/* ==========================================================================
   恺明科技官网 · 深色科技风设计系统
   合肥恺明信息科技有限责任公司 · kmtec.cn
   纯静态 / 零外链 / 系统字体栈 / 响应式

   核心思路：
   1. 深浅板块强交替，靠明度差制造节奏，而不是靠一层层卡片
   2. 每个板块换一种版式（大编号 / 出血图卡 / 手机样机 / 发光标签墙）
   3. 组件用 --fg / --line / --panel 这类「局部变量」，
      同一套组件放进 .sec-dark 或 .sec-light 都能自适应配色
   ========================================================================== */

:root {
  /* —— 深色底 —— */
  --ink-900:   #050b16;
  --ink-800:   #070f1e;
  --ink-700:   #0b1729;
  --ink-600:   #112038;

  /* —— 浅色底 —— */
  --paper:     #ffffff;
  --paper-2:   #f5f8fc;

  /* —— 主色：科技蓝 → 青 —— */
  --blue:      #2b7fff;
  --blue-600:  #1b64d8;
  --cyan:      #22d3ee;
  --glow:      linear-gradient(135deg, #2b7fff 0%, #22d3ee 100%);

  /* —— 品牌金（取自 Logo #eed092）—— */
  --gold:      #eed092;
  --gold-ink:  #b8933e;

  --radius:    14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --maxw:      1240px;
  --nav-h:     72px;

  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
          "Microsoft YaHei", "Segoe UI", "Helvetica Neue", Arial, sans-serif;

  /* 默认按深色底取色（body 是深色） */
  --fg:        #ffffff;
  --fg-2:      rgba(255,255,255,.70);
  --fg-3:      rgba(255,255,255,.45);
  --line:      rgba(255,255,255,.11);
  --line-2:    rgba(255,255,255,.06);
  --panel:     rgba(255,255,255,.035);
  --panel-2:   rgba(255,255,255,.07);
}

/* 局部配色：深色段 */
.sec-dark {
  --fg:      #ffffff;
  --fg-2:    rgba(255,255,255,.70);
  --fg-3:    rgba(255,255,255,.45);
  --line:    rgba(255,255,255,.11);
  --line-2:  rgba(255,255,255,.06);
  --panel:   rgba(255,255,255,.035);
  --panel-2: rgba(255,255,255,.07);
  --eyebrow: var(--gold);
  background: var(--ink-900);
  color: var(--fg);
}

/* 局部配色：浅色段 */
.sec-light {
  --fg:      #071223;
  --fg-2:    #465468;
  --fg-3:    #7b8799;
  --line:    #e3e9f1;
  --line-2:  #eff3f8;
  --panel:   #ffffff;
  --panel-2: #ffffff;
  --eyebrow: var(--gold-ink);
  background: var(--paper-2);
  color: var(--fg);
}
.sec-light.on-white { background: var(--paper); }

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 20px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--ink-900);
  color: var(--fg);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a   { color: inherit; text-decoration: none; }
img, svg { max-width: 100%; height: auto; display: block; }
ul  { margin: 0; padding: 0; list-style: none; }
p   { margin: 0; }
h1, h2, h3, h4 {
  margin: 0;
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -.022em;
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-inline: 28px;
}

/* --------------------------------------------------------------------------
   排版比例
   -------------------------------------------------------------------------- */
.display  { font-size: clamp(36px, 5.4vw, 66px); line-height: 1.12; letter-spacing: -.032em; }
.h-sec    { font-size: clamp(27px, 3.7vw, 46px); line-height: 1.16; letter-spacing: -.028em; }
.lead     { font-size: clamp(16px, 1.25vw, 18.5px); color: var(--fg-2); line-height: 1.8; }

/* 渐变强调字 */
.grad {
  background: linear-gradient(96deg, var(--gold) 6%, #ffffff 62%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.grad-blue {
  background: var(--glow);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* 眉标：带一颗会呼吸的光点 */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .2em;
  color: var(--eyebrow);
}
.eyebrow::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 4px color-mix(in srgb, currentColor 18%, transparent);
}

/* 板块序号，贴在右上角 */
.sec-index {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .18em;
  color: var(--fg-3);
}

.sec-head { max-width: 800px; }
.sec-head .h-sec { margin-top: 20px; }
.sec-head .lead  { margin-top: 20px; }
.sec-head.center { margin-inline: auto; text-align: center; }
.sec-head.center .eyebrow { justify-content: center; }

.sec-bar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 56px;
}

/* 板块间距 */
.section       { padding: 118px 0; position: relative; }
.section-tight { padding: 56px 0;  position: relative; }

/* --------------------------------------------------------------------------
   按钮
   -------------------------------------------------------------------------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 30px;
  border-radius: 999px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.4;
  white-space: nowrap;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform .2s cubic-bezier(.4,0,.2,1), box-shadow .25s ease,
              background .2s ease, border-color .2s ease, color .2s ease;
}
.btn-primary {
  background: var(--glow);
  color: #02101f;
  box-shadow: 0 10px 34px -10px rgba(43,127,255,.85);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 44px -12px rgba(43,127,255,1); }

.btn-line {
  background: transparent;
  color: var(--fg);
  border-color: var(--line);
}
.btn-line:hover { border-color: color-mix(in srgb, var(--blue) 60%, transparent); background: var(--panel-2); }

.btn-gold { background: var(--gold); color: #3d2c06; }
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 16px 40px -14px rgba(238,208,146,.9); }

.btn-lg { padding: 17px 38px; font-size: 16.5px; }

/* 箭头文字链 */
.arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--fg);
}
.arrow svg { transition: transform .22s ease; }
.arrow:hover svg { transform: translateX(5px); }

