*{box-sizing:border-box}html{scroll-behavior:smooth}:root{--bg:#f6f8fc;--paper:#fff;--text:#111d33;--muted:#6b7890;--line:#e3e9f2;--blue:#2862e9;--blue2:#5e50ec;--cyan:#16b8bc;--navy:#0f1728;--tint:#eef4ff;--shadow:0 16px 46px rgba(31,62,120,.10);--radius:20px}body{margin:0;font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.62}a{text-decoration:none;color:inherit}button,input,select,textarea{font:inherit}.shell{width:min(1180px,calc(100% - 40px));margin:auto}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.nav-shell{height:76px;display:flex;align-items:center;gap:25px}.brand{display:flex;align-items:center;gap:10px;margin-right:auto}.brand img{width:48px;height:48px;object-fit:contain}.brand span{display:flex;flex-direction:column;line-height:1.14}.brand strong{font-size:18px}.brand small{font-size:11px;color:var(--muted);margin-top:5px}.nav-links{display:flex;align-items:center;gap:20px;font-size:14px;color:#35415a}.nav-links a{padding:27px 0 24px;border-bottom:2px solid transparent}.nav-links a:hover,.nav-links a.active{color:var(--blue);border-bottom-color:var(--blue)}.nav-actions{display:flex;align-items:center;gap:9px}.text-btn,.link-btn{border:0;background:transparent;color:#26324a;font-weight:700;cursor:pointer;padding:10px}.primary-btn,.outline-btn,.white-btn,.ghost-white{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:12px;padding:12px 18px;font-weight:800;cursor:pointer}.primary-btn{color:#fff;background:linear-gradient(135deg,var(--blue),var(--blue2));box-shadow:0 8px 22px rgba(48,80,214,.20)}.primary-btn.compact{padding:10px 15px}.primary-btn.large,.outline-btn.large{padding:14px 22px}.outline-btn{border:1px solid #d8e2f2;background:#fff;color:var(--blue)}
.hero-store{padding:72px 0 64px;background:radial-gradient(circle at 78% 12%,#dce7ff 0,rgba(220,231,255,0) 31%),linear-gradient(180deg,#f7faff 0,#f6f8fc 100%)}.hero-store-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:70px;align-items:center}.store-badge,.section-kicker{font-size:12px;font-weight:900;letter-spacing:.12em;color:var(--blue);text-transform:uppercase}.hero-store h1{font-size:clamp(48px,5.7vw,76px);line-height:1.04;letter-spacing:-.045em;margin:14px 0 18px}.hero-store h1 span{background:linear-gradient(90deg,var(--blue),var(--blue2));-webkit-background-clip:text;background-clip:text;color:transparent}.hero-store-copy>p{font-size:18px;color:var(--muted);max-width:690px}.store-search{display:flex;align-items:center;background:#fff;border:1px solid #dfe6f1;border-radius:16px;padding:6px;margin:28px 0 15px;box-shadow:0 12px 35px rgba(42,75,140,.08);max-width:690px}.store-search>span{font-size:23px;color:#7b8aa3;padding:0 10px}.store-search input{flex:1;border:0;outline:0;padding:12px 4px;background:transparent;color:var(--text)}.store-search button{border:0;border-radius:11px;background:var(--blue);color:#fff;padding:11px 18px;font-weight:800;cursor:pointer}.hot-tags{display:flex;flex-wrap:wrap;gap:11px;font-size:13px;color:var(--muted)}.hot-tags a{color:#405274;padding:3px 0}.hot-tags a:hover{color:var(--blue)}.store-preview{background:#fff;border:1px solid #e3e9f3;border-radius:28px;padding:23px;box-shadow:var(--shadow);position:relative}.store-preview:after{content:"";position:absolute;inset:14px -15px -14px 18px;border-radius:28px;background:linear-gradient(135deg,#e7efff,#f0ebff);z-index:-1}.preview-top{display:flex;justify-content:space-between;align-items:center}.preview-top strong{font-size:18px}.preview-top span{font-size:11px;color:#8794a9}.preview-search{margin:17px 0 14px;padding:11px 14px;border-radius:12px;background:#f4f7fb;color:#96a3b6;font-size:12px}.preview-apps{display:flex;flex-direction:column;gap:10px}.preview-apps article{display:flex;align-items:center;gap:12px;padding:14px;border:1px solid #e6ebf3;border-radius:15px}.preview-apps article>div{display:flex;flex:1;flex-direction:column}.preview-apps b{font-size:13px}.preview-apps small{font-size:10px;color:#8996aa}.preview-apps article>span{color:#9cabc0;font-size:22px}.app-icon,.store-app-icon,.latest-icon{display:grid;place-items:center;color:#fff;font-style:normal;font-weight:900}.app-icon{width:42px;height:42px;border-radius:12px}.icon-language,.lang{background:linear-gradient(135deg,#3768ee,#6653ee)}.icon-history,.history{background:linear-gradient(135deg,#e99543,#d66556)}.icon-math{background:linear-gradient(135deg,#15a7bc,#2d6ed8)}.preview-flow{display:flex;justify-content:space-between;align-items:center;margin-top:14px;padding:12px 13px;border-radius:13px;background:#eff5ff;color:#3d5f9d;font-size:11px}
