/* ============================================================
   龙铭特种作业 · 培训大纲 dagang.css
   签名 S08：双对角线交叉（X 形两个渐变叠加），内容居中，
            装饰 = 四角括号线框
   ============================================================ */

/* ---------- 首屏 Hero S08 ---------- */
.hero{position:relative;min-height:96vh;display:flex;align-items:center;overflow:hidden;background:var(--ink)}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.4;transform:scale(1.05)}
/* X 形双渐变叠加 */
.hero-fade{
  position:absolute;inset:0;
  background:
    linear-gradient(135deg,rgba(11,11,12,.9) 0%,rgba(11,11,12,.35) 50%,rgba(11,11,12,.9) 100%),
    linear-gradient(-135deg,rgba(11,11,12,.85) 0%,rgba(11,11,12,.3) 50%,rgba(11,11,12,.9) 100%);
}
/* 四角括号线框 */
.hero-corners{position:absolute;inset:0;pointer-events:none}
.corner{position:absolute;width:46px;height:46px;border:2px solid rgba(255,255,255,.35)}
.c-tl{top:96px;left:6%;border-right:0;border-bottom:0}
.c-tr{top:96px;right:6%;border-left:0;border-bottom:0}
.c-bl{bottom:60px;left:6%;border-right:0;border-top:0}
.c-br{bottom:60px;right:6%;border-left:0;border-top:0}
.hero-inner{position:relative;z-index:2;width:min(920px,92%);margin-inline:auto;padding:150px 0 90px;text-align:center;display:flex;flex-direction:column;align-items:center}
.hero-inner .crumbs{justify-content:center;margin-bottom:20px}
.hero-flag{margin-bottom:22px}
.hero-title{font-size:clamp(32px,5vw,60px);line-height:1.18;font-weight:900;margin-bottom:20px}
.hero-title .hl{color:#fff;position:relative;white-space:nowrap}
.hero-title .hl::after{content:"";position:absolute;left:0;right:0;bottom:6px;height:14px;z-index:-1;background:linear-gradient(90deg,rgba(255,255,255,.18),transparent);transform:skewX(-8deg)}
.hero-lead{max-width:620px;font-size:16.5px;color:var(--muted-dark);margin-bottom:32px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;justify-content:center}

/* ---------- 大纲分几块 ---------- */
.base-sec{background:var(--ink)}
.base-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.base-txt p{font-size:15.5px;color:var(--muted-dark);line-height:1.9;margin-top:16px}
.base-img{width:100%;height:420px;object-fit:cover;border-radius:14px}

/* ---------- 理论部分 ---------- */
.section-alt{background:var(--ink-2)}
.theory-cols{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.theory-list{display:flex;flex-direction:column;gap:16px;margin-top:24px}
.theory-list li{padding:18px 22px;border:1px solid var(--line);border-radius:10px;background:var(--ink)}
.theory-list h3{font-size:16px;font-weight:800;margin-bottom:6px}
.theory-list p{font-size:14px;color:var(--muted-dark);line-height:1.7}
.theory-list .tip{display:block;margin-top:6px;font-size:12.5px;color:var(--muted-dark);opacity:.85;border-top:1px dashed var(--line);padding-top:6px}
.theory-img{width:100%;height:420px;object-fit:cover;border-radius:14px}

/* ---------- 实操表 ---------- */
.practice-sec{background:var(--ink)}
.prac-table{border:1px solid var(--line);border-radius:12px;overflow:hidden;margin-bottom:36px}
.prac-row{display:grid;grid-template-columns:1fr 2fr;padding:16px 22px;border-top:1px solid var(--line);align-items:center;font-size:14.5px}
.prac-row:first-child{border-top:0}
.prac-row>span:first-child{font-weight:800}
.prac-row p{color:var(--muted-dark)}
.prac-head{background:var(--ink-3);font-weight:800;font-size:13px;letter-spacing:.06em}
.prac-img{width:100%;height:340px;object-fit:cover;border-radius:14px}

/* ---------- 理论题库长啥样 ---------- */
.tiku-sec{background:var(--ink-2)}
.tiku-box{padding:44px 48px;border-radius:14px;background:var(--ink);border:1px solid var(--line)}
.tiku-box p{font-size:15px;color:var(--muted-dark);line-height:1.95;margin-bottom:14px}
.tiku-box p:last-child{margin-bottom:0}
.tiku-line{font-size:16px;font-weight:800;color:#fff !important;border-left:2px solid #fff;padding-left:14px}

/* ---------- 怎么备考（浅底） ---------- */
.section-light{background:var(--paper);color:var(--txt-on-light)}
.section-light .t-en{color:var(--muted-light)}
.prep-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.prep-card{padding:32px 28px;border-radius:12px;background:#fff;border:1px solid var(--line-dark);position:relative}
.prep-no{display:inline-block;font-size:34px;font-weight:900;color:transparent;-webkit-text-stroke:1px rgba(0,0,0,.25);line-height:1;margin-bottom:14px}
.prep-card h3{font-size:18px;font-weight:800;margin-bottom:8px}
.prep-card p{font-size:14px;color:var(--muted-light);line-height:1.85}
.prep-card p a{color:#000;font-weight:700;border-bottom:1px solid #000}
.prep-note{margin-top:26px;font-size:14.5px;color:var(--muted-light);line-height:1.9}
.prep-note .lk{color:#000;font-weight:700;border-bottom:1px solid #000}

/* ---------- 考不过怎么办 ---------- */
.bukao-sec{background:var(--ink)}
.bukao-box{padding:44px 48px;border-radius:14px;background:var(--ink-2);border:1px solid var(--line)}
.bukao-box p{font-size:15px;color:var(--muted-dark);line-height:1.95;margin-bottom:14px}
.bukao-box p:last-child{margin-bottom:0}
.bukao-line{font-size:16px;font-weight:800;color:#fff !important;border-left:2px solid #fff;padding-left:14px}

/* ---------- FAQ ---------- */
.faq-sec{background:var(--ink-2)}
.faq-list{max-width:860px;display:flex;flex-direction:column;gap:14px}
.faq{border:1px solid var(--line);border-radius:10px;padding:20px 24px;background:var(--ink)}
.faq summary{cursor:pointer;font-size:16px;font-weight:700;list-style:none;position:relative;padding-right:30px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:0;font-size:20px;color:var(--muted-dark)}
.faq[open] summary::after{transform:rotate(45deg)}
.faq p{margin-top:12px;font-size:14.5px;color:var(--muted-dark);line-height:1.85}

/* ---------- CTA ---------- */
.cta-sec{background:var(--ink)}
.cta-strip{background:var(--ink-2);border:1px solid var(--line);border-radius:18px;padding:50px 56px;display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;position:relative;overflow:hidden}
.cta-strip h2{font-size:clamp(22px,2.8vw,32px);font-weight:900;margin-bottom:8px}
.cta-strip p{color:var(--muted-dark);font-size:14.5px}
.cta-btns{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:1}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){.prep-grid{grid-template-columns:1fr}}
@media (max-width:1024px){.base-grid,.theory-cols{grid-template-columns:1fr;gap:32px}.corner{display:none}}
@media (max-width:768px){
  .hero{min-height:auto}
  .hero-inner{padding:130px 6% 60px}
  .prac-row{grid-template-columns:1fr;gap:4px}
  .prac-head{display:none}
  .tiku-box,.bukao-box{padding:28px 22px}
  .cta-strip{padding:34px 26px}
}
@media (max-width:480px){.base-img,.theory-img,.prac-img{height:260px}}