/* Xin việc — hệ thống giao diện
   Nguyên tắc: nền giấy pastel, chữ nội dung Times New Roman, chữ giao diện sans-serif nhỏ gọn,
   thẻ thoáng, phân cấp rõ, chạm tối thiểu 44px, hỗ trợ sáng/tối. */

:root{
  --bg:#f6f7f3; --surface:#fffefa; --surface-2:#f1f5f0; --surface-3:#e9efe9;
  --ink:#193a3d; --ink-2:#3e5a57; --muted:#5a6c68; --line:#dde6e0; --line-2:#c9d8cf;
  --brand:#246d62; --brand-2:#1b5a50; --brand-ink:#fff; --brand-soft:#e2f2ea; --navy:#143a42;
  --mint:#e4f4ed; --warm:#faefe3; --rose:#f8ebe8; --blue:#e7eef8; --lilac:#efebf7; --sun:#fbf3d8;
  --mint-ink:#226454; --warm-ink:#8a5a2c; --rose-ink:#8f3f39; --blue-ink:#2c5282; --lilac-ink:#5b4785; --sun-ink:#7a6219;
  --ok:#2c7656; --warn:#9c5c22; --danger:#a3413a; --info:#2c5f86;
  --focus:#ef9f68;
  --shadow-sm:0 1px 2px rgba(25,58,61,.06),0 2px 8px rgba(25,58,61,.04);
  --shadow:0 10px 30px rgba(32,58,47,.08);
  --radius:18px; --radius-sm:12px; --radius-xs:9px;
  --font-body:"Times New Roman",Times,"Liberation Serif",Georgia,serif;
  --font-ui:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-mono:ui-monospace,"Cascadia Mono",Consolas,Menlo,monospace;
  --side-w:272px; --top-h:64px; --tab-h:64px;
  --safe-b:env(safe-area-inset-bottom,0px);
  /* màu hình minh họa */
  --il-ink:#1d4a4c; --il-line:#2f6b66; --il-a:#bfe3d3; --il-b:#f6d8bd; --il-c:#c9d9f0; --il-d:#f2c9c4; --il-e:#ddd3ef; --il-f:#f4e6a8; --il-paper:#ffffff; --il-soft:#eef5f0;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#111819; --surface:#172022; --surface-2:#1c2729; --surface-3:#223032;
    --ink:#e4eeeb; --ink-2:#c3d3cf; --muted:#93a6a1; --line:#27373a; --line-2:#344749;
    --brand:#62b9a6; --brand-2:#7ccab8; --brand-ink:#0d1b1a; --brand-soft:#1d3632; --navy:#d8ebe6;
    --mint:#1a312d; --warm:#33281d; --rose:#352423; --blue:#1b2838; --lilac:#272338; --sun:#302b18;
    --mint-ink:#9fd8c6; --warm-ink:#e6be92; --rose-ink:#eca9a2; --blue-ink:#a8c6ee; --lilac-ink:#c7b8ec; --sun-ink:#e5cf7c;
    --ok:#7fd0ac; --warn:#e5b07a; --danger:#f0948b; --info:#9cc7ea; --focus:#f0a46f;
    --shadow-sm:0 1px 2px rgba(0,0,0,.3); --shadow:0 10px 30px rgba(0,0,0,.35);
    --il-ink:#cfe5df; --il-line:#8cc9ba; --il-a:#2c5a4e; --il-b:#5c4630; --il-c:#2f4566; --il-d:#5a3936; --il-e:#463e60; --il-f:#5a5126; --il-paper:#22302f; --il-soft:#1c2a29;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#111819; --surface:#172022; --surface-2:#1c2729; --surface-3:#223032;
  --ink:#e4eeeb; --ink-2:#c3d3cf; --muted:#93a6a1; --line:#27373a; --line-2:#344749;
  --brand:#62b9a6; --brand-2:#7ccab8; --brand-ink:#0d1b1a; --brand-soft:#1d3632; --navy:#d8ebe6;
  --mint:#1a312d; --warm:#33281d; --rose:#352423; --blue:#1b2838; --lilac:#272338; --sun:#302b18;
  --mint-ink:#9fd8c6; --warm-ink:#e6be92; --rose-ink:#eca9a2; --blue-ink:#a8c6ee; --lilac-ink:#c7b8ec; --sun-ink:#e5cf7c;
  --ok:#7fd0ac; --warn:#e5b07a; --danger:#f0948b; --info:#9cc7ea; --focus:#f0a46f;
  --shadow-sm:0 1px 2px rgba(0,0,0,.3); --shadow:0 10px 30px rgba(0,0,0,.35);
  --il-ink:#cfe5df; --il-line:#8cc9ba; --il-a:#2c5a4e; --il-b:#5c4630; --il-c:#2f4566; --il-d:#5a3936; --il-e:#463e60; --il-f:#5a5126; --il-paper:#22302f; --il-soft:#1c2a29;
  color-scheme:dark;
}
:root[data-size="lg"]{font-size:112%}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font-body);font-size:17px;line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg{max-width:100%}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none;padding:0}
button:disabled{opacity:.5;cursor:not-allowed}
a{color:var(--brand);text-underline-offset:2px}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:6px}
h1[tabindex="-1"]:focus,#view:focus,.lesson-sec:focus{outline:none}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:12px;top:-60px;z-index:200;background:var(--brand);color:var(--brand-ink);padding:10px 14px;border-radius:10px;font:600 14px var(--font-ui)}
.skip:focus{top:12px}
.hide{display:none!important}
.ui{font-family:var(--font-ui)}
.ico{width:20px;height:20px;flex:0 0 auto;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;vertical-align:middle}
.ico.sm{width:16px;height:16px}.ico.lg{width:26px;height:26px}

