/* EngNote - Cộng đồng công khai (/cong-dong). Trang đứng riêng (không dùng notewise.css) theo thiết kế của chủ sở hữu: giao diện SÁNG cố định, phông chữ hệ thống (không dùng phông viết tay vì thiếu dấu tiếng Việt).
   Token màu lặp lại từ :root của EngNote; đổi màu thương hiệu thì sửa cả hai nơi. Trang Cộng đồng sau đăng nhập (notewise.css, khối .cd-*) cố ý có cùng ngôn ngữ thiết kế: giữ hai nơi cùng kiểu. */
:root{
  color-scheme:light;
  --paper:#fbf9f3; --card:#fffefa; --card-2:#f4f1e8; --border:#e0dacb; --line:#e8ebf1;
  --text:#2a2f38; --ink:#1e3a6e; --muted:#6b7280;
  --accent:#1f5fd6; --accent-soft:#e6eeff; --cover:#203b2e; --cover-ink:#f3efe4;
  --hl:#f9dc5c; --margin:#f1b8b8; --green:#2e8b3d; --green-soft:#e4f4e3; --amber:#c56a0c; --amber-soft:#fff1dc; --red:#cf3a3a;
  --t1:#6fa8dc; --t2:#f4d35e; --t3:#7cc47f; --t4:#f08aa8; --t5:#f6a35b; --t6:#b39ddb; --t7:#7fcfc4; --tab-ink:#1d2b44;
  --shadow:0 1px 0 rgba(0,0,0,.03),0 6px 16px rgba(60,40,10,.07);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--text);font-family:var(--font);font-size:15px;line-height:1.55}
button,input{font:inherit;color:inherit}
button{cursor:pointer}
a{color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
h1,h2,h3{color:var(--ink);text-wrap:balance}
img{max-width:100%}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:0;background:var(--card);padding:8px 12px;border-radius:0 0 8px 0;z-index:100}
.skip:focus{left:0}
svg.i{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;flex:none}
.mark{background:linear-gradient(transparent 55%,var(--hl) 55%);padding:0 2px}
.hand{font-style:italic;font-weight:800}
.wrap{max-width:1200px;margin:0 auto;padding-inline:16px}

/* header */
header.pb-hd{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:var(--paper);border-bottom:1px solid var(--border)}
.hd{display:flex;align-items:center;gap:16px;min-height:64px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:800;font-size:20px;letter-spacing:-.01em}
.logo-mark{width:34px;height:34px;border-radius:8px;background:var(--cover);display:grid;place-items:center;color:var(--cover-ink);position:relative}
.logo-mark::after{content:"";position:absolute;right:5px;top:6px;bottom:6px;width:3px;border-radius:2px;background:var(--t2)}
nav.main{display:flex;gap:4px;flex:1 0 auto;min-width:0;overflow-x:auto}
nav.main a{padding:8px 12px;border-radius:8px;text-decoration:none;color:var(--muted);font-weight:500;white-space:nowrap;display:flex;align-items:center;gap:6px}
nav.main a:hover{background:var(--card-2);color:var(--text)}
nav.main a[aria-current]{color:var(--ink);background:var(--accent-soft)}
.hd-act{display:flex;gap:8px;align-items:center}
.lang{display:inline-flex;align-items:center;justify-content:center;gap:5px;padding:0 10px;min-width:44px;height:42px;border-radius:10px;border:1px solid var(--border);background:var(--card);color:var(--muted);font-weight:700;text-decoration:none;font-size:13px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:42px;padding:0 16px;border-radius:10px;border:0;background:var(--accent);color:#fff;font-weight:600;text-decoration:none;white-space:nowrap}
.btn:hover{filter:brightness(1.07)}
.btn.line{background:var(--card);color:var(--text);border:1px solid var(--border)}
.btn.sm{height:36px;padding:0 12px;font-size:13px}
.btn.cream{background:var(--cover-ink);color:var(--cover)}

/* search */
.search{flex:1 1 260px;min-width:0;max-width:420px;display:flex;align-items:center;gap:8px;height:42px;padding:0 12px;border:1px solid var(--border);border-radius:10px;background:var(--card);color:var(--muted)}
.search:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.search input{border:0;background:none;outline:none;width:100%;min-width:0;color:var(--text)}
.search kbd{font-family:ui-monospace,Menlo,monospace;font-size:11px;padding:1px 6px;border:1px solid var(--border);border-radius:5px;color:var(--muted)}

/* hero: the notebook cover */
.hero{padding-block:28px 8px}
.cover{background:var(--cover);color:var(--cover-ink);border-radius:6px 18px 18px 6px;padding:32px clamp(20px,4vw,48px) 32px clamp(32px,5vw,64px);display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:32px;align-items:center;position:relative;box-shadow:var(--shadow)}
.cover.solo{grid-template-columns:minmax(0,1fr)}
.cover::before{content:"";position:absolute;left:14px;top:0;bottom:0;width:6px;background:repeating-linear-gradient(var(--cover-ink) 0 3px,transparent 3px 22px);opacity:.25}
.cover h1{color:var(--cover-ink);font-size:clamp(28px,4.4vw,44px);line-height:1.12;margin:6px 0 14px;letter-spacing:-.02em}
.cover h1 .hand{color:var(--t2)}
.cover p{margin:0 0 20px;opacity:.85;max-width:52ch;font-size:16px}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase}
.cover .eyebrow{color:var(--t7)}
.cover-cta{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.btn.ghost-cover{background:transparent;color:var(--cover-ink);border:1px solid rgba(243,239,228,.4)}

/* live challenge = a ruled page */
.page{background:var(--card);color:var(--text);border-radius:12px;padding:18px 18px 18px 44px;position:relative;
  background-image:repeating-linear-gradient(transparent 0 27px,var(--line) 27px 28px);background-position:0 46px;box-shadow:0 10px 30px rgba(0,0,0,.25)}
.page::before{content:"";position:absolute;left:30px;top:0;bottom:0;width:2px;background:var(--margin)}
.page-top{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:3px 10px;border-radius:99px;background:var(--card-2);color:var(--muted)}
.chip.live{background:var(--amber-soft);color:var(--amber)}
.chip.read{background:var(--green-soft);color:var(--green)}
.chip.pod{background:var(--amber-soft);color:var(--amber)}
.meta{font-size:13px;color:var(--muted)}
.timer{font-variant-numeric:tabular-nums;font-weight:700}
.sentence{font-size:22px;line-height:1.35;color:var(--ink);font-weight:600;margin:14px 0 6px;overflow-wrap:anywhere}
.gloss{font-size:14px;color:var(--muted);margin:0 0 14px}
.row{display:flex;gap:8px;flex-wrap:wrap}
.voices{display:flex;align-items:center;gap:10px;margin-top:14px;font-size:13px;color:var(--muted)}

/* pillars: bookmark tabs in EngNote colors */
.pillars{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;padding-block:28px 8px}
.pillar{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:22px 20px 20px;position:relative;box-shadow:var(--shadow)}
.pillar .tab{position:absolute;top:-1px;right:20px;width:34px;height:42px;border-radius:0 0 6px 6px;display:grid;place-items:center;color:var(--tab-ink)}
.pillar h3{margin:0 0 6px;font-size:18px;padding-right:44px}
.pillar p{margin:0;color:var(--muted);font-size:14px}

/* left categories */
.cats{position:sticky;top:84px;display:flex;flex-direction:column;gap:2px}
.cats h4{margin:14px 12px 6px;font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.cats h4:first-child{margin-top:0}
.cat{display:flex;align-items:center;gap:10px;width:100%;min-height:42px;padding:8px 12px;border:0;border-radius:10px;background:none;color:var(--text);font-weight:500;text-align:left;text-decoration:none}
.cat:hover{background:var(--card-2)}
.cat[aria-current]{background:var(--accent-soft);color:var(--accent)}
.empty{padding:28px;text-align:center;color:var(--muted)}

