/* AIGC应用工程师专题次官网 · new.wslt.cn/aigc/
   视觉语言对齐 ai.arkvip.cn：专业蓝、卡片模块、数据表格、克制表达
   资源相对路径，适配子目录部署 */

:root{
  --primary:#0b5ed7;
  --primary-dark:#0a4bb0;
  --ink:#1c2430;
  --muted:#5b6774;
  --line:#e3e8ee;
  --bg:#ffffff;
  --bg-soft:#f4f7fb;
  --ok:#1a7f4b;
  --radius:14px;
  --shadow:0 8px 28px rgba(16,42,88,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Segoe UI",system-ui,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.75;font-size:16px;
}
img,svg{max-width:100%}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1080px;margin:0 auto;padding:0 20px}
.skip-link{position:absolute;left:-999px}
.skip-link:focus{left:8px;top:8px;background:#fff;padding:6px 12px;z-index:99;border:1px solid var(--line)}

/* ===== Header ===== */
.site-header{position:sticky;top:0;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);z-index:50}
.nav-wrap{display:flex;align-items:center;gap:18px;padding:12px 20px;max-width:1080px;margin:0 auto;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand-mark{width:38px;height:38px;flex:0 0 38px;background:var(--primary);border-radius:10px;display:flex;align-items:center;justify-content:center}
.brand-mark svg{width:22px;height:22px;fill:#fff;stroke:#fff}
.brand-mark .mark-line{fill:none;stroke-width:2}
.brand strong{display:block;font-size:16.5px;line-height:1.3}
.brand small{display:block;color:var(--muted);font-size:12px}
.main-nav{margin-left:auto;display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.main-nav a{padding:7px 11px;border-radius:8px;color:var(--ink);font-size:14.5px}
.main-nav a:hover{background:var(--bg-soft);text-decoration:none}
.main-nav a.active{color:var(--primary);font-weight:600}
.btn{display:inline-block;background:var(--primary);color:#fff !important;border-radius:10px;padding:9px 18px;font-weight:600;transition:background .2s}
.btn:hover{background:var(--primary-dark);text-decoration:none}
.btn-ghost{background:transparent;color:var(--primary) !important;border:1.5px solid var(--primary)}
.btn-ghost:hover{background:var(--bg-soft)}
.btn-lg{padding:12px 24px;font-size:16px}
.btn-sm{padding:6px 14px;font-size:13.5px}

/* ===== Hero ===== */
.hero{background:linear-gradient(160deg,#f7faff 0%,#eef4fd 60%,#e7effc 100%);padding:64px 0 56px;border-bottom:1px solid var(--line)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-size:13.5px;font-weight:600;background:#fff;border:1px solid var(--line);border-radius:99px;padding:5px 14px;margin-bottom:18px}
.eyebrow span{width:8px;height:8px;border-radius:50%;background:var(--primary)}
.hero h1{font-size:34px;line-height:1.35;letter-spacing:.5px}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero-lead{margin:18px 0 24px;color:var(--muted);font-size:16.5px;max-width:640px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-note{display:flex;gap:8px;align-items:flex-start;margin-top:22px;color:var(--muted);font-size:13.2px;max-width:660px}
.hero-note svg{width:16px;height:16px;flex:0 0 16px;fill:none;stroke:var(--muted);stroke-width:2;margin-top:3px}
.fact-chips{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.fact-chip{background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 16px;box-shadow:var(--shadow)}
.fact-chip small{display:block;color:var(--muted);font-size:12px}
.fact-chip b{font-size:14.5px}

/* ===== Sections ===== */
.section-pad{padding:56px 0}
.bg-soft{background:var(--bg-soft)}
.section-head{margin-bottom:30px}
.section-head.center{text-align:center;max-width:760px;margin-left:auto;margin-right:auto}
.section-kicker{color:var(--primary);font-weight:700;font-size:13.5px;letter-spacing:2px;margin-bottom:8px}
.section-head h2{font-size:26px;line-height:1.4}
.section-head p{color:var(--muted);margin-top:10px;font-size:15.2px}
.section-action{margin-top:26px}

/* cards */
.module-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px}
.module-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.module-card h4{font-size:17px;margin-bottom:8px;color:var(--primary-dark)}
.module-card p{color:var(--muted);font-size:14.6px;margin-bottom:10px}
.module-card ul{list-style:none}
.module-card li{color:var(--muted);font-size:14px;padding:4px 0 4px 18px;position:relative}
.module-card li::before{content:"·";position:absolute;left:4px;color:var(--primary);font-weight:700}

/* fact board (证书身份卡) */
.fact-board{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px}
.fact-item{background:#fff;border:1px solid var(--line);border-left:4px solid var(--primary);border-radius:10px;padding:14px 16px}
.fact-item small{display:block;color:var(--muted);font-size:12.5px;margin-bottom:2px}
.fact-item b{font-size:15px}
.fact-item span{display:block;color:var(--muted);font-size:13px;margin-top:4px}

/* table */
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
table.data-table{width:100%;border-collapse:collapse;font-size:14.5px;min-width:560px}
.data-table caption{padding:14px 16px 4px;text-align:left;font-weight:700;color:var(--ink)}
.data-table th{background:var(--primary);color:#fff;text-align:left;padding:11px 14px;font-weight:600;white-space:nowrap}
.data-table td{padding:11px 14px;border-top:1px solid var(--line);color:var(--ink);vertical-align:top}
.data-table tr:nth-child(even) td{background:#f8fafd}
.table-note{color:var(--muted);font-size:13.2px;margin-top:10px}

