:root{--navy:#06142d;--navy2:#0b2146;--ink:#0d1a32;--blue:#3478ff;--cyan:#39e6d1;--amber:#ffb245;--paper:#f4f7fb;--white:#fff;--muted:#71809b;--line:#dce5f2;--shadow:0 24px 60px rgba(13,31,66,.14);--radius:22px;--header:78px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:"Microsoft YaHei UI","PingFang SC",system-ui,sans-serif;color:var(--ink);background:var(--paper);overflow-x:hidden}button,input,select,textarea{font:inherit}button,a{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}a{text-decoration:none;color:inherit}.hidden{display:none!important}
#particles{position:fixed;inset:0;z-index:-2;pointer-events:none}.noise{position:fixed;inset:0;z-index:100;opacity:.025;pointer-events:none;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
.topbar{height:var(--header);position:fixed;z-index:90;top:0;left:0;right:0;display:flex;align-items:center;padding:0 clamp(20px,5vw,82px);gap:40px;background:rgba(5,18,42,.88);backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,.08);color:#fff}.brand{display:flex;align-items:center;gap:12px;min-width:max-content}.brand-mark{width:44px;height:44px;position:relative;display:grid;place-items:center;color:#06142d}.brand-mark:before,.brand-mark:after{content:"";position:absolute;inset:2px;background:linear-gradient(135deg,var(--cyan),#61a5ff);clip-path:polygon(25% 0,75% 0,100% 25%,84% 100%,16% 100%,0 25%)}.brand-mark:after{inset:6px;background:#fff;opacity:.85}.brand-mark i{position:absolute;inset:-5px;border:1px solid rgba(57,230,209,.55);transform:rotate(45deg);z-index:-1}.brand-mark b{z-index:2;font-size:13px;letter-spacing:-1px}.brand>span:last-child{display:flex;flex-direction:column}.brand strong{font-size:17px;letter-spacing:1px}.brand small{font-size:8px;letter-spacing:2.4px;color:#8ea6c7;margin-top:2px}.main-nav{display:flex;align-items:center;justify-content:center;gap:clamp(18px,2.8vw,44px);flex:1}.main-nav a{color:#b8c7dd;font-size:14px;position:relative;padding:28px 0}.main-nav a:after{content:"";position:absolute;height:2px;left:50%;right:50%;bottom:18px;background:var(--cyan);transition:.25s}.main-nav a:hover,.main-nav a.active{color:#fff}.main-nav a.active:after{left:0;right:0}.nav-actions{display:flex;align-items:center;gap:9px;position:relative}.btn{border:0;border-radius:10px;min-height:42px;padding:0 18px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;gap:10px;transition:.25s}.btn:hover{transform:translateY(-2px)}.btn-primary{background:var(--blue);color:#fff;box-shadow:0 10px 24px rgba(52,120,255,.25)}.btn-accent{background:linear-gradient(135deg,var(--cyan),#58f0b1);color:#05233a;box-shadow:0 10px 30px rgba(57,230,209,.25)}.btn-ghost{border:1px solid rgba(255,255,255,.18);color:inherit;background:rgba(255,255,255,.06)}.btn-lg{height:54px;padding:0 26px;border-radius:12px}.wide{width:100%;height:50px}.icon-btn,.mobile-menu{width:42px;height:42px;border:0;border-radius:10px;color:#dbe7f7;background:rgba(255,255,255,.06)}.mobile-menu{display:none}.user-chip{height:44px;border:1px solid rgba(255,255,255,.15);border-radius:22px;padding:4px 12px 4px 5px;display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.08);color:#fff}.user-chip span{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--cyan),var(--blue));font-size:12px;font-weight:900}.user-chip em{font-style:normal}.user-menu{position:absolute;top:55px;right:0;background:#fff;border:1px solid var(--line);padding:8px;border-radius:14px;width:170px;box-shadow:var(--shadow);color:var(--ink)}.user-menu button{border:0;background:transparent;width:100%;padding:11px;text-align:left;border-radius:8px}.user-menu button:hover{background:#edf4ff}
.page{display:none;min-height:80vh;padding-top:var(--header)}.page.active{display:block}.hero{height:min(820px,calc(100vh - 0px));min-height:680px;position:relative;overflow:hidden;background:var(--navy)}.hero-bg{position:absolute;width:100%;height:100%;object-fit:cover;object-position:center}.hero-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(2,12,31,.96) 0%,rgba(4,20,48,.82) 35%,rgba(4,17,38,.18) 70%,rgba(4,17,38,.1)),linear-gradient(0deg,rgba(5,18,42,.7),transparent 38%)}.hero-grid{position:absolute;inset:0;opacity:.15;background-image:linear-gradient(rgba(69,211,255,.25) 1px,transparent 1px),linear-gradient(90deg,rgba(69,211,255,.25) 1px,transparent 1px);background-size:80px 80px;mask-image:linear-gradient(90deg,#000,transparent 64%);perspective:400px;transform:skewY(-4deg) scale(1.1)}.hero-copy{position:relative;z-index:2;width:min(650px,48vw);margin-left:clamp(30px,8vw,150px);padding-top:clamp(80px,11vh,125px);color:#fff}.eyebrow,.kicker{font-size:11px;font-weight:800;letter-spacing:3px;color:var(--cyan)}.eyebrow