/* Fonts are self-hosted by the Forest theme; no third-party font request. */
:root{
  --bg:#f5f9ff;--panel:#fff;--ink:#172033;--muted:#68738a;--line:#dfe7f1;
  --blue:#4d8dff;--blue2:#eaf3ff;--green:#59b85a;--green2:#ebf8e9;
  --yellow:#f2bd35;--yellow2:#fff5d9;--purple:#8469e8;--red:#e76565;
  --wood:#7d4f2e;--wood-2:#a06a3e;--wood-line:#5a3a22;--cream:#fff5d8;
  --shadow:0 8px 26px rgba(48,72,110,.08);
  --shadow-sm:0 2px 8px rgba(40,60,100,.10);
  --shadow-md:0 8px 22px rgba(40,60,100,.12);
  --shadow-lg:0 18px 48px rgba(30,50,90,.16);
  --radius-sm:10px;--radius:14px;--radius-lg:18px;--block:6px;
  --r-pill:999px;
  --space-1:.35rem;--space-2:.6rem;--space-3:1rem;--space-4:1.5rem;--space-5:2.2rem;
  --font-display:"Courier New",ui-monospace,monospace;
  --font-pixel:"Press Start 2P",var(--font-display);
  --fs-hero:clamp(1.6rem,1rem + 2.2vw,2.6rem);
  --fs-h1:clamp(1.35rem,1rem + 1.4vw,2rem);
  --fs-h2:clamp(1.15rem,.95rem + .7vw,1.45rem);
  --ease:cubic-bezier(.2,.7,.2,1)
}
.brand{color:inherit;text-decoration:none}
.step{display:grid;gap:2px}.step small{font-size:9px;letter-spacing:.08em}.step.locked{opacity:.72}
.day{text-align:left;color:inherit;cursor:pointer}.day.selected{outline:2px solid var(--blue)}.calendar-event{display:block;margin-top:6px;padding:4px;border-radius:6px;background:var(--blue2);font-size:12px}.calendar-event:hover{background:#dcecff}
.discover[role="button"],.study-panel[role="button"]{cursor:pointer}.discover[role="button"]:focus,.study-panel[role="button"]:focus{outline:2px solid var(--blue);outline-offset:2px}
.usage-feedback blockquote{margin:14px 0;padding:12px 15px;border-left:4px solid var(--blue);background:#fff;border-radius:8px;font-size:17px}.usage-feedback.passed{border-color:#b8deb5}.usage-feedback.needs-work{border-color:#efd792}.feedback-checks{display:flex;flex-wrap:wrap;gap:7px;margin:12px 0}
*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:linear-gradient(#eff8ff 0,#f7fbff 200px,#f6f8fb 100%);color:var(--ink);-webkit-font-smoothing:antialiased}button,input,textarea,select{font:inherit}button{cursor:pointer}
/* ===== motion: calm entrance + gentle hover, respects reduced-motion ===== */
@keyframes fade-up{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@keyframes soft-pop{from{transform:scale(.98);opacity:.6}to{transform:none;opacity:1}}
.card,.nova-course,.discover,.treasure,.task,.exam,.quest-card,.mini-stat,.goal-card,.calendar-card,.issue,.coach-card,.nova-timetable,.edutest-feature{animation:fade-up .5s var(--ease) both}
.btn,.chip-btn,.nav a,.tab,.nova-tab,.score,.habit{cursor:pointer;transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease)}
.btn:hover,.chip-btn:hover,.tab:hover,.nova-tab:hover{transform:translateY(-1px);box-shadow:var(--shadow-sm)}
.btn:active{transform:translateY(0)}
.card:hover,.nova-course:hover,.discover:hover,.treasure:hover,.exam:hover{box-shadow:var(--shadow-md)}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .card,.nova-course,.discover,.treasure,.task,.exam,.quest-card,.mini-stat,.goal-card,.calendar-card,.issue,.coach-card,.nova-timetable,.edutest-feature{opacity:1!important;transform:none!important}
}.shell{min-height:100vh;display:grid;grid-template-columns:190px 1fr}.sidebar{background:linear-gradient(180deg,#9c6a3f,#7d4f2e);border-right:3px solid #5a3a22;padding:16px 12px;position:sticky;top:0;height:100vh;display:flex;flex-direction:column;z-index:5;box-shadow:4px 0 0 rgba(0,0,0,.12)}.brand{font-weight:900;letter-spacing:.5px;font-size:18px;display:flex;gap:9px;align-items:center;color:#fff5d8;text-shadow:1px 1px 0 #3a2306;font-family:"Courier New",monospace}.avatar{margin:18px auto 6px;width:72px;height:72px;border-radius:14px;background:repeating-linear-gradient(90deg,#caa06b 0 10px,#b88a52 10px 12px);display:grid;place-items:center;font-size:38px;border:2px solid #5a3a22;box-shadow:inset 0 3px 0 rgba(255,255,255,.25)}.profile{text-align:center;color:#fff5d8}.profile strong{display:block;color:#fff5d8;text-shadow:1px 1px 0 #3a2306}.profile small{color:#e9d3b0}.xpbar{height:8px;background:rgba(0,0,0,.35);border-radius:99px;margin:10px 8px;border:1px solid #3a2306}.xpbar i{display:block;width:0;height:100%;background:linear-gradient(90deg,#7ed24a,#ffd23f);border-radius:99px}.nav{margin-top:18px;display:grid;gap:6px}.nav a{display:flex;gap:10px;align-items:center;padding:9px 11px;border-radius:8px;color:#f4e3c4;text-decoration:none;font-weight:700;font-size:14px;border:2px solid transparent;background:linear-gradient(#a06a3e,#7d4f2e);box-shadow:inset 0 2px 0 rgba(255,255,255,.12),0 2px 0 #5a3a22;transition:.12s}.nav a:hover{transform:translateY(-1px);background:linear-gradient(#b07a4e,#8a5a34)}.nav a.active{background:linear-gradient(#ffd24a,#e0a020);color:#3a2306;border-color:#ffec99;text-shadow:none;box-shadow:inset 0 2px 0 rgba(255,255,255,.4),0 2px 0 #9a6a1a}.streak{margin-top:auto;background:rgba(0,0,0,.25);border:2px solid #5a3a22;padding:12px;border-radius:12px;text-align:center;color:#fff5d8}.main{padding:24px 28px 48px;max-width:1500px;width:100%;margin:auto}
/* Minecraft overworld photo hero (home) */
.hero{position:relative;overflow:hidden;border-radius:18px;background:linear-gradient(135deg,#4a9d3f,#2f7d34) center/cover no-repeat;background-image:linear-gradient(180deg,rgba(0,0,0,0) 0%,rgba(0,0,0,0) 45%,rgba(0,0,0,.35) 100%),url(/assets/home-banner.png?v=4);background-size:cover;background-position:center 40%;padding:18px 26px 14px;min-height:260px;color:#fff5d8}
/* Home page top-level stacked sections: give clear vertical breathing room so
   the first tabs (hero / coach panels / goal ladder) don't touch. */
.hero{margin-bottom:26px}
#homeCoachPanels{margin-bottom:30px;display:flex;flex-direction:column;gap:18px}
.goal-ladder{margin-top:0;margin-bottom:28px}
.grid-main{margin-top:0}
.hero .hero-top{height:14px;margin:-18px -26px 12px;background:repeating-linear-gradient(90deg,#7ed24a 0 14px,#67c33a 14px 16px,#85d957 16px 26px,#67c33a 26px 28px),linear-gradient(#7ed24a 0 50%,#5fb03a 50%);box-shadow:inset 0 -3px 0 rgba(0,0,0,.18)}
.hero h1{display:inline-block;padding:8px 16px;border-radius:12px;background:rgba(0,0,0,.34);color:#fff;text-shadow:1px 1px 0 rgba(0,0,0,.5);font-family:"Courier New",monospace;font-weight:900;letter-spacing:1px;font-size:clamp(1.4rem,.9rem + 2vw,2.1rem);margin:0 0 12px 8px;vertical-align:middle}
.hero .sub{display:inline-block;max-width:min(620px,92%);padding:9px 14px;border-radius:12px;background:rgba(0,0,0,.34);color:#fff;text-shadow:1px 1px 0 rgba(0,0,0,.5);line-height:1.5;font-size:.95rem;margin:0 18px 0 14px;vertical-align:middle}
.hero .sub small{display:block;margin-top:7px;padding-top:7px;border-top:1px solid rgba(255,255,255,.22);opacity:.92;font-size:.82em}
/* keep white inner cards readable on the wood hero */
.hero .mini-stat,.hero .goal-card,.hero .calendar-card{color:#1f2a3d}
.hero .mini-stat small,.hero .goal-card small,.hero .calendar-card small{color:#52627a}
.hero .mini-stat .big,.hero .goal-card strong,.hero .calendar-card b{color:#1f2a3d}
.hero .mini-stat,.hero .goal-card,.hero .calendar-card{box-shadow:0 14px 34px rgba(20,30,50,.18)}
.cloud{position:absolute;width:70px;height:20px;background:white;opacity:.9;box-shadow:18px -10px white,38px 2px white;display:none}.hero .c1{right:340px;top:28px}.hero .c2{right:130px;top:40px;transform:scale(.75)}h1,h2,h3,p{margin-top:0}.sub{color:#52627a}.hero-grid{display:grid;grid-template-columns:1.1fr .95fr;gap:14px;position:relative;z-index:1;margin-top:18px}
.hero-left{display:flex;flex-direction:column;gap:0;min-width:0}.mini-stat,.goal-card,.calendar-card,.card{background:#fff;border:1px solid #e7ecf3;border-radius:var(--radius-lg);box-shadow:var(--shadow-md);overflow:hidden;position:relative}
.card>.card-title,.card>.section{padding-left:18px;padding-right:18px}
.card>.card-title{padding-top:14px;padding-bottom:0}/* 首页 hero 内所有小卡统一为半透明毛玻璃，透明度一致 */
.hero .mini-stat,.hero .goal-card,.hero .calendar-card{background:rgba(255,255,255,.82);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.mini-stat{position:relative;overflow:hidden;padding:15px;background:rgba(255,255,255,.82);backdrop-filter:blur(4px)}.mini-stat .big{font-size:24px;font-weight:900}
/* stat tiles (kept at this height) + good-habits card below */
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.hero-stats .mini-stat{padding:9px 10px}
.hero-stats .mini-stat .big{font-size:18px}
.hero-stats .mini-stat small{font-size:.62rem;letter-spacing:.02em}
.good-habits{margin-top:10px;background:rgba(255,255,255,.82);backdrop-filter:blur(4px);border:1px solid var(--line);border-radius:var(--radius-lg);padding:12px 14px;box-shadow:var(--shadow-md)}
.good-habits .gh-head{font-family:var(--font-display);font-weight:800;font-size:13.5px;color:var(--ink,#1f2d3d);margin-bottom:8px;letter-spacing:.01em}
.good-habits .gh-list{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:6px}
.good-habits .gh-list li{display:flex;gap:10px;align-items:flex-start;padding:6px 4px;border-radius:8px}
.good-habits .gh-list li:hover{background:rgba(0,0,0,.025)}
.good-habits .gh-icon{font-size:16px;line-height:1.35;flex:0 0 auto}
.good-habits .gh-text{font-size:12.5px;line-height:1.5;color:#334155}
.good-habits .gh-text b{color:var(--ink,#1f2d3d);font-weight:700}
/* fresh-learner guidance card (no test/plan data yet) */
.fresh-guide{margin-top:6px;padding:18px 18px;background:linear-gradient(180deg,#eef7ff,#e6f0ff);border:1px dashed #9cc4ff;border-radius:14px}
.fresh-guide h3{margin:0 0 6px;font-size:16px;color:#1f3a66}
.fresh-guide p{margin:0 0 12px;color:#3c5a82;font-size:13.5px;line-height:1.55}
.fresh-guide .fresh-actions{display:flex;gap:10px;flex-wrap:wrap}
/* NEXT BIG GOAL 加像素小图标，避免太空 */
.goal-card::after{content:"";position:absolute;right:-4px;bottom:-4px;width:44px;height:44px;opacity:.18;background:linear-gradient(135deg,#ffb13a,#e07a00);border-radius:6px;transform:rotate(8deg);box-shadow:inset -4px -4px rgba(0,0,0,.2),inset 4px 4px rgba(255,255,255,.3)}
/* 小卡数字/标题下方的副标题，让信息更饱满 */
.mini-stat .stat-sub,.goal-card .stat-sub{display:block;margin-top:3px;font-size:.7rem;color:#52627a;font-weight:600;letter-spacing:.2px}
/* faint Minecraft glyph in each stats card corner so it’s not empty */
.mini-stat::after{content:"";position:absolute;right:-6px;bottom:-6px;width:46px;height:46px;opacity:.16;background-size:contain;background-repeat:no-repeat}
.mini-stat:nth-child(1)::after{background-image:linear-gradient(135deg,#3aa56a,#1f7a45);border-radius:8px;box-shadow:inset -5px -5px rgba(0,0,0,.2),inset 5px 5px rgba(255,255,255,.3)}
.mini-stat:nth-child(2)::after{background-image:linear-gradient(135deg,#7ec0ff,#3a7ad1);border-radius:50% 50% 50% 0;transform:rotate(45deg)}
.mini-stat:nth-child(3)::after{background-image:radial-gradient(circle at 50% 60%,#ff8a1a,#d35a00);border-radius:50% 50% 45% 45%}.goal-card{padding:15px}.goal-card strong{font-size:18px}
.goal-line{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:6px}
.goal-line strong{flex:1;min-width:0;line-height:1.25;color:#1f2a3d}
.goal-line .countdown{margin-top:0}

/* ---- Life article: bilingual body + AI / Ask Mum ---- */
.life-actions{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}
.life-bi{margin-top:14px;padding:14px 16px;border-radius:13px;background:#f7f9fc;border:1px solid var(--line,#e6ebf1)}
.life-bi.zh{background:#fffbf0;border-color:#f0e4c8}
.life-bi h3{margin:0 0 8px;font-size:.8rem;letter-spacing:.6px;text-transform:uppercase;color:#52627a}
.life-body p{margin:0 0 10px;line-height:1.8;font-size:15.5px;color:#21304a}
.life-body p:last-child{margin:0}
.life-ask{display:grid;gap:8px;margin-top:6px}
.life-ask-reply{margin-top:10px;padding:12px 14px;border-radius:12px;background:#eef6ff;border:1px solid #cfe3fb;line-height:1.75;font-size:15px}
.life-mum-note{margin-top:10px;padding:10px 14px;border-radius:12px;background:#f0faf0;border:1px solid #cdeccd;font-size:14px}
.life-mum-list{margin-top:12px;display:grid;gap:8px}
.q4m{padding:9px 12px;border-radius:11px;background:#fff;border:1px solid var(--line,#e6ebf1);font-size:14.5px}
/* Ask-Mum dialog + multi-turn AI conversation on Life articles */
.modal-backdrop{position:fixed;inset:0;background:rgba(15,26,45,.45);display:grid;place-items:center;z-index:120;padding:16px}
.modal-card{background:#fff;border-radius:16px;padding:18px;width:min(560px,100%);box-shadow:0 18px 44px rgba(15,30,60,.28);display:grid;gap:11px}
.modal-card h3{margin:0;font-size:17px}
.modal-card .mum-ctx{font-size:13px;color:var(--muted,#8a97ab);background:#f7f9fc;border:1px solid var(--line,#e6ebf1);border-radius:10px;padding:8px 10px;line-height:1.6}
.modal-card textarea{min-height:110px;font-size:15px;line-height:1.6}
.modal-card .choice{margin-top:0}
.life-chat{display:grid;gap:9px;margin-top:11px}
.life-chat .turn{border-radius:12px;padding:10px 13px;font-size:15px;line-height:1.72;white-space:pre-wrap}
.life-chat .q{background:#eef6ff;border:1px solid #cfe3fb}
.life-chat .a{background:#f7f9fc;border:1px solid var(--line,#e6ebf1)}
.life-chat .pending{background:#fff8e6;border:1px solid #f2dfa8;color:#7a5a12}
.life-chat .err{background:#fff1f1;border:1px solid #f3c9c9;color:#8a3030}
.q4m-a{margin-top:6px;padding:8px 11px;border-radius:10px;background:#f6f8fb;color:#3a4a66;font-size:14px;line-height:1.6}
.q4m-a.muted{color:#8a97ab;font-style:italic}
.q4m-parent{display:grid;gap:6px;padding:11px 13px;border:1px solid var(--line,#e6ebf1);border-radius:13px;background:#fff;margin-top:10px}
.q4m-meta{display:flex;align-items:baseline;justify-content:space-between;gap:10px}
.q4m-meta small{color:var(--muted,#52627a)}