/* --------------------------------------------------------------------------
   装饰：网格 / 光斑 / 渐变细线
   -------------------------------------------------------------------------- */
.grid-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 72px 72px;
  pointer-events: none;
}
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  opacity: .55;
}
.hr-glow {
  height: 1px;
  border: 0;
  margin: 0;
  background: linear-gradient(90deg, transparent, rgba(43,127,255,.55), rgba(34,211,238,.35), transparent);
}

/* --------------------------------------------------------------------------
   导航
   -------------------------------------------------------------------------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background .3s ease, border-color .3s ease, backdrop-filter .3s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(5,11,22,.82);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom-color: rgba(255,255,255,.09);
}
.nav > .container { display: flex; align-items: center; gap: 22px; }

.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand .logo { width: 36px; height: 36px; filter: brightness(0) invert(1); }
.brand .bn { display: block; font-size: 19.5px; font-weight: 700; letter-spacing: .01em; color: #fff; }
.brand .bs {
  display: block;
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: .24em;
  color: rgba(255,255,255,.42);
  line-height: 1.2;
}

.nav nav { margin-left: auto; }
.nav-links { display: flex; align-items: center; gap: 2px; }
.nav-links > li > a {
  display: block;
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255,255,255,.72);
  transition: color .2s ease, background .2s ease;
}
.nav-links > li > a:hover,
.nav-links > li > a.active { color: #fff; background: rgba(255,255,255,.08); }
.nav-links .ext::after { content: "↗"; font-size: 11px; margin-left: 4px; opacity: .55; }
.nav-links .only-mobile { display: none; }

.nav-cta { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.nav-cta .btn { padding: 10px 22px; font-size: 14.5px; }

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  padding: 0;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.06);
  border-radius: 12px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 17px; height: 1.5px;
  margin: 3.5px auto;
  background: #fff;
  border-radius: 2px;
  transition: transform .25s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  padding: calc(var(--nav-h) + 92px) 0 0;
  overflow: hidden;
  background:
    radial-gradient(1100px 620px at 78% 2%, rgba(27,100,216,.34), transparent 60%),
    linear-gradient(180deg, #071223 0%, var(--ink-900) 62%);
}
.hero .grid-mask {
  position: absolute; inset: 0;
  -webkit-mask-image: radial-gradient(780px 520px at 68% 14%, #000 10%, transparent 76%);
  mask-image: radial-gradient(780px 520px at 68% 14%, #000 10%, transparent 76%);
}
.hero .b1 { width: 560px; height: 560px; top: -180px; right: -90px; background: rgba(43,127,255,.42); }
.hero .b2 { width: 420px; height: 420px; bottom: -160px; left: -120px; background: rgba(238,208,146,.14); }
.hero .container { position: relative; z-index: 2; }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  gap: 64px;
  align-items: center;
}
.hero h1 { margin-top: 26px; }
.hero .lead { margin-top: 26px; max-width: 580px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 40px; }

/* Hero 右侧：业务清单，带渐变描边 */
.hero-card {
  position: relative;
  border-radius: var(--radius-xl);
  padding: 1px;
  background: linear-gradient(150deg, rgba(43,127,255,.55), rgba(255,255,255,.07) 40%, rgba(238,208,146,.28));
  box-shadow: 0 40px 90px -30px rgba(0,0,0,.9);
}
.hero-card-in {
  border-radius: calc(var(--radius-xl) - 1px);
  background: linear-gradient(170deg, rgba(17,32,56,.92), rgba(7,15,30,.96));
  backdrop-filter: blur(8px);
  padding: 28px 26px;
}
.hero-card h2 {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .2em;
  color: rgba(255,255,255,.5);
  margin-bottom: 20px;
}
.hero-card ul { display: grid; gap: 8px; }
.hero-card li a {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 15px 16px;
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,.07);
  background: rgba(255,255,255,.03);
  transition: background .24s ease, border-color .24s ease, transform .24s ease;
}
.hero-card li a:hover {
  background: rgba(43,127,255,.12);
  border-color: rgba(43,127,255,.45);
  transform: translateX(5px);
}
.hero-card .ic {
  flex-shrink: 0;
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: 11px;
  background: rgba(43,127,255,.14);
  color: #7db4ff;
}
.hero-card b { display: block; font-size: 15px; font-weight: 600; }
.hero-card small { display: block; font-size: 12.5px; color: rgba(255,255,255,.5); }
.hero-card .go { margin-left: auto; color: rgba(255,255,255,.3); flex-shrink: 0; }

/* Hero 底部数据条 */
.hero-stats {
  position: relative;
  z-index: 2;
  margin-top: 84px;
  border-top: 1px solid rgba(255,255,255,.1);
}
.hero-stats .row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.hero-stats .cell {
  padding: 30px 30px 34px;
  border-right: 1px solid rgba(255,255,255,.1);
}
.hero-stats .cell:first-child { padding-left: 0; }
.hero-stats .cell:last-child  { border-right: 0; padding-right: 0; }
.hero-stats .k {
  font-size: clamp(19px, 1.7vw, 23px);
  font-weight: 700;
  letter-spacing: -.02em;
  background: linear-gradient(120deg, #fff 30%, var(--gold));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-stats .v { margin-top: 5px; font-size: 13.5px; color: rgba(255,255,255,.52); }

