:root{--bg:#f5f5f5;--paper:#ffffff;--ink:#1f2937;--muted:#5b6475;--brand:#FF5203;--brand-soft:#ffede6;--line:#e5e7eb;--radius:14px;--radius-lg:16px;--radius-sm:10px;--radius-xs:6px;--surface:#ffffff;--surface-alpha:rgba(255,255,255,0.82);--shadow-soft:rgba(0,0,0,0.04);--shadow-modal:rgba(15,23,42,0.18);--shadow-brand:rgba(255,82,3,0.12);--overlay:rgba(15,23,42,0.45);--success:#059669;--success-soft:rgba(16,185,129,0.12);--warning:#d97706;--warning-soft:rgba(245,158,11,0.12);--danger:#e53e3e;--danger-soft:rgba(229,62,62,0.06);--nav-text:#3f3f3f;--nav-text-hover:#111827;--nav-text-active:#181e25;--nav-hover:rgba(0,0,0,0.03);--nav-active:rgba(0,0,0,0.06);--highlight:#fff3ce;--highlight-soft:#fff7df;--highlight-text:#7c5b12}[data-theme=dark]{--bg:#0b0d11;--paper:#16181d;--ink:#e2e8f0;--muted:#94a3b8;--brand:#FF5203;--brand-soft:rgba(255,82,3,0.15);--line:#2d3748;--surface:#1a1d26;--surface-alpha:#16181d;--shadow-soft:rgba(0,0,0,0.25);--shadow-modal:rgba(0,0,0,0.4);--shadow-brand:rgba(255,82,3,0.12);--overlay:rgba(0,0,0,0.6);--success:#34d399;--success-soft:rgba(52,211,153,0.15);--warning:#fbbf24;--warning-soft:rgba(251,191,36,0.15);--danger:#f87171;--danger-soft:rgba(248,113,113,0.12);--nav-text:#a1a1aa;--nav-text-hover:#e2e8f0;--nav-text-active:#f1f5f9;--nav-hover:rgba(255,255,255,0.06);--nav-active:rgba(255,255,255,0.08);--highlight:#422006;--highlight-soft:#1c1917;--highlight-text:#fbbf24}html{scroll-behavior:smooth}::selection{background:var(--brand-soft);color:var(--brand)}*{box-sizing:border-box}body{margin:0;font-family:Noto Sans SC,PingFang SC,Hiragino Sans GB,sans-serif;letter-spacing:.01em;color:var(--ink);background:var(--paper);transition:background-color .3s ease,color .3s ease;overscroll-behavior:none}a{color:inherit}h1,h2,h3{text-wrap:balance}.app-shell{position:relative;max-width:1440px;margin:0 auto;min-height:100vh}.topbar{position:fixed;top:0;left:0;right:0;z-index:100;border-bottom:1px solid var(--line);background:var(--surface-alpha);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);transition:background-color .3s ease,border-color .3s ease}.topbar-inner{justify-content:space-between;gap:16px;padding:16px 32px;margin:0 auto;width:100%}.brand,.topbar-inner{display:flex;align-items:center;white-space:nowrap}.brand{gap:8px;font-size:1.05rem;font-weight:700;color:var(--ink);letter-spacing:-.02em}.brand-logo{width:26px;height:26px;border-radius:8px;object-fit:cover}.nav{display:flex;flex-wrap:nowrap;align-items:center;gap:4px}.nav-link{text-decoration:none;padding:8px 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var(--shadow-modal);padding:8px;z-index:200}.nav-dropdown-link{display:block;width:100%;padding:10px 16px;border:none;border-radius:8px;background:transparent;color:var(--ink);font-size:.95rem;font-weight:500;text-align:left;cursor:pointer;transition:background-color .15s ease}.nav-dropdown-link:hover{background:var(--nav-hover)}.nav-cta{cursor:pointer;font:inherit;padding:8px 24px;border-radius:999px;border:1px solid var(--line);background:var(--ink);color:var(--surface);font-size:.92rem;font-weight:600;transition:transform .15s ease,box-shadow .15s ease,background-color .15s ease}.nav-cta:active{transform:translateY(0) scale(.97);box-shadow:0 2px 8px var(--shadow-soft)}.nav-cta:focus-visible,.nav-link:focus-visible,.theme-toggle:focus-visible{outline:2px solid var(--brand);outline-offset:2px}.topbar-controls{gap:6px}.topbar-controls,.topbar-right{display:flex;align-items:center}.topbar-right{gap:16px}.user-menu{position:relative}.user-menu-trigger{cursor:pointer;border:1px solid var(--line);border-radius:999px;width:36px;height:36px;padding:7px;background:var(--surface);color:var(--ink);display:flex;align-items:center;justify-content:center;transition:background-color .15s ease,border-color .15s ease}.user-menu-trigger:hover{background:var(--nav-hover)}.user-menu-trigger:active{transform:scale(.95)}.user-menu-trigger:focus-visible{outline:2px