:root{--paper:#f6f4ee;--ink:#172d38;--sea:#263e48;--warm:#bb946c;--warm-light:#f0c79b;--hair:#cfcac1;--cream:#e9e8e1;--white:#fffdf8;--body:'Noto Sans JP','Yu Gothic',Meiryo,sans-serif;--serif:'Noto Serif JP','Yu Mincho','Hiragino Mincho ProN',serif;--space-section:110px;--space-section-small:76px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:18px;line-height:1.95;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}a:focus-visible,summary:focus-visible{outline:3px solid var(--ink);outline-offset:4px}img{display:block;max-width:100%;height:auto}figure,dl,dd,h1,h2,h3,p{margin:0}.shell{width:min(calc(100% - 96px),1200px);margin:auto}.skip{position:absolute;top:-100px;left:20px;background:#fff;padding:15px;z-index:100}.skip:focus{top:8px}
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.experience{background:var(--ink);color:var(--white)}.experience-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:clamp(40px,6vw,85px);align-items:center;padding-top:82px;padding-bottom:82px}.experience-copy>p{font-size:18px;color:#e3e8e9;max-width:610px}.experience-stats{display:flex;flex-wrap:wrap;gap:25px 30px;margin:32px 0}.experience-stats>div{min-width:0}.experience-stats>div+div{border-left:1px solid #61717a;padding-left:30px}.experience-stats dt{font-size:18px}.experience-stats dd{display:flex;align-items:baseline;gap:6px;line-height:1.2;margin-top:10px}.experience-stats strong{font:400 clamp(65px,7vw,100px)/1.1 Georgia,serif;letter-spacing:-.06em;color:var(--warm-light)}.experience-stats dd span{font-size:23px}.experience-photo img{width:100%;aspect-ratio:4/3;object-fit:cover;filter:grayscale(1) contrast(.95)}

.yt-b-work__heading{margin-bottom:52px}.yt-b-work__list{border-top:1px solid var(--ink)}.yt-b-work__item{display:grid;grid-template-columns:92px minmax(0,.85fr) minmax(0,1.15fr);align-items:center;gap:36px;padding:38px 0;border-bottom:1px solid var(--hair)}.yt-b-work__illustration{display:block;width:92px;height:92px;color:var(--sea);align-self:start}.yt-b-work__title{font:500 clamp(26px,2.2vw,34px)/1.55 var(--serif);letter-spacing:-.02em;min-width:0;align-self:start}.yt-b-work__title>span{display:block}.yt-b-work__body{min-width:0}.yt-b-work__intro{font-size:18px;line-height:1.85}.yt-b-work__details{margin-top:12px}.yt-b-work__details>summary{display:flex;align-items:center;justify-content:space-between;gap:16px;width:max-content;max-width:100%;min-height:48px;padding:7px 0;font-size:18px;line-height:1.6;list-style:none;cursor:pointer;border-bottom:1px solid var(--warm)}.yt-b-work__details>summary::-webkit-details-marker{display:none}.yt-b-work__details>summary:focus-visible{outline:3px solid var(--ink);outline-offset:5px}.yt-b-work__details>summary:hover{color:var(--sea);border-bottom-color:var(--ink)}.yt-b-work__toggle{display:flex;align-items:center;justify-content:center;flex:0 0 24px;width:24px;height:24px;color:var(--ink)}.yt-b-work__toggle::after{content:'＋';font-size:23px;line-height:1}.yt-b-work__details[open] .yt-b-work__toggle::after{content:'−'}.yt-b-work__topics{margin:20px 0 0;padding-left:1.2em;font-size:18px;line-height:1.85}.yt-b-work__topics li+li{margin-top:10px}.yt-b-work__topics li::marker{color:var(--warm)}
.yt-b-approach{background:var(--ink);color:var(--white)}.yt-b-approach__inner{display:grid;grid-template-columns:minmax(0,1.9fr) minmax(0,1fr);align-items:start;text-align:left;column-gap:clamp(48px,5vw,72px);padding-top:96px;padding-bottom:96px}.yt-b-approach__heading{display:grid;row-gap:20px;font:500 clamp(28px,3.3vw,36px)/1.5 var(--serif);letter-spacing:-.035em;min-width:0}.yt-b-approach__statement{display:flex;align-items:baseline;min-width:0}.yt-b-approach__phrase{display:inline-block;flex:0 0 auto;white-space:nowrap}.yt-b-approach__phrase+.yt-b-approach__phrase{font-size:clamp(48px,4.5vw,64px);line-height:1.35}.yt-b-approach__message{min-width:0}.yt-b-approach__lead{font:500 clamp(26px,2.3vw,32px)/1.6 var(--serif);letter-spacing:-.015em;color:var(--warm-light)}.yt-b-approach__lead-unit{display:block}.yt-b-approach__intro{font-size:18px;line-height:1.95;margin-top:22px}.yt-b-approach__intro-unit{display:inline-block;white-space:nowrap}