/* ===== Khung ứng dụng ===== */
.app{display:grid;grid-template-columns:var(--side-w) minmax(0,1fr);min-height:100vh;min-height:100dvh}
.sidebar{position:sticky;top:0;height:100vh;height:100dvh;overflow-y:auto;border-right:1px solid var(--line);background:var(--surface);padding:22px 14px 18px;display:flex;flex-direction:column;gap:6px;scrollbar-width:thin}
.brand{display:flex;align-items:center;gap:11px;padding:4px 8px 14px;text-decoration:none;color:var(--ink)}
.brand-mark{width:40px;height:40px;flex:0 0 auto}
.brand-name{font:700 25px/1 var(--font-body);letter-spacing:-.6px}
.brand-sub{display:block;font:600 10.5px/1.2 var(--font-ui);letter-spacing:1.6px;text-transform:uppercase;color:var(--brand);margin-top:5px}
.nav-group{margin-top:10px}
.nav-label{font:700 10.5px var(--font-ui);letter-spacing:1.5px;text-transform:uppercase;color:var(--muted);padding:6px 12px}
.navbtn{display:flex;align-items:center;gap:11px;width:100%;min-height:42px;padding:9px 12px;border-radius:11px;color:var(--ink-2);font:500 14.5px var(--font-ui);text-align:left;text-decoration:none;position:relative}
.navbtn:hover{background:var(--surface-2);color:var(--ink)}
.navbtn[aria-current="page"]{background:var(--brand-soft);color:var(--brand-2);font-weight:650}
.navbtn[aria-current="page"]::before{content:"";position:absolute;left:-14px;top:9px;bottom:9px;width:4px;border-radius:0 4px 4px 0;background:var(--brand)}
.navbtn .count{margin-left:auto;font:600 11px var(--font-ui);background:var(--surface-3);color:var(--ink-2);border-radius:99px;padding:2px 7px}
.side-foot{margin-top:auto;padding:14px 12px;border-radius:14px;background:var(--surface-2);font:12.5px/1.5 var(--font-ui);color:var(--muted)}
.side-foot b{color:var(--ink-2)}
.main{min-width:0;display:flex;flex-direction:column}
.topbar{position:sticky;top:0;z-index:20;height:var(--top-h);display:flex;align-items:center;gap:10px;padding:0 clamp(16px,4vw,40px);background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid var(--line)}
.topbar .crumb{font:500 13.5px var(--font-ui);color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.topbar .crumb b{color:var(--ink);font-weight:650}
.topbar .brand-mobile{display:none;align-items:center;gap:8px;text-decoration:none;color:var(--ink);font:700 21px var(--font-body);letter-spacing:-.4px}
.topbar .brand-mobile svg{width:30px;height:30px}
.top-actions{margin-left:auto;display:flex;gap:6px;align-items:center}
.icon-btn{display:inline-grid;place-items:center;width:42px;height:42px;border-radius:12px;color:var(--ink-2);border:1px solid transparent}
.icon-btn:hover{background:var(--surface-2);border-color:var(--line)}
.content{width:100%;max-width:1160px;margin:0 auto;padding:32px clamp(16px,4vw,40px) 40px;flex:1}
.footer{max-width:1160px;margin:0 auto;width:100%;padding:18px clamp(16px,4vw,40px) 30px;border-top:1px solid var(--line);font:13px/1.6 var(--font-ui);color:var(--muted);display:flex;flex-wrap:wrap;gap:6px 16px;align-items:center}
.footer a{color:var(--ink-2)}
.tabbar{display:none}
.sheet-back{position:fixed;inset:0;z-index:60;background:rgba(14,32,30,.45);display:flex;align-items:flex-end;justify-content:center;animation:fade .15s ease}
.sheet{width:min(560px,100%);max-height:86vh;max-height:86dvh;overflow-y:auto;background:var(--surface);border-radius:22px 22px 0 0;padding:10px 16px calc(18px + var(--safe-b));box-shadow:var(--shadow);animation:up .2s ease}
.sheet .grab{width:44px;height:5px;border-radius:9px;background:var(--line-2);margin:4px auto 12px}
.sheet-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:6px 0 14px}
.sheet-grid .navbtn{flex-direction:column;justify-content:center;text-align:center;gap:6px;min-height:84px;font-size:12.5px;padding:10px 6px;background:var(--surface-2)}
.sheet-grid .navbtn[aria-current="page"]::before{display:none}
.sheet-grid .navbtn .ico{width:24px;height:24px}
@keyframes fade{from{opacity:0}to{opacity:1}}
@keyframes up{from{transform:translateY(30px);opacity:.6}to{transform:none;opacity:1}}

