:root{--paper: #fbf8f1;--paper-2: #f3eee2;--card: #ffffff;--line: #e7e2d6;--line-2: #d8d1c2;--ink: #1f2f42;--ink-2: #4a5d70;--muted: #7f8c99;--coral: #f26b4e;--coral-deep: #d5533a;--coral-soft: #ffe7df;--teal: #2a9d8f;--teal-deep: #1f7f74;--teal-soft: #d8f0ea;--sun: #f8c94a;--sun-deep: #d9a521;--sun-soft: #fff1c2;--blue: #3f7fbf;--blue-soft: #dcefff;--green: #3fa877;--green-soft: #d9f2e3;--lilac: #8b7fd1;--lilac-soft: #e8e4f8;--shadow: 0 10px 30px rgba(31, 47, 66, .08);--shadow-2: 0 2px 6px rgba(31, 47, 66, .06);--radius: 18px;--radius-sm: 12px;--display: "Fredoka", "Nunito", system-ui, sans-serif;--body: "Nunito", system-ui, -apple-system, "Segoe UI", sans-serif;font-family:var(--body);color:var(--ink);background:var(--paper);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;color-scheme:light}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}button,input,select,textarea{font:inherit}h1,h2,h3{font-family:var(--display);font-weight:600;letter-spacing:-.01em;text-wrap:balance}:focus-visible{outline:3px solid var(--sun);outline-offset:2px;border-radius:6px}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}#root{min-height:100vh}.eyebrow{margin:0 0 8px;color:var(--coral);font-family:var(--body);font-size:11px;font-weight:800;letter-spacing:.14em;text-transform:uppercase}.intro{margin:14px 0 0;max-width:46ch;color:var(--ink-2);font-size:16px;line-height:1.55}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:16px}.section-heading h2,.track-heading h2,.map-heading h2,.leaderboard-heading h2,.practice-card h2,.student-detail h2{margin:0;color:var(--ink);font-size:26px}.section-heading>svg{color:var(--sun-deep)}.text-button{display:inline-flex;align-items:center;gap:4px;border:0;padding:6px 2px;color:var(--coral-deep);background:transparent;cursor:pointer;font-size:14px;font-weight:800}.text-button:hover{color:var(--coral)}.primary-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 20px;border:0;border-radius:14px;color:#fff;background:var(--coral);box-shadow:0 4px 0 var(--coral-deep);cursor:pointer;font-family:var(--display);font-size:16px;font-weight:600;letter-spacing:.01em;transition:transform .12s ease,box-shadow .12s ease}.primary-button:hover{transform:translateY(-1px)}.primary-button:active{transform:translateY(2px);box-shadow:0 2px 0 var(--coral-deep)}.primary-button:disabled{opacity:.6;cursor:wait}.loading-session{color:var(--ink-2);font-family:var(--display);font-size:22px}.login-page{position:relative;display:grid;min-height:100vh;place-items:center;overflow:hidden;padding:24px;background:radial-gradient(ellipse at 15% 20%,#ffe7df 0,transparent 45%),radial-gradient(ellipse at 85% 80%,#d8f0ea 0,transparent 45%),var(--paper)}.login-notes{position:absolute;top:8%;left:6%;color:var(--coral);opacity:.12;font-family:var(--display);font-size:110px;transform:rotate(-12deg)}.login-card{position:relative;display:grid;width:min(100%,420px);gap:12px;padding:36px;border:1px solid var(--line);border-radius:24px;background:var(--card);box-shadow:var(--shadow)}.login-brand{display:flex;align-items:center;gap:10px;margin-bottom:10px;color:var(--ink);font-family:var(--display);font-size:28px;font-weight:600}.login-brand span,.brand-mark{display:grid;width:38px;height:38px;place-items:center;border-radius:12px 12px 12px 3px;color:#fff;background:var(--coral)}.login-card h1{margin:0;color:var(--ink);font-size:40px;line-height:1.02}.login-card>p:not(.eyebrow){margin:2px 0 10px;color:var(--ink-2);font-size:15px}.login-card label{display:grid;gap:6px;color:var(--ink-2);font-size:12px;font-weight:800;letter-spacing:.04em;text-transform:uppercase}.login-card input{border:1.5px solid var(--line-2);border-radius:12px;padding:12px 14px;color:var(--ink);background:#fff;font-size:15px}.login-card input:focus{border-color:var(--teal);outline:none;box-shadow:0 0 0 4px