/* /blog/ and /blog/<slug>/ — "chọn tình huống": the head is the decision (headline + keyword search beside four situation tiles = the reading paths),
   then one card grid that the tiles / search filter in place (blog.js re-sizes the cards for every filter and viewport), then the lead form.
   Prefix bm-. Loaded after pages.css, covers.css and lead-form.css; colours come from the pages.css tokens so every theme restyles it.
   The article head (art-hero, ah-*) lives at the end. */
.bm-wide{position:relative;z-index:1;width:min(1220px,100%);margin:0 auto;padding:0 5%}

/* ---------- head: headline + search | four situation tiles ---------- */
.bm-top{position:relative;padding:clamp(92px,9vw,116px) 0 clamp(26px,3.4vw,44px);overflow-x:clip;
  background:radial-gradient(52% 74% at 82% 42%,var(--accent-glow),#0000 72%),radial-gradient(38% 50% at 0 100%,color-mix(in srgb,var(--cyan) 10%,#0000),#0000 74%)}
.bm-top::before{content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;background-image:radial-gradient(var(--edge-strong) 1.2px,#0000 1.4px);background-size:26px 26px;-webkit-mask-image:radial-gradient(60% 70% at 80% 42%,#000,#0000 76%);mask-image:radial-gradient(60% 70% at 80% 42%,#000,#0000 76%)}
.bm-top .crumbs{margin-bottom:26px}
.bm-hero{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:clamp(28px,4.4vw,64px);align-items:center}
.bm-copy{min-width:0}
.bm-copy h1{margin:0;font-size:clamp(34px,4.1vw,56px);line-height:1.08;font-weight:600;letter-spacing:-.04em;text-wrap:balance}
.bm-copy h1 em{display:block;font-style:normal;color:var(--accent)}
.bm-copy .lead{margin-top:18px;max-width:34ch;font-size:clamp(15.5px,1.4vw,17px)}

.bm-find{max-width:480px;margin-top:clamp(22px,2.6vw,32px)}
.bm-search{display:flex;align-items:center;gap:12px;padding:0 10px 0 20px;border-style:solid;border-width:1px;border-color:var(--edge-strong);border-radius:999px;background:var(--surface);transition:border-color .2s,box-shadow .25s}
.bm-search:focus-within{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-bg)}
.bm-search .ico{flex:none;width:19px;height:19px;color:var(--accent)}
.bm-search input{flex:1;min-width:0;padding:16px 0;border:0;outline:0;background:none;font:inherit;font-size:15px;color:var(--text)}
.bm-search input::placeholder{color:var(--text-4)}
.bm-search input::-webkit-search-cancel-button{display:none}
.bm-kbd{flex:none;display:grid;place-items:center;width:26px;height:26px;margin-right:8px;border-style:solid;border-width:1px;border-color:var(--edge-strong);border-radius:8px;font-size:12px;font-weight:600;line-height:1;color:var(--text-4)}
.bm-search:focus-within .bm-kbd,.bm-search.has-value .bm-kbd{display:none}
.bm-x{flex:none;display:grid;place-items:center;width:30px;height:30px;margin-right:2px;padding:0;border:0;border-radius:50%;background:var(--accent-bg);font:inherit;font-size:19px;line-height:1;color:var(--accent);cursor:pointer;transition:background .2s}
.bm-x[hidden]{display:none}
.bm-x:hover{background:var(--accent-line)}
.bm-try{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:14px 0 0;font-size:13px;color:var(--text-4)}
.bm-kw{padding:6px 13px;border-style:solid;border-width:1px;border-color:var(--edge-strong);border-radius:999px;background:none;font:inherit;font-size:13px;color:var(--text-2);cursor:pointer;transition:color .2s,border-color .2s,transform .2s var(--ease)}
.bm-kw:hover{color:var(--text);border-color:var(--accent);transform:translateY(-1px)}

