/* 平台所有路由共用同一底图；课程 iframe 保留作品自身样式。 */
:root{--site-blue:#1c70aa;--site-page-image:linear-gradient(110deg,#072f5033,transparent 70%),url('./assets/portfolio/planet-blue-background-v1.jpg')}
body,body.auth-page-active,body.aurora-active,body.space-cover-active,body.nature-gallery-active{background-color:var(--site-blue);background-image:var(--site-page-image);background-size:cover;background-position:center;background-attachment:fixed}
body>.aurora-active::before,body.aurora-active::before{display:none}
.np-portfolio{background-image:var(--site-page-image)}
.sp-cover{background:transparent}.sp-sky{inset:0;background:var(--site-page-image) center/cover no-repeat;filter:none;transform:none}.sp-sky-shade{background:linear-gradient(180deg,#07395c30,transparent 42%,#0c447124)}
.topbar,body.auth-page-active .topbar,body.aurora-active .topbar{background:#12548099;border-color:#d5f1ff44;backdrop-filter:blur(18px);color:#f0faff}.topbar .brand-mark,body.aurora-active .brand-mark{background:#d8f1ff;color:#1c567a}.topbar .brand small{color:#c7e8ff}.topbar .topnav>.active{color:#fff}.topbar .btn{background:#dbf2ff;color:#154363;border-color:#e9f7ff77}.topbar .nav-divider{background:#d8efff55}
.footer,body.auth-page-active .footer,body.aurora-active .footer{background:transparent;border-color:#d3efff44;color:#d9eeff}.footer .contact-details,.footer .contact-name,.footer .contact-details a{color:#eaf7ff}.footer a:hover{color:#fff}.site-footer-links{display:flex;justify-content:center;gap:25px;font-size:12px;letter-spacing:0;margin-bottom:14px}
.auth-page{background:transparent}.auth-page::before,.auth-page::after{display:none}.auth-page .auth-shell{background:#f8fcfff5;border-color:#c4e9fa99;box-shadow:0 20px 70px #06395e30}.auth-page .auth-art{background:linear-gradient(145deg,#17658fc9,#358fafd9)}.auth-page .auth-art h2,.auth-page .auth-art p,.auth-page .auth-art .eyebrow,.auth-page .auth-art .auth-note{color:#ecfaff}.auth-page .auth-globe{color:#d5f3ff}.auth-page .auth-art .auth-note{border-color:#c3e9fb66}.auth-page .form .btn{background:#246e9b;color:#fff}.auth-page .form .btn:hover{background:#1b577e}
.detail-head,.detail-panels .panel{--muted:#c6e5f6;--ink:#effaff;--blue:#b9e7fb;--line:#c6eafa44;color:var(--ink)}
body.aurora-active .detail-head,body.aurora-active .detail-panels .panel{background:#0b4068c9;border-color:#d0edff44;backdrop-filter:blur(14px)}.aurora-active .detail-head .btn{background:#daf2ff;color:#153f5e}.aurora-active .detail-head .btn.secondary,.aurora-active .detail-panels .btn.secondary{background:#eefaff12;color:#d7f2ff;border-color:#b8e5ff44}.aurora-active .back{color:#d5edff}.aurora-active .detail-head .pill.live{background:#72cfe329;color:#d1fcff}
.page>.page-heading,.page>.admin-top,.page>.admin-tabs,.page>.admin-intro{color:#eefaff}.page>.page-heading p,.page>.admin-intro p{color:#d8eeff}.page>.panel,.admin-stat .panel,.table-wrap,.account .panel{color:#1b405b;background:#f6fcfff0}.page .notice{color:#315b76;background:#e3f4ffed}.page .file-icon{color:#2675a3;background:#caeaff29}
.site-navigation{display:none;position:relative}.site-navigation>summary{list-style:none;cursor:pointer;color:#eaf8ff;font-size:12px;white-space:nowrap;padding:10px 7px}.site-navigation>summary::-webkit-details-marker{display:none}.site-navigation[open]>summary{background:#e5f6ff22;border-radius:7px}.site-menu-panel{position:absolute;top:100%;right:0;display:grid;gap:3px;background:#104b75f5;border:1px solid #d1edff55;border-radius:12px;padding:10px;min-width:166px;box-shadow:0 15px 35px #07335455;backdrop-filter:blur(18px);z-index:1000}.site-menu-panel a{display:block;font-size:13px;color:#eaf8ff;padding:11px 13px;border-radius:6px;white-space:nowrap}.site-menu-panel a:hover{background:#d6f1ff22}.sp-nav .site-navigation{height:auto;align-self:center}.sp-nav{gap:clamp(16px,2.5vw,48px)}.sp-header,.np-header{color:#f5fcff}.np-menu-links{flex-wrap:wrap;row-gap:18px}
