/*
Theme Name: O-SNB（仮）
Theme URI: https://o-snb.com/
Author: O-SNB
Description: O-SNB コーポレートサイト用オリジナルテーマ（白基調×赤×ゴシック・仮デザイン）。
Version: 1.0
Requires at least: 5.0
Tested up to: 6.5
*/

/* ============================================================
   O-SNB shared stylesheet（仮デザイン）
   白基調 × 赤(#CC0000) × ゴシック体
============================================================ */
:root{
  --bg:#ffffff;
  --bg-soft:#f6f6f8;
  --fg:#171719;
  --muted:#6c6c75;
  --line:rgba(0,0,0,.1);
  --accent:#cc0000;
  --accent-soft:rgba(204,0,0,.08);
  --maxw:1180px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--fg);
  font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;
  line-height:1.85;font-weight:500;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.en{font-family:"Oswald",sans-serif;letter-spacing:.12em;text-transform:uppercase}

/* ===== scroll progress ===== */
.progress{position:fixed;top:0;left:0;height:3px;width:0;background:var(--accent);z-index:300;transition:width .1s linear}

/* ===== floating background ===== */
.bg-deco{position:fixed;inset:0;z-index:-2;overflow:hidden;pointer-events:none}
.blob{position:absolute;border-radius:50%;filter:blur(60px);opacity:.5}
.blob.a{width:520px;height:520px;background:rgba(204,0,0,.10);top:-120px;right:-100px;animation:drift 22s ease-in-out infinite}
.blob.b{width:460px;height:460px;background:rgba(204,0,0,.06);bottom:-140px;left:-120px;animation:drift 28s ease-in-out infinite reverse}
.blob.c{width:380px;height:380px;background:rgba(0,0,0,.04);top:40%;left:55%;animation:drift 25s ease-in-out infinite}
@keyframes drift{0%,100%{transform:translate(0,0) scale(1)}33%{transform:translate(60px,-40px) scale(1.1)}66%{transform:translate(-40px,50px) scale(.95)}}
.grid-bg{position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:linear-gradient(rgba(0,0,0,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(0,0,0,.035) 1px,transparent 1px);
  background-size:70px 70px;mask-image:radial-gradient(circle at 50% 30%,#000,transparent 80%)}
.shape{position:fixed;z-index:-1;border:1.5px solid rgba(204,0,0,.25);pointer-events:none}
.s1{width:90px;height:90px;top:24%;left:8%;animation:float 9s ease-in-out infinite}
.s2{width:54px;height:54px;top:64%;right:12%;border-color:rgba(0,0,0,.12);animation:float 7s ease-in-out infinite .5s}
.s3{width:120px;height:120px;top:80%;left:18%;border-radius:50%;animation:float 11s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(-26px) rotate(18deg)}}

/* ===== Header ===== */
header{position:fixed;top:0;left:0;width:100%;z-index:100;padding:24px 0;transition:all .5s var(--ease)}
header.scrolled{padding:13px 0;background:rgba(255,255,255,.8);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between}
.logo{font-size:24px;font-weight:900;letter-spacing:.06em}
.logo span{color:var(--accent)}
.menu{display:flex;gap:30px;align-items:center}
.menu a{font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--fg);position:relative}
.menu a:not(.cta)::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--accent);transition:width .3s var(--ease)}
.menu a:not(.cta):hover::after,.menu a.current::after{width:100%}
.menu a.current{color:var(--accent)}
.menu .cta{background:var(--accent);color:#fff;padding:10px 22px;border-radius:4px;font-size:12px;transition:.3s}
.menu .cta:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(204,0,0,.3)}
.burger{display:none;flex-direction:column;gap:6px;cursor:pointer}
.burger span{width:26px;height:2px;background:var(--fg)}

