/* =========================================================
   KU AI Academy · Design System
   한국U러닝연합회 × PulleyCampus
   ========================================================= */

:root{
  /* Brand */
  --brand-50:#eff5ff;
  --brand-100:#dbe8ff;
  --brand-200:#bdd5ff;
  --brand-300:#8fb8ff;
  --brand-400:#5f95fb;
  --brand-500:#3b7ff6;
  --brand-600:#2563eb;
  --brand-700:#1d4ed8;
  --brand-800:#1e40af;

  /* AI accent (purple / indigo) */
  --ai-50:#f4f1ff;
  --ai-100:#e9e2ff;
  --ai-300:#c0acff;
  --ai-500:#7c5cfa;
  --ai-600:#6d3fef;
  --ai-700:#5b2fd6;

  /* Gold (자격증) */
  --gold-50:#fdf7e7;
  --gold-300:#efd48a;
  --gold-500:#c9992c;
  --gold-600:#a87d1a;

  /* Neutral */
  --bg:#f5f7fb;
  --surface:#ffffff;
  --surface-2:#fafbfe;
  --border:#e6eaf2;
  --border-strong:#d7dded;
  --text:#0f172a;
  --text-2:#475569;
  --muted:#7b8698;
  --muted-2:#98a3b5;

  /* Semantic */
  --ok:#0f9d6e;
  --ok-bg:#e6f7f1;
  --warn:#c2790a;
  --warn-bg:#fdf3e2;
  --danger:#dc2f4b;
  --danger-bg:#fdecef;
  --info-bg:#eaf1ff;

  --r-sm:10px;
  --r:14px;
  --r-lg:18px;
  --r-xl:24px;

  --sh-1:0 1px 2px rgba(15,23,42,.05), 0 1px 3px rgba(15,23,42,.04);
  --sh-2:0 4px 14px rgba(15,23,42,.06), 0 1px 3px rgba(15,23,42,.04);
  --sh-3:0 14px 40px rgba(15,23,42,.10), 0 2px 8px rgba(15,23,42,.05);
  --sh-brand:0 10px 26px rgba(37,99,235,.22);

  --nav-h:66px;
  --bar-h:36px;

  --ease:cubic-bezier(.2,.7,.3,1);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg);
  color:var(--text);
  font-family:"Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,"Malgun Gothic","맑은 고딕",system-ui,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:15px;
  line-height:1.62;
  -webkit-font-smoothing:antialiased;
  letter-spacing:-.01em;
}
img{max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit;letter-spacing:inherit}
h1,h2,h3,h4{margin:0;line-height:1.28;letter-spacing:-.028em;font-weight:800}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px}

/* ===== Layout helpers ===== */
.wrap{max-width:1280px;margin:0 auto;padding:0 28px}
.wrap-wide{max-width:1440px;margin:0 auto;padding:0 28px}
.row{display:flex;align-items:center}
.between{display:flex;align-items:center;justify-content:space-between;gap:16px}
.gap8{gap:8px}.gap12{gap:12px}.gap16{gap:16px}.gap24{gap:24px}
.wrapflex{flex-wrap:wrap}
.grow{flex:1}
.center{text-align:center}
.mt8{margin-top:8px}.mt12{margin-top:12px}.mt16{margin-top:16px}.mt24{margin-top:24px}.mt32{margin-top:32px}.mt40{margin-top:40px}
.mb8{margin-top:0;margin-bottom:8px}.mb16{margin-bottom:16px}.mb24{margin-bottom:24px}
.section{padding:76px 0}
.section-sm{padding:48px 0}
.muted{color:var(--muted)}
.small{font-size:13px}
.tiny{font-size:12px}
.b700{font-weight:700}
.mono{font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace}

.sec-head{margin-bottom:28px}
.sec-eyebrow{color:var(--brand-600);font-weight:800;font-size:13px;letter-spacing:.02em;margin-bottom:8px}
.sec-title{font-size:30px}
.sec-desc{color:var(--text-2);margin-top:10px;font-size:15.5px}

/* ===== Demo bar ===== */
#demo-bar{
  height:var(--bar-h);display:flex;align-items:center;justify-content:center;gap:8px;
  background:linear-gradient(90deg,#101a33,#1b2b52 45%,#3a2a63);
  color:#cfe0ff;font-size:12.5px;position:fixed;top:0;left:0;right:0;z-index:120;padding:0 16px;
}
#demo-bar b{color:#fff;letter-spacing:.06em}
#demo-bar .dot{width:7px;height:7px;border-radius:50%;background:#4ade80;box-shadow:0 0 0 3px rgba(74,222,128,.2)}
.dbar-short{display:none}
.demo-reset{margin-left:10px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:#e6efff;
  border-radius:999px;padding:3px 11px;font-size:11.5px;cursor:pointer;transition:.18s var(--ease)}
.demo-reset:hover{background:rgba(255,255,255,.22)}

/* ===== Top navigation ===== */
#topnav{
  position:fixed;top:var(--bar-h);left:0;right:0;height:var(--nav-h);z-index:110;
  background:rgba(255,255,255,.88);backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--border);
}
.nav-inner{max-width:1440px;margin:0 auto;padding:0 28px;height:var(--nav-h);display:flex;align-items:center;gap:26px}
.brand{display:flex;align-items:center;gap:11px;cursor:pointer;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand-600),var(--ai-600));
  display:grid;place-items:center;color:#fff;font-weight:900;font-size:14px;letter-spacing:-.04em;
  box-shadow:var(--sh-brand);
}
.brand-logo{height:44px;width:auto;display:block}
.ft-logo{display:inline-block;background:#fff;border-radius:12px;padding:8px 14px}
.ft-logo img{height:36px;width:auto;display:block}
.brand-txt strong{display:block;font-size:15.5px;font-weight:800;letter-spacing:-.03em;line-height:1.2}
.brand-txt span{display:block;font-size:11px;color:var(--muted);letter-spacing:.01em}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:8px}
.nav-menu a{
  padding:9px 14px;border-radius:10px;font-size:14.5px;font-weight:600;color:var(--text-2);
  cursor:pointer;transition:.16s var(--ease);white-space:nowrap;
}
.nav-menu a:hover{background:var(--brand-50);color:var(--brand-700)}
.nav-menu a.on{color:var(--brand-700);background:var(--brand-50)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-role{
  display:flex;align-items:center;gap:8px;padding:6px 8px 6px 6px;border:1px solid var(--border);
  border-radius:999px;background:#fff;cursor:pointer;transition:.18s var(--ease)
}
.nav-role:hover{border-color:var(--brand-300);box-shadow:var(--sh-1)}
.nav-avatar{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;color:#fff;font-size:12px;font-weight:800;
  background:linear-gradient(135deg,var(--brand-500),var(--ai-500))}
.nav-role .rname{font-size:13px;font-weight:700}
.nav-role .rtag{font-size:11px;color:var(--muted)}
.nav-burger{display:none}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  height:42px;padding:0 18px;border-radius:11px;border:1px solid transparent;
  font-size:14.5px;font-weight:700;cursor:pointer;transition:.18s var(--ease);white-space:nowrap;
  background:var(--brand-600);color:#fff;box-shadow:var(--sh-brand);
}
.btn:hover{transform:translateY(-1px);background:var(--brand-700)}
.btn:active{transform:translateY(0)}
.btn.ghost{background:#fff;color:var(--text);border-color:var(--border-strong);box-shadow:var(--sh-1)}
.btn.ghost:hover{background:var(--brand-50);border-color:var(--brand-300);color:var(--brand-700)}
.btn.soft{background:var(--brand-50);color:var(--brand-700);box-shadow:none}
.btn.soft:hover{background:var(--brand-100)}
.btn.ai{background:linear-gradient(135deg,var(--ai-600),var(--brand-600));box-shadow:0 10px 26px rgba(109,63,239,.26)}
.btn.ai:hover{filter:brightness(1.06)}
.btn.gold{background:linear-gradient(135deg,#caa03a,#a87d1a);box-shadow:0 10px 26px rgba(168,125,26,.25)}
.btn.dark{background:#0f172a;box-shadow:0 10px 26px rgba(15,23,42,.22)}
.btn.dark:hover{background:#1e293b}
.btn.lg{height:50px;padding:0 24px;font-size:15.5px;border-radius:13px}
.btn.sm{height:34px;padding:0 12px;font-size:13px;border-radius:9px;box-shadow:none}
.btn.xs{height:28px;padding:0 10px;font-size:12px;border-radius:8px;box-shadow:none}
.btn.block{width:100%}
.btn.plain{background:transparent;color:var(--text-2);box-shadow:none}
.btn.plain:hover{background:#eef1f7;color:var(--text)}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none!important}