/* --------------------------------------------------------------------------
   客户 Logo 跑马灯
   -------------------------------------------------------------------------- */
.marquee-band { padding: 46px 0 50px; background: var(--paper); }
.marquee-band .cap {
  text-align: center;
  padding-inline: 24px;
  font-size: 13px;
  letter-spacing: .16em;
  color: #8d99ab;
  margin-bottom: 30px;
}
.marquee {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent);
}
.marquee-track {
  display: flex;
  align-items: center;
  gap: 58px;
  width: max-content;
  animation: marquee 68s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.marquee img {
  height: 38px;
  width: auto;
  flex-shrink: 0;
  filter: grayscale(1);
  opacity: .46;
  transition: filter .25s ease, opacity .25s ease;
}
.marquee img:hover { filter: none; opacity: 1; }
.marquee-note {
  text-align: center;
  margin-top: 28px;
  padding-inline: 24px;
  font-size: 12.5px;
  color: #9aa5b5;
}

/* --------------------------------------------------------------------------
   核心业务：大编号卡
   -------------------------------------------------------------------------- */
.biz-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 262px), 1fr));
  gap: 20px;
}
.biz {
  position: relative;
  overflow: hidden;
  padding: 34px 28px 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  display: flex;
  flex-direction: column;
  transition: transform .3s cubic-bezier(.4,0,.2,1), border-color .3s ease,
              background .3s ease, box-shadow .3s ease;
}
.biz::after {            /* hover 时顶部亮起一道光 */
  content: "";
  position: absolute; top: 0; left: 12%; right: 12%;
  height: 1px;
  background: var(--glow);
  opacity: 0;
  transition: opacity .3s ease;
}
.biz:hover {
  transform: translateY(-6px);
  border-color: rgba(43,127,255,.42);
  background: rgba(43,127,255,.055);
  box-shadow: 0 34px 70px -34px rgba(43,127,255,.9);
}
.biz:hover::after { opacity: 1; }
.biz .n {
  position: absolute;
  top: -12px; right: 10px;
  font-size: 92px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.06em;
  color: var(--fg);
  opacity: .055;
  pointer-events: none;
}
.biz .ic {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border-radius: 13px;
  background: rgba(43,127,255,.13);
  color: #6aa9ff;
  margin-bottom: 20px;
}
.sec-light .biz .ic { background: #e8f0ff; color: var(--blue-600); }
.biz h3 { font-size: 19.5px; }
.biz p  { margin-top: 12px; font-size: 14.8px; color: var(--fg-2); flex: 1; }
.biz .tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 20px; }
.biz .tags span {
  font-size: 12.5px;
  color: var(--fg-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 12px;
}
.biz .arrow { margin-top: 20px; color: #7db4ff; }
.sec-light .biz .arrow { color: var(--blue-600); }

/* --------------------------------------------------------------------------
   产品聚焦：恺明云店
   -------------------------------------------------------------------------- */
.prod {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, .82fr);
  gap: 70px;
  align-items: center;
}
.prod h2 { margin-top: 20px; }
.prod > div > .lead { margin-top: 20px; }
.prod-list { display: grid; gap: 2px; margin-top: 34px; }
.prod-list li {
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 14px;
  padding: 15px 0;
  border-top: 1px solid var(--line);
  font-size: 15.2px;
  color: var(--fg-2);
  line-height: 1.7;
}
.prod-list li:last-child { border-bottom: 1px solid var(--line); }
.prod-list .tick {
  margin-top: 4px;
  width: 20px; height: 20px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: rgba(43,127,255,.14);
  color: var(--blue);
}
.sec-light .prod-list .tick { background: #e0ecff; color: var(--blue-600); }
.prod-list b { color: var(--fg); font-weight: 600; }
.prod-actions { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 34px; }

/* 手机样机 */
.phone-wrap { position: relative; display: grid; place-items: center; }
.phone-wrap .halo {
  position: absolute;
  width: 380px; height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(43,127,255,.28), transparent 68%);
  filter: blur(30px);
}
.phone {
  position: relative;
  width: 286px;
  aspect-ratio: 286 / 590;
  background: linear-gradient(160deg, #1c2942, #0a1220);
  border-radius: 42px;
  padding: 11px;
  box-shadow: 0 50px 90px -34px rgba(0,0,0,.95), inset 0 0 0 1px rgba(255,255,255,.14);
}
/* 顶部灵动岛。原来这里是一条 92x7 的细长圆角条，形状等同于底部 home 指示条，
   放在顶部会让整台机器读成上下颠倒，所以改成有体积的岛形。
   尺寸与 saas 子站 style.css 的 .phone::after 对齐（两边机身同为 286px 宽） */
.phone::before {
  content: "";
  position: absolute;
  top: 20px; left: 50%;
  transform: translateX(-50%);
  width: 82px; height: 24px;
  border-radius: 999px;
  background: #04060c;
  z-index: 2;
}
/* 不加底部 home 指示条：App 截图自带完整底部 tab 栏，
   再叠一条会压在标签文字上，且顶部岛形已经足够指明方向 */
.phone-screen {
  width: 100%; height: 100%;
  border-radius: 32px;
  overflow: hidden;
  background: #fff;
  /* 两张 App 截图都是从内容顶端裁的、不含状态栏，直接放灵动岛会盖住 App 自己的标题。
     这里让出一条状态栏高度，岛落在空条上，截图内容整体下移不被遮。
     34px = 机身 padding 11 + 岛 top 20 + 岛高 24 - 11，刚好把岛完整兜住 */
  padding-top: 34px;
}
.phone-screen img { width: 100%; height: 100%; object-fit: cover; object-position: top; }

