@import"https://fonts.googleapis.com/css2?family=Zen+Kaku+Gothic+New:wght@300;400;500;700;900&family=Noto+Sans+TC:wght@300;400;500;700&family=JetBrains+Mono:wght@400;500&family=Cormorant+Garamond:wght@300;400;600&display=swap";.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.focus\:not-sr-only:focus{position:fixed;width:auto;height:auto;padding:.5rem 1rem;margin:0;overflow:visible;clip:auto;white-space:normal}:root{--color-primary-50: #F0F9FF;--color-primary-100: #E0F2FE;--color-primary-200: #BAE6FD;--color-primary-300: #7DD3FC;--color-primary-400: #38BDF8;--color-primary-500: #0EA5E9;--color-primary-600: #0284C7;--color-primary-700: #0369A1;--color-primary-800: #075985;--color-primary-900: #0C4A6E;--color-secondary-50: #F8FAFC;--color-secondary-100: #F1F5F9;--color-secondary-200: #E2E8F0;--color-secondary-300: #CBD5E1;--color-secondary-400: #94A3B8;--color-secondary-500: #64748B;--color-secondary-600: #475569;--color-secondary-700: #334155;--color-secondary-800: #1E293B;--color-secondary-900: #0F172A;--color-evidence-strong: #059669;--color-evidence-preliminary: #2563EB;--color-evidence-insufficient: #D97706;--color-evidence-ineffective: #DC2626;--color-evidence-strong-bg: #ECFDF5;--color-evidence-preliminary-bg: #EFF6FF;--color-evidence-insufficient-bg: #FFFBEB;--color-evidence-ineffective-bg: #FEF2F2;--color-accent-hydrogen: #DBEAFE;--color-accent-oxygen: #BFDBFE;--color-accent-bubble: rgba(14, 165, 233, .08);--font-family-primary: "Zen Kaku Gothic New", "Noto Sans TC", sans-serif;--font-family-mono: "JetBrains Mono", "Fira Code", monospace;--font-family-display: "Cormorant Garamond", "Zen Old Mincho", serif;--text-display: 3rem;--text-h1: 2.25rem;--text-h2: 1.75rem;--text-h3: 1.25rem;--text-h4: 1rem;--text-body-lg: 1.125rem;--text-body: 1rem;--text-body-sm: .875rem;--text-caption: .75rem;--text-overline: .6875rem;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--space-20: 5rem;--space-24: 6rem;--space-32: 8rem;--space-40: 10rem;--radius-none: 0;--radius-sm: .25rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-full: 9999px;--shadow-xs: 0 1px 2px rgba(15, 23, 42, .04);--shadow-sm: 0 1px 3px rgba(15, 23, 42, .06), 0 1px 2px rgba(15, 23, 42, .04);--shadow-md: 0 4px 6px rgba(15, 23, 42, .05), 0 2px 4px rgba(15, 23, 42, .03);--shadow-lg: 0 10px 15px rgba(15, 23, 42, .06), 0 4px 6px rgba(15, 23, 42, .03);--shadow-xl: 0 20px 25px rgba(15, 23, 42, .08), 0 8px 10px rgba(15, 23, 42, .03);--duration-instant: .1s;--duration-fast: .2s;--duration-normal: .3s;--duration-slow: .5s;--duration-slower: .8s;--easing-default: cubic-bezier(.4, 0, .2, 1);--easing-in: cubic-bezier(.4, 0, 1, 1);--easing-out: cubic-bezier(0, 0, .2, 1);--easing-spring: cubic-bezier(.34, 1.56, .64, 1);--container-max: 1200px;--container-narrow: 720px;--container-wide: 1440px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-family-primary);background-color:var(--color-secondary-50);color:var(--color-secondary-800);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;scroll-behavior:smooth;font-size:16px;letter-spacing:.01em}body{min-height:100vh;background-color:var(--color-secondary-50);color:var(--color-secondary-800);line-height:1.75}img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}.container{width:100%;max-width:var(--container-max);margin-inline:auto;padding-inline:var(--space-6)}.container-narrow{width:100%;max-width:var(--container-narrow);margin-inline:auto;padding-inline:var(--space-6)}.container-wide{width:100%;max-width:var(--container-wide);margin-inline:auto;padding-inline:var(--space-6)}@media(min-width:1024px){.container,.container-narrow,.container-wide{padding-inline:var(--space-8)}}.nav-header{position:sticky;top:0;left:0;right:0;z-index:100;height:64px;display:flex;align-items:center;background:#f8fafccc;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:border-color var(--duration-normal) var(--easing-default),background