* { box-sizing: border-box; }
:root { color-scheme: light; --ink: #17304d; --muted: #63798e; --blue: #1257b0; --line: #dce6ef; }
body { margin: 0; background: #fff; color: var(--ink); font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
button { cursor: pointer; }
[hidden] { display: none !important; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 3px solid #719dea; outline-offset: 4px; }
.page-header { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 20px clamp(22px, 5vw, 76px); border-bottom: 1px solid #e3eaf2; background: #fff; }
.page-logo img { display: block; width: 175px; height: auto; }
.page-nav, .page-header-actions, .page-languages { display: flex; align-items: center; }
.page-nav { gap: clamp(16px, 2.2vw, 32px); }
.page-nav a { text-decoration: none; color: var(--muted); font-size: .88rem; font-weight: 750; }
.page-nav a:hover, .page-nav a[aria-current] { color: var(--blue); }
.page-header-actions { gap: 12px; }
.page-languages button { border: 0; padding: 8px; color: var(--muted); background: transparent; font-size: .75rem; font-weight: 850; }
.page-languages button[aria-pressed="true"] { color: var(--blue); background: #eaf2ff; border-radius: 7px; }
.button { display: inline-flex; justify-content: center; align-items: center; min-height: 48px; padding: 14px 22px; border: 1px solid transparent; border-radius: 11px; text-decoration: none; background: var(--blue); color: #fff; font-weight: 800; line-height: 1.35; transition: background .15s, transform .15s; }
.button:hover { background: #0e478e; transform: translateY(-1px); }
.button-small { min-height: 42px; padding: 11px 15px; font-size: .82rem; white-space: nowrap; }
.button-whatsapp { background: #168266; }
.button-whatsapp:hover { background: #106e55; }
.button-outline { border-color: var(--line); background: #fff; color: var(--blue); }
.button-outline:hover { background: #edf4ff; }
.page-hero { padding: 48px max(24px, calc((100vw - 1160px) / 2)) 70px; background: linear-gradient(125deg, #f5f9ff, #eaf4ff 65%, #edf9f4); }
.contacts-hero { display: grid; grid-template-columns: 1.1fr .9fr; gap: 70px; align-items: center; }
.back-link { display: inline-block; margin-bottom: 36px; color: var(--muted); font-size: .82rem; font-weight: 700; text-decoration: none; }
.eyebrow { margin: 0 0 16px; color: var(--blue); letter-spacing: .09em; font-size: .73rem; font-weight: 850; }
h1, .office-section h2, .help-section > h2 { font-family: Georgia, "Times New Roman", serif; font-weight: 500; letter-spacing: -.04em; }
h1 { font-size: clamp(2.9rem, 5vw, 5.4rem); margin: 0; line-height: 1.04; color: #13365e; }
[data-i18n="contactTitle"], [data-i18n="officeTitle"], [data-i18n="officeAddress"], [data-i18n="libraryTitle"] { white-space: pre-line; }
.hero-lead { font-size: 1.04rem; line-height: 1.75; color: var(--muted); max-width: 670px; margin: 25px 0 28px; }
.hero-note { color: var(--muted); font-size: .8rem; line-height: 1.6; max-width: 380px; margin-top: 16px; }
.contact-feature { position: relative; padding: 38px; background: #fff; border: 1px solid var(--line); border-radius: 26px; box-shadow: 0 24px 60px #214f7610; }
.feature-symbol { display: grid; place-items: center; width: 68px; height: 68px; margin-bottom: 40px; background: #e2f5ed; border-radius: 20px; color: #168266; font-size: 2.2rem; }
.contact-feature .eyebrow { font-size: .65rem; }
.feature-phone { color: var(--ink); font-size: clamp(1.5rem, 2.5vw, 2.1rem); font-weight: 800; letter-spacing: -.04em; text-decoration: none; white-space: nowrap; }
.contact-feature > p:not(.eyebrow) { color: var(--muted); line-height: 1.7; }
.feature-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.feature-chips span { padding: 7px 9px; color: #527187; border-radius: 9px; background: #f1f6fa; font-size: .69rem; font-weight: 700; }
.page-section { max-width: 1208px; margin: 0 auto; padding: 70px 24px; }
.contact-channels { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.channel-card { display: flex; flex-direction: column; padding: 28px; border: 1px solid var(--line); border-radius: 20px; }
.channel-icon { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 14px; background: #eaf2ff; color: var(--blue); font-size: 1.2rem; font-weight: 900; }
.channel-icon.green { background: #e2f5ed; color: #168266; font-size: .9rem; }
.channel-icon.violet { background: #eee8ff; color: #6546b8; }
.channel-card h2 { margin: 24px 0 6px; font-size: 1.28rem; }
.channel-card p { flex: 1; margin: 8px 0 22px; color: var(--muted); line-height: 1.7; font-size: .9rem; }
