/* common.css: 全ページ共通スタイル */
:root{
  --c-bg:#ffffff; --c-text:#222; --c-muted:#666; --c-primary:#0aa1dd; --c-accent:#f46b00; --c-green:#0a9d62; --c-red:#e64646;
  --container: 1120px; --radius: 12px; --shadow: 0 10px 30px rgba(0,0,0,.08);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:"Noto Sans JP", system-ui, -apple-system, Segoe UI, Roboto, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  color:var(--c-text);background:var(--c-bg);line-height:1.7;
}
img{max-width:100%;height:auto;display:block}
.container{max-width:var(--container);margin:0 auto;padding:0 20px}
.site-header .container{max-width:100%;margin:0}

/* Header */
.site-header{position:sticky;top:0;background:#fff;border-bottom:0px solid #eee;z-index:50;padding:25px 0}
.header__inner{display:flex;align-items:center;gap:16px;min-height:90px;justify-content:flex-start}
.site-header .container{max-width:none;padding-left:30px;padding-right:0}
.logo{display:inline-flex;align-items:center;height:90px;flex:0 0 auto}
.logo img{display:block;height:52px;width:auto}
.global-nav{flex:1 1 auto;align-self:stretch}
.nav-toggle{display:none}
.nav__list{display:flex;align-items:stretch;list-style:none;margin:0;padding:0;flex:1;width:100%}
.nav__item{display:flex}
.nav__item a{display:flex;align-items:center;justify-content:center;width:clamp(150px, 13vw, 250px);height:90px;text-align:center;padding:0 8px;text-decoration:none;color:#333;font-weight:600;font-size:16px;position:relative;overflow:hidden;transition:background-color .3s ease,color .3s ease}
.nav__item a::after{content:"";position:absolute;left:24px;right:24px;bottom:14px;height:3px;background:#ffffff;transform:scaleX(0);transform-origin:center;transition:transform .28s ease;border-radius:2px;opacity:.9}
.nav__item a:hover::after,.nav__item a:focus-visible::after{transform:scaleX(1)}
.nav__item a:focus-visible{outline:2px solid rgba(0,157,158,.35);outline-offset:3px}
.nav__item + .nav__item a{border-left:1px solid #b0b0b0}
.nav__item:first-child a{border-left:1px solid #b0b0b0}
.nav__item a:hover{background:#f46b00;color:#fff}
.nav__list{justify-content:flex-end}
.nav__item--contact{margin-left:0}
.site-header{padding-right:0}

@media (max-width: 992px){
  .nav__item a{font-size:15px}
}
@media (max-width: 860px){
  .global-nav{display:flex;align-items:center;justify-content:flex-end;padding-right:30px}
  .nav-toggle{display:flex;flex-direction:column;justify-content:space-around;width:32px;height:28px;background:transparent;border:none;cursor:pointer;padding:0;z-index:60;position:relative}
  .nav-toggle__line{width:100%;height:3px;background:#333;border-radius:2px;transition:all .3s ease;transform-origin:center}
  .nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
  .nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(2){opacity:0}
  .nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(3){transform:translateY(-12.5px) rotate(-45deg)}
  .nav__list{position:absolute;inset:140px 0 auto 0;background:#fff;flex-direction:column;padding:0;border-bottom:1px solid #eee;display:none;box-shadow:0 4px 8px rgba(0,0,0,.1)}
  .nav__list.is-open{display:flex}
  .nav__item{width:100%}
  .nav__item a{width:100%;height:56px;border-left:none;border-top:1px solid #b0b0b0}
  .nav__item a::after{display:none}
  .nav__item a:hover::after{display:none}
  .nav__item--contact{margin-left:0}
}

/* Footer */
.site-footer{background:#009d9e;color:#fff;padding:40px 0 90px;margin-top:200px;position:relative}
.site-footer .container{max-width:630px}
.footer__top{display:grid;grid-template-columns:auto 1fr;gap:40px;align-items:center;margin-bottom:40px}
.footer__logo img{display:block;height:60px;width:auto}
.footer__org p{margin:0;font-size:16px;line-height:1.8; text-align: center;}

.footer__contact-banner{display:flex;justify-content:center;margin-bottom:40px}
.contact-banner{position:relative;display:inline-block;text-decoration:none}
.contact-banner__shadow{position:absolute;top:8px;left:8px;width:630px;height:60px;background:#fff;z-index:1}
.contact-banner__main{position:relative;display:flex;align-items:center;justify-content:center;width:630px;height:60px;background:#ee5a24;color:#fff;font-size:20px;font-weight:700;z-index:2;transition:transform .2s ease}
.contact-banner:hover .contact-banner__main{transform:translate(4px,4px)}

