 20px; }
.feats b { display: block; font-size: 16px; margin-bottom: 4px; }
.feats p { color: var(--muted); font-size: 14px; line-height: 1.7; }

.spec { width: 100%; border-collapse: collapse; font-size: 14px; }
.spec caption { text-align: left; font-family: var(--mono); font-size: 12px; letter-spacing: .16em; color: var(--muted); padding-bottom: 12px; }
.spec th, .spec td { text-align: left; padding: 11px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.spec th { color: var(--muted); font-weight: 400; width: 32%; padding-right: 12px; }
.spec td { font-family: var(--num); }
.spec td .swap { display: inline-block; transition: opacity .25s, transform .25s; }
.spec td .swap.out { opacity: 0; transform: translateY(-6px); }

.package { margin-top: 40px; border-radius: 10px; border: 1px solid var(--volt-dim); background: linear-gradient(160deg, rgba(197, 242, 74, .07), rgba(197, 242, 74, 0) 55%), var(--panel); padding: 28px 28px 26px; }
.package h4 { font-size: 18px; margin-bottom: 14px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.package h4 .mono { font-size: 11px; color: var(--volt); letter-spacing: .16em; font-weight: 400; }
.package .price { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; padding-bottom: 18px; margin-bottom: 16px; border-bottom: 1px solid var(--line); }
.package .price b { font-family: var(--num); font-size: 48px; line-height: 1; font-weight: 600; color: var(--volt); }
.package .price span { color: var(--muted); font-size: 15px; }
.package .price em { font-style: normal; margin-left: auto; font-size: 13px; padding: 4px 12px; border-radius: 999px; border: 1px solid var(--line-2); }
.package dl { display: grid; grid-template-columns: 6.5em 1fr; gap: 10px 14px; font-size: 14px; }
.package dt { color: var(--muted); }
.package dd { color: #c9d1cb; }
.package .btn { margin-top: 22px; }

/* ============ Products ============ */
.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 36px; }
.tabs button { border: 1px solid rgba(18, 22, 20, .15); background: transparent; padding: 9px 18px; border-radius: 999px; font-size: 14px; cursor: pointer; color: var(--paper-muted); transition: .2s; }
.tabs button:hover { border-color: var(--paper-ink); color: var(--paper-ink); }
.tabs button[aria-pressed="true"] { background: var(--paper-ink); border-color: var(--paper-ink); color: var(--paper); }
.tabs button sup { font-family: var(--mono); font-size: 10px; margin-left: 4px; opacity: .6; }
.products { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.card { background: #fff; border-radius: 8px; overflow: hidden; display: flex; flex-direction: column; transition: transform .35s var(--ease), box-shadow .35s var(--ease); position: relative; }
.card:hover { transform: translateY(-6px); box-shadow: 0 18px 40px -18px rgba(18, 22, 20, .35); }
.card[hidden] { display: none; }
.card.pop { animation: pop .5s var(--ease) both; }
@keyframes pop { from { opacity: 0; transform: translateY(16px) scale(.98); } }
.card .pic { aspect-ratio: 1 / 1; display: grid; place-items: center; padding: 22px; background: #fff; overflow: hidden; }
.card .pic img { max-height: 100%; width: auto; object-fit: contain; mix-blend-mode: multiply; transition: transform .6s var(--ease); }
.card:hover .pic img { transform: scale(1.06); }
.card .body { padding: 16px 18px 20px; border-top: 1px solid #eceee8; flex: 1; display: flex; flex-direction: column; }
.card .tag { font-family: var(--mono); font-size: 10.5px; color: #4b7a00; letter-spacing: .1em; }
.card h3 { font-size: 15.5px; line-height: 1.45; margin: 4px 0 2px; font-weight: 600; }
.card .pw { font-family: var(--num); font-size: 26px; font-weight: 600; margin: 4px 0 12px; }
.card ul { margin-top: auto; font-size: 13px; color: var(--paper-muted); line-height: 1.85; }
.card ul li { padding-left: 14px; position: relative; }
.card ul li::before { content: ""; position: absolute; left: 0; top: .8em; width: 6px; height: 1px; background: currentColor; }

