:root{color:#1d2433;background:#f4f4f4;font-family:Inter,PingFang SC,Microsoft YaHei,Helvetica Neue,Arial,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}.site-shell.home-overlay-shell .page.home-page-shell{min-height:100vh;min-height:100svh;padding:0!important;overflow:hidden}.site-shell.home-overlay-shell .page.home-page-shell>.container{width:100%!important;max-width:none!important;min-height:100vh;min-height:100svh;margin:0}.site-shell.home-overlay-shell .page.home-page-shell .home-content-stack{display:block;width:100%;height:100vh;height:100svh;min-height:100vh;min-height:100svh;gap:0!important;padding:0!important;border-radius:0!important}.site-shell.home-overlay-shell .page.home-page-shell .home-media-stage{width:100%;height:100%;min-height:100%;border-radius:0!important}.site-shell.home-overlay-shell .page.home-page-shell .home-desktop-video,.site-shell.home-overlay-shell .page.home-page-shell .home-desktop-image,.site-shell.home-overlay-shell .page.home-page-shell .home-mobile-video,.site-shell.home-overlay-shell .page.home-page-shell .home-mobile-image{width:100%;min-width:100%;height:100%;min-height:100%;margin:0}@media (max-width: 980px){.nav-list{top:74px;left:auto;right:12px;width:min(360px,calc(100vw - 24px));min-height:auto;max-height:calc(100vh - 86px);padding:14px;gap:12px;border:1px solid rgba(255,255,255,.18);border-radius:26px;background:linear-gradient(180deg,rgba(246,255,251,.96) 0%,rgba(255,255,255,.98) 100%);box-shadow:0 24px 60px #0f172a33}.mobile-nav-head{gap:8px;margin-bottom:2px;padding:18px 18px 16px;border-radius:20px}.nav-item,.nav-link-group{width:100%}.nav-list a,.nav-list button,.user-nav-link{display:flex;align-items:center;min-height:52px;border-radius:18px}.nav-list a,.nav-list button{padding:0 16px}.nav-link-group>a,.nav-link-group>button{height:52px}.submenu-toggle{justify-content:center!important}.category-menu,.nav-submenu{margin-top:10px;padding:10px;border-radius:18px;background:rgba(226,232,240,.72);box-shadow:inset 0 0 0 1px #94a3b82e}.category-menu a,.nav-submenu a{min-height:42px;border-radius:14px;background:rgba(255,255,255,.72)}}@media (max-width: 640px){.nav-list{top:66px;right:10px;width:calc(100vw - 20px);max-height:calc(100vh - 78px);padding:12px;border-radius:22px}.mobile-nav-head{padding:16px;border-radius:18px}.nav-list a,.nav-list button,.user-nav-link{min-height:50px;font-size:14px}}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px;background:#f4f4f4}.site-shell{display:flex;min-height:100vh;flex-direction:column}.site-shell.home-overlay-shell .topbar{position:fixed;top:0;left:0;right:0;z-index:50;background:transparent;border-bottom-color:transparent;box-shadow:none;-webkit-backdrop-filter:none;backdrop-filter:none}.site-shell.home-overlay-shell .nav-wrap{min-height:66px}.site-shell.home-overlay-shell .brand{padding:6px 10px;border-radius:14px;background:transparent;box-shadow:none}.site-shell.home-overlay-shell .nav-list{color:#111;text-shadow:none}.site-shell.home-overlay-shell .nav-list a,.site-shell.home-overlay-shell .nav-list button,.site-shell.home-overlay-shell .player-back,.site-shell.home-overlay-shell .player-actions{color:inherit;font-weight:700}.site-shell.home-overlay-shell .user-nav-link,.site-shell.home-overlay-shell .user-nav-phone,.site-shell.home-overlay-shell .nav-list a.active,.site-shell.home-overlay-shell .nav-list button.active{color:#111}.site-shell.home-overlay-shell .brand-avatar{box-shadow:0 10px 24px #0003}.site-shell.home-overlay-shell .brand-logo{filter:brightness(1.05)}.site-shell.home-overlay-shell .mobile-nav-toggle{background:rgba(255,255,255,.12)}.site-shell.home-overlay-shell .mobile-nav-toggle span,.site-shell.home-overlay-shell .nav-caret:before,.site-shell.home-overlay-shell .nav-caret:after{background:#111111}.account-lock-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1300;display:grid;place-items:center;padding:24px;background:rgba(12,18,28,.58);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.account-lock-panel{width:min(460px,100%);padding:32px 28px;border:1px solid rgba(255,255,255,.22);border-radius:28px;background:linear-gradient(180deg,#fffdf8 0%,#fff7ec 100%);box-shadow:0 32px 80px #0f172a38;text-align:center}.account-lock-panel span{display:inline-flex;align-items:center;min-height:30px;padding:0 12px;border-radius:999px;background:#fff0e5;color:#b45309;font-size:12px;font-weight:800;letter-spacing:.08em}.account-lock-panel h2{margin:18px 0 10px;color:#18212f;font-size:clamp(26px,4vw,34px);line-height:1.15}.account-lock-panel p{margin:0;color:#5b6472;font-size:15px;line-height:1.7}.account-lock-panel button{margin-top:24px;min-width:180px;height:48px;border:none;border-radius:999px;background:linear-gradient(135deg,#f97316,#ea580c);color:#fff;font-size:15px;font-weight:700;cursor:pointer}button,a{font:inherit}a{color:inherit;text-decoration:none}button{border:0;cursor:pointer}.container{width:min(1200px,calc(100vw - 32px));margin:0 auto}.topbar{position:sticky;top:0;z-index:40;height:66px;background:#ffffff;border-bottom:1px solid #e8edf3;box-shadow:0 4px 14px #1e23300a}.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:100%;gap:28px}.nav-actions{display:flex;align-items:center;margin-left:auto}.mobile-nav-toggle,.mobile-nav-backdrop{display:none}.mobile-nav-toggle{position:relative;z-index:43;width:42px;height:42px;border-radius:12px;background:#f5f7fa}.mobile-nav-toggle span{display:block;width:18px;height:2px;margin:4px auto;border-radius:999px;background:#26303d;transition:transform .24s ease,opacity .24s ease}.brand{display:flex;align-items:center;flex:0 0 auto}.brand-avatar{display:inline-grid;place-items:center;width:44px;height:44px;border-radius:50%;color:#fff;background:linear-gradient(145deg,#243047 0%,#11151d 60%,#18d09a 61%);font-size:18px;font-weight:800}.brand-logo{display:block;height:44px;width:auto;max-width:none;border-radius:8px;object-fit:contain}.brand-logo-skeleton{display:block;width:164px;height:44px;border-radius:10px;background:linear-gradient(90deg,rgba(255,255,255,0) 0%,rgba(255,255,255,.32) 50%,rgba(255,255,255,0) 100%),linear-gradient(135deg,#eef2f7 0%,#dde5ef 100%);background-size:220px 100%,100% 100%;animation:skeleton-shimmer 1.4s ease-in-out infinite}.nav-list{display:flex;align-items:center;justify-content:flex-end;gap:34px;min-width:0;color:#4d5360;font-size:14px;white-space:nowrap}.mobile-nav-head{display:none}.nav-item{position:relative;display:inline-flex}.nav-link-group{display:inline-flex;align-items:center;gap:4px}.nav-list a,.nav-list button{color:inherit;background:transparent;line-height:66px}.nav-list a.active,.nav-list button.active{color:#10c994;font-weight:700}.nav-list button{display:inline-flex;align-items:center;gap:5px;padding:0}.submenu-toggle{justify-content:center;width:24px;min-width:24px}.auth-nav-button{max-width:132px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.user-menu-wrap{position:relative;display:inline-flex;align-items:center}.user-nav-link{display:inline-flex;align-items:center;gap:8px;max-width:196px;color:#4d5360}.user-nav-copy{display:grid;min-width:0;gap:2px}.user-nav-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.user-nav-phone{overflow:hidden;color:#8a93a3;font-size:11px;line-height:1.2;text-overflow:ellipsis;white-space:nowrap}.user-nav-skeleton{display:inline-flex;align-items:center;min-height:24px}.nav-user-avatar{display:inline-block;width:24px;height:24px;border-radius:50%;background:radial-gradient(circle at 50% 38%,#ffd9bf 0 8px,transparent 9px),linear-gradient(#594946 0 42%,transparent 43%),radial-gradient(circle at 50% 86%,#ff4d4f 0 8px,transparent 9px),#eeeeee;vertical-align:middle}.user-avatar-image{object-fit:cover;background:#eef2f5}.user-hover-card{position:absolute;top:54px;right:-44px;z-index:30;width:280px;padding:28px 24px 24px;border-radius:8px;color:#3f4652;background:#ffffff;box-shadow:0 12px 34px #1f25342e;opacity:0;pointer-events:none;transform:translateY(8px);transition:opacity .16s ease,transform .16s ease}.user-menu-wrap:hover .user-hover-card{opacity:1;pointer-events:auto;transform:translateY(0)}.user-hover-card:before{position:absolute;top:-7px;right:132px;width:14px;height:14px;background:#ffffff;box-shadow:-2px -2px 3px #1f253408;transform:rotate(45deg);content:""}.user-hover-head{display:grid;grid-template-columns:42px minmax(0,1fr);grid-template-areas:"avatar copy" "logout logout";align-items:center;gap:11px;margin-bottom:24px}.user-hover-head>.hover-avatar,.user-hover-head>.user-avatar-image{grid-area:avatar}.user-hover-copy{grid-area:copy;display:grid;min-width:0;align-content:center;gap:3px}.user-hover-head strong{overflow:hidden;color:#222936;font-size:14px;font-weight:700;text-overflow:ellipsis;white-space:nowrap}.user-hover-head small{overflow:hidden;color:#8a93a3;font-size:12px;line-height:1.2;text-overflow:ellipsis;white-space:nowrap}.user-hover-logout{grid-area:logout;justify-self:start;margin-top:4px;color:#a2a8b2;background:transparent;font-size:12px;line-height:1}.hover-avatar{display:block;width:42px;height:42px;border-radius:50%;background:radial-gradient(circle at 50% 38%,#ffd9bf 0 14px,transparent 15px),linear-gradient(#594946 0 42%,transparent 43%),radial-gradient(circle at 50% 86%,#ff4d4f 0 9px,transparent 10px),#eeeeee}.user-hover-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px 18px}.user-hover-grid a{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:30px;border-radius:15px;color:#303642;background:#f7f8fa;font-size:12px;line-height:1}.nav-caret{width:0;height:0;border-top:4px solid currentColor;border-left:4px solid transparent;border-right:4px solid transparent}.category-menu{position:absolute;top:56px;right:0;z-index:20;display:grid;min-width:148px;overflow:hidden;border:1px solid #edf0f4;border-radius:8px;background:#ffffff;box-shadow:0 14px 30px #1f253424}.category-menu a{display:block;min-height:38px;padding:0 14px;color:#4d5360;line-height:38px;font-size:13px}.category-menu a:hover{color:#10b884;background:#f2fbf7}.nav-submenu{position:absolute;top:56px;left:0;z-index:20;display:none;min-width:168px;overflow:hidden;border:1px solid #edf0f4;border-radius:8px;background:#ffffff;box-shadow:0 14px 30px #1f253424}.nav-item.submenu-open .nav-submenu{display:grid}.nav-submenu a{display:block;min-height:38px;padding:0 14px;color:#4d5360;line-height:38px;font-size:13px}.nav-submenu a:hover,.nav-submenu a.active{color:#10b884;background:#f2fbf7}.page{position:relative;flex:1;padding:22px 0 72px}.page.category-page-shell{padding-top:0;padding-bottom:54px;background:#f5f5f5}.page.personal-page-shell{padding:24px 0 210px;background:#f3f3f3}.page.home-page-shell{min-height:100vh;min-height:100svh;padding:0;overflow:hidden;background:#000000}.page.home-page-shell>.container{width:100%;max-width:none;min-height:100vh;min-height:100svh;margin:0}.page.home-page-shell .home-content-stack{width:100%;height:100vh;height:100svh;min-height:100vh;min-height:100svh}.page.home-page-shell .home-media-stage{position:relative;width:100%;height:100vh;height:100svh;min-height:100vh;min-height:100svh;overflow:hidden;background-color:#000;background-position:center center;background-repeat:no-repeat;background-size:cover}.page.home-page-shell .home-desktop-video,.page.home-page-shell .home-desktop-image,.page.home-page-shell .home-mobile-video,.page.home-page-shell .home-mobile-image{position:absolute;top:0;right:0;bottom:0;left:0;display:block;width:100%;min-width:100%;height:100%;min-height:100%;object-fit:cover;object-position:center center}.page.home-page-shell .home-mobile-video,.page.home-page-shell .home-mobile-image{display:none}.page.home-page-shell .home-video-loading{position:absolute;top:0;right:0;bottom:0;left:0;z-index:2;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:radial-gradient(circle at center,rgba(22,28,39,.22) 0%,rgba(0,0,0,.58) 72%,rgba(0,0,0,.72) 100%);pointer-events:none}.page.home-page-shell .home-video-loading-ring{width:48px;height:48px;border:3px solid rgba(255,255,255,.22);border-top-color:#fff;border-radius:50%;animation:home-video-spin .9s linear infinite}.page.home-page-shell .home-video-loading-text{color:#ffffffeb;font-size:14px;font-weight:600;letter-spacing:.08em}.site-shell.home-overlay-shell .floating-tools{z-index:52}@keyframes home-video-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media (max-width: 767px){.page.home-page-shell .home-desktop-video,.page.home-page-shell .home-desktop-image{display:none}.page.home-page-shell .home-mobile-video,.page.home-page-shell .home-mobile-image{display:block}}.page.home-page-shell .hero-grid{grid-template-columns:minmax(0,1fr) minmax(280px,320px);gap:clamp(18px,1.8vw,28px)}.page.home-page-shell .hero-banner{min-height:360px}.page.home-page-shell .hero-image{height:360px}.page.home-page-shell .study-panel{min-height:360px}.page.home-page-shell .content-section{margin-top:0}.page.home-page-shell .live-grid{grid-template-columns:repeat(auto-fit,minmax(340px,1fr))}.page.home-page-shell .promo-grid,.page.home-page-shell .course-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.hero-grid{display:grid;grid-template-columns:minmax(0,920px) 