.footer__links{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px}
.footer__col h4{margin:0;font-size:14px;font-weight:700;color:#fff}
.footer__col ul{list-style:none;margin:0;padding:0}
.footer__col ul li{margin-bottom:0px}
.footer__col a{color:#e0f5f5;text-decoration:none;font-size:15px}
.footer__col a:hover{color:#fff;text-decoration:underline}

@media (max-width: 860px){
  .footer__top{grid-template-columns:1fr;gap:20px;text-align:center}
  .footer__logo img{margin:0 auto}
  .contact-banner__shadow,.contact-banner__main{width:90vw;max-width:630px}
  .footer__links{grid-template-columns:1fr;gap:24px}
}

@media (max-width: 600px){
  .contact-banner__main{font-size:18px}
  .footer__org-info{font-size:13px}
  .footer__col h4{font-size:13px}
  .footer__col a{font-size:14px}
}

/* Common sections */
.section{padding:64px 0}
.section__title{color: #009d9e;font-size: 27px;text-align: center;font-weight: 700;margin: 0 0 32px 0;line-height: 1.1;letter-spacing: 0.02em}

.lead{font-size:18px;color:var(--c-muted)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;height:40px;padding:0 16px;border-radius:8px;text-decoration:none;font-weight:700}
.btn--accent{background:var(--c-accent);color:#fff}
.btn--primary{background:var(--c-primary);color:#fff}

/* Hero */
.hero{position:relative;min-height:auto;display:block;overflow:visible;--center-width:min(100vw,1290px);--ghost-width:max(0px, calc((100vw - var(--center-width)) / 2))}
.hero .hero__slides,.hero .layout__image,.hero [data-bg]{position:absolute;inset:0;background-size:cover;background-position:center}
.hero .hero__nav{position:absolute;top:50%;transform:translateY(-50%);background:rgba(255,255,255,.7);border:none;border-radius:50%;width:44px;height:44px;font-size:20px}
.hero .hero__nav--prev{left:12px}
.hero .hero__nav--next{right:12px}

/* Page hero (seminar/project/community) */
.hero--seminar,
.hero--project,
.hero--community{height:285px;display:flex;align-items:center;justify-content:center;background-size:cover;background-position:center;position:relative}
.hero--seminar h1,
.hero--project h1,
.hero--community h1{margin:0;font-size:42px;font-weight:700;color:#fff;text-align:center;text-shadow:0 2px 8px rgba(0,0,0,.3);letter-spacing:0.05em}

@media (max-width: 768px){
  .hero--seminar,
  .hero--project,
  .hero--community{height:200px}
  .hero--seminar h1,
  .hero--project h1,
  .hero--community h1{font-size:28px;padding:0 20px}
}

body.is-modal-open{overflow:hidden}

/* Layouts */
.layout{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.layout__image{overflow:hidden;display:flex;flex-direction:column;gap:16px;justify-content:flex-start;align-items:flex-end}
.layout__image img{display:block;width:auto;max-width:100%;height:auto;box-shadow:0 4px 12px rgba(0,0,0,.08)}
.layout__image.has-multiple{display:flex;flex-direction:column;gap:16px}
.layout__body{padding:0}
.layout__body h2{text-align:center;color:#009d9e;font-size:27px;font-weight:700;margin:0 0 24px 0;line-height:1.3}
.layout__body h2 small{display:block;font-size:20px;margin-top:8px;font-weight:600}
.layout__body h3{color:#ee5a24;font-weight:700;margin:0 0 12px 0}
.layout__body p{margin:0 0 16px 0;line-height:1.8;color:#444}
.layout__body .bullets{background:#fff7e4;padding:20px 20px 20px 40px;border-radius:8px;margin:16px 0}
.layout__body .bullets li{margin-bottom:8px;line-height:1.6;color:#333; list-style: none;}

/* Multiple layouts in one section (project page bottom section only) */
.section--triplet .container > .layout + .layout{margin-top:32px}
.section--triplet .layout__body{display:flex;flex-direction:column;justify-content:center;text-align:left}

