:root{
  --primary:#1a1a1a;
  --primary-soft:#2b2b2b;
  --accent:#c62828;
  --accent-dark:#9e1f1f;
  --text:#1a1a1a;
  --muted:#666;
  --bg:#fff;
  --bg-soft:#f7f7f8;
  --border:#e6e6e8;
  --radius:6px;
  --container:1120px;
  --header-h:76px;
  --shadow:0 4px 20px rgba(0,0,0,.06);
  --shadow-card:0 2px 10px rgba(0,0,0,.04);
}

body{
  font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;
  color:var(--text);
  background:var(--bg);
  font-size: 115%;
}

.container{max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.8);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  transition:box-shadow .25s,background .25s;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{box-shadow:var(--shadow);background:rgba(255,255,255,.92);border-bottom-color:var(--border)}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:var(--header-h);padding:0 24px;max-width:var(--container);margin:0 auto;
}
.logo{display:flex;align-items:center;gap:10px;font-size:1.2rem;font-weight:700;color:var(--primary);letter-spacing:.02em}
.logo img{height:36px;width:auto;display:block}
.logo .text-fallback{display:inline-block}

.nav{display:flex;gap:26px;align-items:center}
.nav a{font-size:.98rem;font-weight:500;color:var(--primary);position:relative;padding:4px 0}
.nav a::after{content:"";position:absolute;left:0;bottom:-4px;width:0;height:2px;background:var(--accent);transition:width .25s}
.nav a:hover::after,.nav a.is-active::after{width:100%}
.nav-cta{background:#008000;color:#fff!important;padding:10px 22px!important;border-radius:999px}
.nav-cta::after{display:none}
.nav-cta:hover{background:#32cd32;}

.hamburger{display:none;width:40px;height:40px;position:relative}
.hamburger span{position:absolute;left:8px;width:24px;height:2px;background:var(--primary);transition:transform .3s,top .3s,opacity .3s}
.hamburger span:nth-child(1){top:14px}
.hamburger span:nth-child(2){top:20px}
.hamburger span:nth-child(3){top:26px}
.hamburger.is-open span:nth-child(1){top:20px;transform:rotate(45deg)}
.hamburger.is-open span:nth-child(2){opacity:0}
.hamburger.is-open span:nth-child(3){top:20px;transform:rotate(-45deg)}

@media(max-width:960px){
  .nav{position:fixed;top:var(--header-h);left:0;right:0;bottom:0;background:#fff;flex-direction:column;gap:0;padding:32px 24px;transform:translateX(100%);transition:transform .3s;overflow-y:auto}
  .nav.is-open{transform:translateX(0); min-height: 550px;}
  .nav a{width:100%;padding:18px 0;border-bottom:1px solid var(--border);font-size:1.05rem}
  .nav a::after{display:none}
  .nav-cta{margin-top:16px;text-align:center}
  .hamburger{display:block}
}

/* ---------- Hero (static) ---------- */
.hero{
  position:relative;min-height:94vh;display:flex;align-items:center;
  padding:calc(var(--header-h) + 60px) 24px 80px;
  background:linear-gradient(180deg,#fff 0%,#fafafa 60%,#f2ecec 100%);
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;top:20%;right:-80px;width:360px;height:360px;
  background:radial-gradient(circle,rgba(198,40,40,.12),transparent 70%);
  border-radius:50%;
}
.hero::after{
  content:"";position:absolute;bottom:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--accent),transparent);
  opacity:.5;
}
.hero-inner{position:relative;z-index:2;max-width:var(--container);margin:0 auto;width:100%}
.hero-eyebrow{font-size:.8rem;letter-spacing:.3em;color:var(--accent);margin-bottom:24px;font-weight:500}
.hero-title{
  font-size:clamp(1.8rem,4.5vw,3.4rem);font-weight:700;line-height:1.4;color:var(--primary);
  margin-bottom:28px;
}
.hero-title .accent{color:var(--accent)}
.hero-title small{display:block;font-size:.85rem;letter-spacing:.25em;margin-top:24px;font-weight:400;color:var(--muted)}
.hero-sub{font-size:1.15rem;color:var(--muted);margin-bottom:40px;max-width:640px}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}

