@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url("/fonts/ibm-plex-sans-cyrillic.woff2") format("woff2");
  unicode-range: U+0301, U+0400-045f, U+0490-0491, U+04b0-04b1, U+2116;
}

@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url("/fonts/ibm-plex-sans-latin.woff2") format("woff2");
  unicode-range: U+0000-00ff, U+0131, U+0152-0153, U+02bb-02bc, U+02c6, U+02da, U+02dc,
    U+0304, U+0308, U+0329, U+2000-206f, U+20ac, U+2122, U+2191, U+2193, U+2212, U+2215,
    U+feff, U+fffd;
}

@layer reset, base, layout, components, utilities;

@layer reset {
  :where(html, body, h1, h2, h3, p, ul, ol, dl, dd, figure) {
    margin: 0;
  }

  :where(ul, ol) {
    padding: 0;
  }

  :where(img, svg) {
    display: block;
    max-inline-size: 100%;
  }

  :where(a) {
    box-sizing: border-box;
  }
}

@layer base {
  :root {
    color-scheme: light;
    --paper: #e5eaf0;
    --beige: #f6efe5;
    --ink: #273c76;
    --heading: #131936;
    --accent: #526990;
    --boundary-blue: #57698d;
    --ink-muted: #4d5b6c;
    --line: rgb(39 60 118 / 20%);
    --accent-soft: var(--beige);
    --font: "IBM Plex Sans", system-ui, sans-serif;
    --text-small: 1rem;
    --text-body: 1.125rem;
    --shell: 72rem;
    --radius: 0.7rem;
  }

  html {
    scroll-behavior: smooth;
    scroll-padding-block-start: 5.5rem;
    scrollbar-color: var(--accent) var(--paper);
  }

  body {
    min-inline-size: 20rem;
    background-color: var(--paper);
    background-image:
      linear-gradient(rgb(229 234 240 / 84%) 0 0),
      url("/images/gzhel-soft.webp");
    background-position: center top;
    background-size: auto, 64rem auto;
    color: var(--ink);
    font-family: var(--font);
    font-size: var(--text-body);
    line-height: 1.55;
    text-align: start;
  }

  :where(h1, h2, h3) {
    color: var(--heading);
    font-family: var(--font);
    font-weight: 600;
    line-height: 1.1;
    text-wrap: balance;
  }

  h1 {
    max-inline-size: 12ch;
    font-size: clamp(3rem, 6.7vw, 5.9rem);
    letter-spacing: -0.035em;
  }

  h2 {
    max-inline-size: 21ch;
    font-size: clamp(2.15rem, 4.2vw, 3.9rem);
    letter-spacing: -0.025em;
  }

  h3 {
    font-size: clamp(1.25rem, 1.8vw, 1.55rem);
    letter-spacing: -0.01em;
  }

  p {
    text-wrap: pretty;
  }

  a {
    color: currentColor;
    text-decoration-thickness: 0.08em;
    text-underline-offset: 0.22em;
  }

  :where(a, summary, [tabindex]):focus-visible {
    outline: 0.2rem solid var(--accent);
    outline-offset: 0.22rem;
  }

  ::selection {
    background: var(--accent);
    color: var(--beige);
  }
}

@layer layout {
  .shell {
    inline-size: min(calc(100% - 3rem), var(--shell));
    margin-inline: auto;
  }

  .section {
    padding-block: clamp(5rem, 8vw, 7.5rem);
    border-block-start: 1px solid var(--line);
  }

  .site-header {
    position: sticky;
    z-index: 10;
    inset-block-start: 0;
    border-block-end: 1px solid var(--line);
    background: rgb(229 234 240 / 94%);
    backdrop-filter: blur(0.8rem);
  }

  .header-inner {
    min-block-size: 4.75rem;
    display: flex;
    align-items: center;
    gap: 2rem;
  }

  .header-inner nav {
    margin-inline-start: auto;
  }

  .hero {
    padding-block: clamp(4.5rem, 9vw, 8rem);
  }

  .hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.18fr) minmax(18rem, 0.62fr);
    align-items: center;
    gap: clamp(3rem, 8vw, 8rem);
  }

  .section-heading {
    display: grid;
    justify-items: center;
    text-align: center;
    margin-block-end: clamp(3rem, 6vw, 5rem);
  }