/* ===== Chips / badges ===== */
.chip{display:inline-flex;align-items:center;gap:5px;height:26px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:700;background:#eef2f8;color:var(--text-2)}
.chip.b{background:var(--brand-50);color:var(--brand-700)}
.chip.ai{background:var(--ai-50);color:var(--ai-700)}
.chip.gold{background:var(--gold-50);color:var(--gold-600)}
.chip.ok{background:var(--ok-bg);color:var(--ok)}
.chip.warn{background:var(--warn-bg);color:var(--warn)}
.chip.dg{background:var(--danger-bg);color:var(--danger)}
.chip.line{background:#fff;border:1px solid var(--border-strong);color:var(--text-2)}
.chip.on{background:var(--brand-600);color:#fff}

.mode-tag{display:inline-flex;align-items:center;gap:5px;height:24px;padding:0 9px;border-radius:7px;font-size:11.5px;font-weight:800}
.mode-online{background:#e8f1ff;color:#1d4ed8}
.mode-offline{background:#e9f7f1;color:#0b7a58}
.mode-blended{background:linear-gradient(135deg,#efe7ff,#e5edff);color:#5b2fd6}

/* ===== Cards ===== */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--sh-1)}
.card.pad{padding:22px}
.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 20px;border-bottom:1px solid var(--border)}
.panel-head h3{font-size:15.5px;font-weight:800}
.panel-head .sub{font-size:12.5px;color:var(--muted);font-weight:500;margin-top:2px}
.panel-body{padding:20px}
.panel-body.tight{padding:0}

/* ===== HOME hero ===== */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:
    radial-gradient(1000px 500px at 78% -10%,rgba(124,92,250,.55),transparent 60%),
    radial-gradient(800px 460px at 8% 110%,rgba(59,127,246,.5),transparent 62%),
    linear-gradient(140deg,#0c1630 0%,#132248 45%,#241a4d 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;mask-image:radial-gradient(800px 460px at 30% 40%,#000,transparent 75%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;padding:84px 0 76px}
.hero-kicker{display:inline-flex;align-items:center;gap:9px;padding:7px 14px;border-radius:999px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);font-size:13px;font-weight:700;color:#dfe9ff}
.hero-kicker .x{opacity:.6}
.hero h1{font-size:52px;line-height:1.16;margin-top:22px;letter-spacing:-.04em}
.hero h1 .grad{background:linear-gradient(100deg,#8fd0ff,#b39bff 55%,#ffd08a);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin-top:20px;font-size:17.5px;color:#c6d4ef;line-height:1.72}
.hero-cta{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
.btn.hero-main{background:#fff;color:#132248;box-shadow:0 14px 34px rgba(0,0,0,.28)}
.btn.hero-main:hover{background:#eef3ff}
.btn.hero-alt{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.26);color:#fff;box-shadow:none}
.btn.hero-alt:hover{background:rgba(255,255,255,.18)}
.hero-note{margin-top:20px;font-size:13px;color:#93a7cc}

/* hero panel mock */
.hero-mock{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:var(--r-xl);
  padding:16px;backdrop-filter:blur(10px);box-shadow:0 30px 70px rgba(0,0,0,.34)}
.hm-bar{display:flex;align-items:center;gap:6px;padding:4px 6px 12px}
.hm-bar i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.25)}
.hm-bar span{margin-left:8px;font-size:11.5px;color:#a9bbdd}
.hm-body{background:#fff;border-radius:16px;padding:16px;color:var(--text)}
.hm-title{font-size:13.5px;font-weight:800}
.hm-steps{display:flex;flex-direction:column;gap:8px;margin-top:12px}
.hm-step{display:flex;align-items:center;gap:10px;padding:10px 12px;border:1px solid var(--border);border-radius:12px;font-size:13px;font-weight:600}
.hm-step.done{background:var(--ok-bg);border-color:#c9ecdf;color:#0b6f51}
.hm-step.now{background:var(--ai-50);border-color:#ddd2ff;color:var(--ai-700);box-shadow:0 4px 14px rgba(109,63,239,.12)}
.hm-step .n{width:22px;height:22px;border-radius:7px;background:#eef2f8;display:grid;place-items:center;font-size:11px;font-weight:800;color:var(--muted)}
.hm-step.done .n{background:#0f9d6e;color:#fff}
.hm-step.now .n{background:var(--ai-600);color:#fff}
.hm-chat{margin-top:12px;border:1px dashed var(--ai-300);background:var(--ai-50);border-radius:12px;padding:11px 12px}
.hm-chat .q{font-size:12.5px;font-weight:700;color:var(--ai-700)}
.hm-chat .a{font-size:12px;color:var(--text-2);margin-top:5px;line-height:1.6}

/* KPI strip */
.kpi-strip{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.13);
  border-top:1px solid rgba(255,255,255,.13)}
.kpi-strip .k{background:rgba(10,18,38,.35);padding:26px 24px;text-align:center;color:#fff}
.kpi-strip .k .v{font-size:32px;font-weight:900;letter-spacing:-.04em;
  background:linear-gradient(100deg,#fff,#bcd4ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.kpi-strip .k .l{font-size:13px;color:#a8bbdd;margin-top:4px}

/* ===== feature cards ===== */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.feature{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);padding:26px;transition:.2s var(--ease);box-shadow:var(--sh-1)}
.feature:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:var(--brand-200)}
.f-ico{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;margin-bottom:16px;
  background:var(--brand-50);color:var(--brand-600)}
.f-ico.ai{background:var(--ai-50);color:var(--ai-600)}
.f-ico.gold{background:var(--gold-50);color:var(--gold-600)}
.f-ico.ok{background:var(--ok-bg);color:var(--ok)}
.feature h4{font-size:17px;margin-bottom:9px}
.feature p{color:var(--text-2);font-size:14.2px;line-height:1.68}
.f-list{margin-top:14px;display:flex;flex-wrap:wrap;gap:6px}

