@font-face{font-family:'Prm';font-style:normal;font-weight:400;font-display:swap;src:url(../fonts/pr-400-th.woff2) format('woff2');unicode-range:U+02D7, U+0303, U+0331, U+0E01-0E5B, U+200C-200D, U+25CC}@font-face{font-family:'Prm';font-style:normal;font-weight:400;font-display:swap;src:url(../fonts/pr-400-la.woff2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}@font-face{font-family:'Prm';font-style:normal;font-weight:600;font-display:swap;src:url(../fonts/pr-600-th.woff2) format('woff2');unicode-range:U+02D7, U+0303, U+0331, U+0E01-0E5B, U+200C-200D, U+25CC}@font-face{font-family:'Prm';font-style:normal;font-weight:600;font-display:swap;src:url(../fonts/pr-600-la.woff2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
:root{--bg:#f6fbfa;--card:#fff;--ink:#17312d;--mute:#56706b;--line:#dcebe8;--teal:#14b8a6;--teal-d:#0f766e;--sun:#fde68a;--pink:#fb7185;--r:20px;--g:20px;--max:1180px;--ff:'Prm',system-ui,-apple-system,'Segoe UI',Tahoma,sans-serif;--sh:0 1px 2px rgba(23,49,45,.05),0 12px 28px -16px rgba(15,118,110,.3)}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.7 var(--ff);overflow-x:hidden}
img,svg,video,iframe{max-width:100%;height:auto}
a{color:var(--teal-d);text-underline-offset:3px}
a:hover{color:var(--ink)}
:focus-visible{outline:3px solid var(--pink);outline-offset:2px;border-radius:8px}
button,input,textarea{font:inherit;color:inherit}
button{cursor:pointer}
h1,h2,h3{font-weight:600;line-height:1.3;margin:0 0 .5em}
.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:99;background:#fff;padding:8px 14px}.skip:focus{left:8px}
.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--g)}
.ic{flex:none}
.btn-p{display:inline-flex;align-items:center;gap:8px;border:0;border-radius:999px;background:var(--teal-d);color:#fff;padding:11px 20px;font-weight:600;text-decoration:none;font-size:16px}
.btn-p:hover{background:#115e59;color:#fff}
.ghost{border:1px solid var(--line);background:#fff;border-radius:999px;padding:6px 14px;font-size:14px;color:var(--mute)}
/* header */
.bar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.bar__in{display:flex;align-items:center;gap:20px;min-height:64px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:600;font-size:20px}
.bar__nav{margin-left:auto}
.navlist{display:flex;gap:2px;list-style:none;margin:0;padding:0}
.navlist a{display:block;padding:8px 12px;border-radius:999px;text-decoration:none;color:var(--mute);font-size:15px;white-space:nowrap}
.navlist a:hover,.navlist .current-menu-item a{color:var(--teal-d);background:#e6f6f3}
.bar__cta{display:inline-flex;align-items:center;gap:8px;background:var(--teal);color:#fff;text-decoration:none;font-weight:600;border-radius:999px;padding:9px 16px;font-size:15px;white-space:nowrap}
.bar__cta:hover{color:#fff;background:var(--teal-d)}
/* hero */
.hero{background:radial-gradient(500px 240px at 15% 20%,#fef3c7,transparent 70%),radial-gradient(500px 260px at 90% 0,#ccfbf1,transparent 70%);padding:40px 0 26px}
.hero__h{font-size:clamp(32px,5vw,54px)}
.hero__h span{display:block;color:var(--teal-d)}
.hero__p{font-size:18px;color:var(--mute);max-width:640px;margin:0 0 18px}
.find{display:flex;align-items:center;gap:10px;background:#fff;border:2px solid var(--line);border-radius:999px;padding:4px 18px;max-width:560px;box-shadow:var(--sh)}
.find:focus-within{border-color:var(--teal)}
.find .ic{color:var(--mute)}
.find input{flex:1;min-width:0;border:0;outline:0;padding:11px 0;font-size:16px;background:none}
/* blocks */
.block{padding-top:40px}
.block__h{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px}
.block__h h2{display:flex;align-items:center;gap:8px;font-size:clamp(22px,2.8vw,30px);margin:0}
.block__h .ic{color:var(--teal)}
.chips{display:flex;flex-wrap:wrap;gap:8px;background:#fff;border-radius:var(--r);box-shadow:var(--sh);padding:14px}
.tabs{display:flex;gap:6px;overflow-x:auto;padding-bottom:8px;margin-bottom:10px;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tab{flex:none;border:1px solid var(--line);background:#fff;border-radius:999px;padding:6px 14px;font-size:15px;color:var(--mute);white-space:nowrap;min-height:40px}
