/* ============================================================
   炫风商务官网 · 首页样式
   深蓝 #102b46 / 白 / 明亮蓝 #2468ee / 薄荷绿 #27ad99
   ============================================================ */
:root{
  --navy:#102b46;
  --navy-deep:#0b2138;
  --ink:#152e47;
  --blue:#2468ee;
  --mint:#27ad99;
  --mint-soft:#8be5d1;
  --muted:#687988;
  --muted-light:#9db4c8;
  --line:#dce4ea;
  --paper:#f4f7fa;
  --white:#ffffff;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;color:var(--ink);
  font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;
  -webkit-font-smoothing:antialiased;
  background:var(--white);
}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
a,button{-webkit-tap-highlight-color:transparent}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:4px}
h1,h2,h3,p,ul,figure{margin:0}
ul{padding:0;list-style:none}
img,video{max-width:100%}
.wrap{max-width:1240px;margin:auto;padding-left:32px;padding-right:32px}
.pc-only{display:inline}
.skip{position:fixed;top:-70px;left:12px;background:#fff;color:var(--navy);padding:12px 18px;z-index:100;border-radius:8px;box-shadow:0 8px 24px rgba(16,43,70,.18);transition:top .2s}
.skip:focus{top:10px}
.ext{font-size:.85em;margin-left:5px}
.arr{margin-left:6px}

/* ---------- 顶部导航 ---------- */
.header{position:sticky;top:0;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line);z-index:50}
.nav{height:88px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;gap:12px;align-items:center;flex-shrink:0}
.mark{display:grid;place-items:center;background:var(--navy);color:#fff;border-radius:12px;width:44px;height:44px;font-size:22px;font-weight:700;flex-shrink:0}
.brand-text b{display:block;font-size:20px;letter-spacing:2px;color:var(--navy)}
.brand-text small{display:block;font-size:9px;letter-spacing:1.8px;margin-top:4px;color:var(--muted)}
nav{display:flex;align-items:center;gap:30px;font-size:14.5px;color:var(--ink)}
nav a{padding:6px 2px;transition:color .15s}
nav a:hover,.inline-link:hover{color:var(--blue)}
.nav-contact{padding:11px 20px;border:1.5px solid var(--navy);border-radius:8px;color:var(--navy);font-weight:700;transition:background .15s,color .15s}
.nav-contact:hover{background:var(--navy);color:#fff}
.menu-toggle{display:none}

/* ---------- 按钮 ---------- */
.button{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-size:14px;font-weight:700;padding:15px 26px;border-radius:8px;border:0;transition:transform .15s,box-shadow .15s,background .15s}
.button.primary{background:var(--blue);color:#fff;box-shadow:0 10px 24px rgba(36,104,238,.28)}
.button.primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(36,104,238,.34)}
.button.ghost{background:transparent;color:var(--navy);border:1.5px solid var(--line)}
.button.ghost:hover{border-color:var(--navy)}
.button.mint{background:var(--mint-soft);color:var(--navy-deep)}
.button.mint:hover{transform:translateY(-2px)}
.inline-link{display:inline-flex;align-items:center;gap:8px;font-weight:700;color:var(--blue);font-size:14.5px}

/* ---------- 通用版块 ---------- */
.section{padding-top:96px;padding-bottom:96px}
.eyebrow{font-size:12px;letter-spacing:1.6px;color:#53718e;font-weight:700;display:flex;gap:9px;align-items:center;margin-bottom:22px}
.eyebrow.light{color:var(--mint-soft)}
.dot{width:7px;height:7px;background:var(--mint);border-radius:50%;flex-shrink:0}
h1{font-size:54px;line-height:1.24;letter-spacing:-1.5px;font-weight:800;color:var(--navy)}
h1 em{font-style:normal;color:var(--blue)}
h2{font-size:38px;line-height:1.32;letter-spacing:-.5px;font-weight:800;color:var(--navy)}
.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:52px}
.heading-note{font-size:14px;line-height:1.9;color:var(--muted);text-align:right}

