/* =========================================================
   北京我爱玩科技信息技术 · 官网样式
   设计基调：克制、精确、工程感。单一主色 + 中性灰阶，无装饰性渐变。
   ========================================================= */

/* ---------- 设计令牌 ---------- */
:root {
  /* 中性 */
  --ink:        #0B0D10;
  --ink-2:      #454B57;
  --ink-3:      #767E8A;
  --ink-4:      #9AA1AC;
  --bg:         #FFFFFF;
  --bg-soft:    #F6F7F9;
  --bg-soft-2:  #EFF1F4;
  --line:       #E4E6EA;
  --line-soft:  #EDEEF1;
  --deep:       #0B0D10;

  /* 主色 */
  --brand:      #0F4FDB;
  --brand-ink:  #0A3AA8;
  --brand-tint: #EDF3FF;

  /* 产品识别色 */
  --pm-jy:      #0F4FDB;
  --pm-jy-tint: #EDF3FF;
  --pm-pd:      #D2661C;
  --pm-pd-tint: #FDF2E8;

  /* 排版 */
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "HarmonyOS Sans SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;

  /* 尺度 */
  --maxw: 1180px;
  --gutter: 24px;
  --nav-h: 64px;
  --r-sm: 8px;
  --r: 12px;
  --r-lg: 16px;
  --r-xl: 22px;

  --ease: cubic-bezier(.22, .61, .36, 1);
  --shadow-sm: 0 1px 2px rgba(11, 13, 16, .04);
  --shadow: 0 4px 16px rgba(11, 13, 16, .06);
  --shadow-lg: 0 18px 48px -12px rgba(11, 13, 16, .18);
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "kern" 1;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
h1, h2, h3, h4, h5 {
  margin: 0;
  color: var(--ink);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -.018em;
  text-wrap: balance;
}
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

::selection { background: #D7E4FF; color: var(--ink); }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; border-radius: 4px; }

/* ---------- 布局原子 ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }
.section { padding: 104px 0; }
/* 锚点跳转时为固定导航留出空间 */
#products, #services, #process, #about { scroll-margin-top: calc(var(--nav-h) + 20px); }
.section--soft { background: var(--bg-soft); }
.section--tight { padding: 80px 0; }
.rule { height: 1px; background: var(--line); border: 0; margin: 0; }

/* eyebrow / 小标签 */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink-3);
  font-family: var(--mono);
}
.eyebrow::before {
  content: ""; width: 20px; height: 1px; background: var(--ink-4); display: block;
}

/* 标题组 */
.h2 {
  font-size: clamp(28px, 4vw, 40px);
  margin-top: 18px;
  letter-spacing: -.028em;
}
.lede {
  margin-top: 16px;
  font-size: clamp(15px, 1.6vw, 17px);
  color: var(--ink-3);
  max-width: 62ch;
  line-height: 1.75;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  height: 46px; padding: 0 22px;
  border-radius: var(--r-sm);
  font-size: 15px; font-weight: 500; letter-spacing: -.008em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .18s var(--ease), color .18s var(--ease),
              border-color .18s var(--ease), transform .18s var(--ease), box-shadow .18s var(--ease);
  white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; transition: transform .22s var(--ease); }
.btn:hover svg { transform: translateX(3px); }

.btn--primary {
  background: var(--brand); color: #fff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .16), 0 6px 16px -10px rgba(15, 79, 219, .7);
}
.btn--primary:hover { background: var(--brand-ink); transform: translateY(-1px); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .16), 0 10px 24px -8px rgba(15, 79, 219, .55); }

.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--ink-4); background: var(--bg-soft); transform: translateY(-1px); }

.btn--dark { background: var(--ink); color: #fff; }
.btn--dark:hover { background: #23262C; transform: translateY(-1px); }

.btn--sm { height: 38px; padding: 0 16px; font-size: 14px; }

/* 文字链 + 箭头 */
.tlink {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 15px; font-weight: 500; color: var(--brand);
}
.tlink svg { width: 15px; height: 15px; transition: transform .22s var(--ease); }
.tlink:hover svg { transform: translateX(4px); }