.bm-goals{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;min-width:0}
/* without JavaScript the tiles and the search do nothing: hide them and keep the full article list */
html:not(.pw-js) :is(.bm-goals,.bm-find,.bm-clear){display:none}
html:not(.pw-js) .bm-hero{grid-template-columns:minmax(0,1fr)}
.bm-goal{position:relative;display:flex;flex-direction:column;gap:6px;min-width:0;padding:18px 20px 16px;text-align:left;font:inherit;color:inherit;cursor:pointer;border-style:solid;border-width:1px;border-color:var(--accent-line);border-radius:22px;background:radial-gradient(240px circle at 100% 0,var(--accent-glow),#0000 72%),var(--surface);transition:transform .3s var(--ease),border-color .25s,box-shadow .3s,background .25s}
.bm-goal:hover{transform:translateY(-4px);border-color:var(--accent);box-shadow:0 26px 50px -28px #000c,0 0 34px -16px var(--accent-glow)}
.bm-goal:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
.bm-goal[aria-pressed=true]{border-color:var(--accent);background:radial-gradient(300px circle at 100% 0,var(--accent-glow),#0000 72%),linear-gradient(var(--accent-bg),var(--accent-bg)),var(--surface);box-shadow:0 0 0 1px var(--accent),0 28px 56px -26px #000c,0 0 44px -14px var(--accent-glow)}
.bm-goal-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:8px}
.bm-goal-ico{display:grid;place-items:center;width:40px;height:40px;border-style:solid;border-width:1px;border-color:var(--accent-line);border-radius:13px;background:var(--accent-bg);color:var(--accent);transition:background .25s,color .25s}
.bm-goal-ico .ico{width:21px;height:21px}
.bm-goal[aria-pressed=true] .bm-goal-ico{background:var(--accent);border-color:var(--accent);color:var(--btn-text)}
.bm-goal-top small{font-size:12px;color:var(--text-4)}
.bm-goal-title{font-size:clamp(15.5px,1.3vw,17.5px);font-weight:600;line-height:1.3;letter-spacing:-.015em;color:var(--text)}
.bm-goal-hint{display:-webkit-box;overflow:hidden;font-size:13px;line-height:1.55;color:var(--text-2);-webkit-line-clamp:2;-webkit-box-orient:vertical}
.bm-goal-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:12px}
.bm-goal-steps{display:flex;align-items:center}
.bm-goal-steps i{position:relative;display:grid;place-items:center;width:22px;height:22px;border-style:solid;border-width:1.5px;border-color:var(--accent);border-radius:50%;background:var(--bg);font-size:11px;font-style:normal;font-weight:700;color:var(--accent)}
.bm-goal-steps i+i{margin-left:14px}
.bm-goal-steps i+i::before{content:"";position:absolute;right:100%;top:50%;width:14px;height:1.5px;background:var(--accent);opacity:.65}
.bm-goal-read{font-size:12px;font-weight:500;color:var(--text-4)}
.bm-goal-read:empty{display:none}
.bm-goal-read.is-all{color:var(--accent)}

@media (prefers-reduced-motion:no-preference){
  .bm-copy>*,.bm-goal{animation:bm-in .8s var(--ease) both}
  .bm-copy h1{animation-delay:.07s}
  .bm-copy .lead{animation-delay:.14s}
  .bm-find{animation-delay:.2s}
  .bm-goal:nth-child(1){animation-delay:.1s}
  .bm-goal:nth-child(2){animation-delay:.17s}
  .bm-goal:nth-child(3){animation-delay:.24s}
  .bm-goal:nth-child(4){animation-delay:.31s}
}
@keyframes bm-in{from{opacity:0;translate:0 18px}to{opacity:1;translate:0 0}}

/* ---------- list bar + cards ---------- */
.bm-list{padding:clamp(12px,2vw,24px) 0 clamp(52px,6vw,88px)}
.bm-bar{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;padding-top:24px;border-top:1px solid var(--edge);scroll-margin-top:84px}
.bm-bar h2{margin:0;font-size:clamp(22px,2.4vw,30px);font-weight:600;line-height:1.2;letter-spacing:-.025em}
.bm-count{margin:6px 0 0;font-size:13.5px;color:var(--text-4)}
.bm-clear{flex:none;display:inline-flex;align-items:center;gap:8px;padding:9px 18px;border-style:solid;border-width:1px;border-color:var(--edge-strong);border-radius:999px;background:none;font:inherit;font-size:13.5px;color:var(--text-2);cursor:pointer;transition:color .2s,border-color .2s}
.bm-clear[hidden]{display:none}
.bm-clear i{font-size:17px;font-style:normal;line-height:1}
.bm-clear:hover{color:var(--text);border-color:var(--accent)}