/* ---------- 首屏 ---------- */
.hero{background:linear-gradient(118deg,#f5f8fb 0%,#ffffff 58%,#eef6fb 100%);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.06fr 1fr;gap:56px;align-items:center;padding-top:72px;padding-bottom:72px}
.intro{margin-top:26px;font-size:16px;line-height:1.95;color:var(--muted)}
.actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.hero-proof{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:38px;font-size:13px;color:#4a637d;font-weight:700}
.hero-proof li{display:flex;align-items:center;gap:8px}
.hero-proof li::before{content:"✓";color:var(--mint);font-weight:800}

/* 首屏插画（卡片与便签按文档流排列，避免相互遮挡） */
.hero-art{position:relative;padding-top:32px}
.art-top{position:absolute;top:0;left:6px;right:6px;display:flex;justify-content:space-between;gap:12px}
.art-bottom{position:relative;display:flex;justify-content:space-between;gap:12px;margin-top:18px;left:0;right:0}
.art-top,.art-bottom{font-size:10px;letter-spacing:2px;color:var(--muted-light);font-weight:700}
.art-ring{position:absolute;border-radius:50%;border:1.5px dashed #c6d7e4;z-index:0}
.ring-one{width:330px;height:330px;right:24px;top:70px}
.ring-two{width:420px;height:420px;right:-40px;top:24px;border-color:#dde8f0}
.report-card{position:relative;z-index:1;width:340px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:0 26px 60px rgba(16,43,70,.14)}
.report-head{display:flex;align-items:center;gap:11px}
.mini-mark{display:grid;place-items:center;background:var(--navy);color:#fff;border-radius:9px;width:34px;height:34px;font-size:16px;font-weight:700;flex-shrink:0}
.report-name{font-size:13.5px;font-weight:800;color:var(--navy);line-height:1.35}
.report-name small{display:block;font-size:10px;color:var(--muted);font-weight:400;margin-top:2px}
.report-arrow{margin-left:auto;color:var(--mint);font-weight:800}
.report-title{margin-top:20px;font-size:23px;line-height:1.4;font-weight:800;color:var(--navy)}
.report-tags{display:flex;gap:8px;margin-top:16px}
.report-tags span{font-size:11px;color:#4a637d;background:var(--paper);border:1px solid var(--line);border-radius:999px;padding:5px 11px}
.chart{display:flex;align-items:flex-end;gap:7px;height:76px;margin-top:20px}
.chart i{flex:1;border-radius:5px 5px 2px 2px;background:linear-gradient(180deg,#3f80f2,#2468ee)}
.chart i:nth-child(2n){background:linear-gradient(180deg,#43c3ae,#27ad99);opacity:.85}
.chart i:nth-child(1){height:38%}.chart i:nth-child(2){height:62%}.chart i:nth-child(3){height:48%}
.chart i:nth-child(4){height:82%}.chart i:nth-child(5){height:58%}.chart i:nth-child(6){height:94%}
.chart i:nth-child(7){height:66%}.chart i:nth-child(8){height:44%}.chart i:nth-child(9){height:76%}
.report-foot{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:18px;padding-top:15px;border-top:1px dashed var(--line)}
.report-foot span{font-size:11px;font-weight:700;color:var(--navy)}
.report-foot small{font-size:9.5px;color:var(--muted-light)}
.floating-note{position:relative;z-index:2;width:max-content;max-width:100%;display:flex;gap:10px;align-items:center;margin:-14px 14px 0 auto;background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 16px;box-shadow:0 14px 34px rgba(16,43,70,.13)}
.floating-note>span{display:grid;place-items:center;width:26px;height:26px;border-radius:50%;background:var(--mint-soft);color:var(--navy-deep);font-weight:800;font-size:13px;flex-shrink:0}
.floating-note div{font-size:12px;font-weight:700;color:var(--navy);line-height:1.4}
.floating-note small{display:block;font-size:10px;color:var(--muted);font-weight:400}