var(--teal-soft)}.login-card>button{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:8px;border:0;border-radius:14px;padding:14px;color:#fff;background:var(--ink);cursor:pointer;font-family:var(--display);font-size:16px;font-weight:600}.login-card>button:hover{background:#2b415a}.login-card>button:disabled{opacity:.65;cursor:wait}.login-error{color:var(--coral-deep);font-size:13px;font-weight:700}.demo-accounts{display:grid;gap:4px;margin-top:12px;padding-top:14px;border-top:1px dashed var(--line-2);color:var(--muted);font-size:12px}.demo-accounts strong{color:var(--ink-2)}.mascot-scene{position:relative;width:220px;min-width:220px;min-height:190px;overflow:hidden;border:1px solid #cfe9df;border-radius:20px;background:linear-gradient(180deg,#e2f4fb 0,#dff3ea)}.scene-sun{position:absolute;top:18px;right:30px;width:34px;height:34px;border-radius:50%;background:var(--sun);box-shadow:0 0 0 8px #f8c94a40}.scene-hill{position:absolute;bottom:-57px;border-radius:50% 50% 0 0}.hill-back{left:-20px;width:180px;height:120px;background:#b7e5c9}.hill-front{right:-37px;width:205px;height:105px;background:#85cfac}.mascot{position:absolute;z-index:2;bottom:19px;left:68px;width:85px;height:109px}.mascot-face{position:absolute;top:0;left:12px;width:62px;height:59px;border-radius:45% 45% 42% 42%;background:#f5a267}.mascot-ear{position:absolute;top:3px;width:25px;height:27px;border-radius:62% 35% 58% 38%;background:#e58456}.mascot-ear.left{left:3px;transform:rotate(-23deg)}.mascot-ear.right{right:3px;transform:scaleX(-1) rotate(-23deg)}.mascot-eye{position:absolute;top:25px;width:6px;height:8px;border-radius:50%;background:#344455;animation:blink 5s infinite}.mascot-eye.left{left:19px}.mascot-eye.right{right:19px}.mascot-smile{position:absolute;left:25px;bottom:12px;width:13px;height:7px;border-bottom:2px solid #344455;border-radius:0 0 12px 12px}.mascot-body{position:absolute;z-index:1;bottom:0;left:9px;width:68px;height:61px;border-radius:48% 48% 28% 28%;background:#2f5470}.mascot-badge{position:absolute;top:15px;left:25px;display:grid;width:22px;height:22px;place-items:center;border-radius:50%;color:#2f5470;background:var(--sun)}.mascot-arm{position:absolute;z-index:0;bottom:29px;width:16px;height:38px;border-radius:10px;background:#f5a267}.arm-left{left:2px;transform:rotate(26deg)}.arm-right{right:2px;transform:rotate(-26deg)}.floating-note{position:absolute;z-index:3;display:grid;place-items:center;color:var(--coral);font-family:var(--display);font-size:24px;font-weight:700;animation:bob 2.7s ease-in-out infinite}.note-one{top:29px;left:26px}.note-two{top:48px;right:46px;color:var(--teal-deep);animation-delay:.45s}.note-three{top:83px;left:43px;color:var(--sun-deep);animation-delay:.9s}.mascot-bubble{position:absolute;z-index:4;top:14px;left:67px;display:grid;gap:2px;width:132px;padding:10px 12px;border-radius:12px 12px 12px 3px;color:var(--ink);background:#fff;box-shadow:var(--shadow-2);font-size:12px}.mascot-bubble strong{font-size:12px}.mascot-bubble span{color:var(--muted);font-size:11px}.mascot-scene.compact{width:125px;min-width:125px;min-height:129px}.compact .mascot{bottom:8px;left:21px;transform:scale(.8);transform-origin:bottom center}.compact .scene-sun{top:12px;right:14px;transform:scale(.72)}.compact .note-one{top:18px;left:13px;transform:scale(.75)}.compact .note-two{top:34px;right:26px;transform:scale(.72)}.compact .note-three{display:none}.compact .hill-back{left:-60px}.compact .hill-front{right:-80px}@keyframes bob{0%,to{transform:translateY(0) rotate(-4deg)}50%{transform:translateY(-7px) rotate(4deg)}}@keyframes blink{0%,92%,to{transform:scaleY(1)}95%{transform:scaleY(.1)}}@keyframes appear{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.app-shell{position:relative;display:flex;min-height:100vh;background:var(--paper)}.music-sky{position:fixed;z-index:0;top:0;right:0;bottom:0;left:0;overflow:hidden;pointer-events:none}.sky-note{position:absolute;top:-12%;color:var(--coral);opacity:.09;font-family:var(--display);font-size:34px;font-weight:700;animation:noteFall