.bm-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:22px}
.bm-grid[hidden]{display:none}
.bm-card{grid-column:span 2;display:flex;min-width:0;transition:opacity .6s var(--ease) calc(var(--i,0) * 80ms),transform .6s var(--ease) calc(var(--i,0) * 80ms)}
.bm-card[hidden]{display:none}
.bm-card.is-big{grid-column:span 3}
.bm-card.is-solo,.bm-card.is-wide{grid-column:1/-1}
.bm-link{position:relative;display:flex;flex-direction:column;flex:1;min-width:0;overflow:hidden;border-style:solid;border-width:1px;border-color:var(--card-line);border-radius:22px;background:var(--surface);transition:transform .3s var(--ease),border-color .3s,box-shadow .3s}
.bm-link::after{content:"";position:absolute;left:0;right:0;bottom:0;z-index:2;height:3px;background:linear-gradient(90deg,var(--accent),color-mix(in srgb,var(--accent) 12%,#0000));transform:scaleX(.14);transform-origin:left;transition:transform .45s var(--ease)}
.bm-link:hover,.bm-link:focus-visible{transform:translateY(-4px);border-color:var(--accent-line);box-shadow:0 30px 60px -28px #000c,0 0 0 1px var(--accent-bg)}
.bm-link:hover::after,.bm-link:focus-visible::after{transform:none}
.bm-link:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.bm-cover{position:relative;display:block;flex:none;aspect-ratio:16/10;border-bottom:1px solid var(--card-line)}
.bm-cover .cv-wrap{position:absolute;inset:0}
.bm-cover .cv{transition:transform .5s var(--ease)}
.bm-link:hover .bm-cover .cv{transform:scale(1.045)}
.bm-new,.bm-step{position:absolute;left:12px;top:12px;z-index:1;padding:4px 12px;border-style:solid;border-width:1px;border-color:var(--accent-line);border-radius:999px;background:color-mix(in srgb,var(--bg-night) 78%,#0000);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);font-size:12px;font-style:normal;font-weight:600;letter-spacing:.04em;color:var(--accent)}
.bm-new[hidden],.bm-step:empty{display:none}
.bm-body{display:flex;flex-direction:column;flex:1;gap:10px;min-width:0;padding:18px 20px 16px}
.bm-cat{display:inline-flex;align-items:center;gap:9px;font-size:11px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.bm-cat i{flex:none;width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px var(--accent-bg)}
.bm-body h3{display:-webkit-box;margin:0;overflow:hidden;font-size:clamp(16.5px,1.45vw,19px);font-weight:600;line-height:1.38;letter-spacing:-.015em;text-wrap:balance;-webkit-line-clamp:3;-webkit-box-orient:vertical}
.bm-body p{display:-webkit-box;margin:0;overflow:hidden;font-size:14px;line-height:1.65;color:var(--text-2);-webkit-line-clamp:2;-webkit-box-orient:vertical}
.bm-foot{display:flex;align-items:center;flex-wrap:wrap;gap:4px 14px;margin-top:auto;padding-top:14px;border-top:1px dashed var(--edge-strong);font-size:12px;color:var(--text-4)}
.bm-foot .bm-min{display:inline-flex;align-items:center;gap:5px}
.bm-foot .ico{width:12px;height:12px;color:var(--accent)}
.bm-foot b{display:inline-flex;align-items:center;gap:5px;margin-left:auto;font-weight:600;color:var(--accent)}
.bm-foot b i{font-style:normal;transition:transform .3s var(--ease)}
.bm-link:hover .bm-go i{transform:translateX(5px)}
.bm-done{display:none!important}
.bm-card.is-read .bm-go{display:none}
.bm-card.is-read .bm-done{display:inline-flex!important}