/* --------------------------------------------------------------------------
   行业方案：出血大图卡
   -------------------------------------------------------------------------- */
.ind-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 248px), 1fr));
  gap: 20px;
}
.ind {
  position: relative;
  display: block;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  isolation: isolate;
}
.ind img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .7s cubic-bezier(.2,.7,.3,1);
}
.ind::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(to top,
    rgba(5,11,22,.96) 4%, rgba(5,11,22,.72) 34%, rgba(5,11,22,.18) 66%, rgba(5,11,22,.05) 100%);
}
.ind:hover img { transform: scale(1.07); }
.ind .body {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  z-index: 2;
  padding: 26px 24px 24px;
  color: #fff;
}
.ind .body h3 { font-size: 20px; }
.ind .body p {
  margin-top: 9px;
  font-size: 13.8px;
  color: rgba(255,255,255,.66);
  line-height: 1.65;
}
.ind .body .go {
  margin-top: 16px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--gold);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity .3s ease, transform .3s ease;
}
.ind:hover .body .go { opacity: 1; transform: none; }

/* --------------------------------------------------------------------------
   典型项目场景
   -------------------------------------------------------------------------- */
.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr));
  gap: 20px;
}
.case {
  position: relative;
  padding: 32px 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  transition: border-color .28s ease, box-shadow .28s ease, transform .28s ease;
}
.case:hover {
  transform: translateY(-4px);
  border-color: rgba(43,127,255,.38);
  box-shadow: 0 30px 60px -32px rgba(11,26,51,.5);
}
.case .kind {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .05em;
  color: var(--blue-600);
  background: #e9f1ff;
  border-radius: 999px;
  padding: 5px 13px;
}
.sec-dark .case .kind { color: #86bbff; background: rgba(43,127,255,.14); }
.case h3   { font-size: 19px; margin-top: 17px; }
.case .need { margin-top: 12px; font-size: 14.8px; color: var(--fg-2); }
.case .did  { margin-top: 20px; padding-top: 18px; border-top: 1px solid var(--line); }
.case .did h4 {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .16em;
  color: var(--fg-3);
  margin-bottom: 13px;
}
.case .did ul { display: grid; gap: 9px; }
.case .did li {
  position: relative;
  padding-left: 19px;
  font-size: 14.2px;
  color: var(--fg-2);
  line-height: 1.65;
}
.case .did li::before {
  content: "";
  position: absolute; left: 0; top: 9px;
  width: 7px; height: 7px;
  border-radius: 2px;
  background: var(--glow);
  opacity: .75;
}

/* 横向流程条 */
.flow {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 190px), 1fr));
  gap: 0;
  margin-top: 64px;
  border-top: 1px solid var(--line);
}
.flow .step {
  position: relative;
  padding: 26px 24px 4px 0;
}
.flow .step::before {      /* 顶部节点 */
  content: "";
  position: absolute;
  top: -5px; left: 0;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--glow);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--blue) 16%, transparent);
}
.flow .step .i {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--fg-3);
}
.flow .step h4 { font-size: 16.5px; margin-top: 9px; }
.flow .step p  { margin-top: 8px; font-size: 13.8px; color: var(--fg-2); line-height: 1.66; }

/* --------------------------------------------------------------------------
   技术能力：发光标签墙
   -------------------------------------------------------------------------- */
.stack-grid {
  display: grid;
  grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
  gap: 64px;
  align-items: start;
}
/* 左侧标题跟随滚动，右侧四张卡从它旁边走过 */
.stack-grid > .stack-intro { position: sticky; top: calc(var(--nav-h) + 48px); }
.stack-cats { display: grid; gap: 18px; }
.stack-cat {
  padding: 26px 26px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  transition: border-color .28s ease, background .28s ease;
}
.stack-cat:hover { border-color: rgba(43,127,255,.36); background: rgba(43,127,255,.05); }
.stack-cat .head { display: flex; align-items: center; gap: 13px; }
.stack-cat .ic {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: 11px;
  background: rgba(43,127,255,.13);
  color: #6aa9ff;
}
.stack-cat h3 { font-size: 17px; }
.stack-cat .tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.stack-cat .tags span {
  font-size: 13px;
  padding: 6px 13px;
  border-radius: 8px;
  color: var(--fg-2);
  border: 1px solid var(--line);
  background: rgba(255,255,255,.02);
  transition: color .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.stack-cat .tags span:hover {
  color: #fff;
  border-color: rgba(43,127,255,.5);
  box-shadow: 0 0 16px -4px rgba(43,127,255,.8);
}

/* --------------------------------------------------------------------------
   CTA
   -------------------------------------------------------------------------- */
.cta {
  position: relative;
  overflow: hidden;
  padding: 108px 0;
  background:
    radial-gradient(760px 340px at 82% 12%, rgba(43,127,255,.42), transparent 62%),
    radial-gradient(520px 300px at 8% 92%, rgba(238,208,146,.13), transparent 66%),
    var(--ink-800);
}
.cta .inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 36px;
}
.cta h2 { margin-top: 20px; max-width: 620px; }
.cta p  { margin-top: 16px; color: rgba(255,255,255,.66); max-width: 560px; font-size: 16.5px; }
.cta .acts { display: flex; flex-wrap: wrap; gap: 14px; }

/* --------------------------------------------------------------------------
   页脚
   -------------------------------------------------------------------------- */
.footer { background: var(--ink-900); border-top: 1px solid rgba(255,255,255,.08); }
.footer-top {
  display: grid;
  grid-template-columns: 1.7fr 1fr 1fr 1.15fr;
  gap: 46px;
  padding: 74px 0 52px;
}
.footer .desc {
  margin-top: 20px;
  max-width: 330px;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(255,255,255,.52);
}
.footer h4 {
  font-size: 14.5px;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: .02em;
}
.footer ul { display: grid; gap: 11px; }
.footer li, .footer a { font-size: 14.5px; color: rgba(255,255,255,.55); line-height: 1.6; }
.footer a:hover { color: #fff; }
.footer .f-mail {
  font-size: 17px;          /* 邮箱比原来的电话号码长，收一档字号 */
  font-weight: 700;
  color: var(--gold);
  letter-spacing: -.01em;
  word-break: break-all;    /* 窄栏下别把页脚撑出去 */
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.07);
  padding: 22px 0 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  justify-content: space-between;
  font-size: 13px;
  color: rgba(255,255,255,.38);
}

