/* ==========================================================================
   p-high-diangong.css · 高压电工页专属样式
   布局：全宽图底 Hero + 遮罩居中文案 + 正文/Sticky 侧栏 + 竖向时间线条件
         + 横向四步流程 + 六宫格材料 + FAQ + 竖链阅读 + 左信息右表单 CTA
   ========================================================================== */

.hd-hero{position:relative}
.hd-hero-media{position:relative;height:480px}
.hd-hero-media img{width:100%;height:100%;object-fit:cover}
.hd-hero-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,11,14,.55) 0%,rgba(11,11,14,.88) 78%,#0B0B0E 100%)}
.hd-hero-body{position:absolute;inset:0;display:flex;align-items:flex-end;padding-bottom:56px}
.hd-hero-title{font-size:46px;line-height:1.2;font-weight:900;color:#fff;margin:18px 0 16px;text-shadow:0 4px 24px rgba(0,0,0,.5)}
.hd-hero-sub{font-size:16px;color:#C9CDD3;max-width:640px}
.hd-hero-btns{display:flex;gap:14px;margin-top:26px;flex-wrap:wrap}

.hd-sec-kicker{color:var(--red);font-weight:700;letter-spacing:3px;font-size:13px}
.hd-sec-title{font-size:32px;color:#fff;font-weight:800;margin:8px 0 12px}
.hd-sec-desc{color:var(--muted-2);font-size:14.5px}
.hd-sec-head{margin-bottom:40px}
.wrap-narrow{max-width:900px}

/* 介绍 + Sticky 侧栏 */
.hd-intro{background:var(--bg)}
.hd-intro-grid{display:grid;grid-template-columns:1.7fr 1fr;gap:44px;align-items:start}
.hd-intro-text p{color:var(--muted);font-size:15.5px;margin-bottom:16px}
.hd-intro-text strong{color:#fff}
.hd-intro-text a{color:var(--gold);text-decoration:underline;text-underline-offset:3px}
.hd-side{position:sticky;top:110px}
.hd-side-card{background:var(--card);border:1px solid var(--line);border-top:2px solid var(--red);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.hd-side-card h3{color:#fff;font-size:18px;margin-bottom:18px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.hd-side-steps{display:grid;gap:16px}
.hd-side-steps li{display:flex;gap:12px;align-items:flex-start}
.hd-side-steps span{width:26px;height:26px;border-radius:50%;background:rgba(224,38,29,.15);color:var(--red);font-weight:800;display:flex;align-items:center;justify-content:center;font-size:13px;flex-shrink:0}
.hd-side-steps h4{color:#fff;font-size:14.5px}
.hd-side-steps p{color:var(--muted-2);font-size:12.5px;margin-top:2px}

/* 竖向时间线条件 */
.hd-timeline{position:relative;padding-left:28px}
.hd-timeline::before{content:"";position:absolute;left:8px;top:8px;bottom:8px;width:2px;background:linear-gradient(var(--red),var(--gold))}
.hd-node{position:relative;padding-bottom:30px}
.hd-node:last-child{padding-bottom:0}
.hd-node-dot{position:absolute;left:-28px;top:4px;width:18px;height:18px;border-radius:50%;background:#0B0B0E;border:3px solid var(--red);box-shadow:0 0 0 4px rgba(224,38,29,.15)}
.hd-node-body{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px 24px;transition:transform .3s,border-color .3s}
.hd-node-body:hover{transform:translateX(6px);border-color:var(--gold)}
.hd-node-body h3{color:#fff;font-size:17px;margin-bottom:6px}
.hd-node-body p{color:var(--muted);font-size:14.5px}
.hd-node-body a{color:var(--gold);text-decoration:underline;text-underline-offset:3px}

/* 横向四步流程 */
.hd-exam{background:var(--bg)}
.hd-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:flow}
.hd-flow-step{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;position:relative;transition:transform .3s,box-shadow .3s,border-color .3s}
.hd-flow-step::after{content:"";position:absolute;right:-14px;top:50%;width:14px;height:2px;background:var(--line-2)}
.hd-flow-step:last-child::after{display:none}
.hd-flow-step:hover{transform:translateY(-8px);box-shadow:var(--shadow);border-color:var(--gold)}
.hd-flow-no{font-size:15px;font-weight:800;color:transparent;-webkit-text-stroke:1px var(--gold);letter-spacing:2px}
.hd-flow-step h3{color:#fff;font-size:18px;margin:12px 0 8px}
.hd-flow-step p{color:var(--muted);font-size:13.5px}
.hd-flow-step a{color:var(--gold);text-decoration:underline;text-underline-offset:3px}

/* 材料六宫格 */
.hd-mat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.hd-mat-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:transform .3s,border-color .3s}
.hd-mat-card:hover{transform:translateY(-6px);border-color:var(--red)}
.hd-mat-card svg{width:30px;height:30px;color:var(--gold);margin-bottom:12px}
.hd-mat-card h3{color:#fff;font-size:16px;margin-bottom:6px}
.hd-mat-card p{color:var(--muted-2);font-size:13.5px}
.hd-mat-card a{color:var(--gold);text-decoration:underline;text-underline-offset:3px}