.store-strip{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.store-strip-grid{display:grid;grid-template-columns:repeat(4,1fr)}.store-strip-grid>div{padding:18px 22px;border-right:1px solid var(--line)}.store-strip-grid>div:first-child{padding-left:0}.store-strip-grid>div:last-child{border-right:0}.store-strip strong{display:block;font-size:14px}.store-strip span{display:block;font-size:11px;color:var(--muted);margin-top:3px}
.section{padding:80px 0}.tint{background:var(--tint)}.section-head{display:flex;justify-content:space-between;align-items:end;gap:40px;margin-bottom:30px}.section-head h2{font-size:40px;letter-spacing:-.03em;margin:4px 0 0}.section-head p{color:var(--muted);margin:5px 0 0}.section-head>p{max-width:520px}.market-head{align-items:center}.market-tools{display:flex;gap:10px}.inline-search{display:flex;align-items:center;gap:6px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:0 11px}.inline-search input{border:0;outline:0;background:transparent;padding:10px 2px;width:180px}.market-tools select{border:1px solid var(--line);border-radius:12px;background:#fff;padding:10px 12px;color:#46536b}.app-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.store-app-card,.join-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:0 10px 30px rgba(37,67,120,.06)}.store-app-card{display:flex;flex-direction:column;min-height:315px}.store-app-top{display:flex;gap:13px;align-items:center}.store-app-icon{width:58px;height:58px;border-radius:15px;flex:0 0 auto}.store-app-main h3{font-size:20px;margin:0 0 2px}.store-app-main p{font-size:11px;color:var(--muted);margin:0;line-height:1.4}.app-summary{color:#627088;font-size:13px;min-height:64px;margin:20px 0}.app-meta{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto}.app-meta span{font-size:11px;padding:5px 8px;background:#eef3fb;color:#506078;border-radius:999px}.app-action{display:block;margin-top:18px;text-align:center;background:#f0f5ff;color:var(--blue);font-weight:800;padding:10px 12px;border-radius:11px}.app-action:hover{background:var(--blue);color:#fff}.join-card{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;border-style:dashed}.join-icon{display:grid;place-items:center;width:56px;height:56px;border-radius:15px;background:#edf3ff;color:var(--blue);font-size:30px}.join-card h3{font-size:20px;margin:17px 0 5px}.join-card p{font-size:13px;color:var(--muted);margin:0 0 18px}.search-empty{padding:25px;text-align:center;color:var(--muted)}
.category-store-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.category-store-grid button{border:1px solid #dfe7f2;background:#fff;border-radius:17px;padding:18px;text-align:left;display:flex;align-items:center;gap:12px;cursor:pointer;color:var(--text);transition:.2s}.category-store-grid button:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#bdccec}.category-store-grid i{display:grid;place-items:center;width:44px;height:44px;flex:0 0 auto;border-radius:13px;background:#edf3ff;color:var(--blue);font-style:normal;font-weight:900}.category-store-grid div{flex:1}.category-store-grid b{font-size:16px}.category-store-grid small{display:block;font-size:11px;color:var(--muted);margin-top:3px}.category-store-grid button>span{font-size:24px;color:#9aa8bc}.text-link{color:var(--blue);font-weight:700}.latest-list{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.latest-list>a{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:17px}.latest-list>a>div{display:flex;flex:1;flex-direction:column}.latest-list small{font-size:11px;color:var(--muted)}.latest-list em{font-style:normal;color:var(--blue);font-size:12px;font-weight:800}.latest-icon{width:48px;height:48px;border-radius:13px}.latest-icon.add{background:#edf3ff;color:var(--blue);font-size:25px}.latest-submit{border-style:dashed!important}
