:root {
  --ink:#25294b; --navy:#1d2356; --teal:#6150a0; --paper:#f7f6f3;
  --line:#e4e3e8; --muted:#676978; --max:1280px;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:110px;-webkit-text-size-adjust:100%}
body{margin:0;color:var(--ink);background:#fff;font:16px/1.7 var(--sans);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}button,input,textarea{font:inherit;color:inherit}button{cursor:pointer}button:disabled{cursor:wait;opacity:.65}img{max-width:100%;display:block}
[hidden],.hidden{display:none!important}:focus-visible{outline:3px solid #7960bd;outline-offset:5px}
.container{width:min(var(--max),calc(100% - 96px));margin-inline:auto}
.eyebrow{display:inline-block;font-size:10px;font-weight:650;letter-spacing:.18em;color:var(--teal)}
.serif{font-family:Georgia,"Times New Roman",serif;font-weight:400;letter-spacing:-.055em}
.button,.sc-btn{display:inline-flex;align-items:center;justify-content:center;gap:24px;min-height:46px;padding:11px 24px;border:1px solid var(--navy);border-radius:4px;background:var(--navy);color:#fff;font-size:13px;font-weight:600;transition:background .2s}
.button:hover{background:#383575}.button.outline{background:#fff;color:var(--ink);border-color:var(--line)}
.text-link{display:inline-flex;align-items:center;gap:20px;border-bottom:1px solid var(--line);padding:10px 0;font-size:13px}
.skip-link{position:fixed;top:-100px;left:16px;z-index:1000;padding:12px;background:#fff}.skip-link:focus{top:12px}
.site-nav{position:sticky;top:0;z-index:100;background:#fffffffa;border-bottom:1px solid #eeeeef}
.site-nav .inner{width:min(1440px,100%);margin:auto;min-height:100px;padding:16px 48px;display:flex;align-items:center;gap:32px}
.brand{display:inline-flex;align-items:center;flex-shrink:0}.brand-logo{width:238px;height:auto;max-width:100%;object-fit:contain}
.nav-menu{display:flex;gap:36px;margin-left:auto;align-items:center}.nav-menu a{font-size:13px;min-height:44px;display:flex;align-items:center;color:var(--muted)}.nav-menu a:hover,.nav-menu a.is-active{color:var(--navy)}
.nav-right{display:flex;align-items:center;gap:18px;margin-left:20px}.nav-right .button{padding:9px 22px;min-height:40px;font-size:12px}.welcome-name,.welcome-logout{font-size:11px;color:var(--muted)}
.nav-toggle{display:none;width:38px;height:38px;align-items:center;justify-content:center;flex-direction:column;gap:5px;padding:8px;border:0;background:transparent}.nav-toggle span{width:19px;height:1px;background:var(--ink)}
.home-hero{display:grid;grid-template-columns:1fr 1.1fr;gap:60px;align-items:center;padding-top:52px;padding-bottom:56px}
.hero-content{padding:20px 0}.hero-content h1{font-size:clamp(60px,6.4vw,94px);line-height:1.03;margin:24px 0 28px}.hero-content h1 em{font-weight:400;color:#62538a}.hero-chinese{font-size:22px;letter-spacing:.03em;margin:0 0 9px}.hero-description{font-size:13px;color:var(--muted);margin:0 0 30px}.hero-image{position:relative;align-self:stretch;min-height:510px;overflow:hidden;border-radius:3px;background:#e5e7eb}.hero-photo{position:absolute;width:100%;height:100%;object-fit:cover;object-position:63% center}.image-caption{position:absolute;bottom:22px;left:24px;color:#fff;font-size:9px;letter-spacing:.16em;text-shadow:0 1px 6px #111}
.courses-section{padding-top:60px;padding-bottom:100px;border-top:1px solid var(--line)}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:36px}.section-head h2{font-size:34px;line-height:1.4;font-weight:500;letter-spacing:-.035em;margin:10px 0 0}.section-head>p{font-size:12px;color:var(--muted);margin:0;line-height:1.9}
