/* Aurora — Lingdong Creative */
:root{--text:#19182d;--text-2:#606078;--text-3:#717187;--accent:#6750e8;--accent-2:#a047db;--border:#e9e7f2;--bg-soft:#f6f6fc;--gradient:linear-gradient(115deg,#485ded,#8650e9 55%,#bc4fb9)}
body{font-size:16px;background:#fcfcff}body::selection{background:#d6d0ff}.container{max-width:1240px}.nav{background:rgba(252,252,255,.88);backdrop-filter:blur(22px);border-bottom:1px solid #e9e7f280}.nav-inner{height:88px}.logo-mark{border-radius:13px;box-shadow:0 6px 20px #6750e824}.logo-en{letter-spacing:2.2px}.nav-links a{font-size:14px}.btn{border-radius:12px;min-height:46px;font-size:14px}.btn-primary{box-shadow:0 7px 20px #6750e825}.kicker{font-size:13px;letter-spacing:2px}.section{padding:92px 0}.reveal{opacity:1;transform:none}.section-head h2{font-weight:700;letter-spacing:-1.2px}.section-head{margin-bottom:42px}.section-head p{font-size:16px}.badge{font-size:14px;background:#ffffffb0;border:1px solid #dedaf7;color:#62508d}.premium-hero{position:relative;overflow:hidden;padding:162px 0 70px;background:radial-gradient(ellipse at 72% 32%,#ddd6ff85,transparent 45%),radial-gradient(ellipse at 95% 68%,#f5d9f589,transparent 40%),linear-gradient(145deg,#fafbff,#f4f2ff 65%,#fdf8ff)}.premium-hero::after{content:'';position:absolute;inset:0;background-image:radial-gradient(#9d92cd55 .65px,transparent .65px);background-size:23px 23px;mask-image:linear-gradient(90deg,transparent,#000);pointer-events:none}.premium-hero .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.06fr 1fr;align-items:center;gap:50px}.premium-hero h1{font-size:clamp(38px,4.6vw,64px);line-height:1.24;letter-spacing:-2px;font-weight:750;margin:25px 0}.premium-hero .hero-sub{font-size:17px;line-height:1.9;max-width:460px;color:#67627d;margin-bottom:28px}.premium-hero .hero-cta{justify-content:flex-start;gap:12px;margin:0}.hero-note{font-size:13px;margin-top:24px;gap:16px;color:#6f6983}.hero-eyebrow{display:inline-flex;align-items:center;gap:9px;border:1px solid #dcd5f3;border-radius:99px;padding:6px 13px;color:#65568d;font-size:13px;background:#ffffff90}.hero-eyebrow i{width:6px;height:6px;border-radius:50%;background:#9470e8;box-shadow:0 0 0 4px #9470e813}.creative-stage{position:relative;min-height:460px;perspective:1000px}.studio-panel{position:absolute;inset:18px 8px 32px 8px;transform:rotate(-3deg);background:#18172e;border:1px solid #ffffff60;border-radius:23px;box-shadow:0 35px 70px #55479433;color:#fff;overflow:hidden}.studio-top{display:flex;align-items:center;justify-content:space-between;padding:17px 20px;border-bottom:1px solid #ffffff18;font-size:12px;letter-spacing:1.5px;color:#c1bcd9}.studio-dots{display:flex;gap:5px}.studio-dots i{height:6px;width:6px;background:#77718f;border-radius:50%}.studio-canvas{position:relative;height:250px;background:radial-gradient(ellipse at 50% 65%,#8f55d96b,transparent 62%);display:grid;place-items:center;overflow:hidden}.orbit{width:240px;height:150px;position:absolute;border:1px solid #d9bdff68;border-radius:50%;transform:rotate(-28deg);box-shadow:0 0 35px #ae7bf520,inset 0 0 35px #ae7bf510}.orbit.two{transform:rotate(30deg);width:180px;height:240px}.aurora-core{width:140px;height:140px;border-radius:38% 62% 53% 47%/50% 45% 55% 50%;transform:rotate(-25deg);background:radial-gradient(circle at 28% 20%,#f5e7ff 0,#aaabff 16%,#9758ed 38%,#6045bd 58%,#252556 78%);box-shadow:inset -10px -10px 20px #0f132c80,inset 10px 10px 