/* --------------------------------------------------------------------------
   滚动进入动画
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .75s cubic-bezier(.2,.7,.3,1), transform .75s cubic-bezier(.2,.7,.3,1);
}
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .07s; }
.reveal.d2 { transition-delay: .14s; }
.reveal.d3 { transition-delay: .21s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .marquee-track { animation: none; }
  html { scroll-behavior: auto; }
}

/* --------------------------------------------------------------------------
   响应式
   -------------------------------------------------------------------------- */
@media (max-width: 1080px) {
  .hero-grid,
  .prod,
  .prod.reverse,
  .stack-grid { grid-template-columns: minmax(0, 1fr); gap: 48px; }
  /* 单列后取消镜像，两块都恢复「文案在上、样机在下」 */
  .prod.reverse .brand-copy,
  .prod.reverse .phone-wrap { order: 0; }
  .brands-stack { gap: 66px; }
  .brand-row + .brand-row { padding-top: 66px; }
  .stack-grid > .stack-intro { position: static; }
  .hero-stats .row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-stats .cell:nth-child(2) { border-right: 0; padding-right: 0; }
  .hero-stats .cell:nth-child(3) { padding-left: 0; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 900px) {
  .section       { padding: 78px 0; }
  .section-tight { padding: 44px 0; }
  .sec-bar { flex-direction: column; align-items: flex-start; gap: 18px; margin-bottom: 40px; }
  .hero { padding-top: calc(var(--nav-h) + 56px); }
  .hero-stats { margin-top: 58px; }

  .nav nav {
    position: absolute;
    top: var(--nav-h);
    left: 14px; right: 14px;
    margin: 0;
  }
  .nav-links {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 14px;
    border-radius: var(--radius-lg);
    background: rgba(8,16,30,.97);
    backdrop-filter: blur(18px);
    border: 1px solid rgba(255,255,255,.1);
    box-shadow: 0 30px 60px -20px rgba(0,0,0,.9);
  }
  .nav-links.open { display: flex; }
  .nav-links > li > a { padding: 13px 14px; font-size: 16px; border-radius: 12px; }
  .nav-links .only-mobile { display: block; margin-top: 6px; border-top: 1px solid rgba(255,255,255,.09); padding-top: 6px; }
  .nav-cta { margin-left: auto; }
  .nav-cta .btn-line { display: none; }
  .nav-toggle { display: block; }
}

@media (max-width: 640px) {
  .container { padding-inline: 20px; }
  .hero-stats .row { grid-template-columns: minmax(0, 1fr); }
  .hero-stats .cell { border-right: 0; padding: 22px 0; border-top: 1px solid rgba(255,255,255,.08); }
  .hero-stats .cell:first-child { border-top: 0; }
  .footer-top { grid-template-columns: 1fr; gap: 34px; padding-top: 56px; }
  .cta { padding: 76px 0; }
  .cta .inner { flex-direction: column; align-items: flex-start; }
  .biz { padding: 28px 24px; }
  .case { padding: 26px 22px; }
  .marquee img { height: 30px; }
  .marquee-track { gap: 40px; }
}

/* ==========================================================================
   内页组件（产品与服务 / 解决方案 / 关于我们 / 联系我们）
   全部走 --fg / --line / --panel，放进 .sec-dark 或 .sec-light 都能自适应
   ========================================================================== */

/* --------------------------------------------------------------------------
   内页页头
   -------------------------------------------------------------------------- */
.page-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--nav-h) + 76px) 0 72px;
  background:
    radial-gradient(900px 460px at 80% 0%, rgba(27,100,216,.32), transparent 62%),
    linear-gradient(180deg, #071223 0%, var(--ink-900) 72%);
}
.page-hero .grid-mask {
  position: absolute; inset: 0;
  -webkit-mask-image: radial-gradient(640px 380px at 72% 8%, #000 8%, transparent 78%);
  mask-image: radial-gradient(640px 380px at 72% 8%, #000 8%, transparent 78%);
}
.page-hero .pb { width: 460px; height: 460px; top: -200px; right: -60px; background: rgba(43,127,255,.36); }
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { margin-top: 20px; font-size: clamp(31px, 4.4vw, 52px); letter-spacing: -.03em; }
.page-hero .lead { margin-top: 20px; max-width: 760px; }

.crumb { font-size: 13px; color: rgba(255,255,255,.42); letter-spacing: .02em; }
.crumb a:hover { color: #fff; }
.crumb i { font-style: normal; margin: 0 8px; opacity: .5; }

/* --------------------------------------------------------------------------
   图文交替块（产品与服务）
   -------------------------------------------------------------------------- */
.feat {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 64px;
  align-items: center;
}
.feat.reverse .feat-media { order: -1; }
.feat h2 { margin-top: 20px; }
.feat > div > .lead { margin-top: 20px; }
.feat-actions { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 32px; }

