/* ЕГЭ-справочник. Без внешних шрифтов и CDN: ни одного стороннего запроса,
   ни одной чужой cookie. Все изображения — свои SVG-файлы. */

:root {
  --ink: #141821;
  --ink-soft: #4e5766;
  --ink-mute: #7b8797;
  --line: #e4e8ef;
  --line-soft: #eef1f6;
  --bg: #ffffff;
  --bg-soft: #f6f8fc;
  --accent: #0e7d6a;
  --accent-dark: #0a5f52;
  --accent-soft: #e6f5f1;
  --ok: #1c7a4a;
  --ok-soft: #f1f8f4;
  --warn: #a8630a;
  --warn-soft: #fdf7ec;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(20, 24, 33, .04), 0 8px 24px rgba(20, 24, 33, .05);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  font: 17px/1.68 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg);
  background-image:
    radial-gradient(900px 420px at 78% -120px, #e9f7f3 0%, rgba(255, 255, 255, 0) 72%),
    radial-gradient(700px 340px at -10% 8%, #f2fbf8 0%, rgba(255, 255, 255, 0) 70%);
  background-repeat: no-repeat;
  background-position: top center, top left;
}

.wrap { max-width: 780px; margin: 0 auto; padding: 0 20px; }

/* ---------------- шапка ---------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line-soft);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: -.01em;
  font-size: 17px;
}

.logo-mark {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), #3a7fe8);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 15px;
  font-weight: 700;
  flex: none;
}

.site-nav { display: flex; gap: 20px; }

.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 15px;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover { color: var(--accent); border-bottom-color: var(--accent-soft); }

/* ---------------- хлебные крошки ---------------- */

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-size: 14px;
  color: var(--ink-mute);
  padding: 22px 0 0;
}

.breadcrumbs a { color: var(--ink-mute); text-decoration: none; }
.breadcrumbs a:hover { color: var(--accent); }
.breadcrumbs .current { color: var(--ink-soft); }

/* ---------------- герой ---------------- */

.hero {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 34px;
  align-items: center;
  padding: 34px 0 30px;
}

.hero h1 {
  font-size: 38px;
  line-height: 1.16;
  letter-spacing: -.025em;
  margin: 0 0 16px;
}

.hero .lead {
  font-size: 19px;
  color: var(--ink-soft);
  margin: 0;
}

.hero-art img { width: 100%; height: auto; display: block; }

/* ---------------- контент ---------------- */

.content { padding: 30px 0 20px; }

h1 {
  font-size: 34px;
  line-height: 1.2;
  letter-spacing: -.022em;
  margin: 0 0 18px;
}

h2 {
  font-size: 24px;
  line-height: 1.3;
  margin: 44px 0 14px;
  letter-spacing: -.015em;
}

h3 { font-size: 19px; margin: 30px 0 10px; }

p { margin: 0 0 17px; }

.lead {
  font-size: 19px;
  color: var(--ink-soft);
  margin-bottom: 26px;
}

a { color: var(--accent); }
a:hover { color: var(--accent-dark); }

ul, ol { margin: 0 0 18px; padding-left: 24px; }
li { margin-bottom: 8px; }

blockquote {
  margin: 24px 0;
  padding: 16px 20px;
  background: var(--bg-soft);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--ink-soft);
}

hr { border: 0; border-top: 1px solid var(--line); margin: 38px 0; }

code {
  background: var(--bg-soft);
  padding: 2px 6px;
  border-radius: 5px;
  font-size: 15px;
}

/* таблицы */

.table-wrap {
  overflow-x: auto;
  margin: 0 0 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

table { border-collapse: collapse; width: 100%; font-size: 16px; }

th, td { padding: 12px 14px; text-align: left; vertical-align: top; }

thead th {
  background: var(--bg-soft);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: .01em;
  border-bottom: 1px solid var(--line);
}

tbody tr + tr td { border-top: 1px solid var(--line-soft); }

/* ---------------- блоки ---------------- */

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 26px 0 30px;
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 18px;
  background: #fff;
  box-shadow: var(--shadow);
}