.stage-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:25px}.stage-card{min-width:0}.course-photo{position:relative;aspect-ratio:3/2;overflow:hidden;background:#eeece7;border-radius:3px}.course-photo img{position:absolute;max-width:none;width:200%;height:200%;left:0;top:0;transition:filter .25s;object-fit:fill}.photo-junior img{left:-100%}.photo-senior img{top:-100%}.photo-overseas img{left:-100%;top:-100%}.stage-card:hover .course-photo img{filter:brightness(1.05)}
.stage-copy{padding-top:22px}.stage-copy .eyebrow{font-size:9px}.stage-copy h3{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:23px;font-weight:500;margin:9px 0 10px;letter-spacing:-.03em}.stage-copy h3 span{font-size:20px;color:var(--teal)}.stage-copy p{font-size:12px;color:var(--muted);line-height:1.9;margin:0 0 19px;min-height:46px}.card-link{display:inline-block;font-size:11px;border-bottom:1px solid #ccc9d6;padding-bottom:4px}
.message-section{background:var(--paper);padding:78px 0 70px}.message-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:100px}.message-intro h2{font-size:44px;font-weight:400;line-height:1.35;letter-spacing:-.04em;margin:15px 0 22px}.message-intro>p{font-size:12px;line-height:1.9;color:var(--muted);margin:0 0 24px}.contact-phone{display:inline-flex;gap:35px;font-size:17px;letter-spacing:.02em}.contact-phone span{color:var(--teal)}.wechat-contact{display:flex;align-items:center;gap:18px;margin-top:28px}.wechat-contact img{width:82px;height:82px}.wechat-contact strong,.wechat-contact span{display:block}.wechat-contact strong{font-weight:500;font-size:13px;margin-bottom:4px}.wechat-contact span{font-size:11px;color:var(--muted)}
.message-panel{padding-top:7px;min-width:0}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:24px}.message-panel label{display:block;font-size:12px;font-weight:500;margin-bottom:24px}.message-panel label>span{font-size:10px;color:var(--muted);font-weight:400;margin-left:5px}.message-panel input,.message-panel textarea{display:block;resize:vertical;width:100%;border:0;border-bottom:1px solid #c5c3ce;background:transparent;border-radius:0;margin-top:9px;padding:10px 0;font-size:13px;line-height:1.7}.message-panel input::placeholder,.message-panel textarea::placeholder{color:#757584;font-size:12px}.message-panel textarea{min-height:128px}.message-panel input:focus,.message-panel textarea:focus{outline:none;border-color:var(--teal);box-shadow:0 1px var(--teal)}
.honeypot{position:absolute!important;width:1px!important;height:1px!important;overflow:hidden!important;clip-path:inset(50%);white-space:nowrap}.message-meta{display:flex;justify-content:space-between;gap:20px;margin-top:-13px;color:var(--muted);font-size:10px;line-height:1.8}.message-meta p{margin:0}.message-meta>span{white-space:nowrap}.message-submit{display:flex;align-items:center;gap:20px;margin-top:24px}.message-submit p{font-size:12px;line-height:1.8;margin:0}.message-submit .button{white-space:nowrap;flex-shrink:0}#message-status[data-state=error]{color:#9d302d}#message-status[data-state=success]{color:#296547}
#message-receipt{margin-top:30px;border-top:1px solid var(--line);padding-top:18px}#message-receipt h3{font-size:12px;font-weight:500;margin:0 0 18px}#message-list article{font-size:12px;border-bottom:1px solid var(--line);padding:0 0 14px;margin-bottom:16px;overflow-wrap:anywhere}#message-list strong{font-weight:600}#message-list p{margin:5px 0;white-space:pre-wrap;color:var(--muted)}#message-list .message-reply{color:var(--teal);padding-left:12px;border-left:2px solid #d4cde3}
.site-footer{padding:28px 0;background:#fff;border-top:1px solid var(--line);font-size:10px;color:var(--muted)}.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:25px}.footer-inner .brand-logo{width:175px}.footer-inner>p{margin:0}.footer-links{display:flex;gap:22px}
