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8)}.sm\:text-4xl{font-size:var(--text-4xl);line-height:var(--tw-leading,var(--text-4xl--line-height))}.sm\:text-base{font-size:var(--text-base);line-height:var(--tw-leading,var(--text-base--line-height))}.sm\:text-sm{font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height))}}@media(min-width:48rem){.md\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.md\:grid-cols-6{grid-template-columns:repeat(6,minmax(0,1fr))}}}:root{--bg-body:#080b12;--bg-surface:#0f1523;--bg-surface-elevated:#161e31;--bg-surface-card:#161e31bf;--bg-surface-alt:#161e31;--bg-input:#0b101c;--bg-header:#0f1523d9;--border-subtle:#1e293b;--border-color:#1e293b;--border-focus:#38bdf8;--border-accent:#0ea5e9;--text-primary:#f8fafc;--text-secondary:#94a3b8;--text-muted:#64748b;--text-highlight:#38bdf8;--accent-cyan:#00d4ff;--accent-cyan-glow:#00d4ff40;--accent-amber:#f59e0b;--accent-amber-glow:#f59e0b33;--accent-emerald:#10b981;--accent-emerald-glow:#10b98133;--accent-rose:#f43f5e;--accent-purple:#a855f7;--font-sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono:"JetBrains Mono", "Fira Code", Consolas, monospace;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-xl:24px;--shadow-sm:0 1px 3px #0000004d;--shadow-md:0 4px 14px #0006;--shadow-lg:0 10px 30px #00000080;--shadow-glow:0 0 25px #00d4ff26;--transition:all .2s cubic-bezier(.16, 1, .3, 1);--transition-fast:.15s ease;--transition-normal:.25s ease}[data-theme=light]{--bg-body:#f8fafc;--bg-surface:#fff;--bg-surface-elevated:#f1f5f9;--bg-surface-card:#fffffff2;--bg-surface-alt:#f1f5f9;--bg-input:#fff;--bg-header:#ffffffe0;--border-subtle:#e2e8f0;--border-color:#e2e8f0;--border-focus:#0284c7;--border-accent:#0284c7;--text-primary:#0f172a;--text-secondary:#334155;--text-muted:#64748b;--text-highlight:#0284c7;--accent-cyan:#0284c7;--accent-cyan-glow:#0284c726;--accent-amber:#d97706;--accent-amber-glow:#d9770626;--accent-emerald:#059669;--accent-emerald-glow:#05966926;--accent-rose:#e11d48;--accent-purple:#9333ea;--shadow-sm:0 1px 3px #0000000f;--shadow-md:0 4px 14px #00000014;--shadow-lg:0 10px 30px #0000001a;--shadow-glow:0 10px 25px #0284c714}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;font-size:16px}body{font-family:var(--font-sans);background-color:var(--bg-body);color:var(--text-primary);-webkit-font-smoothing:antialiased;min-height:100vh;line-height:1.65;overflow-x:hidden}.bg-grid-overlay{pointer-events:none;z-index:0;background-image:radial-gradient(circle at 50% 0,#00d4ff14,#0000 60%),radial-gradient(circle at 90% 40%,#a855f70a,#0000 50%),linear-gradient(90deg,#ffffff04 1px,#0000 1px),linear-gradient(#ffffff04 1px,#0000 1px);background-size:100% 100%,100% 100%,40px 40px,40px 40px;position:fixed;inset:0}.container{z-index:1;width:100%;max-width:1240px;margin:0 auto;padding:0 24px;position:relative}h1,h2,h3,h4{color:var(--text-primary);letter-spacing:-.02em;font-weight:700;line-height:1.25}h1{margin-bottom:16px;font-size:clamp(2rem,4vw,3rem)}h2{border-bottom:1px solid var(--border-subtle);margin-top:56px;margin-bottom:20px;padding-bottom:12px;font-size:clamp(1.4rem,2.5vw,2rem);position:relative}h2:before{content:"";background:linear-gradient(90deg,var(--accent-cyan),transparent);width:60px;height:2px;position:absolute;bottom:-1px;left:0}h3{color:var(--text-primary);margin-top:28px;margin-bottom:12px;font-size:1.25rem}p{color:var(--text-secondary);margin-bottom:16px;font-size:1rem}a{color:var(--text-highlight);transition:var(--transition);text-decoration:none}a:hover{color:var(--accent-cyan);text-decoration:underline}code,.mono{font-family:var(--font-mono);background:var(--bg-surface-elevated);border-radius:var(--radius-sm);border:1px solid var(--border-subtle);color:var(--accent-cyan);padding:2px 6px;font-size:.9em}.badge{text-transform:uppercase;letter-spacing:.05em;color:var(--accent-cyan);background:#00d4ff1a;border:1px solid #00d4ff40;border-radius:9999px;align-items:center;gap:6px;padding:4px 10px;font-size:.75rem;font-weight:600;display:inline-flex}.badge-amber{color:var(--accent-amber);background:#f59e0b1a;border-color:#f59e0b4d}.badge-emerald{color:var(--accent-emerald);background:#10b9811a;border-color:#10b9814d}.badge-rose{color:var(--accent-rose);background:#f43f5e1a;border-color:#f43f5e4d}header.site-header{border-bottom:1px