/* ============================================================
   成都光启数联科技有限公司 · 官网样式
   深空科技蓝设计系统(与科庆集团官网同源)
   ============================================================ */
:root {
  --bg: #030B1C;
  --bg-2: #06152F;
  --bg-3: #0B2145;
  --panel: rgba(11, 33, 69, .55);
  --line: rgba(63, 210, 255, .16);
  --line-2: rgba(120, 160, 220, .14);
  --primary: #2470FF;
  --cyan: #3FD2FF;
  --gold: #E8C687;
  --text: #E7F0FC;
  --text-2: #A9BCD8;
  --text-3: #6E82A0;
  --radius: 14px;
  --maxw: 1200px;
  --font: "Microsoft YaHei", "PingFang SC", "Source Han Sans SC", "Segoe UI", sans-serif;
  --num: Bahnschrift, "Segoe UI", var(--font);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- 动效 ---------- */
html.js .reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s ease, transform .8s ease; }
html.js .reveal.in { opacity: 1; transform: none; }
html.js .reveal.d1 { transition-delay: .08s; }
html.js .reveal.d2 { transition-delay: .16s; }
html.js .reveal.d3 { transition-delay: .24s; }
.nowrap { white-space: nowrap; }
section[id] { scroll-margin-top: 84px; }
@media (prefers-reduced-motion: reduce) {
  html.js .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
  * { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

/* ---------- 顶栏 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background .3s ease, box-shadow .3s ease;
}
.nav.scrolled {
  background: rgba(3, 11, 28, .88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--line);
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
  height: 72px; display: flex; align-items: center; gap: 28px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand .ring {
  width: 40px; height: 40px; border-radius: 50%;
  border: 3px solid var(--cyan); border-left-color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--num); font-weight: 700; font-size: 15px; color: #fff;
  flex: none;
}
.brand .t { line-height: 1.3; }
.brand .cn { font-size: 16px; font-weight: 700; letter-spacing: .06em; }
.brand .en { font-size: 9px; letter-spacing: .14em; color: var(--text-3); }
.nav-links { display: flex; gap: 6px; margin-left: auto; }
.nav-links a {
  padding: 8px 14px; font-size: 14px; color: var(--text-2);
  border-radius: 8px; transition: color .2s, background .2s;
}
.nav-links a:hover, .nav-links a.active { color: #fff; background: rgba(63, 210, 255, .1); }
.nav-cta-m { display: none; }
.nav.open .nav-links .nav-cta-m {
  display: block; margin-top: 10px; text-align: center;
  background: linear-gradient(135deg, var(--primary), #1246B8);
  color: #fff; border-radius: 99px; padding: 11px 20px; font-weight: 600;
}
.nav-cta {
  padding: 9px 20px; border-radius: 99px; font-size: 14px; font-weight: 600;
  background: linear-gradient(135deg, var(--primary), #1246B8);
  box-shadow: 0 4px 18px rgba(36, 112, 255, .35);
  transition: transform .2s, box-shadow .2s;
  flex: none;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 8px 26px rgba(36, 112, 255, .5); }
.nav-burger { display: none; margin-left: auto; width: 42px; height: 42px; border: 1px solid rgba(63, 210, 255, .4); border-radius: 10px; background: rgba(11, 33, 69, .6); cursor: pointer; position: relative; }
.nav-burger span {
  position: absolute; left: 10px; right: 10px; top: 19px; height: 2px;
  background: var(--text); border-radius: 2px;
}
