/*
Theme Name: Hỏi Đáp Trực Tuyến
Theme URI: https://hoidaptructuyen.vn/
Author: Công ty Loki Việt Nam
Description: Theme hỏi đáp nhẹ, chuẩn SEO cho hoidaptructuyen.vn – câu hỏi/câu trả lời, danh mục, thành viên, schema QAPage, giữ nguyên cấu trúc URL cũ (/cau-hoi/, /answer/, /danh-muc/, /thanh-vien/).
Version: 1.1.1
Requires at least: 6.4
Requires PHP: 7.4
License: GPL-2.0-or-later
Text Domain: hoidap
*/

:root{
	--bg:#f4f6fb;--card:#fff;--line:#e5e9f2;--line-2:#eef1f7;
	--text:#0f172a;--text-2:#334155;--muted:#64748b;
	--pri:#2563eb;--pri-d:#1d4ed8;--pri-l:#eff4ff;
	--acc:#f59e0b;--ok:#16a34a;--ok-l:#ecfdf3;
	--r:14px;--r-sm:10px;
	--sh:0 1px 2px rgba(15,23,42,.04),0 1px 3px rgba(15,23,42,.06);
	--sh-2:0 10px 30px -12px rgba(15,23,42,.18);
	--font:Inter,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
	--hdr:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--hdr) + 16px)}
html.no-scroll{overflow:hidden}
body{margin:0;background:var(--bg);color:var(--text);font:400 16px/1.6 var(--font);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img,svg{max-width:100%;height:auto;vertical-align:middle}
a{color:var(--pri);text-decoration:none}
a:hover{color:var(--pri-d)}
h1,h2,h3{line-height:1.3;margin:0 0 .5em;color:var(--text);letter-spacing:-.01em}
p{margin:0 0 1em}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid rgba(37,99,235,.45);outline-offset:2px;border-radius:6px}
.sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;z-index:100;background:#fff;padding:8px 14px;border-radius:8px}
.skip:focus{left:8px}
.muted{color:var(--muted)}
.center{text-align:center}
.wrap{width:100%;max-width:1260px;margin:0 auto;padding:0 16px}
.ic{flex:none}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:42px;padding:0 18px;border-radius:999px;border:1px solid transparent;font-weight:600;font-size:15px;cursor:pointer;white-space:nowrap;transition:background .15s,box-shadow .15s,transform .05s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--pri);color:#fff;box-shadow:0 6px 16px -6px rgba(37,99,235,.6)}
.btn-primary:hover{background:var(--pri-d);color:#fff}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--text-2)}
.btn-ghost:hover{border-color:#cbd5e1;color:var(--text)}
.btn-sm{height:36px;padding:0 14px;font-size:14px}
.btn-block{width:100%}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;border:0;background:transparent;color:var(--text-2);cursor:pointer}
.icon-btn:hover{background:var(--line-2)}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(12px);-webkit-backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}
.hdr{display:flex;align-items:center;gap:16px;height:var(--hdr)}
.brand a{display:flex;align-items:center;gap:10px;color:var(--text)}
.brand svg{width:40px;height:40px}
.brand-txt{display:flex;flex-direction:column;line-height:1}
.brand-a{font-weight:800;font-size:19px;letter-spacing:-.02em}
.brand-b{font-weight:600;font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--pri);margin-top:4px}
.hdr-search{flex:1;max-width:460px;position:relative;display:flex;align-items:center}
.hdr-search .ic{position:absolute;left:14px;color:var(--muted);pointer-events:none}
.hdr-search input{width:100%;height:42px;border:1px solid var(--line);background:var(--bg);border-radius:999px;padding:0 16px 0 42px;transition:border-color .15s,background .15s,box-shadow .15s}
.hdr-search input:focus{outline:0;background:#fff;border-color:var(--pri);box-shadow:0 0 0 4px rgba(37,99,235,.12)}
.hdr-nav .menu{display:flex;gap:4px;list-style:none;margin:0;padding:0}
.hdr-nav a{display:block;padding:8px 12px;border-radius:10px;color:var(--text-2);font-weight:500;font-size:15px}
.hdr-nav a:hover,.hdr-nav .current-menu-item a{background:var(--pri-l);color:var(--pri)}
.hdr-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.hdr-login{font-weight:600;color:var(--text-2);padding:8px 6px}
.menu-toggle,.search-toggle{display:none}

