/* 日本語を文節の切れ目で改行する。Chrome以外では無視されるだけなので安全 */
body { word-break: auto-phrase; }

:root { --ink:#173b3d; --deep:#0f3032; --sea:#397b7c; --foam:#dcebea; --sand:#ece2cc; --paper:#f6f2e9; --sun:#d8a45f; --white:#fff; --line:rgba(23,59,61,.19); }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; overflow-x: hidden; background: var(--paper); color: var(--ink); font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif; font-size: 18px; line-height: 1.9; }
img { display: block; max-width: 100%; }
a { color: inherit; }
main > section { scroll-margin-top: 100px; }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 200; padding: 10px 16px; background: var(--deep); color: white; transform: translateY(-150%); }
.skip-link:focus { transform: none; }
.icon { width: 1.3em; height: 1.3em; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.site-header { position: fixed; inset: 0 0 auto; z-index: 100; color: white; background: rgba(15,48,50,.72); box-shadow: 0 5px 24px rgba(0,0,0,.08); backdrop-filter: blur(10px); transition: background .25s, box-shadow .25s; }
.site-header.is-scrolled { background: rgba(15,48,50,.96); box-shadow: 0 8px 28px rgba(0,0,0,.15); backdrop-filter: blur(12px); }
.site-header::after { content: ""; position: absolute; left: 3vw; right: 3vw; bottom: 0; height: 1px; background: rgba(255,255,255,.45); }
.header-inner { min-height: 100px; display: flex; align-items: center; justify-content: space-between; gap: 40px; width: min(1480px, calc(100% - 6vw)); margin-inline: auto; }
.brand { display: flex; align-items: center; gap: 11px; color: white; line-height: 1; text-decoration: none; }
.brand-symbol { width: 54px; height: 54px; fill: none; stroke: currentColor; stroke-width: 3; stroke-linecap: round; }
.brand-sun { fill: var(--sun); stroke: none; }
.brand-copy { display: grid; gap: 5px; }
.brand strong { font-family: Georgia, "Yu Mincho", serif; font-size: 29px; font-style: italic; font-weight: 500; }
.brand small { font-size: 10px; font-weight: 700; letter-spacing: .28em; text-transform: uppercase; }
.global-nav { display: flex; align-items: center; gap: 28px; font-size: 14px; font-weight: 700; }
.global-nav a { position: relative; padding-block: 10px; text-decoration: none; }
.global-nav a:not(.nav-contact)::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 3px; height: 1px; background: currentColor; transition: right .2s; }
.global-nav a:hover::after, .global-nav a:focus-visible::after { right: 0; }
.nav-contact { padding: 11px 22px !important; border: 1px solid rgba(255,255,255,.8); border-radius: 999px; transition: background .2s, color .2s; }
.nav-contact:hover, .nav-contact:focus-visible { background: white; color: var(--deep); }
.menu-button { display: none; padding: 10px; border: 1px solid rgba(255,255,255,.7); border-radius: 50%; background: rgba(15,48,50,.15); color: white; }
.icon-close { display: none; }
.hero { position: relative; min-height: 100svh; overflow: hidden; background: var(--deep); color: white; }
.hero-image, .hero-overlay { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-image { object-fit: cover; object-position: center 52%; transform: scale(1.015); }
.hero-overlay { background: linear-gradient(90deg, rgba(9,30,31,.72) 0%, rgba(9,30,31,.25) 56%, rgba(9,30,31,.08)), linear-gradient(0deg, rgba(9,30,31,.58), transparent 45%); }
.hero-copy { position: absolute; z-index: 2; top: 145px; left: clamp(28px, 8vw, 130px); }
.hero-area { margin: 0 0 26px; font-family: Georgia, serif; font-size: 14px; letter-spacing: .18em; text-transform: uppercase; }
.hero-message { display: flex; gap: 10px; writing-mode: vertical-rl; font-family: "Yu Mincho", serif; font-size: clamp(22px, 2vw, 31px); letter-spacing: .12em; }
.hero-message span { padding: 11px 7px; background: rgba(246,242,233,.94); color: var(--deep); }
.hero h1 { position: absolute; top: 150px; left: clamp(170px, 17vw, 260px); width: min(560px, 44vw); margin: 0; font-size: clamp(27px, 3vw, 44px); line-height: 1.6; letter-spacing: .05em; text-shadow: 0 3px 20px rgba(0,0,0,.3); }
.hero-english { position: absolute; z-index: 2; right: 3vw; bottom: -1vw; margin: 0; font-family: Georgia, serif; font-size: clamp(58px, 8.2vw, 138px); line-height: .9; letter-spacing: -.045em; white-space: nowrap; opacity: .9; }
.scroll-link { position: absolute; z-index: 3; right: 30px; top: 50%; display: flex; align-items: center; gap: 12px; color: white; font-family: Georgia, serif; font-size: 12px; letter-spacing: .16em; text-decoration: none; writing-mode: vertical-rl; }
