:root{--cream:#FFF7EC;--paper:#FFFDF9;--peach:#FFD9C7;--coral:#FF8A73;--coral-d:#EF6A52;--mint:#BDEBD9;--sun:#FFE08A;--sky:#CDE7FF;--lav:#E6DCFF;--ink:#3B2F4A;--muted:#7B6D87;
  --fh:'Baloo 2','Nunito',system-ui,sans-serif;--fb:'Nunito',system-ui,-apple-system,'Segoe UI',sans-serif}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{font-size:17px;-webkit-text-size-adjust:100%}
body{margin:0;min-height:100dvh;font-family:var(--fb);font-weight:600;color:var(--ink);line-height:1.6;padding-bottom:calc(76px + env(safe-area-inset-bottom,0px));background:
 radial-gradient(circle at 6% 12%,var(--sun) 0 56px,transparent 57px),radial-gradient(circle at 96% 28%,var(--lav) 0 50px,transparent 51px),
 radial-gradient(circle at 4% 80%,var(--peach) 0 70px,transparent 71px),radial-gradient(circle at 96% 94%,var(--mint) 0 90px,transparent 91px),var(--cream);background-attachment:fixed}
h1,h2,h3{font-family:var(--fh);line-height:1.2;margin:0 0 .45em;font-weight:800}
p{margin:0 0 .8em}ul,ol{margin:0 0 .8em}
a{color:inherit}
:focus-visible{outline:3px solid var(--coral);outline-offset:3px;border-radius:10px}
/* thanh trên */
.top{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 14px;background:var(--cream);border-bottom:2px solid #fff}
.brand{display:flex;align-items:center;gap:8px;text-decoration:none;font-family:var(--fh);font-size:1.15rem}
.brand img{width:40px;height:40px;border-radius:50%;border:2px solid #fff;box-shadow:0 2px 0 rgba(59,47,74,.18);object-fit:cover}
.reg{padding:8px 16px;border-radius:99px;border:2.5px solid var(--ink);background:var(--coral);box-shadow:0 3px 0 var(--ink);font-family:var(--fh);font-weight:800;text-decoration:none;font-size:.95rem;white-space:nowrap}
/* menu: dưới đáy trên điện thoại */
.menu{position:fixed;left:0;right:0;bottom:0;z-index:30;display:grid;grid-template-columns:repeat(5,1fr);padding:6px 6px calc(6px + env(safe-area-inset-bottom,0px));background:var(--paper);border-top:2px solid #fff;box-shadow:0 -6px 20px rgba(59,47,74,.08)}
.menu a{display:flex;flex-direction:column;align-items:center;gap:1px;padding:6px 2px;border-radius:16px;text-decoration:none;font-size:11.5px;font-weight:800;line-height:1.15;text-align:center;color:var(--muted)}
.menu a i{font-style:normal;font-size:1.35rem}
.menu a.on{background:var(--sun);color:var(--ink)}
/* nội dung */
.page{max-width:1020px;margin:0 auto;padding:18px 16px 8px}
.ptitle{font-size:1.9rem;margin:.3em 0 .35em}
.intro{font-size:1.05rem}
.sec{font-size:1.45rem;margin:1.4em 0 .6em}
.card{background:var(--paper);border:2px solid #fff;border-radius:26px;padding:18px 18px 8px;margin:16px 0;box-shadow:0 4px 0 rgba(59,47,74,.12),0 10px 26px rgba(59,47,74,.07)}
.card>h2{font-size:1.3rem}
.card h3{font-size:1.05rem;margin-top:.5em}
.note{font-size:.88rem;color:var(--muted);padding:8px 12px;border-left:4px solid var(--sun);background:rgba(255,224,138,.25);border-radius:0 12px 12px 0}
.src{font-size:.82rem;color:var(--muted)}.src a{text-decoration:underline}
.ticks{list-style:none;padding:0}.ticks li{position:relative;padding-left:1.7em;margin:0 0 .5em}
.ticks li::before{content:"✔";position:absolute;left:0;top:0;color:var(--coral-d);font-weight:800}
.steps{list-style:none;counter-reset:s;padding:0}