/* Video hero */
.hero--video{background:#0a0a0a;color:#fff}
.hero--video::before,.hero--video::after{display:none}
.hero-video{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;z-index:0}
.hero-overlay{position:absolute;inset:0;z-index:1;background:linear-gradient(120deg,rgba(0,0,0,.65) 0%,rgba(0,0,0,.35) 30%,rgba(198,40,40,.25) 100%)}
.hero--video .hero-inner{color:#fff}
.hero--video .hero-title{color:#fff;text-shadow:0 2px 18px rgba(0,0,0,.45)}
.hero--video .hero-title .accent{color:#32cd32;}
.hero--video .hero-title small{color:rgba(255,255,255,.85)}
.hero--video .hero-sub{color:rgba(255,255,255,.9)}
.hero--video .hero-eyebrow{color:#ffb3b3}
.hero--video .btn-outline{border-color:#fff;color:#fff}
.hero--video .btn-outline:hover{background:#fff;color:var(--primary)}

/* ---------- Sections ---------- */
.section{padding:110px 0}
.section-soft{background:var(--bg-soft)}
.section-title{text-align:center;margin-bottom:64px}
.section-title .en{display:block;font-size:3rem;letter-spacing:.1em;color:var(--accent);margin-bottom:0;font-weight:800}
.section-title h2{font-size:clamp(1.6rem,3vw,2.2rem);color:var(--primary);font-weight:700}

.page-header{padding:calc(var(--header-h) + 70px) 0 70px;background:var(--primary);color:#fff;text-align:center;position:relative;overflow:hidden}
.page-header::before{
  content:"";position:absolute;top:-50%;right:-10%;width:400px;height:400px;
  background:radial-gradient(circle,rgba(198,40,40,.25),transparent 70%);
  border-radius:50%;
}
.page-header > *{position:relative;z-index:2}
.page-header .en{font-size:.8rem;letter-spacing:.3em;color:var(--accent);margin-bottom:10px;display:block}
.page-header h1{font-size:clamp(1.7rem,3.2vw,2.4rem)}
#services .page-header{ background: url(../images/phd_services.png) 0 0;}
#pricing .page-header{ background: url(../images/phd_pricing.png) 0 430px;}
#works .page-header{ background: url(../images/phd_works.png) 0 0;}
#flow .page-header{ background: url(../images/phd_flow.png) 0 640px;}
#company .page-header{ background: url(../images/phd_company.png) 0 750px;}
#news .page-header{ background: url(../images/phd_news.png) 0 600px;}
#newsdetail .page-header{ background: url(../images/phd_news.png) 0 600px;}
#contact .page-header{ background: url(../images/phd_contact.png) 0 700px;}
#privacypolicy .page-header{ background: url(../images/phd_services.png) 0 0;}

/* About */
.about{text-align:center;max-width:820px;margin:0 auto}
.about p{margin-bottom:20px;color:var(--muted)}
.about p:first-of-type{font-size:1.2rem;color:var(--primary);font-weight:500;text-align:left;}

/* Services */
.services{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.service-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-card);transition:transform .3s,box-shadow .3s;border:1px solid var(--border)}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--accent)}
.service-card .thumb{aspect-ratio:4/3;background:linear-gradient(135deg,#2b2b2b,#1a1a1a);display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.3rem;font-weight:700;letter-spacing:.15em;position:relative}
.service-card .thumb::after{content:"";position:absolute;bottom:0;left:0;width:40%;height:3px;background:var(--accent)}
.service-card .thumb.c2{background:linear-gradient(135deg,#3a2b2b,#1a1a1a)}
.service-card .thumb.c3{background:linear-gradient(135deg,#c62828,#7a1a1a)}
.service-card .thumb.c4{background:linear-gradient(135deg,#444,#222)}
.service-card .body{padding:28px 24px}
.service-card h3{font-size:1.2rem;color:var(--primary);margin-bottom:10px}
.service-card p{color:var(--muted);font-size:1.06rem}

/* Works */
.works-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.work-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-card);border:1px solid var(--border);transition:transform .3s,box-shadow .3s}
.work-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.work-card .thumb{aspect-ratio:4/3;background:linear-gradient(135deg,#e8e8ea,#d4d4d8);display:flex;align-items:center;justify-content:center;color:#8b8b92;font-size:.9rem}
.work-card .body{padding:18px}
.work-card .cat{font-size:.75rem;color:var(--accent);letter-spacing:.1em;margin-bottom:6px;font-weight:500}
.work-card h3{font-size:1rem;color:var(--primary)}

