/* ============================================================
   Upskill — upskill.jobbolster.com 全站样式表 v1.0
   主色 #247869。移动优先。所有页面共用本文件，禁止页面内覆盖。
   ============================================================ */

/* ---------- 1. Reset & tokens ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#247869;
  --primary-dark:#1b5c4f;
  --primary-deep:#123f38;
  --primary-tint:#eaf3f0;
  --accent:#c9822d;
  --ink:#172421;
  --muted:#5c6b66;
  --bg:#f7faf9;
  --card-line:#e3ece8;
  --white:#ffffff;
  --danger:#b3402e;
  --danger-tint:#fdf0ee;
  --radius:14px;
  --radius-sm:9px;
  --shadow:0 2px 10px rgba(18,63,56,.08);
  --shadow-lg:0 10px 30px rgba(18,63,56,.14);
  --overlay:linear-gradient(160deg, rgba(18,63,56,.05) 0%, rgba(18,63,56,.82) 78%);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.25;font-weight:700;color:var(--primary-deep);overflow-wrap:break-word}
h1{font-size:clamp(1.7rem,4vw,2.5rem);letter-spacing:-.01em}
h2{font-size:clamp(1.35rem,3vw,1.8rem);margin:2rem 0 .8rem}
h3{font-size:1.15rem;margin:1.4rem 0 .5rem}
p{margin:0 0 1rem}
ul,ol{margin:0 0 1rem 1.2rem}
li{margin-bottom:.35rem}
.container{max-width:1180px;margin:0 auto;padding:0 20px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- 2. Header & nav ---------- */
.site-header{position:sticky;top:0;z-index:50;background:var(--white);border-bottom:1px solid var(--card-line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:60px;gap:12px}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:1.15rem;color:var(--primary-deep)}
.brand:hover{text-decoration:none}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:9px;background:var(--primary);color:#fff;font-weight:800;font-size:1.05rem}
.brand-name{white-space:nowrap}
@media (max-width:400px){.brand{font-size:1rem;gap:7px}.brand-mark{width:30px;height:30px}}
.site-nav{display:none;flex-direction:column;position:absolute;top:60px;left:0;right:0;background:var(--white);border-bottom:1px solid var(--card-line);padding:8px 20px 14px;gap:2px}
.site-nav.open{display:flex}
.site-nav a{color:var(--ink);font-weight:500;padding:10px 4px;border-radius:8px}
.site-nav a:hover{background:var(--primary-tint);color:var(--primary-dark);text-decoration:none}
.site-nav .nav-lang{margin-top:8px;padding-top:10px;border-top:1px solid var(--card-line);display:flex;gap:10px;font-size:.95rem}
.site-nav .nav-lang a{font-weight:600;color:var(--muted);padding:4px 6px}
.site-nav .nav-lang a.is-active{color:var(--primary);font-weight:800}
.nav-toggle{display:flex;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;background:none;border:0;cursor:pointer;padding:10px}
.nav-toggle span{display:block;height:2px;width:22px;background:var(--primary-deep);border-radius:2px;transition:transform .18s ease,opacity .18s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media (min-width:768px){
  .nav-toggle{display:none}
  .site-nav{display:flex;flex-direction:row;position:static;border:0;padding:0;gap:4px;align-items:center}
  .site-nav a{padding:8px 12px}
  .site-nav .nav-lang{margin:0;padding:0;border:0;gap:6px}
}

/* ---------- 3. Footer ---------- */
.site-footer{background:var(--primary-deep);color:#cfe0da;margin-top:4rem;padding:3rem 0 1.5rem}
.footer-grid{display:grid;grid-template-columns:1fr;gap:2rem;margin-bottom:2rem}
@media (min-width:768px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1fr;gap:3rem}}
.site-footer h4{color:#fff;font-size:.95rem;margin:0 0 .8rem;letter-spacing:.02em}
.site-footer a{display:block;color:#cfe0da;padding:3px 0;font-size:.92rem}
.site-footer a:hover{color:#fff}
.footer-brand{color:#fff;font-weight:800;font-size:1.1rem;margin-bottom:.5rem}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding-top:1.2rem;font-size:.82rem;color:#9db8b0;margin:0}