260px;gap:20px;align-items:stretch}.hero-banner{position:relative;min-height:336px;overflow:hidden;border-radius:8px;background:radial-gradient(circle at 78% 12%,rgba(255,255,255,.8) 0 13%,transparent 14%),linear-gradient(100deg,#1eb8f2 0%,#4ee1dd 54%,#c5ffe9 100%)}.hero-banner.image-banner{background:#26c4ea}.hero-image{display:block;width:100%;height:336px;object-fit:cover}.hero-banner:after{position:absolute;right:-40px;bottom:-36px;color:#ffffff47;content:"XIAOHEIKETANG";font-size:70px;font-weight:900}.hero-brand{position:absolute;top:12px;left:14px;z-index:1;color:#10243c;font-weight:900}.hero-content{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;min-height:100%;padding:48px 22px 48px 32px}.hero-content h1{max-width:420px;margin:26px 0 10px;color:#0c2147;font-size:49px;line-height:1.12;font-weight:900}.exam-pill{display:inline-block;margin:0;padding:8px 18px;border-radius:6px;color:#11264d;background:#ffe15c;font-size:22px;font-weight:900}.hero-subtitle,.hero-ribbon{display:inline-flex;align-items:center;min-height:44px;padding:0 28px;border-radius:7px;color:#fff;background:linear-gradient(90deg,#338bff,#486af2);font-size:22px;font-weight:800}.hero-ribbon{position:absolute;left:28px;bottom:25px;z-index:2}.teacher-stage{position:relative;min-height:220px}.hero-teacher{position:absolute;bottom:0;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;width:112px;height:216px;border-radius:64px 64px 18px 18px;background:linear-gradient(180deg,#ffffff 0%,#edf4ff 58%,#dfe8f5 100%);box-shadow:0 18px 32px #1b417029}.hero-teacher:before{width:58px;height:58px;margin-bottom:22px;border-radius:50%;background:linear-gradient(#1f2634 0 40%,transparent 41%),radial-gradient(circle at 50% 42%,#f2bea5 0 39%,transparent 40%);content:""}.hero-teacher span{display:grid;place-items:center;width:76px;height:78px;margin-bottom:10px;border-radius:38px 38px 14px 14px;color:#1b3152;background:#f7fbff;font-size:19px;font-weight:900}.hero-teacher small{position:absolute;right:-10px;top:72px;writing-mode:vertical-rl;padding:8px 4px;border-radius:10px;background:#ffffff;color:#34435d;font-size:12px;font-weight:700}.teacher-0{left:20px;width:128px;height:236px}.teacher-1{left:138px;height:226px}.teacher-2{left:242px;height:218px}.hero-carousel{position:relative;overflow:hidden;background:#20242d}.hero-loading-panel{position:relative;display:grid;align-content:end;min-height:100%;padding:34px;background:radial-gradient(circle at top left,rgba(255,159,67,.34),transparent 34%),linear-gradient(135deg,#1a2232 0%,#243149 52%,#111722 100%)}.hero-loading-panel:before{position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(110deg,rgba(255,255,255,0) 20%,rgba(255,255,255,.08) 42%,rgba(255,255,255,0) 58%);background-size:220% 100%;animation:skeleton-shimmer 1.6s linear infinite;content:""}.hero-loading-badge,.hero-loading-copy{position:relative;z-index:1}.hero-loading-badge{display:inline-flex;align-items:center;width:fit-content;min-height:30px;margin-bottom:16px;padding:0 14px;border:1px solid rgba(255,255,255,.18);border-radius:999px;color:#ffffffd1;background:rgba(255,255,255,.08);font-size:12px;font-weight:800;letter-spacing:.08em}.hero-loading-copy{display:grid;gap:10px;color:#fff}.hero-loading-copy strong{font-size:32px;line-height:1.2;font-weight:900}.hero-loading-copy small{max-width:520px;color:#ffffffd1;font-size:16px;line-height:1.55;font-weight:700}.hero-carousel:after{display:none}.hero-slide{position:absolute;top:0;right:0;bottom:0;left:0;display:block;opacity:0;pointer-events:none;transition:opacity .45s ease}.hero-slide.active{opacity:1;pointer-events:auto}.hero-slide img{display:block;width:100%;height:100%;object-fit:cover}.slide-shade{position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(180deg,rgba(7,15,24,.05) 30%,rgba(7,15,24,.78) 100%)}.slide-copy{position:absolute;left:18px;right:18px;bottom:40px;z-index:2;display:grid;gap:6px;color:#fff}.slide-copy strong{overflow:hidden;font-size:22px;line-height:1.2;font-weight:900;text-overflow:ellipsis;white-space:nowrap}.slide-copy small{display:-webkit-box;overflow:hidden;color:#ffffffdb;font-size:13px;line-height:1.45;font-weight:800;-webkit-box-orient:vertical;-webkit-line-clamp:2}.hero-slide-copy{left:34px;right:34px;bottom:34px}.hero-slide-copy strong{font-size:32px}.hero-slide-copy small{max-width:520px;font-size:16px}@keyframes skeleton-shimmer{0%{background-position:200% 0,0 0}to{background-position:-30% 0,0 0}}.carousel-nav{position:absolute;top:50%;z-index:3;display:grid;place-items:center;width:28px;height:38px;border-radius:6px;color:#fff;background:rgba(0,0,0,.26);font-size:28px;line-height:1;transform:translateY(-50%)}.carousel-nav.prev{left:8px}.carousel-nav.next{right:8px}.carousel-dots{position:absolute;right:14px;bottom:14px;z-index:3;display:flex;gap:6px}.carousel-dots button{width:7px;height:7px;border-radius:50%;background:rgba(255,255,255,.52)}.carousel-dots button.active{width:18px;border-radius:999px;background:#ffffff}.study-panel{display:flex;flex-direction:column;gap:14px;min-height:336px;padding:0 14px 17px;border-radius:8px;background:#ffffff}.panel-tabs{display:grid;grid-template-columns:repeat(2,1fr);margin:0 -14px;color:#555b66;font-size:13px;font-weight:700}.panel-tabs button{height:34px;background:transparent;color:inherit}.panel-tabs button.active{border-radius:0 8px 0 18px;color:#13c996;background:#edfff8}.study-list{display:grid;gap:10px;flex:1;align-content:start}.study-card{display:grid;grid-template-columns:72px minmax(0,1fr);gap:10px;align-items:center;padding:9px;border:1px solid #edf0f4;border-radius:10px;color:inherit;text-decoration:none;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease}.study-card:hover{border-color:#cbeee2;box-shadow:0 10px 20px #12cc9614;transform:translateY(-1px)}.study-card-cover{display:grid;place-items:center;width:72px;height:72px;overflow:hidden;border-radius:10px;color:#fff;background:linear-gradient(135deg,#1fcf9a 0%,#129e79 100%);font-size:24px;font-weight:800}.study-card-cover img{display:block;width:100%;height:100%;object-fit:cover}.study-card-body{display:grid;gap:5px;min-width:0}.study-card-body strong,.study-card-body p,.study-card-body small{margin:0}.study-card-body strong{overflow:hidden;color:#293241;font-size:14px;line-height:1.35;font-weight:800;text-overflow:ellipsis;white-space:nowrap}.study-card-body p,.study-card-body small{overflow:hidden;color:#7d8694;font-size:12px;line-height:1.4;text-overflow:ellipsis;white-space:nowrap}.empty-user{display:grid;flex:1;align-content:center;justify-items:center;gap:8px;color:#a0a6b0;font-size:13px}.empty-avatar{width:82px;height:86px;border-radius:40px 40px 28px 28px;background:radial-gradient(circle at 50% 24%,#c4c8cc 0 20px,transparent 21px),linear-gradient(90deg,transparent 0 25px,#c4c8cc 26px 56px,transparent 57px),radial-gradient(circle at 36% 88%,#d8dade 0 4px,transparent 5px),radial-gradient(circle at 64% 88%,#d8dade 0 4px,transparent 5px)}.primary-btn,.live-card button,.live-detail-button{display:inline-flex;align-items:center;justify-content:center;gap:3px;width:100%;height:28px;border-radius:7px;color:#fff;background:#12cc96;font-size:13px;font-weight:800;text-decoration:none}.content-section{margin-top:36px}.category-browser{min-height:862px;padding-top:27px}.category-hero{display:grid;gap:18px;margin-bottom:24px;padding:24px 26px;border:1px solid rgba(226,232,240,.9);border-radius:24px;background:radial-gradient(circle at top right,rgba(16,201,148,.18),transparent 30%),radial-gradient(circle at bottom left,rgba(59,130,246,.12),transparent 28%),linear-gradient(135deg,#ffffff 0%,#f7fbff 100%);box-shadow:0 18px 42px #1f253414}.category-hero-copy{display:grid;gap:10px}.category-hero-copy p,.category-hero-copy h1,.category-hero-copy small{margin:0}.category-hero-copy p{color:#10b884;font-size:12px;font-weight:900;letter-spacing:.12em;text-transform:uppercase}.category-hero-copy h1{color:#18212f;font-size:clamp(26px,3.2vw,34px);line-height:1.16;letter-spacing:-.02em}.category-hero-copy small{max-width:42em;color:#667085;font-size:14px;line-height:1.7}.category-hero-meta{display:flex;flex-wrap:wrap;gap:10px}.category-hero-meta span{display:inline-flex;align-items:center;min-height:34px;padding:0 14px;border-radius:999px;color:#334155;background:rgba(255,255,255,.82);box-shadow:inset 0 0 0 1px #cbd5e1bf;font-size:12px;font-weight:800}.category-filter-panel{display:grid;gap:20px;margin-bottom:28px;padding:20px 22px;border:1px solid #e6edf5;border-radius:22px;background:rgba(255,255,255,.92);box-shadow:0 16px 34px #1f25340f}.category-filter-row{display:grid;grid-template-columns:48px minmax(0,1fr);align-items:start;column-gap:18px;color:#2a2f38;font-size:15px}.category-filter-row strong{line-height:28px;font-size:16px;font-weight:800}.category-filter-links{display:flex;flex-wrap:wrap;gap:12px 16px;min-width:0}.category-filter-links a{display:inline-flex;align-items:center;min-height:36px;padding:0 14px;border-radius:16px;color:#373d48;background:#f6f8fb;line-height:1;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;white-space:nowrap}.category-filter-links a:hover{transform:translateY(-1px);box-shadow:0 10px 20px #94a3b824}.category-filter-links a.active{padding:0 22px;color:#fff;background:linear-gradient(135deg,#10c994,#09b87f);font-weight:800}.category-course-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}.section-title,.section-heading{display:flex;align-items:center;margin-bottom:18px}.section-title h2,.section-heading h2{margin:0;color:#2b2f38;font-size:22px;line-height:1.2}.section-heading{justify-content:space-between}.section-heading a{color:#a8adb6;font-size:13px;font-weight:700}.section-heading span{font-size:24px;vertical-align:-2px}.section-icon{display:inline-grid;place-items:center;width:22px;height:22px;margin-right:10px;border-radius:7px;color:#fff;font-size:12px;font-weight:900}.section-icon.play{background:#15cc97}.section-icon.play:before{content:"▶"}.section-icon.hot{border-radius:50%;background:#ff4f57}.section-icon.hot:before{content:"HOT";font-size:8px}.live-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.live-card{position:relative;display:grid;grid-template-columns:54% 46%;gap:12px;min-height:178px;padding:10px;border-radius:8px;background:#ffffff;box-shadow:0 7px 20px #1f25340a;transition:transform .18s ease,box-shadow .18s ease}.course-cover{position:relative;min-height:140px;overflow:hidden;border-radius:8px;color:#fff;background:#ff6963}.course-cover.asset-cover{background:#ffffff}.course-cover-image-frame{position:absolute;top:0;right:0;bottom:0;left:0;overflow:hidden;border-radius:inherit}.course-cover.asset-cover .course-cover-image-frame img{position:absolute;top:0;right:0;bottom:0;left:0;display:block;width:100%;height:100%;object-fit:cover;object-position:center;filter:saturate(1.02) contrast(1.02);image-rendering:-webkit-optimize-contrast;backface-visibility:hidden}.course-cover:after{position:absolute;right:-8px;bottom:-24px;color:#ffffff38;content:"26/06";font-size:52px;font-weight:900}.course-cover.asset-cover:after{display:none}.course-cover.coral{background:linear-gradient(135deg,#ff6963 0%,#ffb3a0 100%)}.course-cover.rose{background:linear-gradient(135deg,#ff626a 0%,#ffbfd4 100%)}.course-cover.blue{background:linear-gradient(135deg,#14a8ff 0%,#76e3ff 100%)}.course-cover.orange{background:linear-gradient(135deg,#ff8f45 0%,#ffcf8a 100%)}.live-card .course-cover{min-height:100%}.live-card .course-cover.asset-cover{background:#f7f8fa}.live-card .course-cover.asset-cover .course-cover-image-frame img{top:2px;right:2px;bottom:2px;left:2px;width:calc(100% - 4px);height:calc(100% - 4px);max-width:none;transform:scale(1.06);object-fit:cover;border-radius:6px}.course-cover.preview-on-hover{overflow:visible}.course-cover.preview-on-hover:hover{z-index:8}.course-cover-preview-hint{position:absolute;right:10px;bottom:10px;z-index:2;display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;color:#fff;background:rgba(18,28,44,.74);font-size:12px;font-weight:800;opacity:0;transform:translateY(4px);transition:opacity .18s ease,transform .18s ease;pointer-events:none}.course-cover-hover-preview{position:absolute;top:50%;left:50%;z-index:9;width:min(420px,42vw);padding:6px;border:1px solid #18c58f;border-radius:16px;background:rgba(255,255,255,.96);box-shadow:0 18px 38px #18c58f29;opacity:0;visibility:hidden;transform:translate(-50%,-50%) scale(.96);transition:opacity .18s ease,transform .18s ease,visibility .18s ease;pointer-events:none}.course-cover-hover-preview img{display:block;width:100%;height:auto;border-radius:10px;background:#ffffff}.course-cover.preview-on-hover:hover .course-cover-preview-hint,.course-cover.preview-on-hover:focus-within .course-cover-preview-hint{opacity:1;transform:translateY(0)}.course-cover.preview-on-hover:hover .course-cover-hover-preview,.course-cover.preview-on-hover:focus-within .course-cover-hover-preview{opacity:1;visibility:visible;transform:translate(-50%,-50%) scale(1)}.cover-brand{position:absolute;top:9px;left:10px;font-size:11px;font-weight:900}.course-cover