/* ---- Diary + Message + voice input ---- */
.voice-row{display:flex;gap:8px;align-items:flex-start}
.voice-row .input{flex:1;min-width:0}
.voice-row .dictBtn{flex:none;padding:8px 12px;font-size:16px;line-height:1}
/* Mic button sitting next to a primary action (Message page) — same sizing,
   otherwise it inherits the plain .btn metrics and looks mismatched. */
.choice .dictBtn{flex:none;padding:9px 14px;font-size:16px;line-height:1}
.dictBtn.rec{background:#ffe3e3;border-color:#ff9d9d;animation:pulseMic 1.1s ease-in-out infinite}
@keyframes pulseMic{0%,100%{box-shadow:0 0 0 0 rgba(255,80,80,.35)}50%{box-shadow:0 0 0 6px rgba(255,80,80,0)}}
.cal-head{display:grid;grid-template-columns:repeat(7,1fr);text-align:center;font-size:11px;font-weight:700;color:#8a97ab;margin-bottom:4px}
.cal-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:3px}
.cal-grid .dc{display:grid;place-items:center;aspect-ratio:1;border-radius:8px;font-size:12.5px;color:#3a4a66;text-decoration:none;border:1px solid transparent;transition:.12s}
.cal-grid .dc:hover{background:#eef3fb}
.cal-grid .dc.has{background:#eaf7e6;border-color:#cdebc4;color:#2f7d37;font-weight:700}
.cal-grid .dc.has::after{content:'';position:absolute;right:5px;bottom:5px;width:6px;height:6px;border-radius:50%;background:#3fb950}
.cal-grid .dc.has{position:relative}
.cal-grid .dc.sel{background:var(--blue,#2f80ed);color:#fff;border-color:transparent}
.cal-grid .dc.sel::after{background:rgba(255,255,255,.9)}
.cal-grid .dc.off{color:#b8c0c8;background:transparent;cursor:default;pointer-events:none}
.cal-grid .dc.empty{visibility:hidden}
.diary-day{display:grid;grid-template-columns:auto 1fr auto;gap:8px;align-items:baseline;padding:7px 9px;border:1px solid var(--line,#e6ebf1);border-radius:10px;text-decoration:none;color:inherit;margin-bottom:6px}
.diary-day:hover{background:#f7f9fc}
.diary-day span{color:var(--muted,#52627a);font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.diary-day em{font-style:normal;font-size:12px;color:#7a879b}
.diary-photos{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.diary-photos img{width:96px;height:96px;object-fit:cover;border-radius:10px;border:1px solid var(--line,#e6ebf1);background:#f4f7fb}
.photo-wrap{position:relative;display:inline-block;line-height:0}
.photo-del{position:absolute;top:3px;right:3px;width:22px;height:22px;padding:0;border:none;border-radius:50%;background:rgba(15,20,30,.62);color:#fff;font-size:15px;line-height:22px;cursor:pointer;z-index:2}
.photo-del:hover{background:rgba(200,30,30,.9)}
.diary-entry{border:1px solid var(--line,#e6ebf1);border-radius:14px;padding:12px;margin:10px 0}
.diary-entry.editing{background:#fbfdff}
.diary-entry h3{margin:0 0 6px}
.diary-body{white-space:pre-wrap;line-height:1.5}
.entry-controls{margin-top:8px}
.msg-thread{display:grid;gap:10px;max-height:52vh;overflow:auto}
.msg{padding:9px 12px;border-radius:13px;max-width:78%}
.msg.me{background:#e8f1ff;margin-left:auto}
.msg.mum{background:#f4f6fa;margin-right:auto}
.msg p{margin:4px 0 0;line-height:1.6}
.msg audio{width:100%;margin-top:4px}
.msg-meta{font-size:11.5px;color:#7a879b;font-weight:700;letter-spacing:.2px}.countdown{display:inline-flex;gap:8px;align-items:center;background:var(--yellow2);color:#725500;padding:7px 10px;border-radius:10px;font-weight:800;margin-top:8px}
/* Unconfirmed exam dates: a planning aid, not a published date. Deliberately
   muted so it never reads as an authoritative countdown. */
.countdown.tbc{background:#eef1f6;color:#5a6a85;font-weight:600;flex-direction:column;align-items:flex-start;gap:4px;line-height:1.4}
.countdown.tbc small{font-weight:400;font-size:.75rem;opacity:.85}
.countdown.tbc .btn{margin-top:4px;padding:3px 10px;font-size:.75rem}.calendar-card{padding:13px}.calendar-mini{display:grid;grid-template-columns:repeat(7,1fr);font-size:11px;text-align:center;gap:5px}.calendar-mini b{color:#65728a}.calendar-mini span{padding:4px;border-radius:7px}.calendar-mini .today{background:var(--blue);color:#fff}.grid-main{display:grid;grid-template-columns:1.35fr .75fr;gap:18px;margin-top:18px}.card-stack{display:flex;flex-direction:column;gap:18px;min-width:0}.top-panel{background:#fff;border:1px solid #e3e7ee;border-radius:16px;padding:14px 16px;margin-top:14px;box-shadow:0 6px 20px rgba(20,24,33,.06)}.top-panel.hidden{display:none}.modal{position:fixed;inset:0;background:rgba(20,24,33,.45);display:flex;align-items:center;justify-content:center;z-index:200;padding:18px}.modal.hidden{display:none}.modal-card{background:#fff;border-radius:18px;padding:16px;max-width:320px;width:100%;box-shadow:0 18px 50px rgba(0,0,0,.25)}.flash{animation:flash 1.3s ease}@keyframes flash{0%{background:rgba(99,102,241,.22)}100%{background:transparent}}.card{padding:18px}.card-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:13px}.card-title h2,.card-title h3{margin:0}.learning-list{display:grid;gap:10px}.task{display:grid;grid-template-columns:38px 1fr auto;gap:11px;align-items:center;padding:11px;border:1px solid var(--line);border-radius:13px;background:#fff}.task.primary{background:linear-gradient(90deg,#f1faec,#fff)}.icon{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;background:var(--blue2);font-size:19px}.task small{color:var(--muted)}.btn{border:0;border-radius:var(--radius-sm);padding:9px 14px;font-weight:800;background:var(--blue);color:#fff;box-shadow:var(--shadow-sm);transition:transform .18s var(--ease),box-shadow .18s var(--ease),filter .18s var(--ease)}.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-md);filter:saturate(1.08)}.btn.green{background:var(--green)}.btn.yellow{background:var(--yellow);color:#563f00}.btn.ghost{background:#fff;color:#3d536e;border:1px solid var(--line)}.btn.danger{background:#fff0f0;color:#b84040;border:1px solid #f0caca}.progress{height:8px;background:#e9edf3;border-radius:99px;overflow:hidden}.progress i{display:block;height:100%;background:linear-gradient(90deg,#58b95b,#8bd272);border-radius:99px}.weekly-row{margin:14px 0}.weekly-row header{display:flex;justify-content:space-between;font-size:13px;margin-bottom:6px}.schedule{margin-top:18px}.timeline{display:flex;gap:8px;align-items:stretch;overflow:auto}.event-chip{min-width:150px;border:1px solid var(--line);background:#fff;border-radius:13px;padding:11px}.event-chip strong{display:block}.section{margin-top:22px}.discover-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.discover{min-height:160px;position:relative;overflow:hidden}.discover.ai{background:linear-gradient(145deg,#edf5ff,#f6f3ff)}.discover.world{background:linear-gradient(145deg,#f2f7ff,#edf9f5)}.discover.quest{background:linear-gradient(145deg,#fff8dc,#eff9e9)}.pixel-bot{position:absolute;right:16px;bottom:14px;font-size:42px}.end-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:18px}.fields{display:grid;gap:9px}.input,textarea,select{width:100%;border:1px solid #dbe4ef;border-radius:11px;padding:11px 12px;background:#fff;color:var(--ink)}textarea{min-height:110px;resize:vertical}.habit{display:flex;gap:9px;align-items:center;padding:7px 0}.page-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.steps{display:flex;gap:8px}.step{padding:8px 14px;border-radius:99px;background:#edf0f4;color:#6d7687;font-weight:800}.step.active{background:var(--green2);color:#28752a}.word-card{display:grid;grid-template-columns:1fr 260px;gap:16px}.word-main{padding:26px}.word{font-size:38px;font-weight:900}.family{background:var(--blue2);border-radius:14px;padding:16px}.choice{display:flex;gap:12px;margin-top:22px}.study-panel{background:#fbfcfe;border:1px solid var(--line);border-radius:15px;padding:16px;margin-top:16px}.tabs{display:flex;gap:6px;border-bottom:1px solid var(--line);margin-bottom:15px}.tab{border:0;background:transparent;padding:10px 13px;font-weight:800;color:#68738a;border-bottom:3px solid transparent}.tab.active{color:#246eea;border-color:#246eea}.scores{display:grid;grid-template-columns:repeat(7,1fr);gap:8px}.score{background:#f7f9fc;border-radius:12px;padding:10px;text-align:center}.score b{display:block;font-size:19px}.columns{display:grid;grid-template-columns:1fr 1fr;gap:15px}.issue{padding:13px;border:1px solid var(--line);border-radius:13px;margin-bottom:9px}.issue.warn{background:#fff8e8}.issue.good{background:#eff9ed}.treasure{border:1px solid var(--line);padding:14px;border-radius:13px;margin-bottom:10px;background:#fff}.calendar-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}.day{min-height:90px;padding:8px;border:1px solid var(--line);border-radius:10px;background:white}.day strong{font-size:12px}.dot{height:6px;width:6px;border-radius:50%;display:inline-block;background:var(--blue);margin-right:4px}.exam-list{display:grid;gap:12px}.exam{display:grid;grid-template-columns:1fr auto;gap:14px}.exam .days{font-size:28px;font-weight:900;color:#2f6dcb}.parent{background:#f4f6f9}.parent .sidebar{background:#222a36;color:white}.parent .nav a{color:#d6dce6}.parent .nav a.active{background:#334052;color:#fff}.parent .card{box-shadow:none}.toast{position:fixed;right:24px;bottom:24px;background:#233249;color:#fff;padding:12px 16px;border-radius:12px;box-shadow:var(--shadow);z-index:20}.empty{color:var(--muted);padding:20px;text-align:center}.badge{display:inline-block;padding:5px 8px;border-radius:99px;font-size:12px;font-weight:800;background:var(--blue2);color:#316ab8}.badge.green{background:var(--green2);color:#2c7d30}.badge.yellow{background:var(--yellow2);color:#80620a}@media(max-width:980px){.shell{grid-template-columns:76px 1fr}.brand span,.profile strong,.profile small,.nav span,.streak{display:none}.sidebar{padding:15px 9px}.avatar{width:48px;height:48px;font-size:26px}.nav a{justify-content:center}.hero-grid,.grid-main,.word-card,.end-grid{grid-template-columns:1fr}.discover-grid{grid-template-columns:1fr}.main{padding:18px}.scores{grid-template-columns:repeat(4,1fr)}}

.handwriting-review{max-width:1100px;margin:auto}.handwriting-pages{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin:14px 0 26px}.handwriting-pages figure{margin:0;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#f7f9fc}.handwriting-page-button{display:block;width:100%;padding:0;border:0;background:#eef2f6;cursor:zoom-in;position:relative}.handwriting-page-button img{display:block;width:100%;height:360px;object-fit:contain}.handwriting-page-button span{position:absolute;right:10px;bottom:10px;padding:7px 10px;border-radius:999px;background:rgba(20,31,48,.82);color:white;font-weight:700}.handwriting-page-button:focus-visible{outline:4px solid var(--yellow);outline-offset:-4px}.handwriting-pages figcaption{padding:9px 12px;color:var(--muted);font-size:13px}.transcription-title{align-items:flex-end;margin-top:6px}.transcription-title p{margin-bottom:0}.handwriting-text{min-height:360px;line-height:1.65;font-size:17px}.ocr-progress{display:flex;gap:14px;align-items:center;padding:18px;margin:0 0 20px;border:2px solid #8dbce8;border-radius:14px;background:#edf7ff}.ocr-progress p{margin:4px 0 0}.ocr-spinner{width:28px;height:28px;border:4px solid #c9e3f8;border-top-color:#2879bd;border-radius:50%;animation:ocr-spin .8s linear infinite;flex:none}@keyframes ocr-spin{to{transform:rotate(360deg)}}.image-lightbox{width:min(94vw,1100px);max-height:94vh;padding:18px;border:0;border-radius:18px;box-shadow:0 24px 80px rgba(0,0,0,.35)}.image-lightbox::backdrop{background:rgba(7,14,25,.78)}.image-lightbox img{display:block;width:100%;max-height:78vh;object-fit:contain;background:#eef2f6}.image-lightbox-close{float:right;width:42px;height:42px;border:0;border-radius:50%;font-size:28px;cursor:pointer}

.prompt-controls{display:grid;grid-template-columns:150px minmax(260px,1fr) minmax(190px,.7fr);gap:12px;margin:14px 0}.prompt-controls label{font-weight:800}.prompt-controls select{margin-top:6px;font-weight:500}.exam-writing-task{border:2px solid #bfd6f5;border-radius:16px;background:#f8fbff;padding:20px;margin:14px 0 20px}.exam-writing-task .task-prompt{font-size:19px;line-height:1.55;color:#172b46;background:#fff;padding:16px;border-left:5px solid var(--blue);border-radius:8px}.exam-instructions{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 0;margin-bottom:14px}.exam-writing-task li{margin:7px 0}@media(max-width:980px){.prompt-controls{grid-template-columns:1fr}}
.coach-bar{position:fixed;right:16px;bottom:16px;z-index:40;display:flex;flex-direction:column;align-items:flex-end;gap:8px}
.coach-bar-toggle{border-radius:999px;padding:10px 18px;background:#fff;border:1px solid var(--line);box-shadow:0 4px 14px rgba(15,30,60,.14);cursor:pointer;font-weight:600}
.coach-bar-body{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 10px 30px rgba(15,30,60,.18);padding:14px;width:min(320px,calc(100vw - 32px))}
.coach-bar-body p{margin:0 0 8px}
.coach-bar-actions{display:flex;flex-wrap:wrap;gap:6px}
.coach-bar-btn{font-size:12px;padding:6px 10px}
.coach-help{margin-top:10px;padding:10px;background:#f2f8ff;border:1px solid #cfe4f8;border-radius:10px}
.coach-help.warn{background:#fff8ed;border-color:#f0dcbf}
.coach-help p{margin:0 0 6px;font-size:14px}
.coach-help p:last-child{margin-bottom:0}
@media(max-width:640px){.coach-bar{right:10px;bottom:10px}}
.quest-card{background:linear-gradient(160deg,#eef6ff 0%,#f8fbff 100%);border:2px solid #bcd7f2;border-radius:16px;padding:18px;margin:4px 0 10px;box-shadow:0 3px 10px rgba(30,70,130,.08)}
.quest-head{display:flex;align-items:center;gap:8px;margin-bottom:6px}
.quest-icon{font-size:24px}.quest-head b{font-size:15px;color:#33506e;letter-spacing:.3px;text-transform:uppercase}
.quest-hook{font-size:18px;font-weight:700;color:#16365c;margin:2px 0 8px;line-height:1.35}
.quest-task{font-size:14px;color:#42597a;margin:0 0 10px}
.quest-facts{display:flex;gap:10px;margin-bottom:12px}
.quest-fact{background:#fff;border:1px solid #d5e5f5;border-radius:999px;padding:4px 12px;font-size:13px;font-weight:600;color:#2c527e}
.quest-go{width:100%;font-size:18px;font-weight:700;padding:14px;border-radius:12px;cursor:pointer;letter-spacing:.3px}
.quest-next{font-size:13px;color:#5a6f8a;margin:8px 0 0}
.quest-opts{font-size:13px;color:#7c8ba0;margin:10px 0 0}
.quest-opt{color:#3b76c9;text-decoration:none}
.quest-opt:hover{text-decoration:underline}
.quest-muted{font-size:12px;color:#a3aebb;margin-top:8px}
.coach-card{border-left:5px solid var(--blue,#3b82f6)}.coach-ask{display:flex;gap:8px;margin:10px 0}.coach-ask .input{flex:1}.coach-quick{display:flex;flex-wrap:wrap;gap:8px}.coach-quick-btn{font-size:13px}
.coach-summary{font-size:16px;color:#1c2b45;margin:0 0 14px;font-weight:600}
.coach-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}
.coach-step{background:#f8fbff;border:1px solid var(--line);border-radius:12px;padding:14px}
.coach-step-head{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.coach-step-icon{font-size:20px}.coach-step-head b{flex:1;font-size:15px}
.coach-step p{margin:0 0 6px}.coach-step small{font-size:13px;color:#4a5a72}
.coach-why{margin:14px 0}.coach-why summary{cursor:pointer;font-size:14px;color:var(--muted)}.coach-why ul{margin:8px 0 0 18px;font-size:14px}
.coach-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.alert-card{border-left:5px solid #d98324;background:#fff8ed}.alert-card h2{margin:0 0 12px;color:#8a4b09}.alert-item{margin:0 0 12px;padding:0 0 12px;border-bottom:1px solid #f0dcbf}.alert-item:last-of-type{border-bottom:0;margin-bottom:6px}.alert-item b{color:#8a4b09;display:block;margin-bottom:4px}.alert-item p{margin:0 0 6px;font-size:14px}
.write-option-split{display:flex;align-items:center;gap:12px;margin:22px 0 16px;color:var(--muted);font-size:13px}.write-option-split::before,.write-option-split::after{content:'';flex:1;height:1px;background:var(--line)}#writeNowHandwriting h3{margin:0 0 8px;font-size:16px}#writeNowHandwriting p{margin:0 0 12px;font-size:14px}.essay-text{max-height:340px;overflow:auto;background:#fbfdff;border:1px solid var(--line);border-radius:12px;padding:18px 20px}.essay-text p{margin:0 0 14px;line-height:1.75;font-size:16px;color:#1c2b45;white-space:normal}.essay-text p:last-child{margin-bottom:0}.handwriting-strip{display:flex;flex-wrap:wrap;gap:12px;margin-top:12px}.handwriting-strip img{max-width:100%;width:260px;border:1px solid var(--line);border-radius:10px;background:#fff}
.pronunciation{margin:-4px 0 10px}.ipa{font-family:"Times New Roman",Times,Georgia,serif;font-size:20px;letter-spacing:.4px;color:#1d4f8c;background:#eaf4ff;border:1px solid #cfe4f8;border-radius:7px;padding:2px 9px;display:inline-block}
.edutest-feature{grid-column:1/-1;padding:22px 24px;border:2px solid var(--accent,#2f80ed);background:linear-gradient(120deg,#fff7e6,#fff);box-shadow:0 6px 20px rgba(47,128,237,.12)}
.edutest-feature h2{margin:0;font-size:22px}
.edutest-feature p{margin:6px 0}
.edutest-feature .sub{margin-top:8px}
.edutest-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.ext-ex-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:8px 0 6px}
.ext-ex-card{display:block;text-decoration:none;padding:12px 14px;border:2px dashed #dfc998;border-radius:14px;background:rgba(255,255,255,.55);transition:box-shadow .18s,transform .18s,border-color .18s}
.ext-ex-card:hover{box-shadow:var(--shadow-md,0 10px 24px rgba(20,30,50,.14));transform:translateY(-2px);border-color:#d3b878}
.ext-ex-card h4{margin:0 0 4px;font-size:15px;font-weight:800;color:#1f2a3d}
.ext-ex-card p{margin:0;font-size:13.5px;line-height:1.5;color:#52627a}
.ext-ex-card .ext-go{display:inline-block;margin-top:8px;font-size:13px;font-weight:700;color:#1d6fe0}
@media(max-width:760px){.ext-ex-grid{grid-template-columns:1fr}}

