*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Noto Sans SC',sans-serif;background:#0f0f13;color:#e8e8ed;min-height:100vh;display:flex;align-items:flex-start;justify-content:center;padding:30px 20px}
.container{width:100%;max-width:560px;background:#1a1a22;border-radius:16px;padding:36px 32px;box-shadow:0 20px 60px rgba(0,0,0,.6)}
.header{text-align:center;margin-bottom:8px}
.header h1{font-size:28px;font-weight:700;background:linear-gradient(135deg,#6dd5fa,#7b68ee);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.subtitle{font-size:13px;color:#888;margin-top:6px}
.activation-row{display:flex;gap:10px;margin-top:16px}
.activation-row input{flex:1;padding:10px 16px;border-radius:10px;border:1px solid #444;background:#1e1e28;color:#e8e8ed;font-size:14px;outline:none;text-align:center;letter-spacing:3px;font-weight:600}
.activation-row input:focus{border-color:#7b68ee}
.activation-row input::placeholder{color:#555;letter-spacing:0;font-weight:400}
.activation-row input:disabled{opacity:.5}
.activation-row button{padding:10px 20px;border:none;border-radius:10px;background:#7b68ee;color:#fff;font-size:14px;font-weight:600;cursor:pointer;white-space:nowrap}
.activation-row button:hover{background:#6a5cd8}
.activation-row button:disabled{background:#4a7a55;cursor:default}
.remaining-display{text-align:center;font-size:12px;color:#6dd5fa;margin-top:8px;padding:6px;background:rgba(109,213,250,.08);border-radius:6px}
.code-get-row{text-align:center;margin:12px 0 4px 0}
.code-btn{padding:6px 18px;border:1px solid #7b68ee;border-radius:20px;background:transparent;color:#7b68ee;font-size:12px;cursor:pointer}
.code-btn:hover{background:#7b68ee;color:#fff}
.category-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:20px 0}
.category-card{background:#25252e;border-radius:14px;padding:24px 16px;text-align:center;cursor:pointer;border:1px solid #2a2a34}
.category-card:hover{background:#2e2e3a;border-color:#7b68ee;transform:translateY(-2px)}
.cat-icon{font-size:36px;margin-bottom:8px}
.cat-name{font-size:16px;font-weight:600;color:#e8e8ed;margin-bottom:4px}
.cat-desc{font-size:12px;color:#888}
#contentArea{margin-top:8px}
.back-row{margin-bottom:12px}
.back-btn{padding:6px 14px;border:1px solid #444;border-radius:8px;background:transparent;color:#aaa;font-size:13px;cursor:pointer}
.back-btn:hover{border-color:#7b68ee;color:#7b68ee}
.section-title{font-size:18px;font-weight:600;margin-bottom:14px;color:#e8e8ed}
.notice{text-align:center;color:#888;padding:30px 0;font-size:14px}
.sw-list{display:flex;flex-direction:column;gap:10px}
.sw-card{background:#25252e;border-radius:12px;padding:16px;display:flex;gap:14px;align-items:flex-start;border:1px solid #2a2a34}
.sw-cover{width:64px;height:64px;border-radius:10px;overflow:hidden;flex-shrink:0;background:#1e1e28}
.sw-cover img{width:100%;height:100%;object-fit:cover}
.sw-info{flex:1;min-width:0}
.sw-name{font-size:15px;font-weight:600;color:#e8e8ed;margin-bottom:4px}
.sw-desc{font-size:12px;color:#888;margin-bottom:10px}
.sw-links{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.sw-dl-btn{display:inline-block;padding:6px 16px;border-radius:8px;background:linear-gradient(135deg,#6dd5fa,#7b68ee);color:#fff;font-size:13px;text-decoration:none;font-weight:500}
.sw-dl-btn:hover{opacity:.85}
.sw-extract{font-size:12px;color:#aaa}
.sw-extract b{color:#6dd5fa;font-family:monospace;letter-spacing:1px}
.video-input-area{display:flex;gap:10px;margin-bottom:12px}
.video-input-area input{flex:1;padding:12px 16px;border-radius:10px;border:1px solid #333;background:#25252e;color:#e8e8ed;font-size:14px;outline:none}
.video-input-area input:focus{border-color:#7b68ee}
.video-input-area input::placeholder{color:#666}
.video-input-area button{padding:12px 22px;border:none;border-radius:10px;background:#7b68ee;color:#fff;font-size:14px;font-weight:600;cursor:pointer;white-space:nowrap}
.video-input-area button:hover{background:#6a5bd8}
.video-input-area button:disabled{opacity:.5}
.status{text-align:center;font-size:13px;padding:8px;border-radius:8px;margin-bottom:4px}
.status.loading{color:#6dd5fa}
.error{color:#ff6b6b;background:rgba(255,107,107,.08);text-align:center;font-size:13px;padding:8px;border-radius:8px;margin:8px 0;display:none}
.loading{color:#6dd5fa;text-align:center;font-size:13px;padding:8px;margin:8px 0;display:none}
.result{background:#25252e;border-radius:12px;padding:20px;margin-top:8px}
.info-row{display:flex;padding:6px 0;font-size:14px}
.label{color:#888;min-width:52px}
.value{color:#e8e8ed;word-break:break-all}
.download-btn{display:block;width:100%;padding:12px 16px;margin-top:16px;border:none;border-radius:10px;background:linear-gradient(135deg,#6dd5fa,#7b68ee);color:#fff;font-size:14px;font-weight:600;cursor:pointer}
.download-btn:hover{opacity:.9}
.download-btn:disabled{opacity:.5}
.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.7);z-index:999;display:flex;align-items:center;justify-content:center}
.modal-content{background:#1a1a22;border-radius:16px;padding:36px 32px 28px;max-width:380px;width:90%;position:relative;box-shadow:0 20px 60px rgba(0,0,0,.6)}
.modal-close{position:absolute;top:12px;right:16px;font-size:24px;color:#666;cursor:pointer}
.modal-close:hover{color:#e8e8ed}
.modal-body{text-align:center}
.modal-text{font-size:16px;color:#e8e8ed;margin:6px 0}
.wechat-id{font-size:28px;font-weight:bold;color:#51cf66;letter-spacing:3px;margin:12px 0;font-family:monospace}
.modal-divider{height:1px;background:#2a2a34;margin:16px 0}
.modal-desc{font-size:13px;color:#888;line-height:1.7;text-align:left;padding:0 4px}