i{display:inline-block;width:20px;height:2px;background:var(--cyan);vertical-align:middle;margin-right:9px}.hero h1{font-size:clamp(48px,6.2vw,86px);line-height:1.04;letter-spacing:-4px;margin:24px 0 25px}.hero h1 em{font-style:normal;color:transparent;-webkit-text-stroke:1px #aeeef0;text-shadow:0 0 32px rgba(57,230,209,.22)}.hero-copy>p{color:#bdcbe0;font-size:16px;line-height:1.85}.hero-actions{display:flex;align-items:center;gap:28px;margin-top:34px}.play-link{display:flex;align-items:center;gap:12px;color:#fff;background:none;border:0;text-align:left}.play-link i{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;border:1px solid rgba(255,255,255,.4);font-style:normal;font-size:12px}.play-link span{display:flex;flex-direction:column;font-weight:700}.play-link small{color:#8296b4;font-weight:400;margin-top:4px}.hero-stats{display:flex;margin-top:55px;gap:0}.hero-stats div{padding:0 34px;border-left:1px solid rgba(255,255,255,.15)}.hero-stats div:first-child{padding-left:0;border-left:0}.hero-stats strong{display:block;color:#fff;font-size:27px;font-family:monospace}.hero-stats span{font-size:12px;color:#8fa2bf}.floating-card{position:absolute;z-index:4;color:#fff;width:165px;padding:14px;border:1px solid rgba(255,255,255,.22);border-radius:14px;background:rgba(8,28,57,.55);box-shadow:0 16px 40px rgba(0,0,0,.28);backdrop-filter:blur(14px);animation:float 5s ease-in-out infinite}.floating-card span{float:left;margin-right:10px;width:38px;height:38px;border-radius:10px;display:grid;place-items:center;background:rgba(57,230,209,.15);color:var(--cyan);font-size:22px}.floating-card b{display:block;font-size:13px;margin:2px 0 5px}.floating-card small{font-size:10px;color:#9eb1cc}.fc-1{right:5%;top:25%}.fc-2{right:32%;bottom:17%;animation-delay:-2.4s}.scroll-hint{position:absolute;z-index:3;bottom:25px;left:50%;display:flex;align-items:center;gap:12px;color:rgba(255,255,255,.55);font-size:8px;letter-spacing:2px}.scroll-hint i{height:34px;width:1px;background:linear-gradient(#fff,transparent)}@keyframes float{50%{transform:translateY(-13px)}}
.section{padding:100px clamp(24px,7vw,120px)}.section-head{display:flex;justify-content:space-between;align-items:end;margin:0 auto 42px;max-width:1320px}.section-head h2{font-size:clamp(30px,4vw,48px);margin:10px 0 8px;letter-spacing:-2px}.section-head p{color:var(--muted);margin:0}.text-link,.section-mini button{border:0;background:none;font-weight:800;color:var(--blue)}.subject-orbit{display:flex;gap:12px;max-width:1320px;margin:0 auto 34px;overflow:auto;padding:2px}.orbit-item{min-width:100px;padding:12px 18px;border:1px solid var(--line);border-radius:13px;background:#fff;display:flex;align-items:center;justify-content:center;gap:9px;font-weight:700;color:#52617a;transition:.25s}.orbit-item i{font-style:normal;color:var(--blue)}.orbit-item:hover,.orbit-item.active{background:var(--navy2);color:#fff;border-color:var(--navy2);transform:translateY(-2px)}.resource-grid{max-width:1320px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.resource-card{background:#fff;border:1px solid #e3eaf4;border-radius:var(--radius);overflow:hidden;transition:.3s;position:relative}.resource-card:hover{transform:translateY(-7px);box-shadow:var(--shadow);border-color:#cbd9ed}.card-cover{height:190px;position:relative;overflow:hidden;background:linear-gradient(135deg,var(--card,#3478ff),#07142e);display:grid;place-items:center}.card-cover:before{content:"";width:150px;height:150px;border:1px solid rgba(255,255,255,.2);position:absolute;transform:rotate(45deg);box-shadow:0 0 0 28px rgba(255,255,255,.035),0 0 0 56px rgba(255,255,255,.025)}.card-cover:after{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 20% 20%,rgba(255,255,255,.25) 0 2px,transparent 3px);background-size:34px 34px;opacity:.3}.subject-symbol{position:relative;z-index:1;font-size:70px;color:#fff;text-shadow:0 10px 35px rgba(0,0,0,.3);filter:drop-shadow(0 0 20px rgba(255,255,255,.2))}.access-tag{position:absolute;z-index:2;top:13px;left:13px;border-radius:7px;padding:5px 9px;font-size:10px;font-weight:900;background:rgba(6,20,45,.7);color:#fff;backdrop-filter:blur(8px)}.access-tag.vip{background:linear-gradient(135deg,#ffc45b,#ee8d22);color:#321b00}.fav-btn{position:absolute;z-index:3;right:12px;top:12px;width:35px;height:35px;border:1px solid rgba(255,255,255,.3);border-radius:50%;background:rgba(6,20,45,.42);color:#fff}.fav-btn.active{background:#ff5470}.card-body{padding:21px}.card-meta{display:flex;gap:7px;font-size:10px;color:var(--blue);font-weight:800}.card-meta span{background:#edf3ff;padding:4px 7px;border-radius:5px}.card-body h3{font-size:18px;margin:12px 0 8px;white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.card-body p{font-size:13px;line-height:1.65;color:var(--muted);height:43px;overflow:hidden}.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:16px;padding-top:15px;border-top:1px solid #edf1f7}.card-foot small{color:#8b99ad}.launch-btn{width:40px;height:40px;border:0;border-radius:10px;background:var(--ink);color:#fff;font-size:18px}.launch-btn:hover{background:var(--blue)}
