/* ==========================================================================
   TANAKA SANGYO — EN corporate site
   Single stylesheet. Tokens in :root. Mobile-first, additive breakpoints.
   ========================================================================== */

:root{
  --c-ink:#1a1a1a;
  --c-black:#000;
  --c-paper:#fff;
  --c-cream:#fefbf6;
  --c-accent:#e35959;
  --c-blue:#3f8db4;
  --c-blue-pale:#eff8fe;
  --c-gray:#898989;
  --c-muted:#5b5b5b;
  --c-line:rgba(0,0,0,.1);
  /* text-safe variants (>=4.5:1 on white/cream/pale) */
  --c-blue-text:#2e6e8e;
  --c-accent-text:#c43d3d;
  --c-gray-text:#6f6f6f;

  --font-serif:"EB Garamond",Georgia,serif;
  --font-sans:"Inter","Helvetica Neue",system-ui,sans-serif;
  --font-label:"Montserrat",sans-serif;

  --container:1280px;
  --gutter:24px;
  --section-pad:clamp(80px,10vw,160px);
  --header-h:84px;

  --ease-out:cubic-bezier(0.16,1,0.3,1);
  --dur:600ms;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:clamp(1rem,1.05vw,1.0625rem);
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-paper);
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%;display:block}
a{color:inherit}
ul,ol{list-style:none;margin:0;padding:0}
p{margin:0 0 1.25em}
p:last-child{margin-bottom:0}
button{font:inherit;background:none;border:0;cursor:pointer;color:inherit}
input,textarea{font:inherit}
h1,h2,h3,h4{
  font-family:var(--font-serif);
  font-weight:500;
  margin:0 0 .5em;
  color:var(--c-ink);
}
h1{font-size:clamp(2.4rem,6vw,4.5rem);line-height:1.08;letter-spacing:-0.02em}
h2{font-size:clamp(1.8rem,3.5vw,2.75rem);line-height:1.16;letter-spacing:-0.01em}
h3{font-size:clamp(1.3rem,2vw,1.6rem);line-height:1.3}
h4{font-size:1.05rem}

/* ---------- fonts (self-hosted) ---------- */
@font-face{font-family:"EB Garamond";src:url("../fonts/eb-garamond-var.woff2") format("woff2");font-weight:400 600;font-style:normal;font-display:swap}
@font-face{font-family:"Inter";src:url("../fonts/inter-var.woff2") format("woff2");font-weight:400 600;font-style:normal;font-display:swap}
@font-face{font-family:"Montserrat";src:url("../fonts/montserrat-var.woff2") format("woff2");font-weight:400 600;font-style:normal;font-display:swap}

/* ---------- layout helpers ---------- */
.container{max-width:var(--container);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:var(--section-pad)}
.section--cream{background:var(--c-cream)}
.section--pale{background:var(--c-blue-pale)}
.section-head{max-width:44rem;margin-bottom:clamp(40px,6vw,72px)}
.section-head--wide{max-width:62rem}
.kicker{
  display:inline-block;
  font-family:var(--font-label);
  font-size:.75rem;
  font-weight:600;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--c-blue-text);
  margin-bottom:1em;
}
.lede{
  font-size:1.0625rem;
  color:var(--c-muted);
  max-width:56ch;
}
.prose{max-width:62ch}
.prose p{margin-bottom:1.4em}
.skip-link{
  position:absolute;left:12px;top:-60px;z-index:1000;
  background:var(--c-ink);color:#fff;padding:12px 20px;
  font-family:var(--font-label);font-size:.8125rem;letter-spacing:.06em;text-decoration:none;
  transition:top .2s var(--ease-out);
}
.skip-link:focus{top:12px}
.visually-hidden{
  position:absolute!important;width:1px;height:1px;overflow:hidden;
  clip:rect(0,0,0,0);white-space:nowrap;border:0;padding:0;margin:-1px;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-label);font-size:.8125rem;font-weight:600;
  letter-spacing:.1em;text-transform:uppercase;
  padding:16px 30px;border:1px solid currentColor;
  text-decoration:none;white-space:nowrap;
  transition:background .25s var(--ease-out),color .25s var(--ease-out),border-color .25s var(--ease-out);
}
.btn:hover,.btn:focus-visible{background:var(--c-accent-text);border-color:var(--c-accent-text);color:#fff}
.btn--accent{background:var(--c-accent-text);border-color:var(--c-accent-text);color:#fff}
.btn--accent:hover,.btn--accent:focus-visible{background:#a83434;border-color:#a83434}
.btn--ghost-light{color:#fff}
.btn--ghost-light:hover{color:#fff}
.btn--block{width:100%;justify-content:center}
.btn[disabled]{opacity:.45;cursor:not-allowed;pointer-events:none}

