/* ================================================================
   docs.css - 技术文档列表页【科技风美化升级版】
   ================================================================ */
:root{
  --ac:#4f7df9;--ac2:#6b92f8;--ac-bg:#f0f5ff;--ac-glow:rgba(79,125,249,.15);
  --pu:#7c3aed;--gn:#10b981;--or:#f97316;--rd:#ef4444;--pk:#ec4899;
  --dark:#0f172a;--d2:#1e293b;--text:#334155;--muted:#64748b;--faint:#94a3b8;
  --white:#fff;--bg:#f8fafc;--bg2:#f1f5f9;--border:#e2e8f0;--shadow:rgba(15,23,42,.06);
  --r1:16px;--r2:10px;--r3:6px;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Noto Sans SC',-apple-system,BlinkMacSystemFont,Helvetica,sans-serif;color:var(--text);background:var(--bg);line-height:1.7}

/* 滚动条 */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--faint)}

/* 基础动画 */
@keyframes fadeUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}
@keyframes slideLeft{from{opacity:0;transform:translateX(-16px)}to{opacity:1;transform:translateX(0)}}
@keyframes slideUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
@keyframes shimmer{0%{background-position:-200% 0}100%{background-position:200% 0%}}
@keyframes dotPulse{0%,100%{transform:scale(1)}50%{transform:scale(1.4)}}
@keyframes techScan{0%{background-position:0 -100%}100%{background-position:0 100%}}
@keyframes techLine{0%{width:0}100%{width:100%}}
@keyframes glowPulse{0%{box-shadow:0 0 18px rgba(79,125,249,0.2)}50%{box-shadow:0 0 28px rgba(79,125,249,0.35)}100%{box-shadow:0 0 18px rgba(79,125,249,0.2)}}

.anim{opacity:0}
.anim.visible{animation:fadeUp .45s ease forwards}

/* ================================================================ */
/* Banner 科技风强化
/* ================================================================ */
.docs-banner{
  padding:150px 48px 44px;
  background:linear-gradient(150deg,#0f172a 0%,#1e293b 45%,#0f2d52 100%);
  position:relative;overflow:hidden;
}
.docs-banner::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(ellipse 60% 80% at 80% 20%,rgba(79,125,249,.12),transparent),
              radial-gradient(ellipse 50% 60% at 20% 80%,rgba(124,58,237,.1),transparent);
}
.docs-banner::after{
  content:'';position:absolute;bottom:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(79,125,249,.4),transparent);
}
.docs-banner-glow{
  position:absolute;border-radius:50%;pointer-events:none;
}
.docs-banner-glow.g1{
  width:420px;height:420px;background:radial-gradient(circle,#4f7df9,transparent 70%);
  filter:blur(90px);opacity:.18;top:-140px;right:-80px;animation:glowPulse 6s infinite ease-in-out;
}
.docs-banner-glow.g2{
  width:300px;height:300px;background:radial-gradient(circle,#7c3aed,transparent 70%);
  filter:blur(80px);opacity:.14;bottom:-100px;left:-60px;animation:glowPulse 7s infinite reverse ease-in-out;
}
.docs-banner-cnt{
  max-width:1200px;margin:0 auto;position:relative;z-index:1;
  display:flex;align-items:center;gap:24px;
}
.docs-banner-icon{
  width:60px;height:60px;border-radius:var(--r1);
  background:linear-gradient(135deg,rgba(79,125,249,.25),rgba(124,58,237,.2));
  border:1.5px solid rgba(79,125,249,.35);
  backdrop-filter:blur(10px);
  display:flex;align-items:center;justify-content:center;
  font-size:30px;color:#6b92f8;
  animation:slideLeft .5s cubic-bezier(.34,1.3,.64,1);
  flex-shrink:0;
  position:relative;
}
.docs-banner-icon::after{
  content:'';position:absolute;inset:0;border-radius:var(--r1);
  border:1px solid rgba(255,255,255,0.1);
  clip:rect(0,80px,60px,0);
  animation:techLine 1.2s .3s ease both;
}
.docs-banner-title{font-size:38px;font-weight:900;color:var(--white);line-height:1.2;margin-bottom:8px;letter-spacing:-.5px}
.docs-banner-title span{
  background:linear-gradient(90deg,#6b92f8,#a78bfa);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
}
.docs-banner-desc{font-size:14px;color:rgba(255,255,255,.5);display:flex;align-items:center;gap:6px}
.docs-banner-desc::before{content:'';display:inline-block;width:20px;height:1.5px;background:rgba(79,125,249,.5)}