.evolution-strip{background:linear-gradient(135deg,#081a39,#0c2c59);padding:90px clamp(24px,7vw,120px);color:#fff;position:relative;overflow:hidden}.evolution-strip:after{content:"";position:absolute;inset:-100% -20%;background:radial-gradient(circle,rgba(52,120,255,.18),transparent 32%);pointer-events:none}.kicker.light{color:#89a5cc}.steps{position:relative;z-index:1;display:flex;align-items:center;max-width:1150px;margin:auto}.steps article{flex:1;text-align:center}.step-no{display:block;font-family:monospace;color:#4e6b94;margin-bottom:15px}.step-icon{width:82px;height:82px;margin:auto;border-radius:22px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(57,230,209,.25),rgba(52,120,255,.25));border:1px solid rgba(92,220,228,.4);font-size:32px;color:var(--cyan);transform:rotate(45deg)}.step-icon::first-letter{transform:rotate(-45deg)}.steps h3{margin-top:28px}.steps p{color:#91a4c0;line-height:1.7;font-size:13px;max-width:230px;margin:auto}.step-line{flex:0 0 140px;height:1px;border-top:1px dashed #42628c}.cta-panel{margin:85px auto;max-width:1320px;border-radius:28px;background:linear-gradient(120deg,#142e5b,#0b1c3a);color:#fff;padding:55px 65px;display:flex;align-items:center;justify-content:space-between;box-shadow:var(--shadow);position:relative;overflow:hidden}.cta-panel:after{content:"DX";position:absolute;right:23%;font-size:180px;font-weight:900;color:rgba(255,255,255,.025);transform:rotate(-10deg)}.cta-panel h2{font-size:34px;margin:12px 0}.cta-panel p{color:#9badc6}
.page-hero{min-height:300px;padding:75px clamp(24px,8vw,140px) 55px;color:#fff;background:linear-gradient(125deg,#07162f,#103466);position:relative;overflow:hidden;display:flex;justify-content:space-between;align-items:center}.page-hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(57,230,209,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(57,230,209,.08) 1px,transparent 1px);background-size:52px 52px;mask-image:linear-gradient(90deg,#000,transparent)}.page-hero>div{position:relative}.page-hero h1{font-size:52px;margin:9px 0}.page-hero p{color:#9eb2cf}.page-hero.center{display:block;text-align:center;min-height:330px}.page-hero.center h1{font-size:48px}.member-state{display:inline-block;margin-top:20px;padding:8px 15px;border:1px solid rgba(57,230,209,.35);border-radius:20px;color:var(--cyan);font-size:12px}.hero-cube{width:120px;height:120px;border:1px solid rgba(57,230,209,.4);transform:rotate(45deg);margin-right:11vw;box-shadow:inset 0 0 50px rgba(57,230,209,.15),0 0 60px rgba(57,230,209,.12);animation:spinCube 8s linear infinite}.hero-cube i{position:absolute;width:20px;height:20px;background:var(--cyan);border-radius:3px;box-shadow:0 0 20px var(--cyan)}.hero-cube i:nth-child(1){top:-10px;left:-10px}.hero-cube i:nth-child(2){right:-10px;bottom:-10px}.hero-cube i:nth-child(3){left:50%;top:50%}@keyframes spinCube{to{transform:rotate(405deg)}}
.library-shell{max-width:1500px;margin:auto;padding:48px clamp(20px,5vw,75px) 100px;display:grid;grid-template-columns:240px 1fr;gap:42px}.filter-panel{align-self:start;position:sticky;top:100px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px}.filter-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.filter-title button{border:0;background:none;color:var(--blue);font-size:11px}.filter-panel>label{display:block;font-size:11px;color:#8090a7;font-weight:800;margin:22px 0 10px}.search-box{height:42px;border:1px solid var(--line);border-radius:9px;display:flex;align-items:center;padding:0 11px;gap:7px}.search-box input{border:0;outline:0;min-width:0;width:100%;background:transparent}.filter-list{display:grid;grid-template-columns:1fr 1fr;gap:7px}.filter-list button{border:0;background:#f1f5fa;padding:8px 5px;border-radius:7px;font-size:11px;color:#5e6c82}.filter-list button:hover,.filter-list button.active{background:#e2ebff;color:var(--blue);font-weight:800}.library-toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;color:#71809b}.library-toolbar b{color:var(--ink);font-size:20px}.view-tabs button{width:36px;height:34px;border:1px solid var(--line);background:#fff}.view-tabs button.active{color:var(--blue);background:#eaf1ff}.resource-grid.full{grid-template-columns:repeat(3,minmax(0,1fr))}.empty{text-align:center;padding:100px;color:#8b99ad}.empty span{font-size:60px}.pricing-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;max-width:1130px;margin:-50px auto 