/* ============================================================
   Simplex — дизайн-система и вёрстка
   Брендинг: жёлтый акцент + тёплый белый, крупные скругления
   ============================================================ */

:root {
  --yellow: #ffc72c;
  --yellow-deep: #f0a500;
  --yellow-soft: #ffe9a3;
  --yellow-wash: #fff8e3;
  --cream: #fffcf4;
  --paper: #ffffff;
  --ink: #16150f;
  --ink-soft: #3d3a30;
  --muted: #7a7568;
  --line: #ece3ce;
  --line-soft: #f5efe0;

  --r-xs: 10px;
  --r-sm: 14px;
  --r-md: 20px;
  --r-lg: 28px;
  --r-xl: 40px;

  --shadow-sm: 0 2px 8px rgba(22, 21, 15, .04);
  --shadow-md: 0 10px 30px rgba(22, 21, 15, .07);
  --shadow-lg: 0 24px 60px rgba(22, 21, 15, .1);

  --wrap: 1180px;
  --header-h: 74px;

  --font: 'Nunito', 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--cream);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -.02em;
}

h1 { font-size: clamp(2.3rem, 5.2vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3.4vw, 2.75rem); }
h3 { font-size: 1.2rem; }

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- утилиты ---------- */
.section { padding: 100px 0; position: relative; }
.section--tight { padding: 72px 0; }
.section--paper { background: var(--paper); }
.section--wash { background: var(--yellow-wash); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .82rem;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 18px;
}
.eyebrow::before {
  content: '';
  width: 22px;
  height: 3px;
  border-radius: 3px;
  background: var(--yellow);
}

.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head p { color: var(--muted); font-size: 1.08rem; margin-top: 16px; }

.lead { font-size: 1.15rem; color: var(--ink-soft); }
.muted { color: var(--muted); }

.hl {
  position: relative;
  display: inline-block;
  z-index: 0;
}
.hl::after {
  content: '';
  position: absolute;
  left: -.08em; right: -.08em; bottom: .04em;
  height: .38em;
  background: var(--yellow);
  border-radius: 4px;
  z-index: -1;
}

/* ---------- кнопки ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 28px;
  border: 2px solid transparent;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 800;
  text-align: center;
  transition: transform .16s ease, box-shadow .16s ease, background .16s ease, border-color .16s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--yellow);
  color: var(--ink);
  box-shadow: 0 8px 22px rgba(240, 165, 0, .28);
}
.btn--primary:hover { background: var(--yellow-deep); box-shadow: 0 12px 28px rgba(240, 165, 0, .36); }

.btn--ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn--ghost:hover { background: var(--ink); color: #fff; }

.btn--light { background: var(--paper); color: var(--ink); border-color: var(--line); }
.btn--light:hover { border-color: var(--ink); }

.btn--sm { padding: 11px 20px; font-size: .92rem; }
.btn--block { width: 100%; }

/* ---------- шапка ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(255, 252, 244, .88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.header.is-scrolled { border-color: var(--line); box-shadow: var(--shadow-sm); }

.header__inner {
  display: flex;
  align-items: center;
  gap: 28px;
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

.logo { display: flex; align-items: center; gap: 11px; font-weight: 800; font-size: 1.24rem; letter-spacing: -.02em; }
.logo__mark {
  width: 38px; height: 38px;
  border-radius: 12px;
  background: var(--yellow);
  display: grid; place-items: center;
  font-size: 1.15rem;
  flex: none;
}
.logo__sub { display: block; font-size: .68rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }

.nav { display: flex; gap: 4px; margin-left: auto; }
.nav a {
  padding: 9px 14px;
  border-radius: 999px;
  font-size: .96rem;
  font-weight: 700;
  color: var(--ink-soft);
  transition: background .15s ease, color .15s ease;
}
.nav a:hover { background: var(--yellow-soft); color: var(--ink); }
.nav a.is-active { background: var(--yellow-soft); color: var(--ink); }

