/* ============================================================
   极易智联 · 定制全链通 —— 全屋定制管理系统 独立设计系统
   自包含：本文件为 custom-os.html 唯一样式来源，不依赖 style.css
   ============================================================ */

/* ---------- Design Tokens ---------- */
:root{
  --blue:#2563FF;
  --cyan:#00C8FF;
  --ink:#0A0F1A;
  --ink-2:#0d1830;
  --gray:#6B7280;
  --gray-2:#9CA3AF;
  --bg:#FFFFFF;
  --bg-soft:#F5F8FF;
  --bg-tint:#EEF4FF;
  --line:#E4ECFF;
  --line-soft:#EDEFF5;
  --radius:20px;
  --radius-sm:14px;
  --shadow-sm:0 6px 20px -14px rgba(15,23,42,.25);
  --shadow-md:0 18px 40px -24px rgba(37,99,255,.4);
  --shadow-lg:0 30px 60px -30px rgba(37,99,255,.5);
  --grad:linear-gradient(135deg,#2563FF 0%,#087CFA 50%,#00C8FF 100%);
  --grad-soft:linear-gradient(135deg,#EAF1FF,#F4F8FF);
  --maxw:1200px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC","Inter",sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{text-decoration:none;color:inherit;}
img{max-width:100%;display:block;}
ul{list-style:none;}
.gradient{
  background:var(--grad);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}

/* ---------- Layout ---------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}
section{padding:96px 0;position:relative;}
.section-head{max-width:760px;margin:0 auto 48px;text-align:center;}
.section-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:2px;
  color:var(--blue);
  background:#EAF1FF;
  border:1px solid #DCE7FF;
  padding:6px 14px;border-radius:999px;margin-bottom:18px;
}
.section-tag::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--grad);}
.section-title{
  font-size:clamp(26px,3.4vw,40px);
  font-weight:800;line-height:1.25;letter-spacing:-.5px;color:var(--ink);
}
.section-sub{margin-top:14px;font-size:16px;color:var(--gray);}
.section-lead{margin-top:14px;font-size:15px;line-height:1.8;color:var(--gray);}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease;}
.reveal.active{opacity:1;transform:none;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;
  padding:13px 24px;border-radius:12px;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease;
  cursor:pointer;white-space:nowrap;
}
.btn svg{flex:0 0 auto;}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--shadow-md);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);}
.btn-outline{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.35);backdrop-filter:blur(6px);}
.btn-outline:hover{background:rgba(255,255,255,.16);transform:translateY(-2px);}
.btn-white{background:#fff;color:var(--ink);box-shadow:var(--shadow-md);}
.btn-white:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.4);}
.btn-ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-2px);}

/* 导航样式统一由 css/nav.css 提供 */

/* ============================================================
   HERO (深色)
   ============================================================ */
.hero{
  position:relative;
  background:radial-gradient(120% 120% at 80% 0%,#0d1a33 0%,#050914 55%);
  color:#fff;padding:150px 0 96px;overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(circle at 18% 22%,rgba(37,99,255,.35),transparent 38%),
    radial-gradient(circle at 85% 30%,rgba(0,200,255,.28),transparent 40%),
    radial-gradient(circle at 60% 90%,rgba(37,99,255,.18),transparent 44%);
}
.hero-bg::after{
  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:44px 44px;
  mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 75%);
}
.hero-inner{
  position:relative;z-index:1;
  max-width:var(--maxw);margin:0 auto;padding:0 24px;
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:#cfe0ff;
  background:rgba(37,99,255,.16);
  border:1px solid rgba(96,165,250,.4);
  padding:7px 14px;border-radius:999px;margin-bottom:22px;
}
.hero-tag svg{color:#60A5FA;}
.hero h1{
  font-size:clamp(32px,4.6vw,54px);
  font-weight:800;line-height:1.18;letter-spacing:-1px;
}
.hero-sub{
  margin-top:22px;max-width:520px;
  font-size:16px;line-height:1.8;color:rgba(255,255,255,.72);
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-metrics{
  display:flex;gap:14px;margin-top:38px;flex-wrap:wrap;
}
.metric-item{
  flex:1 1 130px;min-width:0;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  border-radius:16px;padding:18px 16px;
  backdrop-filter:blur(8px);
}
.metric-item .num{
  font-size:30px;font-weight:800;line-height:1;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.metric-item .num sup{font-size:16px;}
.metric-item .label{margin-top:6px;font-size:13px;color:rgba(255,255,255,.7);}

