@font-face{font-family:Instrument Serif;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/instrument-serif-regular.woff2)format("woff2")}@font-face{font-family:Instrument Serif;font-style:italic;font-weight:400;font-display:swap;src:url(/fonts/instrument-serif-italic.woff2)format("woff2")}:root{--bg:#fcfcfa;--surface:#fff;--ink:#16181b;--muted:#5c6066;--faint:#989da4;--hairline:#16181b17;--hairline-strong:#16181b2e;--accent:#2d55e0;--accent-soft:#2d55e012;--shadow:0 12px 32px #16181b1a;--font-serif:"Instrument Serif", "Songti SC", "STSong", ui-serif, Georgia, serif;--font-sans:-apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;--font-mono:ui-monospace, "SF Mono", Menlo, Consolas, monospace;--max-width:1060px;--section-gap:clamp(110px, 16vh, 170px)}@media (prefers-color-scheme:dark){:root{--bg:#0c0d0f;--surface:#141518;--ink:#edeef0;--muted:#9ba0a8;--faint:#686d75;--hairline:#edeef01a;--hairline-strong:#edeef038;--accent:#8aa3ff;--accent-soft:#8aa3ff17;--shadow:0 12px 32px #00000073}}*{box-sizing:border-box;margin:0;padding:0}html{font-size:16px}body{font-family:var(--font-sans);background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.7;overflow-x:hidden}::selection{background:var(--accent);color:var(--bg)}.skip-link{z-index:200;background:var(--surface);color:var(--ink);border-radius:0 0 10px;padding:10px 18px;position:absolute;top:0;left:-9999px}.skip-link:focus{left:0}nav{z-index:100;background:0 0;border-bottom:1px solid #0000;transition:background .35s,border-color .35s;position:fixed;top:0;left:0;right:0}nav.scrolled{background:color-mix(in srgb, var(--bg) 82%, transparent);backdrop-filter:blur(18px);border-bottom-color:var(--hairline)}.nav-inner{max-width:var(--max-width);justify-content:space-between;align-items:center;height:60px;margin:0 auto;padding:0 32px;display:flex}.nav-logo{font-family:var(--font-serif);color:var(--ink);letter-spacing:-.01em;font-size:1.3rem;text-decoration:none}.nav-lang{align-items:center;gap:4px;display:flex}.nav-lang a{color:var(--muted);border-radius:999px;padding:5px 12px;font-size:.84rem;text-decoration:none;transition:color .2s,background .2s}.nav-lang a:hover{color:var(--ink)}.nav-lang a.active{color:var(--ink);background:var(--accent-soft)}.hero{max-width:var(--max-width);text-align:center;margin:0 auto;padding:200px 32px 96px}.hero h1,.hero-main h1{font-family:var(--font-serif);letter-spacing:-.02em;color:var(--ink);max-width:18em;margin:0 auto 30px;font-size:clamp(2.9rem,7.2vw,5.1rem);font-weight:400;line-height:1.08}.hero h1 em,.hero-main h1 em{color:var(--accent);font-style:italic}.hero-sub{color:var(--muted);max-width:36em;margin:0 auto;font-size:1.13rem;line-height:1.75}.hero-actions{flex-wrap:wrap;justify-content:center;align-items:center;gap:14px;margin-top:44px;display:flex}.hero-note{color:var(--faint);margin-top:24px;font-size:.82rem}html.js:not(.reduced-motion) .hero-stage{height:230svh;position:relative}html.js:not(.reduced-motion) .hero-pin{height:100svh;position:sticky;top:0;overflow:hidden}html.js:not(.reduced-motion) .hero-layer{text-align:center;flex-direction:column;align-items:center;padding:72px 32px 