:root{--canvas:#FFFFFF;--surface:#FAFAFC;--line:#E7E9EE;--ink:#17181C;--ink-2:#4E5564;--ink-3:#7A8090;--brand:#D81B60;--brand-ink:#C2185B;--brand-soft:#FDEFF5;--white:#FFFFFF;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--shadow-1:0 1px 2px rgba(23,24,28,.04), 0 1px 1px rgba(23,24,28,.03);--shadow-2:0 2px 6px rgba(23,24,28,.05), 0 8px 24px rgba(23,24,28,.06);--font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica 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var(--line)}.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:-.01em}.brand-mark{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--brand) 0%,#E91E5F 100%);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:900;font-size:15px}.brand em{font-style:normal;color:var(--brand-ink)}.nav-desktop{display:flex;align-items:center;gap:8px}.nav-desktop a.nav-link{font-size:14.5px;color:var(--ink-2);font-weight:500;padding:8px 12px;border-radius:var(--radius-sm);transition:color .15s ease,background .15s ease}.nav-desktop a.nav-link:hover{color:var(--ink);background:var(--surface)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:inherit;font-size:15px;font-weight:600;line-height:1;padding:12px 20px;border-radius:var(--radius-md);border:1px solid 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.btn{width:100%}.footer-grid{grid-template-columns:1fr;gap:32px}.footer-bottom{flex-direction:column;align-items:flex-start}}.auth-overlay{position:fixed;inset:0;z-index:1000;display:grid;place-items:center;padding:1.25rem;background:#17181c8c;backdrop-filter:blur(6px);animation:auth-fade-in .2s ease}.auth-modal{position:relative;width:min(420px,100%);padding:2rem 1.75rem 1.75rem;border-radius:var(--radius-lg);background:var(--canvas);border:1px solid var(--line);box-shadow:var(--shadow-2);animation:auth-slide-up .25s ease}.auth-close{position:absolute;top:.875rem;right:.875rem;border:none;background:none;font-size:1.5rem;line-height:1;color:var(--ink-3);cursor:pointer}.auth-close:hover{color:var(--ink)}.auth-head{text-align:center;margin-bottom:1.25rem}.auth-logo{display:inline-flex;align-items:center;justify-content:center;width:2.25rem;height:2.25rem;margin-bottom:.75rem;border-radius:8px;background:linear-gradient(135deg,var(--brand) 0%,#e91e5f 100%);color:#fff;font-weight:900;font-size:.9375rem}.auth-title{margin:0 0 .375rem;font-size:1.375rem;font-weight:800;color:var(--ink)}.auth-subtitle{margin:0;font-size:.8125rem;color:var(--ink-3);line-height:1.5}.auth-tabs{display:grid;grid-template-columns:1fr 1fr;gap:.5rem;margin-bottom:1.25rem;padding:.25rem;border-radius:999px;background:var(--surface);border:1px solid var(--line)}.auth-tab{border:none;border-radius:999px;padding:.5rem 1rem;background:transparent;color:var(--ink-3);font-size:.875rem;font-weight:600;cursor:pointer}.auth-tab.active{background:var(--canvas);color:var(--brand-ink);box-shadow:var(--shadow-1)}.auth-form .field{display:block;margin-bottom:1rem}.auth-form .field>span{display:block;margin-bottom:.375rem;font-size:.8125rem;font-weight:600;color:var(--ink-2)}.auth-form .field input{width:100%;padding:.625rem .875rem;border:1px solid var(--line);border-radius:var(--radius-sm);font-size:.9375rem;color:var(--ink);background:var(--canvas)}.auth-form .field input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px #d81b601f}.auth-form .code-row{display:flex;gap:.5rem}.auth-form .code-row input{flex:1;min-width:0}.auth-form .code-btn{flex-shrink:0;border:1px solid var(--line);border-radius:var(--radius-sm);padding:0 .875rem;background:var(--canvas);color:var(--brand-ink);font-size:.8125rem;font-weight:600;cursor:pointer;white-space:nowrap}.auth-form .code-btn:disabled{color:var(--ink-3);cursor:not-allowed}.auth-form .form-error{margin:0 0 .75rem;font-size:.8125rem;color:#dc2626}.auth-form .submit-btn{width:100%;margin-top:.25rem;padding:.8125rem 1rem;border:none;border-radius:var(--radius-md);background:var(--brand);color:#fff;font-size:.9375rem;font-weight:600;cursor:pointer;box-shadow:var(--shadow-1)}.auth-form .submit-btn:hover:not(:disabled){background:var(--brand-ink)}.auth-form .submit-btn:disabled{opacity:.6;cursor:not-allowed}@keyframes auth-fade-in{0%{opacity:0}to{opacity:1}}@keyframes auth-slide-up{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}