/* ============================================================
   service-brand.css — 品牌官网建设页
   布局特征：居中超大 typography hero / VS 对照 / 色卡字体卡 / 大 hover 行
   ============================================================ */

/* ---------- 1. Hero ---------- */
.bd-hero{position:relative;min-height:96vh;display:flex;align-items:center;justify-content:center;overflow:hidden;text-align:center;padding:160px 0 110px}
.bd-hero-bg{position:absolute;inset:-8% 0;background-size:cover;background-position:center}
.bd-hero-veil{position:absolute;inset:0;background:rgba(20,20,20,.72);backdrop-filter:blur(2px)}
.bd-hero-inner{position:relative;z-index:2;max-width:860px}
.bd-crumb{font-size:13px;color:#C9BFAE;margin-bottom:26px;letter-spacing:.04em}
.bd-crumb a{color:#DFC69B}
.bd-crumb a:hover{color:#fff}
.bd-crumb span{margin:0 8px;opacity:.6}
.bd-crumb em{font-style:normal;color:#fff}
.bd-hero-kicker{font-size:13px;letter-spacing:.5em;color:var(--coffee-bright);margin-bottom:20px;font-weight:700}
.bd-hero-title{color:#fff;font-size:clamp(40px,6.4vw,78px);font-weight:900;line-height:1.14;margin-bottom:26px;letter-spacing:.01em}
.bd-gold{background:var(--grad-coffee);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.bd-hero-sub{color:#D0C8B9;font-size:16px;line-height:1.9;max-width:600px;margin:0 auto 36px}
.bd-hero-cta{display:flex;justify-content:center;flex-wrap:wrap;gap:16px}

/* ---------- 2. VS 对照 ---------- */
.bd-vs{display:grid;grid-template-columns:1fr 90px 1fr;align-items:stretch;gap:0;max-width:1000px;margin:0 auto}
.bd-vs-col{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:38px 36px}
.bd-vs-old{color:var(--text-2);font-size:22px;margin-bottom:22px;opacity:.8}
.bd-vs-new{color:var(--coffee-deep);font-size:22px;margin-bottom:22px}
.bd-vs-col ul li{padding:11px 0 11px 26px;position:relative;font-size:14.5px;color:var(--text);border-bottom:1px dashed var(--line)}
.bd-vs-col ul li:last-child{border-bottom:none}
.bd-vs-old-col ul li::before{content:"—";position:absolute;left:0;color:#C0B7A6}
.bd-vs-new ul li::before{content:"✓";position:absolute;left:0;color:var(--coffee-deep);font-weight:800}
.bd-vs-mid{display:flex;align-items:center;justify-content:center}
.bd-vs-mid span{width:64px;height:64px;border-radius:50%;background:var(--grad-ink);color:var(--coffee-bright);font-weight:900;display:flex;align-items:center;justify-content:center;font-size:15px;box-shadow:var(--shadow-md)}

/* ---------- 3. 视觉系统卡 ---------- */
.bd-visual{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.bd-vs-card{background:#fff;border-radius:var(--radius-md);padding:30px 28px;box-shadow:var(--shadow-sm)}
.bd-vs-card h3{font-size:17px;margin-bottom:18px}
.bd-swatches{display:flex;gap:10px;margin-bottom:16px}
.bd-swatches span{width:54px;height:54px;border-radius:12px;box-shadow:inset 0 0 0 1px rgba(0,0,0,.06)}
.bd-type-sample{background:var(--coffee-bg);border-radius:12px;padding:18px 20px;display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.bd-vs-card>p{font-size:13px;color:var(--text-2);line-height:1.8}
.bd-vs-card img{border-radius:12px;margin-bottom:14px;height:130px;width:100%;object-fit:cover}

/* ---------- 4. 大 hover 行 ---------- */
.bd-list-wrap{max-width:960px}
.bd-rows{border-top:1px solid var(--line)}
.bd-row{display:grid;grid-template-columns:60px 1fr 150px;gap:24px;align-items:center;padding:26px 18px;border-bottom:1px solid var(--line);transition:background .3s,padding-left .3s}
.bd-row:hover{background:var(--coffee-bg);padding-left:30px}
.bd-row>b{font-size:26px;font-weight:900;color:var(--coffee);opacity:.75}
.bd-row h3{font-size:17px;margin-bottom:5px}
.bd-row p{font-size:14px;color:var(--text-2);line-height:1.75}
.bd-row>span{font-size:12px;color:var(--text-2);background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 14px;text-align:center}

/* ---------- 5. 数据条 ---------- */
.bd-stats{padding:70px 0}
.bd-stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center}
.bd-stat b{display:block;font-size:clamp(36px,4.2vw,54px);font-weight:900;color:var(--coffee-deep);line-height:1.1}
.bd-stat span{color:var(--text-2);font-size:13px;margin-top:8px;display:block;letter-spacing:.05em}

/* ---------- 6. 案例 ---------- */
.bd-case{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.bd-case-media img{border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}
.bd-case-links{margin:26px 0 18px}
.bd-case-links a{display:block;padding:12px 0;border-bottom:1px solid var(--line);font-weight:700;font-size:15px;display:flex;justify-content:space-between;align-items:center;transition:color .3s,padding-left .3s}
.bd-case-links a:hover{color:var(--coffee-deep);padding-left:10px}
.bd-case-links a b{color:var(--coffee)}
.bd-case-tip{font-size:13px;color:var(--text-2)}
.bd-case-tip a{color:var(--coffee-deep);font-weight:600}

/* ---------- 7. FAQ ---------- */
.bd-faq-wrap{max-width:860px}
.bd-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}

/* ---------- 8. CTA ---------- */
.bd-cta{position:relative;padding:130px 0;overflow:hidden;background:var(--grad-coffee)}
.bd-cta::before{content:"";position:absolute;bottom:-80px;left:-60px;width:360px;height:360px;border-radius:50%;background:rgba(255,255,255,.12)}
.bd-cta-inner{position:relative;z-index:2;text-align:center;max-width:720px;margin:0 auto}
.bd-cta-title{color:#fff;font-size:clamp(28px,4.2vw,46px);font-weight:900;margin-bottom:16px;text-shadow:0 2px 20px rgba(0,0,0,.15)}
.bd-cta-sub{color:rgba(255,255,255,.9);font-size:16px;margin-bottom:36px}
.bd-cta-row{display:flex;justify-content:center;flex-wrap:wrap;gap:16px}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .bd-vs{grid-template-columns:1fr;gap:24px}
  .bd-vs-mid{padding:6px 0}
  .bd-vs-mid span{transform:rotate(90deg)}
  .bd-visual{grid-template-columns:1fr;max-width:520px;margin:0 auto}
  .bd-case{grid-template-columns:1fr;gap:40px}
  .bd-stats-grid{grid-template-columns:repeat(2,1fr)}
  .bd-row{grid-template-columns:44px 1fr;gap:14px}
  .bd-row>span{grid-column:2;justify-self:start}
}