linear infinite}.sky-note-1{left:27%;animation-duration:22s}.sky-note-2{left:42%;color:var(--teal);animation-duration:26s;animation-delay:-8s}.sky-note-3{left:63%;color:var(--sun-deep);font-size:27px;animation-duration:24s;animation-delay:-12s}.sky-note-4{left:78%;color:var(--blue);animation-duration:30s;animation-delay:-3s}.sky-note-5{left:91%;color:var(--lilac);animation-duration:27s;animation-delay:-16s}.sky-note-6{left:35%;color:var(--sun-deep);animation-duration:32s;animation-delay:-18s}.sky-note-7{left:55%;animation-duration:28s;animation-delay:-6s}.sky-note-8{left:85%;color:var(--teal);animation-duration:23s;animation-delay:-10s}.sky-note-9{left:16%;color:var(--blue);animation-duration:31s;animation-delay:-20s}@keyframes noteFall{0%{transform:translate3d(0,-15vh,0) rotate(-10deg)}50%{transform:translate3d(32px,55vh,0) rotate(14deg)}to{transform:translate3d(-21px,120vh,0) rotate(-8deg)}}.sidebar,.content{position:relative;z-index:1}.sidebar{position:sticky;top:0;width:250px;height:100vh;padding:28px 16px 18px;display:flex;flex-direction:column;border-right:1px solid var(--line);background:#ffffffd9;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.brand{display:flex;align-items:center;gap:10px;padding:0 12px;color:var(--ink);font-family:var(--display);font-size:28px;font-weight:600}.main-nav{display:grid;gap:6px;margin-top:44px}.nav-item{width:100%;display:flex;align-items:center;gap:14px;border:0;border-radius:14px;padding:12px 14px;color:var(--ink-2);background:transparent;text-align:left;cursor:pointer;font-size:15px;font-weight:800;transition:background .15s ease,color .15s ease}.nav-item:hover{background:var(--paper-2);color:var(--ink)}.nav-item.active{color:var(--ink);background:var(--teal-soft)}.nav-item.active svg{color:var(--teal-deep)}.sidebar-bottom{margin-top:auto;display:grid;gap:4px}.profile-card{display:flex;align-items:center;gap:10px;margin-top:14px;padding:14px 10px 4px;border:0;border-top:1px solid var(--line);background:transparent;cursor:pointer;text-align:left;font-size:13px}.profile-card>div:nth-child(2){display:grid;gap:2px;flex:1}.profile-card strong{color:var(--ink)}.profile-card span{color:var(--muted);font-size:12px}.profile-card>svg{color:var(--muted)}.avatar{width:34px;height:34px;display:grid;place-items:center;border-radius:50%;color:#fff;background:var(--ink);font-family:var(--display);font-size:12px;font-weight:600}.content{flex:1;min-width:0}.topbar{position:sticky;top:0;z-index:5;height:74px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 clamp(20px,6%,64px);border-bottom:1px solid var(--line);background:#fbf8f1db;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.breadcrumb{color:var(--muted);font-size:14px}.breadcrumb span:first-child{color:var(--ink);font-weight:800}.dot{margin:0 7px}.header-actions,.streak{display:flex;align-items:center;gap:16px}.streak{gap:6px;padding:6px 12px;border-radius:100px;color:var(--coral-deep);background:var(--coral-soft);font-family:var(--display);font-size:15px;font-weight:600}.icon-button,.logout-icon{display:grid;place-items:center;width:38px;height:38px;border:0;border-radius:12px;color:var(--ink-2);background:transparent;cursor:pointer}.icon-button:hover,.logout-icon:hover{background:var(--paper-2);color:var(--ink)}.page-content{max-width:1040px;padding:44px clamp(20px,6%,64px) 72px}.welcome-row{display:flex;justify-content:space-between;align-items:center;gap:32px}.welcome-row h1,.track-hero h1,.class-hero h1,.profile-hero h1,.instructor-welcome h1,.assessment-hero h1,.builder-heading h1,.lesson-card h1,.result-page h1{margin:0;color:var(--ink);font-size:44px;line-height:1.02}.illustrated-welcome{position:relative;align-items:stretch}.illustrated-welcome>div:first-child{padding-top:10px}.guide-wrap{position:relative}.rename-guide{position:absolute;z-index:6;right:8px;bottom:8px;display:flex;align-items:center;gap:5px;padding:7px 