30px;position:relative;padding:0 20px}.price-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:36px;box-shadow:0 18px 45px rgba(10,28,60,.09);position:relative}.price-card.featured{background:linear-gradient(150deg,#102f61,#07172f);color:#fff;border-color:#3e6cae;transform:translateY(-18px)}.popular{position:absolute;right:18px;top:18px;background:var(--cyan);color:#05233a;padding:6px 11px;border-radius:15px;font-size:10px;font-weight:900}.plan-icon{display:grid;place-items:center;width:55px;height:55px;border-radius:16px;background:#eaf1ff;color:var(--blue);font-size:25px}.price-card.featured .plan-icon{background:rgba(57,230,209,.14);color:var(--cyan)}.price-card h3{font-size:23px;margin-bottom:7px}.price-card>p{color:var(--muted);font-size:13px}.price{margin:28px 0}.price b{font-size:40px}.price span{color:var(--muted);font-size:12px}.price-card ul{list-style:none;padding:0;margin:0 0 28px;line-height:2.3;font-size:13px}.price-card li::first-letter{color:var(--cyan)}.price-card li.muted{color:#a6b0bf}.demo-note{text-align:center;color:#8593a7;font-size:12px;margin-bottom:100px;padding:0 20px}
.dashboard-wrap{max-width:1400px;margin:50px auto 100px;display:grid;grid-template-columns:260px 1fr;gap:36px;padding:0 30px}.profile-card{align-self:start;position:sticky;top:110px;text-align:center;background:#fff;border:1px solid var(--line);border-radius:22px;padding:32px 18px}.big-avatar{width:82px;height:82px;display:grid;place-items:center;border-radius:24px;background:linear-gradient(135deg,var(--cyan),var(--blue));color:#fff;font-weight:900;font-size:24px;margin:auto;box-shadow:0 13px 35px rgba(52,120,255,.25)}.profile-card h2{margin:15px 0 8px}.vip-badge{display:inline-block;padding:5px 10px;border-radius:12px;background:#fff2d9;color:#af6a00;font-size:10px;font-weight:900}.profile-nav{border-top:1px solid var(--line);margin-top:25px;padding-top:16px}.profile-nav button{width:100%;border:0;background:none;padding:12px 14px;border-radius:9px;text-align:left;color:#6c7b91}.profile-nav button.active,.profile-nav button:hover{background:#ecf3ff;color:var(--blue);font-weight:800}.dash-head{display:flex;justify-content:space-between;margin-bottom:24px}.dash-head h1{font-size:38px;margin:8px 0}.dash-head p{color:var(--muted)}.stats-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.stat-card{padding:22px;border-radius:17px;background:#fff;border:1px solid var(--line);display:flex;align-items:center;gap:16px}.stat-card span{width:47px;height:47px;border-radius:13px;display:grid;place-items:center;background:#eaf1ff;color:var(--blue);font-size:20px}.stat-card b{display:block;font-size:24px}.stat-card small{color:var(--muted)}.dash-section{margin-top:25px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px}.section-mini{display:flex;justify-content:space-between;align-items:center}.section-mini h2{font-size:19px}.recent-list{display:grid;gap:9px}.recent-item{display:flex;align-items:center;gap:12px;border-top:1px solid #eef2f7;padding:13px 0}.recent-item i{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;background:#ecf4ff;font-style:normal}.recent-item div{flex:1}.recent-item b{display:block;font-size:13px}.recent-item small{color:var(--muted)}.resource-grid.mini{grid-template-columns:repeat(2,1fr);gap:14px}.resource-grid.mini .card-cover{height:120px}.resource-grid.mini .card-body{padding:15px}
.admin-layout{display:grid;grid-template-columns:230px 1fr;min-height:calc(100vh - var(--header));background:#eef3f9}.admin-side{background:#081a36;color:#fff;padding:28px 16px}.admin-brand{display:flex;align-items:center;gap:12px;padding:0 10px 28px;border-bottom:1px solid rgba(255,255,255,.09)}.admin-brand>span{width:40px;height:40px;display:grid;place-items:center;border-radius:12px;background:var(--cyan);color:#08203f;font-size:20px}.admin-brand div{display:flex;flex-direction:column}.admin-brand small{font-size:8px;letter-spacing:1.6px;color:#7188a8}.admin-side nav{display:grid;gap:7px;margin-top:22px}.admin-side nav button{border:0;border-radius:9px;padding:13px 14px;text-align:left;background:transparent;color:#91a6c2}.admin-side nav button.active,.admin-side nav button:hover{background:rgba(57,230,209,.12);color:var(--cyan)}.admin-main{padding:38px;min-width:0}.admin-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:28px}.admin-top h1{margin:7px 0}.status-dot{font-size:11px;color:#1a9d76;background:#dcfaef;padding:7px 12px;border-radius:15px}.admin-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.admin-stat{background:#fff;border-radius:16px;padding:22px;border:1px solid var(--line)}.admin-stat span{font-size:11px;color:var(--muted)}.admin-stat