/* ===== Hero (top page) ===== */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden}
.hero-inner{position:relative;z-index:2}
.hero .sub{display:inline-flex;align-items:center;gap:12px;font-size:13px;color:var(--accent);font-weight:700;letter-spacing:.22em;margin-bottom:26px;opacity:0;transform:translateY(20px);animation:rise 1s var(--ease) .2s forwards}
.hero .sub::before{content:"";width:30px;height:2px;background:var(--accent)}
.hero h1{font-size:clamp(40px,8vw,96px);line-height:1.1;font-weight:900;letter-spacing:.01em}
.hero h1 .l{display:block;overflow:hidden;padding:2px 0}
.hero h1 .l i{display:block;font-style:normal;transform:translateY(110%);animation:rise 1.1s var(--ease) forwards}
.hero h1 .l:nth-child(1) i{animation-delay:.35s}.hero h1 .l:nth-child(2) i{animation-delay:.5s}.hero h1 .l:nth-child(3) i{animation-delay:.65s}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero p.lead{margin-top:32px;max-width:520px;color:var(--muted);font-size:16px;font-weight:500;opacity:0;transform:translateY(20px);animation:rise 1s var(--ease) .95s forwards}
.hero-mark{position:absolute;right:-2%;bottom:6%;font-family:"Oswald",sans-serif;font-size:clamp(80px,20vw,260px);font-weight:700;color:rgba(0,0,0,.035);z-index:1;letter-spacing:.02em;white-space:nowrap;user-select:none}
.hero .scrolldown{position:absolute;bottom:36px;left:50%;transform:translateX(-50%);font-size:11px;letter-spacing:.25em;color:var(--muted);text-align:center;z-index:3;opacity:0;animation:fade 1s ease 1.4s forwards}
.hero .scrolldown::after{content:"";display:block;width:1px;height:46px;margin:12px auto 0;background:linear-gradient(var(--accent),transparent);animation:line 1.8s ease-in-out infinite}
@keyframes rise{to{transform:translateY(0);opacity:1}}
@keyframes fade{to{opacity:1}}
@keyframes line{0%,100%{transform:scaleY(.3);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}}

/* ===== Page hero (下層) ===== */
.page-hero{position:relative;padding:200px 0 80px;overflow:hidden}
.page-hero .mark{position:absolute;right:0;top:48%;transform:translateY(-50%);font-family:"Oswald",sans-serif;font-size:clamp(70px,16vw,200px);font-weight:700;color:rgba(0,0,0,.04);white-space:nowrap;z-index:0}
.page-hero .inner{position:relative;z-index:2}
.page-hero .en-title{font-family:"Oswald",sans-serif;font-size:clamp(40px,7vw,78px);font-weight:700;color:var(--accent);line-height:1;opacity:0;transform:translateY(24px);animation:rise .9s var(--ease) .15s forwards}
.page-hero h1{font-size:clamp(20px,3vw,26px);font-weight:700;margin-top:14px;opacity:0;transform:translateY(24px);animation:rise .9s var(--ease) .3s forwards}
.breadcrumb{margin-top:26px;font-size:12px;color:var(--muted);letter-spacing:.06em}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb span{color:var(--accent);margin:0 8px}

/* ===== marquee ===== */
.marquee{padding:22px 0;background:var(--accent);overflow:hidden;white-space:nowrap}
.marquee .track{display:inline-block;animation:scrollx 26s linear infinite;font-family:"Oswald",sans-serif;font-size:30px;font-weight:700;color:#fff;letter-spacing:.06em}
.marquee .track span{margin:0 26px;opacity:.95}
.marquee .track span b{color:rgba(255,255,255,.45)}
@keyframes scrollx{to{transform:translateX(-50%)}}

/* ===== Section commons ===== */
section.block{padding:120px 0;position:relative}
.sec-head{margin-bottom:60px}
.sec-head.center{text-align:center}
.sec-head.center .label{justify-content:center}
.sec-head .label{display:flex;align-items:center;gap:14px;font-size:12px;color:var(--accent);font-weight:700;letter-spacing:.2em;margin-bottom:18px;font-family:"Oswald",sans-serif}
.sec-head .label::before{content:"";width:34px;height:2px;background:var(--accent)}
.sec-head.center .label::before{display:none}
.sec-head h2{font-size:clamp(28px,4.4vw,46px);font-weight:900;line-height:1.3}
.sec-head h2 small{display:block;font-size:14px;color:var(--muted);font-weight:500;letter-spacing:.18em;margin-top:14px}