.nav-burger span::before, .nav-burger span::after {
  content: ""; position: absolute; left: 0; right: 0; height: 2px;
  background: var(--text); border-radius: 2px; transition: .25s;
}
.nav-burger span::before { top: -7px; }
.nav-burger span::after { top: 7px; }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: min(100svh, 940px);
  display: flex; flex-direction: column; justify-content: center;
  padding: 130px 0 0; overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; z-index: -2; }
.hero-bg::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(90% 70% at 75% 0%, rgba(18, 52, 104, .9) 0%, transparent 60%),
    radial-gradient(60% 50% at 15% 100%, rgba(36, 112, 255, .22) 0%, transparent 70%),
    var(--bg);
}
.hero-grid {
  position: absolute; inset: 0; z-index: -1;
  background-image:
    linear-gradient(rgba(63, 210, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(63, 210, 255, .05) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: radial-gradient(75% 60% at 65% 30%, #000, transparent 78%);
          mask-image: radial-gradient(75% 60% at 65% 30%, #000, transparent 78%);
}
.hero-tag {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; letter-spacing: .3em; color: var(--cyan);
  border: 1px solid rgba(63, 210, 255, .35); padding: 7px 18px; border-radius: 99px;
  margin-bottom: 28px;
}
.hero-tag::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); }
.hero h1 {
  font-size: clamp(34px, 5.2vw, 62px); line-height: 1.28; letter-spacing: .06em;
  font-weight: 700; max-width: 21em;
}
.hero h1 em { font-style: normal; background: linear-gradient(100deg, var(--cyan), var(--primary) 70%); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero .sub {
  margin-top: 22px; font-size: clamp(15px, 1.6vw, 18px); color: var(--text-2); max-width: 620px;
}
.hero .sub b { color: var(--gold); font-weight: 600; }
.hero-actions { display: flex; gap: 16px; margin-top: 38px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 34px; border-radius: 99px; font-size: 15px; font-weight: 600;
  transition: transform .2s, box-shadow .2s, background .2s;
}
.btn-primary { background: linear-gradient(135deg, var(--primary), #1246B8); box-shadow: 0 6px 24px rgba(36, 112, 255, .4); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 34px rgba(36, 112, 255, .55); }
.btn-ghost { border: 1px solid rgba(63, 210, 255, .4); color: var(--cyan); }
.btn-ghost:hover { background: rgba(63, 210, 255, .08); transform: translateY(-2px); }
.hero-belt { margin-top: 64px; position: relative; }
.hero-belt img { width: 100%; height: clamp(280px, 24vw, 470px); object-fit: cover; object-position: center 55%; }
.hero-belt::before { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, var(--bg) 0%, transparent 40%, transparent 78%, var(--bg) 100%); z-index: 1; pointer-events: none; }
.hero-stats {
  position: relative; z-index: 2; margin-top: -30px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
}
.hstat {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px 24px;
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
.hstat .v { font-family: var(--num); font-size: 34px; font-weight: 700; line-height: 1.2; }
.hstat .v small { font-size: 15px; color: var(--cyan); margin-left: 2px; }
.hstat .k { font-size: 13px; color: var(--text-3); margin-top: 4px; letter-spacing: .05em; }

