/* JINSEIKI — original editorial design / 2026 */
:root {
  --paper:#f8f6f0; --paper-deep:#efede4; --white:#fffefa;
  --ink:#27312e; --muted:#626963; --faint:#879089;
  --line:#d7d9d0; --orange:#c86d39; --orange-soft:#f3e1d2;
  --blue:#77b8c4; --blue-soft:#e7f1f0;
  --serif:"Zen Old Mincho","Hiragino Mincho ProN","Yu Mincho", "Noto Serif JP",serif;
  --sans:"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;
  --en:"Cormorant Garamond",Georgia,"Times New Roman",serif;
  --max:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--serif);font-size:16px;line-height:2;letter-spacing:.045em;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}a{color:inherit}a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid var(--blue);outline-offset:4px}
::selection{background:var(--orange-soft);color:var(--ink)}
.skip{position:absolute;z-index:200;left:14px;top:-80px;background:var(--ink);color:#fff;padding:8px 18px;font-family:var(--sans)}.skip:focus{top:12px}
.wrap{width:min(var(--max),calc(100% - 104px));margin:auto}.narrow{max-width:800px;margin-inline:auto}.eyebrow,.micro{font-family:var(--sans);font-size:11px;letter-spacing:.22em;font-weight:600;text-transform:uppercase}.eyebrow{color:var(--orange)}.en{font-family:var(--en);font-weight:500;letter-spacing:.025em}.measure{max-width:38em}.muted{color:var(--muted)}
/* Header */
.site-header{position:sticky;top:0;z-index:100;background:color-mix(in srgb,var(--paper) 94%,transparent);backdrop-filter:blur(16px);border-bottom:1px solid rgba(39,49,46,.10)}
.header-inner{width:min(1400px,calc(100% - 84px));margin:auto;display:flex;align-items:center;justify-content:space-between;min-height:94px;gap:24px}
.brand{display:flex;align-items:center;gap:16px;text-decoration:none;flex-shrink:0}.brand-mark{width:48px;height:53px;background:var(--ink);-webkit-mask:url('../img/mark.png') center/contain no-repeat;mask:url('../img/mark.png') center/contain no-repeat}.brand-type{display:grid;gap:1px;line-height:1.2}.brand-type strong{font-family:var(--serif);font-size:24px;font-weight:600;letter-spacing:.20em;white-space:nowrap}.brand-type small{font-family:var(--en);font-size:12px;letter-spacing:.34em}
.nav{display:flex;align-items:center;gap:25px}.nav a{text-decoration:none;font:500 12px/1.6 var(--sans);letter-spacing:.075em;color:var(--ink);transition:color .2s;white-space:nowrap}.nav a:hover,.nav a[aria-current="page"]{color:var(--orange)}.nav .nav-cta{background:var(--orange);color:#fff;padding:12px 20px;border-radius:3px;transition:background .2s,transform .2s}.nav .nav-cta:hover{color:#fff;background:#a95225;transform:translateY(-1px)}.nav-toggle{display:none;border:1px solid var(--line);background:transparent;color:var(--ink);padding:9px 12px;font:600 12px var(--sans);cursor:pointer}.nav-toggle span{letter-spacing:.1em}
/* Typography */
h1,h2,h3,h4,p{margin-top:0}h1,h2,h3,h4{font-weight:500}.display{font-size:clamp(39px,4.3vw,68px);line-height:1.58;letter-spacing:.10em;font-weight:600;margin:0}.display .accent-underline{background:linear-gradient(transparent 83%,var(--orange-soft) 83%)}.section-title{font-size:clamp(27px,3.25vw,43px);font-weight:600;line-height:1.65;letter-spacing:.09em;margin:16px 0 24px}.section-text{font-size:16px;line-height:2.25;color:var(--muted)}.sub-title{font-size:clamp(22px,2.6vw,32px);line-height:1.72;letter-spacing:.065em;margin-bottom:20px}
.section-head{margin-bottom:50px}.section-head .overline{display:flex;align-items:center;gap:17px}.overline::before{content:"";width:25px;height:2px;background:var(--orange)}
