/* ===========================================================
   BCHJ 官网 · 公共样式
   与首页 index.html 保持同一套设计语言（深墨蓝 + 电光蓝 + 青色）
   产品详情页共用本文件，页面内只写自身特有样式
   =========================================================== */
:root{
  --ink:#050E1F;
  --ink-2:#0A1830;
  --paper:#F6F8FC;
  --line:#E3EAF5;
  --brand:#2F6BFF;
  --brand-2:#5C8DFF;
  --brand-3:#1B4DE0;
  --cyan:#22D3EE;
  --gold:#FFB020;
  --text:#0E1B31;
  --text-2:#5A6B84;
  --text-3:#8A99AF;
  --r-s:10px;
  --r-m:16px;
  --r-l:24px;
  --shadow-1:0 1px 2px rgba(10,24,48,.05), 0 8px 24px -12px rgba(10,24,48,.12);
  --shadow-2:0 24px 60px -24px rgba(10,24,48,.24), 0 2px 8px rgba(10,24,48,.05);
  --shadow-3:0 60px 120px -40px rgba(9,30,80,.45);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"SF Mono",ui-monospace,"JetBrains Mono",Consolas,monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);background:#fff;color:var(--text);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:0;background:none}
svg{display:block}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------------- 导航 ---------------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:90;
  transition:background .35s ease, box-shadow .35s ease;
  background:linear-gradient(180deg, rgba(5,14,31,.55) 0%, rgba(5,14,31,0) 100%);
}
.nav.is-solid{
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(18px) saturate(160%);
  box-shadow:0 1px 0 var(--line), 0 10px 30px -24px rgba(10,24,48,.5);
}
.nav-in{display:flex;align-items:center;gap:40px;height:76px}
.brand{display:flex;align-items:center;gap:12px;color:#fff;transition:color .35s;flex:0 0 auto}
.nav.is-solid .brand{color:var(--text)}

/* ---- 品牌标识：渐变方块 + 中文名 + 英文小字 ---- */
.bmark{
  position:relative;flex:0 0 auto;width:48px;height:48px;border-radius:13px;
  display:grid;place-items:center;overflow:hidden;
  background:linear-gradient(145deg,#2F6BFF 0%,#1740C4 55%,#0B7FD4 100%);
  box-shadow:
    0 8px 20px -8px rgba(47,107,255,.85),
    0 2px 6px -2px rgba(10,30,70,.35),
    inset 0 1px 0 rgba(255,255,255,.42),
    inset 0 -1px 0 rgba(0,0,0,.16);
  transition:transform .35s cubic-bezier(.2,.8,.2,1), box-shadow .35s;
}
/* 斜向高光，让方块有体积感 */
.bmark::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(158deg, rgba(255,255,255,.34) 0%, rgba(255,255,255,.06) 46%, rgba(255,255,255,0) 64%);
  pointer-events:none;
}
.bmark i{
  position:relative;z-index:2;font-style:normal;font-weight:800;font-size:12.5px;
  color:#fff;line-height:1;letter-spacing:.7px;
  font-family:"Helvetica Neue", Arial, sans-serif;
  text-shadow:0 1px 2px rgba(8,22,50,.28);
  transform:translateY(.5px);
}
/* 底部一条品牌红短线，呼应原始标识 */
}
.brand:hover .bmark{
  transform:translateY(-1px);
  box-shadow:
    0 10px 24px -8px rgba(47,107,255,.95),
    0 2px 6px -2px rgba(10,30,70,.35),
    inset 0 1px 0 rgba(255,255,255,.5),
    inset 0 -1px 0 rgba(0,0,0,.16);
}
.btxt{display:flex;flex-direction:column;justify-content:center;line-height:1}
.btxt b{
  font-size:16.5px;font-weight:800;letter-spacing:1.6px;
  line-height:1.15;white-space:nowrap;
}
.btxt i{
  display:block;font-style:normal;margin-top:6px;
  font-size:9.5px;font-weight:600;letter-spacing:3.2px;
  opacity:.48;white-space:nowrap;
}
.nav.is-solid .btxt i{opacity:.42}

