/* Writadia — site styles
   Paper & ink: cool off-white paper, blue-black ink, verdigris quill accent,
   one signature: the highlighter stroke used for phrases and model-answer notes. */

@font-face{font-family:"Nunito";font-style:normal;font-weight:400;font-display:swap;src:url(/assets/fonts/nunito-latin-400-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Nunito";font-style:normal;font-weight:400;font-display:swap;src:url(/assets/fonts/nunito-latin-ext-400-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Nunito";font-style:normal;font-weight:700;font-display:swap;src:url(/assets/fonts/nunito-latin-700-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Nunito";font-style:normal;font-weight:700;font-display:swap;src:url(/assets/fonts/nunito-latin-ext-700-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Nunito";font-style:normal;font-weight:800;font-display:swap;src:url(/assets/fonts/nunito-latin-800-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Nunito";font-style:normal;font-weight:800;font-display:swap;src:url(/assets/fonts/nunito-latin-ext-800-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Nunito";font-style:italic;font-weight:400;font-display:swap;src:url(/assets/fonts/nunito-latin-400-italic.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Nunito";font-style:italic;font-weight:400;font-display:swap;src:url(/assets/fonts/nunito-latin-ext-400-italic.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Literata";font-style:normal;font-weight:400;font-display:swap;src:url(/assets/fonts/literata-latin-400-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Literata";font-style:normal;font-weight:400;font-display:swap;src:url(/assets/fonts/literata-latin-ext-400-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Literata";font-style:italic;font-weight:400;font-display:swap;src:url(/assets/fonts/literata-latin-400-italic.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Literata";font-style:italic;font-weight:400;font-display:swap;src:url(/assets/fonts/literata-latin-ext-400-italic.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Literata";font-style:normal;font-weight:600;font-display:swap;src:url(/assets/fonts/literata-latin-600-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Literata";font-style:normal;font-weight:600;font-display:swap;src:url(/assets/fonts/literata-latin-ext-600-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}

:root{
  --paper:#F5F6FA; --sheet:#FFFFFF; --ink:#1E2440; --ink-2:#555C78; --ink-3:#5E6580;
  --rule:#E2E5EF; --rule-2:#EEF0F6; --quill:#4652C8; --quill-hover:#3641AE; --on-quill:#FFFFFF;
  --quill-soft:#E8EAFB; --hl:rgba(255,214,90,.6); --margin:#F2A7A0;
  --ok:#23704A; --ok-soft:#DDF3E7; --warn:#835400; --warn-soft:#FFF1C2; --err:#B0352C; --err-soft:#FCE3E0;
  --l-a1:#3F6B28; --l-a2:#1F6346; --l-b1:#1F5874; --l-b2:#3A4A8C; --l-c1:#5A3F86; --l-c2:#7B3658;
  --s0:#2a78d6; --s1:#eb6834; --s2:#1baf7a; --s3:#eda100; --s4:#e87ba4; --s5:#6250d6;
  --mint:#D9F2E6; --sky:#DBEBFB; --lav:#E7E1FA; --peach:#FDE3D3; --butter:#FFF1C2; --rose:#FADDE6;
  --hero:#1E2440; --hero-ink:#FFFFFF; --hero-ink-2:#CDD0E8; --accent:#FFD866;
  --shadow:0 1px 2px rgba(30,36,64,.06),0 2px 8px rgba(30,36,64,.04);
  --shadow-up:0 6px 20px rgba(30,36,64,.10);
  --font-ui:"Nunito",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-read:"Literata",Georgia,"Times New Roman",serif;
  --radius:20px; --radius-s:12px; --radius-l:28px;
  --lh:1.6; --read-lh:1.7;
  --tabbar-h:0px;
  color-scheme:light;
  font-size:16.5px;
}
[data-theme="dark"]{
  --paper:#14172A; --sheet:#1D2138; --ink:#ECEEF8; --ink-2:#BCC1DA; --ink-3:#A2A8C4;
  --rule:#30354F; --rule-2:#262A44; --quill:#A3ACFF; --quill-hover:#BCC3FF; --on-quill:#151936;
  --quill-soft:#2A2F55; --hl:rgba(255,214,90,.28); --margin:#8C4A55;
  --ok:#7CD3A2; --ok-soft:#1C3329; --warn:#F0C564; --warn-soft:#3A3120; --err:#F59C93; --err-soft:#3A2224;
  --l-a1:#9FD07F; --l-a2:#6FCBA3; --l-b1:#7CBDE0; --l-b2:#A3B0F0; --l-c1:#C2A8EE; --l-c2:#EC9FC0;
  --s0:#3987e5; --s1:#d95926; --s2:#199e70; --s3:#c98500; --s4:#d55181; --s5:#9085e9;
  --mint:#1E3B31; --sky:#1E3248; --lav:#2E2850; --peach:#45302A; --butter:#42391F; --rose:#45283A;
  --hero:#262B4A; --hero-ink:#FFFFFF; --hero-ink-2:#C9CDE6; --accent:#FFD866;
  --shadow:0 1px 2px rgba(0,0,0,.3); --shadow-up:0 6px 20px rgba(0,0,0,.35);
  color-scheme:dark;
}
[data-size="s"]{font-size:15px} [data-size="l"]{font-size:18px} [data-size="xl"]{font-size:20px}
[data-spacing="relaxed"]{--lh:1.8; --read-lh:1.95}
[data-readfont="sans"]{--font-read:var(--font-ui)}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:5rem}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font-ui);line-height:var(--lh);
  padding-bottom:var(--tabbar-h);min-height:100vh;display:flex;flex-direction:column}
main{flex:1}
img,svg{max-width:100%}
a{color:var(--quill);text-underline-offset:.18em;text-decoration-thickness:1px}
a:hover{color:var(--quill-hover);text-decoration-thickness:2px}
h1,h2,h3,h4{line-height:1.2;margin:0 0 .5em;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(1.8rem,1.3rem + 2.2vw,2.6rem)}
h2{font-size:1.45rem}
h3{font-size:1.18rem}
p{margin:0 0 1em}
:focus-visible{outline:3px solid var(--quill);outline-offset:2px;border-radius:4px}
[hidden]{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:1rem;top:-3rem;background:var(--ink);color:var(--paper);padding:.5rem 1rem;border-radius:8px;z-index:200}
.skip:focus{top:.5rem}
.small{font-size:.88rem;color:var(--ink-2)}
.print-only{display:none}

mark{color:inherit;background:linear-gradient(transparent 38%,var(--hl) 38%,var(--hl) 90%,transparent 90%);padding:0 .08em;border-radius:2px}

/* ---------- layout ---------- */
.wrap{width:100%;max-width:74rem;margin:0 auto;padding-inline:1.25rem}
.wrap.narrow{max-width:48rem}
.page-pad{padding-top:1.25rem;padding-bottom:3rem}
.page-head{margin:.5rem 0 1.75rem;max-width:48rem}
.lead{font-size:1.12rem;color:var(--ink-2);max-width:42rem}
.actions-row{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center}

/* ---------- header ---------- */
.top{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--paper) 92%,transparent);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--rule)}
.top-in{max-width:74rem;margin:0 auto;padding:.55rem 1.25rem;display:flex;align-items:center;gap:1.25rem}
.brand{display:inline-flex;align-items:center;gap:.55rem;text-decoration:none;color:var(--ink);font-weight:700;font-size:1.2rem;letter-spacing:-.01em}
.brand:hover{color:var(--ink)}
.logo-mark .lm-bg{fill:var(--quill)} .logo-mark .lm-vane{fill:var(--on-quill)} .logo-mark .lm-spine{stroke:var(--quill);stroke-width:1.6;fill:none;stroke-linecap:round}
.logo-mark .lm-hl{stroke:#F2D45C;stroke-width:3.2;fill:none;stroke-linecap:round}
.mainnav{display:flex;gap:.2rem;margin-left:.5rem}
.mainnav a{color:var(--ink-2);text-decoration:none;padding:.45rem .7rem;border-radius:8px;font-weight:700;font-size:.95rem}
.mainnav a:hover{color:var(--ink);background:var(--rule-2)}
.mainnav a[aria-current="page"]{color:var(--ink);background:linear-gradient(transparent 62%,var(--hl) 62%,var(--hl) 92%,transparent 92%)}
.top-tools{margin-left:auto;display:flex;align-items:center;gap:.3rem}
.icon-btn{display:inline-grid;place-items:center;width:2.6rem;height:2.6rem;border-radius:10px;border:0;background:transparent;color:var(--ink-2);cursor:pointer}
.icon-btn:hover{background:var(--rule-2);color:var(--ink)}
.icon-btn[aria-current="page"]{color:var(--quill)}
.role-pill{font-size:.82rem;font-weight:700;text-decoration:none;color:var(--quill);border:1px solid var(--rule);border-radius:999px;padding:.25rem .7rem;white-space:nowrap}
.role-pill:hover{border-color:var(--quill)}

/* announcements */
.announce{display:flex;align-items:flex-start;gap:.75rem;padding:.55rem 1.25rem;background:var(--quill-soft);border-bottom:1px solid var(--rule);justify-content:center}
.announce p{margin:0;max-width:60rem;padding-top:.35rem;font-size:.95rem}
.announce.tone-warn{background:var(--warn-soft)} .announce.tone-ok{background:var(--ok-soft)}
.announce .icon-btn{width:2.2rem;height:2.2rem;flex:none}

/* breadcrumbs */
.crumbs ol{list-style:none;margin:0 0 .75rem;padding:0;display:flex;flex-wrap:wrap;gap:.25rem;font-size:.88rem;color:var(--ink-3)}
.crumbs li+li::before{content:"/";margin-right:.3rem;color:var(--rule)}
.crumbs a{color:var(--ink-2);text-decoration:none}
.crumbs a:hover{text-decoration:underline}

/* ---------- buttons & form controls ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.45rem;min-height:2.75rem;padding:.55rem 1.1rem;border-radius:10px;border:1px solid var(--quill);
  background:var(--quill);color:var(--on-quill);font:inherit;font-weight:700;font-size:.97rem;text-decoration:none;cursor:pointer;line-height:1.2}
.btn:hover{background:var(--quill-hover);border-color:var(--quill-hover);color:var(--on-quill)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--rule)}
.btn-ghost:hover{background:var(--rule-2);color:var(--ink);border-color:var(--ink-3)}
.btn-quiet{background:transparent;border-color:transparent;color:var(--ink-2)}
.btn-quiet:hover{background:var(--rule-2);color:var(--err);border-color:transparent}
.link-btn{background:none;border:0;padding:.3rem 0;color:var(--quill);font:inherit;font-weight:700;cursor:pointer;text-decoration:underline;text-underline-offset:.18em;display:inline-flex;align-items:center;gap:.3rem}
input[type=text],input[type=email],input[type=search],input[type=password],input[type=number],input[type=date],input[type=url],select,textarea{
  font:inherit;color:var(--ink);background:var(--sheet);border:1px solid var(--rule);border-radius:var(--radius-s);padding:.6rem .75rem;min-height:2.75rem;width:100%}
input:focus,select:focus,textarea:focus{border-color:var(--quill);outline:2px solid color-mix(in srgb,var(--quill) 30%,transparent);outline-offset:0}
label.check{display:flex;align-items:center;gap:.5rem;cursor:pointer}
input[type=checkbox],input[type=radio]{accent-color:var(--quill);width:1.15rem;height:1.15rem;flex:none}