/* ---------- header / nav ---------- */
.site-header{
  position:fixed;inset-inline:0;top:0;z-index:100;
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease-out),border-color .3s var(--ease-out),backdrop-filter .3s var(--ease-out);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-color:var(--c-line);
}
.site-header.is-scrolled .logo,.site-header.is-scrolled .main-nav a,.site-header.is-scrolled .lang-switch a,.site-header.is-scrolled .lang-switch span,.site-header.is-scrolled .nav-toggle{color:var(--c-ink)}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:var(--header-h);
  max-width:var(--container);margin-inline:auto;padding-inline:var(--gutter);
}
.logo{
  font-family:var(--font-serif);font-size:1.3rem;letter-spacing:.01em;
  text-decoration:none;color:#fff;transition:color .3s var(--ease-out);
}
.logo small{display:block;font-family:var(--font-label);font-size:.6875rem;letter-spacing:.16em;text-transform:uppercase;color:currentColor;opacity:.78;margin-top:3px}
.main-nav{display:none}
.main-nav ul{display:flex;gap:28px;align-items:center}
.main-nav a{
  font-family:var(--font-label);font-size:.75rem;font-weight:600;
  letter-spacing:.09em;text-transform:uppercase;
  text-decoration:none;color:#fff;position:relative;padding-block:6px;
  transition:color .3s var(--ease-out);
}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--c-accent);
  transition:width .25s var(--ease-out);
}
.main-nav a:hover::after,.main-nav a:focus-visible::after,.main-nav a.is-current::after{width:100%}
.lang-switch{display:none;align-items:center;gap:8px;font-family:var(--font-label);font-size:.6875rem;letter-spacing:.08em}
.lang-switch a,.lang-switch span{text-decoration:none;color:#fff;transition:color .3s var(--ease-out)}
.lang-switch span[aria-current]{font-weight:600;text-decoration:underline;text-underline-offset:3px}
.lang-switch em{font-style:normal;opacity:.4}
.nav-toggle{
  display:flex;flex-direction:column;justify-content:center;gap:5px;
  width:40px;height:40px;color:#fff;transition:color .3s var(--ease-out);
}
.nav-toggle span{display:block;width:22px;height:1.5px;background:currentColor;transition:transform .3s var(--ease-out),opacity .3s var(--ease-out)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
.nav-toggle[aria-expanded="true"]{color:var(--c-ink)}

.mobile-nav{
  position:fixed;inset:0;z-index:90;background:var(--c-cream);
  display:flex;flex-direction:column;justify-content:center;
  padding:var(--header-h) var(--gutter) 40px;
  opacity:0;visibility:hidden;transform:translateY(-12px);
  transition:opacity .35s var(--ease-out),transform .35s var(--ease-out),visibility 0s linear .35s;
}
.mobile-nav.is-open{opacity:1;visibility:visible;transform:translateY(0);transition:opacity .35s var(--ease-out),transform .35s var(--ease-out)}
.mobile-nav ul{display:flex;flex-direction:column;gap:6px}
.mobile-nav li{opacity:0;transform:translateY(14px);transition:opacity .4s var(--ease-out),transform .4s var(--ease-out)}
.mobile-nav.is-open li{opacity:1;transform:translateY(0)}
.mobile-nav a{
  font-family:var(--font-serif);font-size:clamp(1.5rem,7vw,2.25rem);
  text-decoration:none;color:var(--c-ink);display:inline-block;padding:8px 0;
}
.mobile-nav .lang-switch{display:flex;margin-top:32px}
.mobile-nav .lang-switch a,.mobile-nav .lang-switch span{color:var(--c-ink)}
body.nav-open{overflow:hidden}

