/* ==========================================================================
   Bảng định kiểu duy nhất của giao diện. Không phụ thuộc thư viện ngoài.
   ========================================================================== */
:root{
  --bg:#f4f6fb; --card:#fff; --card2:#fafbfe;
  --ink:#141728; --ink2:#4b5069; --ink3:#8990a8;
  --line:#e6e9f2; --brand:#ff5a3c; --brand2:#7c5cff;
  --dark:#12122a; --dark2:#171634;
  --fs:17px; --r:18px; --pad:28px; --maxw:1200px;
  --grad:linear-gradient(92deg,var(--brand),#ff9538);
  --grad2:linear-gradient(92deg,var(--brand2),#5b7cff);
}
[data-theme="dark"]{
  --bg:#0d0f1c; --card:#161a2c; --card2:#1b2038;
  --ink:#eef0fa; --ink2:#b3b9d4; --ink3:#7b83a4; --line:#272c46;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:'Be Vietnam Pro',system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:var(--fs);line-height:1.65;-webkit-font-smoothing:antialiased;text-wrap:pretty;overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand2)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
::selection{background:var(--brand);color:#fff}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.screen-reader-text{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(1px,1px,1px,1px);white-space:nowrap}
.skip-link{position:absolute;left:-9999px;top:0;z-index:100;padding:10px 16px;background:var(--dark);color:#fff;border-radius:0 0 10px 0}
.skip-link:focus{left:0;color:#fff}

/* ---------- Bố cục ---------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--pad)}
.section{padding:22px 0}
.grid-main{display:grid;grid-template-columns:1.55fr .95fr;gap:22px;align-items:start}
.grid-blog{display:grid;grid-template-columns:1.6fr .9fr;gap:24px;align-items:start}
.stack{display:flex;flex-direction:column;gap:16px}
.stack-tight{gap:12px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.card-sm{padding:20px}
.sec-title{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;text-transform:uppercase;letter-spacing:.2px;line-height:1.3}
.sec-title svg{flex:none}
.sec-title-sm{font-size:17px;text-transform:none;letter-spacing:0;margin-bottom:12px}
.sec-sub{margin:6px 0 16px;color:var(--ink3);font-size:15px}
.muted,.meta{color:var(--ink3);font-size:14px}
.center{display:flex;justify-content:center;margin-top:16px}
.empty{padding:40px;text-align:center;color:var(--ink3)}

/* ---------- Đầu trang ---------- */
.site-header{position:sticky;top:0;z-index:40;background:var(--dark);color:#fff;border-bottom:1px solid rgba(255,255,255,.08)}
.site-header .container{display:flex;align-items:center;gap:22px;padding-top:12px;padding-bottom:12px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;min-width:0}
.brand:hover{color:#fff}
.brand-mark{width:38px;height:38px;flex:none;border-radius:11px;background:linear-gradient(140deg,var(--brand),#ff9c3c);display:grid;place-items:center}
.brand-text{display:flex;flex-direction:column;line-height:1.12;min-width:0}
.brand-text b{font-size:19px;font-weight:800;letter-spacing:.2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-text b span{color:var(--brand)}
.brand-text small{font-size:11px;color:#9aa1c4;letter-spacing:1.2px;text-transform:uppercase;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:220px}
.nav{margin-left:auto;min-width:0}
.nav-list{display:flex;gap:2px;flex-wrap:wrap;list-style:none;margin:0;padding:0}
.nav-list a{display:block;color:#d5d8ea;font-size:15px;padding:8px 11px;border-radius:9px;white-space:nowrap}
.nav-list a:hover{background:rgba(255,255,255,.1);color:#fff}
.nav-list .current-menu-item>a,.nav-list .current_page_item>a{background:rgba(255,255,255,.14);color:#fff}
.nav-list li{position:relative}
.nav-list .sub-menu{position:absolute;left:0;top:100%;min-width:200px;list-style:none;margin:0;padding:6px;
  background:var(--dark2);border:1px solid rgba(255,255,255,.12);border-radius:12px;box-shadow:0 12px 28px rgba(0,0,0,.35);
  opacity:0;visibility:hidden;transition:opacity .14s ease}
.nav-list li:hover>.sub-menu,.nav-list li:focus-within>.sub-menu{opacity:1;visibility:visible}
.nav-list .sub-menu a{white-space:normal}
.icon-btn{width:42px;height:42px;flex:none;border-radius:12px;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);color:#fff;display:grid;place-items:center;cursor:pointer}
.icon-btn:hover{background:rgba(255,255,255,.16)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;color:#fff;background-color:#100f24;
  background-image:radial-gradient(1100px 520px at 20% -12%,rgba(59,42,109,.42) 0,transparent 60%),
             radial-gradient(900px 480px at 88% 0,rgba(122,42,77,.38) 0,transparent 58%),
             linear-gradient(180deg,rgba(16,15,36,.30) 0,rgba(16,15,36,.55) 45%,rgba(16,15,36,.82) 100%),
             url("../img/hero-lien-quan-ngang.webp");
  background-repeat:no-repeat;
  background-size:auto,auto,auto,cover;
  background-position:center,center,center,center 42%}
.hero .container{position:relative;padding-top:44px;padding-bottom:52px}
.hero h1{text-align:center;font-size:44px;line-height:1.16;font-weight:800;letter-spacing:-.5px;text-transform:uppercase;text-shadow:0 2px 18px rgba(8,7,20,.85),0 1px 3px rgba(8,7,20,.7)}
.hero .lead{margin:14px auto 0;max-width:660px;text-align:center;color:#dfe3f5;text-shadow:0 1px 10px rgba(8,7,20,.8)}