/* ---------- Drawer ---------- */
.drawer{position:fixed;inset:0;z-index:80;background:rgba(15,23,42,.45)}
.drawer[hidden]{display:none}
.drawer-panel{position:absolute;inset:0 auto 0 0;width:min(320px,86vw);background:#fff;padding:14px 14px 24px;overflow:auto;box-shadow:var(--sh-2);animation:slide .2s ease-out}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
@keyframes slide{from{transform:translateX(-100%)}to{transform:none}}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:radial-gradient(1000px 400px at 85% -10%,rgba(96,165,250,.55),transparent 60%),linear-gradient(135deg,#1e3a8a 0%,#1d4ed8 55%,#2563eb 100%);color:#fff}
.hero::after{content:"?";position:absolute;right:4%;top:-40px;font:800 340px/1 var(--font);color:rgba(255,255,255,.06);pointer-events:none}
.hero-in{position:relative;z-index:1;padding:52px 16px 46px;text-align:center}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;font-weight:600;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.2);padding:6px 14px;border-radius:999px;margin-bottom:18px}
.hero h1{color:#fff;font-size:clamp(28px,4.4vw,46px);font-weight:800;letter-spacing:-.025em;margin-bottom:12px}
.hero h1 span{color:#fde68a}
.hero-sub{max-width:680px;margin:0 auto 26px;font-size:17px;color:rgba(255,255,255,.88)}
.hero-search{position:relative;display:flex;align-items:center;max-width:680px;margin:0 auto;background:#fff;border-radius:999px;padding:6px;box-shadow:0 20px 40px -18px rgba(2,6,23,.55)}
.hero-search .ic{position:absolute;left:20px;color:var(--muted)}
.hero-search input{flex:1;min-width:0;height:48px;border:0;background:transparent;padding:0 12px 0 52px;font-size:16.5px;color:var(--text)}
.hero-search input:focus{outline:0}
.hero-search .btn{height:48px;padding:0 24px}
.hero-chips{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:22px}
.chip-hero{background:rgba(255,255,255,.12)!important;border-color:rgba(255,255,255,.22)!important;color:#fff!important}
.chip-hero:hover{background:rgba(255,255,255,.22)!important}

/* ---------- Layout ---------- */
.layout{display:grid;grid-template-columns:220px minmax(0,1fr) 312px;gap:24px;padding-top:24px;padding-bottom:48px;align-items:start}
.col-nav{position:sticky;top:calc(var(--hdr) + 24px)}
.col-aside{position:sticky;top:calc(var(--hdr) + 24px)}
.col-main{min-width:0}

/* ---------- Side nav ---------- */
.side-nav ul{list-style:none;margin:14px 0 0;padding:0}
.side-nav li a{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:12px;color:var(--text-2);font-weight:500}
.side-nav li a:hover{background:#fff;color:var(--text)}
.side-nav li a.is-on{background:#fff;color:var(--pri);font-weight:600;box-shadow:var(--sh)}
.side-nav li a .ic{color:var(--muted)}
.side-nav li a.is-on .ic{color:var(--pri)}
.side-trust{display:flex;gap:10px;margin-top:18px;padding:14px;border-radius:var(--r);background:linear-gradient(180deg,#fff,#f8fafc);border:1px solid var(--line);font-size:13.5px;color:var(--muted)}
.side-trust .ic{color:var(--ok);margin-top:2px}
.side-trust p{margin:0}

/* ---------- Boxes ---------- */
.box{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh);padding:20px}
.box+.box,.aside .box+.box{margin-top:16px}
.box-h{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:700;margin:0 0 14px}
.box-h .ic{color:var(--pri)}
.more{display:inline-flex;align-items:center;gap:4px;font-weight:600;font-size:14px;margin-top:12px}
.empty{text-align:center;padding:36px 20px;color:var(--muted)}