/* ===== Course card ===== */
.course-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.ccard{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);overflow:hidden;cursor:pointer;
  transition:.22s var(--ease);display:flex;flex-direction:column;box-shadow:var(--sh-1)}
.ccard:hover{transform:translateY(-5px) scale(1.012);box-shadow:var(--sh-3);border-color:var(--brand-200)}
.cc-thumb{height:132px;position:relative;display:flex;align-items:flex-end;padding:12px;overflow:hidden}
.cc-thumb::after{content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle at 82% 18%,rgba(255,255,255,.28),transparent 46%),
  linear-gradient(120deg,transparent 40%,rgba(255,255,255,.14) 41%,transparent 62%)}
.cc-thumb .glyph{position:absolute;right:12px;top:8px;font-size:44px;opacity:.9;filter:drop-shadow(0 6px 14px rgba(0,0,0,.2))}
.cc-thumb .tags{position:relative;z-index:2;display:flex;gap:6px;flex-wrap:wrap}
.cc-thumb .t{background:rgba(255,255,255,.94);color:#1e293b;border-radius:7px;padding:3px 8px;font-size:11px;font-weight:800}
.cc-body{padding:16px 16px 14px;display:flex;flex-direction:column;flex:1}
.cc-target{font-size:11.5px;font-weight:800;color:var(--brand-600)}
.cc-title{font-size:15.5px;font-weight:800;margin-top:6px;line-height:1.42;min-height:44px}
.cc-inst{font-size:12.8px;color:var(--muted);margin-top:7px}
.cc-meta{display:flex;gap:10px;font-size:12.3px;color:var(--text-2);margin-top:10px;flex-wrap:wrap}
.cc-certs{display:flex;gap:5px;margin-top:11px;flex-wrap:wrap}
.cc-foot{display:flex;align-items:flex-end;justify-content:space-between;margin-top:auto;padding-top:13px;border-top:1px solid var(--border)}
.cc-price{font-size:17px;font-weight:900;letter-spacing:-.03em}
.cc-price small{font-size:11.5px;color:var(--muted);font-weight:600;display:block;margin-bottom:-2px}
.cc-rate{font-size:12.5px;color:var(--text-2);font-weight:700}
.cc-rate .star{color:#f5a623}

/* ===== Partnership diagram ===== */
.partner{background:linear-gradient(160deg,#0d1730,#182a54 55%,#2a1e57);border-radius:var(--r-xl);padding:46px;color:#fff;position:relative;overflow:hidden}
.partner::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:44px 44px;mask-image:radial-gradient(700px 340px at 50% 0%,#000,transparent 70%)}
.pt-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr 78px 1fr;gap:16px;align-items:stretch}
.pt-box{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:var(--r-lg);padding:24px}
.pt-box h4{font-size:18px;margin-bottom:4px}
.pt-box .role{font-size:12.5px;color:#a9bddf}
.pt-box ul{margin-top:16px;display:flex;flex-direction:column;gap:9px}
.pt-box li{display:flex;gap:9px;font-size:13.8px;color:#d9e4f8;align-items:flex-start}
.pt-box li .b{color:#7fd6ff;flex-shrink:0;font-weight:900}
.pt-x{display:grid;place-items:center;position:relative;z-index:2}
.pt-x span{width:56px;height:56px;border-radius:50%;display:grid;place-items:center;font-size:22px;font-weight:900;
  background:linear-gradient(135deg,#3b7ff6,#7c5cfa);box-shadow:0 12px 30px rgba(124,92,250,.4)}
.pt-arrow{position:relative;z-index:2;text-align:center;margin:24px 0 18px;color:#8fa6cf;font-size:22px}
.pt-result{position:relative;z-index:2;background:linear-gradient(120deg,rgba(255,255,255,.14),rgba(255,255,255,.07));
  border:1px solid rgba(255,255,255,.2);border-radius:var(--r-lg);padding:24px;text-align:center}
.pt-result h4{font-size:20px}
.pt-result p{color:#b9cae9;font-size:13.8px;margin-top:6px}
.pt-users{display:flex;gap:10px;justify-content:center;margin-top:18px;flex-wrap:wrap}
.pt-user{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);border-radius:12px;padding:12px 22px;text-align:center;min-width:120px}
.pt-user b{display:block;font-size:15px}
.pt-user span{font-size:11.5px;color:#a9bddf}

/* ===== Journey steps ===== */
.journey{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.jstep{background:#fff;border:1px solid var(--border);border-radius:var(--r);padding:20px;position:relative;transition:.2s var(--ease);box-shadow:var(--sh-1)}
.jstep:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--brand-200)}
.jstep .num{font-size:11.5px;font-weight:900;color:var(--brand-600);letter-spacing:.06em}
.jstep h5{font-size:15.5px;font-weight:800;margin:8px 0 6px}
.jstep p{font-size:13.2px;color:var(--text-2);line-height:1.6}

/* ===== Page header ===== */
.page-head{background:linear-gradient(180deg,#fff,var(--surface-2));border-bottom:1px solid var(--border);padding:38px 0 30px}
.page-head h1{font-size:31px}
.page-head p{color:var(--text-2);margin-top:10px;font-size:15px}
.crumb{font-size:12.5px;color:var(--muted);margin-bottom:12px}
.crumb a{cursor:pointer}
.crumb a:hover{color:var(--brand-600)}

/* ===== Filter bar ===== */
.filters{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.search-box{position:relative;flex:1;min-width:240px}
.search-box input{
  width:100%;height:46px;border-radius:12px;border:1px solid var(--border-strong);padding:0 16px 0 42px;font-size:14.5px;
  background:#fff;transition:.18s var(--ease);color:var(--text)
}
.search-box input:focus{outline:none;border-color:var(--brand-400);box-shadow:0 0 0 4px var(--brand-50)}
.search-box .ico{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--muted-2)}
.fchips{display:flex;gap:7px;flex-wrap:wrap}
.fchip{height:36px;padding:0 14px;border-radius:999px;border:1px solid var(--border-strong);background:#fff;
  font-size:13.2px;font-weight:700;color:var(--text-2);cursor:pointer;transition:.16s var(--ease)}
.fchip:hover{border-color:var(--brand-300);color:var(--brand-700)}
.fchip.on{background:var(--brand-600);border-color:var(--brand-600);color:#fff;box-shadow:var(--sh-brand)}
select.sel{height:36px;border-radius:10px;border:1px solid var(--border-strong);background:#fff;padding:0 10px;font-size:13.2px;font-weight:600;color:var(--text-2);cursor:pointer}

/* ===== Course detail ===== */
.cd-hero{background:linear-gradient(150deg,#0d1730,#1a2c56 55%,#2b1f5a);color:#fff;padding:44px 0 40px;position:relative;overflow:hidden}
.cd-hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:48px 48px;mask-image:radial-gradient(700px 340px at 20% 30%,#000,transparent 72%)}
.cd-hero .wrap{position:relative;z-index:2}
.cd-hero h1{font-size:36px;margin:14px 0 14px;max-width:760px}
.cd-hero .lead{color:#c3d3ef;font-size:15.6px;max-width:720px;line-height:1.72}
.cd-facts{display:flex;gap:28px;margin-top:24px;flex-wrap:wrap}
.cd-fact .l{font-size:12px;color:#93a7cc}
.cd-fact .v{font-size:16px;font-weight:800;margin-top:2px}
.cd-layout{display:grid;grid-template-columns:1fr 356px;gap:34px;align-items:start;padding:36px 0 70px}
.cd-tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);margin-bottom:22px;overflow-x:auto}
.cd-tab{padding:12px 16px;font-size:14.5px;font-weight:700;color:var(--muted);cursor:pointer;border-bottom:2.5px solid transparent;white-space:nowrap;transition:.16s var(--ease)}
.cd-tab:hover{color:var(--text)}
.cd-tab.on{color:var(--brand-700);border-color:var(--brand-600)}

.buy-card{position:sticky;top:calc(var(--nav-h) + var(--bar-h) + 18px);background:#fff;border:1px solid var(--border);
  border-radius:var(--r-lg);box-shadow:var(--sh-3);overflow:hidden}
.buy-top{padding:20px;border-bottom:1px solid var(--border)}
.buy-price{font-size:28px;font-weight:900;letter-spacing:-.04em}
.buy-price small{font-size:13px;color:var(--muted);font-weight:600}
.buy-meta{padding:16px 20px;display:flex;flex-direction:column;gap:10px;font-size:13.5px}
.buy-meta .r{display:flex;justify-content:space-between;gap:10px}
.buy-meta .r span:first-child{color:var(--muted)}
.buy-meta .r span:last-child{font-weight:700}
.buy-actions{padding:0 20px 20px;display:flex;flex-direction:column;gap:9px}