/* feed + rail */
.shell{display:grid;grid-template-columns:220px minmax(0,1fr) 320px;gap:24px;align-items:start;padding-block:28px 56px}
.shell.no-rail{grid-template-columns:220px minmax(0,1fr)}
.sec-hd{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:12px}
.sec-hd h1,.sec-hd h2{margin:0;font-size:22px}
.feed{display:flex;flex-direction:column;gap:16px;min-width:0}
.card{background:var(--card);border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow)}
.post{padding:16px 18px 4px;display:flex;flex-direction:column;gap:12px}
.ph{display:flex;align-items:center;gap:10px}
.av{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:13px;flex:none;color:var(--tab-ink)}
.av.bot{background:var(--cover);color:var(--cover-ink)}
.who{flex:1;min-width:0}
.who strong{color:var(--text)}
.lvl{font-size:11px;font-weight:700;padding:1px 7px;border-radius:5px;background:var(--card-2);color:var(--muted);margin-left:6px}
.who .meta a{color:inherit;text-decoration:none}
.who .meta a:hover{text-decoration:underline}
.quote{border-left:3px solid var(--margin);padding:4px 0 4px 14px;margin:0;font-size:17px;color:var(--ink);font-weight:600;overflow-wrap:anywhere}
.ptext{margin:0;overflow-wrap:anywhere;white-space:pre-wrap}
.ptext a.cd-ht{text-decoration:none;font-weight:600}
.article{display:grid;grid-template-columns:140px minmax(0,1fr);gap:14px;border:1px solid var(--border);border-left:4px solid var(--green);border-radius:10px;padding:12px;background:var(--card-2)}
.article.pod{border-left-color:var(--amber)}
.article.nopic{grid-template-columns:minmax(0,1fr)}
.thumb{aspect-ratio:4/3;border-radius:8px;overflow:hidden;background:repeating-linear-gradient(135deg,var(--line) 0 8px,var(--card) 8px 16px);align-self:start}
.thumb img{display:block;width:100%;height:100%;object-fit:cover}
.article h3{margin:4px 0;font-size:17px;line-height:1.3;color:var(--text)}
.article h3 a{color:inherit;text-decoration:none}
.article h3 a:hover{text-decoration:underline}
.article p{margin:0 0 8px;font-size:14px;color:var(--muted);overflow-wrap:anywhere}
.gal{display:grid;gap:4px;border-radius:12px;overflow:hidden}
.gal.n1{grid-template-columns:1fr}.gal.n2{grid-template-columns:1fr 1fr}.gal.n3,.gal.n4{grid-template-columns:1fr 1fr}
.gal .g{position:relative;display:block;background:var(--card-2);aspect-ratio:4/3;overflow:hidden}
.gal.n1 .g{aspect-ratio:16/10}
.gal .g img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.gal .more{position:absolute;inset:0;display:grid;place-items:center;background:rgba(0,0,0,.5);color:#fff;font-size:22px;font-weight:700}
.vtile{display:flex;align-items:center;gap:12px;border-radius:12px;background:var(--cover);color:var(--cover-ink);padding:18px;border:0;width:100%;text-align:left;text-decoration:none}
.vtile .pl{width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.18);display:grid;place-items:center;flex:none}
.acts{display:flex;gap:2px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:2px}
.act{display:inline-flex;align-items:center;gap:6px;border:0;background:none;color:var(--muted);padding:8px 10px;border-radius:8px;font-size:13px;min-height:44px;text-decoration:none}
.act:hover{background:var(--card-2);color:var(--text)}
.act.primary{color:var(--accent);font-weight:600}
.act .n{font-variant-numeric:tabular-nums}

/* pager */
.pager{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap;padding-top:6px}

/* rail */
.rail{position:sticky;top:84px;display:flex;flex-direction:column;gap:16px}
.box{padding:18px}
.box h2{font-size:17px;margin:0 0 4px}
.join{background:var(--cover);color:var(--cover-ink);border:0}
.join h2{color:var(--cover-ink)}
.join p{margin:0 0 14px;opacity:.85;font-size:14px}
.join ul{margin:0 0 16px;padding:0;list-style:none;display:flex;flex-direction:column;gap:8px;font-size:14px}
.join li{display:flex;gap:8px;align-items:flex-start}
.join li svg{color:var(--t3);margin-top:2px}
.join .btn{width:100%}
.more-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.more-list a{color:var(--text);text-decoration:none;font-size:14px}
.more-list a:hover{text-decoration:underline}

/* detail */
.crumb{font-size:13px;color:var(--muted);padding-block:18px 0}
.crumb a{color:var(--muted)}
.detail{max-width:820px;margin:0 auto;padding-block:12px 56px}
.detail .post{padding:22px 22px 6px}

footer.pb-ft{border-top:1px solid var(--border);padding-block:20px;color:var(--muted);font-size:13px}
footer.pb-ft .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* signup sheet */
.sheet-bg{position:fixed;inset:0;background:rgba(15,20,30,.5);z-index:50;display:grid;place-items:center;padding:16px}
.sheet-bg[hidden]{display:none}
.sheet{background:var(--card);border-radius:16px;max-width:420px;width:100%;padding:24px;position:relative;
  background-image:repeating-linear-gradient(transparent 0 31px,var(--line) 31px 32px);background-position:0 120px}
.sheet h2{margin:0 0 6px;font-size:22px}
.sheet p{margin:0 0 16px;color:var(--muted);font-size:14px}
.sheet .why{font-weight:700;font-size:16px;color:var(--amber);margin:0 0 12px}
.sheet .btn{width:100%;margin-top:8px}
.sheet .alt{text-align:center;font-size:13px;margin:14px 0 0;color:var(--muted)}
.x{position:absolute;top:12px;right:12px;width:40px;height:40px;border-radius:50%;border:0;background:var(--card-2);display:grid;place-items:center}

@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
@media (max-width:1180px){.shell{grid-template-columns:200px minmax(0,1fr)}.rail{grid-column:2;position:static}}
@media (max-width:860px){
  .shell,.shell.no-rail{grid-template-columns:minmax(0,1fr)}.rail{grid-column:auto}
  .cats{position:static;flex-direction:row;overflow-x:auto;gap:6px;padding-bottom:4px}
  .cats h4{display:none}
  .cat{width:auto;white-space:nowrap;border:1px solid var(--border);border-radius:99px;min-height:38px;background:var(--card)}
}
@media (max-width:820px){.cover{grid-template-columns:minmax(0,1fr)}.pillars{grid-template-columns:minmax(0,1fr)}}
@media (max-width:600px){
  .hd{gap:8px;padding-block:8px}
  nav.main{order:4;flex:1 1 100%}
  .search{order:3;flex-basis:100%;max-width:none}
  .article{grid-template-columns:minmax(0,1fr)}
  .sentence{font-size:19px}
  .post{padding-inline:14px}
}
.sm-only{display:none}
@media (max-width:600px){.btn .lg{display:none}.btn .sm-only{display:inline}}

/* làm nổi bật thử thách đọc to: trang kẻ dòng lớn hơn, viền nổi, nhãn đang mở nhấp nháy, nút ghi âm to */
.cover{grid-template-columns:minmax(0,.9fr) minmax(0,1.2fr)}
.cover.solo{grid-template-columns:minmax(0,1fr)}
.page{padding:22px 22px 22px 46px;box-shadow:0 0 0 6px rgba(240,164,87,.28),0 16px 40px rgba(0,0,0,.32)}
.page .sentence{font-size:clamp(24px,2.6vw,32px);line-height:1.3;margin:16px 0 8px}
.page .gloss{font-size:15px}
.page .timer{font-size:18px}
.chip.live::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--red);animation:pbPulse 1.4s ease-in-out infinite}
@keyframes pbPulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.7)}}
@media (max-width:820px){.cover{grid-template-columns:minmax(0,1fr)}}

/* lời kêu gọi dưới nút tạo sổ ở bìa */
.cover .cta-note{margin:10px 0 0;font-size:13px;opacity:.8}

