/* Shared styles for learnagentflow.com marketing pages (site-v2). Served at /ai/assets/site.css */
:root{--bg:#ffffff;--alt:#f6f7f9;--ink:#0a0a0a;--ink2:#374151;--muted:#6b7280;--line:#ececf0;--accent:#4f46e5;--accent2:#0891b2;--soft:#eef0ff;--radius:14px}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Inter","Segoe UI",sans-serif;background:var(--bg);color:var(--ink);line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
.wrap{max-width:1140px;margin:0 auto;padding:0 28px}
h1,h2,h3{letter-spacing:-.5px}
h2{font-size:32px;font-weight:600;line-height:1.22}
.eyebrow{font-size:11px;letter-spacing:.2em;text-transform:uppercase;font-weight:600;color:var(--accent);margin-bottom:14px}
.lead{color:var(--muted);max-width:640px;font-size:16px;margin-top:12px}
.center .lead{margin-left:auto;margin-right:auto}
.btn{display:inline-block;font-size:14px;font-weight:500;padding:13px 24px;border-radius:10px;cursor:pointer;transition:.18s;border:none;font-family:inherit}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(10,10,10,.18)}
.btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{border-color:#cfd3dc;background:#fafafa}
.link{color:var(--accent);font-weight:500;font-size:14px}
.auth-user{display:none;font-size:13px;color:var(--muted);max-width:180px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.auth-ready .auth-guest{display:none!important}
.auth-ready .auth-user,.auth-ready .auth-in{display:inline-block!important}
.auth-in{display:none!important}

/* header */
header{position:fixed;top:0;left:0;right:0;z-index:60;transition:.3s;border-bottom:1px solid transparent;background:rgba(255,255,255,.6);backdrop-filter:blur(10px)}
header.solid{background:rgba(255,255,255,.9);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.logo{font-weight:600;font-size:16px;letter-spacing:.3px;display:flex;align-items:center;gap:8px;flex:none}
.logo b{color:var(--accent);font-weight:600}
.logo .lk{display:inline-flex;flex-direction:column;line-height:1.12;vertical-align:middle}
.logo .lk i{font-style:normal;font-size:8.5px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;opacity:.62;margin-top:3px;white-space:nowrap}
.menu{display:flex;gap:22px;font-size:14px;color:var(--muted)}
.menu a:hover,.menu a.on{color:var(--ink)}
.navright{display:flex;align-items:center;gap:12px}
.nav .btn{padding:9px 18px}
.lang{font-size:13px;color:var(--muted);white-space:nowrap}
.lang b{color:var(--ink);font-weight:600}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:8px;width:38px;height:36px;font-size:18px;cursor:pointer;color:var(--ink)}

/* hero (home) */
#hero{min-height:86vh;display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:20px;padding:120px 0 60px}
#gem{width:100%;height:420px;display:block}
.glabel{font-size:15px;font-weight:600;color:var(--accent);margin-bottom:16px}
.glabel::before{content:"";display:inline-block;width:22px;height:2px;background:var(--accent);vertical-align:middle;margin-right:10px}
.ghead{font-size:46px;line-height:1.14;font-weight:600;color:var(--ink);max-width:560px}
.gline{height:2px;width:66px;background:var(--accent);margin:24px 0}
.gsub{font-size:16px;color:var(--muted);max-width:480px;margin-bottom:30px}
.hero-cta{display:flex;gap:16px;align-items:center;flex-wrap:wrap}

/* hero (course) */
.phero{padding:118px 0 56px;background:linear-gradient(180deg,#f7f7ff 0%,#fff 100%);border-bottom:1px solid var(--line)}
.crumbs{font-size:13px;color:var(--muted);margin-bottom:22px}
.crumbs a:hover{color:var(--ink)}
.crumbs span{margin:0 8px;color:#c4c8d0}
.lvl{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--accent);background:var(--soft);border:1px solid #d7dafd;border-radius:999px;padding:4px 12px;margin-bottom:16px}
.phero h1{font-size:40px;line-height:1.18;font-weight:600;max-width:760px}
.phero .lead{font-size:17px;max-width:720px}
.facts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:32px 0 28px;max-width:900px}
.fact{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.fact .k{font-size:12px;color:var(--muted);letter-spacing:.04em}
.fact .v{font-size:14.5px;font-weight:600;color:var(--ink);margin-top:2px;line-height:1.5}