@media (max-width:760px){
  .bmark{width:40px;height:40px;border-radius:11px}
  .bmark i{font-size:11px;letter-spacing:.5px}
  .btxt b{font-size:16.5px;letter-spacing:1.4px}
  .btxt i{font-size:10px;letter-spacing:1px;margin-top:5px}
}
.nav-menu{display:flex;gap:22px;margin-left:4px}
.nav-menu a{font-size:14px;color:rgba(255,255,255,.78);position:relative;padding:6px 0;transition:color .2s}
.nav.is-solid .nav-menu a{color:var(--text-2)}
.nav-menu a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--cyan));transition:width .28s ease;
}
.nav-menu a:hover,.nav-menu a.on{color:#fff}
.nav.is-solid .nav-menu a:hover,.nav.is-solid .nav-menu a.on{color:var(--brand)}
.nav-menu a:hover::after,.nav-menu a.on::after{width:100%}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.link-ghost{font-size:14px;color:rgba(255,255,255,.78);padding:9px 4px;transition:.2s}
.nav.is-solid .link-ghost{color:var(--text-2)}
.link-ghost:hover{color:#fff}
.nav.is-solid .link-ghost:hover{color:var(--brand)}
.btn{
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  border-radius:999px;font-size:14px;font-weight:600;letter-spacing:.2px;
  padding:11px 22px;transition:transform .2s ease, box-shadow .25s ease, background .25s;
  white-space:nowrap;
}
.btn-primary{
  color:#fff;background:linear-gradient(135deg,#2F6BFF,#1B4DE0);
  box-shadow:0 10px 24px -12px rgba(47,107,255,.9), inset 0 1px 0 rgba(255,255,255,.22);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 16px 30px -14px rgba(47,107,255,.95), inset 0 1px 0 rgba(255,255,255,.3)}
.btn-ghost{color:#fff;border:1px solid rgba(255,255,255,.26);background:rgba(255,255,255,.06)}
.btn-ghost:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.42)}
.btn-line{color:var(--text);border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-1)}
.btn-line:hover{transform:translateY(-1px);box-shadow:var(--shadow-2);border-color:#CFE0FF;color:var(--brand)}
.btn-light{color:var(--text);background:#fff;box-shadow:var(--shadow-1)}
.btn-light:hover{transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-sm{padding:9px 18px;font-size:13.5px}

/* ---------------- 区块骨架 ---------------- */
.sec{padding:96px 0}
.sec--tight{padding:72px 0}
.sec--grey{background:linear-gradient(180deg,#F7FAFE,#EFF4FC)}
.sec-head{max-width:720px}
.sec-head.center{margin:0 auto;text-align:center}
.kicker{font-size:12px;font-weight:700;letter-spacing:2.6px;color:var(--brand);display:flex;align-items:center;gap:10px}
.sec-head.center .kicker{justify-content:center}
.kicker::before{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--cyan))}
.sec-head.center .kicker::before{display:none}
.sec-title{margin-top:16px;font-size:clamp(26px,2.9vw,36px);line-height:1.36;font-weight:800;letter-spacing:-.5px}
.sec-desc{margin-top:16px;font-size:15px;line-height:1.9;color:var(--text-2)}

