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.class-management{margin-top:30px;padding-top:26px;border-top:1px solid #e5eeee}.management-copy{color:#687e83;font-size:13px;margin:0 0 15px}.class-list{display:grid;gap:10px}.class-row{display:grid;grid-template-columns:minmax(0,1fr) auto auto;align-items:center;gap:15px;border:1px solid #c8dddd;border-radius:9px;background:#fbfefe;padding:15px 16px}.class-row-main strong,.class-row-main span{display:block}.class-row-main strong{font-size:14px}.class-row-main span{color:#71868a;font-size:11px;margin-top:5px}.class-row code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;color:#286d70;background:#eef8f7;padding:2px 5px;border-radius:4px}.class-state{font-size:11px;border-radius:12px;padding:5px 9px;color:#2f7b69;background:#eaf8f1;white-space:nowrap}.class-state.disabled{color:#8a6a3b;background:#fff5dd}.class-row-actions{display:flex;gap:8px}.text-button{border:0;background:transparent;color:#287777;font-size:12px;padding:5px}.text-button:hover{text-decoration:underline}.text-button.danger{color:#a05757}.class-row.is-cleared{opacity:.63}.class-row.is-cleared .class-row-main:after{content:'互动记录已清空（合成预览）';display:block;color:#8d6a6a;font-size:11px;margin-top:5px}.class-dialog{width:min(440px,calc(100% - 32px));border:0;border-radius:14px;padding:30px 28px;color:var(--ink);box-shadow:0 25px 80px rgba(24,61,70,.23)}.class-dialog::backdrop{background:rgba(18,53,61,.38)}.class-dialog h2{margin:0 0 18px;font-size:25px}.class-dialog label{display:block;color:#527078;font-size:12px;margin:12px 0 6px}.class-dialog input,.class-dialog select{width:100%;min-height:42px;border:1px solid #afc7ca;border-radius:7px;padding:0 11px;color:var(--ink);background:#fff}.dialog-form-actions{display:flex;justify-content:flex-end;gap:9px;margin-top:20px}.dialog-note{color:#7b9094;font-size:11px;margin:17px 0 0}.entry-feedback{min-height:20px;margin:10px 0 0;font-size:12px}.entry-feedback.success{color:#2d7d6e}.entry-feedback.error{color:#a25959}@media(max-width:700px){.class-row{grid-template-columns:1fr auto}.class-row-actions{grid-column:1/-1;border-top:1px solid #edf3f3;padding-top:9px}.class-state{justify-self:end}}
.privacy-strip{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-top:28px;padding:16px 19px;border:1px solid #cfe1e2;border-radius:10px;background:rgba(255,255,255,.78);color:#5c777c;font-size:12px}.privacy-strip strong{color:#286d70;font-size:13px;margin-right:12px}.privacy-strip span{color:#72878b}.privacy-strip .policy-link{margin:0;white-space:nowrap}@media(max-width:700px){.privacy-strip{display:block}.privacy-strip strong,.privacy-strip span{display:block;margin:0}.privacy-strip span{margin-top:4px}.privacy-strip .policy-link{margin-top:9px}}
.activities-shell{padding-bottom:66px}.activity-intro{display:flex;justify-content:space-between;align-items:flex-end;gap:22px;margin:4px 0 20px;padding:22px 24px;border:1px solid #cfe1e2;border-radius:12px;background:#f8fcfc}.activity-intro h2{font-size:24px;letter-spacing:-.035em;line-height:1.3;margin:0 0 5px}.activity-intro p{max-width:740px;color:#687e83;font-size:13px;margin:0}.activity-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.activity-card{display:flex;flex-direction:column;min-height:350px;padding:22px 21px 20px;border:1px solid var(--line);border-radius:12px;background:#fff;box-shadow:0 8px 24px rgba(31,72,80,.05)}.activity-card-primary{border-color:#acd8d2;background:linear-gradient(145deg,#f4fbfa,#fff)}.activity-card-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.activity-icon{display:grid;place-items:center;width:45px;height:45px;border-radius:12px;background:#e2f2f0;color:var(--teal);font-size:24px;font-family:Georgia,serif}.activity-tag{font-size:11px;color:#6c8588;border:1px solid #d3e4e3;border-radius:15px;padding:5px 9px}.activity-card