/* ===== Chữ & phân cấp ===== */
.eyebrow{font:700 11.5px var(--font-ui);text-transform:uppercase;letter-spacing:1.8px;color:var(--brand)}
.page-head{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:20px;align-items:end;margin-bottom:26px}
.page-head .art{width:min(220px,28vw);color:var(--il-ink)}
h1,.h1{font-size:clamp(30px,3.6vw,44px);line-height:1.1;letter-spacing:-.8px;margin:8px 0 10px;font-weight:700}
h2,.h2{font-size:clamp(23px,2.3vw,28px);line-height:1.2;letter-spacing:-.3px;margin:0 0 12px}
h3,.h3{font-size:20.5px;line-height:1.25;margin:0 0 8px}
h4,.h4{font:700 13px var(--font-ui);letter-spacing:.6px;text-transform:uppercase;color:var(--ink-2);margin:18px 0 8px}
.lead{font-size:18.5px;color:var(--ink-2);max-width:760px;margin:0}
p{margin:0 0 12px}
.muted{color:var(--muted)}
.small{font:14px/1.55 var(--font-ui)}
.tiny{font:12.5px/1.5 var(--font-ui);color:var(--muted)}
.prose{max-width:780px;font-size:18px;line-height:1.68}
.prose p{margin:0 0 14px}
.prose ul,.prose ol{padding-left:22px;margin:0 0 14px}
.prose li{margin:6px 0}
.prose h3{margin-top:26px}
.section{margin-top:30px}
.section-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.section-head h2{margin:0}
.rule{border:0;border-top:1px solid var(--line);margin:20px 0}

/* ===== Lưới & thẻ ===== */
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.split{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.9fr);gap:18px;align-items:start}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm);min-width:0}
.card.pad-lg{padding:28px}
.card.flat{box-shadow:none}
.card.tint-mint{background:var(--mint);border-color:transparent}
.card.tint-warm{background:var(--warm);border-color:transparent}
.card.tint-rose{background:var(--rose);border-color:transparent}
.card.tint-blue{background:var(--blue);border-color:transparent}
.card.tint-lilac{background:var(--lilac);border-color:transparent}
.card.tint-sun{background:var(--sun);border-color:transparent}
a.card,button.card{display:block;text-align:left;text-decoration:none;color:inherit;transition:transform .15s ease,border-color .15s ease,box-shadow .15s}
a.card:hover,button.card:hover{transform:translateY(-2px);border-color:var(--line-2);box-shadow:var(--shadow)}
.card-num{font:700 11.5px var(--font-ui);letter-spacing:1.2px;color:var(--brand);text-transform:uppercase}
.card .card-art{height:92px;margin:-4px 0 10px;color:var(--il-ink)}
.card .card-art svg{height:100%;width:auto}
.stack{display:grid;gap:12px;grid-template-columns:minmax(0,1fr)}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.row.nowrap{flex-wrap:nowrap}
.spacer{flex:1}
.between{display:flex;justify-content:space-between;gap:12px;align-items:center;flex-wrap:wrap}

/* ===== Nút ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 18px;border-radius:12px;background:var(--brand);color:var(--brand-ink);font:600 14.5px/1.2 var(--font-ui);text-decoration:none;border:1px solid transparent;white-space:nowrap;transition:filter .15s,background .15s}
.btn{max-width:100%}
.btn:hover{filter:brightness(.94)}
.btn.secondary{background:var(--surface);color:var(--ink);border-color:var(--line-2)}
.btn.secondary:hover{background:var(--surface-2);filter:none}
.btn.ghost{background:transparent;color:var(--brand-2)}
.btn.ghost:hover{background:var(--brand-soft);filter:none}
.btn.soft{background:var(--brand-soft);color:var(--brand-2)}
.btn.danger{background:var(--rose);color:var(--danger);border-color:color-mix(in srgb,var(--danger) 25%,transparent)}
.btn.sm{min-height:36px;padding:7px 12px;font-size:13px;border-radius:10px}
.btn.block{width:100%}
.btn .ico{width:18px;height:18px}
.actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.btn-icon{display:inline-grid;place-items:center;width:36px;height:36px;border-radius:10px;color:var(--ink-2);border:1px solid var(--line)}
.btn-icon:hover{background:var(--surface-2)}
.btn-icon.danger{color:var(--danger)}
.btn-icon .ico{width:17px;height:17px}

/* ===== Chip, tag, tab ===== */
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips.scroll{flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.chips.scroll::-webkit-scrollbar{display:none}
.chip{display:inline-flex;align-items:center;gap:6px;min-height:38px;padding:7px 14px;border-radius:99px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink-2);font:500 13.5px var(--font-ui);white-space:nowrap}
.chip:hover{background:var(--surface-2)}
.chip[aria-pressed="true"],.chip.on{background:var(--navy);border-color:var(--navy);color:var(--bg)}
.chip .n{font-size:11.5px;opacity:.75}
.tag{display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:99px;font:600 12px/1.5 var(--font-ui);background:var(--mint);color:var(--mint-ink);white-space:nowrap}
.tag.warm{background:var(--warm);color:var(--warm-ink)}
.tag.rose{background:var(--rose);color:var(--rose-ink)}
.tag.blue{background:var(--blue);color:var(--blue-ink)}
.tag.lilac{background:var(--lilac);color:var(--lilac-ink)}
.tag.sun{background:var(--sun);color:var(--sun-ink)}
.tag.line{background:transparent;border:1px solid var(--line-2);color:var(--ink-2)}
.tabs{display:flex;gap:4px;padding:4px;border-radius:14px;background:var(--surface-2);border:1px solid var(--line);overflow-x:auto;scrollbar-width:none;max-width:100%}
.tabs::-webkit-scrollbar{display:none}
.tab{flex:0 0 auto;min-height:40px;padding:8px 15px;border-radius:10px;font:600 13.5px var(--font-ui);color:var(--ink-2);white-space:nowrap}
.tab[aria-selected="true"]{background:var(--surface);color:var(--ink);box-shadow:var(--shadow-sm)}