solid var(--brand);outline-offset:2px}.user-menu-avatar{width:100%;height:100%;border-radius:50%;object-fit:cover}.user-menu-avatar-initial{display:inline-flex;align-items:center;justify-content:center;background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600;line-height:1}.user-menu-header-avatar{width:32px;height:32px;border-radius:50%;object-fit:cover;flex-shrink:0}.user-menu-dropdown{position:absolute;top:calc(100% + 8px);right:0;min-width:180px;padding:6px 0;border-radius:12px;border:1px solid var(--line);background:var(--paper);box-shadow:0 12px 32px var(--shadow-modal);z-index:500;animation:user-menu-pop .15s ease-out}@keyframes user-menu-pop{0%{opacity:0;transform:translateY(-4px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}.user-menu-header{display:flex;align-items:center;justify-content:center;gap:10px;padding:10px 14px}.user-menu-name{font-size:.9rem;font-weight:600;color:var(--ink);text-align:center}.user-menu-divider{height:1px;background:var(--line);margin:4px 0}.user-menu-item{display:flex;align-items:center;gap:10px;width:100%;padding:9px 14px;border:none;background:none;font:inherit;font-size:.88rem;color:var(--ink);text-decoration:none;cursor:pointer;transition:background-color .12s ease,color .12s ease}.user-menu-item:hover{background:var(--brand-soft);color:var(--brand)}.user-menu-item:focus-visible{outline:2px solid var(--brand);outline-offset:-2px}.user-menu-item-icon{width:16px;height:16px;flex-shrink:0;opacity:.6}.user-menu-item:hover 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ease}.theme-toggle:hover{background:var(--nav-hover)}.theme-toggle:active{transform:scale(.95)}.theme-toggle svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.auth-modal-backdrop{position:fixed;inset:0;z-index:1000;display:grid;place-items:center;padding:20px;background:rgba(15,23,42,.45);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.auth-modal{margin:0;width:min(460px,100%);padding:18px;box-shadow:0 18px 42px rgba(15,23,42,.24);animation:modal-pop .18s ease-out}.auth-modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.auth-modal-header h2{margin:0;font-size:1.15rem}.auth-modal-close{cursor:pointer;border:1px solid var(--line);border-radius:8px;padding:6px 10px;color:var(--muted);background:var(--surface)}.auth-modal-form{margin-top:14px}@keyframes modal-pop{0%{opacity:0;transform:translateY(8px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}.main-content{max-width:1080px;margin:0 auto;padding:30px 20px 56px}.app-layout-wrapper{display:flex}.app-layout-sidebar{background:var(--paper);border-right:1px solid var(--line)}.app-layout-right,.app-layout-sidebar{position:-webkit-sticky;position:sticky;top:60px;width:var(--aside-w);flex-shrink:0;height:calc(100vh - 60px);overflow-y:auto;z-index:50}.app-layout-right{padding:24px 24px 60px 0}.app-layout-backdrop,.app-layout-toggle,.app-layout-toggle-wrap{display:none}@media (max-width:1152px){.app-layout-right{display:none}}@media (max-width:860px){.topbar-inner{padding:16px;gap:8px}.nav{display:none}.nav-dropdown{display:block;position:relative}.nav-dropdown-trigger{min-width:0;width:32px;height:32px;padding:0;border:none;border-radius:6px}.nav-dropdown-trigger,.nav-dropdown-trigger:hover{background:transparent}.app-layout-toggle-wrap{display:flex;align-items:center;gap:8px;position:fixed;top:60px;left:0;right:0;z-index:99;padding:12px 16px 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24px}.site-footer-mobile{display:none;margin:0 auto 40px;max-width:1200px;height:32px;align-items:center}@media (max-width:768px){.site-footer-mobile{display:flex}}.site-footer-mobile-logo{height:26px;width:26px;border-radius:8px;margin-right:8px}.site-footer-mobile-brand{font-size:12px;line-height:32px;color:var(--ink)}.site-footer-mobile-spacer{flex-grow:1}.site-footer-mobile-link{cursor:pointer;font-size:10px;line-height:32px;font-weight:300;color:var(--muted);text-decoration:none}.site-footer-mobile-link:hover{color:var(--brand)}.site-footer-mobile-terms{display:none;margin:64px