.developer-zone{padding-top:54px}.developer-store-card{background:linear-gradient(125deg,#1d4ed8,#5b4be5);color:#fff;border-radius:28px;padding:46px;display:grid;grid-template-columns:.85fr 1.15fr;gap:55px;align-items:center;box-shadow:0 20px 60px rgba(33,67,180,.25)}.section-kicker.light{color:#cfddff}.developer-message h2{font-size:42px;margin:6px 0 12px}.developer-message p{color:#e0e8ff}.developer-buttons{display:flex;gap:10px;margin-top:24px}.white-btn{background:#fff;color:#3157ca}.ghost-white{border:1px solid rgba(255,255,255,.42);color:#fff;background:transparent}.developer-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:11px}.developer-steps>div{display:flex;flex-direction:column;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.15);border-radius:15px;padding:18px}.developer-steps b{font-size:20px;color:#bcd0ff}.developer-steps strong{margin-top:14px}.developer-steps small{color:#d8e2ff;margin-top:5px}.service-section{padding-top:60px}.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.service-grid article{background:#fff;border:1px solid var(--line);border-radius:18px;padding:23px}.service-grid span{font-size:25px;color:var(--blue)}.service-grid h3{margin:10px 0 7px}.service-grid p{color:var(--muted);font-size:13px;margin:0}
.site-footer{background:#101827;color:#fff;padding:38px 0 20px}.footer-main{display:flex;align-items:center;justify-content:space-between;gap:40px}.footer-brand{display:flex;align-items:center;gap:10px}.footer-brand img{width:42px;height:42px}.footer-brand p{margin:2px 0 0;color:#aab5c8;font-size:12px}.footer-links{display:flex;flex-wrap:wrap;gap:17px;color:#c6cedc;font-size:13px}.footer-bottom{display:flex;justify-content:space-between;border-top:1px solid #263148;margin-top:28px;padding-top:16px;color:#8d99ad;font-size:12px}.simple-footer{margin-top:60px}.login-dialog{border:0;border-radius:20px;padding:0;max-width:430px;width:calc(100% - 30px);box-shadow:0 30px 90px rgba(8,20,50,.28)}.login-dialog::backdrop{background:rgba(9,17,31,.58)}.login-dialog form{padding:28px;position:relative}.dialog-close{position:absolute;right:16px;top:12px;border:0;background:transparent;font-size:24px}.login-dialog h2{margin-bottom:4px}.login-dialog p{color:var(--muted)}.login-dialog label,.submission-form label{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:700;margin-bottom:13px}.login-dialog input,.submission-form input,.submission-form select,.submission-form textarea{width:100%;padding:12px;border:1px solid #d8e0eb;border-radius:11px;background:#fbfcff;outline:0}
.sub-main{padding:64px 0 20px}.narrow{max-width:920px}.sub-title h1{font-size:48px;line-height:1.1;margin:8px 0 15px}.sub-title>p{font-size:17px;color:var(--muted)}.submission-form{margin-top:28px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px;box-shadow:var(--shadow)}.submission-form section{border-bottom:1px solid var(--line);padding-bottom:22px;margin-bottom:24px}.submission-form h2{font-size:20px;margin:0 0 17px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px 14px}.form-grid .full{grid-column:1/-1}.field-note{font-size:12px;color:var(--muted)}.agreement{display:flex!important;flex-direction:row!important;align-items:flex-start!important;font-weight:500!important;color:var(--muted)}.agreement input{width:auto!important;margin-top:4px}.submit-status{font-size:13px;color:var(--blue);min-height:20px}.rules-document{display:flex;flex-direction:column;gap:12px;margin-top:28px}.rules-document section{display:grid;grid-template-columns:65px 1fr;gap:18px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px}.rules-document section>b{font-size:22px;color:var(--blue)}.rules-document h2{font-size:20px;margin:0 0 5px}.rules-document p{color:var(--muted);margin:0}.rules-actions{display:flex;gap:10px;margin-top:25px}
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@media(max-width:660px){.shell{width:min(100% - 24px,1180px)}.nav-shell{height:68px}.brand small{display:none}.nav-actions .text-btn{display:none}.hero-store{padding:50px 0}.hero-store h1{font-size:46px}.hero-store-grid{gap:35px}.store-search button{padding:11px}.section{padding:60px 0}.section-head,.market-head{display:block}.market-tools{margin-top:15px}.inline-search{flex:1}.store-strip-grid,.category-store-grid,.service-grid,.app-grid,.latest-list,.developer-steps,.form-grid{grid-template-columns:1fr}.store-strip-grid>div{border-right:0;border-bottom:1px solid var(--line);padding-left:0}.developer-store-card{padding:30px}.footer-main,.footer-bottom{display:block}.footer-links{margin-top:20px}.footer-bottom span{display:block;margin-top:6px}.sub-title h1{font-size:38px}.form-grid .full{grid-column:auto}}