@font-face { font-family: "Barlow Condensed"; font-style: normal; font-weight: 500; font-display: swap; src: url("public/fonts/BarlowCondensed-500normal.woff2") format("woff2"); }
@font-face { font-family: "Barlow Condensed"; font-style: normal; font-weight: 600; font-display: swap; src: url("public/fonts/BarlowCondensed-600normal.woff2") format("woff2"); }
@font-face { font-family: "Barlow Condensed"; font-style: normal; font-weight: 700; font-display: swap; src: url("public/fonts/BarlowCondensed-700normal.woff2") format("woff2"); }
@font-face { font-family: "Manrope"; font-style: normal; font-weight: 400; font-display: swap; src: url("public/fonts/Manrope-400normal.woff2") format("woff2"); }
@font-face { font-family: "Manrope"; font-style: normal; font-weight: 500; font-display: swap; src: url("public/fonts/Manrope-500normal.woff2") format("woff2"); }
@font-face { font-family: "Manrope"; font-style: normal; font-weight: 600; font-display: swap; src: url("public/fonts/Manrope-600normal.woff2") format("woff2"); }
@font-face { font-family: "Manrope"; font-style: normal; font-weight: 700; font-display: swap; src: url("public/fonts/Manrope-700normal.woff2") format("woff2"); }
@font-face { font-family: "Manrope"; font-style: normal; font-weight: 800; font-display: swap; src: url("public/fonts/Manrope-800normal.woff2") format("woff2"); }

:root {
  --ink: #101619;
  --ink-soft: #263236;
  --muted: #718084;
  --line: #dfe6e5;
  --paper: #f5f7f5;
  --white: #ffffff;
  --signal: #c8f36b;
  --signal-deep: #a6d94d;
  --orange: #f07a35;
  --display: "Barlow Condensed", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --body: "Manrope", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --nav: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Manrope", sans-serif;
  --max: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--body); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
.container { width: min(calc(100% - 96px), var(--max)); margin: 0 auto; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; color: var(--muted); font: 700 11px/1 var(--body); letter-spacing: .16em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 26px; height: 1px; background: currentColor; display: inline-block; }
.eyebrow.light { color: #aab9b9; }

.site-header { position: fixed; z-index: 20; top: 0; left: 0; right: 0; color: var(--white); transition: background .25s ease, color .25s ease, box-shadow .25s ease; }
.site-header.scrolled { color: var(--white); background: rgba(16,22,25,.92); box-shadow: 0 1px 0 rgba(255,255,255,.08); backdrop-filter: blur(14px); }
.nav-wrap { height: 86px; display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-logo { display: block; height: 46px; width: auto; object-fit: contain; transition: opacity .2s ease; }
.footer-brand .brand-logo { height: 52px; }
.brand-badge { display: inline-flex; align-items: center; padding: 0; background: transparent; }
.desktop-nav { display: flex; align-items: center; gap: 42px; margin-left: auto; }
.desktop-nav a { position: relative; font: 500 13px/1 var(--nav); opacity: .78; transition: opacity .2s ease; }
.desktop-nav a:hover, .desktop-nav a.active { opacity: 1; }
.desktop-nav a.active::after { content: ""; position: absolute; left: 0; right: 0; bottom: -12px; height: 2px; background: var(--signal); }
.nav-cta { display: inline-flex; align-items: center; gap: 12px; border: 1px solid rgba(255,255,255,.4); padding: 12px 16px 12px 18px; font: 700 12px/1 var(--nav); transition: .2s ease; }
.nav-cta span, .button span, .text-link span, .solution-content a span { font-size: 17px; line-height: 10px; }
.scrolled .nav-cta { border-color: rgba(255,255,255,.4); }
.nav-cta:hover { background: var(--signal); color: var(--ink); border-color: var(--signal); }
/* 导航「登录」按钮：实心绿底，点击新标签页打开后台登录页 */
.nav-login { display: inline-flex; align-items: center; padding: 12px 18px; background: var(--signal); color: var(--ink); font: 700 12px/1 var(--nav); transition: .2s ease; }
.nav-login:hover { background: var(--white); }
.menu-toggle, .mobile-menu { display: none; }