22px #ffffff66,0 0 80px #ae70fd68;animation:breathe 9s ease-in-out infinite}.canvas-label{position:absolute;bottom:12px;left:22px;font-size:12px;color:#c2b7d7;letter-spacing:2px}.studio-bottom{margin:0 20px;padding:17px 0;border-top:1px solid #ffffff18;display:flex;justify-content:space-between;align-items:center}.studio-bottom strong{display:block;font-size:17px;font-weight:500}.studio-bottom small{font-size:12px;color:#a6a0bc}.studio-play{display:grid;place-items:center;width:38px;height:38px;border:1px solid #ffffff33;border-radius:50%;color:#d4c4ff}.floating-chip{position:absolute;z-index:2;bottom:4px;left:-17px;background:#ffffffeb;backdrop-filter:blur(12px);padding:15px 23px;box-shadow:0 15px 40px #39305722;border:1px solid #fff;border-radius:15px;font-size:14px;display:flex;align-items:center;gap:13px}.floating-chip b{display:block;font-weight:600}.floating-chip small{color:#77718d;font-size:12px}.chip-icon{width:37px;height:37px;border-radius:12px;background:#eee9ff;color:#7862cd;display:grid;place-items:center;font-size:23px}.stage-tag{position:absolute;right:-8px;top:0;border:1px solid #ffffffa6;background:#ffffffc9;border-radius:12px;padding:12px 17px;box-shadow:0 9px 25px #51456e15;font-size:13px;color:#796094}.hero-foot{position:relative;z-index:1;display:flex;align-items:center;gap:26px;padding-top:55px;color:#79758c;font-size:13px}.hero-foot span:first-child{letter-spacing:2px}.hero-foot b{font-size:14px;font-weight:500;letter-spacing:1px}.hero-foot hr{flex:1;border:0;border-top:1px solid #d9d4e7}.value-strip{border-bottom:1px solid var(--border);background:#fff}.value-grid{display:grid;grid-template-columns:repeat(4,1fr);padding:26px 0}.value-item{padding:5px 25px;border-right:1px solid var(--border)}.value-item:last-child{border:0}.value-item strong{display:block;font-size:18px;font-weight:600}.value-item small{color:var(--text-2);font-size:13px}.split-heading{max-width:none;display:flex;align-items:end;justify-content:space-between;text-align:left;gap:24px}.split-heading p{max-width:450px}.text-link{font-size:14px;color:var(--accent);white-space:nowrap}.course-grid,.course-grid-all{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.course-card{border-radius:20px;box-shadow:0 5px 15px #2b1f5005}.course-card:hover{box-shadow:0 16px 40px #47317714;transform:translateY(-5px)}.course-cover{min-height:184px;background:radial-gradient(ellipse at 75% 30%,#ad9ce9,transparent 65%),linear-gradient(135deg,#282745,#6b539b);overflow:hidden}.course-cover::before{content:'';position:absolute;width:150px;height:150px;border:1px solid #ffffff55;border-radius:35px;transform:rotate(35deg);right:24px;top:32px;box-shadow:0 0 0 22px #ffffff09,0 0 0 44px #ffffff06}.course-card[data-category='AI 营销'] .course-cover{background:radial-gradient(ellipse at 80% 25%,#f4baa2,transparent 65%),linear-gradient(135deg,#734e70,#ce889a)}.course-card[data-category='AI 软件开发'] .course-cover{background:radial-gradient(ellipse at 75% 20%,#86bded,transparent 65%),linear-gradient(135deg,#233862,#657dc4)}.course-card[data-category='AI 视频制作'] .course-cover{background:radial-gradient(ellipse at 75% 20%,#d6a0ee,transparent 65%),linear-gradient(135deg,#562f75,#ae73b9)}.course-card[data-category='组合套餐'] .course-cover{background:linear-gradient(125deg,#202134,#6d648c)}.course-icon{background:#ffffff24;border:1px solid #ffffff65;backdrop-filter:blur(8px);color:white;width:66px;height:66px;border-radius:19px;font-size:32px;transform:rotate(-8deg);z-index:1}.course-category,.course-level{font-size:12px;background:#ffffffeb;z-index:1}.course-body{padding:24px}.course-body h3{font-size:20px;line-height:1.5}.course-body p{font-size:14px;line-height:1.85;min-height:52px}.course-meta{font-size:12px;gap:8px;margin:20px 0}.course-price{flex-wrap:wrap;row-gap:14px}.course-price .btn{font-size:13px;padding:8px 13px;min-height:38px}.course-price b{font-size:25px;color:#38304b}.course-price del{font-size:12px}.course-actions .card-link{font-size:14px}.learning-section{background:#1d1b32;color:#f7f5ff;position:relative;overflow:hidden}.learning-section .kicker{color:#b5a2fc}.learning-section .section-head p{color:#b6b0c9}.learning-section .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:36px}.learning-section .step{padding:30px;text-align:left;background:#ffffff06;border:1px solid #ffffff14;border-radius:20px}.learning-section .step-num{background:none;border:1px solid #a79bb34a;color:#bea7ff;box-shadow:none;border-radius:13px;margin:0 0 27px;font-size:19px}.learning-section .step p{color:#b6b0c9;font-size:15px}.learning-section .step h3{font-weight:500;font-size:21px}.learning-section .step::after{display:none}.learning-section::before{content:'';position:absolute;right:-100px;top:-250px;width:650px;height:650px;background:radial-gradient(circle,#9064f11a,transparent 65%);pointer-events:none}.activity-card{padding:32px;background:linear-gradient(125deg,#f5f1ff,#fff);border-radius:20px}.activity-card:nth-child(2){background:linear-gradient(125deg,#fdf0f7,#fff)}.activity-card h3{font-size:23px}.activity-card p{font-size:15px}.activity-card .text-link{display:inline-block;margin-top:18px}.testimonial{border-radius:20px;padding:30px}.testimonial p{font-size:15px;line-height:1.9}.stars{color:#9c7cdb}.store-section{background:#f7f6fc}.store-map{background-color:#ece9f8}.map-road{pointer-events:none}.map-label,.map-pin{z-index:1}.store-map .btn{z-index:2}.faq-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:70px}.faq-intro h2{font-size:36px;line-height:1.4}.faq-intro p{color:var(--text-2);margin:15px 0 25px}.faq-list details{border-bottom:1px solid var(--border);padding:21px 0}.faq-list summary{font-size:17px;cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:20px}.faq-list summary::after{content:'+';color:var(--accent);font-size:24px;font-weight:300}.faq-list details[open] summary::after{content:'−'}.faq-list details p{color:var(--text-2);font-size:15px;line-height:1.9;padding:15px 30px 0 0}.cta-banner{background:radial-gradient(ellipse at 90% 15%,#cf8bd47d,transparent 60%),linear-gradient(120deg,#48459b,#8260c1);border:1px solid #ffffff40;border-radius:26px;padding:60px 35px;box-shadow:0 16px 45px #6152a118}.cta-banner h2{font-size:34px;font-weight:600}.footer{background:#fff}.footer-brand p,.footer-col a{font-size:14px}.footer-bottom{font-size:12px}.page-hero{background:radial-gradient(ellipse at 75% 25%,#e4daf8,transparent 65%),#f6f5fc}.page-hero h1{font-size:clamp(36px,5vw,54px)}.catalog-tools{display:flex;justify-content:space-between;gap:18px;align-items:center;margin-bottom:22px}.catalog-search{max-width:420px;flex:1;position:relative}.catalog-search input{width:100%;border:1px solid var(--border);border-radius:12px;background:white;padding:14px 17px;font:inherit;font-size:15px}.catalog-tools select{border:1px solid