solid var(--border-subtle);background:var(--bg-header);-webkit-backdrop-filter:blur(12px);z-index:100;padding:14px 0;transition:background-color .2s,border-color .2s,box-shadow .2s;position:sticky;top:0}[data-theme=light] header.site-header{background:#ffffffeb;border-bottom:1px solid #e2e8f0;box-shadow:0 1px 8px #0000000d}.nav-wrapper{justify-content:space-between;align-items:center;gap:20px;display:flex}.brand-logo{color:var(--text-primary);letter-spacing:-.01em;align-items:center;gap:12px;font-size:1.15rem;font-weight:800;text-decoration:none;display:flex}.brand-icon{border-radius:var(--radius-md);color:#fff;width:36px;height:36px;box-shadow:0 0 15px var(--accent-cyan-glow);background:linear-gradient(135deg,#0ea5e9,#0284c7);justify-content:center;align-items:center;display:flex}.nav-links{align-items:center;gap:24px;list-style:none;display:flex}.nav-links a{color:var(--text-secondary);border-radius:var(--radius-sm);padding:6px 10px;font-size:.9rem;font-weight:500;text-decoration:none}.nav-links a:hover{color:var(--text-primary);background:var(--bg-surface-elevated)}.nav-actions{align-items:center;gap:12px;display:flex}.theme-toggle-btn,.btn-secondary,.btn-primary{border-radius:var(--radius-md);cursor:pointer;transition:var(--transition);border:1px solid #0000;justify-content:center;align-items:center;gap:8px;padding:8px 16px;font-size:.875rem;font-weight:600;text-decoration:none;display:inline-flex}.theme-toggle-btn{background:var(--bg-surface-elevated);border-color:var(--border-subtle);color:var(--text-secondary);border-radius:var(--radius-md);width:38px;height:38px;padding:8px}.theme-toggle-btn:hover{color:var(--text-primary);border-color:var(--border-focus)}.hero-section{text-align:center;padding:48px 0 24px}.hero-eyebrow{justify-content:center;align-items:center;gap:12px;margin-bottom:16px;display:flex}.hero-title{max-width:900px;margin:0 auto 16px}.hero-title span.glow-text{-webkit-text-fill-color:transparent;background:linear-gradient(135deg,#38bdf8,#818cf8,#c084fc);-webkit-background-clip:text}.hero-subtitle{max-width:760px;color:var(--text-secondary);margin:0 auto 32px;font-size:1.15rem}.calculator-container{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg),var(--shadow-glow);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);margin-bottom:60px;position:relative;overflow:hidden}.calc-mode-nav{background:var(--bg-surface-elevated);border-bottom:1px solid var(--border-subtle);grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:6px;padding:8px;display:grid}.mode-tab{border-radius:var(--radius-md);color:var(--text-secondary);font-family:var(--font-sans);cursor:pointer;transition:var(--transition);text-align:center;background:0 0;border:1px solid #0000;justify-content:center;align-items:center;gap:6px;width:100%;padding:10px 8px;font-size:.82rem;font-weight:600;display:flex}.mode-tab:hover{color:var(--text-primary);background:#ffffff0d}[data-theme=light] .mode-tab:hover{background:#0000000a}.mode-tab.active{background:var(--bg-surface);color:var(--accent-cyan);border-color:var(--border-subtle);box-shadow:var(--shadow-sm)}.mode-tab-num{background:var(--border-subtle);width:20px;height:20px;color:var(--text-secondary);border-radius:50%;justify-content:center;align-items:center;font-size:.72rem;display:inline-flex}.mode-tab.active .mode-tab-num{background:var(--accent-cyan);color:#080b12;font-weight:700}.calc-config-bar{background:var(--bg-surface-elevated);border-bottom:1px solid var(--border-subtle);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding:14px 24px;display:flex}.config-group{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.config-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;font-size:.8rem;font-weight:600}.select-input,.text-input{background:var(--bg-input);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);color:var(--text-primary);font-family:var(--font-sans);transition:var(--transition);outline:none;padding:6px 