:root{--ink:#23483f;--paper:#fbf9f3;--white:#fff;--soft:#edf0e9;--line:#d9dfd5;--muted:#56665f;--gold:#967849;--serif:Georgia,"Yu Mincho","Hiragino Mincho ProN",serif;--sans:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;color-scheme:light;scroll-behavior:smooth;scroll-padding-top:28px}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.9;-webkit-font-smoothing:antialiased}a{color:inherit;text-underline-offset:5px}button,input{font:inherit}button,a,input,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #a57936;outline-offset:5px}img{max-width:100%;display:block}h1,h2,h3,p{margin:0}h1,h2{font-family:var(--serif);font-weight:500}h2{font-size:clamp(28px,3.3vw,42px);line-height:1.65;letter-spacing:.04em}h3{font-size:21px;line-height:1.7;font-weight:500}p{overflow-wrap:anywhere}.wrap{width:min(1120px,calc(100% - 80px));margin-inline:auto}.section{padding-block:104px}.eyebrow{font-size:12px;line-height:1.5;letter-spacing:.16em;font-weight:600;margin-bottom:20px}.button{display:inline-flex;justify-content:center;align-items:center;min-height:54px;padding:15px 28px;background:var(--ink);color:var(--white);border:1px solid var(--ink);border-radius:5px;text-decoration:none;font-size:15px;font-weight:500;line-height:1.6;transition:background .18s,transform .18s;cursor:pointer}.button:hover{background:#356154}.button:active{transform:translateY(1px)}.button:disabled{cursor:wait;opacity:.65}.button-small{min-height:43px;font-size:14px;padding:9px 19px}.skip{position:absolute;left:16px;top:-80px;padding:12px;background:#fff;z-index:30}.skip:focus{top:8px}.site-header{height:102px;display:flex;justify-content:space-between;align-items:center;gap:20px}.wordmark{font-family:Georgia,serif;font-size:36px;line-height:1.2;text-decoration:none;letter-spacing:-1.7px}.wordmark span{color:var(--gold)}.site-header nav{display:flex;align-items:center;gap:28px}.nav-detail{text-decoration:none;font-size:14px}.nav-detail:hover{text-decoration:underline}.hero{display:grid;grid-template-columns:1.05fr 1fr;gap:44px;align-items:center;padding-block:48px 76px}.hero 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h3{margin-bottom:16px}.letter-card>p:not(.letter-number){font-size:15px;line-height:2;color:var(--muted)}.letter-example{margin-top:28px;padding-top:19px;border-top:1px solid #ced7c8}.letter-example>span{font-size:12px;color:var(--muted)}.letter-example p{margin-top:7px;font-family:var(--serif);font-size:18px;line-height:1.9}.sample-section{display:grid;grid-template-columns:.85fr 1fr;gap:80px;align-items:center}.sample-heading>p:not(.eyebrow){color:var(--muted);line-height:2;margin-top:26px;font-size:15px}.sample-note{display:block;font-size:12px;color:var(--muted);margin-top:17px}.sample-letter{background:#fffdfa;border:1px solid #e1e4db;box-shadow:0 15px 42px rgba(31,56,45,.065);padding:35px 36px}.sample-brand{font-family:Georgia,serif;font-size:30px;border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:27px;letter-spacing:-1px}.sample-category{font-size:12px;color:var(--muted);letter-spacing:.05em;margin-bottom:10px}.sample-letter 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#d3dccd}.signup-box-title{font-family:var(--serif);font-size:23px;line-height:1.7;margin-bottom:8px}.signup-box-intro{font-size:13px;color:var(--muted);margin-bottom:24px}form>label:not(.consent){display:block;font-size:14px;margin-bottom:8px}input[type=email]{width:100%;height:54px;border:1px solid #aebcae;border-radius:4px;padding:12px 14px;font-size:16px;line-height:1.6;color:var(--ink);background:#fff}input::placeholder{color:#687970}.consent{display:flex;gap:10px;align-items:flex-start;font-size:12px;line-height:1.85;margin:20px 0;cursor:pointer}.consent input{flex:0 0 18px;width:18px;height:18px;margin:3px 0 0;accent-color:var(--ink)}form .button{width:100%;padding-inline:10px}.form-message{margin-top:13px;min-height:23px;font-size:13px;color:#815522;line-height:1.7}.signup-help{font-size:12px;color:var(--muted);margin-top:10px}.risk-note{font-size:12px;color:var(--muted);line-height:1.8;margin-top:18px;padding-top:17px;border-top:1px solid var(--line)}.site-footer{display:flex;justify-content:space-between;align-items:start;gap:35px;padding-block:42px}.site-footer>div{text-align:right}.site-footer p{font-size:12px;color:var(--muted)}.site-footer nav{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:12px 24px;margin-top:12px;font-size:12px}.site-footer .copyright{font-size:11px;margin-top:15px}.mobile-register,.mobile-break{display:none}[hidden]{display:none!important}
@media(min-width:1400px){.hero{padding-block:65px 85px}.hero-image{height:520px}}
@media(max-width:1000px){.wrap{width:calc(100% - 56px)}.hero{gap:26px}.hero h1{font-size:35px}.hero-image{height:455px}.hero-caption{left:-12px;right:12px;padding:23px}.hero-caption p{font-size:17px}.hero-description{font-size:14px}.hero-intro{font-size:17px}.hero .reassurance{font-size:11px}.invitation,.sample-section,.about-layout,.faq-section,.signup-layout{gap:42px}.letter-grid{gap:24px}.letter-card h3{font-size:18px}.letter-example p{font-size:16px}.signup-box{padding:26px}.section{padding-block:80px}}
@media(max-width:760px){.wrap{width:calc(100% - 40px)}.site-header{height:81px}.wordmark{font-size:31px}.nav-detail{display:none}.site-header nav{gap:0}.button-small{font-size:12px;padding:9px 12px;min-height:41px}.hero{grid-template-columns:1fr;padding-top:29px;gap:34px;padding-bottom:42px}.hero .eyebrow{font-size:11px;margin-bottom:17px}.hero h1{font-size:clamp(30px,7.7vw,45px);line-height:1.65;letter-spacing:.015em;margin-bottom:20px}.hero-intro{font-size:17px}.hero-description{font-size:14px;margin-bottom:23px}.hero-button{width:100%;max-width:420px}.hero .reassurance{font-size:11px}.hero-visual{padding-bottom:38px;max-width:560px;width:100%;margin-inline:auto}.hero-image{height:290px;border-radius:65px 5px 5px 5px;object-position:center 57%}.hero-caption{left:15px;right:15px;padding:17px 20px}.hero-caption span{font-size:10px;margin-bottom:4px}.hero-caption p{font-size:17px}.intro-strip{padding-block:25px}.intro-strip>.wrap{display:block}.intro-strip p{font-size:20px;line-height:1.8}.intro-strip span{display:block;font-size:12px;margin-top:9px}.section{padding-block:62px}.invitation,.sample-section,.about-layout,.faq-section,.signup-layout{grid-template-columns:1fr;gap:29px}.eyebrow{font-size:11px;margin-bottom:15px}h2{font-size:28px;line-height:1.65}.invitation-copy{font-size:15px}.invitation-copy p+p{margin-top:18px}.section-heading{display:block;margin-bottom:29px}.section-heading>p{margin-top:18px;font-size:14px}.letter-grid{grid-template-columns:1fr;gap:35px}.letter-card{padding-top:18px}.letter-number{font-size:32px;margin-bottom:15px}.letter-card h3{font-size:21px;margin-bottom:12px}.letter-card>p:not(.letter-number){font-size:15px}.letter-example{margin-top:20px;padding-top:14px}.letter-example