/* Tử Vi Thiên Lương — giao diện website thử nghiệm */
:root{
  --navy:#214574;
  --navy-deep:#122c4d;
  --ink:#1b2430;
  --muted:#5b6675;
  --paper:#ffffff;
  --ground:#edf1f6;
  --line:#c9d2de;
  --kim:#777b7f; --moc:#2d9b37; --thuy:#0b5f9a; --hoa:#c8322f; --tho:#c98a12;
  --serif:"Lora",Georgia,"Times New Roman",serif;
  --sans:"Be Vietnam Pro",Arial,Helvetica,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--ground);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.6}
a{color:var(--navy)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--tho);outline-offset:2px}
img{max-width:100%;height:auto}

/* Đầu trang */
.site-head{background:var(--navy-deep);color:#fff}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:12px;padding-bottom:12px}
.brand{color:#fff;text-decoration:none;font-family:var(--serif);font-weight:700;font-size:21px;letter-spacing:.2px;white-space:nowrap}
.brand small{display:block;font-family:var(--sans);font-weight:400;font-size:12px;color:#b9c8dc;letter-spacing:0}
.nav{display:flex;gap:4px;flex-wrap:wrap}
.nav a{color:#dfe7f1;text-decoration:none;padding:6px 10px;border-radius:4px;font-size:15px}
.nav a:hover{background:rgba(255,255,255,.08);color:#fff}
.nav a[aria-current="page"]{background:#fff;color:var(--navy-deep);font-weight:600}
.nav a.cta{border:1px solid #fff;color:#fff}
.nav-toggle{display:none}
@media(max-width:860px){
  .nav-toggle{display:block}
  .nav-toggle summary{list-style:none;cursor:pointer;color:#fff;border:1px solid rgba(255,255,255,.5);border-radius:4px;padding:5px 12px;font-size:15px}
  .nav-toggle summary::-webkit-details-marker{display:none}
  .nav-toggle[open] .nav{display:flex}
  .nav-desktop{display:none}
  .nav-toggle .nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--navy-deep);flex-direction:column;padding:8px 16px 16px;z-index:20}
  .site-head{position:relative}
  .nav-toggle .nav a{padding:10px 8px;font-size:17px}
}

.wrap{max-width:1120px;margin:0 auto;padding-left:16px;padding-right:16px}
main{padding:36px 0 56px}
.page-title{font-family:var(--serif);font-size:clamp(28px,4.5vw,40px);line-height:1.2;margin:0 0 8px;color:var(--navy-deep)}
.lede{color:var(--muted);max-width:62ch;margin:0 0 28px}
h2{font-family:var(--serif);color:var(--navy-deep);font-size:26px;line-height:1.25;margin:0 0 14px}
h3{font-size:19px;line-height:1.35;margin:0 0 6px}

/* ĐỊA BÀN — chữ ký thị giác của trang chủ */
.diaban{display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(4,minmax(92px,auto));border:2px solid var(--navy-deep);background:var(--paper);margin-bottom:44px}
.cung{border:1px solid var(--line);padding:10px 12px;position:relative;display:flex;flex-direction:column;justify-content:space-between;text-decoration:none;color:var(--ink);min-width:0}
.cung .chi{font-size:13px;font-weight:600}
.cung .ten,.cung .mo{display:block}
.cung .mo{margin-top:3px}
.cung .ten{font-family:var(--serif);font-size:19px;font-weight:700;color:var(--navy-deep);line-height:1.2}
.cung .mo{font-size:13.5px;color:var(--muted);line-height:1.35}
a.cung:hover{background:#f4f7fb}
a.cung:hover .ten{text-decoration:underline}
.chi.k{color:var(--kim)}.chi.m{color:var(--moc)}.chi.t{color:var(--thuy)}.chi.h{color:var(--hoa)}.chi.o{color:var(--tho)}
.trung{grid-column:2/4;grid-row:2/4;border:1px solid var(--line);background:var(--navy-deep);color:#fff;padding:28px 24px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center}
.trung h1{font-family:var(--serif);font-size:clamp(26px,4vw,44px);line-height:1.12;margin:0 0 8px}
.trung p{margin:0 0 20px;color:#c9d6e6;max-width:34ch}
.btn{display:inline-block;background:#fff;color:var(--navy-deep);font-weight:700;text-decoration:none;padding:12px 22px;border-radius:4px;border:0;font-size:17px;font-family:var(--sans);cursor:pointer}
.btn:hover{background:#e6edf6}
.btn.dark{background:var(--navy);color:#fff}
.btn.dark:hover{background:var(--navy-deep)}
.trung .phu{margin-top:14px;font-size:14px;color:#9fb3cc}