/* ============ DennisNOVA — light theme ============ */
.nova-head{display:flex;align-items:flex-end;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin-bottom:.5rem}
.nova-head h1{font-size:1.6rem;font-weight:800;margin:0;letter-spacing:-.02em}
.nova-head .sub{color:var(--muted);font-size:.9rem;margin:.3rem 0 0;max-width:560px;line-height:1.5}
.nova-tabs{display:flex;flex-wrap:wrap;gap:.4rem;margin:.6rem 0 1.1rem}
.nova-tab{font-size:.8rem;font-weight:500;padding:.42rem .85rem;border:1px solid var(--line);border-radius:999px;background:var(--panel);color:var(--muted);cursor:pointer;transition:all .2s}
.nova-tab:hover{color:var(--ink);border-color:var(--blue)}
.nova-tab.active{background:var(--blue);color:#fff;border-color:var(--blue)}
.nova-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.1rem}
@media(max-width:900px){.nova-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.nova-grid{grid-template-columns:1fr}}
.nova-course{background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .25s,transform .25s}
.nova-course:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.nova-course.selected{border-color:var(--green);box-shadow:0 0 0 2px var(--green2)}
.nova-cover{position:relative;height:150px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.nova-cover::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 78% 22%,rgba(255,255,255,.28),transparent 45%),linear-gradient(180deg,transparent 55%,rgba(0,0,0,.12))}
.nova-cover .nova-cover-emoji{font-size:3.4rem;filter:drop-shadow(0 4px 8px rgba(0,0,0,.18));position:relative;z-index:1}
.nova-cover .nova-cover-initial{position:absolute;right:-6px;bottom:-22px;font-size:7rem;font-weight:900;color:rgba(255,255,255,.16);line-height:1;z-index:0;user-select:none}
.nova-cover .nova-course-cat{position:absolute;left:10px;top:10px;display:flex;gap:.3rem;flex-wrap:wrap;z-index:2}
.nova-cat-pill{font-size:.62rem;font-weight:600;letter-spacing:.02em;padding:.18rem .5rem;border-radius:999px;background:rgba(255,255,255,.9);color:#333}
.nova-course-content{padding:.95rem 1.05rem 1.1rem;display:flex;flex-direction:column;flex:1}
.nova-course-name{font-size:1.05rem;font-weight:700;color:var(--ink);line-height:1.3;margin-bottom:.5rem}
.nova-course-desc{font-size:.86rem;color:var(--muted);line-height:1.6;margin-bottom:.5rem;display:-webkit-box;-webkit-line-clamp:6;-webkit-box-orient:vertical;overflow:hidden}
.nova-course-desc.expanded{display:block;overflow:visible}
.nova-course-meta{font-size:.7rem;color:var(--muted);margin-bottom:.6rem;display:flex;flex-wrap:wrap;gap:.6rem}
.nova-course-meta span{background:var(--blue2);color:var(--blue);padding:.15rem .5rem;border-radius:6px}
.nova-read-more{font-size:.74rem;font-weight:600;color:var(--blue);background:none;border:none;padding:0;cursor:pointer;margin-bottom:.7rem;display:block;text-align:left}
.nova-read-more:hover{text-decoration:underline}
.nova-add{margin-top:auto;font-size:.82rem;font-weight:600;padding:.6rem;border-radius:10px;border:1px solid var(--line);background:var(--panel);color:var(--ink);cursor:pointer;transition:all .2s}
.nova-add:hover{border-color:var(--green);color:var(--green)}
.nova-add.added{color:#fff;background:var(--green);border-color:var(--green)}
.nova-add.loading{opacity:.7;cursor:progress;color:var(--green);border-color:var(--green)}
.nova-empty{color:var(--muted);font-style:italic;padding:1rem 0}

/* ===== DennisNOVA hero (space / Minecraft vibe) ===== */
.nova-hero{position:relative;margin:0 0 18px}
.nova-hero-art{position:relative;width:150px;height:110px;flex-shrink:0}
.nova-hero-art .star{position:absolute;width:3px;height:3px;border-radius:50%;background:#fff;opacity:.85;box-shadow:0 0 6px #fff}
.nova-hero-art .s1{top:14%;left:18%}.nova-hero-art .s2{top:30%;left:60%;width:2px;height:2px}.nova-hero-art .s3{top:62%;left:30%}.nova-hero-art .s4{top:48%;left:82%;width:2px;height:2px}
.nova-hero-art .planet{position:absolute;right:6px;top:18px;width:58px;height:58px;border-radius:50%;background:radial-gradient(circle at 32% 30%,#7fb2ff,#3b5bbf 60%,#22306e);box-shadow:0 0 22px rgba(120,160,255,.5),inset -8px -8px 0 rgba(0,0,0,.18)}
.nova-hero-art .block{position:absolute;width:20px;height:20px;border-radius:4px;transform:rotate(12deg);box-shadow:inset -3px -3px rgba(0,0,0,.25)}
.nova-hero-art .b1{left:8px;bottom:6px;background:#6fd15e}.nova-hero-art .b2{left:30px;bottom:18px;background:#8f6846}.nova-hero-art .b3{left:52px;bottom:4px;background:#5aa0e0}
.nova-hero-text h1{font-size:1.9rem;font-weight:900;margin:0 0 .35rem;letter-spacing:-.02em}
.nova-hero-text p{margin:0;font-size:.95rem;line-height:1.6;color:rgba(255,255,255,.82);max-width:620px}
/* timetable */
.nova-timetable{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:1.1rem 1.2rem;margin-top:1.1rem}
.nova-timetable.empty{color:var(--muted);text-align:center;padding:1.6rem}
.nova-tt-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:.8rem}
.nova-tt-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:.7rem}
.nova-tt-cell{background:var(--blue2);border:1px solid #d2e7f7;border-radius:12px;padding:.7rem .8rem;display:flex;flex-direction:column;gap:.2rem}
.nova-tt-cell b{font-size:.92rem;color:var(--ink)}
.nova-tt-cell small{color:var(--muted);font-size:.72rem}
.nova-tt-cell .nova-rm{margin-top:.3rem;align-self:flex-start;font-size:.72rem;padding:.3rem .6rem;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--muted);cursor:pointer}
.nova-tt-plans{margin-top:.9rem;display:flex;flex-direction:column;gap:.5rem}
.nova-plan-chip{display:flex;align-items:center;justify-content:space-between;gap:.6rem;background:#eafaf0;border:1px solid #cdeed3;border-radius:12px;padding:.6rem .8rem}
.nova-plan-chip span{font-size:.85rem;color:var(--ink)}
/* catalog groups */
.nova-group{margin-top:1.4rem}
.nova-group:first-child{margin-top:.4rem}
.nova-group-head{display:flex;align-items:center;gap:.6rem;cursor:pointer;user-select:none;padding:.5rem .2rem;border-bottom:2px solid var(--line);margin-bottom:.9rem}
.nova-group-head h3{margin:0;font-size:1.15rem;font-weight:700;color:var(--ink)}
.nova-group-emoji{font-size:1.3rem}
.nova-group-count{font-size:.78rem;color:var(--muted);background:var(--blue2);padding:.15rem .55rem;border-radius:999px}
.nova-chevron{margin-left:auto;color:var(--muted);transition:transform .25s}
.nova-group.collapsed .nova-chevron{transform:rotate(-90deg)}
.nova-group.collapsed .nova-grid,.nova-group.collapsed .nova-showmore{display:none}
.nova-showmore{margin:.8rem 0 .2rem;font-size:.82rem;font-weight:600;color:var(--blue);background:none;border:1px dashed var(--blue);border-radius:10px;padding:.5rem 1rem;cursor:pointer}
.nova-showmore:hover{background:var(--blue2)}
.nova-hidden{display:none}
/* learn page */
.nova-learn{height:calc(100vh - 40px);display:flex;flex-direction:column}
.nova-learn-bar{display:flex;align-items:center;gap:1rem;padding:.8rem 1rem;border-bottom:1px solid var(--line);background:var(--panel)}
.nova-learn-prog{font-size:.9rem;color:var(--muted)}
.nova-learn-body{flex:1;display:grid;grid-template-columns:280px 1fr;min-height:0}
.nova-learn-side{border-right:1px solid var(--line);padding:1.2rem;background:var(--panel);overflow:auto}
.nova-learn-side h3{font-size:1rem;margin:0 0 1rem}
.nova-learn-steps{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.5rem}
.nova-learn-steps li{padding:.6rem .7rem;border-radius:10px;background:var(--blue2);font-size:.85rem;color:var(--ink)}
.nova-learn-steps li small{display:block;color:var(--muted);font-size:.7rem}
.nova-learn-steps li.active{background:var(--blue);color:#fff}
.nova-learn-steps li.active small{color:rgba(255,255,255,.8)}
.nova-learn-steps li.done{opacity:.6}
.nova-learn-main{display:flex;flex-direction:column;min-height:0;padding:1.2rem}
.nova-learn-goal{background:#fff8e8;border:1px solid #f3e2b8;border-radius:12px;padding:.7rem .9rem;font-size:.88rem;color:#7a5b16;margin-bottom:1rem}
.nova-chat{flex:1;overflow:auto;display:flex;flex-direction:column;gap:.7rem;padding:.4rem}
.nova-chat .me{background:var(--blue2);align-self:flex-end;max-width:75%;padding:.6rem .9rem;border-radius:14px 14px 2px 14px;font-size:.9rem;color:var(--ink);margin:0}
.nova-chat .nova{background:var(--panel);align-self:flex-start;max-width:80%;padding:.6rem .9rem;border-radius:14px 14px 14px 2px;border:1px solid var(--line);font-size:.9rem;color:var(--ink);margin:0}
.nova-chat .nova i{color:var(--muted);font-size:.8rem}
.nova-chat-input{display:flex;gap:.6rem;margin-top:.8rem}

/* ===== Minecraft vibe for home hero ===== */
.hero .mc{position:absolute;width:26px;height:26px;border-radius:4px;box-shadow:inset -4px -4px rgba(0,0,0,.12),inset 4px 4px rgba(255,255,255,.25);image-rendering:pixelated;opacity:.9}
.hero .mc.grass{background:linear-gradient(#6fce5c 0 38%,#9b6f43 38%)}
.hero .mc.dirt{background:#9b6f43}
.hero .mc.stone{background:#9aa3ad}
.hero .mc.blue{background:#5b8def}
.hero .mc.green{background:#59b85a}
.hero .mc.yellow{background:#f2bd35}
.hero .mc1{left:6%;bottom:8px;transform:rotate(-4deg)}
.hero .mc2{left:12%;bottom:34px;transform:rotate(3deg)}
.hero .mc3{left:18%;bottom:14px}
.hero .mc4{right:30%;bottom:10px;transform:rotate(5deg)}
.hero .mc5{right:24%;bottom:40px}
.hero .mc6{right:14%;bottom:18px;transform:rotate(-3deg)}
/* extra hero blocks + sun + birds */
.hero .mc.leaf{background:linear-gradient(135deg,#4fa93f,#2f7a2c)}
.hero .mc.diamond{background:linear-gradient(135deg,#7fe3e0,#43b6c4)}
.hero .mc.gold{background:linear-gradient(135deg,#ffe27a,#e0a92b)}
.hero .mc.tnt{background:linear-gradient(#d84b3a 0 46%,#fff 46% 62%,#d84b3a 62%)}
.hero .mc7{left:25%;bottom:52px;transform:rotate(-6deg) scale(.9)}
.hero .mc8{right:38%;bottom:56px;transform:rotate(7deg) scale(.85)}
.hero .mc9{right:20%;bottom:74px;transform:scale(.8)}
.hero .mc10{left:32%;bottom:20px;transform:rotate(4deg) scale(.75)}
.hero .herosun{position:absolute;right:44px;top:26px;width:64px;height:64px;border-radius:50%;background:radial-gradient(circle at 38% 36%,#fff6c9,#ffd94a 62%,#ffc93c);box-shadow:0 0 0 10px rgba(255,217,74,.15);opacity:.95}
.hero .bird{position:absolute;width:9px;height:9px;border-left:3px solid #8fa7bd;border-bottom:3px solid #8fa7bd;transform:rotate(-45deg);opacity:.6;animation:flap 3.4s ease-in-out infinite}
.hero .hb1{right:190px;top:52px;animation-delay:-.6s}
.hero .hb2{right:150px;top:70px;transform:rotate(-45deg) scale(.8);animation-delay:-1.8s}
.hero .cloud.c3{right:250px;top:14px;transform:scale(.55);opacity:.75}
.hero h1,.hero p{position:relative;z-index:2}

/* ===== Minecraft sky background (light, decorative, behind everything) ===== */
.sky{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden;background:linear-gradient(180deg,#dff0ff 0%,#eaf6ff 38%,#f7fbff 72%,#fbfcfd 100%)}
.shell,.nova-page,.parent .shell{position:relative;z-index:1}
/* sun */
.sky .sun{position:absolute;top:38px;right:88px;width:86px;height:86px;border-radius:50%;background:radial-gradient(circle at 38% 36%,#fff6c9,#ffd94a 62%,#ffc93c);box-shadow:0 0 0 12px rgba(255,217,74,.16),0 0 0 26px rgba(255,217,74,.08);opacity:.9}
/* pixel clouds: made of square blocks so they read as voxel art */
.sky .pxcloud{position:absolute;width:16px;height:16px;background:#fff;border-radius:2px;box-shadow:16px 0 #fff,32px 0 #fff,48px 0 #fff,64px 0 #fff,80px 0 #fff,16px -16px #fff,32px -16px #fff,48px -16px #fff,32px -32px #fff;opacity:.92;animation:drift linear infinite}
.sky .s1{top:12%;left:-14%;animation-duration:118s}
.sky .s2{top:26%;left:-22%;transform:scale(.72);animation-duration:96s;animation-delay:-24s}
.sky .s3{top:8%;left:-34%;transform:scale(1.15);animation-duration:142s;animation-delay:-58s}
.sky .s4{top:44%;left:-18%;transform:scale(.6);animation-duration:128s;animation-delay:-80s}
.sky .s5{top:62%;left:-30%;transform:scale(.85);animation-duration:156s;animation-delay:-40s}
@keyframes drift{from{transform:translateX(0) scale(var(--s,1))}to{transform:translateX(140vw) scale(var(--s,1))}}
/* birds (simple voxel "v" shapes) */
.sky .bird{position:absolute;width:8px;height:8px;border-left:3px solid #9fb6cc;border-bottom:3px solid #9fb6cc;transform:rotate(-45deg);opacity:.55;animation:flap 3.4s ease-in-out infinite}
.sky .b1{top:20%;left:18%;animation-delay:-.4s}
.sky .b2{top:23%;left:26%;animation-delay:-1.2s}
.sky .b3{top:17%;left:32%;animation-delay:-2s}