.card h3 { margin: 0 0 8px; font-size: 17px; }

.card p { margin: 0; font-size: 15px; color: var(--ink-soft); }

.card-icon { font-size: 22px; line-height: 1; margin-bottom: 12px; display: block; }

.callout {
  border-left: 4px solid var(--accent);
  background: var(--bg-soft);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 20px;
  margin: 0 0 24px;
}

.callout p:last-child { margin-bottom: 0; }

.callout.warn { border-left-color: #e0a33c; background: var(--warn-soft); }
.callout.ok { border-left-color: #3f9c6c; background: var(--ok-soft); }

.steps { list-style: none; padding: 0; margin: 0 0 24px; counter-reset: st; }

.steps > li {
  position: relative;
  padding-left: 54px;
  margin-bottom: 20px;
  min-height: 36px;
}

.steps > li::before {
  counter-increment: st;
  content: counter(st);
  position: absolute;
  left: 0;
  top: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 15px;
}

/* ---------------- тест ---------------- */

.quiz {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 26px;
  margin: 8px 0 34px;
  background: #fff;
  box-shadow: var(--shadow);
}

.quiz-head { margin-bottom: 18px; }
.quiz-head h2 { margin: 0 0 6px; font-size: 21px; }
.quiz-head p { margin: 0; font-size: 15px; color: var(--ink-soft); }

.quiz-progress {
  height: 6px;
  background: var(--line-soft);
  border-radius: 99px;
  overflow: hidden;
  margin-bottom: 22px;
}

.quiz-progress span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent), #4a8ae8);
  transition: width .25s ease;
}

.quiz-step { display: none; }
.quiz-step.is-active { display: block; }

.quiz-question { font-size: 19px; font-weight: 600; margin: 0 0 16px; }

.quiz-options { display: grid; gap: 10px; }

.quiz-option {
  display: block;
  width: 100%;
  text-align: left;
  padding: 15px 17px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #fff;
  font: inherit;
  color: var(--ink);
  cursor: pointer;
  transition: border-color .15s, background .15s;
}

.quiz-option:hover { border-color: var(--accent); background: #f8fbff; }

.quiz-nav { margin-top: 16px; }

.quiz-back {
  background: none;
  border: 0;
  color: var(--ink-mute);
  font: inherit;
  font-size: 15px;
  cursor: pointer;
  padding: 6px 0;
}

.quiz-back:hover { color: var(--accent); }

.quiz-result { display: none; }
.quiz-result.is-active { display: block; }

.verdict { border-radius: var(--radius); padding: 20px; margin-bottom: 20px; border: 1px solid var(--line); }
.verdict.ok { background: var(--ok-soft); border-color: #cfe7da; }
.verdict.warn { background: var(--warn-soft); border-color: #f0e0c8; }
.verdict.no { background: var(--bg-soft); }
.verdict-title { font-weight: 700; margin: 0 0 8px; font-size: 18px; }
.verdict p:last-child { margin-bottom: 0; }

.quiz-cta {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  padding: 16px 28px;
  border-radius: 11px;
  font-weight: 600;
  box-shadow: 0 6px 18px rgba(14, 125, 106, .25);
}

.quiz-cta:hover { background: var(--accent-dark); color: #fff; }

.quiz-note { font-size: 14px; color: var(--ink-mute); margin: 16px 0 0; }

.quiz-restart {
  background: none;
  border: 0;
  color: var(--accent);
  font: inherit;
  font-size: 15px;
  cursor: pointer;
  padding: 0;
  margin-top: 16px;
}

/* ---------------- статьи ---------------- */

.post-cover { margin: 26px 0 28px; }

.post-cover img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 18px;
  border: 1px solid var(--line);
}

.post-list { list-style: none; padding: 0; margin: 0 0 30px; }

.post-list li { margin-bottom: 12px; }

.post-list li {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 17px 19px;
  background: #fff;
  transition: border-color .15s, box-shadow .15s;
}

