/* ============================================================
   industry-energy.css 能源环保建站页
   布局：深色叠层 Hero → 数字条 → 痛点四宫格 → 交替图文 → 暗色模块 → CTA
   ============================================================ */

/* ---------- Hero ---------- */
.en-hero{position:relative;overflow:hidden;padding:calc(var(--nav-h) + var(--topbar-h) + 90px) 0 130px;color:#fff}
.en-hero-bg{position:absolute;inset:-60px;background-size:cover;background-position:center}
.en-veil{position:absolute;inset:0;background:linear-gradient(100deg,rgba(20,24,20,.85) 0%,rgba(20,24,20,.5) 60%,rgba(20,24,20,.35) 100%)}
.en-hero-inner{position:relative;max-width:700px}
.en-eyebrow{font-size:13px;font-weight:800;letter-spacing:.18em;color:var(--coffee-bright);margin-bottom:16px}
.en-title{font-size:clamp(34px,4.6vw,54px);line-height:1.22;font-weight:900;margin-bottom:18px}
.en-gold{color:var(--coffee-bright)}
.en-hero-inner p{color:#D8CFBE;font-size:16px;line-height:1.9;max-width:540px;margin-bottom:26px}
.en-cta{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 数字条 ---------- */
.en-nums-row{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.en-num b{display:block;font-size:clamp(32px,3.2vw,46px);font-weight:900;color:var(--coffee-deep);line-height:1.1}
.en-num p{margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.8}

/* ---------- 痛点 ---------- */
.en-pain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.en-pain-item{background:#fff;border-radius:18px;padding:28px 24px;box-shadow:var(--shadow-sm)}
.en-pain-item b{display:block;font-size:22px;font-weight:900;color:var(--coffee);font-style:italic;margin-bottom:10px}
.en-pain-item h3{font-size:16.5px;margin-bottom:8px}
.en-pain-item p{font-size:13.5px;color:var(--text-2);line-height:1.75}

/* ---------- 方案交替 ---------- */
.en-plan-row{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;margin-bottom:56px}
.en-plan-row img{border-radius:var(--radius-md);box-shadow:var(--shadow-sm)}
.en-plan-body h3{font-size:22px;margin-bottom:12px}
.en-plan-body p{font-size:15px;color:var(--text-2);line-height:1.9}
.en-plan-flip figure{order:2}

/* ---------- 模块 ---------- */
.en-mod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.en-mod-item{background:var(--ink-3);border:1px solid rgba(255,255,255,.08);border-radius:16px;padding:26px 24px}
.en-mod-item h3{color:#fff;font-size:16px;margin-bottom:8px}
.en-mod-item p{color:#B7AE9E;font-size:13.5px;line-height:1.75}

/* ---------- 案例 ---------- */
.en-case{display:grid;grid-template-columns:1.2fr .8fr;gap:36px;align-items:center;background:var(--coffee-bg);border-radius:var(--radius-lg);padding:26px}
.en-case img{border-radius:var(--radius-md)}
.en-case-tag{display:inline-block;font-size:12px;font-weight:800;color:var(--coffee-deep);background:#fff;padding:5px 14px;border-radius:999px;margin-bottom:12px}
.en-case-body h3{font-size:21px;margin-bottom:10px}
.en-case-body p{font-size:14.5px;color:var(--text-2);line-height:1.85}

/* ---------- 手风琴 ---------- */
.acc-item{border:1px solid var(--line);border-radius:14px;margin-bottom:14px;background:#fff;overflow:hidden}
.acc-head{width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:20px 24px;font-size:15.5px;font-weight:700;color:var(--ink);text-align:left}
.acc-head svg{width:18px;height:18px;flex-shrink:0;color:var(--coffee-deep);transition:transform .35s}
.acc-item.open .acc-head svg{transform:rotate(180deg)}
.acc-panel{max-height:0;overflow:hidden;transition:max-height .45s ease}
.acc-panel p{padding:0 24px 20px;color:var(--text-2);font-size:14.5px;line-height:1.9}

/* ---------- 相关行业 ---------- */
.en-related{padding:20px 0 50px}
.en-related-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.en-related-link{display:flex;justify-content:space-between;align-items:center;background:var(--ink);color:#fff;border-radius:14px;padding:18px 22px;font-weight:800;font-size:15px;transition:all .3s}
.en-related-link span{color:var(--coffee-bright)}
.en-related-link:hover{background:var(--coffee-deep);transform:translateY(-4px)}

/* ---------- CTA ---------- */
.en-cta{background:var(--ink);text-align:center;color:#fff}
.en-cta-inner h2{color:#fff;font-size:clamp(28px,3.6vw,42px);margin-bottom:14px}
.en-cta-inner p{color:#B7AE9E}
.en-cta-row{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin:28px 0 18px}
.en-cta-note{font-size:13.5px;color:#B7AE9E}
.en-cta-note a{color:var(--coffee-bright);text-decoration:underline}

/* ---------- 响应式 ---------- */
@media(max-width:960px){
  .en-nums-row,.en-pain-grid{grid-template-columns:1fr 1fr}
  .en-plan-row,.en-case{grid-template-columns:1fr}
  .en-plan-flip figure{order:0}
  .en-mod-grid{grid-template-columns:1fr}
  .en-related-row{grid-template-columns:1fr}
}