/* ===== 工具档案 资源站 · Apple 科技风原型样式 ===== */
:root{
  --bg:#FFFFFF; --bg-1:#F5F5F7; --bg-2:#FAFAFC;
  --text:#1D1D1F; --text-2:#4A4A4A; --text-3:#86868B;
  --blue:#007AFF; --purple:#7B5CFF;
  --grad:linear-gradient(120deg,#007AFF,#7B5CFF);
  --glass:rgba(255,255,255,.7);
  --glass-strong:rgba(255,255,255,.85);
  --glass-border:rgba(255,255,255,.6);
  --shadow:0 8px 30px rgba(0,0,0,.08);
  --shadow-hover:0 18px 50px rgba(0,0,0,.12);
  --radius:20px; --radius-sm:14px; --maxw:1180px;
  --font:'PingFang SC','SF Pro Display',-apple-system,BlinkMacSystemFont,'Helvetica Neue',system-ui,sans-serif;
  --font-num:'SF Mono',ui-monospace,menlo,monospace;
  --ease:cubic-bezier(.22,1,.36,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font); color:var(--text); background:var(--bg-1);
  line-height:1.7; -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
/* 柔和渐变光斑背景 */
body::before{
  content:""; position:fixed; inset:0; z-index:-1; pointer-events:none;
  background:
    radial-gradient(900px 500px at 12% -5%, rgba(0,122,255,.10), transparent 60%),
    radial-gradient(800px 480px at 95% 5%, rgba(123,92,255,.10), transparent 60%),
    linear-gradient(180deg,#FFFFFF,#F5F5F7);
}
a{color:var(--blue);text-decoration:none}
a:hover{opacity:.78}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.blue-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ===== 导航 ===== */
header.nav{position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.72);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid rgba(0,0,0,.06)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{font-size:19px;font-weight:700;letter-spacing:.3px;color:var(--text)}
.logo b{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;gap:26px;list-style:none;font-size:15px}
.nav-links a{color:var(--text-2)}
.nav-links a:hover,.nav-links a.active{color:var(--blue);opacity:1}
.search-mini{display:flex;align-items:center;background:rgba(0,0,0,.04);
  border:1px solid rgba(0,0,0,.06);border-radius:999px;padding:6px 14px}
.search-mini input{background:transparent;border:none;color:var(--text);outline:none;width:130px}
.search-mini button{background:none;border:none;color:var(--blue);cursor:pointer;font-size:14px}
.menu-toggle{display:none;background:rgba(0,0,0,.04);border:none;color:var(--text);
  border-radius:10px;padding:7px 12px;cursor:pointer;font-size:14px}

/* ===== 区块标题 ===== */
.section{padding:72px 0}
.sec-title{font-size:30px;font-weight:700;letter-spacing:-.02em;margin-bottom:26px;text-align:center}
.sec-sub{text-align:center;color:var(--text-3);margin:-14px 0 34px;font-size:16px}

/* ===== Hero ===== */
.hero{padding:96px 0 64px;text-align:center;position:relative}
.hero .eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.12em;
  color:var(--blue);background:rgba(0,122,255,.08);padding:6px 14px;border-radius:999px;margin-bottom:20px}
.hero h1{font-size:clamp(34px,6vw,60px);font-weight:700;letter-spacing:-.03em;line-height:1.1;margin-bottom:18px}
.hero p{color:var(--text-2);font-size:19px;max-width:620px;margin:0 auto 30px}
.hero-search{display:inline-flex;max-width:500px;width:100%;background:var(--glass-strong);
  backdrop-filter:blur(20px);border:1px solid var(--glass-border);border-radius:999px;
  padding:7px 7px 7px 22px;box-shadow:var(--shadow)}
.hero-search input{flex:1;background:transparent;border:none;color:var(--text);outline:none;font-size:16px}
.hero-search button{background:var(--grad);color:#fff;border:none;border-radius:999px;
  padding:12px 26px;font-weight:600;cursor:pointer;transition:.3s var(--ease)}
.hero-search button:hover{transform:scale(1.03);box-shadow:0 10px 26px rgba(0,122,255,.35)}
.hero-stats{display:flex;justify-content:center;gap:54px;margin-top:54px;flex-wrap:wrap}
.hero-stats .num{font-family:var(--font-num);font-size:34px;font-weight:700;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-stats .lab{font-size:14px;color:var(--text-3)}