.hero { min-height: 720px; height: min(100vh, 900px); position: relative; display: flex; align-items: center; overflow: hidden; color: var(--white); background: #1c2527; }
.hero-image { position: absolute; inset: 0; background: url("public/industrial-hero.jpg") center/cover no-repeat; transform: scale(1.02); }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(8,14,15,.83) 0%, rgba(8,14,15,.57) 46%, rgba(8,14,15,.19) 100%), linear-gradient(0deg, rgba(8,14,15,.62) 0%, transparent 30%); }
.hero-content { position: relative; z-index: 1; padding-top: 60px; }
.hero-kicker { display: flex; align-items: center; gap: 13px; color: var(--signal); font: 700 11px/1 var(--body); letter-spacing: .16em; }
.kicker-line { width: 44px; height: 2px; background: var(--signal); }
.hero h1 { margin: 20px 0 16px; max-width: 700px; font: 600 clamp(38px, 4.5vw, 56px)/.94 var(--display); letter-spacing: -.025em; }
.hero h1 em, h2 em { color: var(--signal); font-style: normal; }
.hero-lead { max-width: 505px; color: rgba(255,255,255,.75); font: 400 15px/1.9 var(--nav); }
.hero-actions { display: flex; gap: 13px; margin-top: 34px; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 26px; min-width: 165px; padding: 15px 18px; font: 700 12px/1 var(--nav); transition: .22s ease; }
.button-primary { color: var(--ink); background: var(--signal); }
.button-primary:hover { background: var(--white); transform: translateY(-2px); }
.button-ghost { color: var(--white); border: 1px solid rgba(255,255,255,.42); }
.button-ghost:hover { color: var(--ink); background: var(--white); }
.hero-meta { display: flex; align-items: center; gap: 12px; margin-top: 65px; color: rgba(255,255,255,.49); font: 500 10px/1 var(--nav); letter-spacing: .08em; }
.meta-dot { width: 3px; height: 3px; background: var(--signal); border-radius: 50%; }
.hero-scroll { position: absolute; z-index: 2; bottom: 26px; left: 48px; display: flex; align-items: center; gap: 12px; color: rgba(255,255,255,.55); writing-mode: vertical-rl; font: 700 9px/1 var(--body); letter-spacing: .13em; }
.scroll-line { width: 1px; height: 47px; background: var(--signal); }
.hero-index { position: absolute; right: 48px; bottom: 30px; color: var(--signal); font: 700 11px/1 var(--body); letter-spacing: .18em; }
.hero-index span { color: rgba(255,255,255,.4); margin: 0 8px; }

.trust-strip { border-bottom: 1px solid var(--line); background: var(--white); }
.trust-grid { min-height: 142px; display: grid; grid-template-columns: 1.45fr repeat(3, 1fr); align-items: center; }
.trust-intro { display: flex; align-items: center; gap: 28px; border-right: 1px solid var(--line); }
.trust-intro .eyebrow { align-self: flex-start; margin-top: 4px; }
.trust-intro strong { font: 700 22px/1.28 var(--nav); }
.stat { min-height: 68px; padding: 0 34px; display: flex; flex-direction: column; justify-content: center; border-right: 1px solid var(--line); }
.stat b { color: var(--ink); font: 700 27px/1 var(--display); letter-spacing: .02em; }
.stat span { margin-top: 10px; color: var(--muted); font: 500 11px/1 var(--nav); }
.stat:last-child { border-right: 0; }