/* ô tra từ điển cộng đồng */
.dict{padding-block:20px 0}
.dict-box{padding:18px 20px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:12px 24px;align-items:center}
.dict-text{display:flex;gap:12px;align-items:flex-start}
.dict-ic{width:42px;height:42px;border-radius:12px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;flex:none}
.dict-ic svg.i{width:22px;height:22px}
.dict-box h2{margin:0 0 2px;font-size:19px}
.dict-box p{margin:0;font-size:14px;color:var(--muted)}
.dict-form{display:flex;gap:8px;align-items:center;min-width:0}
.dict-form input{flex:1;min-width:0;height:46px;padding:0 14px;border:1px solid var(--border);border-radius:10px;background:var(--card);color:var(--text);outline:none;font-size:16px}
.dict-form input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.dict-form .btn{height:46px}
.dict-try{grid-column:1 / -1;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.chip-link{display:inline-flex;align-items:center;padding:3px 12px;border-radius:99px;border:1px solid var(--border);background:var(--card);color:var(--text);text-decoration:none;font-size:13px;font-weight:600}
.chip-link:hover{border-color:var(--accent);color:var(--accent)}
.dict-hint{align-self:flex-start}

/* trang kết quả tra từ */
.dc-page{padding-block:24px 56px;max-width:860px}
.dc-hero h1{display:flex;align-items:center;gap:10px;margin:0 0 6px;font-size:clamp(24px,4vw,32px)}
.dc-hero h1 svg.i{width:28px;height:28px;color:var(--accent)}
.dc-hero p{margin:0 0 14px;color:var(--muted)}
.dc-help{padding:18px 20px;margin-top:18px}
.dc-help h2{margin:0 0 8px;font-size:16px}
.dc-help ul{margin:0 0 12px;padding-left:20px;display:flex;flex-direction:column;gap:6px;font-size:14px}
.dc-count{margin:18px 0 10px}
.dc-list{display:flex;flex-direction:column;gap:14px}
.dc-card{padding:16px 18px;display:flex;flex-direction:column;gap:8px}
.dc-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.dc-word{margin:0;font-size:24px;line-height:1.2;color:var(--ink)}
.dc-ipa{color:var(--muted);font-size:15px}
.dc-say{width:36px;height:36px;border-radius:50%;border:1px solid var(--border);background:var(--card);color:var(--accent);display:grid;place-items:center;padding:0}
.dc-say:hover{background:var(--accent-soft)}
.dc-sp{flex:1}
.dc-mean{margin:0;font-size:17px;font-weight:600;color:var(--text)}
.dc-ex{margin:0;padding-left:12px;border-left:3px solid var(--margin);color:var(--muted);font-style:italic}
.dc-line{margin:0;font-size:14px;color:var(--text)}
.dc-line b{color:var(--ink)}
.dc-foot{display:flex;align-items:center;gap:10px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:10px;margin-top:2px}
.dc-card mark,.dc-mean mark,.dc-ex mark{background:linear-gradient(transparent 50%,var(--hl) 50%);color:inherit;padding:0 1px}
.dc-cta{margin-top:22px;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.dc-cta .btn{width:auto}
.dc-cta p{margin:0}

/* giới thiệu tính năng nổi bật */
.feat{padding-block:30px 0}
.feat-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.feat-main{grid-column:1 / -1;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px;align-items:center;padding:26px clamp(18px,3vw,36px);border-left:6px solid var(--margin)}
.feat-copy h3{margin:8px 0 8px;font-size:clamp(22px,3vw,28px);line-height:1.2}
.feat-copy p{margin:0 0 16px;color:var(--text);font-size:16px;max-width:52ch}
.tag-diff{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;padding:3px 10px;border-radius:99px;background:var(--amber-soft);color:var(--amber)}
.feat-sm{padding:22px 20px 20px;position:relative}
.feat-sm .tab,.grade-box .tab{width:34px;height:42px;border-radius:0 0 6px 6px;display:grid;place-items:center;color:var(--tab-ink)}
.feat-sm .tab{position:absolute;top:-1px;right:20px}
.feat-sm h3{margin:0 0 6px;font-size:18px;padding-right:44px}
.feat-sm p{margin:0 0 10px;color:var(--muted);font-size:14px}
.feat-sm .row{margin-top:4px}
.more-tools{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:18px 0 0;font-size:14px;color:var(--muted)}
.more-tools strong{color:var(--ink)}
.more-tools span{padding:3px 11px;border-radius:99px;background:var(--card);border:1px solid var(--border);color:var(--text);font-size:13px}

/* hình minh họa bài viết tay đã chấm (HTML + CSS, không phải ảnh chụp) */
.demo{margin:0;display:flex;flex-direction:column;align-items:center;gap:8px}
.hw-sheet{position:relative;width:100%;max-width:400px;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:18px 16px 16px 46px;box-shadow:var(--shadow);transform:rotate(-1.2deg);
  background-image:repeating-linear-gradient(transparent 0 39px,var(--line) 39px 40px);background-position:0 24px;font-style:italic;font-size:18px;color:var(--text)}
.hw-sheet::before{content:"";position:absolute;left:32px;top:0;bottom:0;width:2px;background:var(--margin)}
.hw-l{margin:0;line-height:40px}
.hw-t{font-weight:700;color:var(--ink);padding-right:70px}
.hw-err{position:relative;display:inline-block;color:var(--red);padding:0 4px}
.hw-err::after{content:"";position:absolute;inset:4px -3px;border:2px solid var(--red);border-radius:50%;transform:rotate(-3deg)}
.hw-err i{position:absolute;left:50%;top:-14px;transform:translateX(-50%);font-size:13px;font-style:normal;font-weight:700;color:var(--red);white-space:nowrap}
.hw-score{position:absolute;right:14px;top:10px;width:62px;height:62px;display:grid;place-items:center;border:3px solid var(--red);border-radius:50%;color:var(--red);font-weight:800;font-size:19px;font-style:normal;transform:rotate(8deg)}
.hw-note{margin:6px 0 0;color:var(--red);font-size:15px;font-weight:600}

/* mời chấm bài giúp người khác */
.grade{padding-block:20px 0}
.grade-box{display:flex;align-items:center;gap:18px;flex-wrap:wrap;background:var(--card);border:1px dashed var(--border);border-radius:14px;padding:20px 22px;position:relative}
.grade-box .tab{flex:none;align-self:flex-start;margin-top:-20px;height:48px}
.grade-copy{flex:1 1 320px;min-width:0}
.grade-copy h2{margin:0 0 4px;font-size:20px}
.grade-copy p{margin:0 0 4px}

/* giao diện TỐI (nút ◐ ở đầu trang; cùng khóa lưu 'notewise-theme' và cùng bảng màu tối với trong ứng dụng) */
:root[data-theme="dark"]{
  color-scheme:dark;
  --paper:#1e2127;--card:#262a31;--card-2:#2c3038;--border:#363b44;--line:#2a2e36;
  --text:#e6e8eb;--ink:#a8c0ff;--muted:#9aa1ab;
  --accent:#7c9cff;--accent-soft:#27304a;--cover:#152820;
  --hl:#7a6420;--margin:#5a3335;--green:#79d785;--green-soft:#1f3423;--amber:#ffb15c;--amber-soft:#3b2d1b;--red:#ff8a8a;
  --shadow:none;
}
:root[data-theme="dark"] .btn{color:#10131a}
:root[data-theme="dark"] .btn.line{color:var(--text)}
:root[data-theme="dark"] .btn.cream{color:#152820}
:root[data-theme="dark"] .btn.ghost-cover{color:var(--cover-ink)}
:root[data-theme="dark"] .page{box-shadow:0 0 0 6px rgba(240,164,87,.22),0 16px 40px rgba(0,0,0,.5)}
:root[data-theme="dark"] .sheet-bg{background:rgba(0,0,0,.65)}
:root[data-theme="dark"] .gal .more{background:rgba(0,0,0,.6)}
:root[data-theme="dark"] .dc-mean mark,:root[data-theme="dark"] .dc-ex mark{color:#fff}
.theme-btn{cursor:pointer;padding:0;min-width:42px}
.logo-img{display:block;height:46px;width:auto}
.logo-dark{display:none}
:root[data-theme="dark"] .logo-light{display:none}
:root[data-theme="dark"] .logo-dark{display:block}
@media (max-width:600px){.logo-img{height:36px}}