/* ---------- Công cụ tạo tên ---------- */
.gen{margin-top:28px;display:grid;grid-template-columns:1.05fr .95fr;gap:22px;padding:22px;border-radius:20px;
  background:rgba(18,17,42,.72);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.12)}
.gen-inline{margin:22px 0;background:linear-gradient(160deg,#1d1b3a,var(--dark));border-color:rgba(255,255,255,.1)}
.gen-col{display:flex;flex-direction:column;gap:16px;min-width:0}
.lbl{display:block;font-size:14px;color:#a9aecd;margin-bottom:8px}
.lbl-sm{font-size:13px;margin-bottom:6px}
.lbl-tight{margin:2px 0 0}
.row{display:flex;gap:8px}
.dark-input,.dark-select{width:100%;padding:14px 16px;border-radius:12px;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);color:#fff;outline:none}
.dark-input::placeholder{color:#8a90b4}
.dark-select{padding:12px;border-radius:11px;background:#20203f;cursor:pointer}
.dark-select option{background:#20203f;color:#fff}
.mini-btn{width:52px;flex:none;border-radius:12px;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);color:#fff;display:grid;place-items:center;cursor:pointer}
.mini-btn:hover{background:rgba(255,255,255,.18)}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.grid4:has(>.font-btn){display:flex;flex-wrap:wrap}
.font-btn{flex:0 1 auto;max-width:100%;padding:13px 14px;border-radius:11px;cursor:pointer;font-size:15px;white-space:nowrap;
  border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.05);color:#fff}
.font-btn.is-active{border-color:var(--brand);background:rgba(255,90,60,.18)}
.preview{border-radius:14px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.05);padding:22px 16px;text-align:center;
  font-size:28px;line-height:1.4;word-break:break-word;display:flex;align-items:center;justify-content:center;color:#fff}
.gen-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:15px;border-radius:12px;border:none;cursor:pointer;font-weight:700;color:#fff;text-align:center}
.btn:hover{filter:brightness(1.08);color:#fff}
.btn[disabled]{opacity:.6;cursor:progress}
.btn-primary{background:var(--grad)}
.btn-violet{background:var(--grad2)}
.btn-sm{padding:11px 20px;border-radius:11px}
/* Gợi ý nhanh cũng là TÊN kết quả: trong .stack dọc chúng bị kéo giãn full width,
   nên cho khối này xuống hàng ngang và để mỗi ô rộng đúng bằng cái tên nó chứa. */
.stack:has(>.sugg){flex-direction:row;flex-wrap:wrap;gap:9px}
.sugg{flex:0 1 auto;max-width:100%;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 14px;border-radius:11px;
  border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.04);color:#fff;cursor:pointer;text-align:left;font-size:16px;overflow-wrap:anywhere}
.sugg:hover{background:rgba(255,255,255,.12)}
.sugg svg{flex:none;opacity:.7}