.learning-mode #home-view{display:none}.learning-hub-panel{min-height:70vh;padding:55px 0 85px;background:var(--paper)}.learning-hub-panel .wrap{width:min(var(--max),calc(100% - 80px));margin:auto}.learning-toolbar{display:flex;gap:20px;margin-bottom:28px}.hub-crumb{display:flex;gap:10px;color:var(--muted);font-size:13px}.catalog-head h2{font-size:34px;margin:12px 0}.catalog-head p{color:var(--muted)}.section-tag{font-size:12px;color:var(--teal)}.hub-stage-grid,.hub-module-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:35px}.hub-stage-card,.hub-module-card{display:flex;align-items:center;gap:20px;padding:28px;border:1px solid var(--line);background:#fff;border-radius:8px;text-align:left;color:var(--ink)}.hub-stage-icon,.hub-module-ico{font-size:26px}.hub-stage-copy,.hub-module-card>span:nth-child(2){display:grid;gap:8px}.hub-stage-copy strong,.hub-module-card strong{font-size:18px;font-weight:600}.hub-stage-copy em,.hub-module-card em{font-size:12px;font-style:normal;color:var(--muted);display:block}.hub-stage-card>i,.hub-module-card>i{margin-left:auto}.hub-stage-card>i::before,.hub-module-card>i::before{content:'↗';font-style:normal}.learning-toolbar .fa-arrow-left::before{content:'←';font-style:normal}
#login-gate{display:none;min-height:100dvh;padding:60px 24px;background:var(--paper)}.show-login-gate #login-gate:not(.hidden){display:grid;place-items:center}.show-login-gate #main-app{display:none}.gate-layout{width:min(850px,100%);display:grid;grid-template-columns:.8fr 1.2fr;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fff}.gate-visual{background:var(--navy);color:#dcd6f1;padding:45px;display:flex;flex-direction:column;justify-content:space-between}.gate-visual h2{font:400 44px/1.1 Georgia,serif;letter-spacing:-.04em}.gate-visual p{font-size:13px;color:#d4cde6}.gate-panel{padding:45px}.gate-brand{display:block;margin-bottom:25px}.gate-brand img{width:260px}.gate-title{font-size:26px;margin:0 0 8px}.gate-desc{font-size:13px;color:var(--muted);min-height:22px}.gate-form{display:grid;gap:12px;margin:24px 0}.gate-form label{font-size:12px;font-weight:650}.gate-input{display:block;width:100%;padding:13px;border:1px solid #bfbdcb;border-radius:4px;margin-top:5px}.gate-switch{font-size:12px;border:0;background:transparent;padding:6px 0;text-align:left;color:var(--teal)}.gate-btn{width:100%}.gate-portals{display:flex;gap:22px;font-size:12px;margin-top:10px;color:var(--muted)}.gate-portals .is-on{color:var(--teal);font-weight:750}.gate-hint{font-size:12px;color:var(--muted)}.gate-hint a{text-decoration:underline}.gate-back-btn{background:#fff;border:0;color:var(--teal);padding:8px 0;font-size:12px}.gate-name-error{color:#a92f22;font-size:13px}.gate-visual img{width:98px;margin-top:25px;border:7px solid #fff;border-radius:4px}.sc-home #sclass-tts-settings{display:none!important}
/* Public course introductions share the studio identity; lesson links retain their own guards. */
.stage-nav{display:flex;gap:30px;margin:auto;font-size:13px;color:var(--muted)}.stage-nav [aria-current=page]{color:var(--teal);text-decoration:underline;text-underline-offset:8px}.detail-home{font-size:12px;white-space:nowrap}.course-hero{display:grid;grid-template-columns:1fr 1.1fr;align-items:center;gap:70px;padding-top:55px;padding-bottom:75px}.breadcrumb{display:block;font-size:11px;color:var(--muted);margin-bottom:25px}.course-hero h1{font-size:clamp(32px,3.5vw,49px);font-weight:400;letter-spacing:-.04em;line-height:1.45;margin:18px 0 22px}.course-hero p{font-size:14px;color:var(--muted);line-height:1.95;margin:0 0 26px;max-width:500px}.course-hero .course-photo{aspect-ratio:3/2}.course-focus{padding:60px 0;border-top:1px solid var(--line)}.focus-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:60px}.focus-grid h3{font-size:19px;font-weight:500;margin:15px 