/* ==========================================================================
   abkononov.com — базовые стили
   Один файл на весь сайт. Без фреймворков.
   ========================================================================== */

/* --- Токены ------------------------------------------------------------- */
:root {
  --paper:        #f7f6f3;
  --paper-2:      #ffffff;
  --paper-3:      #efece6;
  --ink:          #14141a;
  --ink-2:        #4a4a55;
  --ink-3:        #86868f;
  --line:         #e0ddd6;
  --accent:       #2743e8;
  --accent-soft:  #e8ebfd;
  --accent-ink:   #1a2ea8;
  --ok:           #1c7a4a;
  --warn:         #b4441f;

  --radius:       10px;
  --radius-lg:    18px;
  --maxw:         1140px;
  --maxw-text:    720px;

  --step--1: clamp(0.82rem, 0.80rem + 0.10vw, 0.88rem);
  --step-0:  clamp(1.00rem, 0.96rem + 0.20vw, 1.13rem);
  --step-1:  clamp(1.19rem, 1.10rem + 0.42vw, 1.44rem);
  --step-2:  clamp(1.41rem, 1.24rem + 0.83vw, 1.94rem);
  --step-3:  clamp(1.69rem, 1.38rem + 1.52vw, 2.62rem);
  --step-4:  clamp(2.00rem, 1.47rem + 2.63vw, 3.54rem);

  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper:       #101014;
    --paper-2:     #17171d;
    --paper-3:     #1e1e26;
    --ink:         #f2f1ee;
    --ink-2:       #b3b2bb;
    --ink-3:       #7d7d88;
    --line:        #2b2b35;
    --accent:      #7f92ff;
    --accent-soft: #1b1f3d;
    --accent-ink:  #a8b5ff;
    --ok:          #4fc98a;
    --warn:        #ff9169;
    color-scheme: dark;
  }
}

/* --- Сброс -------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  font-size: var(--step-0);
  line-height: 1.55;
  font-feature-settings: "liga" 1, "kern" 1, "tnum" 0;
  -webkit-font-smoothing: antialiased;
}

img, svg, video { max-width: 100%; height: auto; display: block; }
hr { border: 0; border-top: 1px solid var(--line); margin: 2.5rem 0; }

h1, h2, h3, h4 { line-height: 1.14; margin: 0 0 .5em; letter-spacing: -0.02em; font-weight: 700; text-wrap: balance; }
h1 { font-size: var(--step-4); letter-spacing: -0.033em; }
h2 { font-size: var(--step-3); letter-spacing: -0.028em; }
h3 { font-size: var(--step-1); }
h4 { font-size: var(--step-0); }
p  { margin: 0 0 1.1em; text-wrap: pretty; }
p:last-child { margin-bottom: 0; }

a { color: var(--accent); text-decoration: none; text-underline-offset: 3px; }
a:hover { text-decoration: underline; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--ink); color: var(--paper); padding: .6rem 1rem; border-radius: 0 0 var(--radius) 0;
}
.skip:focus { left: 0; }

/* --- Сетка -------------------------------------------------------------- */
.wrap { width: min(100% - 2.5rem, var(--maxw)); margin-inline: auto; }
.wrap-text { width: min(100% - 2.5rem, var(--maxw-text)); margin-inline: auto; }
@media (max-width: 640px) { .wrap, .wrap-text { width: calc(100% - 2rem); } }

section { padding-block: clamp(3rem, 7vw, 6rem); }
section + section { border-top: 1px solid var(--line); }
.section-tight { padding-block: clamp(2rem, 4vw, 3.5rem); }

.eyebrow {
  font-size: var(--step--1);
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 600;
  margin: 0 0 .9rem;
}

.lede { font-size: var(--step-1); color: var(--ink-2); max-width: 40ch; }
.muted { color: var(--ink-2); }
.small { font-size: var(--step--1); color: var(--ink-3); }

/* --- Шапка -------------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(150%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header__in {
  display: flex; align-items: center; gap: 1.5rem;
  min-height: 62px;
}
.logo {
  font-weight: 700; letter-spacing: -0.02em; color: var(--ink);
  font-size: var(--step-0); white-space: nowrap;
}
.logo:hover { text-decoration: none; color: var(--accent); }
.logo span { display: block; font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); font-weight: 600; }

