/*
Theme Name: THATERA
Description: 株式会社ザテラのコーポレートサイト(クラシックテーマ)
Version: 1.1.0
Requires PHP: 7.4
Text Domain: thatera
*/

/* ==========================================================
   1. Design source (design/index.html 2026-09-21, design/index-2026-10-19.html).
      Copied verbatim except the banner image path.
      Keep colors and fonts as they are. Theme additions are in 2.
   ========================================================== */
/* 「白×深紺」: 明朝の見出し、深紺1色のアクセント、紺地のFV。角丸なし、余白を広く取る */
:root{
  --navy:#0E1E3E; --navy-2:#1B3468; --ink:#1B2233; --body:#4A5060; --muted:#6B7280; --gray:#9AA0AE;
  --accent:#0E1E3E; --line:#E3E9F2; --line-2:#EDF1F6; --bg:#FFFFFF; --soft:#EEF6FD;
  --sans:"Noto Sans JP","Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic",Meiryo,sans-serif;
  --serif:"Shippori Mincho","Noto Serif JP","Hiragino Mincho ProN","Yu Mincho",serif;
  --latin:"Inter","Noto Sans JP",sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:15px;line-height:2;letter-spacing:.04em;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3,p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{max-width:1280px;margin:0 auto;padding:0 46px}
.logo{font-family:var(--serif);font-weight:600;font-size:24px;letter-spacing:.18em;color:var(--navy)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:14px;font-weight:500;font-size:14px;letter-spacing:.08em;color:#fff;background:var(--navy);border:1px solid var(--navy);padding:0 30px;height:52px;white-space:nowrap;transition:background .25s,color .25s,border-color .25s}
.btn:hover{background:var(--navy-2);border-color:var(--navy-2)}
.btn .ar{font-family:var(--latin);font-size:16px;line-height:1}
.btn-outline{background:#fff;color:var(--navy);border-color:#C1C8D8}
.btn-outline:hover{background:var(--soft);color:var(--navy);border-color:var(--navy)}

/* header */
.header{height:96px;border-bottom:1px solid var(--line-2)}
.header .container{height:100%;display:flex;align-items:center;justify-content:space-between}
.nav{display:flex;align-items:center;gap:36px;margin-left:auto;margin-right:40px}
.nav a{font-size:14px;font-weight:400;letter-spacing:.06em;color:var(--navy)}
.nav a:hover{color:var(--navy-2)}
.header .btn{height:44px;padding:0 28px}

/* hero: 深紺の全幅。写真は右側に置き、左へ溶かす */
.hero{position:relative;height:600px;overflow:hidden;background:var(--navy)}
.hero-img{position:absolute;right:0;top:0;height:100%;width:auto;max-width:none;opacity:.9;-webkit-mask-image:linear-gradient(90deg,transparent 0,rgba(0,0,0,.6) 18%,#000 45%);mask-image:linear-gradient(90deg,transparent 0,rgba(0,0,0,.6) 18%,#000 45%)}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#0E1E3E 0%,rgba(14,30,62,.92) 40%,rgba(14,30,62,.55) 65%,rgba(14,30,62,.25) 100%);pointer-events:none}
.hero .container{position:relative;z-index:1;height:100%;display:flex;flex-direction:column;justify-content:center;padding-top:6px}
.hero h1{font-family:var(--serif);font-weight:600;font-size:50px;line-height:1.5;letter-spacing:.06em;color:#fff;margin-bottom:24px}
.hero .lead{font-size:15.5px;line-height:1.9;letter-spacing:.06em;color:rgba(255,255,255,.82);margin-bottom:40px}
.hero .btns{display:flex;gap:16px}
.hero .btn{background:#fff;color:var(--navy);border-color:#fff;height:56px;min-width:250px;padding:0 40px}
.hero .btn:hover{background:var(--soft);border-color:var(--soft);color:var(--navy)}
.hero .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.hero .btn-outline:hover{background:rgba(255,255,255,.1);color:#fff;border-color:#fff}