/* sections */
.sec{padding:96px 0}
.sec.tight{padding:72px 0}
.sec.alt{background:var(--alt)}
.center{text-align:center}
.grid{display:grid;gap:18px;margin-top:44px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g5{grid-template-columns:repeat(5,minmax(0,1fr))}
.card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.2s;text-align:left}
a.card:hover,.card.hov:hover{transform:translateY(-4px);border-color:#d7d9e0;box-shadow:0 18px 44px rgba(10,10,20,.07)}
.card h3{font-size:18px;font-weight:600;margin-bottom:6px;line-height:1.4}
.card p,.card .desc{font-size:14px;color:var(--muted)}
.tag{display:inline-block;font-size:11.5px;font-weight:600;padding:4px 12px;border-radius:20px}
.tag.free{background:#e6faf2;color:#0a8f6b;border:1px solid #b9f0dc}
.tag.lock{background:var(--soft);color:var(--accent);border:1px solid #d7dafd}
.ticks{list-style:none;margin-top:16px;display:flex;flex-direction:column;gap:9px}
.ticks li{font-size:14px;color:var(--ink2);display:flex;gap:10px;align-items:flex-start}
.ticks li::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent2);margin-top:9px;flex:none}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{font-size:12.5px;color:var(--ink2);border:1px solid var(--line);background:#fff;border-radius:999px;padding:5px 12px}
a.chip:hover{border-color:var(--accent);color:var(--accent)}

/* level cards (home) */
.level{display:flex;flex-direction:column;position:relative;padding-top:22px}
.level .n{font-size:12px;font-weight:800;letter-spacing:.12em;color:var(--accent)}
.level h3{font-size:17px;margin:6px 0 8px}
.level .meta{font-size:12.5px;color:var(--ink2);margin-bottom:10px}
.level .go{margin-top:auto;padding-top:14px;font-size:13.5px;font-weight:600;color:var(--accent)}
.level .bar{position:absolute;left:0;top:0;height:4px;border-radius:14px 14px 0 0;background:var(--accent)}

/* programmes */
.prog .incl{font-size:13px;font-weight:600;color:var(--accent);margin:4px 0 10px}

/* content blocks (course pages) */
.block{max-width:900px}
.block h2{font-size:26px;margin-bottom:10px}
.block .lead{margin-top:4px}
.goal-list{list-style:none;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:24px}
.goal-list li{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px;font-size:14.5px;color:var(--ink2)}
.tbl{overflow-x:auto;margin-top:24px;border:1px solid var(--line);border-radius:12px;background:#fff;-webkit-overflow-scrolling:touch}
.tbl table{border-collapse:collapse;width:100%;min-width:680px;font-size:14px}
.tbl th{background:#f8f9fb;text-align:left;font-weight:600;color:var(--ink);padding:12px 14px;border-bottom:1px solid var(--line);white-space:nowrap}
.tbl td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top;color:var(--ink2);line-height:1.6}
.tbl tr:last-child td{border-bottom:none}
.tbl td:first-child{font-weight:600;color:var(--ink);white-space:nowrap}
.tbl tr.hl td{background:#fafaff}
.tbl .pill{display:inline-block;font-size:11.5px;font-weight:600;color:var(--accent);background:var(--soft);border-radius:999px;padding:1px 8px;margin-left:6px;white-space:nowrap}
.note{font-size:13px;color:var(--muted);margin-top:12px}
.outs{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin-top:22px}
.out{background:#fff;border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:10px;padding:14px 16px;font-size:14.5px;color:var(--ink2)}
.out b{display:block;color:var(--ink);font-weight:600;margin-bottom:2px}

/* faq */
.faq{max-width:820px;margin:36px auto 0;text-align:left}
.faq details{border-bottom:1px solid var(--line);padding:18px 4px}
.faq details:first-child{border-top:1px solid var(--line)}
.faq summary{cursor:pointer;font-weight:600;font-size:15.5px;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--accent);font-size:20px;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq p{margin-top:10px;font-size:14.5px;color:var(--muted)}

/* n8n module cards (L4) */
.lab .no{font-size:11px;letter-spacing:.14em;color:#9aa0a6;margin-top:16px}
.lab h3{font-size:19px;font-weight:600;margin:5px 0 4px}
.lab ul{list-style:none;margin-top:14px;display:flex;flex-direction:column;gap:9px}
.lab li{font-size:14px;color:var(--muted);display:flex;gap:10px;align-items:flex-start}
.lab li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);margin-top:9px;flex:none}
.unlock-card{cursor:pointer;position:relative;display:flex;flex-direction:column}
.unlock-card.unlocked{border-color:#d7d9ff}
.unlock-card:focus-visible{outline:3px solid rgba(79,70,229,.24);outline-offset:4px}
.core-cta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:18px;border:1px solid var(--line);background:#fff;border-radius:12px;padding:13px 14px;color:var(--ink2);font-size:13px;font-weight:600}
.unlock-card>.core-cta{margin-top:auto}
.unlock-card.open>.core-cta{margin-top:18px}
.core-cta .state{color:var(--accent);white-space:nowrap}
.core-cta .chev{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--soft);color:var(--accent);font-size:16px;transition:.18s;flex:none}
.unlock-card.open .core-cta .chev{transform:rotate(180deg)}
.module-route{display:none;margin-top:22px;border-top:1px solid var(--line);padding-top:20px}
.unlock-card.open .module-route{display:block}
.route-kicker{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);font-weight:700;margin-bottom:8px}
.route-title{font-size:18px;font-weight:700;color:var(--ink);margin-bottom:6px}
.route-desc{font-size:13px;color:var(--muted);line-height:1.7;margin-bottom:14px}
.module-list{display:flex;flex-direction:column;gap:10px}
.module-step{display:grid;grid-template-columns:74px 1fr;gap:14px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px}
.module-step .idx{font-size:11px;letter-spacing:.12em;color:var(--accent);font-weight:800;line-height:1.4}
.module-step h4{font-size:15px;font-weight:700;margin:0 0 5px;color:var(--ink)}
.module-step p{font-size:13px;color:var(--muted);line-height:1.6;margin:0}
.module-step .mini{display:flex;gap:6px;flex-wrap:wrap;margin-top:9px}
.module-step .mini span{font-size:11px;color:var(--ink2);border:1px solid var(--line);background:#f8fafc;border-radius:999px;padding:3px 8px}

