@import"https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,300;1,9..40,400&family=DM+Mono:wght@400;500&display=swap";.about-section{max-width:1280px;margin:0 auto;padding:48px 28px 40px}.about-hero{display:grid;grid-template-columns:1fr 340px;gap:40px;align-items:center;margin-bottom:40px}.about-title{font-size:1.9rem;font-weight:700;line-height:1.3;letter-spacing:-.03em;color:var(--text-primary);margin-bottom:10px}.about-title-accent{color:var(--accent-soft)}.about-title-en{font-size:.82rem;color:var(--text-muted);font-family:var(--font-mono);margin-bottom:18px;line-height:1.5}.about-lead{font-size:.92rem;color:var(--text-secondary);line-height:1.8;max-width:560px}.about-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px}.stat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:18px 16px;text-align:center;transition:border-color var(--transition)}.stat-card:hover{border-color:var(--accent)}.stat-value{font-family:var(--font-mono);font-size:1.6rem;font-weight:500;color:var(--accent-soft);line-height:1;margin-bottom:6px}.stat-label{font-size:.8rem;font-weight:600;color:var(--text-primary);margin-bottom:3px}.stat-sub{font-size:.68rem;color:var(--text-muted);font-family:var(--font-mono)}.about-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.about-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px 18px;transition:border-color var(--transition),transform var(--transition)}.about-card:hover{border-color:var(--border-bright);transform:translateY(-2px)}.about-card.warning-card{border-color:#fbbf2440;background:#fbbf2408}.about-card-icon{font-size:1.4rem;margin-bottom:10px;display:block}.about-card-title{font-size:.85rem;font-weight:600;color:var(--text-primary);margin-bottom:10px;letter-spacing:-.01em}.about-card p{font-size:.78rem;color:var(--text-secondary);line-height:1.7}.section-divider{max-width:1280px;margin:0 auto 32px;padding:0 28px;display:flex;align-items:center;gap:16px}.section-divider:before,.section-divider:after{content:"";flex:1;height:1px;background:linear-gradient(90deg,transparent,var(--border),transparent)}.section-divider span{font-family:var(--font-mono);font-size:.72rem;color:var(--text-muted);letter-spacing:.1em;text-transform:uppercase;white-space:nowrap;padding:4px 14px;border:1px solid var(--border);border-radius:20px;background:var(--bg-deep)}.calc-section{max-width:1280px;margin:0 auto;padding:0 28px 48px}@media (max-width: 1100px){.about-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width: 768px){.about-hero{grid-template-columns:1fr}.about-stats{grid-template-columns:repeat(4,1fr)}.about-title{font-size:1.4rem}.about-section{padding:28px 16px 24px}.section-divider{padding:0 16px}.calc-section{padding:0 16px 40px}}@media (max-width: 540px){.about-grid{grid-template-columns:1fr}.about-stats{grid-template-columns:repeat(2,1fr)}}.app{display:flex;flex-direction:column;min-height:100vh}.app-header{border-bottom:1px solid var(--border);background:#09090fd9;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);position:sticky;top:0;z-index:100}.header-inner{max-width:1280px;margin:0 auto;padding:16px 28px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.header-brand{display:flex;align-items:center;gap:14px}.header-logo{width:44px;height:44px;border-radius:10px;background:var(--accent-dim);border:1px solid var(--accent);display:flex;align-items:center;justify-content:center;flex-shrink:0}.logo-icon{font-size:1.5rem;color:var(--accent-soft);line-height:1}.header-title{font-size:1.15rem;font-weight:600;letter-spacing:-.02em;color:var(--text-primary)}.header-sub{font-size:.75rem;color:var(--text-muted);font-family:var(--font-mono);margin-top:2px}.header-meta{display:flex;gap:8px;flex-wrap:wrap}.header-badge{font-family:var(--font-mono);font-size:.7rem;padding:3px 10px;border-radius:20px;background:var(--accent-dim);border:1px solid var(--border-bright);color:var(--text-secondary)}.app-main{flex:1;width:100%}.layout{display:grid;grid-template-columns:1fr 420px;gap:28px;align-items:start}.calc-layout{max-width:1280px;margin:0 auto;padding:0 28px 48px}.app-footer{text-align:center;padding:18px;font-size:.72rem;color:var(--text-muted);border-top:1px solid var(--border);font-family:var(--font-mono);letter-spacing:.03em}.progress-bar-wrap{display:flex;align-items:center;gap:12px;margin-bottom:20px}.progress-bar-inner{flex:1;height:4px;background:var(--border);border-radius:2px;overflow:hidden}.progress-bar-fill{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent-soft));border-radius:2px;transition:width .4s ease}.progress-label{font-size:.72rem;color:var(--text-muted);font-family:var(--font-mono);white-space:nowrap}.section-tabs{display:flex;gap:6px;flex-wrap:nowrap;margin-bottom:24px;overflow-x:auto;scrollbar-width:none}.section-tabs::-webkit-scrollbar{display:none}.section-tab{display:flex;align-items:center;gap:6px;padding:7px 