var(--duration-normal) var(--easing-default)}.nav-header.scrolled{background:#f8fafcf2;border-bottom-color:var(--color-secondary-200);box-shadow:var(--shadow-xs)}@media(min-width:1024px){.nav-header{height:72px}}.nav-inner{display:flex;align-items:center;justify-content:space-between;width:100%}.nav-logo{display:flex;align-items:baseline;gap:var(--space-1);font-size:1.125rem;font-weight:300;letter-spacing:-.02em;text-decoration:none;color:var(--color-secondary-800);line-height:1}.nav-logo-h2{color:var(--color-primary-500);font-weight:400}.nav-links{display:none;align-items:center;gap:var(--space-8);list-style:none}@media(min-width:768px){.nav-links{display:flex}}.nav-link{font-size:var(--text-body-sm);font-weight:500;color:var(--color-secondary-500);text-decoration:none;padding-bottom:var(--space-1);border-bottom:2px solid transparent;transition:color var(--duration-fast) var(--easing-default),border-color var(--duration-fast) var(--easing-default)}.nav-link:hover,.nav-link.active{color:var(--color-primary-500);border-bottom-color:var(--color-primary-500)}.nav-lang{display:flex;align-items:center;font-size:var(--text-caption);font-weight:500;color:var(--color-secondary-500);padding:var(--space-1) var(--space-3);border:1px solid var(--color-secondary-200);border-radius:var(--radius-full);cursor:pointer;transition:border-color var(--duration-fast),color var(--duration-fast)}.nav-lang:hover{border-color:var(--color-primary-300);color:var(--color-primary-600)}.nav-hamburger{display:flex;flex-direction:column;justify-content:center;align-items:center;width:40px;height:40px;gap:5px;cursor:pointer;background:none;border:none;padding:var(--space-2)}@media(min-width:768px){.nav-hamburger{display:none}}.nav-hamburger span{display:block;width:22px;height:1.5px;background:var(--color-secondary-700);transition:all var(--duration-normal) var(--easing-default);transform-origin:center}.nav-hamburger.open span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}.nav-hamburger.open span:nth-child(2){opacity:0;transform:scaleX(0)}.nav-hamburger.open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}.nav-mobile-menu{position:fixed;inset:0;z-index:99;background:#f8fafcfa;backdrop-filter:blur(12px);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-8);opacity:0;pointer-events:none;transition:opacity var(--duration-normal) var(--easing-default)}.nav-mobile-menu.open{opacity:1;pointer-events:all}.nav-mobile-link{font-size:1.5rem;font-weight:300;color:var(--color-secondary-700);text-decoration:none;transition:color var(--duration-fast)}.nav-mobile-link:hover{color:var(--color-primary-500)}.hero{position:relative;min-height:80vh;display:flex;align-items:center;overflow:hidden;background-color:var(--color-secondary-50)}.hero-bg{position:absolute;inset:0;background:radial-gradient(ellipse at 30% 50%,var(--color-primary-50) 0%,transparent 70%),radial-gradient(ellipse at 70% 80%,var(--color-accent-hydrogen) 0%,transparent 60%);pointer-events:none}.hero-content{position:relative;z-index:1;padding:var(--space-20) 0}.hero-display-title{font-family:var(--font-family-display);font-size:clamp(2.5rem,6vw,4.5rem);font-weight:300;line-height:1.15;letter-spacing:-.02em;color:var(--color-secondary-900);margin-bottom:var(--space-4)}.hero-subtitle-ja{font-family:var(--font-family-primary);font-size:clamp(1rem,2vw,1.25rem);font-weight:300;color:var(--color-secondary-500);letter-spacing:.05em;margin-bottom:var(--space-8)}.bubble-container{position:absolute;inset:0;overflow:hidden;pointer-events:none}.bubble{position:absolute;border-radius:50%;background:var(--color-accent-bubble);border:1px solid rgba(14,165,233,.12);animation:bubbleRise var(--duration, 8s) ease-in-out infinite;animation-delay:var(--delay, 0s);bottom:-60px;opacity:0}@keyframes bubbleRise{0%{transform:translateY(0) translate(0);opacity:0}10%{opacity:.7}50%{transform:translateY(-45vh) translate(var(--drift, 