:root{--bg: #09090b;--card-bg: rgba(24, 24, 27, .6);--card-border: rgba(255, 255, 255, .08);--primary: #c1939b;--primary-hover: #ad7982;--primary-glow: rgba(193, 147, 155, .3);--text: #fafafa;--text-muted: #a1a1aa;--input-bg: rgba(9, 9, 11, .5);--input-border: rgba(255, 255, 255, .1);--error: #ef4444;--success: #10b981}*{box-sizing:border-box}body{margin:0;padding:0;background-color:var(--bg);color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;min-height:100vh;overflow-x:hidden;position:relative;line-height:1.5}.lang-en{display:none!important}.lang-zh{display:inline-block}body.en-mode .lang-zh{display:none!important}body.en-mode .lang-en{display:inline-block!important}.block-lang.lang-zh{display:block}body.en-mode .block-lang.lang-en{display:block!important}.inline-lang.lang-zh{display:inline}body.en-mode .inline-lang.lang-en{display:inline!important}.blob{position:fixed;border-radius:50%;filter:blur(80px);z-index:-1;opacity:.5;animation:float 20s infinite alternate}.blob-1{width:400px;height:400px;background:radial-gradient(circle,var(--primary) 0%,transparent 70%);top:-100px;left:-100px}.blob-2{width:600px;height:600px;background:radial-gradient(circle,#ebb5b2 0%,transparent 70%);bottom:-200px;right:-200px;animation-delay:-5s}@keyframes float{0%{transform:translateY(0) scale(1)}to{transform:translateY(-50px) scale(1.1)}}.page-wrapper{max-width:800px;margin:0 auto;padding:40px 20px;min-height:100vh;display:flex;flex-direction:column}.logo-area{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:40px;flex-wrap:wrap}.logo-area h1{flex:1;min-width:0}.lang-toggle-btn{padding:6px 12px!important;font-size:.85rem!important;height:auto!important;flex-shrink:0}@media(max-width:480px){.logo-area{flex-direction:column;align-items:flex-start;gap:8px;margin-bottom:24px}.logo-area h1{font-size:1.8rem}.lang-toggle-btn{align-self:flex-end}.page-wrapper{padding:20px 16px}.content-wrapper{padding:20px 16px;border-radius:16px}h2{font-size:1.4rem}}h1{margin:0;font-size:2.5rem;font-weight:700;letter-spacing:-.02em}.text-gradient{background:linear-gradient(135deg,#dfa9b1,#ad7982);-webkit-background-clip:text;background-clip:text;color:transparent}.content-wrapper{flex:1;background:var(--card-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--card-border);border-radius:24px;box-shadow:0 25px 50px -12px #00000080;padding:32px;position:relative;overflow:hidden}input[type=text],input[type=number],input[type=password],select,textarea{width:100%;background:var(--input-bg);border:1px solid var(--input-border);color:var(--text);padding:12px 16px;border-radius:12px;font-size:1rem;font-family:inherit;transition:all .2s ease;margin-top:8px;height:48px}textarea{height:auto;min-height:120px}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}input[type=number]{-moz-appearance:textfield;appearance:textfield;padding-right:10px;border-right:3px solid rgba(193,147,155,.35)}input[type=number]::-webkit-inner-spin-button,input[type=number]::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}input[type=number]:focus{border-right-color:var(--primary)}input:disabled,input[readonly]{background:#ffffff08;color:var(--text-muted);cursor:not-allowed}input[type=checkbox]{width:18px;height:18px;min-width:18px;margin:0;appearance:none;-webkit-appearance:none;background:var(--input-bg);border:1.5px solid var(--input-border);border-radius:5px;cursor:pointer;position:relative;transition:all .2s ease;flex-shrink:0}input[type=checkbox]:checked{background:var(--primary);border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}input[type=checkbox]:checked:after{content:"";position:absolute;left:4px;top:1px;width:5px;height:9px;border:2px