@media (min-width:1024px){
  .main-nav{display:block}
  .lang-switch{display:flex}
  .nav-toggle{display:none}
}

/* ---------- hero ---------- */
.hero{position:relative;min-height:100svh;min-height:100vh;overflow:hidden;display:flex;align-items:flex-end}
.hero-media{position:absolute;inset:0}
.hero-media picture,.hero-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-media img{animation:kenburns 20s var(--ease-out) infinite alternate}
.hero::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(0,0,0,.05) 0%,rgba(0,0,0,.15) 45%,rgba(0,0,0,.62) 100%);
}
.hero-content{position:relative;z-index:2;color:#fff;width:100%;padding-block:calc(var(--header-h) + 40px) clamp(56px,9vw,110px)}
.hero-content h1{color:#fff;margin-bottom:.4em}
.hero .kicker{color:#fff9ec}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:2em}
@keyframes kenburns{from{transform:scale(1)}to{transform:scale(1.06)}}

/* ---------- page hero (subpages) ---------- */
.page-hero{
  position:relative;padding:calc(var(--header-h) + 64px) 0 64px;
  background:var(--c-ink);color:#fff;overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-10%;top:-30%;width:60%;aspect-ratio:1/1;
  background:radial-gradient(circle,rgba(227,89,89,.16),transparent 70%);
}
.page-hero h1{color:#fff}
.breadcrumb{
  display:flex;flex-wrap:wrap;gap:8px;align-items:center;
  font-family:var(--font-label);font-size:.6875rem;letter-spacing:.08em;text-transform:uppercase;
  color:rgba(255,255,255,.55);margin-bottom:24px;position:relative;z-index:1;
}
.breadcrumb a{color:rgba(255,255,255,.85);text-decoration:none}
.breadcrumb a:hover{color:var(--c-accent-text)}
.breadcrumb span[aria-current]{color:#fff}

/* ---------- media / pictures ---------- */
.media{overflow:hidden;background:var(--c-cream);position:relative}
.media img{width:100%;height:100%;object-fit:cover;display:block}
.ratio-16-9{aspect-ratio:16/9}
.ratio-4-3{aspect-ratio:4/3}
.ratio-3-4{aspect-ratio:3/4}
.ratio-1-1{aspect-ratio:1/1}

/* ---------- about ---------- */
.about-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:var(--gutter);align-items:start}
.about-media-a{grid-column:1/13}
.about-text{grid-column:1/13;margin-top:32px}
.about-media-b{grid-column:1/13;margin-top:32px;max-width:340px}
.about-illust{width:56px;height:56px;color:var(--c-accent);margin-bottom:28px}
.about-copy{font-family:var(--font-serif);font-size:clamp(1.3rem,2.4vw,1.75rem);line-height:1.5;color:var(--c-ink);margin-bottom:.9em}
@media (min-width:1024px){
  .about-media-a{grid-column:1/8}
  .about-text{grid-column:8/13;margin-top:clamp(60px,10vw,120px)}
  .about-media-b{grid-column:1/6;margin-top:-72px;margin-left:8%}
}

/* ---------- strengths ---------- */
.strengths{display:grid;grid-template-columns:repeat(12,1fr);gap:var(--gutter)}
.strengths-mark{grid-column:1/13;font-family:var(--font-serif);font-size:clamp(3.5rem,10vw,7rem);line-height:1;color:var(--c-blue-pale);margin-bottom:-.3em}
.strengths-body{grid-column:1/13}
@media (min-width:1024px){
  .strengths-mark{grid-column:1/4}
  .strengths-body{grid-column:4/12}
}