/* ===== Generating screen (course being built) ===== */
.gen-wrap{min-height:72vh;display:flex;align-items:center;justify-content:center;padding:40px;text-align:center}
.gen-card{background:rgba(46,92,32,.92);border:4px solid #234d18;border-radius:16px;padding:38px 42px;max-width:520px;box-shadow:0 12px 0 #16330f,0 0 0 8px rgba(126,200,80,.18);image-rendering:pixelated}
.gen-title{font-family:var(--font-pixel);color:#ffd66b;font-size:clamp(.95rem,2.4vw,1.25rem);letter-spacing:1px;margin:0 0 12px;line-height:1.35;font-weight:400}
.gen-sub{color:#ffe7b0;font-size:1.05rem;margin:0 0 6px;font-weight:700}
.gen-hint{color:#cdbfa6;font-size:.9rem;margin:0 0 22px}
.pixel-spinner{display:flex;gap:9px;justify-content:center;margin:0 auto 24px;width:max-content}
.pixel-spinner span{width:20px;height:20px;background:#7ec850;border:2px solid #2c4a16;animation:pxb 1s infinite ease-in-out;image-rendering:pixelated}
.pixel-spinner span:nth-child(2){animation-delay:.12s;background:#ffd66b;border-color:#7a5a16}
.pixel-spinner span:nth-child(3){animation-delay:.24s;background:#5bb0e8;border-color:#1c4a66}
.pixel-spinner span:nth-child(4){animation-delay:.36s;background:#e87c5b;border-color:#6e2f1c}
.pixel-spinner span:nth-child(5){animation-delay:.48s;background:#c79bf2;border-color:#4a2f6e}
@keyframes pxb{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(-13px) scale(1.12)}}
.gen-card .btn{margin-top:4px}
@keyframes flap{0%,100%{opacity:.28;transform:rotate(-45deg) translateY(0)}50%{opacity:.72;transform:rotate(-45deg) translateY(-6px)}}
/* floating voxel blocks */
.sky .vox{position:absolute;width:34px;height:34px;border-radius:3px;image-rendering:pixelated;opacity:.5;box-shadow:inset -5px -5px rgba(0,0,0,.14),inset 5px 5px rgba(255,255,255,.4),0 6px 16px rgba(40,70,110,.10);animation:bob ease-in-out infinite}
.sky .vox.grass{background:linear-gradient(#6fce5c 0 34%,#8f6846 34%)}
.sky .vox.dirt{background:#9b6f43}
.sky .vox.stone{background:#a7b0ba}
.sky .vox.diamond{background:linear-gradient(135deg,#7fe3e0,#43b6c4)}
.sky .vox.gold{background:linear-gradient(135deg,#ffe27a,#e0a92b)}
.sky .vox.tnt{background:linear-gradient(#d84b3a 0 46%,#f2f2f2 46% 62%,#d84b3a 62%)}
.sky .vox.leaf{background:linear-gradient(135deg,#4fa93f,#2f7a2c)}
.sky .v1{left:5%;top:34%;animation-duration:7s}
.sky .v2{left:12%;top:68%;animation-duration:9s;animation-delay:-2s;transform:scale(.8)}
.sky .v3{left:21%;top:52%;animation-duration:8s;animation-delay:-4s;transform:scale(.9)}
.sky .v4{left:73%;top:30%;animation-duration:10s;animation-delay:-1s}
.sky .v5{left:84%;top:58%;animation-duration:8.5s;animation-delay:-3s;transform:scale(.85)}
.sky .v6{left:64%;top:74%;animation-duration:9.5s;animation-delay:-5s;transform:scale(.75)}
.sky .v7{left:38%;top:78%;animation-duration:11s;animation-delay:-2.5s;transform:scale(.9)}
.sky .v8{left:48%;top:22%;animation-duration:8s;animation-delay:-6s;transform:scale(.7)}
.sky .v9{left:90%;top:20%;animation-duration:10.5s;animation-delay:-1.5s;transform:scale(.78)}
.sky .v10{left:29%;top:16%;animation-duration:9s;animation-delay:-3.5s;transform:scale(.68)}
@keyframes bob{0%,100%{transform:translateY(0) rotate(-3deg) scale(var(--vs,1))}50%{transform:translateY(-16px) rotate(3deg) scale(var(--vs,1))}}
@media (prefers-reduced-motion:reduce){.sky .pxcloud,.sky .vox,.sky .bird{animation:none}}
/* The old opaque body gradient would hide the new sky. */
body{background:transparent}

/* ===== Minecraft UI details (light theme) ===== */
/* Pixel font for the brand + a few accents; body text stays readable Inter. */
.brand{font-family:'Press Start 2P',Inter,sans-serif;font-size:11px;letter-spacing:0;line-height:1.3}
.mc-font{font-family:'Press Start 2P',Inter,sans-serif;letter-spacing:0}
/* Blocky, beveled Minecraft buttons: light top edge, dark bottom edge. */
.btn{position:relative;border-radius:0;border:0;box-shadow:inset -3px -3px 0 rgba(0,0,0,.22),inset 3px 3px 0 rgba(255,255,255,.45),0 3px 0 rgba(0,0,0,.10);transition:transform .12s,filter .12s}
.btn:hover{filter:brightness(1.06)}
.btn:active{transform:translateY(2px);box-shadow:inset -3px -3px 0 rgba(0,0,0,.22),inset 3px 3px 0 rgba(255,255,255,.35)}
.btn.ghost{background:#fff;color:#3d536e;box-shadow:inset -3px -3px 0 rgba(0,0,0,.10),inset 3px 3px 0 rgba(255,255,255,.9),0 3px 0 rgba(0,0,0,.07)}
.btn.green{background:#5fbf4f}
.btn.yellow{background:#f5c33f;color:#563f00}
/* Cards: a thin "grass" cap on the top edge gives the blocky Minecraft feel. */
.card,.mini-stat,.goal-card,.calendar-card,.treasure,.nova-course{position:relative;border-radius:14px}
.card::before,.mini-stat::before,.goal-card::before,.calendar-card::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;border-radius:14px 14px 0 0;background:linear-gradient(90deg,#6fce5c,#57b84c 40%,#8f6846 40%,#7c5a42);opacity:.85}
/* Section headings get a small voxel block marker. */
.section>h2:first-child,.card-title h2:first-child{display:flex;align-items:center;gap:9px}
/* sidebar brand logo: a small grass-on-dirt voxel block (Dennis World home icon) */
.grass-block{width:22px;height:22px;flex:none;border-radius:3px;background:linear-gradient(#6fce5c 0 42%,#8f6846 42%);box-shadow:inset -2px -2px rgba(0,0,0,.22),inset 2px 2px rgba(255,255,255,.18)}
/* Progress + XP bars become chunky voxel meters. */
.progress,.xpbar{border-radius:0;background:#dde5ee;box-shadow:inset 0 2px 0 rgba(0,0,0,.08)}
.progress i,.xpbar i{border-radius:0;background:linear-gradient(90deg,#5fbf4f,#8bd272);box-shadow:inset 0 -3px 0 rgba(0,0,0,.14)}
/* Badges look like little item chips. */
.badge{border-radius:0;box-shadow:inset -2px -2px 0 rgba(0,0,0,.10),inset 2px 2px 0 rgba(255,255,255,.6)}

/* ===== VMinecraft-style extras: plants, grass tufts, stars, rounded sun ===== */
/* friendlier, rounder sun with a subtle window-ring */
.sky .sun{border-radius:50%;background:radial-gradient(circle at 38% 36%,#fff7d0,#ffd24a 60%,#ffc02f);box-shadow:0 0 0 10px rgba(255,210,74,.18),0 0 0 22px rgba(255,210,74,.08),0 10px 30px rgba(255,190,40,.25)}
/* softer, rounder voxel blocks (bigger radius, softer shadow) */
.sky .vox{width:38px;height:38px;border-radius:9px;box-shadow:inset -6px -6px rgba(0,0,0,.12),inset 6px 6px rgba(255,255,255,.5),0 10px 22px rgba(40,70,110,.12);opacity:.62}
/* little plants growing from the ground line */
.sky .plant{position:absolute;width:40px;height:54px;bottom:0;opacity:.7;background:radial-gradient(circle at 50% 88%,transparent 16px,#7bd36a 16px 18px,transparent 18px),linear-gradient(#6cc35a,#4ea544);border-radius:50% 50% 12px 12px/70% 70% 12px 12px;transform:scaleY(.9)}
.sky .plant::before,.sky .plant::after{content:"";position:absolute;top:-10px;width:14px;height:30px;background:#6cc35a;border-radius:50% 50% 0 0;transform-origin:bottom}
.sky .plant::before{left:2px;transform:rotate(-22deg)}
.sky .plant::after{right:2px;transform:rotate(22deg)}
.sky .p1{left:6%}.sky .p2{left:46%;transform:scaleY(.7) scale(.8)}.sky .p3{right:10%}
/* grass tufts sitting low on the page */
.sky .grass-tuft{position:absolute;bottom:0;width:46px;height:26px;opacity:.6;background:radial-gradient(circle at 8px 24px,#67c356 0 6px,transparent 6px),radial-gradient(circle at 22px 22px,#5bb74c 0 7px,transparent 7px),radial-gradient(circle at 38px 24px,#67c356 0 6px,transparent 6px)}
.sky .g1{left:18%}.sky .g2{left:62%}.sky .g3{right:24%}
/* twinkle stars (subtle, only a few) */
.sky .star{position:absolute;width:5px;height:5px;background:#fff;border-radius:50%;box-shadow:0 0 8px 2px rgba(255,255,255,.7);opacity:.7;animation:twk 3.2s ease-in-out infinite}
.sky .st1{left:14%;top:14%;animation-delay:-.2s}.sky .st2{left:34%;top:9%;animation-delay:-1.1s}.sky .st3{right:22%;top:18%;animation-delay:-2s}.sky .st4{right:40%;top:8%;animation-delay:-1.6s}
@keyframes twk{0%,100%{opacity:.25;transform:scale(.7)}50%{opacity:.85;transform:scale(1.15)}}
.sky .s6{top:54%;left:-26%;transform:scale(.9);animation-duration:170s;animation-delay:-90s}
.sky .v11{left:57%;top:40%;animation-duration:10s;animation-delay:-2s;transform:scale(.7)}
.sky .v12{left:8%;top:84%;animation-duration:9s;animation-delay:-4s;transform:scale(.72)}

/* ===== Minecraft Server portal — Nova page redesign ===== */
/* Nova hero now uses the same wooden page-head style as the Exams page */
.nova-hero{position:relative;margin:0 0 18px;background:repeating-linear-gradient(90deg,#8a5a36 0 60px,#7d4f2e 60px 64px,#94623b 64px 124px,#7d4f2e 124px 128px),linear-gradient(#8a5a36,#6d4422);border:1px solid #5a3a22;border-radius:14px;padding:20px 24px;color:#fff5d8;box-shadow:0 10px 26px rgba(60,40,20,.18);overflow:hidden}
.nova-hero-wood{position:relative;display:grid;grid-template-columns:1fr 1.4fr;gap:18px;align-items:center;border-radius:14px;min-height:0;overflow:hidden}
.nova-hero-wood:before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.12),transparent 30%),radial-gradient(120% 80% at 80% 0%,rgba(255,222,140,.18),transparent 60%);pointer-events:none;border-radius:14px}
.nova-hero-wood:after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(0,0,0,.22),rgba(0,0,0,0) 55%);pointer-events:none;border-radius:14px}
/* pixel art: clouds + cubes */
.nova-hero-art{position:relative;height:170px;min-width:230px}
.nova-hero-art .ncloud{position:absolute;background:linear-gradient(#fff,#dbeafc);border:2px solid #6e8db5;border-radius:6px}
.nova-hero-art .ncloud.c1{width:80px;height:22px;top:20px;left:10px;box-shadow:14px 12px 0 -2px #fff,14px 12px 0 0 #6e8db5}
.nova-hero-art .ncloud.c2{width:60px;height:18px;top:54px;left:120px;box-shadow:10px 10px 0 -2px #fff,10px 10px 0 0 #6e8db5}
.nova-hero-art .ncloud.c3{width:50px;height:16px;top:96px;left:50px;box-shadow:8px 8px 0 -2px #fff,8px 8px 0 0 #6e8db5}
.nova-hero-art .nblock{position:absolute;width:42px;height:42px;border:2px solid rgba(0,0,0,.18);box-shadow:inset -6px -6px rgba(0,0,0,.18),inset 6px 6px rgba(255,255,255,.25);border-radius:4px;animation:float 4.5s ease-in-out infinite}
.nova-hero-art .nblock.b1{left:170px;top:60px;background:linear-gradient(#7bc95a,#4a9a36);animation-delay:-1s}
.nova-hero-art .nblock.b2{left:30px;top:130px;background:linear-gradient(#c4a06b,#7d5a32);animation-delay:-2s;width:34px;height:34px}
.nova-hero-art .nblock.b3{left:220px;top:130px;background:linear-gradient(#7ec0ff,#3a7ad1);animation-delay:-3s;width:30px;height:30px}
.nova-hero-art .nblock.b4{left:90px;top:10px;background:linear-gradient(#ffce4a,#d39020);animation-delay:-.4s;width:26px;height:26px}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
/* text */
.nova-hero-text{color:#fff5d8;text-shadow:0 2px 0 rgba(0,0,0,.35)}
.pixel-title{font-family:"Press Start 2P",monospace;letter-spacing:1px;font-size:clamp(22px,3.4vw,38px);line-height:1.15;margin:0 0 12px;color:#fff;text-shadow:3px 3px 0 #1a0e06,0 0 12px rgba(255,210,80,.4)}
.pixel-title .nova-hero-sub{font-size:.45em;color:#ffd66b;letter-spacing:2px;display:inline-block;margin-top:8px}
.nova-hero-lead{font-size:1rem;line-height:1.55;max-width:60ch;margin:0 0 14px}
.nova-hero-stats{display:flex;gap:10px;flex-wrap:wrap}
.nh-stat{background:rgba(0,0,0,.32);border:1px solid rgba(255,255,255,.18);padding:7px 14px;border-radius:10px;font-size:.9rem}
.nh-stat b{color:#ffd66b;font-size:1.1rem;margin-right:4px}

/* server 3-col layout */
.nova-server{display:grid;grid-template-columns:240px 1fr 280px;gap:16px;align-items:start}
@media (max-width:1100px){.nova-server{grid-template-columns:1fr}.nova-side,.nova-rank{order:2}}
.nova-side,.nova-rank{background:
 repeating-linear-gradient(0deg,rgba(0,0,0,.06) 0 2px,transparent 2px 6px),
 linear-gradient(#a06a3e,#7d4f2e);
 border:1px solid #5a3a22;border-radius:14px;box-shadow:0 10px 26px rgba(60,40,20,.18);overflow:hidden;color:#fff5d8}
.nova-side-head,.nova-rank-head{background:linear-gradient(#4a7a3a,#355a2a);color:#fff;font-weight:700;letter-spacing:1px;padding:9px 12px;border-bottom:2px solid #2a4422;font-size:.85rem}
.nova-side-list{list-style:none;margin:0;padding:6px}
.nova-side-list li{margin:0}
.nova-side-list a{display:flex;align-items:center;gap:9px;padding:9px 10px;border-radius:8px;color:#fff5d8;text-decoration:none;border:1px solid transparent;transition:.15s}
.nova-side-list a:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.18);transform:translateX(2px)}
.nova-side-list .dot{width:22px;text-align:center}
.nova-side-list .lbl{flex:1;font-weight:600;font-size:.9rem}
.nova-side-list .cnt{background:rgba(0,0,0,.3);padding:2px 7px;border-radius:10px;font-size:.75rem;font-weight:700}
.nova-side-list .muted{color:#cdbca0;padding:10px;font-size:.85rem}

/* rank panel */
.nova-rank-body{padding:8px;display:flex;flex-direction:column;gap:6px}
.nova-rank-row{display:grid;grid-template-columns:26px 1fr;gap:8px;padding:8px 6px;border-radius:8px;background:rgba(0,0,0,.18);border:1px solid rgba(0,0,0,.18);cursor:pointer;transition:.15s}
.nova-rank-row:hover{background:rgba(0,0,0,.3);transform:translateX(2px)}
.nova-rank-num{background:linear-gradient(#ffd66b,#c98a1a);color:#3a2306;font-weight:800;border-radius:6px;display:grid;place-items:center;font-size:.85rem}
.nova-rank-name{font-weight:700;font-size:.85rem;color:#fff5d8;line-height:1.2}
.nova-rank-cat{font-size:.7rem;color:#cdbca0;margin-top:2px}
.nova-rank-bar{height:5px;background:rgba(0,0,0,.4);border-radius:3px;margin-top:5px;overflow:hidden;border:1px solid rgba(0,0,0,.3)}
.nova-rank-bar i{display:block;height:100%;background:linear-gradient(90deg,#7ed24a,#3a7ad1);border-radius:2px;box-shadow:inset 0 1px 0 rgba(255,255,255,.3)}
.nova-rank-body .muted{color:#cdbca0;padding:10px;font-size:.85rem}