/* ---------- 服务横条 ---------- */
.service-strip{background:var(--navy);color:#fff}
.service-strip>.wrap{display:flex;align-items:center;justify-content:space-between;gap:22px;padding-top:17px;padding-bottom:17px}
.service-strip span{font-size:12.5px;color:var(--muted-light);letter-spacing:1px;flex-shrink:0}
.service-strip b{font-size:13.5px;font-weight:700;letter-spacing:1px}

/* ---------- 服务卡片 ---------- */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.service-card{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px 28px;transition:transform .18s,box-shadow .18s,border-color .18s}
.service-card:hover{transform:translateY(-5px);box-shadow:0 20px 44px rgba(16,43,70,.12);border-color:#bfe3da}
.service-icon{display:grid;place-items:center;width:48px;height:48px;border-radius:12px;background:var(--paper);border:1px solid var(--line);color:var(--navy);font-size:19px;font-weight:800}
.card-num{position:absolute;right:26px;top:30px;font-size:11px;font-weight:800;letter-spacing:1px;color:var(--muted-light)}
.service-card h3{margin-top:22px;font-size:21px;color:var(--navy);letter-spacing:.5px}
.service-card p{margin-top:12px;font-size:13.5px;line-height:1.85;color:var(--muted)}
.card-bottom{margin-top:auto;padding-top:20px;font-size:11.5px;letter-spacing:.4px;color:#4a637d;font-weight:700}
.service-card.featured{background:var(--navy);border-color:var(--navy)}
.service-card.featured .service-icon{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16);color:var(--mint-soft)}
.service-card.featured .card-num{color:var(--mint-soft)}
.service-card.featured h3{color:#fff}
.service-card.featured p{color:#b9cbdc}
.service-card.featured .card-bottom{color:var(--mint-soft)}
.service-card.featured:hover{box-shadow:0 22px 48px rgba(16,43,70,.3)}

/* ---------- 炫风数据报告（深蓝版块） ---------- */
.diagnosis{background:linear-gradient(150deg,var(--navy-deep),var(--navy) 62%);color:#fff;padding:100px 0}
.diagnosis-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.diagnosis h2{color:#fff}
.muted-light{margin-top:24px;font-size:14.5px;line-height:2;color:#a9c0d4}
.diagnosis-copy .button{margin-top:34px}
.disclaimer{margin-top:20px;font-size:11.5px;line-height:1.8;color:#7e97ad}
.diagnosis-steps{display:flex;flex-direction:column}
.diagnosis-steps>div{display:flex;gap:22px;align-items:flex-start;padding:26px 0;border-bottom:1px solid rgba(255,255,255,.12)}
.diagnosis-steps>div:first-child{padding-top:4px}
.diagnosis-steps>div:last-child{border-bottom:0;padding-bottom:4px}
.diagnosis-steps span{font-size:13px;font-weight:800;color:var(--mint-soft);letter-spacing:1px;padding-top:3px}
.diagnosis-steps h3{font-size:17.5px;color:#fff}
.diagnosis-steps p{margin-top:8px;font-size:13px;line-height:1.8;color:#a9c0d4}
.diagnosis-steps b{margin-left:auto;color:rgba(255,255,255,.28);font-weight:400}

/* ---------- AI 办公提效 ---------- */
.ai-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:64px;align-items:center}
.ai-visual{background:linear-gradient(160deg,var(--navy),#1a3d61);border-radius:20px;padding:40px;color:#fff;min-height:380px;display:flex;flex-direction:column}
.ai-symbol{margin-top:26px;font-size:74px;font-weight:800;letter-spacing:-2px;line-height:1}
.ai-symbol i{font-style:normal;color:var(--mint-soft);font-size:44px;vertical-align:super;margin-left:6px}
.workflow-pills{display:flex;align-items:center;flex-wrap:wrap;gap:9px;margin-top:auto}
.workflow-pills span{font-size:12px;border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.06);border-radius:999px;padding:9px 14px}
.workflow-pills b{color:var(--mint-soft);font-weight:400}
.ai-visual>p{margin-top:22px;font-size:13px;color:#a9c0d4}
.ai-lead{margin-top:24px;font-size:14.5px;line-height:2;color:var(--muted)}
.ai-list{margin-top:28px;display:flex;flex-direction:column}
.ai-list li{display:flex;gap:18px;align-items:baseline;padding:16px 0;border-top:1px solid var(--line)}
.ai-list span{font-size:12px;font-weight:800;color:var(--mint);letter-spacing:1px}
.ai-list b{font-size:16px;color:var(--navy)}
.ai-list small{display:block;margin-top:4px;font-size:12px;color:var(--muted)}
.ai-copy .inline-link{margin-top:28px}