.button-row{display:flex;flex-wrap:wrap;gap:13px;align-items:center}.btn{display:inline-flex;align-items:center;justify-content:center;gap:19px;text-decoration:none;border-radius:3px;padding:14px 23px;min-height:50px;font:600 13px/1.5 var(--sans);letter-spacing:.06em;transition:transform .2s,background .2s,border .2s;cursor:pointer;border:1px solid transparent}.btn:hover{transform:translateY(-2px)}.btn-primary{background:var(--orange);color:white}.btn-primary:hover{background:#aa5626}.btn-outline{background:transparent;border-color:#abb3a9;color:var(--ink)}.btn-outline:hover{border-color:var(--ink)}.btn-light{border-color:rgba(255,255,255,.65);color:#fff}.btn-light:hover{background:rgba(255,255,255,.12)}.btn .arr{font-size:17px;line-height:1}
/* Hero */
.hero{position:relative;overflow:hidden}.hero::before{content:"";position:absolute;left:-160px;top:70px;width:420px;height:420px;border:1px solid rgba(119,184,196,.28);border-radius:50%;pointer-events:none}
.hero-inner{min-height:655px;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:min(7vw,100px);align-items:center;padding:70px 0 88px}.hero-copy{position:relative;z-index:1}.hero-topline{display:flex;align-items:center;gap:15px;margin-bottom:32px;color:var(--muted)}.hero-topline .dot{width:7px;height:7px;background:var(--orange);border-radius:50%}.hero-kicker{font-family:var(--sans);font-weight:500;letter-spacing:.10em;font-size:13px;margin-bottom:25px;color:var(--ink)}.hero-copy .display{margin-bottom:26px}.hero-lead{max-width:535px;color:var(--muted);font-size:16px;line-height:2.2;margin:0 0 26px}.hero-bold{display:block;color:var(--ink);font-size:19px;font-weight:600;margin-bottom:29px}.hero-side{position:relative;min-width:0}.paper-object{padding:18px;background:var(--white);box-shadow:0 32px 72px rgba(39,49,46,.11),0 3px 18px rgba(39,49,46,.04);transform:rotate(1.5deg);position:relative}.paper-object::after{content:"";position:absolute;right:-21px;top:36px;bottom:24px;width:3px;background:var(--blue)}.paper-edge{height:455px;position:relative;border:1px solid #e3e5db;background:#fffefa;overflow:hidden}.paper-edge canvas{display:block;width:100%;height:100%}.paper-tag{position:absolute;top:18px;left:20px;background:rgba(255,254,250,.95);padding:4px 12px;z-index:2;font:500 11px var(--en);letter-spacing:.13em}.paper-caption{display:flex;justify-content:space-between;align-items:center;font:600 10px var(--sans);letter-spacing:.18em;color:var(--muted);padding:17px 4px 2px}.hero-arc{position:absolute;right:-50px;bottom:-52px;border:1px solid var(--orange);width:190px;height:190px;border-radius:50%;pointer-events:none}.hero-scroll{font:500 11px var(--en);letter-spacing:.15em;color:var(--muted);position:absolute;bottom:27px;left:calc((100% - min(var(--max),100% - 104px))/2)}
/* Trust strip */
.trust-strip{background:var(--ink);color:#fff}.trust-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;padding:28px 0}.trust-intro{font:500 12px/1.8 var(--sans);color:#d5e2d9;letter-spacing:.07em}.trust-stats{display:flex;align-items:center;gap:43px}.stat{display:flex;align-items:baseline;gap:10px}.stat b{font:500 42px/1 var(--en);color:#fff}.stat small{font:500 12px var(--sans);color:#d8ded9;letter-spacing:.04em}.trust-sep{width:1px;height:30px;background:rgba(255,255,255,.25)}
/* Sections */
