/* ===== Tutor Seal — UK site ===== */
:root{
  --navy:#0a2540;
  --navy-2:#0e2e4d;
  --blue:#1c5d99;
  --blue-bright:#2f7fd1;
  --accent:#f59e0b;
  --accent-dark:#d9860a;
  --ink:#16202e;
  --muted:#5c6b7c;
  --line:#e3e9f0;
  --bg:#ffffff;
  --bg-soft:#f4f7fb;
  --radius:14px;
  --shadow:0 10px 30px rgba(10,37,64,.08);
  --shadow-lg:0 22px 50px rgba(10,37,64,.16);
  --container:1180px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,"Apple Color Emoji",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-weight:600;font-size:.98rem;padding:.85rem 1.5rem;border-radius:999px;border:2px solid transparent;cursor:pointer;transition:.2s ease;white-space:nowrap}
.btn--primary{background:var(--accent);color:#1a1200;border-color:var(--accent)}
.btn--primary:hover{background:var(--accent-dark);border-color:var(--accent-dark);transform:translateY(-2px)}
.btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn--ghost:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn--sm{padding:.55rem 1.1rem;font-size:.9rem}
.btn--block{width:100%}

/* ===== Top bar ===== */
.topbar{background:var(--navy);color:#c9d6e5;font-size:.83rem}
.topbar__inner{display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:40px;flex-wrap:wrap}
.topbar__tag{opacity:.9}
.topbar__contacts{display:flex;gap:20px}
.topbar__link{display:inline-flex;align-items:center;gap:6px;color:#c9d6e5;transition:.2s}
.topbar__link:hover{color:#fff}
.ico{color:var(--accent)}

/* ===== Header ===== */
.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.header__inner{display:flex;align-items:center;justify-content:space-between;min-height:76px;gap:20px}
.brand__logo{height:56px;width:auto;display:block}
.nav{display:flex;align-items:center;gap:6px}
.nav__link{padding:.5rem .9rem;font-weight:600;font-size:.95rem;color:var(--navy-2);border-radius:8px;transition:.2s}
.nav__link:hover{color:var(--blue-bright);background:var(--bg-soft)}
.nav__cta{margin-left:8px}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:26px;height:2.5px;background:var(--navy);border-radius:2px;transition:.3s}

/* ===== Hero ===== */
.hero{position:relative;color:#fff;overflow:hidden;isolation:isolate}
.hero__bg{position:absolute;inset:0;background-size:cover;background-position:center;z-index:-2;transform:scale(1.02)}
.hero__overlay{position:absolute;inset:0;z-index:-1;background:linear-gradient(105deg,rgba(7,26,46,.92) 0%,rgba(9,32,56,.8) 45%,rgba(9,32,56,.35) 100%)}
.hero__inner{padding:96px 24px 104px;max-width:760px}
.hero__eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.8rem;font-weight:700;color:var(--accent);margin-bottom:18px}
.hero__title{font-size:clamp(2.1rem,4.6vw,3.4rem);line-height:1.12;font-weight:800;letter-spacing:-.02em;margin-bottom:20px}
.hero__sub{font-size:clamp(1.02rem,1.5vw,1.2rem);color:#d6e1ee;max-width:600px;margin-bottom:34px}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap}

/* ===== Stats ===== */
.stats{background:var(--navy-2);color:#fff}
.stats__grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:34px 20px;text-align:center;border-right:1px solid rgba(255,255,255,.1)}
.stat:last-child{border-right:0}
.stat__num{display:block;font-size:2.4rem;font-weight:800;letter-spacing:-.02em;line-height:1}
.stat__num small{font-size:1.1rem;color:var(--accent);margin-left:2px;font-weight:700}
.stat__label{display:block;margin-top:8px;font-size:.9rem;color:#aebfd2}

/* ===== Sections ===== */
.section{padding:88px 0}
.section--soft{background:var(--bg-soft)}
.section__head{max-width:720px;margin:0 auto 52px;text-align:center}
.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.8rem;font-weight:700;color:var(--blue-bright);margin-bottom:12px}
.section__title{font-size:clamp(1.7rem,3vw,2.4rem);font-weight:800;letter-spacing:-.02em;color:var(--navy);line-height:1.15}
.section__lead{margin-top:16px;color:var(--muted);font-size:1.05rem}
.section__cta{text-align:center;margin-top:48px}

/* ===== Products ===== */
.products{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.product{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.product:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px);border-color:transparent}
.product__img{background:#fff;padding:14px;aspect-ratio:11/8;display:flex;align-items:center;justify-content:center}
.product__img img{max-height:100%;width:auto;object-fit:contain}
.product__name{font-size:1.05rem;font-weight:700;color:var(--navy);padding:0 20px}
.product__desc{padding:8px 20px 22px;color:var(--muted);font-size:.92rem}

/* ===== Advantages ===== */
.advantages{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.advantage{background:#fff;border-radius:var(--radius);padding:34px 26px;box-shadow:var(--shadow);border-top:3px solid var(--accent);transition:.25s}
.advantage:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.advantage__icon{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,var(--blue),var(--navy));color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.6rem;margin-bottom:18px}
.advantage h3{font-size:1.15rem;color:var(--navy);margin-bottom:10px}
.advantage p{color:var(--muted);font-size:.94rem}