.nav { display: flex; gap: 1.25rem; margin-left: auto; align-items: center; flex-wrap: wrap; }
.nav a { color: var(--ink-2); font-size: var(--step--1); font-weight: 500; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); text-decoration: none; }
.nav a[aria-current="page"] { font-weight: 700; }

.nav-toggle {
  display: none; margin-left: auto; background: none; border: 1px solid var(--line);
  border-radius: var(--radius); padding: .45rem .7rem; color: var(--ink); font: inherit; font-size: var(--step--1); cursor: pointer;
}
@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .nav {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    background: var(--paper-2); border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: stretch; gap: 0; padding: .5rem 0;
    margin-left: 0;
  }
  .nav.is-open { display: flex; }
  .nav a { padding: .7rem 1.25rem; font-size: var(--step-0); }
  .nav .btn { margin: .5rem 1.25rem; text-align: center; }
}

/* --- Кнопки ------------------------------------------------------------- */
.btn {
  display: inline-block; border: 1px solid transparent; border-radius: var(--radius);
  padding: .8rem 1.4rem; font: inherit; font-weight: 600; font-size: var(--step-0);
  cursor: pointer; text-align: center; line-height: 1.3;
  transition: background-color .15s, color .15s, border-color .15s, transform .05s;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-ink); color: #fff; }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--ink-3); }
.btn--sm { padding: .5rem .9rem; font-size: var(--step--1); }
.btn-row { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; }

/* --- Первый экран ------------------------------------------------------- */
.hero { padding-block: clamp(3rem, 8vw, 6.5rem); }
.hero__grid { display: grid; gap: clamp(2rem, 4vw, 3.5rem); grid-template-columns: 1.25fr .75fr; align-items: start; }
@media (max-width: 900px) { .hero__grid { grid-template-columns: 1fr; } }
.hero h1 { max-width: 17ch; }
.hero__lede { font-size: var(--step-1); color: var(--ink-2); max-width: 46ch; margin-bottom: 1.8rem; }
.hero__note { font-size: var(--step--1); color: var(--ink-3); margin-top: 1rem; }
.hero__portrait { border-radius: var(--radius-lg); overflow: hidden; background: var(--paper-3); aspect-ratio: 4/5; }
.hero__portrait img { width: 100%; height: 100%; object-fit: cover; }

/* --- Цифры -------------------------------------------------------------- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
.stat { background: var(--paper); padding: 1.4rem 1.3rem; }
.stat__num { font-size: var(--step-2); font-weight: 700; letter-spacing: -0.03em; display: block; }
.stat__label { font-size: var(--step--1); color: var(--ink-2); margin-top: .3rem; }

/* --- Карточки ----------------------------------------------------------- */
.cards { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.card {
  background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 1.6rem; display: flex; flex-direction: column; gap: .6rem;
}
.card h3 { margin-bottom: .2rem; }
.card p { color: var(--ink-2); font-size: var(--step-0); }
.card__foot { margin-top: auto; padding-top: 1rem; }
a.card { color: inherit; transition: border-color .15s, transform .15s; }
a.card:hover { text-decoration: none; border-color: var(--accent); transform: translateY(-2px); }

/* Развилка «вы в России / вы за рубежом» */
.fork { display: grid; gap: 1.25rem; grid-template-columns: 1fr 1fr; }
@media (max-width: 780px) { .fork { grid-template-columns: 1fr; } }
.fork .card { padding: 1.9rem; }
.fork .card h3 { font-size: var(--step-2); }
.fork__tag { font-size: var(--step--1); font-weight: 600; letter-spacing: .07em; text-transform: uppercase; color: var(--accent); }