/* ============ Scenes ============ */
.scene-wrap { display: grid; grid-template-columns: 300px 1fr; gap: 40px; }
.scene-tabs { display: flex; flex-direction: column; border-top: 1px solid var(--line); }
.scene-tabs button { text-align: left; background: none; border: 0; border-bottom: 1px solid var(--line); padding: 22px 0; cursor: pointer; color: var(--muted); position: relative; transition: color .25s; }
.scene-tabs button .mono { display: block; font-size: 11px; letter-spacing: .14em; color: var(--dim); margin-bottom: 2px; }
.scene-tabs button b { font-size: 20px; font-weight: 600; }
.scene-tabs button small { display: block; font-size: 12.5px; margin-top: 2px; color: var(--dim); }
.scene-tabs button::after { content: ""; position: absolute; left: 0; bottom: -1px; height: 2px; width: 100%; background: var(--volt); transform: scaleX(0); transform-origin: left; }
.scene-tabs button[aria-selected="true"] { color: var(--text); }
.scene-tabs button[aria-selected="true"] .mono { color: var(--volt); }
.scene-tabs button[aria-selected="true"]::after { transform: scaleX(1); transition: transform 7s linear; }
.scene-tabs.paused button[aria-selected="true"]::after { transition: none; }
.scene-panel { display: none; grid-template-columns: 1.15fr 1fr; gap: 0; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: var(--panel); min-height: 480px; }
.scene-panel.on { display: grid; animation: fade .7s var(--ease); }
.scene-panel .pic { position: relative; overflow: hidden; }
.scene-panel .pic img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; animation: kb 9s ease-out both; }
@keyframes kb { from { transform: scale(1.12); } to { transform: scale(1); } }
.scene-panel .pic .badge { position: absolute; left: 16px; top: 16px; background: var(--volt); color: var(--volt-ink); font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 3px; }
.scene-panel .body { padding: 32px 30px; }
.scene-panel h3 { font-size: 24px; }
.scene-panel .sub { color: var(--muted); font-size: 13px; margin-top: 2px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 18px 0 22px; }
.chips span { font-size: 12.5px; padding: 3px 12px; border-radius: 999px; border: 1px solid var(--volt-dim); color: var(--volt); }
.scene-panel h4 { font-family: var(--mono); font-size: 11px; color: var(--dim); letter-spacing: .16em; font-weight: 400; margin: 18px 0 8px; }
.scene-panel li { font-size: 14px; color: #c9d1cb; padding: 7px 0 7px 18px; position: relative; border-bottom: 1px dashed var(--line); }
.scene-panel li::before { content: ""; position: absolute; left: 0; top: 15px; width: 7px; height: 7px; border: 1.5px solid var(--volt); border-radius: 50%; }

/* ============ Cooperation ============ */
.coop { background: var(--ink-2); border-block: 1px solid var(--line); }
.models { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.model { border: 1px solid var(--line); border-radius: 10px; padding: 26px 22px 24px; background: var(--ink); display: flex; flex-direction: column; transition: border-color .3s, transform .3s var(--ease); }
.model:hover { border-color: var(--line-2); transform: translateY(-4px); }
.model .n { font-family: var(--mono); font-size: 11px; color: var(--volt); letter-spacing: .16em; }
.model h3 { font-size: 22px; margin: 10px 0 8px; }
.model > p { color: var(--muted); font-size: 14px; min-height: 4.8em; }
.duo { margin-top: 22px; display: grid; grid-template-columns: 1fr; gap: 0; position: relative; }
.party { border: 1px solid var(--line-2); border-radius: 6px; padding: 12px 14px; font-size: 13px; color: #c9d1cb; }
.party b { display: block; font-size: 13px; color: var(--text); margin-bottom: 4px; font-weight: 600; }
.party.op { border-color: var(--volt-dim); background: rgba(197, 242, 74, .04); }
.party.op b { color: var(--volt); }
.link { height: 30px; position: relative; }
.link::before { content: ""; position: absolute; left: 50%; top: 0; bottom: 0; border-left: 1.5px dashed var(--line-2); }
.link::after { content: ""; position: absolute; left: calc(50% - 3px); width: 7px; height: 7px; border-radius: 50%; background: var(--volt); animation: travel 2.4s var(--ease) infinite; }
@keyframes travel { 0% { top: 0; opacity: 0; } 20% { opacity: 1; } 80% { opacity: 1; } 100% { top: calc(100% - 7px); opacity: 0; } }