/* News */
.news-list{max-width:860px;margin:0 auto}
.news-item{display:grid;grid-template-columns:120px 120px 1fr;gap:20px;padding:20px;border-bottom:1px solid var(--border);align-items:center}
.news-item .date{color:var(--muted);font-size:.9rem}
.news-item .cat{display:inline-block;padding:4px 12px;border:1px solid var(--primary);color:var(--primary);font-size:.75rem;border-radius:999px;text-align:center}
.news-item h3{font-size:1.05rem;font-weight:500}
.news-link{display:block;color:inherit;text-decoration:none;transition:background .15s}
.news-link:hover{background:rgba(0,0,0,.02)}
.news-link:hover h3{color:var(--accent)}
.news-empty{text-align:center;padding:40px 20px;color:var(--muted)}

/* News detail */
.article-body{max-width:760px;margin:0 auto}
.article-meta{display:flex;gap:16px;align-items:center;margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid var(--border)}
.article-meta .date{color:var(--muted);font-size:.9rem}
.article-meta .cat{display:inline-block;padding:4px 12px;border:1px solid var(--primary);color:var(--primary);font-size:.75rem;border-radius:999px}
.article-content{line-height:1.9;font-size:1.15rem}
.article-content p{margin:0 0 1.2em}
.article-content h3{font-size:1.15rem;color:var(--primary);margin:1.6em 0 .8em;font-weight:600}
.article-content h4{font-size:1.02rem;color:var(--primary);margin:1.4em 0 .6em;font-weight:600}
.article-content ul,.article-content ol{margin:0 0 1.2em;padding-left:1.6em}
.article-content li{margin-bottom:.4em}
.article-content blockquote{margin:0 0 1.2em;padding:12px 18px;border-left:3px solid var(--accent);background:#fafafa;color:var(--muted)}
.article-content a{color:var(--accent);text-decoration:underline}
.article-back{margin-top:48px;padding-top:24px;border-top:1px solid var(--border)}
.article-back a{color:var(--muted);font-size:.92rem}
.article-back a:hover{color:var(--accent)}


/* Contact CTA (single center button) */
.contact-cta-single{text-align:center;max-width:720px;margin:0 auto;padding:60px 32px;background:#fff;border:1px solid var(--border);border-radius:var(--radius)}
.contact-cta-single h3{font-size:1.4rem;color:var(--primary);margin-bottom:14px}
.contact-cta-single p{color:var(--muted);margin-bottom:28px}

/* Buttons */
.btn{display:inline-block;padding:14px 36px;border-radius:999px;font-weight:500;transition:transform .2s,background .2s,color .2s}
.btn-primary{background:#008000;color:#fff}
.btn-primary:hover{background:#32cd32;transform:translateY(-2px)}
.btn-outline{border:2px solid var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-navy{background:var(--primary);color:#fff}
.btn-navy:hover{background:#000}
.center{text-align:center;margin-top:40px}

/* Footer */
.site-footer{background:var(--primary);color:#c8c8cc;padding:70px 0 24px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-logo{display:flex;align-items:center;gap:10px;font-size:1.2rem;font-weight:700;color:#fff;margin-bottom:14px}
.footer-logo img{height:32px;width:auto;filter:brightness(0) invert(1)}
.footer address{font-style:normal;font-size:.9rem;line-height:1.9}
.footer-grid h4{color:#fff;font-size:.8rem;letter-spacing:.15em;margin-bottom:16px}
.footer-grid ul li{margin-bottom:10px;font-size:.9rem}
.footer-grid a:hover{color:var(--accent)}
.sns{display:flex;gap:12px;margin-top:16px}
.sns a{width:36px;height:36px;border:1px solid #4a4a50;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.8rem;color:#fff}
.sns a:hover{border-color:var(--accent);color:var(--accent)}
.copy{text-align:center;font-size:.78rem;color:#8b8b92;padding-top:24px;border-top:1px solid #2e2e34}

@media(max-width:960px){
  .services,.works-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .news-item{grid-template-columns:1fr;gap:6px}
  .section{padding:70px 0}
  .hero{min-height:70vh}
}

/* ---------- Company page ---------- */
.info-table{max-width:820px;margin:0 auto;border-top:1px solid var(--border)}
.info-table div{display:grid;grid-template-columns:200px 1fr;border-bottom:1px solid var(--border);padding:20px 0}
.info-table dt{color:var(--primary);font-weight:700;font-size:.95rem}
.info-table dd{color:var(--text)}
@media(max-width:700px){.info-table div{grid-template-columns:1fr;gap:6px}}