12px;font-size:.85rem}.select-input:focus,.text-input:focus{border-color:var(--border-focus);box-shadow:0 0 0 2px var(--accent-cyan-glow)}.calc-main-body{grid-template-columns:1.15fr 1fr;gap:28px;padding:28px;display:grid}@media(max-width:960px){.calc-main-body{grid-template-columns:1fr;padding:20px}}.calc-inputs-panel{flex-direction:column;gap:20px;display:flex}.mode-header-badge{justify-content:space-between;align-items:center;display:flex}.mode-description{color:var(--text-secondary);margin-bottom:8px;font-size:.9rem}.input-field-group{flex-direction:column;gap:8px;display:flex}.input-label-row{justify-content:space-between;align-items:center;font-size:.875rem;font-weight:600;display:flex}.input-wrapper{border:1px solid var(--border-subtle);border-radius:var(--radius-md);background:var(--bg-input);transition:var(--transition);display:flex;overflow:hidden}.input-wrapper:focus-within{border-color:var(--border-focus);box-shadow:0 0 0 3px var(--accent-cyan-glow)}.calc-input-box{font-family:var(--font-mono);color:var(--text-primary);background:0 0;border:none;outline:none;flex:1;padding:12px 16px;font-size:1.15rem;font-weight:600}.calc-unit-select{background:var(--bg-surface-elevated);border:none;border-left:1px solid var(--border-subtle);color:var(--text-highlight);font-family:var(--font-mono);cursor:pointer;outline:none;padding:0 14px;font-size:.85rem;font-weight:600}.input-hint{color:var(--text-muted);font-size:.78rem}.waveform-card{background:var(--bg-input);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);flex-direction:column;gap:12px;padding:16px;display:flex;position:relative}.waveform-card-header{color:var(--text-secondary);justify-content:space-between;align-items:center;font-size:.82rem;font-weight:600;display:flex}.wave-canvas-svg{border-radius:var(--radius-md);background:radial-gradient(circle,#0f172a99,#080c16f2);border:1px solid #ffffff0d;width:100%;height:150px}.waveform-legend{color:var(--text-secondary);font-size:.75rem;font-family:var(--font-mono);flex-wrap:wrap;gap:14px;display:flex}.legend-item{align-items:center;gap:6px;display:flex}.legend-dot{border-radius:50%;width:8px;height:8px}.calc-output-panel{flex-direction:column;gap:20px;display:flex}.primary-result-card{border-radius:var(--radius-lg);box-shadow:var(--shadow-md);background:linear-gradient(135deg,#161e31e6,#0f172af2);border:1px solid #38bdf84d;padding:24px;position:relative;overflow:hidden}[data-theme=light] .primary-result-card{background:linear-gradient(135deg,#fff,#f0f9ff);border:1px solid #bae6fd}.primary-result-card:before{content:"";background:radial-gradient(circle,var(--accent-cyan-glow) 0%,transparent 70%);pointer-events:none;width:120px;height:120px;position:absolute;top:0;right:0}.result-eyebrow{text-transform:uppercase;letter-spacing:.06em;color:var(--accent-cyan);justify-content:space-between;align-items:center;margin-bottom:8px;font-size:.8rem;font-weight:700;display:flex}.result-main-value-row{flex-wrap:wrap;align-items:baseline;gap:10px;margin-bottom:12px;display:flex}.result-number{font-family:var(--font-mono);color:var(--text-primary);letter-spacing:-.03em;text-shadow:0 0 20px var(--accent-cyan-glow);font-size:clamp(2.4rem,4vw,3.4rem);font-weight:800;line-height:1}.result-unit{font-family:var(--font-sans);color:var(--accent-cyan);font-size:1.25rem;font-weight:700}.formula-breakdown-box{background:var(--bg-surface-elevated);border:1px solid var(--border-subtle);border-radius:var(--radius-md);font-family:var(--font-mono);color:var(--text-secondary);flex-direction:column;gap:4px;margin-top:14px;padding:12px 16px;font-size:.85rem;display:flex}.formula-math{color:var(--accent-cyan);font-weight:600}.sanity-check-box{border-radius:var(--radius-md);background:#10b98114;border:1px solid #10b98140;align-items:flex-start;gap:12px;padding:12px 16px;display:flex}.sanity-icon{font-size:1.2rem;line-height:1}.sanity-text{color:var(--text-primary);font-size:.85rem;line-height:1.45}.secondary-metrics-grid{grid-template-columns:repeat(3,1fr);gap:12px;display:grid}@media(max-width:600px){.secondary-metrics-grid{grid-template-columns:1fr}}.metric-chip{background:var(--bg-surface-elevated);border:1px solid