/* ---------- 顶部导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  height: var(--nav-h);
  background: rgba(255, 255, 255, .82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--ease), background .2s var(--ease);
}
.nav.is-scrolled { border-bottom-color: var(--line); background: rgba(255, 255, 255, .92); }
.nav__in { display: flex; align-items: center; gap: 32px; height: 100%; }

.brand { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand__mark { width: 30px; height: 30px; flex: 0 0 30px; }
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__name { font-size: 15.5px; font-weight: 600; color: var(--ink); letter-spacing: -.01em; }
.brand__sub {
  font-family: var(--mono); font-size: 9.5px; letter-spacing: .19em;
  color: var(--ink-4); text-transform: uppercase; margin-top: 2px;
}

.nav__links { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav__links a {
  padding: 8px 12px; border-radius: var(--r-sm);
  font-size: 14.5px; color: var(--ink-2);
  transition: color .16s, background .16s;
}
.nav__links a:hover { color: var(--ink); background: var(--bg-soft); }
.nav__actions { display: flex; align-items: center; gap: 10px; }
.nav__burger {
  display: none; width: 40px; height: 40px; align-items: center; justify-content: center;
  background: none; border: 1px solid var(--line); border-radius: var(--r-sm); cursor: pointer;
}
.nav__burger span {
  display: block; width: 16px; height: 1.5px; background: var(--ink); position: relative;
}
.nav__burger span::before, .nav__burger span::after {
  content: ""; position: absolute; left: 0; width: 16px; height: 1.5px; background: var(--ink);
}
.nav__burger span::before { top: -5px; }
.nav__burger span::after { top: 5px; }

/* ---------- Hero ---------- */
.hero { padding: 88px 0 96px; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(var(--line-soft) 1px, transparent 1px),
                    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: radial-gradient(ellipse 90% 60% at 30% 0%, #000 10%, transparent 72%);
  -webkit-mask-image: radial-gradient(ellipse 90% 60% at 30% 0%, #000 10%, transparent 72%);
  pointer-events: none;
}
/* 品牌光晕：极低透明度，只做背景层次，不形成可见色块 */
.hero::after {
  content: ""; position: absolute; top: -240px; right: -160px;
  width: 680px; height: 680px; pointer-events: none;
  background: radial-gradient(circle, rgba(15, 79, 219, .10) 0%, rgba(15, 79, 219, .035) 42%, transparent 70%);
}
.hero__in { display: grid; grid-template-columns: 1.06fr .94fr; gap: 56px; align-items: center; position: relative; }
.hero h1 {
  font-size: clamp(34px, 4.8vw, 56px);
  letter-spacing: -.034em;
  line-height: 1.14;
  margin-top: 20px;
  font-weight: 600;
}
.hero h1 em {
  font-style: normal;
  color: var(--ink-4);
}
.hero__sub {
  margin-top: 24px; font-size: 17px; line-height: 1.75;
  color: var(--ink-3); max-width: 52ch;
}
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.hero__meta {
  display: flex; flex-wrap: wrap; gap: 10px 26px; margin-top: 30px;
  padding-top: 24px; border-top: 1px solid var(--line);
  font-size: 13.5px; color: var(--ink-3);
}
.hero__meta span { display: inline-flex; align-items: center; gap: 7px; }
.hero__meta svg { width: 15px; height: 15px; color: var(--brand); flex: 0 0 15px; }

/* ---------- 数据带 ---------- */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.stat { padding: 30px 24px; border-left: 1px solid var(--line-soft); }
.stat:first-child { border-left: 0; }
.stat__num {
  font-family: var(--mono); font-size: 32px; font-weight: 600; color: var(--ink);
  letter-spacing: -.03em; line-height: 1.1; font-variant-numeric: tabular-nums;
}
.stat__num sup { font-size: 15px; font-weight: 500; color: var(--ink-4); top: -1.1em; margin-left: 2px; }
.stat__label { margin-top: 8px; font-size: 13.5px; color: var(--ink-3); line-height: 1.55; }

/* ---------- 产品区 ---------- */
.prod { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; }
.prod + .prod { margin-top: 116px; }
.prod--flip .prod__visual { order: -1; }