.section { padding: 132px 0; }
.about { background: var(--paper); }
.about-grid { display: grid; grid-template-columns: 1.05fr 1.1fr .6fr; gap: 76px; }
.section-heading h2, .solutions-head h2, .services-head h2, .partners h2 { margin: 20px 0 0; font: 600 clamp(34px, 3.5vw, 48px)/.96 var(--display); letter-spacing: -.025em; }
.section-heading h2 em, .solutions-head h2 em, .services-head h2 em { color: var(--orange); }
.heading-rule { width: 58px; height: 3px; margin-top: 37px; background: var(--orange); }
.about-copy { padding-top: 59px; max-width: 495px; }
.about-copy p { margin: 0 0 21px; color: #687477; font: 400 14px/1.95 var(--nav); }
.about-copy .lead-copy { color: var(--ink); font: 700 21px/1.6 var(--nav); }
.text-link { display: inline-flex; align-items: center; gap: 20px; margin-top: 19px; padding-bottom: 9px; border-bottom: 1px solid var(--ink); font: 700 12px/1 var(--nav); }
.text-link:hover { color: var(--orange); border-color: var(--orange); }
.about-aside { align-self: end; justify-self: end; width: 186px; height: 186px; border: 1px solid #d6dfdd; display: flex; flex-direction: column; justify-content: space-between; padding: 20px; color: var(--orange); }
.about-aside span { font: 700 24px/.85 var(--display); letter-spacing: -.02em; }
.about-aside small { color: var(--muted); font: 700 9px/1.45 var(--body); letter-spacing: .12em; }

.section-dark { background: var(--ink); color: var(--white); }
.services { padding-bottom: 139px; }
.services-head { display: flex; justify-content: space-between; align-items: end; gap: 60px; margin-bottom: 69px; }
.services-head h2 { margin-bottom: 0; }
.services-head p { width: 390px; margin: 0; color: #91a0a1; font: 400 13px/1.85 var(--nav); }
.service-list { border-top: 1px solid rgba(255,255,255,.17); }
.service-item { display: grid; grid-template-columns: 64px 68px 1fr 40px; gap: 27px; align-items: center; min-height: 125px; border-bottom: 1px solid rgba(255,255,255,.17); transition: background .2s ease; }
.service-item:hover { background: rgba(255,255,255,.04); }
.service-no { color: #657274; font: 600 12px/1 var(--display); }
.service-icon { width: 50px; height: 50px; display: grid; place-items: center; border: 1px solid rgba(200,243,107,.38); color: var(--signal); }
.service-icon span { font: 400 30px/1 var(--display); }
.service-item h3 { margin: 0 0 8px; font: 700 19px/1 var(--nav); }
.service-item p { max-width: 625px; margin: 0; color: #849394; font: 400 12px/1.7 var(--nav); }
.service-arrow { color: var(--signal); font-size: 21px; text-align: right; transition: transform .2s ease; }
.service-item:hover .service-arrow { transform: translate(3px, -3px); }