0 12px}.focus-grid p{font-size:13px;color:var(--muted);line-height:1.95;margin:0}.course-modules{padding:45px 0 65px}.module-list{display:grid;grid-template-columns:1fr 1fr;gap:0 50px}.module-list>a{display:flex;align-items:center;justify-content:space-between;gap:22px;padding:25px 0;border-top:1px solid var(--line)}.module-list h3{font-size:17px;font-weight:500;margin:0 0 7px}.module-list p{font-size:12px;color:var(--muted);margin:0}.module-list>a>span{font-size:23px;color:var(--teal)}.module-list>a:hover h3{color:var(--teal)}.course-source-note{font-size:11px;color:var(--muted);margin-top:20px}.course-source-note a{text-decoration:underline;text-underline-offset:4px}.course-next{display:flex;align-items:center;justify-content:space-between;gap:40px;background:var(--paper);padding:40px;margin-bottom:70px}.course-next h2{font-size:27px;font-weight:400;margin:10px 0}.course-next p{font-size:12px;color:var(--muted);margin:0}.course-next>div:last-child{display:grid;justify-items:start;gap:12px;flex-shrink:0}
@media(max-width:1150px){.site-nav .inner{padding-inline:32px;gap:25px}.nav-menu{gap:24px}.nav-right{margin-left:0}.welcome-name{display:none}.home-hero{gap:35px}.hero-content h1{font-size:74px}.hero-image{min-height:460px}.stage-grid{gap:20px}.message-grid{gap:60px}.brand-logo{width:218px}.stage-nav{gap:23px}}
@media(max-width:900px){.container{width:calc(100% - 56px)}.site-nav .inner{min-height:82px;padding:12px 28px;gap:15px}.brand-logo{width:204px}.nav-menu{display:none}.nav-toggle{display:flex}.nav-right{margin-left:auto;gap:10px}.nav-overlay{position:fixed;inset:82px 0 0;background:#1d23564d;z-index:70}.nav-open .nav-menu{display:flex;position:absolute;top:90px;left:28px;right:28px;z-index:80;flex-direction:column;align-items:stretch;gap:0;padding:14px 22px;background:#fff;box-shadow:0 12px 35px #1d235625;border:1px solid var(--line)}.nav-open .nav-menu a{padding:8px}.home-hero{padding-top:35px;padding-bottom:42px;gap:28px}.hero-content h1{font-size:61px}.hero-chinese{font-size:18px}.hero-description{font-size:12px;max-width:240px}.hero-image{min-height:410px}.stage-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px 24px}.stage-copy{padding-top:17px}.stage-copy p{min-height:0;max-width:280px}.courses-section{padding-top:45px;padding-bottom:65px}.message-grid{gap:40px;grid-template-columns:.75fr 1.25fr}.message-intro h2{font-size:36px}.form-row{gap:16px}.message-submit{align-items:start;flex-direction:column;gap:13px}.message-intro>p br{display:none}.message-section{padding:55px 0}.hub-stage-grid,.hub-module-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.course-hero{gap:35px;padding-top:35px;padding-bottom:50px}.course-hero h1{font-size:33px}.course-hero p{font-size:12px}.focus-grid{gap:30px}.stage-nav{gap:20px}.detail-home{display:none}.course-next{padding:30px}.course-next h2{font-size:24px}}
@media(max-width:600px){html{scroll-padding-top:90px}.container{width:calc(100% - 40px)}.site-nav .inner{min-height:76px;padding:10px 20px;gap:10px}.brand-logo{width:184px}.nav-right{gap:6px}.nav-right .button{padding:8px 13px;min-height:36px;font-size:11px}.welcome-logout{display:none}.nav-toggle{width:32px}.nav-overlay{inset:76px 0 0}.nav-open .nav-menu{top:82px;left:20px;right:20px}.home-hero{grid-template-columns:1fr;gap:25px;padding-top:30px;padding-bottom:35px}.hero-content{padding:0}.hero-content .eyebrow{font-size:8px}.hero-content h1{font-size:clamp(58px,15.6vw,83px);line-height:1.02;margin:19px 0 24px}.hero-chinese{font-size:19px;margin-bottom:6px}.hero-description{font-size:11px;max-width:none;margin-bottom:23px}.hero-content .button{font-size:12px;min-height:43px;padding:9px 