strong{position:absolute;left:13px;right:12px;top:42px;z-index:1;font-size:22px;line-height:1.14;font-weight:900;text-shadow:0 2px 8px rgba(160,26,18,.12)}.cover-people{position:absolute;right:10px;bottom:8px;z-index:1;display:flex}.cover-people span{display:grid;place-items:center;width:36px;height:36px;margin-left:-8px;border:2px solid #ffffff;border-radius:50%;color:#334054;background:#fff4ef;font-size:12px;font-weight:800}.live-body{position:relative;display:flex;min-width:0;flex-direction:column;padding-top:2px}.live-count{position:absolute;top:-2px;right:0;padding:4px 8px;border-radius:0 8px;color:#fff;background:rgba(38,43,55,.42);font-size:11px}.live-body h2,.promo-body h3,.text-course-card h3{display:-webkit-box;overflow:hidden;margin:0;color:#262b36;font-size:15px;line-height:1.42;font-weight:800;-webkit-box-orient:vertical;-webkit-line-clamp:2}.live-body p,.text-course-card p{margin:8px 0 0;color:#8a909c;font-size:12px}.live-body strong{margin-top:14px;color:#12c896;font-size:13px}.live-detail-button{margin-top:auto;align-self:center;width:50%}.teacher-row{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:6px;margin:18px 0 10px}.teacher-mini{display:grid;justify-items:center;gap:5px;min-width:0;color:#8c93a0;font-size:10px}.teacher-mini span{display:grid;place-items:center;width:28px;height:28px;overflow:hidden;border-radius:50%;color:#445166;background:linear-gradient(145deg,#eef4fb,#d4dde8);font-size:11px;font-weight:800}.teacher-mini span img{display:block;width:100%;height:100%;object-fit:cover}.teacher-mini small{overflow:hidden;width:100%;text-align:center;text-overflow:ellipsis;white-space:nowrap}.promo-grid,.course-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}.promo-card,.text-course-card{position:relative;display:block;overflow:hidden;border-radius:8px;background:#ffffff;color:inherit;box-shadow:0 7px 20px #1f25340f;text-decoration:none;transition:transform .18s ease,box-shadow .18s ease}.live-card:hover,.promo-card:hover,.text-course-card:hover{transform:translateY(-6px);box-shadow:0 14px 30px #1f25341f}.promo-card .course-cover{min-height:158px;border-radius:8px 8px 0 0}.promo-body{position:relative;min-height:98px;padding:13px 14px 12px}.promo-title-row{display:flex;align-items:flex-start;gap:8px}.promo-title-row h3{flex:1 1 auto;min-width:0}.promo-inline-tag,.corner-tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;color:#fff;background:#ff5a5d;font-size:12px;font-weight:900;white-space:nowrap}.promo-inline-tag{flex:0 0 auto;border-radius:999px}.corner-tag{position:absolute;top:0;left:0;border-radius:0 0 8px}.price-row,.text-card-foot{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:18px}.price-row span,.text-card-foot span{color:#c3c8d0;font-size:12px}.price-row p,.text-card-foot p{display:flex;align-items:baseline;gap:9px;margin:0}del{color:#b9bec8;font-size:12px}.price-row strong,.text-card-foot strong{color:#ff4d4f;font-size:17px;font-weight:900}.text-course-card{display:flex;flex-direction:column;min-height:210px;padding:18px 14px 12px}.category-course-grid .text-course-card{min-height:250px;padding:21px 16px 14px}.category-course-grid .text-course-card h3{min-height:44px;font-size:16px;line-height:1.38}.category-course-grid .text-course-card p{margin-top:12px}.category-course-grid .text-course-card .card-teachers{gap:18px;padding-top:24px}.category-course-grid .teacher-mini span{width:42px;height:42px;font-size:13px}.category-course-grid .text-card-foot{margin-top:12px}.category-course-grid .text-card-foot strong{font-size:21px}.pagination{display:flex;justify-content:center;gap:10px;margin-top:204px}.pagination button{display:grid;place-items:center;width:30px;height:30px;border:1px solid #e3e6eb;color:#5b6470;background:#ffffff;font-size:14px}.pagination button.active{border-color:#10c994;color:#fff;background:#10c994;font-weight:800}.pagination button:disabled{color:#c0c6cf;background:#fafafa;cursor:not-allowed}.category-infinite-footer{display:flex;justify-content:center;margin-top:22px;padding-bottom:10px}.category-infinite-footer span{display:inline-flex;align-items:center;min-height:38px;padding:0 16px;border-radius:999px;color:#667085;background:rgba(255,255,255,.9);box-shadow:inset 0 0 0 1px #e2e8f0e6;font-size:12px;font-weight:800}.page.course-detail-page-shell{padding-top:0;background:#f4f4f4}.course-detail-shell{padding-top:14px}.course-detail-topband{position:relative;isolation:isolate}.course-detail-topband:before{position:absolute;top:-14px;right:50%;bottom:0;z-index:-1;width:100vw;background:#ffffff;transform:translate(50%);content:""}.course-breadcrumb{display:flex;align-items:center;gap:9px;min-height:30px;color:#8c929d;font-size:12px}.course-breadcrumb a{color:#59616d}.course-breadcrumb strong{overflow:hidden;max-width:520px;color:#7a818c;font-weight:500;text-overflow:ellipsis;white-space:nowrap}.course-detail-loading{display:grid;place-items:center;min-height:360px;border-radius:8px;color:#8d949f;background:#ffffff}.course-hero-panel{display:grid;grid-template-columns:500px minmax(0,1fr);gap:26px;align-items:start;padding:10px 0 20px;background:#ffffff}.detail-cover{min-width:0}.detail-cover img,.detail-cover .course-cover{display:block;width:500px;height:240px;border-radius:5px;object-fit:cover}.detail-cover .course-cover{min-height:240px}.detail-cover .course-cover.asset-cover img{height:240px}.course-buy-panel{display:grid;align-content:start;min-height:240px;padding:24px 26px 22px;border:1px solid #f0f2f6;border-radius:20px;background:radial-gradient(circle at top right,rgba(255,109,109,.08),transparent 32%),linear-gradient(180deg,#ffffff 0%,#fffdfa 100%);box-shadow:0 18px 42px #1e24320f}.course-buy-panel h1{margin:0;color:#303642;font-size:30px;line-height:1.28;letter-spacing:-.02em}.course-meta-line{margin:16px 0 18px;padding-bottom:18px;border-bottom:1px solid #eef1f4;color:#8e949f;font-size:14px}.course-meta-chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}.course-meta-chips span{display:inline-flex;align-items:center;min-height:32px;padding:0 12px;border-radius:999px;color:#556070;background:rgba(255,255,255,.9);box-shadow:inset 0 0 0 1px #e1e7eef2;font-size:12px;font-weight:800}.teacher-strip{border:1px solid #edf1f5;box-sizing:border-box;display:grid;grid-template-columns:28px minmax(0,1fr) auto;align-items:center;width:100%;min-height:48px;padding:0 20px 0 14px;border-radius:14px;color:#7c8694;background:linear-gradient(180deg,#fafcff 0%,#f5f8fc 100%);box-shadow:inset 0 1px #ffffffc7;font-size:12px}.teacher-strip-button{cursor:pointer;text-align:left;transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease}.teacher-strip-button:hover{border-color:#cfe0ef;box-shadow:inset 0 1px #ffffffc7,0 10px 24px #12263f14;transform:translateY(-1px)}.teacher-strip-icon{display:grid;place-items:center;width:20px;height:20px;border-radius:6px;background:linear-gradient(135deg,#ffb53d,#ff8a37);box-shadow:0 8px 14px #ffa23b38}.teacher-strip-icon:before{color:#fff;content:"课";font-size:10px;font-weight:900}.teacher-strip>span:last-of-type{overflow:hidden;color:#3a4653;font-size:14px;font-weight:700;text-overflow:ellipsis;white-space:nowrap}.teacher-strip em{overflow:hidden;max-width:190px;color:#8b95a2;font-style:normal;text-overflow:ellipsis;white-space:nowrap}.coupon-strip{box-sizing:border-box;display:flex;align-items:center;justify-content:space-between;width:100%;min-height:36px;margin-top:18px;padding:0 16px;border-radius:16px 16px 0 0;color:#fff;background:linear-gradient(90deg,#ff5f65,#ff8c71);box-shadow:0 12px 28px #ff656524;font-size:12px}.coupon-strip strong{min-width:56px;height:22px;border-radius:11px;color:#ff5e61;background:rgba(255,255,255,.86);text-align:center;line-height:22px;font-weight:800}.price-action-row{box-sizing:border-box;display:flex;align-items:center;justify-content:space-between;width:100%;min-height:88px;margin-top:18px;padding:0 22px 0 18px;border:1px solid #ffe2e2;border-radius:16px;background:linear-gradient(135deg,#fff7f7 0%,#fffdfd 100%);box-shadow:0 14px 30px #ff5a5a14}.coupon-strip+.price-action-row{margin-top:0;border-top:0;border-radius:0 0 16px 16px}.price-action-row>div{display:flex;align-items:baseline;gap:14px}.detail-price{color:#ff4d4f;font-size:42px;font-weight:800;line-height:1;letter-spacing:-.03em}.price-action-row del{color:#b2b8c1;font-size:14px}.price-action-row button{width:136px;height:46px;margin-right:0;border-radius:23px;color:#fff;background:linear-gradient(135deg,#ff5a5f,#ff6d56);box-shadow:0 14px 28px #ff5c5c3d;font-size:15px;font-weight:800;letter-spacing:.02em}.course-share-row{display:flex;align-items:center;flex-wrap:wrap;gap:9px;min-height:40px;margin-top:12px;color:#8a909b;background:#ffffff;font-size:12px}.course-share-row button{position:relative;display:inline-grid;place-items:center;width:28px;min-width:28px;height:28px;padding:0;border:1px solid transparent;border-radius:50%;color:#69717e;background:#ffffff;transition:transform .16s ease,box-shadow .16s ease,opacity .16s ease}.course-share-row button:hover{transform:translateY(-2px);box-shadow:0 7px 14px #1f25341f}.course-share-row button:before,.course-share-row button:after{position:absolute;content:""}.course-share-row button.wechat{color:#fff;border-color:#18c795;background:#18c795}.course-share-row button.wechat:before{width:15px;height:11px;border-radius:8px;background:#ffffff}.course-share-row button.wechat:after{right:6px;bottom:8px;width:5px;height:5px;border-right:2px solid #ffffff;border-bottom:2px solid #ffffff;transform:rotate(28deg)}.course-share-row button.qq{color:#fff;border-color:#2b9de8;background:#2b9de8}.course-share-row button.qq:before{width:12px;height:15px;border-radius:7px 7px 5px 5px;background:radial-gradient(circle at 4px 6px,#2b9de8 0 1px,transparent 1.5px),radial-gradient(circle at 8px 6px,#2b9de8 0 1px,transparent 1.5px),#ffffff}.course-share-row button.qq:after{bottom:5px;width:16px;height:7px;border-radius:0 0 10px 10px;background:#ffffff}.course-share-row button.qzone{color:#fff;border-color:#ffc64a;background:#ffc64a}.course-share-row button.qzone:before{width:16px;height:16px;background:#ffffff;clip-path:polygon(50% 0,61% 34%,98% 35%,68% 56%,79% 91%,50% 70%,21% 91%,32% 56%,2% 35%,39% 34%)}.course-share-row button.link{color:#12bd8d;border-color:#16c995;background:#ffffff}.course-share-row button.link:before,.course-share-row button.link:after{width:10px;height:6px;border:2px solid #12bd8d;border-radius:6px}.course-share-row button.link:before{left:6px;top:9px;transform:rotate(-35deg)}.course-share-row button.link:after{right:6px;bottom:9px;transform:rotate(-35deg)}.course-share-row em{flex:0 1 100%;min-height:18px;color:#10a87c;font-size:12px;font-style:normal}.course-content-layout{display:grid;grid-template-columns:minmax(0,880px) 300px;gap:20px;align-items:start;margin-top:24px}.course-main-card,.purchase-notice{border-radius:5px;background:#ffffff}.course-main-card{min-height:880px}.course-detail-tabs{display:grid;grid-template-columns:repeat(2,1fr);height:54px;border-bottom:1px solid #f1f2f4}.course-detail-tabs button{position:relative;color:#9aa0a9;background:transparent;font-size:15px}.course-detail-tabs button.active{color:#232936;font-weight:800}.course-detail-tabs button.active:after{position:absolute;right:calc(50% - 16px);bottom:0;left:calc(50% - 16px);height:3px;background:#10c994;content:""}.course-tab-content{padding:26px 18px 36px}.course-tab-content h2{position:relative;margin:0 0 18px;padding-left:10px;color:#333a45;font-size:14px;line-height:1.2}.course-tab-content h2:before{position:absolute;top:1px;bottom:1px;left:0;width:3px;border-radius:2px;background:#10c994;content:""}.detail-teacher-list{display:flex;flex-wrap:wrap;gap:14px;margin:0 0 28px 12px}.detail-teacher-card{display:grid;grid-template-columns:48px minmax(0,1fr);gap:12px;align-items:center;width:min(280px,100%);min-height:64px;padding:10px 12px;border:1px solid transparent;border-radius:8px;background:#f7f7f7;cursor:pointer;text-align:left;transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease}.detail-teacher-card:hover{border-color:#d8e3ed;box-shadow:0 14px 28px #12263f14;transform:translateY(-1px)}.teacher-photo{display:block;width:42px;height:42px;overflow:hidden;border-radius:50%;background:radial-gradient(circle at 50% 38%,#ffe0c6 0 14px,transparent 15px),linear-gradient(#5e4740 0 42%,transparent 43%),radial-gradient(circle at 50% 88%,#ffffff 0 10px,transparent 11px),#eeeeee}.teacher-photo img{display:block;width:100%;height:100%;object-fit:cover}.detail-teacher-card strong{display:block;color:#535a65;font-size:13px}.detail-teacher-card p{overflow:hidden;margin:6px 0 0;color:#b4bac3;font-size:11px;text-overflow:ellipsis;white-space:nowrap}.teacher-detail-modal{position:relative;width:min(520px,100%);padding:30px;border-radius:18px;background:linear-gradient(180deg,#ffffff 0%,#f8fbff 100%);box-shadow:0 24px 70px #0e121938}.teacher-detail-modal-head{display:grid;grid-template-columns:88px