/* FAQ */
.hd-faq-list{display:grid;gap:14px}
.hd-faq-list details{background:var(--card);border:1px solid var(--line);border-radius:12px;transition:border-color .3s}
.hd-faq-list details[open]{border-color:rgba(255,184,0,.55)}
.hd-faq-list summary{cursor:pointer;padding:18px 22px;color:#fff;font-weight:700;font-size:16px;list-style:none;position:relative;padding-right:44px}
.hd-faq-list summary::-webkit-details-marker{display:none}
.hd-faq-list summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:24px;color:var(--red);transition:transform .3s}
.hd-faq-list details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.hd-faq-list details p{padding:0 22px 20px;color:var(--muted);font-size:14.5px}

/* 竖链阅读 */
.hd-rel{background:var(--bg)}
.hd-rel-list{display:grid;gap:12px}
.hd-rel-list a{display:grid;grid-template-columns:140px 1fr auto;align-items:center;gap:18px;background:var(--card);border:1px solid var(--line);border-left:3px solid var(--red);border-radius:10px;padding:18px 22px;transition:transform .25s,border-color .25s}
.hd-rel-list a:hover{transform:translateX(6px);border-left-color:var(--gold)}
.hd-rel-list span{color:var(--gold);font-weight:700;font-size:15px}
.hd-rel-list p{color:var(--muted);font-size:14px}
.hd-rel-list em{color:var(--red);font-style:normal;font-size:13.5px}

/* CTA 卡片 */
.hd-cta-card{display:grid;grid-template-columns:1.1fr .9fr;gap:0;background:var(--card);border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}
.hd-cta-info{padding:44px 40px;background:linear-gradient(150deg,rgba(224,38,29,.14),transparent 60%)}
.hd-cta-info h2{color:#fff;font-size:28px;margin:8px 0 14px}
.hd-cta-info p{color:var(--muted);font-size:15px}
.hd-cta-contact{margin-top:24px;display:grid;gap:10px}
.hd-cta-contact li{color:var(--muted);font-size:14.5px}
.hd-cta-contact a{color:var(--gold)}
.hd-cta-form{padding:36px 34px;background:#121218;border-left:1px solid var(--line)}
.hd-cta-form h3{color:#fff;font-size:18px;margin-bottom:18px}
.hd-cta-form label{display:block;font-size:13px;color:var(--muted);margin-bottom:12px}
.hd-cta-form input,.hd-cta-form select,.hd-cta-form textarea{width:100%;margin-top:6px;padding:11px 13px;background:#0B0B0E;border:1px solid var(--line-2);border-radius:8px;color:#E8EAEE;font-size:14px;outline:none;transition:border-color .25s}
.hd-cta-form input:focus,.hd-cta-form select:focus,.hd-cta-form textarea:focus{border-color:var(--gold)}
.hd-cta-form button{width:100%;border:0}
.hd-form-note{margin-top:10px;font-size:12px;color:var(--muted-2);text-align:center}

/* 响应式 */
@media (max-width:1024px){
  .hd-hero-media{height:420px}
  .hd-hero-title{font-size:36px}
  .hd-intro-grid{grid-template-columns:1fr}
  .hd-side{position:static}
  .hd-flow{grid-template-columns:1fr 1fr}
  .hd-flow-step::after{display:none}
  .hd-mat-grid{grid-template-columns:1fr 1fr}
  .hd-cta-card{grid-template-columns:1fr}
  .hd-rel-list a{grid-template-columns:1fr;gap:6px}
  .hd-rel-list em{display:none}
}
@media (max-width:720px){
  .hd-hero-media{height:380px}
  .hd-hero-title{font-size:28px}
  .hd-sec-title{font-size:24px}
  .hd-flow,.hd-mat-grid{grid-template-columns:1fr}
  .hd-cta-info,.hd-cta-form{padding:26px 20px}
}
/* ================= 重构扩充组件（本片 15 页共用） ================= */
.rx-sec-head{margin-bottom:30px}
.rx-kicker{color:var(--red);font-weight:700;letter-spacing:3px;font-size:13px}
.rx-title{font-size:30px;color:#fff;font-weight:800;margin:8px 0 10px}
.rx-desc{color:var(--muted,#9aa0a8);font-size:14.5px;max-width:780px}

/* D 步骤条 */
.rx-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;counter-reset:rxstep}
.rx-step{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:22px 18px;transition:transform .3s,border-color .3s}
.rx-step:hover{transform:translateY(-5px);border-color:var(--gold)}
.rx-step::before{counter-increment:rxstep;content:"0"counter(rxstep);display:block;font-size:24px;font-weight:900;color:var(--red);margin-bottom:10px}
.rx-step h4{color:#fff;font-size:15.5px;margin-bottom:6px}
.rx-step p{color:var(--muted);font-size:13.5px}