/* ---------------- 详情页 Hero ---------------- */
.p-hero{
  position:relative;overflow:hidden;padding:128px 0 76px;
  background:
    radial-gradient(900px 460px at 88% -10%, rgba(47,107,255,.13), rgba(47,107,255,0) 62%),
    radial-gradient(700px 420px at 0% 6%, rgba(34,211,238,.12), rgba(34,211,238,0) 68%),
    linear-gradient(180deg,#F7FAFF 0%,#FFFFFF 62%);
}
.p-hero::after{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(47,107,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(47,107,255,.05) 1px,transparent 1px);
  background-size:58px 58px;
  mask-image:radial-gradient(760px 460px at 78% 12%, #000 8%, transparent 72%);
  -webkit-mask-image:radial-gradient(760px 460px at 78% 12%, #000 8%, transparent 72%);
}
.p-hero .wrap{position:relative;z-index:2}
.p-hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.96fr);gap:56px;align-items:center;margin-top:34px}
.tag{
  display:inline-flex;align-items:center;gap:9px;padding:7px 15px 7px 11px;border-radius:999px;
  background:rgba(47,107,255,.08);border:1px solid rgba(47,107,255,.16);
  font-size:11.5px;letter-spacing:1.6px;color:var(--brand-3);font-weight:700;
}
.tag i{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px rgba(47,107,255,.12)}
.p-hero h1{
  margin-top:22px;font-size:clamp(32px,3.6vw,48px);line-height:1.24;font-weight:800;letter-spacing:-.9px;
}
.p-hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,#2F6BFF,#22A6EE 60%,#22D3EE);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.p-hero-sub{margin-top:20px;font-size:15.5px;line-height:1.95;color:var(--text-2);max-width:520px}
.p-hero-sub b{color:var(--text);font-weight:650}
.p-hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.p-hero-points span{
  font-size:12.5px;color:#41526B;background:#fff;border:1px solid var(--line);
  border-radius:8px;padding:7px 12px;box-shadow:0 1px 2px rgba(10,24,48,.04);
  display:flex;align-items:center;gap:7px;
}
.p-hero-points span::before{
  content:"";width:5px;height:5px;border-radius:50%;
  background:linear-gradient(140deg,#2F6BFF,#22D3EE);
}
.p-hero-cta{display:flex;gap:12px;margin-top:32px;flex-wrap:wrap}

/* 截图框（真实截图或 CSS 还原都放进来） */
.shot{
  position:relative;border-radius:16px;overflow:hidden;background:#fff;
  border:1px solid #E6EEFA;box-shadow:0 40px 90px -40px rgba(9,30,80,.42), 0 2px 8px rgba(9,30,80,.06);
}
.shot-bar{height:38px;background:#0A1830;display:flex;align-items:center;gap:7px;padding:0 14px}
.shot-bar i{width:8px;height:8px;border-radius:50%;background:#31415c;display:block}
.shot-bar i:nth-child(1){background:#FF5F57}.shot-bar i:nth-child(2){background:#FEBC2E}.shot-bar i:nth-child(3){background:#28C840}
.shot-bar span{margin-left:10px;font-size:10.5px;color:#7E93B4;font-family:var(--mono);letter-spacing:.4px}
.shot-img{display:block;width:100%;height:auto}
.float-card{
  position:absolute;z-index:3;display:flex;align-items:center;gap:9px;padding:10px 14px;border-radius:12px;
  background:rgba(255,255,255,.97);border:1px solid rgba(255,255,255,.9);
  box-shadow:0 18px 40px -18px rgba(9,30,80,.5);font-size:11.5px;font-weight:600;color:#16243F;
}
.float-card em{font-style:normal;color:#8A99AF;font-weight:500}
.float-card .d{width:7px;height:7px;border-radius:50%;background:#22C55E;box-shadow:0 0 0 4px rgba(34,197,94,.16)}
.float-card.f1{left:-26px;top:-34px}
.float-card.f2{right:-14px;bottom:34px}