/* ---------- 通用 section ---------- */
section.block { padding: 96px 0; position: relative; }
section.block.alt { background: linear-gradient(180deg, transparent, rgba(11, 33, 69, .35) 18%, rgba(11, 33, 69, .35) 82%, transparent); }
.sec-head { margin-bottom: 52px; }
.sec-head .kicker {
  font-family: var(--num); font-size: 13px; letter-spacing: .34em; color: var(--cyan);
  text-transform: uppercase; display: flex; align-items: center; gap: 14px; margin-bottom: 14px;
}
.sec-head .kicker::before { content: ""; width: 34px; height: 1.5px; background: linear-gradient(90deg, var(--gold), transparent); }
.sec-head h2 { font-size: clamp(26px, 3.4vw, 40px); letter-spacing: .06em; font-weight: 700; }
.sec-head p.desc { margin-top: 14px; color: var(--text-2); max-width: 760px; font-size: 15.5px; }
.sec-head p.desc b { color: var(--gold); font-weight: 600; }

/* ---------- 关于 ---------- */
.about-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 44px; align-items: center; }
.about-copy p { color: var(--text-2); font-size: 15.5px; margin-bottom: 16px; text-align: justify; }
.about-copy p b { color: #fff; }
.about-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 26px; }
.afact { border-left: 2px solid var(--gold); padding-left: 14px; }
.afact .v { font-family: var(--num); font-size: 24px; font-weight: 700; }
.afact .k { font-size: 12.5px; color: var(--text-3); }
.about-visual { display: flex; flex-direction: column; gap: 18px; }
.about-visual .main { position: relative; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line-2); }
.about-visual .main img { width: 100%; height: 330px; object-fit: cover; }
.about-visual .sub { position: relative; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line-2); }
.about-visual .sub img { width: 100%; height: 180px; object-fit: cover; object-position: center 55%; }
.cap-tape {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 26px 14px 8px;
  background: linear-gradient(transparent, rgba(3, 11, 28, .88));
  font-size: 11.5px; color: var(--text-2);
}
.caps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 60px; }
.cap-card {
  background: var(--panel); border: 1px solid var(--line-2); border-radius: var(--radius);
  padding: 26px 24px; transition: transform .25s, border-color .25s;
}
.cap-card:hover { transform: translateY(-5px); border-color: rgba(63, 210, 255, .4); }
.cap-card .n { font-family: var(--num); font-size: 22px; font-weight: 700; color: transparent; -webkit-text-stroke: 1px var(--cyan); }
.cap-card h4 { font-size: 17px; margin: 10px 0 8px; letter-spacing: .04em; }
.cap-card p { font-size: 13.5px; color: var(--text-2); }

/* ---------- 集团 ---------- */
.group-wrap {
  background: linear-gradient(120deg, rgba(11, 33, 69, .75), rgba(6, 21, 47, .9));
  border: 1px solid var(--line-2); border-radius: 20px; padding: 46px 48px; position: relative; overflow: hidden;
}
.group-wrap::after {
  content: "KEQING GROUP"; position: absolute; right: 18px; bottom: 2px;
  font-family: var(--num); font-size: 74px; font-weight: 700; letter-spacing: .06em;
  color: rgba(255, 255, 255, .04); pointer-events: none;
}
.group-wrap h3 { font-size: 24px; letter-spacing: .1em; margin-bottom: 14px; }
.group-wrap h3 span { color: var(--gold); }
.group-wrap > p { color: var(--text-2); max-width: 900px; font-size: 15px; text-align: justify; }
.gstats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 30px; position: relative; z-index: 1; }
.gstat {
  background: rgba(255, 255, 255, .05); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px;
}
.gstat .v { font-family: var(--num); font-size: 28px; font-weight: 700; color: var(--cyan); }
.gstat .v small { font-size: 13px; color: var(--gold); margin-left: 2px; }
.gstat .k { font-size: 12.5px; color: var(--text-3); margin-top: 3px; }
.syn-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 26px; }
.syn {
  background: var(--panel); border: 1px solid var(--line-2); border-radius: var(--radius); padding: 22px;
}
.syn h5 { font-size: 15.5px; margin-bottom: 6px; display: flex; align-items: center; gap: 9px; }
.syn h5::before { content: ""; width: 8px; height: 8px; background: linear-gradient(135deg, var(--primary), var(--cyan)); transform: rotate(45deg); flex: none; }
.syn p { font-size: 13px; color: var(--text-2); }

/* ---------- 品牌 ---------- */
.brands { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.brand-card {
  border-radius: 20px; overflow: hidden; border: 1px solid var(--line-2);
  background: var(--bg-2); display: flex; flex-direction: column;
}
.brand-card .bh { height: 240px; position: relative; overflow: hidden; }
.brand-card .bh img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.brand-card:hover .bh img { transform: scale(1.05); }
.brand-card .bh::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 30%, rgba(6, 21, 47, .95)); }
.brand-card .bh .nm {
  position: absolute; left: 26px; bottom: 18px; z-index: 1;
  font-size: 24px; font-weight: 700; letter-spacing: .08em;
}
.brand-card .bh .nm small { display: block; font-family: var(--num); font-size: 12px; letter-spacing: .28em; color: var(--cyan); font-weight: 400; margin-top: 2px; }
.brand-card .bb { padding: 26px 28px 30px; display: flex; flex-direction: column; gap: 18px; flex: 1; }
.brand-card .bb p { font-size: 14px; color: var(--text-2); text-align: justify; }
.brand-nums { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.bnum { border-top: 2px solid var(--primary); background: rgba(255, 255, 255, .04); padding: 12px 14px; border-radius: 0 0 10px 10px; }
.bnum .v { font-family: var(--num); font-size: 22px; font-weight: 700; }
.bnum .v small { font-size: 12px; color: var(--cyan); }
.bnum .k { font-size: 11.5px; color: var(--text-3); margin-top: 2px; }
.auth-strip {
  margin-top: auto; display: flex; align-items: center; gap: 14px;
  border: 1px dashed rgba(232, 198, 135, .45); background: rgba(232, 198, 135, .07);
  border-radius: 12px; padding: 13px 18px; font-size: 13.5px; color: var(--gold);
}
.auth-strip .seal {
  flex: none; width: 46px; height: 46px; border-radius: 50%; border: 1.5px solid var(--gold);
  display: flex; align-items: center; justify-content: center; text-align: center;
  font-size: 10.5px; line-height: 1.3; font-weight: 700;
}