/* ===== 玻璃卡片 ===== */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-5{grid-template-columns:repeat(5,1fr)}
.card{background:var(--glass);backdrop-filter:blur(25px);-webkit-backdrop-filter:blur(25px);
  border:1px solid var(--glass-border);border-radius:var(--radius);padding:18px;
  box-shadow:var(--shadow);transition:.4s var(--ease);position:relative;overflow:hidden}
.card:hover{transform:translateY(-4px) scale(1.02);box-shadow:var(--shadow-hover)}
.card .thumb{height:130px;border-radius:var(--radius-sm);margin-bottom:14px;display:flex;
  align-items:center;justify-content:center;font-weight:600;color:var(--text-3);font-size:14px;
  background:linear-gradient(135deg,rgba(0,122,255,.10),rgba(123,92,255,.10))}
.card h3{font-size:16px;font-weight:600;line-height:1.45;margin-bottom:6px}
.card h3 a{color:var(--text)}
.card .meta{font-size:13px;color:var(--text-3)}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.tag{font-size:12px;padding:4px 12px;border-radius:999px;color:var(--blue);
  background:rgba(0,122,255,.08);font-weight:500}

/* ===== 按钮 ===== */
.btn{display:inline-block;border:none;background:var(--grad);color:#fff;border-radius:var(--radius-sm);
  padding:13px 28px;font-weight:600;font-size:15px;cursor:pointer;transition:.3s var(--ease);
  box-shadow:0 8px 24px rgba(0,122,255,.28)}
.btn:hover{transform:scale(1.03);box-shadow:0 14px 34px rgba(0,122,255,.4)}
.btn-ghost{background:rgba(0,0,0,.04);color:var(--text);box-shadow:none}
.btn-ghost:hover{background:rgba(0,0,0,.07);box-shadow:none;transform:scale(1.03)}

/* ===== 二维码浮窗（PC 右侧 浅色磨砂） ===== */
.qr-float{position:fixed;right:18px;top:30%;width:160px;z-index:40;text-align:center;
  background:var(--glass-strong);backdrop-filter:blur(25px);border:1px solid var(--glass-border);
  border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}
.qr-float .qr{width:116px;height:116px;margin:8px auto;border-radius:14px;display:flex;align-items:center;
  justify-content:center;font-size:11px;color:var(--text-3);
  background:repeating-conic-gradient(#fff 0% 25%,#eef 0% 50%) 50%/10px 10px;border:1px solid rgba(0,0,0,.06)}
.qr-float p{font-size:12px;color:var(--text-3);margin-top:8px;line-height:1.5}
.qr-float .close{position:absolute;top:8px;right:12px;color:var(--text-3);cursor:pointer;font-size:16px}

/* ===== 文章页 ===== */
.breadcrumb{color:var(--text-3);font-size:13px;margin:20px 0}
.breadcrumb a{color:var(--text-3)} .breadcrumb a:hover{color:var(--blue)}
.breadcrumb span{color:var(--blue)}
.post-title{font-size:clamp(26px,4vw,38px);font-weight:700;letter-spacing:-.02em;line-height:1.25;margin-bottom:10px}
.post-meta{color:var(--text-3);font-size:13px;margin-bottom:28px}
.post-body{font-size:17px;color:var(--text-2)}
.post-body p{margin-bottom:18px;color:var(--text-2)}
.post-body h2{font-size:23px;font-weight:700;margin:32px 0 14px;color:var(--text);letter-spacing:-.01em}
.post-body img{border-radius:var(--radius-sm);margin:16px 0;box-shadow:var(--shadow);width:100%;background:var(--bg-2)}
.post-body ul,.post-body ol{margin:0 0 18px 22px;color:var(--text-2)}
.post-body li{margin-bottom:8px}

/* 下载区块（玻璃 + 蓝紫渐变描边） */
.download-box{margin:34px 0;padding:26px;border-radius:var(--radius);position:relative;
  background:linear-gradient(180deg,rgba(255,255,255,.9),rgba(245,245,247,.85));
  border:1.5px solid transparent;background-clip:padding-box;box-shadow:var(--shadow)}
.download-box::before{content:"";position:absolute;inset:0;border-radius:var(--radius);padding:1.5px;
  background:var(--grad);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.download-box h3{color:var(--blue);margin-bottom:14px;font-size:19px;font-weight:700}
.download-box ol{margin:0 0 16px 22px;color:var(--text-2)}
.download-box .kw{display:inline-flex;align-items:center;gap:10px;background:#fff;
  border:1px solid rgba(0,122,255,.35);border-radius:12px;padding:9px 16px;color:var(--blue);
  font-weight:700;font-family:var(--font-num)}
.copy-btn{background:var(--grad);border:none;color:#fff;border-radius:9px;padding:5px 12px;
  cursor:pointer;font-size:12px;font-weight:600;transition:.3s var(--ease)}
.copy-btn:hover{transform:scale(1.05)}