/* khung quảng cáo AdSense (chỉ ở trang Cộng đồng) */
.nw-ad{margin:4px 0;text-align:center;overflow:hidden;border-radius:12px;min-width:0}
.nw-ad ins.adsbygoogle[data-ad-status="unfilled"]{display:none!important}
/* tính năng sắp có (cột phải) */
.soon{border:1px dashed var(--border);background:var(--card-2);box-shadow:none}
.soon-tag{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:700;letter-spacing:.04em;padding:2px 9px;border-radius:99px;background:var(--amber-soft);color:var(--amber);margin-bottom:8px}
.soon h3{margin:0 0 4px;font-size:16px}
.soon p{margin:0;font-size:14px;color:var(--muted)}

@media (max-width:860px){
  .dict-box{grid-template-columns:minmax(0,1fr)}
  .feat-grid{grid-template-columns:minmax(0,1fr)}
  .feat-main{grid-template-columns:minmax(0,1fr)}
  .hw-sheet{margin-inline:auto}
}
@media (max-width:600px){
  .dict-form{flex-wrap:wrap}
  .dict-form input{flex-basis:100%}
  .dict-form .btn{width:100%}
  .grade-box .btn{width:100%}
  .dc-cta .btn{width:100%}
}

/* =====================================================================================
   Thiết kế lại (2026-10): "Sổ tay nhiều màu"
   - nền giấy chấm bi + mảng màu mờ, dải tab bảy màu dưới đầu trang;
   - nút kiểu tem dán: viền đậm, đổ bóng cứng, nhấn xuống khi bấm;
   - bìa sổ có gáy còng, dây thun, đường khâu, nhãn dán; thẻ như giấy dán băng keo;
   - danh mục như các tab đánh dấu. Mọi màu lấy từ token nên giao diện tối tự đổi theo.
   ===================================================================================== */
:root{
  --edge:#1c2a4a;            /* viền + bóng cứng của nút */
  --pop:#ffd54a; --pop-ink:#3a2a00;
  --dots:rgba(30,58,110,.11);
  --blob1:rgba(111,168,220,.26); --blob2:rgba(244,211,94,.30); --blob3:rgba(240,138,168,.16);
  --tabs:linear-gradient(90deg,var(--t1) 0 14.28%,var(--t2) 0 28.56%,var(--t3) 0 42.84%,var(--t4) 0 57.12%,var(--t5) 0 71.4%,var(--t6) 0 85.68%,var(--t7) 0);
}
:root[data-theme="dark"]{
  --edge:#05070b; --pop:#ffd54a; --pop-ink:#2b2000;
  --dots:rgba(168,192,255,.09);
  --blob1:rgba(124,156,255,.16); --blob2:rgba(255,177,92,.10); --blob3:rgba(240,138,168,.08);
}

/* ---- nền trang ---- */
body{
  background-color:var(--paper);
  background-image:
    radial-gradient(760px 420px at 6% -6%,var(--blob1),transparent 62%),
    radial-gradient(700px 400px at 98% 2%,var(--blob2),transparent 62%),
    radial-gradient(900px 520px at 50% 108%,var(--blob3),transparent 64%);
  background-repeat:no-repeat;
}
header.pb-hd{background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:0;position:sticky}
header.pb-hd::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:4px;background:var(--tabs)}
footer.pb-ft{position:relative;border-top:0;padding-top:26px;background:color-mix(in srgb,var(--card-2) 70%,transparent)}
footer.pb-ft::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--tabs)}

/* ---- nút "tem dán" ---- */
.btn{height:44px;padding:0 18px;border-radius:12px;border:2px solid var(--edge);background:var(--accent);color:#fff;font-weight:800;letter-spacing:.005em;
  box-shadow:3px 3px 0 var(--edge);transition:transform .12s cubic-bezier(.3,1.6,.5,1),box-shadow .12s,background-color .15s}
.btn:hover{filter:none;transform:translate(-1px,-1px);box-shadow:4px 4px 0 var(--edge)}
.btn:active{transform:translate(3px,3px);box-shadow:0 0 0 var(--edge);transition-duration:.05s}
.btn:focus-visible{outline:3px solid var(--pop);outline-offset:3px}
.btn svg.i{width:20px;height:20px;stroke-width:2.1}
.btn>svg.i:first-child:not(:only-child),.btn>svg.i:first-child:only-child{box-sizing:content-box;padding:3px;border-radius:50%;background:rgba(255,255,255,.24)}
.btn.line{background:var(--card);color:var(--ink)}
.btn.line>svg.i:first-child{background:var(--accent-soft);color:var(--accent)}
.btn.cream{background:var(--pop);color:var(--pop-ink);border-color:#0b1710;box-shadow:3px 3px 0 #0b1710}
.btn.cream:hover{box-shadow:4px 4px 0 #0b1710}
.btn.cream>svg.i:first-child{background:rgba(58,42,0,.14)}
.btn.ghost-cover{background:transparent;color:var(--cover-ink);border:2px dashed rgba(243,239,228,.55);box-shadow:none}
.btn.ghost-cover:hover{background:rgba(243,239,228,.12);transform:none;box-shadow:none;border-style:solid}
.btn.ghost-cover:active{transform:scale(.98)}
.btn.ghost-cover>svg.i:first-child{background:rgba(243,239,228,.16)}
.btn.sm{height:38px;padding:0 13px;border-radius:10px;box-shadow:2px 2px 0 var(--edge);font-size:13px}
.btn.sm:hover{box-shadow:3px 3px 0 var(--edge)}
.btn.sm:active{box-shadow:0 0 0 var(--edge);transform:translate(2px,2px)}
.btn.sm>svg.i{width:18px;height:18px}
.lang{border:2px solid var(--edge);border-radius:12px;box-shadow:2px 2px 0 var(--edge);color:var(--ink);font-weight:800;transition:transform .12s,box-shadow .12s,background-color .15s}
.lang:hover{background:var(--accent-soft);transform:translate(-1px,-1px);box-shadow:3px 3px 0 var(--edge)}
.lang:active{transform:translate(2px,2px);box-shadow:0 0 0 var(--edge)}
.chip-link{border:2px solid var(--edge);box-shadow:2px 2px 0 var(--edge);font-weight:700;color:var(--ink);transition:transform .12s,box-shadow .12s,background-color .15s}
.chip-link:hover{background:var(--pop);color:var(--pop-ink);transform:translate(-1px,-1px);box-shadow:3px 3px 0 var(--edge)}
.search{border:2px solid var(--edge);border-radius:12px;box-shadow:2px 2px 0 var(--edge)}
.search:focus-within{box-shadow:3px 3px 0 var(--accent);border-color:var(--accent)}
:root[data-theme="dark"] .btn{color:#0e1220}
:root[data-theme="dark"] .btn.line{color:var(--ink)}
:root[data-theme="dark"] .btn.cream{color:var(--pop-ink)}
:root[data-theme="dark"] .btn.ghost-cover{color:var(--cover-ink)}
:root[data-theme="dark"] .btn>svg.i:first-child{background:rgba(14,18,32,.18)}