/* stats */
.stats{border-bottom:1px solid var(--line)}
.stats ul{display:grid;grid-template-columns:repeat(3,1fr);height:168px}
.stats li{display:flex;align-items:center;padding:0 10px 0 48px;white-space:nowrap;border-left:1px solid var(--line)}
.stats li:first-child{border-left:0;padding-left:16px}
.stat-num{font-family:var(--serif);font-weight:600;font-size:40px;letter-spacing:.04em;color:var(--navy);line-height:1.2}
.stat-num small{font-size:20px;margin-left:2px}
.stat-label{font-size:13.5px;letter-spacing:.08em;color:var(--muted);line-height:1.5}

/* section common */
.section{padding:96px 0 104px}
.section.alt{background:var(--soft)}
.sec-head{margin-bottom:44px}
.eyebrow{display:flex;align-items:center;gap:14px;font-family:var(--latin);font-weight:500;font-size:11.5px;letter-spacing:.3em;color:var(--accent);line-height:1.4;margin-bottom:12px}
.eyebrow::before{content:"";width:36px;height:1px;background:var(--accent)}
.sec-head h2,.company h2{font-family:var(--serif);font-weight:600;font-size:40px;letter-spacing:.08em;line-height:1.4;color:var(--navy)}
.card{background:#fff;border:1px solid var(--line)}
.icon-circle{width:106px;height:106px;border-radius:50%;background:var(--soft);display:flex;align-items:center;justify-content:center;flex:none}
.icon-circle svg{width:52px;height:52px;stroke:var(--navy)}
.icon-circle svg [fill]{fill:var(--navy)}
.icon-circle.sm{width:88px;height:88px}
.icon-circle.sm svg{width:44px;height:44px}

/* capabilities: 対応技術の一覧と技術ロゴ */
.tech-block{background:#fff;border:1px solid var(--line);padding:40px 44px 36px}
.tech-lead{font-size:14.5px;color:var(--muted);margin-bottom:14px}
.tech-list dl{margin:0;display:grid;grid-template-columns:150px 1fr;column-gap:16px}
.tech-list dt{font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--navy);padding:10px 0;border-top:1px solid var(--line-2)}
.tech-list dd{margin:0;font-size:14px;line-height:1.8;color:var(--ink);padding:10px 0;border-top:1px solid var(--line-2)}
.tech-list dt:first-of-type,.tech-list dd:first-of-type{border-top:0}
.tech-logos{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:30px;padding:30px 0 0;border-top:1px solid var(--line)}
.tech-logos li{flex:1;display:flex;justify-content:center}
.tech-logos img{height:48px;width:auto}

/* services */
.svc-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.svc-card{padding:44px 48px 46px}
.svc-card h3{font-family:var(--serif);font-weight:600;font-size:28px;letter-spacing:.08em;line-height:1.4;color:var(--navy);margin-bottom:18px}
.svc-card h3::after{content:"";display:block;width:32px;height:1px;background:var(--accent);margin-top:16px}
.svc-card p{font-size:15px;line-height:2;color:var(--body)}
/* 日本人PM: 2つのサービスに共通する補足として、左の紺線・小さめのゴシック見出し・薄い地で一段下の扱いにする */
.pm-card{margin-top:16px;display:grid;grid-template-columns:1fr 380px;gap:36px;align-items:center;padding:22px 36px 22px 32px;background:#F7FAFD;border-left:3px solid var(--navy)}
.pm-card h3{font-family:var(--sans);font-weight:700;font-size:18px;letter-spacing:.06em;line-height:1.5;color:var(--navy);margin-bottom:8px}
.pm-card p{font-size:14px;line-height:1.9;color:var(--body)}
.pm-points{border-left:1px solid var(--line);padding-left:32px}
.pm-points li{position:relative;padding-left:18px;font-size:13.5px;line-height:1.7;color:var(--ink);margin:4px 0}
.pm-points li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:50%;background:var(--accent)}