/* ---------- 产品 ---------- */
.prod-tabs { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 34px; }
.prod-tab {
  padding: 10px 24px; border-radius: 99px; font-size: 14.5px; cursor: pointer;
  border: 1px solid var(--line-2); color: var(--text-2); background: none;
  font-family: var(--font); transition: all .2s;
}
.prod-tab:hover { color: #fff; border-color: rgba(63, 210, 255, .4); }
.prod-tab.active { background: linear-gradient(135deg, var(--primary), #1246B8); color: #fff; border-color: transparent; box-shadow: 0 4px 18px rgba(36, 112, 255, .35); }
.prod-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 18px; transition: opacity .18s ease, min-height .28s ease; }
.prod-grid.switching { opacity: 0; }
.prod-grid .pcard { width: calc((100% - 54px) / 4); }
.pcard {
  background: #fff; border-radius: var(--radius); overflow: hidden;
  transition: transform .25s, box-shadow .25s; display: flex; flex-direction: column;
}
.pcard:hover { transform: translateY(-6px); box-shadow: 0 20px 46px rgba(3, 11, 28, .55); }
.pcard .ph { height: 190px; background: #fff; position: relative; }
.pcard .ph img { width: 100%; height: 100%; object-fit: contain; }
.pcard .ph .series {
  position: absolute; top: 12px; left: 12px; font-family: var(--num); font-size: 10px; letter-spacing: .2em;
  color: #1246B8; border: 1px solid rgba(36, 112, 255, .4); background: rgba(244, 248, 254, .92);
  padding: 3px 10px; border-radius: 99px;
}
.pcard .bd { padding: 16px 18px 20px; background: linear-gradient(180deg, #F4F8FE, #E9F0FA); flex: 1; }
.pcard h4 { font-size: 16px; color: #0E2038; letter-spacing: .02em; }
.pcard .pos { font-size: 12px; color: #1246B8; margin: 3px 0 8px; }
.pcard .sp { font-size: 12px; color: #33465F; line-height: 1.7; }
.pcard .sp b { color: #0E2038; }

/* ---------- 案例 ---------- */
.case-feature { display: grid; grid-template-columns: 1.25fr .75fr; gap: 22px; margin-bottom: 22px; }
.case-feature.flip { grid-template-columns: .75fr 1.25fr; }
.case-hero {
  position: relative; border-radius: 20px; overflow: hidden; min-height: 480px;
  border: 1px solid var(--line-2);
}
.case-hero > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .7s ease; }
.case-hero:hover > img { transform: scale(1.04); }
.case-hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(3,11,28,.35) 0%, rgba(3,11,28,.06) 38%, rgba(3,11,28,.72) 62%, rgba(3,11,28,.96) 88%); }
.case-hero .ct { position: absolute; left: 30px; right: 30px; bottom: 26px; z-index: 1; }
.case-hero .no { font-family: var(--num); font-size: 13px; letter-spacing: .3em; color: var(--cyan); }
.case-hero h3 { font-size: 27px; letter-spacing: .06em; margin: 6px 0 8px; }
.case-hero p { font-size: 14px; color: var(--text-2); max-width: 560px; }
.case-hero .chips { display: flex; gap: 8px; margin-top: 14px; flex-wrap: wrap; }
.chip {
  font-size: 12px; color: var(--cyan); border: 1px solid rgba(63, 210, 255, .35);
  padding: 4px 12px; border-radius: 99px; letter-spacing: .06em;
  background: rgba(3, 11, 28, .5);
}
.chip.gold { color: var(--gold); border-color: rgba(232, 198, 135, .4); }
.case-side { display: flex; flex-direction: column; gap: 22px; }
.case-shot { position: relative; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line-2); flex: 1; min-height: 150px; }
.case-shot img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.case-shot:hover img { transform: scale(1.04); }
.case-shot .cap-tape { font-size: 11px; }
.case-flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 34px; }
.cf {
  background: var(--panel); border: 1px solid var(--line-2); border-radius: var(--radius); padding: 20px 22px; position: relative;
}
.cf .s { font-family: var(--num); font-size: 12px; color: var(--cyan); letter-spacing: .2em; }
.cf h5 { font-size: 15.5px; margin: 6px 0 5px; }
.cf p { font-size: 12.5px; color: var(--text-2); }
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 22px; }
.gallery .g { position: relative; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line-2); height: 250px; }
.gallery .g img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.gallery .g:hover img { transform: scale(1.06); }