14px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg-card);color:var(--text-secondary);font-family:var(--font-main);font-size:.82rem;cursor:pointer;transition:all var(--transition);flex:1;justify-content:center;white-space:nowrap}.section-tab:hover{border-color:var(--border-bright);color:var(--text-primary);background:var(--bg-hover)}.section-tab.active{border-color:var(--accent);background:var(--accent-dim);color:var(--accent-soft);box-shadow:0 0 0 1px var(--accent-dim)}.tab-icon{font-size:1rem}.tab-count{font-family:var(--font-mono);font-size:.65rem;padding:1px 6px;border-radius:10px;background:var(--bg-surface);color:var(--text-muted);margin-left:2px}.tab-count.done{background:var(--accent-dim);color:var(--accent-soft)}.fields-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}.form-field{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;transition:border-color .25s ease,background .25s ease,opacity .25s ease}.form-field.is-empty:hover{border-color:var(--border-bright);opacity:.85}.field-label{display:flex;flex-direction:column;gap:2px;margin-bottom:10px;cursor:default}.field-label-zh{font-size:.92rem;font-weight:500;color:var(--text-primary)}.field-label-en{font-size:.72rem;color:var(--text-muted);font-family:var(--font-mono)}.field-unit{color:var(--accent-soft)}.field-input{width:100%;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-primary);font-family:var(--font-mono);font-size:.9rem;padding:8px 12px;outline:none;transition:border-color var(--transition),box-shadow var(--transition);-moz-appearance:none;appearance:none;-webkit-appearance:none}.field-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-dim)}.field-select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%239090b0' d='M6 8L0 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ease}.field-filled-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-left:5px;vertical-align:middle;box-shadow:0 0 6px var(--accent)}.field-empty-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--border-bright);margin-left:5px;vertical-align:middle}.action-bar{display:flex;gap:12px;margin-top:24px;justify-content:flex-end}.btn-reset{padding:10px 22px;border-radius:var(--radius-sm);border:1px solid var(--border-bright);background:transparent;color:var(--text-secondary);font-family:var(--font-main);font-size:.88rem;cursor:pointer;transition:all var(--transition)}.btn-reset:hover{background:var(--bg-hover);color:var(--text-primary)}.btn-calc-wrap{display:flex;flex-direction:column;align-items:flex-end;gap:4px}.btn-calc-hint{font-size:.7rem;color:var(--text-muted);font-family:var(--font-mono)}.btn-calc{padding:10px 28px;border-radius:var(--radius-sm);border:1px solid var(--accent);background:var(--accent);color:#fff;font-family:var(--font-main);font-size:.92rem;font-weight:600;cursor:pointer;display:flex;align-items:center;gap:8px;transition:all var(--transition);box-shadow:0 0 20px var(--accent-glow)}.btn-calc:hover{background:var(--accent-soft);border-color:var(--accent-soft);box-shadow:0 0 32px var(--accent-glow);transform:translateY(-1px)}.btn-calc:active{transform:translateY(0)}.btn-calc.disabled{background:var(--bg-surface);border-color:var(--border);color:var(--text-muted);box-shadow:none;cursor:not-allowed;transform:none}.btn-calc-icon{font-size:.7rem}.result-col{position:sticky;top:96px;display:flex;flex-direction:column;gap:16px}.result-placeholder{background:var(--bg-card);border:1px dashed var(--border-bright);border-radius:var(--radius);padding:48px 24px;text-align:center;color:var(--text-muted);font-size:.88rem}.placeholder-hex{font-size:3rem;color:var(--border-bright);margin-bottom:12px;animation:pulse-ring 3s ease infinite;display:block}.placeholder-sub{font-size:.76rem;margin-top:6px;color:var(--text-muted);opacity:.7}.result-panel{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;gap:20px}.result-level-badge{display:flex;align-items:center;gap:12px;padding:14px 18px;border-radius:var(--radius-sm);border-width:1px;border-style:solid}.result-level-dot{width:12px;height:12px;border-radius:50%;flex-shrink:0;box-shadow:0 0 8px currentColor}.result-level-zh{font-size:1.1rem;font-weight:700;letter-spacing:-.01em}.result-level-en{font-size:.72rem;color:var(--text-secondary);font-family:var(--font-mono)}.result-cards{display:grid;grid-template-columns:1fr 1fr;gap:12px}.result-card{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:16px}.result-card-header{font-size:.78rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.06em;margin-bottom:8px;display:flex;flex-direction:column;gap:2px}.result-card-header