/* ===== Biểu mẫu ===== */
.field{display:grid;gap:6px;min-width:0}
.field>label,.label{font:650 13px var(--font-ui);color:var(--ink-2)}
.field .hint{font:12.5px/1.45 var(--font-ui);color:var(--muted)}
.input,.field input:not([type=checkbox]):not([type=radio]):not([type=range]),.field select,.field textarea,select.input,textarea.input{width:100%;min-height:44px;padding:10px 12px;border-radius:11px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink);font:16px/1.45 var(--font-ui);outline:none;transition:border-color .15s,box-shadow .15s}
.field textarea,textarea.input{min-height:90px;resize:vertical;font-family:var(--font-ui)}
.input:focus,.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 22%,transparent)}
.form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.form .wide{grid-column:1/-1}
.check{display:flex;align-items:flex-start;gap:11px;padding:9px 0;cursor:pointer;line-height:1.45}
.check input{width:20px;height:20px;margin:2px 0 0;accent-color:var(--brand);flex:0 0 auto}
.check.done span{color:var(--muted);text-decoration:line-through;text-decoration-color:var(--line-2)}
input[type=range]{width:100%;accent-color:var(--brand)}
.search{position:relative}
.search .ico{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--muted)}
.search input{padding-left:40px!important}

/* ===== Thông báo, callout ===== */
.callout{display:grid;grid-template-columns:auto minmax(0,1fr);gap:4px 12px;padding:14px 16px;border-radius:14px;background:var(--surface-2);border-left:4px solid var(--line-2);margin:16px 0;font-size:16.5px;line-height:1.55}
.callout .ico{margin-top:2px}
.callout b.t{display:block;font:700 12.5px var(--font-ui);letter-spacing:.6px;text-transform:uppercase;margin-bottom:2px}
.callout p:last-child{margin:0}
.callout.tip{background:var(--mint);border-color:var(--ok);color:var(--ink)}
.callout.tip .ico,.callout.tip b.t{color:var(--ok)}
.callout.warn{background:var(--warm);border-color:var(--warn)}
.callout.warn .ico,.callout.warn b.t{color:var(--warn)}
.callout.danger{background:var(--rose);border-color:var(--danger)}
.callout.danger .ico,.callout.danger b.t{color:var(--danger)}
.callout.ev{background:var(--blue);border-color:var(--info)}
.callout.ev .ico,.callout.ev b.t{color:var(--info)}
.callout.exp{background:var(--sun);border-color:var(--sun-ink)}
.callout.exp .ico,.callout.exp b.t{color:var(--sun-ink)}
.callout.debate{background:var(--lilac);border-color:var(--lilac-ink)}
.callout.debate .ico,.callout.debate b.t{color:var(--lilac-ink)}
.legend{display:flex;flex-wrap:wrap;gap:8px;font:12.5px var(--font-ui)}

/* ===== Tiến độ ===== */
.bar{height:9px;border-radius:99px;background:var(--surface-3);overflow:hidden}
.bar>i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width .35s ease}
.ring{--p:0;width:88px;height:88px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--brand) calc(var(--p)*1%),var(--surface-3) 0);flex:0 0 auto}
.ring>span{width:70px;height:70px;border-radius:50%;background:var(--surface);display:grid;place-items:center;font:700 18px var(--font-ui)}
.kpis{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.kpi{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:16px 16px 14px;min-width:0}
.kpi b{display:block;font:700 28px/1.1 var(--font-ui);letter-spacing:-.5px}
.kpi span{font:12.5px/1.4 var(--font-ui);color:var(--muted)}
.kpi .ico{color:var(--brand);margin-bottom:6px}

/* ===== Danh sách & bảng ===== */
.list{display:grid;gap:10px;grid-template-columns:minmax(0,1fr)}
.item{display:flex;gap:14px;align-items:flex-start;padding:15px 16px;border:1px solid var(--line);border-radius:14px;background:var(--surface);min-width:0}
.item .grow{flex:1;min-width:0}
.item h3{font-size:19px;margin:0 0 3px}
.item .meta{display:flex;flex-wrap:wrap;gap:6px 12px;font:13px var(--font-ui);color:var(--muted);margin-top:4px}
.steps{display:grid;gap:10px;counter-reset:s;padding:0;margin:0 0 14px;list-style:none}
.steps>li{display:flex;gap:12px;align-items:flex-start;padding:12px 14px;border:1px solid var(--line);border-radius:13px;background:var(--surface)}
.steps>li::before{counter-increment:s;content:counter(s);flex:0 0 28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand-2);font:700 13px var(--font-ui)}
.steps>li b{display:block}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px;margin:12px 0 16px;background:var(--surface)}
table.t{width:100%;border-collapse:collapse;font:14.5px/1.5 var(--font-ui)}
table.t th,table.t td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
table.t th{background:var(--surface-2);font-weight:650;color:var(--ink-2);font-size:13px}
table.t tr:last-child td{border-bottom:0}
details.acc{border:1px solid var(--line);border-radius:14px;background:var(--surface);margin-bottom:10px}
details.acc>summary{cursor:pointer;list-style:none;padding:15px 44px 15px 16px;font-weight:700;font-size:18px;position:relative}
details.acc>summary::-webkit-details-marker{display:none}
details.acc>summary::after{content:"";position:absolute;right:18px;top:50%;width:9px;height:9px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:translateY(-70%) rotate(45deg);transition:transform .2s}
details.acc[open]>summary::after{transform:translateY(-30%) rotate(225deg)}
details.acc>.acc-body{padding:0 16px 16px}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:14px 0}
.compare>div{border-radius:14px;padding:14px 16px;font-size:16.5px}
.compare .weak{background:var(--rose)}
.compare .strong{background:var(--mint)}
.compare b.t{display:flex;gap:6px;align-items:center;font:700 12px var(--font-ui);letter-spacing:.6px;text-transform:uppercase;margin-bottom:6px}
.compare .weak b.t{color:var(--danger)}.compare .strong b.t{color:var(--ok)}
.compare-why{grid-column:1/-1;font:14px/1.55 var(--font-ui);color:var(--ink-2);padding:2px 4px}
.example{border:1px dashed var(--line-2);border-radius:14px;padding:14px 16px;margin:14px 0;background:var(--surface)}
.example b.t{display:block;font:700 12.5px var(--font-ui);letter-spacing:.6px;text-transform:uppercase;color:var(--brand);margin-bottom:6px}
.figure{margin:18px 0;padding:16px;border-radius:16px;background:var(--surface-2);border:1px solid var(--line);color:var(--il-ink)}
.figure svg{display:block;width:100%;height:auto;max-height:360px}
.figure figcaption{font:13px/1.5 var(--font-ui);color:var(--muted);margin-top:10px;text-align:center}