b{display:block;font-size:29px;margin-top:8px}.admin-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;margin-top:20px;overflow:auto}.admin-card h2{font-size:18px;margin-top:0}.data-table{border-collapse:collapse;width:100%;min-width:700px}.data-table th,.data-table td{padding:13px 11px;border-bottom:1px solid #edf1f6;text-align:left;font-size:12px}.data-table th{color:#77869b;font-size:10px;text-transform:uppercase}.data-table td button{border:0;border-radius:6px;padding:6px 9px;margin-right:4px}.danger{background:#ffe9ec;color:#c63c52}.soft{background:#e9f1ff;color:#2860c2}.upload-form{display:grid;grid-template-columns:1fr 1fr;gap:17px}.upload-form label,.auth-form label{display:flex;flex-direction:column;gap:7px;font-size:12px;font-weight:700;color:#536178}.upload-form input,.upload-form select,.upload-form textarea,.auth-form input{border:1px solid var(--line);border-radius:9px;padding:12px;background:#f9fbfd;outline:0}.upload-form input:focus,.upload-form textarea:focus,.auth-form input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(52,120,255,.1)}.upload-form .span-2{grid-column:span 2}.upload-drop{padding:34px;border:1px dashed #9eb3d1;background:#f3f7fd;text-align:center;border-radius:13px}.upload-drop input{max-width:100%}
.table-select{margin-top:6px;border:1px solid var(--line);border-radius:7px;padding:5px 8px;background:#f4f7fb;color:var(--ink)}.edit-action{background:#e4fbf7;color:#087d70}.edit-resource-modal{max-width:780px;max-height:92vh;overflow:auto}.edit-resource-head{padding:34px 38px 20px;border-bottom:1px solid var(--line)}.edit-resource-head h2{font-size:27px;margin:8px 0}.edit-resource-head p{margin:0;color:var(--muted);font-size:12px;word-break:break-all}.edit-resource-form{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:25px 38px 34px}.edit-resource-form label{display:flex;flex-direction:column;gap:7px;color:#536178;font-size:12px;font-weight:700}.edit-resource-form input,.edit-resource-form select,.edit-resource-form textarea{border:1px solid var(--line);border-radius:9px;padding:11px 12px;background:#f9fbfd;color:var(--ink);outline:0}.edit-resource-form input:focus,.edit-resource-form select:focus,.edit-resource-form textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(52,120,255,.1)}.edit-resource-form .span-2{grid-column:span 2}.edit-resource-form .feature-check{flex-direction:row;align-items:center;background:#f2f6fc;padding:12px;border-radius:9px}.edit-resource-form .feature-check input{width:18px;height:18px}.edit-actions{display:flex;justify-content:flex-end;gap:10px}.edit-actions .btn-ghost{color:var(--ink);border-color:var(--line)}
.footer{background:#06142d;color:#fff;padding:45px clamp(24px,7vw,120px);display:grid;grid-template-columns:auto 1fr auto;gap:30px;align-items:center}.footer>p{color:#8296b5;text-align:center}.footer>div{display:flex;gap:18px;font-size:12px;color:#9badc5}.footer>small{grid-column:1/-1;text-align:center;color:#536985;border-top:1px solid rgba(255,255,255,.07);padding-top:20px}
.modal-backdrop{position:fixed;inset:0;z-index:200;background:rgba(2,10,25,.78);display:grid;place-items:center;padding:24px;backdrop-filter:blur(10px)}.modal{width:min(900px,100%);max-height:92vh;background:#fff;border-radius:22px;position:relative;box-shadow:0 35px 90px rgba(0,0,0,.4);overflow:hidden}.modal-close{position:absolute;z-index:5;right:15px;top:14px;width:36px;height:36px;border:0;border-radius:50%;font-size:22px;background:rgba(0,0,0,.06)}.auth-modal{display:grid;grid-template-columns:42% 58%;min-height:520px}.auth-visual{padding:55px 38px;background:linear-gradient(145deg,#081a39,#16447b);color:#fff;display:flex;flex-direction:column;justify-content:center}.auth-visual h2{font-size:35px;line-height:1.2}.auth-visual p{color:#91a8c6;line-height:1.7}.mini-monster{width:100px;height:100px;display:grid;place-items:center;position:relative}.mini-monster:before{content:"";position:absolute;inset:4px;border:2px solid var(--cyan);transform:rotate(45deg);box-shadow:0 0 40px rgba(57,230,209,.35)}.mini-monster b{color:var(--cyan);font-size:28px}.auth-form{padding:60px 55px}.auth-tabs{display:flex;border-bottom:1px solid var(--line);margin-bottom:30px}.auth-tabs button{border:0;background:none;padding:12px 20px;font-weight:800;color:#9aa5b5;border-bottom:2px solid transparent}.auth-tabs button.active{color:var(--blue);border-color:var(--blue)}.auth-form form{display:grid;gap:18px}.form-tip{text-align:center;font-size:10px;color:#98a4b6}.sim-modal{width:96vw;height:92vh;border-radius:14px;background:#08101f;display:flex;flex-direction:column}.sim-bar{height:54px;flex:0 0 auto;color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 14px}.sim-bar>div{display:flex;align-items:center;gap:9px}.sim-bar