minmax(0,1fr);gap:18px;align-items:center}.teacher-detail-avatar{display:grid;place-items:center;width:88px;height:88px;overflow:hidden;border-radius:50%;color:#445166;background:linear-gradient(145deg,#eef4fb,#d4dde8);font-size:28px;font-weight:800}.teacher-detail-avatar img{display:block;width:100%;height:100%;object-fit:cover}.teacher-detail-modal-head p{margin:0 0 8px;color:#8b95a2;font-size:13px}.teacher-detail-modal-head h2{margin:0;color:#25303d;font-size:28px}.teacher-detail-modal-head small{display:block;margin-top:10px;color:#6e7a87;font-size:14px;line-height:1.6}.teacher-detail-modal-body{margin-top:24px;padding-top:22px;border-top:1px solid #e8eef5}.teacher-detail-modal-body h3{margin:0 0 12px;color:#25303d;font-size:16px}.teacher-detail-modal-body p{margin:0;color:#4f5d6b;font-size:14px;line-height:1.9;white-space:pre-line}.course-intro-image{display:block;width:100%;border-radius:3px}.course-intro-html{color:#333a45;font-size:15px;line-height:1.85}.course-intro-html h1,.course-intro-html h2,.course-intro-html h3,.course-intro-html p{margin:0 0 14px}.course-intro-html img{display:block;max-width:100%;height:auto;margin:12px 0;border-radius:6px}.course-intro-html ul,.course-intro-html ol{margin:0 0 14px;padding-left:22px}.course-empty-line{margin:0;padding:22px;border:1px dashed #dfe3e9;border-radius:8px;color:#9098a4;background:#fafafa;font-size:14px}.course-poster{overflow:hidden;margin:0 auto;width:min(100%,660px);padding:28px 38px 38px;color:#fff;background:linear-gradient(145deg,rgba(255,255,255,.16),transparent 28%),linear-gradient(180deg,#7c4dff 0%,#9b1fff 46%,#5c00f2 100%)}.poster-brand{display:block;color:#111827;font-size:15px;font-weight:900;text-align:center}.course-poster h3{margin:14px 0 8px;font-size:52px;line-height:1.08;text-align:center;text-shadow:0 4px 0 rgba(0,0,0,.18)}.course-poster>p{display:table;margin:0 auto 28px;padding:8px 18px;border-radius:20px;background:#5d32ff;font-size:20px;font-weight:900}.poster-benefits{display:grid;gap:12px;margin-bottom:26px;padding:26px 32px;border-radius:26px;color:#4d5360;background:#ffffff;font-size:16px;font-weight:800}.poster-benefits span:before{display:inline-grid;place-items:center;width:22px;height:22px;margin-right:12px;border:2px solid #e843d7;border-radius:50%;color:#e843d7;content:"✓";font-size:14px}.course-poster section{display:grid;gap:12px;margin-top:22px;padding:22px 26px;border-radius:18px;color:#4c5360;background:#ffffff}.course-poster h4{margin:0;color:#d941d6;font-size:22px;text-align:center}.course-poster section strong{padding:10px 16px;border-radius:9px;background:#fff2e7;color:#e78234;text-align:center}.course-poster section p{margin:0;color:#5d6470;line-height:1.8}.catalog-list{display:grid;gap:16px}.catalog-chapter-toggle{display:flex;align-items:center;justify-content:space-between;width:100%;min-height:52px;padding:0 22px;border:0;border-radius:8px;color:#2e3540;background:#f5f6f8;cursor:pointer;text-align:left;transition:background .2s ease}.catalog-chapter-toggle:hover{background:#eef1f5}.catalog-chapter-toggle strong{font-size:16px}.catalog-lesson{display:flex;align-items:center;justify-content:space-between;min-height:76px;margin:0 24px;border-bottom:1px solid #f1f2f4}.catalog-lesson:not(.disabled):hover p{color:#10b884}.catalog-lesson.disabled{cursor:default}.catalog-lesson p{margin:0 0 8px;color:#2f3540;font-size:14px}.catalog-lesson small{color:#c5c9cf;font-size:14px}.play-dot{display:inline-grid;place-items:center;width:18px;height:18px;margin-right:8px;border-radius:50%;color:#fff;background:#d1d5db;font-size:9px}.catalog-lesson em{color:#10c994;font-style:normal;font-weight:800}.catalog-lesson.material{cursor:default}.catalog-download-button{display:inline-flex;align-items:center;justify-content:center;min-width:92px;height:34px;padding:0 14px;border:1px solid rgba(16,201,148,.24);border-radius:999px;color:#10c994;background:rgba(16,201,148,.08);font-size:13px;font-weight:800}.catalog-download-button:hover{color:#0db884;background:rgba(16,201,148,.14)}.lesson-lock{display:grid;place-items:center;width:22px;height:22px;border-radius:4px;color:#fff;background:#c6c8cc;font-size:11px}.review-score-panel{display:grid;grid-template-columns:auto auto minmax(0,1fr) 70px;align-items:center;gap:14px;min-height:68px;padding:0 24px;color:#9da4ae;background:#e6fbef}.review-score-panel strong{color:#10c994;font-size:38px}.review-score-panel span,.review-stars{color:#ffc533;letter-spacing:0}.review-score-panel em{border-left:1px solid #c3e7d1;color:#b6cec0;font-size:12px;font-style:normal;text-align:center}.review-tags{display:flex;flex-wrap:wrap;gap:14px;margin:24px 0 28px}.review-tags button{min-height:30px;padding:0 17px;border-radius:15px;color:#9ba2ad;background:#f3f4f5}.review-tags button.active{color:#fff;background:#10c994}.review-item{position:relative;display:grid;grid-template-columns:52px minmax(0,1fr);gap:16px;min-height:170px;padding:18px 0 24px;border-bottom:1px solid #f0f1f3}.review-avatar{display:grid;place-items:center;width:48px;height:48px;border-radius:50%;color:#fff;background:linear-gradient(145deg,#124b8e,#111827)}.review-avatar img,.review-avatar>span{display:block;width:100%;height:100%}.review-avatar img{object-fit:cover}.review-avatar>span{display:grid;place-items:center}.review-item strong{display:block;color:#303642;font-size:14px;font-weight:500}.review-item small{display:block;margin-top:8px;color:#9da4ae;font-size:12px}.review-item p{margin:15px 0 20px;color:#202631;font-size:16px}.review-item em{display:inline-flex;align-items:center;height:28px;margin-right:10px;padding:0 14px;border-radius:14px;color:#a4aab3;background:#f4f5f6;font-style:normal}.review-stars{position:absolute;top:20px;right:0}.review-stars small{display:block;margin-top:6px;color:#9da4ae;font-size:12px;letter-spacing:0}.purchase-notice{padding:14px 18px 20px;color:#777f8c;font-size:12px;line-height:1.85}.purchase-notice h2{display:flex;align-items:center;gap:8px;margin:0 0 12px;color:#555d68;font-size:14px}.purchase-notice h2 span{display:grid;place-items:center;width:14px;height:14px;border-radius:50%;color:#fff;background:#10c994;font-size:10px}.purchase-notice p{margin:0 0 8px}.page.course-player-page-shell{min-height:100vh;padding:0;background:#111214}.container.player-container{width:100%;margin:0}.course-player-shell{min-height:100vh;color:#d7d8dc;background:#0b0b0c}.player-topbar{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:28px;height:58px;padding:0 28px;color:#a9abb2;background:#252525}.player-topbar strong{overflow:hidden;color:#bfc1c7;font-size:15px;font-weight:600;text-overflow:ellipsis;white-space:nowrap}.player-back{display:inline-flex;align-items:center;color:#c6c7cc;font-size:14px}.player-actions{display:flex;align-items:center;gap:12px;color:#a7a9b0;font-size:14px;white-space:nowrap}.player-user-link{display:inline-flex;align-items:center;gap:12px;color:inherit;text-decoration:none}.player-actions button{color:inherit;background:transparent}.player-avatar{width:32px;height:32px;border-radius:50%;background:radial-gradient(circle at 50% 36%,#ffd9bf 0 10px,transparent 11px),linear-gradient(#594946 0 42%,transparent 43%),radial-gradient(circle at 50% 86%,#ff4d4f 0 9px,transparent 10px),#eeeeee}.player-loading{display:grid;place-items:center;height:calc(100vh - 58px);color:#9ca0aa;background:#060606}.player-study-layout{display:grid;grid-template-columns:minmax(0,1fr) 430px;min-height:calc(100vh - 58px)}.player-study-layout.chat-expanded-layout{grid-template-columns:minmax(0,1fr) minmax(360px,var(--player-live-chat-expanded-width, 430px))}.player-video-pane{display:grid;grid-template-rows:minmax(0,1fr) auto;min-width:0;background:#000000}.tc-player-stage{position:relative;display:grid;place-items:center;min-height:calc(100vh - 58px);background:#000000}.tc-player-video,.live-player-iframe,.tc-player-stage .tcp-video,.tc-player-stage .tcplayer{display:block;width:100%;height:100%;min-height:calc(100vh - 58px);background:#000000;object-fit:contain}.live-player-iframe{border:0}.player-empty{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;width:100%;height:100%;min-height:calc(100vh - 58px);color:#9da1aa;background:#000000}.player-empty img{display:block;max-width:84%;max-height:74vh;object-fit:contain}.player-empty p{margin:0;color:#9da1aa;font-size:15px;line-height:1.6;text-align:center}.player-empty-live{gap:20px}.player-empty-live p{max-width:80%;color:#f4f6fb;font-size:30px;font-weight:700;line-height:1.4;letter-spacing:.04em}.player-empty .course-action-link{min-width:136px}.player-inline-note{margin:0;padding:12px 18px;color:#f4c46b;font-size:13px;line-height:1.6;background:#111111;border-top:1px solid rgba(244,196,107,.18)}.player-access-gate{display:grid;justify-items:center;gap:16px;width:100%;min-height:calc(100vh - 58px);padding:42px 28px;text-align:center;background:radial-gradient(circle at top,rgba(19,212,157,.16),transparent 48%),linear-gradient(160deg,rgba(31,34,41,.98),rgba(22,24,29,.98))}.player-access-gate strong{color:#fff;font-size:28px;font-weight:700}.player-access-gate p{max-width:420px;margin:0;color:#b3b8c2;font-size:15px;line-height:1.7}.player-access-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}.player-access-actions .course-action-link{min-width:156px;border:0;font:inherit;cursor:pointer}.player-access-back{display:inline-flex;align-items:center;justify-content:center;min-width:132px;height:42px;padding:0 20px;border:1px solid rgba(255,255,255,.14);border-radius:999px;color:#d7dbe2;background:rgba(255,255,255,.04)}.player-catalog-panel{position:relative;display:grid;grid-template-rows:auto minmax(0,1fr);height:calc(100vh - 58px);min-width:0;overflow:hidden;border-left:1px solid #2c2d31;background:#1b1c1f}.player-catalog-panel.with-live-chat{--player-chat-height: clamp(280px, 42vh, 460px);grid-template-rows:auto minmax(0,1fr) minmax(0,var(--player-chat-height))}.player-catalog-panel.with-live-chat.chat-expanded{--player-chat-height: clamp(380px, 58vh, 720px)}.player-catalog-panel.with-live-chat.chat-expanded .player-live-chat{width:100%;min-width:0;height:auto;border-top:1px solid #2c2f38;box-shadow:none}.player-tabs{display:grid;grid-template-columns:repeat(4,1fr);height:45px;border-bottom:1px solid #313237}.player-tabs button{position:relative;color:#8f929b;background:transparent;font-size:15px}.player-tabs button.active{color:#fff;font-weight:700}.player-tabs button.active:after{position:absolute;right:calc(50% - 17px);bottom:0;left:calc(50% - 17px);height:2px;background:#10d49b;content:""}.player-filter-row{display:flex;align-items:center;gap:14px;min-height:64px;padding:12px 20px;border-bottom:1px solid #313237;color:#92959e;font-size:16px}.player-filter-row button{min-width:84px;height:40px;padding:0 18px;border:1px solid transparent;border-radius:999px;color:inherit;background:rgba(255,255,255,.04);font-size:16px;font-weight:700;letter-spacing:.02em;white-space:nowrap}.player-filter-row button.active{color:#fff;border-color:#13d49d70;background:rgba(19,212,157,.18);box-shadow:0 10px 24px #13d49d29}.player-catalog-scroll{min-height:0;overflow-x:hidden;overflow-y:auto;padding:0 14px 18px}.player-catalog-panel.with-live-chat .player-catalog-scroll{border-bottom:1px solid #313237}.player-live-chat{position:relative;display:grid;grid-template-rows:auto minmax(0,1fr) auto;min-height:0;overflow:hidden;background:linear-gradient(180deg,rgba(9,12,18,.98),rgba(14,17,24,.98))}.player-live-chat-resize{position:absolute;top:0;bottom:0;left:-6px;z-index:2;width:12px;padding:0;border:0;cursor:ew-resize;touch-action:none;background:transparent}.player-live-chat-resize:after{position:absolute;top:50%;left:5px;width:2px;height:56px;border-radius:999px;background:rgba(19,212,157,.56);transform:translateY(-50%);content:""}.player-live-chat-resize:hover:after,.player-live-chat.resizing .player-live-chat-resize:after{background:#10d49b}.player-live-chat.resizing{-webkit-user-select:none;user-select:none}.player-live-chat-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding:16px 18px 12px;border-bottom:1px solid #2d3038}.player-live-chat-head strong{display:block;color:#f5f7fa;font-size:15px;font-weight:700}.player-live-chat-head-side{display:grid;justify-items:end;gap:8px;flex:0 0 auto}.player-live-chat-head small,.player-live-chat-head span{color:#9297a3;font-size:12px;line-height:1.6}.player-live-chat-head span{font-weight:700}.player-live-chat-toggle{min-width:88px;height:32px;padding:0 14px;border:1px solid rgba(19,212,157,.34);border-radius:999px;color:#dffcf2;background:rgba(19,212,157,.12);font-size:12px;font-weight:700;white-space:nowrap}.player-live-chat-toggle:hover{background:rgba(19,212,157,.2)}.player-live-chat-list{overflow:auto;display:grid;align-content:start;gap:10px;padding:14px 16px}.player-live-chat-item{display:grid;gap:8px;padding:12px 12px 11px;border:1px solid #2a2e36;border-radius:10px;background:rgba(255,255,255,.03)}.player-live-chat-item div{display:flex;align-items:center;justify-content:space-between;gap:12px}.player-live-chat-item strong{color:#fff;font-size:13px;font-weight:700}.player-live-chat-item small{color:#8d93a0;font-size:12px}.player-live-chat-item