/* anchor scroll offset for nova groups */
.nova-group{scroll-margin-top:80px}

/* pixel font fallback (system) */
.pixel-title,.nh-stat b{font-family:"Courier New",monospace;font-weight:900}

/* responsive tweak */
@media (max-width:760px){.nova-hero-wood{grid-template-columns:1fr}.nova-hero-art{height:120px;min-width:0}}

/* Nova flash highlight (used when side bar / rank row jumps to a card) */
@keyframes novaFlash{0%{box-shadow:0 0 0 0 rgba(255,214,107,.0)}30%{box-shadow:0 0 0 4px rgba(255,214,107,.85),0 0 22px 6px rgba(255,214,107,.5)}100%{box-shadow:0 0 0 0 rgba(255,214,107,0)}}
.nova-flash{animation:novaFlash 1.2s ease-out;border-radius:14px}

/* ===== Global Minecraft wooden button + page banner ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:2px solid #5a3a22;border-radius:9px;padding:9px 16px;font-weight:800;font-size:14px;color:#fff5d8;background:linear-gradient(#a06a3e,#7d4f2e);box-shadow:inset 0 2px 0 rgba(255,255,255,.18),0 3px 0 #5a3a22;transition:.12s;font-family:"Courier New",monospace;letter-spacing:.3px}
.btn:hover{transform:translateY(-1px);background:linear-gradient(#b07a4e,#8a5a34)}
.btn:active{transform:translateY(1px);box-shadow:inset 0 2px 0 rgba(255,255,255,.18),0 1px 0 #5a3a22}
.btn.ghost{background:linear-gradient(#fff,#f3ecdf);color:#6d4422;border-color:#c8ab84;box-shadow:inset 0 2px 0 rgba(255,255,255,.6),0 3px 0 #c8ab84}
.btn.ghost:hover{background:linear-gradient(#fff,#fff7ea)}
.btn.green{background:linear-gradient(#7ed24a,#4a9a36);border-color:#2f6a22;box-shadow:inset 0 2px 0 rgba(255,255,255,.3),0 3px 0 #2f6a22}
.btn.yellow{background:linear-gradient(#ffd24a,#e0a020);border-color:#b07c12;color:#3a2306;box-shadow:inset 0 2px 0 rgba(255,255,255,.4),0 3px 0 #b07c12}

/* page-head: wood banner (used on Learn / Writing / etc.) */
.page-head{position:relative;background:repeating-linear-gradient(90deg,#8a5a36 0 60px,#7d4f2e 60px 64px,#94623b 64px 124px,#7d4f2e 124px 128px),linear-gradient(#8a5a36,#6d4422);border:1px solid #5a3a22;border-radius:14px;padding:16px 20px;margin-bottom:18px;color:#fff5d8;box-shadow:0 10px 26px rgba(60,40,20,.18)}
.page-head h1{color:#fff;text-shadow:2px 2px 0 #1a0e06;font-family:"Courier New",monospace;font-weight:900;margin-bottom:4px}
/* other page banners share NOVA's pixel title style */
.page-head:not(.nova-head) h1{font-family:var(--font-pixel);color:#ffd66b;letter-spacing:1px;font-weight:400;font-size:clamp(1.05rem,.9rem + 1.1vw,1.55rem);line-height:1.3}
.page-head .sub{color:#f0dcb8;text-shadow:1px 1px 0 rgba(0,0,0,.3);margin:0}
.page-head h1 small{font-size:.55em;color:#ffd66b;letter-spacing:1px;margin-left:6px;text-shadow:1px 1px 0 rgba(0,0,0,.4);font-weight:700}
.page-head h1 .nova-pixel{font-family:"Press Start 2P",monospace;font-size:.95em;color:#ffd66b;letter-spacing:2px;display:inline-block;transform:translateY(-1px)}
.page-head a{color:#ffd66b;font-weight:700}

/* ===== Minecraft characters & props on hero background ===== */
.mc-char,.mc-prop{position:absolute;z-index:0;image-rendering:pixelated;pointer-events:none;filter:drop-shadow(0 6px 8px rgba(0,0,0,.35))}
/* Steve: stacked pixel blocks */
.mc-char.steve{right:18px;bottom:6px;width:46px;height:74px;background:
 linear-gradient(#3a6b2f 0 18%,#c79a5b 18% 40%,#2f5fa6 40% 78%,#3a3a3a 78% 100%);
 border-radius:6px;box-shadow:inset -5px -5px rgba(0,0,0,.18),inset 5px 5px rgba(255,255,255,.18),0 0 0 2px #2a1d10;
 animation:walk 5s ease-in-out infinite}
.mc-char.steve::before{content:"";position:absolute;top:4px;left:9px;width:8px;height:8px;background:#0c0c0c;border-radius:2px;box-shadow:20px 0 0 #0c0c0c}
.mc-char.creeper{right:96px;bottom:4px;width:42px;height:62px;background:linear-gradient(#5fbf4a 0 70%,#3f8a30 70% 100%);border-radius:5px 5px 3px 3px;box-shadow:inset -4px -4px rgba(0,0,0,.18),inset 4px 4px rgba(255,255,255,.2),0 0 0 2px #1f4a14;animation:walk 6s ease-in-out infinite}
.mc-char.creeper::before{content:"";position:absolute;top:8px;left:9px;width:7px;height:9px;background:#0c0c0c;border-radius:2px;box-shadow:18px 0 0 #0c0c0c}
.mc-char.creeper::after{content:"";position:absolute;bottom:18px;left:8px;width:9px;height:14px;background:#1f4a14;border-radius:1px;box-shadow:16px 0 0 #1f4a14}
.mc-char.pig{right:170px;bottom:2px;width:54px;height:38px;background:linear-gradient(#e7a6b0 0 100%);border-radius:14px 14px 8px 8px;box-shadow:inset -4px -4px rgba(0,0,0,.12),inset 4px 4px rgba(255,255,255,.4),0 0 0 2px #9c6a72;animation:walk 7s ease-in-out infinite}
.mc-char.pig::before{content:"";position:absolute;right:6px;top:6px;width:14px;height:14px;background:#e7a6b0;border-radius:4px;border:2px solid #9c6a72}
.mc-char.pig::after{content:"";position:absolute;right:11px;top:11px;width:7px;height:7px;background:#3a2a2a;border-radius:2px}
/* chest */
.mc-prop.chest{left:24px;bottom:0;width:52px;height:40px;background:linear-gradient(#9c6a3a 0 40%,#7d4f2e 40% 100%);border-radius:4px;box-shadow:inset -4px -4px rgba(0,0,0,.2),inset 4px 4px rgba(255,255,255,.2),0 0 0 2px #4a2e16}
.mc-prop.chest::before{content:"";position:absolute;top:14px;left:0;right:0;height:9px;background:#caa06b;box-shadow:inset 0 -2px 0 rgba(0,0,0,.2)}
.mc-prop.chest::after{content:"";position:absolute;top:17px;left:22px;width:8px;height:8px;background:#ffd24a;border-radius:2px;box-shadow:0 0 0 1px #9a6a1a}
/* sword */
.mc-prop.sword{left:110px;bottom:2px;width:12px;height:60px;background:linear-gradient(#dfe6ee 0 70%,#9aa3ad 70% 100%);border-radius:3px;transform:rotate(12deg);box-shadow:0 0 0 2px #5a3a22}
/* pickaxe */
.mc-prop.pickaxe{left:300px;bottom:2px;width:54px;height:14px;background:linear-gradient(#9aa3ad,#cfd6de);border-radius:7px;box-shadow:0 0 0 2px #5a3a22;transform:rotate(-8deg)}
.mc-prop.pickaxe::after{content:"";position:absolute;right:-2px;top:14px;width:9px;height:46px;background:linear-gradient(#9c6a3a,#7d4f2e);border-radius:4px;box-shadow:0 0 0 2px #4a2e16}
/* torch */
.mc-prop.torch{left:430px;bottom:0;width:10px;height:48px;background:linear-gradient(#9c6a3a,#7d4f2e);border-radius:3px;box-shadow:0 0 0 2px #4a2e16}
.mc-prop.torch::before{content:"";position:absolute;top:-12px;left:1px;width:8px;height:14px;background:radial-gradient(circle at 50% 70%,#ffd24a,#ff8a1a);border-radius:50% 50% 40% 40%;box-shadow:0 0 12px 3px rgba(255,170,40,.7)}
@keyframes walk{0%,100%{transform:translateY(0)}50%{transform:translateY(-4px)}}
.mc-prop.sword{animation:walk 5.5s ease-in-out infinite}
.mc-prop.torch,.mc-prop.pickaxe,.mc-prop.chest{animation:walk 6.5s ease-in-out infinite}

/* also sprinkle a couple characters into the global sky */
.sky .sky-steve{position:absolute;right:8%;bottom:0;width:40px;height:64px;background:linear-gradient(#3a6b2f 0 18%,#c79a5b 18% 40%,#2f5fa6 40% 78%,#3a3a3a 78% 100%);border-radius:6px;box-shadow:inset -5px -5px rgba(0,0,0,.18),inset 5px 5px rgba(255,255,255,.18),0 0 0 2px #2a1d10;opacity:.5;pointer-events:none;animation:floaty 6s ease-in-out infinite}
.sky .sky-chest{position:absolute;left:30%;bottom:0;width:46px;height:34px;background:linear-gradient(#9c6a3a 0 40%,#7d4f2e 40% 100%);border-radius:4px;box-shadow:inset -4px -4px rgba(0,0,0,.2),0 0 0 2px #4a2e16;opacity:.5;pointer-events:none;animation:floaty 7s ease-in-out infinite}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}

.discover{padding:16px 18px}

/* ===== Nova: single column, My Courses on top ===== */
.nova-single{display:block;padding-top:22px}
.nova-single>.card,.nova-single>section.card{margin-bottom:16px}
.nova-single>:last-child{margin-bottom:0}
.nova-mycourse-empty{padding:18px;border:2px dashed #c8d6e8;border-radius:12px;color:#52627a;background:#f7fafe;text-align:center;font-size:.92rem}
.nova-mycourse-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px;padding-top:12px}
.nova-mycourse{position:relative;display:flex;align-items:center;gap:12px;text-align:left;padding:14px 16px;border-radius:14px;border:1px solid #e3e9f1;background:#fff;cursor:pointer;transition:.14s;box-shadow:0 6px 16px rgba(40,70,110,.08)}
.nova-mycourse:hover{transform:translateY(-2px);border-color:#7ec0ff;box-shadow:0 12px 26px rgba(40,90,160,.16)}
.nova-mycourse-emoji{width:42px;height:42px;flex:0 0 42px;display:grid;place-items:center;font-size:22px;background:linear-gradient(135deg,#e7f0ff,#d4e6ff);border-radius:10px;border:1px solid #cfe0f7}
.nova-mycourse-body{flex:1;min-width:0}
.nova-mycourse-body b{display:block;font-size:.95rem;color:#1f2a3d;line-height:1.25}
.nova-mycourse-body small{color:#7a8aa0;font-size:.78rem}
.nova-mycourse-go{flex:0 0 auto;color:#fff;background:linear-gradient(#7ed24a,#4a9a36);border:1px solid #2f6a22;padding:6px 12px;border-radius:9px;font-weight:800;font-size:.8rem;box-shadow:inset 0 2px 0 rgba(255,255,255,.25)}
.nova-mycourse-rm{position:absolute;top:6px;right:8px;width:20px;height:20px;display:grid;place-items:center;border-radius:50%;background:#ffe2e2;color:#c0392b;font-size:11px;font-weight:800;border:1px solid #f3bcbc;cursor:pointer}
.nova-mycourse-rm:hover{background:#ffcfcf}

/* ===== NOVA learn: memory profile chips + media cards ===== */
.nova-profile{display:flex;flex-wrap:wrap;gap:6px;align-items:center;padding:10px 14px;margin:10px 0 0;background:rgba(255,255,255,.7);border:1px solid #e3e9f1;border-radius:12px}
.nova-profile-label{font-size:.78rem;color:#52627a;font-weight:700;margin-right:4px}
.nova-profile .chip{font-size:.72rem;padding:3px 9px;border-radius:999px;font-weight:600}
.nova-profile .chip.green{background:#e6f7e6;color:#2f7d32;border:1px solid #b6e0b6}
.nova-profile .chip.yellow{background:#fff6e0;color:#9a6b00;border:1px solid #f0d99a}
.nova-media{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px;margin:8px 0}
.nova-media-card{display:flex;flex-direction:column;gap:4px;text-decoration:none;background:#f7fafe;border:1px solid #d8e4f5;border-radius:12px;padding:10px;color:#1f2a3d;transition:.14s}
.nova-media-card:hover{transform:translateY(-2px);border-color:#7ec0ff;box-shadow:0 10px 22px rgba(40,90,160,.14)}
.nova-media-frame{border-radius:8px;overflow:hidden;aspect-ratio:16/9;background:#000}
.nova-media-frame iframe,.nova-media-frame img{width:100%;height:100%;border:0;object-fit:cover}
.nova-media-title{font-weight:700;font-size:.86rem}
.nova-media-go{font-size:.74rem;color:#2563eb;font-weight:700}
.nova-wait{margin:8px 0 4px;padding:10px 12px;border-left:4px solid #7ec0ff;background:#eef6ff;color:#2a4a73;border-radius:8px;font-size:.86rem}

/* ===== NOVA "thinking" placeholder bubble ===== */
.nova.thinking .dots span{animation:novadots 1.2s infinite;opacity:.3}
.nova.thinking .dots span:nth-child(2){animation-delay:.2s}
.nova.thinking .dots span:nth-child(3){animation-delay:.4s}
@keyframes novadots{0%,80%,100%{opacity:.3}40%{opacity:1}}

/* ===== Exams: official page link ===== */
.exam-link{display:inline-block;margin-top:4px;color:#1d6fe0;font-weight:700;text-decoration:none;border-bottom:1px dashed #9cc4f0}
.exam-link:hover{color:#0b4fb0}

/* ===== NEXT BIG GOAL: upcoming exams list ===== */
.upcoming-list{margin-top:10px;border-top:1px dashed #d6dde7;padding-top:8px}
.upcoming-list>small{display:block;font-size:.66rem;letter-spacing:.5px;text-transform:uppercase;color:#8a97a8;font-weight:700;margin-bottom:4px}
.upcoming-item{display:flex;justify-content:space-between;align-items:center;gap:8px;text-decoration:none;color:#1f2a3d;font-size:.74rem;padding:4px 7px;border-radius:8px;background:rgba(255,255,255,.55);margin-bottom:4px}
.upcoming-item:hover{background:rgba(255,255,255,.95)}
.upcoming-item .ui{font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.upcoming-item .ud{color:#52627a;white-space:nowrap;font-size:.68rem}

/* ---- NOVA conversational modes + suggestion chips ----
   Kids rarely know how to start a chat; these give them tappable openings. */
.nova-modes{display:flex;gap:8px;margin:12px 0 8px;flex-wrap:wrap}
.nova-mode{border:1px solid var(--line);background:#fff;color:#3d536e;border-radius:99px;padding:8px 14px;font-weight:800;font-size:13px;cursor:pointer;transition:all .15s}
.nova-mode:hover{border-color:#246eea;color:#246eea}
.nova-mode.active{background:var(--blue);border-color:var(--blue);color:#fff}
.nova-chips{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:10px}
.nova-chip{border:1px dashed #c8d6e8;background:#f7faff;color:#2f5d96;border-radius:12px;padding:7px 11px;font-size:13px;cursor:pointer;transition:all .15s}
.nova-chip:hover{background:var(--blue2);border-style:solid}
@media(max-width:520px){.nova-mode{font-size:12px;padding:7px 11px}.nova-chip{font-size:12px}}

/* ---- Usage & cost dashboard ---- */
.ustats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:14px}
.ustats div{background:#f7f9fc;border:1px solid var(--line);border-radius:13px;padding:13px;text-align:center}
.ustats b{display:block;font-size:22px;font-weight:900;color:#246eea}
.ustats span{font-size:12px;color:var(--muted)}
.ustats .highlight{background:linear-gradient(145deg,#eff9ed,#f3fbf1);border-color:#bfe3bd}
.ustats .highlight b{color:#2c7d30}
.ubars{display:flex;align-items:flex-end;gap:6px;height:150px;padding-top:10px;overflow-x:auto}
.ubar{flex:1 1 22px;min-width:22px;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%}
.ubar i{width:100%;max-width:26px;background:linear-gradient(180deg,#58b95b,#8bd272);border-radius:5px 5px 0 0;display:block}
.ubar span{font-size:10px;color:var(--muted);margin-top:5px;white-space:nowrap}
.utable{width:100%;border-collapse:collapse;font-size:14px}
.utable th,.utable td{text-align:left;padding:9px 8px;border-bottom:1px solid var(--line)}
.utable th{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.03em}
.utable td:not(:first-child){text-align:right;font-variant-numeric:tabular-nums}
@media(max-width:980px){.ustats{grid-template-columns:repeat(2,1fr)}}