.greeting{max-width:820px;margin:0 auto;}
.greeting p{margin-bottom:18px}
.greeting .sign{text-align:right;margin-top:30px;font-weight:500}

.history{max-width:820px;margin:0 auto}
.history li{display:grid;grid-template-columns:140px 1fr;padding:16px 0;border-bottom:1px dashed var(--border)}
.history .yr{color:var(--accent);font-weight:700}

.map-frame{background:#e8e8ea;height:360px;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:#8b8b92}

/* Services / biz-item */
.biz-item{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-bottom:80px}
.biz-item:nth-child(even){direction:rtl}
.biz-item:nth-child(even)>*{direction:ltr}
.biz-item .visual{aspect-ratio:4/3;background:linear-gradient(135deg,#2b2b2b,#1a1a1a);border-radius:var(--radius);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.4rem;font-weight:700;letter-spacing:.15em;position:relative;overflow:hidden}
.biz-item .visual::after{content:"";position:absolute;bottom:0;left:0;right:0;height:4px;background:var(--accent)}
.biz-item.c2 .visual{background:linear-gradient(135deg,#3a2b2b,#1a1a1a)}
.biz-item.c3 .visual{background:linear-gradient(135deg,#c62828,#7a1a1a)}
.biz-item.c4 .visual{background:linear-gradient(135deg,#444,#222)}
.biz-item h3{font-size:1.6rem;color:var(--primary);margin-bottom:16px}
.biz-item .en{font-size:.8rem;color:var(--accent);letter-spacing:.2em;margin-bottom:8px;display:block}
.biz-item p{color:var(--muted);margin-bottom:16px}
.biz-item ul li{padding:6px 0 6px 20px;position:relative}
.biz-item ul li::before{content:"";position:absolute;left:0;top:14px;width:10px;height:2px;background:var(--accent)}
.biz-catch{font-size:1.2rem;color:var(--accent);margin-bottom:14px!important;font-weight:500;letter-spacing:.02em}
.biz-scope{margin-top:18px;padding-top:16px;border-top:1px dashed var(--border);font-size:.85rem;color:var(--muted)}
.biz-scope strong{color:var(--primary);font-weight:700;margin-right:8px}
.service-extra{max-width:820px;margin:60px auto 0;padding:32px;background:var(--bg-soft);border-left:4px solid var(--accent);border-radius:var(--radius)}
.service-extra h3{font-size:1.2rem;color:var(--primary);margin-bottom:10px}
.service-extra p{color:var(--muted);font-size:.95rem}
@media(max-width:960px){.biz-item,.biz-item:nth-child(even){grid-template-columns:1fr;direction:ltr;margin-bottom:60px}}

/* Works filter */
.filters{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:40px}
.filter{padding:8px 20px;border:1px solid var(--border);border-radius:999px;font-size:.9rem;color:var(--muted);cursor:pointer;background:#fff}
.filter.is-active{background:var(--primary);color:#fff;border-color:var(--primary)}

/* Pricing */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:1020px;margin:0 auto}
.price-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:40px 28px;text-align:center;display:flex;flex-direction:column;transition:transform .3s,box-shadow .3s}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.price-card.is-featured{border-color:var(--accent);border-width:2px;position:relative}
.price-card.is-featured::before{content:"OBSERVED";display:none}
.price-card .badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--accent);color:#fff;padding:4px 16px;border-radius:999px;font-size:.75rem;letter-spacing:.1em}
.price-card h3{font-size:1.7rem;color:var(--primary);margin-bottom:6px}
.price-card .plan-desc{color:var(--muted);font-size:.95rem;margin-bottom:24px}
.price-card .price{font-size:2.2rem;color:var(--primary);font-weight:700;margin-bottom:4px}
.price-card .price .unit{font-size:.85rem;color:var(--muted);font-weight:400;margin-left:4px}
.price-card .term{font-size:.8rem;color:var(--muted);margin-bottom:28px}
.price-card ul{text-align:left;margin-bottom:32px;flex:1}
.price-card ul li{padding:10px 0 10px 24px;position:relative;border-bottom:1px dashed var(--border);font-size:.98rem}
.price-card ul li::before{content:"✓";position:absolute;left:0;top:10px;color:var(--accent);font-weight:700}
.pricing-note{margin-top:50px;padding:24px;background:var(--bg-soft);border-radius:var(--radius);color:var(--muted);font-size:1.05rem;max-width:820px;margin-left:auto;margin-right:auto}
@media(max-width:960px){.pricing-grid{grid-template-columns:1fr}}