  .approach-grid {
    max-inline-size: 54rem;
    margin-inline: auto;
  }

  .request-columns,
  .details-grid,
  .faq-grid,
  .contact-grid {
    display: grid;
    grid-template-columns: minmax(16rem, 0.72fr) minmax(22rem, 1.28fr);
    gap: clamp(3rem, 8vw, 8rem);
  }

  .footer-inner {
    display: grid;
    grid-template-columns: 1fr 1.3fr auto;
    align-items: end;
    gap: 2rem;
  }
}

@layer components {
  .skip-link {
    z-index: 100;
    position: fixed;
    inset-block-start: 1rem;
    inset-inline-start: 1rem;
    padding: 0.7rem 1rem;
    border: 1px solid var(--ink);
    border-radius: 0.35rem;
    background: var(--accent-soft);
  }

  .brand {
    min-block-size: 3rem;
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    text-decoration: none;
  }

  .brand-name {
    font-size: var(--text-body);
    font-weight: 600;
    line-height: 1.1;
  }

  .brand-role {
    margin-block-start: 0.2rem;
    color: var(--ink-muted);
    font-size: var(--text-small);
    line-height: 1.1;
  }

  .nav-list {
    display: flex;
    align-items: center;
    gap: clamp(1rem, 2.5vw, 2.4rem);
    list-style: none;
  }

  .nav-list a {
    min-block-size: 2.75rem;
    display: inline-grid;
    place-items: center;
    color: var(--ink-muted);
    font-size: var(--text-small);
    text-decoration: none;
  }

  .nav-list a:hover {
    color: var(--ink);
  }

  .button {
    min-block-size: 3.35rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding-inline: 1.55rem;
    border: 1px solid var(--accent);
    border-radius: var(--radius);
    background: var(--accent);
    color: var(--beige);
    font-weight: 600;
    line-height: 1.2;
    text-align: center;
    text-decoration: none;
    transition: background-color 160ms ease, color 160ms ease;
  }

  .button:hover {
    background: transparent;
    color: var(--accent);
  }

  .button-small {
    min-block-size: 2.8rem;
    padding-inline: 1.15rem;
    font-size: var(--text-small);
  }

  .eyebrow {
    color: var(--accent);
    font-size: var(--text-small);
    font-weight: 600;
  }

  .hero-copy h1 {
    margin-inline: auto;
    text-align: center;
  }

  .hero-lead {
    max-inline-size: 40rem;
    margin-block-start: 2rem;
    color: var(--ink);
    font-size: clamp(1.25rem, 1.8vw, 1.45rem);
  }

  .hero-about {
    max-inline-size: 39rem;
    margin-block-start: 1.25rem;
    color: var(--ink-muted);
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem 1.35rem;
    margin-block-start: 2rem;
  }

  .text-link {
    min-block-size: 2.75rem;
    display: inline-grid;
    place-items: center start;
    font-weight: 600;
  }

  .trust-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem 1.4rem;
    margin-block-start: 2.5rem;
    padding-block-start: 1.25rem;
    border-block-start: 1px solid var(--line);
    color: var(--ink-muted);
    font-size: var(--text-small);
    list-style: none;
  }

  .trust-list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }

  .trust-list li::before {
    inline-size: 0.38rem;
    block-size: 0.38rem;
    border-radius: 50%;
    background: var(--accent);
    content: "";
  }

  .hero-portrait {
    min-inline-size: 0;
  }

  .portrait-placeholder {
    inline-size: 100%;
    aspect-ratio: 4 / 5;
    box-sizing: border-box;
    display: grid;
    place-items: end start;
    padding: 1.5rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--accent-soft);
    color: var(--ink-muted);
  }

  .hero-portrait figcaption {
    margin-block-start: 0.75rem;
    color: var(--ink-muted);
    font-size: var(--text-small);
  }

  .approach-grid {
    border-block-start: 1px solid var(--line);
  }

  .approach-item {
    display: grid;
    grid-template-columns: 3rem minmax(0, 1fr) 3rem;
    gap: 1.4rem;
    padding-block: 2rem;
    border-block-end: 1px solid var(--line);
  }

  .section-number {
    color: var(--accent);
    font-size: var(--text-small);
    font-weight: 600;
  }

  .approach-item p:last-child {
    max-inline-size: 44rem;
    margin-block-start: 0.8rem;
    color: var(--ink-muted);
  }