var(--border);border-radius:12px;padding:13px;background:white;font:inherit;font-size:14px;color:var(--text-2)}.catalog-count{font-size:14px;color:var(--text-2);margin-bottom:22px}.course-filter{justify-content:flex-start;margin-bottom:22px}.course-filter button{font-size:14px;border-radius:10px}.course-filter button.active{background:#6852ce;color:#fff;border-color:#6852ce}.empty-courses{grid-column:1/-1;text-align:center;padding:60px;border:1px dashed var(--border);border-radius:20px;color:var(--text-2)}.detail-shell{border-radius:25px;box-shadow:0 15px 50px #6152a10a}.detail-cover{background:radial-gradient(ellipse at 65% 40%,#aa8ac9,transparent 60%),linear-gradient(120deg,#24223f,#685791)}.detail-main h1{font-size:34px}.detail-facts{font-size:14px}.detail-aside{background:#f7f5ff}.enroll-modal{backdrop-filter:blur(10px)}.enroll-dialog{border:1px solid #fff;border-radius:25px}.modal-fields label{font-size:14px}.modal-tip{font-size:13px}.form-status{padding:13px 16px;background:#f1edfb;border-radius:10px;font-size:14px;color:#564477;margin:14px 0}.form-status:empty{display:none}.input{font-size:16px}.skip-link{position:fixed;top:-100px;left:15px;z-index:999;background:white;padding:12px 20px;border-radius:10px}.skip-link:focus{top:10px}.premium-admin{background:#f6f5fa}.premium-admin .sidebar{background:linear-gradient(180deg,#242039,#32264f);color:#e7e1f7}.premium-admin .sidebar .logo-name,.premium-admin .sidebar a{color:inherit}.premium-admin .stat-card,.premium-admin .panel{border-radius:18px;border-color:#eae5f2;box-shadow:0 4px 20px #42346604}.premium-admin .sidebar .nav-item.active{background:#ffffff18;color:#fff}
@keyframes breathe{50%{transform:rotate(-12deg) translateY(-9px);border-radius:50% 40% 45% 55%/45% 50% 45% 50%}}
@media(max-width:1024px){.premium-hero .hero-grid{gap:25px}.creative-stage{min-height:410px}.studio-canvas{height:205px}.course-grid,.course-grid-all{grid-template-columns:repeat(2,minmax(0,1fr))}.nav-links{gap:18px}.learning-section .steps{gap:18px}.learning-section .step{padding:24px}.hero-note{flex-wrap:wrap}.value-item{padding:5px 16px}}
@media(max-width:768px){.nav-inner{height:74px}.premium-hero{padding:120px 0 36px}.premium-hero .hero-grid{grid-template-columns:1fr;gap:40px}.premium-hero h1{font-size:43px;letter-spacing:-1.6px}.premium-hero .hero-copy{text-align:left}.premium-hero .hero-sub{font-size:16px}.creative-stage{min-height:400px;max-width:500px;width:100%;margin:auto}.studio-panel{inset:14px 15px 28px}.hero-foot{gap:15px;padding-top:30px;flex-wrap:wrap}.hero-foot hr{display:none}.hero-foot b{font-size:12px}.value-grid{grid-template-columns:repeat(2,1fr);row-gap:22px}.value-item:nth-child(2){border:0}.value-item strong{font-size:16px}.section{padding:65px 0}.split-heading{align-items:start;flex-direction:column;gap:15px}.learning-section .steps{grid-template-columns:1fr}.learning-section .step{display:block}.faq-layout{grid-template-columns:1fr;gap:25px}.faq-intro h2{font-size:30px}.hero-note{justify-content:flex-start}.detail-main h1{font-size:28px}.nav .nav-links.open{background:#fcfcff}.cta-banner{padding:40px 25px}.cta-banner h2{font-size:27px}}
