/* ============================================================
   industry-beauty.css —— 美业连锁建站页专属样式
   布局：居中潮流 Hero / 四卡渐变痛点 / 错落图文方案 /
   圆形图标模块 / 图文案例 / 手风琴 FAQ / CTA
   ============================================================ */

/* ---------- 1. Hero ---------- */
.bt-hero{position:relative;min-height:94vh;display:flex;align-items:center;justify-content:center;text-align:center;overflow:hidden;background:var(--ink)}
.bt-hero-bg{background-position:center 32%}
.bt-hero-veil{
  position:absolute;inset:0;z-index:1;
  background:
    radial-gradient(circle at 50% 40%,rgba(20,20,20,.42),rgba(20,20,20,.88) 80%),
    linear-gradient(0deg,rgba(20,20,20,.6),transparent 45%);
}
.bt-hero-inner{position:relative;z-index:3;padding-top:120px;max-width:840px}
.bt-eyebrow{
  display:inline-block;padding:8px 22px;border-radius:100px;
  background:rgba(201,168,124,.14);border:1px solid rgba(201,168,124,.5);
  color:var(--coffee-bright);font-size:13px;font-weight:700;letter-spacing:.16em;margin-bottom:26px;
}
.bt-hero-title{color:#fff;font-size:clamp(36px,6vw,66px);font-weight:900;line-height:1.14;letter-spacing:-.02em;margin-bottom:22px}
.bt-gold{color:var(--coffee);position:relative;white-space:nowrap}
.bt-gold::after{content:"";position:absolute;left:0;right:0;bottom:.05em;height:.1em;background:linear-gradient(90deg,transparent,var(--coffee),transparent);border-radius:2px}
.bt-hero-sub{color:#D8CFBF;font-size:clamp(15px,1.7vw,18px);line-height:1.9;margin-bottom:34px;max-width:620px;margin:0 auto 34px}
.bt-hero-cta{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
@media (max-width:640px){.bt-hero-cta .btn{width:100%}}

/* ---------- 2. 渐变痛点卡 ---------- */
.bt-pain{background:var(--coffee-bg)}
.bt-pain-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.bt-pain-card{
  border-radius:20px;padding:32px 30px;color:#fff;min-height:180px;
  background:linear-gradient(135deg,var(--ink) 0%,var(--ink-3) 100%);
  box-shadow:var(--shadow-sm);transition:all .4s;position:relative;overflow:hidden;
}
.bt-pain-card::after{
  content:"";position:absolute;right:-30px;bottom:-30px;width:130px;height:130px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,168,124,.35),transparent 70%);
}
.bt-pain-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.bt-pain-card h3{color:#fff;font-size:19px;margin-bottom:10px;position:relative;z-index:1}
.bt-pain-card p{color:#CFC7B8;font-size:14px;line-height:1.85;position:relative;z-index:1}
@media (max-width:640px){.bt-pain-grid{grid-template-columns:1fr}}

/* ---------- 3. 错落图文方案 ---------- */
.bt-plan{background:#fff}
.bt-plan-inner{display:grid;grid-template-columns:1fr 1.1fr;gap:56px;align-items:center}
.bt-plan-media img{border-radius:24px;box-shadow:var(--shadow-lg);width:100%}
.bt-plan-text .sec-title{font-size:clamp(26px,3.4vw,38px)}
.bt-plan-text>p{color:var(--text-2);line-height:1.9;margin-bottom:24px}
.bt-plan-points>div{padding:14px 0;border-bottom:1px dashed var(--line)}
.bt-plan-points>div:last-child{border-bottom:none}
.bt-plan-points b{display:block;font-size:16px;margin-bottom:4px;color:var(--coffee-deep)}
.bt-plan-points span{font-size:14px;color:var(--text-2)}
@media (max-width:900px){.bt-plan-inner{grid-template-columns:1fr;gap:36px}}

/* ---------- 4. 圆形图标模块 ---------- */
.bt-mod{background:var(--coffee-bg)}
.bt-mod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.bt-mod{background:#fff;border-radius:50% 50% 18px 18px;padding:34px 22px 28px;text-align:center;box-shadow:var(--shadow-sm);transition:all .4s}
.bt-mod:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.bt-mod-ico{width:66px;height:66px;border-radius:50%;margin:0 auto 16px;background:var(--grad-coffee);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 22px rgba(169,136,89,.35)}
.bt-mod-ico svg{width:30px;height:30px}
.bt-mod h3{font-size:17px;margin-bottom:8px}
.bt-mod p{font-size:13.5px;color:var(--text-2);line-height:1.8}
@media (max-width:900px){.bt-mod-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.bt-mod-grid{grid-template-columns:1fr}}

/* ---------- 5. 图文案例 ---------- */
.bt-case{background:#fff}
.bt-case-inner{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.bt-case-text .sec-title{font-size:clamp(26px,3.4vw,38px)}
.bt-case-text>p{color:var(--text-2);line-height:1.9;margin-bottom:26px}
.bt-sib{margin-top:22px;font-size:14px;color:var(--text-2)}
.bt-sib a{color:var(--coffee-deep);font-weight:700;margin:0 6px}
.bt-case-media img{border-radius:24px;box-shadow:var(--shadow-lg);width:100%}
@media (max-width:900px){.bt-case-inner{grid-template-columns:1fr;gap:36px}}

/* ---------- 6. 手风琴 FAQ ---------- */
.bt-faq{background:var(--coffee-bg)}
.bt-acc{max-width:860px;margin:0 auto}
.acc-item{background:#fff;border:1px solid var(--line);border-radius:16px;margin-bottom:14px;overflow:hidden;transition:box-shadow .3s,border-color .3s}
.acc-item.open{box-shadow:var(--shadow-md);border-color:var(--coffee)}
.acc-head{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;cursor:pointer;font-weight:800;font-size:16px;color:var(--ink);text-align:left;background:none}
.acc-ico{flex-shrink:0;width:30px;height:30px;border-radius:50%;background:var(--coffee-bg);color:var(--coffee-deep);display:flex;align-items:center;justify-content:center;transition:all .3s}
.acc-ico svg{width:15px;height:15px;transition:transform .3s}
.acc-item.open .acc-ico{background:var(--grad-coffee);color:#fff}
.acc-item.open .acc-ico svg{transform:rotate(45deg)}
.acc-panel{max-height:0;overflow:hidden;transition:max-height .4s ease}
.acc-panel p{padding:0 24px 22px;color:var(--text-2);font-size:14.5px;line-height:1.9}
.acc-panel a{color:var(--coffee-deep);font-weight:700;text-decoration:underline}

/* ---------- 7. CTA ---------- */
.bt-cta{position:relative;overflow:hidden;background:var(--ink);padding:120px 0}
.bt-cta-bg{background-position:center 40%}
.bt-cta-veil{position:absolute;inset:0;background:rgba(20,20,20,.8);z-index:1}
.bt-cta-inner{position:relative;z-index:2;text-align:center}
.bt-cta-title{color:#fff;font-size:clamp(26px,4vw,42px);font-weight:900;margin-bottom:16px}
.bt-cta-sub{color:#D8CFBF;font-size:16px;margin-bottom:36px}
.bt-cta-row{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
@media (max-width:640px){.bt-cta-row .btn{width:100%}}