:root {
  --color-bg: #fff;
  --color-fg: #0b0b0b;
  --color-muted: #666;
  --color-primary: #0a84ff;
  --color-danger: #b00020;

  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 40px;

  --radius: 12px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.08), 0 8px 24px rgba(0, 0, 0, 0.08);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--color-bg);
  color: var(--color-fg);
  font-family: var(--font-body);
  line-height: 1.5;
}

img, video {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  width: min(100% - 2 * var(--space-4), 1120px);
  margin-inline: auto;
  padding-inline: var(--space-3);
}

.site-header {
  padding-block: var(--space-3);
  background: var(--color-bg);
  border-bottom: 1px solid #eee;
}

.site-header__brand {
  font-size: 1.25rem;
  font-weight: bold;
  text-decoration: none;
  color: var(--color-fg);
}

.site-nav__list {
  list-style: none;
  display: flex;
  gap: var(--space-4);
  margin: var(--space-3) 0 0;
  padding: 0;
}

.site-nav__link {
  text-decoration: none;
  color: var(--color-fg);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius);
  transition: background 0.2s;
}

.site-nav__link:hover,
.site-nav__link:focus-visible {
  background: rgba(10, 132, 255, 0.1);
}

.site-nav__link--active {
  font-weight: bold;
  color: var(--color-primary);
}

.breadcrumbs {
  margin-block: var(--space-3);
  font-size: 0.9rem;
}

.breadcrumbs a {
  color: var(--color-primary);
  text-decoration: none;
}

.breadcrumbs span {
  color: var(--color-muted);
}

.section {
  padding-block: var(--space-5);
}

.section__title {
  margin: 0 0 var(--space-3);
}

html {
  scroll-behavior: smooth;
}

:target {
  outline: 2px dashed var(--color-primary);
  outline-offset: 4px;
}


dialog {
  padding: var(--space-4);
  border: none;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  width: min(92vw, 520px);
}

dialog::backdrop {
  background: rgba(0, 0, 0, 0.5);
}

.form__label {
  display: block;
  margin: var(--space-3) 0 var(--space-2);
}

.form__input,
.form__select,
.form__textarea {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px solid #c8c8c8;
  border-radius: var(--radius);
  background: var(--color-bg);
  font: inherit;
  color: var(--color-fg);
}

.form__input:focus-visible,
.form__select:focus-visible,
.form__textarea:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.form__actions {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.form__button {
  padding: var(--space-2) var(--space-3);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font: inherit;
}

.form__button--primary {
  background: var(--color-primary);
  color: white;
}

.form__button--secondary {
  background: #eee;
  color: var(--color-fg);
}

.form__button--primary:hover {
  background: #0970e0;
}

.form__input:disabled,
.form__button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

[aria-invalid="true"] {
  border-color: var(--color-danger);
}


.hero {
  background: linear-gradient(to top, rgba(0,0,0,.55), rgba(0,0,0,.15)), url("https://via.placeholder.com/1920x600") center/cover no-repeat;
  color: white;
  padding: clamp(2rem, 6vw, 6rem) 1rem;
  text-align: center;
  border-radius: var(--radius);
  margin-block: var(--space-5);
}

.media {
  aspect-ratio: 16/9;
  width: min(100%, 960px);
  margin-inline: auto;
}

.media iframe,
.media video {
  width: 100%;
  height: 100%;
  border: 0;
  border-radius: var(--radius);
}

.card__img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  object-position: center;
  border-radius: var(--radius);
  display: block;
}