.solutions { background: var(--paper); padding-top: 80px; }
.solutions-head { display: grid; grid-template-columns: .75fr 1fr 1fr; align-items: end; gap: 40px; margin-bottom: 65px; }
.solutions-head h2 { margin: 0; }
.solutions-head p { max-width: 325px; margin: 0 0 6px; color: var(--muted); font: 400 13px/1.8 var(--nav); }
.solution-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.solution-card { min-height: 376px; position: relative; overflow: hidden; padding: 26px 30px; background: var(--white); border: 1px solid var(--line); }
.solution-wide { grid-column: span 2; min-height: 316px; background: #dfead9; }
.solution-index { position: absolute; top: 29px; right: 30px; color: #93a09e; font: 700 10px/1 var(--body); letter-spacing: .13em; }
.solution-content { position: relative; z-index: 2; width: 55%; }
.solution-wide .solution-content { width: 43%; }
.card-label { display: block; margin-bottom: 30px; color: #7b8884; font: 700 9px/1 var(--body); letter-spacing: .17em; }
.solution-card h3 { margin: 0 0 14px; font: 700 32px/1 var(--nav); }
.solution-card p { margin: 0; color: #657273; font: 400 13px/1.8 var(--nav); }
.solution-content a { display: inline-flex; align-items: center; gap: 16px; margin-top: 27px; font: 700 11px/1 var(--nav); }
.solution-content a:hover { color: var(--orange); }
.card-graphic { position: absolute; right: 55px; bottom: -75px; width: 340px; height: 340px; border: 1px solid rgba(100,123,107,.26); border-radius: 50%; }
.graphic-ring { position: absolute; border: 1px solid rgba(100,123,107,.29); border-radius: 50%; }
.ring-one { inset: 43px; }.ring-two { inset: 91px; }
.graphic-core { position: absolute; inset: 140px; background: var(--orange); border-radius: 50%; box-shadow: 0 0 0 9px rgba(240,122,53,.14); }
.graphic-node { position: absolute; width: 9px; height: 9px; background: var(--ink); border: 3px solid #dfead9; border-radius: 50%; }
.node-a { top: 49px; left: 140px; }.node-b { top: 148px; left: 34px; }.node-c { bottom: 52px; right: 65px; }
.iot-graphic { position: absolute; right: 28px; bottom: 29px; width: 125px; height: 158px; border: 1px solid #b8c7c3; display: flex; flex-direction: column; justify-content: end; padding: 15px; }
.iot-graphic::before, .iot-graphic::after { content: ""; position: absolute; background: var(--orange); }
.iot-graphic::before { width: 50px; height: 1px; top: 50px; right: -30px; }.iot-graphic::after { width: 1px; height: 80px; top: -50px; right: 36px; }
.iot-bars { display: flex; align-items: end; gap: 7px; height: 73px; border-bottom: 1px solid #93a09e; }
.iot-bars i { width: 11px; background: var(--orange); }.iot-bars i:nth-child(1) { height: 24%; opacity: .45; }.iot-bars i:nth-child(2) { height: 40%; opacity: .62; }.iot-bars i:nth-child(3) { height: 61%; opacity: .72; }.iot-bars i:nth-child(4) { height: 87%; }.iot-bars i:nth-child(5) { height: 58%; opacity: .72; }
.iot-graphic span { margin-top: 11px; color: #899693; font: 700 8px/1.3 var(--body); letter-spacing: .12em; }
.phone-graphic { position: absolute; right: 54px; bottom: 26px; width: 108px; height: 185px; padding: 7px; border: 2px solid var(--ink); border-radius: 18px; transform: rotate(8deg); background: #e3ede7; }
.phone-screen { position: relative; height: 100%; padding: 17px 10px 10px; background: var(--ink); border-radius: 12px; overflow: hidden; }
.phone-screen::before { content: ""; position: absolute; top: 7px; left: 38px; width: 28px; height: 4px; border-radius: 3px; background: #455356; }
.phone-screen span { display: block; width: 41px; height: 41px; margin-bottom: 14px; background: var(--signal); border-radius: 50%; }.phone-screen b { display: block; width: 50px; height: 6px; margin-bottom: 15px; background: var(--white); }.phone-screen i { display: block; height: 19px; margin: 7px 0; border: 1px solid #435153; background: linear-gradient(90deg, var(--orange) 44%, transparent 44%); }

.section-light { background: #e7ede9; }
.partners-head { display: grid; grid-template-columns: .85fr 1.15fr; gap: 60px; align-items: end; margin-bottom: 58px; }
.partners-head > p { max-width: 500px; margin: 0 0 8px; color: #667475; font: 400 14px/1.9 var(--nav); }
.brand-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.brand-card { position: relative; min-height: 156px; padding: 22px 20px; display: flex; flex-direction: column; justify-content: flex-end; background: var(--white); border: 1px solid #d5dedb; transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease; }
.brand-card:hover { transform: translateY(-4px); border-color: var(--orange); box-shadow: 0 18px 34px -22px rgba(16,22,25,.45); }
.brand-cat { position: absolute; top: 18px; left: 20px; color: #93a09e; font: 700 9px/1.3 var(--body); letter-spacing: .08em; }
.brand-card .bl { color: #1b282b; font: 800 27px/1 var(--body); letter-spacing: -.04em; }
.brand-card .bl-zk, .brand-card .bl-dm { font-family: var(--nav); font-size: 24px; letter-spacing: .04em; }
.brand-card .bl-dm i { font-style: normal; font-family: var(--body); font-size: 14px; letter-spacing: 0; color: var(--orange); margin-left: 4px; vertical-align: 2px; }
.brand-card .bl-ceri { color: var(--orange); letter-spacing: .04em; }
.brand-card small { display: block; margin-top: 9px; color: #7b8886; font: 600 10px/1.3 var(--nav); letter-spacing: .02em; }