.hero-visual{position:relative;}
.smart-factory-svg{
  position:relative;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.12);
  border-radius:24px;padding:18px;
  box-shadow:0 30px 70px -40px rgba(0,200,255,.5);
}
.smart-factory-svg svg{width:100%;height:auto;display:block;}
.screen-caption{
  display:flex;align-items:center;gap:10px;margin-top:18px;justify-content:center;
  font-size:13.5px;color:rgba(255,255,255,.7);
}
.screen-caption .dot{width:9px;height:9px;border-radius:50%;background:var(--grad);box-shadow:0 0 0 4px rgba(0,200,255,.2);}

/* ============================================================
   INDUSTRY PAIN POINTS
   ============================================================ */
.challenge-section{background:var(--bg);}
.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.pain-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.pain-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:#B8D1FF;}
.pain-icon{
  width:52px;height:52px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:var(--grad-soft);color:var(--blue);
  margin-bottom:16px;box-shadow:0 10px 22px -14px rgba(37,99,255,.6);
}
.pain-card h4{font-size:18px;font-weight:700;margin-bottom:8px;}
.pain-card p{font-size:14px;color:var(--gray);line-height:1.7;}

/* ============================================================
   CORE PILLARS (深色)
   ============================================================ */
.pillars-section{
  background:radial-gradient(130% 100% at 50% 0%,#10203c 0%,#0A0F1A 60%);
  color:#fff;
}
.pillars-section .section-title{color:#fff;}
.pillars-section .section-tag{background:rgba(37,99,255,.18);border-color:rgba(96,165,250,.4);color:#bcd3ff;}
.pillars-section .section-sub{color:rgba(255,255,255,.65);}
.pillar-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.pillar-card{
  position:relative;overflow:hidden;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius);
  padding:26px 22px;
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease,background .28s ease;
}
.pillar-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:var(--grad);opacity:0;transition:opacity .28s ease;
}
.pillar-card:hover{transform:translateY(-6px);border-color:rgba(96,165,250,.5);background:rgba(255,255,255,.08);}
.pillar-card:hover::before{opacity:1;}
.pillar-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.pillar-icon{
  width:54px;height:54px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:var(--grad);color:#fff;box-shadow:var(--shadow-md);
}
.pillar-no{
  font-size:34px;font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1.4px rgba(255,255,255,.28);
}
.pillar-card h3{font-size:19px;font-weight:700;margin-bottom:10px;}
.pillar-lead{font-size:13.5px;line-height:1.7;color:rgba(255,255,255,.72);margin-bottom:16px;}
.pillar-points{display:flex;flex-direction:column;gap:9px;}
.pillar-points li{
  position:relative;padding-left:22px;font-size:13.5px;color:rgba(255,255,255,.85);
}
.pillar-points li::before{
  content:"";position:absolute;left:0;top:7px;width:12px;height:12px;border-radius:50%;
  background:var(--grad);opacity:.9;
}
.pillar-points li::after{
  content:"";position:absolute;left:4px;top:10px;width:4px;height:2px;background:#fff;border-radius:2px;
}
.flow-showcase{
  margin-top:56px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius);
  padding:26px 22px;
  overflow:hidden;
}
.flow-caption{text-align:center;font-size:14px;font-weight:600;color:#bcd3ff;margin-bottom:18px;}
.flow-svg-wrap{overflow-x:auto;padding-bottom:6px;}
.flow-svg{width:100%;min-width:1080px;height:auto;}

/* ============================================================
   CAPABILITY — FOUR SMART POWERS (浅)
   ============================================================ */
.smart-section{background:var(--bg-soft);}
.smart-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.adv-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 24px;transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.adv-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:#B8D1FF;}
.adv-icon{
  width:56px;height:56px;border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  background:var(--grad);color:#fff;margin-bottom:18px;
  box-shadow:0 14px 28px -16px rgba(37,99,255,.7);
}
.adv-card h4{font-size:18px;font-weight:700;margin-bottom:10px;}
.adv-card p{font-size:14px;color:var(--gray);line-height:1.75;}