/* ================================================================ */
/* 分类 Tab - 科技线条动画
/* ================================================================ */
.docs-tabs{
  background:var(--white);
  border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:100;
  box-shadow:0 1px 0 var(--border);
}
.docs-tabs-inner{
  max-width:1200px;margin:0 auto;padding:0 48px;
  display:flex;align-items:center;gap:2px;overflow-x:auto;scrollbar-width:none;
}
.docs-tabs-inner::-webkit-scrollbar{display:none}
.docs-tab{
  display:flex;align-items:center;gap:6px;
  padding:13px 18px;background:none;border:none;
  font-size:13px;font-weight:500;color:var(--muted);cursor:pointer;
  transition:color .2s,font-weight .2s;
  white-space:nowrap;flex-shrink:0;font-family:inherit;
  position:relative;
}
.docs-tab i{font-size:14px;transition:transform .2s}
.docs-tab:hover{color:var(--ac)}
.docs-tab:hover i{transform:scale(1.15)}
.docs-tab::after{
  content:'';position:absolute;bottom:0;left:50%;width:0;height:2.5px;
  background:linear-gradient(90deg,var(--ac),var(--pu));
  border-radius:2px 2px 0 0;
  transition:width .3s cubic-bezier(.34,1.2,.64,1),left .3s cubic-bezier(.34,1.2,.64,1);
}
.docs-tab:hover::after{width:60%;left:20%}
.docs-tab.active{color:var(--ac);font-weight:700}
.docs-tab.active::after{width:100%;left:0}
.docs-tab:active{transform:scale(.96)}

/* ================================================================ */
/* 搜索栏 - 科技聚焦动画
/* ================================================================ */
.docs-search{background:var(--white);border-bottom:1px solid var(--border)}
.docs-search-inner{
  max-width:1200px;margin:0 auto;padding:0 48px;
  display:flex;align-items:center;gap:10px;
  height:52px;
  position:relative;
}
.docs-search-inner i{font-size:17px;color:var(--faint);flex-shrink:0;transition:color .2s}
.docs-search-inner input{
  flex:1;border:none;background:none;outline:none;
  font-size:14px;color:var(--dark);font-family:inherit;line-height:1;
}
.docs-search-inner input::placeholder{color:var(--faint)}
.docs-search-inner input:focus + i{color:var(--ac)}
.docs-search-inner kbd{
  padding:3px 9px;background:var(--bg2);border:1px solid var(--border);
  border-radius:5px;font-size:11px;color:var(--muted);font-family:inherit;
  flex-shrink:0;line-height:1.4;
  transition:all .2s;
}
.docs-search-inner input:focus ~ kbd{
  border-color:var(--ac);color:var(--ac);background:rgba(79,125,249,0.05)
}

/* ================================================================ */
/* 文档列表 - 科技扫描线 + 悬停光效
/* ================================================================ */
.docs-list-section{padding:24px 0 64px}
.docs-list-inner{max-width:1200px;margin:0 auto;padding:0 48px}

/* 统计栏 */
.docs-stats{
  display:flex;align-items:center;justify-content:space-between;
  margin-bottom:16px;padding:8px 0;
}
.docs-stats-count{font-size:13px;color:var(--muted)}
.docs-stats-count strong{color:var(--ac);font-weight:800}
.docs-stats-filter{display:flex;align-items:center;gap:8px}
.docs-stats-filter-label{font-size:12px;color:var(--faint);display:flex;align-items:center;gap:4px}
.docs-stats-filter-btn{
  padding:4px 13px;border:1.5px solid var(--border);border-radius:20px;
  background:none;font-size:11.5px;font-weight:500;color:var(--muted);
  cursor:pointer;transition:all .2s;font-family:inherit;
}
.docs-stats-filter-btn:hover{border-color:var(--ac);color:var(--ac)}
.docs-stats-filter-btn.active{background:var(--ac);border-color:var(--ac);color:#fff;font-weight:600}

/* 文档列表 */
.docs-list{display:flex;flex-direction:column;gap:8px}
.docs-item{
  display:flex;align-items:flex-start;gap:16px;
  padding:14px 18px;background:var(--white);
  border:1px solid var(--border);border-radius:var(--r1);
  text-decoration:none;color:inherit;
  transition:border-color .25s,box-shadow .25s,transform .3s cubic-bezier(.34,1.2,.64,1);
  animation:slideUp .35s ease both;
  position:relative;
  overflow:hidden;
}
.docs-item::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(to bottom,transparent,rgba(79,125,249,0.03),transparent);
  background-size:100% 200%;
  opacity:0;transition:opacity .3s;
}
.docs-item:hover::before{opacity:1;animation:techScan 2s linear infinite}
.docs-item:hover{
  border-color:var(--ac);
  box-shadow:0 4px 20px rgba(79,125,249,.1),0 0 0 2px var(--ac-glow);
  transform:translateX(5px);
}
.docs-item:nth-child(1){animation-delay:.04s}
.docs-item:nth-child(2){animation-delay:.08s}
.docs-item:nth-child(3){animation-delay:.12s}
.docs-item:nth-child(4){animation-delay:.16s}
.docs-item:nth-child(5){animation-delay:.2s}
.docs-item:nth-child(n+6){animation-delay:.24s}