/* ---- Growth centre ---- */
.ach-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:13px}
.ach{border:1px solid var(--line);border-radius:15px;padding:15px;text-align:center;background:#fff;opacity:.72}
.ach.earned{opacity:1;background:linear-gradient(145deg,#fff8dc,#eff9e9);border-color:#cfe6c8}
.ach-icon{font-size:34px;margin-bottom:7px}
.ach b{display:block;margin-bottom:4px}
.ach small{display:block;color:var(--muted);font-size:12px;min-height:30px}

/* ---- Pathfinder 升学规划顾问 ---- */
.tabs{display:flex;gap:8px;margin:0 0 16px}
.tabs .tab{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 16px;font-size:.88rem;font-weight:600;color:var(--muted);cursor:pointer}
.tabs .tab.on,.tabs .tab.active{background:var(--accent,#4caf50);color:#fff;border-color:transparent}
/* Subject switcher nested inside the Growth page's knowledge-map tab. */
.tabs.sub-tabs{margin:0 0 12px}
.tabs.sub-tabs .tab{font-size:.82rem;padding:6px 13px}
.counselor-wrap{display:flex;flex-direction:column;gap:16px}
.counselor-intro{background:linear-gradient(145deg,#eef4ff,#f6f0ff);border:1px solid #d6e2ff;border-radius:14px;padding:14px;font-size:.9rem;line-height:1.5}
.counselor-form{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px;background:#fafbfc;border:1px solid var(--line);border-radius:14px;padding:16px}
.counselor-field{display:flex;flex-direction:column;gap:5px;font-size:.84rem;font-weight:600}
.counselor-field input,.counselor-field select,.counselor-field textarea{border:1px solid var(--line);border-radius:9px;padding:8px 10px;font-size:.9rem;font-weight:400;font-family:inherit}
.counselor-form .btn{grid-column:1/-1;justify-self:start}
.counselor-questions{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 18px;font-size:.85rem}
.counselor-questions ul{margin:8px 0 0;padding-left:18px;line-height:1.7}
.counselor-questions li{color:var(--muted)}
.counselor-chat{display:flex;flex-direction:column;gap:8px;max-height:340px;overflow:auto;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px}
.counselor-chat .p{background:#e8f5e9;border-radius:10px;padding:8px 12px;align-self:flex-end;max-width:88%;font-size:.9rem}
.counselor-chat .c{background:#f3f0ff;border-radius:10px;padding:8px 12px;align-self:flex-start;max-width:92%;font-size:.9rem;line-height:1.5}
.counselor-input{display:flex;gap:8px;flex-wrap:wrap}
.counselor-input input{flex:1;min-width:220px;border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-size:.9rem;font-family:inherit}
.counselor-report{margin-top:8px}
.counselor-report .chips{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0 14px}
.counselor-report .chip{background:#eef4ff;color:#2a5bd7;border:1px solid #cfe0ff;border-radius:999px;padding:3px 10px;font-size:.78rem;font-weight:600}
.counselor-table{width:100%;border-collapse:collapse;margin:6px 0 14px;font-size:.84rem}
.counselor-table th,.counselor-table td{border:1px solid var(--line);padding:7px 10px;text-align:left;vertical-align:top}
.counselor-table th{background:#f5f7fa;font-weight:700}
.counselor-table td.bad{color:#c0392b;font-weight:700}
.counselor-table td.good{color:#2f7d32;font-weight:700}

/* ---- Unified review page (复盘) ---- */
.review-item{border:1px solid var(--line);border-radius:12px;margin:8px 0;background:#fff;overflow:hidden}
.review-item.miss{border-left:4px solid #e6a23c;background:#fffaf3}
.review-item.ok{border-left:4px solid #67c23a}
.review-item summary{padding:11px 14px;cursor:pointer;font-size:.92rem;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.review-item summary b{flex:1;min-width:200px;font-weight:600}
.review-item summary small{color:var(--muted);font-size:.75rem;background:#f2f4f7;border-radius:999px;padding:2px 8px}
.review-opts{list-style:none;margin:0;padding:6px 14px 10px}
.review-opts li{padding:5px 9px;border-radius:8px;margin:3px 0;font-size:.88rem;color:var(--muted)}
.review-opts li.opt-right{background:#eaf7ec;color:#256b2b;font-weight:600}
.review-opts li.opt-wrong{background:#fdeaea;color:#a83232;font-weight:600}
.review-why{margin:0 14px 12px;padding:9px 12px;background:#f4f7fb;border-radius:9px;font-size:.86rem;line-height:1.55}
.review-why b{color:#2a5bd7}
.review-steps{padding-left:20px;line-height:1.9}
.review-steps li{margin-bottom:10px}
.review-steps small{color:var(--muted)}
.review-steps .btn{margin-left:6px;padding:2px 10px;font-size:.78rem}

/* ---- 今日闯关路线 ---- */
.quest-route{display:flex;flex-direction:column;gap:9px}
.quest-step{display:flex;align-items:flex-start;gap:11px;border:1px solid var(--line);border-radius:12px;padding:10px 12px;background:#fff}
.quest-step.done{background:#f6f9f6;border-color:#cfe6cf}
.step-no{flex:0 0 26px;height:26px;border-radius:50%;background:var(--accent,#4caf50);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.85rem}
.quest-step.done .step-no{background:#9ccc9c}
.step-body{flex:1;min-width:0}
.step-title{display:flex;align-items:center;gap:7px;flex-wrap:wrap}
.step-title b{font-size:.94rem}
.src-badge{font-size:.7rem;font-weight:700;border-radius:999px;padding:2px 8px}
.src-badge.goal{background:#e8f0ff;color:#2a5bd7}
.src-badge.weak{background:#fff1e0;color:#b26a00}
.src-badge.review{background:#f3e8ff;color:#7b3fbf}
.step-why{margin-top:3px;font-size:.8rem;color:var(--muted);line-height:1.45}

/* ---- 目标阶梯 ---- */
.goal-ladder .ladder{display:flex;flex-direction:column;gap:8px;margin-top:6px}
.ladder-step{display:flex;gap:10px;align-items:flex-start;border:1px solid var(--line);border-radius:12px;padding:9px 11px;background:#fff}
.ladder-step.current{border-color:#7fb2ff;background:#f5f9ff}
.ladder-step.done{background:#f6f9f6}
.ladder-step.extended{border-color:#f0c88a;background:#fffaf2}
.ls-mark{font-size:1rem;line-height:1.5}
.ls-body{flex:1;min-width:0}
.ls-head{display:flex;justify-content:space-between;gap:8px;align-items:baseline}
.ls-head b{font-size:.88rem}
.ls-val{font-size:.76rem;color:var(--muted);white-space:nowrap}
.ls-desc{font-size:.82rem;color:var(--muted);margin:2px 0 5px}

/* ---- NOVA helper docked on the practice page ---- */
/* ===== Practice: reading passage block ===== */
.passage-block{margin:8px 0 10px;padding:12px 14px;background:#fbf7ee;border:1px solid #e8ddc4;border-radius:10px;font-size:15px;line-height:1.7;color:#4a4234}

.nova-helper{position:fixed;right:18px;bottom:18px;width:300px;z-index:40;font-size:.86rem}
.nh-head{background:linear-gradient(135deg,#6c5ce7,#4a3fc4);color:#fff;border-radius:12px 12px 0 0;padding:9px 13px;cursor:pointer;font-weight:600;box-shadow:0 3px 12px rgba(0,0,0,.16)}
.nh-body{background:#fff;border:1px solid var(--line);border-top:none;border-radius:0 0 12px 12px;padding:10px;box-shadow:0 6px 20px rgba(0,0,0,.16)}
.nh-msgs{max-height:210px;overflow:auto;display:flex;flex-direction:column;gap:6px;margin-bottom:8px}
.nh-msgs p{margin:0;padding:6px 9px;border-radius:9px;line-height:1.5}
.nh-tip{background:#f4f7fb;color:var(--muted);font-size:.8rem}
.nh-me{background:#e8f5e9;align-self:flex-end;max-width:92%}
.nh-nova{background:#f3f0ff;align-self:flex-start;max-width:96%}
.nh-chips{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:7px}
.chip-btn{border:1px solid var(--line);background:#fafbfc;border-radius:999px;padding:4px 10px;font-size:.76rem;cursor:pointer;font-family:inherit}
.chip-btn:hover{background:#eef4ff;border-color:#cfe0ff}
.nh-input{display:flex;gap:5px}
.nh-input input{flex:1;min-width:0;border:1px solid var(--line);border-radius:9px;padding:6px 9px;font-size:.84rem;font-family:inherit}
.nh-input .btn{padding:5px 12px;font-size:.8rem}
@media(max-width:900px){.nova-helper{display:none}}

/* ---- 自动课程：大纲编辑器 + 课时播放 ---- */
.autoc-form{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end;margin-top:10px}
.autoc-form label{display:flex;flex-direction:column;gap:4px;font-size:.82rem;font-weight:600}
.autoc-form select,.autoc-form input{border:1px solid var(--line);border-radius:9px;padding:8px 10px;font-family:inherit}
.ol-list{display:flex;flex-direction:column;gap:8px;margin:10px 0}
.ol-item{display:flex;gap:10px;align-items:center;border:1px solid var(--line);border-radius:12px;padding:9px 11px;background:#fff}
.ol-no{flex:0 0 24px;height:24px;border-radius:50%;background:var(--accent,#4caf50);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.8rem}
.ol-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:3px}
.ol-body small{color:var(--muted);font-size:.76rem}
.ol-title{border:none;border-bottom:1px dashed transparent;font-weight:600;font-size:.92rem;background:transparent;padding:2px 0;font-family:inherit;width:100%}
.ol-title:focus{border-bottom-color:var(--accent);outline:none}
.ol-meta{display:flex;gap:8px;align-items:center;font-size:.78rem;color:var(--muted)}
.ol-num{width:52px;border:1px solid var(--line);border-radius:7px;padding:3px 6px;font-size:.8rem;font-family:inherit}
.ol-ops{display:flex;gap:4px}
.ol-ops .btn{padding:2px 8px;font-size:.8rem}
.lesson-scene{animation:sceneIn .25s ease}
@keyframes sceneIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.ex-opts{display:flex;flex-direction:column;gap:7px;margin-top:10px}
.ex-opt{border:1px solid var(--line);border-radius:10px;padding:9px 12px;text-align:left;font-size:.92rem;background:#fff;line-height:1.5}
.ex-opt.btnlike{cursor:pointer;font-family:inherit}
.ex-opt.btnlike:hover:not(:disabled){border-color:var(--accent,#4caf50);background:#f4faf4}
.ex-opt.right{background:#eaf7ec;border-color:#67c23a;color:#256b2b;font-weight:600}
.ex-opt.wrong{background:#fdeaea;border-color:#e6a23c;color:#a83232}
.ex-opt:disabled{opacity:.75;cursor:default}

/* ---- Lesson teaching cards (PPT-style frames) ---- */
/* Visual slide header: big emoji anchor + title, like a deck opening each slide. */
.scene-visual{display:flex;align-items:center;gap:14px;padding:6px 4px 14px}
.scene-emoji{font-size:2.6rem;line-height:1;flex:0 0 auto;width:64px;height:64px;display:grid;place-items:center;
  background:linear-gradient(135deg,#eef2ff,#f7f0ff);border-radius:16px;box-shadow:0 2px 10px rgba(108,92,231,.12)}
.scene-visual-meta{display:flex;flex-direction:column;gap:5px;min-width:0}
.scene-h{margin:0;font-size:1.45rem;line-height:1.2;color:#222}
/* Cartoon illustration: local inline SVG, kept compact so it supports learning
   rather than crowding the lesson screen. */
.scene-cartoon{margin:14px 0 4px;width:100%;max-width:300px}
.scene-cartoon svg{width:100%;height:auto;display:block;border-radius:18px;
  box-shadow:0 4px 16px rgba(108,92,231,.14);border:1px solid rgba(108,92,231,.12)}
/* Educational video card — opens a kid-friendly YouTube search. */
.scene-video{display:flex;align-items:center;gap:12px;margin:14px 0 2px;padding:12px 14px;border:1px solid #e3e8f0;
  border-radius:14px;background:linear-gradient(135deg,#fff,#f6f9ff);text-decoration:none;color:inherit;transition:.15s}
.scene-video:hover{border-color:#6c5ce7;box-shadow:0 4px 16px rgba(108,92,231,.14);transform:translateY(-1px)}
.scene-video .vid-ico{font-size:1.6rem;flex:0 0 auto}
.scene-video .vid-text{display:flex;flex-direction:column;gap:1px;flex:1;min-width:0}
.scene-video .vid-text small{color:var(--muted);font-size:.8rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.scene-video .vid-go{margin-left:auto;color:#6c5ce7;font-weight:700;font-size:.85rem;flex:0 0 auto}
.lesson-scene .frame-box{border:1px solid var(--line);border-left:4px solid var(--accent,#4caf50);
  background:#fbfdff;border-radius:12px;padding:14px 16px;margin-top:10px}
.lesson-scene .why-box{display:flex;gap:10px;background:#f3f8ff;border:1px solid #d9e6ff;
  border-radius:12px;padding:12px 14px;line-height:1.7}
.lesson-scene .why-ico{font-size:1.25rem;flex:0 0 auto}
.lesson-scene .analogy-box{display:flex;gap:10px;background:#fff7ec;border:1px solid #ffe2b8;
  border-radius:12px;padding:12px 14px;line-height:1.7;margin-bottom:12px}
.lesson-scene .analogy-ico{font-size:1.25rem;flex:0 0 auto}
.lesson-scene .diagram-box{background:#0f1830;color:#e8eefc;border-radius:12px;padding:14px 16px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9rem;line-height:1.6;
  white-space:pre-wrap;overflow-x:auto;margin:0}
.lesson-scene .step-list{counter-reset:st;display:grid;gap:10px;margin:4px 0 0;padding:0;list-style:none}
.lesson-scene .step-list li{counter-increment:st;display:flex;gap:12px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:11px 14px;line-height:1.6}
.lesson-scene .step-list li::before{content:counter(st);flex:0 0 auto;width:26px;height:26px;
  border-radius:50%;background:var(--accent,#4caf50);color:#fff;font-weight:700;font-size:.85rem;
  display:grid;place-items:center}
.lesson-scene .tip-line{margin-top:12px;color:#8a6d3b;background:#fff8ec;border:1px solid #ffe2b8;
  border-radius:10px;padding:8px 12px;font-size:.9rem}

/* ---- Whole-course plan shown inside the lesson rail ---- */
.course-mini{border-bottom:1px solid var(--line);padding:10px 8px;background:#fbfcff}
.course-mini .cm-head{display:flex;flex-direction:column;gap:1px;margin-bottom:8px;padding:0 4px}
.course-mini .cm-head b{font-size:.8rem;letter-spacing:.02em;color:var(--muted)}
.course-mini .cm-head .sub{font-size:.72rem;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.course-mini .cm-list{display:grid;gap:4px}
.cm-item{display:flex;align-items:center;gap:8px;width:100%;text-align:left;border:1px solid transparent;
  background:transparent;border-radius:9px;padding:6px 8px;cursor:pointer;font-size:.82rem;color:#3a4256}
.cm-item:hover{background:#eef3ff;border-color:#d4e0ff}
.cm-item.cur{background:#e7f7ec;border-color:#bfe6c9;font-weight:700;color:#1f7a3d}
.cm-no{flex:0 0 auto;width:20px;height:20px;border-radius:50%;background:#e8edf6;color:#5a6b86;font-size:.7rem;
  font-weight:700;display:grid;place-items:center}
.cm-item.cur .cm-no{background:#2f9e54;color:#fff}
.cm-t{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* ---- PPT-style upgrades: rail tabs, mind map, score chip ---- */
.rail-tabs{display:flex;gap:4px;padding:8px 8px 0}
.rail-tab{flex:1;border:1px solid var(--line);background:#fff;border-radius:9px 9px 0 0;padding:7px 4px;
  font-size:.78rem;font-weight:600;color:var(--muted);cursor:pointer;font-family:inherit;transition:.15s}
.rail-tab.active{border-bottom-color:#fff;color:var(--accent,#4caf50);background:#fff;box-shadow:0 -2px 6px rgba(108,92,231,.06)}
.rail-tab .ico{margin-right:4px}