/* ---------- 关于炫风 ---------- */
.about{background:var(--paper)}
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.process article{background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px 26px}
.process span{font-size:13px;font-weight:800;color:var(--mint);letter-spacing:1px}
.process h3{margin-top:16px;font-size:18px;color:var(--navy)}
.process p{margin-top:10px;font-size:13px;line-height:1.8;color:var(--muted)}
.about-points{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:20px}
.about-points div{display:flex;flex-direction:column;gap:8px;background:var(--navy);border-radius:16px;padding:24px 26px}
.about-points b{font-size:16px;color:#fff}
.about-points span{font-size:12.5px;color:#a9c0d4;line-height:1.7}

/* ---------- 品牌视频 ---------- */
.film{background:var(--navy-deep);color:#fff}
.film h2{color:#fff}
.film-head{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:44px}
.film-note{font-size:13.5px;line-height:1.95;color:#a9c0d4;text-align:right}
.film-frame{margin:0;background:#000;border-radius:18px;overflow:hidden;border:1px solid rgba(255,255,255,.14);box-shadow:0 30px 70px rgba(0,0,0,.4)}
.film-frame video{display:block;width:100%;aspect-ratio:16/9;background:#000}
.film-frame figcaption{padding:14px 22px;font-size:12px;letter-spacing:1.5px;color:#7e97ad;background:rgba(255,255,255,.04)}

/* ---------- 联系方式 ---------- */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;padding-top:100px;padding-bottom:100px}
.contact-lead{margin-top:24px;font-size:14.5px;line-height:2;color:var(--muted)}
.contact-panel{background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:44px 42px}
.contact-label{font-size:11.5px;font-weight:800;letter-spacing:2px;color:var(--mint)}
.contact-panel h3{margin-top:14px;font-size:34px;color:var(--navy);letter-spacing:2px}
.contact-panel>p{margin-top:12px;font-size:13.5px;line-height:1.9;color:var(--muted)}
.contact-panel .button{margin-top:26px;width:100%}
.copy-status{min-height:22px;margin-top:14px;font-size:13px;font-weight:700;color:var(--mint)}
.contact-panel .inline-link{margin-top:10px}

/* ---------- 页脚 ---------- */
footer{background:var(--navy-deep);color:#fff;padding:52px 0 30px}
.footer-grid{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-bottom:28px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-tag{font-size:12.5px;color:#a9c0d4;letter-spacing:1px}
.beian{font-size:12px;color:#a9c0d4}
.beian:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;padding-top:24px;font-size:11.5px;color:#7e97ad}

/* ---------- 入场动效（渐进增强，JS 失效不影响显示） ---------- */
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.js .reveal.in{opacity:1;transform:none}