/* ===== Empty state ===== */
.empty{display:grid;justify-items:center;text-align:center;gap:8px;padding:30px 18px;border:1px dashed var(--line-2);border-radius:18px;background:var(--surface);color:var(--ink-2)}
.empty svg.art{width:150px;height:auto;color:var(--il-ink)}
.empty h3{margin:4px 0 0}
.empty p{max-width:460px;margin:0 auto 6px;color:var(--muted)}

/* ===== Hero trang chủ ===== */
.hero{position:relative;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:12px;align-items:center;padding:34px 36px;border-radius:26px;background:linear-gradient(118deg,var(--mint) 0%,var(--surface-2) 55%,var(--warm) 100%);border:1px solid var(--line);overflow:hidden}
.hero h1{font-size:clamp(34px,4.4vw,54px);line-height:1.04;letter-spacing:-1.2px;margin:12px 0 14px}
.hero p{font-size:19px;color:var(--ink-2);max-width:560px}
.hero .art{color:var(--il-ink)}
.hero .art svg{width:100%;height:auto;max-height:300px}
.today{display:grid;gap:8px;grid-template-columns:minmax(0,1fr)}
.task{display:flex;gap:12px;align-items:flex-start;padding:12px 14px;border-radius:13px;background:var(--surface);border:1px solid var(--line)}
.task input{width:22px;height:22px;accent-color:var(--brand);margin-top:2px;flex:0 0 auto}
.task .grow{flex:1;min-width:0}
.task.done .t{text-decoration:line-through;color:var(--muted)}
.task .t{font-weight:700;display:block}
.task .d{display:block;font:13.5px/1.45 var(--font-ui);color:var(--muted)}
.task a.go{font:600 13px var(--font-ui);text-decoration:none;white-space:nowrap}

/* ===== Giáo trình ===== */
.phase-card{display:grid;grid-template-columns:auto minmax(0,1fr);gap:16px;align-items:start}
.phase-no{width:52px;height:52px;border-radius:15px;display:grid;place-items:center;font:700 20px var(--font-ui);background:var(--brand-soft);color:var(--brand-2)}
.lesson-row{display:flex;gap:12px;align-items:center;padding:12px 14px;border-radius:12px;border:1px solid var(--line);background:var(--surface);text-decoration:none;color:inherit;min-height:56px}
.lesson-row:hover{border-color:var(--line-2);background:var(--surface-2)}
.lesson-row .st{width:26px;height:26px;border-radius:50%;border:2px solid var(--line-2);display:grid;place-items:center;flex:0 0 auto;color:var(--brand-ink)}
.lesson-row.done .st{background:var(--brand);border-color:var(--brand)}
.lesson-row .grow{flex:1;min-width:0}
.lesson-row .t{font-weight:700;font-size:17px;line-height:1.3}
.lesson-row .m{font:12.5px var(--font-ui);color:var(--muted)}
.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:28px;align-items:start}
.lesson-aside{position:sticky;top:calc(var(--top-h) + 16px);display:grid;gap:12px}
.toc a{display:block;padding:7px 10px;border-radius:9px;font:13.5px var(--font-ui);color:var(--ink-2);text-decoration:none}
.toc a:hover{background:var(--surface-2)}
.lesson-sec{scroll-margin-top:calc(var(--top-h) + 14px);margin-top:30px}
.goal-list{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.goal-list li{display:flex;gap:10px;align-items:flex-start}
.goal-list .ico{color:var(--brand);margin-top:3px}
.q-block{padding:16px 0;border-bottom:1px solid var(--line)}
.q-block:last-child{border-bottom:0}
.opt{display:flex;gap:10px;align-items:flex-start;width:100%;text-align:left;margin:7px 0;padding:11px 13px;border-radius:12px;border:1px solid var(--line-2);background:var(--surface);font:15.5px/1.45 var(--font-ui);cursor:pointer}
.opt:hover{background:var(--surface-2)}
.opt input{accent-color:var(--brand);margin-top:3px;width:18px;height:18px;flex:0 0 auto}
.opt.right{border-color:var(--ok);background:var(--mint)}
.opt.wrong{border-color:var(--danger);background:var(--rose)}
.why{font:14px/1.55 var(--font-ui);margin:6px 2px 0}
.why.ok{color:var(--ok)}.why.no{color:var(--danger)}
.lesson-nav{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:30px}
.lesson-nav a{display:block;padding:14px 16px;border:1px solid var(--line);border-radius:14px;text-decoration:none;color:inherit;background:var(--surface)}
.lesson-nav a:hover{border-color:var(--line-2)}
.lesson-nav small{display:block;font:12px var(--font-ui);color:var(--muted)}
.lesson-nav .next{text-align:right}