/* ---------------- 流程条 ---------------- */
.flow-wrap{position:relative;color:#fff;overflow:hidden;
  background:
    radial-gradient(760px 400px at 84% 0%, rgba(47,107,255,.28), transparent 62%),
    linear-gradient(160deg,#050E1F,#071B39 58%,#04101F);
}
.flow-wrap::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:54px 54px;
  mask-image:radial-gradient(760px 460px at 30% 20%,#000,transparent 76%);
  -webkit-mask-image:radial-gradient(760px 460px at 30% 20%,#000,transparent 76%);
  pointer-events:none;
}
.flow-wrap .sec-title{color:#fff}
.flow-wrap .sec-desc{color:rgba(212,228,250,.66)}
.flow-wrap .kicker{color:#7FB2FF}
.flow-line{position:relative;display:grid;gap:0;margin-top:56px}
.flow-line::before{
  content:"";position:absolute;left:0;right:0;top:29px;height:1px;
  background:linear-gradient(90deg,rgba(47,107,255,.05),rgba(122,170,255,.5),rgba(34,211,238,.5),rgba(47,107,255,.05));
}
.flow-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(0,1fr));gap:12px;position:relative}
.fstep{position:relative;text-align:center;padding:0 6px}
.fstep .dot{
  width:58px;height:58px;margin:0 auto;border-radius:50%;display:grid;place-items:center;position:relative;z-index:2;
  background:linear-gradient(165deg,rgba(26,50,94,.95),rgba(8,22,44,.95));
  border:1px solid rgba(122,170,255,.3);color:#8FE3FF;
  box-shadow:0 0 0 6px rgba(8,22,44,.9), 0 12px 26px -14px rgba(34,211,238,.6);
  transition:.3s;
}
.fstep:hover .dot{transform:translateY(-3px);border-color:rgba(143,227,255,.7)}
.fstep b{display:block;margin-top:14px;font-size:13.5px;font-weight:650;color:#fff;letter-spacing:.2px}
.fstep em{display:block;margin-top:6px;font-size:11.5px;color:rgba(160,190,235,.62);font-style:normal;line-height:1.6}
.fstep .no{
  position:absolute;top:-2px;right:calc(50% - 34px);z-index:3;
  font-family:var(--mono);font-size:9px;color:rgba(143,227,255,.7);
}
.flow-note{
  margin-top:34px;display:flex;gap:10px;align-items:flex-start;
  padding:16px 18px;border-radius:12px;background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.09);font-size:12.5px;line-height:1.8;color:rgba(200,218,246,.72);
}
.flow-note b{color:#fff;font-weight:650}

/* ---------------- 能力清单 ---------------- */
.cap-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:48px}
.ccard{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px 22px;
  transition:transform .3s cubic-bezier(.2,.8,.2,1), box-shadow .3s, border-color .3s;position:relative;overflow:hidden;
}
.ccard:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#CFE0FF}
.ccard .ico{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;margin-bottom:14px;
  background:linear-gradient(150deg,rgba(47,107,255,.12),rgba(34,211,238,.1));
  color:var(--brand-3);border:1px solid rgba(47,107,255,.14);
}
.ccard h4{font-size:15px;font-weight:750;letter-spacing:-.1px}
.ccard p{margin-top:8px;font-size:12.8px;line-height:1.8;color:var(--text-2)}
.ccard ul{list-style:none;margin-top:12px;display:grid;gap:6px}
.ccard ul li{font-size:12.2px;color:#5D6E88;display:flex;gap:7px;line-height:1.65}
.ccard ul li::before{content:"";width:4px;height:4px;border-radius:50%;background:#C3D4EE;margin-top:8px;flex:0 0 auto}

/* ---------------- 角色视角 ---------------- */
.role-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:44px}
.role{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 20px;box-shadow:var(--shadow-1);
}
.role .rh{display:flex;align-items:center;gap:9px}
.role .rh .av{
  width:30px;height:30px;border-radius:9px;display:grid;place-items:center;flex:0 0 auto;
  background:linear-gradient(150deg,rgba(47,107,255,.14),rgba(34,211,238,.1));color:var(--brand-3);
}
.role b{font-size:13.5px;font-weight:700}
.role p{margin-top:12px;font-size:12.5px;line-height:1.78;color:var(--text-2)}
.role .badge{
  margin-top:14px;display:inline-block;font-size:11px;color:var(--brand);
  background:rgba(47,107,255,.08);border-radius:6px;padding:3px 8px;
}

/* ---------------- 双栏图文 ---------------- */
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:64px;align-items:center}
.split.rev{grid-template-columns:minmax(0,1.05fr) minmax(0,1fr)}
.split h2{font-size:clamp(24px,2.6vw,32px);line-height:1.38;font-weight:800;letter-spacing:-.5px}
.split p{margin-top:16px;font-size:14.5px;line-height:1.9;color:var(--text-2)}
.split .kv{display:flex;gap:32px;margin-top:28px;flex-wrap:wrap}
.split .kv div b{display:block;font-size:24px;font-weight:800;letter-spacing:-.6px;color:var(--text)}
.split .kv div b i{font-style:normal;font-size:13px;color:var(--brand);margin-left:2px;font-weight:700}
.split .kv div span{display:block;margin-top:6px;font-size:12px;color:var(--text-3)}