.chip-row{display:flex;flex-wrap:wrap;gap:.4rem}
.chip{display:inline-flex;align-items:center;min-height:2.4rem;padding:.3rem .9rem;border:1px solid var(--rule);border-radius:999px;text-decoration:none;color:var(--ink-2);font-weight:700;font-size:.92rem;background:var(--sheet)}
.chip:hover{border-color:var(--ink-3);color:var(--ink)}
.chip.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}

/* level chips */
.lvl{--c:var(--ink-3);display:inline-flex;align-items:center;justify-content:center;min-width:2.4rem;height:1.6rem;padding:0 .45rem;border-radius:6px;font-size:.8rem;font-weight:700;
  color:var(--c);background:color-mix(in srgb,var(--c) 13%,transparent);border:1px solid color-mix(in srgb,var(--c) 35%,transparent);letter-spacing:.02em;flex:none}
.lvl-a1{--c:var(--l-a1)}.lvl-a2{--c:var(--l-a2)}.lvl-b1{--c:var(--l-b1)}.lvl-b2{--c:var(--l-b2)}.lvl-c1{--c:var(--l-c1)}.lvl-c2{--c:var(--l-c2)}
.lvl-link{text-decoration:none}
.tag{font-size:.86rem;font-weight:700;color:var(--ink-2);text-decoration:none;border-bottom:1px dotted var(--ink-3)}
.tag:hover{color:var(--ink)}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:.35rem .9rem;color:var(--ink-3);font-size:.88rem;margin:0}
.meta-row .ic{vertical-align:-3px}
.tag-read{color:var(--quill);font-weight:700}
.done-tag{color:var(--ok);font-weight:700;display:inline-flex;align-items:center;gap:.2rem}

/* ---------- home: see "Pastel cards" layer ---------- */
[data-for="teacher"].tool-teacher{display:none}
.plain-links{list-style:none;padding:0;margin:0}
.plain-links li{padding:.4rem 0;border-bottom:1px solid var(--rule-2)}
.plain-links a{text-decoration:none;font-weight:700}
.more{display:inline-block;margin-top:.6rem;font-weight:700}

/* ---------- library / lists ---------- */
.filters{background:var(--sheet);border:1px solid var(--rule);border-radius:14px;padding:1rem;margin-bottom:1rem;display:grid;gap:.9rem}
.filter-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr)) minmax(0,1.6fr);gap:.7rem;align-items:end}
.filter-grid label>span{display:block;font-size:.82rem;font-weight:700;color:var(--ink-2);margin-bottom:.2rem}
.filter-grid .check{grid-column:1/3}
.filter-grid .btn{grid-column:4;justify-self:end}
.result-count{color:var(--ink-2);font-size:.92rem}
.task-list{list-style:none;margin:0 0 1rem;padding:0;border-top:1px solid var(--rule)}
.task-row{display:flex;gap:1rem;align-items:flex-start;padding:1rem .25rem;border-bottom:1px solid var(--rule)}
.task-row .lvl{margin-top:.25rem}
.task-row-main{min-width:0}
.task-row h2,.task-row h3{font-size:1.12rem;margin:0 0 .2rem}
.task-row h2 a,.task-row h3 a{color:var(--ink);text-decoration:none}
.task-row h2 a:hover,.task-row h3 a:hover{text-decoration:underline;color:var(--quill)}
.task-row p{margin:0 0 .3rem;color:var(--ink-2)}
.task-list.compact .task-row{padding:.8rem .25rem}
.type-group{margin:2rem 0}
.type-group h2{font-size:1.25rem}
.pager{display:flex;flex-wrap:wrap;gap:.35rem;margin-top:1.5rem}
.pager a,.pager span{display:inline-grid;place-items:center;min-width:2.6rem;height:2.6rem;border:1px solid var(--rule);border-radius:8px;text-decoration:none;font-weight:700}
.pager span{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.empty{padding:2rem;border:1px dashed var(--rule);border-radius:14px;text-align:center}
.level-head .meta-row{margin-bottom:.4rem}
.level-intro{margin-bottom:1.5rem}
.level-nav{display:flex;justify-content:space-between;margin-top:2.5rem;padding-top:1rem;border-top:1px solid var(--rule);font-weight:700}
.faq{margin-top:2.5rem;max-width:48rem}
.faq details{border-bottom:1px solid var(--rule);padding:.2rem 0}
.faq summary{cursor:pointer;font-weight:700;padding:.7rem 0;list-style-position:outside}
.faq .prose{padding-bottom:.5rem}

.article-group{margin-bottom:2.25rem}
.article-group h2{font-size:1.2rem;color:var(--ink-2)}
.article-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--rule)}
.article-list li{border-bottom:1px solid var(--rule)}
.article-list a{display:grid;gap:.15rem;padding:1rem .25rem;text-decoration:none;color:var(--ink)}
.article-list a:hover .al-title{text-decoration:underline;color:var(--quill)}
.al-title{font-weight:700;font-size:1.1rem}
.al-sum{color:var(--ink-2)}
.al-meta{color:var(--ink-3);font-size:.85rem;display:flex;gap:.5rem;align-items:center}

.exam-doors{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;margin-bottom:2rem}
.exam-door{display:grid;gap:.3rem;padding:1.3rem 1.4rem;border:1px solid var(--rule);border-radius:16px;background:var(--sheet);text-decoration:none;color:var(--ink)}
.exam-door:hover{border-color:var(--quill)}
.exam-name{font-size:1.35rem;font-weight:700}
.exam-text{color:var(--ink-2)}
.exam-n{color:var(--quill);font-weight:700;font-size:.9rem}
.exam-intro{background:var(--sheet);border:1px solid var(--rule);border-radius:14px;padding:.4rem 1.3rem 1rem;margin-bottom:1.5rem}
.exam-intro>summary{cursor:pointer;font-weight:700;padding:.7rem 0}

/* ---------- prose (articles, guides, model answers) ---------- */
.prose{font-family:var(--font-read);line-height:var(--read-lh);font-size:1.04rem;max-width:42rem}
.prose h2{font-family:var(--font-ui);font-size:1.35rem;margin-top:1.8em}
.prose h3{font-family:var(--font-ui);font-size:1.12rem;margin-top:1.5em}
.prose h4,.prose h5{font-family:var(--font-ui);font-size:1rem;margin-top:1.3em}
.prose ul,.prose ol{padding-left:1.3rem;margin:0 0 1.1em}
.prose li{margin:.25em 0}
.prose blockquote{margin:1.2em 0;padding:.2em 1.1em;border-left:3px solid var(--rule);color:var(--ink-2);font-style:italic}
.prose code{font-family:var(--font-ui);background:var(--rule-2);padding:.05em .35em;border-radius:4px;font-size:.92em}
.prose hr{border:0;border-top:1px solid var(--rule);margin:2em 0}
.table-wrap{overflow-x:auto;margin:0 0 1.2em}
table{border-collapse:collapse;width:100%;font-family:var(--font-ui);font-size:.95rem}
th,td{text-align:left;padding:.55rem .7rem;border-bottom:1px solid var(--rule);vertical-align:top}
thead th{border-bottom:2px solid var(--ink-3);font-size:.88rem}
.callout{font-family:var(--font-ui);border-radius:12px;padding:.85rem 1.1rem;margin:1.2em 0;background:var(--sheet);border:1px solid var(--rule)}
.callout>:last-child{margin-bottom:0}
.callout-label{font-weight:700;margin-bottom:.35em}
.callout-tip{border-left:4px solid var(--quill)}
.callout-note{background:var(--rule-2);border-color:transparent}
.callout-wrong{border-left:4px solid var(--err);background:var(--err-soft);border-color:transparent}
.callout-right{border-left:4px solid var(--ok);background:var(--ok-soft);border-color:transparent}
.callout-wrong .callout-label{color:var(--err)} .callout-right .callout-label{color:var(--ok)}
.callout-box{background:var(--sheet)}
.callout-example{font-family:var(--font-read);border-left:2px solid var(--margin);border-radius:0 12px 12px 0}
.prose del{text-decoration-color:var(--err);text-decoration-thickness:2px;color:var(--ink-2)}

.article-grid{display:grid;grid-template-columns:14rem minmax(0,1fr);gap:2.5rem;align-items:start}
.article-grid:not(:has(.toc)){grid-template-columns:minmax(0,1fr)}
.toc{position:sticky;top:5.5rem;font-size:.9rem;border-left:2px solid var(--rule);padding-left:1rem}
.toc-h{font-weight:700;margin-bottom:.4rem}
.toc ol{list-style:none;padding:0;margin:0}
.toc li{margin:.35rem 0}
.toc a{color:var(--ink-2);text-decoration:none}
.toc a:hover{color:var(--quill);text-decoration:underline}
.related{margin-top:2.5rem;padding-top:1.5rem;border-top:1px solid var(--rule)}
.related h2{font-size:1.2rem}
.rel-list{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.5rem 1.5rem}
.rel-list a{display:flex;gap:.6rem;align-items:center;padding:.5rem 0;text-decoration:none;color:var(--ink);font-weight:700}
.rel-list a:hover span:last-child{text-decoration:underline;color:var(--quill)}

/* ---------- task page ---------- */
.task-head{max-width:52rem;margin-bottom:1.5rem}
.task-head .chips{margin-bottom:.6rem}
.facts{display:flex;flex-wrap:wrap;gap:.5rem 2rem;margin:1rem 0 1.1rem}
.facts div{display:flex;flex-direction:column}
.facts dt{font-size:.8rem;color:var(--ink-3);font-weight:700}
.facts dd{margin:0;font-weight:700}
.task-actions{display:flex;flex-wrap:wrap;gap:.5rem}
.task-actions [aria-pressed="true"]{background:var(--ok-soft);border-color:var(--ok);color:var(--ok)}
.task-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:2rem;align-items:start}
.block{margin-bottom:1.6rem}
.block-h{font-size:.95rem;font-weight:700;color:var(--ink-2);margin:0 0 .6rem;letter-spacing:.01em}
.context{background:var(--rule-2);border-radius:12px;padding:1rem 1.2rem}
.context .block-h{margin-bottom:.3rem}
.context>:last-child{margin-bottom:0}
.prompt{background:var(--sheet);border:1px solid var(--rule);border-left:4px solid var(--quill);border-radius:12px;padding:1.1rem 1.3rem}
.prompt-text{font-size:1.06rem}
.prompt-text>:last-child{margin-bottom:0}
.prompt-text ul{padding-left:1.2rem}
.reading-text{font-family:var(--font-read);line-height:var(--read-lh);background:var(--sheet);border:1px solid var(--rule);border-radius:12px;padding:1.2rem 1.4rem;max-height:32rem;overflow:auto}
.reading-text h3,.reading-text h2{font-family:var(--font-ui);font-size:1.17rem}
.reading-wc{font-family:var(--font-ui);font-size:.8rem;color:var(--ink-3);margin:0}
.questions{margin-top:.9rem}
.questions h3{font-size:1rem}
.questions ol{padding-left:1.3rem;margin-bottom:.4rem}
.questions li{margin:.35rem 0}
.questions .a{display:block;color:var(--ok);font-weight:700;margin-top:.1rem}
.step-list{padding-left:1.4rem;margin:0}
.step-list li{margin:.35rem 0;padding-left:.2rem}
.step-list li::marker{font-weight:700;color:var(--quill)}