20px}.hero-image{min-height:0;height:auto;aspect-ratio:1.5}.hero-photo{object-position:62% center}.image-caption{font-size:8px;bottom:16px;left:17px}.section-head{align-items:start;gap:18px;margin-bottom:26px}.section-head h2{font-size:27px}.section-head>p{font-size:10px;max-width:120px;padding-top:7px}.section-head .eyebrow{font-size:8px}.courses-section{padding-top:34px;padding-bottom:45px}.stage-grid{gap:27px 17px}.stage-copy{padding-top:12px}.stage-copy .eyebrow{font-size:8px}.stage-copy h3{font-size:19px;margin-top:5px;margin-bottom:7px}.stage-copy h3 span{font-size:17px}.stage-copy p{font-size:11px;line-height:1.8;margin-bottom:10px;min-height:60px}.card-link{font-size:10px}.message-section{padding:38px 0 42px}.message-grid{grid-template-columns:1fr;gap:30px}.message-intro h2{font-size:34px;line-height:1.3;margin:12px 0 15px}.message-intro h2 br{display:none}.message-intro>p{font-size:11px;margin-bottom:15px}.contact-phone{font-size:16px;gap:24px}.wechat-contact{margin-top:20px}.wechat-contact img{width:70px;height:70px}.wechat-contact strong{font-size:12px}.wechat-contact span{font-size:10px}.message-panel{padding:0}.message-panel label{font-size:11px;margin-bottom:22px}.form-row{gap:18px}.message-panel input,.message-panel textarea{font-size:13px}.message-panel input::placeholder,.message-panel textarea::placeholder{font-size:11px}.message-meta{font-size:9px;gap:10px}.message-submit{gap:14px;margin-top:20px}.message-submit p{font-size:11px}.site-footer{padding:22px 0}.footer-inner{flex-wrap:wrap;gap:17px;align-items:center}.footer-inner .brand-logo{width:150px}.footer-inner>p{order:2;flex-basis:100%;font-size:9px}.footer-links{gap:12px;font-size:9px}.learning-hub-panel{padding:35px 0 60px}.learning-hub-panel .wrap{width:calc(100% - 40px)}.hub-stage-grid,.hub-module-grid{grid-template-columns:1fr}.catalog-head h2{font-size:27px}.hub-stage-card,.hub-module-card{padding:22px}.gate-layout{grid-template-columns:1fr}.gate-visual{display:none}.gate-panel{padding:30px 24px}#login-gate{padding:24px 18px;place-items:start center}.gate-title{font-size:24px}.stage-nav{gap:16px;font-size:11px;margin-left:auto;margin-right:0}.sc-course-intro .site-nav .inner{flex-wrap:wrap;gap:9px}.sc-course-intro .brand-logo{width:175px}.sc-course-intro .stage-nav{gap:14px}.course-hero{grid-template-columns:1fr;gap:28px;padding-top:30px;padding-bottom:40px}.breadcrumb{margin-bottom:19px;font-size:10px}.course-hero h1{font-size:34px;line-height:1.4;margin:13px 0 17px;max-width:330px}.course-hero p{font-size:13px}.course-focus{padding:35px 0}.focus-grid{grid-template-columns:1fr;gap:26px}.focus-grid article{display:grid;grid-template-columns:27px 1fr;gap:0 12px}.focus-grid .eyebrow{grid-row:1/3;padding-top:2px}.focus-grid h3{font-size:17px;margin:0 0 8px}.focus-grid p{grid-column:2;font-size:12px}.course-modules{padding:20px 0 35px}.course-modules .section-head{flex-direction:column;gap:10px}.course-modules .section-head>p{max-width:none;font-size:11px;padding:0}.module-list{grid-template-columns:1fr}.module-list>a{padding:20px 0}.module-list h3{font-size:16px}.module-list p{font-size:11px}.course-source-note{font-size:10px}.course-next{display:block;padding:25px;margin-bottom:35px}.course-next h2{font-size:23px}.course-next>div:last-child{margin-top:25px}.course-next p{font-size:11px}.sc-course-intro .footer-inner>a:last-child{font-size:10px}}
@media(max-width:370px){.brand-logo{width:163px}.nav-right .button{padding:7px 11px}.site-nav .inner{padding-inline:16px}.sc-course-intro .stage-nav{flex-basis:100%;justify-content:space-between;margin:3px 0 0}.stage-copy h3{font-size:17px}.footer-inner .brand-logo{width:130px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
.course-hero h1{text-wrap:balance;line-break:strict}