p{font-size:17px}.sample-heading>p:not(.eyebrow){margin-top:18px}.sample-letter{padding:28px 24px}.sample-letter h3{font-size:22px}.sample-letter>p:not(.sample-category){font-size:15px}.sample-question{padding:16px}.sample-question p{font-size:15px}.about-section{padding-block:59px}.about-name{margin-top:25px}.about-copy p{font-size:15px}.faq-section{gap:26px}summary{font-size:15px;padding-block:21px}details>p{font-size:14px;padding-right:12px}.signup-section{padding-block:58px}.signup-layout>div:first-child>p:last-child{font-size:15px;margin-top:17px}.signup-box{padding:25px 20px}.signup-box-title{font-size:22px}.site-footer{display:block;padding-block:34px 105px}.site-footer>div{text-align:left;margin-top:22px}.site-footer nav{justify-content:flex-start;gap:12px 18px}.mobile-register{display:flex;position:fixed;bottom:14px;left:20px;right:20px;z-index:20;box-shadow:0 5px 22px #14372e30;min-height:50px;padding:12px 18px;font-size:14px}.mobile-break{display:block}}
@media(prefers-reduced-motion:reduce){:root{scroll-behavior:auto}*{transition:none!important}}
.hero-description,.section-heading>p,.letter-card>p:not(.letter-number),.sample-heading>p:not(.eyebrow),.sample-letter>p:not(.sample-category),.about-copy p,.invitation-copy,details>p{font-size:1rem}
.hero h1 span{white-space:normal}.sample-question p{font-size:1rem}.consent{font-size:.875rem}.letter-number span,.hero-caption span,.site-footer .copyright{font-size:.75rem}
@media(max-width:760px){.hero h1{font-size:clamp(1.875rem,7.7vw,2.8125rem)}.hero .reassurance{font-size:.75rem}.signup-layout>div:first-child>p:last-child{font-size:1rem}.hero-visual{max-width:560px}}

/* Reader questions, channel context and an interactive sample letter. */
.invitation-lead{margin-top:24px;color:var(--muted);font-size:1rem;line-height:2}.reader-thoughts{border-top:1px solid var(--line)}.reader-thought{padding:24px 0;border-bottom:1px solid var(--line)}.thought-question{display:flex;gap:14px;align-items:baseline;font-size:1.0625rem;font-weight:500;line-height:1.85}.thought-index{flex-shrink:0;font:italic 1rem/1.8 var(--serif);color:var(--gold)}.thought-answer{padding-left:33px;margin-top:12px;font-size:1rem;line-height:2;color:var(--muted)}.difference-section{background:#fffdf8;border-top:1px solid var(--line)}.difference-heading{text-align:center}.difference-heading>p:last-child{margin-top:24px;color:var(--muted);font-size:1rem;line-height:2}.difference-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;max-width:940px;margin:42px auto 0}.channel-card{padding:34px 36px;border:1px solid var(--line);background:var(--paper)}.channel-label{font-size:.75rem;letter-spacing:.13em;color:var(--muted);margin-bottom:16px}.channel-card h3{font:500 1.5rem/1.75 var(--serif);margin-bottom:15px}.channel-card>p:not(.channel-label){font-size:1rem;line-height:2;color:var(--muted)}.channel-example{display:block;padding-top:18px;margin-top:24px;border-top:1px solid var(--line);font-size:.875rem;line-height:1.9}.channel-card-letter{background:var(--ink);color:var(--paper);border-color:var(--ink)}.channel-card-letter .channel-label,.channel-card-letter>p:not(.channel-label){color:#e3e9dd}.channel-card-letter .channel-example{border-color:#628073;color:#f2f4ec}.difference-close{text-align:center;margin-top:48px;font:500 clamp(1.375rem,2.4vw,1.875rem)/2 var(--serif);letter-spacing:.03em}.thought-marker{background:linear-gradient(90deg,#d2d9b9,#d2d9b9) no-repeat 0 92%;background-size:100% .3em;box-decoration-break:clone;-webkit-box-decoration-break:clone}.motion-ready .thought-marker{background-size:0 .3em;transition:background-size 1.1s ease}.motion-ready .thought-marker.is-marked{background-size:100% .3em}.sample-section{align-items:start}.sample-heading{padding-top:18px}.sample-note{font-size:.875rem}.letter-preview{min-width:0;border:1px solid #d1dacb;border-radius:8px;background:#fffdfa;box-shadow:0 15px 42px #1f382d0d;overflow:hidden}.letter-preview-toggle{display:block;padding:32px;position:relative}.letter-preview-toggle::after{display:none}.mail-sender{display:flex;align-items:center;gap:12px;padding-bottom:22px;border-bottom:1px solid var(--line)}.mail-avatar{display:grid;place-items:center;flex:0 0 46px;height:46px;background:var(--ink);color:#fff;font:italic 1.75rem/1 Georgia,serif;border-radius:50%}.mail-sender strong{display:block;font-size:1rem;font-weight:500}.mail-recipient{display:block;font-size:.75rem;color:var(--muted)}.mail-sample-label{margin-left:auto;font-size:.75rem;letter-spacing:.08em;color:var(--muted)}.mail-subject{display:block;font:500 clamp(1.25rem,2vw,1.5rem)/1.85 var(--serif);margin-top:25px}.mail-snippet{display:block;color:var(--muted);font-size:1rem;line-height:2;margin-top:15px}.mail-open-control{display:flex;justify-content:space-between;align-items:center;gap:12px;padding-top:23px;margin-top:23px;border-top:1px solid var(--line);font-size:.875rem;font-weight:500}.mail-toggle-symbol{display:grid;place-items:center;flex:0 0 32px;height:32px;border:1px solid #a9b8a4;border-radius:50%;font-size:1.25rem;line-height:1}.mail-toggle-symbol::before{content:'＋'}.when-open{display:none}.letter-preview[open] .when-closed{display:none}.letter-preview[open] .when-open{display:inline}.letter-preview[open] .mail-toggle-symbol::before{content:'−'}.letter-preview-toggle:hover .mail-open-control{color:#52704e}.letter-preview-toggle:focus-visible{outline-offset:-5px}.letter-preview[open] .letter-preview-toggle{border-bottom:1px solid var(--line);background:#f0f3eb}.letter-preview[open] .mail-subject,.letter-preview[open] .mail-snippet{display:none}.letter-preview[open] .mail-sender{border:0;padding:0}.letter-preview[open] .mail-open-control{margin-top:17px;padding-top:14px}.letter-preview .sample-letter{box-shadow:none;border:0;background:transparent}.letter-preview[open] .sample-letter{animation:letter-appear .35s ease-out}@keyframes letter-appear{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:760px){.invitation-lead{margin-top:18px}.reader-thought{padding:21px 0}.thought-question{font-size:1rem;gap:10px}.thought-answer{padding-left:28px}.difference-heading{text-align:left}.difference-heading h2{font-size:clamp(1.5rem,6.3vw,1.75rem)}.difference-heading>p:last-child{margin-top:20px}.difference-grid{grid-template-columns:1fr;gap:16px;margin-top:28px}.channel-card{padding:26px 24px}.channel-card h3{font-size:1.375rem}.channel-example{margin-top:18px;padding-top:16px}.difference-close{margin-top:30px;text-align:left;font-size:clamp(1.0625rem,4.3vw,1.375rem)}.sample-heading{padding-top:0}.letter-preview-toggle{padding:26px 23px}.mail-sender{gap:10px}.mail-sample-label{font-size:.75rem}.mail-snippet br{display:none}.mail-open-control{margin-top:20px;padding-top:20px}.mobile-register{bottom:calc(14px + env(safe-area-inset-bottom,0px))}}
@media(prefers-reduced-motion:reduce){.motion-ready .thought-marker{background-size:100% .3em;transition:none}.letter-preview[open] .sample-letter{animation:none}}