.toolkit{border-top:1px solid var(--rule);padding-top:1.2rem}
.toolkit-hint{font-size:.9rem;color:var(--ink-2);margin-bottom:.7rem}
.tool-btns{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:.9rem}
.tool-btn{font:inherit;font-weight:700;font-size:.93rem;padding:.55rem 1rem;min-height:2.6rem;border-radius:999px;border:1px solid var(--rule);background:var(--sheet);color:var(--ink);cursor:pointer}
.tool-btn:hover{border-color:var(--ink-3)}
.tool-btn[aria-expanded="true"]{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.tool-teacher{border-style:dashed}
html:not([data-role="teacher"]) .tool-teacher{display:none}
.tool-panel{background:var(--sheet);border:1px solid var(--rule);border-radius:14px;padding:1.1rem 1.25rem;margin-bottom:1rem;animation:panel-in .18s ease-out}
.tool-panel h3{font-size:1.05rem}
.tool-panel h4{font-size:.85rem;color:var(--ink-3);margin:.9rem 0 .35rem}
.tool-panel h4:first-child{margin-top:0}
@keyframes panel-in{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}
.phrase-groups ul{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:.35rem}
.phrase{font:inherit;font-family:var(--font-read);font-size:.98rem;text-align:left;background:transparent;border:1px solid var(--rule);border-radius:8px;padding:.3rem .6rem;color:var(--ink);cursor:pointer;line-height:1.4}
.phrase:hover{background:linear-gradient(transparent 30%,var(--hl) 30%,var(--hl) 92%,transparent 92%);border-color:var(--ink-3)}
.vocab{margin:0;display:grid;gap:.15rem}
.vocab div{display:grid;grid-template-columns:minmax(7rem,30%) 1fr;gap:1rem;padding:.45rem 0;border-bottom:1px solid var(--rule-2)}
.vocab dt{font-weight:700}
.vocab dd{margin:0;color:var(--ink-2)}
.vocab .ex{display:block;font-family:var(--font-read);font-style:italic;color:var(--ink);font-size:.95rem}
.model-warn{font-size:.9rem;color:var(--warn);background:var(--warn-soft);border-radius:8px;padding:.5rem .8rem}
.model-text{font-family:var(--font-read);line-height:var(--read-lh);font-size:1.03rem}
.model-text>:last-child{margin-bottom:0}
.ann{cursor:help;background:linear-gradient(transparent 36%,var(--hl) 36%,var(--hl) 92%,transparent 92%)}
.ann sup{font-family:var(--font-ui);font-size:.68em;font-weight:700;color:var(--quill);margin-left:.1em}
.ann:focus,.ann.on{outline:2px solid var(--quill);outline-offset:1px}
.model-notes{font-size:.92rem;color:var(--ink-2);margin:1rem 0 0;padding:.8rem 0 0 1.3rem;border-top:1px dashed var(--rule)}
.model-notes li{margin:.3rem 0}
.model-notes li.on{color:var(--ink);background:var(--quill-soft);border-radius:6px}
.extension{background:var(--rule-2);border-radius:12px;padding:1rem 1.2rem;margin-top:1rem}
.extension>:last-child{margin-bottom:0}

/* the writing sheet: exercise-book paper */
.sheet-col{min-width:0}
.sheet-sticky{position:sticky;top:5rem}
.sheet-bar{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:.4rem}
.sheet-bar .block-h{margin:0}
.timer{display:flex;align-items:center;gap:.1rem;font-variant-numeric:tabular-nums}
.timer-val{font-weight:700;font-size:1.05rem;margin-right:.25rem;min-width:3.4rem;text-align:right}
.timer.running .timer-val{color:var(--quill)}
.timer.over .timer-val{color:var(--err)}
.sheet{--line:calc(1.06rem * 1.9);background:var(--sheet);border:1px solid var(--rule);border-radius:12px;position:relative;overflow:hidden}
.sheet::before{content:"";position:absolute;left:2.6rem;top:0;bottom:0;width:2px;background:var(--margin);opacity:.5;pointer-events:none;z-index:1}
.draft{display:block;width:100%;min-height:24rem;height:clamp(24rem,58vh,40rem);resize:vertical;border:0;border-radius:0;background:transparent;
  font-family:var(--font-read);font-size:1.06rem;line-height:var(--line);padding:calc(var(--line) * .5) 1.1rem calc(var(--line) * .5) 3.4rem;
  background-image:repeating-linear-gradient(to bottom,transparent 0,transparent calc(var(--line) - 1px),var(--rule-2) calc(var(--line) - 1px),var(--rule-2) var(--line));
  background-attachment:local;background-position:0 calc(var(--line) * .5 + 0.2rem)}
.draft:focus{outline:none}
.sheet:focus-within{border-color:var(--quill);box-shadow:0 0 0 3px color-mix(in srgb,var(--quill) 22%,transparent)}
.sheet-foot{display:flex;justify-content:space-between;align-items:center;gap:1rem;margin:.5rem 0 .6rem;font-size:.9rem;color:var(--ink-2)}
.wc{display:flex;align-items:center;gap:.3rem;flex-wrap:wrap}
.wc-num{font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums}
.wc-bar{display:inline-block;width:5rem;height:.4rem;border-radius:4px;background:var(--rule-2);margin-left:.4rem;overflow:hidden}
.wc-bar span{display:block;height:100%;width:0;background:var(--ink-3);border-radius:4px;transition:width .2s}
.wc.in-range .wc-bar span{background:var(--ok)} .wc.over .wc-bar span{background:var(--warn)}
.save-state{font-size:.85rem;color:var(--ink-3)}
.sheet-actions{display:flex;flex-wrap:wrap;gap:.45rem}
.check-panel{margin-top:1rem;background:var(--sheet);border:1px solid var(--rule);border-radius:14px;padding:1rem 1.2rem}
.check-panel h3{font-size:1.02rem}
.check-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.5rem;margin:0 0 .9rem}
.check-stats div{background:var(--rule-2);border-radius:10px;padding:.5rem .7rem}
.check-stats dt{font-size:.75rem;color:var(--ink-3);font-weight:700}
.check-stats dd{margin:0;font-weight:700;font-size:1.1rem}
.check-tips{list-style:none;padding:0;margin:0}
.check-tips li{padding:.45rem 0 .45rem 1.6rem;position:relative;border-top:1px solid var(--rule-2);font-size:.95rem}
.check-tips li::before{content:"";position:absolute;left:.25rem;top:.95rem;width:.6rem;height:.6rem;border-radius:50%;background:var(--ink-3)}
.check-tips li.good::before{background:var(--ok)} .check-tips li.warn::before{background:var(--warn)}
.check-note{font-size:.82rem;color:var(--ink-3);margin:.6rem 0 0}
.selfcheck{margin-top:1rem;border-top:1px solid var(--rule);padding-top:.6rem}
.selfcheck summary{cursor:pointer;font-weight:700;padding:.4rem 0}
.checklist{list-style:none;padding:0;margin:.3rem 0 0}
.checklist li{padding:.3rem 0}
.checklist label{display:flex;gap:.6rem;align-items:flex-start;cursor:pointer}
.checklist input{margin-top:.25rem}

/* charts (IELTS Task 1) */
.chart{margin:0 0 1rem}
.chart-title{font-weight:700;font-size:.98rem;margin-bottom:.5rem}
.chart-plot svg{width:100%;height:auto;display:block;font-family:var(--font-ui)}
.chart .grid{stroke:var(--rule-2);stroke-width:1}
.chart .axis{stroke:var(--ink-3);stroke-width:1}
.chart .tick,.chart .unit{fill:var(--ink-3);font-size:12px}
.chart .lab{fill:var(--ink-2);font-size:12.5px}
.chart .pielab{fill:#fff;font-size:13px;font-weight:700;paint-order:stroke;stroke:rgba(0,0,0,.35);stroke-width:2px}
.chart .s0{fill:var(--s0);color:var(--s0)}.chart .s1{fill:var(--s1);color:var(--s1)}.chart .s2{fill:var(--s2);color:var(--s2)}
.chart .s3{fill:var(--s3);color:var(--s3)}.chart .s4{fill:var(--s4);color:var(--s4)}.chart .s5{fill:var(--s5);color:var(--s5)}
.chart g.s0,.chart g.s1,.chart g.s2,.chart g.s3,.chart g.s4,.chart g.s5{fill:none}
.chart .line{fill:none;stroke:currentColor;stroke-width:2;stroke-linejoin:round}
.chart .mk circle,.chart .mk rect,.chart .mk path{fill:currentColor;stroke:var(--sheet);stroke-width:2}
.chart .slice{stroke:var(--sheet);stroke-width:2}
.chart .hatch{fill:url(#qd-hatch);pointer-events:none}
.chart .hatch-line{stroke:rgba(255,255,255,.55);stroke-width:2}
.chart-legend{list-style:none;display:flex;flex-wrap:wrap;gap:.4rem 1.2rem;padding:0;margin:.5rem 0 0;font-size:.88rem;color:var(--ink-2)}
.chart-legend li{display:flex;align-items:center;gap:.4rem}
.sw{width:.9rem;height:.9rem;border-radius:3px;display:inline-block}
.sw.s0{background:var(--s0)}.sw.s1{background:var(--s1)}.sw.s2{background:var(--s2)}.sw.s3{background:var(--s3)}.sw.s4{background:var(--s4)}.sw.s5{background:var(--s5)}
.sw.hatched{background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.55) 0 2px,transparent 2px 5px)}
.sw-mk{width:.95rem;height:.95rem}
.sw-mk.s0{color:var(--s0)}.sw-mk.s1{color:var(--s1)}.sw-mk.s2{color:var(--s2)}.sw-mk.s3{color:var(--s3)}
.sw-mk *{fill:currentColor}
.chart-table summary{cursor:pointer;font-size:.88rem;color:var(--ink-2);font-weight:700;margin-top:.5rem}
.chart-table table,.chart>.table-wrap table{font-size:.9rem;margin-top:.4rem}
table.data td{font-variant-numeric:tabular-nums}
.chart-source,.chart-unit{font-size:.8rem;color:var(--ink-3);margin:.3rem 0 0}