/* --- Кейсы -------------------------------------------------------------- */
.case-list { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 400px), 1fr)); }
.case { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 1.6rem; color: inherit; display: flex; flex-direction: column; }
.case:hover { text-decoration: none; border-color: var(--accent); }
.case__client { font-size: var(--step--1); text-transform: uppercase; letter-spacing: .07em; color: var(--ink-3); font-weight: 600; margin-bottom: .7rem; }
.case__title { font-size: var(--step-1); font-weight: 700; letter-spacing: -0.02em; margin-bottom: 1rem; }
.case__metric { margin-top: auto; padding-top: 1rem; border-top: 1px solid var(--line); }
.case__metric b { display: block; font-size: var(--step-2); letter-spacing: -0.03em; }
.case__metric span { font-size: var(--step--1); color: var(--ink-3); text-transform: uppercase; letter-spacing: .06em; }

/* --- Отзывы ------------------------------------------------------------- */
.quotes { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.quote { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 1.6rem; margin: 0; }
.quote p { font-size: var(--step-0); }
.quote footer { margin-top: 1rem; font-size: var(--step--1); color: var(--ink-3); line-height: 1.4; }
.quote footer b { display: block; color: var(--ink); font-size: var(--step-0); font-weight: 600; }

/* --- Список с галочками ------------------------------------------------- */
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: .8rem; }
.checks li { padding-left: 1.9rem; position: relative; color: var(--ink-2); }
.checks li::before {
  content: ""; position: absolute; left: 0; top: .42em; width: 1.05rem; height: .55rem;
  border-left: 2px solid var(--accent); border-bottom: 2px solid var(--accent);
  transform: rotate(-45deg);
}
.checks li b, .checks li strong { color: var(--ink); }

/* --- Нумерованные шаги -------------------------------------------------- */
.steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
.step { background: var(--paper); padding: 1.5rem; display: grid; grid-template-columns: auto 1fr; gap: 1.2rem; align-items: start; }
.step__n { font-size: var(--step-1); font-weight: 700; color: var(--ink-3); font-variant-numeric: tabular-nums; min-width: 2ch; }
.step h3 { margin-bottom: .3rem; }
.step p { color: var(--ink-2); margin: 0; }
.step__time { font-size: var(--step--1); color: var(--accent); font-weight: 600; margin-top: .5rem; }

/* --- Таблица ------------------------------------------------------------ */
.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-lg); }
table { border-collapse: collapse; width: 100%; min-width: 560px; font-size: var(--step-0); }
th, td { text-align: left; padding: .95rem 1.1rem; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th { font-size: var(--step--1); text-transform: uppercase; letter-spacing: .07em; color: var(--ink-3); background: var(--paper-3); }
tbody tr:last-child td { border-bottom: 0; }
td:last-child { color: var(--ink); font-weight: 500; }
td:nth-child(2) { color: var(--ink-2); }

/* --- Прайс -------------------------------------------------------------- */
.price { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); align-items: stretch; }
.price .card { padding: 1.9rem; }
.price__amount { font-size: var(--step-2); font-weight: 700; letter-spacing: -0.03em; }
.price__amount small { display: block; font-size: var(--step--1); font-weight: 500; color: var(--ink-3); letter-spacing: 0; text-transform: none; }

/* --- Гарантии ----------------------------------------------------------- */
.guarantee { border-left: 3px solid var(--accent); padding: .2rem 0 .2rem 1.2rem; }
.guarantee h3 { margin-bottom: .3rem; }
.guarantee p { color: var(--ink-2); margin: 0; }
.guarantees { display: grid; gap: 1.6rem; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

/* --- FAQ ---------------------------------------------------------------- */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; padding: 1.15rem 2.5rem 1.15rem 0; font-weight: 600; font-size: var(--step-1);
  list-style: none; position: relative; letter-spacing: -0.015em;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: .3rem; top: 50%; transform: translateY(-50%);
  font-size: 1.5rem; font-weight: 400; color: var(--ink-3); line-height: 1;
}
.faq details[open] summary::after { content: "–"; }
.faq details > div { padding: 0 2.5rem 1.4rem 0; color: var(--ink-2); max-width: 68ch; }
.faq summary:hover { color: var(--accent); }