/* curriculum list */
.cur-week{margin-bottom:14px;border:1px solid var(--border);border-radius:var(--r);overflow:hidden;background:#fff}
.cur-week-h{padding:13px 16px;background:var(--surface-2);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.cur-week-h b{font-size:14.2px}
.cur-item{display:flex;align-items:center;gap:12px;padding:13px 16px;border-bottom:1px solid var(--border)}
.cur-item:last-child{border-bottom:none}
.cur-ico{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;flex-shrink:0;background:var(--brand-50);color:var(--brand-600)}
.cur-ico.ailab{background:var(--ai-50);color:var(--ai-600)}
.cur-ico.offline{background:var(--ok-bg);color:var(--ok)}
.cur-ico.quiz{background:var(--warn-bg);color:var(--warn)}
.cur-ico.cert{background:var(--gold-50);color:var(--gold-600)}
.cur-name{font-size:14.2px;font-weight:700}
.cur-sub{font-size:12.2px;color:var(--muted);margin-top:2px}

/* ===== Tables ===== */
.tbl-wrap{overflow-x:auto}
table.tbl{width:100%;border-collapse:collapse;font-size:13.6px;min-width:640px}
table.tbl th{text-align:left;padding:12px 14px;background:var(--surface-2);color:var(--muted);font-weight:700;font-size:12.5px;
  border-bottom:1px solid var(--border);white-space:nowrap}
table.tbl td{padding:12px 14px;border-bottom:1px solid var(--border);vertical-align:middle}
table.tbl tbody tr{transition:.14s var(--ease)}
table.tbl tbody tr:hover{background:var(--brand-50)}
table.tbl td.num{text-align:right;font-variant-numeric:tabular-nums}
table.tbl th.num{text-align:right}
.person{display:flex;align-items:center;gap:9px}
.avatar{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;color:#fff;font-size:11.5px;font-weight:800;flex-shrink:0}

/* progress */
.bar{height:7px;border-radius:99px;background:#eef1f7;overflow:hidden;min-width:76px}
.bar i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--brand-500),var(--ai-500));transition:width .5s var(--ease)}
.bar.ok i{background:linear-gradient(90deg,#16a97a,#0f9d6e)}
.bar-row{display:flex;align-items:center;gap:9px}
.bar-row b{font-size:12.5px;min-width:36px;font-variant-numeric:tabular-nums}

/* ===== Dashboard shell ===== */
.dash{display:grid;grid-template-columns:244px 1fr;min-height:calc(100vh - var(--nav-h) - var(--bar-h))}
.dash-side{background:#0e1830;color:#c7d5ee;padding:22px 14px;position:sticky;top:calc(var(--nav-h) + var(--bar-h));height:calc(100vh - var(--nav-h) - var(--bar-h));overflow-y:auto}
.dash-side.light{background:#fff;border-right:1px solid var(--border);color:var(--text-2)}
.ds-brand{padding:8px 12px 18px;border-bottom:1px solid rgba(255,255,255,.1);margin-bottom:14px}
.ds-brand b{display:block;font-size:15px;color:#fff;font-weight:800}
.ds-brand span{font-size:11.5px;color:#8fa4c9}
.ds-nav{display:flex;flex-direction:column;gap:2px}
.ds-nav .lbl{font-size:11px;color:#6f83a8;padding:12px 12px 6px;font-weight:800;letter-spacing:.05em}
.ds-nav a{display:flex;align-items:center;gap:10px;padding:9.5px 12px;border-radius:10px;font-size:13.7px;font-weight:600;cursor:pointer;transition:.16s var(--ease)}
.ds-nav a:hover{background:rgba(255,255,255,.08);color:#fff}
.ds-nav a.on{background:linear-gradient(135deg,var(--brand-600),var(--ai-600));color:#fff;box-shadow:0 8px 20px rgba(37,99,235,.3)}
.dash-main{padding:28px 32px 60px;background:var(--bg);min-width:0}
.dash-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:22px;flex-wrap:wrap}
.dash-head h2{font-size:24px}
.dash-head p{color:var(--muted);font-size:13.6px;margin-top:6px}

/* KPI cards */
.kpis{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-bottom:22px}
.kpis.k4{grid-template-columns:repeat(4,1fr)}
.kpis.k3{grid-template-columns:repeat(3,1fr)}
.kpi{background:#fff;border:1px solid var(--border);border-radius:var(--r);padding:17px 18px;transition:.2s var(--ease);box-shadow:var(--sh-1)}
.kpi:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.kpi .l{font-size:12.5px;color:var(--muted);font-weight:600}
.kpi .v{font-size:26px;font-weight:900;letter-spacing:-.04em;margin-top:5px;font-variant-numeric:tabular-nums}
.kpi .d{font-size:11.8px;margin-top:4px;font-weight:700}
.kpi .d.up{color:var(--ok)}
.kpi .d.dn{color:var(--danger)}
.kpi.accent{background:linear-gradient(140deg,#122045,#24204f);border-color:transparent;color:#fff}
.kpi.accent .l{color:#9fb4da}
.kpi.accent .v{background:linear-gradient(100deg,#fff,#bcd4ff);-webkit-background-clip:text;background-clip:text;color:transparent}

/* charts */
.chart-box{width:100%}
.chart-legend{display:flex;gap:14px;flex-wrap:wrap;margin-top:12px;font-size:12.5px;color:var(--text-2)}
.chart-legend i{width:10px;height:10px;border-radius:3px;display:inline-block;margin-right:6px}

/* ===== Learning player ===== */
.learn{display:grid;grid-template-columns:318px 1fr;min-height:calc(100vh - var(--nav-h) - var(--bar-h))}
.learn-side{background:#fff;border-right:1px solid var(--border);position:sticky;top:calc(var(--nav-h) + var(--bar-h));
  height:calc(100vh - var(--nav-h) - var(--bar-h));overflow-y:auto}
.ls-head{padding:20px;border-bottom:1px solid var(--border)}
.ls-head h3{font-size:15.6px;line-height:1.44}
.ls-prog{margin-top:14px}
.ls-list{padding:10px}
.ls-week{font-size:11.5px;font-weight:800;color:var(--muted);padding:12px 10px 6px;letter-spacing:.03em}
.ls-item{display:flex;align-items:flex-start;gap:10px;padding:11px 10px;border-radius:11px;cursor:pointer;transition:.15s var(--ease)}
.ls-item:hover{background:var(--surface-2)}
.ls-item.on{background:var(--brand-50);box-shadow:inset 0 0 0 1px var(--brand-200)}
.ls-item .st{width:22px;height:22px;border-radius:50%;border:2px solid var(--border-strong);display:grid;place-items:center;
  flex-shrink:0;margin-top:2px;font-size:10px;font-weight:900;color:var(--muted-2);background:#fff}
.ls-item.done .st{background:var(--ok);border-color:var(--ok);color:#fff}
.ls-item.on .st{border-color:var(--brand-600);color:var(--brand-600)}
.ls-item .t{font-size:13.6px;font-weight:650;line-height:1.44}
.ls-item.done .t{color:var(--muted)}
.ls-item .m{font-size:11.6px;color:var(--muted-2);margin-top:3px}
.learn-main{padding:30px 40px 90px;max-width:1000px;min-width:0}
.lm-head{margin-bottom:20px}
.lm-head .k{font-size:12.5px;font-weight:800;color:var(--brand-600)}
.lm-head h2{font-size:26px;margin-top:6px}
.lm-nav{display:flex;justify-content:space-between;gap:12px;margin-top:34px;padding-top:22px;border-top:1px solid var(--border)}

