*{margin:0;padding:0;box-sizing:border-box}
:root{--primary:#000;--accent:#0071e3;--bg:#fff;--surface:#f5f5f7;--surface-hover:#e8e8ed;--border:rgba(0,0,0,0.08);--text:#1d1d1f;--text-secondary:#86868b;--radius:12px;--transition:all .3s cubic-bezier(.4,0,.2,1)}
html{scroll-behavior:smooth}
body{font-family:'Inter','SF Pro Display',-apple-system,sans-serif;background:var(--bg);color:var(--text);overflow-x:hidden}

/* ========== Apple开机动画 ========== */
.boot-screen{position:fixed;top:0;left:0;width:100%;height:100%;background:#000;display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:9999;transition:opacity .8s ease,visibility .8s ease}
.boot-screen.hidden{opacity:0;visibility:hidden}

.hello-text{font-family:'Space Grotesk',sans-serif;font-size:clamp(60px,15vw,140px);font-weight:700;color:#fff;letter-spacing:-4px;opacity:0;transform:scale(0.8);transition:all 1s cubic-bezier(.4,0,.2,1)}
.hello-text.show{opacity:1;transform:scale(1)}
.hello-text.gradient{background:linear-gradient(135deg,#0071e3,#34c759,#ff9500,#ff3b30);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-size:300% 300%;animation:gradientShift 3s ease infinite}

@keyframes gradientShift{0%,100%{background-position:0% 50%}50%{background-position:100% 50%}}

.boot-loader{width:200px;height:3px;background:rgba(255,255,255,0.2);border-radius:2px;margin-top:40px;overflow:hidden;opacity:0;transition:opacity .5s ease}
.boot-loader.show{opacity:1}

.loader-bar{width:0%;height:100%;background:linear-gradient(90deg,#0071e3,#34c759);border-radius:2px;transition:width 1.5s cubic-bezier(.4,0,.2,1)}

/* ========== 主应用 ========== */
.main-app{opacity:0;transition:opacity .8s ease}
.main-app.show{opacity:1}

.bg-gradient{position:fixed;top:0;left:0;width:100%;height:100%;background:linear-gradient(180deg,#fff 0%,#f5f5f7 100%);z-index:-1}

/* ========== 导航 ========== */
.navbar{position:fixed;top:0;left:0;right:0;height:60px;background:rgba(255,255,255,0.8);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);z-index:100}
.nav-content{max-width:800px;margin:0 auto;padding:0 24px;height:100%;display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:10px}
.logo-icon{width:36px;height:36px;background:#000;color:#fff;border-radius:10px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px}
.logo-text{font-size:18px;font-weight:700;color:var(--text)}
.nav-actions{display:flex;gap:12px}

/* ========== 按钮 ========== */
.btn-primary{background:var(--accent);color:#fff;border:none;padding:14px 28px;border-radius:var(--radius);font-size:15px;font-weight:600;cursor:pointer;transition:var(--transition);display:inline-flex;align-items:center;gap:8px}
.btn-primary:hover{background:#0077ed;transform:scale(1.02)}
.btn-primary-sm{background:var(--accent);color:#fff;border:none;padding:10px 20px;border-radius:var(--radius);font-size:14px;font-weight:600;cursor:pointer;transition:var(--transition)}
.btn-primary-sm:hover{background:#0077ed}
.btn-ghost{background:transparent;border:none;color:var(--text-secondary);padding:10px 16px;font-size:14px;font-weight:500;cursor:pointer;transition:var(--transition);border-radius:var(--radius)}
.btn-ghost:hover{color:var(--text);background:var(--surface)}
.btn-full{width:100%;justify-content:center}

/* ========== Hero ========== */
.hero{padding:120px 24px 40px;text-align:center}
.hero h1{font-size:clamp(36px,8vw,56px);font-weight:800;letter-spacing:-2px;margin-bottom:12px}
.hero p{font-size:18px;color:var(--text-secondary)}