.relate{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:16px}
.pager{display:flex;justify-content:space-between;margin:30px 0;color:var(--text-3);font-size:14px}
.pager a{color:var(--blue)}
.actions{display:flex;gap:14px;margin:22px 0}
.action-btn{display:flex;align-items:center;gap:7px;background:var(--glass);backdrop-filter:blur(20px);
  border:1px solid var(--glass-border);color:var(--text);border-radius:999px;padding:9px 20px;
  cursor:pointer;font-size:14px;box-shadow:var(--shadow);transition:.3s var(--ease)}
.action-btn:hover{transform:scale(1.04);box-shadow:var(--shadow-hover)}
.comment-box{background:var(--glass);backdrop-filter:blur(20px);border:1px solid var(--glass-border);
  border-radius:var(--radius);padding:18px;margin-top:16px;box-shadow:var(--shadow)}
.comment-box textarea{width:100%;min-height:96px;background:#fff;border:1px solid rgba(0,0,0,.08);
  border-radius:14px;color:var(--text);padding:12px;font-family:var(--font);outline:none;resize:vertical}

/* ===== 双栏 ===== */
.layout{display:grid;grid-template-columns:1fr 300px;gap:34px;align-items:start}
.side{position:sticky;top:84px}
.side .card{margin-bottom:18px}

/* ===== 筛选 tab ===== */
.sub-tabs{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-bottom:30px}
.sub-tabs a{font-size:14px;padding:8px 18px;border-radius:999px;color:var(--text-2);
  background:rgba(0,0,0,.04);transition:.3s var(--ease)}
.sub-tabs a:hover,.sub-tabs a.active{background:var(--grad);color:#fff}

/* ===== 页脚 ===== */
footer{margin-top:80px;border-top:1px solid rgba(0,0,0,.06);padding:40px 0;
  background:rgba(255,255,255,.6);backdrop-filter:blur(20px);color:var(--text-3);font-size:14px}
.foot-links{display:flex;gap:22px;flex-wrap:wrap;margin-bottom:14px;justify-content:center}
.foot-links a{color:var(--text-2)} .foot-links a:hover{color:var(--blue)}

/* ===== 404 ===== */
.err{text-align:center;padding:110px 0}
.err h1{font-size:clamp(40px,8vw,72px);font-weight:700;letter-spacing:-.03em;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.err p{color:var(--text-3);margin:14px 0 28px;font-size:17px}

/* ===== 动画 ===== */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.show{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}
  *{animation:none!important;transition:none!important}}

/* ===== 响应式 ===== */
@media(max-width:1024px){
  .layout{grid-template-columns:1fr} .side{position:static}
  .grid-4,.grid-5{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:1440px){.qr-float{display:none}}
@media(max-width:767px){
  .nav-links{display:none;position:absolute;top:60px;left:0;right:0;flex-direction:column;
    background:rgba(255,255,255,.96);backdrop-filter:blur(20px);padding:18px 22px;gap:16px;
    border-bottom:1px solid rgba(0,0,0,.06)}
  .nav-links.open{display:flex}
  .menu-toggle{display:block}
  .hero{padding:64px 0 48px}
  .hero h1{font-size:34px}
  .grid-3,.grid-4,.grid-5{grid-template-columns:repeat(2,1fr)}
  .relate{grid-template-columns:1fr}
  .search-mini input{width:84px}
  .section{padding:56px 0}
}
@media(max-width:480px){ .grid-3,.grid-4,.grid-5{grid-template-columns:1fr} }

/* ===== 首页门户布局：参考 果核剥壳 结构，Apple 风重写 ===== */
.nav-links li{position:relative}
.dropdown{
  display:none; position:absolute; top:100%; left:0; margin-top:8px;
  background:var(--glass-strong); backdrop-filter:blur(20px);
  border:1px solid rgba(0,0,0,.06); border-radius:14px;
  box-shadow:var(--shadow); padding:8px 0; min-width:160px; z-index:60
}
.nav-links li:hover .dropdown{display:block}
.dropdown a{display:block; padding:8px 18px; color:var(--text-2); font-size:14px; white-space:nowrap}
.dropdown a:hover{color:var(--blue); background:rgba(0,122,255,.05)}