/* ---------- 全球标杆 ---------- */
.wall-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.wref {
  background: var(--panel); border: 1px solid var(--line-2); border-radius: var(--radius); padding: 20px 22px;
  transition: border-color .25s, transform .25s;
}
.wref:hover { border-color: rgba(63, 210, 255, .4); transform: translateY(-4px); }
.wref .br {
  display: inline-block; font-family: var(--num); font-size: 10px; letter-spacing: .2em; padding: 3px 10px;
  border-radius: 99px; background: var(--primary); margin-bottom: 10px;
}
.wref .br.pd { background: #12A07C; }
.wref h5 { font-size: 15px; margin-bottom: 6px; letter-spacing: .02em; }
.wref p { font-size: 12.5px; color: var(--text-2); }

/* ---------- 场景 ---------- */
.scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.sc-card { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line-2); background: var(--bg-2); }
.sc-card .ph { height: 170px; position: relative; overflow: hidden; }
.sc-card .ph img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.sc-card:hover .ph img { transform: scale(1.06); }
.sc-card .ph .nm {
  position: absolute; left: 0; bottom: 0; z-index: 1;
  background: linear-gradient(90deg, rgba(4, 16, 39, .92), transparent);
  padding: 8px 26px 8px 16px; font-size: 15.5px; font-weight: 700; letter-spacing: .1em;
}
.sc-card .bd { padding: 16px 18px 20px; font-size: 13px; color: var(--text-2); }
.sc-card .bd .m { color: var(--cyan); font-weight: 600; }

/* ---------- 服务 ---------- */
.sla-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; margin: 40px 0 10px; }
.sla-card {
  width: calc((100% - 64px) / 5);
  text-align: center; padding: 26px 12px;
  background: linear-gradient(165deg, rgba(11, 33, 69, .8), rgba(18, 52, 104, .55));
  border: 1px solid var(--line); border-radius: var(--radius);
}
.sla-card .v { font-family: var(--num); font-size: 34px; font-weight: 700; color: var(--cyan); line-height: 1.15; }
.sla-card .v small { font-size: 14px; color: var(--gold); }
.sla-card .k { font-size: 12.5px; color: var(--text-2); margin-top: 5px; letter-spacing: .06em; }
.mode-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 30px; }
.mode {
  background: var(--panel); border: 1px solid var(--line-2); border-radius: var(--radius); padding: 26px;
}
.mode h4 { font-size: 17px; margin-bottom: 8px; color: var(--gold); letter-spacing: .04em; }
.mode p { font-size: 13.5px; color: var(--text-2); }
.promise {
  margin-top: 30px; display: flex; gap: 18px; align-items: center;
  border: 1px dashed rgba(232, 198, 135, .5); background: rgba(232, 198, 135, .06);
  border-radius: var(--radius); padding: 20px 26px;
}
.promise .seal {
  flex: none; width: 58px; height: 58px; border-radius: 50%; border: 1.5px solid var(--gold);
  color: var(--gold); display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; text-align: center; line-height: 1.35;
}
.promise p { font-size: 14.5px; color: var(--text-2); }
.promise b { color: var(--gold); }
.terms-note { margin-top: 16px; font-size: 12px; color: var(--text-3); letter-spacing: .03em; }