/* big cards (the two newest while nothing is filtered) */
.bm-card.is-big .bm-body{gap:12px;padding:22px 26px 20px}
.bm-card.is-big .bm-body h3{font-size:clamp(20px,2vw,26px)}
.bm-card.is-big .bm-body p{font-size:15px;-webkit-line-clamp:3}
/* a card that fills a whole row lies down: cover left, text right */
.bm-card:is(.is-solo,.is-wide) .bm-link{flex-direction:row}
.bm-card:is(.is-solo,.is-wide) .bm-cover{flex:0 0 42%;aspect-ratio:auto;min-height:230px;border-bottom:0;border-right:1px solid var(--card-line)}
.bm-card:is(.is-solo,.is-wide) .bm-body{justify-content:center;padding:26px 34px}
.bm-card:is(.is-solo,.is-wide) .bm-body h3{font-size:clamp(20px,2vw,26px)}
.bm-card:is(.is-solo,.is-wide) .bm-body p{font-size:15px;-webkit-line-clamp:3}
.bm-card:is(.is-solo,.is-wide) .bm-foot{margin-top:6px}

.bm-empty{display:grid;justify-items:center;gap:10px;padding:56px 20px;text-align:center;border-style:dashed;border-width:1px;border-color:var(--edge-strong);border-radius:22px}
.bm-empty[hidden]{display:none}
.bm-empty .ico{width:34px;height:34px;color:var(--accent)}
.bm-empty h3{margin:0;font-size:20px}
.bm-empty p{margin:0;max-width:44ch;font-size:14px;color:var(--text-2)}
.bm-reset{margin-top:8px;padding:11px 22px;border-style:solid;border-width:1px;border-color:var(--accent);border-radius:999px;background:none;font:inherit;font-size:14px;font-weight:600;color:var(--accent);cursor:pointer;transition:background .2s,color .2s}
.bm-reset:hover{background:var(--accent);color:var(--btn-text)}
.bm-reset:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* ---------- lead form (index + article) ---------- */
.bm-lead{position:relative;padding:clamp(56px,7vw,104px) 0 clamp(72px,8vw,120px);overflow-x:clip}
.bm-lead::before{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(50% 60% at 82% 55%,var(--accent-glow),#0000 72%),radial-gradient(34% 40% at 6% 20%,color-mix(in srgb,var(--cyan) 9%,#0000),#0000 72%)}
.bm-lead-card{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(32px,5vw,72px);align-items:center}
.bm-lead-copy{min-width:0}
.bm-lead-copy h2{margin:0;font-size:clamp(28px,3.3vw,46px);line-height:1.06;font-weight:600;letter-spacing:-.035em;text-wrap:balance}
.bm-lead-copy h2 em{display:block;font-style:normal;color:var(--accent)}
.bm-lead-copy .lead{max-width:34ch;margin-top:20px;font-size:clamp(15.5px,1.4vw,17px)}
.bm-lead-copy .lf-row-ch{justify-content:flex-start;margin-top:28px}
.bm-lead-form{min-width:0}

/* ---------- article head: copy + cover ---------- */
.art-hero{padding:128px 0 56px;background:radial-gradient(56% 90% at 88% 30%,var(--accent-glow),#0000 72%),linear-gradient(#0000 72%,var(--bg))}
.ah-grid{display:grid;grid-template-columns:minmax(0,1.18fr) minmax(0,.82fr);gap:52px;align-items:center}
.ah-copy{min-width:0}
.ah-cover{position:relative;margin:0;aspect-ratio:16/10.2;overflow:hidden;border:1px solid var(--accent-line);border-radius:22px;box-shadow:var(--card-shadow)}
.ah-cover .cv-wrap{position:absolute;inset:0}
.art-hero+.lp-section{padding-top:56px}