44px;display:flex;position:absolute;inset:0}.hero-wordmark{margin-top:auto}.hero-tagline{margin-bottom:auto}html.js:not(.reduced-motion) .hero-main h1{margin-top:auto}html.js:not(.reduced-motion) .hero-main .hero-note{margin-bottom:auto}.hero-intro{z-index:2;pointer-events:none}.hero-main{z-index:1}html.js:not(.reduced-motion) .hero-main{opacity:0}.hero-wordmark{font-family:var(--font-serif);letter-spacing:-.015em;color:var(--ink);font-size:clamp(3.4rem,9vw,6rem);line-height:1.05;animation:.9s cubic-bezier(.16,1,.3,1) .1s both rise}.hero-tagline{color:var(--muted);margin-top:18px;font-size:1.08rem;animation:.9s cubic-bezier(.16,1,.3,1) .3s both rise}.hero-cue{color:var(--faint);margin-left:-11px;animation:2.6s ease-in-out 1.2s infinite cue;position:absolute;bottom:34px;left:50%}@keyframes cue{0%,to{opacity:.35;transform:translateY(0)}50%{opacity:.9;transform:translateY(6px)}}html:not(.js) .hero-intro,html.reduced-motion .hero-intro{display:none}html:not(.js) .hero-main,html.reduced-motion .hero-main{max-width:var(--max-width);text-align:center;margin:0 auto;padding:200px 32px 96px;position:static}@media (width>=900px){html.js:not(.reduced-motion) .pin-stage{height:var(--runway,220vh);position:relative}html.js:not(.reduced-motion) .pin-stage .pin-viewport{flex-direction:column;justify-content:center;min-height:100svh;padding-top:84px;padding-bottom:36px;display:flex;position:sticky;top:0;overflow:hidden}}.btn{font-family:var(--font-sans);border-radius:999px;align-items:center;gap:10px;padding:14px 28px;font-size:.94rem;font-weight:500;text-decoration:none;transition:transform .25s cubic-bezier(.16,1,.3,1),box-shadow .25s,border-color .25s,background .25s;display:inline-flex}.btn svg{flex-shrink:0}.btn-primary{background:var(--ink);color:var(--bg)}.btn-primary:hover{box-shadow:var(--shadow);transform:translateY(-2px)}.btn-ghost{color:var(--ink);border:1px solid var(--hairline-strong);background:0 0}.btn-ghost:hover{border-color:var(--ink);transform:translateY(-2px)}.badge-soon{letter-spacing:.08em;text-transform:uppercase;color:var(--accent);background:var(--accent-soft);border:1px solid color-mix(in srgb, var(--accent) 25%, transparent);white-space:nowrap;border-radius:999px;align-items:center;gap:8px;padding:7px 16px;font-size:.8rem;font-weight:600;display:inline-flex}section{max-width:var(--max-width);margin:var(--section-gap) auto 0;padding:0 32px}section.full-bleed{max-width:none;padding:0}.section-inner{max-width:var(--max-width);margin:0 auto;padding:0 32px}.eyebrow{letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-bottom:20px;font-size:.76rem;font-weight:600}.section-title{font-family:var(--font-serif);letter-spacing:-.015em;max-width:18em;margin-bottom:20px;font-size:clamp(2rem,4.2vw,3rem);font-weight:400;line-height:1.15}.section-desc{color:var(--muted);max-width:37em;font-size:1.05rem;line-height:1.75}.section-desc a,.inline-link{color:var(--accent);border-bottom:1px solid color-mix(in srgb, var(--accent) 35%, transparent);text-decoration:none;transition:border-color .2s}.section-desc a:hover,.inline-link:hover{border-bottom-color:var(--accent)}.features{grid-template-columns:repeat(3,1fr);gap:56px 40px;margin-top:80px;display:grid}.feature{border-top:1px solid var(--hairline-strong);padding-top:28px}.feature