/* video mock */
.video-mock{aspect-ratio:16/9;border-radius:var(--r-lg);background:linear-gradient(150deg,#0d1730,#1d2d58 60%,#2a1f57);
  display:grid;place-items:center;position:relative;overflow:hidden;box-shadow:var(--sh-2)}
.video-mock::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:44px 44px}
.vm-play{position:relative;z-index:2;width:76px;height:76px;border-radius:50%;background:rgba(255,255,255,.94);display:grid;place-items:center;
  cursor:pointer;transition:.2s var(--ease);box-shadow:0 14px 40px rgba(0,0,0,.35)}
.vm-play:hover{transform:scale(1.08)}
.vm-cap{position:absolute;bottom:0;left:0;right:0;z-index:2;padding:16px 18px;color:#fff;
  background:linear-gradient(transparent,rgba(3,8,20,.86))}
.vm-cap .t{font-size:14.5px;font-weight:700}
.vm-cap .s{font-size:12px;color:#b4c6e6;margin-top:3px}
.vm-line{position:absolute;bottom:0;left:0;height:4px;background:linear-gradient(90deg,var(--brand-400),var(--ai-400,#9b7cff));z-index:3;transition:width .4s var(--ease)}

/* content blocks */
.cblock{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);padding:22px;margin-top:18px;box-shadow:var(--sh-1)}
.cblock h4{font-size:16px;margin-bottom:12px}
.keylist{display:flex;flex-direction:column;gap:10px}
.keylist li{display:flex;gap:11px;font-size:14.2px;color:var(--text-2);line-height:1.66}
.keylist li .n{width:22px;height:22px;border-radius:7px;background:var(--brand-50);color:var(--brand-700);display:grid;place-items:center;
  font-size:11.5px;font-weight:900;flex-shrink:0;margin-top:2px}

/* ===== AI Lab ===== */
.ailab{border:1px solid #ddd2ff;border-radius:var(--r-lg);overflow:hidden;background:#fff;box-shadow:0 10px 30px rgba(109,63,239,.1)}
.ailab-head{background:linear-gradient(120deg,var(--ai-600),var(--brand-600));color:#fff;padding:18px 22px}
.ailab-head .k{font-size:11.8px;font-weight:800;opacity:.9;letter-spacing:.05em}
.ailab-head h4{font-size:18px;margin-top:5px}
.ailab-head p{font-size:13.2px;color:#e2dcff;margin-top:6px}
.ailab-mission{margin:18px 22px;padding:16px 18px;background:var(--ai-50);border:1px dashed var(--ai-300);border-radius:var(--r)}
.ailab-mission .l{font-size:11.8px;font-weight:900;color:var(--ai-700);letter-spacing:.04em}
.ailab-mission p{font-size:14.2px;margin-top:7px;color:#392a66;line-height:1.66}
.ailab-body{padding:0 22px 22px}
.chat-log{display:flex;flex-direction:column;gap:14px;max-height:440px;overflow-y:auto;padding:6px 2px 14px}
.msg{display:flex;gap:11px;max-width:92%}
.msg.me{margin-left:auto;flex-direction:row-reverse}
.msg .ava{width:32px;height:32px;border-radius:10px;display:grid;place-items:center;flex-shrink:0;font-size:12px;font-weight:800;color:#fff}
.msg.ai .ava{background:linear-gradient(135deg,var(--ai-600),var(--brand-600))}
.msg.me .ava{background:linear-gradient(135deg,#334155,#0f172a)}
.msg .bub{padding:12px 15px;border-radius:14px;font-size:14px;line-height:1.7;white-space:pre-wrap}
.msg.ai .bub{background:var(--surface-2);border:1px solid var(--border);border-top-left-radius:4px}
.msg.me .bub{background:var(--brand-600);color:#fff;border-top-right-radius:4px}
.msg .bub strong{font-weight:800}
.typing{display:inline-flex;gap:4px;align-items:center}
.typing i{width:6px;height:6px;border-radius:50%;background:var(--muted-2);animation:tp 1.2s infinite}
.typing i:nth-child(2){animation-delay:.16s}.typing i:nth-child(3){animation-delay:.32s}
@keyframes tp{0%,60%,100%{opacity:.3;transform:translateY(0)}30%{opacity:1;transform:translateY(-3px)}}
.composer{display:flex;gap:10px;align-items:flex-end;border:1px solid var(--border-strong);border-radius:14px;padding:10px;background:#fff;transition:.18s var(--ease)}
.composer:focus-within{border-color:var(--ai-300);box-shadow:0 0 0 4px var(--ai-50)}
.composer textarea{flex:1;border:none;resize:none;font-family:inherit;font-size:14.2px;line-height:1.6;min-height:56px;max-height:160px;outline:none;color:var(--text);background:transparent}
.ailab-tools{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.ai-type{display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 11px;border-radius:9px;border:1px solid var(--border);
  background:#fff;font-size:12.2px;font-weight:700;color:var(--text-2);cursor:pointer;transition:.16s var(--ease)}
.ai-type:hover{border-color:var(--ai-300);color:var(--ai-700);background:var(--ai-50)}
.ai-type.on{background:var(--ai-600);border-color:var(--ai-600);color:#fff}

/* submission */
.submit-box{margin-top:16px;border:1px solid var(--border);border-radius:var(--r);padding:16px;background:var(--surface-2)}
.feedback{margin-top:14px;border-left:3px solid var(--ok);background:var(--ok-bg);padding:14px 16px;border-radius:0 12px 12px 0}
.feedback .who{font-size:12.5px;font-weight:800;color:#0b6f51}
.feedback p{font-size:13.8px;color:#175f4a;margin-top:5px;line-height:1.66}

/* ===== Quiz ===== */
.quiz-q{border:1px solid var(--border);border-radius:var(--r);padding:20px;margin-bottom:14px;background:#fff}
.quiz-q .qn{font-size:12px;font-weight:900;color:var(--brand-600)}
.quiz-q h4{font-size:16px;margin:8px 0 14px;line-height:1.5}
.opt{display:flex;align-items:flex-start;gap:11px;padding:12px 14px;border:1px solid var(--border);border-radius:11px;margin-bottom:8px;
  cursor:pointer;transition:.16s var(--ease);font-size:14.2px}
.opt:hover{border-color:var(--brand-300);background:var(--brand-50)}
.opt.sel{border-color:var(--brand-600);background:var(--brand-50);box-shadow:inset 0 0 0 1px var(--brand-600)}
.opt.right{border-color:var(--ok);background:var(--ok-bg)}
.opt.wrong{border-color:var(--danger);background:var(--danger-bg)}
.opt .mk{width:22px;height:22px;border-radius:50%;border:2px solid var(--border-strong);flex-shrink:0;display:grid;place-items:center;
  font-size:11px;font-weight:900;color:var(--muted);background:#fff;margin-top:1px}
.opt.sel .mk{border-color:var(--brand-600);background:var(--brand-600);color:#fff}
.opt.right .mk{border-color:var(--ok);background:var(--ok);color:#fff}
.opt.wrong .mk{border-color:var(--danger);background:var(--danger);color:#fff}
.quiz-exp{margin-top:10px;font-size:13.2px;color:var(--text-2);background:var(--surface-2);border-radius:10px;padding:11px 13px;line-height:1.65}
.score-ring{width:132px;height:132px;border-radius:50%;display:grid;place-items:center;margin:0 auto;
  background:conic-gradient(var(--brand-600) var(--p,0%), #eef1f7 0);position:relative}
.score-ring::after{content:"";position:absolute;inset:11px;background:#fff;border-radius:50%}
.score-ring .v{position:relative;z-index:2;font-size:30px;font-weight:900;letter-spacing:-.04em}