.section{padding:115px 0}.section-tight{padding:84px 0}.section-topline{padding-top:60px}.section.alt{background:var(--white)}.section.blue-tint{background:var(--blue-soft)}.section.soft{background:var(--paper-deep)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(40px,8vw,118px);align-items:center}.split.top{align-items:start}.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.quote-box{background:var(--white);padding:42px 42px 40px;border-left:3px solid var(--orange);box-shadow:0 15px 40px rgba(39,49,46,.045);position:relative}.quote-box::before{content:'“';position:absolute;top:-30px;right:15px;color:var(--blue);font:90px var(--en)}.quote-lines{font-size:clamp(19px,2.3vw,28px);font-weight:500;line-height:2;letter-spacing:.1em}.quote-foot{font:500 11px var(--sans);color:var(--muted);margin:18px 0 0}
.small-list{margin:0;padding:0;list-style:none}.small-list li{border-bottom:1px solid var(--line);padding:14px 0;font-size:16px}.small-list li:first-child{border-top:1px solid var(--line)}.small-list li::before{content:"—";color:var(--orange);margin-right:14px}
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.value{padding:46px 34px 44px;position:relative}.value:not(:last-child){border-right:1px solid var(--line)}.value-no{font:italic 27px var(--en);color:var(--orange)}.value h3{font-size:22px;letter-spacing:.08em;line-height:1.65;margin:15px 0}.value p{font-size:14px;line-height:2.1;color:var(--muted);margin:0}
/* card links */
.path-card{position:relative;display:flex;flex-direction:column;min-height:340px;padding:35px 32px 28px;border:1px solid var(--line);text-decoration:none;background:var(--white);transition:transform .25s,box-shadow .25s,border .25s}.path-card:hover{transform:translateY(-6px);box-shadow:0 22px 45px rgba(39,49,46,.09);border-color:#b4bcae}.path-card:nth-child(2){background:#f4f7f4}.path-card:nth-child(3){background:#f0f2ee}.path-tag{font:italic 25px var(--en);color:var(--orange)}.path-card h3{font-size:24px;line-height:1.7;margin:32px 0 14px}.path-card p{font-size:14px;line-height:2;color:var(--muted);margin:0 0 30px}.path-arrow{margin-top:auto;align-self:flex-end;font:28px var(--en);color:var(--orange)}
/* proof */
.proof{background:var(--ink);color:#f6f7f0;position:relative;overflow:hidden}.proof::after{content:"160+";font:500 clamp(150px,25vw,400px)/1 var(--en);position:absolute;right:-40px;bottom:-90px;opacity:.045;pointer-events:none}.proof-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:86px;align-items:center;position:relative;z-index:1}.proof .eyebrow{color:#f0b38c}.proof .section-title{color:#fff}.proof p{color:#d8e0db}.proof .mini-label{font:500 11px var(--sans);letter-spacing:.16em;color:#b3c2b7}.proof-big{font:500 clamp(108px,14vw,185px)/.9 var(--en);letter-spacing:-.045em}.proof-big em{font:500 clamp(30px,4vw,47px) var(--en);letter-spacing:.05em;color:var(--blue)}.proof-caption{font:500 12px var(--sans);color:#d8e0db;letter-spacing:.16em;margin:19px 0 0}.proof-fields{display:flex;flex-wrap:wrap;gap:9px;margin:28px 0}.proof-fields span{padding:5px 12px;border:1px solid #5a6b60;font:500 11px var(--sans);color:#deebe2}
/* artwork: book-shaped motif */