/* dialog */
.dlg{border:0;border-radius:16px;padding:0;max-width:30rem;width:calc(100% - 2rem);background:var(--sheet);color:var(--ink);box-shadow:0 24px 60px rgba(10,20,30,.25)}
.dlg::backdrop{background:rgba(15,22,30,.45)}
.dlg-in{padding:1.4rem 1.5rem}
.dlg h2{font-size:1.25rem}
.dlg fieldset{border:0;padding:0;margin:0 0 1rem}
.dlg legend{font-weight:700;font-size:.9rem;color:var(--ink-2);margin-bottom:.4rem}
.dlg .check{padding:.25rem 0}
.radio{display:flex;gap:.7rem;align-items:flex-start;padding:.6rem .7rem;border:1px solid var(--rule);border-radius:10px;margin-bottom:.45rem;cursor:pointer}
.radio:has(input:checked){border-color:var(--quill);background:var(--quill-soft)}
.radio input{margin-top:.25rem}
.radio small{display:block;color:var(--ink-2)}
.dlg-actions{display:flex;justify-content:flex-end;gap:.5rem}

/* classroom mode */
.classroom{position:fixed;inset:0;z-index:300;background:var(--paper);display:flex;flex-direction:column;--cr-size:1.6rem}
.cr-top{display:flex;align-items:center;gap:1rem;padding:.7rem 1.2rem;border-bottom:1px solid var(--rule);flex-wrap:wrap}
.cr-brand{display:flex;align-items:center;gap:.5rem;font-weight:700;color:var(--ink-2)}
.cr-timer{font-size:2rem;font-weight:700;font-variant-numeric:tabular-nums;margin-left:auto}
.cr-timer.over{color:var(--err)}
.cr-ctrl{display:flex;gap:.4rem;flex-wrap:wrap}
.cr-body{flex:1;overflow:auto;padding:2rem clamp(1rem,5vw,5rem);font-size:var(--cr-size);line-height:1.5;max-width:70rem;margin:0 auto;width:100%}
.cr-body h2{font-size:1.5em}
.cr-context{color:var(--ink-2)}
.cr-prompt{background:var(--sheet);border-left:6px solid var(--quill);padding:.6em 1em;border-radius:12px}
.cr-prompt>:last-child{margin-bottom:0}
.cr-words{color:var(--ink-3);font-weight:700;margin-top:.6em}
.cr-phrases{display:grid;grid-template-columns:repeat(auto-fit,minmax(16em,1fr));gap:1em;margin-top:1em;font-size:.8em}
.cr-phrases h3{font-size:.9em;color:var(--ink-3)}
.cr-phrases ul{margin:0;padding-left:1.1em}

/* ---------- hubs ---------- */
.hub-quick{background:var(--sheet);border:1px solid var(--rule);border-radius:16px;padding:1.3rem 1.4rem;margin-bottom:2rem}
.hub-quick h2{font-size:1.25rem}
.level-pick{display:flex;flex-wrap:wrap;gap:.5rem}
.level-pick .btn{min-width:3.6rem}
.hub-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:2rem 2.5rem}
.hub-block h2{font-size:1.2rem}
.hub-block h2 a{color:var(--ink);text-decoration:none}
.hub-block h2 a:hover{text-decoration:underline}
.hub-block>p{color:var(--ink-2)}
.how{margin-top:3rem;max-width:48rem}
.how-list{padding-left:1.2rem}
.how-list li{margin:.6rem 0}
.drafts-sec,.progress-sec,.findlevel,.path{margin-bottom:2.5rem}
.draft-list{list-style:none;padding:0;margin:0;border-top:1px solid var(--rule)}
.draft-list li{display:flex;gap:1rem;align-items:center;padding:.8rem .25rem;border-bottom:1px solid var(--rule);flex-wrap:wrap}
.draft-list .dl-main{flex:1;min-width:12rem}
.draft-list .dl-title{font-weight:700}
.draft-list .dl-meta{font-size:.85rem;color:var(--ink-3)}
.draft-list .dl-act{display:flex;gap:.3rem}
.empty-line{color:var(--ink-3)}
.progress-ladder{list-style:none;padding:0;margin:0;display:grid;gap:.5rem;max-width:36rem}
.progress-ladder li{display:grid;grid-template-columns:3rem 1fr 4.5rem;align-items:center;gap:.8rem}
.pl-bar{height:.55rem;background:var(--rule-2);border-radius:6px;overflow:hidden}
.pl-bar span{display:block;height:100%;width:0;background:var(--quill);border-radius:6px}
.pl-n{font-size:.88rem;color:var(--ink-2);text-align:right;font-variant-numeric:tabular-nums}
.can-do{display:grid;gap:.5rem;max-width:44rem}
.can-do .check{align-items:flex-start}
.can-do .check input{margin-top:.25rem}
.cando-result{font-weight:700;color:var(--quill);min-height:1.5em}
.path-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.5rem}
.path-col h3{font-size:1.05rem;display:flex;gap:.5rem;align-items:center}
.path-col ol{padding-left:1.2rem;margin:0}
.path-col li{margin:.3rem 0}

/* settings */
.settings section{border-top:1px solid var(--rule);padding:1.2rem 0 .6rem}
.settings h2{font-size:1.15rem}
.seg{border:0;padding:0;margin:0 0 1rem}
.seg legend{font-weight:700;font-size:.92rem;margin-bottom:.35rem;color:var(--ink-2)}
.seg-opts{display:inline-flex;flex-wrap:wrap;border:1px solid var(--rule);border-radius:10px;overflow:hidden;background:var(--sheet)}
.seg-opts label{position:relative}
.seg-opts input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer;width:100%;height:100%}
.seg-opts span{display:block;padding:.55rem 1rem;font-weight:700;font-size:.92rem;color:var(--ink-2);border-right:1px solid var(--rule);min-height:2.6rem}
.seg-opts label:last-child span{border-right:0}
.seg-opts input:checked+span{background:var(--ink);color:var(--paper)}
.seg-opts input:focus-visible+span{outline:3px solid var(--quill);outline-offset:-3px}
.preview-text{font-family:var(--font-read);line-height:var(--read-lh);background:var(--sheet);border:1px dashed var(--rule);border-radius:10px;padding:.8rem 1rem;max-width:36rem}
.file-btn{cursor:pointer}

/* forms, notices, search */
.form{display:grid;gap:.9rem;max-width:36rem}
.form label>span{display:block;font-weight:700;font-size:.9rem;margin-bottom:.25rem}
.hp{position:absolute;left:-9999px;height:0;overflow:hidden}
.notice{border-radius:12px;padding:.8rem 1.1rem;margin-bottom:1rem}
.notice ul{margin:0;padding-left:1.1rem}
.notice.ok{background:var(--ok-soft);color:var(--ok)}
.notice.err{background:var(--err-soft);color:var(--err)}
.searchbox{display:flex;gap:.5rem;margin-bottom:1rem}
.searchbox input{flex:1}
.search-results{list-style:none;padding:0;margin:0}
.search-results li{padding:.8rem 0;border-bottom:1px solid var(--rule)}
.search-results a{display:flex;gap:.5rem;align-items:center;text-decoration:none;font-weight:700;font-size:1.08rem}
.search-results p{margin:.2rem 0 0;color:var(--ink-2)}
.sr-kind{font-size:.75rem;font-weight:700;color:var(--ink-3);border:1px solid var(--rule);border-radius:4px;padding:0 .35rem}
.notfound{text-align:center}
.notfound .searchbox{max-width:28rem;margin:1.5rem auto}
.notfound .actions-row{justify-content:center}
.nf-code{font-size:5rem;font-weight:700;color:var(--rule);margin:0;line-height:1}

/* ads: only rendered when AdSense is configured */
.ad{margin:2rem 0;padding-top:.3rem;border-top:1px solid var(--rule-2);min-height:100px}
.ad-label{display:block;font-size:.72rem;color:var(--ink-3);margin-bottom:.3rem}

/* ---------- footer ---------- */
.foot{border-top:1px solid var(--rule);margin-top:3rem;background:var(--sheet)}
.foot-in{max-width:74rem;margin:0 auto;padding:2.5rem 1.25rem 1rem;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2.4fr);gap:2rem}
.foot-brand p{color:var(--ink-2);margin:.5rem 0 0;font-size:.95rem}
.foot-credit{font-size:.85rem!important}
.foot-cols{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1.5rem}
.foot-cols h2{font-size:.9rem;color:var(--ink-2);margin-bottom:.6rem}
.foot-cols ul{list-style:none;margin:0;padding:0}
.foot-cols li{margin:.3rem 0}
.foot-cols a{color:var(--ink);text-decoration:none;font-size:.93rem}
.foot-cols a:hover{text-decoration:underline;color:var(--quill)}
.foot-small{max-width:74rem;margin:0 auto;padding:1rem 1.25rem 1.5rem;font-size:.82rem;color:var(--ink-3)}

/* bottom tab bar (phones, small tablets) */
.tabbar{display:none}
.toast{position:fixed;left:50%;bottom:calc(var(--tabbar-h) + 1.2rem);transform:translateX(-50%);background:var(--ink);color:var(--paper);padding:.6rem 1.1rem;border-radius:10px;
  font-weight:700;font-size:.92rem;z-index:400;box-shadow:0 8px 24px rgba(0,0,0,.2);max-width:calc(100% - 2rem)}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .task-grid{grid-template-columns:minmax(0,1fr)}
  .sheet-sticky{position:static}
  .draft{height:clamp(18rem,50vh,30rem);min-height:18rem}
}
@media (max-width:960px){
  :root{--tabbar-h:calc(3.9rem + env(safe-area-inset-bottom))}
  .mainnav{display:none}
  .tabbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:60;background:color-mix(in srgb,var(--sheet) 96%,transparent);backdrop-filter:blur(8px);
    border-top:1px solid var(--rule);padding:.25rem .25rem calc(.25rem + env(safe-area-inset-bottom))}
  .tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;gap:.1rem;padding:.35rem 0;text-decoration:none;color:var(--ink-3);font-size:.72rem;font-weight:700;border-radius:10px;min-height:3.2rem;justify-content:center}
  .tabbar a[aria-current="page"]{color:var(--quill)}
  .tabbar a[aria-current="page"] .ic{stroke-width:2.3}
  .foot-in{grid-template-columns:minmax(0,1fr)}
  .foot-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
  .article-grid{grid-template-columns:minmax(0,1fr)}
  .toc{position:static;border-left:0;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);padding:.8rem 0}
  .filter-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .filter-grid .grow{grid-column:1/-1}
  .filter-grid .check{grid-column:1/2}
  .filter-grid .btn{grid-column:2}
  .path-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  .wrap{padding-inline:1rem}
  .top-in{padding:.5rem 1rem;gap:.5rem}
  .brand{font-size:1.1rem}
  .role-pill{display:none}
  .hub-grid,.exam-doors,.rel-list,.path-grid{grid-template-columns:minmax(0,1fr)}
  .filter-grid{grid-template-columns:minmax(0,1fr)}
  .filter-grid .check,.filter-grid .btn{grid-column:1}
  .filter-grid .btn{justify-self:stretch}
  .check-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .vocab div{grid-template-columns:minmax(0,1fr);gap:.1rem}
  .task-actions .btn{flex:1 1 auto}
  .sheet-actions .btn{flex:1 1 40%}
  .reading-text{padding:1rem;max-height:none}
  .prompt{padding:1rem}
  .sheet::before{left:1.8rem}
  .draft{padding-left:2.4rem;padding-right:.8rem}
  .foot-cols{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .cr-top{gap:.5rem}
  .cr-timer{font-size:1.5rem}
  .classroom{--cr-size:1.2rem}
  .seg-opts span{padding:.55rem .75rem}
}
/* =====================================================================
   PASTEL CARDS (design direction B, v1.2)
   Soft rounded cards on a cool grey page, one dark hero tile, pastel
   tints per section and level. Loaded after the base rules so it wins.
   ===================================================================== */
.t-mint{--tint:var(--mint)} .t-sky{--tint:var(--sky)} .t-lav{--tint:var(--lav)}
.t-peach{--tint:var(--peach)} .t-butter{--tint:var(--butter)} .t-rose{--tint:var(--rose)}

body{font-size:1rem}
h1,h2,h3{font-weight:800;letter-spacing:-.018em}
h1{font-size:clamp(1.85rem,1.35rem + 2vw,2.6rem);line-height:1.12}
h2{font-size:1.35rem}
.wrap{max-width:80rem;padding-inline:clamp(1rem,3.5vw,2.5rem)}
.wrap.narrow{max-width:50rem}
.page-pad{padding-top:.75rem}
.lead{font-size:1.06rem}
mark{background:linear-gradient(transparent 40%,var(--hl) 40%,var(--hl) 92%,transparent 92%)}