/* ---------- company brief / profile ---------- */
.profile{display:grid;grid-template-columns:1fr;gap:0}
.profile dt{
  font-family:var(--font-label);font-size:.6875rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;
  color:var(--c-gray-text);margin-bottom:4px;
}
.profile dd{margin:0 0 20px}
.profile > div{padding-block:16px;border-bottom:1px solid var(--c-line)}
.profile > div:first-child{padding-top:0}
@media (min-width:768px){
  .profile > div{display:grid;grid-template-columns:200px 1fr;gap:24px;align-items:baseline}
  .profile dt{margin-bottom:0}
  .profile dd{margin:0}
}
.company-brief-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:var(--gutter)}
.company-brief-media{grid-column:1/13}
.company-brief-body{grid-column:1/13;margin-top:32px}
@media (min-width:1024px){
  .company-brief-media{grid-column:1/6}
  .company-brief-body{grid-column:7/13}
}

/* ---------- company detail blocks ---------- */
.detail-block{display:grid;grid-template-columns:repeat(12,1fr);gap:var(--gutter);align-items:center}
.detail-block + .detail-block{margin-top:clamp(64px,9vw,120px)}
.detail-media{grid-column:1/13}
.detail-media-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.detail-media-grid .media:first-child{grid-column:1/3}
.detail-body{grid-column:1/13;margin-top:32px}
@media (min-width:1024px){
  .detail-media{grid-column:1/6}
  .detail-body{grid-column:7/13;margin-top:0}
  .detail-block.is-reverse .detail-media{grid-column:8/13;order:2}
  .detail-block.is-reverse .detail-body{grid-column:1/7;order:1}
}
.map-frame{border:1px solid var(--c-line);aspect-ratio:16/9;overflow:hidden;margin-top:40px}
.map-frame iframe{width:100%;height:100%;border:0}

/* ---------- products grid ---------- */
.product-grid{display:grid;grid-template-columns:1fr;gap:var(--gutter)}
.product-card{text-decoration:none;color:inherit;display:block}
.product-card .media{margin-bottom:20px}
.product-card .media img{transition:transform .2s ease-out}
.product-card:hover .media img,.product-card:focus-visible .media img{transform:scale(1.04)}
.product-card h3{margin-bottom:.35em}
.product-card p{color:var(--c-muted);font-size:.9375rem;margin:0}
@media (min-width:768px){.product-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.product-grid{grid-template-columns:repeat(3,1fr)}}

.category-block{scroll-margin-top:calc(var(--header-h) + 16px)}
.category-block + .category-block{
  margin-top:clamp(72px,10vw,140px);padding-top:clamp(72px,10vw,140px);
  border-top:1px solid var(--c-line);
}
.category-index{
  font-family:var(--font-label);font-size:.75rem;font-weight:600;color:var(--c-gray-text);
  letter-spacing:.1em;margin-bottom:12px;
}
.category-gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:32px}
.category-gallery .media:first-child{grid-column:1/3}
@media (min-width:768px){.category-gallery{grid-template-columns:repeat(3,1fr)}.category-gallery .media:first-child{grid-column:auto}}