.pad-y{padding:var(--space-section) 0}.serif-heading{font-size:clamp(36px,3.5vw,52px);line-height:1.65;letter-spacing:-.035em}
.seminar{background:var(--paper)}.seminar-grid{display:grid;grid-template-columns:minmax(0,1.07fr) minmax(0,.93fr);gap:clamp(45px,6vw,95px);align-items:center;padding:var(--space-section) 0}.seminar-photo img{width:100%;height:auto;aspect-ratio:3/2;object-fit:cover;filter:saturate(.88)}.seminar-copy>p{font-size:18px;line-height:2;margin:25px 0}.seminar-themes{border-top:1px solid var(--hair);margin-top:28px}.seminar-themes>div{padding:20px 0;border-bottom:1px solid var(--hair)}.seminar-themes dt{font-size:20px;font-weight:600;margin-bottom:6px}.seminar-themes dd{font-size:18px;line-height:1.85}.seminar-copy>.seminar-online{margin:25px 0;font-size:18px;line-height:1.85}
.profile{background:var(--cream)}.profile-intro{display:grid;grid-template-columns:minmax(0,1fr) 190px;gap:clamp(40px,7vw,95px);align-items:center;max-width:1020px;margin-bottom:50px}.profile-copy>p{max-width:740px;margin-top:25px;font-size:18px;line-height:2}.facts{border-top:1px solid var(--ink)}.facts>div{display:grid;grid-template-columns:165px minmax(0,1fr);gap:30px;border-bottom:1px solid var(--hair);padding:27px 0}.facts dt,.facts dd{font-size:18px;line-height:1.85}.facts dt{font-weight:600}.plain-list{list-style:none;margin:0;padding:0}.plain-list li+li{margin-top:8px}.qualification-list{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:8px 30px}.qualification-list li+li{margin-top:0}.running-photo{width:190px;max-width:100%;background:#dee5e6}.running-photo img{width:100%;height:auto;object-fit:contain;filter:saturate(.92)}
.contact{background:var(--ink);color:var(--white)}.contact-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:clamp(40px,6vw,85px);align-items:center}.contact h2>span{display:block}.contact-grid>div>p{font-size:18px;margin-top:25px;max-width:530px;color:#e3e8e9}.button-warm{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:82px;padding:24px 30px;background:var(--warm-light);color:var(--ink);font-size:21px;font-weight:600;line-height:1.6;max-width:430px}.button-warm:hover{background:#ffddba}.button-warm span:last-child{font-size:27px;flex-shrink:0}.contact a:focus-visible{outline-color:var(--white)}
.footer{background:var(--ink);color:white;padding:52px 0 calc(80px + env(safe-area-inset-bottom,0px));border-top:1px solid #52656e}.footer-inner{display:flex;align-items:end;justify-content:space-between;gap:32px}.footer strong{font:500 26px var(--serif);letter-spacing:.12em}.footer p{font-size:18px;line-height:1.8;margin-top:20px;color:#e0e5e8}.footer a{font-size:18px;border-bottom:1px solid #e0e5e8;overflow-wrap:anywhere}
.footer a:focus-visible{outline-color:var(--white)}
.back-to-top{position:fixed;right:calc(16px + env(safe-area-inset-right,0px));bottom:calc(16px + env(safe-area-inset-bottom,0px));z-index:20;width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:transparent;color:var(--ink);border:0;border-radius:50%;box-shadow:none}.back-to-top svg{display:block;width:48px;height:48px}.back-to-top:focus-visible{outline:3px solid var(--ink);outline-offset:3px;box-shadow:0 0 0 3px var(--white)}