/* ========== 价格卡片 ========== */
.pricing-section{padding:40px 24px 100px;max-width:800px;margin:0 auto}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.pricing-card{background:#fff;border:1px solid var(--border);border-radius:20px;padding:32px 24px;text-align:center;cursor:pointer;transition:var(--transition);position:relative}
.pricing-card:hover{transform:translateY(-8px);box-shadow:0 20px 40px rgba(0,0,0,0.08)}
.pricing-card.popular{border:2px solid var(--accent)}
.popular-badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--accent);color:#fff;padding:4px 16px;border-radius:100px;font-size:12px;font-weight:600}
.pricing-icon{width:56px;height:56px;background:var(--surface);border-radius:16px;display:flex;align-items:center;justify-content:center;margin:0 auto 16px}
.pricing-icon i{font-size:28px;color:var(--accent)}
.pricing-name{font-size:14px;color:var(--text-secondary);font-weight:600;margin-bottom:12px}
.pricing-price{margin-bottom:8px}
.pricing-price .currency{font-size:20px;font-weight:700;vertical-align:top}
.pricing-price .amount{font-size:56px;font-weight:800;letter-spacing:-2px}
.pricing-desc{font-size:13px;color:var(--text-secondary);margin-bottom:24px}
.btn-pricing{width:100%;padding:14px;background:var(--surface);border:none;border-radius:var(--radius);font-size:15px;font-weight:600;color:var(--text);cursor:pointer;transition:var(--transition)}
.btn-pricing:hover{background:var(--surface-hover)}
.btn-pricing-primary{background:var(--accent);color:#fff}
.btn-pricing-primary:hover{background:#0077ed}

/* ========== 用户区 ========== */
.user-section{padding:0 24px 100px;max-width:500px;margin:0 auto}
.user-card{background:#fff;border:1px solid var(--border);border-radius:20px;padding:32px}
.user-header{display:flex;align-items:center;gap:16px;margin-bottom:24px}
.user-avatar{width:48px;height:48px;background:#000;color:#fff;border-radius:14px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px}
.user-info{flex:1}
.user-email{font-weight:600;font-size:15px}
.user-expire{font-size:13px;color:var(--text-secondary);margin-top:4px}
.user-balance{background:var(--surface);border-radius:16px;padding:24px;text-align:center;margin-bottom:24px}
.balance-label{display:block;font-size:13px;color:var(--text-secondary);margin-bottom:8px}
.balance-value{font-size:48px;font-weight:800;letter-spacing:-2px}
.recharge-box{display:flex;gap:12px}
.recharge-box input{flex:1;padding:14px 16px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);font-size:15px;color:var(--text)}
.recharge-box input:focus{outline:none;border-color:var(--accent)}
.recharge-result{margin-top:16px;font-size:14px;color:#34c759;display:none}
.recharge-result.show{display:block}

/* ========== Footer ========== */
.footer{padding:40px 24px;text-align:center;color:var(--text-secondary);font-size:13px}

/* ========== 弹窗 ========== */
.modal{position:fixed;top:0;left:0;width:100%;height:100%;display:flex;align-items:center;justify-content:center;z-index:1000;opacity:0;visibility:hidden;transition:var(--transition)}
.modal.active{opacity:1;visibility:visible}
.modal-backdrop{position:absolute;width:100%;height:100%;background:rgba(0,0,0,0.4);backdrop-filter:blur(8px)}
.modal-content{position:relative;width:90%;max-width:400px;background:#fff;border-radius:20px;padding:40px;transform:scale(0.9);transition:var(--transition)}
.modal.active .modal-content{transform:scale(1)}
.modal-close{position:absolute;top:16px;right:16px;background:var(--surface);border:none;width:32px;height:32px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:var(--transition)}
.modal-close:hover{background:var(--surface-hover)}
.modal-content h2{font-size:24px;font-weight:700;margin-bottom:24px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13px;font-weight:600;margin-bottom:8px;color:var(--text-secondary)}
.form-group input{width:100%;padding:14px 16px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);font-size:15px;color:var(--text)}
.form-group input:focus{outline:none;border-color:var(--accent)}
.form-link{text-align:center;margin-top:20px;font-size:14px;color:var(--text-secondary)}
.form-link a{color:var(--accent);cursor:pointer;font-weight:600}
.purchase-info{background:var(--surface);border-radius:12px;padding:20px;margin-bottom:16px}
.purchase-row{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--border)}
.purchase-row:last-child{border:none}
.purchase-note{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-secondary);margin-bottom:20px}
.purchase-note i{color:var(--accent)}