button{border:0;background:rgba(255,255,255,.08);color:#fff;border-radius:7px;padding:7px 11px}.live-dot{width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}.sim-modal iframe{border:0;background:#fff;flex:1;width:100%}.intro-modal{max-width:600px;background:linear-gradient(145deg,#071831,#113a6d);color:#fff;text-align:center}.intro-scene{padding:70px}.intro-scene h2{font-size:30px}.intro-scene p{color:#a5b8d1;line-height:1.8}.portal-ring{width:100px;height:100px;border:2px dashed var(--cyan);border-radius:50%;display:grid;place-items:center;margin:auto;animation:spinCube 8s linear infinite}.portal-ring b{font-size:27px;color:var(--cyan)}.toast-zone{position:fixed;z-index:300;right:24px;top:96px;display:grid;gap:10px}.toast{background:#fff;border-left:4px solid var(--cyan);box-shadow:var(--shadow);border-radius:10px;padding:14px 18px;min-width:260px;animation:toastIn .3s ease}.toast.error{border-color:#ff5470}@keyframes toastIn{from{opacity:0;transform:translateX(20px)}}
.reveal{opacity:0;transform:translateY(25px);transition:.7s ease}.reveal.in{opacity:1;transform:none}body.dark{--paper:#071426;--ink:#edf5ff;--muted:#91a4c0;--line:#1d3658;--white:#0c203d;background:var(--paper)}body.dark .home-library,body.dark .library-shell,body.dark .dashboard-wrap{background:var(--paper)}body.dark .resource-card,body.dark .filter-panel,body.dark .price-card:not(.featured),body.dark .profile-card,body.dark .dash-section,body.dark .stat-card,body.dark .admin-card,body.dark .admin-stat{background:#0d2442;border-color:#203c60}body.dark .card-meta span,body.dark .filter-list button,body.dark .search-box,body.dark input,body.dark textarea,body.dark select{background:#0a1c35;color:#d5e4f7}body.dark .footer{border-top:1px solid #20395c}
.mobile-auth{display:none}
@media(max-width:1100px){.main-nav{display:none}.nav-actions{margin-left:auto}.resource-grid,.resource-grid.full{grid-template-columns:repeat(2,1fr)}.fc-2{right:8%;bottom:10%}.floating-card{display:none}.admin-stats{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){:root{--header:66px}.topbar{padding:0 16px}.brand strong{font-size:14px}.brand small{display:none}.brand-mark{width:36px;height:36px}.nav-actions>.btn,.icon-btn{display:none}.mobile-menu{display:block}.main-nav.open{display:flex;position:absolute;top:66px;left:0;right:0;background:#081a36;flex-direction:column;align-items:stretch;padding:10px 20px;gap:0}.main-nav.open a{padding:14px}.hero{height:auto;min-height:760px}.hero-bg{object-position:66% center;opacity:.65}.hero-shade{background:linear-gradient(90deg,rgba(2,12,31,.96),rgba(4,20,48,.55)),linear-gradient(0deg,#06142d,transparent)}.hero-copy{width:auto;margin:0;padding:90px 25px 30px}.hero h1{font-size:49px;letter-spacing:-3px}.hero-copy>p br{display:none}.hero-actions{align-items:flex-start;flex-direction:column}.hero-stats div{padding:0 18px}.section{padding:70px 20px}.section-head{align-items:flex-start;gap:20px;flex-direction:column}.resource-grid,.resource-grid.full,.pricing-grid{grid-template-columns:1fr}.subject-orbit{margin-right:-20px}.steps{flex-direction:column;gap:22px}.step-line{width:1px;height:45px;flex:0 0 45px;border-left:1px dashed #42628c}.cta-panel{margin:50px 20px;padding:38px 25px;flex-direction:column;align-items:flex-start;gap:20px}.page-hero{min-height:260px;padding:55px 25px 35px}.page-hero h1{font-size:42px}.hero-cube{display:none}.library-shell{grid-template-columns:1fr;padding:25px 18px 70px}.filter-panel{position:static}.pricing-grid{margin:-30px auto 30px}.price-card.featured{transform:none}.dashboard-wrap{grid-template-columns:1fr;padding:0 17px}.profile-card{position:static}.stats-row{grid-template-columns:1fr}.resource-grid.mini{grid-template-columns:1fr}.admin-layout{grid-template-columns:1fr}.admin-side{padding:13px}.admin-side .admin-brand{display:none}.admin-side nav{display:flex;overflow:auto;margin:0}.admin-side nav button{min-width:max-content}.admin-main{padding:20px 14px}.admin-top{align-items:flex-start}.status-dot{display:none}.admin-stats{grid-template-columns:1fr 1fr}.upload-form{grid-template-columns:1fr}.upload-form .span-2{grid-column:span 1}.footer{grid-template-columns:1fr;text-align:center}.footer>.brand{margin:auto}.footer>div{justify-content:center}.auth-modal{grid-template-columns:1fr}.auth-visual{display:none}.auth-form{padding:55px 26px 35px}.sim-modal{width:100vw;height:100vh;border-radius:0}.modal-backdrop:has(.sim-modal){padding:0}.intro-scene{padding:65px 25px}.toast-zone{left:16px;right:16px}.toast{min-width:0}.fc-1,.fc-2,.scroll-hint{display:none}}
@media(max-width:760px){.main-nav.open .mobile-auth{display:grid;grid-template-columns:1fr 1fr;gap:9px;padding:8px 0}.main-nav.open .mobile-auth .btn{display:flex}}