20px));opacity:.5}90%{opacity:.2}to{transform:translateY(-90vh) translate(var(--drift2, -10px));opacity:0}}.section{padding-block:var(--space-24)}.section-alt{background-color:var(--color-secondary-100);padding-block:var(--space-24)}.section-hero-gap{padding-top:var(--space-32)}.section-label{font-size:var(--text-overline);font-weight:700;text-transform:uppercase;letter-spacing:.12em;color:var(--color-primary-500);margin-bottom:var(--space-3);display:block}.section-title{font-size:var(--text-h2);font-weight:700;color:var(--color-secondary-800);line-height:1.4;letter-spacing:.01em;margin-bottom:var(--space-3)}.section-desc{font-size:var(--text-body);color:var(--color-secondary-500);line-height:1.75;max-width:560px}.article-card{background:#fff;border:1px solid var(--color-secondary-200);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow var(--duration-normal) var(--easing-default),transform var(--duration-normal) var(--easing-default);text-decoration:none;color:inherit}.article-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.article-card-image{aspect-ratio:16 / 9;overflow:hidden;background:linear-gradient(135deg,var(--color-primary-100) 0%,var(--color-primary-200) 100%);display:flex;align-items:center;justify-content:center;position:relative}.article-card-image img{width:100%;height:100%;object-fit:cover;transition:transform var(--duration-normal) var(--easing-default)}.article-card:hover .article-card-image img{transform:scale(1.03)}.article-card-image-placeholder{font-size:3rem;opacity:.25;color:var(--color-primary-600);font-family:var(--font-family-display);font-weight:300;user-select:none}.article-card-body{padding:var(--space-5) var(--space-6);flex:1;display:flex;flex-direction:column;gap:var(--space-3)}.article-card-overline{font-size:var(--text-overline);font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--color-primary-500)}.article-card-title{font-size:var(--text-h3);font-weight:500;color:var(--color-secondary-800);line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.article-card-desc{font-size:var(--text-body-sm);color:var(--color-secondary-500);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;flex:1}.article-card-footer{display:flex;align-items:center;gap:var(--space-2);margin-top:auto;flex-wrap:wrap}.article-card-reading-time{font-size:var(--text-caption);color:var(--color-secondary-400);margin-left:auto}.cards-grid{display:grid;grid-template-columns:1fr;gap:var(--space-6)}@media(min-width:640px){.cards-grid{grid-template-columns:repeat(2,1fr)}}@media(min-width:1024px){.cards-grid{grid-template-columns:repeat(3,1fr)}}.evidence-badge{display:inline-flex;align-items:center;gap:var(--space-1);padding:4px 10px;border-radius:var(--radius-sm);font-size:var(--text-caption);font-weight:700;letter-spacing:.03em;text-transform:uppercase;white-space:nowrap}.evidence-badge--strong{background-color:var(--color-evidence-strong-bg);color:var(--color-evidence-strong)}.evidence-badge--preliminary{background-color:var(--color-evidence-preliminary-bg);color:var(--color-evidence-preliminary)}.evidence-badge--insufficient{background-color:var(--color-evidence-insufficient-bg);color:var(--color-evidence-insufficient)}.evidence-badge--ineffective{background-color:var(--color-evidence-ineffective-bg);color:var(--color-evidence-ineffective)}.evidence-dot{display:inline-flex;width:8px;height:8px;border-radius:50%;margin-right:4px;vertical-align:middle;position:relative;top:-1px}.evidence-dot--strong{background-color:var(--color-evidence-strong)}.evidence-dot--preliminary{background-color:var(--color-evidence-preliminary)}.evidence-dot--insufficient{background-color:var(--color-evidence-insufficient)}.evidence-dot--ineffective{background-color:var(--color-evidence-ineffective)}.citation{background:var(--color-secondary-50);border-left:3px solid