@font-face{font-family:"LL Num";src:url("/brand-numbers.woff2") format("woff2");font-weight:400 900;font-display:swap;unicode-range:U+0020,U+002B-002F,U+0030-003A,U+00A5,U+00D7,U+2013}
/* LindseyLingo — shared warm, flat visual language from the course catalogue. */
:root{--bg:#fff;--bg-soft:#fbfaf6;--paper:#fff;--card:#fff;--text:#3a3835;--ink:#1c1c1c;--muted:#74706a;--line:#eeede7;--yellow:#ffc934;--cream:#fff0c6;--lav:#e8dffa;--pink:#f9ddd5;--sage:#e2ecd8;--teal:#1c1c1c;--teal-dark:#3a3835;--orange:#ffc934;--shadow:none;--brand-font:"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;color-scheme:light}
html{scroll-padding-top:100px}
body{background:var(--bg);color:var(--text);font-family:var(--brand-font);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}
button,input,textarea,select{font-family:var(--brand-font)}
button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}
:focus-visible{outline:3px solid var(--ink);outline-offset:4px}
::selection{background:var(--cream);color:var(--ink)}
h1,h2,h3,h4{color:var(--ink);font-family:var(--brand-font);font-weight:900}
.wrap{width:min(1080px,calc(100% - 40px))}
.mono,.brand small,.number,.wechat-id{font-family:var(--brand-font);color:var(--ink)}
.mono{font-size:12px;font-weight:700;letter-spacing:.09em}
body>nav{background:#fff;border-bottom:1px solid var(--line);backdrop-filter:none}
.nav-inner{height:76px;gap:20px}
.brand-logo{width:36px;height:36px;box-shadow:none;border:0}
.brand{font-size:21px;letter-spacing:-.5px;line-height:1.2}
.brand small{margin-top:5px;font-size:10px;letter-spacing:.1em;color:var(--muted);font-weight:500}
.nav-links{gap:20px;font-size:13px;color:var(--muted);font-weight:700}
.nav-links a{white-space:nowrap}
.nav-links a:hover{color:var(--ink)}
.nav-tools{display:flex;align-items:center;gap:10px;flex-shrink:0}
body .nav-notebook,body .nav-login{font-family:var(--brand-font);color:var(--ink);font-weight:700;font-size:12px;background:transparent;border:0;padding:10px 4px}
body .nav-login:hover{background:var(--bg-soft)}
.nav-cta{border:0;background:var(--ink);color:#fff;font-size:13px;font-weight:700;padding:11px 20px;min-height:42px}
.nav-cta:hover{background:var(--text);color:#fff}
.hero{padding:78px 0 60px;text-align:center;overflow:visible}
.hero:before,.hero:after{display:none}
.hero-grid>.reveal{max-width:none}
.hero .eyebrow{display:inline-flex;gap:8px;align-items:center;background:var(--cream);border-radius:999px;padding:7px 16px;margin:0 0 26px;letter-spacing:.05em;font-size:12px}
.hero h1{font-size:clamp(38px,5.5vw,64px);line-height:1.25;letter-spacing:-1.8px;margin:0 0 24px}
.hero h1 span{position:relative;display:inline-block;isolation:isolate}
.hero h1 span:after{content:"";position:absolute;inset:65% -8px 2px;z-index:-1;background:var(--yellow);border-radius:8px;transform:rotate(-1deg)}
.hero-copy{max-width:590px;margin:0 auto 28px;font-size:17px;color:var(--muted)}
.actions{justify-content:center;gap:12px}
.btn{min-height:50px;padding:0 26px;gap:10px;border-radius:999px;font-size:15px;font-weight:800;box-shadow:none;transition:background .15s,transform .15s}
.btn-primary{background:var(--ink);color:#fff;box-shadow:none;border:0}
.btn-primary:hover{background:var(--text);transform:none}
.btn-ghost{background:#fff;border:1.5px solid var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--bg-soft)}
.btn:active{transform:scale(.97)}
.hero-note{margin:20px 0 0;font-size:12px;color:var(--muted)}
.start-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:46px auto 0;max-width:940px;text-align:left}
.start-card{padding:25px 26px;border-radius:26px;display:flex;flex-direction:column;align-items:flex-start;position:relative;transition:transform .18s;background:var(--yellow)}
.start-card:nth-child(2){background:var(--sage)}
.start-card:nth-child(3){background:var(--lav)}
.start-card:hover{transform:translateY(-3px)}
.start-icon{display:grid;place-items:center;width:48px;height:48px;border-radius:50%;background:#fff;color:var(--ink);margin-bottom:20px}
.start-icon svg{width:24px;height:24px}
.start-card strong{font-size:20px;color:var(--ink);font-weight:800}
.start-card small{color:#4a4740;font-size:13px;margin-top:6px}
.start-arrow{position:absolute;right:24px;top:32px;font-size:22px;color:var(--ink)}
section{padding:64px 0}
.section-head{margin-bottom:28px}
.section-head h2{font-size:34px;letter-spacing:-1px}