@media(max-width:760px){.admin-layout{display:block;width:100vw;min-width:0;overflow:hidden}.admin-side,.admin-main{min-width:0;width:100%}.admin-side nav{max-width:calc(100vw - 26px)}.admin-stats{grid-template-columns:1fr}.edit-resource-head{padding:28px 22px 16px}.edit-resource-form{grid-template-columns:1fr;padding:20px 22px 28px}.edit-resource-form .span-2{grid-column:span 1}.edit-actions{flex-direction:column-reverse}.edit-actions .btn{width:100%}}
/* Resource chapter filters and deterministic ordering controls */
.filter-select{width:100%;border:1px solid var(--line);border-radius:9px;padding:10px 11px;background:#f9fbfd;color:var(--ink);outline:0}.filter-select:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(52,120,255,.1)}
.card-meta{flex-wrap:wrap}.resource-admin-toolbar{display:flex;gap:12px;align-items:center;justify-content:space-between;margin:14px 0 18px}.resource-admin-toolbar .search-box{width:min(420px,100%)}.resource-admin-toolbar>.soft{border:0;border-radius:9px;padding:11px 14px;white-space:nowrap}.resource-order-table{min-width:1120px}.order-control{display:flex;align-items:center;gap:5px;white-space:nowrap}.order-control input{width:58px;border:1px solid var(--line);border-radius:6px;padding:6px 5px;text-align:center;background:#f9fbfd;color:var(--ink)}.order-control button{margin:0!important;min-width:31px;background:#e9f1ff;color:#2860c2}.order-control button:disabled{opacity:.35;cursor:not-allowed}.resource-order-table tr[hidden]{display:none}
@media(max-width:760px){.resource-admin-toolbar{align-items:stretch;flex-direction:column}.resource-admin-toolbar .search-box{width:100%}.resource-admin-toolbar>.soft{width:100%}}

/* Tablet and phone adaptation */
html,body{max-width:100%;overflow-x:hidden}img,video,canvas,svg{max-width:100%}button,input,select,textarea{touch-action:manipulation}.resource-card,.admin-card,.dash-section{min-width:0}
@media(max-width:1100px){
  .topbar{padding-left:24px;padding-right:24px;gap:18px}.mobile-menu{display:block;flex:0 0 42px}.main-nav.open{display:flex;position:absolute;z-index:95;top:var(--header);left:0;right:0;background:rgba(5,18,42,.98);box-shadow:0 18px 45px rgba(2,12,31,.35);flex-direction:column;align-items:stretch;padding:12px 24px 20px;gap:0}.main-nav.open a{padding:14px 6px}.main-nav.open a:after{bottom:7px}.hero-copy{width:min(690px,64vw);margin-left:5vw}.hero h1{font-size:clamp(50px,7vw,76px)}
  .library-shell{grid-template-columns:210px minmax(0,1fr);gap:24px;padding-left:28px;padding-right:28px}.resource-grid.full{grid-template-columns:repeat(2,minmax(0,1fr))}.admin-layout{grid-template-columns:190px minmax(0,1fr)}.admin-main{padding:28px 22px}.admin-side{padding-left:10px;padding-right:10px}.data-table th,.data-table td{padding:11px 9px}
}
@media(max-width:900px){
  .admin-layout{display:block;width:100%;min-width:0}.admin-side{position:relative;z-index:25;top:auto;padding:10px 12px}.admin-side .admin-brand{display:none}.admin-side nav{display:flex;gap:7px;margin:0;overflow-x:auto;overscroll-behavior-inline:contain;scrollbar-width:none}.admin-side nav::-webkit-scrollbar{display:none}.admin-side nav button{flex:0 0 auto;min-height:44px;white-space:nowrap}.admin-main{padding:24px 18px}.admin-top{margin-bottom:18px}.admin-card{max-width:100%}.section-mini{gap:12px;flex-wrap:wrap}
  .resource-order-table{display:block;min-width:0;width:100%}.resource-order-table thead{display:none}.resource-order-table tbody{display:grid;gap:12px}.resource-order-table tr[data-resource-row]{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0 18px;padding:14px;border:1px solid var(--line);border-radius:14px;background:var(--white);box-shadow:0 7px 22px rgba(13,31,66,.06)}.resource-order-table td{display:block;min-width:0;padding:9px 0;border:0}.resource-order-table td:before{content:attr(data-label);display:block;margin-bottom:6px;color:#8794a8;font-size:9px;font-weight:900;letter-spacing:1px}.resource-order-table td[data-label="顺序"],.resource-order-table td[data-label="资源"],.resource-order-table td[data-label="操作"]{grid-column:1/-1}.resource-order-table td[data-label="资源"]{border-top:1px solid #edf1f6;border-bottom:1px solid #edf1f6}.resource-order-table td[data-label="资源"] small{display:block;margin-top:5px;overflow-wrap:anywhere;line-height:1.45}.resource-actions{display:flex!important;flex-wrap:wrap;gap:7px}.resource-actions button{min-height:38px;margin:0!important}.order-control{flex-wrap:wrap}.order-control input{height:40px;width:72px}.order-control button{min-width:40px;min-height:40px}
  .upload-form{grid-template-columns:1fr}.upload-form .span-2{grid-column:span 1}.edit-resource-form{grid-template-columns:1fr}.edit-resource-form .span-2{grid-column:span 1}
}
@media(max-width:760px){