.join { margin-top: 72px; display: grid; grid-template-columns: 1fr 1.6fr; gap: 48px; align-items: center; padding: 40px; border-radius: 12px; background: var(--volt); color: var(--volt-ink); position: relative; overflow: hidden; }
.join::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(16, 23, 10, .08) 1px, transparent 1px), linear-gradient(90deg, rgba(16, 23, 10, .08) 1px, transparent 1px); background-size: 32px 32px; pointer-events: none; }
.join > * { position: relative; }
.join h3 { font-size: clamp(24px, 2.4vw, 34px); line-height: 1.25; }
.join p { margin-top: 10px; font-size: 14.5px; opacity: .8; }
.join .btn { margin-top: 22px; background: var(--volt-ink); color: var(--volt); }
.join-types { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.join-types div { background: rgba(255, 255, 255, .35); border: 1px solid rgba(16, 23, 10, .15); border-radius: 8px; padding: 18px; }
.join-types b { display: block; font-size: 18px; margin-bottom: 8px; }
.join-types p { font-size: 13.5px; line-height: 1.7; opacity: .85; }
.disclaimer { margin-top: 24px; font-size: 12.5px; color: var(--dim); }

/* ============ Cases ============ */
.strip { overflow: hidden; margin-top: 8px; mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent); -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent); }
.strip-track { display: flex; gap: 14px; width: max-content; animation: marq 60s linear infinite; }
.strip:hover .strip-track { animation-play-state: paused; }
.strip figure { width: 340px; aspect-ratio: 4 / 3; border-radius: 8px; overflow: hidden; flex-shrink: 0; }
.strip img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.strip figure:hover img { transform: scale(1.05); }

.cases-grid { display: grid; grid-template-columns: 1fr 1.6fr; gap: 56px; margin-top: 96px; align-items: start; }
.cities { margin-top: 28px; border-top: 1px solid var(--line); }
.cities li { display: flex; justify-content: space-between; align-items: center; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 17px; transition: padding .3s var(--ease), color .3s; }
.cities li:hover { padding-left: 10px; color: var(--volt); }
.cities li span { font-family: var(--mono); font-size: 11px; color: var(--dim); letter-spacing: .12em; }
.mosaic { display: grid; grid-template-columns: 1fr 1fr 1fr; grid-auto-rows: 180px; gap: 10px; }
.mosaic figure { border-radius: 8px; overflow: hidden; }
.mosaic figure:nth-child(1) { grid-column: span 2; grid-row: span 2; }
.mosaic img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.mosaic figure:hover img { transform: scale(1.04); }

/* ============ Platform ============ */
.platform-grid { display: grid; grid-template-columns: 1.35fr 1fr; gap: 56px; align-items: start; }
.device { border-radius: 12px; padding: 10px; background: #1b2420; border: 1px solid var(--line-2); box-shadow: 0 40px 80px -40px rgba(0, 0, 0, .8); transform: perspective(1400px) rotateX(var(--rx, 8deg)); transform-origin: 50% 100%; transition: transform .2s linear; }
.device .bar { display: flex; gap: 6px; padding: 4px 6px 10px; }
.device .bar i { width: 9px; height: 9px; border-radius: 50%; background: #34403a; }
.device img { border-radius: 6px; }
.mods { display: grid; gap: 10px; }
.mods div { border: 1px solid var(--line); border-radius: 8px; padding: 18px 20px; transition: border-color .3s, background .3s; }
.mods div:hover { border-color: var(--volt-dim); background: var(--panel); }
.mods b { display: flex; align-items: center; gap: 10px; font-size: 16px; margin-bottom: 4px; }
.mods b .mono { font-size: 11px; color: var(--volt); font-weight: 400; }
.mods p { color: var(--muted); font-size: 14px; }
.app { margin-top: 64px; display: grid; grid-template-columns: 1fr 1.5fr; gap: 48px; align-items: center; padding: 36px; border: 1px solid var(--line); border-radius: 12px; }
.app h3 { font-size: 24px; }
.app h3 em { font-style: normal; color: var(--volt); }
.app p { color: var(--muted); margin-top: 10px; font-size: 15px; }
.app img { border-radius: 8px; background: #fff; }