  .approach-item h3,
  .request-columns h3 {
    text-align: center;
  }

  .request-columns h3 {
    margin-block-end: 1.4rem;
  }

  .request-list {
    border-block-start: 1px solid var(--line);
    list-style: none;
  }

  .request-list li {
    display: grid;
    gap: 0.5rem;
    padding-block: 1.45rem;
    border-block-end: 1px solid var(--line);
  }

  .request-list strong {
    font-size: var(--text-body);
    line-height: 1.35;
  }

  .request-list span,
  .boundary-panel li,
  .boundary-panel p {
    color: var(--ink-muted);
  }

  .boundary-panel {
    align-self: start;
    padding: clamp(1.5rem, 3vw, 2.5rem);
    border: 1px solid var(--boundary-blue);
    border-radius: var(--radius);
    background: var(--boundary-blue);
  }

  .boundary-panel :is(h3, li, p) {
    color: var(--beige);
  }

  .boundary-panel a:focus-visible {
    outline-color: var(--beige);
  }

  .boundary-list {
    display: grid;
    gap: 1rem;
    margin-block-start: 1.4rem;
    padding-inline-start: 1.25rem;
  }

  .boundary-panel p {
    margin-block-start: 1.5rem;
  }

  .session-facts,
  .faq-list {
    border-block-start: 1px solid var(--line);
  }

  .session-facts > div {
    display: grid;
    grid-template-columns: minmax(7rem, 0.38fr) 1fr;
    gap: 1.5rem;
    padding-block: 1.15rem;
    border-block-end: 1px solid var(--line);
  }

  .session-facts dt {
    color: var(--ink-muted);
    font-size: var(--text-small);
  }

  .session-facts dd {
    font-weight: 600;
  }

  .draft-fact dd {
    color: var(--accent);
  }

  .faq-list details {
    border-block-end: 1px solid var(--line);
  }

  .faq-list summary {
    min-block-size: 4.8rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    cursor: pointer;
    font-size: var(--text-body);
    font-weight: 600;
    list-style: none;
  }

  .faq-list summary::-webkit-details-marker {
    display: none;
  }

  .faq-list summary::after {
    flex: 0 0 auto;
    color: var(--accent);
    content: "+" / "";
    font-size: 1.4rem;
    font-weight: 400;
  }

  .faq-list details[open] summary::after {
    content: "−" / "";
  }

  .faq-list details p {
    max-inline-size: 42rem;
    padding-block: 0 1.6rem;
    color: var(--ink-muted);
  }

  .education-heading {
    display: grid;
    justify-items: center;
    text-align: center;
  }

  .certificate-track {
    inline-size: min(calc(100% - 3rem), var(--shell));
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(20rem, 0.48fr);
    gap: 1.5rem;
    margin-block-start: 3rem;
    margin-inline: auto;
    padding: 0.25rem 0.25rem 1rem;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scroll-snap-type: inline mandatory;
    scrollbar-color: var(--accent) transparent;
  }

  .certificate-card {
    min-inline-size: 0;
    scroll-snap-align: start;
  }

  .certificate-sheet {
    aspect-ratio: 1 / 1.414;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    border: 1px solid var(--line);
    background: var(--beige);
    color: var(--ink-muted);
  }

  .certificate-type {
    margin-block-end: 2.2rem;
    color: var(--ink);
    font-size: clamp(1.4rem, 3vw, 2.25rem);
    font-weight: 600;
  }

  .certificate-line {
    inline-size: 54%;
    block-size: 1px;
    margin-block-start: 1rem;
    background: var(--line);
  }

  .certificate-line-wide {
    inline-size: 78%;
  }

  .certificate-seal {
    inline-size: 4.5rem;
    aspect-ratio: 1;
    margin-block-start: 3rem;
    border: 1px solid var(--accent);
    border-radius: 50%;
  }

  .certificate-card figcaption {
    display: grid;
    gap: 0.25rem;
    margin-block-start: 1rem;
  }

  .certificate-card figcaption span {
    color: var(--ink-muted);
    font-size: var(--text-small);
  }

  .contact-copy > p:not(.eyebrow) {
    max-inline-size: 31rem;
    margin-block-start: 1.4rem;
    color: var(--ink-muted);
  }

  .contact-actions {
    display: grid;
    gap: 1rem;
    font-style: normal;
  }

  .contact-button {
    min-block-size: 5.4rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    padding: 1.15rem 1.3rem;
    border: 1px solid var(--accent);
    border-radius: var(--radius);
    color: var(--accent);
    text-decoration: none;
    transition: background-color 160ms ease, color 160ms ease;
  }