/* ---- Collapsed rail: clean compact design ---- */
.rail-off .slide-rail{padding:8px 6px;align-items:center}
.rail-off .rail-tabs{padding:4px 0 6px;flex-direction:column;gap:4px}
.rail-off .rail-tab{padding:6px 0;font-size:.95rem;border-radius:8px}
.rail-off .rail-tab .ico{margin-right:0;font-size:1.05rem}
.rail-off .rail-tab-label{display:none}
.rail-off .rail-head{margin-bottom:8px;justify-content:center}
.rail-off .rail-head .rail-label{display:none}
.rail-off .rail-head .rail-mini-prog{
  display:inline-grid;place-items:center;width:24px;height:24px;border-radius:50%;
  background:#6c5ce7;color:#fff;font-size:.68rem;font-weight:700;letter-spacing:.3px}
.rail-off .rail-list{align-items:center;gap:5px}
.rail-off .slide-thumb{
  position:relative;width:32px;height:32px;padding:0;border-radius:50%;justify-content:center;
  background:#eef1f7;border-color:#dfe4ef
}
.rail-off .slide-thumb .st-no{
  background:transparent;color:#5a6a85;width:auto;height:auto;font-size:.72rem
}
.rail-off .slide-thumb.cur{
  background:#6c5ce7;border-color:#6c5ce7;box-shadow:0 0 0 3px rgba(108,92,231,.18)
}
.rail-off .slide-thumb.cur .st-no{color:#fff;font-weight:800}
.rail-off .slide-thumb.done{background:#67c23a;border-color:#67c23a;opacity:1}
.rail-off .slide-thumb.done .st-no{color:#fff}
.rail-off .slide-thumb::after{
  /* small dot indicator showing where you are in the lesson, for upcoming slides */
  content:"";position:absolute;left:50%;bottom:-4px;width:4px;height:4px;border-radius:50%;
  background:#c8d0dd;transform:translateX(-50%)
}
.rail-off .slide-thumb.cur::after,.rail-off .slide-thumb.done::after{display:none}
.rail-off .course-mini{padding:6px 0;background:transparent;border-bottom:none}
.rail-off .cm-list{gap:4px;justify-items:center}
.rail-off .cm-item{
  width:32px;height:32px;padding:0;border-radius:50%;justify-content:center;background:#eef1f7;
  border-color:#dfe4ef
}
.rail-off .cm-item .cm-no{background:transparent;color:#5a6a85;width:auto;height:auto;font-size:.72rem}
.rail-off .cm-item.cur{background:#2f9e54;border-color:#2f9e54}
.rail-off .cm-item.cur .cm-no{color:#fff;font-weight:800}

/* ---- Mum's Picks (Discover) ---- */
.mom-picks .card-title{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.mom-picks .card-title h2{margin:0;font-size:1.05rem}
.mompick{position:relative;border-left:3px solid #ff8fb1!important}
.mompick.new{box-shadow:0 0 0 2px rgba(255,143,177,.35),0 4px 14px rgba(255,143,177,.18)}
.mompick .badge.new{background:#ff5c8a;color:#fff}
.mom-url{font-size:.74rem;color:var(--muted);word-break:break-all;opacity:.8}
/* The extracted article: read inside the app, scrollable, with the source link
   deliberately kept at the very bottom of the card. */
.mom-article{max-height:60vh;overflow:auto;text-align:left;line-height:1.65;padding-right:6px}
.mom-article p{margin:0 0 .85em}
.mom-source{margin-top:14px;padding-top:10px;border-top:1px solid rgba(0,0,0,.08);font-size:.78rem;opacity:.85}
.mom-source a{word-break:break-all}
.mom-open{display:inline-block;margin-top:6px;text-decoration:none}

/* ---- Lightbox overlay for photo / video / file ---- */
.overlay{position:fixed;inset:0;background:rgba(20,22,30,.72);display:flex;align-items:center;justify-content:center;z-index:90;padding:18px}
.overlay[hidden]{display:none}
.overlay-card{position:relative;background:#fff;border-radius:16px;padding:18px;max-width:94vw;max-height:92vh;overflow:auto;text-align:center}
.overlay-card h2{margin:0 0 12px;font-size:1rem}
.overlay-close{position:absolute;top:8px;right:10px;border:none;background:#f1f3f6;color:#555;border-radius:50%;width:30px;height:30px;font-size:1rem;cursor:pointer;line-height:1}

/* Lesson progress (RSS-style glowing bar) */
.lesson-progress{height:6px;border-radius:6px;background:#e9edf5;overflow:hidden;margin:10px 12px 6px}
.lesson-progress>i{display:block;height:100%;border-radius:6px;
  background:linear-gradient(90deg,#6c5ce7,#00b8d4);transition:width .45s cubic-bezier(.4,0,.2,1);
  box-shadow:0 0 8px rgba(108,92,231,.5)}

/* Score chip (gamification) */
.score-chip{display:inline-flex;align-items:center;gap:6px;font-size:.78rem;font-weight:700;color:#b8860b;
  background:#fff8ec;border:1px solid #ffe2b8;border-radius:20px;padding:3px 10px;margin:8px 12px}

/* Simulator panel */
.sim{margin:14px 0 4px;border:1px solid #e3e8f0;border-radius:14px;background:linear-gradient(135deg,#fff,#f4f8ff);
  padding:14px 16px}
.sim-head{display:flex;align-items:center;gap:8px;font-weight:700;color:#333;margin-bottom:10px}
.sim-head .ico{font-size:1.2rem}
.sim-row{display:flex;align-items:center;gap:12px;margin:10px 0}
.sim-row label{flex:0 0 120px;font-size:.85rem;color:#444;font-weight:600}
.sim-row input[type=range]{flex:1;accent-color:var(--accent,#4caf50)}
.sim-row .val{flex:0 0 64px;text-align:right;font-variant-numeric:tabular-nums;font-weight:700;color:var(--accent,#4caf50)}
.sim-out{margin-top:10px;padding:10px 12px;border-radius:10px;background:#0f1830;color:#e8eefc;font-size:.95rem;
  line-height:1.6;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;white-space:pre-wrap}
.sim-out b{color:#7ee0a0}

/* Gamified practice */
.quiz-progress{display:flex;gap:5px;justify-content:center;margin:6px 0 12px}
.quiz-dot{width:9px;height:9px;border-radius:50%;background:#e3e8f0;transition:.2s}
.quiz-dot.done{background:#2f9e54}
.quiz-dot.miss{background:#e6a23c}
.quiz-streak{text-align:center;font-weight:800;font-size:1.05rem;color:var(--accent,#4caf50);margin-bottom:4px}
.ex-opt.correct-anim{animation:pop .35s ease}
@keyframes pop{0%{transform:scale(1)}40%{transform:scale(1.04)}100%{transform:scale(1)}}
.confetti{position:fixed;inset:0;pointer-events:none;z-index:9999}
.confetti i{position:absolute;width:9px;height:14px;top:-20px;animation:fall linear forwards}
@keyframes fall{to{transform:translateY(110vh) rotate(540deg);opacity:.2}}
.cm-collapsed .cm-item{padding:4px;justify-content:center}
.cm-collapsed .cm-no{width:24px;height:24px}

/* ---- Course overview page ---- */
.course-view{padding:20px}
.cv-head{display:flex;justify-content:space-between;align-items:flex-start;gap:14px;
  border-bottom:1px solid var(--line);padding-bottom:14px;margin-bottom:14px}
.cv-back{display:inline-block;margin-bottom:4px;color:var(--accent,#4caf50);font-weight:700;
  text-decoration:none;font-size:.9rem}
.cv-back:hover{text-decoration:underline}
.cv-head h2{margin:4px 0 6px;font-size:1.4rem}
.cv-list{display:grid;gap:12px}
.cv-item{display:grid;grid-template-columns:38px 1fr auto;gap:14px;align-items:center;
  border:1px solid var(--line);border-radius:14px;padding:14px 16px;background:#fff}
.cv-no{width:34px;height:34px;border-radius:50%;background:var(--blue2,#eef4ff);color:var(--blue,#2a5bd7);
  font-weight:800;display:grid;place-items:center}
.cv-title{font-weight:700;font-size:1.05rem}
.cv-goal{color:var(--muted);font-size:.88rem;margin-top:2px}
.cv-summary{color:#3a4256;font-size:.92rem;margin-top:6px;line-height:1.6;
  border-left:3px solid var(--accent,#4caf50);padding-left:10px}
.cv-meta{font-size:.78rem;color:var(--muted);margin-top:7px}
.cv-foot{margin-top:16px}

/* ---- 「今天想学什么」对话框（OpenMAIC 风格）---- */
.autoc-hero{display:flex;flex-direction:column;align-items:center;text-align:center;padding:18px 12px 8px}
.autoc-badge{display:inline-flex;align-items:center;gap:6px;background:linear-gradient(135deg,#6c5ce7,#4a3fc4);color:#fff;border-radius:999px;padding:5px 14px;font-size:.8rem;font-weight:700;margin-bottom:12px}
.autoc-hero h2{margin:0 0 6px;font-size:1.5rem}
.autoc-hero .sub{max-width:520px;margin:0 auto 14px}
.autoc-box{display:flex;gap:8px;width:100%;max-width:640px}
.autoc-box input{flex:1;min-width:0;border:2px solid #d6def0;border-radius:14px;padding:13px 16px;font-size:1rem;font-family:inherit;transition:border .15s}
.autoc-box input:focus{outline:none;border-color:#6c5ce7;box-shadow:0 0 0 3px rgba(108,92,231,.12)}
.autoc-box .btn{border-radius:14px;padding:0 22px;font-size:.95rem;white-space:nowrap}
.autoc-chips{display:flex;flex-wrap:wrap;gap:7px;justify-content:center;margin-top:12px}

/* ---- 100 Mini Test（限时整套）---- */
.mini-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  position:sticky;top:0;z-index:20;background:#fff;border:1px solid var(--line);
  border-radius:12px;padding:10px 14px;margin-bottom:12px;box-shadow:0 2px 10px rgba(0,0,0,.05)}
.mini-clock{font-size:1.35rem;font-weight:800;font-variant-numeric:tabular-nums;color:#2a5bd7;
  background:#eef4ff;border-radius:10px;padding:4px 14px;min-width:86px;text-align:center}
.mini-clock.urgent{color:#c0392b;background:#fdeaea;animation:pulse 1s infinite}
@keyframes pulse{50%{opacity:.55}}
.mini-meta{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin-top:4px}
.mini-q legend{font-size:.95rem}

/* ---- AI Teacher Guidance ---- */
/* Key terms the teacher highlights, like a laser pointer on the board. */
mark.hl{background:linear-gradient(transparent 55%,#ffe89a 55%);color:inherit;padding:0 1px;border-radius:2px;font-weight:700}
/* Graded hints that appear on their own when the child stalls. */
.nova-hint{background:linear-gradient(135deg,#f3f0ff,#eef4ff);border-left:3px solid #6c5ce7;
  border-radius:10px;padding:9px 12px;margin-top:9px;font-size:.9rem;line-height:1.55;
  animation:hintIn .3s ease}
.nova-hint b{color:#5a3fc4}
@keyframes hintIn{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
/* "Look at these words first" — shown even when the clue isn't literally in the
   question text, so the guidance always reaches the child. */
.clue-tag{display:flex;flex-wrap:wrap;gap:5px;align-items:center;margin-top:7px;font-size:.8rem;color:var(--muted)}
.clue-tag span{background:#fff8e1;border:1px solid #ffe0a3;color:#8a6100;border-radius:999px;padding:2px 9px;font-weight:700}

/* ---- 掌握度思维导图 ---- */
.kg-wrap{overflow-x:auto;padding:8px 0}
.kg-svg{width:100%;min-width:520px;height:auto;display:block}
.kg-node{cursor:pointer;transition:opacity .15s}
.kg-node:hover rect{stroke:#2a5bd7;stroke-width:2.5}
.kg-node text{pointer-events:none;user-select:none}
.kg-legend{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:10px;font-size:.8rem;color:var(--muted)}
.kg-legend span{display:inline-flex;align-items:center;gap:5px}
.kg-legend i{width:11px;height:11px;border-radius:3px;display:inline-block}
.kg-blocked{color:#c0392b;font-weight:700}
/* Reading passage — the text a comprehension question refers to. */
.passage{background:#fbfcfd;border:1px solid var(--line);border-left:3px solid #6c5ce7;
  border-radius:10px;padding:14px 16px;margin-top:8px;font-size:.97rem;line-height:1.85;max-height:340px;overflow:auto}
.passage p{margin:0 0 10px}
.passage p:last-child{margin-bottom:0}

.kg-detail{margin-top:11px;padding:11px 13px;background:#f7f9fc;border:1px solid var(--line);border-radius:11px;font-size:.88rem;line-height:1.6}
.ach .progress{margin-top:8px}
.nova-hero{display:flex;gap:18px;align-items:center;padding:8px 0}
.nova-avatar{width:86px;height:86px;border-radius:24px;display:grid;place-items:center;font-size:44px;
 background:linear-gradient(145deg,#eaf3ff,#f3edff);border:1px solid var(--line)}
.nova-hero h2{margin:0 0 4px}
.nova-hero .progress{margin:9px 0 6px}
@media(max-width:520px){.nova-hero{flex-direction:column;text-align:center}.ach-grid{grid-template-columns:1fr 1fr}}

/* ---- Growth > NOVA Growth: clean light card (replaces the unreadable wood banner) ---- */
.nova-growth-card{display:flex;gap:16px;align-items:center;padding:14px 16px;border-radius:14px;border:1px solid var(--line,#e6ebf1);background:linear-gradient(135deg,#eef4ff,#f7f1ff);box-shadow:0 4px 14px rgba(30,50,90,.05)}
.ngc-avatar{width:64px;height:64px;flex:none;border-radius:18px;display:grid;place-items:center;font-size:34px;background:linear-gradient(145deg,#eaf3ff,#f3edff);border:1px solid var(--line,#e6ebf1);box-shadow:0 4px 12px rgba(30,50,90,.08)}
.ngc-body{flex:1;min-width:0}
.ngc-body h2{margin:0 0 3px;font-size:18px;font-weight:800;color:#1f2a3d}
.ngc-body .sub{margin:0;color:#52627a;font-size:.9rem}
.ngc-body .progress{height:9px;margin:9px 0 7px;border-radius:99px;overflow:hidden;background:#e2e9f3}
.ngc-body .progress i{border-radius:99px}
.ngc-xp{display:inline-block;padding:3px 10px;border-radius:99px;background:#e9eef7;color:#4a5a75;font-size:.78rem;font-weight:700;border:1px solid #d8e0ed}
@media(max-width:520px){.nova-growth-card{flex-direction:column;text-align:center}}

/* ---- Adaptive placement test ---- */
.diag-subject{cursor:pointer;text-align:center;transition:transform .12s,border-color .12s}
.diag-subject:hover{transform:translateY(-3px);border-color:#246eea}
.diag-q{font-size:19px;line-height:1.5;margin:18px 0 14px}
.diag-choices{display:grid;gap:10px}
.diag-choice{display:flex;gap:11px;align-items:flex-start;text-align:left;
 border:1px solid var(--line);background:#fff;border-radius:13px;padding:13px 15px;
 font-size:15px;cursor:pointer;transition:all .12s}
.diag-choice:hover:not(:disabled){border-color:#246eea;background:#f7faff}
.diag-choice b{color:#246eea;flex:0 0 auto}
.diag-choice.correct{background:#eff9ed;border-color:#8bd272}
.diag-choice.wrong{background:#fff2f2;border-color:#f0b8b8}
.diag-choice:disabled{cursor:default;opacity:.85}
.pomodoro-time{font-size:44px;font-weight:900;color:#246eea;text-align:center;margin:10px 0;font-variant-numeric:tabular-nums}

/* ---- Mastery map (B7) ---- */
.mgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:11px;margin-top:16px}
.mcell{display:flex;flex-direction:column;gap:5px;align-items:flex-start;text-align:left;
 border:1px solid var(--line);border-radius:13px;padding:12px;background:#fff;cursor:pointer;transition:transform .12s}
.mcell:hover{transform:translateY(-2px)}
.mcell b{font-size:14px;line-height:1.3}
.mcell span{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.mcell em{font-size:11px;color:#b8730a;font-style:normal;background:#fff6e5;border-radius:6px;padding:2px 6px}
.mcell.strong{background:#eff9ed;border-color:#bfe3bd}
.mcell.ok{background:#fdfaec;border-color:#ecdfae}
.mcell.weak{background:#fff2f2;border-color:#f0b8b8}
.mcell.untested{opacity:.66}
.legend{display:flex;gap:16px;flex-wrap:wrap;margin-top:14px;font-size:12px;color:var(--muted)}
.legend .sw{display:inline-block;width:13px;height:13px;border-radius:4px;margin-right:5px;vertical-align:-2px;border:1px solid var(--line)}
.legend .sw.strong{background:#eff9ed}.legend .sw.ok{background:#fdfaec}
.legend .sw.weak{background:#fff2f2}.legend .sw.untested{background:#fff;opacity:.6}