/* --- Форма -------------------------------------------------------------- */
.form { display: grid; gap: 1rem; max-width: 460px; }
.field { display: grid; gap: .35rem; }
.field label { font-size: var(--step--1); font-weight: 600; color: var(--ink-2); }
.field input, .field textarea, .field select {
  font: inherit; color: var(--ink); background: var(--paper-2);
  border: 1px solid var(--line); border-radius: var(--radius); padding: .75rem .9rem; width: 100%;
}
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--accent); outline: none; }
.field textarea { min-height: 110px; resize: vertical; }
.form__consent { font-size: var(--step--1); color: var(--ink-3); display: flex; gap: .55rem; align-items: flex-start; }
.form__consent input { width: auto; margin-top: .25rem; flex: none; }
.form__status { font-size: var(--step--1); }
.form__status[data-state="ok"] { color: var(--ok); }
.form__status[data-state="err"] { color: var(--warn); }

.cta-band { background: var(--paper-3); }
.cta-band .cta__grid { display: grid; gap: clamp(2rem, 4vw, 3.5rem); grid-template-columns: 1fr 1fr; align-items: start; }
@media (max-width: 860px) { .cta-band .cta__grid { grid-template-columns: 1fr; } }

/* --- Статьи ------------------------------------------------------------- */
.article { padding-block: clamp(2.5rem, 5vw, 4.5rem); }
.article__meta { font-size: var(--step--1); color: var(--ink-3); text-transform: uppercase; letter-spacing: .07em; font-weight: 600; margin-bottom: 1rem; }
.prose { max-width: var(--maxw-text); }
.prose h2 { font-size: var(--step-2); margin-top: 2.2em; }
.prose h3 { margin-top: 1.8em; }
.prose ul, .prose ol { padding-left: 1.3rem; margin: 0 0 1.1em; }
.prose li { margin-bottom: .45em; }
.prose blockquote { margin: 1.8em 0; padding-left: 1.2rem; border-left: 3px solid var(--accent); color: var(--ink-2); font-size: var(--step-1); }
.prose figure { margin: 2em 0; }
.prose figcaption { font-size: var(--step--1); color: var(--ink-3); margin-top: .6rem; }
.prose code { background: var(--paper-3); padding: .12em .35em; border-radius: 4px; font-size: .9em; }

.post-list { display: grid; gap: 0; border-top: 1px solid var(--line); }
.post { display: block; padding: 1.6rem 0; border-bottom: 1px solid var(--line); color: inherit; }
.post:hover { text-decoration: none; }
.post:hover .post__title { color: var(--accent); }
.post__meta { font-size: var(--step--1); color: var(--ink-3); text-transform: uppercase; letter-spacing: .07em; font-weight: 600; margin-bottom: .5rem; }
.post__title { font-size: var(--step-1); font-weight: 700; letter-spacing: -0.02em; margin-bottom: .4rem; }
.post p { color: var(--ink-2); margin: 0; max-width: 68ch; }

/* --- Подвал ------------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--line); background: var(--paper-3); padding-block: 3rem 2rem; font-size: var(--step--1); }
.footer__grid { display: grid; gap: 2rem; grid-template-columns: 1.4fr 1fr 1fr 1fr; }
@media (max-width: 860px) { .footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer__grid { grid-template-columns: 1fr; } }
.footer__grid h4 { font-size: var(--step--1); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); margin-bottom: .8rem; }
.footer__grid ul { list-style: none; padding: 0; margin: 0; display: grid; gap: .5rem; }
.footer__grid a { color: var(--ink-2); }
.footer__grid a:hover { color: var(--ink); }
.footer__bottom { margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--line); color: var(--ink-3); display: flex; gap: 1rem; flex-wrap: wrap; justify-content: space-between; }

/* --- Мелочи ------------------------------------------------------------- */
.tag { display: inline-block; font-size: var(--step--1); font-weight: 600; padding: .25rem .6rem; border-radius: 100px; background: var(--accent-soft); color: var(--accent-ink); }
.breadcrumbs { font-size: var(--step--1); color: var(--ink-3); margin-bottom: 1.2rem; }
.breadcrumbs a { color: var(--ink-3); }
.stack > * + * { margin-top: 1.5rem; }
.stack-lg > * + * { margin-top: 2.5rem; }
.section-head { max-width: 60ch; margin-bottom: 2.5rem; }
.section-head p { color: var(--ink-2); font-size: var(--step-1); }
.center { text-align: center; }
.hidden { display: none !important; }