10px;border:0;border-radius:100px;color:var(--ink);background:#ffffffeb;box-shadow:var(--shadow-2);cursor:pointer;font-size:11px;font-weight:800}.guide-name-form{position:absolute;z-index:8;right:6px;bottom:44px;display:flex;gap:4px;padding:6px;border-radius:12px;background:#fff;box-shadow:var(--shadow)}.guide-name-form input{width:100px;border:1px solid var(--line-2);border-radius:8px;padding:6px 8px;color:var(--ink);font-size:12px}.guide-name-form button{border:0;border-radius:8px;padding:6px 9px;color:#fff;background:var(--coral);cursor:pointer;font-size:11px;font-weight:800}.weekly-progress{min-width:240px;padding:20px 22px;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);box-shadow:var(--shadow-2)}.weekly-title{display:flex;justify-content:space-between;align-items:baseline;color:var(--ink-2);font-size:13px;font-weight:700}.weekly-title strong{color:var(--ink);font-family:var(--display);font-size:18px}.week-dots{display:flex;justify-content:space-between;margin:16px 0 10px}.week-dots span{width:34px;height:34px;display:grid;place-items:center;border-radius:50%;color:var(--muted);background:var(--paper-2);font-size:12px;font-weight:800}.week-dots .done{color:#fff;background:var(--teal);box-shadow:0 3px 0 var(--teal-deep)}.weekly-progress small{color:var(--muted);font-size:12px}.continue-card{display:flex;align-items:center;gap:20px;margin-top:40px;padding:26px 28px;border-radius:var(--radius);color:#fff;background:linear-gradient(120deg,#1f2f42 0,#2f5470);box-shadow:0 16px 34px #1f2f4238}.lesson-icon{width:56px;height:56px;display:grid;place-items:center;color:var(--sun);border-radius:16px;background:#ffffff1a}.lesson-copy{flex:1}.continue-card .eyebrow{color:var(--sun);margin-bottom:4px}.continue-card h2{margin:0;color:#fff;font-size:22px}.continue-card p:not(.eyebrow){margin:6px 0 0;color:#c8d5de;font-size:14px}.continue-card .primary-button{color:var(--ink);background:var(--sun);box-shadow:0 4px 0 var(--sun-deep)}.practice-card{margin-top:22px;padding:24px 28px;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);box-shadow:var(--shadow-2)}.practice-heading{display:flex;align-items:center;gap:14px}.practice-number{width:32px;height:32px;display:grid;place-items:center;border-radius:50%;color:#fff;background:var(--coral);font-family:var(--display);font-size:14px;font-weight:600}.practice-card .eyebrow{margin-bottom:4px}.answer-options{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:18px}.answer{display:grid;gap:4px;padding:14px;border:2px solid var(--line);border-radius:14px;color:var(--ink);background:#fff;cursor:pointer;text-align:left}.answer span{color:var(--muted);font-size:12px}.answer:hover,.answer.selected{border-color:var(--coral);background:var(--coral-soft)}.answer-feedback{margin:14px 0 0;font-size:14px;font-weight:800}.correct{color:var(--green)}.retry{color:var(--coral-deep)}.progress-section{margin-top:44px}.module-list{display:grid;gap:12px;margin-top:18px}.module{display:flex;align-items:center;gap:16px;padding:16px 18px;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);box-shadow:var(--shadow-2)}.module-icon{width:46px;height:46px;display:grid;place-items:center;border-radius:14px}.module-icon.blue{color:var(--blue);background:var(--blue-soft)}.module-icon.coral{color:var(--coral-deep);background:var(--coral-soft)}.module-icon.yellow{color:var(--sun-deep);background:var(--sun-soft)}.module-icon.green{color:var(--green);background:var(--green-soft)}.module-icon.purple{color:var(--lilac);background:var(--lilac-soft)}.module-info{flex:1;min-width:0}.module-title{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.module h3{margin:0;color:var(--ink);font-size:17px}.module-title span{padding:2px 8px;border-radius:100px;color:var(--coral-deep);background:var(--coral-soft);font-size:11px;font-weight:800}.module-title span.complete{color:var(--green);background:var(--green-soft)}.module p{margin:4px 0 