.scroll-line { width: 1px; height: 74px; background: rgba(255,255,255,.8); }
.overline { margin: 0 0 22px; color: var(--sea); font-family: Georgia, serif; font-size: 14px; letter-spacing: .18em; text-transform: uppercase; }
.concept { display: grid; grid-template-columns: 1.05fr .95fr; min-height: 900px; background: var(--paper); }
.concept > *, .contact > * { min-width: 0; }
.concept-intro { align-self: center; padding: 120px clamp(40px, 8vw, 140px); }
.concept h2, .service h2, .flow h2, .contact h2 { margin: 0; color: var(--deep); font-family: "Yu Mincho", "Hiragino Mincho ProN", serif; font-size: clamp(42px, 5vw, 76px); font-weight: 500; line-height: 1.45; letter-spacing: .03em; }
.concept-lead { max-width: 720px; margin: 50px 0 28px; font-size: 23px; font-weight: 700; line-height: 1.9; }
.concept-body { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; max-width: 780px; color: #456163; font-size: 16px; }
.concept-visual { position: relative; margin: 0; min-height: 760px; overflow: hidden; }
.concept-visual img { width: 100%; height: 100%; object-fit: cover; }
.concept-visual figcaption { position: absolute; right: 18px; bottom: 20px; color: white; font-family: Georgia, serif; font-size: 13px; letter-spacing: .12em; writing-mode: vertical-rl; }
.service { padding: 150px 0 130px; background: var(--deep); color: white; }
.service-heading { width: min(1120px, calc(100% - 48px)); margin: 0 auto 110px; }
.service-heading .overline { color: #9ec4c2; }
.service-heading h2 { color: white; }
.service-heading > p:last-child { max-width: 620px; margin: 38px 0 0 auto; color: #d4e0dc; }
.story { position: relative; width: min(1380px, 92%); margin-bottom: 170px; }
.story img { width: 70%; height: min(74vw, 760px); max-height: 760px; object-fit: cover; }
.story-one { margin-left: 0; }
.story-one img { object-position: center 48%; }
.story-two { margin-left: auto; }
.story-two img { margin-left: auto; object-position: center 60%; }
.story-card { position: absolute; z-index: 2; width: min(520px, 43%); padding: 46px 50px; background: var(--paper); color: var(--ink); box-shadow: 0 30px 80px rgba(0,0,0,.22); }
.story-one .story-card { right: 4%; bottom: -52px; }
.story-two .story-card { left: 4%; top: 12%; }
.story-number { display: block; margin-bottom: 18px; color: var(--sea); font-family: Georgia, serif; letter-spacing: .15em; text-transform: uppercase; }
.story-card h3 { margin: 0 0 22px; color: var(--deep); font-family: "Yu Mincho", serif; font-size: clamp(30px, 3.2vw, 49px); font-weight: 500; line-height: 1.5; }
.story-card p { margin: 0; color: #486466; font-size: 16px; }
.service-points { display: grid; grid-template-columns: repeat(3, 1fr); width: min(1120px, calc(100% - 48px)); margin: 0 auto; border-top: 1px solid rgba(255,255,255,.3); }
.service-points article { padding: 44px 34px; border-right: 1px solid rgba(255,255,255,.2); }
.service-points article:last-child { border-right: 0; }
.service-points span { font-family: Georgia, serif; color: #98c2bf; }
.service-points h3 { margin: 24px 0 12px; font-family: "Yu Mincho", serif; font-size: 26px; font-weight: 500; }
.service-points p { margin: 0; color: #cbd9d6; font-size: 15px; }
.temporary-note { width: min(1052px, calc(100% - 48px)); margin: 36px auto 0; color: #9fb4b0; font-size: 13px; }
.flow { display: grid; grid-template-columns: .85fr 1.15fr; gap: 9vw; padding: 140px max(6vw, 32px); background: var(--sand); }
.flow-heading { position: sticky; top: 140px; align-self: start; }
.flow-heading h2 { font-size: clamp(38px, 4.3vw, 66px); }
.flow-list { margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.flow-list li { display: grid; grid-template-columns: 80px 1fr; gap: 26px; padding: 38px 0; border-bottom: 1px solid var(--line); }
.flow-list > li > span { color: var(--sea); font-family: Georgia, serif; font-size: 20px; }
.flow-list h3 { margin: 0 0 10px; font-family: "Yu Mincho", serif; font-size: 28px; font-weight: 500; }
.flow-list p { margin: 0; color: #526b6c; font-size: 16px; }
.contact { display: grid; grid-template-columns: 1fr 1fr; min-height: 900px; background: var(--paper); }
.contact-visual { min-height: 700px; }
.contact-visual img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.contact-panel { align-self: center; padding: 100px clamp(38px, 7vw, 120px); }
.contact-panel h2 { font-size: clamp(40px, 4vw, 64px); }
.contact-lead { margin: 35px 0; color: #4c6869; }
.contact-actions { display: grid; gap: 10px; }