h2{font-size:24px;letter-spacing:-.035em;margin:22px 0 7px}.activity-card p{color:#667d82;font-size:13px;line-height:1.75;margin:0}.activity-card ul{padding-left:18px;margin:18px 0 22px;color:#6e8286;font-size:12px;line-height:1.95}.activity-card li::marker{color:#49a39b}.activity-action{width:100%;margin-top:auto}.activity-note{display:flex;align-items:center;gap:14px;margin-top:18px;padding:15px 18px;border:1px solid #cfe1e2;border-radius:9px;background:#f5fbfa;color:#647b80;font-size:12px}.activity-note strong{color:#286d70;white-space:nowrap}.activity-note a{color:#2d7775;margin-left:auto;white-space:nowrap}.activity-feedback{min-height:21px;margin:14px 2px 0;color:#2d7775;font-size:12px}.activity-feedback:not(.is-visible){visibility:hidden}@media(max-width:900px){.activity-grid{grid-template-columns:1fr 1fr}.activity-card{min-height:330px}}@media(max-width:700px){.activity-intro{display:block;padding:19px 17px}.activity-intro .review-badge{margin-top:14px}.activity-grid{grid-template-columns:1fr}.activity-card{min-height:0}.activity-note{display:block}.activity-note strong,.activity-note span,.activity-note a{display:block}.activity-note span{margin-top:6px}.activity-note a{margin:9px 0 0}}

.site-footer{flex-wrap:wrap;text-align:center}
/* Homepage prototype 2026-11-13 */
.home-main{width:min(1180px,calc(100% - 40px));margin:0 auto;padding:44px 0 72px}.home-hero{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(420px,.98fr);gap:54px;align-items:center;min-height:520px}.hero-kicker,.section-kicker{color:#247b78;font-size:12px;font-weight:700;letter-spacing:.1em;margin:0 0 18px}.hero-copy h1{font-size:clamp(42px,5vw,70px);line-height:1.08;letter-spacing:-.065em;margin:0;color:#173740;font-weight:700}.hero-copy h1 em{font-style:normal;color:#167e79}.hero-lede{max-width:570px;color:#60777d;font-size:16px;line-height:1.9;margin:25px 0 25px}.hero-actions{display:flex;gap:12px;align-items:center}.button-quiet{border-color:transparent;background:transparent;color:#286d70}.hero-note{font-size:12px;color:#71878b;margin:22px 0 0}.status-dot{display:inline-block;width:8px;height:8px;background:#48b993;border-radius:50%;margin-right:6px}.hero-visual{position:relative;min-height:420px;border:1px solid #c9dddd;border-radius:24px;background:#eef8f7;overflow:hidden;display:grid;place-items:center}.flow-grid{position:absolute;inset:0;background:linear-gradient(rgba(39,121,122,.09) 1px,transparent 1px),linear-gradient(90deg,rgba(39,121,122,.09) 1px,transparent 1px);background-size:34px 34px;mask-image:linear-gradient(135deg,transparent,black 35%,black 70%,transparent)}.flow-vessel{position:relative;width:78%;height:220px;border:3px solid #23666d;border-top:0;border-radius:0 0 70px 70px;background:rgba(255,255,255,.52);overflow:hidden;box-shadow:0 20px 0 -15px rgba(35,102,109,.12)}.flow-water{position:absolute;inset:56% 0 0;background:linear-gradient(#76cbc0,#4ca9aa);opacity:.82}.flow-line{position:absolute;height:2px;background:#fff;opacity:.9;left:8%;right:8%;border-radius:99px}.line-a{top:77px;transform:rotate(3deg)}.line-b{top:110px;transform:rotate(-3deg)}.line-c{top:143px;transform:rotate(3deg)}.flow-arrow{position:absolute;color:#fff;font-size:42px;line-height:1}.arrow-a{right:16%;top:55px}.arrow-b{right:25%;top:123px}.flow-label{position:absolute;font:italic 34px Georgia,serif;color:#1c626b}.label-p{left:12%;top:30px}.label-v{right:9%;bottom:26px}.visual-caption{position:absolute;left:28px;bottom:24px;display:flex;flex-direction:column;color:#48767b}.visual-caption span{font-size:11px;letter-spacing:.12em}.visual-caption strong{font-size:17px;color:#173740;margin-top:4px}.home-triad{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid #cddddd;border-bottom:1px solid #cddddd}.triad-item{display:grid;grid-template-columns:auto 1fr auto;gap:16px;align-items:start;padding:25px 