auto 0;max-width:1200px;height:32px;align-items:center;justify-content:space-between}@media (max-width:768px){.site-footer-mobile-terms{display:flex}}.site-footer-inner{max-width:1200px;margin:0 auto;display:flex;gap:48px;flex-wrap:wrap}.site-footer-brand{flex:1 1;min-width:200px}.site-footer-logo{font-size:1.05rem;font-weight:700;color:var(--ink);margin-bottom:8px}.site-footer-desc{font-size:.85rem;color:var(--muted);line-height:1.6;margin:0;max-width:280px}.site-footer-links{display:flex;gap:48px;flex-wrap:wrap}.site-footer-col{display:flex;flex-direction:column;gap:8px;min-width:100px}.site-footer-col-title{font-size:.82rem;font-weight:600;color:var(--ink);margin-bottom:4px}.site-footer-col a{font-size:.85rem;color:var(--muted);text-decoration:none;transition:color .15s ease}.site-footer-col a:hover{color:var(--brand)}.site-footer-bottom{max-width:1200px;margin:0 auto;font-size:.8rem;color:var(--muted);text-align:center}.site-footer-bottom p{margin:0 0 8px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:center}.site-footer-bottom a{color:var(--muted);text-decoration:none}.site-footer-bottom a:hover{color:var(--brand)}.site-footer-licenses{gap:16px}.site-footer-licenses a{white-space:nowrap}@media (max-width:640px){.site-footer{padding:32px 20px 20px}.site-footer-inner{flex-direction:column;gap:28px}.site-footer-links{gap:28px}}.landing{overflow-x:hidden}.landing section{mask-image:linear-gradient(90deg,transparent 0,black 4%,black 96%,transparent);-webkit-mask-image:linear-gradient(90deg,transparent 0,black 4%,black 96%,transparent)}.landing-hero{position:relative;padding:100px 24px 88px;text-align:left;overflow:hidden}.landing-hero:before{top:-20%;right:-10%;width:600px;height:600px;background:radial-gradient(circle,var(--brand-soft) 0,transparent 70%);opacity:.7}.landing-hero:after,.landing-hero:before{content:"";position:absolute;border-radius:50%;pointer-events:none}.landing-hero:after{bottom:-30%;left:-5%;width:400px;height:400px;background:radial-gradient(circle,var(--shadow-brand) 0,transparent 70%);opacity:.5}.landing-hero-inner{position:relative;max-width:720px;margin:0 auto}.landing-hero-title{margin:0 0 20px;font-size:clamp(2rem,5vw,3.2rem);font-weight:800;line-height:1.15;letter-spacing:-.03em;color:var(--ink)}.landing-hero-desc{margin:0 0 36px;font-size:clamp(1rem,2vw,1.15rem);line-height:1.7;color:var(--muted);max-width:560px}.landing-hero-actions{display:flex;gap:12px;justify-content:flex-start;flex-wrap:wrap}.landing-btn{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;font:inherit;font-size:.95rem;font-weight:600;border-radius:999px;padding:12px 28px;transition:transform .15s ease,box-shadow .15s ease,background-color .15s ease,border-color .15s ease;cursor:pointer}.landing-btn-primary{background:var(--brand);color:#fff;border:none;box-shadow:0 4px 16px rgba(255,82,3,.25)}.landing-btn:active{transform:scale(.97)}.landing-btn-primary:hover{box-shadow:0 8px 24px rgba(255,82,3,.35);filter:brightness(1.1)}[data-theme=dark] .landing-btn-primary{box-shadow:0 4px 16px rgba(255,82,3,.2)}[data-theme=dark] .landing-btn-primary:hover{box-shadow:0 8px 24px rgba(255,82,3,.3)}.landing-btn-secondary{background:transparent;color:var(--ink);border:1px solid var(--line)}.landing-btn-secondary:hover{border-color:var(--brand);background:var(--brand-soft)}.landing-features{padding:88px 24px 96px;background:linear-gradient(180deg,var(--paper) 0,var(--bg) 100%);border-top:1px solid var(--line);border-bottom:1px solid var(--line);transition:background-color .3s ease,border-color .3s ease}.landing-features-inner{max-width:960px;margin:0 auto}.landing-section-title{text-align:center;margin:0 0 