var(--border-subtle);border-radius:var(--radius-md);flex-direction:column;gap:4px;padding:12px 14px;display:flex}.metric-chip-label{color:var(--text-muted);text-transform:uppercase;font-size:.72rem;font-weight:600}.metric-chip-value{font-family:var(--font-mono);color:var(--text-primary);font-size:1rem;font-weight:700}.share-strip{justify-content:space-between;align-items:center;gap:10px;padding-top:8px;display:flex}.btn-action{background:var(--bg-surface-elevated);border:1px solid var(--border-subtle);border-radius:var(--radius-md);color:var(--text-secondary);cursor:pointer;transition:var(--transition);align-items:center;gap:8px;padding:8px 16px;font-size:.82rem;font-weight:600;display:inline-flex}.btn-action:hover{color:var(--text-primary);border-color:var(--border-focus);background:#38bdf814}#toast{color:#fff;border-radius:var(--radius-md);box-shadow:var(--shadow-lg);opacity:0;transition:var(--transition);z-index:1000;background:#0ea5e9;align-items:center;gap:8px;padding:10px 18px;font-size:.875rem;font-weight:600;display:flex;position:fixed;bottom:24px;right:24px;transform:translateY(100px)}#toast.show{opacity:1;transform:translateY(0)}.content-article{margin-top:40px}.card-grid-3{grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:20px;margin:24px 0;display:grid}.card-grid-2{grid-template-columns:repeat(auto-fit,minmax(440px,1fr));gap:24px;margin:24px 0;display:grid}@media(max-width:580px){.card-grid-2{grid-template-columns:1fr}}.content-card{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);transition:var(--transition);padding:24px;position:relative}.content-card:hover{border-color:#38bdf866;transform:translateY(-2px)}.content-card-header{align-items:center;gap:12px;margin-bottom:14px;display:flex}.card-icon-badge{border-radius:var(--radius-md);background:var(--bg-surface-elevated);width:36px;height:36px;color:var(--accent-cyan);justify-content:center;align-items:center;font-size:1.1rem;display:flex}.table-container{border:1px solid var(--border-subtle);border-radius:var(--radius-lg);background:var(--bg-surface);width:100%;margin:24px 0;overflow-x:auto}table.data-table{border-collapse:collapse;text-align:left;width:100%;font-size:.9rem}table.data-table th{background:var(--bg-surface-elevated);color:var(--text-primary);border-bottom:1px solid var(--border-subtle);white-space:nowrap;padding:14px 18px;font-weight:600}table.data-table td{color:var(--text-secondary);border-bottom:1px solid var(--border-subtle);padding:12px 18px}table.data-table tr:last-child td{border-bottom:none}table.data-table tr:hover td{background:#ffffff05}.math-callout{border:1px solid #38bdf840;border-left:4px solid var(--accent-cyan);border-radius:var(--radius-md);background:linear-gradient(135deg,#0ea5e914,#6366f10d);margin:20px 0;padding:20px}.math-title{text-transform:uppercase;color:var(--accent-cyan);letter-spacing:.05em;margin-bottom:8px;font-size:.85rem;font-weight:700}.math-display{font-family:var(--font-mono);color:var(--text-primary);margin:8px 0;font-size:1.25rem;font-weight:700}.alert-box{border-radius:var(--radius-md);gap:14px;margin:20px 0;padding:18px 20px;font-size:.92rem;line-height:1.55;display:flex}.alert-amber{border:1px solid #f59e0b4d;border-left:4px solid var(--accent-amber);color:#fef3c7;background:#f59e0b14}[data-theme=light] .alert-amber{color:#92400e;background:#fffbeb;border:1px solid #fde68a;border-left:4px solid #d97706}.alert-cyan{border:1px solid #00d4ff4d;border-left:4px solid var(--accent-cyan);color:#e0f2fe;background:#00d4ff14}[data-theme=light] .alert-cyan{color:#0369a1;background:#f0f9ff;border:1px solid #bae6fd;border-left:4px solid #0284c7}.alert-rose{border:1px solid #f43f5e4d;border-left:4px solid var(--accent-rose);color:#ffe4e6;background:#f43f5e14}[data-theme=light] .alert-rose{color:#9f1239;background:#fff1f2;border:1px solid #fecdd3;border-left:4px solid #e11d48}.faq-container{flex-direction:column;gap:14px;margin:28px 0;display:flex}.faq-item{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);transition:var(--transition);overflow:hidden}.faq-item:hover{border-color:var(--border-focus)}.faq-question{text-align:left;width:100%;color:var(--text-primary);font-family:var(--font-sans);cursor:pointer;background:0 