svg{width:22px;height:22px;color:var(--ink);margin-bottom:18px;display:block}.feature h3{letter-spacing:-.01em;margin-bottom:8px;font-size:1.02rem;font-weight:600}.feature p{color:var(--muted);font-size:.93rem;line-height:1.65}.statement{text-align:center}.statement-line{font-family:var(--font-serif);letter-spacing:-.01em;color:var(--ink);font-size:clamp(2rem,5vw,3.6rem);line-height:1.4}.statement-note{color:var(--muted);margin-top:40px;font-size:1rem}@media (width>=900px){html.js:not(.reduced-motion) .statement-beats{min-height:9em;position:relative}html.js:not(.reduced-motion) .statement-beats .statement-line{text-align:center;position:absolute;top:50%;left:0;right:0;transform:translateY(-50%)}}.statement-beats .statement-line{padding:.35em 0}@media (width>=900px){html.js:not(.reduced-motion) .statement-beats .statement-line{padding:0}}.steps{grid-template-columns:repeat(4,1fr);gap:48px 36px;margin-top:80px;display:grid}.step{border-top:1px solid var(--hairline-strong);padding-top:24px}.step-num{font-family:var(--font-serif);color:var(--accent);margin-bottom:16px;font-size:2rem;line-height:1}.step h3{letter-spacing:-.01em;margin-bottom:8px;font-size:.99rem;font-weight:600}.step p{color:var(--muted);font-size:.9rem;line-height:1.65}.specs{border-top:1px solid var(--hairline-strong);max-width:860px;margin-top:72px}.spec{border-bottom:1px solid var(--hairline);justify-content:space-between;align-items:baseline;gap:32px;margin:0;padding:18px 0;display:flex}.spec-key{color:var(--muted);text-transform:uppercase;letter-spacing:.08em;flex-shrink:0;font-size:.8rem;font-weight:600}.spec-val{font-family:var(--font-mono);color:var(--ink);text-align:right;font-size:.86rem}.cta{text-align:center}.cta h2{font-family:var(--font-serif);letter-spacing:-.015em;margin-bottom:18px;font-size:clamp(2.2rem,4.6vw,3.3rem);font-weight:400;line-height:1.15}.cta h2 em{color:var(--accent);font-style:italic}.cta p{color:var(--muted);max-width:32em;margin:0 auto;font-size:1.05rem}.cta-actions{flex-wrap:wrap;justify-content:center;align-items:center;gap:14px;margin-top:40px;display:flex}footer{max-width:var(--max-width);margin:var(--section-gap) auto 0;border-top:1px solid var(--hairline);color:var(--muted);justify-content:space-between;align-items:center;padding:36px 32px 52px;font-size:.84rem;display:flex}.footer-right a{color:var(--muted);text-decoration:none;transition:color .2s}.footer-right a:hover{color:var(--ink)}.fn-ref{vertical-align:super;margin-left:1px;font-size:.62em;font-weight:600;line-height:0}.fn-ref a{color:var(--accent);text-decoration:none}.fn-ref a:hover{text-decoration:underline}.page-notes{max-width:var(--max-width);margin:var(--section-gap) auto 0;border-top:1px solid var(--hairline);padding:40px 32px 0}.notes-list{counter-reset:note;gap:18px;margin-top:22px;list-style:none;display:grid}.note{counter-increment:note;padding-left:30px;scroll-margin-top:80px;position:relative}.note:before{content:counter(note);font-family:var(--font-serif);color:var(--accent);font-size:1.05rem;line-height:1.4;position:absolute;top:0;left:0}.note p{color:var(--muted);font-size:.88rem;line-height:1.7}.note strong{color:var(--ink);font-weight:600}.note