/* ===== Certificate ===== */
.cert-paper{background:#fff;border-radius:var(--r-lg);box-shadow:var(--sh-3);overflow:hidden;max-width:840px;margin:0 auto;position:relative}
.cert-paper.gold{border:1px solid var(--gold-300)}
.cert-band{height:9px;background:linear-gradient(90deg,var(--brand-600),var(--ai-600),#caa03a)}
.cert-in{padding:46px 56px 40px;position:relative}
.cert-in::before{content:"";position:absolute;inset:18px;border:1px solid #eceff6;border-radius:12px;pointer-events:none}
.cert-in.gold::before{border-color:#f0e2bd}
.cert-org{display:flex;align-items:center;justify-content:center;gap:10px;position:relative}
.cert-org .m{width:36px;height:36px;border-radius:11px;background:linear-gradient(135deg,var(--brand-600),var(--ai-600));display:grid;place-items:center;color:#fff;font-weight:900;font-size:13px}
.cert-org b{font-size:16px;letter-spacing:-.02em}
.cert-kind{text-align:center;margin-top:26px;position:relative}
.cert-kind .en{font-size:12px;letter-spacing:.34em;color:var(--muted);font-weight:700}
.cert-kind h2{font-size:34px;margin-top:8px;letter-spacing:.1em}
.cert-no{text-align:center;font-size:12.5px;color:var(--muted);margin-top:10px;position:relative}
.cert-grade{display:block;text-align:center;margin-top:18px;position:relative}
.cert-grade span{display:inline-block;padding:8px 22px;border-radius:999px;font-size:15px;font-weight:800;
  background:linear-gradient(135deg,#fdf3d8,#f7e6b4);color:#8a6512;border:1px solid #e9d49b}
.cert-fields{margin-top:30px;position:relative;display:flex;flex-direction:column;gap:0}
.cert-field{display:flex;gap:18px;padding:14px 6px;border-bottom:1px solid #eef1f7;font-size:15px}
.cert-field .l{width:110px;color:var(--muted);font-size:13.5px;flex-shrink:0;font-weight:600}
.cert-field .v{font-weight:800}
.cert-body{text-align:center;margin-top:28px;font-size:14.8px;color:var(--text-2);line-height:1.86;position:relative}
.cert-sign{display:flex;align-items:flex-end;justify-content:space-between;margin-top:36px;position:relative;gap:24px}
.cert-issuer{text-align:left}
.cert-issuer .d{font-size:13px;color:var(--muted)}
.cert-issuer .o{font-size:19px;font-weight:900;margin-top:6px}
.cert-issuer .p{font-size:12.5px;color:var(--muted);margin-top:2px}
.cert-seal{width:82px;height:82px;border-radius:50%;border:2.5px solid #c9992c;color:#a87d1a;display:grid;place-items:center;
  text-align:center;font-size:10.5px;font-weight:900;line-height:1.3;transform:rotate(-9deg);background:#fffdf5}
.qr-wrap{display:flex;gap:16px;align-items:center;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r);padding:14px 16px;margin-top:26px;position:relative}
.qr{width:88px;height:88px;background:#fff;padding:5px;border-radius:8px;border:1px solid var(--border);flex-shrink:0}
.qr svg{display:block;width:100%;height:100%}
.qr-wrap .txt{font-size:12.6px;color:var(--text-2);line-height:1.66}
.qr-wrap .txt b{display:block;font-size:13.6px;color:var(--text);margin-bottom:4px}

/* ===== Builder ===== */
.builder{display:grid;grid-template-columns:260px 1fr 292px;gap:18px;align-items:start}
.blk-palette{display:flex;flex-direction:column;gap:8px}
.blk-btn{display:flex;align-items:center;gap:11px;padding:12px 14px;border:1px solid var(--border);border-radius:12px;background:#fff;
  cursor:pointer;transition:.18s var(--ease);text-align:left;width:100%}
.blk-btn:hover{border-color:var(--brand-300);transform:translateX(3px);box-shadow:var(--sh-2)}
.blk-btn .i{width:32px;height:32px;border-radius:9px;display:grid;place-items:center;flex-shrink:0}
.blk-btn b{display:block;font-size:13.6px}
.blk-btn span{font-size:11.6px;color:var(--muted)}
.bl-day{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r);margin-bottom:14px;overflow:hidden}
.bl-day-h{display:flex;align-items:center;justify-content:space-between;padding:11px 14px;background:#fff;border-bottom:1px solid var(--border)}
.bl-day-h b{font-size:13.6px}
.bl-items{padding:10px;display:flex;flex-direction:column;gap:8px;min-height:56px}
.bl-item{display:flex;align-items:center;gap:11px;padding:11px 12px;background:#fff;border:1px solid var(--border);border-radius:11px;
  cursor:grab;transition:.16s var(--ease)}
.bl-item:hover{border-color:var(--brand-300);box-shadow:var(--sh-1)}
.bl-item.dragging{opacity:.45}
.bl-item .i{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;flex-shrink:0}
.bl-item .tt{flex:1;min-width:0}
.bl-item .tt b{display:block;font-size:13.6px;font-weight:700}
.bl-item .tt span{font-size:11.6px;color:var(--muted)}
.bl-item .acts{display:flex;gap:3px;opacity:.35;transition:.16s var(--ease)}
.bl-item:hover .acts{opacity:1}
.iconbtn{width:26px;height:26px;border-radius:7px;border:1px solid var(--border);background:#fff;cursor:pointer;display:grid;place-items:center;color:var(--muted);transition:.15s var(--ease)}
.iconbtn:hover{border-color:var(--brand-400);color:var(--brand-600);background:var(--brand-50)}
.iconbtn.dg:hover{border-color:var(--danger);color:var(--danger);background:var(--danger-bg)}
.drop-hint{border:2px dashed var(--border-strong);border-radius:12px;padding:18px;text-align:center;color:var(--muted-2);font-size:13px}

/* ===== Forms ===== */
.field{margin-bottom:15px}
.field label{display:block;font-size:13px;font-weight:700;margin-bottom:7px;color:var(--text-2)}
.field label .req{color:var(--danger)}
.input,.textarea,select.input{
  width:100%;border:1px solid var(--border-strong);border-radius:11px;padding:11px 13px;font-size:14.2px;font-family:inherit;
  background:#fff;transition:.18s var(--ease);color:var(--text)
}
.input:focus,.textarea:focus,select.input:focus{outline:none;border-color:var(--brand-400);box-shadow:0 0 0 4px var(--brand-50)}
.textarea{min-height:92px;resize:vertical;line-height:1.62}
.f2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.f3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.radios{display:flex;gap:8px;flex-wrap:wrap}
.radio{padding:9px 14px;border:1px solid var(--border-strong);border-radius:10px;font-size:13.4px;font-weight:700;cursor:pointer;
  background:#fff;color:var(--text-2);transition:.16s var(--ease)}
.radio:hover{border-color:var(--brand-300)}
.radio.on{background:var(--brand-600);border-color:var(--brand-600);color:#fff}

/* ===== Modal ===== */
.modal-bg{position:fixed;inset:0;background:rgba(8,14,30,.55);backdrop-filter:blur(3px);z-index:200;display:flex;
  align-items:flex-start;justify-content:center;padding:60px 20px;overflow-y:auto;animation:fade .18s var(--ease)}
@keyframes fade{from{opacity:0}to{opacity:1}}
.modal{background:#fff;border-radius:var(--r-xl);width:100%;max-width:580px;box-shadow:0 34px 90px rgba(0,0,0,.35);
  animation:pop .22s var(--ease);overflow:hidden}
.modal.wide{max-width:800px}
.modal.narrow{max-width:440px}
@keyframes pop{from{opacity:0;transform:translateY(14px) scale(.98)}to{opacity:1;transform:none}}
.modal-head{padding:22px 26px 16px;border-bottom:1px solid var(--border);display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.modal-head h3{font-size:19px}
.modal-head p{font-size:13.2px;color:var(--muted);margin-top:5px}
.modal-body{padding:22px 26px;max-height:66vh;overflow-y:auto}
.modal-foot{padding:16px 26px 22px;display:flex;gap:10px;justify-content:flex-end;border-top:1px solid var(--border);background:var(--surface-2)}
.x-btn{width:32px;height:32px;border-radius:9px;border:1px solid var(--border);background:#fff;cursor:pointer;display:grid;place-items:center;color:var(--muted);flex-shrink:0}
.x-btn:hover{background:#f1f4f9;color:var(--text)}