0;border:none;justify-content:space-between;align-items:center;gap:16px;padding:18px 22px;font-size:1.05rem;font-weight:600;display:flex}.faq-chevron{color:var(--accent-cyan);font-size:.85rem;transition:transform .3s}.faq-item.open .faq-chevron{transform:rotate(180deg)}.faq-answer{max-height:0;color:var(--text-secondary);padding:0 22px;font-size:.95rem;line-height:1.6;transition:max-height .35s cubic-bezier(0,1,0,1);overflow:hidden}.faq-item.open .faq-answer{max-height:600px;padding-bottom:20px}.numeric-preset-grid{grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:10px;margin:20px 0;display:grid}.preset-pill-link{background:var(--bg-surface-elevated);border:1px solid var(--border-subtle);border-radius:var(--radius-md);text-align:center;color:var(--text-primary);font-family:var(--font-mono);transition:var(--transition);padding:10px 12px;font-size:.85rem;font-weight:600;text-decoration:none;display:block}.preset-pill-link:hover{border-color:var(--accent-cyan);color:var(--accent-cyan);background:#38bdf81f;text-decoration:none;transform:translateY(-2px)}.spoke-tools-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;margin:24px 0;display:grid}.spoke-tool-card{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);transition:var(--transition);flex-direction:column;gap:8px;padding:18px;text-decoration:none;display:flex}.spoke-tool-card:hover{border-color:var(--accent-cyan);background:var(--bg-surface-elevated);transform:translateY(-2px)}.spoke-tool-title{color:var(--text-primary);font-size:.95rem;font-weight:700}.spoke-tool-desc{color:var(--text-secondary);font-size:.82rem;line-height:1.4}.credibility-box{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);grid-template-columns:auto 1fr;align-items:center;gap:24px;margin:48px 0;padding:28px;display:grid}@media(max-width:640px){.credibility-box{text-align:center;grid-template-columns:1fr}}.author-avatar{color:#fff;border:3px solid var(--bg-surface-elevated);background:linear-gradient(135deg,#38bdf8,#6366f1);border-radius:50%;justify-content:center;align-items:center;width:72px;height:72px;margin:0 auto;font-size:1.75rem;font-weight:700;display:flex}footer.site-footer{border-top:1px solid var(--border-subtle);background:var(--bg-surface);color:var(--text-muted);margin-top:80px;padding:48px 0 32px;font-size:.875rem}.footer-grid{grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;margin-bottom:36px;display:grid}@media(max-width:768px){.footer-grid{grid-template-columns:1fr 1fr}}@media(max-width:480px){.footer-grid{grid-template-columns:1fr}}.footer-col h4{color:var(--text-primary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:14px;font-size:.9rem}.footer-links{flex-direction:column;gap:8px;list-style:none;display:flex}.footer-links a{color:var(--text-secondary);font-size:.85rem}.footer-bottom{border-top:1px solid var(--border-subtle);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding-top:24px;display:flex}.lang-dropdown{display:inline-block;position:relative}.lang-toggle-btn{cursor:pointer;background:var(--bg-surface-elevated);border:1px solid var(--border-subtle);border-radius:var(--radius-md);width:auto;min-width:78px;height:38px;color:var(--text-primary);transition:var(--transition);justify-content:center;align-items:center;gap:6px;padding:6px 12px;display:inline-flex}.lang-toggle-btn:hover,.lang-dropdown.is-open .lang-toggle-btn{border-color:var(--accent-cyan);box-shadow:0 0 12px var(--accent-cyan-glow)}.lang-dropdown.is-open .lang-arrow{transform:rotate(180deg)}.lang-dropdown-menu{background:var(--bg-surface-elevated);border:1px solid var(--border-subtle);border-radius:var(--radius-md);box-shadow:var(--shadow-lg),0 10px 30px #0006;-webkit-backdrop-filter:blur(20px);scrollbar-width:thin;z-index:500;opacity:0;visibility:hidden;pointer-events:none;min-width:190px;max-height:280px;margin-top:6px;padding:6px 0;transition:opacity .18s cubic-bezier(.16,1,.3,1),transform .18s cubic-bezier(.16,1,.3,1),visibility .18s;position:absolute;top:100%;right:0;overflow-y:auto;transform:translateY(6px)}.lang-dropdown-menu:before{content:"";background:0 