/* ---------- Kết quả tạo tên ---------- */
.gen-out{padding-bottom:4px}
.res-block{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px;margin-top:16px}
.res-block h2{font-size:18px;font-weight:800;margin-bottom:4px}
.res-block .cnt{color:var(--ink3);font-size:14px;margin-bottom:14px;display:block}
.res-grid{display:flex;flex-wrap:wrap;gap:10px}
.res-item{flex:0 1 auto;max-width:100%;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 14px;border-radius:12px;
  border:1px solid var(--line);background:var(--card2);cursor:pointer;text-align:left;font-size:17px;overflow-wrap:anywhere}
.res-item:hover{border-color:var(--brand)}
.res-item span{min-width:0;line-height:1.5;overflow-wrap:anywhere}
.res-item svg{flex:none;color:var(--ink3)}
.nick-item{flex:0 1 auto;max-width:100%;display:flex;align-items:stretch;gap:0;border:1px solid var(--line);border-radius:12px;background:var(--card2);overflow:hidden}
.nick-item:hover{border-color:var(--brand)}
.nick-item .res-item{border:none;background:transparent;border-radius:0;flex:1}
.nick-item .res-item:hover{border:none}
.nick-like{flex:none;padding:0 14px;border:none;border-left:1px solid var(--line);background:transparent;color:var(--ink3);
  font-size:14px;font-weight:600;cursor:pointer;white-space:nowrap}
.nick-like:hover,.nick-like.is-on{color:var(--brand)}
.gen-give{display:flex;gap:8px;margin-top:16px}
.gen-give input{flex:1;min-width:0;padding:12px 14px;border-radius:11px;border:1px solid var(--line);background:var(--card2);outline:none}
.res-loading{padding:24px;text-align:center;color:var(--ink3)}

/* ---------- Chip / tab ---------- */
.chips{display:flex;flex-wrap:wrap;gap:9px}
.chips-tight{gap:7px}
.chip{display:inline-flex;align-items:center;gap:8px;white-space:nowrap;padding:10px 17px;border-radius:999px;cursor:pointer;font-size:15px;font-weight:600;
  border:1px solid var(--line);background:var(--card2);color:var(--ink2)}
.chip:hover{border-color:var(--brand)}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff}
.tab{display:inline-block;white-space:nowrap;padding:8px 15px;border-radius:999px;font-size:14px;font-weight:600;cursor:pointer;
  border:1px solid var(--line);background:var(--card2);color:var(--ink2)}
.tab:hover{border-color:var(--brand);color:var(--brand)}
.tab.is-active{background:var(--brand);border-color:var(--brand);color:#fff}
.ghost-btn{padding:11px 22px;border-radius:10px;border:1px solid var(--line);background:var(--card2);color:var(--ink2);font-size:15px;font-weight:600;cursor:pointer}
.ghost-btn:hover{border-color:var(--brand);color:var(--brand)}
.tag{display:inline-block;padding:7px 13px;border-radius:999px;border:1px solid var(--line);background:var(--card2);color:var(--ink2);font-size:14px}
.tag:hover{border-color:var(--brand);color:var(--brand)}
.pill{padding:3px 10px;border-radius:999px;background:var(--card2);border:1px solid var(--line);font-size:13px;font-weight:600;color:var(--brand2)}
.pill-solid{padding:4px 12px;border-radius:999px;background:var(--brand);color:#fff;font-size:13px;font-weight:700}
.pill-solid:hover{color:#fff}