.steps li{counter-increment:s;position:relative;padding:2px 0 0 2.5em;margin:0 0 .75em;min-height:2em}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:1.9em;height:1.9em;border-radius:50%;background:var(--mint);border:2px solid var(--ink);display:grid;place-items:center;font-family:var(--fh);font-weight:800;font-size:.95rem}
.steps.s li::before{background:var(--sun)}
.btn{display:flex;align-items:center;justify-content:center;gap:8px;min-height:56px;padding:10px 22px;margin:14px 0 10px;border-radius:99px;border:2.5px solid var(--ink);background:var(--coral);box-shadow:0 5px 0 var(--ink);font-family:var(--fh);font-weight:800;font-size:1.08rem;text-decoration:none;line-height:1.2;text-align:center;transition:transform .12s,box-shadow .12s}
.btn:active{transform:translateY(4px);box-shadow:0 1px 0 var(--ink)}
.btn.alt{background:var(--sky)}
.cta-row{margin:0 0 6px}
.lead a,.intro a,.card p a{text-decoration:none;border-bottom:2px solid var(--coral);font-weight:800}
/* trang chủ */
.hero{display:grid;gap:14px;justify-items:center;text-align:center;padding-top:6px}
.hero .ava{width:170px;height:170px;border-radius:50%;border:4px solid #fff;box-shadow:0 5px 0 rgba(59,47,74,.12),0 14px 30px rgba(59,47,74,.14);object-fit:cover}
.hero h1{font-size:2.2rem}
.hero h1 em{font-style:normal;color:var(--coral-d)}
.lead{font-size:1.02rem;margin-bottom:.8em}
.lead a{text-decoration:none;border-bottom:2px solid var(--coral);font-weight:800}
.grid4{display:grid;gap:12px}
.tile{display:grid;grid-template-columns:auto 1fr;gap:2px 14px;align-items:center;padding:16px;border:2.5px solid var(--ink);border-radius:22px;box-shadow:0 5px 0 var(--ink);text-decoration:none;transition:transform .12s,box-shadow .12s}
.tile:active{transform:translateY(4px);box-shadow:0 1px 0 var(--ink)}
.tile i{grid-row:span 2;font-style:normal;font-size:2.1rem}
.tile b{font-family:var(--fh);font-size:1.12rem;line-height:1.2}
.tile small{font-size:.86rem;font-weight:700;opacity:.8;line-height:1.3}
.t1{background:var(--mint)}.t2{background:var(--sky)}.t3{background:var(--peach)}.t4{background:var(--lav)}
/* hai cột */
.two{display:grid;gap:14px}
.two.big{gap:0}
.box{border:2.5px solid var(--ink);border-radius:20px;padding:14px 14px 4px;margin-bottom:14px}
.b1{background:var(--mint)}.b2{background:var(--sky)}
.box h3{margin-top:0}
.cd1{border-top:8px solid var(--mint)}.cd2{border-top:8px solid var(--peach)}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:6px 0 14px}
.stats div{background:var(--sun);border:2.5px solid var(--ink);border-radius:18px;padding:10px 12px;box-shadow:0 3px 0 var(--ink)}
.stats div:nth-child(2){background:var(--mint)}.stats div:nth-child(3){background:var(--sky)}.stats div:nth-child(4){background:var(--lav)}
.stats b{display:block;font-family:var(--fh);font-size:1.5rem;line-height:1.1}
.stats span{font-size:.8rem;line-height:1.3;display:block}
.time{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:8px;margin:6px 0 12px}
.time div{background:var(--lav);border:2px solid var(--ink);border-radius:16px;padding:8px 10px}
.time b{display:block;font-family:var(--fh);font-size:1.3rem}.time span{font-size:.85rem;line-height:1.3;display:block}
/* đối tượng */
.grps{display:grid;gap:12px;margin:14px 0}