.contact { padding: 0; background: var(--ink); color: var(--white); }
.contact-grid { display: grid; grid-template-columns: 1.2fr .8fr; max-width: 1440px; margin: 0 auto; }
.contact-main { padding: 132px max(48px, calc((100vw - var(--max)) / 2)) 132px; padding-right: 100px; background: #182124; }
.contact-main h2 { margin: 22px 0 18px; font: 600 clamp(36px, 3.8vw, 48px)/.94 var(--display); letter-spacing: -.025em; }.contact-main h2 em { color: var(--signal); font-style: normal; }.contact-main p { max-width: 390px; margin: 0 0 35px; color: #94a4a4; font: 400 14px/1.8 var(--nav); }
.contact-side { padding: 48px 72px 55px; background: var(--orange); color: var(--ink); }
.contact-label { margin-bottom: 65px; font: 700 10px/1 var(--body); letter-spacing: .16em; }.contact-block { margin-bottom: 31px; }.contact-block span { display: block; margin-bottom: 9px; font: 700 10px/1 var(--nav); letter-spacing: .1em; opacity: .66; }.contact-block a { display: block; font: 700 22px/1.2 var(--body); }.contact-block p { margin: 0; font: 700 16px/1.4 var(--nav); }.contact-block small { display: block; margin-top: 7px; font: 500 10px/1.4 var(--nav); opacity: .62; }
.site-footer { background: var(--ink); color: var(--white); border-top: 1px solid rgba(255,255,255,.13); }.footer-wrap { min-height: 130px; display: grid; grid-template-columns: 1fr 1fr 1fr; align-items: center; gap: 30px; }.footer-note { color: #728082; font: 700 10px/1.5 var(--body); letter-spacing: .15em; text-align: center; }.footer-copy { color: #728082; font: 500 10px/1.7 var(--nav); text-align: right; }.footer-copy a { color: #aab7b5; }.footer-copy a:hover { color: var(--signal); }

/* ============================================================
   客户案例板块（后台管理系统动态渲染，深色底）
   视觉语言与代理品牌板块保持一致：白卡片 + hover 上浮 + 橙色描边
   ============================================================ */
.cases { padding-bottom: 132px; }
.cases-head { display: grid; grid-template-columns: .85fr 1.15fr; gap: 60px; align-items: end; margin-bottom: 58px; }
.cases-head h2 { margin: 0; color: var(--white); }
.cases-head h2 em { color: var(--signal); font-style: normal; }
.cases-head > p { max-width: 500px; margin: 0 0 8px; color: #91a0a1; font: 400 14px/1.9 var(--nav); }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.case-card { position: relative; display: flex; flex-direction: column; background: var(--white); border: 1px solid #d5dedb; overflow: hidden; transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease; }
.case-card:hover { transform: translateY(-4px); border-color: var(--orange); box-shadow: 0 18px 34px -22px rgba(16,22,25,.45); }
.case-image { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: #e7ede9; }
.case-image img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .35s ease; }
.case-card:hover .case-image img { transform: scale(1.04); }
.case-image-empty { display: grid; place-items: center; }
.case-image-empty span { color: #7b8886; font: 700 12px/1 var(--nav); letter-spacing: .08em; }
.case-body { display: flex; flex-direction: column; align-items: flex-start; padding: 20px 20px 22px; }
.case-cat { display: inline-block; margin-bottom: 10px; color: var(--orange); font: 700 9px/1.3 var(--body); letter-spacing: .08em; }
.case-body h3 { margin: 0 0 8px; color: #1b282b; font: 700 19px/1.2 var(--nav); }
.case-body p { margin: 0; color: #657273; font: 400 12px/1.7 var(--nav); }
.case-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 16px; font: 700 11px/1 var(--nav); color: #1b282b; }
.case-link:hover { color: var(--orange); }
.fallback-note { grid-column: 1 / -1; padding: 46px 0; text-align: center; color: #7b8886; font: 400 13px/1.8 var(--nav); }
/* 品牌 logo 图（后台可上传，替代纯文字渲染） */
.brand-logo-img { max-height: 42px; width: auto; max-width: 100%; object-fit: contain; margin-bottom: 4px; }