/* forms */
.form{max-width:560px;margin:36px auto 0;text-align:left}
.form.compact{max-width:none;margin:22px 0 0}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form input,.form textarea,.form select{width:100%;background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:13px 15px;color:var(--ink);font-size:14px;font-family:inherit;margin-top:12px}
.form .row input{margin-top:0}
.form .row+.row,.form .row+input,.form .row+.phrow{margin-top:12px}
.form .phrow{display:flex;gap:10px;margin-top:12px}
.form .phrow select,.form .phrow input{margin-top:0}
.form .phrow input{flex:1}
.form .phrow select{flex:none;max-width:170px;padding:13px 10px;cursor:pointer}
.form input:focus,.form textarea:focus,.form select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(79,70,229,.12)}
.form button{width:100%;margin-top:14px}
.form .hint{font-size:12px;color:#98a2b3;margin-top:10px;line-height:1.6}
.ok{display:none;color:#0a8f6b;font-size:14px;margin-top:14px;text-align:center}
.contact{display:grid;grid-template-columns:1fr 1.1fr;gap:40px;align-items:start;text-align:left}
.contact .card{padding:28px}

/* footer */
footer{border-top:1px solid var(--line);padding:48px 0 36px;color:#9aa0a6;font-size:13px}
.footgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px;margin-bottom:28px}
.footgrid h4{font-size:13px;color:var(--ink2);font-weight:600;margin-bottom:10px}
.footgrid a{display:block;color:var(--muted);margin:5px 0}
.footgrid a:hover{color:var(--ink)}
.footrow{display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;align-items:center;border-top:1px solid var(--line);padding-top:22px}
footer b{color:var(--ink2);font-weight:600}

/* language hint */
.langhint{position:fixed;left:50%;bottom:18px;transform:translateX(-50%);z-index:70;display:flex;align-items:center;gap:14px;background:#111827;color:#fff;font-size:13.5px;padding:10px 12px 10px 18px;border-radius:12px;box-shadow:0 12px 30px rgba(0,0,0,.18);max-width:calc(100% - 32px)}
.langhint a{color:#c7d2fe;font-weight:600;white-space:nowrap}
.langhint button{background:none;border:none;color:#9ca3af;font-size:18px;cursor:pointer;line-height:1;padding:0 4px}
@media(max-width:480px){.langhint{font-size:12.5px;gap:10px;bottom:12px}.langhint span{display:none}}

/* reveal */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

@media(max-width:1000px){
  .g5{grid-template-columns:repeat(2,minmax(0,1fr))}
  .g3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:860px){
  .wrap{padding:0 16px}
  .menu{display:none;position:absolute;top:68px;left:0;right:0;flex-direction:column;gap:0;background:#fff;border-bottom:1px solid var(--line);padding:6px 16px 12px}
  .menu.open{display:flex}
  .menu a{padding:10px 0;border-bottom:1px solid var(--line);color:var(--ink2)}
  .menu a:last-child{border-bottom:none}
  .burger{display:block}
  .navright .auth-user,.navright .link{display:none!important}
  .logo .lk i{font-size:7.5px;letter-spacing:.08em}
  #hero{grid-template-columns:1fr;min-height:auto;padding:104px 0 32px;text-align:center}
  #gem{height:260px;order:-1}
  .ghead{font-size:32px;margin:0 auto}.gsub{margin:0 auto 26px}.gline{margin:22px auto}
  .hero-cta{justify-content:center}
  h2{font-size:25px}.sec{padding:64px 0}.sec.tight{padding:52px 0}
  .phero{padding:100px 0 40px}.phero h1{font-size:29px}
  .facts{grid-template-columns:repeat(2,minmax(0,1fr))}
  .g2,.g3,.g5,.goal-list,.contact,.footgrid{grid-template-columns:1fr}
  .module-step{grid-template-columns:1fr;gap:8px}
  .form .row{grid-template-columns:1fr}
  .form .phrow{flex-direction:column}
  .form .phrow select{max-width:none;width:100%}
}
.m-only{display:none}
@media(max-width:860px){.menu .m-only{display:block}}
@media(max-width:480px){.navright .btn{display:none!important}.logo{font-size:15px}}
@media(min-width:861px){.menu .m-only{display:none!important}}