/* ============ Service ============ */
.sla { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: rgba(18, 22, 20, .12); border: 1px solid rgba(18, 22, 20, .12); border-radius: 10px; overflow: hidden; }
.sla div { background: var(--paper); padding: 30px 28px 32px; }
.sla .t { font-family: var(--mono); font-size: 11px; letter-spacing: .14em; color: var(--paper-muted); }
.sla b { display: block; font-family: var(--num); font-size: 56px; line-height: 1.1; font-weight: 600; margin: 8px 0 6px; }
.sla b small { font-size: 18px; color: var(--paper-muted); margin-left: 4px; }
.sla p { font-size: 14.5px; color: var(--paper-muted); }
.svc { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; margin-top: 56px; }
.svc b { display: block; font-size: 16px; margin-bottom: 6px; }
.svc p { font-size: 14px; color: var(--paper-muted); }
.regions { margin-top: 56px; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.regions .mono { font-size: 11px; letter-spacing: .14em; color: var(--paper-muted); margin-right: 10px; }
.regions span:not(.mono) { border: 1px solid rgba(18, 22, 20, .15); padding: 7px 14px; border-radius: 999px; font-size: 13.5px; }
.regions span b { margin-right: 6px; }

/* ============ Contact ============ */
.contact { padding: 140px 0 120px; overflow: hidden; }
.contact-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 64px; align-items: end; }
.contact h2 { font-size: clamp(34px, 4.4vw, 64px); line-height: 1.15; font-weight: 700; }
.contact h2 .hl { color: var(--volt); }
.tel-big { display: inline-flex; align-items: baseline; gap: 14px; font-family: var(--num); font-size: clamp(40px, 6vw, 88px); font-weight: 600; letter-spacing: .01em; margin: 28px 0 8px; transition: color .25s; }
.tel-big:hover { color: var(--volt); }
.tel-big small { font-family: var(--mono); font-size: 12px; letter-spacing: .16em; color: var(--muted); }
.cinfo div { display: grid; grid-template-columns: 84px 1fr; gap: 12px; padding: 15px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
.cinfo dt { color: var(--dim); font-family: var(--mono); font-size: 12px; letter-spacing: .1em; padding-top: 3px; }
.cinfo dd a { border-bottom: 1px solid var(--volt); }
.qr { display: flex; gap: 12px; margin-top: 24px; }
.qr div { width: 128px; height: 128px; border-radius: 8px; border: 1px dashed rgba(255, 215, 94, .55); background: rgba(255, 215, 94, .06); display: grid; place-items: center; text-align: center; font-size: 12px; color: var(--todo); padding: 8px; line-height: 1.5; }

.footer { border-top: 1px solid var(--line); padding: 28px 0 32px; font-size: 13px; color: var(--dim); }
.footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; align-items: center; }
.footer .icp { transition: color .2s; }
.footer .icp:hover { color: var(--text); }