@media (max-width: 900px) {
  .container { width: min(calc(100% - 48px), var(--max)); }
  .desktop-nav, .nav-cta { display: none; }.menu-toggle { display: flex; width: 42px; height: 42px; flex-direction: column; justify-content: center; align-items: center; gap: 6px; border: 1px solid rgba(255,255,255,.35); background: transparent; color: inherit; cursor: pointer; }.menu-toggle span { display: block; width: 17px; height: 1px; background: currentColor; transition: transform .2s ease; }.site-header.scrolled .menu-toggle { border-color: rgba(255,255,255,.35); }.mobile-menu { display: flex; max-height: 0; overflow: hidden; flex-direction: column; gap: 20px; padding: 0 24px; background: rgba(16,22,25,.96); color: var(--white); transition: max-height .3s ease, padding .3s ease; }.mobile-menu.open { max-height: 380px; padding: 22px 24px 28px; }.mobile-menu a { font: 500 14px/1 var(--nav); }
  .hero { height: 760px; }.hero-scroll { left: 24px; }.hero-index { right: 24px; }.hero-content { padding-top: 80px; }.hero h1 { font-size: clamp(38px, 8vw, 48px); }.hero-lead { max-width: 460px; }
  .trust-grid { grid-template-columns: 1.1fr 1fr 1fr; grid-template-rows: 1fr 1fr; padding: 23px 0; }.trust-intro { grid-row: span 2; }.stat:nth-child(3) { border-right: 0; }.stat { padding: 0 20px; }
  .about-grid { grid-template-columns: 1fr 1fr; gap: 30px 60px; }.about-aside { grid-column: 2; }.about-copy { padding-top: 30px; }
  .services-head, .solutions-head { display: block; }.services-head p { margin-top: 28px; }.solutions-head p { margin-top: 25px; }.service-item { grid-template-columns: 42px 58px 1fr 25px; gap: 16px; }
  .cases-head { grid-template-columns: 1fr; gap: 24px; }.case-grid { grid-template-columns: repeat(2, 1fr); }
  .partners-head { grid-template-columns: 1fr; gap: 24px; }.brand-grid { grid-template-columns: repeat(3, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }.contact-main { padding: 100px 24px; }.contact-side { padding: 50px 24px 45px; }.footer-wrap { grid-template-columns: 1fr 1fr; padding: 28px 0; }.footer-note { display: none; }.footer-copy { text-align: right; }
}