.footer-links{flex-wrap:wrap;align-items:center}.site-nav .inner{flex-wrap:wrap}.nav-menu{flex-wrap:wrap;row-gap:12px}
.hub-module-grid[data-stage="junior"],#junior-course-modules .module-list{grid-auto-rows:1fr}.hub-module-grid[data-stage="junior"] .hub-module-card{height:100%;min-block-size:104px}#junior-course-modules .module-list>a{min-block-size:110px}

/* ---------- 首页：图片型课程卡片（仅 .sc-home 生效，不影响课程页） ---------- */
.sc-home .home-hero{padding-top:46px;padding-bottom:46px}
.sc-home .hero-chinese{margin:0 0 34px}
.sc-home .section-head{margin-bottom:22px}
.sc-home .courses-section{padding-bottom:86px}
.sc-home .stage-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.sc-home .stage-card{position:relative;display:block;min-width:0;border-radius:5px;overflow:hidden}
.sc-home .stage-card .course-photo{aspect-ratio:3/2;border-radius:5px}
.sc-home .stage-card .course-photo::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(to bottom,rgba(16,20,44,.44) 0%,rgba(16,20,44,0) 32%)}
.sc-home .stage-card .course-photo::after{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(to top,rgba(16,20,44,.8) 0%,rgba(16,20,44,.32) 36%,rgba(16,20,44,0) 64%)}
.sc-home .stage-card .course-photo img{position:absolute;left:0;top:0;width:100%;height:100%;max-width:none;object-fit:cover;object-position:center 42%;transition:transform .7s cubic-bezier(.22,.61,.36,1)}
.sc-home .stage-card:hover .course-photo img{transform:scale(1.04)}
.sc-home .stage-index{position:absolute;top:15px;left:19px;z-index:2;color:#fff;font-size:12px;font-weight:600;letter-spacing:.14em;text-shadow:0 1px 4px rgba(10,14,36,.55)}
.sc-home .stage-copy{position:absolute;left:20px;right:18px;bottom:15px;z-index:2;display:flex;align-items:center;gap:12px;padding:0;color:#fff}
.sc-home .stage-copy h3{margin:0;font-size:27px;line-height:1.2;font-weight:500;letter-spacing:-.015em;color:#fff;justify-content:flex-start}
.sc-home .stage-go{margin-left:auto;font-size:19px;line-height:1;color:#fff;opacity:.85;transition:transform .3s ease,opacity .3s}
.sc-home .stage-card:hover .stage-go{transform:translate(3px,-3px);opacity:1}
.sc-home .stage-card:focus-visible{outline:3px solid #7960bd;outline-offset:4px}
.sc-home .message-section{padding:70px 0 62px}
.sc-home .message-intro h2{font-size:38px;margin:14px 0 30px}
.sc-home .wechat-contact{margin-top:26px}

@media(max-width:900px){
  .sc-home .stage-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
  .sc-home .stage-index{top:11px;left:13px;font-size:10px}
  .sc-home .stage-copy{left:14px;right:13px;bottom:11px;gap:9px}
  .sc-home .stage-copy h3{font-size:21px}
  .sc-home .message-intro h2{font-size:32px;margin-bottom:26px}
}
@media(max-width:600px){
  .sc-home .home-hero{padding-top:22px;padding-bottom:26px}
  .sc-home .hero-chinese{margin-bottom:24px}
  .sc-home .stage-grid{grid-template-columns:1fr;gap:12px}
  .sc-home .stage-copy h3{font-size:23px}
  .sc-home .stage-go{font-size:17px}
  .sc-home .courses-section{padding-bottom:52px}
  .sc-home .message-section{padding:44px 0 46px}
  .sc-home .message-intro h2{font-size:30px}
}

/* ---------- 学习目录：去掉标题与说明后的紧凑版 ---------- */
.sc-home .sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.sc-home .learning-hub-panel{padding:38px 0 72px}
.sc-home .learning-hub-panel .learning-toolbar{margin-bottom:20px}
.sc-home .hub-stage-grid,.sc-home .hub-module-grid{margin-top:0}
.sc-home .hub-stage-card{padding:26px 28px}
.sc-home .hub-stage-copy strong{font-size:19px}
@media(max-width:600px){
  .sc-home .learning-hub-panel{padding:26px 0 48px}
  .sc-home .hub-stage-card{padding:20px 22px}
  .sc-home .hub-stage-copy strong{font-size:17px}
}

/* 学习目录：卡片改为图块，页脚不再被 70vh 空白推远 */
.sc-home .learning-hub-panel{min-height:calc(100vh - 190px)}
