:root{color-scheme:light dark;--paper-0: #f5f1e8;--paper-1: #efe9da;--paper-2: #e6decb;--ink: #211d16;--ink-2: #5c554a;--ink-3: #8a8174;--sumi: #2b2620;--indigo: #33527d;--vermillion: #b03a23;--pine: #2f6650;--hairline: rgba(33, 29, 22, .14);--hairline-soft: rgba(33, 29, 22, .08);--card-bg: rgba(255, 255, 255, .5);--card-shadow: 0 1px 2px rgba(33, 29, 22, .04), 0 12px 32px rgba(33, 29, 22, .06);--radius-card: 18px;--radius-btn: 980px;--btn-bg: var(--ink);--btn-fg: var(--paper-0);--max-w: 1040px;--max-w-narrow: 680px;--header-h: 56px;--font-sans: -apple-system, BlinkMacSystemFont, "SF Pro TC", "SF Pro Display", "PingFang TC", "Noto Sans TC", "Helvetica Neue", "Segoe UI", sans-serif}@media (prefers-color-scheme: dark){:root{--paper-0: #191611;--paper-1: #1f1b14;--paper-2: #272217;--ink: #ece5d6;--ink-2: #aaa08d;--ink-3: #7d7466;--sumi: #d9d2c2;--indigo: #8fb0d9;--vermillion: #de8a72;--pine: #8cc3ab;--hairline: rgba(236, 229, 214, .16);--hairline-soft: rgba(236, 229, 214, .09);--card-bg: rgba(255, 255, 255, .04);--card-shadow: 0 1px 2px rgba(0, 0, 0, .2), 0 12px 32px rgba(0, 0, 0, .28)}}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:var(--font-sans);font-size:17px;line-height:1.75;letter-spacing:.01em;background-color:var(--paper-0);min-height:100vh;-webkit-font-smoothing:antialiased}::selection{background:#33527d2e}a{color:var(--indigo);text-decoration:none;transition:color .2s ease,opacity .2s ease}a:hover{opacity:.75}strong{color:var(--ink);font-weight:650}.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}.container-narrow{max-width:var(--max-w-narrow);margin:0 auto;padding:0 24px}.muted{color:var(--ink-2)}.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--paper-0) 78%,transparent);backdrop-filter:saturate(160%) blur(16px);-webkit-backdrop-filter:saturate(160%) blur(16px);border-bottom:1px solid var(--hairline-soft)}.header-inner{max-width:var(--max-w);margin:0 auto;padding:0 24px;min-height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.brand{font-weight:700;font-size:1.08rem;letter-spacing:.06em;color:var(--ink)}.brand:hover{color:var(--ink);opacity:1}.brand .brand-dot{color:var(--vermillion)}nav.site-nav{display:flex;gap:24px;flex-wrap:wrap}nav.site-nav a{color:var(--ink-2);font-size:.85rem;letter-spacing:.02em}nav.site-nav a:hover{color:var(--ink);opacity:1}nav.site-nav a[aria-current=page]{color:var(--ink);font-weight:600}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:var(--radius-btn);font-size:.95rem;font-weight:600;line-height:1.2;letter-spacing:.01em;transition:opacity .2s ease,transform .2s ease,border-color .2s ease,box-shadow .2s ease}.btn-primary{background:var(--btn-bg);color:var(--btn-fg);border:none}.btn-primary:hover{opacity:.85;color:var(--btn-fg);transform:translateY(-1px);box-shadow:0 8px 24px #211d162e}.btn-primary[aria-disabled=true]{cursor:default}.btn-secondary{background:transparent;color:var(--ink);border:1px solid var(--hairline)}.btn-secondary:hover{border-color:var(--ink-2);color:var(--ink);opacity:1;transform:translateY(-1px)}.card{background:var(--card-bg);border:1px solid var(--hairline-soft);border-radius:var(--radius-card);box-shadow:var(--card-shadow);padding:32px;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease}.card:hover{border-color:var(--hairline);transform:translateY(-2px)}.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.22,1,.36,1),transform .7s cubic-bezier(.22,1,.36,1)}.reveal.visible{opacity:1;transform:none}.stagger>.reveal:nth-child(2){transition-delay:.08s}.stagger>.reveal:nth-child(3){transition-delay:.16s}.stagger>.reveal:nth-child(4){transition-delay:.24s}.section{padding:120px 0}.section-alt{background:var(--paper-1);border-top:1px solid var(--hairline-soft);border-bottom:1px solid var(--hairline-soft)}.section-kicker{font-size:.82rem;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--vermillion);margin:0 0 14px}.section-kicker.k-indigo{color:var(--indigo)}.section-kicker.k-pine{color:var(--pine)}.section-title{font-size:clamp(2rem,5vw,3.2rem);font-weight:700;letter-spacing:-.022em;line-height:1.16;margin:0 0 18px;max-width:720px}.section-lead{color:var(--ink-2);font-size:clamp(1.05rem,2vw,1.25rem);font-weight:400;line-height:1.7;margin:0 0 56px;max-width:620px}.