.section-head p,.group-head p{color:var(--muted)}
body .assessment-strip{background:#fff;padding:0 0 64px;border:0}
body .assessment-entry{background:var(--cream);padding:30px 34px;border-radius:28px;gap:28px}
body .assessment-entry h2{font-size:26px;margin:8px 0}
body .assessment-entry p{color:var(--text)}
body .assessment-entry .mono{color:var(--ink)}
.about{background:var(--bg-soft);border-top:1px solid var(--line)}
.about-grid{grid-template-columns:.8fr 1.2fr;gap:56px;align-items:center}
.portrait{border-radius:28px;background:var(--cream)}
.portrait-label{background:var(--cream);color:var(--ink);box-shadow:none;left:18px;top:18px}
.portrait-photo{height:330px}
.about h3{font-size:30px;letter-spacing:-.7px}
.about .quote{background:var(--cream);border:0;border-radius:20px;padding:18px 22px;font-size:15px}
.knowledge{background:#fff}
.knowledge-groups{grid-template-columns:1fr;align-items:start;gap:28px}
.knowledge-group{background:var(--bg-soft);border:0;border-radius:28px;padding:24px;min-width:0}
.group-head{align-items:start;gap:16px;flex-wrap:wrap}
.group-head h3{font-size:24px;letter-spacing:-.5px}
.article-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.article-card{background:var(--sage);border:0;border-radius:24px;padding:25px;min-height:170px;color:var(--ink);box-shadow:none;margin:0}
.knowledge-group:nth-child(2) .article-card{background:var(--lav)}
.article-card h3{font-size:20px;line-height:1.5;letter-spacing:-.4px}
.article-card p{color:#5a564f}
.article-card:hover{transform:translateY(-2px);box-shadow:none;outline:2px solid var(--ink);outline-offset:2px}
.article-card.is-latest{background:var(--yellow);border:0;box-shadow:none}
.knowledge-group.permission-locked .article-card{opacity:1;filter:none}
.knowledge-group:nth-child(2) .article-card.is-latest{background:var(--pink)}
.card-index{margin-bottom:20px;gap:10px}
.number{font-size:11px;font-weight:700;letter-spacing:.08em}
.tag{border:0;background:#fff;color:var(--ink);font-size:11px;font-weight:700;padding:4px 10px}
.new-badge{background:var(--ink);color:#fff;box-shadow:none;font-family:var(--brand-font)}
.course-link{color:var(--ink);padding-top:16px}
.remaining-toggle{margin-top:16px;border:1px solid var(--ink);border-radius:999px;background:#fff;color:var(--ink);font-family:var(--brand-font);font-size:13px;padding:12px 18px}
.remaining-toggle:hover,.remaining-toggle.is-open{background:var(--cream);border-color:var(--ink);color:var(--ink)}
.permission-notice{background:var(--cream);color:#5c4000;border:0;border-radius:18px}
.permission-notice button{color:var(--ink);font-family:var(--brand-font)}
.kitchen{background:var(--bg-soft);border:0}
.kitchen-card{background:var(--pink);border:0;border-radius:28px}
.kitchen-card:hover{border:0}
.contact{background:#fff}
.contact-grid{background:var(--ink);border-radius:32px;padding:40px;align-items:center;gap:40px}
.contact h2,.contact .mono,.contact strong{color:#fff}
.contact p,.contact-box span{color:#d7d4cc}
.contact-box{margin:0;padding:0;border:0}
.contact .btn-primary{background:var(--yellow);color:var(--ink)}
.contact .btn-primary:hover{background:var(--cream)}
.contact .btn-ghost{color:#fff;background:transparent;border-color:#fff}
footer{background:var(--bg-soft);border-color:var(--line);color:var(--muted);padding:28px 0 36px}
footer a{color:var(--muted)}
.wechat-modal,.choice-modal,.notebook-modal{background:#fff;border-radius:28px;box-shadow:none}
.wechat-id{background:var(--yellow);color:var(--ink);border-radius:16px;font-size:24px;font-weight:800}
.wechat-tip{color:var(--muted)!important}
.modal-close{color:var(--muted);min-width:44px;min-height:44px}
.notebook-tab{font-family:var(--brand-font);border:0;border-radius:999px;background:var(--bg-soft);color:var(--muted)}
.notebook-tab.is-active{background:var(--yellow);border:0;color:var(--ink)}
.note-item{border:0;background:var(--bg-soft);border-radius:20px}
.note-item small{color:var(--muted)}
.note-delete{background:var(--pink);color:var(--ink)}
.note-speak{background:var(--sage);color:var(--ink);border:0;font-family:var(--brand-font)}
.selection-action button{background:var(--cream);color:var(--ink);font-family:var(--brand-font)}
/* Shared dialogs inject their styles at runtime; scope these to the homepage. */
body .student-auth-modal,body .assessment-modal{background:#fff;border:0;border-radius:28px;box-shadow:none}