.text-link { font-size: .9rem; font-weight: 800; color: var(--blue); text-decoration: none; }
.text-link:hover { text-decoration: underline; }
.office-section { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 80px; border-top: 1px solid #e9eff5; }
.office-section h2 { font-size: clamp(2.4rem, 4vw, 3.8rem); margin: 0; line-height: 1.1; }
.office-section > div > p:not(.eyebrow) { line-height: 1.8; color: var(--muted); max-width: 420px; }
.address-card { display: flex; flex-direction: column; align-items: flex-start; padding: 38px; border-radius: 24px; background: #12395f; color: #fff; }
.address-symbol { font-size: 3rem; color: #9ccaff; margin-bottom: 25px; }
.address-card .eyebrow { color: #a9cbeb; }
.address-card h3 { font-size: 1.8rem; font-weight: 600; line-height: 1.4; margin: 0; }
.address-card .office-room { color: #d2e3f4; font-size: 1.12rem; margin: 14px 0 28px; }
.address-card .text-link { color: #b1d8ff; }
.help-section { padding-top: 30px; }
.help-section > h2 { margin: 0; font-size: clamp(2.1rem, 3.2vw, 3rem); max-width: 700px; }
.help-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; margin-top: 35px; }
.help-grid article { border-top: 2px solid #caddf1; padding-top: 20px; }
.help-grid article > span { color: var(--blue); font-weight: 850; }
.help-grid h3 { font-size: 1.05rem; margin: 16px 0 10px; }
.help-grid p { color: var(--muted); font-size: .9rem; line-height: 1.8; }
.page-cta { display: flex; align-items: center; justify-content: space-between; gap: 30px; max-width: 1160px; margin: 20px auto 80px; padding: 38px; background: #edf7f3; border-radius: 24px; }
.page-cta h2 { margin: 0 0 12px; font-size: 1.55rem; }
.page-cta p { margin: 0; color: var(--muted); line-height: 1.65; }
.page-cta .button { flex-shrink: 0; }
.page-footer { display: grid; grid-template-columns: 1fr .9fr 1.2fr auto; align-items: start; gap: 34px; padding: 48px clamp(24px, 5vw, 76px); background: #0e2743; color: #b7c8d8; font-size: .85rem; }
.page-footer img { width: 155px; filter: brightness(0) invert(1); }
.page-footer > div { display: grid; gap: 12px; line-height: 1.5; }
.page-footer a { text-decoration: none; }
.page-footer a:hover { color: #fff; }
.materials-hero { padding-bottom: 48px; }
.materials-hero h1 { font-size: clamp(2.7rem, 4.8vw, 5rem); }
.demo-banner { display: flex; align-items: flex-start; gap: 12px; padding: 16px 20px; border: 1px solid #bcd9cf; border-radius: 13px; background: #f0fbf6; max-width: 740px; }
.demo-banner p { margin: 0; color: #315e4e; line-height: 1.6; font-size: .83rem; }
.demo-dot { width: 8px; height: 8px; flex: 0 0 8px; margin-top: 7px; border-radius: 100%; background: #168266; }
.library-section { padding-top: 38px; }
.library-toolbar { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; }
.search-field { display: grid; gap: 8px; font-size: .8rem; font-weight: 750; min-width: 280px; }
.search-field input { width: 100%; padding: 13px 16px; min-height: 48px; border: 1px solid var(--line); border-radius: 10px; background: #f8fafc; color: var(--ink); }
.filter-buttons { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-buttons button { padding: 12px 14px; min-height: 44px; border: 1px solid var(--line); border-radius: 9px; background: #fff; color: var(--muted); font-size: .8rem; font-weight: 750; }
.filter-buttons button[aria-pressed="true"] { color: #fff; background: var(--blue); border-color: var(--blue); }
.library-count { font-size: .8rem; color: var(--muted); margin: 24px 0 18px; }
.material-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.material-card { display: flex; flex-direction: column; padding: 26px; border: 1px solid var(--line); border-radius: 20px; transition: border-color .15s, box-shadow .15s; }
.material-card:hover { border-color: #a3bfdf; box-shadow: 0 12px 35px #17304d09; }
.material-card-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.material-type { font-size: .68rem; font-weight: 850; letter-spacing: .06em; color: var(--blue); }
.demo-label { display: inline-block; padding: 5px 8px; border-radius: 6px; background: #e8f5ee; color: #14745f; font-size: .66rem; font-weight: 850; }
.material-card h2 { font-size: 1.18rem; line-height: 1.4; margin: 22px 0 12px; }
.material-card p { flex: 1; color: var(--muted); font-size: .88rem; line-height: 1.7; margin: 0 0 22px; }
.material-card-meta { font-size: .72rem; color: #8394a4; margin-bottom: 22px; }
.material-card-actions { display: flex; align-items: center; gap: 14px; border-top: 1px solid #edf2f7; padding-top: 18px; }
.material-card-actions button { border: 0; background: none; padding: 8px 0; font-size: .8rem; font-weight: 800; color: var(--blue); }