@media(max-width:700px){
  .diaban{grid-template-rows:repeat(4,minmax(74px,auto))}
  .cung{padding:6px 6px}
  .cung .ten{font-size:14.5px}
  .cung .mo{display:none}
  .cung .chi{font-size:11px}
  .trung{padding:16px 10px}
  .trung p{font-size:14px;margin-bottom:14px}
  .btn{padding:10px 14px;font-size:15px}
  .trung .phu{display:none}
}

/* Khối nội dung */
.section{margin-bottom:48px}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;border-bottom:2px solid var(--navy-deep);padding-bottom:8px;margin-bottom:18px}
.section-head h2{margin:0}
.section-head a{font-size:15px;white-space:nowrap}
.list{list-style:none;margin:0;padding:0}
.list li{background:var(--paper);border-left:4px solid var(--navy);padding:16px 18px;margin-bottom:10px}
.list li p{margin:4px 0 0;color:var(--muted);font-size:15.5px}
.list li a{text-decoration:none;color:var(--navy-deep)}
.list li a:hover{text-decoration:underline}
.meta{font-size:13.5px;color:var(--muted)}
.cols{display:grid;grid-template-columns:1fr 1fr;gap:28px}
@media(max-width:760px){.cols{grid-template-columns:1fr}}

.panel{background:var(--paper);padding:22px;border:1px solid var(--line)}
.note{background:#fff8e6;border-left:4px solid var(--tho);padding:12px 16px;font-size:15px;margin:16px 0}

/* Sách */
.book{display:grid;grid-template-columns:160px 1fr;gap:24px;background:var(--paper);padding:22px;border:1px solid var(--line);margin-bottom:18px}
.book-cover{aspect-ratio:3/4;background:var(--navy-deep);color:#fff;display:flex;align-items:center;justify-content:center;text-align:center;padding:12px;font-family:var(--serif);font-weight:700;font-size:18px;line-height:1.25;border:6px double #c9a24a}
@media(max-width:560px){.book{grid-template-columns:1fr}.book-cover{max-width:180px}}

/* Form */
form .field{margin-bottom:14px}
label{display:block;font-weight:600;font-size:15px;margin-bottom:4px}
input,select,textarea{width:100%;font:inherit;font-size:16px;padding:10px 12px;border:1px solid #9fabbb;border-radius:4px;background:#fff;color:var(--ink)}
textarea{min-height:140px;resize:vertical}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:560px){.row2{grid-template-columns:1fr}}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;font-weight:400}
.consent input{width:auto;margin-top:4px}
.hidden{display:none}

/* Bài viết */
.article{background:var(--paper);padding:clamp(20px,4vw,44px);border:1px solid var(--line);max-width:780px}
.article p,.article li{font-family:var(--serif);font-size:18px;line-height:1.75;max-width:68ch}
.article h2{margin-top:28px}

/* Video */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
.embed{position:relative;aspect-ratio:16/9;background:#000}
.embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.placeholder{aspect-ratio:16/9;background:#dde4ee;display:flex;align-items:center;justify-content:center;text-align:center;padding:16px;color:var(--muted);font-size:15px;border:1px dashed #9fabbb}

/* Chân trang */
.site-foot{background:var(--navy-deep);color:#b9c8dc;font-size:14.5px;padding:28px 0}
.site-foot a{color:#fff}
.site-foot .wrap{display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between}

@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}