.reveal{opacity:0;transform:translateY(40px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.1s}.reveal.d2{transition-delay:.2s}.reveal.d3{transition-delay:.3s}.reveal.d4{transition-delay:.4s}

/* ===== About ===== */
.about{background:var(--bg-soft)}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.about-grid .copy h3{font-size:27px;line-height:1.6;font-weight:900;margin-bottom:26px}
.about-grid .copy h3 b{color:var(--accent)}
.about-grid .copy p{color:var(--muted);margin-bottom:18px;font-weight:500}
.about-visual{aspect-ratio:4/5;border-radius:14px;border:1px solid var(--line);position:relative;overflow:hidden;background:linear-gradient(135deg,#fff,var(--bg-soft));display:flex;align-items:center;justify-content:center}
.about-visual::before{content:"IMAGE";color:#c3c3cc;font-family:"Oswald",sans-serif;letter-spacing:.25em;font-size:14px}
.about-visual::after{content:"";position:absolute;width:160px;height:160px;background:var(--accent-soft);border-radius:50%;top:-40px;left:-40px}

/* image placeholder generic */
.imgph{position:relative;border-radius:14px;border:1px solid var(--line);background:linear-gradient(135deg,#fff,var(--bg-soft));display:flex;align-items:center;justify-content:center;overflow:hidden}
.imgph::before{content:"IMAGE";color:#c8c8d0;font-family:"Oswald",sans-serif;letter-spacing:.25em;font-size:13px}

/* ===== Cards (service) ===== */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{border:1px solid var(--line);border-radius:14px;padding:40px 32px;background:#fff;position:relative;overflow:hidden;transition:transform .5s var(--ease),box-shadow .5s}
.card::before{content:"";position:absolute;left:0;top:0;width:100%;height:4px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .5s var(--ease)}
.card:hover{transform:translateY(-8px);box-shadow:0 22px 50px rgba(0,0,0,.1)}
.card:hover::before{transform:scaleX(1)}
.card .no{font-family:"Oswald",sans-serif;font-size:15px;color:var(--accent);letter-spacing:.1em}
.card h3{font-size:21px;font-weight:900;margin:16px 0 14px}
.card p{color:var(--muted);font-size:14.5px;font-weight:500}
.card .arrow{margin-top:24px;font-size:13px;color:var(--accent);font-weight:700;letter-spacing:.05em}

/* ===== Stats ===== */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center}
.stat .num{font-family:"Oswald",sans-serif;font-size:clamp(44px,6vw,74px);font-weight:700;color:var(--accent);line-height:1}
.stat .num small{font-size:24px;margin-left:4px}
.stat .cap{margin-top:14px;color:var(--muted);font-size:13px;font-weight:700;letter-spacing:.12em;font-family:"Oswald",sans-serif}

/* ===== Works ===== */
.works-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.work{position:relative;aspect-ratio:4/3;border-radius:12px;overflow:hidden;border:1px solid var(--line);background:var(--bg-soft);display:flex;align-items:flex-end;cursor:pointer}
.work .ph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#cfcfd6;font-family:"Oswald",sans-serif;font-size:30px;font-weight:700;letter-spacing:.2em;transition:transform .6s var(--ease)}
.work .meta{position:relative;z-index:2;padding:20px;width:100%;background:linear-gradient(transparent,rgba(255,255,255,.92))}
.work .meta .tag{font-size:11px;color:var(--accent);font-weight:700;letter-spacing:.14em;font-family:"Oswald",sans-serif}
.work .meta h4{font-size:16px;margin-top:4px;font-weight:700}
.work:hover .ph{transform:scale(1.06)}
.work::after{content:"";position:absolute;inset:0;background:var(--accent);opacity:0;transition:.4s}
.work:hover::after{opacity:.06}