.tick-list { display: grid; gap: 2px; margin-top: 30px; }
.tick-list li {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 14px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  font-size: 15.2px;
  color: var(--fg-2);
  line-height: 1.7;
}
.tick-list li:last-child { border-bottom: 1px solid var(--line); }
.tick-list .tk {
  margin-top: 4px; width: 19px; height: 19px;
  display: grid; place-items: center; border-radius: 50%;
  background: rgba(43,127,255,.15); color: #6aa9ff;
}
.sec-light .tick-list .tk { background: #e0ecff; color: var(--blue-600); }
.tick-list b { color: var(--fg); font-weight: 600; }

.feat-media > img {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
}
.feat-media > img + .spec { margin-top: 20px; }

/* 规格面板 */
.spec {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  padding: 28px 26px;
}
.spec h3 {
  font-size: 12.5px; font-weight: 600; letter-spacing: .16em;
  color: var(--fg-3);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.spec .rows { display: grid; margin-top: 16px; }
.spec .rows > div {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 14px;
  padding: 12px 0;
  font-size: 14.4px;
  align-items: start;
}
.spec .rows > div + div { border-top: 1px solid var(--line-2); }
.spec .rk { color: var(--fg-3); }
.spec .rv { color: var(--fg-2); }
.spec .chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.spec .chips span {
  font-size: 12.6px; padding: 5px 12px; border-radius: 999px;
  color: var(--fg-2); border: 1px solid var(--line);
}

/* 截图条 */
.shots { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr)); gap: 20px; margin-top: 52px; }
.shots figure { margin: 0; }
.shots img { width: 100%; border-radius: var(--radius); border: 1px solid var(--line); }
.shots figcaption { margin-top: 12px; font-size: 13.5px; color: var(--fg-3); text-align: center; }

/* --------------------------------------------------------------------------
   解决方案详解块
   -------------------------------------------------------------------------- */
.sol {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--panel);
}
.sol + .sol { margin-top: 26px; }
.sol-head {
  display: flex; align-items: center; gap: 18px;
  padding: 24px 30px;
  border-bottom: 1px solid var(--line);
  background: var(--panel-2);
}
.sol-head .ic {
  flex-shrink: 0; width: 46px; height: 46px;
  display: grid; place-items: center; border-radius: 13px;
  background: rgba(43,127,255,.14); color: #6aa9ff;
}
.sec-light .sol-head .ic { background: #e8f0ff; color: var(--blue-600); }
.sol-head h3 { font-size: 20px; }
.sol-head .sub { font-size: 13.8px; color: var(--fg-3); margin-top: 3px; }

.tri { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.tri > div { padding: 26px 30px; }
.tri > div + div { border-left: 1px solid var(--line); }
.tri h4 { font-size: 12px; font-weight: 600; letter-spacing: .16em; color: var(--fg-3); margin-bottom: 14px; }
.tri ul { display: grid; gap: 10px; }
.tri li { position: relative; padding-left: 18px; font-size: 14.4px; color: var(--fg-2); line-height: 1.66; }
.tri li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 6px; height: 6px; border-radius: 2px;
  background: rgba(43,127,255,.55);
}
.tri .pain li::before { background: rgba(238,208,146,.6); }
.tri .out li::before { background: var(--glow); }

/* --------------------------------------------------------------------------
   编号要点网格（承诺 / 优势）
   -------------------------------------------------------------------------- */
.pts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 268px), 1fr));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--panel);
}
.pts .pt {
  padding: 32px 28px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin: 0 -1px -1px 0;
}
.pts .pt .i {
  display: flex; align-items: center; gap: 10px;
  font-size: 12px; font-weight: 700; letter-spacing: .14em; color: #6aa9ff;
}
.sec-light .pts .pt .i { color: var(--blue-600); }
.pts .pt .i::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.pts .pt h3 { font-size: 18px; margin-top: 16px; }
.pts .pt p { margin-top: 10px; font-size: 14.5px; color: var(--fg-2); }

/* --------------------------------------------------------------------------
   价值卡 / 保障卡
   -------------------------------------------------------------------------- */
.vals { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr)); gap: 20px; }
.val {
  padding: 30px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  transition: border-color .26s ease, transform .26s ease, background .26s ease;
}
.val:hover { transform: translateY(-4px); border-color: rgba(43,127,255,.36); background: rgba(43,127,255,.05); }
.val .ic {
  width: 46px; height: 46px; margin-bottom: 18px;
  display: grid; place-items: center; border-radius: 13px;
  background: rgba(43,127,255,.13); color: #6aa9ff;
}
.sec-light .val .ic { background: #e8f0ff; color: var(--blue-600); }
.val h3 { font-size: 17.5px; }
.val p { margin-top: 10px; font-size: 14.4px; color: var(--fg-2); }

/* --------------------------------------------------------------------------
   关于我们：信息卡 / 时间线 / 相册 / 证照
   -------------------------------------------------------------------------- */
.about-grid { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr); gap: 60px; align-items: start; }
.about-grid h2 { margin-top: 20px; }
.about-grid p.lead { margin-top: 20px; }
.about-grid p.lead + p.lead { margin-top: 16px; }

.info-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  padding: 28px 26px;
}
.info-card h3 { font-size: 12.5px; font-weight: 600; letter-spacing: .16em; color: var(--fg-3); }
.info-list { display: grid; margin-top: 18px; }
.info-list li {
  display: grid; grid-template-columns: 90px 1fr; gap: 14px;
  padding: 11px 0; font-size: 14.3px; align-items: start;
}
.info-list li + li { border-top: 1px solid var(--line-2); }
.info-list .k { color: var(--fg-3); }
.info-list .v { color: var(--fg); font-weight: 500; word-break: break-word; }
.info-list .v a:hover { color: #6aa9ff; }