/* ---------- Stats ---------- */
.stats-box{display:grid;grid-template-columns:repeat(3,1fr);text-align:center;padding:16px 8px}
.stats-box div+div{border-left:1px solid var(--line)}
.stats-box strong{display:block;font-size:22px;font-weight:800;color:var(--text);letter-spacing:-.02em}
.stats-box span{font-size:12.5px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;font-weight:600}

/* ---------- Chips ---------- */
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;font-size:13px;font-weight:600;background:hsl(var(--h,217) 90% 96%);color:hsl(var(--h,217) 60% 34%);border:1px solid hsl(var(--h,217) 70% 90%);line-height:1.5;white-space:nowrap}
.chip:hover{background:hsl(var(--h,217) 90% 92%);color:hsl(var(--h,217) 65% 28%)}
.chip span{font-size:13px}

/* ---------- Lists ---------- */
.list-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin:2px 0 14px}
.list-head h2{font-size:20px;font-weight:800;margin:0}
.list-head .more{margin:0}
.qlist{display:flex;flex-direction:column;gap:12px}
.qcard{display:flex;gap:16px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px;box-shadow:var(--sh);transition:border-color .15s,box-shadow .15s,transform .15s}
.qcard:hover{border-color:#c7d2fe;box-shadow:var(--sh-2)}
.qcard-stat{flex:none;width:64px;height:64px;border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--line-2);color:var(--muted)}
.qcard-num{font-size:20px;font-weight:800;line-height:1.1}
.qcard-lbl{display:flex;align-items:center;gap:2px;font-size:11.5px;font-weight:600}
.is-answered .qcard-stat{background:var(--pri-l);color:var(--pri)}
.is-solved .qcard-stat{background:var(--ok);color:#fff}
.qcard-body{min-width:0;flex:1}
.qcard-title{font-size:17.5px;font-weight:700;margin:0 0 4px;line-height:1.4}
.qcard-title a{color:var(--text)}
.qcard-title a:hover{color:var(--pri)}
.qcard-ex{color:var(--muted);font-size:14.5px;margin:0 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.qcard-meta{display:flex;flex-wrap:wrap;align-items:center;gap:6px 14px;font-size:13px;color:var(--muted)}
.who{display:inline-flex;align-items:center;gap:8px;color:var(--text-2);font-weight:500}
.dot{display:inline-flex;align-items:center;gap:5px}

/* ---------- Avatars & levels ---------- */
.av{--s:40px;display:inline-flex;align-items:center;justify-content:center;width:var(--s);height:var(--s);border-radius:50%;flex:none;font-weight:700;font-size:calc(var(--s) * .42);color:#fff;background:linear-gradient(135deg,hsl(var(--h,217) 75% 58%),hsl(calc(var(--h,217) + 30) 70% 45%));object-fit:cover;line-height:1}
img.av{background:var(--line-2)}
.lvl{display:inline-block;font-size:11px;font-weight:700;padding:2px 8px;border-radius:999px;background:#fff7ed;color:#c2410c;border:1px solid #fed7aa;margin-left:6px;vertical-align:middle;line-height:1.5}
.lvl-mod{background:var(--ok-l);color:#15803d;border-color:#bbf7d0}

/* ---------- Tabs, pager ---------- */
.tabs{display:flex;gap:4px;padding:4px;background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:14px;width:max-content;max-width:100%;overflow-x:auto}
.tab{padding:7px 14px;border-radius:9px;font-size:14px;font-weight:600;color:var(--muted);white-space:nowrap}
.tab:hover{color:var(--text)}
.tab.is-on{background:var(--pri);color:#fff}
.pager{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;margin-top:24px}
.pager .page-numbers{min-width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;padding:0 12px;border-radius:10px;background:#fff;border:1px solid var(--line);color:var(--text-2);font-weight:600;font-size:14px}
.pager .current{background:var(--pri);border-color:var(--pri);color:#fff}

/* ---------- Breadcrumb & page head ---------- */
.crumbs ol{display:flex;flex-wrap:wrap;gap:4px;list-style:none;margin:0 0 14px;padding:0;font-size:13.5px;color:var(--muted)}
.crumbs li+li::before{content:"›";margin-right:6px;color:#94a3b8}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--pri)}
.page-head{display:flex;align-items:center;gap:16px;margin-bottom:16px}
.page-head h1{font-size:clamp(24px,3vw,30px);font-weight:800;margin:0 0 4px}
.page-head p{margin:0;color:var(--muted)}
.cat-ico{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;font-size:22px;background:hsl(var(--h,217) 90% 95%);flex:none}
.cat-ico.lg{width:60px;height:60px;font-size:30px;border-radius:16px}

