:root{
  --tensai-dark:#005288;
  --tensai-dark-2:#00436f;
  --tensai-light:#6CB4E4;
  --text:#2c3a46;
  --muted:#5e7284;
  --line:#d9e4ee;
  --bg:#f5f9fd;
  --white:#fff;
  --container:1240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Montserrat',sans-serif;
  color:var(--text);
  background:linear-gradient(180deg,#edf4fa 0%,#ffffff 34%,#f7fbff 100%);
}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}
.container{width:min(calc(100% - 32px), var(--container));margin:0 auto}
.center{text-align:center}

header{
  position:fixed;inset:0 0 auto 0;z-index:50;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid rgba(217,228,238,.9);
  backdrop-filter:blur(10px);
  box-shadow:0 2px 12px rgba(0,0,0,.04);
}
.header-row{
  min-height:82px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{
  width:44px;height:44px;border-radius:12px;
  background:linear-gradient(135deg,var(--tensai-dark),var(--tensai-light));
  position:relative;box-shadow:0 10px 20px rgba(0,82,136,.2);flex:0 0 44px;
}
.brand-mark:before,.brand-mark:after{
  content:"";position:absolute;border:2px solid rgba(255,255,255,.92);
  border-radius:10px;transform:skewX(-16deg)
}
.brand-mark:before{inset:10px 9px}
.brand-mark:after{inset:17px 15px}
.brand-text{font-size:1.42rem;font-weight:800;letter-spacing:-.04em;line-height:.92;color:var(--tensai-dark-2)}
.brand-text small{display:block;font-size:.62rem;letter-spacing:.16em;color:#738699;margin-top:5px}
.brand-text.invert{color:#fff}
.brand-text.invert small{color:rgba(255,255,255,.72)}
.header-right{display:flex;align-items:center;gap:18px}
nav ul{display:flex;list-style:none;padding:0;margin:0;gap:28px}
nav a{font-size:14px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:var(--tensai-dark);position:relative}
nav a:after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--tensai-dark);transition:width .25s ease}
nav a:hover:after{width:100%}
.lang-switch{display:inline-flex;border:1px solid var(--line);padding:4px;border-radius:999px;background:#fff}
.lang-switch button{
  border:0;background:transparent;padding:8px 12px;border-radius:999px;
  font:700 12px 'Montserrat',sans-serif;color:#6e8193;cursor:pointer;
}
.lang-switch button.active{background:var(--tensai-dark);color:#fff}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:0 18px;border-radius:4px;border:0;cursor:pointer;
  font:800 13px 'Montserrat',sans-serif;
}
.btn-header{background:var(--tensai-dark);color:#fff;box-shadow:0 12px 24px rgba(0,82,136,.18)}
.btn-header:hover{background:var(--tensai-light);color:var(--tensai-dark)}

.hero{
  margin-top:82px;min-height:86vh;position:relative;color:#fff;
  background:url('https://images.unsplash.com/photo-1556911220-e15b29be8c8f?auto=format&fit=crop&q=80&w=2000') center/cover no-repeat;
  display:flex;align-items:center;
}
.hero:before{content:"";position:absolute;inset:0;background:linear-gradient(to right, rgba(0,82,136,.9) 28%, rgba(0,0,0,.08) 72%, rgba(0,0,0,.05) 100%)}
.hero-strip{
  position:absolute;right:0;top:0;z-index:2;background:rgba(255,255,255,.92);color:#566a7d;
  padding:16px 22px;border-bottom-left-radius:16px;display:flex;gap:14px;align-items:center;font-size:13px;font-weight:700
}
.hero-strip a{text-decoration:none;color:inherit}
.hero-strip .tensai{font-weight:900;color:var(--tensai-dark-2);font-size:1.15rem;letter-spacing:-.03em}
.hero-content{position:relative;z-index:2;width:100%;padding:0 8%}
.hero-box{
  max-width:420px;padding:28px 26px 24px;border-radius:8px;
  background:linear-gradient(180deg, rgba(0,82,136,.76), rgba(7,34,55,.84));
  border:1px solid rgba(255,255,255,.08);
  box-shadow:0 18px 34px rgba(0,0,0,.18)
}
.section-tag{
  display:block;margin-bottom:15px;color:var(--tensai-light);
  font-size:13px;font-weight:800;text-transform:uppercase;letter-spacing:2px;
}
.section-tag.white{color:rgba(255,255,255,.82)}
.hero h1{margin:0 0 18px;font-size:clamp(2.2rem,4.6vw,3.25rem);line-height:1.03;letter-spacing:-.04em}
.hero p{margin:0 0 24px;font-size:17px;opacity:.96}
.btn-hero{background:#fff;color:var(--tensai-dark);padding:0 30px}
.hero-support{margin-top:24px;padding-left:14px;border-left:3px solid var(--tensai-light);font-size:13px;line-height:1.7;font-weight:600}