var(--color-primary-400);border-radius:var(--radius-md);padding:var(--space-5) var(--space-6);margin-block:var(--space-6);box-shadow:var(--shadow-xs);transition:box-shadow var(--duration-normal) var(--easing-default)}.citation:hover{box-shadow:var(--shadow-md)}.citation-title{font-size:var(--text-body-sm);font-weight:500;color:var(--color-secondary-800);line-height:1.5;margin-bottom:var(--space-2)}.citation-meta{font-size:var(--text-caption);color:var(--color-secondary-400);line-height:1.5;margin-bottom:var(--space-3);font-style:italic}.citation-finding{font-size:var(--text-body-sm);color:var(--color-secondary-600);line-height:1.7;margin-bottom:var(--space-3)}.btn{display:inline-flex;align-items:center;justify-content:center;font-family:var(--font-family-primary);font-weight:500;text-decoration:none;cursor:pointer;border:none;transition:background-color var(--duration-fast) var(--easing-default),color var(--duration-fast) var(--easing-default),transform var(--duration-fast) var(--easing-spring),box-shadow var(--duration-fast) var(--easing-default);white-space:nowrap}.btn:focus-visible{outline:2px solid var(--color-primary-300);outline-offset:2px}.btn:disabled{opacity:.5;cursor:not-allowed;pointer-events:none}.btn--sm{height:32px;padding:0 var(--space-4);font-size:.8125rem;border-radius:var(--radius-sm)}.btn--md{height:40px;padding:0 var(--space-5);font-size:var(--text-body-sm);border-radius:var(--radius-sm)}.btn--lg{height:48px;padding:0 1.75rem;font-size:var(--text-body);font-weight:600;border-radius:var(--radius-md)}.btn--primary{background-color:var(--color-primary-500);color:#fff}.btn--primary:hover{background-color:var(--color-primary-600);transform:translateY(-1px);box-shadow:var(--shadow-sm)}.btn--primary:active{background-color:var(--color-primary-700);transform:translateY(0);box-shadow:none}.btn--secondary{background-color:transparent;color:var(--color-primary-600);border:1px solid var(--color-primary-300)}.btn--secondary:hover{background-color:var(--color-primary-50);transform:translateY(-1px)}.btn--secondary:active{transform:translateY(0)}.btn--ghost{background-color:transparent;color:var(--color-secondary-600)}.btn--ghost:hover{background-color:var(--color-secondary-100)}.chip{display:inline-flex;align-items:center;height:28px;padding:0 var(--space-3);font-size:var(--text-caption);font-weight:500;background-color:var(--color-secondary-100);color:var(--color-secondary-600);border-radius:var(--radius-full);text-decoration:none;cursor:pointer;transition:background-color var(--duration-fast),color var(--duration-fast);white-space:nowrap;border:none}.chip:hover{background-color:var(--color-primary-100);color:var(--color-primary-600)}.chip.active,.chip--active{background-color:var(--color-primary-500);color:#fff}.search-bar{display:flex;align-items:center;gap:var(--space-3);height:48px;padding:0 var(--space-4);background:#fff;border:1px solid var(--color-secondary-200);border-radius:var(--radius-full);box-shadow:var(--shadow-xs);transition:border-color var(--duration-fast),box-shadow var(--duration-fast);max-width:480px}.search-bar:focus-within{border-color:var(--color-primary-400);box-shadow:0 0 0 3px #0ea5e91a}.search-bar input{flex:1;border:none;outline:none;font-family:var(--font-family-primary);font-size:var(--text-body);color:var(--color-secondary-700);background:transparent}.search-bar input::placeholder{color:var(--color-secondary-400)}.search-icon{color:var(--color-secondary-400);flex-shrink:0}.stats-grid{display:grid;grid-template-columns:1fr;gap:var(--space-6)}@media(min-width:640px){.stats-grid{grid-template-columns:repeat(3,1fr)}}.stat-card{background:#fff;border:1px solid