span{font-size:.65rem;font-family:var(--font-mono);color:var(--text-muted);font-weight:400;text-transform:none;letter-spacing:0}.result-card-value{font-family:var(--font-mono);font-size:2rem;font-weight:500;line-height:1;margin-bottom:14px}.result-card-unit{font-size:1rem;opacity:.7}.risk-bar-wrap{display:flex;flex-direction:column;gap:6px}.risk-bar-row{display:flex;align-items:center;gap:8px}.risk-bar-label{font-size:.65rem;color:var(--text-muted);white-space:nowrap;width:44px;flex-shrink:0}.risk-bar-track{flex:1;height:5px;background:var(--border);border-radius:3px;overflow:hidden}.risk-bar-fill{height:100%;border-radius:3px;transition:width .6s cubic-bezier(.4,0,.2,1)}.risk-bar-fill.baseline{background:var(--border-bright)}.risk-bar-val{font-family:var(--font-mono);font-size:.65rem;white-space:nowrap;width:48px;text-align:right;flex-shrink:0}.risk-bar-val.muted{color:var(--text-muted)}.result-details{border-top:1px solid var(--border);padding-top:14px}.result-details summary{font-size:.76rem;color:var(--text-muted);cursor:pointer;font-family:var(--font-mono);-webkit-user-select:none;user-select:none;list-style:none}.result-details summary::-webkit-details-marker{display:none}.result-details summary:before{content:"▶ ";font-size:.6rem}.result-details[open] summary:before{content:"▼ "}.result-lp-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:10px}.result-lp-grid div{background:var(--bg-surface);border:1px solid var(--border);border-radius:6px;padding:10px 12px;display:flex;flex-direction:column;gap:4px}.result-lp-grid span{font-size:.65rem;color:var(--text-muted);font-family:var(--font-mono)}.result-lp-grid code{font-family:var(--font-mono);font-size:.78rem;color:var(--accent-soft)}.result-disclaimer{font-size:.7rem;color:var(--text-muted);line-height:1.5;border-top:1px solid var(--border);padding-top:14px}.info-cards{display:flex;flex-direction:column;gap:12px}.info-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;font-size:.8rem;color:var(--text-secondary);line-height:1.6}.info-card-title{font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.07em;color:var(--text-muted);margin-bottom:8px;font-family:var(--font-mono)}.how-to-list{padding-left:18px;display:flex;flex-direction:column;gap:6px;font-size:.8rem;color:var(--text-secondary);line-height:1.5}.how-to-list li::marker{color:var(--accent-soft);font-weight:600}.var-groups{display:flex;flex-direction:column;gap:7px}.var-group{display:flex;flex-direction:column;gap:2px}.var-group-label{font-size:.72rem;font-weight:600;color:var(--accent-soft);font-family:var(--font-mono)}.var-group-desc{font-size:.76rem;color:var(--text-secondary);line-height:1.5}.citation{font-size:.78rem;line-height:1.7;color:var(--text-secondary)}.disclaimer-card{border-color:#fbbf2440;background:#fbbf240a}.disclaimer-card .info-card-title{color:var(--risk-mid)}.disclaimer-card p{font-size:.78rem;color:var(--text-secondary);line-height:1.6}.risk-legend{display:flex;flex-direction:column;gap:6px}.risk-legend-item{display:flex;align-items:center;gap:8px;font-size:.82rem}.dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}.dot.low{background:var(--risk-low);box-shadow:0 0 6px var(--risk-low)}.dot.mid{background:var(--risk-mid);box-shadow:0 0 6px var(--risk-mid)}.dot.high{background:var(--risk-high);box-shadow:0 0 6px var(--risk-high)}@media (max-width: 900px){.layout{grid-template-columns:1fr}.result-col{position:static}.about-section{padding:20px 16px 24px}}@media (max-width: 540px){.result-cards,.fields-grid{grid-template-columns:1fr}.section-tabs{overflow-x:auto;flex-wrap:nowrap;padding-bottom:4px}.section-tab{flex-shrink:0}}:root{--bg-deep: #09090f;--bg-card: #111118;--bg-surface: #16161f;--bg-hover: #1c1c28;--border: #252535;--border-bright: #333348;--accent: #7b6ff0;--accent-soft: #a89cf7;--accent-dim: rgba(123, 111, 240, .15);--accent-glow: rgba(123, 111, 240, .35);--risk-low: #34d399;--risk-low-bg: rgba(52, 211, 153, .1);--risk-mid: #fbbf24;--risk-mid-bg: rgba(251, 191, 36, .1);--risk-high: #f87171;--risk-high-bg: rgba(248, 113, 113, .1);--text-primary: #e8e8f4;--text-secondary: #9090b0;--text-muted: #5a5a78;--font-main: "DM Sans", sans-serif;--font-mono: "DM Mono", monospace;--radius: 12px;--radius-sm: 8px;--transition: .2s ease}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-main);background:var(--bg-deep);color:var(--text-primary);line-height:1.6;min-height:100vh;background-image:radial-gradient(ellipse 80% 50% at 50% -10%,rgba(123,111,240,.12) 0%,transparent 60%),radial-gradient(ellipse 40% 30% at 85% 60%,rgba(80,160,240,.06) 0%,transparent 50%)}#root{min-height:100vh}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--bg-deep)}::-webkit-scrollbar-thumb{background:var(--border-bright);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}@keyframes fadeUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse-ring{0%{transform:scale(.95);opacity:.8}50%{transform:scale(1.05);opacity:.4}to{transform:scale(.95);opacity:.8}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}@keyframes spin{to{transform:rotate(360deg)}}.fade-up{animation:fadeUp .5s ease both}