.panel{
  width:min(calc(100% - 32px), var(--container));
  margin:-48px auto 40px;position:relative;z-index:5;
  background:#fff;border-radius:8px;overflow:hidden;
  border:1px solid rgba(217,228,238,.8);
  box-shadow:0 20px 40px rgba(0,0,0,.08);
  display:grid;grid-template-columns:1.2fr .8fr;
}
.panel-left,.panel-right{padding:74px 56px}
.panel-left{border-right:1px solid #edf2f6}
.panel-right{background:#fafcfe}
h2,h3{margin:0 0 24px;font-size:clamp(1.85rem,3vw,2.15rem);line-height:1.05;color:var(--tensai-dark);letter-spacing:-.03em}
.panel p{margin:0 0 18px;color:#556675;font-size:16px}
.feature-icons{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:32px}
.icon-box{display:flex;align-items:center;gap:12px;font-weight:600;color:#425a70}
.icon-circle{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--tensai-light),#9fd2f0);flex:0 0 40px}
.company-visuals{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:34px}
.visual-box{
  min-height:120px;border-radius:8px;overflow:hidden;position:relative;border:1px solid #edf2f6;
  background-size:cover;background-position:center;
}
.visual-box.large{grid-column:span 2;min-height:180px;background-image:linear-gradient(rgba(0,0,0,.12),rgba(0,0,0,.18)),url('https://images.unsplash.com/photo-1505693416388-ac5ce068fe85?auto=format&fit=crop&q=80&w=1200')}
.visual-box.factory{background-image:linear-gradient(rgba(0,0,0,.08),rgba(0,0,0,.12)),url('https://images.unsplash.com/photo-1581092918056-0c4c3acd3789?auto=format&fit=crop&q=80&w=1200')}
.visual-box.tech{background-image:linear-gradient(rgba(0,0,0,.08),rgba(0,0,0,.12)),url('https://images.unsplash.com/photo-1581092160607-ee22731f4f07?auto=format&fit=crop&q=80&w=1200')}
.visual-box:after{
  content:attr(data-label);position:absolute;left:12px;bottom:12px;background:rgba(0,82,136,.92);color:#fff;
  padding:7px 10px;border-radius:999px;font-size:12px;font-weight:700
}

.form-group{margin-bottom:14px}
.hp-field{position:absolute;left:-9999px;top:-9999px;height:0;width:0;overflow:hidden}
input,textarea{
  width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:4px;
  font:14px 'Montserrat',sans-serif;color:var(--text);outline:none;background:#fff
}
input:focus,textarea:focus{border-color:rgba(0,82,136,.45);box-shadow:0 0 0 4px rgba(0,82,136,.08)}
textarea{min-height:120px;resize:vertical}
.btn-send{width:100%;background:var(--tensai-dark);color:#fff}
.contact-note{margin-top:18px;color:#667a8c;font-size:14px;line-height:1.7}

.contact-feedback{
  display:none;align-items:flex-start;gap:12px;margin-top:14px;padding:14px 16px;
  border-radius:8px;font-size:14px;font-weight:600;line-height:1.5;border:1px solid transparent;
  animation:contactFeedbackIn .35s ease;
}
.contact-feedback.show{display:flex}
.contact-feedback.success{background:#eafaf0;border-color:#bce8cc;color:#15803d;box-shadow:0 8px 20px rgba(22,163,74,.12)}
.contact-feedback.error{background:#fdeceb;border-color:#f5c6c2;color:#c0281c;box-shadow:0 8px 20px rgba(220,38,38,.1)}
.contact-feedback-icon{
  flex:0 0 22px;width:22px;height:22px;border-radius:50%;margin-top:1px;
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:900;color:#fff;
}
.contact-feedback.success .contact-feedback-icon{background:#16a34a}
.contact-feedback.error .contact-feedback-icon{background:#dc2626}
@keyframes contactFeedbackIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}

