/* WEB-01: khung site công khai. Token theo docs/sketches/web (đã duyệt). */
:root{--paper:#F5ECD7;--ink:#3B2A20;--red:#A8432F;--side:#EADBBE;--cream:#FFF3D6;--card:#FBF6EC;--muted:#6b5a4c;--serif:"Noto Serif",Cambria,Georgia,"Times New Roman",serif;--rule:rgba(59,42,32,.15);--side-w:200px}
@media (max-width:600px){:root{--side-w:76px}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.75 system-ui,"Segoe UI",sans-serif;overflow-x:hidden}
a{color:var(--red)}
a:focus-visible,button:focus-visible{outline:3px solid var(--red);outline-offset:-3px}
.side{position:fixed;inset:0 auto 0 0;width:var(--side-w);background:var(--side);border-right:2px solid var(--ink);display:flex;flex-direction:column;overflow-y:auto;z-index:2}
.brand{display:block;padding:12px 8px;min-height:64px;color:var(--ink);font-weight:700;font-size:14px;line-height:1.25;text-decoration:none;border-bottom:1px solid var(--ink)}
.brand span{display:block;font-weight:400}
.side nav{display:flex;flex-direction:column}
.side nav a{display:flex;align-items:center;min-height:52px;padding:6px 8px 6px 12px;border-left:5px solid transparent;color:var(--ink);font-size:14px;line-height:1.2;text-decoration:none}
@media (min-width:601px){.side nav a{min-height:48px;font-size:16px;padding-left:16px}.brand{font-size:18px;padding:16px}}
.side nav a:hover{background:#F6EAD0}
.side nav a[aria-current="page"]{background:var(--cream);border-left-color:var(--red);color:var(--red);font-weight:700}
.side a:focus-visible{outline:3px solid var(--red);outline-offset:-3px}
.wrap{margin-left:var(--side-w);padding:20px 14px 24px;min-width:0}
@media (min-width:601px){.wrap{padding:32px 40px;max-width:calc(var(--side-w) + 820px)}}
main{min-width:0}
h1,h2,h3,.brand{font-family:var(--serif);font-weight:600}
h1{font-size:clamp(30px,6vw,48px);line-height:1.2;margin:0 0 16px}
h2{font-size:22px;line-height:1.3;margin:28px 0 8px}
h3{font-size:17px;line-height:1.3;margin:20px 0 6px}
main p,main li,main h1,main h2,main h3{max-width:68ch}
.hero{display:block;width:100%;max-width:520px;height:auto;border:1px solid var(--ink);border-radius:8px;background:var(--card);margin:0 0 16px}
.btn-vao{display:flex;align-items:center;justify-content:center;min-height:60px;margin:20px 0;padding:0 16px;background:var(--red);color:#fff;border-radius:10px;font-size:18px;font-weight:700;text-decoration:none;text-align:center}
.btn-vao:focus-visible{outline:3px solid var(--ink);outline-offset:3px}
@media (min-width:601px){.btn-vao{display:inline-flex;min-width:280px}}
.lois{display:grid;gap:10px;padding:0;margin:0;list-style:none}
.lois a{display:block;min-height:50px;padding:10px 14px;background:var(--card);border:1px solid var(--ink);border-radius:10px;color:var(--ink);text-decoration:none}
.lois b{display:block}.lois small{display:block;color:var(--muted);font-size:13px}
.lois a:focus-visible{outline:3px solid var(--red);outline-offset:2px}
.nhap{border:1.5px dashed var(--red);border-radius:8px;padding:8px 12px;background:var(--cream);font-size:14px}
.cho{border:1.5px dashed var(--muted);border-radius:10px;padding:16px;background:#F3EAD6;color:var(--muted)}
footer{margin-top:32px;padding-top:12px;border-top:1px solid var(--ink);font-size:14px}
footer a{display:inline-block;padding:10px 4px}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

/* WEB-DSN-02: schedule and content list rhythm; shell geometry unchanged. */
.lich{list-style:none;padding:0;margin:0 0 8px}
.lich li{padding:8px 0;border-bottom:1px solid var(--rule)}
.lich time{display:inline-block;min-width:3.6em;font-weight:700;font-variant-numeric:tabular-nums}
.lich small{color:var(--muted)}
.su-kien{padding:12px 0;border-top:1px solid var(--rule)}
main>article+article,.danh-gia+.danh-gia{border-top:1px solid var(--rule);padding-top:16px;margin-top:16px}
main>article h2{margin:0 0 4px}
main article time{font-size:14px;color:var(--muted)}
.danh-gia p{margin:4px 0}