.post-list li:hover { border-color: var(--accent); box-shadow: var(--shadow); }

.post-title {
  display: block;
  font-weight: 700;
  margin-bottom: 5px;
  color: var(--accent);
  text-decoration: none;
}

.post-title:hover { text-decoration: underline; }
.post-desc { display: block; font-size: 14px; color: var(--ink-soft); line-height: 1.5; }

.related { margin: 44px 0 20px; padding-top: 30px; border-top: 1px solid var(--line); }
.related h2 { margin-top: 0; font-size: 21px; }

/* ---------------- таблица статей ---------------- */

.article-table { font-size: 16px; }

.article-table th:first-child { width: 42%; }

.article-table td { padding: 14px 16px; }

.article-table td:first-child a {
  font-weight: 700;
  text-decoration: none;
  color: var(--accent);
}

.article-table td:first-child a:hover { text-decoration: underline; }

.article-table td:last-child { color: var(--ink-soft); font-size: 15px; line-height: 1.55; }

@media (max-width: 620px) {
  .article-table { font-size: 14.5px; }
  .article-table th:first-child { width: 46%; }
  .article-table td { padding: 11px 12px; }
  .article-table td:last-child { font-size: 13.5px; }
}

/* ---------------- призыв ---------------- */

.cta-block {
  margin: 30px 0 28px;
  padding: 22px 26px;
  border-radius: 16px;
  background: linear-gradient(135deg, #0e7d6a 0%, #1a9880 100%);
  color: #fff;
  box-shadow: 0 12px 28px rgba(14, 125, 106, .2);
}

.cta-title { font-size: 19px; font-weight: 700; margin: 0 0 6px; }

.cta-text { margin: 0 0 16px; font-size: 15px; line-height: 1.55; color: rgba(255, 255, 255, .92); }

.cta-button {
  display: inline-block;
  background: #fff;
  color: var(--accent-dark);
  font-weight: 600;
  padding: 12px 24px;
  border-radius: 10px;
  text-decoration: none;
}

.cta-button:hover { background: #eefaf7; color: var(--accent-dark); }

/* ---------------- подвал ---------------- */

.site-footer {
  margin-top: 60px;
  border-top: 1px solid var(--line);
  background: var(--bg-soft);
  padding: 34px 0 40px;
  font-size: 14px;
  color: var(--ink-soft);
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  gap: 26px;
  justify-content: space-between;
  margin-bottom: 22px;
}

.footer-brand { display: flex; gap: 11px; align-items: flex-start; }
.footer-name { margin: 0; font-weight: 700; color: var(--ink); }
.footer-tagline { margin: 2px 0 0; font-size: 13px; color: var(--ink-mute); }

.footer-nav { display: flex; flex-direction: column; gap: 8px; }
.footer-nav a { color: var(--ink-soft); text-decoration: none; }
.footer-nav a:hover { color: var(--accent); }

.disclaimer { margin: 0 0 14px; font-size: 13px; color: var(--ink-mute); line-height: 1.6; }
.copyright { margin: 0; font-size: 13px; color: var(--ink-mute); }

/* ---------------- адаптив ---------------- */

@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; gap: 22px; padding: 22px 0 20px; }
  .hero h1 { font-size: 29px; }
  .hero .lead { font-size: 17px; }
  .hero-art { max-width: 340px; }
  .cards { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  h1 { font-size: 27px; }
  h2 { font-size: 21px; }
  .content { padding: 22px 0 16px; }
  .site-nav { gap: 13px; }
  .site-nav a { font-size: 14px; }
  .quiz { padding: 18px; }
  .cta-block { padding: 18px; }
  .footer-top { flex-direction: column; gap: 20px; }
}

/* Маркировка рекламы в блоке призыва (ст. 18.1 ФЗ «О рекламе») */
.cta-note {
  margin: 12px 0 0;
  font-size: 12px;
  line-height: 1.45;
  opacity: .65;
  text-align: center;
}

/* Вторичная ссылка в блоке призыва */
.cta-alt {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.5;
  opacity: .8;
}