10px;color:var(--muted);font-size:13px}.progress-track{height:8px;overflow:hidden;border-radius:8px;background:var(--paper-2)}.progress-track span{display:block;height:100%;border-radius:inherit;background:var(--coral)}.module:first-child .progress-track span{background:var(--green)}.module-arrow{color:var(--muted)}.tip-banner{display:flex;align-items:center;gap:12px;margin-top:28px;padding:16px 18px;color:var(--ink-2);border-radius:var(--radius-sm);background:var(--sun-soft)}.tip-banner svg{color:var(--sun-deep);flex-shrink:0}.tip-banner p{margin:0;font-size:14px}.tip-banner strong{color:var(--ink)}.student-track{animation:appear .24s ease-out}.track-hero{display:flex;align-items:center;justify-content:space-between;gap:32px;padding-bottom:36px;border-bottom:1px solid var(--line)}.track-summary{width:240px;padding:20px;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);box-shadow:var(--shadow-2)}.track-summary>span{color:var(--ink-2);font-size:12px;font-weight:800;letter-spacing:.06em;text-transform:uppercase}.track-summary strong{display:block;margin:4px 0 10px;color:var(--ink);font-family:var(--display);font-size:36px;font-weight:600}.large-progress{height:10px;overflow:hidden;border-radius:8px;background:var(--paper-2)}.large-progress span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--coral),var(--sun));transition:width .6s ease}.track-summary small{display:block;margin-top:9px;color:var(--muted);font-size:12px}.track-heading{display:flex;align-items:end;justify-content:space-between;margin-top:44px}.track-heading>span{color:var(--muted);font-size:13px;font-weight:700}.path-modules{display:grid;gap:12px;margin-top:18px}.path-module{overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);box-shadow:var(--shadow-2)}.module-toggle{width:100%;display:flex;align-items:center;gap:16px;padding:18px 20px;border:0;color:var(--ink);background:#fff;cursor:pointer;text-align:left}.module-toggle>svg{margin-left:auto;color:var(--muted);transition:transform .18s ease}.expanded .module-toggle>svg{transform:rotate(90deg)}.path-number{width:44px;height:44px;display:grid;flex:0 0 44px;place-items:center;border-radius:14px;color:var(--coral-deep);background:var(--coral-soft);font-family:var(--display);font-size:15px;font-weight:600}.path-number.finished{color:var(--green);background:var(--green-soft)}.path-module-copy{display:grid;gap:3px;min-width:0}.path-module-copy strong{font-size:16px}.path-module-copy small{color:var(--muted);font-size:13px}.module-progress-label{color:var(--coral-deep);font-size:12px;font-weight:800}.path-lessons{padding:0 20px 14px 80px}.path-lesson{width:100%;display:flex;align-items:center;gap:10px;min-height:48px;padding:9px 2px;border:0;border-top:1px solid var(--line);color:var(--ink-2);background:#fff;cursor:pointer;font-size:14px;text-align:left}.lesson-state{width:26px;height:26px;display:grid;flex:0 0 26px;place-items:center;border:1.5px solid var(--line-2);border-radius:50%;color:var(--muted);font-size:11px;font-weight:800}.path-lesson.complete .lesson-state{border-color:var(--green);color:#fff;background:var(--green)}.path-lesson.current .lesson-state{border-color:var(--coral);color:#fff;background:var(--coral)}.path-lesson.locked{color:var(--muted);cursor:not-allowed}.path-lesson.locked .lesson-state{color:#b1bbc0;background:var(--paper-2)}.path-lesson small{display:flex;align-items:center;gap:4px;margin-left:auto;color:var(--muted);font-size:12px}.start-label{display:flex;align-items:center;gap:4px;margin-left:10px;color:var(--coral-deep);font-size:12px;font-weight:800}.path-lesson.current{color:var(--ink);font-weight:800}.trail{margin-top:32px;padding:24px;border:1px solid #cfe6de;border-radius:24px;background:linear-gradient(180deg,#eaf7fb 0,#e6f5ee);box-shadow:var(--shadow-2)}.trail-head{display:flex;align-items:center;justify-content:space-between;gap:20px}.trail-head h2{margin:0;color:var(--ink);font-size:28px}.trail-sub{margin:6px 