/* strengths */
.banner{position:relative;height:280px;overflow:hidden;background:#EEF4FC url(assets/img/banner.jpg) center/cover no-repeat;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;margin-bottom:20px}
.banner::before{content:"";position:absolute;inset:0;background:rgba(255,255,255,.55)}
.banner-kicker{position:relative;font-family:var(--latin);font-weight:500;font-size:12.5px;letter-spacing:.32em;color:var(--accent);padding-bottom:10px;border-bottom:1px solid var(--accent);margin-bottom:22px}
.banner h3{position:relative;font-family:var(--serif);font-weight:600;font-size:46px;letter-spacing:.1em;line-height:1.3;color:var(--navy)}
.feat-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:20px}
.feat-card{display:flex;gap:26px;align-items:flex-start;padding:36px 40px 32px;min-height:202px}
.feat-card h3{font-family:var(--serif);font-weight:600;font-size:21px;letter-spacing:.06em;line-height:1.5;color:var(--navy);margin:2px 0 8px}
.feat-card p{font-size:15px;line-height:1.9;color:var(--body)}
.cta-band{display:flex;align-items:center;gap:36px;background:var(--navy);color:#fff;padding:40px 48px}
.cta-band .icon-circle{background:rgba(255,255,255,.08)}
.cta-band .icon-circle svg{stroke:#fff}
.cta-band h3{font-family:var(--serif);font-weight:600;font-size:24px;letter-spacing:.06em;line-height:1.4;color:#fff;margin-bottom:6px}
.cta-band p{font-size:15px;line-height:1.85;color:rgba(255,255,255,.8)}
.cta-band .btn{margin-left:auto;background:#fff;color:var(--navy);border-color:#fff;height:60px;min-width:300px}
.cta-band .btn:hover{background:var(--soft);border-color:var(--soft);color:var(--navy)}

/* works */
.works-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.work-card{display:grid;grid-template-columns:292px 1fr;height:234px;overflow:hidden;border:1px solid var(--line);background:#fff}
.work-card img{width:100%;height:100%;object-fit:cover}
.work-body{padding:30px 26px 24px 28px;display:flex;flex-direction:column;justify-content:center}
.work-card h3{font-family:var(--serif);font-weight:600;font-size:21px;letter-spacing:.06em;line-height:1.5;color:var(--navy);margin-bottom:12px}
.work-card p{font-size:14px;line-height:1.8;color:var(--body)}

/* works: featured */
.work-card.wide{grid-column:1/-1;grid-template-columns:520px 1fr;height:auto;min-height:300px}
.work-card.wide img{object-fit:contain;background:#fff;padding:12px 8px}
.work-card.wide .work-body{padding:36px 40px}
.work-card.wide p{font-size:14.5px}
.work-link{margin-top:14px;font-family:var(--latin);font-size:13px;letter-spacing:.02em;color:var(--navy);text-decoration:underline;text-underline-offset:3px;word-break:break-all}

/* members */
.member-sub{font-family:var(--sans);font-weight:700;font-size:16px;letter-spacing:.08em;color:var(--navy);margin:0 0 18px;padding-left:12px;border-left:3px solid var(--navy)}
.lead-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:56px}
.eng-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.member{border:1px solid var(--line);background:#fff;display:flex;flex-direction:column}
.member .ph{aspect-ratio:4/5;background:var(--soft);display:flex;align-items:center;justify-content:center;color:var(--gray);font-size:13px;letter-spacing:.08em;overflow:hidden}
.eng-grid .member .ph{aspect-ratio:1/1;background:#fff}
.member .ph img{width:100%;height:100%;object-fit:cover}
.member-body{padding:24px 24px 26px}
.member .role{font-family:var(--latin);font-size:12px;font-weight:500;letter-spacing:.06em;color:var(--muted);margin-bottom:6px}
.member h3{font-family:var(--serif);font-weight:600;font-size:22px;letter-spacing:.08em;line-height:1.4;color:var(--navy);margin-bottom:10px}
.member h3 small{font-family:var(--latin);font-size:12px;font-weight:500;letter-spacing:.08em;color:var(--muted);margin-left:10px}
.member p{font-size:14px;line-height:1.85;color:var(--body)}
.member .tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}
.member .tags span{font-size:12px;line-height:1;padding:6px 9px;border:1px solid var(--line-2);color:var(--navy);letter-spacing:.04em}
.member .tags span.ja{background:var(--navy);border-color:var(--navy);color:#fff}
.member dl{margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}
.member dt{font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--navy);margin-bottom:4px}
.member dd{margin:0;font-size:13px;line-height:1.75;color:var(--body)}

/* company */
.company{display:grid;grid-template-columns:238px 494px;gap:0;align-items:start}
.company table{border-collapse:collapse;width:100%}
.company th,.company td{font-size:15px;line-height:1.5;text-align:left;padding:8px 6px;border-bottom:1px solid var(--line);height:37px;vertical-align:top}
.company th{width:163px;font-weight:500;letter-spacing:.06em;color:var(--muted)}
.company td{color:var(--ink);font-weight:500}
.company tr:first-child th,.company tr:first-child td{border-top:1px solid var(--line)}