.prod__tag {
  display: inline-flex; align-items: center; gap: 8px; height: 26px; padding: 0 11px;
  border-radius: 99px; font-size: 12.5px; font-weight: 500;
  background: var(--pm-jy-tint); color: var(--pm-jy);
  font-family: var(--mono); letter-spacing: .04em;
}
.prod__tag::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: currentColor; }
.prod--pd .prod__tag { background: var(--pm-pd-tint); color: var(--pm-pd); }
.prod__name { font-size: clamp(26px, 3.4vw, 34px); margin-top: 16px; letter-spacing: -.03em; }
.prod__name span { color: var(--ink-4); font-weight: 500; font-size: .58em; letter-spacing: .02em; margin-left: 9px; font-family: var(--mono); }
.prod__desc { margin-top: 16px; font-size: 15.5px; line-height: 1.78; color: var(--ink-3); max-width: 46ch; }
.prod__feats { margin-top: 26px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px 20px; }
.prod__feats li {
  display: flex; align-items: flex-start; gap: 9px;
  font-size: 14.5px; color: var(--ink-2); line-height: 1.6;
}
.prod__feats svg { width: 15px; height: 15px; flex: 0 0 15px; margin-top: 4px; color: var(--pm-jy); }
.prod--pd .prod__feats svg { color: var(--pm-pd); }
.prod__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; align-items: center; }
.prod__note { font-size: 13px; color: var(--ink-4); }

/* ---------- 应用窗口 mockup ---------- */
.win {
  border: 1px solid var(--line); border-radius: var(--r-lg);
  background: #fff; box-shadow: var(--shadow-lg); overflow: hidden;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}
.prod__visual:hover .win { transform: translateY(-4px); box-shadow: 0 28px 64px -16px rgba(11, 13, 16, .24); }
.win__bar {
  display: flex; align-items: center; gap: 8px; height: 38px; padding: 0 14px;
  background: var(--bg-soft); border-bottom: 1px solid var(--line);
}
.win__dots { display: flex; gap: 6px; }
.win__dots i { width: 9px; height: 9px; border-radius: 50%; background: var(--line); }
.win__dots i:nth-child(1) { background: #E5E7EB; }
.win__dots i:nth-child(2) { background: #E5E7EB; }
.win__dots i:nth-child(3) { background: #E5E7EB; }
.win__url {
  flex: 1; text-align: center; font-family: var(--mono); font-size: 11px;
  color: var(--ink-4); letter-spacing: .02em;
}
.win__body { display: flex; min-height: 306px; }

/* 净影 mockup */
.jy__side { width: 176px; flex: 0 0 176px; border-right: 1px solid var(--line); padding: 14px 12px; }
.jy__side h5 {
  font-size: 10.5px; font-family: var(--mono); letter-spacing: .16em; text-transform: uppercase;
  color: var(--ink-4); font-weight: 600; padding: 0 8px; margin-bottom: 10px;
}
.jy__tool {
  display: flex; align-items: center; gap: 9px; padding: 8px; border-radius: var(--r-sm);
  font-size: 12.5px; color: var(--ink-2); margin-bottom: 2px; line-height: 1.3;
}
.jy__tool i {
  width: 22px; height: 22px; flex: 0 0 22px; border-radius: 6px; background: var(--bg-soft-2);
  display: flex; align-items: center; justify-content: center;
}
.jy__tool i svg { width: 12px; height: 12px; color: var(--ink-3); }
.jy__tool.is-active { background: var(--pm-jy-tint); color: var(--pm-jy); font-weight: 500; }
.jy__tool.is-active i { background: #fff; }
.jy__tool.is-active i svg { color: var(--pm-jy); }
.jy__badge {
  margin-left: auto; font-family: var(--mono); font-size: 9px; padding: 2px 5px;
  border-radius: 4px; background: var(--bg-soft-2); color: var(--ink-4); letter-spacing: .04em;
}
.jy__tool.is-active .jy__badge { background: #fff; color: var(--pm-jy); }