.tab[aria-selected=true]{background:var(--teal-d);border-color:var(--teal-d);color:#fff}
.groups{display:grid;gap:14px}
.grp{background:var(--card);border-radius:var(--r);box-shadow:var(--sh);padding:16px}
.grp__t{font-size:18px;margin:0 0 10px}
.grp__t small{font-size:13px;color:var(--mute);font-weight:400;margin-left:6px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(54px,1fr));gap:6px}
.e{display:grid;place-items:center;min-height:52px;border:1px solid var(--line);background:#fbfefd;border-radius:14px;font-size:22px;padding:4px;line-height:1.2;transition:transform .12s,border-color .15s;overflow:hidden}
.e--w{grid-column:span 2;font-size:15px}
.e:hover{border-color:var(--teal);background:#fff}
.e:active{transform:scale(.92)}
.e.ok{border-color:#22c55e;background:#f0fdf4}
.how{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:30px;align-items:center;background:#fff;border-radius:24px;box-shadow:var(--sh);padding:30px}
.how__art{margin:0;justify-self:center}
.faqs{display:grid;gap:10px;max-width:900px}
.faqs details{background:#fff;border-radius:16px;box-shadow:var(--sh);padding:0 20px}
.faqs summary{list-style:none;display:flex;justify-content:space-between;align-items:center;gap:14px;padding:15px 0;font-weight:600;cursor:pointer}
.faqs summary::-webkit-details-marker{display:none}
.faqs summary .ic{transition:transform .2s;color:var(--teal)}.faqs details[open] summary .ic{transform:rotate(180deg)}
.faqs p{margin:0 0 15px;color:var(--mute)}
.posts{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.post-c{background:#fff;border-radius:var(--r);overflow:hidden;box-shadow:var(--sh);display:flex;flex-direction:column}
.post__img{display:block;aspect-ratio:16/10;overflow:hidden}.post__img img{width:100%;height:100%;object-fit:cover}
.post__body{padding:16px 18px 18px}
.post__t{font-size:18px;margin:0 0 6px}.post__t a{color:var(--ink);text-decoration:none}
.cat{display:inline-block;font-size:13px;color:var(--teal-d);text-decoration:none;margin-bottom:4px}
.meta{margin:0;color:var(--mute);font-size:14px}
/* pages */
.head{padding-top:28px;padding-bottom:18px}
.head__t{font-size:clamp(28px,3.8vw,42px)}
.head__d{color:var(--mute)}
.crumbs ol{display:flex;flex-wrap:wrap;gap:6px;list-style:none;margin:0 0 12px;padding:0;font-size:14px;color:var(--mute)}
.crumbs li+li::before{content:"›";margin-right:6px}
.crumbs a{color:var(--mute);text-decoration:none}
.crumbs span{display:inline-block;max-width:50ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:bottom}
.split{display:grid;grid-template-columns:minmax(0,1fr);gap:28px;padding-bottom:20px}
.split:has(.rail){grid-template-columns:minmax(0,1fr) 300px}
.split__main{min-width:0;max-width:840px;width:100%;margin:0 auto}
.split:has(.rail) .split__main{max-width:none}
.narrow{max-width:880px}
.paper{background:#fff;border-radius:22px;box-shadow:var(--sh);padding:32px}
.paper__cover{margin:-32px -32px 22px;border-radius:22px 22px 0 0;overflow:hidden}.paper__cover img{display:block;width:100%}
.rail{display:grid;gap:16px;align-content:start}
.rail-box{background:#fff;border-radius:16px;box-shadow:var(--sh);padding:18px}
.rail-box ul{list-style:none;margin:0;padding:0}.rail-box li{padding:7px 0;border-bottom:1px solid var(--line);font-size:15px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}.tags a{background:#e6f6f3;border-radius:999px;padding:4px 12px;font-size:14px;text-decoration:none}
.void{background:#fff;border-radius:var(--r);box-shadow:var(--sh);padding:36px;text-align:center;color:var(--mute)}
.void__e{font-size:30px;color:var(--teal-d);margin:0}
.pager{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin:28px 0 0}
.pager .page-numbers,.pager a,.pager>span{display:inline-grid;place-items:center;min-width:44px;height:44px;padding:0 12px;border-radius:999px;background:#fff;box-shadow:var(--sh);text-decoration:none;color:var(--ink)}
.pager .current{background:var(--teal-d);color:#fff}
.prose{font-size:17px;line-height:1.8;overflow-wrap:break-word}