@media (max-width: 560px) {
  .container { width: calc(100% - 40px); }.nav-wrap { height: 74px; }.brand-text strong { font-size: 17px; }.hero { min-height: 690px; height: 100svh; }.hero-image { background-position: 61% center; }.hero-overlay { background: linear-gradient(90deg, rgba(8,14,15,.86), rgba(8,14,15,.4)), linear-gradient(0deg, rgba(8,14,15,.78), transparent 52%); }.hero-kicker { font-size: 9px; letter-spacing: .1em; }.kicker-line { width: 28px; }.hero-content { padding-top: 44px; }.hero h1 { margin-top: 20px; font-size: clamp(34px, 11vw, 44px); }.hero-lead { font-size: 13px; line-height: 1.8; }.hero-actions { align-items: stretch; flex-direction: column; width: 176px; gap: 10px; }.button { width: 176px; min-width: 0; padding: 14px 15px; }.hero-meta { margin-top: 36px; font-size: 8px; gap: 7px; }.hero-scroll { display: none; }.hero-index { bottom: 22px; right: 20px; }
  .trust-grid { display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: auto auto auto; gap: 0; padding: 0; }.trust-intro { grid-column: span 2; grid-row: auto; align-items: start; gap: 15px; padding: 24px 0; border-right: 0; border-bottom: 1px solid var(--line); }.trust-intro .eyebrow { font-size: 9px; margin-top: 4px; }.trust-intro strong { font-size: 19px; }.stat { min-height: 83px; padding: 18px 13px 18px 0; border-right: 0; border-bottom: 1px solid var(--line); }.stat:nth-child(3) { padding-left: 13px; border-left: 1px solid var(--line); }.stat b { font-size: 23px; }.stat span { font-size: 10px; }
  .section { padding: 86px 0; }.about-grid { display: block; }.section-heading h2, .solutions-head h2, .services-head h2, .partners h2 { font-size: 36px; }.about-copy { padding-top: 42px; }.about-copy .lead-copy { font-size: 19px; }.about-aside { margin-top: 54px; width: 145px; height: 145px; }.about-aside span { font-size: 20px; }
  .services { padding-bottom: 90px; }.services-head { margin-bottom: 40px; }.services-head p { width: auto; font-size: 12px; }.service-item { grid-template-columns: 28px 48px 1fr; gap: 10px; min-height: 145px; }.service-no { font-size: 11px; }.service-icon { width: 42px; height: 42px; }.service-item h3 { font-size: 16px; }.service-item p { font-size: 11px; line-height: 1.65; }.service-arrow { display: none; }
  .solutions { padding-top: 50px; } .solutions-head { margin-bottom: 42px; }.solution-grid { display: block; }.solution-card, .solution-wide { min-height: 340px; margin-bottom: 14px; padding: 24px 22px; }.solution-wide .solution-content, .solution-content { width: 70%; }.solution-card h3 { font-size: 28px; }.card-graphic { right: -40px; width: 290px; height: 290px; }.iot-graphic { right: 22px; }.phone-graphic { right: 28px; }
  .cases { padding-bottom: 90px; }.cases-head { margin-bottom: 40px; }.cases-head > p { font-size: 12px; }.case-grid { grid-template-columns: 1fr; gap: 12px; }.case-body { padding: 17px 16px 19px; }.case-body h3 { font-size: 17px; }
  .brand-grid { grid-template-columns: 1fr 1fr; gap: 12px; }.brand-card { min-height: 132px; padding: 20px 16px; }.brand-card .bl { font-size: 23px; }.brand-card .bl-zk, .brand-card .bl-dm { font-size: 21px; }.partners-head > p { font-size: 13px; }.contact-main h2 { font-size: 42px; }.footer-wrap { display: flex; align-items: flex-start; flex-direction: column; gap: 20px; }.footer-copy { text-align: left; }
}

/* ============================================================
 * 「客户案例」导航下拉框（桌面端）
 * ============================================================ */
.nav-item { position: relative; }
.has-dropdown { display: flex; align-items: center; }
.nav-trigger { display: inline-flex; align-items: center; gap: 7px; }
.nav-caret { font-size: 10px; opacity: .7; transition: transform .2s ease; }
.has-dropdown.open .nav-caret { transform: rotate(180deg); }
/* 下拉面板：深色浮层，贴合 header 风格 */
.dropdown { position: absolute; top: calc(100% + 18px); left: 50%; transform: translateX(-50%); width: 340px; padding: 22px 0 8px; background: rgba(16,22,25,.97); border: 1px solid rgba(255,255,255,.12); box-shadow: 0 24px 48px -18px rgba(0,0,0,.55); backdrop-filter: blur(14px); opacity: 0; visibility: hidden; transition: opacity .18s ease, transform .18s ease, visibility .18s; }
.has-dropdown.open .dropdown { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(2px); }
.dropdown-title { margin: 0 22px 10px; color: #8fa0a0; font: 700 9px/1 var(--body); letter-spacing: .18em; text-transform: uppercase; }
.dropdown-list { display: flex; flex-direction: column; }
.dropdown-item { display: grid; grid-template-columns: 6px 1fr auto; align-items: center; gap: 12px; padding: 13px 22px; border-left: 2px solid transparent; color: rgba(255,255,255,.82); transition: background .16s ease, border-color .16s ease; }
.dropdown-item:hover { background: rgba(200,243,107,.07); border-left-color: var(--signal); color: var(--white); }
.dropdown-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--signal); opacity: .85; }
.dropdown-name { font: 500 13px/1.35 var(--nav); }
.dropdown-ind { color: #8fa0a0; font: 500 10px/1 var(--nav); white-space: nowrap; }
.dropdown-all { display: flex; justify-content: space-between; align-items: center; margin: 8px 0 0; padding: 13px 22px; border-top: 1px solid rgba(255,255,255,.1); color: var(--signal); font: 700 11px/1 var(--nav); transition: background .16s ease; }
.dropdown-all:hover { background: rgba(200,243,107,.08); }
.dropdown-loading, .dropdown-empty { margin: 0; padding: 16px 22px 20px; color: #8fa0a0; font: 400 12px/1.6 var(--nav); }