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}.feature-card{--tint: var(--sumi)}.feature-card.tint-indigo{--tint: var(--indigo)}.feature-card.tint-vermillion{--tint: var(--vermillion)}.feature-card.tint-pine{--tint: var(--pine)}.feature-card .icon{width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:color-mix(in srgb,var(--tint) 9%,transparent);border:1px solid color-mix(in srgb,var(--tint) 22%,transparent);color:var(--tint);margin-bottom:20px}.feature-card .icon svg{width:22px;height:22px}.feature-card h3{font-size:1.18rem;font-weight:650;letter-spacing:-.01em;margin:0 0 8px}.feature-card p{color:var(--ink-2);margin:0;font-size:.95rem}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.step-card{--tint: var(--sumi);padding:8px 4px}.step-card.tint-indigo{--tint: var(--indigo)}.step-card.tint-vermillion{--tint: var(--vermillion)}.step-card.tint-pine{--tint: var(--pine)}.step-num{display:block;font-size:3.4rem;font-weight:200;line-height:1;letter-spacing:-.03em;color:var(--tint);margin-bottom:18px;font-variant-numeric:tabular-nums}.step-card h3{font-size:1.12rem;font-weight:650;letter-spacing:-.01em;margin:0 0 8px}.step-card p{color:var(--ink-2);margin:0;font-size:.95rem}.trust-boundary{border-left:3px solid var(--sumi);background:var(--card-bg);border-top:1px solid var(--hairline-soft);border-right:1px solid var(--hairline-soft);border-bottom:1px solid var(--hairline-soft);border-radius:0 var(--radius-card) var(--radius-card) 0;padding:26px 30px;margin:0 0 40px;color:var(--ink);line-height:1.85;font-size:1.02rem}.promise-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.promise-card .check{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:999px;background:color-mix(in srgb,var(--pine) 12%,transparent);color:var(--pine);margin-bottom:16px}.promise-card .check svg{width:14px;height:14px}.promise-card h3{font-size:1.02rem;font-weight:650;margin:0 0 8px}.promise-card p{color:var(--ink-2);margin:0;font-size:.92rem}.cta-band{text-align:center;padding:80px 32px;border-radius:24px;background:var(--sumi);color:var(--paper-0)}.cta-band h2{font-size:clamp(1.6rem,3.6vw,2.4rem);font-weight:700;letter-spacing:-.02em;color:var(--paper-0);margin:0 0 14px}.cta-band p{color:color-mix(in srgb,var(--paper-0) 72%,transparent);max-width:480px;margin:0 auto 32px}.cta-band .btn-primary{background:var(--paper-0);color:var(--sumi)}.cta-band .btn-primary:hover{color:var(--sumi);box-shadow:0 8px 24px #0000004d}@media (prefers-color-scheme: dark){.cta-band{background:var(--paper-2);color:var(--ink)}.cta-band h2{color:var(--ink)}.cta-band p{color:var(--ink-2)}.cta-band .btn-primary{background:var(--ink);color:var(--paper-0)}.cta-band .btn-primary:hover{color:var(--paper-0)}}.cta-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}.cta-note{color:var(--ink-3);font-size:.85rem;margin:18px 0 0}.page-main{padding:72px 0 120px}.prose h1{font-size:clamp(2rem,4.5vw,2.8rem);font-weight:700;letter-spacing:-.022em;line-height:1.2;margin:0 0 8px}.prose .updated{color:var(--ink-3);font-size:.85rem;margin:0 0 22px}.prose .lead{color:var(--ink-2);font-size:1.12rem;line-height:1.75;margin:0 0 36px}.prose h2{font-size:1.32rem;font-weight:650;letter-spacing:-.012em;margin:2.6em 0 .6em;position:relative;padding-left:16px;scroll-margin-top:calc(var(--header-h) + 24px)}.prose h2:before{content:"";position:absolute;left:0;top:.3em;width:3px;height:1.05em;border-radius:2px;background:var(--vermillion)}.prose h3{font-size:1.05rem;font-weight:650;margin:1.6em 0 .4em}.prose p,.prose li{line-height:1.9}.prose ul,.prose ol{padding-left:24px}.prose li{margin:8px 0}.prose li::marker{color:var(--ink-3)}.prose .muted{font-size:.92rem}.prose .card{padding:22px 26px;margin:16px 0}.prose .card:hover{transform:none}.toc{background:var(--paper-1);border:1px solid var(--hairline-soft);border-radius:var(--radius-card);padding:22px 26px;margin:0 0 14px}.toc-title{font-size:.76rem;letter-spacing:.16em;color:var(--ink-3);text-transform:uppercase;margin:0 0 10px;font-weight:600}.toc ol{margin:0;padding-left:20px;columns:2;column-gap:32px}.toc li{margin:4px 0;font-size:.92rem;break-inside:avoid;line-height:1.6}.toc a{color:var(--ink-2)}.toc a:hover{color:var(--indigo);opacity:1}.site-footer{border-top:1px solid var(--hairline-soft);background:var(--paper-1);margin-top:56px;padding:56px 0 40px;color:var(--ink-2);font-size:.88rem}.footer-inner{max-width:var(--max-w);margin:0 auto;padding:0 24px;display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap}.footer-brand p{margin:10px 0 0;max-width:320px;line-height:1.7}.site-footer nav{display:flex;gap:20px;flex-wrap:wrap;align-items:center}.site-footer nav a{color:var(--ink-2)}.site-footer nav a:hover{color:var(--ink);opacity:1}.footer-bottom{max-width:var(--max-w);margin:32px auto 0;padding:22px 24px 0;border-top:1px solid var(--hairline-soft);font-size:.82rem;color:var(--ink-3);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}.footer-bottom a{color:var(--ink-2)}@media (max-width: 820px){.feature-grid,.promise-grid,.steps{grid-template-columns:1fr}.section{padding:76px 0}.section-lead{margin-bottom:40px}.toc ol{columns:1}nav.site-nav{gap:14px}.header-inner{padding:10px 20px}.cta-band{padding:56px 24px}}@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}.reveal{opacity:1;transform:none;transition:none}.card,.btn,a{transition:none}}