/* ============================================================
   EIGHT PLATFORMS (浅白)
   ============================================================ */
.platform-section{background:var(--bg);}
.flow-strip{
  position:relative;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--bg-soft) 100%);
  border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 24px 18px;margin-bottom:40px;
  box-shadow:var(--shadow-sm);overflow:hidden;
}
.flow-strip::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(circle at 8% 0%,rgba(37,99,255,.06),transparent 40%),
    radial-gradient(circle at 92% 100%,rgba(0,200,255,.06),transparent 40%);
}
.flow-strip-axis{
  display:flex;flex-wrap:wrap;gap:8px;justify-content:center;position:relative;z-index:1;
}
.flow-strip-axis .step{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:8px 12px 8px 28px;border-radius:999px;
  font-size:13px;font-weight:600;background:#fff;border:1px solid var(--line);color:#1F2937;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;cursor:default;white-space:nowrap;
}
.flow-strip-axis .step::before{
  content:attr(data-n);position:absolute;left:6px;top:50%;transform:translateY(-50%);
  width:18px;height:18px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:11px;font-weight:700;color:#fff;background:var(--grad);
}
.flow-strip-axis .step:hover{transform:translateY(-2px);border-color:var(--blue);box-shadow:0 6px 18px -10px rgba(37,99,255,.35);}
.flow-strip-axis .step.s-marketing{background:var(--grad-soft);border-color:#DCE7FF;color:#1E3A8A;}
.flow-strip-axis .step.s-production{
  background:linear-gradient(135deg,#1e3a8a 0%,#2563FF 100%);
  border:1px solid #1e40af;
  color:#FFFFFF !important;
  font-weight:700;
  font-size:13.5px;
  padding:10px 14px 10px 32px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.25),0 4px 12px -6px rgba(37,99,255,.45);
  text-shadow:0 1px 2px rgba(0,0,0,.25);
  letter-spacing:.5px;
}
.flow-strip-axis .step.s-production::before{
  background:linear-gradient(135deg,#00C8FF,#2563FF);
  box-shadow:0 0 0 2px rgba(255,255,255,.25);
}
.flow-strip-axis .step.s-after{background:linear-gradient(135deg,#E6FAFF,#F0FBFF);border-color:#CFF1FF;color:#075985;}
.flow-strip-axis .step.s-after::before{background:linear-gradient(135deg,#087CFA,#00C8FF);}
.flow-strip-legend{
  display:flex;flex-wrap:wrap;gap:18px;justify-content:center;
  margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);position:relative;z-index:1;
}
.flow-strip-legend .lg{display:inline-flex;align-items:center;gap:8px;font-size:12px;color:var(--gray);font-weight:600;letter-spacing:.5px;}
.flow-strip-legend .lg i{width:18px;height:8px;border-radius:4px;display:inline-block;}
.flow-strip-legend .lg-marketing i{background:linear-gradient(90deg,#2563FF,#00C8FF);}
<omitted>
.flow-strip-legend .lg-after i{background:linear-gradient(90deg,#087CFA,#00C8FF);}

.platform-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.platform-cell{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 20px 20px;display:flex;gap:16px;align-items:flex-start;
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;overflow:hidden;
}
.platform-cell::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--grad);opacity:0;transition:opacity .28s ease;
}
.platform-cell:hover{transform:translateY(-4px);border-color:#B8D1FF;box-shadow:var(--shadow-md);}
.platform-cell:hover::before{opacity:1;}
.platform-num{
  flex:0 0 auto;width:46px;height:46px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:800;color:#fff;background:var(--grad);
  box-shadow:0 8px 20px -8px rgba(37,99,255,.5);letter-spacing:.5px;
}
.platform-body{flex:1 1 auto;min-width:0;}
.platform-cell h4{margin:0 0 8px;font-size:17px;font-weight:700;color:var(--ink);line-height:1.3;}
.platform-tag{
  display:inline-block;font-size:11px;font-weight:600;padding:3px 9px;border-radius:999px;
  margin-bottom:8px;letter-spacing:.3px;border:1px solid transparent;
}
.platform-cell .tag-marketing{background:#EAF1FF;color:#1E3A8A;border-color:#DCE7FF;}
.platform-cell .tag-production{background:#0A0F1A;color:#fff;border-color:#0A0F1A;}
.platform-cell .tag-after{background:#E6FAFF;color:#075985;border-color:#CFF1FF;}
.platform-how{margin:0 0 8px;font-size:13px;line-height:1.7;color:#4B5563;}
.platform-why{margin:0;font-size:12.5px;line-height:1.65;color:var(--blue);padding:8px 10px;background:var(--bg-soft);border-radius:8px;}
.platform-why b{color:var(--ink);font-weight:700;}