.material-card-actions button:first-child { margin-right: auto; }
.empty-search { text-align: center; padding: 40px 15px; border: 1px dashed var(--line); border-radius: 18px; }
.empty-search p { color: var(--muted); line-height: 1.7; }
.material-dialog { width: min(740px, calc(100% - 32px)); max-height: calc(100% - 40px); border: 0; border-radius: 22px; padding: 0; color: var(--ink); box-shadow: 0 30px 100px #102d4a40; }
.material-dialog::backdrop { background: #0e2743b3; }
.material-dialog-header { display: flex; align-items: center; justify-content: space-between; padding: 20px 30px; border-bottom: 1px solid var(--line); }
.dialog-close { width: 36px; height: 36px; border: 0; border-radius: 10px; background: #edf2f7; color: var(--ink); font-size: 1.6rem; line-height: 1; }
.material-dialog-body { padding: 30px; }
.material-dialog h2 { font-size: 1.8rem; margin: 0 0 14px; line-height: 1.3; }
.material-summary { color: var(--muted); line-height: 1.7; }
.sample-section { margin: 26px 0 0; }
.sample-section h3 { font-size: 1rem; color: var(--blue); }
.sample-section ul { padding-left: 22px; }
.sample-section li { margin: 10px 0; font-size: .92rem; line-height: 1.7; }
.material-dialog-footer { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 22px 30px; background: #f6f9fc; border-top: 1px solid var(--line); }
.material-dialog-footer p { font-size: .75rem; color: var(--muted); line-height: 1.65; max-width: 270px; }
.material-dialog-footer .button { flex-shrink: 0; font-size: .82rem; }
@media (max-width: 1000px) {
  .page-header { flex-wrap: wrap; gap: 18px; }
  .page-nav { order: 3; flex-basis: 100%; justify-content: center; padding-top: 12px; border-top: 1px solid #edf2f7; }
  .contacts-hero { gap: 30px; }
  .contact-feature { padding: 26px; }
  .office-section { gap: 30px; }
  .page-cta { margin-left: 24px; margin-right: 24px; }
  .library-toolbar { flex-direction: column; align-items: stretch; }
  .material-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 650px) {
  .page-header { gap: 14px; padding: 18px 20px; }
  .page-logo img { width: 125px; }
  .page-header-actions { gap: 8px; }
  .page-languages button { padding: 8px 6px; }
  .page-header-actions .button { padding: 10px 12px; font-size: .72rem; }
  .page-nav { justify-content: space-between; gap: 10px; }
  .page-nav a { font-size: .73rem; }
  .page-hero { padding: 28px 22px 45px; }
  .contacts-hero, .office-section { grid-template-columns: 1fr; }
  h1 { font-size: 3rem; }
  .back-link { margin-bottom: 28px; }
  .hero-lead { font-size: .96rem; }
  .contact-feature { padding: 28px; }
  .feature-symbol { margin-bottom: 24px; }
  .feature-phone { font-size: 1.9rem; }
  .page-section { padding: 42px 22px; }
  .contact-channels, .help-grid, .material-grid { grid-template-columns: 1fr; }
  .address-card { padding: 30px; }
  .page-cta { align-items: stretch; flex-direction: column; padding: 28px; margin: 15px 22px 55px; }
  .page-footer { grid-template-columns: 1fr; gap: 26px; padding: 38px 24px; }
  .material-dialog-header, .material-dialog-body { padding: 20px; }
  .material-dialog h2 { font-size: 1.45rem; }
  .material-dialog-footer { align-items: stretch; flex-direction: column; padding: 20px; gap: 8px; }
  .material-dialog-footer p { max-width: none; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; } }
.course-library-controls{display:flex;gap:24px;align-items:end;justify-content:space-between;margin:20px 0}.course-library-controls select{font:inherit;width:100%;max-width:600px;border:1px solid #dce6f0;border-radius:12px;padding:15px;background:#f7f9fc;color:#17304d}.course-library-controls .search-field{width:min(100%,600px)}.material-grid.course-library{display:block}.course-library-group{margin:0 0 44px;padding-top:18px;border-top:1px solid #dce6f0}.course-library-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:10px 0 22px}.course-library-heading h2{font-size:1.5rem;margin:6px 0}.course-library-heading>span{white-space:nowrap;color:#687f97;font-size:.85rem}.course-library-heading .eyebrow{font-size:.65rem}.course-library-group .material-card h3{font-size:1.2rem;line-height:1.4;margin:18px 0}.course-no-materials{color:#687f97;margin:0 0 20px}.method-body{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.8}.library-access-note{padding:20px;background:#edf4ff;border-radius:12px}@media(max-width:760px){.course-library-controls,.course-library-heading{align-items:flex-start;flex-direction:column}.course-library-controls .search-field{width:100%}.course-library-heading>span{white-space:normal}}