/* header */
.top{background:color-mix(in srgb,var(--paper) 90%,transparent);border-bottom:0}
.top-in{max-width:80rem;padding:.75rem clamp(1rem,3.5vw,2.5rem);gap:1rem}
.brand{font-weight:800;font-size:1.32rem;gap:.6rem}
.logo-mark .lm-bg{fill:var(--hero)} .logo-mark .lm-vane{fill:#fff} .logo-mark .lm-spine{stroke:var(--hero)} .logo-mark .lm-hl{stroke:var(--accent)}
.mainnav{background:var(--sheet);border-radius:999px;padding:.3rem;box-shadow:var(--shadow);gap:.1rem;margin-left:.75rem}
.mainnav a{border-radius:999px;padding:.45rem .95rem;font-size:.95rem;color:var(--ink-2)}
.mainnav a:hover{background:var(--rule-2);color:var(--ink)}
.mainnav a[aria-current="page"]{background:var(--ink);color:var(--paper)}
.top-tools{gap:.5rem}
.icon-btn{width:2.75rem;height:2.75rem;border-radius:14px;background:var(--sheet);color:var(--ink);box-shadow:var(--shadow)}
.icon-btn:hover{background:var(--sheet);color:var(--ink);box-shadow:var(--shadow-up)}
.icon-btn[aria-current="page"]{background:var(--ink);color:var(--paper)}
.announce .icon-btn{box-shadow:none;background:transparent}
.role-pill{background:var(--sheet);border:0;box-shadow:var(--shadow);padding:.55rem 1rem;color:var(--ink);font-size:.88rem}
.role-pill:hover{box-shadow:var(--shadow-up);color:var(--ink)}
.announce{background:var(--butter);border-bottom:0;font-weight:700}

.crumbs ol{font-size:.86rem;margin-bottom:.6rem}

/* buttons, inputs, chips */
.btn{border:0;border-radius:14px;font-weight:800;min-height:2.9rem;padding:.6rem 1.2rem}
.btn-ghost{background:var(--sheet);color:var(--ink);box-shadow:var(--shadow)}
.btn-ghost:hover{background:var(--sheet);color:var(--ink);box-shadow:var(--shadow-up)}
.btn-quiet{box-shadow:none}
.btn-sun{background:var(--accent);color:#1E2440}
.btn-sun:hover{background:#FFE48F;color:#1E2440}
.link-btn{font-weight:800}
input[type=text],input[type=email],input[type=search],input[type=password],input[type=number],input[type=date],input[type=url],select,textarea{
  border:1.5px solid var(--rule);border-radius:14px}
.chip{border:0;box-shadow:var(--shadow);min-height:2.5rem;padding:.35rem 1rem;color:var(--ink)}
.chip:hover{box-shadow:var(--shadow-up)}
.chip.on{background:var(--ink);color:var(--paper)}
.lvl{border:0;border-radius:999px;min-width:2.7rem;height:1.75rem;font-weight:800;font-size:.8rem;background:var(--lt,var(--rule-2))}
.lvl-a1{--lt:var(--mint)}.lvl-a2{--lt:var(--sky)}.lvl-b1{--lt:var(--butter)}.lvl-b2{--lt:var(--peach)}.lvl-c1{--lt:var(--lav)}.lvl-c2{--lt:var(--rose)}
.tile-meta .lvl,.tile-role .lvl,.level-tile .lvl{background:var(--sheet)}
.tag{border:0;background:color-mix(in srgb,var(--sheet) 70%,transparent);padding:.2rem .65rem;border-radius:999px;font-size:.84rem;color:var(--ink)}
.tag:hover{background:var(--sheet)}

/* section banners: every page head becomes a tinted tile with a picture */
.sec-write{--tint:var(--butter);--emo:"✍️"} .sec-exams{--tint:var(--sky);--emo:"🎓"} .sec-guides{--tint:var(--mint);--emo:"🧭"}
.sec-mistakes{--tint:var(--rose);--emo:"🚩"} .sec-teachers{--tint:var(--lav);--emo:"🧑‍🏫"} .sec-students{--tint:var(--mint);--emo:"🎒"}
.sec-settings{--tint:var(--sky);--emo:"⚙️"} .sec-search{--tint:var(--lav);--emo:"🔍"} .sec-contact{--tint:var(--peach);--emo:"💌"}
.sec-about{--tint:var(--butter);--emo:"👋"} .sec-privacy,.sec-terms,.sec-cookies{--tint:var(--sky);--emo:"📄"}
.lv-a1{--tint:var(--mint);--emo:"🌱"} .lv-a2{--tint:var(--sky);--emo:"✉️"} .lv-b1{--tint:var(--butter);--emo:"📖"}
.lv-b2{--tint:var(--peach);--emo:"🖋️"} .lv-c1{--tint:var(--lav);--emo:"⭐"} .lv-c2{--tint:var(--rose);--emo:"👑"}
.page-head{position:relative;max-width:none;background:var(--tint,var(--sheet));border-radius:var(--radius-l);padding:1.6rem clamp(5.5rem,14vw,10rem) 1.6rem 1.8rem;
  margin:0 0 1.5rem;min-height:8rem;display:flex;flex-direction:column;justify-content:center}
.page-head::after{content:var(--emo,"");position:absolute;right:clamp(1rem,3.5vw,2.75rem);top:50%;transform:translateY(-50%) rotate(-6deg);
  font-size:clamp(2.6rem,1.8rem + 3.2vw,4.6rem);line-height:1}
.page-head h1{margin-bottom:.3em}
.page-head .lead{margin:0;color:var(--ink-2);max-width:44rem}
.page-head>.meta-row{margin:.7rem 0 0;color:var(--ink-2)}
.page-head .actions-row{margin:1rem 0 0}
.level-head>.meta-row:first-child{margin:0 0 .5rem}
.page-article .page-head::after{content:none}
.page-article .page-head{padding-right:1.8rem}

/* ---------- home: bento ---------- */
.home-wrap{padding-top:.5rem;padding-bottom:1rem}
.bento{display:grid;grid-template-columns:1.45fr 1fr 1fr;grid-auto-rows:minmax(12.5rem,auto);gap:1rem}
.tile{position:relative;overflow:hidden;border-radius:var(--radius-l);padding:1.5rem;background:var(--tint,var(--sheet));color:var(--ink);text-decoration:none;
  font:inherit;text-align:left;border:0;cursor:pointer;transition:transform .15s,box-shadow .15s}
a.tile:hover,button.tile:hover{color:var(--ink);transform:translateY(-3px);box-shadow:var(--shadow-up)}
.tile-hero{grid-row:span 2;background:var(--hero);color:var(--hero-ink);display:flex;flex-direction:column;justify-content:space-between;gap:1.5rem;cursor:auto;min-height:26rem;padding:2rem}
.hero-copy{position:relative;z-index:1;max-width:30rem}
.tile-hero h1{font-size:clamp(2rem,1.4rem + 2.4vw,3.2rem);line-height:1.06;letter-spacing:-.025em;margin:0 0 .7rem;color:var(--hero-ink)}
.tile-hero p{color:var(--hero-ink-2);font-size:1.08rem;margin:0;max-width:22rem}
.hero-cta{position:relative;z-index:1;display:flex;flex-wrap:wrap;align-items:center;gap:.6rem 1.2rem}
.hero-cta .btn{font-size:1.05rem;padding:.85rem 1.4rem;border-radius:16px}
.hero-link{color:var(--hero-ink);font-weight:800;text-decoration:none;display:inline-flex;align-items:center;gap:.35rem;padding:.5rem 0}
.hero-link:hover{color:var(--accent);text-decoration:underline}
.hero-art{position:absolute;right:-2rem;bottom:-1.75rem;width:min(34%,15rem);pointer-events:none}
.tile-role{display:flex;flex-direction:column;justify-content:space-between;gap:1rem}
.tile-emoji{font-size:3rem;line-height:1;display:block}
.tile-title{display:block;font-size:1.38rem;font-weight:800;line-height:1.2;letter-spacing:-.015em}
.tile-title-s{font-size:1.15rem;margin:.1rem 0 .35rem}
.tile-text{display:block;color:var(--ink-2);margin-top:.2rem;font-size:.97rem}
.tile-kicker{display:block;font-size:.8rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-2)}
.tile-meta{display:flex;align-items:center;gap:.35rem;color:var(--ink-2);font-size:.88rem;font-weight:700}
.tile-arrow{position:absolute;top:1.15rem;right:1.15rem;width:2.6rem;height:2.6rem;border-radius:50%;background:var(--sheet);display:grid;place-items:center;color:var(--ink);transition:transform .15s}
.tile:hover .tile-arrow{transform:translateX(3px)}
/* role-aware tiles */
html:not([data-role]) [data-show="student"],html:not([data-role]) [data-show="teacher"],html:not([data-role]) [data-show="any"],
[data-role="student"] [data-show="none"],[data-role="student"] [data-show="teacher"],
[data-role="teacher"] [data-show="none"],[data-role="teacher"] [data-show="student"]{display:none}
.role-switch{text-align:right;margin:.5rem 0 0;font-size:.9rem}
.welcome:focus-visible{outline-offset:3px}