0;height:14px;position:absolute;top:-12px;left:0;right:0}.lang-dropdown:hover .lang-dropdown-menu,.lang-dropdown.is-open .lang-dropdown-menu{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}.lang-dropdown.direction-up .lang-dropdown-menu,footer .lang-dropdown .lang-dropdown-menu{margin-top:0;margin-bottom:6px;top:auto;bottom:100%;transform:translateY(-6px)}.lang-dropdown.direction-up .lang-dropdown-menu:before,footer .lang-dropdown .lang-dropdown-menu:before{height:14px;top:auto;bottom:-12px}.lang-dropdown.direction-up:hover .lang-dropdown-menu,.lang-dropdown.direction-up.is-open .lang-dropdown-menu,footer .lang-dropdown:hover .lang-dropdown-menu,footer .lang-dropdown.is-open .lang-dropdown-menu{transform:translateY(0)}.lang-item{color:var(--text-secondary);transition:var(--transition-fast);justify-content:space-between;align-items:center;gap:12px;padding:8px 14px;font-size:.82rem;text-decoration:none;display:flex}.lang-item:hover{color:var(--text-primary);background:#ffffff0f;text-decoration:none}[data-theme=light] .lang-item:hover{background:#0000000d}.lang-item.active{color:var(--accent-cyan);border-left:3px solid var(--accent-cyan);background:#00d4ff1a;font-weight:700}.blog-container{max-width:1200px;margin:0 auto;padding:40px 24px}.blog-header{text-align:center;max-width:800px;margin:0 auto 48px}.blog-header-badge{align-items:center;gap:8px;margin-bottom:16px;display:inline-flex}.blog-title{color:var(--text-primary);letter-spacing:-.02em;margin-bottom:16px;font-size:2.75rem;font-weight:800;line-height:1.15}.blog-subtitle{color:var(--text-secondary);margin-bottom:24px;font-size:1.05rem;line-height:1.6}.blog-category-pills{flex-wrap:wrap;justify-content:center;align-items:center;gap:10px;margin-top:20px;display:flex}.blog-category-pill{background:var(--bg-surface-elevated);color:var(--text-secondary);border:1px solid var(--border-subtle);transition:var(--transition-fast);border-radius:9999px;padding:6px 14px;font-size:.75rem;font-weight:600;text-decoration:none}.blog-category-pill.active{color:var(--accent-cyan);background:#00d4ff1f;border-color:#00d4ff59}.blog-grid{grid-template-columns:repeat(3,1fr);gap:32px;margin-bottom:56px;display:grid}@media(max-width:1024px){.blog-grid{grid-template-columns:repeat(2,1fr);gap:24px}}@media(max-width:680px){.blog-grid{grid-template-columns:1fr;gap:24px}.blog-title{font-size:2rem}}.blog-card{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);transition:var(--transition);box-shadow:var(--shadow-sm);flex-direction:column;text-decoration:none;display:flex;overflow:hidden}.blog-card:hover{border-color:var(--accent-cyan);transform:translateY(-6px);box-shadow:0 16px 36px -10px #00000059,0 0 20px -2px #00d4ff2e}.blog-card-media{aspect-ratio:16/9;background:var(--bg-surface-elevated);border-bottom:1px solid var(--border-subtle);width:100%;display:block;position:relative;overflow:hidden}.blog-card-media img{object-fit:cover;width:100%;height:100%;transition:transform .5s cubic-bezier(.16,1,.3,1);display:block}.blog-card:hover .blog-card-media img{transform:scale(1.06)}.blog-card-badge{z-index:2;position:absolute;top:14px;left:14px}.blog-card-time{z-index:2;font-family:var(--font-mono);color:#cbd5e1;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#0f172ad9;border:1px solid #ffffff26;border-radius:9999px;padding:4px 8px;font-size:.65rem;position:absolute;top:14px;right:14px}.blog-card-body{flex-direction:column;flex:1;justify-content:space-between;padding:24px;display:flex}.blog-card-meta{font-family:var(--font-mono);color:var(--text-muted);align-items:center;gap:8px;margin-bottom:12px;font-size:.725rem;display:flex}.blog-card-title{color:var(--text-primary);transition:color var(--transition-fast);margin-bottom:10px;font-size:1.15rem;font-weight:700;line-height:1.4}.blog-card:hover .blog-card-title{color:var(--accent-cyan)}.blog-card-desc{color:var(--text-secondary);-webkit-line-clamp:3;-webkit-box-orient:vertical;margin-bottom:20px;font-size:.85rem;line-height:1.6;display:-webkit-box;overflow:hidden}.blog-card-footer{border-top:1px solid var(--border-subtle);justify-content:space-between;align-items:center;padding-top:16px;display:flex}.blog-card-link{color:var(--accent-cyan);transition:gap