:root{color-scheme:dark;font-family:Avenir Next,Segoe UI,sans-serif;--bg-base: radial-gradient(circle at 18% 20%, rgba(37, 99, 235, .22), transparent 42%), radial-gradient(circle at 80% 10%, rgba(16, 185, 129, .16), transparent 34%), #0c1119;--landing-bg: radial-gradient(circle at 5% 12%, rgba(248, 113, 113, .18), transparent 34%), radial-gradient(circle at 88% 88%, rgba(56, 189, 248, .2), transparent 36%), repeating-linear-gradient( 130deg, rgba(148, 163, 184, .04), rgba(148, 163, 184, .04) 1px, transparent 1px, transparent 16px ), var(--bg-base);--text-primary: #e5e7eb;--text-strong: #f8fafc;--text-secondary: #cbd5e1;--text-muted: #94a3b8;--text-accent-soft: #dbeafe;--surface-raised: #1f2937;--surface-subtle: #131a24;--surface-overlay: #0f172a;--surface-overlay-strong: #020817;--surface-header: rgba(11, 19, 33, .74);--surface-panel: rgba(17, 24, 39, .86);--surface-panel-soft: rgba(10, 16, 28, .55);--surface-inset: rgba(8, 13, 22, .52);--surface-workspace: linear-gradient(160deg, rgba(16, 24, 38, .94), rgba(15, 22, 33, .9));--surface-landing-panel: linear-gradient(140deg, rgba(13, 20, 32, .88), rgba(17, 28, 45, .84));--surface-modal: radial-gradient(circle at top, rgba(14, 165, 233, .12), transparent 48%), linear-gradient(180deg, rgba(15, 23, 42, .96), rgba(11, 18, 31, .98));--surface-backdrop: rgba(2, 6, 23, .7);--border-default: #3f4858;--border-muted: #4b5563;--border-strong: #334155;--panel-border: #2f3a4b;--shadow-panel: 0 16px 40px rgba(7, 11, 18, .42);--shadow-elevated: 0 10px 30px rgba(2, 6, 23, .5);--checker-a: #1f1f1f;--checker-b: #272727;--motion-fast: .16s;--motion-base: .26s;--easing-standard: cubic-bezier(.2, .7, 0, 1)}:root[data-theme=light]{color-scheme:light;--bg-base: radial-gradient(circle at 18% 20%, rgba(59, 130, 246, .12), transparent 42%), radial-gradient(circle at 82% 10%, rgba(14, 165, 233, .1), transparent 34%), #eef4fa;--landing-bg: radial-gradient(circle at 8% 12%, rgba(248, 113, 113, .1), transparent 34%), radial-gradient(circle at 88% 88%, rgba(14, 165, 233, .12), transparent 36%), repeating-linear-gradient( 130deg, rgba(148, 163, 184, .08), rgba(148, 163, 184, .08) 1px, transparent 1px, transparent 16px ), var(--bg-base);--text-primary: #1f2937;--text-strong: #0f172a;--text-secondary: #475569;--text-muted: #64748b;--text-accent-soft: #1d4ed8;--surface-raised: #ffffff;--surface-subtle: #f8fafc;--surface-overlay: #ffffff;--surface-overlay-strong: #ffffff;--surface-header: rgba(255, 255, 255, .92);--surface-panel: rgba(255, 255, 255, .96);--surface-panel-soft: rgba(248, 251, 255, .92);--surface-inset: rgba(238, 244, 250, .96);--surface-workspace: linear-gradient(160deg, rgba(255, 255, 255, .94), rgba(248, 250, 252, .9));--surface-landing-panel: linear-gradient(140deg, rgba(255, 255, 255, .98), rgba(239, 245, 250, .96));--surface-modal: radial-gradient(circle at top, rgba(14, 165, 233, .08), transparent 48%), linear-gradient(180deg, rgba(255, 255, 255, .98), rgba(248, 250, 252, .98));--surface-backdrop: rgba(148, 163, 184, .35);--border-default: #cbd5e1;--border-muted: #94a3b8;--border-strong: #cbd5e1;--panel-border: #c8d6e6;--shadow-panel: 0 18px 44px rgba(100, 116, 139, .18);--shadow-elevated: 0 10px 32px rgba(100, 116, 139, .22);--checker-a: #dbe3ee;--checker-b: #eef3f9}*{box-sizing:border-box}body{margin:0;background:var(--bg-base);color:var(--text-primary);font-size:16px;transition:background var(--motion-base) var(--easing-standard),color var(--motion-fast) var(--easing-standard)}html:lang(zh) body{font-size:15px}button,input,select,.ui-button,.ui-input,.ui-select,.ui-checkbox{font:inherit}.ui-button{background:var(--surface-raised);color:var(--text-strong);border:1px solid var(--border-muted);border-radius:8px;padding:.4rem .7rem;cursor:pointer;transition:transform var(--motion-fast) var(--easing-standard),filter var(--motion-fast) var(--easing-standard),border-color var(--motion-fast) var(--easing-standard),background var(--motion-fast) var(--easing-standard),box-shadow 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var(--border-default);border-radius:8px;padding:.35rem .45rem;transition:border-color var(--motion-fast) var(--easing-standard),box-shadow var(--motion-fast) var(--easing-standard),background var(--motion-fast) var(--easing-standard)}.ui-input:focus-visible,.ui-select:focus-visible{outline:0;border-color:#38bdf8;box-shadow:0 