.header__cta { display: flex; gap: 10px; align-items: center; }

.burger {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--paper);
  padding: 0;
  position: relative;
}
.burger span {
  position: absolute;
  left: 11px; right: 11px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform .2s ease, opacity .2s ease;
}
.burger span:nth-child(1) { top: 14px; }
.burger span:nth-child(2) { top: 20px; }
.burger span:nth-child(3) { top: 26px; }
.burger.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- hero ---------- */
.hero { position: relative; padding: 76px 0 96px; overflow: hidden; }
.hero__grid {
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: 56px;
  align-items: center;
}
.hero h1 { margin-bottom: 22px; }
.hero__text { max-width: 620px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.hero__note { margin-top: 18px; font-size: .92rem; color: var(--muted); }

.badge-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.pill {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 7px 15px;
  border-radius: 999px;
  background: var(--paper);
  border: 1px solid var(--line);
  font-size: .87rem;
  font-weight: 700;
}
.pill--solid { background: var(--yellow); border-color: var(--yellow); }

.hero__art { position: relative; }
.hero__blob {
  position: absolute;
  inset: 4% -6% 4% 6%;
  background: var(--yellow);
  border-radius: 48% 52% 44% 56% / 54% 46% 54% 46%;
  z-index: 0;
}
.hero__card {
  position: relative;
  z-index: 1;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 26px;
  box-shadow: var(--shadow-lg);
}
.hero__card h4 { font-size: 1.05rem; margin-bottom: 4px; }
.task-line { font-family: 'Nunito', serif; font-size: 1.5rem; font-weight: 700; margin: 14px 0 6px; letter-spacing: -.01em; }
.task-step { display: flex; gap: 12px; padding: 11px 0; border-top: 1px dashed var(--line); font-size: .95rem; color: var(--ink-soft); }
.task-step b { flex: none; width: 22px; height: 22px; border-radius: 50%; background: var(--yellow-soft); display: grid; place-items: center; font-size: .78rem; }

.hero__float {
  position: absolute;
  z-index: 2;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 10px 16px;
  font-size: .88rem;
  font-weight: 800;
  box-shadow: var(--shadow-md);
}
.hero__float--a { top: -14px; right: 12px; }
.hero__float--b { bottom: -16px; left: -10px; }

/* ---------- статистика ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  margin-top: 72px;
}
.stat { background: var(--cream); padding: 26px 24px; }
.stat__value { font-size: 1.7rem; font-weight: 800; letter-spacing: -.03em; }
.stat__label { font-size: .9rem; color: var(--muted); margin-top: 4px; }

/* ---------- карточки преимуществ ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 30px;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--yellow); }
.card h3 { margin-bottom: 10px; }
.card p { color: var(--muted); font-size: .98rem; }

.card__icon {
  width: 48px; height: 48px;
  border-radius: 14px;
  background: var(--yellow-wash);
  border: 1px solid var(--yellow-soft);
  display: grid; place-items: center;
  margin-bottom: 18px;
}
.card__icon svg { width: 24px; height: 24px; stroke: var(--ink); fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* ---------- список со звёздочками ---------- */
.star-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 13px; }
.star-list li { position: relative; padding-left: 30px; font-size: .99rem; color: var(--ink-soft); }
.star-list li::before {
  content: '✳';
  position: absolute;
  left: 0; top: -1px;
  color: var(--yellow-deep);
  font-size: 1.05rem;
  font-weight: 700;
}

/* ---------- курсы ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 34px; }
.filter {
  padding: 10px 20px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--paper);
  font-weight: 700;
  font-size: .94rem;
  color: var(--ink-soft);
  transition: all .15s ease;
}
.filter:hover { border-color: var(--ink); }
.filter.is-active { background: var(--ink); border-color: var(--ink); color: #fff; }

.courses { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: start; }

.course {
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 28px;
  height: 100%;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.course:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--yellow); }
.course__top { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }
.tag {
  display: inline-flex;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--yellow-wash);
  border: 1px solid var(--yellow-soft);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .02em;
}
.tag--solid { background: var(--yellow); border-color: var(--yellow); }
.tag--plain { background: transparent; border-color: var(--line); color: var(--muted); }

.course h3 { font-size: 1.28rem; margin-bottom: 10px; }
.course__summary { color: var(--muted); font-size: .97rem; margin-bottom: 16px; }
.course__format {
  font-size: .89rem;
  font-weight: 700;
  color: var(--ink-soft);
  background: var(--yellow-wash);
  border-radius: var(--r-xs);
  padding: 10px 13px;
  margin-bottom: 18px;
}
.course .star-list { margin-bottom: 22px; }
.course .star-list li { font-size: .93rem; }