/* ===== CV Studio ===== */
.cv-wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.02fr);gap:20px;align-items:start}
.cv-editor{display:grid;gap:14px;min-width:0;grid-template-columns:minmax(0,1fr)}
.cv-preview-col{position:sticky;top:calc(var(--top-h) + 14px);min-width:0}
.cv-scale{background:var(--surface-3);border-radius:16px;padding:14px;overflow:hidden}
.cv-mobile-switch{display:none}
.sec-card{border:1px solid var(--line);border-radius:15px;background:var(--surface)}
.sec-card.is-hidden{opacity:.65;background:var(--surface-2)}
.sec-head{display:flex;align-items:center;gap:8px;padding:10px 12px 10px 14px;border-bottom:1px solid var(--line)}
.sec-head .t{font:700 15px var(--font-ui);flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sec-body{padding:14px;display:grid;gap:12px;grid-template-columns:minmax(0,1fr)}
.entry{border:1px solid var(--line);border-radius:12px;padding:12px;display:grid;gap:10px;background:var(--surface-2);grid-template-columns:minmax(0,1fr)}
.entry .between{gap:6px}
.lint{display:grid;gap:8px;grid-template-columns:minmax(0,1fr)}
.lint .it{display:flex;gap:10px;align-items:flex-start;padding:10px 12px;border-radius:11px;font:14px/1.5 var(--font-ui)}
.lint .it.err{background:var(--rose)}.lint .it.err .ico{color:var(--danger)}
.lint .it.warn{background:var(--warm)}.lint .it.warn .ico{color:var(--warn)}
.lint .it.tip{background:var(--blue)}.lint .it.tip .ico{color:var(--info)}
.lint .it.ok{background:var(--mint)}.lint .it.ok .ico{color:var(--ok)}
.verb-cloud{display:flex;flex-wrap:wrap;gap:6px}
.verb-cloud button{padding:5px 10px;border-radius:99px;border:1px solid var(--line-2);font:13px var(--font-ui);background:var(--surface)}
.verb-cloud button:hover{background:var(--brand-soft)}

/* Trang giấy CV: luôn nền trắng chữ đen để in */
.cv-paper{--cv-accent:#1f5f55;--cv-ink:#1b2224;--cv-muted:#4a5759;--cv-rule:#c9d3cf;background:#fff;color:var(--cv-ink);width:100%;aspect-ratio:auto;min-height:420px;padding:34px 36px;font:10.5pt/1.42 Arial,"Helvetica Neue",Helvetica,sans-serif;box-shadow:0 8px 24px rgba(20,40,38,.14);border-radius:4px;overflow-wrap:anywhere;color-scheme:light}
.cv-paper *{color:inherit}
.cv-paper .cv-name{font-size:21pt;line-height:1.1;font-weight:700;margin:0;letter-spacing:-.2px}
.cv-paper .cv-headline{font-size:11pt;margin-top:3px;color:var(--cv-muted)}
.cv-paper .cv-contact{font-size:9.2pt;color:var(--cv-muted);margin-top:6px}
.cv-paper .cv-contact span+span::before{content:" · ";color:#9aa6a3}
.cv-paper .cv-sec{margin-top:12px;break-inside:auto}
.cv-paper .cv-h{font-size:10pt;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:var(--cv-accent);border-bottom:1px solid var(--cv-rule);padding-bottom:3px;margin:0 0 6px}
.cv-paper .cv-entry{margin:0 0 7px;break-inside:avoid}
.cv-paper .cv-row{display:flex;justify-content:space-between;gap:10px;align-items:baseline}
.cv-paper .cv-row b{font-weight:700}
.cv-paper .cv-date{white-space:nowrap;color:var(--cv-muted);font-size:9.5pt}
.cv-paper .cv-org{color:var(--cv-muted);font-style:italic}
.cv-paper ul{margin:3px 0 0;padding-left:16px}
.cv-paper li{margin:1.5px 0}
.cv-paper .cv-lines div{margin:1.5px 0}
.cv-paper .cv-empty{margin-top:60px;padding:24px;text-align:center;border:1px dashed #c9d6d0;color:#6c7b77;font-size:10.5pt;border-radius:6px}
.cv-paper.tpl-classic{font-family:"Times New Roman",Times,serif;font-size:11pt}
.cv-paper.tpl-classic .cv-head{text-align:center}
.cv-paper.tpl-classic .cv-name{font-size:22pt;text-transform:uppercase;letter-spacing:1px}
.cv-paper.tpl-classic .cv-h{color:#1b2224;border-bottom:1px solid #1b2224;letter-spacing:1.4px}
.cv-paper.tpl-modern .cv-head{border-left:5px solid var(--cv-accent);padding-left:12px}
.cv-paper.tpl-modern .cv-name{color:var(--cv-accent)}
.cv-paper.tpl-modern .cv-h{border:0;background:#eef5f2;padding:4px 8px;border-radius:3px}
.cv-paper.tpl-compact{font-size:9.6pt;line-height:1.33;padding:26px 28px}
.cv-paper.tpl-compact .cv-name{font-size:18pt}
.cv-paper.tpl-compact .cv-sec{margin-top:8px}
.cv-paper.tpl-compact .cv-h{font-size:9.2pt;margin-bottom:4px}
.cv-paper.tpl-elegant{font-family:Georgia,"Times New Roman",serif}
.cv-paper.tpl-elegant .cv-head{text-align:center;border-bottom:2px solid var(--cv-accent);padding-bottom:10px}
.cv-paper.tpl-elegant .cv-name{font-weight:400;font-size:24pt;letter-spacing:.5px}
.cv-paper.tpl-elegant .cv-h{font-variant:small-caps;text-transform:none;letter-spacing:1.5px;font-size:12pt;font-weight:400;border-bottom:1px solid #d7ddd9}
.cv-paper.tpl-tech{font-family:"Segoe UI",Roboto,Arial,sans-serif}
.cv-paper.tpl-tech .cv-name{font-size:20pt}
.cv-paper.tpl-tech .cv-h{color:#22314a;border-bottom:2px solid #22314a;font-size:9.5pt}
.cv-paper.tpl-tech .cv-head{display:flex;flex-direction:column}