/* footer */
.footer{background:var(--navy);color:#fff;padding:56px 0 32px}
.footer-row{display:flex;align-items:center;justify-content:space-between}
.footer .logo{color:#fff}
.footer .nav{margin:0 auto;gap:40px}
.footer .nav a{color:rgba(255,255,255,.8)}
.footer .nav a:hover{color:#fff}
.footer .btn{min-width:232px;background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.footer .btn:hover{background:#fff;border-color:#fff;color:var(--navy)}
.copyright{text-align:center;font-family:var(--latin);font-weight:400;font-size:12.5px;letter-spacing:.1em;color:rgba(255,255,255,.45);margin-top:40px}

/* responsive */
@media (max-width:1100px){
  .stats li{padding:0 8px 0 24px}
  .stat-num{font-size:30px}
  .stat-num small{font-size:16px}
  .stat-label{font-size:13px}
  .company{grid-template-columns:1fr;gap:20px}
  .hero-img{-webkit-mask-image:linear-gradient(90deg,transparent 0,#000 40%);mask-image:linear-gradient(90deg,transparent 0,#000 40%);opacity:.6}
  .pm-card{grid-template-columns:1fr;gap:20px}
  .pm-points{border-left:0;padding-left:0}
  .tech-logos img{height:40px}
  .lead-grid,.eng-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:820px){
  .container{padding:0 20px}
  .header{height:64px}
  .header .nav{display:none}
  .header .btn{min-width:0;height:40px;padding:0 18px;font-size:13px}
  .hero{height:auto;padding:56px 0 60px}
  .hero-img{position:absolute;right:0;top:0;height:100%;opacity:.35}
  .hero h1{font-size:30px;line-height:1.5}
  .hero .lead{font-size:15px}
  .hero .btns{flex-direction:column}
  .hero .btn{min-width:0;width:100%}
  .stats ul{grid-template-columns:1fr;height:auto;padding:8px 0}
  .stats li{border-left:0;border-top:1px solid var(--line);padding:22px 0;white-space:normal}
  .stats li:first-child{border-top:0;padding-left:0}
  .stat-num{font-size:30px}
  .section{padding:64px 0}
  .sec-head{margin-bottom:28px}
  .sec-head h2,.company h2{font-size:28px}
  .svc-card p br,.feat-card p br,.work-card p br,.cta-band p br{display:none}
  .svc-grid,.feat-grid,.works-grid{grid-template-columns:1fr}
  .svc-card,.feat-card{padding:28px 22px}
  .pm-card{padding:22px 20px 22px 18px}
  .svc-card h3{font-size:24px}
  .tech-block{padding:20px}
  .tech-logos{flex-wrap:wrap;justify-content:center;gap:18px 22px;padding-top:20px}
  .tech-logos li{flex:0 0 auto}
  .tech-logos img{height:34px}
  .tech-list dl{grid-template-columns:1fr;column-gap:0}
  .tech-list dt{padding-bottom:0}
  .tech-list dd{border-top:0;padding-top:4px}
  .banner{height:auto;padding:40px 20px}
  .banner h3{font-size:26px;word-break:keep-all;overflow-wrap:anywhere}
  .feat-card{min-height:0}
  .feat-card h3{font-size:19px}
  .feat-card h3 br{display:none}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 22px}
  .cta-band h3{font-size:21px}
  .cta-band .btn{margin-left:0;width:100%;min-width:0}
  .work-card{grid-template-columns:1fr;height:auto}
  .work-card img{height:200px}
  .work-body{padding-bottom:28px}
  .work-card.wide{grid-template-columns:1fr}
  .work-card.wide img{height:220px}
  .work-card.wide .work-body{padding:24px 22px 28px}
  .lead-grid,.eng-grid{grid-template-columns:1fr}
  .lead-grid{margin-bottom:40px}
  .footer{padding:40px 0 28px}
  .footer-row{flex-direction:column;gap:20px}
  .footer .nav{flex-wrap:wrap;justify-content:center;gap:10px 22px}
  .footer .nav a{font-size:14px;white-space:nowrap}
}