0 0;color:var(--ink-2);font-size:14px;max-width:46ch}.trail-ring{position:relative;display:grid;place-items:center;width:96px;height:96px;flex-shrink:0}.trail-ring svg{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%}.trail-ring strong{color:var(--ink);font-family:var(--display);font-size:22px;font-weight:600;line-height:1}.trail-ring strong small{font-size:13px;color:var(--muted)}.trail-ring span{margin-top:32px;position:absolute;font-size:10px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.trail-legend{display:flex;flex-wrap:wrap;gap:14px;margin:14px 0 12px;color:var(--ink-2);font-size:12px;font-weight:700}.trail-legend span{display:inline-flex;align-items:center;gap:6px}.trail-legend i{width:12px;height:12px;border-radius:50%}.trail-legend i.done{background:var(--green)}.trail-legend i.current{background:var(--coral);box-shadow:0 0 0 3px var(--coral-soft)}.trail-legend i.locked{background:#c9cfd3}.trail-land{position:relative;overflow:hidden;border-radius:20px;background:#f6f9f4;border:1px solid #d9ebe2}.trail-cloud{position:absolute;z-index:1;width:64px;height:16px;border-radius:20px;background:#ffffffe6;animation:drift 30s linear infinite}.trail-cloud:before,.trail-cloud:after{position:absolute;bottom:0;border-radius:50%;background:inherit;content:""}.trail-cloud:before{left:12px;width:28px;height:28px}.trail-cloud:after{right:6px;width:20px;height:20px}.trail-cloud.c1{top:18px;left:8%}.trail-cloud.c2{top:46px;right:10%;transform:scale(.75);animation-duration:38s}.trail-cloud.c3{top:300px;left:4%;transform:scale(.6);animation-duration:44s}@keyframes drift{0%{translate:0 0}50%{translate:18px 0}to{translate:0 0}}.trail-band{position:absolute;left:0;right:0;border-radius:40px 40px 0 0}.trail-band:after{position:absolute;left:0;right:0;bottom:0;height:16px;background:linear-gradient(0deg,rgba(0,0,0,.03),transparent);content:""}.trail-signpost{position:absolute;top:18px;left:50%;z-index:2;display:flex;align-items:center;gap:10px;padding:8px 14px 8px 8px;border-radius:100px;background:#fff;box-shadow:var(--shadow-2);transform:translate(-50%);white-space:nowrap}.sp-num{display:grid;width:30px;height:30px;place-items:center;border-radius:50%;color:#fff;background:var(--deep);font-family:var(--display);font-size:13px;font-weight:600}.sp-copy{display:grid;gap:1px}.sp-copy strong{color:var(--ink);font-size:14px}.sp-copy small{color:var(--muted);font-size:11px;font-weight:700}.sp-star{color:var(--sun-deep)}.trail-road{position:absolute;top:0;right:0;bottom:0;left:0;z-index:2;width:100%;height:100%}.trail-stop{position:absolute;z-index:3;display:grid;justify-items:center;gap:6px;width:150px;margin-left:-75px;margin-top:-32px;border:0;background:transparent;color:var(--ink);cursor:pointer;text-align:center}.stop-circle{display:grid;place-items:center;width:64px;height:64px;border:4px solid #fff;border-radius:50%;color:#fff;background:#c9cfd3;box-shadow:0 5px #a9b1b7,0 8px 18px #1f2f4226;transition:transform .15s ease}.trail-stop:hover 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16px;background:var(--sun-soft)}.podium:before{position:absolute;right:12px;bottom:0;left:12px;height:50px;border-radius:12px 12px 0 0;background:#ecc55f;content:""}.podium-person{position:relative;z-index:1;display:grid;place-items:center;width:62px;border-radius:30px 30px 0 0;color:#fff;font-size:12px;font-weight:800}.podium-person span{display:grid;width:40px;height:40px;place-items:center;margin-top:-22px;border:3px solid #fff;border-radius:50%}.podium-person strong{margin:8px 0;font-family:var(--display);font-size:16px}.podium-person.first{height:108px;background:var(--coral)}.podium-person.second{height:82px;background:var(--lilac)}.podium-person.third{height:62px;background:var(--green)}.podium-star{position:absolute;z-index:3;top:12px;color:var(--sun-deep);animation:bob 2s ease-in-out