/* steps */
.step-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:14px}
.step-card{display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px}
.step-card b.no{flex:0 0 32px;width:32px;height:32px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px}
.step-card strong{display:block;font-size:15px}
.step-card span{color:var(--muted);font-size:13.8px}

/* article cards */
.article-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px}
.article-card{display:flex;flex-direction:column;gap:6px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow);color:var(--ink);transition:transform .15s,border-color .15s}
.article-card:hover{transform:translateY(-2px);border-color:var(--primary);text-decoration:none}
.article-card .tag{align-self:flex-start;font-size:12px;color:var(--primary);background:#edf3fe;border-radius:6px;padding:2px 8px;font-weight:600}
.article-card strong{font-size:15.5px;line-height:1.5}
.article-card span{color:var(--muted);font-size:13.5px}

/* faq */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 22px;margin-bottom:12px}
.faq-item h3{font-size:15.8px;margin-bottom:8px}
.faq-item p{color:var(--muted);font-size:14.5px}

/* consult / cta strip */
.cta-strip{background:linear-gradient(135deg,#0b5ed7,#0a4bb0);border-radius:var(--radius);color:#fff;padding:30px 32px;display:flex;gap:20px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.cta-strip h3{font-size:20px}
.cta-strip p{opacity:.92;font-size:14px;margin-top:4px}
.cta-strip .btn{background:#fff;color:var(--primary-dark) !important}

/* footer */
.site-footer{background:#101b2c;color:#c6d2e2;padding:34px 0;margin-top:40px;font-size:13.5px}
.site-footer a{color:#9ec2f5}
.foot-grid{display:flex;gap:30px;flex-wrap:wrap;justify-content:space-between}
.foot-note{margin-top:16px;color:#8b9cb3;font-size:12.5px;line-height:1.8}

/* ===== article page ===== */
.article-wrap{max-width:820px;margin:0 auto;padding:40px 20px 20px}
.article-body{overflow-x:auto}
.article-meta{color:var(--muted);font-size:13.5px;margin-bottom:22px;display:flex;gap:14px;flex-wrap:wrap}
.article-body h1{font-size:27px;line-height:1.45;margin-bottom:16px}
.article-body h2{font-size:21px;margin:34px 0 14px;padding-left:12px;border-left:4px solid var(--primary)}
.article-body h3{font-size:17.5px;margin:24px 0 10px}
.article-body p{margin:12px 0;color:var(--ink);font-size:15.8px}
.article-body ul,.article-body ol{margin:12px 0 12px 24px;color:var(--ink)}
.article-body li{margin:6px 0}
.article-body table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14.5px}
.article-body th{background:var(--primary);color:#fff;padding:9px 12px;text-align:left;white-space:nowrap}
.article-body td{padding:9px 12px;border:1px solid var(--line)}
.article-body tr:nth-child(even) td{background:#f8fafd}
.article-body strong{color:var(--primary-dark)}
.src-note{background:var(--bg-soft);border:1px dashed var(--line);border-radius:10px;padding:12px 16px;color:var(--muted);font-size:13.2px;margin-top:30px}
.breadcrumb{font-size:13.5px;color:var(--muted);margin-bottom:14px}
.next-prev{display:flex;justify-content:space-between;gap:12px;margin-top:34px;flex-wrap:wrap}
.next-prev a{font-size:14px}

@media (max-width:720px){
  .hero{padding:44px 0}
  .hero h1{font-size:26px}
  .brand strong{font-size:15px}
  .main-nav{width:100%}
  .section-pad{padding:40px 0}
}

/* ===== 页脚咨询区 ===== */
.foot-contact{display:flex;gap:14px;flex-wrap:wrap;align-items:center;margin:6px 0 14px;padding:14px 16px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:12px}
.foot-contact .fc-label{font-size:13.5px;color:#c6d2e2;margin-right:2px}
.foot-contact a.fc-btn{display:inline-flex;align-items:center;gap:8px;background:#fff;color:#1c2430;border-radius:9px;padding:8px 16px;font-size:14px;font-weight:600;transition:opacity .15s}
.foot-contact a.fc-btn:hover{opacity:.88;text-decoration:none}
.foot-contact a.fc-btn.ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.4)}
.foot-contact a.fc-btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ===== 客服悬浮窗 ===== */
.float-contact{position:fixed;right:18px;bottom:18px;z-index:120;display:flex;flex-direction:column;align-items:flex-end;gap:10px;font-size:14px}
.fc-toggle{width:52px;height:52px;border-radius:50%;background:var(--primary);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 20px rgba(11,94,215,.4);transition:transform .15s,background .15s}
.fc-toggle:hover{background:var(--primary-dark);transform:translateY(-2px)}
.fc-toggle svg{width:24px;height:24px;fill:none;stroke:#fff;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.fc-panel{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 10px 34px rgba(16,42,88,.18);padding:14px;width:216px}
.float-contact.open .fc-panel{display:block}
.fc-panel .fc-title{font-size:13px;color:var(--muted);margin-bottom:10px;text-align:center}
.fc-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;color:var(--ink);margin-bottom:8px;border:1px solid var(--line)}
.fc-item:hover{background:var(--bg-soft);text-decoration:none;border-color:var(--primary)}
.fc-item svg{width:18px;height:18px;flex:0 0 18px;fill:none;stroke:var(--primary);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.fc-item b{font-size:14px}
.fc-item small{display:block;color:var(--muted);font-size:12px;font-weight:400}
.fc-close{width:100%;background:none;border:none;color:var(--muted);font-size:12.5px;cursor:pointer;padding:4px 0}
.fc-close:hover{color:var(--ink)}
@media (max-width:720px){.float-contact{right:12px;bottom:12px}}