body .student-auth-actions button,body .assessment-start,body .assessment-restart,body .assessment-secondary,body .assessment-login-button{border-radius:999px;box-shadow:none}
body .student-auth-profile-card,body .assessment-box,body .assessment-plan{border:0;border-radius:20px;background:var(--bg-soft)}
body .assessment-result-level{background:var(--yellow);color:var(--ink);border-radius:22px}
body .assessment-option,body .assessment-answer{border-radius:18px}
body #gaogao-ai-trigger{background:var(--yellow);filter:none;box-shadow:none;width:58px;height:58px}
body #gaogao-ai-trigger:hover{filter:none;transform:translateY(-2px)}
body .gaogao-ai-aura,body .gaogao-ai-spark{display:none}
body .gaogao-ai-core{inset:0;background:transparent;box-shadow:none;animation:none}
body .gaogao-ai-core:before,body .gaogao-ai-core:after{background:var(--ink);box-shadow:none;width:6px;height:8px;top:22px}
body .gaogao-ai-core:before{left:18px}body .gaogao-ai-core:after{left:34px}
body #gaogao-ai-panel{font-family:var(--brand-font);border:1px solid var(--line);background:#fff;border-radius:28px;box-shadow:0 12px 40px #1c1c1c14}
body .gaogao-ai-head{background:var(--cream);border:0}
body .gaogao-ai-orb{background:var(--yellow);box-shadow:none}
body .gaogao-ai-orb:after{background:var(--ink);box-shadow:9px 0 var(--ink)}
body .gaogao-ai-send{border-radius:999px}
@media(min-width:761px){.knowledge-group .group-head{align-items:center}.knowledge-group .group-head p{max-width:450px}}
@media(max-width:1100px){
 .nav-inner{height:auto;min-height:76px;flex-wrap:wrap;gap:12px;padding-top:14px;padding-bottom:12px}
 .nav-tools{margin-left:auto}.nav-links{order:3;display:flex;width:100%;margin:0;justify-content:center;gap:28px;padding-top:4px}
 html{scroll-padding-top:130px}
}
@media(max-width:760px){
 .wrap{width:calc(100% - 32px)}
 .nav-inner{gap:8px}.brand-logo{display:none}.identity{gap:0}.brand{font-size:18px}.brand small{font-size:9px}
 .nav-tools{gap:8px}body .nav-login,body .nav-notebook{font-size:11px!important;padding:8px 0!important}
 .nav-cta{font-size:12px!important;padding:9px 14px!important;min-height:38px}
 .nav-links{justify-content:space-between;font-size:12px;gap:12px;padding-top:10px}
 .hero{padding:44px 0 36px}.hero .eyebrow{font-size:10px;padding:6px 12px;margin-bottom:22px}
 .hero h1{font-size:38px;letter-spacing:-1.5px;line-height:1.28}.hero-copy{font-size:15px;max-width:32em;margin-bottom:24px}
 .hero .btn{min-height:46px;padding:0 20px;font-size:13px}.hero-note{font-size:11px;max-width:27em;margin:18px auto 0}
 .start-grid{gap:10px;margin-top:30px}.start-card{padding:18px 12px;border-radius:22px;align-items:center;text-align:center}
 .start-icon{width:42px;height:42px;margin-bottom:12px}.start-icon svg{width:22px;height:22px}.start-card strong{font-size:14px}.start-card small{font-size:11px;line-height:1.55}.start-arrow{display:none}
 section{padding:42px 0}.section-head{align-items:start;gap:12px}.section-head h2{font-size:28px}.section-head p{font-size:13px}
 body .assessment-strip{padding-bottom:40px}body .assessment-entry{padding:24px;border-radius:24px;gap:20px;align-items:flex-start}body .assessment-entry h2{font-size:23px}body .assessment-entry .btn{width:100%}
 .about-grid{grid-template-columns:1fr;gap:28px}.portrait-photo{height:300px}.about h3{font-size:27px}.about p{font-size:15px}
 .knowledge-groups{grid-template-columns:1fr;gap:24px}.knowledge-group{padding:20px;border-radius:26px}.article-card{padding:22px;min-height:165px}.article-card h3{font-size:19px}.article-cards{grid-template-columns:1fr;gap:14px}.group-head{gap:10px}.group-head p{font-size:12px}
 .contact-grid{padding:28px 24px;gap:24px;grid-template-columns:1fr;border-radius:28px}.contact h2{font-size:28px}.contact-box{padding-top:22px;border-top:1px solid #ffffff30}
 footer{padding-bottom:80px}footer .wrap{gap:8px;flex-direction:column;align-items:flex-start}
 .choice-actions{grid-template-columns:1fr}.notebook-modal{padding:24px 20px}.notebook-head h2{font-size:24px}
}
@media(max-width:360px){.wrap{width:calc(100% - 24px)}.brand{font-size:16px}.nav-tools{gap:6px}.nav-cta{padding:8px 10px!important}.hero h1{font-size:34px}.start-card{padding:16px 8px}.start-card strong{font-size:13px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}}

.number,.assessment-result-level{font-family:"LL Num",var(--brand-font)}