p{margin:0;color:#d2d7df;font-size:13px;line-height:1.7;white-space:pre-wrap;word-break:break-word}.player-live-chat-form{display:grid;gap:10px;padding:14px 16px 16px;border-top:1px solid #2d3038}.player-live-chat-form textarea{width:100%;min-height:92px;resize:vertical;border:1px solid #30353e;border-radius:10px;padding:12px 14px;color:#f4f6f9;background:rgba(255,255,255,.04);font:inherit;line-height:1.6}.player-live-chat-form textarea:disabled{color:#7f8590}.player-live-chat-actions{display:flex;align-items:center;justify-content:space-between;gap:12px}.player-live-chat-actions span{color:#8d93a0;font-size:12px;line-height:1.6}.player-live-chat-actions .course-action-link{min-width:116px;border:0;cursor:pointer}.player-chapter{margin-bottom:18px}.player-chapter h2{margin:18px 0 12px;color:#fff;font-size:16px;font-weight:600}.player-lesson{display:grid;gap:14px;min-height:82px;margin-bottom:10px;padding:15px 14px;border:1px solid transparent;border-radius:6px;color:#a4a7af;background:#292a2f}.player-lesson:not(.disabled):hover,.player-lesson.active{border-color:#10d49b5c;color:#13d49d;background:#202326}.player-lesson.disabled{opacity:.55;cursor:default}.player-lesson strong{overflow:hidden;color:inherit;font-size:14px;font-weight:600;text-overflow:ellipsis;white-space:nowrap}.player-lesson span{display:flex;align-items:center;justify-content:space-between;color:#8e929b;font-size:13px}.player-lesson-actions{display:flex;align-items:center;justify-content:space-between;gap:12px}.player-lesson small:before{display:inline-grid;place-items:center;width:15px;height:15px;margin-right:6px;border:1px solid currentColor;border-radius:50%;content:"▶";font-size:7px;vertical-align:1px}.player-lesson em{color:inherit;font-style:normal}.player-lesson.material{cursor:default}.player-lesson-download{display:inline-flex;align-items:center;justify-content:center;min-width:54px;height:28px;padding:0 12px;border:1px solid rgba(19,212,157,.42);border-radius:999px;color:#13d49d;background:rgba(19,212,157,.1);font-size:12px;font-weight:700}.player-lesson-download:hover{color:#0fe6a5;background:rgba(19,212,157,.16)}.player-empty-list{margin:40px 0;color:#858995;text-align:center}.auth-modal-layer{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;display:grid;box-sizing:border-box;place-items:center;padding:24px;background:rgba(14,18,25,.45)}.auth-modal{position:relative;box-sizing:border-box;width:min(888px,100%);max-width:100%;max-height:calc(100vh - 48px);overflow:auto;padding:30px;border-radius:8px;background:#ffffff;box-shadow:0 24px 70px #0e121938}.download-modal{width:min(420px,100%);padding:36px 30px 30px}.download-modal-body{display:grid;justify-items:center;text-align:center}.download-modal-body h2{margin:0;color:#2f3542;font-size:28px}.download-modal-body p{margin:12px 0 0;color:#7f8793;font-size:14px}.download-modal-qr{margin-top:24px;padding:16px;border:1px solid #eef1f4;border-radius:18px;background:linear-gradient(180deg,#ffffff 0%,#f9fbfd 100%);box-shadow:0 16px 30px #13203614}.download-modal-qr img{display:block;width:min(240px,100%);border-radius:12px}.auth-close{position:absolute;top:14px;right:16px;width:30px;height:30px;color:#8b929c;background:transparent;font-size:24px;line-height:1}.auth-tabs{display:grid;grid-template-columns:repeat(2,1fr);width:240px;margin:0 auto 28px;border-bottom:1px solid #eef0f3}.auth-tabs button{height:42px;color:#626a75;background:transparent;font-size:17px;font-weight:800}.auth-tabs button.active{color:#10c994;box-shadow:inset 0 -2px #10c994}.auth-form{display:grid;gap:18px;width:min(360px,100%);margin:0 auto}.auth-form label{display:grid;gap:8px;color:#353b46;font-size:14px;font-weight:700}.auth-form input{width:100%;height:42px;padding:0 13px;border:1px solid #dfe4ea;border-radius:6px;color:#26303d;font-size:16px;outline:0}.auth-form input:focus{border-color:#10c994;box-shadow:0 0 0 3px #10c9941f}.sms-code-row{display:grid;grid-template-columns:minmax(0,1fr) 106px;gap:10px}.sms-code-row button{height:42px;border-radius:6px;color:#0f8f6d;background:#e9fbf5;font-size:13px;font-weight:800}.sms-code-row button:disabled{color:#7b8794;cursor:not-allowed}.auth-error{margin:0;color:#ff4d4f;font-size:13px}.auth-submit{height:42px;border-radius:6px;color:#fff;background:#10c994;font-size:15px;font-weight:800}.auth-submit:disabled{opacity:.65;cursor:not-allowed}.auth-submit.secondary{display:block;width:180px;margin:24px auto 0;color:#626a75;background:#f1f4f7}.profile-panel{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:64px}.profile-section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.profile-section-head h2{margin:0;color:#323843;font-size:16px;font-weight:500}.profile-section-head button{min-width:56px;height:30px;border-radius:5px;color:#fff;background:#10c994;font-size:13px}.profile-list{display:grid;gap:30px;margin:0;color:#343b47;font-size:14px}.profile-list.compact{gap:42px;padding-top:9px}.profile-list div{display:grid;grid-template-columns:76px minmax(0,1fr);align-items:center}.profile-list dt,.profile-list dd{margin:0}.profile-list .muted{color:#c2c7cf}.profile-avatar{display:block;width:68px;height:68px;border-radius:50%;background:radial-gradient(circle at 50% 38%,#ffd9bf 0 23px,transparent 24px),linear-gradient(#5a4643 0 42%,transparent 43%),radial-gradient(circle at 50% 84%,#ff4d4f 0 13px,transparent 14px),#eeeeee}.personal-layout{display:grid;grid-template-columns:288px minmax(0,860px);justify-content:center;gap:24px;align-items:start}.personal-sidebar,.personal-content,.order-card,.login-required{border-radius:6px;background:#ffffff}.personal-sidebar{overflow:hidden;position:sticky;top:96px;border:1px solid #e6f0ee;border-radius:28px;box-shadow:0 24px 48px #11233414;background:radial-gradient(circle at top left,rgba(22,201,147,.14),transparent 42%),linear-gradient(180deg,#ffffff 0%,#fbfefd 100%)}.personal-sidebar-body{display:grid}.personal-mobile-toolbar,.personal-drawer-backdrop,.personal-drawer-head{display:none}.personal-summary{display:grid;grid-template-columns:72px minmax(0,1fr);gap:16px;min-height:126px;padding:22px 22px 18px;background:radial-gradient(circle at top left,rgba(44,211,158,.24),transparent 36%),linear-gradient(135deg,rgba(231,255,248,.98) 0%,rgba(247,255,252,.98) 58%,#ffffff 100%)}.personal-avatar{width:64px;height:64px;border:4px solid rgba(255,255,255,.76);box-shadow:0 16px 30px #1229391f}.personal-summary strong{display:block;overflow:hidden;margin-top:8px;color:#18303a;font-size:18px;font-weight:800;text-overflow:ellipsis;white-space:nowrap}.personal-summary p{display:-webkit-box;overflow:hidden;margin:10px 0 0;color:#6b7b86;font-size:12px;line-height:1.6;-webkit-box-orient:vertical;-webkit-line-clamp:2}.study-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:0 18px 16px;padding-bottom:4px;border-bottom:0;text-align:center}.study-stats div{padding:16px 8px 14px;border:1px solid #e8f0ee;border-radius:18px;background:linear-gradient(180deg,#ffffff 0%,#f7fbfa 100%);box-shadow:0 12px 28px #182e440f}.study-stats strong{display:block;color:#17333f;font-size:24px;font-weight:800;line-height:1.2}.study-stats span{display:block;margin-top:7px;color:#6f7f8a;font-size:12px;font-weight:600;white-space:nowrap}.personal-menu{display:grid;gap:6px;padding:6px 12px 14px}.personal-menu a{position:relative;display:grid;grid-template-columns:18px minmax(0,1fr) auto;gap:10px;align-items:center;min-height:46px;padding:0 16px 0 18px;border-radius:16px;color:#51606c;font-size:14px;font-weight:600;transition:background-color .2s ease,color .2s ease,transform .2s ease}.personal-menu a:hover{color:#0f9678;background:#f3fcf8;transform:translate(2px)}.personal-menu a.active{color:#0f9f7f;background:linear-gradient(90deg,rgba(16,201,148,.16),rgba(16,201,148,.04));font-weight:800;box-shadow:inset 0 0 0 1px #10c9941f}.personal-menu a.active:before{position:absolute;left:10px;width:4px;height:24px;border-radius:999px;background:#10c994;content:""}.personal-menu em{justify-self:end;min-width:24px;padding:1px 7px;border:1px solid #ffd5b5;border-radius:9px;color:#f29b62;font-size:10px;font-style:normal;font-weight:400}.menu-icon{position:relative;width:12px;height:12px;border:1px solid #b9c7d1;border-radius:4px;color:#9aa7b3;transition:border-color .2s ease,color .2s ease,background-color .2s ease}.user-hover-grid .menu-icon{border-color:#38a4ff}.personal-menu a:hover .menu-icon,.personal-menu a.active .menu-icon{border-color:#7fdac0;color:#10a97e;background:rgba(255,255,255,.82)}.menu-icon.book:before,.menu-icon.order:before,.menu-icon.calendar:before,.menu-icon.message:before,.menu-icon.clock:before,.menu-icon.coupon:before,.menu-icon.ticket:before,.menu-icon.feedback:before,.menu-icon.mail:before,.menu-icon.user:before{position:absolute;top:3px;right:3px;bottom:3px;left:3px;border-radius:50%;background:currentColor;opacity:.45;content:""}.personal-content{display:grid;gap:18px;align-content:start;background:transparent}.personal-tabs,.personal-card,.order-tabs,.order-card{border-radius:6px;background:#ffffff}.personal-tabs{display:flex;align-items:center;gap:12px;min-height:72px;padding:16px;border:1px solid #edf3f1;border-radius:26px;box-shadow:0 16px 40px #12263f0f;background:linear-gradient(180deg,rgba(255,255,255,.99) 0%,rgba(248,251,252,.99) 100%)}.personal-tabs button{position:relative;min-width:104px;height:40px;padding:0 18px;border-radius:999px;color:#758391;background:transparent;font-size:15px;font-weight:700;transition:background-color .2s ease,color .2s ease,box-shadow .2s ease}.personal-tabs button.active{color:#0f9f7f;background:#e9fbf5;font-weight:800;box-shadow:inset 0 0 0 1px #10c99424}.personal-tabs button.active:after{content:none}.personal-card{min-height:520px;border:1px solid #edf3f1;border-radius:28px;box-shadow:0 20px 48px #12263f0f;background:linear-gradient(180deg,#ffffff 0%,#fcfefe 100%)}.empty-state-card{display:grid;place-items:center;align-content:center;min-height:620px;color:#94a0ab;border:1px dashed #d7e6e1;background:radial-gradient(circle at top center,rgba(16,201,148,.08),transparent 32%),linear-gradient(180deg,#ffffff 0%,#fbfefd 100%);font-size:16px}.empty-state-card p{margin:20px 0 0}.empty-illustration{position:relative;width:178px;height:126px;opacity:.75}.empty-illustration:before{position:absolute;left:44px;bottom:14px;width:74px;height:18px;border-radius:50%;background:#e1e1e1;content:""}.empty-illustration:after{position:absolute;left:70px;bottom:28px;width:50px;height:78px;border-radius:28px 28px 14px 14px;background:radial-gradient(circle at 50% 23%,#bfc1c3 0 18px,transparent 19px),linear-gradient(#bfc1c3 0 100%);content:""}.empty-illustration.course{background:linear-gradient(84deg,transparent 0 124px,#c5c6c8 125px 138px,transparent 139px),linear-gradient(90deg,transparent 0 104px,#e3e3e3 105px 128px,transparent 129px)}.empty-illustration.message:after{left:66px;width:42px;height:86px;border-radius:26px 26px 10px 10px}.profile-data-card{min-height:620px;padding:28px 32px}.feedback-form{min-height:860px;padding:30px 30px 46px}.feedback-form h2,.feedback-field span{display:block;margin:0 0 17px;color:#2f3642;font-size:16px;font-weight:800}.feedback-type-row{display:flex;flex-wrap:wrap;gap:24px;margin-bottom:26px}.feedback-type-row button{min-width:96px;height:32px;border-radius:16px;color:#343b46;background:#f2f2f2;font-size:14px}.feedback-type-row button.active{color:#fff;background:#10c994}.feedback-field{position:relative;display:block;margin-top:22px}.feedback-field textarea{display:block;width:456px;height:86px;padding:13px 14px;resize:none}.feedback-field input{width:220px;height:36px;padding:0 12px}.feedback-field textarea,.feedback-field input{box-sizing:border-box;max-width:100%;border:1px solid #d7d9de;border-radius:5px;color:#343b46;outline:0}.feedback-field textarea::placeholder,.feedback-field input::placeholder{color:#c4c8cf}.feedback-field em{position:absolute;right:calc(100% - 446px);bottom:10px;color:#6d737e;font-size:13px;font-style:normal}.photo-upload{display:grid;justify-items:center;align-content:center;gap:8px;width:88px;height:88px;margin:16px 0 27px;color:#9da3ac;background:#f7f7f7;font-size:13px}.photo-upload span{width:30px;height:24px;border:2px solid #9da3ac;border-radius:4px}.photo-upload span:before{display:block;width:8px;height:8px;margin:6px auto 0;border:2px solid #9da3ac;border-radius:50%;content:""}.feedback-submit{box-sizing:border-box;max-width:100%;width:220px;height:38px;margin-top:30px;border-radius:19px;color:#fff;background:#10c994;font-size:15px;font-weight:800}.order-tabs{position:relative;padding:0 16px 12px}.order-tab-head{display:flex;gap:38px;height:43px;border-bottom:1px solid #eef0f3}.order-tab-head button{position:relative;color:#727985;background:transparent;font-size:14px;font-weight:800}.order-tab-head button.active{color:#202631}.order-tab-head button.active:after{position:absolute;right:0;bottom:-1px;left:0;height:2px;background:#10c994;content:""}.history-order{position:absolute;top:13px;right:18px;color:#454c57;font-size:12px;font-weight:800}.history-order:before{margin-right:5px;color:#a8aeb7;content:"◷"}.order-filter-row{display:flex;flex-wrap:wrap;gap:10px 