.grp{display:flex;gap:14px;padding:14px;border:2.5px solid var(--ink);border-radius:22px;box-shadow:0 4px 0 var(--ink)}
.grp>i{font-style:normal;font-size:2.2rem;flex:none}
.grp h3{margin:0 0 2px;font-size:1.12rem}
.grp .who{font-size:.85rem;opacity:.8;margin-bottom:.4em}
.grp p:last-child{margin:0;font-size:.95rem}
.g1{background:var(--peach)}.g2{background:var(--mint)}.g3{background:var(--sky)}.g4{background:var(--lav)}.g5{background:var(--sun)}.g6{background:#FFE9D6}.g7{background:#D8F0C8}
/* báo chí */
.newslist{display:grid;gap:12px;margin:14px 0}
.news{display:flex;gap:14px;padding:14px;background:var(--paper);border:2.5px solid var(--ink);border-radius:22px;box-shadow:0 4px 0 var(--ink);text-decoration:none;align-items:flex-start;transition:transform .12s,box-shadow .12s}
.news:active{transform:translateY(3px);box-shadow:0 1px 0 var(--ink)}
.logo{flex:none;width:104px;min-height:56px;display:grid;place-items:center;text-align:center;padding:6px;border-radius:16px;background:var(--sun);border:2px solid var(--ink);font-family:var(--fh);line-height:1.15;font-size:1rem}
.logo img{max-width:100%;max-height:48px;object-fit:contain}
.logo.has{background:#fff}.logo.has b{display:none}
.news h3{font-size:1.05rem;margin:0 0 .3em}
.news p{font-size:.92rem;margin:0 0 .3em}
.news small{color:var(--muted);font-weight:700}
.foot{max-width:1020px;margin:14px auto 0;padding:0 18px 12px;font-size:.8rem;color:var(--muted)}
.foot p{margin:0 0 .4em}.foot a{text-decoration:underline}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}
/* máy tính */
@media (min-width:900px){
  body{padding-bottom:0}
  .top{padding:10px max(24px,calc((100vw - 1020px)/2 + 16px))}
  .menu{position:static;display:flex;gap:4px;padding:0;background:none;border:0;box-shadow:none}
  .menu a{flex-direction:row;gap:6px;padding:8px 14px;font-size:.95rem;border-radius:99px}
  .menu a i{font-size:1.05rem}
  .page{padding-top:28px}
  .hero{grid-template-columns:auto 1fr;justify-items:start;text-align:left;gap:36px;align-items:center}
  .hero .ava{width:260px;height:260px}
  .hero h1{font-size:2.8rem}
  .lead{font-size:1.05rem}
  .hero .btn{display:inline-flex;padding:10px 30px}
  .grid4{grid-template-columns:repeat(4,1fr)}
  .tile{grid-template-columns:1fr;text-align:left;padding:18px}
  .tile i{grid-row:auto}
  .two{grid-template-columns:1fr 1fr}
  .two.big{gap:16px;align-items:start}
  .stats{grid-template-columns:repeat(4,1fr)}
  .grps{grid-template-columns:1fr 1fr}
  .card{padding:22px 26px 12px}
  .btn{display:inline-flex}
  .card .btn{display:flex}
  .logo{width:130px}
}
/* ===== Bảng vinh danh ===== */
.menu{grid-template-columns:repeat(6,1fr)}
.menu a{font-size:11px}
.t5{background:var(--sun)}
.grid4{grid-template-columns:1fr}
.page.wide{max-width:1180px}
.boards{display:grid;gap:16px;margin:16px 0}
.board{position:relative;padding:18px 12px 16px;border:2.5px solid var(--ink);border-radius:28px;box-shadow:0 5px 0 var(--ink);text-align:center}
.board h2{font-size:1.3rem;margin:0}
.board .sub{font-size:.88rem;opacity:.8;margin:2px 0 14px}
.bd1{background:linear-gradient(#FFE9D6,#FFD9C7)}.bd2{background:linear-gradient(#DDF5EA,#BDEBD9)}.bd3{background:linear-gradient(#FFF3C4,#FFE08A)}
.pyr{display:grid;gap:12px}
.prow{display:flex;justify-content:center;gap:10px}