40px;font-size:1.6rem;font-weight:700;color:var(--ink);letter-spacing:-.02em}.landing-feature-grid{display:grid;grid-template-columns:repeat(2,1fr);grid-gap:20px;gap:20px}.landing-feature-card-large{grid-column:span 2;display:grid;grid-template-columns:auto 1fr;grid-gap:20px;gap:20px;align-items:center}.landing-feature-card{padding:28px 24px;border-radius:var(--radius);border:1px solid var(--line);background:var(--surface);box-shadow:0 4px 16px var(--shadow-soft);transition:transform .2s ease,box-shadow .2s ease,background-color .3s ease,border-color .3s ease}.landing-feature-card:hover{box-shadow:0 12px 32px var(--shadow-brand);border-color:var(--brand)}.landing-feature-icon{width:40px;height:40px;border-radius:10px;background:var(--brand-soft);display:flex;align-items:center;justify-content:center;margin-bottom:16px;color:var(--brand)}.landing-feature-icon svg{width:20px;height:20px}.landing-feature-card h3{margin:0 0 8px;font-size:1.05rem;font-weight:600;color:var(--ink)}.landing-feature-card p{margin:0;font-size:.88rem;line-height:1.65;color:var(--muted)}.landing-cta{padding:88px 24px 96px;text-align:center;background:linear-gradient(135deg,var(--brand-soft) 0,transparent 50%,var(--shadow-brand) 100%);position:relative}.landing-cta:before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--brand),transparent)}.landing-cta-inner{max-width:560px;margin:0 auto}.landing-cta h2{margin:0 0 12px;font-size:1.8rem;font-weight:700;color:var(--ink);letter-spacing:-.02em}.landing-cta p{margin:0 0 28px;font-size:1rem;line-height:1.65;color:var(--muted)}.landing-cta .landing-btn-primary:hover{box-shadow:0 12px 32px rgba(255,82,3,.4)}@media (max-width:640px){.landing-hero{padding:56px 16px 48px}.landing-hero-title{font-size:1.75rem}.landing-feature-grid{grid-template-columns:1fr}.landing-feature-card-large{grid-column:span 1;grid-template-columns:1fr}.landing-cta{padding:56px 16px 64px}}.page h1{margin:0 0 10px;font-size:clamp(1.5rem,3vw,2.2rem)}.page p{margin:0;line-height:1.65;color:var(--muted)}.page-narrow{max-width:520px}.card-grid{margin-top:22px;display:grid;grid-gap:14px;gap:14px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.card{margin-top:18px;padding:16px;border-radius:var(--radius);background:var(--paper);transition:background-color .3s ease}.card h3{margin:0 0 8px;font-size:1.05rem}.form{display:grid;grid-gap:12px;gap:12px}.form label{display:grid;grid-gap:6px;gap:6px;color:var(--ink)}.form input{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px 12px;background:var(--surface);color:var(--ink);transition:background-color .3s ease,border-color .3s ease}.form button{cursor:pointer;border:0;border-radius:10px;padding:11px 14px;color:#fff;background:var(--brand);font-weight:600}:root{--aside-w:288px}.app-layout-main{flex:1 1;min-width:0;padding:32px 40px 60px}.sidebar{padding:24px 32px;transition:background-color .3s ease,border-color .3s ease}.sidebar-section{margin-bottom:4px}.sidebar-section-header{font-size:.9rem;font-weight:600;padding:16px 0}.sidebar-section-header,.sidebar-section-header-sub{display:flex;align-items:center;justify-content:space-between;width:100%;text-align:left;border:none;background:transparent;color:var(--ink);border-radius:6px;transition:background-color .2s ease}.sidebar-section-header-sub{font-size:.82rem;font-weight:400;cursor:pointer;text-transform:capitalize;padding:8px 4px;margin:2px 0}.sidebar-section-header-sub:hover{background:var(--nav-hover)}.sidebar-chevron{color:var(--muted);transform:rotate(0deg);transition:transform .2s ease;flex-shrink:0}.sidebar-chevron-open{transform:rotate(90deg)}.sidebar-chevron-sm{width:14px;height:14px}.sidebar-items{margin-bottom:16px}.sidebar-item{display:block;text-decoration:none;padding:8px;margin:2px 0;border-radius:6px;font-size:.88rem;color:var(--muted);position:relative;transition:color .15s ease,background-color .15s 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