var(--color-secondary-200);border-radius:var(--radius-md);padding:var(--space-8) var(--space-6);text-align:center;box-shadow:var(--shadow-sm)}.stat-number{font-family:var(--font-family-mono);font-size:clamp(2rem,4vw,3rem);font-weight:500;color:var(--color-primary-700);line-height:1.1;margin-bottom:var(--space-2);letter-spacing:-.02em}.stat-label{font-size:var(--text-body-sm);color:var(--color-secondary-500);line-height:1.5}.evidence-explainer-grid{display:grid;grid-template-columns:1fr;gap:var(--space-4)}@media(min-width:640px){.evidence-explainer-grid{grid-template-columns:repeat(2,1fr)}}.evidence-explainer-item{display:flex;flex-direction:column;gap:var(--space-3);padding:var(--space-6);background:#fff;border:1px solid var(--color-secondary-200);border-radius:var(--radius-md);box-shadow:var(--shadow-xs)}.evidence-explainer-desc{font-size:var(--text-body-sm);color:var(--color-secondary-500);line-height:1.7}.toc-sidebar{position:sticky;top:96px;max-height:calc(100vh - 112px);overflow-y:auto;padding:var(--space-5)}.toc-heading{font-size:var(--text-overline);font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--color-secondary-400);margin-bottom:var(--space-4)}.toc-list{list-style:none;display:flex;flex-direction:column;gap:var(--space-1)}.toc-link{display:block;font-size:var(--text-body-sm);font-weight:400;color:var(--color-secondary-400);text-decoration:none;padding:var(--space-1) 0 var(--space-1) var(--space-3);border-left:2px solid transparent;line-height:1.5;transition:color var(--duration-fast),border-color var(--duration-fast)}.toc-link:hover{color:var(--color-secondary-700)}.toc-link.active{font-weight:500;color:var(--color-primary-600);border-left-color:var(--color-primary-500)}.toc-link--h3{padding-left:calc(var(--space-3) + var(--space-3));font-size:var(--text-caption)}.prose{font-size:var(--text-body-lg);line-height:1.8;color:var(--color-secondary-700);letter-spacing:.02em}.prose h2{font-size:var(--text-h2);font-weight:700;color:var(--color-secondary-900);margin-top:var(--space-16);margin-bottom:var(--space-6);letter-spacing:.01em;line-height:1.35;padding-bottom:var(--space-3);border-bottom:1px solid var(--color-secondary-200);scroll-margin-top:96px}.prose h3{font-size:var(--text-h3);font-weight:600;color:var(--color-secondary-700);margin-top:var(--space-10);margin-bottom:var(--space-4);scroll-margin-top:96px}.prose h4{font-size:var(--text-h4);font-weight:700;color:var(--color-secondary-700);margin-top:var(--space-6);margin-bottom:var(--space-2)}.prose p{margin-bottom:var(--space-5)}.prose a{color:var(--color-primary-600);text-decoration-color:#0ea5e94d;text-decoration-thickness:1px;transition:color var(--duration-fast)}.prose a:hover{color:var(--color-primary-700)}.prose ul,.prose ol{padding-left:var(--space-6);margin-bottom:var(--space-5)}.prose li{margin-bottom:var(--space-2)}.prose strong{font-weight:700;color:var(--color-secondary-900)}.prose code{font-family:var(--font-family-mono);font-size:.875em;background:var(--color-secondary-100);padding:2px 6px;border-radius:var(--radius-sm);color:var(--color-primary-700)}.prose table{width:100%;border-collapse:collapse;font-size:var(--text-body-sm);margin-block:var(--space-6);box-shadow:var(--shadow-sm);border-radius:var(--radius-md);overflow:hidden}.prose th{background:var(--color-secondary-100);color:var(--color-secondary-700);font-weight:700;text-align:left;padding:var(--space-3) var(--space-4);border-bottom:2px solid var(--color-secondary-200);font-size:var(--text-caption);letter-spacing:.04em;text-transform:uppercase}.prose td{padding:var(--space-3) var(--space-4);border-bottom:1px solid var(--color-secondary-200);vertical-align:top;color:var(--color-secondary-600)}.prose tr:last-child td{border-bottom:none}.prose tr:nth-child(2n) td{background:#f8fafc80}.prose blockquote{border-left:3px solid var(--color-primary-300);padding:var(--space-3) var(--space-5);margin-block:var(--space-6);color:var(--color-secondary-600);font-style:italic;background:var(--color-primary-50);border-radius:0 var(--radius-sm) var(--radius-sm) 0}.article-header{padding-block:var(--space-12) 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