.slot{display:flex;flex-direction:column;align-items:center;gap:4px;animation:bobs 3.6s ease-in-out var(--d,0s) infinite}
.slot .av{position:relative;display:grid;place-items:center;width:64px;height:64px;border-radius:50%;background:rgba(255,255,255,.7);border:3px dashed var(--ink);font-family:var(--fh);font-weight:800;color:var(--ink);opacity:.9}
.slot .av b{opacity:.35;font-size:1.2rem}
.slot .av::after{content:"";position:absolute;inset:-9px;border-radius:50%;border:2px solid rgba(255,255,255,.9);opacity:0;animation:ring 3.6s ease-out var(--d,0s) infinite}
.slot small{font-size:.7rem;font-weight:800;opacity:.65}
.prow:first-child .slot .av{width:84px;height:84px;border-color:#E3A300}
.prow:first-child .slot .av::before{content:"👑";position:absolute;top:-24px;font-size:1.5rem;animation:wob 2.4s ease-in-out infinite}
.sprow{display:grid;grid-template-columns:repeat(5,1fr);gap:12px 6px;justify-items:center}
.slot.spn .av{width:54px;height:54px}
@keyframes bobs{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
@keyframes ring{0%{opacity:.9;transform:scale(.9)}70%,100%{opacity:0;transform:scale(1.25)}}
@keyframes wob{0%,100%{transform:rotate(-8deg)}50%{transform:rotate(8deg) translateY(-3px)}}
/* nền động */
.sky{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.cloud{position:absolute;display:block;width:120px;height:36px;background:#fff;border-radius:99px;opacity:.85;animation:drift linear infinite}
.cloud::before,.cloud::after{content:"";position:absolute;background:#fff;border-radius:50%}
.cloud::before{width:56px;height:56px;left:16px;top:-26px}.cloud::after{width:42px;height:42px;left:60px;top:-16px}
.c1{top:14%;left:-160px;animation-duration:46s}.c2{top:46%;left:-160px;animation-duration:62s;animation-delay:-24s;transform:scale(.8)}.c3{top:76%;left:-160px;animation-duration:54s;animation-delay:-40s;transform:scale(1.1)}
@keyframes drift{to{translate:calc(100vw + 340px)}}
.fl{position:absolute;width:44px;height:44px;animation:sway 7s ease-in-out infinite}
.f1{left:5%;top:22%}.f2{right:6%;top:36%;animation-delay:-2s;width:36px;height:36px}.f3{left:12%;top:68%;animation-delay:-4s;width:52px;height:52px}.f4{right:10%;top:80%;animation-delay:-1s}.f5{left:48%;top:8%;animation-delay:-3s;width:30px;height:30px}
@keyframes sway{0%,100%{transform:translateY(0) rotate(-12deg)}50%{transform:translateY(-22px) rotate(14deg)}}
.sp{position:absolute;width:26px;height:26px;animation:twinkle 2.8s ease-in-out infinite}
.s1{left:22%;top:30%}.s2{right:22%;top:18%;animation-delay:-1s}.s3{left:34%;top:88%;animation-delay:-2s}.s4{right:30%;top:60%;animation-delay:-.5s}
@keyframes twinkle{0%,100%{transform:scale(.6) rotate(0);opacity:.5}50%{transform:scale(1.15) rotate(25deg);opacity:1}}
@media (prefers-reduced-motion:reduce){.slot,.slot .av::after,.cloud,.fl,.sp,.prow:first-child .slot .av::before{animation:none!important}}
@media (min-width:900px){
  .menu a{padding:8px 11px;font-size:.9rem}
  .boards{grid-template-columns:1fr 1fr;gap:20px}
  .bd3{grid-column:1/-1}
  .board{padding:22px 18px 22px}
  .pyr{gap:18px;padding-top:6px}
  .prow{gap:16px}
  .slot .av{width:84px;height:84px}
  .prow:first-child .slot .av{width:104px;height:104px}
  .sprow{grid-template-columns:repeat(10,1fr);gap:18px 8px}
  .slot.spn .av{width:72px;height:72px}