.catalog-section{padding:10px 0 14px}
.catalog-card{
  width:min(calc(100% - 32px), var(--container));
  margin:0 auto;background:#fff;border-radius:8px;padding:70px 56px;
  border:1px solid rgba(217,228,238,.8);box-shadow:0 20px 40px rgba(0,0,0,.06);text-align:center
}
.catalog-copy{max-width:720px;margin:0 auto 40px;color:#5b6c7c;font-size:16px}
.catalog-grid{display:flex;justify-content:center;gap:34px;flex-wrap:wrap}
.catalog-item{width:230px}
.catalog-thumb{
  width:100%;height:310px;border-radius:8px;border:1px solid #e7edf3;margin-bottom:14px;
  box-shadow:0 16px 28px rgba(0,82,136,.12);background-size:cover;background-position:center;position:relative;overflow:hidden
}
.catalog-thumb:after{
  content:attr(data-label);position:absolute;left:14px;right:14px;bottom:14px;background:rgba(0,82,136,.92);color:#fff;
  border-radius:4px;padding:11px 10px;font-size:12px;font-weight:800;letter-spacing:.02em
}
.catalog-thumb.one{background-image:url('https://images.unsplash.com/photo-1556909114-f6e7ad7d3136?auto=format&fit=crop&q=80&w=700')}
.catalog-thumb.two{background-image:url('https://images.unsplash.com/photo-1505693416388-ac5ce068fe85?auto=format&fit=crop&q=80&w=700')}
.catalog-thumb.three{background-image:url('https://images.unsplash.com/photo-1556909114-f6e7ad7d3136?auto=format&fit=crop&q=80&w=700')}
.btn-download{font-size:14px;font-weight:800;color:var(--tensai-dark);border-bottom:2px solid var(--tensai-light);padding-bottom:3px}

.product-carousel-section{padding:16px 0 20px}
.product-carousel-card{
  width:min(calc(100% - 32px), var(--container));
  margin:0 auto;background:#fff;border-radius:8px;padding:64px 48px 46px;
  border:1px solid rgba(217,228,238,.8);box-shadow:0 20px 40px rgba(0,0,0,.06);
  overflow:hidden
}
.carousel-copy{max-width:860px;margin:0 auto 28px;text-align:center;color:#5b6c7c;font-size:16px}
.carousel-wrap{position:relative;max-width:1120px;margin:0 auto;padding:0 56px}
.carousel-viewport{overflow:hidden;border-radius:12px}
.carousel-track{display:flex;gap:18px;transform:translateX(0);transition:transform .65s ease;will-change:transform}
.product-slide{
  flex:0 0 calc((100% - 36px) / 3);
  min-width:0;background:#fff;border:1px solid #e7edf3;border-radius:12px;overflow:hidden;
  box-shadow:0 12px 24px rgba(0,82,136,.08)
}
.product-slide img{width:100%;height:250px;object-fit:cover;background:#edf3f8}
.product-slide-info{padding:14px 14px 16px;border-top:1px solid #eef3f7;min-height:118px}
.product-slide-label{
  display:inline-block;margin-bottom:8px;padding:6px 10px;border-radius:999px;
  background:rgba(108,180,228,.16);color:var(--tensai-dark);font-size:11px;font-weight:800;
  letter-spacing:.06em;text-transform:uppercase
}
.product-slide-text{margin:0;font-size:13px;line-height:1.65;color:#546879}
.carousel-arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:3;
  width:46px;height:46px;border-radius:999px;border:1px solid #d7e3ee;background:#fff;color:var(--tensai-dark);
  font-size:24px;line-height:1;cursor:pointer;box-shadow:0 10px 18px rgba(0,82,136,.10)
}
.carousel-arrow.prev{left:0}
.carousel-arrow.next{right:0}
.carousel-dots{display:flex;justify-content:center;gap:8px;margin-top:22px;flex-wrap:wrap}
.carousel-dot{width:10px;height:10px;border-radius:50%;border:0;background:#c8d6e2;cursor:pointer;padding:0}
.carousel-dot.active{background:var(--tensai-dark)}

.editable-note{
  margin:34px auto 0;max-width:860px;padding:14px 16px;border-radius:8px;
  background:linear-gradient(135deg, rgba(108,180,228,.18), rgba(0,82,136,.08));
  border:1px dashed rgba(0,82,136,.2);color:#36566f;font-size:14px;line-height:1.7;text-align:center
}

footer{background:var(--tensai-dark);color:#fff;padding:74px 0 34px;margin-top:24px}
.footer-grid{
  width:min(calc(100% - 32px), var(--container));margin:0 auto 54px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:36px
}
.footer-logo-row{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-title{margin-bottom:18px;color:var(--tensai-light);font-size:14px;font-weight:800;text-transform:uppercase;letter-spacing:.08em}
.footer-links{list-style:none;padding:0;margin:0}
.footer-links li,.footer-text{margin-bottom:10px;font-size:14px;opacity:.86;line-height:1.7}
.footer-links a{color:inherit;text-decoration:none}
.footer-brand-row{margin-top:18px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.footer-tensai{font-weight:800;color:var(--tensai-light)}
.footer-placeholder-logo{
  width:110px;height:28px;border:1px dashed rgba(255,255,255,.35);border-radius:4px;
  display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:700;color:rgba(255,255,255,.78)
}
.footer-bottom{
  width:min(calc(100% - 32px), var(--container));margin:0 auto;border-top:1px solid rgba(255,255,255,.1);
  padding-top:26px;text-align:center;font-size:12px;opacity:.68
}