/* ========== Toast ========== */
.toast{position:fixed;bottom:40px;left:50%;transform:translateX(-50%) translateY(100px);background:#1d1d1f;color:#fff;padding:16px 24px;border-radius:100px;display:flex;align-items:center;gap:8px;font-size:14px;font-weight:500;z-index:2000;transition:var(--transition)}
.toast.show{transform:translateX(-50%) translateY(0)}

/* ========== 卡密管理（站长工具） ========== */
.admin-section{padding:0 24px 80px;max-width:800px;margin:0 auto}
.admin-card{background:#fff;border:1px solid var(--border);border-radius:20px;padding:32px}
.admin-card h2{font-size:24px;font-weight:700;letter-spacing:-.5px;margin-bottom:10px}
.admin-desc{font-size:14px;color:var(--text-secondary);line-height:1.7;margin-bottom:16px}
.admin-note{background:var(--surface);border-radius:12px;padding:14px 16px;font-size:13px;color:var(--text-secondary);line-height:1.7;margin-bottom:24px}
.admin-note strong{color:var(--text)}
.admin-key-group{margin-bottom:20px}
.key-input-row{display:flex;gap:8px;align-items:center}
.key-input-row input{flex:1;min-width:0}
.key-hint{margin-top:8px;font-size:12px;color:var(--text-secondary)}
.key-hint.ok{color:#34c759}
.admin-gen{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end;padding-bottom:24px;border-bottom:1px solid var(--border);margin-bottom:20px}
.admin-gen .form-group{flex:1;min-width:130px;margin-bottom:0}
.admin-gen .form-group input{width:100%}
.gen-btn{height:48px;white-space:nowrap}
.btn-primary:disabled{opacity:.45;cursor:not-allowed;transform:none}
.btn-ghost:disabled{opacity:.45;cursor:not-allowed;background:transparent}
.admin-result{display:none;margin-bottom:24px}
.admin-result.show{display:block}
.admin-list-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.admin-list-head h3{font-size:16px;font-weight:700}
.admin-list{display:flex;flex-direction:column;gap:10px;max-height:380px;overflow-y:auto}
.admin-empty{font-size:13px;color:var(--text-secondary);background:var(--surface);border-radius:12px;padding:16px;line-height:1.7;margin:0}
.admin-error{font-size:13px;color:#ff3b30;background:rgba(255,59,48,.08);border-radius:12px;padding:16px;line-height:1.7;margin:0}
.list-title{font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:10px}
.code-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;background:var(--surface);border-radius:12px;padding:12px 16px}
.c-code{font-family:'Space Grotesk',ui-monospace,monospace;font-size:14px;font-weight:600;flex:1;min-width:170px;user-select:all}
.c-meta{font-size:12px;color:var(--text-secondary);flex:1;min-width:140px}
.badge{font-size:12px;font-weight:600;padding:4px 10px;border-radius:100px;white-space:nowrap}
.badge-unused{background:rgba(52,199,89,.15);color:#248a3d}
.badge-used{background:rgba(0,0,0,.06);color:var(--text-secondary);white-space:normal}
.btn-mini{background:#fff;border:1px solid var(--border);border-radius:8px;padding:6px 12px;font-size:12px;font-weight:600;color:var(--text);cursor:pointer;transition:var(--transition)}
.btn-mini:hover{background:var(--surface-hover)}
.recharge-hint{margin-top:12px;font-size:12px;color:var(--text-secondary);line-height:1.6}

/* ========== 响应式 ========== */
@media(max-width:600px){
    .pricing-grid{grid-template-columns:1fr;max-width:320px;margin:0 auto}
    .hello-text{letter-spacing:-2px}
    .admin-card{padding:24px 20px}
    .admin-gen .form-group{min-width:calc(50% - 6px)}
    .gen-btn{width:100%}
    .key-input-row{flex-wrap:wrap}
    .key-input-row input{flex:1 0 100%}
}