0 0 2px #38bdf84d}.ui-select-trigger{width:100%;min-height:2.15rem;display:inline-flex;align-items:center;justify-content:space-between;gap:.45rem;text-align:start;font-size:.875rem;line-height:1;padding:.45rem .65rem;background:var(--surface-overlay);border-color:var(--border-strong)}.ui-select-trigger[data-placeholder]{color:var(--text-muted)}.ui-select-trigger[data-state=open]{border-color:#64748b}.ui-select-trigger[data-disabled]{opacity:.5;cursor:not-allowed}.ui-select-trigger--auto{width:auto}.ui-select__icon{color:var(--text-muted);display:inline-flex;align-items:center;justify-content:center;line-height:1;transition:transform var(--motion-fast) var(--easing-standard)}.ui-select-trigger[data-state=open] .ui-select__icon{transform:rotate(180deg)}.ui-select-content{z-index:60;min-width:var(--radix-select-trigger-width);max-height:min(280px,var(--radix-select-content-available-height));overflow:hidden;border:1px solid var(--border-strong);border-radius:8px;background:var(--surface-overlay-strong);box-shadow:var(--shadow-elevated);animation:ui-select-pop .12s ease-out}.ui-select-content--auto{min-width:0!important;width:auto!important;max-width:min(280px,calc(100vw - 2rem))!important}.ui-select-content--auto .ui-select-viewport{width:auto;display:block}.ui-select-content--auto .ui-select-item{display:flex;width:auto;min-width:100%;white-space:nowrap}.ui-tabs-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.45rem;border:1px solid var(--border-strong);border-radius:10px;background:var(--surface-overlay);padding:.3rem}.ui-tabs-trigger{border:1px solid 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.5rem;font-size:.875rem;line-height:1;color:var(--text-primary);-webkit-user-select:none;user-select:none;cursor:pointer}.ui-select-item[data-highlighted]{outline:0;background:var(--surface-raised);color:var(--text-strong)}.ui-select-item[data-state=checked]{color:var(--text-strong)}.ui-select-item[data-disabled]{opacity:.45;cursor:not-allowed}.ui-select-item__indicator{position:absolute;inset-inline-end:.45rem;color:var(--text-primary);display:inline-flex;align-items:center;justify-content:center}.ui-checkbox{width:1rem;height:1rem;margin:0;display:inline-flex;align-items:center;justify-content:center;border:1px solid #4b5563;border-radius:4px;background:var(--surface-subtle);color:var(--text-accent-soft);transition:border-color var(--motion-fast) var(--easing-standard),background var(--motion-fast) var(--easing-standard),box-shadow var(--motion-fast) 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auto;overflow:hidden}.app--landing{display:block;min-height:100vh;height:auto;overflow:auto}.app--workspace{min-height:100vh;height:100vh;overflow:hidden}.app--workspace .ui-button{padding:.3rem .55rem;font-size:.86rem;border-radius:7px}.app--workspace .ui-button--sm{padding:.2rem .42rem;font-size:.78rem}.app--workspace .ui-button--lg{padding:.42rem .72rem;font-size:.92rem}.app--workspace 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.82));--landing-header-username-color-mid: #fff8d6;--landing-header-username-shadow-mid: inset 0 1px 0 rgba(255, 248, 200, .18), 0 10px 24px rgba(120, 84, 8, .22);--landing-header-username-border-pro: rgba(245, 200, 66, .42);--landing-header-username-bg-pro: linear-gradient(135deg, rgba(118, 80, 8, .55), rgba(66, 42, 5, .78));--landing-header-username-color-pro: #fff3bf;--landing-header-username-shadow-pro: inset 0 1px 0 rgba(255, 244, 194, .16), 0 8px 18px rgba(0, 0, 0, .18);display:inline-block;max-width:min(44vw,260px);padding:.5rem .88rem .46rem;border-radius:999px;border:1px solid var(--landing-header-username-border-base);background:var(--landing-header-username-bg-base);color:var(--landing-header-username-color-base);box-shadow:var(--landing-header-username-shadow-base);white-space:nowrap;text-overflow:ellipsis;overflow:hidden;font-size:.88rem;font-weight:700;letter-spacing:.01em}.landing-header__username--pro{animation:landing-header-username-pro-reveal .72s cubic-bezier(.22,1,.36,1) forwards}.landing-header__plan-badge{position:absolute;top:-.36rem;left:.55rem;z-index:1;display:inline-flex;align-items:center;flex-shrink:0;padding:.14rem .34rem;border-radius:.42rem;background:linear-gradient(135deg,#ffe08a,#d4a11d);color:#4a3202;box-shadow:0 