@media(max-width:540px){.container{padding:0 20px}.course-grid,.course-grid-all{grid-template-columns:1fr}.premium-hero h1{font-size:38px}.hero-note{font-size:12px;gap:10px}.hero-foot span:first-child{width:100%;font-size:12px}.floating-chip{left:0;padding:12px 16px}.stage-tag{right:0}.catalog-tools{flex-wrap:wrap}.catalog-search{min-width:100%;max-width:none}.course-filter{gap:7px}.course-filter button{font-size:13px;padding:9px 12px}.modal-fields{grid-template-columns:1fr}.testimonial-grid{grid-template-columns:1fr}.detail-columns{grid-template-columns:1fr}.detail-price{flex-wrap:wrap}.detail-price .btn{width:100%;margin:0}.value-item small{font-size:12px}.nav-actions>.btn{padding:9px 12px;font-size:13px}.logo-en{font-size:9px}.logo-name{font-size:17px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
.course-actions .card-link{border:0;background:transparent;cursor:pointer;padding:6px}
.deposit-summary{display:flex;justify-content:space-between;align-items:center;gap:14px;margin:14px 0 18px;padding:15px 16px;border:1px solid #dfd7ff;border-radius:13px;background:linear-gradient(120deg,#f6f2ff,#fff)}.deposit-summary strong{font-size:18px;color:#4d378e}.deposit-summary span{font-size:12px;color:#71688b;text-align:right}.modal-actions{display:flex;gap:10px;flex-wrap:wrap}.modal-actions .btn{flex:1}.payment-qr{width:190px;margin:4px auto 18px;padding:10px;background:#fff;border:1px solid var(--border);border-radius:12px}.payment-qr svg,.payment-qr img{display:block;width:100%;height:auto}
/* Rich visual layer */
.premium-hero{background-image:linear-gradient(90deg,#f9f9ff 0%,#faf9ffed 43%,#f0ecff99 100%),url('../images/ai-classroom-hero.png');background-size:cover;background-position:center}.course-card{border:1px solid #e8e3f4;background:#fff;overflow:hidden}.course-card .course-cover{background-image:linear-gradient(130deg,#282745ce,#6b539b82),url('../images/ai-classroom-hero.png');background-size:cover;background-position:center}.course-card:nth-child(2) .course-cover{background-position:72% center}.course-card:nth-child(3) .course-cover{background-position:88% center}.detail-cover{height:340px!important;justify-content:flex-start!important;padding:30px;background-image:linear-gradient(90deg,#17142dd9 0%,#28204391 48%,#30205225),url('../images/ai-classroom-hero.png')!important;background-size:cover!important;background-position:center!important;color:#fff}.detail-cover .course-category,.detail-cover .course-level{background:#ffffffdb!important;color:#4b3b72}.detail-cover .course-icon{position:relative;z-index:2}.cover-caption{position:absolute;left:32px;bottom:30px;z-index:2;display:grid;gap:5px}.cover-caption span{font-size:11px;letter-spacing:2px;color:#d5caf5}.cover-caption b{font-size:23px;font-weight:600}.cover-overlay{position:absolute;inset:0;background:linear-gradient(90deg,#14112788,transparent 70%)}.detail-story{padding:24px 26px;border:1px solid #e4dcf6;border-radius:18px;background:linear-gradient(135deg,#f9f6ff,#fff);margin-bottom:31px}.detail-story>span{color:#7354be;font-size:12px;letter-spacing:1.6px}.detail-story h2{margin:7px 0 10px!important;font-size:23px!important}.detail-story p{margin:0;color:#746d84;line-height:1.9}.detail-proof{display:grid;gap:11px;padding:18px 0;margin:18px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.detail-proof div{display:flex;align-items:baseline;justify-content:space-between;gap:10px}.detail-proof b{font-size:14px;color:#4c3b74}.detail-proof span{font-size:12px;color:#7d748e}@media(max-width:640px){.detail-cover{height:265px!important}.cover-caption{left:22px;bottom:23px}.cover-caption b{font-size:19px}}