/* ===== Phỏng vấn ===== */
.qcard{display:block;width:100%;text-align:left;padding:14px 16px;border:1px solid var(--line);border-radius:14px;background:var(--surface);color:inherit}
.qcard:hover{border-color:var(--line-2);background:var(--surface-2)}
.qcard .q{font-weight:700;font-size:17.5px;line-height:1.35;margin:6px 0 4px}
.timer{font:700 40px/1 var(--font-ui);letter-spacing:-1px;font-variant-numeric:tabular-nums}
.timer.over{color:var(--warn)}
.rec-dot{width:12px;height:12px;border-radius:50%;background:var(--danger);display:inline-block;animation:pulse 1.2s infinite}
@keyframes pulse{50%{opacity:.3}}
.meter{display:grid;grid-template-columns:110px minmax(0,1fr) 46px;gap:10px;align-items:center;font:13.5px var(--font-ui);margin:7px 0}
.star-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}
.star-grid>div{padding:14px;border-radius:14px;background:var(--surface);border:1px solid var(--line)}
.star-grid b{display:block;font:800 26px var(--font-ui);color:var(--brand)}

/* ===== Modal & toast ===== */
.modal-back{position:fixed;inset:0;z-index:70;background:rgba(14,32,30,.5);display:grid;place-items:center;padding:14px;animation:fade .15s}
.modal{width:min(640px,100%);max-height:calc(100dvh - 28px);max-height:calc(100vh - 28px);overflow-y:auto;background:var(--bg);border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:var(--shadow);position:relative}
.modal.wide{width:min(860px,100%)}
.modal-head{display:flex;align-items:flex-start;gap:12px;margin-bottom:12px}
.modal-head h2{flex:1;margin:0}
.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(22px + var(--safe-b));z-index:90;background:var(--navy);color:var(--bg);padding:12px 18px;border-radius:13px;font:14px/1.45 var(--font-ui);box-shadow:var(--shadow);max-width:min(440px,calc(100vw - 32px));display:flex;gap:12px;align-items:center}
.toast button{color:inherit;font-weight:700;text-decoration:underline}
.loading{display:flex;gap:10px;align-items:center;justify-content:center;padding:40px;color:var(--muted);font:14px var(--font-ui)}
.spinner{width:22px;height:22px;border-radius:50%;border:3px solid var(--line-2);border-top-color:var(--brand);animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.offline-pill{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:99px;background:var(--warm);color:var(--warm-ink);font:600 12px var(--font-ui)}

/* ===== Biểu đồ thanh ngang đơn giản ===== */
.hbar{display:grid;grid-template-columns:minmax(90px,150px) minmax(0,1fr) 48px;gap:10px;align-items:center;font:13.5px var(--font-ui);margin:8px 0}
.hbar .track{height:12px;border-radius:99px;background:var(--surface-3);overflow:hidden}
.hbar .track i{display:block;height:100%;border-radius:99px;background:var(--brand)}
.funnel{display:grid;gap:6px}
.funnel>div{display:grid;grid-template-columns:120px minmax(0,1fr);gap:10px;align-items:center;font:13px var(--font-ui)}
.funnel .fb{height:26px;border-radius:7px;background:var(--brand-soft);display:flex;align-items:center;padding:0 9px;font-weight:700;color:var(--brand-2);min-width:34px}