  .grid4{grid-template-columns:repeat(5,1fr)}
}
@media (min-width:900px) and (max-width:1100px){.sprow .slot.spn .av{width:62px;height:62px}}
.brand,.menu a{white-space:nowrap}
@media (min-width:900px){.top{padding:10px 20px;gap:8px}.menu a{padding:8px 10px;font-size:.88rem;gap:5px}}
@media (min-width:900px) and (max-width:1120px){.brand b{display:inline}.menu a i{display:none}}
.hint,.hint2{font-size:.88rem;color:var(--muted);margin:8px 0 0}
.hero .hint{max-width:34em}
.t5{background:var(--sun)}
.foot{text-align:center}
.f1 span{white-space:nowrap}.f1 span+span::before{content:" | ";white-space:pre}
@media(max-width:700px){.f1 span{display:block}.f1 span+span::before{content:none}}
.sub2{margin:-6px 0 10px;color:var(--muted);font-size:.9rem}
.newslist .news{padding:12px 14px}
.newslist .logo{width:96px;min-height:48px;font-size:.88rem}
@media (min-width:900px){.newslist{grid-template-columns:1fr 1fr}.newslist .logo{width:112px}.stats{grid-template-columns:repeat(3,1fr)}}
.stats{grid-template-columns:1fr 1fr 1fr}
@media (max-width:620px){.stats{grid-template-columns:1fr 1fr}.stats div:last-child{grid-column:1/-1}}
/* ảnh */
figure{margin:0}
.banner{display:block;margin:20px 0 6px;border-radius:24px;overflow:hidden;border:3px solid #fff;box-shadow:0 4px 0 rgba(59,47,74,.12),0 12px 28px rgba(59,47,74,.1)}
.banner img,.pic img{display:block;width:100%;height:auto}
.pic{margin:16px 0;border-radius:22px;overflow:hidden;background:var(--paper);border:3px solid #fff;box-shadow:0 4px 0 rgba(59,47,74,.12),0 10px 24px rgba(59,47,74,.08)}
.pic.in{margin:6px 0 12px}
.pic figcaption{padding:8px 12px 10px;font-size:.84rem;color:var(--muted);line-height:1.4}
.split{display:grid;gap:10px;align-items:start}
.split>.intro{margin:0}
.person{display:grid;gap:14px;align-items:start}
.person h2{font-size:1.2rem;margin-top:0}
blockquote{margin:0 0 .6em;padding:2px 0 2px 14px;border-left:4px solid var(--coral);font-style:italic}
.who2{font-weight:800;font-size:.92rem}
.gallery{display:grid;gap:14px;margin:6px 0 14px;align-items:start}
.gallery .pic{margin:0}
.gallery .pic img{aspect-ratio:3/2;object-fit:cover}
@media (min-width:900px){
  .split{grid-template-columns:1fr 280px;gap:28px}
  .split .pic{margin:0}
  .person{grid-template-columns:300px 1fr;gap:26px}
  .gallery{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:900px){.split .pic.tall{max-width:230px;justify-self:end}}
.proof{margin:16px 0;padding:20px 16px;border-radius:26px;border:3px solid var(--ink);box-shadow:0 6px 0 var(--ink);background:linear-gradient(135deg,var(--sun),var(--peach));text-align:center}
.proof-k{font-family:var(--fh);font-weight:800;font-size:1.25rem;margin:0 0 12px}
.proof-n{display:grid;gap:10px}
.proof-n div{background:#fff;border-radius:20px;padding:12px;border:2.5px solid var(--ink)}
.proof-n b{display:block;font-family:var(--fh);font-size:2.4rem;line-height:1.05;color:var(--coral)}
.proof-n span{font-size:.92rem;font-weight:700;line-height:1.35;display:block}
.proof-t{margin:12px 0 0;font-weight:700}
@media(min-width:700px){.proof-n{grid-template-columns:repeat(3,1fr)}.proof-k{font-size:1.5rem}.proof{padding:26px 24px}}