.marks { display: grid; gap: 20px; margin-top: 30px; }
.marks li { display: flex; gap: 16px; align-items: flex-start; }
.marks .dot {
  flex-shrink: 0; width: 42px; height: 42px;
  display: grid; place-items: center; border-radius: 12px;
  background: rgba(238,208,146,.14); color: var(--gold);
  font-weight: 700; font-size: 15px;
}
.sec-light .marks .dot { background: #faf3e3; color: var(--gold-ink); }
.marks b { display: block; font-size: 16px; }
.marks span.d { font-size: 14.3px; color: var(--fg-2); }

.timeline { position: relative; padding-left: 28px; }
.timeline::before {
  content: ""; position: absolute; left: 5px; top: 8px; bottom: 8px;
  width: 1px; background: var(--line);
}
.timeline li { position: relative; padding-bottom: 32px; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: ""; position: absolute; left: -28px; top: 9px;
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--glow);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--blue) 14%, transparent);
}
.timeline .yr { font-size: 13px; font-weight: 700; letter-spacing: .1em; color: #6aa9ff; }
.sec-light .timeline .yr { color: var(--blue-600); }
.timeline h4 { font-size: 17px; margin-top: 6px; }
.timeline p { margin-top: 8px; font-size: 14.4px; color: var(--fg-2); }

.photos { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); gap: 18px; }
.photos figure { margin: 0; }
.photos .ph {
  aspect-ratio: 4 / 3; overflow: hidden;
  border-radius: var(--radius); border: 1px solid var(--line);
}
.photos .ph img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.photos figure:hover .ph img { transform: scale(1.05); }
.photos figcaption { margin-top: 11px; font-size: 13.2px; color: var(--fg-3); text-align: center; }

.cred { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 46px; align-items: center; }
.cred-doc {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--panel); padding: 12px;
}
.cred-doc img { width: 100%; border-radius: 5px; }
.cred-doc figcaption { margin-top: 12px; font-size: 12.6px; color: var(--fg-3); text-align: center; }
.cred-list { display: grid; }
.cred-list > div {
  display: grid; grid-template-columns: 140px 1fr; gap: 16px;
  padding: 14px 0; font-size: 14.8px; align-items: start;
}
.cred-list > div + div { border-top: 1px solid var(--line); }
.cred-list .ck { color: var(--fg-3); }
.cred-list .cv { color: var(--fg); font-weight: 500; }

/* --------------------------------------------------------------------------
   联系我们
   -------------------------------------------------------------------------- */
.contact-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 56px; align-items: start; }
.c-list { display: grid; gap: 20px; margin-top: 30px; }
.c-list li { display: flex; gap: 15px; align-items: flex-start; }
.c-list .ic {
  flex-shrink: 0; width: 44px; height: 44px;
  display: grid; place-items: center; border-radius: 13px;
  background: rgba(43,127,255,.13); color: #6aa9ff;
}
.sec-light .c-list .ic { background: #e8f0ff; color: var(--blue-600); }
.c-list .k { font-size: 12.6px; color: var(--fg-3); }
.c-list .v { font-size: 16.5px; font-weight: 600; }
.c-list .v a:hover { color: #6aa9ff; }
.sec-light .c-list .v a:hover { color: var(--blue-600); }

.map-fig {
  margin: 30px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.map-fig img { width: 100%; }
.map-note {
  margin-top: 16px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--blue);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 18px 22px;
  font-size: 14.3px;
  color: var(--fg-2);
  line-height: 1.8;
}

.qr-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  padding: 30px 26px;
  text-align: center;
}
.qr-card img {
  width: 178px; height: 178px;
  margin: 0 auto 18px;
  border-radius: var(--radius);
  background: #fff;
  padding: 9px;
}
.qr-card b { display: block; font-size: 16.5px; }
.qr-card p { margin-top: 9px; font-size: 14px; color: var(--fg-2); }
.qr-card .btn { margin-top: 20px; width: 100%; }
.qr-card .btn + .btn { margin-top: 10px; }

/* 双码并排：左「企业微信客服」、右「加我企业微信」 */
.qr-duo { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 18px; }
.qr-duo figure { margin: 0; }
.qr-duo img {
  width: 100%; height: auto;
  margin: 0 0 9px;
  border-radius: var(--radius);
  background: #fff;
  padding: 7px;
}
.qr-duo figcaption { font-size: 12.5px; font-weight: 600; color: var(--fg-2); line-height: 1.4; }

/* --------------------------------------------------------------------------
   FAQ
   -------------------------------------------------------------------------- */
.faq { display: grid; gap: 13px; max-width: 880px; }
.faq details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 0 24px;
}
.faq details[open] { border-color: rgba(43,127,255,.34); }
.faq summary {
  cursor: pointer; list-style: none;
  padding: 19px 0;
  font-weight: 600; font-size: 16px;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 22px; font-weight: 400; color: var(--fg-3); }
.faq details[open] summary::after { content: "−"; color: #6aa9ff; }
.faq details p {
  padding: 16px 0 21px;
  border-top: 1px solid var(--line-2);
  font-size: 14.8px;
  color: var(--fg-2);
}

/* --------------------------------------------------------------------------
   旗下品牌：两个品牌平级铺陈（首页 #brands）
   —— 两块共用 .prod / .prod-list / .phone 组件，第二块左右镜像，
      靠强调色而不是版面权重来区分品牌，避免读成「主角 + 附录」
   -------------------------------------------------------------------------- */
.brands-stack { display: grid; gap: 96px; }
.brand-row + .brand-row { padding-top: 96px; border-top: 1px solid var(--line); }