.jy__canvas { flex: 1; padding: 16px; background: var(--bg-soft); position: relative; }
.jy__stage {
  height: 100%; border-radius: var(--r-sm); overflow: hidden; position: relative;
  background:
    repeating-conic-gradient(#E9EBEF 0% 25%, #F3F4F7 0% 50%) 50% / 18px 18px;
  display: flex; align-items: center; justify-content: center;
}
.jy__photo {
  width: 78%; aspect-ratio: 4 / 3; border-radius: var(--r-sm); position: relative; overflow: hidden;
  box-shadow: 0 10px 30px -8px rgba(11, 13, 16, .3);
  background: linear-gradient(155deg, #7FA6F0 0%, #4C7DE0 38%, #2E5BC4 62%, #1D3A86 100%);
}
.jy__photo::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 72% 22%, rgba(255, 236, 190, .85) 0%, transparent 34%),
              linear-gradient(to top, rgba(10, 24, 60, .55) 0%, transparent 52%);
}
.jy__photo::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 26%;
  height: 22%;
  background: linear-gradient(to top, rgba(6, 16, 44, .74), rgba(6, 16, 44, 0));
}
.jy__ridge {
  position: absolute; inset: auto 0 0 0; height: 26%;
  background: linear-gradient(to top, #16265A 0%, #25407F 100%);
  clip-path: polygon(0 100%, 0 62%, 16% 40%, 31% 58%, 48% 26%, 64% 54%, 79% 34%, 100% 60%, 100% 100%);
}
.jy__box {
  position: absolute; border: 1.5px dashed rgba(255, 255, 255, .92); border-radius: 4px;
  background: rgba(255, 255, 255, .1);
  left: 8%; bottom: 9%; width: 30%; height: 15%;
}
.jy__box b {
  position: absolute; top: -9px; left: -1px; font-size: 8.5px; font-family: var(--mono);
  color: #fff; background: var(--pm-jy); padding: 1px 4px; border-radius: 3px; font-weight: 500;
}
.jy__bar {
  position: absolute; left: 16px; right: 16px; bottom: 16px; height: 34px;
  background: rgba(255, 255, 255, .96); border: 1px solid var(--line); border-radius: var(--r-sm);
  display: flex; align-items: center; gap: 10px; padding: 0 12px;
  box-shadow: var(--shadow); backdrop-filter: blur(6px);
}
.jy__bar em {
  font-style: normal; font-family: var(--mono); font-size: 10.5px; color: var(--ink-3);
  letter-spacing: .01em;
}
.jy__bar .ok { margin-left: auto; display: inline-flex; align-items: center; gap: 5px; font-size: 10.5px; color: #10893E; font-weight: 500; }
.jy__bar .ok svg { width: 11px; height: 11px; }
.jy__prog { height: 3px; flex: 0 0 78px; border-radius: 99px; background: var(--bg-soft-2); overflow: hidden; }
.jy__prog i { display: block; height: 100%; width: 100%; background: var(--pm-jy); border-radius: 99px; }

/* 拼豆 mockup */
.pd__body { flex: 1; display: grid; grid-template-columns: 148px 1fr 152px; }
.pd__col { padding: 14px; }
.pd__col + .pd__col { border-left: 1px solid var(--line); }
.pd__col h5 {
  font-size: 10.5px; font-family: var(--mono); letter-spacing: .16em; text-transform: uppercase;
  color: var(--ink-4); font-weight: 600; margin-bottom: 10px;
}
.pd__thumb {
  aspect-ratio: 1; border-radius: var(--r-sm); border: 1px solid var(--line);
  background: linear-gradient(150deg, #FFD9A8, #F5A65B 45%, #DE7C33);
  position: relative; overflow: hidden;
}
.pd__thumb::after {
  content: "原图"; position: absolute; left: 8px; bottom: 8px;
  font-size: 10px; font-family: var(--mono); color: #fff;
  background: rgba(0, 0, 0, .32); padding: 1px 6px; border-radius: 4px;
}
.pd__hint { margin-top: 10px; font-size: 11px; color: var(--ink-4); line-height: 1.55; }