/* ---- Interactive classroom: slide rail (left) + content (right) ---- */
.classroom{display:grid;grid-template-columns:230px 1fr;gap:16px;align-items:start}
.classroom.rail-off{grid-template-columns:52px 1fr}
.slide-rail{position:sticky;top:12px;background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:10px;max-height:calc(100vh - 40px);display:flex;flex-direction:column}
.rail-head{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:9px}
.rail-head b{font-size:.85rem}
.rail-toggle{padding:2px 9px;font-size:.82rem}
.rail-list{display:flex;flex-direction:column;gap:6px;overflow:auto;padding-right:2px}
.slide-thumb{display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:10px;
  padding:7px 9px;background:#fff;cursor:pointer;text-align:left;font-family:inherit;transition:.15s;min-width:0}
.slide-thumb:hover{border-color:#9db8f0;background:#f7fafd}
.slide-thumb.cur{border-color:#6c5ce7;background:#f2efff;box-shadow:0 0 0 2px rgba(108,92,231,.14)}
.slide-thumb.done{opacity:.62}
.st-no{flex:0 0 20px;height:20px;border-radius:50%;background:#e7ebf2;color:#5a6a85;
  display:flex;align-items:center;justify-content:center;font-size:.72rem;font-weight:700}
.slide-thumb.cur .st-no{background:#6c5ce7;color:#fff}
.slide-thumb.done .st-no{background:#67c23a;color:#fff}
.st-body{display:flex;align-items:center;gap:6px;min-width:0;flex:1;overflow:hidden}
.st-ico{font-size:.85rem}
.st-t{font-size:.78rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rail-off .slide-thumb{justify-content:center;padding:7px 0}
.rail-off .rail-head{justify-content:center}
.classroom-main{min-width:0}
.nova-actions{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}
@media(max-width:900px){
 .classroom{grid-template-columns:1fr}
 .slide-rail{position:static;max-height:190px}
 .classroom.rail-off{grid-template-columns:1fr}
}
/* ===== XP celebrate burst ===== */
.xp-burst{position:fixed;left:50%;top:38%;transform:translate(-50%,-50%);z-index:9001;font-family:var(--font-display);font-size:clamp(1.4rem,1rem+2vw,2.4rem);font-weight:900;color:#fff;text-shadow:0 2px 0 #2f7d34,0 0 18px rgba(89,184,90,.7);background:linear-gradient(180deg,#5fd06a,#3a9e44);padding:10px 18px;border-radius:14px;box-shadow:0 10px 30px rgba(40,120,50,.4);animation:xp-pop 1.4s var(--ease) forwards;pointer-events:none}
@keyframes xp-pop{0%{opacity:0;transform:translate(-50%,-30%) scale(.7)}20%{opacity:1;transform:translate(-50%,-50%) scale(1.05)}70%{opacity:1;transform:translate(-50%,-54%) scale(1)}100%{opacity:0;transform:translate(-50%,-72%) scale(.96)}}
/* ===== Today's Habits module (in-page card, not floating) ===== */
.section.end-grid .habits-card{margin-top:12px;animation:fade-up .35s var(--ease) both}
.habits-card .habit-row{display:flex;align-items:center;gap:10px;padding:9px 4px;border-bottom:1px solid #eef1f6}
.edutest-divider{margin:16px 0 12px;border:none;border-top:1px solid var(--line,#e6ebf1)}
.edutest-extra-title{font-size:1rem;font-weight:800;margin:0 0 6px}
.habits-card .habit-row:last-child{border-bottom:0}
.habits-card .habit-check{flex:0 0 auto;width:22px;height:22px;border-radius:7px;border:2px solid var(--green);background:#fff;cursor:pointer;display:grid;place-items:center;font-size:13px;color:#fff;transition:background .15s var(--ease)}
.habits-card .habit-row.done .habit-check{background:var(--green)}
.habits-card .habit-row.done .habit-name{text-decoration:line-through;color:var(--muted)}
.habits-card .habit-name{flex:1;font-size:14px}
.habits-card .habit-del{flex:0 0 auto;border:0;background:transparent;color:#c0c8d6;font-size:18px;cursor:pointer;line-height:1;padding:2px 6px;border-radius:8px}
.habits-card .habit-del:hover{color:var(--red);background:#fff0f0}
.habits-card .habits-foot{display:flex;align-items:center;gap:8px;margin-top:10px}
.habits-card .habits-add{display:flex;gap:6px;flex:1}
.habits-card .habits-add input{flex:1;border:1px solid var(--line);border-radius:9px;padding:7px 9px;font:inherit}
.habits-card .habit-edit-btn{border:0;background:#eef3fb;color:#3d6fd0;border-radius:9px;padding:6px 10px;font-weight:700;cursor:pointer}
.habits-progress{height:7px;border-radius:99px;background:#eef1f6;overflow:hidden;margin-top:4px}
.habits-progress i{display:block;height:100%;background:linear-gradient(90deg,#5fd06a,#3a9e44);transition:width .4s var(--ease)}

/* ===== AI Academy: one-click complete course ===== */
.academy-actions{display:flex;align-items:flex-end;gap:10px;flex-wrap:wrap}
.academy-actions .field{flex:1;min-width:160px}
.academy-actions .btn{height:42px;white-space:nowrap}
.academy-actions .btn.primary{background:linear-gradient(135deg,#4d8dff,#6c5ce7);color:#fff;border:0}
.academy-actions .btn.primary:hover{filter:brightness(1.05)}
#academyStatus{margin-top:8px}
.course-stats{display:flex;flex-wrap:wrap;gap:8px;margin:.4rem 0 1rem}
.course-stat{display:inline-flex;align-items:baseline;gap:6px;padding:5px 12px;border-radius:99px;background:var(--blue2,#eaf3ff);color:#2a4a86;font-size:.82rem;font-weight:600}
.course-stat b{font-size:1.05rem;color:#1f3a6e}
.map-box{margin:.6rem 0 1rem;border:1px solid var(--line,#e6ebf1);border-radius:12px;padding:8px 12px;background:#fbfdff}
.map-box summary{cursor:pointer;font-weight:700;color:#34507e}
.course-chapter{padding:16px 18px;margin-bottom:16px}
.chapter-head h3{margin:0 0 6px;font-size:1.1rem;display:flex;align-items:center;gap:10px}
.chapter-idx{display:inline-grid;place-items:center;width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,#4d8dff,#6c5ce7);color:#fff;font-size:.85rem;font-weight:800;flex:0 0 auto}
.chapter-goal{margin:0 0 6px;color:#44607f;font-size:.92rem}
.chapter-tabs{display:flex;gap:6px;margin:12px 0 10px;flex-wrap:wrap}
.chapter-tabs .tab{border:1px solid var(--line,#e6ebf1);background:#fff;color:#3f567a;border-radius:99px;padding:6px 14px;font:inherit;font-size:.85rem;font-weight:600;cursor:pointer;transition:.15s}
.chapter-tabs .tab:hover{border-color:#9db8f0}
.chapter-tabs .tab.active{background:#2f4f86;color:#fff;border-color:#2f4f86}
.tab-panel{animation:fade-up .25s var(--ease) both}
.explanation{padding:8px 0;border-bottom:1px dashed #eef1f6}
.explanation:last-child{border-bottom:0}
.explanation h4{margin:0 0 4px;font-size:1rem;color:#22304a}
.explanation p{margin:.3rem 0;line-height:1.6}
.minecraft-note{background:#eef9ec;border:1px solid #cfefce;border-radius:10px;padding:8px 12px;color:#2c6b2f;font-size:.9rem}
.cited{font-size:.78rem;color:var(--muted,#68738a);margin:.4rem 0 0}
.cited a{color:#3d6fd0}
.mcq{border:1px solid var(--line,#e6ebf1);border-radius:12px;padding:12px 14px;margin:10px 0;background:#fff}
.mcq-q{font-weight:700;margin:0 0 8px}
.mcq-options{display:grid;grid-template-columns:1fr;gap:8px}
.mcq-option{text-align:left;border:1px solid var(--line,#e6ebf1);background:#fbfdff;border-radius:10px;padding:10px 12px;font:inherit;cursor:pointer;transition:.12s}
.mcq-option:hover:not(:disabled){border-color:#9db8f0;background:#f4f8ff}
.mcq-option:disabled{cursor:default}
.mcq-option.correct{background:#e9f8e9;border-color:#8bd272;color:#216b22;font-weight:700}
.mcq-option.wrong{background:#fff1f1;border-color:#f0b8b8;color:#a23333}
.mcq-feedback{margin:10px 0 0;font-size:.9rem;font-weight:600}
.mcq-feedback.good{color:#216b22}
.mcq-feedback.bad{color:#a23333}
.practice{border:1px solid #cfeede;border-radius:12px;padding:12px 14px;background:#f3fbf6}
.practice-title{margin:0 0 6px;font-size:.98rem}
.practice-steps,.practice-mats{margin:.3rem 0 .6rem;padding-left:1.2rem;color:#2f5a3f}
.practice-steps li,.practice-mats li{margin:3px 0}
.course-mini{border:1px solid var(--line,#e6ebf1);border-radius:12px;padding:10px 12px;margin-bottom:8px;background:#fff;cursor:pointer;transition:.15s}
.course-mini:hover{border-color:#9db8f0;background:#f7faff}
.course-mini-title{display:block;font-weight:700;color:#22304a}
/* Parent and child product loops: flat sections, compact actions, clear labels. */
.hub-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0 28px;border-bottom:1px solid #dbe2ce;padding-bottom:12px}.hub-fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px;margin:16px 0}.hub-fields label{display:grid;gap:6px}.hub-check{display:inline-flex;gap:6px;margin:8px}.hub-row{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:16px 0;border-bottom:1px solid #dbe2ce}.reward-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px}.reward-grid article{border-top:3px solid #69864c;padding:12px 0}[data-hub-panel][hidden]{display:none!important}[data-hub-panel] form{max-width:980px}[data-hub-panel] fieldset{border:0;padding:0;margin:12px 0}#hubStatus{position:sticky;bottom:12px;background:#f5f7ed;color:#294932}#arrangementPreview:not(:empty){border-left:3px solid #69864c;padding:16px;margin-top:20px}
[data-hub-panel] h3{margin-top:24px}[data-hub-panel] .ustats{margin-bottom:24px}[data-hub-panel] label>.input{margin-top:6px}.hub-row small{line-height:1.6}.activity-list{display:grid;gap:0;border:1px solid #dbe2ce;border-radius:12px;overflow:hidden}.activity-row{display:flex;justify-content:space-between;gap:18px;padding:13px 15px;background:#fff;border-bottom:1px solid #edf0e7}.activity-row:last-child{border-bottom:0}.activity-row small{display:block;color:#6d7c70;font-size:12px;line-height:1.5}.activity-row>small{max-width:48%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}#hubStatus:empty{display:none}@media(max-width:700px){.hub-row{align-items:flex-start;flex-wrap:wrap}.hub-tabs .btn{padding:10px 12px}.hub-fields{grid-template-columns:1fr}.activity-row{display:block}.activity-row>small{max-width:100%;margin-top:5px}}

/* A quiet password entry, using the existing forest palette. */
.child-login{min-height:100dvh;display:grid;place-items:center;padding:24px;background:#f5f7ed}
.child-login-panel{width:min(100%,420px);color:#213d29}.child-login-brand{font-weight:800;letter-spacing:.1em;color:#456d32}
.child-login-panel h1{font-size:clamp(28px,6vw,36px);line-height:1.2;margin:16px 0}.child-login-panel form{margin:28px 0 18px}
.child-login-panel label{display:block;margin-bottom:8px}.child-login-panel .input{width:100%;box-sizing:border-box}.child-password-toggle{display:flex!important;gap:8px;align-items:center;margin:12px 0 20px;font-size:14px}
.child-login-panel button[type=submit]{width:100%;min-height:48px}.child-login-panel a{color:#365d28;text-decoration:underline}.child-signout{margin:14px 12px;color:inherit}

/* Family project workspace: one shared canvas, quiet creation screens. */
.pbl{max-width:1080px;margin:auto;padding:8px 0 60px}.pbl-header{display:flex;align-items:start;justify-content:space-between;gap:24px;margin:24px 0}.pbl-header h1{margin:0 0 12px;font-size:clamp(28px,4vw,40px);line-height:1.15}.pbl-header p{max-width:65ch;line-height:1.6}.pbl-form{display:grid;gap:18px;max-width:720px;margin:24px 0}.pbl-form label{display:grid;gap:8px}.pbl-form .input{width:100%;box-sizing:border-box}.pbl-form textarea{resize:vertical;min-height:96px}.pbl-form button{justify-self:start}.pbl-project{display:flex;gap:32px;align-items:center;justify-content:space-between;padding:28px 4px;border-bottom:1px solid #d5dfc7;color:inherit;text-decoration:none}.pbl-project:hover h2{text-decoration:underline}.pbl-project h2{margin:8px 0}.pbl-project>span{white-space:nowrap}.pbl-empty{padding:48px 0;max-width:65ch}.pbl-stages{display:flex;flex-wrap:wrap;gap:12px 24px;padding:16px 0;border-block:1px solid #d5dfc7}.pbl-stages span{color:#54634b}.pbl-stages [aria-current]{font-weight:750;color:#2e5023;text-decoration:underline;text-underline-offset:6px}.pbl-next{padding:24px 0 32px}.pbl-next h2{margin-top:0}.pbl-section{padding:24px 0;border-top:1px solid #d5dfc7}.pbl-plan,.pbl-finish{margin:20px 0;padding:18px 0}.pbl-task{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding:18px 0;border-bottom:1px solid #e0e6d7}.pbl-task p{margin:6px 0}.pbl-task-review{width:100%;display:block;padding:8px 0}.pbl-task-review label{display:block}.pbl-task-review textarea{display:block;width:100%;max-width:650px;margin:8px 0}.pbl-entry{padding:24px 0;border-bottom:1px solid #e0e6d7;overflow-wrap:anywhere}.pbl-entry header>span{font-size:13px;color:#56634d}.pbl-entry h3{margin:8px 0 16px}.pbl-text{white-space:pre-wrap;max-width:70ch;line-height:1.65;overflow-wrap:anywhere}.pbl-entry audio,.pbl-entry video{max-width:100%;width:100%}.pbl-entry video{max-height:480px}.pbl-image{max-height:420px;max-width:100%;object-fit:contain}.pbl-showcase{padding:28px;background:#f0f4e5;border-radius:16px;margin:24px 0}.pbl-compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin:20px 0}.pbl-compare>div{min-width:0}.pbl-compare select{width:100%}.pbl-comment{padding:16px 0}.pbl-comment p{margin:6px 0}.pbl-record{padding:8px 0}.pbl-record audio{display:block;max-width:100%;margin-top:12px}.pbl-record audio[hidden]{display:none}.pbl-home{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 0;margin:20px 0;border-block:1px solid #d5dfc7}.pbl-home h2{margin:6px 0}.pbl-home p{margin:4px 0}.pbl-work{max-width:800px}.pbl-source{font-size:14px;color:#526447}
@media(max-width:640px){.pbl-header,.pbl-project,.pbl-home{flex-direction:column;align-items:stretch;gap:14px}.pbl-compare{grid-template-columns:1fr}.pbl-showcase{padding:18px}.pbl-stages{font-size:13px;gap:12px}.pbl-project>span{white-space:normal}}

.tutor-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px}.tutor-chat-controls{display:flex;gap:10px;flex-wrap:wrap;margin:12px 0}.tutor-history-panel{max-height:50dvh;overflow:auto}.tutor-history-entry{display:block;width:100%;text-align:left;background:transparent;color:inherit;border:0;border-bottom:1px solid #d5dfc7;padding:14px 4px;cursor:pointer}.tutor-history-entry:hover{background:#eff4e8}.tutor-history-entry strong,.tutor-history-entry small{display:block;overflow-wrap:anywhere}.tutor-history-entry small{margin-top:6px;color:#526047}.tutor-welcome{padding:18px 0;line-height:1.6}.tutor-body [hidden]{display:none!important}

.pbl-form .pbl-field-help{font-size:14px;line-height:1.6;color:#526047;margin:-10px 0 4px;max-width:65ch}.pbl-examples{margin:-4px 0 8px}.pbl-examples li{margin:8px 0;line-height:1.5}
.xp-rule-list label{display:grid;gap:3px;min-width:0;flex:1}.xp-rule-list label small{color:var(--muted);line-height:1.4}.xp-rule-key{font-size:11px;color:var(--muted);letter-spacing:.04em}.xp-rule-list .xp-rule-input{max-width:140px}
.tutor-parent-conversations{display:grid;gap:8px;max-width:900px}.tutor-parent-conversation{width:100%;text-align:left;background:#fff;color:var(--ink);border:1px solid var(--line);cursor:pointer}.tutor-parent-conversation small{display:block;color:var(--muted);margin-top:4px}.tutor-parent-transcript{max-width:900px;margin-top:18px}.tutor-parent-turn{padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:#fff;margin:8px 0}.tutor-parent-turn p{margin:0 0 8px;line-height:1.55}.tutor-parent-turn p:last-child{margin-bottom:0}