/* ---------- Single question ---------- */
.q-head h1{font-size:clamp(24px,3.2vw,32px);font-weight:800;letter-spacing:-.02em;margin:12px 0 14px}
.entry .q-head h1{margin-top:0}
.q-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;font-size:14px;color:var(--muted);padding-bottom:16px;border-bottom:1px solid var(--line-2);margin-bottom:18px}
.q-meta .who span{display:flex;align-items:center;flex-wrap:wrap}
.q-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line-2)}
.tags{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:12px;color:var(--muted);font-size:14px}
.tags a{padding:3px 10px;border-radius:8px;background:var(--line-2);color:var(--text-2);font-size:13px}
.sec-h{font-size:20px;font-weight:800;margin:28px 0 14px}
.answer-form .sec-h,.answers .box .sec-h{margin-top:0}
.answers .answer{position:relative}
.answer.is-best{border-color:#86efac;box-shadow:0 0 0 3px var(--ok-l),var(--sh)}
.best-flag{display:inline-flex;align-items:center;gap:6px;background:var(--ok);color:#fff;font-size:13px;font-weight:700;padding:4px 12px;border-radius:999px;margin-bottom:12px}
.a-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}
.a-head .who span{display:flex;align-items:center;flex-wrap:wrap}
.a-time{font-size:13px;color:var(--muted)}
.answer-form{margin-top:16px}

/* ---------- Editorial trust ---------- */
.a-sources{margin-top:18px;padding:12px 16px;border-radius:12px;background:var(--line-2);font-size:14px;color:var(--text-2)}
.a-sources ul{margin:6px 0 0;padding-left:1.2em}
.a-ymyl{margin:14px 0 0;padding:10px 14px;border-radius:12px;background:#fffbeb;border:1px solid #fde68a;color:#92400e;font-size:14px}
.a-review{display:flex;align-items:center;gap:6px;margin:16px 0 0;padding-top:12px;border-top:1px dashed var(--line);font-size:13px;color:var(--muted)}
.a-review .ic{color:var(--ok)}

/* ---------- Prose ---------- */
.prose{font-size:16.5px;line-height:1.75;color:var(--text-2);overflow-wrap:anywhere}
.prose>*:last-child{margin-bottom:0}
.prose h2{font-size:22px;margin:1.6em 0 .6em;color:var(--text)}
.prose h3{font-size:19px;margin:1.4em 0 .5em;color:var(--text)}
.prose ul,.prose ol{padding-left:1.3em;margin:0 0 1em}
.prose li{margin:.3em 0}
.prose a{text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(37,99,235,.35)}
.prose img{border-radius:12px}
.prose blockquote{margin:1.2em 0;padding:12px 18px;border-left:4px solid var(--pri);background:var(--pri-l);border-radius:0 12px 12px 0;color:var(--text)}
.prose .tblwrap,.prose table{display:block;width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}
.prose table{border-collapse:collapse;font-size:15px}
.prose th,.prose td{border:1px solid var(--line);padding:8px 12px;text-align:left}
.prose th{background:var(--line-2)}
.prose code{background:var(--line-2);padding:2px 6px;border-radius:6px;font-size:.9em}
.prose pre{background:#0f172a;color:#e2e8f0;padding:16px;border-radius:12px;overflow:auto}

