/* Bố cục: thanh trên (tên + đổi tiếng) · trang chủ = câu giới thiệu + hàng 6 trạm + khung nội dung trạm đang chọn (3 nhóm) · trang #courses = lưới thẻ khoá học */
:root{
  --bg:#f5f6f8; --paper:#ffffff; --ink:#1b2333; --muted:#5d6779; --line:#dde2ea; --soft:#eef2f7;
  --ai:#1f3a5f; --ai-ink:#ffffff; --ai-soft:#e6edf6;
  --kin:#9c7a2b;
  --live:#2f7a4f; --part:#93701c; --soon:#7b8494;
  --f-display:"Zen Old Mincho","Hiragino Mincho ProN","Yu Mincho",serif;
  --f-body:"Noto Sans JP","Hiragino Sans","Yu Gothic",system-ui,sans-serif;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0f131a; --paper:#161c26; --ink:#e6eaf1; --muted:#a2abbb; --line:#2a3342; --soft:#1c2430;
  --ai:#9bb6db; --ai-ink:#0f131a; --ai-soft:#1e2938; --kin:#d1b062; --live:#6cc18f; --part:#d8b55c; --soon:#8d96a6; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0f131a; --paper:#161c26; --ink:#e6eaf1; --muted:#a2abbb; --line:#2a3342; --soft:#1c2430;
  --ai:#9bb6db; --ai-ink:#0f131a; --ai-soft:#1e2938; --kin:#d1b062; --live:#6cc18f; --part:#d8b55c; --soon:#8d96a6; color-scheme:dark}
/* tiếng Việt: font có dấu (Zen Old Mincho không có dấu tiếng Việt) */
html[lang="vi"]{--f-display:"Noto Sans JP","Hiragino Sans",system-ui,sans-serif}

*{box-sizing:border-box}
body{background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.65;margin:0}
a{color:var(--ai)}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--kin);outline-offset:2px}
.wrap{max-width:1080px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
h1,h2,h3{margin:0;text-wrap:balance}
p{margin:0}

/* thanh trên */
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--paper)}
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:5;background:var(--paper);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:12px;padding-block:12px}
.brand{font-family:var(--f-display);font-weight:700;font-size:19px;color:var(--ai);letter-spacing:.02em;text-decoration:none;white-space:nowrap}
.hl{margin-left:auto;display:flex;gap:12px;align-items:center}
.hl a{font-size:14px;font-weight:700}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.seg button{background:none;border:0;padding:5px 10px;font-size:13px;cursor:pointer;color:var(--muted)}
.seg button[aria-pressed="true"]{background:var(--ai);color:var(--ai-ink);font-weight:700}

main{padding-block:26px 40px}
.view{display:grid}

/* câu giới thiệu */
.hero h1{font-family:var(--f-display);font-weight:700;font-size:clamp(22px,4.4vw,32px);color:var(--ai);line-height:1.35}
.hero p{margin-top:6px;color:var(--muted)}
.hint{margin:22px 0 8px;font-size:14px;color:var(--kin);font-weight:700}

/* hàng chọn vai (chỉ lọc mục Quản lý / Thủ tục) */
.roles{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-top:16px}
.roles .lb{font-size:13px;font-weight:700;color:var(--muted);margin-right:2px}
.roles button{border:1px solid var(--line);background:var(--paper);color:inherit;border-radius:999px;padding:5px 12px;font:inherit;font-size:13px;cursor:pointer}
.roles button:hover{border-color:var(--ai)}
.roles button[aria-pressed="true"]{background:var(--ai);border-color:var(--ai);color:var(--ai-ink);font-weight:700}

/* 7 trạm: máy tính = 6 mũi tên + trạm kỹ sư tách riêng; điện thoại = lưới 3+3+1 */
.stations{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:4px}
.st{display:grid;align-content:center;justify-items:center;gap:1px;min-height:76px;padding:10px 12px 10px 24px;
  background:var(--paper);border:0;cursor:pointer;text-align:center;
  clip-path:polygon(0 0,calc(100% - 14px) 0,100% 50%,calc(100% - 14px) 100%,0 100%,14px 50%)}
.st:first-child{padding-left:12px;clip-path:polygon(0 0,calc(100% - 14px) 0,100% 50%,calc(100% - 14px) 100%,0 100%)}
.st:nth-child(6){padding-right:12px;clip-path:polygon(0 0,100% 0,100% 100%,0 100%,14px 50%)}
.st.sep{margin-left:14px;padding:10px 8px;clip-path:none;border:2px dashed var(--line);border-radius:10px}
.st.sep .t{font-size:13px}
.st:hover{background:var(--ai-soft)}
.st .n{font-size:12px;font-weight:800;color:var(--kin)}
.st .t{font-size:15px;font-weight:800;line-height:1.25}
.st .s{font-size:11.5px;color:var(--muted);line-height:1.3}
.st.on{background:var(--ai)}
.st.on .n,.st.on .t,.st.on .s{color:var(--ai-ink)}
.note{margin-top:8px;font-size:12.5px;color:var(--muted)}