.book-graphic{min-height:385px;background:linear-gradient(145deg,#e8f0ed,#f5f3eb);display:grid;place-items:center;position:relative;overflow:hidden}.book-graphic::after{content:"";position:absolute;width:290px;height:290px;border-radius:50%;border:1px solid var(--blue);right:-70px;top:-80px}.book-stack{width:53%;height:62%;position:relative;border:1px solid #b4bdb2;background:#fffefa;box-shadow:17px 17px 0 -2px #d6dfd8,17px 17px 0 -1px #9eaaa1,36px 36px 0 -3px #e5dad0,36px 36px 0 -2px #b8b6ac;transform:rotate(-6deg);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:25px}.book-stack .book-mark{width:68px;height:75px;background:var(--ink);-webkit-mask:url('../img/mark.png') center/contain no-repeat;mask:url('../img/mark.png') center/contain no-repeat}.book-stack .book-name{font:600 24px var(--serif);letter-spacing:.23em;margin-top:15px}.book-stack .book-label{font:500 10px var(--en);letter-spacing:.2em}
/* content devices */
.note-band{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:27px 0;display:flex;align-items:center;gap:30px}.note-band strong{font-size:19px}.note-band p{color:var(--muted);margin:0}.note-band .mark{width:42px;height:47px;flex-shrink:0;background:var(--orange);-webkit-mask:url('../img/mark.png') center/contain no-repeat;mask:url('../img/mark.png') center/contain no-repeat}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.step{border-top:2px solid var(--line);padding:24px 12px 16px 0}.step b{font:italic 36px var(--en);color:var(--orange)}.step h3{font-size:19px;margin:9px 0}.step p{font-size:14px;color:var(--muted)}
.card{background:var(--white);padding:33px 31px;border:1px solid var(--line)}.card h3{font-size:20px;margin-bottom:12px}.card p{font-size:14px;line-height:2.1;color:var(--muted);margin-bottom:0}.card .card-tag{display:block;font:500 11px var(--sans);color:var(--orange);letter-spacing:.17em;margin-bottom:18px}.card.sky{background:#f2f7f6}
/* inner page */
.page-hero{position:relative;padding:100px 0 92px;overflow:hidden;background:var(--white);border-bottom:1px solid var(--line)}.page-hero:after{content:"";position:absolute;width:400px;height:400px;border:1px solid rgba(119,184,196,.45);border-radius:50%;right:-145px;top:-185px}.page-hero .wrap{position:relative;z-index:1}.breadcrumb{font:500 11px var(--sans);color:var(--muted);letter-spacing:.08em;margin-bottom:34px}.breadcrumb a{text-decoration:none;border-bottom:1px solid #bac1b8}.page-hero h1{font-size:clamp(36px,5vw,62px);line-height:1.58;font-weight:600;letter-spacing:.09em;margin:20px 0 25px}.page-hero .lede{max-width:660px;font-size:17px;line-height:2.25;color:var(--muted);margin:0}.page-hero .page-en{position:absolute;bottom:-105px;right:0;font:italic 115px var(--en);opacity:.055;pointer-events:none}
.numbered-list{list-style:none;margin:0;padding:0}.numbered-list li{display:grid;grid-template-columns:72px 1fr;gap:30px;border-top:1px solid var(--line);padding:32px 0}.numbered-list li:last-child{border-bottom:1px solid var(--line)}.numbered-list .num{font:italic 42px var(--en);color:var(--orange)}.numbered-list h3{font-size:22px;margin:0 0 10px}.numbered-list p{font-size:15px;color:var(--muted);margin:0;max-width:46em}
.purpose{padding:28px 30px;background:var(--blue-soft);border-left:3px solid var(--blue)}.purpose p{margin:0}.accent-text{color:var(--orange)}
/* Works: honest preview */
.case-placeholder{display:grid;grid-template-columns:220px 1fr;gap:40px;align-items:center;border-bottom:1px solid var(--line);padding:39px 0}.case-cover{aspect-ratio:3/4;background:#ebece6;position:relative;display:grid;place-items:center;overflow:hidden}.case-cover::before{content:"";width:80%;height:80%;border:1px solid #b7c0b6}.case-cover::after{content:"制作事例";position:absolute;font:600 16px var(--serif);letter-spacing:.24em;color:#6a746b}.case-placeholder:nth-child(2) .case-cover{background:#e8f0ee}.case-placeholder:nth-child(3) .case-cover{background:#f2e8dd}.case-placeholder h3{font-size:24px}.case-placeholder p{color:var(--muted);font-size:14px}.status-label{font:500 11px var(--sans);letter-spacing:.1em;color:var(--orange);background:var(--orange-soft);padding:7px 12px;display:inline-block;margin-bottom:15px}