/* ---------- Related & sidebar lists ---------- */
.rel-list{list-style:none;margin:0;padding:0;background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh);overflow:hidden}
.rel-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px}
.rel-list li+li{border-top:1px solid var(--line-2)}
.rel-list a{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:600}
.rel-list a .ic{color:var(--pri)}
.rel-list em{font-style:normal;font-size:13px;color:var(--muted);white-space:nowrap}
.hot-list{list-style:none;counter-reset:h;margin:0;padding:0}
.hot-list li{counter-increment:h;position:relative;padding:0 0 12px 34px}
.hot-list li+li{padding-top:12px;border-top:1px solid var(--line-2)}
.hot-list li::before{content:counter(h);position:absolute;left:0;top:0;width:24px;height:24px;border-radius:8px;background:var(--line-2);color:var(--muted);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center}
.hot-list li+li::before{top:12px}
.hot-list li:nth-child(-n+3)::before{background:#fef3c7;color:#b45309}
.hot-list a{display:block;color:var(--text);font-weight:600;font-size:14.5px;line-height:1.45}
.hot-list a:hover{color:var(--pri)}
.hot-list span{font-size:12.5px;color:var(--muted)}
.top-users{list-style:none;margin:0;padding:0}
.top-users li{display:flex;align-items:center;gap:10px;padding:7px 0}
.top-users a{flex:1;min-width:0;color:var(--text);font-weight:600;font-size:14.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.top-users .n{font-size:13px;color:var(--muted);font-weight:600}
.rank{width:22px;font-size:13px;font-weight:800;color:var(--muted);text-align:center}
.rank.r1{color:#d97706}.rank.r2{color:#64748b}.rank.r3{color:#b45309}

/* ---------- Category & member grids ---------- */
.home-cats{margin-top:32px}
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px}
.cat-grid-all{margin-top:20px}
.cat-tile{display:flex;flex-direction:column;gap:6px;padding:16px;border-radius:var(--r);background:#fff;border:1px solid var(--line);box-shadow:var(--sh);color:var(--text);transition:transform .15s,box-shadow .15s,border-color .15s}
.cat-tile:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:hsl(var(--h) 70% 85%);color:var(--text)}
.cat-name{font-weight:700;font-size:15.5px;line-height:1.35}
.cat-n{font-size:13px;color:var(--muted)}
.member-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px;margin-top:20px}
.member{display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center;padding:18px 12px;border:1px solid var(--line);border-radius:var(--r);color:var(--text);background:#fff}
.member:hover{border-color:#c7d2fe;box-shadow:var(--sh-2);color:var(--text)}
.member .lvl{margin:0}
.member .muted{font-size:13px}
.profile{display:flex;gap:20px;align-items:center;margin-bottom:8px}
.profile h1{font-size:26px;margin:0 6px 6px 0;display:inline-block}
.profile .lvl{margin-left:0}
.profile-stats{display:flex;flex-wrap:wrap;gap:6px 18px;list-style:none;margin:10px 0 0;padding:0;color:var(--muted);font-size:14px}
.profile-stats strong{color:var(--text)}
.level-table table{width:100%;border-collapse:collapse;margin-top:16px}
.level-table th,.level-table td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.level-table th{font-size:13px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
.level-table .lvl{margin:0;font-size:12.5px}

/* ---------- Posts ---------- */
.post-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.post-card{padding:0;overflow:hidden;margin:0!important}
.post-card .thumb img{display:block;width:100%;aspect-ratio:16/9;object-fit:cover}
.post-card-b{padding:16px 18px}
.post-card h2{font-size:17px;margin:0 0 6px}
.post-card h2 a{color:var(--text)}
.post-card p{color:var(--muted);font-size:14.5px;margin-bottom:8px}
.entry-thumb{margin:0 0 20px}
.entry-thumb img{border-radius:12px;width:100%}

/* ---------- Forms ---------- */
.form label{display:block;font-weight:600;font-size:14.5px;margin-bottom:6px}
.form label em{color:#dc2626;font-style:normal}
.form input[type=text],.form select,.form textarea{width:100%;border:1px solid var(--line);border-radius:12px;padding:11px 14px;background:#fff;transition:border-color .15s,box-shadow .15s}
.form input:focus,.form select:focus,.form textarea:focus{outline:0;border-color:var(--pri);box-shadow:0 0 0 4px rgba(37,99,235,.12)}
.form textarea{resize:vertical;min-height:140px}
.hp{position:absolute!important;left:-9999px}
.tips{display:flex;gap:10px;padding:12px 14px;border-radius:12px;background:#fffbeb;border:1px solid #fde68a;color:#92400e;font-size:14px;margin-bottom:16px}
.tips p{margin:0}
.login-cta{display:flex;gap:16px;align-items:flex-start}
.login-cta>.ic{color:var(--pri);margin-top:4px}
.login-cta h2{font-size:19px}
.login-cta .row{display:flex;gap:10px;flex-wrap:wrap;margin:0}
.notice{padding:12px 16px;border-radius:12px;margin-bottom:16px;font-weight:500}
.notice-ok{background:var(--ok-l);color:#166534;border:1px solid #bbf7d0}
.notice-warn{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}