.chips-bar{padding-top:24px}

/* ---------- Bảng ---------- */
.table-wrap{overflow-x:auto}
.table{width:100%;border-collapse:collapse;font-size:16px}
.table th{text-align:left;padding:10px 8px;font-weight:600;color:var(--ink3);font-size:14px;white-space:nowrap}
.table td{padding:11px 8px;vertical-align:middle}
.table tbody tr{border-top:1px solid var(--line)}
.table tbody tr:hover{background:var(--card2)}
.table .c-rank{width:52px}
.table .c-num{width:110px}
.table .c-act{width:170px;text-align:right}
.rank{font-weight:700;color:var(--ink3);font-variant-numeric:tabular-nums}
.rank.top{color:var(--brand)}
.nm{font-size:17px;word-break:break-word}
.num{font-variant-numeric:tabular-nums;color:var(--ink2)}
.acts{display:flex;gap:7px;justify-content:flex-end}
.up{color:#17a673;font-weight:600;font-size:14px}
.down{color:#e0603a;font-weight:600;font-size:14px}
.flat{color:var(--ink3);font-size:14px}
.table .c-trend{width:110px}
.mini{width:36px;height:36px;flex:none;border-radius:9px;border:1px solid var(--line);background:var(--card2);color:var(--ink3);display:grid;place-items:center;cursor:pointer}
.mini:hover{border-color:var(--brand);color:var(--brand)}
.mini-text{display:inline-block;padding:8px 12px;border-radius:9px;border:1px solid var(--line);background:var(--card2);color:var(--ink2);font-size:14px;font-weight:600;cursor:pointer;white-space:nowrap}
.mini-text:hover{border-color:var(--brand);color:var(--brand)}

/* ---------- Lưới sao chép ---------- */
.tools{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:16px}
.search{display:flex;align-items:center;gap:8px;padding:10px 14px;border-radius:11px;border:1px solid var(--line);background:var(--card2);flex:1;min-width:220px}
.search input{border:none;background:transparent;outline:none;width:100%}
.copy-grid{display:flex;flex-wrap:wrap;gap:12px}
.copy-card{flex:0 1 auto;max-width:100%;min-width:56px;display:flex;flex-direction:column;align-items:center;gap:5px;padding:13px 14px 11px;border-radius:14px;cursor:pointer;text-align:center;
  border:1px solid var(--line);background:var(--card2);transition:transform .12s ease,border-color .12s ease}
.copy-card:hover{border-color:var(--brand);transform:translateY(-2px)}
.copy-card .no{font-size:13px;color:var(--ink3);font-variant-numeric:tabular-nums}
.copy-card .gl{font-size:20px;line-height:1.5;display:flex;align-items:center;overflow-wrap:anywhere;color:var(--ink)}
.copy-card .mt{font-size:13px;color:var(--ink3)}

/* ---------- Tạo tên theo chủ đề ---------- */
.topic-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(178px,1fr));gap:12px}
.topic{display:flex;gap:11px;align-items:center;padding:10px;border-radius:13px;cursor:pointer;text-align:left;
  border:1px solid var(--line);background:var(--card2);color:inherit;min-width:0}
.topic:hover{border-color:var(--brand)}
.topic-mark{width:44px;height:44px;flex:none;border-radius:12px;display:grid;place-items:center;color:#fff;font-size:19px;font-weight:800;
  background:linear-gradient(140deg,var(--brand2),#5b7cff)}
.topic b{display:block;font-size:15px;font-weight:700;line-height:1.3;word-break:break-word}
.topic small{font-size:13px;color:var(--ink3)}