/* ============================================================
 * cases.html 列表页：页面标题区
 * ============================================================ */
.page-hero { padding: 168px 0 84px; color: var(--white); background: #1c2527; }
.page-hero h1 { margin: 14px 0 12px; font: 600 clamp(38px, 4.5vw, 54px)/.94 var(--display); letter-spacing: -.02em; }
.page-hero h1 em { color: var(--signal); font-style: normal; }
.page-hero p { max-width: 560px; margin: 0; color: rgba(255,255,255,.72); font: 400 14px/1.9 var(--nav); }

/* 列表页：整卡可点击（a 标签包整卡，去掉下划线继承） */
.case-card-link { color: inherit; cursor: pointer; }
.case-card-link .case-link { margin-top: 14px; }

/* ============================================================
 * case.html 详情页
 * ============================================================ */
/* 顶部深色标题区：复用 page-hero 的 #1c2527 底色，标题/摘要由 JS 动态渲染，内容居中 */
.case-hero { padding: 168px 0 64px; }
/* 标题区内容与下方正文文字左对齐（跟随容器左边缘，不贴页面最左） */
.case-hero-inner { width: min(100%, 760px); margin: 0; }
.case-hero .case-detail-back { margin: 0 0 26px; color: #aab9b9; border-bottom-color: rgba(255,255,255,.35); }
.case-hero .case-detail-back:hover { color: var(--signal); border-color: var(--signal); }
.case-hero h1 { margin: 16px 0 14px; }
.case-hero-summary { max-width: 560px; margin: 0; color: rgba(255,255,255,.72); font: 400 14px/1.9 var(--nav); }
/* 正文区：白色卡片放在浅色纸底上，与列表页一致 */
.case-detail { padding: 96px 0 132px; }
.case-detail-card { max-width: 860px; padding: clamp(28px, 5vw, 64px); background: var(--white); border: 1px solid #d5dedb; }
.case-detail-card .case-link { margin-bottom: 8px; }
.case-detail-cover { margin: 26px 0 30px; aspect-ratio: 16 / 9; overflow: hidden; background: #e7ede9; }
.case-detail-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.case-detail-content { color: #33403f; font: 400 15px/2 var(--nav); }
.case-detail-content p { margin: 0 0 18px; }
.case-detail-content h2, .case-detail-content h3, .case-detail-content h4 { margin: 34px 0 14px; color: #162022; font-family: var(--nav); line-height: 1.35; }
.case-detail-content h2 { font-size: 24px; }
.case-detail-content h3 { font-size: 20px; }
.case-detail-content h4 { font-size: 17px; }
.case-detail-content ul, .case-detail-content ol { margin: 0 0 18px; padding-left: 22px; }
.case-detail-content li { margin: 6px 0; }
.case-detail-content blockquote { margin: 0 0 18px; padding: 14px 20px; border-left: 3px solid var(--signal-deep); background: #f2f6ee; color: #4c5c5b; }
.case-detail-content a { color: #2f6b2f; text-decoration: underline; }
.case-detail-content img { max-width: 100%; height: auto; display: block; margin: 24px auto; }
.case-detail-content strong, .case-detail-content b { font-weight: 700; }
.case-detail-content em, .case-detail-content i { font-style: italic; }
.case-detail-content s { text-decoration: line-through; }

@media (max-width: 900px) {
  .dropdown { display: none; } /* 移动端菜单直接链接 cases.html，不显示下拉 */
  .page-hero { padding: 128px 0 60px; }
  .case-hero { padding: 128px 0 48px; }
  .case-detail { padding: 64px 0 100px; }
}