infinite}.leaderboard-card{margin-top:26px;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);box-shadow:var(--shadow-2)}.leaderboard-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px 22px;border-bottom:1px solid var(--line)}.leaderboard-heading h2{font-size:22px;margin-bottom:4px}.leaderboard-heading span{color:var(--muted);font-size:13px}.leaderboard-heading p{display:flex;align-items:center;gap:6px;margin:0;color:var(--coral-deep);font-size:13px;font-weight:800}.ranking-row{display:flex;align-items:center;gap:14px;padding:12px 22px;border-bottom:1px solid var(--line)}.ranking-row:last-child{border:0}.ranking-row.current-student{background:var(--sun-soft)}.rank{width:26px;color:var(--muted);font-family:var(--display);font-size:15px}.current-student .rank{color:var(--coral-deep)}.rank-avatar{display:grid;width:34px;height:34px;flex-shrink:0;place-items:center;border-radius:50%;color:#fff;font-size:11px;font-weight:800}.rank-avatar.purple{background:var(--lilac)}.rank-avatar.yellow{background:var(--sun-deep)}.rank-avatar.coral{background:var(--coral)}.rank-avatar.blue{background:var(--blue)}.rank-avatar.green{background:var(--green)}.student-name{display:flex;flex:1;align-items:center;gap:8px;color:var(--ink);font-size:14px;font-weight:800}.student-name small{padding:3px 7px;border-radius:6px;color:var(--coral-deep);background:var(--coral-soft);font-size:10px}.level-status{display:grid;gap:4px;width:80px;color:var(--ink-2);font-size:11px}.level-status strong{font-size:11px}.level-track{display:block;height:5px;overflow:hidden;border-radius:5px;background:var(--paper-2)}.level-track i{display:block;height:100%;border-radius:inherit;background:var(--sun-deep)}.points{color:var(--ink);font-family:var(--display);font-size:16px}.points small{color:var(--muted);font-family:var(--body);font-size:11px;font-weight:700}.competition-note{margin:14px 0 0;color:var(--muted);text-align:center;font-size:12px}.lesson-page{animation:appear .22s ease-out}.lesson-top{display:flex;align-items:center;gap:18px}.lesson-top>button{display:flex;align-items:center;gap:6px;border:0;color:var(--ink-2);background:transparent;cursor:pointer;font-size:13px;font-weight:800}.lesson-meter{flex:1;height:10px;overflow:hidden;border-radius:10px;background:var(--paper-2)}.lesson-meter span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--teal),var(--green));transition:width .4s ease}.lesson-top>strong{color:var(--ink-2);font-family:var(--display);font-size:14px}.lesson-stage{display:flex;align-items:flex-start;justify-content:center;gap:32px;min-height:560px;padding-top:28px}.lesson-guide{position:sticky;top:100px}.lesson-guide .mascot-scene{width:160px;min-width:160px;min-height:165px}.lesson-card{width:min(100%,580px);padding:32px 36px;border:1px solid var(--line);border-radius:24px;background:var(--card);box-shadow:var(--shadow)}.lesson-card h1{font-size:36px}.lesson-description{margin:10px 0 0;color:var(--ink-2);font-size:15px;line-height:1.5}.lesson-type{display:inline-flex;align-items:center;gap:6px;margin-bottom:8px;padding:5px 10px;border-radius:100px;background:var(--teal-soft);color:var(--teal-deep);font-size:11px;font-weight:800;letter-spacing:.06em;text-transform:uppercase}.listen-button{display:inline-flex;align-items:center;gap:10px;margin:16px 0 6px;padding:12px 16px;border:2px solid var(--teal-soft);border-radius:100px;color:var(--teal-deep);background:#fff;cursor:pointer;font-size:14px;font-weight:800;transition:background .15s ease}.listen-button:hover{background:var(--teal-soft)}.listen-button.playing{border-color:var(--teal);background:var(--teal-soft)}.wave{display:inline-flex;align-items:center;gap:2px;height:16px}.wave i{display:block;width:3px;height:4px;border-radius:2px;background:var(--teal)}.playing .wave i{animation:wave .7s ease-in-out infinite}.wave i:nth-child(2){animation-delay:.1s}.wave i:nth-child(3){animation-delay:.2s}.wave i:nth-child(4){animation-delay:.3s}.wave