.course__foot { margin-top: auto; padding-top: 20px; border-top: 1px solid var(--line-soft); }
.course__price { display: flex; align-items: baseline; gap: 7px; margin-bottom: 14px; }
.course__price b { font-size: 1.65rem; font-weight: 800; letter-spacing: -.03em; }
.course__price span { font-size: .9rem; color: var(--muted); }
.price-flag { font-size: .74rem; color: var(--yellow-deep); font-weight: 800; text-transform: uppercase; letter-spacing: .06em; }

/* ---------- преподаватели ---------- */
.teachers { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.teacher {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  padding: 34px;
  overflow: hidden;
}
.teacher::after {
  content: '';
  position: absolute;
  right: -70px; bottom: -90px;
  width: 240px; height: 240px;
  border-radius: 50%;
  background: var(--yellow-soft);
  opacity: .5;
  z-index: 0;
}
.teacher > * { position: relative; z-index: 1; }
.teacher__name {
  display: inline-block;
  background: var(--yellow);
  border-radius: var(--r-sm);
  padding: 11px 22px;
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 8px;
}
.teacher__role { font-size: .88rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: 22px; }
.teacher__avatar {
  position: absolute;
  right: 30px; top: 30px;
  width: 62px; height: 62px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--yellow);
  display: grid; place-items: center;
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: .02em;
}

/* ---------- вебинары ---------- */
.events { display: grid; gap: 12px; }
.event {
  display: grid;
  grid-template-columns: 92px 1fr auto;
  gap: 20px;
  align-items: center;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 18px 22px;
}
.event__date { text-align: center; background: var(--yellow-wash); border-radius: var(--r-xs); padding: 8px 4px; }
.event__day { font-size: 1.4rem; font-weight: 800; line-height: 1; }
.event__month { font-size: .78rem; font-weight: 800; text-transform: uppercase; color: var(--muted); }
.event__title { font-weight: 800; font-size: 1.05rem; }
.event__meta { font-size: .89rem; color: var(--muted); margin-top: 2px; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 12px; max-width: 860px; }
.qa {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}
.qa__q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 21px 24px;
  background: none;
  border: 0;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--ink);
}
.qa__icon {
  flex: none;
  width: 26px; height: 26px;
  border-radius: 50%;
  background: var(--yellow);
  display: grid; place-items: center;
  font-size: 1.05rem;
  line-height: 1;
  transition: transform .2s ease;
}
.qa.is-open .qa__icon { transform: rotate(45deg); }
.qa__a { max-height: 0; overflow: hidden; transition: max-height .28s ease; }
.qa__a > div { padding: 0 24px 22px; color: var(--muted); }

/* ---------- форма заявки ---------- */
.apply { background: var(--ink); color: #fff; }
.apply .eyebrow { color: rgba(255,255,255,.72); }
.apply__grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: start; }
.apply__grid p { color: rgba(255,255,255,.7); }
.apply .star-list li { color: rgba(255,255,255,.82); }

.form {
  background: var(--paper);
  color: var(--ink);
  border-radius: var(--r-lg);
  padding: 32px;
  box-shadow: var(--shadow-lg);
}
.field { margin-bottom: 18px; }
.field label { display: block; font-size: .9rem; font-weight: 800; margin-bottom: 7px; }
.field input, .field select, .field textarea {
  width: 100%;
  padding: 13px 15px;
  border: 1.5px solid var(--line);
  border-radius: var(--r-xs);
  background: var(--cream);
  font-family: inherit;
  font-size: 1rem;
  color: var(--ink);
  transition: border-color .15s ease, background .15s ease;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--yellow-deep);
  background: var(--paper);
}
.field textarea { resize: vertical; min-height: 88px; }
.field--err input, .field--err select { border-color: #d94b3d; }
.field__err { display: none; margin-top: 6px; font-size: .84rem; font-weight: 700; color: #d94b3d; }
.field--err .field__err { display: block; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.consent { display: flex; gap: 11px; align-items: flex-start; font-size: .86rem; color: var(--muted); margin: 4px 0 20px; }
.consent input { width: 18px; height: 18px; flex: none; margin-top: 2px; accent-color: var(--yellow-deep); }