/* ---------------- FAQ ---------------- */
.faq{margin-top:44px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line);padding:20px 0}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
  font-size:15px;font-weight:650;color:var(--text);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary .q{
  width:22px;height:22px;border-radius:6px;flex:0 0 auto;display:grid;place-items:center;
  background:rgba(47,107,255,.08);color:var(--brand);font-family:var(--mono);font-size:10px;font-weight:700;
}
.faq summary .pm{margin-left:auto;color:var(--text-3);transition:transform .25s}
.faq details[open] summary .pm{transform:rotate(45deg)}
.faq .ans{padding:12px 0 0 36px;font-size:13.5px;line-height:1.9;color:var(--text-2)}

/* ---------------- CTA ---------------- */
.cta-wrap{padding:0 0 92px;background:#fff}
.cta-box{
  position:relative;overflow:hidden;border-radius:26px;padding:56px 52px;
  background:
    radial-gradient(680px 300px at 88% 8%, rgba(34,211,238,.22), transparent 62%),
    linear-gradient(135deg,#1B4DE0,#2F6BFF 46%,#0E3AAE);
  box-shadow:0 46px 96px -48px rgba(27,77,224,.9);
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:36px;align-items:center;color:#fff;
}
.cta-box::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:radial-gradient(560px 280px at 20% 50%,#000,transparent 74%);
  -webkit-mask-image:radial-gradient(560px 280px at 20% 50%,#000,transparent 74%);
}
.cta-box h2{font-size:clamp(22px,2.6vw,32px);font-weight:800;letter-spacing:-.5px;line-height:1.36;position:relative}
.cta-box p{margin-top:12px;font-size:14px;line-height:1.85;color:rgba(232,241,255,.8);max-width:520px;position:relative}
.cta-actions{display:flex;flex-direction:column;gap:11px;position:relative}
.cta-tels{display:flex;gap:9px;flex-wrap:wrap}
.cta-note{font-size:12px;color:rgba(226,238,255,.66);text-align:center}

/* ---------------- 页脚 ---------------- */
footer{background:#040B18;color:rgba(200,216,240,.6);padding:68px 0 28px;font-size:13px}
.f-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.07)}
.f-brand{display:flex;align-items:center;gap:12px;color:#fff;margin-bottom:18px}
.f-brand .bmark{width:46px;height:46px;border-radius:12px}
.f-desc{line-height:1.9;font-size:12.5px;max-width:280px}
.f-col h5{font-size:13px;color:#fff;font-weight:700;margin-bottom:16px;letter-spacing:.4px}
.f-col a{display:block;font-size:12.5px;padding:5px 0;transition:.2s}
.f-col a:hover{color:#fff}
.f-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:24px;font-size:12px;flex-wrap:wrap;color:rgba(160,180,210,.45)}

/* ---------------- 进场动效 ---------------- */
.rv{transition:opacity .75s cubic-bezier(.2,.8,.2,1), transform .75s cubic-bezier(.2,.8,.2,1)}
.js-reveal .rv{opacity:0;transform:translateY(20px)}
.js-reveal .rv.in{opacity:1;transform:none}
.rv[data-d="1"]{transition-delay:.08s}
.rv[data-d="2"]{transition-delay:.16s}
.rv[data-d="3"]{transition-delay:.24s}

/* ---------------- 响应式 ---------------- */
@media (max-width:1180px){
  .cap-list{grid-template-columns:repeat(2,1fr)}
  .role-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1080px){
  .p-hero-grid,.split,.split.rev{grid-template-columns:1fr;gap:40px}
  .float-card.f1{left:0}
  .float-card.f2{right:0}
  .nav-menu{display:none}
  .cta-box{grid-template-columns:1fr;padding:40px 30px}
  .cta-actions{flex-direction:row;flex-wrap:wrap;align-items:center}
  .cta-note{text-align:left}
}
@media (max-width:760px){
  .wrap{padding:0 20px}
  .sec,.sec--tight{padding:60px 0}
  .cap-list,.role-grid{grid-template-columns:1fr}
  .f-grid{grid-template-columns:1fr 1fr}
  .flow-steps{grid-template-columns:repeat(auto-fit,minmax(132px,1fr))}
  .p-hero{padding:112px 0 56px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .js-reveal .rv{opacity:1;transform:none}
}