.pd__grid {
  display: grid; grid-template-columns: repeat(16, 1fr); gap: 2px;
  aspect-ratio: 1; width: 100%;
}
.pd__grid i { border-radius: 1.5px; background: var(--bg-soft-2); transition: transform .3s var(--ease); }
.pd__visual:hover .pd__grid i { animation: pdPop .9s var(--ease) both; }
@keyframes pdPop { 0% { transform: scale(.2); opacity: 0; } 100% { transform: scale(1); opacity: 1; } }

.pd__palette li {
  display: flex; align-items: center; gap: 8px; padding: 5px 0;
  font-size: 11.5px; color: var(--ink-2);
  border-bottom: 1px dashed var(--line-soft);
}
.pd__palette li:last-child { border-bottom: 0; }
.pd__palette s { width: 12px; height: 12px; border-radius: 3px; flex: 0 0 12px; text-decoration: none; }
.pd__palette b { font-family: var(--mono); font-size: 10.5px; font-weight: 500; color: var(--ink-3); }
.pd__palette span { margin-left: auto; font-family: var(--mono); font-size: 10.5px; color: var(--ink-4); font-variant-numeric: tabular-nums; }

/* ---------- 能力栅格 ---------- */
.caps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden; }
.cap { background: var(--bg); padding: 32px 30px 34px; transition: background .22s var(--ease); position: relative; }
.cap::before {
  content: ""; position: absolute; left: 0; top: 0; height: 2px; width: 0;
  background: var(--brand); transition: width .38s var(--ease);
}
.cap:hover::before { width: 100%; }
.cap:hover { background: var(--bg-soft); }
.cap__ico {
  width: 38px; height: 38px; border-radius: 10px; background: var(--bg-soft-2);
  display: flex; align-items: center; justify-content: center; margin-bottom: 18px;
  transition: background .22s var(--ease);
}
.cap:hover .cap__ico { background: var(--brand-tint); }
.cap__ico svg { width: 19px; height: 19px; color: var(--ink); transition: color .22s var(--ease); }
.cap:hover .cap__ico svg { color: var(--brand); }
.cap h4 { font-size: 17px; font-weight: 600; }
.cap p { margin-top: 10px; font-size: 14.5px; color: var(--ink-3); line-height: 1.72; }
.cap__tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.cap__tags span {
  font-family: var(--mono); font-size: 10.5px; color: var(--ink-3);
  border: 1px solid var(--line); border-radius: 5px; padding: 2px 7px; letter-spacing: .02em;
}

/* ---------- 交付流程 ---------- */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 52px; position: relative; }
.flow__item { padding: 0 26px 0 0; position: relative; }
.flow__item + .flow__item { padding-left: 26px; border-left: 1px solid var(--line); }
/* 节点标记：把四个步骤串成一条可追溯的链路 */
.flow__item + .flow__item::before {
  content: ""; position: absolute; left: -3px; top: 6px;
  width: 5px; height: 5px; border-radius: 50%; background: var(--brand);
}
.flow__n {
  font-family: var(--mono); font-size: 12px; font-weight: 600; letter-spacing: .1em;
  color: var(--brand);
}
.flow__item h4 { margin-top: 12px; font-size: 16.5px; font-weight: 600; }
.flow__item p { margin-top: 10px; font-size: 14px; color: var(--ink-3); line-height: 1.7; }

/* ---------- 优势 ---------- */
.adv { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px 32px; margin-top: 52px; }
.adv__item { padding-top: 20px; border-top: 1px solid var(--line); position: relative; }
.adv__item::before { content: ""; position: absolute; top: -1px; left: 0; width: 40px; height: 1px; background: var(--ink); }
.adv__item h4 { font-size: 16px; font-weight: 600; }
.adv__item p { margin-top: 10px; font-size: 14px; color: var(--ink-3); line-height: 1.72; }