var(--transition-fast);align-items:center;gap:6px;font-size:.8rem;font-weight:700;display:inline-flex}.blog-card:hover .blog-card-link{gap:10px}.blog-article-hero{border-radius:var(--radius-lg);border:1px solid var(--border-subtle);background:var(--bg-surface);box-shadow:var(--shadow-md);margin-bottom:36px;overflow:hidden}.blog-article-hero img{object-fit:cover;width:100%;height:auto;max-height:480px;display:block}.blog-article-caption{text-align:center;font-family:var(--font-mono);color:var(--text-muted);border-top:1px solid var(--border-subtle);background:var(--bg-surface-elevated);padding:10px 16px;font-size:.75rem}.blog-post-body{color:var(--text-secondary);font-size:1.025rem;line-height:1.8}.blog-post-body h2{color:var(--text-primary);border-bottom:1px solid var(--border-subtle);margin-top:48px;margin-bottom:18px;padding-bottom:10px;font-size:clamp(1.4rem,2.5vw,1.85rem);font-weight:700}.blog-post-body h3{color:var(--text-primary);margin-top:32px;margin-bottom:14px;font-size:1.25rem;font-weight:700}.blog-post-body h4{color:var(--text-primary);margin-top:24px;margin-bottom:10px;font-size:1.05rem;font-weight:600}.blog-post-body p{margin-bottom:20px;line-height:1.8}.blog-post-body ul,.blog-post-body ol{flex-direction:column;gap:8px;margin:16px 0 24px 24px;display:flex}.blog-post-body li{color:var(--text-secondary);line-height:1.7}.blog-post-body li strong{color:var(--text-primary)}.blog-post-body blockquote{background:var(--bg-surface-elevated);border-left:4px solid var(--accent-cyan);border-radius:0 var(--radius-md) var(--radius-md) 0;color:var(--text-primary);margin:28px 0;padding:18px 24px;font-style:italic}.blog-post-body blockquote p{margin-bottom:0}.blog-post-body table{border-collapse:collapse;border:1px solid var(--border-subtle);border-radius:var(--radius-md);-webkit-overflow-scrolling:touch;width:100%;margin:28px 0;font-size:.9rem;display:block;overflow:auto hidden}.blog-post-body th{background:var(--bg-surface-elevated);color:var(--text-primary);text-align:left;border-bottom:1px solid var(--border-subtle);white-space:nowrap;padding:12px 16px;font-weight:700}.blog-post-body td{border-bottom:1px solid var(--border-subtle);color:var(--text-secondary);padding:12px 16px}.blog-post-body tr:hover td{background:#38bdf80a}.blog-post-body pre{background:var(--bg-surface-elevated);border:1px solid var(--border-subtle);border-radius:var(--radius-md);font-family:var(--font-mono);color:var(--accent-cyan);margin:24px 0;padding:18px;font-size:.875rem;line-height:1.6;overflow-x:auto}.blog-post-body code{background:var(--bg-surface-elevated);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);font-family:var(--font-mono);color:var(--accent-cyan);padding:2px 6px;font-size:.88em}.blog-post-body pre code{color:inherit;font-size:inherit;background:0 0;border:none;padding:0}.blog-post-body strong{color:var(--text-primary);font-weight:700}.blog-post-body hr{border:none;border-top:1px solid var(--border-subtle);margin:40px 0}.mobile-menu-btn{display:none}@media(max-width:960px){.nav-links{display:none!important}.mobile-menu-btn{display:inline-flex!important}.nav-wrapper{gap:12px}.brand-logo{gap:8px;font-size:1rem}.brand-icon{width:32px;height:32px}header.site-header{padding:10px 0}}@media(max-width:768px){.container{padding:0 16px}.hero-section{padding:28px 0 16px}.hero-title{margin-bottom:12px;font-size:clamp(1.75rem,6.5vw,2.5rem)}.hero-subtitle{margin-bottom:24px;font-size:.95rem;line-height:1.55}.hero-eyebrow{flex-wrap:wrap;gap:8px;margin-bottom:12px}h2{margin-top:40px;margin-bottom:16px}}@media(max-width:480px){.container{padding:0 12px}.hero-title{font-size:1.65rem}.badge{padding:3px 8px;font-size:.7rem}}@media(max-width:768px){.calculator-container{border-radius:var(--radius-lg);margin-bottom:40px}.calc-mode-nav{grid-template-columns:repeat(auto-fit,minmax(115px,1fr));gap:4px;padding:6px}.mode-tab{padding:8px 6px;font-size:.76rem}.calc-config-bar{flex-direction:column;align-items:stretch;gap:12px;padding:12px 14px}.config-group{justify-content:space-between;gap:8px;width:100%}.config-group