/* ---- bìa sổ ---- */
.hero{padding-block:34px 10px}
.cover{background:
    repeating-linear-gradient(45deg,rgba(255,255,255,.03) 0 2px,transparent 2px 7px),
    radial-gradient(520px 320px at 84% 8%,rgba(124,196,127,.20),transparent 70%),
    radial-gradient(460px 300px at 8% 100%,rgba(244,211,94,.14),transparent 70%),
    linear-gradient(135deg,#2a4b3c 0%,#1b3226 100%);
  border:3px solid #0f1f17;border-radius:8px 22px 22px 8px;
  box-shadow:8px 8px 0 rgba(28,42,74,.22),0 22px 40px -18px rgba(0,0,0,.4);
  padding-right:clamp(40px,5vw,72px);isolation:isolate}
.cover::before{left:14px;top:18px;bottom:18px;width:18px;background:radial-gradient(circle at 50% 50%,#e9e3d1 0 4.5px,#0b1710 5px 7px,transparent 7.5px) 0 0/18px 30px repeat-y;opacity:.9}
.cover::after{content:"";position:absolute;top:-3px;bottom:-3px;right:26px;width:12px;background:linear-gradient(90deg,#b3321f,#d9503a 50%,#b3321f);box-shadow:0 0 0 1px rgba(0,0,0,.35);z-index:0;pointer-events:none}
.cover>*{position:relative;z-index:1}
.cover>.sticker{position:absolute;z-index:2;pointer-events:none}
.cover .eyebrow{display:inline-flex;align-items:center;gap:6px;padding:4px 12px 4px 10px;border:1.5px dashed rgba(243,239,228,.5);border-radius:99px;background:rgba(0,0,0,.14);color:var(--t7)}
.cover h1 .hand{color:var(--pop);text-decoration:underline wavy rgba(255,213,74,.7);text-underline-offset:.14em;text-decoration-thickness:.07em}
.sticker.st-star{top:-18px;left:62px;width:44px;height:44px;border-radius:50%;background:var(--pop);color:#3a2a00;border:2.5px solid #0f1f17;display:grid;place-items:center;transform:rotate(-12deg);box-shadow:3px 3px 0 #0f1f17}
.sticker.st-star svg.i{width:24px;height:24px;stroke:none}
.sticker.st-spark{left:44%;bottom:-18px;width:38px;height:38px;border-radius:10px;background:var(--t4);color:#3a0d1c;border:2.5px solid #0f1f17;display:grid;place-items:center;transform:rotate(9deg);box-shadow:3px 3px 0 #0f1f17}
.sticker.st-spark svg.i{width:22px;height:22px}
.cover.solo>.sticker.st-spark{left:auto;right:90px}
.page{box-shadow:0 0 0 3px #0f1f17,8px 8px 0 3px rgba(240,164,87,.55);border-radius:10px}
@media (min-width:821px){.page{transform:rotate(1.2deg);transition:transform .25s cubic-bezier(.3,1.4,.5,1)}.page:hover{transform:rotate(0)}}
.page::after{content:"";position:absolute;top:-13px;left:50%;width:92px;height:26px;margin-left:-46px;background:rgba(255,213,74,.82);transform:rotate(-2.5deg);border-radius:3px;box-shadow:0 2px 4px rgba(0,0,0,.18);
  background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.28) 0 6px,transparent 6px 12px)}
:root[data-theme="dark"] .page{box-shadow:0 0 0 3px #05070b,8px 8px 0 3px rgba(240,164,87,.3)}
.cover .cta-note{opacity:.9}
.cover-cta{gap:14px}

/* ---- tiêu đề mục: gạch sóng ---- */
.sec-hd h2,.sec-hd h1{position:relative;display:inline-block;padding-bottom:10px}
.sec-hd h2::after,.sec-hd h1::after{content:"";position:absolute;left:0;bottom:0;width:78px;height:8px;
  background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='26' height='8' viewBox='0 0 26 8'%3E%3Cpath d='M0 4c3.2-4 6.5-4 9.7 0s6.5 4 9.7 0 4.5-3.4 6.6-2' fill='none' stroke='%23f4a31d' stroke-width='2.6' stroke-linecap='round'/%3E%3C/svg%3E") repeat-x 0 0/26px 8px}
.sec-hd{align-items:flex-end}
.mark{background:linear-gradient(transparent 50%,var(--hl) 50% 92%,transparent 92%);padding:0 3px;border-radius:2px}

/* ---- ô tra từ điển ---- */
.dict-box{border:2px solid var(--edge);border-radius:16px;box-shadow:5px 5px 0 var(--edge);
  background:linear-gradient(135deg,var(--card),color-mix(in srgb,var(--accent-soft) 70%,var(--card)))}
.dict-ic{background:var(--accent);color:#fff;border:2px solid var(--edge);border-radius:14px;transform:rotate(-6deg);box-shadow:2px 2px 0 var(--edge)}
:root[data-theme="dark"] .dict-ic{color:#0e1220}
.dict-form input{border:2px solid var(--edge);border-radius:12px;box-shadow:inset 0 2px 0 rgba(0,0,0,.04)}
.dict-form input:focus{box-shadow:3px 3px 0 var(--accent);border-color:var(--accent)}

/* ---- giới thiệu tính năng ---- */
.feat{padding-block:40px 0}
.feat-main{border:2px solid var(--edge);border-left:8px solid var(--margin);border-radius:16px;box-shadow:6px 6px 0 var(--edge);
  background:radial-gradient(var(--dots) 1px,transparent 1.3px) 0 0/16px 16px,var(--card)}
.tag-diff{border:2px solid var(--edge);box-shadow:2px 2px 0 var(--edge);background:var(--pop);color:var(--pop-ink);transform:rotate(-2deg);font-weight:800}
.feat-sm{border:2px solid var(--edge);border-radius:16px;box-shadow:5px 5px 0 var(--edge);transition:transform .2s cubic-bezier(.3,1.5,.5,1),box-shadow .2s}
.feat-grid>.feat-sm:nth-of-type(1){transform:rotate(-.7deg)}
.feat-grid>.feat-sm:nth-of-type(2){transform:rotate(.6deg)}
.feat-grid>.feat-sm:nth-of-type(3){transform:rotate(-.4deg)}
.feat-sm:hover{transform:translateY(-4px) rotate(0)!important;box-shadow:8px 9px 0 var(--edge)}
.feat-sm::before{content:"";position:absolute;top:-12px;left:22px;width:70px;height:22px;border-radius:3px;transform:rotate(-4deg);box-shadow:0 2px 3px rgba(0,0,0,.15);
  background:rgba(124,196,127,.8) repeating-linear-gradient(90deg,rgba(255,255,255,.3) 0 6px,transparent 6px 12px)}
.feat-grid>.feat-sm:nth-of-type(2)::before{background-color:rgba(244,211,94,.85);transform:rotate(3deg)}
.feat-grid>.feat-sm:nth-of-type(3)::before{background-color:rgba(111,168,220,.85)}
.feat-sm .tab{border:2px solid var(--edge);border-top:0;height:46px;width:36px}
.more-tools span{border:2px solid var(--edge);box-shadow:2px 2px 0 var(--edge);font-weight:600;color:var(--ink);transform:rotate(-.6deg)}
.more-tools span:nth-child(even){transform:rotate(.8deg)}
.more-tools span:nth-child(3n){background:var(--accent-soft)}
.more-tools span:nth-child(3n+1){background:var(--green-soft)}
.more-tools span:nth-child(3n+2){background:var(--amber-soft)}

/* ---- mời chấm bài ---- */
.grade-box{border:2px dashed var(--edge);border-radius:16px;
  background:repeating-linear-gradient(135deg,transparent 0 16px,color-mix(in srgb,var(--pop) 22%,transparent) 16px 32px),var(--card);box-shadow:5px 5px 0 color-mix(in srgb,var(--t4) 70%,transparent)}
.grade-box .tab{border:2px solid var(--edge);border-top:0}

/* ---- danh mục = tab đánh dấu ---- */
.cats{gap:6px}
.cat{position:relative;border:2px solid transparent;border-left:7px solid var(--c,var(--t1));border-radius:6px 12px 12px 6px;padding-left:10px;font-weight:700;color:var(--ink);
  transition:transform .15s cubic-bezier(.3,1.5,.5,1),background-color .15s,box-shadow .15s}
.cats .cat:nth-of-type(1){--c:var(--t1)}.cats .cat:nth-of-type(2){--c:var(--t4)}.cats .cat:nth-of-type(3){--c:var(--t3)}.cats .cat:nth-of-type(4){--c:var(--t2)}.cats .cat:nth-of-type(5){--c:var(--t6)}.cats .cat:nth-of-type(6){--c:var(--t7)}
.cat:hover{background:var(--card);transform:translateX(4px)}
.cat[aria-current]{background:var(--card);border-color:var(--edge);border-left-color:var(--c,var(--t1));color:var(--ink);box-shadow:3px 3px 0 var(--edge);transform:translateX(6px)}
.cat svg.i{color:var(--c,var(--accent))}
.cat[aria-current] svg.i{color:var(--ink)}