/* ---------- CTA ---------- */
.cta {
  position: relative;
  border: 1px solid var(--line); border-radius: var(--r-xl);
  padding: 60px 56px; text-align: center;
  background:
    radial-gradient(circle at 50% -20%, var(--brand-tint) 0%, transparent 62%),
    var(--bg);
}
/* 顶部一道极细的品牌高光，替代重投影制造高级感 */
.cta::before {
  content: ""; position: absolute; top: -1px; left: 12%; right: 12%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--brand), transparent);
  opacity: .5;
}
.cta h2 { font-size: clamp(26px, 3.6vw, 36px); letter-spacing: -.03em; }
.cta p { margin-top: 16px; font-size: 16px; color: var(--ink-3); max-width: 54ch; margin-inline: auto; }
.cta__row { display: flex; justify-content: center; gap: 12px; margin-top: 30px; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
.foot { background: var(--deep); color: #9AA1AC; padding: 68px 0 0; margin-top: 0; position: relative; }
.foot::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(15, 79, 219, .6), transparent);
}
.foot__top { display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr; gap: 44px; padding-bottom: 48px; }
.foot__brand { display: flex; align-items: center; gap: 11px; }
.foot__brand .brand__name { color: #fff; }
.foot__brand .brand__sub { color: #5C6470; }
.foot__brand .lite rect { }
.foot p.desc { margin-top: 18px; font-size: 14px; line-height: 1.75; color: #767E8A; max-width: 42ch; }
.foot h5 {
  font-size: 11px; font-family: var(--mono); letter-spacing: .16em; text-transform: uppercase;
  color: #5C6470; font-weight: 600; margin-bottom: 16px;
}
.foot nav a, .foot .foot__contact a {
  display: block; font-size: 14px; color: #9AA1AC; padding: 5px 0;
  transition: color .16s;
}
.foot nav a:hover, .foot .foot__contact a:hover { color: #fff; }
.foot__bottom {
  border-top: 1px solid #1A1E26; padding: 22px 0 30px;
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px;
  font-size: 13px; color: #5C6470;
}
.foot__bottom a { color: #767E8A; }
.foot__bottom a:hover { color: #C3C9D2; }
.foot__bottom .beian { margin-left: auto; }
.foot__legal { flex-basis: 100%; font-size: 12.5px; color: #545B67; line-height: 1.7; }

/* ---------- 进场动画（仅在 JS 可用时启用） ---------- */
.js .rv { opacity: 0; transform: translateY(14px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.js .rv.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .rv { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1000px) {
  .hero__in { grid-template-columns: 1fr; gap: 44px; }
  .hero { padding: 64px 0 72px; }
  .prod, .prod--flip .prod__visual { grid-template-columns: 1fr; order: 0; }
  .prod { gap: 40px; }
  .prod + .prod { margin-top: 76px; }
  .caps { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(2, 1fr); gap: 34px 0; }
  .flow__item { padding: 0 26px 0 0; }
  .flow__item + .flow__item { border-left: 0; }
  .adv { grid-template-columns: repeat(2, 1fr); }
  .foot__top { grid-template-columns: 1fr 1fr; gap: 36px; }
}
@media (max-width: 760px) {
  .section { padding: 72px 0; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat { border-left: 0; border-top: 1px solid var(--line-soft); padding: 22px 18px; }
  .stat:nth-child(-n+2) { border-top: 0; }
  .stat:nth-child(even) { border-left: 1px solid var(--line-soft); }
  .nav__links { display: none; }
  .nav__links.is-open {
    display: flex; flex-direction: column; align-items: stretch; gap: 2px;
    position: absolute; top: var(--nav-h); left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line); padding: 12px;
    box-shadow: var(--shadow);
  }
  .nav__links.is-open a { padding: 12px 14px; font-size: 15px; }
  .nav__burger { display: inline-flex; margin-left: auto; }
  .nav__actions .btn { display: none; }
  .prod__feats { grid-template-columns: 1fr; }
  .caps { grid-template-columns: 1fr; }
  .flow, .adv { grid-template-columns: 1fr; gap: 28px; }
  .cta { padding: 40px 24px; }
  .jy__side { display: none; }
  .pd__body { grid-template-columns: 1fr; }
  .pd__col + .pd__col { border-left: 0; border-top: 1px solid var(--line); }
  .pd__palette { display: grid; grid-template-columns: 1fr 1fr; gap: 0 14px; }
  .foot__top { grid-template-columns: 1fr; }
  .cta__row .btn { width: 100%; justify-content: center; }
}