23px 26px;border-right:1px solid #cddddd}.triad-item:last-child{border-right:0}.triad-index{font:italic 18px Georgia,serif;color:#24847f}.triad-item h2{font-size:19px;margin:0 0 5px}.triad-item p{font-size:12px;line-height:1.7;color:#6a8084;margin:0}.triad-arrow{color:#27807b;font-size:20px}.home-course{padding:72px 0 54px}.section-intro{max-width:580px}.section-intro h2,.home-trust h2{font-size:34px;letter-spacing:-.05em;margin:0 0 10px}.section-intro>p:last-child{color:#687f84;font-size:14px;margin:0}.feature-course{display:flex;align-items:center;gap:22px;margin-top:27px;padding:20px 22px;background:#fff;border:1px solid #c9dddd;border-left:6px solid #2a9690;border-radius:10px}.feature-course-mark{display:grid;place-items:center;width:66px;height:66px;border-radius:12px;background:#dff2ef;color:#1f7b77;font:700 22px Georgia,serif}.feature-course-main{flex:1}.feature-course-main span{font-size:11px;color:#32857e;letter-spacing:.06em}.feature-course-main h3{font-size:25px;margin:4px 0}.feature-course-main p{font-size:13px;color:#687f84;margin:0}.home-trust{display:flex;justify-content:space-between;gap:30px;align-items:center;padding:25px 0;border-top:1px solid #cddddd}.home-trust h2{font-size:25px;margin:0}.trust-points{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:10px 18px;max-width:610px;font-size:12px;color:#557277}.trust-points span:before{content:'✓';color:#2d8b7f;margin-right:5px}.trust-points a{color:#287c77;font-weight:600}.site-footer{flex-wrap:wrap;text-align:center}
@media(max-width:850px){.home-hero{grid-template-columns:1fr;gap:30px}.hero-visual{min-height:330px}.home-triad{grid-template-columns:1fr}.triad-item{border-right:0;border-bottom:1px solid #cddddd}.triad-item:last-child{border-bottom:0}.home-trust{display:block}.trust-points{justify-content:flex-start;margin-top:18px}.feature-course{align-items:flex-start;flex-wrap:wrap}.feature-course .button{margin-left:88px}}
@media(max-width:560px){.home-main{width:min(100% - 28px,1180px);padding-top:28px}.hero-copy h1{font-size:43px}.hero-lede{font-size:14px}.hero-visual{min-height:285px}.flow-vessel{width:84%;height:170px}.flow-label{font-size:26px}.flow-arrow{font-size:31px}.home-course{padding:50px 0 40px}.section-intro h2{font-size:28px}.feature-course{display:grid;grid-template-columns:auto 1fr}.feature-course .button{grid-column:2;margin:0;justify-self:start}.site-footer{font-size:10px;gap:8px;padding:13px 12px}}
.hero-copy h1{font-size:clamp(40px,4.3vw,60px)}

.workbench-window{width:78%;border:1px solid #abc9cb;border-radius:13px;background:#fff;box-shadow:0 18px 35px rgba(31,72,80,.12);overflow:hidden}.window-bar{height:38px;background:#e6f2f1;display:flex;align-items:center;gap:6px;padding:0 14px;color:#4e7075;font-size:11px}.window-bar i{width:7px;height:7px;border-radius:50%;background:#7dbbb5}.window-bar span{margin-left:8px}.workbench-body{display:grid;grid-template-columns:90px 1fr;min-height:184px}.workbench-side{background:#f5fbfa;padding:18px 12px;color:#2e7776;font-size:12px}.workbench-side b,.workbench-side span{display:block;padding:7px 5px}.workbench-side span{color:#789095}.workbench-content{padding:25px 20px;color:#1d4e55}.workbench-content small,.workbench-content strong,.workbench-content span{display:block}.workbench-content small{font-size:10px;color:#6d878b}.workbench-content strong{font-size:18px;margin:9px 0 20px}.workbench-content span{font-size:11px;color:#698084;margin-top:12px}.workbench-bars{display:flex;align-items:end;gap:9px;height:45px}.workbench-bars i{display:block;width:24px;background:#64b9b0;border-radius:4px 4px 0 0}.workbench-bars i:nth-child(1){height:23px}.workbench-bars i:nth-child(2){height:40px;background:#2a928b}.workbench-bars i:nth-child(3){height:31px;background:#92d0c8}.portal-orbit{position:relative;width:280px;height:280px;border:1px