/* FAQ */
.faq{border-top:1px solid var(--line)}.faq details{border-bottom:1px solid var(--line);padding:0 4px}.faq summary{padding:24px 36px 24px 2px;cursor:pointer;list-style:none;position:relative;font-size:17px;font-weight:600}.faq summary::-webkit-details-marker{display:none}.faq summary::after{content:'+';position:absolute;right:5px;top:18px;font:29px var(--en);color:var(--orange)}.faq details[open] summary::after{content:'−'}.faq .answer{padding:0 0 26px;color:var(--muted);font-size:15px;max-width:60em}
/* Contact */
.contact-prompt{background:var(--blue-soft);padding:32px 34px;border-left:4px solid var(--blue)}.contact-prompt strong{display:block;font-size:19px;margin-bottom:8px}.contact-prompt p{margin:0;font-size:14px;color:var(--muted)}
.contact-grid{display:grid;grid-template-columns:1.13fr .87fr;gap:75px;align-items:start}.form-label{display:block;font:600 12px var(--sans);letter-spacing:.08em;margin:0 0 9px}.form-row{margin-bottom:23px}.form-row input,.form-row select,.form-row textarea{width:100%;padding:14px 15px;border:1px solid #bcc4bb;background:#fff;color:var(--ink);font:15px/1.7 var(--sans);border-radius:2px}.form-row textarea{min-height:180px;resize:vertical}.form-hint{font:13px/1.75 var(--sans);color:var(--muted)}.contact-fallback{background:#fff;padding:30px;border:1px solid var(--line)}.contact-fallback a{overflow-wrap:anywhere}.contact-fallback h3{font-size:21px}.contact-fallback dl{margin:0}.contact-fallback dt{font:600 11px var(--sans);color:var(--muted);margin-top:18px}.contact-fallback dd{font-size:16px;margin:5px 0 0}.message-preview{background:#fff;padding:16px 19px;border-left:3px solid var(--orange);font:14px/1.75 var(--sans);white-space:pre-wrap;overflow-wrap:anywhere;max-height:240px;overflow:auto}.form-status{min-height:28px;font:14px var(--sans);color:var(--muted)}
/* End CTA */
.end-cta{position:relative;overflow:hidden;background:var(--ink);color:var(--white);text-align:center;padding:96px 24px}.end-cta::before,.end-cta::after{content:"";position:absolute;width:280px;height:280px;border-radius:50%;border:1px solid rgba(119,184,196,.3)}.end-cta::before{left:-120px;top:-140px}.end-cta::after{right:-80px;bottom:-185px;border-color:rgba(200,109,57,.5)}.end-cta .eyebrow{color:#f3af80}.end-cta h2{font-size:clamp(28px,3.5vw,46px);line-height:1.65;margin:14px 0 20px}.end-cta p{color:#d2ddd5;max-width:590px;margin:0 auto 30px;font-size:15px}.end-cta .btn{position:relative;z-index:1}
/* Footer */
.footer{background:#e8ebe4;padding:62px 0 26px}.footer-top{display:flex;justify-content:space-between;gap:40px;align-items:start;border-bottom:1px solid #cbd2c8;padding-bottom:47px}.footer .brand-mark{width:42px;height:44px}.footer .brand-type strong{font-size:21px}.footer-address{font:13px/2.15 var(--sans);color:#626b63;margin-top:19px}.footer-nav{display:grid;grid-template-columns:repeat(2,1fr);gap:10px 38px}.footer-nav a{font:500 12px/1.7 var(--sans);text-decoration:none}.footer-nav a:hover{color:var(--orange)}.footer-bottom{display:flex;justify-content:space-between;align-items:center;font:11px var(--sans);color:#6d796f;padding-top:22px}
/* Responsive */