i:nth-child(5){animation-delay:.15s}@keyframes wave{0%,to{height:4px}50%{height:16px}}.beat-line{display:flex;justify-content:space-between;align-items:center;height:34px;margin:14px 0 20px;border-bottom:2px solid var(--line-2)}.beat-line span{display:grid;place-items:center;width:26px;height:26px;margin-bottom:-14px;border:3px solid #fff;border-radius:50%;background:var(--paper-2);color:var(--muted);font-size:11px;font-weight:800;box-shadow:0 1px 4px #1f2f4226}.beat-line span.on{background:var(--coral);color:#fff}.playing 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div{display:grid;grid-template-columns:64px 1fr auto;gap:10px;align-items:center;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--card);font-size:13px}.history-list span{color:var(--muted);font-weight:700}.history-list strong{color:var(--ink)}.history-list small{color:var(--green);font-weight:800}.logout-button{display:flex;align-items:center;gap:6px;margin:30px 0 0 auto;border:1px solid var(--line-2);border-radius:10px;padding:9px 12px;color:var(--coral-deep);background:#fff;cursor:pointer;font-size:12px;font-weight:800}.result-page{display:grid;justify-items:center;max-width:520px;margin:40px auto;padding:44px 30px;border:1px solid var(--line);border-radius:28px;background:var(--card);box-shadow:var(--shadow);text-align:center}.result-stars{display:flex;gap:10px;color:var(--sun-deep)}.result-stars svg:nth-child(2){transform:translateY(-9px) scale(1.25)}.result-stars 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var(--coral-deep)}.lesson-answer:disabled{cursor:default;transform:none}.lesson-bar{position:sticky;bottom:0;z-index:6;display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:22px;padding:16px 20px;border-top:2px solid var(--line);border-radius:18px 18px 0 0;background:#fbf8f1f7;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.lesson-bar.correct{border-color:var(--green-soft);background:var(--green-soft)}.lesson-bar.retry{border-color:var(--coral-soft);background:var(--coral-soft)}.bar-hint{color:var(--muted);font-size:14px;font-weight:700}.bar-copy{display:grid;gap:2px}.bar-copy strong{font-family:var(--display);font-size:20px}.bar-copy span{font-size:14px}.lesson-bar.correct .bar-copy{color:#23694c}.lesson-bar.retry .bar-copy{color:#9c4632}.check-button{padding:14px 28px;border:0;border-radius:14px;color:#fff;background:var(--green);box-shadow:0 4px #2c815a;cursor:pointer;font-family:var(--display);font-size:16px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;white-space:nowrap;transition:transform .1s ease}.check-button:hover:not(:disabled){transform:translateY(-1px)}.check-button:disabled{color:#fff;background:#d5d9dc;box-shadow:0 4px #b9c0c5;cursor:not-allowed}.lesson-bar.retry .check-button{background:var(--coral);box-shadow:0 4px 0 var(--coral-deep)}.tabbar{display:none}@media (max-width: 760px){.sidebar{display:none}.tabbar{position:fixed;z-index:30;right:0;bottom:0;left:0;display:grid;grid-template-columns:repeat(5,1fr);gap:2px;padding:6px 6px calc(6px + env(safe-area-inset-bottom));border-top:1px solid var(--line);background:#fffffff5;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.tabbar .tab{display:grid;justify-items:center;gap:3px;padding:7px 2px;border:0;border-radius:12px;color:var(--muted);background:transparent;cursor:pointer;font-size:11px;font-weight:800}.tabbar .tab.active{color:var(--coral-deep);background:var(--coral-soft)}.page-content{padding-bottom:112px}.trail-card{bottom:84px}.lesson-bar{bottom:76px;flex-wrap:wrap}.lesson-bar .check-button{flex:1 1 100%}.status-pills{gap:6px}.status-pills .pill{padding:5px 9px;font-size:13px}.status-pills .pill.level{display:none}.unit-banner{padding:16px 18px}.unit-banner h3{font-size:20px}.node-blob.left{left:calc(50% + var(--offset) - 150px)}.node-blob.right{left:calc(50% + var(--offset) + 78px)}}@media (max-width: 420px){.node-blob{display:none}.node-title{max-width:120px;font-size:11px}}