solid rgba(37,119,119,.25);border-radius:50%;display:grid;place-items:center}.portal-orbit:before,.portal-orbit:after{content:'';position:absolute;border:1px dashed rgba(37,119,119,.24);border-radius:50%}.portal-orbit:before{inset:30px}.portal-orbit:after{inset:67px}.orbit-core{z-index:2;display:grid;place-items:center;width:70px;height:70px;border-radius:50%;background:#1f7f79;color:#fff;font:700 20px Georgia,serif;box-shadow:0 0 0 10px rgba(31,127,121,.12)}.orbit-node{position:absolute;z-index:3;width:90px;padding:11px 8px;text-align:center;border:1px solid #b7d5d2;border-radius:9px;background:rgba(255,255,255,.9);color:#236e70;font-weight:700;font-size:13px}.orbit-node small{font-size:10px;font-weight:400;color:#779094}.node-course{top:-8px}.node-class{right:-37px;bottom:36px}.node-play{left:-37px;bottom:36px}.variant-b .home-course{background:#f6fbfa}.variant-c .home-triad{background:#fff}.variant-c .home-trust{background:#f6fbfa}@media(max-width:850px){.workbench-window{width:84%}.portal-orbit{width:240px;height:240px}.node-class{right:-25px}.node-play{left:-25px}}

/* Simplified lobby prototype based on the Hong Kong lobby */
body.lobby-page{background:#e9f5f5;background-image:radial-gradient(ellipse at 10% 36%,transparent 0 18%,rgba(79,158,163,.12) 18.2% 18.35%,transparent 18.6%),radial-gradient(ellipse at 90% 66%,transparent 0 20%,rgba(79,158,163,.11) 20.2% 20.35%,transparent 20.7%),linear-gradient(90deg,rgba(255,255,255,.16),transparent 30%,rgba(255,255,255,.16));background-size:100% 100%,100% 100%,auto}.lobby-main{min-height:calc(100vh - 74px);width:min(1220px,calc(100% - 40px));margin:0 auto;padding:62px 0 30px;display:flex;flex-direction:column}.lobby-title{text-align:center}.lobby-kicker{font-size:12px;color:#398787;letter-spacing:.1em;margin:0 0 13px}.lobby-title h1{font-size:clamp(35px,4.2vw,56px);letter-spacing:-.06em;margin:0;color:#173740}.lobby-title>p:not(.lobby-kicker){font-size:13px;letter-spacing:.12em;color:#607b80;margin:9px 0 16px}.lobby-status{display:inline-flex;align-items:center;gap:16px;padding:10px 20px;border:1px solid #bfd5d5;border-radius:28px;background:rgba(255,255,255,.58);color:#4a7478;font-size:12px}.lobby-status span:first-child{color:#267f78}.lobby-status i{width:1px;height:16px;background:#b8cdce}.lobby-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin:104px 0 90px}.lobby-card{min-height:170px;padding:26px 18px 22px;text-align:center;border:1px solid #b9d1d2;border-radius:10px;background:rgba(255,255,255,.72);box-shadow:0 5px 16px rgba(34,92,98,.06);transition:transform .18s,background .18s,box-shadow .18s}.lobby-card:hover{transform:translateY(-4px);background:#fff;box-shadow:0 12px 24px rgba(34,92,98,.13)}.lobby-icon{display:block;font-size:34px;line-height:1;margin-bottom:20px}.lobby-card h2{font-size:21px;margin:0 0 10px;color:#173740}.lobby-card p{font-size:12px;color:#718589;margin:0}.lobby-entry{display:flex;justify-content:center;gap:13px;padding-top:16px;border-top:1px solid rgba(113,158,160,.32);color:#718589;font-size:12px}.lobby-entry a{color:#397b7c}.lobby-main+.site-footer{background:rgba(233,245,245,.72)}
@media(max-width:850px){.lobby-main{padding-top:45px}.lobby-cards{grid-template-columns:repeat(2,1fr);margin:72px 0 60px}}
@media(max-width:520px){.lobby-main{width:calc(100% - 24px);padding-top:33px}.lobby-title h1{font-size:32px}.lobby-title>p:not(.lobby-kicker){font-size:10px}.lobby-cards{grid-template-columns:1fr 1fr;gap:10px;margin:55px 0 42px}.lobby-card{min-height:145px;padding:20px 8px 17px}.lobby-icon{font-size:29px;margin-bottom:14px}.lobby-card h2{font-size:18px}.lobby-card p{font-size:11px}.lobby-entry{flex-wrap:wrap;gap:8px;font-size:11px}}
.lobby-page .primary-nav{display:none}.lobby-page .header-actions{margin-left:auto}.lobby-page .account-link{background:rgba(255,255,255,.08)}