.prose>*:first-child{margin-top:0}
.prose p{font-size:17px;margin:0 0 1.15em}
.prose h2{font-size:26px;margin:1.4em 0 .5em}.prose h3{font-size:20px;margin:1.3em 0 .45em}
.prose ul,.prose ol{padding-left:1.3em;margin:0 0 1.2em}.prose li{margin:.4em 0}.prose li::marker{color:var(--teal)}
.prose img{display:block;margin:0 auto;border-radius:14px}.prose figure{margin:1.6em 0}
.prose blockquote{margin:1.6em 0;padding:14px 20px;border-left:4px solid var(--teal);background:#effaf8;border-radius:0 12px 12px 0}
.prose iframe{width:100%;aspect-ratio:16/9;height:auto;border:0;border-radius:12px}
.em-scroll{max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;margin:1.4em 0;border-radius:12px;border:1px solid var(--line)}
.em-scroll figure{margin:0}
.prose table{width:100%;border-collapse:collapse;min-width:460px;font-size:16px}
.prose th,.prose td{padding:10px 14px;border-bottom:1px solid var(--line);text-align:left}
.prose thead th{background:#effaf8}
.vote{margin-top:24px;background:#fff;border-radius:22px;box-shadow:var(--sh);padding:24px}
.vote__head{display:flex;gap:14px;align-items:flex-start}
.vote__ic{display:grid;place-items:center;width:48px;height:48px;border-radius:50%;background:var(--sun);color:var(--ink);flex:none}
.vote__t{font-size:20px;margin:0 0 4px}.vote__s{margin:0;color:var(--mute);font-size:15px}
.vote__btns{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.vote__b{display:inline-flex;align-items:center;gap:8px;min-height:48px;padding:0 20px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:16px}
.vote__b--up:hover,.vote__b--up[aria-pressed=true]{border-color:var(--teal);background:#e6f6f3;color:var(--teal-d)}
.vote__b--down:hover,.vote__b--down[aria-pressed=true]{border-color:var(--pink);background:#fff1f2;color:#be123c}
.vote__b:disabled{cursor:default}
.vote__form{display:grid;gap:10px;margin-top:16px;max-width:620px}
.vote__form textarea{width:100%;border:1px solid var(--line);border-radius:14px;padding:12px;font-size:16px}
.vote__form .btn-p{justify-self:start}
.vote__thx{margin:14px 0 0;color:var(--teal-d);font-weight:600}
.replies{margin-top:24px}
.replies__list,.replies__list .children{list-style:none;margin:0;padding:0}
.replies__list article{padding:14px 0;border-bottom:1px solid var(--line)}
.comment-form{display:grid;gap:12px}.comment-form p{margin:0}
.comment-form input[type=text],.comment-form input[type=email],.comment-form input[type=url],.comment-form textarea{width:100%;border:1px solid var(--line);border-radius:12px;padding:11px 12px;font-size:16px}
.seek{display:flex;background:#fff;border:1px solid var(--line);border-radius:999px;overflow:hidden;max-width:560px;margin-top:10px}
.seek input{flex:1;min-width:0;border:0;outline:0;padding:11px 16px;font-size:16px}
.seek button{width:52px;border:0;background:var(--teal-d);color:#fff;display:grid;place-items:center}
.lost{text-align:center;max-width:680px;padding-top:30px}
.lost .crumbs ol{justify-content:center}
.lost__code{font-size:52px;font-weight:600;color:var(--teal-d);margin:10px 0}
.lost .seek{margin:18px auto}
.lost__acts{display:flex;justify-content:center}
/* footer */
.ft{margin-top:64px;background:#fff;border-top:1px solid var(--line);padding-top:36px}
.ft__grid{display:grid;grid-template-columns:1.3fr 1fr 1.3fr;gap:28px}
.ft__txt{font-size:15px;color:var(--mute);margin:10px 0 0}
.ft__h{font-size:16px;margin:4px 0 10px}
.ft__list{list-style:none;margin:0;padding:0;display:grid;gap:6px;font-size:15px}
.ft__list--2{grid-template-columns:1fr 1fr}
.ft__list a{color:var(--mute);text-decoration:none}.ft__list a:hover{color:var(--teal-d)}
.ft__copy{border-top:1px solid var(--line);margin-top:26px;padding-top:14px;padding-bottom:20px;font-size:14px;color:var(--mute)}
.toast{position:fixed;left:50%;bottom:calc(100px + env(safe-area-inset-bottom));z-index:95;background:var(--ink);color:#fff;border-radius:999px;padding:9px 16px;font-size:15px;transform:translate(-50%,20px);opacity:0;pointer-events:none;transition:transform .25s,opacity .25s;max-width:calc(100% - 32px);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.toast.show{transform:translate(-50%,0);opacity:1}