.form-error {
  display: none;
  margin-top: 14px;
  padding: 13px 15px;
  border-radius: var(--r-xs);
  background: #fdecea;
  border: 1px solid #f3b8b1;
  color: #a3271a;
  font-size: .9rem;
  font-weight: 700;
}
.btn:disabled { opacity: .6; cursor: default; }

.form__success { display: none; text-align: center; padding: 18px 4px; }
.form.is-sent .form__body { display: none; }
.form.is-sent .form__success { display: block; }
.form__success .ok {
  width: 62px; height: 62px; margin: 0 auto 18px;
  border-radius: 50%; background: var(--yellow);
  display: grid; place-items: center; font-size: 1.7rem;
}

.utm-box {
  margin-top: 18px;
  padding: 14px 16px;
  border: 1px dashed var(--line);
  border-radius: var(--r-xs);
  background: var(--cream);
  font-size: .82rem;
  color: var(--muted);
  word-break: break-all;
}
.utm-box b { color: var(--ink); }

/* ---------- блог ---------- */
.page-hero { padding: 64px 0 44px; }
.posts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.post {
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.post:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--yellow); }
.post__cover {
  height: 132px;
  background: var(--yellow-wash);
  border-bottom: 1px solid var(--line);
  display: grid; place-items: center;
  font-size: 2rem;
  font-weight: 800;
  color: var(--yellow-deep);
  letter-spacing: -.02em;
}
.post__body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.post h3 { font-size: 1.14rem; margin: 12px 0 10px; }
.post p { font-size: .95rem; color: var(--muted); }
.post__meta { margin-top: auto; padding-top: 18px; font-size: .85rem; color: var(--muted); display: flex; gap: 14px; }

.empty { padding: 60px 0; text-align: center; color: var(--muted); }

/* ---------- CTA-полоса ---------- */
.strip {
  background: var(--yellow);
  border-radius: var(--r-xl);
  padding: 44px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.strip h2 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); max-width: 620px; }
.strip p { margin-top: 10px; color: var(--ink-soft); }

/* ---------- футер ---------- */
.footer { background: var(--paper); border-top: 1px solid var(--line); padding: 56px 0 32px; }
.footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
.footer h4 { font-size: .84rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; }
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.footer a { color: var(--ink-soft); font-size: .96rem; }
.footer a:hover { color: var(--ink); text-decoration: underline; }
.footer__note { margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--line-soft); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: .86rem; color: var(--muted); }

/* ---------- анимация появления ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .55s ease, transform .55s ease; }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- адаптив ---------- */
@media (max-width: 1024px) {
  .hero__grid { grid-template-columns: 1fr; gap: 44px; }
  .hero__art { max-width: 520px; }
  .cards, .courses, .posts { grid-template-columns: repeat(2, 1fr); }
  .apply__grid, .split { grid-template-columns: 1fr; gap: 34px; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
  .nav {
    position: fixed;
    top: var(--header-h); left: 0; right: 0;
    flex-direction: column;
    gap: 2px;
    margin: 0;
    padding: 14px 20px 22px;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    transform: translateY(-130%);
    transition: transform .26s ease;
  }
  .nav.is-open { transform: none; }
  .nav a { padding: 13px 14px; font-size: 1.05rem; }
  .burger { display: block; margin-left: auto; order: 3; }
  .header__cta { order: 2; }
  .header__cta .btn { display: none; }
  .header__cta .btn--primary { display: inline-flex; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .section { padding: 68px 0; }
  .hero { padding: 44px 0 68px; }
  .cards, .courses, .posts, .teachers { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; margin-top: 48px; }
  .field-row { grid-template-columns: 1fr; }
  .event { grid-template-columns: 68px 1fr; }
  .event .btn { grid-column: 2; justify-self: start; }
  .strip { padding: 32px 26px; }
  .form, .teacher { padding: 24px; }
  .footer__grid { grid-template-columns: 1fr; }
  .hero__float { display: none; }
}