/* ===== Applications ===== */
.applications{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.app-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:.25s}
.app-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.app-card__img{aspect-ratio:16/10;overflow:hidden}
.app-card__img img{width:100%;height:100%;object-fit:cover;transition:.4s}
.app-card:hover .app-card__img img{transform:scale(1.06)}
.app-card__body{padding:24px}
.app-card__body h3{font-size:1.15rem;color:var(--navy);margin-bottom:10px}
.app-card__body p{color:var(--muted);font-size:.94rem;margin-bottom:16px}
.app-card--cta{background:linear-gradient(135deg,var(--navy),var(--blue));color:#fff;justify-content:center}
.app-card--cta h3{color:#fff}
.app-card--cta p{color:#cfe0f0}

/* ===== About ===== */
.about{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.about__media{position:relative}
.about__media img{border-radius:var(--radius);box-shadow:var(--shadow-lg)}
.about__badge{position:absolute;bottom:-22px;left:-22px;background:var(--accent);color:#1a1200;padding:16px 22px;border-radius:12px;box-shadow:var(--shadow)}
.about__badge strong{display:block;font-size:1.3rem}
.about__badge span{font-size:.85rem}
.about__content .section__title{text-align:left}
.about__content p{color:var(--muted);margin-top:16px}
.ticks{list-style:none;margin:22px 0 28px;display:grid;gap:12px}
.ticks li{position:relative;padding-left:32px;color:var(--ink);font-weight:500}
.ticks li::before{content:"\2713";position:absolute;left:0;top:0;width:22px;height:22px;background:var(--blue);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.75rem}

/* ===== Contact ===== */
.contact{display:grid;grid-template-columns:1fr 1.2fr;gap:48px;align-items:start}
.contact__info{display:grid;gap:22px}
.contact__item{display:flex;gap:16px;align-items:flex-start}
.contact__ico{width:46px;height:46px;flex:none;border-radius:12px;background:var(--bg-soft);color:var(--blue);display:flex;align-items:center;justify-content:center;font-size:1.3rem}
.contact__label{display:block;font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:700}
.contact__item a,.contact__item span{color:var(--navy);font-weight:600}
.contact__note{background:var(--bg-soft);border-left:3px solid var(--accent);padding:18px 20px;border-radius:10px;margin-top:8px}
.contact__note strong{color:var(--navy)}
.contact__note p{color:var(--muted);font-size:.92rem;margin-top:4px}
.contact__form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:block;margin-bottom:16px}
.field span{display:block;font-size:.85rem;font-weight:600;color:var(--navy);margin-bottom:6px}
.field input,.field textarea{width:100%;padding:.75rem .9rem;border:1px solid var(--line);border-radius:10px;font-family:inherit;font-size:.95rem;color:var(--ink);background:#fff;transition:.2s}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--blue-bright);box-shadow:0 0 0 3px rgba(47,127,209,.15)}
.field textarea{resize:vertical}
.form-hint{text-align:center;color:var(--muted);font-size:.88rem;margin-top:14px}
.form-hint a{color:var(--blue);font-weight:600}

/* ===== Footer ===== */
.footer{background:var(--navy);color:#c2d0e0}
.footer__inner{display:grid;grid-template-columns:2fr 1fr 1fr 1.3fr;gap:40px;padding:60px 24px 40px}
.footer__logo{height:72px;width:auto;background:#fff;padding:6px;border-radius:12px;margin-bottom:16px}
.footer__brand p{font-size:.92rem;color:#9fb2c8;max-width:280px}
.footer__col h4{color:#fff;font-size:1rem;margin-bottom:16px}
.footer__col a,.footer__addr{display:block;color:#9fb2c8;font-size:.92rem;margin-bottom:10px;transition:.2s}
.footer__col a:hover{color:var(--accent)}
.footer__bar{border-top:1px solid rgba(255,255,255,.1)}
.footer__bar-inner{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;font-size:.85rem;color:#7e93ab;flex-wrap:wrap;gap:8px}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .products,.advantages{grid-template-columns:repeat(2,1fr)}
  .applications{grid-template-columns:repeat(2,1fr)}
  .footer__inner{grid-template-columns:1fr 1fr}
}
@media (max-width:820px){
  .nav{position:fixed;top:76px;right:0;left:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:12px 24px 24px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);transform:translateY(-140%);transition:.3s;z-index:40}
  .nav.open{transform:translateY(0)}
  .nav__link{padding:.85rem .5rem;border-bottom:1px solid var(--bg-soft)}
  .nav__cta{margin:12px 0 0;text-align:center}
  .nav-toggle{display:flex}
  .nav-toggle.open span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
  .nav-toggle.open span:nth-child(2){opacity:0}
  .nav-toggle.open span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}
  .stats__grid{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:0}
  .about,.contact{grid-template-columns:1fr;gap:40px}
  .about__media{max-width:520px}
  .topbar__tag{display:none}
  .topbar__inner{justify-content:center}
}
@media (max-width:560px){
  .section{padding:64px 0}
  .products,.advantages,.applications{grid-template-columns:1fr}
  .field-row{grid-template-columns:1fr}
  .footer__inner{grid-template-columns:1fr}
  .hero__inner{padding:72px 24px 80px}
  .footer__bar-inner{justify-content:center;text-align:center}
}