/* bubble bar */
.bub{display:none}
.more{position:fixed;inset:0;z-index:90}
.more__bg{position:absolute;inset:0;background:rgba(23,49,45,.4)}
.more__panel{position:absolute;left:10px;right:10px;bottom:calc(96px + env(safe-area-inset-bottom));background:#fff;border-radius:24px;padding:16px;animation:up .22s ease-out}
@media (min-width:900px){.more__panel{left:50%;right:auto;bottom:auto;top:14vh;width:460px;transform:translateX(-50%);animation:none}}
.more__top{display:flex;justify-content:space-between;align-items:center;font-size:18px;margin-bottom:6px}
.more__x{width:44px;height:44px;border:0;border-radius:12px;background:var(--bg);display:grid;place-items:center}
.more__list{list-style:none;margin:0 0 12px;padding:0}
.more__list a{display:flex;align-items:center;gap:12px;padding:12px 4px;border-bottom:1px solid var(--line);color:var(--ink);text-decoration:none}
.more__list .ic{color:var(--teal)}
.more .seek{max-width:none}
@keyframes up{from{transform:translateY(24px);opacity:0}}
@media (max-width:1024px){.posts{grid-template-columns:repeat(2,1fr)}.how{grid-template-columns:1fr}.how__art{display:none}.split:has(.rail){grid-template-columns:minmax(0,1fr)}}
@media (max-width:899px){
body{padding-bottom:calc(92px + env(safe-area-inset-bottom))}
.bar__nav,.bar__cta span{display:none}
.bar__cta{margin-left:auto;width:44px;height:44px;padding:0;justify-content:center}
.ft__grid{grid-template-columns:1fr}
.bub{display:flex;position:fixed;z-index:60;left:10px;right:10px;bottom:calc(10px + env(safe-area-inset-bottom));height:66px;background:#fff;border-radius:33px;box-shadow:0 10px 30px -10px rgba(15,118,110,.45),0 0 0 1px var(--line);padding:0 6px;align-items:center}
.bub__i{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;height:56px;border:0;border-radius:28px;background:none;color:var(--mute);text-decoration:none;font-size:12px;min-width:0}
.bub__i.on{color:var(--teal-d);background:#e6f6f3}
.bub__face{flex:none;display:grid;place-items:center;width:70px;height:70px;margin:-30px 4px 0;border-radius:50%;background:var(--sun);font-size:36px;text-decoration:none;border:5px solid var(--bg);box-shadow:0 10px 20px -8px rgba(202,138,4,.7);transition:transform .25s}
.bub__face:active{transform:scale(.9) rotate(-10deg)}
}
@media (max-width:640px){
:root{--g:16px}
.hero{padding-top:26px}
.grp,.chips,.how,.faqs details,.vote,.paper,.void{border-radius:0;box-shadow:none;margin-left:calc(-1*var(--g));margin-right:calc(-1*var(--g));padding-left:var(--g);padding-right:var(--g)}
.groups{gap:1px;background:var(--line)}
.faqs{gap:1px;background:var(--line)}
.grid{grid-template-columns:repeat(auto-fill,minmax(48px,1fr))}
.posts{grid-template-columns:1fr;gap:0}
.post-c{flex-direction:row;border-radius:0;box-shadow:none;background:none;border-bottom:1px solid var(--line);padding:12px 0;gap:12px}
.post__img{width:104px;flex:none;aspect-ratio:1;border-radius:12px}
.post__body{padding:0}
.paper{padding-top:20px;padding-bottom:20px}
.paper__cover{margin:-20px calc(-1*var(--g)) 18px;border-radius:0}
.em-scroll{margin-left:calc(-1*var(--g));margin-right:calc(-1*var(--g));border-radius:0;border-left:0;border-right:0}
.crumbs span{max-width:24ch}
}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

@media (min-width:900px){.ft__grid{grid-template-columns:1.3fr 1fr 1.3fr 1fr}}

/* Plan v2: bảng ý nghĩa */
.et-sub{color:#5b5348;margin:0 0 14px}
.et-tbl{overflow-x:auto;-webkit-overflow-scrolling:touch;background:#fff;border:1px solid #f1e6d6;border-radius:20px;margin:0 0 18px}
.et-tbl table{width:100%;min-width:600px;border-collapse:collapse;font-size:16px}
.et-tbl th,.et-tbl td{padding:9px 12px;border-bottom:1px solid #f6ede0;text-align:left;vertical-align:middle}
.et-tbl thead th{background:#fff4e8;font-weight:700}
.et-tbl .et-e{width:48px;height:48px}
.et-fig{margin:10px 0 18px}.et-fig img{width:100%;max-width:560px;height:auto;aspect-ratio:1/1;border-radius:20px;display:block}