a{color:var(--accent);border-bottom:1px solid color-mix(in srgb, var(--accent) 35%, transparent);text-decoration:none;transition:border-color .2s}.note a:hover{border-bottom-color:var(--accent)}.note:target{background:var(--accent-soft);border-radius:10px;padding-top:6px;padding-bottom:6px}[data-decrypt] span{will-change:contents}@keyframes rise{0%{opacity:0;transform:translateY(22px)}to{opacity:1;transform:translateY(0)}}@media (prefers-reduced-motion:reduce){.hero-wordmark,.hero-tagline,.hero-cue{animation:none}}.privacy-content{max-width:680px;margin:0 auto}.privacy-content h2{letter-spacing:-.01em;margin-top:44px;margin-bottom:12px;font-size:1.25rem;font-weight:600}.privacy-content h2:first-child{margin-top:0}.privacy-content p{color:var(--muted);margin-bottom:16px;font-size:1rem;line-height:1.75}@media (width<=900px){.features{grid-template-columns:repeat(2,1fr);gap:44px 32px}.steps{grid-template-columns:repeat(2,1fr)}}@media (width<=600px){:root{--section-gap:clamp(80px, 12vh, 110px)}.hero,html:not(.js) .hero-main,html.reduced-motion .hero-main{padding:150px 22px 64px}html.js:not(.reduced-motion) .hero-layer{padding:64px 22px 36px}.hero-main h1{margin-bottom:20px;font-size:clamp(2.1rem,10.5vw,2.9rem)}.hero-sub{font-size:1rem;line-height:1.65}.hero-actions{gap:10px;margin-top:26px}.hero-note{margin-top:16px}.hero-wordmark{font-size:clamp(2.7rem,11vw,3.4rem)}.hero-cue{bottom:20px}section{padding:0 22px}section.full-bleed{padding:0}.section-inner{padding:0 22px}.nav-inner{padding:0 18px}.features,.steps{grid-template-columns:1fr;gap:36px}.spec{flex-direction:column;align-items:flex-start;gap:4px}.spec-val{text-align:left}.btn{padding:12px 22px;font-size:.89rem}footer{text-align:center;flex-direction:column;gap:12px}.page-notes{padding:32px 22px 0}}@media (height<=640px){.hero-main h1{margin-bottom:16px;font-size:clamp(1.9rem,9vh,3.4rem)}.hero-sub{font-size:.96rem;line-height:1.6}.hero-actions{margin-top:22px}.hero-note{margin-top:12px}.hero-wordmark{font-size:clamp(2.3rem,12vh,4.2rem)}.hero-cue{display:none}}html[lang=zh-CN] body{line-height:1.8}html[lang=zh-CN] .hero h1,html[lang=zh-CN] .hero-main h1{letter-spacing:.015em;font-size:clamp(2.5rem,6.4vw,4.4rem);font-weight:600;line-height:1.22}html[lang=zh-CN] .hero h1 em,html[lang=zh-CN] .hero-main h1 em,html[lang=zh-CN] .cta h2 em{font-style:normal}html[lang=zh-CN] .hero-sub{line-height:1.9}html[lang=zh-CN] .eyebrow{letter-spacing:.3em}html[lang=zh-CN] .section-title{letter-spacing:.01em;font-weight:600;line-height:1.3}html[lang=zh-CN] .section-desc,html[lang=zh-CN] .feature p,html[lang=zh-CN] .step p{line-height:1.8}html[lang=zh-CN] .statement-line{letter-spacing:.02em;font-weight:600;line-height:1.6}html[lang=zh-CN] .cta h2{letter-spacing:.01em;font-weight:600;line-height:1.3}html[lang=zh-CN] .spec-key{text-transform:none;letter-spacing:.06em}html[lang=zh-CN] .spec-val{font-family:var(--font-sans);font-size:.92rem}html[lang=zh-CN] .privacy-content p{line-height:1.85}html[lang=zh-CN] .badge-soon{letter-spacing:.14em}@media (width<=600px){html[lang=zh-CN] .hero-main h1{font-size:clamp(2rem,9.5vw,2.5rem)}}@media (height<=640px){html[lang=zh-CN] .hero-main h1{font-size:clamp(1.8rem,8.5vh,3rem)}}