.mobile-bar { display: none; }

/* ============ 响应式 ============ */
@media (max-width: 1200px) {
  .nav { gap: 18px; font-size: 13px; }
  .brand small { display: none; }
}
@media (max-width: 1080px) {
  .nav, .h-cta { display: none; }
  .menu-btn { display: block; }
  .header.open { background: rgba(10, 13, 12, .97); }
  .header.open .nav { display: flex; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0; background: rgba(10, 13, 12, .97); padding: 8px 32px 24px; gap: 0; font-size: 17px; border-bottom: 1px solid var(--line); }
  .header.open .nav a { padding: 14px 0; border-bottom: 1px solid var(--line); color: var(--text); }
  .header.open .menu-btn span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
  .header.open .menu-btn span:nth-child(2) { opacity: 0; }
  .header.open .menu-btn span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }
  .hero { min-height: 0; }
  .hero-main { grid-template-columns: 1fr; gap: 56px; }
  .hero-strip ul { grid-template-columns: repeat(3, 1fr); }
  .hero-strip li:nth-child(3) { border-right: 0; }
  .hero-strip li:nth-child(4) { padding-left: 0; }
  .hero-strip li:nth-child(n+4) { border-top: 1px solid var(--line); }
  .products { grid-template-columns: repeat(3, 1fr); }
  .models { grid-template-columns: 1fr 1fr; }
  .biz { grid-template-columns: repeat(3, 1fr); }
  .scene-wrap { grid-template-columns: 1fr; gap: 24px; }
  .scene-tabs { flex-direction: row; overflow-x: auto; border-top: 0; gap: 22px; scrollbar-width: none; }
  .scene-tabs::-webkit-scrollbar { display: none; }
  .scene-tabs button { flex-shrink: 0; padding: 12px 0; }
  .scene-tabs button small { display: none; }
  .scene-tabs button b { font-size: 17px; }
}
@media (max-width: 860px) {
  section { padding: 96px 0; }
  .s-head { grid-template-columns: 1fr; gap: 16px; margin-bottom: 44px; }
  .s-head > p { justify-self: start; }
  .about-top, .flag-grid, .platform-grid, .cases-grid, .contact-grid, .join, .app { grid-template-columns: 1fr; gap: 36px; }
  .about-photo { min-height: 260px; }
  .stage { position: relative; top: 0; }
  .mvv { grid-template-columns: 1fr; }
  .chain { grid-template-columns: repeat(3, 1fr); row-gap: 28px; }
  .chain::before, .chain::after { display: none; }
  .scene-panel { grid-template-columns: 1fr; min-height: 0; }
  .scene-panel .pic { aspect-ratio: 16 / 10; }
  .sla { grid-template-columns: 1fr; }
  .svc { grid-template-columns: 1fr 1fr; }
  .device { --rx: 0deg !important; }
}
@media (max-width: 600px) {
  body { font-size: 15px; padding-bottom: 68px; }
  .wrap { padding: 0 18px; }
  .hero { padding-top: 100px; }
  .hero .lead { font-size: 15.5px; margin: 22px 0 28px; }
  .hero .btns .btn { flex: 1; justify-content: center; padding: 13px 16px; }
  .hero-strip { margin-top: 40px; }
  .hero-strip ul { grid-template-columns: 1fr 1fr; }
  .hero-strip li { padding: 16px 12px 18px 0 !important; border-right: 0 !important; border-top: 1px solid var(--line); }
  .hero-strip li:nth-child(even) { padding-left: 14px !important; border-left: 1px solid var(--line); }
  .hero-strip li:nth-child(-n+2) { border-top: 0; }
  .marquee-track span { font-size: 13.5px; padding: 14px 16px; gap: 16px; }
  section { padding: 80px 0; }
  .biz { grid-template-columns: 1fr 1fr; }
  .biz li:last-child { grid-column: span 2; }
  .chain { grid-template-columns: 1fr 1fr; }
  .big-metrics b { font-size: 26px; }
  .big-metrics div { padding: 14px 12px 16px; }
  .feats { grid-template-columns: 1fr; gap: 22px; }
  .stage { padding: 44px 16px 0; }
  .hot { font-size: 10px; }
  .products { grid-template-columns: 1fr 1fr; gap: 10px; }
  .card .pic { padding: 14px; }
  .card .body { padding: 12px 12px 14px; }
  .card h3 { font-size: 14px; }
  .card .pw { font-size: 20px; margin-bottom: 8px; }
  .card ul { font-size: 12px; }
  .scene-panel .body { padding: 22px 18px; }
  .models { grid-template-columns: 1fr; }
  .model > p { min-height: 0; }
  .join { padding: 28px 20px; }
  .join-types { grid-template-columns: 1fr; }
  .strip figure { width: 240px; }
  .mosaic { grid-auto-rows: 110px; gap: 6px; }
  .app { padding: 22px; }
  .sla b { font-size: 46px; }
  .svc { grid-template-columns: 1fr; gap: 20px; }
  .package dl { grid-template-columns: 5.2em 1fr; }
  .package { padding: 22px 18px; }
  .package .price b { font-size: 40px; }
  .package .price em { margin-left: 0; }
  .contact { padding: 96px 0 80px; }
  .mobile-bar { display: grid; grid-template-columns: 1fr 1.5fr; gap: 8px; position: fixed; left: 0; right: 0; bottom: 0; z-index: 90; padding: 8px 12px calc(8px + env(safe-area-inset-bottom)); background: rgba(10, 13, 12, .92); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-top: 1px solid var(--line); }
  .mobile-bar a { text-align: center; padding: 12px 0; border-radius: 999px; font-size: 15px; font-weight: 600; }
  .mobile-bar a:first-child { border: 1px solid var(--line-2); }
  .mobile-bar a:last-child { background: var(--volt); color: var(--volt-ink); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .rv { opacity: 1; transform: none; }
}