/* khung nội dung trạm */
.panel{margin-top:14px;background:var(--paper);border:2px solid var(--ai);border-radius:12px;padding:18px}
.panel h2{font-size:21px;color:var(--ai);display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.panel h2 .pn{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--ai);color:var(--ai-ink);font-size:15px;align-self:center}
.panel h2 small{font-size:14px;color:var(--muted);font-weight:400}
.panel .lead{margin:4px 0 14px;color:var(--muted);font-size:14.5px}
.groups{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.g{border:1px solid var(--line);border-radius:10px;padding:12px 14px;min-width:0}
.g h3{font-size:16px;display:flex;gap:6px;align-items:center;padding-bottom:6px}
.it{display:flex;align-items:center;gap:10px;padding:10px 0;border-top:1px solid var(--line)}
.it .nm{flex:1;min-width:0;font-weight:700;font-size:15px;line-height:1.35}
.it .nm small{display:block;font-weight:400;color:var(--muted);font-size:12.5px;margin-top:2px}
.wip{font-size:13px;color:var(--muted);padding-top:9px;border-top:1px dashed var(--line)}
.wip b{display:inline-block;font-size:11.5px;font-weight:700;color:var(--soon);background:var(--soft);border-radius:4px;padding:0 6px;margin-right:6px}
.law{font-size:12.5px;color:var(--muted);padding-top:8px}
.common{margin-top:14px;font-size:13.5px;color:var(--muted)}
.common b{color:var(--soon);font-size:12px}
.more{display:block;margin-top:22px;text-align:center;font-weight:700}

/* nút */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:6px 14px;border:1px solid var(--ai);color:var(--ai);background:none;border-radius:8px;font-size:14px;font-weight:700;text-decoration:none;cursor:pointer;white-space:nowrap}
.btn.fill{background:var(--ai);color:var(--ai-ink)}

/* trang khoá học */
.back{font-size:14px;font-weight:700;margin-bottom:14px;width:fit-content}
.cgroup{margin-top:26px;display:grid;gap:10px}
.cgroup h2{font-family:var(--f-display);font-size:20px;color:var(--ai)}
.cgroup > .wip{border:0;padding-top:0}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:12px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:10px;display:grid;gap:8px;padding:14px 16px;min-width:0;align-content:start}
.card .hd{display:flex;gap:8px;align-items:flex-start;justify-content:space-between}
.card h3{font-size:16px}
.pill{font-size:11.5px;font-weight:700;padding:1px 9px;border-radius:999px;white-space:nowrap;border:1px solid currentColor}
.pill.live{color:var(--live)} .pill.partial{color:var(--part)} .pill.soon{color:var(--soon);border-style:dashed}
.meta{display:flex;flex-wrap:wrap;gap:4px 8px;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.vbar{display:flex;gap:6px;flex-wrap:wrap}
.vbar span{font-size:12px;padding:1px 7px;background:var(--soft);border-radius:4px;font-variant-numeric:tabular-nums}
.vbar span.zero{color:var(--soon)}
.card .ft{display:flex;gap:8px;flex-wrap:wrap;padding-top:4px}
.secs{border-top:1px solid var(--line);max-height:420px;overflow:auto;margin:4px -16px -14px}
.sec{display:grid;grid-template-columns:40px minmax(0,1fr) auto;gap:8px;align-items:center;padding:7px 16px;border-bottom:1px solid var(--line);font-size:13px}
.sec .no{color:var(--muted);font-variant-numeric:tabular-nums}
.sec .t{min-width:0}
.sec .t small{display:block;color:var(--muted);font-size:11.5px}
.sec .v{display:flex;gap:4px}
.sec .v a,.sec .v span{font-size:11px;padding:1px 6px;border-radius:4px;text-decoration:none;border:1px solid var(--line)}
.sec .v a{color:var(--ai);border-color:var(--ai)}
.sec .v span{color:var(--soon);border-style:dashed}

footer{border-top:1px solid var(--line);padding-block:18px;color:var(--muted);font-size:12.5px}

@media (max-width:860px){ .groups{grid-template-columns:1fr} }
@media (max-width:720px){
  .hl a{display:none}
  .stations{grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}
  .st,.st:first-child,.st:nth-child(6){clip-path:none;border:1px solid var(--line);border-radius:10px;padding:10px 4px;min-height:0}
  .st.on{border-color:var(--ai)}
  .st.sep{grid-column:1/-1;margin:6px 0 0;border:2px dashed var(--line)}
  .st.sep.on{border-color:var(--ai)}
  .st .t{font-size:14px}
  .panel{padding:14px}
  .sec{grid-template-columns:34px minmax(0,1fr);padding-inline:12px}
  .sec .v{grid-column:2}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto}}