/* ============================================================
 * credits.css —— 积分说明页专属样式
 * 复用 design-system.css 配色 + 卡片规范；这里只放本页布局
 * ============================================================ */

.main-area{padding:32px 32px 96px;max-width:920px;margin:0 auto}
.main-area > .page-head-noheader{margin-bottom:18px}
.main-area .crumb{font-size:13px;color:var(--text-3)}
.main-area .crumb a{color:var(--text-2);text-decoration:none;transition:color 150ms var(--ease-out)}
.main-area .crumb a:hover{color:var(--text)}

.page-head{margin-bottom:32px}
.page-head .crumb{font-size:13px;color:var(--text-3);margin-bottom:14px}
.page-head .crumb a{color:var(--text-2);text-decoration:none;transition:color 150ms var(--ease-out)}
.page-head .crumb a:hover{color:var(--text)}
.page-head h1{font-size:34px;font-weight:700;letter-spacing:-.8px;margin-bottom:12px;background:var(--gradient-brand);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;display:inline-block}
.page-head .page-sub{font-size:14.5px;color:var(--text-2);line-height:1.7;max-width:680px}

/* === 余额大卡 === */
.balance-card{background:linear-gradient(135deg,rgba(99,102,241,.08) 0%,rgba(139,92,246,.04) 100%);border:1px solid var(--border-2);border-radius:var(--radius-2xl);padding:36px 40px;margin-bottom:28px;position:relative;overflow:hidden}
.balance-card::before{content:"";position:absolute;width:380px;height:380px;border-radius:50%;background:radial-gradient(circle,rgba(99,102,241,.15) 0%,transparent 65%);top:-150px;right:-130px;pointer-events:none}
.balance-card.good{border-color:rgba(16,185,129,.3)}
.balance-card.good::before{background:radial-gradient(circle,rgba(16,185,129,.12) 0%,transparent 65%)}
.balance-card.warn{border-color:rgba(245,158,11,.35)}
.balance-card.warn::before{background:radial-gradient(circle,rgba(245,158,11,.15) 0%,transparent 65%)}
.balance-card.empty{border-color:rgba(239,68,68,.35)}
.balance-card.empty::before{background:radial-gradient(circle,rgba(239,68,68,.18) 0%,transparent 65%)}
.balance-card.loading{border-style:dashed}

.balance-card .bal-label{font-size:13px;color:var(--text-2);letter-spacing:.4px;margin-bottom:10px;font-weight:500}
.balance-card .bal-num{font-size:60px;font-weight:700;letter-spacing:-2px;line-height:1.05;background:var(--gradient-brand);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;font-variant-numeric:tabular-nums;display:flex;align-items:baseline;gap:10px;margin-bottom:14px}
.balance-card.good .bal-num{background:linear-gradient(135deg,#10b981 0%,#34d399 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.balance-card.warn .bal-num{background:linear-gradient(135deg,#f59e0b 0%,#fbbf24 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.balance-card.empty .bal-num{background:linear-gradient(135deg,#ef4444 0%,#f87171 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.balance-card .bal-num span{font-size:16px;-webkit-text-fill-color:var(--text-3);font-weight:600;letter-spacing:0}
.balance-card .bal-hint{font-size:13.5px;color:var(--text-2);line-height:1.6;position:relative;z-index:2}

/* === 区块 === */
.card-block{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);padding:30px 32px;margin-bottom:24px;position:relative;overflow:hidden}
.card-block::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(99,102,241,.4),transparent)}
.card-block h2{font-size:18px;font-weight:600;letter-spacing:-.2px;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.card-block h2::before{content:"";width:3px;height:18px;border-radius:2px;background:var(--gradient-brand)}
.card-block .block-sub{font-size:13.5px;color:var(--text-2);margin-bottom:22px;line-height:1.65}

/* === 扣费规则 === */
.rules-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--border);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border)}
.rule-item{display:flex;align-items:center;gap:14px;padding:18px 20px;background:var(--bg-2);transition:background 150ms var(--ease-out)}
.rule-item:hover{background:var(--surface-2)}
.rule-icon{width:32px;height:32px;border-radius:8px;background:rgba(99,102,241,.12);border:1px solid rgba(99,102,241,.25);display:flex;align-items:center;justify-content:center;font-size:16px;color:#a5b4fc;flex-shrink:0}
.rule-name{flex:1;font-size:14px;font-weight:500}
.rule-cost{font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;font-weight:600}
.rule-cost.free{color:var(--green)}

/* === 回血列表 === */
.earn-list{list-style:none;counter-reset:earn;padding:0;margin:0}
.earn-list li{counter-increment:earn;padding:18px 0 18px 56px;position:relative;border-bottom:1px solid var(--border)}
.earn-list li:last-child{border-bottom:none}
.earn-list li::before{content:counter(earn);position:absolute;left:0;top:18px;width:38px;height:38px;border-radius:10px;background:rgba(99,102,241,.12);border:1px solid rgba(99,102,241,.25);display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:600;color:#a5b4fc;font-variant-numeric:tabular-nums}
.earn-list li b{font-size:14.5px;font-weight:600;color:var(--text);display:block;margin-bottom:4px}
.earn-list li p{font-size:13px;color:var(--text-2);line-height:1.65}
.earn-list li .hl{color:#c7d2fe;font-weight:600}

/* === 三条铁律 === */
.card-block.remind .rule-list{list-style:none;padding:0;margin:0}
.card-block.remind .rule-list li{position:relative;padding:14px 0 14px 36px;font-size:13.5px;color:var(--text-2);line-height:1.65}
.card-block.remind .rule-list li::before{content:"";position:absolute;left:0;top:19px;width:16px;height:16px;border-radius:4px;background:rgba(16,185,129,.15);border:1px solid rgba(16,185,129,.4);background-image:linear-gradient(135deg,transparent 40%,#10b981 40%,#10b981 60%,transparent 60%);transform:rotate(45deg) translate(2px,2px)}
.card-block.remind .rule-list li b{color:var(--text);font-weight:600}

/* === 页脚 === */
.page-foot{display:flex;gap:12px;margin-top:32px}
.page-foot .btn{padding:11px 22px;border-radius:var(--radius);font-size:14px;font-weight:600;text-decoration:none;display:inline-flex;align-items:center;transition:all 180ms var(--ease-out);font-family:inherit}
.page-foot .btn.primary{background:var(--gradient-brand);color:#fff;box-shadow:0 8px 24px rgba(99,102,241,.35),inset 0 1px 0 rgba(255,255,255,.2)}
.page-foot .btn.primary:hover{transform:translateY(-1px);box-shadow:0 12px 32px rgba(99,102,241,.48)}
.page-foot .btn.ghost{border:1px solid var(--border-2);background:transparent;color:var(--text-2)}
.page-foot .btn.ghost:hover{color:var(--text);background:var(--surface-2)}

/* === 响应式 === */
@media (max-width:900px){
  .main-area{padding:36px 20px 80px}
  .page-head h1{font-size:28px}
  .balance-card{padding:28px 24px}
  .balance-card .bal-num{font-size:48px}
  .card-block{padding:24px 20px}
  .rules-grid{grid-template-columns:1fr}
}