/*
 * style.css — 中村食品工場（インペリアルグループ／株式会社SSY）
 * デザイン：清潔感のあるティール×アイボリー。食品工場らしい信頼感・衛生感を表現。
 */
:root{
  --teal-800:#0b5a56; --teal-700:#0f766e; --teal-600:#14968c; --teal-050:#eaf6f4;
  --amber:#c9791f;
  --ink-900:#1b201f; --ink-700:#3b423f; --ink-600:#5d655f; --ink-400:#8a938c;
  --line:#e2e8e4; --paper:#f8faf8; --paper-2:#eef3ef; --white:#fff;
  --serif:"Noto Serif JP","Yu Mincho",serif;
  --sans:"Noto Sans JP","Hiragino Kaku Gothic ProN","Meiryo",sans-serif;
  --wrap:1120px; --header-h:74px; --radius:12px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--sans);color:var(--ink-900);background:var(--paper);line-height:1.85;letter-spacing:.02em;font-size:16px;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:.2s}
ul{list-style:none}
.wrap{width:min(var(--wrap),92%);margin-inline:auto}

.section{padding:clamp(3.25rem,7vw,5.75rem) 0}
.section--tint{background:var(--paper-2)}
.section--ink{background:var(--teal-800);color:#eaf3f1}
.section-head{margin-bottom:clamp(1.75rem,4vw,3rem);text-align:center}
.section-head .en{display:block;font-size:.72rem;letter-spacing:.3em;color:var(--teal-600);font-weight:700;margin-bottom:.5rem}
.section-head .ja{font-family:var(--serif);font-size:clamp(1.5rem,3.4vw,2.15rem);font-weight:600;color:var(--ink-900);line-height:1.5}
.section-head .lead{margin:1rem auto 0;color:var(--ink-600);max-width:680px}
.section--ink .section-head .ja{color:#fff}
.section--ink .section-head .lead{color:#cfe3df}

.btn{display:inline-flex;align-items:center;gap:.6rem;font-weight:700;font-size:.94rem;padding:.95rem 2.1rem;border-radius:6px;border:2px solid var(--teal-700);color:var(--teal-700);background:transparent;cursor:pointer;transition:.25s;line-height:1.4}
.btn:hover{background:var(--teal-700);color:#fff}
.btn--fill{background:var(--teal-700);color:#fff;border-color:var(--teal-700)}
.btn--fill:hover{background:var(--teal-800);border-color:var(--teal-800)}
.btn--ghost{border-color:rgba(255,255,255,.7);color:#fff}
.btn--ghost:hover{background:#fff;color:var(--teal-800);border-color:#fff}
.btn .arrow{transition:transform .2s}
.btn:hover .arrow{transform:translateX(4px)}

/* ヘッダー */
.header{position:fixed;top:0;left:0;right:0;z-index:100;height:var(--header-h);display:flex;align-items:center;background:rgba(255,255,255,.96);box-shadow:0 1px 0 var(--line);backdrop-filter:saturate(1.2) blur(4px)}
.header .wrap{display:flex;align-items:center;justify-content:space-between;width:min(var(--wrap),95%)}
.brand{display:flex;align-items:center;gap:.7rem;color:var(--ink-900)}
.brand__mark{width:38px;height:38px;flex:none;border-radius:10px;background:var(--teal-700);color:#fff;display:grid;place-items:center;font-family:var(--serif);font-weight:700;font-size:1.05rem}
.brand__name{font-family:var(--serif);font-weight:600;font-size:1rem;line-height:1.25}
.brand__name small{display:block;font-family:var(--sans);font-size:.58rem;letter-spacing:.16em;color:var(--teal-600);font-weight:700}
.nav{display:flex;align-items:center;gap:1.6rem}
.nav a{color:var(--ink-700);font-size:.9rem;font-weight:500;position:relative;padding:.3rem 0}
.nav a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--teal-600);transition:width .25s}
.nav a:hover{color:var(--teal-700)}
.nav a:hover::after{width:100%}
.nav__cta{background:var(--teal-700);color:#fff!important;padding:.55rem 1.2rem!important;border-radius:6px}
.nav__cta::after{display:none}
.nav__cta:hover{background:var(--teal-800)}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;width:32px;height:24px;position:relative}
.nav-toggle span{position:absolute;left:0;width:100%;height:2px;background:var(--ink-900);transition:.3s}
.nav-toggle span:nth-child(1){top:1px}.nav-toggle span:nth-child(2){top:11px}.nav-toggle span:nth-child(3){top:21px}
.nav-toggle.open span:nth-child(1){top:11px;transform:rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){top:11px;transform:rotate(-45deg)}