/* ---- bài viết ---- */
.card{border:2px solid var(--edge);border-radius:16px;box-shadow:4px 4px 0 var(--edge)}
.post{transition:transform .18s cubic-bezier(.3,1.4,.5,1),box-shadow .18s}
.post:hover{transform:translateY(-2px);box-shadow:6px 7px 0 var(--edge)}
.card.empty,.card.soon,.card.dict-box{transform:none}
.soon{border:2px dashed var(--edge);background:var(--card-2);box-shadow:none}
.soon-tag{border:1.5px solid var(--edge);background:var(--pop);color:var(--pop-ink)}
.av{border:2px solid var(--edge)}
.lvl{border:1.5px solid var(--edge);background:var(--pop);color:var(--pop-ink)}
.article{border:2px solid var(--edge);border-left:8px solid var(--green);border-radius:12px}
.article.pod{border-left-color:var(--amber)}
.gal{border:2px solid var(--edge);border-radius:14px;gap:3px;background:var(--edge)}
.gal .g{transition:filter .2s}
.gal .g img{transition:transform .5s cubic-bezier(.2,.8,.2,1)}
.gal .g:hover img{transform:scale(1.05)}
.gal .g{cursor:zoom-in}
.vtile{border:2px solid #0b1710;box-shadow:3px 3px 0 var(--edge)}
.acts{border-top:2px dashed var(--line)}
.act{border-radius:99px;font-weight:600;transition:background-color .15s,color .15s,transform .12s}
.act:hover{background:var(--accent-soft);color:var(--accent);transform:translateY(-1px)}
.act.primary{color:var(--accent);font-weight:800}
.pager{gap:16px}

/* ---- cột phải ---- */
.join{background:radial-gradient(260px 200px at 100% 0%,rgba(244,211,94,.22),transparent 70%),repeating-linear-gradient(45deg,rgba(255,255,255,.03) 0 2px,transparent 2px 7px),linear-gradient(160deg,#2a4b3c,#1b3226);
  border:3px solid #0f1f17;box-shadow:6px 6px 0 rgba(28,42,74,.25);position:relative;overflow:hidden}
.join::after{content:"";position:absolute;right:-26px;top:-26px;width:90px;height:90px;border-radius:50%;background:var(--pop);opacity:.16}
.join li svg{color:var(--pop)}

/* ---- hộp tạo sổ ---- */
.sheet{border:3px solid var(--edge);box-shadow:8px 8px 0 var(--edge)}
.x{border:2px solid var(--edge);box-shadow:2px 2px 0 var(--edge)}

/* ---- trang tra từ / chi tiết ---- */
.dc-card{border:2px solid var(--edge);border-radius:16px;box-shadow:4px 4px 0 var(--edge)}
.dc-say{border:2px solid var(--edge);box-shadow:2px 2px 0 var(--edge)}
.detail .post:hover{transform:none;box-shadow:4px 4px 0 var(--edge)}
.crumb a{font-weight:600}

@media (max-width:860px){
  .cats .cat{border-left-width:2px;border-radius:99px;--c:var(--t1)}
  .cat[aria-current]{transform:none}
  .cat:hover{transform:none}
  .cat{border-color:var(--edge);box-shadow:2px 2px 0 var(--edge)}
  .feat-grid>.feat-sm:nth-of-type(n){transform:none}
}
@media (max-width:820px){
  .cover{padding-right:clamp(36px,8vw,56px);box-shadow:5px 5px 0 rgba(28,42,74,.22)}
  .cover::after{right:14px;width:9px}
  .sticker.st-star{left:48px}
  .sticker.st-spark{left:auto;right:42px}
}
@media (max-width:600px){
  .btn{height:46px}
  .btn.sm{height:40px}
  .card{box-shadow:3px 3px 0 var(--edge)}
  .feat-main{border-left-width:6px;box-shadow:4px 4px 0 var(--edge)}
  .dict-box{box-shadow:3px 3px 0 var(--edge)}
  .cover{border-radius:6px 16px 16px 6px}
}
@media (prefers-reduced-motion:reduce){.page,.page:hover,.feat-sm,.feat-sm:hover{transform:none!important}}

/* đầu trang gọn hơn để nút "tem dán" vẫn nằm trên một hàng ở màn hình rộng */
.hd{gap:12px}
.search{flex:1 1 320px;max-width:560px;margin-left:auto;margin-right:auto}          /* thanh tìm kiếm rộng, nằm giữa logo và cụm nút bên phải */
nav.main{flex:1 1 auto}
.hd-act{gap:8px;flex:none;margin-left:auto}
header.pb-hd .btn{padding:0 14px}
header.pb-hd .lang{min-width:42px;padding:0 9px}
@media (max-width:1100px){.search kbd{display:none}.search{max-width:440px}}
@media (max-width:600px){
  .hd-act{gap:6px;flex-wrap:nowrap;margin-left:auto}
  header.pb-hd .btn{padding:0 11px;height:42px;font-size:14px}
  header.pb-hd .lang{height:42px;min-width:40px;padding:0 8px}
}
@media (max-width:440px){
  header.pb-hd .btn>svg.i{display:none}
  header.pb-hd .btn{padding:0 12px}
}
@media (max-width:600px){header.pb-hd{position:relative}}

/* ===== Điện thoại (<=600px): đầu trang gọn + nút thử thách đọc to nằm một hàng ===== */
@media (max-width:600px){
  .hd{gap:8px 8px;padding-block:8px;align-items:center}
  .logo{order:1;flex:0 0 auto}
  .logo-img{height:32px}
  .hd-act{order:2;margin-left:auto;gap:6px;flex-wrap:nowrap}
  .search{order:3;flex:1 1 100%;max-width:none;height:40px;padding:0 10px}
  .search input{font-size:15px}
  nav.main{order:4;flex:1 1 100%;gap:6px;overflow-x:auto;scrollbar-width:none;padding:0 0 2px}
  nav.main::-webkit-scrollbar{display:none}
  nav.main a{padding:6px 12px;font-size:14px;border-radius:99px;border:1.5px solid transparent}
  nav.main a[aria-current]{border-color:var(--edge);background:var(--accent-soft);box-shadow:2px 2px 0 var(--edge)}
  header.pb-hd .lang{height:38px;min-width:38px;padding:0 8px;border-radius:10px;font-size:12.5px;box-shadow:2px 2px 0 var(--edge)}
  header.pb-hd .lang .i{width:17px;height:17px}
  header.pb-hd .btn{height:38px;padding:0 12px;font-size:13.5px;border-radius:10px;box-shadow:2px 2px 0 var(--edge)}
  header.pb-hd .btn>svg.i:first-child{width:18px;height:18px;padding:2px}
  /* nút Đăng nhập chỉ còn biểu tượng (chữ vẫn có cho trình đọc màn hình) */
  header.pb-hd .btn.line{padding:0;width:38px}
  header.pb-hd .btn.line .bt{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
  header.pb-hd .btn.line>svg.i:first-child{background:none;padding:0;width:20px;height:20px}
  /* thử thách đọc to: 3 nút trên một hàng */
  .page .row{flex-wrap:nowrap;gap:6px}
  .page .row .btn{flex:1 1 0;min-width:0;height:42px;padding:0 6px;gap:5px;font-size:12.5px;justify-content:center;overflow:hidden}
  .page .row .btn.sm{height:42px;padding:0 6px;font-size:12.5px;box-shadow:2px 2px 0 var(--edge)}
  .page .row .btn:last-child{flex:1.35 1 0}
  .page .row .btn>svg.i:first-child{width:16px;height:16px;padding:2px;flex:none}
  .page .row .btn{text-overflow:ellipsis}
}
@media (max-width:360px){.page .row .btn>svg.i:first-child{display:none}}
@media (max-width:600px){header.pb-hd .btn.line>svg.i:first-child{display:block;flex:none}}
@media (max-width:600px){
  .cover{padding:24px 26px 26px 38px}
  .cover::before{left:12px}
  .cover::after{right:12px;width:8px}
  .page{padding:18px 12px 16px 34px}
  .page::before{left:24px}
  .page .row{gap:5px}
  .page .row .btn,.page .row .btn.sm{padding:0 4px;font-size:12px;letter-spacing:0;text-overflow:clip;white-space:nowrap}
  .page .row .btn>svg.i:first-child{display:none}
  .page .row .btn:last-child{flex:1.45 1 0}
}
@media (max-width:600px){.page .row .btn,.page .row .btn.sm{font-size:11.5px;padding:0 3px}}
@media (max-width:400px){
  .hd{flex-wrap:wrap}
  .logo-img{height:27px}
  .hd-act{gap:5px}
  header.pb-hd .lang{height:36px;min-width:36px;padding:0 7px}
  header.pb-hd .lang:not(.theme-btn) .i{display:none}
  header.pb-hd .btn{height:36px;padding:0 10px;font-size:13px}
  header.pb-hd .btn.line{width:36px}
}
@media (max-width:400px){
  .cover{padding:22px 22px 24px 34px}
  .cover::before{left:10px;width:16px}
  .cover::after{right:10px;width:7px}
  .page{padding:16px 8px 14px 30px}
  .page::before{left:21px}
  .page .row{gap:4px}
  .page .row .btn,.page .row .btn.sm{font-size:11px;padding:0 2px;letter-spacing:-.01em}
}
@media (max-width:340px){.page .row .btn,.page .row .btn.sm{font-size:9.5px;letter-spacing:-.02em}}