/* ============================================================
   以下为完整官网新增组件：移动菜单 / 痛点 / 方案 / 结果 / 文章 / 案例 / 表单
   ============================================================ */

/* 移动端菜单 */
.nav-burger{
  display:none;width:38px;height:38px;border-radius:10px;
  border:1px solid var(--line);color:var(--text);background:#fff;place-items:center;
}
@media (max-width:1080px){
  .nav-burger{display:grid}
  .nav-menu.is-open{
    display:flex;flex-direction:column;gap:0;position:absolute;top:76px;left:0;right:0;
    background:#fff;padding:8px 20px 16px;box-shadow:0 18px 30px -20px rgba(10,24,48,.4);
    border-top:1px solid var(--line);
  }
  .nav-menu.is-open a{padding:13px 0;border-bottom:1px solid #F1F5FC;font-size:14.5px}
  .nav-menu.is-open a::after{display:none}
  .nav-menu.is-open a:last-child{border-bottom:0}
}

/* 痛点 */
.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:44px}
.pain{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px 22px 22px;overflow:hidden;
}
.pain::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,#FF7A7A,#FFB020);
}
.pain .pn{font-family:var(--mono);font-size:10.5px;letter-spacing:1.6px;color:#D9A3A3;font-weight:700}
.pain h4{margin-top:10px;font-size:15px;font-weight:750;line-height:1.5}
.pain p{margin-top:9px;font-size:12.8px;line-height:1.8;color:var(--text-2)}

/* 解决方案清单 */
.sol-list{display:grid;gap:14px;margin-top:40px}
.sol{
  display:flex;gap:18px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 24px;
  transition:.3s;
}
.sol:hover{border-color:#CFE0FF;box-shadow:var(--shadow-1);transform:translateX(3px)}
.sol .n{
  flex:0 0 auto;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;
  font-family:var(--mono);font-size:11px;font-weight:700;color:var(--brand-3);
  background:rgba(47,107,255,.09);border:1px solid rgba(47,107,255,.14);margin-top:2px;
}
.sol b{display:block;font-size:15px;font-weight:700;letter-spacing:-.1px}
.sol p{margin-top:7px;font-size:13.2px;line-height:1.85;color:var(--text-2)}

/* 结果指标 */
.result-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:44px}
.result{
  background:linear-gradient(180deg,#fff,#FAFCFF);border:1px solid var(--line);border-radius:18px;
  padding:24px 22px;box-shadow:var(--shadow-1);
}
.result b{
  display:block;font-size:27px;font-weight:800;letter-spacing:-.8px;
  background:linear-gradient(100deg,#2F6BFF,#22D3EE);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.result span{display:block;margin-top:9px;font-size:12.5px;color:var(--text-2);line-height:1.6}

/* 文章列表 */
.art-list{margin-top:36px;border-top:1px solid var(--line)}
.art{
  display:grid;grid-template-columns:104px 1fr 24px;gap:22px;padding:26px 0;
  border-bottom:1px solid var(--line);align-items:start;transition:.2s;
}
.art:hover{background:linear-gradient(90deg,rgba(47,107,255,.03),transparent)}
.art .d{font-family:var(--mono);font-size:11.5px;color:var(--text-3);padding-top:4px}
.art .tg{
  display:inline-block;font-size:10.5px;color:var(--brand);background:rgba(47,107,255,.08);
  border-radius:5px;padding:2px 7px;margin-bottom:8px;font-weight:600;
}
.art h4{font-size:16.5px;font-weight:750;letter-spacing:-.2px;line-height:1.5}
.art p{margin-top:9px;font-size:13px;line-height:1.8;color:var(--text-2)}
.art .go{color:#C3CEE0;padding-top:6px;transition:.2s}
.art:hover .go{color:var(--brand);transform:translateX(3px)}