/* ヒーロー */
.hero{position:relative;min-height:86vh;display:flex;align-items:center;color:#fff;overflow:hidden;background:linear-gradient(150deg,#0a3f3c 0%,var(--teal-800) 55%,var(--teal-600) 120%)}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(900px 520px at 84% 12%,rgba(201,121,31,.25),transparent 62%)}
.hero__inner{position:relative;z-index:2;padding-top:var(--header-h)}
.hero__eyebrow{font-size:.82rem;letter-spacing:.22em;color:#bfe6df;margin-bottom:1.3rem;font-weight:700}
.hero h1{font-family:var(--serif);font-weight:600;font-size:clamp(1.9rem,4.8vw,3.2rem);line-height:1.55;margin-bottom:1.5rem;white-space:pre-line}
.hero__lead{max-width:640px;color:#dcece8;font-size:clamp(.98rem,1.6vw,1.08rem);margin-bottom:2.4rem}
.hero__actions{display:flex;gap:1rem;flex-wrap:wrap}

/* 現場ギャラリー */
.gallery{display:grid;gap:1.1rem;grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.gallery__item{border-radius:var(--radius);overflow:hidden;aspect-ratio:4/3;background:var(--paper-2)}
.gallery__item img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.gallery__item:hover img{transform:scale(1.04)}

/* カード共通 */
.cards{display:grid;gap:1.4rem;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:2rem 1.7rem;transition:.25s;position:relative;overflow:hidden}
.card::before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:var(--teal-600);transform:scaleX(0);transform-origin:left;transition:transform .3s}
.card:hover{transform:translateY(-4px);box-shadow:0 16px 36px rgba(11,90,86,.12)}
.card:hover::before{transform:scaleX(1)}
.card__ic{font-size:2rem;margin-bottom:.9rem;line-height:1}
.card h3{font-family:var(--serif);font-size:1.1rem;color:var(--ink-900);margin-bottom:.7rem}
.card p{font-size:.9rem;color:var(--ink-600)}
.card__tag{display:inline-block;font-size:.7rem;font-weight:700;letter-spacing:.06em;padding:.25rem .7rem;border-radius:999px;margin-bottom:.8rem}
.card__tag--done{background:var(--teal-050);color:var(--teal-700)}
.card__tag--plan{background:#fbeedd;color:var(--amber)}

/* CCP／衛生管理 数値バー */
.stbar{display:grid;grid-template-columns:repeat(4,1fr)}
.st{padding:2rem 1rem;text-align:center;border-left:1px solid rgba(255,255,255,.14)}
.st:first-child{border-left:0}
.st__n{font-family:var(--serif);font-size:clamp(1.05rem,2vw,1.35rem);color:#bfe6df;line-height:1.3;font-weight:600}
.st__l{margin-top:.6rem;font-size:.78rem;color:#cfe3df}

/* 製造品目 */
.tags{display:flex;flex-wrap:wrap;gap:.6rem;justify-content:center;max-width:820px;margin:0 auto}
.tag{background:#fff;border:1px solid var(--line);border-radius:999px;padding:.55rem 1.2rem;font-size:.86rem;color:var(--ink-700)}

/* 会社概要テーブル */
.tbl{width:100%;border-collapse:collapse;max-width:760px;margin-inline:auto;background:#fff;border:1px solid var(--line)}
.tbl th,.tbl td{text-align:left;padding:1.1rem 1.5rem;border-bottom:1px solid var(--line);font-size:.92rem;vertical-align:top}
.tbl tr:last-child th,.tbl tr:last-child td{border-bottom:0}
.tbl th{width:30%;font-family:var(--serif);color:var(--teal-700);font-weight:600;background:var(--teal-050)}

/* 帯CTA */
.cta{background:linear-gradient(120deg,var(--teal-800),#0a3f3c);color:#fff;text-align:center}
.cta h2{font-family:var(--serif);font-size:clamp(1.5rem,3.4vw,2.2rem);margin-bottom:1rem}
.cta p{color:#dcece8;margin-bottom:1.5rem;max-width:600px;margin-inline:auto}

/* reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s,transform .7s}
.reveal.in{opacity:1;transform:none}

/* フッター */
.footer{background:var(--teal-800);color:#bcd8d3;padding:clamp(2.5rem,5vw,3.5rem) 0 2rem;font-size:.88rem;text-align:center}
.footer__mark{font-family:var(--serif);font-size:1.3rem;color:#fff}
.footer__nav{display:flex;gap:1.4rem;justify-content:center;flex-wrap:wrap;margin:1.2rem 0}
.footer__nav a:hover{color:#fff}
.footer small{display:block;margin-top:1rem;color:#8fb4ad;font-size:.78rem}

@media(max-width:900px){.stbar{grid-template-columns:1fr 1fr}.st:nth-child(3){border-left:0}}
@media(max-width:760px){
  .nav{position:fixed;inset:var(--header-h) 0 auto 0;flex-direction:column;align-items:flex-start;gap:0;background:#fff;padding:.5rem 6%;transform:translateY(-140%);transition:transform .35s;box-shadow:0 20px 40px rgba(0,0,0,.12)}
  .nav.open{transform:translateY(0)}
  .nav a{width:100%;padding:1rem 0;border-bottom:1px solid var(--line)}
  .nav-toggle{display:block}
  .stbar{grid-template-columns:1fr}.st{border-left:0}
}