/* ---------- Đánh giá ---------- */
.rate{display:grid;grid-template-columns:1fr 1fr;gap:24px;background:linear-gradient(150deg,#1e1b3d,var(--dark));border-radius:20px;padding:26px;color:#fff}
.rate h2{font-size:20px;font-weight:800;margin-bottom:4px;line-height:1.35}
.rate h3{font-size:17px;font-weight:700;margin-bottom:12px}
.rate>div>p{color:#a9aecd;font-size:15px;margin-bottom:18px}
.rate-note{margin-top:12px;font-size:14px;color:#a9aecd}
.vote-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.vote{padding:20px;border-radius:16px;cursor:pointer;text-align:center;border:1px solid rgba(255,255,255,.13);background:rgba(255,255,255,.05);color:#fff}
.vote .flip{display:inline-block;transform:rotate(180deg)}
.vote b{display:block;font-size:18px;font-weight:700;margin-top:8px}
.vote em{display:block;font-style:normal;font-size:28px;font-weight:800;font-variant-numeric:tabular-nums}
.vote.up em{color:#5ddc9a}.vote.down em{color:#ffc46b}
.vote.up.is-active{border-color:#5ddc9a;background:rgba(93,220,154,.14)}
.vote.down.is-active{border-color:#ffc46b;background:rgba(255,196,107,.14)}
.wants{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.want{display:flex;align-items:center;gap:10px;padding:12px 13px;border-radius:11px;cursor:pointer;text-align:left;font-size:15px;
  border:1px solid rgba(255,255,255,.13);background:rgba(255,255,255,.05);color:#e7e9f6}
.want i{width:20px;height:20px;flex:none;border-radius:6px;border:1px solid rgba(255,255,255,.3);display:grid;place-items:center}
.want i svg{opacity:0}
.want.is-active{border-color:var(--brand);background:rgba(255,90,60,.14)}
.want.is-active i{background:var(--brand);border-color:var(--brand)}
.want.is-active i svg{opacity:1}
.rate-send{display:flex;gap:8px;margin-top:12px}
.rate-send input{flex:1;min-width:0;padding:13px 15px;border-radius:12px;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);color:#fff;outline:none}
.rate-send input::placeholder{color:#8a90b4}
.rate-send .btn{white-space:nowrap;padding:13px 20px}

/* ---------- Câu hỏi thường gặp ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;align-items:start}
.faq{border:1px solid var(--line);border-radius:12px;background:var(--card2);overflow:hidden}
.faq>button{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;border:none;background:transparent;
  cursor:pointer;text-align:left;font-size:16px;font-weight:600;color:inherit}
.faq>button svg{flex:none;transition:transform .18s ease}
.faq.is-open>button svg{transform:rotate(180deg)}
.faq .ans{display:none;padding:0 16px 15px;color:var(--ink2);font-size:16px}
.faq.is-open .ans{display:block}

/* ---------- Ảnh giữ chỗ ---------- */
.ph{border:1px solid var(--line);border-radius:12px;display:grid;place-items:center;color:var(--ink3);
  background-image:repeating-linear-gradient(135deg,var(--line) 0 7px,transparent 7px 14px)}
.ph-news{width:86px;height:60px;flex:none;border-radius:10px;object-fit:cover}
.ph-thumb{width:186px;height:124px;flex:none;border-radius:12px;object-fit:cover}

/* ---------- Cột bên ---------- */
.side-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}
.side-head .sec-title{margin:0}
.side-head a{font-size:14px}
.news-item{display:flex;gap:12px;color:inherit;align-items:flex-start}
.news-item:hover{color:var(--brand)}
.news-item b{font-size:15px;font-weight:600;line-height:1.35;display:block}
.news-item span span,.news-item>span>span{font-size:13px;color:var(--ink3)}
.rank-item{display:flex;gap:12px;color:inherit;align-items:flex-start}
.rank-item:hover{color:var(--brand)}
.rank-item .n{font-size:20px;font-weight:800;color:var(--line);width:26px;flex:none;font-variant-numeric:tabular-nums}
.rank-item b{display:block;font-size:15px;font-weight:600;line-height:1.35}
.stats-card{background:linear-gradient(160deg,#1d1b3a,var(--dark));border-radius:var(--r);padding:20px;color:#fff}
.stats-card .sec-title{color:#fff}
.stats-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.stat{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:13px}
.stat b{display:block;font-size:20px;font-weight:800;font-variant-numeric:tabular-nums}
.stat span{font-size:13px;color:#a9aecd}
.stats-note{margin-top:16px;font-size:14px;color:#a9aecd}
.stack-bars{gap:11px;margin-top:9px}
.bar{height:7px;border-radius:99px;background:rgba(255,255,255,.12)}
.bar>i{display:block;height:7px;border-radius:99px;background:var(--grad)}
.bar.v>i{background:var(--grad2)}
.bar-row{display:flex;justify-content:space-between;font-size:13px;margin-bottom:5px;color:#c7cbe6}
.cta-box{border-radius:16px;padding:22px;background:linear-gradient(120deg,#241f47,#3f1f3c);color:#fff}
.cta-box b{font-size:20px;font-weight:800;line-height:1.28;display:block}
.cta-box p{margin:8px 0 14px;color:#b8bdd8;font-size:15px}