/* role picker */
.roles{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.role-card{border:1px solid var(--border);border-radius:var(--r);padding:18px;cursor:pointer;transition:.2s var(--ease);background:#fff;text-align:left}
.role-card:hover{border-color:var(--brand-400);transform:translateY(-3px);box-shadow:var(--sh-2)}
.role-card .i{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;margin-bottom:12px}
.role-card b{display:block;font-size:15px}
.role-card span{font-size:12.4px;color:var(--muted);line-height:1.55;display:block;margin-top:4px}

/* payment */
.pay-opt{display:flex;align-items:center;gap:12px;padding:14px;border:1px solid var(--border);border-radius:12px;margin-bottom:9px;cursor:pointer;transition:.16s var(--ease)}
.pay-opt:hover{border-color:var(--brand-300);background:var(--brand-50)}
.pay-opt.on{border-color:var(--brand-600);background:var(--brand-50);box-shadow:inset 0 0 0 1px var(--brand-600)}
.pay-logo{width:44px;height:30px;border-radius:8px;display:grid;place-items:center;font-size:11px;font-weight:900;color:#fff;flex-shrink:0}
.receipt{border:1px solid var(--border);border-radius:var(--r);padding:16px;background:var(--surface-2)}
.receipt .r{display:flex;justify-content:space-between;font-size:13.6px;padding:6px 0}
.receipt .r.total{border-top:1px dashed var(--border-strong);margin-top:8px;padding-top:12px;font-size:16px;font-weight:900}

/* success */
.done-ico{width:76px;height:76px;border-radius:50%;background:var(--ok-bg);display:grid;place-items:center;margin:0 auto 18px;color:var(--ok);
  animation:pin .4s var(--ease)}
@keyframes pin{from{transform:scale(.6);opacity:0}to{transform:scale(1);opacity:1}}

/* ===== AI Tutor ===== */
.tutor-fab{position:fixed;right:26px;bottom:26px;z-index:150;display:flex;align-items:center;gap:10px;height:54px;padding:0 20px 0 16px;
  border-radius:999px;border:none;cursor:pointer;color:#fff;font-weight:800;font-size:14.5px;
  background:linear-gradient(135deg,var(--ai-600),var(--brand-600));box-shadow:0 16px 40px rgba(109,63,239,.42);transition:.2s var(--ease)}
.tutor-fab:hover{transform:translateY(-3px) scale(1.03)}
.tutor-fab .pulse{width:9px;height:9px;border-radius:50%;background:#7dffc0;box-shadow:0 0 0 0 rgba(125,255,192,.7);animation:pl 2s infinite}
@keyframes pl{70%{box-shadow:0 0 0 9px rgba(125,255,192,0)}100%{box-shadow:0 0 0 0 rgba(125,255,192,0)}}
.tutor-panel{position:fixed;right:26px;bottom:26px;z-index:160;width:392px;max-width:calc(100vw - 32px);height:582px;max-height:calc(100vh - 120px);
  background:#fff;border-radius:22px;box-shadow:0 34px 90px rgba(8,14,30,.4);display:flex;flex-direction:column;overflow:hidden;
  animation:pop .22s var(--ease);border:1px solid var(--border)}
.tp-head{background:linear-gradient(120deg,var(--ai-600),var(--brand-600));color:#fff;padding:16px 18px;display:flex;align-items:center;gap:11px}
.tp-head .ava{width:36px;height:36px;border-radius:12px;background:rgba(255,255,255,.2);display:grid;place-items:center}
.tp-head b{font-size:14.8px;display:block}
.tp-head span{font-size:11.6px;color:#ddd6ff}
.tp-head .x-btn{margin-left:auto;background:rgba(255,255,255,.14);border-color:transparent;color:#fff}
.tp-head .x-btn:hover{background:rgba(255,255,255,.26);color:#fff}
.tp-ctx{padding:10px 16px;background:var(--ai-50);border-bottom:1px solid #e7e0ff;font-size:12px;color:var(--ai-700);font-weight:600}
.tp-log{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:13px;background:var(--surface-2)}
.tp-log .msg{max-width:97%}
.tp-log .msg .bub{font-size:13.4px}
.tp-sugg{display:flex;gap:6px;flex-wrap:wrap;padding:10px 14px;background:#fff;border-top:1px solid var(--border)}
.tp-sugg button{border:1px solid var(--border-strong);background:#fff;border-radius:999px;padding:6px 11px;font-size:11.8px;cursor:pointer;
  color:var(--text-2);font-weight:600;transition:.15s var(--ease)}
.tp-sugg button:hover{border-color:var(--ai-300);color:var(--ai-700);background:var(--ai-50)}
.tp-input{display:flex;gap:8px;padding:12px 14px;border-top:1px solid var(--border);background:#fff}
.tp-input input{flex:1;border:1px solid var(--border-strong);border-radius:11px;padding:10px 12px;font-size:13.6px;font-family:inherit;outline:none}
.tp-input input:focus{border-color:var(--ai-300);box-shadow:0 0 0 3px var(--ai-50)}
.tp-send{width:42px;border-radius:11px;border:none;background:linear-gradient(135deg,var(--ai-600),var(--brand-600));color:#fff;cursor:pointer;display:grid;place-items:center}

/* ===== Toast ===== */
#toast-root{position:fixed;top:calc(var(--nav-h) + var(--bar-h) + 16px);right:24px;z-index:300;display:flex;flex-direction:column;gap:9px}
.toast{background:#0f172a;color:#fff;padding:13px 18px;border-radius:13px;font-size:13.6px;font-weight:600;box-shadow:0 14px 40px rgba(0,0,0,.3);
  animation:tin .26s var(--ease);display:flex;align-items:center;gap:9px;max-width:380px}
.toast.ok{background:linear-gradient(135deg,#0f9d6e,#0b7a58)}
.toast.ai{background:linear-gradient(135deg,var(--ai-600),var(--brand-600))}
@keyframes tin{from{opacity:0;transform:translateX(24px)}to{opacity:1;transform:none}}

/* ===== Steps (대학 맞춤연수) ===== */
.steps8{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.step8{background:#fff;border:1px solid var(--border);border-radius:var(--r);padding:20px;position:relative;transition:.2s var(--ease);box-shadow:var(--sh-1)}
.step8:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:var(--brand-200)}
.step8 .n{position:absolute;right:16px;top:14px;font-size:26px;font-weight:900;color:var(--brand-50);letter-spacing:-.05em}
.step8 .i{width:38px;height:38px;border-radius:11px;background:var(--brand-50);color:var(--brand-600);display:grid;place-items:center;margin-bottom:12px}
.step8 b{font-size:11.5px;color:var(--brand-600);font-weight:900;letter-spacing:.06em}
.step8 h5{font-size:15.5px;margin:5px 0 6px}
.step8 p{font-size:13px;color:var(--text-2);line-height:1.6}