@media(max-width:1100px){.shell{width:calc(100% - 70px)}.seminar-grid{gap:45px}}
@media(max-width:959px){.shell{width:calc(100% - 48px)}.header{height:76px}.brand{font-size:27px}.desktop-nav{display:none}.mobile-nav{display:block;position:relative}.mobile-nav summary{cursor:pointer;min-width:48px;min-height:48px;padding:5px 6px;list-style:none;display:flex;justify-content:center}.mobile-nav summary::-webkit-details-marker{display:none}.mobile-nav__icon{position:relative;display:block;width:24px;height:18px}.mobile-nav__icon>span{position:absolute;left:0;display:block;width:24px;height:2px;background:currentColor}.mobile-nav__icon>span:nth-child(1){top:0}.mobile-nav__icon>span:nth-child(2){top:8px}.mobile-nav__icon>span:nth-child(3){top:16px}.mobile-nav__label{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.mobile-nav__label-close{display:none}.mobile-nav[open] .mobile-nav__icon>span:nth-child(1){top:8px;transform:rotate(45deg)}.mobile-nav[open] .mobile-nav__icon>span:nth-child(2){opacity:0}.mobile-nav[open] .mobile-nav__icon>span:nth-child(3){top:8px;transform:rotate(-45deg)}.mobile-nav[open] .mobile-nav__label-open{display:none}.mobile-nav[open] .mobile-nav__label-close{display:inline}.mobile-nav nav{position:absolute;right:0;top:calc(100% + 13px);width:min(320px,calc(100vw - 48px));background:var(--paper);border:1px solid var(--hair);padding:12px 20px;z-index:10}.mobile-nav nav a{padding:9px 0}.hero-grid{width:min(calc(100% - 48px),620px);grid-template-columns:minmax(0,1fr) minmax(0,clamp(210px,27vw,260px));grid-template-rows:auto auto auto auto;gap:22px 24px;padding-top:24px;padding-bottom:40px}.hero-identity{grid-column:1/-1;grid-row:1;align-self:auto;gap:8px 18px}.identity-role{font-size:24px;border:0;padding:0}.identity-name{font-size:32px;letter-spacing:.05em}.hero h1{grid-column:1/-1;grid-row:2;font-size:clamp(48px,5.6vw,54px)}.hero-portrait{grid-column:2;grid-row:3;height:clamp(300px,36vw,340px)}.hero-details{display:contents}.hero-desc{grid-column:1;grid-row:3;align-self:center}.hero-actions{grid-column:1/-1;grid-row:4;max-width:none;margin-top:0}.button-dark{padding:16px 20px}.experience-grid{gap:35px;padding:76px 0;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr)}.experience-stats{gap:20px}.experience-stats>div+div{padding-left:20px}.experience-stats strong{font-size:70px}.experience-stats dd span{font-size:20px}.pad-y{padding:90px 0}.seminar-grid{gap:30px}.profile-intro{gap:35px}.qualification-list{grid-template-columns:minmax(0,1fr)}.contact-grid{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:35px}.contact h2{font-size:clamp(31px,4vw,40px)}.button-warm{font-size:20px;padding:22px}}
@media(max-width:599px){html{scroll-padding-top:76px}.shell{width:calc(100% - 38px)}.header{height:68px}.brand{font-size:26px}.mobile-nav nav{width:min(300px,calc(100vw - 38px))}.hero-grid{width:min(calc(100% - 38px),420px);grid-template-columns:minmax(0,1fr);grid-template-rows:auto auto auto;gap:18px;padding-top:18px;padding-bottom:32px}.hero-identity{grid-column:1;grid-row:2;align-self:center;justify-self:start;z-index:1;width:max-content;max-width:100%;flex-direction:column;justify-content:flex-start;align-items:flex-start;gap:8px;flex-wrap:nowrap;padding:0;background:transparent}.identity-role{font-size:24px;line-height:1.3}.identity-name{font-size:clamp(26px,7.7vw,30px);line-height:1.3}.hero h1{grid-column:1;grid-row:1;font-size:clamp(32px,8.6vw,48px);line-height:1.42}.hero-portrait{grid-column:1;grid-row:2;justify-self:end;width:68%;height:clamp(240px,66vw,270px);background:transparent}.hero-portrait img{transform:none;object-position:center 