/* ---------- CTA ---------- */
.cta {
  position: relative; border-radius: 24px; overflow: hidden;
  padding: 72px 60px; text-align: center;
  background:
    radial-gradient(80% 120% at 50% -20%, rgba(36, 112, 255, .4), transparent 65%),
    linear-gradient(140deg, var(--bg-3), var(--bg-2));
  border: 1px solid var(--line);
}
.cta h2 { font-size: clamp(24px, 3vw, 36px); letter-spacing: .08em; }
.cta p { color: var(--text-2); margin: 14px auto 30px; max-width: 560px; font-size: 15px; }
.cta .phone { font-family: var(--num); font-size: 30px; font-weight: 700; color: var(--gold); letter-spacing: .04em; }

/* ---------- 页脚 ---------- */
footer { border-top: 1px solid var(--line-2); padding: 56px 0 36px; background: rgba(3, 11, 28, .6); }
.foot-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 40px; }
.foot-brand p { font-size: 13px; color: var(--text-3); margin-top: 14px; max-width: 360px; }
footer h6 { font-size: 14px; letter-spacing: .14em; color: var(--text-2); margin-bottom: 14px; }
footer li { font-size: 13.5px; color: var(--text-3); margin-bottom: 9px; }
footer li b { color: var(--text-2); font-weight: 600; }
footer li a:hover { color: var(--cyan); }
.foot-bottom {
  margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--line-2);
  font-size: 11.5px; color: var(--text-3); line-height: 2; text-align: center;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .wall-grid { grid-template-columns: repeat(2, 1fr); }
  .prod-grid .pcard { width: calc((100% - 18px) / 2); }
  .caps, .syn-cards { grid-template-columns: repeat(2, 1fr); }
  .scene-grid { grid-template-columns: repeat(2, 1fr); }
  .sla-card { width: calc((100% - 32px) / 3); }
  .about-grid, .brands, .case-feature, .case-feature.flip { grid-template-columns: 1fr; }
  .case-feature.flip .case-side { order: 2; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .gstats { grid-template-columns: repeat(2, 1fr); }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}
/* 导航折叠断点:960 起收进汉堡,杜绝 720-960 区间换行破版 */
@media (max-width: 960px) {
  .nav-links, .nav-cta { display: none; }
  .nav-burger { display: block; border-color: rgba(63, 210, 255, .55); }
  .nav.open { background: #030B1C; }
  .nav.open .nav-links {
    display: flex; position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; background: #050F24; padding: 16px 24px 22px;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 30px 60px rgba(0, 0, 0, .55);
  }
  /* 展开时全屏遮罩,点击由 JS 关闭 */
  .nav.open::after {
    content: ""; position: fixed; left: 0; right: 0; top: 72px; bottom: 0;
    background: rgba(2, 7, 18, .6); z-index: -1;
  }
  /* 汉堡变 X */
  .nav.open .nav-burger span { background: transparent; }
  .nav.open .nav-burger span::before { transform: translateY(7px) rotate(45deg); }
  .nav.open .nav-burger span::after { transform: translateY(-7px) rotate(-45deg); }
}
@media (max-width: 720px) {
  .hero h1 { font-size: 27px; }
  .hero .sub { font-size: 14.5px; }
  section.block { padding: 64px 0; }
  .wall-grid, .scene-grid, .caps, .syn-cards, .mode-cards, .case-flow, .gallery { grid-template-columns: 1fr; }
  .prod-grid .pcard { width: 100%; }
  .sla-card { width: calc((100% - 16px) / 2); }
  .group-wrap { padding: 30px 24px; }
  .cta { padding: 48px 26px; }
  .foot-grid { grid-template-columns: 1fr; }
  .foot-brand .en { font-size: 10px; letter-spacing: .05em; white-space: nowrap; }
  .hero-stats { gap: 12px; }
  .hstat { padding: 14px 16px; }
  .hstat .v { font-size: 26px; }
  .case-hero { min-height: 380px; }
  .case-hero .ct { left: 18px; right: 18px; bottom: 18px; }
  .case-hero h3 { font-size: 20px; }
  .case-hero p { font-size: 13px; }
}