.sc-home .hub-stage-grid,.sc-home .hub-module-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.sc-home .hub-stage-card,.sc-home .hub-module-card{position:relative;display:flex;flex-direction:column;align-items:flex-start;justify-content:flex-start;gap:14px;min-height:128px;padding:22px 24px;border:1px solid var(--line);border-radius:12px;background:#fff;transition:border-color .2s ease,transform .25s ease,box-shadow .25s ease}
.sc-home .hub-module-card{min-height:118px}
.sc-home .hub-stage-card:hover,.sc-home .hub-module-card:hover{border-color:#d2cede;box-shadow:0 10px 26px rgba(29,35,86,.07);transform:translateY(-2px)}
.sc-home .hub-stage-icon,.sc-home .hub-module-ico{font-size:26px;line-height:1}
.sc-home .hub-stage-copy{gap:0}
.sc-home .hub-stage-copy strong,.sc-home .hub-module-card strong{font-size:21px;font-weight:600;letter-spacing:-.02em;line-height:1.35}
.sc-home .hub-stage-card>i,.sc-home .hub-module-card>i{position:absolute;top:26px;right:24px;margin:0;font-size:12px;color:#9b99ab;transition:color .2s ease,transform .25s ease}
.sc-home .hub-stage-card:hover>i,.sc-home .hub-module-card:hover>i{color:var(--teal);transform:translate(2px,-2px)}
@media(max-width:900px){
  .sc-home .hub-stage-grid,.sc-home .hub-module-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
  .sc-home .hub-stage-card,.sc-home .hub-module-card{min-height:140px;padding:20px;gap:22px}
  .sc-home .hub-stage-copy strong,.sc-home .hub-module-card strong{font-size:19px}
}
@media(max-width:600px){
  .sc-home .hub-stage-grid,.sc-home .hub-module-grid{grid-template-columns:1fr;gap:10px}
  .sc-home .hub-stage-card,.sc-home .hub-module-card{min-height:0;flex-direction:row;align-items:center;gap:16px;padding:16px 18px}
  .sc-home .hub-stage-copy strong,.sc-home .hub-module-card strong{font-size:17px}
  .sc-home .hub-stage-icon,.sc-home .hub-module-ico{font-size:22px}
  .sc-home .hub-stage-card>i,.sc-home .hub-module-card>i{position:static;margin-left:auto;font-size:11px}
}

/* 学习目录：图标改用 COS 生成的图 */
.sc-home .hub-stage-icon,.sc-home .hub-module-ico{display:flex;align-items:center;justify-content:center;background:#f6f5f2;border-radius:12px}
.sc-home .hub-stage-icon{width:62px;height:62px}
.sc-home .hub-module-ico{width:52px;height:52px;border-radius:11px}
.sc-home .hub-ico-img{display:block;width:44px;height:44px;object-fit:contain}
.sc-home .hub-module-ico .hub-ico-img{width:36px;height:36px}
@media(max-width:600px){
  .sc-home .hub-ico-img{width:30px;height:30px}
  .sc-home .hub-module-ico .hub-ico-img{width:28px;height:28px}
}

/* ---------- 留言区：独立白卡 + 三栏留言 ---------- */
.sc-home .message-section{padding:70px 0 78px}
.sc-home .message-card{background:#fff;border:1px solid #e9e7ee;border-radius:20px;padding:46px 46px 40px;box-shadow:0 22px 60px rgba(29,35,86,.07);overflow:visible}
.sc-home .message-grid{grid-template-columns:.82fr 1.18fr;gap:70px;overflow:visible}
.sc-home .message-intro{min-width:0;overflow:visible}
.sc-home .message-intro h2{font-size:33px;margin:12px 0 30px;letter-spacing:-.03em}
.sc-home .contact-channels{display:grid;justify-items:start;gap:8px;max-width:100%;padding-bottom:12px;border-bottom:1px solid var(--line)}
.sc-home .contact-phone{font-size:25px;font-weight:500;gap:12px;padding-bottom:0;border-bottom:0;letter-spacing:-.01em}
.sc-home .contact-phone span{font-size:15px;transition:transform .2s ease}
.sc-home .contact-phone:hover span{transform:translate(2px,-2px)}
.sc-home .contact-email{display:inline-block;max-width:100%;color:var(--navy);font-size:16px;font-weight:500;line-height:1.45;letter-spacing:.01em;overflow-wrap:anywhere;word-break:break-word;hyphens:none}
.sc-home .contact-email:hover{color:var(--teal)}