@media(max-width:1120px){.header-inner{width:calc(100% - 52px)}.nav{gap:16px}.nav a{font-size:11px}.wrap{width:calc(100% - 84px)}.hero-inner{gap:43px}.paper-edge{height:410px}.hero-scroll{left:42px}}
@media(max-width:880px){.header-inner{min-height:78px}.brand-mark{width:39px;height:45px}.brand-type strong{font-size:20px}.nav-toggle{display:block}.nav{display:none;position:absolute;top:calc(100% + 1px);left:0;right:0;background:var(--paper);padding:18px 26px 26px;box-shadow:0 22px 28px rgba(0,0,0,.12);flex-direction:column;align-items:stretch;gap:0}.nav.is-open{display:flex}.nav a{font-size:14px;padding:14px 8px;border-bottom:1px solid var(--line)}.nav .nav-cta{text-align:center;margin-top:18px;padding:14px}.hero-inner{grid-template-columns:1fr;max-width:760px;padding:66px 0 90px;gap:43px}.hero-copy{max-width:700px}.hero-side{width:min(440px,100%);justify-self:center}.hero-scroll{display:none}.split,.proof-grid,.contact-grid{grid-template-columns:1fr;gap:48px}.proof-grid{gap:15px}.value{padding:37px 20px}.page-hero{padding:73px 0}.section{padding:88px 0}.section-tight{padding:65px 0}}
@media(max-width:640px){body{font-size:15px}.wrap{width:calc(100% - 40px)}.header-inner{width:calc(100% - 36px)}.brand{gap:10px}.brand-mark{width:33px;height:39px}.brand-type strong{font-size:18px}.brand-type small{font-size:10px}.hero-inner{padding:54px 0 77px}.hero-copy .display{font-size:clamp(34px,8.4vw,52px);line-height:1.55;letter-spacing:.055em}.hero-lead{font-size:15px}.hero-kicker{font-size:12px}.hero-topline{margin-bottom:22px}.paper-edge{height:355px}.paper-object{padding:12px}.paper-object::after{right:-10px}.hero-arc{right:-25px}.trust-inner{flex-wrap:wrap;gap:19px;padding:24px 0}.trust-intro{width:100%}.trust-stats{gap:22px}.stat b{font-size:38px}.stat small{font-size:11px}.section{padding:72px 0}.section-tight{padding:52px 0}.section-title{font-size:clamp(26px,7vw,36px)}.grid3,.grid2,.value-grid,.steps{grid-template-columns:1fr}.value:not(:last-child){border-right:0;border-bottom:1px solid var(--line)}.value{padding:27px 10px}.path-card{min-height:270px;padding:26px}.path-card h3{margin:16px 0 9px;font-size:22px}.quote-box{padding:32px 25px}.note-band{align-items:flex-start;gap:18px}.page-hero{padding:54px 0 60px}.page-hero h1{font-size:clamp(32px,8vw,43px)}.page-hero .lede{font-size:15px}.page-hero .page-en{font-size:65px;bottom:-75px}.numbered-list li{grid-template-columns:42px 1fr;gap:14px;padding:26px 0}.numbered-list .num{font-size:31px}.numbered-list h3{font-size:20px}.book-graphic{min-height:300px}.proof-big{font-size:110px}.case-placeholder{grid-template-columns:105px 1fr;gap:22px}.case-placeholder h3{font-size:18px}.status-label{font-size:9px}.contact-grid{gap:40px}.contact-fallback{padding:22px}.footer-top,.footer-bottom{flex-direction:column;gap:24px}.footer-nav{gap:14px 26px}.end-cta{padding:72px 20px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}
/* Keep the core brand promise together on a single line on desktop. */
.hero-copy .display{font-size:clamp(38px,3.5vw,55px);letter-spacing:.052em}
.hero-copy .display .accent-underline{white-space:nowrap}
@media(max-width:640px){.hero-copy .display{font-size:clamp(27px,7.2vw,46px);letter-spacing:.04em}}

/* Supplied corporate logo in site header */
.site-header .brand-logo{display:block;width:225px;max-width:100%;height:72px;object-fit:contain;object-position:left center}
@media(max-width:880px){.site-header .brand-logo{width:184px;height:65px}}
@media(max-width:640px){.site-header .brand-logo{width:155px;height:60px}}