/* 案例卡 */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:48px}
.case-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:26px 24px 22px;transition:.35s;overflow:hidden;position:relative;
}
.case-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-2);border-color:#CFE0FF}
.case-card .ind{
  display:inline-flex;align-self:flex-start;font-size:10.5px;font-weight:700;letter-spacing:1.2px;
  color:var(--brand);background:rgba(47,107,255,.08);border-radius:6px;padding:4px 9px;
}
.case-card h3{margin-top:16px;font-size:17px;font-weight:750;line-height:1.5;letter-spacing:-.2px}
.case-card .cl{margin-top:10px;font-size:11.5px;color:var(--text-3)}
.case-card p{margin-top:12px;font-size:12.8px;line-height:1.8;color:var(--text-2);flex:1}
.case-card .rs{display:flex;gap:18px;margin-top:16px;padding-top:16px;border-top:1px dashed var(--line)}
.case-card .rs div b{display:block;font-size:17px;font-weight:800;color:var(--text);letter-spacing:-.4px}
.case-card .rs div span{display:block;margin-top:3px;font-size:10.5px;color:var(--text-3)}

/* 详情正文 */
.prose{max-width:780px}
.prose p{font-size:15px;line-height:2.05;color:var(--text-2);margin-top:20px}
.prose p:first-child{margin-top:0}
.prose h2{margin-top:40px;font-size:20px;font-weight:750}
.meta-line{display:flex;align-items:center;gap:14px;font-size:12.5px;color:var(--text-3);margin-top:18px;flex-wrap:wrap}
.meta-line .sep{width:1px;height:12px;background:var(--line)}

/* 表单 */
.form-card{
  max-width:760px;margin:44px auto 0;background:#fff;border:1px solid var(--line);
  border-radius:22px;padding:38px 36px 34px;box-shadow:var(--shadow-2);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--text);margin-bottom:8px}
.field label em{font-style:normal;color:#E5484D;margin-left:2px}
.field input,.field select,.field textarea{
  width:100%;font-family:inherit;font-size:14px;color:var(--text);background:#FBFCFE;
  border:1px solid #E3EAF5;border-radius:10px;padding:12px 14px;outline:none;transition:.2s;
}
.field input:focus,.field select:focus,.field textarea:focus{
  background:#fff;border-color:#9EC3FF;box-shadow:0 0 0 3px rgba(47,107,255,.1);
}
.field textarea{min-height:96px;resize:vertical}
.form-tip{font-size:12px;color:var(--text-3);line-height:1.8;margin-top:6px}
.form-actions{margin-top:24px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.form-note{font-size:12px;color:var(--text-3)}
.form-ok{
  display:none;margin-top:18px;padding:14px 16px;border-radius:10px;font-size:13.5px;
  background:rgba(34,197,94,.1);border:1px solid rgba(34,197,94,.26);color:#15803D;
}
.form-ok.show{display:block}

/* 侧栏信息卡 */
.info-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px 24px;box-shadow:var(--shadow-1)}
.info-card .row{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid #F2F6FC}
.info-card .row:last-child{border-bottom:0}
.info-card .row .ic{
  width:32px;height:32px;border-radius:9px;flex:0 0 auto;display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(47,107,255,.12),rgba(34,211,238,.1));color:var(--brand-3);
}
.info-card .row span{display:block;font-size:11px;color:var(--text-3)}
.info-card .row b{display:block;font-size:13.5px;color:var(--text);font-weight:650;margin-top:3px}

@media (max-width:1180px){
  .pain-grid{grid-template-columns:1fr}
  .result-grid{grid-template-columns:repeat(2,1fr)}
  .case-grid{grid-template-columns:1fr}
  .art{grid-template-columns:84px 1fr 20px;gap:16px}
}
@media (max-width:760px){
  .form-row{grid-template-columns:1fr}
  .form-card{padding:26px 20px}
  .art{grid-template-columns:1fr;gap:10px}
  .art .go{display:none}
}

/* 表单错误提示 */
.form-err{
  display:none;margin-top:14px;padding:12px 14px;border-radius:10px;font-size:13px;line-height:1.7;
  background:rgba(239,68,68,.07);border:1px solid rgba(239,68,68,.22);color:#B91C1C;
}
.form-err.show{display:block}

/* 页脚备案链接 */
.f-bottom a{color:inherit;text-decoration:none;transition:.2s}
.f-bottom a:hover{color:#fff}

/* 按钮禁用态 */
.btn:disabled{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none}