.sc-home .wechat-contact{--wechat-qr:76px;--wechat-qr-zoom:1.62;margin-top:28px;gap:16px;overflow:visible;align-items:center}
.sc-home .wechat-qr{margin:0;width:var(--wechat-qr);height:var(--wechat-qr);flex:0 0 var(--wechat-qr);border:0;padding:0;background:transparent;cursor:zoom-in;overflow:visible}
.sc-home .wechat-qr img{width:var(--wechat-qr);height:var(--wechat-qr);border-radius:12px;border:1px solid #efedf3;background:#fff;object-fit:contain;transform-origin:left center;transform:translateZ(0);transition:transform .2s ease,box-shadow .2s ease;image-rendering:-webkit-optimize-contrast}
.sc-home .wechat-copy{min-width:0}
.sc-home .wechat-qr:focus{outline:none}
.sc-home .wechat-qr:focus-visible{outline:3px solid #7960bd;outline-offset:5px;border-radius:14px}
@media(hover:hover) and (pointer:fine){
  .sc-home .wechat-qr{flex-basis:calc(var(--wechat-qr) * var(--wechat-qr-zoom))}
  .sc-home .wechat-qr:hover,.sc-home .wechat-qr:focus-visible{position:relative;z-index:2}
  .sc-home .wechat-qr:hover img,.sc-home .wechat-qr:focus-visible img{transform:scale(var(--wechat-qr-zoom));box-shadow:0 10px 24px rgba(29,35,86,.14)}
}
.sc-home .message-panel{padding-top:6px}
.sc-home .message-panel input,.sc-home .message-panel textarea{background:#f8f7f4;border:1px solid #e7e5ec;border-radius:10px;padding:12px 14px;margin-top:9px;font-size:13.5px;transition:border-color .2s ease,background .2s ease,box-shadow .2s ease}
.sc-home .message-panel input::placeholder,.sc-home .message-panel textarea::placeholder{color:#8d8b9c;font-size:12.5px}
.sc-home .message-panel input:focus,.sc-home .message-panel textarea:focus{border-color:var(--teal);background:#fff;box-shadow:0 0 0 3px rgba(97,80,160,.1);outline:none}
.sc-home .message-panel textarea{min-height:118px}
.sc-home .message-meta{margin-top:2px}
.sc-home .message-submit{margin-top:22px;gap:16px}
.sc-home .message-submit .button{width:100%;min-height:50px;border-radius:10px;padding:0 22px;justify-content:space-between;font-size:13.5px;letter-spacing:.02em}
.sc-home #message-receipt{margin-top:40px;border-top:1px solid #eceaf0;padding-top:26px}
.sc-home #message-receipt h3{font-size:11px;font-weight:600;letter-spacing:.14em;color:#8f8d9e;margin:0 0 16px}
.sc-home #message-list{display:flex;flex-wrap:wrap;gap:16px}
.sc-home #message-list article{flex:1 1 240px;max-width:calc(33.333% - 11px);min-width:0}
.sc-home #message-list article{display:flex;flex-direction:column;gap:9px;background:#faf9f6;border:1px solid #eeecf1;border-radius:12px;padding:18px 18px 16px}
.sc-home .message-head{display:flex;align-items:baseline;justify-content:space-between;gap:10px}
.sc-home .message-head strong{font-size:13px;font-weight:600;overflow-wrap:anywhere}
.sc-home .message-time{font-size:10px;color:#a4a2b2;letter-spacing:.04em;white-space:nowrap}
.sc-home #message-list article>p{font-size:12.5px;line-height:1.8;color:#4a4d63;margin:0;overflow-wrap:anywhere}
.sc-home #message-list .message-reply{background:#f1eef8;border-left:2px solid #b7aad9;border-radius:8px;padding:9px 11px;color:#4a4462;font-size:11.5px;line-height:1.7}
@media(max-width:900px){
  .sc-home .message-card{padding:34px 26px 30px;border-radius:16px}
  .sc-home .message-grid{grid-template-columns:1fr;gap:32px}
  .sc-home #message-list article{flex-basis:100%;max-width:none}
}
@media(max-width:600px){
  .sc-home .message-section{padding:38px 0 44px}
  .sc-home .message-card{padding:24px 18px 22px;border-radius:14px}
  .sc-home .message-intro h2{font-size:26px;margin:8px 0 20px}
  .sc-home .contact-phone{font-size:21px}
  .sc-home .contact-email{font-size:15px}
  .sc-home .wechat-contact{--wechat-qr:70px}
  .sc-home .message-submit .button{min-height:46px}
  .sc-home .form-row{grid-template-columns:1fr;gap:14px}
}