/* ===== University academy ===== */
.uni-hero{background:linear-gradient(135deg,#0b2a4a,#123a63 55%,#1d3f7a);color:#fff;padding:40px 0;position:relative;overflow:hidden}
.uni-hero::after{content:"";position:absolute;inset:0;background-image:radial-gradient(600px 300px at 85% 0%,rgba(124,92,250,.4),transparent 62%)}
.uni-hero .wrap{position:relative;z-index:2}
.uni-logo{width:66px;height:66px;border-radius:18px;background:#fff;display:grid;place-items:center;color:#123a63;font-weight:900;font-size:18px;
  letter-spacing:-.05em;box-shadow:0 12px 30px rgba(0,0,0,.26);text-align:center;line-height:1.15}
.uni-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:28px}
.uni-stat{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);border-radius:var(--r);padding:16px 18px}
.uni-stat .l{font-size:12.2px;color:#a9c3e6}
.uni-stat .v{font-size:25px;font-weight:900;margin-top:3px;letter-spacing:-.03em}

/* timeline */
.tl{position:relative;padding-left:26px}
.tl::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:var(--border-strong)}
.tl-item{position:relative;padding-bottom:20px}
.tl-item::before{content:"";position:absolute;left:-24px;top:5px;width:14px;height:14px;border-radius:50%;background:#fff;border:3px solid var(--brand-500)}
.tl-item.ai::before{border-color:var(--ai-500)}
.tl-item.off::before{border-color:var(--ok)}
.tl-item.gold::before{border-color:var(--gold-500)}
.tl-item b{font-size:14.2px}
.tl-item p{font-size:13px;color:var(--muted);margin-top:3px}

/* board */
.post{padding:16px 0;border-bottom:1px solid var(--border)}
.post:last-child{border-bottom:none}
.post-h{display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.post-h b{font-size:13.8px}
.post-h .t{font-size:12px;color:var(--muted-2)}
.post-title{font-size:14.8px;font-weight:700;margin-top:8px}
.post-body{font-size:13.8px;color:var(--text-2);margin-top:6px;line-height:1.7}
.reply{margin-top:12px;margin-left:22px;padding:13px 15px;background:var(--surface-2);border-radius:12px;border-left:3px solid var(--brand-500)}
.reply .who{font-size:12.5px;font-weight:800;color:var(--brand-700)}
.reply p{font-size:13.4px;color:var(--text-2);margin-top:4px;line-height:1.68}

/* empty */
.empty{text-align:center;padding:56px 20px;color:var(--muted)}
.empty .i{width:64px;height:64px;border-radius:20px;background:var(--surface-2);display:grid;place-items:center;margin:0 auto 16px;color:var(--muted-2)}
.empty b{display:block;font-size:16px;color:var(--text);margin-bottom:6px}

/* footer */
#site-footer{background:#0c1426;color:#8fa0bf;padding:52px 0 34px;margin-top:0}
.ft-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}
.ft-brand b{color:#fff;font-size:16px;display:block}
.ft-brand p{font-size:13px;margin-top:10px;line-height:1.7;max-width:320px}
.ft-col h5{color:#fff;font-size:13.4px;margin-bottom:12px;font-weight:800}
.ft-col a{display:block;font-size:13px;padding:4px 0;cursor:pointer;transition:.15s var(--ease)}
.ft-col a:hover{color:#fff}
.ft-bot{margin-top:34px;padding-top:22px;border-top:1px solid rgba(255,255,255,.09);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.4px}
.powered{display:inline-flex;align-items:center;gap:7px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);
  border-radius:999px;padding:6px 14px;color:#c3d2ec;font-size:12.2px;font-weight:700}

/* charts svg */
svg.chart{display:block;width:100%;height:auto;overflow:visible}
svg.chart text{font-family:inherit;fill:var(--muted);font-size:11.5px}
svg.chart .lbl{fill:var(--text-2);font-weight:600}
svg.chart .val{fill:var(--text);font-weight:800;font-size:12px}
svg.chart .grid{stroke:#eef1f7;stroke-width:1}

/* app main offset */
#app{padding-top:calc(var(--nav-h) + var(--bar-h));min-height:60vh}

/* print (수료증/자격증) */
@media print{
  #demo-bar,#topnav,#site-footer,#tutor-root,#modal-root,#toast-root,.no-print{display:none!important}
  #app{padding-top:0}
  body{background:#fff}
  .cert-paper{box-shadow:none;border:1px solid #ddd;max-width:100%}
  .section{padding:0}
}

/* ===== Responsive ===== */
@media (max-width:1180px){
  .course-grid{grid-template-columns:repeat(3,1fr)}
  .kpis,.kpis.k4{grid-template-columns:repeat(3,1fr)}
  .builder{grid-template-columns:220px 1fr}
  .builder .b-right{grid-column:1/-1}
  .nav-menu a{padding:9px 10px;font-size:13.6px}
}
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:36px;padding:56px 0}
  .hero h1{font-size:40px}
  .cd-layout{grid-template-columns:1fr}
  .buy-card{position:static}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .steps8{grid-template-columns:repeat(2,1fr)}
  .journey{grid-template-columns:repeat(2,1fr)}
  .pt-grid{grid-template-columns:1fr}
  .pt-x{margin:6px 0}
  .learn{grid-template-columns:1fr}
  .learn-side{position:static;height:auto;border-right:none;border-bottom:1px solid var(--border);max-height:340px}
  .learn-main{padding:24px 20px 80px}
  .dash{grid-template-columns:1fr}
  .dash-side{position:static;height:auto;display:flex;gap:6px;overflow-x:auto;padding:12px}
  .dash-side .ds-brand{display:none}
  .dash-side .ds-nav{flex-direction:row;gap:6px}
  .dash-side .ds-nav .lbl{display:none}
  .dash-side .ds-nav a{white-space:nowrap}
  .dash-main{padding:22px 20px 60px}
}
@media (max-width:860px){
  .wrap,.wrap-wide,.nav-inner{padding:0 18px}
  .nav-menu{display:none}
  .nav-burger{display:grid;place-items:center;width:40px;height:40px;border-radius:11px;border:1px solid var(--border);background:#fff;cursor:pointer}
  .nav-menu.open{display:flex;position:absolute;top:var(--nav-h);left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;
    padding:12px;border-bottom:1px solid var(--border);box-shadow:var(--sh-2);gap:2px}
  .nav-inner{gap:12px}
  .nav-right{gap:7px}
  .nav-role .rname,.nav-role .rtag,.nav-role .ico{display:none}
  .nav-role{padding:4px;border-radius:50%}
  .nav-right>.btn{display:none}
  .brand-txt span{display:none}
  .course-grid{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .kpis,.kpis.k4,.kpis.k3{grid-template-columns:repeat(2,1fr)}
  .kpi-strip{grid-template-columns:repeat(2,1fr)}
  .uni-stats{grid-template-columns:repeat(2,1fr)}
  .ft-grid{grid-template-columns:1fr 1fr}
  .f2,.f3{grid-template-columns:1fr}
  .builder{grid-template-columns:1fr}
  .hero h1{font-size:33px}
  .sec-title{font-size:24px}
  .cd-hero h1{font-size:27px}
  .cert-in{padding:30px 24px}
  .tutor-panel{right:12px;bottom:12px;height:calc(100vh - 140px)}
}
@media (max-width:600px){
  .course-grid{grid-template-columns:1fr}
  .journey,.steps8{grid-template-columns:1fr}
  .roles{grid-template-columns:1fr}
  .kpis,.kpis.k4,.kpis.k3{grid-template-columns:1fr 1fr}
  #demo-bar{font-size:10.5px;padding:0 10px;gap:5px;white-space:nowrap}
  .dbar-long{display:none}
  .dbar-short{display:inline}
  #demo-bar .demo-reset{padding:2px 8px;font-size:10px;margin-left:4px}
  :root{--bar-h:30px}
  #demo-bar{height:30px}
  .cert-sign{flex-direction:column;align-items:flex-start}
}