/* NoteWise - 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 NoteWise; 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 NoteWise 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%}
}