/* Option pricing tables */
.price-group{max-width:1020px;margin:0 auto 56px}
.price-group-head{background:var(--primary);color:#fff;padding:14px 22px;border-radius:var(--radius) var(--radius) 0 0;font-size:1.05rem;font-weight:700;letter-spacing:.04em}
.price-group-head small{font-weight:400;font-size:.8rem;margin-left:10px;color:rgba(255,255,255,.75)}
.price-rows{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--border);border:1px solid var(--border);border-top:0;border-radius:0 0 var(--radius) var(--radius);overflow:hidden}
.price-rows.cols-3{grid-template-columns:1fr 1fr 1fr}
.price-row{background:#fff;padding:22px 22px 20px;display:flex;flex-direction:column;gap:8px}
.price-row .ttl{font-size:1.1rem;color:var(--primary);font-weight:500;min-height:2.6em;line-height:1.5}
.price-row .amt{font-size:1.5rem;color:var(--accent);font-weight:700;font-family:"Inter","Noto Sans JP",sans-serif}
.price-row .amt .unit{font-size:.75rem;color:var(--muted);font-weight:400;margin-left:4px}
.price-row .term{font-size:.8rem;color:var(--muted)}
@media(max-width:800px){.price-rows,.price-rows.cols-3{grid-template-columns:1fr}}
.price-section-title{text-align:center;margin:100px 0 50px}
.price-section-title .en{display:block;font-size:.8rem;letter-spacing:.3em;color:var(--accent);margin-bottom:10px;font-weight:500}
.price-section-title h2{font-size:clamp(1.4rem,2.6vw,1.9rem);color:var(--primary)}

/* Flow */
.flow-list{max-width:820px;margin:0 auto;position:relative}
.flow-item{display:grid;grid-template-columns:100px 1fr;gap:32px;padding:32px 0;border-bottom:1px solid var(--border);position:relative}
.flow-item:last-child{border-bottom:0}
.flow-num{font-size:2.4rem;font-weight:700;color:var(--accent);line-height:1;font-family:"Inter","Noto Sans JP",sans-serif}
.flow-body h3{font-size:1.25rem;color:var(--primary);margin-bottom:8px}
.flow-body .term{display:inline-block;padding:3px 12px;background:var(--bg-soft);border-radius:999px;font-size:.78rem;color:var(--muted);margin-bottom:12px}
.flow-body p{color:var(--muted);font-size:1.05rem}
@media(max-width:700px){.flow-item{grid-template-columns:1fr;gap:12px}.flow-num{font-size:1.8rem}}

/* Contact form */
.form{max-width:720px;margin:0 auto}
.form .row{margin-bottom:24px}
.form label{display:block;font-weight:500;color:var(--primary);margin-bottom:8px;font-size:.95rem}
.form .req{color:var(--accent);font-size:.8rem;margin-left:6px}
.form input[type=text],.form input[type=email],.form input[type=tel],.form textarea,.form select{
  width:100%;padding:14px 16px;border:1px solid var(--border);border-radius:6px;background:#fff;transition:border-color .2s
}
.form input:focus,.form textarea:focus,.form select:focus{outline:none;border-color:var(--accent)}
.form textarea{min-height:180px;resize:vertical}
.form .check{display:flex;align-items:flex-start;gap:10px;margin:20px 0 10px}
.form .check input{margin-top:6px}
.form .submit-wrap{text-align:center;margin-top:32px}
.form .err{display:block;color:#c0392b;font-size:.85rem;margin-top:6px;min-height:1em}
.form input.is-invalid,.form textarea.is-invalid,.form select.is-invalid{border-color:#c0392b}
#contact a.pplink{ text-decoration: underline;}
#contact a:hover{ color:var(--accent);}

/* Utilities */
.lead{font-size:1.45rem;font-weight: 600;text-align:center;max-width:760px;margin:0 auto 50px;color:var(--primary)}
.leadcontact{font-size:1.3rem;font-weight: 600;text-align:center;max-width:760px;margin:0 auto 50px;color:var(--primary)}