/* ---------- 4. Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--primary);color:#fff;border:0;border-radius:var(--radius-sm);padding:.8rem 1.4rem;font-weight:600;font-size:1rem;font-family:var(--font);cursor:pointer;line-height:1.2;min-height:46px;transition:background .15s ease,transform .1s ease}
.btn:hover{background:var(--primary-dark);text-decoration:none;color:#fff}
.btn:active{transform:translateY(1px)}
.btn-outline{background:transparent;color:var(--primary);border:1.5px solid var(--primary)}
.btn-outline:hover{background:var(--primary-tint);color:var(--primary-dark)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#b06f1f;color:#fff}
.btn-danger{background:var(--danger);color:#fff}
.btn-sm{padding:.45rem .9rem;min-height:38px;font-size:.88rem}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* ---------- 5. Cards ---------- */
.card{display:block;background:var(--white);border:1px solid var(--card-line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);text-decoration:none;color:var(--ink);transition:transform .15s ease,box-shadow .15s ease;position:relative}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);text-decoration:none;color:var(--ink)}
.card-media{position:relative;aspect-ratio:3/2;overflow:hidden;background:var(--primary-tint)}
.card-media img{width:100%;height:100%;object-fit:cover}
.card-media::after{content:"";position:absolute;inset:0;background:var(--overlay)}
.card-badge{position:absolute;left:12px;bottom:10px;color:#fff;font-size:.72rem;font-weight:600;letter-spacing:.05em;text-transform:uppercase;z-index:1}
.card-body{padding:14px 16px 16px}
.card-title{font-size:1.02rem;margin:0 0 6px;color:var(--primary-deep)}
.card-desc{font-size:.9rem;color:var(--muted);margin:0 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-cta{font-size:.85rem;font-weight:700;color:var(--primary)}
.card:hover .card-cta{color:var(--primary-dark)}
.tool-grid{display:grid;grid-template-columns:1fr;gap:18px;margin:1.5rem 0}
@media (min-width:768px){.tool-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.tool-grid{grid-template-columns:repeat(3,1fr)}}
.tool-grid .card{height:100%}
/* 工具页/文章页内的收藏心形按钮 */
.fav-btn{position:absolute;top:10px;right:10px;z-index:2;width:40px;height:40px;border-radius:50%;border:0;background:rgba(255,255,255,.92);cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow);transition:transform .12s ease}
.fav-btn:hover{transform:scale(1.08)}
.fav-btn svg{width:20px;height:20px;fill:none;stroke:var(--primary-dark);stroke-width:2}
.fav-btn.is-faved svg{fill:var(--danger);stroke:var(--danger)}
.fav-btn[aria-pressed="true"]{background:var(--danger-tint)}

/* ---------- 6. Hero ---------- */
.hero{position:relative;border-radius:0 0 var(--radius) var(--radius);overflow:hidden;color:#fff;background:var(--primary-deep)}
.hero-media{position:absolute;inset:0}
.hero-media img{width:100%;height:100%;object-fit:cover;object-position:center}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg, rgba(18,63,56,.88) 0%, rgba(18,63,56,.55) 55%, rgba(18,63,56,.28) 100%)}
.hero-content{position:relative;z-index:1;padding:3.2rem 0;max-width:640px}
.hero-content h1{color:#fff;margin-bottom:.8rem}
.hero-content p{font-size:1.06rem;color:#e4efeb;margin-bottom:1.4rem}
.hero-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);color:#fff;border-radius:999px;padding:4px 12px;font-size:.78rem;font-weight:600;letter-spacing:.03em;margin-bottom:1rem}

/* ---------- 7. Section headers / category ---------- */
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin:2.6rem 0 .2rem}
.section-head h2{margin:0}
.section-head .section-link{font-size:.9rem;font-weight:600;white-space:nowrap}
.cat-strip{display:grid;grid-template-columns:1fr;gap:14px;margin:1.2rem 0 0}
@media (min-width:768px){.cat-strip{grid-template-columns:repeat(5,1fr)}}
.cat-card{position:relative;border-radius:var(--radius);overflow:hidden;min-height:120px;display:flex;align-items:flex-end;padding:16px;color:#fff;font-weight:700;font-size:1rem;background:var(--primary-deep)}
.cat-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.cat-card::after{content:"";position:absolute;inset:0;background:var(--overlay)}
.cat-card span{position:relative;z-index:1}
.cat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);color:#fff;text-decoration:none}