/* ---------- Bài viết ---------- */
.page-head,.post-head{color:#fff;background:radial-gradient(900px 420px at 18% -30%,#3b2a6d 0,transparent 60%),linear-gradient(180deg,var(--dark2),#100f24)}
.post-head{background:radial-gradient(900px 420px at 80% -40%,#7a2a4d 0,transparent 60%),linear-gradient(180deg,var(--dark2),#100f24)}
.page-head .container,.post-head .container{padding-top:30px;padding-bottom:36px}
.page-head h1,.post-head h1{margin:10px 0 0;font-size:38px;line-height:1.18;font-weight:800;letter-spacing:-.4px}
.post-head h1{max-width:24ch}
.page-head p,.post-head .lead{margin:10px 0 0;max-width:68ch;color:#c7cbe6}
.post-head .lead{font-size:18px}
.head-meta{margin-top:14px;font-size:14px;color:#9aa1c4}
.head-date{font-size:14px;color:#9aa1c4}
.meta-row-head{margin-top:12px}
.crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:#9aa1c4;flex-wrap:wrap}
.crumb a{color:#9aa1c4}.crumb a:hover{color:#fff}.crumb b{color:#fff;font-weight:400}
.head-tools{margin-top:20px;display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.search-dark{display:flex;align-items:center;gap:9px;padding:12px 16px;border-radius:12px;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);flex:1;max-width:420px;color:#9aa1c4}
.search-dark input{border:none;background:transparent;outline:none;width:100%;color:#fff}
.search-dark input::placeholder{color:#8a90b4}
.post-row{display:flex;gap:16px;padding:14px;border:1px solid var(--line);border-radius:var(--r);background:var(--card)}
.post-row:hover{border-color:var(--brand);background:var(--card2)}
.post-row .body{display:flex;flex-direction:column;gap:6px;min-width:0}
.post-row-thumb{flex:none;display:block}
.post-row-title{font-size:19px;line-height:1.32;font-weight:700}
.post-row-title a{color:inherit}
.post-row-title a:hover{color:var(--brand)}
.post-row .ex{color:var(--ink2);font-size:16px}
.meta-row{display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.pager{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:6px;flex-wrap:wrap}
.pager .page-numbers{min-width:42px;height:42px;padding:0 12px;border-radius:11px;font-size:15px;font-weight:700;cursor:pointer;
  border:1px solid var(--line);background:var(--card2);color:var(--ink2);display:inline-flex;align-items:center;justify-content:center}
.pager .page-numbers:hover{border-color:var(--brand);color:var(--brand)}
.pager .page-numbers.current{background:var(--brand);border-color:var(--brand);color:#fff}
.progress{position:fixed;top:0;left:0;height:3px;z-index:70;width:0;background:var(--grad)}
.post-cover{margin:0 0 20px}
.post-cover img{border-radius:14px;width:100%}
.share{margin-top:24px;padding-top:18px;border-top:1px solid var(--line);display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.prevnext{display:flex;gap:14px;margin-top:22px}
.prevnext a{flex:1;display:flex;flex-direction:column;gap:5px;padding:18px;border:1px solid var(--line);border-radius:var(--r);background:var(--card);color:inherit}
.prevnext a:hover{border-color:var(--brand);color:inherit}
.prevnext b{font-size:17px;font-weight:700;line-height:1.35}
.prevnext .r{text-align:right}