.hero-featured{margin:22px 0 34px}
.hero-featured .feat-card{
  background:var(--glass); backdrop-filter:blur(25px);
  border:1px solid var(--glass-border); border-radius:28px;
  box-shadow:var(--shadow); display:grid; grid-template-columns:1.25fr 1fr;
  overflow:hidden; transition:.4s var(--ease)
}
.hero-featured .feat-card:hover{box-shadow:var(--shadow-hover); transform:translateY(-3px)}
.feat-media{
  min-height:320px; background:linear-gradient(135deg,rgba(0,122,255,.12),rgba(123,92,255,.12));
  display:flex; align-items:center; justify-content:center; color:var(--text-3); font-size:14px
}
.feat-content{padding:38px; display:flex; flex-direction:column; justify-content:center}
.feat-content .eyebrow{display:inline-block; width:fit-content; font-size:12px; font-weight:600; letter-spacing:.12em; color:var(--blue); background:rgba(0,122,255,.08); padding:6px 14px; border-radius:999px; margin-bottom:16px}
.feat-content h2{font-size:32px; font-weight:700; line-height:1.2; margin-bottom:14px}
.feat-content p{color:var(--text-2); margin-bottom:24px}
.feat-dots{display:flex; gap:8px; margin-top:18px}
.feat-dots span{width:8px; height:8px; border-radius:50%; background:rgba(0,0,0,.12)}
.feat-dots span.active{background:var(--blue)}

/* ===== 首页头部：本周推荐 + 编辑精选 双栏 ===== */
.hero-grid{display:grid; grid-template-columns:minmax(0,1fr) 300px; gap:22px; align-items:stretch}
.editor-picks{
  background:var(--glass); backdrop-filter:blur(25px); -webkit-backdrop-filter:blur(25px);
  border:1px solid var(--glass-border); border-radius:28px; padding:22px 20px;
  box-shadow:var(--shadow); display:flex; flex-direction:column
}
.ep-head{display:flex; align-items:center; gap:8px; font-size:15px; font-weight:700; margin-bottom:16px; color:var(--text)}
.ep-dot{width:8px; height:8px; border-radius:50%; background:var(--grad); box-shadow:0 0 0 4px rgba(0,122,255,.12)}
.ep-item{display:flex; flex-direction:column; gap:6px; padding:13px 12px; border-radius:14px;
  text-decoration:none; transition:.3s var(--ease); border:1px solid transparent}
.ep-item:hover{background:rgba(0,122,255,.05); border-color:rgba(0,122,255,.12); transform:translateX(2px)}
.ep-tag{align-self:flex-start; font-size:11px; font-weight:600; color:var(--blue);
  background:rgba(0,122,255,.08); padding:3px 10px; border-radius:999px}
.ep-title{font-size:14px; font-weight:600; line-height:1.45; color:var(--text)}
.ep-meta{font-size:12px; color:var(--text-3)}
.ep-more{margin-top:auto; padding-top:14px; font-size:13px; color:var(--blue); text-align:right; font-weight:600}

.feature-strip{
  margin:22px 0 34px; background:linear-gradient(100deg,#EAF3FF,#F3EEFF);
  border-radius:20px; padding:22px 30px; display:flex; align-items:center; justify-content:space-between;
  box-shadow:var(--shadow)
}
.feature-strip h3{font-size:18px; font-weight:700}
.feature-strip p{color:var(--text-3); font-size:14px; margin-top:4px}
.feature-strip .btn{margin-left:16px; flex-shrink:0}

.portal{display:grid; grid-template-columns:1fr 320px; gap:28px; align-items:start}
.main-col{min-width:0}
.sidebar{position:sticky; top:84px}
.widget{
  background:var(--glass); backdrop-filter:blur(25px); border:1px solid var(--glass-border);
  border-radius:var(--radius); padding:18px; margin-bottom:20px; box-shadow:var(--shadow)
}
.widget h3{font-size:15px; font-weight:700; margin-bottom:12px}
.widget p{font-size:13px; color:var(--text-3); line-height:1.6}
.announce{list-style:none; padding:0; margin:0}
.announce li{font-size:13px; color:var(--text-2); margin-bottom:10px; padding-left:14px; position:relative}
.announce li::before{content:""; position:absolute; left:0; top:9px; width:5px; height:5px; border-radius:50%; background:var(--blue)}
.announce li span{color:var(--text-3); margin-right:6px}

.section-header{display:flex; align-items:center; justify-content:space-between; margin-bottom:18px}
.section-header h2{margin:0}
.section-header a{font-size:14px; color:var(--blue)}