16px;padding-top:12px}.order-filter-row button{min-width:76px;height:26px;border-radius:13px;color:#aaaeb5;background:#f4f4f4;font-size:12px}.order-filter-row button.active{color:#fff;background:#10c994}.order-card{--order-columns: minmax(0, 1fr) 110px 110px 180px;--order-column-gap: 16px;min-height:490px;padding:0 16px}.order-table-head{display:grid;grid-template-columns:var(--order-columns);column-gap:var(--order-column-gap);height:45px;align-items:center;border-bottom:1px solid #f0f1f3;color:#999fa9;font-size:12px;text-align:center}.order-table-head span{display:flex;align-items:center;justify-content:center;height:100%}.order-table-head span:first-child{justify-content:flex-start;text-align:left}.order-table-head span:last-child{justify-content:flex-end;padding-right:28px;text-align:right}.empty-orders{margin:318px 0 0;color:#b7bcc5;text-align:center;font-size:14px}.personal-inline-error,.personal-inline-tip,.order-feedback{margin:0;padding:12px 16px;border-radius:6px;font-size:13px}.personal-inline-error,.order-feedback{color:#c0392b;background:#fff1ee}.personal-inline-tip{color:#65707c;background:#f5f7fa}.course-list-card,.redeem-list-card,.redeem-form-card,.message-list-card,.profile-workspace,.feedback-record-list,.order-list-card{min-height:320px;padding:20px 22px}.redeem-form-card{display:grid;gap:14px;min-height:0;margin-bottom:18px}.redeem-form-card .feedback-submit{justify-self:flex-start}.owned-course-row,.redeem-row,.message-row,.feedback-record-row,.order-row,.address-row{display:grid;gap:16px;align-items:center;padding:16px 0;border-bottom:1px solid #eef1f4}.owned-course-row:last-child,.redeem-row:last-child,.message-row:last-child,.feedback-record-row:last-child,.order-row:last-child,.address-row:last-child{border-bottom:0}.owned-course-row{grid-template-columns:148px minmax(0,1fr) 190px auto;gap:20px;padding:20px;margin-bottom:18px;border:1px solid #e8f1ef;border-radius:24px;background:linear-gradient(135deg,#ffffff 0%,#fbfefd 56%,#f3fbf8 100%);box-shadow:0 16px 36px #12283d0d;border-bottom:0}.owned-course-cover,.order-course-cell img{display:grid;place-items:center;width:148px;height:96px;overflow:hidden;border-radius:20px;background:linear-gradient(135deg,#eef7f4 0%,#f8fcfb 100%);color:#8490a0;font-size:18px;font-weight:800;box-shadow:inset 0 0 0 1px #e3eeebe6}.owned-course-cover img,.order-course-cell img{width:100%;height:100%;object-fit:cover}.owned-course-body strong,.message-row strong,.address-row strong,.feedback-record-row strong,.order-course-cell strong{display:block;color:#25303d;font-size:18px}.owned-course-body p,.message-row p,.feedback-record-row p,.order-course-cell small,.address-row p{margin:8px 0 0;color:#66707c;line-height:1.6}.owned-course-body strong{display:-webkit-box;overflow:hidden;line-height:1.45;-webkit-box-orient:vertical;-webkit-line-clamp:2}.owned-course-facts{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:12px;color:#5e6b77;font-size:14px;font-weight:600}.owned-course-facts span{display:inline-flex;align-items:center;gap:8px}.owned-course-facts span:before{width:6px;height:6px;border-radius:50%;background:#18c895;box-shadow:0 0 0 4px #18c8951f;content:""}.owned-course-body small,.message-row small,.feedback-record-row small,.address-row small,.order-status-cell small,.order-money-cell small{display:block;margin-top:6px;color:#97a0ab}.owned-course-meta,.order-money-cell,.order-status-cell{text-align:center}.owned-course-meta{display:grid;align-content:center;justify-items:center;gap:10px;min-height:112px;padding:18px 16px;border:1px solid #d2ece1;border-radius:22px;background:linear-gradient(180deg,#ecfff7 0%,#fbfffd 100%)}.owned-course-meta span,.order-status-cell strong{display:block;color:#10c994;font-weight:800}.owned-course-meta span{padding:6px 12px;border-radius:999px;background:#ffffff;box-shadow:0 8px 20px #10a97e14}.owned-course-meta strong{color:#23323d;font-size:15px;line-height:1.5;word-break:break-all}.message-tools{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;color:#67717d}.message-tools button,.secondary-btn,.profile-form-actions button,.row-actions button,.row-actions a{display:inline-flex;align-items:center;justify-content:center;min-width:88px;height:34px;padding:0 16px;border-radius:17px;background:#10c994;color:#fff;font-size:13px;font-weight:800;text-align:center}.row-actions{display:flex;min-height:96px;flex-direction:column;align-items:flex-end;justify-content:center;gap:10px}.order-waiting-text{color:#65707c;font-size:13px;font-weight:700}.secondary-btn,.row-actions button:nth-child(2),.row-actions a{background:#eef7f4;color:#10a97e}.course-action-link{display:inline-flex;align-items:center;justify-content:center;min-width:112px;height:42px;padding:0 22px;border-radius:999px;background:linear-gradient(135deg,#1ad09c 0%,#10a97e 100%)!important;color:#fff!important;box-shadow:0 14px 28px #10a97e38}.owned-course-card:last-child{margin-bottom:0}.message-row{grid-template-columns:minmax(0,1fr) auto}.redeem-row{grid-template-columns:minmax(0,1fr) 240px;gap:20px;padding:22px 4px}.redeem-main{min-width:0}.redeem-code-head{display:flex;flex-wrap:wrap;gap:10px 12px;align-items:center}.redeem-code-head strong{color:#20303b;font-size:22px;letter-spacing:.04em}.redeem-main p{margin:10px 0 0;color:#687481;line-height:1.7}.redeem-main small{display:block;margin-top:8px;color:#97a0ab}.redeem-status{display:inline-flex;align-items:center;justify-content:center;min-width:76px;height:30px;padding:0 12px;border-radius:999px;font-size:12px;font-weight:800}.redeem-status.active,.redeem-status.used{color:#0ea271;background:#e8fbf4}.redeem-status.disabled{color:#8a94a0;background:#f2f5f7}.redeem-meta{display:grid;align-content:center;gap:10px;padding:16px 18px;border:1px solid #e6f0ee;border-radius:20px;background:linear-gradient(180deg,#fbfffd 0%,#f4fbf8 100%)}.redeem-meta span{color:#50606c;font-size:13px;line-height:1.6}.message-row.unread{border-radius:8px;background:#fbfffd}.profile-workspace{padding:26px 30px;border-radius:22px;background:linear-gradient(180deg,#fdfefe 0%,#f7fbff 100%);box-shadow:inset 0 1px #ffffffeb}.profile-edit-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 16px;align-items:start}.profile-edit-form label,.order-confirm-price{display:grid;gap:8px}.profile-edit-form label span,.order-payment-list>span{color:#25303d;font-size:14px;font-weight:800}.profile-edit-form label.wide,.switch-row,.profile-form-actions{grid-column:1 / -1}.profile-edit-form label{min-width:0}.profile-edit-form input,.profile-edit-form select,.profile-edit-form textarea{width:100%;min-height:42px;padding:0 12px;border:1px solid #d9dee5;border-radius:8px;outline:0;color:#28313c;background:#ffffff}.profile-edit-form textarea{min-height:120px;padding:12px;resize:vertical}.profile-avatar-editor>div{display:flex;align-items:center;gap:14px}.avatar-preview-image{display:block;width:68px;height:68px;flex-shrink:0;border-radius:50%;object-fit:cover}.profile-avatar-editor input,.photo-upload input{display:none}.profile-avatar-editor button{min-width:98px;height:36px;border-radius:18px;background:#eef7f4;color:#10a97e;font-size:13px;font-weight:800}.profile-form-actions{display:flex;justify-content:flex-end;gap:10px}.switch-row{display:flex;align-items:center;justify-content:space-between}.switch-row input{width:auto;min-height:auto}.address-workspace{display:grid;gap:26px}.address-list{display:grid}.feedback-image-list{display:flex;flex-wrap:wrap;gap:12px;margin-top:10px}.feedback-image-item{position:relative}.feedback-image-item img{display:block;width:88px;height:88px;border-radius:8px;object-fit:cover}.feedback-image-item button{position:absolute;right:4px;bottom:4px;min-width:44px;height:24px;border-radius:12px;background:rgba(17,24,39,.72);color:#fff;font-size:12px}.feedback-record-row{grid-template-columns:minmax(0,1fr) 180px}.order-row{grid-template-columns:var(--order-columns);column-gap:var(--order-column-gap);align-items:stretch}.order-course-cell{display:grid;grid-template-columns:108px minmax(0,1fr);gap:14px;align-items:center;min-height:96px}.order-course-cell small{margin-top:4px}.order-money-cell,.order-status-cell{display:flex;min-height:96px;flex-direction:column;align-items:center;justify-content:center}.order-money-cell strong{color:#ff6b2c}.order-confirm-head h2{margin:0;color:#202733}.order-modal{box-sizing:border-box;width:min(520px,100%);max-width:100%;margin:0 auto}.order-confirm-head p{margin:10px 0 0;color:#67717d}.order-confirm-card{display:grid;gap:14px;margin-top:18px}.order-confirm-price{padding:12px 14px;border-radius:8px;background:#f5f8fb}.order-confirm-price.total strong{color:#ff6b2c;font-size:24px}.order-payment-list{display:grid;gap:10px}.order-payment-list button{display:grid;justify-items:start;gap:4px;padding:12px 14px;border:1px solid #d9e2ea;border-radius:8px;background:#ffffff;text-align:left}.order-payment-list button.active{border-color:#10c994;background:#effdf8}.order-payment-list strong{color:#24303c}.order-payment-list small{color:#88919d}.wechat-pay-modal{width:min(460px,100%)}.wechat-pay-qr{display:grid;place-items:center;min-height:276px;padding:18px;border:1px solid #e4ebf2;border-radius:18px;background:linear-gradient(180deg,#ffffff 0%,#f7fbff 100%)}.wechat-pay-qr svg{display:block;width:min(240px,100%);height:auto}.wechat-pay-tip{margin:0;color:#4c5866;text-align:center;line-height:1.7}.wechat-pay-meta{display:grid;gap:6px;color:#7a8490;font-size:13px;text-align:center}.wechat-pay-actions{display:grid;gap:10px}.wechat-pay-actions .auth-submit.secondary,.wechat-pay-actions .auth-submit{width:100%;margin:0}.login-required{width:min(420px,100%);margin:64px auto;padding:36px;text-align:center}.login-required h1{margin:0;color:#26303d;font-size:24px}.login-required p{margin:14px 0 24px;color:#8b929d}.login-required button{width:140px;height:38px;border-radius:6px;color:#fff;background:#10c994;font-weight:800}.text-course-card .corner-tag{left:auto;right:0;border-radius:0 0 0 8px;background:#18c895}.text-course-card .card-teachers{display:flex;gap:14px;margin-top:auto;padding-top:6px;padding-bottom:1px}.text-card-foot{margin-top:2px;padding-top:12px;border-top:1px solid #f0f1f4}.text-card-foot strong{color:#14c996}.side-tabs{position:fixed;top:337px;left:max(16px,calc((100vw - 1200px)/2 - 248px));z-index:5;display:grid;overflow:hidden;border-radius:8px;background:#ffffff;box-shadow:0 10px 26px #1e243214}.side-tabs a{display:grid;place-items:center;width:72px;height:42px;color:#68707d;font-size:13px;border-bottom:1px solid #f1f2f5}.side-tabs a:last-child{border-bottom:0}.page.home-page-shell .side-tabs{top:354px;left:max(16px,calc((100vw - var(--home-content-max-width)) / 2 - 92px))}.floating-tools{position:fixed;right:16px;top:338px;z-index:8;overflow:hidden;border-radius:4px;background:#ffffff;box-shadow:0 8px 20px #1e243214}.floating-tools button{display:grid;place-items:center;width:36px;height:57px;color:#58606c;background:#ffffff;font-size:11px;border-bottom:1px solid #eef0f3}.floating-tools button:last-child{border-bottom:0}.tool-icon{position:relative;width:16px;height:16px;border:2px solid #707986;border-radius:3px}.tool-icon.edit:after{position:absolute;top:-5px;right:-5px;width:10px;height:3px;border-radius:2px;background:#707986;transform:rotate(-45deg);content:""}.tool-icon.phone{width:13px;height:19px;border-radius:3px}.footer{padding:25px 0 30px;color:#1f2328;background:rgba(241,244,247,.96);border-top:1px solid rgba(31,35,40,.12);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}.footer nav{display:flex;flex-wrap:wrap;gap:10px;color:#1f2328;font-size:13px;font-weight:700}.footer nav a{color:#1f2328}.footer nav a:not(:last-child):after{margin-left:10px;color:#8a9099;content:"|"}.footer p{margin:14px 0 0;color:#1f2328;font-size:11px}.footer-meta{white-space:normal;line-height:1.7}.qr-row{display:flex;gap:18px}.qr-box{display:grid;gap:7px;justify-items:center;color:#1f2328;font-size:12px}.qr-box img{display:block;width:62px;height:62px;border:5px solid #ffffff;background:#ffffff;object-fit:contain}@media (max-width: 1180px){.side-tabs{display:none}}@media (max-width: 980px){input:not([type=checkbox]):not([type=radio]):not([type=file]),textarea,select{font-size:16px}.page.home-page-shell{padding-top:18px;padding-bottom:56px}.page.home-page-shell>.container{width:min(100%,calc(100vw - 28px))}.page.home-page-shell .home-content-stack{gap:24px;padding:16px;border-radius:20px}.page.home-page-shell .home-blank-area{min-height:320px}.page.home-page-shell .hero-grid,.page.home-page-shell .live-grid{grid-template-columns:1fr}.topbar{height:auto}.nav-wrap{align-items:center;flex-direction:row;gap:12px;padding:10px 0}.nav-actions{position:relative;flex:0 0 auto}.mobile-nav-toggle{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;border:1px solid rgba(16,201,148,.18);box-shadow:0 10px 20px #0f172a0f}.mobile-nav-backdrop{position:fixed;top:66px;right:0;bottom:0;left:0;z-index:41;display:block;background:rgba(16,24,40,.22);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.mobile-nav-toggle[aria-expanded=true] span:nth-child(1){transform:translateY(6px) rotate(45deg)}.mobile-nav-toggle[aria-expanded=true] span:nth-child(2){opacity:0}.mobile-nav-toggle[aria-expanded=true] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}.brand{min-width:0}.brand-logo,.brand-logo-skeleton{height:38px}.brand-logo{max-width:min(42vw,220px)}.brand-logo-skeleton{width:min(42vw,164px)}.nav-list{position:fixed;top:66px;left:104px;right:0;z-index:42;display:grid;align-content:start;width:auto;min-height:calc(100vh - 66px);padding:18px 16px 28px;gap:10px;border-left:1px solid rgba(226,232,240,.9);border-radius:0;background:linear-gradient(180deg,rgba(248,253,251,.98) 0%,rgba(255,255,255,.98) 100%);box-shadow:-24px 0 50px #0f172a29;overflow-y:auto;visibility:hidden;pointer-events:none;opacity:0;transition:opacity .28s ease,visibility 0s linear .28s;scrollbar-width:none}.nav-list.mobile-open{opacity:1;visibility:visible;pointer-events:auto;transition:opacity .28s ease,visibility 0s linear 0s}.mobile-nav-head{display:grid;gap:6px;margin-bottom:4px;padding:18px 18px 16px;border:1px solid rgba(16,201,148,.12);border-radius:0;background:radial-gradient(circle at top right,rgba(16,201,148,.15),transparent 36%),linear-gradient(180deg,#f7fffb 0%,#f3f8ff 100%);color:#203042}.mobile-nav-head small{color:#10c994;font-size:11px;font-weight:800;letter-spacing:.14em;text-transform:uppercase}.mobile-nav-head strong{font-size:20px;line-height:1.2;font-weight:900}.mobile-nav-head p{margin:0;color:#64748b;font-size:12px;line-height:1.6}.nav-item{display:grid;width:100%}.nav-link-group{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px;width:100%}.nav-list a,.nav-list button{justify-content:flex-start;min-height:48px;padding:0 16px;border-radius:0;color:#334155;background:rgba(255,255,255,.88);box-shadow:0 6px 16px #94a3b814;line-height:1.2;transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease}.nav-list a:active,.nav-list button:active{transform:scale(.98)}.nav-list a.active,.nav-list button.active{color:#0f9f75;background:linear-gradient(135deg,#ecfff7 0%,#dffcf1 100%);box-shadow:0 10px 22px #10c99424}.site-shell.home-overlay-shell .nav-list.mobile-open{color:#334155;text-shadow:none}.site-shell.home-overlay-shell .nav-list.mobile-open a,.site-shell.home-overlay-shell .nav-list.mobile-open button,.site-shell.home-overlay-shell .nav-list.mobile-open .user-nav-link{color:#334155}.site-shell.home-overlay-shell .nav-list.mobile-open a.active,.site-shell.home-overlay-shell .nav-list.mobile-open button.active{color:#0f9f75}.site-shell.home-overlay-shell .nav-list.mobile-open .mobile-nav-head{color:#203042}.site-shell.home-overlay-shell .nav-list.mobile-open .mobile-nav-head p{color:#64748b}.site-shell.home-overlay-shell .nav-list.mobile-open .auth-nav-button{color:#fff!important}.site-shell.home-overlay-shell .nav-list.mobile-open .user-nav-link,.site-shell.home-overlay-shell .nav-list.mobile-open .user-nav-name{color:#334155!important}.site-shell.home-overlay-shell .nav-list.mobile-open .user-nav-phone{color:#64748b!important}.site-shell.home-overlay-shell .nav-list.mobile-open .submenu-toggle .nav-caret:before,.site-shell.home-overlay-shell .nav-list.mobile-open .submenu-toggle .nav-caret:after{background:#334155}.site-shell.home-overlay-shell .nav-list.mobile-open a.active .nav-caret:before,.site-shell.home-overlay-shell .nav-list.mobile-open a.active .nav-caret:after,.site-shell.home-overlay-shell .nav-list.mobile-open button.active .nav-caret:before,.site-shell.home-overlay-shell .nav-list.mobile-open button.active .nav-caret:after{background:#0f9f75}.submenu-toggle{width:48px;min-width:48px;padding:0}.auth-nav-button{justify-content:center;color:#fff!important;background:linear-gradient(135deg,#14d39c 0%,#0fb985 100%)!important;box-shadow:0 14px 28px #10c99438!important;font-weight:800}.user-menu-wrap,.user-nav-link{width:100%;max-width:none}.user-nav-link{justify-content:flex-start;min-height:56px;padding:0 16px;border-radius:0;background:rgba(255,255,255,.92);color:#334155;box-shadow:0 6px 16px #94a3b814}.user-nav-copy{display:flex;align-items:center;gap:8px;min-width:0;flex-wrap:wrap}.user-nav-name{color:inherit}.user-nav-phone{color:#64748b;font-size:12px}.category-menu{position:static;min-width:0;margin-top:8px;padding:8px;border:0;border-radius:0;background:rgba(240,249,255,.76);box-shadow:inset 0 0 0 1px #94a3b824}.category-menu a{min-height:40px;padding:0 12px;border-radius:0;line-height:40px;font-size:13px}.nav-submenu{position:static;display:none;min-width:0;margin-top:8px;padding:8px;border:0;border-radius:0;background:rgba(240,249,255,.76);box-shadow:inset 0 0 0 1px #94a3b824}.nav-item.submenu-open .nav-submenu{display:grid}.nav-submenu a{min-height:40px;padding:0 12px;border-radius:0;line-height:40px;font-size:13px}.user-hover-card{display:none}.floating-tools{right:12px;top:50%;bottom:auto;transform:translateY(-50%);border-radius:16px;box-shadow:0 16px 30px #0f172a24}.floating-tools button{width:52px;height:64px;gap:4px;font-size:12px;font-weight:700}.tool-icon{width:18px;height:18px}.hero-grid,.live-grid{grid-template-columns:1fr}.page.home-page-shell .hero-banner,.page.home-page-shell .study-panel{min-height:240px}.page.home-page-shell .hero-image{height:240px}.course-hero-panel,.course-content-layout{grid-template-columns:1fr}.detail-cover img,.detail-cover .course-cover,.course-buy-panel,.coupon-strip,.price-action-row{width:100%}.hero-carousel,.study-panel{min-height:220px}.page.home-page-shell .promo-grid,.page.home-page-shell .course-grid,.page.home-page-shell .live-grid,.promo-grid,.course-grid,.category-course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.personal-layout{grid-template-columns:1fr}.personal-sidebar,.personal-content{width:min(720px,100%);margin:0 auto}.personal-sidebar{position:static}.owned-course-row,.redeem-row,.order-row,.feedback-record-row,.message-row,.profile-edit-form,.order-course-cell{grid-template-columns:1fr}.player-topbar{grid-template-columns:auto minmax(0,1fr)}.player-actions{display:none}.player-study-layout{grid-template-columns:1fr}.tc-player-stage,.tc-player-video,.tc-player-stage .tcp-video,.tc-player-stage .tcplayer,.player-empty{min-height:56vw}.player-empty-live p{font-size:22px}.player-catalog-panel{height:auto;border-left:0;border-top:1px solid #2c2d31}.player-catalog-panel.with-live-chat{--player-chat-height: min(52vh, 420px);grid-template-rows:auto minmax(0,52vh) minmax(280px,var(--player-chat-height))}.player-catalog-panel.with-live-chat.chat-expanded{--player-chat-height: min(52vh, 420px);grid-template-rows:auto minmax(0,52vh) 0}.player-catalog-panel.with-live-chat.chat-expanded .player-live-chat{position:fixed;top:var(--player-live-chat-sheet-top, 52vh);right:0;bottom:auto;left:0;z-index:48;width:100vw;max-width:100vw;min-width:100vw;height:calc(100vh - var(--player-live-chat-sheet-top, 52vh));max-height:calc(100vh - var(--player-live-chat-sheet-top, 52vh));border-left:0;border-top:1px solid #2c2f38;border-radius:24px 24px 0 0;box-shadow:0 -18px 36px #0000006b}.player-live-chat-resize{display:none}.player-catalog-scroll{max-height:58vh}.player-live-chat-head{align-items:center}.player-live-chat-head-side{gap:6px}.player-live-chat-actions{flex-direction:column;align-items:stretch}}@media (max-width: 768px){.personal-layout{gap:16px;padding-bottom:0}.personal-content{width:100%}.personal-mobile-toolbar{position:sticky;top:78px;z-index:35;display:block}.personal-mobile-trigger{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;align-items:center;width:100%;padding:14px 16px;border:1px solid rgba(222,239,234,.95);border-radius:22px;background:radial-gradient(circle at top left,rgba(16,201,148,.16),transparent 44%),linear-gradient(135deg,rgba(247,255,252,.98) 0%,rgba(255,255,255,.98) 100%);box-shadow:0 16px 36px #12263f14;text-align:left}.personal-mobile-trigger-copy{display:grid;gap:4px;min-width:0}.personal-mobile-trigger-copy small{color:#10a97e;font-size:11px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.personal-mobile-trigger-copy strong{overflow:hidden;color:#20303b;font-size:18px;font-weight:900;text-overflow:ellipsis;white-space:nowrap}.personal-mobile-trigger-side{display:inline-flex;align-items:center;gap:10px}.personal-mobile-trigger-meta{display:inline-flex;align-items:center;justify-content:center;min-height:28px;padding:0 12px;border-radius:999px;background:rgba(255,255,255,.9);color:#0f9f7f;font-size:12px;font-weight:800;box-shadow:inset 0 0 0 1px #10c99424;white-space:nowrap}.personal-mobile-trigger-arrow{position:relative;width:24px;height:24px;border-radius:50%;background:rgba(255,255,255,.88);box-shadow:inset 0 0 0 1px #10c9941f;transition:transform .24s ease}.personal-mobile-trigger-arrow:before{position:absolute;top:7px;left:8px;width:8px;height:8px;border-right:2px solid #10a97e;border-bottom:2px solid #10a97e;transform:rotate(45deg);content:""}.personal-mobile-trigger[aria-expanded=true] .personal-mobile-trigger-arrow{transform:rotate(180deg)}.personal-drawer-backdrop{position:fixed;top:66px;right:0;bottom:0;left:0;z-index:42;display:block;background:rgba(15,23,42,.32);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.personal-sidebar{position:fixed;top:82px;right:10px;left:10px;z-index:44;width:auto;max-height:min(calc(100vh - 98px),620px);overflow:hidden;border:1px solid rgba(223,239,234,.96);border-radius:26px;box-shadow:0 28px 54px #0f172a29;opacity:0;transform:translateY(-18px) scale(.98);transform-origin:top center;pointer-events:none;transition:opacity .22s ease,transform .24s ease}.personal-sidebar.mobile-drawer-open{opacity:1;transform:translateY(0) scale(1);pointer-events:auto}.personal-drawer-head{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px;align-items:center;width:100%;padding:14px 18px 16px;border-bottom:1px solid rgba(216,240,232,.85);background:radial-gradient(circle at top left,rgba(16,201,148,.16),transparent 44%),linear-gradient(135deg,rgba(247,255,252,.98) 0%,rgba(239,251,247,.98) 100%);text-align:left}.personal-drawer-summary{display:grid;gap:4px;min-width:0}.personal-drawer-summary small,.personal-drawer-summary em{font-style:normal}.personal-drawer-summary small{color:#10a97e;font-size:11px;font-weight:800;letter-spacing:.14em;text-transform:uppercase}.personal-drawer-summary strong{overflow:hidden;color:#20303b;font-size:21px;font-weight:900;text-overflow:ellipsis;white-space:nowrap}.personal-drawer-summary em{color:#5f6f7d;font-size:12px;line-height:1.6}.personal-drawer-side{display:grid;justify-items:end;gap:10px}.personal-drawer-close{position:relative;width:30px;height:30px;border-radius:50%;background:rgba(255,255,255,.88);box-shadow:inset 0 0 0 1px #10c9941f}.personal-drawer-close:before,.personal-drawer-close:after{position:absolute;top:14px;left:8px;width:14px;height:2px;border-radius:999px;background:#10a97e;content:""}.personal-drawer-close:before{transform:rotate(45deg)}.personal-drawer-close:after{transform:rotate(-45deg)}.personal-drawer-meta{display:inline-flex;align-items:center;justify-content:center;min-height:28px;padding:0 12px;border-radius:999px;background:rgba(255,255,255,.88);color:#0f9f7f;font-size:12px;font-weight:800;box-shadow:inset 0 0 0 1px #10c99424;white-space:nowrap}.personal-sidebar-body{max-height:calc(min(calc(100vh - 98px),620px) - 106px);overflow-y:auto;padding-bottom:18px;scrollbar-width:none}.personal-sidebar-body::-webkit-scrollbar{display:none}.personal-summary{padding:18px 18px 14px}.study-stats{margin:0 16px 16px;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.study-stats div{padding:14px 6px 12px;border-radius:16px}.study-stats strong{font-size:20px}.study-stats span{margin-top:6px;font-size:11px;white-space:normal;line-height:1.4}.personal-menu{padding:4px 12px 16px}.personal-tabs{min-height:0;flex-wrap:nowrap;overflow-x:auto;padding:14px;scrollbar-width:none}.personal-tabs::-webkit-scrollbar,.order-filter-row::-webkit-scrollbar,.feedback-type-row::-webkit-scrollbar{display:none}.personal-tabs button,.order-filter-row button,.feedback-type-row button{flex:0 0 auto;white-space:nowrap}.personal-tabs button{min-width:88px}.order-tabs{padding:12px 16px 14px;border:1px solid #edf3f1;border-radius:24px;box-shadow:0 16px 40px #12263f0f;background:linear-gradient(180deg,rgba(255,255,255,.99) 0%,rgba(248,251,252,.99) 100%)}.history-order{top:25px;right:16px}.order-filter-row,.feedback-type-row{flex-wrap:wrap;overflow-x:visible;padding-bottom:0;scrollbar-width:none}.feedback-form,.profile-workspace{min-height:0;padding:22px 18px 24px}.feedback-field textarea,.feedback-field input,.feedback-submit{width:100%}.feedback-type-row{gap:10px;margin-bottom:20px}.feedback-type-row button{min-width:calc(50% - 5px);flex:1 1 calc(50% - 5px)}.feedback-field em{position:static;display:block;margin-top:8px;text-align:right}.photo-upload{width:100%;height:104px;margin-bottom:20px;border:1px dashed #cfe7df;border-radius:18px;background:linear-gradient(180deg,#f8fffc 0%,#f3fbf8 100%)}.message-tools{gap:10px;flex-direction:column;align-items:flex-start}.redeem-form-card .feedback-submit,.profile-form-actions