/* ============================================================
   响应式
   ============================================================ */
@media(max-width:1180px){
  nav{gap:22px}
  .hero-grid{gap:38px}
  h1{font-size:46px}
  h2{font-size:34px}
  .hero-art{padding-top:28px}
  .report-card{width:312px}
  .service-grid{gap:16px}
  .service-card{padding:26px 22px}
}
@media(max-width:1020px){
  .service-grid{grid-template-columns:1fr 1fr}
  .process{grid-template-columns:1fr 1fr}
  .diagnosis-grid,.ai-grid,.contact{grid-template-columns:1fr;gap:44px}
  .ai-visual{min-height:300px}
  .film-head{flex-direction:column;align-items:flex-start;gap:16px}
  .film-note{text-align:left}
  .section-heading{flex-direction:column;align-items:flex-start;gap:18px;margin-bottom:38px}
  .heading-note{text-align:left}
  .section{padding-top:72px;padding-bottom:72px}
  .diagnosis{padding:76px 0}
}
@media(max-width:760px){
  .wrap{padding-left:20px;padding-right:20px}
  html{scroll-padding-top:78px}
  .nav{height:72px}
  .mark{width:39px;height:39px;font-size:19px}
  .brand-text b{font-size:18px}
  .brand-text small{font-size:8px;margin-top:3px}
  .menu-toggle{display:grid;place-items:center;width:44px;height:44px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:0}
  .menu-bars,.menu-bars::before,.menu-bars::after{display:block;width:19px;height:2px;background:var(--navy);border-radius:2px;content:"";transition:transform .2s,opacity .2s}
  .menu-bars{position:relative}
  .menu-bars::before{position:absolute;top:-6px}
  .menu-bars::after{position:absolute;top:6px}
  .menu-toggle[aria-expanded="true"] .menu-bars{background:transparent}
  .menu-toggle[aria-expanded="true"] .menu-bars::before{transform:translateY(6px) rotate(45deg)}
  .menu-toggle[aria-expanded="true"] .menu-bars::after{transform:translateY(-6px) rotate(-45deg)}
  nav{display:none;position:absolute;top:72px;left:0;right:0;flex-direction:column;align-items:stretch;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 18px 30px rgba(16,43,70,.08);padding:10px 20px 16px}
  nav.open{display:flex}
  nav a{padding:15px 6px;font-size:15px;border-bottom:1px solid var(--line)}
  nav a:last-child{border-bottom:0}
  .nav-contact{border:0;border-top:2px solid var(--line);border-radius:0;margin-top:6px;text-align:center}
  .hero-grid{grid-template-columns:1fr;padding-top:44px;padding-bottom:48px;gap:42px}
  h1{font-size:37px;letter-spacing:-1px}
  h1 br{display:none}
  h2{font-size:28px}
  .intro{font-size:14px;margin-top:20px}
  .actions{margin-top:28px}
  .button{font-size:13.5px;padding:14px 20px;flex:1 1 auto}
  .hero-proof{gap:10px;margin-top:28px;font-size:12px}
  .hero-art{max-width:480px;width:100%;margin:auto;padding-top:26px}
  .ring-one{width:270px;height:270px;right:10px;top:64px}
  .ring-two{width:350px;height:350px;right:-30px;top:26px}
  .report-card{width:min(320px,86%)}
  .floating-note{margin-right:6px}
  .service-strip>.wrap{flex-wrap:wrap;justify-content:center;gap:12px 16px;padding-top:16px;padding-bottom:16px}
  .service-strip span{flex-basis:100%;text-align:center}
  .service-grid{grid-template-columns:1fr;gap:14px}
  .service-card{padding:24px 22px}
  .card-num{right:22px;top:26px}
  .diagnosis{padding:64px 0}
  .diagnosis-steps>div{padding:22px 0}
  .process{grid-template-columns:1fr 1fr;gap:14px}
  .process article{padding:22px 18px}
  .about-points{grid-template-columns:1fr;gap:14px}
  .about-points div{padding:20px 22px}
  .ai-visual{padding:28px;min-height:0}
  .ai-symbol{font-size:58px}
  .workflow-pills{margin-top:30px}
  .ai-list li{gap:14px}
  .film-frame{border-radius:12px}
  .contact{padding-top:72px;padding-bottom:72px}
  .contact-panel{padding:32px 24px}
  .contact-panel h3{font-size:28px}
  .footer-grid{flex-wrap:wrap}
  .footer-grid .brand{width:100%}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media(max-width:400px){
  h1{font-size:32px}
  h2{font-size:25px}
  .pc-only{display:none}
  .process{grid-template-columns:1fr}
  .service-card p br{display:none}
  .report-card{width:min(320px,92%)}
  .art-top,.art-bottom{font-size:8px;letter-spacing:1.4px}
  .floating-note{padding:10px 12px;margin-right:2px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important;animation:none!important}
  .js .reveal{opacity:1;transform:none}
}