select{flex:1;min-width:0}.calc-main-body{grid-template-columns:1fr;gap:20px;padding:16px}.calc-input-box{padding:10px 12px;font-size:1.05rem}.primary-result-card{padding:20px 16px}.result-number{word-break:break-all;font-size:clamp(2rem,8vw,3rem)}.secondary-metrics-grid{grid-template-columns:repeat(2,1fr);gap:8px}}@media(max-width:440px){.calc-main-body{padding:12px}.secondary-metrics-grid{grid-template-columns:1fr}.share-strip{flex-direction:column;align-items:stretch;gap:8px}.btn-action{justify-content:center;width:100%}.input-label-row{font-size:.8rem}}@media(max-width:768px){input[type=text],input[type=number],select,textarea{font-size:16px!important}}input[type=range]{cursor:pointer;touch-action:manipulation;height:28px}.table-container{-webkit-overflow-scrolling:touch;border-radius:var(--radius-md);width:100%;max-width:100%;position:relative;overflow-x:auto}@media(max-width:640px){table.data-table th,table.data-table td{white-space:nowrap;padding:10px 12px;font-size:.8rem}.math-display{word-break:break-all;font-size:1.05rem}.math-callout{padding:14px}}.interactive-diagram-card{width:100%;max-width:100%;overflow-x:hidden}.diagram-canvas-wrap{width:100%;max-width:100%;overflow:hidden}@media(max-width:768px){.interactive-diagram-card{border-radius:var(--radius-md);margin:20px 0;padding:16px}.diagram-title{font-size:1.1rem}.diagram-desc{font-size:.825rem}.diagram-controls-bar{flex-direction:column;align-items:stretch;gap:12px;padding:12px}.diag-ctrl-group{width:100%;min-width:100%}.diag-metrics-grid{grid-template-columns:repeat(2,1fr)!important;gap:8px!important}.diag-metric-box{padding:10px}.diag-metric-val{font-size:1rem}}@media(max-width:480px){.diag-metrics-grid{grid-template-columns:1fr!important}.matrix-preset-pills{grid-template-columns:repeat(2,1fr);gap:6px;display:grid}.mat-pill-btn{text-align:center;padding:6px 8px;font-size:.72rem}}@media(max-width:640px){.numeric-preset-grid{grid-template-columns:repeat(auto-fill,minmax(80px,1fr));gap:6px}.preset-pill-link{padding:8px 6px;font-size:.78rem}.spoke-tools-grid{grid-template-columns:1fr;gap:12px}.card-grid-3,.card-grid-2{grid-template-columns:1fr;gap:14px}.content-card{padding:16px}.faq-question{padding:14px 16px;font-size:.95rem}.faq-answer{padding:0 16px;font-size:.875rem}.faq-item.open .faq-answer{padding-bottom:16px}}@media(max-width:768px){footer.site-footer{margin-top:50px;padding:36px 0 24px}.footer-grid{grid-template-columns:1fr 1fr;gap:24px}}@media(max-width:480px){.footer-grid{grid-template-columns:1fr;gap:20px}.footer-bottom{text-align:center;flex-direction:column;gap:12px}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-space-y-reverse{syntax:"*";inherits:false;initial-value:0}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-gradient-position{syntax:"*";inherits:false}@property --tw-gradient-from{syntax:"<color>";inherits:false;initial-value:#0000}@property --tw-gradient-via{syntax:"<color>";inherits:false;initial-value:#0000}@property --tw-gradient-to{syntax:"<color>";inherits:false;initial-value:#0000}@property --tw-gradient-stops{syntax:"*";inherits:false}@property --tw-gradient-via-stops{syntax:"*";inherits:false}@property --tw-gradient-from-position{syntax:"<length-percentage>";inherits:false;initial-value:0%}@property --tw-gradient-via-position{syntax:"<length-percentage>";inherits:false;initial-value:50%}@property --tw-gradient-to-position{syntax:"<length-percentage>";inherits:false;initial-value:100%}@property --tw-leading{syntax:"*";inherits:false}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-tracking{syntax:"*";inherits:false}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-backdrop-blur{syntax:"*";inherits:false}@property --tw-backdrop-brightness{syntax:"*";inherits:false}@property --tw-backdrop-contrast{syntax:"*";inherits:false}@property --tw-backdrop-grayscale{syntax:"*";inherits:false}@property --tw-backdrop-hue-rotate{syntax:"*";inherits:false}@property --tw-backdrop-invert{syntax:"*";inherits:false}@property --tw-backdrop-opacity{syntax:"*";inherits:false}@property --tw-backdrop-saturate{syntax:"*";inherits:false}@property --tw-backdrop-sepia{syntax:"*";inherits:false}