/* ---------- Nội dung soạn thảo ---------- */
.prose{font-size:17px}
.prose h2{margin:28px 0 10px;font-size:24px;font-weight:800;scroll-margin-top:90px;line-height:1.3}
.prose h3{margin:22px 0 8px;font-size:19px;font-weight:700;line-height:1.35}
.prose h4{margin:18px 0 8px;font-size:17px;font-weight:700}
.prose p{margin:0 0 14px;color:var(--ink2)}
.prose>*:first-child{margin-top:0}
.prose ul,.prose ol{margin:0 0 16px;padding-left:22px;color:var(--ink2)}
.prose li{margin-bottom:6px}
.prose a{text-decoration:underline;text-underline-offset:2px}
.prose img{border-radius:12px;margin:0 0 14px}
.prose figure{margin:0 0 16px}
.prose figcaption{font-size:14px;color:var(--ink3);text-align:center;margin-top:6px}
.prose blockquote{margin:0 0 16px;padding:14px 18px;border-left:3px solid var(--brand);background:var(--card2);border-radius:0 12px 12px 0;color:var(--ink2)}
.prose table{width:100%;border-collapse:collapse;margin:0 0 16px;font-size:16px}
.prose th,.prose td{border:1px solid var(--line);padding:9px 11px;text-align:left}
.prose code{background:var(--card2);border:1px solid var(--line);border-radius:6px;padding:1px 6px;font-size:.92em}
.prose pre{overflow-x:auto;background:var(--card2);border:1px solid var(--line);border-radius:12px;padding:14px;margin:0 0 16px}
.prose hr{border:none;border-top:1px solid var(--line);margin:24px 0}
.upd{color:var(--ink3);font-size:14px}
.chips-names{margin:0 0 16px}
/* Chip trong .chips-names là TÊN do máy tạo — là kết quả, nên chữ để 400 và được
   xuống dòng; chip chủ đề (.chips khác) vẫn là nhãn điều hướng nên giữ đậm. */
.chips-names .chip{font-weight:400;white-space:normal;overflow-wrap:anywhere;max-width:100%}

/* ---------- Bình luận ---------- */
.comments{margin-top:22px}
.comment-list{list-style:none;margin:0 0 20px;padding:0}
.comment-list ol{list-style:none;padding-left:22px}
.comment-body{padding:14px 0;border-top:1px solid var(--line)}
.comment-form p{margin:0 0 12px}
.comment-form label{display:block;font-size:14px;color:var(--ink3);margin-bottom:5px}
.comment-form input[type=text],.comment-form input[type=email],.comment-form input[type=url],.comment-form textarea{
  width:100%;padding:11px 13px;border-radius:11px;border:1px solid var(--line);background:var(--card2);outline:none}
.comment-form .submit{background:var(--grad);border:none;color:#fff;font-weight:700;padding:11px 20px;border-radius:11px;cursor:pointer}

/* ---------- Chân trang ---------- */
.site-footer{background:var(--dark);color:#c7cbe6;padding:34px 0 26px;margin-top:22px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:26px}
.foot-grid b{font-size:15px;color:#fff;text-transform:uppercase;letter-spacing:.4px;display:block}
.foot-brand b{font-size:18px;text-transform:none;letter-spacing:0}
.foot-brand b span{color:var(--brand)}
.foot-brand p{margin-top:8px;font-size:14px;color:#8f96b8;max-width:38ch}
.foot-links{margin-top:11px}
.foot-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:7px}
.foot-list a{color:#8f96b8;font-size:14px}
.foot-list a:hover{color:#fff}
.copyright{margin-top:24px;padding-top:16px;border-top:1px solid rgba(255,255,255,.08);font-size:13px;color:#767d9e}