/* ---------- 8. Breadcrumb ---------- */
.breadcrumb{font-size:.85rem;color:var(--muted);padding:14px 0 0;list-style:none;display:flex;flex-wrap:wrap;gap:6px;margin:0}
.breadcrumb li{display:flex;align-items:center;gap:6px;margin:0}
.breadcrumb li+li::before{content:"/";color:var(--card-line)}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb [aria-current]{color:var(--ink);font-weight:600}

/* ---------- 9. Tool page ---------- */
.tool-header{margin:1.6rem 0 1.2rem}
.tool-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:.8rem}
.tool-meta .chip{background:var(--primary-tint);color:var(--primary-dark);border-radius:999px;padding:3px 12px;font-size:.78rem;font-weight:600}
.tool-shell{background:var(--white);border:1px solid var(--card-line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;margin-bottom:1.6rem}
@media (min-width:768px){.tool-shell{padding:30px}}
.tool-shell h2{margin-top:0}
.form-group{margin-bottom:1.1rem}
.form-group label{display:block;font-weight:600;font-size:.95rem;margin-bottom:6px;color:var(--primary-deep)}
.form-group .hint{font-size:.82rem;color:var(--muted);margin-top:3px}
.form-group input[type=text],.form-group input[type=number],.form-group textarea,.form-group select{width:100%;padding:12px 14px;border:1.5px solid var(--card-line);border-radius:var(--radius-sm);font-size:16px;font-family:var(--font);background:var(--white);color:var(--ink);transition:border-color .15s ease}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--primary)}
.form-group textarea{min-height:120px;resize:vertical;line-height:1.6}
.form-group select{appearance:auto;min-height:48px}
.radio-row,.check-row{display:flex;flex-wrap:wrap;gap:10px}
.radio-item,.check-item{display:flex;align-items:flex-start;gap:8px;background:var(--bg);border:1.5px solid var(--card-line);border-radius:var(--radius-sm);padding:10px 14px;cursor:pointer;transition:border-color .15s ease,background .15s ease;min-height:44px}
.radio-item:hover,.check-item:hover{border-color:var(--primary)}
.radio-item input,.check-item input{accent-color:var(--primary);width:18px;height:18px;margin-top:3px;flex:none}
.radio-item.selected,.check-item.selected{border-color:var(--primary);background:var(--primary-tint)}
.result-box{display:none;margin-top:1.4rem;border-top:1px solid var(--card-line);padding-top:1.4rem}
.result-box.show{display:block}
.score-hero{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:1rem}
.score-big{font-size:2.6rem;font-weight:800;color:var(--primary);line-height:1}
.score-label{color:var(--muted);font-size:.85rem}
.risk-low{color:#2e7d4f}.risk-moderate{color:#c9822d}.risk-high{color:#c05a2a}.risk-critical{color:var(--danger)}
.alert{background:var(--danger-tint);border:1px solid #f0cfc8;color:#7c2f22;border-radius:var(--radius-sm);padding:14px 16px;font-size:.92rem;margin:1rem 0}
.alert strong{display:block;margin-bottom:2px}
.notice{background:var(--primary-tint);border:1px solid #c9e0d8;color:var(--primary-deep);border-radius:var(--radius-sm);padding:12px 16px;font-size:.9rem;margin:1rem 0}
.local-note{display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--muted);margin:1rem 0 0}
.local-note svg{width:16px;height:16px;stroke:var(--primary);flex:none}
.data-table{width:100%;border-collapse:collapse;table-layout:fixed;margin:1rem 0;font-size:.92rem}
.data-table th,.data-table td{border:1px solid var(--card-line);padding:10px 12px;text-align:left;vertical-align:top;overflow-wrap:break-word}
.data-table th{background:var(--primary-tint);color:var(--primary-deep);font-weight:700}
.data-table tr:nth-child(even) td{background:#fbfdfc}
@media (max-width:640px){.data-table{font-size:.85rem}.data-table th,.data-table td{padding:8px}}