/* ─── Mobile nav ─────────────────────────────────────────────────────────── */
.nav-toggle{
  display:none;flex-direction:column;justify-content:space-between;
  width:26px;height:19px;background:none;border:none;cursor:pointer;padding:0;flex-shrink:0;
}
.nav-toggle span{display:block;height:2px;background:var(--tensai-dark);border-radius:2px;transition:transform .28s ease,opacity .2s ease}
.nav-toggle.open span:nth-child(1){transform:translateY(8.5px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-8.5px) rotate(-45deg)}

.nav-mobile{
  position:fixed;top:0;right:0;bottom:0;
  width:min(300px,82vw);background:#fff;z-index:200;
  transform:translateX(100%);transition:transform .32s cubic-bezier(.4,0,.2,1);
  padding:100px 28px 40px;display:flex;flex-direction:column;gap:28px;
  box-shadow:-6px 0 32px rgba(0,0,0,.14);overflow-y:auto;
}
.nav-mobile.open{transform:translateX(0)}
.nav-mobile nav ul{display:flex;flex-direction:column;list-style:none;padding:0;margin:0;gap:0}
.nav-mobile nav a{
  display:block;padding:16px 0;font-size:15px;font-weight:700;
  text-transform:uppercase;letter-spacing:.06em;color:var(--tensai-dark);
  border-bottom:1px solid var(--line)
}
.nav-mobile nav li:last-child a{border-bottom:0}
.nav-mobile .lang-switch{align-self:flex-start}
.nav-mobile .btn-header{align-self:stretch;text-align:center;margin-top:auto}

.nav-mobile-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.42);z-index:150;
  opacity:0;pointer-events:none;transition:opacity .3s;
}
.nav-mobile-overlay.show{opacity:1;pointer-events:all}

@media (max-width: 992px){
  nav ul{gap:18px}
  .panel{grid-template-columns:1fr}
  .panel-left,.panel-right,.catalog-card,.product-carousel-card{padding:42px 30px}
  .panel-left{border-right:0;border-bottom:1px solid #edf2f6}
  .footer-grid{grid-template-columns:1fr 1fr}
  .carousel-wrap{padding:0 44px}
  .product-slide{flex:0 0 calc((100% - 18px) / 2)}
}
@media (max-width: 640px){
  .header-row{min-height:64px}
  .header-right nav,.header-right .btn-header,.header-right .lang-switch{display:none}
  .nav-toggle{display:flex}
  .hero{
    min-height:78vh;margin-top:64px;
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    overflow:hidden;
  }
  .hero-strip{
    position:static;flex-shrink:0;
    border-bottom-left-radius:0;justify-content:center;padding:12px 16px;font-size:12px;
  }
  .hero-content{flex:1;display:flex;align-items:center;padding:24px 16px;width:100%}
  .hero-box{max-width:100%;padding:22px 18px 20px}
  .panel-left,.panel-right,.catalog-card,.product-carousel-card{padding:32px 18px}
  .feature-icons{grid-template-columns:1fr}
  .company-visuals{grid-template-columns:1fr}
  .visual-box.large{grid-column:span 1}
  .footer-grid{grid-template-columns:1fr}
  .carousel-wrap{padding:0 38px}
  .product-slide{flex:0 0 100%}
  .product-slide img{height:210px}
  .carousel-copy,.catalog-copy{font-size:14px}
  .carousel-arrow{width:36px;height:36px;font-size:20px}
  .catalog-item{width:100%;max-width:280px}
}