/* 第二块镜像：媒体在左、文案在右 */
.prod.reverse { grid-template-columns: minmax(0, .82fr) minmax(0, 1fr); }
.prod.reverse .brand-copy { order: 2; }
.prod.reverse .phone-wrap { order: 1; }

/* 顺心家用品牌青色替换蓝色强调 */
.brand-sxj .prod-list .tick { background: rgba(24,168,168,.16); color: #17c0b4; }
.sec-light .brand-sxj .prod-list .tick { background: #ddf5f3; color: #0d7373; }
.brand-sxj .phone-wrap .halo { background: radial-gradient(circle, rgba(24,168,168,.30), transparent 68%); }
.brand-sxj .sxj-brand { margin-bottom: 4px; }
.brand-sxj .svc-chips { margin-top: 26px; }

/* 上面这几条与「响应式」一节（约 918 行）里的 1080px 断点选择器同名、
   特异度相同，而媒体查询不增加特异度，靠后者胜出 —— 本区块位于文件末尾，
   会把断点规则整个盖掉，导致移动端仍按两列镜像排版、样机压住文案。
   故在此重新声明一次窄屏行为，务必保持在本区块之后。 */
@media (max-width: 1080px) {
  .prod.reverse { grid-template-columns: minmax(0, 1fr); gap: 48px; }
  /* 单列后取消镜像，与第一块一致：文案在上、样机在下 */
  .prod.reverse .brand-copy,
  .prod.reverse .phone-wrap { order: 0; }
  .brands-stack { gap: 66px; }
  .brand-row + .brand-row { padding-top: 66px; }
}

/* --------------------------------------------------------------------------
   顺心家品牌块（about / solutions 内页的侧栏提及，保持卡片形态）
   -------------------------------------------------------------------------- */
.sxj {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(24,168,168,.3);
  background:
    radial-gradient(620px 320px at 88% 6%, rgba(24,168,168,.24), transparent 64%),
    radial-gradient(420px 280px at 4% 94%, rgba(252,156,48,.14), transparent 66%),
    rgba(255,255,255,.03);
  padding: 46px 46px 44px;
}
.sec-light .sxj { background:
    radial-gradient(620px 320px at 88% 6%, rgba(24,168,168,.14), transparent 64%),
    radial-gradient(420px 280px at 4% 94%, rgba(252,156,48,.12), transparent 66%),
    #fff; }
.sxj-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .8fr); gap: 50px; align-items: center; }
.sxj-brand { display: flex; align-items: center; gap: 13px; }
.sxj-brand img { width: 46px; height: 46px; }
.sxj-brand .bn { display: block; font-size: 22px; font-weight: 800; letter-spacing: .04em; color: #2ec9c4; }
.sec-light .sxj-brand .bn { color: #12908f; }
.sxj-brand .bs { display: block; font-size: 11px; font-weight: 600; letter-spacing: .16em; color: var(--fg-3); line-height: 1.2; }
.sxj h2 { margin-top: 22px; font-size: clamp(24px, 2.9vw, 34px); }
.sxj p { margin-top: 16px; font-size: 16px; color: var(--fg-2); line-height: 1.85; }
.sxj .svc-chips, .brand-sxj .svc-chips { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 24px; }
.sxj .svc-chips span, .brand-sxj .svc-chips span {
  font-size: 13.2px; font-weight: 600;
  padding: 6px 14px; border-radius: 999px;
  color: #2ec9c4; border: 1px solid rgba(24,168,168,.34);
  background: rgba(24,168,168,.08);
}
.sec-light .sxj .svc-chips span,
.sec-light .brand-sxj .svc-chips span { color: #0d7373; background: #eafaf9; border-color: #c9eeec; }
.sxj .acts { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.btn-teal { background: linear-gradient(135deg, #18a8a8, #17c0b4); color: #04302f; box-shadow: 0 12px 30px -12px rgba(24,168,168,.9); }
.btn-teal:hover { transform: translateY(-2px); }
.sxj-media img { width: 100%; border-radius: var(--radius-lg); border: 1px solid var(--line); }

/* --------------------------------------------------------------------------
   内页响应式
   -------------------------------------------------------------------------- */
@media (max-width: 1080px) {
  .feat, .about-grid, .contact-grid, .cred, .sxj-grid { grid-template-columns: minmax(0, 1fr); gap: 42px; }
  .feat.reverse .feat-media { order: 0; }
}
@media (max-width: 900px) {
  .page-hero { padding: calc(var(--nav-h) + 50px) 0 52px; }
  .tri { grid-template-columns: minmax(0, 1fr); }
  .tri > div + div { border-left: 0; border-top: 1px solid var(--line); }
  .sol-head { padding: 20px 22px; }
  .tri > div { padding: 22px; }
  .sxj { padding: 32px 26px; }
}
@media (max-width: 640px) {
  .info-list li { grid-template-columns: 78px 1fr; gap: 12px; }
  .cred-list > div { grid-template-columns: 106px 1fr; gap: 12px; font-size: 14.2px; }
  .spec .rows > div { grid-template-columns: 82px 1fr; gap: 12px; }
}

/* 联系电话：号码本身要醒目，是 contact 页的主要转化入口之一 */
.tel-link {
  font-size: 26px; font-weight: 700; letter-spacing: .5px;
  color: var(--gold); text-decoration: none;
}
.tel-link:hover { text-decoration: underline; }

/* 案例配图：占位期用虚线边框明确标示「此处待替换」，
   换成真图后把 .case-figure img 的 border-style 改成 solid 即可 */
.case-figure { margin: 40px 0 0; }
.case-figure img {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 2px dashed var(--line);
  opacity: .55;
}
.case-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  color: var(--fg-3);
  text-align: center;
}