  .contact-button:hover {
    background: var(--accent);
    color: var(--beige);
  }

  .contact-button span {
    font-size: var(--text-small);
  }

  .contact-button strong {
    font-size: clamp(1.05rem, 2vw, 1.35rem);
    overflow-wrap: anywhere;
  }

  .site-footer {
    padding-block: 3rem;
    border-block-start: 1px solid var(--line);
  }

  .footer-inner > div p:last-child,
  .footer-note {
    margin-block-start: 0.5rem;
    color: var(--ink-muted);
    font-size: var(--text-small);
  }

  .footer-note {
    max-inline-size: 29rem;
  }

  .footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem 1.3rem;
    font-size: var(--text-small);
  }

  .not-found,
  .legal-page {
    min-block-size: 100dvh;
    display: grid;
    align-items: center;
    padding-block: 3rem;
  }

  .not-found-inner h1,
  .legal-page h1 {
    margin-block-start: 1rem;
  }

  .not-found-inner > p:not(.eyebrow),
  .legal-page article > p:not(.eyebrow) {
    max-inline-size: 42rem;
    margin-block-start: 1.5rem;
    color: var(--ink-muted);
    font-size: var(--text-body);
  }

  .not-found-inner .button,
  .legal-page .button {
    margin-block-start: 2rem;
  }
}

@layer utilities {
  .visually-hidden:where(:not(:focus-within, :active)) {
    position: absolute !important;
    inline-size: 1px !important;
    block-size: 1px !important;
    margin: -1px !important;
    padding: 0 !important;
    overflow: hidden !important;
    border: 0 !important;
    clip-path: inset(50%) !important;
    white-space: nowrap !important;
  }

  @media (max-width: 60rem) {
    .hero-grid,
    .request-columns,
    .details-grid,
    .faq-grid,
    .contact-grid {
      grid-template-columns: 1fr;
    }

    .hero-copy {
      max-inline-size: 45rem;
    }

    .hero-portrait {
      max-inline-size: 31rem;
    }

    .request-columns {
      gap: 3rem;
    }

    .footer-inner {
      grid-template-columns: 1fr 1fr;
    }

    .footer-links {
      grid-column: 1 / -1;
    }
  }

  @media (max-width: 45rem) {
    .shell,
    .certificate-track {
      inline-size: min(calc(100% - 2rem), var(--shell));
    }

    .section {
      padding-block: 4rem;
    }

    .header-inner {
      min-block-size: 4.35rem;
      gap: 0.8rem;
    }

    .header-inner nav {
      display: none;
    }

    .header-inner .button {
      margin-inline-start: auto;
    }

    .hero {
      padding-block: 4rem;
    }

    .hero-grid {
      gap: 3rem;
    }

    .hero-actions {
      align-items: stretch;
      flex-direction: column;
    }

    .hero-actions .button,
    .hero-actions .text-link {
      inline-size: 100%;
      justify-content: center;
      text-align: center;
    }

    .trust-list {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, max-content));
    }

    .portrait-placeholder {
      aspect-ratio: 4 / 3;
    }

    .section-heading {
      grid-template-columns: 1fr;
      gap: 1.1rem;
    }

    .approach-item {
      grid-template-columns: 1fr;
      gap: 0.75rem;
    }

    .approach-item .section-number {
      text-align: center;
    }

    .session-facts > div {
      grid-template-columns: 1fr;
      gap: 0.25rem;
    }

    .certificate-track {
      grid-auto-columns: 86%;
      gap: 1rem;
    }

    .certificate-sheet {
      padding: 1.25rem;
    }

    .contact-button {
      align-items: flex-start;
      flex-direction: column;
      gap: 0.3rem;
    }

    .footer-inner {
      grid-template-columns: 1fr;
      align-items: start;
    }

    .footer-links {
      grid-column: auto;
    }
  }

  @media (pointer: coarse) {
    :where(a, summary) {
      min-block-size: 3rem;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    html {
      scroll-behavior: auto;
    }

    .button,
    .contact-button {
      transition: none;
    }
  }

  @media (forced-colors: active) {
    .button,
    .contact-button,
    .portrait-placeholder,
    .boundary-panel,
    .certificate-sheet {
      border: 1px solid ButtonText;
    }

    .trust-list li::before {
      background: CanvasText;
    }
  }
}