.extract-btn {
  padding: 6px 12px; border: 1px solid #6dd5fa; border-radius: 8px;
  background: transparent; color: #6dd5fa; font-size: 12px; cursor: pointer;
  white-space: nowrap;
}
.extract-btn:hover { background: rgba(109,213,250,0.15); }

.extract-display {
  font-size: 12px; color: #51cf66; font-family: monospace; letter-spacing: 1px;
}

.sw-search{margin-bottom:12px}
.sw-search-input{width:100%;padding:10px 14px;border-radius:10px;border:1px solid #333;background:#25252e;color:#e8e8ed;font-size:14px;outline:none}
.sw-search-input:focus{border-color:#7b68ee}
.sw-search-input::placeholder{color:#666}

/* ========== 用户认证相关 ========== */
.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 4px;
}
.header-top h1 {
  font-size: 22px;
  font-weight: 700;
  background: linear-gradient(135deg, #6dd5fa, #7b68ee);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}

.user-area {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}
.user-btn {
  padding: 5px 12px;
  border: 1px solid #444;
  border-radius: 8px;
  background: transparent;
  color: #aaa;
  font-size: 12px;
  cursor: pointer;
  white-space: nowrap;
}
.user-btn:hover {
  border-color: #7b68ee;
  color: #7b68ee;
}
.user-btn-reg {
  border-color: #7b68ee;
  color: #7b68ee;
}
.user-btn-reg:hover {
  background: #7b68ee;
  color: #fff;
}
.user-info {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
}
.user-name {
  color: #6dd5fa;
  font-weight: 600;
}
.user-quota {
  color: #51cf66;
  font-size: 11px;
  background: rgba(81, 207, 102, 0.1);
  padding: 2px 8px;
  border-radius: 10px;
}
.user-btn-redeem {
  padding: 3px 10px;
  border: 1px solid #51cf66;
  border-radius: 6px;
  background: transparent;
  color: #51cf66;
  font-size: 11px;
  cursor: pointer;
}
.user-btn-redeem:hover {
  background: rgba(81, 207, 102, 0.15);
}

.auth-input {
  width: 100%;
  padding: 10px 16px;
  border-radius: 10px;
  border: 1px solid #444;
  background: #1e1e28;
  color: #e8e8ed;
  font-size: 15px;
  outline: none;
  margin-bottom: 10px;
  box-sizing: border-box;
}
.auth-input:focus {
  border-color: #7b68ee;
}
.auth-input::placeholder {
  color: #555;
}

.auth-btn {
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: 10px;
  background: #7b68ee;
  color: #fff;
  font-size: 15px;
  cursor: pointer;
  font-weight: 600;
}
.auth-btn:hover {
  background: #6a5cd8;
}
.auth-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.auth-error {
  color: #ff6b6b;
  font-size: 13px;
  margin-bottom: 10px;
  text-align: center;
}

.auth-result {
  margin-top: 12px;
  font-size: 16px;
  color: #6dd5fa;
  text-align: center;
}
.dl-row{display:flex;gap:10px;margin-top:12px}
.dl-row .download-btn{flex:1;margin-top:0;width:auto;padding:12px 16px}
.copy-btn{flex:1;padding:12px 16px;border:none;border-radius:10px;background:linear-gradient(135deg,#2b2b2b,#3a3a45);color:#6dd5fa;font-size:14px;font-weight:600;cursor:pointer;border:1px solid #6dd5fa}
.copy-btn:hover{background:linear-gradient(135deg,#3a3a45,#4a4a55)}
.copy-btn:disabled{opacity:.5}