/* E CSS 选项卡 */
.rx-tabs{display:flex;flex-direction:column}
.rx-tab-input{display:none}
.rx-tab-nav{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}
.rx-tab-nav label{padding:10px 20px;border:1px solid var(--line-2);border-radius:999px;color:var(--muted);cursor:pointer;font-size:14px;transition:all .25s}
.rx-tab-panel{display:none;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px 30px}
.rx-tab-panel h3{color:#fff;font-size:18px;margin-bottom:10px}
.rx-tab-panel p{color:var(--muted);font-size:14.5px;margin-bottom:8px}
.rx-tab-panel a{color:var(--gold);text-decoration:underline;text-underline-offset:3px}
.rx-tabs .rx-tab-input:nth-of-type(1):checked ~ .rx-tab-nav label:nth-child(1),
.rx-tabs .rx-tab-input:nth-of-type(2):checked ~ .rx-tab-nav label:nth-child(2),
.rx-tabs .rx-tab-input:nth-of-type(3):checked ~ .rx-tab-nav label:nth-child(3){background:rgba(224,38,29,.16);border-color:var(--red);color:#fff}
.rx-tabs .rx-tab-input:nth-of-type(1):checked ~ .rx-tab-panel:nth-of-type(1),
.rx-tabs .rx-tab-input:nth-of-type(2):checked ~ .rx-tab-panel:nth-of-type(2),
.rx-tabs .rx-tab-input:nth-of-type(3):checked ~ .rx-tab-panel:nth-of-type(3){display:block}

/* G 数字仪表盘 */
.rx-gauge{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.rx-gauge-item{background:linear-gradient(150deg,#1B1B24,#14141B);border:1px solid var(--line);border-radius:14px;padding:26px 22px;text-align:center;transition:transform .3s,border-color .3s}
.rx-gauge-item:hover{transform:translateY(-5px);border-color:var(--gold)}
.rx-gauge-item b{display:block;font-size:32px;font-weight:900;color:var(--gold);margin-bottom:8px}
.rx-gauge-item span{color:var(--muted);font-size:13.5px}

/* 警示框（陷阱提醒） */
.rx-warn{background:linear-gradient(120deg,rgba(224,38,29,.12),rgba(255,184,0,.05));border:1px solid rgba(224,38,29,.45);border-left:4px solid var(--red);border-radius:12px;padding:22px 26px}
.rx-warn h4{color:#fff;font-size:16px;margin-bottom:10px}
.rx-warn ul{display:grid;gap:8px}
.rx-warn li{color:var(--muted);font-size:14px;padding-left:18px;position:relative;list-style:none}
.rx-warn li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;background:var(--gold);border-radius:50%}

/* J 引用块 */
.rx-quote{border-left:3px solid var(--gold);padding:6px 0 6px 22px;color:var(--muted);font-size:15px;margin:20px 0;font-style:italic}

/* K 表格 */
.rx-table{width:100%;border-collapse:collapse;background:var(--card);border-radius:var(--radius);overflow:hidden}
.rx-table th{background:#14141B;color:#fff;text-align:left;padding:13px 16px;border-bottom:1px solid var(--line-2);font-size:14px}
.rx-table td{padding:13px 16px;border-bottom:1px solid var(--line);color:var(--muted);font-size:14px;vertical-align:top}
.rx-table a{color:var(--gold);text-decoration:underline;text-underline-offset:3px}

/* 加深 FAQ */
.rx-faq{display:grid;gap:12px}
.rx-faq details{background:var(--card);border:1px solid var(--line);border-radius:12px;transition:border-color .3s}
.rx-faq details[open]{border-color:rgba(255,184,0,.5)}
.rx-faq summary{cursor:pointer;padding:16px 20px;color:#fff;font-weight:700;font-size:15px;list-style:none;position:relative;padding-right:40px}
.rx-faq summary::-webkit-details-marker{display:none}
.rx-faq summary::after{content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);font-size:22px;color:var(--red)}
.rx-faq details[open] summary::after{content:"–"}
.rx-faq details p{padding:0 20px 16px;color:var(--muted);font-size:14px}

/* F 团报阶梯 */
.rx-ladder{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.rx-ladder div{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:22px;text-align:center;transition:border-color .3s}
.rx-ladder div:hover{border-color:var(--gold)}
.rx-ladder b{display:block;color:var(--gold);font-size:18px;margin-bottom:8px}
.rx-ladder p{color:var(--muted);font-size:13.5px}

/* 本地考点附注 */
.rx-note{background:#14141B;border:1px dashed var(--line-2);border-radius:12px;padding:20px 24px;color:var(--muted);font-size:14px}
.rx-note b{color:#fff}

@media (max-width:1024px){
  .rx-steps{grid-template-columns:1fr 1fr}
  .rx-gauge{grid-template-columns:1fr}
  .rx-ladder{grid-template-columns:1fr}
}
@media (max-width:720px){
  .rx-steps{grid-template-columns:1fr}
  .rx-title{font-size:24px}
}