8%}.hero-details{display:block;grid-column:1;grid-row:3}.hero-desc{line-height:1.85;align-self:auto}.hero-actions{grid-column:auto;grid-row:auto;margin-top:20px}.hero-actions .button-dark{min-height:60px;padding:17px 18px}.button-dark{min-height:60px;font-size:18px;padding:17px 18px;gap:12px}.experience-grid{grid-template-columns:minmax(0,1fr);gap:32px;padding:65px 0}.experience-stats{gap:25px;margin:28px 0}.experience-stats>div+div{padding-left:25px}.experience-stats strong{font-size:clamp(65px,18vw,90px)}.experience-stats dd span{font-size:20px}.experience-photo{width:100%}.pad-y{padding:var(--space-section-small) 0}.serif-heading{font-size:clamp(31px,7.8vw,42px)}.seminar-grid{display:flex;flex-direction:column;gap:35px;padding:65px 0}.seminar-photo{width:100%}.seminar-photo img{aspect-ratio:3/2}.seminar-copy>p{margin:23px 0}.profile-intro{grid-template-columns:minmax(0,1fr);gap:28px;margin-bottom:35px}.profile-copy>p{margin-top:22px}.running-photo{width:156px}.facts>div{grid-template-columns:minmax(0,1fr);gap:12px;padding:23px 0}.contact-grid{display:block}.contact h2{font-size:clamp(30px,7.7vw,40px)}.contact-links{margin-top:30px}.button-warm{min-height:70px;padding:20px 22px;font-size:20px;max-width:none}.footer{padding:45px 0 calc(80px + env(safe-area-inset-bottom,0px))}.footer-inner{display:block}.footer a{display:inline-block;margin-top:25px}}

@media(max-width:359px){.shell{width:calc(100% - 32px)}.hero-grid{width:calc(100% - 32px);gap:14px}.hero-portrait{width:66%;height:230px}.hero-portrait img{transform:translateX(6px)}.identity-name{font-size:26px;letter-spacing:0}.hero-actions .button-dark{gap:6px;padding-inline:12px}.hero-actions .button-dark>span[aria-hidden="true"]{font-size:20px}.button-warm{font-size:18px;gap:10px;padding-inline:16px}.button-warm span:last-child{font-size:24px}.experience-stats{gap:16px}.experience-stats>div+div{padding-left:16px}.experience-stats dt{font-size:18px}.experience-stats strong{font-size:60px}.experience-stats dd{gap:4px}.experience-stats dd span{font-size:18px}}
@media(max-width:1100px){.yt-b-work__item{grid-template-columns:84px minmax(0,.85fr) minmax(0,1.15fr);gap:28px}.yt-b-work__illustration{width:84px;height:84px}}
@media(max-width:959px){.yt-b-work__item{grid-template-columns:72px minmax(0,1fr);gap:18px 24px;padding:34px 0}.yt-b-work__illustration{width:72px;height:72px;align-self:center}.yt-b-work__title{font-size:28px;align-self:center}.yt-b-work__title>span{display:inline-block}.yt-b-work__body{grid-column:1/-1;max-width:660px}}
@media(max-width:599px){.yt-b-work__heading{margin-bottom:38px}.yt-b-work__item{grid-template-columns:64px minmax(0,1fr);gap:18px;padding:30px 0}.yt-b-work__illustration{width:64px;height:64px}.yt-b-work__title{font-size:26px}.yt-b-work__title>span{display:block}.yt-b-work__body{max-width:none}.yt-b-work__details{margin-top:10px}.yt-b-work__topics{margin-top:18px}}
@media(max-width:359px){.yt-b-work__item{column-gap:16px}.yt-b-work__title{font-size:24px}}
@media(max-width:959px){.yt-b-approach__inner{grid-template-columns:minmax(0,1fr);row-gap:26px;padding-top:80px;padding-bottom:76px}.yt-b-approach__heading{row-gap:18px;font-size:clamp(24px,3.5vw,32px)}.yt-b-approach__phrase+.yt-b-approach__phrase{font-size:clamp(38px,5.4vw,48px)}.yt-b-approach__message{max-width:640px}.yt-b-approach__lead{font-size:26px}.yt-b-approach__lead-unit{display:inline}}
@media(max-width:599px){.yt-b-approach__inner{row-gap:18px;padding-top:68px;padding-bottom:68px}.yt-b-approach__heading{row-gap:14px;font-size:clamp(19px,5.1vw,24px)}.yt-b-approach__phrase+.yt-b-approach__phrase{font-size:clamp(30px,8vw,38px)}.yt-b-approach__message{max-width:none}.yt-b-approach__lead{font-size:22px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}