/* 缩略图 */
.docs-item-thumb{
  width:78px;height:58px;border-radius:8px;overflow:hidden;flex-shrink:0;
  background:var(--bg2);border:1px solid var(--border);
  transition:border-color .25s,box-shadow .25s;
}
.docs-item:hover .docs-item-thumb{border-color:rgba(79,125,249,.3);box-shadow:0 0 0 1px rgba(79,125,249,.15)}
.docs-item-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.docs-item-thumb-placeholder{
  width:100%;height:100%;display:flex;align-items:center;justify-content:center;
  color:var(--faint);font-size:22px;
}

/* 内容 */
.docs-item-body{flex:1;min-width:0}
.docs-item-row{
  display:flex;align-items:center;justify-content:space-between;
  margin-bottom:5px;gap:8px;
}
.docs-item-cat{
  display:inline-flex;align-items:center;gap:4px;
  padding:2px 9px;background:var(--ac-bg);color:var(--ac);
  border-radius:4px;font-size:10px;font-weight:700;letter-spacing:.3px;
  position:relative;
}
.docs-item-cat::after{
  content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:10px;background:var(--ac);border-radius:1px;
}
.docs-item-date{font-size:11px;color:var(--faint);display:flex;align-items:center;gap:3px;flex-shrink:0}
.docs-item-title{
  font-size:14.5px;font-weight:700;color:var(--dark);
  line-height:1.45;margin-bottom:4px;
  transition:color .2s;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.docs-item:hover .docs-item-title{color:var(--ac)}
.docs-item-desc{
  font-size:12px;color:var(--muted);line-height:1.65;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:6px;
}
.docs-item-tags{
  display:flex;align-items:center;gap:10px;font-size:11px;color:var(--faint);
}
.docs-item-tags span{display:flex;align-items:center;gap:3px}
.docs-item-arrow{
  color:var(--ac);font-weight:600;opacity:0;
  transform:translateX(-6px);transition:opacity .25s,transform .25s;
}
.docs-item:hover .docs-item-arrow{opacity:1;transform:translateX(0)}

/* ================================================================ */
/* 分页 - 科技按钮
/* ================================================================ */
.docs-pager{
  display:flex;justify-content:center;align-items:center;gap:4px;
  padding:32px 0 0;flex-wrap:wrap;
}
.docs-pager a,.docs-pager span{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:36px;height:36px;padding:0 6px;
  background:var(--white);border:1px solid var(--border);
  border-radius:var(--r2);font-size:13px;color:var(--text);
  text-decoration:none;transition:all .2s;
}
.docs-pager a:hover{background:var(--ac);color:#fff;border-color:var(--ac);box-shadow:0 0 10px rgba(79,125,249,0.15)}
.docs-pager .page-break{background:none;border:none;color:var(--faint);cursor:default}
.docs-pager .page-current,.docs-pager .active{
  background:var(--ac);color:#fff;border-color:var(--ac);font-weight:700;
  box-shadow:0 0 12px rgba(79,125,249,0.25)
}

/* ================================================================ */
/* CTA 科技渐变
/* ================================================================ */
.docs-cta{
  background:linear-gradient(135deg,#0f172a,#1e3a6e);
  padding:60px 48px;text-align:center;position:relative;overflow:hidden;
}
.docs-cta::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(ellipse 60% 80% at 50% 100%,rgba(79,125,249,.15),transparent);
}
.docs-cta-inner{position:relative;z-index:1;animation:fadeUp .5s .2s both}
.docs-cta h2{font-size:26px;font-weight:900;color:var(--white);margin-bottom:8px;letter-spacing:-.3px}
.docs-cta p{font-size:14px;color:rgba(255,255,255,.55);margin-bottom:24px}
.docs-cta-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 30px;background:var(--ac);color:#fff;
  border-radius:10px;font-size:14px;font-weight:700;text-decoration:none;
  transition:all .3s;position:relative;overflow:hidden;
  box-shadow:0 4px 16px rgba(79,125,249,.35);
}
.docs-cta-btn::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,0.1),transparent);
  background-size:200% 100%;animation:shimmer 3s infinite;
}
.docs-cta-btn:hover{background:#3a6ce8;transform:translateY(-2px);box-shadow:0 8px 28px rgba(79,125,249,.45)}

/* ================================================================ */
/* 响应式
/* ================================================================ */
@media(max-width:1024px){
  .docs-list-inner,.docs-tabs-inner,.docs-search-inner{padding:0 24px}
  .docs-banner{padding:72px 24px 40px}
  .docs-banner-title{font-size:30px}
}
@media(max-width:768px){
  .docs-list-inner,.docs-tabs-inner,.docs-search-inner{padding:0 16px}
  .docs-search-inner{padding:0 16px}
  .docs-banner{padding:64px 16px 36px}
  .docs-banner-icon{width:48px;height:48px;font-size:24px}
  .docs-banner-title{font-size:24px}
  .docs-item{padding:12px 14px}
  .docs-item-thumb{width:64px;height:48px}
  .docs-item-desc{display:none}
  .docs-stats{flex-direction:column;gap:8px;align-items:flex-start}
  .docs-stats-filter{gap:6px}
  .docs-cta{padding:44px 24px}
}