/* ===== filter tabs ===== */
.tabs{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:46px}
.tabs button{border:1px solid var(--line);background:#fff;padding:9px 22px;border-radius:40px;font-size:13px;font-weight:700;cursor:pointer;transition:.3s;font-family:inherit;color:var(--fg)}
.tabs button.active,.tabs button:hover{background:var(--accent);color:#fff;border-color:var(--accent)}

/* ===== service alternating rows ===== */
.srow{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;margin-bottom:90px}
.srow:nth-child(even) .srow-img{order:2}
.srow:last-child{margin-bottom:0}
.srow-img{aspect-ratio:16/11}
.srow .no{font-family:"Oswald",sans-serif;font-size:15px;color:var(--accent);letter-spacing:.1em}
.srow h3{font-size:26px;font-weight:900;margin:12px 0 18px}
.srow p{color:var(--muted);margin-bottom:14px}
.srow ul{list-style:none;margin-top:18px}
.srow ul li{position:relative;padding-left:22px;color:var(--muted);margin-bottom:8px;font-size:14.5px}
.srow ul li::before{content:"";position:absolute;left:0;top:12px;width:9px;height:9px;background:var(--accent);border-radius:2px}

/* ===== flow steps ===== */
.flow{counter-reset:step;display:grid;gap:20px}
.flow .step{display:grid;grid-template-columns:90px 1fr;gap:24px;align-items:start;padding:28px 30px;border:1px solid var(--line);border-radius:12px;background:#fff;position:relative}
.flow .step .n{counter-increment:step;font-family:"Oswald",sans-serif;font-size:42px;font-weight:700;color:var(--accent-soft)}
.flow .step .n::before{content:"0" counter(step);color:var(--accent)}
.flow .step h4{font-size:18px;font-weight:900;margin-bottom:8px}
.flow .step p{color:var(--muted);font-size:14.5px}

/* ===== mission / value grid ===== */
.mvv{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.mvv .item{border:1px solid var(--line);border-radius:14px;padding:40px 30px;background:#fff;text-align:center}
.mvv .item .ic{width:60px;height:60px;margin:0 auto 22px;border-radius:50%;background:var(--accent-soft);display:flex;align-items:center;justify-content:center;color:var(--accent);font-family:"Oswald",sans-serif;font-weight:700}
.mvv .item h3{font-size:20px;font-weight:900;margin-bottom:12px}
.mvv .item p{color:var(--muted);font-size:14px}

/* ===== timeline (history) ===== */
.timeline{position:relative;margin-left:8px;padding-left:36px;border-left:2px solid var(--line)}
.timeline .ti{position:relative;padding-bottom:42px}
.timeline .ti:last-child{padding-bottom:0}
.timeline .ti::before{content:"";position:absolute;left:-44px;top:4px;width:14px;height:14px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 5px var(--accent-soft)}
.timeline .ti .yr{font-family:"Oswald",sans-serif;font-size:20px;font-weight:700;color:var(--accent)}
.timeline .ti p{color:var(--muted);margin-top:4px}

/* ===== Company table ===== */
.company{background:var(--bg-soft)}
.table{width:100%;border-collapse:collapse}
.table th,.table td{text-align:left;padding:22px 8px;border-bottom:1px solid var(--line);font-size:15px;vertical-align:top}
.table th{width:200px;color:var(--accent);font-weight:700;letter-spacing:.08em}
.table td{color:var(--muted);font-weight:500}