/* ==========================================================
   2. Theme additions (contact mail, news, sub pages, 404).
      Built only from the tokens above.
   ========================================================== */
.screen-reader-text{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.work-card{color:inherit}
.company td a{text-decoration:underline;text-decoration-color:var(--line);text-underline-offset:.3em}

/* contact: mail address in the CTA band */
.cta-band .btn.mail{font-family:var(--latin);letter-spacing:.04em;text-transform:none}

/* stats: two columns while the engineer count is not set */
.stats ul.is-two{grid-template-columns:repeat(2,1fr)}

/* phone menu (the design hides the nav under 820px) */
.nav-toggle{display:none;font:inherit;font-size:13px;letter-spacing:.06em;color:var(--navy);background:#fff;border:1px solid #C1C8D8;height:40px;padding:0 14px;cursor:pointer}

/* news (front page and list) */
.news-list{border-top:1px solid var(--line);background:#fff}
.news-item{border-bottom:1px solid var(--line)}
.news-item > a{display:flex;gap:32px;align-items:baseline;padding:20px 28px}
.news-item time{flex:none;font-family:var(--latin);font-size:13px;letter-spacing:.1em;color:var(--muted)}
.news-item p{font-size:15px;line-height:1.8;color:var(--ink)}
.news-item a:hover p,.news-item a:focus-visible p{color:var(--navy-2);text-decoration:underline;text-underline-offset:.3em}
.news-empty{padding:20px 28px;font-size:14px;color:var(--muted)}
.news-more-wrap{margin-top:32px;text-align:center}
.pager{display:flex;justify-content:center;gap:20px;margin-top:32px;font-family:var(--latin);font-size:14px;letter-spacing:.08em;color:var(--navy)}
.pager .current{border-bottom:1px solid var(--navy)}

/* sub pages: keep the footer at the bottom on short pages */
body:not(.home){min-height:100svh;display:flex;flex-direction:column}
body:not(.home) main{flex:1}
.page-title{font-family:var(--serif);font-weight:600;font-size:32px;letter-spacing:.06em;line-height:1.5;color:var(--navy)}
.page-head time{display:block;margin-top:12px;font-family:var(--latin);font-size:13px;letter-spacing:.1em;color:var(--muted)}
.narrow{max-width:800px}

/* post body */
.entry{font-size:15px;line-height:2;color:var(--body)}
.entry > * + *{margin-top:1.4em}
.entry h2{font-family:var(--serif);font-weight:600;font-size:22px;letter-spacing:.06em;color:var(--navy);margin-top:2.2em;padding-bottom:.5em;border-bottom:1px solid var(--line)}
.entry h3{font-family:var(--serif);font-weight:600;font-size:18px;letter-spacing:.06em;color:var(--navy);margin-top:1.8em}
.entry ul,.entry ol{padding-left:1.4em}
.entry ul{list-style:disc}
.entry a{color:var(--navy-2);text-decoration:underline;text-underline-offset:.25em}
.entry img{max-width:100%;height:auto}
.entry table{width:100%;border-collapse:collapse;font-size:14px}
.entry th,.entry td{text-align:left;padding:10px 6px;border-bottom:1px solid var(--line);vertical-align:top}
.entry-foot{margin-top:56px;text-align:center}

/* 404 */
.notfound p{color:var(--body);margin-bottom:32px}

@media (max-width:820px){
  .header{position:relative}
  .nav-toggle{display:block;margin-left:auto;margin-right:8px;white-space:nowrap}
  .header.is-open .nav{display:flex;position:absolute;top:64px;left:0;right:0;z-index:20;flex-direction:column;align-items:stretch;gap:0;margin:0;padding:4px 20px 12px;background:#fff;border-bottom:1px solid var(--line)}
  .header.is-open .nav a{padding:12px 0;font-size:15px;border-bottom:1px solid var(--line-2)}
  .header.is-open .nav a:last-child{border-bottom:0}
  .stats ul.is-two{grid-template-columns:1fr}
  .news-item > a{flex-direction:column;gap:4px;padding:16px}
  .news-empty{padding:16px}
  .page-title{font-size:24px}
}
@media (max-width:480px){
  .header .logo{font-size:18px;letter-spacing:.12em}
  .nav-toggle{padding:0 10px;margin-right:6px}
  .header .btn{padding:0 12px;gap:0}
  .header .btn .ar{display:none}
}