solid white;border-top:none;border-left:none;transform:rotate(45deg)}input[type=checkbox]:hover:not(:checked){border-color:var(--primary);background:#c1939b14}label{display:block;font-weight:500;font-size:.95rem;color:#e4e4e7;margin-top:16px}.hint{font-size:.85rem;color:var(--text-muted);margin-top:4px}.btn{display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 24px;border-radius:12px;font-weight:600;font-size:1rem;cursor:pointer;transition:all .2s ease;border:none;font-family:inherit;white-space:nowrap}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 14px 0 var(--primary-glow)}.btn-primary:hover:not(:disabled){background:var(--primary-hover);transform:translateY(-1px);box-shadow:0 6px 20px #8b5cf666}.btn-primary:disabled{opacity:.5;cursor:not-allowed;background:var(--text-muted);box-shadow:none}.btn-ghost{background:transparent;color:var(--text-muted);border:1px solid var(--input-border)}.btn-ghost:hover:not(:disabled){background:#ffffff0d;color:var(--text)}.alert{padding:12px 16px;border-radius:12px;font-size:.9rem;margin-top:16px;display:none;animation:fadeIn .3s ease}.alert.show{display:block}.alert-error{background:#ef44441a;color:#fca5a5;border:1px solid rgba(239,68,68,.2)}.alert-success{background:#10b9811a;color:#6ee7b7;border:1px solid rgba(16,185,129,.2)}@keyframes fadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.flex{display:flex}.gap-2{gap:8px}.gap-4{gap:16px}.mt-4{margin-top:16px}.mt-8{margin-top:32px}.justify-between{justify-content:space-between}.items-center{align-items:center}.w-full{width:100%}.step-nav{display:flex;justify-content:flex-start;align-items:flex-start;gap:20px;margin-bottom:40px;overflow-x:auto;padding-bottom:12px;scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.1) transparent}.step-nav::-webkit-scrollbar{height:4px}.step-nav::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:4px}.step-dot{flex-shrink:0;display:flex;flex-direction:column;align-items:center;gap:8px;z-index:2;min-width:56px}.step-dot .num{width:32px;height:32px;border-radius:50%;background:var(--input-bg);border:1px solid var(--input-border);display:flex;align-items:center;justify-content:center;font-weight:600;color:var(--text-muted);transition:all .3s}.step-dot.active .num{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 0 16px #8b5cf666}.step-dot.done .num{background:var(--success);border-color:var(--success);color:#fff}.step-dot .lbl{font-size:.75rem;color:var(--text-muted)}.step-dot.active .lbl{color:var(--text)}.step-panel{display:none;animation:fadeInSlide .4s ease forwards}.step-panel.active{display:block}@keyframes fadeInSlide{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.oauth-box{background:var(--input-bg);border:1px solid var(--input-border);padding:24px;border-radius:16px;transition:all .2s}.oauth-box:hover{border-color:#fff3}h2{font-size:1.8rem;margin:0 0 8px;font-weight:600}h3{font-size:1.2rem;margin:0 0 16px;font-weight:500}.subtitle{color:var(--text-muted);margin-bottom:32px;font-size:1rem}.dot-pulse{width:8px;height:8px;border-radius:50%;background-color:var(--primary);animation:dot-pulse 1.5s infinite linear;margin-right:16px}@keyframes dot-pulse{0%{box-shadow:0 0 #8b5cf680}to{box-shadow:0 0 0 12px #8b5cf600}}.code-block{background:#0000004d;padding:2px 6px;border-radius:4px;color:#a78bfa}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#c1939b40;border-radius:99px;transition:background .2s}::-webkit-scrollbar-thumb:hover{background:#c1939b80}*{scrollbar-width:thin;scrollbar-color:rgba(193,147,155,.25) transparent}.step-nav::-webkit-scrollbar{height:3px}.step-nav::-webkit-scrollbar-thumb{background:#c1939b33;border-radius:99px}