/* ---------- 404 ---------- */
.nf{text-align:center;padding:48px 20px}
.nf-code{font-size:84px;font-weight:800;line-height:1;margin:0 0 8px;background:linear-gradient(135deg,var(--pri),#60a5fa);-webkit-background-clip:text;background-clip:text;color:transparent}
.nf .hero-search{margin:20px auto;box-shadow:none;border:1px solid var(--line)}

/* ---------- Footer ---------- */
.site-footer{background:#0b1324;color:#cbd5e1;margin-top:24px}
.ftr{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;padding-top:44px;padding-bottom:28px}
.site-footer .brand a,.site-footer .brand-a{color:#fff}
.site-footer .brand-b{color:#93c5fd}
.ftr-brand p{margin:16px 0;font-size:14.5px;color:#94a3b8;max-width:460px}
.ftr-stats{display:flex;gap:20px;list-style:none;margin:0;padding:0;font-size:13.5px;color:#94a3b8}
.ftr-stats strong{display:block;color:#fff;font-size:18px}
.ftr-col h2{color:#fff;font-size:15px;margin-bottom:12px}
.ftr-col ul{list-style:none;margin:0;padding:0}
.ftr-col li{margin:7px 0}
.ftr-col a{color:#94a3b8;font-size:14.5px}
.ftr-col a:hover{color:#fff}
.ftr-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;border-top:1px solid rgba(148,163,184,.18);padding-top:18px;padding-bottom:22px;font-size:13px;color:#64748b}
.ftr-bottom p{margin:0}

/* ---------- Responsive ---------- */
@media (max-width:1180px){
	.layout{grid-template-columns:minmax(0,1fr) 300px}
	.col-nav{display:none}
	.menu-toggle{display:inline-flex}
	.hdr-nav{display:none}
}
@media (max-width:900px){
	.layout{grid-template-columns:minmax(0,1fr)}
	.col-aside{position:static}
	.ftr{grid-template-columns:1fr 1fr}
	.ftr-brand{grid-column:1/-1}
}
@media (max-width:720px){
	:root{--hdr:58px}
	.hdr{gap:6px}
	.brand svg{width:34px;height:34px}
	.brand-a{font-size:17px}
	.hdr-search{display:none;position:absolute;left:0;right:0;top:var(--hdr);max-width:none;padding:10px 16px;background:#fff;border-bottom:1px solid var(--line)}
	.hdr-search .ic{left:30px}
	.search-open .hdr-search{display:flex}
	.search-toggle{display:inline-flex}
	.btn-ask{width:40px;padding:0}
	.btn-ask span{display:none}
	.hdr-login{display:none}
	.hero-in{padding:34px 16px 30px}
	.hero-sub{font-size:15.5px}
	.hero-search .btn{padding:0 16px}
	.hero-search input{padding-left:46px}
	.hero-search .ic{left:16px}
	.hero::after{font-size:220px}
	.layout{padding-top:16px;gap:16px}
	.box{padding:16px}
	.qcard{padding:14px;gap:12px}
	.qcard-stat{width:50px;height:54px}
	.qcard-num{font-size:17px}
	.qcard-lbl{font-size:10.5px;white-space:nowrap}
	.qcard-lbl .ic{display:none}
	.qcard-title{font-size:16.5px}
	.prose{font-size:16px}
	.prose table{font-size:14.5px}
	.prose thead,.prose tbody{display:table;width:100%;min-width:500px}
	.prose th,.prose td{padding:7px 10px}
	.profile{flex-direction:column;align-items:flex-start}
	.ftr{grid-template-columns:1fr;gap:28px}
	.cat-grid{grid-template-columns:repeat(2,1fr)}
	.member-grid{grid-template-columns:repeat(2,1fr)}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}