.contact-button { min-height: 64px; display: flex; align-items: center; justify-content: space-between; padding: 12px 22px; border-bottom: 1px solid var(--ink); text-decoration: none; font-weight: 700; transition: padding .2s, color .2s; }
.contact-button:hover, .contact-button:focus-visible { padding-left: 30px; color: var(--sea); }
.faq-list { margin-top: 50px; border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { position: relative; padding: 20px 42px 20px 0; color: var(--deep); font-weight: 700; cursor: pointer; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 5px; top: 15px; font-size: 26px; font-weight: 400; }
details[open] summary::after { content: "−"; }
details p { padding: 0 30px 18px 0; color: #526b6c; font-size: 15px; }
.site-footer { display: grid; grid-template-columns: 1fr auto; gap: 12px 40px; align-items: end; padding: 70px 6vw 28px; background: var(--deep); color: white; }
.footer-brand { display: flex; align-items: baseline; gap: 14px; }
.footer-brand strong { font-family: Georgia, serif; font-size: 43px; font-style: italic; font-weight: 500; }
.footer-brand span { font-size: 11px; letter-spacing: .25em; text-transform: uppercase; }
.site-footer p { margin: 0; color: #b5c8c5; font-size: 14px; }
.site-footer a { grid-column: 2; grid-row: 1 / span 2; align-self: center; font-family: Georgia, serif; letter-spacing: .1em; }
.site-footer small { grid-column: 1 / -1; margin-top: 38px; color: #829c99; }
.notice { position: fixed; right: 20px; bottom: 20px; z-index: 150; max-width: 380px; padding: 16px 20px; border-radius: 4px; background: var(--deep); color: white; box-shadow: 0 14px 36px rgba(0,0,0,.2); font-size: 15px; }
:focus-visible { outline: 3px solid var(--sun); outline-offset: 4px; }
@media (max-width: 1000px) { .concept { grid-template-columns: 1fr; } .concept-visual { min-height: 680px; } .story img { width: 78%; } .story-card { width: min(500px, 51%); } .flow { grid-template-columns: 1fr; } .flow-heading { position: static; } .contact { grid-template-columns: 1fr; } .contact-visual { min-height: 560px; } }
@media (max-width: 760px) { body { font-size: 17px; } .site-header { position: fixed; } .site-header.is-scrolled { background: rgba(15,48,50,.96); } .header-inner { min-height: 78px; width: calc(100% - 32px); } .brand-symbol { width: 44px; height: 44px; } .brand strong { font-size: 23px; } .brand small { font-size: 8px; } .menu-button { display: grid; } .menu-button[aria-expanded="true"] .icon-menu { display: none; } .menu-button[aria-expanded="true"] .icon-close { display: block; } .global-nav { position: absolute; top: 78px; left: 16px; right: 16px; display: none; gap: 3px; padding: 14px; border-radius: 0 0 10px 10px; background: rgba(15,48,50,.97); box-shadow: 0 20px 35px rgba(0,0,0,.2); } .global-nav.is-open { display: grid; } .global-nav a { padding: 12px 14px; } .nav-contact { margin-top: 6px; text-align: center; } .hero { min-height: 780px; } .hero-image { object-position: 53% center; } .hero-copy { top: 125px; left: 20px; right: 20px; } .hero-area { margin-bottom: 18px; } .hero-message { font-size: 19px; } .hero h1 { position: absolute; top: 380px; left: 0; width: min(340px, 90vw); margin: 0; font-size: 25px; } .hero-english { right: auto; left: 18px; bottom: 24px; max-width: 350px; font-size: 42px; white-space: normal; } .scroll-link { display: none; } .concept-intro { width: 100%; padding: 90px 24px; } .concept h2, .service h2, .flow h2, .contact h2 { font-size: 39px; } .concept-lead { margin-top: 34px; font-size: 20px; } .concept-body { grid-template-columns: 1fr; gap: 4px; } .concept-visual { width: 100%; min-height: 580px; } .service { padding: 100px 0 80px; } .service-heading { margin-bottom: 70px; } .story { width: 100%; margin-bottom: 100px; } .story img { width: 88%; height: 550px; } .story-two img { margin-left: auto; } .story-card { position: relative; width: calc(100% - 36px); margin: -70px 18px 0; padding: 32px 25px; } .story-one .story-card, .story-two .story-card { inset: auto; } .story-card h3 { font-size: 32px; } .service-points { grid-template-columns: 1fr; } .service-points article { padding: 32px 4px; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.2); } .flow { gap: 60px; padding: 90px 24px; } .flow-list li { grid-template-columns: 54px 1fr; gap: 14px; } .contact-visual { width: 100%; min-height: 430px; } .contact-panel { width: 100%; padding: 80px 24px; } .site-footer { grid-template-columns: 1fr; } .site-footer a { grid-column: 1; grid-row: auto; margin-top: 24px; } .footer-brand strong { font-size: 35px; } .notice { left: 16px; right: 16px; bottom: 16px; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; } }