/* ─── Login page ─────────────────────────────────────────────────────────── */
.login-page {
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.login-main {
  flex:1;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:40px 16px;
  margin-top:82px;
}
.login-card {
  width:100%;
  max-width:440px;
  background:#fff;
  border-radius:8px;
  border:1px solid rgba(217,228,238,.8);
  box-shadow:0 20px 40px rgba(0,0,0,.08);
  padding:48px 40px;
}
.login-card h1 {
  font-size:clamp(1.4rem,3vw,1.7rem);
  color:var(--tensai-dark);
  letter-spacing:-.03em;
  margin:0 0 8px;
}
.login-subtitle {
  font-size:14px;
  color:var(--muted);
  margin:0 0 32px;
}
.login-card .form-group label {
  display:block;
  font-size:11px;
  font-weight:700;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--muted);
  margin-bottom:6px;
}
.login-card input { border-radius:4px; }
.login-error {
  background:rgba(220,38,38,.06);
  border:1px solid rgba(220,38,38,.22);
  color:#dc2626;
  padding:11px 14px;
  border-radius:4px;
  font-size:13px;
  margin-bottom:20px;
}
.btn-login {
  width:100%;
  justify-content:center;
  margin-top:8px;
}
.login-back {
  display:block;
  text-align:center;
  margin-top:20px;
  font-size:13px;
  color:var(--muted);
  font-weight:600;
}
.login-back:hover { color:var(--tensai-dark); }

/* ─── Scroll reveal ───────────────────────────────────────────────────────── */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s ease}
.reveal.in-view{opacity:1;transform:translateY(0)}
.reveal-delay-1.in-view{transition-delay:.12s}
.reveal-delay-2.in-view{transition-delay:.22s}
.reveal-delay-3.in-view{transition-delay:.32s}
.reveal-delay-4.in-view{transition-delay:.44s}

/* ─── Button effects ──────────────────────────────────────────────────────── */
.btn{transition:background .2s,color .2s,transform .15s,box-shadow .2s}
.btn:active{transform:translateY(2px) !important;box-shadow:none !important}
.btn-hero:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(255,255,255,.18)}
.btn-header:hover{transform:translateY(-1px)}
.btn-download{transition:color .2s,border-color .2s}
.btn-download:hover{color:var(--tensai-light);border-bottom-color:var(--tensai-dark)}
.lang-switch button{transition:background .18s,color .18s}
.carousel-arrow{transition:background .18s,box-shadow .18s,transform .15s}
.carousel-arrow:hover{transform:translateY(-50%) scale(1.08);box-shadow:0 14px 28px rgba(0,82,136,.18)}

/* ─── Catalog hover ───────────────────────────────────────────────────────── */
.catalog-item{transition:transform .28s ease}
.catalog-item:hover{transform:translateY(-8px)}
.catalog-thumb{transition:box-shadow .28s ease}
.catalog-item:hover .catalog-thumb{box-shadow:0 26px 44px rgba(0,82,136,.22)}

/* ─── Product slide hover zoom ────────────────────────────────────────────── */
.product-slide{transition:transform .25s ease,box-shadow .25s ease}
.product-slide:hover{transform:translateY(-5px);box-shadow:0 20px 38px rgba(0,82,136,.14)}
.product-slide img{transition:transform .5s ease}
.product-slide:hover img{transform:scale(1.06)}

/* ─── Hero entrance ───────────────────────────────────────────────────────── */
.hero-box{animation:heroFadeUp .7s ease both .1s}
@keyframes heroFadeUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}

/* ─── Company visual video ───────────────────────────────────────────────── */
.visual-box.has-video{cursor:pointer}
.visual-play-btn{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:56px;height:56px;border-radius:50%;
  background:rgba(255,255,255,.92);color:var(--tensai-dark);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 26px rgba(0,0,0,.28);
  transition:background .2s,transform .2s;
}
.visual-play-btn svg{margin-left:2px}
.visual-box.has-video:hover .visual-play-btn{background:#fff;transform:translate(-50%,-50%) scale(1.08)}

/* ─── Video modal ─────────────────────────────────────────────────────────── */
.video-modal{
  position:fixed;inset:0;z-index:300;display:none;
  align-items:center;justify-content:center;padding:24px;
}
.video-modal.open{display:flex}
.video-modal-backdrop{position:absolute;inset:0;background:rgba(6,20,32,.82)}
.video-modal-dialog{
  position:relative;width:min(100%,960px);
  animation:videoModalIn .25s ease both;
}
@keyframes videoModalIn{from{opacity:0;transform:scale(.96)}to{opacity:1;transform:scale(1)}}
.video-modal-frame{
  position:relative;width:100%;aspect-ratio:16/9;
  background:#000;border-radius:8px;overflow:hidden;
  box-shadow:0 30px 60px rgba(0,0,0,.5);
}
.video-modal-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.video-modal-close{
  position:absolute;top:-44px;right:0;width:36px;height:36px;border-radius:50%;
  background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.3);
  font-size:22px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:background .2s;
}
.video-modal-close:hover{background:rgba(255,255,255,.24)}
body.video-modal-open{overflow:hidden}