.detail-gallery{display:grid;grid-template-columns:1.45fr 1fr;gap:14px;margin:0 0 30px}.detail-gallery figure{margin:0;min-height:180px;overflow:hidden;border-radius:16px;position:relative;background:#201b35}.detail-gallery img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;transition:transform .5s}.detail-gallery figure:hover img{transform:scale(1.04)}.detail-gallery figcaption{position:absolute;left:12px;bottom:11px;z-index:1;color:#fff;font-size:12px;padding:5px 8px;border-radius:7px;background:#151126a8;backdrop-filter:blur(6px)}.detail-flow{display:grid;grid-template-columns:120px repeat(3,1fr);gap:12px;padding:22px;margin-bottom:32px;border:1px solid #e6dff5;border-radius:16px;background:#faf8ff}.detail-flow>span{font-size:12px;letter-spacing:1.5px;color:#7152b8}.detail-flow div{padding-left:12px;border-left:2px solid #b69af2}.detail-flow b{font-size:13px;color:#4b3a72}.detail-flow p{margin:4px 0 0;font-size:12px;color:#7d748e;line-height:1.6}.teacher-card{display:flex;align-items:center;gap:11px;padding:14px;margin:-7px -7px 22px;border-radius:13px;background:linear-gradient(135deg,#eee8ff,#fff)}.teacher-avatar{display:grid;place-items:center;width:43px;height:43px;border-radius:13px;background:linear-gradient(135deg,#684bc3,#bd70c6);color:#fff;font-size:20px}.teacher-card span{font-size:11px;color:#796a98}.teacher-card h3{margin:0;font-size:16px}.teacher-card p{margin:1px 0 0;font-size:11px}.detail-faq{margin-top:35px;padding-top:26px;border-top:1px solid var(--border)}.detail-faq details{padding:14px 0;border-bottom:1px solid var(--border)}.detail-faq summary{cursor:pointer;font-weight:600;color:#4c3c72}.detail-faq p{margin:8px 0 0;color:#796f88;font-size:14px;line-height:1.8}@media(max-width:640px){.detail-gallery{grid-template-columns:1fr}.detail-gallery figure{min-height:205px}.detail-flow{grid-template-columns:1fr}.detail-flow div{padding:8px 0 8px 12px}}
/* In-place payment step for the course appointment dialog */
.home-payment{padding-top:6px}.home-pay-total{display:flex;justify-content:space-between;align-items:end;padding:15px 16px;border-radius:14px;background:linear-gradient(125deg,#263e72,#647ed4);color:#fff}.home-pay-total span{font-size:13px}.home-pay-total strong{font-size:27px}.home-payment>p{margin:15px 0 9px;color:#69768d;font-size:13px}.home-pay-options{display:grid;grid-template-columns:1fr 1fr;gap:10px}.home-pay-options button{padding:14px;border:1px solid #dfe5f1;border-radius:12px;background:#fff;text-align:left;color:#2d3b55;cursor:pointer}.home-pay-options button b,.home-pay-options button small{display:block}.home-pay-options button small{margin-top:3px;color:#77859a}.home-pay-options button.selected{border-color:#5977d7;background:#f2f5ff;box-shadow:0 7px 16px #4c6ab61c}.home-pay-confirm{margin-top:14px}.home-qr{width:min(250px,100%);margin:17px auto 0;padding:14px;border:1px solid #e2e8f4;border-radius:16px;background:#f9fbff;text-align:center}.home-qr span,.home-qr small{display:block;font-size:12px;color:#596a88}.home-qr img{display:block;width:172px;height:172px;margin:10px auto;background:#fff;padding:8px;border-radius:10px}.home-pay-message{min-height:19px;text-align:center;color:#526bb2}.home-pay-success{display:grid;gap:10px;padding:22px 4px;text-align:center}.home-pay-success b{font-size:21px;color:#263b69}.home-pay-success span{color:#718099;font-size:14px}@media(max-width:520px){.home-pay-options{grid-template-columns:1fr}.home-pay-total strong{font-size:25px}}