.gift{position:relative;margin:16px 0;padding:20px 16px;border-radius:26px;border:3px solid var(--ink);box-shadow:0 6px 0 var(--ink);background:linear-gradient(135deg,var(--lav),var(--sky),var(--mint));text-align:center;overflow:hidden}
.gift::before,.gift::after{content:"✨";position:absolute;font-size:1.6rem;animation:tw 2.4s ease-in-out infinite}
.gift::before{top:8px;left:12px}.gift::after{bottom:8px;right:14px;animation-delay:1.2s}
@keyframes tw{0%,100%{opacity:.35;transform:scale(.8) rotate(0)}50%{opacity:1;transform:scale(1.2) rotate(12deg)}}
@media (prefers-reduced-motion:reduce){.gift::before,.gift::after{animation:none}}
.gift-t{font-family:var(--fh);font-weight:800;font-size:1.45rem;margin:0 0 6px}
.gift p{margin:6px 0}
.gift-c{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.gift-c a{background:#fff;border:2.5px solid var(--ink);border-radius:999px;padding:8px 16px;font-weight:800;text-decoration:none;color:var(--ink)}
.gift-c a.zalo{background:#0068ff;color:#fff;font-size:1.1rem;padding:12px 24px;box-shadow:0 4px 0 var(--ink)}
.gift-s{font-size:.88rem}.gift-s a{color:var(--ink);font-weight:800}
/* Góc chia sẻ */
.flipgrid{display:grid;gap:14px;margin:12px 0 18px}
.flip{perspective:1100px}
.fcd{display:grid;position:relative;transform-style:preserve-3d;transition:transform .6s}
.flip.on .fcd{transform:rotateY(180deg)}
.face{grid-area:1/1;backface-visibility:hidden;-webkit-backface-visibility:hidden;border:2.5px solid var(--ink);border-radius:22px;box-shadow:0 5px 0 var(--ink);padding:16px;background:var(--paper);display:flex;flex-direction:column;gap:6px;text-align:left;font:inherit;color:inherit;transition:visibility 0s .3s}
.front{cursor:pointer;align-items:center;text-align:center;justify-content:center;background:linear-gradient(160deg,var(--lav),var(--sky))}
.flip:nth-child(3n+2) .front{background:linear-gradient(160deg,var(--sun),var(--peach))}
.flip:nth-child(3n) .front{background:linear-gradient(160deg,var(--mint),var(--sky))}
.back{transform:rotateY(180deg);visibility:hidden;font-size:.93rem;line-height:1.5;justify-content:flex-start}
.flip.on .back{visibility:visible}.flip.on .front{visibility:hidden}
.back p{margin:0 0 .5em}.lesson{background:var(--sun);border-radius:14px;padding:8px 10px;font-weight:800}
.src{font-size:.8rem;color:var(--muted)}.src a{color:var(--ink);font-weight:800}
.flipback,.linkish{align-self:flex-start;margin-top:auto;border:2px solid var(--ink);background:#fff;border-radius:99px;padding:6px 14px;font:inherit;font-weight:800;cursor:pointer}
.ph-av{font-size:3rem;line-height:1;filter:blur(3px);opacity:.9}
.who{font-family:var(--fh);font-size:1.08rem;line-height:1.25}
.hook{font-weight:800;color:#c2452f;font-size:1.05rem}
.tap{font-size:.82rem;opacity:.75}
.ph .face{align-items:center;text-align:center;border-style:dashed;box-shadow:none;background:rgba(255,255,255,.6)}
.ph .ph-av{filter:none;opacity:.5}.ph .who,.ph .hook{opacity:.7;color:var(--ink);font-size:1rem}
.share{width:min(560px,calc(100vw - 24px));max-height:calc(100dvh - 24px);overflow:auto;border:3px solid var(--ink);border-radius:26px;padding:20px 18px;background:var(--cream);color:var(--ink);box-shadow:0 8px 0 var(--ink)}
.share::backdrop{background:rgba(59,47,74,.55)}
.share h2{margin:0 0 6px;font-family:var(--fh);font-size:1.35rem}