.sec-head{display:flex;justify-content:space-between;align-items:baseline;gap:1rem;margin:2rem 0 1rem}
.sec-head h2{margin:0;font-size:1.45rem}
.sec-head a{font-weight:800;text-decoration:none}
.sec-head a:hover{text-decoration:underline}
.level-tiles{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:1rem}
.level-tile{display:flex;flex-direction:column;justify-content:space-between;gap:1.2rem;min-height:10rem;padding:1.2rem;border-radius:24px;background:var(--tint);
  color:var(--ink);text-decoration:none;transition:transform .15s,box-shadow .15s;height:100%}
.level-tile:hover{color:var(--ink);transform:translateY(-3px);box-shadow:var(--shadow-up)}
.level-tile .tile-emoji{font-size:2rem}
.level-tile b{display:block;font-size:2.3rem;font-weight:800;line-height:1;letter-spacing:-.03em}
.lt-name{display:block;font-weight:800;margin-top:.25rem}
.level-tile small{display:block;color:var(--ink-2);font-weight:700;font-size:.85rem}
.mini-row{list-style:none;margin:1rem 0 0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem}
.mini{display:flex;align-items:center;gap:1rem;background:var(--sheet);border-radius:22px;padding:1rem 1.15rem;text-decoration:none;color:var(--ink);box-shadow:var(--shadow);height:100%;transition:transform .15s,box-shadow .15s}
.mini:hover{color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-up)}
.mini-ic{flex:none;width:3.4rem;height:3.4rem;border-radius:16px;display:grid;place-items:center;font-size:1.65rem;background:var(--tint)}
.mini-title{display:block;font-weight:800;font-size:1.08rem}
.mini-text{display:block;color:var(--ink-2);font-size:.92rem}

/* ---------- task cards (library, level pages, exams) ---------- */
.filters{background:var(--sheet);border:0;border-radius:24px;padding:1.1rem 1.2rem;box-shadow:var(--shadow);margin-bottom:1.25rem}
.filters .chip{box-shadow:none;background:var(--paper)}
.filters .chip.on{background:var(--ink)}
.filter-grid label>span{font-weight:800;color:var(--ink-2)}
.result-count{font-weight:700;margin-bottom:.9rem}
.task-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,17.5rem),1fr));gap:1rem;border:0;margin:0 0 1.25rem}
.task-row,.task-list.compact .task-row{position:relative;display:flex;flex-direction:column;gap:.7rem;background:var(--sheet);border:0;border-radius:24px;padding:1.15rem 1.25rem 1.1rem;
  box-shadow:var(--shadow);transition:transform .15s,box-shadow .15s}
.task-row:hover{transform:translateY(-3px);box-shadow:var(--shadow-up)}
.task-row .lvl{margin:0}
.tc-top{display:flex;align-items:center;justify-content:space-between;gap:.5rem}
.tc-pic{width:3rem;height:3rem;border-radius:15px;display:grid;place-items:center;font-size:1.5rem;background:var(--tint,var(--rule-2))}
.task-row:has(.lvl-a1){--tint:var(--mint)} .task-row:has(.lvl-a2){--tint:var(--sky)} .task-row:has(.lvl-b1){--tint:var(--butter)}
.task-row:has(.lvl-b2){--tint:var(--peach)} .task-row:has(.lvl-c1){--tint:var(--lav)} .task-row:has(.lvl-c2){--tint:var(--rose)}
.task-row-main{display:flex;flex-direction:column;flex:1}
.task-row h2,.task-row h3{font-size:1.1rem;line-height:1.3;margin:0 0 .3rem;font-weight:800}
.task-row h2 a,.task-row h3 a{color:var(--ink)}
.task-row h2 a::after,.task-row h3 a::after{content:"";position:absolute;inset:0;border-radius:inherit}
.task-row h2 a:hover,.task-row h3 a:hover{text-decoration:none;color:var(--ink)}
.task-row:has(a:focus-visible){outline:3px solid var(--quill);outline-offset:2px}
.task-row a:focus-visible{outline:0}
.task-row p{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:.94rem;margin:0 0 .6rem}
.task-row p.meta-row{display:flex;-webkit-line-clamp:unset;overflow:visible;margin:auto 0 0;font-size:.8rem;gap:.3rem}
.task-row .meta-row>span{background:var(--paper);border-radius:999px;padding:.12rem .55rem;color:var(--ink-2);font-weight:700}
.task-row .meta-row>.tag-read{color:var(--quill)}
.task-row .meta-row>.done-tag{background:var(--ok-soft);color:var(--ok)}
.task-row .meta-row>.done-tag[hidden]{display:none}
.type-group{margin:1.75rem 0}
.type-group h2{font-size:1.25rem;margin-bottom:.8rem}
.pager a,.pager span{border:0;border-radius:12px;background:var(--sheet);box-shadow:var(--shadow);color:var(--ink)}
.pager span{background:var(--ink);color:var(--paper)}
.empty{border:2px dashed var(--rule);border-radius:24px}
.level-nav{border-top:0;margin-top:2rem;padding:0;gap:1rem}
.level-nav a{background:var(--sheet);box-shadow:var(--shadow);border-radius:14px;padding:.65rem 1.1rem;text-decoration:none;color:var(--ink)}
.level-nav a:hover{box-shadow:var(--shadow-up)}
.faq details,.exam-intro{background:var(--sheet);border:0;border-radius:18px;padding:.15rem 1.2rem;margin-bottom:.6rem;box-shadow:var(--shadow);max-width:48rem}
.faq summary,.exam-intro>summary{font-weight:800;font-family:var(--font-ui)}
.exam-intro[open]{padding-bottom:1rem}
.level-intro{margin-top:1.5rem}

/* articles */
.article-group h2{color:var(--ink);font-size:1.25rem;margin-bottom:.8rem}
.article-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,19rem),1fr));gap:1rem;border:0}
.article-list li{border:0}
.article-list a{height:100%;background:var(--sheet);border-radius:22px;padding:1.15rem 1.25rem;box-shadow:var(--shadow);gap:.35rem;align-content:start;transition:transform .15s,box-shadow .15s}
.article-list a:hover{transform:translateY(-3px);box-shadow:var(--shadow-up)}
.article-list a:hover .al-title{text-decoration:none;color:var(--ink)}
.al-title{font-weight:800;line-height:1.3}
.al-sum{font-size:.94rem;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.al-meta{margin-top:.3rem}
.article-grid{gap:2rem}
.toc{background:var(--sheet);border:0;border-radius:20px;padding:1rem 1.15rem;box-shadow:var(--shadow)}
.related{border-top:0;padding-top:0}
.rel-list a{background:var(--sheet);border-radius:16px;padding:.7rem .9rem;box-shadow:var(--shadow)}
.rel-list{gap:.6rem}
.prose{font-size:1.05rem}
.prose h2,.prose h3,.prose h4{font-weight:800}
.callout{border-radius:18px;border:0;background:var(--sheet);box-shadow:var(--shadow)}
.callout-tip{border-left:0;background:var(--sky);box-shadow:none}
.callout-note{background:var(--rule-2);box-shadow:none}
.callout-wrong{border-left:0;background:var(--err-soft);box-shadow:none}
.callout-right{border-left:0;background:var(--ok-soft);box-shadow:none}
.callout-example{border-left:0;background:var(--butter);box-shadow:none;border-radius:18px}
.callout-box{background:var(--lav);box-shadow:none}

/* exams landing */
.exam-doors{gap:1rem}
.exam-door{position:relative;border:0;border-radius:var(--radius-l);background:var(--tint,var(--sheet));padding:1.5rem 1.6rem;gap:.4rem;transition:transform .15s,box-shadow .15s}
.exam-door:hover{border:0;transform:translateY(-3px);box-shadow:var(--shadow-up);color:var(--ink)}
.exam-door .tile-emoji{margin-bottom:.4rem}
.exam-name{font-weight:800;font-size:1.45rem}
.exam-n{color:var(--ink);font-weight:800}

/* ---------- task page ---------- */
.task-head{position:relative;max-width:none;background:var(--tint,var(--sheet));border-radius:var(--radius-l);padding:1.6rem clamp(5.5rem,14vw,10rem) 1.5rem 1.8rem;margin-bottom:1.5rem}
.task-head:has(.lvl-a1){--tint:var(--mint)} .task-head:has(.lvl-a2){--tint:var(--sky)} .task-head:has(.lvl-b1){--tint:var(--butter)}
.task-head:has(.lvl-b2){--tint:var(--peach)} .task-head:has(.lvl-c1){--tint:var(--lav)} .task-head:has(.lvl-c2){--tint:var(--rose)}
.head-pic{position:absolute;right:clamp(1rem,3.5vw,2.75rem);top:1.5rem;font-size:clamp(2.6rem,1.8rem + 3.2vw,4.6rem);line-height:1}
.task-head .lead{color:var(--ink-2)}
.task-head .lvl{background:var(--sheet)}
.facts{gap:.6rem}
.facts div{background:var(--sheet);border-radius:14px;padding:.45rem .85rem}
.facts dt{color:var(--ink-2)}
.task-actions .btn-ghost{box-shadow:none}
.task-grid{gap:1.5rem}
.block-h{font-weight:800;color:var(--ink);font-size:1rem}
.context{background:var(--sky);border-radius:20px}
.prompt{border:0;border-radius:22px;box-shadow:var(--shadow);padding:1.25rem 1.4rem;position:relative}
.prompt::before{content:"";position:absolute;left:0;top:1.3rem;bottom:1.3rem;width:5px;border-radius:0 5px 5px 0;background:var(--quill)}
.reading-text{border:0;border-radius:22px;box-shadow:var(--shadow)}
.toolkit{border-top:0;background:var(--sheet);border-radius:22px;padding:1.2rem 1.25rem;box-shadow:var(--shadow)}
.tool-btn{border:0;background:var(--paper);font-weight:800;min-height:2.7rem}
.tool-btn:hover{background:var(--rule-2)}
.tool-btn[aria-expanded="true"]{background:var(--ink);color:var(--paper)}
.tool-teacher{border:2px dashed var(--rule);background:transparent}
.tool-panel{border:0;background:var(--paper);border-radius:18px}
.phrase{background:var(--sheet);border:0;border-radius:12px;box-shadow:var(--shadow)}
.extension{background:var(--lav);border-radius:20px}
.sheet{border:0;border-radius:22px;box-shadow:var(--shadow)}
.sheet::before{background:var(--margin);opacity:.7}
.sheet:focus-within{box-shadow:0 0 0 3px color-mix(in srgb,var(--quill) 35%,transparent),var(--shadow)}
.check-panel{border:0;border-radius:22px;box-shadow:var(--shadow)}
.check-stats div{background:var(--paper);border-radius:14px}
.wc-bar{height:.5rem;border-radius:999px}
.dlg{border-radius:26px}
.radio{border:1.5px solid var(--rule);border-radius:16px}
.cr-prompt{border-left:0;border-radius:22px;box-shadow:var(--shadow)}