@media (max-width:1000px){
  .bm-hero,.bm-lead-card{grid-template-columns:minmax(0,1fr);gap:30px}
  .bm-copy .lead,.bm-lead-copy .lead{max-width:48ch}
  .bm-find{max-width:560px}
  .bm-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
  .bm-card,.bm-card.is-big{grid-column:auto}
  .bm-card.is-solo,.bm-card.is-wide{grid-column:1/-1}
}
@media (max-width:900px){
  .ah-grid{grid-template-columns:minmax(0,1fr);gap:30px}
  .ah-cover{max-width:520px}
}
@media (max-width:700px){
  .bm-card:is(.is-solo,.is-wide) .bm-link{flex-direction:column}
  .bm-card:is(.is-solo,.is-wide) .bm-cover{flex:none;aspect-ratio:16/10;min-height:0;border-right:0;border-bottom:1px solid var(--card-line)}
  .bm-card:is(.is-solo,.is-wide) .bm-body{padding:18px 20px 16px}
}
/* phone: situations become one compact list, articles become thumbnail rows */
@media (max-width:600px){
  .bm-top{padding-top:88px}
  .bm-goals{grid-template-columns:minmax(0,1fr);gap:10px}
  .bm-goal{display:grid;grid-template-columns:42px minmax(0,1fr);column-gap:14px;row-gap:2px;align-items:start;padding:14px 16px;border-radius:18px}
  .bm-goal-top{display:contents}
  .bm-goal-ico{grid-column:1;grid-row:1/4;width:42px;height:42px}
  .bm-goal-title{grid-column:2;grid-row:1}
  .bm-goal-hint{grid-column:2;grid-row:2}
  .bm-goal-top small{grid-column:2;grid-row:3;margin-top:2px}
  .bm-goal-foot{display:none}
  .bm-kbd{display:none}
  .bm-bar{padding-top:18px}
  .bm-clear{padding:8px 14px}
  .bm-grid{grid-template-columns:minmax(0,1fr);gap:12px}
  .bm-card,.bm-card.is-big,.bm-card.is-solo,.bm-card.is-wide{grid-column:auto}
  .bm-link,.bm-card:is(.is-solo,.is-wide) .bm-link{flex-direction:row;align-items:center;gap:14px;padding:12px;border-radius:18px}
  .bm-cover,.bm-card:is(.is-solo,.is-wide) .bm-cover{flex:0 0 112px;align-self:flex-start;overflow:hidden;aspect-ratio:16/10;min-height:0;border-style:solid;border-width:1px;border-color:var(--card-line);border-radius:12px}
  .bm-new,.bm-step{left:-1px;top:-1px;padding:2px 8px 3px;border-width:0;border-radius:11px 0 9px 0;font-size:10.5px}
  .bm-try{flex-wrap:nowrap;margin:7px -5% -7px 0;padding:7px 5% 7px 0;overflow-x:auto;scrollbar-width:none}
  .bm-kw{position:relative}
  .bm-kw:before{content:"";position:absolute;inset:-7px -2px}
  .bm-try::-webkit-scrollbar{display:none}
  .bm-try>*{flex:none}
  .bm-body,.bm-card.is-big .bm-body,.bm-card:is(.is-solo,.is-wide) .bm-body{align-self:stretch;gap:6px;padding:0;justify-content:center}
  .bm-body p,.bm-foot time{display:none}
  .bm-body h3,.bm-card.is-big .bm-body h3,.bm-card:is(.is-solo,.is-wide) .bm-body h3{font-size:15px;line-height:1.4}
  .bm-cat{font-size:10px;letter-spacing:.1em}
  .bm-foot,.bm-card:is(.is-solo,.is-wide) .bm-foot{margin-top:2px;padding-top:0;border-top:0}
  .bm-link::after{display:none}
}
@media (prefers-reduced-motion:reduce){
  .bm-card,.bm-link,.bm-link::after,.bm-cover .cv,.bm-foot b i,.bm-goal,.bm-goal-ico,.bm-kw{transition:none}
  .bm-link:hover,.bm-link:focus-visible,.bm-link:hover .bm-cover .cv,.bm-link:hover .bm-go i,.bm-goal:hover,.bm-kw:hover{transform:none}
}