/* ===== Responsive ===== */
@media (max-width:1180px){
  .g4,.kpis{grid-template-columns:repeat(2,minmax(0,1fr))}
  .lesson-layout{grid-template-columns:minmax(0,1fr)}
  .lesson-aside{position:static;order:-1}
  .lesson-aside .toc{display:none}
}
@media (max-width:1080px){
  .cv-wrap{grid-template-columns:minmax(0,1fr)}
  .cv-preview-col{position:static}
  .cv-mobile-switch{display:flex}
  .cv-wrap[data-mode="edit"] .cv-preview-col{display:none}
  .cv-wrap[data-mode="preview"] .cv-editor{display:none}
}
@media (max-width:980px){
  .app{display:block}
  .sidebar{display:none}
  .topbar .brand-mobile{display:inline-flex}
  .topbar .crumb{display:none}
  .tabbar{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));position:fixed;left:0;right:0;bottom:0;z-index:40;height:calc(var(--tab-h) + var(--safe-b));padding:0 4px var(--safe-b);background:color-mix(in srgb,var(--surface) 94%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-top:1px solid var(--line)}
  .tabbar a,.tabbar button{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font:600 11px var(--font-ui);color:var(--muted);text-decoration:none;min-height:48px;border-radius:12px}
  .tabbar [aria-current="page"]{color:var(--brand-2)}
  .tabbar [aria-current="page"] .ico{stroke-width:2.3}
  .tabbar .ico{width:23px;height:23px}
  body{padding-bottom:calc(var(--tab-h) + var(--safe-b))}
  .toast{bottom:calc(var(--tab-h) + 14px + var(--safe-b))}
  .split{grid-template-columns:minmax(0,1fr)}
  .g3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero{grid-template-columns:minmax(0,1fr);padding:28px}
  .hero .art{max-width:380px;justify-self:center;order:-1}
}
@media (max-width:640px){
  body{font-size:16.5px}
  .btn{white-space:normal;text-align:center}
  .content{padding-top:20px}
  .g2,.g3,.compare,.form{grid-template-columns:minmax(0,1fr)}
  .form .wide{grid-column:auto}
  .kpis{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .kpi{padding:13px}
  .kpi b{font-size:24px}
  .card{padding:17px;border-radius:16px}
  .card.pad-lg{padding:20px}
  .page-head{grid-template-columns:minmax(0,1fr)}
  .page-head .art{display:none}
  .hero{padding:22px 18px;border-radius:22px}
  .hero h1{font-size:34px}
  .hero p{font-size:17.5px}
  .lead{font-size:17px}
  .prose{font-size:17px}
  .star-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .lesson-nav{grid-template-columns:minmax(0,1fr)}
  .lesson-nav .next{text-align:left}
  .item{flex-direction:column;gap:10px}
  .item .actions{width:100%}
  .cv-paper{padding:22px 18px;font-size:9.6pt}
  .cv-paper .cv-name{font-size:17pt}
  .cv-paper .cv-row{flex-direction:column;gap:0}
  .meter{grid-template-columns:90px minmax(0,1fr) 40px}
  .hbar{grid-template-columns:minmax(70px,100px) minmax(0,1fr) 40px}
  .modal{padding:18px;border-radius:18px}
  .sheet-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .funnel>div{grid-template-columns:96px minmax(0,1fr)}
  .timer{font-size:34px}
}
@media (max-width:370px){
  .sheet-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .kpis{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

/* ===== In CV ===== */
@page{size:A4;margin:12mm 13mm}
@media print{
  :root{color-scheme:light}
  body{background:#fff!important;padding:0!important}
  body.printing-cv .app>*:not(.main),body.printing-cv .topbar,body.printing-cv .tabbar,body.printing-cv .footer,body.printing-cv .toast,body.printing-cv .no-print{display:none!important}
  body.printing-cv .content>*{display:none!important}
  body.printing-cv .content>#cvPage{display:block!important}
  body.printing-cv #cvPage>*{display:none!important}
  body.printing-cv #cvPage>.cv-wrap{display:block!important}
  body.printing-cv .cv-editor{display:none!important}
  body.printing-cv .cv-preview-col{display:block!important;position:static!important}
  body.printing-cv .cv-preview-col>*:not(.cv-scale){display:none!important}
  body.printing-cv .cv-scale{padding:0!important;background:none!important}
  body.printing-cv .app,body.printing-cv .main,body.printing-cv .content{display:block!important;padding:0!important;margin:0!important;max-width:none!important;min-height:0!important;height:auto!important}
  body.printing-cv #cvPage,body.printing-cv .cv-wrap,body.printing-cv .cv-preview-col,body.printing-cv .cv-scale{margin:0!important;padding:0!important}
  body.printing-cv #modal-root,body.printing-cv #sheet-root,body.printing-cv .skip{display:none!important}
  body.printing-cv .cv-paper{box-shadow:none!important;border-radius:0!important;padding:0!important;min-height:0!important;width:100%!important}
  .cv-paper .cv-entry{break-inside:avoid}
  .cv-paper .cv-h{break-after:avoid}
  body:not(.printing-cv) .sidebar,body:not(.printing-cv) .topbar,body:not(.printing-cv) .tabbar,body:not(.printing-cv) .footer{display:none!important}
  body:not(.printing-cv) .app{display:block}
}

/* ===== Hình minh họa SVG ===== */
.ill{display:block;width:100%;height:auto}
.ill text{font-family:var(--font-ui);fill:var(--il-ink)}
.ill text.inv{fill:var(--il-paper)}
.ill .s{fill:none;stroke:var(--il-line);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.ill .s.thin{stroke-width:1.4;opacity:.55}
.ill .s.thick{stroke-width:4}
.ill .s.dash{stroke-dasharray:5 6}
.ill .s.road{stroke-width:14;stroke:var(--il-paper);opacity:.95}
.ill .st{stroke:var(--il-line);stroke-width:2}
.ill .st.thick{stroke-width:8;stroke-linecap:round}
.ill .nofill{fill:none}
.ill .op{opacity:.8}
.ill .f-a{fill:var(--il-a)}.ill .f-b{fill:var(--il-b)}.ill .f-c{fill:var(--il-c)}.ill .f-d{fill:var(--il-d)}.ill .f-e{fill:var(--il-e)}.ill .f-f{fill:var(--il-f)}
.ill .f-p{fill:var(--il-paper)}.ill .f-s{fill:var(--il-soft)}.ill .f-i{fill:var(--il-ink)}.ill .f-l{fill:var(--il-line)}
.empty .art{width:170px;max-width:60%}
.page-head .art .ill{max-height:170px}