  :root{--header:66px;--radius:17px}.topbar{padding-left:max(14px,env(safe-area-inset-left));padding-right:max(14px,env(safe-area-inset-right));gap:10px}.brand{gap:9px}.brand strong{font-size:14px;letter-spacing:.2px}.brand-mark{flex:0 0 36px}.user-chip{padding-right:8px}.main-nav.open{padding-left:18px;padding-right:18px;max-height:calc(100vh - var(--header));overflow-y:auto}.main-nav.open a{min-height:46px;display:flex;align-items:center}.main-nav.open .mobile-auth{padding-bottom:max(8px,env(safe-area-inset-bottom))}
  .hero{min-height:720px}.hero-copy{width:auto;margin:0;padding:78px 20px 42px}.hero h1{font-size:clamp(40px,13vw,52px);letter-spacing:-2.5px}.hero-copy>p{font-size:14px;line-height:1.72}.hero-actions{gap:18px;margin-top:27px}.hero-actions .btn{width:100%}.hero-stats{width:100%;margin-top:40px}.hero-stats div{flex:1;padding:0 10px;text-align:center}.hero-stats strong{font-size:22px}.hero-stats span{font-size:10px}.section{padding:62px 17px}.section-head h2{font-size:34px;letter-spacing:-1.3px}.subject-orbit{margin-right:-17px;padding-right:17px;scroll-snap-type:x proximity}.orbit-item{scroll-snap-align:start;min-height:44px}.resource-grid,.resource-grid.full{grid-template-columns:1fr;gap:15px}.card-cover{height:160px}.card-body{padding:18px}.card-body h3{white-space:normal;line-height:1.4}.card-body p{height:auto;min-height:42px}.cta-panel{margin:45px 16px;padding:32px 22px}.cta-panel h2{font-size:28px}.cta-panel .btn{width:100%}
  .page-hero{padding:45px 20px 32px;min-height:230px}.page-hero h1,.page-hero.center h1{font-size:36px;letter-spacing:-1.4px}.library-shell{display:block;padding:20px 14px 65px}.filter-panel{padding:17px;border-radius:15px}.filter-panel>label{margin-top:17px}.filter-list{grid-template-columns:repeat(3,minmax(0,1fr))}.filter-list button{min-height:40px}.library-toolbar{gap:12px;align-items:flex-start}.library-toolbar b{font-size:17px}.view-tabs{display:none}
  .pricing-grid{padding:0 14px}.price-card{padding:28px 24px}.dashboard-wrap{margin-top:25px;padding:0 14px}.profile-card{padding:25px 16px}.dash-head{display:block}.dash-head h1{font-size:31px}.dash-head .btn{width:100%;margin-top:12px}.stats-row{gap:10px}.dash-section{padding:18px}.recent-item{align-items:flex-start}.recent-item small{display:block;margin-top:4px}.resource-grid.mini{gap:12px}
  .admin-side{top:auto}.admin-main{padding:20px 12px 50px}.admin-top h1{font-size:29px}.admin-card{padding:15px;border-radius:15px}.resource-admin-toolbar{margin-bottom:14px}.resource-order-table tbody{gap:10px}.resource-order-table tr[data-resource-row]{padding:12px}.resource-order-table td{font-size:12px}.table-select{min-height:40px;max-width:100%}.upload-drop{padding:24px 14px}.upload-form input,.upload-form select,.upload-form textarea,.auth-form input,.edit-resource-form input,.edit-resource-form select,.edit-resource-form textarea,.filter-select,.search-box input{font-size:16px}
  .modal-backdrop{padding:10px}.modal:not(.sim-modal){max-height:calc(100dvh - 20px);overflow-y:auto;border-radius:17px}.auth-modal{min-height:0}.auth-form{padding:48px 22px 28px}.edit-resource-head{padding:27px 20px 16px}.edit-resource-form{padding:18px 20px 24px}.edit-actions{position:sticky;bottom:0;background:var(--white);padding-top:10px}.sim-modal{width:100vw;height:100dvh;max-height:100dvh}.sim-bar{height:50px;padding:0 max(10px,env(safe-area-inset-right)) 0 max(10px,env(safe-area-inset-left));gap:8px}.sim-bar>div:first-child{min-width:0}.sim-bar b{display:block;max-width:52vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sim-bar button{min-width:42px;min-height:38px}.sim-modal iframe{min-height:0}.footer{padding:38px 20px max(30px,env(safe-area-inset-bottom))}.footer>p{text-align:center}.footer>div{flex-wrap:wrap}.toast-zone{top:calc(var(--header) + 12px)}
}
@media(max-width:480px){
  .brand>span:last-child{max-width:145px}.brand small{display:none}.user-chip em,.user-chip>i{display:none}.user-chip{padding-right:5px}.hero{min-height:680px}.hero-copy{padding-left:17px;padding-right:17px}.hero h1{font-size:40px}.hero-stats span{display:block;line-height:1.3}.filter-list{grid-template-columns:1fr 1fr}.resource-order-table tr[data-resource-row]{grid-template-columns:1fr}.resource-order-table td{grid-column:1/-1}.order-control{display:grid;grid-template-columns:72px repeat(3,40px);justify-content:start}.resource-actions button{flex:1;min-width:82px}.admin-stats{grid-template-columns:1fr}.section-mini button{min-height:40px}.intro-scene{padding:55px 20px}.intro-scene h2{font-size:26px}.auth-form{padding-left:18px;padding-right:18px}
}
@media(hover:none){.btn:hover,.resource-card:hover,.orbit-item:hover{transform:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}