/* ---------- hubs: teachers, students ---------- */
.hub-quick{border:0;border-radius:var(--radius-l);background:var(--hero);color:var(--hero-ink);padding:1.5rem 1.6rem}
.hub-quick h2{color:var(--hero-ink)}
.hub-quick p{color:var(--hero-ink-2)}
.hub-quick .btn-ghost{background:var(--sheet);color:var(--ink);min-width:4rem}
.hub-grid{gap:1rem}
.hub-block{background:var(--sheet);border-radius:24px;padding:1.3rem 1.4rem;box-shadow:var(--shadow)}
.hb-ic{width:3.2rem;height:3.2rem;border-radius:16px;display:grid;place-items:center;font-size:1.6rem;background:var(--tint);margin-bottom:.8rem}
.hub-block h2 a:hover{text-decoration:none;color:var(--quill)}
.hub-block .plain-links li{border-bottom-color:var(--rule-2);display:flex;justify-content:space-between;align-items:center;gap:.5rem}
.plain-links a{color:var(--ink)}
.plain-links a:hover{color:var(--quill)}
.more{text-decoration:none}
.more::after{content:" →"}
.how{max-width:none}
.how-list{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,15rem),1fr));gap:1rem;counter-reset:how}
.how-list li{margin:0;background:var(--sheet);border-radius:22px;padding:1.1rem 1.2rem 1.15rem;box-shadow:var(--shadow);counter-increment:how;color:var(--ink-2)}
.how-list li::before{content:counter(how);display:grid;place-items:center;width:2.2rem;height:2.2rem;border-radius:50%;background:var(--butter);color:var(--ink);font-weight:800;margin-bottom:.6rem}
.how-list strong{display:block;color:var(--ink);font-weight:800}
.drafts-sec,.progress-sec,.findlevel,.path{background:var(--sheet);border-radius:var(--radius-l);padding:1.4rem 1.5rem;box-shadow:var(--shadow);margin-bottom:1rem}
.draft-list{border-top:0}
.draft-list li{background:var(--paper);border:0;border-radius:16px;margin-bottom:.5rem;padding:.8rem 1rem}
.pl-bar{height:.7rem;border-radius:999px}
.pl-bar span{border-radius:999px}
.progress-ladder li[data-level="A1"] .pl-bar span{background:var(--l-a1)} .progress-ladder li[data-level="A2"] .pl-bar span{background:var(--l-a2)}
.progress-ladder li[data-level="B1"] .pl-bar span{background:var(--l-b1)} .progress-ladder li[data-level="B2"] .pl-bar span{background:var(--l-b2)}
.progress-ladder li[data-level="C1"] .pl-bar span{background:var(--l-c1)} .progress-ladder li[data-level="C2"] .pl-bar span{background:var(--l-c2)}
.can-do .check{background:var(--paper);border-radius:14px;padding:.65rem .85rem}
.can-do .check:has(input:checked){background:var(--ok-soft)}
.path-grid{gap:1rem}
.path-col{background:var(--paper);border-radius:20px;padding:1rem 1.1rem}
.path-col:has(.lvl-a1){background:var(--mint)} .path-col:has(.lvl-a2){background:var(--sky)} .path-col:has(.lvl-b1){background:var(--butter)}
.path-col:has(.lvl-b2){background:var(--peach)} .path-col:has(.lvl-c1){background:var(--lav)} .path-col:has(.lvl-c2){background:var(--rose)}
.path-col .lvl{background:var(--sheet)}
.path-col a{color:var(--ink)}

/* settings, forms, search */
.settings section{border-top:0;background:var(--sheet);border-radius:24px;padding:1.3rem 1.4rem .5rem;box-shadow:var(--shadow);margin-bottom:1rem}
.seg-opts{border:0;border-radius:14px;background:var(--paper);padding:.25rem;gap:.2rem}
.seg-opts span{border:0;border-radius:11px}
.seg-opts input:checked+span{background:var(--ink);color:var(--paper)}
.preview-text{border:2px dashed var(--rule);border-radius:16px}
.form{background:var(--sheet);border-radius:24px;padding:1.4rem;box-shadow:var(--shadow)}
.notice{border-radius:16px;font-weight:700}
.search-results{display:grid;gap:.6rem}
.search-results li{background:var(--sheet);border:0;border-radius:18px;padding:.9rem 1.1rem;box-shadow:var(--shadow)}
.search-results a{color:var(--ink)}
.sr-kind{border:0;background:var(--paper);border-radius:999px;padding:.1rem .55rem}
.nf-code{color:var(--lav);font-weight:800;font-size:6rem}

/* footer and tab bar */
.foot{background:var(--sheet);border-top:0;border-radius:var(--radius-l) var(--radius-l) 0 0;margin-top:3rem}
.foot-in{max-width:80rem;padding:2.25rem clamp(1rem,3.5vw,2.5rem) 1rem}
.foot-cols h2{font-weight:800;font-size:.85rem;text-transform:uppercase;letter-spacing:.06em}
.foot-cols a{color:var(--ink-2)}
.foot-cols a:hover{color:var(--ink);text-decoration:none}
.foot-small{max-width:80rem;padding-inline:clamp(1rem,3.5vw,2.5rem)}
.toast{border-radius:14px}

.tile-emoji,.tc-pic,.head-pic,.mini-ic,.hb-ic,.page-head::after{font-family:"Apple Color Emoji","Segoe UI Emoji","Noto Color Emoji","Twemoji Mozilla",sans-serif;font-weight:400}
.task-head{display:flex;flex-wrap:wrap;align-items:center;column-gap:.5rem}
.task-head>*{flex:1 1 100%}
.task-head>.facts,.task-head>.task-actions{flex:0 1 auto;margin:0}
.task-head>.lead{margin-bottom:1rem;max-width:none;padding-right:18%}
.level-pick a:nth-child(1){background:#D9F2E6}.level-pick a:nth-child(2){background:#DBEBFB}.level-pick a:nth-child(3){background:#FFF1C2}
.level-pick a:nth-child(4){background:#FDE3D3}.level-pick a:nth-child(5){background:#E7E1FA}.level-pick a:nth-child(6){background:#FADDE6}
.level-pick a.btn-ghost{color:#1E2440}
.stu-top{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:1rem;margin-bottom:1rem}
.stu-top>section{margin:0}
.progress-ladder{max-width:none}
.can-do{grid-template-columns:repeat(auto-fit,minmax(min(100%,20rem),1fr));max-width:none}
@media (max-width:860px){.stu-top{grid-template-columns:minmax(0,1fr)}}
/* role switch in the header + teacher-only controls */
html:not([data-role="teacher"]) .teacher-only{display:none!important}
.role-sw{display:inline-flex;background:var(--sheet);border-radius:999px;padding:.25rem;box-shadow:var(--shadow);gap:.15rem}
.role-sw button{font:inherit;font-weight:800;font-size:.88rem;border:0;background:transparent;color:var(--ink-2);border-radius:999px;padding:.4rem .8rem;cursor:pointer;display:inline-flex;align-items:center;gap:.35rem;min-height:2.25rem}
.role-sw button:hover{color:var(--ink);background:var(--rule-2)}
.role-sw button[aria-pressed="true"]{background:var(--mint);color:var(--ink)}
.role-sw button[data-set-role="teacher"][aria-pressed="true"]{background:var(--lav)}
.role-sw span[aria-hidden]{font-family:"Apple Color Emoji","Segoe UI Emoji","Noto Color Emoji",sans-serif;font-size:1.05rem}
@media (max-width:640px){.role-sw .rs-l{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.role-sw button{padding:.35rem .55rem}}
/* home v1.3: hero + two doors + today; compact footer */
.tile-today{grid-column:span 2;flex-direction:row;align-items:center;justify-content:flex-start;gap:1.25rem;padding-right:4.5rem}
.tile-today .tile-emoji{font-size:3.4rem}
.tile-today .tile-arrow{top:50%;transform:translateY(-50%)}
.tile-today:hover .tile-arrow{transform:translate(3px,-50%)}
.home-wrap .levels-sec .sec-head{margin-top:1.5rem}
.foot{margin-top:2.5rem}
.foot-in{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem 2rem;padding-top:1.5rem;padding-bottom:.75rem}
.foot-brand p{margin:.35rem 0 0;font-size:.9rem}
.foot-credit{font-size:inherit!important}
.foot-links{display:flex;flex-direction:column;align-items:flex-end;gap:.6rem}
.foot-links ul,.foot-small ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.3rem 1.1rem}
.foot-links a,.foot-small a{color:var(--ink-2);text-decoration:none;font-weight:700;font-size:.92rem}
.foot-links a:hover,.foot-small a:hover{color:var(--ink);text-decoration:underline}
.foot-lv{gap:.35rem!important}
.foot-lv a{display:inline-grid;place-items:center;min-width:2.6rem;height:1.9rem;border-radius:999px;background:var(--paper);font-size:.8rem!important;color:var(--ink)!important}
.foot-small{display:flex;flex-wrap:wrap;justify-content:space-between;gap:.5rem 1rem;border-top:1px solid var(--rule-2);padding-top:.8rem;padding-bottom:1.1rem}
.foot-small a{font-size:.82rem;font-weight:400}
@media (max-width:860px){.foot-links{align-items:flex-start}}
@media (max-width:640px){
  .tile-today{grid-column:1/-1;padding-right:3.5rem;gap:.9rem}
  .tile-today .tile-emoji{font-size:2.4rem}
  .foot-in{padding-top:1.2rem}
}
/* logo */
.brand{gap:.55rem;align-items:center}
.logo-mark{display:block;flex:none}
.logo-word{display:block;height:1.55rem;width:auto;aspect-ratio:535/111;color:var(--ink)}
.foot .logo-word{height:1.35rem}
.tile-hero .logo-word{color:var(--hero-ink)}
.tile-hero .hero-art{width:auto;height:58%;right:1.25rem;bottom:auto;top:7%;transform:rotate(10deg)}
.tile-hero .hero-copy{max-width:66%}
.tile-hero h1{font-size:clamp(2rem,1.3rem + 1.9vw,2.85rem)}
.bento{grid-auto-rows:minmax(10.5rem,auto)}
.tile-hero{min-height:23rem}
@media (max-width:640px){
  .tile-hero .hero-art{height:9rem;top:1rem;right:.4rem}
  .logo-word{height:1.3rem}
  .brand .logo-mark{width:28px;height:40px}
}
@media (max-width:380px){.brand .logo-word{display:none}}
/* exams v1.3 */
ul.exam-doors{list-style:none;margin:0 0 1.5rem;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,18rem),1fr));gap:1rem}
ul.exam-doors li{display:flex}
.exam-door{width:100%;padding-right:4rem}
.exam-parts{display:flex;flex-wrap:wrap;gap:.35rem;margin:.2rem 0 .4rem}
.exam-parts span{background:var(--sheet);border-radius:999px;padding:.15rem .65rem;font-size:.82rem;font-weight:700;color:var(--ink)}
.exam-n{font-size:.88rem}
.part-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,15rem),1fr));gap:1rem;margin:0 0 1.5rem}
.part-card{position:relative;display:flex;flex-direction:column;gap:.45rem;padding:1.15rem 1.2rem;border-radius:24px;background:var(--tint);color:var(--ink);text-decoration:none;transition:transform .15s,box-shadow .15s}
.part-card:hover{color:var(--ink);transform:translateY(-3px);box-shadow:var(--shadow-up)}
.pc-emoji{font-size:2rem;line-height:1;font-family:"Apple Color Emoji","Segoe UI Emoji","Noto Color Emoji",sans-serif}
.pc-name{font-weight:800;font-size:1.15rem;line-height:1.25}
.pc-facts{display:flex;flex-wrap:wrap;gap:.3rem}
.pc-facts span{background:var(--sheet);border-radius:999px;padding:.12rem .6rem;font-size:.8rem;font-weight:800}
.pc-note{font-size:.9rem;color:var(--ink-2)}
.pc-n{margin-top:auto;font-weight:800;font-size:.88rem}
.part-group{scroll-margin-top:5.5rem}
.part-group h2{display:flex;flex-wrap:wrap;align-items:baseline;gap:.2rem .6rem}
.part-group h2 small{font-size:.85rem;font-weight:700;color:var(--ink-2)}
.pg-emoji{font-family:"Apple Color Emoji","Segoe UI Emoji","Noto Color Emoji",sans-serif}
.tc-kicker{display:block;font-size:.74rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-2);margin-bottom:.15rem}
.exam-more{margin-top:2rem;max-width:48rem}
.exam-more .faq{margin-top:0}
.exam-more .faq h2{font-size:1.15rem}
.exam-more .exam-intro{margin-top:0}
/* task toolkit buttons with pictures */
.tool-btn span[aria-hidden]{font-family:"Apple Color Emoji","Segoe UI Emoji","Noto Color Emoji",sans-serif;margin-right:.15rem}
.tool-panel.extension{background:var(--lav)}
/* reading pages: tighter examples */
.prose blockquote{font-style:normal;color:var(--ink);background:var(--ok-soft);border-left:0;border-radius:14px;padding:.55rem 1rem;margin:.6em 0 1.1em}
.prose blockquote p{margin:.2em 0}
.prose p+blockquote{margin-top:-.2em}
.related .plain-links{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,18rem),1fr));gap:.6rem}
.related .plain-links li{border:0;padding:0}
.related .plain-links a{display:block;height:100%;background:var(--sheet);border-radius:16px;padding:.75rem 1rem;box-shadow:var(--shadow)}
.related .plain-links a:hover{box-shadow:var(--shadow-up);text-decoration:none}
@media (max-width:1080px){
  .bento{grid-template-columns:1fr 1fr}
  .tile-hero{grid-column:1/-1;grid-row:auto;min-height:20rem}
  .level-tiles{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:960px){
  .tabbar{background:var(--sheet);border-top:0;border-radius:22px 22px 0 0;box-shadow:0 -4px 20px rgba(30,36,64,.08);padding-inline:.5rem}
  .tabbar a{border-radius:14px;margin:.1rem}
  .tabbar a[aria-current="page"]{color:var(--ink);background:var(--quill-soft)}
  .mini-row{grid-template-columns:minmax(0,1fr)}
  .foot{border-radius:var(--radius-l) var(--radius-l) 0 0}
}
@media (max-width:640px){
  .bento{grid-template-columns:1fr 1fr;grid-auto-rows:auto;gap:.75rem}
  .tile{padding:1.1rem;border-radius:24px}
  .tile-hero{padding:1.5rem 1.3rem;min-height:0;gap:1.2rem}
  .tile-hero h1{font-size:2rem;max-width:15rem}
  .tile-hero p{max-width:13.5rem;font-size:1rem}
  .hero-art{width:34%;right:-1.8rem;bottom:auto;top:.6rem}
  .tile-hero h1{max-width:13.5rem}
  .tile-role{min-height:10.5rem;gap:.7rem}
  .tile-emoji{font-size:2.3rem}
  .tile-title{font-size:1.08rem}
  .tile-title-s{font-size:.98rem}
  .tile-text{font-size:.86rem}
  .tile-arrow{width:2.1rem;height:2.1rem;top:.85rem;right:.85rem}
  .tile-arrow .ic{width:16px;height:16px}
  .tile-meta{flex-wrap:wrap}
  .level-tiles{grid-template-columns:repeat(3,minmax(0,1fr));gap:.6rem}
  .level-tile{min-height:0;padding:.9rem .8rem;gap:.6rem;border-radius:20px}
  .level-tile .tile-emoji{font-size:1.5rem}
  .level-tile b{font-size:1.7rem}
  .lt-name{font-size:.86rem;line-height:1.25}
  .level-tile small{font-size:.78rem}
  .sec-head{margin:1.5rem 0 .75rem}
  .sec-head h2{font-size:1.2rem}
  .mini-row{gap:.6rem;margin-top:.75rem}
  .page-head,.task-head{padding:1.25rem 4.8rem 1.25rem 1.25rem;border-radius:24px;min-height:0}
  .page-head::after,.head-pic{font-size:2.6rem;right:1rem}
  .head-pic{top:1.1rem}
  .page-article .page-head{padding-right:1.25rem}
  .task-list{gap:.75rem}
  .hub-quick,.drafts-sec,.progress-sec,.findlevel,.path,.settings section{padding:1.15rem;border-radius:22px}
  .exam-door{padding:1.2rem}
}
@media (max-width:640px){
  .filters{padding:.9rem;gap:.7rem}
  .filters .chip-row{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;margin:0 -.9rem;padding:0 .9rem .1rem}
  .filters .chip{flex:none;min-height:2.3rem;padding:.3rem .85rem}
  .filter-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:.5rem}
  .filter-grid label>span{font-size:.78rem;margin-bottom:.1rem}
  .filter-grid .grow>span{display:none}
  .filter-grid label:has(select[name=sort]){display:none}
  .filter-grid .grow{grid-column:1/-1}
  .filter-grid .check{grid-column:1/-1;font-size:.9rem}
  .filter-grid .btn{grid-column:1/-1}
  .filter-grid select,.filter-grid input{min-height:2.6rem;padding:.45rem .7rem}
  .page-head .lead{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
}
@media (max-width:380px){
  .tile-hero h1{font-size:1.75rem}
  .hero-art{display:none}
  .tile-hero p{max-width:none}
  .level-tiles{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media print{
  .prose blockquote{background:none;border-left:2pt solid #999;border-radius:0}
  :root,[data-theme="dark"]{--mint:#fff;--sky:#fff;--lav:#fff;--peach:#fff;--butter:#fff;--rose:#fff;--hero:#fff;--hero-ink:#000;--hero-ink-2:#333;--shadow:none;--shadow-up:none}
  .page-head,.task-head{padding:0;min-height:0;border-radius:0}
  .page-head::after,.head-pic,.tc-pic,.tile-arrow{display:none}
  .prompt::before{display:none}
  .prompt,.reading-text,.sheet,.context,.callout{box-shadow:none;border:1px solid #bbb}
}