@media (max-width: 860px){
  .layout{grid-template-columns:1fr;gap:16px}
  .layout__image{align-items:center}
  .layout__body h2{font-size:24px}
  .layout__body h2 small{font-size:18px}
}

@media (max-width: 600px){
  .layout{gap:24px}
  .layout__body h2{font-size:22px}
  .layout__body .bullets{padding:16px 16px 16px 32px}
}

/* News */
.news__slider{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.news__card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.news__thumb{height:160px;background:#eaf6ff;background-size:cover;background-position:center}
.news__title{font-size:16px;margin:12px}
.news__date{color:#777;margin:0 12px 12px;display:block}

/* Values */
.values__list{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:0;padding:0 0 0 20px}
@media (max-width: 860px){.values__list{grid-template-columns:repeat(2,1fr)}}

/* Activities */
.activity-link{display:block;text-decoration:none;color:inherit}
.activity{display:grid;grid-template-columns:1fr 1fr;;margin-bottom:24px;transition:transform .25s ease, box-shadow .25s ease}
.activity__media{min-height:165px;background:#eef6f8;background-size:cover;background-position:center;background-repeat:no-repeat}
.activity__body{padding: 0 30px; display:flex; flex-direction:column; justify-content:center; min-height:240px}
.activity__title{margin:8px 0; font-size: 27px; line-height: 130%;}
.activity__bullets{margin:0;padding-left:20px;color:#444; font-size: 21px;font-weight: bold; line-height: 150%;}
/* hover animation */
.activity__media{transition:background-size .6s ease, filter .4s ease;will-change:background-size, filter;background-size:110%;background-position:center;background-repeat:no-repeat}
.activity-link:hover .activity,
.activity-link:focus-visible .activity{transform:translateY(-4px);box-shadow:0 10px 24px rgba(0,0,0,.12)}
.activity-link:hover .activity__media,
.activity-link:focus-visible .activity__media{background-size:125%;filter:saturate(1.06)}
@media (max-width: 860px){
  .activity{grid-template-columns:1fr}
  .activity__body{min-height:auto;padding:20px}
  .activity__title{font-size:22px}
  .activity__bullets{font-size:18px}
}
@media (max-width: 600px){
  .activity__title{font-size:20px}
  .activity__bullets{font-size:16px}
}

/* Grid-2 */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.grid-2__item{min-height:160px;border-radius:var(--radius);box-shadow:var(--shadow);background:#eef6f8;background-size:cover;background-position:center}

/* Forms */
.form{max-width:720px;margin:0 auto}
.form__group{margin-bottom:16px}
.form__group label{display:block;font-weight:700;margin-bottom:6px}
.form__group input[type="text"],
.form__group input[type="email"],
.form__group textarea{width:100%;padding:10px 12px;border:1px solid #ddd;border-radius:8px;font-size:16px}
.form__group .checkbox{display:flex;align-items:center;gap:8px}
.form__error{color:#e64646;margin:6px 0 0;font-size:13px}
.form__actions{display:flex;align-items:center;gap:12px}
.form__note{color:#777}

/* Utility */
.to-top{position:fixed;right:24px;bottom:24px;background:#fff;border:1px solid #009d9e;border-radius:50%;width:64px;height:64px;display:flex;flex-direction:column;align-items:center;justify-content:normal;cursor:pointer;box-shadow:0 4px 12px rgba(0,157,158,.15);transition:opacity .25s ease, transform .2s ease, box-shadow .2s ease;z-index:100;opacity:0;pointer-events:none}
.to-top.is-visible{opacity:1;pointer-events:auto}
.to-top:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(0,157,158,.25)}
.to-top::before{content:'›';display:block;font-size:28px;line-height:1;color:#009d9e;font-weight:700;transform:rotate(-90deg);margin-bottom:-5px; margin-left: -3px;}
.to-top span{font-weight:600;font-size:20px;color:#009d9e;letter-spacing:0.05em}
.white-text {
  color: #fff !important;
}

/* Scroll reveal */
.js [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .6s ease, transform .6s ease;will-change:opacity, transform;transition-delay:var(--reveal-delay, 0s)}
.js [data-reveal].is-revealed{opacity:1;transform:none}
/* Variants */
.js [data-reveal="fade"]{transform:none}
.js [data-reveal="zoom"]{transform:scale(.96)}
.js [data-reveal="zoom"].is-revealed{transform:none}
@media (prefers-reduced-motion: reduce){
  .js [data-reveal]{opacity:1;transform:none;transition:none}
}