button{justify-self:stretch;width:100%}.profile-avatar-editor>div{flex-wrap:wrap}.profile-form-actions{justify-content:stretch}.course-list-card,.redeem-list-card,.message-list-card,.feedback-record-list,.order-list-card{display:grid;gap:14px}.order-card{padding:0 16px 18px;border-radius:24px}.order-table-head{display:none}.redeem-row,.message-row,.feedback-record-row,.order-row{gap:12px;padding:16px;margin-bottom:0;border:1px solid #e8f1ef;border-radius:20px;background:linear-gradient(135deg,#ffffff 0%,#fbfefd 58%,#f2fcf8 100%);box-shadow:0 14px 30px #12283d0d;border-bottom:0}.order-course-cell,.order-money-cell,.order-status-cell,.row-actions{min-height:0}.row-actions{align-items:stretch}.profile-edit-form{grid-template-columns:1fr;gap:14px}.profile-edit-form label,.profile-form-actions,.profile-edit-form label.wide{grid-column:auto}.profile-edit-form label{gap:10px;padding:14px;border:1px solid rgba(223,232,240,.95);border-radius:18px;background:linear-gradient(180deg,rgba(249,252,255,.96) 0%,rgba(255,255,255,.98) 100%);box-shadow:0 10px 24px #0f172a0d}.profile-edit-form label span{margin:0;color:#23313f;font-size:13px;line-height:1.2}.profile-edit-form input,.profile-edit-form select,.profile-edit-form textarea{min-height:48px;padding:0 14px;border-radius:14px;border-color:#dbe5ee;background:#ffffff;box-shadow:inset 0 1px #ffffffd9}.profile-edit-form textarea{min-height:132px;padding:14px}.profile-edit-form input[readonly]{color:#5c6978;background:linear-gradient(180deg,#f7fafc 0%,#f1f5f9 100%)}.profile-edit-form select{-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:linear-gradient(45deg,transparent 50%,#7b8794 50%),linear-gradient(135deg,#7b8794 50%,transparent 50%);background-position:calc(100% - 18px) calc(50% - 3px),calc(100% - 12px) calc(50% - 3px);background-size:6px 6px,6px 6px;background-repeat:no-repeat;padding-right:36px}.profile-avatar-editor>div{align-items:flex-start;flex-direction:column;gap:12px}.profile-avatar-editor button{min-width:0;width:100%;height:42px;border-radius:14px}.profile-form-actions{padding:0;border:0;background:transparent;box-shadow:none}.profile-form-actions button{min-height:48px;border-radius:16px}}@media (max-width: 640px){.container{width:min(100% - 20px,1010px)}.page{padding-top:12px}.nav-wrap{gap:8px}.mobile-nav-backdrop,.personal-drawer-backdrop{top:56px;right:0;bottom:0;left:0}.brand-logo,.brand-logo-skeleton{height:32px}.brand-logo{max-width:min(38vw,168px)}.brand-logo-skeleton{width:min(38vw,136px);height:32px}.nav-list{top:56px;left:88px;min-height:calc(100vh - 56px);right:0;width:auto;padding:14px 12px 20px;font-size:13px}.mobile-nav-head{padding:16px;border-radius:0}.mobile-nav-head strong{font-size:18px}.floating-tools{right:8px;top:50%;bottom:auto;transform:translateY(-50%);border-radius:14px}.floating-tools button{width:48px;height:58px;font-size:11px}.auth-nav-button,.user-nav-link{max-width:none}.hero-content{grid-template-columns:1fr;padding:38px 16px 112px}.hero-content h1{max-width:330px;font-size:36px}.hero-subtitle,.hero-ribbon{min-height:38px;padding:0 16px;font-size:17px}.hero-ribbon{left:16px;bottom:18px}.teacher-stage{position:absolute;right:0;bottom:0;width:250px;min-height:168px}.hero-teacher{width:82px;height:148px}.hero-teacher span{width:58px;height:58px;font-size:15px}.hero-teacher small{display:none}.teacher-0{left:0;width:88px;height:160px}.teacher-1{left:72px;height:152px}.teacher-2{left:140px;height:146px}.live-card{grid-template-columns:1fr}.live-card .course-cover.asset-cover .course-cover-image-frame img{top:0;right:0;bottom:0;left:0;width:100%;max-width:100%;transform:none}.course-cover-preview-hint,.course-cover-hover-preview{display:none}.course-breadcrumb strong{max-width:210px}.course-hero-panel{gap:14px;padding:0;background:transparent}.course-buy-panel h1{font-size:22px;line-height:1.32}.detail-cover img,.detail-cover .course-cover{height:208px;border-radius:22px;box-shadow:0 18px 34px #141e2d1f}.course-share-row{gap:10px;margin-top:12px;padding:14px 16px;border:1px solid rgba(229,235,241,.9);border-radius:18px;background:rgba(255,255,255,.96);box-shadow:0 14px 28px #141e2d14}.course-tab-content{padding:20px 14px 24px}.page.course-detail-page-shell{background:linear-gradient(180deg,#f7fbff 0%,#f3f5f8 38%,#f4f4f4 100%)}.course-detail-shell{padding-top:8px}.course-detail-topband:before{top:-8px;background:linear-gradient(180deg,#ffffff 0%,#f9fbfd 100%)}.course-breadcrumb{gap:7px;min-height:0;margin-bottom:10px;overflow-x:auto;padding:2px 2px 6px;scrollbar-width:none}.course-breadcrumb::-webkit-scrollbar{display:none}.course-breadcrumb a,.course-breadcrumb strong,.course-breadcrumb span{flex:0 0 auto}.course-breadcrumb a,.course-breadcrumb strong{display:inline-flex;align-items:center;min-height:28px;padding:0 10px;border-radius:999px;background:rgba(255,255,255,.92);box-shadow:inset 0 0 0 1px #e6ebf1e6}.course-breadcrumb strong{max-width:230px;color:#54606d}.detail-cover{display:grid;gap:0}.course-buy-panel{min-height:0;padding:20px 18px 18px;border:1px solid rgba(239,242,246,.92);border-radius:22px;box-shadow:0 18px 34px #141e2d14}.course-meta-line{margin:12px 0 14px;padding-bottom:0;border-bottom:0;font-size:13px;line-height:1.75}.course-meta-chips{gap:8px;margin-bottom:14px}.course-meta-chips span{min-height:30px;padding:0 11px;font-size:11px}.coupon-strip{min-height:42px;margin-top:8px;padding:8px 14px;border-radius:18px 18px 0 0;font-size:11px;line-height:1.5}.coupon-strip strong{min-width:52px;height:24px;line-height:24px}.price-action-row{min-height:0;padding:16px;border-radius:18px;flex-direction:column;align-items:stretch;gap:14px;box-shadow:0 14px 26px #ff5a5a1a}.coupon-strip+.price-action-row{border-radius:0 0 18px 18px}.price-action-row>div{justify-content:space-between;gap:10px}.detail-price{font-size:34px}.price-action-row del{font-size:13px}.price-action-row button{width:100%;height:48px;border-radius:16px;font-size:15px}.course-content-layout{gap:14px;margin-top:16px}.course-main-card,.purchase-notice{overflow:hidden;border-radius:22px;box-shadow:0 16px 32px #141e2d14}.course-detail-tabs{height:50px;border-bottom-color:#edf1f5}.course-detail-tabs button{font-size:14px;font-weight:700}.course-detail-tabs button.active:after{right:calc(50% - 18px);left:calc(50% - 18px);height:4px;border-radius:999px}.course-tab-content h2{margin-bottom:16px;font-size:15px}.course-empty-line{padding:18px 16px;border-radius:16px;font-size:13px}.detail-teacher-list{gap:12px;margin:0 0 22px}.detail-teacher-card{width:100%;min-height:72px;padding:12px 14px;border:1px solid #edf1f5;border-radius:16px;background:linear-gradient(135deg,#fafcff 0%,#f5f8fc 100%);box-shadow:inset 0 1px #ffffffbf}.detail-teacher-card strong{font-size:14px}.detail-teacher-card p{margin-top:5px;font-size:12px}.catalog-list{gap:12px}.catalog-chapter{overflow:hidden;border:1px solid #edf1f5;border-radius:18px;background:linear-gradient(180deg,#ffffff 0%,#fbfcfe 100%);box-shadow:0 12px 24px #141e2d0d}.catalog-chapter-toggle{min-height:0;padding:15px 16px;border-radius:0;background:linear-gradient(180deg,#f7fafc 0%,#f1f5f9 100%)}.catalog-chapter-toggle strong{font-size:15px;line-height:1.5}.catalog-lesson{min-height:0;margin:0 14px;padding:14px 0;gap:12px}.catalog-lesson p{margin:0 0 6px;font-size:13px;line-height:1.6}.catalog-lesson small{font-size:12px}.catalog-lesson em{flex:0 0 auto;font-size:12px}.catalog-download-button{min-width:84px;height:32px;padding:0 12px;font-size:12px}.purchase-notice{padding:18px 16px 14px;font-size:13px;line-height:1.8}.purchase-notice h2{margin-bottom:10px;font-size:15px}.purchase-notice p{margin-bottom:10px}.course-poster{padding:22px 16px 28px}.course-poster h3{font-size:34px}.course-poster>p{font-size:15px}.poster-benefits,.course-poster section{padding:18px 16px}.catalog-lesson{margin:0 8px}.player-topbar{height:50px;gap:12px;padding:0 14px}.player-filter-row{gap:10px;overflow-x:auto;padding:10px 16px}.review-score-panel{grid-template-columns:1fr;gap:6px;padding:14px}.review-score-panel em{border-left:0;text-align:left}.review-stars{position:static;grid-column:2}.teacher-row{grid-template-columns:repeat(4,minmax(0,1fr))}.category-browser{min-height:0;padding-top:16px}.category-hero{gap:14px;margin-bottom:16px;padding:18px 16px;border-radius:20px}.category-hero-copy h1{font-size:24px;line-height:1.18}.category-hero-copy small{font-size:13px;line-height:1.65}.category-hero-meta{gap:8px}.category-hero-meta span{min-height:32px;padding:0 12px;font-size:11px}.category-filter-panel{gap:16px;margin-bottom:18px;padding:16px 14px;border-radius:18px}.category-filter-row{grid-template-columns:1fr;gap:10px}.category-filter-links{flex-wrap:nowrap;gap:10px;margin:0 -2px;overflow-x:auto;padding:2px;scrollbar-width:none}.category-filter-links::-webkit-scrollbar{display:none}.category-filter-links a{flex:0 0 auto;min-height:38px;padding:0 16px;border-radius:999px;box-shadow:0 8px 18px #94a3b81f}.category-filter-links a.active{padding:0 18px;box-shadow:0 12px 22px #10c99433}.category-course-grid .text-course-card{min-height:0;padding:16px 14px 14px;border-radius:16px}.category-course-grid .text-course-card h3{min-height:0;font-size:15px}.category-course-grid .text-course-card p{margin-top:10px;line-height:1.6}.category-course-grid .text-course-card .card-teachers{gap:12px;padding-top:18px}.category-course-grid .teacher-mini span{width:38px;height:38px}.category-course-grid .text-card-foot{margin-top:14px}.pagination{gap:8px;margin-top:22px;padding-bottom:8px}.pagination button{width:34px;height:34px;border-radius:10px}.page.home-page-shell>.container{width:min(100%,calc(100vw - 24px))}.page.home-page-shell .home-content-stack{gap:20px;padding:12px;border-radius:16px}.page.home-page-shell .home-blank-area{min-height:240px}.page.home-page-shell .hero-grid,.page.home-page-shell .live-grid,.page.home-page-shell .promo-grid,.page.home-page-shell .course-grid{grid-template-columns:1fr}.page.home-page-shell .hero-banner{min-height:220px}.page.home-page-shell .hero-image{height:220px}.page.home-page-shell .study-panel{min-height:220px}.page.home-page-shell .hero-slide-copy{left:18px;right:18px;bottom:20px}.page.home-page-shell .hero-slide-copy strong{font-size:22px}.page.home-page-shell .hero-slide-copy small{max-width:none;font-size:14px}.page.home-page-shell .panel-tabs{margin:0 -12px}.page.home-page-shell .study-panel{height:auto;padding:0 12px 14px}.page.home-page-shell .study-card{grid-template-columns:64px minmax(0,1fr);gap:9px;padding:8px}.page.home-page-shell .study-card-cover{width:64px;height:64px}.page.home-page-shell .section-title,.page.home-page-shell .section-heading{margin-bottom:14px}.page.home-page-shell .section-heading{gap:10px}.page.home-page-shell .section-title h2,.page.home-page-shell .section-heading h2{font-size:20px}.page.home-page-shell .section-heading a{flex:0 0 auto;white-space:nowrap}.page.home-page-shell .live-grid,.page.home-page-shell .promo-grid,.page.home-page-shell .course-grid,.promo-grid,.course-grid,.category-course-grid,.page.home-page-shell .live-card{grid-template-columns:1fr}.page.home-page-shell .content-section{margin-top:0}.promo-grid,.course-grid,.category-course-grid{grid-template-columns:1fr}.personal-sidebar{max-height:min(66vh,600px);top:70px;right:8px;left:8px}.personal-mobile-toolbar{top:64px}.personal-mobile-trigger{padding:13px 14px}.personal-drawer-head{gap:12px;padding:16px}.personal-sidebar-body{max-height:calc(min(66vh,600px) - 104px)}.personal-drawer-summary strong{font-size:18px;white-space:normal}.personal-drawer-summary em,.personal-drawer-meta{font-size:11px}.personal-summary{grid-template-columns:52px minmax(0,1fr);padding:16px 16px 12px}.study-stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.study-stats div{padding:12px 4px 10px}.study-stats strong{font-size:18px}.study-stats span{margin-top:5px;font-size:10px}.personal-menu a{min-height:44px;padding:0 14px 0 16px;border-radius:14px}.personal-tabs{padding:12px}.personal-tabs button{min-width:84px}.owned-course-cover{width:100%;height:180px}.owned-course-meta{justify-items:start;text-align:left}.order-course-cell,.order-money-cell,.order-status-cell,.row-actions{min-height:auto}.row-actions{align-items:stretch}.course-action-link{width:100%}.profile-workspace,.course-list-card,.redeem-list-card,.message-list-card,.feedback-record-list,.order-list-card{padding:16px}.pagination{margin-top:48px}.auth-modal{padding:28px 18px 22px}.wechat-pay-qr{min-height:236px;padding:14px;border-radius:16px}.detail-teacher-list{margin-left:0}.detail-teacher-card{width:100%}.teacher-detail-modal{padding:26px 18px 22px}.teacher-detail-modal-head{grid-template-columns:1fr;justify-items:center;text-align:center}.teacher-detail-modal-head h2{font-size:24px}.profile-panel{grid-template-columns:1fr;gap:34px}.user-hover-card{right:-10px}.personal-summary{grid-template-columns:52px minmax(0,1fr)}.order-table-head{--order-columns: minmax(0, 1fr) 78px 62px 62px;grid-template-columns:var(--order-columns)}.footer-inner,.qr-row{align-items:flex-start;flex-direction:column}}