/* ---------- 10. Articles ---------- */
.article-wrap{max-width:760px;margin:0 auto}
.article-header{margin:1.6rem 0 1.2rem}
.article-header .article-meta{display:flex;flex-wrap:wrap;gap:10px;color:var(--muted);font-size:.86rem;margin-top:.6rem;align-items:center}
.article-header .article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--muted)}
.byline{display:flex;align-items:center;gap:10px;margin:1.2rem 0;font-size:.9rem;color:var(--muted)}
.byline .avatar{width:40px;height:40px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.article-body h2{margin-top:2.4rem}
.article-body h3{margin-top:1.6rem}
.article-body ul,.article-body ol{margin-bottom:1.2rem}
.article-body blockquote{border-left:4px solid var(--primary);background:var(--primary-tint);padding:12px 18px;border-radius:0 var(--radius-sm) var(--radius-sm) 0;margin:1.2rem 0;color:var(--primary-deep)}
.article-body .inline-tool{margin:1.6rem 0}
.article-body a{font-weight:500}
.article-toc{background:var(--white);border:1px solid var(--card-line);border-radius:var(--radius);padding:16px 20px;margin:1.4rem 0;font-size:.92rem}
.article-toc h3{margin:0 0 8px;font-size:.95rem}
.article-toc ol{margin:0 0 0 1.1rem}
.article-toc a{color:var(--ink)}
.article-toc a:hover{color:var(--primary)}

/* ---------- 11. FAQ ---------- */
.faq-list{list-style:none;margin:0;padding:0}
.faq-list li{border:1px solid var(--card-line);border-radius:var(--radius-sm);background:var(--white);margin-bottom:10px;overflow:hidden}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;text-align:left;background:none;border:0;padding:14px 16px;font-size:.97rem;font-weight:600;color:var(--primary-deep);font-family:var(--font);cursor:pointer;min-height:48px}
.faq-q svg{width:16px;height:16px;stroke:var(--primary);flex:none;transition:transform .15s ease}
.faq-list li.open .faq-q svg{transform:rotate(180deg)}
.faq-a{display:none;padding:0 16px 14px;font-size:.93rem;color:var(--ink)}
.faq-list li.open .faq-a{display:block}
.faq-a p{margin-bottom:.6rem}

/* ---------- 12. Cookie banner ---------- */
.cookie-bar{position:fixed;left:0;right:0;bottom:0;z-index:100;background:var(--primary-deep);color:#e8f2ef;padding:16px 20px;box-shadow:0 -4px 20px rgba(0,0,0,.2);display:none}
.cookie-bar.show{display:block}
.cookie-inner{max-width:1180px;margin:0 auto;display:flex;flex-direction:column;gap:12px;font-size:.9rem}
@media (min-width:768px){.cookie-inner{flex-direction:row;align-items:center;justify-content:space-between}}
.cookie-inner a{color:#8fd0c0;text-decoration:underline}
.cookie-actions{display:flex;gap:10px;flex-wrap:wrap}
.cookie-actions .btn{min-height:42px;padding:.55rem 1.1rem;font-size:.88rem}

/* ---------- 13. Misc ---------- */
.prose{max-width:72ch}
.center{text-align:center}
.mt-1{margin-top:1rem}.mt-2{margin-top:2rem}.mb-1{margin-bottom:1rem}.mb-2{margin-bottom:2rem}
.callout{background:var(--white);border:1px solid var(--card-line);border-left:4px solid var(--primary);border-radius:var(--radius-sm);padding:16px 18px;margin:1.2rem 0}
.callout strong{color:var(--primary-deep)}
.step-list{counter-reset:step;list-style:none;margin:1rem 0}
.step-list li{counter-increment:step;position:relative;padding-left:44px;margin-bottom:12px}
.step-list li::before{content:counter(step);position:absolute;left:0;top:0;width:30px;height:30px;border-radius:50%;background:var(--primary);color:#fff;font-weight:700;font-size:.9rem;display:flex;align-items:center;justify-content:center}
.progress-track{height:10px;background:var(--primary-tint);border-radius:999px;overflow:hidden;margin:10px 0}
.progress-fill{height:100%;background:var(--primary);border-radius:999px;transition:width .25s ease;width:0}
.avatar-letter{width:40px;height:40px;border-radius:50%;background:var(--primary);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-weight:700}
/* 技能树节点（agent-skills-tree 专用） */
.tree-node{display:flex;align-items:center;gap:10px;background:var(--white);border:1.5px solid var(--card-line);border-radius:var(--radius-sm);padding:10px 14px;cursor:pointer;font-weight:600;font-size:.92rem;min-height:46px;transition:all .15s ease}
.tree-node:hover{border-color:var(--primary)}
.tree-node.done{border-color:var(--primary);background:var(--primary-tint);color:var(--primary-dark)}
.tree-node.next{border-color:var(--accent);background:#fdf3e6;color:#8a5a1c}
.tree-level{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:1rem 0 .5rem}
/* 分类锚点标题（tools.html 用） */
.anchor-target{scroll-margin-top:80px}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}