.sh-x{position:absolute;top:10px;right:12px;margin:0}.sh-x button{border:2px solid var(--ink);background:#fff;border-radius:50%;width:34px;height:34px;font-weight:800;cursor:pointer}
.sh-opts{display:grid;gap:10px;margin:12px 0}
.sh-o{display:flex;flex-direction:column;gap:2px;padding:12px;border:2.5px solid var(--ink);border-radius:18px;background:#fff;text-decoration:none;color:var(--ink);font-size:.92rem}
.sh-o b{font-family:var(--fh);font-size:1.05rem}
.sh-or{font-weight:800;margin:10px 0 6px}
.shf fieldset{border:0;padding:0;margin:0 0 8px;display:grid;gap:4px}.shf legend{font-weight:800;padding:0;margin-bottom:2px}
.shf textarea{width:100%;box-sizing:border-box;border:2.5px solid var(--ink);border-radius:16px;padding:10px;font:inherit;background:#fff;resize:vertical}
.chk{display:flex;gap:8px;align-items:flex-start;margin:10px 0;font-size:.9rem}.chk input{margin-top:5px}
.sh-m{font-size:.88rem;margin:8px 0 0}
@media (min-width:700px){.flipgrid{grid-template-columns:1fr 1fr}.sh-opts{grid-template-columns:1fr 1fr}}
@media (prefers-reduced-motion:reduce){.fcd{transition:none}}
@media (max-width:899px){.menu{grid-template-columns:repeat(7,1fr)}.menu a{font-size:10px;white-space:normal;padding:6px 1px}.menu a i{font-size:1.2rem}}
.bt{display:flex;flex-direction:column;line-height:1.1}
.bt small{font-family:var(--fb);font-size:.62rem;font-weight:800;color:var(--muted);letter-spacing:.01em;margin-top:2px}
@media (max-width:420px){.bt small{font-size:.56rem}}
@media (min-width:900px) and (max-width:1120px){.bt{display:none}}
.face{width:100%;box-sizing:border-box;min-width:0}
.flip{min-width:0}
.fcd{width:100%}
.flip{display:grid}.fcd{height:100%}
.share h2{padding-right:40px}
@media (max-width:380px){.top{padding:8px 8px;gap:6px}.reg{padding:8px 10px;font-size:.8rem}.brand{gap:6px}.brand img{width:34px;height:34px}.bt b{font-size:1rem}.bt small{font-size:.5rem}}
/* chỉnh lượt 27 */
.split .pic{max-width:260px;justify-self:center}
@media (min-width:900px){.split{grid-template-columns:1fr 190px;gap:24px}.split .pic{max-width:190px;justify-self:end}.split .pic.tall{max-width:160px}}
.split .pic figcaption{font-size:.74rem;padding:6px 8px 8px}
.flip .back{display:none}
.fcd{transform:none!important}
.flip .front{visibility:visible!important}
.ph .face,.ph .linkish{align-items:center}
.linkish{align-self:center;margin-top:8px}
.sec.c,.invite{text-align:center}
.invite{max-width:640px;margin:0 auto 14px;font-size:1rem}
.tap{display:block}
.story{width:min(680px,calc(100vw - 20px));max-height:calc(100dvh - 20px);overflow:auto;border:3px solid var(--ink);border-radius:28px;padding:26px 22px 20px;background:#fffdf8;color:var(--ink);box-shadow:0 8px 0 var(--ink);animation:pop .25s ease-out}
.story::backdrop{background:rgba(59,47,74,.6)}
@keyframes pop{from{opacity:0;transform:scale(.92)}to{opacity:1;transform:none}}
.story h2{font-family:var(--fh);font-size:1.5rem;line-height:1.25;margin:0 36px 4px 0}
.story .hook{font-size:1.25rem;margin:0 0 12px}
.story p{font-size:1.15rem;line-height:1.7;margin:0 0 .7em}
.story .lesson{font-size:1.1rem;padding:12px 14px}
.story .src{font-size:.9rem}
.sclose{margin-top:6px;width:100%}
@media (min-width:700px){.story{padding:30px 32px 24px}.story p{font-size:1.22rem}}
@media (prefers-reduced-motion:reduce){.story{animation:none}}