@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
[data-motion="reduce"] *{animation:none!important;transition:none!important}
@media (forced-colors:active){.lvl,.chip.on,.tool-btn[aria-expanded="true"]{border:2px solid CanvasText}mark,.ann{background:Mark}}

/* ---------- print ---------- */
@media print{
  @page{size:A4;margin:14mm 14mm 16mm}
  :root,[data-theme="dark"]{--paper:#fff;--sheet:#fff;--ink:#000;--ink-2:#333;--ink-3:#555;--rule:#bbb;--rule-2:#ddd;--quill:#000;--hl:#eee;--margin:#c66;color-scheme:light}
  html{font-size:11pt}
  body{background:#fff;color:#000;padding:0;display:block}
  .top,.foot,.tabbar,.announce,.skip,.crumbs,.no-print,.ad,.toast,.related,.toc,.dlg,.classroom,.sheet-col,.tool-btns,.toolkit-hint,.model-warn,.task-actions,
  .selfcheck,.reading-text .reading-wc,[data-toggle-answers],.level-nav,.searchbox,.chart-table summary{display:none!important}
  .print-only{display:block}
  .wrap{max-width:none;padding:0}
  .page-pad{padding:0}
  a{color:#000;text-decoration:none}
  h1{font-size:18pt;margin-bottom:4pt}
  .lead{font-size:11pt;color:#333;margin-bottom:6pt}
  .task-grid{display:block}
  .task-head{margin-bottom:8pt}
  .facts{margin:4pt 0}
  .print-head{border-bottom:1pt solid #000;padding-bottom:5pt;margin-bottom:10pt}
  .ph-brand{font-size:8.5pt;color:#555;margin:0 0 6pt}
  .ph-fields{display:flex;gap:10pt;margin:0}
  .ph-fields span{flex:1;border-bottom:1pt solid #000;padding-bottom:2pt;font-size:9.5pt}
  .ph-fields span:first-child{flex:2}
  .block,.tool-panel,.prompt,.context,.extension{break-inside:avoid;page-break-inside:avoid}
  .context,.prompt,.reading-text,.tool-panel,.extension{background:#fff;border:1pt solid #999;border-radius:6pt;padding:8pt 10pt;max-height:none;overflow:visible}
  .prompt{border-left:3pt solid #000}
  .reading-text{font-size:10.5pt;line-height:1.55}
  .toolkit{border:0;padding:0}
  .toolkit>.block-h{display:none}
  .tool-panel{animation:none;margin-bottom:8pt}
  .phrase-groups{columns:2;column-gap:16pt}
  .phrase-group{break-inside:avoid}
  .phrase-groups ul{display:block;padding-left:12pt;list-style:disc}
  .phrase-groups li{margin-bottom:1pt}
  .phrase{display:block;width:100%;text-align:left;border:0;padding:0;font-size:10pt;background:none;line-height:1.35}
  .p-answers .block-h{break-after:avoid}
  .p-lines .block-h{break-after:avoid}
  .p-lines .lines{break-before:avoid}
  .questions li{margin-bottom:4pt}
  .print-answer-line{display:block;border-bottom:1pt solid #999;height:16pt}
  .p-lines .lines span{display:block;height:9.5mm;border-bottom:.6pt solid #999}
  .p-lines{margin-top:8pt}
  .chart{break-inside:avoid}
  .chart .hatch-line{stroke:#fff}
  .chart-table{display:block}
  .chart-table>.table-wrap{display:none}
  .prose{max-width:none;font-size:10.5pt}
  .callout{break-inside:avoid;border:1pt solid #999}
  mark,.ann{background:none;text-decoration:underline;text-decoration-thickness:1.5pt}
  .p-answers,.p-model,.p-teacher{display:none!important}

  /* choices from the print dialog */
  html.pr-task .p-steps{display:none!important}
  html.pr-task.pr-steps .p-steps{display:block!important}
  html.pr-task .p-phrases,html.pr-task .p-vocab{display:none!important}
  html.pr-task.pr-phrases .p-phrases,html.pr-task.pr-vocab .p-vocab{display:block!important}
  html.pr-task .p-checklist{display:none!important}
  html.pr-task.pr-checklist .p-checklist{display:block!important}
  html.pr-task .p-lines{display:none!important}
  html.pr-task.pr-lines .p-lines{display:block!important}
  html.pr-task .p-extension{display:none!important}
  html.pr-task.pr-extension .p-extension{display:block!important}
  html.pr-teacher .p-model,html.pr-teacher .p-teacher{display:block!important;break-before:page}
  html.pr-teacher .p-teacher{break-before:auto}
  html.pr-teacher .p-answers{display:block!important}
  html.pr-teacher .questions .a{display:block!important}
  html.pr-teacher .print-answer-line{display:none}
  html.pr-task.pr-teacher .p-lines{display:none!important}
  .checklist-print{list-style:none;padding:0}
  .checklist-print li::before{content:"☐ ";font-size:12pt}
}