6px 14px #78540838,inset 0 1px #ffffff75;font-size:.58rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase;opacity:0;transform:translateY(-.22rem) scale(.86)}.landing-header__plan-badge--visible{animation:landing-header-plan-badge-reveal .42s cubic-bezier(.22,1,.36,1) .14s forwards}.landing-header__login{border-radius:999px;border-color:#2563eb;background:linear-gradient(135deg,#2563eb,#0ea5e9);color:#eff6ff;padding:.5rem .95rem;font-weight:600}.landing-header__login:hover:not(:disabled){filter:brightness(1.08)}.landing-header__buy-pro{border-radius:999px;border-color:#60a5fa70;background:linear-gradient(135deg,#2563eb,#0ea5e9 52%,#22d3ee);color:#eff6ff;box-shadow:0 12px 24px #0ea5e93d;animation:landing-header-buy-pro-reveal .52s cubic-bezier(.22,1,.36,1) both}.landing-header__buy-pro:hover:not(:disabled){border-color:#93c5fdb8}.landing-header__logout{border-radius:999px;padding:.48rem .85rem;font-weight:600}@keyframes landing-header-username-pro-reveal{0%{border-color:var(--landing-header-username-border-base);background:var(--landing-header-username-bg-base);color:var(--landing-header-username-color-base);box-shadow:var(--landing-header-username-shadow-base)}55%{border-color:var(--landing-header-username-border-mid);background:var(--landing-header-username-bg-mid);color:var(--landing-header-username-color-mid);box-shadow:var(--landing-header-username-shadow-mid)}to{border-color:var(--landing-header-username-border-pro);background:var(--landing-header-username-bg-pro);color:var(--landing-header-username-color-pro);box-shadow:var(--landing-header-username-shadow-pro)}}@keyframes landing-header-plan-badge-reveal{0%{opacity:0;transform:translateY(-.22rem) scale(.86)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes landing-header-buy-pro-reveal{0%{opacity:0;transform:translateY(-.18rem) scale(.94);filter:saturate(.78) brightness(.92)}to{opacity:1;transform:translateY(0) scale(1);filter:saturate(1) brightness(1)}}.auth-modal{position:fixed;top:0;right:0;bottom:0;left:0;z-index:120;display:flex;align-items:center;justify-content:center;padding:1.25rem}.auth-modal__backdrop{position:absolute;top:0;right:0;bottom:0;left:0;background:var(--surface-backdrop);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.auth-modal__panel{position:relative;width:min(100%,610px);max-height:min(92vh,860px);overflow-y:auto;padding:1.5rem;border:1px solid rgba(96,165,250,.24);border-radius:24px;background:var(--surface-modal);box-shadow:var(--shadow-panel)}.auth-modal__header{display:flex;align-items:flex-start;justify-content:space-between;gap:1rem}.auth-modal__title{margin:0;color:var(--text-strong);font-size:1.75rem}.auth-modal__description{margin:.45rem 0 0;color:var(--text-secondary);font-size:1rem;line-height:1.5}.auth-modal__close{flex-shrink:0;width:2.1rem;height:2.1rem;padding:0;display:inline-flex;align-items:center;justify-content:center}.auth-modal__body{display:flex;flex-direction:column;margin-top:1rem;gap:1rem}.auth-modal__field{gap:.68rem}.auth-modal__section .auth-modal__field+.auth-modal__field{margin-top:.9rem}.auth-modal__section{border:1px solid rgba(71,85,105,.45);border-radius:14px;padding:1rem;background:var(--surface-panel-soft)}.auth-modal__tabs{display:block}.auth-modal__divider{margin:.95rem 0;text-align:center;color:var(--text-muted);font-size:.95rem}.auth-modal__actions{display:grid;gap:.75rem;margin-top:.75rem}.auth-modal__actions--dual{grid-template-columns:repeat(2,minmax(0,1fr))}.auth-modal__google-btn{width:100%;border-radius:10px;padding:.8rem .95rem;border-color:#38bdf8;background:linear-gradient(135deg,#2563eb,#38bdf8);color:#eff6ff;font-size:1rem;font-weight:700}.auth-modal__google-btn:hover:not(:disabled){filter:brightness(1.12)}.auth-modal__google-brand{display:inline-flex;align-items:center;gap:.5rem;margin-bottom:.7rem;color:var(--text-accent-soft);font-weight:700;letter-spacing:.01em}.auth-modal__google-g{width:1.45rem;height:1.45rem;border-radius:50%;border:1px solid rgba(148,163,184,.45);display:inline-flex;align-items:center;justify-content:center;color:var(--text-strong);font-size:.88rem;background:radial-gradient(circle at 30% 30%,#60a5fa47,#1e293be6)}.auth-modal__google-brand-text{font-size:.95rem}.auth-modal__google-hint{margin:.65rem 0 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