/* ---------- sustainability ---------- */
.sustain-grid{display:grid;grid-template-columns:1fr;gap:40px}
.sustain-item svg{width:36px;height:36px;color:var(--c-blue);margin-bottom:20px}
.bullet-list{margin-top:1em}
.bullet-list li{position:relative;padding-left:26px;margin-bottom:.9em}
.bullet-list li::before{content:"";position:absolute;left:0;top:.6em;width:8px;height:1px;background:var(--c-accent)}
@media (min-width:1024px){.sustain-grid{grid-template-columns:repeat(3,1fr);gap:var(--gutter)}}
.sustain-photos{display:grid;grid-template-columns:1fr;gap:var(--gutter);margin-top:clamp(40px,6vw,72px)}
@media (min-width:768px){.sustain-photos{grid-template-columns:repeat(3,1fr)}}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr;gap:var(--gutter)}
.contact-intro{margin-bottom:8px}
.contact-intro svg{width:44px;height:44px;color:var(--c-accent);margin-bottom:24px}
form.contact-form{max-width:44rem}
.field{margin-bottom:24px}
.field label{
  display:block;font-family:var(--font-label);font-size:.75rem;font-weight:600;
  letter-spacing:.06em;text-transform:uppercase;color:var(--c-muted);margin-bottom:8px;
}
.required{color:var(--c-accent-text);margin-left:2px}
.field input,.field textarea{
  width:100%;padding:14px 16px;border:1px solid var(--c-line);background:var(--c-paper);
  color:var(--c-ink);transition:border-color .2s var(--ease-out);
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--c-blue)}
.field textarea{min-height:140px;resize:vertical}
.field-hint{font-size:.8125rem;color:var(--c-gray-text);margin-top:6px}
.form-note{font-size:.9375rem;color:var(--c-muted);margin-top:1em}
.error-msg{display:none;color:var(--c-accent-text);font-size:.8125rem;margin-top:6px}
.field.has-error input,.field.has-error textarea{border-color:var(--c-accent)}
.field.has-error .error-msg{display:block}
.hp-field{position:absolute;left:-9999px;top:-9999px;width:1px;height:1px;overflow:hidden}
.form-privacy-note{font-size:.875rem;color:var(--c-muted);margin:8px 0 28px}
.form-privacy-note a{color:var(--c-blue-text);text-decoration:underline}
.form-step{display:none}
.form-step.is-active{display:block}
.confirm-table{width:100%;border-collapse:collapse;margin-bottom:28px}
.confirm-table th,.confirm-table td{
  text-align:left;padding:14px 0;border-bottom:1px solid var(--c-line);vertical-align:top;
}
.confirm-table th{
  width:180px;font-family:var(--font-label);font-size:.6875rem;font-weight:600;letter-spacing:.08em;
  text-transform:uppercase;color:var(--c-gray-text);
}
.form-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:8px}
.form-status[role="status"]{margin-top:16px;font-size:.9375rem}
.turnstile-wrap{margin:8px 0 28px}
.complete-icon{width:52px;height:52px;color:var(--c-accent);margin-bottom:24px}

/* ---------- footer ---------- */
.site-footer{background:var(--c-ink);color:#fff;padding-block:var(--section-pad)}
.footer-top{display:grid;grid-template-columns:1fr;gap:48px;margin-bottom:56px}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand svg{width:44px;height:44px;color:var(--c-accent);margin-bottom:20px}
.footer-brand address{font-style:normal;color:rgba(255,255,255,.6);font-size:.9375rem;line-height:1.8}
.footer-nav{display:grid;grid-template-columns:repeat(2,1fr);gap:32px}
.footer-nav h3{font-family:var(--font-label);font-size:.6875rem;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.5);font-weight:600;margin-bottom:16px}
.footer-nav ul{display:flex;flex-direction:column;gap:12px}
.footer-nav a{color:rgba(255,255,255,.85);text-decoration:none;font-size:.9375rem;transition:color .2s var(--ease-out)}
.footer-nav a:hover{color:var(--c-accent)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;
  padding-top:28px;border-top:1px solid rgba(255,255,255,.14);
  font-size:.8125rem;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.5);text-decoration:none}
.footer-bottom a:hover{color:#fff}
.footer-legal{display:flex;gap:20px;flex-wrap:wrap}
.footer-lang{display:flex;gap:10px}
@media (min-width:768px){.footer-top{grid-template-columns:1.4fr 1fr 1fr}}

/* ---------- 404 ---------- */
.error-page{
  min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;
  padding:calc(var(--header-h) + 40px) var(--gutter) 80px;
}
.error-page .kicker{color:var(--c-blue-text)}

/* ---------- reveal / motion ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity var(--dur) var(--ease-out),transform var(--dur) var(--ease-out)}
.reveal.is-visible{opacity:1;transform:translateY(0)}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
  .hero-media img{animation:none}
  .reveal{opacity:1!important;transform:none!important}
}