/* ============================================================
   LANDING / SUPPORT (浅渐变)
   ============================================================ */
.landing-section{background:var(--grad-soft);}
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative;}
.timeline-item{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px;transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.timeline-item:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:#B8D1FF;}
.tl-dot{width:14px;height:14px;border-radius:50%;background:var(--grad);box-shadow:0 0 0 5px rgba(37,99,255,.16);margin-bottom:14px;}
.tl-step{font-size:12px;font-weight:700;letter-spacing:1px;color:var(--blue);text-transform:uppercase;margin-bottom:6px;}
.timeline-item h4{font-size:17px;font-weight:700;margin-bottom:8px;}
.timeline-item p{font-size:13.5px;color:var(--gray);line-height:1.7;}

/* ============================================================
   CTA (深色)
   ============================================================ */
.cta-section{
  position:relative;overflow:hidden;
  background:radial-gradient(120% 120% at 50% 0%,#10203c 0%,#050914 60%);
  color:#fff;text-align:center;padding:96px 0;
}
.cta-section::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(circle at 20% 10%,rgba(37,99,255,.3),transparent 40%),
    radial-gradient(circle at 80% 90%,rgba(0,200,255,.25),transparent 42%);
}
.cta-inner{position:relative;z-index:1;text-align:center;}
.cta-inner h2{font-size:clamp(26px,3.4vw,38px);font-weight:800;letter-spacing:-.5px;}
.cta-inner p{margin-top:16px;font-size:16px;color:rgba(255,255,255,.72);line-height:1.8;}
.cta-btns{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:32px;}
.cta-phone{
  display:inline-flex;align-items:center;gap:10px;margin-top:34px;
  font-size:15px;color:rgba(255,255,255,.85);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  padding:12px 22px;border-radius:999px;backdrop-filter:blur(8px);
}
.cta-phone a{color:#fff;font-weight:700;font-size:17px;letter-spacing:.5px;}

/* ============================================================
   FOOTER
   ============================================================ */
footer{background:var(--ink);color:#fff;padding:54px 0 40px;}
.footer-inner{max-width:var(--maxw);margin:0 auto;padding:0 24px;text-align:center;}
.footer-logo img{height:34px;width:auto;margin:0 auto 18px;}
.footer-inner p{color:rgba(255,255,255,.7);font-size:14px;line-height:1.7;}
.footer-inner p a{color:#fff;font-weight:600;}
.divider{height:1px;background:rgba(255,255,255,.12);margin:24px auto;max-width:520px;}
.footer-inner .copy{font-size:12px;opacity:.5;}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:1080px){
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero-visual{order:-1;max-width:560px;}
  .pillar-grid{grid-template-columns:repeat(2,1fr);}
  .smart-grid{grid-template-columns:repeat(2,1fr);}
  .platform-grid{grid-template-columns:repeat(2,1fr);}
  .timeline{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:680px){
  section{padding:72px 0;}
  .hero{padding:120px 0 72px;}
  .pain-grid{grid-template-columns:1fr;}
  .pillar-grid{grid-template-columns:1fr;}
  .smart-grid{grid-template-columns:1fr;}
  .platform-grid{grid-template-columns:1fr;}
  .timeline{grid-template-columns:1fr;}
  .platform-cell{flex-direction:column;}
  .hero-metrics{gap:10px;}
  .metric-item{flex:1 1 100px;padding:14px 12px;}
  .flow-strip{padding:16px 14px 14px;border-radius:16px;}
  .flow-strip-axis .step{font-size:12px;padding:7px 10px 7px 24px;}
  .flow-strip-axis .step::before{width:16px;height:16px;font-size:10px;}
}

/* ============ 相关洞察（产品页底部） ============ */
#related-insights{padding:80px 0;}
.rel-eyebrow{display:inline-block;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:#2563FF;font-weight:700;margin-bottom:10px;}
.rel-title{font-size:26px;font-weight:700;margin:0 0 10px;}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:22px;}
.rel-card{display:flex;flex-direction:column;gap:8px;padding:20px;border-radius:14px;text-decoration:none;color:inherit;
  background:rgba(127,127,127,.06);border:1px solid rgba(127,127,127,.16);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;}
.rel-card:hover{transform:translateY(-3px);border-color:rgba(37,99,255,.5);box-shadow:0 12px 26px rgba(37,99,255,.18);}
.rel-tag{font-size:12px;color:#2563FF;font-weight:600;}
.rel-card h3{font-size:16px;line-height:1.4;margin:0;}
.rel-card p{font-size:13px;line-height:1.6;opacity:.72;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-more{font-size:13px;color:#2563FF;font-weight:600;margin-top:4px;}
@media(max-width:860px){.rel-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:560px){.rel-grid{grid-template-columns:1fr;}}