/* ===== Điện thoại: nút trong thẻ bài (Nghe mẫu / Nghe chậm / Lưu từ ... và Thích / Bình luận / ...) mỗi nhóm một hàng ===== */
@media (max-width:600px){
  .post .row{flex-wrap:nowrap;gap:5px}
  .post .row .btn,.post .row .btn.sm{flex:1 1 auto;min-width:0;padding:0 6px;gap:4px;font-size:12px;letter-spacing:-.005em;white-space:nowrap;justify-content:center}
  .post .row .btn>svg.i:first-child{width:15px;height:15px;padding:2px;flex:none}
  .acts{flex-wrap:nowrap;gap:0;justify-content:space-between}
  .acts .act{flex:1 1 auto;min-width:0;justify-content:center;padding:8px 3px;gap:3px;font-size:12px;white-space:nowrap}
  .acts .act svg.i{width:15px;height:15px}
}
@media (max-width:400px){
  .post .row .btn>svg.i:first-child{display:none}
  .post .row .btn,.post .row .btn.sm{font-size:11.5px;padding:0 4px}
  .acts .act{font-size:11.5px;padding:8px 2px;gap:2px}
  .acts .act svg.i{width:14px;height:14px}
}

/* ===== «Tiện ích cho bạn»: một khung trình chiếu ở cột phải (_TienIch.cshtml + nw-public.js) ===== */
.rail{position:sticky;top:84px}
@media (max-height:760px){.rail{position:static}}
.pc{background:var(--card);border:2px solid var(--edge);border-radius:16px;box-shadow:4px 4px 0 var(--edge);overflow:hidden;min-width:0}
.pc-hd{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:12px 12px 10px 16px}
.pc-hd h2{display:flex;align-items:center;gap:8px;margin:0;font-size:16px}
.pc-hd h2 svg.i{color:#f4a31d;width:20px;height:20px}
.pc-ctl{display:flex;align-items:center;gap:6px}
.pc-count{font-size:12px;font-weight:700;color:var(--muted);font-variant-numeric:tabular-nums;margin-right:2px}
.pc-btn{width:30px;height:30px;padding:0;display:grid;place-items:center;border:2px solid var(--edge);border-radius:9px;background:var(--card);color:var(--ink);cursor:pointer;box-shadow:2px 2px 0 var(--edge);transition:transform .12s cubic-bezier(.3,1.6,.5,1),box-shadow .12s,background-color .15s}
.pc-btn:hover{background:var(--accent-soft);transform:translate(-1px,-1px);box-shadow:3px 3px 0 var(--edge)}
.pc-btn:active{transform:translate(2px,2px);box-shadow:0 0 0 var(--edge)}
.pc-btn:focus-visible,.pc-dot:focus-visible{outline:3px solid var(--pop);outline-offset:2px}
.pc-btn svg.i{width:15px;height:15px;stroke-width:2.3}
.pc-i-play{display:none;fill:currentColor;stroke:none}
.pc.paused .pc-i-play{display:block}
.pc.paused .pc-i-pause{display:none}
.pc-bar{display:block;height:3px;background:var(--line)}
.pc-bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--t2),var(--t4))}
.pc.auto .pc-bar i{animation:pcBar var(--pc-ms,7000ms) linear forwards}
@keyframes pcBar{to{width:100%}}
.pc-vp{overflow:hidden;transition:height .32s ease;touch-action:pan-y}
.pc-track{display:flex;align-items:flex-start;transition:transform .45s cubic-bezier(.22,1,.36,1);will-change:transform}
.pc.drag .pc-track{transition:none}
.pc-slide{flex:0 0 100%;min-width:0;padding:16px 18px 6px;position:relative}
.pc-ic{display:grid;place-items:center;width:50px;height:50px;margin-bottom:12px;border:2px solid var(--edge);border-radius:14px;background:var(--c,var(--t2));color:#1c2230;transform:rotate(-5deg);box-shadow:2px 2px 0 var(--edge)}
.pc-ic svg.i{width:24px;height:24px}
.pc-slide h3{margin:0 0 6px;font-size:19px;line-height:1.25;color:var(--ink)}
.pc-slide p{margin:0 0 12px;font-size:14.5px;line-height:1.5;color:var(--text);overflow-wrap:anywhere}
.pc-slide .pc-note{font-size:12.5px;color:var(--muted)}
.pc-demo{margin:2px 0 14px}
.pc-demo .hw-sheet{transform:none;max-width:none;font-size:14px;padding:12px 10px 10px 36px;box-shadow:none}
.pc-demo .hw-sheet::before{left:24px}
.pc-demo .hw-l{line-height:34px}
.pc-demo .hw-score{width:52px;height:52px;font-size:16px;right:10px;top:8px}
.pc-chips{display:flex;flex-wrap:wrap;gap:6px}
.pc-chips span{padding:4px 11px;border:2px solid var(--edge);border-radius:99px;background:var(--card-2);font-size:13px;font-weight:600;color:var(--ink);box-shadow:2px 2px 0 var(--edge)}
.pc-chips span:nth-child(3n){background:var(--accent-soft)}
.pc-chips span:nth-child(3n+1){background:var(--green-soft)}
.pc-chips span:nth-child(3n+2){background:var(--amber-soft)}
.pc-slide .btn{max-width:100%;white-space:normal;height:auto;min-height:42px;padding-block:8px;text-align:left}
.pc-cta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.pc-slide.soon .soon-tag{margin-bottom:10px}
.pc-dots{display:flex;gap:6px;justify-content:center;flex-wrap:wrap;padding:6px 14px 14px}
.pc-dot{width:9px;height:9px;padding:0;border:1.5px solid var(--edge);border-radius:99px;background:var(--card);cursor:pointer;transition:width .25s,background-color .25s}
.pc-dot:hover{background:var(--pop)}
.pc-dot.on{width:24px;background:var(--accent)}
/* không có JavaScript: các trang chiếu xếp dọc như danh sách */
.pc:not(.js) .pc-track{display:block}
.pc:not(.js) .pc-slide{border-top:1px dashed var(--border)}
.pc:not(.js) .pc-slide:first-child{border-top:0}
.pc:not(.js) .pc-ctl,.pc:not(.js) .pc-dots,.pc:not(.js) .pc-bar{display:none}
/* trang chiếu không hiển thị thì không nhận phím Tab (visibility tắt sau khi trượt xong) */
.pc.js .pc-slide{visibility:hidden;transition:visibility 0s linear .45s}
.pc.js .pc-slide.cur,.pc.drag .pc-slide{visibility:visible;transition-delay:0s}
@media (prefers-reduced-motion:reduce){.pc-track,.pc-vp,.pc-dot{transition:none!important}.pc.auto .pc-bar i{animation:none}}
.pc-count{display:none}
.pc-hd h2{white-space:nowrap}

