:root{color-scheme:light;--bg: #f3f8f7;--surface: #ffffff;--surface-strong: #eaf4f1;--surface-elevated: #fbfdff;--text: #0f172a;--text-secondary: #344054;--muted: #64748b;--line: #d7e6e2;--primary: #16a085;--primary-strong: #087766;--primary-soft: #ddf7f0;--accent: #0f766e;--blue: #1d4ed8;--blue-soft: #e8f0ff;--amber: #ca8a04;--amber-soft: #fff7db;--red: #dc2626;--red-soft: #fee2e2;--green: #059669;--ink: #07131f;--ink-soft: #102437;--overlay: rgba(7, 19, 31, .54);--toast-bg: #07131f;--toast-fg: #ffffff;--input-bg: #ffffff;--input-border: #cbd5e1;--input-disabled: #98a2b3;--focus-ring: rgba(22, 160, 133, .12);--btn-primary-bg: linear-gradient(135deg, #16a085, #087766);--btn-primary-fg: #ffffff;--btn-primary-shadow: 0 14px 30px rgba(22, 160, 133, .18);--btn-secondary-bg: #e7f8f4;--btn-secondary-hover: #d9f3ee;--btn-secondary-border: #b7dfd7;--btn-ghost-bg: rgba(255, 255, 255, .8);--table-header-bg: #f5fbf9;--selection-bg: #ecfdf5;--danger-fg: #ef4444;--danger-soft: #fff7f7;--error-fg: 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a:nth-child(2){min-width:110px;background:linear-gradient(135deg,#16a085,#0f766e);color:#fff;text-align:center}.auth-nav a:only-child{min-width:110px;background:linear-gradient(135deg,#16a085,#0f766e);color:#fff;text-align:center}.auth-marquee{position:relative;z-index:1;max-width:1280px;margin:18px auto 0;overflow:hidden;border:1px solid rgba(183,223,215,.72);border-radius:14px;background:linear-gradient(90deg,#fffffff0,#eaf4f1e0),#fff;box-shadow:0 16px 46px #0f172a14}.auth-marquee:before,.auth-marquee:after{position:absolute;top:0;bottom:0;z-index:1;width:74px;content:"";pointer-events:none}.auth-marquee:before{right:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.98))}.auth-marquee:after{left:0;background:linear-gradient(90deg,rgba(255,255,255,.98),transparent)}.auth-marquee-track{display:flex;align-items:center;gap:clamp(18px,3vw,38px);width:max-content;min-height:52px;padding:10px 34px;color:#426071;white-space:nowrap;animation:authMarqueeGlide 9s ease-in-out 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#0f172a14;backdrop-filter:blur(16px)}.excel-playground:before{position:absolute;right:22px;bottom:18px;left:22px;height:2px;content:"";background:linear-gradient(90deg,transparent,rgba(15,118,110,.22),transparent)}.excel-file{position:relative;z-index:1;display:grid;width:82px;height:92px;align-content:end;gap:8px;justify-self:center;padding:12px;border:1px solid rgba(15,118,110,.24);border-radius:14px 18px 14px 14px;background:linear-gradient(135deg,#fffffff2,#ecfdf5f5),#fff;box-shadow:0 16px 32px #0f766e1f;color:#0f766e}.excel-file-a{grid-column:1;animation:excelFileThrowA 2.4s ease-in-out infinite}.excel-file-b{grid-column:3;animation:excelFileThrowB 2.4s ease-in-out infinite}.excel-corner{position:absolute;top:-1px;left:-1px;width:24px;height:24px;border:1px solid rgba(15,118,110,.2);border-radius:0 18px 0 10px;background:#d1fae5}.excel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:4px}.excel-grid 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rotate(-630deg)}to{left:110px;bottom:38px;transform:scale(1) rotate(-720deg)}}@keyframes excelFileThrowA{0%,to{transform:translateY(0) rotate(0)}7%{transform:translate(-8px,-5px) rotate(-5deg)}15%,84%{transform:translateY(0) rotate(0)}93%{transform:translate(-8px,-5px) rotate(-5deg)}}@keyframes excelFileThrowB{0%,to{transform:translateY(0) rotate(0)}43%{transform:translate(8px,-5px) rotate(5deg)}51%{transform:translateY(0) rotate(0)}57%{transform:translate(8px,-5px) rotate(5deg)}}@media (prefers-reduced-motion: reduce){.auth-gear-wheel,.auth-gear-arrows,.auth-cartoon-arc,.auth-cartoon-lane,.auth-cartoon-dot,.auth-cartoon-badge,.auth-marquee-track,.auth-image-card figcaption span,.excel-file,.excel-ball,.headline-robot-photo img{animation:none}}.auth-preview{position:relative;order:2;overflow:hidden;padding:18px;border:1px solid rgba(255,255,255,.16);border-radius:20px;background:linear-gradient(135deg,#ffffff29,#ffffff14),#081826d1;box-shadow:0 28px 80px 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