.site-info-page{max-width:1150px;margin:0 auto;padding:40px 32px 70px;color:#f2fbff;min-height:calc(100svh - 220px)}.site-info-back{font-size:12px;color:#d7efff;display:inline-block;margin-bottom:40px}.site-info-hero{padding:20px 0 36px;max-width:900px}.site-kicker{font-size:10px;letter-spacing:3px;color:#bdeaff;margin-bottom:20px}.site-info-hero h1{font:500 clamp(32px,4.5vw,58px)/1.5 "Songti SC","Noto Serif CJK SC",serif;letter-spacing:2px;margin-bottom:22px;text-shadow:0 3px 18px #0c497755}.site-info-hero>p:last-of-type{color:#e2f5ff;font-size:14px;line-height:2;max-width:820px}.site-info-actions{display:flex;gap:15px;margin-top:27px;flex-wrap:wrap}.site-primary,.site-secondary{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:43px;border-radius:9px;padding:11px 19px;font-size:13px;font-weight:550;border:1px solid #e3f7ff88;background:#dff4ff;color:#194d6d}.site-primary:hover{background:#f3fcff}.site-secondary{background:#0d497429;color:#f2fbff}.site-secondary:hover{background:#d5f0ff20}.site-info-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.site-info-card{background:#0b4a76a8;border:1px solid #c7edff55;border-radius:18px;padding:27px 25px;backdrop-filter:blur(15px)}.site-info-index{display:block;font-size:9px;letter-spacing:2px;color:#a5dff6;margin-bottom:25px}.site-info-card h2{font:500 23px/1.4 "Songti SC",serif;letter-spacing:1px;margin-bottom:16px}.site-info-card>p{font-size:13px;line-height:1.95;color:#d7effb}.contact-grid{grid-template-columns:1fr 1fr;margin-top:5px}.site-info-card .site-contact-value{font:400 clamp(18px,2.5vw,28px)/1.5 Arial,sans-serif;color:#fff;margin:12px 0 20px;overflow-wrap:anywhere;letter-spacing:.5px}.site-info-card .site-primary{margin-top:25px}.site-info-note{padding:26px 0;margin-top:26px;border-top:1px solid #cfedff66}.site-info-note h2{font-size:18px;font-weight:500;margin-bottom:12px}.site-info-note p{font-size:12px;color:#daefff;line-height:1.95;max-width:900px}.site-info-note>a{font-size:12px;color:#eefaff;display:inline-block;margin-top:18px;border-bottom:1px solid #addff477;padding-bottom:6px}.site-catalog-note{margin-top:12px}.site-info-page :focus-visible,.site-navigation :focus-visible{outline:2px solid #d2f5ff;outline-offset:4px}
.sp-nav .nav-about,.sp-nav .nav-contact{display:flex}
@media(max-width:1100px){.topnav{gap:17px;font-size:12px}.brand strong{font-size:18px}.brand small{font-size:8px}.site-info-page{padding:30px 25px 50px}}
@media(max-width:760px){body,body.auth-page-active,body.aurora-active,body.space-cover-active,body.nature-gallery-active{background-position:64% center;background-attachment:scroll}.np-portfolio{background-position:64% center}.sp-sky{background-position:64% center}.topbar{padding:0 15px;gap:9px}.topnav{gap:8px}.topnav .nav-about,.topnav .nav-contact{display:none}.site-navigation{display:block}.topbar .brand small{font-size:7px;letter-spacing:1px}.topbar .brand strong{font-size:16px}.topbar .brand{gap:8px}.topbar .brand-mark{width:33px;height:34px}.topnav .btn{font-size:11px;padding:8px 10px}.topnav>.logged-name .user-name{display:none}.sp-nav{gap:12px}.sp-nav>a:not(.sp-enroll){display:none!important}.sp-nav .site-navigation{display:block}.site-info-page{padding:24px 20px 45px}.site-info-back{margin-bottom:24px}.site-info-hero{padding:12px 0 27px}.site-info-hero h1{font-size:32px;letter-spacing:1px}.site-info-hero>p:last-of-type{font-size:12px;line-height:1.9}.site-info-grid,.contact-grid{grid-template-columns:1fr;gap:15px}.site-info-card{padding:24px 21px}.site-info-index{margin-bottom:17px}.site-info-card h2{font-size:22px}.site-info-card>p{font-size:12px}.site-info-card .site-contact-value{font-size:22px}.site-info-actions{gap:10px}.site-primary,.site-secondary{font-size:12px;padding:10px 15px}.site-footer-links{font-size:11px;gap:22px}.footer .contact-details{font-size:11px}.auth-page .auth-art .auth-note{color:#e7f8ff}}
.nature-gallery-active #app>.site-footer-links{display:none}
@media(max-width:760px){.sp-nav .sp-enroll{white-space:nowrap}.topnav>a[href$='/login']{font-size:11px}.topnav .avatar{width:28px;height:28px}}
#modal .modal-head{background:#125480;color:#edfaff;border-color:#bde8ff55}#modal .modal-head .btn.secondary{background:#e2f4ff17;color:#e9f8ff;border-color:#bee7ff55}#modal .modal-head .close{background:#ccefff20;color:#f1fbff}
@media(min-width:761px) and (max-width:900px){.topnav .nav-about,.topnav .nav-contact{display:none}.topnav .site-navigation{display:block}}
.contact-additional{margin-top:10px;padding-top:10px;border-top:1px solid #d1edff33}