/* đọc / nghe ngay tại EngNote (khách) */
.reader{margin-top:16px}
.reader-media{margin:0 0 14px;display:grid;gap:10px}
.reader-media audio{width:100%;display:block}
.reader-media video{width:100%;max-height:60vh;background:#000;border-radius:12px;display:block}
.reader-media .yt{position:relative;width:100%;aspect-ratio:16/9;border-radius:12px;overflow:hidden;background:#000}
.reader-media .yt iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.reader-meta{display:flex;gap:6px;flex-wrap:wrap;margin:0 0 8px;color:var(--muted);font-size:13px;font-weight:700}
.reader-body{font-size:17px;line-height:1.85;max-width:72ch;word-break:break-word}
.reader-body p{margin:0 0 1em}
.reader-msg{margin:0;padding:12px 14px;border-radius:12px;background:var(--amber-soft,#fff1dc);color:var(--text)}
.reader-copy{margin:14px 0 4px;font-size:12.5px;color:var(--muted)}
.reader-cta{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-top:12px;padding:12px 14px;border-radius:12px;background:var(--accent-soft)}
.reader-cta span{flex:1 1 220px;color:var(--muted);font-size:14px}
@media (max-width:600px){.reader-body{font-size:16.5px}}

/* trang chính sách (dùng chung khung Cộng đồng) */
.polp{max-width:860px;padding-block:20px 40px}
.polp-card{padding:28px 30px}
.polp-date{color:var(--muted);font-size:13px;margin:0 0 10px}
.polp-text h1,.polp-text h2{font-size:26px;color:var(--ink);margin:0 0 12px}
.polp-text h3{font-size:18px;color:var(--ink);margin:24px 0 8px}
.polp-text p{margin:0 0 12px;line-height:1.7}
.polp-text ul,.polp-text ol{margin:0 0 12px;padding-left:22px;line-height:1.7}
.polp-text li{margin-bottom:6px}
.polp-text a{color:var(--accent);font-weight:700;text-decoration:underline}
.polp-foot{text-align:center;margin:16px 0 0}
@media (max-width:600px){.polp-card{padding:20px 18px}.polp-text h2{font-size:22px}}

/* ===== Màn hình gập mở (Z Fold ≈ 600–900 px) / máy tính bảng nhỏ: logo + tìm kiếm + cụm nút luôn trên MỘT hàng ===== */
@media (min-width:601px) and (max-width:1100px){
  .hd{flex-wrap:nowrap;gap:10px}
  .logo{flex:none}
  .search{flex:1 1 120px;min-width:100px;max-width:none;margin:0}
  .hd-act{flex:none;margin-left:0;gap:6px;flex-wrap:nowrap}
  header.pb-hd .btn{padding:0 12px;font-size:14px}
}
@media (min-width:601px) and (max-width:820px){
  header.pb-hd .btn>svg.i:first-child{display:none}
  header.pb-hd .btn{padding:0 11px}
  .logo-img{height:38px}
}
/* 2 nút ở khối giới thiệu («Tạo sổ miễn phí» + «Xem cộng đồng») luôn nằm trên 1 hàng */
.cover-cta{flex-wrap:nowrap;gap:8px}
.cover-cta .btn{flex:1 1 0;min-width:0;justify-content:center;white-space:nowrap;padding-inline:12px;gap:6px;font-size:clamp(13px,3.7vw,16px)}
@media (max-width:480px){.cover-cta .btn>svg.i{display:none}}

/* Ảnh duy nhất của bài (trang công khai): khung ôm sát ảnh, không cắt ảnh dọc, tối đa 560 px cao */
.gal.n1 .g{aspect-ratio:auto;min-height:160px;display:flex;align-items:center;justify-content:center}
.gal.n1 .g img{position:static;inset:auto;width:auto;height:auto;max-width:100%;max-height:560px;object-fit:contain;margin:0 auto;display:block}
.ptext a.cd-url{text-decoration:underline;font-weight:600;overflow-wrap:anywhere}

/* Thẻ xem trước liên kết trong bài công khai (nw-linkpreview.js, nạp bằng mã đã ký) */
.cd-lp{margin:10px 0 2px}
.cd-lp[hidden]{display:none}
.cd-lpc{display:block;border:1.5px solid var(--border);border-radius:12px;overflow:hidden;background:var(--card-2);color:var(--text);text-decoration:none}
a.cd-lpc:hover{border-color:var(--accent)}
.cd-lpc-img{display:block;background:var(--card);aspect-ratio:1.91/1;overflow:hidden;border-bottom:1.5px solid var(--border)}
.cd-lpc-img img{display:block;width:100%;height:100%;object-fit:cover}
.cd-lpc-body{display:flex;flex-direction:column;gap:3px;padding:10px 14px 12px;min-width:0}
.cd-lpc-host{font-size:12px;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cd-lpc-t{font-size:16px;line-height:1.3;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;overflow-wrap:anywhere}
.cd-lpc-d{font-size:14px;line-height:1.4;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;overflow-wrap:anywhere}
.cd-lpc.noimg{border-left:5px solid var(--accent)}
.cd-lpc.sm{display:flex;align-items:stretch}
.cd-lpc.sm .cd-lpc-img{flex:0 0 120px;aspect-ratio:1/1;border-bottom:0;border-right:1.5px solid var(--border)}
.cd-lpc.sm .cd-lpc-body{justify-content:center}
@media (max-width:600px){.cd-lpc-t{font-size:15px}.cd-lpc.sm .cd-lpc-img{flex-basis:88px}}

/* Bìa trang công khai: chữ luôn nằm TRONG khung nút (xuống dòng khi hẹp), điện thoại hẹp thì 2 nút xếp dọc đầy hàng */
.cover-cta .btn{white-space:normal;height:auto;min-height:46px;padding-block:8px;line-height:1.2;text-align:center;overflow-wrap:anywhere}
@media (max-width:520px){
  .cover-cta{flex-direction:column;align-items:stretch;gap:10px}
  .cover-cta .btn{flex:none;width:100%;font-size:16px}
}

/* ===== CMS (Admin › Nội dung công khai): thông báo đầu trang, trang tĩnh, liên kết chân trang ===== */
.cms-banner{padding:9px 0;font-size:14px;line-height:1.4;background:var(--accent-soft);color:var(--ink);border-bottom:1px solid var(--border)}
.cms-banner .wrap{display:flex;align-items:center;justify-content:center;gap:6px 14px;flex-wrap:wrap;text-align:center}
.cms-banner a{font-weight:800;color:var(--accent);text-decoration:underline;white-space:nowrap}
.cms-banner.promo{background:#fff1c9;color:#4a3500;border-bottom-color:#f1d98a}
.cms-banner.promo a{color:#8a4b00}
.cms-banner.warn{background:#fde4e1;color:#7a1d14;border-bottom-color:#f2c4bd}
.cms-banner.warn a{color:#b3261e}
:root[data-theme="dark"] .cms-banner.promo{background:#3b2d1b;color:#ffd99a;border-bottom-color:#5a4524}
:root[data-theme="dark"] .cms-banner.promo a{color:#ffb15c}
:root[data-theme="dark"] .cms-banner.warn{background:#432322;color:#ffb4ab;border-bottom-color:#6a3330}
:root[data-theme="dark"] .cms-banner.warn a{color:#ff8a8a}
.cms-page{max-width:820px;margin:26px auto;padding:24px 26px}
.cms-page h1{margin:6px 0 14px;font-size:28px;line-height:1.25;color:var(--ink)}
.cms-crumb a{font-size:13.5px;color:var(--muted);text-decoration:none}
.cms-crumb a:hover{color:var(--accent);text-decoration:underline}
.cms-body{font-size:16px;line-height:1.7;overflow-wrap:anywhere}
.cms-body p{margin:0 0 14px}
.cms-body h1,.cms-body h2,.cms-body h3{margin:22px 0 8px;color:var(--ink);line-height:1.3}
.cms-body ul,.cms-body ol{margin:0 0 14px;padding-left:22px}
.cms-body a{color:var(--accent);text-decoration:underline}
.cms-body blockquote{margin:0 0 14px;padding:6px 14px;border-left:4px solid var(--accent);background:var(--card-2);border-radius:0 8px 8px 0}
.cms-body table{border-collapse:collapse;margin:0 0 14px;max-width:100%;display:block;overflow-x:auto}
.cms-body th,.cms-body td{border:1px solid var(--border);padding:6px 10px}
.cms-updated{margin:18px 0 0}
footer.pb-ft .wrap a{color:inherit}
@media (max-width:620px){.cms-page{margin:14px auto;padding:18px 16px}.cms-page h1{font-size:24px}}