/* ============================================================
   service-redesign.css — 网站改版升级页
   布局特征：对比 hero / 痛点 VS 收益 / ABCD 圆角卡 / 5 步流程
   ============================================================ */

/* ---------- 1. Hero ---------- */
.rd-hero{position:relative;min-height:90vh;display:flex;align-items:center;overflow:hidden;padding:150px 0 90px}
.rd-hero-bg{position:absolute;inset:-8% 0;background-size:cover;background-position:center;z-index:0}
.rd-hero-veil{position:absolute;inset:0;background:linear-gradient(105deg,rgba(20,20,20,.93) 0%,rgba(20,20,20,.72) 55%,rgba(20,20,20,.4) 100%);z-index:1}
.rd-hero-inner{position:relative;z-index:2}
.rd-crumb{font-size:13px;color:#C9BFAE;margin-bottom:30px;letter-spacing:.04em}
.rd-crumb a{color:#DFC69B}
.rd-crumb a:hover{color:#fff}
.rd-crumb span{margin:0 8px;opacity:.6}
.rd-crumb em{font-style:normal;color:#fff}
.rd-hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.rd-hero-title{color:#fff;font-size:clamp(32px,4.6vw,54px);font-weight:900;line-height:1.22;margin-bottom:22px}
.rd-gold{background:var(--grad-coffee);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.rd-hero-sub{color:#D5CDBE;font-size:16px;line-height:1.9;margin-bottom:32px;max-width:540px}
.rd-hero-cta{display:flex;flex-wrap:wrap;gap:16px}
.rd-hero-fig img{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg)}

/* ---------- 2. 痛点 VS 收益 ---------- */
.rd-compare{display:grid;grid-template-columns:1fr 80px 1fr;align-items:stretch;max-width:980px;margin:0 auto}
.rd-col{border-radius:var(--radius-lg);padding:36px 34px}
.rd-old{background:#F3EDE3;border:1px solid var(--line)}
.rd-new{background:var(--ink);color:#E9E2D6}
.rd-col h3{font-size:20px;margin-bottom:20px}
.rd-old h3{color:var(--text-2)}
.rd-new h3{color:var(--coffee-bright)}
.rd-col ul li{padding:10px 0 10px 24px;position:relative;font-size:14.5px;border-bottom:1px dashed rgba(0,0,0,.08)}
.rd-new ul li{border-bottom-color:rgba(255,255,255,.1)}
.rd-old ul li::before{content:"×";position:absolute;left:0;color:#B0A691;font-weight:800}
.rd-new ul li::before{content:"✓";position:absolute;left:0;color:var(--coffee-bright);font-weight:800}
.rd-mid{display:flex;align-items:center;justify-content:center}
.rd-mid span{width:60px;height:60px;border-radius:50%;background:var(--grad-coffee);color:#fff;font-weight:900;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-md)}

/* ---------- 3. 升级内容卡 ---------- */
.rd-items{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.rd-item{background:#fff;border-radius:var(--radius-lg);padding:32px 26px;box-shadow:var(--shadow-sm)}
.rd-item-num{display:inline-flex;width:46px;height:46px;border-radius:14px;background:var(--grad-ink);color:var(--coffee-bright);font-weight:900;font-size:18px;align-items:center;justify-content:center;margin-bottom:18px}
.rd-item h3{font-size:17px;margin-bottom:10px}
.rd-item p{font-size:13.5px;color:var(--text-2);line-height:1.85}

/* ---------- 4. 数据条 ---------- */
.rd-stats{background:var(--ink);padding:68px 0}
.rd-stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center}
.rd-stat b{display:block;font-size:clamp(36px,4.2vw,54px);font-weight:900;color:var(--coffee-bright);line-height:1.1}
.rd-stat span{color:#B7AE9E;font-size:13px;margin-top:8px;display:block}

/* ---------- 5. 5 步流程 ---------- */
.rd-flow{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.rd-step{background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);padding:26px 20px;text-align:center;position:relative}
.rd-step b{display:inline-block;font-size:13px;font-weight:900;color:var(--coffee-deep);letter-spacing:.1em;margin-bottom:12px}
.rd-step h3{font-size:15px;margin-bottom:6px}
.rd-step p{font-size:12.5px;color:var(--text-2);line-height:1.75}

/* ---------- 6. FAQ ---------- */
.rd-faq-wrap{max-width:860px}
.rd-faq{border-top:1px solid var(--line);background:#fff;border-radius:var(--radius-md);padding:0 32px;box-shadow:var(--shadow-sm)}
.acc-item{border-bottom:1px solid var(--line)}
.acc-item:last-child{border-bottom:none}
.acc-head{width:100%;display:flex;justify-content:space-between;align-items:center;gap:20px;text-align:left;font-size:16px;font-weight:700;color:var(--ink);padding:22px 4px;cursor:pointer}
.acc-arrow{width:13px;height:13px;border-right:2px solid var(--coffee-deep);border-bottom:2px solid var(--coffee-deep);transform:rotate(45deg);flex-shrink:0;transition:transform .35s;margin-top:-5px}
.acc-item.open .acc-arrow{transform:rotate(225deg)}
.acc-panel{max-height:0;overflow:hidden;transition:max-height .45s ease}
.acc-panel p{padding:0 4px 22px;color:var(--text-2);font-size:14px;line-height:1.9}
.acc-panel a{color:var(--coffee-deep);font-weight:600}

/* ---------- 7. CTA ---------- */
.rd-cta{position:relative;padding:130px 0;overflow:hidden}
.rd-cta-bg{position:absolute;inset:-8% 0;background-size:cover;background-position:center}
.rd-cta-veil{position:absolute;inset:0;background:rgba(20,20,20,.85)}
.rd-cta-inner{position:relative;z-index:2;text-align:center;max-width:700px;margin:0 auto}
.rd-cta-title{color:#fff;font-size:clamp(26px,4vw,44px);font-weight:900;margin-bottom:16px}
.rd-cta-sub{color:#B7AE9E;font-size:16px;margin-bottom:36px}
.rd-cta-row{display:flex;justify-content:center;flex-wrap:wrap;gap:16px}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .rd-hero-grid{grid-template-columns:1fr;gap:40px}
  .rd-compare{grid-template-columns:1fr;gap:24px}
  .rd-mid{padding:6px 0}
  .rd-mid span{transform:rotate(90deg)}
  .rd-items{grid-template-columns:repeat(2,1fr)}
  .rd-flow{grid-template-columns:repeat(2,1fr)}
  .rd-stats-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .rd-items{grid-template-columns:1fr}
  .rd-flow{grid-template-columns:1fr}
  .rd-stats-grid{grid-template-columns:repeat(2,1fr);gap:20px}
}