@media(max-width:1024px){
  .hero-featured .feat-card{grid-template-columns:1fr}
  .feat-media{min-height:200px}
  .hero-grid{grid-template-columns:1fr}
  .portal{grid-template-columns:1fr}
  .sidebar{position:static; margin-top:20px}
  .nav-links .dropdown{position:static; display:none; box-shadow:none; border:none; background:transparent; padding:0; margin:0}
  .nav-links li:hover .dropdown{display:none}
}
@media(max-width:767px){
  .feat-content{padding:24px}
  .feat-content h2{font-size:24px}
  .feature-strip{flex-direction:column; align-items:flex-start; gap:14px}
  .feature-strip .btn{margin-left:0}
}

/* ===== 交互增强与组件样式（新增） ===== */

/* 顶部搜索+菜单容器 */
.nav-right{display:flex; gap:10px; align-items:center}

/* 页面载入过渡（仅 JS 可用时启用，CSS 动画自动播放，不依赖 JS 执行） */
.js body{animation:ta-fade .5s var(--ease) both}
@keyframes ta-fade{from{opacity:0; transform:translateY(10px)} to{opacity:1; transform:none}}

/* 按钮点击反馈 */
.btn:active{transform:scale(.97)}
.action-btn:active{transform:scale(.97)}
.card:active{transform:translateY(-2px) scale(1.01)}
.action-btn.on{background:var(--grad); color:#fff; box-shadow:0 8px 24px rgba(0,122,255,.28)}

/* 截图占位（自包含，避免外链，离线可用） */
.shot{margin:16px 0; border-radius:var(--radius-sm); overflow:hidden; aspect-ratio:16/9;
  background:linear-gradient(135deg,rgba(0,122,255,.10),rgba(123,92,255,.10));
  display:flex; align-items:center; justify-content:center; color:var(--text-3); font-size:14px;
  box-shadow:var(--shadow); text-align:center; padding:14px}
.shot span{opacity:.85}

/* 文章页点赞/收藏区微调 */
.actions{gap:14px; margin:22px 0}
.action-btn{cursor:pointer; user-select:none}

/* 下载卡片关键词 */
.download-box .kw{font-family:var(--font-num)}
.copy-btn{cursor:pointer}

/* 评论区 */
.comment-empty{color:var(--text-3); font-size:14px; padding:14px 0}
.comment-list{margin-top:14px; display:flex; flex-direction:column; gap:14px}
.comment-item{background:var(--glass); backdrop-filter:blur(20px); border:1px solid var(--glass-border);
  border-radius:var(--radius-sm); padding:14px 16px; box-shadow:var(--shadow)}
.comment-meta{display:flex; align-items:center; gap:8px; font-size:13px; color:var(--text-2); margin-bottom:6px}
.comment-meta .c-avatar{width:26px; height:26px; border-radius:50%; display:flex; align-items:center;
  justify-content:center; background:rgba(0,122,255,.10); font-size:14px}
.comment-meta time{margin-left:auto; color:var(--text-3); font-size:12px}
.comment-item p{color:var(--text-2); font-size:14px; line-height:1.6}

/* 搜索结果 */
.search-card{display:flex; gap:16px; align-items:flex-start; text-decoration:none; padding:16px}
.search-card .thumb{width:64px; height:64px; flex-shrink:0; margin-bottom:0; font-size:13px}
.sc-body{flex:1; min-width:0}
.sc-body h3{font-size:16px; font-weight:600; color:var(--text); margin-bottom:4px}
.sc-desc{font-size:13px; color:var(--text-3); margin-bottom:8px; line-height:1.5}
.search-head{margin:8px 0 18px}
.search-head input{width:100%; background:rgba(0,0,0,.04); border:1px solid rgba(0,0,0,.06);
  border-radius:999px; padding:13px 20px; font-size:15px; color:var(--text); outline:none}
.search-head input:focus{border-color:var(--blue); background:#fff}
#searchCount{display:block; font-size:13px; color:var(--text-3); margin-top:10px}

/* 页脚版权 */
.copyright{font-size:13px; color:var(--text-3); margin-top:6px}

/* Toast */
.ta-toast{position:fixed; left:50%; bottom:32px; transform:translateX(-50%) translateY(20px);
  background:rgba(29,29,31,.92); color:#fff; font-size:14px; padding:11px 20px; border-radius:999px;
  box-shadow:0 10px 30px rgba(0,0,0,.25); opacity:0; pointer-events:none; z-index:80;
  transition:opacity .3s var(--ease), transform .3s var(--ease)}
.ta-toast.show{opacity:1; transform:translateX(-50%) translateY(0)}

/* 性能：下方卡片延迟渲染 */
.card{content-visibility:auto; contain-intrinsic-size:auto 300px}
@media(prefers-reduced-motion:reduce){
  .js body{animation:none}
  *{animation-duration:.001ms!important; transition-duration:.001ms!important}
}