/* ===== news list ===== */
.news-list{border-top:1px solid var(--line)}
.news-item{display:grid;grid-template-columns:140px 120px 1fr auto;gap:22px;align-items:center;padding:26px 8px;border-bottom:1px solid var(--line);transition:background .3s}
.news-item:hover{background:var(--bg-soft)}
.news-item .date{font-family:"Oswald",sans-serif;color:var(--muted);font-size:14px;letter-spacing:.06em}
.news-item .cat{font-size:11px;font-weight:700;color:var(--accent);border:1px solid var(--accent);border-radius:40px;padding:3px 12px;text-align:center;letter-spacing:.08em}
.news-item .ttl{font-weight:700;font-size:15.5px}
.news-item .go{color:var(--accent);font-weight:700}

/* pagination */
.pager{display:flex;justify-content:center;gap:10px;margin-top:50px}
.pager a{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:8px;font-family:"Oswald",sans-serif;font-weight:600;transition:.3s}
.pager a.active,.pager a:hover{background:var(--accent);color:#fff;border-color:var(--accent)}

/* ===== form ===== */
.form{max-width:760px;margin:0 auto}
.form .row{margin-bottom:26px}
.form label{display:block;font-weight:700;font-size:14px;margin-bottom:10px}
.form label .req{color:var(--accent);font-size:12px;margin-left:8px}
.form input,.form textarea,.form select{width:100%;padding:15px 18px;border:1px solid var(--line);border-radius:8px;font-family:inherit;font-size:15px;background:#fff;transition:border-color .3s}
.form input:focus,.form textarea:focus,.form select:focus{outline:none;border-color:var(--accent)}
.form textarea{min-height:160px;resize:vertical}
.form .submit{text-align:center;margin-top:36px}
.form-note{max-width:760px;margin:0 auto 40px;padding:18px 22px;background:var(--accent-soft);border-left:3px solid var(--accent);border-radius:6px;font-size:13.5px;color:var(--muted)}

/* ===== Contact CTA ===== */
.contact{text-align:center;position:relative;overflow:hidden}
.contact .big{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);font-family:"Oswald",sans-serif;font-size:clamp(90px,22vw,280px);font-weight:700;color:var(--accent-soft);z-index:0;white-space:nowrap}
.contact .inner{position:relative;z-index:2}
.contact h2{font-size:clamp(30px,5vw,56px);font-weight:900;margin-bottom:24px}
.contact p{color:var(--muted);margin-bottom:42px;font-weight:500}
.btn{display:inline-flex;align-items:center;gap:12px;background:var(--accent);color:#fff;padding:18px 46px;border-radius:6px;font-weight:700;letter-spacing:.06em;transition:.4s;cursor:pointer;border:none;font-family:inherit;font-size:15px}
.btn:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(204,0,0,.32)}
.btn.ghost{background:#fff;color:var(--accent);border:1px solid var(--accent)}
.btn.ghost:hover{background:var(--accent);color:#fff}

/* ===== Footer ===== */
footer{padding:60px 0 40px;border-top:1px solid var(--line);background:#fff}
.foot{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.foot .logo{font-size:22px}
.foot .fmenu{display:flex;gap:26px;font-size:13px;font-weight:700;color:var(--muted);flex-wrap:wrap}
.foot .fmenu a:hover{color:var(--accent)}
.copy-s{margin-top:30px;font-size:12px;color:#9a9aa2;letter-spacing:.08em;font-family:"Oswald",sans-serif}

.note{position:fixed;left:14px;bottom:14px;z-index:200;background:var(--accent);color:#fff;font-size:11px;padding:7px 12px;border-radius:6px;font-weight:700;letter-spacing:.04em;box-shadow:0 6px 18px rgba(204,0,0,.3)}

/* ===== Responsive ===== */
@media(max-width:860px){
  .menu{display:none}.burger{display:flex}
  .about-grid,.cards,.stat-grid,.works-grid,.mvv,.srow{grid-template-columns:1fr}
  .srow:nth-child(even) .srow-img{order:0}
  .stat-grid{gap:46px}
  section.block{padding:80px 0}
  .page-hero{padding:150px 0 60px}
  .table th{width:120px}
  .shape{display:none}
  .news-item{grid-template-columns:1fr auto;gap:8px 16px}
  .news-item .ttl{grid-column:1/-1}
}