/* ---------- Thanh dưới di động / nút phụ ---------- */
.mobile-nav{display:none;position:fixed;left:0;right:0;bottom:0;z-index:60;background:var(--card);border-top:1px solid var(--line);
  box-shadow:0 -6px 24px rgba(15,17,40,.12);grid-template-columns:repeat(5,1fr);align-items:end;padding:8px 6px calc(8px + env(safe-area-inset-bottom))}
.mobile-nav a{display:flex;flex-direction:column;align-items:center;justify-content:flex-end;gap:4px;min-height:52px;padding:6px 2px;font-size:12px;font-weight:600;color:var(--ink3);text-align:center}
.mobile-nav a.is-center{color:var(--brand)}
.mobile-nav .fab{width:52px;height:52px;margin-top:-26px;border-radius:50%;background:linear-gradient(140deg,var(--brand),#ff9538);
  box-shadow:0 8px 18px rgba(255,90,60,.4);border:4px solid var(--card);display:grid;place-items:center}
.mobile-nav .mobile-list,.mobile-nav .mobile-list li{display:contents;list-style:none;margin:0;padding:0}
.to-top{position:fixed;right:18px;bottom:24px;z-index:50;width:46px;height:46px;border-radius:50%;border:1px solid var(--line);background:var(--card);
  color:var(--ink2);display:none;place-items:center;cursor:pointer;box-shadow:0 6px 18px rgba(15,17,40,.16)}
.to-top.is-on{display:grid}
.to-top:hover{color:var(--brand);border-color:var(--brand)}
.toast{position:fixed;left:50%;bottom:110px;z-index:80;transform:translate(-50%,18px);opacity:0;pointer-events:none;
  padding:12px 20px;border-radius:12px;background:var(--dark);color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 10px 28px rgba(0,0,0,.3);display:flex;align-items:center;gap:9px;max-width:88vw;transition:opacity .18s ease,transform .18s ease}
.toast.is-on{opacity:1;transform:translate(-50%,0)}
.toast span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ==========================================================================
   Đáp ứng
   ========================================================================== */
@media(max-width:1080px){
  .hero h1{font-size:38px}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr}
}
@media(max-width:980px){
  :root{--pad:15px}
  body{padding-bottom:92px}
  .nav{display:none}
  .mobile-nav{display:grid}
  .to-top.is-on{bottom:100px}
  .grid-main,.grid-blog,.gen,.prevnext,.rate,.faq-grid{grid-template-columns:1fr;display:grid}
  .prevnext{gap:12px}
  .prevnext .r{text-align:left}
  .hero h1,.page-head h1,.post-head h1{font-size:30px}
  .hero .container{padding-top:30px;padding-bottom:36px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .site-header .container{gap:12px}
}
@media(max-width:720px){
  .grid3,.grid4,.stats-grid,.vote-grid,.wants{grid-template-columns:1fr 1fr}
  .topic-grid{grid-template-columns:1fr 1fr}
  .rate{padding:18px}
  .card{padding:16px}
  .preview{font-size:24px;padding:18px 12px}
  .post-row{padding:11px;gap:12px}
  .post-row-title{font-size:17px}
  .post-row .ex{display:none}
  .ph-thumb{width:112px;height:86px}
  .table .c-num{display:none}
  .table th:nth-child(3),.table td:nth-child(3){display:none}
  .prose h2{font-size:21px}
  .sec-title{font-size:18px}
  .foot-grid{grid-template-columns:1fr}
}
@media(max-width:420px){
  .grid4{grid-template-columns:1fr 1fr}
  .topic-grid{grid-template-columns:1fr}
  .rate-send{flex-direction:column}
  .brand-text small{display:none}
  .gen-actions{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important;animation:none!important}
}
@media print{
  .site-header,.mobile-nav,.to-top,.toast,.progress,.gen,.gen-out{display:none!important}
}

/* Hero: bản nền dọc riêng cho màn hình hẹp — bản 16:9 bị cắt mất hai cột trụ.
   Dán full chiều ngang ở đỉnh; dải mờ đã nướng sẵn trong ảnh nên không lộ mối nối. */
@media(max-width:720px){
  .hero{background-image:radial-gradient(680px 380px at 90% 6%,rgba(122,42,77,.30) 0,transparent 62%),
             url("../img/hero-lien-quan-doc.webp");
    background-size:auto,100% auto;
    background-position:center,center top}
}